1 /* SPDX-License-Identifier: GPL-2.0 */
5 * PCI defines and function prototypes
6 * Copyright 1994, Drew Eckhardt
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,
220 PCI_BUS_FLAGS_NO_EXTCFG = (__force pci_bus_flags_t) 8,
223 /* Values from Link Status register, PCIe r3.1, sec 7.8.8 */
224 enum pcie_link_width {
225 PCIE_LNK_WIDTH_RESRV = 0x00,
233 PCIE_LNK_WIDTH_UNKNOWN = 0xff,
236 /* Based on the PCI Hotplug Spec, but some values are made up by us */
238 PCI_SPEED_33MHz = 0x00,
239 PCI_SPEED_66MHz = 0x01,
240 PCI_SPEED_66MHz_PCIX = 0x02,
241 PCI_SPEED_100MHz_PCIX = 0x03,
242 PCI_SPEED_133MHz_PCIX = 0x04,
243 PCI_SPEED_66MHz_PCIX_ECC = 0x05,
244 PCI_SPEED_100MHz_PCIX_ECC = 0x06,
245 PCI_SPEED_133MHz_PCIX_ECC = 0x07,
246 PCI_SPEED_66MHz_PCIX_266 = 0x09,
247 PCI_SPEED_100MHz_PCIX_266 = 0x0a,
248 PCI_SPEED_133MHz_PCIX_266 = 0x0b,
254 PCI_SPEED_66MHz_PCIX_533 = 0x11,
255 PCI_SPEED_100MHz_PCIX_533 = 0x12,
256 PCI_SPEED_133MHz_PCIX_533 = 0x13,
257 PCIE_SPEED_2_5GT = 0x14,
258 PCIE_SPEED_5_0GT = 0x15,
259 PCIE_SPEED_8_0GT = 0x16,
260 PCIE_SPEED_16_0GT = 0x17,
261 PCI_SPEED_UNKNOWN = 0xff,
264 enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
265 enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
267 struct pci_cap_saved_data {
274 struct pci_cap_saved_state {
275 struct hlist_node next;
276 struct pci_cap_saved_data cap;
280 struct pcie_link_state;
285 /* The pci_dev structure describes PCI devices */
287 struct list_head bus_list; /* Node in per-bus list */
288 struct pci_bus *bus; /* Bus this device is on */
289 struct pci_bus *subordinate; /* Bus this device bridges to */
291 void *sysdata; /* Hook for sys-specific extension */
292 struct proc_dir_entry *procent; /* Device entry in /proc/bus/pci */
293 struct pci_slot *slot; /* Physical slot this device is in */
295 unsigned int devfn; /* Encoded device & function index */
296 unsigned short vendor;
297 unsigned short device;
298 unsigned short subsystem_vendor;
299 unsigned short subsystem_device;
300 unsigned int class; /* 3 bytes: (base,sub,prog-if) */
301 u8 revision; /* PCI revision, low byte of class word */
302 u8 hdr_type; /* PCI header type (`multi' flag masked out) */
303 #ifdef CONFIG_PCIEAER
304 u16 aer_cap; /* AER capability offset */
306 u8 pcie_cap; /* PCIe capability offset */
307 u8 msi_cap; /* MSI capability offset */
308 u8 msix_cap; /* MSI-X capability offset */
309 u8 pcie_mpss:3; /* PCIe Max Payload Size Supported */
310 u8 rom_base_reg; /* Config register controlling ROM */
311 u8 pin; /* Interrupt pin this device uses */
312 u16 pcie_flags_reg; /* Cached PCIe Capabilities Register */
313 unsigned long *dma_alias_mask;/* Mask of enabled devfn aliases */
315 struct pci_driver *driver; /* Driver bound to this device */
316 u64 dma_mask; /* Mask of the bits of bus address this
317 device implements. Normally this is
318 0xffffffff. You only need to change
319 this if your device has broken DMA
320 or supports 64-bit transfers. */
322 struct device_dma_parameters dma_parms;
324 pci_power_t current_state; /* Current operating state. In ACPI,
325 this is D0-D3, D0 being fully
326 functional, and D3 being off. */
327 u8 pm_cap; /* PM capability offset */
328 unsigned int pme_support:5; /* Bitmask of states from which PME#
330 unsigned int pme_poll:1; /* Poll device's PME status bit */
331 unsigned int d1_support:1; /* Low power state D1 is supported */
332 unsigned int d2_support:1; /* Low power state D2 is supported */
333 unsigned int no_d1d2:1; /* D1 and D2 are forbidden */
334 unsigned int no_d3cold:1; /* D3cold is forbidden */
335 unsigned int bridge_d3:1; /* Allow D3 for bridge */
336 unsigned int d3cold_allowed:1; /* D3cold is allowed by user */
337 unsigned int mmio_always_on:1; /* Disallow turning off io/mem
338 decoding during BAR sizing */
339 unsigned int wakeup_prepared:1;
340 unsigned int runtime_d3cold:1; /* Whether go through runtime
341 D3cold, not set for devices
342 powered on/off by the
343 corresponding bridge */
344 unsigned int ignore_hotplug:1; /* Ignore hotplug events */
345 unsigned int hotplug_user_indicators:1; /* SlotCtl indicators
346 controlled exclusively by
348 unsigned int d3_delay; /* D3->D0 transition time in ms */
349 unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */
351 #ifdef CONFIG_PCIEASPM
352 struct pcie_link_state *link_state; /* ASPM link state */
353 unsigned int ltr_path:1; /* Latency Tolerance Reporting
354 supported from root to here */
357 pci_channel_state_t error_state; /* Current connectivity state */
358 struct device dev; /* Generic device interface */
360 int cfg_size; /* Size of config space */
363 * Instead of touching interrupt line and base address registers
364 * directly, use the values stored here. They might be different!
367 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
369 bool match_driver; /* Skip attaching driver */
371 unsigned int transparent:1; /* Subtractive decode bridge */
372 unsigned int multifunction:1; /* Multi-function device */
374 unsigned int is_added:1;
375 unsigned int is_busmaster:1; /* Is busmaster */
376 unsigned int no_msi:1; /* May not use MSI */
377 unsigned int no_64bit_msi:1; /* May only use 32-bit MSIs */
378 unsigned int block_cfg_access:1; /* Config space access blocked */
379 unsigned int broken_parity_status:1; /* Generates false positive parity */
380 unsigned int irq_reroute_variant:2; /* Needs IRQ rerouting variant */
381 unsigned int msi_enabled:1;
382 unsigned int msix_enabled:1;
383 unsigned int ari_enabled:1; /* ARI forwarding */
384 unsigned int ats_enabled:1; /* Address Translation Svc */
385 unsigned int pasid_enabled:1; /* Process Address Space ID */
386 unsigned int pri_enabled:1; /* Page Request Interface */
387 unsigned int is_managed:1;
388 unsigned int needs_freset:1; /* Requires fundamental reset */
389 unsigned int state_saved:1;
390 unsigned int is_physfn:1;
391 unsigned int is_virtfn:1;
392 unsigned int reset_fn:1;
393 unsigned int is_hotplug_bridge:1;
394 unsigned int is_thunderbolt:1; /* Thunderbolt controller */
395 unsigned int __aer_firmware_first_valid:1;
396 unsigned int __aer_firmware_first:1;
397 unsigned int broken_intx_masking:1; /* INTx masking can't be used */
398 unsigned int io_window_1k:1; /* Intel bridge 1K I/O windows */
399 unsigned int irq_managed:1;
400 unsigned int has_secondary_link:1;
401 unsigned int non_compliant_bars:1; /* Broken BARs; ignore them */
402 unsigned int is_probed:1; /* Device probing in progress */
403 pci_dev_flags_t dev_flags;
404 atomic_t enable_cnt; /* pci_enable_device has been called */
406 u32 saved_config_space[16]; /* Config space saved at suspend time */
407 struct hlist_head saved_cap_space;
408 struct bin_attribute *rom_attr; /* Attribute descriptor for sysfs ROM entry */
409 int rom_attr_enabled; /* Display of ROM attribute enabled? */
410 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */
411 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */
413 #ifdef CONFIG_HOTPLUG_PCI_PCIE
414 unsigned int broken_cmd_compl:1; /* No compl for some cmds */
416 #ifdef CONFIG_PCIE_PTM
417 unsigned int ptm_root:1;
418 unsigned int ptm_enabled:1;
421 #ifdef CONFIG_PCI_MSI
422 const struct attribute_group **msi_irq_groups;
425 #ifdef CONFIG_PCI_ATS
427 struct pci_sriov *sriov; /* PF: SR-IOV info */
428 struct pci_dev *physfn; /* VF: related PF */
430 u16 ats_cap; /* ATS Capability offset */
431 u8 ats_stu; /* ATS Smallest Translation Unit */
432 atomic_t ats_ref_cnt; /* Number of VFs with ATS enabled */
434 #ifdef CONFIG_PCI_PRI
435 u32 pri_reqs_alloc; /* Number of PRI requests allocated */
437 #ifdef CONFIG_PCI_PASID
440 phys_addr_t rom; /* Physical address if not from BAR */
441 size_t romlen; /* Length if not from BAR */
442 char *driver_override; /* Driver name to force a match */
444 unsigned long priv_flags; /* Private flags for the PCI driver */
447 static inline struct pci_dev *pci_physfn(struct pci_dev *dev)
449 #ifdef CONFIG_PCI_IOV
456 struct pci_dev *pci_alloc_dev(struct pci_bus *bus);
458 #define to_pci_dev(n) container_of(n, struct pci_dev, dev)
459 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL)
461 static inline int pci_channel_offline(struct pci_dev *pdev)
463 return (pdev->error_state != pci_channel_io_normal);
466 struct pci_host_bridge {
468 struct pci_bus *bus; /* Root bus */
472 struct list_head windows; /* resource_entry */
473 u8 (*swizzle_irq)(struct pci_dev *, u8 *); /* Platform IRQ swizzler */
474 int (*map_irq)(const struct pci_dev *, u8, u8);
475 void (*release_fn)(struct pci_host_bridge *);
477 struct msi_controller *msi;
478 unsigned int ignore_reset_delay:1; /* For entire hierarchy */
479 unsigned int no_ext_tags:1; /* No Extended Tags */
480 unsigned int native_aer:1; /* OS may use PCIe AER */
481 unsigned int native_pcie_hotplug:1; /* OS may use PCIe hotplug */
482 unsigned int native_shpc_hotplug:1; /* OS may use SHPC hotplug */
483 unsigned int native_pme:1; /* OS may use PCIe PME */
484 unsigned int native_ltr:1; /* OS may use PCIe LTR */
485 /* Resource alignment requirements */
486 resource_size_t (*align_resource)(struct pci_dev *dev,
487 const struct resource *res,
488 resource_size_t start,
489 resource_size_t size,
490 resource_size_t align);
491 unsigned long private[0] ____cacheline_aligned;
494 #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev)
496 static inline void *pci_host_bridge_priv(struct pci_host_bridge *bridge)
498 return (void *)bridge->private;
501 static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv)
503 return container_of(priv, struct pci_host_bridge, private);
506 struct pci_host_bridge *pci_alloc_host_bridge(size_t priv);
507 struct pci_host_bridge *devm_pci_alloc_host_bridge(struct device *dev,
509 void pci_free_host_bridge(struct pci_host_bridge *bridge);
510 struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
512 void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
513 void (*release_fn)(struct pci_host_bridge *),
516 int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge);
519 * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond
520 * to P2P or CardBus bridge windows) go in a table. Additional ones (for
521 * buses below host bridges or subtractive decode bridges) go in the list.
