Commit | Line | Data |
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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 | ||
343e51ae JK |
9 | extern const unsigned char pcix_bus_speed[]; |
10 | extern const unsigned char pcie_link_speed[]; | |
11 | ||
1da177e4 LT |
12 | /* Functions internal to the PCI core code */ |
13 | ||
f39d5b72 BH |
14 | int pci_create_sysfs_dev_files(struct pci_dev *pdev); |
15 | void pci_remove_sysfs_dev_files(struct pci_dev *pdev); | |
6058989b | 16 | #if !defined(CONFIG_DMI) && !defined(CONFIG_ACPI) |
911e1c9b | 17 | static inline void pci_create_firmware_label_files(struct pci_dev *pdev) |
b879743f | 18 | { return; } |
911e1c9b | 19 | static inline void pci_remove_firmware_label_files(struct pci_dev *pdev) |
b879743f | 20 | { return; } |
911e1c9b | 21 | #else |
f39d5b72 BH |
22 | void pci_create_firmware_label_files(struct pci_dev *pdev); |
23 | void pci_remove_firmware_label_files(struct pci_dev *pdev); | |
911e1c9b | 24 | #endif |
f39d5b72 | 25 | void pci_cleanup_rom(struct pci_dev *dev); |
9eff02e2 | 26 | #ifdef HAVE_PCI_MMAP |
3b519e4e MW |
27 | enum pci_mmap_api { |
28 | PCI_MMAP_SYSFS, /* mmap on /sys/bus/pci/devices/<BDF>/resource<N> */ | |
29 | PCI_MMAP_PROCFS /* mmap on /proc/bus/pci/<BDF> */ | |
30 | }; | |
f39d5b72 BH |
31 | int pci_mmap_fits(struct pci_dev *pdev, int resno, struct vm_area_struct *vmai, |
32 | enum pci_mmap_api mmap_api); | |
9eff02e2 | 33 | #endif |
711d5779 | 34 | int pci_probe_reset_function(struct pci_dev *dev); |
ce5ccdef | 35 | |
961d9120 | 36 | /** |
b33bfdef | 37 | * struct pci_platform_pm_ops - Firmware PM callbacks |
961d9120 | 38 | * |
b33bfdef RD |
39 | * @is_manageable: returns 'true' if given device is power manageable by the |
40 | * platform firmware | |
961d9120 | 41 | * |
b33bfdef | 42 | * @set_state: invokes the platform firmware to set the device's power state |
961d9120 | 43 | * |
b33bfdef RD |
44 | * @choose_state: returns PCI power state of given device preferred by the |
45 | * platform; to be used during system-wide transitions from a | |
46 | * sleeping state to the working state and vice versa | |
961d9120 | 47 | * |
b33bfdef | 48 | * @sleep_wake: enables/disables the system wake up capability of given device |
eb9d0fe4 | 49 | * |
b67ea761 RW |
50 | * @run_wake: enables/disables the platform to generate run-time wake-up events |
51 | * for given device (the device's wake-up capability has to be | |
52 | * enabled by @sleep_wake for this feature to work) | |
53 | * | |
961d9120 RW |
54 | * If given platform is generally capable of power managing PCI devices, all of |
55 | * these callbacks are mandatory. | |
56 | */ | |
57 | struct pci_platform_pm_ops { | |
58 | bool (*is_manageable)(struct pci_dev *dev); | |
59 | int (*set_state)(struct pci_dev *dev, pci_power_t state); | |
60 | pci_power_t (*choose_state)(struct pci_dev *dev); | |
eb9d0fe4 | 61 | int (*sleep_wake)(struct pci_dev *dev, bool enable); |
b67ea761 | 62 | int (*run_wake)(struct pci_dev *dev, bool enable); |
961d9120 RW |
63 | }; |
64 | ||
f39d5b72 BH |
65 | int pci_set_platform_pm(struct pci_platform_pm_ops *ops); |
66 | void pci_update_current_state(struct pci_dev *dev, pci_power_t state); | |
67 | void pci_power_up(struct pci_dev *dev); | |
68 | void pci_disable_enabled_device(struct pci_dev *dev); | |
69 | int pci_finish_runtime_suspend(struct pci_dev *dev); | |
