4 #include <linux/workqueue.h>
6 #define PCI_CFG_SPACE_SIZE 256
7 #define PCI_CFG_SPACE_EXP_SIZE 4096
9 extern const unsigned char pcix_bus_speed[];
10 extern const unsigned char pcie_link_speed[];
12 /* Functions internal to the PCI core code */
14 int pci_create_sysfs_dev_files(struct pci_dev *pdev);
15 void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
16 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
17 static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
19 static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
22 void pci_create_firmware_label_files(struct pci_dev *pdev);
23 void pci_remove_firmware_label_files(struct pci_dev *pdev);
25 void pci_cleanup_rom(struct pci_dev *dev);
28 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
29 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
31 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
32 enum pci_mmap_api mmap_api);
34 int pci_probe_reset_function(struct pci_dev *dev);
37 * struct pci_platform_pm_ops - Firmware PM callbacks
39 * @is_manageable: returns 'true' if given device is power manageable by the
42 * @set_state: invokes the platform firmware to set the device's power state
44 * @choose_state: returns PCI power state of given device preferred by the
45 * platform; to be used during system-wide transitions from a
46 * sleeping state to the working state and vice versa
48 * @sleep_wake: enables/disables the system wake up capability of given device
50 * @run_wake: enables/disables the platform to generate run-time wake-up events
51 * for given device (the device's wake-up capability has to be
52 * enabled by @sleep_wake for this feature to work)
54 * If given platform is generally capable of power managing PCI devices, all of
55 * these callbacks are mandatory.
57 struct pci_platform_pm_ops {
58 bool (*is_manageable)(struct pci_dev *dev);
59 int (*set_state)(struct pci_dev *dev, pci_power_t state);
60 pci_power_t (*choose_state)(struct pci_dev *dev);
61 int (*sleep_wake)(struct pci_dev *dev, bool enable);
62 int (*run_wake)(struct pci_dev *dev, bool enable);
65 int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
66 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
67 void pci_power_up(struct pci_dev *dev);
68 void pci_disable_enabled_device(struct pci_dev *dev);
69 int pci_finish_runtime_suspend(struct pci_dev *dev);
70 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
71 void pci_wakeup_bus(struct pci_bus *bus);
72 void pci_config_pm_runtime_get(struct pci_dev *dev);
73 void pci_config_pm_runtime_put(struct pci_dev *dev);
74 void pci_pm_init(struct pci_dev *dev);
75 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
76 void pci_free_cap_save_buffers(struct pci_dev *dev);
78 static inline void pci_wakeup_event(struct pci_dev *dev)
80 /* Wait 100 ms before the system can be put into a sleep state. */
81 pm_wakeup_event(&dev->dev, 100);
84 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
86 return !!(pci_dev->subordinate);
90 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
91 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
92 void (*release)(struct pci_dev *dev);
97 const struct pci_vpd_ops *ops;
98 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
101 int pci_vpd_pci22_init(struct pci_dev *dev);
102 static inline void pci_vpd_release(struct pci_dev *dev)
105 dev->vpd->ops->release(dev);
108 /* PCI /proc functions */
109 #ifdef CONFIG_PROC_FS
110 int pci_proc_attach_device(struct pci_dev *dev);
111 int pci_proc_detach_device(struct pci_dev *dev);
112 int pci_proc_detach_bus(struct pci_bus *bus);
114 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
115 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
116 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
119 /* Functions for PCI Hotplug drivers to use */
120 int pci_hp_add_bridge(struct pci_dev *dev);
122 #ifdef HAVE_PCI_LEGACY
123 void pci_create_legacy_files(struct pci_bus *bus);
124 void pci_remove_legacy_files(struct pci_bus *bus);
126 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
127 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
130 /* Lock for read/write access to pci device and bus lists */
131 extern struct rw_semaphore pci_bus_sem;
133 extern raw_spinlock_t pci_lock;
135 extern unsigned int pci_pm_d3_delay;
137 #ifdef CONFIG_PCI_MSI
138 void pci_no_msi(void);
139 void pci_msi_init_pci_dev(struct pci_dev *dev);
141 static inline void pci_no_msi(void) { }
142 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
145 void pci_realloc_get_opt(char *);
147 static inline int pci_no_d1d2(struct pci_dev *dev)
149 unsigned int parent_dstates = 0;
152 parent_dstates = dev->bus->self->no_d1d2;
153 return (dev->no_d1d2 || parent_dstates);
156 extern struct device_attribute pci_dev_attrs[];
157 extern struct device_attribute pcibus_dev_attrs[];
158 extern struct device_type pci_dev_type;
159 extern struct bus_attribute pci_bus_attrs[];
163 * pci_match_one_device - Tell if a PCI device structure has a matching
164 * PCI device id structure
165 * @id: single PCI device id structure to match
166 * @dev: the PCI device structure to match against
168 * Returns the matching pci_device_id structure or %NULL if there is no match.
