1 /* 2 * pci.h 3 * 4 * PCI defines and function prototypes 5 * Copyright 1994, Drew Eckhardt 6 * Copyright 1997--1999 Martin Mares <[email protected]> 7 * 8 * For more information, please consult the following manuals (look at 9 * http://www.pcisig.com/ for how to get them): 10 * 11 * PCI BIOS Specification 12 * PCI Local Bus Specification 13 * PCI to PCI Bridge Specification 14 * PCI System Design Guide 15 */ 16 17 #ifndef LINUX_PCI_H 18 #define LINUX_PCI_H 19 20 #include <linux/pci_regs.h> /* The pci register defines */ 21 22 /* 23 * The PCI interface treats multi-function devices as independent 24 * devices. The slot/function address of each device is encoded 25 * in a single byte as follows: 26 * 27 * 7:3 = slot 28 * 2:0 = function 29 */ 30 #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 31 #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 32 #define PCI_FUNC(devfn) ((devfn) & 0x07) 33 34 /* Ioctls for /proc/bus/pci/X/Y nodes. */ 35 #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) 36 #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ 37 #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ 38 #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ 39 #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ 40 41 #ifdef __KERNEL__ 42 43 #include <linux/mod_devicetable.h> 44 45 #include <linux/types.h> 46 #include <linux/init.h> 47 #include <linux/ioport.h> 48 #include <linux/list.h> 49 #include <linux/compiler.h> 50 #include <linux/errno.h> 51 #include <linux/kobject.h> 52 #include <asm/atomic.h> 53 #include <linux/device.h> 54 #include <linux/io.h> 55 #include <linux/irqreturn.h> 56 57 /* Include the ID list */ 58 #include <linux/pci_ids.h> 59 60 /* pci_slot represents a physical slot */ 61 struct pci_slot { 62 struct pci_bus *bus; /* The bus this slot is on */ 63 struct list_head list; /* node in list of slots on this bus */ 64 struct hotplug_slot *hotplug; /* Hotplug info (migrate over time) */ 65 unsigned char number; /* PCI_SLOT(pci_dev->devfn) */ 66 struct kobject kobj; 67 }; 68 69 static inline const char *pci_slot_name(const struct pci_slot *slot) 70 { 71 return kobject_name(&slot->kobj); 72 } 73 74 /* File state for mmap()s on /proc/bus/pci/X/Y */ 75 enum pci_mmap_state { 76 pci_mmap_io, 77 pci_mmap_mem 78 }; 79 80 /* This defines the direction arg to the DMA mapping routines. */ 81 #define PCI_DMA_BIDIRECTIONAL 0 82 #define PCI_DMA_TODEVICE 1 83 #define PCI_DMA_FROMDEVICE 2 84 #define PCI_DMA_NONE 3 85 86 /* 87 * For PCI devices, the region numbers are assigned this way: 88 */ 89 enum { 90 /* #0-5: standard PCI resources */ 91 PCI_STD_RESOURCES, 92 PCI_STD_RESOURCE_END = 5, 93 94 /* #6: expansion ROM resource */ 95 PCI_ROM_RESOURCE, 96 97 /* device specific resources */ 98 #ifdef CONFIG_PCI_IOV 99 PCI_IOV_RESOURCES, 100 PCI_IOV_RESOURCE_END = PCI_IOV_RESOURCES + PCI_SRIOV_NUM_BARS - 1, 101 #endif 102 103 /* resources assigned to buses behind the bridge */ 104 #define PCI_BRIDGE_RESOURCE_NUM 4 105 106 PCI_BRIDGE_RESOURCES, 107 PCI_BRIDGE_RESOURCE_END = PCI_BRIDGE_RESOURCES + 108 PCI_BRIDGE_RESOURCE_NUM - 1, 109 110 /* total resources associated with a PCI device */ 111 PCI_NUM_RESOURCES, 112 113 /* preserve this for compatibility */ 114 DEVICE_COUNT_RESOURCE 115 }; 116 117 typedef int __bitwise pci_power_t; 118 119 #define PCI_D0 ((pci_power_t __force) 0) 120 #define PCI_D1 ((pci_power_t __force) 1) 121 #define PCI_D2 ((pci_power_t __force) 2) 122 #define PCI_D3hot ((pci_power_t __force) 3) 123 #define PCI_D3cold ((pci_power_t __force) 4) 124 #define PCI_UNKNOWN ((pci_power_t __force) 5) 125 #define PCI_POWER_ERROR ((pci_power_t __force) -1) 126 127 #define PCI_PM_D2_DELAY 200 128 #define PCI_PM_D3_WAIT 10 129 #define PCI_PM_BUS_WAIT 50 130 131 /** The pci_channel state describes connectivity between the CPU and 132 * the pci device. If some PCI bus between here and the pci device 133 * has crashed or locked up, this info is reflected here. 134 */ 135 typedef unsigned int __bitwise pci_channel_state_t; 136 137 enum pci_channel_state { 138 /* I/O channel is in normal state */ 139 pci_channel_io_normal = (__force pci_channel_state_t) 1, 140 141 /* I/O to channel is blocked */ 142 pci_channel_io_frozen = (__force pci_channel_state_t) 2, 143 144 /* PCI card is dead */ 145 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, 146 }; 147 148 typedef unsigned int __bitwise pcie_reset_state_t; 149 150 enum pcie_reset_state { 151 /* Reset is NOT asserted (Use to deassert reset) */ 152 pcie_deassert_reset = (__force pcie_reset_state_t) 1, 153 154 /* Use #PERST to reset PCI-E device */ 155 pcie_warm_reset = (__force pcie_reset_state_t) 2, 156 157 /* Use PCI-E Hot Reset to reset device */ 158 pcie_hot_reset = (__force pcie_reset_state_t) 3 159 }; 160 161 typedef unsigned short __bitwise pci_dev_flags_t; 162 enum pci_dev_flags { 163 /* INTX_DISABLE in PCI_COMMAND register disables MSI 164 * generation too. 165 */ 166 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, 167 /* Device configuration is irrevocably lost if disabled into D3 */ 168 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, 169 }; 170 171 enum pci_irq_reroute_variant { 172 INTEL_IRQ_REROUTE_VARIANT = 1, 173 MAX_IRQ_REROUTE_VARIANTS = 3 174 }; 175 176 typedef unsigned short __bitwise pci_bus_flags_t; 177 enum pci_bus_flags { 178 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, 179 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, 180 }; 181 182 struct pci_cap_saved_state { 183 struct hlist_node next; 184 char cap_nr; 185 u32 data[0]; 186 }; 187 188 struct pcie_link_state; 189 struct pci_vpd; 190 struct pci_sriov; 191 192 /* 193 * The pci_dev structure is used to describe PCI devices. 