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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * pci.h
3 *
4 * PCI defines and function prototypes
5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
7 *
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
10 *
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
15 */
16
17#ifndef LINUX_PCI_H
18#define LINUX_PCI_H
19
Alex Chiangf46753c2008-06-10 15:28:50 -060020#include <linux/pci_regs.h> /* The pci register defines */
Linus Torvalds1da177e2005-04-16 15:20:36 -070021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022/*
23 * The PCI interface treats multi-function devices as independent
24 * devices. The slot/function address of each device is encoded
25 * in a single byte as follows:
26 *
27 * 7:3 = slot
28 * 2:0 = function
29 */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -080030#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
Linus Torvalds1da177e2005-04-16 15:20:36 -070031#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)
32#define PCI_FUNC(devfn) ((devfn) & 0x07)
33
34/* Ioctls for /proc/bus/pci/X/Y nodes. */
35#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)
36#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */
37#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */
38#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */
39#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */
40
41#ifdef __KERNEL__
42
David Woodhouse778382e2006-04-29 01:46:02 +010043#include <linux/mod_devicetable.h>
44
Linus Torvalds1da177e2005-04-16 15:20:36 -070045#include <linux/types.h>
Sam Ravnborg98db6f12008-04-29 22:38:48 +020046#include <linux/init.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070047#include <linux/ioport.h>
48#include <linux/list.h>
Andrew Morton4a7fb632006-08-14 22:43:17 -070049#include <linux/compiler.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070050#include <linux/errno.h>
Alex Chiangf46753c2008-06-10 15:28:50 -060051#include <linux/kobject.h>
Inaky Perez-Gonzalezbae94d02006-11-22 12:40:31 -080052#include <asm/atomic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070053#include <linux/device.h>
Stephen Rothwell1388cc92008-10-22 13:39:55 +110054#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070055
Adrian Bunk7e7a43c2006-12-19 13:12:07 -080056/* Include the ID list */
57#include <linux/pci_ids.h>
58
Alex Chiangf46753c2008-06-10 15:28:50 -060059/* pci_slot represents a physical slot */
60struct pci_slot {
61 struct pci_bus *bus; /* The bus this slot is on */
62 struct list_head list; /* node in list of slots on this bus */
63 struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */
64 unsigned char number; /* PCI_SLOT(pci_dev->devfn) */
65 struct kobject kobj;
66};
67
Alex Chiang0ad772e2008-10-20 17:41:07 -060068static inline const char *pci_slot_name(const struct pci_slot *slot)
69{
70 return kobject_name(&slot->kobj);
71}
72
Linus Torvalds1da177e2005-04-16 15:20:36 -070073/* File state for mmap()s on /proc/bus/pci/X/Y */
74enum pci_mmap_state {
75 pci_mmap_io,
76 pci_mmap_mem
77};
78
79/* This defines the direction arg to the DMA mapping routines. */
80#define PCI_DMA_BIDIRECTIONAL 0
81#define PCI_DMA_TODEVICE 1
82#define PCI_DMA_FROMDEVICE 2
83#define PCI_DMA_NONE 3
84
Yu Zhaofde09c62008-11-22 02:39:32 +080085/*
86 * For PCI devices, the region numbers are assigned this way:
87 */
88enum {
89 /* #0-5: standard PCI resources */
90 PCI_STD_RESOURCES,
91 PCI_STD_RESOURCE_END = 5,
92
93 /* #6: expansion ROM resource */
94 PCI_ROM_RESOURCE,
95
96 /* resources assigned to buses behind the bridge */
97#define PCI_BRIDGE_RESOURCE_NUM 4
98
99 PCI_BRIDGE_RESOURCES,
100 PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
101 PCI_BRIDGE_RESOURCE_NUM - 1,
102
103 /* total resources associated with a PCI device */
104 PCI_NUM_RESOURCES,
105
106 /* preserve this for compatibility */
107 DEVICE_COUNT_RESOURCE
108};
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
110typedef int __bitwise pci_power_t;
111
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700112#define PCI_D0 ((pci_power_t __force) 0)
113#define PCI_D1 ((pci_power_t __force) 1)
114#define PCI_D2 ((pci_power_t __force) 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115#define PCI_D3hot ((pci_power_t __force) 3)
116#define PCI_D3cold ((pci_power_t __force) 4)
Daniel Ritz3fe9d192005-08-17 15:32:19 -0700117#define PCI_UNKNOWN ((pci_power_t __force) 5)
Pavel Machek438510f2005-04-16 15:25:24 -0700118#define PCI_POWER_ERROR ((pci_power_t __force) -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +0100120#define PCI_PM_D2_DELAY 200
121#define PCI_PM_D3_WAIT 10
122#define PCI_PM_BUS_WAIT 50
123
linas392a1ce2005-11-16 17:10:41 -0600124/** The pci_channel state describes connectivity between the CPU and
125 * the pci device. If some PCI bus between here and the pci device
126 * has crashed or locked up, this info is reflected here.
127 */
128typedef unsigned int __bitwise pci_channel_state_t;
129
130enum pci_channel_state {
131 /* I/O channel is in normal state */
132 pci_channel_io_normal = (__force pci_channel_state_t) 1,
133
134 /* I/O to channel is blocked */
135 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
136
137 /* PCI card is dead */
138 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
139};
140
Brian Kingf7bdd122007-04-06 16:39:36 -0500141typedef unsigned int __bitwise pcie_reset_state_t;
142
143enum pcie_reset_state {
144 /* Reset is NOT asserted (Use to deassert reset) */
145 pcie_deassert_reset = (__force pcie_reset_state_t) 1,
146
147 /* Use #PERST to reset PCI-E device */
148 pcie_warm_reset = (__force pcie_reset_state_t) 2,
149
150 /* Use PCI-E Hot Reset to reset device */
151 pcie_hot_reset = (__force pcie_reset_state_t) 3
152};
153
David Millerba698ad2007-10-25 01:16:30 -0700154typedef unsigned short __bitwise pci_dev_flags_t;
155enum pci_dev_flags {
156 /* INTX_DISABLE in PCI_COMMAND register disables MSI
157 * generation too.
