Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * pci.h |
| 3 | * |
| 4 | * PCI defines and function prototypes |
| 5 | * Copyright 1994, Drew Eckhardt |
| 6 | * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
| 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/mod_devicetable.h> |
| 21 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 22 | /* Include the pci register defines */ |
| 23 | #include <linux/pci_regs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | /* Include the ID list */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/pci_ids.h> |
| 27 | |
| 28 | /* |
| 29 | * The PCI interface treats multi-function devices as independent |
| 30 | * devices. The slot/function address of each device is encoded |
| 31 | * in a single byte as follows: |
| 32 | * |
| 33 | * 7:3 = slot |
| 34 | * 2:0 = function |
| 35 | */ |
| 36 | #define PCI_DEVFN(slot,func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
| 37 | #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
| 38 | #define PCI_FUNC(devfn) ((devfn) & 0x07) |
| 39 | |
| 40 | /* Ioctls for /proc/bus/pci/X/Y nodes. */ |
| 41 | #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) |
| 42 | #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ |
| 43 | #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ |
| 44 | #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ |
| 45 | #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ |
| 46 | |
| 47 | #ifdef __KERNEL__ |
| 48 | |
| 49 | #include <linux/types.h> |
| 50 | #include <linux/config.h> |
| 51 | #include <linux/ioport.h> |
| 52 | #include <linux/list.h> |
| 53 | #include <linux/errno.h> |
| 54 | #include <linux/device.h> |
| 55 | |
| 56 | /* File state for mmap()s on /proc/bus/pci/X/Y */ |
| 57 | enum pci_mmap_state { |
| 58 | pci_mmap_io, |
| 59 | pci_mmap_mem |
| 60 | }; |
| 61 | |
| 62 | /* This defines the direction arg to the DMA mapping routines. */ |
| 63 | #define PCI_DMA_BIDIRECTIONAL 0 |
| 64 | #define PCI_DMA_TODEVICE 1 |
| 65 | #define PCI_DMA_FROMDEVICE 2 |
| 66 | #define PCI_DMA_NONE 3 |
| 67 | |
| 68 | #define DEVICE_COUNT_COMPATIBLE 4 |
| 69 | #define DEVICE_COUNT_RESOURCE 12 |
| 70 | |
| 71 | typedef int __bitwise pci_power_t; |
| 72 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 73 | #define PCI_D0 ((pci_power_t __force) 0) |
| 74 | #define PCI_D1 ((pci_power_t __force) 1) |
| 75 | #define PCI_D2 ((pci_power_t __force) 2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #define PCI_D3hot ((pci_power_t __force) 3) |
| 77 | #define PCI_D3cold ((pci_power_t __force) 4) |
Daniel Ritz | 3fe9d19 | 2005-08-17 15:32:19 -0700 | [diff] [blame] | 78 | #define PCI_UNKNOWN ((pci_power_t __force) 5) |
Pavel Machek | 438510f | 2005-04-16 15:25:24 -0700 | [diff] [blame] | 79 | #define PCI_POWER_ERROR ((pci_power_t __force) -1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
| 81 | /* |
| 82 | * The pci_dev structure is used to describe PCI devices. |
| 83 | */ |
| 84 | struct pci_dev { |
| 85 | struct list_head global_list; /* node in list of all PCI devices */ |
| 86 | struct list_head bus_list; /* node in per-bus list */ |
| 87 | struct pci_bus *bus; /* bus this device is on */ |
| 88 | struct pci_bus *subordinate; /* bus this device bridges to */ |
| 89 | |
| 90 | void *sysdata; /* hook for sys-specific extension */ |
| 91 | struct proc_dir_entry *procent; /* device entry in /proc/bus/pci */ |
| 92 | |
| 93 | unsigned int devfn; /* encoded device & function index */ |
| 94 | unsigned short vendor; |
| 95 | unsigned short device; |
| 96 | unsigned short subsystem_vendor; |
| 97 | unsigned short subsystem_device; |
| 98 | unsigned int class; /* 3 bytes: (base,sub,prog-if) */ |
| 99 | u8 hdr_type; /* PCI header type (`multi' flag masked out) */ |
| 100 | u8 rom_base_reg; /* which config register controls the ROM */ |
| 101 | |
| 102 | struct pci_driver *driver; /* which driver has allocated this device */ |
| 103 | u64 dma_mask; /* Mask of the bits of bus address this |
| 104 | device implements. Normally this is |
| 105 | 0xffffffff. You only need to change |
| 106 | this if your device has broken DMA |
| 107 | or supports 64-bit transfers. */ |
| 108 | |
| 109 | pci_power_t current_state; /* Current operating state. In ACPI-speak, |
| 110 | this is D0-D3, D0 being fully functional, |
