4 #define PCI_CFG_SPACE_SIZE 256
5 #define PCI_CFG_SPACE_EXP_SIZE 4096
7 #define PCI_FIND_CAP_TTL 48
9 extern const unsigned char pcie_link_speed[];
11 bool pcie_cap_has_lnkctl(const struct pci_dev *dev);
13 /* Functions internal to the PCI core code */
15 int pci_create_sysfs_dev_files(struct pci_dev *pdev);
16 void pci_remove_sysfs_dev_files(struct pci_dev *pdev);
17 #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI)
18 static inline void pci_create_firmware_label_files(struct pci_dev *pdev)
20 static inline void pci_remove_firmware_label_files(struct pci_dev *pdev)
23 void pci_create_firmware_label_files(struct pci_dev *pdev);
24 void pci_remove_firmware_label_files(struct pci_dev *pdev);
26 void pci_cleanup_rom(struct pci_dev *dev);
29 PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */
30 PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */
32 int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai,
33 enum pci_mmap_api mmap_api);
35 int pci_probe_reset_function(struct pci_dev *dev);
38 * struct pci_platform_pm_ops - Firmware PM callbacks
40 * @is_manageable: returns 'true' if given device is power manageable by the
43 * @set_state: invokes the platform firmware to set the device's power state
45 * @choose_state: returns PCI power state of given device preferred by the
46 * platform; to be used during system-wide transitions from a
47 * sleeping state to the working state and vice versa
49 * @sleep_wake: enables/disables the system wake up capability of given device
51 * @run_wake: enables/disables the platform to generate run-time wake-up events
52 * for given device (the device's wake-up capability has to be
53 * enabled by @sleep_wake for this feature to work)
55 * @need_resume: returns 'true' if the given device (which is currently
56 * suspended) needs to be resumed to be configured for system
59 * If given platform is generally capable of power managing PCI devices, all of
60 * these callbacks are mandatory.
62 struct pci_platform_pm_ops {
63 bool (*is_manageable)(struct pci_dev *dev);
64 int (*set_state)(struct pci_dev *dev, pci_power_t state);
65 pci_power_t (*choose_state)(struct pci_dev *dev);
66 int (*sleep_wake)(struct pci_dev *dev, bool enable);
67 int (*run_wake)(struct pci_dev *dev, bool enable);
68 bool (*need_resume)(struct pci_dev *dev);
71 int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
72 void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
73 void pci_power_up(struct pci_dev *dev);
74 void pci_disable_enabled_device(struct pci_dev *dev);
75 int pci_finish_runtime_suspend(struct pci_dev *dev);
76 int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
77 bool pci_dev_keep_suspended(struct pci_dev *dev);
78 void pci_config_pm_runtime_get(struct pci_dev *dev);
79 void pci_config_pm_runtime_put(struct pci_dev *dev);
80 void pci_pm_init(struct pci_dev *dev);
81 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
82 void pci_free_cap_save_buffers(struct pci_dev *dev);
84 static inline void pci_wakeup_event(struct pci_dev *dev)
86 /* Wait 100 ms before the system can be put into a sleep state. */
87 pm_wakeup_event(&dev->dev, 100);
90 static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
92 return !!(pci_dev->subordinate);
96 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
97 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
98 void (*release)(struct pci_dev *dev);
103 const struct pci_vpd_ops *ops;
104 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
107 int pci_vpd_pci22_init(struct pci_dev *dev);
108 static inline void pci_vpd_release(struct pci_dev *dev)
111 dev->vpd->ops->release(dev);
114 /* PCI /proc functions */
115 #ifdef CONFIG_PROC_FS
116 int pci_proc_attach_device(struct pci_dev *dev);
117 int pci_proc_detach_device(struct pci_dev *dev);
118 int pci_proc_detach_bus(struct pci_bus *bus);
120 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
121 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
122 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
125 /* Functions for PCI Hotplug drivers to use */
126 int pci_hp_add_bridge(struct pci_dev *dev);
128 #ifdef HAVE_PCI_LEGACY
129 void pci_create_legacy_files(struct pci_bus *bus);
130 void pci_remove_legacy_files(struct pci_bus *bus);
132 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
133 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
136 /* Lock for read/write access to pci device and bus lists */
137 extern struct rw_semaphore pci_bus_sem;
139 extern raw_spinlock_t pci_lock;
141 extern unsigned int pci_pm_d3_delay;
143 #ifdef CONFIG_PCI_MSI
144 void pci_no_msi(void);
145 void pci_msi_init_pci_dev(struct pci_dev *dev);
147 static inline void pci_no_msi(void) { }
148 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
151 static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
155 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
156 control &= ~PCI_MSI_FLAGS_ENABLE;
158 control |= PCI_MSI_FLAGS_ENABLE;
159 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
162 static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
166 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
169 pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
172 void pci_realloc_get_opt(char *);
174 static inline int pci_no_d1d2(struct pci_dev *dev)
176 unsigned int parent_dstates = 0;
179 parent_dstates = dev->bus->self->no_d1d2;
180 return (dev->no_d1d2 || parent_dstates);
183 extern const struct attribute_group *pci_dev_groups[];
184 extern const struct attribute_group *pcibus_groups[];
185 extern struct device_type pci_dev_type;
186 extern const struct attribute_group *pci_bus_groups[];
190 * pci_match_one_device - Tell if a PCI device structure has a matching
191 * PCI device id structure
192 * @id: single PCI device id structure to match
193 * @dev: the PCI device structure to match against
195 * Returns the matching pci_device_id structure or %NULL if there is no match.
