pci.h 40.9 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

127 128 129 130
#define PCI_PM_D2_DELAY	200
#define PCI_PM_D3_WAIT	10
#define PCI_PM_BUS_WAIT	50

131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147
/** 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
148 149 150 151 152 153 154 155 156 157 158 159 160
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
};

161 162 163 164 165 166
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,
167 168
	/* Device configuration is irrevocably lost if disabled into D3 */
	PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
169 170
};

171 172 173 174 175
enum pci_irq_reroute_variant {
	INTEL_IRQ_REROUTE_VARIANT = 1,
	MAX_IRQ_REROUTE_VARIANTS = 3
};

176 177
typedef unsigned short __bitwise pci_bus_flags_t;
enum pci_bus_flags {
178 179
	PCI_BUS_FLAGS_NO_MSI   = (__force pci_bus_flags_t) 1,
	PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
180 181
};

182 183 184 185 186 187
struct pci_cap_saved_state {
	struct hlist_node next;
	char cap_nr;
	u32 data[0];
};

S
Shaohua Li 已提交
188
struct pcie_link_state;
189
struct pci_vpd;
190
struct pci_sriov;
191

L
Linus Torvalds 已提交
192 193 194 195 196 197 198 199 200 201
/*
 * 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
202
	struct pci_slot	*slot;		/* Physical slot this device is in */
L
Linus Torvalds 已提交
203 204 205 206 207 208 209

	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
210
	u8		revision;	/* PCI revision, low byte of class word */
L
Linus Torvalds 已提交
211
	u8		hdr_type;	/* PCI header type (`multi' flag masked out) */
212
	u8		pcie_type;	/* PCI-E device/port type */
L
Linus Torvalds 已提交
213
	u8		rom_base_reg;	/* which config register controls the ROM */
214
	u8		pin;  		/* which interrupt pin this device uses */
L
Linus Torvalds 已提交
215 216 217 218 219 220 221 222

	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.  */

223 224
	struct device_dma_parameters dma_parms;

L
Linus Torvalds 已提交
225 226 227
	pci_power_t     current_state;  /* Current operating state. In ACPI-speak,
					   this is D0-D3, D0 being fully functional,
					   and D3 being off. */
228 229 230 231 232 233 234
	int		pm_cap;		/* PM capability offset in the
					   configuration space */
	unsigned int	pme_support:5;	/* Bitmask of states from which PME#
					   can be generated */
	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 */
L
Linus Torvalds 已提交
235

S
Shaohua Li 已提交
236 237 238 239
#ifdef CONFIG_PCIEASPM
	struct pcie_link_state	*link_state;	/* ASPM link state. */
#endif

240
	pci_channel_state_t error_state;	/* current connectivity state */
L
Linus Torvalds 已提交
241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
	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 */

	/* 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 */
256
	unsigned int	is_added:1;
L
Linus Torvalds 已提交
257
	unsigned int	is_busmaster:1; /* device is busmaster */
258
	unsigned int	no_msi:1;	/* device may not use msi */
259
	unsigned int	block_ucfg_access:1;	/* userspace config space access is blocked */
260
	unsigned int	broken_parity_status:1;	/* Device generates false positive parity */
261
	unsigned int	irq_reroute_variant:2;	/* device needs IRQ rerouting variant */
262 263
	unsigned int 	msi_enabled:1;
	unsigned int	msix_enabled:1;
Y
Yu Zhao 已提交
264
	unsigned int	ari_enabled:1;	/* ARI forwarding */
T
Tejun Heo 已提交
265
	unsigned int	is_managed:1;
266
	unsigned int	is_pcie:1;
267
	unsigned int	state_saved:1;
268
	unsigned int	is_physfn:1;
269
	unsigned int	is_virtfn:1;
270
	pci_dev_flags_t dev_flags;
271
	atomic_t	enable_cnt;	/* pci_enable_device has been called */
272

