--- /dev/null
+What: /sys/bus/acpi/devices/.../path
+Date: December 2006
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the full path of ACPI namespace
+ object associated with the device object. For example,
+ \_SB_.PCI0.
+ This file is not present for device objects representing
+ fixed ACPI hardware features (like power and sleep
+ buttons).
+
+What: /sys/bus/acpi/devices/.../modalias
+Date: July 2007
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the PNP IDs of the device object.
+ That is acpi:HHHHHHHH:[CCCCCCC:]. Where each HHHHHHHH or
+ CCCCCCCC contains device object's PNPID (_HID or _CID).
+
+What: /sys/bus/acpi/devices/.../hid
+Date: April 2005
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute indicates the hardware ID (_HID) of the
+ device object. For example, PNP0103.
+ This file is present for device objects having the _HID
+ control method.
+
+What: /sys/bus/acpi/devices/.../description
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _STR control method, if present.
+
+What: /sys/bus/acpi/devices/.../adr
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _ADR control method, which is present for ACPI device
+ objects representing devices having standard enumeration
+ algorithms, such as PCI.
+
+What: /sys/bus/acpi/devices/.../uid
+Date: October 2012
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ This attribute contains the output of the device object's
+ _UID control method, if present.
+
+What: /sys/bus/acpi/devices/.../eject
+Date: December 2006
+Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
+Description:
+ Writing 1 to this attribute will trigger hot removal of
+ this device object. This file exists for every device
+ object that has _EJ0 method.
Description:
The /sys/class/devfreq/.../available_governors shows
currently available governors in the system.
+
+What: /sys/class/devfreq/.../min_freq
+Date: January 2013
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../min_freq shows and stores
+ the minimum frequency requested by users. It is 0 if
+ the user does not care. min_freq overrides the
+ frequency requested by governors.
+
+What: /sys/class/devfreq/.../max_freq
+Date: January 2013
+Contact: MyungJoo Ham <myungjoo.ham@samsung.com>
+Description:
+ The /sys/class/devfreq/.../max_freq shows and stores
+ the maximum frequency requested by users. It is 0 if
+ the user does not care. max_freq overrides the
+ frequency requested by governors and min_freq.
+ The max_freq overrides min_freq because max_freq may be
+ used to throttle devices to avoid overheating.
--- /dev/null
+What: /sys/devices/.../online
+Date: April 2013
+Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+ The /sys/devices/.../online attribute is only present for
+ devices whose bus types provide .online() and .offline()
+ callbacks. The number read from it (0 or 1) reflects the value
+ of the device's 'offline' field. If that number is 1 and '0'
+ (or 'n', or 'N') is written to this file, the device bus type's
+ .offline() callback is executed for the device and (if
+ successful) its 'offline' field is updated accordingly. In
+ turn, if that number is 0 and '1' (or 'y', or 'Y') is written to
+ this file, the device bus type's .online() callback is executed
+ for the device and (if successful) its 'offline' field is
+ updated as appropriate.
+
+ After a successful execution of the bus type's .offline()
+ callback the device cannot be used for any purpose until either
+ it is removed (i.e. device_del() is called for it), or its bus
+ type's .online() is exeucted successfully.
-Whatt: /sys/devices/.../sun
+What: /sys/devices/.../sun
Date: October 2012
Contact: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Description:
or 0 (unset). Attempts to write any other values to it will
cause -EINVAL to be returned.
+What: /sys/firmware/acpi/hotplug/force_remove
+Date: May 2013
+Contact: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+Description:
+ The number in this file (0 or 1) determines whether (1) or not
+ (0) the ACPI subsystem will allow devices to be hot-removed even
+ if they cannot be put offline gracefully (from the kernel's
+ viewpoint). That number can be changed by writing a boolean
+ value to this file.
+
What: /sys/firmware/acpi/interrupts/
Date: February 2008
Contact: Len Brown <lenb@kernel.org>
--- /dev/null
+ACPI Device Tree - Representation of ACPI Namespace
+
+Copyright (C) 2013, Intel Corporation
+Author: Lv Zheng <lv.zheng@intel.com>
+
+
+Abstract:
+
+The Linux ACPI subsystem converts ACPI namespace objects into a Linux
+device tree under the /sys/devices/LNXSYSTEM:00 and updates it upon
+receiving ACPI hotplug notification events. For each device object in this
+hierarchy there is a corresponding symbolic link in the
+/sys/bus/acpi/devices.
+This document illustrates the structure of the ACPI device tree.
+
+
+Credit:
+
+Thanks for the help from Zhang Rui <rui.zhang@intel.com> and Rafael J.
+Wysocki <rafael.j.wysocki@intel.com>.
+
+
+1. ACPI Definition Blocks
+
+ The ACPI firmware sets up RSDP (Root System Description Pointer) in the
+ system memory address space pointing to the XSDT (Extended System
+ Description Table). The XSDT always points to the FADT (Fixed ACPI
+ Description Table) using its first entry, the data within the FADT
+ includes various fixed-length entries that describe fixed ACPI features
+ of the hardware. The FADT contains a pointer to the DSDT
+ (Differentiated System Descripition Table). The XSDT also contains
+ entries pointing to possibly multiple SSDTs (Secondary System
+ Description Table).
+
+ The DSDT and SSDT data is organized in data structures called definition
+ blocks that contain definitions of various objects, including ACPI
+ control methods, encoded in AML (ACPI Machine Language). The data block
+ of the DSDT along with the contents of SSDTs represents a hierarchical
+ data structure called the ACPI namespace whose topology reflects the
+ structure of the underlying hardware platform.
+
+ The relationships between ACPI System Definition Tables described above
+ are illustrated in the following diagram.
+
+ +---------+ +-------+ +--------+ +------------------------+
+ | RSDP | +->| XSDT | +->| FADT | | +-------------------+ |
+ +---------+ | +-------+ | +--------+ +-|->| DSDT | |
+ | Pointer | | | Entry |-+ | ...... | | | +-------------------+ |
+ +---------+ | +-------+ | X_DSDT |--+ | | Definition Blocks | |
+ | Pointer |-+ | ..... | | ...... | | +-------------------+ |
+ +---------+ +-------+ +--------+ | +-------------------+ |
+ | Entry |------------------|->| SSDT | |
+ +- - - -+ | +-------------------| |
+ | Entry | - - - - - - - -+ | | Definition Blocks | |
+ +- - - -+ | | +-------------------+ |
+ | | +- - - - - - - - - -+ |
+ +-|->| SSDT | |
+ | +-------------------+ |
+ | | Definition Blocks | |
+ | +- - - - - - - - - -+ |
+ +------------------------+
+ |
+ OSPM Loading |
+ \|/
+ +----------------+
+ | ACPI Namespace |
+ +----------------+
+
+ Figure 1. ACPI Definition Blocks
+
+ NOTE: RSDP can also contain a pointer to the RSDT (Root System
+ Description Table). Platforms provide RSDT to enable
+ compatibility with ACPI 1.0 operating systems. The OS is expected
+ to use XSDT, if present.
+
+
+2. Example ACPI Namespace
+
+ All definition blocks are loaded into a single namespace. The namespace
+ is a hierarchy of objects identified by names and paths.
+ The following naming conventions apply to object names in the ACPI
+ namespace:
+ 1. All names are 32 bits long.
+ 2. The first byte of a name must be one of 'A' - 'Z', '_'.
+ 3. Each of the remaining bytes of a name must be one of 'A' - 'Z', '0'
+ - '9', '_'.
+ 4. Names starting with '_' are reserved by the ACPI specification.
+ 5. The '\' symbol represents the root of the namespace (i.e. names
+ prepended with '\' are relative to the namespace root).
+ 6. The '^' symbol represents the parent of the current namespace node
+ (i.e. names prepended with '^' are relative to the parent of the
+ current namespace node).
+
+ The figure below shows an example ACPI namespace.
+
+ +------+
+ | \ | Root
+ +------+
+ |
+ | +------+
+ +-| _PR | Scope(_PR): the processor namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| CPU0 | Processor(CPU0): the first processor
+ | +------+
+ |
+ | +------+
+ +-| _SB | Scope(_SB): the system bus namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| LID0 | Device(LID0); the lid device
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| _HID | Name(_HID, "PNP0C0D"): the hardware ID
+ | | | +------+
+ | | |
+ | | | +------+
+ | | +-| _STA | Method(_STA): the status control method
+ | | +------+
+ | |
+ | | +------+
+ | +-| PCI0 | Device(PCI0); the PCI root bridge
+ | +------+
+ | |
+ | | +------+
+ | +-| _HID | Name(_HID, "PNP0A08"): the hardware ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| _CID | Name(_CID, "PNP0A03"): the compatible ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| RP03 | Scope(RP03): the PCI0 power scope
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| PXP3 | PowerResource(PXP3): the PCI0 power resource
+ | | +------+
+ | |
+ | | +------+
+ | +-| GFX0 | Device(GFX0): the graphics adapter
+ | +------+
+ | |
+ | | +------+
+ | +-| _ADR | Name(_ADR, 0x00020000): the PCI bus address
+ | | +------+
+ | |
+ | | +------+
+ | +-| DD01 | Device(DD01): the LCD output device
+ | +------+
+ | |
+ | | +------+
+ | +-| _BCL | Method(_BCL): the backlight control method
+ | +------+
+ |
+ | +------+
+ +-| _TZ | Scope(_TZ): the thermal zone namespace
+ | +------+
+ | |
+ | | +------+
+ | +-| FN00 | PowerResource(FN00): the FAN0 power resource
+ | | +------+
+ | |
+ | | +------+
+ | +-| FAN0 | Device(FAN0): the FAN0 cooling device
+ | | +------+
+ | | |
+ | | | +------+
+ | | +-| _HID | Name(_HID, "PNP0A0B"): the hardware ID
+ | | +------+
+ | |
+ | | +------+
+ | +-| TZ00 | ThermalZone(TZ00); the FAN thermal zone
+ | +------+
+ |
+ | +------+
+ +-| _GPE | Scope(_GPE): the GPE namespace
+ +------+
+
+ Figure 2. Example ACPI Namespace
+
+
+3. Linux ACPI Device Objects
+
+ The Linux kernel's core ACPI subsystem creates struct acpi_device
+ objects for ACPI namespace objects representing devices, power resources
+ processors, thermal zones. Those objects are exported to user space via
+ sysfs as directories in the subtree under /sys/devices/LNXSYSTM:00. The
+ format of their names is <bus_id:instance>, where 'bus_id' refers to the
+ ACPI namespace representation of the given object and 'instance' is used
+ for distinguishing different object of the same 'bus_id' (it is
+ two-digit decimal representation of an unsigned integer).
+
+ The value of 'bus_id' depends on the type of the object whose name it is
+ part of as listed in the table below.
+
+ +---+-----------------+-------+----------+
+ | | Object/Feature | Table | bus_id |
+ +---+-----------------+-------+----------+
+ | N | Root | xSDT | LNXSYSTM |
+ +---+-----------------+-------+----------+
+ | N | Device | xSDT | _HID |
+ +---+-----------------+-------+----------+
+ | N | Processor | xSDT | LNXCPU |
+ +---+-----------------+-------+----------+
+ | N | ThermalZone | xSDT | LNXTHERM |
+ +---+-----------------+-------+----------+
+ | N | PowerResource | xSDT | LNXPOWER |
+ +---+-----------------+-------+----------+
+ | N | Other Devices | xSDT | device |
+ +---+-----------------+-------+----------+
+ | F | PWR_BUTTON | FADT | LNXPWRBN |
+ +---+-----------------+-------+----------+
+ | F | SLP_BUTTON | FADT | LNXSLPBN |
+ +---+-----------------+-------+----------+
+ | M | Video Extension | xSDT | LNXVIDEO |
+ +---+-----------------+-------+----------+
+ | M | ATA Controller | xSDT | LNXIOBAY |
+ +---+-----------------+-------+----------+
+ | M | Docking Station | xSDT | LNXDOCK |
+ +---+-----------------+-------+----------+
+
+ Table 1. ACPI Namespace Objects Mapping
+
+ The following rules apply when creating struct acpi_device objects on
+ the basis of the contents of ACPI System Description Tables (as
+ indicated by the letter in the first column and the notation in the
+ second column of the table above):
+ N:
+ The object's source is an ACPI namespace node (as indicated by the
+ named object's type in the second column). In that case the object's
+ directory in sysfs will contain the 'path' attribute whose value is
+ the full path to the node from the namespace root.
+ struct acpi_device objects are created for the ACPI namespace nodes
+ whose _STA control methods return PRESENT or FUNCTIONING. The power
+ resource nodes or nodes without _STA are assumed to be both PRESENT
+ and FUNCTIONING.
+ F:
+ The struct acpi_device object is created for a fixed hardware
+ feature (as indicated by the fixed feature flag's name in the second
+ column), so its sysfs directory will not contain the 'path'
+ attribute.
+ M:
+ The struct acpi_device object is created for an ACPI namespace node
+ with specific control methods (as indicated by the ACPI defined
+ device's type in the second column). The 'path' attribute containing
+ its namespace path will be present in its sysfs directory. For
+ example, if the _BCL method is present for an ACPI namespace node, a
+ struct acpi_device object with LNXVIDEO 'bus_id' will be created for
+ it.
+
+ The third column of the above table indicates which ACPI System
+ Description Tables contain information used for the creation of the
+ struct acpi_device objects represented by the given row (xSDT means DSDT
+ or SSDT).
+
+ The forth column of the above table indicates the 'bus_id' generation
+ rule of the struct acpi_device object:
+ _HID:
+ _HID in the last column of the table means that the object's bus_id
+ is derived from the _HID/_CID identification objects present under
+ the corresponding ACPI namespace node. The object's sysfs directory
+ will then contain the 'hid' and 'modalias' attributes that can be
+ used to retrieve the _HID and _CIDs of that object.
+ LNXxxxxx:
+ The 'modalias' attribute is also present for struct acpi_device
+ objects having bus_id of the "LNXxxxxx" form (pseudo devices), in
+ which cases it contains the bus_id string itself.
+ device:
+ 'device' in the last column of the table indicates that the object's
+ bus_id cannot be determined from _HID/_CID of the corresponding
+ ACPI namespace node, although that object represents a device (for
+ example, it may be a PCI device with _ADR defined and without _HID
+ or _CID). In that case the string 'device' will be used as the
+ object's bus_id.
+
+
+4. Linux ACPI Physical Device Glue
+
+ ACPI device (i.e. struct acpi_device) objects may be linked to other
+ objects in the Linux' device hierarchy that represent "physical" devices
+ (for example, devices on the PCI bus). If that happens, it means that
+ the ACPI device object is a "companion" of a device otherwise
+ represented in a different way and is used (1) to provide configuration
+ information on that device which cannot be obtained by other means and
+ (2) to do specific things to the device with the help of its ACPI
+ control methods. One ACPI device object may be linked this way to
+ multiple "physical" devices.
+
+ If an ACPI device object is linked to a "physical" device, its sysfs
+ directory contains the "physical_node" symbolic link to the sysfs
+ directory of the target device object. In turn, the target device's
+ sysfs directory will then contain the "firmware_node" symbolic link to
+ the sysfs directory of the companion ACPI device object.
+ The linking mechanism relies on device identification provided by the
+ ACPI namespace. For example, if there's an ACPI namespace object
+ representing a PCI device (i.e. a device object under an ACPI namespace
+ object representing a PCI bridge) whose _ADR returns 0x00020000 and the
+ bus number of the parent PCI bridge is 0, the sysfs directory
+ representing the struct acpi_device object created for that ACPI
+ namespace object will contain the 'physical_node' symbolic link to the
+ /sys/devices/pci0000:00/0000:00:02:0/ sysfs directory of the
+ corresponding PCI device.
+
+ The linking mechanism is generally bus-specific. The core of its
+ implementation is located in the drivers/acpi/glue.c file, but there are
+ complementary parts depending on the bus types in question located
+ elsewhere. For example, the PCI-specific part of it is located in
+ drivers/pci/pci-acpi.c.
+
+
+5. Example Linux ACPI Device Tree
+
+ The sysfs hierarchy of struct acpi_device objects corresponding to the
+ example ACPI namespace illustrated in Figure 2 with the addition of
+ fixed PWR_BUTTON/SLP_BUTTON devices is shown below.
+
+ +--------------+---+-----------------+
+ | LNXSYSTEM:00 | \ | acpi:LNXSYSTEM: |
+ +--------------+---+-----------------+
+ |
+ | +-------------+-----+----------------+
+ +-| LNXPWRBN:00 | N/A | acpi:LNXPWRBN: |
+ | +-------------+-----+----------------+
+ |
+ | +-------------+-----+----------------+
+ +-| LNXSLPBN:00 | N/A | acpi:LNXSLPBN: |
+ | +-------------+-----+----------------+
+ |
+ | +-----------+------------+--------------+
+ +-| LNXCPU:00 | \_PR_.CPU0 | acpi:LNXCPU: |
+ | +-----------+------------+--------------+
+ |
+ | +-------------+-------+----------------+
+ +-| LNXSYBUS:00 | \_SB_ | acpi:LNXSYBUS: |
+ | +-------------+-------+----------------+
+ | |
+ | | +- - - - - - - +- - - - - - +- - - - - - - -+
+ | +-| * PNP0C0D:00 | \_SB_.LID0 | acpi:PNP0C0D: |
+ | | +- - - - - - - +- - - - - - +- - - - - - - -+
+ | |
+ | | +------------+------------+-----------------------+
+ | +-| PNP0A08:00 | \_SB_.PCI0 | acpi:PNP0A08:PNP0A03: |
+ | +------------+------------+-----------------------+
+ | |
+ | | +-----------+-----------------+-----+
+ | +-| device:00 | \_SB_.PCI0.RP03 | N/A |
+ | | +-----------+-----------------+-----+
+ | | |
+ | | | +-------------+----------------------+----------------+
+ | | +-| LNXPOWER:00 | \_SB_.PCI0.RP03.PXP3 | acpi:LNXPOWER: |
+ | | +-------------+----------------------+----------------+
+ | |
+ | | +-------------+-----------------+----------------+
+ | +-| LNXVIDEO:00 | \_SB_.PCI0.GFX0 | acpi:LNXVIDEO: |
+ | +-------------+-----------------+----------------+
+ | |
+ | | +-----------+-----------------+-----+
+ | +-| device:01 | \_SB_.PCI0.DD01 | N/A |
+ | +-----------+-----------------+-----+
+ |
+ | +-------------+-------+----------------+
+ +-| LNXSYBUS:01 | \_TZ_ | acpi:LNXSYBUS: |
+ +-------------+-------+----------------+
+ |
+ | +-------------+------------+----------------+
+ +-| LNXPOWER:0a | \_TZ_.FN00 | acpi:LNXPOWER: |
+ | +-------------+------------+----------------+
+ |
+ | +------------+------------+---------------+
+ +-| PNP0C0B:00 | \_TZ_.FAN0 | acpi:PNP0C0B: |
+ | +------------+------------+---------------+
+ |
+ | +-------------+------------+----------------+
+ +-| LNXTHERM:00 | \_TZ_.TZ00 | acpi:LNXTHERM: |
+ +-------------+------------+----------------+
+
+ Figure 3. Example Linux ACPI Device Tree
+
+ NOTE: Each node is represented as "object/path/modalias", where:
+ 1. 'object' is the name of the object's directory in sysfs.
+ 2. 'path' is the ACPI namespace path of the corresponding
+ ACPI namespace object, as returned by the object's 'path'
+ sysfs attribute.
+ 3. 'modalias' is the value of the object's 'modalias' sysfs
+ attribute (as described earlier in this document).
+ NOTE: N/A indicates the device object does not have the 'path' or the
+ 'modalias' attribute.
+ NOTE: The PNP0C0D device listed above is highlighted (marked by "*")
+ to indicate it will be created only when its _STA methods return
+ PRESENT or FUNCTIONING.
--- /dev/null
+ACPI video extensions
+~~~~~~~~~~~~~~~~~~~~~
+
+This driver implement the ACPI Extensions For Display Adapters for
+integrated graphics devices on motherboard, as specified in ACPI 2.0
+Specification, Appendix B, allowing to perform some basic control like
+defining the video POST device, retrieving EDID information or to
+setup a video output, etc. Note that this is an ref. implementation
+only. It may or may not work for your integrated video device.
+
+The ACPI video driver does 3 things regarding backlight control:
+
+1 Export a sysfs interface for user space to control backlight level
+
+If the ACPI table has a video device, and acpi_backlight=vendor kernel
+command line is not present, the driver will register a backlight device
+and set the required backlight operation structure for it for the sysfs
+interface control. For every registered class device, there will be a
+directory named acpi_videoX under /sys/class/backlight.
+
+The backlight sysfs interface has a standard definition here:
+Documentation/ABI/stable/sysfs-class-backlight.
+
+And what ACPI video driver does is:
+actual_brightness: on read, control method _BQC will be evaluated to
+get the brightness level the firmware thinks it is at;
+bl_power: not implemented, will set the current brightness instead;
+brightness: on write, control method _BCM will run to set the requested
+brightness level;
+max_brightness: Derived from the _BCL package(see below);
+type: firmware
+
+Note that ACPI video backlight driver will always use index for
+brightness, actual_brightness and max_brightness. So if we have
+the following _BCL package:
+
+Method (_BCL, 0, NotSerialized)
+{
+ Return (Package (0x0C)
+ {
+ 0x64,
+ 0x32,
+ 0x0A,
+ 0x14,
+ 0x1E,
+ 0x28,
+ 0x32,
+ 0x3C,
+ 0x46,
+ 0x50,
+ 0x5A,
+ 0x64
+ })
+}
+
+The first two levels are for when laptop are on AC or on battery and are
+not used by Linux currently. The remaining 10 levels are supported levels
+that we can choose from. The applicable index values are from 0 (that
+corresponds to the 0x0A brightness value) to 9 (that corresponds to the
+0x64 brightness value) inclusive. Each of those index values is regarded
+as a "brightness level" indicator. Thus from the user space perspective
+the range of available brightness levels is from 0 to 9 (max_brightness)
+inclusive.
+
+2 Notify user space about hotkey event
+
+There are generally two cases for hotkey event reporting:
+i) For some laptops, when user presses the hotkey, a scancode will be
+ generated and sent to user space through the input device created by
+ the keyboard driver as a key type input event, with proper remap, the
+ following key code will appear to user space:
+
+ EV_KEY, KEY_BRIGHTNESSUP
+ EV_KEY, KEY_BRIGHTNESSDOWN
+ etc.
+
+For this case, ACPI video driver does not need to do anything(actually,
+it doesn't even know this happened).
+
+ii) For some laptops, the press of the hotkey will not generate the
+ scancode, instead, firmware will notify the video device ACPI node
+ about the event. The event value is defined in the ACPI spec. ACPI
+ video driver will generate an key type input event according to the
+ notify value it received and send the event to user space through the
+ input device it created:
+
+ event keycode
+ 0x86 KEY_BRIGHTNESSUP
+ 0x87 KEY_BRIGHTNESSDOWN
+ etc.
+
+so this would lead to the same effect as case i) now.
+
+Once user space tool receives this event, it can modify the backlight
+level through the sysfs interface.
+
+3 Change backlight level in the kernel
+
+This works for machines covered by case ii) in Section 2. Once the driver
+received a notification, it will set the backlight level accordingly. This does
+not affect the sending of event to user space, they are always sent to user
+space regardless of whether or not the video module controls the backlight level
+directly. This behaviour can be controlled through the brightness_switch_enabled
+module parameter as documented in kernel-parameters.txt. It is recommended to
+disable this behaviour once a GUI environment starts up and wants to have full
+control of the backlight level.
CPUs in MADT as hotpluggable CPUS. In the case there are no disabled CPUS
we assume 1/2 the number of CPUs currently present can be hotplugged.
- Caveat: Today's ACPI MADT can only provide 256 entries since the apicid field
- in MADT is only 8 bits.
+ Caveat: ACPI MADT can only provide 256 entries in systems with only ACPI 2.0c
+ or earlier ACPI version supported, because the apicid field in MADT is only
+ 8 bits. From ACPI 3.0, this limitation was removed since the apicid field
+ was extended to 32 bits with x2APIC introduced.
User Space Notification
video= [FB] Frame buffer configuration
See Documentation/fb/modedb.txt.
+ video.brightness_switch_enabled= [0,1]
+ If set to 1, on receiving an ACPI notify event
+ generated by hotkey, video driver will adjust brightness
+ level and then send out the event to user space through
+ the allocated input device; If set to 0, video driver
+ will only send out the event without touching backlight
+ brightness level.
+ default: 1
+
virtio_mmio.device=
[VMMIO] Memory mapped virtio (platform) device.
+++ /dev/null
-ACPI video extensions
-~~~~~~~~~~~~~~~~~~~~~
-
-This driver implement the ACPI Extensions For Display Adapters for
-integrated graphics devices on motherboard, as specified in ACPI 2.0
-Specification, Appendix B, allowing to perform some basic control like
-defining the video POST device, retrieving EDID information or to
-setup a video output, etc. Note that this is an ref. implementation
-only. It may or may not work for your integrated video device.
-
-Interfaces exposed to userland through /proc/acpi/video:
-
-VGA/info : display the supported video bus device capability like Video ROM, CRT/LCD/TV.
-VGA/ROM : Used to get a copy of the display devices' ROM data (up to 4k).
-VGA/POST_info : Used to determine what options are implemented.
-VGA/POST : Used to get/set POST device.
-VGA/DOS : Used to get/set ownership of output switching:
- Please refer ACPI spec B.4.1 _DOS
-VGA/CRT : CRT output
-VGA/LCD : LCD output
-VGA/TVO : TV output
-VGA/*/brightness : Used to get/set brightness of output device
-
-Notify event through /proc/acpi/event:
-
-#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
-#define ACPI_VIDEO_NOTIFY_PROBE 0x81
-#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
-#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
-#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
-
-#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x82
-#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x83
-#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x84
-#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x85
-#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x86
-
F: drivers/pnp/pnpacpi/
F: include/linux/acpi.h
F: include/acpi/
+F: Documentation/acpi
+F: Documentation/ABI/testing/sysfs-bus-acpi
ACPI FAN DRIVER
M: Zhang Rui <rui.zhang@intel.com>
T: git git://git.xilinx.com/linux-xlnx.git
S: Supported
F: arch/arm/mach-zynq/
+F: drivers/cpuidle/cpuidle-zynq.c
ARM64 PORT (AARCH64 ARCHITECTURE)
M: Catalin Marinas <catalin.marinas@arm.com>
DEVICE FREQUENCY (DEVFREQ)
M: MyungJoo Ham <myungjoo.ham@samsung.com>
M: Kyungmin Park <kyungmin.park@samsung.com>
-L: linux-kernel@vger.kernel.org
+L: linux-pm@vger.kernel.org
S: Maintained
F: drivers/devfreq/
}
omap_vp_enable(sr->voltdm);
- return sr_enable(sr->voltdm, volt);
+ return sr_enable(sr, volt);
}
static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset)
{
- sr_disable_errgen(sr->voltdm);
+ sr_disable_errgen(sr);
omap_vp_disable(sr->voltdm);
- sr_disable(sr->voltdm);
+ sr_disable(sr);
if (is_volt_reset)
voltdm_reset(sr->voltdm);
static int sr_class3_configure(struct omap_sr *sr)
{
- return sr_configure_errgen(sr->voltdm);
+ return sr_configure_errgen(sr);
}
/* SR class3 structure */
#endif
static int __init
-acpi_sba_ioc_add(struct acpi_device *device)
+acpi_sba_ioc_add(struct acpi_device *device,
+ const struct acpi_device_id *not_used)
{
struct ioc *ioc;
acpi_status status;
{"HWP0004", 0},
{"", 0},
};
-static struct acpi_driver acpi_sba_ioc_driver = {
- .name = "IOC IOMMU Driver",
- .ids = hp_ioc_iommu_device_ids,
- .ops = {
- .add = acpi_sba_ioc_add,
- },
+static struct acpi_scan_handler acpi_sba_ioc_handler = {
+ .ids = hp_ioc_iommu_device_ids,
+ .attach = acpi_sba_ioc_add,
};
+static int __init acpi_sba_ioc_init_acpi(void)
+{
+ return acpi_scan_add_handler(&acpi_sba_ioc_handler);
+}
+/* This has to run before acpi_scan_init(). */
+arch_initcall(acpi_sba_ioc_init_acpi);
+
extern struct dma_map_ops swiotlb_dma_ops;
static int __init
}
#endif
- acpi_bus_register_driver(&acpi_sba_ioc_driver);
+ /*
+ * ioc_list should be populated by the acpi_sba_ioc_handler's .attach()
+ * routine, but that only happens if acpi_scan_init() has already run.
+ */
if (!ioc_list) {
#ifdef CONFIG_IA64_GENERIC
/*
}
/* Low-level suspend routine. */
-extern int acpi_suspend_lowlevel(void);
+extern int (*acpi_suspend_lowlevel)(void);
/* Physical address to resume after wakeup */
#define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start))
#include <asm/mpspec.h>
#include <asm/smp.h>
+#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */
static int __initdata acpi_force = 0;
u32 acpi_rsdt_forced;
int acpi_disabled;
int (*__acpi_register_gsi)(struct device *dev, u32 gsi,
int trigger, int polarity) = acpi_register_gsi_pic;
+#ifdef CONFIG_ACPI_SLEEP
+int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel;
+#else
+int (*acpi_suspend_lowlevel)(void);
+#endif
+
/*
* success: return IRQ number (>=0)
* failure: return < 0
#endif
/**
- * acpi_suspend_lowlevel - save kernel state
+ * x86_acpi_suspend_lowlevel - save kernel state
*
* Create an identity mapped page table and copy the wakeup routine to
* low memory.
*/
-int acpi_suspend_lowlevel(void)
+int x86_acpi_suspend_lowlevel(void)
{
struct wakeup_header *header =
(struct wakeup_header *) __va(real_mode_header->wakeup_header);
extern void wakeup_long64(void);
extern void do_suspend_lowlevel(void);
+
+extern int x86_acpi_suspend_lowlevel(void);
acpi-y += bus.o glue.o
acpi-y += scan.o
acpi-y += resource.o
+acpi-y += acpi_processor.o
acpi-y += processor_core.o
acpi-y += ec.o
acpi-$(CONFIG_ACPI_DOCK) += dock.o
acpi-y += power.o
acpi-y += event.o
acpi-y += sysfs.o
+acpi-$(CONFIG_X86) += acpi_cmos_rtc.o
acpi-$(CONFIG_DEBUG_FS) += debugfs.o
acpi-$(CONFIG_ACPI_NUMA) += numa.o
acpi-$(CONFIG_ACPI_PROCFS_POWER) += cm_sbs.o
--- /dev/null
+/*
+ * ACPI support for CMOS RTC Address Space access
+ *
+ * Copyright (C) 2013, Intel Corporation
+ * Authors: Lan Tianyu <tianyu.lan@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm-generic/rtc.h>
+
+#include "internal.h"
+
+#define PREFIX "ACPI: "
+
+ACPI_MODULE_NAME("cmos rtc");
+
+static const struct acpi_device_id acpi_cmos_rtc_ids[] = {
+ { "PNP0B00" },
+ { "PNP0B01" },
+ { "PNP0B02" },
+ {}
+};
+
+static acpi_status
+acpi_cmos_rtc_space_handler(u32 function, acpi_physical_address address,
+ u32 bits, u64 *value64,
+ void *handler_context, void *region_context)
+{
+ int i;
+ u8 *value = (u8 *)&value64;
+
+ if (address > 0xff || !value64)
+ return AE_BAD_PARAMETER;
+
+ if (function != ACPI_WRITE && function != ACPI_READ)
+ return AE_BAD_PARAMETER;
+
+ spin_lock_irq(&rtc_lock);
+
+ for (i = 0; i < DIV_ROUND_UP(bits, 8); ++i, ++address, ++value)
+ if (function == ACPI_READ)
+ *value = CMOS_READ(address);
+ else
+ CMOS_WRITE(*value, address);
+
+ spin_unlock_irq(&rtc_lock);
+
+ return AE_OK;
+}
+
+static int acpi_install_cmos_rtc_space_handler(struct acpi_device *adev,
+ const struct acpi_device_id *id)
+{
+ acpi_status status;
+
+ status = acpi_install_address_space_handler(adev->handle,
+ ACPI_ADR_SPACE_CMOS,
+ &acpi_cmos_rtc_space_handler,
+ NULL, NULL);
+ if (ACPI_FAILURE(status)) {
+ pr_err(PREFIX "Error installing CMOS-RTC region handler\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void acpi_remove_cmos_rtc_space_handler(struct acpi_device *adev)
+{
+ if (ACPI_FAILURE(acpi_remove_address_space_handler(adev->handle,
+ ACPI_ADR_SPACE_CMOS, &acpi_cmos_rtc_space_handler)))
+ pr_err(PREFIX "Error removing CMOS-RTC region handler\n");
+}
+
+static struct acpi_scan_handler cmos_rtc_handler = {
+ .ids = acpi_cmos_rtc_ids,
+ .attach = acpi_install_cmos_rtc_space_handler,
+ .detach = acpi_remove_cmos_rtc_space_handler,
+};
+
+void __init acpi_cmos_rtc_init(void)
+{
+ acpi_scan_add_handler(&cmos_rtc_handler);
+}
#define LPSS_GENERAL_LTR_MODE_SW BIT(2)
#define LPSS_SW_LTR 0x10
#define LPSS_AUTO_LTR 0x14
+#define LPSS_TX_INT 0x20
+#define LPSS_TX_INT_MASK BIT(1)
+
+struct lpss_shared_clock {
+ const char *name;
+ unsigned long rate;
+ struct clk *clk;
+};
+
+struct lpss_private_data;
struct lpss_device_desc {
bool clk_required;
const char *clkdev_name;
bool ltr_required;
unsigned int prv_offset;
+ size_t prv_size_override;
+ bool clk_gate;
+ struct lpss_shared_clock *shared_clock;
+ void (*setup)(struct lpss_private_data *pdata);
};
static struct lpss_device_desc lpss_dma_desc = {
const struct lpss_device_desc *dev_desc;
};
+static void lpss_uart_setup(struct lpss_private_data *pdata)
+{
+ unsigned int tx_int_offset = pdata->dev_desc->prv_offset + LPSS_TX_INT;
+ u32 reg;
+
+ reg = readl(pdata->mmio_base + tx_int_offset);
+ writel(reg | LPSS_TX_INT_MASK, pdata->mmio_base + tx_int_offset);
+}
+
static struct lpss_device_desc lpt_dev_desc = {
.clk_required = true,
.prv_offset = 0x800,
.ltr_required = true,
+ .clk_gate = true,
+};
+
+static struct lpss_device_desc lpt_uart_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .ltr_required = true,
+ .clk_gate = true,
+ .setup = lpss_uart_setup,
};
static struct lpss_device_desc lpt_sdio_dev_desc = {
.prv_offset = 0x1000,
+ .prv_size_override = 0x1018,
.ltr_required = true,
};
+static struct lpss_shared_clock uart_clock = {
+ .name = "uart_clk",
+ .rate = 44236800,
+};
+
+static struct lpss_device_desc byt_uart_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .clk_gate = true,
+ .shared_clock = &uart_clock,
+ .setup = lpss_uart_setup,
+};
+
+static struct lpss_shared_clock spi_clock = {
+ .name = "spi_clk",
+ .rate = 50000000,
+};
+
+static struct lpss_device_desc byt_spi_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x400,
+ .clk_gate = true,
+ .shared_clock = &spi_clock,
+};
+
+static struct lpss_device_desc byt_sdio_dev_desc = {
+ .clk_required = true,
+};
+
+static struct lpss_shared_clock i2c_clock = {
+ .name = "i2c_clk",
+ .rate = 100000000,
+};
+
+static struct lpss_device_desc byt_i2c_dev_desc = {
+ .clk_required = true,
+ .prv_offset = 0x800,
+ .shared_clock = &i2c_clock,
+};
+
static const struct acpi_device_id acpi_lpss_device_ids[] = {
/* Generic LPSS devices */
{ "INTL9C60", (unsigned long)&lpss_dma_desc },
{ "INT33C1", (unsigned long)&lpt_dev_desc },
{ "INT33C2", (unsigned long)&lpt_dev_desc },
{ "INT33C3", (unsigned long)&lpt_dev_desc },
- { "INT33C4", (unsigned long)&lpt_dev_desc },
- { "INT33C5", (unsigned long)&lpt_dev_desc },
+ { "INT33C4", (unsigned long)&lpt_uart_dev_desc },
+ { "INT33C5", (unsigned long)&lpt_uart_dev_desc },
{ "INT33C6", (unsigned long)&lpt_sdio_dev_desc },
{ "INT33C7", },
+ /* BayTrail LPSS devices */
+ { "80860F0A", (unsigned long)&byt_uart_dev_desc },
+ { "80860F0E", (unsigned long)&byt_spi_dev_desc },
+ { "80860F14", (unsigned long)&byt_sdio_dev_desc },
+ { "80860F41", (unsigned long)&byt_i2c_dev_desc },
+ { "INT33B2", },
+
{ }
};
struct lpss_private_data *pdata)
{
const struct lpss_device_desc *dev_desc = pdata->dev_desc;
+ struct lpss_shared_clock *shared_clock = dev_desc->shared_clock;
+ struct clk *clk = ERR_PTR(-ENODEV);
struct lpss_clk_data *clk_data;
+ const char *parent;
if (!lpss_clk_dev)
lpt_register_clock_device();
|| pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE)
return -ENODATA;
- pdata->clk = clk_register_gate(NULL, dev_name(&adev->dev),
- clk_data->name, 0,
- pdata->mmio_base + dev_desc->prv_offset,
- 0, 0, NULL);
- if (IS_ERR(pdata->clk))
- return PTR_ERR(pdata->clk);
+ parent = clk_data->name;
+
+ if (shared_clock) {
+ clk = shared_clock->clk;
+ if (!clk) {
+ clk = clk_register_fixed_rate(NULL, shared_clock->name,
+ "lpss_clk", 0,
+ shared_clock->rate);
+ shared_clock->clk = clk;
+ }
+ parent = shared_clock->name;
+ }
+
+ if (dev_desc->clk_gate) {
+ clk = clk_register_gate(NULL, dev_name(&adev->dev), parent, 0,
+ pdata->mmio_base + dev_desc->prv_offset,
+ 0, 0, NULL);
+ pdata->clk = clk;
+ }
- clk_register_clkdev(pdata->clk, NULL, dev_name(&adev->dev));
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
+
+ clk_register_clkdev(clk, NULL, dev_name(&adev->dev));
return 0;
}
list_for_each_entry(rentry, &resource_list, node)
if (resource_type(&rentry->res) == IORESOURCE_MEM) {
- pdata->mmio_size = resource_size(&rentry->res);
+ if (dev_desc->prv_size_override)
+ pdata->mmio_size = dev_desc->prv_size_override;
+ else
+ pdata->mmio_size = resource_size(&rentry->res);
pdata->mmio_base = ioremap(rentry->res.start,
pdata->mmio_size);
pdata->dev_desc = dev_desc;
goto err_out;
}
+ if (dev_desc->setup)
+ dev_desc->setup(pdata);
+
adev->driver_data = pdata;
ret = acpi_create_platform_device(adev, id);
if (ret > 0)
*/
#include <linux/acpi.h>
+#include <linux/memory.h>
#include <linux/memory_hotplug.h>
#include "internal.h"
return 0;
}
+static unsigned long acpi_meminfo_start_pfn(struct acpi_memory_info *info)
+{
+ return PFN_DOWN(info->start_addr);
+}
+
+static unsigned long acpi_meminfo_end_pfn(struct acpi_memory_info *info)
+{
+ return PFN_UP(info->start_addr + info->length-1);
+}
+
+static int acpi_bind_memblk(struct memory_block *mem, void *arg)
+{
+ return acpi_bind_one(&mem->dev, (acpi_handle)arg);
+}
+
+static int acpi_bind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ return walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), (void *)handle,
+ acpi_bind_memblk);
+}
+
+static int acpi_unbind_memblk(struct memory_block *mem, void *arg)
+{
+ acpi_unbind_one(&mem->dev);
+ return 0;
+}
+
+static void acpi_unbind_memory_blocks(struct acpi_memory_info *info,
+ acpi_handle handle)
+{
+ walk_memory_range(acpi_meminfo_start_pfn(info),
+ acpi_meminfo_end_pfn(info), NULL, acpi_unbind_memblk);
+}
+
static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
{
+ acpi_handle handle = mem_device->device->handle;
int result, num_enabled = 0;
struct acpi_memory_info *info;
int node;
- node = acpi_get_node(mem_device->device->handle);
+ node = acpi_get_node(handle);
/*
* Tell the VM there is more memory here...
* Note: Assume that this function returns zero on success
if (result && result != -EEXIST)
continue;
+ result = acpi_bind_memory_blocks(info, handle);
+ if (result) {
+ acpi_unbind_memory_blocks(info, handle);
+ return -ENODEV;
+ }
+
info->enabled = 1;
/*
return 0;
}
-static int acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
+static void acpi_memory_remove_memory(struct acpi_memory_device *mem_device)
{
- int result = 0, nid;
+ acpi_handle handle = mem_device->device->handle;
struct acpi_memory_info *info, *n;
-
- nid = acpi_get_node(mem_device->device->handle);
+ int nid = acpi_get_node(handle);
list_for_each_entry_safe(info, n, &mem_device->res_list, list) {
if (!info->enabled)
if (nid < 0)
nid = memory_add_physaddr_to_nid(info->start_addr);
- result = remove_memory(nid, info->start_addr, info->length);
- if (result)
- return result;
+ acpi_unbind_memory_blocks(info, handle);
+ remove_memory(nid, info->start_addr, info->length);
list_del(&info->list);
kfree(info);
}
-
- return result;
}
static void acpi_memory_device_free(struct acpi_memory_device *mem_device)
if (result) {
dev_err(&device->dev, "acpi_memory_enable_device() error\n");
acpi_memory_device_free(mem_device);
- return -ENODEV;
+ return result;
}
dev_dbg(&device->dev, "Memory device configured by ACPI\n");
--- /dev/null
+/*
+ * acpi_processor.c - ACPI processor enumeration support
+ *
+ * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
+ * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
+ * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
+ * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+ * Copyright (C) 2013, Intel Corporation
+ * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include <acpi/processor.h>
+
+#include <asm/cpu.h>
+
+#include "internal.h"
+
+#define _COMPONENT ACPI_PROCESSOR_COMPONENT
+
+ACPI_MODULE_NAME("processor");
+
+DEFINE_PER_CPU(struct acpi_processor *, processors);
+EXPORT_PER_CPU_SYMBOL(processors);
+
+/* --------------------------------------------------------------------------
+ Errata Handling
+ -------------------------------------------------------------------------- */
+
+struct acpi_processor_errata errata __read_mostly;
+EXPORT_SYMBOL_GPL(errata);
+
+static int acpi_processor_errata_piix4(struct pci_dev *dev)
+{
+ u8 value1 = 0;
+ u8 value2 = 0;
+
+
+ if (!dev)
+ return -EINVAL;
+
+ /*
+ * Note that 'dev' references the PIIX4 ACPI Controller.
+ */
+
+ switch (dev->revision) {
+ case 0:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
+ break;
+ case 1:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 B-step\n"));
+ break;
+ case 2:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4E\n"));
+ break;
+ case 3:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4M\n"));
+ break;
+ default:
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unknown PIIX4\n"));
+ break;
+ }
+
+ switch (dev->revision) {
+
+ case 0: /* PIIX4 A-step */
+ case 1: /* PIIX4 B-step */
+ /*
+ * See specification changes #13 ("Manual Throttle Duty Cycle")
+ * and #14 ("Enabling and Disabling Manual Throttle"), plus
+ * erratum #5 ("STPCLK# Deassertion Time") from the January
+ * 2002 PIIX4 specification update. Applies to only older
+ * PIIX4 models.
+ */
+ errata.piix4.throttle = 1;
+
+ case 2: /* PIIX4E */
+ case 3: /* PIIX4M */
+ /*
+ * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
+ * Livelock") from the January 2002 PIIX4 specification update.
+ * Applies to all PIIX4 models.
+ */
+
+ /*
+ * BM-IDE
+ * ------
+ * Find the PIIX4 IDE Controller and get the Bus Master IDE
+ * Status register address. We'll use this later to read
+ * each IDE controller's DMA status to make sure we catch all
+ * DMA activity.
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB,
+ PCI_ANY_ID, PCI_ANY_ID, NULL);
+ if (dev) {
+ errata.piix4.bmisx = pci_resource_start(dev, 4);
+ pci_dev_put(dev);
+ }
+
+ /*
+ * Type-F DMA
+ * ----------
+ * Find the PIIX4 ISA Controller and read the Motherboard
+ * DMA controller's status to see if Type-F (Fast) DMA mode
+ * is enabled (bit 7) on either channel. Note that we'll
+ * disable C3 support if this is enabled, as some legacy
+ * devices won't operate well if fast DMA is disabled.
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_0,
+ PCI_ANY_ID, PCI_ANY_ID, NULL);
+ if (dev) {
+ pci_read_config_byte(dev, 0x76, &value1);
+ pci_read_config_byte(dev, 0x77, &value2);
+ if ((value1 & 0x80) || (value2 & 0x80))
+ errata.piix4.fdma = 1;
+ pci_dev_put(dev);
+ }
+
+ break;
+ }
+
+ if (errata.piix4.bmisx)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Bus master activity detection (BM-IDE) erratum enabled\n"));
+ if (errata.piix4.fdma)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Type-F DMA livelock erratum (C3 disabled)\n"));
+
+ return 0;
+}
+
+static int acpi_processor_errata(struct acpi_processor *pr)
+{
+ int result = 0;
+ struct pci_dev *dev = NULL;
+
+
+ if (!pr)
+ return -EINVAL;
+
+ /*
+ * PIIX4
+ */
+ dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
+ PCI_DEVICE_ID_INTEL_82371AB_3, PCI_ANY_ID,
+ PCI_ANY_ID, NULL);
+ if (dev) {
+ result = acpi_processor_errata_piix4(dev);
+ pci_dev_put(dev);
+ }
+
+ return result;
+}
+
+/* --------------------------------------------------------------------------
+ Initialization
+ -------------------------------------------------------------------------- */
+
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+static int acpi_processor_hotadd_init(struct acpi_processor *pr)
+{
+ unsigned long long sta;
+ acpi_status status;
+ int ret;
+
+ status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
+ if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT))
+ return -ENODEV;
+
+ ret = acpi_map_lsapic(pr->handle, &pr->id);
+ if (ret)
+ return ret;
+
+ ret = arch_register_cpu(pr->id);
+ if (ret) {
+ acpi_unmap_lsapic(pr->id);
+ return ret;
+ }
+
+ /*
+ * CPU got hot-added, but cpu_data is not initialized yet. Set a flag
+ * to delay cpu_idle/throttling initialization and do it when the CPU
+ * gets online for the first time.
+ */
+ pr_info("CPU%d has been hot-added\n", pr->id);
+ pr->flags.need_hotplug_init = 1;
+ return 0;
+}
+#else
+static inline int acpi_processor_hotadd_init(struct acpi_processor *pr)
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+static int acpi_processor_get_info(struct acpi_device *device)
+{
+ union acpi_object object = { 0 };
+ struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
+ struct acpi_processor *pr = acpi_driver_data(device);
+ int cpu_index, device_declaration = 0;
+ acpi_status status = AE_OK;
+ static int cpu0_initialized;
+
+ if (num_online_cpus() > 1)
+ errata.smp = TRUE;
+
+ acpi_processor_errata(pr);
+
+ /*
+ * Check to see if we have bus mastering arbitration control. This
+ * is required for proper C3 usage (to maintain cache coherency).
+ */
+ if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
+ pr->flags.bm_control = 1;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Bus mastering arbitration control present\n"));
+ } else
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "No bus mastering arbitration control\n"));
+
+ if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
+ /* Declared with "Processor" statement; match ProcessorID */
+ status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&device->dev,
+ "Failed to evaluate processor object (0x%x)\n",
+ status);
+ return -ENODEV;
+ }
+
+ /*
+ * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
+ * >>> 'acpi_get_processor_id(acpi_id, &id)' in
+ * arch/xxx/acpi.c
+ */
+ pr->acpi_id = object.processor.proc_id;
+ } else {
+ /*
+ * Declared with "Device" statement; match _UID.
+ * Note that we don't handle string _UIDs yet.
+ */
+ unsigned long long value;
+ status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
+ NULL, &value);
+ if (ACPI_FAILURE(status)) {
+ dev_err(&device->dev,
+ "Failed to evaluate processor _UID (0x%x)\n",
+ status);
+ return -ENODEV;
+ }
+ device_declaration = 1;
+ pr->acpi_id = value;
+ }
+ cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);
+
+ /* Handle UP system running SMP kernel, with no LAPIC in MADT */
+ if (!cpu0_initialized && (cpu_index == -1) &&
+ (num_online_cpus() == 1)) {
+ cpu_index = 0;
+ }
+
+ cpu0_initialized = 1;
+
+ pr->id = cpu_index;
+
+ /*
+ * Extra Processor objects may be enumerated on MP systems with
+ * less than the max # of CPUs. They should be ignored _iff
+ * they are physically not present.
+ */
+ if (pr->id == -1) {
+ int ret = acpi_processor_hotadd_init(pr);
+ if (ret)
+ return ret;
+ }
+ /*
+ * On some boxes several processors use the same processor bus id.
+ * But they are located in different scope. For example:
+ * \_SB.SCK0.CPU0
+ * \_SB.SCK1.CPU0
+ * Rename the processor device bus id. And the new bus id will be
+ * generated as the following format:
+ * CPU+CPU ID.
+ */
+ sprintf(acpi_device_bid(device), "CPU%X", pr->id);
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
+ pr->acpi_id));
+
+ if (!object.processor.pblk_address)
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
+ else if (object.processor.pblk_length != 6)
+ dev_err(&device->dev, "Invalid PBLK length [%d]\n",
+ object.processor.pblk_length);
+ else {
+ pr->throttling.address = object.processor.pblk_address;
+ pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
+ pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
+
+ pr->pblk = object.processor.pblk_address;
+
+ /*
+ * We don't care about error returns - we just try to mark
+ * these reserved so that nobody else is confused into thinking
+ * that this region might be unused..
+ *
+ * (In particular, allocating the IO range for Cardbus)
+ */
+ request_region(pr->throttling.address, 6, "ACPI CPU throttle");
+ }
+
+ /*
+ * If ACPI describes a slot number for this CPU, we can use it to
+ * ensure we get the right value in the "physical id" field
+ * of /proc/cpuinfo
+ */
+ status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
+ if (ACPI_SUCCESS(status))
+ arch_fix_phys_package_id(pr->id, object.integer.value);
+
+ return 0;
+}
+
+/*
+ * Do not put anything in here which needs the core to be online.
+ * For example MSR access or setting up things which check for cpuinfo_x86
+ * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
+ * Such things have to be put in and set up by the processor driver's .probe().
+ */
+static DEFINE_PER_CPU(void *, processor_device_array);
+
+static int __cpuinit acpi_processor_add(struct acpi_device *device,
+ const struct acpi_device_id *id)
+{
+ struct acpi_processor *pr;
+ struct device *dev;
+ int result = 0;
+
+ pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
+ if (!pr)
+ return -ENOMEM;
+
+ if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
+ result = -ENOMEM;
+ goto err_free_pr;
+ }
+
+ pr->handle = device->handle;
+ strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
+ device->driver_data = pr;
+
+ result = acpi_processor_get_info(device);
+ if (result) /* Processor is not physically present or unavailable */
+ return 0;
+
+#ifdef CONFIG_SMP
+ if (pr->id >= setup_max_cpus && pr->id != 0)
+ return 0;
+#endif
+
+ BUG_ON(pr->id >= nr_cpu_ids);
+
+ /*
+ * Buggy BIOS check.
+ * ACPI id of processors can be reported wrongly by the BIOS.
+ * Don't trust it blindly
+ */
+ if (per_cpu(processor_device_array, pr->id) != NULL &&
+ per_cpu(processor_device_array, pr->id) != device) {
+ dev_warn(&device->dev,
+ "BIOS reported wrong ACPI id %d for the processor\n",
+ pr->id);
+ /* Give up, but do not abort the namespace scan. */
+ goto err;
+ }
+ /*
+ * processor_device_array is not cleared on errors to allow buggy BIOS
+ * checks.
+ */
+ per_cpu(processor_device_array, pr->id) = device;
+ per_cpu(processors, pr->id) = pr;
+
+ dev = get_cpu_device(pr->id);
+ if (!dev) {
+ result = -ENODEV;
+ goto err;
+ }
+
+ result = acpi_bind_one(dev, pr->handle);
+ if (result)
+ goto err;
+
+ pr->dev = dev;
+ dev->offline = pr->flags.need_hotplug_init;
+
+ /* Trigger the processor driver's .probe() if present. */
+ if (device_attach(dev) >= 0)
+ return 1;
+
+ dev_err(dev, "Processor driver could not be attached\n");
+ acpi_unbind_one(dev);
+
+ err:
+ free_cpumask_var(pr->throttling.shared_cpu_map);
+ device->driver_data = NULL;
+ per_cpu(processors, pr->id) = NULL;
+ err_free_pr:
+ kfree(pr);
+ return result;
+}
+
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+/* --------------------------------------------------------------------------
+ Removal
+ -------------------------------------------------------------------------- */
+
+static void acpi_processor_remove(struct acpi_device *device)
+{
+ struct acpi_processor *pr;
+
+ if (!device || !acpi_driver_data(device))
+ return;
+
+ pr = acpi_driver_data(device);
+ if (pr->id >= nr_cpu_ids)
+ goto out;
+
+ /*
+ * The only reason why we ever get here is CPU hot-removal. The CPU is
+ * already offline and the ACPI device removal locking prevents it from
+ * being put back online at this point.
+ *
+ * Unbind the driver from the processor device and detach it from the
+ * ACPI companion object.
+ */
+ device_release_driver(pr->dev);
+ acpi_unbind_one(pr->dev);
+
+ /* Clean up. */
+ per_cpu(processor_device_array, pr->id) = NULL;
+ per_cpu(processors, pr->id) = NULL;
+ try_offline_node(cpu_to_node(pr->id));
+
+ /* Remove the CPU. */
+ get_online_cpus();
+ arch_unregister_cpu(pr->id);
+ acpi_unmap_lsapic(pr->id);
+ put_online_cpus();
+
+ out:
+ free_cpumask_var(pr->throttling.shared_cpu_map);
+ kfree(pr);
+}
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+/*
+ * The following ACPI IDs are known to be suitable for representing as
+ * processor devices.
