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 /* Remember to update this when the list above changes! */ 128 extern const char *pci_power_names[]; 129 130 static inline const char *pci_power_name(pci_power_t state) 131 { 132 return pci_power_names[1 + (int) state]; 133 } 134 135 #define PCI_PM_D2_DELAY 200 136 #define PCI_PM_D3_WAIT 10 137 #define PCI_PM_BUS_WAIT 50 138 139 /** The pci_channel state describes connectivity between the CPU and 140 * the pci device. If some PCI bus between here and the pci device 141 * has crashed or locked up, this info is reflected here. 142 */ 143 typedef unsigned int __bitwise pci_channel_state_t; 144 145 enum pci_channel_state { 146 /* I/O channel is in normal state */ 147 pci_channel_io_normal = (__force pci_channel_state_t) 1, 148 149 /* I/O to channel is blocked */ 150 pci_channel_io_frozen = (__force pci_channel_state_t) 2, 151 152 /* PCI card is dead */ 153 pci_channel_io_perm_failure = (__force pci_channel_state_t) 3, 154 }; 155 156 typedef unsigned int __bitwise pcie_reset_state_t; 157 158 enum pcie_reset_state { 159 /* Reset is NOT asserted (Use to deassert reset) */ 160 pcie_deassert_reset = (__force pcie_reset_state_t) 1, 161 162 /* Use #PERST to reset PCI-E device */ 163 pcie_warm_reset = (__force pcie_reset_state_t) 2, 164 165 /* Use PCI-E Hot Reset to reset device */ 166 pcie_hot_reset = (__force pcie_reset_state_t) 3 167 }; 168 169 typedef unsigned short __bitwise pci_dev_flags_t; 170 enum pci_dev_flags { 171 /* INTX_DISABLE in PCI_COMMAND register disables MSI 172 * generation too. 173 */ 174 PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG = (__force pci_dev_flags_t) 1, 175 /* Device configuration is irrevocably lost if disabled into D3 */ 176 PCI_DEV_FLAGS_NO_D3 = (__force pci_dev_flags_t) 2, 177 }; 178 179 enum pci_irq_reroute_variant { 180 INTEL_IRQ_REROUTE_VARIANT = 1, 181 MAX_IRQ_REROUTE_VARIANTS = 3 182 }; 183 184 typedef unsigned short __bitwise pci_bus_flags_t; 185 enum pci_bus_flags { 186 PCI_BUS_FLAGS_NO_MSI = (__force pci_bus_flags_t) 1, 187 PCI_BUS_FLAGS_NO_MMRBC = (__force pci_bus_flags_t) 2, 188 }; 189 190 struct pci_cap_saved_state { 191 struct hlist_node next; 192 char cap_nr; 193 u32 data[0]; 194 }; 195 196 struct pcie_link_state; 197 struct pci_vpd; 198 struct pci_sriov; 199 struct pci_ats; 200 201 /* 202 * The pci_dev structure is used to describe PCI devices. 203 */ 204 struct pci_dev { 205 struct list_head bus_list; /* node in per-bus list */ 206 struct pci_bus *bus; /* bus this device is on */ 207 struct pci_bus *subordinate; /* bus this device bridges to */ 208 209 void *sysdata; /* hook for sys-specific extension */ 210 struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ 211 struct pci_slot *slot; /* Physical slot this device is in */ 212 213 unsigned int devfn; /* encoded device & function index */ 214 unsigned short vendor; 215 unsigned short device; 216 unsigned short subsystem_vendor; 217 unsigned short subsystem_device; 218 unsigned int class; /* 3 bytes: (base,sub,prog-if) */ 219 u8 revision; /* PCI revision, low byte of class word */ 220 u8 hdr_type; /* PCI header type (`multi' flag masked out) */ 221 u8 pcie_type; /* PCI-E device/port type */ 222 u8 rom_base_reg; /* which config register controls the ROM */ 223 u8 pin; /* which interrupt pin this device uses */ 224 225 struct pci_driver *driver; /* which driver has allocated this device */ 226 u64 dma_mask; /* Mask of the bits of bus address this 227 device implements. Normally this is 228 0xffffffff. You only need to change 229 this if your device has broken DMA 230 or supports 64-bit transfers. */ 231 232 struct device_dma_parameters dma_parms; 233 234 pci_power_t current_state; /* Current operating state. In ACPI-speak, 235 this is D0-D3, D0 being fully functional, 236 and D3 being off. */ 237 int pm_cap; /* PM capability offset in the 238 configuration space */ 239 unsigned int pme_support:5; /* Bitmask of states from which PME# 240 can be generated */ 241 unsigned int d1_support:1; /* Low power state D1 is supported */ 242 unsigned int d2_support:1; /* Low power state D2 is supported */ 243 unsigned int no_d1d2:1; /* Only allow D0 and D3 */ 244 245 #ifdef CONFIG_PCIEASPM 246 struct pcie_link_state *link_state; /* ASPM link state. */ 247 #endif 248 249 pci_channel_state_t error_state; /* current connectivity state */ 250 struct device dev; /* Generic device interface */ 251 252 int cfg_size; /* Size of configuration space */ 253 254 /* 255 * Instead of touching interrupt line and base address registers 256 * directly, use the values stored here. They might be different! 