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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 | ||
20 | #include <linux/mod_devicetable.h> | |
21 | ||
4352dfd5 GKH |
22 | /* Include the pci register defines */ |
23 | #include <linux/pci_regs.h> | |
1da177e4 LT |
24 | |
25 | /* Include the ID list */ | |
1da177e4 LT |
26 | #include <linux/pci_ids.h> |
27 | ||
28 | /* | |
29 | * The PCI interface treats multi-function devices as independent | |
30 | * devices. The slot/function address of each device is encoded | |
31 | * in a single byte as follows: | |
32 | * | |
33 | * 7:3 = slot | |
34 | * 2:0 = function | |
35 | */ | |
36 | #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) | |
37 | #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) | |
38 | #define PCI_FUNC(devfn) ((devfn) & 0x07) | |
39 | ||
40 | /* Ioctls for /proc/bus/pci/X/Y nodes. */ | |
41 | #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) | |
42 | #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ | |
43 | #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ | |
44 | #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ | |
45 | #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ | |
46 | ||
47 | #ifdef __KERNEL__ | |
48 | ||
49 | #include <linux/types.h> | |
50 | #include <linux/config.h> | |
51 | #include <linux/ioport.h> | |
52 | #include <linux/list.h> | |
53 | #include <linux/errno.h> | |
54 | #include <linux/device.h> | |
55 | ||
56 | /* File state for mmap()s on /proc/bus/pci/X/Y */ | |
57 | enum pci_mmap_state { | |
58 | pci_mmap_io, | |
59 | pci_mmap_mem | |
60 | }; | |
61 | ||
62 | /* This defines the direction arg to the DMA mapping routines. */ | |
63 | #define PCI_DMA_BIDIRECTIONAL 0 | |
64 | #define PCI_DMA_TODEVICE 1 | |
65 | #define PCI_DMA_FROMDEVICE 2 | |
66 | #define PCI_DMA_NONE 3 | |
67 | ||
68 | #define DEVICE_COUNT_COMPATIBLE 4 | |
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 LT |
80 | |
81 | /* | |
82 | * The pci_dev structure is used to describe PCI devices. | |
83 | */ | |
84 | struct pci_dev { | |
85 | struct list_head global_list; /* node in list of all PCI devices */ | |
86 | struct list_head bus_list; /* node in per-bus list */ | |
87 | struct pci_bus *bus; /* bus this device is on */ | |
88 | struct pci_bus *subordinate; /* bus this device bridges to */ | |
89 | ||
90 | void *sysdata; /* hook for sys-specific extension */ | |
91 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ | |
92 | ||
93 | unsigned int devfn; /* encoded device & function index */ | |
94 | unsigned short vendor; | |
95 | unsigned short device; | |
96 | unsigned short subsystem_vendor; | |
97 | unsigned short subsystem_device; | |
98 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ | |
99 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ | |
100 | u8 rom_base_reg; /* which config register controls the ROM */ | |
101 | ||
102 | struct pci_driver *driver; /* which driver has allocated this device */ | |
103 | u64 dma_mask; /* Mask of the bits of bus address this | |
104 | device implements. Normally this is | |
105 | 0xffffffff. You only need to change | |
106 | this if your device has broken DMA | |
107 | or supports 64-bit transfers. */ | |
108 | ||
109 | pci_power_t current_state; /* Current operating state. In ACPI-speak, | |
110 | this is D0-D3, D0 being fully functional, | |
111 | and D3 being off. */ | |
112 | ||
113 | struct device dev; /* Generic device interface */ | |
114 | ||
115 | /* device is compatible with these IDs */ | |
116 | unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE]; | |
117 | unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE]; | |
118 | ||
119 | int cfg_size; /* Size of configuration space */ | |
120 | ||
121 | /* | |
122 | * Instead of touching interrupt line and base address registers | |
123 | * directly, use the values stored here. They might be different! | |
124 | */ | |
125 | unsigned int irq; | |
126 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ | |
127 | ||
128 | /* These fields are used by common fixups */ | |
129 | unsigned int transparent:1; /* Transparent PCI bridge */ | |
130 | unsigned int multifunction:1;/* Part of multi-function device */ | |
131 | /* keep track of device state */ | |
132 | unsigned int is_enabled:1; /* pci_enable_device has been called */ | |
133 | unsigned int is_busmaster:1; /* device is busmaster */ | |
4602b88d KA |
134 | unsigned int no_msi:1; /* device may not use msi */ |
135 | ||
1da177e4 LT |
136 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
137 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ | |
138 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ | |
139 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ | |
1da177e4 LT |
140 | }; |
141 | ||
142 | #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) | |
