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 <linux/pci_ids.h> |
36 | ||
85467136 SK |
37 | /* |
38 | * The PCI interface treats multi-function devices as independent | |
39 | * devices. The slot/function address of each device is encoded | |
40 | * in a single byte as follows: | |
41 | * | |
42 | * 7:3 = slot | |
43 | * 2:0 = function | |
f7625980 BH |
44 | * |
45 | * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h. | |
85467136 | 46 | * In the interest of not exposing interfaces to user-space unnecessarily, |
f7625980 | 47 | * the following kernel-only defines are being added here. |
85467136 SK |
48 | */ |
49 | #define PCI_DEVID(bus, devfn) ((((u16)bus) << 8) | devfn) | |
50 | /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ | |
51 | #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) | |
52 | ||
f46753c5 AC |
53 | /* pci_slot represents a physical slot */ |
54 | struct pci_slot { | |
55 | struct pci_bus *bus; /* The bus this slot is on */ | |
56 | struct list_head list; /* node in list of slots on this bus */ | |
57 | struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ | |
58 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ | |
59 | struct kobject kobj; | |
60 | }; | |
61 | ||
0ad772ec AC |
62 | static inline const char *pci_slot_name(const struct pci_slot *slot) |
63 | { | |
64 | return kobject_name(&slot->kobj); | |
65 | } | |
66 | ||
1da177e4 LT |
67 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
68 | enum pci_mmap_state { | |
69 | pci_mmap_io, | |
70 | pci_mmap_mem | |
71 | }; | |
72 | ||
73 | /* This defines the direction arg to the DMA mapping routines. */ | |
74 | #define PCI_DMA_BIDIRECTIONAL 0 | |
75 | #define PCI_DMA_TODEVICE 1 | |
76 | #define PCI_DMA_FROMDEVICE 2 | |
77 | #define PCI_DMA_NONE 3 | |
78 | ||
fde09c6d YZ |
79 | /* |
80 | * For PCI devices, the region numbers are assigned this way: | |
81 | */ | |
82 | enum { | |
83 | /* #0-5: standard PCI resources */ | |
84 | PCI_STD_RESOURCES, | |
85 | PCI_STD_RESOURCE_END = 5, | |
86 | ||
87 | /* #6: expansion ROM resource */ | |
88 | PCI_ROM_RESOURCE, | |
89 | ||
d1b054da YZ |
90 | /* device specific resources */ |
91 | #ifdef CONFIG_PCI_IOV | |
92 | PCI_IOV_RESOURCES, | |
93 | PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, | |
94 | #endif | |
95 | ||
fde09c6d YZ |
96 | /* resources assigned to buses behind the bridge */ |
97 | #define PCI_BRIDGE_RESOURCE_NUM 4 | |
98 | ||
99 | PCI_BRIDGE_RESOURCES, | |
100 | PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + | |
101 | PCI_BRIDGE_RESOURCE_NUM - 1, | |
102 | ||
103 | /* total resources associated with a PCI device */ | |
104 | PCI_NUM_RESOURCES, | |
105 | ||
106 | /* preserve this for compatibility */ | |
cda57bf9 | 107 | DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
fde09c6d | 108 | }; |
1da177e4 LT |
109 | |
110 | typedef int __bitwise pci_power_t; | |
111 | ||
4352dfd5 GKH |
112 | #define PCI_D0 ((pci_power_t __force) 0) |
113 | #define PCI_D1 ((pci_power_t __force) 1) | |
114 | #define PCI_D2 ((pci_power_t __force) 2) | |
1da177e4 LT |
115 | #define PCI_D3hot ((pci_power_t __force) 3) |
116 | #define PCI_D3cold ((pci_power_t __force) 4) | |
3fe9d19f | 117 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
438510f6 | 118 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
1da177e4 | 119 | |
00240c38 AS |
120 | /* Remember to update this when the list above changes! */ |
121 | extern const char *pci_power_names[]; | |
122 | ||
123 | static inline const char *pci_power_name(pci_power_t state) | |
124 | { | |
125 | return pci_power_names[1 + (int) state]; | |
126 | } | |
127 | ||
448bd857 HY |
128 | #define PCI_PM_D2_DELAY 200 |
129 | #define PCI_PM_D3_WAIT 10 | |
130 | #define PCI_PM_D3COLD_WAIT 100 | |
131 | #define PCI_PM_BUS_WAIT 50 | |
aa8c6c93 | 132 | |
392a1ce7 | 133 | /** The pci_channel state describes connectivity between the CPU and |
134 | * the pci device. If some PCI bus between here and the pci device | |
135 | * has crashed or locked up, this info is reflected here. | |
136 | */ | |
137 | typedef unsigned int __bitwise pci_channel_state_t; | |
138 | ||
139 | enum pci_channel_state { | |
140 | /* I/O channel is in normal state */ | |
141 | pci_channel_io_normal = (__force pci_channel_state_t) 1, | |
142 | ||
143 | /* I/O to channel is blocked */ | |
144 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, | |
145 | ||
146 | /* PCI card is dead */ | |
147 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, | |
148 | }; | |
149 | ||
f7bdd12d BK |
150 | typedef unsigned int __bitwise pcie_reset_state_t; |
151 | ||
152 | enum pcie_reset_state { | |
153 | /* Reset is NOT asserted (Use to deassert reset) */ | |
154 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, | |
155 | ||
f7625980 | 156 | /* Use #PERST to reset PCIe device */ |
f7bdd12d BK |
157 | pcie_warm_reset = (__force pcie_reset_state_t) 2, |
158 | ||
f7625980 | 159 | /* Use PCIe Hot Reset to reset device */ |
f7bdd12d BK |
160 | pcie_hot_reset = (__force pcie_reset_state_t) 3 |
161 | }; | |
162 | ||
ba698ad4 DM |
163 | typedef unsigned short __bitwise pci_dev_flags_t; |
164 | enum pci_dev_flags { | |
165 | /* INTX_DISABLE in PCI_COMMAND register disables MSI | |
166 | * generation too. | |
167 | */ | |
168 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, | |
979b1791 AC |
169 | /* Device configuration is irrevocably lost if disabled into D3 */ |
170 | PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, | |
6777829c GR |
171 | /* Provide indication device is assigned by a Virtual Machine Manager */ |
172 | PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, | |
ba698ad4 DM |
173 | }; |
174 | ||
e1d3a908 SA |
175 | enum pci_irq_reroute_variant { |
176 | INTEL_IRQ_REROUTE_VARIANT = 1, | |
177 | MAX_IRQ_REROUTE_VARIANTS = 3 | |
178 | }; | |
179 | ||
6e325a62 MT |
180 | typedef unsigned short __bitwise pci_bus_flags_t; |
181 | enum pci_bus_flags { | |
d556ad4b PO |
182 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
183 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, | |
6e325a62 MT |
184 | }; |
185 | ||
59da381e JK |
186 | /* These values come from the PCI Express Spec */ |
187 | enum pcie_link_width { | |
188 | PCIE_LNK_WIDTH_RESRV = 0x00, | |
189 | PCIE_LNK_X1 = 0x01, | |
190 | PCIE_LNK_X2 = 0x02, | |
191 | PCIE_LNK_X4 = 0x04, | |
192 | PCIE_LNK_X8 = 0x08, | |
193 | PCIE_LNK_X12 = 0x0C, | |
194 | PCIE_LNK_X16 = 0x10, | |
195 | PCIE_LNK_X32 = 0x20, | |
196 | PCIE_LNK_WIDTH_UNKNOWN = 0xFF, | |
197 | }; | |
198 | ||
536c8cb4 MW |
199 | /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
200 | enum pci_bus_speed { | |
201 | PCI_SPEED_33MHz = 0x00, | |
202 | PCI_SPEED_66MHz = 0x01, | |
203 | PCI_SPEED_66MHz_PCIX = 0x02, | |
204 | PCI_SPEED_100MHz_PCIX = 0x03, | |
205 | PCI_SPEED_133MHz_PCIX = 0x04, | |
206 | PCI_SPEED_66MHz_PCIX_ECC = 0x05, | |
207 | PCI_SPEED_100MHz_PCIX_ECC = 0x06, | |
208 | PCI_SPEED_133MHz_PCIX_ECC = 0x07, | |
209 | PCI_SPEED_66MHz_PCIX_266 = 0x09, | |
210 | PCI_SPEED_100MHz_PCIX_266 = 0x0a, | |
211 | PCI_SPEED_133MHz_PCIX_266 = 0x0b, | |
45b4cdd5 MW |
212 | AGP_UNKNOWN = 0x0c, |
213 | AGP_1X = 0x0d, | |
214 | AGP_2X = 0x0e, | |
215 | AGP_4X = 0x0f, | |
216 | AGP_8X = 0x10, | |
536c8cb4 MW |
217 | PCI_SPEED_66MHz_PCIX_533 = 0x11, |
218 | PCI_SPEED_100MHz_PCIX_533 = 0x12, | |
219 | PCI_SPEED_133MHz_PCIX_533 = 0x13, | |
220 | PCIE_SPEED_2_5GT = 0x14, | |
221 | PCIE_SPEED_5_0GT = 0x15, | |
9dfd97fe | 222 | PCIE_SPEED_8_0GT = 0x16, |
536c8cb4 MW |
223 | PCI_SPEED_UNKNOWN = 0xff, |
224 | }; | |
225 | ||
24a4742f | 226 | struct pci_cap_saved_data { |
fd0f7f73 AW |
227 | u16 cap_nr; |
228 | bool cap_extended; | |
24a4742f | 229 | unsigned int size; |
41017f0c SL |
230 | u32 data[0]; |
231 | }; | |
232 | ||
24a4742f AW |
233 | struct pci_cap_saved_state { |
234 | struct hlist_node next; | |
235 | struct pci_cap_saved_data cap; | |
236 | }; | |
237 | ||
7d715a6c | 238 | struct pcie_link_state; |
ee69439c | 239 | struct pci_vpd; |
d1b054da | 240 | struct pci_sriov; |
302b4215 | 241 | struct pci_ats; |
ee69439c | 242 | |
1da177e4 LT |
243 | /* |
244 | * The pci_dev structure is used to describe PCI devices. | |
245 | */ | |
246 | struct pci_dev { | |
1da177e4 LT |
247 | struct list_head bus_list; /* node in per-bus list */ |
248 | struct pci_bus *bus; /* bus this device is on */ | |
249 | struct pci_bus *subordinate; /* bus this device bridges to */ | |
250 | ||
251 | void *sysdata; /* hook for sys-specific extension */ | |
252 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ | |
f46753c5 | 253 | struct pci_slot *slot; /* Physical slot this device is in */ |
1da177e4 LT |
254 | |
255 | unsigned int devfn; /* encoded device & function index */ | |
256 | unsigned short vendor; | |
257 | unsigned short device; | |
258 | unsigned short subsystem_vendor; | |
259 | unsigned short subsystem_device; | |
260 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ | |
b8a3a521 | 261 | u8 revision; /* PCI revision, low byte of class word */ |
1da177e4 | 262 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
f7625980 | 263 | u8 pcie_cap; /* PCIe capability offset */ |
e375b561 GS |
264 | u8 msi_cap; /* MSI capability offset */ |
265 | u8 msix_cap; /* MSI-X capability offset */ | |
f7625980 | 266 | u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */ |
1da177e4 | 267 | u8 rom_base_reg; /* which config register controls the ROM */ |
f7625980 BH |
268 | u8 pin; /* which interrupt pin this device uses */ |
269 | u16 pcie_flags_reg; /* cached PCIe Capabilities Register */ | |
1da177e4 LT |
270 | |
271 | struct pci_driver *driver; /* which driver has allocated this device */ | |
272 | u64 dma_mask; /* Mask of the bits of bus address this | |
273 | device implements. Normally this is | |
274 | 0xffffffff. You only need to change | |
275 | this if your device has broken DMA | |
276 | or supports 64-bit transfers. */ | |
277 | ||
4d57cdfa FT |
278 | struct device_dma_parameters dma_parms; |
279 | ||
1da177e4 LT |
280 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
281 | this is D0-D3, D0 being fully functional, | |
282 | and D3 being off. */ | |
703860ed | 283 | u8 pm_cap; /* PM capability offset */ |
337001b6 RW |
284 | unsigned int pme_support:5; /* Bitmask of states from which PME# |
285 | can be generated */ | |
c7f48656 | 286 | unsigned int pme_interrupt:1; |