194 */ 195 struct pci_dev { 196 struct list_head bus_list; /* node in per-bus list */ 197 struct pci_bus *bus; /* bus this device is on */ 198 struct pci_bus *subordinate; /* bus this device bridges to */ 199 200 void *sysdata; /* hook for sys-specific extension */ 201 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ 202 struct pci_slot *slot; /* Physical slot this device is in */ 203 204 unsigned int devfn; /* encoded device & function index */ 205 unsigned short vendor; 206 unsigned short device; 207 unsigned short subsystem_vendor; 208 unsigned short subsystem_device; 209 unsigned int class; /* 3 bytes: (base,sub,prog-if) */ 210 u8 revision; /* PCI revision, low byte of class word */ 211 u8 hdr_type; /* PCI header type (`multi' flag masked out) */ 212 u8 pcie_type; /* PCI-E device/port type */ 213 u8 rom_base_reg; /* which config register controls the ROM */ 214 u8 pin; /* which interrupt pin this device uses */ 215 216 struct pci_driver *driver; /* which driver has allocated this device */ 217 u64 dma_mask; /* Mask of the bits of bus address this 218 device implements. Normally this is 219 0xffffffff. You only need to change 220 this if your device has broken DMA 221 or supports 64-bit transfers. */ 222 223 struct device_dma_parameters dma_parms; 224 225 pci_power_t current_state; /* Current operating state. In ACPI-speak, 226 this is D0-D3, D0 being fully functional, 227 and D3 being off. */ 228 int pm_cap; /* PM capability offset in the 229 configuration space */ 230 unsigned int pme_support:5; /* Bitmask of states from which PME# 231 can be generated */ 232 unsigned int d1_support:1; /* Low power state D1 is supported */ 233 unsigned int d2_support:1; /* Low power state D2 is supported */ 234 unsigned int no_d1d2:1; /* Only allow D0 and D3 */ 235 236 #ifdef CONFIG_PCIEASPM 237 struct pcie_link_state *link_state; /* ASPM link state. */ 238 #endif 239 240 pci_channel_state_t error_state; /* current connectivity state */ 241 struct device dev; /* Generic device interface */ 242 243 int cfg_size; /* Size of configuration space */ 244 245 /* 246 * Instead of touching interrupt line and base address registers 247 * directly, use the values stored here. They might be different! 248 */ 249 unsigned int irq; 250 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ 251 252 /* These fields are used by common fixups */ 253 unsigned int transparent:1; /* Transparent PCI bridge */ 254 unsigned int multifunction:1;/* Part of multi-function device */ 255 /* keep track of device state */ 256 unsigned int is_added:1; 257 unsigned int is_busmaster:1; /* device is busmaster */ 258 unsigned int no_msi:1; /* device may not use msi */ 259 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ 260 unsigned int broken_parity_status:1; /* Device generates false positive parity */ 261 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ 262 unsigned int msi_enabled:1; 263 unsigned int msix_enabled:1; 264 unsigned int ari_enabled:1; /* ARI forwarding */ 265 unsigned int is_managed:1; 266 unsigned int is_pcie:1; 267 unsigned int state_saved:1; 268 unsigned int is_physfn:1; 269 unsigned int is_virtfn:1; 270 pci_dev_flags_t dev_flags; 271 atomic_t enable_cnt; /* pci_enable_device has been called */ 272 273 u32 saved_config_space[16]; /* config space saved at suspend time */ 274 struct hlist_head saved_cap_space; 275 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ 276 int rom_attr_enabled; /* has display of the rom attribute been enabled? */ 277 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ 278 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ 279 #ifdef CONFIG_PCI_MSI 280 struct list_head msi_list; 281 #endif 282 struct pci_vpd *vpd; 283 #ifdef CONFIG_PCI_IOV 284 union { 285 struct pci_sriov *sriov; /* SR-IOV capability related */ 286 struct pci_dev *physfn; /* the PF this VF is associated with */ 287 }; 288 #endif 289 }; 290 291 extern struct pci_dev *alloc_pci_dev(void); 292 293 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) 294 #define to_pci_dev(n) container_of(n, struct pci_dev, dev) 295 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) 296 297 static inline int pci_channel_offline(struct pci_dev *pdev) 298 { 299 return (pdev->error_state != pci_channel_io_normal); 300 } 301 302 static inline struct pci_cap_saved_state *pci_find_saved_cap( 303 struct pci_dev *pci_dev, char cap) 304 { 305 struct pci_cap_saved_state *tmp; 306 struct hlist_node *pos; 307 308 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { 309 if (tmp->cap_nr == cap) 310 return tmp; 311 } 312 return NULL; 313 } 314 315 static inline void pci_add_saved_cap(struct pci_dev *pci_dev, 316 struct pci_cap_saved_state *new_cap) 317 { 318 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space); 319 } 320 321 #ifndef PCI_BUS_NUM_RESOURCES 322 #define PCI_BUS_NUM_RESOURCES 16 323 #endif 324 325 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ 326 327 struct pci_bus { 328 struct list_head node; /* node in list of buses */ 329 struct pci_bus *parent; /* parent bus this bridge is on */ 330 struct list_head children; /* list of child buses */ 331 struct list_head