4 * PCI defines and function prototypes
5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
20 #include <linux/mod_devicetable.h>
22 /* Include the pci register defines */
23 #include <linux/pci_regs.h>
25 /* Include the ID list */
26 #include <linux/pci_ids.h>
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:
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)
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. */
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>
56 /* File state for mmap()s on /proc/bus/pci/X/Y */
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
68 #define DEVICE_COUNT_COMPATIBLE 4
69 #define DEVICE_COUNT_RESOURCE 12
71 typedef int __bitwise pci_power_t;
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)
76 #define PCI_D3hot ((pci_power_t __force) 3)
77 #define PCI_D3cold ((pci_power_t __force) 4)
78 #define PCI_POWER_ERROR ((pci_power_t __force) -1)
81 * The pci_dev structure is used to describe PCI devices.
84 struct list_head global_list; /* node in list of all PCI devices */
85 struct list_head bus_list; /* node in per-bus list */
86 struct pci_bus *bus; /* bus this device is on */
87 struct pci_bus *subordinate; /* bus this device bridges to */
89 void *sysdata; /* hook for sys-specific extension */
90 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
92 unsigned int devfn; /* encoded device & function index */
93 unsigned short vendor;
94 unsigned short device;
95 unsigned short subsystem_vendor;
96 unsigned short subsystem_device;
97 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
98 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
99 u8 rom_base_reg; /* which config register controls the ROM */
101 struct pci_driver *driver; /* which driver has allocated this device */
102 u64 dma_mask; /* Mask of the bits of bus address this
103 device implements. Normally this is
104 0xffffffff. You only need to change
105 this if your device has broken DMA
106 or supports 64-bit transfers. */
108 pci_power_t current_state; /* Current operating state. In ACPI-speak,
109 this is D0-D3, D0 being fully functional,
112 struct device dev; /* Generic device interface */
114 /* device is compatible with these IDs */
115 unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE];
116 unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE];
118 int cfg_size; /* Size of configuration space */
121 * Instead of touching interrupt line and base address registers
122 * directly, use the values stored here. They might be different!
125 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
127 /* These fields are used by common fixups */
128 unsigned int transparent:1; /* Transparent PCI bridge */
129 unsigned int multifunction:1;/* Part of multi-function device */
130 /* keep track of device state */
131 unsigned int is_enabled:1; /* pci_enable_device has been called */
132 unsigned int is_busmaster:1; /* device is busmaster */
133 unsigned int no_msi:1; /* device may not use msi */
135 u32 saved_config_space[16]; /* config space saved at suspend time */
136 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
137 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
138 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
141 #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list)
142 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
143 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
144 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
147 * For PCI devices, the region numbers are assigned this way:
149 * 0-5 standard PCI regions
151 * 7-10 bridges: address space assigned to buses behind the bridge
154 #define PCI_ROM_RESOURCE 6
155 #define PCI_BRIDGE_RESOURCES 7
156 #define PCI_NUM_RESOURCES 11
158 #ifndef PCI_BUS_NUM_RESOURCES
159 #define PCI_BUS_NUM_RESOURCES 8
162 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
165 struct list_head node; /* node in list of buses */
166 struct pci_bus *parent; /* parent bus this bridge is on */
167 struct list_head children; /* list of child buses */
168 struct list_head devices; /* list of devices on this bus */
169 struct pci_dev *self; /* bridge device as seen by parent */
170 struct resource *resource[PCI_BUS_NUM_RESOURCES];
171 /* address space routed to this bus */
173 struct pci_ops *ops; /* configuration access functions */
174 void *sysdata; /* hook for sys-specific extension */
175 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
177 unsigned char number; /* bus number */
178 unsigned char primary; /* number of primary bridge */
179 unsigned char secondary; /* number of secondary bridge */
180 unsigned char subordinate; /* max number of subordinate buses */
184 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
186 struct device *bridge;
187 struct class_device class_dev;
188 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
189 struct bin_attribute *legacy_mem; /* legacy mem */
192 #define pci_bus_b(n) list_entry(n, struct pci_bus, node)
193 #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev)
196 * Error values that may be returned by PCI functions.
