ia64/linux-2.6.18-xen.hg

view include/linux/pci.h @ 769:2fdc121e9b5d

Add "guestdev=" boot parameter.

This patch adds "guestdev=" boot parameter. This boot parameter is
used to reassign page-aligned memory resource and bind PCI back driver.

Signed-off-by: Yuji Shimada <shimada-yxb@necst.nec.co.jp>
author Keir Fraser <keir.fraser@citrix.com>
date Mon Jan 05 10:53:44 2009 +0000 (2009-01-05)
parents 5888ffa4b252
children 77e3b255381e
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 #ifdef CONFIG_XEN
156 unsigned int irq_old;
157 #endif
158 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
160 /* These fields are used by common fixups */
161 unsigned int transparent:1; /* Transparent PCI bridge */
162 unsigned int multifunction:1;/* Part of multi-function device */
163 /* keep track of device state */
164 unsigned int is_enabled:1; /* pci_enable_device has been called */
165 unsigned int is_busmaster:1; /* device is busmaster */
166 unsigned int no_msi:1; /* device may not use msi */
167 unsigned int no_d1d2:1; /* only allow d0 or d3 */
168 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
169 unsigned int broken_parity_status:1; /* Device generates false positive parity */
170 unsigned int msi_enabled:1;
171 unsigned int msix_enabled:1;
173 u32 saved_config_space[16]; /* config space saved at suspend time */
174 struct hlist_head saved_cap_space;
175 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
176 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
177 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
178 };
180 #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list)
181 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
182 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
183 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
185 static inline struct pci_cap_saved_state *pci_find_saved_cap(
186 struct pci_dev *pci_dev,char cap)
187 {
188 struct pci_cap_saved_state *tmp;
189 struct hlist_node *pos;
191 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
192 if (tmp->cap_nr == cap)
193 return tmp;
194 }
195 return NULL;
196 }
198 static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
199 struct pci_cap_saved_state *new_cap)
200 {
201 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
202 }
204 static inline void pci_remove_saved_cap(struct pci_cap_saved_state *cap)
205 {
206 hlist_del(&cap->next);
207 }
209 /*
210 * For PCI devices, the region numbers are assigned this way:
211 *
212 * 0-5 standard PCI regions
213 * 6 expansion ROM
214 * 7-10 bridges: address space assigned to buses behind the bridge
215 */
217 #define PCI_ROM_RESOURCE 6
218 #define PCI_BRIDGE_RESOURCES 7
219 #define PCI_NUM_RESOURCES 11
221 #ifndef PCI_BUS_NUM_RESOURCES
222 #define PCI_BUS_NUM_RESOURCES 8
223 #endif
225 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
227 struct pci_bus {
228 struct list_head node; /* node in list of buses */
229 struct pci_bus *parent; /* parent bus this bridge is on */
230 struct list_head children; /* list of child buses */
231 struct list_head devices; /* list of devices on this bus */
232 struct pci_dev *self; /* bridge device as seen by parent */
233 struct resource *resource[PCI_BUS_NUM_RESOURCES];
234 /* address space routed to this bus */
236 struct pci_ops *ops; /* configuration access functions */
237 void *sysdata; /* hook for sys-specific extension */
238 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
240 unsigned char number; /* bus number */
241 unsigned char primary; /* number of primary bridge */
242 unsigned char secondary; /* number of secondary bridge */
243 unsigned char subordinate; /* max number of subordinate buses */
245 char name[48];
247 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
248 pci_bus_flags_t bus_flags; /* Inherited by child busses */
249 struct device *bridge;
250 struct class_device class_dev;
251 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
252 struct bin_attribute *legacy_mem; /* legacy mem */
253 };
255 #define pci_bus_b(n) list_entry(n, struct pci_bus, node)
256 #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev)
258 /*
259 * Error values that may be returned by PCI functions.