L
Linus Torvalds 已提交
273
	u32		saved_config_space[16]; /* config space saved at suspend time */
274
	struct hlist_head saved_cap_space;
L
Linus Torvalds 已提交
275 276 277
	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 */
278
	struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
E
Eric W. Biederman 已提交
279
#ifdef CONFIG_PCI_MSI
280
	struct list_head msi_list;
E
Eric W. Biederman 已提交
281
#endif
282
	struct pci_vpd *vpd;
283
#ifdef CONFIG_PCI_IOV
284 285 286 287
	union {
		struct pci_sriov *sriov;	/* SR-IOV capability related */
		struct pci_dev *physfn;	/* the PF this VF is associated with */
	};
288
#endif
L
Linus Torvalds 已提交
289 290
};

291 292
extern struct pci_dev *alloc_pci_dev(void);

L
Linus Torvalds 已提交
293 294 295 296
#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)

297 298 299 300 301
static inline int pci_channel_offline(struct pci_dev *pdev)
{
	return (pdev->error_state != pci_channel_io_normal);
}

302
static inline struct pci_cap_saved_state *pci_find_saved_cap(
303
	struct pci_dev *pci_dev, char cap)
304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
{
	struct pci_cap_saved_state *tmp;
	struct hlist_node *pos;

	hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
		if (tmp->cap_nr == cap)
			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);
}

L
Linus Torvalds 已提交
321
#ifndef PCI_BUS_NUM_RESOURCES
322
#define PCI_BUS_NUM_RESOURCES	16
L
Linus Torvalds 已提交
323
#endif
324 325

#define PCI_REGION_FLAG_MASK	0x0fU	/* These bits of resource flags tell us the PCI region flags */
L
Linus Torvalds 已提交
326 327 328 329 330 331 332

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
333
	struct list_head slots;		/* list of slots on this bus */
L
Linus Torvalds 已提交
334 335 336 337 338 339 340 341 342 343 344 345 346 347 348
	struct resource	*resource[PCI_BUS_NUM_RESOURCES];
					/* address space routed to this bus */

	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 */

	char		name[48];

	unsigned short  bridge_ctl;	/* manage NO_ISA/FBB/et al behaviors */
349
	pci_bus_flags_t bus_flags;	/* Inherited by child busses */
L
Linus Torvalds 已提交
350
	struct device		*bridge;
351
	struct device		dev;
L
Linus Torvalds 已提交
352 353
	struct bin_attribute	*legacy_io; /* legacy I/O for this bus */
	struct bin_attribute	*legacy_mem; /* legacy mem */
354
	unsigned int		is_added:1;
L
Linus Torvalds 已提交
355 356 357
};

#define pci_bus_b(n)	list_entry(n, struct pci_bus, node)
358
#define to_pci_bus(n)	container_of(n, struct pci_bus, dev)
L
Linus Torvalds 已提交
359

K
Kenji Kaneshige 已提交
360 361 362 363 364 365 366 367 368
/*
 * 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);
}

369 370 371 372 373 374 375 376 377
#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
378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395
/*
 * 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);
};

396 397 398 399 400 401 402 403
/*
 * 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
404 405

struct pci_bus_region {
406 407
	resource_size_t start;
	resource_size_t end;
L
Linus Torvalds 已提交
408 409 410 411 412 413 414
};

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

415 416
/* ---------------------------------------------------------------- */
/** PCI Error Recovery System (PCI-ERS).  If a PCI device driver provides
417
 *  a set of callbacks in struct pci_error_handlers, then that device driver
418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441
 *  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 */
442
struct pci_error_handlers {
443 444
	/* PCI bus error detected on this device */
	pci_ers_result_t (*error_detected)(struct pci_dev *dev,
445
					   enum pci_channel_state error);
446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461

	/* 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
462 463 464 465 466 467 468 469
struct module;
struct pci_driver {
	struct list_head node;
	char *name;
	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
470 471
	int  (*suspend_late) (struct pci_dev *dev, pm_message_t state);
	int  (*resume_early) (struct pci_dev *dev);
L
Linus Torvalds 已提交
472
	int  (*resume) (struct pci_dev *dev);	                /* Device woken up */
G
Greg KH 已提交
473
	void (*shutdown) (struct pci_dev *dev);
474
	struct pci_error_handlers *err_handler;
L
Linus Torvalds 已提交
475 476 477 478
	struct device_driver	driver;
	struct pci_dynids dynids;
};

