1 /* SPDX-License-Identifier: GPL-2.0 */
5 * PCI defines and function prototypes
6 * Copyright 1994, Drew Eckhardt
7 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>
9 * For more information, please consult the following manuals (look at
10 * http://www.pcisig.com/ for how to get them):
12 * PCI BIOS Specification
13 * PCI Local Bus Specification
14 * PCI to PCI Bridge Specification
15 * PCI System Design Guide
21 #include <linux/mod_devicetable.h>
23 #include <linux/types.h>
24 #include <linux/init.h>
25 #include <linux/ioport.h>
26 #include <linux/list.h>
27 #include <linux/compiler.h>
28 #include <linux/errno.h>
29 #include <linux/kobject.h>
30 #include <linux/atomic.h>
31 #include <linux/device.h>
32 #include <linux/interrupt.h>
34 #include <linux/resource_ext.h>
35 #include <uapi/linux/pci.h>
37 #include <linux/pci_ids.h>
40 * The PCI interface treats multi-function devices as independent
41 * devices. The slot/function address of each device is encoded
42 * in a single byte as follows:
47 * PCI_DEVFN(), PCI_SLOT(), and PCI_FUNC() are defined in uapi/linux/pci.h.
48 * In the interest of not exposing interfaces to user-space unnecessarily,
49 * the following kernel-only defines are being added here.
51 #define PCI_DEVID(bus, devfn) ((((u16)(bus)) << 8) | (devfn))
52 /* return bus from PCI devid = ((u16)bus_number) << 8) | devfn */
53 #define PCI_BUS_NUM(x) (((x) >> 8) & 0xff)
55 /* pci_slot represents a physical slot */
57 struct pci_bus *bus; /* Bus this slot is on */
58 struct list_head list; /* Node in list of slots */
59 struct hotplug_slot *hotplug; /* Hotplug info (move here) */
60 unsigned char number; /* PCI_SLOT(pci_dev->devfn) */
64 static inline const char *pci_slot_name(const struct pci_slot *slot)
66 return kobject_name(&slot->kobj);
69 /* File state for mmap()s on /proc/bus/pci/X/Y */
75 /* For PCI devices, the region numbers are assigned this way: */
77 /* #0-5: standard PCI resources */
79 PCI_STD_RESOURCE_END = 5,
81 /* #6: expansion ROM resource */
84 /* Device-specific resources */
87 PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1,
90 /* Resources assigned to buses behind the bridge */
91 #define PCI_BRIDGE_RESOURCE_NUM 4
94 PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES +
95 PCI_BRIDGE_RESOURCE_NUM - 1,
97 /* Total resources associated with a PCI device */
100 /* Preserve this for compatibility */
101 DEVICE_COUNT_RESOURCE = PCI_NUM_RESOURCES,
105 * enum pci_interrupt_pin - PCI INTx interrupt values
106 * @PCI_INTERRUPT_UNKNOWN: Unknown or unassigned interrupt
107 * @PCI_INTERRUPT_INTA: PCI INTA pin
108 * @PCI_INTERRUPT_INTB: PCI INTB pin
109 * @PCI_INTERRUPT_INTC: PCI INTC pin
110 * @PCI_INTERRUPT_INTD: PCI INTD pin
112 * Corresponds to values for legacy PCI INTx interrupts, as can be found in the
113 * PCI_INTERRUPT_PIN register.
115 enum pci_interrupt_pin {
116 PCI_INTERRUPT_UNKNOWN,
123 /* The number of legacy PCI INTx interrupts */
124 #define PCI_NUM_INTX 4
127 * pci_power_t values must match the bits in the Capabilities PME_Support
128 * and Control/Status PowerState fields in the Power Management capability.
130 typedef int __bitwise pci_power_t;
132 #define PCI_D0 ((pci_power_t __force) 0)
133 #define PCI_D1 ((pci_power_t __force) 1)
134 #define PCI_D2 ((pci_power_t __force) 2)
135 #define PCI_D3hot ((pci_power_t __force) 3)
136 #define PCI_D3cold ((pci_power_t __force) 4)
137 #define PCI_UNKNOWN ((pci_power_t __force) 5)
138 #define PCI_POWER_ERROR ((pci_power_t __force) -1)
140 /* Remember to update this when the list above changes! */
141 extern const char *pci_power_names[];
143 static inline const char *pci_power_name(pci_power_t state)
145 return pci_power_names[1 + (__force int) state];
148 #define PCI_PM_D2_DELAY 200
149 #define PCI_PM_D3_WAIT 10
150 #define PCI_PM_D3COLD_WAIT 100
151 #define PCI_PM_BUS_WAIT 50
154 * The pci_channel state describes connectivity between the CPU and
155 * the PCI device. If some PCI bus between here and the PCI device
156 * has crashed or locked up, this info is reflected here.
158 typedef unsigned int __bitwise pci_channel_state_t;
160 enum pci_channel_state {
161 /* I/O channel is in normal state */
162 pci_channel_io_normal = (__force pci_channel_state_t) 1,
164 /* I/O to channel is blocked */
165 pci_channel_io_frozen = (__force pci_channel_state_t) 2,
167 /* PCI card is dead */
168 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
171 typedef unsigned int __bitwise pcie_reset_state_t;
173 enum pcie_reset_state {
174 /* Reset is NOT asserted (Use to deassert reset) */
175 pcie_deassert_reset = (__force pcie_reset_state_t) 1,
177 /* Use #PERST to reset PCIe device */
178 pcie_warm_reset = (__force pcie_reset_state_t) 2,
180 /* Use PCIe Hot Reset to reset device */
181 pcie_hot_reset = (__force pcie_reset_state_t) 3
184 typedef unsigned short __bitwise pci_dev_flags_t;
186 /* INTX_DISABLE in PCI_COMMAND register disables MSI too */
187 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) (1 << 0),
188 /* Device configuration is irrevocably lost if disabled into D3 */
189 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) (1 << 1),
190 /* Provide indication device is assigned by a Virtual Machine Manager */
191 PCI_DEV_FLAGS_ASSIGNED = (__force pci_dev_flags_t) (1 << 2),
192 /* Flag for quirk use to store if quirk-specific ACS is enabled */
193 PCI_DEV_FLAGS_ACS_ENABLED_QUIRK = (__force pci_dev_flags_t) (1 << 3),
194 /* Use a PCIe-to-PCI bridge alias even if !pci_is_pcie */
195 PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS = (__force pci_dev_flags_t) (1 << 5),
196 /* Do not use bus resets for device */
197 PCI_DEV_FLAGS_NO_BUS_RESET = (__force pci_dev_flags_t) (1 << 6),
198 /* Do not use PM reset even if device advertises NoSoftRst- */
199 PCI_DEV_FLAGS_NO_PM_RESET = (__force pci_dev_flags_t) (1 << 7),
200 /* Get VPD from function 0 VPD */
201 PCI_DEV_FLAGS_VPD_REF_F0 = (__force pci_dev_flags_t) (1 << 8),
202 /* A non-root bridge where translation occurs, stop alias search here */
203 PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT = (__force pci_dev_flags_t) (1 << 9),
204 /* Do not use FLR even if device advertises PCI_AF_CAP */
205 PCI_DEV_FLAGS_NO_FLR_RESET = (__force pci_dev_flags_t) (1 << 10),
206 /* Don't use Relaxed Ordering for TLPs directed at this device */
207 PCI_DEV_FLAGS_NO_RELAXED_ORDERING = (__force pci_dev_flags_t) (1 << 11),
210 enum pci_irq_reroute_variant {
211 INTEL_IRQ_REROUTE_VARIANT = 1,
212 MAX_IRQ_REROUTE_VARIANTS = 3
215 typedef unsigned short __bitwise pci_bus_flags_t;
217 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1,
218 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2,
219 PCI_BUS_FLAGS_NO_AERSID = (__force pci_bus_flags_t) 4,
222 /* Values from Link Status register, PCIe r3.1, sec 7.8.8 */
223 enum pcie_link_width {
224 PCIE_LNK_WIDTH_RESRV = 0x00,
232 PCIE_LNK_WIDTH_UNKNOWN = 0xff,
235 /* Based on the PCI Hotplug Spec, but some values are made up by us */
237 PCI_SPEED_33MHz = 0x00,
238 PCI_SPEED_66MHz = 0x01,
239 PCI_SPEED_66MHz_PCIX = 0x02,
240 PCI_SPEED_100MHz_PCIX = 0x03,
241 PCI_SPEED_133MHz_PCIX = 0x04,
242 PCI_SPEED_66MHz_PCIX_ECC = 0x05,
243 PCI_SPEED_100MHz_PCIX_ECC = 0x06,
244 PCI_SPEED_133MHz_PCIX_ECC = 0x07,
245 PCI_SPEED_66MHz_PCIX_266 = 0x09,
246 PCI_SPEED_100MHz_PCIX_266 = 0x0a,
247 PCI_SPEED_133MHz_PCIX_266 = 0x0b,
253 PCI_SPEED_66MHz_PCIX_533 = 0x11,
254 PCI_SPEED_100MHz_PCIX_533 = 0x12,
255 PCI_SPEED_133MHz_PCIX_533 = 0x13,
256 PCIE_SPEED_2_5GT = 0x14,
257 PCIE_SPEED_5_0GT = 0x15,
258 PCIE_SPEED_8_0GT = 0x16,
259 PCIE_SPEED_16_0GT = 0x17,
260 PCI_SPEED_UNKNOWN = 0xff,
263 struct pci_cap_saved_data {
270 struct pci_cap_saved_state {
271 struct hlist_node next;
272 struct pci_cap_saved_data cap;
276 struct pcie_link_state;
281 /* The pci_dev structure describes PCI devices */
283 struct list_head bus_list; /* Node in per-bus list */
284 struct pci_bus *bus; /* Bus this device is on */
285 struct pci_bus *subordinate; /* Bus this device bridges to */
287 void *sysdata; /* Hook for sys-specific extension */
288 struct proc_dir_entry *procent; /* Device entry in /proc/bus/pci */
289 struct pci_slot *slot; /* Physical slot this device is in */
291 unsigned int devfn; /* Encoded device & function index */
292 unsigned short vendor;
