Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * pci.h | |
3 | * | |
4 | * PCI defines and function prototypes | |
5 | * Copyright 1994, Drew Eckhardt | |
6 | * Copyright 1997--1999 Martin Mares <mj@ucw.cz> | |
7 | * | |
8 | * For more information, please consult the following manuals (look at | |
9 | * http://www.pcisig.com/ for how to get them): | |
10 | * | |
11 | * PCI BIOS Specification | |
12 | * PCI Local Bus Specification | |
13 | * PCI to PCI Bridge Specification | |
14 | * PCI System Design Guide | |
15 | */ | |
1da177e4 LT |
16 | #ifndef LINUX_PCI_H |
17 | #define LINUX_PCI_H | |
18 | ||
1da177e4 | 19 | |
778382e0 DW |
20 | #include <linux/mod_devicetable.h> |
21 | ||
1da177e4 | 22 | #include <linux/types.h> |
98db6f19 | 23 | #include <linux/init.h> |
1da177e4 LT |
24 | #include <linux/ioport.h> |
25 | #include <linux/list.h> | |
4a7fb636 | 26 | #include <linux/compiler.h> |
1da177e4 | 27 | #include <linux/errno.h> |
f46753c5 | 28 | #include <linux/kobject.h> |
60063497 | 29 | #include <linux/atomic.h> |
1da177e4 | 30 | #include <linux/device.h> |
1388cc96 | 31 | #include <linux/io.h> |
74bb1bcc | 32 | #include <linux/irqreturn.h> |
607ca46e | 33 | #include <uapi/linux/pci.h> |
1da177e4 | 34 | |
7e7a43c3 AB |
35 | /* Include the ID list */ |
36 | #include <linux/pci_ids.h> | |
37 | ||
f46753c5 AC |
38 | /* pci_slot represents a physical slot */ |
39 | struct pci_slot { | |
40 | struct pci_bus *bus; /* The bus this slot is on */ | |
41 | struct list_head list; /* node in list of slots on this bus */ | |
42 | struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ | |
43 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ | |
44 | struct kobject kobj; | |
45 | }; | |
46 | ||
0ad772ec AC |
47 | static inline const char *pci_slot_name(const struct pci_slot *slot) |
48 | { | |
49 | return kobject_name(&slot->kobj); | |
50 | } | |
51 | ||
1da177e4 LT |
52 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
53 | enum pci_mmap_state { | |
54 | pci_mmap_io, | |
55 | pci_mmap_mem | |
56 | }; | |
57 | ||
58 | /* This defines the direction arg to the DMA mapping routines. */ | |
59 | #define PCI_DMA_BIDIRECTIONAL 0 | |
60 | #define PCI_DMA_TODEVICE 1 | |
61 | #define PCI_DMA_FROMDEVICE 2 | |
62 | #define PCI_DMA_NONE 3 | |
63 | ||
fde09c6d YZ |
64 | /* |
65 | * For PCI devices, the region numbers are assigned this way: | |
66 | */ | |
67 | enum { | |
68 | /* #0-5: standard PCI resources */ | |
69 | PCI_STD_RESOURCES, | |
70 | PCI_STD_RESOURCE_END = 5, | |
71 | ||
72 | /* #6: expansion ROM resource */ | |
73 | PCI_ROM_RESOURCE, | |
74 | ||
d1b054da YZ |
75 | /* device specific resources */ |
76 | #ifdef CONFIG_PCI_IOV | |
77 | PCI_IOV_RESOURCES, | |
78 | PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, | |
79 | #endif | |
80 | ||
fde09c6d YZ |
81 | /* resources assigned to buses behind the bridge */ |
82 | #define PCI_BRIDGE_RESOURCE_NUM 4 | |
83 | ||
84 | PCI_BRIDGE_RESOURCES, | |
85 | PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + | |
86 | PCI_BRIDGE_RESOURCE_NUM - 1, | |
87 | ||
88 | /* total resources associated with a PCI device */ | |
89 | PCI_NUM_RESOURCES, | |
90 | ||
91 | /* preserve this for compatibility */ | |
cda57bf9 | 92 | DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
fde09c6d | 93 | }; |
1da177e4 LT |
94 | |
95 | typedef int __bitwise pci_power_t; | |
96 | ||
4352dfd5 GKH |
97 | #define PCI_D0 ((pci_power_t __force) 0) |
98 | #define PCI_D1 ((pci_power_t __force) 1) | |
99 | #define PCI_D2 ((pci_power_t __force) 2) | |
1da177e4 LT |
100 | #define PCI_D3hot ((pci_power_t __force) 3) |
101 | #define PCI_D3cold ((pci_power_t __force) 4) | |
3fe9d19f | 102 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
438510f6 | 103 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
1da177e4 | 104 | |
00240c38 AS |
105 | /* Remember to update this when the list above changes! */ |
106 | extern const char *pci_power_names[]; | |
107 | ||
108 | static inline const char *pci_power_name(pci_power_t state) | |
109 | { | |
110 | return pci_power_names[1 + (int) state]; | |
111 | } | |
112 | ||
448bd857 HY |
113 | #define PCI_PM_D2_DELAY 200 |
114 | #define PCI_PM_D3_WAIT 10 | |
115 | #define PCI_PM_D3COLD_WAIT 100 | |
116 | #define PCI_PM_BUS_WAIT 50 | |
aa8c6c93 | 117 | |
392a1ce7 | 118 | /** The pci_channel state describes connectivity between the CPU and |
119 | * the pci device. If some PCI bus between here and the pci device | |
120 | * has crashed or locked up, this info is reflected here. | |
121 | */ | |
122 | typedef unsigned int __bitwise pci_channel_state_t; | |
123 | ||
124 | enum pci_channel_state { | |
125 | /* I/O channel is in normal state */ | |
126 | pci_channel_io_normal = (__force pci_channel_state_t) 1, | |
127 | ||
128 | /* I/O to channel is blocked */ | |
129 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, | |
130 | ||
131 | /* PCI card is dead */ | |
132 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, | |
133 | }; | |
134 | ||
f7bdd12d BK |
135 | typedef unsigned int __bitwise pcie_reset_state_t; |
136 | ||
137 | enum pcie_reset_state { | |
138 | /* Reset is NOT asserted (Use to deassert reset) */ | |
139 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, | |
140 | ||
141 | /* Use #PERST to reset PCI-E device */ | |
142 | pcie_warm_reset = (__force pcie_reset_state_t) 2, | |
143 | ||
144 | /* Use PCI-E Hot Reset to reset device */ | |
145 | pcie_hot_reset = (__force pcie_reset_state_t) 3 | |
146 | }; | |
147 | ||
ba698ad4 DM |
148 | typedef unsigned short __bitwise pci_dev_flags_t; |
149 | enum pci_dev_flags { | |
150 | /* INTX_DISABLE in PCI_COMMAND register disables MSI | |
151 | * generation too. | |
152 | */ | |
153 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, | |
979b1791 AC |
154 | /* Device configuration is irrevocably lost if disabled into D3 */ |
155 | PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, | |
6777829c GR |
156 | /* Provide indication device is assigned by a Virtual Machine Manager */ |
157 | PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, | |
ba698ad4 DM |
158 | }; |
159 | ||
e1d3a908 SA |
160 | enum pci_irq_reroute_variant { |
161 | INTEL_IRQ_REROUTE_VARIANT = 1, | |
162 | MAX_IRQ_REROUTE_VARIANTS = 3 | |
163 | }; | |
164 | ||
6e325a62 MT |
165 | typedef unsigned short __bitwise pci_bus_flags_t; |
166 | enum pci_bus_flags { | |
d556ad4b PO |
167 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
168 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, | |
6e325a62 MT |
169 | }; |
170 | ||
536c8cb4 MW |
171 | /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
172 | enum pci_bus_speed { | |
173 | PCI_SPEED_33MHz = 0x00, | |
174 | PCI_SPEED_66MHz = 0x01, | |
175 | PCI_SPEED_66MHz_PCIX = 0x02, | |
176 | PCI_SPEED_100MHz_PCIX = 0x03, | |
177 | PCI_SPEED_133MHz_PCIX = 0x04, | |
178 | PCI_SPEED_66MHz_PCIX_ECC = 0x05, | |
179 | PCI_SPEED_100MHz_PCIX_ECC = 0x06, | |
180 | PCI_SPEED_133MHz_PCIX_ECC = 0x07, | |
181 | PCI_SPEED_66MHz_PCIX_266 = 0x09, | |
182 | PCI_SPEED_100MHz_PCIX_266 = 0x0a, | |
183 | PCI_SPEED_133MHz_PCIX_266 = 0x0b, | |
45b4cdd5 MW |
184 | AGP_UNKNOWN = 0x0c, |
185 | AGP_1X = 0x0d, | |
186 | AGP_2X = 0x0e, | |
187 | AGP_4X = 0x0f, | |
188 | AGP_8X = 0x10, | |
536c8cb4 MW |
189 | PCI_SPEED_66MHz_PCIX_533 = 0x11, |
190 | PCI_SPEED_100MHz_PCIX_533 = 0x12, | |
191 | PCI_SPEED_133MHz_PCIX_533 = 0x13, | |
192 | PCIE_SPEED_2_5GT = 0x14, | |
193 | PCIE_SPEED_5_0GT = 0x15, | |
9dfd97fe | 194 | PCIE_SPEED_8_0GT = 0x16, |
536c8cb4 MW |
195 | PCI_SPEED_UNKNOWN = 0xff, |
196 | }; | |
197 | ||
24a4742f | 198 | struct pci_cap_saved_data { |
41017f0c | 199 | char cap_nr; |
24a4742f | 200 | unsigned int size; |
41017f0c SL |
201 | u32 data[0]; |
202 | }; | |
203 | ||
24a4742f AW |
204 | struct pci_cap_saved_state { |
205 | struct hlist_node next; | |
206 | struct pci_cap_saved_data cap; | |
207 | }; | |
208 | ||
7d715a6c | 209 | struct pcie_link_state; |
ee69439c | 210 | struct pci_vpd; |
d1b054da | 211 | struct pci_sriov; |
302b4215 | 212 | struct pci_ats; |
ee69439c | 213 | |
1da177e4 LT |
214 | /* |
215 | * The pci_dev structure is used to describe PCI devices. | |
216 | */ | |
217 | struct pci_dev { | |
1da177e4 LT |
218 | struct list_head bus_list; /* node in per-bus list */ |
219 | struct pci_bus *bus; /* bus this device is on */ | |
220 | struct pci_bus *subordinate; /* bus this device bridges to */ | |
221 | ||
222 | void *sysdata; /* hook for sys-specific extension */ | |
223 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ | |
f46753c5 | 224 | struct pci_slot *slot; /* Physical slot this device is in */ |
1da177e4 LT |
225 | |
226 | unsigned int devfn; /* encoded device & function index */ | |
227 | unsigned short vendor; | |
228 | unsigned short device; | |
229 | unsigned short subsystem_vendor; | |
230 | unsigned short subsystem_device; | |
231 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ | |
b8a3a521 | 232 | u8 revision; /* PCI revision, low byte of class word */ |
1da177e4 | 233 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
0efea000 | 234 | u8 pcie_cap; /* PCI-E capability offset */ |
b03e7495 | 235 | u8 pcie_mpss:3; /* PCI-E Max Payload Size Supported */ |
1da177e4 | 236 | u8 rom_base_reg; /* which config register controls the ROM */ |
ffeff788 | 237 | u8 pin; /* which interrupt pin this device uses */ |
786e2288 | 238 | u16 pcie_flags_reg; /* cached PCI-E Capabilities Register */ |
1da177e4 LT |
239 | |
240 | struct pci_driver *driver; /* which driver has allocated this device */ | |
241 | u64 dma_mask; /* Mask of the bits of bus address this | |
242 | device implements. Normally this is | |
243 | 0xffffffff. You only need to change | |
244 | this if your device has broken DMA | |
245 | or supports 64-bit transfers. */ | |
246 | ||
4d57cdfa FT |
247 | struct device_dma_parameters dma_parms; |
248 | ||
1da177e4 LT |
249 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
250 | this is D0-D3, D0 being fully functional, | |
251 | and D3 being off. */ | |
337001b6 RW |
252 | int pm_cap; /* PM capability offset in the |
253 | configuration space */ | |
254 | unsigned int pme_support:5; /* Bitmask of states from which PME# | |
255 | can be generated */ | |
c7f48656 | 256 | unsigned int pme_interrupt:1; |
379021d5 | 257 | unsigned int pme_poll:1; /* Poll device's PME status bit */ |
