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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 | */ | |
16 | ||
17 | #ifndef LINUX_PCI_H | |
18 | #define LINUX_PCI_H | |
19 | ||
4352dfd5 GKH |
20 | /* Include the pci register defines */ |
21 | #include <linux/pci_regs.h> | |
1da177e4 | 22 | |
1da177e4 LT |
23 | /* |
24 | * The PCI interface treats multi-function devices as independent | |
25 | * devices. The slot/function address of each device is encoded | |
26 | * in a single byte as follows: | |
27 | * | |
28 | * 7:3 = slot | |
29 | * 2:0 = function | |
30 | */ | |
05cca6e5 | 31 | #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
1da177e4 LT |
32 | #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
33 | #define PCI_FUNC(devfn) ((devfn) & 0x07) | |
34 | ||
35 | /* Ioctls for /proc/bus/pci/X/Y nodes. */ | |
36 | #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) | |
37 | #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ | |
38 | #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ | |
39 | #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ | |
40 | #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ | |
41 | ||
42 | #ifdef __KERNEL__ | |
43 | ||
778382e0 DW |
44 | #include <linux/mod_devicetable.h> |
45 | ||
1da177e4 | 46 | #include <linux/types.h> |
1da177e4 LT |
47 | #include <linux/ioport.h> |
48 | #include <linux/list.h> | |
4a7fb636 | 49 | #include <linux/compiler.h> |
1da177e4 | 50 | #include <linux/errno.h> |
bae94d02 | 51 | #include <asm/atomic.h> |
1da177e4 LT |
52 | #include <linux/device.h> |
53 | ||
7e7a43c3 AB |
54 | /* Include the ID list */ |
55 | #include <linux/pci_ids.h> | |
56 | ||
1da177e4 LT |
57 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
58 | enum pci_mmap_state { | |
59 | pci_mmap_io, | |
60 | pci_mmap_mem | |
61 | }; | |
62 | ||
63 | /* This defines the direction arg to the DMA mapping routines. */ | |
64 | #define PCI_DMA_BIDIRECTIONAL 0 | |
65 | #define PCI_DMA_TODEVICE 1 | |
66 | #define PCI_DMA_FROMDEVICE 2 | |
67 | #define PCI_DMA_NONE 3 | |
68 | ||
1da177e4 LT |
69 | #define DEVICE_COUNT_RESOURCE 12 |
70 | ||
71 | typedef int __bitwise pci_power_t; | |
72 | ||
4352dfd5 GKH |
73 | #define PCI_D0 ((pci_power_t __force) 0) |
74 | #define PCI_D1 ((pci_power_t __force) 1) | |
75 | #define PCI_D2 ((pci_power_t __force) 2) | |
1da177e4 LT |
76 | #define PCI_D3hot ((pci_power_t __force) 3) |
77 | #define PCI_D3cold ((pci_power_t __force) 4) | |
3fe9d19f | 78 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
438510f6 | 79 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
1da177e4 | 80 | |
392a1ce7 LV |
81 | /** The pci_channel state describes connectivity between the CPU and |
82 | * the pci device. If some PCI bus between here and the pci device | |
83 | * has crashed or locked up, this info is reflected here. | |
84 | */ | |
85 | typedef unsigned int __bitwise pci_channel_state_t; | |
86 | ||
87 | enum pci_channel_state { | |
88 | /* I/O channel is in normal state */ | |
89 | pci_channel_io_normal = (__force pci_channel_state_t) 1, | |
90 | ||
91 | /* I/O to channel is blocked */ | |
92 | pci_channel_io_frozen = (__force pci_channel_state_t) 2, | |
93 | ||
94 | /* PCI card is dead */ | |
95 | pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, | |
96 | }; | |
97 | ||
f7bdd12d BK |
98 | typedef unsigned int __bitwise pcie_reset_state_t; |
99 | ||
100 | enum pcie_reset_state { | |
101 | /* Reset is NOT asserted (Use to deassert reset) */ | |
102 | pcie_deassert_reset = (__force pcie_reset_state_t) 1, | |
103 | ||
104 | /* Use #PERST to reset PCI-E device */ | |
105 | pcie_warm_reset = (__force pcie_reset_state_t) 2, | |
106 | ||
107 | /* Use PCI-E Hot Reset to reset device */ | |
108 | pcie_hot_reset = (__force pcie_reset_state_t) 3 | |
109 | }; | |
110 | ||
ba698ad4 DM |
111 | typedef unsigned short __bitwise pci_dev_flags_t; |
112 | enum pci_dev_flags { | |
113 | /* INTX_DISABLE in PCI_COMMAND register disables MSI | |
114 | * generation too. | |
115 | */ | |
116 | PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, | |
117 | }; | |
118 | ||
6e325a62 MT |
119 | typedef unsigned short __bitwise pci_bus_flags_t; |
120 | enum pci_bus_flags { | |
d556ad4b PO |
121 | PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, |
122 | PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, | |
6e325a62 MT |
123 | }; |
124 | ||
41017f0c SL |
125 | struct pci_cap_saved_state { |
126 | struct hlist_node next; | |
127 | char cap_nr; | |
128 | u32 data[0]; | |
129 | }; | |
130 | ||
1da177e4 LT |
131 | /* |
132 | * The pci_dev structure is used to describe PCI devices. | |
133 | */ | |
134 | struct pci_dev { | |
135 | struct list_head global_list; /* node in list of all PCI devices */ | |
136 | struct list_head bus_list; /* node in per-bus list */ | |
137 | struct pci_bus *bus; /* bus this device is on */ | |
138 | struct pci_bus *subordinate; /* bus this device bridges to */ | |
139 | ||
140 | void *sysdata; /* hook for sys-specific extension */ | |
141 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ | |
142 | ||
143 | unsigned int devfn; /* encoded device & function index */ | |
144 | unsigned short vendor; | |
145 | unsigned short device; | |
146 | unsigned short subsystem_vendor; | |
147 | unsigned short subsystem_device; | |
148 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ | |
b8a3a521 | 149 | u8 revision; /* PCI revision, low byte of class word */ |
1da177e4 | 150 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
994a65e2 | 151 | u8 pcie_type; /* PCI-E device/port type */ |
1da177e4 | 152 | u8 rom_base_reg; /* which config register controls the ROM */ |
ffeff788 | 153 | u8 pin; /* which interrupt pin this device uses */ |