293 unsigned short device;
294 unsigned short subsystem_vendor;
295 unsigned short subsystem_device;
296 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
297 u8 revision; /* PCI revision, low byte of class word */
298 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
299 #ifdef CONFIG_PCIEAER
300 u16 aer_cap; /* AER capability offset */
302 u8 pcie_cap; /* PCIe capability offset */
303 u8 msi_cap; /* MSI capability offset */
304 u8 msix_cap; /* MSI-X capability offset */
305 u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */
306 u8 rom_base_reg; /* Config register controlling ROM */
307 u8 pin; /* Interrupt pin this device uses */
308 u16 pcie_flags_reg; /* Cached PCIe Capabilities Register */
309 unsigned long *dma_alias_mask;/* Mask of enabled devfn aliases */
311 struct pci_driver *driver; /* Driver bound to this device */
312 u64 dma_mask; /* Mask of the bits of bus address this
313 device implements. Normally this is
314 0xffffffff. You only need to change
315 this if your device has broken DMA
316 or supports 64-bit transfers. */
318 struct device_dma_parameters dma_parms;
320 pci_power_t current_state; /* Current operating state. In ACPI,
321 this is D0-D3, D0 being fully
322 functional, and D3 being off. */
323 u8 pm_cap; /* PM capability offset */
324 unsigned int pme_support:5; /* Bitmask of states from which PME#
326 unsigned int pme_poll:1; /* Poll device's PME status bit */
327 unsigned int d1_support:1; /* Low power state D1 is supported */
328 unsigned int d2_support:1; /* Low power state D2 is supported */
329 unsigned int no_d1d2:1; /* D1 and D2 are forbidden */
330 unsigned int no_d3cold:1; /* D3cold is forbidden */
331 unsigned int bridge_d3:1; /* Allow D3 for bridge */
332 unsigned int d3cold_allowed:1; /* D3cold is allowed by user */
333 unsigned int mmio_always_on:1; /* Disallow turning off io/mem
334 decoding during BAR sizing */
335 unsigned int wakeup_prepared:1;
336 unsigned int runtime_d3cold:1; /* Whether go through runtime
337 D3cold, not set for devices
338 powered on/off by the
339 corresponding bridge */
340 unsigned int ignore_hotplug:1; /* Ignore hotplug events */
341 unsigned int hotplug_user_indicators:1; /* SlotCtl indicators
342 controlled exclusively by
344 unsigned int d3_delay; /* D3->D0 transition time in ms */
345 unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */
347 #ifdef CONFIG_PCIEASPM
348 struct pcie_link_state *link_state; /* ASPM link state */
349 unsigned int ltr_path:1; /* Latency Tolerance Reporting
350 supported from root to here */
353 pci_channel_state_t error_state; /* Current connectivity state */
354 struct device dev; /* Generic device interface */
356 int cfg_size; /* Size of config space */
359 * Instead of touching interrupt line and base address registers
360 * directly, use the values stored here. They might be different!
363 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
365 bool match_driver; /* Skip attaching driver */
367 unsigned int transparent:1; /* Subtractive decode bridge */
368 unsigned int multifunction:1; /* Multi-function device */
370 unsigned int is_added:1;
371 unsigned int is_busmaster:1; /* Is busmaster */
372 unsigned int no_msi:1; /* May not use MSI */
373 unsigned int no_64bit_msi:1; /* May only use 32-bit MSIs */
374 unsigned int block_cfg_access:1; /* Config space access blocked */
375 unsigned int broken_parity_status:1; /* Generates false positive parity */
376 unsigned int irq_reroute_variant:2; /* Needs IRQ rerouting variant */
377 unsigned int msi_enabled:1;
378 unsigned int msix_enabled:1;
379 unsigned int ari_enabled:1; /* ARI forwarding */
380 unsigned int ats_enabled:1; /* Address Translation Svc */
381 unsigned int pasid_enabled:1; /* Process Address Space ID */
382 unsigned int pri_enabled:1; /* Page Request Interface */
383 unsigned int is_managed:1;
384 unsigned int needs_freset:1; /* Requires fundamental reset */
385 unsigned int state_saved:1;
386 unsigned int is_physfn:1;
387 unsigned int is_virtfn:1;
388 unsigned int reset_fn:1;
389 unsigned int is_hotplug_bridge:1;
390 unsigned int is_thunderbolt:1; /* Thunderbolt controller */
391 unsigned int __aer_firmware_first_valid:1;
392 unsigned int __aer_firmware_first:1;
393 unsigned int broken_intx_masking:1; /* INTx masking can't be used */
394 unsigned int io_window_1k:1; /* Intel bridge 1K I/O windows */
395 unsigned int irq_managed:1;
396 unsigned int has_secondary_link:1;
397 unsigned int non_compliant_bars:1; /* Broken BARs; ignore them */
398 unsigned int is_probed:1; /* Device probing in progress */
399 pci_dev_flags_t dev_flags;
400 atomic_t enable_cnt; /* pci_enable_device has been called */
402 u32 saved_config_space[16]; /* Config space saved at suspend time */
403 struct hlist_head saved_cap_space;
404 struct bin_attribute *rom_attr; /* Attribute descriptor for sysfs ROM entry */
405 int rom_attr_enabled; /* Display of ROM attribute enabled? */
406 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
407 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
409 #ifdef CONFIG_PCIE_PTM
410 unsigned int ptm_root:1;
411 unsigned int ptm_enabled:1;
414 #ifdef CONFIG_PCI_MSI
415 const struct attribute_group **msi_irq_groups;
418 #ifdef CONFIG_PCI_ATS
420 struct pci_sriov *sriov; /* PF: SR-IOV info */
421 struct pci_dev *physfn; /* VF: related PF */
423 u16 ats_cap; /* ATS Capability offset */
424 u8 ats_stu; /* ATS Smallest Translation Unit */
425 atomic_t ats_ref_cnt; /* Number of VFs with ATS enabled */
427 #ifdef CONFIG_PCI_PRI
428 u32 pri_reqs_alloc; /* Number of PRI requests allocated */
430 #ifdef CONFIG_PCI_PASID
433 phys_addr_t rom; /* Physical address if not from BAR */
434 size_t romlen; /* Length if not from BAR */
435 char *driver_override; /* Driver name to force a match */
437 unsigned long priv_flags; /* Private flags for the PCI driver */
440 static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
442 #ifdef CONFIG_PCI_IOV
449 struct pci_dev *pci_alloc_dev(struct pci_bus *bus);
451 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
452 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
454 static inline int pci_channel_offline(struct pci_dev *pdev)
456 return (pdev->error_state != pci_channel_io_normal);
459 struct pci_host_bridge {
461 struct pci_bus *bus; /* Root bus */
465 struct list_head windows; /* resource_entry */
466 u8 (*swizzle_irq)(struct pci_dev *, u8 *); /* Platform IRQ swizzler */
467 int (*map_irq)(const struct pci_dev *, u8, u8);
468 void (*release_fn)(struct pci_host_bridge *);
470 struct msi_controller *msi;
471 unsigned int ignore_reset_delay:1; /* For entire hierarchy */
472 unsigned int no_ext_tags:1; /* No Extended Tags */
473 /* Resource alignment requirements */
474 resource_size_t (*align_resource)(struct pci_dev *dev,
475 const struct resource *res,
476 resource_size_t start,
477 resource_size_t size,
478 resource_size_t align);
479 unsigned long private[0] ____cacheline_aligned;
482 #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev)
484 static inline void *pci_host_bridge_priv(struct pci_host_bridge *bridge)
486 return (void *)bridge->private;
489 static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv)
491 return container_of(priv, struct pci_host_bridge, private);
494 struct pci_host_bridge *pci_alloc_host_bridge(size_t priv);
495 struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev,
497 void pci_free_host_bridge(struct pci_host_bridge *bridge);
498 struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
500 void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
501 void (*release_fn)(struct pci_host_bridge *),
504 int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge);
507 * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond
508 * to P2P or CardBus bridge windows) go in a table. Additional ones (for
509 * buses below host bridges or subtractive decode bridges) go in the list.
510 * Use pci_bus_for_each_resource() to iterate through all the resources.
514 * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly
515 * and there's no way to program the bridge with the details of the window.
516 * This does not apply to ACPI _CRS windows, even with the _DEC subtractive-
517 * decode bit set, because they are explicit and can be programmed with _SRS.