379021d5 | 287 | unsigned int pme_poll:1; /* Poll device's PME status bit */ |
337001b6 RW |
288 | unsigned int d1_support:1; /* Low power state D1 is supported */ |
289 | unsigned int d2_support:1; /* Low power state D2 is supported */ | |
448bd857 HY |
290 | unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
291 | unsigned int no_d3cold:1; /* D3cold is forbidden */ | |
292 | unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ | |
253d2e54 JP |
293 | unsigned int mmio_always_on:1; /* disallow turning off io/mem |
294 | decoding during bar sizing */ | |
e80bb09d | 295 | unsigned int wakeup_prepared:1; |
448bd857 HY |
296 | unsigned int runtime_d3cold:1; /* whether go through runtime |
297 | D3cold, not set for devices | |
298 | powered on/off by the | |
299 | corresponding bridge */ | |
1ae861e6 | 300 | unsigned int d3_delay; /* D3->D0 transition time in ms */ |
448bd857 | 301 | unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
1da177e4 | 302 | |
7d715a6c | 303 | #ifdef CONFIG_PCIEASPM |
f7625980 | 304 | struct pcie_link_state *link_state; /* ASPM link state */ |
7d715a6c SL |
305 | #endif |
306 | ||
392a1ce7 | 307 | pci_channel_state_t error_state; /* current connectivity state */ |
1da177e4 LT |
308 | struct device dev; /* Generic device interface */ |
309 | ||
1da177e4 LT |
310 | int cfg_size; /* Size of configuration space */ |
311 | ||
312 | /* | |
313 | * Instead of touching interrupt line and base address registers | |
314 | * directly, use the values stored here. They might be different! | |
315 | */ | |
316 | unsigned int irq; | |
317 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ | |
318 | ||
58d9a38f | 319 | bool match_driver; /* Skip attaching driver */ |
1da177e4 | 320 | /* These fields are used by common fixups */ |
f7625980 | 321 | unsigned int transparent:1; /* Subtractive decode PCI bridge */ |
1da177e4 LT |
322 | unsigned int multifunction:1;/* Part of multi-function device */ |
323 | /* keep track of device state */ | |
8a1bc901 | 324 | unsigned int is_added:1; |
1da177e4 | 325 | unsigned int is_busmaster:1; /* device is busmaster */ |
4602b88d | 326 | unsigned int no_msi:1; /* device may not use msi */ |
fb51ccbf | 327 | unsigned int block_cfg_access:1; /* config space access is blocked */ |
bd8481e1 | 328 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
e1d3a908 | 329 | unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ |
f7625980 | 330 | unsigned int msi_enabled:1; |
99dc804d | 331 | unsigned int msix_enabled:1; |
58c3a727 | 332 | unsigned int ari_enabled:1; /* ARI forwarding */ |
9ac7849e | 333 | unsigned int is_managed:1; |
260d703a | 334 | unsigned int needs_freset:1; /* Dev requires fundamental reset */ |
aa8c6c93 | 335 | unsigned int state_saved:1; |
d1b054da | 336 | unsigned int is_physfn:1; |
dd7cc44d | 337 | unsigned int is_virtfn:1; |
711d5779 | 338 | unsigned int reset_fn:1; |
28760489 | 339 | unsigned int is_hotplug_bridge:1; |
affb72c3 HY |
340 | unsigned int __aer_firmware_first_valid:1; |
341 | unsigned int __aer_firmware_first:1; | |
fbebb9fd | 342 | unsigned int broken_intx_masking:1; |
2b28ae19 | 343 | unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */ |
ba698ad4 | 344 | pci_dev_flags_t dev_flags; |
bae94d02 | 345 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
4602b88d | 346 | |
1da177e4 | 347 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
41017f0c | 348 | struct hlist_head saved_cap_space; |
1da177e4 LT |
349 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
350 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ | |
351 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ | |
45aec1ae | 352 | struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
ded86d8d | 353 | #ifdef CONFIG_PCI_MSI |
4aa9bc95 | 354 | struct list_head msi_list; |
1c51b50c | 355 | const struct attribute_group **msi_irq_groups; |
ded86d8d | 356 | #endif |
94e61088 | 357 | struct pci_vpd *vpd; |
466b3ddf | 358 | #ifdef CONFIG_PCI_ATS |
dd7cc44d YZ |
359 | union { |
360 | struct pci_sriov *sriov; /* SR-IOV capability related */ | |
361 | struct pci_dev *physfn; /* the PF this VF is associated with */ | |
362 | }; | |
302b4215 | 363 | struct pci_ats *ats; /* Address Translation Service */ |
d1b054da | 364 | #endif |
dbd3fc33 | 365 | phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ |
84c1b80e | 366 | size_t romlen; /* Length of ROM if it's not from the BAR */ |
1da177e4 LT |
367 | }; |
368 | ||
dda56549 Y |
369 | static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
370 | { | |
371 | #ifdef CONFIG_PCI_IOV | |
372 | if (dev->is_virtfn) | |
373 | dev = dev->physfn; | |
374 | #endif | |
dda56549 Y |
375 | return dev; |
376 | } | |
377 | ||
3c6e6ae7 | 378 | struct pci_dev *pci_alloc_dev(struct pci_bus *bus); |
65891215 | 379 | |
1da177e4 LT |
380 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
381 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) | |
382 | ||
a7369f1f LV |
383 | static inline int pci_channel_offline(struct pci_dev *pdev) |
384 | { | |
385 | return (pdev->error_state != pci_channel_io_normal); | |
386 | } | |
387 | ||
0efd5aab BH |
388 | struct pci_host_bridge_window { |
389 | struct list_head list; | |
390 | struct resource *res; /* host bridge aperture (CPU address) */ | |
391 | resource_size_t offset; /* bus address + offset = CPU address */ | |
392 | }; | |
41017f0c | 393 | |
5a21d70d | 394 | struct pci_host_bridge { |
7b543663 | 395 | struct device dev; |
5a21d70d | 396 | struct pci_bus *bus; /* root bus */ |
0efd5aab | 397 | struct list_head windows; /* pci_host_bridge_windows */ |
4fa2649a YL |
398 | void (*release_fn)(struct pci_host_bridge *); |
399 | void *release_data; | |
5a21d70d | 400 | }; |
41017f0c | 401 | |
7b543663 | 402 | #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
4fa2649a YL |
403 | void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
404 | void (*release_fn)(struct pci_host_bridge *), | |
405 | void *release_data); | |
7b543663 | 406 | |
6c0cc950 RW |
407 | int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
408 | ||
2fe2abf8 BH |
409 | /* |
410 | * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond | |
411 | * to P2P or CardBus bridge windows) go in a table. Additional ones (for | |
412 | * buses below host bridges or subtractive decode bridges) go in the list. | |
413 | * Use pci_bus_for_each_resource() to iterate through all the resources. | |
414 | */ | |
415 | ||
416 | /* | |
417 | * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly | |
418 | * and there's no way to program the bridge with the details of the window. | |
419 | * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- | |
420 | * decode bit set, because they are explicit and can be programmed with _SRS. | |
421 | */ | |
422 | #define PCI_SUBTRACTIVE_DECODE 0x1 | |
423 | ||
424 | struct pci_bus_resource { | |
425 | struct list_head list; | |
426 | struct resource *res; | |
427 | unsigned int flags; | |
428 | }; | |
4352dfd5 GKH |
429 | |
430 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ | |
1da177e4 LT |
431 | |
432 | struct pci_bus { | |
433 | struct list_head node; /* node in list of buses */ | |
434 | struct pci_bus *parent; /* parent bus this bridge is on */ | |
435 | struct list_head children; /* list of child buses */ | |
436 | struct list_head devices; /* list of devices on this bus */ | |
437 | struct pci_dev *self; /* bridge device as seen by parent */ | |
f46753c5 | 438 | struct list_head slots; /* list of slots on this bus */ |
2fe2abf8 BH |
439 | struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
440 | struct list_head resources; /* address space routed to this bus */ | |
92f02430 | 441 | struct resource busn_res; /* bus numbers routed to this bus */ |
1da177e4 LT |
442 | |
443 | struct pci_ops *ops; /* configuration access functions */ | |
0cbdcfcf | 444 | struct msi_chip *msi; /* MSI controller */ |
1da177e4 LT |
445 | void *sysdata; /* hook for sys-specific extension */ |
446 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ | |
447 | ||
448 | unsigned char number; /* bus number */ | |
449 | unsigned char primary; /* number of primary bridge */ | |
3749c51a MW |
450 | unsigned char max_bus_speed; /* enum pci_bus_speed */ |
451 | unsigned char cur_bus_speed; /* enum pci_bus_speed */ | |
1da177e4 LT |
452 | |
453 | char name[48]; | |
454 | ||
455 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ | |
f7625980 | 456 | pci_bus_flags_t bus_flags; /* inherited by child buses */ |
1da177e4 | 457 | struct device *bridge; |
fd7d1ced | 458 | struct device dev; |
1da177e4 LT |
459 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
460 | struct bin_attribute *legacy_mem; /* legacy mem */ | |
cc74d96f | 461 | unsigned int is_added:1; |
1da177e4 LT |
462 | }; |
463 | ||
464 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) | |
fd7d1ced | 465 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
1da177e4 | 466 | |
79af72d7 | 467 | /* |
f7625980 | 468 | * Returns true if the PCI bus is root (behind host-PCI bridge), |
79af72d7 | 469 | * false otherwise |
77a0dfcd BH |
470 | * |
471 | * Some code assumes that "bus->self == NULL" means that bus is a root bus. | |
472 | * This is incorrect because "virtual" buses added for SR-IOV (via | |
473 | * virtfn_add_bus()) have "bus->self == NULL" but are not root buses. | |
79af72d7 KK |
474 | */ |
475 | static inline bool pci_is_root_bus(struct pci_bus *pbus) | |
476 | { | |
477 | return !(pbus->parent); | |
478 | } | |
479 | ||
c6bde215 BH |
480 | static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) |
481 | { | |
482 | dev = pci_physfn(dev); | |
483 | if (pci_is_root_bus(dev->bus)) | |
484 | return NULL; | |
485 | ||
486 | return dev->bus->self; | |
487 | } | |
488 | ||
16cf0ebc RW |
489 | #ifdef CONFIG_PCI_MSI |
490 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) | |
491 | { | |
492 | return pci_dev->msi_enabled || pci_dev->msix_enabled; | |
493 | } | |
494 | #else | |
495 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } | |
496 | #endif | |
497 | ||
1da177e4 LT |
498 | /* |
499 | * Error values that may be returned by PCI functions. | |
500 | */ | |
501 | #define PCIBIOS_SUCCESSFUL 0x00 | |
502 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 | |
503 | #define PCIBIOS_BAD_VENDOR_ID 0x83 | |
504 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 | |