1da177e4 LT |
154 | |
155 | struct pci_driver *driver; /* which driver has allocated this device */ | |
156 | u64 dma_mask; /* Mask of the bits of bus address this | |
157 | device implements. Normally this is | |
158 | 0xffffffff. You only need to change | |
159 | this if your device has broken DMA | |
160 | or supports 64-bit transfers. */ | |
161 | ||
4d57cdfa FT |
162 | struct device_dma_parameters dma_parms; |
163 | ||
1da177e4 LT |
164 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
165 | this is D0-D3, D0 being fully functional, | |
166 | and D3 being off. */ | |
167 | ||
392a1ce7 | 168 | pci_channel_state_t error_state; /* current connectivity state */ |
1da177e4 LT |
169 | struct device dev; /* Generic device interface */ |
170 | ||
1da177e4 LT |
171 | int cfg_size; /* Size of configuration space */ |
172 | ||
173 | /* | |
174 | * Instead of touching interrupt line and base address registers | |
175 | * directly, use the values stored here. They might be different! | |
176 | */ | |
177 | unsigned int irq; | |
178 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ | |
179 | ||
180 | /* These fields are used by common fixups */ | |
181 | unsigned int transparent:1; /* Transparent PCI bridge */ | |
182 | unsigned int multifunction:1;/* Part of multi-function device */ | |
183 | /* keep track of device state */ | |
1da177e4 | 184 | unsigned int is_busmaster:1; /* device is busmaster */ |
4602b88d | 185 | unsigned int no_msi:1; /* device may not use msi */ |
ffadcc2f | 186 | unsigned int no_d1d2:1; /* only allow d0 or d3 */ |
e04b0ea2 | 187 | unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ |
bd8481e1 | 188 | unsigned int broken_parity_status:1; /* Device generates false positive parity */ |
99dc804d SL |
189 | unsigned int msi_enabled:1; |
190 | unsigned int msix_enabled:1; | |
9ac7849e | 191 | unsigned int is_managed:1; |
994a65e2 | 192 | unsigned int is_pcie:1; |
ba698ad4 | 193 | pci_dev_flags_t dev_flags; |
bae94d02 | 194 | atomic_t enable_cnt; /* pci_enable_device has been called */ |
4602b88d | 195 | |
1da177e4 | 196 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
41017f0c | 197 | struct hlist_head saved_cap_space; |
1da177e4 LT |
198 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
199 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ | |
200 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ | |
ded86d8d | 201 | #ifdef CONFIG_PCI_MSI |
4aa9bc95 | 202 | struct list_head msi_list; |
ded86d8d | 203 | #endif |
1da177e4 LT |
204 | }; |
205 | ||
65891215 ME |
206 | extern struct pci_dev *alloc_pci_dev(void); |
207 | ||
1da177e4 LT |
208 | #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) |
209 | #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) | |
210 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) | |
211 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) | |
212 | ||
a7369f1f LV |
213 | static inline int pci_channel_offline(struct pci_dev *pdev) |
214 | { | |
215 | return (pdev->error_state != pci_channel_io_normal); | |
216 | } | |
217 | ||
41017f0c | 218 | static inline struct pci_cap_saved_state *pci_find_saved_cap( |
05cca6e5 | 219 | struct pci_dev *pci_dev, char cap) |
41017f0c SL |
220 | { |
221 | struct pci_cap_saved_state *tmp; | |
222 | struct hlist_node *pos; | |
223 | ||
224 | hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { | |
225 | if (tmp->cap_nr == cap) | |
226 | return tmp; | |
227 | } | |
228 | return NULL; | |
229 | } | |
230 | ||
231 | static inline void pci_add_saved_cap(struct pci_dev *pci_dev, | |
232 | struct pci_cap_saved_state *new_cap) | |
233 | { | |
234 | hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space); | |
235 | } | |
236 | ||
1da177e4 LT |
237 | /* |
238 | * For PCI devices, the region numbers are assigned this way: | |
239 | * | |
240 | * 0-5 standard PCI regions | |
241 | * 6 expansion ROM | |
242 | * 7-10 bridges: address space assigned to buses behind the bridge | |
243 | */ | |
244 | ||
4352dfd5 GKH |
245 | #define PCI_ROM_RESOURCE 6 |
246 | #define PCI_BRIDGE_RESOURCES 7 | |
247 | #define PCI_NUM_RESOURCES 11 | |
1da177e4 LT |
248 | |
249 | #ifndef PCI_BUS_NUM_RESOURCES | |
4352dfd5 | 250 | #define PCI_BUS_NUM_RESOURCES 8 |
1da177e4 | 251 | #endif |
4352dfd5 GKH |
252 | |
253 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ | |
1da177e4 LT |
254 | |
255 | struct pci_bus { | |
256 | struct list_head node; /* node in list of buses */ | |
257 | struct pci_bus *parent; /* parent bus this bridge is on */ | |
258 | struct list_head children; /* list of child buses */ | |
259 | struct list_head devices; /* list of devices on this bus */ | |
260 | struct pci_dev *self; /* bridge device as seen by parent */ | |
261 | struct resource *resource[PCI_BUS_NUM_RESOURCES]; | |
262 | /* address space routed to this bus */ | |
263 | ||
264 | struct pci_ops *ops; /* configuration access functions */ | |
265 | void *sysdata; /* hook for sys-specific extension */ | |
266 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ | |
267 | ||
268 | unsigned char number; /* bus number */ | |
269 | unsigned char primary; /* number of primary bridge */ | |
270 | unsigned char secondary; /* number of secondary bridge */ | |
271 | unsigned char subordinate; /* max number of subordinate buses */ | |
272 | ||
273 | char name[48]; | |
274 | ||
275 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ | |
6e325a62 | 276 | pci_bus_flags_t bus_flags; /* Inherited by child busses */ |
1da177e4 | 277 | struct device *bridge; |
fd7d1ced | 278 | struct device dev; |
1da177e4 LT |
279 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
280 | struct bin_attribute *legacy_mem; /* legacy mem */ | |
