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);
14 extern void pci_cleanup_rom(struct pci_dev *dev);
16 extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
17 struct vm_area_struct *vma);
19 int pci_probe_reset_function(struct pci_dev *dev);
22 * struct pci_platform_pm_ops - Firmware PM callbacks
24 * @is_manageable: returns 'true' if given device is power manageable by the
27 * @set_state: invokes the platform firmware to set the device's power state
29 * @choose_state: returns PCI power state of given device preferred by the
30 * platform; to be used during system-wide transitions from a
31 * sleeping state to the working state and vice versa
33 * @can_wakeup: returns 'true' if given device is capable of waking up the
34 * system from a sleeping state
36 * @sleep_wake: enables/disables the system wake up capability of given device
38 * @run_wake: enables/disables the platform to generate run-time wake-up events
39 * for given device (the device's wake-up capability has to be
40 * enabled by @sleep_wake for this feature to work)
42 * If given platform is generally capable of power managing PCI devices, all of
43 * these callbacks are mandatory.
45 struct pci_platform_pm_ops {
46 bool (*is_manageable)(struct pci_dev *dev);
47 int (*set_state)(struct pci_dev *dev, pci_power_t state);
48 pci_power_t (*choose_state)(struct pci_dev *dev);
49 bool (*can_wakeup)(struct pci_dev *dev);
50 int (*sleep_wake)(struct pci_dev *dev, bool enable);
51 int (*run_wake)(struct pci_dev *dev, bool enable);
54 extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops);
55 extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state);
56 extern void pci_disable_enabled_device(struct pci_dev *dev);
57 extern bool pci_check_pme_status(struct pci_dev *dev);
58 extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign);
59 extern void pci_pme_wakeup_bus(struct pci_bus *bus);
60 extern void pci_pm_init(struct pci_dev *dev);
61 extern void platform_pci_wakeup_init(struct pci_dev *dev);
62 extern void pci_allocate_cap_save_buffers(struct pci_dev *dev);
64 static inline bool pci_is_bridge(struct pci_dev *pci_dev)
66 return !!(pci_dev->subordinate);
69 extern int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
70 extern int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
71 extern int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
72 extern int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
73 extern int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
74 extern int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
77 ssize_t (*read)(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
78 ssize_t (*write)(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
79 void (*release)(struct pci_dev *dev);
84 const struct pci_vpd_ops *ops;
85 struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
88 extern int pci_vpd_pci22_init(struct pci_dev *dev);
89 static inline void pci_vpd_release(struct pci_dev *dev)
92 dev->vpd->ops->release(dev);
95 /* PCI /proc functions */
97 extern int pci_proc_attach_device(struct pci_dev *dev);
98 extern int pci_proc_detach_device(struct pci_dev *dev);
99 extern int pci_proc_detach_bus(struct pci_bus *bus);
101 static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
102 static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
103 static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
106 /* Functions for PCI Hotplug drivers to use */
107 extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
109 #ifdef HAVE_PCI_LEGACY
110 extern void pci_create_legacy_files(struct pci_bus *bus);
111 extern void pci_remove_legacy_files(struct pci_bus *bus);
113 static inline void pci_create_legacy_files(struct pci_bus *bus) { return; }
114 static inline void pci_remove_legacy_files(struct pci_bus *bus) { return; }
117 /* Lock for read/write access to pci device and bus lists */
118 extern struct rw_semaphore pci_bus_sem;
120 extern unsigned int pci_pm_d3_delay;
122 #ifdef CONFIG_PCI_MSI
123 void pci_no_msi(void);
124 extern void pci_msi_init_pci_dev(struct pci_dev *dev);
126 static inline void pci_no_msi(void) { }
127 static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { }
130 #ifdef CONFIG_PCIEAER
131 void pci_no_aer(void);
133 static inline void pci_no_aer(void) { }
136 static inline int pci_no_d1d2(struct pci_dev *dev)
138 unsigned int parent_dstates = 0;
141 parent_dstates = dev->bus->self->no_d1d2;
142 return (dev->no_d1d2 || parent_dstates);
145 extern struct device_attribute pci_dev_attrs[];
146 extern struct device_attribute dev_attr_cpuaffinity;
147 extern struct device_attribute dev_attr_cpulistaffinity;
148 #ifdef CONFIG_HOTPLUG
149 extern struct bus_attribute pci_bus_attrs[];
151 #define pci_bus_attrs NULL
156 * pci_match_one_device - Tell if a PCI device structure has a matching
157 * PCI device id structure
158 * @id: single PCI device id structure to match
159 * @dev: the PCI device structure to match against
161 * Returns the matching pci_device_id structure or %NULL if there is no match.