devices; /* list of devices on this bus */ 332 struct pci_dev *self; /* bridge device as seen by parent */ 333 struct list_head slots; /* list of slots on this bus */ 334 struct resource *resource[PCI_BUS_NUM_RESOURCES]; 335 /* address space routed to this bus */ 336 337 struct pci_ops *ops; /* configuration access functions */ 338 void *sysdata; /* hook for sys-specific extension */ 339 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ 340 341 unsigned char number; /* bus number */ 342 unsigned char primary; /* number of primary bridge */ 343 unsigned char secondary; /* number of secondary bridge */ 344 unsigned char subordinate; /* max number of subordinate buses */ 345 346 char name[48]; 347 348 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ 349 pci_bus_flags_t bus_flags; /* Inherited by child busses */ 350 struct device *bridge; 351 struct device dev; 352 struct bin_attribute *legacy_io; /* legacy I/O for this bus */ 353 struct bin_attribute *legacy_mem; /* legacy mem */ 354 unsigned int is_added:1; 355 }; 356 357 #define pci_bus_b(n) list_entry(n, struct pci_bus, node) 358 #define to_pci_bus(n) container_of(n, struct pci_bus, dev) 359 360 /* 361 * Returns true if the pci bus is root (behind host-pci bridge), 362 * false otherwise 363 */ 364 static inline bool pci_is_root_bus(struct pci_bus *pbus) 365 { 366 return !(pbus->parent); 367 } 368 369 #ifdef CONFIG_PCI_MSI 370 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) 371 { 372 return pci_dev->msi_enabled || pci_dev->msix_enabled; 373 } 374 #else 375 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } 376 #endif 377 378 /* 379 * Error values that may be returned by PCI functions. 380 */ 381 #define PCIBIOS_SUCCESSFUL 0x00 382 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 383 #define PCIBIOS_BAD_VENDOR_ID 0x83 384 #define PCIBIOS_DEVICE_NOT_FOUND 0x86 385 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 386 #define PCIBIOS_SET_FAILED 0x88 387 #define PCIBIOS_BUFFER_TOO_SMALL 0x89 388 389 /* Low-level architecture-dependent routines */ 390 391 struct pci_ops { 392 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); 393 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); 394 }; 395 396 /* 397 * ACPI needs to be able to access PCI config space before we've done a 398 * PCI bus scan and created pci_bus structures. 399 */ 400 extern int raw_pci_read(unsigned int domain, unsigned int bus, 401 unsigned int devfn, int reg, int len, u32 *val); 402 extern int raw_pci_write(unsigned int domain, unsigned int bus, 403 unsigned int devfn, int reg, int len, u32 val); 404 405 struct pci_bus_region { 406 resource_size_t start; 407 resource_size_t end; 408 }; 409 410 struct pci_dynids { 411 spinlock_t lock; /* protects list, index */ 412 struct list_head list; /* for IDs added at runtime */ 413 }; 414 415 /* ---------------------------------------------------------------- */ 416 /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides 417 * a set of callbacks in struct pci_error_handlers, then that device driver 418 * will be notified of PCI bus errors, and will be driven to recovery 419 * when an error occurs. 420 */ 421 422 typedef unsigned int __bitwise pci_ers_result_t; 423 424 enum pci_ers_result { 425 /* no result/none/not supported in device driver */ 426 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, 427 428 /* Device driver can recover without slot reset */ 429 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, 430 431 /* Device driver wants slot to be reset. */ 432 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, 433 434 /* Device has completely failed, is unrecoverable */ 435 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, 436 437 /* Device driver is fully recovered and operational */ 438 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, 439 }; 440 441 /* PCI bus error event callbacks */ 442 struct pci_error_handlers { 443 /* PCI bus error detected on this device */ 444 pci_ers_result_t (*error_detected)(struct pci_dev *dev, 445 enum pci_channel_state error); 446 447 /* MMIO has been re-enabled, but not DMA */ 448 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); 449 450 /* PCI Express link has been reset */ 451 pci_ers_result_t (*link_reset)(struct pci_dev *dev); 452 453 /* PCI slot has been reset */ 454 pci_ers_result_t (*slot_reset)(struct pci_dev *dev); 455 456 /* Device driver may resume normal operations */ 457 void (*resume)(struct pci_dev *dev); 458 }; 459 460 /* ---------------------------------------------------------------- */ 461 462 struct module; 463 struct pci_driver { 464 struct list_head node; 465 char *name; 466 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ 467 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ 468 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ 469 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ 470 int (*suspend_late) (struct pci_dev *dev, pm_message_t state); 471 int (*resume_early) (struct pci_dev *dev); 472 int (*resume) (struct pci_dev *dev); /* Device woken up */ 473 void (*shutdown) (struct pci_dev *dev); 474 struct pci_error_handlers *err_handler; 475 struct device_driver driver; 476 struct pci_dynids dynids; 477 }; 478 479 #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) 480 481 /** 482 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table 483 * @_table: device table name 484 * 485 * This macro is used to create a struct pci_device_id array (a device table) 486 * in a generic manner. 