337001b6 RW |
258 | unsigned int d1_support:1; /* Low power state D1 is supported */ |
259 | unsigned int d2_support:1; /* Low power state D2 is supported */ | |
448bd857 HY |
260 | unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
261 | unsigned int no_d3cold:1; /* D3cold is forbidden */ | |
262 | unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ | |
253d2e54 JP |
263 | unsigned int mmio_always_on:1; /* disallow turning off io/mem |
264 | decoding during bar sizing */ | |
e80bb09d | 265 | unsigned int wakeup_prepared:1; |
448bd857 HY |
266 | unsigned int runtime_d3cold:1; /* whether go through runtime |
267 | D3cold, not set for devices | |
268 | powered on/off by the | |
269 | corresponding bridge */ | |
1ae861e6 | 270 | unsigned int d3_delay; /* D3->D0 transition time in ms */ |
448bd857 | 271 | unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
1da177e4 | 272 | |
7d715a6c SL |
273 | #ifdef CONFIG_PCIEASPM |
274 | struct pcie_link_state *link_state; /* ASPM link state. */ | |
275 | #endif | |
276 | ||
392a1ce7 | 277 | pci_channel_state_t error_state; /* current connectivity state */ |
1da177e4 LT |
278 | struct device dev; /* Generic device interface */ |
279 | ||
1da177e4 LT |
280 | int cfg_size; /* Size of configuration space */ |
281 | ||
282 | /* | |
283 | * Instead of touching interrupt line and base address registers | |
284 | * directly, use the values stored here. They might be different! | |
285 | */ | |
286 | unsigned int irq; | |
287 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ | |
288 | ||
58d9a38f | 289 | bool match_driver; /* Skip attaching driver */ |
1da177e4 LT |
290 | /* These fields are used by common fixups */ |
291 | unsigned int transparent:1; /* Transparent PCI bridge */ | |
292 | unsigned int multifunction:1;/* Part of multi-function device */ | |
293 | /* keep track of device state */ | |
8a1bc901 | 294 | unsigned int is_added:1; |
1da177e4 | 295 | unsigned int is_busmaster:1; /* device is busmaster */ |
4602b88d | 296 | unsigned int no_msi:1; /* device may not use msi */ |
fb51ccbf | 297 | unsigned int block_cfg_access:1; /* config space access is blocked */ |
bd8481e1 | 298 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
e1d3a908 | 299 | unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ |
99dc804d SL |
300 | unsigned int msi_enabled:1; |
301 | unsigned int msix_enabled:1; | |
58c3a727 | 302 | unsigned int ari_enabled:1; /* ARI forwarding */ |
9ac7849e | 303 | unsigned int is_managed:1; |
6d3be84a KK |
304 | unsigned int is_pcie:1; /* Obsolete. Will be removed. |
305 | Use pci_is_pcie() instead */ | |
260d703a | 306 | unsigned int needs_freset:1; /* Dev requires fundamental reset */ |
aa8c6c93 | 307 | unsigned int state_saved:1; |
d1b054da | 308 | unsigned int is_physfn:1; |
dd7cc44d | 309 | unsigned int is_virtfn:1; |
711d5779 | 310 | unsigned int reset_fn:1; |
28760489 | 311 | unsigned int is_hotplug_bridge:1; |
affb72c3 HY |
312 | unsigned int __aer_firmware_first_valid:1; |
313 | unsigned int __aer_firmware_first:1; | |
fbebb9fd | 314 | unsigned int broken_intx_masking:1; |
2b28ae19 | 315 | unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */ |
ba698ad4 | 316 | pci_dev_flags_t dev_flags; |
bae94d02 | 317 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
4602b88d | 318 | |
1da177e4 | 319 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
41017f0c | 320 | struct hlist_head saved_cap_space; |
1da177e4 LT |
321 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
322 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ | |
323 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ | |
45aec1ae | 324 | struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
ded86d8d | 325 | #ifdef CONFIG_PCI_MSI |
4aa9bc95 | 326 | struct list_head msi_list; |
da8d1c8b | 327 | struct kset *msi_kset; |
ded86d8d | 328 | #endif |
94e61088 | 329 | struct pci_vpd *vpd; |
466b3ddf | 330 | #ifdef CONFIG_PCI_ATS |
dd7cc44d YZ |
331 | union { |
332 | struct pci_sriov *sriov; /* SR-IOV capability related */ | |
333 | struct pci_dev *physfn; /* the PF this VF is associated with */ | |
334 | }; | |
302b4215 | 335 | struct pci_ats *ats; /* Address Translation Service */ |
d1b054da | 336 | #endif |
dbd3fc33 | 337 | phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ |
84c1b80e | 338 | size_t romlen; /* Length of ROM if it's not from the BAR */ |
1da177e4 LT |
339 | }; |
340 | ||
dda56549 Y |
341 | static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
342 | { | |
343 | #ifdef CONFIG_PCI_IOV | |
344 | if (dev->is_virtfn) | |
345 | dev = dev->physfn; | |
346 | #endif | |
347 | ||
348 | return dev; | |
349 | } | |
350 | ||
65891215 ME |
351 | extern struct pci_dev *alloc_pci_dev(void); |
352 | ||
1da177e4 LT |
353 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
354 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) | |
355 | ||
a7369f1f LV |
356 | static inline int pci_channel_offline(struct pci_dev *pdev) |
357 | { | |
358 | return (pdev->error_state != pci_channel_io_normal); | |
359 | } | |
360 | ||
67cdc827 YL |
361 | extern struct resource busn_resource; |
362 | ||
0efd5aab BH |
363 | struct pci_host_bridge_window { |
364 | struct list_head list; | |
365 | struct resource *res; /* host bridge aperture (CPU address) */ | |
366 | resource_size_t offset; /* bus address + offset = CPU address */ | |
367 | }; | |
41017f0c | 368 | |
5a21d70d | 369 | struct pci_host_bridge { |
7b543663 | 370 | struct device dev; |
5a21d70d | 371 | struct pci_bus *bus; /* root bus */ |
0efd5aab | 372 | struct list_head windows; /* pci_host_bridge_windows */ |
4fa2649a YL |
373 | void (*release_fn)(struct pci_host_bridge *); |
374 | void *release_data; | |
5a21d70d | 375 | }; |
41017f0c | 376 | |
7b543663 | 377 | #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
4fa2649a YL |
378 | void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
379 | void (*release_fn)(struct pci_host_bridge *), | |
380 | void *release_data); | |
7b543663 | 381 | |
6c0cc950 RW |
382 | int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
383 | ||
2fe2abf8 BH |
384 | /* |
385 | * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond | |
386 | * to P2P or CardBus bridge windows) go in a table. Additional ones (for | |
387 | * buses below host bridges or subtractive decode bridges) go in the list. | |
388 | * Use pci_bus_for_each_resource() to iterate through all the resources. | |
389 | */ | |
390 | ||
391 | /* | |
392 | * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly | |
393 | * and there's no way to program the bridge with the details of the window. | |
394 | * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- | |
395 | * decode bit set, because they are explicit and can be programmed with _SRS. | |
396 | */ | |
397 | #define PCI_SUBTRACTIVE_DECODE 0x1 | |
398 | ||
399 | struct pci_bus_resource { | |
400 | struct list_head list; | |
401 | struct resource *res; | |
402 | unsigned int flags; | |
403 | }; | |
4352dfd5 GKH |
404 | |
405 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ | |
1da177e4 LT |
406 | |
407 | struct pci_bus { | |
408 | struct list_head node; /* node in list of buses */ | |
409 | struct pci_bus *parent; /* parent bus this bridge is on */ | |
410 | struct list_head children; /* list of child buses */ | |
411 | struct list_head devices; /* list of devices on this bus */ | |
412 | struct pci_dev *self; /* bridge device as seen by parent */ | |
f46753c5 | 413 | struct list_head slots; /* list of slots on this bus */ |
2fe2abf8 BH |
414 | struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
415 | struct list_head resources; /* address space routed to this bus */ | |
92f02430 | 416 | struct resource busn_res; /* bus numbers routed to this bus */ |
1da177e4 LT |
417 | |
418 | struct pci_ops *ops; /* configuration access functions */ | |
419 | void *sysdata; /* hook for sys-specific extension */ | |
420 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ | |
421 | ||
422 | unsigned char number; /* bus number */ | |
423 | unsigned char primary; /* number of primary bridge */ | |
3749c51a MW |
424 | unsigned char max_bus_speed; /* enum pci_bus_speed */ |
425 | unsigned char cur_bus_speed; /* enum pci_bus_speed */ | |
1da177e4 LT |
426 | |
427 | char name[48]; | |
428 | ||
429 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ | |
6e325a62 | 430 | pci_bus_flags_t bus_flags; /* Inherited by child busses */ |
1da177e4 | 431 | struct device *bridge; |
fd7d1ced | 432 | struct device dev; |
1da177e4 LT |
433 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
434 | struct bin_attribute *legacy_mem; /* legacy mem */ | |
cc74d96f | 435 | unsigned int is_added:1; |
1da177e4 LT |
436 | }; |
437 | ||
438 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) | |
fd7d1ced | 439 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
1da177e4 | 440 | |
79af72d7 KK |
441 | /* |
442 | * Returns true if the pci bus is root (behind host-pci bridge), | |
443 | * false otherwise | |
444 | */ | |
445 | static inline bool pci_is_root_bus(struct pci_bus *pbus) | |
446 | { | |
447 | return !(pbus->parent); | |
448 | } | |
449 | ||
16cf0ebc RW |
450 | #ifdef CONFIG_PCI_MSI |
451 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) | |
452 | { | |
453 | return pci_dev->msi_enabled || pci_dev->msix_enabled; | |
454 | } | |
455 | #else | |
456 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } | |
457 | #endif | |
458 | ||
1da177e4 LT |
459 | /* |
460 | * Error values that may be returned by PCI functions. | |
461 | */ | |
462 | #define PCIBIOS_SUCCESSFUL 0x00 | |
463 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 | |
464 | #define PCIBIOS_BAD_VENDOR_ID 0x83 | |
465 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 | |
466 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 | |
467 | #define PCIBIOS_SET_FAILED 0x88 | |
468 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 | |
469 | ||
a6961651 AW |
470 | /* |
471 | * Translate above to generic errno for passing back through non-pci. | |
472 | */ | |
473 | static inline int pcibios_err_to_errno(int err) | |
474 | { | |
475 | if (err <= PCIBIOS_SUCCESSFUL) | |
476 | return err; /* Assume already errno */ | |
477 | ||
478 | switch (err) { | |
479 | case PCIBIOS_FUNC_NOT_SUPPORTED: | |
480 | return -ENOENT; | |