198 #define PCIBIOS_SUCCESSFUL 0x00
199 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
200 #define PCIBIOS_BAD_VENDOR_ID 0x83
201 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
202 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
203 #define PCIBIOS_SET_FAILED 0x88
204 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
206 /* Low-level architecture-dependent routines */
209 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
210 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
214 int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn,
215 int reg, int len, u32 *val);
216 int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn,
217 int reg, int len, u32 val);
220 extern struct pci_raw_ops *raw_pci_ops;
222 struct pci_bus_region {
228 spinlock_t lock; /* protects list, index */
229 struct list_head list; /* for IDs added at runtime */
230 unsigned int use_driver_data:1; /* pci_driver->driver_data is used */
235 struct list_head node;
237 struct module *owner;
238 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
239 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
240 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
241 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
242 int (*resume) (struct pci_dev *dev); /* Device woken up */
243 int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */
244 void (*shutdown) (struct pci_dev *dev);
246 struct device_driver driver;
247 struct pci_dynids dynids;
250 #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver)
253 * PCI_DEVICE - macro used to describe a specific pci device
254 * @vend: the 16 bit PCI Vendor ID
255 * @dev: the 16 bit PCI Device ID
257 * This macro is used to create a struct pci_device_id that matches a
258 * specific device. The subvendor and subdevice fields will be set to
261 #define PCI_DEVICE(vend,dev) \
262 .vendor = (vend), .device = (dev), \
263 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
266 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
267 * @dev_class: the class, subclass, prog-if triple for this device
268 * @dev_class_mask: the class mask for this device
270 * This macro is used to create a struct pci_device_id that matches a
271 * specific PCI class. The vendor, device, subvendor, and subdevice
272 * fields will be set to PCI_ANY_ID.
274 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
275 .class = (dev_class), .class_mask = (dev_class_mask), \
276 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
277 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
280 * pci_module_init is obsolete, this stays here till we fix up all usages of it
283 #define pci_module_init pci_register_driver
285 /* these external functions are only available when PCI support is enabled */
288 extern struct bus_type pci_bus_type;
290 /* Do NOT directly access these two variables, unless you are arch specific pci
291 * code, or pci core code. */
292 extern struct list_head pci_root_buses; /* list of all known PCI buses */
293 extern struct list_head pci_devices; /* list of all devices */
295 void pcibios_fixup_bus(struct pci_bus *);
296 int pcibios_enable_device(struct pci_dev *, int mask);
297 char *pcibios_setup (char *str);
299 /* Used only when drivers/pci/setup.c is used */
300 void pcibios_align_resource(void *, struct resource *,
301 unsigned long, unsigned long);
302 void pcibios_update_irq(struct pci_dev *, int irq);
304 /* Generic PCI functions used internally */
306 extern struct pci_bus *pci_find_bus(int domain, int busnr);
307 void pci_bus_add_devices(struct pci_bus *bus);
308 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
309 static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata)
311 struct pci_bus *root_bus;
312 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
314 pci_bus_add_devices(root_bus);
317 int pci_scan_slot(struct pci_bus *bus, int devfn);
318 struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn);
319 unsigned int pci_scan_child_bus(struct pci_bus *bus);
320 void pci_bus_add_device(struct pci_dev *dev);
321 void pci_read_bridge_bases(struct pci_bus *child);
322 struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res);
323 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
324 extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
325 extern void pci_dev_put(struct pci_dev *dev);
326 extern void pci_remove_bus(struct pci_bus *b);
327 extern void pci_remove_bus_device(struct pci_dev *dev);
329 /* Generic PCI functions exported to card drivers */
331 struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from);
332 struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from);
333 struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn);
334 int pci_find_capability (struct pci_dev *dev, int cap);
335 int pci_find_ext_capability (struct pci_dev *dev, int cap);
336 struct pci_bus * pci_find_next_bus(const struct pci_bus *from);
338 struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from);
339 struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
340 unsigned int ss_vendor, unsigned int ss_device,
341 struct pci_dev *from);
342 struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn);
343 struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from);
344 int pci_dev_present(const struct pci_device_id *ids);
346 int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val);
347 int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val);
348 int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val);