487 */ 488 #define DEFINE_PCI_DEVICE_TABLE(_table) \ 489 const struct pci_device_id _table[] __devinitconst 490 491 /** 492 * PCI_DEVICE - macro used to describe a specific pci device 493 * @vend: the 16 bit PCI Vendor ID 494 * @dev: the 16 bit PCI Device ID 495 * 496 * This macro is used to create a struct pci_device_id that matches a 497 * specific device. The subvendor and subdevice fields will be set to 498 * PCI_ANY_ID. 499 */ 500 #define PCI_DEVICE(vend,dev) \ 501 .vendor = (vend), .device = (dev), \ 502 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 503 504 /** 505 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class 506 * @dev_class: the class, subclass, prog-if triple for this device 507 * @dev_class_mask: the class mask for this device 508 * 509 * This macro is used to create a struct pci_device_id that matches a 510 * specific PCI class. The vendor, device, subvendor, and subdevice 511 * fields will be set to PCI_ANY_ID. 512 */ 513 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ 514 .class = (dev_class), .class_mask = (dev_class_mask), \ 515 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ 516 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 517 518 /** 519 * PCI_VDEVICE - macro used to describe a specific pci device in short form 520 * @vendor: the vendor name 521 * @device: the 16 bit PCI Device ID 522 * 523 * This macro is used to create a struct pci_device_id that matches a 524 * specific PCI device. The subvendor, and subdevice fields will be set 525 * to PCI_ANY_ID. The macro allows the next field to follow as the device 526 * private data. 527 */ 528 529 #define PCI_VDEVICE(vendor, device) \ 530 PCI_VENDOR_ID_##vendor, (device), \ 531 PCI_ANY_ID, PCI_ANY_ID, 0, 0 532 533 /* these external functions are only available when PCI support is enabled */ 534 #ifdef CONFIG_PCI 535 536 extern struct bus_type pci_bus_type; 537 538 /* Do NOT directly access these two variables, unless you are arch specific pci 539 * code, or pci core code. */ 540 extern struct list_head pci_root_buses; /* list of all known PCI buses */ 541 /* Some device drivers need know if pci is initiated */ 542 extern int no_pci_devices(void); 543 544 void pcibios_fixup_bus(struct pci_bus *); 545 int __must_check pcibios_enable_device(struct pci_dev *, int mask); 546 char *pcibios_setup(char *str); 547 548 /* Used only when drivers/pci/setup.c is used */ 549 void pcibios_align_resource(void *, struct resource *, resource_size_t, 550 resource_size_t); 551 void pcibios_update_irq(struct pci_dev *, int irq); 552 553 /* Generic PCI functions used internally */ 554 555 extern struct pci_bus *pci_find_bus(int domain, int busnr); 556 void pci_bus_add_devices(const struct pci_bus *bus); 557 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, 558 struct pci_ops *ops, void *sysdata); 559 static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops, 560 void *sysdata) 561 { 562 struct pci_bus *root_bus; 563 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); 564 if (root_bus) 565 pci_bus_add_devices(root_bus); 566 return root_bus; 567 } 568 struct pci_bus *pci_create_bus(struct device *parent, int bus, 569 struct pci_ops *ops, void *sysdata); 570 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, 571 int busnr); 572 struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, 573 const char *name, 574 struct hotplug_slot *hotplug); 575 void pci_destroy_slot(struct pci_slot *slot); 576 void pci_renumber_slot(struct pci_slot *slot, int slot_nr); 577 int pci_scan_slot(struct pci_bus *bus, int devfn); 578 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); 579 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); 580 unsigned int pci_scan_child_bus(struct pci_bus *bus); 581 int __must_check pci_bus_add_device(struct pci_dev *dev); 582 void pci_read_bridge_bases(struct pci_bus *child); 583 struct resource *pci_find_parent_resource(const struct pci_dev *dev, 584 struct resource *res); 585 u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin); 586 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); 587 u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); 588 extern struct pci_dev *pci_dev_get(struct pci_dev *dev); 589 extern void pci_dev_put(struct pci_dev *dev); 590 extern void pci_remove_bus(struct pci_bus *b); 591 extern void pci_remove_bus_device(struct pci_dev *dev); 592 extern void pci_stop_bus_device(struct pci_dev *dev); 593 void pci_setup_cardbus(struct pci_bus *bus); 594 extern void pci_sort_breadthfirst(void); 595 596 /* Generic PCI functions exported to card drivers */ 597 598 #ifdef CONFIG_PCI_LEGACY 599 struct pci_dev __deprecated *pci_find_device(unsigned int vendor, 600 unsigned int device, 601 struct pci_dev *from); 602 struct pci_dev __deprecated *pci_find_slot(unsigned int bus, 603 unsigned int devfn); 604 #endif /* CONFIG_PCI_LEGACY */ 605 606 enum pci_lost_interrupt_reason { 607 PCI_LOST_IRQ_NO_INFORMATION = 0, 608 PCI_LOST_IRQ_DISABLE_MSI, 609 PCI_LOST_IRQ_DISABLE_MSIX, 610 PCI_LOST_IRQ_DISABLE_ACPI, 611 }; 612 enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); 613 int pci_find_capability(struct pci_dev *dev, int cap); 614 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); 615 int pci_find_ext_capability(struct pci_dev *dev, int cap); 616 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); 617 