4 #include <linux/workqueue.h>
6 #define PCI_CFG_SPACE_SIZE 256
7 #define PCI_CFG_SPACE_EXP_SIZE 4096
9 /* Functions internal to the PCI core code */
11 extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env);
12 extern int pci_create_sysfs_dev_files(struct pci_dev *pdev);
13 extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
14 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
15 static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
17 static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
20 extern void pci_create_firmware_label_files(struct pci_dev *pdev);
21 extern void pci_remove_firmware_label_files(struct pci_dev *pdev);
23 extern void pci_cleanup_rom(struct pci_dev *dev);
26 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
27 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
29 extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
30 struct vm_area_struct *vmai,
31 enum pci_mmap_api mmap_api);
33 int pci_probe_reset_function(struct pci_dev *dev);
36 * struct pci_platform_pm_ops - Firmware PM callbacks
38 * @is_manageable: returns 'true' if given device is power manageable by the
41 * @set_state: invokes the platform firmware to set the device's power state
43 * @choose_state: returns PCI power state of given device preferred by the
44 * platform; to be used during system-wide transitions from a
45 * sleeping state to the working state and vice versa
47 * @can_wakeup: returns 'true' if given device is capable of waking up the
48 * system from a sleeping state
50 * @sleep_wake: enables/disables the system wake up capability of given device
52 * @run_wake: enables/disables the platform to generate run-time wake-up events
53 * for given device (the device's wake-up capability has to be
54 * enabled by @sleep_wake for this feature to work)
56 * If given platform is generally capable of power managing PCI devices, all of
57 * these callbacks are mandatory.
59 struct pci_platform_pm_ops {
60 bool (*is_manageable)(struct pci_dev *dev);
61 int (*set_state)(struct pci_dev *dev, pci_power_t state);
62 pci_power_t (*choose_state)(struct pci_dev *dev);
63 bool (*can_wakeup)(struct pci_dev *dev);
64 int (*sleep_wake)(struct pci_dev *dev, bool enable);
65 int (*run_wake)(struct pci_dev *dev, bool enable);
68 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
69 extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
70 extern void pci_power_up(struct pci_dev *dev);
71 extern void pci_disable_enabled_device(struct pci_dev *dev);
72 extern int pci_finish_runtime_suspend(struct pci_dev *dev);
73 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
74 extern void pci_wakeup_bus(struct pci_bus *bus);
75 extern void pci_config_pm_runtime_get(struct pci_dev *dev);
76 extern void pci_config_pm_runtime_put(struct pci_dev *dev);
77 extern void pci_pm_init(struct pci_dev *dev);
78 extern void platform_pci_wakeup_init(struct pci_dev *dev);
79 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
80 void pci_free_cap_save_buffers(struct pci_dev *dev);
82 static inline void pci_wakeup_event(struct pci_dev *dev)
84 /* Wait 100 ms before the system can be put into a sleep state. */
85 pm_wakeup_event(&dev->dev, 100);
88 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
90 return !!(pci_dev->subordinate);
94 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
95 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
96 void (*release)(struct pci_dev *dev);
101 const struct pci_vpd_ops *ops;
102 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
105 extern int pci_vpd_pci22_init(struct pci_dev *dev);
106 static inline void pci_vpd_release(struct pci_dev *dev)
109 dev->vpd->ops->release(dev);
112 /* PCI /proc functions */
113 #ifdef CONFIG_PROC_FS
114 extern int pci_proc_attach_device(struct pci_dev *dev);
115 extern int pci_proc_detach_device(struct pci_dev *dev);
116 extern int pci_proc_detach_bus(struct pci_bus *bus);
118 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
119 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
120 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
123 /* Functions for PCI Hotplug drivers to use */
124 int pci_hp_add_bridge(struct pci_dev *dev);
126 #ifdef HAVE_PCI_LEGACY
127 extern void pci_create_legacy_files(struct pci_bus *bus);
128 extern void pci_remove_legacy_files(struct pci_bus *bus);
130 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
131 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
134 /* Lock for read/write access to pci device and bus lists */
135 extern struct rw_semaphore pci_bus_sem;
137 extern raw_spinlock_t pci_lock;
139 extern unsigned int pci_pm_d3_delay;
141 #ifdef CONFIG_PCI_MSI
142 void pci_no_msi(void);
143 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
145 static inline void pci_no_msi(void) { }
146 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
149 void pci_realloc_get_opt(char *);
151 static inline int pci_no_d1d2(struct pci_dev *dev)
153 unsigned int parent_dstates = 0;
156 parent_dstates = dev->bus->self->no_d1d2;
157 return (dev->no_d1d2 || parent_dstates);
160 extern struct device_attribute pci_dev_attrs[];
161 extern struct device_attribute pcibus_dev_attrs[];
162 #ifdef CONFIG_HOTPLUG
163 extern struct bus_attribute pci_bus_attrs[];
165 #define pci_bus_attrs NULL
170 * pci_match_one_device - Tell if a PCI device structure has a matching
171 * PCI device id structure
172 * @id: single PCI device id structure to match
173 * @dev: the PCI device structure to match against
175 * Returns the matching pci_device_id structure or %NULL if there is no match.