481 | case PCIBIOS_BAD_VENDOR_ID: | |
482 | return -EINVAL; | |
483 | case PCIBIOS_DEVICE_NOT_FOUND: | |
484 | return -ENODEV; | |
485 | case PCIBIOS_BAD_REGISTER_NUMBER: | |
486 | return -EFAULT; | |
487 | case PCIBIOS_SET_FAILED: | |
488 | return -EIO; | |
489 | case PCIBIOS_BUFFER_TOO_SMALL: | |
490 | return -ENOSPC; | |
491 | } | |
492 | ||
493 | return -ENOTTY; | |
494 | } | |
495 | ||
1da177e4 LT |
496 | /* Low-level architecture-dependent routines */ |
497 | ||
498 | struct pci_ops { | |
499 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); | |
500 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); | |
501 | }; | |
502 | ||
b6ce068a MW |
503 | /* |
504 | * ACPI needs to be able to access PCI config space before we've done a | |
505 | * PCI bus scan and created pci_bus structures. | |
506 | */ | |
507 | extern int raw_pci_read(unsigned int domain, unsigned int bus, | |
508 | unsigned int devfn, int reg, int len, u32 *val); | |
509 | extern int raw_pci_write(unsigned int domain, unsigned int bus, | |
510 | unsigned int devfn, int reg, int len, u32 val); | |
1da177e4 LT |
511 | |
512 | struct pci_bus_region { | |
c40a22e0 BH |
513 | resource_size_t start; |
514 | resource_size_t end; | |
1da177e4 LT |
515 | }; |
516 | ||
517 | struct pci_dynids { | |
518 | spinlock_t lock; /* protects list, index */ | |
519 | struct list_head list; /* for IDs added at runtime */ | |
1da177e4 LT |
520 | }; |
521 | ||
392a1ce7 | 522 | /* ---------------------------------------------------------------- */ |
523 | /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides | |
579082df | 524 | * a set of callbacks in struct pci_error_handlers, then that device driver |
392a1ce7 | 525 | * will be notified of PCI bus errors, and will be driven to recovery |
526 | * when an error occurs. | |
527 | */ | |
528 | ||
529 | typedef unsigned int __bitwise pci_ers_result_t; | |
530 | ||
531 | enum pci_ers_result { | |
532 | /* no result/none/not supported in device driver */ | |
533 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, | |
534 | ||
535 | /* Device driver can recover without slot reset */ | |
536 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, | |
537 | ||
538 | /* Device driver wants slot to be reset. */ | |
539 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, | |
540 | ||
541 | /* Device has completely failed, is unrecoverable */ | |
542 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, | |
543 | ||
544 | /* Device driver is fully recovered and operational */ | |
545 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, | |
918b4053 VMP |
546 | |
547 | /* No AER capabilities registered for the driver */ | |
548 | PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, | |
392a1ce7 | 549 | }; |
550 | ||
551 | /* PCI bus error event callbacks */ | |
05cca6e5 | 552 | struct pci_error_handlers { |
392a1ce7 | 553 | /* PCI bus error detected on this device */ |
554 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, | |
05cca6e5 | 555 | enum pci_channel_state error); |
392a1ce7 | 556 | |
557 | /* MMIO has been re-enabled, but not DMA */ | |
558 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); | |
559 | ||
560 | /* PCI Express link has been reset */ | |
561 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); | |
562 | ||
563 | /* PCI slot has been reset */ | |
564 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); | |
565 | ||
566 | /* Device driver may resume normal operations */ | |
567 | void (*resume)(struct pci_dev *dev); | |
568 | }; | |
569 | ||
570 | /* ---------------------------------------------------------------- */ | |
571 | ||
1da177e4 LT |
572 | struct module; |
573 | struct pci_driver { | |
574 | struct list_head node; | |
42b21932 | 575 | const char *name; |
1da177e4 LT |
576 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
577 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ | |
578 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
579 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ | |
cbd69dbb LT |
580 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
581 | int (*resume_early) (struct pci_dev *dev); | |
1da177e4 | 582 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
c8958177 | 583 | void (*shutdown) (struct pci_dev *dev); |
1789382a | 584 | int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ |
49453028 | 585 | const struct pci_error_handlers *err_handler; |
1da177e4 LT |
586 | struct device_driver driver; |
587 | struct pci_dynids dynids; | |
588 | }; | |
589 | ||
05cca6e5 | 590 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
1da177e4 | 591 | |
90a1ba0c | 592 | /** |
9f9351bb | 593 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
90a1ba0c JB |
594 | * @_table: device table name |
595 | * | |
596 | * This macro is used to create a struct pci_device_id array (a device table) | |
597 | * in a generic manner. | |
598 | */ | |
9f9351bb | 599 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
15856ad5 | 600 | const struct pci_device_id _table[] |
90a1ba0c | 601 | |
1da177e4 LT |
602 | /** |
603 | * PCI_DEVICE - macro used to describe a specific pci device | |
604 | * @vend: the 16 bit PCI Vendor ID | |
605 | * @dev: the 16 bit PCI Device ID | |
606 | * | |
607 | * This macro is used to create a struct pci_device_id that matches a | |
608 | * specific device. The subvendor and subdevice fields will be set to | |
609 | * PCI_ANY_ID. | |
610 | */ | |
611 | #define PCI_DEVICE(vend,dev) \ | |
612 | .vendor = (vend), .device = (dev), \ | |
613 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
614 | ||
3d567e0e NNS |
615 | /** |
616 | * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem | |
617 | * @vend: the 16 bit PCI Vendor ID | |
618 | * @dev: the 16 bit PCI Device ID | |
619 | * @subvend: the 16 bit PCI Subvendor ID | |
620 | * @subdev: the 16 bit PCI Subdevice ID | |
621 | * | |
622 | * This macro is used to create a struct pci_device_id that matches a | |
623 | * specific device with subsystem information. | |
624 | */ | |
625 | #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ | |
626 | .vendor = (vend), .device = (dev), \ | |
627 | .subvendor = (subvend), .subdevice = (subdev) | |
628 | ||
1da177e4 LT |
629 | /** |
630 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class | |
631 | * @dev_class: the class, subclass, prog-if triple for this device | |
632 | * @dev_class_mask: the class mask for this device | |
633 | * | |
634 | * This macro is used to create a struct pci_device_id that matches a | |
4352dfd5 | 635 | * specific PCI class. The vendor, device, subvendor, and subdevice |
1da177e4 LT |
636 | * fields will be set to PCI_ANY_ID. |
637 | */ | |
638 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ | |
639 | .class = (dev_class), .class_mask = (dev_class_mask), \ | |
640 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ | |
641 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
642 | ||
1597cacb AC |
643 | /** |
644 | * PCI_VDEVICE - macro used to describe a specific pci device in short form | |
c322b28a ZY |
645 | * @vendor: the vendor name |
646 | * @device: the 16 bit PCI Device ID | |
1597cacb AC |
647 | * |
648 | * This macro is used to create a struct pci_device_id that matches a | |
649 | * specific PCI device. The subvendor, and subdevice fields will be set | |
650 | * to PCI_ANY_ID. The macro allows the next field to follow as the device | |
651 | * private data. | |
652 | */ | |
653 | ||
654 | #define PCI_VDEVICE(vendor, device) \ | |
655 | PCI_VENDOR_ID_##vendor, (device), \ | |
656 | PCI_ANY_ID, PCI_ANY_ID, 0, 0 | |
657 | ||
1da177e4 LT |
658 | /* these external functions are only available when PCI support is enabled */ |
659 | #ifdef CONFIG_PCI | |
660 | ||
b03e7495 JM |
661 | extern void pcie_bus_configure_settings(struct pci_bus *bus, u8 smpss); |
662 | ||
663 | enum pcie_bus_config_types { | |
5f39e670 | 664 | PCIE_BUS_TUNE_OFF, |
b03e7495 | 665 | PCIE_BUS_SAFE, |
5f39e670 | 666 | PCIE_BUS_PERFORMANCE, |
b03e7495 JM |
667 | PCIE_BUS_PEER2PEER, |
668 | }; | |
669 | ||
670 | extern enum pcie_bus_config_types pcie_bus_config; | |
671 | ||
1da177e4 LT |
672 | extern struct bus_type pci_bus_type; |
673 | ||
674 | /* Do NOT directly access these two variables, unless you are arch specific pci | |
675 | * code, or pci core code. */ | |
676 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ | |
ed4aaadb ZY |
677 | /* Some device drivers need know if pci is initiated */ |
678 | extern int no_pci_devices(void); | |
1da177e4 | 679 | |
3c449ed0 | 680 | void pcibios_resource_survey_bus(struct pci_bus *bus); |
1da177e4 | 681 | void pcibios_fixup_bus(struct pci_bus *); |
4a7fb636 | 682 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
2b6f2c35 | 683 | /* Architecture specific versions may override this (weak) */ |
05cca6e5 | 684 | char *pcibios_setup(char *str); |
1da177e4 LT |
685 | |
686 | /* Used only when drivers/pci/setup.c is used */ | |
3b7a17fc | 687 | resource_size_t pcibios_align_resource(void *, const struct resource *, |
b26b2d49 | 688 | resource_size_t, |
e31dd6e4 | 689 | resource_size_t); |
1da177e4 LT |
690 | void pcibios_update_irq(struct pci_dev *, int irq); |
691 | ||
2d1c8618 BH |
692 | /* Weak but can be overriden by arch */ |
693 | void pci_fixup_cardbus(struct pci_bus *); | |
694 | ||
1da177e4 LT |
695 | /* Generic PCI functions used internally */ |
696 | ||
36a66cd6 BH |
697 | void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, |
698 | struct resource *res); | |
699 | void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, | |
700 | struct pci_bus_region *region); | |
d1fd4fb6 | 701 | void pcibios_scan_specific_bus(int busn); |
1da177e4 | 702 | extern struct pci_bus *pci_find_bus(int domain, int busnr); |
c48f1670 | 703 | void pci_bus_add_devices(const struct pci_bus *bus); |
05cca6e5 GKH |
704 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, |
705 | struct pci_ops *ops, void *sysdata); | |
de4b2f76 | 706 | struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
166c6370 BH |
707 | struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
708 | struct pci_ops *ops, void *sysdata, | |
709 | struct list_head *resources); | |
98a35831 YL |
710 | int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
711 | int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); | |
