include/linux/pnp.h

   1 /*
   2  * Linux Plug and Play Support
   3  * Copyright by Adam Belay <ambx1@neo.rr.com>
   4  */
   5
   6 #ifndef _LINUX_PNP_H
   7 #define _LINUX_PNP_H
   8
   9 #ifdef __KERNEL__
  10
  11 #include <linux/device.h>
  12 #include <linux/list.h>
  13 #include <linux/errno.h>
  14 #include <linux/mod_devicetable.h>
  15
  16 #define PNP_MAX_PORT            40
  17 #define PNP_MAX_MEM             24
  18 #define PNP_MAX_IRQ             2
  19 #define PNP_MAX_DMA             2
  20 #define PNP_NAME_LEN            50
  21
  22 struct pnp_protocol;
  23 struct pnp_dev;
  24
  25 /*
  26  * Resource Management
  27  */
  28 struct resource *pnp_get_resource(struct pnp_dev *, unsigned int, unsigned int);
  29
  30 static inline int pnp_resource_valid(struct resource *res)
  31 {
  32         if (res && !(res->flags & IORESOURCE_UNSET))
  33                 return 1;
  34         return 0;
  35 }
  36
  37 static inline resource_size_t pnp_resource_len(struct resource *res)
  38 {
  39         if (res->start == 0 && res->end == 0)
  40                 return 0;
  41         return res->end - res->start + 1;
  42 }
  43
  44
  45 static inline resource_size_t pnp_port_start(struct pnp_dev *dev,
  46                                              unsigned int bar)
  47 {
  48         return pnp_get_resource(dev, IORESOURCE_IO, bar)->start;
  49 }
  50
  51 static inline resource_size_t pnp_port_end(struct pnp_dev *dev,
  52                                            unsigned int bar)
  53 {
  54         return pnp_get_resource(dev, IORESOURCE_IO, bar)->end;
  55 }
  56
  57 static inline unsigned long pnp_port_flags(struct pnp_dev *dev,
  58                                            unsigned int bar)
  59 {
  60         return pnp_get_resource(dev, IORESOURCE_IO, bar)->flags;
  61 }
  62
  63 static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar)
  64 {
  65         return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IO, bar));
  66 }
  67
  68 static inline resource_size_t pnp_port_len(struct pnp_dev *dev,
  69                                            unsigned int bar)
  70 {
  71         return pnp_resource_len(pnp_get_resource(dev, IORESOURCE_IO, bar));
  72 }
  73
  74
  75 static inline resource_size_t pnp_mem_start(struct pnp_dev *dev,
  76                                             unsigned int bar)
  77 {
  78         return pnp_get_resource(dev, IORESOURCE_MEM, bar)->start;
  79 }
  80
  81 static inline resource_size_t pnp_mem_end(struct pnp_dev *dev,
  82                                           unsigned int bar)
  83 {
  84         return pnp_get_resource(dev, IORESOURCE_MEM, bar)->end;
  85 }
  86
  87 static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar)
  88 {
  89         return pnp_get_resource(dev, IORESOURCE_MEM, bar)->flags;
  90 }
  91
  92 static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar)
  93 {
  94         return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_MEM, bar));
  95 }
  96
  97 static inline resource_size_t pnp_mem_len(struct pnp_dev *dev,
  98                                           unsigned int bar)
  99 {
 100         return pnp_resource_len(pnp_get_resource(dev, IORESOURCE_MEM, bar));
 101 }
 102
 103
 104 static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar)
 105 {
 106         return pnp_get_resource(dev, IORESOURCE_IRQ, bar)->start;
 107 }
 108
 109 static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar)
 110 {
 111         return pnp_get_resource(dev, IORESOURCE_IRQ, bar)->flags;
 112 }
 113
 114 static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar)
 115 {
 116         return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IRQ, bar));
 117 }
 118
 119
 120 static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar)
 121 {
 122         return pnp_get_resource(dev, IORESOURCE_DMA, bar)->start;
 123 }
 124
 125 static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar)
 126 {
 127         return pnp_get_resource(dev, IORESOURCE_DMA, bar)->flags;
 128 }
 129
 130 static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar)
 131 {
 132         return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_DMA, bar));
 133 }
 134
 135
 136 #define PNP_PORT_FLAG_16BITADDR (1<<0)
 137 #define PNP_PORT_FLAG_FIXED     (1<<1)
 138
 139 struct pnp_port {
