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);
25 extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
26 struct vm_area_struct *vma);
28 int pci_probe_reset_function(struct pci_dev *dev);
31 * struct pci_platform_pm_ops - Firmware PM callbacks
33 * @is_manageable: returns 'true' if given device is power manageable by the
36 * @set_state: invokes the platform firmware to set the device's power state
38 * @choose_state: returns PCI power state of given device preferred by the
39 * platform; to be used during system-wide transitions from a
40 * sleeping state to the working state and vice versa
42 * @can_wakeup: returns 'true' if given device is capable of waking up the
43 * system from a sleeping state
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 bool (*can_wakeup)(struct pci_dev *dev);
59 int (*sleep_wake)(struct pci_dev *dev, bool enable);
60 int (*run_wake)(struct pci_dev *dev, bool enable);
63 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
64 extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
65 extern void pci_disable_enabled_device(struct pci_dev *dev);
66 extern int pci_finish_runtime_suspend(struct pci_dev *dev);
67 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
68 extern void pci_pm_init(struct pci_dev *dev);
69 extern void platform_pci_wakeup_init(struct pci_dev *dev);
70 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
72 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
74 return !!(pci_dev->subordinate);
77 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
78 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
79 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
80 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
81 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
82 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
85 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
86 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
87 void (*release)(struct pci_dev *dev);
92 const struct pci_vpd_ops *ops;
93 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
96 extern int pci_vpd_pci22_init(struct pci_dev *dev);
97 static inline void pci_vpd_release(struct pci_dev *dev)
100 dev->vpd->ops->release(dev);
103 /* PCI /proc functions */
104 #ifdef CONFIG_PROC_FS
105 extern int pci_proc_attach_device(struct pci_dev *dev);
106 extern int pci_proc_detach_device(struct pci_dev *dev);
107 extern int pci_proc_detach_bus(struct pci_bus *bus);
109 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
110 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
111 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
114 /* Functions for PCI Hotplug drivers to use */
115 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
117 #ifdef HAVE_PCI_LEGACY
118 extern void pci_create_legacy_files(struct pci_bus *bus);
119 extern void pci_remove_legacy_files(struct pci_bus *bus);
121 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
122 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
125 /* Lock for read/write access to pci device and bus lists */
126 extern struct rw_semaphore pci_bus_sem;
128 extern unsigned int pci_pm_d3_delay;
130 #ifdef CONFIG_PCI_MSI
131 void pci_no_msi(void);
132 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
134 static inline void pci_no_msi(void) { }
135 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
138 #ifdef CONFIG_PCIEAER
139 void pci_no_aer(void);
140 bool pci_aer_available(void);
142 static inline void pci_no_aer(void) { }
143 static inline bool pci_aer_available(void) { return false; }
146 static inline int pci_no_d1d2(struct pci_dev *dev)
148 unsigned int parent_dstates = 0;
151 parent_dstates = dev->bus->self->no_d1d2;
152 return (dev->no_d1d2 || parent_dstates);
155 extern struct device_attribute pci_dev_attrs[];
156 extern struct device_attribute dev_attr_cpuaffinity;
157 extern struct device_attribute dev_attr_cpulistaffinity;
158 #ifdef CONFIG_HOTPLUG
159 extern struct bus_attribute pci_bus_attrs[];
161 #define pci_bus_attrs NULL
166 * pci_match_one_device - Tell if a PCI device structure has a matching
167 * PCI device id structure
168 * @id: single PCI device id structure to match
169 * @dev: the PCI device structure to match against
171 * Returns the matching pci_device_id structure or %NULL if there is no match.