712 | void pci_bus_release_busn_res(struct pci_bus *b); | |
15856ad5 | 713 | struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
a2ebb827 BH |
714 | struct pci_ops *ops, void *sysdata, |
715 | struct list_head *resources); | |
05cca6e5 GKH |
716 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
717 | int busnr); | |
3749c51a | 718 | void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
f46753c5 | 719 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
828f3768 AC |
720 | const char *name, |
721 | struct hotplug_slot *hotplug); | |
f46753c5 | 722 | void pci_destroy_slot(struct pci_slot *slot); |
d25b7c8d | 723 | void pci_renumber_slot(struct pci_slot *slot, int slot_nr); |
1da177e4 | 724 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
05cca6e5 | 725 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
cdb9b9f7 | 726 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
1da177e4 | 727 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
b19441af | 728 | int __must_check pci_bus_add_device(struct pci_dev *dev); |
1da177e4 | 729 | void pci_read_bridge_bases(struct pci_bus *child); |
05cca6e5 GKH |
730 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
731 | struct resource *res); | |
3df425f3 | 732 | u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
1da177e4 | 733 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
68feac87 | 734 | u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
1da177e4 LT |
735 | extern struct pci_dev *pci_dev_get(struct pci_dev *dev); |
736 | extern void pci_dev_put(struct pci_dev *dev); | |
737 | extern void pci_remove_bus(struct pci_bus *b); | |
210647af | 738 | extern void pci_stop_and_remove_bus_device(struct pci_dev *dev); |
cdfcc572 YL |
739 | void pci_stop_root_bus(struct pci_bus *bus); |
740 | void pci_remove_root_bus(struct pci_bus *bus); | |
b3743fa4 | 741 | void pci_setup_cardbus(struct pci_bus *bus); |
6b4b78fe | 742 | extern void pci_sort_breadthfirst(void); |
fb8a0d9d WM |
743 | #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
744 | #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) | |
745 | #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0)) | |
1da177e4 LT |
746 | |
747 | /* Generic PCI functions exported to card drivers */ | |
748 | ||
388c8c16 JB |
749 | enum pci_lost_interrupt_reason { |
750 | PCI_LOST_IRQ_NO_INFORMATION = 0, | |
751 | PCI_LOST_IRQ_DISABLE_MSI, | |
752 | PCI_LOST_IRQ_DISABLE_MSIX, | |
753 | PCI_LOST_IRQ_DISABLE_ACPI, | |
754 | }; | |
755 | enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); | |
05cca6e5 GKH |
756 | int pci_find_capability(struct pci_dev *dev, int cap); |
757 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); | |
758 | int pci_find_ext_capability(struct pci_dev *dev, int cap); | |
44a9a36f | 759 | int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
05cca6e5 GKH |
760 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
761 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); | |
29f3eb64 | 762 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
1da177e4 | 763 | |
d42552c3 AM |
764 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
765 | struct pci_dev *from); | |
05cca6e5 | 766 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
1da177e4 | 767 | unsigned int ss_vendor, unsigned int ss_device, |
b08508c4 | 768 | struct pci_dev *from); |
05cca6e5 | 769 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
3c299dc2 AP |
770 | struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
771 | unsigned int devfn); | |
772 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, | |
773 | unsigned int devfn) | |
774 | { | |
775 | return pci_get_domain_bus_and_slot(0, bus, devfn); | |
776 | } | |
05cca6e5 | 777 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
1da177e4 LT |
778 | int pci_dev_present(const struct pci_device_id *ids); |
779 | ||
05cca6e5 GKH |
780 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
781 | int where, u8 *val); | |
782 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, | |
783 | int where, u16 *val); | |
784 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, | |
785 | int where, u32 *val); | |
786 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, | |
787 | int where, u8 val); | |
788 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, | |
789 | int where, u16 val); | |
790 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, | |
791 | int where, u32 val); | |
a72b46c3 | 792 | struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
1da177e4 | 793 | |
bf362f75 | 794 | static inline int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val) |
1da177e4 | 795 | { |
05cca6e5 | 796 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 797 | } |
bf362f75 | 798 | static inline int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val) |
1da177e4 | 799 | { |
05cca6e5 | 800 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 801 | } |
bf362f75 | 802 | static inline int pci_read_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 803 | u32 *val) |
1da177e4 | 804 | { |
05cca6e5 | 805 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 | 806 | } |
bf362f75 | 807 | static inline int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val) |
1da177e4 | 808 | { |
05cca6e5 | 809 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 810 | } |
bf362f75 | 811 | static inline int pci_write_config_word(const struct pci_dev *dev, int where, u16 val) |
1da177e4 | 812 | { |
05cca6e5 | 813 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 814 | } |
bf362f75 | 815 | static inline int pci_write_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 816 | u32 val) |
1da177e4 | 817 | { |
05cca6e5 | 818 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
819 | } |
820 | ||
8c0d3a02 JL |
821 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
822 | int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); | |
823 | int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); | |
824 | int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); | |
825 | int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, | |
826 | u16 clear, u16 set); | |
827 | int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, | |
828 | u32 clear, u32 set); | |
829 | ||
830 | static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, | |
831 | u16 set) | |
832 | { | |
833 | return pcie_capability_clear_and_set_word(dev, pos, 0, set); | |
834 | } | |
835 | ||
836 | static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, | |
837 | u32 set) | |
838 | { | |
839 | return pcie_capability_clear_and_set_dword(dev, pos, 0, set); | |
840 | } | |
841 | ||
842 | static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, | |
843 | u16 clear) | |
844 | { | |
845 | return pcie_capability_clear_and_set_word(dev, pos, clear, 0); | |
846 | } | |
847 | ||
848 | static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, | |
849 | u32 clear) | |
850 | { | |
851 | return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); | |
852 | } | |
853 | ||
c63587d7 AW |
854 | /* user-space driven config access */ |
855 | int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); | |
856 | int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); | |
857 | int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); | |
858 | int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); | |
859 | int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); | |
860 | int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); | |
861 | ||
4a7fb636 | 862 | int __must_check pci_enable_device(struct pci_dev *dev); |
b718989d BH |
863 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
864 | int __must_check pci_enable_device_mem(struct pci_dev *dev); | |
0b62e13b | 865 | int __must_check pci_reenable_device(struct pci_dev *); |
9ac7849e TH |
866 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
867 | void pcim_pin_device(struct pci_dev *pdev); | |
868 | ||
296ccb08 YS |
869 | static inline int pci_is_enabled(struct pci_dev *pdev) |
870 | { | |
871 | return (atomic_read(&pdev->enable_cnt) > 0); | |
872 | } | |
873 | ||
9ac7849e TH |
874 | static inline int pci_is_managed(struct pci_dev *pdev) |
875 | { | |
876 | return pdev->is_managed; | |
877 | } | |
878 | ||
1da177e4 | 879 | void pci_disable_device(struct pci_dev *dev); |
96c55900 MS |
880 | |
881 | extern unsigned int pcibios_max_latency; | |
1da177e4 | 882 | void pci_set_master(struct pci_dev *dev); |
6a479079 | 883 | void pci_clear_master(struct pci_dev *dev); |
96c55900 | 884 | |
f7bdd12d | 885 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
15ea76d4 | 886 | int pci_set_cacheline_size(struct pci_dev *dev); |
1da177e4 | 887 | #define HAVE_PCI_SET_MWI |
4a7fb636 | 888 | int __must_check pci_set_mwi(struct pci_dev *dev); |
694625c0 | 889 | int pci_try_set_mwi(struct pci_dev *dev); |
1da177e4 | 890 | void pci_clear_mwi(struct pci_dev *dev); |
a04ce0ff | 891 | void pci_intx(struct pci_dev *dev, int enable); |
a2e27787 JK |
892 | bool pci_intx_mask_supported(struct pci_dev *dev); |
893 | bool pci_check_and_mask_intx(struct pci_dev *dev); | |
894 | bool pci_check_and_unmask_intx(struct pci_dev *dev); | |
f5f2b131 | 895 | void pci_msi_off(struct pci_dev *dev); |
4d57cdfa | 896 | int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); |
59fc67de | 897 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
d556ad4b PO |
898 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
899 | int pcix_get_mmrbc(struct pci_dev *dev); | |
900 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); | |
2637e5b5 | 901 | int pcie_get_readrq(struct pci_dev *dev); |
d556ad4b | 902 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
b03e7495 JM |
903 | int pcie_get_mps(struct pci_dev *dev); |
904 | int pcie_set_mps(struct pci_dev *dev, int mps); | |
8c1c699f | 905 | int __pci_reset_function(struct pci_dev *dev); |
a96d627a | 906 | int __pci_reset_function_locked(struct pci_dev *dev); |
8dd7f803 | 907 | int pci_reset_function(struct pci_dev *dev); |
14add80b | 908 | void pci_update_resource(struct pci_dev *dev, int resno); |
4a7fb636 | 909 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
2bbc6942 | 910 | int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
c87deff7 | 911 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
1da177e4 LT |
912 | |
