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_dev_complete_resume(struct pci_dev *pci_dev);
79 void pci_config_pm_runtime_get(struct pci_dev *dev);
80 void pci_config_pm_runtime_put(struct pci_dev *dev);
81 void pci_pm_init(struct pci_dev *dev);
82 void pci_ea_init(struct pci_dev *dev);
83 void pci_allocate_cap_save_buffers(struct pci_dev *dev);
84 void pci_free_cap_save_buffers(struct pci_dev *dev);
86 static inline void pci_wakeup_event(struct pci_dev *dev)
88 /* Wait 100 ms before the system can be put into a sleep state. */
89 pm_wakeup_event(&dev->dev, 100);
92 static inline bool pci_has_subordinate(struct pci_dev *pci_dev)
94 return !!(pci_dev->subordinate);
98 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
99 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
100 void (*release)(struct pci_dev *dev);
105 const struct pci_vpd_ops *ops;
106 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
109 int pci_vpd_pci22_init(struct pci_dev *dev);
110 static inline void pci_vpd_release(struct pci_dev *dev)
113 dev->vpd->ops->release(dev);
116 /* PCI /proc functions */
117 #ifdef CONFIG_PROC_FS
118 int pci_proc_attach_device(struct pci_dev *dev);
119 int pci_proc_detach_device(struct pci_dev *dev);
120 int pci_proc_detach_bus(struct pci_bus *bus);
122 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
123 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
124 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
127 /* Functions for PCI Hotplug drivers to use */
128 int pci_hp_add_bridge(struct pci_dev *dev);
130 #ifdef HAVE_PCI_LEGACY
131 void pci_create_legacy_files(struct pci_bus *bus);
132 void pci_remove_legacy_files(struct pci_bus *bus);
134 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
135 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
138 /* Lock for read/write access to pci device and bus lists */
139 extern struct rw_semaphore pci_bus_sem;
141 extern raw_spinlock_t pci_lock;
143 extern unsigned int pci_pm_d3_delay;
145 #ifdef CONFIG_PCI_MSI
146 void pci_no_msi(void);
147 void pci_msi_init_pci_dev(struct pci_dev *dev);
149 static inline void pci_no_msi(void) { }
150 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
153 static inline void pci_msi_set_enable(struct pci_dev *dev, int enable)
157 pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
158 control &= ~PCI_MSI_FLAGS_ENABLE;
160 control |= PCI_MSI_FLAGS_ENABLE;
161 pci_write_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, control);
164 static inline void pci_msix_clear_and_set_ctrl(struct pci_dev *dev, u16 clear, u16 set)
168 pci_read_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, &ctrl);
171 pci_write_config_word(dev, dev->msix_cap + PCI_MSIX_FLAGS, ctrl);
174 void pci_realloc_get_opt(char *);
176 static inline int pci_no_d1d2(struct pci_dev *dev)
178 unsigned int parent_dstates = 0;
181 parent_dstates = dev->bus->self->no_d1d2;
182 return (dev->no_d1d2 || parent_dstates);
185 extern const struct attribute_group *pci_dev_groups[];
186 extern const struct attribute_group *pcibus_groups[];
187 extern struct device_type pci_dev_type;
188 extern const struct attribute_group *pci_bus_groups[];
192 * pci_match_one_device - Tell if a PCI device structure has a matching
193 * PCI device id structure
194 * @id: single PCI device id structure to match
195 * @dev: the PCI device structure to match against
197 * Returns the matching pci_device_id structure or %NULL if there is no match.