70 | int __pci_pme_wakeup(struct pci_dev *dev, void *ign); | |
71 | void pci_wakeup_bus(struct pci_bus *bus); | |
72 | void pci_config_pm_runtime_get(struct pci_dev *dev); | |
73 | void pci_config_pm_runtime_put(struct pci_dev *dev); | |
74 | void pci_pm_init(struct pci_dev *dev); | |
75 | void pci_allocate_cap_save_buffers(struct pci_dev *dev); | |
f796841e | 76 | void pci_free_cap_save_buffers(struct pci_dev *dev); |
aa8c6c93 | 77 | |
b6e335ae RW |
78 | static inline void pci_wakeup_event(struct pci_dev *dev) |
79 | { | |
80 | /* Wait 100 ms before the system can be put into a sleep state. */ | |
81 | pm_wakeup_event(&dev->dev, 100); | |
82 | } | |
83 | ||
aa8c6c93 RW |
84 | static inline bool pci_is_bridge(struct pci_dev *pci_dev) |
85 | { | |
86 | return !!(pci_dev->subordinate); | |
87 | } | |
0f64474b | 88 | |
94e61088 | 89 | struct pci_vpd_ops { |
287d19ce SH |
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); | |
94e61088 BH |
92 | void (*release)(struct pci_dev *dev); |
93 | }; | |
94 | ||
95 | struct pci_vpd { | |
99cb233d | 96 | unsigned int len; |
287d19ce | 97 | const struct pci_vpd_ops *ops; |
94e61088 BH |
98 | struct bin_attribute *attr; /* descriptor for sysfs VPD entry */ |
99 | }; | |
100 | ||
f39d5b72 | 101 | int pci_vpd_pci22_init(struct pci_dev *dev); |
94e61088 BH |
102 | static inline void pci_vpd_release(struct pci_dev *dev) |
103 | { | |
104 | if (dev->vpd) | |
105 | dev->vpd->ops->release(dev); | |
106 | } | |
107 | ||
1da177e4 LT |
108 | /* PCI /proc functions */ |
109 | #ifdef CONFIG_PROC_FS | |
f39d5b72 BH |
110 | int pci_proc_attach_device(struct pci_dev *dev); |
111 | int pci_proc_detach_device(struct pci_dev *dev); | |
112 | int pci_proc_detach_bus(struct pci_bus *bus); | |
1da177e4 LT |
113 | #else |
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; } | |
1da177e4 LT |
116 | static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; } |
117 | #endif | |
118 | ||
119 | /* Functions for PCI Hotplug drivers to use */ | |
a8e4b9c1 | 120 | int pci_hp_add_bridge(struct pci_dev *dev); |
1da177e4 | 121 | |
f19aeb1f | 122 | #ifdef HAVE_PCI_LEGACY |
f39d5b72 BH |
123 | void pci_create_legacy_files(struct pci_bus *bus); |
124 | void pci_remove_legacy_files(struct pci_bus *bus); | |
f19aeb1f BH |
125 | #else |
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; } | |
128 | #endif | |
1da177e4 LT |
129 | |
130 | /* Lock for read/write access to pci device and bus lists */ | |
d71374da | 131 | extern struct rw_semaphore pci_bus_sem; |
1da177e4 | 132 | |
a2e27787 JK |
133 | extern raw_spinlock_t pci_lock; |
134 | ||
ffadcc2f | 135 | extern unsigned int pci_pm_d3_delay; |
88187dfa | 136 | |
4b47b0ee | 137 | #ifdef CONFIG_PCI_MSI |
309e57df | 138 | void pci_no_msi(void); |
f39d5b72 | 139 | void pci_msi_init_pci_dev(struct pci_dev *dev); |
4b47b0ee | 140 | #else |
309e57df | 141 | static inline void pci_no_msi(void) { } |
4aa9bc95 | 142 | static inline void pci_msi_init_pci_dev(struct pci_dev *dev) { } |
4b47b0ee | 143 | #endif |
8fed4b65 | 144 | |
b55438fd | 145 | void pci_realloc_get_opt(char *); |
f483d392 | 146 | |
ffadcc2f KCA |
147 | static inline int pci_no_d1d2(struct pci_dev *dev) |
148 | { | |
149 | unsigned int parent_dstates = 0; | |
4b47b0ee | 150 | |
ffadcc2f KCA |
151 | if (dev->bus->self) |
152 | parent_dstates = dev->bus->self->no_d1d2; | |
153 | return (dev->no_d1d2 || parent_dstates); | |
