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> |
607ca46e | 32 | #include <uapi/linux/pci.h> |
1da177e4 | 33 | |
7e7a43c3 AB |
34 | #include <linux/pci_ids.h> |
35 | ||
85467136 SK |
36 | /* |
37 | * The PCI interface treats multi-function devices as independent | |
38 | * devices. The slot/function address of each device is encoded | |
39 | * in a single byte as follows: | |
40 | * | |
41 | * 7:3 = slot | |
42 | * 2:0 = function | |
f7625980 BH |
43 | * |
44 | * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h. | |
85467136 | 45 | * In the interest of not exposing interfaces to user-space unnecessarily, |
f7625980 | 46 | * the following kernel-only defines are being added here. |
85467136 SK |
47 | */ |
48 | #define PCI_DEVID(bus, devfn) ((((u16)bus) << 8) | devfn) | |
49 | /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */ | |
50 | #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff) | |
51 | ||
f46753c5 AC |
52 | /* pci_slot represents a physical slot */ |
53 | struct pci_slot { | |
54 | struct pci_bus *bus; /* The bus this slot is on */ | |
55 | struct list_head list; /* node in list of slots on this bus */ | |
56 | struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ | |
57 | unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ | |
58 | struct kobject kobj; | |
59 | }; | |
60 | ||
0ad772ec AC |
61 | static inline const char *pci_slot_name(const struct pci_slot *slot) |
62 | { | |
63 | return kobject_name(&slot->kobj); | |
64 | } | |
65 | ||
1da177e4 LT |
66 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
67 | enum pci_mmap_state { | |
68 | pci_mmap_io, | |
69 | pci_mmap_mem | |
70 | }; | |
71 | ||
72 | /* This defines the direction arg to the DMA mapping routines. */ | |
73 | #define PCI_DMA_BIDIRECTIONAL 0 | |
74 | #define PCI_DMA_TODEVICE 1 | |
75 | #define PCI_DMA_FROMDEVICE 2 | |
76 | #define PCI_DMA_NONE 3 | |
77 | ||
fde09c6d YZ |
78 | /* |
79 | * For PCI devices, the region numbers are assigned this way: | |
80 | */ | |
81 | enum { | |
82 | /* #0-5: standard PCI resources */ | |
83 | PCI_STD_RESOURCES, | |
84 | PCI_STD_RESOURCE_END = 5, | |
85 | ||
86 | /* #6: expansion ROM resource */ | |
87 | PCI_ROM_RESOURCE, | |
88 | ||
d1b054da YZ |
89 | /* device specific resources */ |
90 | #ifdef CONFIG_PCI_IOV | |
91 | PCI_IOV_RESOURCES, | |
92 | PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, | |
93 | #endif | |
94 | ||
fde09c6d YZ |
95 | /* resources assigned to buses behind the bridge */ |
96 | #define PCI_BRIDGE_RESOURCE_NUM 4 | |
97 | ||
98 | PCI_BRIDGE_RESOURCES, | |
99 | PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + | |
100 | PCI_BRIDGE_RESOURCE_NUM - 1, | |
101 | ||
102 | /* total resources associated with a PCI device */ | |
103 | PCI_NUM_RESOURCES, | |
104 | ||
105 | /* preserve this for compatibility */ | |
cda57bf9 | 106 | DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES, |
fde09c6d | 107 | }; |
1da177e4 LT |
108 | |
109 | typedef int __bitwise pci_power_t; | |
110 | ||
4352dfd5 GKH |
111 | #define PCI_D0 ((pci_power_t __force) 0) |
112 | #define PCI_D1 ((pci_power_t __force) 1) | |
113 | #define PCI_D2 ((pci_power_t __force) 2) | |
1da177e4 LT |
114 | #define PCI_D3hot ((pci_power_t __force) 3) |
115 | #define PCI_D3cold ((pci_power_t __force) 4) | |
3fe9d19f | 116 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
438510f6 | 117 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
1da177e4 | 118 | |
00240c38 AS |
119 | /* Remember to update this when the list above changes! */ |
120 | extern const char *pci_power_names[]; | |
121 | ||
122 | static inline const char *pci_power_name(pci_power_t state) | |
123 | { | |
124 | return pci_power_names[1 + (int) state]; | |
125 | } | |
126 | ||
448bd857 HY |
127 | #define PCI_PM_D2_DELAY 200 |
128 | #define PCI_PM_D3_WAIT 10 | |
129 | #define PCI_PM_D3COLD_WAIT 100 | |
130 | #define PCI_PM_BUS_WAIT 50 | |
aa8c6c93 | 131 | |
392a1ce7 | 132 | /** The pci_channel state describes connectivity between the CPU and |
133 | * the pci device. If some PCI bus between here and the pci device | |
134 | * has crashed or locked up, this info is reflected here. | |
135 | */ | |
136 | typedef unsigned int __bitwise pci_channel_state_t; | |
137 | ||
138 | enum pci_channel_state { | |
139 | /* I/O channel is in normal state */ | |
140 | pci_channel_io_normal = (__force pci_channel_state_t) 1, | |
141 | ||
142 | /* I/O to channel is blocked */ | |
143 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, | |
144 | ||
145 | /* PCI card is dead */ | |
146 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, | |
147 | }; | |
148 | ||
f7bdd12d BK |
149 | typedef unsigned int __bitwise pcie_reset_state_t; |
150 | ||
151 | enum pcie_reset_state { | |
152 | /* Reset is NOT asserted (Use to deassert reset) */ | |
153 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, | |
154 | ||
f7625980 | 155 | /* Use #PERST to reset PCIe device */ |
f7bdd12d BK |
156 | pcie_warm_reset = (__force pcie_reset_state_t) 2, |
157 | ||
f7625980 | 158 | /* Use PCIe Hot Reset to reset device */ |
f7bdd12d BK |
159 | pcie_hot_reset = (__force pcie_reset_state_t) 3 |
160 | }; | |
161 | ||
ba698ad4 DM |
162 | typedef unsigned short __bitwise pci_dev_flags_t; |
163 | enum pci_dev_flags { | |
164 | /* INTX_DISABLE in PCI_COMMAND register disables MSI | |
165 | * generation too. | |
166 | */ | |
167 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, | |
979b1791 AC |
168 | /* Device configuration is irrevocably lost if disabled into D3 */ |
169 | PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, | |
6777829c GR |
170 | /* Provide indication device is assigned by a Virtual Machine Manager */ |
171 | PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) 4, | |
5757a769 AW |
172 | /* Flag for quirk use to store if quirk-specific ACS is enabled */ |
173 | PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) 8, | |
ba698ad4 DM |
174 | }; |
175 | ||
e1d3a908 SA |
176 | enum pci_irq_reroute_variant { |
177 | INTEL_IRQ_REROUTE_VARIANT = 1, | |
178 | MAX_IRQ_REROUTE_VARIANTS = 3 | |
179 | }; | |
180 | ||
6e325a62 MT |
181 | typedef unsigned short __bitwise pci_bus_flags_t; |
182 | enum pci_bus_flags { | |
d556ad4b PO |
183 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
184 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, | |
6e325a62 MT |
185 | }; |
186 | ||
59da381e JK |
187 | /* These values come from the PCI Express Spec */ |
188 | enum pcie_link_width { | |
189 | PCIE_LNK_WIDTH_RESRV = 0x00, | |
190 | PCIE_LNK_X1 = 0x01, | |
191 | PCIE_LNK_X2 = 0x02, | |
192 | PCIE_LNK_X4 = 0x04, | |
193 | PCIE_LNK_X8 = 0x08, | |
194 | PCIE_LNK_X12 = 0x0C, | |
195 | PCIE_LNK_X16 = 0x10, | |
196 | PCIE_LNK_X32 = 0x20, | |
197 | PCIE_LNK_WIDTH_UNKNOWN = 0xFF, | |
198 | }; | |
199 | ||
536c8cb4 MW |
200 | /* Based on the PCI Hotplug Spec, but some values are made up by us */ |
201 | enum pci_bus_speed { | |
202 | PCI_SPEED_33MHz = 0x00, | |
203 | PCI_SPEED_66MHz = 0x01, | |
204 | PCI_SPEED_66MHz_PCIX = 0x02, | |
205 | PCI_SPEED_100MHz_PCIX = 0x03, | |
206 | PCI_SPEED_133MHz_PCIX = 0x04, | |
207 | PCI_SPEED_66MHz_PCIX_ECC = 0x05, | |
208 | PCI_SPEED_100MHz_PCIX_ECC = 0x06, | |
209 | PCI_SPEED_133MHz_PCIX_ECC = 0x07, | |
210 | PCI_SPEED_66MHz_PCIX_266 = 0x09, | |
211 | PCI_SPEED_100MHz_PCIX_266 = 0x0a, | |
212 | PCI_SPEED_133MHz_PCIX_266 = 0x0b, | |
45b4cdd5 MW |
213 | AGP_UNKNOWN = 0x0c, |
214 | AGP_1X = 0x0d, | |
215 | AGP_2X = 0x0e, | |
216 | AGP_4X = 0x0f, | |
217 | AGP_8X = 0x10, | |
536c8cb4 MW |
218 | PCI_SPEED_66MHz_PCIX_533 = 0x11, |
219 | PCI_SPEED_100MHz_PCIX_533 = 0x12, | |
220 | PCI_SPEED_133MHz_PCIX_533 = 0x13, | |
221 | PCIE_SPEED_2_5GT = 0x14, | |
222 | PCIE_SPEED_5_0GT = 0x15, | |
9dfd97fe | 223 | PCIE_SPEED_8_0GT = 0x16, |
536c8cb4 MW |
224 | PCI_SPEED_UNKNOWN = 0xff, |
225 | }; | |
226 | ||
24a4742f | 227 | struct pci_cap_saved_data { |
fd0f7f73 AW |
228 | u16 cap_nr; |
229 | bool cap_extended; | |
24a4742f | 230 | unsigned int size; |
41017f0c SL |
231 | u32 data[0]; |
232 | }; | |
233 | ||
24a4742f AW |
234 | struct pci_cap_saved_state { |
235 | struct hlist_node next; | |
236 | struct pci_cap_saved_data cap; | |
237 | }; | |
238 | ||
7d715a6c | 239 | struct pcie_link_state; |
ee69439c | 240 | struct pci_vpd; |
d1b054da | 241 | struct pci_sriov; |
302b4215 | 242 | struct pci_ats; |
ee69439c | 243 | |
1da177e4 LT |
244 | /* |
245 | * The pci_dev structure is used to describe PCI devices. | |
246 | */ | |
247 | struct pci_dev { | |
1da177e4 LT |
248 | struct list_head bus_list; /* node in per-bus list */ |
249 | struct pci_bus *bus; /* bus this device is on */ | |
250 | struct pci_bus *subordinate; /* bus this device bridges to */ | |
251 | ||
252 | void *sysdata; /* hook for sys-specific extension */ | |
253 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ | |
f46753c5 | 254 | struct pci_slot *slot; /* Physical slot this device is in */ |
1da177e4 LT |
255 | |
256 | unsigned int devfn; /* encoded device & function index */ | |
257 | unsigned short vendor; | |
258 | unsigned short device; | |
259 | unsigned short subsystem_vendor; | |
260 | unsigned short subsystem_device; | |
261 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ | |
b8a3a521 | 262 | u8 revision; /* PCI revision, low byte of class word */ |
1da177e4 | 263 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
f7625980 | 264 | u8 pcie_cap; /* PCIe capability offset */ |
e375b561 GS |
265 | u8 msi_cap; /* MSI capability offset */ |
266 | u8 msix_cap; /* MSI-X capability offset */ | |
f7625980 | 267 | u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */ |
1da177e4 | 268 | u8 rom_base_reg; /* which config register controls the ROM */ |
f7625980 BH |
269 | u8 pin; /* which interrupt pin this device uses */ |
270 | u16 pcie_flags_reg; /* cached PCIe Capabilities Register */ | |
1da177e4 LT |
271 | |
272 | struct pci_driver *driver; /* which driver has allocated this device */ | |
273 | u64 dma_mask; /* Mask of the bits of bus address this | |
274 | device implements. Normally this is | |
275 | 0xffffffff. You only need to change | |
276 | this if your device has broken DMA | |
277 | or supports 64-bit transfers. */ | |
278 | ||
4d57cdfa FT |
279 | struct device_dma_parameters dma_parms; |
280 | ||
1da177e4 LT |
281 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
282 | this is D0-D3, D0 being fully functional, | |
283 | and D3 being off. */ | |
703860ed | 284 | u8 pm_cap; /* PM capability offset */ |
337001b6 RW |
285 | unsigned int pme_support:5; /* Bitmask of states from which PME# |
286 | can be generated */ | |
c7f48656 | 287 | unsigned int pme_interrupt:1; |
