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PCI MSI: Add support for multiple MSI
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1/*
2 * pci.h
3 *
4 * PCI defines and function prototypes
5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
7 *
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
10 *
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
15 */
16
17#ifndef LINUX_PCI_H
18#define LINUX_PCI_H
19
20#include <linux/pci_regs.h> /* The pci register defines */
21
22/*
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 */
30#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))
31#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
43#include <linux/mod_devicetable.h>
44
45#include <linux/types.h>
46#include <linux/init.h>
47#include <linux/ioport.h>
48#include <linux/list.h>
49#include <linux/compiler.h>
50#include <linux/errno.h>
51#include <linux/kobject.h>
52#include <asm/atomic.h>
53#include <linux/device.h>
54#include <linux/io.h>
55
56/* Include the ID list */
57#include <linux/pci_ids.h>
58
59/* 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
68static inline const char *pci_slot_name(const struct pci_slot *slot)
69{
70 return kobject_name(&slot->kobj);
71}
72
73/* 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
85/*
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};
109
110typedef int __bitwise pci_power_t;
111
112#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)
115#define PCI_D3hot ((pci_power_t __force) 3)
116#define PCI_D3cold ((pci_power_t __force) 4)
117#define PCI_UNKNOWN ((pci_power_t __force) 5)
118#define PCI_POWER_ERROR ((pci_power_t __force) -1)
119
120#define PCI_PM_D2_DELAY 200
121#define PCI_PM_D3_WAIT 10
122#define PCI_PM_BUS_WAIT 50
123
124/** 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
141typedef 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
154typedef 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,
160 /* Device configuration is irrevocably lost if disabled into D3 */
161 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
162};
163
164enum pci_irq_reroute_variant {
165 INTEL_IRQ_REROUTE_VARIANT = 1,
166 MAX_IRQ_REROUTE_VARIANTS = 3
167};
168
169typedef unsigned short __bitwise pci_bus_flags_t;
170enum pci_bus_flags {
171 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
172 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
173};
174
175struct pci_cap_saved_state {
176 struct hlist_node next;
177 char cap_nr;
178 u32 data[0];
179};
180
181struct pcie_link_state;
182struct pci_vpd;
183
184/*
185 * The pci_dev structure is used to describe PCI devices.
186 */
187struct pci_dev {
188 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 */
194 struct pci_slot *slot; /* Physical slot this device is in */
195
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) */
202 u8 revision; /* PCI revision, low byte of class word */
203 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
204 u8 pcie_type; /* PCI-E device/port type */
205 u8 rom_base_reg; /* which config register controls the ROM */
206 u8 pin; /* which interrupt pin this device uses */
207
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
215 struct device_dma_parameters dma_parms;
216
217 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. */
220 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 */
227
228#ifdef CONFIG_PCIEASPM
229 struct pcie_link_state *link_state; /* ASPM link state. */
230#endif
231
232 pci_channel_state_t error_state; /* current connectivity state */
233 struct device dev; /* Generic device interface */
234
235 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 */
248 unsigned int is_added:1;
249 unsigned int is_busmaster:1; /* device is busmaster */
250 unsigned int no_msi:1; /* device may not use msi */
251 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
252 unsigned int broken_parity_status:1; /* Device generates false positive parity */
253 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */
254 unsigned int msi_enabled:1;
255 unsigned int msix_enabled:1;
256 unsigned int ari_enabled:1; /* ARI forwarding */
257 unsigned int is_managed:1;
258 unsigned int is_pcie:1;
259 unsigned int state_saved:1;
260 pci_dev_flags_t dev_flags;
261 atomic_t enable_cnt; /* pci_enable_device has been called */
262
263 u32 saved_config_space[16]; /* config space saved at suspend time */
264 struct hlist_head saved_cap_space;
265 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 */
268 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
269#ifdef CONFIG_PCI_MSI
270 struct list_head msi_list;
271#endif
272 struct pci_vpd *vpd;
273};
274
275extern struct pci_dev *alloc_pci_dev(void);
276