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); 618 struct pci_bus *pci_find_next_bus(const struct pci_bus *from); 619 620 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, 621 struct pci_dev *from); 622 struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, 623 unsigned int ss_vendor, unsigned int ss_device, 624 struct pci_dev *from); 625 struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); 626 struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); 627 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); 628 int pci_dev_present(const struct pci_device_id *ids); 629 630 int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, 631 int where, u8 *val); 632 int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, 633 int where, u16 *val); 634 int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, 635 int where, u32 *val); 636 int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, 637 int where, u8 val); 638 int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, 639 int where, u16 val); 640 int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, 641 int where, u32 val); 642 643 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) 644 { 645 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); 646 } 647 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) 648 { 649 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); 650 } 651 static inline int pci_read_config_dword(struct pci_dev *dev, int where, 652 u32 *val) 653 { 654 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); 655 } 656 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) 657 { 658 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); 659 } 660 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) 661 { 662 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); 663 } 664 static inline int pci_write_config_dword(struct pci_dev *dev, int where, 665 u32 val) 666 { 667 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); 668 } 669 670 int __must_check pci_enable_device(struct pci_dev *dev); 671 int __must_check pci_enable_device_io(struct pci_dev *dev); 672 int __must_check pci_enable_device_mem(struct pci_dev *dev); 673 int __must_check pci_reenable_device(struct pci_dev *); 674 int __must_check pcim_enable_device(struct pci_dev *pdev); 675 void pcim_pin_device(struct pci_dev *pdev); 676 677 static inline int pci_is_enabled(struct pci_dev *pdev) 678 { 679 return (atomic_read(&pdev->enable_cnt) > 0); 680 } 681 682 static inline int pci_is_managed(struct pci_dev *pdev) 683 { 684 return pdev->is_managed; 685 } 686 687 void pci_disable_device(struct pci_dev *dev); 688 void pci_set_master(struct pci_dev *dev); 689 void pci_clear_master(struct pci_dev *dev); 690 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); 691 #define HAVE_PCI_SET_MWI 692 int __must_check pci_set_mwi(struct pci_dev *dev); 693 int pci_try_set_mwi(struct pci_dev *dev); 694 void pci_clear_mwi(struct pci_dev *dev); 695 void pci_intx(struct pci_dev *dev, int enable); 696 void pci_msi_off(struct pci_dev *dev); 697 int pci_set_dma_mask(struct pci_dev *dev, u64 mask); 698 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); 699 int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); 700 int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); 701 int pcix_get_max_mmrbc(struct pci_dev *dev); 702 int pcix_get_mmrbc(struct pci_dev *dev); 703 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); 704 int pcie_get_readrq(struct pci_dev *dev); 705 int pcie_set_readrq(struct pci_dev *dev, int rq); 706 int pci_reset_function(struct pci_dev *dev); 707 int pci_execute_reset_function(struct pci_dev *dev); 708 void pci_update_resource(struct pci_dev *dev, int resno); 709 int __must_check pci_assign_resource(struct pci_dev *dev, int i); 710 int pci_select_bars(struct pci_dev *dev, unsigned long flags); 711 712 /* ROM control related routines */ 713 int pci_enable_rom(struct pci_dev *pdev); 714 void pci_disable_rom(struct pci_dev *pdev); 715 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); 716 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); 717 size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); 718 719 /* Power management related routines */ 720 int pci_save_state(struct pci_dev *dev); 721 int pci_restore_state(struct pci_dev *dev); 722 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); 723 int pci_set_power_state(struct pci_dev *dev, pci_power_t state); 724 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); 725 bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); 726 void pci_pme_active(struct pci_dev *dev, bool enable); 727 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); 728 int pci_wake_from_d3(struct pci_dev *dev, bool enable); 729 pci_power_t pci_target_state(struct pci_dev *dev); 730 int pci_prepare_to_sleep(struct pci_dev *dev); 731 int pci_back_from_sleep(struct pci_dev *dev); 732 733 /* Functions for PCI Hotplug drivers to use */ 734 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); 735 #ifdef CONFIG_HOTPLUG 736 unsigned int pci_rescan_bus(struct pci_bus *bus); 737 #endif 738 739 /* Vital product data routines */ 740 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); 741 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); 742 int pci_vpd_truncate(struct pci_dev *dev, size_t size); 743 744 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ 745 void pci_bus_assign_resources(const