379021d5 | 288 | unsigned int pme_poll:1; /* Poll device's PME status bit */ |
337001b6 RW |
289 | unsigned int d1_support:1; /* Low power state D1 is supported */ |
290 | unsigned int d2_support:1; /* Low power state D2 is supported */ | |
448bd857 HY |
291 | unsigned int no_d1d2:1; /* D1 and D2 are forbidden */ |
292 | unsigned int no_d3cold:1; /* D3cold is forbidden */ | |
293 | unsigned int d3cold_allowed:1; /* D3cold is allowed by user */ | |
253d2e54 JP |
294 | unsigned int mmio_always_on:1; /* disallow turning off io/mem |
295 | decoding during bar sizing */ | |
e80bb09d | 296 | unsigned int wakeup_prepared:1; |
448bd857 HY |
297 | unsigned int runtime_d3cold:1; /* whether go through runtime |
298 | D3cold, not set for devices | |
299 | powered on/off by the | |
300 | corresponding bridge */ | |
1ae861e6 | 301 | unsigned int d3_delay; /* D3->D0 transition time in ms */ |
448bd857 | 302 | unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ |
1da177e4 | 303 | |
7d715a6c | 304 | #ifdef CONFIG_PCIEASPM |
f7625980 | 305 | struct pcie_link_state *link_state; /* ASPM link state */ |
7d715a6c SL |
306 | #endif |
307 | ||
392a1ce7 | 308 | pci_channel_state_t error_state; /* current connectivity state */ |
1da177e4 LT |
309 | struct device dev; /* Generic device interface */ |
310 | ||
1da177e4 LT |
311 | int cfg_size; /* Size of configuration space */ |
312 | ||
313 | /* | |
314 | * Instead of touching interrupt line and base address registers | |
315 | * directly, use the values stored here. They might be different! | |
316 | */ | |
317 | unsigned int irq; | |
318 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ | |
319 | ||
58d9a38f | 320 | bool match_driver; /* Skip attaching driver */ |
1da177e4 | 321 | /* These fields are used by common fixups */ |
f7625980 | 322 | unsigned int transparent:1; /* Subtractive decode PCI bridge */ |
1da177e4 LT |
323 | unsigned int multifunction:1;/* Part of multi-function device */ |
324 | /* keep track of device state */ | |
8a1bc901 | 325 | unsigned int is_added:1; |
1da177e4 | 326 | unsigned int is_busmaster:1; /* device is busmaster */ |
4602b88d | 327 | unsigned int no_msi:1; /* device may not use msi */ |
fb51ccbf | 328 | unsigned int block_cfg_access:1; /* config space access is blocked */ |
bd8481e1 | 329 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
e1d3a908 | 330 | unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ |
f7625980 | 331 | unsigned int msi_enabled:1; |
99dc804d | 332 | unsigned int msix_enabled:1; |
58c3a727 | 333 | unsigned int ari_enabled:1; /* ARI forwarding */ |
9ac7849e | 334 | unsigned int is_managed:1; |
260d703a | 335 | unsigned int needs_freset:1; /* Dev requires fundamental reset */ |
aa8c6c93 | 336 | unsigned int state_saved:1; |
d1b054da | 337 | unsigned int is_physfn:1; |
dd7cc44d | 338 | unsigned int is_virtfn:1; |
711d5779 | 339 | unsigned int reset_fn:1; |
28760489 | 340 | unsigned int is_hotplug_bridge:1; |
affb72c3 HY |
341 | unsigned int __aer_firmware_first_valid:1; |
342 | unsigned int __aer_firmware_first:1; | |
fbebb9fd | 343 | unsigned int broken_intx_masking:1; |
2b28ae19 | 344 | unsigned int io_window_1k:1; /* Intel P2P bridge 1K I/O windows */ |
ba698ad4 | 345 | pci_dev_flags_t dev_flags; |
bae94d02 | 346 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
4602b88d | 347 | |
1da177e4 | 348 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
41017f0c | 349 | struct hlist_head saved_cap_space; |
1da177e4 LT |
350 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
351 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ | |
352 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ | |
45aec1ae | 353 | struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ |
ded86d8d | 354 | #ifdef CONFIG_PCI_MSI |
4aa9bc95 | 355 | struct list_head msi_list; |
1c51b50c | 356 | const struct attribute_group **msi_irq_groups; |
ded86d8d | 357 | #endif |
94e61088 | 358 | struct pci_vpd *vpd; |
466b3ddf | 359 | #ifdef CONFIG_PCI_ATS |
dd7cc44d YZ |
360 | union { |
361 | struct pci_sriov *sriov; /* SR-IOV capability related */ | |
362 | struct pci_dev *physfn; /* the PF this VF is associated with */ | |
363 | }; | |
302b4215 | 364 | struct pci_ats *ats; /* Address Translation Service */ |
d1b054da | 365 | #endif |
dbd3fc33 | 366 | phys_addr_t rom; /* Physical address of ROM if it's not from the BAR */ |
84c1b80e | 367 | size_t romlen; /* Length of ROM if it's not from the BAR */ |
782a985d | 368 | char *driver_override; /* Driver name to force a match */ |
1da177e4 LT |
369 | }; |
370 | ||
dda56549 Y |
371 | static inline struct pci_dev *pci_physfn(struct pci_dev *dev) |
372 | { | |
373 | #ifdef CONFIG_PCI_IOV | |
374 | if (dev->is_virtfn) | |
375 | dev = dev->physfn; | |
376 | #endif | |
dda56549 Y |
377 | return dev; |
378 | } | |
379 | ||
3c6e6ae7 | 380 | struct pci_dev *pci_alloc_dev(struct pci_bus *bus); |
65891215 | 381 | |
1da177e4 LT |
382 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
383 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) | |
384 | ||
a7369f1f LV |
385 | static inline int pci_channel_offline(struct pci_dev *pdev) |
386 | { | |
387 | return (pdev->error_state != pci_channel_io_normal); | |
388 | } | |
389 | ||
0efd5aab BH |
390 | struct pci_host_bridge_window { |
391 | struct list_head list; | |
392 | struct resource *res; /* host bridge aperture (CPU address) */ | |
393 | resource_size_t offset; /* bus address + offset = CPU address */ | |
394 | }; | |
41017f0c | 395 | |
5a21d70d | 396 | struct pci_host_bridge { |
7b543663 | 397 | struct device dev; |
5a21d70d | 398 | struct pci_bus *bus; /* root bus */ |
0efd5aab | 399 | struct list_head windows; /* pci_host_bridge_windows */ |
4fa2649a YL |
400 | void (*release_fn)(struct pci_host_bridge *); |
401 | void *release_data; | |
5a21d70d | 402 | }; |
41017f0c | 403 | |
7b543663 | 404 | #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) |
4fa2649a YL |
405 | void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |
406 | void (*release_fn)(struct pci_host_bridge *), | |
407 | void *release_data); | |
7b543663 | 408 | |
6c0cc950 RW |
409 | int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge); |
410 | ||
2fe2abf8 BH |
411 | /* |
412 | * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond | |
413 | * to P2P or CardBus bridge windows) go in a table. Additional ones (for | |
414 | * buses below host bridges or subtractive decode bridges) go in the list. | |
415 | * Use pci_bus_for_each_resource() to iterate through all the resources. | |
416 | */ | |
417 | ||
418 | /* | |
419 | * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly | |
420 | * and there's no way to program the bridge with the details of the window. | |
421 | * This does not apply to ACPI _CRS windows, even with the _DEC subtractive- | |
422 | * decode bit set, because they are explicit and can be programmed with _SRS. | |
423 | */ | |
424 | #define PCI_SUBTRACTIVE_DECODE 0x1 | |
425 | ||
426 | struct pci_bus_resource { | |
427 | struct list_head list; | |
428 | struct resource *res; | |
429 | unsigned int flags; | |
430 | }; | |
4352dfd5 GKH |
431 | |
432 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ | |
1da177e4 LT |
433 | |
434 | struct pci_bus { | |
435 | struct list_head node; /* node in list of buses */ | |
436 | struct pci_bus *parent; /* parent bus this bridge is on */ | |
437 | struct list_head children; /* list of child buses */ | |
438 | struct list_head devices; /* list of devices on this bus */ | |
439 | struct pci_dev *self; /* bridge device as seen by parent */ | |
f46753c5 | 440 | struct list_head slots; /* list of slots on this bus */ |
2fe2abf8 BH |
441 | struct resource *resource[PCI_BRIDGE_RESOURCE_NUM]; |
442 | struct list_head resources; /* address space routed to this bus */ | |
92f02430 | 443 | struct resource busn_res; /* bus numbers routed to this bus */ |
1da177e4 LT |
444 | |
445 | struct pci_ops *ops; /* configuration access functions */ | |
0cbdcfcf | 446 | struct msi_chip *msi; /* MSI controller */ |
1da177e4 LT |
447 | void *sysdata; /* hook for sys-specific extension */ |
448 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ | |
449 | ||
450 | unsigned char number; /* bus number */ | |
451 | unsigned char primary; /* number of primary bridge */ | |
3749c51a MW |
452 | unsigned char max_bus_speed; /* enum pci_bus_speed */ |
453 | unsigned char cur_bus_speed; /* enum pci_bus_speed */ | |
1da177e4 LT |
454 | |
455 | char name[48]; | |
456 | ||
457 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ | |
f7625980 | 458 | pci_bus_flags_t bus_flags; /* inherited by child buses */ |
1da177e4 | 459 | struct device *bridge; |
fd7d1ced | 460 | struct device dev; |
1da177e4 LT |
461 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
462 | struct bin_attribute *legacy_mem; /* legacy mem */ | |
cc74d96f | 463 | unsigned int is_added:1; |
1da177e4 LT |
464 | }; |
465 | ||
fd7d1ced | 466 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
1da177e4 | 467 | |
79af72d7 | 468 | /* |
f7625980 | 469 | * Returns true if the PCI bus is root (behind host-PCI bridge), |
79af72d7 | 470 | * false otherwise |
77a0dfcd BH |
471 | * |
472 | * Some code assumes that "bus->self == NULL" means that bus is a root bus. | |
473 | * This is incorrect because "virtual" buses added for SR-IOV (via | |
474 | * virtfn_add_bus()) have "bus->self == NULL" but are not root buses. | |
79af72d7 KK |
475 | */ |
476 | static inline bool pci_is_root_bus(struct pci_bus *pbus) | |
477 | { | |
478 | return !(pbus->parent); | |
479 | } | |
480 | ||
1c86438c YW |
481 | /** |
482 | * pci_is_bridge - check if the PCI device is a bridge | |
483 | * @dev: PCI device | |
484 | * | |
485 | * Return true if the PCI device is bridge whether it has subordinate | |
486 | * or not. | |
487 | */ | |
488 | static inline bool pci_is_bridge(struct pci_dev *dev) | |
489 | { | |
490 | return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE || | |
491 | dev->hdr_type == PCI_HEADER_TYPE_CARDBUS; | |
492 | } | |
493 | ||
c6bde215 BH |
494 | static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev) |
495 | { | |
496 | dev = pci_physfn(dev); | |
497 | if (pci_is_root_bus(dev->bus)) | |
498 | return NULL; | |
499 | ||
500 | return dev->bus->self; | |
501 | } | |
502 | ||
16cf0ebc RW |
503 | #ifdef CONFIG_PCI_MSI |
504 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) | |
505 | { | |
506 | return pci_dev->msi_enabled || pci_dev->msix_enabled; | |
507 | } | |
508 | #else | |
509 | static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } | |
510 | #endif | |
511 | ||
1da177e4 LT |