158 */
159 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
Alan Cox979b1792008-07-24 17:18:38 +0100160 /* Device configuration is irrevocably lost if disabled into D3 */
161 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
David Millerba698ad2007-10-25 01:16:30 -0700162};
163
Stefan Assmanne1d3a902008-06-11 16:35:17 +0200164enum pci_irq_reroute_variant {
165 INTEL_IRQ_REROUTE_VARIANT = 1,
166 MAX_IRQ_REROUTE_VARIANTS = 3
167};
168
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200169typedef unsigned short __bitwise pci_bus_flags_t;
170enum pci_bus_flags {
Peter Orubad556ad42007-05-15 13:59:13 +0200171 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
172 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200173};
174
Shaohua Li41017f02006-02-08 17:11:38 +0800175struct pci_cap_saved_state {
176 struct hlist_node next;
177 char cap_nr;
178 u32 data[0];
179};
180
Shaohua Li7d715a62008-02-25 09:46:41 +0800181struct pcie_link_state;
Jesse Barnesee69439c2008-04-28 12:30:35 -0700182struct pci_vpd;
183
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184/*
185 * The pci_dev structure is used to describe PCI devices.
186 */
187struct pci_dev {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 struct list_head bus_list; /* node in per-bus list */
189 struct pci_bus *bus; /* bus this device is on */
190 struct pci_bus *subordinate; /* bus this device bridges to */
191
192 void *sysdata; /* hook for sys-specific extension */
193 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
Alex Chiangf46753c2008-06-10 15:28:50 -0600194 struct pci_slot *slot; /* Physical slot this device is in */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195
196 unsigned int devfn; /* encoded device & function index */
197 unsigned short vendor;
198 unsigned short device;
199 unsigned short subsystem_vendor;
200 unsigned short subsystem_device;
201 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
Auke Kokb8a3a522007-06-08 15:46:30 -0700202 u8 revision; /* PCI revision, low byte of class word */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
Keshavamurthy, Anil S994a65e2007-10-21 16:41:46 -0700204 u8 pcie_type; /* PCI-E device/port type */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205 u8 rom_base_reg; /* which config register controls the ROM */
Kristen Accardiffeff782005-11-02 16:24:32 -0800206 u8 pin; /* which interrupt pin this device uses */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700207
208 struct pci_driver *driver; /* which driver has allocated this device */
209 u64 dma_mask; /* Mask of the bits of bus address this
210 device implements. Normally this is
211 0xffffffff. You only need to change
212 this if your device has broken DMA
213 or supports 64-bit transfers. */
214
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800215 struct device_dma_parameters dma_parms;
216
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217 pci_power_t current_state; /* Current operating state. In ACPI-speak,
218 this is D0-D3, D0 being fully functional,
219 and D3 being off. */
Rafael J. Wysocki337001b2008-07-07 03:36:24 +0200220 int pm_cap; /* PM capability offset in the
221 configuration space */
222 unsigned int pme_support:5; /* Bitmask of states from which PME#
223 can be generated */
224 unsigned int d1_support:1; /* Low power state D1 is supported */
225 unsigned int d2_support:1; /* Low power state D2 is supported */
226 unsigned int no_d1d2:1; /* Only allow D0 and D3 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227
Shaohua Li7d715a62008-02-25 09:46:41 +0800228#ifdef CONFIG_PCIEASPM
229 struct pcie_link_state *link_state; /* ASPM link state. */
230#endif
231
linas392a1ce2005-11-16 17:10:41 -0600232 pci_channel_state_t error_state; /* current connectivity state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233 struct device dev; /* Generic device interface */
234
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 int cfg_size; /* Size of configuration space */
236
237 /*
238 * Instead of touching interrupt line and base address registers
239 * directly, use the values stored here. They might be different!
240 */
241 unsigned int irq;
242 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
243
244 /* These fields are used by common fixups */
245 unsigned int transparent:1; /* Transparent PCI bridge */
246 unsigned int multifunction:1;/* Part of multi-function device */
247 /* keep track of device state */
Greg Kroah-Hartman8a1bc902008-02-14 14:56:56 -0800248 unsigned int is_added:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 unsigned int is_busmaster:1; /* device is busmaster */
Kristen Accardi4602b882005-08-16 15:15:58 -0700250 unsigned int no_msi:1; /* device may not use msi */
Brian Kinge04b0ea2005-09-27 01:21:55 -0700251 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
Doug Thompsonbd8481e2006-05-08 17:06:09 -0700252 unsigned int broken_parity_status:1; /* Device generates false positive parity */
Stefan Assmanne1d3a902008-06-11 16:35:17 +0200253 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */
Shaohua Li99dc8042006-05-26 10:58:27 +0800254 unsigned int msi_enabled:1;
255 unsigned int msix_enabled:1;
Yu Zhao58c3a722008-10-14 14:02:53 +0800256 unsigned int ari_enabled:1; /* ARI forwarding */
Tejun Heo9ac78492007-01-20 16:00:26 +0900257 unsigned int is_managed:1;
Keshavamurthy, Anil S994a65e2007-10-21 16:41:46 -0700258 unsigned int is_pcie:1;
Rafael J. Wysockiaa8c6c92009-01-16 21:54:43 +0100259 unsigned int state_saved:1;
David Millerba698ad2007-10-25 01:16:30 -0700260 pci_dev_flags_t dev_flags;
Inaky Perez-Gonzalezbae94d02006-11-22 12:40:31 -0800261 atomic_t enable_cnt; /* pci_enable_device has been called */
Kristen Accardi4602b882005-08-16 15:15:58 -0700262
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 u32 saved_config_space[16]; /* config space saved at suspend time */
Shaohua Li41017f02006-02-08 17:11:38 +0800264 struct hlist_head saved_cap_space;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
266 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
267 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
venkatesh.pallipadi@intel.com45aec1ae2008-03-18 17:00:22 -0700268 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
Eric W. Biedermanded86d82007-01-28 12:42:52 -0700269#ifdef CONFIG_PCI_MSI
Michael Ellerman4aa9bc92007-04-05 17:19:10 +1000270 struct list_head msi_list;
Eric W. Biedermanded86d82007-01-28 12:42:52 -0700271#endif
Ben Hutchings94e61082008-03-05 16:52:39 +0000272 struct pci_vpd *vpd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273};
274
Michael Ellerman65891212007-04-05 17:19:08 +1000275extern struct pci_dev *alloc_pci_dev(void);
276
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
278#define to_pci_dev(n) container_of(n, struct pci_dev, dev)
279#define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
280
Linas Vepstasa7369f12006-12-12 16:55:59 -0600281static inline int pci_channel_offline(struct pci_dev *pdev)
282{
283 return (pdev->error_state != pci_channel_io_normal);
284}
285
Shaohua Li41017f02006-02-08 17:11:38 +0800286static inline struct pci_cap_saved_state *pci_find_saved_cap(
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800287 struct pci_dev *pci_dev, char cap)
Shaohua Li41017f02006-02-08 17:11:38 +0800288{
289 struct pci_cap_saved_state *tmp;
290 struct hlist_node *pos;
291
292 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
293 if (tmp->cap_nr == cap)