cc74d96f | 281 | unsigned int is_added:1; |
1da177e4 LT |
282 | }; |
283 | ||
284 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) | |
fd7d1ced | 285 | #define to_pci_bus(n) container_of(n, struct pci_bus, dev) |
1da177e4 LT |
286 | |
287 | /* | |
288 | * Error values that may be returned by PCI functions. | |
289 | */ | |
290 | #define PCIBIOS_SUCCESSFUL 0x00 | |
291 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 | |
292 | #define PCIBIOS_BAD_VENDOR_ID 0x83 | |
293 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 | |
294 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 | |
295 | #define PCIBIOS_SET_FAILED 0x88 | |
296 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 | |
297 | ||
298 | /* Low-level architecture-dependent routines */ | |
299 | ||
300 | struct pci_ops { | |
301 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); | |
302 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); | |
303 | }; | |
304 | ||
b6ce068a MW |
305 | /* |
306 | * ACPI needs to be able to access PCI config space before we've done a | |
307 | * PCI bus scan and created pci_bus structures. | |
308 | */ | |
309 | extern int raw_pci_read(unsigned int domain, unsigned int bus, | |
310 | unsigned int devfn, int reg, int len, u32 *val); | |
311 | extern int raw_pci_write(unsigned int domain, unsigned int bus, | |
312 | unsigned int devfn, int reg, int len, u32 val); | |
1da177e4 LT |
313 | |
314 | struct pci_bus_region { | |
c40a22e0 BH |
315 | resource_size_t start; |
316 | resource_size_t end; | |
1da177e4 LT |
317 | }; |
318 | ||
319 | struct pci_dynids { | |
320 | spinlock_t lock; /* protects list, index */ | |
321 | struct list_head list; /* for IDs added at runtime */ | |
322 | unsigned int use_driver_data:1; /* pci_driver->driver_data is used */ | |
323 | }; | |
324 | ||
392a1ce7 LV |
325 | /* ---------------------------------------------------------------- */ |
326 | /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides | |
579082df | 327 | * a set of callbacks in struct pci_error_handlers, then that device driver |
392a1ce7 LV |
328 | * will be notified of PCI bus errors, and will be driven to recovery |
329 | * when an error occurs. | |
330 | */ | |
331 | ||
332 | typedef unsigned int __bitwise pci_ers_result_t; | |
333 | ||
334 | enum pci_ers_result { | |
335 | /* no result/none/not supported in device driver */ | |
336 | PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, | |
337 | ||
338 | /* Device driver can recover without slot reset */ | |
339 | PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, | |
340 | ||
341 | /* Device driver wants slot to be reset. */ | |
342 | PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, | |
343 | ||
344 | /* Device has completely failed, is unrecoverable */ | |
345 | PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, | |
346 | ||
347 | /* Device driver is fully recovered and operational */ | |
348 | PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, | |
349 | }; | |
350 | ||
351 | /* PCI bus error event callbacks */ | |
05cca6e5 | 352 | struct pci_error_handlers { |
392a1ce7 LV |
353 | /* PCI bus error detected on this device */ |
354 | pci_ers_result_t (*error_detected)(struct pci_dev *dev, | |
05cca6e5 | 355 | enum pci_channel_state error); |
392a1ce7 LV |
356 | |
357 | /* MMIO has been re-enabled, but not DMA */ | |
358 | pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); | |
359 | ||
360 | /* PCI Express link has been reset */ | |
361 | pci_ers_result_t (*link_reset)(struct pci_dev *dev); | |
362 | ||
363 | /* PCI slot has been reset */ | |
364 | pci_ers_result_t (*slot_reset)(struct pci_dev *dev); | |
365 | ||
366 | /* Device driver may resume normal operations */ | |
367 | void (*resume)(struct pci_dev *dev); | |
368 | }; | |
369 | ||
370 | /* ---------------------------------------------------------------- */ | |
371 | ||
1da177e4 LT |
372 | struct module; |
373 | struct pci_driver { | |
374 | struct list_head node; | |
375 | char *name; | |
1da177e4 LT |
376 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
377 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ | |
378 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
379 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ | |
cbd69dbb LT |
380 | int (*suspend_late) (struct pci_dev *dev, pm_message_t state); |
381 | int (*resume_early) (struct pci_dev *dev); | |
1da177e4 | 382 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
c8958177 | 383 | void (*shutdown) (struct pci_dev *dev); |
1da177e4 | 384 | |
392a1ce7 | 385 | struct pci_error_handlers *err_handler; |
1da177e4 LT |
386 | struct device_driver driver; |
387 | struct pci_dynids dynids; | |
388 | }; | |
389 | ||
05cca6e5 | 390 | #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) |
1da177e4 | 391 | |
90a1ba0c | 392 | /** |
9f9351bb | 393 | * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table |
90a1ba0c JB |
394 | * @_table: device table name |
395 | * | |
396 | * This macro is used to create a struct pci_device_id array (a device table) | |
397 | * in a generic manner. | |
398 | */ | |
9f9351bb | 399 | #define DEFINE_PCI_DEVICE_TABLE(_table) \ |
90a1ba0c JB |
400 | const struct pci_device_id _table[] __devinitconst |
401 | ||
1da177e4 LT |
402 | /** |
403 | * PCI_DEVICE - macro used to describe a specific pci device | |
404 | * @vend: the 16 bit PCI Vendor ID | |
405 | * @dev: the 16 bit PCI Device ID | |
406 | * | |
407 | * This macro is used to create a struct pci_device_id that matches a | |
408 | * specific device. The subvendor and subdevice fields will be set to | |
409 | * PCI_ANY_ID. | |
410 | */ | |
411 | #define PCI_DEVICE(vend,dev) \ | |
