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 #define PNP_IRQ_NR 256
  86 struct pnp_irq {
  87         DECLARE_BITMAP(map, PNP_IRQ_NR); /* bitmaks for IRQ lines */
  88         unsigned char flags;            /* IRQ flags */
  89         unsigned char pad;              /* pad */
  90         struct pnp_irq *next;           /* next IRQ */
  91 };
  92
  93 struct pnp_dma {
  94         unsigned char map;              /* bitmask for DMA channels */
  95         unsigned char flags;            /* DMA flags */
  96         struct pnp_dma *next;           /* next port */
  97 };
  98
  99 struct pnp_mem {
 100         unsigned int min;               /* min base number */
 101         unsigned int max;               /* max base number */
 102         unsigned int align;             /* align boundary */
 103         unsigned int size;              /* size of range */
 104         unsigned char flags;            /* memory flags */
 105         unsigned char pad;              /* pad */
 106         struct pnp_mem *next;           /* next memory resource */
 107 };
 108
 109 #define PNP_RES_PRIORITY_PREFERRED      0
 110 #define PNP_RES_PRIORITY_ACCEPTABLE     1
 111 #define PNP_RES_PRIORITY_FUNCTIONAL     2
 112 #define PNP_RES_PRIORITY_INVALID        65535
 113
 114 struct pnp_option {
 115         unsigned short priority;        /* priority */
 116         struct pnp_port *port;          /* first port */
 117         struct pnp_irq *irq;            /* first IRQ */
 118         struct pnp_dma *dma;            /* first DMA */
 119         struct pnp_mem *mem;            /* first memory resource */
 120         struct pnp_option *next;        /* used to chain dependent resources */
 121 };
 122
 123 struct pnp_resource_table {
 124         struct resource port_resource[PNP_MAX_PORT];
 125         struct resource mem_resource[PNP_MAX_MEM];
 126         struct resource dma_resource[PNP_MAX_DMA];
 127         struct resource irq_resource[PNP_MAX_IRQ];
 128 };
 129
 130
 131 /*
 132  * Device Managemnt
 133  */
 134
 135 struct pnp_card {
 136         struct device dev;              /* Driver Model device interface */
 137         unsigned char number;           /* used as an index, must be unique */
 138         struct list_head global_list;   /* node in global list of cards */
 139         struct list_head protocol_list; /* node in protocol's list of cards */
 140         struct list_head devices;       /* devices attached to the card */
 141
 142         struct pnp_protocol * protocol;
 143         struct pnp_id * id;             /* contains supported EISA IDs*/
 144
 145         char name[PNP_NAME_LEN];        /* contains a human-readable name */
 146         unsigned char   pnpver;         /* Plug & Play version */
 147         unsigned char   productver;     /* product version */
 148         unsigned int    serial;         /* serial number */
 149         unsigned char   checksum;       /* if zero - checksum passed */
 150         struct proc_dir_entry *procdir; /* directory entry in /proc/bus/isapnp */
 151 };
 152
 153 #define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list)
 154 #define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list)
 155 #define to_pnp_card(n) container_of(n, struct pnp_card, dev)
 156 #define pnp_for_each_card(card) \
 157         for((card) = global_to_pnp_card(pnp_cards.next); \
 158         (card) != global_to_pnp_card(&pnp_cards); \
 159         (card) = global_to_pnp_card((card)->global_list.next))
 160
 161 struct pnp_card_link {
 162         struct pnp_card * card;
 163         struct pnp_card_driver * driver;
 164         void * driver_data;
 165 };
 166
 167 static inline void *pnp_get_card_drvdata (struct pnp_card_link *pcard)
 168 {
 169         return pcard->driver_data;
 170 }
 171
 172 static inline void pnp_set_card_drvdata (struct pnp_card_link *pcard, void *data)
 173 {