522 * Use pci_bus_for_each_resource() to iterate through all the resources.
526 * PCI_SUBTRACTIVE_DECODE means the bridge forwards the window implicitly
527 * and there's no way to program the bridge with the details of the window.
528 * This does not apply to ACPI _CRS windows, even with the _DEC subtractive-
529 * decode bit set, because they are explicit and can be programmed with _SRS.
531 #define PCI_SUBTRACTIVE_DECODE 0x1
533 struct pci_bus_resource {
534 struct list_head list;
535 struct resource *res;
539 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */
542 struct list_head node; /* Node in list of buses */
543 struct pci_bus *parent; /* Parent bus this bridge is on */
544 struct list_head children; /* List of child buses */
545 struct list_head devices; /* List of devices on this bus */
546 struct pci_dev *self; /* Bridge device as seen by parent */
547 struct list_head slots; /* List of slots on this bus;
548 protected by pci_slot_mutex */
549 struct resource *resource[PCI_BRIDGE_RESOURCE_NUM];
550 struct list_head resources; /* Address space routed to this bus */
551 struct resource busn_res; /* Bus numbers routed to this bus */
553 struct pci_ops *ops; /* Configuration access functions */
554 struct msi_controller *msi; /* MSI controller */
555 void *sysdata; /* Hook for sys-specific extension */
556 struct proc_dir_entry *procdir; /* Directory entry in /proc/bus/pci */
558 unsigned char number; /* Bus number */
559 unsigned char primary; /* Number of primary bridge */
560 unsigned char max_bus_speed; /* enum pci_bus_speed */
561 unsigned char cur_bus_speed; /* enum pci_bus_speed */
562 #ifdef CONFIG_PCI_DOMAINS_GENERIC
568 unsigned short bridge_ctl; /* Manage NO_ISA/FBB/et al behaviors */
569 pci_bus_flags_t bus_flags; /* Inherited by child buses */
570 struct device *bridge;
572 struct bin_attribute *legacy_io; /* Legacy I/O for this bus */
573 struct bin_attribute *legacy_mem; /* Legacy mem */
574 unsigned int is_added:1;
577 #define to_pci_bus(n) container_of(n, struct pci_bus, dev)
580 * Returns true if the PCI bus is root (behind host-PCI bridge),
583 * Some code assumes that "bus->self == NULL" means that bus is a root bus.
584 * This is incorrect because "virtual" buses added for SR-IOV (via
585 * virtfn_add_bus()) have "bus->self == NULL" but are not root buses.
587 static inline bool pci_is_root_bus(struct pci_bus *pbus)
589 return !(pbus->parent);
593 * pci_is_bridge - check if the PCI device is a bridge
596 * Return true if the PCI device is bridge whether it has subordinate
599 static inline bool pci_is_bridge(struct pci_dev *dev)
601 return dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
602 dev->hdr_type == PCI_HEADER_TYPE_CARDBUS;
605 #define for_each_pci_bridge(dev, bus) \
606 list_for_each_entry(dev, &bus->devices, bus_list) \
607 if (!pci_is_bridge(dev)) {} else
609 static inline struct pci_dev *pci_upstream_bridge(struct pci_dev *dev)
611 dev = pci_physfn(dev);
612 if (pci_is_root_bus(dev->bus))
615 return dev->bus->self;
618 struct device *pci_get_host_bridge_device(struct pci_dev *dev);
619 void pci_put_host_bridge_device(struct device *dev);
621 #ifdef CONFIG_PCI_MSI
622 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev)
624 return pci_dev->msi_enabled || pci_dev->msix_enabled;
627 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; }
630 /* Error values that may be returned by PCI functions */
631 #define PCIBIOS_SUCCESSFUL 0x00
632 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81
633 #define PCIBIOS_BAD_VENDOR_ID 0x83
634 #define PCIBIOS_DEVICE_NOT_FOUND 0x86
635 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87
636 #define PCIBIOS_SET_FAILED 0x88
637 #define PCIBIOS_BUFFER_TOO_SMALL 0x89
639 /* Translate above to generic errno for passing back through non-PCI code */
640 static inline int pcibios_err_to_errno(int err)
642 if (err <= PCIBIOS_SUCCESSFUL)
643 return err; /* Assume already errno */
646 case PCIBIOS_FUNC_NOT_SUPPORTED:
648 case PCIBIOS_BAD_VENDOR_ID:
650 case PCIBIOS_DEVICE_NOT_FOUND:
652 case PCIBIOS_BAD_REGISTER_NUMBER:
654 case PCIBIOS_SET_FAILED:
656 case PCIBIOS_BUFFER_TOO_SMALL:
663 /* Low-level architecture-dependent routines */
666 int (*add_bus)(struct pci_bus *bus);
667 void (*remove_bus)(struct pci_bus *bus);
668 void __iomem *(*map_bus)(struct pci_bus *bus, unsigned int devfn, int where);
669 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val);
670 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val);
674 * ACPI needs to be able to access PCI config space before we've done a
675 * PCI bus scan and created pci_bus structures.
677 int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn,
678 int reg, int len, u32 *val);
679 int raw_pci_write(unsigned int domain, unsigned int bus, unsigned int devfn,
680 int reg, int len, u32 val);
682 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
683 typedef u64 pci_bus_addr_t;
685 typedef u32 pci_bus_addr_t;
688 struct pci_bus_region {
689 pci_bus_addr_t start;
694 spinlock_t lock; /* Protects list, index */
695 struct list_head list; /* For IDs added at runtime */
700 * PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
701 * a set of callbacks in struct pci_error_handlers, that device driver
702 * will be notified of PCI bus errors, and will be driven to recovery
703 * when an error occurs.
706 typedef unsigned int __bitwise pci_ers_result_t;
708 enum pci_ers_result {
709 /* No result/none/not supported in device driver */
710 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
712 /* Device driver can recover without slot reset */
713 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
715 /* Device driver wants slot to be reset */
716 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
718 /* Device has completely failed, is unrecoverable */
719 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
721 /* Device driver is fully recovered and operational */
722 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
724 /* No AER capabilities registered for the driver */
725 PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6,
728 /* PCI bus error event callbacks */
729 struct pci_error_handlers {
730 /* PCI bus error detected on this device */
731 pci_ers_result_t (*error_detected)(struct pci_dev *dev,
732 enum pci_channel_state error);
734 /* MMIO has been re-enabled, but not DMA */
735 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
737 /* PCI slot has been reset */
738 pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
740 /* PCI function reset prepare or completed */
741 void (*reset_prepare)(struct pci_dev *dev);
742 void (*reset_done)(struct pci_dev *dev);
744 /* Device driver may resume normal operations */
745 void (*resume)(struct pci_dev *dev);
751 struct list_head node;
753 const struct pci_device_id *id_table; /* Must be non-NULL for probe to be called */
754 int (*probe)(struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */
755 void (*remove)(struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */
756 int (*suspend)(struct pci_dev *dev, pm_message_t state); /* Device suspended */
757 int (*suspend_late)(struct pci_dev *dev, pm_message_t state);
758 int (*resume_early)(struct pci_dev *dev);
759 int (*resume) (struct pci_dev *dev); /* Device woken up */
760 void (*shutdown) (struct pci_dev *dev);
761 int (*sriov_configure) (struct pci_dev *dev, int num_vfs); /* On PF */
762 const struct pci_error_handlers *err_handler;
763 const struct attribute_group **groups;
764 struct device_driver driver;
765 struct pci_dynids dynids;
768 #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver)
771 * PCI_DEVICE - macro used to describe a specific PCI device
772 * @vend: the 16 bit PCI Vendor ID
773 * @dev: the 16 bit PCI Device ID
775 * This macro is used to create a struct pci_device_id that matches a
776 * specific device. The subvendor and subdevice fields will be set to
779 #define PCI_DEVICE(vend,dev) \
780 .vendor = (vend), .device = (dev), \
781 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
784 * PCI_DEVICE_SUB - macro used to describe a specific PCI device with subsystem
785 * @vend: the 16 bit PCI Vendor ID
786 * @dev: the 16 bit PCI Device ID
787 * @subvend: the 16 bit PCI Subvendor ID
788 * @subdev: the 16 bit PCI Subdevice ID
790 * This macro is used to create a struct pci_device_id that matches a
791 * specific device with subsystem information.
793 #define PCI_DEVICE_SUB(vend, dev, subvend, subdev) \
794 .vendor = (vend), .device = (dev), \
795 .subvendor = (subvend), .subdevice = (subdev)
798 * PCI_DEVICE_CLASS - macro used to describe a specific PCI device class
799 * @dev_class: the class, subclass, prog-if triple for this device
800 * @dev_class_mask: the class mask for this device
802 * This macro is used to create a struct pci_device_id that matches a
803 * specific PCI class. The vendor, device, subvendor, and subdevice
804 * fields will be set to PCI_ANY_ID.
