ia64/linux-2.6.18-xen.hg

view include/linux/pci.h @ 790:77e3b255381e

linux: remove xen specific member from pci_dev

Move msi related variable irq_old out of struct pci_dev. This is
logically more consistent and has the additional benefit that xen
kernel and vanilla kernel now have the same pci_dev layout

Signed-off-by: Qing He <qing.he@intel.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Feb 04 12:25:09 2009 +0000 (2009-02-04)
parents 2fdc121e9b5d
children 36d8c23b7574
line source
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 */
17 #ifndef LINUX_PCI_H
18 #define LINUX_PCI_H
20 /* Include the pci register defines */
21 #include <linux/pci_regs.h>
23 /* Include the ID list */
24 #include <linux/pci_ids.h>
26 /*
27 * The PCI interface treats multi-function devices as independent
28 * devices. The slot/function address of each device is encoded
29 * in a single byte as follows:
30 *
31 * 7:3 = slot
32 * 2:0 = function
33 */
34 #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
35 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
36 #define PCI_FUNC(devfn) ((devfn) & 0x07)
38 /* Ioctls for /proc/bus/pci/X/Y nodes. */
39 #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
40 #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */
41 #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */
42 #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */
43 #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */
45 #ifdef __KERNEL__
47 #include <linux/mod_devicetable.h>
49 #include <linux/types.h>
50 #include <linux/ioport.h>
51 #include <linux/list.h>
52 #include <linux/errno.h>
53 #include <linux/device.h>
55 /* File state for mmap()s on /proc/bus/pci/X/Y */
56 enum pci_mmap_state {
57 pci_mmap_io,
58 pci_mmap_mem
59 };
61 /* This defines the direction arg to the DMA mapping routines. */
62 #define PCI_DMA_BIDIRECTIONAL 0
63 #define PCI_DMA_TODEVICE 1
64 #define PCI_DMA_FROMDEVICE 2
65 #define PCI_DMA_NONE 3
67 #define DEVICE_COUNT_COMPATIBLE 4
68 #define DEVICE_COUNT_RESOURCE 12
70 typedef int __bitwise pci_power_t;
72 #define PCI_D0 ((pci_power_t __force) 0)
73 #define PCI_D1 ((pci_power_t __force) 1)
74 #define PCI_D2 ((pci_power_t __force) 2)
75 #define PCI_D3hot ((pci_power_t __force) 3)
76 #define PCI_D3cold ((pci_power_t __force) 4)
77 #define PCI_UNKNOWN ((pci_power_t __force) 5)
78 #define PCI_POWER_ERROR ((pci_power_t __force) -1)
80 /** The pci_channel state describes connectivity between the CPU and
81 * the pci device. If some PCI bus between here and the pci device
82 * has crashed or locked up, this info is reflected here.
83 */
84 typedef unsigned int __bitwise pci_channel_state_t;
86 enum pci_channel_state {
87 /* I/O channel is in normal state */
88 pci_channel_io_normal = (__force pci_channel_state_t) 1,
90 /* I/O to channel is blocked */
91 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
93 /* PCI card is dead */
94 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
95 };
97 typedef unsigned short __bitwise pci_bus_flags_t;
98 enum pci_bus_flags {
99 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
100 };
102 struct pci_cap_saved_state {
103 struct hlist_node next;
104 char cap_nr;
105 u32 data[0];
106 };
108 /*
109 * The pci_dev structure is used to describe PCI devices.
110 */
111 struct pci_dev {
112 struct list_head global_list; /* node in list of all PCI devices */
113 struct list_head bus_list; /* node in per-bus list */
114 struct pci_bus *bus; /* bus this device is on */
115 struct pci_bus *subordinate; /* bus this device bridges to */
117 void *sysdata; /* hook for sys-specific extension */
118 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
120 unsigned int devfn; /* encoded device & function index */
121 unsigned short vendor;
122 unsigned short device;
123 unsigned short subsystem_vendor;
124 unsigned short subsystem_device;
125 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
126 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
127 u8 rom_base_reg; /* which config register controls the ROM */
128 u8 pin; /* which interrupt pin this device uses */
130 struct pci_driver *driver; /* which driver has allocated this device */
131 u64 dma_mask; /* Mask of the bits of bus address this
132 device implements. Normally this is
133 0xffffffff. You only need to change
134 this if your device has broken DMA
135 or supports 64-bit transfers. */
137 pci_power_t current_state; /* Current operating state. In ACPI-speak,
138 this is D0-D3, D0 being fully functional,
139 and D3 being off. */
141 pci_channel_state_t error_state; /* current connectivity state */
142 struct device dev; /* Generic device interface */
144 /* device is compatible with these IDs */
145 unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE];
146 unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE];
148 int cfg_size; /* Size of configuration space */
150 /*
151 * Instead of touching interrupt line and base address registers
152 * directly, use the values stored here. They might be different!