519 #define PCI_SUBTRACTIVE_DECODE 0x1
521 struct pci_bus_resource {
522 struct list_head list;
523 struct resource *res;
527 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
530 struct list_head node; /* Node in list of buses */
531 struct pci_bus *parent; /* Parent bus this bridge is on */
532 struct list_head children; /* List of child buses */
533 struct list_head devices; /* List of devices on this bus */
534 struct pci_dev *self; /* Bridge device as seen by parent */
535 struct list_head slots; /* List of slots on this bus;
536 protected by pci_slot_mutex */
537 struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
538 struct list_head resources; /* Address space routed to this bus */
539 struct resource busn_res; /* Bus numbers routed to this bus */
541 struct pci_ops *ops; /* Configuration access functions */
542 struct msi_controller *msi; /* MSI controller */
543 void *sysdata; /* Hook for sys-specific extension */
544 struct proc_dir_entry *procdir; /* Directory entry in /proc/bus/pci */
546 unsigned char number; /* Bus number */
547 unsigned char primary; /* Number of primary bridge */
548 unsigned char max_bus_speed; /* enum pci_bus_speed */
549 unsigned char cur_bus_speed; /* enum pci_bus_speed */
550 #ifdef CONFIG_PCI_DOMAINS_GENERIC
556 unsigned short bridge_ctl; /* Manage NO_ISA/FBB/et al behaviors */
557 pci_bus_flags_t bus_flags; /* Inherited by child buses */
558 struct device *bridge;
560 struct bin_attribute *legacy_io; /* Legacy I/O for this bus */
561 struct bin_attribute *legacy_mem; /* Legacy mem */
562 unsigned int is_added:1;
565 #define to_pci_bus(n) container_of(n, struct pci_bus, dev)
568 * Returns true if the PCI bus is root (behind host-PCI bridge),
571 * Some code assumes that "bus->self == NULL" means that bus is a root bus.
572 * This is incorrect because "virtual" buses added for SR-IOV (via
573 * virtfn_add_bus()) have "bus->self == NULL" but are not root buses.
575 static inline bool pci_is_root_bus(struct pci_bus *pbus)
577 return !(pbus->parent);
581 * pci_is_bridge - check if the PCI device is a bridge
584 * Return true if the PCI device is bridge whether it has subordinate
587 static inline bool pci_is_bridge(struct pci_dev *dev)
589 return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
590 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS;
593 #define for_each_pci_bridge(dev, bus) \
594 list_for_each_entry(dev, &bus->devices, bus_list) \
595 if (!pci_is_bridge(dev)) {} else
597 static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev)
599 dev = pci_physfn(dev);
600 if (pci_is_root_bus(dev->bus))
603 return dev->bus->self;
606 struct device *pci_get_host_bridge_device(struct pci_dev *dev);
607 void pci_put_host_bridge_device(struct device *dev);
609 #ifdef CONFIG_PCI_MSI
610 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
612 return pci_dev->msi_enabled || pci_dev->msix_enabled;
615 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
618 /* Error values that may be returned by PCI functions */
619 #define PCIBIOS_SUCCESSFUL 0x00
620 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
621 #define PCIBIOS_BAD_VENDOR_ID 0x83
622 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
623 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
624 #define PCIBIOS_SET_FAILED 0x88
625 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
627 /* Translate above to generic errno for passing back through non-PCI code */
628 static inline int pcibios_err_to_errno(int err)
630 if (err <= PCIBIOS_SUCCESSFUL)
631 return err; /* Assume already errno */
634 case PCIBIOS_FUNC_NOT_SUPPORTED:
636 case PCIBIOS_BAD_VENDOR_ID:
638 case PCIBIOS_DEVICE_NOT_FOUND:
640 case PCIBIOS_BAD_REGISTER_NUMBER:
642 case PCIBIOS_SET_FAILED:
644 case PCIBIOS_BUFFER_TOO_SMALL:
651 /* Low-level architecture-dependent routines */
654 int (*add_bus)(struct pci_bus *bus);
655 void (*remove_bus)(struct pci_bus *bus);
656 void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where);
657 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
658 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
662 * ACPI needs to be able to access PCI config space before we've done a
663 * PCI bus scan and created pci_bus structures.
665 int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
666 int reg, int len, u32 *val);
667 int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
668 int reg, int len, u32 val);
670 #ifdef CONFIG_PCI_BUS_ADDR_T_64BIT
671 typedef u64 pci_bus_addr_t;
673 typedef u32 pci_bus_addr_t;
676 struct pci_bus_region {
677 pci_bus_addr_t start;
682 spinlock_t lock; /* Protects list, index */
683 struct list_head list; /* For IDs added at runtime */
688 * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
689 * a set of callbacks in struct pci_error_handlers, that device driver
690 * will be notified of PCI bus errors, and will be driven to recovery
691 * when an error occurs.
694 typedef unsigned int __bitwise pci_ers_result_t;
696 enum pci_ers_result {
697 /* No result/none/not supported in device driver */
698 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
700 /* Device driver can recover without slot reset */
701 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
703 /* Device driver wants slot to be reset */
704 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
706 /* Device has completely failed, is unrecoverable */
707 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
709 /* Device driver is fully recovered and operational */
710 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
712 /* No AER capabilities registered for the driver */
713 PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6,
716 /* PCI bus error event callbacks */
717 struct pci_error_handlers {
718 /* PCI bus error detected on this device */
719 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
720 enum pci_channel_state error);
722 /* MMIO has been re-enabled, but not DMA */
723 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
725 /* PCI slot has been reset */
726 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
728 /* PCI function reset prepare or completed */
729 void (*reset_prepare)(struct pci_dev *dev);
730 void (*reset_done)(struct pci_dev *dev);
732 /* Device driver may resume normal operations */
733 void (*resume)(struct pci_dev *dev);
739 struct list_head node;
741 const struct pci_device_id *id_table; /* Must be non-NULL for probe to be called */
742 int (*probe)(struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
743 void (*remove)(struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
744 int (*suspend)(struct pci_dev *dev, pm_message_t state); /* Device suspended */
745 int (*suspend_late)(struct pci_dev *dev, pm_message_t state);
746 int (*resume_early)(struct pci_dev *dev);
747 int (*resume) (struct pci_dev *dev); /* Device woken up */
748 void (*shutdown) (struct pci_dev *dev);
749 int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* On PF */
750 const struct pci_error_handlers *err_handler;
751 const struct attribute_group **groups;
752 struct device_driver driver;
753 struct pci_dynids dynids;
756 #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
759 * PCI_DEVICE - macro used to describe a specific PCI device
760 * @vend: the 16 bit PCI Vendor ID
761 * @dev: the 16 bit PCI Device ID
763 * This macro is used to create a struct pci_device_id that matches a
764 * specific device. The subvendor and subdevice fields will be set to
767 #define PCI_DEVICE(vend,dev) \
768 .vendor = (vend), .device = (dev), \
769 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
772 * PCI_DEVICE_SUB - macro used to describe a specific PCI device with subsystem
773 * @vend: the 16 bit PCI Vendor ID
774 * @dev: the 16 bit PCI Device ID
775 * @subvend: the 16 bit PCI Subvendor ID
776 * @subdev: the 16 bit PCI Subdevice ID
778 * This macro is used to create a struct pci_device_id that matches a
779 * specific device with subsystem information.
781 #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \
782 .vendor = (vend), .device = (dev), \
783 .subvendor = (subvend), .subdevice = (subdev)
786 * PCI_DEVICE_CLASS - macro used to describe a specific PCI device class
787 * @dev_class: the class, subclass, prog-if triple for this device
788 * @dev_class_mask: the class mask for this device
790 * This macro is used to create a struct pci_device_id that matches a
791 * specific PCI class. The vendor, device, subvendor, and subdevice
792 * fields will be set to PCI_ANY_ID.
