pci.h 52.0 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
/*
 *	pci.h
 *
 *	PCI defines and function prototypes
 *	Copyright 1994, Drew Eckhardt
 *	Copyright 1997--1999 Martin Mares <mj@ucw.cz>
 *
 *	For more information, please consult the following manuals (look at
 *	http://www.pcisig.com/ for how to get them):
 *
 *	PCI BIOS Specification
 *	PCI Local Bus Specification
 *	PCI to PCI Bridge Specification
 *	PCI System Design Guide
 */

#ifndef LINUX_PCI_H
#define LINUX_PCI_H

A
Alex Chiang 已提交
20
#include <linux/pci_regs.h>	/* The pci register defines */
L
Linus Torvalds 已提交
21 22 23 24 25 26 27 28 29

/*
 * The PCI interface treats multi-function devices as independent
 * devices.  The slot/function address of each device is encoded
 * in a single byte as follows:
 *
 *	7:3 = slot
 *	2:0 = function
 */
30
#define PCI_DEVFN(slot, func)	((((slot) & 0x1f) << 3) | ((func) & 0x07))
L
Linus Torvalds 已提交
31 32 33 34 35 36 37 38 39 40 41 42
#define PCI_SLOT(devfn)		(((devfn) >> 3) & 0x1f)
#define PCI_FUNC(devfn)		((devfn) & 0x07)

/* Ioctls for /proc/bus/pci/X/Y nodes. */
#define PCIIOC_BASE		('P' << 24 | 'C' << 16 | 'I' << 8)
#define PCIIOC_CONTROLLER	(PCIIOC_BASE | 0x00)	/* Get controller for PCI device. */
#define PCIIOC_MMAP_IS_IO	(PCIIOC_BASE | 0x01)	/* Set mmap state to I/O space. */
#define PCIIOC_MMAP_IS_MEM	(PCIIOC_BASE | 0x02)	/* Set mmap state to MEM space. */
#define PCIIOC_WRITE_COMBINE	(PCIIOC_BASE | 0x03)	/* Enable/disable write-combining. */

#ifdef __KERNEL__

43 44
#include <linux/mod_devicetable.h>

L
Linus Torvalds 已提交
45
#include <linux/types.h>
46
#include <linux/init.h>
L
Linus Torvalds 已提交
47 48
#include <linux/ioport.h>
#include <linux/list.h>
49
#include <linux/compiler.h>
L
Linus Torvalds 已提交
50
#include <linux/errno.h>
A
Alex Chiang 已提交
51
#include <linux/kobject.h>
52
#include <asm/atomic.h>
L
Linus Torvalds 已提交
53
#include <linux/device.h>
54
#include <linux/io.h>
55
#include <linux/irqreturn.h>
L
Linus Torvalds 已提交
56

57 58 59
/* Include the ID list */
#include <linux/pci_ids.h>

A
Alex Chiang 已提交
60 61 62 63 64 65 66 67 68
/* pci_slot represents a physical slot */
struct pci_slot {
	struct pci_bus *bus;		/* The bus this slot is on */
	struct list_head list;		/* node in list of slots on this bus */
	struct hotplug_slot *hotplug;	/* Hotplug info (migrate over time) */
	unsigned char number;		/* PCI_SLOT(pci_dev->devfn) */
	struct kobject kobj;
};

69 70 71 72 73
static inline const char *pci_slot_name(const struct pci_slot *slot)
{
	return kobject_name(&slot->kobj);
}

L
Linus Torvalds 已提交
74 75 76 77 78 79 80 81 82 83 84 85
/* File state for mmap()s on /proc/bus/pci/X/Y */
enum pci_mmap_state {
	pci_mmap_io,
	pci_mmap_mem
};

/* This defines the direction arg to the DMA mapping routines. */
#define PCI_DMA_BIDIRECTIONAL	0
#define PCI_DMA_TODEVICE	1
#define PCI_DMA_FROMDEVICE	2
#define PCI_DMA_NONE		3

86 87 88 89 90 91 92 93 94 95 96
/*
 *  For PCI devices, the region numbers are assigned this way:
 */
enum {
	/* #0-5: standard PCI resources */
	PCI_STD_RESOURCES,
	PCI_STD_RESOURCE_END = 5,

	/* #6: expansion ROM resource */
	PCI_ROM_RESOURCE,

97 98 99 100 101 102
	/* device specific resources */
#ifdef CONFIG_PCI_IOV
	PCI_IOV_RESOURCES,
	PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
#endif

103 104 105 106 107 108 109 110 111 112 113 114 115
	/* resources assigned to buses behind the bridge */
#define PCI_BRIDGE_RESOURCE_NUM 4

	PCI_BRIDGE_RESOURCES,
	PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
				  PCI_BRIDGE_RESOURCE_NUM - 1,

	/* total resources associated with a PCI device */
	PCI_NUM_RESOURCES,

	/* preserve this for compatibility */
	DEVICE_COUNT_RESOURCE
};
L
Linus Torvalds 已提交
116 117 118

typedef int __bitwise pci_power_t;

119 120 121
#define PCI_D0		((pci_power_t __force) 0)
#define PCI_D1		((pci_power_t __force) 1)
#define PCI_D2		((pci_power_t __force) 2)
L
Linus Torvalds 已提交
122 123
#define PCI_D3hot	((pci_power_t __force) 3)
#define PCI_D3cold	((pci_power_t __force) 4)
124
#define PCI_UNKNOWN	((pci_power_t __force) 5)
125
#define PCI_POWER_ERROR	((pci_power_t __force) -1)
L
Linus Torvalds 已提交
126

A
Alan Stern 已提交
127 128 129 130 131 132 133 134
/* Remember to update this when the list above changes! */
extern const char *pci_power_names[];

static inline const char *pci_power_name(pci_power_t state)
{
	return pci_power_names[1 + (int) state];
}

135 136 137 138
#define PCI_PM_D2_DELAY	200
#define PCI_PM_D3_WAIT	10
#define PCI_PM_BUS_WAIT	50

139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
/** The pci_channel state describes connectivity between the CPU and
 *  the pci device.  If some PCI bus between here and the pci device
 *  has crashed or locked up, this info is reflected here.
 */
typedef unsigned int __bitwise pci_channel_state_t;

enum pci_channel_state {
	/* I/O channel is in normal state */
	pci_channel_io_normal = (__force pci_channel_state_t) 1,

	/* I/O to channel is blocked */
	pci_channel_io_frozen = (__force pci_channel_state_t) 2,

	/* PCI card is dead */
	pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
};

B
Brian King 已提交
156 157 158 159 160 161 162 163 164 165 166 167 168
typedef unsigned int __bitwise pcie_reset_state_t;

enum pcie_reset_state {
	/* Reset is NOT asserted (Use to deassert reset) */
	pcie_deassert_reset = (__force pcie_reset_state_t) 1,

	/* Use #PERST to reset PCI-E device */
	pcie_warm_reset = (__force pcie_reset_state_t) 2,

	/* Use PCI-E Hot Reset to reset device */
	pcie_hot_reset = (__force pcie_reset_state_t) 3
};

169 170 171 172 173 174
typedef unsigned short __bitwise pci_dev_flags_t;
enum pci_dev_flags {
	/* INTX_DISABLE in PCI_COMMAND register disables MSI
	 * generation too.
	 */
	PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
175 176
	/* Device configuration is irrevocably lost if disabled into D3 */
	PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
177 178
};

179 180 181 182 183
enum pci_irq_reroute_variant {
	INTEL_IRQ_REROUTE_VARIANT = 1,
	MAX_IRQ_REROUTE_VARIANTS = 3
};

184 185
typedef unsigned short __bitwise pci_bus_flags_t;
enum pci_bus_flags {
186 187
	PCI_BUS_FLAGS_NO_MSI   = (__force pci_bus_flags_t) 1,
	PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
188 189
};