257 */ 258 unsigned int irq; 259 struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ 260 261 /* These fields are used by common fixups */ 262 unsigned int transparent:1; /* Transparent PCI bridge */ 263 unsigned int multifunction:1;/* Part of multi-function device */ 264 /* keep track of device state */ 265 unsigned int is_added:1; 266 unsigned int is_busmaster:1; /* device is busmaster */ 267 unsigned int no_msi:1; /* device may not use msi */ 268 unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ 269 unsigned int broken_parity_status:1; /* Device generates false positive parity */ 270 unsigned int irq_reroute_variant:2; /* device needs IRQ rerouting variant */ 271 unsigned int msi_enabled:1; 272 unsigned int msix_enabled:1; 273 unsigned int ari_enabled:1; /* ARI forwarding */ 274 unsigned int is_managed:1; 275 unsigned int is_pcie:1; 276 unsigned int state_saved:1; 277 unsigned int is_physfn:1; 278 unsigned int is_virtfn:1; 279 pci_dev_flags_t dev_flags; 280 atomic_t enable_cnt; /* pci_enable_device has been called */ 281 282 u32 saved_config_space[16]; /* config space saved at suspend time */ 283 struct hlist_head saved_cap_space; 284 struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ 285 int rom_attr_enabled; /* has display of the rom attribute been enabled? */ 286 struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ 287 struct bin_attribute *res_attr_wc[DEVICE_COUNT_RESOURCE]; /* sysfs file for WC mapping of resources */ 288 #ifdef CONFIG_PCI_MSI 289 struct list_head msi_list; 290 #endif 291 struct pci_vpd *vpd; 292 #ifdef CONFIG_PCI_IOV 293 union { 294 struct pci_sriov *sriov; /* SR-IOV capability related */ 295 struct pci_dev *physfn; /* the PF this VF is associated with */ 296 }; 297 struct pci_ats *ats; /* Address Translation Service */ 298 #endif 299 }; 300 301 extern struct pci_dev *alloc_pci_dev(void); 302 303 #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) 304 #define to_pci_dev(n) container_of(n, struct pci_dev, dev) 305 #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) 306 307 static inline int pci_channel_offline(struct pci_dev *pdev) 308 { 309 return (pdev->error_state != pci_channel_io_normal); 310 } 311 312 static inline struct pci_cap_saved_state *pci_find_saved_cap( 313 struct pci_dev *pci_dev, char cap) 314 { 315 struct pci_cap_saved_state *tmp; 316 struct hlist_node *pos; 317 318 hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) { 319 if (tmp->cap_nr == cap) 320 return tmp; 321 } 322 return NULL; 323 } 324 325 static inline void pci_add_saved_cap(struct pci_dev *pci_dev, 326 struct pci_cap_saved_state *new_cap) 327 { 328 hlist_add_head(&new_cap->next, &pci_dev->saved_cap_space); 329 } 330 331 #ifndef PCI_BUS_NUM_RESOURCES 332 #define PCI_BUS_NUM_RESOURCES 16 333 #endif 334 335 #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ 336 337 struct pci_bus { 338 struct list_head node; /* node in list of buses */ 339 struct pci_bus *parent; /* parent bus this bridge is on */ 340 struct list_head children; /* list of child buses */ 341 struct list_head devices; /* list of devices on this bus */ 342 struct pci_dev *self; /* bridge device as seen by parent */ 343 struct list_head slots; /* list of slots on this bus */ 344 struct resource *resource[PCI_BUS_NUM_RESOURCES]; 345 /* address space routed to this bus */ 346 347 struct pci_ops *ops; /* configuration access functions */ 348 void *sysdata; /* hook for sys-specific extension */ 349 struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ 350 351 unsigned char number; /* bus number */ 352 unsigned char primary; /* number of primary bridge */ 353 unsigned char secondary; /* number of secondary bridge */ 354 unsigned char subordinate; /* max number of subordinate buses */ 355 356 char name[48]; 357 358 unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ 359 pci_bus_flags_t bus_flags; /* Inherited by child busses */ 360 struct device *bridge; 361 struct device dev; 362 struct bin_attribute *legacy_io; /* legacy I/O for this bus */ 363 struct bin_attribute *legacy_mem; /* legacy mem */ 364 unsigned int is_added:1; 365 }; 366 367 #define pci_bus_b(n) list_entry(n, struct pci_bus, node) 368 #define to_pci_bus(n) container_of(n, struct pci_bus, dev) 369 370 /* 371 * Returns true if the pci bus is root (behind host-pci bridge), 372 * false otherwise 373 */ 374 static inline bool pci_is_root_bus(struct pci_bus *pbus) 375 { 376 return !(pbus->parent); 377 } 378 379 #ifdef CONFIG_PCI_MSI 380 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) 381 { 382 return pci_dev->msi_enabled || pci_dev->msix_enabled; 383 } 384 #else 385 static inline bool pci_dev_msi_enabled(struct pci_dev *pci_dev) { return false; } 386 #endif 387 388 /* 389 * Error values that may be returned by PCI functions. 390 */ 391 #define PCIBIOS_SUCCESSFUL 0x00 392 #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 393 #define PCIBIOS_BAD_VENDOR_ID 0x83 394 #define PCIBIOS_DEVICE_NOT_FOUND 0x86 395 #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 396 #define PCIBIOS_SET_FAILED 0x88 397 #define PCIBIOS_BUFFER_TOO_SMALL 0x89 398 399 /* Low-level architecture-dependent routines */ 400 401 struct pci_ops { 402 int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); 403 int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); 404 }; 405 406 /* 407 * ACPI needs to be able to access PCI config space before we've done a 408 * PCI bus scan and created pci_bus structures. 