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557848c3 ZY |
1 | #ifndef DRIVERS_PCI_H |
2 | #define DRIVERS_PCI_H | |
3 | ||
74bb1bcc YZ |
4 | #include <linux/workqueue.h> |
5 | ||
557848c3 ZY |
6 | #define PCI_CFG_SPACE_SIZE 256 |
7 | #define PCI_CFG_SPACE_EXP_SIZE 4096 | |
8 | ||
1da177e4 LT |
9 | /* Functions internal to the PCI core code */ |
10 | ||
7eff2e7a | 11 | extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); |
1da177e4 LT |
12 | extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); |
13 | extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); | |
911e1c9b N |
14 | #ifndef CONFIG_DMI |
15 | static inline void pci_create_firmware_label_files(struct pci_dev *pdev) | |
b879743f | 16 | { return; } |
911e1c9b | 17 | static inline void pci_remove_firmware_label_files(struct pci_dev *pdev) |
b879743f | 18 | { return; } |
911e1c9b N |
19 | #else |
20 | extern void pci_create_firmware_label_files(struct pci_dev *pdev); | |
21 | extern void pci_remove_firmware_label_files(struct pci_dev *pdev); | |
22 | #endif | |
1da177e4 | 23 | extern void pci_cleanup_rom(struct pci_dev *dev); |
9eff02e2 JB |
24 | #ifdef HAVE_PCI_MMAP |
25 | extern int pci_mmap_fits(struct pci_dev *pdev, int resno, | |
26 | struct vm_area_struct *vma); | |
27 | #endif | |
711d5779 | 28 | int pci_probe_reset_function(struct pci_dev *dev); |
ce5ccdef | 29 | |
961d9120 | 30 | /** |
b33bfdef | 31 | * struct pci_platform_pm_ops - Firmware PM callbacks |
961d9120 | 32 | * |
b33bfdef RD |
33 | * @is_manageable: returns 'true' if given device is power manageable by the |
34 | * platform firmware | |
961d9120 | 35 | * |
b33bfdef | 36 | * @set_state: invokes the platform firmware to set the device's power state |
961d9120 | 37 | * |
b33bfdef RD |
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 | |
961d9120 | 41 | * |
b33bfdef RD |
42 | * @can_wakeup: returns 'true' if given device is capable of waking up the |
43 | * system from a sleeping state | |
eb9d0fe4 | 44 | * |
b33bfdef | 45 | * @sleep_wake: enables/disables the system wake up capability of given device |
eb9d0fe4 | 46 | * |
b67ea761 RW |
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) | |
50 | * | |
961d9120 RW |
51 | * If given platform is generally capable of power managing PCI devices, all of |
52 | * these callbacks are mandatory. | |
53 | */ | |
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); | |
eb9d0fe4 RW |
58 | bool (*can_wakeup)(struct pci_dev *dev); |
59 | int (*sleep_wake)(struct pci_dev *dev, bool enable); | |
b67ea761 | 60 | int (*run_wake)(struct pci_dev *dev, bool enable); |
961d9120 RW |
61 | }; |
62 | ||
63 | extern int pci_set_platform_pm(struct pci_platform_pm_ops *ops); | |
73410429 | 64 | extern void pci_update_current_state(struct pci_dev *dev, pci_power_t state); |
fa58d305 | 65 | extern void pci_disable_enabled_device(struct pci_dev *dev); |
6cbf8214 | 66 | extern int pci_finish_runtime_suspend(struct pci_dev *dev); |
b67ea761 | 67 | extern int __pci_pme_wakeup(struct pci_dev *dev, void *ign); |
eb9d0fe4 | 68 | extern void pci_pm_init(struct pci_dev *dev); |
eb9c39d0 | 69 | extern void platform_pci_wakeup_init(struct pci_dev *dev); |
63f4898a | 70 | extern void pci_allocate_cap_save_buffers(struct pci_dev *dev); |
aa8c6c93 RW |
71 | |
72 | static inline bool pci_is_bridge(struct pci_dev *pci_dev) | |
73 | { | |
74 | return !!(pci_dev->subordinate); | |
75 | } | |
0f64474b | 76 | |
e04b0ea2 BK |
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); | |
83 | ||
94e61088 | 84 | struct pci_vpd_ops { |
287d19ce SH |
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); | |
94e61088 BH |
87 | void (*release)(struct pci_dev *dev); |
88 | }; | |
89 | ||
90 | struct pci_vpd { | |
99cb233d | 91 | unsigned int len; |
287d19ce | 92 | const struct pci_vpd_ops *ops; |
94e61088 BH |
93 | struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ |
94 | }; | |
95 | ||
96 | extern int pci_vpd_pci22_init(struct pci_dev *dev); | |
97 | static inline void pci_vpd_release(struct pci_dev *dev) | |
98 | { | |
99 | if (dev->vpd) | |
100 | dev->vpd->ops->release(dev); | |
101 | } | |
102 | ||
1da177e4 LT |