struct pci_bus *bus); 746 void pci_bus_size_bridges(struct pci_bus *bus); 747 int pci_claim_resource(struct pci_dev *, int); 748 void pci_assign_unassigned_resources(void); 749 void pdev_enable_device(struct pci_dev *); 750 void pdev_sort_resources(struct pci_dev *, struct resource_list *); 751 int pci_enable_resources(struct pci_dev *, int mask); 752 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), 753 int (*)(struct pci_dev *, u8, u8)); 754 #define HAVE_PCI_REQ_REGIONS 2 755 int __must_check pci_request_regions(struct pci_dev *, const char *); 756 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); 757 void pci_release_regions(struct pci_dev *); 758 int __must_check pci_request_region(struct pci_dev *, int, const char *); 759 int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); 760 void pci_release_region(struct pci_dev *, int); 761 int pci_request_selected_regions(struct pci_dev *, int, const char *); 762 int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); 763 void pci_release_selected_regions(struct pci_dev *, int); 764 765 /* drivers/pci/bus.c */ 766 int __must_check pci_bus_alloc_resource(struct pci_bus *bus, 767 struct resource *res, resource_size_t size, 768 resource_size_t align, resource_size_t min, 769 unsigned int type_mask, 770 void (*alignf)(void *, struct resource *, 771 resource_size_t, resource_size_t), 772 void *alignf_data); 773 void pci_enable_bridges(struct pci_bus *bus); 774 775 /* Proper probing supporting hot-pluggable devices */ 776 int __must_check __pci_register_driver(struct pci_driver *, struct module *, 777 const char *mod_name); 778 779 /* 780 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded 781 */ 782 #define pci_register_driver(driver) \ 783 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 784 785 void pci_unregister_driver(struct pci_driver *dev); 786 void pci_remove_behind_bridge(struct pci_dev *dev); 787 struct pci_driver *pci_dev_driver(const struct pci_dev *dev); 788 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, 789 struct pci_dev *dev); 790 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, 791 int pass); 792 793 void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), 794 void *userdata); 795 int pci_cfg_space_size_ext(struct pci_dev *dev); 796 int pci_cfg_space_size(struct pci_dev *dev); 797 unsigned char pci_bus_max_busnr(struct pci_bus *bus); 798 799 /* kmem_cache style wrapper around pci_alloc_consistent() */ 800 801 #include <linux/dmapool.h> 802 803 #define pci_pool dma_pool 804 #define pci_pool_create(name, pdev, size, align, allocation) \ 805 dma_pool_create(name, &pdev->dev, size, align, allocation) 806 #define pci_pool_destroy(pool) dma_pool_destroy(pool) 807 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) 808 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) 809 810 enum pci_dma_burst_strategy { 811 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, 812 strategy_parameter is N/A */ 813 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter 814 byte boundaries */ 815 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of 816 strategy_parameter byte boundaries */ 817 }; 818 819 struct msix_entry { 820 u32 vector; /* kernel uses to write allocated vector */ 821 u16 entry; /* driver uses to specify entry, OS writes */ 822 }; 823 824 825 #ifndef CONFIG_PCI_MSI 826 static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec) 827 { 828 return -1; 829 } 830 831 static inline void pci_msi_shutdown(struct pci_dev *dev) 832 { } 833 static inline void pci_disable_msi(struct pci_dev *dev) 834 { } 835 836 static inline int pci_msix_table_size(struct pci_dev *dev) 837 { 838 return 0; 839 } 840 static inline int pci_enable_msix(struct pci_dev *dev, 841 struct msix_entry *entries, int nvec) 842 { 843 return -1; 844 } 845 846 static inline void pci_msix_shutdown(struct pci_dev *dev) 847 { } 848 static inline void pci_disable_msix(struct pci_dev *dev) 849 { } 850 851 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) 852 { } 853 854 static inline void pci_restore_msi_state(struct pci_dev *dev) 855 { } 856 static inline int pci_msi_enabled(void) 857 { 858 return 0; 859 } 860 #else 861 extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); 862 extern void pci_msi_shutdown(struct pci_dev *dev); 863 extern void pci_disable_msi(struct pci_dev *dev); 864 extern int pci_msix_table_size(struct pci_dev *dev); 865 extern int pci_enable_msix(struct pci_dev *dev, 866 struct msix_entry *entries, int nvec); 867 extern void pci_msix_shutdown(struct pci_dev *dev); 868 extern void pci_disable_msix(struct pci_dev *dev); 869 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); 870 extern void pci_restore_msi_state(struct pci_dev *dev); 871 extern int pci_msi_enabled(void); 872 #endif 873 874 #ifndef CONFIG_PCIEASPM 875 static inline int pcie_aspm_enabled(void) 876 { 877 return 0; 878 } 879 #else 880 extern int pcie_aspm_enabled(void); 881 #endif 882 883 #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) 884 885 #ifdef CONFIG_HT_IRQ 886 /* The functions a driver should call */ 887 int ht_create_irq(struct pci_dev *dev, int idx); 888 void ht_destroy_irq(unsigned int irq); 889 #endif /* CONFIG_HT_IRQ */ 890 891 extern void pci_block_user_cfg_access(struct pci_dev *dev); 892 extern void pci_unblock_user_cfg_access(struct pci_dev *dev); 893 894 /* 895 * PCI domain support. Sometimes called PCI segment (eg by ACPI), 896 * a PCI domain is defined to be a set of PCI busses which share 897 * configuration space. 