806 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
807 .class = (dev_class), .class_mask = (dev_class_mask), \
808 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
809 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID
812 * PCI_VDEVICE - macro used to describe a specific PCI device in short form
813 * @vend: the vendor name
814 * @dev: the 16 bit PCI Device ID
816 * This macro is used to create a struct pci_device_id that matches a
817 * specific PCI device. The subvendor, and subdevice fields will be set
818 * to PCI_ANY_ID. The macro allows the next field to follow as the device
821 #define PCI_VDEVICE(vend, dev) \
822 .vendor = PCI_VENDOR_ID_##vend, .device = (dev), \
823 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, 0, 0
826 PCI_REASSIGN_ALL_RSRC = 0x00000001, /* Ignore firmware setup */
827 PCI_REASSIGN_ALL_BUS = 0x00000002, /* Reassign all bus numbers */
828 PCI_PROBE_ONLY = 0x00000004, /* Use existing setup */
829 PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, /* Don't do ISA alignment */
830 PCI_ENABLE_PROC_DOMAINS = 0x00000010, /* Enable domains in /proc */
831 PCI_COMPAT_DOMAIN_0 = 0x00000020, /* ... except domain 0 */
832 PCI_SCAN_ALL_PCIE_DEVS = 0x00000040, /* Scan all, not just dev 0 */
835 /* These external functions are only available when PCI support is enabled */
838 extern unsigned int pci_flags;
840 static inline void pci_set_flags(int flags) { pci_flags = flags; }
841 static inline void pci_add_flags(int flags) { pci_flags |= flags; }
842 static inline void pci_clear_flags(int flags) { pci_flags &= ~flags; }
843 static inline int pci_has_flag(int flag) { return pci_flags & flag; }
845 void pcie_bus_configure_settings(struct pci_bus *bus);
847 enum pcie_bus_config_types {
848 PCIE_BUS_TUNE_OFF, /* Don't touch MPS at all */
849 PCIE_BUS_DEFAULT, /* Ensure MPS matches upstream bridge */
850 PCIE_BUS_SAFE, /* Use largest MPS boot-time devices support */
851 PCIE_BUS_PERFORMANCE, /* Use MPS and MRRS for best performance */
852 PCIE_BUS_PEER2PEER, /* Set MPS = 128 for all devices */
855 extern enum pcie_bus_config_types pcie_bus_config;
857 extern struct bus_type pci_bus_type;
859 /* Do NOT directly access these two variables, unless you are arch-specific PCI
860 * code, or PCI core code. */
861 extern struct list_head pci_root_buses; /* List of all known PCI buses */
862 /* Some device drivers need know if PCI is initiated */
863 int no_pci_devices(void);
865 void pcibios_resource_survey_bus(struct pci_bus *bus);
866 void pcibios_bus_add_device(struct pci_dev *pdev);
867 void pcibios_add_bus(struct pci_bus *bus);
868 void pcibios_remove_bus(struct pci_bus *bus);
869 void pcibios_fixup_bus(struct pci_bus *);
870 int __must_check pcibios_enable_device(struct pci_dev *, int mask);
871 /* Architecture-specific versions may override this (weak) */
872 char *pcibios_setup(char *str);
874 /* Used only when drivers/pci/setup.c is used */
875 resource_size_t pcibios_align_resource(void *, const struct resource *,
879 /* Weak but can be overriden by arch */
880 void pci_fixup_cardbus(struct pci_bus *);
882 /* Generic PCI functions used internally */
884 void pcibios_resource_to_bus(struct pci_bus *bus, struct pci_bus_region *region,
885 struct resource *res);
886 void pcibios_bus_to_resource(struct pci_bus *bus, struct resource *res,
887 struct pci_bus_region *region);
888 void pcibios_scan_specific_bus(int busn);
889 struct pci_bus *pci_find_bus(int domain, int busnr);
890 void pci_bus_add_devices(const struct pci_bus *bus);
891 struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata);
892 struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
893 struct pci_ops *ops, void *sysdata,
894 struct list_head *resources);
895 int pci_host_probe(struct pci_host_bridge *bridge);
896 int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int busmax);
897 int pci_bus_update_busn_res_end(struct pci_bus *b, int busmax);
898 void pci_bus_release_busn_res(struct pci_bus *b);
899 struct pci_bus *pci_scan_root_bus(struct device *parent, int bus,
900 struct pci_ops *ops, void *sysdata,
901 struct list_head *resources);
902 int pci_scan_root_bus_bridge(struct pci_host_bridge *bridge);
903 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
905 void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
906 struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
908 struct hotplug_slot *hotplug);
909 void pci_destroy_slot(struct pci_slot *slot);
911 void pci_dev_assign_slot(struct pci_dev *dev);
913 static inline void pci_dev_assign_slot(struct pci_dev *dev) { }
915 int pci_scan_slot(struct pci_bus *bus, int devfn);
916 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn);
917 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus);
918 unsigned int pci_scan_child_bus(struct pci_bus *bus);
919 void pci_bus_add_device(struct pci_dev *dev);
920 void pci_read_bridge_bases(struct pci_bus *child);
921 struct resource *pci_find_parent_resource(const struct pci_dev *dev,
922 struct resource *res);
923 struct pci_dev *pci_find_pcie_root_port(struct pci_dev *dev);
924 u8 pci_swizzle_interrupt_pin(const struct pci_dev *dev, u8 pin);
925 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge);
926 u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp);
927 struct pci_dev *pci_dev_get(struct pci_dev *dev);
928 void pci_dev_put(struct pci_dev *dev);
929 void pci_remove_bus(struct pci_bus *b);
930 void pci_stop_and_remove_bus_device(struct pci_dev *dev);
931 void pci_stop_and_remove_bus_device_locked(struct pci_dev *dev);
932 void pci_stop_root_bus(struct pci_bus *bus);
933 void pci_remove_root_bus(struct pci_bus *bus);
934 void pci_setup_cardbus(struct pci_bus *bus);
935 void pcibios_setup_bridge(struct pci_bus *bus, unsigned long type);
936 void pci_sort_breadthfirst(void);
937 #define dev_is_pci(d) ((d)->bus == &pci_bus_type)
938 #define dev_is_pf(d) ((dev_is_pci(d) ? to_pci_dev(d)->is_physfn : false))
940 /* Generic PCI functions exported to card drivers */
942 enum pci_lost_interrupt_reason {
943 PCI_LOST_IRQ_NO_INFORMATION = 0,
944 PCI_LOST_IRQ_DISABLE_MSI,
945 PCI_LOST_IRQ_DISABLE_MSIX,
946 PCI_LOST_IRQ_DISABLE_ACPI,
948 enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
949 int pci_find_capability(struct pci_dev *dev, int cap);
950 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
951 int pci_find_ext_capability(struct pci_dev *dev, int cap);
952 int pci_find_next_ext_capability(struct pci_dev *dev, int pos, int cap);
953 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap);
954 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap);
955 struct pci_bus *pci_find_next_bus(const struct pci_bus *from);
957 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device,
958 struct pci_dev *from);
959 struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device,
960 unsigned int ss_vendor, unsigned int ss_device,
961 struct pci_dev *from);
962 struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn);
963 struct pci_dev *pci_get_domain_bus_and_slot(int domain, unsigned int bus,
965 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from);
966 int pci_dev_present(const struct pci_device_id *ids);
968 int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn,
970 int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn,
971 int where, u16 *val);
972 int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn,
973 int where, u32 *val);
974 int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn,
976 int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn,
978 int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn,
981 int pci_generic_config_read(struct pci_bus *bus, unsigned int devfn,
982 int where, int size, u32 *val);
983 int pci_generic_config_write(struct pci_bus *bus, unsigned int devfn,
984 int where, int size, u32 val);
985 int pci_generic_config_read32(struct pci_bus *bus, unsigned int devfn,
986 int where, int size, u32 *val);
987 int pci_generic_config_write32(struct pci_bus *bus, unsigned int devfn,
988 int where, int size, u32 val);
990 struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops);
992 int pci_read_config_byte(const struct pci_dev *dev, int where, u8 *val);
993 int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val);
994 int pci_read_config_dword(const struct pci_dev *dev, int where, u32 *val);
995 int pci_write_config_byte(const struct pci_dev *dev, int where, u8 val);
996 int pci_write_config_word(const struct pci_dev *dev, int where, u16 val);
997 int pci_write_config_dword(const struct pci_dev *dev, int where, u32 val);
999 int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val);
1000 int pcie_capability_read_dword(struct pci_dev *dev, int pos, u32 *val);
1001 int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val);
1002 int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val);
1003 int pcie_capability_clear_and_set_word(struct pci_dev *dev, int pos,
1004 u16 clear, u16 set);
1005 int pcie_capability_clear_and_set_dword(struct pci_dev *dev, int pos,
1006 u32 clear, u32 set);
1008 static inline int pcie_capability_set_word(struct pci_dev *dev, int pos,
1011 return pcie_capability_clear_and_set_word(dev, pos, 0, set);
1014 static inline int pcie_capability_set_dword(struct pci_dev *dev, int pos,
1017 return pcie_capability_clear_and_set_dword(dev, pos, 0, set);
1020 static inline int pcie_capability_clear_word(struct pci_dev *dev, int pos,
1023 return pcie_capability_clear_and_set_word(dev, pos, clear, 0);
1026 static inline int pcie_capability_clear_dword(struct pci_dev *dev, int pos,
1029 return pcie_capability_clear_and_set_dword(dev, pos, clear, 0);
1032 /* User-space driven config access */
1033 int pci_user_read_config_byte(struct pci_dev *dev, int where, u8 *val);
1034 int pci_user_read_config_word(struct pci_dev *dev, int where, u16 *val);
1035 int pci_user_read_config_dword(struct pci_dev *dev, int where, u32 *val);
1036 int pci_user_write_config_byte(struct pci_dev *dev, int where, u8 val);
1037 int pci_user_write_config_word(struct pci_dev *dev, int where, u16 val);
1038 int pci_user_write_config_dword(struct pci_dev *dev, int where, u32 val);
1040 int __must_check pci_enable_device(struct pci_dev *dev);
1041 int __must_check pci_enable_device_io(struct pci_dev *dev);
1042 int __must_check pci_enable_device_mem(struct pci_dev *dev);
1043 int __must_check pci_reenable_device(struct pci_dev *);
1044 int __must_check pcim_enable_device(struct pci_dev *pdev);
1045 void pcim_pin_device(struct pci_dev *pdev);
1047 static inline bool pci_intx_mask_supported(struct pci_dev *pdev)
1050 * INTx masking is supported if PCI_COMMAND_INTX_DISABLE is
1051 * writable and no quirk has marked the feature broken.