+ */
+static const struct acpi_device_id processor_device_ids[] = {
+
+ { ACPI_PROCESSOR_OBJECT_HID, },
+ { ACPI_PROCESSOR_DEVICE_HID, },
+
+ { }
+};
+
+static struct acpi_scan_handler __refdata processor_handler = {
+ .ids = processor_device_ids,
+ .attach = acpi_processor_add,
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+ .detach = acpi_processor_remove,
+#endif
+ .hotplug = {
+ .enabled = true,
+ },
+};
+
+void __init acpi_processor_init(void)
+{
+ acpi_scan_add_handler_with_hotplug(&processor_handler, "processor");
+}
acpi-y += \
nsaccess.o \
nsalloc.o \
+ nsarguments.o \
nsconvert.o \
nsdump.o \
nseval.o \
tbfadt.o \
tbfind.o \
tbinstal.o \
+ tbprint.o \
tbutils.o \
tbxface.o \
tbxfload.o \
acpi-y += \
utaddress.o \
utalloc.o \
+ utbuffer.o \
utcopy.o \
utexcep.o \
utdebug.o \
utdecode.o \
utdelete.o \
+ uterror.o \
uteval.o \
utglobal.o \
utids.o \
*/
u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_auto_repair, FALSE);
+/*
+ * Optionally do not load any SSDTs from the RSDT/XSDT during initialization.
+ * This can be useful for debugging ACPI problems on some machines.
+ */
+u8 ACPI_INIT_GLOBAL(acpi_gbl_disable_ssdt_table_load, FALSE);
+
/* acpi_gbl_FADT is a local copy of the FADT, converted to a common format. */
struct acpi_table_fadt acpi_gbl_FADT;
#pragma pack()
-/* Data block used during object validation */
-
-struct acpi_predefined_data {
- char *pathname;
- const union acpi_predefined_info *predefined;
- union acpi_operand_object *parent_package;
- struct acpi_namespace_node *node;
- u32 flags;
- u32 return_btype;
- u8 node_flags;
-};
-
-/* Defines for Flags field above */
-
-#define ACPI_OBJECT_REPAIRED 1
-#define ACPI_OBJECT_WRAPPED 2
-
/* Return object auto-repair info */
typedef acpi_status(*acpi_object_converter) (union acpi_operand_object
* the plist contains a set of parens to allow variable-length lists.
* These macros are used for both the debug and non-debug versions of the code.
*/
-#define ACPI_ERROR_NAMESPACE(s, e) acpi_ut_namespace_error (AE_INFO, s, e);
-#define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e);
-#define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist
-#define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist
+#define ACPI_ERROR_NAMESPACE(s, e) acpi_ut_namespace_error (AE_INFO, s, e);
+#define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e);
+#define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist
+#define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist
+#define ACPI_BIOS_ERROR_PREDEFINED(plist) acpi_ut_predefined_bios_error plist
#else
#define ACPI_ERROR_METHOD(s, n, p, e)
#define ACPI_WARN_PREDEFINED(plist)
#define ACPI_INFO_PREDEFINED(plist)
+#define ACPI_BIOS_ERROR_PREDEFINED(plist)
#endif /* ACPI_NO_ERROR_MESSAGES */
void acpi_ns_exec_module_code_list(void);
/*
- * nspredef - Support for predefined/reserved names
+ * nsarguments - Argument count/type checking for predefined/reserved names
*/
-acpi_status
-acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
- u32 user_param_count,
- acpi_status return_status,
- union acpi_operand_object **return_object);
+void
+acpi_ns_check_argument_count(char *pathname,
+ struct acpi_namespace_node *node,
+ u32 user_param_count,
+ const union acpi_predefined_info *info);
void
-acpi_ns_check_parameter_count(char *pathname,
+acpi_ns_check_acpi_compliance(char *pathname,
struct acpi_namespace_node *node,
- u32 user_param_count,
- const union acpi_predefined_info *info);
+ const union acpi_predefined_info *predefined);
+
+void acpi_ns_check_argument_types(struct acpi_evaluate_info *info);
+
+/*
+ * nspredef - Return value checking for predefined/reserved names
+ */
+acpi_status
+acpi_ns_check_return_value(struct acpi_namespace_node *node,
+ struct acpi_evaluate_info *info,
+ u32 user_param_count,
+ acpi_status return_status,
+ union acpi_operand_object **return_object);
acpi_status
-acpi_ns_check_object_type(struct acpi_predefined_data *data,
+acpi_ns_check_object_type(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index);
* nsprepkg - Validation of predefined name packages
*/
acpi_status
-acpi_ns_check_package(struct acpi_predefined_data *data,
+acpi_ns_check_package(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
/*
* predefined methods/objects
*/
acpi_status
-acpi_ns_simple_repair(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr);
acpi_status
-acpi_ns_wrap_with_package(struct acpi_predefined_data *data,
+acpi_ns_wrap_with_package(struct acpi_evaluate_info *info,
union acpi_operand_object *original_object,
union acpi_operand_object **obj_desc_ptr);
acpi_status
-acpi_ns_repair_null_element(struct acpi_predefined_data *data,
+acpi_ns_repair_null_element(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr);
void
-acpi_ns_remove_null_elements(struct acpi_predefined_data *data,
+acpi_ns_remove_null_elements(struct acpi_evaluate_info *info,
u8 package_type,
union acpi_operand_object *obj_desc);
* predefined methods/objects
*/
acpi_status
-acpi_ns_complex_repairs(struct acpi_predefined_data *data,
+acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
struct acpi_namespace_node *node,
acpi_status validate_status,
union acpi_operand_object **return_object_ptr);
#define ARG_COUNT_IS_MINIMUM 0x8000
#define METHOD_MAX_ARG_TYPE ACPI_TYPE_PACKAGE
-#define METHOD_GET_COUNT(arg_list) (arg_list & METHOD_ARG_MASK)
-#define METHOD_GET_NEXT_ARG(arg_list) (arg_list >> METHOD_ARG_BIT_WIDTH)
+#define METHOD_GET_ARG_COUNT(arg_list) ((arg_list) & METHOD_ARG_MASK)
+#define METHOD_GET_NEXT_TYPE(arg_list) (((arg_list) >>= METHOD_ARG_BIT_WIDTH) & METHOD_ARG_MASK)
/* Macros used to build the predefined info table */
};
/*
- * Structure used to pass object evaluation parameters.
+ * Structure used to pass object evaluation information and parameters.
* Purpose is to reduce CPU stack use.
*/
struct acpi_evaluate_info {
- struct acpi_namespace_node *prefix_node;
- char *pathname;
- union acpi_operand_object *obj_desc;
- union acpi_operand_object **parameters;
- struct acpi_namespace_node *resolved_node;
- union acpi_operand_object *return_object;
- u8 param_count;
- u8 pass_number;
- u8 return_object_type;
- u8 flags;
+ /* The first 3 elements are passed by the caller to acpi_ns_evaluate */
+
+ struct acpi_namespace_node *prefix_node; /* Input: starting node */
+ char *relative_pathname; /* Input: path relative to prefix_node */
+ union acpi_operand_object **parameters; /* Input: argument list */
+
+ struct acpi_namespace_node *node; /* Resolved node (prefix_node:relative_pathname) */
+ union acpi_operand_object *obj_desc; /* Object attached to the resolved node */
+ char *full_pathname; /* Full pathname of the resolved node */
+
+ const union acpi_predefined_info *predefined; /* Used if Node is a predefined name */
+ union acpi_operand_object *return_object; /* Object returned from the evaluation */
+ union acpi_operand_object *parent_package; /* Used if return object is a Package */
+
+ u32 return_flags; /* Used for return value analysis */
+ u32 return_btype; /* Bitmapped type of the returned object */
+ u16 param_count; /* Count of the input argument list */
+ u8 pass_number; /* Parser pass number */
+ u8 return_object_type; /* Object type of the returned object */
+ u8 node_flags; /* Same as Node->Flags */
+ u8 flags; /* General flags */
};
/* Values for Flags above */
-#define ACPI_IGNORE_RETURN_VALUE 1
+#define ACPI_IGNORE_RETURN_VALUE 1
+
+/* Defines for return_flags field above */
+
+#define ACPI_OBJECT_REPAIRED 1
+#define ACPI_OBJECT_WRAPPED 2
/* Info used by acpi_ns_initialize_devices */
extern const char *acpi_gbl_pt_decode[];
#endif
+/*
+ * For the iASL compiler case, the output is redirected to stderr so that
+ * any of the various ACPI errors and warnings do not appear in the output
+ * files, for either the compiler or disassembler portions of the tool.
+ */
+#ifdef ACPI_ASL_COMPILER
+
+#include <stdio.h>
+extern FILE *acpi_gbl_output_file;
+
+#define ACPI_MSG_REDIRECT_BEGIN \
+ FILE *output_file = acpi_gbl_output_file; \
+ acpi_os_redirect_output (stderr);
+
+#define ACPI_MSG_REDIRECT_END \
+ acpi_os_redirect_output (output_file);
+
+#else
+/*
+ * non-iASL case - no redirection, nothing to do
+ */
+#define ACPI_MSG_REDIRECT_BEGIN
+#define ACPI_MSG_REDIRECT_END
+#endif
+
+/*
+ * Common error message prefixes
+ */
+#define ACPI_MSG_ERROR "ACPI Error: "
+#define ACPI_MSG_EXCEPTION "ACPI Exception: "
+#define ACPI_MSG_WARNING "ACPI Warning: "
+#define ACPI_MSG_INFO "ACPI: "
+
+#define ACPI_MSG_BIOS_ERROR "ACPI BIOS Error (bug): "
+#define ACPI_MSG_BIOS_WARNING "ACPI BIOS Warning (bug): "
+
+/*
+ * Common message suffix
+ */
+#define ACPI_MSG_SUFFIX \
+ acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
+
/* Types for Resource descriptor entries */
#define ACPI_INVALID_RESOURCE 0
void ut_convert_backslashes(char *pathname);
-u8 acpi_ut_valid_acpi_name(u32 name);
+u8 acpi_ut_valid_acpi_name(char *name);
u8 acpi_ut_valid_acpi_char(char character, u32 position);
u32 line_number,
char *pathname, u8 node_flags, const char *format, ...);
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_bios_error(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...);
+
void
acpi_ut_namespace_error(const char *module_name,
u32 line_number,
switch (op->common.aml_opcode) {
case AML_WHILE_OP:
-
/*
* If this is an additional iteration of a while loop, continue.
* There is no need to allocate a new control state.
/*lint -fallthrough */
case AML_IF_OP:
-
/*
* IF/WHILE: Create a new control state to manage these
* constructs. We need to manage these as a stack, in order
break;
default:
+
break;
}
case AML_NOOP_OP:
/* Just do nothing! */
+
break;
case AML_BREAK_POINT_OP:
*/
switch (walk_state->opcode) {
case AML_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 2);
type = ACPI_TYPE_LOCAL_REGION_FIELD;
break;
case AML_BANK_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 4);
type = ACPI_TYPE_LOCAL_BANK_FIELD;
break;
case AML_INDEX_FIELD_OP:
+
arg = acpi_ps_get_arg(op, 3);
type = ACPI_TYPE_LOCAL_INDEX_FIELD;
break;
default:
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
break;
default:
+
break;
}
break;
default:
+
ACPI_ERROR((AE_INFO, "Type %u is invalid", type));
return_ACPI_STATUS(AE_TYPE);
}
return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG);
case ACPI_REFCLASS_LOCAL:
-
/*
* No error message for this case, will be trapped again later to
* detect and ignore cases of Store(local_x,local_x)
switch (obj_desc->common.type) {
case ACPI_TYPE_BUFFER:
-
/*
* Defer evaluation of Buffer term_arg operand
*/
break;
case ACPI_TYPE_PACKAGE:
-
/*
* Defer evaluation of Package term_arg operand
*/
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Integer type 0x%X",
op_info->type));
status = AE_AML_OPERAND_TYPE;
break;
default:
+
return_ACPI_STATUS(AE_AML_BAD_OPCODE);
}
case AML_IF_OP:
case AML_WHILE_OP:
-
/*
* If we are executing the predicate AND this is the predicate op,
* we will use the return value
break;
default:
+
/* Ignore other control opcodes */
+
break;
}
goto result_not_used;
case AML_CLASS_CREATE:
-
/*
* These opcodes allow term_arg(s) as operands and therefore
* the operands can be method calls. The result is used.
goto result_not_used;
default:
-
/*
* In all other cases. the parent will actually use the return
* object, so keep it.
break;
default:
+
break;
}
break;
case AML_TYPE_METHOD_CALL:
-
/*
* If the method is referenced from within a package
* declaration, it is not a invocation of the method, just
switch (op->common.parent->common.aml_opcode) {
case AML_NAME_OP:
-
/*
* Put the Node on the object stack (Contains the ACPI Name
* of this object)
switch (pass_number) {
case 1:
+
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load1_begin_op;
break;
case 2:
+
walk_state->parse_flags = ACPI_PARSE_LOAD_PASS1 |
ACPI_PARSE_DELETE_TREE;
walk_state->descending_callback = acpi_ds_load2_begin_op;
break;
case 3:
+
#ifndef ACPI_NO_METHOD_EXECUTION
walk_state->parse_flags |= ACPI_PARSE_EXECUTE |
ACPI_PARSE_DELETE_TREE;
break;
default:
+
return (AE_BAD_PARAMETER);
}
switch (walk_state->opcode) {
case AML_SCOPE_OP:
-
/*
* The target name of the Scope() operator must exist at this point so
* that we can actually open the scope to enter new names underneath it.
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* These types we will allow, but we will change the type.
* This enables some existing code of the form:
break;
case ACPI_TYPE_METHOD:
-
/*
* Allow scope change to root during execution of module-level
* code. Root is typed METHOD during this time.
break;
default:
+
/* All NAMED_FIELD opcodes must be handled above */
break;
}
break;
default:
+
/* Unknown opcode */
status = AE_OK;
#endif /* ACPI_NO_METHOD_EXECUTION */
default:
+
/* All NAMED_COMPLEX opcodes must be handled above */
break;
}
break;
default:
+
break;
}
status = acpi_remove_fixed_event_handler(ACPI_EVENT_GLOBAL,
acpi_ev_global_lock_handler);
+ acpi_os_delete_lock(acpi_gbl_global_lock_pending_lock);
return_ACPI_STATUS(status);
}
switch (local_gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
case ACPI_GPE_DISPATCH_NOTIFY:
-
/*
* Implicit notify.
* Dispatch a DEVICE_WAKE notify to the appropriate handler.
(local_gpe_event_info->dispatch.
method_node)));
}
-
break;
default:
- return_VOID; /* Should never happen */
+
+ return_VOID; /* Should never happen */
}
/* Defer enabling of GPE until all notify handlers are done */
case ACPI_GPE_DISPATCH_METHOD:
case ACPI_GPE_DISPATCH_NOTIFY:
-
/*
* Execute the method associated with the GPE
* NOTE: Level-triggered GPEs are cleared after the method completes.
break;
default:
-
/*
* No handler or method to run!
* 03/2010: This case should no longer be possible. We will not allow
status = acpi_ev_install_gpe_block(gpe_block, interrupt_number);
if (ACPI_FAILURE(status)) {
+ ACPI_FREE(gpe_block->register_info);
+ ACPI_FREE(gpe_block->event_info);
ACPI_FREE(gpe_block);
return_ACPI_STATUS(status);
}
*/
switch (name[1]) {
case 'L':
+
type = ACPI_GPE_LEVEL_TRIGGERED;
break;
case 'E':
+
type = ACPI_GPE_EDGE_TRIGGERED;
break;
default:
+
/* Unknown method type, just ignore it */
ACPI_DEBUG_PRINT((ACPI_DB_LOAD,
switch (space_id) {
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
+
handler = acpi_ex_system_memory_space_handler;
setup = acpi_ev_system_memory_region_setup;
break;
case ACPI_ADR_SPACE_SYSTEM_IO:
+
handler = acpi_ex_system_io_space_handler;
setup = acpi_ev_io_space_region_setup;
break;
case ACPI_ADR_SPACE_PCI_CONFIG:
+
handler = acpi_ex_pci_config_space_handler;
setup = acpi_ev_pci_config_region_setup;
break;
case ACPI_ADR_SPACE_CMOS:
+
handler = acpi_ex_cmos_space_handler;
setup = acpi_ev_cmos_region_setup;
break;
case ACPI_ADR_SPACE_PCI_BAR_TARGET:
+
handler = acpi_ex_pci_bar_space_handler;
setup = acpi_ev_pci_bar_region_setup;
break;
case ACPI_ADR_SPACE_DATA_TABLE:
+
handler = acpi_ex_data_table_space_handler;
setup = NULL;
break;
default:
+
status = AE_BAD_PARAMETER;
goto unlock_and_exit;
}
return (TRUE);
default:
+
return (FALSE);
}
}
ACPI_ERROR((AE_INFO,
"Could not remove Global Lock handler"));
}
+
+ acpi_gbl_events_initialized = FALSE;
}
/* Deallocate all handler objects installed within GPE info structs */
/* Local prototypes */
-static void acpi_ev_orphan_ec_reg_method(void);
+static void
+acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node);
static acpi_status
acpi_ev_reg_run(acpi_handle obj_handle,
}
info->prefix_node = region_obj2->extra.method_REG;
- info->pathname = NULL;
+ info->relative_pathname = NULL;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/* Special case for EC: handle "orphan" _REG methods with no region */
if (space_id == ACPI_ADR_SPACE_EC) {
- acpi_ev_orphan_ec_reg_method();
+ acpi_ev_orphan_ec_reg_method(node);
}
return_ACPI_STATUS(status);
*
* FUNCTION: acpi_ev_orphan_ec_reg_method
*
- * PARAMETERS: None
+ * PARAMETERS: ec_device_node - Namespace node for an EC device
*
* RETURN: None
*
* detected by providing a _REG method object underneath the
* Embedded Controller device."
*
- * To quickly access the EC device, we use the EC_ID that appears
- * within the ECDT. Otherwise, we would need to perform a time-
- * consuming namespace walk, executing _HID methods to find the
- * EC device.
+ * To quickly access the EC device, we use the ec_device_node used
+ * during EC handler installation. Otherwise, we would need to
+ * perform a time consuming namespace walk, executing _HID
+ * methods to find the EC device.
+ *
+ * MUTEX: Assumes the namespace is locked
*
******************************************************************************/
-static void acpi_ev_orphan_ec_reg_method(void)
+static void
+acpi_ev_orphan_ec_reg_method(struct acpi_namespace_node *ec_device_node)
{
- struct acpi_table_ecdt *table;
+ acpi_handle reg_method;
+ struct acpi_namespace_node *next_node;
acpi_status status;
struct acpi_object_list args;
union acpi_object objects[2];
- struct acpi_namespace_node *ec_device_node;
- struct acpi_namespace_node *reg_method;
- struct acpi_namespace_node *next_node;
ACPI_FUNCTION_TRACE(ev_orphan_ec_reg_method);
- /* Get the ECDT (if present in system) */
-
- status = acpi_get_table(ACPI_SIG_ECDT, 0,
- ACPI_CAST_INDIRECT_PTR(struct acpi_table_header,
- &table));
- if (ACPI_FAILURE(status)) {
- return_VOID;
- }
-
- /* We need a valid EC_ID string */
-
- if (!(*table->id)) {
+ if (!ec_device_node) {
return_VOID;
}
(void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
- /* Get a handle to the EC device referenced in the ECDT */
-
- status = acpi_get_handle(NULL,
- ACPI_CAST_PTR(char, table->id),
- ACPI_CAST_PTR(acpi_handle, &ec_device_node));
- if (ACPI_FAILURE(status)) {
- goto exit;
- }
-
/* Get a handle to a _REG method immediately under the EC device */
- status = acpi_get_handle(ec_device_node,
- METHOD_NAME__REG, ACPI_CAST_PTR(acpi_handle,
- ®_method));
+ status = acpi_get_handle(ec_device_node, METHOD_NAME__REG, ®_method);
if (ACPI_FAILURE(status)) {
- goto exit;
+ goto exit; /* There is no _REG method present */
}
/*
* this scope with the Embedded Controller space ID. Otherwise, it
* will already have been executed. Note, this allows for Regions
* with other space IDs to be present; but the code below will then
- * execute the _REG method with the EC space ID argument.
+ * execute the _REG method with the embedded_control space_ID argument.
*/
next_node = acpi_ns_get_next_node(ec_device_node, NULL);
while (next_node) {
if ((next_node->type == ACPI_TYPE_REGION) &&
(next_node->object) &&
(next_node->object->region.space_id == ACPI_ADR_SPACE_EC)) {
- goto exit; /* Do not execute _REG */
+ goto exit; /* Do not execute the _REG */
}
+
next_node = acpi_ns_get_next_node(ec_device_node, next_node);
}
- /* Evaluate the _REG(EC,Connect) method */
+ /* Evaluate the _REG(embedded_control,Connect) method */
args.count = 2;
args.pointer = objects;
break;
default:
+
/* Ignore other objects */
+
break;
}
switch (action) {
case ACPI_GPE_ENABLE:
+
ACPI_SET_BIT(gpe_register_info->enable_for_wake,
(u8)register_bit);
break;
case ACPI_GPE_DISABLE:
+
ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
(u8)register_bit);
break;
default:
+
ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
status = AE_BAD_PARAMETER;
break;
break;
default:
+
break;
}
break;
default:
+
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
(ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) ||
(ddb_handle->common.type != ACPI_TYPE_LOCAL_REFERENCE) ||
(!(ddb_handle->common.flags & AOPOBJ_DATA_VALID))) {
- return_ACPI_STATUS(AE_BAD_PARAMETER);
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
/* Get the table index from the ddb_handle */
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
switch (obj_desc->common.type) {
case ACPI_TYPE_STRING:
-
/*
* Convert string to an integer - for most cases, the string must be
* hexadecimal as per the ACPI specification. The only exception (as
default:
/* No other types can get here */
+
break;
}
return_ACPI_STATUS(AE_OK);
case ACPI_TYPE_INTEGER:
-
/*
* Create a new Buffer object.
* Need enough space for one integer
break;
case ACPI_TYPE_STRING:
-
/*
* Create a new Buffer object
* Size will be the string length
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
switch (data_width) {
case 1:
+
decimal_length = ACPI_MAX8_DECIMAL_DIGITS;
break;
case 4:
+
decimal_length = ACPI_MAX32_DECIMAL_DIGITS;
break;
case 8:
default:
+
decimal_length = ACPI_MAX64_DECIMAL_DIGITS;
break;
}
break;
default:
+
return_ACPI_STATUS(AE_TYPE);
}
break;
default:
+
/* No conversion allowed for these types */
if (destination_type != source_desc->common.type) {
break;
default:
+
ACPI_ERROR((AE_INFO,
"Bad destination type during conversion: 0x%X",
destination_type));
break;
default:
+
ACPI_ERROR((AE_INFO,
"Unknown Target type ID 0x%X AmlOpcode 0x%X DestType %s",
GET_CURRENT_ARG_TYPE(walk_state->op_info->
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_PACKAGE:
case ACPI_TYPE_BUFFER_FIELD:
-
/*
* These types open a new scope, so we need the NS node in order to access
* any children.
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_THERMAL:
case ACPI_TYPE_LOCAL_SCOPE:
-
/*
* The new alias has the type ALIAS and points to the original
* NS node, not the object itself.
break;
case ACPI_TYPE_METHOD:
-
/*
* Control method aliases need to be differentiated
*/
return_VOID;
default:
+
break;
}
break;
default:
+
acpi_ex_do_debug_object((source_desc->
reference.
node)->object,
switch (info->opcode) {
case ACPI_EXD_INIT:
+
break;
case ACPI_EXD_TYPE:
break;
default:
+
/* Unknown Type */
acpi_os_printf("Unknown Type %X\n", obj_desc->common.type);
switch (source_desc->common.type) {
case ACPI_TYPE_INTEGER:
+
buffer = &source_desc->integer.value;
length = sizeof(source_desc->integer.value);
break;
case ACPI_TYPE_BUFFER:
+
buffer = source_desc->buffer.pointer;
length = source_desc->buffer.length;
break;
case ACPI_TYPE_STRING:
+
buffer = source_desc->string.pointer;
length = source_desc->string.length;
break;
default:
+
return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
}
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
-
/*
* Ensure that the bank_value is not beyond the capacity of
* the register
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
-
/*
* Ensure that the index_value is not beyond the capacity of
* the register
break;
case ACPI_DESC_TYPE_NAMED:
-
/*
* A named reference that has already been resolved to a Node
*/
*/
switch (operand0->common.type) {
case ACPI_TYPE_INTEGER:
+
status =
acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
break;
case ACPI_TYPE_STRING:
+
status = acpi_ex_convert_to_string(operand1, &local_operand1,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
+
status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid object type: 0x%X",
operand0->common.type));
status = AE_AML_INTERNAL;
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
*/
switch (operand0->common.type) {
case ACPI_TYPE_INTEGER:
+
status =
acpi_ex_convert_to_integer(operand1, &local_operand1, 16);
break;
case ACPI_TYPE_STRING:
+
status = acpi_ex_convert_to_string(operand1, &local_operand1,
ACPI_IMPLICIT_CONVERT_HEX);
break;
case ACPI_TYPE_BUFFER:
+
status = acpi_ex_convert_to_buffer(operand1, &local_operand1);
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
default:
+
status = AE_AML_INTERNAL;
break;
}
break;
case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */
-
/*
* The 64-bit ACPI integer can hold 16 4-bit BCD characters
* (if table is 32-bit, integer can hold 8 BCD characters)
break;
case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */
-
/*
* This op is a little strange because the internal return value is
* different than the return value stored in the result descriptor
goto cleanup;
default:
+
/* No other opcodes get here */
+
break;
}
break;
case AML_STORE_OP: /* Store (Source, Target) */
-
/*
* A store operand is typically a number, string, buffer or lvalue
* Be careful about deleting the source object,
case AML_DECREMENT_OP: /* Decrement (Operand) */
case AML_INCREMENT_OP: /* Increment (Operand) */
-
/*
* Create a new integer. Can't just get the base integer and
* increment it because it may be an Arg or Field.
break;
case AML_TYPE_OP: /* object_type (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value. For example, we don't
break;
case AML_SIZE_OF_OP: /* size_of (source_object) */
-
/*
* Note: The operand is not resolved at this point because we want to
* get the associated object, not its value.
*/
switch (type) {
case ACPI_TYPE_INTEGER:
+
value = acpi_gbl_integer_byte_width;
break;
case ACPI_TYPE_STRING:
+
value = temp_desc->string.length;
break;
break;
default:
+
ACPI_ERROR((AE_INFO,
"Operand must be Buffer/Integer/String/Package - found type %s",
acpi_ut_get_type_name(type)));
break;
case ACPI_TYPE_STRING:
+
break;
default:
+
status = AE_AML_OPERAND_TYPE;
goto cleanup;
}
*/
switch (operand[0]->reference.class) {
case ACPI_REFCLASS_INDEX:
-
/*
* The target type for the Index operator must be
* either a Buffer or a Package
break;
case ACPI_TYPE_PACKAGE:
-
/*
* Return the referenced element of the package. We must
* add another reference to the referenced object, however.
break;
default:
+
ACPI_ERROR((AE_INFO,
"Unknown class in reference(%p) - 0x%2.2X",
operand[0],
break;
case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */
-
/*
* Input object is guaranteed to be a buffer at this point (it may have
* been converted.) Copy the raw buffer data to a new object of
switch (walk_state->opcode) {
case AML_MID_OP: /* Mid (Source[0], Index[1], Length[2], Result[3]) */
-
/*
* Create the return object. The Source operand is guaranteed to be
* either a String or a Buffer, so just use its type.
break;
case MATCH_MEQ:
-
/*
* True if equal: (P[i] == M)
* Change to: (M == P[i])
break;
case MATCH_MLE:
-
/*
* True if less than or equal: (P[i] <= M) (P[i] not_greater than M)
* Change to: (M >= P[i]) (M not_less than P[i])
break;
case MATCH_MLT:
-
/*
* True if less than: (P[i] < M)
* Change to: (M > P[i])
break;
case MATCH_MGE:
-
/*
* True if greater than or equal: (P[i] >= M) (P[i] not_less than M)
* Change to: (M <= P[i]) (M not_greater than P[i])
break;
case MATCH_MGT:
-
/*
* True if greater than: (P[i] > M)
* Change to: (M < P[i])
case AML_FIELD_ACCESS_BYTE:
case AML_FIELD_ACCESS_BUFFER: /* ACPI 2.0 (SMBus Buffer) */
+
byte_alignment = 1;
bit_length = 8;
break;
case AML_FIELD_ACCESS_WORD:
+
byte_alignment = 2;
bit_length = 16;
break;
case AML_FIELD_ACCESS_DWORD:
+
byte_alignment = 4;
bit_length = 32;
break;
case AML_FIELD_ACCESS_QWORD: /* ACPI 2.0 */
+
byte_alignment = 8;
bit_length = 64;
break;
default:
+
/* Invalid field access type */
ACPI_ERROR((AE_INFO, "Unknown field access type 0x%X", access));
break;
default:
+
/* No other types should get here */
+
break;
}
switch (bit_width) {
case 8:
+
length = 1;
break;
case 16:
+
length = 2;
break;
case 32:
+
length = 4;
break;
case 64:
+
length = 8;
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u",
bit_width));
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
*value = 0;
switch (bit_width) {
case 8:
- *value = (u64) ACPI_GET8(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET8(logical_addr_ptr);
break;
case 16:
- *value = (u64) ACPI_GET16(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET16(logical_addr_ptr);
break;
case 32:
- *value = (u64) ACPI_GET32(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET32(logical_addr_ptr);
break;
case 64:
- *value = (u64) ACPI_GET64(logical_addr_ptr);
+
+ *value = (u64)ACPI_GET64(logical_addr_ptr);
break;
default:
+
/* bit_width was already validated */
+
break;
}
break;
switch (bit_width) {
case 8:
+
ACPI_SET8(logical_addr_ptr, *value);
break;
case 16:
+
ACPI_SET16(logical_addr_ptr, *value);
break;
case 32:
+
ACPI_SET32(logical_addr_ptr, *value);
break;
case 64:
+
ACPI_SET64(logical_addr_ptr, *value);
break;
default:
+
/* bit_width was already validated */
+
break;
}
break;
default:
+
status = AE_BAD_PARAMETER;
break;
}
break;
default:
+
status = AE_BAD_PARAMETER;
break;
}
break;
default:
+
/* No named references are allowed here */
ACPI_ERROR((AE_INFO,
switch (ref_type) {
case ACPI_REFCLASS_LOCAL:
case ACPI_REFCLASS_ARG:
-
/*
* Get the local from the method's state info
* Note: this increments the local's object reference count
break;
default:
+
break;
}
switch (ACPI_GET_DESCRIPTOR_TYPE(obj_desc)) {
case ACPI_DESC_TYPE_OPERAND:
+
type = obj_desc->common.type;
break;
case ACPI_DESC_TYPE_NAMED:
+
type = ((struct acpi_namespace_node *)obj_desc)->type;
obj_desc =
acpi_ns_get_attached_object((struct acpi_namespace_node *)
break;
default:
+
/* No change to Type required */
+
break;
}
case ARGI_TARGETREF: /* Allows implicit conversion rules before store */
case ARGI_FIXED_TARGET: /* No implicit conversion before store to target */
case ARGI_SIMPLE_TARGET: /* Name, Local, or arg - no implicit conversion */
-
/*
* Need an operand of type ACPI_TYPE_LOCAL_REFERENCE
* A Namespace Node is OK as-is
goto next_operand;
case ARGI_DATAREFOBJ: /* Store operator only */
-
/*
* We don't want to resolve index_op reference objects during
* a store because this would be an implicit de_ref_of operation.
break;
default:
+
/* All cases covered above */
+
break;
}
goto next_operand;
case ARGI_BUFFER:
-
/*
* Need an operand of type ACPI_TYPE_BUFFER,
* But we can implicitly convert from a STRING or INTEGER
goto next_operand;
case ARGI_STRING:
-
/*
* Need an operand of type ACPI_TYPE_STRING,
* But we can implicitly convert from a BUFFER or INTEGER
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package/Reference], found [%s] %p",
acpi_ut_get_object_type_name
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Buffer/String/Package], found [%s] %p",
acpi_ut_get_object_type_name
break;
default:
+
ACPI_ERROR((AE_INFO,
"Needed [Region/Buffer], found [%s] %p",
acpi_ut_get_object_type_name
switch (dest_desc->common.type) {
case ACPI_TYPE_LOCAL_REFERENCE:
+
break;
case ACPI_TYPE_INTEGER:
break;
case ACPI_REFCLASS_DEBUG:
-
/*
* Storing to the Debug object causes the value stored to be
* displayed and otherwise has no effect -- see ACPI Specification
break;
case ACPI_TYPE_BUFFER_FIELD:
-
/*
* Store into a Buffer or String (not actually a real buffer_field)
* at a location defined by an Index.
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* These target types are all of type Integer/String/Buffer, and
* therefore support implicit conversion before the store.
* These cases all require only Integers or values that
* can be converted to Integers (Strings or Buffers)
*/
-
case ACPI_TYPE_INTEGER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_BUFFER:
-
/*
* Stores into a Field/Region or into a Integer/Buffer/String
* are all essentially the same. This case handles the
case ACPI_TYPE_LOCAL_ALIAS:
case ACPI_TYPE_LOCAL_METHOD_ALIAS:
-
/*
* All aliases should have been resolved earlier, during the
* operand resolution phase.
case ACPI_TYPE_PACKAGE:
default:
-
/*
* All other types than Alias and the various Fields come here,
* including the untyped case - ACPI_TYPE_ANY.
break;
case ACPI_SYS_MODE_LEGACY:
-
/*
* BIOS should clear all fixed status bits and restore fixed event
* enable bits to default
break;
default:
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*lint -fallthrough */
case ACPI_GPE_ENABLE:
+
ACPI_SET_BIT(enable_mask, register_bit);
break;
case ACPI_GPE_DISABLE:
+
ACPI_CLEAR_BIT(enable_mask, register_bit);
break;
default:
+
ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u", action));
return (AE_BAD_PARAMETER);
}
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
break;
case ACPI_REGISTER_PM1_CONTROL: /* PM1 A/B: 16-bit access each */
-
/*
* Perform a read first to preserve certain bits (per ACPI spec)
* Note: This includes SCI_EN, we never want to change this bit
break;
case ACPI_REGISTER_PM2_CONTROL: /* 8-bit access */
-
/*
* For control registers, all reserved bits must be preserved,
* as per the ACPI spec.
break;
default:
+
ACPI_ERROR((AE_INFO, "Unknown Register ID: 0x%X", register_id));
status = AE_BAD_PARAMETER;
break;
* Evaluate the \_Sx namespace object containing the register values
* for this state
*/
- info->pathname =
+ info->relative_pathname =
ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
status = acpi_ns_evaluate(info);
if (ACPI_FAILURE(status)) {
if (!info->return_object) {
ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
- info->pathname));
+ info->relative_pathname));
status = AE_AML_NO_RETURN_VALUE;
goto cleanup;
}
elements = info->return_object->package.elements;
switch (info->return_object->package.count) {
case 0:
+
status = AE_AML_PACKAGE_LIMIT;
break;
case 1:
+
if (elements[0]->common.type != ACPI_TYPE_INTEGER) {
status = AE_AML_OPERAND_TYPE;
break;
case 2:
default:
+
if ((elements[0]->common.type != ACPI_TYPE_INTEGER) ||
(elements[1]->common.type != ACPI_TYPE_INTEGER)) {
status = AE_AML_OPERAND_TYPE;
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"While evaluating Sleep State [%s]",
- info->pathname));
+ info->relative_pathname));
}
ACPI_FREE(info);
&acpi_sleep_dispatch[function_id];
#if (!ACPI_REDUCED_HARDWARE)
-
/*
* If the Hardware Reduced flag is set (from the FADT), we must
- * use the extended sleep registers
+ * use the extended sleep registers (FADT). Note: As per the ACPI
+ * specification, these extended registers are to be used for HW-reduced
+ * platforms only. They are not general-purpose replacements for the
+ * legacy PM register sleep support.
*/
- if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) {
+ if (acpi_gbl_reduced_hardware) {
status = sleep_functions->extended_function(sleep_state);
} else {
/* Legacy sleep */
switch (sleep_state) {
case ACPI_STATE_S0:
+
sst_value = ACPI_SST_WORKING;
break;
case ACPI_STATE_S1:
case ACPI_STATE_S2:
case ACPI_STATE_S3:
+
sst_value = ACPI_SST_SLEEPING;
break;
case ACPI_STATE_S4:
+
sst_value = ACPI_SST_SLEEP_CONTEXT;
break;
default:
+
sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */
break;
}
*/
switch (init_val->type) {
case ACPI_TYPE_METHOD:
+
obj_desc->method.param_count =
(u8) ACPI_TO_INTEGER(val);
obj_desc->common.flags |= AOPOBJ_DATA_VALID;
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: nsarguments - Validation of args for ACPI predefined methods
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+#include "acpredef.h"
+
+#define _COMPONENT ACPI_NAMESPACE
+ACPI_MODULE_NAME("nsarguments")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_argument_types
+ *
+ * PARAMETERS: info - Method execution information block
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check the incoming argument count and all argument types
+ * against the argument type list for a predefined name.
+ *
+ ******************************************************************************/
+void acpi_ns_check_argument_types(struct acpi_evaluate_info *info)
+{
+ u16 arg_type_list;
+ u8 arg_count;
+ u8 arg_type;
+ u8 user_arg_type;
+ u32 i;
+
+ /* If not a predefined name, cannot typecheck args */
+
+ if (!info->predefined) {
+ return;
+ }
+
+ arg_type_list = info->predefined->info.argument_list;
+ arg_count = METHOD_GET_ARG_COUNT(arg_type_list);
+
+ /* Typecheck all arguments */
+
+ for (i = 0; ((i < arg_count) && (i < info->param_count)); i++) {
+ arg_type = METHOD_GET_NEXT_TYPE(arg_type_list);
+ user_arg_type = info->parameters[i]->common.type;
+
+ if (user_arg_type != arg_type) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ ACPI_WARN_ALWAYS,
+ "Argument #%u type mismatch - "
+ "Found [%s], ACPI requires [%s]",
+ (i + 1),
+ acpi_ut_get_type_name
+ (user_arg_type),
+ acpi_ut_get_type_name(arg_type)));
+ }
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_acpi_compliance
+ *
+ * PARAMETERS: pathname - Full pathname to the node (for error msgs)
+ * node - Namespace node for the method/object
+ * predefined - Pointer to entry in predefined name table
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check that the declared parameter count (in ASL/AML) for a
+ * predefined name is what is expected (matches what is defined in
+ * the ACPI specification for this predefined name.)
+ *
+ ******************************************************************************/
+
+void
+acpi_ns_check_acpi_compliance(char *pathname,
+ struct acpi_namespace_node *node,
+ const union acpi_predefined_info *predefined)
+{
+ u32 aml_param_count;
+ u32 required_param_count;
+
+ if (!predefined) {
+ return;
+ }
+
+ /* Get the ACPI-required arg count from the predefined info table */
+
+ required_param_count =
+ METHOD_GET_ARG_COUNT(predefined->info.argument_list);
+
+ /*
+ * If this object is not a control method, we can check if the ACPI
+ * spec requires that it be a method.
+ */
+ if (node->type != ACPI_TYPE_METHOD) {
+ if (required_param_count > 0) {
+
+ /* Object requires args, must be implemented as a method */
+
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Object (%s) must be a control method with %u arguments",
+ acpi_ut_get_type_name(node->
+ type),
+ required_param_count));
+ } else if (!required_param_count
+ && !predefined->info.expected_btypes) {
+
+ /* Object requires no args and no return value, must be a method */
+
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Object (%s) must be a control method "
+ "with no arguments and no return value",
+ acpi_ut_get_type_name(node->
+ type)));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a control method.
+ * Check that the ASL/AML-defined parameter count for this method
+ * matches the ACPI-required parameter count
+ *
+ * Some methods are allowed to have a "minimum" number of args (_SCP)
+ * because their definition in ACPI has changed over time.
+ *
+ * Note: These are BIOS errors in the declaration of the object
+ */
+ aml_param_count = node->object->method.param_count;
+
+ if (aml_param_count < required_param_count) {
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "ASL declared %u, ACPI requires %u",
+ aml_param_count,
+ required_param_count));
+ } else if ((aml_param_count > required_param_count)
+ && !(predefined->info.
+ argument_list & ARG_COUNT_IS_MINIMUM)) {
+ ACPI_BIOS_ERROR_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "ASL declared %u, ACPI requires %u",
+ aml_param_count,
+ required_param_count));
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ns_check_argument_count
+ *
+ * PARAMETERS: pathname - Full pathname to the node (for error msgs)
+ * node - Namespace node for the method/object
+ * user_param_count - Number of args passed in by the caller
+ * predefined - Pointer to entry in predefined name table
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Check that incoming argument count matches the declared
+ * parameter count (in the ASL/AML) for an object.
+ *
+ ******************************************************************************/
+
+void
+acpi_ns_check_argument_count(char *pathname,
+ struct acpi_namespace_node *node,
+ u32 user_param_count,
+ const union acpi_predefined_info *predefined)
+{
+ u32 aml_param_count;
+ u32 required_param_count;
+
+ if (!predefined) {
+ /*
+ * Not a predefined name. Check the incoming user argument count
+ * against the count that is specified in the method/object.
+ */
+ if (node->type != ACPI_TYPE_METHOD) {
+ if (user_param_count) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "%u arguments were passed to a non-method ACPI object (%s)",
+ user_param_count,
+ acpi_ut_get_type_name
+ (node->type)));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a control method. Check the parameter count.
+ * We can only check the incoming argument count against the
+ * argument count declared for the method in the ASL/AML.
+ *
+ * Emit a message if too few or too many arguments have been passed
+ * by the caller.
+ *
+ * Note: Too many arguments will not cause the method to
+ * fail. However, the method will fail if there are too few
+ * arguments and the method attempts to use one of the missing ones.
+ */
+ aml_param_count = node->object->method.param_count;
+
+ if (user_param_count < aml_param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "Caller passed %u, method requires %u",
+ user_param_count,
+ aml_param_count));
+ } else if (user_param_count > aml_param_count) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "Caller passed %u, method requires %u",
+ user_param_count,
+ aml_param_count));
+ }
+
+ return;
+ }
+
+ /*
+ * This is a predefined name. Validate the user-supplied parameter
+ * count against the ACPI specification. We don't validate against
+ * the method itself because what is important here is that the
+ * caller is in conformance with the spec. (The arg count for the
+ * method was checked against the ACPI spec earlier.)
+ *
+ * Some methods are allowed to have a "minimum" number of args (_SCP)
+ * because their definition in ACPI has changed over time.
+ */
+ required_param_count =
+ METHOD_GET_ARG_COUNT(predefined->info.argument_list);
+
+ if (user_param_count < required_param_count) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Insufficient arguments - "
+ "Caller passed %u, ACPI requires %u",
+ user_param_count, required_param_count));
+ } else if ((user_param_count > required_param_count) &&
+ !(predefined->info.argument_list & ARG_COUNT_IS_MINIMUM)) {
+ ACPI_INFO_PREDEFINED((AE_INFO, pathname, ACPI_WARN_ALWAYS,
+ "Excess arguments - "
+ "Caller passed %u, ACPI requires %u",
+ user_param_count, required_param_count));
+ }
+}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
case ACPI_TYPE_BUFFER:
case ACPI_TYPE_STRING:
case ACPI_TYPE_METHOD:
+
acpi_os_printf("<No attached object>");
break;
default:
+
break;
}
break;
default:
+
break;
}
break;
goto cleanup;
case ACPI_TYPE_BUFFER_FIELD:
+
obj_desc =
(union acpi_operand_object *)obj_desc->buffer_field.
buffer_obj;
break;
case ACPI_TYPE_PACKAGE:
+
obj_desc = (void *)obj_desc->package.elements;
break;
case ACPI_TYPE_METHOD:
+
obj_desc = (void *)obj_desc->method.aml_start;
break;
case ACPI_TYPE_LOCAL_REGION_FIELD:
+
obj_desc = (void *)obj_desc->field.region_obj;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
+
obj_desc = (void *)obj_desc->bank_field.region_obj;
break;
case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
obj_desc = (void *)obj_desc->index_field.index_obj;
break;
default:
+
goto cleanup;
}
*
* PARAMETERS: info - Evaluation info block, contains:
* prefix_node - Prefix or Method/Object Node to execute
- * pathname - Name of method to execute, If NULL, the
+ * relative_path - Name of method to execute, If NULL, the
* Node is the object to execute
* parameters - List of parameters to pass to the method,
* terminated by NULL. Params itself may be
*
******************************************************************************/
-acpi_status acpi_ns_evaluate(struct acpi_evaluate_info * info)
+acpi_status acpi_ns_evaluate(struct acpi_evaluate_info *info)
{
acpi_status status;
- struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(ns_evaluate);
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
- /* Initialize the return value to an invalid object */
-
- info->return_object = NULL;
- info->param_count = 0;
-
- if (!info->resolved_node) {
+ if (!info->node) {
/*
- * Get the actual namespace node for the target object if we need to.
- * Handles these cases:
+ * Get the actual namespace node for the target object if we
+ * need to. Handles these cases:
*
- * 1) Null node, Pathname (absolute path)
- * 2) Node, Pathname (path relative to Node)
- * 3) Node, Null Pathname
+ * 1) Null node, valid pathname from root (absolute path)
+ * 2) Node and valid pathname (path relative to Node)
+ * 3) Node, Null pathname
*/
- status = acpi_ns_get_node(info->prefix_node, info->pathname,
- ACPI_NS_NO_UPSEARCH,
- &info->resolved_node);
+ status =
+ acpi_ns_get_node(info->prefix_node, info->relative_pathname,
+ ACPI_NS_NO_UPSEARCH, &info->node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
}
/*
- * For a method alias, we must grab the actual method node so that proper
- * scoping context will be established before execution.
+ * For a method alias, we must grab the actual method node so that
+ * proper scoping context will be established before execution.
*/
- if (acpi_ns_get_type(info->resolved_node) ==
- ACPI_TYPE_LOCAL_METHOD_ALIAS) {
- info->resolved_node =
+ if (acpi_ns_get_type(info->node) == ACPI_TYPE_LOCAL_METHOD_ALIAS) {
+ info->node =
ACPI_CAST_PTR(struct acpi_namespace_node,
- info->resolved_node->object);
+ info->node->object);
+ }
+
+ /* Complete the info block initialization */
+
+ info->return_object = NULL;
+ info->node_flags = info->node->flags;
+ info->obj_desc = acpi_ns_get_attached_object(info->node);
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n",
+ info->relative_pathname, info->node,
+ acpi_ns_get_attached_object(info->node)));
+
+ /* Get info if we have a predefined name (_HID, etc.) */
+
+ info->predefined =
+ acpi_ut_match_predefined_method(info->node->name.ascii);
+
+ /* Get the full pathname to the object, for use in warning messages */
+
+ info->full_pathname = acpi_ns_get_external_pathname(info->node);
+ if (!info->full_pathname) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
}
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "%s [%p] Value %p\n", info->pathname,
- info->resolved_node,
- acpi_ns_get_attached_object(info->resolved_node)));
+ /* Count the number of arguments being passed in */
+
+ info->param_count = 0;
+ if (info->parameters) {
+ while (info->parameters[info->param_count]) {
+ info->param_count++;
+ }
+
+ /* Warn on impossible argument count */
+
+ if (info->param_count > ACPI_METHOD_NUM_ARGS) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments (%u) - using only %u",
+ info->param_count,
+ ACPI_METHOD_NUM_ARGS));
+
+ info->param_count = ACPI_METHOD_NUM_ARGS;
+ }
+ }
+
+ /*
+ * For predefined names: Check that the declared argument count
+ * matches the ACPI spec -- otherwise this is a BIOS error.
+ */
+ acpi_ns_check_acpi_compliance(info->full_pathname, info->node,
+ info->predefined);
+
+ /*
+ * For all names: Check that the incoming argument count for
+ * this method/object matches the actual ASL/AML definition.
+ */
+ acpi_ns_check_argument_count(info->full_pathname, info->node,
+ info->param_count, info->predefined);
- node = info->resolved_node;
+ /* For predefined names: Typecheck all incoming arguments */
+
+ acpi_ns_check_argument_types(info);
/*
- * Two major cases here:
+ * Three major evaluation cases:
*
- * 1) The object is a control method -- execute it
- * 2) The object is not a method -- just return it's current value
+ * 1) Object types that cannot be evaluated by definition
+ * 2) The object is a control method -- execute it
+ * 3) The object is not a method -- just return it's current value
*/
- if (acpi_ns_get_type(info->resolved_node) == ACPI_TYPE_METHOD) {
+ switch (acpi_ns_get_type(info->node)) {
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_EVENT:
+ case ACPI_TYPE_MUTEX:
+ case ACPI_TYPE_REGION:
+ case ACPI_TYPE_THERMAL:
+ case ACPI_TYPE_LOCAL_SCOPE:
+ /*
+ * 1) Disallow evaluation of certain object types. For these,
+ * object evaluation is undefined and not supported.
+ */
+ ACPI_ERROR((AE_INFO,
+ "%s: Evaluation of object type [%s] is not supported",
+ info->full_pathname,
+ acpi_ut_get_type_name(info->node->type)));
+
+ status = AE_TYPE;
+ goto cleanup;
+
+ case ACPI_TYPE_METHOD:
/*
- * 1) Object is a control method - execute it
+ * 2) Object is a control method - execute it
*/
/* Verify that there is a method object associated with this node */
- info->obj_desc =
- acpi_ns_get_attached_object(info->resolved_node);
if (!info->obj_desc) {
ACPI_ERROR((AE_INFO,
- "Control method has no attached sub-object"));
- return_ACPI_STATUS(AE_NULL_OBJECT);
+ "%s: Method has no attached sub-object",
+ info->full_pathname));
+ status = AE_NULL_OBJECT;
+ goto cleanup;
}
- /* Count the number of arguments being passed to the method */
-
- if (info->parameters) {
- while (info->parameters[info->param_count]) {
- if (info->param_count > ACPI_METHOD_MAX_ARG) {
- return_ACPI_STATUS(AE_LIMIT);
- }
- info->param_count++;
- }
- }
-
-
- ACPI_DUMP_PATHNAME(info->resolved_node, "ACPI: Execute Method",
- ACPI_LV_INFO, _COMPONENT);
-
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
- "Method at AML address %p Length %X\n",
+ "**** Execute method [%s] at AML address %p length %X\n",
+ info->full_pathname,
info->obj_desc->method.aml_start + 1,
info->obj_desc->method.aml_length - 1));
acpi_ex_enter_interpreter();
status = acpi_ps_execute_method(info);
acpi_ex_exit_interpreter();
- } else {
+ break;
+
+ default:
/*
- * 2) Object is not a method, return its current value
- *
- * Disallow certain object types. For these, "evaluation" is undefined.
+ * 3) All other non-method objects -- get the current object value
*/
- switch (info->resolved_node->type) {
- case ACPI_TYPE_DEVICE:
- case ACPI_TYPE_EVENT:
- case ACPI_TYPE_MUTEX:
- case ACPI_TYPE_REGION:
- case ACPI_TYPE_THERMAL:
- case ACPI_TYPE_LOCAL_SCOPE:
-
- ACPI_ERROR((AE_INFO,
- "[%4.4s] Evaluation of object type [%s] is not supported",
- info->resolved_node->name.ascii,
- acpi_ut_get_type_name(info->resolved_node->
- type)));
-
- return_ACPI_STATUS(AE_TYPE);
-
- default:
- break;
- }
/*
- * Objects require additional resolution steps (e.g., the Node may be
- * a field that must be read, etc.) -- we can't just grab the object
- * out of the node.
+ * Some objects require additional resolution steps (e.g., the Node
+ * may be a field that must be read, etc.) -- we can't just grab
+ * the object out of the node.
*
* Use resolve_node_to_value() to get the associated value.
*
* NOTE: we can get away with passing in NULL for a walk state because
- * resolved_node is guaranteed to not be a reference to either a method
+ * the Node is guaranteed to not be a reference to either a method
* local or a method argument (because this interface is never called
* from a running method.)
*
* Even though we do not directly invoke the interpreter for object
- * resolution, we must lock it because we could access an opregion.
- * The opregion access code assumes that the interpreter is locked.
+ * resolution, we must lock it because we could access an op_region.
+ * The op_region access code assumes that the interpreter is locked.
*/
acpi_ex_enter_interpreter();
- /* Function has a strange interface */
+ /* TBD: resolve_node_to_value has a strange interface, fix */
+
+ info->return_object =
+ ACPI_CAST_PTR(union acpi_operand_object, info->node);
status =
- acpi_ex_resolve_node_to_value(&info->resolved_node, NULL);
+ acpi_ex_resolve_node_to_value(ACPI_CAST_INDIRECT_PTR
+ (struct acpi_namespace_node,
+ &info->return_object), NULL);
acpi_ex_exit_interpreter();
- /*
- * If acpi_ex_resolve_node_to_value() succeeded, the return value was placed
- * in resolved_node.
- */
- if (ACPI_SUCCESS(status)) {
- status = AE_CTRL_RETURN_VALUE;
- info->return_object =
- ACPI_CAST_PTR(union acpi_operand_object,
- info->resolved_node);
-
- ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
- "Returning object %p [%s]\n",
- info->return_object,
- acpi_ut_get_object_type_name(info->
- return_object)));
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
}
+
+ ACPI_DEBUG_PRINT((ACPI_DB_NAMES, "Returned object %p [%s]\n",
+ info->return_object,
+ acpi_ut_get_object_type_name(info->
+ return_object)));
+
+ status = AE_CTRL_RETURN_VALUE; /* Always has a "return value" */
+ break;
}
/*
- * Check input argument count against the ASL-defined count for a method.
- * Also check predefined names: argument count and return value against
- * the ACPI specification. Some incorrect return value types are repaired.
+ * For predefined names, check the return value against the ACPI
+ * specification. Some incorrect return value types are repaired.
*/
- (void)acpi_ns_check_predefined_names(node, info->param_count,
- status, &info->return_object);
+ (void)acpi_ns_check_return_value(info->node, info, info->param_count,
+ status, &info->return_object);
/* Check if there is a return value that must be dealt with */
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"*** Completed evaluation of object %s ***\n",
- info->pathname));
+ info->relative_pathname));
+ cleanup:
/*
* Namespace was unlocked by the handling acpi_ns* function, so we
- * just return
+ * just free the pathname and return
*/
+ ACPI_FREE(info->full_pathname);
+ info->full_pathname = NULL;
return_ACPI_STATUS(status);
}
* part of the ACPI specification.