 140         unsigned short min;     /* min base number */
 141         unsigned short max;     /* max base number */
 142         unsigned char align;    /* align boundary */
 143         unsigned char size;     /* size of range */
 144         unsigned char flags;    /* port flags */
 145         unsigned char pad;      /* pad */
 146         struct pnp_port *next;  /* next port */
 147 };
 148
 149 #define PNP_IRQ_NR 256
 150 struct pnp_irq {
 151         DECLARE_BITMAP(map, PNP_IRQ_NR);        /* bitmask for IRQ lines */
 152         unsigned char flags;    /* IRQ flags */
 153         unsigned char pad;      /* pad */
 154         struct pnp_irq *next;   /* next IRQ */
 155 };
 156
 157 struct pnp_dma {
 158         unsigned char map;      /* bitmask for DMA channels */
 159         unsigned char flags;    /* DMA flags */
 160         struct pnp_dma *next;   /* next port */
 161 };
 162
 163 struct pnp_mem {
 164         unsigned int min;       /* min base number */
 165         unsigned int max;       /* max base number */
 166         unsigned int align;     /* align boundary */
 167         unsigned int size;      /* size of range */
 168         unsigned char flags;    /* memory flags */
 169         unsigned char pad;      /* pad */
 170         struct pnp_mem *next;   /* next memory resource */
 171 };
 172
 173 #define PNP_RES_PRIORITY_PREFERRED      0
 174 #define PNP_RES_PRIORITY_ACCEPTABLE     1
 175 #define PNP_RES_PRIORITY_FUNCTIONAL     2
 176 #define PNP_RES_PRIORITY_INVALID        65535
 177
 178 struct pnp_option {
 179         unsigned short priority;        /* priority */
 180         struct pnp_port *port;          /* first port */
 181         struct pnp_irq *irq;            /* first IRQ */
 182         struct pnp_dma *dma;            /* first DMA */
 183         struct pnp_mem *mem;            /* first memory resource */
 184         struct pnp_option *next;        /* used to chain dependent resources */
 185 };
 186
 187 struct pnp_resource_table {
 188         struct resource port_resource[PNP_MAX_PORT];
 189         struct resource mem_resource[PNP_MAX_MEM];
 190         struct resource dma_resource[PNP_MAX_DMA];
 191         struct resource irq_resource[PNP_MAX_IRQ];
 192 };
 193
 194 /*
 195  * Device Management
 196  */
 197
 198 struct pnp_card {
 199         struct device dev;              /* Driver Model device interface */
 200         unsigned char number;           /* used as an index, must be unique */
 201         struct list_head global_list;   /* node in global list of cards */
 202         struct list_head protocol_list; /* node in protocol's list of cards */
 203         struct list_head devices;       /* devices attached to the card */
 204
 205         struct pnp_protocol *protocol;
 206         struct pnp_id *id;              /* contains supported EISA IDs */
 207
 208         char name[PNP_NAME_LEN];        /* contains a human-readable name */
 209         unsigned char pnpver;           /* Plug & Play version */
 210         unsigned char productver;       /* product version */
 211         unsigned int serial;            /* serial number */
 212         unsigned char checksum;         /* if zero - checksum passed */
 213         struct proc_dir_entry *procdir; /* directory entry in /proc/bus/isapnp */
 214 };
 215
 216 #define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
 217 #define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
 218 #define to_pnp_card(n) container_of(n, struct pnp_card, dev)
 219 #define pnp_for_each_card(card) \
 220         for((card) = global_to_pnp_card(pnp_cards.next); \
 221         (card) != global_to_pnp_card(&pnp_cards); \
 222         (card) = global_to_pnp_card((card)->global_list.next))
 223
 224 struct pnp_card_link {
 225         struct pnp_card *card;
 226         struct pnp_card_driver *driver;
 227         void *driver_data;
 228         pm_message_t pm_state;
 229 };
 230
 231 static inline void *pnp_get_card_drvdata(struct pnp_card_link *pcard)
 232 {
 233         return pcard->driver_data;
 234 }
 235
 236 static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data)
 237 {
 238         pcard->driver_data = data;
 239 }
 240
 241 struct pnp_dev {
 242         struct device dev;              /* Driver Model device interface */
 243         u64 dma_mask;
 244         unsigned int number;            /* used as an index, must be unique */