512 | /* |
513 | * Error values that may be returned by PCI functions. | |
514 | */ | |
515 | #define PCIBIOS_SUCCESSFUL 0x00 | |
516 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 | |
517 | #define PCIBIOS_BAD_VENDOR_ID 0x83 | |
518 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 | |
519 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 | |
520 | #define PCIBIOS_SET_FAILED 0x88 | |
521 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 | |
522 | ||
a6961651 | 523 | /* |
f7625980 | 524 | * Translate above to generic errno for passing back through non-PCI code. |
a6961651 AW |
525 | */ |
526 | static inline int pcibios_err_to_errno(int err) | |
527 | { | |
528 | if (err <= PCIBIOS_SUCCESSFUL) | |
529 | return err; /* Assume already errno */ | |
530 | ||
531 | switch (err) { | |
532 | case PCIBIOS_FUNC_NOT_SUPPORTED: | |
533 | return -ENOENT; | |
534 | case PCIBIOS_BAD_VENDOR_ID: | |
d97ffe23 | 535 | return -ENOTTY; |
a6961651 AW |
536 | case PCIBIOS_DEVICE_NOT_FOUND: |
537 | return -ENODEV; | |
538 | case PCIBIOS_BAD_REGISTER_NUMBER: | |
539 | return -EFAULT; | |
540 | case PCIBIOS_SET_FAILED: | |
541 | return -EIO; | |
542 | case PCIBIOS_BUFFER_TOO_SMALL: | |
543 | return -ENOSPC; | |
544 | } | |
545 | ||
d97ffe23 | 546 | return -ERANGE; |
a6961651 AW |
547 | } |
548 | ||
1da177e4 LT |
549 | /* Low-level architecture-dependent routines */ |
550 | ||
551 | struct pci_ops { | |
552 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); | |
553 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); | |
554 | }; | |
555 | ||
b6ce068a MW |
556 | /* |
557 | * ACPI needs to be able to access PCI config space before we've done a | |
558 | * PCI bus scan and created pci_bus structures. | |
559 | */ | |
f39d5b72 BH |
560 | int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, |
561 | int reg, int len, u32 *val); | |
562 | int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn, | |
563 | int reg, int len, u32 val); | |
1da177e4 LT |
564 | |
565 | struct pci_bus_region { | |
0a5ef7b9 BH |
566 | dma_addr_t start; |
567 | dma_addr_t end; | |
1da177e4 LT |
568 | }; |
569 | ||
570 | struct pci_dynids { | |
571 | spinlock_t lock; /* protects list, index */ | |
572 | struct list_head list; /* for IDs added at runtime */ | |
1da177e4 LT |
573 | }; |
574 | ||
f7625980 BH |
575 | |
576 | /* | |
577 | * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides | |
578 | * a set of callbacks in struct pci_error_handlers, that device driver | |
579 | * will be notified of PCI bus errors, and will be driven to recovery | |
580 | * when an error occurs. | |
392a1ce7 | 581 | */ |
582 | ||
583 | typedef unsigned int __bitwise pci_ers_result_t; | |
584 | ||
585 | enum pci_ers_result { | |
586 | /* no result/none/not supported in device driver */ | |
587 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, | |
588 | ||
589 | /* Device driver can recover without slot reset */ | |
590 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, | |
591 | ||
592 | /* Device driver wants slot to be reset. */ | |
593 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, | |
594 | ||
595 | /* Device has completely failed, is unrecoverable */ | |
596 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, | |
597 | ||
598 | /* Device driver is fully recovered and operational */ | |
599 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, | |
918b4053 VMP |
600 | |
601 | /* No AER capabilities registered for the driver */ | |
602 | PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6, | |
392a1ce7 | 603 | }; |
604 | ||
605 | /* PCI bus error event callbacks */ | |
05cca6e5 | 606 | struct pci_error_handlers { |
392a1ce7 | 607 | /* PCI bus error detected on this device */ |
608 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, | |
05cca6e5 | 609 | enum pci_channel_state error); |
392a1ce7 | 610 | |
611 | /* MMIO has been re-enabled, but not DMA */ | |
612 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); | |
613 | ||
614 | /* PCI Express link has been reset */ | |
615 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); | |
616 | ||
617 | /* PCI slot has been reset */ | |
618 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); | |
619 | ||
3ebe7f9f KB |
620 | /* PCI function reset prepare or completed */ |
621 | void (*reset_notify)(struct pci_dev *dev, bool prepare); | |
622 | ||
392a1ce7 | 623 | /* Device driver may resume normal operations */ |
624 | void (*resume)(struct pci_dev *dev); | |
625 | }; | |
626 | ||
392a1ce7 | 627 | |
1da177e4 LT |
628 | struct module; |
629 | struct pci_driver { | |
630 | struct list_head node; | |
42b21932 | 631 | const char *name; |
1da177e4 LT |
632 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
633 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ | |
634 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
635 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ | |
cbd69dbb LT |
636 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
637 | int (*resume_early) (struct pci_dev *dev); | |
1da177e4 | 638 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
c8958177 | 639 | void (*shutdown) (struct pci_dev *dev); |
1789382a | 640 | int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* PF pdev */ |
49453028 | 641 | const struct pci_error_handlers *err_handler; |
1da177e4 LT |
642 | struct device_driver driver; |
643 | struct pci_dynids dynids; | |
644 | }; | |
645 | ||
05cca6e5 | 646 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
1da177e4 | 647 | |
90a1ba0c | 648 | /** |
9f9351bb | 649 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
90a1ba0c JB |
650 | * @_table: device table name |
651 | * | |
92e112fd | 652 | * This macro is deprecated and should not be used in new code. |
90a1ba0c | 653 | */ |
9f9351bb | 654 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
15856ad5 | 655 | const struct pci_device_id _table[] |
90a1ba0c | 656 | |
1da177e4 LT |
657 | /** |
658 | * PCI_DEVICE - macro used to describe a specific pci device | |
659 | * @vend: the 16 bit PCI Vendor ID | |
660 | * @dev: the 16 bit PCI Device ID | |
661 | * | |
662 | * This macro is used to create a struct pci_device_id that matches a | |
663 | * specific device. The subvendor and subdevice fields will be set to | |
664 | * PCI_ANY_ID. | |
665 | */ | |
666 | #define PCI_DEVICE(vend,dev) \ | |
667 | .vendor = (vend), .device = (dev), \ | |
668 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
669 | ||
3d567e0e NNS |
670 | /** |
671 | * PCI_DEVICE_SUB - macro used to describe a specific pci device with subsystem | |
672 | * @vend: the 16 bit PCI Vendor ID | |
673 | * @dev: the 16 bit PCI Device ID | |
674 | * @subvend: the 16 bit PCI Subvendor ID | |
675 | * @subdev: the 16 bit PCI Subdevice ID | |
676 | * | |
677 | * This macro is used to create a struct pci_device_id that matches a | |
678 | * specific device with subsystem information. | |
679 | */ | |
680 | #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \ | |
681 | .vendor = (vend), .device = (dev), \ | |
682 | .subvendor = (subvend), .subdevice = (subdev) | |
683 | ||
1da177e4 LT |
684 | /** |
685 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class | |
686 | * @dev_class: the class, subclass, prog-if triple for this device | |
687 | * @dev_class_mask: the class mask for this device | |
688 | * | |
689 | * This macro is used to create a struct pci_device_id that matches a | |
4352dfd5 | 690 | * specific PCI class. The vendor, device, subvendor, and subdevice |
1da177e4 LT |
691 | * fields will be set to PCI_ANY_ID. |
692 | */ | |
693 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ | |
694 | .class = (dev_class), .class_mask = (dev_class_mask), \ | |
695 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ | |
696 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
697 | ||
1597cacb AC |
698 | /** |
699 | * PCI_VDEVICE - macro used to describe a specific pci device in short form | |
c1309040 MR |
700 | * @vend: the vendor name |
701 | * @dev: the 16 bit PCI Device ID | |
1597cacb AC |
702 | * |
703 | * This macro is used to create a struct pci_device_id that matches a | |
704 | * specific PCI device. The subvendor, and subdevice fields will be set | |
705 | * to PCI_ANY_ID. The macro allows the next field to follow as the device | |
706 | * private data. | |
707 | */ | |
708 | ||
c1309040 MR |
709 | #define PCI_VDEVICE(vend, dev) \ |
710 | .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \ | |
711 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0 | |
1597cacb | 712 | |
1da177e4 LT |
713 | /* these external functions are only available when PCI support is enabled */ |
714 | #ifdef CONFIG_PCI | |
715 | ||
a58674ff | 716 | void pcie_bus_configure_settings(struct pci_bus *bus); |
b03e7495 JM |
717 | |
718 | enum pcie_bus_config_types { | |
5f39e670 | 719 | PCIE_BUS_TUNE_OFF, |
b03e7495 | 720 | PCIE_BUS_SAFE, |
5f39e670 | 721 | PCIE_BUS_PERFORMANCE, |
b03e7495 JM |
722 | PCIE_BUS_PEER2PEER, |
723 | }; | |
724 | ||
725 | extern enum pcie_bus_config_types pcie_bus_config; | |
726 | ||
1da177e4 LT |
727 | extern struct bus_type pci_bus_type; |
728 | ||
f7625980 BH |
729 | /* Do NOT directly access these two variables, unless you are arch-specific PCI |
730 | * code, or PCI core code. */ | |
1da177e4 | 731 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
f7625980 | 732 | /* Some device drivers need know if PCI is initiated */ |
f39d5b72 | 733 | int no_pci_devices(void); |
1da177e4 | 734 | |
3c449ed0 | 735 | void pcibios_resource_survey_bus(struct pci_bus *bus); |
10a95747 JL |
736 | void pcibios_add_bus(struct pci_bus *bus); |
737 | void pcibios_remove_bus(struct pci_bus *bus); | |
1da177e4 | 738 | void pcibios_fixup_bus(struct pci_bus *); |
4a7fb636 | 739 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
f7625980 | 740 | /* Architecture-specific versions may override this (weak) */ |
05cca6e5 | 741 | char *pcibios_setup(char *str); |
1da177e4 LT |
742 | |
743 | /* Used only when drivers/pci/setup.c is used */ | |
3b7a17fc | 744 | resource_size_t pcibios_align_resource(void *, const struct resource *, |
b26b2d49 | 745 | resource_size_t, |
e31dd6e4 | 746 | resource_size_t); |
1da177e4 LT |
747 | void pcibios_update_irq(struct pci_dev *, int irq); |
748 | ||
2d1c8618 BH |
749 | /* Weak but can be overriden by arch */ |
750 | void pci_fixup_cardbus(struct pci_bus *); | |
751 | ||
1da177e4 LT |
752 | /* Generic PCI functions used internally */ |
753 | ||
fc279850 | 754 | void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region, |
36a66cd6 | 755 | struct resource *res); |