409 */ 410 extern int raw_pci_read(unsigned int domain, unsigned int bus, 411 unsigned int devfn, int reg, int len, u32 *val); 412 extern int raw_pci_write(unsigned int domain, unsigned int bus, 413 unsigned int devfn, int reg, int len, u32 val); 414 415 struct pci_bus_region { 416 resource_size_t start; 417 resource_size_t end; 418 }; 419 420 struct pci_dynids { 421 spinlock_t lock; /* protects list, index */ 422 struct list_head list; /* for IDs added at runtime */ 423 }; 424 425 /* ---------------------------------------------------------------- */ 426 /** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides 427 * a set of callbacks in struct pci_error_handlers, then that device driver 428 * will be notified of PCI bus errors, and will be driven to recovery 429 * when an error occurs. 430 */ 431 432 typedef unsigned int __bitwise pci_ers_result_t; 433 434 enum pci_ers_result { 435 /* no result/none/not supported in device driver */ 436 PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1, 437 438 /* Device driver can recover without slot reset */ 439 PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2, 440 441 /* Device driver wants slot to be reset. */ 442 PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3, 443 444 /* Device has completely failed, is unrecoverable */ 445 PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4, 446 447 /* Device driver is fully recovered and operational */ 448 PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5, 449 }; 450 451 /* PCI bus error event callbacks */ 452 struct pci_error_handlers { 453 /* PCI bus error detected on this device */ 454 pci_ers_result_t (*error_detected)(struct pci_dev *dev, 455 enum pci_channel_state error); 456 457 /* MMIO has been re-enabled, but not DMA */ 458 pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev); 459 460 /* PCI Express link has been reset */ 461 pci_ers_result_t (*link_reset)(struct pci_dev *dev); 462 463 /* PCI slot has been reset */ 464 pci_ers_result_t (*slot_reset)(struct pci_dev *dev); 465 466 /* Device driver may resume normal operations */ 467 void (*resume)(struct pci_dev *dev); 468 }; 469 470 /* ---------------------------------------------------------------- */ 471 472 struct module; 473 struct pci_driver { 474 struct list_head node; 475 char *name; 476 const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ 477 int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ 478 void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ 479 int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ 480 int (*suspend_late) (struct pci_dev *dev, pm_message_t state); 481 int (*resume_early) (struct pci_dev *dev); 482 int (*resume) (struct pci_dev *dev); /* Device woken up */ 483 void (*shutdown) (struct pci_dev *dev); 484 struct pci_error_handlers *err_handler; 485 struct device_driver driver; 486 struct pci_dynids dynids; 487 }; 488 489 #define to_pci_driver(drv) container_of(drv, struct pci_driver, driver) 490 491 /** 492 * DEFINE_PCI_DEVICE_TABLE - macro used to describe a pci device table 493 * @_table: device table name 494 * 495 * This macro is used to create a struct pci_device_id array (a device table) 496 * in a generic manner. 497 */ 498 #define DEFINE_PCI_DEVICE_TABLE(_table) \ 499 const struct pci_device_id _table[] __devinitconst 500 501 /** 502 * PCI_DEVICE - macro used to describe a specific pci device 503 * @vend: the 16 bit PCI Vendor ID 504 * @dev: the 16 bit PCI Device ID 505 * 506 * This macro is used to create a struct pci_device_id that matches a 507 * specific device. The subvendor and subdevice fields will be set to 508 * PCI_ANY_ID. 509 */ 510 #define PCI_DEVICE(vend,dev) \ 511 .vendor = (vend), .device = (dev), \ 512 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 513 514 /** 515 * PCI_DEVICE_CLASS - macro used to describe a specific pci device class 516 * @dev_class: the class, subclass, prog-if triple for this device 517 * @dev_class_mask: the class mask for this device 518 * 519 * This macro is used to create a struct pci_device_id that matches a 520 * specific PCI class. The vendor, device, subvendor, and subdevice 521 * fields will be set to PCI_ANY_ID. 522 */ 523 #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ 524 .class = (dev_class), .class_mask = (dev_class_mask), \ 525 .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ 526 .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID 527 528 /** 529 * PCI_VDEVICE - macro used to describe a specific pci device in short form 530 * @vendor: the vendor name 531 * @device: the 16 bit PCI Device ID 532 * 533 * This macro is used to create a struct pci_device_id that matches a 534 * specific PCI device. The subvendor, and subdevice fields will be set 535 * to PCI_ANY_ID. The macro allows the next field to follow as the device 536 * private data. 537 */ 538 539 #define PCI_VDEVICE(vendor, device) \ 540 PCI_VENDOR_ID_##vendor, (device), \ 541 PCI_ANY_ID, PCI_ANY_ID, 0, 0 542 543 /* these external functions are only available when PCI support is enabled */ 544 #ifdef CONFIG_PCI 545 546 extern struct bus_type pci_bus_type; 547 548 /* Do NOT directly access these two variables, unless you are arch specific pci 549 * code, or pci core code. */ 550 extern struct list_head pci_root_buses; /* list of all known PCI buses */ 551 /* Some device drivers need know if pci is initiated */ 552 extern int no_pci_devices(void); 553 554 void pcibios_fixup_bus(struct pci_bus *); 555 int __must_check pcibios_enable_device(struct pci_dev *, int mask); 556 char *pcibios_setup(char *str); 557 