| 111 | and D3 being off. */ |
| 112 | |
| 113 | struct device dev; /* Generic device interface */ |
| 114 | |
| 115 | /* device is compatible with these IDs */ |
| 116 | unsigned short vendor_compatible[DEVICE_COUNT_COMPATIBLE]; |
| 117 | unsigned short device_compatible[DEVICE_COUNT_COMPATIBLE]; |
| 118 | |
| 119 | int cfg_size; /* Size of configuration space */ |
| 120 | |
| 121 | /* |
| 122 | * Instead of touching interrupt line and base address registers |
| 123 | * directly, use the values stored here. They might be different! |
| 124 | */ |
| 125 | unsigned int irq; |
| 126 | struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */ |
| 127 | |
| 128 | /* These fields are used by common fixups */ |
| 129 | unsigned int transparent:1; /* Transparent PCI bridge */ |
| 130 | unsigned int multifunction:1;/* Part of multi-function device */ |
| 131 | /* keep track of device state */ |
| 132 | unsigned int is_enabled:1; /* pci_enable_device has been called */ |
| 133 | unsigned int is_busmaster:1; /* device is busmaster */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 134 | unsigned int no_msi:1; /* device may not use msi */ |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 135 | unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ |
Kristen Accardi | 4602b88 | 2005-08-16 15:15:58 -0700 | [diff] [blame] | 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | u32 saved_config_space[16]; /* config space saved at suspend time */ |
| 138 | struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ |
| 139 | int rom_attr_enabled; /* has display of the rom attribute been enabled? */ |
| 140 | struct bin_attribute *res_attr[DEVICE_COUNT_RESOURCE]; /* sysfs file for resources */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | }; |
| 142 | |
| 143 | #define pci_dev_g(n) list_entry(n, struct pci_dev, global_list) |
| 144 | #define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list) |
| 145 | #define to_pci_dev(n) container_of(n, struct pci_dev, dev) |
| 146 | #define for_each_pci_dev(d) while ((d = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, d)) != NULL) |
| 147 | |
| 148 | /* |
| 149 | * For PCI devices, the region numbers are assigned this way: |
| 150 | * |
| 151 | * 0-5 standard PCI regions |
| 152 | * 6 expansion ROM |
| 153 | * 7-10 bridges: address space assigned to buses behind the bridge |
| 154 | */ |
| 155 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 156 | #define PCI_ROM_RESOURCE 6 |
| 157 | #define PCI_BRIDGE_RESOURCES 7 |
| 158 | #define PCI_NUM_RESOURCES 11 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | #ifndef PCI_BUS_NUM_RESOURCES |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 161 | #define PCI_BUS_NUM_RESOURCES 8 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | #endif |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 163 | |
| 164 | #define PCI_REGION_FLAG_MASK 0x0fU /* These bits of resource flags tell us the PCI region flags */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
| 166 | struct pci_bus { |
| 167 | struct list_head node; /* node in list of buses */ |
| 168 | struct pci_bus *parent; /* parent bus this bridge is on */ |
| 169 | struct list_head children; /* list of child buses */ |
| 170 | struct list_head devices; /* list of devices on this bus */ |
| 171 | struct pci_dev *self; /* bridge device as seen by parent */ |
| 172 | struct resource *resource[PCI_BUS_NUM_RESOURCES]; |
| 173 | /* address space routed to this bus */ |
| 174 | |
| 175 | struct pci_ops *ops; /* configuration access functions */ |
| 176 | void *sysdata; /* hook for sys-specific extension */ |
| 177 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/pci */ |
| 178 | |
| 179 | unsigned char number; /* bus number */ |
| 180 | unsigned char primary; /* number of primary bridge */ |
| 181 | unsigned char secondary; /* number of secondary bridge */ |
| 182 | unsigned char subordinate; /* max number of subordinate buses */ |
| 183 | |
| 184 | char name[48]; |
| 185 | |
| 186 | unsigned short bridge_ctl; /* manage NO_ISA/FBB/et al behaviors */ |
| 187 | unsigned short pad2; |
| 188 | struct device *bridge; |
| 189 | struct class_device class_dev; |
| 190 | struct bin_attribute *legacy_io; /* legacy I/O for this bus */ |
| 191 | struct bin_attribute *legacy_mem; /* legacy mem */ |
