4 * PCI defines and function prototypes
5 * Copyright 1994, Drew Eckhardt
6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
8 * For more information, please consult the following manuals (look at
9 * http://www.pcisig.com/ for how to get them):
11 * PCI BIOS Specification
12 * PCI Local Bus Specification
13 * PCI to PCI Bridge Specification
14 * PCI System Design Guide
20 #include <linux/pci_regs.h> /* The pci register defines */
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:
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)
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. */
43 #include <linux/mod_devicetable.h>
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>
55 #include <linux/irqreturn.h>
57 /* Include the ID list */
58 #include <linux/pci_ids.h>
60 /* pci_slot represents a physical slot */
62 struct pci_bus *bus; /* The bus this slot is on */
63 struct list_head list; /* node in list of slots on this bus */
64 struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */
65 unsigned char number; /* PCI_SLOT(pci_dev->devfn) */
69 static inline const char *pci_slot_name(const struct pci_slot *slot)
71 return kobject_name(&slot->kobj);
74 /* File state for mmap()s on /proc/bus/pci/X/Y */
80 /* This defines the direction arg to the DMA mapping routines. */
81 #define PCI_DMA_BIDIRECTIONAL 0
82 #define PCI_DMA_TODEVICE 1
83 #define PCI_DMA_FROMDEVICE 2
84 #define PCI_DMA_NONE 3
87 * For PCI devices, the region numbers are assigned this way:
90 /* #0-5: standard PCI resources */
92 PCI_STD_RESOURCE_END = 5,
94 /* #6: expansion ROM resource */
97 /* device specific resources */
100 PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
103 /* resources assigned to buses behind the bridge */
104 #define PCI_BRIDGE_RESOURCE_NUM 4
106 PCI_BRIDGE_RESOURCES,
107 PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
108 PCI_BRIDGE_RESOURCE_NUM - 1,
110 /* total resources associated with a PCI device */
113 /* preserve this for compatibility */
114 DEVICE_COUNT_RESOURCE
117 typedef int __bitwise pci_power_t;
119 #define PCI_D0 ((pci_power_t __force) 0)
120 #define PCI_D1 ((pci_power_t __force) 1)
121 #define PCI_D2 ((pci_power_t __force) 2)
122 #define PCI_D3hot ((pci_power_t __force) 3)
123 #define PCI_D3cold ((pci_power_t __force) 4)
124 #define PCI_UNKNOWN ((pci_power_t __force) 5)
125 #define PCI_POWER_ERROR ((pci_power_t __force) -1)
127 /* Remember to update this when the list above changes! */
128 extern const char *pci_power_names[];
130 static inline const char *pci_power_name(pci_power_t state)
132 return pci_power_names[1 + (int) state];
135 #define PCI_PM_D2_DELAY 200
136 #define PCI_PM_D3_WAIT 10
137 #define PCI_PM_BUS_WAIT 50
139 /** The pci_channel state describes connectivity between the CPU and
140 * the pci device. If some PCI bus between here and the pci device
141 * has crashed or locked up, this info is reflected here.
143 typedef unsigned int __bitwise pci_channel_state_t;
145 enum pci_channel_state {
146 /* I/O channel is in normal state */
147 pci_channel_io_normal = (__force pci_channel_state_t) 1,
149 /* I/O to channel is blocked */
150 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
152 /* PCI card is dead */
153 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
156 typedef unsigned int __bitwise pcie_reset_state_t;
158 enum pcie_reset_state {
159 /* Reset is NOT asserted (Use to deassert reset) */
160 pcie_deassert_reset = (__force pcie_reset_state_t) 1,
162 /* Use #PERST to reset PCI-E device */
163 pcie_warm_reset = (__force pcie_reset_state_t) 2,
165 /* Use PCI-E Hot Reset to reset device */
166 pcie_hot_reset = (__force pcie_reset_state_t) 3
169 typedef unsigned short __bitwise pci_dev_flags_t;
171 /* INTX_DISABLE in PCI_COMMAND register disables MSI
174 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1,
175 /* Device configuration is irrevocably lost if disabled into D3 */
176 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2,
179 enum pci_irq_reroute_variant {
180 INTEL_IRQ_REROUTE_VARIANT = 1,
181 MAX_IRQ_REROUTE_VARIANTS = 3
184 typedef unsigned short __bitwise pci_bus_flags_t;
186 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
187 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
190 /* Based on the PCI Hotplug Spec, but some values are made up by us */
192 PCI_SPEED_33MHz = 0x00,
193 PCI_SPEED_66MHz = 0x01,
194 PCI_SPEED_66MHz_PCIX = 0x02,
195 PCI_SPEED_100MHz_PCIX = 0x03,
196 PCI_SPEED_133MHz_PCIX = 0x04,
197 PCI_SPEED_66MHz_PCIX_ECC = 0x05,
198 PCI_SPEED_100MHz_PCIX_ECC = 0x06,
199 PCI_SPEED_133MHz_PCIX_ECC = 0x07,
200 PCI_SPEED_66MHz_PCIX_266 = 0x09,
201 PCI_SPEED_100MHz_PCIX_266 = 0x0a,
202 PCI_SPEED_133MHz_PCIX_266 = 0x0b,
208 PCI_SPEED_66MHz_PCIX_533 = 0x11,
209 PCI_SPEED_100MHz_PCIX_533 = 0x12,
210 PCI_SPEED_133MHz_PCIX_533 = 0x13,
211 PCIE_SPEED_2_5GT = 0x14,
212 PCIE_SPEED_5_0GT = 0x15,
213 PCIE_SPEED_8_0GT = 0x16,
214 PCI_SPEED_UNKNOWN = 0xff,
217 struct pci_cap_saved_state {
218 struct hlist_node next;
223 struct pcie_link_state;
229 * The pci_dev structure is used to describe PCI devices.