558 /* Used only when drivers/pci/setup.c is used */ 559 void pcibios_align_resource(void *, struct resource *, resource_size_t, 560 resource_size_t); 561 void pcibios_update_irq(struct pci_dev *, int irq); 562 563 /* Generic PCI functions used internally */ 564 565 extern struct pci_bus *pci_find_bus(int domain, int busnr); 566 void pci_bus_add_devices(const struct pci_bus *bus); 567 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, 568 struct pci_ops *ops, void *sysdata); 569 static inline struct pci_bus * __devinit pci_scan_bus(int bus, struct pci_ops *ops, 570 void *sysdata) 571 { 572 struct pci_bus *root_bus; 573 root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); 574 if (root_bus) 575 pci_bus_add_devices(root_bus); 576 return root_bus; 577 } 578 struct pci_bus *pci_create_bus(struct device *parent, int bus, 579 struct pci_ops *ops, void *sysdata); 580 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, 581 int busnr); 582 struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr, 583 const char *name, 584 struct hotplug_slot *hotplug); 585 void pci_destroy_slot(struct pci_slot *slot); 586 void pci_renumber_slot(struct pci_slot *slot, int slot_nr); 587 int pci_scan_slot(struct pci_bus *bus, int devfn); 588 struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn); 589 void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); 590 unsigned int pci_scan_child_bus(struct pci_bus *bus); 591 int __must_check pci_bus_add_device(struct pci_dev *dev); 592 void pci_read_bridge_bases(struct pci_bus *child); 593 struct resource *pci_find_parent_resource(const struct pci_dev *dev, 594 struct resource *res); 595 u8 pci_swizzle_interrupt_pin(struct pci_dev *dev, u8 pin); 596 int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); 597 u8 pci_common_swizzle(struct pci_dev *dev, u8 *pinp); 598 extern struct pci_dev *pci_dev_get(struct pci_dev *dev); 599 extern void pci_dev_put(struct pci_dev *dev); 600 extern void pci_remove_bus(struct pci_bus *b); 601 extern void pci_remove_bus_device(struct pci_dev *dev); 602 extern void pci_stop_bus_device(struct pci_dev *dev); 603 void pci_setup_cardbus(struct pci_bus *bus); 604 extern void pci_sort_breadthfirst(void); 605 606 /* Generic PCI functions exported to card drivers */ 607 608 #ifdef CONFIG_PCI_LEGACY 609 struct pci_dev __deprecated *pci_find_device(unsigned int vendor, 610 unsigned int device, 611 struct pci_dev *from); 612 #endif /* CONFIG_PCI_LEGACY */ 613 614 enum pci_lost_interrupt_reason { 615 PCI_LOST_IRQ_NO_INFORMATION = 0, 616 PCI_LOST_IRQ_DISABLE_MSI, 617 PCI_LOST_IRQ_DISABLE_MSIX, 618 PCI_LOST_IRQ_DISABLE_ACPI, 619 }; 620 enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev); 621 int pci_find_capability(struct pci_dev *dev, int cap); 622 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap); 623 int pci_find_ext_capability(struct pci_dev *dev, int cap); 624 int pci_find_ht_capability(struct pci_dev *dev, int ht_cap); 625 int pci_find_next_ht_capability(struct pci_dev *dev, int pos, int ht_cap); 626 struct pci_bus *pci_find_next_bus(const struct pci_bus *from); 627 628 struct pci_dev *pci_get_device(unsigned int vendor, unsigned int device, 629 struct pci_dev *from); 630 struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, 631 unsigned int ss_vendor, unsigned int ss_device, 632 struct pci_dev *from); 633 struct pci_dev *pci_get_slot(struct pci_bus *bus, unsigned int devfn); 634 struct pci_dev *pci_get_bus_and_slot(unsigned int bus, unsigned int devfn); 635 struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from); 636 int pci_dev_present(const struct pci_device_id *ids); 637 638 int pci_bus_read_config_byte(struct pci_bus *bus, unsigned int devfn, 639 int where, u8 *val); 640 int pci_bus_read_config_word(struct pci_bus *bus, unsigned int devfn, 641 int where, u16 *val); 642 int pci_bus_read_config_dword(struct pci_bus *bus, unsigned int devfn, 643 int where, u32 *val); 644 int pci_bus_write_config_byte(struct pci_bus *bus, unsigned int devfn, 645 int where, u8 val); 646 int pci_bus_write_config_word(struct pci_bus *bus, unsigned int devfn, 647 int where, u16 val); 648 int pci_bus_write_config_dword(struct pci_bus *bus, unsigned int devfn, 649 int where, u32 val); 650 struct pci_ops *pci_bus_set_ops(struct pci_bus *bus, struct pci_ops *ops); 651 652 static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) 653 { 654 return pci_bus_read_config_byte(dev->bus, dev->devfn, where, val); 655 } 656 static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) 657 { 658 return pci_bus_read_config_word(dev->bus, dev->devfn, where, val); 659 } 660 static inline int pci_read_config_dword(struct pci_dev *dev, int where, 661 u32 *val) 662 { 663 return pci_bus_read_config_dword(dev->bus, dev->devfn, where, val); 664 } 665 static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) 666 { 667 return pci_bus_write_config_byte(dev->bus, dev->devfn, where, val); 668 } 669 static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) 670 { 671 return pci_bus_write_config_word(dev->bus, dev->devfn, where, val); 672 } 673 static inline int pci_write_config_dword(struct pci_dev *dev, int where, 674 u32 val) 675 { 676 return