913 | /* ROM control related routines */ | |
e416de5e AC |
914 | int pci_enable_rom(struct pci_dev *pdev); |
915 | void pci_disable_rom(struct pci_dev *pdev); | |
144a50ea | 916 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 | 917 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
97c44836 | 918 | size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); |
1da177e4 LT |
919 | |
920 | /* Power management related routines */ | |
921 | int pci_save_state(struct pci_dev *dev); | |
1d3c16a8 | 922 | void pci_restore_state(struct pci_dev *dev); |
ffbdd3f7 AW |
923 | struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
924 | int pci_load_saved_state(struct pci_dev *dev, struct pci_saved_state *state); | |
925 | int pci_load_and_free_saved_state(struct pci_dev *dev, | |
926 | struct pci_saved_state **state); | |
0e5dd46b | 927 | int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
9c8550ee LT |
928 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
929 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); | |
e5899e1b | 930 | bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
5a6c9b60 | 931 | void pci_pme_active(struct pci_dev *dev, bool enable); |
6cbf8214 RW |
932 | int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
933 | bool runtime, bool enable); | |
0235c4fc | 934 | int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
e5899e1b | 935 | pci_power_t pci_target_state(struct pci_dev *dev); |
404cc2d8 RW |
936 | int pci_prepare_to_sleep(struct pci_dev *dev); |
937 | int pci_back_from_sleep(struct pci_dev *dev); | |
b67ea761 | 938 | bool pci_dev_run_wake(struct pci_dev *dev); |
bf4d2908 | 939 | bool pci_check_pme_status(struct pci_dev *dev); |
bf4d2908 | 940 | void pci_pme_wakeup_bus(struct pci_bus *bus); |
1da177e4 | 941 | |
6cbf8214 RW |
942 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
943 | bool enable) | |
944 | { | |
945 | return __pci_enable_wake(dev, state, false, enable); | |
946 | } | |
1da177e4 | 947 | |
b48d4425 JB |
948 | #define PCI_EXP_IDO_REQUEST (1<<0) |
949 | #define PCI_EXP_IDO_COMPLETION (1<<1) | |
950 | void pci_enable_ido(struct pci_dev *dev, unsigned long type); | |
951 | void pci_disable_ido(struct pci_dev *dev, unsigned long type); | |
952 | ||
48a92a81 | 953 | enum pci_obff_signal_type { |
688398bb MS |
954 | PCI_EXP_OBFF_SIGNAL_L0 = 0, |
955 | PCI_EXP_OBFF_SIGNAL_ALWAYS = 1, | |
48a92a81 JB |
956 | }; |
957 | int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type); | |
958 | void pci_disable_obff(struct pci_dev *dev); | |
959 | ||
51c2e0a7 JB |
960 | int pci_enable_ltr(struct pci_dev *dev); |
961 | void pci_disable_ltr(struct pci_dev *dev); | |
962 | int pci_set_ltr(struct pci_dev *dev, int snoop_lat_ns, int nosnoop_lat_ns); | |
963 | ||
bb209c82 BH |
964 | /* For use by arch with custom probe code */ |
965 | void set_pcie_port_type(struct pci_dev *pdev); | |
966 | void set_pcie_hotplug_bridge(struct pci_dev *pdev); | |
967 | ||
ce5ccdef | 968 | /* Functions for PCI Hotplug drivers to use */ |
05cca6e5 | 969 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
2f320521 | 970 | unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
3ed4fd96 | 971 | unsigned int pci_rescan_bus(struct pci_bus *bus); |
ce5ccdef | 972 | |
287d19ce SH |
973 | /* Vital product data routines */ |
974 | ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); | |
975 | ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); | |
db567943 | 976 | int pci_vpd_truncate(struct pci_dev *dev, size_t size); |
287d19ce | 977 | |
1da177e4 | 978 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
925845bd | 979 | resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
ea741551 | 980 | void pci_bus_assign_resources(const struct pci_bus *bus); |
1da177e4 LT |
981 | void pci_bus_size_bridges(struct pci_bus *bus); |
982 | int pci_claim_resource(struct pci_dev *, int); | |
983 | void pci_assign_unassigned_resources(void); | |
6841ec68 | 984 | void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
17787940 | 985 | void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
1da177e4 | 986 | void pdev_enable_device(struct pci_dev *); |
842de40d | 987 | int pci_enable_resources(struct pci_dev *, int mask); |
1da177e4 | 988 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
d5341942 | 989 | int (*)(const struct pci_dev *, u8, u8)); |
1da177e4 | 990 | #define HAVE_PCI_REQ_REGIONS 2 |
4a7fb636 | 991 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
e8de1481 | 992 | int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
1da177e4 | 993 | void pci_release_regions(struct pci_dev *); |
4a7fb636 | 994 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
e8de1481 | 995 | int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
1da177e4 | 996 | void pci_release_region(struct pci_dev *, int); |
c87deff7 | 997 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
e8de1481 | 998 | int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
c87deff7 | 999 | void pci_release_selected_regions(struct pci_dev *, int); |
1da177e4 LT |
1000 | |
1001 | /* drivers/pci/bus.c */ | |
45ca9e97 | 1002 | void pci_add_resource(struct list_head *resources, struct resource *res); |
0efd5aab BH |
1003 | void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
1004 | resource_size_t offset); | |
45ca9e97 | 1005 | void pci_free_resource_list(struct list_head *resources); |
2fe2abf8 BH |
1006 | void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); |
1007 | struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); | |
1008 | void pci_bus_remove_resources(struct pci_bus *bus); | |
1009 | ||
89a74ecc | 1010 | #define pci_bus_for_each_resource(bus, res, i) \ |
2fe2abf8 BH |
1011 | for (i = 0; \ |
1012 | (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ | |
1013 | i++) | |
89a74ecc | 1014 | |
4a7fb636 AM |
1015 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
1016 | struct resource *res, resource_size_t size, | |
1017 | resource_size_t align, resource_size_t min, | |
1018 | unsigned int type_mask, | |
3b7a17fc DB |
1019 | resource_size_t (*alignf)(void *, |
1020 | const struct resource *, | |
b26b2d49 DB |
1021 | resource_size_t, |
1022 | resource_size_t), | |
4a7fb636 | 1023 | void *alignf_data); |
1da177e4 LT |
1024 | void pci_enable_bridges(struct pci_bus *bus); |
1025 | ||
863b18f4 | 1026 | /* Proper probing supporting hot-pluggable devices */ |
725522b5 GKH |
1027 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
1028 | const char *mod_name); | |
bba81165 AM |
1029 | |
1030 | /* | |
1031 | * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
1032 | */ | |
1033 | #define pci_register_driver(driver) \ | |
1034 | __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
863b18f4 | 1035 | |
05cca6e5 | 1036 | void pci_unregister_driver(struct pci_driver *dev); |
aad4f400 GKH |
1037 | |
1038 | /** | |
1039 | * module_pci_driver() - Helper macro for registering a PCI driver | |
1040 | * @__pci_driver: pci_driver struct | |
1041 | * | |
1042 | * Helper macro for PCI drivers which do not do anything special in module | |
1043 | * init/exit. This eliminates a lot of boilerplate. Each module may only | |
1044 | * use this macro once, and calling it replaces module_init() and module_exit() | |
1045 | */ | |
1046 | #define module_pci_driver(__pci_driver) \ | |
1047 | module_driver(__pci_driver, pci_register_driver, \ | |
1048 | pci_unregister_driver) | |
1049 | ||
05cca6e5 | 1050 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
9dba910e TH |
1051 | int pci_add_dynid(struct pci_driver *drv, |
1052 | unsigned int vendor, unsigned int device, | |
1053 | unsigned int subvendor, unsigned int subdevice, | |
1054 | unsigned int class, unsigned int class_mask, | |
1055 | unsigned long driver_data); | |
05cca6e5 GKH |
1056 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
1057 | struct pci_dev *dev); | |
1058 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, | |
1059 | int pass); | |
1da177e4 | 1060 | |
70298c6e | 1061 | void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
cecf4864 | 1062 | void *userdata); |
70b9f7dc | 1063 | int pci_cfg_space_size_ext(struct pci_dev *dev); |
ac7dc65a | 1064 | int pci_cfg_space_size(struct pci_dev *dev); |
05cca6e5 | 1065 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
e2444273 | 1066 | void pci_setup_bridge(struct pci_bus *bus); |
ac5ad93e GS |
1067 | resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
1068 | unsigned long type); | |
cecf4864 | 1069 | |
3448a19d DA |
1070 | #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
1071 | #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) | |
1072 | ||
deb2d2ec | 1073 | int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
3448a19d | 1074 | unsigned int command_bits, u32 flags); |
1da177e4 LT |
1075 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
1076 | ||
f41b1771 | 1077 | #include <linux/pci-dma.h> |
1da177e4 LT |
1078 | #include <linux/dmapool.h> |
1079 | ||
1080 | #define pci_pool dma_pool | |
1081 | #define pci_pool_create(name, pdev, size, align, allocation) \ | |
1082 | dma_pool_create(name, &pdev->dev, size, align, allocation) | |
1083 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) | |
1084 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) | |
1085 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) | |
1086 | ||
e24c2d96 DM |
1087 | enum pci_dma_burst_strategy { |
1088 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, | |
1089 | strategy_parameter is N/A */ | |
1090 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter | |
1091 | byte boundaries */ | |
1092 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of | |
1093 | strategy_parameter byte boundaries */ | |
1094 | }; | |
1095 | ||
1da177e4 | 1096 | struct msix_entry { |
16dbef4a | 1097 | u32 vector; /* kernel uses to write allocated vector */ |
1da177e4 LT |
1098 | u16 entry; /* driver uses to specify entry, OS writes */ |
1099 | }; | |
1100 | ||
0366f8f7 | 1101 | |
1da177e4 | 1102 | #ifndef CONFIG_PCI_MSI |
1c8d7b0a | 1103 | static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec) |
05cca6e5 GKH |
1104 | { |
1105 | return -1; | |
1106 | } | |
1107 | ||
08261d87 AG |
1108 | static inline int |
1109 | pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec) | |
1110 | { | |
1111 | return -1; | |
1112 | } | |