349 int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val);
350 int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val);
351 int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val);
353 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
355 return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val);
357 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
359 return pci_bus_read_config_word (dev->bus, dev->devfn, where, val);
361 static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val)
363 return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val);
365 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
367 return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val);
369 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
371 return pci_bus_write_config_word (dev->bus, dev->devfn, where, val);
373 static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val)
375 return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val);
378 int pci_enable_device(struct pci_dev *dev);
379 int pci_enable_device_bars(struct pci_dev *dev, int mask);
380 void pci_disable_device(struct pci_dev *dev);
381 void pci_set_master(struct pci_dev *dev);
382 #define HAVE_PCI_SET_MWI
383 int pci_set_mwi(struct pci_dev *dev);
384 void pci_clear_mwi(struct pci_dev *dev);
385 int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
386 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
387 int pci_assign_resource(struct pci_dev *dev, int i);
389 /* ROM control related routines */
390 void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size);
391 void __iomem *pci_map_rom_copy(struct pci_dev *pdev, size_t *size);
392 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
393 void pci_remove_rom(struct pci_dev *pdev);
395 /* Power management related routines */
396 int pci_save_state(struct pci_dev *dev);
397 int pci_restore_state(struct pci_dev *dev);
398 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
399 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
400 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
402 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
403 void pci_bus_assign_resources(struct pci_bus *bus);
404 void pci_bus_size_bridges(struct pci_bus *bus);
405 int pci_claim_resource(struct pci_dev *, int);
406 void pci_assign_unassigned_resources(void);
407 void pdev_enable_device(struct pci_dev *);
408 void pdev_sort_resources(struct pci_dev *, struct resource_list *);
409 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
410 int (*)(struct pci_dev *, u8, u8));
411 #define HAVE_PCI_REQ_REGIONS 2
412 int pci_request_regions(struct pci_dev *, char *);
413 void pci_release_regions(struct pci_dev *);
414 int pci_request_region(struct pci_dev *, int, char *);
415 void pci_release_region(struct pci_dev *, int);
417 /* drivers/pci/bus.c */
418 int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
419 unsigned long size, unsigned long align,
420 unsigned long min, unsigned int type_mask,
421 void (*alignf)(void *, struct resource *,
422 unsigned long, unsigned long),
424 void pci_enable_bridges(struct pci_bus *bus);
426 /* New-style probing supporting hot-pluggable devices */
427 int pci_register_driver(struct pci_driver *);
428 void pci_unregister_driver(struct pci_driver *);
429 void pci_remove_behind_bridge(struct pci_dev *);
430 struct pci_driver *pci_dev_driver(const struct pci_dev *);
431 const struct pci_device_id *pci_match_device(struct pci_driver *drv, struct pci_dev *dev);
432 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev);
433 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass);
435 /* kmem_cache style wrapper around pci_alloc_consistent() */
437 #include <linux/dmapool.h>
439 #define pci_pool dma_pool
440 #define pci_pool_create(name, pdev, size, align, allocation) \
441 dma_pool_create(name, &pdev->dev, size, align, allocation)
442 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
443 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
444 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
446 enum pci_dma_burst_strategy {
447 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
448 strategy_parameter is N/A */
449 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
451 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
452 strategy_parameter byte boundaries */
455 #if defined(CONFIG_ISA) || defined(CONFIG_EISA)
456 extern struct pci_dev *isa_bridge;
460 u16 vector; /* kernel uses to write allocated vector */
461 u16 entry; /* driver uses to specify entry, OS writes */
464 #ifndef CONFIG_PCI_MSI
465 static inline void pci_scan_msi_device(struct pci_dev *dev) {}
466 static inline int pci_enable_msi(struct pci_dev *dev) {return -1;}
467 static inline void pci_disable_msi(struct pci_dev *dev) {}
468 static inline int pci_enable_msix(struct pci_dev* dev,
469 struct msix_entry *entries, int nvec) {return -1;}
470 static inline void pci_disable_msix(struct pci_dev *dev) {}
471 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {}
473 extern void pci_scan_msi_device(struct pci_dev *dev);
474 extern int pci_enable_msi(struct pci_dev *dev);
475 extern void pci_disable_msi(struct pci_dev *dev);
476 extern int pci_enable_msix(struct pci_dev* dev,
477 struct msix_entry *entries, int nvec);
478 extern void pci_disable_msix(struct pci_dev *dev);
479 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
483 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
484 * a PCI domain is defined to be a set of PCI busses which share
485 * configuration space.