232 struct list_head bus_list; /* node in per-bus list */
233 struct pci_bus *bus; /* bus this device is on */
234 struct pci_bus *subordinate; /* bus this device bridges to */
236 void *sysdata; /* hook for sys-specific extension */
237 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */
238 struct pci_slot *slot; /* Physical slot this device is in */
240 unsigned int devfn; /* encoded device & function index */
241 unsigned short vendor;
242 unsigned short device;
243 unsigned short subsystem_vendor;
244 unsigned short subsystem_device;
245 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
246 u8 revision; /* PCI revision, low byte of class word */
247 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
248 u8 pcie_cap; /* PCI-E capability offset */
249 u8 pcie_type; /* PCI-E device/port type */
250 u8 rom_base_reg; /* which config register controls the ROM */
251 u8 pin; /* which interrupt pin this device uses */
253 struct pci_driver *driver; /* which driver has allocated this device */
254 u64 dma_mask; /* Mask of the bits of bus address this
255 device implements. Normally this is
256 0xffffffff. You only need to change
257 this if your device has broken DMA
258 or supports 64-bit transfers. */
260 struct device_dma_parameters dma_parms;
262 pci_power_t current_state; /* Current operating state. In ACPI-speak,
263 this is D0-D3, D0 being fully functional,
265 int pm_cap; /* PM capability offset in the
266 configuration space */
267 unsigned int pme_support:5; /* Bitmask of states from which PME#
269 unsigned int pme_interrupt:1;
270 unsigned int d1_support:1; /* Low power state D1 is supported */
271 unsigned int d2_support:1; /* Low power state D2 is supported */
272 unsigned int no_d1d2:1; /* Only allow D0 and D3 */
273 unsigned int mmio_always_on:1; /* disallow turning off io/mem
274 decoding during bar sizing */
275 unsigned int wakeup_prepared:1;
276 unsigned int d3_delay; /* D3->D0 transition time in ms */
278 #ifdef CONFIG_PCIEASPM
279 struct pcie_link_state *link_state; /* ASPM link state. */
282 pci_channel_state_t error_state; /* current connectivity state */
283 struct device dev; /* Generic device interface */
285 int cfg_size; /* Size of configuration space */
288 * Instead of touching interrupt line and base address registers
289 * directly, use the values stored here. They might be different!
292 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
293 resource_size_t fw_addr[DEVICE_COUNT_RESOURCE]; /* FW-assigned addr */
295 /* These fields are used by common fixups */
296 unsigned int transparent:1; /* Transparent PCI bridge */
297 unsigned int multifunction:1;/* Part of multi-function device */
298 /* keep track of device state */
299 unsigned int is_added:1;
300 unsigned int is_busmaster:1; /* device is busmaster */
301 unsigned int no_msi:1; /* device may not use msi */
302 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
303 unsigned int broken_parity_status:1; /* Device generates false positive parity */
304 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */
305 unsigned int msi_enabled:1;
306 unsigned int msix_enabled:1;
307 unsigned int ari_enabled:1; /* ARI forwarding */
308 unsigned int is_managed:1;
309 unsigned int is_pcie:1; /* Obsolete. Will be removed.
310 Use pci_is_pcie() instead */
311 unsigned int needs_freset:1; /* Dev requires fundamental reset */
312 unsigned int state_saved:1;
313 unsigned int is_physfn:1;
314 unsigned int is_virtfn:1;
315 unsigned int reset_fn:1;
316 unsigned int is_hotplug_bridge:1;
317 unsigned int __aer_firmware_first_valid:1;
318 unsigned int __aer_firmware_first:1;
319 pci_dev_flags_t dev_flags;
320 atomic_t enable_cnt; /* pci_enable_device has been called */
322 u32 saved_config_space[16]; /* config space saved at suspend time */
323 struct hlist_head saved_cap_space;
324 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */
325 int rom_attr_enabled; /* has display of the rom attribute been enabled? */
326 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
327 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
328 #ifdef CONFIG_PCI_MSI
329 struct list_head msi_list;
332 #ifdef CONFIG_PCI_IOV
334 struct pci_sriov *sriov; /* SR-IOV capability related */
335 struct pci_dev *physfn; /* the PF this VF is associated with */
337 struct pci_ats *ats; /* Address Translation Service */
341 static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
343 #ifdef CONFIG_PCI_IOV
351 extern struct pci_dev *alloc_pci_dev(void);
353 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)
354 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
355 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
357 static inline int pci_channel_offline(struct pci_dev *pdev)
359 return (pdev->error_state != pci_channel_io_normal);
362 static inline struct pci_cap_saved_state *pci_find_saved_cap(
363 struct pci_dev *pci_dev, char cap)
365 struct pci_cap_saved_state *tmp;
366 struct hlist_node *pos;
368 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
369 if (tmp->cap_nr == cap)
375 static inline void pci_add_saved_cap(struct pci_dev *pci_dev,
376 struct pci_cap_saved_state *new_cap)
378 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space);
382 * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond
383 * to P2P or CardBus bridge windows) go in a table. Additional ones (for
384 * buses below host bridges or subtractive decode bridges) go in the list.