190 191 192 193 194 195 196 197 198 199 200 201 202
/* Based on the PCI Hotplug Spec, but some values are made up by us */
enum pci_bus_speed {
	PCI_SPEED_33MHz			= 0x00,
	PCI_SPEED_66MHz			= 0x01,
	PCI_SPEED_66MHz_PCIX		= 0x02,
	PCI_SPEED_100MHz_PCIX		= 0x03,
	PCI_SPEED_133MHz_PCIX		= 0x04,
	PCI_SPEED_66MHz_PCIX_ECC	= 0x05,
	PCI_SPEED_100MHz_PCIX_ECC	= 0x06,
	PCI_SPEED_133MHz_PCIX_ECC	= 0x07,
	PCI_SPEED_66MHz_PCIX_266	= 0x09,
	PCI_SPEED_100MHz_PCIX_266	= 0x0a,
	PCI_SPEED_133MHz_PCIX_266	= 0x0b,
203 204 205 206 207
	AGP_UNKNOWN			= 0x0c,
	AGP_1X				= 0x0d,
	AGP_2X				= 0x0e,
	AGP_4X				= 0x0f,
	AGP_8X				= 0x10,
208 209 210 211 212
	PCI_SPEED_66MHz_PCIX_533	= 0x11,
	PCI_SPEED_100MHz_PCIX_533	= 0x12,
	PCI_SPEED_133MHz_PCIX_533	= 0x13,
	PCIE_SPEED_2_5GT		= 0x14,
	PCIE_SPEED_5_0GT		= 0x15,
213
	PCIE_SPEED_8_0GT		= 0x16,
214 215 216
	PCI_SPEED_UNKNOWN		= 0xff,
};

217
struct pci_cap_saved_data {
218
	char cap_nr;
219
	unsigned int size;
220 221 222
	u32 data[0];
};

223 224 225 226 227
struct pci_cap_saved_state {
	struct hlist_node next;
	struct pci_cap_saved_data cap;
};

S
Shaohua Li 已提交
228
struct pcie_link_state;
229
struct pci_vpd;
230
struct pci_sriov;
Y
Yu Zhao 已提交
231
struct pci_ats;
232

L
Linus Torvalds 已提交
233 234 235 236 237 238 239 240 241 242
/*
 * The pci_dev structure is used to describe PCI devices.
 */
struct pci_dev {
	struct list_head bus_list;	/* node in per-bus list */
	struct pci_bus	*bus;		/* bus this device is on */
	struct pci_bus	*subordinate;	/* bus this device bridges to */

	void		*sysdata;	/* hook for sys-specific extension */
	struct proc_dir_entry *procent;	/* device entry in /proc/bus/pci */
A
Alex Chiang 已提交
243
	struct pci_slot	*slot;		/* Physical slot this device is in */
L
Linus Torvalds 已提交
244 245 246 247 248 249 250

	unsigned int	devfn;		/* encoded device & function index */
	unsigned short	vendor;
	unsigned short	device;
	unsigned short	subsystem_vendor;
	unsigned short	subsystem_device;
	unsigned int	class;		/* 3 bytes: (base,sub,prog-if) */
A
Auke Kok 已提交
251
	u8		revision;	/* PCI revision, low byte of class word */
L
Linus Torvalds 已提交
252
	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
253
	u8		pcie_cap;	/* PCI-E capability offset */
254
	u8		pcie_type;	/* PCI-E device/port type */
L
Linus Torvalds 已提交
255
	u8		rom_base_reg;	/* which config register controls the ROM */
256
	u8		pin;  		/* which interrupt pin this device uses */
L
Linus Torvalds 已提交
257 258 259 260 261 262 263 264

	struct pci_driver *driver;	/* which driver has allocated this device */
	u64		dma_mask;	/* Mask of the bits of bus address this
					   device implements.  Normally this is
					   0xffffffff.  You only need to change
					   this if your device has broken DMA
					   or supports 64-bit transfers.  */

265 266
	struct device_dma_parameters dma_parms;

L
Linus Torvalds 已提交
267 268 269
	pci_power_t     current_state;  /* Current operating state. In ACPI-speak,
					   this is D0-D3, D0 being fully functional,
					   and D3 being off. */
270 271 272 273
	int		pm_cap;		/* PM capability offset in the
					   configuration space */
	unsigned int	pme_support:5;	/* Bitmask of states from which PME#
					   can be generated */
274
	unsigned int	pme_interrupt:1;
275 276 277
	unsigned int	d1_support:1;	/* Low power state D1 is supported */
	unsigned int	d2_support:1;	/* Low power state D2 is supported */
	unsigned int	no_d1d2:1;	/* Only allow D0 and D3 */
J
Jacob Pan 已提交
278 279
	unsigned int	mmio_always_on:1;	/* disallow turning off io/mem
						   decoding during bar sizing */
280
	unsigned int	wakeup_prepared:1;
281
	unsigned int	d3_delay;	/* D3->D0 transition time in ms */
L
Linus Torvalds 已提交
282

S
Shaohua Li 已提交
283 284 285 286
#ifdef CONFIG_PCIEASPM
	struct pcie_link_state	*link_state;	/* ASPM link state. */
#endif

287
	pci_channel_state_t error_state;	/* current connectivity state */
L
Linus Torvalds 已提交
288 289 290 291 292 293 294 295 296 297
	struct	device	dev;		/* Generic device interface */

	int		cfg_size;	/* Size of configuration space */

	/*
	 * Instead of touching interrupt line and base address registers
	 * directly, use the values stored here. They might be different!
	 */
	unsigned int	irq;
	struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
298
	resource_size_t	fw_addr[DEVICE_COUNT_RESOURCE]; /* FW-assigned addr */
L
Linus Torvalds 已提交
299 300 301 302 303

	/* These fields are used by common fixups */
	unsigned int	transparent:1;	/* Transparent PCI bridge */
	unsigned int	multifunction:1;/* Part of multi-function device */
	/* keep track of device state */
304
	unsigned int	is_added:1;
L
Linus Torvalds 已提交
305
	unsigned int	is_busmaster:1; /* device is busmaster */
306
	unsigned int	no_msi:1;	/* device may not use msi */
307
	unsigned int	block_ucfg_access:1;	/* userspace config space access is blocked */
308
	unsigned int	broken_parity_status:1;	/* Device generates false positive parity */
309
	unsigned int	irq_reroute_variant:2;	/* device needs IRQ rerouting variant */
310 311
	unsigned int 	msi_enabled:1;
	unsigned int	msix_enabled:1;
Y
Yu Zhao 已提交
312
	unsigned int	ari_enabled:1;	/* ARI forwarding */
T
Tejun Heo 已提交
313
	unsigned int	is_managed:1;
K
Kenji Kaneshige 已提交
314 315
	unsigned int	is_pcie:1;	/* Obsolete. Will be removed.
					   Use pci_is_pcie() instead */
316
	unsigned int    needs_freset:1; /* Dev requires fundamental reset */
317
	unsigned int	state_saved:1;
318
	unsigned int	is_physfn:1;
319
	unsigned int	is_virtfn:1;
320
	unsigned int	reset_fn:1;
321
	unsigned int    is_hotplug_bridge:1;
322 323
	unsigned int    __aer_firmware_first_valid:1;
	unsigned int	__aer_firmware_first:1;
324
	pci_dev_flags_t dev_flags;
325
	atomic_t	enable_cnt;	/* pci_enable_device has been called */
326

L
Linus Torvalds 已提交
327
	u32		saved_config_space[16]; /* config space saved at suspend time */
328
	struct hlist_head saved_cap_space;
L
Linus Torvalds 已提交
329 330 331
	struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
	int rom_attr_enabled;		/* has display of the rom attribute been enabled? */
	struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
332
	struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
E
Eric W. Biederman 已提交
333
#ifdef CONFIG_PCI_MSI
334
	struct list_head msi_list;
E
Eric W. Biederman 已提交
335
#endif
336
	struct pci_vpd *vpd;
337
#ifdef CONFIG_PCI_IOV
338 339 340 341
	union {
		struct pci_sriov *sriov;	/* SR-IOV capability related */
		struct pci_dev *physfn;	/* the PF this VF is associated with */
	};
Y
Yu Zhao 已提交
342
	struct pci_ats	*ats;	/* Address Translation Service */
343
#endif
L
Linus Torvalds 已提交
344 345
};