794 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
795 .class = (dev_class), .class_mask = (dev_class_mask), \
796 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
797 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
800 * PCI_VDEVICE - macro used to describe a specific PCI device in short form
801 * @vend: the vendor name
802 * @dev: the 16 bit PCI Device ID
804 * This macro is used to create a struct pci_device_id that matches a
805 * specific PCI device. The subvendor, and subdevice fields will be set
806 * to PCI_ANY_ID. The macro allows the next field to follow as the device
809 #define PCI_VDEVICE(vend, dev) \
810 .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \
811 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0
814 PCI_REASSIGN_ALL_RSRC = 0x00000001, /* Ignore firmware setup */
815 PCI_REASSIGN_ALL_BUS = 0x00000002, /* Reassign all bus numbers */
816 PCI_PROBE_ONLY = 0x00000004, /* Use existing setup */
817 PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, /* Don't do ISA alignment */
818 PCI_ENABLE_PROC_DOMAINS = 0x00000010, /* Enable domains in /proc */
819 PCI_COMPAT_DOMAIN_0 = 0x00000020, /* ... except domain 0 */
820 PCI_SCAN_ALL_PCIE_DEVS = 0x00000040, /* Scan all, not just dev 0 */
823 /* These external functions are only available when PCI support is enabled */
826 extern unsigned int pci_flags;
828 static inline void pci_set_flags(int flags) { pci_flags = flags; }
829 static inline void pci_add_flags(int flags) { pci_flags |= flags; }
830 static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; }
831 static inline int pci_has_flag(int flag) { return pci_flags & flag; }
833 void pcie_bus_configure_settings(struct pci_bus *bus);
835 enum pcie_bus_config_types {
836 PCIE_BUS_TUNE_OFF, /* Don't touch MPS at all */
837 PCIE_BUS_DEFAULT, /* Ensure MPS matches upstream bridge */
838 PCIE_BUS_SAFE, /* Use largest MPS boot-time devices support */
839 PCIE_BUS_PERFORMANCE, /* Use MPS and MRRS for best performance */
840 PCIE_BUS_PEER2PEER, /* Set MPS = 128 for all devices */
843 extern enum pcie_bus_config_types pcie_bus_config;
845 extern struct bus_type pci_bus_type;
847 /* Do NOT directly access these two variables, unless you are arch-specific PCI
848 * code, or PCI core code. */
849 extern struct list_head pci_root_buses; /* List of all known PCI buses */
850 /* Some device drivers need know if PCI is initiated */
851 int no_pci_devices(void);
853 void pcibios_resource_survey_bus(struct pci_bus *bus);
854 void pcibios_bus_add_device(struct pci_dev *pdev);
855 void pcibios_add_bus(struct pci_bus *bus);
856 void pcibios_remove_bus(struct pci_bus *bus);
857 void pcibios_fixup_bus(struct pci_bus *);
858 int __must_check pcibios_enable_device(struct pci_dev *, int mask);
859 /* Architecture-specific versions may override this (weak) */
860 char *pcibios_setup(char *str);
862 /* Used only when drivers/pci/setup.c is used */
863 resource_size_t pcibios_align_resource(void *, const struct resource *,
867 /* Weak but can be overriden by arch */
868 void pci_fixup_cardbus(struct pci_bus *);
870 /* Generic PCI functions used internally */
872 void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
873 struct resource *res);
874 void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res,
875 struct pci_bus_region *region);
876 void pcibios_scan_specific_bus(int busn);
877 struct pci_bus *pci_find_bus(int domain, int busnr);
878 void pci_bus_add_devices(const struct pci_bus *bus);
879 struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
880 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
881 struct pci_ops *ops, void *sysdata,
882 struct list_head *resources);
883 int pci_host_probe(struct pci_host_bridge *bridge);
884 int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
885 int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
886 void pci_bus_release_busn_res(struct pci_bus *b);
887 struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
888 struct pci_ops *ops, void *sysdata,
889 struct list_head *resources);
890 int pci_scan_root_bus_bridge(struct pci_host_bridge *bridge);
891 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
893 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
894 struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
896 struct hotplug_slot *hotplug);
897 void pci_destroy_slot(struct pci_slot *slot);
899 void pci_dev_assign_slot(struct pci_dev *dev);
901 static inline void pci_dev_assign_slot(struct pci_dev *dev) { }
903 int pci_scan_slot(struct pci_bus *bus, int devfn);
904 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
905 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
906 unsigned int pci_scan_child_bus(struct pci_bus *bus);
907 void pci_bus_add_device(struct pci_dev *dev);
908 void pci_read_bridge_bases(struct pci_bus *child);
909 struct resource *pci_find_parent_resource(const struct pci_dev *dev,
910 struct resource *res);
911 struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev);
912 u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin);
913 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
914 u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
915 struct pci_dev *pci_dev_get(struct pci_dev *dev);
916 void pci_dev_put(struct pci_dev *dev);
917 void pci_remove_bus(struct pci_bus *b);
918 void pci_stop_and_remove_bus_device(struct pci_dev *dev);
919 void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev);
920 void pci_stop_root_bus(struct pci_bus *bus);
921 void pci_remove_root_bus(struct pci_bus *bus);
922 void pci_setup_cardbus(struct pci_bus *bus);
923 void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type);
924 void pci_sort_breadthfirst(void);
925 #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
926 #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
928 /* Generic PCI functions exported to card drivers */
930 enum pci_lost_interrupt_reason {
931 PCI_LOST_IRQ_NO_INFORMATION = 0,
932 PCI_LOST_IRQ_DISABLE_MSI,
933 PCI_LOST_IRQ_DISABLE_MSIX,
934 PCI_LOST_IRQ_DISABLE_ACPI,
936 enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
937 int pci_find_capability(struct pci_dev *dev, int cap);
938 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
939 int pci_find_ext_capability(struct pci_dev *dev, int cap);
940 int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap);
941 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
942 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
943 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
945 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
946 struct pci_dev *from);
947 struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
948 unsigned int ss_vendor, unsigned int ss_device,
949 struct pci_dev *from);
950 struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
951 struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
953 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
954 int pci_dev_present(const struct pci_device_id *ids);
956 int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
958 int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
959 int where, u16 *val);
960 int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
961 int where, u32 *val);
962 int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
964 int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
966 int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
969 int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn,
970 int where, int size, u32 *val);
971 int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn,
972 int where, int size, u32 val);
973 int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn,
974 int where, int size, u32 *val);
975 int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn,
976 int where, int size, u32 val);
978 struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);
980 int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val);
981 int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val);
982 int pci_read_config_dword(const struct pci_dev *dev, int where, u32 *val);
983 int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val);
984 int pci_write_config_word(const struct pci_dev *dev, int where, u16 val);
985 int pci_write_config_dword(const struct pci_dev *dev, int where, u32 val);
987 int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val);
988 int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val);
989 int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val);
990 int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val);
991 int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos,
993 int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
996 static inline int pcie_capability_set_word(struct pci_dev *dev, int pos,
999 return pcie_capability_clear_and_set_word(dev, pos, 0, set);
1002 static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos,
1005 return pcie_capability_clear_and_set_dword(dev, pos, 0, set);
1008 static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos,
1011 return pcie_capability_clear_and_set_word(dev, pos, clear, 0);
1014 static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos,
1017 return pcie_capability_clear_and_set_dword(dev, pos, clear, 0);
1020 /* User-space driven config access */
1021 int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
1022 int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
1023 int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
1024 int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
1025 int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
1026 int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
1028 int __must_check pci_enable_device(struct pci_dev *dev);
1029 int __must_check pci_enable_device_io(struct pci_dev *dev);
1030 int __must_check pci_enable_device_mem(struct pci_dev *dev);
1031 int __must_check pci_reenable_device(struct pci_dev *);
1032 int __must_check pcim_enable_device(struct pci_dev *pdev);
1033 void pcim_pin_device(struct pci_dev *pdev);
1035 static inline bool pci_intx_mask_supported(struct pci_dev *pdev)
1038 * INTx masking is supported if PCI_COMMAND_INTX_DISABLE is
1039 * writable and no quirk has marked the feature broken.
1041 return !pdev->broken_intx_masking;
1044 static inline int pci_is_enabled(struct pci_dev *pdev)
1046 return (atomic_read(&pdev->enable_cnt) > 0);
1049 static inline int pci_is_managed(struct pci_dev *pdev)
1051 return pdev->is_managed;
1054 void pci_disable_device(struct pci_dev *dev);
1056 extern unsigned int pcibios_max_latency;
1057 void pci_set_master(struct pci_dev *dev);
1058 void pci_clear_master(struct pci_dev *dev);
1060 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
1061 int pci_set_cacheline_size(struct pci_dev *dev);
1062 #define HAVE_PCI_SET_MWI
1063 int __must_check pci_set_mwi(struct pci_dev *dev);
1064 int __must_check pcim_set_mwi(struct pci_dev *dev);
1065 int pci_try_set_mwi(struct pci_dev *dev);
1066 void pci_clear_mwi(struct pci_dev *dev);
1067 void pci_intx(struct pci_dev *dev, int enable);
1068 bool pci_check_and_mask_intx(struct pci_dev *dev);
1069 bool pci_check_and_unmask_intx(struct pci_dev *dev);
1070 int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask);
1071 int pci_wait_for_pending_transaction(struct pci_dev *dev);
1072 int pcix_get_max_mmrbc(struct pci_dev *dev);
1073 int pcix_get_mmrbc(struct pci_dev *dev);
1074 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
1075 int pcie_get_readrq(struct pci_dev *dev);
1076 int pcie_set_readrq(struct pci_dev *dev, int rq);
1077 int pcie_get_mps(struct pci_dev *dev);
1078 int pcie_set_mps(struct pci_dev *dev, int mps);
1079 int pcie_get_minimum_link(struct pci_dev *dev, enum pci_bus_speed *speed,
1080 enum pcie_link_width *width);
1081 u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev,
1082 enum pci_bus_speed *speed,
1083 enum pcie_link_width *width);
1084 void pcie_print_link_status(struct pci_dev *dev);
1085 void pcie_flr(struct pci_dev *dev);
1086 int __pci_reset_function_locked(struct pci_dev *dev);
1087 int pci_reset_function(struct pci_dev *dev);
1088 int pci_reset_function_locked(struct pci_dev *dev);
1089 int pci_try_reset_function(struct pci_dev *dev);
1090 int pci_probe_reset_slot(struct pci_slot *slot);
1091 int pci_reset_slot(struct pci_slot *slot);
1092 int pci_try_reset_slot(struct pci_slot *slot);
1093 int pci_probe_reset_bus(struct pci_bus *bus);
1094 int pci_reset_bus(struct pci_bus *bus);
1095 int pci_try_reset_bus(struct pci_bus *bus);
1096 void pci_reset_secondary_bus(struct pci_dev *dev);
1097 void pcibios_reset_secondary_bus(struct pci_dev *dev);
1098 void pci_reset_bridge_secondary_bus(struct pci_dev *dev);
1099 void pci_update_resource(struct pci_dev *dev, int resno);
1100 int __must_check pci_assign_resource(struct pci_dev *dev, int i);
1101 int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align);
1102 void pci_release_resource(struct pci_dev *dev, int resno);
1103 int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size);
1104 int pci_select_bars(struct pci_dev *dev, unsigned long flags);