*/
info.evaluate_info->prefix_node = acpi_gbl_root_node;
- info.evaluate_info->pathname = METHOD_NAME__INI;
+ info.evaluate_info->relative_pathname = METHOD_NAME__INI;
info.evaluate_info->parameters = NULL;
info.evaluate_info->flags = ACPI_IGNORE_RETURN_VALUE;
switch (type) {
case ACPI_TYPE_REGION:
+
info->op_region_count++;
break;
case ACPI_TYPE_BUFFER_FIELD:
+
info->field_count++;
break;
case ACPI_TYPE_LOCAL_BANK_FIELD:
+
info->field_count++;
break;
case ACPI_TYPE_BUFFER:
+
info->buffer_count++;
break;
case ACPI_TYPE_PACKAGE:
+
info->package_count++;
break;
default:
/* No init required, just exit now */
+
return (AE_OK);
}
break;
default:
+
/* No other types can get here */
+
break;
}
break;
default:
+
break;
}
ACPI_MEMSET(info, 0, sizeof(struct acpi_evaluate_info));
info->prefix_node = device_node;
- info->pathname = METHOD_NAME__INI;
+ info->relative_pathname = METHOD_NAME__INI;
info->parameters = NULL;
info->flags = ACPI_IGNORE_RETURN_VALUE;
/* Ignore error and move on to next device */
- char *scope_name =
- acpi_ns_get_external_pathname(info->resolved_node);
+ char *scope_name = acpi_ns_get_external_pathname(info->node);
ACPI_EXCEPTION((AE_INFO, status, "during %s._INI execution",
scope_name));
* There are several areas that are validated:
*
* 1) The number of input arguments as defined by the method/object in the
- * ASL is validated against the ACPI specification.
+ * ASL is validated against the ACPI specification.
* 2) The type of the return object (if any) is validated against the ACPI
- * specification.
+ * specification.
* 3) For returned package objects, the count of package elements is
- * validated, as well as the type of each package element. Nested
- * packages are supported.
+ * validated, as well as the type of each package element. Nested
+ * packages are supported.
*
* For any problems found, a warning message is issued.
*
******************************************************************************/
/* Local prototypes */
static acpi_status
-acpi_ns_check_reference(struct acpi_predefined_data *data,
+acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object);
static u32 acpi_ns_get_bitmapped_type(union acpi_operand_object *return_object);
/*******************************************************************************
*
- * FUNCTION: acpi_ns_check_predefined_names
+ * FUNCTION: acpi_ns_check_return_value
*
* PARAMETERS: node - Namespace node for the method/object
+ * info - Method execution information block
* user_param_count - Number of parameters actually passed
* return_status - Status from the object evaluation
* return_object_ptr - Pointer to the object returned from the
*
* RETURN: Status
*
- * DESCRIPTION: Check an ACPI name for a match in the predefined name list.
+ * DESCRIPTION: Check the value returned from a predefined name.
*
******************************************************************************/
acpi_status
-acpi_ns_check_predefined_names(struct acpi_namespace_node *node,
- u32 user_param_count,
- acpi_status return_status,
- union acpi_operand_object **return_object_ptr)
+acpi_ns_check_return_value(struct acpi_namespace_node *node,
+ struct acpi_evaluate_info *info,
+ u32 user_param_count,
+ acpi_status return_status,
+ union acpi_operand_object **return_object_ptr)
{
- acpi_status status = AE_OK;
+ acpi_status status;
const union acpi_predefined_info *predefined;
- char *pathname;
- struct acpi_predefined_data *data;
-
- /* Match the name for this method/object against the predefined list */
-
- predefined = acpi_ut_match_predefined_method(node->name.ascii);
-
- /* Get the full pathname to the object, for use in warning messages */
-
- pathname = acpi_ns_get_external_pathname(node);
- if (!pathname) {
- return (AE_OK); /* Could not get pathname, ignore */
- }
-
- /*
- * Check that the parameter count for this method matches the ASL
- * definition. For predefined names, ensure that both the caller and
- * the method itself are in accordance with the ACPI specification.
- */
- acpi_ns_check_parameter_count(pathname, node, user_param_count,
- predefined);
/* If not a predefined name, we cannot validate the return object */
+ predefined = info->predefined;
if (!predefined) {
- goto cleanup;
+ return (AE_OK);
}
/*
* validate the return object
*/
if ((return_status != AE_OK) && (return_status != AE_CTRL_RETURN_VALUE)) {
- goto cleanup;
+ return (AE_OK);
}
/*
if (acpi_gbl_disable_auto_repair ||
(!predefined->info.expected_btypes) ||
(predefined->info.expected_btypes == ACPI_RTYPE_ALL)) {
- goto cleanup;
- }
-
- /* Create the parameter data block for object validation */
-
- data = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_predefined_data));
- if (!data) {
- goto cleanup;
+ return (AE_OK);
}
- data->predefined = predefined;
- data->node = node;
- data->node_flags = node->flags;
- data->pathname = pathname;
/*
* Check that the type of the main return object is what is expected
* for this predefined name
*/
- status = acpi_ns_check_object_type(data, return_object_ptr,
+ status = acpi_ns_check_object_type(info, return_object_ptr,
predefined->info.expected_btypes,
ACPI_NOT_PACKAGE_ELEMENT);
if (ACPI_FAILURE(status)) {
* Note: Package may have been newly created by call above.
*/
if ((*return_object_ptr)->common.type == ACPI_TYPE_PACKAGE) {
- data->parent_package = *return_object_ptr;
- status = acpi_ns_check_package(data, return_object_ptr);
+ info->parent_package = *return_object_ptr;
+ status = acpi_ns_check_package(info, return_object_ptr);
if (ACPI_FAILURE(status)) {
- goto exit;
+
+ /* We might be able to fix some errors */
+
+ if ((status != AE_AML_OPERAND_TYPE) &&
+ (status != AE_AML_OPERAND_VALUE)) {
+ goto exit;
+ }
}
}
* performed on a per-name basis, i.e., the code is specific to
* particular predefined names.
*/
- status = acpi_ns_complex_repairs(data, node, status, return_object_ptr);
+ status = acpi_ns_complex_repairs(info, node, status, return_object_ptr);
exit:
/*
* or more objects, mark the parent node to suppress further warning
* messages during the next evaluation of the same method/object.
*/
- if (ACPI_FAILURE(status) || (data->flags & ACPI_OBJECT_REPAIRED)) {
+ if (ACPI_FAILURE(status) || (info->return_flags & ACPI_OBJECT_REPAIRED)) {
node->flags |= ANOBJ_EVALUATED;
}
- ACPI_FREE(data);
-cleanup:
- ACPI_FREE(pathname);
return (status);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_ns_check_parameter_count
- *
- * PARAMETERS: pathname - Full pathname to the node (for error msgs)
- * node - Namespace node for the method/object
- * user_param_count - Number of args passed in by the caller
- * predefined - Pointer to entry in predefined name table
- *
- * RETURN: None
- *
- * DESCRIPTION: Check that the declared (in ASL/AML) parameter count for a
- * predefined name is what is expected (i.e., what is defined in
- * the ACPI specification for this predefined name.)
- *
- ******************************************************************************/
-
-void
-acpi_ns_check_parameter_count(char *pathname,
- struct acpi_namespace_node *node,
- u32 user_param_count,
- const union acpi_predefined_info *predefined)
-{
- u32 param_count;
- u32 required_params_current;
- u32 required_params_old;
-
- /* Methods have 0-7 parameters. All other types have zero. */
-
- param_count = 0;
- if (node->type == ACPI_TYPE_METHOD) {
- param_count = node->object->method.param_count;
- }
-
- if (!predefined) {
- /*
- * Check the parameter count for non-predefined methods/objects.
- *
- * Warning if too few or too many arguments have been passed by the
- * caller. An incorrect number of arguments may not cause the method
- * to fail. However, the method will fail if there are too few
- * arguments and the method attempts to use one of the missing ones.
- */
- if (user_param_count < param_count) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Insufficient arguments - needs %u, found %u",
- param_count, user_param_count));
- } else if (user_param_count > param_count) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Excess arguments - needs %u, found %u",
- param_count, user_param_count));
- }
- return;
- }
-
- /*
- * Validate the user-supplied parameter count.
- * Allow two different legal argument counts (_SCP, etc.)
- */
- required_params_current =
- predefined->info.argument_list & METHOD_ARG_MASK;
- required_params_old =
- predefined->info.argument_list >> METHOD_ARG_BIT_WIDTH;
-
- if (user_param_count != ACPI_UINT32_MAX) {
- if ((user_param_count != required_params_current) &&
- (user_param_count != required_params_old)) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname,
- ACPI_WARN_ALWAYS,
- "Parameter count mismatch - "
- "caller passed %u, ACPI requires %u",
- user_param_count,
- required_params_current));
- }
- }
-
- /*
- * Check that the ASL-defined parameter count is what is expected for
- * this predefined name (parameter count as defined by the ACPI
- * specification)
- */
- if ((param_count != required_params_current) &&
- (param_count != required_params_old)) {
- ACPI_WARN_PREDEFINED((AE_INFO, pathname, node->flags,
- "Parameter count mismatch - ASL declared %u, ACPI requires %u",
- param_count, required_params_current));
- }
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_ns_check_object_type
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
* expected_btypes - Bitmap of expected return type(s)
******************************************************************************/
acpi_status
-acpi_ns_check_object_type(struct acpi_predefined_data *data,
+acpi_ns_check_object_type(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr,
u32 expected_btypes, u32 package_index)
{
if (return_object &&
ACPI_GET_DESCRIPTOR_TYPE(return_object) == ACPI_DESC_TYPE_NAMED) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid return type - Found a Namespace node [%4.4s] type %s",
return_object->node.name.ascii,
acpi_ut_get_type_name(return_object->node.
* from all of the predefined names (including elements of returned
* packages)
*/
- data->return_btype = acpi_ns_get_bitmapped_type(return_object);
- if (data->return_btype == ACPI_RTYPE_ANY) {
+ info->return_btype = acpi_ns_get_bitmapped_type(return_object);
+ if (info->return_btype == ACPI_RTYPE_ANY) {
/* Not one of the supported objects, must be incorrect */
goto type_error_exit;
/* For reference objects, check that the reference type is correct */
- if ((data->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
- status = acpi_ns_check_reference(data, return_object);
+ if ((info->return_btype & expected_btypes) == ACPI_RTYPE_REFERENCE) {
+ status = acpi_ns_check_reference(info, return_object);
return (status);
}
/* Attempt simple repair of the returned object if necessary */
- status = acpi_ns_simple_repair(data, expected_btypes,
+ status = acpi_ns_simple_repair(info, expected_btypes,
package_index, return_object_ptr);
- return (status);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK); /* Successful repair */
+ }
type_error_exit:
acpi_ut_get_expected_return_types(type_buffer, expected_btypes);
if (package_index == ACPI_NOT_PACKAGE_ELEMENT) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return type mismatch - found %s, expected %s",
acpi_ut_get_object_type_name
(return_object), type_buffer));
} else {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return Package type mismatch at index %u - "
"found %s, expected %s", package_index,
acpi_ut_get_object_type_name
*
* FUNCTION: acpi_ns_check_reference
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object - Object returned from the evaluation of a
* method or object
*
******************************************************************************/
static acpi_status
-acpi_ns_check_reference(struct acpi_predefined_data *data,
+acpi_ns_check_reference(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object)
{
return (AE_OK);
}
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return type mismatch - unexpected reference object type [%s] %2.2X",
acpi_ut_get_reference_name(return_object),
return_object->reference.class));
switch (return_object->common.type) {
case ACPI_TYPE_INTEGER:
+
return_btype = ACPI_RTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
+
return_btype = ACPI_RTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
+
return_btype = ACPI_RTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
+
return_btype = ACPI_RTYPE_PACKAGE;
break;
case ACPI_TYPE_LOCAL_REFERENCE:
+
return_btype = ACPI_RTYPE_REFERENCE;
break;
default:
+
/* Not one of the supported objects, must be incorrect */
return_btype = ACPI_RTYPE_ANY;
/* Local prototypes */
static acpi_status
-acpi_ns_check_package_list(struct acpi_predefined_data *data,
+acpi_ns_check_package_list(struct acpi_evaluate_info *info,
const union acpi_predefined_info *package,
union acpi_operand_object **elements, u32 count);
static acpi_status
-acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
union acpi_operand_object **elements,
u8 type1,
u32 count1,
*
* FUNCTION: acpi_ns_check_package
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
******************************************************************************/
acpi_status
-acpi_ns_check_package(struct acpi_predefined_data *data,
+acpi_ns_check_package(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
/* The package info for this name is in the next table entry */
- package = data->predefined + 1;
+ package = info->predefined + 1;
ACPI_DEBUG_PRINT((ACPI_DB_NAMES,
"%s Validating return Package of Type %X, Count %X\n",
- data->pathname, package->ret_info.type,
+ info->full_pathname, package->ret_info.type,
return_object->package.count));
/*
* For variable-length Packages, we can safely remove all embedded
* and trailing NULL package elements
*/
- acpi_ns_remove_null_elements(data, package->ret_info.type,
+ acpi_ns_remove_null_elements(info, package->ret_info.type,
return_object);
/* Extract package count and elements array */
return (AE_OK);
}
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Return Package has no elements (empty)"));
return (AE_AML_OPERAND_VALUE);
*/
switch (package->ret_info.type) {
case ACPI_PTYPE1_FIXED:
-
/*
* The package count is fixed and there are no sub-packages
*
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Return Package is larger than needed - "
"found %u, expected %u\n",
- data->pathname, count,
+ info->full_pathname, count,
expected_count));
}
/* Validate all elements of the returned package */
- status = acpi_ns_check_package_elements(data, elements,
+ status = acpi_ns_check_package_elements(info, elements,
package->ret_info.
object_type1,
package->ret_info.
break;
case ACPI_PTYPE1_VAR:
-
/*
* The package count is variable, there are no sub-packages, and all
* elements must be of the same type
*/
for (i = 0; i < count; i++) {
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
package->ret_info.
object_type1, i);
if (ACPI_FAILURE(status)) {
break;
case ACPI_PTYPE1_OPTION:
-
/*
* The package count is variable, there are no sub-packages. There are
* a fixed number of required elements, and a variable number of
/* These are the required package elements (0, 1, or 2) */
status =
- acpi_ns_check_object_type(data, elements,
+ acpi_ns_check_object_type(info, elements,
package->
ret_info3.
object_type[i],
/* These are the optional package elements */
status =
- acpi_ns_check_object_type(data, elements,
+ acpi_ns_check_object_type(info, elements,
package->
ret_info3.
tail_object_type,
/* First element is the (Integer) revision */
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
case ACPI_PTYPE2_PKG_COUNT:
/* First element is the (Integer) count of sub-packages to follow */
- status = acpi_ns_check_object_type(data, elements,
+ status = acpi_ns_check_object_type(info, elements,
ACPI_RTYPE_INTEGER, 0);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
case ACPI_PTYPE2:
case ACPI_PTYPE2_MIN:
case ACPI_PTYPE2_COUNT:
case ACPI_PTYPE2_FIX_VAR:
-
/*
* These types all return a single Package that consists of a
* variable number of sub-Packages.
/* Create the new outer package and populate it */
status =
- acpi_ns_wrap_with_package(data, return_object,
+ acpi_ns_wrap_with_package(info, return_object,
return_object_ptr);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the sub-packages */
status =
- acpi_ns_check_package_list(data, package, elements, count);
+ acpi_ns_check_package_list(info, package, elements, count);
break;
default:
/* Should not get here if predefined info table is correct */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid internal return type in table entry: %X",
package->ret_info.type));
/* Error exit for the case with an incorrect package count */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return Package is too small - found %u elements, expected %u",
count, expected_count));
*
* FUNCTION: acpi_ns_check_package_list
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* package - Pointer to package-specific info for method
* elements - Element list of parent package. All elements
* of this list should be of type Package.
******************************************************************************/
static acpi_status
-acpi_ns_check_package_list(struct acpi_predefined_data *data,
+acpi_ns_check_package_list(struct acpi_evaluate_info *info,
const union acpi_predefined_info *package,
union acpi_operand_object **elements, u32 count)
{
for (i = 0; i < count; i++) {
sub_package = *elements;
sub_elements = sub_package->package.elements;
- data->parent_package = sub_package;
+ info->parent_package = sub_package;
/* Each sub-object must be of type Package */
- status = acpi_ns_check_object_type(data, &sub_package,
+ status = acpi_ns_check_object_type(info, &sub_package,
ACPI_RTYPE_PACKAGE, i);
if (ACPI_FAILURE(status)) {
return (status);
/* Examine the different types of expected sub-packages */
- data->parent_package = sub_package;
+ info->parent_package = sub_package;
switch (package->ret_info.type) {
case ACPI_PTYPE2:
case ACPI_PTYPE2_PKG_COUNT:
}
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
package->ret_info.
}
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
package->ret_info.
for (j = 0; j < expected_count; j++) {
status =
- acpi_ns_check_object_type(data,
+ acpi_ns_check_object_type(info,
&sub_elements[j],
package->
ret_info2.
/* Check the type of each sub-package element */
status =
- acpi_ns_check_package_elements(data, sub_elements,
+ acpi_ns_check_package_elements(info, sub_elements,
package->ret_info.
object_type1,
sub_package->package.
break;
case ACPI_PTYPE2_COUNT:
-
/*
* First element is the (Integer) count of elements, including
* the count field (the ACPI name is num_elements)
*/
- status = acpi_ns_check_object_type(data, sub_elements,
+ status = acpi_ns_check_object_type(info, sub_elements,
ACPI_RTYPE_INTEGER,
0);
if (ACPI_FAILURE(status)) {
/* Check the type of each sub-package element */
status =
- acpi_ns_check_package_elements(data,
+ acpi_ns_check_package_elements(info,
(sub_elements + 1),
package->ret_info.
object_type1,
/* The sub-package count was smaller than required */
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname, info->node_flags,
"Return Sub-Package[%u] is too small - found %u elements, expected %u",
i, sub_package->package.count, expected_count));
*
* FUNCTION: acpi_ns_check_package_elements
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* elements - Pointer to the package elements array
* type1 - Object type for first group
* count1 - Count for first group
******************************************************************************/
static acpi_status
-acpi_ns_check_package_elements(struct acpi_predefined_data *data,
+acpi_ns_check_package_elements(struct acpi_evaluate_info *info,
union acpi_operand_object **elements,
u8 type1,
u32 count1,
* The second group can have a count of zero.
*/
for (i = 0; i < count1; i++) {
- status = acpi_ns_check_object_type(data, this_element,
+ status = acpi_ns_check_object_type(info, this_element,
type1, i + start_index);
if (ACPI_FAILURE(status)) {
return (status);
}
for (i = 0; i < count2; i++) {
- status = acpi_ns_check_object_type(data, this_element,
+ status = acpi_ns_check_object_type(info, this_element,
type2,
(i + count1 + start_index));
if (ACPI_FAILURE(status)) {
*
* FUNCTION: acpi_ns_simple_repair
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* expected_btypes - Object types expected
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE_ELEMENT
******************************************************************************/
acpi_status
-acpi_ns_simple_repair(struct acpi_predefined_data *data,
+acpi_ns_simple_repair(struct acpi_evaluate_info *info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
* Special repairs for certain names that are in the repair table.
* Check if this name is in the list of repairable names.
*/
- predefined = acpi_ns_match_simple_repair(data->node,
- data->return_btype,
+ predefined = acpi_ns_match_simple_repair(info->node,
+ info->return_btype,
package_index);
if (predefined) {
if (!return_object) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
}
* Do not perform simple object repair unless the return type is not
* expected.
*/
- if (data->return_btype & expected_btypes) {
+ if (info->return_btype & expected_btypes) {
return (AE_OK);
}
*/
if (!return_object) {
if (expected_btypes && (!(expected_btypes & ACPI_RTYPE_NONE))) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
ACPI_WARN_ALWAYS,
"Missing expected return value"));
* for correct contents (expected object type or types).
*/
status =
- acpi_ns_wrap_with_package(data, return_object, &new_object);
+ acpi_ns_wrap_with_package(info, return_object, &new_object);
if (ACPI_SUCCESS(status)) {
/*
* The original object just had its reference count
* incremented for being inserted into the new package.
*/
*return_object_ptr = new_object; /* New Package object */
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
}
* package object as part of the repair, we don't need to
* change the reference count.
*/
- if (!(data->flags & ACPI_OBJECT_WRAPPED)) {
+ if (!(info->return_flags & ACPI_OBJECT_WRAPPED)) {
new_object->common.reference_count =
return_object->common.reference_count;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s at Package index %u\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object),
package_index));
} else {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted %s to expected %s\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(return_object),
acpi_ut_get_object_type_name(new_object)));
}
acpi_ut_remove_reference(return_object);
*return_object_ptr = new_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_repair_null_element
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* expected_btypes - Object types expected
* package_index - Index of object within parent package (if
* applicable - ACPI_NOT_PACKAGE_ELEMENT
******************************************************************************/
acpi_status
-acpi_ns_repair_null_element(struct acpi_predefined_data *data,
+acpi_ns_repair_null_element(struct acpi_evaluate_info * info,
u32 expected_btypes,
u32 package_index,
union acpi_operand_object **return_object_ptr)
/* Set the reference count according to the parent Package object */
new_object->common.reference_count =
- data->parent_package->common.reference_count;
+ info->parent_package->common.reference_count;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Converted NULL package element to expected %s at index %u\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(new_object),
package_index));
*return_object_ptr = new_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_remove_null_elements
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* package_type - An acpi_return_package_types value
* obj_desc - A Package object
*
*****************************************************************************/
void
-acpi_ns_remove_null_elements(struct acpi_predefined_data *data,
+acpi_ns_remove_null_elements(struct acpi_evaluate_info *info,
u8 package_type,
union acpi_operand_object *obj_desc)
{
case ACPI_PTYPE2_MIN:
case ACPI_PTYPE2_REV_FIXED:
case ACPI_PTYPE2_FIX_VAR:
+
break;
default:
if (new_count < count) {
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Found and removed %u NULL elements\n",
- data->pathname, (count - new_count)));
+ info->full_pathname, (count - new_count)));
/* NULL terminate list and update the package count */
*
* FUNCTION: acpi_ns_wrap_with_package
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* original_object - Pointer to the object to repair.
* obj_desc_ptr - The new package object is returned here
*
******************************************************************************/
acpi_status
-acpi_ns_wrap_with_package(struct acpi_predefined_data *data,
+acpi_ns_wrap_with_package(struct acpi_evaluate_info *info,
union acpi_operand_object *original_object,
union acpi_operand_object **obj_desc_ptr)
{
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Wrapped %s with expected Package object\n",
- data->pathname,
+ info->full_pathname,
acpi_ut_get_object_type_name(original_object)));
/* Return the new object in the object pointer */
*obj_desc_ptr = pkg_obj_desc;
- data->flags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED | ACPI_OBJECT_WRAPPED;
return (AE_OK);
}
* be repaired on a per-name basis.
*/
typedef
-acpi_status(*acpi_repair_function) (struct acpi_predefined_data *data,
+acpi_status(*acpi_repair_function) (struct acpi_evaluate_info * info,
union acpi_operand_object
**return_object_ptr);
*node);
static acpi_status
-acpi_ns_repair_ALR(struct acpi_predefined_data *data,
+acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_CID(struct acpi_predefined_data *data,
+acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_FDE(struct acpi_predefined_data *data,
+acpi_ns_repair_CST(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_HID(struct acpi_predefined_data *data,
+acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_PSS(struct acpi_predefined_data *data,
+acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_repair_TSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr);
static acpi_status
-acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
+acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr);
+
+static acpi_status
+acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr);
+
+static acpi_status
+acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
+ u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name);
-static void
-acpi_ns_sort_list(union acpi_operand_object **elements,
- u32 count, u32 index, u8 sort_direction);
-
/* Values for sort_direction above */
#define ACPI_SORT_ASCENDING 0
#define ACPI_SORT_DESCENDING 1
+static void
+acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index);
+
+static void
+acpi_ns_sort_list(union acpi_operand_object **elements,
+ u32 count, u32 index, u8 sort_direction);
+
/*
* This table contains the names of the predefined methods for which we can
* perform more complex repairs.
*
* _ALR: Sort the list ascending by ambient_illuminance
* _CID: Strings: uppercase all, remove any leading asterisk
+ * _CST: Sort the list ascending by C state type
* _FDE: Convert Buffer of BYTEs to a Buffer of DWORDs
* _GTM: Convert Buffer of BYTEs to a Buffer of DWORDs
* _HID: Strings: uppercase all, remove any leading asterisk
+ * _PRT: Fix reversed source_name and source_index
* _PSS: Sort the list descending by Power
* _TSS: Sort the list descending by Power
*
static const struct acpi_repair_info acpi_ns_repairable_names[] = {
{"_ALR", acpi_ns_repair_ALR},
{"_CID", acpi_ns_repair_CID},
+ {"_CST", acpi_ns_repair_CST},
{"_FDE", acpi_ns_repair_FDE},
{"_GTM", acpi_ns_repair_FDE}, /* _GTM has same repair as _FDE */
{"_HID", acpi_ns_repair_HID},
+ {"_PRT", acpi_ns_repair_PRT},
{"_PSS", acpi_ns_repair_PSS},
{"_TSS", acpi_ns_repair_TSS},
{{0, 0, 0, 0}, NULL} /* Table terminator */
*
* FUNCTION: acpi_ns_complex_repairs
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* node - Namespace node for the method/object
* validate_status - Original status of earlier validation
* return_object_ptr - Pointer to the object returned from the
*****************************************************************************/
acpi_status
-acpi_ns_complex_repairs(struct acpi_predefined_data *data,
+acpi_ns_complex_repairs(struct acpi_evaluate_info *info,
struct acpi_namespace_node *node,
acpi_status validate_status,
union acpi_operand_object **return_object_ptr)
return (validate_status);
}
- status = predefined->repair_function(data, return_object_ptr);
+ status = predefined->repair_function(info, return_object_ptr);
return (status);
}
*
* FUNCTION: acpi_ns_repair_ALR
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_ALR(struct acpi_predefined_data *data,
+acpi_ns_repair_ALR(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
acpi_status status;
- status = acpi_ns_check_sorted_list(data, return_object, 2, 1,
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 2, 1,
ACPI_SORT_ASCENDING,
"AmbientIlluminance");
*
* FUNCTION: acpi_ns_repair_FDE
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_FDE(struct acpi_predefined_data *data,
+acpi_ns_repair_FDE(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
/* We can only repair if we have exactly 5 BYTEs */
if (return_object->buffer.length != ACPI_FDE_BYTE_BUFFER_SIZE) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
- data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Incorrect return buffer length %u, expected %u",
return_object->buffer.length,
ACPI_FDE_DWORD_BUFFER_SIZE));
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s Expanded Byte Buffer to expected DWord Buffer\n",
- data->pathname));
+ info->full_pathname));
break;
default:
+
return (AE_AML_OPERAND_TYPE);
}
acpi_ut_remove_reference(return_object);
*return_object_ptr = buffer_object;
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
*
* FUNCTION: acpi_ns_repair_CID
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_CID(struct acpi_predefined_data *data,
+acpi_ns_repair_CID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
acpi_status status;
/* Check for _CID as a simple string */
if (return_object->common.type == ACPI_TYPE_STRING) {
- status = acpi_ns_repair_HID(data, return_object_ptr);
+ status = acpi_ns_repair_HID(info, return_object_ptr);
return (status);
}
original_element = *element_ptr;
original_ref_count = original_element->common.reference_count;
- status = acpi_ns_repair_HID(data, element_ptr);
+ status = acpi_ns_repair_HID(info, element_ptr);
if (ACPI_FAILURE(status)) {
return (status);
}
return (AE_OK);
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_repair_CST
+ *
+ * PARAMETERS: info - Method execution information block
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status. AE_OK if object is OK or was repaired successfully
+ *
+ * DESCRIPTION: Repair for the _CST object:
+ * 1. Sort the list ascending by C state type
+ * 2. Ensure type cannot be zero
+ * 3. A sub-package count of zero means _CST is meaningless
+ * 4. Count must match the number of C state sub-packages
+ *
+ *****************************************************************************/
+
+static acpi_status
+acpi_ns_repair_CST(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ union acpi_operand_object **outer_elements;
+ u32 outer_element_count;
+ union acpi_operand_object *obj_desc;
+ acpi_status status;
+ u8 removing;
+ u32 i;
+
+ ACPI_FUNCTION_NAME(ns_repair_CST);
+
+ /*
+ * Check if the C-state type values are proportional.
+ */
+ outer_element_count = return_object->package.count - 1;
+ i = 0;
+ while (i < outer_element_count) {
+ outer_elements = &return_object->package.elements[i + 1];
+ removing = FALSE;
+
+ if ((*outer_elements)->package.count == 0) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "SubPackage[%u] - removing entry due to zero count",
+ i));
+ removing = TRUE;
+ goto remove_element;
+ }
+
+ obj_desc = (*outer_elements)->package.elements[1]; /* Index1 = Type */
+ if ((u32)obj_desc->integer.value == 0) {
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "SubPackage[%u] - removing entry due to invalid Type(0)",
+ i));
+ removing = TRUE;
+ }
+
+ remove_element:
+ if (removing) {
+ acpi_ns_remove_element(return_object, i + 1);
+ outer_element_count--;
+ } else {
+ i++;
+ }
+ }
+
+ /* Update top-level package count, Type "Integer" checked elsewhere */
+
+ obj_desc = return_object->package.elements[0];
+ obj_desc->integer.value = outer_element_count;
+
+ /*
+ * Entries (subpackages) in the _CST Package must be sorted by the
+ * C-state type, in ascending order.
+ */
+ status = acpi_ns_check_sorted_list(info, return_object, 1, 4, 1,
+ ACPI_SORT_ASCENDING, "C-State Type");
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
+
+ return (AE_OK);
+}
+
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_HID
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_HID(struct acpi_predefined_data *data,
+acpi_ns_repair_HID(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
}
if (return_object->string.length == 0) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"Invalid zero-length _HID or _CID string"));
/* Return AE_OK anyway, let driver handle it */
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
return (AE_OK);
}
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Removed invalid leading asterisk\n",
- data->pathname));
+ info->full_pathname));
}
/*
/******************************************************************************
*
- * FUNCTION: acpi_ns_repair_TSS
+ * FUNCTION: acpi_ns_repair_PRT
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
* RETURN: Status. AE_OK if object is OK or was repaired successfully
*
- * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
- * descending by the power dissipation values.
+ * DESCRIPTION: Repair for the _PRT object. If necessary, fix reversed
+ * source_name and source_index field, a common BIOS bug.
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_TSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PRT(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
- union acpi_operand_object *return_object = *return_object_ptr;
- acpi_status status;
- struct acpi_namespace_node *node;
+ union acpi_operand_object *package_object = *return_object_ptr;
+ union acpi_operand_object **top_object_list;
+ union acpi_operand_object **sub_object_list;
+ union acpi_operand_object *obj_desc;
+ u32 element_count;
+ u32 index;
- /*
- * We can only sort the _TSS return package if there is no _PSS in the
- * same scope. This is because if _PSS is present, the ACPI specification
- * dictates that the _TSS Power Dissipation field is to be ignored, and
- * therefore some BIOSs leave garbage values in the _TSS Power field(s).
- * In this case, it is best to just return the _TSS package as-is.
- * (May, 2011)
- */
- status =
- acpi_ns_get_node(data->node, "^_PSS", ACPI_NS_NO_UPSEARCH, &node);
- if (ACPI_SUCCESS(status)) {
- return (AE_OK);
- }
+ /* Each element in the _PRT package is a subpackage */
- status = acpi_ns_check_sorted_list(data, return_object, 5, 1,
- ACPI_SORT_DESCENDING,
- "PowerDissipation");
+ top_object_list = package_object->package.elements;
+ element_count = package_object->package.count;
- return (status);
+ for (index = 0; index < element_count; index++) {
+ sub_object_list = (*top_object_list)->package.elements;
+
+ /*
+ * If the BIOS has erroneously reversed the _PRT source_name (index 2)
+ * and the source_index (index 3), fix it. _PRT is important enough to
+ * workaround this BIOS error. This also provides compatibility with
+ * other ACPI implementations.
+ */
+ obj_desc = sub_object_list[3];
+ if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
+ sub_object_list[3] = sub_object_list[2];
+ sub_object_list[2] = obj_desc;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
+
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
+ "PRT[%X]: Fixed reversed SourceName and SourceIndex",
+ index));
+ }
+
+ /* Point to the next union acpi_operand_object in the top level package */
+
+ top_object_list++;
+ }
+
+ return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: acpi_ns_repair_PSS
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object_ptr - Pointer to the object returned from the
* evaluation of a method or object
*
*****************************************************************************/
static acpi_status
-acpi_ns_repair_PSS(struct acpi_predefined_data *data,
+acpi_ns_repair_PSS(struct acpi_evaluate_info *info,
union acpi_operand_object **return_object_ptr)
{
union acpi_operand_object *return_object = *return_object_ptr;
* incorrectly sorted, sort it. We sort by cpu_frequency, since this
* should be proportional to the power.
*/
- status = acpi_ns_check_sorted_list(data, return_object, 6, 0,
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 6, 0,
ACPI_SORT_DESCENDING,
"CpuFrequency");
if (ACPI_FAILURE(status)) {
obj_desc = elements[1]; /* Index1 = power_dissipation */
if ((u32) obj_desc->integer.value > previous_value) {
- ACPI_WARN_PREDEFINED((AE_INFO, data->pathname,
- data->node_flags,
+ ACPI_WARN_PREDEFINED((AE_INFO, info->full_pathname,
+ info->node_flags,
"SubPackage[%u,%u] - suspicious power dissipation values",
i - 1, i));
}
return (AE_OK);
}
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_repair_TSS
+ *
+ * PARAMETERS: info - Method execution information block
+ * return_object_ptr - Pointer to the object returned from the
+ * evaluation of a method or object
+ *
+ * RETURN: Status. AE_OK if object is OK or was repaired successfully
+ *
+ * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list
+ * descending by the power dissipation values.
+ *
+ *****************************************************************************/
+
+static acpi_status
+acpi_ns_repair_TSS(struct acpi_evaluate_info *info,
+ union acpi_operand_object **return_object_ptr)
+{
+ union acpi_operand_object *return_object = *return_object_ptr;
+ acpi_status status;
+ struct acpi_namespace_node *node;
+
+ /*
+ * We can only sort the _TSS return package if there is no _PSS in the
+ * same scope. This is because if _PSS is present, the ACPI specification
+ * dictates that the _TSS Power Dissipation field is to be ignored, and
+ * therefore some BIOSs leave garbage values in the _TSS Power field(s).
+ * In this case, it is best to just return the _TSS package as-is.
+ * (May, 2011)
+ */
+ status = acpi_ns_get_node(info->node, "^_PSS",
+ ACPI_NS_NO_UPSEARCH, &node);
+ if (ACPI_SUCCESS(status)) {
+ return (AE_OK);
+ }
+
+ status = acpi_ns_check_sorted_list(info, return_object, 0, 5, 1,
+ ACPI_SORT_DESCENDING,
+ "PowerDissipation");
+
+ return (status);
+}
+
/******************************************************************************
*
* FUNCTION: acpi_ns_check_sorted_list
*
- * PARAMETERS: data - Pointer to validation data structure
+ * PARAMETERS: info - Method execution information block
* return_object - Pointer to the top-level returned object
+ * start_index - Index of the first sub-package
* expected_count - Minimum length of each sub-package
* sort_index - Sub-package entry to sort on
* sort_direction - Ascending or descending
*****************************************************************************/
static acpi_status
-acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
+acpi_ns_check_sorted_list(struct acpi_evaluate_info *info,
union acpi_operand_object *return_object,
+ u32 start_index,
u32 expected_count,
u32 sort_index,
u8 sort_direction, char *sort_key_name)
* Any NULL elements should have been removed by earlier call
* to acpi_ns_remove_null_elements.
*/
- outer_elements = return_object->package.elements;
outer_element_count = return_object->package.count;
- if (!outer_element_count) {
+ if (!outer_element_count || start_index >= outer_element_count) {
return (AE_AML_PACKAGE_LIMIT);
}
+ outer_elements = &return_object->package.elements[start_index];
+ outer_element_count -= start_index;
+
previous_value = 0;
if (sort_direction == ACPI_SORT_DESCENDING) {
previous_value = ACPI_UINT32_MAX;
(obj_desc->integer.value < previous_value)) ||
((sort_direction == ACPI_SORT_DESCENDING) &&
(obj_desc->integer.value > previous_value))) {
- acpi_ns_sort_list(return_object->package.elements,
+ acpi_ns_sort_list(&return_object->package.
+ elements[start_index],
outer_element_count, sort_index,
sort_direction);
- data->flags |= ACPI_OBJECT_REPAIRED;
+ info->return_flags |= ACPI_OBJECT_REPAIRED;
ACPI_DEBUG_PRINT((ACPI_DB_REPAIR,
"%s: Repaired unsorted list - now sorted by %s\n",
- data->pathname, sort_key_name));
+ info->full_pathname, sort_key_name));
return (AE_OK);
}
}
}
}
+
+/******************************************************************************
+ *
+ * FUNCTION: acpi_ns_remove_element
+ *
+ * PARAMETERS: obj_desc - Package object element list
+ * index - Index of element to remove
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Remove the requested element of a package and delete it.
+ *
+ *****************************************************************************/
+
+static void
+acpi_ns_remove_element(union acpi_operand_object *obj_desc, u32 index)
+{
+ union acpi_operand_object **source;
+ union acpi_operand_object **dest;
+ u32 count;
+ u32 new_count;
+ u32 i;
+
+ ACPI_FUNCTION_NAME(ns_remove_element);
+
+ count = obj_desc->package.count;
+ new_count = count - 1;
+
+ source = obj_desc->package.elements;
+ dest = source;
+
+ /* Examine all elements of the package object, remove matched index */
+
+ for (i = 0; i < count; i++) {
+ if (i == index) {
+ acpi_ut_remove_reference(*source); /* Remove one ref for being in pkg */
+ acpi_ut_remove_reference(*source);
+ } else {
+ *dest = *source;
+ dest++;
+ }
+ source++;
+ }
+
+ /* NULL terminate list and update the package count */
+
+ *dest = NULL;
+ obj_desc->package.count = new_count;
+}
switch (internal_name[0]) {
case AML_ROOT_PREFIX:
+
prefix_length = 1;
break;
case AML_PARENT_PREFIX:
+
for (i = 0; i < internal_name_length; i++) {
if (ACPI_IS_PARENT_PREFIX(internal_name[i])) {
prefix_length = i + 1;
break;
default:
+
break;
}
return_ACPI_STATUS(AE_NO_MEMORY);
}
- info->pathname = pathname;
-
/* Convert and validate the device handle */
info->prefix_node = acpi_ns_validate_handle(handle);
}
/*
- * If there are parameters to be passed to a control method, the external
- * objects must all be converted to internal objects
+ * Get the actual namespace node for the target object.
+ * Handles these cases:
+ *
+ * 1) Null node, valid pathname from root (absolute path)
+ * 2) Node and valid pathname (path relative to Node)
+ * 3) Node, Null pathname
+ */
+ if ((pathname) && (ACPI_IS_ROOT_PREFIX(pathname[0]))) {
+
+ /* The path is fully qualified, just evaluate by name */
+
+ info->prefix_node = NULL;
+ } else if (!handle) {
+ /*
+ * A handle is optional iff a fully qualified pathname is specified.
+ * Since we've already handled fully qualified names above, this is
+ * an error.
+ */
+ if (!pathname) {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Both Handle and Pathname are NULL"));
+ } else {
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Null Handle with relative pathname [%s]",
+ pathname));
+ }
+
+ status = AE_BAD_PARAMETER;
+ goto cleanup;
+ }
+
+ info->relative_pathname = pathname;
+
+ /*
+ * Convert all external objects passed as arguments to the
+ * internal version(s).
*/
if (external_params && external_params->count) {
+ info->param_count = (u16)external_params->count;
+
+ /* Warn on impossible argument count */
+
+ if (info->param_count > ACPI_METHOD_NUM_ARGS) {
+ ACPI_WARN_PREDEFINED((AE_INFO, pathname,
+ ACPI_WARN_ALWAYS,
+ "Excess arguments (%u) - using only %u",
+ info->param_count,
+ ACPI_METHOD_NUM_ARGS));
+
+ info->param_count = ACPI_METHOD_NUM_ARGS;
+ }
+
/*
* Allocate a new parameter block for the internal objects
* Add 1 to count to allow for null terminated internal list
*/
- info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
- external_params->
- count +
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size) info->
+ param_count +
1) * sizeof(void *));
if (!info->parameters) {
status = AE_NO_MEMORY;
/* Convert each external object in the list to an internal object */
- for (i = 0; i < external_params->count; i++) {
+ for (i = 0; i < info->param_count; i++) {
status =
acpi_ut_copy_eobject_to_iobject(&external_params->
pointer[i],
goto cleanup;
}
}
- info->parameters[external_params->count] = NULL;
+
+ info->parameters[info->param_count] = NULL;
}
+#if 0
+
/*
- * Three major cases:
- * 1) Fully qualified pathname
- * 2) No handle, not fully qualified pathname (error)
- * 3) Valid handle
+ * Begin incoming argument count analysis. Check for too few args
+ * and too many args.
*/
- if ((pathname) && (ACPI_IS_ROOT_PREFIX(pathname[0]))) {
- /* The path is fully qualified, just evaluate by name */
+ switch (acpi_ns_get_type(info->node)) {
+ case ACPI_TYPE_METHOD:
+
+ /* Check incoming argument count against the method definition */
+
+ if (info->obj_desc->method.param_count > info->param_count) {
+ ACPI_ERROR((AE_INFO,
+ "Insufficient arguments (%u) - %u are required",
+ info->param_count,
+ info->obj_desc->method.param_count));
+
+ status = AE_MISSING_ARGUMENTS;
+ goto cleanup;
+ }
+
+ else if (info->obj_desc->method.param_count < info->param_count) {
+ ACPI_WARNING((AE_INFO,
+ "Excess arguments (%u) - only %u are required",
+ info->param_count,
+ info->obj_desc->method.param_count));
+
+ /* Just pass the required number of arguments */
+
+ info->param_count = info->obj_desc->method.param_count;
+ }
- info->prefix_node = NULL;
- status = acpi_ns_evaluate(info);
- } else if (!handle) {
/*
- * A handle is optional iff a fully qualified pathname is specified.
- * Since we've already handled fully qualified names above, this is
- * an error
+ * Any incoming external objects to be passed as arguments to the
+ * method must be converted to internal objects
*/
- if (!pathname) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Both Handle and Pathname are NULL"));
- } else {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Null Handle with relative pathname [%s]",
- pathname));
+ if (info->param_count) {
+ /*
+ * Allocate a new parameter block for the internal objects
+ * Add 1 to count to allow for null terminated internal list
+ */
+ info->parameters = ACPI_ALLOCATE_ZEROED(((acpi_size)
+ info->
+ param_count +
+ 1) *
+ sizeof(void *));
+ if (!info->parameters) {
+ status = AE_NO_MEMORY;
+ goto cleanup;
+ }
+
+ /* Convert each external object in the list to an internal object */
+
+ for (i = 0; i < info->param_count; i++) {
+ status =
+ acpi_ut_copy_eobject_to_iobject
+ (&external_params->pointer[i],
+ &info->parameters[i]);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+ }
+
+ info->parameters[info->param_count] = NULL;
}
+ break;
- status = AE_BAD_PARAMETER;
- } else {
- /* We have a namespace a node and a possible relative path */
+ default:
+
+ /* Warn if arguments passed to an object that is not a method */
- status = acpi_ns_evaluate(info);
+ if (info->param_count) {
+ ACPI_WARNING((AE_INFO,
+ "%u arguments were passed to a non-method ACPI object",
+ info->param_count));
+ }
+ break;
}
+#endif
+
+ /* Now we can evaluate the object */
+
+ status = acpi_ns_evaluate(info);
+
/*
* If we are expecting a return value, and all went well above,
* copy the return value to an external object.
break;
default:
+
return;
}
switch (opcode) {
case AML_BYTE_OP: /* AML_BYTEDATA_ARG */
+
buffer_length =
ACPI_GET8(parser_state->aml);
parser_state->aml += 1;
break;
case AML_WORD_OP: /* AML_WORDDATA_ARG */
+
buffer_length =
ACPI_GET16(parser_state->aml);
parser_state->aml += 2;
break;
case AML_DWORD_OP: /* AML_DWORDATA_ARG */
+
buffer_length =
ACPI_GET32(parser_state->aml);
parser_state->aml += 4;
break;
default:
+
buffer_length = 0;
break;
}
case AML_IF_OP:
case AML_ELSE_OP:
case AML_WHILE_OP:
-
/*
* Currently supported module-level opcodes are:
* IF/ELSE/WHILE. These appear to be the most common,
default:
/* No action for all other opcodes */
+
break;
}
switch (status) {
case AE_OK:
+
break;
case AE_CTRL_TRANSFER:
switch (parent_info->class) {
case AML_CLASS_CONTROL:
+
break;
case AML_CLASS_CREATE:
-
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
break;
case AML_CLASS_NAMED_OBJECT:
-
/*
* These opcodes contain term_arg operands. The current
* op must be replaced by a placeholder return op
break;
default:
+
/* All others have no children */
+
break;
}
}
if ((!acpi_gbl_trace_method_name) ||
- (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
+ (acpi_gbl_trace_method_name != info->node->name.integer)) {
goto exit;
}
}
if ((!acpi_gbl_trace_method_name) ||
- (acpi_gbl_trace_method_name != info->resolved_node->name.integer)) {
+ (acpi_gbl_trace_method_name != info->node->name.integer)) {
goto exit;
}
/* Validate the Info and method Node */
- if (!info || !info->resolved_node) {
+ if (!info || !info->node) {
return_ACPI_STATUS(AE_NULL_ENTRY);
}
/* Init for new method, wait on concurrency semaphore */
status =
- acpi_ds_begin_method_execution(info->resolved_node, info->obj_desc,
- NULL);
+ acpi_ds_begin_method_execution(info->node, info->obj_desc, NULL);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
*/
ACPI_DEBUG_PRINT((ACPI_DB_PARSE,
"**** Begin Method Parse/Execute [%4.4s] **** Node=%p Obj=%p\n",
- info->resolved_node->name.ascii, info->resolved_node,
- info->obj_desc));
+ info->node->name.ascii, info->node, info->obj_desc));
/* Create and init a Root Node */
goto cleanup;
}
- status = acpi_ds_init_aml_walk(walk_state, op, info->resolved_node,
+ status = acpi_ds_init_aml_walk(walk_state, op, info->node,
info->obj_desc->method.aml_start,
info->obj_desc->method.aml_length, info,
info->pass_number);
break;
default:
+
break;
}
break;
default:
+
break;
}
name_found = FALSE;
- for (table_index = 0; table_index < 4 && !name_found;
- table_index++) {
+ for (table_index = 0;
+ table_index < package_element->package.count
+ && !name_found; table_index++) {
if (*sub_object_list && /* Null object allowed */
((ACPI_TYPE_STRING ==
(*sub_object_list)->common.type) ||
*/
user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4);
- /* Each element of the top-level package must also be a package */
-
- if ((*top_object_list)->common.type != ACPI_TYPE_PACKAGE) {
- ACPI_ERROR((AE_INFO,
- "(PRT[%u]) Need sub-package, found %s",
- index,
- acpi_ut_get_object_type_name
- (*top_object_list)));
- return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
- }
-
/* Each sub-package must be of length 4 */
if ((*top_object_list)->package.count != 4) {
user_prt->pin = (u32) obj_desc->integer.value;
- /*
- * If the BIOS has erroneously reversed the _PRT source_name (index 2)
- * and the source_index (index 3), fix it. _PRT is important enough to
- * workaround this BIOS error. This also provides compatibility with
- * other ACPI implementations.
- */
- obj_desc = sub_object_list[3];
- if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) {
- sub_object_list[3] = sub_object_list[2];
- sub_object_list[2] = obj_desc;
-
- ACPI_WARNING((AE_INFO,
- "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
- index));
- }
-
/*
* 3) Third subobject: Dereference the PRT.source_name
* The name may be unresolved (slack mode), so allow a null object
/* Strings */
case ACPI_RSD_LITERAL:
+
acpi_rs_out_string(name,
ACPI_CAST_PTR(char, table->pointer));
break;
case ACPI_RSD_STRING:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char, target));
break;
/* Data items, 8/16/32/64 bit */
case ACPI_RSD_UINT8:
+
if (table->pointer) {
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
break;
case ACPI_RSD_UINT16:
+
acpi_rs_out_integer16(name, ACPI_GET16(target));
break;
case ACPI_RSD_UINT32:
+
acpi_rs_out_integer32(name, ACPI_GET32(target));
break;
case ACPI_RSD_UINT64:
+
acpi_rs_out_integer64(name, ACPI_GET64(target));
break;
/* Flags: 1-bit and 2-bit flags supported */
case ACPI_RSD_1BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
case ACPI_RSD_2BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
case ACPI_RSD_3BITFLAG:
+
acpi_rs_out_string(name, ACPI_CAST_PTR(char,
table->
pointer[*target &
break;
default:
+
acpi_os_printf("**** Invalid table opcode [%X] ****\n",
table->opcode);
return;
break;
case ACPI_RSC_COUNT_GPIO_RES:
-
/*
* Vendor data is optional (length/offset may both be zero)
* Examine vendor data length field first
*/
switch (info->resource_offset) {
case ACPI_RSC_COMPARE_AML_LENGTH:
+
if (aml_resource_length != info->value) {
goto exit;
}
break;
case ACPI_RSC_COMPARE_VALUE:
+
if (ACPI_GET8(source) != info->value) {
goto exit;
}
case ACPI_RSC_MOVE_GPIO_RES:
case ACPI_RSC_MOVE_SERIAL_VEN:
case ACPI_RSC_MOVE_SERIAL_RES:
+
ACPI_MEMCPY(destination, source, item_count);
return;
*/
case ACPI_RSC_MOVE16:
case ACPI_RSC_MOVE_GPIO_PIN:
+
ACPI_MOVE_16_TO_16(&ACPI_CAST_PTR(u16, destination)[i],
&ACPI_CAST_PTR(u16, source)[i]);
break;
case ACPI_RSC_MOVE32:
+
ACPI_MOVE_32_TO_32(&ACPI_CAST_PTR(u32, destination)[i],
&ACPI_CAST_PTR(u32, source)[i]);
break;
case ACPI_RSC_MOVE64:
+
ACPI_MOVE_64_TO_64(&ACPI_CAST_PTR(u64, destination)[i],
&ACPI_CAST_PTR(u64, source)[i]);
break;
default:
+
return;
}
}
}
info->prefix_node = node;
- info->pathname = METHOD_NAME__SRS;
+ info->relative_pathname = METHOD_NAME__SRS;
info->parameters = args;
info->flags = ACPI_IGNORE_RETURN_VALUE;
break;
default:
+
return (AE_BAD_PARAMETER);
}
ACPI_BIOS_ERROR((AE_INFO,
"Table has invalid signature [%4.4s] (0x%8.8X), "
"must be SSDT or OEMx",
- acpi_ut_valid_acpi_name(*(u32 *)table_desc->
- pointer->
+ acpi_ut_valid_acpi_name(table_desc->pointer->
signature) ?
table_desc->pointer->signature : "????",
*(u32 *)table_desc->pointer->signature));
}
switch (table_desc->flags & ACPI_TABLE_ORIGIN_MASK) {
case ACPI_TABLE_ORIGIN_MAPPED:
+
acpi_os_unmap_memory(table_desc->pointer, table_desc->length);
break;
+
case ACPI_TABLE_ORIGIN_ALLOCATED:
+
ACPI_FREE(table_desc->pointer);
break;
/* Not mapped or allocated, there is nothing we can do */
default:
+
return;
}
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: tbprint - Table output utilities
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "actables.h"
+
+#define _COMPONENT ACPI_TABLES
+ACPI_MODULE_NAME("tbprint")
+
+/* Local prototypes */
+static void acpi_tb_fix_string(char *string, acpi_size length);
+
+static void
+acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
+ struct acpi_table_header *header);
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_fix_string
+ *
+ * PARAMETERS: string - String to be repaired
+ * length - Maximum length
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
+ * with a question mark '?'.
+ *
+ ******************************************************************************/
+
+static void acpi_tb_fix_string(char *string, acpi_size length)
+{
+
+ while (length && *string) {
+ if (!ACPI_IS_PRINT(*string)) {
+ *string = '?';
+ }
+ string++;
+ length--;
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_cleanup_table_header
+ *
+ * PARAMETERS: out_header - Where the cleaned header is returned
+ * header - Input ACPI table header
+ *
+ * RETURN: Returns the cleaned header in out_header
+ *
+ * DESCRIPTION: Copy the table header and ensure that all "string" fields in
+ * the header consist of printable characters.
+ *
+ ******************************************************************************/
+
+static void
+acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
+ struct acpi_table_header *header)
+{
+
+ ACPI_MEMCPY(out_header, header, sizeof(struct acpi_table_header));
+
+ acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);
+ acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
+ acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
+ acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_print_table_header
+ *
+ * PARAMETERS: address - Table physical address
+ * header - Table header
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
+ *
+ ******************************************************************************/
+
+void
+acpi_tb_print_table_header(acpi_physical_address address,
+ struct acpi_table_header *header)
+{
+ struct acpi_table_header local_header;
+
+ /*
+ * The reason that the Address is cast to a void pointer is so that we
+ * can use %p which will work properly on both 32-bit and 64-bit hosts.
+ */
+ if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {
+
+ /* FACS only has signature and length fields */
+
+ ACPI_INFO((AE_INFO, "%4.4s %p %05X",
+ header->signature, ACPI_CAST_PTR(void, address),
+ header->length));
+ } else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) {
+
+ /* RSDP has no common fields */
+
+ ACPI_MEMCPY(local_header.oem_id,
+ ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->oem_id, ACPI_OEM_ID_SIZE);
+ acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
+
+ ACPI_INFO((AE_INFO, "RSDP %p %05X (v%.2d %6.6s)",
+ ACPI_CAST_PTR(void, address),
+ (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
+ revision >
+ 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->length : 20,
+ ACPI_CAST_PTR(struct acpi_table_rsdp,
+ header)->revision,
+ local_header.oem_id));
+ } else {
+ /* Standard ACPI table with full common header */
+
+ acpi_tb_cleanup_table_header(&local_header, header);
+
+ ACPI_INFO((AE_INFO,
+ "%4.4s %p %05X (v%.2d %6.6s %8.8s %08X %4.4s %08X)",
+ local_header.signature, ACPI_CAST_PTR(void, address),
+ local_header.length, local_header.revision,
+ local_header.oem_id, local_header.oem_table_id,
+ local_header.oem_revision,
+ local_header.asl_compiler_id,
+ local_header.asl_compiler_revision));
+ }
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_validate_checksum
+ *
+ * PARAMETERS: table - ACPI table to verify
+ * length - Length of entire table
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
+ * exception on bad checksum.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
+{
+ u8 checksum;
+
+ /* Compute the checksum on the table */
+
+ checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
+
+ /* Checksum ok? (should be zero) */
+
+ if (checksum) {
+ ACPI_BIOS_WARNING((AE_INFO,
+ "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
+ "should be 0x%2.2X",
+ table->signature, table->checksum,
+ (u8)(table->checksum - checksum)));
+
+#if (ACPI_CHECKSUM_ABORT)
+ return (AE_BAD_CHECKSUM);
+#endif
+ }
+
+ return (AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_checksum
+ *
+ * PARAMETERS: buffer - Pointer to memory region to be checked
+ * length - Length of this memory region
+ *
+ * RETURN: Checksum (u8)
+ *
+ * DESCRIPTION: Calculates circular checksum of memory region.