385 * Use pci_bus_for_each_resource() to iterate through all the resources.
389 * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly
390 * and there's no way to program the bridge with the details of the window.
391 * This does not apply to ACPI _CRS windows, even with the _DEC subtractive-
392 * decode bit set, because they are explicit and can be programmed with _SRS.
394 #define PCI_SUBTRACTIVE_DECODE 0x1
396 struct pci_bus_resource {
397 struct list_head list;
398 struct resource *res;
402 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
405 struct list_head node; /* node in list of buses */
406 struct pci_bus *parent; /* parent bus this bridge is on */
407 struct list_head children; /* list of child buses */
408 struct list_head devices; /* list of devices on this bus */
409 struct pci_dev *self; /* bridge device as seen by parent */
410 struct list_head slots; /* list of slots on this bus */
411 struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
412 struct list_head resources; /* address space routed to this bus */
414 struct pci_ops *ops; /* configuration access functions */
415 void *sysdata; /* hook for sys-specific extension */
416 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */
418 unsigned char number; /* bus number */
419 unsigned char primary; /* number of primary bridge */
420 unsigned char secondary; /* number of secondary bridge */
421 unsigned char subordinate; /* max number of subordinate buses */
422 unsigned char max_bus_speed; /* enum pci_bus_speed */
423 unsigned char cur_bus_speed; /* enum pci_bus_speed */
427 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */
428 pci_bus_flags_t bus_flags; /* Inherited by child busses */
429 struct device *bridge;
431 struct bin_attribute *legacy_io; /* legacy I/O for this bus */
432 struct bin_attribute *legacy_mem; /* legacy mem */
433 unsigned int is_added:1;
436 #define pci_bus_b(n) list_entry(n, struct pci_bus, node)
437 #define to_pci_bus(n) container_of(n, struct pci_bus, dev)
440 * Returns true if the pci bus is root (behind host-pci bridge),
443 static inline bool pci_is_root_bus(struct pci_bus *pbus)
445 return !(pbus->parent);
448 #ifdef CONFIG_PCI_MSI
449 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
451 return pci_dev->msi_enabled || pci_dev->msix_enabled;
454 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
458 * Error values that may be returned by PCI functions.
460 #define PCIBIOS_SUCCESSFUL 0x00
461 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
462 #define PCIBIOS_BAD_VENDOR_ID 0x83
463 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
464 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
465 #define PCIBIOS_SET_FAILED 0x88
466 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
468 /* Low-level architecture-dependent routines */
471 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
472 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
476 * ACPI needs to be able to access PCI config space before we've done a
477 * PCI bus scan and created pci_bus structures.
479 extern int raw_pci_read(unsigned int domain, unsigned int bus,
480 unsigned int devfn, int reg, int len, u32 *val);
481 extern int raw_pci_write(unsigned int domain, unsigned int bus,
482 unsigned int devfn, int reg, int len, u32 val);
484 struct pci_bus_region {
485 resource_size_t start;
490 spinlock_t lock; /* protects list, index */
491 struct list_head list; /* for IDs added at runtime */
494 /* ---------------------------------------------------------------- */
495 /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
496 * a set of callbacks in struct pci_error_handlers, then that device driver
497 * will be notified of PCI bus errors, and will be driven to recovery
498 * when an error occurs.
501 typedef unsigned int __bitwise pci_ers_result_t;
503 enum pci_ers_result {
504 /* no result/none/not supported in device driver */
505 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
507 /* Device driver can recover without slot reset */
508 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
510 /* Device driver wants slot to be reset. */
511 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
513 /* Device has completely failed, is unrecoverable */
514 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
516 /* Device driver is fully recovered and operational */
517 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
520 /* PCI bus error event callbacks */
521 struct pci_error_handlers {
522 /* PCI bus error detected on this device */
523 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
524 enum pci_channel_state error);
526 /* MMIO has been re-enabled, but not DMA */
527 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
529 /* PCI Express link has been reset */
530 pci_ers_result_t (*link_reset)(struct pci_dev *dev);
532 /* PCI slot has been reset */
533 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
535 /* Device driver may resume normal operations */
536 void (*resume)(struct pci_dev *dev);
539 /* ---------------------------------------------------------------- */
543 struct list_head node;
545 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */
546 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
547 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
548 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */
549 int (*suspend_late) (struct pci_dev *dev, pm_message_t state);
550 int (*resume_early) (struct pci_dev *dev);
551 int (*resume) (struct pci_dev *dev); /* Device woken up */
552 void (*shutdown) (struct pci_dev *dev);
553 struct pci_error_handlers *err_handler;
554 struct device_driver driver;
555 struct pci_dynids dynids;
558 #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
561 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table
562 * @_table: device table name
564 * This macro is used to create a struct pci_device_id array (a device table)
565 * in a generic manner.
567 #define DEFINE_PCI_DEVICE_TABLE(_table) \
568 const struct pci_device_id _table[] __devinitconst
571 * PCI_DEVICE - macro used to describe a specific pci device
572 * @vend: the 16 bit PCI Vendor ID
573 * @dev: the 16 bit PCI Device ID
575 * This macro is used to create a struct pci_device_id that matches a
576 * specific device. The subvendor and subdevice fields will be set to
579 #define PCI_DEVICE(vend,dev) \
580 .vendor = (vend), .device = (dev), \
581 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
584 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class
585 * @dev_class: the class, subclass, prog-if triple for this device
586 * @dev_class_mask: the class mask for this device
588 * This macro is used to create a struct pci_device_id that matches a
589 * specific PCI class. The vendor, device, subvendor, and subdevice
590 * fields will be set to PCI_ANY_ID.