fc279850 | 756 | void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res, |
36a66cd6 | 757 | struct pci_bus_region *region); |
d1fd4fb6 | 758 | void pcibios_scan_specific_bus(int busn); |
f39d5b72 | 759 | struct pci_bus *pci_find_bus(int domain, int busnr); |
c48f1670 | 760 | void pci_bus_add_devices(const struct pci_bus *bus); |
05cca6e5 GKH |
761 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, |
762 | struct pci_ops *ops, void *sysdata); | |
de4b2f76 | 763 | struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata); |
166c6370 BH |
764 | struct pci_bus *pci_create_root_bus(struct device *parent, int bus, |
765 | struct pci_ops *ops, void *sysdata, | |
766 | struct list_head *resources); | |
98a35831 YL |
767 | int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax); |
768 | int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax); | |
769 | void pci_bus_release_busn_res(struct pci_bus *b); | |
15856ad5 | 770 | struct pci_bus *pci_scan_root_bus(struct device *parent, int bus, |
a2ebb827 BH |
771 | struct pci_ops *ops, void *sysdata, |
772 | struct list_head *resources); | |
05cca6e5 GKH |
773 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, |
774 | int busnr); | |
3749c51a | 775 | void pcie_update_link_speed(struct pci_bus *bus, u16 link_status); |
f46753c5 | 776 | struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, |
828f3768 AC |
777 | const char *name, |
778 | struct hotplug_slot *hotplug); | |
f46753c5 | 779 | void pci_destroy_slot(struct pci_slot *slot); |
1da177e4 | 780 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
05cca6e5 | 781 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
cdb9b9f7 | 782 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
1da177e4 | 783 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
c893d133 | 784 | void pci_bus_add_device(struct pci_dev *dev); |
1da177e4 | 785 | void pci_read_bridge_bases(struct pci_bus *child); |
05cca6e5 GKH |
786 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
787 | struct resource *res); | |
3df425f3 | 788 | u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin); |
1da177e4 | 789 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
68feac87 | 790 | u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); |
f39d5b72 BH |
791 | struct pci_dev *pci_dev_get(struct pci_dev *dev); |
792 | void pci_dev_put(struct pci_dev *dev); | |
793 | void pci_remove_bus(struct pci_bus *b); | |
794 | void pci_stop_and_remove_bus_device(struct pci_dev *dev); | |
9d16947b | 795 | void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev); |
cdfcc572 YL |
796 | void pci_stop_root_bus(struct pci_bus *bus); |
797 | void pci_remove_root_bus(struct pci_bus *bus); | |
b3743fa4 | 798 | void pci_setup_cardbus(struct pci_bus *bus); |
f39d5b72 | 799 | void pci_sort_breadthfirst(void); |
fb8a0d9d WM |
800 | #define dev_is_pci(d) ((d)->bus == &pci_bus_type) |
801 | #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false)) | |
802 | #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0)) | |
1da177e4 LT |
803 | |
804 | /* Generic PCI functions exported to card drivers */ | |
805 | ||
388c8c16 JB |
806 | enum pci_lost_interrupt_reason { |
807 | PCI_LOST_IRQ_NO_INFORMATION = 0, | |
808 | PCI_LOST_IRQ_DISABLE_MSI, | |
809 | PCI_LOST_IRQ_DISABLE_MSIX, | |
810 | PCI_LOST_IRQ_DISABLE_ACPI, | |
811 | }; | |
812 | enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); | |
05cca6e5 GKH |
813 | int pci_find_capability(struct pci_dev *dev, int cap); |
814 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); | |
815 | int pci_find_ext_capability(struct pci_dev *dev, int cap); | |
44a9a36f | 816 | int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap); |
05cca6e5 GKH |
817 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); |
818 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); | |
29f3eb64 | 819 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
1da177e4 | 820 | |
d42552c3 AM |
821 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
822 | struct pci_dev *from); | |
05cca6e5 | 823 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
1da177e4 | 824 | unsigned int ss_vendor, unsigned int ss_device, |
b08508c4 | 825 | struct pci_dev *from); |
05cca6e5 | 826 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
3c299dc2 AP |
827 | struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus, |
828 | unsigned int devfn); | |
829 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, | |
830 | unsigned int devfn) | |
831 | { | |
832 | return pci_get_domain_bus_and_slot(0, bus, devfn); | |
833 | } | |
05cca6e5 | 834 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); |
1da177e4 LT |
835 | int pci_dev_present(const struct pci_device_id *ids); |
836 | ||
05cca6e5 GKH |
837 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
838 | int where, u8 *val); | |
839 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, | |
840 | int where, u16 *val); | |
841 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, | |
842 | int where, u32 *val); | |
843 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, | |
844 | int where, u8 val); | |
845 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, | |
846 | int where, u16 val); | |
847 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, | |
848 | int where, u32 val); | |
a72b46c3 | 849 | struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); |
1da177e4 | 850 | |
bf362f75 | 851 | static inline int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val) |
1da177e4 | 852 | { |
05cca6e5 | 853 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 854 | } |
bf362f75 | 855 | static inline int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val) |
1da177e4 | 856 | { |
05cca6e5 | 857 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 858 | } |
bf362f75 | 859 | static inline int pci_read_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 860 | u32 *val) |
1da177e4 | 861 | { |
05cca6e5 | 862 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 | 863 | } |
bf362f75 | 864 | static inline int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val) |
1da177e4 | 865 | { |
05cca6e5 | 866 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 | 867 | } |
bf362f75 | 868 | static inline int pci_write_config_word(const struct pci_dev *dev, int where, u16 val) |
1da177e4 | 869 | { |
05cca6e5 | 870 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 871 | } |
bf362f75 | 872 | static inline int pci_write_config_dword(const struct pci_dev *dev, int where, |
05cca6e5 | 873 | u32 val) |
1da177e4 | 874 | { |
05cca6e5 | 875 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
876 | } |
877 | ||
8c0d3a02 JL |
878 | int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val); |
879 | int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val); | |
880 | int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val); | |
881 | int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val); | |
882 | int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos, | |
883 | u16 clear, u16 set); | |
884 | int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos, | |
885 | u32 clear, u32 set); | |
886 | ||
887 | static inline int pcie_capability_set_word(struct pci_dev *dev, int pos, | |
888 | u16 set) | |
889 | { | |
890 | return pcie_capability_clear_and_set_word(dev, pos, 0, set); | |
891 | } | |
892 | ||
893 | static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos, | |
894 | u32 set) | |
895 | { | |
896 | return pcie_capability_clear_and_set_dword(dev, pos, 0, set); | |
897 | } | |
898 | ||
899 | static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos, | |
900 | u16 clear) | |
901 | { | |
902 | return pcie_capability_clear_and_set_word(dev, pos, clear, 0); | |
903 | } | |
904 | ||
905 | static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos, | |
906 | u32 clear) | |
907 | { | |
908 | return pcie_capability_clear_and_set_dword(dev, pos, clear, 0); | |
909 | } | |
910 | ||
c63587d7 AW |
911 | /* user-space driven config access */ |
912 | int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val); | |
913 | int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val); | |
914 | int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val); | |
915 | int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val); | |
916 | int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val); | |
917 | int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val); | |
918 | ||
4a7fb636 | 919 | int __must_check pci_enable_device(struct pci_dev *dev); |
b718989d BH |
920 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
921 | int __must_check pci_enable_device_mem(struct pci_dev *dev); | |
0b62e13b | 922 | int __must_check pci_reenable_device(struct pci_dev *); |
9ac7849e TH |
923 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
924 | void pcim_pin_device(struct pci_dev *pdev); | |
925 | ||
296ccb08 YS |
926 | static inline int pci_is_enabled(struct pci_dev *pdev) |
927 | { | |
928 | return (atomic_read(&pdev->enable_cnt) > 0); | |
929 | } | |
930 | ||
9ac7849e TH |
931 | static inline int pci_is_managed(struct pci_dev *pdev) |
932 | { | |
933 | return pdev->is_managed; | |
934 | } | |
935 | ||
1da177e4 | 936 | void pci_disable_device(struct pci_dev *dev); |
96c55900 MS |
937 | |
938 | extern unsigned int pcibios_max_latency; | |
1da177e4 | 939 | void pci_set_master(struct pci_dev *dev); |
6a479079 | 940 | void pci_clear_master(struct pci_dev *dev); |
96c55900 | 941 | |
f7bdd12d | 942 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
15ea76d4 | 943 | int pci_set_cacheline_size(struct pci_dev *dev); |
1da177e4 | 944 | #define HAVE_PCI_SET_MWI |
4a7fb636 | 945 | int __must_check pci_set_mwi(struct pci_dev *dev); |
694625c0 | 946 | int pci_try_set_mwi(struct pci_dev *dev); |
1da177e4 | 947 | void pci_clear_mwi(struct pci_dev *dev); |
a04ce0ff | 948 | void pci_intx(struct pci_dev *dev, int enable); |
a2e27787 JK |
949 | bool pci_intx_mask_supported(struct pci_dev *dev); |
950 | bool pci_check_and_mask_intx(struct pci_dev *dev); | |
951 | bool pci_check_and_unmask_intx(struct pci_dev *dev); | |
f5f2b131 | 952 | void pci_msi_off(struct pci_dev *dev); |
4d57cdfa | 953 | int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); |
59fc67de | 954 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
157e876f | 955 | int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask); |
3775a209 | 956 | int pci_wait_for_pending_transaction(struct pci_dev *dev); |
d556ad4b PO |
957 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
958 | int pcix_get_mmrbc(struct pci_dev *dev); | |
959 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); | |