487 #ifndef CONFIG_PCI_DOMAINS
488 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
489 static inline int pci_proc_domain(struct pci_bus *bus)
495 #else /* CONFIG_PCI is not enabled */
498 * If the system does not have PCI, clearly these return errors. Define
499 * these as simple inline functions to avoid hair in drivers.
502 #define _PCI_NOP(o,s,t) \
503 static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \
504 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
505 #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \
506 _PCI_NOP(o,word,u16 x) \
507 _PCI_NOP(o,dword,u32 x)
508 _PCI_NOP_ALL(read, *)
511 static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from)
514 static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn)
517 static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from)
520 static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device,
521 unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from)
524 static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
527 #define pci_dev_present(ids) (0)
528 #define pci_dev_put(dev) do { } while (0)
530 static inline void pci_set_master(struct pci_dev *dev) { }
531 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
532 static inline void pci_disable_device(struct pci_dev *dev) { }
533 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; }
534 static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;}
535 static inline int pci_register_driver(struct pci_driver *drv) { return 0;}
536 static inline void pci_unregister_driver(struct pci_driver *drv) { }
537 static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; }
538 static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; }
539 static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; }
541 /* Power management related routines */
542 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
543 static inline int pci_restore_state(struct pci_dev *dev) { return 0; }
544 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; }
545 static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; }
546 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; }
548 #define isa_bridge ((struct pci_dev *)NULL)
550 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
552 #endif /* CONFIG_PCI */
554 /* Include architecture-dependent settings and functions */
558 /* these helpers provide future and backwards compatibility
559 * for accessing popular PCI BAR info */
560 #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start)
561 #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end)
562 #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags)
563 #define pci_resource_len(dev,bar) \
564 ((pci_resource_start((dev),(bar)) == 0 && \
565 pci_resource_end((dev),(bar)) == \
566 pci_resource_start((dev),(bar))) ? 0 : \
568 (pci_resource_end((dev),(bar)) - \
569 pci_resource_start((dev),(bar)) + 1))
571 /* Similar to the helpers above, these manipulate per-pci_dev
572 * driver-specific data. They are really just a wrapper around
573 * the generic device structure functions of these calls.
575 static inline void *pci_get_drvdata (struct pci_dev *pdev)
577 return dev_get_drvdata(&pdev->dev);
580 static inline void pci_set_drvdata (struct pci_dev *pdev, void *data)
582 dev_set_drvdata(&pdev->dev, data);
585 /* If you want to know what to call your pci_dev, ask this function.
586 * Again, it's a wrapper around the generic device.
588 static inline char *pci_name(struct pci_dev *pdev)
590 return pdev->dev.bus_id;
594 /* Some archs don't want to expose struct resource to userland as-is
597 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
598 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
599 const struct resource *rsrc, u64 *start, u64 *end)
601 *start = rsrc->start;
604 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
608 * The world is not perfect and supplies us with broken PCI devices.
609 * For at least a part of these bugs we need a work-around, so both
610 * generic (drivers/pci/quirks.c) and per-architecture code can define
611 * fixup hooks to be called for particular buggy devices.
615 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
616 void (*hook)(struct pci_dev *dev);
619 enum pci_fixup_pass {
620 pci_fixup_early, /* Before probing BARs */
621 pci_fixup_header, /* After reading configuration header */
622 pci_fixup_final, /* Final phase of device fixups */
623 pci_fixup_enable, /* pci_enable_device() time */
626 /* Anonymous variables would be nice... */
627 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
628 static const struct pci_fixup __pci_fixup_##name __attribute_used__ \
629 __attribute__((__section__(#section))) = { vendor, device, hook };
630 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
631 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
632 vendor##device##hook, vendor, device, hook)
633 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
634 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
635 vendor##device##hook, vendor, device, hook)
636 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
637 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
638 vendor##device##hook, vendor, device, hook)
639 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
640 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
641 vendor##device##hook, vendor, device, hook)
644 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
646 extern int pci_pci_problems;
647 #define PCIPCI_FAIL 1
648 #define PCIPCI_TRITON 2
649 #define PCIPCI_NATOMA 4
650 #define PCIPCI_VIAETBF 8
651 #define PCIPCI_VSFX 16
652 #define PCIPCI_ALIMAGIK 32
654 #endif /* __KERNEL__ */
655 #endif /* LINUX_PCI_H */