170 static inline const struct pci_device_id *
171 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
173 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
174 (id->device == PCI_ANY_ID || id->device == dev->device) &&
175 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
176 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
177 !((id->class ^ dev->class) & id->class_mask))
182 /* PCI slot sysfs helper code */
183 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
185 extern struct kset *pci_slots_kset;
187 struct pci_slot_attribute {
188 struct attribute attr;
189 ssize_t (*show)(struct pci_slot *, char *);
190 ssize_t (*store)(struct pci_slot *, const char *, size_t);
192 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
195 pci_bar_unknown, /* Standard PCI BAR probe */
196 pci_bar_io, /* An io port BAR */
197 pci_bar_mem32, /* A 32-bit memory BAR */
198 pci_bar_mem64, /* A 64-bit memory BAR */
201 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
203 int pci_setup_device(struct pci_dev *dev);
204 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
205 struct resource *res, unsigned int reg);
206 int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
207 void pci_configure_ari(struct pci_dev *dev);
208 void __ref __pci_bus_size_bridges(struct pci_bus *bus,
209 struct list_head *realloc_head);
210 void __ref __pci_bus_assign_resources(const struct pci_bus *bus,
211 struct list_head *realloc_head,
212 struct list_head *fail_head);
215 * pci_ari_enabled - query ARI forwarding status
218 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
220 static inline int pci_ari_enabled(struct pci_bus *bus)
222 return bus->self && bus->self->ari_enabled;
225 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
226 void pci_disable_bridge_window(struct pci_dev *dev);
228 /* Single Root I/O Virtualization */
230 int pos; /* capability position */
231 int nres; /* number of resources */
232 u32 cap; /* SR-IOV Capabilities */
233 u16 ctrl; /* SR-IOV Control */
234 u16 total_VFs; /* total VFs associated with the PF */
235 u16 initial_VFs; /* initial VFs associated with the PF */
236 u16 num_VFs; /* number of VFs available */
237 u16 offset; /* first VF Routing ID offset */
238 u16 stride; /* following VF stride */
239 u32 pgsz; /* page size for BAR alignment */
240 u8 link; /* Function Dependency Link */
241 u16 driver_max_VFs; /* max num VFs driver supports */
242 struct pci_dev *dev; /* lowest numbered PF */
243 struct pci_dev *self; /* this PF */
244 struct mutex lock; /* lock for VF bus */
245 struct work_struct mtask; /* VF Migration task */
246 u8 __iomem *mstate; /* VF Migration State Array */
249 #ifdef CONFIG_PCI_ATS
250 void pci_restore_ats_state(struct pci_dev *dev);
252 static inline void pci_restore_ats_state(struct pci_dev *dev)
255 #endif /* CONFIG_PCI_ATS */
257 #ifdef CONFIG_PCI_IOV
258 int pci_iov_init(struct pci_dev *dev);
259 void pci_iov_release(struct pci_dev *dev);
260 int pci_iov_resource_bar(struct pci_dev *dev, int resno,
261 enum pci_bar_type *type);
262 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
263 void pci_restore_iov_state(struct pci_dev *dev);
264 int pci_iov_bus_range(struct pci_bus *bus);
267 static inline int pci_iov_init(struct pci_dev *dev)
271 static inline void pci_iov_release(struct pci_dev *dev)
275 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
276 enum pci_bar_type *type)
280 static inline void pci_restore_iov_state(struct pci_dev *dev)
283 static inline int pci_iov_bus_range(struct pci_bus *bus)
288 #endif /* CONFIG_PCI_IOV */
290 unsigned long pci_cardbus_resource_alignment(struct resource *);
292 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
293 struct resource *res)
295 #ifdef CONFIG_PCI_IOV
296 int resno = res - dev->resource;
298 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
299 return pci_sriov_resource_alignment(dev, resno);
301 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
302 return pci_cardbus_resource_alignment(res);
303 return resource_alignment(res);
306 void pci_enable_acs(struct pci_dev *dev);
308 struct pci_dev_reset_methods {
311 int (*reset)(struct pci_dev *dev, int probe);
314 #ifdef CONFIG_PCI_QUIRKS
315 int pci_dev_specific_reset(struct pci_dev *dev, int probe);
317 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
323 #endif /* DRIVERS_PCI_H */