592 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
593 .class = (dev_class), .class_mask = (dev_class_mask), \
594 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
595 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
598 * PCI_VDEVICE - macro used to describe a specific pci device in short form
599 * @vendor: the vendor name
600 * @device: the 16 bit PCI Device ID
602 * This macro is used to create a struct pci_device_id that matches a
603 * specific PCI device. The subvendor, and subdevice fields will be set
604 * to PCI_ANY_ID. The macro allows the next field to follow as the device
608 #define PCI_VDEVICE(vendor, device) \
609 PCI_VENDOR_ID_##vendor, (device), \
610 PCI_ANY_ID, PCI_ANY_ID, 0, 0
612 /* these external functions are only available when PCI support is enabled */
615 extern struct bus_type pci_bus_type;
617 /* Do NOT directly access these two variables, unless you are arch specific pci
618 * code, or pci core code. */
619 extern struct list_head pci_root_buses; /* list of all known PCI buses */
620 /* Some device drivers need know if pci is initiated */
621 extern int no_pci_devices(void);
623 void pcibios_fixup_bus(struct pci_bus *);
624 int __must_check pcibios_enable_device(struct pci_dev *, int mask);
625 char *pcibios_setup(char *str);
627 /* Used only when drivers/pci/setup.c is used */
628 resource_size_t pcibios_align_resource(void *, const struct resource *,
631 void pcibios_update_irq(struct pci_dev *, int irq);
633 /* Weak but can be overriden by arch */
634 void pci_fixup_cardbus(struct pci_bus *);
636 /* Generic PCI functions used internally */
638 void pcibios_scan_specific_bus(int busn);
639 extern struct pci_bus *pci_find_bus(int domain, int busnr);
640 void pci_bus_add_devices(const struct pci_bus *bus);
641 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus,
642 struct pci_ops *ops, void *sysdata);
643 static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops,
646 struct pci_bus *root_bus;
647 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
649 pci_bus_add_devices(root_bus);
652 struct pci_bus *pci_create_bus(struct device *parent, int bus,
653 struct pci_ops *ops, void *sysdata);
654 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
656 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
657 struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
659 struct hotplug_slot *hotplug);
660 void pci_destroy_slot(struct pci_slot *slot);
661 void pci_renumber_slot(struct pci_slot *slot, int slot_nr);
662 int pci_scan_slot(struct pci_bus *bus, int devfn);
663 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
664 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
665 unsigned int pci_scan_child_bus(struct pci_bus *bus);
666 int __must_check pci_bus_add_device(struct pci_dev *dev);
667 void pci_read_bridge_bases(struct pci_bus *child);
668 struct resource *pci_find_parent_resource(const struct pci_dev *dev,
669 struct resource *res);
670 u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin);
671 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
672 u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
673 extern struct pci_dev *pci_dev_get(struct pci_dev *dev);
674 extern void pci_dev_put(struct pci_dev *dev);
675 extern void pci_remove_bus(struct pci_bus *b);
676 extern void pci_remove_bus_device(struct pci_dev *dev);
677 extern void pci_stop_bus_device(struct pci_dev *dev);
678 void pci_setup_cardbus(struct pci_bus *bus);
679 extern void pci_sort_breadthfirst(void);
680 #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
681 #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
682 #define dev_num_vf(d) ((dev_is_pci(d) ? pci_num_vf(to_pci_dev(d)) : 0))
684 /* Generic PCI functions exported to card drivers */
686 enum pci_lost_interrupt_reason {
687 PCI_LOST_IRQ_NO_INFORMATION = 0,
688 PCI_LOST_IRQ_DISABLE_MSI,
689 PCI_LOST_IRQ_DISABLE_MSIX,
690 PCI_LOST_IRQ_DISABLE_ACPI,
692 enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
693 int pci_find_capability(struct pci_dev *dev, int cap);
694 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
695 int pci_find_ext_capability(struct pci_dev *dev, int cap);
696 int pci_bus_find_ext_capability(struct pci_bus *bus, unsigned int devfn,
698 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
699 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
700 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
702 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
703 struct pci_dev *from);
704 struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
705 unsigned int ss_vendor, unsigned int ss_device,
706 struct pci_dev *from);
707 struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
708 struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
710 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
713 return pci_get_domain_bus_and_slot(0, bus, devfn);
715 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
716 int pci_dev_present(const struct pci_device_id *ids);
718 int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
720 int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
721 int where, u16 *val);
722 int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
723 int where, u32 *val);
724 int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
726 int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
728 int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
730 struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);
732 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val)
734 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val);
736 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val)
738 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val);