294 return tmp;
295 }
296 return NULL;
297}
298
299static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
300 struct pci_cap_saved_state *new_cap)
301{
302 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
303}
304
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305#ifndef PCI_BUS_NUM_RESOURCES
Yinghai Lu30a18d62008-02-19 03:21:20 -0800306#define PCI_BUS_NUM_RESOURCES 16
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307#endif
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700308
309#define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310
311struct pci_bus {
312 struct list_head node; /* node in list of buses */
313 struct pci_bus *parent; /* parent bus this bridge is on */
314 struct list_head children; /* list of child buses */
315 struct list_head devices; /* list of devices on this bus */
316 struct pci_dev *self; /* bridge device as seen by parent */
Alex Chiangf46753c2008-06-10 15:28:50 -0600317 struct list_head slots; /* list of slots on this bus */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 struct resource *resource[PCI_BUS_NUM_RESOURCES];
319 /* address space routed to this bus */
320
321 struct pci_ops *ops; /* configuration access functions */
322 void *sysdata; /* hook for sys-specific extension */
323 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
324
325 unsigned char number; /* bus number */
326 unsigned char primary; /* number of primary bridge */
327 unsigned char secondary; /* number of secondary bridge */
328 unsigned char subordinate; /* max number of subordinate buses */
329
330 char name[48];
331
332 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
Michael S. Tsirkin6e325a62006-02-14 18:52:22 +0200333 pci_bus_flags_t bus_flags; /* Inherited by child busses */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334 struct device *bridge;
Greg Kroah-Hartmanfd7d1ce2007-05-22 22:47:54 -0400335 struct device dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
337 struct bin_attribute *legacy_mem; /* legacy mem */
Greg Kroah-Hartmancc74d962008-03-12 21:48:03 -0700338 unsigned int is_added:1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339};
340
341#define pci_bus_b(n) list_entry(n, struct pci_bus, node)
Greg Kroah-Hartmanfd7d1ce2007-05-22 22:47:54 -0400342#define to_pci_bus(n) container_of(n, struct pci_bus, dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343
Rafael J. Wysocki16cf0eb2009-01-05 14:50:27 +0100344#ifdef CONFIG_PCI_MSI
345static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
346{
347 return pci_dev->msi_enabled || pci_dev->msix_enabled;
348}
349#else
350static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
351#endif
352
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353/*
354 * Error values that may be returned by PCI functions.
355 */
356#define PCIBIOS_SUCCESSFUL 0x00
357#define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
358#define PCIBIOS_BAD_VENDOR_ID 0x83
359#define PCIBIOS_DEVICE_NOT_FOUND 0x86
360#define PCIBIOS_BAD_REGISTER_NUMBER 0x87
361#define PCIBIOS_SET_FAILED 0x88
362#define PCIBIOS_BUFFER_TOO_SMALL 0x89
363
364/* Low-level architecture-dependent routines */
365
366struct pci_ops {
367 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
368 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
369};
370
Matthew Wilcoxb6ce0682008-02-10 09:45:28 -0500371/*
372 * ACPI needs to be able to access PCI config space before we've done a
373 * PCI bus scan and created pci_bus structures.
374 */
375extern int raw_pci_read(unsigned int domain, unsigned int bus,
376 unsigned int devfn, int reg, int len, u32 *val);
377extern int raw_pci_write(unsigned int domain, unsigned int bus,
378 unsigned int devfn, int reg, int len, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379
380struct pci_bus_region {
Benjamin Herrenschmidtc40a22e2007-12-10 17:32:15 +1100381 resource_size_t start;
382 resource_size_t end;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383};
384
385struct pci_dynids {
386 spinlock_t lock; /* protects list, index */
387 struct list_head list; /* for IDs added at runtime */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388};
389
linas392a1ce2005-11-16 17:10:41 -0600390/* ---------------------------------------------------------------- */
391/** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
Rolf Eike Beer579082d2007-07-10 13:35:05 +0200392 * a set of callbacks in struct pci_error_handlers, then that device driver
linas392a1ce2005-11-16 17:10:41 -0600393 * will be notified of PCI bus errors, and will be driven to recovery
394 * when an error occurs.
395 */
396
397typedef unsigned int __bitwise pci_ers_result_t;
398
399enum pci_ers_result {
400 /* no result/none/not supported in device driver */
401 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
402
403 /* Device driver can recover without slot reset */
404 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
405
406 /* Device driver wants slot to be reset. */
407 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
408
409 /* Device has completely failed, is unrecoverable */
410 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
411
412 /* Device driver is fully recovered and operational */
413 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
414};
415
416/* PCI bus error event callbacks */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800417struct pci_error_handlers {
linas392a1ce2005-11-16 17:10:41 -0600418 /* PCI bus error detected on this device */
419 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800420 enum pci_channel_state error);
linas392a1ce2005-11-16 17:10:41 -0600421
422 /* MMIO has been re-enabled, but not DMA */
423 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
424
425 /* PCI Express link has been reset */
426 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
427
428 /* PCI slot has been reset */
429 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
430
431 /* Device driver may resume normal operations */
432 void (*resume)(struct pci_dev *dev);
433};
434
435/* ---------------------------------------------------------------- */
436
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437struct module;
438struct pci_driver {
439 struct list_head node;
440 char *name;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
442 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
443 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
444 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
Linus Torvaldscbd69db2006-06-24 14:50:29 -0700445 int (*suspend_late) (struct pci_dev *dev, pm_message_t state);
446 int (*resume_early) (struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 int (*resume) (struct pci_dev *dev); /* Device woken up */
Greg KHc8958172005-04-08 14:53:31 +0900448 void (*shutdown) (struct pci_dev *dev);
linas392a1ce2005-11-16 17:10:41 -0600449 struct pci_error_handlers *err_handler;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 struct device_driver driver;
451 struct pci_dynids dynids;
452};
453
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800454#define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455
456/**
Andrew Morton9f9351b2008-03-10 11:43:34 -0700457 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
Jonas Bonn90a1ba02008-02-22 11:02:21 +0100458 * @_table: device table name
459 *
460 * This macro is used to create a struct pci_device_id array (a device table)
461 * in a generic manner.