199 static inline const struct pci_device_id *
200 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
202 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
203 (id->device == PCI_ANY_ID || id->device == dev->device) &&
204 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
205 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
206 !((id->class ^ dev->class) & id->class_mask))
211 /* PCI slot sysfs helper code */
212 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
214 extern struct kset *pci_slots_kset;
216 struct pci_slot_attribute {
217 struct attribute attr;
218 ssize_t (*show)(struct pci_slot *, char *);
219 ssize_t (*store)(struct pci_slot *, const char *, size_t);
221 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
224 pci_bar_unknown, /* Standard PCI BAR probe */
225 pci_bar_io, /* An io port BAR */
226 pci_bar_mem32, /* A 32-bit memory BAR */
227 pci_bar_mem64, /* A 64-bit memory BAR */
230 bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl,
232 int pci_setup_device(struct pci_dev *dev);
233 int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
234 struct resource *res, unsigned int reg);
235 int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type);
236 void pci_configure_ari(struct pci_dev *dev);
237 void __pci_bus_size_bridges(struct pci_bus *bus,
238 struct list_head *realloc_head);
239 void __pci_bus_assign_resources(const struct pci_bus *bus,
240 struct list_head *realloc_head,
241 struct list_head *fail_head);
242 bool pci_bus_clip_resource(struct pci_dev *dev, int idx);
244 void pci_reassigndev_resource_alignment(struct pci_dev *dev);
245 void pci_disable_bridge_window(struct pci_dev *dev);
247 /* Single Root I/O Virtualization */
249 int pos; /* capability position */
250 int nres; /* number of resources */
251 u32 cap; /* SR-IOV Capabilities */
252 u16 ctrl; /* SR-IOV Control */
253 u16 total_VFs; /* total VFs associated with the PF */
254 u16 initial_VFs; /* initial VFs associated with the PF */
255 u16 num_VFs; /* number of VFs available */
256 u16 offset; /* first VF Routing ID offset */
257 u16 stride; /* following VF stride */
258 u32 pgsz; /* page size for BAR alignment */
259 u8 link; /* Function Dependency Link */
260 u8 max_VF_buses; /* max buses consumed by VFs */
261 u16 driver_max_VFs; /* max num VFs driver supports */
262 struct pci_dev *dev; /* lowest numbered PF */
263 struct pci_dev *self; /* this PF */
264 struct mutex lock; /* lock for VF bus */
265 resource_size_t barsz[PCI_SRIOV_NUM_BARS]; /* VF BAR size */
268 #ifdef CONFIG_PCI_ATS
269 void pci_restore_ats_state(struct pci_dev *dev);
271 static inline void pci_restore_ats_state(struct pci_dev *dev)
274 #endif /* CONFIG_PCI_ATS */
276 #ifdef CONFIG_PCI_IOV
277 int pci_iov_init(struct pci_dev *dev);
278 void pci_iov_release(struct pci_dev *dev);
279 int pci_iov_resource_bar(struct pci_dev *dev, int resno);
280 resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
281 void pci_restore_iov_state(struct pci_dev *dev);
282 int pci_iov_bus_range(struct pci_bus *bus);
285 static inline int pci_iov_init(struct pci_dev *dev)
289 static inline void pci_iov_release(struct pci_dev *dev)
293 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno)
297 static inline void pci_restore_iov_state(struct pci_dev *dev)
300 static inline int pci_iov_bus_range(struct pci_bus *bus)
305 #endif /* CONFIG_PCI_IOV */
307 unsigned long pci_cardbus_resource_alignment(struct resource *);
309 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
310 struct resource *res)
312 #ifdef CONFIG_PCI_IOV
313 int resno = res - dev->resource;
315 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
316 return pci_sriov_resource_alignment(dev, resno);
318 if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS)
319 return pci_cardbus_resource_alignment(res);
320 return resource_alignment(res);
323 void pci_enable_acs(struct pci_dev *dev);
325 struct pci_dev_reset_methods {
328 int (*reset)(struct pci_dev *dev, int probe);
331 #ifdef CONFIG_PCI_QUIRKS
332 int pci_dev_specific_reset(struct pci_dev *dev, int probe);
334 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
340 struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
342 #endif /* DRIVERS_PCI_H */