740 static inline int pci_read_config_dword(struct pci_dev *dev, int where,
743 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val);
745 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val)
747 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val);
749 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val)
751 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val);
753 static inline int pci_write_config_dword(struct pci_dev *dev, int where,
756 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val);
759 int __must_check pci_enable_device(struct pci_dev *dev);
760 int __must_check pci_enable_device_io(struct pci_dev *dev);
761 int __must_check pci_enable_device_mem(struct pci_dev *dev);
762 int __must_check pci_reenable_device(struct pci_dev *);
763 int __must_check pcim_enable_device(struct pci_dev *pdev);
764 void pcim_pin_device(struct pci_dev *pdev);
766 static inline int pci_is_enabled(struct pci_dev *pdev)
768 return (atomic_read(&pdev->enable_cnt) > 0);
771 static inline int pci_is_managed(struct pci_dev *pdev)
773 return pdev->is_managed;
776 void pci_disable_device(struct pci_dev *dev);
777 void pci_set_master(struct pci_dev *dev);
778 void pci_clear_master(struct pci_dev *dev);
779 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
780 int pci_set_cacheline_size(struct pci_dev *dev);
781 #define HAVE_PCI_SET_MWI
782 int __must_check pci_set_mwi(struct pci_dev *dev);
783 int pci_try_set_mwi(struct pci_dev *dev);
784 void pci_clear_mwi(struct pci_dev *dev);
785 void pci_intx(struct pci_dev *dev, int enable);
786 void pci_msi_off(struct pci_dev *dev);
787 int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
788 int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
789 int pcix_get_max_mmrbc(struct pci_dev *dev);
790 int pcix_get_mmrbc(struct pci_dev *dev);
791 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
792 int pcie_get_readrq(struct pci_dev *dev);
793 int pcie_set_readrq(struct pci_dev *dev, int rq);
794 int __pci_reset_function(struct pci_dev *dev);
795 int pci_reset_function(struct pci_dev *dev);
796 void pci_update_resource(struct pci_dev *dev, int resno);
797 int __must_check pci_assign_resource(struct pci_dev *dev, int i);
798 int pci_select_bars(struct pci_dev *dev, unsigned long flags);
800 /* ROM control related routines */
801 int pci_enable_rom(struct pci_dev *pdev);
802 void pci_disable_rom(struct pci_dev *pdev);
803 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
804 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
805 size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
807 /* Power management related routines */
808 int pci_save_state(struct pci_dev *dev);
809 void pci_restore_state(struct pci_dev *dev);
810 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
811 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
812 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
813 bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
814 void pci_pme_active(struct pci_dev *dev, bool enable);
815 int __pci_enable_wake(struct pci_dev *dev, pci_power_t state,
816 bool runtime, bool enable);
817 int pci_wake_from_d3(struct pci_dev *dev, bool enable);
818 pci_power_t pci_target_state(struct pci_dev *dev);
819 int pci_prepare_to_sleep(struct pci_dev *dev);
820 int pci_back_from_sleep(struct pci_dev *dev);
821 bool pci_dev_run_wake(struct pci_dev *dev);
822 bool pci_check_pme_status(struct pci_dev *dev);
823 void pci_pme_wakeup_bus(struct pci_bus *bus);
825 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
828 return __pci_enable_wake(dev, state, false, enable);
831 /* For use by arch with custom probe code */
832 void set_pcie_port_type(struct pci_dev *pdev);
833 void set_pcie_hotplug_bridge(struct pci_dev *pdev);
835 /* Functions for PCI Hotplug drivers to use */
836 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
837 #ifdef CONFIG_HOTPLUG
838 unsigned int pci_rescan_bus(struct pci_bus *bus);
841 /* Vital product data routines */
842 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
843 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
844 int pci_vpd_truncate(struct pci_dev *dev, size_t size);
846 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
847 void pci_bus_assign_resources(const struct pci_bus *bus);
848 void pci_bus_size_bridges(struct pci_bus *bus);
849 int pci_claim_resource(struct pci_dev *, int);
850 void pci_assign_unassigned_resources(void);
851 void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
852 void pdev_enable_device(struct pci_dev *);
853 void pdev_sort_resources(struct pci_dev *, struct resource_list *);
854 int pci_enable_resources(struct pci_dev *, int mask);
855 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),
856 int (*)(struct pci_dev *, u8, u8));
857 #define HAVE_PCI_REQ_REGIONS 2
858 int __must_check pci_request_regions(struct pci_dev *, const char *);
859 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
860 void pci_release_regions(struct pci_dev *);
861 int __must_check pci_request_region(struct pci_dev *, int, const char *);
862 int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
863 void pci_release_region(struct pci_dev *, int);
864 int pci_request_selected_regions(struct pci_dev *, int, const char *);
865 int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
866 void pci_release_selected_regions(struct pci_dev *, int);
868 /* drivers/pci/bus.c */
869 void pci_bus_add_resource(struct pci_bus *bus, struct resource *res, unsigned int flags);
870 struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
871 void pci_bus_remove_resources(struct pci_bus *bus);
873 #define pci_bus_for_each_resource(bus, res, i) \
875 (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \
878 int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