 245         int status;
 246
 247         struct list_head global_list;   /* node in global list of devices */
 248         struct list_head protocol_list; /* node in list of device's protocol */
 249         struct list_head card_list;     /* node in card's list of devices */
 250         struct list_head rdev_list;     /* node in cards list of requested devices */
 251
 252         struct pnp_protocol *protocol;
 253         struct pnp_card *card;  /* card the device is attached to, none if NULL */
 254         struct pnp_driver *driver;
 255         struct pnp_card_link *card_link;
 256
 257         struct pnp_id *id;              /* supported EISA IDs */
 258
 259         int active;
 260         int capabilities;
 261         struct pnp_option *independent;
 262         struct pnp_option *dependent;
 263         struct pnp_resource_table res;
 264
 265         char name[PNP_NAME_LEN];        /* contains a human-readable name */
 266         unsigned short regs;            /* ISAPnP: supported registers */
 267         int flags;                      /* used by protocols */
 268         struct proc_dir_entry *procent; /* device entry in /proc/bus/isapnp */
 269         void *data;
 270 };
 271
 272 #define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)
 273 #define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
 274 #define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
 275 #define to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
 276 #define pnp_for_each_dev(dev) \
 277         for((dev) = global_to_pnp_dev(pnp_global.next); \
 278         (dev) != global_to_pnp_dev(&pnp_global); \
 279         (dev) = global_to_pnp_dev((dev)->global_list.next))
 280 #define card_for_each_dev(card,dev) \
 281         for((dev) = card_to_pnp_dev((card)->devices.next); \
 282         (dev) != card_to_pnp_dev(&(card)->devices); \
 283         (dev) = card_to_pnp_dev((dev)->card_list.next))
 284 #define pnp_dev_name(dev) (dev)->name
 285
 286 static inline void *pnp_get_drvdata(struct pnp_dev *pdev)
 287 {
 288         return dev_get_drvdata(&pdev->dev);
 289 }
 290
 291 static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data)
 292 {
 293         dev_set_drvdata(&pdev->dev, data);
 294 }
 295
 296 struct pnp_fixup {
 297         char id[7];
 298         void (*quirk_function) (struct pnp_dev * dev);  /* fixup function */
 299 };
 300
 301 /* config parameters */
 302 #define PNP_CONFIG_NORMAL       0x0001
 303 #define PNP_CONFIG_FORCE        0x0002  /* disables validity checking */
 304
 305 /* capabilities */
 306 #define PNP_READ                0x0001
 307 #define PNP_WRITE               0x0002
 308 #define PNP_DISABLE             0x0004
 309 #define PNP_CONFIGURABLE        0x0008
 310 #define PNP_REMOVABLE           0x0010
 311
 312 #define pnp_can_read(dev)       (((dev)->protocol->get) && \
 313                                  ((dev)->capabilities & PNP_READ))
 314 #define pnp_can_write(dev)      (((dev)->protocol->set) && \
 315                                  ((dev)->capabilities & PNP_WRITE))
 316 #define pnp_can_disable(dev)    (((dev)->protocol->disable) && \
 317                                  ((dev)->capabilities & PNP_DISABLE))
 318 #define pnp_can_configure(dev)  ((!(dev)->active) && \
 319                                  ((dev)->capabilities & PNP_CONFIGURABLE))
 320
 321 #ifdef CONFIG_ISAPNP
 322 extern struct pnp_protocol isapnp_protocol;
 323 #define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
 324 #else
 325 #define pnp_device_is_isapnp(dev) 0
 326 #endif
 327 extern struct mutex pnp_res_mutex;
 328
 329 #ifdef CONFIG_PNPBIOS
 330 extern struct pnp_protocol pnpbios_protocol;
 331 #define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
 332 #else
 333 #define pnp_device_is_pnpbios(dev) 0
 334 #endif
 335
 336 /* status */
 337 #define PNP_READY               0x0000
 338 #define PNP_ATTACHED            0x0001
 339 #define PNP_BUSY                0x0002
 340 #define PNP_FAULTY              0x0004
 341
 342 /* isapnp specific macros */
 343
 344 #define isapnp_card_number(dev) ((dev)->card ? (dev)->card->number : -1)
 345 #define isapnp_csn_number(dev)  ((dev)->number)
 346
 347 /*
 348  * Driver Management
 349  */
 350
 351 struct pnp_id {
 352         char id[PNP_ID_LEN];
 353         struct pnp_id *next;