462 */
Andrew Morton9f9351b2008-03-10 11:43:34 -0700463#define DEFINE_PCI_DEVICE_TABLE(_table) \
Jonas Bonn90a1ba02008-02-22 11:02:21 +0100464 const struct pci_device_id _table[] __devinitconst
465
466/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700467 * PCI_DEVICE - macro used to describe a specific pci device
468 * @vend: the 16 bit PCI Vendor ID
469 * @dev: the 16 bit PCI Device ID
470 *
471 * This macro is used to create a struct pci_device_id that matches a
472 * specific device. The subvendor and subdevice fields will be set to
473 * PCI_ANY_ID.
474 */
475#define PCI_DEVICE(vend,dev) \
476 .vendor = (vend), .device = (dev), \
477 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
478
479/**
480 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
481 * @dev_class: the class, subclass, prog-if triple for this device
482 * @dev_class_mask: the class mask for this device
483 *
484 * This macro is used to create a struct pci_device_id that matches a
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700485 * specific PCI class. The vendor, device, subvendor, and subdevice
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486 * fields will be set to PCI_ANY_ID.
487 */
488#define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
489 .class = (dev_class), .class_mask = (dev_class_mask), \
490 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
491 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
492
Alan Cox1597cac2006-12-04 15:14:45 -0800493/**
494 * PCI_VDEVICE - macro used to describe a specific pci device in short form
Zhao, Yuc322b282008-10-13 19:36:05 +0800495 * @vendor: the vendor name
496 * @device: the 16 bit PCI Device ID
Alan Cox1597cac2006-12-04 15:14:45 -0800497 *
498 * This macro is used to create a struct pci_device_id that matches a
499 * specific PCI device. The subvendor, and subdevice fields will be set
500 * to PCI_ANY_ID. The macro allows the next field to follow as the device
501 * private data.
502 */
503
504#define PCI_VDEVICE(vendor, device) \
505 PCI_VENDOR_ID_##vendor, (device), \
506 PCI_ANY_ID, PCI_ANY_ID, 0, 0
507
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508/* these external functions are only available when PCI support is enabled */
509#ifdef CONFIG_PCI
510
511extern struct bus_type pci_bus_type;
512
513/* Do NOT directly access these two variables, unless you are arch specific pci
514 * code, or pci core code. */
515extern struct list_head pci_root_buses; /* list of all known PCI buses */
Zhang, Yanmined4aaad2007-07-15 23:39:39 -0700516/* Some device drivers need know if pci is initiated */
517extern int no_pci_devices(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518
519void pcibios_fixup_bus(struct pci_bus *);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700520int __must_check pcibios_enable_device(struct pci_dev *, int mask);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800521char *pcibios_setup(char *str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522
523/* Used only when drivers/pci/setup.c is used */
Greg Kroah-Hartmane31dd6e2006-06-12 17:06:02 -0700524void pcibios_align_resource(void *, struct resource *, resource_size_t,
525 resource_size_t);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526void pcibios_update_irq(struct pci_dev *, int irq);
527
528/* Generic PCI functions used internally */
529
530extern struct pci_bus *pci_find_bus(int domain, int busnr);
Rajesh Shahc431ada2005-04-28 00:25:45 -0700531void pci_bus_add_devices(struct pci_bus *bus);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800532struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
533 struct pci_ops *ops, void *sysdata);
Sam Ravnborg98db6f12008-04-29 22:38:48 +0200534static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800535 void *sysdata)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536{
Rajesh Shahc431ada2005-04-28 00:25:45 -0700537 struct pci_bus *root_bus;
538 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
539 if (root_bus)
540 pci_bus_add_devices(root_bus);
541 return root_bus;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800543struct pci_bus *pci_create_bus(struct device *parent, int bus,
544 struct pci_ops *ops, void *sysdata);
545struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
546 int busnr);
Alex Chiangf46753c2008-06-10 15:28:50 -0600547struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
Alex Chiang828f3762008-10-20 17:40:52 -0600548 const char *name,
549 struct hotplug_slot *hotplug);
Alex Chiangf46753c2008-06-10 15:28:50 -0600550void pci_destroy_slot(struct pci_slot *slot);
Alex Chiangd25b7c82008-10-20 17:40:47 -0600551void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552int pci_scan_slot(struct pci_bus *bus, int devfn);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800553struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
Paul Mackerrascdb9b9f2005-09-06 09:31:03 +1000554void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555unsigned int pci_scan_child_bus(struct pci_bus *bus);
Greg Kroah-Hartmanb19441a2006-08-28 11:43:25 -0700556int __must_check pci_bus_add_device(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557void pci_read_bridge_bases(struct pci_bus *child);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800558struct resource *pci_find_parent_resource(const struct pci_dev *dev,
559 struct resource *res);
Bjorn Helgaas57c2cf72008-12-11 11:24:23 -0700560u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
Bjorn Helgaas68feac82008-12-16 21:36:55 -0700562u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
564extern void pci_dev_put(struct pci_dev *dev);
565extern void pci_remove_bus(struct pci_bus *b);
566extern void pci_remove_bus_device(struct pci_dev *dev);
Satoru Takeuchi24f8aa92006-09-12 10:16:36 -0700567extern void pci_stop_bus_device(struct pci_dev *dev);
Dominik Brodowskib3743fa2005-09-09 13:03:23 -0700568void pci_setup_cardbus(struct pci_bus *bus);
Matt Domsch6b4b78f2006-09-29 15:23:23 -0500569extern void pci_sort_breadthfirst(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
571/* Generic PCI functions exported to card drivers */
572
Jeff Garzikbd3989e2007-10-29 09:48:09 -0400573#ifdef CONFIG_PCI_LEGACY
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800574struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
575 unsigned int device,
Greg KHb08508c2008-08-26 08:20:34 -0700576 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800577struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
578 unsigned int devfn);
Jeff Garzikbd3989e2007-10-29 09:48:09 -0400579#endif /* CONFIG_PCI_LEGACY */
580
James Bottomley388c8c12008-08-03 13:02:12 -0500581enum pci_lost_interrupt_reason {
582 PCI_LOST_IRQ_NO_INFORMATION = 0,
583 PCI_LOST_IRQ_DISABLE_MSI,
584 PCI_LOST_IRQ_DISABLE_MSIX,
585 PCI_LOST_IRQ_DISABLE_ACPI,
586};
587enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800588int pci_find_capability(struct pci_dev *dev, int cap);
589int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
590int pci_find_ext_capability(struct pci_dev *dev, int cap);
591int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
592int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
Alan Cox29f3eb62006-10-16 16:20:21 -0700593struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700594
Andrew Mortond42552c2006-10-21 10:24:12 -0700595struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