479
#define	to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
L
Linus Torvalds 已提交
480

481
/**
482
 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
483 484 485 486 487
 * @_table: device table name
 *
 * This macro is used to create a struct pci_device_id array (a device table)
 * in a generic manner.
 */
488
#define DEFINE_PCI_DEVICE_TABLE(_table) \
489 490
	const struct pci_device_id _table[] __devinitconst

L
Linus Torvalds 已提交
491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509
/**
 * 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
510
 * specific PCI class.  The vendor, device, subvendor, and subdevice
L
Linus Torvalds 已提交
511 512 513 514 515 516 517
 * 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

518 519
/**
 * PCI_VDEVICE - macro used to describe a specific pci device in short form
520 521
 * @vendor: the vendor name
 * @device: the 16 bit PCI Device ID
522 523 524 525 526 527 528 529 530 531 532
 *
 * 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
533 534 535 536 537 538 539 540
/* 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
541 542
/* Some device drivers need know if pci is initiated */
extern int no_pci_devices(void);
L
Linus Torvalds 已提交
543 544

void pcibios_fixup_bus(struct pci_bus *);
545
int __must_check pcibios_enable_device(struct pci_dev *, int mask);
546
char *pcibios_setup(char *str);
L
Linus Torvalds 已提交
547 548

/* Used only when drivers/pci/setup.c is used */
549 550
void pcibios_align_resource(void *, struct resource *, resource_size_t,
				resource_size_t);
L
Linus Torvalds 已提交
551 552 553 554 555
void pcibios_update_irq(struct pci_dev *, int irq);

/* Generic PCI functions used internally */

extern struct pci_bus *pci_find_bus(int domain, int busnr);
556
void pci_bus_add_devices(const struct pci_bus *bus);
557 558
struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
				      struct pci_ops *ops, void *sysdata);
559
static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
560
					   void *sysdata)
L
Linus Torvalds 已提交
561
{
562 563 564 565 566
	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
567
}
568 569 570 571
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);
A
Alex Chiang 已提交
572
struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
573 574
				 const char *name,
				 struct hotplug_slot *hotplug);
A
Alex Chiang 已提交
575
void pci_destroy_slot(struct pci_slot *slot);
576
void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
L
Linus Torvalds 已提交
577
int pci_scan_slot(struct pci_bus *bus, int devfn);
578
struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
579
void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
L
Linus Torvalds 已提交
580
unsigned int pci_scan_child_bus(struct pci_bus *bus);
581
int __must_check pci_bus_add_device(struct pci_dev *dev);
L
Linus Torvalds 已提交
582
void pci_read_bridge_bases(struct pci_bus *child);
583 584
struct resource *pci_find_parent_resource(const struct pci_dev *dev,
					  struct resource *res);
585
u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
L
Linus Torvalds 已提交
586
int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
587
u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
L
Linus Torvalds 已提交
588 589 590 591
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
592
extern void pci_stop_bus_device(struct pci_dev *dev);
593
void pci_setup_cardbus(struct pci_bus *bus);
594
extern void pci_sort_breadthfirst(void);
L
Linus Torvalds 已提交
595 596 597

/* Generic PCI functions exported to card drivers */

598
#ifdef CONFIG_PCI_LEGACY
599 600
struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
					     unsigned int device,
601
					     struct pci_dev *from);
602 603
#endif /* CONFIG_PCI_LEGACY */

604 605 606 607 608 609 610
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);
611 612 613 614 615
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);
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
616
struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
L
Linus Torvalds 已提交
617

618 619
struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
				struct pci_dev *from);
620
struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
L
Linus Torvalds 已提交
621
				unsigned int ss_vendor, unsigned int ss_device,
622
				struct pci_dev *from);
623 624 625
struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
L
Linus Torvalds 已提交
626 627
int pci_dev_present(const struct pci_device_id *ids);