197 static inline const struct pci_device_id *
198 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
200 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
201 (id->device == PCI_ANY_ID || id->device == dev->device) &&
202 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
203 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
204 !((id->class ^ dev->class) & id->class_mask))
209 /* PCI slot sysfs helper code */
210 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
212 extern struct kset *pci_slots_kset;
214 struct pci_slot_attribute {
215 struct attribute attr;
216 ssize_t (*show)(struct pci_slot *, char *);
217 ssize_t (*store)(struct pci_slot *, const char *, size_t);
219 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
222 pci_bar_unknown, /* Standard PCI BAR probe */
223 pci_bar_io, /* An io port BAR */
224 pci_bar_mem32, /* A 32-bit memory BAR */
225 pci_bar_mem64, /* A 64-bit memory BAR */
228 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
230 int pci_setup_device(struct pci_dev *dev);
231 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
232 struct resource *res, unsigned int reg);
233 int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
234 void pci_configure_ari(struct pci_dev *dev);
235 void __pci_bus_size_bridges(struct pci_bus *bus,
236 struct list_head *realloc_head);
237 void __pci_bus_assign_resources(const struct pci_bus *bus,
238 struct list_head *realloc_head,
239 struct list_head *fail_head);
240 bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
242 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
243 void pci_disable_bridge_window(struct pci_dev *dev);
245 /* Single Root I/O Virtualization */
247 int pos; /* capability position */
248 int nres; /* number of resources */
249 u32 cap; /* SR-IOV Capabilities */
250 u16 ctrl; /* SR-IOV Control */
251 u16 total_VFs; /* total VFs associated with the PF */
252 u16 initial_VFs; /* initial VFs associated with the PF */
253 u16 num_VFs; /* number of VFs available */
254 u16 offset; /* first VF Routing ID offset */
255 u16 stride; /* following VF stride */
256 u32 pgsz; /* page size for BAR alignment */
257 u8 link; /* Function Dependency Link */
258 u8 max_VF_buses; /* max buses consumed by VFs */
259 u16 driver_max_VFs; /* max num VFs driver supports */
260 struct pci_dev *dev; /* lowest numbered PF */
261 struct pci_dev *self; /* this PF */
262 struct mutex lock; /* lock for VF bus */
263 resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
266 #ifdef CONFIG_PCI_ATS
267 void pci_restore_ats_state(struct pci_dev *dev);
269 static inline void pci_restore_ats_state(struct pci_dev *dev)
272 #endif /* CONFIG_PCI_ATS */
274 #ifdef CONFIG_PCI_IOV
275 int pci_iov_init(struct pci_dev *dev);
276 void pci_iov_release(struct pci_dev *dev);
277 int pci_iov_resource_bar(struct pci_dev *dev, int resno);
278 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
279 void pci_restore_iov_state(struct pci_dev *dev);
280 int pci_iov_bus_range(struct pci_bus *bus);
283 static inline int pci_iov_init(struct pci_dev *dev)
287 static inline void pci_iov_release(struct pci_dev *dev)
291 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
295 static inline void pci_restore_iov_state(struct pci_dev *dev)
298 static inline int pci_iov_bus_range(struct pci_bus *bus)
303 #endif /* CONFIG_PCI_IOV */
305 unsigned long pci_cardbus_resource_alignment(struct resource *);
307 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
308 struct resource *res)
310 #ifdef CONFIG_PCI_IOV
311 int resno = res - dev->resource;
313 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
314 return pci_sriov_resource_alignment(dev, resno);
316 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
317 return pci_cardbus_resource_alignment(res);
318 return resource_alignment(res);
321 void pci_enable_acs(struct pci_dev *dev);
323 struct pci_dev_reset_methods {
326 int (*reset)(struct pci_dev *dev, int probe);
329 #ifdef CONFIG_PCI_QUIRKS
330 int pci_dev_specific_reset(struct pci_dev *dev, int probe);
332 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
338 struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
340 #endif /* DRIVERS_PCI_H */