2637e5b5 | 960 | int pcie_get_readrq(struct pci_dev *dev); |
d556ad4b | 961 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
b03e7495 JM |
962 | int pcie_get_mps(struct pci_dev *dev); |
963 | int pcie_set_mps(struct pci_dev *dev, int mps); | |
81377c8d JK |
964 | int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed, |
965 | enum pcie_link_width *width); | |
8c1c699f | 966 | int __pci_reset_function(struct pci_dev *dev); |
a96d627a | 967 | int __pci_reset_function_locked(struct pci_dev *dev); |
8dd7f803 | 968 | int pci_reset_function(struct pci_dev *dev); |
61cf16d8 | 969 | int pci_try_reset_function(struct pci_dev *dev); |
9a3d2b9b | 970 | int pci_probe_reset_slot(struct pci_slot *slot); |
090a3c53 | 971 | int pci_reset_slot(struct pci_slot *slot); |
61cf16d8 | 972 | int pci_try_reset_slot(struct pci_slot *slot); |
9a3d2b9b | 973 | int pci_probe_reset_bus(struct pci_bus *bus); |
090a3c53 | 974 | int pci_reset_bus(struct pci_bus *bus); |
61cf16d8 | 975 | int pci_try_reset_bus(struct pci_bus *bus); |
64e8674f | 976 | void pci_reset_bridge_secondary_bus(struct pci_dev *dev); |
14add80b | 977 | void pci_update_resource(struct pci_dev *dev, int resno); |
4a7fb636 | 978 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
2bbc6942 | 979 | int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align); |
c87deff7 | 980 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
8496e85c | 981 | bool pci_device_is_present(struct pci_dev *pdev); |
1da177e4 LT |
982 | |
983 | /* ROM control related routines */ | |
e416de5e AC |
984 | int pci_enable_rom(struct pci_dev *pdev); |
985 | void pci_disable_rom(struct pci_dev *pdev); | |
144a50ea | 986 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 | 987 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
97c44836 | 988 | size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); |
fffe01f7 | 989 | void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 LT |
990 | |
991 | /* Power management related routines */ | |
992 | int pci_save_state(struct pci_dev *dev); | |
1d3c16a8 | 993 | void pci_restore_state(struct pci_dev *dev); |
ffbdd3f7 | 994 | struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev); |
ffbdd3f7 AW |
995 | int pci_load_and_free_saved_state(struct pci_dev *dev, |
996 | struct pci_saved_state **state); | |
fd0f7f73 AW |
997 | struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap); |
998 | struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev, | |
999 | u16 cap); | |
1000 | int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size); | |
1001 | int pci_add_ext_cap_save_buffer(struct pci_dev *dev, | |
1002 | u16 cap, unsigned int size); | |
0e5dd46b | 1003 | int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); |
9c8550ee LT |
1004 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
1005 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); | |
e5899e1b | 1006 | bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); |
5a6c9b60 | 1007 | void pci_pme_active(struct pci_dev *dev, bool enable); |
6cbf8214 RW |
1008 | int __pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1009 | bool runtime, bool enable); | |
0235c4fc | 1010 | int pci_wake_from_d3(struct pci_dev *dev, bool enable); |
404cc2d8 RW |
1011 | int pci_prepare_to_sleep(struct pci_dev *dev); |
1012 | int pci_back_from_sleep(struct pci_dev *dev); | |
b67ea761 | 1013 | bool pci_dev_run_wake(struct pci_dev *dev); |
bf4d2908 | 1014 | bool pci_check_pme_status(struct pci_dev *dev); |
bf4d2908 | 1015 | void pci_pme_wakeup_bus(struct pci_bus *bus); |
1da177e4 | 1016 | |
6cbf8214 RW |
1017 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1018 | bool enable) | |
1019 | { | |
1020 | return __pci_enable_wake(dev, state, false, enable); | |
1021 | } | |
1da177e4 | 1022 | |
425c1b22 AW |
1023 | /* PCI Virtual Channel */ |
1024 | int pci_save_vc_state(struct pci_dev *dev); | |
1025 | void pci_restore_vc_state(struct pci_dev *dev); | |
1026 | void pci_allocate_vc_save_buffers(struct pci_dev *dev); | |
51c2e0a7 | 1027 | |
bb209c82 BH |
1028 | /* For use by arch with custom probe code */ |
1029 | void set_pcie_port_type(struct pci_dev *pdev); | |
1030 | void set_pcie_hotplug_bridge(struct pci_dev *pdev); | |
1031 | ||
ce5ccdef | 1032 | /* Functions for PCI Hotplug drivers to use */ |
05cca6e5 | 1033 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
2f320521 | 1034 | unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge); |
3ed4fd96 | 1035 | unsigned int pci_rescan_bus(struct pci_bus *bus); |
9d16947b RW |
1036 | void pci_lock_rescan_remove(void); |
1037 | void pci_unlock_rescan_remove(void); | |
ce5ccdef | 1038 | |
287d19ce SH |
1039 | /* Vital product data routines */ |
1040 | ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); | |
1041 | ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); | |
1042 | ||
1da177e4 | 1043 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
925845bd | 1044 | resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx); |
ea741551 | 1045 | void pci_bus_assign_resources(const struct pci_bus *bus); |
1da177e4 LT |
1046 | void pci_bus_size_bridges(struct pci_bus *bus); |
1047 | int pci_claim_resource(struct pci_dev *, int); | |
1048 | void pci_assign_unassigned_resources(void); | |
6841ec68 | 1049 | void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge); |
17787940 | 1050 | void pci_assign_unassigned_bus_resources(struct pci_bus *bus); |
39772038 | 1051 | void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus); |
1da177e4 | 1052 | void pdev_enable_device(struct pci_dev *); |
842de40d | 1053 | int pci_enable_resources(struct pci_dev *, int mask); |
1da177e4 | 1054 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
d5341942 | 1055 | int (*)(const struct pci_dev *, u8, u8)); |
1da177e4 | 1056 | #define HAVE_PCI_REQ_REGIONS 2 |
4a7fb636 | 1057 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
e8de1481 | 1058 | int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); |
1da177e4 | 1059 | void pci_release_regions(struct pci_dev *); |
4a7fb636 | 1060 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
e8de1481 | 1061 | int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); |
1da177e4 | 1062 | void pci_release_region(struct pci_dev *, int); |
c87deff7 | 1063 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
e8de1481 | 1064 | int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); |
c87deff7 | 1065 | void pci_release_selected_regions(struct pci_dev *, int); |
1da177e4 LT |
1066 | |
1067 | /* drivers/pci/bus.c */ | |
fe830ef6 JL |
1068 | struct pci_bus *pci_bus_get(struct pci_bus *bus); |
1069 | void pci_bus_put(struct pci_bus *bus); | |
45ca9e97 | 1070 | void pci_add_resource(struct list_head *resources, struct resource *res); |
0efd5aab BH |
1071 | void pci_add_resource_offset(struct list_head *resources, struct resource *res, |
1072 | resource_size_t offset); | |
45ca9e97 | 1073 | void pci_free_resource_list(struct list_head *resources); |
2fe2abf8 BH |
1074 | void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags); |
1075 | struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n); | |
1076 | void pci_bus_remove_resources(struct pci_bus *bus); | |
1077 | ||
89a74ecc | 1078 | #define pci_bus_for_each_resource(bus, res, i) \ |
2fe2abf8 BH |
1079 | for (i = 0; \ |
1080 | (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \ | |
1081 | i++) | |
89a74ecc | 1082 | |
4a7fb636 AM |
1083 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
1084 | struct resource *res, resource_size_t size, | |
1085 | resource_size_t align, resource_size_t min, | |
664c2848 | 1086 | unsigned long type_mask, |
3b7a17fc DB |
1087 | resource_size_t (*alignf)(void *, |
1088 | const struct resource *, | |
b26b2d49 DB |
1089 | resource_size_t, |
1090 | resource_size_t), | |
4a7fb636 | 1091 | void *alignf_data); |
1da177e4 | 1092 | |
06cf56e4 BH |
1093 | static inline dma_addr_t pci_bus_address(struct pci_dev *pdev, int bar) |
1094 | { | |
1095 | struct pci_bus_region region; | |
1096 | ||
1097 | pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]); | |
1098 | return region.start; | |
1099 | } | |
1100 | ||
863b18f4 | 1101 | /* Proper probing supporting hot-pluggable devices */ |
725522b5 GKH |
1102 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
1103 | const char *mod_name); | |
bba81165 AM |
1104 | |
1105 | /* | |
1106 | * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded | |
1107 | */ | |
1108 | #define pci_register_driver(driver) \ | |
1109 | __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) | |
863b18f4 | 1110 | |
05cca6e5 | 1111 | void pci_unregister_driver(struct pci_driver *dev); |
aad4f400 GKH |
1112 | |
1113 | /** | |
1114 | * module_pci_driver() - Helper macro for registering a PCI driver | |
1115 | * @__pci_driver: pci_driver struct | |
1116 | * | |
1117 | * Helper macro for PCI drivers which do not do anything special in module | |
1118 | * init/exit. This eliminates a lot of boilerplate. Each module may only | |
1119 | * use this macro once, and calling it replaces module_init() and module_exit() | |
1120 | */ | |
1121 | #define module_pci_driver(__pci_driver) \ | |
1122 | module_driver(__pci_driver, pci_register_driver, \ | |
1123 | pci_unregister_driver) | |
1124 | ||
05cca6e5 | 1125 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); |
9dba910e TH |
1126 | int pci_add_dynid(struct pci_driver *drv, |
1127 | unsigned int vendor, unsigned int device, | |
1128 | unsigned int subvendor, unsigned int subdevice, | |
1129 | unsigned int class, unsigned int class_mask, | |
1130 | unsigned long driver_data); | |
05cca6e5 GKH |
1131 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, |
1132 | struct pci_dev *dev); | |
1133 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, | |
1134 | int pass); | |
1da177e4 | 1135 | |
70298c6e | 1136 | void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), |
cecf4864 | 1137 | void *userdata); |
ac7dc65a | 1138 | int pci_cfg_space_size(struct pci_dev *dev); |
05cca6e5 | 1139 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
e2444273 | 1140 | void pci_setup_bridge(struct pci_bus *bus); |
ac5ad93e GS |
1141 | resource_size_t pcibios_window_alignment(struct pci_bus *bus, |
1142 | unsigned long type); | |
cecf4864 | 1143 | |
3448a19d DA |
1144 | #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0) |
1145 | #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1) | |
1146 | ||
deb2d2ec | 1147 | int pci_set_vga_state(struct pci_dev *pdev, bool decode, |
3448a19d | 1148 | unsigned int command_bits, u32 flags); |
1da177e4 LT |
1149 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