346 347 348 349 350 351 352 353 354 355
static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
{
#ifdef CONFIG_PCI_IOV
	if (dev->is_virtfn)
		dev = dev->physfn;
#endif

	return dev;
}

356 357
extern struct pci_dev *alloc_pci_dev(void);

L
Linus Torvalds 已提交
358 359 360 361
#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
#define	to_pci_dev(n) container_of(n, struct pci_dev, dev)
#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)

362 363 364 365 366
static inline int pci_channel_offline(struct pci_dev *pdev)
{
	return (pdev->error_state != pci_channel_io_normal);
}

367
static inline struct pci_cap_saved_state *pci_find_saved_cap(
368
	struct pci_dev *pci_dev, char cap)
369 370 371 372 373
{
	struct pci_cap_saved_state *tmp;
	struct hlist_node *pos;

	hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
374
		if (tmp->cap.cap_nr == cap)
375 376 377 378 379 380 381 382 383 384 385
			return tmp;
	}
	return NULL;
}

static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
	struct pci_cap_saved_state *new_cap)
{
	hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
}

386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405
/*
 * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond
 * to P2P or CardBus bridge windows) go in a table.  Additional ones (for
 * buses below host bridges or subtractive decode bridges) go in the list.
 * Use pci_bus_for_each_resource() to iterate through all the resources.
 */

/*
 * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly
 * and there's no way to program the bridge with the details of the window.
 * This does not apply to ACPI _CRS windows, even with the _DEC subtractive-
 * decode bit set, because they are explicit and can be programmed with _SRS.
 */
#define PCI_SUBTRACTIVE_DECODE	0x1

struct pci_bus_resource {
	struct list_head list;
	struct resource *res;
	unsigned int flags;
};
406 407

#define PCI_REGION_FLAG_MASK	0x0fU	/* These bits of resource flags tell us the PCI region flags */
L
Linus Torvalds 已提交
408 409 410 411 412 413 414

struct pci_bus {
	struct list_head node;		/* node in list of buses */
	struct pci_bus	*parent;	/* parent bus this bridge is on */
	struct list_head children;	/* list of child buses */
	struct list_head devices;	/* list of devices on this bus */
	struct pci_dev	*self;		/* bridge device as seen by parent */
A
Alex Chiang 已提交
415
	struct list_head slots;		/* list of slots on this bus */
416 417
	struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
	struct list_head resources;	/* address space routed to this bus */
L
Linus Torvalds 已提交
418 419 420 421 422 423 424 425 426

	struct pci_ops	*ops;		/* configuration access functions */
	void		*sysdata;	/* hook for sys-specific extension */
	struct proc_dir_entry *procdir;	/* directory entry in /proc/bus/pci */

	unsigned char	number;		/* bus number */
	unsigned char	primary;	/* number of primary bridge */
	unsigned char	secondary;	/* number of secondary bridge */
	unsigned char	subordinate;	/* max number of subordinate buses */
427 428
	unsigned char	max_bus_speed;	/* enum pci_bus_speed */
	unsigned char	cur_bus_speed;	/* enum pci_bus_speed */
L
Linus Torvalds 已提交
429 430 431 432

	char		name[48];

	unsigned short  bridge_ctl;	/* manage NO_ISA/FBB/et al behaviors */
433
	pci_bus_flags_t bus_flags;	/* Inherited by child busses */
L
Linus Torvalds 已提交
434
	struct device		*bridge;
435
	struct device		dev;
L
Linus Torvalds 已提交
436 437
	struct bin_attribute	*legacy_io; /* legacy I/O for this bus */
	struct bin_attribute	*legacy_mem; /* legacy mem */
438
	unsigned int		is_added:1;
L
Linus Torvalds 已提交
439 440 441
};

#define pci_bus_b(n)	list_entry(n, struct pci_bus, node)
442
#define to_pci_bus(n)	container_of(n, struct pci_bus, dev)
L
Linus Torvalds 已提交
443

K
Kenji Kaneshige 已提交
444 445 446 447 448 449 450 451 452
/*
 * Returns true if the pci bus is root (behind host-pci bridge),
 * false otherwise
 */
static inline bool pci_is_root_bus(struct pci_bus *pbus)
{
	return !(pbus->parent);
}

453 454 455 456 457 458 459 460 461
#ifdef CONFIG_PCI_MSI
static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
{
	return pci_dev->msi_enabled || pci_dev->msix_enabled;
}
#else
static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
#endif

L
Linus Torvalds 已提交
462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
/*
 * Error values that may be returned by PCI functions.
 */
#define PCIBIOS_SUCCESSFUL		0x00
#define PCIBIOS_FUNC_NOT_SUPPORTED	0x81
#define PCIBIOS_BAD_VENDOR_ID		0x83
#define PCIBIOS_DEVICE_NOT_FOUND	0x86
#define PCIBIOS_BAD_REGISTER_NUMBER	0x87
#define PCIBIOS_SET_FAILED		0x88
#define PCIBIOS_BUFFER_TOO_SMALL	0x89

/* Low-level architecture-dependent routines */

struct pci_ops {
	int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
	int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
};

480 481 482 483 484 485 486 487
/*
 * ACPI needs to be able to access PCI config space before we've done a
 * PCI bus scan and created pci_bus structures.
 */
extern int raw_pci_read(unsigned int domain, unsigned int bus,
			unsigned int devfn, int reg, int len, u32 *val);
extern int raw_pci_write(unsigned int domain, unsigned int bus,
			unsigned int devfn, int reg, int len, u32 val);
L
Linus Torvalds 已提交
488 489

struct pci_bus_region {
490 491
	resource_size_t start;
	resource_size_t end;
L
Linus Torvalds 已提交
492 493 494 495 496 497 498
};

struct pci_dynids {
	spinlock_t lock;            /* protects list, index */
	struct list_head list;      /* for IDs added at runtime */
};

499 500
/* ---------------------------------------------------------------- */
/** PCI Error Recovery System (PCI-ERS).  If a PCI device driver provides
501
 *  a set of callbacks in struct pci_error_handlers, then that device driver
502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525
 *  will be notified of PCI bus errors, and will be driven to recovery
 *  when an error occurs.
 */

typedef unsigned int __bitwise pci_ers_result_t;

enum pci_ers_result {
	/* no result/none/not supported in device driver */
	PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,

	/* Device driver can recover without slot reset */
	PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,

	/* Device driver wants slot to be reset. */
	PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,

	/* Device has completely failed, is unrecoverable */
	PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,

	/* Device driver is fully recovered and operational */
	PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
};

/* PCI bus error event callbacks */
526
struct pci_error_handlers {
527 528
	/* PCI bus error detected on this device */
	pci_ers_result_t (*error_detected)(struct pci_dev *dev,
529
					   enum pci_channel_state error);
530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545

	/* MMIO has been re-enabled, but not DMA */
	pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);

	/* PCI Express link has been reset */
	pci_ers_result_t (*link_reset)(struct pci_dev *dev);

	/* PCI slot has been reset */
	pci_ers_result_t (*slot_reset)(struct pci_dev *dev);

	/* Device driver may resume normal operations */
	void (*resume)(struct pci_dev *dev);
};

/* ---------------------------------------------------------------- */

L
Linus Torvalds 已提交
546 547 548
struct module;
struct pci_driver {
	struct list_head node;
549
	const char *name;
L
Linus Torvalds 已提交
550 551 552 553
	const struct pci_device_id *id_table;	/* must be non-NULL for probe to be called */
	int  (*probe)  (struct pci_dev *dev, const struct pci_device_id *id);	/* New device inserted */
	void (*remove) (struct pci_dev *dev);	/* Device removed (NULL if not a hot-plug capable driver) */
	int  (*suspend) (struct pci_dev *dev, pm_message_t state);	/* Device suspended */
L
Linus Torvalds 已提交
554 555
	int  (*suspend_late) (struct pci_dev *dev, pm_message_t state);
	int  (*resume_early) (struct pci_dev *dev);
L
Linus Torvalds 已提交
556
	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
G
Greg KH 已提交
557
	void (*shutdown) (struct pci_dev *dev);
558
	struct pci_error_handlers *err_handler;
L
Linus Torvalds 已提交
559 560 561 562
	struct device_driver	driver;
	struct pci_dynids dynids;
};