pci_bus_write_config_dword(dev->bus, dev->devfn, where, val); 677 } 678 679 int __must_check pci_enable_device(struct pci_dev *dev); 680 int __must_check pci_enable_device_io(struct pci_dev *dev); 681 int __must_check pci_enable_device_mem(struct pci_dev *dev); 682 int __must_check pci_reenable_device(struct pci_dev *); 683 int __must_check pcim_enable_device(struct pci_dev *pdev); 684 void pcim_pin_device(struct pci_dev *pdev); 685 686 static inline int pci_is_enabled(struct pci_dev *pdev) 687 { 688 return (atomic_read(&pdev->enable_cnt) > 0); 689 } 690 691 static inline int pci_is_managed(struct pci_dev *pdev) 692 { 693 return pdev->is_managed; 694 } 695 696 void pci_disable_device(struct pci_dev *dev); 697 void pci_set_master(struct pci_dev *dev); 698 void pci_clear_master(struct pci_dev *dev); 699 int pci_set_pcie_reset_state(struct pci_dev *dev, enum pcie_reset_state state); 700 #define HAVE_PCI_SET_MWI 701 int __must_check pci_set_mwi(struct pci_dev *dev); 702 int pci_try_set_mwi(struct pci_dev *dev); 703 void pci_clear_mwi(struct pci_dev *dev); 704 void pci_intx(struct pci_dev *dev, int enable); 705 void pci_msi_off(struct pci_dev *dev); 706 int pci_set_dma_mask(struct pci_dev *dev, u64 mask); 707 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); 708 int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size); 709 int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask); 710 int pcix_get_max_mmrbc(struct pci_dev *dev); 711 int pcix_get_mmrbc(struct pci_dev *dev); 712 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc); 713 int pcie_get_readrq(struct pci_dev *dev); 714 int pcie_set_readrq(struct pci_dev *dev, int rq); 715 int __pci_reset_function(struct pci_dev *dev); 716 int pci_reset_function(struct pci_dev *dev); 717 void pci_update_resource(struct pci_dev *dev, int resno); 718 int __must_check pci_assign_resource(struct pci_dev *dev, int i); 719 int pci_select_bars(struct pci_dev *dev, unsigned long flags); 720 721 /* ROM control related routines */ 722 int pci_enable_rom(struct pci_dev *pdev); 723 void pci_disable_rom(struct pci_dev *pdev); 724 void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); 725 void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); 726 size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size); 727 728 /* Power management related routines */ 729 int pci_save_state(struct pci_dev *dev); 730 int pci_restore_state(struct pci_dev *dev); 731 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state); 732 int pci_set_power_state(struct pci_dev *dev, pci_power_t state); 733 pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); 734 bool pci_pme_capable(struct pci_dev *dev, pci_power_t state); 735 void pci_pme_active(struct pci_dev *dev, bool enable); 736 int pci_enable_wake(struct pci_dev *dev, pci_power_t state, bool enable); 737 int pci_wake_from_d3(struct pci_dev *dev, bool enable); 738 pci_power_t pci_target_state(struct pci_dev *dev); 739 int pci_prepare_to_sleep(struct pci_dev *dev); 740 int pci_back_from_sleep(struct pci_dev *dev); 741 742 /* Functions for PCI Hotplug drivers to use */ 743 int pci_bus_find_capability(struct pci_bus *bus, unsigned int devfn, int cap); 744 #ifdef CONFIG_HOTPLUG 745 unsigned int pci_rescan_bus(struct pci_bus *bus); 746 #endif 747 748 /* Vital product data routines */ 749 ssize_t pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); 750 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); 751 int pci_vpd_truncate(struct pci_dev *dev, size_t size); 752 753 /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ 754 void pci_bus_assign_resources(const struct pci_bus *bus); 755 void pci_bus_size_bridges(struct pci_bus *bus); 756 int pci_claim_resource(struct pci_dev *, int); 757 void pci_assign_unassigned_resources(void); 758 void pdev_enable_device(struct pci_dev *); 759 void pdev_sort_resources(struct pci_dev *, struct resource_list *); 760 int pci_enable_resources(struct pci_dev *, int mask); 761 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), 762 int (*)(struct pci_dev *, u8, u8)); 763 #define HAVE_PCI_REQ_REGIONS 2 764 int __must_check pci_request_regions(struct pci_dev *, const char *); 765 int __must_check pci_request_regions_exclusive(struct pci_dev *, const char *); 766 void pci_release_regions(struct pci_dev *); 767 int __must_check pci_request_region(struct pci_dev *, int, const char *); 768 int __must_check pci_request_region_exclusive(struct pci_dev *, int, const char *); 769 void pci_release_region(struct pci_dev *, int); 770 int pci_request_selected_regions(struct pci_dev *, int, const char *); 771 int pci_request_selected_regions_exclusive(struct pci_dev *, int, const char *); 772 void pci_release_selected_regions(struct pci_dev *, int); 773 774 /* drivers/pci/bus.c */ 775 int __must_check pci_bus_alloc_resource(struct pci_bus *bus, 776 struct resource *res, resource_size_t size, 777 resource_size_t align, resource_size_t min, 778 unsigned int type_mask, 779 void (*alignf)(void *, struct resource *, 780 resource_size_t, resource_size_t), 781 void *alignf_data); 782 void pci_enable_bridges(struct pci_bus *bus); 783 784 /* Proper probing supporting hot-pluggable devices */ 785 int __must_check __pci_register_driver(struct