1150 | ||
f41b1771 | 1151 | #include <linux/pci-dma.h> |
1da177e4 LT |
1152 | #include <linux/dmapool.h> |
1153 | ||
1154 | #define pci_pool dma_pool | |
1155 | #define pci_pool_create(name, pdev, size, align, allocation) \ | |
1156 | dma_pool_create(name, &pdev->dev, size, align, allocation) | |
1157 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) | |
1158 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) | |
1159 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) | |
1160 | ||
e24c2d96 DM |
1161 | enum pci_dma_burst_strategy { |
1162 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, | |
1163 | strategy_parameter is N/A */ | |
1164 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter | |
1165 | byte boundaries */ | |
1166 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of | |
1167 | strategy_parameter byte boundaries */ | |
1168 | }; | |
1169 | ||
1da177e4 | 1170 | struct msix_entry { |
16dbef4a | 1171 | u32 vector; /* kernel uses to write allocated vector */ |
1da177e4 LT |
1172 | u16 entry; /* driver uses to specify entry, OS writes */ |
1173 | }; | |
1174 | ||
0366f8f7 | 1175 | |
4c859804 BH |
1176 | #ifdef CONFIG_PCI_MSI |
1177 | int pci_msi_vec_count(struct pci_dev *dev); | |
f39d5b72 BH |
1178 | void pci_msi_shutdown(struct pci_dev *dev); |
1179 | void pci_disable_msi(struct pci_dev *dev); | |
4c859804 | 1180 | int pci_msix_vec_count(struct pci_dev *dev); |
f39d5b72 BH |
1181 | int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec); |
1182 | void pci_msix_shutdown(struct pci_dev *dev); | |
1183 | void pci_disable_msix(struct pci_dev *dev); | |
1184 | void msi_remove_pci_irq_vectors(struct pci_dev *dev); | |
1185 | void pci_restore_msi_state(struct pci_dev *dev); | |
1186 | int pci_msi_enabled(void); | |
4c859804 | 1187 | int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec); |
f7fc32cb AG |
1188 | static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) |
1189 | { | |
1190 | int rc = pci_enable_msi_range(dev, nvec, nvec); | |
1191 | if (rc < 0) | |
1192 | return rc; | |
1193 | return 0; | |
1194 | } | |
4c859804 BH |
1195 | int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, |
1196 | int minvec, int maxvec); | |
f7fc32cb AG |
1197 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
1198 | struct msix_entry *entries, int nvec) | |
1199 | { | |
1200 | int rc = pci_enable_msix_range(dev, entries, nvec, nvec); | |
1201 | if (rc < 0) | |
1202 | return rc; | |
1203 | return 0; | |
1204 | } | |
4c859804 | 1205 | #else |
2ee546c4 | 1206 | static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; } |
2ee546c4 BH |
1207 | static inline void pci_msi_shutdown(struct pci_dev *dev) { } |
1208 | static inline void pci_disable_msi(struct pci_dev *dev) { } | |
1209 | static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; } | |
05cca6e5 GKH |
1210 | static inline int pci_enable_msix(struct pci_dev *dev, |
1211 | struct msix_entry *entries, int nvec) | |
2ee546c4 BH |
1212 | { return -ENOSYS; } |
1213 | static inline void pci_msix_shutdown(struct pci_dev *dev) { } | |
1214 | static inline void pci_disable_msix(struct pci_dev *dev) { } | |
1215 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) { } | |
1216 | static inline void pci_restore_msi_state(struct pci_dev *dev) { } | |
1217 | static inline int pci_msi_enabled(void) { return 0; } | |
302a2523 AG |
1218 | static inline int pci_enable_msi_range(struct pci_dev *dev, int minvec, |
1219 | int maxvec) | |
2ee546c4 | 1220 | { return -ENOSYS; } |
f7fc32cb AG |
1221 | static inline int pci_enable_msi_exact(struct pci_dev *dev, int nvec) |
1222 | { return -ENOSYS; } | |
302a2523 AG |
1223 | static inline int pci_enable_msix_range(struct pci_dev *dev, |
1224 | struct msix_entry *entries, int minvec, int maxvec) | |
2ee546c4 | 1225 | { return -ENOSYS; } |
f7fc32cb AG |
1226 | static inline int pci_enable_msix_exact(struct pci_dev *dev, |
1227 | struct msix_entry *entries, int nvec) | |
1228 | { return -ENOSYS; } | |
1da177e4 LT |
1229 | #endif |
1230 | ||
ab0724ff | 1231 | #ifdef CONFIG_PCIEPORTBUS |
415e12b2 RW |
1232 | extern bool pcie_ports_disabled; |
1233 | extern bool pcie_ports_auto; | |
ab0724ff MT |
1234 | #else |
1235 | #define pcie_ports_disabled true | |
1236 | #define pcie_ports_auto false | |
1237 | #endif | |
415e12b2 | 1238 | |
4c859804 | 1239 | #ifdef CONFIG_PCIEASPM |
f39d5b72 | 1240 | bool pcie_aspm_support_enabled(void); |
4c859804 BH |
1241 | #else |
1242 | static inline bool pcie_aspm_support_enabled(void) { return false; } | |
3e1b1600 AP |
1243 | #endif |
1244 | ||
415e12b2 RW |
1245 | #ifdef CONFIG_PCIEAER |
1246 | void pci_no_aer(void); | |
1247 | bool pci_aer_available(void); | |
1248 | #else | |
1249 | static inline void pci_no_aer(void) { } | |
1250 | static inline bool pci_aer_available(void) { return false; } | |
1251 | #endif | |
1252 | ||
4c859804 | 1253 | #ifdef CONFIG_PCIE_ECRC |
f39d5b72 BH |
1254 | void pcie_set_ecrc_checking(struct pci_dev *dev); |
1255 | void pcie_ecrc_get_policy(char *str); | |
4c859804 | 1256 | #else |
2ee546c4 BH |
1257 | static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { } |
1258 | static inline void pcie_ecrc_get_policy(char *str) { } | |
43c16408 AP |
1259 | #endif |
1260 | ||
034cd97e | 1261 | #define pci_enable_msi(pdev) pci_enable_msi_exact(pdev, 1) |
1c8d7b0a | 1262 | |
8b955b0d | 1263 | #ifdef CONFIG_HT_IRQ |
8b955b0d EB |
1264 | /* The functions a driver should call */ |
1265 | int ht_create_irq(struct pci_dev *dev, int idx); | |
1266 | void ht_destroy_irq(unsigned int irq); | |
8b955b0d EB |
1267 | #endif /* CONFIG_HT_IRQ */ |
1268 | ||
f39d5b72 BH |
1269 | void pci_cfg_access_lock(struct pci_dev *dev); |
1270 | bool pci_cfg_access_trylock(struct pci_dev *dev); | |
1271 | void pci_cfg_access_unlock(struct pci_dev *dev); | |
e04b0ea2 | 1272 | |
4352dfd5 GKH |
1273 | /* |
1274 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), | |
f7625980 | 1275 | * a PCI domain is defined to be a set of PCI buses which share |
4352dfd5 GKH |
1276 | * configuration space. |
1277 | */ | |
32a2eea7 JG |
1278 | #ifdef CONFIG_PCI_DOMAINS |
1279 | extern int pci_domains_supported; | |
1280 | #else | |
1281 | enum { pci_domains_supported = 0 }; | |
2ee546c4 BH |
1282 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1283 | static inline int pci_proc_domain(struct pci_bus *bus) { return 0; } | |
32a2eea7 | 1284 | #endif /* CONFIG_PCI_DOMAINS */ |
1da177e4 | 1285 | |
95a8b6ef MT |
1286 | /* some architectures require additional setup to direct VGA traffic */ |
1287 | typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode, | |
3448a19d | 1288 | unsigned int command_bits, u32 flags); |
f39d5b72 | 1289 | void pci_register_set_vga_state(arch_set_vga_state_t func); |
95a8b6ef | 1290 | |
4352dfd5 | 1291 | #else /* CONFIG_PCI is not enabled */ |
1da177e4 LT |
1292 | |
1293 | /* | |
1294 | * If the system does not have PCI, clearly these return errors. Define | |
1295 | * these as simple inline functions to avoid hair in drivers. | |
1296 | */ | |
1297 | ||
05cca6e5 GKH |
1298 | #define _PCI_NOP(o, s, t) \ |
1299 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | |
1300 | int where, t val) \ | |
1da177e4 | 1301 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
05cca6e5 GKH |
1302 | |
1303 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | |
1304 | _PCI_NOP(o, word, u16 x) \ | |
1305 | _PCI_NOP(o, dword, u32 x) | |
1da177e4 LT |
1306 | _PCI_NOP_ALL(read, *) |
1307 | _PCI_NOP_ALL(write,) | |
1308 | ||
d42552c3 | 1309 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
05cca6e5 GKH |
1310 | unsigned int device, |
1311 | struct pci_dev *from) | |
2ee546c4 | 1312 | { return NULL; } |
d42552c3 | 1313 | |
05cca6e5 GKH |
1314 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
1315 | unsigned int device, | |
1316 | unsigned int ss_vendor, | |
1317 | unsigned int ss_device, | |
b08508c4 | 1318 | struct pci_dev *from) |
2ee546c4 | 1319 | { return NULL; } |
1da177e4 | 1320 | |
05cca6e5 GKH |
1321 | static inline struct pci_dev *pci_get_class(unsigned int class, |
1322 | struct pci_dev *from) | |
2ee546c4 | 1323 | { return NULL; } |
1da177e4 LT |
1324 | |
1325 | #define pci_dev_present(ids) (0) | |
ed4aaadb | 1326 | #define no_pci_devices() (1) |
1da177e4 LT |
1327 | #define pci_dev_put(dev) do { } while (0) |
1328 | ||
2ee546c4 BH |
1329 | static inline void pci_set_master(struct pci_dev *dev) { } |
1330 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } | |
1331 | static inline void pci_disable_device(struct pci_dev *dev) { } | |
05cca6e5 | 1332 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) |
2ee546c4 | 1333 | { return -EIO; } |
80be0385 | 1334 | static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) |
2ee546c4 | 1335 | { return -EIO; } |
4d57cdfa FT |
1336 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
1337 | unsigned int size) | |
2ee546c4 | 1338 | { return -EIO; } |
59fc67de FT |
1339 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
1340 | unsigned long mask) | |
2ee546c4 | 1341 | { return -EIO; } |
05cca6e5 | 1342 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
2ee546c4 | 1343 | { return -EBUSY; } |
05cca6e5 GKH |
1344 | static inline int __pci_register_driver(struct pci_driver *drv, |
1345 | struct module *owner) | |
2ee546c4 | 1346 | { return 0; } |
05cca6e5 | 1347 | static inline int pci_register_driver(struct pci_driver *drv) |
2ee546c4 BH |
1348 | { return 0; } |
1349 | static inline void pci_unregister_driver(struct pci_driver *drv) { } | |
05cca6e5 | 1350 | static inline int pci_find_capability(struct pci_dev *dev, int cap) |
2ee546c4 | 1351 | { return 0; } |
05cca6e5 GKH |
1352 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, |
1353 | int cap) | |
2ee546c4 | 1354 | { return 0; } |
05cca6e5 | 1355 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) |
2ee546c4 | 1356 | { return 0; } |
05cca6e5 | 1357 | |
1da177e4 | 1358 | /* Power management related routines */ |
2ee546c4 BH |
1359 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
1360 | static inline void pci_restore_state(struct pci_dev *dev) { } | |
05cca6e5 | 1361 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
2ee546c4 | 1362 | { return 0; } |
3449248c | 1363 | static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable) |
2ee546c4 | 1364 | { return 0; } |
05cca6e5 GKH |
1365 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, |
1366 | pm_message_t state) | |
2ee546c4 | 1367 | { return PCI_D0; } |
05cca6e5 GKH |
1368 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, |
1369 | int enable) | |
2ee546c4 | 1370 | { return 0; } |