628 629 630 631 632 633 634 635 636 637 638 639
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
640
struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);
L
Linus Torvalds 已提交
641 642 643

static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
{
644
	return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
645 646 647
}
static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
{
648
	return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
649
}
650 651
static inline int pci_read_config_dword(struct pci_dev *dev, int where,
					u32 *val)
L
Linus Torvalds 已提交
652
{
653
	return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
654 655 656
}
static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
{
657
	return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
658 659 660
}
static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
{
661
	return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
662
}
663 664
static inline int pci_write_config_dword(struct pci_dev *dev, int where,
					 u32 val)
L
Linus Torvalds 已提交
665
{
666
	return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
L
Linus Torvalds 已提交
667 668
}

669
int __must_check pci_enable_device(struct pci_dev *dev);
670 671
int __must_check pci_enable_device_io(struct pci_dev *dev);
int __must_check pci_enable_device_mem(struct pci_dev *dev);
672
int __must_check pci_reenable_device(struct pci_dev *);
T
Tejun Heo 已提交
673 674 675
int __must_check pcim_enable_device(struct pci_dev *pdev);
void pcim_pin_device(struct pci_dev *pdev);

676 677 678 679 680
static inline int pci_is_enabled(struct pci_dev *pdev)
{
	return (atomic_read(&pdev->enable_cnt) > 0);
}

T
Tejun Heo 已提交
681 682 683 684 685
static inline int pci_is_managed(struct pci_dev *pdev)
{
	return pdev->is_managed;
}

L
Linus Torvalds 已提交
686 687
void pci_disable_device(struct pci_dev *dev);
void pci_set_master(struct pci_dev *dev);
688
void pci_clear_master(struct pci_dev *dev);
B
Brian King 已提交
689
int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
L
Linus Torvalds 已提交
690
#define HAVE_PCI_SET_MWI
691
int __must_check pci_set_mwi(struct pci_dev *dev);
R
Randy Dunlap 已提交
692
int pci_try_set_mwi(struct pci_dev *dev);
L
Linus Torvalds 已提交
693
void pci_clear_mwi(struct pci_dev *dev);
B
Brett M Russ 已提交
694
void pci_intx(struct pci_dev *dev, int enable);
695
void pci_msi_off(struct pci_dev *dev);
696 697
int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
698
int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
699
int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
700 701 702
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);
703
int pcie_get_readrq(struct pci_dev *dev);
704
int pcie_set_readrq(struct pci_dev *dev, int rq);
Y
Yu Zhao 已提交
705
int __pci_reset_function(struct pci_dev *dev);
706
int pci_reset_function(struct pci_dev *dev);
707
void pci_update_resource(struct pci_dev *dev, int resno);
708
int __must_check pci_assign_resource(struct pci_dev *dev, int i);
709
int pci_select_bars(struct pci_dev *dev, unsigned long flags);
L
Linus Torvalds 已提交
710 711

/* ROM control related routines */
A
Alan Cox 已提交
712 713
int pci_enable_rom(struct pci_dev *pdev);
void pci_disable_rom(struct pci_dev *pdev);
714
void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
L
Linus Torvalds 已提交
715
void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
716
size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
L
Linus Torvalds 已提交
717 718 719 720

/* Power management related routines */
int pci_save_state(struct pci_dev *dev);
int pci_restore_state(struct pci_dev *dev);
721
int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
722 723
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);
724
bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
725
void pci_pme_active(struct pci_dev *dev, bool enable);
726
int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
727
int pci_wake_from_d3(struct pci_dev *dev, bool enable);
728
pci_power_t pci_target_state(struct pci_dev *dev);
729 730
int pci_prepare_to_sleep(struct pci_dev *dev);
int pci_back_from_sleep(struct pci_dev *dev);
L
Linus Torvalds 已提交
731

732
/* Functions for PCI Hotplug drivers to use */
733
int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
A
Alex Chiang 已提交
734 735 736
#ifdef CONFIG_HOTPLUG
unsigned int pci_rescan_bus(struct pci_bus *bus);
#endif
737