163 static inline const struct pci_device_id *
164 pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev)
166 if ((id->vendor == PCI_ANY_ID || id->vendor == dev->vendor) &&
167 (id->device == PCI_ANY_ID || id->device == dev->device) &&
168 (id->subvendor == PCI_ANY_ID || id->subvendor == dev->subsystem_vendor) &&
169 (id->subdevice == PCI_ANY_ID || id->subdevice == dev->subsystem_device) &&
170 !((id->class ^ dev->class) & id->class_mask))
175 struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev);
177 /* PCI slot sysfs helper code */
178 #define to_pci_slot(s) container_of(s, struct pci_slot, kobj)
180 extern struct kset *pci_slots_kset;
182 struct pci_slot_attribute {
183 struct attribute attr;
184 ssize_t (*show)(struct pci_slot *, char *);
185 ssize_t (*store)(struct pci_slot *, const char *, size_t);
187 #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr)
190 pci_bar_unknown, /* Standard PCI BAR probe */
191 pci_bar_io, /* An io port BAR */
192 pci_bar_mem32, /* A 32-bit memory BAR */
193 pci_bar_mem64, /* A 64-bit memory BAR */
196 extern int pci_setup_device(struct pci_dev *dev);
197 extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
198 struct resource *res, unsigned int reg);
199 extern int pci_resource_bar(struct pci_dev *dev, int resno,
200 enum pci_bar_type *type);
201 extern int pci_bus_add_child(struct pci_bus *bus);
202 extern void pci_enable_ari(struct pci_dev *dev);
204 * pci_ari_enabled - query ARI forwarding status
207 * Returns 1 if ARI forwarding is enabled, or 0 if not enabled;
209 static inline int pci_ari_enabled(struct pci_bus *bus)
211 return bus->self && bus->self->ari_enabled;
214 #ifdef CONFIG_PCI_QUIRKS
215 extern int pci_is_reassigndev(struct pci_dev *dev);
216 resource_size_t pci_specified_resource_alignment(struct pci_dev *dev);
217 extern 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; /* total VFs associated with the PF */
227 u16 initial; /* initial VFs associated with the PF */
228 u16 nr_virtfn; /* 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 struct pci_dev *dev; /* lowest numbered PF */
234 struct pci_dev *self; /* this PF */
235 struct mutex lock; /* lock for VF bus */
236 struct work_struct mtask; /* VF Migration task */
237 u8 __iomem *mstate; /* VF Migration State Array */
240 /* Address Translation Service */
242 int pos; /* capability position */
243 int stu; /* Smallest Translation Unit */
244 int qdep; /* Invalidate Queue Depth */
245 int ref_cnt; /* Physical Function reference count */
246 int is_enabled:1; /* Enable bit is set */
249 #ifdef CONFIG_PCI_IOV
250 extern int pci_iov_init(struct pci_dev *dev);
251 extern void pci_iov_release(struct pci_dev *dev);
252 extern int pci_iov_resource_bar(struct pci_dev *dev, int resno,
253 enum pci_bar_type *type);
254 extern int pci_sriov_resource_alignment(struct pci_dev *dev, int resno);
255 extern void pci_restore_iov_state(struct pci_dev *dev);
256 extern int pci_iov_bus_range(struct pci_bus *bus);
258 extern int pci_enable_ats(struct pci_dev *dev, int ps);
259 extern void pci_disable_ats(struct pci_dev *dev);
260 extern int pci_ats_queue_depth(struct pci_dev *dev);
262 * pci_ats_enabled - query the ATS status
263 * @dev: the PCI device
265 * Returns 1 if ATS capability is enabled, or 0 if not.
267 static inline int pci_ats_enabled(struct pci_dev *dev)
269 return dev->ats && dev->ats->is_enabled;
272 static inline int pci_iov_init(struct pci_dev *dev)
276 static inline void pci_iov_release(struct pci_dev *dev)
280 static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno,
281 enum pci_bar_type *type)
285 static inline void pci_restore_iov_state(struct pci_dev *dev)
288 static inline int pci_iov_bus_range(struct pci_bus *bus)
293 static inline int pci_enable_ats(struct pci_dev *dev, int ps)
297 static inline void pci_disable_ats(struct pci_dev *dev)
300 static inline int pci_ats_queue_depth(struct pci_dev *dev)
304 static inline int pci_ats_enabled(struct pci_dev *dev)
308 #endif /* CONFIG_PCI_IOV */
310 static inline int pci_resource_alignment(struct pci_dev *dev,
311 struct resource *res)
313 #ifdef CONFIG_PCI_IOV
314 int resno = res - dev->resource;
316 if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END)
317 return pci_sriov_resource_alignment(dev, resno);
319 return resource_alignment(res);
322 extern void pci_enable_acs(struct pci_dev *dev);
324 struct pci_dev_reset_methods {
327 int (*reset)(struct pci_dev *dev, int probe);
330 #ifdef CONFIG_PCI_QUIRKS
331 extern int pci_dev_specific_reset(struct pci_dev *dev, int probe);
333 static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
339 #endif /* DRIVERS_PCI_H */