277#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
281static inline int pci_channel_offline(struct pci_dev *pdev)
282{
283 return (pdev->error_state != pci_channel_io_normal);
284}
285
286static inline struct pci_cap_saved_state *pci_find_saved_cap(
287 struct pci_dev *pci_dev, char cap)
288{
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
305#ifndef PCI_BUS_NUM_RESOURCES
306#define PCI_BUS_NUM_RESOURCES 16
307#endif
308
309#define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
310
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 */
317 struct list_head slots; /* list of slots on this bus */
318 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 */
333 pci_bus_flags_t bus_flags; /* Inherited by child busses */
334 struct device *bridge;
335 struct device dev;
336 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
337 struct bin_attribute *legacy_mem; /* legacy mem */
338 unsigned int is_added:1;
339};
340
341#define pci_bus_b(n) list_entry(n, struct pci_bus, node)
342#define to_pci_bus(n) container_of(n, struct pci_bus, dev)
343
344#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
353/*
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
371/*
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);
379
380struct pci_bus_region {
381 resource_size_t start;
382 resource_size_t end;
383};
384
385struct pci_dynids {
386 spinlock_t lock; /* protects list, index */
387 struct list_head list; /* for IDs added at runtime */
388};
389
390/* ---------------------------------------------------------------- */
391/** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
392 * a set of callbacks in struct pci_error_handlers, then that device driver
393 * 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 */
417struct pci_error_handlers {
418 /* PCI bus error detected on this device */
419 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
420 enum pci_channel_state error);
421
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
437struct module;
438struct pci_driver {
439 struct list_head node;
440 char *name;
441 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 */
445 int (*suspend_late) (struct pci_dev *dev, pm_message_t state);
446 int (*resume_early) (struct pci_dev *dev);
447 int (*resume) (struct pci_dev *dev); /* Device woken up */
448 void (*shutdown) (struct pci_dev *dev);
449 struct pci_error_handlers *err_handler;
450 struct device_driver driver;
451 struct pci_dynids dynids;
452};
453
454#define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
455
456/**
457 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
458 * @_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 */
463#define DEFINE_PCI_DEVICE_TABLE(_table) \
464 const struct pci_device_id _table[] __devinitconst
465
466/**
467 * 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
485 * specific PCI class. The vendor, device, subvendor, and subdevice
486 * 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
493/**
494 * PCI_VDEVICE - macro used to describe a specific pci device in short form
495 * @vendor: the vendor name
496 * @device: the 16 bit PCI Device ID
497 *
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
508/* 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 */
516/* Some device drivers need know if pci is initiated */
517extern int no_pci_devices(void);
518
519void pcibios_fixup_bus(struct pci_bus *);
520int __must_check pcibios_enable_device(struct pci_dev *, int mask);
521char *pcibios_setup(char *str);
522
523/* Used only when drivers/pci/setup.c is used */
524void pcibios_align_resource(void *, struct resource *, resource_size_t,
525 resource_size_t);
526void 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);
531void pci_bus_add_devices(const struct pci_bus *bus);
532struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
533 struct pci_ops *ops, void *sysdata);
534static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
535 void *sysdata)
536{
537 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;
542}
543struct 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);
547struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
548 const char *name,
549 struct hotplug_slot *hotplug);
550void pci_destroy_slot(struct pci_slot *slot);
551void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
552int pci_scan_slot(struct pci_bus *bus, int devfn);
553struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
554void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
555unsigned int pci_scan_child_bus(struct pci_bus *bus);
556int __must_check pci_bus_add_device(struct pci_dev *dev);
557void pci_read_bridge_bases(struct pci_bus *child);
558struct resource *pci_find_parent_resource(const struct pci_dev *dev,