260 */
261 #define PCIBIOS_SUCCESSFUL 0x00
262 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
263 #define PCIBIOS_BAD_VENDOR_ID 0x83
264 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
265 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
266 #define PCIBIOS_SET_FAILED 0x88
267 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
269 /* Low-level architecture-dependent routines */
271 struct pci_ops {
272 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
273 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
274 };
276 struct pci_raw_ops {
277 int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
278 int reg, int len, u32 *val);
279 int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
280 int reg, int len, u32 val);
281 };
283 extern struct pci_raw_ops *raw_pci_ops;
285 struct pci_bus_region {
286 unsigned long start;
287 unsigned long end;
288 };
290 struct pci_dynids {
291 spinlock_t lock; /* protects list, index */
292 struct list_head list; /* for IDs added at runtime */
293 unsigned int use_driver_data:1; /* pci_driver->driver_data is used */
294 };
296 /* ---------------------------------------------------------------- */
297 /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
298 * a set fof callbacks in struct pci_error_handlers, then that device driver
299 * will be notified of PCI bus errors, and will be driven to recovery
300 * when an error occurs.
301 */
303 typedef unsigned int __bitwise pci_ers_result_t;
305 enum pci_ers_result {
306 /* no result/none/not supported in device driver */
307 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
309 /* Device driver can recover without slot reset */
310 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
312 /* Device driver wants slot to be reset. */
313 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
315 /* Device has completely failed, is unrecoverable */
316 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
318 /* Device driver is fully recovered and operational */
319 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
320 };
322 /* PCI bus error event callbacks */
323 struct pci_error_handlers
324 {
325 /* PCI bus error detected on this device */
326 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
327 enum pci_channel_state error);
329 /* MMIO has been re-enabled, but not DMA */
330 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
332 /* PCI Express link has been reset */
333 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
335 /* PCI slot has been reset */
336 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
338 /* Device driver may resume normal operations */
339 void (*resume)(struct pci_dev *dev);
340 };
342 /* ---------------------------------------------------------------- */
344 struct module;
345 struct pci_driver {
346 struct list_head node;
347 char *name;
348 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
349 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
350 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
351 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
352 int (*resume) (struct pci_dev *dev); /* Device woken up */
353 int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */
354 void (*shutdown) (struct pci_dev *dev);
356 struct pci_error_handlers *err_handler;
357 struct device_driver driver;
358 struct pci_dynids dynids;
359 };
361 #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver)
363 /**
364 * PCI_DEVICE - macro used to describe a specific pci device
365 * @vend: the 16 bit PCI Vendor ID
366 * @dev: the 16 bit PCI Device ID
367 *
368 * This macro is used to create a struct pci_device_id that matches a
369 * specific device. The subvendor and subdevice fields will be set to
370 * PCI_ANY_ID.
371 */
372 #define PCI_DEVICE(vend,dev) \
373 .vendor = (vend), .device = (dev), \
374 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
376 /**
377 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
378 * @dev_class: the class, subclass, prog-if triple for this device
379 * @dev_class_mask: the class mask for this device
380 *
381 * This macro is used to create a struct pci_device_id that matches a
382 * specific PCI class. The vendor, device, subvendor, and subdevice
383 * fields will be set to PCI_ANY_ID.
384 */
385 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
386 .class = (dev_class), .class_mask = (dev_class_mask), \
387 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
388 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
390 /*
391 * pci_module_init is obsolete, this stays here till we fix up all usages of it
392 * in the tree.