| 192 | }; |
| 193 | |
| 194 | #define pci_bus_b(n) list_entry(n, struct pci_bus, node) |
| 195 | #define to_pci_bus(n) container_of(n, struct pci_bus, class_dev) |
| 196 | |
| 197 | /* |
| 198 | * Error values that may be returned by PCI functions. |
| 199 | */ |
| 200 | #define PCIBIOS_SUCCESSFUL 0x00 |
| 201 | #define PCIBIOS_FUNC_NOT_SUPPORTED 0x81 |
| 202 | #define PCIBIOS_BAD_VENDOR_ID 0x83 |
| 203 | #define PCIBIOS_DEVICE_NOT_FOUND 0x86 |
| 204 | #define PCIBIOS_BAD_REGISTER_NUMBER 0x87 |
| 205 | #define PCIBIOS_SET_FAILED 0x88 |
| 206 | #define PCIBIOS_BUFFER_TOO_SMALL 0x89 |
| 207 | |
| 208 | /* Low-level architecture-dependent routines */ |
| 209 | |
| 210 | struct pci_ops { |
| 211 | int (*read)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val); |
| 212 | int (*write)(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val); |
| 213 | }; |
| 214 | |
| 215 | struct pci_raw_ops { |
| 216 | int (*read)(unsigned int domain, unsigned int bus, unsigned int devfn, |
| 217 | int reg, int len, u32 *val); |
| 218 | int (*write)(unsigned int domain, unsigned int bus, unsigned int devfn, |
| 219 | int reg, int len, u32 val); |
| 220 | }; |
| 221 | |
| 222 | extern struct pci_raw_ops *raw_pci_ops; |
| 223 | |
| 224 | struct pci_bus_region { |
| 225 | unsigned long start; |
| 226 | unsigned long end; |
| 227 | }; |
| 228 | |
| 229 | struct pci_dynids { |
| 230 | spinlock_t lock; /* protects list, index */ |
| 231 | struct list_head list; /* for IDs added at runtime */ |
| 232 | unsigned int use_driver_data:1; /* pci_driver->driver_data is used */ |
| 233 | }; |
| 234 | |
| 235 | struct module; |
| 236 | struct pci_driver { |
| 237 | struct list_head node; |
| 238 | char *name; |
| 239 | struct module *owner; |
| 240 | const struct pci_device_id *id_table; /* must be non-NULL for probe to be called */ |
| 241 | int (*probe) (struct pci_dev *dev, const struct pci_device_id *id); /* New device inserted */ |
| 242 | void (*remove) (struct pci_dev *dev); /* Device removed (NULL if not a hot-plug capable driver) */ |
| 243 | int (*suspend) (struct pci_dev *dev, pm_message_t state); /* Device suspended */ |
| 244 | int (*resume) (struct pci_dev *dev); /* Device woken up */ |
Pavel Machek | 438510f | 2005-04-16 15:25:24 -0700 | [diff] [blame] | 245 | int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */ |
Greg KH | c895817 | 2005-04-08 14:53:31 +0900 | [diff] [blame] | 246 | void (*shutdown) (struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | struct device_driver driver; |
| 249 | struct pci_dynids dynids; |
| 250 | }; |
| 251 | |
| 252 | #define to_pci_driver(drv) container_of(drv,struct pci_driver, driver) |
| 253 | |
| 254 | /** |
| 255 | * PCI_DEVICE - macro used to describe a specific pci device |
| 256 | * @vend: the 16 bit PCI Vendor ID |
| 257 | * @dev: the 16 bit PCI Device ID |
| 258 | * |
| 259 | * This macro is used to create a struct pci_device_id that matches a |
| 260 | * specific device. The subvendor and subdevice fields will be set to |
| 261 | * PCI_ANY_ID. |
| 262 | */ |
| 263 | #define PCI_DEVICE(vend,dev) \ |
| 264 | .vendor = (vend), .device = (dev), \ |
| 265 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 266 | |
| 267 | /** |
| 268 | * PCI_DEVICE_CLASS - macro used to describe a specific pci device class |
| 269 | * @dev_class: the class, subclass, prog-if triple for this device |
| 270 | * @dev_class_mask: the class mask for this device |
| 271 | * |
| 272 | * This macro is used to create a struct pci_device_id that matches a |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 273 | * specific PCI class. The vendor, device, subvendor, and subdevice |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | * fields will be set to PCI_ANY_ID. |
| 275 | */ |
| 276 | #define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \ |
| 277 | .class = (dev_class), .class_mask = (dev_class_mask), \ |
| 278 | .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \ |
| 279 | .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID |
| 280 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 281 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | * pci_module_init is obsolete, this stays here till we fix up all usages of it |
| 283 | * in the tree. |
| 284 | */ |
| 285 | #define pci_module_init pci_register_driver |