143 | #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) | |
144 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) | |
145 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) | |
146 | ||
147 | /* | |
148 | * For PCI devices, the region numbers are assigned this way: | |
149 | * | |
150 | * 0-5 standard PCI regions | |
151 | * 6 expansion ROM | |
152 | * 7-10 bridges: address space assigned to buses behind the bridge | |
153 | */ | |
154 | ||
4352dfd5 GKH |
155 | #define PCI_ROM_RESOURCE 6 |
156 | #define PCI_BRIDGE_RESOURCES 7 | |
157 | #define PCI_NUM_RESOURCES 11 | |
1da177e4 LT |
158 | |
159 | #ifndef PCI_BUS_NUM_RESOURCES | |
4352dfd5 | 160 | #define PCI_BUS_NUM_RESOURCES 8 |
1da177e4 | 161 | #endif |
4352dfd5 GKH |
162 | |
163 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ | |
1da177e4 LT |
164 | |
165 | struct pci_bus { | |
166 | struct list_head node; /* node in list of buses */ | |
167 | struct pci_bus *parent; /* parent bus this bridge is on */ | |
168 | struct list_head children; /* list of child buses */ | |
169 | struct list_head devices; /* list of devices on this bus */ | |
170 | struct pci_dev *self; /* bridge device as seen by parent */ | |
171 | struct resource *resource[PCI_BUS_NUM_RESOURCES]; | |
172 | /* address space routed to this bus */ | |
173 | ||
174 | struct pci_ops *ops; /* configuration access functions */ | |
175 | void *sysdata; /* hook for sys-specific extension */ | |
176 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ | |
177 | ||
178 | unsigned char number; /* bus number */ | |
179 | unsigned char primary; /* number of primary bridge */ | |
180 | unsigned char secondary; /* number of secondary bridge */ | |
181 | unsigned char subordinate; /* max number of subordinate buses */ | |
182 | ||
183 | char name[48]; | |
184 | ||
185 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ | |
186 | unsigned short pad2; | |
187 | struct device *bridge; | |
188 | struct class_device class_dev; | |
189 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ | |
190 | struct bin_attribute *legacy_mem; /* legacy mem */ | |
191 | }; | |
192 | ||
193 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) | |
194 | #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev) | |
195 | ||
196 | /* | |
197 | * Error values that may be returned by PCI functions. | |
198 | */ | |
199 | #define PCIBIOS_SUCCESSFUL 0x00 | |
200 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 | |
201 | #define PCIBIOS_BAD_VENDOR_ID 0x83 | |
202 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 | |
203 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 | |
204 | #define PCIBIOS_SET_FAILED 0x88 | |
205 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 | |
206 | ||
207 | /* Low-level architecture-dependent routines */ | |
208 | ||
209 | struct pci_ops { | |
210 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); | |
211 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); | |
212 | }; | |
213 | ||
214 | struct pci_raw_ops { | |
215 | int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn, | |
216 | int reg, int len, u32 *val); | |
217 | int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn, | |
218 | int reg, int len, u32 val); | |
219 | }; | |
220 | ||
221 | extern struct pci_raw_ops *raw_pci_ops; | |
222 | ||
223 | struct pci_bus_region { | |
224 | unsigned long start; | |
225 | unsigned long end; | |
226 | }; | |
227 | ||
228 | struct pci_dynids { | |
229 | spinlock_t lock; /* protects list, index */ | |
230 | struct list_head list; /* for IDs added at runtime */ | |
231 | unsigned int use_driver_data:1; /* pci_driver->driver_data is used */ | |
232 | }; | |
233 | ||
234 | struct module; | |
235 | struct pci_driver { | |
236 | struct list_head node; | |
237 | char *name; | |
238 | struct module *owner; | |
239 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ | |
240 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ | |
241 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ | |
242 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ | |
243 | int (*resume) (struct pci_dev *dev); /* Device woken up */ | |
438510f6 | 244 | int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */ |
c8958177 | 245 | void (*shutdown) (struct pci_dev *dev); |
1da177e4 LT |
246 | |
247 | struct device_driver driver; | |
248 | struct pci_dynids dynids; | |
249 | }; | |
250 | ||
251 | #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver) | |
252 | ||
253 | /** | |
254 | * PCI_DEVICE - macro used to describe a specific pci device | |
255 | * @vend: the 16 bit PCI Vendor ID | |
256 | * @dev: the 16 bit PCI Device ID | |
257 | * | |
258 | * This macro is used to create a struct pci_device_id that matches a | |
259 | * specific device. The subvendor and subdevice fields will be set to | |