393 */
394 #define pci_module_init pci_register_driver
396 /* these external functions are only available when PCI support is enabled */
397 #ifdef CONFIG_PCI
399 extern struct bus_type pci_bus_type;
401 /* Do NOT directly access these two variables, unless you are arch specific pci
402 * code, or pci core code. */
403 extern struct list_head pci_root_buses; /* list of all known PCI buses */
404 extern struct list_head pci_devices; /* list of all devices */
406 void pcibios_fixup_bus(struct pci_bus *);
407 int pcibios_enable_device(struct pci_dev *, int mask);
408 char *pcibios_setup (char *str);
410 /* Used only when drivers/pci/setup.c is used */
411 void pcibios_align_resource(void *, struct resource *, resource_size_t,
412 resource_size_t);
413 void pcibios_update_irq(struct pci_dev *, int irq);
415 /* Generic PCI functions used internally */
417 extern struct pci_bus *pci_find_bus(int domain, int busnr);
418 void pci_bus_add_devices(struct pci_bus *bus);
419 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
420 static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata)
421 {
422 struct pci_bus *root_bus;
423 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
424 if (root_bus)
425 pci_bus_add_devices(root_bus);
426 return root_bus;
427 }
428 struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
429 struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr);
430 int pci_scan_slot(struct pci_bus *bus, int devfn);
431 struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn);
432 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
433 unsigned int pci_scan_child_bus(struct pci_bus *bus);
434 void pci_bus_add_device(struct pci_dev *dev);
435 void pci_read_bridge_bases(struct pci_bus *child);
436 struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res);
437 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
438 extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
439 extern void pci_dev_put(struct pci_dev *dev);
440 extern void pci_remove_bus(struct pci_bus *b);
441 extern void pci_remove_bus_device(struct pci_dev *dev);
442 void pci_setup_cardbus(struct pci_bus *bus);
444 /* Generic PCI functions exported to card drivers */
446 struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from);
447 struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from);
448 struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
449 int pci_find_capability (struct pci_dev *dev, int cap);
450 int pci_find_next_capability (struct pci_dev *dev, u8 pos, int cap);
451 int pci_find_ext_capability (struct pci_dev *dev, int cap);
452 struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
454 struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from);
455 struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
456 unsigned int ss_vendor, unsigned int ss_device,
457 struct pci_dev *from);
458 struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn);
459 struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
460 struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from);
461 int pci_dev_present(const struct pci_device_id *ids);
463 int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val);
464 int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val);
465 int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val);
466 int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val);
467 int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val);
468 int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val);
470 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
471 {
472 return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val);
473 }
474 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
475 {
476 return pci_bus_read_config_word (dev->bus, dev->devfn, where, val);
477 }
478 static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val)
479 {
480 return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val);
481 }
482 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
483 {
484 return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val);
485 }
486 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
487 {
488 return pci_bus_write_config_word (dev->bus, dev->devfn, where, val);
489 }
490 static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val)
491 {
492 return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val);
493 }
495 int pci_enable_device(struct pci_dev *dev);
496 int pci_enable_device_bars(struct pci_dev *dev, int mask);
497 void pci_disable_device(struct pci_dev *dev);
498 void pci_set_master(struct pci_dev *dev);
499 #define HAVE_PCI_SET_MWI
500 int pci_set_mwi(struct pci_dev *dev);
501 void pci_clear_mwi(struct pci_dev *dev);
502 void pci_intx(struct pci_dev *dev, int enable);
503 int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
504 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
505 void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno);
506 int pci_assign_resource(struct pci_dev *dev, int i);
507 int pci_assign_resource_fixed(struct pci_dev *dev, int i);
508 void pci_restore_bars(struct pci_dev *dev);
510 /* ROM control related routines */
511 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