153 */
154 unsigned int irq;
155 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
157 /* These fields are used by common fixups */
158 unsigned int transparent:1; /* Transparent PCI bridge */
159 unsigned int multifunction:1;/* Part of multi-function device */
160 /* keep track of device state */
161 unsigned int is_enabled:1; /* pci_enable_device has been called */
162 unsigned int is_busmaster:1; /* device is busmaster */
163 unsigned int no_msi:1; /* device may not use msi */
164 unsigned int no_d1d2:1; /* only allow d0 or d3 */
165 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
166 unsigned int broken_parity_status:1; /* Device generates false positive parity */
167 unsigned int msi_enabled:1;
168 unsigned int msix_enabled:1;
170 u32 saved_config_space[16]; /* config space saved at suspend time */
171 struct hlist_head saved_cap_space;
172 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
173 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
174 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
175 };
177 #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list)
178 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
179 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
180 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
182 static inline struct pci_cap_saved_state *pci_find_saved_cap(
183 struct pci_dev *pci_dev,char cap)
184 {
185 struct pci_cap_saved_state *tmp;
186 struct hlist_node *pos;
188 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
189 if (tmp->cap_nr == cap)
190 return tmp;
191 }
192 return NULL;
193 }
195 static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
196 struct pci_cap_saved_state *new_cap)
197 {
198 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
199 }
201 static inline void pci_remove_saved_cap(struct pci_cap_saved_state *cap)
202 {
203 hlist_del(&cap->next);
204 }
206 /*
207 * For PCI devices, the region numbers are assigned this way:
208 *
209 * 0-5 standard PCI regions
210 * 6 expansion ROM
211 * 7-10 bridges: address space assigned to buses behind the bridge
212 */
214 #define PCI_ROM_RESOURCE 6
215 #define PCI_BRIDGE_RESOURCES 7
216 #define PCI_NUM_RESOURCES 11
218 #ifndef PCI_BUS_NUM_RESOURCES
219 #define PCI_BUS_NUM_RESOURCES 8
220 #endif
222 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
224 struct pci_bus {
225 struct list_head node; /* node in list of buses */
226 struct pci_bus *parent; /* parent bus this bridge is on */
227 struct list_head children; /* list of child buses */
228 struct list_head devices; /* list of devices on this bus */
229 struct pci_dev *self; /* bridge device as seen by parent */
230 struct resource *resource[PCI_BUS_NUM_RESOURCES];
231 /* address space routed to this bus */
233 struct pci_ops *ops; /* configuration access functions */
234 void *sysdata; /* hook for sys-specific extension */
235 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
237 unsigned char number; /* bus number */
238 unsigned char primary; /* number of primary bridge */
239 unsigned char secondary; /* number of secondary bridge */
240 unsigned char subordinate; /* max number of subordinate buses */
242 char name[48];
244 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
245 pci_bus_flags_t bus_flags; /* Inherited by child busses */
246 struct device *bridge;
247 struct class_device class_dev;
248 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
249 struct bin_attribute *legacy_mem; /* legacy mem */
250 };
252 #define pci_bus_b(n) list_entry(n, struct pci_bus, node)
253 #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev)
255 /*
256 * Error values that may be returned by PCI functions.