260 | * PCI_ANY_ID. | |
261 | */ | |
262 | #define PCI_DEVICE(vend,dev) \ | |
263 | .vendor = (vend), .device = (dev), \ | |
264 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
265 | ||
266 | /** | |
267 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class | |
268 | * @dev_class: the class, subclass, prog-if triple for this device | |
269 | * @dev_class_mask: the class mask for this device | |
270 | * | |
271 | * This macro is used to create a struct pci_device_id that matches a | |
4352dfd5 | 272 | * specific PCI class. The vendor, device, subvendor, and subdevice |
1da177e4 LT |
273 | * fields will be set to PCI_ANY_ID. |
274 | */ | |
275 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ | |
276 | .class = (dev_class), .class_mask = (dev_class_mask), \ | |
277 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ | |
278 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID | |
279 | ||
4352dfd5 | 280 | /* |
1da177e4 LT |
281 | * pci_module_init is obsolete, this stays here till we fix up all usages of it |
282 | * in the tree. | |
283 | */ | |
284 | #define pci_module_init pci_register_driver | |
285 | ||
286 | /* these external functions are only available when PCI support is enabled */ | |
287 | #ifdef CONFIG_PCI | |
288 | ||
289 | extern struct bus_type pci_bus_type; | |
290 | ||
291 | /* Do NOT directly access these two variables, unless you are arch specific pci | |
292 | * code, or pci core code. */ | |
293 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ | |
294 | extern struct list_head pci_devices; /* list of all devices */ | |
295 | ||
296 | void pcibios_fixup_bus(struct pci_bus *); | |
297 | int pcibios_enable_device(struct pci_dev *, int mask); | |
298 | char *pcibios_setup (char *str); | |
299 | ||
300 | /* Used only when drivers/pci/setup.c is used */ | |
301 | void pcibios_align_resource(void *, struct resource *, | |
302 | unsigned long, unsigned long); | |
303 | void pcibios_update_irq(struct pci_dev *, int irq); | |
304 | ||
305 | /* Generic PCI functions used internally */ | |
306 | ||
307 | extern struct pci_bus *pci_find_bus(int domain, int busnr); | |
c431ada4 | 308 | void pci_bus_add_devices(struct pci_bus *bus); |
1da177e4 LT |
309 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
310 | static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata) | |
311 | { | |
c431ada4 RS |
312 | struct pci_bus *root_bus; |
313 | root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); | |
314 | if (root_bus) | |
315 | pci_bus_add_devices(root_bus); | |
316 | return root_bus; | |
1da177e4 | 317 | } |
cdb9b9f7 PM |
318 | struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
319 | struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); | |
1da177e4 LT |
320 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
321 | struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn); | |
cdb9b9f7 | 322 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
1da177e4 LT |
323 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
324 | void pci_bus_add_device(struct pci_dev *dev); | |
1da177e4 LT |
325 | void pci_read_bridge_bases(struct pci_bus *child); |
326 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res); | |
327 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); | |
328 | extern struct pci_dev *pci_dev_get(struct pci_dev *dev); | |
329 | extern void pci_dev_put(struct pci_dev *dev); | |
330 | extern void pci_remove_bus(struct pci_bus *b); | |
331 | extern void pci_remove_bus_device(struct pci_dev *dev); | |
b3743fa4 | 332 | void pci_setup_cardbus(struct pci_bus *bus); |
1da177e4 LT |
333 | |
334 | /* Generic PCI functions exported to card drivers */ | |
335 | ||
336 | struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from); | |
337 | struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from); | |
338 | struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); | |
339 | int pci_find_capability (struct pci_dev *dev, int cap); | |
340 | int pci_find_ext_capability (struct pci_dev *dev, int cap); | |
341 | struct pci_bus * pci_find_next_bus(const struct pci_bus *from); | |
342 | ||
343 | struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from); | |
344 | struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, | |
345 | unsigned int ss_vendor, unsigned int ss_device, | |
346 | struct pci_dev *from); | |
347 | struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn); | |
348 | struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from); | |
349 | int pci_dev_present(const struct pci_device_id *ids); | |
350 | ||
351 | int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val); | |
352 | int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val); | |
353 | int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val); | |