+ *
+ ******************************************************************************/
+
+u8 acpi_tb_checksum(u8 *buffer, u32 length)
+{
+ u8 sum = 0;
+ u8 *end = buffer + length;
+
+ while (buffer < end) {
+ sum = (u8)(sum + *(buffer++));
+ }
+
+ return (sum);
+}
/******************************************************************************
*
- * Module Name: tbutils - table utilities
+ * Module Name: tbutils - ACPI Table utilities
*
*****************************************************************************/
ACPI_MODULE_NAME("tbutils")
/* Local prototypes */
-static void acpi_tb_fix_string(char *string, acpi_size length);
-
-static void
-acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
- struct acpi_table_header *header);
-
static acpi_physical_address
acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size);
return (FALSE);
}
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_fix_string
- *
- * PARAMETERS: string - String to be repaired
- * length - Maximum length
- *
- * RETURN: None
- *
- * DESCRIPTION: Replace every non-printable or non-ascii byte in the string
- * with a question mark '?'.
- *
- ******************************************************************************/
-
-static void acpi_tb_fix_string(char *string, acpi_size length)
-{
-
- while (length && *string) {
- if (!ACPI_IS_PRINT(*string)) {
- *string = '?';
- }
- string++;
- length--;
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_cleanup_table_header
- *
- * PARAMETERS: out_header - Where the cleaned header is returned
- * header - Input ACPI table header
- *
- * RETURN: Returns the cleaned header in out_header
- *
- * DESCRIPTION: Copy the table header and ensure that all "string" fields in
- * the header consist of printable characters.
- *
- ******************************************************************************/
-
-static void
-acpi_tb_cleanup_table_header(struct acpi_table_header *out_header,
- struct acpi_table_header *header)
-{
-
- ACPI_MEMCPY(out_header, header, sizeof(struct acpi_table_header));
-
- acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE);
- acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE);
- acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE);
- acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_print_table_header
- *
- * PARAMETERS: address - Table physical address
- * header - Table header
- *
- * RETURN: None
- *
- * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP.
- *
- ******************************************************************************/
-
-void
-acpi_tb_print_table_header(acpi_physical_address address,
- struct acpi_table_header *header)
-{
- struct acpi_table_header local_header;
-
- /*
- * The reason that the Address is cast to a void pointer is so that we
- * can use %p which will work properly on both 32-bit and 64-bit hosts.
- */
- if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) {
-
- /* FACS only has signature and length fields */
-
- ACPI_INFO((AE_INFO, "%4.4s %p %05X",
- header->signature, ACPI_CAST_PTR(void, address),
- header->length));
- } else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) {
-
- /* RSDP has no common fields */
-
- ACPI_MEMCPY(local_header.oem_id,
- ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->oem_id, ACPI_OEM_ID_SIZE);
- acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE);
-
- ACPI_INFO((AE_INFO, "RSDP %p %05X (v%.2d %6.6s)",
- ACPI_CAST_PTR (void, address),
- (ACPI_CAST_PTR(struct acpi_table_rsdp, header)->
- revision >
- 0) ? ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->length : 20,
- ACPI_CAST_PTR(struct acpi_table_rsdp,
- header)->revision,
- local_header.oem_id));
- } else {
- /* Standard ACPI table with full common header */
-
- acpi_tb_cleanup_table_header(&local_header, header);
-
- ACPI_INFO((AE_INFO,
- "%4.4s %p %05X (v%.2d %6.6s %8.8s %08X %4.4s %08X)",
- local_header.signature, ACPI_CAST_PTR(void, address),
- local_header.length, local_header.revision,
- local_header.oem_id, local_header.oem_table_id,
- local_header.oem_revision,
- local_header.asl_compiler_id,
- local_header.asl_compiler_revision));
-
- }
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_validate_checksum
- *
- * PARAMETERS: table - ACPI table to verify
- * length - Length of entire table
- *
- * RETURN: Status
- *
- * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns
- * exception on bad checksum.
- *
- ******************************************************************************/
-
-acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length)
-{
- u8 checksum;
-
- /* Compute the checksum on the table */
-
- checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length);
-
- /* Checksum ok? (should be zero) */
-
- if (checksum) {
- ACPI_BIOS_WARNING((AE_INFO,
- "Incorrect checksum in table [%4.4s] - 0x%2.2X, "
- "should be 0x%2.2X",
- table->signature, table->checksum,
- (u8)(table->checksum - checksum)));
-
-#if (ACPI_CHECKSUM_ABORT)
-
- return (AE_BAD_CHECKSUM);
-#endif
- }
-
- return (AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_tb_checksum
- *
- * PARAMETERS: buffer - Pointer to memory region to be checked
- * length - Length of this memory region
- *
- * RETURN: Checksum (u8)
- *
- * DESCRIPTION: Calculates circular checksum of memory region.
- *
- ******************************************************************************/
-
-u8 acpi_tb_checksum(u8 *buffer, u32 length)
-{
- u8 sum = 0;
- u8 *end = buffer + length;
-
- while (buffer < end) {
- sum = (u8) (sum + *(buffer++));
- }
-
- return (sum);
-}
-
/*******************************************************************************
*
* FUNCTION: acpi_tb_check_dsdt_header
/* Local prototypes */
static acpi_status acpi_tb_load_namespace(void);
-static int no_auto_ssdt;
-
/*******************************************************************************
*
* FUNCTION: acpi_load_tables
continue;
}
- if (no_auto_ssdt) {
- printk(KERN_WARNING "ACPI: SSDT ignored due to \"acpi_no_auto_ssdt\"\n");
+ /*
+ * Optionally do not load any SSDTs from the RSDT/XSDT. This can
+ * be useful for debugging ACPI problems on some machines.
+ */
+ if (acpi_gbl_disable_ssdt_table_load) {
+ ACPI_INFO((AE_INFO, "Ignoring %4.4s at %p",
+ acpi_gbl_root_table_list.tables[i].signature.
+ ascii, ACPI_CAST_PTR(void,
+ acpi_gbl_root_table_list.
+ tables[i].address)));
continue;
}
}
ACPI_EXPORT_SYMBOL(acpi_unload_parent_table)
-
-static int __init acpi_no_auto_ssdt_setup(char *s) {
-
- printk(KERN_NOTICE "ACPI: SSDT auto-load disabled\n");
-
- no_auto_ssdt = 1;
-
- return 1;
-}
-
-__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: utbuffer - Buffer dump routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("utbuffer")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_dump_buffer
+ *
+ * PARAMETERS: buffer - Buffer to dump
+ * count - Amount to dump, in bytes
+ * display - BYTE, WORD, DWORD, or QWORD display:
+ * DB_BYTE_DISPLAY
+ * DB_WORD_DISPLAY
+ * DB_DWORD_DISPLAY
+ * DB_QWORD_DISPLAY
+ * base_offset - Beginning buffer offset (display only)
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ******************************************************************************/
+void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
+{
+ u32 i = 0;
+ u32 j;
+ u32 temp32;
+ u8 buf_char;
+
+ if (!buffer) {
+ acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
+ return;
+ }
+
+ if ((count < 4) || (count & 0x01)) {
+ display = DB_BYTE_DISPLAY;
+ }
+
+ /* Nasty little dump buffer routine! */
+
+ while (i < count) {
+
+ /* Print current offset */
+
+ acpi_os_printf("%6.4X: ", (base_offset + i));
+
+ /* Print 16 hex chars */
+
+ for (j = 0; j < 16;) {
+ if (i + j >= count) {
+
+ /* Dump fill spaces */
+
+ acpi_os_printf("%*s", ((display * 2) + 1), " ");
+ j += display;
+ continue;
+ }
+
+ switch (display) {
+ case DB_BYTE_DISPLAY:
+ default: /* Default is BYTE display */
+
+ acpi_os_printf("%02X ",
+ buffer[(acpi_size) i + j]);
+ break;
+
+ case DB_WORD_DISPLAY:
+
+ ACPI_MOVE_16_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%04X ", temp32);
+ break;
+
+ case DB_DWORD_DISPLAY:
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%08X ", temp32);
+ break;
+
+ case DB_QWORD_DISPLAY:
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j]);
+ acpi_os_printf("%08X", temp32);
+
+ ACPI_MOVE_32_TO_32(&temp32,
+ &buffer[(acpi_size) i + j +
+ 4]);
+ acpi_os_printf("%08X ", temp32);
+ break;
+ }
+
+ j += display;
+ }
+
+ /*
+ * Print the ASCII equivalent characters but watch out for the bad
+ * unprintable ones (printable chars are 0x20 through 0x7E)
+ */
+ acpi_os_printf(" ");
+ for (j = 0; j < 16; j++) {
+ if (i + j >= count) {
+ acpi_os_printf("\n");
+ return;
+ }
+
+ buf_char = buffer[(acpi_size) i + j];
+ if (ACPI_IS_PRINT(buf_char)) {
+ acpi_os_printf("%c", buf_char);
+ } else {
+ acpi_os_printf(".");
+ }
+ }
+
+ /* Done with that line. */
+
+ acpi_os_printf("\n");
+ i += 16;
+ }
+
+ return;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_debug_dump_buffer
+ *
+ * PARAMETERS: buffer - Buffer to dump
+ * count - Amount to dump, in bytes
+ * display - BYTE, WORD, DWORD, or QWORD display:
+ * DB_BYTE_DISPLAY
+ * DB_WORD_DISPLAY
+ * DB_DWORD_DISPLAY
+ * DB_QWORD_DISPLAY
+ * component_ID - Caller's component ID
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Generic dump buffer in both hex and ascii.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
+{
+
+ /* Only dump the buffer if tracing is enabled */
+
+ if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
+ (component_id & acpi_dbg_layer))) {
+ return;
+ }
+
+ acpi_ut_dump_buffer(buffer, count, display, 0);
+}
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
-
/*
* For namepath, return the object handle ("reference")
* We are referring to the namespace node
switch (object_type) {
case ACPI_COPY_TYPE_SIMPLE:
-
/*
* This is a simple or null object
*/
break;
case ACPI_COPY_TYPE_PACKAGE:
-
/*
* Build the package object
*/
break;
default:
+
return (AE_BAD_PARAMETER);
}
return_ACPI_STATUS(AE_OK);
default:
+
/* All other types are not supported */
ACPI_ERROR((AE_INFO,
break;
default:
+
/* Other types can't get here */
+
break;
}
break;
default:
+
/* Nothing to do for other simple objects */
+
break;
}
break;
case ACPI_COPY_TYPE_PACKAGE:
-
/*
* This object is a package - go down another nesting level
* Create and build the package object
break;
default:
+
return (AE_BAD_PARAMETER);
}
/******************************************************************************
*
- * Module Name: utdebug - Debug print routines
+ * Module Name: utdebug - Debug print/trace routines
*
*****************************************************************************/
}
#endif
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_dump_buffer
- *
- * PARAMETERS: buffer - Buffer to dump
- * count - Amount to dump, in bytes
- * display - BYTE, WORD, DWORD, or QWORD display
- * offset - Beginning buffer offset (display only)
- *
- * RETURN: None
- *
- * DESCRIPTION: Generic dump buffer in both hex and ascii.
- *
- ******************************************************************************/
-
-void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
-{
- u32 i = 0;
- u32 j;
- u32 temp32;
- u8 buf_char;
-
- if (!buffer) {
- acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
- return;
- }
-
- if ((count < 4) || (count & 0x01)) {
- display = DB_BYTE_DISPLAY;
- }
-
- /* Nasty little dump buffer routine! */
-
- while (i < count) {
-
- /* Print current offset */
-
- acpi_os_printf("%6.4X: ", (base_offset + i));
-
- /* Print 16 hex chars */
-
- for (j = 0; j < 16;) {
- if (i + j >= count) {
-
- /* Dump fill spaces */
-
- acpi_os_printf("%*s", ((display * 2) + 1), " ");
- j += display;
- continue;
- }
-
- switch (display) {
- case DB_BYTE_DISPLAY:
- default: /* Default is BYTE display */
-
- acpi_os_printf("%02X ",
- buffer[(acpi_size) i + j]);
- break;
-
- case DB_WORD_DISPLAY:
-
- ACPI_MOVE_16_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%04X ", temp32);
- break;
-
- case DB_DWORD_DISPLAY:
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%08X ", temp32);
- break;
-
- case DB_QWORD_DISPLAY:
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j]);
- acpi_os_printf("%08X", temp32);
-
- ACPI_MOVE_32_TO_32(&temp32,
- &buffer[(acpi_size) i + j +
- 4]);
- acpi_os_printf("%08X ", temp32);
- break;
- }
-
- j += display;
- }
-
- /*
- * Print the ASCII equivalent characters but watch out for the bad
- * unprintable ones (printable chars are 0x20 through 0x7E)
- */
- acpi_os_printf(" ");
- for (j = 0; j < 16; j++) {
- if (i + j >= count) {
- acpi_os_printf("\n");
- return;
- }
-
- buf_char = buffer[(acpi_size) i + j];
- if (ACPI_IS_PRINT(buf_char)) {
- acpi_os_printf("%c", buf_char);
- } else {
- acpi_os_printf(".");
- }
- }
-
- /* Done with that line. */
-
- acpi_os_printf("\n");
- i += 16;
- }
-
- return;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_debug_dump_buffer
- *
- * PARAMETERS: buffer - Buffer to dump
- * count - Amount to dump, in bytes
- * display - BYTE, WORD, DWORD, or QWORD display
- * component_ID - Caller's component ID
- *
- * RETURN: None
- *
- * DESCRIPTION: Generic dump buffer in both hex and ascii.
- *
- ******************************************************************************/
-
-void
-acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
-{
-
- /* Only dump the buffer if tracing is enabled */
-
- if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
- (component_id & acpi_dbg_layer))) {
- return;
- }
-
- acpi_ut_dump_buffer(buffer, count, display, 0);
-}
break;
default:
+
break;
}
case ACPI_TYPE_PROCESSOR:
case ACPI_TYPE_POWER:
case ACPI_TYPE_THERMAL:
-
/*
* Update the notify objects for these types (if present)
* Two lists, system and device notify handlers.
case ACPI_TYPE_REGION:
default:
+
break; /* No subobjects for all other types */
}
--- /dev/null
+/*******************************************************************************
+ *
+ * Module Name: uterror - Various internal error/warning output functions
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2013, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+#include "acnamesp.h"
+
+#define _COMPONENT ACPI_UTILITIES
+ACPI_MODULE_NAME("uterror")
+
+/*
+ * This module contains internal error functions that may
+ * be configured out.
+ */
+#if !defined (ACPI_NO_ERROR_MESSAGES)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_warning
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Warnings for the predefined validation module. Messages are
+ * only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of error
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_warning(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_WARNING "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_info
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Info messages for the predefined validation module. Messages
+ * are only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_info(const char *module_name,
+ u32 line_number,
+ char *pathname, u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_INFO "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_predefined_bios_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * pathname - Full pathname to the node
+ * node_flags - From Namespace node for the method/object
+ * format - Printf format string + additional args
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: BIOS error message for predefined names. Messages
+ * are only emitted the first time a problem with a particular
+ * method/object is detected. This prevents a flood of
+ * messages for methods that are repeatedly evaluated.
+ *
+ ******************************************************************************/
+
+void ACPI_INTERNAL_VAR_XFACE
+acpi_ut_predefined_bios_error(const char *module_name,
+ u32 line_number,
+ char *pathname,
+ u8 node_flags, const char *format, ...)
+{
+ va_list arg_list;
+
+ /*
+ * Warning messages for this method/object will be disabled after the
+ * first time a validation fails or an object is successfully repaired.
+ */
+ if (node_flags & ANOBJ_EVALUATED) {
+ return;
+ }
+
+ acpi_os_printf(ACPI_MSG_BIOS_ERROR "%s: ", pathname);
+
+ va_start(arg_list, format);
+ acpi_os_vprintf(format, arg_list);
+ ACPI_MSG_SUFFIX;
+ va_end(arg_list);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_namespace_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * internal_name - Name or path of the namespace node
+ * lookup_status - Exception code from NS lookup
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print error message with the full pathname for the NS node.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_namespace_error(const char *module_name,
+ u32 line_number,
+ const char *internal_name, acpi_status lookup_status)
+{
+ acpi_status status;
+ u32 bad_name;
+ char *name = NULL;
+
+ ACPI_MSG_REDIRECT_BEGIN;
+ acpi_os_printf(ACPI_MSG_ERROR);
+
+ if (lookup_status == AE_BAD_CHARACTER) {
+
+ /* There is a non-ascii character in the name */
+
+ ACPI_MOVE_32_TO_32(&bad_name,
+ ACPI_CAST_PTR(u32, internal_name));
+ acpi_os_printf("[0x%.8X] (NON-ASCII)", bad_name);
+ } else {
+ /* Convert path to external format */
+
+ status = acpi_ns_externalize_name(ACPI_UINT32_MAX,
+ internal_name, NULL, &name);
+
+ /* Print target name */
+
+ if (ACPI_SUCCESS(status)) {
+ acpi_os_printf("[%s]", name);
+ } else {
+ acpi_os_printf("[COULD NOT EXTERNALIZE NAME]");
+ }
+
+ if (name) {
+ ACPI_FREE(name);
+ }
+ }
+
+ acpi_os_printf(" Namespace lookup failure, %s",
+ acpi_format_exception(lookup_status));
+
+ ACPI_MSG_SUFFIX;
+ ACPI_MSG_REDIRECT_END;
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_method_error
+ *
+ * PARAMETERS: module_name - Caller's module name (for error output)
+ * line_number - Caller's line number (for error output)
+ * message - Error message to use on failure
+ * prefix_node - Prefix relative to the path
+ * path - Path to the node (optional)
+ * method_status - Execution status
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Print error message with the full pathname for the method.
+ *
+ ******************************************************************************/
+
+void
+acpi_ut_method_error(const char *module_name,
+ u32 line_number,
+ const char *message,
+ struct acpi_namespace_node *prefix_node,
+ const char *path, acpi_status method_status)
+{
+ acpi_status status;
+ struct acpi_namespace_node *node = prefix_node;
+
+ ACPI_MSG_REDIRECT_BEGIN;
+ acpi_os_printf(ACPI_MSG_ERROR);
+
+ if (path) {
+ status =
+ acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
+ &node);
+ if (ACPI_FAILURE(status)) {
+ acpi_os_printf("[Could not get node by pathname]");
+ }
+ }
+
+ acpi_ns_print_node_pathname(node, message);
+ acpi_os_printf(", %s", acpi_format_exception(method_status));
+
+ ACPI_MSG_SUFFIX;
+ ACPI_MSG_REDIRECT_END;
+}
+
+#endif /* ACPI_NO_ERROR_MESSAGES */
******************************************************************************/
acpi_status
-acpi_ut_evaluate_object(struct acpi_namespace_node * prefix_node,
+acpi_ut_evaluate_object(struct acpi_namespace_node *prefix_node,
char *path,
u32 expected_return_btypes,
union acpi_operand_object **return_desc)
}
info->prefix_node = prefix_node;
- info->pathname = path;
+ info->relative_pathname = path;
/* Evaluate the object/method */
switch ((info->return_object)->common.type) {
case ACPI_TYPE_INTEGER:
+
return_btype = ACPI_BTYPE_INTEGER;
break;
case ACPI_TYPE_BUFFER:
+
return_btype = ACPI_BTYPE_BUFFER;
break;
case ACPI_TYPE_STRING:
+
return_btype = ACPI_BTYPE_STRING;
break;
case ACPI_TYPE_PACKAGE:
+
return_btype = ACPI_BTYPE_PACKAGE;
break;
default:
+
return_btype = 0;
break;
}
break;
default:
+
break;
}
switch (cid_objects[i]->common.type) {
case ACPI_TYPE_INTEGER:
+
string_area_size += ACPI_EISAID_STRING_SIZE;
break;
case ACPI_TYPE_STRING:
+
string_area_size += cid_objects[i]->string.length + 1;
break;
default:
+
status = AE_TYPE;
goto cleanup;
}
switch (type) {
case ACPI_TYPE_METHOD:
+
acpi_os_printf("Executing ");
break;
default:
+
acpi_os_printf("Initializing ");
break;
}
break;
default:
+
/* All others have no secondary object */
break;
}
return (TRUE);
default:
+
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
"%p is not not an ACPI operand obj [%s]\n",
object, acpi_ut_get_descriptor_name(object)));
switch (internal_object->reference.class) {
case ACPI_REFCLASS_NAME:
-
/*
* Get the actual length of the full pathname to this object.
* The reference will be converted to the pathname to the object
break;
default:
-
/*
* No other reference opcodes are supported.
* Notably, Locals and Args are not supported, but this may be
switch (object_type) {
case ACPI_COPY_TYPE_SIMPLE:
-
/*
* Simple object - just get the size (Null object/entry is handled
* here also) and sum it into the running package length
u32 i;
u32 j;
+ if (!expected_btypes) {
+ ACPI_STRCPY(buffer, "NONE");
+ return;
+ }
+
j = 1;
buffer[0] = 0;
this_rtype = ACPI_RTYPE_INTEGER;
/* First field in the types list is the count of args to follow */
- arg_count = (argument_types & METHOD_ARG_MASK);
- argument_types >>= METHOD_ARG_BIT_WIDTH;
-
+ arg_count = METHOD_GET_ARG_COUNT(argument_types);
if (arg_count > METHOD_PREDEF_ARGS_MAX) {
printf("**** Invalid argument count (%u) "
"in predefined info structure\n", arg_count);
/* Get each argument from the list, convert to ascii, store to buffer */
for (i = 0; i < arg_count; i++) {
- this_argument_type = (argument_types & METHOD_ARG_MASK);
+ this_argument_type = METHOD_GET_NEXT_TYPE(argument_types);
+
if (!this_argument_type
|| (this_argument_type > METHOD_MAX_ARG_TYPE)) {
printf("**** Invalid argument type (%u) "
strcat(buffer,
ut_external_type_names[this_argument_type] + sub_index);
-
- /* Shift to next argument type field */
-
- argument_types >>= METHOD_ARG_BIT_WIDTH;
sub_index = 0;
}
switch (base) {
case ACPI_ANY_BASE:
case 16:
+
break;
default:
+
/* Invalid Base */
+
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
switch (string[i]) {
case 0x07:
+
acpi_os_printf("\\a"); /* BELL */
break;
case 0x08:
+
acpi_os_printf("\\b"); /* BACKSPACE */
break;
case 0x0C:
+
acpi_os_printf("\\f"); /* FORMFEED */
break;
case 0x0A:
+
acpi_os_printf("\\n"); /* LINEFEED */
break;
case 0x0D:
+
acpi_os_printf("\\r"); /* CARRIAGE RETURN */
break;
case 0x09:
+
acpi_os_printf("\\t"); /* HORIZONTAL TAB */
break;
case 0x0B:
+
acpi_os_printf("\\v"); /* VERTICAL TAB */
break;
case '\'': /* Single Quote */
case '\"': /* Double Quote */
case '\\': /* Backslash */
+
acpi_os_printf("\\%c", (int)string[i]);
break;
*
* FUNCTION: acpi_ut_valid_acpi_name
*
- * PARAMETERS: name - The name to be examined
+ * PARAMETERS: name - The name to be examined. Does not have to
+ * be NULL terminated string.
*
* RETURN: TRUE if the name is valid, FALSE otherwise
*
*
******************************************************************************/
-u8 acpi_ut_valid_acpi_name(u32 name)
+u8 acpi_ut_valid_acpi_name(char *name)
{
u32 i;
ACPI_FUNCTION_ENTRY();
for (i = 0; i < ACPI_NAME_SIZE; i++) {
- if (!acpi_ut_valid_acpi_char
- ((ACPI_CAST_PTR(char, &name))[i], i)) {
+ if (!acpi_ut_valid_acpi_char(name[i], i)) {
return (FALSE);
}
}
switch (ACPI_GET_DESCRIPTOR_TYPE
(descriptor)) {
case ACPI_DESC_TYPE_OPERAND:
+
if (element->size ==
sizeof(union
acpi_operand_object))
break;
case ACPI_DESC_TYPE_PARSER:
+
if (element->size ==
sizeof(union
acpi_parse_object)) {
break;
case ACPI_DESC_TYPE_NAMED:
+
if (element->size ==
sizeof(struct
acpi_namespace_node))
break;
default:
+
break;
}
switch (descriptor_type) {
case ACPI_DESC_TYPE_OPERAND:
+
acpi_os_printf
("%12.12s RefCount 0x%04X\n",
acpi_ut_get_type_name
break;
case ACPI_DESC_TYPE_PARSER:
+
acpi_os_printf
("AmlOpcode 0x%04hX\n",
descriptor->op.asl.
break;
case ACPI_DESC_TYPE_NAMED:
+
acpi_os_printf("%4.4s\n",
acpi_ut_get_node_name
(&descriptor->
break;
default:
+
acpi_os_printf("\n");
break;
}
#include <linux/export.h>
#include <acpi/acpi.h>
#include "accommon.h"
-#include "acnamesp.h"
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME("utxferror")
/*
* This module is used for the in-kernel ACPICA as well as the ACPICA
* tools/applications.
- *
- * For the iASL compiler case, the output is redirected to stderr so that
- * any of the various ACPI errors and warnings do not appear in the output
- * files, for either the compiler or disassembler portions of the tool.
*/
-#ifdef ACPI_ASL_COMPILER
-#include <stdio.h>
-extern FILE *acpi_gbl_output_file;
-
-#define ACPI_MSG_REDIRECT_BEGIN \
- FILE *output_file = acpi_gbl_output_file; \
- acpi_os_redirect_output (stderr);
-
-#define ACPI_MSG_REDIRECT_END \
- acpi_os_redirect_output (output_file);
-
-#else
-/*
- * non-iASL case - no redirection, nothing to do
- */
-#define ACPI_MSG_REDIRECT_BEGIN
-#define ACPI_MSG_REDIRECT_END
-#endif
-/*
- * Common message prefixes
- */
-#define ACPI_MSG_ERROR "ACPI Error: "
-#define ACPI_MSG_EXCEPTION "ACPI Exception: "
-#define ACPI_MSG_WARNING "ACPI Warning: "
-#define ACPI_MSG_INFO "ACPI: "
-#define ACPI_MSG_BIOS_ERROR "ACPI BIOS Bug: Error: "
-#define ACPI_MSG_BIOS_WARNING "ACPI BIOS Bug: Warning: "
-/*
- * Common message suffix
- */
-#define ACPI_MSG_SUFFIX \
- acpi_os_printf (" (%8.8X/%s-%u)\n", ACPI_CA_VERSION, module_name, line_number)
/*******************************************************************************
*
* FUNCTION: acpi_error
}
ACPI_EXPORT_SYMBOL(acpi_bios_warning)
-
-/*
- * The remainder of this module contains internal error functions that may
- * be configured out.
- */
-#if !defined (ACPI_NO_ERROR_MESSAGES) && !defined (ACPI_BIN_APP)
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_predefined_warning
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * pathname - Full pathname to the node
- * node_flags - From Namespace node for the method/object
- * format - Printf format string + additional args
- *
- * RETURN: None
- *
- * DESCRIPTION: Warnings for the predefined validation module. Messages are
- * only emitted the first time a problem with a particular
- * method/object is detected. This prevents a flood of error
- * messages for methods that are repeatedly evaluated.
- *
- ******************************************************************************/
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_predefined_warning(const char *module_name,
- u32 line_number,
- char *pathname,
- u8 node_flags, const char *format, ...)
-{
- va_list arg_list;
-
- /*
- * Warning messages for this method/object will be disabled after the
- * first time a validation fails or an object is successfully repaired.
- */
- if (node_flags & ANOBJ_EVALUATED) {
- return;
- }
-
- acpi_os_printf(ACPI_MSG_WARNING "For %s: ", pathname);
-
- va_start(arg_list, format);
- acpi_os_vprintf(format, arg_list);
- ACPI_MSG_SUFFIX;
- va_end(arg_list);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_predefined_info
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * pathname - Full pathname to the node
- * node_flags - From Namespace node for the method/object
- * format - Printf format string + additional args
- *
- * RETURN: None
- *
- * DESCRIPTION: Info messages for the predefined validation module. Messages
- * are only emitted the first time a problem with a particular
- * method/object is detected. This prevents a flood of
- * messages for methods that are repeatedly evaluated.
- *
- ******************************************************************************/
-
-void ACPI_INTERNAL_VAR_XFACE
-acpi_ut_predefined_info(const char *module_name,
- u32 line_number,
- char *pathname, u8 node_flags, const char *format, ...)
-{
- va_list arg_list;
-
- /*
- * Warning messages for this method/object will be disabled after the
- * first time a validation fails or an object is successfully repaired.
- */
- if (node_flags & ANOBJ_EVALUATED) {
- return;
- }
-
- acpi_os_printf(ACPI_MSG_INFO "For %s: ", pathname);
-
- va_start(arg_list, format);
- acpi_os_vprintf(format, arg_list);
- ACPI_MSG_SUFFIX;
- va_end(arg_list);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_namespace_error
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * internal_name - Name or path of the namespace node
- * lookup_status - Exception code from NS lookup
- *
- * RETURN: None
- *
- * DESCRIPTION: Print error message with the full pathname for the NS node.
- *
- ******************************************************************************/
-
-void
-acpi_ut_namespace_error(const char *module_name,
- u32 line_number,
- const char *internal_name, acpi_status lookup_status)
-{
- acpi_status status;
- u32 bad_name;
- char *name = NULL;
-
- ACPI_MSG_REDIRECT_BEGIN;
- acpi_os_printf(ACPI_MSG_ERROR);
-
- if (lookup_status == AE_BAD_CHARACTER) {
-
- /* There is a non-ascii character in the name */
-
- ACPI_MOVE_32_TO_32(&bad_name,
- ACPI_CAST_PTR(u32, internal_name));
- acpi_os_printf("[0x%.8X] (NON-ASCII)", bad_name);
- } else {
- /* Convert path to external format */
-
- status = acpi_ns_externalize_name(ACPI_UINT32_MAX,
- internal_name, NULL, &name);
-
- /* Print target name */
-
- if (ACPI_SUCCESS(status)) {
- acpi_os_printf("[%s]", name);
- } else {
- acpi_os_printf("[COULD NOT EXTERNALIZE NAME]");
- }
-
- if (name) {
- ACPI_FREE(name);
- }
- }
-
- acpi_os_printf(" Namespace lookup failure, %s",
- acpi_format_exception(lookup_status));
-
- ACPI_MSG_SUFFIX;
- ACPI_MSG_REDIRECT_END;
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ut_method_error
- *
- * PARAMETERS: module_name - Caller's module name (for error output)
- * line_number - Caller's line number (for error output)
- * message - Error message to use on failure
- * prefix_node - Prefix relative to the path
- * path - Path to the node (optional)
- * method_status - Execution status
- *
- * RETURN: None
- *
- * DESCRIPTION: Print error message with the full pathname for the method.
- *
- ******************************************************************************/
-
-void
-acpi_ut_method_error(const char *module_name,
- u32 line_number,
- const char *message,
- struct acpi_namespace_node *prefix_node,
- const char *path, acpi_status method_status)
-{
- acpi_status status;
- struct acpi_namespace_node *node = prefix_node;
-
- ACPI_MSG_REDIRECT_BEGIN;
- acpi_os_printf(ACPI_MSG_ERROR);
-
- if (path) {
- status =
- acpi_ns_get_node(prefix_node, path, ACPI_NS_NO_UPSEARCH,
- &node);
- if (ACPI_FAILURE(status)) {
- acpi_os_printf("[Could not get node by pathname]");
- }
- }
-
- acpi_ns_print_node_pathname(node, message);
- acpi_os_printf(", %s", acpi_format_exception(method_status));
-
- ACPI_MSG_SUFFIX;
- ACPI_MSG_REDIRECT_END;
-}
-
-#endif /* ACPI_NO_ERROR_MESSAGES */
{
int result = -EFAULT;
acpi_status status = 0;
- char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags)?
+ char *name = test_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags) ?
"_BIX" : "_BIF";
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
static void acpi_battery_quirks(struct acpi_battery *battery)
{
if (test_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags))
- return ;
+ return;
- if (battery->full_charge_capacity == 100 &&
- battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN &&
- battery->capacity_now >=0 && battery->capacity_now <= 100) {
+ if (battery->full_charge_capacity == 100 &&
+ battery->rate_now == ACPI_BATTERY_VALUE_UNKNOWN &&
+ battery->capacity_now >= 0 && battery->capacity_now <= 100) {
set_bit(ACPI_BATTERY_QUIRK_PERCENTAGE_CAPACITY, &battery->flags);
battery->full_charge_capacity = battery->design_capacity;
battery->capacity_now = (battery->capacity_now *
}
if (test_bit(ACPI_BATTERY_QUIRK_THINKPAD_MAH, &battery->flags))
- return ;
+ return;
if (battery->power_unit && dmi_name_in_vendors("LENOVO")) {
const char *s;
goto end;
seq_printf(seq, "present: %s\n",
- acpi_battery_present(battery)?"yes":"no");
+ acpi_battery_present(battery) ? "yes" : "no");
if (!acpi_battery_present(battery))
goto end;
if (battery->design_capacity == ACPI_BATTERY_VALUE_UNKNOWN)
goto end;
seq_printf(seq, "present: %s\n",
- acpi_battery_present(battery)?"yes":"no");
+ acpi_battery_present(battery) ? "yes" : "no");
if (!acpi_battery_present(battery))
goto end;
seq_printf(seq, "capacity state: %s\n",
- (battery->state & 0x04)?"critical":"ok");
+ (battery->state & 0x04) ? "critical" : "ok");
if ((battery->state & 0x01) && (battery->state & 0x02))
seq_printf(seq,
"charging state: charging/discharging\n");
int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
{
- acpi_status status = AE_OK;
-
+ acpi_status status;
if (!device)
return -EINVAL;
int acpi_bus_get_private_data(acpi_handle handle, void **data)
{
- acpi_status status = AE_OK;
+ acpi_status status;
if (!*data)
return -EINVAL;
int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, u8 type, int data)
{
struct acpi_bus_event *event;
- unsigned long flags = 0;
+ unsigned long flags;
/* drop event on the floor if no one's listening */
if (!event_is_open)
int acpi_bus_receive_event(struct acpi_bus_event *event)
{
- unsigned long flags = 0;
+ unsigned long flags;
struct acpi_bus_event *entry = NULL;
DECLARE_WAITQUEUE(wait, current);
static int __init acpi_bus_init_irq(void)
{
- acpi_status status = AE_OK;
+ acpi_status status;
union acpi_object arg = { ACPI_TYPE_INTEGER };
struct acpi_object_list arg_list = { 1, &arg };
char *message = NULL;
void __init acpi_early_init(void)
{
- acpi_status status = AE_OK;
+ acpi_status status;
if (acpi_disabled)
return;
static int __init acpi_bus_init(void)
{
- int result = 0;
- acpi_status status = AE_OK;
+ int result;
+ acpi_status status;
extern acpi_status acpi_os_initialize1(void);
acpi_os_initialize1();
EXPORT_SYMBOL(acpi_bus_can_wakeup);
/**
- * acpi_device_power_state - Get preferred power state of ACPI device.
+ * acpi_dev_pm_get_state - Get preferred power state of ACPI device.
* @dev: Device whose preferred target power state to return.
* @adev: ACPI device node corresponding to @dev.
* @target_state: System state to match the resultant device state.
- * @d_max_in: Deepest low-power state to take into consideration.
- * @d_min_p: Location to store the upper limit of the allowed states range.
- * Return value: Preferred power state of the device on success, -ENODEV
- * (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
+ * @d_min_p: Location to store the highest power state available to the device.
+ * @d_max_p: Location to store the lowest power state available to the device.
*
- * Find the lowest power (highest number) ACPI device power state that the
- * device can be in while the system is in the state represented by
- * @target_state. If @d_min_p is set, the highest power (lowest number) device
- * power state that @dev can be in for the given system sleep state is stored
- * at the location pointed to by it.
+ * Find the lowest power (highest number) and highest power (lowest number) ACPI
+ * device power states that the device can be in while the system is in the
+ * state represented by @target_state. Store the integer numbers representing
+ * those stats in the memory locations pointed to by @d_max_p and @d_min_p,
+ * respectively.
*
* Callers must ensure that @dev and @adev are valid pointers and that @adev
* actually corresponds to @dev before using this function.
+ *
+ * Returns 0 on success or -ENODATA when one of the ACPI methods fails or
+ * returns a value that doesn't make sense. The memory locations pointed to by
+ * @d_max_p and @d_min_p are only modified on success.
*/
-int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
- u32 target_state, int d_max_in, int *d_min_p)
+static int acpi_dev_pm_get_state(struct device *dev, struct acpi_device *adev,
+ u32 target_state, int *d_min_p, int *d_max_p)
{
- char acpi_method[] = "_SxD";
- unsigned long long d_min, d_max;
+ char method[] = { '_', 'S', '0' + target_state, 'D', '\0' };
+ acpi_handle handle = adev->handle;
+ unsigned long long ret;
+ int d_min, d_max;
bool wakeup = false;
+ acpi_status status;
- if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3)
- return -EINVAL;
-
- if (d_max_in > ACPI_STATE_D3_HOT) {
- enum pm_qos_flags_status stat;
-
- stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
- if (stat == PM_QOS_FLAGS_ALL)
- d_max_in = ACPI_STATE_D3_HOT;
- }
-
- acpi_method[2] = '0' + target_state;
/*
- * If the sleep state is S0, the lowest limit from ACPI is D3,
- * but if the device has _S0W, we will use the value from _S0W
- * as the lowest limit from ACPI. Finally, we will constrain
- * the lowest limit with the specified one.
+ * If the system state is S0, the lowest power state the device can be
+ * in is D3cold, unless the device has _S0W and is supposed to signal
+ * wakeup, in which case the return value of _S0W has to be used as the
+ * lowest power state available to the device.
*/
d_min = ACPI_STATE_D0;
- d_max = ACPI_STATE_D3;
+ d_max = ACPI_STATE_D3_COLD;
/*
* If present, _SxD methods return the minimum D-state (highest power
* state) we can use for the corresponding S-states. Otherwise, the
* minimum D-state is D0 (ACPI 3.x).
- *
- * NOTE: We rely on acpi_evaluate_integer() not clobbering the integer
- * provided -- that's our fault recovery, we ignore retval.
*/
if (target_state > ACPI_STATE_S0) {
- acpi_evaluate_integer(adev->handle, acpi_method, NULL, &d_min);
+ /*
+ * We rely on acpi_evaluate_integer() not clobbering the integer
+ * provided if AE_NOT_FOUND is returned.
+ */
+ ret = d_min;
+ status = acpi_evaluate_integer(handle, method, NULL, &ret);
+ if ((ACPI_FAILURE(status) && status != AE_NOT_FOUND)
+ || ret > ACPI_STATE_D3_COLD)
+ return -ENODATA;
+
+ /*
+ * We need to handle legacy systems where D3hot and D3cold are
+ * the same and 3 is returned in both cases, so fall back to
+ * D3cold if D3hot is not a valid state.
+ */
+ if (!adev->power.states[ret].flags.valid) {
+ if (ret == ACPI_STATE_D3_HOT)
+ ret = ACPI_STATE_D3_COLD;
+ else
+ return -ENODATA;
+ }
+ d_min = ret;
wakeup = device_may_wakeup(dev) && adev->wakeup.flags.valid
&& adev->wakeup.sleep_state >= target_state;
} else if (dev_pm_qos_flags(dev, PM_QOS_FLAG_REMOTE_WAKEUP) !=
* can wake the system. _S0W may be valid, too.
*/
if (wakeup) {
- acpi_status status;
-
- acpi_method[3] = 'W';
- status = acpi_evaluate_integer(adev->handle, acpi_method, NULL,
- &d_max);
- if (ACPI_FAILURE(status)) {
- if (target_state != ACPI_STATE_S0 ||
- status != AE_NOT_FOUND)
+ method[3] = 'W';
+ status = acpi_evaluate_integer(handle, method, NULL, &ret);
+ if (status == AE_NOT_FOUND) {
+ if (target_state > ACPI_STATE_S0)
d_max = d_min;
- } else if (d_max < d_min) {
- /* Warn the user of the broken DSDT */
- printk(KERN_WARNING "ACPI: Wrong value from %s\n",
- acpi_method);
- /* Sanitize it */
- d_min = d_max;
+ } else if (ACPI_SUCCESS(status) && ret <= ACPI_STATE_D3_COLD) {
+ /* Fall back to D3cold if ret is not a valid state. */
+ if (!adev->power.states[ret].flags.valid)
+ ret = ACPI_STATE_D3_COLD;
+
+ d_max = ret > d_min ? ret : d_min;
+ } else {
+ return -ENODATA;
}
}
- if (d_max_in < d_min)
- return -EINVAL;
if (d_min_p)
*d_min_p = d_min;
- /* constrain d_max with specified lowest limit (max number) */
- if (d_max > d_max_in) {
- for (d_max = d_max_in; d_max > d_min; d_max--) {
- if (adev->power.states[d_max].flags.valid)
- break;
- }
- }
- return d_max;
+
+ if (d_max_p)
+ *d_max_p = d_max;
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(acpi_device_power_state);
/**
* acpi_pm_device_sleep_state - Get preferred power state of ACPI device.
* @d_min_p: Location to store the upper limit of the allowed states range.
* @d_max_in: Deepest low-power state to take into consideration.
* Return value: Preferred power state of the device on success, -ENODEV
- * (if there's no 'struct acpi_device' for @dev) or -EINVAL on failure
+ * if there's no 'struct acpi_device' for @dev, -EINVAL if @d_max_in is
+ * incorrect, or -ENODATA on ACPI method failure.
*
* The caller must ensure that @dev is valid before using this function.
*/
{
acpi_handle handle = DEVICE_ACPI_HANDLE(dev);
struct acpi_device *adev;
+ int ret, d_max;
+
+ if (d_max_in < ACPI_STATE_D0 || d_max_in > ACPI_STATE_D3_COLD)
+ return -EINVAL;
+
+ if (d_max_in > ACPI_STATE_D3_HOT) {
+ enum pm_qos_flags_status stat;
+
+ stat = dev_pm_qos_flags(dev, PM_QOS_FLAG_NO_POWER_OFF);
+ if (stat == PM_QOS_FLAGS_ALL)
+ d_max_in = ACPI_STATE_D3_HOT;
+ }
if (!handle || acpi_bus_get_device(handle, &adev)) {
dev_dbg(dev, "ACPI handle without context in %s!\n", __func__);
return -ENODEV;
}
- return acpi_device_power_state(dev, adev, acpi_target_system_state(),
- d_max_in, d_min_p);
+ ret = acpi_dev_pm_get_state(dev, adev, acpi_target_system_state(),
+ d_min_p, &d_max);
+ if (ret)
+ return ret;
+
+ if (d_max_in < *d_min_p)
+ return -EINVAL;
+
+ if (d_max > d_max_in) {
+ for (d_max = d_max_in; d_max > *d_min_p; d_max--) {
+ if (adev->power.states[d_max].flags.valid)
+ break;
+ }
+ }
+ return d_max;
}
EXPORT_SYMBOL(acpi_pm_device_sleep_state);
static int acpi_dev_pm_low_power(struct device *dev, struct acpi_device *adev,
u32 system_state)
{
- int power_state;
+ int ret, state;
if (!acpi_device_power_manageable(adev))
return 0;
- power_state = acpi_device_power_state(dev, adev, system_state,
- ACPI_STATE_D3, NULL);
- if (power_state < ACPI_STATE_D0 || power_state > ACPI_STATE_D3)
- return -EIO;
-
- return acpi_device_set_power(adev, power_state);
+ ret = acpi_dev_pm_get_state(dev, adev, system_state, NULL, &state);
+ return ret ? ret : acpi_device_set_power(adev, state);
}
/**
spinlock_t dd_lock;
struct mutex hp_lock;
struct list_head dependent_devices;
- struct list_head hotplug_devices;
struct list_head sibling;
struct platform_device *dock_device;
};
static LIST_HEAD(dock_stations);
static int dock_station_count;
+static DEFINE_MUTEX(hotplug_lock);
struct dock_dependent_device {
struct list_head list;
- struct list_head hotplug_list;
acpi_handle handle;
- const struct acpi_dock_ops *ops;
- void *context;
+ const struct acpi_dock_ops *hp_ops;
+ void *hp_context;
+ unsigned int hp_refcount;
+ void (*hp_release)(void *);
};
#define DOCK_DOCKING 0x00000001
dd->handle = handle;
INIT_LIST_HEAD(&dd->list);
- INIT_LIST_HEAD(&dd->hotplug_list);
spin_lock(&ds->dd_lock);
list_add_tail(&dd->list, &ds->dependent_devices);
}
/**
- * dock_add_hotplug_device - associate a hotplug handler with the dock station
- * @ds: The dock station
- * @dd: The dependent device struct
- *
- * Add the dependent device to the dock's hotplug device list
+ * dock_init_hotplug - Initialize a hotplug device on a docking station.
+ * @dd: Dock-dependent device.
+ * @ops: Dock operations to attach to the dependent device.
+ * @context: Data to pass to the @ops callbacks and @release.
+ * @init: Optional initialization routine to run after setting up context.
+ * @release: Optional release routine to run on removal.
*/
-static void
-dock_add_hotplug_device(struct dock_station *ds,
- struct dock_dependent_device *dd)
+static int dock_init_hotplug(struct dock_dependent_device *dd,
+ const struct acpi_dock_ops *ops, void *context,
+ void (*init)(void *), void (*release)(void *))
{
- mutex_lock(&ds->hp_lock);
- list_add_tail(&dd->hotplug_list, &ds->hotplug_devices);
- mutex_unlock(&ds->hp_lock);
+ int ret = 0;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context) {
+ ret = -EEXIST;
+ } else {
+ dd->hp_refcount = 1;
+ dd->hp_ops = ops;
+ dd->hp_context = context;
+ dd->hp_release = release;
+ }
+
+ if (!WARN_ON(ret) && init)
+ init(context);
+
+ mutex_unlock(&hotplug_lock);
+ return ret;
}
/**
- * dock_del_hotplug_device - remove a hotplug handler from the dock station
- * @ds: The dock station
- * @dd: the dependent device struct
+ * dock_release_hotplug - Decrement hotplug reference counter of dock device.
+ * @dd: Dock-dependent device.
*
- * Delete the dependent device from the dock's hotplug device list
+ * Decrement the reference counter of @dd and if 0, detach its hotplug
+ * operations from it, reset its context pointer and run the optional release
+ * routine if present.
*/
-static void
-dock_del_hotplug_device(struct dock_station *ds,
- struct dock_dependent_device *dd)
+static void dock_release_hotplug(struct dock_dependent_device *dd)
{
- mutex_lock(&ds->hp_lock);
- list_del(&dd->hotplug_list);
- mutex_unlock(&ds->hp_lock);
+ void (*release)(void *) = NULL;
+ void *context = NULL;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context && !--dd->hp_refcount) {
+ dd->hp_ops = NULL;
+ context = dd->hp_context;
+ dd->hp_context = NULL;
+ release = dd->hp_release;
+ dd->hp_release = NULL;
+ }
+
+ if (release && context)
+ release(context);
+
+ mutex_unlock(&hotplug_lock);
+}
+
+static void dock_hotplug_event(struct dock_dependent_device *dd, u32 event,
+ bool uevent)
+{
+ acpi_notify_handler cb = NULL;
+ bool run = false;
+
+ mutex_lock(&hotplug_lock);
+
+ if (dd->hp_context) {
+ run = true;
+ dd->hp_refcount++;
+ if (dd->hp_ops)
+ cb = uevent ? dd->hp_ops->uevent : dd->hp_ops->handler;
+ }
+
+ mutex_unlock(&hotplug_lock);
+
+ if (!run)
+ return;
+
+ if (cb)
+ cb(dd->handle, event, dd->hp_context);
+
+ dock_release_hotplug(dd);
}
/**
/*
* First call driver specific hotplug functions
*/
- list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
- if (dd->ops && dd->ops->handler)
- dd->ops->handler(dd->handle, event, dd->context);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, event, false);
/*
* Now make sure that an acpi_device is created for each
if (num == DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
- list_for_each_entry(dd, &ds->hotplug_devices, hotplug_list)
- if (dd->ops && dd->ops->uevent)
- dd->ops->uevent(dd->handle, event, dd->context);
+ list_for_each_entry(dd, &ds->dependent_devices, list)
+ dock_hotplug_event(dd, event, true);
if (num != DOCK_EVENT)
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
* @handle: the handle of the device
* @ops: handlers to call after docking
* @context: device specific data
+ * @init: Optional initialization routine to run after registration
+ * @release: Optional release routine to run on unregistration
*
* If a driver would like to perform a hotplug operation after a dock
* event, they can register an acpi_notifiy_handler to be called by
* the dock driver after _DCK is executed.
*/
-int
-register_hotplug_dock_device(acpi_handle handle, const struct acpi_dock_ops *ops,
- void *context)
+int register_hotplug_dock_device(acpi_handle handle,
+ const struct acpi_dock_ops *ops, void *context,
+ void (*init)(void *), void (*release)(void *))
{
struct dock_dependent_device *dd;
struct dock_station *dock_station;
int ret = -EINVAL;
+ if (WARN_ON(!context))
+ return -EINVAL;
+
if (!dock_station_count)
return -ENODEV;
* ops
*/
dd = find_dock_dependent_device(dock_station, handle);
- if (dd) {
- dd->ops = ops;
- dd->context = context;
- dock_add_hotplug_device(dock_station, dd);
+ if (dd && !dock_init_hotplug(dd, ops, context, init, release))
ret = 0;
- }
}
return ret;
list_for_each_entry(dock_station, &dock_stations, sibling) {
dd = find_dock_dependent_device(dock_station, handle);
if (dd)
- dock_del_hotplug_device(dock_station, dd);
+ dock_release_hotplug(dd);
}
}
EXPORT_SYMBOL_GPL(unregister_hotplug_dock_device);
mutex_init(&dock_station->hp_lock);
spin_lock_init(&dock_station->dd_lock);
INIT_LIST_HEAD(&dock_station->sibling);
- INIT_LIST_HEAD(&dock_station->hotplug_devices);
ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list);
INIT_LIST_HEAD(&dock_station->dependent_devices);
return ret;
}
-/**
- * dock_remove - free up resources related to the dock station
- */
-static int dock_remove(struct dock_station *ds)
-{
- struct dock_dependent_device *dd, *tmp;
- struct platform_device *dock_device = ds->dock_device;
-
- if (!dock_station_count)
- return 0;
-
- /* remove dependent devices */
- list_for_each_entry_safe(dd, tmp, &ds->dependent_devices, list)
- kfree(dd);
-
- list_del(&ds->sibling);
-
- /* cleanup sysfs */
- sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);
- platform_device_unregister(dock_device);
-
- return 0;
-}
-
/**
* find_dock_and_bay - look for dock stations and bays
* @handle: acpi handle of a device
return AE_OK;
}
-static int __init dock_init(void)
+int __init acpi_dock_init(void)
{
if (acpi_disabled)
return 0;
ACPI_DOCK_DRIVER_DESCRIPTION, dock_station_count);
return 0;
}
-
-static void __exit dock_exit(void)
-{
- struct dock_station *tmp, *dock_station;
-
- unregister_acpi_bus_notifier(&dock_acpi_notifier);
- list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling)
- dock_remove(dock_station);
-}
-
-/*
- * Must be called before drivers of devices in dock, otherwise we can't know
- * which devices are in a dock
- */
-subsys_initcall(dock_init);
-module_exit(dock_exit);
ec_enlarge_storm_threshold, "CLEVO hardware", {
DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."),
DMI_MATCH(DMI_PRODUCT_NAME, "M720T/M730T"),}, NULL},
+ {
+ ec_skip_dsdt_scan, "HP Folio 13", {
+ DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13"),}, NULL},
{},
};
#include <linux/acpi.h>
#include <linux/debugfs.h>
#include <linux/module.h>
+#include <linux/uaccess.h>
#include "internal.h"
MODULE_AUTHOR("Thomas Renninger <trenn@suse.de>");
* struct acpi_ec *ec = ((struct seq_file *)f->private_data)->private;
*/
unsigned int size = EC_SPACE_SIZE;
- u8 *data = (u8 *) buf;
loff_t init_off = *off;
int err = 0;
size = count;
while (size) {
- err = ec_read(*off, &data[*off - init_off]);
+ u8 byte_read;
+ err = ec_read(*off, &byte_read);
if (err)
return err;
+ if (put_user(byte_read, buf + *off - init_off)) {
+ if (*off - init_off)
+ return *off - init_off; /* partial read */
+ return -EFAULT;
+ }
*off += 1;
size--;
}
unsigned int size = count;
loff_t init_off = *off;
- u8 *data = (u8 *) buf;
int err = 0;
if (*off >= EC_SPACE_SIZE)
}
while (size) {
- u8 byte_write = data[*off - init_off];
+ u8 byte_write;
+ if (get_user(byte_write, buf + *off - init_off)) {
+ if (*off - init_off)
+ return *off - init_off; /* partial write */
+ return -EFAULT;
+ }
err = ec_write(*off, byte_write);
if (err)
return err;
static acpi_status do_acpi_find_child(acpi_handle handle, u32 lvl_not_used,
void *addr_p, void **ret_p)
{
- unsigned long long addr;
+ unsigned long long addr, sta;
acpi_status status;
status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, &addr);
if (ACPI_SUCCESS(status) && addr == *((u64 *)addr_p)) {
*ret_p = handle;
- return AE_CTRL_TERMINATE;
+ status = acpi_bus_get_status_handle(handle, &sta);
+ if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_ENABLED))
+ return AE_CTRL_TERMINATE;
}
return AE_OK;
}
}
EXPORT_SYMBOL(acpi_get_child);
-static int acpi_bind_one(struct device *dev, acpi_handle handle)
+int acpi_bind_one(struct device *dev, acpi_handle handle)
{
struct acpi_device *acpi_dev;
acpi_status status;
kfree(physical_node);
goto err;
}
+EXPORT_SYMBOL_GPL(acpi_bind_one);
-static int acpi_unbind_one(struct device *dev)
+int acpi_unbind_one(struct device *dev)
{
struct acpi_device_physical_node *entry;
struct acpi_device *acpi_dev;
dev_err(dev, "Oops, 'acpi_handle' corrupt\n");
return -EINVAL;
}
+EXPORT_SYMBOL_GPL(acpi_unbind_one);
static int acpi_platform_notify(struct device *dev)
{
void acpi_pci_root_init(void);
void acpi_pci_link_init(void);
void acpi_pci_root_hp_init(void);
+void acpi_processor_init(void);
void acpi_platform_init(void);
int acpi_sysfs_init(void);
#ifdef CONFIG_ACPI_CONTAINER
#else
static inline void acpi_container_init(void) {}
#endif
+#ifdef CONFIG_ACPI_DOCK
+void acpi_dock_init(void);
+#else
+static inline void acpi_dock_init(void) {}
+#endif
#ifdef CONFIG_ACPI_HOTPLUG_MEMORY
void acpi_memory_hotplug_init(void);
#else
static inline void acpi_memory_hotplug_init(void) {}
#endif
+#ifdef CONFIG_X86
+void acpi_cmos_rtc_init(void);
+#else
+static inline void acpi_cmos_rtc_init(void) {}
+#endif
+
+extern bool acpi_force_hot_remove;
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
const char *name);
int type, unsigned long long sta);
void acpi_device_add_finalize(struct acpi_device *device);
void acpi_free_pnp_ids(struct acpi_device_pnp *pnp);
+int acpi_bind_one(struct device *dev, acpi_handle handle);
+int acpi_unbind_one(struct device *dev);
/* --------------------------------------------------------------------------
Power Resource
}
#endif
+static int __init acpi_no_auto_ssdt_setup(char *s)
+{
+ printk(KERN_NOTICE PREFIX "SSDT auto-load disabled\n");
+
+ acpi_gbl_disable_ssdt_table_load = TRUE;
+
+ return 1;
+}
+
+__setup("acpi_no_auto_ssdt", acpi_no_auto_ssdt_setup);
+
acpi_status __init acpi_os_initialize(void)
{
acpi_os_map_generic_address(&acpi_gbl_FADT.xpm1a_event_block);
/*
- * acpi_processor.c - ACPI Processor Driver ($Revision: 71 $)
+ * processor_driver.c - ACPI Processor Driver
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
* - Added processor hotplug support
+ * Copyright (C) 2013, Intel Corporation
+ * Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- * TBD:
- * 1. Make # power states dynamic.