 174         pcard->driver_data = data;
 175 }
 176
 177 struct pnp_dev {
 178         struct device dev;              /* Driver Model device interface */
 179         unsigned char number;           /* used as an index, must be unique */
 180         int status;
 181
 182         struct list_head global_list;   /* node in global list of devices */
 183         struct list_head protocol_list; /* node in list of device's protocol */
 184         struct list_head card_list;     /* node in card's list of devices */
 185         struct list_head rdev_list;     /* node in cards list of requested devices */
 186
 187         struct pnp_protocol * protocol;
 188         struct pnp_card * card;         /* card the device is attached to, none if NULL */
 189         struct pnp_driver * driver;
 190         struct pnp_card_link * card_link;
 191
 192         struct pnp_id   * id;   /* supported EISA IDs*/
 193
 194         int active;
 195         int capabilities;
 196         struct pnp_option * independent;
 197         struct pnp_option * dependent;
 198         struct pnp_resource_table res;
 199
 200         char name[PNP_NAME_LEN];        /* contains a human-readable name */
 201         unsigned short  regs;           /* ISAPnP: supported registers */
 202         int             flags;          /* used by protocols */
 203         struct proc_dir_entry *procent; /* device entry in /proc/bus/isapnp */
 204         void *data;
 205 };
 206
 207 #define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list)
 208 #define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list)
 209 #define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list)
 210 #define to_pnp_dev(n) container_of(n, struct pnp_dev, dev)
 211 #define pnp_for_each_dev(dev) \
 212         for((dev) = global_to_pnp_dev(pnp_global.next); \
 213         (dev) != global_to_pnp_dev(&pnp_global); \
 214         (dev) = global_to_pnp_dev((dev)->global_list.next))
 215 #define card_for_each_dev(card,dev) \
 216         for((dev) = card_to_pnp_dev((card)->devices.next); \
 217         (dev) != card_to_pnp_dev(&(card)->devices); \
 218         (dev) = card_to_pnp_dev((dev)->card_list.next))
 219 #define pnp_dev_name(dev) (dev)->name
 220
 221 static inline void *pnp_get_drvdata (struct pnp_dev *pdev)
 222 {
 223         return dev_get_drvdata(&pdev->dev);
 224 }
 225
 226 static inline void pnp_set_drvdata (struct pnp_dev *pdev, void *data)
 227 {
 228         dev_set_drvdata(&pdev->dev, data);
 229 }
 230
 231 struct pnp_fixup {
 232         char id[7];
 233         void (*quirk_function)(struct pnp_dev *dev);    /* fixup function */
 234 };
 235
 236 /* config parameters */
 237 #define PNP_CONFIG_NORMAL       0x0001
 238 #define PNP_CONFIG_FORCE        0x0002  /* disables validity checking */
 239
 240 /* capabilities */
 241 #define PNP_READ                0x0001
 242 #define PNP_WRITE               0x0002
 243 #define PNP_DISABLE             0x0004
 244 #define PNP_CONFIGURABLE        0x0008
 245 #define PNP_REMOVABLE           0x0010
 246
 247 #define pnp_can_read(dev)       (((dev)->protocol) && ((dev)->protocol->get) && \
 248                                  ((dev)->capabilities & PNP_READ))
 249 #define pnp_can_write(dev)      (((dev)->protocol) && ((dev)->protocol->set) && \
 250                                  ((dev)->capabilities & PNP_WRITE))
 251 #define pnp_can_disable(dev)    (((dev)->protocol) && ((dev)->protocol->disable) && \
 252                                  ((dev)->capabilities & PNP_DISABLE))
 253 #define pnp_can_configure(dev)  ((!(dev)->active) && \
 254                                  ((dev)->capabilities & PNP_CONFIGURABLE))
 255
 256 #ifdef CONFIG_ISAPNP
 257 extern struct pnp_protocol isapnp_protocol;
 258 #define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol))
 259 #else
 260 #define pnp_device_is_isapnp(dev) 0
 261 #endif
 262
 263 #ifdef CONFIG_PNPBIOS