563
#define	to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
L
Linus Torvalds 已提交
564

565
/**
566
 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
567 568 569 570 571
 * @_table: device table name
 *
 * This macro is used to create a struct pci_device_id array (a device table)
 * in a generic manner.
 */
572
#define DEFINE_PCI_DEVICE_TABLE(_table) \
573 574
	const struct pci_device_id _table[] __devinitconst

L
Linus Torvalds 已提交
575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593
/**
 * PCI_DEVICE - macro used to describe a specific pci device
 * @vend: the 16 bit PCI Vendor ID
 * @dev: the 16 bit PCI Device ID
 *
 * This macro is used to create a struct pci_device_id that matches a
 * specific device.  The subvendor and subdevice fields will be set to
 * PCI_ANY_ID.
 */
#define PCI_DEVICE(vend,dev) \
	.vendor = (vend), .device = (dev), \
	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID

/**
 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
 * @dev_class: the class, subclass, prog-if triple for this device
 * @dev_class_mask: the class mask for this device
 *
 * This macro is used to create a struct pci_device_id that matches a
594
 * specific PCI class.  The vendor, device, subvendor, and subdevice
L
Linus Torvalds 已提交
595 596 597 598 599 600 601
 * fields will be set to PCI_ANY_ID.
 */
#define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
	.class = (dev_class), .class_mask = (dev_class_mask), \
	.vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID

602 603
/**
 * PCI_VDEVICE - macro used to describe a specific pci device in short form
604 605
 * @vendor: the vendor name
 * @device: the 16 bit PCI Device ID
606 607 608 609 610 611 612 613 614 615 616
 *
 * This macro is used to create a struct pci_device_id that matches a
 * specific PCI device.  The subvendor, and subdevice fields will be set
 * to PCI_ANY_ID. The macro allows the next field to follow as the device
 * private data.
 */

#define PCI_VDEVICE(vendor, device)		\
	PCI_VENDOR_ID_##vendor, (device),	\
	PCI_ANY_ID, PCI_ANY_ID, 0, 0

L
Linus Torvalds 已提交
617 618 619 620 621 622 623 624
/* these external functions are only available when PCI support is enabled */
#ifdef CONFIG_PCI

extern struct bus_type pci_bus_type;

/* Do NOT directly access these two variables, unless you are arch specific pci
 * code, or pci core code. */
extern struct list_head pci_root_buses;	/* list of all known PCI buses */
Z
Zhang, Yanmin 已提交
625 626
/* Some device drivers need know if pci is initiated */
extern int no_pci_devices(void);
L
Linus Torvalds 已提交
627 628

void pcibios_fixup_bus(struct pci_bus *);
629
int __must_check pcibios_enable_device(struct pci_dev *, int mask);
630
char *pcibios_setup(char *str);
L
Linus Torvalds 已提交
631 632

/* Used only when drivers/pci/setup.c is used */
633
resource_size_t pcibios_align_resource(void *, const struct resource *,
634
				resource_size_t,
635
				resource_size_t);
L
Linus Torvalds 已提交
636 637
void pcibios_update_irq(struct pci_dev *, int irq);

638 639 640
/* Weak but can be overriden by arch */
void pci_fixup_cardbus(struct pci_bus *);

L
Linus Torvalds 已提交
641 642
/* Generic PCI functions used internally */

643
void pcibios_scan_specific_bus(int busn);
L
Linus Torvalds 已提交
644
extern struct pci_bus *pci_find_bus(int domain, int busnr);
645
void pci_bus_add_devices(const struct pci_bus *bus);
646 647
struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
				      struct pci_ops *ops, void *sysdata);
648
static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
649
					   void *sysdata)
L
Linus Torvalds 已提交
650
{
651 652 653 654 655
	struct pci_bus *root_bus;
	root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
	if (root_bus)
		pci_bus_add_devices(root_bus);
	return root_bus;
L
Linus Torvalds 已提交
656
}
657 658 659 660
struct pci_bus *pci_create_bus(struct device *parent, int bus,
			       struct pci_ops *ops, void *sysdata);
struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
				int busnr);
661
void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
A
Alex Chiang 已提交
662
struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
663 664
				 const char *name,
				 struct hotplug_slot *hotplug);
A
Alex Chiang 已提交
665
void pci_destroy_slot(struct pci_slot *slot);
666
void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
L
Linus Torvalds 已提交
667
int pci_scan_slot(struct pci_bus *bus, int devfn);
668
struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
669
void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
L
Linus Torvalds 已提交
670
unsigned int pci_scan_child_bus(struct pci_bus *bus);
671
int __must_check pci_bus_add_device(struct pci_dev *dev);
L
Linus Torvalds 已提交
672
void pci_read_bridge_bases(struct pci_bus *child);
673 674
struct resource *pci_find_parent_resource(const struct pci_dev *dev,
					  struct resource *res);
675
u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
L
Linus Torvalds 已提交
676
int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
677
u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
L
Linus Torvalds 已提交
678 679 680 681
extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
extern void pci_dev_put(struct pci_dev *dev);
extern void pci_remove_bus(struct pci_bus *b);
extern void pci_remove_bus_device(struct pci_dev *dev);
S
Satoru Takeuchi 已提交
682
extern void pci_stop_bus_device(struct pci_dev *dev);
683
void pci_setup_cardbus(struct pci_bus *bus);
684
extern void pci_sort_breadthfirst(void);
685 686 687
#define dev_is_pci(d) ((d)->bus == &pci_bus_type)
#define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
#define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0))
L
Linus Torvalds 已提交
688 689 690

/* Generic PCI functions exported to card drivers */

691 692 693 694 695 696 697
enum pci_lost_interrupt_reason {
	PCI_LOST_IRQ_NO_INFORMATION = 0,
	PCI_LOST_IRQ_DISABLE_MSI,
	PCI_LOST_IRQ_DISABLE_MSIX,
	PCI_LOST_IRQ_DISABLE_ACPI,
};
enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
698 699 700
int pci_find_capability(struct pci_dev *dev, int cap);
int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
int pci_find_ext_capability(struct pci_dev *dev, int cap);
701 702
int pci_bus_find_ext_capability(struct pci_bus *bus, unsigned int devfn,
				int cap);
703 704
int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
A
Alan Cox 已提交
705
struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
L
Linus Torvalds 已提交
706

707 708
struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
				struct pci_dev *from);
709
struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
L
Linus Torvalds 已提交
710
				unsigned int ss_vendor, unsigned int ss_device,
711
				struct pci_dev *from);
712
struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
713 714 715 716 717 718 719
struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
					    unsigned int devfn);
static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
						   unsigned int devfn)
{
	return pci_get_domain_bus_and_slot(0, bus, devfn);
}
720
struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
L
Linus Torvalds 已提交
721 722
int pci_dev_present(const struct pci_device_id *ids);

723 724 725 726 727 728 729 730 731 732 733 734
int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
			     int where, u8 *val);
int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
			     int where, u16 *val);
int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
			      int where, u32 *val);
int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
			      int where, u8 val);
int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
			      int where, u16 val);
int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
			       int where, u32 val);
H
Huang Ying 已提交
735
struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);
L
Linus Torvalds 已提交
736 737 738

static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
{
739
	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
740 741 742
}
static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
{
743
	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
744
}
745 746
static inline int pci_read_config_dword(struct pci_dev *dev, int where,
					u32 *val)
L
Linus Torvalds 已提交
747
{
748
	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
749 750 751
}
static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
{
752
	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
753 754 755
}
static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
{
756
	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
757
}
758 759
static inline int pci_write_config_dword(struct pci_dev *dev, int where,
					 u32 val)
L
Linus Torvalds 已提交
760
{
761
	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
762 763
}