559 struct resource *res);
560u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
561int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
562u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
563extern 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);
567extern void pci_stop_bus_device(struct pci_dev *dev);
568void pci_setup_cardbus(struct pci_bus *bus);
569extern void pci_sort_breadthfirst(void);
570
571/* Generic PCI functions exported to card drivers */
572
573#ifdef CONFIG_PCI_LEGACY
574struct pci_dev __deprecated *pci_find_device(unsigned int vendor,
575 unsigned int device,
576 struct pci_dev *from);
577struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
578 unsigned int devfn);
579#endif /* CONFIG_PCI_LEGACY */
580
581enum 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);
588int 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);
593struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
594
595struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
596 struct pci_dev *from);
597struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
598 unsigned int ss_vendor, unsigned int ss_device,
599 struct pci_dev *from);
600struct 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);
603int pci_dev_present(const struct pci_device_id *ids);
604
605int 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);
617
618static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
619{
620 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
621}
622static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
623{
624 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
625}
626static inline int pci_read_config_dword(struct pci_dev *dev, int where,
627 u32 *val)
628{
629 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
630}
631static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
632{
633 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
634}
635static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
636{
637 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
638}
639static inline int pci_write_config_dword(struct pci_dev *dev, int where,
640 u32 val)
641{
642 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
643}
644
645int __must_check pci_enable_device(struct pci_dev *dev);
646int __must_check pci_enable_device_io(struct pci_dev *dev);
647int __must_check pci_enable_device_mem(struct pci_dev *dev);
648int __must_check pci_reenable_device(struct pci_dev *);
649int __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
657void pci_disable_device(struct pci_dev *dev);
658void pci_set_master(struct pci_dev *dev);
659void pci_clear_master(struct pci_dev *dev);
660int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
661#define HAVE_PCI_SET_MWI
662int __must_check pci_set_mwi(struct pci_dev *dev);
663int pci_try_set_mwi(struct pci_dev *dev);
664void pci_clear_mwi(struct pci_dev *dev);
665void pci_intx(struct pci_dev *dev, int enable);
666void pci_msi_off(struct pci_dev *dev);
667int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
668int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
669int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
670int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
671int 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);
674int pcie_get_readrq(struct pci_dev *dev);
675int pcie_set_readrq(struct pci_dev *dev, int rq);
676int pci_reset_function(struct pci_dev *dev);
677int pci_execute_reset_function(struct pci_dev *dev);
678void pci_update_resource(struct pci_dev *dev, int resno);
679int __must_check pci_assign_resource(struct pci_dev *dev, int i);
680int pci_select_bars(struct pci_dev *dev, unsigned long flags);
681
682/* ROM control related routines */
683int pci_enable_rom(struct pci_dev *pdev);
684void pci_disable_rom(struct pci_dev *pdev);
685void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
686void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
687size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
688
689/* Power management related routines */
690int pci_save_state(struct pci_dev *dev);
691int pci_restore_state(struct pci_dev *dev);
692int 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);
694bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
695void pci_pme_active(struct pci_dev *dev, bool enable);
696int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable);
697int pci_wake_from_d3(struct pci_dev *dev, bool enable);
698pci_power_t pci_target_state(struct pci_dev *dev);
699int pci_prepare_to_sleep(struct pci_dev *dev);
700int pci_back_from_sleep(struct pci_dev *dev);
701
702/* Functions for PCI Hotplug drivers to use */