173 static inline const struct pci_device_id *
174 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
176 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
177 (id->device == PCI_ANY_ID || id->device == dev->device) &&
178 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
179 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
180 !((id->class ^ dev->class) & id->class_mask))
185 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
187 /* PCI slot sysfs helper code */
188 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
190 extern struct kset *pci_slots_kset;
192 struct pci_slot_attribute {
193 struct attribute attr;
194 ssize_t (*show)(struct pci_slot *, char *);
195 ssize_t (*store)(struct pci_slot *, const char *, size_t);
197 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
200 pci_bar_unknown, /* Standard PCI BAR probe */
201 pci_bar_io, /* An io port BAR */
202 pci_bar_mem32, /* A 32-bit memory BAR */
203 pci_bar_mem64, /* A 64-bit memory BAR */
206 extern int pci_setup_device(struct pci_dev *dev);
207 extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
208 struct resource *res, unsigned int reg);
209 extern int pci_resource_bar(struct pci_dev *dev, int resno,
210 enum pci_bar_type *type);
211 extern int pci_bus_add_child(struct pci_bus *bus);
212 extern void pci_enable_ari(struct pci_dev *dev);
214 * pci_ari_enabled - query ARI forwarding status
217 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
219 static inline int pci_ari_enabled(struct pci_bus *bus)
221 return bus->self && bus->self->ari_enabled;
224 #ifdef CONFIG_PCI_QUIRKS
225 extern int pci_is_reassigndev(struct pci_dev *dev);
226 resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
227 extern void pci_disable_bridge_window(struct pci_dev *dev);
230 /* Single Root I/O Virtualization */
232 int pos; /* capability position */
233 int nres; /* number of resources */
234 u32 cap; /* SR-IOV Capabilities */
235 u16 ctrl; /* SR-IOV Control */
236 u16 total; /* total VFs associated with the PF */
237 u16 initial; /* initial VFs associated with the PF */
238 u16 nr_virtfn; /* number of VFs available */
239 u16 offset; /* first VF Routing ID offset */
240 u16 stride; /* following VF stride */
241 u32 pgsz; /* page size for BAR alignment */
242 u8 link; /* Function Dependency Link */
243 struct pci_dev *dev; /* lowest numbered PF */
244 struct pci_dev *self; /* this PF */
245 struct mutex lock; /* lock for VF bus */
246 struct work_struct mtask; /* VF Migration task */
247 u8 __iomem *mstate; /* VF Migration State Array */
250 /* Address Translation Service */
252 int pos; /* capability position */
253 int stu; /* Smallest Translation Unit */
254 int qdep; /* Invalidate Queue Depth */
255 int ref_cnt; /* Physical Function reference count */
256 unsigned int is_enabled:1; /* Enable bit is set */
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);
269 extern int pci_enable_ats(struct pci_dev *dev, int ps);
270 extern void pci_disable_ats(struct pci_dev *dev);
271 extern int pci_ats_queue_depth(struct pci_dev *dev);
273 * pci_ats_enabled - query the ATS status
274 * @dev: the PCI device
276 * Returns 1 if ATS capability is enabled, or 0 if not.
278 static inline int pci_ats_enabled(struct pci_dev *dev)
280 return dev->ats && dev->ats->is_enabled;
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,
292 enum pci_bar_type *type)
296 static inline void pci_restore_iov_state(struct pci_dev *dev)
299 static inline int pci_iov_bus_range(struct pci_bus *bus)
304 static inline int pci_enable_ats(struct pci_dev *dev, int ps)
308 static inline void pci_disable_ats(struct pci_dev *dev)
311 static inline int pci_ats_queue_depth(struct pci_dev *dev)
315 static inline int pci_ats_enabled(struct pci_dev *dev)
319 #endif /* CONFIG_PCI_IOV */
321 static inline resource_size_t pci_resource_alignment(struct pci_dev *dev,
322 struct resource *res)
324 #ifdef CONFIG_PCI_IOV
325 int resno = res - dev->resource;
327 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
328 return pci_sriov_resource_alignment(dev, resno);
330 return resource_alignment(res);
333 extern void pci_enable_acs(struct pci_dev *dev);
335 struct pci_dev_reset_methods {
338 int (*reset)(struct pci_dev *dev, int probe);
341 #ifdef CONFIG_PCI_QUIRKS
342 extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
344 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
350 #endif /* DRIVERS_PCI_H */