257 */
258 #define PCIBIOS_SUCCESSFUL 0x00
259 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
260 #define PCIBIOS_BAD_VENDOR_ID 0x83
261 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
262 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
263 #define PCIBIOS_SET_FAILED 0x88
264 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
266 /* Low-level architecture-dependent routines */
268 struct pci_ops {
269 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
270 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
271 };
273 struct pci_raw_ops {
274 int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
275 int reg, int len, u32 *val);
276 int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
277 int reg, int len, u32 val);
278 };
280 extern struct pci_raw_ops *raw_pci_ops;
282 struct pci_bus_region {
283 unsigned long start;
284 unsigned long end;
285 };
287 struct pci_dynids {
288 spinlock_t lock; /* protects list, index */
289 struct list_head list; /* for IDs added at runtime */
290 unsigned int use_driver_data:1; /* pci_driver->driver_data is used */
291 };
293 /* ---------------------------------------------------------------- */
294 /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
295 * a set fof callbacks in struct pci_error_handlers, then that device driver
296 * will be notified of PCI bus errors, and will be driven to recovery
297 * when an error occurs.
298 */
300 typedef unsigned int __bitwise pci_ers_result_t;
302 enum pci_ers_result {
303 /* no result/none/not supported in device driver */
304 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
306 /* Device driver can recover without slot reset */
307 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
309 /* Device driver wants slot to be reset. */
310 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
312 /* Device has completely failed, is unrecoverable */
313 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
315 /* Device driver is fully recovered and operational */
316 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
317 };
319 /* PCI bus error event callbacks */
320 struct pci_error_handlers
321 {
322 /* PCI bus error detected on this device */
323 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
324 enum pci_channel_state error);
326 /* MMIO has been re-enabled, but not DMA */
327 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
329 /* PCI Express link has been reset */
330 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
332 /* PCI slot has been reset */
333 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
335 /* Device driver may resume normal operations */
336 void (*resume)(struct pci_dev *dev);
337 };
339 /* ---------------------------------------------------------------- */
341 struct module;
342 struct pci_driver {
343 struct list_head node;
344 char *name;
345 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
346 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
347 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
348 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
349 int (*resume) (struct pci_dev *dev); /* Device woken up */
350 int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */
351 void (*shutdown) (struct pci_dev *dev);
353 struct pci_error_handlers *err_handler;
354 struct device_driver driver;
355 struct pci_dynids dynids;
356 };
358 #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver)
360 /**
361 * PCI_DEVICE - macro used to describe a specific pci device
362 * @vend: the 16 bit PCI Vendor ID
363 * @dev: the 16 bit PCI Device ID
364 *
365 * This macro is used to create a struct pci_device_id that matches a
366 * specific device. The subvendor and subdevice fields will be set to
367 * PCI_ANY_ID.
368 */
369 #define PCI_DEVICE(vend,dev) \
370 .vendor = (vend), .device = (dev), \
371 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
373 /**
374 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
375 * @dev_class: the class, subclass, prog-if triple for this device
376 * @dev_class_mask: the class mask for this device
377 *
378 * This macro is used to create a struct pci_device_id that matches a
379 * specific PCI class. The vendor, device, subvendor, and subdevice
380 * fields will be set to PCI_ANY_ID.
381 */
382 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
383 .class = (dev_class), .class_mask = (dev_class_mask), \
384 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
385 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
387 /*
388 * pci_module_init is obsolete, this stays here till we fix up all usages of it
389 * in the tree.