898 */ 899 #ifdef CONFIG_PCI_DOMAINS 900 extern int pci_domains_supported; 901 #else 902 enum { pci_domains_supported = 0 }; 903 static inline int pci_domain_nr(struct pci_bus *bus) 904 { 905 return 0; 906 } 907 908 static inline int pci_proc_domain(struct pci_bus *bus) 909 { 910 return 0; 911 } 912 #endif /* CONFIG_PCI_DOMAINS */ 913 914 #else /* CONFIG_PCI is not enabled */ 915 916 /* 917 * If the system does not have PCI, clearly these return errors. Define 918 * these as simple inline functions to avoid hair in drivers. 919 */ 920 921 #define _PCI_NOP(o, s, t) \ 922 static inline int pci_##o##_config_##s(struct pci_dev *dev, \ 923 int where, t val) \ 924 { return PCIBIOS_FUNC_NOT_SUPPORTED; } 925 926 #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ 927 _PCI_NOP(o, word, u16 x) \ 928 _PCI_NOP(o, dword, u32 x) 929 _PCI_NOP_ALL(read, *) 930 _PCI_NOP_ALL(write,) 931 932 static inline struct pci_dev *pci_find_device(unsigned int vendor, 933 unsigned int device, 934 struct pci_dev *from) 935 { 936 return NULL; 937 } 938 939 static inline struct pci_dev *pci_find_slot(unsigned int bus, 940 unsigned int devfn) 941 { 942 return NULL; 943 } 944 945 static inline struct pci_dev *pci_get_device(unsigned int vendor, 946 unsigned int device, 947 struct pci_dev *from) 948 { 949 return NULL; 950 } 951 952 static inline struct pci_dev *pci_get_subsys(unsigned int vendor, 953 unsigned int device, 954 unsigned int ss_vendor, 955 unsigned int ss_device, 956 struct pci_dev *from) 957 { 958 return NULL; 959 } 960 961 static inline struct pci_dev *pci_get_class(unsigned int class, 962 struct pci_dev *from) 963 { 964 return NULL; 965 } 966 967 #define pci_dev_present(ids) (0) 968 #define no_pci_devices() (1) 969 #define pci_dev_put(dev) do { } while (0) 970 971 static inline void pci_set_master(struct pci_dev *dev) 972 { } 973 974 static inline int pci_enable_device(struct pci_dev *dev) 975 { 976 return -EIO; 977 } 978 979 static inline void pci_disable_device(struct pci_dev *dev) 980 { } 981 982 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) 983 { 984 return -EIO; 985 } 986 987 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) 988 { 989 return -EIO; 990 } 991 992 static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, 993 unsigned int size) 994 { 995 return -EIO; 996 } 997 998 static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, 999 unsigned long mask) 1000 { 1001 return -EIO; 1002 } 1003 1004 static inline int pci_assign_resource(struct pci_dev *dev, int i) 1005 { 1006 return -EBUSY; 1007 } 1008 1009 static inline int __pci_register_driver(struct pci_driver *drv, 1010 struct module *owner) 1011 { 1012 return 0; 1013 } 1014 1015 static inline int pci_register_driver(struct pci_driver *drv) 1016 { 1017 return 0; 1018 } 1019 1020 static inline void pci_unregister_driver(struct pci_driver *drv) 1021 { } 1022 1023 static inline int pci_find_capability(struct pci_dev *dev, int cap) 1024 { 1025 return 0; 1026 } 1027 1028 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, 1029 int cap) 1030 { 1031 return 0; 1032 } 1033 1034 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) 1035 { 1036 return 0; 1037 } 1038 1039 /* Power management related routines */ 1040 static inline int pci_save_state(struct pci_dev *dev) 1041 { 1042 return 0; 1043 } 1044 1045 static inline int pci_restore_state(struct pci_dev *dev) 1046 { 1047 return 0; 1048 } 1049 1050 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) 1051 { 1052 return 0; 1053 } 1054 1055 static inline pci_power_t pci_choose_state(struct pci_dev *dev, 1056 pm_message_t state) 1057 { 1058 return PCI_D0; 1059 } 1060 1061 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, 1062 int enable) 1063 { 1064 return 0; 1065 } 1066 1067 static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) 1068 { 1069 return -EIO; 1070 } 1071 1072 static inline void pci_release_regions(struct pci_dev *dev) 1073 { } 1074 1075 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) 1076 1077 static inline void pci_block_user_cfg_access(struct pci_dev *dev) 1078 { } 1079 1080 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) 1081 { } 1082 1083 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) 1084 { return NULL; } 1085 1086 static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, 1087 unsigned int devfn) 1088 { return NULL; } 1089 1090 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, 1091 unsigned int devfn) 1092 { return NULL; } 1093 1094 #endif /* CONFIG_PCI */ 1095 1096 /* Include architecture-dependent settings and functions */ 1097 1098 #include <asm/pci.h> 1099 1100 /* these helpers provide future and backwards compatibility 1101 * for accessing popular PCI BAR info */ 1102 #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) 1103 #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) 1104 #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) 1105 #define pci_resource_len(dev,bar) \ 1106 ((pci_resource_start((dev), (bar)) == 0 && \ 1107 pci_resource_end((dev), (bar)) == \ 1108 pci_resource_start((dev), (bar))) ? 0 : \ 1109 \ 1110 (pci_resource_end((dev), (bar)) - \ 1111 pci_resource_start((dev), (bar)) + 1)) 1112 1113 /* Similar to the helpers above, these manipulate per-pci_dev 1114 * driver-specific data. They are really just a wrapper around 1115 * the generic device structure functions of these calls. 