1113 | ||
d52877c7 YL |
1114 | static inline void pci_msi_shutdown(struct pci_dev *dev) |
1115 | { } | |
05cca6e5 GKH |
1116 | static inline void pci_disable_msi(struct pci_dev *dev) |
1117 | { } | |
1118 | ||
a52e2e35 RW |
1119 | static inline int pci_msix_table_size(struct pci_dev *dev) |
1120 | { | |
1121 | return 0; | |
1122 | } | |
05cca6e5 GKH |
1123 | static inline int pci_enable_msix(struct pci_dev *dev, |
1124 | struct msix_entry *entries, int nvec) | |
1125 | { | |
1126 | return -1; | |
1127 | } | |
1128 | ||
d52877c7 YL |
1129 | static inline void pci_msix_shutdown(struct pci_dev *dev) |
1130 | { } | |
05cca6e5 GKH |
1131 | static inline void pci_disable_msix(struct pci_dev *dev) |
1132 | { } | |
1133 | ||
1134 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) | |
1135 | { } | |
1136 | ||
1137 | static inline void pci_restore_msi_state(struct pci_dev *dev) | |
1138 | { } | |
07ae95f9 AP |
1139 | static inline int pci_msi_enabled(void) |
1140 | { | |
1141 | return 0; | |
1142 | } | |
1da177e4 | 1143 | #else |
1c8d7b0a | 1144 | extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); |
08261d87 | 1145 | extern int pci_enable_msi_block_auto(struct pci_dev *dev, unsigned int *maxvec); |
d52877c7 | 1146 | extern void pci_msi_shutdown(struct pci_dev *dev); |
1da177e4 | 1147 | extern void pci_disable_msi(struct pci_dev *dev); |
a52e2e35 | 1148 | extern int pci_msix_table_size(struct pci_dev *dev); |
05cca6e5 | 1149 | extern int pci_enable_msix(struct pci_dev *dev, |
1da177e4 | 1150 | struct msix_entry *entries, int nvec); |
d52877c7 | 1151 | extern void pci_msix_shutdown(struct pci_dev *dev); |
1da177e4 LT |
1152 | extern void pci_disable_msix(struct pci_dev *dev); |
1153 | extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); | |
94688cf2 | 1154 | extern void pci_restore_msi_state(struct pci_dev *dev); |
07ae95f9 | 1155 | extern int pci_msi_enabled(void); |
1da177e4 LT |
1156 | #endif |
1157 | ||
ab0724ff | 1158 | #ifdef CONFIG_PCIEPORTBUS |
415e12b2 RW |
1159 | extern bool pcie_ports_disabled; |
1160 | extern bool pcie_ports_auto; | |
ab0724ff MT |
1161 | #else |
1162 | #define pcie_ports_disabled true | |
1163 | #define pcie_ports_auto false | |
1164 | #endif | |
415e12b2 | 1165 | |
3e1b1600 | 1166 | #ifndef CONFIG_PCIEASPM |
8b8bae90 RW |
1167 | static inline int pcie_aspm_enabled(void) { return 0; } |
1168 | static inline bool pcie_aspm_support_enabled(void) { return false; } | |
3e1b1600 AP |
1169 | #else |
1170 | extern int pcie_aspm_enabled(void); | |
8b8bae90 | 1171 | extern bool pcie_aspm_support_enabled(void); |
3e1b1600 AP |
1172 | #endif |
1173 | ||
415e12b2 RW |
1174 | #ifdef CONFIG_PCIEAER |
1175 | void pci_no_aer(void); | |
1176 | bool pci_aer_available(void); | |
1177 | #else | |
1178 | static inline void pci_no_aer(void) { } | |
1179 | static inline bool pci_aer_available(void) { return false; } | |
1180 | #endif | |
1181 | ||
43c16408 AP |
1182 | #ifndef CONFIG_PCIE_ECRC |
1183 | static inline void pcie_set_ecrc_checking(struct pci_dev *dev) | |
1184 | { | |
1185 | return; | |
1186 | } | |
1187 | static inline void pcie_ecrc_get_policy(char *str) {}; | |
1188 | #else | |
1189 | extern void pcie_set_ecrc_checking(struct pci_dev *dev); | |
1190 | extern void pcie_ecrc_get_policy(char *str); | |
1191 | #endif | |
1192 | ||
1c8d7b0a MW |
1193 | #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) |
1194 | ||
8b955b0d | 1195 | #ifdef CONFIG_HT_IRQ |
8b955b0d EB |
1196 | /* The functions a driver should call */ |
1197 | int ht_create_irq(struct pci_dev *dev, int idx); | |
1198 | void ht_destroy_irq(unsigned int irq); | |
8b955b0d EB |
1199 | #endif /* CONFIG_HT_IRQ */ |
1200 | ||
fb51ccbf JK |
1201 | extern void pci_cfg_access_lock(struct pci_dev *dev); |
1202 | extern bool pci_cfg_access_trylock(struct pci_dev *dev); | |
1203 | extern void pci_cfg_access_unlock(struct pci_dev *dev); | |
e04b0ea2 | 1204 | |
4352dfd5 GKH |
1205 | /* |
1206 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), | |
1207 | * a PCI domain is defined to be a set of PCI busses which share | |
1208 | * configuration space. | |
1209 | */ | |
32a2eea7 JG |
1210 | #ifdef CONFIG_PCI_DOMAINS |
1211 | extern int pci_domains_supported; | |
1212 | #else | |
1213 | enum { pci_domains_supported = 0 }; | |
05cca6e5 GKH |
1214 | static inline int pci_domain_nr(struct pci_bus *bus) |
1215 | { | |
1216 | return 0; | |
1217 | } | |
1218 | ||
4352dfd5 GKH |
1219 | static inline int pci_proc_domain(struct pci_bus *bus) |
1220 | { | |
1221 | return 0; | |
1222 | } | |
32a2eea7 | 1223 | #endif /* CONFIG_PCI_DOMAINS */ |
1da177e4 | 1224 | |
95a8b6ef MT |
1225 | /* some architectures require additional setup to direct VGA traffic */ |
1226 | typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, | |
3448a19d | 1227 | unsigned int command_bits, u32 flags); |
95a8b6ef MT |
1228 | extern void pci_register_set_vga_state(arch_set_vga_state_t func); |
1229 | ||
4352dfd5 | 1230 | #else /* CONFIG_PCI is not enabled */ |
1da177e4 LT |
1231 | |
1232 | /* | |
1233 | * If the system does not have PCI, clearly these return errors. Define | |
1234 | * these as simple inline functions to avoid hair in drivers. | |
1235 | */ | |
1236 | ||
05cca6e5 GKH |
1237 | #define _PCI_NOP(o, s, t) \ |
1238 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | |
1239 | int where, t val) \ | |
1da177e4 | 1240 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
05cca6e5 GKH |
1241 | |
1242 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | |
1243 | _PCI_NOP(o, word, u16 x) \ | |
1244 | _PCI_NOP(o, dword, u32 x) | |
1da177e4 LT |
1245 | _PCI_NOP_ALL(read, *) |
1246 | _PCI_NOP_ALL(write,) | |
1247 | ||
d42552c3 | 1248 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
05cca6e5 GKH |
1249 | unsigned int device, |
1250 | struct pci_dev *from) | |
1251 | { | |
1252 | return NULL; | |
1253 | } | |
d42552c3 | 1254 | |
05cca6e5 GKH |
1255 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
1256 | unsigned int device, | |
1257 | unsigned int ss_vendor, | |
1258 | unsigned int ss_device, | |
b08508c4 | 1259 | struct pci_dev *from) |
05cca6e5 GKH |
1260 | { |
1261 | return NULL; | |
1262 | } | |
1da177e4 | 1263 | |
05cca6e5 GKH |
1264 | static inline struct pci_dev *pci_get_class(unsigned int class, |
1265 | struct pci_dev *from) | |
1266 | { | |
1267 | return NULL; | |
1268 | } | |
1da177e4 LT |
1269 | |
1270 | #define pci_dev_present(ids) (0) | |
ed4aaadb | 1271 | #define no_pci_devices() (1) |
1da177e4 LT |
1272 | #define pci_dev_put(dev) do { } while (0) |
1273 | ||
05cca6e5 GKH |
1274 | static inline void pci_set_master(struct pci_dev *dev) |
1275 | { } | |
1276 | ||
1277 | static inline int pci_enable_device(struct pci_dev *dev) | |
1278 | { | |
1279 | return -EIO; | |
1280 | } | |
1281 | ||
1282 | static inline void pci_disable_device(struct pci_dev *dev) | |
1283 | { } | |
1284 | ||
1285 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) | |
1286 | { | |
1287 | return -EIO; | |
1288 | } | |
1289 | ||
80be0385 RD |
1290 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) |
1291 | { | |
1292 | return -EIO; | |
1293 | } | |
1294 | ||
4d57cdfa FT |
1295 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
1296 | unsigned int size) | |
1297 | { | |
1298 | return -EIO; | |
1299 | } | |
1300 | ||
59fc67de FT |
1301 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
1302 | unsigned long mask) | |
1303 | { | |
1304 | return -EIO; | |
1305 | } | |
1306 | ||
05cca6e5 GKH |
1307 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
1308 | { | |
1309 | return -EBUSY; | |
1310 | } | |
1311 | ||
1312 | static inline int __pci_register_driver(struct pci_driver *drv, | |
1313 | struct module *owner) | |
1314 | { | |
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | static inline int pci_register_driver(struct pci_driver *drv) | |
1319 | { | |
1320 | return 0; | |
1321 | } | |
1322 | ||
1323 | static inline void pci_unregister_driver(struct pci_driver *drv) | |
1324 | { } | |
1325 | ||
1326 | static inline int pci_find_capability(struct pci_dev *dev, int cap) | |
1327 | { | |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, | |
1332 | int cap) | |
1333 | { | |
1334 | return 0; | |
1335 | } | |
1336 | ||
1337 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) | |
1338 | { | |
1339 | return 0; | |
1340 | } | |
1341 | ||
1da177e4 | 1342 | /* Power management related routines */ |
05cca6e5 GKH |
1343 | static inline int pci_save_state(struct pci_dev *dev) |
1344 | { | |
1345 | return 0; | |
1346 | } | |
1347 | ||
1d3c16a8 JM |
1348 | static inline void pci_restore_state(struct pci_dev *dev) |
1349 | { } | |
1da177e4 | 1350 | |
05cca6e5 GKH |
1351 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
1352 | { | |
1353 | return 0; | |
1354 | } | |
1355 | ||
3449248c RD |
1356 | static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
1357 | { | |
1358 | return 0; | |
1359 | } | |
1360 | ||
05cca6e5 GKH |
1361 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
1362 | pm_message_t state) | |
1363 | { | |
1364 | return PCI_D0; | |
1365 | } | |
1366 | ||
1367 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, | |
1368 | int enable) | |
1369 | { | |
1370 | return 0; | |
1371 | } | |
1372 | ||
b48d4425 JB |
1373 | static inline void pci_enable_ido(struct pci_dev *dev, unsigned long type) |
1374 | { | |
1375 | } | |
1376 | ||
1377 | static inline void pci_disable_ido(struct pci_dev *dev, unsigned long type) | |
1378 | { | |
1379 | } | |
1380 | ||
48a92a81 JB |
1381 | static inline int pci_enable_obff(struct pci_dev *dev, unsigned long type) |
1382 | { | |
1383 | return 0; | |
1384 | } | |
1385 | ||
1386 | static inline void pci_disable_obff(struct pci_dev *dev) | |
1387 | { | |
1388 | } | |
1389 | ||
05cca6e5 GKH |
1390 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
1391 | { | |
1392 | return -EIO; | |
1393 | } | |
1394 | ||
1395 | static inline void pci_release_regions(struct pci_dev *dev) | |
1396 | { } | |
0da0ead9 | 1397 | |
a46e8126 KG |
1398 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
1399 | ||
fb51ccbf | 1400 | static inline void pci_block_cfg_access(struct pci_dev *dev) |
05cca6e5 GKH |
1401 | { } |
1402 | ||
fb51ccbf JK |
1403 | static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
1404 | { return 0; } | |
1405 | ||