505 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 | |
506 | #define PCIBIOS_SET_FAILED 0x88 | |
507 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 | |
508 | ||
a6961651 | 509 | /* |
f7625980 | 510 | * Translate above to generic errno for passing back through non-PCI code. |
a6961651 AW |
511 | */ |
512 | static inline int pcibios_err_to_errno(int err) | |
513 | { | |
514 | if (err <= PCIBIOS_SUCCESSFUL) | |
515 | return err; /* Assume already errno */ | |
516 | ||
517 | switch (err) { | |
518 | case PCIBIOS_FUNC_NOT_SUPPORTED: | |
519 | return -ENOENT; | |
520 | case PCIBIOS_BAD_VENDOR_ID: | |
521 | return -EINVAL; | |
522 | case PCIBIOS_DEVICE_NOT_FOUND: | |
523 | return -ENODEV; | |
524 | case PCIBIOS_BAD_REGISTER_NUMBER: | |
525 | return -EFAULT; | |
526 | case PCIBIOS_SET_FAILED: | |
527 | return -EIO; | |
528 | case PCIBIOS_BUFFER_TOO_SMALL: | |
529 | return -ENOSPC; | |
530 | } | |
531 | ||
532 | return -ENOTTY; | |
533 | } | |
534 | ||
1da177e4 LT |
535 | /* Low-level architecture-dependent routines */ |
536 | ||
537 | struct pci_ops { | |
538 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); | |
539 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); | |
540 | }; | |
541 | ||
b6ce068a MW |
542 | /* |
543 | * ACPI needs to be able to access PCI config space before we've done a | |
544 | * PCI bus scan and created pci_bus structures. | |
545 | */ | |
f39d5b72 BH |
546 | int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, |
547 | int reg, int len, u32 *val); | |
548 | int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, | |
549 | int reg, int len, u32 val); | |
1da177e4 LT |
550 | |
551 | struct pci_bus_region { | |
0a5ef7b9 BH |
552 | dma_addr_t start; |
553 | dma_addr_t end; | |
1da177e4 LT |
554 | }; |
555 | ||
556 | struct pci_dynids { | |
557 | spinlock_t lock; /* protects list, index */ | |
558 | struct list_head list; /* for IDs added at runtime */ | |
1da177e4 LT |
559 | }; |
560 | ||
f7625980 BH |
561 | |
562 | /* | |
563 | * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides | |
564 | * a set of callbacks in struct pci_error_handlers, that device driver | |
565 | * will be notified of PCI bus errors, and will be driven to recovery | |
566 | * when an error occurs. | |
392a1ce7 | 567 | */ |
568 | ||
569 | typedef unsigned int __bitwise pci_ers_result_t; | |
570 | ||
571 | enum pci_ers_result { | |
572 | /* no result/none/not supported in device driver */ | |
573 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, | |
574 | ||
575 | /* Device driver can recover without slot reset */ | |
576 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, | |
577 | ||
578 | /* Device driver wants slot to be reset. */ | |
579 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, | |
580 | ||
581 | /* Device has completely failed, is unrecoverable */ | |
582 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, | |
583 | ||
584 | /* Device driver is fully recovered and operational */ | |
585 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, | |
918b4053 VMP |
586 | |
587 | /* No AER capabilities registered for the driver */ | |
588 | PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, | |
392a1ce7 | 589 | }; |
590 | ||
591 | /* PCI bus error event callbacks */ | |
05cca6e5 | 592 | struct pci_error_handlers { |
392a1ce7 | 593 | /* PCI bus error detected on this device */ |
594 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, | |
05cca6e5 | 595 | enum pci_channel_state error); |
392a1ce7 | 596 | |
597 | /* MMIO has been re-enabled, but not DMA */ | |
598 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); | |
599 | ||
600 | /* PCI Express link has been reset */ | |
601 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); | |
602 | ||
603 | /* PCI slot has been reset */ | |
604 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); | |
605 | ||
606 | /* Device driver may resume normal operations */ | |
607 | void (*resume)(struct pci_dev *dev); | |
608 | }; | |
609 | ||
392a1ce7 | 610 | |
1da177e4 LT |
611 | struct module; |
612 | struct pci_driver { | |
613 | struct list_head node; | |
42b21932 | 614 | const char *name; |
1da177e4 LT |
615 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
616 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ | |
617 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
618 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ | |
cbd69dbb LT |
619 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
620 | int (*resume_early) (struct pci_dev *dev); | |
1da177e4 | 621 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
c8958177 | 622 | void (*shutdown) (struct pci_dev *dev); |
1789382a | 623 | int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ |
49453028 | 624 | const struct pci_error_handlers *err_handler; |
1da177e4 LT |
625 | struct device_driver driver; |
626 | struct pci_dynids dynids; | |
627 | }; | |
628 | ||
05cca6e5 | 629 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
1da177e4 | 630 | |
90a1ba0c | 631 | /** |
9f9351bb | 632 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
90a1ba0c JB |
633 | * @_table: device table name |
634 | * | |
92e112fd | 635 | * This macro is deprecated and should not be used in new code. |
90a1ba0c | 636 | */ |
9f9351bb | 637 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
15856ad5 | 638 | const struct pci_device_id _table[] |
90a1ba0c | 639 | |
1da177e4 LT |
640 | /** |
641 | * PCI_DEVICE - macro used to describe a specific pci device | |
642 | * @vend: the 16 bit PCI Vendor ID | |
643 | * @dev: the 16 bit PCI Device ID | |
644 | * | |
645 | * This macro is used to create a struct pci_device_id that matches a | |
646 | * specific device. The subvendor and subdevice fields will be set to | |
647 | * PCI_ANY_ID. | |
648 | */ | |
649 | #define PCI_DEVICE(vend,dev) \ | |
650 | .vendor = (vend), .device = (dev), \ | |
651 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
652 | ||
3d567e0e NNS |
653 | /** |
654 | * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem | |
655 | * @vend: the 16 bit PCI Vendor ID | |
656 | * @dev: the 16 bit PCI Device ID | |
657 | * @subvend: the 16 bit PCI Subvendor ID | |
658 | * @subdev: the 16 bit PCI Subdevice ID | |
659 | * | |
660 | * This macro is used to create a struct pci_device_id that matches a | |
661 | * specific device with subsystem information. | |
662 | */ | |
663 | #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ | |
664 | .vendor = (vend), .device = (dev), \ | |
665 | .subvendor = (subvend), .subdevice = (subdev) | |
666 | ||
1da177e4 LT |
667 | /** |
668 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class | |
669 | * @dev_class: the class, subclass, prog-if triple for this device | |
670 | * @dev_class_mask: the class mask for this device | |
671 | * | |
672 | * This macro is used to create a struct pci_device_id that matches a | |
4352dfd5 | 673 | * specific PCI class. The vendor, device, subvendor, and subdevice |
1da177e4 LT |
674 | * fields will be set to PCI_ANY_ID. |
675 | */ | |
676 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ | |
677 | .class = (dev_class), .class_mask = (dev_class_mask), \ | |
678 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ | |
679 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
680 | ||
1597cacb AC |
681 | /** |
682 | * PCI_VDEVICE - macro used to describe a specific pci device in short form | |
c322b28a ZY |
683 | * @vendor: the vendor name |
684 | * @device: the 16 bit PCI Device ID | |
1597cacb AC |
685 | * |
686 | * This macro is used to create a struct pci_device_id that matches a | |
687 | * specific PCI device. The subvendor, and subdevice fields will be set | |
688 | * to PCI_ANY_ID. The macro allows the next field to follow as the device | |
689 | * private data. | |
690 | */ | |
691 | ||
692 | #define PCI_VDEVICE(vendor, device) \ | |
693 | PCI_VENDOR_ID_##vendor, (device), \ | |
694 | PCI_ANY_ID, PCI_ANY_ID, 0, 0 | |
695 | ||
1da177e4 LT |
696 | /* these external functions are only available when PCI support is enabled */ |
697 | #ifdef CONFIG_PCI | |
698 | ||
a58674ff | 699 | void pcie_bus_configure_settings(struct pci_bus *bus); |
b03e7495 JM |
700 | |
701 | enum pcie_bus_config_types { | |
5f39e670 | 702 | PCIE_BUS_TUNE_OFF, |
b03e7495 | 703 | PCIE_BUS_SAFE, |
5f39e670 | 704 | PCIE_BUS_PERFORMANCE, |
b03e7495 JM |
705 | PCIE_BUS_PEER2PEER, |
706 | }; | |
707 | ||
708 | extern enum pcie_bus_config_types pcie_bus_config; | |
709 | ||
1da177e4 LT |
710 | extern struct bus_type pci_bus_type; |
711 | ||
f7625980 BH |
712 | /* Do NOT directly access these two variables, unless you are arch-specific PCI |
713 | * code, or PCI core code. */ | |
1da177e4 | 714 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
f7625980 | 715 | /* Some device drivers need know if PCI is initiated */ |
f39d5b72 | 716 | int no_pci_devices(void); |
1da177e4 | 717 | |
3c449ed0 | 718 | void pcibios_resource_survey_bus(struct pci_bus *bus); |
10a95747 JL |
719 | void pcibios_add_bus(struct pci_bus *bus); |
720 | void pcibios_remove_bus(struct pci_bus *bus); | |
1da177e4 | 721 | void pcibios_fixup_bus(struct pci_bus *); |
4a7fb636 | 722 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
f7625980 | 723 | /* Architecture-specific versions may override this (weak) */ |
05cca6e5 | 724 | char *pcibios_setup(char *str); |
1da177e4 LT |
725 | |
726 | /* Used only when drivers/pci/setup.c is used */ | |
3b7a17fc | 727 | resource_size_t pcibios_align_resource(void *, const struct resource *, |
b26b2d49 | 728 | resource_size_t, |
e31dd6e4 | 729 | resource_size_t); |
1da177e4 LT |
730 | void pcibios_update_irq(struct pci_dev *, int irq); |
731 | ||
2d1c8618 BH |
732 | /* Weak but can be overriden by arch */ |
733 | void pci_fixup_cardbus(struct pci_bus *); | |
734 | ||
1da177e4 LT |
735 | /* Generic PCI functions used internally */ |
736 | ||
fc279850 | 737 | void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, |
36a66cd6 | 738 | struct resource *res); |
fc279850 | 739 | void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, |
36a66cd6 | 740 | struct pci_bus_region *region); |
d1fd4fb6 | 741 | void pcibios_scan_specific_bus(int busn); |
f39d5b72 | 742 | struct pci_bus *pci_find_bus(int domain, int busnr); |
c48f1670 | 743 | void pci_bus_add_devices(const struct pci_bus *bus); |