| 286 | |
| 287 | /* these external functions are only available when PCI support is enabled */ |
| 288 | #ifdef CONFIG_PCI |
| 289 | |
| 290 | extern struct bus_type pci_bus_type; |
| 291 | |
| 292 | /* Do NOT directly access these two variables, unless you are arch specific pci |
| 293 | * code, or pci core code. */ |
| 294 | extern struct list_head pci_root_buses; /* list of all known PCI buses */ |
| 295 | extern struct list_head pci_devices; /* list of all devices */ |
| 296 | |
| 297 | void pcibios_fixup_bus(struct pci_bus *); |
| 298 | int pcibios_enable_device(struct pci_dev *, int mask); |
| 299 | char *pcibios_setup (char *str); |
| 300 | |
| 301 | /* Used only when drivers/pci/setup.c is used */ |
| 302 | void pcibios_align_resource(void *, struct resource *, |
| 303 | unsigned long, unsigned long); |
| 304 | void pcibios_update_irq(struct pci_dev *, int irq); |
| 305 | |
| 306 | /* Generic PCI functions used internally */ |
| 307 | |
| 308 | extern struct pci_bus *pci_find_bus(int domain, int busnr); |
Rajesh Shah | c431ada | 2005-04-28 00:25:45 -0700 | [diff] [blame] | 309 | void pci_bus_add_devices(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
| 311 | static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata) |
| 312 | { |
Rajesh Shah | c431ada | 2005-04-28 00:25:45 -0700 | [diff] [blame] | 313 | struct pci_bus *root_bus; |
| 314 | root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata); |
| 315 | if (root_bus) |
| 316 | pci_bus_add_devices(root_bus); |
| 317 | return root_bus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | } |
Paul Mackerras | cdb9b9f | 2005-09-06 09:31:03 +1000 | [diff] [blame] | 319 | struct pci_bus *pci_create_bus(struct device *parent, int bus, struct pci_ops *ops, void *sysdata); |
| 320 | struct pci_bus * pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | int pci_scan_slot(struct pci_bus *bus, int devfn); |
| 322 | struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn); |
Paul Mackerras | cdb9b9f | 2005-09-06 09:31:03 +1000 | [diff] [blame] | 323 | void pci_device_add(struct pci_dev *dev, struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | unsigned int pci_scan_child_bus(struct pci_bus *bus); |
| 325 | void pci_bus_add_device(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | void pci_read_bridge_bases(struct pci_bus *child); |
| 327 | struct resource *pci_find_parent_resource(const struct pci_dev *dev, struct resource *res); |
| 328 | int pci_get_interrupt_pin(struct pci_dev *dev, struct pci_dev **bridge); |
| 329 | extern struct pci_dev *pci_dev_get(struct pci_dev *dev); |
| 330 | extern void pci_dev_put(struct pci_dev *dev); |
| 331 | extern void pci_remove_bus(struct pci_bus *b); |
| 332 | extern void pci_remove_bus_device(struct pci_dev *dev); |
Dominik Brodowski | b3743fa | 2005-09-09 13:03:23 -0700 | [diff] [blame] | 333 | void pci_setup_cardbus(struct pci_bus *bus); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
| 335 | /* Generic PCI functions exported to card drivers */ |
| 336 | |
| 337 | struct pci_dev *pci_find_device (unsigned int vendor, unsigned int device, const struct pci_dev *from); |
| 338 | struct pci_dev *pci_find_device_reverse (unsigned int vendor, unsigned int device, const struct pci_dev *from); |
| 339 | struct pci_dev *pci_find_slot (unsigned int bus, unsigned int devfn); |
| 340 | int pci_find_capability (struct pci_dev *dev, int cap); |
| 341 | int pci_find_ext_capability (struct pci_dev *dev, int cap); |
| 342 | struct pci_bus * pci_find_next_bus(const struct pci_bus *from); |
| 343 | |
| 344 | struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from); |
| 345 | struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, |
| 346 | unsigned int ss_vendor, unsigned int ss_device, |
| 347 | struct pci_dev *from); |
| 348 | struct pci_dev *pci_get_slot (struct pci_bus *bus, unsigned int devfn); |
| 349 | struct pci_dev *pci_get_class (unsigned int class, struct pci_dev *from); |
| 350 | int pci_dev_present(const struct pci_device_id *ids); |
| 351 | |
| 352 | int pci_bus_read_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 *val); |
| 353 | int pci_bus_read_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 *val); |
| 354 | int pci_bus_read_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 *val); |