pci_driver *, struct module *, 786 const char *mod_name); 787 788 /* 789 * pci_register_driver must be a macro so that KBUILD_MODNAME can be expanded 790 */ 791 #define pci_register_driver(driver) \ 792 __pci_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) 793 794 void pci_unregister_driver(struct pci_driver *dev); 795 void pci_remove_behind_bridge(struct pci_dev *dev); 796 struct pci_driver *pci_dev_driver(const struct pci_dev *dev); 797 const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, 798 struct pci_dev *dev); 799 int pci_scan_bridge(struct pci_bus *bus, struct pci_dev *dev, int max, 800 int pass); 801 802 void pci_walk_bus(struct pci_bus *top, int (*cb)(struct pci_dev *, void *), 803 void *userdata); 804 int pci_cfg_space_size_ext(struct pci_dev *dev); 805 int pci_cfg_space_size(struct pci_dev *dev); 806 unsigned char pci_bus_max_busnr(struct pci_bus *bus); 807 808 /* kmem_cache style wrapper around pci_alloc_consistent() */ 809 810 #include <linux/dmapool.h> 811 812 #define pci_pool dma_pool 813 #define pci_pool_create(name, pdev, size, align, allocation) \ 814 dma_pool_create(name, &pdev->dev, size, align, allocation) 815 #define pci_pool_destroy(pool) dma_pool_destroy(pool) 816 #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) 817 #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) 818 819 enum pci_dma_burst_strategy { 820 PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, 821 strategy_parameter is N/A */ 822 PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter 823 byte boundaries */ 824 PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of 825 strategy_parameter byte boundaries */ 826 }; 827 828 struct msix_entry { 829 u32 vector; /* kernel uses to write allocated vector */ 830 u16 entry; /* driver uses to specify entry, OS writes */ 831 }; 832 833 834 #ifndef CONFIG_PCI_MSI 835 static inline int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec) 836 { 837 return -1; 838 } 839 840 static inline void pci_msi_shutdown(struct pci_dev *dev) 841 { } 842 static inline void pci_disable_msi(struct pci_dev *dev) 843 { } 844 845 static inline int pci_msix_table_size(struct pci_dev *dev) 846 { 847 return 0; 848 } 849 static inline int pci_enable_msix(struct pci_dev *dev, 850 struct msix_entry *entries, int nvec) 851 { 852 return -1; 853 } 854 855 static inline void pci_msix_shutdown(struct pci_dev *dev) 856 { } 857 static inline void pci_disable_msix(struct pci_dev *dev) 858 { } 859 860 static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) 861 { } 862 863 static inline void pci_restore_msi_state(struct pci_dev *dev) 864 { } 865 static inline int pci_msi_enabled(void) 866 { 867 return 0; 868 } 869 #else 870 extern int pci_enable_msi_block(struct pci_dev *dev, unsigned int nvec); 871 extern void pci_msi_shutdown(struct pci_dev *dev); 872 extern void pci_disable_msi(struct pci_dev *dev); 873 extern int pci_msix_table_size(struct pci_dev *dev); 874 extern int pci_enable_msix(struct pci_dev *dev, 875 struct msix_entry *entries, int nvec); 876 extern void pci_msix_shutdown(struct pci_dev *dev); 877 extern void pci_disable_msix(struct pci_dev *dev); 878 extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); 879 extern void pci_restore_msi_state(struct pci_dev *dev); 880 extern int pci_msi_enabled(void); 881 #endif 882 883 #ifndef CONFIG_PCIEASPM 884 static inline int pcie_aspm_enabled(void) 885 { 886 return 0; 887 } 888 #else 889 extern int pcie_aspm_enabled(void); 890 #endif 891 892 #ifndef CONFIG_PCIE_ECRC 893 static inline void pcie_set_ecrc_checking(struct pci_dev *dev) 894 { 895 return; 896 } 897 static inline void pcie_ecrc_get_policy(char *str) {}; 898 #else 899 extern void pcie_set_ecrc_checking(struct pci_dev *dev); 900 extern void pcie_ecrc_get_policy(char *str); 901 #endif 902 903 #define pci_enable_msi(pdev) pci_enable_msi_block(pdev, 1) 904 905 #ifdef CONFIG_HT_IRQ 906 /* The functions a driver should call */ 907 int ht_create_irq(struct pci_dev *dev, int idx); 908 void ht_destroy_irq(unsigned int irq); 909 #endif /* CONFIG_HT_IRQ */ 910 911 extern void pci_block_user_cfg_access(struct pci_dev *dev); 912 extern void pci_unblock_user_cfg_access(struct pci_dev *dev); 913 914 /* 915 * PCI domain support. Sometimes called PCI segment (eg by ACPI), 916 * a PCI domain is defined to be a set of PCI busses which share 917 * configuration space. 918 */ 919 #ifdef CONFIG_PCI_DOMAINS 920 extern int pci_domains_supported; 921 #else 922 enum { pci_domains_supported = 0 }; 923 static inline int pci_domain_nr(struct pci_bus *bus) 924 { 925 return 0; 926 } 927 928 static inline int pci_proc_domain(struct pci_bus *bus) 929 { 930 return 0; 931 } 932 #endif /* CONFIG_PCI_DOMAINS */ 933 934 #else /* CONFIG_PCI is not enabled */ 935 936 /* 937 * If the system does not have PCI, clearly these return errors. Define 938 * these as simple inline functions to avoid hair in drivers. 