05cca6e5 GKH |
744 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, |
745 | struct pci_ops *ops, void *sysdata); | |
de4b2f76 | 746 | struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
166c6370 BH |
747 | struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
748 | struct pci_ops *ops, void *sysdata, | |
749 | struct list_head *resources); | |
98a35831 YL |
750 | int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
751 | int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); | |
752 | void pci_bus_release_busn_res(struct pci_bus *b); | |
15856ad5 | 753 | struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
a2ebb827 BH |
754 | struct pci_ops *ops, void *sysdata, |
755 | struct list_head *resources); | |
05cca6e5 GKH |
756 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
757 | int busnr); | |
3749c51a | 758 | void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
f46753c5 | 759 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
828f3768 AC |
760 | const char *name, |
761 | struct hotplug_slot *hotplug); | |
f46753c5 | 762 | void pci_destroy_slot(struct pci_slot *slot); |
1da177e4 | 763 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
05cca6e5 | 764 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
cdb9b9f7 | 765 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
1da177e4 | 766 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
b19441af | 767 | int __must_check pci_bus_add_device(struct pci_dev *dev); |
1da177e4 | 768 | void pci_read_bridge_bases(struct pci_bus *child); |
05cca6e5 GKH |
769 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
770 | struct resource *res); | |
3df425f3 | 771 | u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
1da177e4 | 772 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
68feac87 | 773 | u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
f39d5b72 BH |
774 | struct pci_dev *pci_dev_get(struct pci_dev *dev); |
775 | void pci_dev_put(struct pci_dev *dev); | |
776 | void pci_remove_bus(struct pci_bus *b); | |
777 | void pci_stop_and_remove_bus_device(struct pci_dev *dev); | |
9d16947b | 778 | void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); |
cdfcc572 YL |
779 | void pci_stop_root_bus(struct pci_bus *bus); |
780 | void pci_remove_root_bus(struct pci_bus *bus); | |
b3743fa4 | 781 | void pci_setup_cardbus(struct pci_bus *bus); |
f39d5b72 | 782 | void pci_sort_breadthfirst(void); |
fb8a0d9d WM |
783 | #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
784 | #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) | |
785 | #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0)) | |
1da177e4 LT |
786 | |
787 | /* Generic PCI functions exported to card drivers */ | |
788 | ||
388c8c16 JB |
789 | enum pci_lost_interrupt_reason { |
790 | PCI_LOST_IRQ_NO_INFORMATION = 0, | |
791 | PCI_LOST_IRQ_DISABLE_MSI, | |
792 | PCI_LOST_IRQ_DISABLE_MSIX, | |
793 | PCI_LOST_IRQ_DISABLE_ACPI, | |
794 | }; | |
795 | enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); | |
05cca6e5 GKH |
796 | int pci_find_capability(struct pci_dev *dev, int cap); |
797 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); | |
798 | int pci_find_ext_capability(struct pci_dev *dev, int cap); | |
44a9a36f | 799 | int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
05cca6e5 GKH |
800 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
801 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); | |
29f3eb64 | 802 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
1da177e4 | 803 | |
d42552c3 AM |
804 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
805 | struct pci_dev *from); | |
05cca6e5 | 806 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
1da177e4 | 807 | unsigned int ss_vendor, unsigned int ss_device, |
b08508c4 | 808 | struct pci_dev *from); |
05cca6e5 | 809 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
3c299dc2 AP |
810 | struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
811 | unsigned int devfn); | |
812 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, | |
813 | unsigned int devfn) | |
814 | { | |
815 | return pci_get_domain_bus_and_slot(0, bus, devfn); | |
816 | } | |
05cca6e5 | 817 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
1da177e4 LT |
818 | int pci_dev_present(const struct pci_device_id *ids); |
819 | ||
05cca6e5 GKH |
820 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
821 | int where, u8 *val); | |
822 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, | |
823 | int where, u16 *val); | |
824 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, | |
825 | int where, u32 *val); | |
826 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, | |
827 | int where, u8 val); | |
828 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, | |
829 | int where, u16 val); | |
830 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, | |
831 | int where, u32 val); | |
a72b46c3 | 832 | struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
1da177e4 | 833 | |
bf362f75 | 834 | static inline int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val) |
1da177e4 | 835 | { |
05cca6e5 | 836 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 837 | } |
bf362f75 | 838 | static inline int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val) |
1da177e4 | 839 | { |
05cca6e5 | 840 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 841 | } |
bf362f75 | 842 | static inline int pci_read_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 843 | u32 *val) |
1da177e4 | 844 | { |
05cca6e5 | 845 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 | 846 | } |
bf362f75 | 847 | static inline int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val) |
1da177e4 | 848 | { |
05cca6e5 | 849 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 850 | } |
bf362f75 | 851 | static inline int pci_write_config_word(const struct pci_dev *dev, int where, u16 val) |
1da177e4 | 852 | { |
05cca6e5 | 853 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 854 | } |
bf362f75 | 855 | static inline int pci_write_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 856 | u32 val) |
1da177e4 | 857 | { |
05cca6e5 | 858 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
859 | } |
860 | ||
8c0d3a02 JL |
861 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
862 | int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); | |
863 | int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); | |
864 | int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); | |
865 | int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, | |
866 | u16 clear, u16 set); | |
867 | int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, | |
868 | u32 clear, u32 set); | |
869 | ||
870 | static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, | |
871 | u16 set) | |
872 | { | |
873 | return pcie_capability_clear_and_set_word(dev, pos, 0, set); | |
874 | } | |
875 | ||
876 | static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, | |
877 | u32 set) | |
878 | { | |
879 | return pcie_capability_clear_and_set_dword(dev, pos, 0, set); | |
880 | } | |
881 | ||
882 | static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, | |
883 | u16 clear) | |
884 | { | |
885 | return pcie_capability_clear_and_set_word(dev, pos, clear, 0); | |
886 | } | |
887 | ||
888 | static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, | |
889 | u32 clear) | |
890 | { | |
891 | return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); | |
892 | } | |
893 | ||
c63587d7 AW |
894 | /* user-space driven config access */ |
895 | int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); | |
896 | int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); | |
897 | int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); | |
898 | int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); | |
899 | int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); | |
900 | int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); | |
901 | ||
4a7fb636 | 902 | int __must_check pci_enable_device(struct pci_dev *dev); |
b718989d BH |
903 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
904 | int __must_check pci_enable_device_mem(struct pci_dev *dev); | |
0b62e13b | 905 | int __must_check pci_reenable_device(struct pci_dev *); |
9ac7849e TH |
906 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
907 | void pcim_pin_device(struct pci_dev *pdev); | |
908 | ||
296ccb08 YS |
909 | static inline int pci_is_enabled(struct pci_dev *pdev) |
910 | { | |
911 | return (atomic_read(&pdev->enable_cnt) > 0); | |
912 | } | |
913 | ||
9ac7849e TH |
914 | static inline int pci_is_managed(struct pci_dev *pdev) |
915 | { | |
916 | return pdev->is_managed; | |
917 | } | |
918 | ||
1da177e4 | 919 | void pci_disable_device(struct pci_dev *dev); |
96c55900 MS |
920 | |
921 | extern unsigned int pcibios_max_latency; | |
1da177e4 | 922 | void pci_set_master(struct pci_dev *dev); |
6a479079 | 923 | void pci_clear_master(struct pci_dev *dev); |
96c55900 | 924 | |
f7bdd12d | 925 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
15ea76d4 | 926 | int pci_set_cacheline_size(struct pci_dev *dev); |
1da177e4 | 927 | #define HAVE_PCI_SET_MWI |
4a7fb636 | 928 | int __must_check pci_set_mwi(struct pci_dev *dev); |
694625c0 | 929 | int pci_try_set_mwi(struct pci_dev *dev); |
1da177e4 | 930 | void pci_clear_mwi(struct pci_dev *dev); |
a04ce0ff | 931 | void pci_intx(struct pci_dev *dev, int enable); |
a2e27787 JK |
932 | bool pci_intx_mask_supported(struct pci_dev *dev); |
933 | bool pci_check_and_mask_intx(struct pci_dev *dev); | |
934 | bool pci_check_and_unmask_intx(struct pci_dev *dev); | |
f5f2b131 | 935 | void pci_msi_off(struct pci_dev *dev); |
4d57cdfa | 936 | int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); |
59fc67de | 937 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
157e876f | 938 | int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask); |
3775a209 | 939 | int pci_wait_for_pending_transaction(struct pci_dev *dev); |
d556ad4b PO |
940 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
941 | int pcix_get_mmrbc(struct pci_dev *dev); | |
942 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); | |
2637e5b5 | 943 | int pcie_get_readrq(struct pci_dev *dev); |
d556ad4b | 944 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
b03e7495 JM |