1406 | static inline void pci_unblock_cfg_access(struct pci_dev *dev) | |
05cca6e5 | 1407 | { } |
e04b0ea2 | 1408 | |
d80d0217 RD |
1409 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
1410 | { return NULL; } | |
1411 | ||
1412 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, | |
1413 | unsigned int devfn) | |
1414 | { return NULL; } | |
1415 | ||
1416 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, | |
1417 | unsigned int devfn) | |
1418 | { return NULL; } | |
1419 | ||
92298e66 DA |
1420 | static inline int pci_domain_nr(struct pci_bus *bus) |
1421 | { return 0; } | |
1422 | ||
12ea6cad AW |
1423 | static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) |
1424 | { return NULL; } | |
1425 | ||
fb8a0d9d WM |
1426 | #define dev_is_pci(d) (false) |
1427 | #define dev_is_pf(d) (false) | |
1428 | #define dev_num_vf(d) (0) | |
4352dfd5 | 1429 | #endif /* CONFIG_PCI */ |
1da177e4 | 1430 | |
4352dfd5 GKH |
1431 | /* Include architecture-dependent settings and functions */ |
1432 | ||
1433 | #include <asm/pci.h> | |
1da177e4 | 1434 | |
1f82de10 YL |
1435 | #ifndef PCIBIOS_MAX_MEM_32 |
1436 | #define PCIBIOS_MAX_MEM_32 (-1) | |
1437 | #endif | |
1438 | ||
1da177e4 LT |
1439 | /* these helpers provide future and backwards compatibility |
1440 | * for accessing popular PCI BAR info */ | |
05cca6e5 GKH |
1441 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
1442 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) | |
1443 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) | |
1da177e4 | 1444 | #define pci_resource_len(dev,bar) \ |
05cca6e5 GKH |
1445 | ((pci_resource_start((dev), (bar)) == 0 && \ |
1446 | pci_resource_end((dev), (bar)) == \ | |
1447 | pci_resource_start((dev), (bar))) ? 0 : \ | |
1448 | \ | |
1449 | (pci_resource_end((dev), (bar)) - \ | |
1450 | pci_resource_start((dev), (bar)) + 1)) | |
1da177e4 LT |
1451 | |
1452 | /* Similar to the helpers above, these manipulate per-pci_dev | |
1453 | * driver-specific data. They are really just a wrapper around | |
1454 | * the generic device structure functions of these calls. | |
1455 | */ | |
05cca6e5 | 1456 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
1da177e4 LT |
1457 | { |
1458 | return dev_get_drvdata(&pdev->dev); | |
1459 | } | |
1460 | ||
05cca6e5 | 1461 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
1da177e4 LT |
1462 | { |
1463 | dev_set_drvdata(&pdev->dev, data); | |
1464 | } | |
1465 | ||
1466 | /* If you want to know what to call your pci_dev, ask this function. | |
1467 | * Again, it's a wrapper around the generic device. | |
1468 | */ | |
2fc90f61 | 1469 | static inline const char *pci_name(const struct pci_dev *pdev) |
1da177e4 | 1470 | { |
c6c4f070 | 1471 | return dev_name(&pdev->dev); |
1da177e4 LT |
1472 | } |
1473 | ||
2311b1f2 ME |
1474 | |
1475 | /* Some archs don't want to expose struct resource to userland as-is | |
1476 | * in sysfs and /proc | |
1477 | */ | |
1478 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER | |
1479 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
05cca6e5 | 1480 | const struct resource *rsrc, resource_size_t *start, |
e31dd6e4 | 1481 | resource_size_t *end) |
2311b1f2 ME |
1482 | { |
1483 | *start = rsrc->start; | |
1484 | *end = rsrc->end; | |
1485 | } | |
1486 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ | |
1487 | ||
1488 | ||
1da177e4 LT |
1489 | /* |
1490 | * The world is not perfect and supplies us with broken PCI devices. | |
1491 | * For at least a part of these bugs we need a work-around, so both | |
1492 | * generic (drivers/pci/quirks.c) and per-architecture code can define | |
1493 | * fixup hooks to be called for particular buggy devices. | |
1494 | */ | |
1495 | ||
1496 | struct pci_fixup { | |
f4ca5c6a YL |
1497 | u16 vendor; /* You can use PCI_ANY_ID here of course */ |
1498 | u16 device; /* You can use PCI_ANY_ID here of course */ | |
1499 | u32 class; /* You can use PCI_ANY_ID here too */ | |
1500 | unsigned int class_shift; /* should be 0, 8, 16 */ | |
1da177e4 LT |
1501 | void (*hook)(struct pci_dev *dev); |
1502 | }; | |
1503 | ||
1504 | enum pci_fixup_pass { | |
1505 | pci_fixup_early, /* Before probing BARs */ | |
1506 | pci_fixup_header, /* After reading configuration header */ | |
1507 | pci_fixup_final, /* Final phase of device fixups */ | |
1508 | pci_fixup_enable, /* pci_enable_device() time */ | |
e1a2a51e RW |
1509 | pci_fixup_resume, /* pci_device_resume() */ |
1510 | pci_fixup_suspend, /* pci_device_suspend */ | |
1511 | pci_fixup_resume_early, /* pci_device_resume_early() */ | |
1da177e4 LT |
1512 | }; |
1513 | ||
1514 | /* Anonymous variables would be nice... */ | |
f4ca5c6a YL |
1515 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
1516 | class_shift, hook) \ | |
769ae543 | 1517 | static const struct pci_fixup __pci_fixup_##name __used \ |
f4ca5c6a YL |
1518 | __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
1519 | = { vendor, device, class, class_shift, hook }; | |
1520 | ||
1521 | #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ | |
1522 | class_shift, hook) \ | |
1523 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
1524 | vendor##device##hook, vendor, device, class, class_shift, hook) | |
1525 | #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \ | |
1526 | class_shift, hook) \ | |
1527 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
1528 | vendor##device##hook, vendor, device, class, class_shift, hook) | |
1529 | #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ | |
1530 | class_shift, hook) \ | |
1531 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
1532 | vendor##device##hook, vendor, device, class, class_shift, hook) | |
1533 | #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ | |
1534 | class_shift, hook) \ | |
1535 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
1536 | vendor##device##hook, vendor, device, class, class_shift, hook) | |
1537 | #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ | |
1538 | class_shift, hook) \ | |
1539 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
1540 | resume##vendor##device##hook, vendor, device, class, \ | |
1541 | class_shift, hook) | |
1542 | #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ | |
1543 | class_shift, hook) \ | |
1544 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
1545 | resume_early##vendor##device##hook, vendor, device, \ | |
1546 | class, class_shift, hook) | |
1547 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ | |
1548 | class_shift, hook) \ | |
1549 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
1550 | suspend##vendor##device##hook, vendor, device, class, \ | |
1551 | class_shift, hook) | |
1552 | ||
1da177e4 LT |
1553 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
1554 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
f4ca5c6a | 1555 | vendor##device##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1556 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
1557 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
f4ca5c6a | 1558 | vendor##device##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1559 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
1560 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
f4ca5c6a | 1561 | vendor##device##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1562 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
1563 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
f4ca5c6a | 1564 | vendor##device##hook, vendor, device, PCI_ANY_ID, 0, hook) |
1597cacb AC |
1565 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
1566 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
f4ca5c6a YL |
1567 | resume##vendor##device##hook, vendor, device, \ |
1568 | PCI_ANY_ID, 0, hook) | |
e1a2a51e RW |
1569 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
1570 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
f4ca5c6a YL |
1571 | resume_early##vendor##device##hook, vendor, device, \ |
1572 | PCI_ANY_ID, 0, hook) | |
e1a2a51e RW |
1573 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
1574 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
f4ca5c6a YL |
1575 | suspend##vendor##device##hook, vendor, device, \ |
1576 | PCI_ANY_ID, 0, hook) | |
1da177e4 | 1577 | |
93177a74 | 1578 | #ifdef CONFIG_PCI_QUIRKS |
1da177e4 | 1579 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
12ea6cad | 1580 | struct pci_dev *pci_get_dma_source(struct pci_dev *dev); |
ad805758 | 1581 | int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); |
93177a74 RW |
1582 | #else |
1583 | static inline void pci_fixup_device(enum pci_fixup_pass pass, | |
1584 | struct pci_dev *dev) {} | |
12ea6cad AW |
1585 | static inline struct pci_dev *pci_get_dma_source(struct pci_dev *dev) |
1586 | { | |
1587 | return pci_dev_get(dev); | |
1588 | } | |
ad805758 AW |
1589 | static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, |
1590 | u16 acs_flags) | |
1591 | { | |
1592 | return -ENOTTY; | |
1593 | } | |
93177a74 | 1594 | #endif |
1da177e4 | 1595 | |
05cca6e5 | 1596 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
5ea81769 | 1597 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
05cca6e5 | 1598 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
fb7ebfe4 YL |
1599 | int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
1600 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, | |
916fbfb7 | 1601 | const char *name); |
fb7ebfe4 | 1602 | void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
5ea81769 | 1603 | |
1da177e4 | 1604 | extern int pci_pci_problems; |
236561e5 | 1605 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
1da177e4 LT |
1606 | #define PCIPCI_TRITON 2 |
1607 | #define PCIPCI_NATOMA 4 | |
1608 | #define PCIPCI_VIAETBF 8 | |
1609 | #define PCIPCI_VSFX 16 | |
236561e5 AC |
1610 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
1611 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ | |
1da177e4 | 1612 | |
4516a618 AN |
1613 | extern unsigned long pci_cardbus_io_size; |
1614 | extern unsigned long pci_cardbus_mem_size; | |
15856ad5 | 1615 | extern u8 pci_dfl_cache_line_size; |
ac1aa47b | 1616 | extern u8 pci_cache_line_size; |
4516a618 | 1617 | |
28760489 EB |
1618 | extern unsigned long pci_hotplug_io_size; |
1619 | extern unsigned long pci_hotplug_mem_size; | |
1620 | ||