48a92a81 | 1371 | |
05cca6e5 | 1372 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) |
2ee546c4 BH |
1373 | { return -EIO; } |
1374 | static inline void pci_release_regions(struct pci_dev *dev) { } | |
0da0ead9 | 1375 | |
a46e8126 KG |
1376 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
1377 | ||
2ee546c4 | 1378 | static inline void pci_block_cfg_access(struct pci_dev *dev) { } |
fb51ccbf JK |
1379 | static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev) |
1380 | { return 0; } | |
2ee546c4 | 1381 | static inline void pci_unblock_cfg_access(struct pci_dev *dev) { } |
e04b0ea2 | 1382 | |
d80d0217 RD |
1383 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
1384 | { return NULL; } | |
d80d0217 RD |
1385 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, |
1386 | unsigned int devfn) | |
1387 | { return NULL; } | |
d80d0217 RD |
1388 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, |
1389 | unsigned int devfn) | |
1390 | { return NULL; } | |
1391 | ||
2ee546c4 BH |
1392 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
1393 | static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; } | |
12ea6cad | 1394 | |
fb8a0d9d WM |
1395 | #define dev_is_pci(d) (false) |
1396 | #define dev_is_pf(d) (false) | |
1397 | #define dev_num_vf(d) (0) | |
4352dfd5 | 1398 | #endif /* CONFIG_PCI */ |
1da177e4 | 1399 | |
4352dfd5 GKH |
1400 | /* Include architecture-dependent settings and functions */ |
1401 | ||
1402 | #include <asm/pci.h> | |
1da177e4 LT |
1403 | |
1404 | /* these helpers provide future and backwards compatibility | |
1405 | * for accessing popular PCI BAR info */ | |
05cca6e5 GKH |
1406 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
1407 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) | |
1408 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) | |
1da177e4 | 1409 | #define pci_resource_len(dev,bar) \ |
05cca6e5 GKH |
1410 | ((pci_resource_start((dev), (bar)) == 0 && \ |
1411 | pci_resource_end((dev), (bar)) == \ | |
1412 | pci_resource_start((dev), (bar))) ? 0 : \ | |
1413 | \ | |
1414 | (pci_resource_end((dev), (bar)) - \ | |
1415 | pci_resource_start((dev), (bar)) + 1)) | |
1da177e4 LT |
1416 | |
1417 | /* Similar to the helpers above, these manipulate per-pci_dev | |
1418 | * driver-specific data. They are really just a wrapper around | |
1419 | * the generic device structure functions of these calls. | |
1420 | */ | |
05cca6e5 | 1421 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
1da177e4 LT |
1422 | { |
1423 | return dev_get_drvdata(&pdev->dev); | |
1424 | } | |
1425 | ||
05cca6e5 | 1426 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
1da177e4 LT |
1427 | { |
1428 | dev_set_drvdata(&pdev->dev, data); | |
1429 | } | |
1430 | ||
1431 | /* If you want to know what to call your pci_dev, ask this function. | |
1432 | * Again, it's a wrapper around the generic device. | |
1433 | */ | |
2fc90f61 | 1434 | static inline const char *pci_name(const struct pci_dev *pdev) |
1da177e4 | 1435 | { |
c6c4f070 | 1436 | return dev_name(&pdev->dev); |
1da177e4 LT |
1437 | } |
1438 | ||
2311b1f2 ME |
1439 | |
1440 | /* Some archs don't want to expose struct resource to userland as-is | |
1441 | * in sysfs and /proc | |
1442 | */ | |
1443 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER | |
1444 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
05cca6e5 | 1445 | const struct resource *rsrc, resource_size_t *start, |
e31dd6e4 | 1446 | resource_size_t *end) |
2311b1f2 ME |
1447 | { |
1448 | *start = rsrc->start; | |
1449 | *end = rsrc->end; | |
1450 | } | |
1451 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ | |
1452 | ||
1453 | ||
1da177e4 LT |
1454 | /* |
1455 | * The world is not perfect and supplies us with broken PCI devices. | |
1456 | * For at least a part of these bugs we need a work-around, so both | |
1457 | * generic (drivers/pci/quirks.c) and per-architecture code can define | |
1458 | * fixup hooks to be called for particular buggy devices. | |
1459 | */ | |
1460 | ||
1461 | struct pci_fixup { | |
f4ca5c6a YL |
1462 | u16 vendor; /* You can use PCI_ANY_ID here of course */ |
1463 | u16 device; /* You can use PCI_ANY_ID here of course */ | |
1464 | u32 class; /* You can use PCI_ANY_ID here too */ | |
1465 | unsigned int class_shift; /* should be 0, 8, 16 */ | |
1da177e4 LT |
1466 | void (*hook)(struct pci_dev *dev); |
1467 | }; | |
1468 | ||
1469 | enum pci_fixup_pass { | |
1470 | pci_fixup_early, /* Before probing BARs */ | |
1471 | pci_fixup_header, /* After reading configuration header */ | |
1472 | pci_fixup_final, /* Final phase of device fixups */ | |
1473 | pci_fixup_enable, /* pci_enable_device() time */ | |
e1a2a51e RW |
1474 | pci_fixup_resume, /* pci_device_resume() */ |
1475 | pci_fixup_suspend, /* pci_device_suspend */ | |
1476 | pci_fixup_resume_early, /* pci_device_resume_early() */ | |
1da177e4 LT |
1477 | }; |
1478 | ||
1479 | /* Anonymous variables would be nice... */ | |
f4ca5c6a YL |
1480 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \ |
1481 | class_shift, hook) \ | |
ecf61c78 | 1482 | static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \ |
f4ca5c6a YL |
1483 | __attribute__((__section__(#section), aligned((sizeof(void *))))) \ |
1484 | = { vendor, device, class, class_shift, hook }; | |
1485 | ||
1486 | #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \ | |
1487 | class_shift, hook) \ | |
1488 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
ecf61c78 | 1489 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1490 | #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \ |
1491 | class_shift, hook) \ | |
1492 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
ecf61c78 | 1493 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1494 | #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \ |
1495 | class_shift, hook) \ | |
1496 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
ecf61c78 | 1497 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1498 | #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \ |
1499 | class_shift, hook) \ | |
1500 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
ecf61c78 | 1501 | hook, vendor, device, class, class_shift, hook) |
f4ca5c6a YL |
1502 | #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \ |
1503 | class_shift, hook) \ | |
1504 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
ecf61c78 | 1505 | resume##hook, vendor, device, class, \ |
f4ca5c6a YL |
1506 | class_shift, hook) |
1507 | #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \ | |
1508 | class_shift, hook) \ | |
1509 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
ecf61c78 | 1510 | resume_early##hook, vendor, device, \ |
f4ca5c6a YL |
1511 | class, class_shift, hook) |
1512 | #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \ | |
1513 | class_shift, hook) \ | |
1514 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
ecf61c78 | 1515 | suspend##hook, vendor, device, class, \ |
f4ca5c6a YL |
1516 | class_shift, hook) |
1517 | ||
1da177e4 LT |
1518 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
1519 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
ecf61c78 | 1520 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1521 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
1522 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
ecf61c78 | 1523 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1524 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
1525 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
ecf61c78 | 1526 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1da177e4 LT |
1527 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
1528 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
ecf61c78 | 1529 | hook, vendor, device, PCI_ANY_ID, 0, hook) |
1597cacb AC |
1530 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
1531 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
ecf61c78 | 1532 | resume##hook, vendor, device, \ |
f4ca5c6a | 1533 | PCI_ANY_ID, 0, hook) |
e1a2a51e RW |
1534 | #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ |
1535 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ | |
ecf61c78 | 1536 | resume_early##hook, vendor, device, \ |
f4ca5c6a | 1537 | PCI_ANY_ID, 0, hook) |
e1a2a51e RW |
1538 | #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ |
1539 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ | |
ecf61c78 | 1540 | suspend##hook, vendor, device, \ |
f4ca5c6a | 1541 | PCI_ANY_ID, 0, hook) |
1da177e4 | 1542 | |
93177a74 | 1543 | #ifdef CONFIG_PCI_QUIRKS |
1da177e4 | 1544 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
12ea6cad | 1545 | struct pci_dev *pci_get_dma_source(struct pci_dev *dev); |
ad805758 | 1546 | int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags); |
2c744244 | 1547 | void pci_dev_specific_enable_acs(struct pci_dev *dev); |
93177a74 RW |
1548 | #else |
1549 | static inline void pci_fixup_device(enum pci_fixup_pass pass, | |
2ee546c4 | 1550 | struct pci_dev *dev) { } |
12ea6cad AW |
1551 | static inline struct pci_dev *pci_get_dma_source(struct pci_dev *dev) |
1552 | { | |
1553 | return pci_dev_get(dev); | |
1554 | } | |
ad805758 AW |
1555 | static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev, |
1556 | u16 acs_flags) | |
1557 | { | |
1558 | return -ENOTTY; | |
1559 | } | |
2c744244 | 1560 | static inline void pci_dev_specific_enable_acs(struct pci_dev *dev) { } |
93177a74 | 1561 | #endif |
1da177e4 | 1562 | |
05cca6e5 | 1563 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
5ea81769 | 1564 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
05cca6e5 | 1565 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
fb7ebfe4 YL |
1566 | int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name); |
1567 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask, | |
916fbfb7 | 1568 | const char *name); |
fb7ebfe4 | 1569 | void pcim_iounmap_regions(struct pci_dev *pdev, int mask); |
5ea81769 | 1570 | |
1da177e4 | 1571 | extern int pci_pci_problems; |
236561e5 | 1572 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
1da177e4 LT |
1573 | #define PCIPCI_TRITON 2 |
1574 | #define PCIPCI_NATOMA 4 | |
1575 | #define PCIPCI_VIAETBF 8 | |
1576 | #define PCIPCI_VSFX 16 | |
236561e5 AC |
1577 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
1578 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ | |
1da177e4 | 1579 | |
4516a618 AN |
1580 | extern unsigned long pci_cardbus_io_size; |
1581 | extern unsigned long pci_cardbus_mem_size; | |
15856ad5 | 1582 | extern u8 pci_dfl_cache_line_size; |
ac1aa47b | 1583 | extern u8 pci_cache_line_size; |
4516a618 | 1584 | |