 264 extern struct pnp_protocol pnpbios_protocol;
 265 #define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol))
 266 #else
 267 #define pnp_device_is_pnpbios(dev) 0
 268 #endif
 269
 270
 271 /* status */
 272 #define PNP_READY               0x0000
 273 #define PNP_ATTACHED            0x0001
 274 #define PNP_BUSY                0x0002
 275 #define PNP_FAULTY              0x0004
 276
 277 /* isapnp specific macros */
 278
 279 #define isapnp_card_number(dev) ((dev)->card ? (dev)->card->number : -1)
 280 #define isapnp_csn_number(dev)  ((dev)->number)
 281
 282 /*
 283  * Driver Management
 284  */
 285
 286 struct pnp_id {
 287         char id[PNP_ID_LEN];
 288         struct pnp_id * next;
 289 };
 290
 291 struct pnp_driver {
 292         char * name;
 293         const struct pnp_device_id *id_table;
 294         unsigned int flags;
 295         int  (*probe)  (struct pnp_dev *dev, const struct pnp_device_id *dev_id);
 296         void (*remove) (struct pnp_dev *dev);
 297         struct device_driver driver;
 298 };
 299
 300 #define to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver)
 301
 302 struct pnp_card_driver {
 303         struct list_head global_list;
 304         char * name;
 305         const struct pnp_card_device_id *id_table;
 306         unsigned int flags;
 307         int  (*probe)  (struct pnp_card_link *card, const struct pnp_card_device_id *card_id);
 308         void (*remove) (struct pnp_card_link *card);
 309         struct pnp_driver link;
 310 };
 311
 312 #define to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link)
 313
 314 /* pnp driver flags */
 315 #define PNP_DRIVER_RES_DO_NOT_CHANGE    0x0001  /* do not change the state of the device */
 316 #define PNP_DRIVER_RES_DISABLE          0x0003  /* ensure the device is disabled */
 317
 318
 319 /*
 320  * Protocol Management
 321  */
 322
 323 struct pnp_protocol {
 324         struct list_head        protocol_list;
 325         char                  * name;
 326
 327         /* resource control functions */
 328         int (*get)(struct pnp_dev *dev, struct pnp_resource_table *res);
 329         int (*set)(struct pnp_dev *dev, struct pnp_resource_table *res);
 330         int (*disable)(struct pnp_dev *dev);
 331
 332         /* used by pnp layer only (look but don't touch) */
 333         unsigned char           number;         /* protocol number*/
 334         struct device           dev;            /* link to driver model */
 335         struct list_head        cards;
 336         struct list_head        devices;
 337 };
 338
 339 #define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list)
 340 #define protocol_for_each_card(protocol,card) \
 341         for((card) = protocol_to_pnp_card((protocol)->cards.next); \
 342         (card) != protocol_to_pnp_card(&(protocol)->cards); \
 343         (card) = protocol_to_pnp_card((card)->protocol_list.next))
 344 #define protocol_for_each_dev(protocol,dev) \
 345         for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \
 346         (dev) != protocol_to_pnp_dev(&(protocol)->devices); \
 347         (dev) = protocol_to_pnp_dev((dev)->protocol_list.next))
 348
 349
 350 #if defined(CONFIG_PNP)
 351
 352 /* device management */
 353 int pnp_register_protocol(struct pnp_protocol *protocol);
 354 void pnp_unregister_protocol(struct pnp_protocol *protocol);
 355 int pnp_add_device(struct pnp_dev *dev);
 356 void pnp_remove_device(struct pnp_dev *dev);
 357 int pnp_device_attach(struct pnp_dev *pnp_dev);
 358 void pnp_device_detach(struct pnp_dev *pnp_dev);
 359 extern struct list_head pnp_global;
 360
 361 /* multidevice card support */
 362 int pnp_add_card(struct pnp_card *card);
 363 void pnp_remove_card(struct pnp_card *card);
 364 int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev);
 365 void pnp_remove_card_device(struct pnp_dev *dev);