764
int __must_check pci_enable_device(struct pci_dev *dev);
765 766
int __must_check pci_enable_device_io(struct pci_dev *dev);
int __must_check pci_enable_device_mem(struct pci_dev *dev);
767
int __must_check pci_reenable_device(struct pci_dev *);
T
Tejun Heo 已提交
768 769 770
int __must_check pcim_enable_device(struct pci_dev *pdev);
void pcim_pin_device(struct pci_dev *pdev);

771 772 773 774 775
static inline int pci_is_enabled(struct pci_dev *pdev)
{
	return (atomic_read(&pdev->enable_cnt) > 0);
}

T
Tejun Heo 已提交
776 777 778 779 780
static inline int pci_is_managed(struct pci_dev *pdev)
{
	return pdev->is_managed;
}

L
Linus Torvalds 已提交
781 782
void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
783
void pci_clear_master(struct pci_dev *dev);
B
Brian King 已提交
784
int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
T
Tejun Heo 已提交
785
int pci_set_cacheline_size(struct pci_dev *dev);
L
Linus Torvalds 已提交
786
#define HAVE_PCI_SET_MWI
787
int __must_check pci_set_mwi(struct pci_dev *dev);
R
Randy Dunlap 已提交
788
int pci_try_set_mwi(struct pci_dev *dev);
L
Linus Torvalds 已提交
789
void pci_clear_mwi(struct pci_dev *dev);
B
Brett M Russ 已提交
790
void pci_intx(struct pci_dev *dev, int enable);
791
void pci_msi_off(struct pci_dev *dev);
792
int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
793
int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
794 795 796
int pcix_get_max_mmrbc(struct pci_dev *dev);
int pcix_get_mmrbc(struct pci_dev *dev);
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
797
int pcie_get_readrq(struct pci_dev *dev);
798
int pcie_set_readrq(struct pci_dev *dev, int rq);
Y
Yu Zhao 已提交
799
int __pci_reset_function(struct pci_dev *dev);
800
int pci_reset_function(struct pci_dev *dev);
801
void pci_update_resource(struct pci_dev *dev, int resno);
802
int __must_check pci_assign_resource(struct pci_dev *dev, int i);
803
int pci_select_bars(struct pci_dev *dev, unsigned long flags);
L
Linus Torvalds 已提交
804 805

/* ROM control related routines */
A
Alan Cox 已提交
806 807
int pci_enable_rom(struct pci_dev *pdev);
void pci_disable_rom(struct pci_dev *pdev);
808
void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
L
Linus Torvalds 已提交
809
void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
810
size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
L
Linus Torvalds 已提交
811 812 813

/* Power management related routines */
int pci_save_state(struct pci_dev *dev);
814
void pci_restore_state(struct pci_dev *dev);
815 816 817 818
struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev);
int pci_load_saved_state(struct pci_dev *dev, struct pci_saved_state *state);
int pci_load_and_free_saved_state(struct pci_dev *dev,
				  struct pci_saved_state **state);
819
int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
820 821
int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
822
bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
823
void pci_pme_active(struct pci_dev *dev, bool enable);
824 825
int __pci_enable_wake(struct pci_dev *dev, pci_power_t state,
		      bool runtime, bool enable);
826
int pci_wake_from_d3(struct pci_dev *dev, bool enable);
827
pci_power_t pci_target_state(struct pci_dev *dev);
828 829
int pci_prepare_to_sleep(struct pci_dev *dev);
int pci_back_from_sleep(struct pci_dev *dev);
830
bool pci_dev_run_wake(struct pci_dev *dev);
831 832
bool pci_check_pme_status(struct pci_dev *dev);
void pci_pme_wakeup_bus(struct pci_bus *bus);
L
Linus Torvalds 已提交
833

834 835 836 837 838
static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
				  bool enable)
{
	return __pci_enable_wake(dev, state, false, enable);
}
L
Linus Torvalds 已提交
839

840 841 842 843 844
#define PCI_EXP_IDO_REQUEST	(1<<0)
#define PCI_EXP_IDO_COMPLETION	(1<<1)
void pci_enable_ido(struct pci_dev *dev, unsigned long type);
void pci_disable_ido(struct pci_dev *dev, unsigned long type);

845 846 847 848 849 850 851
enum pci_obff_signal_type {
	PCI_EXP_OBFF_SIGNAL_L0,
	PCI_EXP_OBFF_SIGNAL_ALWAYS,
};
int pci_enable_obff(struct pci_dev *dev, enum pci_obff_signal_type);
void pci_disable_obff(struct pci_dev *dev);

852 853 854 855 856
bool pci_ltr_supported(struct pci_dev *dev);
int pci_enable_ltr(struct pci_dev *dev);
void pci_disable_ltr(struct pci_dev *dev);
int pci_set_ltr(struct pci_dev *dev, int snoop_lat_ns, int nosnoop_lat_ns);

857 858 859 860
/* For use by arch with custom probe code */
void set_pcie_port_type(struct pci_dev *pdev);
void set_pcie_hotplug_bridge(struct pci_dev *pdev);

861
/* Functions for PCI Hotplug drivers to use */
862
int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
A
Alex Chiang 已提交
863 864 865
#ifdef CONFIG_HOTPLUG
unsigned int pci_rescan_bus(struct pci_bus *bus);
#endif
866

867 868 869
/* Vital product data routines */
ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
870
int pci_vpd_truncate(struct pci_dev *dev, size_t size);
871

L
Linus Torvalds 已提交
872
/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
873
void pci_bus_assign_resources(const struct pci_bus *bus);
L
Linus Torvalds 已提交
874 875 876
void pci_bus_size_bridges(struct pci_bus *bus);
int pci_claim_resource(struct pci_dev *, int);
void pci_assign_unassigned_resources(void);
877
void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
L
Linus Torvalds 已提交
878 879
void pdev_enable_device(struct pci_dev *);
void pdev_sort_resources(struct pci_dev *, struct resource_list *);
880
int pci_enable_resources(struct pci_dev *, int mask);
L
Linus Torvalds 已提交
881 882 883
void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
		    int (*)(struct pci_dev *, u8, u8));
#define HAVE_PCI_REQ_REGIONS	2
884
int __must_check pci_request_regions(struct pci_dev *, const char *);
885
int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
L
Linus Torvalds 已提交
886
void pci_release_regions(struct pci_dev *);
887
int __must_check pci_request_region(struct pci_dev *, int, const char *);
888
int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
L
Linus Torvalds 已提交
889
void pci_release_region(struct pci_dev *, int);
890
int pci_request_selected_regions(struct pci_dev *, int, const char *);
891
int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
892
void pci_release_selected_regions(struct pci_dev *, int);
L
Linus Torvalds 已提交
893 894

/* drivers/pci/bus.c */
895 896 897 898
void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags);
struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
void pci_bus_remove_resources(struct pci_bus *bus);

899
#define pci_bus_for_each_resource(bus, res, i)				\
900 901 902
	for (i = 0;							\
	    (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \
	     i++)
903

904 905 906 907
int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
			struct resource *res, resource_size_t size,
			resource_size_t align, resource_size_t min,
			unsigned int type_mask,
908 909
			resource_size_t (*alignf)(void *,
						  const struct resource *,
910 911
						  resource_size_t,
						  resource_size_t),
912
			void *alignf_data);
L
Linus Torvalds 已提交
913 914
void pci_enable_bridges(struct pci_bus *bus);

915
/* Proper probing supporting hot-pluggable devices */
916 917
int __must_check __pci_register_driver(struct pci_driver *, struct module *,
				       const char *mod_name);
918 919 920 921 922 923

/*
 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded
 */
#define pci_register_driver(driver)		\
	__pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
924