412 | .vendor = (vend), .device = (dev), \ | |
413 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
414 | ||
415 | /** | |
416 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class | |
417 | * @dev_class: the class, subclass, prog-if triple for this device | |
418 | * @dev_class_mask: the class mask for this device | |
419 | * | |
420 | * This macro is used to create a struct pci_device_id that matches a | |
4352dfd5 | 421 | * specific PCI class. The vendor, device, subvendor, and subdevice |
1da177e4 LT |
422 | * fields will be set to PCI_ANY_ID. |
423 | */ | |
424 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ | |
425 | .class = (dev_class), .class_mask = (dev_class_mask), \ | |
426 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ | |
427 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
428 | ||
1597cacb AC |
429 | /** |
430 | * PCI_VDEVICE - macro used to describe a specific pci device in short form | |
431 | * @vend: the vendor name | |
432 | * @dev: the 16 bit PCI Device ID | |
433 | * | |
434 | * This macro is used to create a struct pci_device_id that matches a | |
435 | * specific PCI device. The subvendor, and subdevice fields will be set | |
436 | * to PCI_ANY_ID. The macro allows the next field to follow as the device | |
437 | * private data. | |
438 | */ | |
439 | ||
440 | #define PCI_VDEVICE(vendor, device) \ | |
441 | PCI_VENDOR_ID_##vendor, (device), \ | |
442 | PCI_ANY_ID, PCI_ANY_ID, 0, 0 | |
443 | ||
1da177e4 LT |
444 | /* these external functions are only available when PCI support is enabled */ |
445 | #ifdef CONFIG_PCI | |
446 | ||
447 | extern struct bus_type pci_bus_type; | |
448 | ||
449 | /* Do NOT directly access these two variables, unless you are arch specific pci | |
450 | * code, or pci core code. */ | |
451 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ | |
452 | extern struct list_head pci_devices; /* list of all devices */ | |
ed4aaadb ZY |
453 | /* Some device drivers need know if pci is initiated */ |
454 | extern int no_pci_devices(void); | |
1da177e4 LT |
455 | |
456 | void pcibios_fixup_bus(struct pci_bus *); | |
4a7fb636 | 457 | int __must_check pcibios_enable_device(struct pci_dev *, int mask); |
05cca6e5 | 458 | char *pcibios_setup(char *str); |
1da177e4 LT |
459 | |
460 | /* Used only when drivers/pci/setup.c is used */ | |
e31dd6e4 GKH |
461 | void pcibios_align_resource(void *, struct resource *, resource_size_t, |
462 | resource_size_t); | |
1da177e4 LT |
463 | void pcibios_update_irq(struct pci_dev *, int irq); |
464 | ||
465 | /* Generic PCI functions used internally */ | |
466 | ||
467 | extern struct pci_bus *pci_find_bus(int domain, int busnr); | |
c431ada4 | 468 | void pci_bus_add_devices(struct pci_bus *bus); |
05cca6e5 GKH |
469 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, |
470 | struct pci_ops *ops, void *sysdata); | |
471 | static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, | |
472 | void *sysdata) | |
1da177e4 | 473 | { |
c431ada4 RS |
474 | struct pci_bus *root_bus; |
475 | root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); | |
476 | if (root_bus) | |
477 | pci_bus_add_devices(root_bus); | |
478 | return root_bus; | |
1da177e4 | 479 | } |
05cca6e5 GKH |
480 | struct pci_bus *pci_create_bus(struct device *parent, int bus, |
481 | struct pci_ops *ops, void *sysdata); | |
482 | struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, | |
483 | int busnr); | |
1da177e4 | 484 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
05cca6e5 | 485 | struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); |
cdb9b9f7 | 486 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
1da177e4 | 487 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
b19441af | 488 | int __must_check pci_bus_add_device(struct pci_dev *dev); |
1da177e4 | 489 | void pci_read_bridge_bases(struct pci_bus *child); |
05cca6e5 GKH |
490 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, |
491 | struct resource *res); | |
1da177e4 LT |
492 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
493 | extern struct pci_dev *pci_dev_get(struct pci_dev *dev); | |
494 | extern void pci_dev_put(struct pci_dev *dev); | |
495 | extern void pci_remove_bus(struct pci_bus *b); | |
496 | extern void pci_remove_bus_device(struct pci_dev *dev); | |
24f8aa9b | 497 | extern void pci_stop_bus_device(struct pci_dev *dev); |
b3743fa4 | 498 | void pci_setup_cardbus(struct pci_bus *bus); |
6b4b78fe | 499 | extern void pci_sort_breadthfirst(void); |
1da177e4 LT |
500 | |
501 | /* Generic PCI functions exported to card drivers */ | |
502 | ||
bd3989e0 | 503 | #ifdef CONFIG_PCI_LEGACY |
05cca6e5 GKH |
504 | struct pci_dev __deprecated *pci_find_device(unsigned int vendor, |
505 | unsigned int device, | |
506 | const struct pci_dev *from); | |
507 | struct pci_dev __deprecated *pci_find_slot(unsigned int bus, | |
508 | unsigned int devfn); | |
bd3989e0 JG |
509 | #endif /* CONFIG_PCI_LEGACY */ |
510 | ||
05cca6e5 GKH |
511 | int pci_find_capability(struct pci_dev *dev, int cap); |
512 | int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); | |
513 | int pci_find_ext_capability(struct pci_dev *dev, int cap); | |
514 | int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); | |
515 | int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); | |
29f3eb64 | 516 | struct pci_bus *pci_find_next_bus(const struct pci_bus *from); |
1da177e4 | 517 | |
d42552c3 AM |
518 | struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, |
519 | struct pci_dev *from); | |
520 | struct pci_dev *pci_get_device_reverse(unsigned int vendor, unsigned int device, | |
521 | struct pci_dev *from); | |
522 | ||