154 | ||
155 | } | |
5136b2da | 156 | extern const struct attribute_group *pci_dev_groups[]; |
56039e65 | 157 | extern const struct attribute_group *pcibus_groups[]; |
4e15c46b | 158 | extern struct device_type pci_dev_type; |
0f49ba55 | 159 | extern const struct attribute_group *pci_bus_groups[]; |
705b1aaa | 160 | |
1da177e4 LT |
161 | |
162 | /** | |
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 | |
367b09fe | 167 | * |
1da177e4 LT |
168 | * Returns the matching pci_device_id structure or %NULL if there is no match. |
169 | */ | |
170 | static inline const struct pci_device_id * | |
171 | pci_match_one_device(const struct pci_device_id *id, const struct pci_dev *dev) | |
172 | { | |
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)) | |
178 | return id; | |
179 | return NULL; | |
180 | } | |
181 | ||
f46753c5 AC |
182 | /* PCI slot sysfs helper code */ |
183 | #define to_pci_slot(s) container_of(s, struct pci_slot, kobj) | |
184 | ||
185 | extern struct kset *pci_slots_kset; | |
186 | ||
187 | struct pci_slot_attribute { | |
188 | struct attribute attr; | |
189 | ssize_t (*show)(struct pci_slot *, char *); | |
190 | ssize_t (*store)(struct pci_slot *, const char *, size_t); | |
191 | }; | |
192 | #define to_pci_slot_attr(s) container_of(s, struct pci_slot_attribute, attr) | |
193 | ||
0b400c7e YZ |
194 | enum pci_bar_type { |
195 | pci_bar_unknown, /* Standard PCI BAR probe */ | |
196 | pci_bar_io, /* An io port BAR */ | |
197 | pci_bar_mem32, /* A 32-bit memory BAR */ | |
198 | pci_bar_mem64, /* A 64-bit memory BAR */ | |
199 | }; | |
200 | ||
efdc87da YL |
201 | bool pci_bus_read_dev_vendor_id(struct pci_bus *bus, int devfn, u32 *pl, |
202 | int crs_timeout); | |
f39d5b72 BH |
203 | int pci_setup_device(struct pci_dev *dev); |
204 | int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, | |
205 | struct resource *res, unsigned int reg); | |
206 | int pci_resource_bar(struct pci_dev *dev, int resno, enum pci_bar_type *type); | |
207 | void pci_configure_ari(struct pci_dev *dev); | |
d66ecb72 JL |
208 | void __ref __pci_bus_size_bridges(struct pci_bus *bus, |
209 | struct list_head *realloc_head); | |
210 | void __ref __pci_bus_assign_resources(const struct pci_bus *bus, | |
211 | struct list_head *realloc_head, | |
212 | struct list_head *fail_head); | |
939de1d6 | 213 | |
58c3a727 YZ |
214 | /** |
215 | * pci_ari_enabled - query ARI forwarding status | |
6a49d812 | 216 | * @bus: the PCI bus |
58c3a727 YZ |
217 | * |
218 | * Returns 1 if ARI forwarding is enabled, or 0 if not enabled; | |
219 | */ | |
6a49d812 | 220 | static inline int pci_ari_enabled(struct pci_bus *bus) |
58c3a727 | 221 | { |
6a49d812 | 222 | return bus->self && bus->self->ari_enabled; |
58c3a727 YZ |
223 | } |
224 | ||
2069ecfb | 225 | void pci_reassigndev_resource_alignment(struct pci_dev *dev); |
f39d5b72 | 226 | void pci_disable_bridge_window(struct pci_dev *dev); |
32a9a682 | 227 | |
d1b054da YZ |
228 | /* Single Root I/O Virtualization */ |
229 | struct pci_sriov { | |
230 | int pos; /* capability position */ | |
231 | int nres; /* number of resources */ | |
232 | u32 cap; /* SR-IOV Capabilities */ | |
233 | u16 ctrl; /* SR-IOV Control */ | |
6b136724 BH |
234 | u16 total_VFs; /* total VFs associated with the PF */ |
235 | u16 initial_VFs; /* initial VFs associated with the PF */ | |
236 | u16 num_VFs; /* number of VFs available */ | |