925 926 927
void pci_unregister_driver(struct pci_driver *dev);
void pci_remove_behind_bridge(struct pci_dev *dev);
struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
T
Tejun Heo 已提交
928 929 930 931 932
int pci_add_dynid(struct pci_driver *drv,
		  unsigned int vendor, unsigned int device,
		  unsigned int subvendor, unsigned int subdevice,
		  unsigned int class, unsigned int class_mask,
		  unsigned long driver_data);
933 934 935 936
const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
					 struct pci_dev *dev);
int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
		    int pass);
L
Linus Torvalds 已提交
937

938
void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
939
		  void *userdata);
940
int pci_cfg_space_size_ext(struct pci_dev *dev);
941
int pci_cfg_space_size(struct pci_dev *dev);
942
unsigned char pci_bus_max_busnr(struct pci_bus *bus);
943

944 945 946
#define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0)
#define PCI_VGA_STATE_CHANGE_DECODES (1 << 1)

947
int pci_set_vga_state(struct pci_dev *pdev, bool decode,
948
		      unsigned int command_bits, u32 flags);
L
Linus Torvalds 已提交
949 950
/* kmem_cache style wrapper around pci_alloc_consistent() */

951
#include <linux/pci-dma.h>
L
Linus Torvalds 已提交
952 953 954 955 956 957 958 959 960
#include <linux/dmapool.h>

#define	pci_pool dma_pool
#define pci_pool_create(name, pdev, size, align, allocation) \
		dma_pool_create(name, &pdev->dev, size, align, allocation)
#define	pci_pool_destroy(pool) dma_pool_destroy(pool)
#define	pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
#define	pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)

961 962 963 964 965 966 967 968 969
enum pci_dma_burst_strategy {
	PCI_DMA_BURST_INFINITY,	/* make bursts as large as possible,
				   strategy_parameter is N/A */
	PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
				   byte boundaries */
	PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
				   strategy_parameter byte boundaries */
};

L
Linus Torvalds 已提交
970
struct msix_entry {
Y
Yinghai Lu 已提交
971
	u32	vector;	/* kernel uses to write allocated vector */
L
Linus Torvalds 已提交
972 973 974
	u16	entry;	/* driver uses to specify entry, OS writes */
};

975

L
Linus Torvalds 已提交
976
#ifndef CONFIG_PCI_MSI
977
static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
978 979 980 981
{
	return -1;
}

982 983
static inline void pci_msi_shutdown(struct pci_dev *dev)
{ }
984 985 986
static inline void pci_disable_msi(struct pci_dev *dev)
{ }

987 988 989 990
static inline int pci_msix_table_size(struct pci_dev *dev)
{
	return 0;
}
991 992 993 994 995 996
static inline int pci_enable_msix(struct pci_dev *dev,
				  struct msix_entry *entries, int nvec)
{
	return -1;
}

997 998
static inline void pci_msix_shutdown(struct pci_dev *dev)
{ }
999 1000 1001 1002 1003 1004 1005 1006
static inline void pci_disable_msix(struct pci_dev *dev)
{ }

static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
{ }

static inline void pci_restore_msi_state(struct pci_dev *dev)
{ }
1007 1008 1009 1010
static inline int pci_msi_enabled(void)
{
	return 0;
}
L
Linus Torvalds 已提交
1011
#else
1012
extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
1013
extern void pci_msi_shutdown(struct pci_dev *dev);
L
Linus Torvalds 已提交
1014
extern void pci_disable_msi(struct pci_dev *dev);
1015
extern int pci_msix_table_size(struct pci_dev *dev);
1016
extern int pci_enable_msix(struct pci_dev *dev,
L
Linus Torvalds 已提交
1017
	struct msix_entry *entries, int nvec);
1018
extern void pci_msix_shutdown(struct pci_dev *dev);
L
Linus Torvalds 已提交
1019 1020
extern void pci_disable_msix(struct pci_dev *dev);
extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
1021
extern void pci_restore_msi_state(struct pci_dev *dev);
1022
extern int pci_msi_enabled(void);
L
Linus Torvalds 已提交
1023 1024
#endif

1025
#ifdef CONFIG_PCIEPORTBUS
1026 1027
extern bool pcie_ports_disabled;
extern bool pcie_ports_auto;
1028 1029 1030 1031
#else
#define pcie_ports_disabled	true
#define pcie_ports_auto		false
#endif
1032

1033
#ifndef CONFIG_PCIEASPM
1034 1035
static inline int pcie_aspm_enabled(void) { return 0; }
static inline bool pcie_aspm_support_enabled(void) { return false; }
1036 1037
#else
extern int pcie_aspm_enabled(void);
1038
extern bool pcie_aspm_support_enabled(void);
1039 1040
#endif

1041 1042 1043 1044 1045 1046 1047 1048
#ifdef CONFIG_PCIEAER
void pci_no_aer(void);
bool pci_aer_available(void);
#else
static inline void pci_no_aer(void) { }
static inline bool pci_aer_available(void) { return false; }
#endif

1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059
#ifndef CONFIG_PCIE_ECRC
static inline void pcie_set_ecrc_checking(struct pci_dev *dev)
{
	return;
}
static inline void pcie_ecrc_get_policy(char *str) {};
#else
extern void pcie_set_ecrc_checking(struct pci_dev *dev);
extern void pcie_ecrc_get_policy(char *str);
#endif

1060 1061
#define pci_enable_msi(pdev)	pci_enable_msi_block(pdev, 1)

1062 1063 1064 1065 1066 1067
#ifdef CONFIG_HT_IRQ
/* The functions a driver should call */
int  ht_create_irq(struct pci_dev *dev, int idx);
void ht_destroy_irq(unsigned int irq);
#endif /* CONFIG_HT_IRQ */

1068 1069 1070
extern void pci_block_user_cfg_access(struct pci_dev *dev);
extern void pci_unblock_user_cfg_access(struct pci_dev *dev);

1071 1072 1073 1074 1075
/*
 * PCI domain support.  Sometimes called PCI segment (eg by ACPI),
 * a PCI domain is defined to be a set of PCI busses which share
 * configuration space.
 */
1076 1077 1078 1079
#ifdef CONFIG_PCI_DOMAINS
extern int pci_domains_supported;
#else
enum { pci_domains_supported = 0 };
1080 1081 1082 1083 1084
static inline int pci_domain_nr(struct pci_bus *bus)
{
	return 0;
}

1085 1086 1087 1088
static inline int pci_proc_domain(struct pci_bus *bus)
{
	return 0;
}
1089
#endif /* CONFIG_PCI_DOMAINS */
L
Linus Torvalds 已提交
1090

1091 1092
/* some architectures require additional setup to direct VGA traffic */
typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
1093
		      unsigned int command_bits, u32 flags);
1094 1095
extern void pci_register_set_vga_state(arch_set_vga_state_t func);

1096
#else /* CONFIG_PCI is not enabled */
L
Linus Torvalds 已提交
1097 1098 1099 1100 1101 1102

/*
 *  If the system does not have PCI, clearly these return errors.  Define
 *  these as simple inline functions to avoid hair in drivers.
 */

1103 1104 1105
#define _PCI_NOP(o, s, t) \
	static inline int pci_##o##_config_##s(struct pci_dev *dev, \
						int where, t val) \
L
Linus Torvalds 已提交
1106
		{ return PCIBIOS_FUNC_NOT_SUPPORTED; }
1107 1108 1109 1110

#define _PCI_NOP_ALL(o, x)	_PCI_NOP(o, byte, u8 x) \
				_PCI_NOP(o, word, u16 x) \
				_PCI_NOP(o, dword, u32 x)
L
Linus Torvalds 已提交
1111 1112 1113
_PCI_NOP_ALL(read, *)
_PCI_NOP_ALL(write,)

1114
static inline struct pci_dev *pci_get_device(unsigned int vendor,
1115 1116 1117 1118 1119
					     unsigned int device,
					     struct pci_dev *from)
{
	return NULL;
}
1120

1121 1122 1123 1124
static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
					     unsigned int device,
					     unsigned int ss_vendor,
					     unsigned int ss_device,
1125
					     struct pci_dev *from)
1126 1127 1128
{
	return NULL;
}
L
Linus Torvalds 已提交
1129