1105 bool pci_device_is_present(struct pci_dev *pdev);
1106 void pci_ignore_hotplug(struct pci_dev *dev);
1108 int __printf(6, 7) pci_request_irq(struct pci_dev *dev, unsigned int nr,
1109 irq_handler_t handler, irq_handler_t thread_fn, void *dev_id,
1110 const char *fmt, ...);
1111 void pci_free_irq(struct pci_dev *dev, unsigned int nr, void *dev_id);
1113 /* ROM control related routines */
1114 int pci_enable_rom(struct pci_dev *pdev);
1115 void pci_disable_rom(struct pci_dev *pdev);
1116 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
1117 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
1118 size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
1119 void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size);
1121 /* Power management related routines */
1122 int pci_save_state(struct pci_dev *dev);
1123 void pci_restore_state(struct pci_dev *dev);
1124 struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev);
1125 int pci_load_saved_state(struct pci_dev *dev,
1126 struct pci_saved_state *state);
1127 int pci_load_and_free_saved_state(struct pci_dev *dev,
1128 struct pci_saved_state **state);
1129 struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap);
1130 struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
1132 int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size);
1133 int pci_add_ext_cap_save_buffer(struct pci_dev *dev,
1134 u16 cap, unsigned int size);
1135 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
1136 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
1137 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
1138 bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
1139 void pci_pme_active(struct pci_dev *dev, bool enable);
1140 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable);
1141 int pci_wake_from_d3(struct pci_dev *dev, bool enable);
1142 int pci_prepare_to_sleep(struct pci_dev *dev);
1143 int pci_back_from_sleep(struct pci_dev *dev);
1144 bool pci_dev_run_wake(struct pci_dev *dev);
1145 bool pci_check_pme_status(struct pci_dev *dev);
1146 void pci_pme_wakeup_bus(struct pci_bus *bus);
1147 void pci_d3cold_enable(struct pci_dev *dev);
1148 void pci_d3cold_disable(struct pci_dev *dev);
1149 bool pcie_relaxed_ordering_enabled(struct pci_dev *dev);
1151 /* PCI Virtual Channel */
1152 int pci_save_vc_state(struct pci_dev *dev);
1153 void pci_restore_vc_state(struct pci_dev *dev);
1154 void pci_allocate_vc_save_buffers(struct pci_dev *dev);
1156 /* For use by arch with custom probe code */
1157 void set_pcie_port_type(struct pci_dev *pdev);
1158 void set_pcie_hotplug_bridge(struct pci_dev *pdev);
1160 /* Functions for PCI Hotplug drivers to use */
1161 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
1162 unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge);
1163 unsigned int pci_rescan_bus(struct pci_bus *bus);
1164 void pci_lock_rescan_remove(void);
1165 void pci_unlock_rescan_remove(void);
1167 /* Vital Product Data routines */
1168 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
1169 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
1170 int pci_set_vpd_size(struct pci_dev *dev, size_t len);
1172 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
1173 resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx);
1174 void pci_bus_assign_resources(const struct pci_bus *bus);
1175 void pci_bus_claim_resources(struct pci_bus *bus);
1176 void pci_bus_size_bridges(struct pci_bus *bus);
1177 int pci_claim_resource(struct pci_dev *, int);
1178 int pci_claim_bridge_resource(struct pci_dev *bridge, int i);
1179 void pci_assign_unassigned_resources(void);
1180 void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
1181 void pci_assign_unassigned_bus_resources(struct pci_bus *bus);
1182 void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus);
1183 int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type);
1184 void pdev_enable_device(struct pci_dev *);
1185 int pci_enable_resources(struct pci_dev *, int mask);
1186 void pci_assign_irq(struct pci_dev *dev);
1187 struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res);
1188 #define HAVE_PCI_REQ_REGIONS 2
1189 int __must_check pci_request_regions(struct pci_dev *, const char *);
1190 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
1191 void pci_release_regions(struct pci_dev *);
1192 int __must_check pci_request_region(struct pci_dev *, int, const char *);
1193 int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
1194 void pci_release_region(struct pci_dev *, int);
1195 int pci_request_selected_regions(struct pci_dev *, int, const char *);
1196 int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
1197 void pci_release_selected_regions(struct pci_dev *, int);
1199 /* drivers/pci/bus.c */
1200 struct pci_bus *pci_bus_get(struct pci_bus *bus);
1201 void pci_bus_put(struct pci_bus *bus);
1202 void pci_add_resource(struct list_head *resources, struct resource *res);
1203 void pci_add_resource_offset(struct list_head *resources, struct resource *res,
1204 resource_size_t offset);
1205 void pci_free_resource_list(struct list_head *resources);
1206 void pci_bus_add_resource(struct pci_bus *bus, struct resource *res,
1207 unsigned int flags);
1208 struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
1209 void pci_bus_remove_resources(struct pci_bus *bus);
1210 int devm_request_pci_bus_resources(struct device *dev,
1211 struct list_head *resources);
1213 #define pci_bus_for_each_resource(bus, res, i) \
1215 (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \
1218 int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
1219 struct resource *res, resource_size_t size,
1220 resource_size_t align, resource_size_t min,
1221 unsigned long type_mask,
1222 resource_size_t (*alignf)(void *,
1223 const struct resource *,
1229 int pci_register_io_range(phys_addr_t addr, resource_size_t size);
1230 unsigned long pci_address_to_pio(phys_addr_t addr);
1231 phys_addr_t pci_pio_to_address(unsigned long pio);
1232 int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
1233 void pci_unmap_iospace(struct resource *res);
1234 void __iomem *devm_pci_remap_cfgspace(struct device *dev,
1235 resource_size_t offset,
1236 resource_size_t size);
1237 void __iomem *devm_pci_remap_cfg_resource(struct device *dev,
1238 struct resource *res);
1240 static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar)
1242 struct pci_bus_region region;
1244 pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]);
1245 return region.start;
1248 /* Proper probing supporting hot-pluggable devices */
1249 int __must_check __pci_register_driver(struct pci_driver *, struct module *,
1250 const char *mod_name);
1252 /* pci_register_driver() must be a macro so KBUILD_MODNAME can be expanded */
1253 #define pci_register_driver(driver) \
1254 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
1256 void pci_unregister_driver(struct pci_driver *dev);
1259 * module_pci_driver() - Helper macro for registering a PCI driver
1260 * @__pci_driver: pci_driver struct
1262 * Helper macro for PCI drivers which do not do anything special in module
1263 * init/exit. This eliminates a lot of boilerplate. Each module may only
1264 * use this macro once, and calling it replaces module_init() and module_exit()
1266 #define module_pci_driver(__pci_driver) \
1267 module_driver(__pci_driver, pci_register_driver, pci_unregister_driver)
1270 * builtin_pci_driver() - Helper macro for registering a PCI driver
1271 * @__pci_driver: pci_driver struct
1273 * Helper macro for PCI drivers which do not do anything special in their
1274 * init code. This eliminates a lot of boilerplate. Each driver may only
1275 * use this macro once, and calling it replaces device_initcall(...)
1277 #define builtin_pci_driver(__pci_driver) \
1278 builtin_driver(__pci_driver, pci_register_driver)
1280 struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
1281 int pci_add_dynid(struct pci_driver *drv,
1282 unsigned int vendor, unsigned int device,
1283 unsigned int subvendor, unsigned int subdevice,
1284 unsigned int class, unsigned int class_mask,
1285 unsigned long driver_data);
1286 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
1287 struct pci_dev *dev);
1288 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
1291 void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
1293 int pci_cfg_space_size(struct pci_dev *dev);
1294 unsigned char pci_bus_max_busnr(struct pci_bus *bus);
1295 void pci_setup_bridge(struct pci_bus *bus);
1296 resource_size_t pcibios_window_alignment(struct pci_bus *bus,
1297 unsigned long type);
1298 resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno);
1300 #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0)
1301 #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1)
1303 int pci_set_vga_state(struct pci_dev *pdev, bool decode,
1304 unsigned int command_bits, u32 flags);
1306 #define PCI_IRQ_LEGACY (1 << 0) /* Allow legacy interrupts */
1307 #define PCI_IRQ_MSI (1 << 1) /* Allow MSI interrupts */
1308 #define PCI_IRQ_MSIX (1 << 2) /* Allow MSI-X interrupts */
1309 #define PCI_IRQ_AFFINITY (1 << 3) /* Auto-assign affinity */
1310 #define PCI_IRQ_ALL_TYPES \
1311 (PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX)
1313 /* kmem_cache style wrapper around pci_alloc_consistent() */
1315 #include <linux/pci-dma.h>
1316 #include <linux/dmapool.h>
1318 #define pci_pool dma_pool
1319 #define pci_pool_create(name, pdev, size, align, allocation) \
1320 dma_pool_create(name, &pdev->dev, size, align, allocation)
1321 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
1322 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
1323 #define pci_pool_zalloc(pool, flags, handle) \
1324 dma_pool_zalloc(pool, flags, handle)
1325 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
1328 u32 vector; /* Kernel uses to write allocated vector */
1329 u16 entry; /* Driver uses to specify entry, OS writes */
1332 #ifdef CONFIG_PCI_MSI
1333 int pci_msi_vec_count(struct pci_dev *dev);
1334 void pci_disable_msi(struct pci_dev *dev);
1335 int pci_msix_vec_count(struct pci_dev *dev);
1336 void pci_disable_msix(struct pci_dev *dev);
1337 void pci_restore_msi_state(struct pci_dev *dev);
1338 int pci_msi_enabled(void);
1339 int pci_enable_msi(struct pci_dev *dev);
1340 int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
1341 int minvec, int maxvec);
1342 static inline int pci_enable_msix_exact(struct pci_dev *dev,
1343 struct msix_entry *entries, int nvec)
1345 int rc = pci_enable_msix_range(dev, entries, nvec, nvec);
1350 int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
1351 unsigned int max_vecs, unsigned int flags,
1352 const struct irq_affinity *affd);
1354 void pci_free_irq_vectors(struct pci_dev *dev);
1355 int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
1356 const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
1357 int pci_irq_get_node(struct pci_dev *pdev, int vec);
1360 static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
1361 static inline void pci_disable_msi(struct pci_dev *dev) { }
1362 static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; }
1363 static inline void pci_disable_msix(struct pci_dev *dev) { }
1364 static inline void pci_restore_msi_state(struct pci_dev *dev) { }
1365 static inline int pci_msi_enabled(void) { return 0; }
1366 static inline int pci_enable_msi(struct pci_dev *dev)
1368 static inline int pci_enable_msix_range(struct pci_dev *dev,
1369 struct msix_entry *entries, int minvec, int maxvec)
1371 static inline int pci_enable_msix_exact(struct pci_dev *dev,
1372 struct msix_entry *entries, int nvec)
1376 pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
1377 unsigned int max_vecs, unsigned int flags,
1378 const struct irq_affinity *aff_desc)
1380 if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1 && dev->irq)
1385 static inline void pci_free_irq_vectors(struct pci_dev *dev)
1389 static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
1391 if (WARN_ON_ONCE(nr > 0))
1395 static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
1398 return cpu_possible_mask;
1401 static inline int pci_irq_get_node(struct pci_dev *pdev, int vec)
1403 return first_online_node;
1408 pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
1409 unsigned int max_vecs, unsigned int flags)
1411 return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags,
1416 * pci_irqd_intx_xlate() - Translate PCI INTx value to an IRQ domain hwirq
1417 * @d: the INTx IRQ domain
1418 * @node: the DT node for the device whose interrupt we're translating
1419 * @intspec: the interrupt specifier data from the DT
1420 * @intsize: the number of entries in @intspec
1421 * @out_hwirq: pointer at which to write the hwirq number
1422 * @out_type: pointer at which to write the interrupt type
1424 * Translate a PCI INTx interrupt number from device tree in the range 1-4, as
1425 * stored in the standard PCI_INTERRUPT_PIN register, to a value in the range
1426 * 0-3 suitable for use in a 4 entry IRQ domain. That is, subtract one from the
1427 * INTx value to obtain the hwirq number.