05cca6e5 | 523 | struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, |
1da177e4 LT |
524 | unsigned int ss_vendor, unsigned int ss_device, |
525 | struct pci_dev *from); | |
05cca6e5 GKH |
526 | struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); |
527 | struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); | |
528 | struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); | |
1da177e4 | 529 | int pci_dev_present(const struct pci_device_id *ids); |
d86f90f9 | 530 | const struct pci_device_id *pci_find_present(const struct pci_device_id *ids); |
1da177e4 | 531 | |
05cca6e5 GKH |
532 | int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, |
533 | int where, u8 *val); | |
534 | int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, | |
535 | int where, u16 *val); | |
536 | int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, | |
537 | int where, u32 *val); | |
538 | int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, | |
539 | int where, u8 val); | |
540 | int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, | |
541 | int where, u16 val); | |
542 | int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, | |
543 | int where, u32 val); | |
1da177e4 LT |
544 | |
545 | static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) | |
546 | { | |
05cca6e5 | 547 | return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
548 | } |
549 | static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) | |
550 | { | |
05cca6e5 | 551 | return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 552 | } |
05cca6e5 GKH |
553 | static inline int pci_read_config_dword(struct pci_dev *dev, int where, |
554 | u32 *val) | |
1da177e4 | 555 | { |
05cca6e5 | 556 | return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
557 | } |
558 | static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) | |
559 | { | |
05cca6e5 | 560 | return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
561 | } |
562 | static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) | |
563 | { | |
05cca6e5 | 564 | return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); |
1da177e4 | 565 | } |
05cca6e5 GKH |
566 | static inline int pci_write_config_dword(struct pci_dev *dev, int where, |
567 | u32 val) | |
1da177e4 | 568 | { |
05cca6e5 | 569 | return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); |
1da177e4 LT |
570 | } |
571 | ||
4a7fb636 | 572 | int __must_check pci_enable_device(struct pci_dev *dev); |
b718989d BH |
573 | int __must_check pci_enable_device_io(struct pci_dev *dev); |
574 | int __must_check pci_enable_device_mem(struct pci_dev *dev); | |
0b62e13b | 575 | int __must_check pci_reenable_device(struct pci_dev *); |
9ac7849e TH |
576 | int __must_check pcim_enable_device(struct pci_dev *pdev); |
577 | void pcim_pin_device(struct pci_dev *pdev); | |
578 | ||
579 | static inline int pci_is_managed(struct pci_dev *pdev) | |
580 | { | |
581 | return pdev->is_managed; | |
582 | } | |
583 | ||
1da177e4 LT |
584 | void pci_disable_device(struct pci_dev *dev); |
585 | void pci_set_master(struct pci_dev *dev); | |
f7bdd12d | 586 | int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); |
1da177e4 | 587 | #define HAVE_PCI_SET_MWI |
4a7fb636 | 588 | int __must_check pci_set_mwi(struct pci_dev *dev); |
694625c0 | 589 | int pci_try_set_mwi(struct pci_dev *dev); |
1da177e4 | 590 | void pci_clear_mwi(struct pci_dev *dev); |
a04ce0ff | 591 | void pci_intx(struct pci_dev *dev, int enable); |
f5f2b131 | 592 | void pci_msi_off(struct pci_dev *dev); |
9c8550ee LT |
593 | int pci_set_dma_mask(struct pci_dev *dev, u64 mask); |
594 | int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); | |
4d57cdfa | 595 | int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); |
59fc67de | 596 | int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); |
d556ad4b PO |
597 | int pcix_get_max_mmrbc(struct pci_dev *dev); |
598 | int pcix_get_mmrbc(struct pci_dev *dev); | |
599 | int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); | |
2637e5b5 | 600 | int pcie_get_readrq(struct pci_dev *dev); |
d556ad4b | 601 | int pcie_set_readrq(struct pci_dev *dev, int rq); |
064b53db | 602 | void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); |
4a7fb636 AM |
603 | int __must_check pci_assign_resource(struct pci_dev *dev, int i); |
604 | int __must_check pci_assign_resource_fixed(struct pci_dev *dev, int i); | |
c87deff7 | 605 | int pci_select_bars(struct pci_dev *dev, unsigned long flags); |
1da177e4 LT |
606 | |
607 | /* ROM control related routines */ | |
144a50ea | 608 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
1da177e4 | 609 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
d7ad2254 | 610 | size_t pci_get_rom_size(void __iomem *rom, size_t size); |
1da177e4 LT |
611 | |
612 | /* Power management related routines */ | |
613 | int pci_save_state(struct pci_dev *dev); | |
614 | int pci_restore_state(struct pci_dev *dev); | |
9c8550ee LT |
615 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
616 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); | |
617 | int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); | |
1da177e4 | 618 | |
ce5ccdef | 619 | /* Functions for PCI Hotplug drivers to use */ |
05cca6e5 | 620 | int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); |
ce5ccdef | 621 | |
1da177e4 LT |
622 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
623 | void pci_bus_assign_resources(struct pci_bus *bus); | |
624 | void pci_bus_size_bridges(struct pci_bus *bus); | |
625 | int pci_claim_resource(struct pci_dev *, int); | |
626 | void pci_assign_unassigned_resources(void); | |
627 | void pdev_enable_device(struct pci_dev *); | |