738 739 740
/* 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);
741
int pci_vpd_truncate(struct pci_dev *dev, size_t size);
742

L
Linus Torvalds 已提交
743
/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
744
void pci_bus_assign_resources(const struct pci_bus *bus);
L
Linus Torvalds 已提交
745 746 747 748 749
void pci_bus_size_bridges(struct pci_bus *bus);
int pci_claim_resource(struct pci_dev *, int);
void pci_assign_unassigned_resources(void);
void pdev_enable_device(struct pci_dev *);
void pdev_sort_resources(struct pci_dev *, struct resource_list *);
750
int pci_enable_resources(struct pci_dev *, int mask);
L
Linus Torvalds 已提交
751 752 753
void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
		    int (*)(struct pci_dev *, u8, u8));
#define HAVE_PCI_REQ_REGIONS	2
754
int __must_check pci_request_regions(struct pci_dev *, const char *);
755
int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
L
Linus Torvalds 已提交
756
void pci_release_regions(struct pci_dev *);
757
int __must_check pci_request_region(struct pci_dev *, int, const char *);
758
int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
L
Linus Torvalds 已提交
759
void pci_release_region(struct pci_dev *, int);
760
int pci_request_selected_regions(struct pci_dev *, int, const char *);
761
int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
762
void pci_release_selected_regions(struct pci_dev *, int);
L
Linus Torvalds 已提交
763 764

/* drivers/pci/bus.c */
765 766 767 768 769 770 771
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,
			void (*alignf)(void *, struct resource *,
				resource_size_t, resource_size_t),
			void *alignf_data);
L
Linus Torvalds 已提交
772 773
void pci_enable_bridges(struct pci_bus *bus);

774
/* Proper probing supporting hot-pluggable devices */
775 776
int __must_check __pci_register_driver(struct pci_driver *, struct module *,
				       const char *mod_name);
777 778 779 780 781 782

/*
 * 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)
783

784 785 786 787 788 789 790
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);
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
791

792
void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
793
		  void *userdata);
794
int pci_cfg_space_size_ext(struct pci_dev *dev);
795
int pci_cfg_space_size(struct pci_dev *dev);
796
unsigned char pci_bus_max_busnr(struct pci_bus *bus);
797

L
Linus Torvalds 已提交
798 799 800 801 802 803 804 805 806 807 808
/* kmem_cache style wrapper around pci_alloc_consistent() */

#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)

809 810 811 812 813 814 815 816 817
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
818
struct msix_entry {
Y
Yinghai Lu 已提交
819
	u32	vector;	/* kernel uses to write allocated vector */
L
Linus Torvalds 已提交
820 821 822
	u16	entry;	/* driver uses to specify entry, OS writes */
};

823

L
Linus Torvalds 已提交
824
#ifndef CONFIG_PCI_MSI
825
static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
826 827 828 829
{
	return -1;
}

830 831
static inline void pci_msi_shutdown(struct pci_dev *dev)
{ }
832 833 834
static inline void pci_disable_msi(struct pci_dev *dev)
{ }

835 836 837 838
static inline int pci_msix_table_size(struct pci_dev *dev)
{
	return 0;
}
839 840 841 842 843 844
static inline int pci_enable_msix(struct pci_dev *dev,
				  struct msix_entry *entries, int nvec)
{
	return -1;
}

845 846
static inline void pci_msix_shutdown(struct pci_dev *dev)
{ }
847 848 849 850 851 852 853 854
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)
{ }
855 856 857 858
static inline int pci_msi_enabled(void)
{
	return 0;
}
L
Linus Torvalds 已提交
859
#else
860
extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
861
extern void pci_msi_shutdown(struct pci_dev *dev);
L
Linus Torvalds 已提交
862
extern void pci_disable_msi(struct pci_dev *dev);
863
extern int pci_msix_table_size(struct pci_dev *dev);
864
extern int pci_enable_msix(struct pci_dev *dev,
L
Linus Torvalds 已提交
865
	struct msix_entry *entries, int nvec);
866
extern void pci_msix_shutdown(struct pci_dev *dev);
L
Linus Torvalds 已提交
867 868
extern void pci_disable_msix(struct pci_dev *dev);
extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
869
extern void pci_restore_msi_state(struct pci_dev *dev);
870
extern int pci_msi_enabled(void);
L
Linus Torvalds 已提交
871 872
#endif