1053 return !pdev->broken_intx_masking;
1056 static inline int pci_is_enabled(struct pci_dev *pdev)
1058 return (atomic_read(&pdev->enable_cnt) > 0);
1061 static inline int pci_is_managed(struct pci_dev *pdev)
1063 return pdev->is_managed;
1066 void pci_disable_device(struct pci_dev *dev);
1068 extern unsigned int pcibios_max_latency;
1069 void pci_set_master(struct pci_dev *dev);
1070 void pci_clear_master(struct pci_dev *dev);
1072 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state);
1073 int pci_set_cacheline_size(struct pci_dev *dev);
1074 #define HAVE_PCI_SET_MWI
1075 int __must_check pci_set_mwi(struct pci_dev *dev);
1076 int __must_check pcim_set_mwi(struct pci_dev *dev);
1077 int pci_try_set_mwi(struct pci_dev *dev);
1078 void pci_clear_mwi(struct pci_dev *dev);
1079 void pci_intx(struct pci_dev *dev, int enable);
1080 bool pci_check_and_mask_intx(struct pci_dev *dev);
1081 bool pci_check_and_unmask_intx(struct pci_dev *dev);
1082 int pci_wait_for_pending(struct pci_dev *dev, int pos, u16 mask);
1083 int pci_wait_for_pending_transaction(struct pci_dev *dev);
1084 int pcix_get_max_mmrbc(struct pci_dev *dev);
1085 int pcix_get_mmrbc(struct pci_dev *dev);
1086 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
1087 int pcie_get_readrq(struct pci_dev *dev);
1088 int pcie_set_readrq(struct pci_dev *dev, int rq);
1089 int pcie_get_mps(struct pci_dev *dev);
1090 int pcie_set_mps(struct pci_dev *dev, int mps);
1091 u32 pcie_bandwidth_available(struct pci_dev *dev, struct pci_dev **limiting_dev,
1092 enum pci_bus_speed *speed,
1093 enum pcie_link_width *width);
1094 void pcie_print_link_status(struct pci_dev *dev);
1095 int pcie_flr(struct pci_dev *dev);
1096 int __pci_reset_function_locked(struct pci_dev *dev);
1097 int pci_reset_function(struct pci_dev *dev);
1098 int pci_reset_function_locked(struct pci_dev *dev);
1099 int pci_try_reset_function(struct pci_dev *dev);
1100 int pci_probe_reset_slot(struct pci_slot *slot);
1101 int pci_reset_slot(struct pci_slot *slot);
1102 int pci_try_reset_slot(struct pci_slot *slot);
1103 int pci_probe_reset_bus(struct pci_bus *bus);
1104 int pci_reset_bus(struct pci_bus *bus);
1105 int pci_try_reset_bus(struct pci_bus *bus);
1106 void pci_reset_secondary_bus(struct pci_dev *dev);
1107 void pcibios_reset_secondary_bus(struct pci_dev *dev);
1108 int pci_reset_bridge_secondary_bus(struct pci_dev *dev);
1109 void pci_update_resource(struct pci_dev *dev, int resno);
1110 int __must_check pci_assign_resource(struct pci_dev *dev, int i);
1111 int __must_check pci_reassign_resource(struct pci_dev *dev, int i, resource_size_t add_size, resource_size_t align);
1112 void pci_release_resource(struct pci_dev *dev, int resno);
1113 int __must_check pci_resize_resource(struct pci_dev *dev, int i, int size);
1114 int pci_select_bars(struct pci_dev *dev, unsigned long flags);
1115 bool pci_device_is_present(struct pci_dev *pdev);
1116 void pci_ignore_hotplug(struct pci_dev *dev);
1118 int __printf(6, 7) pci_request_irq(struct pci_dev *dev, unsigned int nr,
1119 irq_handler_t handler, irq_handler_t thread_fn, void *dev_id,
1120 const char *fmt, ...);
1121 void pci_free_irq(struct pci_dev *dev, unsigned int nr, void *dev_id);
1123 /* ROM control related routines */
1124 int pci_enable_rom(struct pci_dev *pdev);
1125 void pci_disable_rom(struct pci_dev *pdev);
1126 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size);
1127 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom);
1128 size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size);
1129 void __iomem __must_check *pci_platform_rom(struct pci_dev *pdev, size_t *size);
1131 /* Power management related routines */
1132 int pci_save_state(struct pci_dev *dev);
1133 void pci_restore_state(struct pci_dev *dev);
1134 struct pci_saved_state *pci_store_saved_state(struct pci_dev *dev);
1135 int pci_load_saved_state(struct pci_dev *dev,
1136 struct pci_saved_state *state);
1137 int pci_load_and_free_saved_state(struct pci_dev *dev,
1138 struct pci_saved_state **state);
1139 struct pci_cap_saved_state *pci_find_saved_cap(struct pci_dev *dev, char cap);
1140 struct pci_cap_saved_state *pci_find_saved_ext_cap(struct pci_dev *dev,
1142 int pci_add_cap_save_buffer(struct pci_dev *dev, char cap, unsigned int size);
1143 int pci_add_ext_cap_save_buffer(struct pci_dev *dev,
1144 u16 cap, unsigned int size);
1145 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state);
1146 int pci_set_power_state(struct pci_dev *dev, pci_power_t state);
1147 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state);
1148 bool pci_pme_capable(struct pci_dev *dev, pci_power_t state);
1149 void pci_pme_active(struct pci_dev *dev, bool enable);
1150 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable);
1151 int pci_wake_from_d3(struct pci_dev *dev, bool enable);
1152 int pci_prepare_to_sleep(struct pci_dev *dev);
1153 int pci_back_from_sleep(struct pci_dev *dev);
1154 bool pci_dev_run_wake(struct pci_dev *dev);
1155 bool pci_check_pme_status(struct pci_dev *dev);
1156 void pci_pme_wakeup_bus(struct pci_bus *bus);
1157 void pci_d3cold_enable(struct pci_dev *dev);
1158 void pci_d3cold_disable(struct pci_dev *dev);
1159 bool pcie_relaxed_ordering_enabled(struct pci_dev *dev);
1160 void pci_wakeup_bus(struct pci_bus *bus);
1161 void pci_bus_set_current_state(struct pci_bus *bus, pci_power_t state);
1163 /* PCI Virtual Channel */
1164 int pci_save_vc_state(struct pci_dev *dev);
1165 void pci_restore_vc_state(struct pci_dev *dev);
1166 void pci_allocate_vc_save_buffers(struct pci_dev *dev);
1168 /* For use by arch with custom probe code */
1169 void set_pcie_port_type(struct pci_dev *pdev);
1170 void set_pcie_hotplug_bridge(struct pci_dev *pdev);
1172 /* Functions for PCI Hotplug drivers to use */
1173 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap);
1174 unsigned int pci_rescan_bus_bridge_resize(struct pci_dev *bridge);
1175 unsigned int pci_rescan_bus(struct pci_bus *bus);
1176 void pci_lock_rescan_remove(void);
1177 void pci_unlock_rescan_remove(void);
1179 /* Vital Product Data routines */
1180 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf);
1181 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf);
1182 int pci_set_vpd_size(struct pci_dev *dev, size_t len);
1184 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */
1185 resource_size_t pcibios_retrieve_fw_addr(struct pci_dev *dev, int idx);
1186 void pci_bus_assign_resources(const struct pci_bus *bus);
1187 void pci_bus_claim_resources(struct pci_bus *bus);
1188 void pci_bus_size_bridges(struct pci_bus *bus);
1189 int pci_claim_resource(struct pci_dev *, int);
1190 int pci_claim_bridge_resource(struct pci_dev *bridge, int i);
1191 void pci_assign_unassigned_resources(void);
1192 void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
1193 void pci_assign_unassigned_bus_resources(struct pci_bus *bus);
1194 void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus);
1195 int pci_reassign_bridge_resources(struct pci_dev *bridge, unsigned long type);
1196 void pdev_enable_device(struct pci_dev *);
1197 int pci_enable_resources(struct pci_dev *, int mask);
1198 void pci_assign_irq(struct pci_dev *dev);
1199 struct resource *pci_find_resource(struct pci_dev *dev, struct resource *res);
1200 #define HAVE_PCI_REQ_REGIONS 2
1201 int __must_check pci_request_regions(struct pci_dev *, const char *);
1202 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *);
1203 void pci_release_regions(struct pci_dev *);
1204 int __must_check pci_request_region(struct pci_dev *, int, const char *);
1205 int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *);
1206 void pci_release_region(struct pci_dev *, int);
1207 int pci_request_selected_regions(struct pci_dev *, int, const char *);
1208 int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *);
1209 void pci_release_selected_regions(struct pci_dev *, int);
1211 /* drivers/pci/bus.c */
1212 struct pci_bus *pci_bus_get(struct pci_bus *bus);
1213 void pci_bus_put(struct pci_bus *bus);
1214 void pci_add_resource(struct list_head *resources, struct resource *res);
1215 void pci_add_resource_offset(struct list_head *resources, struct resource *res,
1216 resource_size_t offset);
1217 void pci_free_resource_list(struct list_head *resources);
1218 void pci_bus_add_resource(struct pci_bus *bus, struct resource *res,
1219 unsigned int flags);
1220 struct resource *pci_bus_resource_n(const struct pci_bus *bus, int n);
1221 void pci_bus_remove_resources(struct pci_bus *bus);
1222 int devm_request_pci_bus_resources(struct device *dev,
1223 struct list_head *resources);
1225 #define pci_bus_for_each_resource(bus, res, i) \
1227 (res = pci_bus_resource_n(bus, i)) || i < PCI_BRIDGE_RESOURCE_NUM; \
1230 int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
1231 struct resource *res, resource_size_t size,
1232 resource_size_t align, resource_size_t min,
1233 unsigned long type_mask,
1234 resource_size_t (*alignf)(void *,
1235 const struct resource *,
1241 int pci_register_io_range(struct fwnode_handle *fwnode, phys_addr_t addr,
1242 resource_size_t size);
1243 unsigned long pci_address_to_pio(phys_addr_t addr);
1244 phys_addr_t pci_pio_to_address(unsigned long pio);
1245 int pci_remap_iospace(const struct resource *res, phys_addr_t phys_addr);
1246 void pci_unmap_iospace(struct resource *res);
1247 void __iomem *devm_pci_remap_cfgspace(struct device *dev,
1248 resource_size_t offset,
1249 resource_size_t size);
1250 void __iomem *devm_pci_remap_cfg_resource(struct device *dev,
1251 struct resource *res);
1253 static inline pci_bus_addr_t pci_bus_address(struct pci_dev *pdev, int bar)
1255 struct pci_bus_region region;
1257 pcibios_resource_to_bus(pdev->bus, ®ion, &pdev->resource[bar]);
1258 return region.start;
1261 /* Proper probing supporting hot-pluggable devices */
1262 int __must_check __pci_register_driver(struct pci_driver *, struct module *,
1263 const char *mod_name);
1265 /* pci_register_driver() must be a macro so KBUILD_MODNAME can be expanded */
1266 #define pci_register_driver(driver) \
1267 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
1269 void pci_unregister_driver(struct pci_driver *dev);
1272 * module_pci_driver() - Helper macro for registering a PCI driver
1273 * @__pci_driver: pci_driver struct
1275 * Helper macro for PCI drivers which do not do anything special in module
1276 * init/exit. This eliminates a lot of boilerplate. Each module may only
1277 * use this macro once, and calling it replaces module_init() and module_exit()
1279 #define module_pci_driver(__pci_driver) \
1280 module_driver(__pci_driver, pci_register_driver, pci_unregister_driver)
1283 * builtin_pci_driver() - Helper macro for registering a PCI driver
1284 * @__pci_driver: pci_driver struct
1286 * Helper macro for PCI drivers which do not do anything special in their
1287 * init code. This eliminates a lot of boilerplate. Each driver may only
1288 * use this macro once, and calling it replaces device_initcall(...)