390 */
391 #define pci_module_init pci_register_driver
393 /* these external functions are only available when PCI support is enabled */
394 #ifdef CONFIG_PCI
396 extern struct bus_type pci_bus_type;
398 /* Do NOT directly access these two variables, unless you are arch specific pci
399 * code, or pci core code. */
400 extern struct list_head pci_root_buses; /* list of all known PCI buses */
401 extern struct list_head pci_devices; /* list of all devices */
403 void pcibios_fixup_bus(struct pci_bus *);
404 int pcibios_enable_device(struct pci_dev *, int mask);
405 char *pcibios_setup (char *str);
407 /* Used only when drivers/pci/setup.c is used */
408 void pcibios_align_resource(void *, struct resource *, resource_size_t,
409 resource_size_t);
410 void pcibios_update_irq(struct pci_dev *, int irq);
412 /* Generic PCI functions used internally */
414 extern struct pci_bus *pci_find_bus(int domain, int busnr);
415 void pci_bus_add_devices(struct pci_bus *bus);
416 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
417 static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata)
418 {
419 struct pci_bus *root_bus;
420 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
421 if (root_bus)
422 pci_bus_add_devices(root_bus);
423 return root_bus;
424 }
425 struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
426 struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr);
427 int pci_scan_slot(struct pci_bus *bus, int devfn);
428 struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn);
429 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
430 unsigned int pci_scan_child_bus(struct pci_bus *bus);
431 void pci_bus_add_device(struct pci_dev *dev);
432 void pci_read_bridge_bases(struct pci_bus *child);
433 struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res);
434 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
435 extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
436 extern void pci_dev_put(struct pci_dev *dev);
437 extern void pci_remove_bus(struct pci_bus *b);
438 extern void pci_remove_bus_device(struct pci_dev *dev);
439 void pci_setup_cardbus(struct pci_bus *bus);
441 /* Generic PCI functions exported to card drivers */
443 struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from);
444 struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from);
445 struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
446 int pci_find_capability (struct pci_dev *dev, int cap);
447 int pci_find_next_capability (struct pci_dev *dev, u8 pos, int cap);
448 int pci_find_ext_capability (struct pci_dev *dev, int cap);
449 struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
451 struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from);
452 struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
453 unsigned int ss_vendor, unsigned int ss_device,
454 struct pci_dev *from);
455 struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn);
456 struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
457 struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from);
458 int pci_dev_present(const struct pci_device_id *ids);
460 int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val);
461 int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val);
462 int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val);
463 int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val);
464 int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val);
465 int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val);
467 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
468 {
469 return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val);
470 }
471 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
472 {
473 return pci_bus_read_config_word (dev->bus, dev->devfn, where, val);
474 }
475 static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val)
476 {
477 return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val);
478 }
479 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
480 {
481 return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val);
482 }
483 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
484 {
485 return pci_bus_write_config_word (dev->bus, dev->devfn, where, val);
486 }
487 static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val)
488 {
489 return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val);
490 }
492 int pci_enable_device(struct pci_dev *dev);
493 int pci_enable_device_bars(struct pci_dev *dev, int mask);
494 void pci_disable_device(struct pci_dev *dev);
495 void pci_set_master(struct pci_dev *dev);
496 #define HAVE_PCI_SET_MWI
497 int pci_set_mwi(struct pci_dev *dev);
498 void pci_clear_mwi(struct pci_dev *dev);
499 void pci_intx(struct pci_dev *dev, int enable);
500 int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
501 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
502 void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno);
503 int pci_assign_resource(struct pci_dev *dev, int i);
504 int pci_assign_resource_fixed(struct pci_dev *dev, int i);
505 void pci_restore_bars(struct pci_dev *dev);
507 /* ROM control related routines */
508 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