873 874 875 876 877 878 879 880 881
#ifndef CONFIG_PCIEASPM
static inline int pcie_aspm_enabled(void)
{
	return 0;
}
#else
extern int pcie_aspm_enabled(void);
#endif

882 883 884 885 886 887 888 889 890 891 892
#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

893 894
#define pci_enable_msi(pdev)	pci_enable_msi_block(pdev, 1)

895 896 897 898 899 900
#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 */

901 902 903
extern void pci_block_user_cfg_access(struct pci_dev *dev);
extern void pci_unblock_user_cfg_access(struct pci_dev *dev);

904 905 906 907 908
/*
 * 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.
 */
909 910 911 912
#ifdef CONFIG_PCI_DOMAINS
extern int pci_domains_supported;
#else
enum { pci_domains_supported = 0 };
913 914 915 916 917
static inline int pci_domain_nr(struct pci_bus *bus)
{
	return 0;
}

918 919 920 921
static inline int pci_proc_domain(struct pci_bus *bus)
{
	return 0;
}
922
#endif /* CONFIG_PCI_DOMAINS */
L
Linus Torvalds 已提交
923

924
#else /* CONFIG_PCI is not enabled */
L
Linus Torvalds 已提交
925 926 927 928 929 930

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

931 932 933
#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
934
		{ return PCIBIOS_FUNC_NOT_SUPPORTED; }
935 936 937 938

#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
939 940 941
_PCI_NOP_ALL(read, *)
_PCI_NOP_ALL(write,)

942 943
static inline struct pci_dev *pci_find_device(unsigned int vendor,
					      unsigned int device,
944
					      struct pci_dev *from)
945 946 947
{
	return NULL;
}
L
Linus Torvalds 已提交
948

949
static inline struct pci_dev *pci_get_device(unsigned int vendor,
950 951 952 953 954
					     unsigned int device,
					     struct pci_dev *from)
{
	return NULL;
}
955

956 957 958 959
static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
					     unsigned int device,
					     unsigned int ss_vendor,
					     unsigned int ss_device,
960
					     struct pci_dev *from)
961 962 963
{
	return NULL;
}
L
Linus Torvalds 已提交
964

965 966 967 968 969
static inline struct pci_dev *pci_get_class(unsigned int class,
					    struct pci_dev *from)
{
	return NULL;
}
L
Linus Torvalds 已提交
970 971

#define pci_dev_present(ids)	(0)
Z
Zhang, Yanmin 已提交
972
#define no_pci_devices()	(1)
L
Linus Torvalds 已提交
973 974
#define pci_dev_put(dev)	do { } while (0)

975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
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;
}

991 992 993 994 995
static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
{
	return -EIO;
}

996 997 998 999 1000 1001
static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
					unsigned int size)
{
	return -EIO;
}

1002 1003 1004 1005 1006 1007
static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
					unsigned long mask)
{
	return -EIO;
}

1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
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
1043
/* Power management related routines */
1044 1045 1046 1047 1048 1049 1050 1051 1052
static inline int pci_save_state(struct pci_dev *dev)
{
	return 0;
}

static inline int pci_restore_state(struct pci_dev *dev)
{
	return 0;
}
L
Linus Torvalds 已提交
1053

1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077
static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
	return 0;
}

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;
}

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)
{ }
1078

1079 1080
#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)

1081 1082 1083 1084 1085
static inline void pci_block_user_cfg_access(struct pci_dev *dev)
{ }

static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
{ }
1086

R
Randy Dunlap 已提交
1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
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; }