703int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
704
705/* 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);
708int pci_vpd_truncate(struct pci_dev *dev, size_t size);
709
710/* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
711void pci_bus_assign_resources(const 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 *);
717int pci_enable_resources(struct pci_dev *, int mask);
718void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
719 int (*)(struct pci_dev *, u8, u8));
720#define HAVE_PCI_REQ_REGIONS 2
721int __must_check pci_request_regions(struct pci_dev *, const char *);
722int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
723void pci_release_regions(struct pci_dev *);
724int __must_check pci_request_region(struct pci_dev *, int, const char *);
725int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
726void pci_release_region(struct pci_dev *, int);
727int pci_request_selected_regions(struct pci_dev *, int, const char *);
728int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
729void pci_release_selected_regions(struct pci_dev *, int);
730
731/* drivers/pci/bus.c */
732int __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);
739void pci_enable_bridges(struct pci_bus *bus);
740
741/* Proper probing supporting hot-pluggable devices */
742int __must_check __pci_register_driver(struct pci_driver *, struct module *,
743 const char *mod_name);
744
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)
750
751void 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);
758
759void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
760 void *userdata);
761int pci_cfg_space_size_ext(struct pci_dev *dev);
762int pci_cfg_space_size(struct pci_dev *dev);
763unsigned char pci_bus_max_busnr(struct pci_bus *bus);
764
765/* 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
776enum 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
785struct msix_entry {
786 u32 vector; /* kernel uses to write allocated vector */
787 u16 entry; /* driver uses to specify entry, OS writes */
788};
789
790
791#ifndef CONFIG_PCI_MSI
792static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
793{
794 return -1;
795}
796
797static inline void pci_msi_shutdown(struct pci_dev *dev)
798{ }
799static inline void pci_disable_msi(struct pci_dev *dev)
800{ }
801
802static inline int pci_msix_table_size(struct pci_dev *dev)
803{
804 return 0;
805}
806static inline int pci_enable_msix(struct pci_dev *dev,
807 struct msix_entry *entries, int nvec)
808{
809 return -1;
810}
811
812static inline void pci_msix_shutdown(struct pci_dev *dev)
813{ }
814static inline void pci_disable_msix(struct pci_dev *dev)
815{ }
816
817static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
818{ }
819
820static inline void pci_restore_msi_state(struct pci_dev *dev)
821{ }
822static inline int pci_msi_enabled(void)
823{
824 return 0;
825}
826#else
827extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
828extern void pci_msi_shutdown(struct pci_dev *dev);
829extern void pci_disable_msi(struct pci_dev *dev);
830extern int pci_msix_table_size(struct pci_dev *dev);
831extern int pci_enable_msix(struct pci_dev *dev,
832 struct msix_entry *entries, int nvec);
833extern void pci_msix_shutdown(struct pci_dev *dev);
834extern void pci_disable_msix(struct pci_dev *dev);
835extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
836extern void pci_restore_msi_state(struct pci_dev *dev);
837extern int pci_msi_enabled(void);
838#endif
839
840#ifndef CONFIG_PCIEASPM
841static inline int pcie_aspm_enabled(void)
842{
843 return 0;
844}
845#else
846extern int pcie_aspm_enabled(void);
847#endif
848
849#define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1)
850
851#ifdef CONFIG_HT_IRQ
852/* The functions a driver should call */
853int ht_create_irq(struct pci_dev *dev, int idx);
854void ht_destroy_irq(unsigned int irq);
855#endif /* CONFIG_HT_IRQ */
856
857extern void pci_block_user_cfg_access(struct pci_dev *dev);
858extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
859
860/*
861 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
862 * a PCI domain is defined to be a set of PCI busses which share
863 * configuration space.
864 */
865#ifdef CONFIG_PCI_DOMAINS
866extern int pci_domains_supported;
867#else
868enum { pci_domains_supported = 0 };
869static inline int pci_domain_nr(struct pci_bus *bus)
870{
871 return 0;
872}
873
874static inline int pci_proc_domain(struct pci_bus *bus)
875{
876 return 0;
877}
878#endif /* CONFIG_PCI_DOMAINS */
879
880#else /* CONFIG_PCI is not enabled */
881
882/*
883 * If the system does not have PCI, clearly these return errors. Define
884 * these as simple inline functions to avoid hair in drivers.