509 void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size);
510 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
511 void pci_remove_rom(struct pci_dev *pdev);
513 /* Power management related routines */
514 int pci_save_state(struct pci_dev *dev);
515 int pci_restore_state(struct pci_dev *dev);
516 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
517 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
518 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
520 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
521 void pci_bus_assign_resources(struct pci_bus *bus);
522 void pci_bus_size_bridges(struct pci_bus *bus);
523 int pci_claim_resource(struct pci_dev *, int);
524 void pci_assign_unassigned_resources(void);
525 void pdev_enable_device(struct pci_dev *);
526 void pdev_sort_resources(struct pci_dev *, struct resource_list *);
527 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
528 int (*)(struct pci_dev *, u8, u8));
529 #define HAVE_PCI_REQ_REGIONS 2
530 int pci_request_regions(struct pci_dev *, const char *);
531 void pci_release_regions(struct pci_dev *);
532 int pci_request_region(struct pci_dev *, int, const char *);
533 void pci_release_region(struct pci_dev *, int);
535 /* drivers/pci/bus.c */
536 int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
537 resource_size_t size, resource_size_t align,
538 resource_size_t min, unsigned int type_mask,
539 void (*alignf)(void *, struct resource *,
540 resource_size_t, resource_size_t),
541 void *alignf_data);
542 void pci_enable_bridges(struct pci_bus *bus);
544 /* Proper probing supporting hot-pluggable devices */
545 int __pci_register_driver(struct pci_driver *, struct module *);
546 static inline int pci_register_driver(struct pci_driver *driver)
547 {
548 return __pci_register_driver(driver, THIS_MODULE);
549 }
551 void pci_unregister_driver(struct pci_driver *);
552 void pci_remove_behind_bridge(struct pci_dev *);
553 struct pci_driver *pci_dev_driver(const struct pci_dev *);
554 const struct pci_device_id *pci_match_device(struct pci_driver *drv, struct pci_dev *dev);
555 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev);
556 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass);
558 void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
559 void *userdata);
560 int pci_cfg_space_size(struct pci_dev *dev);
561 unsigned char pci_bus_max_busnr(struct pci_bus* bus);
563 /* kmem_cache style wrapper around pci_alloc_consistent() */
565 #include <linux/dmapool.h>
567 #define pci_pool dma_pool
568 #define pci_pool_create(name, pdev, size, align, allocation) \
569 dma_pool_create(name, &pdev->dev, size, align, allocation)
570 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
571 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
572 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
574 enum pci_dma_burst_strategy {
575 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
576 strategy_parameter is N/A */
577 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
578 byte boundaries */
579 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
580 strategy_parameter byte boundaries */
581 };
583 #if defined(CONFIG_ISA) || defined(CONFIG_EISA)
584 extern struct pci_dev *isa_bridge;
585 #endif
587 struct msix_entry {
588 u16 vector; /* kernel uses to write allocated vector */
589 u16 entry; /* driver uses to specify entry, OS writes */
590 };
592 #ifndef CONFIG_PCI_MSI
593 static inline void pci_scan_msi_device(struct pci_dev *dev) {}
594 static inline int pci_enable_msi(struct pci_dev *dev) {return -1;}
595 static inline void pci_disable_msi(struct pci_dev *dev) {}
596 static inline int pci_enable_msix(struct pci_dev* dev,
597 struct msix_entry *entries, int nvec) {return -1;}
598 static inline void pci_disable_msix(struct pci_dev *dev) {}
599 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {}
600 #ifdef CONFIG_XEN
601 #define register_msi_get_owner(func) 0
602 #define unregister_msi_get_owner(func) 0
603 #endif
604 #else
605 extern void pci_scan_msi_device(struct pci_dev *dev);
606 extern int pci_enable_msi(struct pci_dev *dev);
607 extern void pci_disable_msi(struct pci_dev *dev);
608 extern int pci_enable_msix(struct pci_dev* dev,
609 struct msix_entry *entries, int nvec);
610 extern void pci_disable_msix(struct pci_dev *dev);
611 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
612 #ifdef CONFIG_XEN
613 extern int register_msi_get_owner(int (*func)(struct pci_dev *dev));
614 extern int unregister_msi_get_owner(int (*func)(struct pci_dev *dev));
615 #endif
616 #endif
618 extern void pci_block_user_cfg_access(struct pci_dev *dev);
619 extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
621 /*
622 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
623 * a PCI domain is defined to be a set of PCI busses which share
624 * configuration space.
625 */
626 #ifndef CONFIG_PCI_DOMAINS
627 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
628 static inline int pci_proc_domain(struct pci_bus *bus)
629 {
630 return 0;
631 }
632 #endif
634 #else /* CONFIG_PCI is not enabled */
636 /*
637 * If the system does not have PCI, clearly these return errors. Define
638 * these as simple inline functions to avoid hair in drivers.