 354 };
 355
 356 struct pnp_driver {
 357         char *name;
 358         const struct pnp_device_id *id_table;
 359         unsigned int flags;
 360         int (*probe) (struct pnp_dev *dev, const struct pnp_device_id *dev_id);
 361         void (*remove) (struct pnp_dev *dev);
 362         int (*suspend) (struct pnp_dev *dev, pm_message_t state);
 363         int (*resume) (struct pnp_dev *dev);
 364         struct device_driver driver;
 365 };
 366
 367 #define to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)
 368
 369 struct pnp_card_driver {
 370         struct list_head global_list;
 371         char *name;
 372         const struct pnp_card_device_id *id_table;
 373         unsigned int flags;
 374         int (*probe) (struct pnp_card_link *card,
 375                       const struct pnp_card_device_id *card_id);
 376         void (*remove) (struct pnp_card_link *card);
 377         int (*suspend) (struct pnp_card_link *card, pm_message_t state);
 378         int (*resume) (struct pnp_card_link *card);
 379         struct pnp_driver link;
 380 };
 381
 382 #define to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)
 383
 384 /* pnp driver flags */
 385 #define PNP_DRIVER_RES_DO_NOT_CHANGE    0x0001  /* do not change the state of the device */
 386 #define PNP_DRIVER_RES_DISABLE          0x0003  /* ensure the device is disabled */
 387
 388 /*
 389  * Protocol Management
 390  */
 391
 392 struct pnp_protocol {
 393         struct list_head protocol_list;
 394         char *name;
 395
 396         /* resource control functions */
 397         int (*get) (struct pnp_dev *dev);
 398         int (*set) (struct pnp_dev *dev);
 399         int (*disable) (struct pnp_dev *dev);
 400
 401         /* protocol specific suspend/resume */
 402         int (*suspend) (struct pnp_dev * dev, pm_message_t state);
 403         int (*resume) (struct pnp_dev * dev);
 404
 405         /* used by pnp layer only (look but don't touch) */
 406         unsigned char number;   /* protocol number */
 407         struct device dev;      /* link to driver model */
 408         struct list_head cards;
 409         struct list_head devices;
 410 };
 411
 412 #define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
 413 #define protocol_for_each_card(protocol,card) \
 414         for((card) = protocol_to_pnp_card((protocol)->cards.next); \
 415         (card) != protocol_to_pnp_card(&(protocol)->cards); \
 416         (card) = protocol_to_pnp_card((card)->protocol_list.next))
 417 #define protocol_for_each_dev(protocol,dev) \
 418         for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
 419         (dev) != protocol_to_pnp_dev(&(protocol)->devices); \
 420         (dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
 421
 422 extern struct bus_type pnp_bus_type;
 423
 424 #if defined(CONFIG_PNP)
 425
 426 /* device management */
 427 int pnp_register_protocol(struct pnp_protocol *protocol);
 428 void pnp_unregister_protocol(struct pnp_protocol *protocol);
 429 int pnp_add_device(struct pnp_dev *dev);
 430 int pnp_device_attach(struct pnp_dev *pnp_dev);
 431 void pnp_device_detach(struct pnp_dev *pnp_dev);
 432 extern struct list_head pnp_global;
 433 extern int pnp_platform_devices;
 434
 435 /* multidevice card support */
 436 int pnp_add_card(struct pnp_card *card);
 437 void pnp_remove_card(struct pnp_card *card);
 438 int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
 439 void pnp_remove_card_device(struct pnp_dev *dev);
 440 struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink,
 441                                         const char *id, struct pnp_dev *from);
 442 void pnp_release_card_device(struct pnp_dev *dev);
 443 int pnp_register_card_driver(struct pnp_card_driver *drv);
 444 void pnp_unregister_card_driver(struct pnp_card_driver *drv);
 445 extern struct list_head pnp_cards;
 446
 447 /* resource management */
 448 struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev);
 449 struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev,
 450                                                  int priority);
 451 int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option,
 452                               struct pnp_irq *data);
 453 int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option,
 454                               struct pnp_dma *data);