879 struct resource *res, resource_size_t size,
880 resource_size_t align, resource_size_t min,
881 unsigned int type_mask,
882 resource_size_t (*alignf)(void *,
883 const struct resource *,
887 void pci_enable_bridges(struct pci_bus *bus);
889 /* Proper probing supporting hot-pluggable devices */
890 int __must_check __pci_register_driver(struct pci_driver *, struct module *,
891 const char *mod_name);
894 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded
896 #define pci_register_driver(driver) \
897 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
899 void pci_unregister_driver(struct pci_driver *dev);
900 void pci_remove_behind_bridge(struct pci_dev *dev);
901 struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
902 int pci_add_dynid(struct pci_driver *drv,
903 unsigned int vendor, unsigned int device,
904 unsigned int subvendor, unsigned int subdevice,
905 unsigned int class, unsigned int class_mask,
906 unsigned long driver_data);
907 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
908 struct pci_dev *dev);
909 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
912 void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
914 int pci_cfg_space_size_ext(struct pci_dev *dev);
915 int pci_cfg_space_size(struct pci_dev *dev);
916 unsigned char pci_bus_max_busnr(struct pci_bus *bus);
918 int pci_set_vga_state(struct pci_dev *pdev, bool decode,
919 unsigned int command_bits, bool change_bridge);
920 /* kmem_cache style wrapper around pci_alloc_consistent() */
922 #include <linux/pci-dma.h>
923 #include <linux/dmapool.h>
925 #define pci_pool dma_pool
926 #define pci_pool_create(name, pdev, size, align, allocation) \
927 dma_pool_create(name, &pdev->dev, size, align, allocation)
928 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
929 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
930 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
932 enum pci_dma_burst_strategy {
933 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible,
934 strategy_parameter is N/A */
935 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
937 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
938 strategy_parameter byte boundaries */
942 u32 vector; /* kernel uses to write allocated vector */
943 u16 entry; /* driver uses to specify entry, OS writes */
947 #ifndef CONFIG_PCI_MSI
948 static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec)
953 static inline void pci_msi_shutdown(struct pci_dev *dev)
955 static inline void pci_disable_msi(struct pci_dev *dev)
958 static inline int pci_msix_table_size(struct pci_dev *dev)
962 static inline int pci_enable_msix(struct pci_dev *dev,
963 struct msix_entry *entries, int nvec)
968 static inline void pci_msix_shutdown(struct pci_dev *dev)
970 static inline void pci_disable_msix(struct pci_dev *dev)
973 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev)
976 static inline void pci_restore_msi_state(struct pci_dev *dev)
978 static inline int pci_msi_enabled(void)
983 extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec);
984 extern void pci_msi_shutdown(struct pci_dev *dev);
985 extern void pci_disable_msi(struct pci_dev *dev);
986 extern int pci_msix_table_size(struct pci_dev *dev);
987 extern int pci_enable_msix(struct pci_dev *dev,
988 struct msix_entry *entries, int nvec);
989 extern void pci_msix_shutdown(struct pci_dev *dev);
990 extern void pci_disable_msix(struct pci_dev *dev);
991 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev);
992 extern void pci_restore_msi_state(struct pci_dev *dev);
993 extern int pci_msi_enabled(void);
996 #ifdef CONFIG_PCIEPORTBUS
997 extern bool pcie_ports_disabled;
998 extern bool pcie_ports_auto;
1000 #define pcie_ports_disabled true
1001 #define pcie_ports_auto false
1004 #ifndef CONFIG_PCIEASPM
1005 static inline int pcie_aspm_enabled(void) { return 0; }
1006 static inline bool pcie_aspm_support_enabled(void) { return false; }
1008 extern int pcie_aspm_enabled(void);
1009 extern bool pcie_aspm_support_enabled(void);
1012 #ifdef CONFIG_PCIEAER
1013 void pci_no_aer(void);
1014 bool pci_aer_available(void);
1016 static inline void pci_no_aer(void) { }
1017 static inline bool pci_aer_available(void) { return false; }
1020 #ifndef CONFIG_PCIE_ECRC
1021 static inline void pcie_set_ecrc_checking(struct pci_dev *dev)
1025 static inline void pcie_ecrc_get_policy(char *str) {};
1027 extern void pcie_set_ecrc_checking(struct pci_dev *dev);
1028 extern void pcie_ecrc_get_policy(char *str);
1031 #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1)
1033 #ifdef CONFIG_HT_IRQ
1034 /* The functions a driver should call */
1035 int ht_create_irq(struct pci_dev *dev, int idx);
1036 void ht_destroy_irq(unsigned int irq);
1037 #endif /* CONFIG_HT_IRQ */
1039 extern void pci_block_user_cfg_access(struct pci_dev *dev);
1040 extern void pci_unblock_user_cfg_access(struct pci_dev *dev);
1043 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
1044 * a PCI domain is defined to be a set of PCI busses which share
1045 * configuration space.
1047 #ifdef CONFIG_PCI_DOMAINS
1048 extern int pci_domains_supported;
1050 enum { pci_domains_supported = 0 };
1051 static inline int pci_domain_nr(struct pci_bus *bus)
1056 static inline int pci_proc_domain(struct pci_bus *bus)
1060 #endif /* CONFIG_PCI_DOMAINS */
1062 /* some architectures require additional setup to direct VGA traffic */
1063 typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
1064 unsigned int command_bits, bool change_bridge);
1065 extern void pci_register_set_vga_state(arch_set_vga_state_t func);
1067 #else /* CONFIG_PCI is not enabled */
1070 * If the system does not have PCI, clearly these return errors. Define
1071 * these as simple inline functions to avoid hair in drivers.