939 */ 940 941 #define _PCI_NOP(o, s, t) \ 942 static inline int pci_##o##_config_##s(struct pci_dev *dev, \ 943 int where, t val) \ 944 { return PCIBIOS_FUNC_NOT_SUPPORTED; } 945 946 #define _PCI_NOP_ALL(o, x) _PCI_NOP(o, byte, u8 x) \ 947 _PCI_NOP(o, word, u16 x) \ 948 _PCI_NOP(o, dword, u32 x) 949 _PCI_NOP_ALL(read, *) 950 _PCI_NOP_ALL(write,) 951 952 static inline struct pci_dev *pci_find_device(unsigned int vendor, 953 unsigned int device, 954 struct pci_dev *from) 955 { 956 return NULL; 957 } 958 959 static inline struct pci_dev *pci_get_device(unsigned int vendor, 960 unsigned int device, 961 struct pci_dev *from) 962 { 963 return NULL; 964 } 965 966 static inline struct pci_dev *pci_get_subsys(unsigned int vendor, 967 unsigned int device, 968 unsigned int ss_vendor, 969 unsigned int ss_device, 970 struct pci_dev *from) 971 { 972 return NULL; 973 } 974 975 static inline struct pci_dev *pci_get_class(unsigned int class, 976 struct pci_dev *from) 977 { 978 return NULL; 979 } 980 981 #define pci_dev_present(ids) (0) 982 #define no_pci_devices() (1) 983 #define pci_dev_put(dev) do { } while (0) 984 985 static inline void pci_set_master(struct pci_dev *dev) 986 { } 987 988 static inline int pci_enable_device(struct pci_dev *dev) 989 { 990 return -EIO; 991 } 992 993 static inline void pci_disable_device(struct pci_dev *dev) 994 { } 995 996 static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) 997 { 998 return -EIO; 999 } 1000 1001 static inline int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask) 1002 { 1003 return -EIO; 1004 } 1005 1006 static inline int pci_set_dma_max_seg_size(struct pci_dev *dev, 1007 unsigned int size) 1008 { 1009 return -EIO; 1010 } 1011 1012 static inline int pci_set_dma_seg_boundary(struct pci_dev *dev, 1013 unsigned long mask) 1014 { 1015 return -EIO; 1016 } 1017 1018 static inline int pci_assign_resource(struct pci_dev *dev, int i) 1019 { 1020 return -EBUSY; 1021 } 1022 1023 static inline int __pci_register_driver(struct pci_driver *drv, 1024 struct module *owner) 1025 { 1026 return 0; 1027 } 1028 1029 static inline int pci_register_driver(struct pci_driver *drv) 1030 { 1031 return 0; 1032 } 1033 1034 static inline void pci_unregister_driver(struct pci_driver *drv) 1035 { } 1036 1037 static inline int pci_find_capability(struct pci_dev *dev, int cap) 1038 { 1039 return 0; 1040 } 1041 1042 static inline int pci_find_next_capability(struct pci_dev *dev, u8 post, 1043 int cap) 1044 { 1045 return 0; 1046 } 1047 1048 static inline int pci_find_ext_capability(struct pci_dev *dev, int cap) 1049 { 1050 return 0; 1051 } 1052 1053 /* Power management related routines */ 1054 static inline int pci_save_state(struct pci_dev *dev) 1055 { 1056 return 0; 1057 } 1058 1059 static inline int pci_restore_state(struct pci_dev *dev) 1060 { 1061 return 0; 1062 } 1063 1064 static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) 1065 { 1066 return 0; 1067 } 1068 1069 static inline pci_power_t pci_choose_state(struct pci_dev *dev, 1070 pm_message_t state) 1071 { 1072 return PCI_D0; 1073 } 1074 1075 static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, 1076 int enable) 1077 { 1078 return 0; 1079 } 1080 1081 static inline int pci_request_regions(struct pci_dev *dev, const char *res_name) 1082 { 1083 return -EIO; 1084 } 1085 1086 static inline void pci_release_regions(struct pci_dev *dev) 1087 { } 1088 1089 #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) 1090 1091 static inline void pci_block_user_cfg_access(struct pci_dev *dev) 1092 { } 1093 1094 static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) 1095 { } 1096 1097 static inline struct pci_bus *pci_find_next_bus(const struct pci_bus *from) 1098 { return NULL; } 1099 1100 static inline struct pci_dev *pci_get_slot(struct pci_bus *bus, 1101 unsigned int devfn) 1102 { return NULL; } 1103 1104 static inline struct pci_dev *pci_get_bus_and_slot(unsigned int bus, 1105 unsigned int devfn) 1106 { return NULL; } 1107 1108 #endif /* CONFIG_PCI */ 1109 1110 /* Include architecture-dependent settings and functions */ 1111 1112 #include <asm/pci.h> 1113 1114 #ifndef PCIBIOS_MAX_MEM_32 1115 #define PCIBIOS_MAX_MEM_32 (-1) 1116 #endif 1117 1118 /* these helpers provide future and backwards compatibility 1119 * for accessing popular PCI BAR info */ 1120 #define pci_resource_start(dev, bar) ((dev)->resource[(bar)].start) 1121 #define pci_resource_end(dev, bar) ((dev)->resource[(bar)].end) 1122 #define pci_resource_flags(dev, bar) ((dev)->resource[(bar)].flags) 1123 #define pci_resource_len(dev,bar) \ 1124 ((pci_resource_start((dev), (bar)) == 0 && \ 1125 pci_resource_end((dev), (bar)) == \ 1126 pci_resource_start((dev), (bar))) ? 0 : \ 1127 \ 1128 (pci_resource_end((dev), (bar)) - \ 1129 pci_resource_start((dev), (bar)) + 1)) 1130 1131 /* Similar to the helpers above, these manipulate per-pci_dev 1132 * driver-specific data. They are really just a wrapper around 1133 * the generic device structure functions of these calls. 1134 */ 1135 static inline void *pci_get_drvdata(struct pci_dev *pdev) 1136 { 1137 return dev_get_drvdata(&pdev->dev); 1138 } 1139 1140 static inline void pci_set_drvdata(struct pci_dev *pdev, void *data) 1141 { 1142 dev_set_drvdata(&pdev->dev, data); 1143 } 1144 1145 /* If you want to know what to call your pci_dev, ask this function. 1146 * Again, it's a wrapper around the generic device. 