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);
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_disable_enabled_device(struct pci_dev *dev);
71 extern int pci_finish_runtime_suspend(struct pci_dev *dev);
72 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
73 extern void pci_pm_init(struct pci_dev *dev);
74 extern void platform_pci_wakeup_init(struct pci_dev *dev);
75 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
77 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
79 return !!(pci_dev->subordinate);
82 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
83 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
84 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
85 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
86 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
87 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
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 extern 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 extern int pci_proc_attach_device(struct pci_dev *dev);
111 extern int pci_proc_detach_device(struct pci_dev *dev);
112 extern 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 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
122 #ifdef HAVE_PCI_LEGACY
123 extern void pci_create_legacy_files(struct pci_bus *bus);
124 extern 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 unsigned int pci_pm_d3_delay;
135 #ifdef CONFIG_PCI_MSI
136 void pci_no_msi(void);
137 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
139 static inline void pci_no_msi(void) { }
140 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
143 static inline int pci_no_d1d2(struct pci_dev *dev)
145 unsigned int parent_dstates = 0;
148 parent_dstates = dev->bus->self->no_d1d2;
149 return (dev->no_d1d2 || parent_dstates);
152 extern struct device_attribute pci_dev_attrs[];
153 extern struct device_attribute dev_attr_cpuaffinity;
154 extern struct device_attribute dev_attr_cpulistaffinity;
155 #ifdef CONFIG_HOTPLUG
156 extern struct bus_attribute pci_bus_attrs[];
158 #define pci_bus_attrs NULL
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 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
184 /* PCI slot sysfs helper code */
185 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
187 extern struct kset *pci_slots_kset;
189 struct pci_slot_attribute {
190 struct attribute attr;
191 ssize_t (*show)(struct pci_slot *, char *);
192 ssize_t (*store)(struct pci_slot *, const char *, size_t);
194 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
197 pci_bar_unknown, /* Standard PCI BAR probe */
198 pci_bar_io, /* An io port BAR */
199 pci_bar_mem32, /* A 32-bit memory BAR */
200 pci_bar_mem64, /* A 64-bit memory BAR */
203 extern int pci_setup_device(struct pci_dev *dev);
204 extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
205 struct resource *res, unsigned int reg);
206 extern int pci_resource_bar(struct pci_dev *dev, int resno,
207 enum pci_bar_type *type);
208 extern int pci_bus_add_child(struct pci_bus *bus);
209 extern void pci_enable_ari(struct pci_dev *dev);
211 * pci_ari_enabled - query ARI forwarding status
214 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
216 static inline int pci_ari_enabled(struct pci_bus *bus)
218 return bus->self && bus->self->ari_enabled;
221 #ifdef CONFIG_PCI_QUIRKS
222 extern int pci_is_reassigndev(struct pci_dev *dev);
223 resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
224 extern void pci_disable_bridge_window(struct pci_dev *dev);
227 /* Single Root I/O Virtualization */
229 int pos; /* capability position */
230 int nres; /* number of resources */
231 u32 cap; /* SR-IOV Capabilities */
232 u16 ctrl; /* SR-IOV Control */
233 u16 total; /* total VFs associated with the PF */
234 u16 initial; /* initial VFs associated with the PF */
235 u16 nr_virtfn; /* number of VFs available */
236 u16 offset; /* first VF Routing ID offset */
237 u16 stride; /* following VF stride */
238 u32 pgsz; /* page size for BAR alignment */
239 u8 link; /* Function Dependency Link */
240 struct pci_dev *dev; /* lowest numbered PF */
241 struct pci_dev *self; /* this PF */
242 struct mutex lock; /* lock for VF bus */
243 struct work_struct mtask; /* VF Migration task */
244 u8 __iomem *mstate; /* VF Migration State Array */
247 /* Address Translation Service */
249 int pos; /* capability position */
250 int stu; /* Smallest Translation Unit */
251 int qdep; /* Invalidate Queue Depth */
252 int ref_cnt; /* Physical Function reference count */
253 unsigned int is_enabled:1; /* Enable bit is set */
256 #ifdef CONFIG_PCI_IOV
257 extern int pci_iov_init(struct pci_dev *dev);
258 extern void pci_iov_release(struct pci_dev *dev);
259 extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
260 enum pci_bar_type *type);
261 extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev,
263 extern void pci_restore_iov_state(struct pci_dev *dev);
264 extern int pci_iov_bus_range(struct pci_bus *bus);
266 extern int pci_enable_ats(struct pci_dev *dev, int ps);
267 extern void pci_disable_ats(struct pci_dev *dev);
268 extern int pci_ats_queue_depth(struct pci_dev *dev);
270 * pci_ats_enabled - query the ATS status
271 * @dev: the PCI device
273 * Returns 1 if ATS capability is enabled, or 0 if not.
275 static inline int pci_ats_enabled(struct pci_dev *dev)
277 return dev->ats && dev->ats->is_enabled;
280 static inline int pci_iov_init(struct pci_dev *dev)
284 static inline void pci_iov_release(struct pci_dev *dev)
288 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
289 enum pci_bar_type *type)
293 static inline void pci_restore_iov_state(struct pci_dev *dev)
296 static inline int pci_iov_bus_range(struct pci_bus *bus)
301 static inline int pci_enable_ats(struct pci_dev *dev, int ps)
305 static inline void pci_disable_ats(struct pci_dev *dev)
308 static inline int pci_ats_queue_depth(struct pci_dev *dev)
312 static inline int pci_ats_enabled(struct pci_dev *dev)
316 #endif /* CONFIG_PCI_IOV */
318 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
319 struct resource *res)
321 #ifdef CONFIG_PCI_IOV
322 int resno = res - dev->resource;
324 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
325 return pci_sriov_resource_alignment(dev, resno);
327 return resource_alignment(res);
330 extern void pci_enable_acs(struct pci_dev *dev);
332 struct pci_dev_reset_methods {
335 int (*reset)(struct pci_dev *dev, int probe);
338 #ifdef CONFIG_PCI_QUIRKS
339 extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
341 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
347 #endif /* DRIVERS_PCI_H */