512 void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size);
513 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
514 void pci_remove_rom(struct pci_dev *pdev);
516 /* Power management related routines */
517 int pci_save_state(struct pci_dev *dev);
518 int pci_restore_state(struct pci_dev *dev);
519 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
520 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
521 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
523 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
524 void pci_bus_assign_resources(struct pci_bus *bus);
525 void pci_bus_size_bridges(struct pci_bus *bus);
526 int pci_claim_resource(struct pci_dev *, int);
527 void pci_assign_unassigned_resources(void);
528 void pdev_enable_device(struct pci_dev *);
529 void pdev_sort_resources(struct pci_dev *, struct resource_list *);
530 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
531 int (*)(struct pci_dev *, u8, u8));
532 #define HAVE_PCI_REQ_REGIONS 2
533 int pci_request_regions(struct pci_dev *, const char *);
534 void pci_release_regions(struct pci_dev *);
535 int pci_request_region(struct pci_dev *, int, const char *);
536 void pci_release_region(struct pci_dev *, int);
538 /* drivers/pci/bus.c */
539 int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
540 resource_size_t size, resource_size_t align,
541 resource_size_t min, unsigned int type_mask,
542 void (*alignf)(void *, struct resource *,
543 resource_size_t, resource_size_t),
544 void *alignf_data);
545 void pci_enable_bridges(struct pci_bus *bus);
547 /* Proper probing supporting hot-pluggable devices */
548 int __pci_register_driver(struct pci_driver *, struct module *);
549 static inline int pci_register_driver(struct pci_driver *driver)
550 {
551 return __pci_register_driver(driver, THIS_MODULE);
552 }
554 void pci_unregister_driver(struct pci_driver *);
555 void pci_remove_behind_bridge(struct pci_dev *);
556 struct pci_driver *pci_dev_driver(const struct pci_dev *);
557 const struct pci_device_id *pci_match_device(struct pci_driver *drv, struct pci_dev *dev);
558 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev);
559 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass);
561 void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
562 void *userdata);
563 int pci_cfg_space_size(struct pci_dev *dev);
564 unsigned char pci_bus_max_busnr(struct pci_bus* bus);
566 /* kmem_cache style wrapper around pci_alloc_consistent() */
568 #include <linux/dmapool.h>
570 #define pci_pool dma_pool
571 #define pci_pool_create(name, pdev, size, align, allocation) \
572 dma_pool_create(name, &pdev->dev, size, align, allocation)
573 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
574 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
575 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
577 enum pci_dma_burst_strategy {
578 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
579 strategy_parameter is N/A */
580 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
581 byte boundaries */
582 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
583 strategy_parameter byte boundaries */
584 };
586 #if defined(CONFIG_ISA) || defined(CONFIG_EISA)
587 extern struct pci_dev *isa_bridge;
588 #endif
590 struct msix_entry {
591 u16 vector; /* kernel uses to write allocated vector */
592 u16 entry; /* driver uses to specify entry, OS writes */
593 };
595 #ifndef CONFIG_PCI_MSI
596 static inline void pci_scan_msi_device(struct pci_dev *dev) {}
597 static inline int pci_enable_msi(struct pci_dev *dev) {return -1;}
598 static inline void pci_disable_msi(struct pci_dev *dev) {}
599 static inline int pci_enable_msix(struct pci_dev* dev,
600 struct msix_entry *entries, int nvec) {return -1;}
601 static inline void pci_disable_msix(struct pci_dev *dev) {}
602 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {}
603 #ifdef CONFIG_XEN
604 #define register_msi_get_owner(func) 0
605 #define unregister_msi_get_owner(func) 0
606 #endif
607 #else
608 extern void pci_scan_msi_device(struct pci_dev *dev);
609 extern int pci_enable_msi(struct pci_dev *dev);
610 extern void pci_disable_msi(struct pci_dev *dev);
611 extern int pci_enable_msix(struct pci_dev* dev,
612 struct msix_entry *entries, int nvec);
613 extern void pci_disable_msix(struct pci_dev *dev);
614 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
615 #ifdef CONFIG_XEN
616 extern int register_msi_get_owner(int (*func)(struct pci_dev *dev));
617 extern int unregister_msi_get_owner(int (*func)(struct pci_dev *dev));
618 #endif
619 #endif
621 extern void pci_block_user_cfg_access(struct pci_dev *dev);
622 extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
624 /*
625 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
626 * a PCI domain is defined to be a set of PCI busses which share
627 * configuration space.
628 */
629 #ifndef CONFIG_PCI_DOMAINS
630 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
631 static inline int pci_proc_domain(struct pci_bus *bus)
632 {
633 return 0;
634 }
635 #endif
637 #else /* CONFIG_PCI is not enabled */
639 /*
640 * If the system does not have PCI, clearly these return errors. Define
641 * these as simple inline functions to avoid hair in drivers.