354 | int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val); | |
355 | int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val); | |
356 | int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val); | |
357 | ||
358 | static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) | |
359 | { | |
360 | return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val); | |
361 | } | |
362 | static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) | |
363 | { | |
364 | return pci_bus_read_config_word (dev->bus, dev->devfn, where, val); | |
365 | } | |
366 | static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val) | |
367 | { | |
368 | return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val); | |
369 | } | |
370 | static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) | |
371 | { | |
372 | return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val); | |
373 | } | |
374 | static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) | |
375 | { | |
376 | return pci_bus_write_config_word (dev->bus, dev->devfn, where, val); | |
377 | } | |
378 | static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val) | |
379 | { | |
380 | return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val); | |
381 | } | |
382 | ||
9c8550ee LT |
383 | int pci_enable_device(struct pci_dev *dev); |
384 | int pci_enable_device_bars(struct pci_dev *dev, int mask); | |
1da177e4 LT |
385 | void pci_disable_device(struct pci_dev *dev); |
386 | void pci_set_master(struct pci_dev *dev); | |
387 | #define HAVE_PCI_SET_MWI | |
9c8550ee | 388 | int pci_set_mwi(struct pci_dev *dev); |
1da177e4 | 389 | void pci_clear_mwi(struct pci_dev *dev); |
a04ce0ff | 390 | void pci_intx(struct pci_dev *dev, int enable); |
9c8550ee LT |
391 | int pci_set_dma_mask(struct pci_dev *dev, u64 mask); |
392 | int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); | |
064b53db | 393 | void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); |
1da177e4 | 394 | int pci_assign_resource(struct pci_dev *dev, int i); |
064b53db | 395 | void pci_restore_bars(struct pci_dev *dev); |
1da177e4 LT |
396 | |
397 | /* ROM control related routines */ | |
144a50ea DJ |
398 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
399 | void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size); | |
1da177e4 LT |
400 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
401 | void pci_remove_rom(struct pci_dev *pdev); | |
402 | ||
403 | /* Power management related routines */ | |
404 | int pci_save_state(struct pci_dev *dev); | |
405 | int pci_restore_state(struct pci_dev *dev); | |
9c8550ee LT |
406 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
407 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); | |
408 | int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); | |
1da177e4 LT |
409 | |
410 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ | |
411 | void pci_bus_assign_resources(struct pci_bus *bus); | |
412 | void pci_bus_size_bridges(struct pci_bus *bus); | |
413 | int pci_claim_resource(struct pci_dev *, int); | |
414 | void pci_assign_unassigned_resources(void); | |
415 | void pdev_enable_device(struct pci_dev *); | |
416 | void pdev_sort_resources(struct pci_dev *, struct resource_list *); | |
417 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), | |
418 | int (*)(struct pci_dev *, u8, u8)); | |
419 | #define HAVE_PCI_REQ_REGIONS 2 | |
420 | int pci_request_regions(struct pci_dev *, char *); | |
421 | void pci_release_regions(struct pci_dev *); | |
422 | int pci_request_region(struct pci_dev *, int, char *); | |
423 | void pci_release_region(struct pci_dev *, int); | |
424 | ||
425 | /* drivers/pci/bus.c */ | |
426 | int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, | |
427 | unsigned long size, unsigned long align, | |
428 | unsigned long min, unsigned int type_mask, | |
429 | void (*alignf)(void *, struct resource *, | |
430 | unsigned long, unsigned long), | |
431 | void *alignf_data); | |
432 | void pci_enable_bridges(struct pci_bus *bus); | |
433 | ||
434 | /* New-style probing supporting hot-pluggable devices */ | |
435 | int pci_register_driver(struct pci_driver *); | |
436 | void pci_unregister_driver(struct pci_driver *); | |
437 | void pci_remove_behind_bridge(struct pci_dev *); | |
438 | struct pci_driver *pci_dev_driver(const struct pci_dev *); | |
75865858 GKH |
439 | const struct pci_device_id *pci_match_device(struct pci_driver *drv, struct pci_dev *dev); |
440 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev); | |
1da177e4 LT |
441 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass); |
442 | ||
cecf4864 PM |
443 | void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), |
444 | void *userdata); | |
445 | ||
1da177e4 LT |
446 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
447 | ||