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); | |
1da177e4 LT |
107 | extern int pci_proc_detach_bus(struct pci_bus *bus); |
108 | #else | |
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; } | |
1da177e4 LT |
111 | static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; } |
112 | #endif | |
113 | ||
114 | /* Functions for PCI Hotplug drivers to use */ | |
1da177e4 | 115 | extern unsigned int pci_do_scan_bus(struct pci_bus *bus); |
1da177e4 | 116 | |
f19aeb1f BH |
117 | #ifdef HAVE_PCI_LEGACY |
118 | extern void pci_create_legacy_files(struct pci_bus *bus); | |
1da177e4 | 119 | extern void pci_remove_legacy_files(struct pci_bus *bus); |
f19aeb1f BH |
120 | #else |
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; } | |
123 | #endif | |
1da177e4 LT |
124 | |
125 | /* Lock for read/write access to pci device and bus lists */ | |
d71374da | 126 | extern struct rw_semaphore pci_bus_sem; |
1da177e4 | 127 | |
ffadcc2f | 128 | extern unsigned int pci_pm_d3_delay; |
88187dfa | 129 | |
4b47b0ee | 130 | #ifdef CONFIG_PCI_MSI |
309e57df | 131 | void pci_no_msi(void); |
4aa9bc95 | 132 | extern void pci_msi_init_pci_dev(struct pci_dev *dev); |
4b47b0ee | 133 | #else |
309e57df | 134 | static inline void pci_no_msi(void) { } |
4aa9bc95 | 135 | static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } |
4b47b0ee | 136 | #endif |
8fed4b65 | 137 | |
7f785763 RD |
138 | #ifdef CONFIG_PCIEAER |
139 | void pci_no_aer(void); | |
f1a7bfaf | 140 | bool pci_aer_available(void); |
7f785763 RD |
141 | #else |
142 | static inline void pci_no_aer(void) { } | |
f1a7bfaf | 143 | static inline bool pci_aer_available(void) { return false; } |
7f785763 RD |
144 | #endif |
145 | ||
ffadcc2f KCA |
146 | static inline int pci_no_d1d2(struct pci_dev *dev) |
147 | { | |
148 | unsigned int parent_dstates = 0; | |
4b47b0ee | 149 | |
ffadcc2f KCA |
150 | if (dev->bus->self) |
151 | parent_dstates = dev->bus->self->no_d1d2; | |
152 | return (dev->no_d1d2 || parent_dstates); | |
153 | ||
154 | } | |
1da177e4 | 155 | extern struct device_attribute pci_dev_attrs[]; |
fd7d1ced | 156 | extern struct device_attribute dev_attr_cpuaffinity; |
93ff68a5 | 157 | extern struct device_attribute dev_attr_cpulistaffinity; |
705b1aaa AC |
158 | #ifdef CONFIG_HOTPLUG |
159 | extern struct bus_attribute pci_bus_attrs[]; | |
160 | #else | |
161 | #define pci_bus_attrs NULL | |
162 | #endif | |
163 | ||
1da177e4 LT |
164 | |
165 | /** | |
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 | |
367b09fe | 170 | * |
1da177e4 LT |
171 | * Returns the matching pci_device_id structure or %NULL if there is no match. |
172 | */ | |
173 | static inline const struct pci_device_id * | |
174 | pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) | |
175 | { | |
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)) | |
181 | return id; | |
182 | return NULL; | |
183 | } | |
184 | ||
994a65e2 | 185 | struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); |
f46753c5 AC |
186 | |
187 | /* PCI slot sysfs helper code */ | |
188 | #define to_pci_slot(s) container_of(s, struct pci_slot, kobj) | |
189 | ||
190 | extern struct kset *pci_slots_kset; | |
191 | ||
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); | |
196 | }; | |
197 | #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) | |
198 | ||
0b400c7e YZ |
199 | enum pci_bar_type { |
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 */ | |
204 | }; | |
205 | ||
480b93b7 | 206 | extern int pci_setup_device(struct pci_dev *dev); |
0b400c7e YZ |
207 | extern int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, |
208 | struct resource *res, unsigned int reg); | |
613e7ed6 YZ |
209 | extern int pci_resource_bar(struct pci_dev *dev, int resno, |
210 | enum pci_bar_type *type); | |
876e501a | 211 | extern int pci_bus_add_child(struct pci_bus *bus); |
58c3a727 YZ |
212 | extern void pci_enable_ari(struct pci_dev *dev); |
213 | /** | |
214 | * pci_ari_enabled - query ARI forwarding status | |
6a49d812 | 215 | * @bus: the PCI bus |
58c3a727 YZ |
216 | * |
217 | * Returns 1 if ARI forwarding is enabled, or 0 if not enabled; | |
218 | */ | |