1429 * Returns 0 on success, or -EINVAL if the interrupt specifier is out of range.
1431 static inline int pci_irqd_intx_xlate(struct irq_domain *d,
1432 struct device_node *node,
1434 unsigned int intsize,
1435 unsigned long *out_hwirq,
1436 unsigned int *out_type)
1438 const u32 intx = intspec[0];
1440 if (intx < PCI_INTERRUPT_INTA || intx > PCI_INTERRUPT_INTD)
1443 *out_hwirq = intx - PCI_INTERRUPT_INTA;
1447 #ifdef CONFIG_PCIEPORTBUS
1448 extern bool pcie_ports_disabled;
1449 extern bool pcie_ports_auto;
1451 #define pcie_ports_disabled true
1452 #define pcie_ports_auto false
1455 #ifdef CONFIG_PCIEASPM
1456 bool pcie_aspm_support_enabled(void);
1458 static inline bool pcie_aspm_support_enabled(void) { return false; }
1461 #ifdef CONFIG_PCIEAER
1462 void pci_no_aer(void);
1463 bool pci_aer_available(void);
1464 int pci_aer_init(struct pci_dev *dev);
1466 static inline void pci_no_aer(void) { }
1467 static inline bool pci_aer_available(void) { return false; }
1468 static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; }
1471 #ifdef CONFIG_PCIE_ECRC
1472 void pcie_set_ecrc_checking(struct pci_dev *dev);
1473 void pcie_ecrc_get_policy(char *str);
1475 static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
1476 static inline void pcie_ecrc_get_policy(char *str) { }
1479 #ifdef CONFIG_PCI_ATS
1480 /* Address Translation Service */
1481 void pci_ats_init(struct pci_dev *dev);
1482 int pci_enable_ats(struct pci_dev *dev, int ps);
1483 void pci_disable_ats(struct pci_dev *dev);
1484 int pci_ats_queue_depth(struct pci_dev *dev);
1486 static inline void pci_ats_init(struct pci_dev *d) { }
1487 static inline int pci_enable_ats(struct pci_dev *d, int ps) { return -ENODEV; }
1488 static inline void pci_disable_ats(struct pci_dev *d) { }
1489 static inline int pci_ats_queue_depth(struct pci_dev *d) { return -ENODEV; }
1492 #ifdef CONFIG_PCIE_PTM
1493 int pci_enable_ptm(struct pci_dev *dev, u8 *granularity);
1495 static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity)
1499 void pci_cfg_access_lock(struct pci_dev *dev);
1500 bool pci_cfg_access_trylock(struct pci_dev *dev);
1501 void pci_cfg_access_unlock(struct pci_dev *dev);
1504 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
1505 * a PCI domain is defined to be a set of PCI buses which share
1506 * configuration space.
1508 #ifdef CONFIG_PCI_DOMAINS
1509 extern int pci_domains_supported;
1510 int pci_get_new_domain_nr(void);
1512 enum { pci_domains_supported = 0 };
1513 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
1514 static inline int pci_proc_domain(struct pci_bus *bus) { return 0; }
1515 static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }
1516 #endif /* CONFIG_PCI_DOMAINS */
1519 * Generic implementation for PCI domain support. If your
1520 * architecture does not need custom management of PCI
1521 * domains then this implementation will be used
1523 #ifdef CONFIG_PCI_DOMAINS_GENERIC
1524 static inline int pci_domain_nr(struct pci_bus *bus)
1526 return bus->domain_nr;
1529 int acpi_pci_bus_find_domain_nr(struct pci_bus *bus);
1531 static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus)
1534 int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent);
1537 /* Some architectures require additional setup to direct VGA traffic */
1538 typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
1539 unsigned int command_bits, u32 flags);
1540 void pci_register_set_vga_state(arch_set_vga_state_t func);
1543 pci_request_io_regions(struct pci_dev *pdev, const char *name)
1545 return pci_request_selected_regions(pdev,
1546 pci_select_bars(pdev, IORESOURCE_IO), name);
1550 pci_release_io_regions(struct pci_dev *pdev)
1552 return pci_release_selected_regions(pdev,
1553 pci_select_bars(pdev, IORESOURCE_IO));
1557 pci_request_mem_regions(struct pci_dev *pdev, const char *name)
1559 return pci_request_selected_regions(pdev,
1560 pci_select_bars(pdev, IORESOURCE_MEM), name);
1564 pci_release_mem_regions(struct pci_dev *pdev)
1566 return pci_release_selected_regions(pdev,
1567 pci_select_bars(pdev, IORESOURCE_MEM));
1570 #else /* CONFIG_PCI is not enabled */
1572 static inline void pci_set_flags(int flags) { }
1573 static inline void pci_add_flags(int flags) { }
1574 static inline void pci_clear_flags(int flags) { }
1575 static inline int pci_has_flag(int flag) { return 0; }
1578 * If the system does not have PCI, clearly these return errors. Define
1579 * these as simple inline functions to avoid hair in drivers.
1581 #define _PCI_NOP(o, s, t) \
1582 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
1584 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
1586 #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
1587 _PCI_NOP(o, word, u16 x) \
1588 _PCI_NOP(o, dword, u32 x)
1589 _PCI_NOP_ALL(read, *)
1590 _PCI_NOP_ALL(write,)
1592 static inline struct pci_dev *pci_get_device(unsigned int vendor,
1593 unsigned int device,
1594 struct pci_dev *from)
1597 static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
1598 unsigned int device,
1599 unsigned int ss_vendor,
1600 unsigned int ss_device,
1601 struct pci_dev *from)
1604 static inline struct pci_dev *pci_get_class(unsigned int class,
1605 struct pci_dev *from)
1608 #define pci_dev_present(ids) (0)
1609 #define no_pci_devices() (1)
1610 #define pci_dev_put(dev) do { } while (0)
1612 static inline void pci_set_master(struct pci_dev *dev) { }
1613 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
1614 static inline void pci_disable_device(struct pci_dev *dev) { }
1615 static inline int pci_assign_resource(struct pci_dev *dev, int i)
1617 static inline int __pci_register_driver(struct pci_driver *drv,
1618 struct module *owner)
1620 static inline int pci_register_driver(struct pci_driver *drv)
1622 static inline void pci_unregister_driver(struct pci_driver *drv) { }
1623 static inline int pci_find_capability(struct pci_dev *dev, int cap)
1625 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
1628 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
1631 /* Power management related routines */
1632 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
1633 static inline void pci_restore_state(struct pci_dev *dev) { }
1634 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1636 static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable)
1638 static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1641 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1645 static inline struct resource *pci_find_resource(struct pci_dev *dev,
1646 struct resource *res)
1648 static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1650 static inline void pci_release_regions(struct pci_dev *dev) { }
1652 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
1654 static inline void pci_block_cfg_access(struct pci_dev *dev) { }
1655 static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev)
1657 static inline void pci_unblock_cfg_access(struct pci_dev *dev) { }
1659 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1661 static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1664 static inline struct pci_dev *pci_get_domain_bus_and_slot(int domain,
1665 unsigned int bus, unsigned int devfn)
1668 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
1669 static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; }
1670 static inline int pci_get_new_domain_nr(void) { return -ENOSYS; }
1672 #define dev_is_pci(d) (false)
1673 #define dev_is_pf(d) (false)
1674 static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags)
1676 static inline int pci_irqd_intx_xlate(struct irq_domain *d,
1677 struct device_node *node,
1679 unsigned int intsize,
1680 unsigned long *out_hwirq,
1681 unsigned int *out_type)
1683 #endif /* CONFIG_PCI */
1685 /* Include architecture-dependent settings and functions */
1687 #include <asm/pci.h>
1689 /* These two functions provide almost identical functionality. Depennding
1690 * on the architecture, one will be implemented as a wrapper around the
1691 * other (in drivers/pci/mmap.c).