448 | #include <linux/dmapool.h> | |
449 | ||
450 | #define pci_pool dma_pool | |
451 | #define pci_pool_create(name, pdev, size, align, allocation) \ | |
452 | dma_pool_create(name, &pdev->dev, size, align, allocation) | |
453 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) | |
454 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) | |
455 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) | |
456 | ||
e24c2d96 DM |
457 | enum pci_dma_burst_strategy { |
458 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, | |
459 | strategy_parameter is N/A */ | |
460 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter | |
461 | byte boundaries */ | |
462 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of | |
463 | strategy_parameter byte boundaries */ | |
464 | }; | |
465 | ||
1da177e4 LT |
466 | #if defined(CONFIG_ISA) || defined(CONFIG_EISA) |
467 | extern struct pci_dev *isa_bridge; | |
468 | #endif | |
469 | ||
470 | struct msix_entry { | |
471 | u16 vector; /* kernel uses to write allocated vector */ | |
472 | u16 entry; /* driver uses to specify entry, OS writes */ | |
473 | }; | |
474 | ||
475 | #ifndef CONFIG_PCI_MSI | |
476 | static inline void pci_scan_msi_device(struct pci_dev *dev) {} | |
477 | static inline int pci_enable_msi(struct pci_dev *dev) {return -1;} | |
478 | static inline void pci_disable_msi(struct pci_dev *dev) {} | |
479 | static inline int pci_enable_msix(struct pci_dev* dev, | |
480 | struct msix_entry *entries, int nvec) {return -1;} | |
481 | static inline void pci_disable_msix(struct pci_dev *dev) {} | |
482 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {} | |
483 | #else | |
484 | extern void pci_scan_msi_device(struct pci_dev *dev); | |
485 | extern int pci_enable_msi(struct pci_dev *dev); | |
486 | extern void pci_disable_msi(struct pci_dev *dev); | |
487 | extern int pci_enable_msix(struct pci_dev* dev, | |
488 | struct msix_entry *entries, int nvec); | |
489 | extern void pci_disable_msix(struct pci_dev *dev); | |
490 | extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); | |
491 | #endif | |
492 | ||
4352dfd5 GKH |
493 | /* |
494 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), | |
495 | * a PCI domain is defined to be a set of PCI busses which share | |
496 | * configuration space. | |
497 | */ | |
498 | #ifndef CONFIG_PCI_DOMAINS | |
499 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } | |
500 | static inline int pci_proc_domain(struct pci_bus *bus) | |
501 | { | |
502 | return 0; | |
503 | } | |
504 | #endif | |
1da177e4 | 505 | |
4352dfd5 | 506 | #else /* CONFIG_PCI is not enabled */ |
1da177e4 LT |
507 | |
508 | /* | |
509 | * If the system does not have PCI, clearly these return errors. Define | |
510 | * these as simple inline functions to avoid hair in drivers. | |
511 | */ | |
512 | ||
1da177e4 LT |
513 | #define _PCI_NOP(o,s,t) \ |
514 | static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \ | |
515 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } | |
516 | #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \ | |
517 | _PCI_NOP(o,word,u16 x) \ | |
518 | _PCI_NOP(o,dword,u32 x) | |
519 | _PCI_NOP_ALL(read, *) | |
520 | _PCI_NOP_ALL(write,) | |
521 | ||
522 | static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from) | |
523 | { return NULL; } | |
524 | ||
525 | static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn) | |
526 | { return NULL; } | |
527 | ||
528 | static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from) | |
529 | { return NULL; } | |
530 | ||
531 | static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, | |
532 | unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from) | |
533 | { return NULL; } | |
534 | ||
535 | static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from) | |
536 | { return NULL; } | |
537 | ||
538 | #define pci_dev_present(ids) (0) | |
539 | #define pci_dev_put(dev) do { } while (0) | |
540 | ||
541 | static inline void pci_set_master(struct pci_dev *dev) { } | |
542 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } | |
543 | static inline void pci_disable_device(struct pci_dev *dev) { } | |
544 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } | |
1da177e4 LT |
545 | static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;} |
546 | static inline int pci_register_driver(struct pci_driver *drv) { return 0;} | |
547 | static inline void pci_unregister_driver(struct pci_driver *drv) { } | |
548 | static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; } | |
549 | static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; } | |
550 | static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; } | |
551 | ||
552 | /* Power management related routines */ | |
553 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } | |
554 | static inline int pci_restore_state(struct pci_dev *dev) { return 0; } | |
555 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; } | |
438510f6 | 556 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; } |
1da177e4 LT |
557 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; } |
558 | ||
559 | #define isa_bridge ((struct pci_dev *)NULL) | |
560 | ||
a46e8126 KG |
561 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
562 | ||
4352dfd5 | 563 | #endif /* CONFIG_PCI */ |
1da177e4 | 564 | |
4352dfd5 GKH |
565 | /* Include architecture-dependent settings and functions */ |
566 | ||
567 | #include <asm/pci.h> | |
1da177e4 LT |
568 | |
569 | /* these helpers provide future and backwards compatibility | |
570 | * for accessing popular PCI BAR info */ | |
571 | #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start) | |
572 | #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end) | |
573 | #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags) | |
574 | #define pci_resource_len(dev,bar) \ | |
575 | ((pci_resource_start((dev),(bar)) == 0 && \ | |
576 | pci_resource_end((dev),(bar)) == \ | |
577 | pci_resource_start((dev),(bar))) ? 0 : \ | |
578 | \ | |
579 | (pci_resource_end((dev),(bar)) - \ | |
580 | pci_resource_start((dev),(bar)) + 1)) | |
581 | ||
582 | /* Similar to the helpers above, these manipulate per-pci_dev | |
583 | * driver-specific data. They are really just a wrapper around | |
584 | * the generic device structure functions of these calls. | |
585 | */ | |
586 | static inline void *pci_get_drvdata (struct pci_dev *pdev) | |
587 | { | |
588 | return dev_get_drvdata(&pdev->dev); | |
589 | } | |
590 | ||
591 | static inline void pci_set_drvdata (struct pci_dev *pdev, void *data) | |
592 | { | |
593 | dev_set_drvdata(&pdev->dev, data); | |
594 | } | |
595 | ||
596 | /* If you want to know what to call your pci_dev, ask this function. | |
597 | * Again, it's a wrapper around the generic device. | |
598 | */ | |
599 | static inline char *pci_name(struct pci_dev *pdev) | |
600 | { | |
601 | return pdev->dev.bus_id; | |
602 | } | |
603 | ||
2311b1f2 ME |
604 | |
605 | /* Some archs don't want to expose struct resource to userland as-is | |
606 | * in sysfs and /proc | |
607 | */ | |
608 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER | |
609 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, | |
610 | const struct resource *rsrc, u64 *start, u64 *end) | |
611 | { | |
612 | *start = rsrc->start; | |
613 | *end = rsrc->end; | |
614 | } | |
615 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ | |
616 | ||
617 | ||
1da177e4 LT |
618 | /* |
619 | * The world is not perfect and supplies us with broken PCI devices. | |
620 | * For at least a part of these bugs we need a work-around, so both | |
621 | * generic (drivers/pci/quirks.c) and per-architecture code can define | |
622 | * fixup hooks to be called for particular buggy devices. | |
623 | */ | |
624 | ||
625 | struct pci_fixup { | |
626 | u16 vendor, device; /* You can use PCI_ANY_ID here of course */ | |
627 | void (*hook)(struct pci_dev *dev); | |
628 | }; | |
629 | ||
630 | enum pci_fixup_pass { | |
631 | pci_fixup_early, /* Before probing BARs */ | |
632 | pci_fixup_header, /* After reading configuration header */ | |
633 | pci_fixup_final, /* Final phase of device fixups */ | |
634 | pci_fixup_enable, /* pci_enable_device() time */ | |
635 | }; | |
636 | ||
637 | /* Anonymous variables would be nice... */ | |
638 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ | |
74d863ee | 639 | static const struct pci_fixup __pci_fixup_##name __attribute_used__ \ |
1da177e4 LT |
640 | __attribute__((__section__(#section))) = { vendor, device, hook }; |
641 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ | |
642 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ | |
643 | vendor##device##hook, vendor, device, hook) | |
644 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ | |
645 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ | |
646 | vendor##device##hook, vendor, device, hook) | |
647 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ | |
648 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ | |
649 | vendor##device##hook, vendor, device, hook) | |
650 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ | |
651 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ | |
652 | vendor##device##hook, vendor, device, hook) | |
653 | ||
654 | ||
655 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); | |
656 | ||
657 | extern int pci_pci_problems; | |
658 | #define PCIPCI_FAIL 1 | |
659 | #define PCIPCI_TRITON 2 | |
660 | #define PCIPCI_NATOMA 4 | |
661 | #define PCIPCI_VIAETBF 8 | |
662 | #define PCIPCI_VSFX 16 | |
663 | #define PCIPCI_ALIMAGIK 32 | |
664 | ||
665 | #endif /* __KERNEL__ */ | |
666 | #endif /* LINUX_PCI_H */ |