596 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800597struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598 unsigned int ss_vendor, unsigned int ss_device,
Greg KHb08508c2008-08-26 08:20:34 -0700599 struct pci_dev *from);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800600struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
601struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn);
602struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603int pci_dev_present(const struct pci_device_id *ids);
604
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800605int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
606 int where, u8 *val);
607int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
608 int where, u16 *val);
609int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
610 int where, u32 *val);
611int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
612 int where, u8 val);
613int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
614 int where, u16 val);
615int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
616 int where, u32 val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617
618static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
619{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800620 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621}
622static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
623{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800624 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700625}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800626static inline int pci_read_config_dword(struct pci_dev *dev, int where,
627 u32 *val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700628{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800629 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630}
631static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
632{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800633 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634}
635static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
636{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800637 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700638}
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800639static inline int pci_write_config_dword(struct pci_dev *dev, int where,
640 u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700641{
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800642 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643}
644
Andrew Morton4a7fb632006-08-14 22:43:17 -0700645int __must_check pci_enable_device(struct pci_dev *dev);
Benjamin Herrenschmidtb7189892007-12-20 15:28:08 +1100646int __must_check pci_enable_device_io(struct pci_dev *dev);
647int __must_check pci_enable_device_mem(struct pci_dev *dev);
Tejun Heo0b62e132007-07-27 14:43:35 +0900648int __must_check pci_reenable_device(struct pci_dev *);
Tejun Heo9ac78492007-01-20 16:00:26 +0900649int __must_check pcim_enable_device(struct pci_dev *pdev);
650void pcim_pin_device(struct pci_dev *pdev);
651
652static inline int pci_is_managed(struct pci_dev *pdev)
653{
654 return pdev->is_managed;
655}
656
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657void pci_disable_device(struct pci_dev *dev);
658void pci_set_master(struct pci_dev *dev);
Ben Hutchings6a479072008-12-23 03:08:29 +0000659void pci_clear_master(struct pci_dev *dev);
Brian Kingf7bdd122007-04-06 16:39:36 -0500660int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661#define HAVE_PCI_SET_MWI
Andrew Morton4a7fb632006-08-14 22:43:17 -0700662int __must_check pci_set_mwi(struct pci_dev *dev);
Randy Dunlap694625c2007-07-09 11:55:54 -0700663int pci_try_set_mwi(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664void pci_clear_mwi(struct pci_dev *dev);
Brett M Russa04ce0f2005-08-15 15:23:41 -0400665void pci_intx(struct pci_dev *dev, int enable);
Eric W. Biedermanf5f2b132007-03-05 00:30:07 -0800666void pci_msi_off(struct pci_dev *dev);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700667int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
668int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800669int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
FUJITA Tomonori59fc67d2008-02-04 22:28:14 -0800670int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
Peter Orubad556ad42007-05-15 13:59:13 +0200671int pcix_get_max_mmrbc(struct pci_dev *dev);
672int pcix_get_mmrbc(struct pci_dev *dev);
673int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
Brice Goglin2637e5b2007-08-14 12:43:48 +0200674int pcie_get_readrq(struct pci_dev *dev);
Peter Orubad556ad42007-05-15 13:59:13 +0200675int pcie_set_readrq(struct pci_dev *dev, int rq);
Sheng Yang8dd7f802008-10-21 17:38:25 +0800676int pci_reset_function(struct pci_dev *dev);
677int pci_execute_reset_function(struct pci_dev *dev);
Yu Zhao14add802008-11-22 02:38:52 +0800678void pci_update_resource(struct pci_dev *dev, int resno);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700679int __must_check pci_assign_resource(struct pci_dev *dev, int i);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900680int pci_select_bars(struct pci_dev *dev, unsigned long flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681
682/* ROM control related routines */
Alan Coxe416de52008-09-23 17:25:10 +0100683int pci_enable_rom(struct pci_dev *pdev);
684void pci_disable_rom(struct pci_dev *pdev);
Dave Jones144a50e2005-08-09 00:20:10 -0400685void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
Timothy S. Nelson97c44832009-01-30 06:12:47 +1100687size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
689/* Power management related routines */
690int pci_save_state(struct pci_dev *dev);
691int pci_restore_state(struct pci_dev *dev);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700692int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
693pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
Rafael J. Wysockie5899e12008-07-19 14:39:24 +0200694bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
Rafael J. Wysocki5a6c9b62008-08-08 00:14:24 +0200695void pci_pme_active(struct pci_dev *dev, bool enable);
Linus Torvalds9c8550e2005-09-09 15:43:46 -0700696int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
Rafael J. Wysocki0235c4f2008-08-18 21:38:00 +0200697int pci_wake_from_d3(struct pci_dev *dev, bool enable);
Rafael J. Wysockie5899e12008-07-19 14:39:24 +0200698pci_power_t pci_target_state(struct pci_dev *dev);
Rafael J. Wysocki404cc2d2008-07-07 03:35:26 +0200699int pci_prepare_to_sleep(struct pci_dev *dev);
700int pci_back_from_sleep(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701
Kumar Galace5ccde2007-07-16 23:27:10 -0500702/* Functions for PCI Hotplug drivers to use */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800703int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
Kumar Galace5ccde2007-07-16 23:27:10 -0500704
Stephen Hemminger287d19c2008-12-18 09:17:16 -0800705/* Vital product data routines */
706ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
707ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
Stephen Hemmingerdb567942008-12-18 09:17:16 -0800708int pci_vpd_truncate(struct pci_dev *dev, size_t size);
Stephen Hemminger287d19c2008-12-18 09:17:16 -0800709
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
711void pci_bus_assign_resources(struct pci_bus *bus);
712void pci_bus_size_bridges(struct pci_bus *bus);
713int pci_claim_resource(struct pci_dev *, int);
714void pci_assign_unassigned_resources(void);