639 */
641 #define _PCI_NOP(o,s,t) \
642 static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \
643 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
644 #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \
645 _PCI_NOP(o,word,u16 x) \
646 _PCI_NOP(o,dword,u32 x)
647 _PCI_NOP_ALL(read, *)
648 _PCI_NOP_ALL(write,)
650 static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
651 { return NULL; }
653 static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
654 { return NULL; }
657 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn)
658 {
659 return NULL;
660 }
661 static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
662 { return NULL; }
664 static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
665 unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
666 { return NULL; }
668 static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
669 { return NULL; }
671 #define pci_dev_present(ids) (0)
672 #define pci_dev_put(dev) do { } while (0)
674 static inline void pci_set_master(struct pci_dev *dev) { }
675 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
676 static inline void pci_disable_device(struct pci_dev *dev) { }
677 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
678 static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
679 static inline int __pci_register_driver(struct pci_driver *drv, struct module *owner) { return 0;}
680 static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
681 static inline void pci_unregister_driver(struct pci_driver *drv) { }
682 static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
683 static inline int pci_find_next_capability (struct pci_dev *dev, u8 post, int cap) { return 0; }
684 static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
685 static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; }
687 /* Power management related routines */
688 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
689 static inline int pci_restore_state(struct pci_dev *dev) { return 0; }
690 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; }
691 static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; }
692 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; }
694 #define isa_bridge ((struct pci_dev *)NULL)
696 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
698 static inline void pci_block_user_cfg_access(struct pci_dev *dev) { }
699 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { }
701 #endif /* CONFIG_PCI */
703 /* Include architecture-dependent settings and functions */
705 #include <asm/pci.h>
707 /* these helpers provide future and backwards compatibility
708 * for accessing popular PCI BAR info */
709 #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start)
710 #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end)
711 #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags)
712 #define pci_resource_len(dev,bar) \
713 ((pci_resource_start((dev),(bar)) == 0 && \
714 pci_resource_end((dev),(bar)) == \
715 pci_resource_start((dev),(bar))) ? 0 : \
716 \
717 (pci_resource_end((dev),(bar)) - \
718 pci_resource_start((dev),(bar)) + 1))
720 /* Similar to the helpers above, these manipulate per-pci_dev
721 * driver-specific data. They are really just a wrapper around
722 * the generic device structure functions of these calls.
723 */
724 static inline void *pci_get_drvdata (struct pci_dev *pdev)
725 {
726 return dev_get_drvdata(&pdev->dev);
727 }
729 static inline void pci_set_drvdata (struct pci_dev *pdev, void *data)
730 {
731 dev_set_drvdata(&pdev->dev, data);
732 }
734 /* If you want to know what to call your pci_dev, ask this function.
735 * Again, it's a wrapper around the generic device.
736 */
737 static inline char *pci_name(struct pci_dev *pdev)
738 {
739 return pdev->dev.bus_id;
740 }
743 /* Some archs don't want to expose struct resource to userland as-is
744 * in sysfs and /proc
745 */
746 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
747 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
748 const struct resource *rsrc, resource_size_t *start,
749 resource_size_t *end)
750 {
751 *start = rsrc->start;
752 *end = rsrc->end;
753 }
754 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
757 /*
758 * The world is not perfect and supplies us with broken PCI devices.
759 * For at least a part of these bugs we need a work-around, so both
760 * generic (drivers/pci/quirks.c) and per-architecture code can define
761 * fixup hooks to be called for particular buggy devices.
762 */
764 struct pci_fixup {
765 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
766 void (*hook)(struct pci_dev *dev);
767 };
769 enum pci_fixup_pass {
770 pci_fixup_early, /* Before probing BARs */
771 pci_fixup_header, /* After reading configuration header */
772 pci_fixup_final, /* Final phase of device fixups */
773 pci_fixup_enable, /* pci_enable_device() time */
774 };
776 /* Anonymous variables would be nice... */
777 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
778 static const struct pci_fixup __pci_fixup_##name __attribute_used__ \
779 __attribute__((__section__(#section))) = { vendor, device, hook };
780 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
781 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
782 vendor##device##hook, vendor, device, hook)
783 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
784 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
785 vendor##device##hook, vendor, device, hook)
786 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
787 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
788 vendor##device##hook, vendor, device, hook)
789 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
790 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
791 vendor##device##hook, vendor, device, hook)
794 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
796 extern int pci_pci_problems;
797 #define PCIPCI_FAIL 1
798 #define PCIPCI_TRITON 2
799 #define PCIPCI_NATOMA 4
800 #define PCIPCI_VIAETBF 8
801 #define PCIPCI_VSFX 16
802 #define PCIPCI_ALIMAGIK 32
804 #ifdef CONFIG_PCI_GUESTDEV
805 int pci_is_guestdev(struct pci_dev *dev);
806 #endif /* CONFIG_PCI_GUESTDEV */
808 #endif /* __KERNEL__ */
809 #endif /* LINUX_PCI_H */