| 355 | int pci_bus_write_config_byte (struct pci_bus *bus, unsigned int devfn, int where, u8 val); |
| 356 | int pci_bus_write_config_word (struct pci_bus *bus, unsigned int devfn, int where, u16 val); |
| 357 | int pci_bus_write_config_dword (struct pci_bus *bus, unsigned int devfn, int where, u32 val); |
| 358 | |
| 359 | static inline int pci_read_config_byte(struct pci_dev *dev, int where, u8 *val) |
| 360 | { |
| 361 | return pci_bus_read_config_byte (dev->bus, dev->devfn, where, val); |
| 362 | } |
| 363 | static inline int pci_read_config_word(struct pci_dev *dev, int where, u16 *val) |
| 364 | { |
| 365 | return pci_bus_read_config_word (dev->bus, dev->devfn, where, val); |
| 366 | } |
| 367 | static inline int pci_read_config_dword(struct pci_dev *dev, int where, u32 *val) |
| 368 | { |
| 369 | return pci_bus_read_config_dword (dev->bus, dev->devfn, where, val); |
| 370 | } |
| 371 | static inline int pci_write_config_byte(struct pci_dev *dev, int where, u8 val) |
| 372 | { |
| 373 | return pci_bus_write_config_byte (dev->bus, dev->devfn, where, val); |
| 374 | } |
| 375 | static inline int pci_write_config_word(struct pci_dev *dev, int where, u16 val) |
| 376 | { |
| 377 | return pci_bus_write_config_word (dev->bus, dev->devfn, where, val); |
| 378 | } |
| 379 | static inline int pci_write_config_dword(struct pci_dev *dev, int where, u32 val) |
| 380 | { |
| 381 | return pci_bus_write_config_dword (dev->bus, dev->devfn, where, val); |
| 382 | } |
| 383 | |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 384 | int pci_enable_device(struct pci_dev *dev); |
| 385 | int pci_enable_device_bars(struct pci_dev *dev, int mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | void pci_disable_device(struct pci_dev *dev); |
| 387 | void pci_set_master(struct pci_dev *dev); |
| 388 | #define HAVE_PCI_SET_MWI |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 389 | int pci_set_mwi(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | void pci_clear_mwi(struct pci_dev *dev); |
Brett M Russ | a04ce0f | 2005-08-15 15:23:41 -0400 | [diff] [blame] | 391 | void pci_intx(struct pci_dev *dev, int enable); |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 392 | int pci_set_dma_mask(struct pci_dev *dev, u64 mask); |
| 393 | int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask); |
John W. Linville | 064b53db | 2005-07-27 10:19:44 -0400 | [diff] [blame] | 394 | void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | int pci_assign_resource(struct pci_dev *dev, int i); |
John W. Linville | 064b53db | 2005-07-27 10:19:44 -0400 | [diff] [blame] | 396 | void pci_restore_bars(struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
| 398 | /* ROM control related routines */ |
Dave Jones | 144a50e | 2005-08-09 00:20:10 -0400 | [diff] [blame] | 399 | void __iomem __must_check *pci_map_rom(struct pci_dev *pdev, size_t *size); |
| 400 | void __iomem __must_check *pci_map_rom_copy(struct pci_dev *pdev, size_t *size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom); |
| 402 | void pci_remove_rom(struct pci_dev *pdev); |
| 403 | |
| 404 | /* Power management related routines */ |
| 405 | int pci_save_state(struct pci_dev *dev); |
| 406 | int pci_restore_state(struct pci_dev *dev); |
Linus Torvalds | 9c8550e | 2005-09-09 15:43:46 -0700 | [diff] [blame] | 407 | int pci_set_power_state(struct pci_dev *dev, pci_power_t state); |
| 408 | pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state); |
| 409 | int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | |
| 411 | /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ |
| 412 | void pci_bus_assign_resources(struct pci_bus *bus); |
| 413 | void pci_bus_size_bridges(struct pci_bus *bus); |
| 414 | int pci_claim_resource(struct pci_dev *, int); |
| 415 | void pci_assign_unassigned_resources(void); |
| 416 | void pdev_enable_device(struct pci_dev *); |
| 417 | void pdev_sort_resources(struct pci_dev *, struct resource_list *); |
| 418 | void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *), |
| 419 | int (*)(struct pci_dev *, u8, u8)); |
| 420 | #define HAVE_PCI_REQ_REGIONS 2 |
| 421 | int pci_request_regions(struct pci_dev *, char *); |
| 422 | void pci_release_regions(struct pci_dev *); |
| 423 | int pci_request_region(struct pci_dev *, int, char *); |