945 | int pcie_get_mps(struct pci_dev *dev); |
946 | int pcie_set_mps(struct pci_dev *dev, int mps); | |
81377c8d JK |
947 | int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, |
948 | enum pcie_link_width *width); | |
8c1c699f | 949 | int __pci_reset_function(struct pci_dev *dev); |
a96d627a | 950 | int __pci_reset_function_locked(struct pci_dev *dev); |
8dd7f803 | 951 | int pci_reset_function(struct pci_dev *dev); |
61cf16d8 | 952 | int pci_try_reset_function(struct pci_dev *dev); |
9a3d2b9b | 953 | int pci_probe_reset_slot(struct pci_slot *slot); |
090a3c53 | 954 | int pci_reset_slot(struct pci_slot *slot); |
61cf16d8 | 955 | int pci_try_reset_slot(struct pci_slot *slot); |
9a3d2b9b | 956 | int pci_probe_reset_bus(struct pci_bus *bus); |
090a3c53 | 957 | int pci_reset_bus(struct pci_bus *bus); |
61cf16d8 | 958 | int pci_try_reset_bus(struct pci_bus *bus); |
64e8674f | 959 | void pci_reset_bridge_secondary_bus(struct pci_dev *dev); |
14add80b | 960 | void pci_update_resource(struct pci_dev *dev, int resno); |
4a7fb636 | 961 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
2bbc6942 | 962 | int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
c87deff7 | 963 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
8496e85c | 964 | bool pci_device_is_present(struct pci_dev *pdev); |
1da177e4 LT |
965 | |
966 | /* ROM control related routines */ | |
e416de5e AC |
967 | int pci_enable_rom(struct pci_dev *pdev); |
968 | void pci_disable_rom(struct pci_dev *pdev); | |
144a50ea | 969 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 | 970 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
97c44836 | 971 | size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); |
fffe01f7 | 972 | void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 LT |
973 | |
974 | /* Power management related routines */ | |
975 | int pci_save_state(struct pci_dev *dev); | |
1d3c16a8 | 976 | void pci_restore_state(struct pci_dev *dev); |
ffbdd3f7 | 977 | struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
ffbdd3f7 AW |
978 | int pci_load_and_free_saved_state(struct pci_dev *dev, |
979 | struct pci_saved_state **state); | |
fd0f7f73 AW |
980 | struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap); |
981 | struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev, | |
982 | u16 cap); | |
983 | int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size); | |
984 | int pci_add_ext_cap_save_buffer(struct pci_dev *dev, | |
985 | u16 cap, unsigned int size); | |
0e5dd46b | 986 | int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
9c8550ee LT |
987 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
988 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); | |
e5899e1b | 989 | bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
5a6c9b60 | 990 | void pci_pme_active(struct pci_dev *dev, bool enable); |
6cbf8214 RW |
991 | int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
992 | bool runtime, bool enable); | |
0235c4fc | 993 | int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
404cc2d8 RW |
994 | int pci_prepare_to_sleep(struct pci_dev *dev); |
995 | int pci_back_from_sleep(struct pci_dev *dev); | |
b67ea761 | 996 | bool pci_dev_run_wake(struct pci_dev *dev); |
bf4d2908 | 997 | bool pci_check_pme_status(struct pci_dev *dev); |
bf4d2908 | 998 | void pci_pme_wakeup_bus(struct pci_bus *bus); |
1da177e4 | 999 | |
6cbf8214 RW |
1000 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1001 | bool enable) | |
1002 | { | |
1003 | return __pci_enable_wake(dev, state, false, enable); | |
1004 | } | |
1da177e4 | 1005 | |
425c1b22 AW |
1006 | /* PCI Virtual Channel */ |
1007 | int pci_save_vc_state(struct pci_dev *dev); | |
1008 | void pci_restore_vc_state(struct pci_dev *dev); | |
1009 | void pci_allocate_vc_save_buffers(struct pci_dev *dev); | |
51c2e0a7 | 1010 | |
bb209c82 BH |
1011 | /* For use by arch with custom probe code */ |
1012 | void set_pcie_port_type(struct pci_dev *pdev); | |
1013 | void set_pcie_hotplug_bridge(struct pci_dev *pdev); | |
1014 | ||
ce5ccdef | 1015 | /* Functions for PCI Hotplug drivers to use */ |
05cca6e5 | 1016 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
2f320521 | 1017 | unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
3ed4fd96 | 1018 | unsigned int pci_rescan_bus(struct pci_bus *bus); |
9d16947b RW |
1019 | void pci_lock_rescan_remove(void); |
1020 | void pci_unlock_rescan_remove(void); | |
ce5ccdef | 1021 | |
287d19ce SH |
1022 | /* Vital product data routines */ |
1023 | ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); | |
1024 | ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); | |
1025 | ||
1da177e4 | 1026 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
925845bd | 1027 | resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
ea741551 | 1028 | void pci_bus_assign_resources(const struct pci_bus *bus); |
1da177e4 LT |
1029 | void pci_bus_size_bridges(struct pci_bus *bus); |
1030 | int pci_claim_resource(struct pci_dev *, int); | |
1031 | void pci_assign_unassigned_resources(void); | |
6841ec68 | 1032 | void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
17787940 | 1033 | void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
39772038 | 1034 | void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); |
1da177e4 | 1035 | void pdev_enable_device(struct pci_dev *); |
842de40d | 1036 | int pci_enable_resources(struct pci_dev *, int mask); |
1da177e4 | 1037 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
d5341942 | 1038 | int (*)(const struct pci_dev *, u8, u8)); |
1da177e4 | 1039 | #define HAVE_PCI_REQ_REGIONS 2 |
4a7fb636 | 1040 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
e8de1481 | 1041 | int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
1da177e4 | 1042 | void pci_release_regions(struct pci_dev *); |
4a7fb636 | 1043 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
e8de1481 | 1044 | int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
1da177e4 | 1045 | void pci_release_region(struct pci_dev *, int); |
c87deff7 | 1046 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
e8de1481 | 1047 | int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
c87deff7 | 1048 | void pci_release_selected_regions(struct pci_dev *, int); |
1da177e4 LT |
1049 | |
1050 | /* drivers/pci/bus.c */ | |
fe830ef6 JL |
1051 | struct pci_bus *pci_bus_get(struct pci_bus *bus); |
1052 | void pci_bus_put(struct pci_bus *bus); | |
45ca9e97 | 1053 | void pci_add_resource(struct list_head *resources, struct resource *res); |
0efd5aab BH |
1054 | void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
1055 | resource_size_t offset); | |
45ca9e97 | 1056 | void pci_free_resource_list(struct list_head *resources); |
2fe2abf8 BH |
1057 | void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); |
1058 | struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); | |
1059 | void pci_bus_remove_resources(struct pci_bus *bus); | |
1060 | ||
89a74ecc | 1061 | #define pci_bus_for_each_resource(bus, res, i) \ |
2fe2abf8 BH |
1062 | for (i = 0; \ |
1063 | (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ | |
1064 | i++) | |
89a74ecc | 1065 | |
4a7fb636 AM |
1066 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
1067 | struct resource *res, resource_size_t size, | |
1068 | resource_size_t align, resource_size_t min, | |
1069 | unsigned int type_mask, | |
3b7a17fc DB |
1070 | resource_size_t (*alignf)(void *, |
1071 | const struct resource *, | |
b26b2d49 DB |
1072 | resource_size_t, |
1073 | resource_size_t), | |
4a7fb636 | 1074 | void *alignf_data); |
1da177e4 | 1075 | |
06cf56e4 BH |
1076 | static inline dma_addr_t pci_bus_address(struct pci_dev *pdev, int bar) |
1077 | { | |
1078 | struct pci_bus_region region; | |
1079 | ||
1080 | pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]); | |
1081 | return region.start; | |
1082 | } | |
1083 | ||
863b18f4 | 1084 | /* Proper probing supporting hot-pluggable devices */ |
725522b5 GKH |
1085 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
1086 | const char *mod_name); | |
bba81165 AM |
1087 | |
1088 | /* | |
1089 | * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
1090 | */ | |
1091 | #define pci_register_driver(driver) \ | |
1092 | __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
863b18f4 | 1093 | |
05cca6e5 | 1094 | void pci_unregister_driver(struct pci_driver *dev); |
aad4f400 GKH |
1095 | |
1096 | /** | |
1097 | * module_pci_driver() - Helper macro for registering a PCI driver | |
1098 | * @__pci_driver: pci_driver struct | |
1099 | * | |
1100 | * Helper macro for PCI drivers which do not do anything special in module | |
1101 | * init/exit. This eliminates a lot of boilerplate. Each module may only | |
1102 | * use this macro once, and calling it replaces module_init() and module_exit() | |
1103 | */ | |
1104 | #define module_pci_driver(__pci_driver) \ | |
1105 | module_driver(__pci_driver, pci_register_driver, \ | |
1106 | pci_unregister_driver) | |
1107 | ||
05cca6e5 | 1108 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
9dba910e TH |
1109 | int pci_add_dynid(struct pci_driver *drv, |
1110 | unsigned int vendor, unsigned int device, | |
1111 | unsigned int subvendor, unsigned int subdevice, | |
1112 | unsigned int class, unsigned int class_mask, | |
1113 | unsigned long driver_data); | |
05cca6e5 GKH |
1114 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
1115 | struct pci_dev *dev); | |
1116 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, | |
1117 | int pass); | |
1da177e4 | 1118 | |
70298c6e | 1119 | void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
cecf4864 | 1120 | void *userdata); |
ac7dc65a | 1121 | int pci_cfg_space_size(struct pci_dev *dev); |
05cca6e5 | 1122 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
e2444273 | 1123 | void pci_setup_bridge(struct pci_bus *bus); |
ac5ad93e GS |
1124 | resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
1125 | unsigned long type); | |
cecf4864 | 1126 | |
3448a19d DA |
1127 | #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
1128 | #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) | |
1129 | ||
deb2d2ec | 1130 | int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
3448a19d | 1131 | unsigned int command_bits, u32 flags); |
1da177e4 LT |
1132 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
1133 | ||