cfce9fb8 | 1621 | /* Architecture specific versions may override these (weak) */ |
19792a08 AB |
1622 | int pcibios_add_platform_entries(struct pci_dev *dev); |
1623 | void pcibios_disable_device(struct pci_dev *dev); | |
cfce9fb8 | 1624 | void pcibios_set_master(struct pci_dev *dev); |
19792a08 AB |
1625 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
1626 | enum pcie_reset_state state); | |
eca0d467 | 1627 | int pcibios_add_device(struct pci_dev *dev); |
575e3348 | 1628 | |
7752d5cf | 1629 | #ifdef CONFIG_PCI_MMCONFIG |
bb63b421 | 1630 | extern void __init pci_mmcfg_early_init(void); |
7752d5cf RH |
1631 | extern void __init pci_mmcfg_late_init(void); |
1632 | #else | |
bb63b421 | 1633 | static inline void pci_mmcfg_early_init(void) { } |
7752d5cf RH |
1634 | static inline void pci_mmcfg_late_init(void) { } |
1635 | #endif | |
1636 | ||
642c92da | 1637 | int pci_ext_cfg_avail(void); |
0ef5f8f6 | 1638 | |
1684f5dd | 1639 | void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
aa42d7c6 | 1640 | |
dd7cc44d YZ |
1641 | #ifdef CONFIG_PCI_IOV |
1642 | extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); | |
1643 | extern void pci_disable_sriov(struct pci_dev *dev); | |
74bb1bcc | 1644 | extern irqreturn_t pci_sriov_migration(struct pci_dev *dev); |
fb8a0d9d | 1645 | extern int pci_num_vf(struct pci_dev *dev); |
bff73156 DD |
1646 | extern int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
1647 | extern int pci_sriov_get_totalvfs(struct pci_dev *dev); | |
dd7cc44d YZ |
1648 | #else |
1649 | static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) | |
1650 | { | |
1651 | return -ENODEV; | |
1652 | } | |
1653 | static inline void pci_disable_sriov(struct pci_dev *dev) | |
1654 | { | |
1655 | } | |
74bb1bcc YZ |
1656 | static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev) |
1657 | { | |
1658 | return IRQ_NONE; | |
1659 | } | |
fb8a0d9d WM |
1660 | static inline int pci_num_vf(struct pci_dev *dev) |
1661 | { | |
1662 | return 0; | |
1663 | } | |
bff73156 DD |
1664 | static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
1665 | { | |
1666 | return 0; | |
1667 | } | |
1668 | static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) | |
1669 | { | |
1670 | return 0; | |
1671 | } | |
dd7cc44d YZ |
1672 | #endif |
1673 | ||
c825bc94 KK |
1674 | #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
1675 | extern void pci_hp_create_module_link(struct pci_slot *pci_slot); | |
1676 | extern void pci_hp_remove_module_link(struct pci_slot *pci_slot); | |
1677 | #endif | |
1678 | ||
d7b7e605 KK |
1679 | /** |
1680 | * pci_pcie_cap - get the saved PCIe capability offset | |
1681 | * @dev: PCI device | |
1682 | * | |
1683 | * PCIe capability offset is calculated at PCI device initialization | |
1684 | * time and saved in the data structure. This function returns saved | |
1685 | * PCIe capability offset. Using this instead of pci_find_capability() | |
1686 | * reduces unnecessary search in the PCI configuration space. If you | |
1687 | * need to calculate PCIe capability offset from raw device for some | |
1688 | * reasons, please use pci_find_capability() instead. | |
1689 | */ | |
1690 | static inline int pci_pcie_cap(struct pci_dev *dev) | |
1691 | { | |
1692 | return dev->pcie_cap; | |
1693 | } | |
1694 | ||
7eb776c4 KK |
1695 | /** |
1696 | * pci_is_pcie - check if the PCI device is PCI Express capable | |
1697 | * @dev: PCI device | |
1698 | * | |
1699 | * Retrun true if the PCI device is PCI Express capable, false otherwise. | |
1700 | */ | |
1701 | static inline bool pci_is_pcie(struct pci_dev *dev) | |
1702 | { | |
1703 | return !!pci_pcie_cap(dev); | |
1704 | } | |
1705 | ||
7c9c003c MS |
1706 | /** |
1707 | * pcie_caps_reg - get the PCIe Capabilities Register | |
1708 | * @dev: PCI device | |
1709 | */ | |
1710 | static inline u16 pcie_caps_reg(const struct pci_dev *dev) | |
1711 | { | |
1712 | return dev->pcie_flags_reg; | |
1713 | } | |
1714 | ||
786e2288 YW |
1715 | /** |
1716 | * pci_pcie_type - get the PCIe device/port type | |
1717 | * @dev: PCI device | |
1718 | */ | |
1719 | static inline int pci_pcie_type(const struct pci_dev *dev) | |
1720 | { | |
1c531d82 | 1721 | return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
786e2288 YW |
1722 | } |
1723 | ||
5d990b62 | 1724 | void pci_request_acs(void); |
ad805758 AW |
1725 | bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
1726 | bool pci_acs_path_enabled(struct pci_dev *start, | |
1727 | struct pci_dev *end, u16 acs_flags); | |
a2ce7662 | 1728 | |
7ad506fa MC |
1729 | #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
1730 | #define PCI_VPD_LRDT_ID(x) (x | PCI_VPD_LRDT) | |
1731 | ||
1732 | /* Large Resource Data Type Tag Item Names */ | |
1733 | #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ | |
1734 | #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ | |
1735 | #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ | |
1736 | ||
1737 | #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) | |
1738 | #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) | |
1739 | #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) | |
1740 | ||
1741 | /* Small Resource Data Type Tag Item Names */ | |
1742 | #define PCI_VPD_STIN_END 0x78 /* End */ | |
1743 | ||
1744 | #define PCI_VPD_SRDT_END PCI_VPD_STIN_END | |
1745 | ||
1746 | #define PCI_VPD_SRDT_TIN_MASK 0x78 | |
1747 | #define PCI_VPD_SRDT_LEN_MASK 0x07 | |
1748 | ||
1749 | #define PCI_VPD_LRDT_TAG_SIZE 3 | |
1750 | #define PCI_VPD_SRDT_TAG_SIZE 1 | |
a2ce7662 | 1751 | |
e1d5bdab MC |
1752 | #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
1753 | ||
4067a854 MC |
1754 | #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
1755 | #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" | |
1756 | #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" | |
d4894f3e | 1757 | #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
4067a854 | 1758 | |
a2ce7662 MC |
1759 | /** |
1760 | * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length | |
1761 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag | |
1762 | * | |
1763 | * Returns the extracted Large Resource Data Type length. | |
1764 | */ | |
1765 | static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) | |
1766 | { | |
1767 | return (u16)lrdt[1] + ((u16)lrdt[2] << 8); | |
1768 | } | |
1769 | ||
7ad506fa MC |
1770 | /** |
1771 | * pci_vpd_srdt_size - Extracts the Small Resource Data Type length | |
1772 | * @lrdt: Pointer to the beginning of the Small Resource Data Type tag | |
1773 | * | |
1774 | * Returns the extracted Small Resource Data Type length. | |
1775 | */ | |
1776 | static inline u8 pci_vpd_srdt_size(const u8 *srdt) | |
1777 | { | |
1778 | return (*srdt) & PCI_VPD_SRDT_LEN_MASK; | |
1779 | } | |
1780 | ||
e1d5bdab MC |
1781 | /** |
1782 | * pci_vpd_info_field_size - Extracts the information field length | |
1783 | * @lrdt: Pointer to the beginning of an information field header | |
1784 | * | |
1785 | * Returns the extracted information field length. | |
1786 | */ | |
1787 | static inline u8 pci_vpd_info_field_size(const u8 *info_field) | |
1788 | { | |
1789 | return info_field[2]; | |
1790 | } | |
1791 | ||
b55ac1b2 MC |
1792 | /** |
1793 | * pci_vpd_find_tag - Locates the Resource Data Type tag provided | |
1794 | * @buf: Pointer to buffered vpd data | |
1795 | * @off: The offset into the buffer at which to begin the search | |
1796 | * @len: The length of the vpd buffer | |
1797 | * @rdt: The Resource Data Type to search for | |
1798 | * | |
1799 | * Returns the index where the Resource Data Type was found or | |
1800 | * -ENOENT otherwise. | |
1801 | */ | |
1802 | int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); | |
1803 | ||
4067a854 MC |
1804 | /** |
1805 | * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD | |
1806 | * @buf: Pointer to buffered vpd data | |
1807 | * @off: The offset into the buffer at which to begin the search | |
1808 | * @len: The length of the buffer area, relative to off, in which to search | |
1809 | * @kw: The keyword to search for | |
1810 | * | |
1811 | * Returns the index where the information field keyword was found or | |
1812 | * -ENOENT otherwise. | |
1813 | */ | |
1814 | int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, | |
1815 | unsigned int len, const char *kw); | |
1816 | ||
98d9f30c BH |
1817 | /* PCI <-> OF binding helpers */ |
1818 | #ifdef CONFIG_OF | |
1819 | struct device_node; | |
1820 | extern void pci_set_of_node(struct pci_dev *dev); | |
1821 | extern void pci_release_of_node(struct pci_dev *dev); | |
1822 | extern void pci_set_bus_of_node(struct pci_bus *bus); | |
1823 | extern void pci_release_bus_of_node(struct pci_bus *bus); | |
1824 | ||
1825 | /* Arch may override this (weak) */ | |
1826 | extern struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus); | |
1827 | ||
3df425f3 JC |
1828 | static inline struct device_node * |
1829 | pci_device_to_OF_node(const struct pci_dev *pdev) | |
64099d98 BH |
1830 | { |
1831 | return pdev ? pdev->dev.of_node : NULL; | |
1832 | } | |
1833 | ||
ef3b4f8c BH |
1834 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
1835 | { | |
1836 | return bus ? bus->dev.of_node : NULL; | |
1837 | } | |
1838 | ||
98d9f30c BH |
1839 | #else /* CONFIG_OF */ |
1840 | static inline void pci_set_of_node(struct pci_dev *dev) { } | |
1841 | static inline void pci_release_of_node(struct pci_dev *dev) { } | |
1842 | static inline void pci_set_bus_of_node(struct pci_bus *bus) { } | |
1843 | static inline void pci_release_bus_of_node(struct pci_bus *bus) { } | |
1844 | #endif /* CONFIG_OF */ | |
1845 | ||
eb740b5f GS |
1846 | #ifdef CONFIG_EEH |
1847 | static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) | |
1848 | { | |
1849 | return pdev->dev.archdata.edev; | |
1850 | } | |
1851 | #endif | |
1852 | ||
166e9278 OBC |
1853 | /** |
1854 | * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device | |
1855 | * @pdev: the PCI device | |
1856 | * | |
1857 | * if the device is PCIE, return NULL | |
1858 | * if the device isn't connected to a PCIe bridge (that is its parent is a | |
1859 | * legacy PCI bridge and the bridge is directly connected to bus 0), return its | |
1860 | * parent | |
1861 | */ | |
1862 | struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); | |
1863 | ||
1da177e4 | 1864 | #endif /* LINUX_PCI_H */ |