177 static inline const struct pci_device_id *
178 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
180 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
181 (id->device == PCI_ANY_ID || id->device == dev->device) &&
182 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
183 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
184 !((id->class ^ dev->class) & id->class_mask))
189 /* PCI slot sysfs helper code */
190 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
192 extern struct kset *pci_slots_kset;
194 struct pci_slot_attribute {
195 struct attribute attr;
196 ssize_t (*show)(struct pci_slot *, char *);
197 ssize_t (*store)(struct pci_slot *, const char *, size_t);
199 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
202 pci_bar_unknown, /* Standard PCI BAR probe */
203 pci_bar_io, /* An io port BAR */
204 pci_bar_mem32, /* A 32-bit memory BAR */
205 pci_bar_mem64, /* A 64-bit memory BAR */
208 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
210 extern int pci_setup_device(struct pci_dev *dev);
211 extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
212 struct resource *res, unsigned int reg);
213 extern int pci_resource_bar(struct pci_dev *dev, int resno,
214 enum pci_bar_type *type);
215 extern int pci_bus_add_child(struct pci_bus *bus);
216 extern void pci_enable_ari(struct pci_dev *dev);
218 * pci_ari_enabled - query ARI forwarding status
221 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
223 static inline int pci_ari_enabled(struct pci_bus *bus)
225 return bus->self && bus->self->ari_enabled;
228 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
229 extern void pci_disable_bridge_window(struct pci_dev *dev);
231 /* Single Root I/O Virtualization */
233 int pos; /* capability position */
234 int nres; /* number of resources */
235 u32 cap; /* SR-IOV Capabilities */
236 u16 ctrl; /* SR-IOV Control */
237 u16 total; /* total VFs associated with the PF */
238 u16 initial; /* initial VFs associated with the PF */
239 u16 nr_virtfn; /* number of VFs available */
240 u16 offset; /* first VF Routing ID offset */
241 u16 stride; /* following VF stride */
242 u32 pgsz; /* page size for BAR alignment */
243 u8 link; /* Function Dependency Link */
244 struct pci_dev *dev; /* lowest numbered PF */
245 struct pci_dev *self; /* this PF */
246 struct mutex lock; /* lock for VF bus */
247 struct work_struct mtask; /* VF Migration task */
248 u8 __iomem *mstate; /* VF Migration State Array */
251 #ifdef CONFIG_PCI_ATS
252 extern void pci_restore_ats_state(struct pci_dev *dev);
254 static inline void pci_restore_ats_state(struct pci_dev *dev)
257 #endif /* CONFIG_PCI_ATS */
259 #ifdef CONFIG_PCI_IOV
260 extern int pci_iov_init(struct pci_dev *dev);
261 extern void pci_iov_release(struct pci_dev *dev);
262 extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
263 enum pci_bar_type *type);
264 extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev,
266 extern void pci_restore_iov_state(struct pci_dev *dev);
267 extern int pci_iov_bus_range(struct pci_bus *bus);
270 static inline int pci_iov_init(struct pci_dev *dev)
274 static inline void pci_iov_release(struct pci_dev *dev)
278 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
279 enum pci_bar_type *type)
283 static inline void pci_restore_iov_state(struct pci_dev *dev)
286 static inline int pci_iov_bus_range(struct pci_bus *bus)
291 #endif /* CONFIG_PCI_IOV */
293 extern unsigned long pci_cardbus_resource_alignment(struct resource *);
295 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
296 struct resource *res)
298 #ifdef CONFIG_PCI_IOV
299 int resno = res - dev->resource;
301 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
302 return pci_sriov_resource_alignment(dev, resno);
304 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
305 return pci_cardbus_resource_alignment(res);
306 return resource_alignment(res);
309 extern void pci_enable_acs(struct pci_dev *dev);
311 struct pci_dev_reset_methods {
314 int (*reset)(struct pci_dev *dev, int probe);
317 #ifdef CONFIG_PCI_QUIRKS
318 extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
320 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
326 #endif /* DRIVERS_PCI_H */