1693 * pci_mmap_resource_range() maps a specific BAR, and vm->vm_pgoff
1694 * is expected to be an offset within that region.
1696 * pci_mmap_page_range() is the legacy architecture-specific interface,
1697 * which accepts a "user visible" resource address converted by
1698 * pci_resource_to_user(), as used in the legacy mmap() interface in
1701 int pci_mmap_resource_range(struct pci_dev *dev, int bar,
1702 struct vm_area_struct *vma,
1703 enum pci_mmap_state mmap_state, int write_combine);
1704 int pci_mmap_page_range(struct pci_dev *pdev, int bar,
1705 struct vm_area_struct *vma,
1706 enum pci_mmap_state mmap_state, int write_combine);
1708 #ifndef arch_can_pci_mmap_wc
1709 #define arch_can_pci_mmap_wc() 0
1712 #ifndef arch_can_pci_mmap_io
1713 #define arch_can_pci_mmap_io() 0
1714 #define pci_iobar_pfn(pdev, bar, vma) (-EINVAL)
1716 int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma);
1719 #ifndef pci_root_bus_fwnode
1720 #define pci_root_bus_fwnode(bus) NULL
1724 * These helpers provide future and backwards compatibility
1725 * for accessing popular PCI BAR info
1727 #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1728 #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1729 #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
1730 #define pci_resource_len(dev,bar) \
1731 ((pci_resource_start((dev), (bar)) == 0 && \
1732 pci_resource_end((dev), (bar)) == \
1733 pci_resource_start((dev), (bar))) ? 0 : \
1735 (pci_resource_end((dev), (bar)) - \
1736 pci_resource_start((dev), (bar)) + 1))
1739 * Similar to the helpers above, these manipulate per-pci_dev
1740 * driver-specific data. They are really just a wrapper around
1741 * the generic device structure functions of these calls.
1743 static inline void *pci_get_drvdata(struct pci_dev *pdev)
1745 return dev_get_drvdata(&pdev->dev);
1748 static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
1750 dev_set_drvdata(&pdev->dev, data);
1753 static inline const char *pci_name(const struct pci_dev *pdev)
1755 return dev_name(&pdev->dev);
1760 * Some archs don't want to expose struct resource to userland as-is
1761 * in sysfs and /proc
1763 #ifdef HAVE_ARCH_PCI_RESOURCE_TO_USER
1764 void pci_resource_to_user(const struct pci_dev *dev, int bar,
1765 const struct resource *rsrc,
1766 resource_size_t *start, resource_size_t *end);
1768 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
1769 const struct resource *rsrc, resource_size_t *start,
1770 resource_size_t *end)
1772 *start = rsrc->start;
1775 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1779 * The world is not perfect and supplies us with broken PCI devices.
1780 * For at least a part of these bugs we need a work-around, so both
1781 * generic (drivers/pci/quirks.c) and per-architecture code can define
1782 * fixup hooks to be called for particular buggy devices.
1786 u16 vendor; /* Or PCI_ANY_ID */
1787 u16 device; /* Or PCI_ANY_ID */
1788 u32 class; /* Or PCI_ANY_ID */
1789 unsigned int class_shift; /* should be 0, 8, 16 */
1790 void (*hook)(struct pci_dev *dev);
1793 enum pci_fixup_pass {
1794 pci_fixup_early, /* Before probing BARs */
1795 pci_fixup_header, /* After reading configuration header */
1796 pci_fixup_final, /* Final phase of device fixups */
1797 pci_fixup_enable, /* pci_enable_device() time */
1798 pci_fixup_resume, /* pci_device_resume() */
1799 pci_fixup_suspend, /* pci_device_suspend() */
1800 pci_fixup_resume_early, /* pci_device_resume_early() */
1801 pci_fixup_suspend_late, /* pci_device_suspend_late() */
1804 /* Anonymous variables would be nice... */
1805 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \
1806 class_shift, hook) \
1807 static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \
1808 __attribute__((__section__(#section), aligned((sizeof(void *))))) \
1809 = { vendor, device, class, class_shift, hook };
1811 #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \
1812 class_shift, hook) \
1813 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1814 hook, vendor, device, class, class_shift, hook)
1815 #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \
1816 class_shift, hook) \
1817 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1818 hook, vendor, device, class, class_shift, hook)
1819 #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \
1820 class_shift, hook) \
1821 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1822 hook, vendor, device, class, class_shift, hook)
1823 #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \
1824 class_shift, hook) \
1825 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1826 hook, vendor, device, class, class_shift, hook)
1827 #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \
1828 class_shift, hook) \
1829 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1830 resume##hook, vendor, device, class, class_shift, hook)
1831 #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \
1832 class_shift, hook) \
1833 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1834 resume_early##hook, vendor, device, class, class_shift, hook)
1835 #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \
1836 class_shift, hook) \
1837 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1838 suspend##hook, vendor, device, class, class_shift, hook)
1839 #define DECLARE_PCI_FIXUP_CLASS_SUSPEND_LATE(vendor, device, class, \
1840 class_shift, hook) \
1841 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \
1842 suspend_late##hook, vendor, device, class, class_shift, hook)
1844 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1845 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1846 hook, vendor, device, PCI_ANY_ID, 0, hook)
1847 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1848 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1849 hook, vendor, device, PCI_ANY_ID, 0, hook)
1850 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1851 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1852 hook, vendor, device, PCI_ANY_ID, 0, hook)
1853 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1854 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1855 hook, vendor, device, PCI_ANY_ID, 0, hook)
1856 #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1857 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1858 resume##hook, vendor, device, PCI_ANY_ID, 0, hook)
1859 #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1860 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1861 resume_early##hook, vendor, device, PCI_ANY_ID, 0, hook)
1862 #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1863 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1864 suspend##hook, vendor, device, PCI_ANY_ID, 0, hook)
1865 #define DECLARE_PCI_FIXUP_SUSPEND_LATE(vendor, device, hook) \
1866 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \
1867 suspend_late##hook, vendor, device, PCI_ANY_ID, 0, hook)
1869 #ifdef CONFIG_PCI_QUIRKS
1870 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1871 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
1872 int pci_dev_specific_enable_acs(struct pci_dev *dev);
1874 static inline void pci_fixup_device(enum pci_fixup_pass pass,
1875 struct pci_dev *dev) { }
1876 static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
1881 static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
1887 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
1888 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1889 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
1890 int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name);
1891 int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask,
1893 void pcim_iounmap_regions(struct pci_dev *pdev, int mask);
1895 extern int pci_pci_problems;
1896 #define PCIPCI_FAIL 1 /* No PCI PCI DMA */
1897 #define PCIPCI_TRITON 2
1898 #define PCIPCI_NATOMA 4
1899 #define PCIPCI_VIAETBF 8
1900 #define PCIPCI_VSFX 16
1901 #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1902 #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
1904 extern unsigned long pci_cardbus_io_size;
1905 extern unsigned long pci_cardbus_mem_size;
1906 extern u8 pci_dfl_cache_line_size;
1907 extern u8 pci_cache_line_size;
1909 extern unsigned long pci_hotplug_io_size;
1910 extern unsigned long pci_hotplug_mem_size;
1911 extern unsigned long pci_hotplug_bus_size;
1913 /* Architecture-specific versions may override these (weak) */
1914 void pcibios_disable_device(struct pci_dev *dev);
1915 void pcibios_set_master(struct pci_dev *dev);
1916 int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1917 enum pcie_reset_state state);
1918 int pcibios_add_device(struct pci_dev *dev);
1919 void pcibios_release_device(struct pci_dev *dev);
1920 void pcibios_penalize_isa_irq(int irq, int active);
1921 int pcibios_alloc_irq(struct pci_dev *dev);
1922 void pcibios_free_irq(struct pci_dev *dev);
1924 #ifdef CONFIG_HIBERNATE_CALLBACKS
1925 extern struct dev_pm_ops pcibios_pm_ops;
1928 #if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG)
1929 void __init pci_mmcfg_early_init(void);
1930 void __init pci_mmcfg_late_init(void);
1932 static inline void pci_mmcfg_early_init(void) { }
1933 static inline void pci_mmcfg_late_init(void) { }
1936 int pci_ext_cfg_avail(void);
1938 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1939 void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar);
1941 #ifdef CONFIG_PCI_IOV
1942 int pci_iov_virtfn_bus(struct pci_dev *dev, int id);
1943 int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
1945 int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
1946 void pci_disable_sriov(struct pci_dev *dev);
1947 int pci_iov_add_virtfn(struct pci_dev *dev, int id);
1948 void pci_iov_remove_virtfn(struct pci_dev *dev, int id);
1949 int pci_num_vf(struct pci_dev *dev);
1950 int pci_vfs_assigned(struct pci_dev *dev);
1951 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
1952 int pci_sriov_get_totalvfs(struct pci_dev *dev);
1953 resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno);
1954 void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe);
1956 static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id)
1960 static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id)
1964 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
1966 static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id)
1970 static inline void pci_iov_remove_virtfn(struct pci_dev *dev,
1972 static inline void pci_disable_sriov(struct pci_dev *dev) { }
1973 static inline int pci_num_vf(struct pci_dev *dev) { return 0; }
1974 static inline int pci_vfs_assigned(struct pci_dev *dev)
1976 static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
1978 static inline int pci_sriov_get_totalvfs(struct pci_dev *dev)
1980 static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
1982 static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { }
1985 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)
1986 void pci_hp_create_module_link(struct pci_slot *pci_slot);
1987 void pci_hp_remove_module_link(struct pci_slot *pci_slot);
1991 * pci_pcie_cap - get the saved PCIe capability offset
1994 * PCIe capability offset is calculated at PCI device initialization
1995 * time and saved in the data structure. This function returns saved
1996 * PCIe capability offset. Using this instead of pci_find_capability()
1997 * reduces unnecessary search in the PCI configuration space. If you
1998 * need to calculate PCIe capability offset from raw device for some
1999 * reasons, please use pci_find_capability() instead.