f41b1771 | 1134 | #include <linux/pci-dma.h> |
1da177e4 LT |
1135 | #include <linux/dmapool.h> |
1136 | ||
1137 | #define pci_pool dma_pool | |
1138 | #define pci_pool_create(name, pdev, size, align, allocation) \ | |
1139 | dma_pool_create(name, &pdev->dev, size, align, allocation) | |
1140 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) | |
1141 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) | |
1142 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) | |
1143 | ||
e24c2d96 DM |
1144 | enum pci_dma_burst_strategy { |
1145 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, | |
1146 | strategy_parameter is N/A */ | |
1147 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter | |
1148 | byte boundaries */ | |
1149 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of | |
1150 | strategy_parameter byte boundaries */ | |
1151 | }; | |
1152 | ||
1da177e4 | 1153 | struct msix_entry { |
16dbef4a | 1154 | u32 vector; /* kernel uses to write allocated vector */ |
1da177e4 LT |
1155 | u16 entry; /* driver uses to specify entry, OS writes */ |
1156 | }; | |
1157 | ||
0366f8f7 | 1158 | |
4c859804 BH |
1159 | #ifdef CONFIG_PCI_MSI |
1160 | int pci_msi_vec_count(struct pci_dev *dev); | |
1161 | int pci_enable_msi_block(struct pci_dev *dev, int nvec); | |
f39d5b72 BH |
1162 | void pci_msi_shutdown(struct pci_dev *dev); |
1163 | void pci_disable_msi(struct pci_dev *dev); | |
4c859804 | 1164 | int pci_msix_vec_count(struct pci_dev *dev); |
f39d5b72 BH |
1165 | int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec); |
1166 | void pci_msix_shutdown(struct pci_dev *dev); | |
1167 | void pci_disable_msix(struct pci_dev *dev); | |
1168 | void msi_remove_pci_irq_vectors(struct pci_dev *dev); | |
1169 | void pci_restore_msi_state(struct pci_dev *dev); | |
1170 | int pci_msi_enabled(void); | |
4c859804 BH |
1171 | int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec); |
1172 | int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, | |
1173 | int minvec, int maxvec); | |
1174 | #else | |
2ee546c4 | 1175 | static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
52179dc9 | 1176 | static inline int pci_enable_msi_block(struct pci_dev *dev, int nvec) |
2ee546c4 BH |
1177 | { return -ENOSYS; } |
1178 | static inline void pci_msi_shutdown(struct pci_dev *dev) { } | |
1179 | static inline void pci_disable_msi(struct pci_dev *dev) { } | |
1180 | static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; } | |
05cca6e5 GKH |
1181 | static inline int pci_enable_msix(struct pci_dev *dev, |
1182 | struct msix_entry *entries, int nvec) | |
2ee546c4 BH |
1183 | { return -ENOSYS; } |
1184 | static inline void pci_msix_shutdown(struct pci_dev *dev) { } | |
1185 | static inline void pci_disable_msix(struct pci_dev *dev) { } | |
1186 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) { } | |
1187 | static inline void pci_restore_msi_state(struct pci_dev *dev) { } | |
1188 | static inline int pci_msi_enabled(void) { return 0; } | |
302a2523 AG |
1189 | static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec, |
1190 | int maxvec) | |
2ee546c4 | 1191 | { return -ENOSYS; } |
302a2523 AG |
1192 | static inline int pci_enable_msix_range(struct pci_dev *dev, |
1193 | struct msix_entry *entries, int minvec, int maxvec) | |
2ee546c4 | 1194 | { return -ENOSYS; } |
1da177e4 LT |
1195 | #endif |
1196 | ||
ab0724ff | 1197 | #ifdef CONFIG_PCIEPORTBUS |
415e12b2 RW |
1198 | extern bool pcie_ports_disabled; |
1199 | extern bool pcie_ports_auto; | |
ab0724ff MT |
1200 | #else |
1201 | #define pcie_ports_disabled true | |
1202 | #define pcie_ports_auto false | |
1203 | #endif | |
415e12b2 | 1204 | |
4c859804 | 1205 | #ifdef CONFIG_PCIEASPM |
f39d5b72 | 1206 | bool pcie_aspm_support_enabled(void); |
4c859804 BH |
1207 | #else |
1208 | static inline bool pcie_aspm_support_enabled(void) { return false; } | |
3e1b1600 AP |
1209 | #endif |
1210 | ||
415e12b2 RW |
1211 | #ifdef CONFIG_PCIEAER |
1212 | void pci_no_aer(void); | |
1213 | bool pci_aer_available(void); | |
1214 | #else | |
1215 | static inline void pci_no_aer(void) { } | |
1216 | static inline bool pci_aer_available(void) { return false; } | |
1217 | #endif | |
1218 | ||
4c859804 | 1219 | #ifdef CONFIG_PCIE_ECRC |
f39d5b72 BH |
1220 | void pcie_set_ecrc_checking(struct pci_dev *dev); |
1221 | void pcie_ecrc_get_policy(char *str); | |
4c859804 | 1222 | #else |
2ee546c4 BH |
1223 | static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } |
1224 | static inline void pcie_ecrc_get_policy(char *str) { } | |
43c16408 AP |
1225 | #endif |
1226 | ||
1c8d7b0a MW |
1227 | #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) |
1228 | ||
8b955b0d | 1229 | #ifdef CONFIG_HT_IRQ |
8b955b0d EB |
1230 | /* The functions a driver should call */ |
1231 | int ht_create_irq(struct pci_dev *dev, int idx); | |
1232 | void ht_destroy_irq(unsigned int irq); | |
8b955b0d EB |
1233 | #endif /* CONFIG_HT_IRQ */ |
1234 | ||
f39d5b72 BH |
1235 | void pci_cfg_access_lock(struct pci_dev *dev); |
1236 | bool pci_cfg_access_trylock(struct pci_dev *dev); | |
1237 | void pci_cfg_access_unlock(struct pci_dev *dev); | |
e04b0ea2 | 1238 | |
4352dfd5 GKH |
1239 | /* |
1240 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), | |
f7625980 | 1241 | * a PCI domain is defined to be a set of PCI buses which share |
4352dfd5 GKH |
1242 | * configuration space. |
1243 | */ | |
32a2eea7 JG |
1244 | #ifdef CONFIG_PCI_DOMAINS |
1245 | extern int pci_domains_supported; | |
1246 | #else | |
1247 | enum { pci_domains_supported = 0 }; | |
2ee546c4 BH |
1248 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1249 | static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } | |
32a2eea7 | 1250 | #endif /* CONFIG_PCI_DOMAINS */ |
1da177e4 | 1251 | |
95a8b6ef MT |
1252 | /* some architectures require additional setup to direct VGA traffic */ |
1253 | typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, | |
3448a19d | 1254 | unsigned int command_bits, u32 flags); |
f39d5b72 | 1255 | void pci_register_set_vga_state(arch_set_vga_state_t func); |
95a8b6ef | 1256 | |
4352dfd5 | 1257 | #else /* CONFIG_PCI is not enabled */ |
1da177e4 LT |
1258 | |
1259 | /* | |
1260 | * If the system does not have PCI, clearly these return errors. Define | |
1261 | * these as simple inline functions to avoid hair in drivers. | |
1262 | */ | |
1263 | ||
05cca6e5 GKH |
1264 | #define _PCI_NOP(o, s, t) \ |
1265 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | |
1266 | int where, t val) \ | |
1da177e4 | 1267 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
05cca6e5 GKH |
1268 | |
1269 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | |
1270 | _PCI_NOP(o, word, u16 x) \ | |
1271 | _PCI_NOP(o, dword, u32 x) | |
1da177e4 LT |
1272 | _PCI_NOP_ALL(read, *) |
1273 | _PCI_NOP_ALL(write,) | |
1274 | ||
d42552c3 | 1275 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
05cca6e5 GKH |
1276 | unsigned int device, |
1277 | struct pci_dev *from) | |
2ee546c4 | 1278 | { return NULL; } |
d42552c3 | 1279 | |
05cca6e5 GKH |
1280 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
1281 | unsigned int device, | |
1282 | unsigned int ss_vendor, | |
1283 | unsigned int ss_device, | |
b08508c4 | 1284 | struct pci_dev *from) |
2ee546c4 | 1285 | { return NULL; } |
1da177e4 | 1286 | |
05cca6e5 GKH |
1287 | static inline struct pci_dev *pci_get_class(unsigned int class, |
1288 | struct pci_dev *from) | |
2ee546c4 | 1289 | { return NULL; } |
1da177e4 LT |
1290 | |
1291 | #define pci_dev_present(ids) (0) | |
ed4aaadb | 1292 | #define no_pci_devices() (1) |
1da177e4 LT |
1293 | #define pci_dev_put(dev) do { } while (0) |
1294 | ||
2ee546c4 BH |
1295 | static inline void pci_set_master(struct pci_dev *dev) { } |
1296 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } | |
1297 | static inline void pci_disable_device(struct pci_dev *dev) { } | |
05cca6e5 | 1298 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) |
2ee546c4 | 1299 | { return -EIO; } |
80be0385 | 1300 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) |
2ee546c4 | 1301 | { return -EIO; } |
4d57cdfa FT |
1302 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
1303 | unsigned int size) | |
2ee546c4 | 1304 | { return -EIO; } |
59fc67de FT |
1305 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
1306 | unsigned long mask) | |
2ee546c4 | 1307 | { return -EIO; } |
05cca6e5 | 1308 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
2ee546c4 | 1309 | { return -EBUSY; } |
05cca6e5 GKH |
1310 | static inline int __pci_register_driver(struct pci_driver *drv, |
1311 | struct module *owner) | |
2ee546c4 | 1312 | { return 0; } |
05cca6e5 | 1313 | static inline int pci_register_driver(struct pci_driver *drv) |
2ee546c4 BH |
1314 | { return 0; } |
1315 | static inline void pci_unregister_driver(struct pci_driver *drv) { } | |
05cca6e5 | 1316 | static inline int pci_find_capability(struct pci_dev *dev, int cap) |
2ee546c4 | 1317 | { return 0; } |
05cca6e5 GKH |
1318 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
1319 | int cap) | |
2ee546c4 | 1320 | { return 0; } |
05cca6e5 | 1321 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
2ee546c4 | 1322 | { return 0; } |
05cca6e5 | 1323 | |
1da177e4 | 1324 | /* Power management related routines */ |
2ee546c4 BH |
1325 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
1326 | static inline void pci_restore_state(struct pci_dev *dev) { } | |
05cca6e5 | 1327 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
2ee546c4 | 1328 | { return 0; } |
3449248c | 1329 | static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
2ee546c4 | 1330 | { return 0; } |
05cca6e5 GKH |
1331 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
1332 | pm_message_t state) | |
2ee546c4 | 1333 | { return PCI_D0; } |
05cca6e5 GKH |
1334 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1335 | int enable) | |
2ee546c4 | 1336 | { return 0; } |
48a92a81 | 1337 | |
05cca6e5 | 1338 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
2ee546c4 BH |
1339 | { return -EIO; } |
1340 | static inline void pci_release_regions(struct pci_dev *dev) { } | |
0da0ead9 | 1341 | |
a46e8126 KG |
1342 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
1343 | ||
2ee546c4 | 1344 | static inline void pci_block_cfg_access(struct pci_dev *dev) { } |
fb51ccbf JK |