642 */
644 #define _PCI_NOP(o,s,t) \
645 static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \
646 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
647 #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \
648 _PCI_NOP(o,word,u16 x) \
649 _PCI_NOP(o,dword,u32 x)
650 _PCI_NOP_ALL(read, *)
651 _PCI_NOP_ALL(write,)
653 static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
654 { return NULL; }
656 static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
657 { return NULL; }
660 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn)
661 {
662 return NULL;
663 }
664 static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
665 { return NULL; }
667 static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
668 unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
669 { return NULL; }
671 static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
672 { return NULL; }
674 #define pci_dev_present(ids) (0)
675 #define pci_dev_put(dev) do { } while (0)
677 static inline void pci_set_master(struct pci_dev *dev) { }
678 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
679 static inline void pci_disable_device(struct pci_dev *dev) { }
680 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
681 static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
682 static inline int __pci_register_driver(struct pci_driver *drv, struct module *owner) { return 0;}
683 static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
684 static inline void pci_unregister_driver(struct pci_driver *drv) { }
685 static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
686 static inline int pci_find_next_capability (struct pci_dev *dev, u8 post, int cap) { return 0; }
687 static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
688 static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; }
690 /* Power management related routines */
691 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
692 static inline int pci_restore_state(struct pci_dev *dev) { return 0; }
693 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; }
694 static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; }
695 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; }
697 #define isa_bridge ((struct pci_dev *)NULL)
699 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
701 static inline void pci_block_user_cfg_access(struct pci_dev *dev) { }
702 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { }
704 #endif /* CONFIG_PCI */
706 /* Include architecture-dependent settings and functions */
708 #include <asm/pci.h>
710 /* these helpers provide future and backwards compatibility
711 * for accessing popular PCI BAR info */
712 #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start)
713 #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end)
714 #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags)
715 #define pci_resource_len(dev,bar) \
716 ((pci_resource_start((dev),(bar)) == 0 && \
717 pci_resource_end((dev),(bar)) == \
718 pci_resource_start((dev),(bar))) ? 0 : \
719 \
720 (pci_resource_end((dev),(bar)) - \
721 pci_resource_start((dev),(bar)) + 1))
723 /* Similar to the helpers above, these manipulate per-pci_dev
724 * driver-specific data. They are really just a wrapper around
725 * the generic device structure functions of these calls.
726 */
727 static inline void *pci_get_drvdata (struct pci_dev *pdev)
728 {
729 return dev_get_drvdata(&pdev->dev);
730 }
732 static inline void pci_set_drvdata (struct pci_dev *pdev, void *data)
733 {
734 dev_set_drvdata(&pdev->dev, data);
735 }
737 /* If you want to know what to call your pci_dev, ask this function.
738 * Again, it's a wrapper around the generic device.
739 */
740 static inline char *pci_name(struct pci_dev *pdev)
741 {
742 return pdev->dev.bus_id;
743 }
746 /* Some archs don't want to expose struct resource to userland as-is
747 * in sysfs and /proc
748 */
749 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
750 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
751 const struct resource *rsrc, resource_size_t *start,
752 resource_size_t *end)
753 {
754 *start = rsrc->start;
755 *end = rsrc->end;
756 }
757 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
760 /*
761 * The world is not perfect and supplies us with broken PCI devices.
762 * For at least a part of these bugs we need a work-around, so both
763 * generic (drivers/pci/quirks.c) and per-architecture code can define
764 * fixup hooks to be called for particular buggy devices.
765 */
767 struct pci_fixup {
768 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
769 void (*hook)(struct pci_dev *dev);
770 };
772 enum pci_fixup_pass {
773 pci_fixup_early, /* Before probing BARs */
774 pci_fixup_header, /* After reading configuration header */
775 pci_fixup_final, /* Final phase of device fixups */
776 pci_fixup_enable, /* pci_enable_device() time */
777 };
779 /* Anonymous variables would be nice... */
780 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
781 static const struct pci_fixup __pci_fixup_##name __attribute_used__ \
782 __attribute__((__section__(#section))) = { vendor, device, hook };
783 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
784 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
785 vendor##device##hook, vendor, device, hook)
786 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
787 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
788 vendor##device##hook, vendor, device, hook)
789 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
790 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
791 vendor##device##hook, vendor, device, hook)
792 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
793 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
794 vendor##device##hook, vendor, device, hook)
797 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
799 extern int pci_pci_problems;
800 #define PCIPCI_FAIL 1
801 #define PCIPCI_TRITON 2
802 #define PCIPCI_NATOMA 4
803 #define PCIPCI_VIAETBF 8
804 #define PCIPCI_VSFX 16
805 #define PCIPCI_ALIMAGIK 32
807 #ifdef CONFIG_PCI_GUESTDEV
808 int pci_is_guestdev(struct pci_dev *dev);
809 #endif /* CONFIG_PCI_GUESTDEV */
811 #endif /* __KERNEL__ */
812 #endif /* LINUX_PCI_H */