1074 #define _PCI_NOP(o, s, t) \
1075 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
1077 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
1079 #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
1080 _PCI_NOP(o, word, u16 x) \
1081 _PCI_NOP(o, dword, u32 x)
1082 _PCI_NOP_ALL(read, *)
1083 _PCI_NOP_ALL(write,)
1085 static inline struct pci_dev *pci_get_device(unsigned int vendor,
1086 unsigned int device,
1087 struct pci_dev *from)
1092 static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
1093 unsigned int device,
1094 unsigned int ss_vendor,
1095 unsigned int ss_device,
1096 struct pci_dev *from)
1101 static inline struct pci_dev *pci_get_class(unsigned int class,
1102 struct pci_dev *from)
1107 #define pci_dev_present(ids) (0)
1108 #define no_pci_devices() (1)
1109 #define pci_dev_put(dev) do { } while (0)
1111 static inline void pci_set_master(struct pci_dev *dev)
1114 static inline int pci_enable_device(struct pci_dev *dev)
1119 static inline void pci_disable_device(struct pci_dev *dev)
1122 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
1127 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
1132 static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
1138 static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
1144 static inline int pci_assign_resource(struct pci_dev *dev, int i)
1149 static inline int __pci_register_driver(struct pci_driver *drv,
1150 struct module *owner)
1155 static inline int pci_register_driver(struct pci_driver *drv)
1160 static inline void pci_unregister_driver(struct pci_driver *drv)
1163 static inline int pci_find_capability(struct pci_dev *dev, int cap)
1168 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
1174 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
1179 /* Power management related routines */
1180 static inline int pci_save_state(struct pci_dev *dev)
1185 static inline void pci_restore_state(struct pci_dev *dev)
1188 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1193 static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable)
1198 static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1204 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1210 static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1215 static inline void pci_release_regions(struct pci_dev *dev)
1218 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
1220 static inline void pci_block_user_cfg_access(struct pci_dev *dev)
1223 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev)
1226 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1229 static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1233 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus,
1237 static inline int pci_domain_nr(struct pci_bus *bus)
1240 #define dev_is_pci(d) (false)
1241 #define dev_is_pf(d) (false)
1242 #define dev_num_vf(d) (0)
1243 #endif /* CONFIG_PCI */
1245 /* Include architecture-dependent settings and functions */
1247 #include <asm/pci.h>
1249 #ifndef PCIBIOS_MAX_MEM_32
1250 #define PCIBIOS_MAX_MEM_32 (-1)
1253 /* these helpers provide future and backwards compatibility
1254 * for accessing popular PCI BAR info */
1255 #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1256 #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1257 #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
1258 #define pci_resource_len(dev,bar) \
1259 ((pci_resource_start((dev), (bar)) == 0 && \
1260 pci_resource_end((dev), (bar)) == \
1261 pci_resource_start((dev), (bar))) ? 0 : \
1263 (pci_resource_end((dev), (bar)) - \
1264 pci_resource_start((dev), (bar)) + 1))
1266 /* Similar to the helpers above, these manipulate per-pci_dev
1267 * driver-specific data. They are really just a wrapper around
1268 * the generic device structure functions of these calls.
1270 static inline void *pci_get_drvdata(struct pci_dev *pdev)
1272 return dev_get_drvdata(&pdev->dev);
1275 static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
1277 dev_set_drvdata(&pdev->dev, data);
1280 /* If you want to know what to call your pci_dev, ask this function.
1281 * Again, it's a wrapper around the generic device.
1283 static inline const char *pci_name(const struct pci_dev *pdev)
1285 return dev_name(&pdev->dev);
1289 /* Some archs don't want to expose struct resource to userland as-is
1290 * in sysfs and /proc
1292 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
1293 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
1294 const struct resource *rsrc, resource_size_t *start,
1295 resource_size_t *end)
1297 *start = rsrc->start;
1300 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1304 * The world is not perfect and supplies us with broken PCI devices.
1305 * For at least a part of these bugs we need a work-around, so both
1306 * generic (drivers/pci/quirks.c) and per-architecture code can define
1307 * fixup hooks to be called for particular buggy devices.
1311 u16 vendor, device; /* You can use PCI_ANY_ID here of course */
1312 void (*hook)(struct pci_dev *dev);
1315 enum pci_fixup_pass {
1316 pci_fixup_early, /* Before probing BARs */
1317 pci_fixup_header, /* After reading configuration header */
1318 pci_fixup_final, /* Final phase of device fixups */
1319 pci_fixup_enable, /* pci_enable_device() time */
1320 pci_fixup_resume, /* pci_device_resume() */
1321 pci_fixup_suspend, /* pci_device_suspend */
1322 pci_fixup_resume_early, /* pci_device_resume_early() */
1325 /* Anonymous variables would be nice... */
1326 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \
1327 static const struct pci_fixup __pci_fixup_##name __used \
1328 __attribute__((__section__(#section))) = { vendor, device, hook };
1329 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1330 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1331 vendor##device##hook, vendor, device, hook)
1332 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1333 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1334 vendor##device##hook, vendor, device, hook)
1335 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1336 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1337 vendor##device##hook, vendor, device, hook)
1338 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1339 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1340 vendor##device##hook, vendor, device, hook)
1341 #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1342 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1343 resume##vendor##device##hook, vendor, device, hook)
