include/linux/pnp.h

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