628 | void pdev_sort_resources(struct pci_dev *, struct resource_list *); | |
629 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), | |
630 | int (*)(struct pci_dev *, u8, u8)); | |
631 | #define HAVE_PCI_REQ_REGIONS 2 | |
4a7fb636 | 632 | int __must_check pci_request_regions(struct pci_dev *, const char *); |
1da177e4 | 633 | void pci_release_regions(struct pci_dev *); |
4a7fb636 | 634 | int __must_check pci_request_region(struct pci_dev *, int, const char *); |
1da177e4 | 635 | void pci_release_region(struct pci_dev *, int); |
c87deff7 HS |
636 | int pci_request_selected_regions(struct pci_dev *, int, const char *); |
637 | void pci_release_selected_regions(struct pci_dev *, int); | |
1da177e4 LT |
638 | |
639 | /* drivers/pci/bus.c */ | |
4a7fb636 AM |
640 | int __must_check pci_bus_alloc_resource(struct pci_bus *bus, |
641 | struct resource *res, resource_size_t size, | |
642 | resource_size_t align, resource_size_t min, | |
643 | unsigned int type_mask, | |
644 | void (*alignf)(void *, struct resource *, | |
645 | resource_size_t, resource_size_t), | |
646 | void *alignf_data); | |
1da177e4 LT |
647 | void pci_enable_bridges(struct pci_bus *bus); |
648 | ||
863b18f4 | 649 | /* Proper probing supporting hot-pluggable devices */ |
725522b5 GKH |
650 | int __must_check __pci_register_driver(struct pci_driver *, struct module *, |
651 | const char *mod_name); | |
4a7fb636 | 652 | static inline int __must_check pci_register_driver(struct pci_driver *driver) |
863b18f4 | 653 | { |
725522b5 | 654 | return __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME); |
863b18f4 L |
655 | } |
656 | ||
05cca6e5 GKH |
657 | void pci_unregister_driver(struct pci_driver *dev); |
658 | void pci_remove_behind_bridge(struct pci_dev *dev); | |
659 | struct pci_driver *pci_dev_driver(const struct pci_dev *dev); | |
660 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, | |
661 | struct pci_dev *dev); | |
662 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, | |
663 | int pass); | |
1da177e4 | 664 | |
cecf4864 PM |
665 | void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), |
666 | void *userdata); | |
ac7dc65a | 667 | int pci_cfg_space_size(struct pci_dev *dev); |
05cca6e5 | 668 | unsigned char pci_bus_max_busnr(struct pci_bus *bus); |
cecf4864 | 669 | |
1da177e4 LT |
670 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
671 | ||
672 | #include <linux/dmapool.h> | |
673 | ||
674 | #define pci_pool dma_pool | |
675 | #define pci_pool_create(name, pdev, size, align, allocation) \ | |
676 | dma_pool_create(name, &pdev->dev, size, align, allocation) | |
677 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) | |
678 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) | |
679 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) | |
680 | ||
e24c2d96 DM |
681 | enum pci_dma_burst_strategy { |
682 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, | |
683 | strategy_parameter is N/A */ | |
684 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter | |
685 | byte boundaries */ | |
686 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of | |
687 | strategy_parameter byte boundaries */ | |
688 | }; | |
689 | ||
1da177e4 LT |
690 | struct msix_entry { |
691 | u16 vector; /* kernel uses to write allocated vector */ | |
692 | u16 entry; /* driver uses to specify entry, OS writes */ | |
693 | }; | |
694 | ||
0366f8f7 | 695 | |
1da177e4 | 696 | #ifndef CONFIG_PCI_MSI |
05cca6e5 GKH |
697 | static inline int pci_enable_msi(struct pci_dev *dev) |
698 | { | |
699 | return -1; | |
700 | } | |
701 | ||
702 | static inline void pci_disable_msi(struct pci_dev *dev) | |
703 | { } | |
704 | ||
705 | static inline int pci_enable_msix(struct pci_dev *dev, | |
706 | struct msix_entry *entries, int nvec) | |
707 | { | |
708 | return -1; | |
709 | } | |
710 | ||
711 | static inline void pci_disable_msix(struct pci_dev *dev) | |
712 | { } | |
713 | ||
714 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) | |
715 | { } | |
716 | ||
717 | static inline void pci_restore_msi_state(struct pci_dev *dev) | |
718 | { } | |
1da177e4 | 719 | #else |
1da177e4 LT |
720 | extern int pci_enable_msi(struct pci_dev *dev); |
721 | extern void pci_disable_msi(struct pci_dev *dev); | |
05cca6e5 | 722 | extern int pci_enable_msix(struct pci_dev *dev, |
1da177e4 LT |
723 | struct msix_entry *entries, int nvec); |
724 | extern void pci_disable_msix(struct pci_dev *dev); | |
725 | extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); | |
94688cf2 | 726 | extern void pci_restore_msi_state(struct pci_dev *dev); |
1da177e4 LT |
727 | #endif |
728 | ||
8b955b0d | 729 | #ifdef CONFIG_HT_IRQ |
8b955b0d EB |
730 | /* The functions a driver should call */ |
731 | int ht_create_irq(struct pci_dev *dev, int idx); | |
732 | void ht_destroy_irq(unsigned int irq); | |
8b955b0d EB |
733 | #endif /* CONFIG_HT_IRQ */ |
734 | ||
e04b0ea2 BK |
735 | extern void pci_block_user_cfg_access(struct pci_dev *dev); |
736 | extern void pci_unblock_user_cfg_access(struct pci_dev *dev); | |
737 | ||
4352dfd5 GKH |
738 | /* |
739 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), | |
740 | * a PCI domain is defined to be a set of PCI busses which share | |
741 | * configuration space. | |
742 | */ | |
32a2eea7 JG |
743 | #ifdef CONFIG_PCI_DOMAINS |
744 | extern int pci_domains_supported; | |
745 | #else | |
746 | enum { pci_domains_supported = 0 }; | |
05cca6e5 GKH |
747 | static inline int pci_domain_nr(struct pci_bus *bus) |
748 | { | |
749 | return 0; | |
750 | } | |
751 | ||
4352dfd5 GKH |
752 | static inline int pci_proc_domain(struct pci_bus *bus) |
753 | { | |
754 | return 0; | |
755 | } | |
32a2eea7 | 756 | #endif /* CONFIG_PCI_DOMAINS */ |