885 */
886
887#define _PCI_NOP(o, s, t) \
888 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
889 int where, t val) \
890 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
891
892#define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
893 _PCI_NOP(o, word, u16 x) \
894 _PCI_NOP(o, dword, u32 x)
895_PCI_NOP_ALL(read, *)
896_PCI_NOP_ALL(write,)
897
898static inline struct pci_dev *pci_find_device(unsigned int vendor,
899 unsigned int device,
900 struct pci_dev *from)
901{
902 return NULL;
903}
904
905static inline struct pci_dev *pci_find_slot(unsigned int bus,
906 unsigned int devfn)
907{
908 return NULL;
909}
910
911static inline struct pci_dev *pci_get_device(unsigned int vendor,
912 unsigned int device,
913 struct pci_dev *from)
914{
915 return NULL;
916}
917
918static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
919 unsigned int device,
920 unsigned int ss_vendor,
921 unsigned int ss_device,
922 struct pci_dev *from)
923{
924 return NULL;
925}
926
927static inline struct pci_dev *pci_get_class(unsigned int class,
928 struct pci_dev *from)
929{
930 return NULL;
931}
932
933#define pci_dev_present(ids) (0)
934#define no_pci_devices() (1)
935#define pci_dev_put(dev) do { } while (0)
936
937static inline void pci_set_master(struct pci_dev *dev)
938{ }
939
940static inline int pci_enable_device(struct pci_dev *dev)
941{
942 return -EIO;
943}
944
945static inline void pci_disable_device(struct pci_dev *dev)
946{ }
947
948static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
949{
950 return -EIO;
951}
952
953static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
954{
955 return -EIO;
956}
957
958static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
959 unsigned int size)
960{
961 return -EIO;
962}
963
964static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
965 unsigned long mask)
966{
967 return -EIO;
968}
969
970static inline int pci_assign_resource(struct pci_dev *dev, int i)
971{
972 return -EBUSY;
973}
974
975static inline int __pci_register_driver(struct pci_driver *drv,
976 struct module *owner)
977{
978 return 0;
979}
980
981static inline int pci_register_driver(struct pci_driver *drv)
982{
983 return 0;
984}
985
986static inline void pci_unregister_driver(struct pci_driver *drv)
987{ }
988
989static inline int pci_find_capability(struct pci_dev *dev, int cap)
990{
991 return 0;
992}
993
994static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
995 int cap)
996{
997 return 0;
998}
999
1000static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
1001{
1002 return 0;
1003}
1004
1005/* Power management related routines */
1006static inline int pci_save_state(struct pci_dev *dev)
1007{
1008 return 0;
1009}
1010
1011static inline int pci_restore_state(struct pci_dev *dev)
1012{
1013 return 0;
1014}
1015
1016static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1017{
1018 return 0;
1019}
1020
1021static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1022 pm_message_t state)
1023{
1024 return PCI_D0;
1025}
1026
1027static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1028 int enable)
1029{
1030 return 0;
1031}
1032
1033static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1034{
1035 return -EIO;
1036}
1037
1038static inline void pci_release_regions(struct pci_dev *dev)
1039{ }
1040
1041#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
1042
1043static inline void pci_block_user_cfg_access(struct pci_dev *dev)
1044{ }
1045
1046static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
1047{ }
1048
1049static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1050{ return NULL; }
1051
1052static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1053 unsigned int devfn)
1054{ return NULL; }
1055
1056static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
1057 unsigned int devfn)
1058{ return NULL; }
1059
1060#endif /* CONFIG_PCI */
1061
1062/* Include architecture-dependent settings and functions */
1063
1064#include <asm/pci.h>
1065
1066/* these helpers provide future and backwards compatibility
1067 * for accessing popular PCI BAR info */
1068#define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1069#define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1070#define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
1071#define pci_resource_len(dev,bar) \
1072 ((pci_resource_start((dev), (bar)) == 0 && \
1073 pci_resource_end((dev), (bar)) == \
1074 pci_resource_start((dev), (bar))) ? 0 : \
1075 \
1076 (pci_resource_end((dev), (bar)) - \
1077 pci_resource_start((dev), (bar)) + 1))
1078
1079/* Similar to the helpers above, these manipulate per-pci_dev
1080 * driver-specific data. They are really just a wrapper around
1081 * the generic device structure functions of these calls.