1290 #define builtin_pci_driver(__pci_driver) \
1291 builtin_driver(__pci_driver, pci_register_driver)
1293 struct pci_driver *pci_dev_driver(const struct pci_dev *dev);
1294 int pci_add_dynid(struct pci_driver *drv,
1295 unsigned int vendor, unsigned int device,
1296 unsigned int subvendor, unsigned int subdevice,
1297 unsigned int class, unsigned int class_mask,
1298 unsigned long driver_data);
1299 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids,
1300 struct pci_dev *dev);
1301 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max,
1304 void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *),
1306 int pci_cfg_space_size(struct pci_dev *dev);
1307 unsigned char pci_bus_max_busnr(struct pci_bus *bus);
1308 void pci_setup_bridge(struct pci_bus *bus);
1309 resource_size_t pcibios_window_alignment(struct pci_bus *bus,
1310 unsigned long type);
1312 #define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0)
1313 #define PCI_VGA_STATE_CHANGE_DECODES (1 << 1)
1315 int pci_set_vga_state(struct pci_dev *pdev, bool decode,
1316 unsigned int command_bits, u32 flags);
1318 #define PCI_IRQ_LEGACY (1 << 0) /* Allow legacy interrupts */
1319 #define PCI_IRQ_MSI (1 << 1) /* Allow MSI interrupts */
1320 #define PCI_IRQ_MSIX (1 << 2) /* Allow MSI-X interrupts */
1321 #define PCI_IRQ_AFFINITY (1 << 3) /* Auto-assign affinity */
1322 #define PCI_IRQ_ALL_TYPES \
1323 (PCI_IRQ_LEGACY | PCI_IRQ_MSI | PCI_IRQ_MSIX)
1325 /* kmem_cache style wrapper around pci_alloc_consistent() */
1327 #include <linux/pci-dma.h>
1328 #include <linux/dmapool.h>
1330 #define pci_pool dma_pool
1331 #define pci_pool_create(name, pdev, size, align, allocation) \
1332 dma_pool_create(name, &pdev->dev, size, align, allocation)
1333 #define pci_pool_destroy(pool) dma_pool_destroy(pool)
1334 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
1335 #define pci_pool_zalloc(pool, flags, handle) \
1336 dma_pool_zalloc(pool, flags, handle)
1337 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
1340 u32 vector; /* Kernel uses to write allocated vector */
1341 u16 entry; /* Driver uses to specify entry, OS writes */
1344 #ifdef CONFIG_PCI_MSI
1345 int pci_msi_vec_count(struct pci_dev *dev);
1346 void pci_disable_msi(struct pci_dev *dev);
1347 int pci_msix_vec_count(struct pci_dev *dev);
1348 void pci_disable_msix(struct pci_dev *dev);
1349 void pci_restore_msi_state(struct pci_dev *dev);
1350 int pci_msi_enabled(void);
1351 int pci_enable_msi(struct pci_dev *dev);
1352 int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
1353 int minvec, int maxvec);
1354 static inline int pci_enable_msix_exact(struct pci_dev *dev,
1355 struct msix_entry *entries, int nvec)
1357 int rc = pci_enable_msix_range(dev, entries, nvec, nvec);
1362 int pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
1363 unsigned int max_vecs, unsigned int flags,
1364 const struct irq_affinity *affd);
1366 void pci_free_irq_vectors(struct pci_dev *dev);
1367 int pci_irq_vector(struct pci_dev *dev, unsigned int nr);
1368 const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev, int vec);
1369 int pci_irq_get_node(struct pci_dev *pdev, int vec);
1372 static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
1373 static inline void pci_disable_msi(struct pci_dev *dev) { }
1374 static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; }
1375 static inline void pci_disable_msix(struct pci_dev *dev) { }
1376 static inline void pci_restore_msi_state(struct pci_dev *dev) { }
1377 static inline int pci_msi_enabled(void) { return 0; }
1378 static inline int pci_enable_msi(struct pci_dev *dev)
1380 static inline int pci_enable_msix_range(struct pci_dev *dev,
1381 struct msix_entry *entries, int minvec, int maxvec)
1383 static inline int pci_enable_msix_exact(struct pci_dev *dev,
1384 struct msix_entry *entries, int nvec)
1388 pci_alloc_irq_vectors_affinity(struct pci_dev *dev, unsigned int min_vecs,
1389 unsigned int max_vecs, unsigned int flags,
1390 const struct irq_affinity *aff_desc)
1392 if ((flags & PCI_IRQ_LEGACY) && min_vecs == 1 && dev->irq)
1397 static inline void pci_free_irq_vectors(struct pci_dev *dev)
1401 static inline int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
1403 if (WARN_ON_ONCE(nr > 0))
1407 static inline const struct cpumask *pci_irq_get_affinity(struct pci_dev *pdev,
1410 return cpu_possible_mask;
1413 static inline int pci_irq_get_node(struct pci_dev *pdev, int vec)
1415 return first_online_node;
1420 pci_alloc_irq_vectors(struct pci_dev *dev, unsigned int min_vecs,
1421 unsigned int max_vecs, unsigned int flags)
1423 return pci_alloc_irq_vectors_affinity(dev, min_vecs, max_vecs, flags,
1428 * pci_irqd_intx_xlate() - Translate PCI INTx value to an IRQ domain hwirq
1429 * @d: the INTx IRQ domain
1430 * @node: the DT node for the device whose interrupt we're translating
1431 * @intspec: the interrupt specifier data from the DT
1432 * @intsize: the number of entries in @intspec
1433 * @out_hwirq: pointer at which to write the hwirq number
1434 * @out_type: pointer at which to write the interrupt type
1436 * Translate a PCI INTx interrupt number from device tree in the range 1-4, as
1437 * stored in the standard PCI_INTERRUPT_PIN register, to a value in the range
1438 * 0-3 suitable for use in a 4 entry IRQ domain. That is, subtract one from the
1439 * INTx value to obtain the hwirq number.
1441 * Returns 0 on success, or -EINVAL if the interrupt specifier is out of range.
1443 static inline int pci_irqd_intx_xlate(struct irq_domain *d,
1444 struct device_node *node,
1446 unsigned int intsize,
1447 unsigned long *out_hwirq,
1448 unsigned int *out_type)
1450 const u32 intx = intspec[0];
1452 if (intx < PCI_INTERRUPT_INTA || intx > PCI_INTERRUPT_INTD)
1455 *out_hwirq = intx - PCI_INTERRUPT_INTA;
1459 #ifdef CONFIG_PCIEPORTBUS
1460 extern bool pcie_ports_disabled;
1461 extern bool pcie_ports_native;
1463 #define pcie_ports_disabled true
1464 #define pcie_ports_native false
1467 #ifdef CONFIG_PCIEASPM
1468 bool pcie_aspm_support_enabled(void);
1470 static inline bool pcie_aspm_support_enabled(void) { return false; }
1473 #ifdef CONFIG_PCIEAER
1474 void pci_no_aer(void);
1475 bool pci_aer_available(void);
1476 int pci_aer_init(struct pci_dev *dev);
1478 static inline void pci_no_aer(void) { }
1479 static inline bool pci_aer_available(void) { return false; }
1480 static inline int pci_aer_init(struct pci_dev *d) { return -ENODEV; }
1483 #ifdef CONFIG_PCIE_ECRC
1484 void pcie_set_ecrc_checking(struct pci_dev *dev);
1485 void pcie_ecrc_get_policy(char *str);
1487 static inline void pcie_set_ecrc_checking(struct pci_dev *dev) { }
1488 static inline void pcie_ecrc_get_policy(char *str) { }
1491 bool pci_ats_disabled(void);
1493 #ifdef CONFIG_PCI_ATS
1494 /* Address Translation Service */
1495 void pci_ats_init(struct pci_dev *dev);
1496 int pci_enable_ats(struct pci_dev *dev, int ps);
1497 void pci_disable_ats(struct pci_dev *dev);
1498 int pci_ats_queue_depth(struct pci_dev *dev);
1500 static inline void pci_ats_init(struct pci_dev *d) { }
1501 static inline int pci_enable_ats(struct pci_dev *d, int ps) { return -ENODEV; }
1502 static inline void pci_disable_ats(struct pci_dev *d) { }
1503 static inline int pci_ats_queue_depth(struct pci_dev *d) { return -ENODEV; }
1506 #ifdef CONFIG_PCIE_PTM
1507 int pci_enable_ptm(struct pci_dev *dev, u8 *granularity);
1509 static inline int pci_enable_ptm(struct pci_dev *dev, u8 *granularity)
1513 void pci_cfg_access_lock(struct pci_dev *dev);
1514 bool pci_cfg_access_trylock(struct pci_dev *dev);
1515 void pci_cfg_access_unlock(struct pci_dev *dev);
1518 * PCI domain support. Sometimes called PCI segment (eg by ACPI),
1519 * a PCI domain is defined to be a set of PCI buses which share
1520 * configuration space.