1da177e4 | 757 | |
4352dfd5 | 758 | #else /* CONFIG_PCI is not enabled */ |
1da177e4 LT |
759 | |
760 | /* | |
761 | * If the system does not have PCI, clearly these return errors. Define | |
762 | * these as simple inline functions to avoid hair in drivers. | |
763 | */ | |
764 | ||
05cca6e5 GKH |
765 | #define _PCI_NOP(o, s, t) \ |
766 | static inline int pci_##o##_config_##s(struct pci_dev *dev, \ | |
767 | int where, t val) \ | |
1da177e4 | 768 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
05cca6e5 GKH |
769 | |
770 | #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ | |
771 | _PCI_NOP(o, word, u16 x) \ | |
772 | _PCI_NOP(o, dword, u32 x) | |
1da177e4 LT |
773 | _PCI_NOP_ALL(read, *) |
774 | _PCI_NOP_ALL(write,) | |
775 | ||
05cca6e5 GKH |
776 | static inline struct pci_dev *pci_find_device(unsigned int vendor, |
777 | unsigned int device, | |
778 | const struct pci_dev *from) | |
779 | { | |
780 | return NULL; | |
781 | } | |
1da177e4 | 782 | |
05cca6e5 GKH |
783 | static inline struct pci_dev *pci_find_slot(unsigned int bus, |
784 | unsigned int devfn) | |
785 | { | |
786 | return NULL; | |
787 | } | |
1da177e4 | 788 | |
d42552c3 | 789 | static inline struct pci_dev *pci_get_device(unsigned int vendor, |
05cca6e5 GKH |
790 | unsigned int device, |
791 | struct pci_dev *from) | |
792 | { | |
793 | return NULL; | |
794 | } | |
d42552c3 AM |
795 | |
796 | static inline struct pci_dev *pci_get_device_reverse(unsigned int vendor, | |
05cca6e5 GKH |
797 | unsigned int device, |
798 | struct pci_dev *from) | |
799 | { | |
800 | return NULL; | |
801 | } | |
1da177e4 | 802 | |
05cca6e5 GKH |
803 | static inline struct pci_dev *pci_get_subsys(unsigned int vendor, |
804 | unsigned int device, | |
805 | unsigned int ss_vendor, | |
806 | unsigned int ss_device, | |
807 | struct pci_dev *from) | |
808 | { | |
809 | return NULL; | |
810 | } | |
1da177e4 | 811 | |
05cca6e5 GKH |
812 | static inline struct pci_dev *pci_get_class(unsigned int class, |
813 | struct pci_dev *from) | |
814 | { | |
815 | return NULL; | |
816 | } | |
1da177e4 LT |
817 | |
818 | #define pci_dev_present(ids) (0) | |
ed4aaadb | 819 | #define no_pci_devices() (1) |
d86f90f9 | 820 | #define pci_find_present(ids) (NULL) |
1da177e4 LT |
821 | #define pci_dev_put(dev) do { } while (0) |
822 | ||
05cca6e5 GKH |
823 | static inline void pci_set_master(struct pci_dev *dev) |
824 | { } | |
825 | ||
826 | static inline int pci_enable_device(struct pci_dev *dev) | |
827 | { | |
828 | return -EIO; | |
829 | } | |
830 | ||
831 | static inline void pci_disable_device(struct pci_dev *dev) | |
832 | { } | |
833 | ||
834 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) | |
835 | { | |
836 | return -EIO; | |
837 | } | |
838 | ||
4d57cdfa FT |
839 | static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, |
840 | unsigned int size) | |
841 | { | |
842 | return -EIO; | |
843 | } | |
844 | ||
59fc67de FT |
845 | static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, |
846 | unsigned long mask) | |
847 | { | |
848 | return -EIO; | |
849 | } | |
850 | ||
05cca6e5 GKH |
851 | static inline int pci_assign_resource(struct pci_dev *dev, int i) |
852 | { | |
853 | return -EBUSY; | |
854 | } | |
855 | ||
856 | static inline int __pci_register_driver(struct pci_driver *drv, | |
857 | struct module *owner) | |
858 | { | |
859 | return 0; | |
860 | } | |
861 | ||
862 | static inline int pci_register_driver(struct pci_driver *drv) | |
863 | { | |
864 | return 0; | |
865 | } | |
866 | ||
867 | static inline void pci_unregister_driver(struct pci_driver *drv) | |
868 | { } | |
869 | ||
870 | static inline int pci_find_capability(struct pci_dev *dev, int cap) | |
871 | { | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, | |
876 | int cap) | |
877 | { | |
878 | return 0; | |
879 | } | |
880 | ||
881 | static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) | |
882 | { | |
883 | return 0; | |
884 | } | |
885 | ||
1da177e4 | 886 | /* Power management related routines */ |
05cca6e5 GKH |
887 | static inline int pci_save_state(struct pci_dev *dev) |
888 | { | |
889 | return 0; | |
890 | } | |
891 | ||
892 | static inline int pci_restore_state(struct pci_dev *dev) | |
893 | { | |
894 | return 0; | |
895 | } | |
1da177e4 | 896 | |
05cca6e5 GKH |
897 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) |
898 | { | |
899 | return 0; | |
900 | } | |
901 | ||
902 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, | |
903 | pm_message_t state) | |
904 | { | |
905 | return PCI_D0; | |
906 | } | |
907 | ||
908 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, | |
909 | int enable) | |
910 | { | |
911 | return 0; | |
912 | } | |
913 | ||
914 | static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) | |
915 | { | |
916 | return -EIO; | |
917 | } | |
918 | ||
919 | static inline void pci_release_regions(struct pci_dev *dev) | |
920 | { } | |
0da0ead9 | 921 | |
a46e8126 KG |
922 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
923 | ||
05cca6e5 GKH |
924 | static inline void pci_block_user_cfg_access(struct pci_dev *dev) |
925 | { } | |
926 | ||
927 | static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) | |
928 | { } | |
e04b0ea2 | 929 | |
d80d0217 RD |
930 | static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) |
931 | { return NULL; } | |
932 | ||
933 | static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, | |
934 | unsigned int devfn) | |
935 | { return NULL; } | |
936 | ||
937 | static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, | |
938 | unsigned int devfn) | |
939 | { return NULL; } | |
940 | ||
4352dfd5 | 941 | #endif /* CONFIG_PCI */ |
1da177e4 | 942 | |
4352dfd5 GKH |