715void pdev_enable_device(struct pci_dev *);
716void pdev_sort_resources(struct pci_dev *, struct resource_list *);
Bjorn Helgaas842de402008-03-04 11:56:47 -0700717int pci_enable_resources(struct pci_dev *, int mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
719 int (*)(struct pci_dev *, u8, u8));
720#define HAVE_PCI_REQ_REGIONS 2
Andrew Morton4a7fb632006-08-14 22:43:17 -0700721int __must_check pci_request_regions(struct pci_dev *, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700722int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723void pci_release_regions(struct pci_dev *);
Andrew Morton4a7fb632006-08-14 22:43:17 -0700724int __must_check pci_request_region(struct pci_dev *, int, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700725int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726void pci_release_region(struct pci_dev *, int);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900727int pci_request_selected_regions(struct pci_dev *, int, const char *);
Arjan van de Vene8de1482008-10-22 19:55:31 -0700728int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
Hidetoshi Setoc87deff2006-12-18 10:31:06 +0900729void pci_release_selected_regions(struct pci_dev *, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730
731/* drivers/pci/bus.c */
Andrew Morton4a7fb632006-08-14 22:43:17 -0700732int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
733 struct resource *res, resource_size_t size,
734 resource_size_t align, resource_size_t min,
735 unsigned int type_mask,
736 void (*alignf)(void *, struct resource *,
737 resource_size_t, resource_size_t),
738 void *alignf_data);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739void pci_enable_bridges(struct pci_bus *bus);
740
Laurent riffard863b18f2005-10-27 23:12:54 +0200741/* Proper probing supporting hot-pluggable devices */
Greg Kroah-Hartman725522b2007-01-15 11:50:02 -0800742int __must_check __pci_register_driver(struct pci_driver *, struct module *,
743 const char *mod_name);
Andrew Mortonbba81162008-07-30 12:07:04 -0700744
745/*
746 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded
747 */
748#define pci_register_driver(driver) \
749 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
Laurent riffard863b18f2005-10-27 23:12:54 +0200750
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800751void pci_unregister_driver(struct pci_driver *dev);
752void pci_remove_behind_bridge(struct pci_dev *dev);
753struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
754const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
755 struct pci_dev *dev);
756int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
757 int pass);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758
Paul Mackerrascecf4862005-08-18 14:33:01 +1000759void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
760 void *userdata);
Yinghai Lu70b9f7d2008-04-28 16:27:23 -0700761int pci_cfg_space_size_ext(struct pci_dev *dev);
Benjamin Herrenschmidtac7dc652005-12-13 18:09:16 +1100762int pci_cfg_space_size(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800763unsigned char pci_bus_max_busnr(struct pci_bus *bus);
Paul Mackerrascecf4862005-08-18 14:33:01 +1000764
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765/* kmem_cache style wrapper around pci_alloc_consistent() */
766
767#include <linux/dmapool.h>
768
769#define pci_pool dma_pool
770#define pci_pool_create(name, pdev, size, align, allocation) \
771 dma_pool_create(name, &pdev->dev, size, align, allocation)
772#define pci_pool_destroy(pool) dma_pool_destroy(pool)
773#define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
774#define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
775
David S. Millere24c2d92005-06-02 12:55:50 -0700776enum pci_dma_burst_strategy {
777 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
778 strategy_parameter is N/A */
779 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
780 byte boundaries */
781 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
782 strategy_parameter byte boundaries */
783};
784
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785struct msix_entry {
Yinghai Lu16dbef42008-08-15 19:36:45 -0700786 u32 vector; /* kernel uses to write allocated vector */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 u16 entry; /* driver uses to specify entry, OS writes */
788};
789
Eric W. Biederman0366f8f2006-10-04 02:16:33 -0700790
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791#ifndef CONFIG_PCI_MSI
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800792static inline int pci_enable_msi(struct pci_dev *dev)
793{
794 return -1;
795}
796
Yinghai Lud52877c2008-04-23 14:58:09 -0700797static inline void pci_msi_shutdown(struct pci_dev *dev)
798{ }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800799static inline void pci_disable_msi(struct pci_dev *dev)
800{ }
801
802static inline int pci_enable_msix(struct pci_dev *dev,
803 struct msix_entry *entries, int nvec)
804{
805 return -1;
806}
807
Yinghai Lud52877c2008-04-23 14:58:09 -0700808static inline void pci_msix_shutdown(struct pci_dev *dev)
809{ }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800810static inline void pci_disable_msix(struct pci_dev *dev)
811{ }
812
813static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
814{ }
815
816static inline void pci_restore_msi_state(struct pci_dev *dev)
817{ }
Andrew Patterson07ae95f2008-11-10 15:31:05 -0700818static inline int pci_msi_enabled(void)
819{
820 return 0;
821}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822#else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823extern int pci_enable_msi(struct pci_dev *dev);
Yinghai Lud52877c2008-04-23 14:58:09 -0700824extern void pci_msi_shutdown(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825extern void pci_disable_msi(struct pci_dev *dev);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800826extern int pci_enable_msix(struct pci_dev *dev,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 struct msix_entry *entries, int nvec);
Yinghai Lud52877c2008-04-23 14:58:09 -0700828extern void pci_msix_shutdown(struct pci_dev *dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829extern void pci_disable_msix(struct pci_dev *dev);
830extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
Linas Vepstas94688cf2007-11-07 15:43:59 -0600831extern void pci_restore_msi_state(struct pci_dev *dev);
Andrew Patterson07ae95f2008-11-10 15:31:05 -0700832extern int pci_msi_enabled(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833#endif
834
Andrew Patterson3e1b1602008-11-10 15:30:55 -0700835#ifndef CONFIG_PCIEASPM
836static inline int pcie_aspm_enabled(void)
837{
838 return 0;
839}
840#else
841extern int pcie_aspm_enabled(void);
842#endif
843
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700844#ifdef CONFIG_HT_IRQ
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700845/* The functions a driver should call */
846int ht_create_irq(struct pci_dev *dev, int idx);
847void ht_destroy_irq(unsigned int irq);
Eric W. Biederman8b955b02006-10-04 02:16:55 -0700848#endif /* CONFIG_HT_IRQ */
849
Brian Kinge04b0ea2005-09-27 01:21:55 -0700850extern void pci_block_user_cfg_access(struct pci_dev *dev);
851extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
852
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700853/*
854 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
855 * a PCI domain is defined to be a set of PCI busses which share
856 * configuration space.