1522 #ifdef CONFIG_PCI_DOMAINS
1523 extern int pci_domains_supported;
1525 enum { pci_domains_supported = 0 };
1526 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
1527 static inline int pci_proc_domain(struct pci_bus *bus) { return 0; }
1528 #endif /* CONFIG_PCI_DOMAINS */
1531 * Generic implementation for PCI domain support. If your
1532 * architecture does not need custom management of PCI
1533 * domains then this implementation will be used
1535 #ifdef CONFIG_PCI_DOMAINS_GENERIC
1536 static inline int pci_domain_nr(struct pci_bus *bus)
1538 return bus->domain_nr;
1541 int acpi_pci_bus_find_domain_nr(struct pci_bus *bus);
1543 static inline int acpi_pci_bus_find_domain_nr(struct pci_bus *bus)
1546 int pci_bus_find_domain_nr(struct pci_bus *bus, struct device *parent);
1549 /* Some architectures require additional setup to direct VGA traffic */
1550 typedef int (*arch_set_vga_state_t)(struct pci_dev *pdev, bool decode,
1551 unsigned int command_bits, u32 flags);
1552 void pci_register_set_vga_state(arch_set_vga_state_t func);
1555 pci_request_io_regions(struct pci_dev *pdev, const char *name)
1557 return pci_request_selected_regions(pdev,
1558 pci_select_bars(pdev, IORESOURCE_IO), name);
1562 pci_release_io_regions(struct pci_dev *pdev)
1564 return pci_release_selected_regions(pdev,
1565 pci_select_bars(pdev, IORESOURCE_IO));
1569 pci_request_mem_regions(struct pci_dev *pdev, const char *name)
1571 return pci_request_selected_regions(pdev,
1572 pci_select_bars(pdev, IORESOURCE_MEM), name);
1576 pci_release_mem_regions(struct pci_dev *pdev)
1578 return pci_release_selected_regions(pdev,
1579 pci_select_bars(pdev, IORESOURCE_MEM));
1582 #else /* CONFIG_PCI is not enabled */
1584 static inline void pci_set_flags(int flags) { }
1585 static inline void pci_add_flags(int flags) { }
1586 static inline void pci_clear_flags(int flags) { }
1587 static inline int pci_has_flag(int flag) { return 0; }
1590 * If the system does not have PCI, clearly these return errors. Define
1591 * these as simple inline functions to avoid hair in drivers.
1593 #define _PCI_NOP(o, s, t) \
1594 static inline int pci_##o##_config_##s(struct pci_dev *dev, \
1596 { return PCIBIOS_FUNC_NOT_SUPPORTED; }
1598 #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \
1599 _PCI_NOP(o, word, u16 x) \
1600 _PCI_NOP(o, dword, u32 x)
1601 _PCI_NOP_ALL(read, *)
1602 _PCI_NOP_ALL(write,)
1604 static inline struct pci_dev *pci_get_device(unsigned int vendor,
1605 unsigned int device,
1606 struct pci_dev *from)
1609 static inline struct pci_dev *pci_get_subsys(unsigned int vendor,
1610 unsigned int device,
1611 unsigned int ss_vendor,
1612 unsigned int ss_device,
1613 struct pci_dev *from)
1616 static inline struct pci_dev *pci_get_class(unsigned int class,
1617 struct pci_dev *from)
1620 #define pci_dev_present(ids) (0)
1621 #define no_pci_devices() (1)
1622 #define pci_dev_put(dev) do { } while (0)
1624 static inline void pci_set_master(struct pci_dev *dev) { }
1625 static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; }
1626 static inline void pci_disable_device(struct pci_dev *dev) { }
1627 static inline int pci_assign_resource(struct pci_dev *dev, int i)
1629 static inline int __pci_register_driver(struct pci_driver *drv,
1630 struct module *owner)
1632 static inline int pci_register_driver(struct pci_driver *drv)
1634 static inline void pci_unregister_driver(struct pci_driver *drv) { }
1635 static inline int pci_find_capability(struct pci_dev *dev, int cap)
1637 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post,
1640 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap)
1643 /* Power management related routines */
1644 static inline int pci_save_state(struct pci_dev *dev) { return 0; }
1645 static inline void pci_restore_state(struct pci_dev *dev) { }
1646 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
1648 static inline int pci_wake_from_d3(struct pci_dev *dev, bool enable)
1650 static inline pci_power_t pci_choose_state(struct pci_dev *dev,
1653 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state,
1657 static inline struct resource *pci_find_resource(struct pci_dev *dev,
1658 struct resource *res)
1660 static inline int pci_request_regions(struct pci_dev *dev, const char *res_name)
1662 static inline void pci_release_regions(struct pci_dev *dev) { }
1664 static inline unsigned long pci_address_to_pio(phys_addr_t addr) { return -1; }
1666 static inline void pci_block_cfg_access(struct pci_dev *dev) { }
1667 static inline int pci_block_cfg_access_in_atomic(struct pci_dev *dev)
1669 static inline void pci_unblock_cfg_access(struct pci_dev *dev) { }
1671 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from)
1673 static inline struct pci_dev *pci_get_slot(struct pci_bus *bus,
1676 static inline struct pci_dev *pci_get_domain_bus_and_slot(int domain,
1677 unsigned int bus, unsigned int devfn)
1680 static inline int pci_domain_nr(struct pci_bus *bus) { return 0; }
1681 static inline struct pci_dev *pci_dev_get(struct pci_dev *dev) { return NULL; }
1683 #define dev_is_pci(d) (false)
1684 #define dev_is_pf(d) (false)
1685 static inline bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags)
1687 static inline int pci_irqd_intx_xlate(struct irq_domain *d,
1688 struct device_node *node,
1690 unsigned int intsize,
1691 unsigned long *out_hwirq,
1692 unsigned int *out_type)
1694 #endif /* CONFIG_PCI */
1696 /* Include architecture-dependent settings and functions */
1698 #include <asm/pci.h>
1700 /* These two functions provide almost identical functionality. Depennding
1701 * on the architecture, one will be implemented as a wrapper around the
1702 * other (in drivers/pci/mmap.c).
1704 * pci_mmap_resource_range() maps a specific BAR, and vm->vm_pgoff
1705 * is expected to be an offset within that region.
1707 * pci_mmap_page_range() is the legacy architecture-specific interface,
1708 * which accepts a "user visible" resource address converted by
1709 * pci_resource_to_user(), as used in the legacy mmap() interface in
1712 int pci_mmap_resource_range(struct pci_dev *dev, int bar,
1713 struct vm_area_struct *vma,
1714 enum pci_mmap_state mmap_state, int write_combine);
1715 int pci_mmap_page_range(struct pci_dev *pdev, int bar,
1716 struct vm_area_struct *vma,
1717 enum pci_mmap_state mmap_state, int write_combine);
1719 #ifndef arch_can_pci_mmap_wc
1720 #define arch_can_pci_mmap_wc() 0
1723 #ifndef arch_can_pci_mmap_io
1724 #define arch_can_pci_mmap_io() 0
1725 #define pci_iobar_pfn(pdev, bar, vma) (-EINVAL)
1727 int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma);
1730 #ifndef pci_root_bus_fwnode
1731 #define pci_root_bus_fwnode(bus) NULL
1735 * These helpers provide future and backwards compatibility
1736 * for accessing popular PCI BAR info
1738 #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start)
1739 #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end)
1740 #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags)
1741 #define pci_resource_len(dev,bar) \
1742 ((pci_resource_start((dev), (bar)) == 0 && \
1743 pci_resource_end((dev), (bar)) == \
1744 pci_resource_start((dev), (bar))) ? 0 : \
1746 (pci_resource_end((dev), (bar)) - \
1747 pci_resource_start((dev), (bar)) + 1))
1750 * Similar to the helpers above, these manipulate per-pci_dev
1751 * driver-specific data. They are really just a wrapper around
1752 * the generic device structure functions of these calls.
1754 static inline void *pci_get_drvdata(struct pci_dev *pdev)
1756 return dev_get_drvdata(&pdev->dev);
1759 static inline void pci_set_drvdata(struct pci_dev *pdev, void *data)
1761 dev_set_drvdata(&pdev->dev, data);
1764 static inline const char *pci_name(const struct pci_dev *pdev)
1766 return dev_name(&pdev->dev);
1771 * Some archs don't want to expose struct resource to userland as-is
1772 * in sysfs and /proc
1774 #ifdef HAVE_ARCH_PCI_RESOURCE_TO_USER
1775 void pci_resource_to_user(const struct pci_dev *dev, int bar,
1776 const struct resource *rsrc,
1777 resource_size_t *start, resource_size_t *end);
1779 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
1780 const struct resource *rsrc, resource_size_t *start,
1781 resource_size_t *end)
1783 *start = rsrc->start;
1786 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
1790 * The world is not perfect and supplies us with broken PCI devices.