 366 int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card);
 367 struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from);
 368 void pnp_release_card_device(struct pnp_dev * dev);
 369 int pnp_register_card_driver(struct pnp_card_driver * drv);
 370 void pnp_unregister_card_driver(struct pnp_card_driver * drv);
 371 extern struct list_head pnp_cards;
 372
 373 /* resource management */
 374 struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev);
 375 struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority);
 376 int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data);
 377 int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data);
 378 int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data);
 379 int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data);
 380 void pnp_init_resource_table(struct pnp_resource_table *table);
 381 int pnp_manual_config_dev(struct pnp_dev *dev, struct pnp_resource_table *res, int mode);
 382 int pnp_auto_config_dev(struct pnp_dev *dev);
 383 int pnp_validate_config(struct pnp_dev *dev);
 384 int pnp_activate_dev(struct pnp_dev *dev);
 385 int pnp_disable_dev(struct pnp_dev *dev);
 386 void pnp_resource_change(struct resource *resource, unsigned long start, unsigned long size);
 387
 388 /* protocol helpers */
 389 int pnp_is_active(struct pnp_dev * dev);
 390 int compare_pnp_id(struct pnp_id * pos, const char * id);
 391 int pnp_add_id(struct pnp_id *id, struct pnp_dev *dev);
 392 int pnp_register_driver(struct pnp_driver *drv);
 393 void pnp_unregister_driver(struct pnp_driver *drv);
 394
 395 #else
 396
 397 /* device management */
 398 static inline int pnp_register_protocol(struct pnp_protocol *protocol) { return -ENODEV; }
 399 static inline void pnp_unregister_protocol(struct pnp_protocol *protocol) { }
 400 static inline int pnp_init_device(struct pnp_dev *dev) { return -ENODEV; }
 401 static inline int pnp_add_device(struct pnp_dev *dev) { return -ENODEV; }
 402 static inline void pnp_remove_device(struct pnp_dev *dev) { }
 403 static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; }
 404 static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { ; }
 405
 406 /* multidevice card support */
 407 static inline int pnp_add_card(struct pnp_card *card) { return -ENODEV; }
 408 static inline void pnp_remove_card(struct pnp_card *card) { ; }
 409 static inline int pnp_add_card_device(struct pnp_card *card, struct pnp_dev *dev) { return -ENODEV; }
 410 static inline void pnp_remove_card_device(struct pnp_dev *dev) { ; }
 411 static inline int pnp_add_card_id(struct pnp_id *id, struct pnp_card *card) { return -ENODEV; }
 412 static inline struct pnp_dev * pnp_request_card_device(struct pnp_card_link *clink, const char * id, struct pnp_dev * from) { return NULL; }
 413 static inline void pnp_release_card_device(struct pnp_dev * dev) { ; }
 414 static inline int pnp_register_card_driver(struct pnp_card_driver * drv) { return -ENODEV; }
 415 static inline void pnp_unregister_card_driver(struct pnp_card_driver * drv) { ; }
 416
 417 /* resource management */
 418 static inline struct pnp_option * pnp_register_independent_option(struct pnp_dev *dev) { return NULL; }
 419 static inline struct pnp_option * pnp_register_dependent_option(struct pnp_dev *dev, int priority) { return NULL; }
 420 static inline int pnp_register_irq_resource(struct pnp_option *option, struct pnp_irq *data) { return -ENODEV; }
 421 static inline int pnp_register_dma_resource(struct pnp_option *option, struct pnp_dma *data) { return -ENODEV; }
 422 static inline int pnp_register_port_resource(struct pnp_option *option, struct pnp_port *data) { return -ENODEV; }
 423 static inline int pnp_register_mem_resource(struct pnp_option *option, struct pnp_mem *data) { return -ENODEV; }
 424 static inline void pnp_init_resource_table(struct pnp_resource_table *table) { }
 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 */