857 */
Jeff Garzik32a2eea2007-10-11 16:57:27 -0400858#ifdef CONFIG_PCI_DOMAINS
859extern int pci_domains_supported;
860#else
861enum { pci_domains_supported = 0 };
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800862static inline int pci_domain_nr(struct pci_bus *bus)
863{
864 return 0;
865}
866
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700867static inline int pci_proc_domain(struct pci_bus *bus)
868{
869 return 0;
870}
Jeff Garzik32a2eea2007-10-11 16:57:27 -0400871#endif /* CONFIG_PCI_DOMAINS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700872
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -0700873#else /* CONFIG_PCI is not enabled */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700874
875/*
876 * If the system does not have PCI, clearly these return errors. Define
877 * these as simple inline functions to avoid hair in drivers.
878 */
879
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800880#define _PCI_NOP(o, s, t) \
881 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
882 int where, t val) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800884
885#define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
886 _PCI_NOP(o, word, u16 x) \
887 _PCI_NOP(o, dword, u32 x)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888_PCI_NOP_ALL(read, *)
889_PCI_NOP_ALL(write,)
890
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800891static inline struct pci_dev *pci_find_device(unsigned int vendor,
892 unsigned int device,
Greg KHb08508c2008-08-26 08:20:34 -0700893 struct pci_dev *from)
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800894{
895 return NULL;
896}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800898static inline struct pci_dev *pci_find_slot(unsigned int bus,
899 unsigned int devfn)
900{
901 return NULL;
902}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903
Andrew Mortond42552c2006-10-21 10:24:12 -0700904static inline struct pci_dev *pci_get_device(unsigned int vendor,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800905 unsigned int device,
906 struct pci_dev *from)
907{
908 return NULL;
909}
Andrew Mortond42552c2006-10-21 10:24:12 -0700910
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800911static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
912 unsigned int device,
913 unsigned int ss_vendor,
914 unsigned int ss_device,
Greg KHb08508c2008-08-26 08:20:34 -0700915 struct pci_dev *from)
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800916{
917 return NULL;
918}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800920static inline struct pci_dev *pci_get_class(unsigned int class,
921 struct pci_dev *from)
922{
923 return NULL;
924}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925
926#define pci_dev_present(ids) (0)
Zhang, Yanmined4aaad2007-07-15 23:39:39 -0700927#define no_pci_devices() (1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700928#define pci_dev_put(dev) do { } while (0)
929
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800930static inline void pci_set_master(struct pci_dev *dev)
931{ }
932
933static inline int pci_enable_device(struct pci_dev *dev)
934{
935 return -EIO;
936}
937
938static inline void pci_disable_device(struct pci_dev *dev)
939{ }
940
941static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
942{
943 return -EIO;
944}
945
Randy Dunlap80be0382008-06-30 11:35:53 -0700946static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
947{
948 return -EIO;
949}
950
FUJITA Tomonori4d57cdf2008-02-04 22:27:55 -0800951static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
952 unsigned int size)
953{
954 return -EIO;
955}
956
FUJITA Tomonori59fc67d2008-02-04 22:28:14 -0800957static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
958 unsigned long mask)
959{
960 return -EIO;
961}
962
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800963static inline int pci_assign_resource(struct pci_dev *dev, int i)
964{
965 return -EBUSY;
966}
967
968static inline int __pci_register_driver(struct pci_driver *drv,
969 struct module *owner)
970{
971 return 0;
972}
973
974static inline int pci_register_driver(struct pci_driver *drv)
975{
976 return 0;
977}
978
979static inline void pci_unregister_driver(struct pci_driver *drv)
980{ }
981
982static inline int pci_find_capability(struct pci_dev *dev, int cap)
983{
984 return 0;
985}
986
987static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
988 int cap)
989{
990 return 0;
991}
992
993static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
994{
995 return 0;
996}
997
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998/* Power management related routines */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -0800999static inline int pci_save_state(struct pci_dev *dev)
1000{
1001 return 0;
1002}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001004static inline int pci_restore_state(struct pci_dev *dev)
1005{
1006 return 0;
1007}
1008
1009static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1010{
1011 return 0;
1012}
1013
1014static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1015 pm_message_t state)
1016{
1017 return PCI_D0;
1018}
1019
1020static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1021 int enable)
1022{
1023 return 0;
1024}
1025
1026static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1027{
1028 return -EIO;
1029}
1030
1031static inline void pci_release_regions(struct pci_dev *dev)
1032{ }
Sergei Shtylyov0da0ead2007-04-01 21:13:58 +04001033
Kumar Galaa46e8122005-07-29 12:16:27 -07001034#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
1035
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001036static inline void pci_block_user_cfg_access(struct pci_dev *dev)
1037{ }
1038
1039static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
1040{ }
Brian Kinge04b0ea2005-09-27 01:21:55 -07001041
Randy Dunlapd80d0212007-07-01 12:06:37 -07001042static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1043{ return NULL; }
1044
1045static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1046 unsigned int devfn)
1047{ return NULL; }
1048
1049static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
1050 unsigned int devfn)
1051{ return NULL; }
1052
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -07001053#endif /* CONFIG_PCI */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054
Greg Kroah-Hartman4352dfd2005-07-28 11:37:33 -07001055/* Include architecture-dependent settings and functions */
1056
1057#include <asm/pci.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058
1059/* these helpers provide future and backwards compatibility
1060 * for accessing popular PCI BAR info */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001061#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1062#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1063#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064#define pci_resource_len(dev,bar) \
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001065 ((pci_resource_start((dev), (bar)) == 0 && \
1066 pci_resource_end((dev), (bar)) == \
1067 pci_resource_start((dev), (bar))) ? 0 : \
1068 \
1069 (pci_resource_end((dev), (bar)) - \
1070 pci_resource_start((dev), (bar)) + 1))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001071
1072/* Similar to the helpers above, these manipulate per-pci_dev
1073 * driver-specific data. They are really just a wrapper around
1074 * the generic device structure functions of these calls.