d1b054da YZ |
237 | u16 offset; /* first VF Routing ID offset */ |
238 | u16 stride; /* following VF stride */ | |
239 | u32 pgsz; /* page size for BAR alignment */ | |
240 | u8 link; /* Function Dependency Link */ | |
6b136724 | 241 | u16 driver_max_VFs; /* max num VFs driver supports */ |
d1b054da YZ |
242 | struct pci_dev *dev; /* lowest numbered PF */ |
243 | struct pci_dev *self; /* this PF */ | |
244 | struct mutex lock; /* lock for VF bus */ | |
74bb1bcc YZ |
245 | struct work_struct mtask; /* VF Migration task */ |
246 | u8 __iomem *mstate; /* VF Migration State Array */ | |
d1b054da YZ |
247 | }; |
248 | ||
1900ca13 | 249 | #ifdef CONFIG_PCI_ATS |
f39d5b72 | 250 | void pci_restore_ats_state(struct pci_dev *dev); |
1900ca13 HX |
251 | #else |
252 | static inline void pci_restore_ats_state(struct pci_dev *dev) | |
253 | { | |
254 | } | |
255 | #endif /* CONFIG_PCI_ATS */ | |
256 | ||
d1b054da | 257 | #ifdef CONFIG_PCI_IOV |
f39d5b72 BH |
258 | int pci_iov_init(struct pci_dev *dev); |
259 | void pci_iov_release(struct pci_dev *dev); | |
260 | int pci_iov_resource_bar(struct pci_dev *dev, int resno, | |
261 | enum pci_bar_type *type); | |
262 | resource_size_t pci_sriov_resource_alignment(struct pci_dev *dev, int resno); | |
263 | void pci_restore_iov_state(struct pci_dev *dev); | |
264 | int pci_iov_bus_range(struct pci_bus *bus); | |
302b4215 | 265 | |
d1b054da YZ |
266 | #else |
267 | static inline int pci_iov_init(struct pci_dev *dev) | |
268 | { | |
269 | return -ENODEV; | |
270 | } | |
271 | static inline void pci_iov_release(struct pci_dev *dev) | |
272 | ||
273 | { | |
274 | } | |
275 | static inline int pci_iov_resource_bar(struct pci_dev *dev, int resno, | |
276 | enum pci_bar_type *type) | |
277 | { | |
278 | return 0; | |
279 | } | |
8c5cdb6a YZ |
280 | static inline void pci_restore_iov_state(struct pci_dev *dev) |
281 | { | |
282 | } | |
a28724b0 YZ |
283 | static inline int pci_iov_bus_range(struct pci_bus *bus) |
284 | { | |
285 | return 0; | |
286 | } | |
302b4215 | 287 | |
d1b054da YZ |
288 | #endif /* CONFIG_PCI_IOV */ |
289 | ||
f39d5b72 | 290 | unsigned long pci_cardbus_resource_alignment(struct resource *); |
0a2daa1c | 291 | |
0e52247a | 292 | static inline resource_size_t pci_resource_alignment(struct pci_dev *dev, |
f39d5b72 | 293 | struct resource *res) |
6faf17f6 CW |
294 | { |
295 | #ifdef CONFIG_PCI_IOV | |
296 | int resno = res - dev->resource; | |
297 | ||
298 | if (resno >= PCI_IOV_RESOURCES && resno <= PCI_IOV_RESOURCE_END) | |
299 | return pci_sriov_resource_alignment(dev, resno); | |
300 | #endif | |
0a2daa1c RP |
301 | if (dev->class >> 8 == PCI_CLASS_BRIDGE_CARDBUS) |
302 | return pci_cardbus_resource_alignment(res); | |
6faf17f6 CW |
303 | return resource_alignment(res); |
304 | } | |
305 | ||
f39d5b72 | 306 | void pci_enable_acs(struct pci_dev *dev); |
ae21ee65 | 307 | |
b9c3b266 DC |
308 | struct pci_dev_reset_methods { |
309 | u16 vendor; | |
310 | u16 device; | |
311 | int (*reset)(struct pci_dev *dev, int probe); | |
312 | }; | |
313 | ||
93177a74 | 314 | #ifdef CONFIG_PCI_QUIRKS |
f39d5b72 | 315 | int pci_dev_specific_reset(struct pci_dev *dev, int probe); |
93177a74 RW |
316 | #else |
317 | static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe) | |
318 | { | |
319 | return -ENOTTY; | |
320 | } | |
321 | #endif | |
b9c3b266 | 322 | |
557848c3 | 323 | #endif /* DRIVERS_PCI_H */ |