1147 */ 1148 static inline const char *pci_name(const struct pci_dev *pdev) 1149 { 1150 return dev_name(&pdev->dev); 1151 } 1152 1153 1154 /* Some archs don't want to expose struct resource to userland as-is 1155 * in sysfs and /proc 1156 */ 1157 #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER 1158 static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, 1159 const struct resource *rsrc, resource_size_t *start, 1160 resource_size_t *end) 1161 { 1162 *start = rsrc->start; 1163 *end = rsrc->end; 1164 } 1165 #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ 1166 1167 1168 /* 1169 * The world is not perfect and supplies us with broken PCI devices. 1170 * For at least a part of these bugs we need a work-around, so both 1171 * generic (drivers/pci/quirks.c) and per-architecture code can define 1172 * fixup hooks to be called for particular buggy devices. 1173 */ 1174 1175 struct pci_fixup { 1176 u16 vendor, device; /* You can use PCI_ANY_ID here of course */ 1177 void (*hook)(struct pci_dev *dev); 1178 }; 1179 1180 enum pci_fixup_pass { 1181 pci_fixup_early, /* Before probing BARs */ 1182 pci_fixup_header, /* After reading configuration header */ 1183 pci_fixup_final, /* Final phase of device fixups */ 1184 pci_fixup_enable, /* pci_enable_device() time */ 1185 pci_fixup_resume, /* pci_device_resume() */ 1186 pci_fixup_suspend, /* pci_device_suspend */ 1187 pci_fixup_resume_early, /* pci_device_resume_early() */ 1188 }; 1189 1190 /* Anonymous variables would be nice... */ 1191 #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ 1192 static const struct pci_fixup __pci_fixup_##name __used \ 1193 __attribute__((__section__(#section))) = { vendor, device, hook }; 1194 #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ 1195 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ 1196 vendor##device##hook, vendor, device, hook) 1197 #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ 1198 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ 1199 vendor##device##hook, vendor, device, hook) 1200 #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ 1201 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ 1202 vendor##device##hook, vendor, device, hook) 1203 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ 1204 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ 1205 vendor##device##hook, vendor, device, hook) 1206 #define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook) \ 1207 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume, \ 1208 resume##vendor##device##hook, vendor, device, hook) 1209 #define DECLARE_PCI_FIXUP_RESUME_EARLY(vendor, device, hook) \ 1210 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume_early, \ 1211 resume_early##vendor##device##hook, vendor, device, hook) 1212 #define DECLARE_PCI_FIXUP_SUSPEND(vendor, device, hook) \ 1213 DECLARE_PCI_FIXUP_SECTION(.pci_fixup_suspend, \ 1214 suspend##vendor##device##hook, vendor, device, hook) 1215 1216 1217 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); 1218 1219 void __iomem *pcim_iomap(struct pci_dev *pdev, int bar, unsigned long maxlen); 1220 void pcim_iounmap(struct pci_dev *pdev, void __iomem *addr); 1221 void __iomem * const *pcim_iomap_table(struct pci_dev *pdev); 1222 int pcim_iomap_regions(struct pci_dev *pdev, u16 mask, const char *name); 1223 int pcim_iomap_regions_request_all(struct pci_dev *pdev, u16 mask, 1224 const char *name); 1225 void pcim_iounmap_regions(struct pci_dev *pdev, u16 mask); 1226 1227 extern int pci_pci_problems; 1228 #define PCIPCI_FAIL 1 /* No PCI PCI DMA */ 1229 #define PCIPCI_TRITON 2 1230 #define PCIPCI_NATOMA 4 1231 #define PCIPCI_VIAETBF 8 1232 #define PCIPCI_VSFX 16 1233 #define PCIPCI_ALIMAGIK 32 /* Need low latency setting */ 1234 #define PCIAGP_FAIL 64 /* No PCI to AGP DMA */ 1235 1236 extern unsigned long pci_cardbus_io_size; 1237 extern unsigned long pci_cardbus_mem_size; 1238 1239 int pcibios_add_platform_entries(struct pci_dev *dev); 1240 void pcibios_disable_device(struct pci_dev *dev); 1241 int pcibios_set_pcie_reset_state(struct pci_dev *dev, 1242 enum pcie_reset_state state); 1243 1244 #ifdef CONFIG_PCI_MMCONFIG 1245 extern void __init pci_mmcfg_early_init(void); 1246 extern void __init pci_mmcfg_late_init(void); 1247 #else 1248 static inline void pci_mmcfg_early_init(void) { } 1249 static inline void pci_mmcfg_late_init(void) { } 1250 #endif 1251 1252 int pci_ext_cfg_avail(struct pci_dev *dev); 1253 1254 void __iomem *pci_ioremap_bar(struct pci_dev *pdev, int bar); 1255 1256 #ifdef CONFIG_PCI_IOV 1257 extern int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); 1258 extern void pci_disable_sriov(struct pci_dev *dev); 1259 extern irqreturn_t pci_sriov_migration(struct pci_dev *dev); 1260 #else 1261 static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) 1262 { 1263 return -ENODEV; 1264 } 1265 static inline void pci_disable_sriov(struct pci_dev *dev) 1266 { 1267 } 1268 static inline irqreturn_t pci_sriov_migration(struct pci_dev *dev) 1269 { 1270 return IRQ_NONE; 1271 } 1272 #endif 1273 1274 #if defined(CONFIG_HOTPLUG_PCI) || defined(CONFIG_HOTPLUG_PCI_MODULE) 1275 extern void pci_hp_create_module_link(struct pci_slot *pci_slot); 1276 extern void pci_hp_remove_module_link(struct pci_slot *pci_slot); 1277 #endif 1278 1279 #endif /* __KERNEL__ */ 1280 #endif /* LINUX_PCI_H */ 1281