1082 */
1083static inline void *pci_get_drvdata(struct pci_dev *pdev)
1084{
1085 return dev_get_drvdata(&pdev->dev);
1086}
1087
1088static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
1089{
1090 dev_set_drvdata(&pdev->dev, data);
1091}
1092
1093/* If you want to know what to call your pci_dev, ask this function.
1094 * Again, it's a wrapper around the generic device.
1095 */
1096static inline const char *pci_name(struct pci_dev *pdev)
1097{
1098 return dev_name(&pdev->dev);
1099}
1100
1101
1102/* Some archs don't want to expose struct resource to userland as-is
1103 * in sysfs and /proc
1104 */
1105#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
1106static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
1107 const struct resource *rsrc, resource_size_t *start,
1108 resource_size_t *end)
1109{
1110 *start = rsrc->start;
1111 *end = rsrc->end;
1112}
1113#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1114
1115
1116/*
1117 * The world is not perfect and supplies us with broken PCI devices.
1118 * For at least a part of these bugs we need a work-around, so both
1119 * generic (drivers/pci/quirks.c) and per-architecture code can define
1120 * fixup hooks to be called for particular buggy devices.
1121 */
1122
1123struct pci_fixup {
1124 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
1125 void (*hook)(struct pci_dev *dev);
1126};
1127
1128enum pci_fixup_pass {
1129 pci_fixup_early, /* Before probing BARs */
1130 pci_fixup_header, /* After reading configuration header */
1131 pci_fixup_final, /* Final phase of device fixups */
1132 pci_fixup_enable, /* pci_enable_device() time */
1133 pci_fixup_resume, /* pci_device_resume() */
1134 pci_fixup_suspend, /* pci_device_suspend */
1135 pci_fixup_resume_early, /* pci_device_resume_early() */
1136};
1137
1138/* Anonymous variables would be nice... */
1139#define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
1140 static const struct pci_fixup __pci_fixup_##name __used \
1141 __attribute__((__section__(#section))) = { vendor, device, hook };
1142#define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1143 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1144 vendor##device##hook, vendor, device, hook)
1145#define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1146 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1147 vendor##device##hook, vendor, device, hook)
1148#define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1149 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1150 vendor##device##hook, vendor, device, hook)
1151#define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1152 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1153 vendor##device##hook, vendor, device, hook)
1154#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1155 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1156 resume##vendor##device##hook, vendor, device, hook)
1157#define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1158 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1159 resume_early##vendor##device##hook, vendor, device, hook)
1160#define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1161 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1162 suspend##vendor##device##hook, vendor, device, hook)
1163
1164
1165void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1166
1167void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
1168void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1169void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
1170int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
1171int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
1172 const char *name);
1173void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
1174
1175extern int pci_pci_problems;
1176#define PCIPCI_FAIL 1 /* No PCI PCI DMA */
1177#define PCIPCI_TRITON 2
1178#define PCIPCI_NATOMA 4
1179#define PCIPCI_VIAETBF 8
1180#define PCIPCI_VSFX 16
1181#define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1182#define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
1183
1184extern unsigned long pci_cardbus_io_size;
1185extern unsigned long pci_cardbus_mem_size;
1186
1187int pcibios_add_platform_entries(struct pci_dev *dev);
1188void pcibios_disable_device(struct pci_dev *dev);
1189int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1190 enum pcie_reset_state state);
1191
1192#ifdef CONFIG_PCI_MMCONFIG
1193extern void __init pci_mmcfg_early_init(void);
1194extern void __init pci_mmcfg_late_init(void);
1195#else
1196static inline void pci_mmcfg_early_init(void) { }
1197static inline void pci_mmcfg_late_init(void) { }
1198#endif
1199
1200int pci_ext_cfg_avail(struct pci_dev *dev);
1201
1202void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1203
1204#endif /* __KERNEL__ */
1205#endif /* LINUX_PCI_H */
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