- * 2. Support duty_cycle values that span bit 4.
- * 3. Optimize by having scheduler determine business instead of
- * having us try to calculate it here.
- * 4. Need C1 timing -- must modify kernel (IRQ handler) to get this.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/pm.h>
#include <linux/cpufreq.h>
#include <linux/cpu.h>
-#include <linux/dmi.h>
-#include <linux/moduleparam.h>
#include <linux/cpuidle.h>
#include <linux/slab.h>
#include <linux/acpi.h>
-#include <linux/memory_hotplug.h>
-
-#include <asm/io.h>
-#include <asm/cpu.h>
-#include <asm/delay.h>
-#include <asm/uaccess.h>
-#include <asm/processor.h>
-#include <asm/smp.h>
-#include <asm/acpi.h>
-
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
+
#include <acpi/processor.h>
+#include "internal.h"
+
#define PREFIX "ACPI: "
-#define ACPI_PROCESSOR_CLASS "processor"
-#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
#define ACPI_PROCESSOR_FILE_INFO "info"
#define ACPI_PROCESSOR_FILE_THROTTLING "throttling"
#define ACPI_PROCESSOR_FILE_LIMIT "limit"
#define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80
#define ACPI_PROCESSOR_NOTIFY_POWER 0x81
#define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82
-#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
#define ACPI_PROCESSOR_LIMIT_USER 0
#define ACPI_PROCESSOR_LIMIT_THERMAL 1
MODULE_DESCRIPTION("ACPI Processor Driver");
MODULE_LICENSE("GPL");
-static int acpi_processor_add(struct acpi_device *device);
-static int acpi_processor_remove(struct acpi_device *device);
-static void acpi_processor_notify(struct acpi_device *device, u32 event);
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr);
-static int acpi_processor_handle_eject(struct acpi_processor *pr);
-static int acpi_processor_start(struct acpi_processor *pr);
+static int acpi_processor_start(struct device *dev);
+static int acpi_processor_stop(struct device *dev);
static const struct acpi_device_id processor_device_ids[] = {
{ACPI_PROCESSOR_OBJECT_HID, 0},
};
MODULE_DEVICE_TABLE(acpi, processor_device_ids);
-static struct acpi_driver acpi_processor_driver = {
+static struct device_driver acpi_processor_driver = {
.name = "processor",
- .class = ACPI_PROCESSOR_CLASS,
- .ids = processor_device_ids,
- .ops = {
- .add = acpi_processor_add,
- .remove = acpi_processor_remove,
- .notify = acpi_processor_notify,
- },
+ .bus = &cpu_subsys,
+ .acpi_match_table = processor_device_ids,
+ .probe = acpi_processor_start,
+ .remove = acpi_processor_stop,
};
-#define INSTALL_NOTIFY_HANDLER 1
-#define UNINSTALL_NOTIFY_HANDLER 2
-
-DEFINE_PER_CPU(struct acpi_processor *, processors);
-EXPORT_PER_CPU_SYMBOL(processors);
-
-struct acpi_processor_errata errata __read_mostly;
-
-/* --------------------------------------------------------------------------
- Errata Handling
- -------------------------------------------------------------------------- */
-
-static int acpi_processor_errata_piix4(struct pci_dev *dev)
+static void acpi_processor_notify(acpi_handle handle, u32 event, void *data)
{
- u8 value1 = 0;
- u8 value2 = 0;
-
-
- if (!dev)
- return -EINVAL;
-
- /*
- * Note that 'dev' references the PIIX4 ACPI Controller.
- */
-
- switch (dev->revision) {
- case 0:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
- break;
- case 1:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 B-step\n"));
- break;
- case 2:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4E\n"));
- break;
- case 3:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4M\n"));
- break;
- default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found unknown PIIX4\n"));
- break;
- }
-
- switch (dev->revision) {
-
- case 0: /* PIIX4 A-step */
- case 1: /* PIIX4 B-step */
- /*
- * See specification changes #13 ("Manual Throttle Duty Cycle")
- * and #14 ("Enabling and Disabling Manual Throttle"), plus
- * erratum #5 ("STPCLK# Deassertion Time") from the January
- * 2002 PIIX4 specification update. Applies to only older
- * PIIX4 models.
- */
- errata.piix4.throttle = 1;
-
- case 2: /* PIIX4E */
- case 3: /* PIIX4M */
- /*
- * See erratum #18 ("C3 Power State/BMIDE and Type-F DMA
- * Livelock") from the January 2002 PIIX4 specification update.
- * Applies to all PIIX4 models.
- */
-
- /*
- * BM-IDE
- * ------
- * Find the PIIX4 IDE Controller and get the Bus Master IDE
- * Status register address. We'll use this later to read
- * each IDE controller's DMA status to make sure we catch all
- * DMA activity.
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB,
- PCI_ANY_ID, PCI_ANY_ID, NULL);
- if (dev) {
- errata.piix4.bmisx = pci_resource_start(dev, 4);
- pci_dev_put(dev);
- }
-
- /*
- * Type-F DMA
- * ----------
- * Find the PIIX4 ISA Controller and read the Motherboard
- * DMA controller's status to see if Type-F (Fast) DMA mode
- * is enabled (bit 7) on either channel. Note that we'll
- * disable C3 support if this is enabled, as some legacy
- * devices won't operate well if fast DMA is disabled.
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB_0,
- PCI_ANY_ID, PCI_ANY_ID, NULL);
- if (dev) {
- pci_read_config_byte(dev, 0x76, &value1);
- pci_read_config_byte(dev, 0x77, &value2);
- if ((value1 & 0x80) || (value2 & 0x80))
- errata.piix4.fdma = 1;
- pci_dev_put(dev);
- }
-
- break;
- }
-
- if (errata.piix4.bmisx)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Bus master activity detection (BM-IDE) erratum enabled\n"));
- if (errata.piix4.fdma)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Type-F DMA livelock erratum (C3 disabled)\n"));
-
- return 0;
-}
-
-static int acpi_processor_errata(struct acpi_processor *pr)
-{
- int result = 0;
- struct pci_dev *dev = NULL;
-
-
- if (!pr)
- return -EINVAL;
-
- /*
- * PIIX4
- */
- dev = pci_get_subsys(PCI_VENDOR_ID_INTEL,
- PCI_DEVICE_ID_INTEL_82371AB_3, PCI_ANY_ID,
- PCI_ANY_ID, NULL);
- if (dev) {
- result = acpi_processor_errata_piix4(dev);
- pci_dev_put(dev);
- }
-
- return result;
-}
-
-/* --------------------------------------------------------------------------
- Driver Interface
- -------------------------------------------------------------------------- */
-
-static int acpi_processor_get_info(struct acpi_device *device)
-{
- acpi_status status = 0;
- union acpi_object object = { 0 };
- struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
+ struct acpi_device *device = data;
struct acpi_processor *pr;
- int cpu_index, device_declaration = 0;
- static int cpu0_initialized;
-
- pr = acpi_driver_data(device);
- if (!pr)
- return -EINVAL;
-
- if (num_online_cpus() > 1)
- errata.smp = TRUE;
-
- acpi_processor_errata(pr);
-
- /*
- * Check to see if we have bus mastering arbitration control. This
- * is required for proper C3 usage (to maintain cache coherency).
- */
- if (acpi_gbl_FADT.pm2_control_block && acpi_gbl_FADT.pm2_control_length) {
- pr->flags.bm_control = 1;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Bus mastering arbitration control present\n"));
- } else
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "No bus mastering arbitration control\n"));
-
- if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) {
- /* Declared with "Processor" statement; match ProcessorID */
- status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
- if (ACPI_FAILURE(status)) {
- dev_err(&device->dev,
- "Failed to evaluate processor object (0x%x)\n",
- status);
- return -ENODEV;
- }
-
- /*
- * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
- * >>> 'acpi_get_processor_id(acpi_id, &id)' in
- * arch/xxx/acpi.c
- */
- pr->acpi_id = object.processor.proc_id;
- } else {
- /*
- * Declared with "Device" statement; match _UID.
- * Note that we don't handle string _UIDs yet.
- */
- unsigned long long value;
- status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
- NULL, &value);
- if (ACPI_FAILURE(status)) {
- dev_err(&device->dev,
- "Failed to evaluate processor _UID (0x%x)\n",
- status);
- return -ENODEV;
- }
- device_declaration = 1;
- pr->acpi_id = value;
- }
- cpu_index = acpi_get_cpuid(pr->handle, device_declaration, pr->acpi_id);
-
- /* Handle UP system running SMP kernel, with no LAPIC in MADT */
- if (!cpu0_initialized && (cpu_index == -1) &&
- (num_online_cpus() == 1)) {
- cpu_index = 0;
- }
-
- cpu0_initialized = 1;
-
- pr->id = cpu_index;
-
- /*
- * Extra Processor objects may be enumerated on MP systems with
- * less than the max # of CPUs. They should be ignored _iff
- * they are physically not present.
- */
- if (pr->id == -1) {
- if (ACPI_FAILURE(acpi_processor_hotadd_init(pr)))
- return -ENODEV;
- }
- /*
- * On some boxes several processors use the same processor bus id.
- * But they are located in different scope. For example:
- * \_SB.SCK0.CPU0
- * \_SB.SCK1.CPU0
- * Rename the processor device bus id. And the new bus id will be
- * generated as the following format:
- * CPU+CPU ID.
- */
- sprintf(acpi_device_bid(device), "CPU%X", pr->id);
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id,
- pr->acpi_id));
-
- if (!object.processor.pblk_address)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
- else if (object.processor.pblk_length != 6)
- dev_err(&device->dev, "Invalid PBLK length [%d]\n",
- object.processor.pblk_length);
- else {
- pr->throttling.address = object.processor.pblk_address;
- pr->throttling.duty_offset = acpi_gbl_FADT.duty_offset;
- pr->throttling.duty_width = acpi_gbl_FADT.duty_width;
-
- pr->pblk = object.processor.pblk_address;
-
- /*
- * We don't care about error returns - we just try to mark
- * these reserved so that nobody else is confused into thinking
- * that this region might be unused..
- *
- * (In particular, allocating the IO range for Cardbus)
- */
- request_region(pr->throttling.address, 6, "ACPI CPU throttle");
- }
-
- /*
- * If ACPI describes a slot number for this CPU, we can use it
- * ensure we get the right value in the "physical id" field
- * of /proc/cpuinfo
- */
- status = acpi_evaluate_object(pr->handle, "_SUN", NULL, &buffer);
- if (ACPI_SUCCESS(status))
- arch_fix_phys_package_id(pr->id, object.integer.value);
-
- return 0;
-}
-
-static DEFINE_PER_CPU(void *, processor_device_array);
-
-static void acpi_processor_notify(struct acpi_device *device, u32 event)
-{
- struct acpi_processor *pr = acpi_driver_data(device);
int saved;
+ if (device->handle != handle)
+ return;
+
+ pr = acpi_driver_data(device);
if (!pr)
return;
return;
}
-static int acpi_cpu_soft_notify(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
+static __cpuinit int __acpi_processor_start(struct acpi_device *device);
+
+static int __cpuinit acpi_cpu_soft_notify(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
struct acpi_processor *pr = per_cpu(processors, cpu);
+ struct acpi_device *device;
+
+ if (!pr || acpi_bus_get_device(pr->handle, &device))
+ return NOTIFY_DONE;
- if (action == CPU_ONLINE && pr) {
- /* CPU got physically hotplugged and onlined the first time:
- * Initialize missing things
+ if (action == CPU_ONLINE) {
+ /*
+ * CPU got physically hotplugged and onlined for the first time:
+ * Initialize missing things.
*/
if (pr->flags.need_hotplug_init) {
+ int ret;
+
pr_info("Will online and init hotplugged CPU: %d\n",
pr->id);
- WARN(acpi_processor_start(pr), "Failed to start CPU:"
- " %d\n", pr->id);
pr->flags.need_hotplug_init = 0;
- /* Normal CPU soft online event */
+ ret = __acpi_processor_start(device);
+ WARN(ret, "Failed to start CPU: %d\n", pr->id);
} else {
+ /* Normal CPU soft online event. */
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_hotplug(pr);
acpi_processor_reevaluate_tstate(pr, action);
acpi_processor_tstate_has_changed(pr);
}
- }
- if (action == CPU_DEAD && pr) {
- /* invalidate the flag.throttling after one CPU is offline */
+ } else if (action == CPU_DEAD) {
+ /* Invalidate flag.throttling after the CPU is offline. */
acpi_processor_reevaluate_tstate(pr, action);
}
return NOTIFY_OK;
}
-static struct notifier_block acpi_cpu_notifier =
+static struct notifier_block __refdata acpi_cpu_notifier =
{
.notifier_call = acpi_cpu_soft_notify,
};
-/*
- * acpi_processor_start() is called by the cpu_hotplug_notifier func:
- * acpi_cpu_soft_notify(). Getting it __cpuinit{data} is difficult, the
- * root cause seem to be that acpi_processor_uninstall_hotplug_notify()
- * is in the module_exit (__exit) func. Allowing acpi_processor_start()
- * to not be in __cpuinit section, but being called from __cpuinit funcs
- * via __ref looks like the right thing to do here.
- */
-static __ref int acpi_processor_start(struct acpi_processor *pr)
+static __cpuinit int __acpi_processor_start(struct acpi_device *device)
{
- struct acpi_device *device = per_cpu(processor_device_array, pr->id);
+ struct acpi_processor *pr = acpi_driver_data(device);
+ acpi_status status;
int result = 0;
+ if (!pr)
+ return -ENODEV;
+
+ if (pr->flags.need_hotplug_init)
+ return 0;
+
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
acpi_processor_load_module(pr);
goto err_remove_sysfs_thermal;
}
- return 0;
+ status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_processor_notify, device);
+ if (ACPI_SUCCESS(status))
+ return 0;
-err_remove_sysfs_thermal:
+ sysfs_remove_link(&pr->cdev->device.kobj, "device");
+ err_remove_sysfs_thermal:
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
-err_thermal_unregister:
+ err_thermal_unregister:
thermal_cooling_device_unregister(pr->cdev);
-err_power_exit:
+ err_power_exit:
acpi_processor_power_exit(pr);
-
return result;
}
-/*
- * Do not put anything in here which needs the core to be online.
- * For example MSR access or setting up things which check for cpuinfo_x86
- * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
- * Such things have to be put in and set up above in acpi_processor_start()
- */
-static int __cpuinit acpi_processor_add(struct acpi_device *device)
+static int __cpuinit acpi_processor_start(struct device *dev)
{
- struct acpi_processor *pr = NULL;
- int result = 0;
- struct device *dev;
-
- pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
- if (!pr)
- return -ENOMEM;
-
- if (!zalloc_cpumask_var(&pr->throttling.shared_cpu_map, GFP_KERNEL)) {
- result = -ENOMEM;
- goto err_free_pr;
- }
-
- pr->handle = device->handle;
- strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
- strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
- device->driver_data = pr;
-
- result = acpi_processor_get_info(device);
- if (result) {
- /* Processor is physically not present */
- return 0;
- }
-
-#ifdef CONFIG_SMP
- if (pr->id >= setup_max_cpus && pr->id != 0)
- return 0;
-#endif
-
- BUG_ON(pr->id >= nr_cpu_ids);
-
- /*
- * Buggy BIOS check
- * ACPI id of processors can be reported wrongly by the BIOS.
- * Don't trust it blindly
- */
- if (per_cpu(processor_device_array, pr->id) != NULL &&
- per_cpu(processor_device_array, pr->id) != device) {
- dev_warn(&device->dev,
- "BIOS reported wrong ACPI id %d for the processor\n",
- pr->id);
- result = -ENODEV;
- goto err_free_cpumask;
- }
- per_cpu(processor_device_array, pr->id) = device;
-
- per_cpu(processors, pr->id) = pr;
-
- dev = get_cpu_device(pr->id);
- if (sysfs_create_link(&device->dev.kobj, &dev->kobj, "sysdev")) {
- result = -EFAULT;
- goto err_clear_processor;
- }
+ struct acpi_device *device;
- /*
- * Do not start hotplugged CPUs now, but when they
- * are onlined the first time
- */
- if (pr->flags.need_hotplug_init)
- return 0;
-
- result = acpi_processor_start(pr);
- if (result)
- goto err_remove_sysfs;
-
- return 0;
+ if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+ return -ENODEV;
-err_remove_sysfs:
- sysfs_remove_link(&device->dev.kobj, "sysdev");
-err_clear_processor:
- /*
- * processor_device_array is not cleared to allow checks for buggy BIOS
- */
- per_cpu(processors, pr->id) = NULL;
-err_free_cpumask:
- free_cpumask_var(pr->throttling.shared_cpu_map);
-err_free_pr:
- kfree(pr);
- return result;
+ return __acpi_processor_start(device);
}
-static int acpi_processor_remove(struct acpi_device *device)
+static int acpi_processor_stop(struct device *dev)
{
- struct acpi_processor *pr = NULL;
+ struct acpi_device *device;
+ struct acpi_processor *pr;
+ if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
+ return 0;
- if (!device || !acpi_driver_data(device))
- return -EINVAL;
+ acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_processor_notify);
pr = acpi_driver_data(device);
-
- if (pr->id >= nr_cpu_ids)
- goto free;
-
- if (device->removal_type == ACPI_BUS_REMOVAL_EJECT) {
- if (acpi_processor_handle_eject(pr))
- return -EINVAL;
- }
+ if (!pr)
+ return 0;
acpi_processor_power_exit(pr);
- sysfs_remove_link(&device->dev.kobj, "sysdev");
-
if (pr->cdev) {
sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
sysfs_remove_link(&pr->cdev->device.kobj, "device");
thermal_cooling_device_unregister(pr->cdev);
pr->cdev = NULL;
}
-
- per_cpu(processors, pr->id) = NULL;
- per_cpu(processor_device_array, pr->id) = NULL;
- try_offline_node(cpu_to_node(pr->id));
-
-free:
- free_cpumask_var(pr->throttling.shared_cpu_map);
- kfree(pr);
-
return 0;
}
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
-/****************************************************************************
- * Acpi processor hotplug support *
- ****************************************************************************/
-
-static int is_processor_present(acpi_handle handle)
-{
- acpi_status status;
- unsigned long long sta = 0;
-
-
- status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
-
- if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
- return 1;
-
- /*
- * _STA is mandatory for a processor that supports hot plug
- */
- if (status == AE_NOT_FOUND)
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Processor does not support hot plug\n"));
- else
- ACPI_EXCEPTION((AE_INFO, status,
- "Processor Device is not present"));
- return 0;
-}
-
-static void acpi_processor_hotplug_notify(acpi_handle handle,
- u32 event, void *data)
-{
- struct acpi_device *device = NULL;
- struct acpi_eject_event *ej_event = NULL;
- u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
- acpi_status status;
- int result;
-
- acpi_scan_lock_acquire();
-
- switch (event) {
- case ACPI_NOTIFY_BUS_CHECK:
- case ACPI_NOTIFY_DEVICE_CHECK:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Processor driver received %s event\n",
- (event == ACPI_NOTIFY_BUS_CHECK) ?
- "ACPI_NOTIFY_BUS_CHECK" : "ACPI_NOTIFY_DEVICE_CHECK"));
-
- if (!is_processor_present(handle))
- break;
-
- if (!acpi_bus_get_device(handle, &device))
- break;
-
- result = acpi_bus_scan(handle);
- if (result) {
- acpi_handle_err(handle, "Unable to add the device\n");
- break;
- }
- result = acpi_bus_get_device(handle, &device);
- if (result) {
- acpi_handle_err(handle, "Missing device object\n");
- break;
- }
- ost_code = ACPI_OST_SC_SUCCESS;
- break;
-
- case ACPI_NOTIFY_EJECT_REQUEST:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "received ACPI_NOTIFY_EJECT_REQUEST\n"));
-
- if (acpi_bus_get_device(handle, &device)) {
- acpi_handle_err(handle,
- "Device don't exist, dropping EJECT\n");
- break;
- }
- if (!acpi_driver_data(device)) {
- acpi_handle_err(handle,
- "Driver data is NULL, dropping EJECT\n");
- break;
- }
-
- ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
- if (!ej_event) {
- acpi_handle_err(handle, "No memory, dropping EJECT\n");
- break;
- }
-
- get_device(&device->dev);
- ej_event->device = device;
- ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
- /* The eject is carried out asynchronously. */
- status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
- ej_event);
- if (ACPI_FAILURE(status)) {
- put_device(&device->dev);
- kfree(ej_event);
- break;
- }
- goto out;
-
- default:
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Unsupported event [0x%x]\n", event));
-
- /* non-hotplug event; possibly handled by other handler */
- goto out;
- }
-
- /* Inform firmware that the hotplug operation has completed */
- (void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
-
- out:
- acpi_scan_lock_release();
-}
-
-static acpi_status is_processor_device(acpi_handle handle)
-{
- struct acpi_device_info *info;
- char *hid;
- acpi_status status;
-
- status = acpi_get_object_info(handle, &info);
- if (ACPI_FAILURE(status))
- return status;
-
- if (info->type == ACPI_TYPE_PROCESSOR) {
- kfree(info);
- return AE_OK; /* found a processor object */
- }
-
- if (!(info->valid & ACPI_VALID_HID)) {
- kfree(info);
- return AE_ERROR;
- }
-
- hid = info->hardware_id.string;
- if ((hid == NULL) || strcmp(hid, ACPI_PROCESSOR_DEVICE_HID)) {
- kfree(info);
- return AE_ERROR;
- }
-
- kfree(info);
- return AE_OK; /* found a processor device object */
-}
-
-static acpi_status
-processor_walk_namespace_cb(acpi_handle handle,
- u32 lvl, void *context, void **rv)
-{
- acpi_status status;
- int *action = context;
-
- status = is_processor_device(handle);
- if (ACPI_FAILURE(status))
- return AE_OK; /* not a processor; continue to walk */
-
- switch (*action) {
- case INSTALL_NOTIFY_HANDLER:
- acpi_install_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- acpi_processor_hotplug_notify,
- NULL);
- break;
- case UNINSTALL_NOTIFY_HANDLER:
- acpi_remove_notify_handler(handle,
- ACPI_SYSTEM_NOTIFY,
- acpi_processor_hotplug_notify);
- break;
- default:
- break;
- }
-
- /* found a processor; skip walking underneath */
- return AE_CTRL_DEPTH;
-}
-
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
-{
- acpi_handle handle = pr->handle;
-
- if (!is_processor_present(handle)) {
- return AE_ERROR;
- }
-
- if (acpi_map_lsapic(handle, &pr->id))
- return AE_ERROR;
-
- if (arch_register_cpu(pr->id)) {
- acpi_unmap_lsapic(pr->id);
- return AE_ERROR;
- }
-
- /* CPU got hot-plugged, but cpu_data is not initialized yet
- * Set flag to delay cpu_idle/throttling initialization
- * in:
- * acpi_processor_add()
- * acpi_processor_get_info()
- * and do it when the CPU gets online the first time
- * TBD: Cleanup above functions and try to do this more elegant.
- */
- pr_info("CPU %d got hotplugged\n", pr->id);
- pr->flags.need_hotplug_init = 1;
-
- return AE_OK;
-}
-
-static int acpi_processor_handle_eject(struct acpi_processor *pr)
-{
- if (cpu_online(pr->id))
- cpu_down(pr->id);
-
- get_online_cpus();
- /*
- * The cpu might become online again at this point. So we check whether
- * the cpu has been onlined or not. If the cpu became online, it means
- * that someone wants to use the cpu. So acpi_processor_handle_eject()
- * returns -EAGAIN.
- */
- if (unlikely(cpu_online(pr->id))) {
- put_online_cpus();
- pr_warn("Failed to remove CPU %d, because other task "
- "brought the CPU back online\n", pr->id);
- return -EAGAIN;
- }
- arch_unregister_cpu(pr->id);
- acpi_unmap_lsapic(pr->id);
- put_online_cpus();
- return (0);
-}
-#else
-static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
-{
- return AE_ERROR;
-}
-static int acpi_processor_handle_eject(struct acpi_processor *pr)
-{
- return (-EINVAL);
-}
-#endif
-
-static
-void acpi_processor_install_hotplug_notify(void)
-{
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
- int action = INSTALL_NOTIFY_HANDLER;
- acpi_walk_namespace(ACPI_TYPE_ANY,
- ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- processor_walk_namespace_cb, NULL, &action, NULL);
-#endif
- register_hotcpu_notifier(&acpi_cpu_notifier);
-}
-
-static
-void acpi_processor_uninstall_hotplug_notify(void)
-{
-#ifdef CONFIG_ACPI_HOTPLUG_CPU
- int action = UNINSTALL_NOTIFY_HANDLER;
- acpi_walk_namespace(ACPI_TYPE_ANY,
- ACPI_ROOT_OBJECT,
- ACPI_UINT32_MAX,
- processor_walk_namespace_cb, NULL, &action, NULL);
-#endif
- unregister_hotcpu_notifier(&acpi_cpu_notifier);
-}
-
/*
* We keep the driver loaded even when ACPI is not running.
* This is needed for the powernow-k8 driver, that works even without
* ACPI, but needs symbols from this driver
*/
-static int __init acpi_processor_init(void)
+static int __init acpi_processor_driver_init(void)
{
int result = 0;
if (acpi_disabled)
return 0;
- result = acpi_bus_register_driver(&acpi_processor_driver);
+ result = driver_register(&acpi_processor_driver);
if (result < 0)
return result;
acpi_processor_syscore_init();
-
- acpi_processor_install_hotplug_notify();
-
+ register_hotcpu_notifier(&acpi_cpu_notifier);
acpi_thermal_cpufreq_init();
-
acpi_processor_ppc_init();
-
acpi_processor_throttling_init();
-
return 0;
}
-static void __exit acpi_processor_exit(void)
+static void __exit acpi_processor_driver_exit(void)
{
if (acpi_disabled)
return;
acpi_processor_ppc_exit();
-
acpi_thermal_cpufreq_exit();
-
- acpi_processor_uninstall_hotplug_notify();
-
+ unregister_hotcpu_notifier(&acpi_cpu_notifier);
acpi_processor_syscore_exit();
-
- acpi_bus_unregister_driver(&acpi_processor_driver);
-
- return;
+ driver_unregister(&acpi_processor_driver);
}
-module_init(acpi_processor_init);
-module_exit(acpi_processor_exit);
+module_init(acpi_processor_driver_init);
+module_exit(acpi_processor_driver_exit);
MODULE_ALIAS("processor");
#ifdef CONFIG_PM_SLEEP
static u32 saved_bm_rld;
-int acpi_processor_suspend(void)
+static int acpi_processor_suspend(void)
{
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &saved_bm_rld);
return 0;
}
-void acpi_processor_resume(void)
+static void acpi_processor_resume(void)
{
u32 resumed_bm_rld;
#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent)
+/*
+ * If set, devices will be hot-removed even if they cannot be put offline
+ * gracefully (from the kernel's standpoint).
+ */
+bool acpi_force_hot_remove;
+
static const char *dummy_hid = "device";
static LIST_HEAD(acpi_device_list);
}
static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL);
+static acpi_status acpi_bus_offline_companions(acpi_handle handle, u32 lvl,
+ void *data, void **ret_p)
+{
+ struct acpi_device *device = NULL;
+ struct acpi_device_physical_node *pn;
+ bool second_pass = (bool)data;
+ acpi_status status = AE_OK;
+
+ if (acpi_bus_get_device(handle, &device))
+ return AE_OK;
+
+ mutex_lock(&device->physical_node_lock);
+
+ list_for_each_entry(pn, &device->physical_node_list, node) {
+ int ret;
+
+ if (second_pass) {
+ /* Skip devices offlined by the first pass. */
+ if (pn->put_online)
+ continue;
+ } else {
+ pn->put_online = false;
+ }
+ ret = device_offline(pn->dev);
+ if (acpi_force_hot_remove)
+ continue;
+
+ if (ret >= 0) {
+ pn->put_online = !ret;
+ } else {
+ *ret_p = pn->dev;
+ if (second_pass) {
+ status = AE_ERROR;
+ break;
+ }
+ }
+ }
+
+ mutex_unlock(&device->physical_node_lock);
+
+ return status;
+}
+
+static acpi_status acpi_bus_online_companions(acpi_handle handle, u32 lvl,
+ void *data, void **ret_p)
+{
+ struct acpi_device *device = NULL;
+ struct acpi_device_physical_node *pn;
+
+ if (acpi_bus_get_device(handle, &device))
+ return AE_OK;
+
+ mutex_lock(&device->physical_node_lock);
+
+ list_for_each_entry(pn, &device->physical_node_list, node)
+ if (pn->put_online) {
+ device_online(pn->dev);
+ pn->put_online = false;
+ }
+
+ mutex_unlock(&device->physical_node_lock);
+
+ return AE_OK;
+}
+
static int acpi_scan_hot_remove(struct acpi_device *device)
{
acpi_handle handle = device->handle;
acpi_handle not_used;
struct acpi_object_list arg_list;
union acpi_object arg;
+ struct device *errdev;
acpi_status status;
unsigned long long sta;
return -EINVAL;
}
+ lock_device_hotplug();
+
+ /*
+ * Carry out two passes here and ignore errors in the first pass,
+ * because if the devices in question are memory blocks and
+ * CONFIG_MEMCG is set, one of the blocks may hold data structures
+ * that the other blocks depend on, but it is not known in advance which
+ * block holds them.
+ *
+ * If the first pass is successful, the second one isn't needed, though.
+ */
+ errdev = NULL;
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ NULL, acpi_bus_offline_companions,
+ (void *)false, (void **)&errdev);
+ acpi_bus_offline_companions(handle, 0, (void *)false, (void **)&errdev);
+ if (errdev) {
+ errdev = NULL;
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX,
+ NULL, acpi_bus_offline_companions,
+ (void *)true , (void **)&errdev);
+ if (!errdev || acpi_force_hot_remove)
+ acpi_bus_offline_companions(handle, 0, (void *)true,
+ (void **)&errdev);
+
+ if (errdev && !acpi_force_hot_remove) {
+ dev_warn(errdev, "Offline failed.\n");
+ acpi_bus_online_companions(handle, 0, NULL, NULL);
+ acpi_walk_namespace(ACPI_TYPE_ANY, handle,
+ ACPI_UINT32_MAX,
+ acpi_bus_online_companions, NULL,
+ NULL, NULL);
+
+ unlock_device_hotplug();
+
+ put_device(&device->dev);
+ return -EBUSY;
+ }
+ }
+
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Hot-removing device %s...\n", dev_name(&device->dev)));
acpi_bus_trim(device);
+
+ unlock_device_hotplug();
+
/* Device node has been unregistered. */
put_device(&device->dev);
device = NULL;
int error;
mutex_lock(&acpi_scan_lock);
+ lock_device_hotplug();
acpi_bus_get_device(handle, &device);
if (device) {
kobject_uevent(&device->dev.kobj, KOBJ_ONLINE);
out:
+ unlock_device_hotplug();
acpi_evaluate_hotplug_ost(handle, ost_source, ost_code, NULL);
mutex_unlock(&acpi_scan_lock);
}
acpi_device_notify);
}
-static int acpi_bus_driver_init(struct acpi_device *, struct acpi_driver *);
-static int acpi_device_probe(struct device * dev)
+static int acpi_device_probe(struct device *dev)
{
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = to_acpi_driver(dev->driver);
int ret;
- ret = acpi_bus_driver_init(acpi_dev, acpi_drv);
- if (!ret) {
- if (acpi_drv->ops.notify) {
- ret = acpi_device_install_notify_handler(acpi_dev);
- if (ret) {
- if (acpi_drv->ops.remove)
- acpi_drv->ops.remove(acpi_dev);
- acpi_dev->driver = NULL;
- acpi_dev->driver_data = NULL;
- return ret;
- }
- }
+ if (acpi_dev->handler)
+ return -EINVAL;
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Found driver [%s] for device [%s]\n",
- acpi_drv->name, acpi_dev->pnp.bus_id));
- get_device(dev);
+ if (!acpi_drv->ops.add)
+ return -ENOSYS;
+
+ ret = acpi_drv->ops.add(acpi_dev);
+ if (ret)
+ return ret;
+
+ acpi_dev->driver = acpi_drv;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "Driver [%s] successfully bound to device [%s]\n",
+ acpi_drv->name, acpi_dev->pnp.bus_id));
+
+ if (acpi_drv->ops.notify) {
+ ret = acpi_device_install_notify_handler(acpi_dev);
+ if (ret) {
+ if (acpi_drv->ops.remove)
+ acpi_drv->ops.remove(acpi_dev);
+
+ acpi_dev->driver = NULL;
+ acpi_dev->driver_data = NULL;
+ return ret;
+ }
}
- return ret;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
+ acpi_drv->name, acpi_dev->pnp.bus_id));
+ get_device(dev);
+ return 0;
}
static int acpi_device_remove(struct device * dev)
printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n",
dev_name(&device->dev));
- device->removal_type = ACPI_BUS_REMOVAL_NORMAL;
return 0;
err:
/* --------------------------------------------------------------------------
Driver Management
-------------------------------------------------------------------------- */
-/**
- * acpi_bus_driver_init - add a device to a driver
- * @device: the device to add and initialize
- * @driver: driver for the device
- *
- * Used to initialize a device via its device driver. Called whenever a
- * driver is bound to a device. Invokes the driver's add() ops.
- */
-static int
-acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver)
-{
- int result = 0;
-
- if (!device || !driver)
- return -EINVAL;
-
- if (!driver->ops.add)
- return -ENOSYS;
-
- result = driver->ops.add(device);
- if (result)
- return result;
-
- device->driver = driver;
-
- /*
- * TBD - Configuration Management: Assign resources to device based
- * upon possible configuration and currently allocated resources.
- */
-
- ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "Driver successfully bound to device\n"));
- return 0;
-}
-
/**
* acpi_bus_register_driver - register a driver with the ACPI bus
* @driver: driver being registered
if (!acpi_bus_get_device(handle, &device)) {
struct acpi_scan_handler *dev_handler = device->handler;
- device->removal_type = ACPI_BUS_REMOVAL_EJECT;
if (dev_handler) {
if (dev_handler->detach)
dev_handler->detach(device);
acpi_pci_root_init();
acpi_pci_link_init();
+ acpi_processor_init();
acpi_platform_init();
acpi_lpss_init();
+ acpi_cmos_rtc_init();
acpi_container_init();
acpi_memory_hotplug_init();
+ acpi_dock_init();
mutex_lock(&acpi_scan_lock);
/*
break;
case ACPI_STATE_S3:
+ if (!acpi_suspend_lowlevel)
+ return -ENOSYS;
error = acpi_suspend_lowlevel();
if (error)
return error;
pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
}
+static ssize_t force_remove_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", !!acpi_force_hot_remove);
+}
+
+static ssize_t force_remove_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t size)
+{
+ bool val;
+ int ret;
+
+ ret = strtobool(buf, &val);
+ if (ret < 0)
+ return ret;
+
+ lock_device_hotplug();
+ acpi_force_hot_remove = val;
+ unlock_device_hotplug();
+ return size;
+}
+
+static const struct kobj_attribute force_remove_attr =
+ __ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
+ force_remove_store);
+
int __init acpi_sysfs_init(void)
{
int result;
return result;
hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
+ result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
+ if (result)
+ return result;
+
result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
return result;
}
int error;
acpi_status status;
- if (device->handler)
- return -EINVAL;
-
status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
device->parent->handle, 1,
acpi_video_bus_match, NULL,
spin_unlock_irqrestore(ap->lock, flags);
- if (wait)
+ if (wait) {
ata_port_wait_eh(ap);
+ flush_work(&ap->hotplug_task.work);
+ }
}
static void ata_acpi_dev_notify_dock(acpi_handle handle, u32 event, void *data)
.uevent = ata_acpi_ap_uevent,
};
+void ata_acpi_hotplug_init(struct ata_host *host)
+{
+ int i;
+
+ for (i = 0; i < host->n_ports; i++) {
+ struct ata_port *ap = host->ports[i];
+ acpi_handle handle;
+ struct ata_device *dev;
+
+ if (!ap)
+ continue;
+
+ handle = ata_ap_acpi_handle(ap);
+ if (handle) {
+ /* we might be on a docking station */
+ register_hotplug_dock_device(handle,
+ &ata_acpi_ap_dock_ops, ap,
+ NULL, NULL);
+ }
+
+ ata_for_each_dev(dev, &ap->link, ALL) {
+ handle = ata_dev_acpi_handle(dev);
+ if (!handle)
+ continue;
+
+ /* we might be on a docking station */
+ register_hotplug_dock_device(handle,
+ &ata_acpi_dev_dock_ops,
+ dev, NULL, NULL);
+ }
+ }
+}
+
/**
* ata_acpi_dissociate - dissociate ATA host from ACPI objects
* @host: target ATA host
if (rc)
goto err_tadd;
+ ata_acpi_hotplug_init(host);
+
/* set cable, sata_spd_limit and report */
for (i = 0; i < host->n_ports; i++) {
struct ata_port *ap = host->ports[i];
extern void ata_acpi_unregister(void);
extern void ata_acpi_bind(struct ata_device *dev);
extern void ata_acpi_unbind(struct ata_device *dev);
+extern void ata_acpi_hotplug_init(struct ata_host *host);
#else
static inline void ata_acpi_dissociate(struct ata_host *host) { }
static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
static inline void ata_acpi_unregister(void) { }
static inline void ata_acpi_bind(struct ata_device *dev) { }
static inline void ata_acpi_unbind(struct ata_device *dev) { }
+static inline void ata_acpi_hotplug_init(struct ata_host *host) {}
#endif
/* libata-scsi.c */
static struct device_attribute uevent_attr =
__ATTR(uevent, S_IRUGO | S_IWUSR, show_uevent, store_uevent);
+static ssize_t show_online(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ bool val;
+
+ lock_device_hotplug();
+ val = !dev->offline;
+ unlock_device_hotplug();
+ return sprintf(buf, "%u\n", val);
+}
+
+static ssize_t store_online(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ bool val;
+ int ret;
+
+ ret = strtobool(buf, &val);
+ if (ret < 0)
+ return ret;
+
+ lock_device_hotplug();
+ ret = val ? device_online(dev) : device_offline(dev);
+ unlock_device_hotplug();
+ return ret < 0 ? ret : count;
+}
+
+static struct device_attribute online_attr =
+ __ATTR(online, S_IRUGO | S_IWUSR, show_online, store_online);
+
static int device_add_attributes(struct device *dev,
struct device_attribute *attrs)
{
if (error)
goto err_remove_type_groups;
+ if (device_supports_offline(dev) && !dev->offline_disabled) {
+ error = device_create_file(dev, &online_attr);
+ if (error)
+ goto err_remove_type_groups;
+ }
+
return 0;
err_remove_type_groups:
struct class *class = dev->class;
const struct device_type *type = dev->type;
+ device_remove_file(dev, &online_attr);
device_remove_groups(dev, dev->groups);
if (type)
EXPORT_SYMBOL_GPL(device_create_file);
EXPORT_SYMBOL_GPL(device_remove_file);
+static DEFINE_MUTEX(device_hotplug_lock);
+
+void lock_device_hotplug(void)
+{
+ mutex_lock(&device_hotplug_lock);
+}
+
+void unlock_device_hotplug(void)
+{
+ mutex_unlock(&device_hotplug_lock);
+}
+
+static int device_check_offline(struct device *dev, void *not_used)
+{
+ int ret;
+
+ ret = device_for_each_child(dev, NULL, device_check_offline);
+ if (ret)
+ return ret;
+
+ return device_supports_offline(dev) && !dev->offline ? -EBUSY : 0;
+}
+
+/**
+ * device_offline - Prepare the device for hot-removal.
+ * @dev: Device to be put offline.
+ *
+ * Execute the device bus type's .offline() callback, if present, to prepare
+ * the device for a subsequent hot-removal. If that succeeds, the device must
+ * not be used until either it is removed or its bus type's .online() callback
+ * is executed.
+ *
+ * Call under device_hotplug_lock.
+ */
+int device_offline(struct device *dev)
+{
+ int ret;
+
+ if (dev->offline_disabled)
+ return -EPERM;
+
+ ret = device_for_each_child(dev, NULL, device_check_offline);
+ if (ret)
+ return ret;
+
+ device_lock(dev);
+ if (device_supports_offline(dev)) {
+ if (dev->offline) {
+ ret = 1;
+ } else {
+ ret = dev->bus->offline(dev);
+ if (!ret) {
+ kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
+ dev->offline = true;
+ }
+ }
+ }
+ device_unlock(dev);
+
+ return ret;
+}
+
+/**
+ * device_online - Put the device back online after successful device_offline().
+ * @dev: Device to be put back online.
+ *
+ * If device_offline() has been successfully executed for @dev, but the device
+ * has not been removed subsequently, execute its bus type's .online() callback
+ * to indicate that the device can be used again.
+ *
+ * Call under device_hotplug_lock.
+ */
+int device_online(struct device *dev)
+{
+ int ret = 0;
+
+ device_lock(dev);
+ if (device_supports_offline(dev)) {
+ if (dev->offline) {
+ ret = dev->bus->online(dev);
+ if (!ret) {
+ kobject_uevent(&dev->kobj, KOBJ_ONLINE);
+ dev->offline = false;
+ }
+ } else {
+ ret = 1;
+ }
+ }
+ device_unlock(dev);
+
+ return ret;
+}
+
struct root_device {
struct device dev;
struct module *owner;
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/percpu.h>
+#include <linux/acpi.h>
#include "base.h"
-struct bus_type cpu_subsys = {
- .name = "cpu",
- .dev_name = "cpu",
-};
-EXPORT_SYMBOL_GPL(cpu_subsys);
-
static DEFINE_PER_CPU(struct device *, cpu_sys_devices);
+static int cpu_subsys_match(struct device *dev, struct device_driver *drv)
+{
+ /* ACPI style match is the only one that may succeed. */
+ if (acpi_driver_match_device(dev, drv))
+ return 1;
+
+ return 0;
+}
+
#ifdef CONFIG_HOTPLUG_CPU
static void change_cpu_under_node(struct cpu *cpu,
unsigned int from_nid, unsigned int to_nid)
cpu->node_id = to_nid;
}
-static ssize_t show_online(struct device *dev,
- struct device_attribute *attr,
- char *buf)
+static int __ref cpu_subsys_online(struct device *dev)
{
struct cpu *cpu = container_of(dev, struct cpu, dev);
+ int cpuid = dev->id;
+ int from_nid, to_nid;
+ int ret;
- return sprintf(buf, "%u\n", !!cpu_online(cpu->dev.id));
+ cpu_hotplug_driver_lock();
+
+ from_nid = cpu_to_node(cpuid);
+ ret = cpu_up(cpuid);
+ /*
+ * When hot adding memory to memoryless node and enabling a cpu
+ * on the node, node number of the cpu may internally change.
+ */
+ to_nid = cpu_to_node(cpuid);
+ if (from_nid != to_nid)
+ change_cpu_under_node(cpu, from_nid, to_nid);
+
+ cpu_hotplug_driver_unlock();
+ return ret;
}
-static ssize_t __ref store_online(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
+static int cpu_subsys_offline(struct device *dev)
{
- struct cpu *cpu = container_of(dev, struct cpu, dev);
- int cpuid = cpu->dev.id;
- int from_nid, to_nid;
- ssize_t ret;
+ int ret;
cpu_hotplug_driver_lock();
- switch (buf[0]) {
- case '0':
- ret = cpu_down(cpuid);
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_OFFLINE);
- break;
- case '1':
- from_nid = cpu_to_node(cpuid);
- ret = cpu_up(cpuid);
-
- /*
- * When hot adding memory to memoryless node and enabling a cpu
- * on the node, node number of the cpu may internally change.
- */
- to_nid = cpu_to_node(cpuid);
- if (from_nid != to_nid)
- change_cpu_under_node(cpu, from_nid, to_nid);
-
- if (!ret)
- kobject_uevent(&dev->kobj, KOBJ_ONLINE);
- break;
- default:
- ret = -EINVAL;
- }
+ ret = cpu_down(dev->id);
cpu_hotplug_driver_unlock();
-
- if (ret >= 0)
- ret = count;
return ret;
}
-static DEVICE_ATTR(online, 0644, show_online, store_online);
-static void __cpuinit register_cpu_control(struct cpu *cpu)
-{
- device_create_file(&cpu->dev, &dev_attr_online);
-}
void unregister_cpu(struct cpu *cpu)
{
int logical_cpu = cpu->dev.id;
unregister_cpu_under_node(logical_cpu, cpu_to_node(logical_cpu));
- device_remove_file(&cpu->dev, &dev_attr_online);
-
device_unregister(&cpu->dev);
per_cpu(cpu_sys_devices, logical_cpu) = NULL;
return;
static DEVICE_ATTR(release, S_IWUSR, NULL, cpu_release_store);
#endif /* CONFIG_ARCH_CPU_PROBE_RELEASE */
-#else /* ... !CONFIG_HOTPLUG_CPU */
-static inline void register_cpu_control(struct cpu *cpu)
-{
-}
#endif /* CONFIG_HOTPLUG_CPU */
+struct bus_type cpu_subsys = {
+ .name = "cpu",
+ .dev_name = "cpu",
+ .match = cpu_subsys_match,
+#ifdef CONFIG_HOTPLUG_CPU
+ .online = cpu_subsys_online,
+ .offline = cpu_subsys_offline,
+#endif
+};
+EXPORT_SYMBOL_GPL(cpu_subsys);
+
#ifdef CONFIG_KEXEC
#include <linux/kexec.h>
cpu->dev.id = num;
cpu->dev.bus = &cpu_subsys;
cpu->dev.release = cpu_device_release;
+ cpu->dev.offline_disabled = !cpu->hotpluggable;
+ cpu->dev.offline = !cpu_online(num);
#ifdef CONFIG_ARCH_HAS_CPU_AUTOPROBE
cpu->dev.bus->uevent = arch_cpu_uevent;
#endif
error = device_register(&cpu->dev);
- if (!error && cpu->hotpluggable)
- register_cpu_control(cpu);
if (!error)
per_cpu(cpu_sys_devices, num) = &cpu->dev;
if (!error)
return section_nr / sections_per_block;
}
+static int memory_subsys_online(struct device *dev);
+static int memory_subsys_offline(struct device *dev);
+
static struct bus_type memory_subsys = {
.name = MEMORY_CLASS_NAME,
.dev_name = MEMORY_CLASS_NAME,
+ .online = memory_subsys_online,
+ .offline = memory_subsys_offline,
};
static BLOCKING_NOTIFIER_HEAD(memory_chain);
memory->dev.bus = &memory_subsys;
memory->dev.id = memory->start_section_nr / sections_per_block;
memory->dev.release = memory_block_release;
+ memory->dev.offline = memory->state == MEM_OFFLINE;
error = device_register(&memory->dev);
return error;
{
int ret = 0;
- if (mem->state != from_state_req) {
- ret = -EINVAL;
- goto out;
- }
+ if (mem->state != from_state_req)
+ return -EINVAL;
if (to_state == MEM_OFFLINE)
mem->state = MEM_GOING_OFFLINE;
ret = memory_block_action(mem->start_section_nr, to_state, online_type);
+ mem->state = ret ? from_state_req : to_state;
+ return ret;
+}
- if (ret) {
- mem->state = from_state_req;
- goto out;
- }
+static int memory_subsys_online(struct device *dev)
+{
+ struct memory_block *mem = container_of(dev, struct memory_block, dev);
+ int ret;
- mem->state = to_state;
- switch (mem->state) {
- case MEM_OFFLINE:
- kobject_uevent(&mem->dev.kobj, KOBJ_OFFLINE);
- break;
- case MEM_ONLINE:
- kobject_uevent(&mem->dev.kobj, KOBJ_ONLINE);
- break;
- default:
- break;
+ mutex_lock(&mem->state_mutex);
+
+ ret = mem->state == MEM_ONLINE ? 0 :
+ __memory_block_change_state(mem, MEM_ONLINE, MEM_OFFLINE,
+ ONLINE_KEEP);
+
+ mutex_unlock(&mem->state_mutex);
+ return ret;
+}
+
+static int memory_subsys_offline(struct device *dev)
+{
+ struct memory_block *mem = container_of(dev, struct memory_block, dev);
+ int ret;
+
+ mutex_lock(&mem->state_mutex);
+
+ ret = mem->state == MEM_OFFLINE ? 0 :
+ __memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE, -1);
+
+ mutex_unlock(&mem->state_mutex);
+ return ret;
+}
+
+static int __memory_block_change_state_uevent(struct memory_block *mem,
+ unsigned long to_state, unsigned long from_state_req,
+ int online_type)
+{
+ int ret = __memory_block_change_state(mem, to_state, from_state_req,
+ online_type);
+ if (!ret) {
+ switch (mem->state) {
+ case MEM_OFFLINE:
+ kobject_uevent(&mem->dev.kobj, KOBJ_OFFLINE);
+ break;
+ case MEM_ONLINE:
+ kobject_uevent(&mem->dev.kobj, KOBJ_ONLINE);
+ break;
+ default:
+ break;
+ }
}
-out:
return ret;
}
int ret;
mutex_lock(&mem->state_mutex);
- ret = __memory_block_change_state(mem, to_state, from_state_req,
- online_type);
+ ret = __memory_block_change_state_uevent(mem, to_state, from_state_req,
+ online_type);
mutex_unlock(&mem->state_mutex);
return ret;
struct device_attribute *attr, const char *buf, size_t count)
{
struct memory_block *mem;
+ bool offline;
int ret = -EINVAL;
mem = container_of(dev, struct memory_block, dev);
- if (!strncmp(buf, "online_kernel", min_t(int, count, 13)))
+ lock_device_hotplug();
+
+ if (!strncmp(buf, "online_kernel", min_t(int, count, 13))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_KERNEL);
- else if (!strncmp(buf, "online_movable", min_t(int, count, 14)))
+ } else if (!strncmp(buf, "online_movable", min_t(int, count, 14))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_MOVABLE);
- else if (!strncmp(buf, "online", min_t(int, count, 6)))
+ } else if (!strncmp(buf, "online", min_t(int, count, 6))) {
+ offline = false;
ret = memory_block_change_state(mem, MEM_ONLINE,
MEM_OFFLINE, ONLINE_KEEP);
- else if(!strncmp(buf, "offline", min_t(int, count, 7)))
+ } else if(!strncmp(buf, "offline", min_t(int, count, 7))) {
+ offline = true;
ret = memory_block_change_state(mem, MEM_OFFLINE,
MEM_ONLINE, -1);
+ }
+ if (!ret)
+ dev->offline = offline;
+
+ unlock_device_hotplug();
if (ret)
return ret;
}
#endif /* CONFIG_MEMORY_HOTREMOVE */
-/*
- * offline one memory block. If the memory block has been offlined, do nothing.
- */
-int offline_memory_block(struct memory_block *mem)
-{
- int ret = 0;
-
- mutex_lock(&mem->state_mutex);
- if (mem->state != MEM_OFFLINE)
- ret = __memory_block_change_state(mem, MEM_OFFLINE, MEM_ONLINE, -1);
- mutex_unlock(&mem->state_mutex);
-
- return ret;
-}
-
/* return true if the memory block is offlined, otherwise, return false */
bool is_memblock_offlined(struct memory_block *mem)
{
/*
- * Intel Lynxpoint LPSS clocks.
+ * Intel Low Power Subsystem clocks.