1345 | static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
1346 | { return 0; } | |
2ee546c4 | 1347 | static inline void pci_unblock_cfg_access(struct pci_dev *dev) { } |
e04b0ea2 | 1348 | |
d80d0217 RD |
1349 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
1350 | { return NULL; } | |
d80d0217 RD |
1351 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
1352 | unsigned int devfn) | |
1353 | { return NULL; } | |
d80d0217 RD |
1354 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
1355 | unsigned int devfn) | |
1356 | { return NULL; } | |
1357 | ||
2ee546c4 BH |
1358 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1359 | static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } | |
12ea6cad | 1360 | |
fb8a0d9d WM |
1361 | #define dev_is_pci(d) (false) |
1362 | #define dev_is_pf(d) (false) | |
1363 | #define dev_num_vf(d) (0) | |
4352dfd5 | 1364 | #endif /* CONFIG_PCI */ |
1da177e4 | 1365 | |
4352dfd5 GKH |
1366 | /* Include architecture-dependent settings and functions */ |
1367 | ||
1368 | #include <asm/pci.h> | |
1da177e4 LT |
1369 | |
1370 | /* these helpers provide future and backwards compatibility | |
1371 | * for accessing popular PCI BAR info */ | |
05cca6e5 GKH |
1372 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
1373 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) | |
1374 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) | |
1da177e4 | 1375 | #define pci_resource_len(dev,bar) \ |
05cca6e5 GKH |
1376 | ((pci_resource_start((dev), (bar)) == 0 && \ |
1377 | pci_resource_end((dev), (bar)) == \ | |
1378 | pci_resource_start((dev), (bar))) ? 0 : \ | |
1379 | \ | |
1380 | (pci_resource_end((dev), (bar)) - \ | |
1381 | pci_resource_start((dev), (bar)) + 1)) | |
1da177e4 LT |
1382 | |
1383 | /* Similar to the helpers above, these manipulate per-pci_dev | |
1384 | * driver-specific data. They are really just a wrapper around | |
1385 | * the generic device structure functions of these calls. | |
1386 | */ | |
05cca6e5 | 1387 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
1da177e4 LT |
1388 | { |
1389 | return dev_get_drvdata(&pdev->dev); | |
1390 | } | |
1391 | ||
05cca6e5 | 1392 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
1da177e4 LT |
1393 | { |
1394 | dev_set_drvdata(&pdev->dev, data); | |
1395 | } | |
1396 | ||
1397 | /* If you want to know what to call your pci_dev, ask this function. | |
1398 | * Again, it's a wrapper around the generic device. | |
1399 | */ | |
2fc90f61 | 1400 | static inline const char *pci_name(const struct pci_dev *pdev) |
1da177e4 | 1401 | { |
c6c4f070 | 1402 | return dev_name(&pdev->dev); |
1da177e4 LT |
1403 | } |
1404 | ||
2311b1f2 ME |
1405 | |
1406 | /* Some archs don't want to expose struct resource to userland as-is | |
1407 | * in sysfs and /proc | |
1408 | */ | |
1409 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER | |
1410 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
05cca6e5 | 1411 | const struct resource *rsrc, resource_size_t *start, |
e31dd6e4 | 1412 | resource_size_t *end) |
2311b1f2 ME |
1413 | { |
1414 | *start = rsrc->start; | |
1415 | *end = rsrc->end; | |
1416 | } | |
1417 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ | |
1418 | ||
1419 | ||
1da177e4 LT |
1420 | /* |
1421 | * The world is not perfect and supplies us with broken PCI devices. | |
1422 | * For at least a part of these bugs we need a work-around, so both | |
1423 | * generic (drivers/pci/quirks.c) and per-architecture code can define | |
1424 | * fixup hooks to be called for particular buggy devices. | |
1425 | */ | |
1426 | ||
1427 | struct pci_fixup { | |
f4ca5c6a YL |
1428 | u16 vendor; /* You can use PCI_ANY_ID here of course */ |
1429 | u16 device; /* You can use PCI_ANY_ID here of course */ | |
1430 | u32 class; /* You can use PCI_ANY_ID here too */ | |
1431 | unsigned int class_shift; /* should be 0, 8, 16 */ | |
1da177e4 LT |
1432 | void (*hook)(struct pci_dev *dev); |
1433 | }; | |
1434 | ||
1435 | enum pci_fixup_pass { | |
1436 | pci_fixup_early, /* Before probing BARs */ | |
1437 | pci_fixup_header, /* After reading configuration header */ | |
1438 | pci_fixup_final, /* Final phase of device fixups */ | |
1439 | pci_fixup_enable, /* pci_enable_device() time */ | |
e1a2a51e RW |
1440 | pci_fixup_resume, /* pci_device_resume() */ |
1441 | pci_fixup_suspend, /* pci_device_suspend */ | |
1442 | pci_fixup_resume_early, /* pci_device_resume_early() */ | |
1da177e4 LT |
1443 | }; |
1444 | ||
1445 | /* Anonymous variables would be nice... */ | |
f4ca5c6a YL |
1446 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
1447 | class_shift, hook) \ | |
ecf61c78 | 1448 | static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \ |
f4ca5c6a YL |
1449 | __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
1450 | = { vendor, device, class, class_shift, hook }; | |
1451 | ||
1452 | #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ | |
1453 | class_shift, hook) \ | |
1454 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
ecf61c78 | 1455 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1456 | #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \ |
1457 | class_shift, hook) \ | |
1458 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
ecf61c78 | 1459 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1460 | #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ |
1461 | class_shift, hook) \ | |
1462 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
ecf61c78 | 1463 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1464 | #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ |
1465 | class_shift, hook) \ | |
1466 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
ecf61c78 | 1467 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1468 | #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ |
1469 | class_shift, hook) \ | |
1470 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
ecf61c78 | 1471 | resume##hook, vendor, device, class, \ |
f4ca5c6a YL |
1472 | class_shift, hook) |
1473 | #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ | |
1474 | class_shift, hook) \ | |
1475 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
ecf61c78 | 1476 | resume_early##hook, vendor, device, \ |
f4ca5c6a YL |
1477 | class, class_shift, hook) |
1478 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ | |
1479 | class_shift, hook) \ | |
1480 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
ecf61c78 | 1481 | suspend##hook, vendor, device, class, \ |
f4ca5c6a YL |
1482 | class_shift, hook) |
1483 | ||
1da177e4 LT |
1484 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
1485 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
ecf61c78 | 1486 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1487 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
1488 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
ecf61c78 | 1489 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1490 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
1491 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
ecf61c78 | 1492 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1493 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
1494 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
ecf61c78 | 1495 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1597cacb AC |
1496 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
1497 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
ecf61c78 | 1498 | resume##hook, vendor, device, \ |
f4ca5c6a | 1499 | PCI_ANY_ID, 0, hook) |
e1a2a51e RW |
1500 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
1501 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
ecf61c78 | 1502 | resume_early##hook, vendor, device, \ |
f4ca5c6a | 1503 | PCI_ANY_ID, 0, hook) |
e1a2a51e RW |
1504 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
1505 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
ecf61c78 | 1506 | suspend##hook, vendor, device, \ |
f4ca5c6a | 1507 | PCI_ANY_ID, 0, hook) |
1da177e4 | 1508 | |
93177a74 | 1509 | #ifdef CONFIG_PCI_QUIRKS |
1da177e4 | 1510 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
12ea6cad | 1511 | struct pci_dev *pci_get_dma_source(struct pci_dev *dev); |
ad805758 | 1512 | int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); |
93177a74 RW |
1513 | #else |
1514 | static inline void pci_fixup_device(enum pci_fixup_pass pass, | |
2ee546c4 | 1515 | struct pci_dev *dev) { } |
12ea6cad AW |
1516 | static inline struct pci_dev *pci_get_dma_source(struct pci_dev *dev) |
1517 | { | |
1518 | return pci_dev_get(dev); | |
1519 | } | |
ad805758 AW |
1520 | static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, |
1521 | u16 acs_flags) | |
1522 | { | |
1523 | return -ENOTTY; | |
1524 | } | |
93177a74 | 1525 | #endif |
1da177e4 | 1526 | |
05cca6e5 | 1527 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
5ea81769 | 1528 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
05cca6e5 | 1529 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
fb7ebfe4 YL |
1530 | int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
1531 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, | |
916fbfb7 | 1532 | const char *name); |
fb7ebfe4 | 1533 | void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
5ea81769 | 1534 | |
1da177e4 | 1535 | extern int pci_pci_problems; |
236561e5 | 1536 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
1da177e4 LT |
1537 | #define PCIPCI_TRITON 2 |
1538 | #define PCIPCI_NATOMA 4 | |
1539 | #define PCIPCI_VIAETBF 8 | |
1540 | #define PCIPCI_VSFX 16 | |
236561e5 AC |
1541 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
1542 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ | |
1da177e4 | 1543 | |
4516a618 AN |
1544 | extern unsigned long pci_cardbus_io_size; |
1545 | extern unsigned long pci_cardbus_mem_size; | |
15856ad5 | 1546 | extern u8 pci_dfl_cache_line_size; |
ac1aa47b | 1547 | extern u8 pci_cache_line_size; |
4516a618 | 1548 | |
28760489 EB |
1549 | extern unsigned long pci_hotplug_io_size; |
1550 | extern unsigned long pci_hotplug_mem_size; | |
1551 | ||
f7625980 | 1552 | /* Architecture-specific versions may override these (weak) */ |
19792a08 AB |
1553 | int pcibios_add_platform_entries(struct pci_dev *dev); |
1554 | void pcibios_disable_device(struct pci_dev *dev); | |
cfce9fb8 | 1555 | void pcibios_set_master(struct pci_dev *dev); |
19792a08 AB |