1344 #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1345 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1346 resume_early##vendor##device##hook, vendor, device, hook)
1347 #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1348 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1349 suspend##vendor##device##hook, vendor, device, hook)
1351 #ifdef CONFIG_PCI_QUIRKS
1352 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1354 static inline void pci_fixup_device(enum pci_fixup_pass pass,
1355 struct pci_dev *dev) {}
1358 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
1359 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1360 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
1361 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name);
1362 int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask,
1364 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask);
1366 extern int pci_pci_problems;
1367 #define PCIPCI_FAIL 1 /* No PCI PCI DMA */
1368 #define PCIPCI_TRITON 2
1369 #define PCIPCI_NATOMA 4
1370 #define PCIPCI_VIAETBF 8
1371 #define PCIPCI_VSFX 16
1372 #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1373 #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
1375 extern unsigned long pci_cardbus_io_size;
1376 extern unsigned long pci_cardbus_mem_size;
1377 extern u8 __devinitdata pci_dfl_cache_line_size;
1378 extern u8 pci_cache_line_size;
1380 extern unsigned long pci_hotplug_io_size;
1381 extern unsigned long pci_hotplug_mem_size;
1383 int pcibios_add_platform_entries(struct pci_dev *dev);
1384 void pcibios_disable_device(struct pci_dev *dev);
1385 int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1386 enum pcie_reset_state state);
1388 #ifdef CONFIG_PCI_MMCONFIG
1389 extern void __init pci_mmcfg_early_init(void);
1390 extern void __init pci_mmcfg_late_init(void);
1392 static inline void pci_mmcfg_early_init(void) { }
1393 static inline void pci_mmcfg_late_init(void) { }
1396 int pci_ext_cfg_avail(struct pci_dev *dev);
1398 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1400 #ifdef CONFIG_PCI_IOV
1401 extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
1402 extern void pci_disable_sriov(struct pci_dev *dev);
1403 extern irqreturn_t pci_sriov_migration(struct pci_dev *dev);
1404 extern int pci_num_vf(struct pci_dev *dev);
1406 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
1410 static inline void pci_disable_sriov(struct pci_dev *dev)
1413 static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev)
1417 static inline int pci_num_vf(struct pci_dev *dev)
1423 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)
1424 extern void pci_hp_create_module_link(struct pci_slot *pci_slot);
1425 extern void pci_hp_remove_module_link(struct pci_slot *pci_slot);
1429 * pci_pcie_cap - get the saved PCIe capability offset
1432 * PCIe capability offset is calculated at PCI device initialization
1433 * time and saved in the data structure. This function returns saved
1434 * PCIe capability offset. Using this instead of pci_find_capability()
1435 * reduces unnecessary search in the PCI configuration space. If you
1436 * need to calculate PCIe capability offset from raw device for some
1437 * reasons, please use pci_find_capability() instead.
1439 static inline int pci_pcie_cap(struct pci_dev *dev)
1441 return dev->pcie_cap;
1445 * pci_is_pcie - check if the PCI device is PCI Express capable
1448 * Retrun true if the PCI device is PCI Express capable, false otherwise.
1450 static inline bool pci_is_pcie(struct pci_dev *dev)
1452 return !!pci_pcie_cap(dev);
1455 void pci_request_acs(void);
1458 #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */
1459 #define PCI_VPD_LRDT_ID(x) (x | PCI_VPD_LRDT)
1461 /* Large Resource Data Type Tag Item Names */
1462 #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */
1463 #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */
1464 #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */
1466 #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING)
1467 #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA)
1468 #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)
1470 /* Small Resource Data Type Tag Item Names */
1471 #define PCI_VPD_STIN_END 0x78 /* End */
1473 #define PCI_VPD_SRDT_END PCI_VPD_STIN_END
1475 #define PCI_VPD_SRDT_TIN_MASK 0x78
1476 #define PCI_VPD_SRDT_LEN_MASK 0x07
1478 #define PCI_VPD_LRDT_TAG_SIZE 3
1479 #define PCI_VPD_SRDT_TAG_SIZE 1
1481 #define PCI_VPD_INFO_FLD_HDR_SIZE 3
1483 #define PCI_VPD_RO_KEYWORD_PARTNO "PN"
1484 #define PCI_VPD_RO_KEYWORD_MFR_ID "MN"
1485 #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0"
1486 #define PCI_VPD_RO_KEYWORD_CHKSUM "RV"
1489 * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
1490 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
1492 * Returns the extracted Large Resource Data Type length.
1494 static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
1496 return (u16)lrdt[1] + ((u16)lrdt[2] << 8);
1500 * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
1501 * @lrdt: Pointer to the beginning of the Small Resource Data Type tag
1503 * Returns the extracted Small Resource Data Type length.
1505 static inline u8 pci_vpd_srdt_size(const u8 *srdt)
1507 return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
1511 * pci_vpd_info_field_size - Extracts the information field length
1512 * @lrdt: Pointer to the beginning of an information field header
1514 * Returns the extracted information field length.
1516 static inline u8 pci_vpd_info_field_size(const u8 *info_field)
1518 return info_field[2];
1522 * pci_vpd_find_tag - Locates the Resource Data Type tag provided
1523 * @buf: Pointer to buffered vpd data
1524 * @off: The offset into the buffer at which to begin the search
1525 * @len: The length of the vpd buffer
1526 * @rdt: The Resource Data Type to search for
1528 * Returns the index where the Resource Data Type was found or
1529 * -ENOENT otherwise.
1531 int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt);
1534 * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
1535 * @buf: Pointer to buffered vpd data
1536 * @off: The offset into the buffer at which to begin the search
1537 * @len: The length of the buffer area, relative to off, in which to search
1538 * @kw: The keyword to search for
1540 * Returns the index where the information field keyword was found or
1541 * -ENOENT otherwise.
1543 int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
1544 unsigned int len, const char *kw);
1546 #endif /* __KERNEL__ */
1547 #endif /* LINUX_PCI_H */