*
* Copyright (C) 2013, Intel Corporation
* Authors: Mika Westerberg <mika.westerberg@linux.intel.com>
#include <linux/platform_data/clk-lpss.h>
#include <linux/platform_device.h>
-#define PRV_CLOCK_PARAMS 0x800
-
static int lpt_clk_probe(struct platform_device *pdev)
{
struct lpss_clk_data *drvdata;
};
MODULE_DEVICE_TABLE(x86cpu, acpi_cpufreq_ids);
+static const struct acpi_device_id processor_device_ids[] = {
+ {ACPI_PROCESSOR_OBJECT_HID, },
+ {ACPI_PROCESSOR_DEVICE_HID, },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, processor_device_ids);
+
MODULE_ALIAS("acpi");
static struct cpufreq_governor cpufreq_gov_ondemand;
#endif
+static unsigned int default_powersave_bias;
+
static void ondemand_powersave_bias_init_cpu(int cpu)
{
struct od_cpu_dbs_info_s *dbs_info = &per_cpu(od_cpu_dbs_info, cpu);
tuners->sampling_down_factor = DEF_SAMPLING_DOWN_FACTOR;
tuners->ignore_nice = 0;
- tuners->powersave_bias = 0;
+ tuners->powersave_bias = default_powersave_bias;
tuners->io_is_busy = should_io_be_busy();
dbs_data->tuners = tuners;
unsigned int cpu;
cpumask_t done;
+ default_powersave_bias = powersave_bias;
cpumask_clear(&done);
get_online_cpus();
continue;
policy = per_cpu(od_cpu_dbs_info, cpu).cdbs.cur_policy;
- dbs_data = policy->governor_data;
- od_tuners = dbs_data->tuners;
- od_tuners->powersave_bias = powersave_bias;
+ if (!policy)
+ continue;
cpumask_or(&done, &done, policy->cpus);
+
+ if (policy->governor != &cpufreq_gov_ondemand)
+ continue;
+
+ dbs_data = policy->governor_data;
+ od_tuners = dbs_data->tuners;
+ od_tuners->powersave_bias = default_powersave_bias;
}
put_online_cpus();
}
-config CPU_IDLE
+menuconfig CPU_IDLE
bool "CPU idle PM support"
default y if ACPI || PPC_PSERIES
+ select CPU_IDLE_GOV_LADDER if (!NO_HZ && !NO_HZ_IDLE)
+ select CPU_IDLE_GOV_MENU if (NO_HZ || NO_HZ_IDLE)
help
CPU idle is a generic framework for supporting software-controlled
idle processor power management. It includes modular cross-platform
If you're using an ACPI-enabled platform, you should say Y here.
+if CPU_IDLE
+
config CPU_IDLE_MULTIPLE_DRIVERS
bool "Support multiple cpuidle drivers"
- depends on CPU_IDLE
default n
help
Allows the cpuidle framework to use different drivers for each CPU.
states. If unsure say N.
config CPU_IDLE_GOV_LADDER
- bool
- depends on CPU_IDLE
+ bool "Ladder governor (for periodic timer tick)"
default y
config CPU_IDLE_GOV_MENU
- bool
- depends on CPU_IDLE && NO_HZ
+ bool "Menu governor (for tickless system)"
default y
-config ARCH_NEEDS_CPU_IDLE_COUPLED
- def_bool n
-
-if CPU_IDLE
-
config CPU_IDLE_CALXEDA
bool "CPU Idle Driver for Calxeda processors"
depends on ARCH_HIGHBANK
help
Select this to enable cpuidle on Calxeda processors.
+config CPU_IDLE_ZYNQ
+ bool "CPU Idle Driver for Xilinx Zynq processors"
+ depends on ARCH_ZYNQ
+ help
+ Select this to enable cpuidle on Xilinx Zynq processors.
+
endif
+
+config ARCH_NEEDS_CPU_IDLE_COUPLED
+ def_bool n
obj-$(CONFIG_CPU_IDLE_CALXEDA) += cpuidle-calxeda.o
obj-$(CONFIG_ARCH_KIRKWOOD) += cpuidle-kirkwood.o
+obj-$(CONFIG_CPU_IDLE_ZYNQ) += cpuidle-zynq.o
--- /dev/null
+/*
+ * Copyright (C) 2012-2013 Xilinx
+ *
+ * CPU idle support for Xilinx Zynq
+ *
+ * based on arch/arm/mach-at91/cpuidle.c
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * The cpu idle uses wait-for-interrupt and RAM self refresh in order
+ * to implement two idle states -
+ * #1 wait-for-interrupt
+ * #2 wait-for-interrupt and RAM self refresh
+ *
+ * Maintainer: Michal Simek <michal.simek@xilinx.com>
+ */
+
+#include <linux/init.h>
+#include <linux/cpu_pm.h>
+#include <linux/cpuidle.h>
+#include <linux/of.h>
+#include <asm/proc-fns.h>
+#include <asm/cpuidle.h>
+
+#define ZYNQ_MAX_STATES 2
+
+/* Actual code that puts the SoC in different idle states */
+static int zynq_enter_idle(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv, int index)
+{
+ /* Devices must be stopped here */
+ cpu_pm_enter();
+
+ /* Add code for DDR self refresh start */
+ cpu_do_idle();
+
+ /* Add code for DDR self refresh stop */
+ cpu_pm_exit();
+
+ return index;
+}
+
+static struct cpuidle_driver zynq_idle_driver = {
+ .name = "zynq_idle",
+ .owner = THIS_MODULE,
+ .states = {
+ ARM_CPUIDLE_WFI_STATE,
+ {
+ .enter = zynq_enter_idle,
+ .exit_latency = 10,
+ .target_residency = 10000,
+ .flags = CPUIDLE_FLAG_TIME_VALID |
+ CPUIDLE_FLAG_TIMER_STOP,
+ .name = "RAM_SR",
+ .desc = "WFI and RAM Self Refresh",
+ },
+ },
+ .safe_state_index = 0,
+ .state_count = ZYNQ_MAX_STATES,
+};
+
+/* Initialize CPU idle by registering the idle states */
+static int __init zynq_cpuidle_init(void)
+{
+ if (!of_machine_is_compatible("xlnx,zynq-7000"))
+ return -ENODEV;
+
+ pr_info("Xilinx Zynq CpuIdle Driver started\n");
+
+ return cpuidle_register(&zynq_idle_driver, NULL);
+}
+
+device_initcall(zynq_cpuidle_init);
int cpu;
struct cpuidle_device *device;
- for_each_possible_cpu(cpu) {
+ for_each_cpu(cpu, drv->cpumask) {
device = &per_cpu(cpuidle_dev, cpu);
cpuidle_unregister_device(device);
}
return ret;
}
- for_each_possible_cpu(cpu) {
+ for_each_cpu(cpu, drv->cpumask) {
device = &per_cpu(cpuidle_dev, cpu);
device->cpu = cpu;
DEFINE_SPINLOCK(cpuidle_driver_lock);
-static void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu);
-static struct cpuidle_driver * __cpuidle_get_cpu_driver(int cpu);
+#ifdef CONFIG_CPU_IDLE_MULTIPLE_DRIVERS
-static void cpuidle_setup_broadcast_timer(void *arg)
+static DEFINE_PER_CPU(struct cpuidle_driver *, cpuidle_drivers);
+
+/**
+ * __cpuidle_get_cpu_driver - return the cpuidle driver tied to a CPU.
+ * @cpu: the CPU handled by the driver
+ *
+ * Returns a pointer to struct cpuidle_driver or NULL if no driver has been
+ * registered for @cpu.
+ */
+static struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
{
- int cpu = smp_processor_id();
- clockevents_notify((long)(arg), &cpu);
+ return per_cpu(cpuidle_drivers, cpu);
}
-static void __cpuidle_driver_init(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_unset_driver - unset per CPU driver variables.
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * For each CPU in the driver's CPU mask, unset the registered driver per CPU
+ * variable. If @drv is different from the registered driver, the corresponding
+ * variable is not cleared.
+ */
+static inline void __cpuidle_unset_driver(struct cpuidle_driver *drv)
{
- int i;
-
- drv->refcnt = 0;
+ int cpu;
- for (i = drv->state_count - 1; i >= 0 ; i--) {
+ for_each_cpu(cpu, drv->cpumask) {
- if (!(drv->states[i].flags & CPUIDLE_FLAG_TIMER_STOP))
+ if (drv != __cpuidle_get_cpu_driver(cpu))
continue;
- drv->bctimer = 1;
- on_each_cpu_mask(get_cpu_mask(cpu), cpuidle_setup_broadcast_timer,
- (void *)CLOCK_EVT_NOTIFY_BROADCAST_ON, 1);
- break;
+ per_cpu(cpuidle_drivers, cpu) = NULL;
}
}
-static int __cpuidle_register_driver(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_set_driver - set per CPU driver variables the the given driver.
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * For each CPU in the driver's cpumask, unset the registered driver per CPU
+ * to @drv.
+ *
+ * Returns 0 on success, -EBUSY if the CPUs have driver(s) already.
+ */
+static inline int __cpuidle_set_driver(struct cpuidle_driver *drv)
{
- if (!drv || !drv->state_count)
- return -EINVAL;
-
- if (cpuidle_disabled())
- return -ENODEV;
+ int cpu;
- if (__cpuidle_get_cpu_driver(cpu))
- return -EBUSY;
+ for_each_cpu(cpu, drv->cpumask) {
- __cpuidle_driver_init(drv, cpu);
+ if (__cpuidle_get_cpu_driver(cpu)) {
+ __cpuidle_unset_driver(drv);
+ return -EBUSY;
+ }
- __cpuidle_set_cpu_driver(drv, cpu);
+ per_cpu(cpuidle_drivers, cpu) = drv;
+ }
return 0;
}
-static void __cpuidle_unregister_driver(struct cpuidle_driver *drv, int cpu)
-{
- if (drv != __cpuidle_get_cpu_driver(cpu))
- return;
+#else
- if (!WARN_ON(drv->refcnt > 0))
- __cpuidle_set_cpu_driver(NULL, cpu);
+static struct cpuidle_driver *cpuidle_curr_driver;
- if (drv->bctimer) {
- drv->bctimer = 0;
- on_each_cpu_mask(get_cpu_mask(cpu), cpuidle_setup_broadcast_timer,
- (void *)CLOCK_EVT_NOTIFY_BROADCAST_OFF, 1);
- }
+/**
+ * __cpuidle_get_cpu_driver - return the global cpuidle driver pointer.
+ * @cpu: ignored without the multiple driver support
+ *
+ * Return a pointer to a struct cpuidle_driver object or NULL if no driver was
+ * previously registered.
+ */
+static inline struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
+{
+ return cpuidle_curr_driver;
}
-#ifdef CONFIG_CPU_IDLE_MULTIPLE_DRIVERS
+/**
+ * __cpuidle_set_driver - assign the global cpuidle driver variable.
+ * @drv: pointer to a struct cpuidle_driver object
+ *
+ * Returns 0 on success, -EBUSY if the driver is already registered.
+ */
+static inline int __cpuidle_set_driver(struct cpuidle_driver *drv)
+{
+ if (cpuidle_curr_driver)
+ return -EBUSY;
-static DEFINE_PER_CPU(struct cpuidle_driver *, cpuidle_drivers);
+ cpuidle_curr_driver = drv;
-static void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- per_cpu(cpuidle_drivers, cpu) = drv;
+ return 0;
}
-static struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
+/**
+ * __cpuidle_unset_driver - unset the global cpuidle driver variable.
+ * @drv: a pointer to a struct cpuidle_driver
+ *
+ * Reset the global cpuidle variable to NULL. If @drv does not match the
+ * registered driver, do nothing.
+ */
+static inline void __cpuidle_unset_driver(struct cpuidle_driver *drv)
{
- return per_cpu(cpuidle_drivers, cpu);
+ if (drv == cpuidle_curr_driver)
+ cpuidle_curr_driver = NULL;
}
-static void __cpuidle_unregister_all_cpu_driver(struct cpuidle_driver *drv)
+#endif
+
+/**
+ * cpuidle_setup_broadcast_timer - enable/disable the broadcast timer
+ * @arg: a void pointer used to match the SMP cross call API
+ *
+ * @arg is used as a value of type 'long' with on of the two values:
+ * - CLOCK_EVT_NOTIFY_BROADCAST_ON
+ * - CLOCK_EVT_NOTIFY_BROADCAST_OFF
+ *
+ * Set the broadcast timer notification for the current CPU. This function
+ * is executed per CPU by an SMP cross call. It not supposed to be called
+ * directly.
+ */
+static void cpuidle_setup_broadcast_timer(void *arg)
{
- int cpu;
- for_each_present_cpu(cpu)
- __cpuidle_unregister_driver(drv, cpu);
+ int cpu = smp_processor_id();
+ clockevents_notify((long)(arg), &cpu);
}
-static int __cpuidle_register_all_cpu_driver(struct cpuidle_driver *drv)
+/**
+ * __cpuidle_driver_init - initialize the driver's internal data
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+static int __cpuidle_driver_init(struct cpuidle_driver *drv)
{
- int ret = 0;
- int i, cpu;
+ int i;
- for_each_present_cpu(cpu) {
- ret = __cpuidle_register_driver(drv, cpu);
- if (ret)
- break;
- }
+ drv->refcnt = 0;
- if (ret)
- for_each_present_cpu(i) {
- if (i == cpu)
- break;
- __cpuidle_unregister_driver(drv, i);
- }
+ /*
+ * Use all possible CPUs as the default, because if the kernel boots
+ * with some CPUs offline and then we online one of them, the CPU
+ * notifier has to know which driver to assign.
+ */
+ if (!drv->cpumask)
+ drv->cpumask = (struct cpumask *)cpu_possible_mask;
+
+ /*
+ * Look for the timer stop flag in the different states, so that we know
+ * if the broadcast timer has to be set up. The loop is in the reverse
+ * order, because usually on of the the deeper states has this flag set.
+ */
+ for (i = drv->state_count - 1; i >= 0 ; i--) {
+ if (!(drv->states[i].flags & CPUIDLE_FLAG_TIMER_STOP))
+ continue;
- return ret;
+ drv->bctimer = 1;
+ break;
+ }
+
+ return 0;
}
-int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu)
+/**
+ * __cpuidle_register_driver: register the driver
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Do some sanity checks, initialize the driver, assign the driver to the
+ * global cpuidle driver variable(s) and set up the broadcast timer if the
+ * cpuidle driver has some states that shut down the local timer.
+ *
+ * Returns 0 on success, a negative error code otherwise:
+ * * -EINVAL if the driver pointer is NULL or no idle states are available
+ * * -ENODEV if the cpuidle framework is disabled
+ * * -EBUSY if the driver is already assigned to the global variable(s)
+ */
+static int __cpuidle_register_driver(struct cpuidle_driver *drv)
{
int ret;
- spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_driver(drv, cpu);
- spin_unlock(&cpuidle_driver_lock);
+ if (!drv || !drv->state_count)
+ return -EINVAL;
- return ret;
-}
+ if (cpuidle_disabled())
+ return -ENODEV;
-void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_driver(drv, cpu);
- spin_unlock(&cpuidle_driver_lock);
-}
+ ret = __cpuidle_driver_init(drv);
+ if (ret)
+ return ret;
-/**
- * cpuidle_register_driver - registers a driver
- * @drv: the driver
- */
-int cpuidle_register_driver(struct cpuidle_driver *drv)
-{
- int ret;
+ ret = __cpuidle_set_driver(drv);
+ if (ret)
+ return ret;
- spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_all_cpu_driver(drv);
- spin_unlock(&cpuidle_driver_lock);
+ if (drv->bctimer)
+ on_each_cpu_mask(drv->cpumask, cpuidle_setup_broadcast_timer,
+ (void *)CLOCK_EVT_NOTIFY_BROADCAST_ON, 1);
- return ret;
+ return 0;
}
-EXPORT_SYMBOL_GPL(cpuidle_register_driver);
/**
- * cpuidle_unregister_driver - unregisters a driver
- * @drv: the driver
+ * __cpuidle_unregister_driver - unregister the driver
+ * @drv: a valid pointer to a struct cpuidle_driver
+ *
+ * Check if the driver is no longer in use, reset the global cpuidle driver
+ * variable(s) and disable the timer broadcast notification mechanism if it was
+ * in use.
+ *
*/
-void cpuidle_unregister_driver(struct cpuidle_driver *drv)
+static void __cpuidle_unregister_driver(struct cpuidle_driver *drv)
{
- spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_all_cpu_driver(drv);
- spin_unlock(&cpuidle_driver_lock);
-}
-EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);
-
-#else
-
-static struct cpuidle_driver *cpuidle_curr_driver;
+ if (WARN_ON(drv->refcnt > 0))
+ return;
-static inline void __cpuidle_set_cpu_driver(struct cpuidle_driver *drv, int cpu)
-{
- cpuidle_curr_driver = drv;
-}
+ if (drv->bctimer) {
+ drv->bctimer = 0;
+ on_each_cpu_mask(drv->cpumask, cpuidle_setup_broadcast_timer,
+ (void *)CLOCK_EVT_NOTIFY_BROADCAST_OFF, 1);
+ }
-static inline struct cpuidle_driver *__cpuidle_get_cpu_driver(int cpu)
-{
- return cpuidle_curr_driver;
+ __cpuidle_unset_driver(drv);
}
/**
* cpuidle_register_driver - registers a driver
- * @drv: the driver
+ * @drv: a pointer to a valid struct cpuidle_driver
+ *
+ * Register the driver under a lock to prevent concurrent attempts to
+ * [un]register the driver from occuring at the same time.
+ *
+ * Returns 0 on success, a negative error code (returned by
+ * __cpuidle_register_driver()) otherwise.
*/
int cpuidle_register_driver(struct cpuidle_driver *drv)
{
- int ret, cpu;
+ int ret;
- cpu = get_cpu();
spin_lock(&cpuidle_driver_lock);
- ret = __cpuidle_register_driver(drv, cpu);
+ ret = __cpuidle_register_driver(drv);
spin_unlock(&cpuidle_driver_lock);
- put_cpu();
return ret;
}
/**
* cpuidle_unregister_driver - unregisters a driver
- * @drv: the driver
+ * @drv: a pointer to a valid struct cpuidle_driver
+ *
+ * Unregisters the cpuidle driver under a lock to prevent concurrent attempts
+ * to [un]register the driver from occuring at the same time. @drv has to
+ * match the currently registered driver.
*/
void cpuidle_unregister_driver(struct cpuidle_driver *drv)
{
- int cpu;
-
- cpu = get_cpu();
spin_lock(&cpuidle_driver_lock);
- __cpuidle_unregister_driver(drv, cpu);
+ __cpuidle_unregister_driver(drv);
spin_unlock(&cpuidle_driver_lock);
- put_cpu();
}
EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);
-#endif
/**
- * cpuidle_get_driver - return the current driver
+ * cpuidle_get_driver - return the driver tied to the current CPU.
+ *
+ * Returns a struct cpuidle_driver pointer, or NULL if no driver is registered.
*/
struct cpuidle_driver *cpuidle_get_driver(void)
{
EXPORT_SYMBOL_GPL(cpuidle_get_driver);
/**
- * cpuidle_get_cpu_driver - return the driver tied with a cpu
+ * cpuidle_get_cpu_driver - return the driver registered for a CPU.
+ * @dev: a valid pointer to a struct cpuidle_device
+ *
+ * Returns a struct cpuidle_driver pointer, or NULL if no driver is registered
+ * for the CPU associated with @dev.
*/
struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev)
{
}
EXPORT_SYMBOL_GPL(cpuidle_get_cpu_driver);
+/**
+ * cpuidle_driver_ref - get a reference to the driver.
+ *
+ * Increment the reference counter of the cpuidle driver associated with
+ * the current CPU.
+ *
+ * Returns a pointer to the driver, or NULL if the current CPU has no driver.
+ */
struct cpuidle_driver *cpuidle_driver_ref(void)
{
struct cpuidle_driver *drv;
return drv;
}
+/**
+ * cpuidle_driver_unref - puts down the refcount for the driver
+ *
+ * Decrement the reference counter of the cpuidle driver associated with
+ * the current CPU.
+ */
void cpuidle_driver_unref(void)
{
struct cpuidle_driver *drv = cpuidle_get_driver();
config ARM_EXYNOS4_BUS_DEVFREQ
bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
- depends on CPU_EXYNOS4210 || CPU_EXYNOS4212 || CPU_EXYNOS4412
+ depends on CPU_EXYNOS4210 || SOC_EXYNOS4212 || SOC_EXYNOS4412
select ARCH_HAS_OPP
select DEVFREQ_GOV_SIMPLE_ONDEMAND
help
To operate with optimal voltages, ASV support is required
(CONFIG_EXYNOS_ASV).
+config ARM_EXYNOS5_BUS_DEVFREQ
+ bool "ARM Exynos5250 Bus DEVFREQ Driver"
+ depends on SOC_EXYNOS5250
+ select ARCH_HAS_OPP
+ select DEVFREQ_GOV_SIMPLE_ONDEMAND
+ help
+ This adds the DEVFREQ driver for Exynos5250 bus interface (vdd_int).
+ It reads PPMU counters of memory controllers and adjusts the
+ operating frequencies and voltages with OPP support.
+
endif # PM_DEVFREQ
obj-$(CONFIG_DEVFREQ_GOV_USERSPACE) += governor_userspace.o
# DEVFREQ Drivers
-obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos4_bus.o
+obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos/
+obj-$(CONFIG_ARM_EXYNOS5_BUS_DEVFREQ) += exynos/
return;
}
+ devfreq_update_status(devfreq, devfreq->previous_freq);
devfreq->stop_polling = true;
mutex_unlock(&devfreq->lock);
cancel_delayed_work_sync(&devfreq->work);
*/
void devfreq_monitor_resume(struct devfreq *devfreq)
{
+ unsigned long freq;
+
mutex_lock(&devfreq->lock);
if (!devfreq->stop_polling)
goto out;
devfreq->profile->polling_ms)
queue_delayed_work(devfreq_wq, &devfreq->work,
msecs_to_jiffies(devfreq->profile->polling_ms));
+
+ devfreq->last_stat_updated = jiffies;
devfreq->stop_polling = false;
+ if (devfreq->profile->get_cur_freq &&
+ !devfreq->profile->get_cur_freq(devfreq->dev.parent, &freq))
+ devfreq->previous_freq = freq;
+
out:
mutex_unlock(&devfreq->lock);
}
/**
* devfreq_remove_device() - Remove devfreq feature from a device.
* @devfreq: the devfreq instance to be removed
+ *
+ * The opposite of devfreq_add_device().
*/
int devfreq_remove_device(struct devfreq *devfreq)
{
/**
* devfreq_suspend_device() - Suspend devfreq of a device.
* @devfreq: the devfreq instance to be suspended
+ *
+ * This function is intended to be called by the pm callbacks
+ * (e.g., runtime_suspend, suspend) of the device driver that
+ * holds the devfreq.
*/
int devfreq_suspend_device(struct devfreq *devfreq)
{
/**
* devfreq_resume_device() - Resume devfreq of a device.
* @devfreq: the devfreq instance to be resumed
+ *
+ * This function is intended to be called by the pm callbacks
+ * (e.g., runtime_resume, resume) of the device driver that
+ * holds the devfreq.
*/
int devfreq_resume_device(struct devfreq *devfreq)
{
{
struct devfreq *devfreq = to_devfreq(dev);
ssize_t len;
- int i, j, err;
+ int i, j;
unsigned int max_state = devfreq->profile->max_state;
- err = devfreq_update_status(devfreq, devfreq->previous_freq);
- if (err)
+ if (!devfreq->stop_polling &&
+ devfreq_update_status(devfreq, devfreq->previous_freq))
return 0;
len = sprintf(buf, " From : To\n");
--- /dev/null
+# Exynos DEVFREQ Drivers
+obj-$(CONFIG_ARM_EXYNOS4_BUS_DEVFREQ) += exynos4_bus.o
+obj-$(CONFIG_ARM_EXYNOS5_BUS_DEVFREQ) += exynos_ppmu.o exynos5_bus.o
--- /dev/null
+/* drivers/devfreq/exynos4210_memorybus.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * EXYNOS4 - Memory/Bus clock frequency scaling support in DEVFREQ framework
+ * This version supports EXYNOS4210 only. This changes bus frequencies
+ * and vddint voltages. Exynos4412/4212 should be able to be supported
+ * with minor modifications.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/mutex.h>
+#include <linux/suspend.h>
+#include <linux/opp.h>
+#include <linux/devfreq.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/module.h>
+
+/* Exynos4 ASV has been in the mailing list, but not upstreamed, yet. */
+#ifdef CONFIG_EXYNOS_ASV
+extern unsigned int exynos_result_of_asv;
+#endif
+
+#include <mach/regs-clock.h>
+
+#include <plat/map-s5p.h>
+
+#define MAX_SAFEVOLT 1200000 /* 1.2V */
+
+enum exynos4_busf_type {
+ TYPE_BUSF_EXYNOS4210,
+ TYPE_BUSF_EXYNOS4x12,
+};
+
+/* Assume that the bus is saturated if the utilization is 40% */
+#define BUS_SATURATION_RATIO 40
+
+enum ppmu_counter {
+ PPMU_PMNCNT0 = 0,
+ PPMU_PMCCNT1,
+ PPMU_PMNCNT2,
+ PPMU_PMNCNT3,
+ PPMU_PMNCNT_MAX,
+};
+struct exynos4_ppmu {
+ void __iomem *hw_base;
+ unsigned int ccnt;
+ unsigned int event;
+ unsigned int count[PPMU_PMNCNT_MAX];
+ bool ccnt_overflow;
+ bool count_overflow[PPMU_PMNCNT_MAX];
+};
+
+enum busclk_level_idx {
+ LV_0 = 0,
+ LV_1,
+ LV_2,
+ LV_3,
+ LV_4,
+ _LV_END
+};
+#define EX4210_LV_MAX LV_2
+#define EX4x12_LV_MAX LV_4
+#define EX4210_LV_NUM (LV_2 + 1)
+#define EX4x12_LV_NUM (LV_4 + 1)
+
+/**
+ * struct busfreq_opp_info - opp information for bus
+ * @rate: Frequency in hertz
+ * @volt: Voltage in microvolts corresponding to this OPP
+ */
+struct busfreq_opp_info {
+ unsigned long rate;
+ unsigned long volt;
+};
+
+struct busfreq_data {
+ enum exynos4_busf_type type;
+ struct device *dev;
+ struct devfreq *devfreq;
+ bool disabled;
+ struct regulator *vdd_int;
+ struct regulator *vdd_mif; /* Exynos4412/4212 only */
+ struct busfreq_opp_info curr_oppinfo;
+ struct exynos4_ppmu dmc[2];
+
+ struct notifier_block pm_notifier;
+ struct mutex lock;
+
+ /* Dividers calculated at boot/probe-time */
+ unsigned int dmc_divtable[_LV_END]; /* DMC0 */
+ unsigned int top_divtable[_LV_END];
+};
+
+struct bus_opp_table {
+ unsigned int idx;
+ unsigned long clk;
+ unsigned long volt;
+};
+
+/* 4210 controls clock of mif and voltage of int */
+static struct bus_opp_table exynos4210_busclk_table[] = {
+ {LV_0, 400000, 1150000},
+ {LV_1, 267000, 1050000},
+ {LV_2, 133000, 1025000},
+ {0, 0, 0},
+};
+
+/*
+ * MIF is the main control knob clock for exynox4x12 MIF/INT
+ * clock and voltage of both mif/int are controlled.
+ */
+static struct bus_opp_table exynos4x12_mifclk_table[] = {
+ {LV_0, 400000, 1100000},
+ {LV_1, 267000, 1000000},
+ {LV_2, 160000, 950000},
+ {LV_3, 133000, 950000},
+ {LV_4, 100000, 950000},
+ {0, 0, 0},
+};
+
+/*
+ * INT is not the control knob of 4x12. LV_x is not meant to represent
+ * the current performance. (MIF does)
+ */
+static struct bus_opp_table exynos4x12_intclk_table[] = {
+ {LV_0, 200000, 1000000},
+ {LV_1, 160000, 950000},
+ {LV_2, 133000, 925000},
+ {LV_3, 100000, 900000},
+ {0, 0, 0},
+};
+
+/* TODO: asv volt definitions are "__initdata"? */
+/* Some chips have different operating voltages */
+static unsigned int exynos4210_asv_volt[][EX4210_LV_NUM] = {
+ {1150000, 1050000, 1050000},
+ {1125000, 1025000, 1025000},
+ {1100000, 1000000, 1000000},
+ {1075000, 975000, 975000},
+ {1050000, 950000, 950000},
+};
+
+static unsigned int exynos4x12_mif_step_50[][EX4x12_LV_NUM] = {
+ /* 400 267 160 133 100 */
+ {1050000, 950000, 900000, 900000, 900000}, /* ASV0 */
+ {1050000, 950000, 900000, 900000, 900000}, /* ASV1 */
+ {1050000, 950000, 900000, 900000, 900000}, /* ASV2 */
+ {1050000, 900000, 900000, 900000, 900000}, /* ASV3 */
+ {1050000, 900000, 900000, 900000, 850000}, /* ASV4 */
+ {1050000, 900000, 900000, 850000, 850000}, /* ASV5 */
+ {1050000, 900000, 850000, 850000, 850000}, /* ASV6 */
+ {1050000, 900000, 850000, 850000, 850000}, /* ASV7 */
+ {1050000, 900000, 850000, 850000, 850000}, /* ASV8 */
+};
+
+static unsigned int exynos4x12_int_volt[][EX4x12_LV_NUM] = {
+ /* 200 160 133 100 */
+ {1000000, 950000, 925000, 900000}, /* ASV0 */
+ {975000, 925000, 925000, 900000}, /* ASV1 */
+ {950000, 925000, 900000, 875000}, /* ASV2 */
+ {950000, 900000, 900000, 875000}, /* ASV3 */
+ {925000, 875000, 875000, 875000}, /* ASV4 */
+ {900000, 850000, 850000, 850000}, /* ASV5 */
+ {900000, 850000, 850000, 850000}, /* ASV6 */
+ {900000, 850000, 850000, 850000}, /* ASV7 */
+ {900000, 850000, 850000, 850000}, /* ASV8 */
+};
+
+/*** Clock Divider Data for Exynos4210 ***/
+static unsigned int exynos4210_clkdiv_dmc0[][8] = {
+ /*
+ * Clock divider value for following
+ * { DIVACP, DIVACP_PCLK, DIVDPHY, DIVDMC, DIVDMCD
+ * DIVDMCP, DIVCOPY2, DIVCORE_TIMERS }
+ */
+
+ /* DMC L0: 400MHz */
+ { 3, 1, 1, 1, 1, 1, 3, 1 },
+ /* DMC L1: 266.7MHz */
+ { 4, 1, 1, 2, 1, 1, 3, 1 },
+ /* DMC L2: 133MHz */
+ { 5, 1, 1, 5, 1, 1, 3, 1 },
+};
+static unsigned int exynos4210_clkdiv_top[][5] = {
+ /*
+ * Clock divider value for following
+ * { DIVACLK200, DIVACLK100, DIVACLK160, DIVACLK133, DIVONENAND }
+ */
+ /* ACLK200 L0: 200MHz */
+ { 3, 7, 4, 5, 1 },
+ /* ACLK200 L1: 160MHz */
+ { 4, 7, 5, 6, 1 },
+ /* ACLK200 L2: 133MHz */
+ { 5, 7, 7, 7, 1 },
+};
+static unsigned int exynos4210_clkdiv_lr_bus[][2] = {
+ /*
+ * Clock divider value for following
+ * { DIVGDL/R, DIVGPL/R }
+ */
+ /* ACLK_GDL/R L1: 200MHz */
+ { 3, 1 },
+ /* ACLK_GDL/R L2: 160MHz */
+ { 4, 1 },
+ /* ACLK_GDL/R L3: 133MHz */
+ { 5, 1 },
+};
+
+/*** Clock Divider Data for Exynos4212/4412 ***/
+static unsigned int exynos4x12_clkdiv_dmc0[][6] = {
+ /*
+ * Clock divider value for following
+ * { DIVACP, DIVACP_PCLK, DIVDPHY, DIVDMC, DIVDMCD
+ * DIVDMCP}
+ */
+
+ /* DMC L0: 400MHz */
+ {3, 1, 1, 1, 1, 1},
+ /* DMC L1: 266.7MHz */
+ {4, 1, 1, 2, 1, 1},
+ /* DMC L2: 160MHz */
+ {5, 1, 1, 4, 1, 1},
+ /* DMC L3: 133MHz */
+ {5, 1, 1, 5, 1, 1},
+ /* DMC L4: 100MHz */
+ {7, 1, 1, 7, 1, 1},
+};
+static unsigned int exynos4x12_clkdiv_dmc1[][6] = {
+ /*
+ * Clock divider value for following
+ * { G2DACP, DIVC2C, DIVC2C_ACLK }
+ */
+
+ /* DMC L0: 400MHz */
+ {3, 1, 1},
+ /* DMC L1: 266.7MHz */
+ {4, 2, 1},
+ /* DMC L2: 160MHz */
+ {5, 4, 1},
+ /* DMC L3: 133MHz */
+ {5, 5, 1},
+ /* DMC L4: 100MHz */
+ {7, 7, 1},
+};
+static unsigned int exynos4x12_clkdiv_top[][5] = {
+ /*
+ * Clock divider value for following
+ * { DIVACLK266_GPS, DIVACLK100, DIVACLK160,
+ DIVACLK133, DIVONENAND }
+ */
+
+ /* ACLK_GDL/R L0: 200MHz */
+ {2, 7, 4, 5, 1},
+ /* ACLK_GDL/R L1: 200MHz */
+ {2, 7, 4, 5, 1},
+ /* ACLK_GDL/R L2: 160MHz */
+ {4, 7, 5, 7, 1},
+ /* ACLK_GDL/R L3: 133MHz */
+ {4, 7, 5, 7, 1},
+ /* ACLK_GDL/R L4: 100MHz */
+ {7, 7, 7, 7, 1},
+};
+static unsigned int exynos4x12_clkdiv_lr_bus[][2] = {
+ /*
+ * Clock divider value for following
+ * { DIVGDL/R, DIVGPL/R }
+ */
+
+ /* ACLK_GDL/R L0: 200MHz */
+ {3, 1},
+ /* ACLK_GDL/R L1: 200MHz */
+ {3, 1},
+ /* ACLK_GDL/R L2: 160MHz */
+ {4, 1},
+ /* ACLK_GDL/R L3: 133MHz */
+ {5, 1},
+ /* ACLK_GDL/R L4: 100MHz */
+ {7, 1},
+};
+static unsigned int exynos4x12_clkdiv_sclkip[][3] = {
+ /*
+ * Clock divider value for following
+ * { DIVMFC, DIVJPEG, DIVFIMC0~3}
+ */
+
+ /* SCLK_MFC: 200MHz */
+ {3, 3, 4},
+ /* SCLK_MFC: 200MHz */
+ {3, 3, 4},
+ /* SCLK_MFC: 160MHz */
+ {4, 4, 5},
+ /* SCLK_MFC: 133MHz */
+ {5, 5, 5},
+ /* SCLK_MFC: 100MHz */
+ {7, 7, 7},
+};
+
+
+static int exynos4210_set_busclk(struct busfreq_data *data,
+ struct busfreq_opp_info *oppi)
+{
+ unsigned int index;
+ unsigned int tmp;
+
+ for (index = LV_0; index < EX4210_LV_NUM; index++)
+ if (oppi->rate == exynos4210_busclk_table[index].clk)
+ break;
+
+ if (index == EX4210_LV_NUM)
+ return -EINVAL;
+
+ /* Change Divider - DMC0 */
+ tmp = data->dmc_divtable[index];
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_DMC0);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC0);
+ } while (tmp & 0x11111111);
+
+ /* Change Divider - TOP */
+ tmp = data->top_divtable[index];
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_TOP);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_TOP);
+ } while (tmp & 0x11111);
+
+ /* Change Divider - LEFTBUS */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_LEFTBUS);
+
+ tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
+
+ tmp |= ((exynos4210_clkdiv_lr_bus[index][0] <<
+ EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
+ (exynos4210_clkdiv_lr_bus[index][1] <<
+ EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_LEFTBUS);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_LEFTBUS);
+ } while (tmp & 0x11);
+
+ /* Change Divider - RIGHTBUS */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_RIGHTBUS);
+
+ tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
+
+ tmp |= ((exynos4210_clkdiv_lr_bus[index][0] <<
+ EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
+ (exynos4210_clkdiv_lr_bus[index][1] <<
+ EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_RIGHTBUS);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_RIGHTBUS);
+ } while (tmp & 0x11);
+
+ return 0;
+}
+
+static int exynos4x12_set_busclk(struct busfreq_data *data,
+ struct busfreq_opp_info *oppi)
+{
+ unsigned int index;
+ unsigned int tmp;
+
+ for (index = LV_0; index < EX4x12_LV_NUM; index++)
+ if (oppi->rate == exynos4x12_mifclk_table[index].clk)
+ break;
+
+ if (index == EX4x12_LV_NUM)
+ return -EINVAL;
+
+ /* Change Divider - DMC0 */
+ tmp = data->dmc_divtable[index];
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_DMC0);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC0);
+ } while (tmp & 0x11111111);
+
+ /* Change Divider - DMC1 */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_DMC1);
+
+ tmp &= ~(EXYNOS4_CLKDIV_DMC1_G2D_ACP_MASK |
+ EXYNOS4_CLKDIV_DMC1_C2C_MASK |
+ EXYNOS4_CLKDIV_DMC1_C2CACLK_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_dmc1[index][0] <<
+ EXYNOS4_CLKDIV_DMC1_G2D_ACP_SHIFT) |
+ (exynos4x12_clkdiv_dmc1[index][1] <<
+ EXYNOS4_CLKDIV_DMC1_C2C_SHIFT) |
+ (exynos4x12_clkdiv_dmc1[index][2] <<
+ EXYNOS4_CLKDIV_DMC1_C2CACLK_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_DMC1);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC1);
+ } while (tmp & 0x111111);
+
+ /* Change Divider - TOP */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_TOP);
+
+ tmp &= ~(EXYNOS4_CLKDIV_TOP_ACLK266_GPS_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK100_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK160_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK133_MASK |
+ EXYNOS4_CLKDIV_TOP_ONENAND_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_top[index][0] <<
+ EXYNOS4_CLKDIV_TOP_ACLK266_GPS_SHIFT) |
+ (exynos4x12_clkdiv_top[index][1] <<
+ EXYNOS4_CLKDIV_TOP_ACLK100_SHIFT) |
+ (exynos4x12_clkdiv_top[index][2] <<
+ EXYNOS4_CLKDIV_TOP_ACLK160_SHIFT) |
+ (exynos4x12_clkdiv_top[index][3] <<
+ EXYNOS4_CLKDIV_TOP_ACLK133_SHIFT) |
+ (exynos4x12_clkdiv_top[index][4] <<
+ EXYNOS4_CLKDIV_TOP_ONENAND_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_TOP);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_TOP);
+ } while (tmp & 0x11111);
+
+ /* Change Divider - LEFTBUS */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_LEFTBUS);
+
+ tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_lr_bus[index][0] <<
+ EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
+ (exynos4x12_clkdiv_lr_bus[index][1] <<
+ EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_LEFTBUS);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_LEFTBUS);
+ } while (tmp & 0x11);
+
+ /* Change Divider - RIGHTBUS */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_RIGHTBUS);
+
+ tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_lr_bus[index][0] <<
+ EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
+ (exynos4x12_clkdiv_lr_bus[index][1] <<
+ EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_RIGHTBUS);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_RIGHTBUS);
+ } while (tmp & 0x11);
+
+ /* Change Divider - MFC */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_MFC);
+
+ tmp &= ~(EXYNOS4_CLKDIV_MFC_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_sclkip[index][0] <<
+ EXYNOS4_CLKDIV_MFC_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_MFC);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_MFC);
+ } while (tmp & 0x1);
+
+ /* Change Divider - JPEG */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_CAM1);
+
+ tmp &= ~(EXYNOS4_CLKDIV_CAM1_JPEG_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_sclkip[index][1] <<
+ EXYNOS4_CLKDIV_CAM1_JPEG_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_CAM1);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_CAM1);
+ } while (tmp & 0x1);
+
+ /* Change Divider - FIMC0~3 */
+ tmp = __raw_readl(EXYNOS4_CLKDIV_CAM);
+
+ tmp &= ~(EXYNOS4_CLKDIV_CAM_FIMC0_MASK | EXYNOS4_CLKDIV_CAM_FIMC1_MASK |
+ EXYNOS4_CLKDIV_CAM_FIMC2_MASK | EXYNOS4_CLKDIV_CAM_FIMC3_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_sclkip[index][2] <<
+ EXYNOS4_CLKDIV_CAM_FIMC0_SHIFT) |
+ (exynos4x12_clkdiv_sclkip[index][2] <<
+ EXYNOS4_CLKDIV_CAM_FIMC1_SHIFT) |
+ (exynos4x12_clkdiv_sclkip[index][2] <<
+ EXYNOS4_CLKDIV_CAM_FIMC2_SHIFT) |
+ (exynos4x12_clkdiv_sclkip[index][2] <<
+ EXYNOS4_CLKDIV_CAM_FIMC3_SHIFT));
+
+ __raw_writel(tmp, EXYNOS4_CLKDIV_CAM);
+
+ do {
+ tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_CAM1);
+ } while (tmp & 0x1111);
+
+ return 0;
+}
+
+
+static void busfreq_mon_reset(struct busfreq_data *data)
+{
+ unsigned int i;
+
+ for (i = 0; i < 2; i++) {
+ void __iomem *ppmu_base = data->dmc[i].hw_base;
+
+ /* Reset PPMU */
+ __raw_writel(0x8000000f, ppmu_base + 0xf010);
+ __raw_writel(0x8000000f, ppmu_base + 0xf050);
+ __raw_writel(0x6, ppmu_base + 0xf000);
+ __raw_writel(0x0, ppmu_base + 0xf100);
+
+ /* Set PPMU Event */
+ data->dmc[i].event = 0x6;
+ __raw_writel(((data->dmc[i].event << 12) | 0x1),
+ ppmu_base + 0xfc);
+
+ /* Start PPMU */
+ __raw_writel(0x1, ppmu_base + 0xf000);
+ }
+}
+
+static void exynos4_read_ppmu(struct busfreq_data *data)
+{
+ int i, j;
+
+ for (i = 0; i < 2; i++) {
+ void __iomem *ppmu_base = data->dmc[i].hw_base;
+ u32 overflow;
+
+ /* Stop PPMU */
+ __raw_writel(0x0, ppmu_base + 0xf000);
+
+ /* Update local data from PPMU */
+ overflow = __raw_readl(ppmu_base + 0xf050);
+
+ data->dmc[i].ccnt = __raw_readl(ppmu_base + 0xf100);
+ data->dmc[i].ccnt_overflow = overflow & (1 << 31);
+
+ for (j = 0; j < PPMU_PMNCNT_MAX; j++) {
+ data->dmc[i].count[j] = __raw_readl(
+ ppmu_base + (0xf110 + (0x10 * j)));
+ data->dmc[i].count_overflow[j] = overflow & (1 << j);
+ }
+ }
+
+ busfreq_mon_reset(data);
+}
+
+static int exynos4x12_get_intspec(unsigned long mifclk)
+{
+ int i = 0;
+
+ while (exynos4x12_intclk_table[i].clk) {
+ if (exynos4x12_intclk_table[i].clk <= mifclk)
+ return i;
+ i++;
+ }
+
+ return -EINVAL;
+}
+
+static int exynos4_bus_setvolt(struct busfreq_data *data,
+ struct busfreq_opp_info *oppi,
+ struct busfreq_opp_info *oldoppi)
+{
+ int err = 0, tmp;
+ unsigned long volt = oppi->volt;
+
+ switch (data->type) {
+ case TYPE_BUSF_EXYNOS4210:
+ /* OPP represents DMC clock + INT voltage */
+ err = regulator_set_voltage(data->vdd_int, volt,
+ MAX_SAFEVOLT);
+ break;
+ case TYPE_BUSF_EXYNOS4x12:
+ /* OPP represents MIF clock + MIF voltage */
+ err = regulator_set_voltage(data->vdd_mif, volt,
+ MAX_SAFEVOLT);
+ if (err)
+ break;
+
+ tmp = exynos4x12_get_intspec(oppi->rate);
+ if (tmp < 0) {
+ err = tmp;
+ regulator_set_voltage(data->vdd_mif,
+ oldoppi->volt,
+ MAX_SAFEVOLT);
+ break;
+ }
+ err = regulator_set_voltage(data->vdd_int,
+ exynos4x12_intclk_table[tmp].volt,
+ MAX_SAFEVOLT);
+ /* Try to recover */
+ if (err)
+ regulator_set_voltage(data->vdd_mif,
+ oldoppi->volt,
+ MAX_SAFEVOLT);
+ break;
+ default:
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static int exynos4_bus_target(struct device *dev, unsigned long *_freq,
+ u32 flags)
+{
+ int err = 0;
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data *data = platform_get_drvdata(pdev);
+ struct opp *opp;
+ unsigned long freq;
+ unsigned long old_freq = data->curr_oppinfo.rate;
+ struct busfreq_opp_info new_oppinfo;
+
+ rcu_read_lock();
+ opp = devfreq_recommended_opp(dev, _freq, flags);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ return PTR_ERR(opp);
+ }
+ new_oppinfo.rate = opp_get_freq(opp);
+ new_oppinfo.volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+ freq = new_oppinfo.rate;
+
+ if (old_freq == freq)
+ return 0;
+
+ dev_dbg(dev, "targeting %lukHz %luuV\n", freq, new_oppinfo.volt);
+
+ mutex_lock(&data->lock);
+
+ if (data->disabled)
+ goto out;
+
+ if (old_freq < freq)
+ err = exynos4_bus_setvolt(data, &new_oppinfo,
+ &data->curr_oppinfo);
+ if (err)
+ goto out;
+
+ if (old_freq != freq) {
+ switch (data->type) {
+ case TYPE_BUSF_EXYNOS4210:
+ err = exynos4210_set_busclk(data, &new_oppinfo);
+ break;
+ case TYPE_BUSF_EXYNOS4x12:
+ err = exynos4x12_set_busclk(data, &new_oppinfo);
+ break;
+ default:
+ err = -EINVAL;
+ }
+ }
+ if (err)
+ goto out;
+
+ if (old_freq > freq)
+ err = exynos4_bus_setvolt(data, &new_oppinfo,
+ &data->curr_oppinfo);
+ if (err)
+ goto out;
+
+ data->curr_oppinfo = new_oppinfo;
+out:
+ mutex_unlock(&data->lock);
+ return err;
+}
+
+static int exynos4_get_busier_dmc(struct busfreq_data *data)
+{
+ u64 p0 = data->dmc[0].count[0];
+ u64 p1 = data->dmc[1].count[0];
+
+ p0 *= data->dmc[1].ccnt;
+ p1 *= data->dmc[0].ccnt;
+
+ if (data->dmc[1].ccnt == 0)
+ return 0;
+
+ if (p0 > p1)
+ return 0;
+ return 1;
+}
+
+static int exynos4_bus_get_dev_status(struct device *dev,
+ struct devfreq_dev_status *stat)
+{
+ struct busfreq_data *data = dev_get_drvdata(dev);
+ int busier_dmc;
+ int cycles_x2 = 2; /* 2 x cycles */
+ void __iomem *addr;
+ u32 timing;
+ u32 memctrl;
+
+ exynos4_read_ppmu(data);
+ busier_dmc = exynos4_get_busier_dmc(data);
+ stat->current_frequency = data->curr_oppinfo.rate;
+
+ if (busier_dmc)
+ addr = S5P_VA_DMC1;
+ else
+ addr = S5P_VA_DMC0;
+
+ memctrl = __raw_readl(addr + 0x04); /* one of DDR2/3/LPDDR2 */
+ timing = __raw_readl(addr + 0x38); /* CL or WL/RL values */
+
+ switch ((memctrl >> 8) & 0xf) {
+ case 0x4: /* DDR2 */
+ cycles_x2 = ((timing >> 16) & 0xf) * 2;
+ break;
+ case 0x5: /* LPDDR2 */
+ case 0x6: /* DDR3 */
+ cycles_x2 = ((timing >> 8) & 0xf) + ((timing >> 0) & 0xf);
+ break;
+ default:
+ pr_err("%s: Unknown Memory Type(%d).\n", __func__,
+ (memctrl >> 8) & 0xf);
+ return -EINVAL;
+ }
+
+ /* Number of cycles spent on memory access */
+ stat->busy_time = data->dmc[busier_dmc].count[0] / 2 * (cycles_x2 + 2);
+ stat->busy_time *= 100 / BUS_SATURATION_RATIO;
+ stat->total_time = data->dmc[busier_dmc].ccnt;
+
+ /* If the counters have overflown, retry */
+ if (data->dmc[busier_dmc].ccnt_overflow ||
+ data->dmc[busier_dmc].count_overflow[0])
+ return -EAGAIN;
+
+ return 0;
+}
+
+static void exynos4_bus_exit(struct device *dev)
+{
+ struct busfreq_data *data = dev_get_drvdata(dev);
+
+ devfreq_unregister_opp_notifier(dev, data->devfreq);
+}
+
+static struct devfreq_dev_profile exynos4_devfreq_profile = {
+ .initial_freq = 400000,
+ .polling_ms = 50,
+ .target = exynos4_bus_target,
+ .get_dev_status = exynos4_bus_get_dev_status,
+ .exit = exynos4_bus_exit,
+};
+
+static int exynos4210_init_tables(struct busfreq_data *data)
+{
+ u32 tmp;
+ int mgrp;
+ int i, err = 0;
+
+ tmp = __raw_readl(EXYNOS4_CLKDIV_DMC0);
+ for (i = LV_0; i < EX4210_LV_NUM; i++) {
+ tmp &= ~(EXYNOS4_CLKDIV_DMC0_ACP_MASK |
+ EXYNOS4_CLKDIV_DMC0_ACPPCLK_MASK |
+ EXYNOS4_CLKDIV_DMC0_DPHY_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMC_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMCD_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMCP_MASK |
+ EXYNOS4_CLKDIV_DMC0_COPY2_MASK |
+ EXYNOS4_CLKDIV_DMC0_CORETI_MASK);
+
+ tmp |= ((exynos4210_clkdiv_dmc0[i][0] <<
+ EXYNOS4_CLKDIV_DMC0_ACP_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][1] <<
+ EXYNOS4_CLKDIV_DMC0_ACPPCLK_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][2] <<
+ EXYNOS4_CLKDIV_DMC0_DPHY_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][3] <<
+ EXYNOS4_CLKDIV_DMC0_DMC_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][4] <<
+ EXYNOS4_CLKDIV_DMC0_DMCD_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][5] <<
+ EXYNOS4_CLKDIV_DMC0_DMCP_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][6] <<
+ EXYNOS4_CLKDIV_DMC0_COPY2_SHIFT) |
+ (exynos4210_clkdiv_dmc0[i][7] <<
+ EXYNOS4_CLKDIV_DMC0_CORETI_SHIFT));
+
+ data->dmc_divtable[i] = tmp;
+ }
+
+ tmp = __raw_readl(EXYNOS4_CLKDIV_TOP);
+ for (i = LV_0; i < EX4210_LV_NUM; i++) {
+ tmp &= ~(EXYNOS4_CLKDIV_TOP_ACLK200_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK100_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK160_MASK |
+ EXYNOS4_CLKDIV_TOP_ACLK133_MASK |
+ EXYNOS4_CLKDIV_TOP_ONENAND_MASK);
+
+ tmp |= ((exynos4210_clkdiv_top[i][0] <<
+ EXYNOS4_CLKDIV_TOP_ACLK200_SHIFT) |
+ (exynos4210_clkdiv_top[i][1] <<
+ EXYNOS4_CLKDIV_TOP_ACLK100_SHIFT) |
+ (exynos4210_clkdiv_top[i][2] <<
+ EXYNOS4_CLKDIV_TOP_ACLK160_SHIFT) |
+ (exynos4210_clkdiv_top[i][3] <<
+ EXYNOS4_CLKDIV_TOP_ACLK133_SHIFT) |
+ (exynos4210_clkdiv_top[i][4] <<
+ EXYNOS4_CLKDIV_TOP_ONENAND_SHIFT));
+
+ data->top_divtable[i] = tmp;
+ }
+
+#ifdef CONFIG_EXYNOS_ASV
+ tmp = exynos4_result_of_asv;
+#else
+ tmp = 0; /* Max voltages for the reliability of the unknown */
+#endif
+
+ pr_debug("ASV Group of Exynos4 is %d\n", tmp);
+ /* Use merged grouping for voltage */
+ switch (tmp) {
+ case 0:
+ mgrp = 0;
+ break;
+ case 1:
+ case 2:
+ mgrp = 1;
+ break;
+ case 3:
+ case 4:
+ mgrp = 2;
+ break;
+ case 5:
+ case 6:
+ mgrp = 3;
+ break;
+ case 7:
+ mgrp = 4;
+ break;
+ default:
+ pr_warn("Unknown ASV Group. Use max voltage.\n");
+ mgrp = 0;
+ }
+
+ for (i = LV_0; i < EX4210_LV_NUM; i++)
+ exynos4210_busclk_table[i].volt = exynos4210_asv_volt[mgrp][i];
+
+ for (i = LV_0; i < EX4210_LV_NUM; i++) {
+ err = opp_add(data->dev, exynos4210_busclk_table[i].clk,
+ exynos4210_busclk_table[i].volt);
+ if (err) {
+ dev_err(data->dev, "Cannot add opp entries.\n");
+ return err;
+ }
+ }
+
+
+ return 0;
+}
+
+static int exynos4x12_init_tables(struct busfreq_data *data)
+{
+ unsigned int i;
+ unsigned int tmp;
+ int ret;
+
+ /* Enable pause function for DREX2 DVFS */
+ tmp = __raw_readl(EXYNOS4_DMC_PAUSE_CTRL);
+ tmp |= EXYNOS4_DMC_PAUSE_ENABLE;
+ __raw_writel(tmp, EXYNOS4_DMC_PAUSE_CTRL);
+
+ tmp = __raw_readl(EXYNOS4_CLKDIV_DMC0);
+
+ for (i = 0; i < EX4x12_LV_NUM; i++) {
+ tmp &= ~(EXYNOS4_CLKDIV_DMC0_ACP_MASK |
+ EXYNOS4_CLKDIV_DMC0_ACPPCLK_MASK |
+ EXYNOS4_CLKDIV_DMC0_DPHY_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMC_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMCD_MASK |
+ EXYNOS4_CLKDIV_DMC0_DMCP_MASK);
+
+ tmp |= ((exynos4x12_clkdiv_dmc0[i][0] <<
+ EXYNOS4_CLKDIV_DMC0_ACP_SHIFT) |
+ (exynos4x12_clkdiv_dmc0[i][1] <<
+ EXYNOS4_CLKDIV_DMC0_ACPPCLK_SHIFT) |
+ (exynos4x12_clkdiv_dmc0[i][2] <<
+ EXYNOS4_CLKDIV_DMC0_DPHY_SHIFT) |
+ (exynos4x12_clkdiv_dmc0[i][3] <<
+ EXYNOS4_CLKDIV_DMC0_DMC_SHIFT) |
+ (exynos4x12_clkdiv_dmc0[i][4] <<
+ EXYNOS4_CLKDIV_DMC0_DMCD_SHIFT) |
+ (exynos4x12_clkdiv_dmc0[i][5] <<
+ EXYNOS4_CLKDIV_DMC0_DMCP_SHIFT));
+
+ data->dmc_divtable[i] = tmp;
+ }
+
+#ifdef CONFIG_EXYNOS_ASV
+ tmp = exynos4_result_of_asv;
+#else
+ tmp = 0; /* Max voltages for the reliability of the unknown */
+#endif
+
+ if (tmp > 8)
+ tmp = 0;
+ pr_debug("ASV Group of Exynos4x12 is %d\n", tmp);
+
+ for (i = 0; i < EX4x12_LV_NUM; i++) {
+ exynos4x12_mifclk_table[i].volt =
+ exynos4x12_mif_step_50[tmp][i];
+ exynos4x12_intclk_table[i].volt =
+ exynos4x12_int_volt[tmp][i];
+ }
+
+ for (i = 0; i < EX4x12_LV_NUM; i++) {
+ ret = opp_add(data->dev, exynos4x12_mifclk_table[i].clk,
+ exynos4x12_mifclk_table[i].volt);
+ if (ret) {
+ dev_err(data->dev, "Fail to add opp entries.\n");
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int exynos4_busfreq_pm_notifier_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct busfreq_data *data = container_of(this, struct busfreq_data,
+ pm_notifier);
+ struct opp *opp;
+ struct busfreq_opp_info new_oppinfo;
+ unsigned long maxfreq = ULONG_MAX;
+ int err = 0;