1791 * For at least a part of these bugs we need a work-around, so both
1792 * generic (drivers/pci/quirks.c) and per-architecture code can define
1793 * fixup hooks to be called for particular buggy devices.
1797 u16 vendor; /* Or PCI_ANY_ID */
1798 u16 device; /* Or PCI_ANY_ID */
1799 u32 class; /* Or PCI_ANY_ID */
1800 unsigned int class_shift; /* should be 0, 8, 16 */
1801 void (*hook)(struct pci_dev *dev);
1804 enum pci_fixup_pass {
1805 pci_fixup_early, /* Before probing BARs */
1806 pci_fixup_header, /* After reading configuration header */
1807 pci_fixup_final, /* Final phase of device fixups */
1808 pci_fixup_enable, /* pci_enable_device() time */
1809 pci_fixup_resume, /* pci_device_resume() */
1810 pci_fixup_suspend, /* pci_device_suspend() */
1811 pci_fixup_resume_early, /* pci_device_resume_early() */
1812 pci_fixup_suspend_late, /* pci_device_suspend_late() */
1815 /* Anonymous variables would be nice... */
1816 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, class, \
1817 class_shift, hook) \
1818 static const struct pci_fixup __PASTE(__pci_fixup_##name,__LINE__) __used \
1819 __attribute__((__section__(#section), aligned((sizeof(void *))))) \
1820 = { vendor, device, class, class_shift, hook };
1822 #define DECLARE_PCI_FIXUP_CLASS_EARLY(vendor, device, class, \
1823 class_shift, hook) \
1824 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1825 hook, vendor, device, class, class_shift, hook)
1826 #define DECLARE_PCI_FIXUP_CLASS_HEADER(vendor, device, class, \
1827 class_shift, hook) \
1828 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1829 hook, vendor, device, class, class_shift, hook)
1830 #define DECLARE_PCI_FIXUP_CLASS_FINAL(vendor, device, class, \
1831 class_shift, hook) \
1832 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1833 hook, vendor, device, class, class_shift, hook)
1834 #define DECLARE_PCI_FIXUP_CLASS_ENABLE(vendor, device, class, \
1835 class_shift, hook) \
1836 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1837 hook, vendor, device, class, class_shift, hook)
1838 #define DECLARE_PCI_FIXUP_CLASS_RESUME(vendor, device, class, \
1839 class_shift, hook) \
1840 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1841 resume##hook, vendor, device, class, class_shift, hook)
1842 #define DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(vendor, device, class, \
1843 class_shift, hook) \
1844 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1845 resume_early##hook, vendor, device, class, class_shift, hook)
1846 #define DECLARE_PCI_FIXUP_CLASS_SUSPEND(vendor, device, class, \
1847 class_shift, hook) \
1848 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1849 suspend##hook, vendor, device, class, class_shift, hook)
1850 #define DECLARE_PCI_FIXUP_CLASS_SUSPEND_LATE(vendor, device, class, \
1851 class_shift, hook) \
1852 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \
1853 suspend_late##hook, vendor, device, class, class_shift, hook)
1855 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \
1856 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \
1857 hook, vendor, device, PCI_ANY_ID, 0, hook)
1858 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \
1859 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \
1860 hook, vendor, device, PCI_ANY_ID, 0, hook)
1861 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \
1862 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \
1863 hook, vendor, device, PCI_ANY_ID, 0, hook)
1864 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \
1865 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \
1866 hook, vendor, device, PCI_ANY_ID, 0, hook)
1867 #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \
1868 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \
1869 resume##hook, vendor, device, PCI_ANY_ID, 0, hook)
1870 #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \
1871 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \
1872 resume_early##hook, vendor, device, PCI_ANY_ID, 0, hook)
1873 #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \
1874 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \
1875 suspend##hook, vendor, device, PCI_ANY_ID, 0, hook)
1876 #define DECLARE_PCI_FIXUP_SUSPEND_LATE(vendor, device, hook) \
1877 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend_late, \
1878 suspend_late##hook, vendor, device, PCI_ANY_ID, 0, hook)
1880 #ifdef CONFIG_PCI_QUIRKS
1881 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);
1882 int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags);
1883 int pci_dev_specific_enable_acs(struct pci_dev *dev);
1885 static inline void pci_fixup_device(enum pci_fixup_pass pass,
1886 struct pci_dev *dev) { }
1887 static inline int pci_dev_specific_acs_enabled(struct pci_dev *dev,
1892 static inline int pci_dev_specific_enable_acs(struct pci_dev *dev)
1898 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen);
1899 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr);
1900 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev);
1901 int pcim_iomap_regions(struct pci_dev *pdev, int mask, const char *name);
1902 int pcim_iomap_regions_request_all(struct pci_dev *pdev, int mask,
1904 void pcim_iounmap_regions(struct pci_dev *pdev, int mask);
1906 extern int pci_pci_problems;
1907 #define PCIPCI_FAIL 1 /* No PCI PCI DMA */
1908 #define PCIPCI_TRITON 2
1909 #define PCIPCI_NATOMA 4
1910 #define PCIPCI_VIAETBF 8
1911 #define PCIPCI_VSFX 16
1912 #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */
1913 #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */
1915 extern unsigned long pci_cardbus_io_size;
1916 extern unsigned long pci_cardbus_mem_size;
1917 extern u8 pci_dfl_cache_line_size;
1918 extern u8 pci_cache_line_size;
1920 extern unsigned long pci_hotplug_io_size;
1921 extern unsigned long pci_hotplug_mem_size;
1922 extern unsigned long pci_hotplug_bus_size;
1924 /* Architecture-specific versions may override these (weak) */
1925 void pcibios_disable_device(struct pci_dev *dev);
1926 void pcibios_set_master(struct pci_dev *dev);
1927 int pcibios_set_pcie_reset_state(struct pci_dev *dev,
1928 enum pcie_reset_state state);
1929 int pcibios_add_device(struct pci_dev *dev);
1930 void pcibios_release_device(struct pci_dev *dev);
1931 void pcibios_penalize_isa_irq(int irq, int active);
1932 int pcibios_alloc_irq(struct pci_dev *dev);
1933 void pcibios_free_irq(struct pci_dev *dev);
1934 resource_size_t pcibios_default_alignment(void);
1936 #ifdef CONFIG_HIBERNATE_CALLBACKS
1937 extern struct dev_pm_ops pcibios_pm_ops;
1940 #if defined(CONFIG_PCI_MMCONFIG) || defined(CONFIG_ACPI_MCFG)
1941 void __init pci_mmcfg_early_init(void);
1942 void __init pci_mmcfg_late_init(void);
1944 static inline void pci_mmcfg_early_init(void) { }
1945 static inline void pci_mmcfg_late_init(void) { }
1948 int pci_ext_cfg_avail(void);
1950 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar);
1951 void __iomem *pci_ioremap_wc_bar(struct pci_dev *pdev, int bar);
1953 #ifdef CONFIG_PCI_IOV
1954 int pci_iov_virtfn_bus(struct pci_dev *dev, int id);
1955 int pci_iov_virtfn_devfn(struct pci_dev *dev, int id);
1957 int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn);
1958 void pci_disable_sriov(struct pci_dev *dev);
1959 int pci_iov_add_virtfn(struct pci_dev *dev, int id);
1960 void pci_iov_remove_virtfn(struct pci_dev *dev, int id);
1961 int pci_num_vf(struct pci_dev *dev);
1962 int pci_vfs_assigned(struct pci_dev *dev);
1963 int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs);
1964 int pci_sriov_get_totalvfs(struct pci_dev *dev);
1965 int pci_sriov_configure_simple(struct pci_dev *dev, int nr_virtfn);
1966 resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno);
1967 void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe);
1969 /* Arch may override these (weak) */
1970 int pcibios_sriov_enable(struct pci_dev *pdev, u16 num_vfs);
1971 int pcibios_sriov_disable(struct pci_dev *pdev);
1972 resource_size_t pcibios_iov_resource_alignment(struct pci_dev *dev, int resno);
1974 static inline int pci_iov_virtfn_bus(struct pci_dev *dev, int id)
1978 static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id)
1982 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn)
1984 static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id)
1988 static inline void pci_iov_remove_virtfn(struct pci_dev *dev,
1990 static inline void pci_disable_sriov(struct pci_dev *dev) { }
1991 static inline int pci_num_vf(struct pci_dev *dev) { return 0; }
1992 static inline int pci_vfs_assigned(struct pci_dev *dev)
1994 static inline int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs)
1996 static inline int pci_sriov_get_totalvfs(struct pci_dev *dev)
1998 #define pci_sriov_configure_simple NULL
1999 static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno)
2001 static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { }
2004 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE)
2005 void pci_hp_create_module_link(struct pci_slot *pci_slot);
2006 void pci_hp_remove_module_link(struct pci_slot *pci_slot);
2010 * pci_pcie_cap - get the saved PCIe capability offset
2013 * PCIe capability offset is calculated at PCI device initialization
2014 * time and saved in the data structure. This function returns saved
2015 * PCIe capability offset. Using this instead of pci_find_capability()
2016 * reduces unnecessary search in the PCI configuration space. If you
2017 * need to calculate PCIe capability offset from raw device for some
2018 * reasons, please use pci_find_capability() instead.
2020 static inline int pci_pcie_cap(struct pci_dev *dev)
2022 return dev->pcie_cap;
2026 * pci_is_pcie - check if the PCI device is PCI Express capable
2029 * Returns: true if the PCI device is PCI Express capable, false otherwise.