| 424 | void pci_release_region(struct pci_dev *, int); |
| 425 | |
| 426 | /* drivers/pci/bus.c */ |
| 427 | int pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res, |
| 428 | unsigned long size, unsigned long align, |
| 429 | unsigned long min, unsigned int type_mask, |
| 430 | void (*alignf)(void *, struct resource *, |
| 431 | unsigned long, unsigned long), |
| 432 | void *alignf_data); |
| 433 | void pci_enable_bridges(struct pci_bus *bus); |
| 434 | |
| 435 | /* New-style probing supporting hot-pluggable devices */ |
| 436 | int pci_register_driver(struct pci_driver *); |
| 437 | void pci_unregister_driver(struct pci_driver *); |
| 438 | void pci_remove_behind_bridge(struct pci_dev *); |
| 439 | struct pci_driver *pci_dev_driver(const struct pci_dev *); |
Greg Kroah-Hartman | 7586585 | 2005-06-30 02:18:12 -0700 | [diff] [blame] | 440 | const struct pci_device_id *pci_match_device(struct pci_driver *drv, struct pci_dev *dev); |
| 441 | const struct pci_device_id *pci_match_id(const struct pci_device_id *ids, struct pci_dev *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | int pci_scan_bridge(struct pci_bus *bus, struct pci_dev * dev, int max, int pass); |
| 443 | |
Paul Mackerras | cecf486 | 2005-08-18 14:33:01 +1000 | [diff] [blame] | 444 | void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *), |
| 445 | void *userdata); |
| 446 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | /* kmem_cache style wrapper around pci_alloc_consistent() */ |
| 448 | |
| 449 | #include <linux/dmapool.h> |
| 450 | |
| 451 | #define pci_pool dma_pool |
| 452 | #define pci_pool_create(name, pdev, size, align, allocation) \ |
| 453 | dma_pool_create(name, &pdev->dev, size, align, allocation) |
| 454 | #define pci_pool_destroy(pool) dma_pool_destroy(pool) |
| 455 | #define pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle) |
| 456 | #define pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr) |
| 457 | |
David S. Miller | e24c2d9 | 2005-06-02 12:55:50 -0700 | [diff] [blame] | 458 | enum pci_dma_burst_strategy { |
| 459 | PCI_DMA_BURST_INFINITY, /* make bursts as large as possible, |
| 460 | strategy_parameter is N/A */ |
| 461 | PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter |
| 462 | byte boundaries */ |
| 463 | PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of |
| 464 | strategy_parameter byte boundaries */ |
| 465 | }; |
| 466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | #if defined(CONFIG_ISA) || defined(CONFIG_EISA) |
| 468 | extern struct pci_dev *isa_bridge; |
| 469 | #endif |
| 470 | |
| 471 | struct msix_entry { |
| 472 | u16 vector; /* kernel uses to write allocated vector */ |
| 473 | u16 entry; /* driver uses to specify entry, OS writes */ |
| 474 | }; |
| 475 | |
| 476 | #ifndef CONFIG_PCI_MSI |
| 477 | static inline void pci_scan_msi_device(struct pci_dev *dev) {} |
| 478 | static inline int pci_enable_msi(struct pci_dev *dev) {return -1;} |
| 479 | static inline void pci_disable_msi(struct pci_dev *dev) {} |
| 480 | static inline int pci_enable_msix(struct pci_dev* dev, |
| 481 | struct msix_entry *entries, int nvec) {return -1;} |
| 482 | static inline void pci_disable_msix(struct pci_dev *dev) {} |
| 483 | static inline void msi_remove_pci_irq_vectors(struct pci_dev *dev) {} |
| 484 | #else |
| 485 | extern void pci_scan_msi_device(struct pci_dev *dev); |
| 486 | extern int pci_enable_msi(struct pci_dev *dev); |
| 487 | extern void pci_disable_msi(struct pci_dev *dev); |
| 488 | extern int pci_enable_msix(struct pci_dev* dev, |
| 489 | struct msix_entry *entries, int nvec); |
| 490 | extern void pci_disable_msix(struct pci_dev *dev); |
| 491 | extern void msi_remove_pci_irq_vectors(struct pci_dev *dev); |
| 492 | #endif |
| 493 | |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 494 | extern void pci_block_user_cfg_access(struct pci_dev *dev); |
| 495 | extern void pci_unblock_user_cfg_access(struct pci_dev *dev); |
| 496 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 497 | /* |
| 498 | * PCI domain support. Sometimes called PCI segment (eg by ACPI), |
| 499 | * a PCI domain is defined to be a set of PCI busses which share |
| 500 | * configuration space. |
| 501 | */ |
| 502 | #ifndef CONFIG_PCI_DOMAINS |
| 503 | static inline int pci_domain_nr(struct pci_bus *bus) { return 0; } |