1098
#endif /* CONFIG_PCI */
L
Linus Torvalds 已提交
1099

1100 1101 1102
/* Include architecture-dependent settings and functions */

#include <asm/pci.h>
L
Linus Torvalds 已提交
1103

1104 1105 1106 1107
#ifndef PCIBIOS_MAX_MEM_32
#define PCIBIOS_MAX_MEM_32 (-1)
#endif

L
Linus Torvalds 已提交
1108 1109
/* these helpers provide future and backwards compatibility
 * for accessing popular PCI BAR info */
1110 1111 1112
#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
1113
#define pci_resource_len(dev,bar) \
1114 1115 1116 1117 1118 1119
	((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
1120 1121 1122 1123 1124

/* 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.
 */
1125
static inline void *pci_get_drvdata(struct pci_dev *pdev)
L
Linus Torvalds 已提交
1126 1127 1128 1129
{
	return dev_get_drvdata(&pdev->dev);
}

1130
static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
L
Linus Torvalds 已提交
1131 1132 1133 1134 1135 1136 1137
{
	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.
 */
G
Greg KH 已提交
1138
static inline const char *pci_name(struct pci_dev *pdev)
L
Linus Torvalds 已提交
1139
{
G
Greg KH 已提交
1140
	return dev_name(&pdev->dev);
L
Linus Torvalds 已提交
1141 1142
}

1143 1144 1145 1146 1147 1148

/* 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,
1149
		const struct resource *rsrc, resource_size_t *start,
1150
		resource_size_t *end)
1151 1152 1153 1154 1155 1156 1157
{
	*start = rsrc->start;
	*end = rsrc->end;
}
#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */


L
Linus Torvalds 已提交
1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
/*
 *  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 */
1175 1176 1177
	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
1178 1179 1180 1181
};

/* Anonymous variables would be nice... */
#define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook)	\
A
Adrian Bunk 已提交
1182
	static const struct pci_fixup __pci_fixup_##name __used		\
L
Linus Torvalds 已提交
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195
	__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)
1196 1197 1198
#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook)			\
	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume,			\
			resume##vendor##device##hook, vendor, device, hook)
1199 1200 1201 1202 1203 1204
#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
1205 1206 1207 1208


void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);

1209
void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
A
Al Viro 已提交
1210
void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1211
void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
A
Al Viro 已提交
1212
int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
1213 1214
int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
				   const char *name);
1215
void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
A
Al Viro 已提交
1216

L
Linus Torvalds 已提交
1217
extern int pci_pci_problems;
A
Alan Cox 已提交
1218
#define PCIPCI_FAIL		1	/* No PCI PCI DMA */
L
Linus Torvalds 已提交
1219 1220 1221 1222
#define PCIPCI_TRITON		2
#define PCIPCI_NATOMA		4
#define PCIPCI_VIAETBF		8
#define PCIPCI_VSFX		16
A
Alan Cox 已提交
1223 1224
#define PCIPCI_ALIMAGIK		32	/* Need low latency setting */
#define PCIAGP_FAIL		64	/* No PCI to AGP DMA */
L
Linus Torvalds 已提交
1225

1226 1227 1228
extern unsigned long pci_cardbus_io_size;
extern unsigned long pci_cardbus_mem_size;

1229 1230 1231 1232
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);
1233

1234
#ifdef CONFIG_PCI_MMCONFIG
1235
extern void __init pci_mmcfg_early_init(void);
1236 1237
extern void __init pci_mmcfg_late_init(void);
#else
1238
static inline void pci_mmcfg_early_init(void) { }
1239 1240 1241
static inline void pci_mmcfg_late_init(void) { }
#endif

1242 1243
int pci_ext_cfg_avail(struct pci_dev *dev);

A
Andrew Morton 已提交
1244
void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1245

1246 1247 1248
#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);
1249
extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
1250 1251 1252 1253 1254 1255 1256 1257
#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)
{
}
1258 1259 1260 1261
static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
{
	return IRQ_NONE;
}
1262 1263
#endif

1264 1265 1266 1267 1268
#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

L
Linus Torvalds 已提交
1269 1270
#endif /* __KERNEL__ */
#endif /* LINUX_PCI_H */