1075 */
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001076static inline void *pci_get_drvdata(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001077{
1078 return dev_get_drvdata(&pdev->dev);
1079}
1080
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001081static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001082{
1083 dev_set_drvdata(&pdev->dev, data);
1084}
1085
1086/* If you want to know what to call your pci_dev, ask this function.
1087 * Again, it's a wrapper around the generic device.
1088 */
Greg KHc6c4f072008-07-03 09:49:39 -07001089static inline const char *pci_name(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090{
Greg KHc6c4f072008-07-03 09:49:39 -07001091 return dev_name(&pdev->dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092}
1093
Michael Ellerman2311b1f2005-05-13 17:44:10 +10001094
1095/* Some archs don't want to expose struct resource to userland as-is
1096 * in sysfs and /proc
1097 */
1098#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
1099static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001100 const struct resource *rsrc, resource_size_t *start,
Greg Kroah-Hartmane31dd6e2006-06-12 17:06:02 -07001101 resource_size_t *end)
Michael Ellerman2311b1f2005-05-13 17:44:10 +10001102{
1103 *start = rsrc->start;
1104 *end = rsrc->end;
1105}
1106#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1107
1108
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109/*
1110 * The world is not perfect and supplies us with broken PCI devices.
1111 * For at least a part of these bugs we need a work-around, so both
1112 * generic (drivers/pci/quirks.c) and per-architecture code can define
1113 * fixup hooks to be called for particular buggy devices.
1114 */
1115
1116struct pci_fixup {
1117 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
1118 void (*hook)(struct pci_dev *dev);
1119};
1120
1121enum pci_fixup_pass {
1122 pci_fixup_early, /* Before probing BARs */
1123 pci_fixup_header, /* After reading configuration header */
1124 pci_fixup_final, /* Final phase of device fixups */
1125 pci_fixup_enable, /* pci_enable_device() time */
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +02001126 pci_fixup_resume, /* pci_device_resume() */
1127 pci_fixup_suspend, /* pci_device_suspend */
1128 pci_fixup_resume_early, /* pci_device_resume_early() */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129};
1130
1131/* Anonymous variables would be nice... */
1132#define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
Adrian Bunk3ff6eec2008-01-24 22:16:20 +01001133 static const struct pci_fixup __pci_fixup_##name __used \
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 __attribute__((__section__(#section))) = { vendor, device, hook };
1135#define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1136 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1137 vendor##device##hook, vendor, device, hook)
1138#define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1139 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1140 vendor##device##hook, vendor, device, hook)
1141#define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1142 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1143 vendor##device##hook, vendor, device, hook)
1144#define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1145 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1146 vendor##device##hook, vendor, device, hook)
Alan Cox1597cac2006-12-04 15:14:45 -08001147#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1148 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1149 resume##vendor##device##hook, vendor, device, hook)
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +02001150#define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1151 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1152 resume_early##vendor##device##hook, vendor, device, hook)
1153#define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1154 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1155 suspend##vendor##device##hook, vendor, device, hook)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156
1157
1158void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1159
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001160void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
Al Viro5ea81762007-02-11 15:41:31 +00001161void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
Greg Kroah-Hartman05cca6e2008-01-30 15:21:33 -08001162void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
Al Viro5ea81762007-02-11 15:41:31 +00001163int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
Tejun Heo916fbfb2008-03-12 15:26:34 +09001164int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
1165 const char *name);
Tejun Heoec04b072007-03-09 19:45:58 +09001166void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
Al Viro5ea81762007-02-11 15:41:31 +00001167
Linus Torvalds1da177e2005-04-16 15:20:36 -07001168extern int pci_pci_problems;
Alan Cox236561e2006-09-30 23:27:03 -07001169#define PCIPCI_FAIL 1 /* No PCI PCI DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170#define PCIPCI_TRITON 2
1171#define PCIPCI_NATOMA 4
1172#define PCIPCI_VIAETBF 8
1173#define PCIPCI_VSFX 16
Alan Cox236561e2006-09-30 23:27:03 -07001174#define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1175#define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001176
Atsushi Nemoto4516a612007-02-05 16:36:06 -08001177extern unsigned long pci_cardbus_io_size;
1178extern unsigned long pci_cardbus_mem_size;
1179
Adrian Bunk19792a02008-05-05 21:25:47 +03001180int pcibios_add_platform_entries(struct pci_dev *dev);
1181void pcibios_disable_device(struct pci_dev *dev);
1182int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1183 enum pcie_reset_state state);
Michael Ellerman575e3342007-05-08 12:03:07 +10001184
Robert Hancock7752d5c2008-02-15 01:27:20 -08001185#ifdef CONFIG_PCI_MMCONFIG
Yinghai Lubb63b422008-02-28 23:56:50 -08001186extern void __init pci_mmcfg_early_init(void);
Robert Hancock7752d5c2008-02-15 01:27:20 -08001187extern void __init pci_mmcfg_late_init(void);
1188#else
Yinghai Lubb63b422008-02-28 23:56:50 -08001189static inline void pci_mmcfg_early_init(void) { }
Robert Hancock7752d5c2008-02-15 01:27:20 -08001190static inline void pci_mmcfg_late_init(void) { }
1191#endif
1192
Andrew Patterson0ef5f8f2008-11-10 15:30:50 -07001193int pci_ext_cfg_avail(struct pci_dev *dev);
1194
Andrew Morton1684f5d2008-12-01 14:30:30 -08001195void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
Arjan van de Venaa42d7c2008-09-28 16:36:11 -07001196
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197#endif /* __KERNEL__ */
1198#endif /* LINUX_PCI_H */