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 int pci_create_sysfs_dev_files(struct pci_dev *pdev);
12 void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
13 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
14 static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
16 static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
19 void pci_create_firmware_label_files(struct pci_dev *pdev);
20 void pci_remove_firmware_label_files(struct pci_dev *pdev);
22 void pci_cleanup_rom(struct pci_dev *dev);
25 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
26 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
28 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
29 enum pci_mmap_api mmap_api);
31 int pci_probe_reset_function(struct pci_dev *dev);
34 * struct pci_platform_pm_ops - Firmware PM callbacks
36 * @is_manageable: returns 'true' if given device is power manageable by the
39 * @set_state: invokes the platform firmware to set the device's power state
41 * @choose_state: returns PCI power state of given device preferred by the
42 * platform; to be used during system-wide transitions from a
43 * sleeping state to the working state and vice versa
45 * @sleep_wake: enables/disables the system wake up capability of given device
47 * @run_wake: enables/disables the platform to generate run-time wake-up events
48 * for given device (the device's wake-up capability has to be
49 * enabled by @sleep_wake for this feature to work)
51 * If given platform is generally capable of power managing PCI devices, all of
52 * these callbacks are mandatory.
54 struct pci_platform_pm_ops {
55 bool (*is_manageable)(struct pci_dev *dev);
56 int (*set_state)(struct pci_dev *dev, pci_power_t state);
57 pci_power_t (*choose_state)(struct pci_dev *dev);
58 int (*sleep_wake)(struct pci_dev *dev, bool enable);
59 int (*run_wake)(struct pci_dev *dev, bool enable);
62 int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
63 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
64 void pci_power_up(struct pci_dev *dev);
65 void pci_disable_enabled_device(struct pci_dev *dev);
66 int pci_finish_runtime_suspend(struct pci_dev *dev);
67 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
68 void pci_wakeup_bus(struct pci_bus *bus);
69 void pci_config_pm_runtime_get(struct pci_dev *dev);
70 void pci_config_pm_runtime_put(struct pci_dev *dev);
71 void pci_pm_init(struct pci_dev *dev);
72 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
73 void pci_free_cap_save_buffers(struct pci_dev *dev);
75 static inline void pci_wakeup_event(struct pci_dev *dev)
77 /* Wait 100 ms before the system can be put into a sleep state. */
78 pm_wakeup_event(&dev->dev, 100);
81 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
83 return !!(pci_dev->subordinate);
87 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
88 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
89 void (*release)(struct pci_dev *dev);
94 const struct pci_vpd_ops *ops;
95 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
98 int pci_vpd_pci22_init(struct pci_dev *dev);
99 static inline void pci_vpd_release(struct pci_dev *dev)
102 dev->vpd->ops->release(dev);
105 /* PCI /proc functions */
106 #ifdef CONFIG_PROC_FS
107 int pci_proc_attach_device(struct pci_dev *dev);
108 int pci_proc_detach_device(struct pci_dev *dev);
109 int pci_proc_detach_bus(struct pci_bus *bus);
111 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
112 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
113 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
116 /* Functions for PCI Hotplug drivers to use */
117 int pci_hp_add_bridge(struct pci_dev *dev);
119 #ifdef HAVE_PCI_LEGACY
120 void pci_create_legacy_files(struct pci_bus *bus);
121 void pci_remove_legacy_files(struct pci_bus *bus);
123 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
124 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
127 /* Lock for read/write access to pci device and bus lists */
128 extern struct rw_semaphore pci_bus_sem;
130 extern raw_spinlock_t pci_lock;
132 extern unsigned int pci_pm_d3_delay;
134 #ifdef CONFIG_PCI_MSI
135 void pci_no_msi(void);
136 void pci_msi_init_pci_dev(struct pci_dev *dev);
138 static inline void pci_no_msi(void) { }
139 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
142 void pci_realloc_get_opt(char *);
144 static inline int pci_no_d1d2(struct pci_dev *dev)
146 unsigned int parent_dstates = 0;
149 parent_dstates = dev->bus->self->no_d1d2;
150 return (dev->no_d1d2 || parent_dstates);
153 extern struct device_attribute pci_dev_attrs[];
154 extern struct device_attribute pcibus_dev_attrs[];
155 extern struct device_type pci_dev_type;
156 extern struct bus_attribute pci_bus_attrs[];
160 * pci_match_one_device - Tell if a PCI device structure has a matching
161 * PCI device id structure
162 * @id: single PCI device id structure to match
163 * @dev: the PCI device structure to match against
165 * Returns the matching pci_device_id structure or %NULL if there is no match.