1130 1131 1132 1133 1134
static inline struct pci_dev *pci_get_class(unsigned int class,
					    struct pci_dev *from)
{
	return NULL;
}
L
Linus Torvalds 已提交
1135 1136

#define pci_dev_present(ids)	(0)
Z
Zhang, Yanmin 已提交
1137
#define no_pci_devices()	(1)
L
Linus Torvalds 已提交
1138 1139
#define pci_dev_put(dev)	do { } while (0)

1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155
static inline void pci_set_master(struct pci_dev *dev)
{ }

static inline int pci_enable_device(struct pci_dev *dev)
{
	return -EIO;
}

static inline void pci_disable_device(struct pci_dev *dev)
{ }

static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
{
	return -EIO;
}

1156 1157 1158 1159 1160
static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
	return -EIO;
}

1161 1162 1163 1164 1165 1166
static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
					unsigned int size)
{
	return -EIO;
}

1167 1168 1169 1170 1171 1172
static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
					unsigned long mask)
{
	return -EIO;
}

1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207
static inline int pci_assign_resource(struct pci_dev *dev, int i)
{
	return -EBUSY;
}

static inline int __pci_register_driver(struct pci_driver *drv,
					struct module *owner)
{
	return 0;
}

static inline int pci_register_driver(struct pci_driver *drv)
{
	return 0;
}

static inline void pci_unregister_driver(struct pci_driver *drv)
{ }

static inline int pci_find_capability(struct pci_dev *dev, int cap)
{
	return 0;
}

static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
					   int cap)
{
	return 0;
}

static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
{
	return 0;
}

L
Linus Torvalds 已提交
1208
/* Power management related routines */
1209 1210 1211 1212 1213
static inline int pci_save_state(struct pci_dev *dev)
{
	return 0;
}

1214 1215
static inline void pci_restore_state(struct pci_dev *dev)
{ }
L
Linus Torvalds 已提交
1216

1217 1218 1219 1220 1221
static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
	return 0;
}

1222 1223 1224 1225 1226
static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable)
{
	return 0;
}

1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238
static inline pci_power_t pci_choose_state(struct pci_dev *dev,
					   pm_message_t state)
{
	return PCI_D0;
}

static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
				  int enable)
{
	return 0;
}

1239 1240 1241 1242 1243 1244 1245 1246
static inline void pci_enable_ido(struct pci_dev *dev, unsigned long type)
{
}

static inline void pci_disable_ido(struct pci_dev *dev, unsigned long type)
{
}

1247 1248 1249 1250 1251 1252 1253 1254 1255
static inline int pci_enable_obff(struct pci_dev *dev, unsigned long type)
{
	return 0;
}

static inline void pci_disable_obff(struct pci_dev *dev)
{
}

1256 1257 1258 1259 1260 1261 1262
static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
{
	return -EIO;
}

static inline void pci_release_regions(struct pci_dev *dev)
{ }
1263

1264 1265
#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)

1266 1267 1268 1269 1270
static inline void pci_block_user_cfg_access(struct pci_dev *dev)
{ }

static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
{ }
1271

R
Randy Dunlap 已提交
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282
static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
{ return NULL; }

static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
						unsigned int devfn)
{ return NULL; }

static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
						unsigned int devfn)
{ return NULL; }

1283 1284 1285
static inline int pci_domain_nr(struct pci_bus *bus)
{ return 0; }

1286 1287 1288
#define dev_is_pci(d) (false)
#define dev_is_pf(d) (false)
#define dev_num_vf(d) (0)
1289
#endif /* CONFIG_PCI */
L
Linus Torvalds 已提交
1290

1291 1292 1293
/* Include architecture-dependent settings and functions */

#include <asm/pci.h>
L
Linus Torvalds 已提交
1294

1295 1296 1297 1298
#ifndef PCIBIOS_MAX_MEM_32
#define PCIBIOS_MAX_MEM_32 (-1)
#endif

L
Linus Torvalds 已提交
1299 1300
/* these helpers provide future and backwards compatibility
 * for accessing popular PCI BAR info */
1301 1302 1303
#define pci_resource_start(dev, bar)	((dev)->resource[(bar)].start)
#define pci_resource_end(dev, bar)	((dev)->resource[(bar)].end)
#define pci_resource_flags(dev, bar)	((dev)->resource[(bar)].flags)
L
Linus Torvalds 已提交
1304
#define pci_resource_len(dev,bar) \
1305 1306 1307 1308 1309 1310
	((pci_resource_start((dev), (bar)) == 0 &&	\
	  pci_resource_end((dev), (bar)) ==		\
	  pci_resource_start((dev), (bar))) ? 0 :	\
							\
	 (pci_resource_end((dev), (bar)) -		\
	  pci_resource_start((dev), (bar)) + 1))
L
Linus Torvalds 已提交
1311 1312 1313 1314 1315

/* Similar to the helpers above, these manipulate per-pci_dev
 * driver-specific data.  They are really just a wrapper around
 * the generic device structure functions of these calls.
 */
1316
static inline void *pci_get_drvdata(struct pci_dev *pdev)
L
Linus Torvalds 已提交
1317 1318 1319 1320
{
	return dev_get_drvdata(&pdev->dev);
}

1321
static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
L
Linus Torvalds 已提交
1322 1323 1324 1325 1326 1327 1328
{
	dev_set_drvdata(&pdev->dev, data);
}

/* If you want to know what to call your pci_dev, ask this function.
 * Again, it's a wrapper around the generic device.
 */
1329
static inline const char *pci_name(const struct pci_dev *pdev)
L
Linus Torvalds 已提交
1330
{
G
Greg KH 已提交
1331
	return dev_name(&pdev->dev);
L
Linus Torvalds 已提交
1332 1333
}

1334 1335 1336 1337 1338 1339

/* Some archs don't want to expose struct resource to userland as-is
 * in sysfs and /proc
 */
#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
1340
		const struct resource *rsrc, resource_size_t *start,
1341
		resource_size_t *end)
1342 1343 1344 1345 1346 1347 1348
{
	*start = rsrc->start;
	*end = rsrc->end;
}
#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */


L
Linus Torvalds 已提交
1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
/*
 *  The world is not perfect and supplies us with broken PCI devices.
 *  For at least a part of these bugs we need a work-around, so both
 *  generic (drivers/pci/quirks.c) and per-architecture code can define
 *  fixup hooks to be called for particular buggy devices.
 */

struct pci_fixup {
	u16 vendor, device;	/* You can use PCI_ANY_ID here of course */
	void (*hook)(struct pci_dev *dev);
};

enum pci_fixup_pass {
	pci_fixup_early,	/* Before probing BARs */
	pci_fixup_header,	/* After reading configuration header */
	pci_fixup_final,	/* Final phase of device fixups */
	pci_fixup_enable,	/* pci_enable_device() time */
1366 1367 1368
	pci_fixup_resume,	/* pci_device_resume() */
	pci_fixup_suspend,	/* pci_device_suspend */
	pci_fixup_resume_early, /* pci_device_resume_early() */
L
Linus Torvalds 已提交
1369 1370 1371 1372
};

/* Anonymous variables would be nice... */
#define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook)	\
A
Adrian Bunk 已提交
1373
	static const struct pci_fixup __pci_fixup_##name __used		\
L
Linus Torvalds 已提交
1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386
	__attribute__((__section__(#section))) = { vendor, device, hook };
#define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early,			\
			vendor##device##hook, vendor, device, hook)
#define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header,			\
			vendor##device##hook, vendor, device, hook)
#define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final,			\
			vendor##device##hook, vendor, device, hook)
#define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable,			\
			vendor##device##hook, vendor, device, hook)
1387 1388 1389
#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume,			\
			resume##vendor##device##hook, vendor, device, hook)
1390 1391 1392 1393 1394 1395
#define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook)		\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early,		\
			resume_early##vendor##device##hook, vendor, device, hook)
#define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend,			\
			suspend##vendor##device##hook, vendor, device, hook)
L
Linus Torvalds 已提交
1396