2031 static inline bool pci_is_pcie(struct pci_dev *dev)
2033 return pci_pcie_cap(dev);
2037 * pcie_caps_reg - get the PCIe Capabilities Register
2040 static inline u16 pcie_caps_reg(const struct pci_dev *dev)
2042 return dev->pcie_flags_reg;
2046 * pci_pcie_type - get the PCIe device/port type
2049 static inline int pci_pcie_type(const struct pci_dev *dev)
2051 return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4;
2054 static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev)
2057 if (!pci_is_pcie(dev))
2059 if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
2061 if (!dev->bus->self)
2063 dev = dev->bus->self;
2068 void pci_request_acs(void);
2069 bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags);
2070 bool pci_acs_path_enabled(struct pci_dev *start,
2071 struct pci_dev *end, u16 acs_flags);
2072 int pci_enable_atomic_ops_to_root(struct pci_dev *dev, u32 cap_mask);
2074 #define PCI_VPD_LRDT 0x80 /* Large Resource Data Type */
2075 #define PCI_VPD_LRDT_ID(x) ((x) | PCI_VPD_LRDT)
2077 /* Large Resource Data Type Tag Item Names */
2078 #define PCI_VPD_LTIN_ID_STRING 0x02 /* Identifier String */
2079 #define PCI_VPD_LTIN_RO_DATA 0x10 /* Read-Only Data */
2080 #define PCI_VPD_LTIN_RW_DATA 0x11 /* Read-Write Data */
2082 #define PCI_VPD_LRDT_ID_STRING PCI_VPD_LRDT_ID(PCI_VPD_LTIN_ID_STRING)
2083 #define PCI_VPD_LRDT_RO_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RO_DATA)
2084 #define PCI_VPD_LRDT_RW_DATA PCI_VPD_LRDT_ID(PCI_VPD_LTIN_RW_DATA)
2086 /* Small Resource Data Type Tag Item Names */
2087 #define PCI_VPD_STIN_END 0x0f /* End */
2089 #define PCI_VPD_SRDT_END (PCI_VPD_STIN_END << 3)
2091 #define PCI_VPD_SRDT_TIN_MASK 0x78
2092 #define PCI_VPD_SRDT_LEN_MASK 0x07
2093 #define PCI_VPD_LRDT_TIN_MASK 0x7f
2095 #define PCI_VPD_LRDT_TAG_SIZE 3
2096 #define PCI_VPD_SRDT_TAG_SIZE 1
2098 #define PCI_VPD_INFO_FLD_HDR_SIZE 3
2100 #define PCI_VPD_RO_KEYWORD_PARTNO "PN"
2101 #define PCI_VPD_RO_KEYWORD_MFR_ID "MN"
2102 #define PCI_VPD_RO_KEYWORD_VENDOR0 "V0"
2103 #define PCI_VPD_RO_KEYWORD_CHKSUM "RV"
2106 * pci_vpd_lrdt_size - Extracts the Large Resource Data Type length
2107 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
2109 * Returns the extracted Large Resource Data Type length.
2111 static inline u16 pci_vpd_lrdt_size(const u8 *lrdt)
2113 return (u16)lrdt[1] + ((u16)lrdt[2] << 8);
2117 * pci_vpd_lrdt_tag - Extracts the Large Resource Data Type Tag Item
2118 * @lrdt: Pointer to the beginning of the Large Resource Data Type tag
2120 * Returns the extracted Large Resource Data Type Tag item.
2122 static inline u16 pci_vpd_lrdt_tag(const u8 *lrdt)
2124 return (u16)(lrdt[0] & PCI_VPD_LRDT_TIN_MASK);
2128 * pci_vpd_srdt_size - Extracts the Small Resource Data Type length
2129 * @srdt: Pointer to the beginning of the Small Resource Data Type tag
2131 * Returns the extracted Small Resource Data Type length.
2133 static inline u8 pci_vpd_srdt_size(const u8 *srdt)
2135 return (*srdt) & PCI_VPD_SRDT_LEN_MASK;
2139 * pci_vpd_srdt_tag - Extracts the Small Resource Data Type Tag Item
2140 * @srdt: Pointer to the beginning of the Small Resource Data Type tag
2142 * Returns the extracted Small Resource Data Type Tag Item.
2144 static inline u8 pci_vpd_srdt_tag(const u8 *srdt)
2146 return ((*srdt) & PCI_VPD_SRDT_TIN_MASK) >> 3;
2150 * pci_vpd_info_field_size - Extracts the information field length
2151 * @lrdt: Pointer to the beginning of an information field header
2153 * Returns the extracted information field length.
2155 static inline u8 pci_vpd_info_field_size(const u8 *info_field)
2157 return info_field[2];
2161 * pci_vpd_find_tag - Locates the Resource Data Type tag provided
2162 * @buf: Pointer to buffered vpd data
2163 * @off: The offset into the buffer at which to begin the search
2164 * @len: The length of the vpd buffer
2165 * @rdt: The Resource Data Type to search for
2167 * Returns the index where the Resource Data Type was found or
2168 * -ENOENT otherwise.
2170 int pci_vpd_find_tag(const u8 *buf, unsigned int off, unsigned int len, u8 rdt);
2173 * pci_vpd_find_info_keyword - Locates an information field keyword in the VPD
2174 * @buf: Pointer to buffered vpd data
2175 * @off: The offset into the buffer at which to begin the search
2176 * @len: The length of the buffer area, relative to off, in which to search
2177 * @kw: The keyword to search for
2179 * Returns the index where the information field keyword was found or
2180 * -ENOENT otherwise.
2182 int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off,
2183 unsigned int len, const char *kw);
2185 /* PCI <-> OF binding helpers */
2189 void pci_set_of_node(struct pci_dev *dev);
2190 void pci_release_of_node(struct pci_dev *dev);
2191 void pci_set_bus_of_node(struct pci_bus *bus);
2192 void pci_release_bus_of_node(struct pci_bus *bus);
2193 struct irq_domain *pci_host_bridge_of_msi_domain(struct pci_bus *bus);
2194 int pci_parse_request_of_pci_ranges(struct device *dev,
2195 struct list_head *resources,
2196 struct resource **bus_range);
2198 /* Arch may override this (weak) */
2199 struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus);
2201 #else /* CONFIG_OF */
2202 static inline void pci_set_of_node(struct pci_dev *dev) { }
2203 static inline void pci_release_of_node(struct pci_dev *dev) { }
2204 static inline void pci_set_bus_of_node(struct pci_bus *bus) { }
2205 static inline void pci_release_bus_of_node(struct pci_bus *bus) { }
2206 static inline struct irq_domain *
2207 pci_host_bridge_of_msi_domain(struct pci_bus *bus) { return NULL; }
2208 static inline int pci_parse_request_of_pci_ranges(struct device *dev,
2209 struct list_head *resources,
2210 struct resource **bus_range)
2214 #endif /* CONFIG_OF */
2216 static inline struct device_node *
2217 pci_device_to_OF_node(const struct pci_dev *pdev)
2219 return pdev ? pdev->dev.of_node : NULL;
2222 static inline struct device_node *pci_bus_to_OF_node(struct pci_bus *bus)
2224 return bus ? bus->dev.of_node : NULL;
2228 struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus);
2231 pci_msi_register_fwnode_provider(struct fwnode_handle *(*fn)(struct device *));
2233 static inline struct irq_domain *
2234 pci_host_bridge_acpi_msi_domain(struct pci_bus *bus) { return NULL; }
2238 static inline struct eeh_dev *pci_dev_to_eeh_dev(struct pci_dev *pdev)
2240 return pdev->dev.archdata.edev;
2244 void pci_add_dma_alias(struct pci_dev *dev, u8 devfn);
2245 bool pci_devs_are_dma_aliases(struct pci_dev *dev1, struct pci_dev *dev2);
2246 int pci_for_each_dma_alias(struct pci_dev *pdev,
2247 int (*fn)(struct pci_dev *pdev,
2248 u16 alias, void *data), void *data);
2250 /* Helper functions for operation of device flag */
2251 static inline void pci_set_dev_assigned(struct pci_dev *pdev)
2253 pdev->dev_flags |= PCI_DEV_FLAGS_ASSIGNED;
2255 static inline void pci_clear_dev_assigned(struct pci_dev *pdev)
2257 pdev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED;
2259 static inline bool pci_is_dev_assigned(struct pci_dev *pdev)
2261 return (pdev->dev_flags & PCI_DEV_FLAGS_ASSIGNED) == PCI_DEV_FLAGS_ASSIGNED;
2265 * pci_ari_enabled - query ARI forwarding status
2268 * Returns true if ARI forwarding is enabled.
2270 static inline bool pci_ari_enabled(struct pci_bus *bus)
2272 return bus->self && bus->self->ari_enabled;
2276 * pci_is_thunderbolt_attached - whether device is on a Thunderbolt daisy chain
2277 * @pdev: PCI device to check
2279 * Walk upwards from @pdev and check for each encountered bridge if it's part
2280 * of a Thunderbolt controller. Reaching the host bridge means @pdev is not
2281 * Thunderbolt-attached. (But rather soldered to the mainboard usually.)
2283 static inline bool pci_is_thunderbolt_attached(struct pci_dev *pdev)
2285 struct pci_dev *parent = pdev;
2287 if (pdev->is_thunderbolt)
2290 while ((parent = pci_upstream_bridge(parent)))
2291 if (parent->is_thunderbolt)
2297 #if defined(CONFIG_PCIEPORTBUS) || defined(CONFIG_EEH)
2298 void pci_uevent_ers(struct pci_dev *pdev, enum pci_ers_result err_type);
2301 /* Provide the legacy pci_dma_* API */
2302 #include <linux/pci-dma-compat.h>
2304 #define pci_printk(level, pdev, fmt, arg...) \
2305 dev_printk(level, &(pdev)->dev, fmt, ##arg)
2307 #define pci_emerg(pdev, fmt, arg...) dev_emerg(&(pdev)->dev, fmt, ##arg)
2308 #define pci_alert(pdev, fmt, arg...) dev_alert(&(pdev)->dev, fmt, ##arg)
2309 #define pci_crit(pdev, fmt, arg...) dev_crit(&(pdev)->dev, fmt, ##arg)
2310 #define pci_err(pdev, fmt, arg...) dev_err(&(pdev)->dev, fmt, ##arg)
2311 #define pci_warn(pdev, fmt, arg...) dev_warn(&(pdev)->dev, fmt, ##arg)
2312 #define pci_notice(pdev, fmt, arg...) dev_notice(&(pdev)->dev, fmt, ##arg)
2313 #define pci_info(pdev, fmt, arg...) dev_info(&(pdev)->dev, fmt, ##arg)
2314 #define pci_dbg(pdev, fmt, arg...) dev_dbg(&(pdev)->dev, fmt, ##arg)
2316 #endif /* LINUX_PCI_H */