1116 */ 1117 static inline void *pci_get_drvdata(struct pci_dev *pdev) 1118 { 1119 return dev_get_drvdata(&pdev->dev); 1120 } 1121 1122 static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) 1123 { 1124 dev_set_drvdata(&pdev->dev, data); 1125 } 1126 1127 /* If you want to know what to call your pci_dev, ask this function. 1128 * Again, it's a wrapper around the generic device. 1129 */ 1130 static inline const char *pci_name(struct pci_dev *pdev) 1131 { 1132 return dev_name(&pdev->dev); 1133 } 1134 1135 1136 /* Some archs don't want to expose struct resource to userland as-is 1137 * in sysfs and /proc 1138 */ 1139 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER 1140 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, 1141 const struct resource *rsrc, resource_size_t *start, 1142 resource_size_t *end) 1143 { 1144 *start = rsrc->start; 1145 *end = rsrc->end; 1146 } 1147 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ 1148 1149 1150 /* 1151 * The world is not perfect and supplies us with broken PCI devices. 1152 * For at least a part of these bugs we need a work-around, so both 1153 * generic (drivers/pci/quirks.c) and per-architecture code can define 1154 * fixup hooks to be called for particular buggy devices. 1155 */ 1156 1157 struct pci_fixup { 1158 u16 vendor, device; /* You can use PCI_ANY_ID here of course */ 1159 void (*hook)(struct pci_dev *dev); 1160 }; 1161 1162 enum pci_fixup_pass { 1163 pci_fixup_early, /* Before probing BARs */ 1164 pci_fixup_header, /* After reading configuration header */ 1165 pci_fixup_final, /* Final phase of device fixups */ 1166 pci_fixup_enable, /* pci_enable_device() time */ 1167 pci_fixup_resume, /* pci_device_resume() */ 1168 pci_fixup_suspend, /* pci_device_suspend */ 1169 pci_fixup_resume_early, /* pci_device_resume_early() */ 1170 }; 1171 1172 /* Anonymous variables would be nice... */ 1173 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ 1174 static const struct pci_fixup __pci_fixup_##name __used \ 1175 __attribute__((__section__(#section))) = { vendor, device, hook }; 1176 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ 1177 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ 1178 vendor##device##hook, vendor, device, hook) 1179 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ 1180 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ 1181 vendor##device##hook, vendor, device, hook) 1182 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ 1183 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ 1184 vendor##device##hook, vendor, device, hook) 1185 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ 1186 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ 1187 vendor##device##hook, vendor, device, hook) 1188 #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ 1189 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ 1190 resume##vendor##device##hook, vendor, device, hook) 1191 #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ 1192 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ 1193 resume_early##vendor##device##hook, vendor, device, hook) 1194 #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ 1195 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ 1196 suspend##vendor##device##hook, vendor, device, hook) 1197 1198 1199 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); 1200 1201 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); 1202 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); 1203 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); 1204 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); 1205 int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, 1206 const char *name); 1207 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask); 1208 1209 extern int pci_pci_problems; 1210 #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ 1211 #define PCIPCI_TRITON 2 1212 #define PCIPCI_NATOMA 4 1213 #define PCIPCI_VIAETBF 8 1214 #define PCIPCI_VSFX 16 1215 #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ 1216 #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ 1217 1218 extern unsigned long pci_cardbus_io_size; 1219 extern unsigned long pci_cardbus_mem_size; 1220 1221 int pcibios_add_platform_entries(struct pci_dev *dev); 1222 void pcibios_disable_device(struct pci_dev *dev); 1223 int pcibios_set_pcie_reset_state(struct pci_dev *dev, 1224 enum pcie_reset_state state); 1225 1226 #ifdef CONFIG_PCI_MMCONFIG 1227 extern void __init pci_mmcfg_early_init(void); 1228 extern void __init pci_mmcfg_late_init(void); 1229 #else 1230 static inline void pci_mmcfg_early_init(void) { } 1231 static inline void pci_mmcfg_late_init(void) { } 1232 #endif 1233 1234 int pci_ext_cfg_avail(struct pci_dev *dev); 1235 1236 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); 1237 1238 #ifdef CONFIG_PCI_IOV 1239 extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); 1240 extern void pci_disable_sriov(struct pci_dev *dev); 1241 extern irqreturn_t pci_sriov_migration(struct pci_dev *dev); 1242 #else 1243 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) 1244 { 1245 return -ENODEV; 1246 } 1247 static inline void pci_disable_sriov(struct pci_dev *dev) 1248 { 1249 } 1250 static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev) 1251 { 1252 return IRQ_NONE; 1253 } 1254 #endif 1255 1256 #endif /* __KERNEL__ */ 1257 #endif /* LINUX_PCI_H */ 1258