| 504 | static inline int pci_proc_domain(struct pci_bus *bus) |
| 505 | { |
| 506 | return 0; |
| 507 | } |
| 508 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 510 | #else /* CONFIG_PCI is not enabled */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
| 512 | /* |
| 513 | * If the system does not have PCI, clearly these return errors. Define |
| 514 | * these as simple inline functions to avoid hair in drivers. |
| 515 | */ |
| 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | #define _PCI_NOP(o,s,t) \ |
| 518 | static inline int pci_##o##_config_##s (struct pci_dev *dev, int where, t val) \ |
| 519 | { return PCIBIOS_FUNC_NOT_SUPPORTED; } |
| 520 | #define _PCI_NOP_ALL(o,x) _PCI_NOP(o,byte,u8 x) \ |
| 521 | _PCI_NOP(o,word,u16 x) \ |
| 522 | _PCI_NOP(o,dword,u32 x) |
| 523 | _PCI_NOP_ALL(read, *) |
| 524 | _PCI_NOP_ALL(write,) |
| 525 | |
| 526 | static inline struct pci_dev *pci_find_device(unsigned int vendor, unsigned int device, const struct pci_dev *from) |
| 527 | { return NULL; } |
| 528 | |
| 529 | static inline struct pci_dev *pci_find_slot(unsigned int bus, unsigned int devfn) |
| 530 | { return NULL; } |
| 531 | |
| 532 | static inline struct pci_dev *pci_get_device (unsigned int vendor, unsigned int device, struct pci_dev *from) |
| 533 | { return NULL; } |
| 534 | |
| 535 | static inline struct pci_dev *pci_get_subsys (unsigned int vendor, unsigned int device, |
| 536 | unsigned int ss_vendor, unsigned int ss_device, struct pci_dev *from) |
| 537 | { return NULL; } |
| 538 | |
| 539 | static inline struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from) |
| 540 | { return NULL; } |
| 541 | |
| 542 | #define pci_dev_present(ids) (0) |
| 543 | #define pci_dev_put(dev) do { } while (0) |
| 544 | |
| 545 | static inline void pci_set_master(struct pci_dev *dev) { } |
| 546 | static inline int pci_enable_device(struct pci_dev *dev) { return -EIO; } |
| 547 | static inline void pci_disable_device(struct pci_dev *dev) { } |
| 548 | static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask) { return -EIO; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | static inline int pci_assign_resource(struct pci_dev *dev, int i) { return -EBUSY;} |
| 550 | static inline int pci_register_driver(struct pci_driver *drv) { return 0;} |
| 551 | static inline void pci_unregister_driver(struct pci_driver *drv) { } |
| 552 | static inline int pci_find_capability (struct pci_dev *dev, int cap) {return 0; } |
| 553 | static inline int pci_find_ext_capability (struct pci_dev *dev, int cap) {return 0; } |
| 554 | static inline const struct pci_device_id *pci_match_device(const struct pci_device_id *ids, const struct pci_dev *dev) { return NULL; } |
| 555 | |
| 556 | /* Power management related routines */ |
| 557 | static inline int pci_save_state(struct pci_dev *dev) { return 0; } |
| 558 | static inline int pci_restore_state(struct pci_dev *dev) { return 0; } |
| 559 | static inline int pci_set_power_state(struct pci_dev *dev, pci_power_t state) { return 0; } |
Pavel Machek | 438510f | 2005-04-16 15:25:24 -0700 | [diff] [blame] | 560 | static inline pci_power_t pci_choose_state(struct pci_dev *dev, pm_message_t state) { return PCI_D0; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | static inline int pci_enable_wake(struct pci_dev *dev, pci_power_t state, int enable) { return 0; } |
| 562 | |
| 563 | #define isa_bridge ((struct pci_dev *)NULL) |
| 564 | |
Kumar Gala | a46e812 | 2005-07-29 12:16:27 -0700 | [diff] [blame] | 565 | #define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0) |
| 566 | |
Brian King | e04b0ea | 2005-09-27 01:21:55 -0700 | [diff] [blame] | 567 | static inline void pci_block_user_cfg_access(struct pci_dev *dev) { } |
| 568 | static inline void pci_unblock_user_cfg_access(struct pci_dev *dev) { } |
| 569 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 570 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
Greg Kroah-Hartman | 4352dfd | 2005-07-28 11:37:33 -0700 | [diff] [blame] | 572 | /* Include architecture-dependent settings and functions */ |
| 573 | |
| 574 | #include <asm/pci.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | |
| 576 | /* these helpers provide future and backwards compatibility |
| 577 | * for accessing popular PCI BAR info */ |
| 578 | #define pci_resource_start(dev,bar) ((dev)->resource[(bar)].start) |