6a49d812 | 219 | static inline int pci_ari_enabled(struct pci_bus *bus) |
58c3a727 | 220 | { |
6a49d812 | 221 | return bus->self && bus->self->ari_enabled; |
58c3a727 YZ |
222 | } |
223 | ||
32a9a682 YS |
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); | |
228 | #endif | |
229 | ||
d1b054da YZ |
230 | /* Single Root I/O Virtualization */ |
231 | struct pci_sriov { | |
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 */ | |
dd7cc44d YZ |
237 | u16 initial; /* initial VFs associated with the PF */ |
238 | u16 nr_virtfn; /* number of VFs available */ | |
d1b054da YZ |
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 */ | |
74bb1bcc YZ |
246 | struct work_struct mtask; /* VF Migration task */ |
247 | u8 __iomem *mstate; /* VF Migration State Array */ | |
d1b054da YZ |
248 | }; |
249 | ||
302b4215 YZ |
250 | /* Address Translation Service */ |
251 | struct pci_ats { | |
252 | int pos; /* capability position */ | |
253 | int stu; /* Smallest Translation Unit */ | |
254 | int qdep; /* Invalidate Queue Depth */ | |
e277d2fc | 255 | int ref_cnt; /* Physical Function reference count */ |
8356dda2 | 256 | unsigned int is_enabled:1; /* Enable bit is set */ |
302b4215 YZ |
257 | }; |
258 | ||
d1b054da YZ |
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); | |
0e52247a CM |
264 | extern resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, |
265 | int resno); | |
8c5cdb6a | 266 | extern void pci_restore_iov_state(struct pci_dev *dev); |
a28724b0 | 267 | extern int pci_iov_bus_range(struct pci_bus *bus); |
302b4215 YZ |
268 | |
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); | |
272 | /** | |
273 | * pci_ats_enabled - query the ATS status | |
274 | * @dev: the PCI device | |
275 | * | |
276 | * Returns 1 if ATS capability is enabled, or 0 if not. | |
277 | */ | |
278 | static inline int pci_ats_enabled(struct pci_dev *dev) | |
279 | { | |
e277d2fc | 280 | return dev->ats && dev->ats->is_enabled; |
302b4215 | 281 | } |
d1b054da YZ |
282 | #else |
283 | static inline int pci_iov_init(struct pci_dev *dev) | |
284 | { | |
285 | return -ENODEV; | |
286 | } | |
287 | static inline void pci_iov_release(struct pci_dev *dev) | |
288 | ||
289 | { | |
290 | } | |
291 | static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno, | |
292 | enum pci_bar_type *type) | |
293 | { | |
294 | return 0; | |
295 | } | |
8c5cdb6a YZ |
296 | static inline void pci_restore_iov_state(struct pci_dev *dev) |
297 | { | |
298 | } | |
a28724b0 YZ |
299 | static inline int pci_iov_bus_range(struct pci_bus *bus) |
300 | { | |
301 | return 0; | |
302 | } | |
302b4215 YZ |
303 | |
304 | static inline int pci_enable_ats(struct pci_dev *dev, int ps) | |
305 | { | |
306 | return -ENODEV; | |
307 | } | |
308 | static inline void pci_disable_ats(struct pci_dev *dev) | |
309 | { | |
310 | } | |
311 | static inline int pci_ats_queue_depth(struct pci_dev *dev) | |
312 | { | |
313 | return -ENODEV; | |
314 | } | |
315 | static inline int pci_ats_enabled(struct pci_dev *dev) | |
316 | { | |
317 | return 0; | |
318 | } | |
d1b054da YZ |
319 | #endif /* CONFIG_PCI_IOV */ |
320 | ||
0e52247a | 321 | static inline resource_size_t pci_resource_alignment(struct pci_dev *dev, |
6faf17f6 CW |
322 | struct resource *res) |
323 | { | |
324 | #ifdef CONFIG_PCI_IOV | |
325 | int resno = res - dev->resource; | |
326 | ||
327 | if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END) | |
328 | return pci_sriov_resource_alignment(dev, resno); | |
329 | #endif | |
330 | return resource_alignment(res); | |
331 | } | |
332 | ||
ae21ee65 AK |
333 | extern void pci_enable_acs(struct pci_dev *dev); |
334 | ||
b9c3b266 DC |
335 | struct pci_dev_reset_methods { |
336 | u16 vendor; | |
337 | u16 device; | |
338 | int (*reset)(struct pci_dev *dev, int probe); | |
339 | }; | |
340 | ||
93177a74 | 341 | #ifdef CONFIG_PCI_QUIRKS |
5b889bf2 | 342 | extern int pci_dev_specific_reset(struct pci_dev *dev, int probe); |
93177a74 RW |
343 | #else |
344 | static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe) | |
345 | { | |
346 | return -ENOTTY; | |
347 | } | |
348 | #endif | |
b9c3b266 | 349 | |
557848c3 | 350 | #endif /* DRIVERS_PCI_H */ |