28760489 EB |
1585 | extern unsigned long pci_hotplug_io_size; |
1586 | extern unsigned long pci_hotplug_mem_size; | |
1587 | ||
f7625980 | 1588 | /* Architecture-specific versions may override these (weak) */ |
19792a08 | 1589 | void pcibios_disable_device(struct pci_dev *dev); |
cfce9fb8 | 1590 | void pcibios_set_master(struct pci_dev *dev); |
19792a08 AB |
1591 | int pcibios_set_pcie_reset_state(struct pci_dev *dev, |
1592 | enum pcie_reset_state state); | |
eca0d467 | 1593 | int pcibios_add_device(struct pci_dev *dev); |
6ae32c53 | 1594 | void pcibios_release_device(struct pci_dev *dev); |
a43ae58c | 1595 | void pcibios_penalize_isa_irq(int irq, int active); |
575e3348 | 1596 | |
699c1985 SO |
1597 | #ifdef CONFIG_HIBERNATE_CALLBACKS |
1598 | extern struct dev_pm_ops pcibios_pm_ops; | |
1599 | #endif | |
1600 | ||
7752d5cf | 1601 | #ifdef CONFIG_PCI_MMCONFIG |
f39d5b72 BH |
1602 | void __init pci_mmcfg_early_init(void); |
1603 | void __init pci_mmcfg_late_init(void); | |
7752d5cf | 1604 | #else |
bb63b421 | 1605 | static inline void pci_mmcfg_early_init(void) { } |
7752d5cf RH |
1606 | static inline void pci_mmcfg_late_init(void) { } |
1607 | #endif | |
1608 | ||
642c92da | 1609 | int pci_ext_cfg_avail(void); |
0ef5f8f6 | 1610 | |
1684f5dd | 1611 | void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); |
aa42d7c6 | 1612 | |
dd7cc44d | 1613 | #ifdef CONFIG_PCI_IOV |
f39d5b72 BH |
1614 | int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); |
1615 | void pci_disable_sriov(struct pci_dev *dev); | |
f39d5b72 | 1616 | int pci_num_vf(struct pci_dev *dev); |
5a8eb242 | 1617 | int pci_vfs_assigned(struct pci_dev *dev); |
f39d5b72 BH |
1618 | int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs); |
1619 | int pci_sriov_get_totalvfs(struct pci_dev *dev); | |
dd7cc44d YZ |
1620 | #else |
1621 | static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) | |
2ee546c4 BH |
1622 | { return -ENODEV; } |
1623 | static inline void pci_disable_sriov(struct pci_dev *dev) { } | |
2ee546c4 | 1624 | static inline int pci_num_vf(struct pci_dev *dev) { return 0; } |
5a8eb242 | 1625 | static inline int pci_vfs_assigned(struct pci_dev *dev) |
2ee546c4 | 1626 | { return 0; } |
bff73156 | 1627 | static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) |
2ee546c4 | 1628 | { return 0; } |
bff73156 | 1629 | static inline int pci_sriov_get_totalvfs(struct pci_dev *dev) |
2ee546c4 | 1630 | { return 0; } |
dd7cc44d YZ |
1631 | #endif |
1632 | ||
c825bc94 | 1633 | #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) |
f39d5b72 BH |
1634 | void pci_hp_create_module_link(struct pci_slot *pci_slot); |
1635 | void pci_hp_remove_module_link(struct pci_slot *pci_slot); | |
c825bc94 KK |
1636 | #endif |
1637 | ||
d7b7e605 KK |
1638 | /** |
1639 | * pci_pcie_cap - get the saved PCIe capability offset | |
1640 | * @dev: PCI device | |
1641 | * | |
1642 | * PCIe capability offset is calculated at PCI device initialization | |
1643 | * time and saved in the data structure. This function returns saved | |
1644 | * PCIe capability offset. Using this instead of pci_find_capability() | |
1645 | * reduces unnecessary search in the PCI configuration space. If you | |
1646 | * need to calculate PCIe capability offset from raw device for some | |
1647 | * reasons, please use pci_find_capability() instead. | |
1648 | */ | |
1649 | static inline int pci_pcie_cap(struct pci_dev *dev) | |
1650 | { | |
1651 | return dev->pcie_cap; | |
1652 | } | |
1653 | ||
7eb776c4 KK |
1654 | /** |
1655 | * pci_is_pcie - check if the PCI device is PCI Express capable | |
1656 | * @dev: PCI device | |
1657 | * | |
a895c28a | 1658 | * Returns: true if the PCI device is PCI Express capable, false otherwise. |
7eb776c4 KK |
1659 | */ |
1660 | static inline bool pci_is_pcie(struct pci_dev *dev) | |
1661 | { | |
a895c28a | 1662 | return pci_pcie_cap(dev); |
7eb776c4 KK |
1663 | } |
1664 | ||
7c9c003c MS |
1665 | /** |
1666 | * pcie_caps_reg - get the PCIe Capabilities Register | |
1667 | * @dev: PCI device | |
1668 | */ | |
1669 | static inline u16 pcie_caps_reg(const struct pci_dev *dev) | |
1670 | { | |
1671 | return dev->pcie_flags_reg; | |
1672 | } | |
1673 | ||
786e2288 YW |
1674 | /** |
1675 | * pci_pcie_type - get the PCIe device/port type | |
1676 | * @dev: PCI device | |
1677 | */ | |
1678 | static inline int pci_pcie_type(const struct pci_dev *dev) | |
1679 | { | |
1c531d82 | 1680 | return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; |
786e2288 YW |
1681 | } |
1682 | ||
5d990b62 | 1683 | void pci_request_acs(void); |
ad805758 AW |
1684 | bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); |
1685 | bool pci_acs_path_enabled(struct pci_dev *start, | |
1686 | struct pci_dev *end, u16 acs_flags); | |
a2ce7662 | 1687 | |
7ad506fa MC |
1688 | #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */ |
1689 | #define PCI_VPD_LRDT_ID(x) (x | PCI_VPD_LRDT) | |
1690 | ||
1691 | /* Large Resource Data Type Tag Item Names */ | |
1692 | #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */ | |
1693 | #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */ | |
1694 | #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */ | |
1695 | ||
1696 | #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING) | |
1697 | #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA) | |
1698 | #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA) | |
1699 | ||
1700 | /* Small Resource Data Type Tag Item Names */ | |
1701 | #define PCI_VPD_STIN_END 0x78 /* End */ | |
1702 | ||
1703 | #define PCI_VPD_SRDT_END PCI_VPD_STIN_END | |
1704 | ||
1705 | #define PCI_VPD_SRDT_TIN_MASK 0x78 | |
1706 | #define PCI_VPD_SRDT_LEN_MASK 0x07 | |
1707 | ||
1708 | #define PCI_VPD_LRDT_TAG_SIZE 3 | |
1709 | #define PCI_VPD_SRDT_TAG_SIZE 1 | |
a2ce7662 | 1710 | |
e1d5bdab MC |
1711 | #define PCI_VPD_INFO_FLD_HDR_SIZE 3 |
1712 | ||
4067a854 MC |
1713 | #define PCI_VPD_RO_KEYWORD_PARTNO "PN" |
1714 | #define PCI_VPD_RO_KEYWORD_MFR_ID "MN" | |
1715 | #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0" | |
d4894f3e | 1716 | #define PCI_VPD_RO_KEYWORD_CHKSUM "RV" |
4067a854 | 1717 | |
a2ce7662 MC |
1718 | /** |
1719 | * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length | |
1720 | * @lrdt: Pointer to the beginning of the Large Resource Data Type tag | |
1721 | * | |
1722 | * Returns the extracted Large Resource Data Type length. | |
1723 | */ | |
1724 | static inline u16 pci_vpd_lrdt_size(const u8 *lrdt) | |
1725 | { | |
1726 | return (u16)lrdt[1] + ((u16)lrdt[2] << 8); | |
1727 | } | |
1728 | ||
7ad506fa MC |
1729 | /** |
1730 | * pci_vpd_srdt_size - Extracts the Small Resource Data Type length | |
1731 | * @lrdt: Pointer to the beginning of the Small Resource Data Type tag | |
1732 | * | |
1733 | * Returns the extracted Small Resource Data Type length. | |
1734 | */ | |
1735 | static inline u8 pci_vpd_srdt_size(const u8 *srdt) | |
1736 | { | |
1737 | return (*srdt) & PCI_VPD_SRDT_LEN_MASK; | |
1738 | } | |
1739 | ||
e1d5bdab MC |
1740 | /** |
1741 | * pci_vpd_info_field_size - Extracts the information field length | |
1742 | * @lrdt: Pointer to the beginning of an information field header | |
1743 | * | |
1744 | * Returns the extracted information field length. | |
1745 | */ | |
1746 | static inline u8 pci_vpd_info_field_size(const u8 *info_field) | |
1747 | { | |
1748 | return info_field[2]; | |
1749 | } | |
1750 | ||
b55ac1b2 MC |
1751 | /** |
1752 | * pci_vpd_find_tag - Locates the Resource Data Type tag provided | |
1753 | * @buf: Pointer to buffered vpd data | |
1754 | * @off: The offset into the buffer at which to begin the search | |
1755 | * @len: The length of the vpd buffer | |
1756 | * @rdt: The Resource Data Type to search for | |
1757 | * | |
1758 | * Returns the index where the Resource Data Type was found or | |
1759 | * -ENOENT otherwise. | |
1760 | */ | |
1761 | int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt); | |
1762 | ||
4067a854 MC |
1763 | /** |
1764 | * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD | |
1765 | * @buf: Pointer to buffered vpd data | |
1766 | * @off: The offset into the buffer at which to begin the search | |
1767 | * @len: The length of the buffer area, relative to off, in which to search | |
1768 | * @kw: The keyword to search for | |
1769 | * | |
1770 | * Returns the index where the information field keyword was found or | |
1771 | * -ENOENT otherwise. | |
1772 | */ | |
1773 | int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, | |
1774 | unsigned int len, const char *kw); | |
1775 | ||
98d9f30c BH |
1776 | /* PCI <-> OF binding helpers */ |
1777 | #ifdef CONFIG_OF | |
1778 | struct device_node; | |
f39d5b72 BH |
1779 | void pci_set_of_node(struct pci_dev *dev); |
1780 | void pci_release_of_node(struct pci_dev *dev); | |
1781 | void pci_set_bus_of_node(struct pci_bus *bus); | |
1782 | void pci_release_bus_of_node(struct pci_bus *bus); | |
98d9f30c BH |
1783 | |
1784 | /* Arch may override this (weak) */ | |
723ec4d0 | 1785 | struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus); |
98d9f30c | 1786 | |
3df425f3 JC |
1787 | static inline struct device_node * |
1788 | pci_device_to_OF_node(const struct pci_dev *pdev) | |
64099d98 BH |
1789 | { |
1790 | return pdev ? pdev->dev.of_node : NULL; | |
1791 | } | |
1792 | ||
ef3b4f8c BH |
1793 | static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus) |
1794 | { | |
1795 | return bus ? bus->dev.of_node : NULL; | |
1796 | } | |
1797 | ||
98d9f30c BH |
1798 | #else /* CONFIG_OF */ |
1799 | static inline void pci_set_of_node(struct pci_dev *dev) { } | |
1800 | static inline void pci_release_of_node(struct pci_dev *dev) { } | |
1801 | static inline void pci_set_bus_of_node(struct pci_bus *bus) { } | |
1802 | static inline void pci_release_bus_of_node(struct pci_bus *bus) { } | |
1803 | #endif /* CONFIG_OF */ | |
1804 | ||
eb740b5f GS |
1805 | #ifdef CONFIG_EEH |
1806 | static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev) | |
1807 | { | |
1808 | return pdev->dev.archdata.edev; | |
1809 | } | |
1810 | #endif | |
1811 | ||
166e9278 OBC |
1812 | /** |
1813 | * pci_find_upstream_pcie_bridge - find upstream PCIe-to-PCI bridge of a device | |
1814 | * @pdev: the PCI device | |
1815 | * | |
1816 | * if the device is PCIE, return NULL | |
1817 | * if the device isn't connected to a PCIe bridge (that is its parent is a | |
1818 | * legacy PCI bridge and the bridge is directly connected to bus 0), return its | |
1819 | * parent | |
1820 | */ | |
1821 | struct pci_dev *pci_find_upstream_pcie_bridge(struct pci_dev *pdev); | |
1822 | ||
1da177e4 | 1823 | #endif /* LINUX_PCI_H */ |