167 static inline const struct pci_device_id *
168 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
170 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
171 (id->device == PCI_ANY_ID || id->device == dev->device) &&
172 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
173 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
174 !((id->class ^ dev->class) & id->class_mask))
179 /* PCI slot sysfs helper code */
180 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
182 extern struct kset *pci_slots_kset;
184 struct pci_slot_attribute {
185 struct attribute attr;
186 ssize_t (*show)(struct pci_slot *, char *);
187 ssize_t (*store)(struct pci_slot *, const char *, size_t);
189 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
192 pci_bar_unknown, /* Standard PCI BAR probe */
193 pci_bar_io, /* An io port BAR */
194 pci_bar_mem32, /* A 32-bit memory BAR */
195 pci_bar_mem64, /* A 64-bit memory BAR */
198 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
200 int pci_setup_device(struct pci_dev *dev);
201 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
202 struct resource *res, unsigned int reg);
203 int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
204 void pci_configure_ari(struct pci_dev *dev);
207 * pci_ari_enabled - query ARI forwarding status
210 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
212 static inline int pci_ari_enabled(struct pci_bus *bus)
214 return bus->self && bus->self->ari_enabled;
217 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
218 void pci_disable_bridge_window(struct pci_dev *dev);
220 /* Single Root I/O Virtualization */
222 int pos; /* capability position */
223 int nres; /* number of resources */
224 u32 cap; /* SR-IOV Capabilities */
225 u16 ctrl; /* SR-IOV Control */
226 u16 total_VFs; /* total VFs associated with the PF */
227 u16 initial_VFs; /* initial VFs associated with the PF */
228 u16 num_VFs; /* number of VFs available */
229 u16 offset; /* first VF Routing ID offset */
230 u16 stride; /* following VF stride */
231 u32 pgsz; /* page size for BAR alignment */
232 u8 link; /* Function Dependency Link */
233 u16 driver_max_VFs; /* max num VFs driver supports */
234 struct pci_dev *dev; /* lowest numbered PF */
235 struct pci_dev *self; /* this PF */
236 struct mutex lock; /* lock for VF bus */
237 struct work_struct mtask; /* VF Migration task */
238 u8 __iomem *mstate; /* VF Migration State Array */
241 #ifdef CONFIG_PCI_ATS
242 void pci_restore_ats_state(struct pci_dev *dev);
244 static inline void pci_restore_ats_state(struct pci_dev *dev)
247 #endif /* CONFIG_PCI_ATS */
249 #ifdef CONFIG_PCI_IOV
250 int pci_iov_init(struct pci_dev *dev);
251 void pci_iov_release(struct pci_dev *dev);
252 int pci_iov_resource_bar(struct pci_dev *dev, int resno,
253 enum pci_bar_type *type);
254 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
255 void pci_restore_iov_state(struct pci_dev *dev);
256 int pci_iov_bus_range(struct pci_bus *bus);
259 static inline int pci_iov_init(struct pci_dev *dev)
263 static inline void pci_iov_release(struct pci_dev *dev)
267 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
268 enum pci_bar_type *type)
272 static inline void pci_restore_iov_state(struct pci_dev *dev)
275 static inline int pci_iov_bus_range(struct pci_bus *bus)
280 #endif /* CONFIG_PCI_IOV */
282 unsigned long pci_cardbus_resource_alignment(struct resource *);
284 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
285 struct resource *res)
287 #ifdef CONFIG_PCI_IOV
288 int resno = res - dev->resource;
290 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
291 return pci_sriov_resource_alignment(dev, resno);
293 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
294 return pci_cardbus_resource_alignment(res);
295 return resource_alignment(res);
298 void pci_enable_acs(struct pci_dev *dev);
300 struct pci_dev_reset_methods {
303 int (*reset)(struct pci_dev *dev, int probe);
306 #ifdef CONFIG_PCI_QUIRKS
307 int pci_dev_specific_reset(struct pci_dev *dev, int probe);
309 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
315 #endif /* DRIVERS_PCI_H */