943 | /* Include architecture-dependent settings and functions */ |
944 | ||
945 | #include <asm/pci.h> | |
1da177e4 LT |
946 | |
947 | /* these helpers provide future and backwards compatibility | |
948 | * for accessing popular PCI BAR info */ | |
05cca6e5 GKH |
949 | #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) |
950 | #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) | |
951 | #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) | |
1da177e4 | 952 | #define pci_resource_len(dev,bar) \ |
05cca6e5 GKH |
953 | ((pci_resource_start((dev), (bar)) == 0 && \ |
954 | pci_resource_end((dev), (bar)) == \ | |
955 | pci_resource_start((dev), (bar))) ? 0 : \ | |
956 | \ | |
957 | (pci_resource_end((dev), (bar)) - \ | |
958 | pci_resource_start((dev), (bar)) + 1)) | |
1da177e4 LT |
959 | |
960 | /* Similar to the helpers above, these manipulate per-pci_dev | |
961 | * driver-specific data. They are really just a wrapper around | |
962 | * the generic device structure functions of these calls. | |
963 | */ | |
05cca6e5 | 964 | static inline void *pci_get_drvdata(struct pci_dev *pdev) |
1da177e4 LT |
965 | { |
966 | return dev_get_drvdata(&pdev->dev); | |
967 | } | |
968 | ||
05cca6e5 | 969 | static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) |
1da177e4 LT |
970 | { |
971 | dev_set_drvdata(&pdev->dev, data); | |
972 | } | |
973 | ||
974 | /* If you want to know what to call your pci_dev, ask this function. | |
975 | * Again, it's a wrapper around the generic device. | |
976 | */ | |
977 | static inline char *pci_name(struct pci_dev *pdev) | |
978 | { | |
979 | return pdev->dev.bus_id; | |
980 | } | |
981 | ||
2311b1f2 ME |
982 | |
983 | /* Some archs don't want to expose struct resource to userland as-is | |
984 | * in sysfs and /proc | |
985 | */ | |
986 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER | |
987 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
05cca6e5 | 988 | const struct resource *rsrc, resource_size_t *start, |
e31dd6e4 | 989 | resource_size_t *end) |
2311b1f2 ME |
990 | { |
991 | *start = rsrc->start; | |
992 | *end = rsrc->end; | |
993 | } | |
994 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ | |
995 | ||
996 | ||
1da177e4 LT |
997 | /* |
998 | * The world is not perfect and supplies us with broken PCI devices. | |
999 | * For at least a part of these bugs we need a work-around, so both | |
1000 | * generic (drivers/pci/quirks.c) and per-architecture code can define | |
1001 | * fixup hooks to be called for particular buggy devices. | |
1002 | */ | |
1003 | ||
1004 | struct pci_fixup { | |
1005 | u16 vendor, device; /* You can use PCI_ANY_ID here of course */ | |
1006 | void (*hook)(struct pci_dev *dev); | |
1007 | }; | |
1008 | ||
1009 | enum pci_fixup_pass { | |
1010 | pci_fixup_early, /* Before probing BARs */ | |
1011 | pci_fixup_header, /* After reading configuration header */ | |
1012 | pci_fixup_final, /* Final phase of device fixups */ | |
1013 | pci_fixup_enable, /* pci_enable_device() time */ | |
1597cacb | 1014 | pci_fixup_resume, /* pci_enable_device() time */ |
1da177e4 LT |
1015 | }; |
1016 | ||
1017 | /* Anonymous variables would be nice... */ | |
1018 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ | |
3ff6eecc | 1019 | static const struct pci_fixup __pci_fixup_##name __used \ |
1da177e4 LT |
1020 | __attribute__((__section__(#section))) = { vendor, device, hook }; |
1021 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ | |
1022 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
1023 | vendor##device##hook, vendor, device, hook) | |
1024 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ | |
1025 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
1026 | vendor##device##hook, vendor, device, hook) | |
1027 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ | |
1028 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
1029 | vendor##device##hook, vendor, device, hook) | |
1030 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ | |
1031 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
1032 | vendor##device##hook, vendor, device, hook) | |
1597cacb AC |
1033 | #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ |
1034 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ | |
1035 | resume##vendor##device##hook, vendor, device, hook) | |
1da177e4 LT |
1036 | |
1037 | ||
1038 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); | |
1039 | ||
05cca6e5 | 1040 | void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); |
5ea81769 | 1041 | void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); |
05cca6e5 | 1042 | void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); |
5ea81769 | 1043 | int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); |
916fbfb7 TH |
1044 | int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, |
1045 | const char *name); | |
ec04b075 | 1046 | void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask); |
5ea81769 | 1047 | |
1da177e4 | 1048 | extern int pci_pci_problems; |
236561e5 | 1049 | #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ |
1da177e4 LT |
1050 | #define PCIPCI_TRITON 2 |
1051 | #define PCIPCI_NATOMA 4 | |
1052 | #define PCIPCI_VIAETBF 8 | |
1053 | #define PCIPCI_VSFX 16 | |
236561e5 AC |
1054 | #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ |
1055 | #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ | |
1da177e4 | 1056 | |
4516a618 AN |
1057 | extern unsigned long pci_cardbus_io_size; |
1058 | extern unsigned long pci_cardbus_mem_size; | |
1059 | ||
a2cd52ca | 1060 | extern int pcibios_add_platform_entries(struct pci_dev *dev); |
575e3348 | 1061 | |
1da177e4 LT |
1062 | #endif /* __KERNEL__ */ |
1063 | #endif /* LINUX_PCI_H */ |