1556 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
1557 | enum pcie_reset_state state); | |
eca0d467 | 1558 | int pcibios_add_device(struct pci_dev *dev); |
6ae32c53 | 1559 | void pcibios_release_device(struct pci_dev *dev); |
575e3348 | 1560 | |
699c1985 SO |
1561 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
1562 | extern struct dev_pm_ops pcibios_pm_ops; | |
1563 | #endif | |
1564 | ||
7752d5cf | 1565 | #ifdef CONFIG_PCI_MMCONFIG |
f39d5b72 BH |
1566 | void __init pci_mmcfg_early_init(void); |
1567 | void __init pci_mmcfg_late_init(void); | |
7752d5cf | 1568 | #else |
bb63b421 | 1569 | static inline void pci_mmcfg_early_init(void) { } |
7752d5cf RH |
1570 | static inline void pci_mmcfg_late_init(void) { } |
1571 | #endif | |
1572 | ||
642c92da | 1573 | int pci_ext_cfg_avail(void); |
0ef5f8f6 | 1574 | |
1684f5dd | 1575 | void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
aa42d7c6 | 1576 | |
dd7cc44d | 1577 | #ifdef CONFIG_PCI_IOV |
f39d5b72 BH |
1578 | int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); |
1579 | void pci_disable_sriov(struct pci_dev *dev); | |
1580 | irqreturn_t pci_sriov_migration(struct pci_dev *dev); | |
1581 | int pci_num_vf(struct pci_dev *dev); | |
5a8eb242 | 1582 | int pci_vfs_assigned(struct pci_dev *dev); |
f39d5b72 BH |
1583 | int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
1584 | int pci_sriov_get_totalvfs(struct pci_dev *dev); | |
dd7cc44d YZ |
1585 | #else |
1586 | static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) | |
2ee546c4 BH |
1587 | { return -ENODEV; } |
1588 | static inline void pci_disable_sriov(struct pci_dev *dev) { } | |
74bb1bcc | 1589 | static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev) |
2ee546c4 BH |
1590 | { return IRQ_NONE; } |
1591 | static inline int pci_num_vf(struct pci_dev *dev) { return 0; } | |
5a8eb242 | 1592 | static inline int pci_vfs_assigned(struct pci_dev *dev) |
2ee546c4 | 1593 | { return 0; } |
bff73156 | 1594 | static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
2ee546c4 | 1595 | { return 0; } |
bff73156 | 1596 | static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) |
2ee546c4 | 1597 | { return 0; } |
dd7cc44d YZ |
1598 | #endif |
1599 | ||
c825bc94 | 1600 | #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
f39d5b72 BH |
1601 | void pci_hp_create_module_link(struct pci_slot *pci_slot); |
1602 | void pci_hp_remove_module_link(struct pci_slot *pci_slot); | |
c825bc94 KK |
1603 | #endif |
1604 | ||
d7b7e605 KK |
1605 | /** |
1606 | * pci_pcie_cap - get the saved PCIe capability offset | |
1607 | * @dev: PCI device | |
1608 | * | |
1609 | * PCIe capability offset is calculated at PCI device initialization | |
1610 | * time and saved in the data structure. This function returns saved | |
1611 | * PCIe capability offset. Using this instead of pci_find_capability() | |
1612 | * reduces unnecessary search in the PCI configuration space. If you | |
1613 | * need to calculate PCIe capability offset from raw device for some | |
1614 | * reasons, please use pci_find_capability() instead. | |
1615 | */ | |
1616 | static inline int pci_pcie_cap(struct pci_dev *dev) | |
1617 | { | |
1618 | return dev->pcie_cap; | |
1619 | } | |
1620 | ||
7eb776c4 KK |
1621 | /** |
1622 | * pci_is_pcie - check if the PCI device is PCI Express capable | |
1623 | * @dev: PCI device | |
1624 | * | |
a895c28a | 1625 | * Returns: true if the PCI device is PCI Express capable, false otherwise. |
7eb776c4 KK |
1626 | */ |
1627 | static inline bool pci_is_pcie(struct pci_dev *dev) | |
1628 | { | |
a895c28a | 1629 | return pci_pcie_cap(dev); |
7eb776c4 KK |
1630 | } |
1631 | ||
7c9c003c MS |
1632 | /** |
1633 | * pcie_caps_reg - get the PCIe Capabilities Register | |
1634 | * @dev: PCI device | |
1635 | */ | |
1636 | static inline u16 pcie_caps_reg(const struct pci_dev *dev) | |
1637 | { | |
1638 | return dev->pcie_flags_reg; | |
1639 | } | |
1640 | ||
786e2288 YW |
1641 | /** |
1642 | * pci_pcie_type - get the PCIe device/port type | |
1643 | * @dev: PCI device | |
1644 | */ | |
1645 | static inline int pci_pcie_type(const struct pci_dev *dev) | |
1646 | { | |
1c531d82 | 1647 | return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
786e2288 YW |
1648 | } |
1649 | ||
5d990b62 | 1650 | void pci_request_acs(void); |
ad805758 AW |
1651 | bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
1652 | bool pci_acs_path_enabled(struct pci_dev *start, | |
1653 | struct pci_dev *end, u16 acs_flags); | |
a2ce7662 | 1654 | |
7ad506fa MC |
1655 | #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
1656 | #define PCI_VPD_LRDT_ID(x) (x | PCI_VPD_LRDT) | |
1657 | ||
1658 | /* Large Resource Data Type Tag Item Names */ | |
1659 | #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ | |
1660 | #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ | |
1661 | #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ | |
1662 | ||
1663 | #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) | |
1664 | #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) | |
1665 | #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) | |
1666 | ||
1667 | /* Small Resource Data Type Tag Item Names */ | |
1668 | #define PCI_VPD_STIN_END 0x78 /* End */ | |
1669 | ||
1670 | #define PCI_VPD_SRDT_END PCI_VPD_STIN_END | |
1671 | ||
1672 | #define PCI_VPD_SRDT_TIN_MASK 0x78 | |
1673 | #define PCI_VPD_SRDT_LEN_MASK 0x07 | |
1674 | ||
1675 | #define PCI_VPD_LRDT_TAG_SIZE 3 | |
1676 | #define PCI_VPD_SRDT_TAG_SIZE 1 | |
a2ce7662 | 1677 | |
e1d5bdab MC |
1678 | #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
1679 | ||
4067a854 MC |
1680 | #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
1681 | #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" | |
1682 | #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" | |
d4894f3e | 1683 | #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
4067a854 | 1684 | |
a2ce7662 MC |
1685 | /** |
1686 | * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length | |
1687 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag | |
1688 | * | |
1689 | * Returns the extracted Large Resource Data Type length. | |
1690 | */ | |
1691 | static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) | |
1692 | { | |
1693 | return (u16)lrdt[1] + ((u16)lrdt[2] << 8); | |
1694 | } | |
1695 | ||
7ad506fa MC |
1696 | /** |
1697 | * pci_vpd_srdt_size - Extracts the Small Resource Data Type length | |
1698 | * @lrdt: Pointer to the beginning of the Small Resource Data Type tag | |
1699 | * | |
1700 | * Returns the extracted Small Resource Data Type length. | |
1701 | */ | |
1702 | static inline u8 pci_vpd_srdt_size(const u8 *srdt) | |
1703 | { | |
1704 | return (*srdt) & PCI_VPD_SRDT_LEN_MASK; | |
1705 | } | |
1706 | ||
e1d5bdab MC |
1707 | /** |
1708 | * pci_vpd_info_field_size - Extracts the information field length | |
1709 | * @lrdt: Pointer to the beginning of an information field header | |
1710 | * | |
1711 | * Returns the extracted information field length. | |
1712 | */ | |
1713 | static inline u8 pci_vpd_info_field_size(const u8 *info_field) | |
1714 | { | |
1715 | return info_field[2]; | |
1716 | } | |
1717 | ||
b55ac1b2 MC |
1718 | /** |
1719 | * pci_vpd_find_tag - Locates the Resource Data Type tag provided | |
1720 | * @buf: Pointer to buffered vpd data | |
1721 | * @off: The offset into the buffer at which to begin the search | |
1722 | * @len: The length of the vpd buffer | |
1723 | * @rdt: The Resource Data Type to search for | |
1724 | * | |
1725 | * Returns the index where the Resource Data Type was found or | |
1726 | * -ENOENT otherwise. | |
1727 | */ | |
1728 | int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); | |
1729 | ||
4067a854 MC |
1730 | /** |
1731 | * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD | |
1732 | * @buf: Pointer to buffered vpd data | |
1733 | * @off: The offset into the buffer at which to begin the search | |
1734 | * @len: The length of the buffer area, relative to off, in which to search | |
1735 | * @kw: The keyword to search for | |
1736 | * | |
1737 | * Returns the index where the information field keyword was found or | |
1738 | * -ENOENT otherwise. | |
1739 | */ | |
1740 | int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, | |
1741 | unsigned int len, const char *kw); | |
1742 | ||
98d9f30c BH |
1743 | /* PCI <-> OF binding helpers */ |
1744 | #ifdef CONFIG_OF | |
1745 | struct device_node; | |
f39d5b72 BH |
1746 | void pci_set_of_node(struct pci_dev *dev); |
1747 | void pci_release_of_node(struct pci_dev *dev); | |
1748 | void pci_set_bus_of_node(struct pci_bus *bus); | |
1749 | void pci_release_bus_of_node(struct pci_bus *bus); | |
98d9f30c BH |
1750 | |
1751 | /* Arch may override this (weak) */ | |
723ec4d0 | 1752 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); |
98d9f30c | 1753 | |
3df425f3 JC |
1754 | static inline struct device_node * |
1755 | pci_device_to_OF_node(const struct pci_dev *pdev) | |
64099d98 BH |
1756 | { |
1757 | return pdev ? pdev->dev.of_node : NULL; | |
1758 | } | |
1759 | ||
ef3b4f8c BH |
1760 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
1761 | { | |
1762 | return bus ? bus->dev.of_node : NULL; | |
1763 | } | |
1764 | ||
98d9f30c BH |
1765 | #else /* CONFIG_OF */ |
1766 | static inline void pci_set_of_node(struct pci_dev *dev) { } | |
1767 | static inline void pci_release_of_node(struct pci_dev *dev) { } | |
1768 | static inline void pci_set_bus_of_node(struct pci_bus *bus) { } | |
1769 | static inline void pci_release_bus_of_node(struct pci_bus *bus) { } | |
1770 | #endif /* CONFIG_OF */ | |
1771 | ||
eb740b5f GS |
1772 | #ifdef CONFIG_EEH |
1773 | static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) | |
1774 | { | |
1775 | return pdev->dev.archdata.edev; | |
1776 | } | |
1777 | #endif | |
1778 | ||
166e9278 OBC |
1779 | /** |
1780 | * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device | |
1781 | * @pdev: the PCI device | |
1782 | * | |
1783 | * if the device is PCIE, return NULL | |
1784 | * if the device isn't connected to a PCIe bridge (that is its parent is a | |
1785 | * legacy PCI bridge and the bridge is directly connected to bus 0), return its | |
1786 | * parent | |
1787 | */ | |
1788 | struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); | |
1789 | ||
1da177e4 | 1790 | #endif /* LINUX_PCI_H */ |