| 579 | #define pci_resource_end(dev,bar) ((dev)->resource[(bar)].end) |
| 580 | #define pci_resource_flags(dev,bar) ((dev)->resource[(bar)].flags) |
| 581 | #define pci_resource_len(dev,bar) \ |
| 582 | ((pci_resource_start((dev),(bar)) == 0 && \ |
| 583 | pci_resource_end((dev),(bar)) == \ |
| 584 | pci_resource_start((dev),(bar))) ? 0 : \ |
| 585 | \ |
| 586 | (pci_resource_end((dev),(bar)) - \ |
| 587 | pci_resource_start((dev),(bar)) + 1)) |
| 588 | |
| 589 | /* Similar to the helpers above, these manipulate per-pci_dev |
| 590 | * driver-specific data. They are really just a wrapper around |
| 591 | * the generic device structure functions of these calls. |
| 592 | */ |
| 593 | static inline void *pci_get_drvdata (struct pci_dev *pdev) |
| 594 | { |
| 595 | return dev_get_drvdata(&pdev->dev); |
| 596 | } |
| 597 | |
| 598 | static inline void pci_set_drvdata (struct pci_dev *pdev, void *data) |
| 599 | { |
| 600 | dev_set_drvdata(&pdev->dev, data); |
| 601 | } |
| 602 | |
| 603 | /* If you want to know what to call your pci_dev, ask this function. |
| 604 | * Again, it's a wrapper around the generic device. |
| 605 | */ |
| 606 | static inline char *pci_name(struct pci_dev *pdev) |
| 607 | { |
| 608 | return pdev->dev.bus_id; |
| 609 | } |
| 610 | |
Michael Ellerman | 2311b1f | 2005-05-13 17:44:10 +1000 | [diff] [blame] | 611 | |
| 612 | /* Some archs don't want to expose struct resource to userland as-is |
| 613 | * in sysfs and /proc |
| 614 | */ |
| 615 | #ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER |
| 616 | static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, |
| 617 | const struct resource *rsrc, u64 *start, u64 *end) |
| 618 | { |
| 619 | *start = rsrc->start; |
| 620 | *end = rsrc->end; |
| 621 | } |
| 622 | #endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */ |
| 623 | |
| 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * The world is not perfect and supplies us with broken PCI devices. |
| 627 | * For at least a part of these bugs we need a work-around, so both |
| 628 | * generic (drivers/pci/quirks.c) and per-architecture code can define |
| 629 | * fixup hooks to be called for particular buggy devices. |
| 630 | */ |
| 631 | |
| 632 | struct pci_fixup { |
| 633 | u16 vendor, device; /* You can use PCI_ANY_ID here of course */ |
| 634 | void (*hook)(struct pci_dev *dev); |
| 635 | }; |
| 636 | |
| 637 | enum pci_fixup_pass { |
| 638 | pci_fixup_early, /* Before probing BARs */ |
| 639 | pci_fixup_header, /* After reading configuration header */ |
| 640 | pci_fixup_final, /* Final phase of device fixups */ |
| 641 | pci_fixup_enable, /* pci_enable_device() time */ |
| 642 | }; |
| 643 | |
| 644 | /* Anonymous variables would be nice... */ |
| 645 | #define DECLARE_PCI_FIXUP_SECTION(section, name, vendor, device, hook) \ |
akpm@osdl.org | 74d863e | 2005-07-25 23:28:14 -0700 | [diff] [blame] | 646 | static const struct pci_fixup __pci_fixup_##name __attribute_used__ \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | __attribute__((__section__(#section))) = { vendor, device, hook }; |
| 648 | #define DECLARE_PCI_FIXUP_EARLY(vendor, device, hook) \ |
| 649 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_early, \ |
| 650 | vendor##device##hook, vendor, device, hook) |
| 651 | #define DECLARE_PCI_FIXUP_HEADER(vendor, device, hook) \ |
| 652 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_header, \ |
| 653 | vendor##device##hook, vendor, device, hook) |
| 654 | #define DECLARE_PCI_FIXUP_FINAL(vendor, device, hook) \ |
| 655 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_final, \ |
| 656 | vendor##device##hook, vendor, device, hook) |
| 657 | #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook) \ |
| 658 | DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable, \ |
| 659 | vendor##device##hook, vendor, device, hook) |
| 660 | |
| 661 | |
| 662 | void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev); |
| 663 | |
| 664 | extern int pci_pci_problems; |
| 665 | #define PCIPCI_FAIL 1 |
| 666 | #define PCIPCI_TRITON 2 |
| 667 | #define PCIPCI_NATOMA 4 |
| 668 | #define PCIPCI_VIAETBF 8 |
| 669 | #define PCIPCI_VSFX 16 |
| 670 | #define PCIPCI_ALIMAGIK 32 |
| 671 | |
| 672 | #endif /* __KERNEL__ */ |
| 673 | #endif /* LINUX_PCI_H */ |