2001 static inline int pci_pcie_cap(struct pci_dev *dev)
2003 return dev->pcie_cap;
2007 * pci_is_pcie - check if the PCI device is PCI Express capable
2010 * Returns: true if the PCI device is PCI Express capable, false otherwise.
2012 static inline bool pci_is_pcie(struct pci_dev *dev)
2014 return pci_pcie_cap(dev);
2018 * pcie_caps_reg - get the PCIe Capabilities Register
2021 static inline u16 pcie_caps_reg(const struct pci_dev *dev)
2023 return dev->pcie_flags_reg;
2027 * pci_pcie_type - get the PCIe device/port type
2030 static inline int pci_pcie_type(const struct pci_dev *dev)
2032 return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
2035 static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev)
2038 if (!pci_is_pcie(dev))
2040 if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
2042 if (!dev->bus->self)
2044 dev = dev->bus->self;
2049 void pci_request_acs(void);
2050 bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags);
2051 bool pci_acs_path_enabled(struct pci_dev *start,
2052 struct pci_dev *end, u16 acs_flags);
2053 int pci_enable_atomic_ops_to_root(struct pci_dev *dev, u32 cap_mask);
2055 #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */
2056 #define PCI_VPD_LRDT_ID(x) ((x) | PCI_VPD_LRDT)
2058 /* Large Resource Data Type Tag Item Names */
2059 #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */
2060 #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */
2061 #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */
2063 #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING)
2064 #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA)
2065 #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)
2067 /* Small Resource Data Type Tag Item Names */
2068 #define PCI_VPD_STIN_END 0x0f /* End */
2070 #define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3)
2072 #define PCI_VPD_SRDT_TIN_MASK 0x78
2073 #define PCI_VPD_SRDT_LEN_MASK 0x07
2074 #define PCI_VPD_LRDT_TIN_MASK 0x7f
2076 #define PCI_VPD_LRDT_TAG_SIZE 3
2077 #define PCI_VPD_SRDT_TAG_SIZE 1
2079 #define PCI_VPD_INFO_FLD_HDR_SIZE 3
2081 #define PCI_VPD_RO_KEYWORD_PARTNO "PN"
2082 #define PCI_VPD_RO_KEYWORD_MFR_ID "MN"
2083 #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0"
2084 #define PCI_VPD_RO_KEYWORD_CHKSUM "RV"
2087 * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
2088 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
2090 * Returns the extracted Large Resource Data Type length.
2092 static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
2094 return (u16)lrdt[1] + ((u16)lrdt[2] << 8);
2098 * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item
2099 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
2101 * Returns the extracted Large Resource Data Type Tag item.
2103 static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt)
2105 return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK);
2109 * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
2110 * @srdt: Pointer to the beginning of the Small Resource Data Type tag
2112 * Returns the extracted Small Resource Data Type length.
2114 static inline u8 pci_vpd_srdt_size(const u8 *srdt)
2116 return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
2120 * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item
2121 * @srdt: Pointer to the beginning of the Small Resource Data Type tag
2123 * Returns the extracted Small Resource Data Type Tag Item.
2125 static inline u8 pci_vpd_srdt_tag(const u8 *srdt)
2127 return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3;
2131 * pci_vpd_info_field_size - Extracts the information field length
2132 * @lrdt: Pointer to the beginning of an information field header
2134 * Returns the extracted information field length.
2136 static inline u8 pci_vpd_info_field_size(const u8 *info_field)
2138 return info_field[2];
2142 * pci_vpd_find_tag - Locates the Resource Data Type tag provided
2143 * @buf: Pointer to buffered vpd data
2144 * @off: The offset into the buffer at which to begin the search
2145 * @len: The length of the vpd buffer
2146 * @rdt: The Resource Data Type to search for
2148 * Returns the index where the Resource Data Type was found or
2149 * -ENOENT otherwise.
2151 int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt);
2154 * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
2155 * @buf: Pointer to buffered vpd data
2156 * @off: The offset into the buffer at which to begin the search
2157 * @len: The length of the buffer area, relative to off, in which to search
2158 * @kw: The keyword to search for
2160 * Returns the index where the information field keyword was found or
2161 * -ENOENT otherwise.
2163 int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
2164 unsigned int len, const char *kw);
2166 /* PCI <-> OF binding helpers */
2170 void pci_set_of_node(struct pci_dev *dev);
2171 void pci_release_of_node(struct pci_dev *dev);
2172 void pci_set_bus_of_node(struct pci_bus *bus);
2173 void pci_release_bus_of_node(struct pci_bus *bus);
2174 struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus);
2175 int pci_parse_request_of_pci_ranges(struct device *dev,
2176 struct list_head *resources,
2177 struct resource **bus_range);
2179 /* Arch may override this (weak) */
2180 struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus);
2182 static inline struct device_node *
2183 pci_device_to_OF_node(const struct pci_dev *pdev)
2185 return pdev ? pdev->dev.of_node : NULL;
2188 static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
2190 return bus ? bus->dev.of_node : NULL;
2193 #else /* CONFIG_OF */
2194 static inline void pci_set_of_node(struct pci_dev *dev) { }
2195 static inline void pci_release_of_node(struct pci_dev *dev) { }
2196 static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
2197 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
2198 static inline struct device_node *
2199 pci_device_to_OF_node(const struct pci_dev *pdev) { return NULL; }
2200 static inline struct irq_domain *
2201 pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; }
2202 static inline int pci_parse_request_of_pci_ranges(struct device *dev,
2203 struct list_head *resources,
2204 struct resource **bus_range)
2208 #endif /* CONFIG_OF */
2211 struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus);
2214 pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *));
2216 static inline struct irq_domain *
2217 pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; }
2221 static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev)
2223 return pdev->dev.archdata.edev;
2227 void pci_add_dma_alias(struct pci_dev *dev, u8 devfn);
2228 bool pci_devs_are_dma_aliases(struct pci_dev *dev1, struct pci_dev *dev2);
2229 int pci_for_each_dma_alias(struct pci_dev *pdev,
2230 int (*fn)(struct pci_dev *pdev,
2231 u16 alias, void *data), void *data);
2233 /* Helper functions for operation of device flag */
2234 static inline void pci_set_dev_assigned(struct pci_dev *pdev)
2236 pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
2238 static inline void pci_clear_dev_assigned(struct pci_dev *pdev)
2240 pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
2242 static inline bool pci_is_dev_assigned(struct pci_dev *pdev)
2244 return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED;
2248 * pci_ari_enabled - query ARI forwarding status
2251 * Returns true if ARI forwarding is enabled.
2253 static inline bool pci_ari_enabled(struct pci_bus *bus)
2255 return bus->self && bus->self->ari_enabled;
2259 * pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain
2260 * @pdev: PCI device to check
2262 * Walk upwards from @pdev and check for each encountered bridge if it's part
2263 * of a Thunderbolt controller. Reaching the host bridge means @pdev is not
2264 * Thunderbolt-attached. (But rather soldered to the mainboard usually.)
2266 static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
2268 struct pci_dev *parent = pdev;
2270 if (pdev->is_thunderbolt)
2273 while ((parent = pci_upstream_bridge(parent)))
2274 if (parent->is_thunderbolt)
2280 #if defined(CONFIG_PCIEAER) || defined(CONFIG_EEH)
2281 void pci_uevent_ers(struct pci_dev *pdev, enum pci_ers_result err_type);
2284 /* Provide the legacy pci_dma_* API */
2285 #include <linux/pci-dma-compat.h>
2287 #define pci_printk(level, pdev, fmt, arg...) \
2288 dev_printk(level, &(pdev)->dev, fmt, ##arg)
2290 #define pci_emerg(pdev, fmt, arg...) dev_emerg(&(pdev)->dev, fmt, ##arg)
2291 #define pci_alert(pdev, fmt, arg...) dev_alert(&(pdev)->dev, fmt, ##arg)
2292 #define pci_crit(pdev, fmt, arg...) dev_crit(&(pdev)->dev, fmt, ##arg)
2293 #define pci_err(pdev, fmt, arg...) dev_err(&(pdev)->dev, fmt, ##arg)
2294 #define pci_warn(pdev, fmt, arg...) dev_warn(&(pdev)->dev, fmt, ##arg)
2295 #define pci_notice(pdev, fmt, arg...) dev_notice(&(pdev)->dev, fmt, ##arg)
2296 #define pci_info(pdev, fmt, arg...) dev_info(&(pdev)->dev, fmt, ##arg)
2297 #define pci_dbg(pdev, fmt, arg...) dev_dbg(&(pdev)->dev, fmt, ##arg)
2299 #endif /* LINUX_PCI_H */