+
+ switch (event) {
+ case PM_SUSPEND_PREPARE:
+ /* Set Fastest and Deactivate DVFS */
+ mutex_lock(&data->lock);
+
+ data->disabled = true;
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(data->dev, &maxfreq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(data->dev, "%s: unable to find a min freq\n",
+ __func__);
+ mutex_unlock(&data->lock);
+ return PTR_ERR(opp);
+ }
+ new_oppinfo.rate = opp_get_freq(opp);
+ new_oppinfo.volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ err = exynos4_bus_setvolt(data, &new_oppinfo,
+ &data->curr_oppinfo);
+ if (err)
+ goto unlock;
+
+ switch (data->type) {
+ case TYPE_BUSF_EXYNOS4210:
+ err = exynos4210_set_busclk(data, &new_oppinfo);
+ break;
+ case TYPE_BUSF_EXYNOS4x12:
+ err = exynos4x12_set_busclk(data, &new_oppinfo);
+ break;
+ default:
+ err = -EINVAL;
+ }
+ if (err)
+ goto unlock;
+
+ data->curr_oppinfo = new_oppinfo;
+unlock:
+ mutex_unlock(&data->lock);
+ if (err)
+ return err;
+ return NOTIFY_OK;
+ case PM_POST_RESTORE:
+ case PM_POST_SUSPEND:
+ /* Reactivate */
+ mutex_lock(&data->lock);
+ data->disabled = false;
+ mutex_unlock(&data->lock);
+ return NOTIFY_OK;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int exynos4_busfreq_probe(struct platform_device *pdev)
+{
+ struct busfreq_data *data;
+ struct opp *opp;
+ struct device *dev = &pdev->dev;
+ int err = 0;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data), GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(dev, "Cannot allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ data->type = pdev->id_entry->driver_data;
+ data->dmc[0].hw_base = S5P_VA_DMC0;
+ data->dmc[1].hw_base = S5P_VA_DMC1;
+ data->pm_notifier.notifier_call = exynos4_busfreq_pm_notifier_event;
+ data->dev = dev;
+ mutex_init(&data->lock);
+
+ switch (data->type) {
+ case TYPE_BUSF_EXYNOS4210:
+ err = exynos4210_init_tables(data);
+ break;
+ case TYPE_BUSF_EXYNOS4x12:
+ err = exynos4x12_init_tables(data);
+ break;
+ default:
+ dev_err(dev, "Cannot determine the device id %d\n", data->type);
+ err = -EINVAL;
+ }
+ if (err)
+ return err;
+
+ data->vdd_int = devm_regulator_get(dev, "vdd_int");
+ if (IS_ERR(data->vdd_int)) {
+ dev_err(dev, "Cannot get the regulator \"vdd_int\"\n");
+ return PTR_ERR(data->vdd_int);
+ }
+ if (data->type == TYPE_BUSF_EXYNOS4x12) {
+ data->vdd_mif = devm_regulator_get(dev, "vdd_mif");
+ if (IS_ERR(data->vdd_mif)) {
+ dev_err(dev, "Cannot get the regulator \"vdd_mif\"\n");
+ return PTR_ERR(data->vdd_mif);
+ }
+ }
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(dev, &exynos4_devfreq_profile.initial_freq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(dev, "Invalid initial frequency %lu kHz.\n",
+ exynos4_devfreq_profile.initial_freq);
+ return PTR_ERR(opp);
+ }
+ data->curr_oppinfo.rate = opp_get_freq(opp);
+ data->curr_oppinfo.volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ platform_set_drvdata(pdev, data);
+
+ busfreq_mon_reset(data);
+
+ data->devfreq = devfreq_add_device(dev, &exynos4_devfreq_profile,
+ "simple_ondemand", NULL);
+ if (IS_ERR(data->devfreq))
+ return PTR_ERR(data->devfreq);
+
+ devfreq_register_opp_notifier(dev, data->devfreq);
+
+ err = register_pm_notifier(&data->pm_notifier);
+ if (err) {
+ dev_err(dev, "Failed to setup pm notifier\n");
+ devfreq_remove_device(data->devfreq);
+ return err;
+ }
+
+ return 0;
+}
+
+static int exynos4_busfreq_remove(struct platform_device *pdev)
+{
+ struct busfreq_data *data = platform_get_drvdata(pdev);
+
+ unregister_pm_notifier(&data->pm_notifier);
+ devfreq_remove_device(data->devfreq);
+
+ return 0;
+}
+
+static int exynos4_busfreq_resume(struct device *dev)
+{
+ struct busfreq_data *data = dev_get_drvdata(dev);
+
+ busfreq_mon_reset(data);
+ return 0;
+}
+
+static const struct dev_pm_ops exynos4_busfreq_pm = {
+ .resume = exynos4_busfreq_resume,
+};
+
+static const struct platform_device_id exynos4_busfreq_id[] = {
+ { "exynos4210-busfreq", TYPE_BUSF_EXYNOS4210 },
+ { "exynos4412-busfreq", TYPE_BUSF_EXYNOS4x12 },
+ { "exynos4212-busfreq", TYPE_BUSF_EXYNOS4x12 },
+ { },
+};
+
+static struct platform_driver exynos4_busfreq_driver = {
+ .probe = exynos4_busfreq_probe,
+ .remove = exynos4_busfreq_remove,
+ .id_table = exynos4_busfreq_id,
+ .driver = {
+ .name = "exynos4-busfreq",
+ .owner = THIS_MODULE,
+ .pm = &exynos4_busfreq_pm,
+ },
+};
+
+static int __init exynos4_busfreq_init(void)
+{
+ return platform_driver_register(&exynos4_busfreq_driver);
+}
+late_initcall(exynos4_busfreq_init);
+
+static void __exit exynos4_busfreq_exit(void)
+{
+ platform_driver_unregister(&exynos4_busfreq_driver);
+}
+module_exit(exynos4_busfreq_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("EXYNOS4 busfreq driver with devfreq framework");
+MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS5 INT clock frequency scaling support using DEVFREQ framework
+ * Based on work done by Jonghwan Choi <jhbird.choi@samsung.com>
+ * Support for only EXYNOS5250 is present.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/devfreq.h>
+#include <linux/io.h>
+#include <linux/opp.h>
+#include <linux/slab.h>
+#include <linux/suspend.h>
+#include <linux/opp.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/pm_qos.h>
+#include <linux/regulator/consumer.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+#include "exynos_ppmu.h"
+
+#define MAX_SAFEVOLT 1100000 /* 1.10V */
+/* Assume that the bus is saturated if the utilization is 25% */
+#define INT_BUS_SATURATION_RATIO 25
+
+enum int_level_idx {
+ LV_0,
+ LV_1,
+ LV_2,
+ LV_3,
+ LV_4,
+ _LV_END
+};
+
+enum exynos_ppmu_list {
+ PPMU_RIGHT,
+ PPMU_END,
+};
+
+struct busfreq_data_int {
+ struct device *dev;
+ struct devfreq *devfreq;
+ struct regulator *vdd_int;
+ struct exynos_ppmu ppmu[PPMU_END];
+ unsigned long curr_freq;
+ bool disabled;
+
+ struct notifier_block pm_notifier;
+ struct mutex lock;
+ struct pm_qos_request int_req;
+ struct clk *int_clk;
+};
+
+struct int_bus_opp_table {
+ unsigned int idx;
+ unsigned long clk;
+ unsigned long volt;
+};
+
+static struct int_bus_opp_table exynos5_int_opp_table[] = {
+ {LV_0, 266000, 1025000},
+ {LV_1, 200000, 1025000},
+ {LV_2, 160000, 1025000},
+ {LV_3, 133000, 1025000},
+ {LV_4, 100000, 1025000},
+ {0, 0, 0},
+};
+
+static void busfreq_mon_reset(struct busfreq_data_int *data)
+{
+ unsigned int i;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ void __iomem *ppmu_base = data->ppmu[i].hw_base;
+
+ /* Reset the performance and cycle counters */
+ exynos_ppmu_reset(ppmu_base);
+
+ /* Setup count registers to monitor read/write transactions */
+ data->ppmu[i].event[PPMU_PMNCNT3] = RDWR_DATA_COUNT;
+ exynos_ppmu_setevent(ppmu_base, PPMU_PMNCNT3,
+ data->ppmu[i].event[PPMU_PMNCNT3]);
+
+ exynos_ppmu_start(ppmu_base);
+ }
+}
+
+static void exynos5_read_ppmu(struct busfreq_data_int *data)
+{
+ int i, j;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ void __iomem *ppmu_base = data->ppmu[i].hw_base;
+
+ exynos_ppmu_stop(ppmu_base);
+
+ /* Update local data from PPMU */
+ data->ppmu[i].ccnt = __raw_readl(ppmu_base + PPMU_CCNT);
+
+ for (j = PPMU_PMNCNT0; j < PPMU_PMNCNT_MAX; j++) {
+ if (data->ppmu[i].event[j] == 0)
+ data->ppmu[i].count[j] = 0;
+ else
+ data->ppmu[i].count[j] =
+ exynos_ppmu_read(ppmu_base, j);
+ }
+ }
+
+ busfreq_mon_reset(data);
+}
+
+static int exynos5_int_setvolt(struct busfreq_data_int *data,
+ unsigned long volt)
+{
+ return regulator_set_voltage(data->vdd_int, volt, MAX_SAFEVOLT);
+}
+
+static int exynos5_busfreq_int_target(struct device *dev, unsigned long *_freq,
+ u32 flags)
+{
+ int err = 0;
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+ struct opp *opp;
+ unsigned long old_freq, freq;
+ unsigned long volt;
+
+ rcu_read_lock();
+ opp = devfreq_recommended_opp(dev, _freq, flags);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(dev, "%s: Invalid OPP.\n", __func__);
+ return PTR_ERR(opp);
+ }
+
+ freq = opp_get_freq(opp);
+ volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ old_freq = data->curr_freq;
+
+ if (old_freq == freq)
+ return 0;
+
+ dev_dbg(dev, "targetting %lukHz %luuV\n", freq, volt);
+
+ mutex_lock(&data->lock);
+
+ if (data->disabled)
+ goto out;
+
+ if (freq > exynos5_int_opp_table[0].clk)
+ pm_qos_update_request(&data->int_req, freq * 16 / 1000);
+ else
+ pm_qos_update_request(&data->int_req, -1);
+
+ if (old_freq < freq)
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto out;
+
+ err = clk_set_rate(data->int_clk, freq * 1000);
+
+ if (err)
+ goto out;
+
+ if (old_freq > freq)
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto out;
+
+ data->curr_freq = freq;
+out:
+ mutex_unlock(&data->lock);
+ return err;
+}
+
+static int exynos5_get_busier_dmc(struct busfreq_data_int *data)
+{
+ int i, j;
+ int busy = 0;
+ unsigned int temp = 0;
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ for (j = PPMU_PMNCNT0; j < PPMU_PMNCNT_MAX; j++) {
+ if (data->ppmu[i].count[j] > temp) {
+ temp = data->ppmu[i].count[j];
+ busy = i;
+ }
+ }
+ }
+
+ return busy;
+}
+
+static int exynos5_int_get_dev_status(struct device *dev,
+ struct devfreq_dev_status *stat)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+ int busier_dmc;
+
+ exynos5_read_ppmu(data);
+ busier_dmc = exynos5_get_busier_dmc(data);
+
+ stat->current_frequency = data->curr_freq;
+
+ /* Number of cycles spent on memory access */
+ stat->busy_time = data->ppmu[busier_dmc].count[PPMU_PMNCNT3];
+ stat->busy_time *= 100 / INT_BUS_SATURATION_RATIO;
+ stat->total_time = data->ppmu[busier_dmc].ccnt;
+
+ return 0;
+}
+static void exynos5_int_exit(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ devfreq_unregister_opp_notifier(dev, data->devfreq);
+}
+
+static struct devfreq_dev_profile exynos5_devfreq_int_profile = {
+ .initial_freq = 160000,
+ .polling_ms = 100,
+ .target = exynos5_busfreq_int_target,
+ .get_dev_status = exynos5_int_get_dev_status,
+ .exit = exynos5_int_exit,
+};
+
+static int exynos5250_init_int_tables(struct busfreq_data_int *data)
+{
+ int i, err = 0;
+
+ for (i = LV_0; i < _LV_END; i++) {
+ err = opp_add(data->dev, exynos5_int_opp_table[i].clk,
+ exynos5_int_opp_table[i].volt);
+ if (err) {
+ dev_err(data->dev, "Cannot add opp entries.\n");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int exynos5_busfreq_int_pm_notifier_event(struct notifier_block *this,
+ unsigned long event, void *ptr)
+{
+ struct busfreq_data_int *data = container_of(this,
+ struct busfreq_data_int, pm_notifier);
+ struct opp *opp;
+ unsigned long maxfreq = ULONG_MAX;
+ unsigned long freq;
+ unsigned long volt;
+ int err = 0;
+
+ switch (event) {
+ case PM_SUSPEND_PREPARE:
+ /* Set Fastest and Deactivate DVFS */
+ mutex_lock(&data->lock);
+
+ data->disabled = true;
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(data->dev, &maxfreq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ err = PTR_ERR(opp);
+ goto unlock;
+ }
+ freq = opp_get_freq(opp);
+ volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+
+ err = exynos5_int_setvolt(data, volt);
+ if (err)
+ goto unlock;
+
+ err = clk_set_rate(data->int_clk, freq * 1000);
+
+ if (err)
+ goto unlock;
+
+ data->curr_freq = freq;
+unlock:
+ mutex_unlock(&data->lock);
+ if (err)
+ return NOTIFY_BAD;
+ return NOTIFY_OK;
+ case PM_POST_RESTORE:
+ case PM_POST_SUSPEND:
+ /* Reactivate */
+ mutex_lock(&data->lock);
+ data->disabled = false;
+ mutex_unlock(&data->lock);
+ return NOTIFY_OK;
+ }
+
+ return NOTIFY_DONE;
+}
+
+static int exynos5_busfreq_int_probe(struct platform_device *pdev)
+{
+ struct busfreq_data_int *data;
+ struct opp *opp;
+ struct device *dev = &pdev->dev;
+ struct device_node *np;
+ unsigned long initial_freq;
+ unsigned long initial_volt;
+ int err = 0;
+ int i;
+
+ data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data_int),
+ GFP_KERNEL);
+ if (data == NULL) {
+ dev_err(dev, "Cannot allocate memory.\n");
+ return -ENOMEM;
+ }
+
+ np = of_find_compatible_node(NULL, NULL, "samsung,exynos5250-ppmu");
+ if (np == NULL) {
+ pr_err("Unable to find PPMU node\n");
+ return -ENOENT;
+ }
+
+ for (i = PPMU_RIGHT; i < PPMU_END; i++) {
+ /* map PPMU memory region */
+ data->ppmu[i].hw_base = of_iomap(np, i);
+ if (data->ppmu[i].hw_base == NULL) {
+ dev_err(&pdev->dev, "failed to map memory region\n");
+ return -ENOMEM;
+ }
+ }
+ data->pm_notifier.notifier_call = exynos5_busfreq_int_pm_notifier_event;
+ data->dev = dev;
+ mutex_init(&data->lock);
+
+ err = exynos5250_init_int_tables(data);
+ if (err)
+ goto err_regulator;
+
+ data->vdd_int = regulator_get(dev, "vdd_int");
+ if (IS_ERR(data->vdd_int)) {
+ dev_err(dev, "Cannot get the regulator \"vdd_int\"\n");
+ err = PTR_ERR(data->vdd_int);
+ goto err_regulator;
+ }
+
+ data->int_clk = clk_get(dev, "int_clk");
+ if (IS_ERR(data->int_clk)) {
+ dev_err(dev, "Cannot get clock \"int_clk\"\n");
+ err = PTR_ERR(data->int_clk);
+ goto err_clock;
+ }
+
+ rcu_read_lock();
+ opp = opp_find_freq_floor(dev,
+ &exynos5_devfreq_int_profile.initial_freq);
+ if (IS_ERR(opp)) {
+ rcu_read_unlock();
+ dev_err(dev, "Invalid initial frequency %lu kHz.\n",
+ exynos5_devfreq_int_profile.initial_freq);
+ err = PTR_ERR(opp);
+ goto err_opp_add;
+ }
+ initial_freq = opp_get_freq(opp);
+ initial_volt = opp_get_voltage(opp);
+ rcu_read_unlock();
+ data->curr_freq = initial_freq;
+
+ err = clk_set_rate(data->int_clk, initial_freq * 1000);
+ if (err) {
+ dev_err(dev, "Failed to set initial frequency\n");
+ goto err_opp_add;
+ }
+
+ err = exynos5_int_setvolt(data, initial_volt);
+ if (err)
+ goto err_opp_add;
+
+ platform_set_drvdata(pdev, data);
+
+ busfreq_mon_reset(data);
+
+ data->devfreq = devfreq_add_device(dev, &exynos5_devfreq_int_profile,
+ "simple_ondemand", NULL);
+
+ if (IS_ERR(data->devfreq)) {
+ err = PTR_ERR(data->devfreq);
+ goto err_devfreq_add;
+ }
+
+ devfreq_register_opp_notifier(dev, data->devfreq);
+
+ err = register_pm_notifier(&data->pm_notifier);
+ if (err) {
+ dev_err(dev, "Failed to setup pm notifier\n");
+ goto err_devfreq_add;
+ }
+
+ /* TODO: Add a new QOS class for int/mif bus */
+ pm_qos_add_request(&data->int_req, PM_QOS_NETWORK_THROUGHPUT, -1);
+
+ return 0;
+
+err_devfreq_add:
+ devfreq_remove_device(data->devfreq);
+ platform_set_drvdata(pdev, NULL);
+err_opp_add:
+ clk_put(data->int_clk);
+err_clock:
+ regulator_put(data->vdd_int);
+err_regulator:
+ return err;
+}
+
+static int exynos5_busfreq_int_remove(struct platform_device *pdev)
+{
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ pm_qos_remove_request(&data->int_req);
+ unregister_pm_notifier(&data->pm_notifier);
+ devfreq_remove_device(data->devfreq);
+ regulator_put(data->vdd_int);
+ clk_put(data->int_clk);
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+static int exynos5_busfreq_int_resume(struct device *dev)
+{
+ struct platform_device *pdev = container_of(dev, struct platform_device,
+ dev);
+ struct busfreq_data_int *data = platform_get_drvdata(pdev);
+
+ busfreq_mon_reset(data);
+ return 0;
+}
+
+static const struct dev_pm_ops exynos5_busfreq_int_pm = {
+ .resume = exynos5_busfreq_int_resume,
+};
+
+/* platform device pointer for exynos5 devfreq device. */
+static struct platform_device *exynos5_devfreq_pdev;
+
+static struct platform_driver exynos5_busfreq_int_driver = {
+ .probe = exynos5_busfreq_int_probe,
+ .remove = exynos5_busfreq_int_remove,
+ .driver = {
+ .name = "exynos5-bus-int",
+ .owner = THIS_MODULE,
+ .pm = &exynos5_busfreq_int_pm,
+ },
+};
+
+static int __init exynos5_busfreq_int_init(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&exynos5_busfreq_int_driver);
+ if (ret < 0)
+ goto out;
+
+ exynos5_devfreq_pdev =
+ platform_device_register_simple("exynos5-bus-int", -1, NULL, 0);
+ if (IS_ERR_OR_NULL(exynos5_devfreq_pdev)) {
+ ret = PTR_ERR(exynos5_devfreq_pdev);
+ goto out1;
+ }
+
+ return 0;
+out1:
+ platform_driver_unregister(&exynos5_busfreq_int_driver);
+out:
+ return ret;
+}
+late_initcall(exynos5_busfreq_int_init);
+
+static void __exit exynos5_busfreq_int_exit(void)
+{
+ platform_device_unregister(exynos5_devfreq_pdev);
+ platform_driver_unregister(&exynos5_busfreq_int_driver);
+}
+module_exit(exynos5_busfreq_int_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("EXYNOS5 busfreq driver with devfreq framework");
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS - PPMU support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/io.h>
+
+#include "exynos_ppmu.h"
+
+void exynos_ppmu_reset(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_CYCLE_RESET | PPMU_COUNTER_RESET, ppmu_base);
+ __raw_writel(PPMU_ENABLE_CYCLE |
+ PPMU_ENABLE_COUNT0 |
+ PPMU_ENABLE_COUNT1 |
+ PPMU_ENABLE_COUNT2 |
+ PPMU_ENABLE_COUNT3,
+ ppmu_base + PPMU_CNTENS);
+}
+
+void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
+ unsigned int evt)
+{
+ __raw_writel(evt, ppmu_base + PPMU_BEVTSEL(ch));
+}
+
+void exynos_ppmu_start(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_ENABLE, ppmu_base);
+}
+
+void exynos_ppmu_stop(void __iomem *ppmu_base)
+{
+ __raw_writel(PPMU_DISABLE, ppmu_base);
+}
+
+unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch)
+{
+ unsigned int total;
+
+ if (ch == PPMU_PMNCNT3)
+ total = ((__raw_readl(ppmu_base + PMCNT_OFFSET(ch)) << 8) |
+ __raw_readl(ppmu_base + PMCNT_OFFSET(ch + 1)));
+ else
+ total = __raw_readl(ppmu_base + PMCNT_OFFSET(ch));
+
+ return total;
+}
--- /dev/null
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com/
+ *
+ * EXYNOS PPMU header
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#ifndef __DEVFREQ_EXYNOS_PPMU_H
+#define __DEVFREQ_EXYNOS_PPMU_H __FILE__
+
+#include <linux/ktime.h>
+
+/* For PPMU Control */
+#define PPMU_ENABLE BIT(0)
+#define PPMU_DISABLE 0x0
+#define PPMU_CYCLE_RESET BIT(1)
+#define PPMU_COUNTER_RESET BIT(2)
+
+#define PPMU_ENABLE_COUNT0 BIT(0)
+#define PPMU_ENABLE_COUNT1 BIT(1)
+#define PPMU_ENABLE_COUNT2 BIT(2)
+#define PPMU_ENABLE_COUNT3 BIT(3)
+#define PPMU_ENABLE_CYCLE BIT(31)
+
+#define PPMU_CNTENS 0x10
+#define PPMU_FLAG 0x50
+#define PPMU_CCNT_OVERFLOW BIT(31)
+#define PPMU_CCNT 0x100
+
+#define PPMU_PMCNT0 0x110
+#define PPMU_PMCNT_OFFSET 0x10
+#define PMCNT_OFFSET(x) (PPMU_PMCNT0 + (PPMU_PMCNT_OFFSET * x))
+
+#define PPMU_BEVT0SEL 0x1000
+#define PPMU_BEVTSEL_OFFSET 0x100
+#define PPMU_BEVTSEL(x) (PPMU_BEVT0SEL + (ch * PPMU_BEVTSEL_OFFSET))
+
+/* For Event Selection */
+#define RD_DATA_COUNT 0x5
+#define WR_DATA_COUNT 0x6
+#define RDWR_DATA_COUNT 0x7
+
+enum ppmu_counter {
+ PPMU_PMNCNT0,
+ PPMU_PMCCNT1,
+ PPMU_PMNCNT2,
+ PPMU_PMNCNT3,
+ PPMU_PMNCNT_MAX,
+};
+
+struct bus_opp_table {
+ unsigned int idx;
+ unsigned long clk;
+ unsigned long volt;
+};
+
+struct exynos_ppmu {
+ void __iomem *hw_base;
+ unsigned int ccnt;
+ unsigned int event[PPMU_PMNCNT_MAX];
+ unsigned int count[PPMU_PMNCNT_MAX];
+ unsigned long long ns;
+ ktime_t reset_time;
+ bool ccnt_overflow;
+ bool count_overflow[PPMU_PMNCNT_MAX];
+};
+
+void exynos_ppmu_reset(void __iomem *ppmu_base);
+void exynos_ppmu_setevent(void __iomem *ppmu_base, unsigned int ch,
+ unsigned int evt);
+void exynos_ppmu_start(void __iomem *ppmu_base);
+void exynos_ppmu_stop(void __iomem *ppmu_base);
+unsigned int exynos_ppmu_read(void __iomem *ppmu_base, unsigned int ch);
+#endif /* __DEVFREQ_EXYNOS_PPMU_H */
+++ /dev/null
-/* drivers/devfreq/exynos4210_memorybus.c
- *
- * Copyright (c) 2011 Samsung Electronics Co., Ltd.
- * http://www.samsung.com/
- * MyungJoo Ham <myungjoo.ham@samsung.com>
- *
- * EXYNOS4 - Memory/Bus clock frequency scaling support in DEVFREQ framework
- * This version supports EXYNOS4210 only. This changes bus frequencies
- * and vddint voltages. Exynos4412/4212 should be able to be supported
- * with minor modifications.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/suspend.h>
-#include <linux/opp.h>
-#include <linux/devfreq.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/consumer.h>
-#include <linux/module.h>
-
-/* Exynos4 ASV has been in the mailing list, but not upstreamed, yet. */
-#ifdef CONFIG_EXYNOS_ASV
-extern unsigned int exynos_result_of_asv;
-#endif
-
-#include <mach/regs-clock.h>
-
-#include <plat/map-s5p.h>
-
-#define MAX_SAFEVOLT 1200000 /* 1.2V */
-
-enum exynos4_busf_type {
- TYPE_BUSF_EXYNOS4210,
- TYPE_BUSF_EXYNOS4x12,
-};
-
-/* Assume that the bus is saturated if the utilization is 40% */
-#define BUS_SATURATION_RATIO 40
-
-enum ppmu_counter {
- PPMU_PMNCNT0 = 0,
- PPMU_PMCCNT1,
- PPMU_PMNCNT2,
- PPMU_PMNCNT3,
- PPMU_PMNCNT_MAX,
-};
-struct exynos4_ppmu {
- void __iomem *hw_base;
- unsigned int ccnt;
- unsigned int event;
- unsigned int count[PPMU_PMNCNT_MAX];
- bool ccnt_overflow;
- bool count_overflow[PPMU_PMNCNT_MAX];
-};
-
-enum busclk_level_idx {
- LV_0 = 0,
- LV_1,
- LV_2,
- LV_3,
- LV_4,
- _LV_END
-};
-#define EX4210_LV_MAX LV_2
-#define EX4x12_LV_MAX LV_4
-#define EX4210_LV_NUM (LV_2 + 1)
-#define EX4x12_LV_NUM (LV_4 + 1)
-
-/**
- * struct busfreq_opp_info - opp information for bus
- * @rate: Frequency in hertz
- * @volt: Voltage in microvolts corresponding to this OPP
- */
-struct busfreq_opp_info {
- unsigned long rate;
- unsigned long volt;
-};
-
-struct busfreq_data {
- enum exynos4_busf_type type;
- struct device *dev;
- struct devfreq *devfreq;
- bool disabled;
- struct regulator *vdd_int;
- struct regulator *vdd_mif; /* Exynos4412/4212 only */
- struct busfreq_opp_info curr_oppinfo;
- struct exynos4_ppmu dmc[2];
-
- struct notifier_block pm_notifier;
- struct mutex lock;
-
- /* Dividers calculated at boot/probe-time */
- unsigned int dmc_divtable[_LV_END]; /* DMC0 */
- unsigned int top_divtable[_LV_END];
-};
-
-struct bus_opp_table {
- unsigned int idx;
- unsigned long clk;
- unsigned long volt;
-};
-
-/* 4210 controls clock of mif and voltage of int */
-static struct bus_opp_table exynos4210_busclk_table[] = {
- {LV_0, 400000, 1150000},
- {LV_1, 267000, 1050000},
- {LV_2, 133000, 1025000},
- {0, 0, 0},
-};
-
-/*
- * MIF is the main control knob clock for exynox4x12 MIF/INT
- * clock and voltage of both mif/int are controlled.
- */
-static struct bus_opp_table exynos4x12_mifclk_table[] = {
- {LV_0, 400000, 1100000},
- {LV_1, 267000, 1000000},
- {LV_2, 160000, 950000},
- {LV_3, 133000, 950000},
- {LV_4, 100000, 950000},
- {0, 0, 0},
-};
-
-/*
- * INT is not the control knob of 4x12. LV_x is not meant to represent
- * the current performance. (MIF does)
- */
-static struct bus_opp_table exynos4x12_intclk_table[] = {
- {LV_0, 200000, 1000000},
- {LV_1, 160000, 950000},
- {LV_2, 133000, 925000},
- {LV_3, 100000, 900000},
- {0, 0, 0},
-};
-
-/* TODO: asv volt definitions are "__initdata"? */
-/* Some chips have different operating voltages */
-static unsigned int exynos4210_asv_volt[][EX4210_LV_NUM] = {
- {1150000, 1050000, 1050000},
- {1125000, 1025000, 1025000},
- {1100000, 1000000, 1000000},
- {1075000, 975000, 975000},
- {1050000, 950000, 950000},
-};
-
-static unsigned int exynos4x12_mif_step_50[][EX4x12_LV_NUM] = {
- /* 400 267 160 133 100 */
- {1050000, 950000, 900000, 900000, 900000}, /* ASV0 */
- {1050000, 950000, 900000, 900000, 900000}, /* ASV1 */
- {1050000, 950000, 900000, 900000, 900000}, /* ASV2 */
- {1050000, 900000, 900000, 900000, 900000}, /* ASV3 */
- {1050000, 900000, 900000, 900000, 850000}, /* ASV4 */
- {1050000, 900000, 900000, 850000, 850000}, /* ASV5 */
- {1050000, 900000, 850000, 850000, 850000}, /* ASV6 */
- {1050000, 900000, 850000, 850000, 850000}, /* ASV7 */
- {1050000, 900000, 850000, 850000, 850000}, /* ASV8 */
-};
-
-static unsigned int exynos4x12_int_volt[][EX4x12_LV_NUM] = {
- /* 200 160 133 100 */
- {1000000, 950000, 925000, 900000}, /* ASV0 */
- {975000, 925000, 925000, 900000}, /* ASV1 */
- {950000, 925000, 900000, 875000}, /* ASV2 */
- {950000, 900000, 900000, 875000}, /* ASV3 */
- {925000, 875000, 875000, 875000}, /* ASV4 */
- {900000, 850000, 850000, 850000}, /* ASV5 */
- {900000, 850000, 850000, 850000}, /* ASV6 */
- {900000, 850000, 850000, 850000}, /* ASV7 */
- {900000, 850000, 850000, 850000}, /* ASV8 */
-};
-
-/*** Clock Divider Data for Exynos4210 ***/
-static unsigned int exynos4210_clkdiv_dmc0[][8] = {
- /*
- * Clock divider value for following
- * { DIVACP, DIVACP_PCLK, DIVDPHY, DIVDMC, DIVDMCD
- * DIVDMCP, DIVCOPY2, DIVCORE_TIMERS }
- */
-
- /* DMC L0: 400MHz */
- { 3, 1, 1, 1, 1, 1, 3, 1 },
- /* DMC L1: 266.7MHz */
- { 4, 1, 1, 2, 1, 1, 3, 1 },
- /* DMC L2: 133MHz */
- { 5, 1, 1, 5, 1, 1, 3, 1 },
-};
-static unsigned int exynos4210_clkdiv_top[][5] = {
- /*
- * Clock divider value for following
- * { DIVACLK200, DIVACLK100, DIVACLK160, DIVACLK133, DIVONENAND }
- */
- /* ACLK200 L0: 200MHz */
- { 3, 7, 4, 5, 1 },
- /* ACLK200 L1: 160MHz */
- { 4, 7, 5, 6, 1 },
- /* ACLK200 L2: 133MHz */
- { 5, 7, 7, 7, 1 },
-};
-static unsigned int exynos4210_clkdiv_lr_bus[][2] = {
- /*
- * Clock divider value for following
- * { DIVGDL/R, DIVGPL/R }
- */
- /* ACLK_GDL/R L1: 200MHz */
- { 3, 1 },
- /* ACLK_GDL/R L2: 160MHz */
- { 4, 1 },
- /* ACLK_GDL/R L3: 133MHz */
- { 5, 1 },
-};
-
-/*** Clock Divider Data for Exynos4212/4412 ***/
-static unsigned int exynos4x12_clkdiv_dmc0[][6] = {
- /*
- * Clock divider value for following
- * { DIVACP, DIVACP_PCLK, DIVDPHY, DIVDMC, DIVDMCD
- * DIVDMCP}
- */
-
- /* DMC L0: 400MHz */
- {3, 1, 1, 1, 1, 1},
- /* DMC L1: 266.7MHz */
- {4, 1, 1, 2, 1, 1},
- /* DMC L2: 160MHz */
- {5, 1, 1, 4, 1, 1},
- /* DMC L3: 133MHz */
- {5, 1, 1, 5, 1, 1},
- /* DMC L4: 100MHz */
- {7, 1, 1, 7, 1, 1},
-};
-static unsigned int exynos4x12_clkdiv_dmc1[][6] = {
- /*
- * Clock divider value for following
- * { G2DACP, DIVC2C, DIVC2C_ACLK }
- */
-
- /* DMC L0: 400MHz */
- {3, 1, 1},
- /* DMC L1: 266.7MHz */
- {4, 2, 1},
- /* DMC L2: 160MHz */
- {5, 4, 1},
- /* DMC L3: 133MHz */
- {5, 5, 1},
- /* DMC L4: 100MHz */
- {7, 7, 1},
-};
-static unsigned int exynos4x12_clkdiv_top[][5] = {
- /*
- * Clock divider value for following
- * { DIVACLK266_GPS, DIVACLK100, DIVACLK160,
- DIVACLK133, DIVONENAND }
- */
-
- /* ACLK_GDL/R L0: 200MHz */
- {2, 7, 4, 5, 1},
- /* ACLK_GDL/R L1: 200MHz */
- {2, 7, 4, 5, 1},
- /* ACLK_GDL/R L2: 160MHz */
- {4, 7, 5, 7, 1},
- /* ACLK_GDL/R L3: 133MHz */
- {4, 7, 5, 7, 1},
- /* ACLK_GDL/R L4: 100MHz */
- {7, 7, 7, 7, 1},
-};
-static unsigned int exynos4x12_clkdiv_lr_bus[][2] = {
- /*
- * Clock divider value for following
- * { DIVGDL/R, DIVGPL/R }
- */
-
- /* ACLK_GDL/R L0: 200MHz */
- {3, 1},
- /* ACLK_GDL/R L1: 200MHz */
- {3, 1},
- /* ACLK_GDL/R L2: 160MHz */
- {4, 1},
- /* ACLK_GDL/R L3: 133MHz */
- {5, 1},
- /* ACLK_GDL/R L4: 100MHz */
- {7, 1},
-};
-static unsigned int exynos4x12_clkdiv_sclkip[][3] = {
- /*
- * Clock divider value for following
- * { DIVMFC, DIVJPEG, DIVFIMC0~3}
- */
-
- /* SCLK_MFC: 200MHz */
- {3, 3, 4},
- /* SCLK_MFC: 200MHz */
- {3, 3, 4},
- /* SCLK_MFC: 160MHz */
- {4, 4, 5},
- /* SCLK_MFC: 133MHz */
- {5, 5, 5},
- /* SCLK_MFC: 100MHz */
- {7, 7, 7},
-};
-
-
-static int exynos4210_set_busclk(struct busfreq_data *data,
- struct busfreq_opp_info *oppi)
-{
- unsigned int index;
- unsigned int tmp;
-
- for (index = LV_0; index < EX4210_LV_NUM; index++)
- if (oppi->rate == exynos4210_busclk_table[index].clk)
- break;
-
- if (index == EX4210_LV_NUM)
- return -EINVAL;
-
- /* Change Divider - DMC0 */
- tmp = data->dmc_divtable[index];
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_DMC0);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC0);
- } while (tmp & 0x11111111);
-
- /* Change Divider - TOP */
- tmp = data->top_divtable[index];
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_TOP);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_TOP);
- } while (tmp & 0x11111);
-
- /* Change Divider - LEFTBUS */
- tmp = __raw_readl(EXYNOS4_CLKDIV_LEFTBUS);
-
- tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
-
- tmp |= ((exynos4210_clkdiv_lr_bus[index][0] <<
- EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
- (exynos4210_clkdiv_lr_bus[index][1] <<
- EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_LEFTBUS);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_LEFTBUS);
- } while (tmp & 0x11);
-
- /* Change Divider - RIGHTBUS */
- tmp = __raw_readl(EXYNOS4_CLKDIV_RIGHTBUS);
-
- tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
-
- tmp |= ((exynos4210_clkdiv_lr_bus[index][0] <<
- EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
- (exynos4210_clkdiv_lr_bus[index][1] <<
- EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_RIGHTBUS);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_RIGHTBUS);
- } while (tmp & 0x11);
-
- return 0;
-}
-
-static int exynos4x12_set_busclk(struct busfreq_data *data,
- struct busfreq_opp_info *oppi)
-{
- unsigned int index;
- unsigned int tmp;
-
- for (index = LV_0; index < EX4x12_LV_NUM; index++)
- if (oppi->rate == exynos4x12_mifclk_table[index].clk)
- break;
-
- if (index == EX4x12_LV_NUM)
- return -EINVAL;
-
- /* Change Divider - DMC0 */
- tmp = data->dmc_divtable[index];
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_DMC0);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC0);
- } while (tmp & 0x11111111);
-
- /* Change Divider - DMC1 */
- tmp = __raw_readl(EXYNOS4_CLKDIV_DMC1);
-
- tmp &= ~(EXYNOS4_CLKDIV_DMC1_G2D_ACP_MASK |
- EXYNOS4_CLKDIV_DMC1_C2C_MASK |
- EXYNOS4_CLKDIV_DMC1_C2CACLK_MASK);
-
- tmp |= ((exynos4x12_clkdiv_dmc1[index][0] <<
- EXYNOS4_CLKDIV_DMC1_G2D_ACP_SHIFT) |
- (exynos4x12_clkdiv_dmc1[index][1] <<
- EXYNOS4_CLKDIV_DMC1_C2C_SHIFT) |
- (exynos4x12_clkdiv_dmc1[index][2] <<
- EXYNOS4_CLKDIV_DMC1_C2CACLK_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_DMC1);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_DMC1);
- } while (tmp & 0x111111);
-
- /* Change Divider - TOP */
- tmp = __raw_readl(EXYNOS4_CLKDIV_TOP);
-
- tmp &= ~(EXYNOS4_CLKDIV_TOP_ACLK266_GPS_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK100_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK160_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK133_MASK |
- EXYNOS4_CLKDIV_TOP_ONENAND_MASK);
-
- tmp |= ((exynos4x12_clkdiv_top[index][0] <<
- EXYNOS4_CLKDIV_TOP_ACLK266_GPS_SHIFT) |
- (exynos4x12_clkdiv_top[index][1] <<
- EXYNOS4_CLKDIV_TOP_ACLK100_SHIFT) |
- (exynos4x12_clkdiv_top[index][2] <<
- EXYNOS4_CLKDIV_TOP_ACLK160_SHIFT) |
- (exynos4x12_clkdiv_top[index][3] <<
- EXYNOS4_CLKDIV_TOP_ACLK133_SHIFT) |
- (exynos4x12_clkdiv_top[index][4] <<
- EXYNOS4_CLKDIV_TOP_ONENAND_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_TOP);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_TOP);
- } while (tmp & 0x11111);
-
- /* Change Divider - LEFTBUS */
- tmp = __raw_readl(EXYNOS4_CLKDIV_LEFTBUS);
-
- tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
-
- tmp |= ((exynos4x12_clkdiv_lr_bus[index][0] <<
- EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
- (exynos4x12_clkdiv_lr_bus[index][1] <<
- EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_LEFTBUS);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_LEFTBUS);
- } while (tmp & 0x11);
-
- /* Change Divider - RIGHTBUS */
- tmp = __raw_readl(EXYNOS4_CLKDIV_RIGHTBUS);
-
- tmp &= ~(EXYNOS4_CLKDIV_BUS_GDLR_MASK | EXYNOS4_CLKDIV_BUS_GPLR_MASK);
-
- tmp |= ((exynos4x12_clkdiv_lr_bus[index][0] <<
- EXYNOS4_CLKDIV_BUS_GDLR_SHIFT) |
- (exynos4x12_clkdiv_lr_bus[index][1] <<
- EXYNOS4_CLKDIV_BUS_GPLR_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_RIGHTBUS);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_RIGHTBUS);
- } while (tmp & 0x11);
-
- /* Change Divider - MFC */
- tmp = __raw_readl(EXYNOS4_CLKDIV_MFC);
-
- tmp &= ~(EXYNOS4_CLKDIV_MFC_MASK);
-
- tmp |= ((exynos4x12_clkdiv_sclkip[index][0] <<
- EXYNOS4_CLKDIV_MFC_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_MFC);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_MFC);
- } while (tmp & 0x1);
-
- /* Change Divider - JPEG */
- tmp = __raw_readl(EXYNOS4_CLKDIV_CAM1);
-
- tmp &= ~(EXYNOS4_CLKDIV_CAM1_JPEG_MASK);
-
- tmp |= ((exynos4x12_clkdiv_sclkip[index][1] <<
- EXYNOS4_CLKDIV_CAM1_JPEG_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_CAM1);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_CAM1);
- } while (tmp & 0x1);
-
- /* Change Divider - FIMC0~3 */
- tmp = __raw_readl(EXYNOS4_CLKDIV_CAM);
-
- tmp &= ~(EXYNOS4_CLKDIV_CAM_FIMC0_MASK | EXYNOS4_CLKDIV_CAM_FIMC1_MASK |
- EXYNOS4_CLKDIV_CAM_FIMC2_MASK | EXYNOS4_CLKDIV_CAM_FIMC3_MASK);
-
- tmp |= ((exynos4x12_clkdiv_sclkip[index][2] <<
- EXYNOS4_CLKDIV_CAM_FIMC0_SHIFT) |
- (exynos4x12_clkdiv_sclkip[index][2] <<
- EXYNOS4_CLKDIV_CAM_FIMC1_SHIFT) |
- (exynos4x12_clkdiv_sclkip[index][2] <<
- EXYNOS4_CLKDIV_CAM_FIMC2_SHIFT) |
- (exynos4x12_clkdiv_sclkip[index][2] <<
- EXYNOS4_CLKDIV_CAM_FIMC3_SHIFT));
-
- __raw_writel(tmp, EXYNOS4_CLKDIV_CAM);
-
- do {
- tmp = __raw_readl(EXYNOS4_CLKDIV_STAT_CAM1);
- } while (tmp & 0x1111);
-
- return 0;
-}
-
-
-static void busfreq_mon_reset(struct busfreq_data *data)
-{
- unsigned int i;
-
- for (i = 0; i < 2; i++) {
- void __iomem *ppmu_base = data->dmc[i].hw_base;
-
- /* Reset PPMU */
- __raw_writel(0x8000000f, ppmu_base + 0xf010);
- __raw_writel(0x8000000f, ppmu_base + 0xf050);
- __raw_writel(0x6, ppmu_base + 0xf000);
- __raw_writel(0x0, ppmu_base + 0xf100);
-
- /* Set PPMU Event */
- data->dmc[i].event = 0x6;
- __raw_writel(((data->dmc[i].event << 12) | 0x1),
- ppmu_base + 0xfc);
-
- /* Start PPMU */
- __raw_writel(0x1, ppmu_base + 0xf000);
- }
-}
-
-static void exynos4_read_ppmu(struct busfreq_data *data)
-{
- int i, j;
-
- for (i = 0; i < 2; i++) {
- void __iomem *ppmu_base = data->dmc[i].hw_base;
- u32 overflow;
-
- /* Stop PPMU */
- __raw_writel(0x0, ppmu_base + 0xf000);
-
- /* Update local data from PPMU */
- overflow = __raw_readl(ppmu_base + 0xf050);
-
- data->dmc[i].ccnt = __raw_readl(ppmu_base + 0xf100);
- data->dmc[i].ccnt_overflow = overflow & (1 << 31);
-
- for (j = 0; j < PPMU_PMNCNT_MAX; j++) {
- data->dmc[i].count[j] = __raw_readl(
- ppmu_base + (0xf110 + (0x10 * j)));
- data->dmc[i].count_overflow[j] = overflow & (1 << j);
- }
- }
-
- busfreq_mon_reset(data);
-}
-
-static int exynos4x12_get_intspec(unsigned long mifclk)
-{
- int i = 0;
-
- while (exynos4x12_intclk_table[i].clk) {
- if (exynos4x12_intclk_table[i].clk <= mifclk)
- return i;
- i++;
- }
-
- return -EINVAL;
-}
-
-static int exynos4_bus_setvolt(struct busfreq_data *data,
- struct busfreq_opp_info *oppi,
- struct busfreq_opp_info *oldoppi)
-{
- int err = 0, tmp;
- unsigned long volt = oppi->volt;
-
- switch (data->type) {
- case TYPE_BUSF_EXYNOS4210:
- /* OPP represents DMC clock + INT voltage */
- err = regulator_set_voltage(data->vdd_int, volt,
- MAX_SAFEVOLT);
- break;
- case TYPE_BUSF_EXYNOS4x12:
- /* OPP represents MIF clock + MIF voltage */
- err = regulator_set_voltage(data->vdd_mif, volt,
- MAX_SAFEVOLT);
- if (err)
- break;
-
- tmp = exynos4x12_get_intspec(oppi->rate);
- if (tmp < 0) {
- err = tmp;
- regulator_set_voltage(data->vdd_mif,
- oldoppi->volt,
- MAX_SAFEVOLT);
- break;
- }
- err = regulator_set_voltage(data->vdd_int,
- exynos4x12_intclk_table[tmp].volt,
- MAX_SAFEVOLT);
- /* Try to recover */
- if (err)
- regulator_set_voltage(data->vdd_mif,
- oldoppi->volt,
- MAX_SAFEVOLT);
- break;
- default:
- err = -EINVAL;
- }
-
- return err;
-}
-
-static int exynos4_bus_target(struct device *dev, unsigned long *_freq,
- u32 flags)
-{
- int err = 0;
- struct platform_device *pdev = container_of(dev, struct platform_device,
- dev);
- struct busfreq_data *data = platform_get_drvdata(pdev);
- struct opp *opp;
- unsigned long freq;
- unsigned long old_freq = data->curr_oppinfo.rate;
- struct busfreq_opp_info new_oppinfo;
-
- rcu_read_lock();
- opp = devfreq_recommended_opp(dev, _freq, flags);
- if (IS_ERR(opp)) {
- rcu_read_unlock();
- return PTR_ERR(opp);
- }
- new_oppinfo.rate = opp_get_freq(opp);
- new_oppinfo.volt = opp_get_voltage(opp);
- rcu_read_unlock();
- freq = new_oppinfo.rate;
-
- if (old_freq == freq)
- return 0;
-
- dev_dbg(dev, "targeting %lukHz %luuV\n", freq, new_oppinfo.volt);
-
- mutex_lock(&data->lock);
-
- if (data->disabled)
- goto out;
-
- if (old_freq < freq)
- err = exynos4_bus_setvolt(data, &new_oppinfo,
- &data->curr_oppinfo);
- if (err)
- goto out;
-
- if (old_freq != freq) {
- switch (data->type) {
- case TYPE_BUSF_EXYNOS4210:
- err = exynos4210_set_busclk(data, &new_oppinfo);
- break;
- case TYPE_BUSF_EXYNOS4x12:
- err = exynos4x12_set_busclk(data, &new_oppinfo);
- break;
- default:
- err = -EINVAL;
- }
- }
- if (err)
- goto out;
-
- if (old_freq > freq)
- err = exynos4_bus_setvolt(data, &new_oppinfo,
- &data->curr_oppinfo);
- if (err)
- goto out;
-
- data->curr_oppinfo = new_oppinfo;
-out:
- mutex_unlock(&data->lock);
- return err;
-}
-
-static int exynos4_get_busier_dmc(struct busfreq_data *data)
-{
- u64 p0 = data->dmc[0].count[0];
- u64 p1 = data->dmc[1].count[0];
-
- p0 *= data->dmc[1].ccnt;
- p1 *= data->dmc[0].ccnt;
-
- if (data->dmc[1].ccnt == 0)
- return 0;
-
- if (p0 > p1)
- return 0;
- return 1;
-}
-
-static int exynos4_bus_get_dev_status(struct device *dev,
- struct devfreq_dev_status *stat)
-{
- struct busfreq_data *data = dev_get_drvdata(dev);
- int busier_dmc;
- int cycles_x2 = 2; /* 2 x cycles */
- void __iomem *addr;
- u32 timing;
- u32 memctrl;
-
- exynos4_read_ppmu(data);
- busier_dmc = exynos4_get_busier_dmc(data);
- stat->current_frequency = data->curr_oppinfo.rate;
-
- if (busier_dmc)
- addr = S5P_VA_DMC1;
- else
- addr = S5P_VA_DMC0;
-
- memctrl = __raw_readl(addr + 0x04); /* one of DDR2/3/LPDDR2 */
- timing = __raw_readl(addr + 0x38); /* CL or WL/RL values */
-
- switch ((memctrl >> 8) & 0xf) {
- case 0x4: /* DDR2 */
- cycles_x2 = ((timing >> 16) & 0xf) * 2;
- break;
- case 0x5: /* LPDDR2 */
- case 0x6: /* DDR3 */
- cycles_x2 = ((timing >> 8) & 0xf) + ((timing >> 0) & 0xf);
- break;
- default:
- pr_err("%s: Unknown Memory Type(%d).\n", __func__,
- (memctrl >> 8) & 0xf);
- return -EINVAL;
- }
-
- /* Number of cycles spent on memory access */
- stat->busy_time = data->dmc[busier_dmc].count[0] / 2 * (cycles_x2 + 2);
- stat->busy_time *= 100 / BUS_SATURATION_RATIO;
- stat->total_time = data->dmc[busier_dmc].ccnt;
-
- /* If the counters have overflown, retry */
- if (data->dmc[busier_dmc].ccnt_overflow ||
- data->dmc[busier_dmc].count_overflow[0])
- return -EAGAIN;
-
- return 0;
-}
-
-static void exynos4_bus_exit(struct device *dev)
-{
- struct busfreq_data *data = dev_get_drvdata(dev);
-
- devfreq_unregister_opp_notifier(dev, data->devfreq);
-}
-
-static struct devfreq_dev_profile exynos4_devfreq_profile = {
- .initial_freq = 400000,
- .polling_ms = 50,
- .target = exynos4_bus_target,
- .get_dev_status = exynos4_bus_get_dev_status,
- .exit = exynos4_bus_exit,
-};
-
-static int exynos4210_init_tables(struct busfreq_data *data)
-{
- u32 tmp;
- int mgrp;
- int i, err = 0;
-
- tmp = __raw_readl(EXYNOS4_CLKDIV_DMC0);
- for (i = LV_0; i < EX4210_LV_NUM; i++) {
- tmp &= ~(EXYNOS4_CLKDIV_DMC0_ACP_MASK |
- EXYNOS4_CLKDIV_DMC0_ACPPCLK_MASK |
- EXYNOS4_CLKDIV_DMC0_DPHY_MASK |
- EXYNOS4_CLKDIV_DMC0_DMC_MASK |
- EXYNOS4_CLKDIV_DMC0_DMCD_MASK |
- EXYNOS4_CLKDIV_DMC0_DMCP_MASK |
- EXYNOS4_CLKDIV_DMC0_COPY2_MASK |
- EXYNOS4_CLKDIV_DMC0_CORETI_MASK);
-
- tmp |= ((exynos4210_clkdiv_dmc0[i][0] <<
- EXYNOS4_CLKDIV_DMC0_ACP_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][1] <<
- EXYNOS4_CLKDIV_DMC0_ACPPCLK_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][2] <<
- EXYNOS4_CLKDIV_DMC0_DPHY_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][3] <<
- EXYNOS4_CLKDIV_DMC0_DMC_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][4] <<
- EXYNOS4_CLKDIV_DMC0_DMCD_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][5] <<
- EXYNOS4_CLKDIV_DMC0_DMCP_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][6] <<
- EXYNOS4_CLKDIV_DMC0_COPY2_SHIFT) |
- (exynos4210_clkdiv_dmc0[i][7] <<
- EXYNOS4_CLKDIV_DMC0_CORETI_SHIFT));
-
- data->dmc_divtable[i] = tmp;
- }
-
- tmp = __raw_readl(EXYNOS4_CLKDIV_TOP);
- for (i = LV_0; i < EX4210_LV_NUM; i++) {
- tmp &= ~(EXYNOS4_CLKDIV_TOP_ACLK200_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK100_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK160_MASK |
- EXYNOS4_CLKDIV_TOP_ACLK133_MASK |
- EXYNOS4_CLKDIV_TOP_ONENAND_MASK);
-
- tmp |= ((exynos4210_clkdiv_top[i][0] <<
- EXYNOS4_CLKDIV_TOP_ACLK200_SHIFT) |
- (exynos4210_clkdiv_top[i][1] <<
- EXYNOS4_CLKDIV_TOP_ACLK100_SHIFT) |
- (exynos4210_clkdiv_top[i][2] <<
- EXYNOS4_CLKDIV_TOP_ACLK160_SHIFT) |
- (exynos4210_clkdiv_top[i][3] <<
- EXYNOS4_CLKDIV_TOP_ACLK133_SHIFT) |
- (exynos4210_clkdiv_top[i][4] <<
- EXYNOS4_CLKDIV_TOP_ONENAND_SHIFT));
-
- data->top_divtable[i] = tmp;
- }
-
-#ifdef CONFIG_EXYNOS_ASV
- tmp = exynos4_result_of_asv;
-#else
- tmp = 0; /* Max voltages for the reliability of the unknown */
-#endif
-
- pr_debug("ASV Group of Exynos4 is %d\n", tmp);
- /* Use merged grouping for voltage */
- switch (tmp) {
- case 0:
- mgrp = 0;
- break;
- case 1:
- case 2:
- mgrp = 1;
- break;
- case 3:
- case 4:
- mgrp = 2;
- break;
- case 5:
- case 6:
- mgrp = 3;
- break;
- case 7:
- mgrp = 4;
- break;
- default:
- pr_warn("Unknown ASV Group. Use max voltage.\n");
- mgrp = 0;
- }
-
- for (i = LV_0; i < EX4210_LV_NUM; i++)
- exynos4210_busclk_table[i].volt = exynos4210_asv_volt[mgrp][i];
-
- for (i = LV_0; i < EX4210_LV_NUM; i++) {
- err = opp_add(data->dev, exynos4210_busclk_table[i].clk,
- exynos4210_busclk_table[i].volt);
- if (err) {
- dev_err(data->dev, "Cannot add opp entries.\n");
- return err;
- }
- }
-
-
- return 0;
-}
-
-static int exynos4x12_init_tables(struct busfreq_data *data)
-{
- unsigned int i;
- unsigned int tmp;
- int ret;
-
- /* Enable pause function for DREX2 DVFS */
- tmp = __raw_readl(EXYNOS4_DMC_PAUSE_CTRL);
- tmp |= EXYNOS4_DMC_PAUSE_ENABLE;
- __raw_writel(tmp, EXYNOS4_DMC_PAUSE_CTRL);
-
- tmp = __raw_readl(EXYNOS4_CLKDIV_DMC0);
-
- for (i = 0; i < EX4x12_LV_NUM; i++) {
- tmp &= ~(EXYNOS4_CLKDIV_DMC0_ACP_MASK |
- EXYNOS4_CLKDIV_DMC0_ACPPCLK_MASK |
- EXYNOS4_CLKDIV_DMC0_DPHY_MASK |
- EXYNOS4_CLKDIV_DMC0_DMC_MASK |
- EXYNOS4_CLKDIV_DMC0_DMCD_MASK |
- EXYNOS4_CLKDIV_DMC0_DMCP_MASK);
-
- tmp |= ((exynos4x12_clkdiv_dmc0[i][0] <<
- EXYNOS4_CLKDIV_DMC0_ACP_SHIFT) |
- (exynos4x12_clkdiv_dmc0[i][1] <<
- EXYNOS4_CLKDIV_DMC0_ACPPCLK_SHIFT) |
- (exynos4x12_clkdiv_dmc0[i][2] <<
- EXYNOS4_CLKDIV_DMC0_DPHY_SHIFT) |
- (exynos4x12_clkdiv_dmc0[i][3] <<
- EXYNOS4_CLKDIV_DMC0_DMC_SHIFT) |
- (exynos4x12_clkdiv_dmc0[i][4] <<
- EXYNOS4_CLKDIV_DMC0_DMCD_SHIFT) |
- (exynos4x12_clkdiv_dmc0[i][5] <<
- EXYNOS4_CLKDIV_DMC0_DMCP_SHIFT));
-
- data->dmc_divtable[i] = tmp;
- }
-
-#ifdef CONFIG_EXYNOS_ASV
- tmp = exynos4_result_of_asv;
-#else
- tmp = 0; /* Max voltages for the reliability of the unknown */
-#endif
-
- if (tmp > 8)
- tmp = 0;
- pr_debug("ASV Group of Exynos4x12 is %d\n", tmp);
-
- for (i = 0; i < EX4x12_LV_NUM; i++) {
- exynos4x12_mifclk_table[i].volt =
- exynos4x12_mif_step_50[tmp][i];
- exynos4x12_intclk_table[i].volt =
- exynos4x12_int_volt[tmp][i];
- }
-
- for (i = 0; i < EX4x12_LV_NUM; i++) {
- ret = opp_add(data->dev, exynos4x12_mifclk_table[i].clk,
- exynos4x12_mifclk_table[i].volt);
- if (ret) {
- dev_err(data->dev, "Fail to add opp entries.\n");
- return ret;
- }
- }
-
- return 0;
-}
-
-static int exynos4_busfreq_pm_notifier_event(struct notifier_block *this,
- unsigned long event, void *ptr)
-{
- struct busfreq_data *data = container_of(this, struct busfreq_data,
- pm_notifier);
- struct opp *opp;
- struct busfreq_opp_info new_oppinfo;
- unsigned long maxfreq = ULONG_MAX;
- int err = 0;
-
- switch (event) {
- case PM_SUSPEND_PREPARE:
- /* Set Fastest and Deactivate DVFS */
- mutex_lock(&data->lock);
-
- data->disabled = true;
-
- rcu_read_lock();
- opp = opp_find_freq_floor(data->dev, &maxfreq);
- if (IS_ERR(opp)) {
- rcu_read_unlock();
- dev_err(data->dev, "%s: unable to find a min freq\n",
- __func__);
- return PTR_ERR(opp);
- }
- new_oppinfo.rate = opp_get_freq(opp);
- new_oppinfo.volt = opp_get_voltage(opp);
- rcu_read_unlock();
-
- err = exynos4_bus_setvolt(data, &new_oppinfo,
- &data->curr_oppinfo);
- if (err)
- goto unlock;
-
- switch (data->type) {
- case TYPE_BUSF_EXYNOS4210:
- err = exynos4210_set_busclk(data, &new_oppinfo);
- break;
- case TYPE_BUSF_EXYNOS4x12:
- err = exynos4x12_set_busclk(data, &new_oppinfo);
- break;
- default:
- err = -EINVAL;
- }
- if (err)
- goto unlock;
-
- data->curr_oppinfo = new_oppinfo;
-unlock:
- mutex_unlock(&data->lock);
- if (err)
- return err;
- return NOTIFY_OK;
- case PM_POST_RESTORE:
- case PM_POST_SUSPEND:
- /* Reactivate */
- mutex_lock(&data->lock);
- data->disabled = false;
- mutex_unlock(&data->lock);
- return NOTIFY_OK;
- }
-
- return NOTIFY_DONE;
-}
-
-static int exynos4_busfreq_probe(struct platform_device *pdev)
-{
- struct busfreq_data *data;
- struct opp *opp;
- struct device *dev = &pdev->dev;
- int err = 0;
-
- data = devm_kzalloc(&pdev->dev, sizeof(struct busfreq_data), GFP_KERNEL);
- if (data == NULL) {
- dev_err(dev, "Cannot allocate memory.\n");
- return -ENOMEM;
- }
-
- data->type = pdev->id_entry->driver_data;
- data->dmc[0].hw_base = S5P_VA_DMC0;
- data->dmc[1].hw_base = S5P_VA_DMC1;
- data->pm_notifier.notifier_call = exynos4_busfreq_pm_notifier_event;
- data->dev = dev;
- mutex_init(&data->lock);
-
- switch (data->type) {
- case TYPE_BUSF_EXYNOS4210:
- err = exynos4210_init_tables(data);
- break;
- case TYPE_BUSF_EXYNOS4x12:
- err = exynos4x12_init_tables(data);
- break;
- default:
- dev_err(dev, "Cannot determine the device id %d\n", data->type);
- err = -EINVAL;
- }
- if (err)
- return err;
-
- data->vdd_int = devm_regulator_get(dev, "vdd_int");
- if (IS_ERR(data->vdd_int)) {
- dev_err(dev, "Cannot get the regulator \"vdd_int\"\n");
- return PTR_ERR(data->vdd_int);
- }
- if (data->type == TYPE_BUSF_EXYNOS4x12) {
- data->vdd_mif = devm_regulator_get(dev, "vdd_mif");
- if (IS_ERR(data->vdd_mif)) {
- dev_err(dev, "Cannot get the regulator \"vdd_mif\"\n");
- return PTR_ERR(data->vdd_mif);
- }
- }
-
- rcu_read_lock();
- opp = opp_find_freq_floor(dev, &exynos4_devfreq_profile.initial_freq);
- if (IS_ERR(opp)) {
- rcu_read_unlock();
- dev_err(dev, "Invalid initial frequency %lu kHz.\n",
- exynos4_devfreq_profile.initial_freq);
- return PTR_ERR(opp);
- }
- data->curr_oppinfo.rate = opp_get_freq(opp);
- data->curr_oppinfo.volt = opp_get_voltage(opp);
- rcu_read_unlock();
-
- platform_set_drvdata(pdev, data);
-
- busfreq_mon_reset(data);
-
- data->devfreq = devfreq_add_device(dev, &exynos4_devfreq_profile,
- "simple_ondemand", NULL);
- if (IS_ERR(data->devfreq))
- return PTR_ERR(data->devfreq);
-
- devfreq_register_opp_notifier(dev, data->devfreq);
-
- err = register_pm_notifier(&data->pm_notifier);
- if (err) {
- dev_err(dev, "Failed to setup pm notifier\n");
- devfreq_remove_device(data->devfreq);
- return err;
- }
-
- return 0;
-}
-
-static int exynos4_busfreq_remove(struct platform_device *pdev)
-{
- struct busfreq_data *data = platform_get_drvdata(pdev);
-
- unregister_pm_notifier(&data->pm_notifier);
- devfreq_remove_device(data->devfreq);
-
- return 0;
-}
-
-static int exynos4_busfreq_resume(struct device *dev)
-{
- struct busfreq_data *data = dev_get_drvdata(dev);
-
- busfreq_mon_reset(data);
- return 0;
-}
-
-static const struct dev_pm_ops exynos4_busfreq_pm = {
- .resume = exynos4_busfreq_resume,
-};
-
-static const struct platform_device_id exynos4_busfreq_id[] = {
- { "exynos4210-busfreq", TYPE_BUSF_EXYNOS4210 },
- { "exynos4412-busfreq", TYPE_BUSF_EXYNOS4x12 },
- { "exynos4212-busfreq", TYPE_BUSF_EXYNOS4x12 },
- { },
-};
-
-static struct platform_driver exynos4_busfreq_driver = {
- .probe = exynos4_busfreq_probe,
- .remove = exynos4_busfreq_remove,
- .id_table = exynos4_busfreq_id,
- .driver = {
- .name = "exynos4-busfreq",
- .owner = THIS_MODULE,
- .pm = &exynos4_busfreq_pm,
- },
-};
-
-static int __init exynos4_busfreq_init(void)
-{
- return platform_driver_register(&exynos4_busfreq_driver);
-}
-late_initcall(exynos4_busfreq_init);
-
-static void __exit exynos4_busfreq_exit(void)
-{
- platform_driver_unregister(&exynos4_busfreq_driver);
-}
-module_exit(exynos4_busfreq_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("EXYNOS4 busfreq driver with devfreq framework");
-MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
static void handle_hotplug_event_bridge (acpi_handle, u32, void *);
static void acpiphp_sanitize_bus(struct pci_bus *bus);
static void acpiphp_set_hpp_values(struct pci_bus *bus);
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context);
static void handle_hotplug_event_func(acpi_handle handle, u32 type, void *context);
static void free_bridge(struct kref *kref);
static const struct acpi_dock_ops acpiphp_dock_ops = {
- .handler = handle_hotplug_event_func,
+ .handler = hotplug_event_func,
};
/* Check whether the PCI device is managed by native PCIe hotplug driver */
return true;
}
+static void acpiphp_dock_init(void *data)
+{
+ struct acpiphp_func *func = data;
+
+ get_bridge(func->slot->bridge);
+}
+
+static void acpiphp_dock_release(void *data)
+{
+ struct acpiphp_func *func = data;
+
+ put_bridge(func->slot->bridge);
+}
+
/* callback routine to register each ACPI PCI slot object */
static acpi_status
register_slot(acpi_handle handle, u32 lvl, void *context, void **rv)
*/
newfunc->flags &= ~FUNC_HAS_EJ0;
if (register_hotplug_dock_device(handle,
- &acpiphp_dock_ops, newfunc))
+ &acpiphp_dock_ops, newfunc,
+ acpiphp_dock_init, acpiphp_dock_release))
dbg("failed to register dock device\n");
/* we need to be notified when dock events happen
struct pci_bus *bus = slot->bridge->pci_bus;
struct acpiphp_func *func;
int num, max, pass;
+ LIST_HEAD(add_list);
if (slot->flags & SLOT_ENABLED)
goto err_exit;
max = pci_scan_bridge(bus, dev, max, pass);
if (pass && dev->subordinate) {
check_hotplug_bridge(slot, dev);
- pci_bus_size_bridges(dev->subordinate);
+ pcibios_resource_survey_bus(dev->subordinate);
+ __pci_bus_size_bridges(dev->subordinate,
+ &add_list);
}
}
}
}
- pci_bus_assign_resources(bus);
+ __pci_bus_assign_resources(bus, &add_list, NULL);
acpiphp_sanitize_bus(bus);
acpiphp_set_hpp_values(bus);
acpiphp_set_acpi_region(slot);
alloc_acpi_hp_work(handle, type, context, _handle_hotplug_event_bridge);
}
-static void _handle_hotplug_event_func(struct work_struct *work)
+static void hotplug_event_func(acpi_handle handle, u32 type, void *context)
{
- struct acpiphp_func *func;
+ struct acpiphp_func *func = context;
char objname[64];
struct acpi_buffer buffer = { .length = sizeof(objname),
.pointer = objname };
- struct acpi_hp_work *hp_work;
- acpi_handle handle;
- u32 type;
-
- hp_work = container_of(work, struct acpi_hp_work, work);
- handle = hp_work->handle;
- type = hp_work->type;
- func = (struct acpiphp_func *)hp_work->context;
-
- acpi_scan_lock_acquire();
acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
warn("notify_handler: unknown event type 0x%x for %s\n", type, objname);
break;
}
+}
+
+static void _handle_hotplug_event_func(struct work_struct *work)
+{
+ struct acpi_hp_work *hp_work;
+ struct acpiphp_func *func;
+
+ hp_work = container_of(work, struct acpi_hp_work, work);
+ func = hp_work->context;
+ acpi_scan_lock_acquire();
+
+ hotplug_event_func(hp_work->handle, hp_work->type, func);
acpi_scan_lock_release();
kfree(hp_work); /* allocated in handle_hotplug_event_func */
struct resource *res, unsigned int reg);
int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
void pci_configure_ari(struct pci_dev *dev);
+void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+ struct list_head *realloc_head);
+void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
+ struct list_head *realloc_head,
+ struct list_head *fail_head);
/**
* pci_ari_enabled - query ARI forwarding status
;
}
-static void __ref __pci_bus_size_bridges(struct pci_bus *bus,
+void __ref __pci_bus_size_bridges(struct pci_bus *bus,
struct list_head *realloc_head)
{
struct pci_dev *dev;
}
EXPORT_SYMBOL(pci_bus_size_bridges);
-static void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
- struct list_head *realloc_head,
- struct list_head *fail_head)
+void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
+ struct list_head *realloc_head,
+ struct list_head *fail_head)
{
struct pci_bus *b;
struct pci_dev *dev;
res->start = -1;
res->end = -1;
+ if (!rule->map) {
+ res->flags |= IORESOURCE_DISABLED;
+ pnp_dbg(&dev->dev, " dma %d disabled\n", idx);
+ goto __add;
+ }
+
for (i = 0; i < 8; i++) {
if (rule->map & (1 << xtab[i])) {
res->start = res->end = xtab[i];
goto __add;
}
}
-#ifdef MAX_DMA_CHANNELS
- res->start = res->end = MAX_DMA_CHANNELS;
-#endif
- res->flags |= IORESOURCE_DISABLED;
- pnp_dbg(&dev->dev, " disable dma %d\n", idx);
+
+ pnp_dbg(&dev->dev, " couldn't assign dma %d\n", idx);
+ return -EBUSY;
__add:
pnp_add_dma_resource(dev, res->start, res->flags);
#include <linux/pm_runtime.h>
#include <linux/power/smartreflex.h>
-#define SMARTREFLEX_NAME_LEN 16
+#define DRIVER_NAME "smartreflex"
+#define SMARTREFLEX_NAME_LEN 32
#define NVALUE_NAME_LEN 40
#define SR_DISABLE_TIMEOUT 200
static int sr_late_init(struct omap_sr *sr_info)
{
struct omap_sr_data *pdata = sr_info->pdev->dev.platform_data;
- struct resource *mem;
int ret = 0;
if (sr_class->notify && sr_class->notify_flags && sr_info->irq) {
- ret = request_irq(sr_info->irq, sr_interrupt,
- 0, sr_info->name, sr_info);
+ ret = devm_request_irq(&sr_info->pdev->dev, sr_info->irq,
+ sr_interrupt, 0, sr_info->name, sr_info);
if (ret)
goto error;
disable_irq(sr_info->irq);
return ret;
error:
- iounmap(sr_info->base);
- mem = platform_get_resource(sr_info->pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, resource_size(mem));
list_del(&sr_info->node);
dev_err(&sr_info->pdev->dev, "%s: ERROR in registering"
"interrupt handler. Smartreflex will"
"not function as desired\n", __func__);
- kfree(sr_info);
return ret;
}
/* Public Functions */
/**
- * sr_configure_errgen() - Configures the smrtreflex to perform AVS using the
+ * sr_configure_errgen() - Configures the SmartReflex to perform AVS using the
* error generator module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* configure the error generator module inside the smartreflex module.
* SR CLASS 2 can choose between ERROR module and MINMAXAVG
* module. Returns 0 on success and error value in case of failure.
*/
-int sr_configure_errgen(struct voltagedomain *voltdm)
+int sr_configure_errgen(struct omap_sr *sr)
{
u32 sr_config, sr_errconfig, errconfig_offs;
u32 vpboundint_en, vpboundint_st;
u32 senp_en = 0, senn_en = 0;
u8 senp_shift, senn_shift;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
if (!sr->clk_length)
/**
* sr_disable_errgen() - Disables SmartReflex AVS module's errgen component
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* disable the error generator module inside the smartreflex module.
*
* Returns 0 on success and error value in case of failure.
*/
-int sr_disable_errgen(struct voltagedomain *voltdm)
+int sr_disable_errgen(struct omap_sr *sr)
{
u32 errconfig_offs;
u32 vpboundint_en, vpboundint_st;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
switch (sr->ip_type) {
return -EINVAL;
}
- /* Disable the interrupts of ERROR module */
- sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);
-
/* Disable the Sensor and errorgen */
sr_modify_reg(sr, SRCONFIG, SRCONFIG_SENENABLE | SRCONFIG_ERRGEN_EN, 0);
+ /*
+ * Disable the interrupts of ERROR module
+ * NOTE: modify is a read, modify,write - an implicit OCP barrier
+ * which is required is present here - sequencing is critical
+ * at this point (after errgen is disabled, vpboundint disable)
+ */
+ sr_modify_reg(sr, errconfig_offs, vpboundint_en | vpboundint_st, 0);
+
return 0;
}
/**
- * sr_configure_minmax() - Configures the smrtreflex to perform AVS using the
+ * sr_configure_minmax() - Configures the SmartReflex to perform AVS using the
* minmaxavg module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: SR module to be configured.
*
* This API is to be called from the smartreflex class driver to
* configure the minmaxavg module inside the smartreflex module.
* SR CLASS 2 can choose between ERROR module and MINMAXAVG
* module. Returns 0 on success and error value in case of failure.
*/
-int sr_configure_minmax(struct voltagedomain *voltdm)
+int sr_configure_minmax(struct omap_sr *sr)
{
u32 sr_config, sr_avgwt;
u32 senp_en = 0, senn_en = 0;
u8 senp_shift, senn_shift;
- struct omap_sr *sr = _sr_lookup(voltdm);
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
if (!sr->clk_length)
/**
* sr_enable() - Enables the smartreflex module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: pointer to which the SR module to be configured belongs to.
* @volt: The voltage at which the Voltage domain associated with
* the smartreflex module is operating at.
* This is required only to program the correct Ntarget value.
* enable a smartreflex module. Returns 0 on success. Returns error
* value if the voltage passed is wrong or if ntarget value is wrong.
*/
-int sr_enable(struct voltagedomain *voltdm, unsigned long volt)
+int sr_enable(struct omap_sr *sr, unsigned long volt)
{
struct omap_volt_data *volt_data;
- struct omap_sr *sr = _sr_lookup(voltdm);
struct omap_sr_nvalue_table *nvalue_row;
int ret;
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
- return PTR_ERR(sr);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
+ return -EINVAL;
}
volt_data = omap_voltage_get_voltdata(sr->voltdm, volt);
/**
* sr_disable() - Disables the smartreflex module.
- * @voltdm: VDD pointer to which the SR module to be configured belongs to.
+ * @sr: pointer to which the SR module to be configured belongs to.
*
* This API is to be called from the smartreflex class driver to
* disable a smartreflex module.
*/
-void sr_disable(struct voltagedomain *voltdm)
+void sr_disable(struct omap_sr *sr)
{
- struct omap_sr *sr = _sr_lookup(voltdm);
-
- if (IS_ERR(sr)) {
- pr_warning("%s: omap_sr struct for voltdm not found\n", __func__);
+ if (!sr) {
+ pr_warn("%s: NULL omap_sr from %pF\n", __func__,
+ (void *)_RET_IP_);
return;
}
struct dentry *nvalue_dir;
int i, ret = 0;
- sr_info = kzalloc(sizeof(struct omap_sr), GFP_KERNEL);
+ sr_info = devm_kzalloc(&pdev->dev, sizeof(struct omap_sr), GFP_KERNEL);
if (!sr_info) {
dev_err(&pdev->dev, "%s: unable to allocate sr_info\n",
__func__);
return -ENOMEM;
}
+ sr_info->name = devm_kzalloc(&pdev->dev,
+ SMARTREFLEX_NAME_LEN, GFP_KERNEL);
+ if (!sr_info->name) {
+ dev_err(&pdev->dev, "%s: unable to allocate SR instance name\n",
+ __func__);
+ return -ENOMEM;
+ }
+
platform_set_drvdata(pdev, sr_info);
if (!pdata) {
dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
- ret = -EINVAL;
- goto err_free_devinfo;
+ return -EINVAL;
}
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem) {
- dev_err(&pdev->dev, "%s: no mem resource\n", __func__);
- ret = -ENODEV;
- goto err_free_devinfo;
- }
-
- mem = request_mem_region(mem->start, resource_size(mem),
- dev_name(&pdev->dev));
- if (!mem) {
- dev_err(&pdev->dev, "%s: no mem region\n", __func__);
- ret = -EBUSY;
- goto err_free_devinfo;
+ sr_info->base = devm_ioremap_resource(&pdev->dev, mem);
+ if (IS_ERR(sr_info->base)) {
+ dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
+ return PTR_ERR(sr_info->base);
}
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
pm_runtime_enable(&pdev->dev);
pm_runtime_irq_safe(&pdev->dev);
- sr_info->name = kasprintf(GFP_KERNEL, "%s", pdata->name);
- if (!sr_info->name) {
- dev_err(&pdev->dev, "%s: Unable to alloc SR instance name\n",
- __func__);
- ret = -ENOMEM;
- goto err_release_region;
- }
+ snprintf(sr_info->name, SMARTREFLEX_NAME_LEN, "%s", pdata->name);
sr_info->pdev = pdev;
sr_info->srid = pdev->id;
sr_info->autocomp_active = false;
sr_info->ip_type = pdata->ip_type;
- sr_info->base = ioremap(mem->start, resource_size(mem));
- if (!sr_info->base) {
- dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
- ret = -ENOMEM;
- goto err_free_name;
- }
-
if (irq)
sr_info->irq = irq->start;
ret = sr_late_init(sr_info);
if (ret) {
pr_warning("%s: Error in SR late init\n", __func__);
- goto err_iounmap;
+ goto err_list_del;
}
}
ret = PTR_ERR(sr_dbg_dir);
pr_err("%s:sr debugfs dir creation failed(%d)\n",
__func__, ret);
- goto err_iounmap;
+ goto err_list_del;
}
}
err_debugfs:
debugfs_remove_recursive(sr_info->dbg_dir);
-err_iounmap:
+err_list_del:
list_del(&sr_info->node);
- iounmap(sr_info->base);
-err_free_name:
- kfree(sr_info->name);
-err_release_region:
- release_mem_region(mem->start, resource_size(mem));
-err_free_devinfo:
- kfree(sr_info);
-
return ret;
}
{
struct omap_sr_data *pdata = pdev->dev.platform_data;
struct omap_sr *sr_info;
- struct resource *mem;
if (!pdata) {
dev_err(&pdev->dev, "%s: platform data missing\n", __func__);
if (sr_info->dbg_dir)
debugfs_remove_recursive(sr_info->dbg_dir);
+ pm_runtime_disable(&pdev->dev);
list_del(&sr_info->node);
- iounmap(sr_info->base);
- kfree(sr_info->name);
- kfree(sr_info);
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(mem->start, resource_size(mem));
-
return 0;
}
.remove = omap_sr_remove,
.shutdown = omap_sr_shutdown,
.driver = {
- .name = "smartreflex",
+ .name = DRIVER_NAME,
},
};
#include <asm/cacheflush.h>
#include <linux/fdtable.h>
#include <linux/file.h>
+#include <linux/freezer.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/miscdevice.h>
if (!binder_has_proc_work(proc, thread))
ret = -EAGAIN;
} else
- ret = wait_event_interruptible_exclusive(proc->wait, binder_has_proc_work(proc, thread));
+ ret = wait_event_freezable_exclusive(proc->wait, binder_has_proc_work(proc, thread));
} else {
if (non_block) {
if (!binder_has_thread_work(thread))
ret = -EAGAIN;
} else
- ret = wait_event_interruptible(thread->wait, binder_has_thread_work(thread));
+ ret = wait_event_freezable(thread->wait, binder_has_thread_work(thread));
}
binder_lock(__func__);
{
int error;
- error = wait_event_freezekillable(server->response_q,
+ error = wait_event_freezekillable_unsafe(server->response_q,
midQ->mid_state != MID_REQUEST_SUBMITTED);
if (error < 0)
return -ERESTARTSYS;
#include <linux/mutex.h>
#include <linux/anon_inodes.h>
#include <linux/device.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
#include <asm/io.h>
#include <asm/mman.h>
}
spin_unlock_irqrestore(&ep->lock, flags);
- if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))
+ if (!freezable_schedule_hrtimeout_range(to, slack,
+ HRTIMER_MODE_ABS))
timed_out = 1;
spin_lock_irqsave(&ep->lock, flags);
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
EXPORT_SYMBOL_GPL(nfs_wait_bit_killable);
res = rpc_call_sync(clnt, msg, flags);
if (res != -EJUKEBOX)
break;
- freezable_schedule_timeout_killable(NFS_JUKEBOX_RETRY_TIME);
+ freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
res = -ERESTARTSYS;
} while (!fatal_signal_pending(current));
return res;
*timeout = NFS4_POLL_RETRY_MIN;
if (*timeout > NFS4_POLL_RETRY_MAX)
*timeout = NFS4_POLL_RETRY_MAX;
- freezable_schedule_timeout_killable(*timeout);
+ freezable_schedule_timeout_killable_unsafe(*timeout);
if (fatal_signal_pending(current))
res = -ERESTARTSYS;
*timeout <<= 1;
static unsigned long
nfs4_set_lock_task_retry(unsigned long timeout)
{
- freezable_schedule_timeout_killable(timeout);
+ freezable_schedule_timeout_killable_unsafe(timeout);
timeout <<= 1;
if (timeout > NFS4_LOCK_MAXTIMEOUT)
return NFS4_LOCK_MAXTIMEOUT;
#include <linux/rcupdate.h>
#include <linux/hrtimer.h>
#include <linux/sched/rt.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
set_current_state(state);
if (!pwq->triggered)
- rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);
+ rc = freezable_schedule_hrtimeout_range(expires, slack,
+ HRTIMER_MODE_ABS);
__set_current_state(TASK_RUNNING);
/*
*
*****************************************************************************/
-#define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */
-#define ACPI_DB_LINE_BUFFER_SIZE 512
+#define ACPI_DEBUGGER_MAX_ARGS ACPI_METHOD_NUM_ARGS + 4 /* Max command line arguments */
+#define ACPI_DB_LINE_BUFFER_SIZE 512
#define ACPI_DEBUGGER_COMMAND_PROMPT '-'
#define ACPI_DEBUGGER_EXECUTE_PROMPT '%'
* This is the non-debug case -- make everything go away,
* leaving no executable debug code!
*/
-#define ACPI_FUNCTION_NAME(a)
#define ACPI_DEBUG_PRINT(pl)
#define ACPI_DEBUG_PRINT_RAW(pl)
#define ACPI_DEBUG_EXEC(a)
#define ACPI_DEBUG_ONLY_MEMBERS(a)
+#define ACPI_FUNCTION_NAME(a)
#define ACPI_FUNCTION_TRACE(a)
#define ACPI_FUNCTION_TRACE_PTR(a, b)
#define ACPI_FUNCTION_TRACE_U32(a, b)
#define ACPI_FUNCTION_TRACE_STR(a, b)
-#define ACPI_FUNCTION_EXIT
-#define ACPI_FUNCTION_STATUS_EXIT(s)
-#define ACPI_FUNCTION_VALUE_EXIT(s)
#define ACPI_FUNCTION_ENTRY()
#define ACPI_DUMP_STACK_ENTRY(a)
#define ACPI_DUMP_OPERANDS(a, b, c)
#define ACPI_DUMP_ENTRY(a, b)
-#define ACPI_DUMP_TABLES(a, b)
#define ACPI_DUMP_PATHNAME(a, b, c, d)
#define ACPI_DUMP_BUFFER(a, b)
-#define ACPI_DEBUG_PRINT(pl)
-#define ACPI_DEBUG_PRINT_RAW(pl)
#define ACPI_IS_DEBUG_ENABLED(level, component) 0
/* Return macros must have a return statement at the minimum */
#define ACPI_BUS_FILE_ROOT "acpi"
extern struct proc_dir_entry *acpi_root_dir;
-enum acpi_bus_removal_type {
- ACPI_BUS_REMOVAL_NORMAL = 0,
- ACPI_BUS_REMOVAL_EJECT,
- ACPI_BUS_REMOVAL_SUPRISE,
- ACPI_BUS_REMOVAL_TYPE_COUNT
-};
-
enum acpi_bus_device_type {
ACPI_BUS_TYPE_DEVICE = 0,
ACPI_BUS_TYPE_POWER,
u32 dynamic_status:1;
u32 removable:1;
u32 ejectable:1;
- u32 suprise_removal_ok:1;
u32 power_manageable:1;
- u32 performance_manageable:1;
u32 eject_pending:1;
u32 match_driver:1;
- u32 reserved:24;
+ u32 reserved:26;
};
/* File System */
u8 node_id;
struct list_head node;
struct device *dev;
+ bool put_online:1;
};
/* set maximum of physical nodes to 32 for expansibility */
struct acpi_driver *driver;
void *driver_data;
struct device dev;
- enum acpi_bus_removal_type removal_type; /* indicate for different removal type */
u8 physical_node_count;
struct list_head physical_node_list;
struct mutex physical_node_lock;
acpi_notify_handler handler, void *context);
acpi_status acpi_remove_pm_notifier(struct acpi_device *adev,
acpi_notify_handler handler);
-int acpi_device_power_state(struct device *dev, struct acpi_device *adev,
- u32 target_state, int d_max_in, int *d_min_p);
int acpi_pm_device_sleep_state(struct device *, int *, int);
void acpi_dev_pm_add_dependent(acpi_handle handle, struct device *depdev);
void acpi_dev_pm_remove_dependent(acpi_handle handle, struct device *depdev);
{
return AE_SUPPORT;
}
-static inline int __acpi_device_power_state(int m, int *p)
+static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
{
if (p)
*p = ACPI_STATE_D0;
+
return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3) ? m : ACPI_STATE_D0;
}
-static inline int acpi_device_power_state(struct device *dev,
- struct acpi_device *adev,
- u32 target_state, int d_max_in,
- int *d_min_p)
-{
- return __acpi_device_power_state(d_max_in, d_min_p);
-}
-static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m)
-{
- return __acpi_device_power_state(m, p);
-}
static inline void acpi_dev_pm_add_dependent(acpi_handle handle,
struct device *depdev) {}
static inline void acpi_dev_pm_remove_dependent(acpi_handle handle,
extern void unregister_dock_notifier(struct notifier_block *nb);
extern int register_hotplug_dock_device(acpi_handle handle,
const struct acpi_dock_ops *ops,
- void *context);
+ void *context,
+ void (*init)(void *),
+ void (*release)(void *));
extern void unregister_hotplug_dock_device(acpi_handle handle);
#else
static inline int is_dock_device(acpi_handle handle)
}
static inline int register_hotplug_dock_device(acpi_handle handle,
const struct acpi_dock_ops *ops,
- void *context)
+ void *context,
+ void (*init)(void *),
+ void (*release)(void *))
{
return -ENODEV;
}
/* Current ACPICA subsystem version in YYYYMMDD format */
-#define ACPI_CA_VERSION 0x20130328
+#define ACPI_CA_VERSION 0x20130517
#include <acpi/acconfig.h>
#include <acpi/actypes.h>
extern u8 acpi_gbl_copy_dsdt_locally;
extern u8 acpi_gbl_truncate_io_addresses;
extern u8 acpi_gbl_disable_auto_repair;
+extern u8 acpi_gbl_disable_ssdt_table_load;
/*
* Hardware-reduced prototypes. All interfaces that use these macros will
#include <linux/thermal.h>
#include <asm/acpi.h>
+#define ACPI_PROCESSOR_CLASS "processor"
+#define ACPI_PROCESSOR_DEVICE_NAME "Processor"
+#define ACPI_PROCESSOR_DEVICE_HID "ACPI0007"
+
#define ACPI_PROCESSOR_BUSY_METRIC 10
#define ACPI_PROCESSOR_MAX_POWER 8
struct acpi_processor_throttling throttling;
struct acpi_processor_limit limit;
struct thermal_cooling_device *cdev;
+ struct device *dev; /* Processor device. */
};
struct acpi_processor_errata {
/* Enable _OST when all relevant hotplug operations are enabled */
#if defined(CONFIG_ACPI_HOTPLUG_CPU) && \
- (defined(CONFIG_ACPI_HOTPLUG_MEMORY) || \
- defined(CONFIG_ACPI_HOTPLUG_MEMORY_MODULE)) && \
+ defined(CONFIG_ACPI_HOTPLUG_MEMORY) && \
defined(CONFIG_ACPI_CONTAINER)
#define ACPI_HOTPLUG_OST
#endif
struct cpuidle_state states[CPUIDLE_STATE_MAX];
int state_count;
int safe_state_index;
+
+ /* the driver handles the cpus in cpumask */
+ struct cpumask *cpumask;
};
#ifdef CONFIG_CPU_IDLE
extern int cpuidle_play_dead(void);
extern struct cpuidle_driver *cpuidle_get_cpu_driver(struct cpuidle_device *dev);
-extern int cpuidle_register_cpu_driver(struct cpuidle_driver *drv, int cpu);
-extern void cpuidle_unregister_cpu_driver(struct cpuidle_driver *drv, int cpu);
-
#else
static inline void disable_cpuidle(void) { }
static inline int cpuidle_idle_call(void) { return -ENODEV; }
extern void debug_show_all_locks(void);
extern void debug_show_held_locks(struct task_struct *task);
extern void debug_check_no_locks_freed(const void *from, unsigned long len);
-extern void debug_check_no_locks_held(struct task_struct *task);
+extern void debug_check_no_locks_held(void);
#else
static inline void debug_show_all_locks(void)
{
}
static inline void
-debug_check_no_locks_held(struct task_struct *task)
+debug_check_no_locks_held(void)
{
}
#endif
const char *governor_name,
void *data);
extern int devfreq_remove_device(struct devfreq *devfreq);
+
+/* Supposed to be called by PM_SLEEP/PM_RUNTIME callbacks */
extern int devfreq_suspend_device(struct devfreq *devfreq);
extern int devfreq_resume_device(struct devfreq *devfreq);
* the specific driver's probe to initial the matched device.
* @remove: Called when a device removed from this bus.
* @shutdown: Called at shut-down time to quiesce the device.
+ *
+ * @online: Called to put the device back online (after offlining it).
+ * @offline: Called to put the device offline for hot-removal. May fail.
+ *
* @suspend: Called when a device on this bus wants to go to sleep mode.
* @resume: Called to bring a device on this bus out of sleep mode.
* @pm: Power management operations of this bus, callback the specific
int (*remove)(struct device *dev);
void (*shutdown)(struct device *dev);
+ int (*online)(struct device *dev);
+ int (*offline)(struct device *dev);
+
int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev);
* @release: Callback to free the device after all references have
* gone away. This should be set by the allocator of the
* device (i.e. the bus driver that discovered the device).
+ * @offline_disabled: If set, the device is permanently online.
+ * @offline: Set after successful invocation of bus type's .offline().
*
* At the lowest level, every device in a Linux system is represented by an
* instance of struct device. The device structure contains the information
void (*release)(struct device *dev);
struct iommu_group *iommu_group;
+
+ bool offline_disabled:1;
+ bool offline:1;
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
extern void *dev_get_drvdata(const struct device *dev);
extern int dev_set_drvdata(struct device *dev, void *data);
+static inline bool device_supports_offline(struct device *dev)
+{
+ return dev->bus && dev->bus->offline && dev->bus->online;
+}
+
+extern void lock_device_hotplug(void);
+extern void unlock_device_hotplug(void);
+extern int device_offline(struct device *dev);
+extern int device_online(struct device *dev);
/*
* Root device objects for grouping under /sys/devices
*/
#ifndef FREEZER_H_INCLUDED
#define FREEZER_H_INCLUDED
+#include <linux/debug_locks.h>
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/atomic.h>
extern void thaw_processes(void);
extern void thaw_kernel_threads(void);
-static inline bool try_to_freeze(void)
+/*
+ * DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION
+ * If try_to_freeze causes a lockdep warning it means the caller may deadlock
+ */
+static inline bool try_to_freeze_unsafe(void)
{
might_sleep();
if (likely(!freezing(current)))
return __refrigerator(false);
}
+static inline bool try_to_freeze(void)
+{
+ if (!(current->flags & PF_NOFREEZE))
+ debug_check_no_locks_held();
+ return try_to_freeze_unsafe();
+}
+
extern bool freeze_task(struct task_struct *p);
extern bool set_freezable(void);
try_to_freeze();
}
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline void freezer_count_unsafe(void)
+{
+ current->flags &= ~PF_FREEZER_SKIP;
+ smp_mb();
+ try_to_freeze_unsafe();
+}
+
/**
* freezer_should_skip - whether to skip a task when determining frozen
* state is reached
}
/*
- * These macros are intended to be used whenever you want allow a sleeping
+ * These functions are intended to be used whenever you want allow a sleeping
* task to be frozen. Note that neither return any clear indication of
* whether a freeze event happened while in this function.
*/
/* Like schedule(), but should not block the freezer. */
-#define freezable_schedule() \
-({ \
- freezer_do_not_count(); \
- schedule(); \
- freezer_count(); \
-})
+static inline void freezable_schedule(void)
+{
+ freezer_do_not_count();
+ schedule();
+ freezer_count();
+}
+
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline void freezable_schedule_unsafe(void)
+{
+ freezer_do_not_count();
+ schedule();
+ freezer_count_unsafe();
+}
+
+/*
+ * Like freezable_schedule_timeout(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline long freezable_schedule_timeout(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout(timeout);
+ freezer_count();
+ return __retval;
+}
+
+/*
+ * Like schedule_timeout_interruptible(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline long freezable_schedule_timeout_interruptible(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_interruptible(timeout);
+ freezer_count();
+ return __retval;
+}
/* Like schedule_timeout_killable(), but should not block the freezer. */
-#define freezable_schedule_timeout_killable(timeout) \
-({ \
- long __retval; \
- freezer_do_not_count(); \
- __retval = schedule_timeout_killable(timeout); \
- freezer_count(); \
- __retval; \
-})
+static inline long freezable_schedule_timeout_killable(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_killable(timeout);
+ freezer_count();
+ return __retval;
+}
+
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+static inline long freezable_schedule_timeout_killable_unsafe(long timeout)
+{
+ long __retval;
+ freezer_do_not_count();
+ __retval = schedule_timeout_killable(timeout);
+ freezer_count_unsafe();
+ return __retval;
+}
+
+/*
+ * Like schedule_hrtimeout_range(), but should not block the freezer. Do not
+ * call this with locks held.
+ */
+static inline int freezable_schedule_hrtimeout_range(ktime_t *expires,
+ unsigned long delta, const enum hrtimer_mode mode)
+{
+ int __retval;
+ freezer_do_not_count();
+ __retval = schedule_hrtimeout_range(expires, delta, mode);
+ freezer_count();
+ return __retval;
+}
/*
* Freezer-friendly wrappers around wait_event_interruptible(),
__retval; \
})
+/* DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION */
+#define wait_event_freezekillable_unsafe(wq, condition) \
+({ \
+ int __retval; \
+ freezer_do_not_count(); \
+ __retval = wait_event_killable(wq, (condition)); \
+ freezer_count_unsafe(); \
+ __retval; \
+})
+
#define wait_event_freezable(wq, condition) \
({ \
int __retval; \
- for (;;) { \
- __retval = wait_event_interruptible(wq, \
- (condition) || freezing(current)); \
- if (__retval || (condition)) \
- break; \
- try_to_freeze(); \
- } \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible(wq, (condition)); \
+ freezer_count(); \
__retval; \
})
#define wait_event_freezable_timeout(wq, condition, timeout) \
({ \
long __retval = timeout; \
- for (;;) { \
- __retval = wait_event_interruptible_timeout(wq, \
- (condition) || freezing(current), \
- __retval); \
- if (__retval <= 0 || (condition)) \
- break; \
- try_to_freeze(); \
- } \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible_timeout(wq, (condition), \
+ __retval); \
+ freezer_count(); \
__retval; \
})
+#define wait_event_freezable_exclusive(wq, condition) \
+({ \
+ int __retval; \
+ freezer_do_not_count(); \
+ __retval = wait_event_interruptible_exclusive(wq, condition); \
+ freezer_count(); \
+ __retval; \
+})
+
+
#else /* !CONFIG_FREEZER */
static inline bool frozen(struct task_struct *p) { return false; }
static inline bool freezing(struct task_struct *p) { return false; }
#define freezable_schedule() schedule()
+#define freezable_schedule_unsafe() schedule()
+
+#define freezable_schedule_timeout(timeout) schedule_timeout(timeout)
+
+#define freezable_schedule_timeout_interruptible(timeout) \
+ schedule_timeout_interruptible(timeout)
+
#define freezable_schedule_timeout_killable(timeout) \
schedule_timeout_killable(timeout)
+#define freezable_schedule_timeout_killable_unsafe(timeout) \
+ schedule_timeout_killable(timeout)
+
+#define freezable_schedule_hrtimeout_range(expires, delta, mode) \
+ schedule_hrtimeout_range(expires, delta, mode)
+
#define wait_event_freezable(wq, condition) \
wait_event_interruptible(wq, condition)
#define wait_event_freezable_timeout(wq, condition, timeout) \
wait_event_interruptible_timeout(wq, condition, timeout)
+#define wait_event_freezable_exclusive(wq, condition) \
+ wait_event_interruptible_exclusive(wq, condition)
+
#define wait_event_freezekillable(wq, condition) \
wait_event_killable(wq, condition)
+#define wait_event_freezekillable_unsafe(wq, condition) \
+ wait_event_killable(wq, condition)
+
#endif /* !CONFIG_FREEZER */
#endif /* FREEZER_H_INCLUDED */
extern int is_mem_section_removable(unsigned long pfn, unsigned long nr_pages);
extern void try_offline_node(int nid);
+extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
+extern void remove_memory(int nid, u64 start, u64 size);
#else
static inline int is_mem_section_removable(unsigned long pfn,
}
static inline void try_offline_node(int nid) {}
+
+static inline int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
+{
+ return -EINVAL;
+}
+
+static inline void remove_memory(int nid, u64 start, u64 size) {}
#endif /* CONFIG_MEMORY_HOTREMOVE */
+extern int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
+ void *arg, int (*func)(struct memory_block *, void *));
extern int mem_online_node(int nid);
extern int add_memory(int nid, u64 start, u64 size);
extern int arch_add_memory(int nid, u64 start, u64 size);
extern int offline_pages(unsigned long start_pfn, unsigned long nr_pages);
-extern int offline_memory_block(struct memory_block *mem);
extern bool is_memblock_offlined(struct memory_block *mem);
-extern int remove_memory(int nid, u64 start, u64 size);
+extern void remove_memory(int nid, u64 start, u64 size);
extern int sparse_add_one_section(struct zone *zone, unsigned long start_pfn,
int nr_pages);
extern void sparse_remove_one_section(struct zone *zone, struct mem_section *ms);
void omap_sr_register_pmic(struct omap_sr_pmic_data *pmic_data);
/* Smartreflex driver hooks to be called from Smartreflex class driver */
-int sr_enable(struct voltagedomain *voltdm, unsigned long volt);
-void sr_disable(struct voltagedomain *voltdm);
-int sr_configure_errgen(struct voltagedomain *voltdm);
-int sr_disable_errgen(struct voltagedomain *voltdm);
-int sr_configure_minmax(struct voltagedomain *voltdm);
+int sr_enable(struct omap_sr *sr, unsigned long volt);
+void sr_disable(struct omap_sr *sr);
+int sr_configure_errgen(struct omap_sr *sr);
+int sr_disable_errgen(struct omap_sr *sr);
+int sr_configure_minmax(struct omap_sr *sr);
/* API to register the smartreflex class driver with the smartreflex driver */
int sr_register_class(struct omap_sr_class_data *class_data);
int xen_acpi_notify_hypervisor_state(u8 sleep_state,
u32 pm1a_cnt, u32 pm1b_cnd);
+static inline int xen_acpi_suspend_lowlevel(void)
+{
+ /*
+ * Xen will save and restore CPU context, so
+ * we can skip that and just go straight to
+ * the suspend.
+ */
+ acpi_enter_sleep_state(ACPI_STATE_S3);
+ return 0;
+}
+
static inline void xen_acpi_sleep_register(void)
{
- if (xen_initial_domain())
+ if (xen_initial_domain()) {
acpi_os_set_prepare_sleep(
&xen_acpi_notify_hypervisor_state);
+
+ acpi_suspend_lowlevel = xen_acpi_suspend_lowlevel;
+ }
}
#else
static inline void xen_acpi_sleep_register(void)
/*
* Make sure we are holding no locks:
*/
- debug_check_no_locks_held(tsk);
+ debug_check_no_locks_held();
/*
* We can do this unlocked here. The futex code uses this flag
* just to verify whether the pi state cleanup has been done
{
unsigned long flags;
+ /*
+ * This check can race with freezer_do_not_count, but worst case that
+ * will result in an extra wakeup being sent to the task. It does not
+ * race with freezer_count(), the barriers in freezer_count() and
+ * freezer_should_skip() ensure that either freezer_count() sees
+ * freezing == true in try_to_freeze() and freezes, or
+ * freezer_should_skip() sees !PF_FREEZE_SKIP and freezes the task
+ * normally.
+ */
+ if (freezer_should_skip(p))
+ return false;
+
spin_lock_irqsave(&freezer_lock, flags);
if (!freezing(p) || frozen(p)) {
spin_unlock_irqrestore(&freezer_lock, flags);
#include <linux/nsproxy.h>
#include <linux/ptrace.h>
#include <linux/sched/rt.h>
+#include <linux/freezer.h>
#include <asm/futex.h>
* is no timeout, or if it has yet to expire.
*/
if (!timeout || timeout->task)
- schedule();
+ freezable_schedule();
}
__set_current_state(TASK_RUNNING);
}
#include <linux/sched/sysctl.h>
#include <linux/sched/rt.h>
#include <linux/timer.h>
+#include <linux/freezer.h>
#include <asm/uaccess.h>
t->task = NULL;
if (likely(t->task))
- schedule();
+ freezable_schedule();
hrtimer_cancel(&t->timer);
mode = HRTIMER_MODE_ABS;
}
EXPORT_SYMBOL_GPL(debug_check_no_locks_freed);
-static void print_held_locks_bug(struct task_struct *curr)
+static void print_held_locks_bug(void)
{
if (!debug_locks_off())
return;
printk("\n");
printk("=====================================\n");
- printk("[ BUG: lock held at task exit time! ]\n");
+ printk("[ BUG: %s/%d still has locks held! ]\n",
+ current->comm, task_pid_nr(current));
print_kernel_ident();
printk("-------------------------------------\n");
- printk("%s/%d is exiting with locks still held!\n",
- curr->comm, task_pid_nr(curr));
- lockdep_print_held_locks(curr);
-
+ lockdep_print_held_locks(current);
printk("\nstack backtrace:\n");
dump_stack();
}
-void debug_check_no_locks_held(struct task_struct *task)
+void debug_check_no_locks_held(void)
{
- if (unlikely(task->lockdep_depth > 0))
- print_held_locks_bug(task);
+ if (unlikely(current->lockdep_depth > 0))
+ print_held_locks_bug();
}
+EXPORT_SYMBOL_GPL(debug_check_no_locks_held);
void debug_show_all_locks(void)
{
unsigned int todo;
bool wq_busy = false;
struct timeval start, end;
- u64 elapsed_csecs64;
- unsigned int elapsed_csecs;
+ u64 elapsed_msecs64;
+ unsigned int elapsed_msecs;
bool wakeup = false;
+ int sleep_usecs = USEC_PER_MSEC;
do_gettimeofday(&start);
/*
* We need to retry, but first give the freezing tasks some
- * time to enter the refrigerator.
+ * time to enter the refrigerator. Start with an initial
+ * 1 ms sleep followed by exponential backoff until 8 ms.
*/
- msleep(10);
+ usleep_range(sleep_usecs / 2, sleep_usecs);
+ if (sleep_usecs < 8 * USEC_PER_MSEC)
+ sleep_usecs *= 2;
}
do_gettimeofday(&end);
- elapsed_csecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
- do_div(elapsed_csecs64, NSEC_PER_SEC / 100);
- elapsed_csecs = elapsed_csecs64;
+ elapsed_msecs64 = timeval_to_ns(&end) - timeval_to_ns(&start);
+ do_div(elapsed_msecs64, NSEC_PER_MSEC);
+ elapsed_msecs = elapsed_msecs64;
if (todo) {
printk("\n");
- printk(KERN_ERR "Freezing of tasks %s after %d.%02d seconds "
+ printk(KERN_ERR "Freezing of tasks %s after %d.%03d seconds "
"(%d tasks refusing to freeze, wq_busy=%d):\n",
wakeup ? "aborted" : "failed",
- elapsed_csecs / 100, elapsed_csecs % 100,
+ elapsed_msecs / 1000, elapsed_msecs % 1000,
todo - wq_busy, wq_busy);
if (!wakeup) {
read_unlock(&tasklist_lock);
}
} else {
- printk("(elapsed %d.%02d seconds) ", elapsed_csecs / 100,
- elapsed_csecs % 100);
+ printk("(elapsed %d.%03d seconds) ", elapsed_msecs / 1000,
+ elapsed_msecs % 1000);
}
return todo ? -EBUSY : 0;
recalc_sigpending();
spin_unlock_irq(&tsk->sighand->siglock);
- timeout = schedule_timeout_interruptible(timeout);
+ timeout = freezable_schedule_timeout_interruptible(timeout);
spin_lock_irq(&tsk->sighand->siglock);
__set_task_blocked(tsk, &tsk->real_blocked);
{
return __offline_pages(start_pfn, start_pfn + nr_pages, 120 * HZ);
}
+#endif /* CONFIG_MEMORY_HOTREMOVE */
/**
* walk_memory_range - walks through all mem sections in [start_pfn, end_pfn)
*
* Returns the return value of func.
*/
-static int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
+int walk_memory_range(unsigned long start_pfn, unsigned long end_pfn,
void *arg, int (*func)(struct memory_block *, void *))
{
struct memory_block *mem = NULL;
return 0;
}
-/**
- * offline_memory_block_cb - callback function for offlining memory block
- * @mem: the memory block to be offlined
- * @arg: buffer to hold error msg
- *
- * Always return 0, and put the error msg in arg if any.
- */
-static int offline_memory_block_cb(struct memory_block *mem, void *arg)
-{
- int *ret = arg;
- int error = offline_memory_block(mem);
-
- if (error != 0 && *ret == 0)
- *ret = error;
-
- return 0;
-}
-
+#ifdef CONFIG_MEMORY_HOTREMOVE
static int is_memblock_offlined_cb(struct memory_block *mem, void *arg)
{
int ret = !is_memblock_offlined(mem);
}
EXPORT_SYMBOL(try_offline_node);
-int __ref remove_memory(int nid, u64 start, u64 size)
+void __ref remove_memory(int nid, u64 start, u64 size)
{
- unsigned long start_pfn, end_pfn;
- int ret = 0;
- int retry = 1;
-
- start_pfn = PFN_DOWN(start);
- end_pfn = PFN_UP(start + size - 1);
-
- /*
- * When CONFIG_MEMCG is on, one memory block may be used by other
- * blocks to store page cgroup when onlining pages. But we don't know
- * in what order pages are onlined. So we iterate twice to offline
- * memory:
- * 1st iterate: offline every non primary memory block.
- * 2nd iterate: offline primary (i.e. first added) memory block.
- */
-repeat:
- walk_memory_range(start_pfn, end_pfn, &ret,
- offline_memory_block_cb);
- if (ret) {
- if (!retry)
- return ret;
-
- retry = 0;
- ret = 0;
- goto repeat;
- }
+ int ret;
lock_memory_hotplug();
/*
- * we have offlined all memory blocks like this:
- * 1. lock memory hotplug
- * 2. offline a memory block
- * 3. unlock memory hotplug
- *
- * repeat step1-3 to offline the memory block. All memory blocks
- * must be offlined before removing memory. But we don't hold the
- * lock in the whole operation. So we should check whether all
- * memory blocks are offlined.
+ * All memory blocks must be offlined before removing memory. Check
+ * whether all memory blocks in question are offline and trigger a BUG()
+ * if this is not the case.
*/
-
- ret = walk_memory_range(start_pfn, end_pfn, NULL,
+ ret = walk_memory_range(PFN_DOWN(start), PFN_UP(start + size - 1), NULL,
is_memblock_offlined_cb);
if (ret) {
unlock_memory_hotplug();
- return ret;
+ BUG();
}
/* remove memmap entry */
try_offline_node(nid);
unlock_memory_hotplug();
-
- return 0;
}
-#else
-int offline_pages(unsigned long start_pfn, unsigned long nr_pages)
-{
- return -EINVAL;
-}
-int remove_memory(int nid, u64 start, u64 size)
-{
- return -EINVAL;
-}
-#endif /* CONFIG_MEMORY_HOTREMOVE */
EXPORT_SYMBOL_GPL(remove_memory);
+#endif /* CONFIG_MEMORY_HOTREMOVE */
{
if (fatal_signal_pending(current))
return -ERESTARTSYS;
- freezable_schedule();
+ freezable_schedule_unsafe();
return 0;
}
#include <linux/mount.h>
#include <net/checksum.h>
#include <linux/security.h>
+#include <linux/freezer.h>
struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE];
EXPORT_SYMBOL_GPL(unix_socket_table);
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
unix_state_unlock(sk);
- timeo = schedule_timeout(timeo);
+ timeo = freezable_schedule_timeout(timeo);
unix_state_lock(sk);
clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
}