 455 int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option,
 456                                struct pnp_port *data);
 457 int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option,
 458                               struct pnp_mem *data);
 459 void pnp_init_resources(struct pnp_dev *dev);
 460 int pnp_auto_config_dev(struct pnp_dev *dev);
 461 int pnp_validate_config(struct pnp_dev *dev);
 462 int pnp_start_dev(struct pnp_dev *dev);
 463 int pnp_stop_dev(struct pnp_dev *dev);
 464 int pnp_activate_dev(struct pnp_dev *dev);
 465 int pnp_disable_dev(struct pnp_dev *dev);
 466
 467 /* protocol helpers */
 468 int pnp_is_active(struct pnp_dev *dev);
 469 int compare_pnp_id(struct pnp_id *pos, const char *id);
 470 int pnp_register_driver(struct pnp_driver *drv);
 471 void pnp_unregister_driver(struct pnp_driver *drv);
 472
 473 #else
 474
 475 /* device management */
 476 static inline int pnp_register_protocol(struct pnp_protocol *protocol) { return -ENODEV; }
 477 static inline void pnp_unregister_protocol(struct pnp_protocol *protocol) { }
 478 static inline int pnp_init_device(struct pnp_dev *dev) { return -ENODEV; }
 479 static inline int pnp_add_device(struct pnp_dev *dev) { return -ENODEV; }
 480 static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
 481 static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { }
 482
 483 #define pnp_platform_devices 0
 484
 485 /* multidevice card support */
 486 static inline int pnp_add_card(struct pnp_card *card) { return -ENODEV; }
 487 static inline void pnp_remove_card(struct pnp_card *card) { }
 488 static inline int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) { return -ENODEV; }
 489 static inline void pnp_remove_card_device(struct pnp_dev *dev) { }
 490 static inline struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, const char *id, struct pnp_dev *from) { return NULL; }
 491 static inline void pnp_release_card_device(struct pnp_dev *dev) { }
 492 static inline int pnp_register_card_driver(struct pnp_card_driver *drv) { return -ENODEV; }
 493 static inline void pnp_unregister_card_driver(struct pnp_card_driver *drv) { }
 494
 495 /* resource management */
 496 static inline struct pnp_option *pnp_register_independent_option(struct pnp_dev *dev) { return NULL; }
 497 static inline struct pnp_option *pnp_register_dependent_option(struct pnp_dev *dev, int priority) { return NULL; }
 498 static inline int pnp_register_irq_resource(struct pnp_dev *dev, struct pnp_option *option, struct pnp_irq *data) { return -ENODEV; }
 499 static inline int pnp_register_dma_resource(struct pnp_dev *dev, struct pnp_option *option, struct pnp_dma *data) { return -ENODEV; }
 500 static inline int pnp_register_port_resource(struct pnp_dev *dev, struct pnp_option *option, struct pnp_port *data) { return -ENODEV; }
 501 static inline int pnp_register_mem_resource(struct pnp_dev *dev, struct pnp_option *option, struct pnp_mem *data) { return -ENODEV; }
 502 static inline void pnp_init_resources(struct pnp_dev *dev) { }
 503 static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; }
 504 static inline int pnp_validate_config(struct pnp_dev *dev) { return -ENODEV; }
 505 static inline int pnp_start_dev(struct pnp_dev *dev) { return -ENODEV; }
 506 static inline int pnp_stop_dev(struct pnp_dev *dev) { return -ENODEV; }
 507 static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; }
 508 static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; }
 509
 510 /* protocol helpers */
 511 static inline int pnp_is_active(struct pnp_dev *dev) { return 0; }
 512 static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -ENODEV; }
 513 static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; }
 514 static inline void pnp_unregister_driver(struct pnp_driver *drv) { }
 515
 516 #endif /* CONFIG_PNP */
 517
 518 #define pnp_err(format, arg...) printk(KERN_ERR "pnp: " format "\n" , ## arg)
 519 #define pnp_info(format, arg...) printk(KERN_INFO "pnp: " format "\n" , ## arg)
 520 #define pnp_warn(format, arg...) printk(KERN_WARNING "pnp: " format "\n" , ## arg)
 521
 522 #ifdef CONFIG_PNP_DEBUG
 523 #define pnp_dbg(format, arg...) printk(KERN_DEBUG "pnp: " format "\n" , ## arg)
 524 #else
 525 #define pnp_dbg(format, arg...) do {} while (0)
 526 #endif
 527
 528 #endif /* __KERNEL__ */
 529
 530 #endif /* _LINUX_PNP_H */