1397
#ifdef CONFIG_PCI_QUIRKS
L
Linus Torvalds 已提交
1398
void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1399 1400 1401 1402
#else
static inline void pci_fixup_device(enum pci_fixup_pass pass,
				    struct pci_dev *dev) {}
#endif
L
Linus Torvalds 已提交
1403

1404
void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
A
Al Viro 已提交
1405
void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1406
void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
A
Al Viro 已提交
1407
int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
1408 1409
int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
				   const char *name);
1410
void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
A
Al Viro 已提交
1411

L
Linus Torvalds 已提交
1412
extern int pci_pci_problems;
A
Alan Cox 已提交
1413
#define PCIPCI_FAIL		1	/* No PCI PCI DMA */
L
Linus Torvalds 已提交
1414 1415 1416 1417
#define PCIPCI_TRITON		2
#define PCIPCI_NATOMA		4
#define PCIPCI_VIAETBF		8
#define PCIPCI_VSFX		16
A
Alan Cox 已提交
1418 1419
#define PCIPCI_ALIMAGIK		32	/* Need low latency setting */
#define PCIAGP_FAIL		64	/* No PCI to AGP DMA */
L
Linus Torvalds 已提交
1420

1421 1422
extern unsigned long pci_cardbus_io_size;
extern unsigned long pci_cardbus_mem_size;
1423
extern u8 __devinitdata pci_dfl_cache_line_size;
1424
extern u8 pci_cache_line_size;
1425

1426 1427 1428
extern unsigned long pci_hotplug_io_size;
extern unsigned long pci_hotplug_mem_size;

1429 1430 1431 1432
int pcibios_add_platform_entries(struct pci_dev *dev);
void pcibios_disable_device(struct pci_dev *dev);
int pcibios_set_pcie_reset_state(struct pci_dev *dev,
				 enum pcie_reset_state state);
1433

1434
#ifdef CONFIG_PCI_MMCONFIG
1435
extern void __init pci_mmcfg_early_init(void);
1436 1437
extern void __init pci_mmcfg_late_init(void);
#else
1438
static inline void pci_mmcfg_early_init(void) { }
1439 1440 1441
static inline void pci_mmcfg_late_init(void) { }
#endif

1442 1443
int pci_ext_cfg_avail(struct pci_dev *dev);

A
Andrew Morton 已提交
1444
void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1445

1446 1447 1448
#ifdef CONFIG_PCI_IOV
extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
extern void pci_disable_sriov(struct pci_dev *dev);
1449
extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
1450
extern int pci_num_vf(struct pci_dev *dev);
1451 1452 1453 1454 1455 1456 1457 1458
#else
static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
{
	return -ENODEV;
}
static inline void pci_disable_sriov(struct pci_dev *dev)
{
}
1459 1460 1461 1462
static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
{
	return IRQ_NONE;
}
1463 1464 1465 1466
static inline int pci_num_vf(struct pci_dev *dev)
{
	return 0;
}
1467 1468
#endif

1469 1470 1471 1472 1473
#if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)
extern void pci_hp_create_module_link(struct pci_slot *pci_slot);
extern void pci_hp_remove_module_link(struct pci_slot *pci_slot);
#endif

K
Kenji Kaneshige 已提交
1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
/**
 * pci_pcie_cap - get the saved PCIe capability offset
 * @dev: PCI device
 *
 * PCIe capability offset is calculated at PCI device initialization
 * time and saved in the data structure. This function returns saved
 * PCIe capability offset. Using this instead of pci_find_capability()
 * reduces unnecessary search in the PCI configuration space. If you
 * need to calculate PCIe capability offset from raw device for some
 * reasons, please use pci_find_capability() instead.
 */
static inline int pci_pcie_cap(struct pci_dev *dev)
{
	return dev->pcie_cap;
}

K
Kenji Kaneshige 已提交
1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500
/**
 * pci_is_pcie - check if the PCI device is PCI Express capable
 * @dev: PCI device
 *
 * Retrun true if the PCI device is PCI Express capable, false otherwise.
 */
static inline bool pci_is_pcie(struct pci_dev *dev)
{
	return !!pci_pcie_cap(dev);
}

C
Chris Wright 已提交
1501 1502
void pci_request_acs(void);

1503

1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525
#define PCI_VPD_LRDT			0x80	/* Large Resource Data Type */
#define PCI_VPD_LRDT_ID(x)		(x | PCI_VPD_LRDT)

/* Large Resource Data Type Tag Item Names */
#define PCI_VPD_LTIN_ID_STRING		0x02	/* Identifier String */
#define PCI_VPD_LTIN_RO_DATA		0x10	/* Read-Only Data */
#define PCI_VPD_LTIN_RW_DATA		0x11	/* Read-Write Data */

#define PCI_VPD_LRDT_ID_STRING		PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING)
#define PCI_VPD_LRDT_RO_DATA		PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA)
#define PCI_VPD_LRDT_RW_DATA		PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)

/* Small Resource Data Type Tag Item Names */
#define PCI_VPD_STIN_END		0x78	/* End */

#define PCI_VPD_SRDT_END		PCI_VPD_STIN_END

#define PCI_VPD_SRDT_TIN_MASK		0x78
#define PCI_VPD_SRDT_LEN_MASK		0x07

#define PCI_VPD_LRDT_TAG_SIZE		3
#define PCI_VPD_SRDT_TAG_SIZE		1
1526

1527 1528
#define PCI_VPD_INFO_FLD_HDR_SIZE	3

1529 1530 1531
#define PCI_VPD_RO_KEYWORD_PARTNO	"PN"
#define PCI_VPD_RO_KEYWORD_MFR_ID	"MN"
#define PCI_VPD_RO_KEYWORD_VENDOR0	"V0"
1532
#define PCI_VPD_RO_KEYWORD_CHKSUM	"RV"
1533

1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544
/**
 * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
 *
 * Returns the extracted Large Resource Data Type length.
 */
static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
{
	return (u16)lrdt[1] + ((u16)lrdt[2] << 8);
}

1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555
/**
 * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
 * @lrdt: Pointer to the beginning of the Small Resource Data Type tag
 *
 * Returns the extracted Small Resource Data Type length.
 */
static inline u8 pci_vpd_srdt_size(const u8 *srdt)
{
	return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
}

1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566
/**
 * pci_vpd_info_field_size - Extracts the information field length
 * @lrdt: Pointer to the beginning of an information field header
 *
 * Returns the extracted information field length.
 */
static inline u8 pci_vpd_info_field_size(const u8 *info_field)
{
	return info_field[2];
}

1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578
/**
 * pci_vpd_find_tag - Locates the Resource Data Type tag provided
 * @buf: Pointer to buffered vpd data
 * @off: The offset into the buffer at which to begin the search
 * @len: The length of the vpd buffer
 * @rdt: The Resource Data Type to search for
 *
 * Returns the index where the Resource Data Type was found or
 * -ENOENT otherwise.
 */
int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt);

1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591
/**
 * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
 * @buf: Pointer to buffered vpd data
 * @off: The offset into the buffer at which to begin the search
 * @len: The length of the buffer area, relative to off, in which to search
 * @kw: The keyword to search for
 *
 * Returns the index where the information field keyword was found or
 * -ENOENT otherwise.
 */
int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
			      unsigned int len, const char *kw);

1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609
/* PCI <-> OF binding helpers */
#ifdef CONFIG_OF
struct device_node;
extern void pci_set_of_node(struct pci_dev *dev);
extern void pci_release_of_node(struct pci_dev *dev);
extern void pci_set_bus_of_node(struct pci_bus *bus);
extern void pci_release_bus_of_node(struct pci_bus *bus);

/* Arch may override this (weak) */
extern struct device_node * __weak pcibios_get_phb_of_node(struct pci_bus *bus);

#else /* CONFIG_OF */
static inline void pci_set_of_node(struct pci_dev *dev) { }
static inline void pci_release_of_node(struct pci_dev *dev) { }
static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
#endif  /* CONFIG_OF */

L
Linus Torvalds 已提交
1610 1611
#endif /* __KERNEL__ */
#endif /* LINUX_PCI_H */