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1 | /* |
2 | * Linux Plug and Play Support |
3 | * Copyright by Adam Belay <ambx1@neo.rr.com> |
4 | * Copyright (C) 2008 Hewlett-Packard Development Company, L.P. |
5 | * Bjorn Helgaas <bjorn.helgaas@hp.com> |
6 | */ |
7 | |
8 | #ifndef _LINUX_PNP_H |
9 | #define _LINUX_PNP_H |
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_NAME_LEN 50 |
17 | |
18 | struct pnp_protocol; |
19 | struct pnp_dev; |
20 | |
21 | /* |
22 | * Resource Management |
23 | */ |
24 | #ifdef CONFIG_PNP |
25 | struct resource *pnp_get_resource(struct pnp_dev *dev, unsigned long type, |
26 | unsigned int num); |
27 | #else |
28 | static inline struct resource *pnp_get_resource(struct pnp_dev *dev, |
29 | unsigned long type, unsigned int num) |
30 | { |
31 | return NULL; |
32 | } |
33 | #endif |
34 | |
35 | static inline int pnp_resource_valid(struct resource *res) |
36 | { |
37 | if (res) |
38 | return 1; |
39 | return 0; |
40 | } |
41 | |
42 | static inline int pnp_resource_enabled(struct resource *res) |
43 | { |
44 | if (res && !(res->flags & IORESOURCE_DISABLED)) |
45 | return 1; |
46 | return 0; |
47 | } |
48 | |
49 | static inline resource_size_t pnp_resource_len(struct resource *res) |
50 | { |
51 | if (res->start == 0 && res->end == 0) |
52 | return 0; |
53 | return resource_size(res); |
54 | } |
55 | |
56 | |
57 | static inline resource_size_t pnp_port_start(struct pnp_dev *dev, |
58 | unsigned int bar) |
59 | { |
60 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar); |
61 | |
62 | if (pnp_resource_valid(res)) |
63 | return res->start; |
64 | return 0; |
65 | } |
66 | |
67 | static inline resource_size_t pnp_port_end(struct pnp_dev *dev, |
68 | unsigned int bar) |
69 | { |
70 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar); |
71 | |
72 | if (pnp_resource_valid(res)) |
73 | return res->end; |
74 | return 0; |
75 | } |
76 | |
77 | static inline unsigned long pnp_port_flags(struct pnp_dev *dev, |
78 | unsigned int bar) |
79 | { |
80 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar); |
81 | |
82 | if (pnp_resource_valid(res)) |
83 | return res->flags; |
84 | return IORESOURCE_IO | IORESOURCE_AUTO; |
85 | } |
86 | |
87 | static inline int pnp_port_valid(struct pnp_dev *dev, unsigned int bar) |
88 | { |
89 | return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IO, bar)); |
90 | } |
91 | |
92 | static inline resource_size_t pnp_port_len(struct pnp_dev *dev, |
93 | unsigned int bar) |
94 | { |
95 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IO, bar); |
96 | |
97 | if (pnp_resource_valid(res)) |
98 | return pnp_resource_len(res); |
99 | return 0; |
100 | } |
101 | |
102 | |
103 | static inline resource_size_t pnp_mem_start(struct pnp_dev *dev, |
104 | unsigned int bar) |
105 | { |
106 | struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar); |
107 | |
108 | if (pnp_resource_valid(res)) |
109 | return res->start; |
110 | return 0; |
111 | } |
112 | |
113 | static inline resource_size_t pnp_mem_end(struct pnp_dev *dev, |
114 | unsigned int bar) |
115 | { |
116 | struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar); |
117 | |
118 | if (pnp_resource_valid(res)) |
119 | return res->end; |
120 | return 0; |
121 | } |
122 | |
123 | static inline unsigned long pnp_mem_flags(struct pnp_dev *dev, unsigned int bar) |
124 | { |
125 | struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar); |
126 | |
127 | if (pnp_resource_valid(res)) |
128 | return res->flags; |
129 | return IORESOURCE_MEM | IORESOURCE_AUTO; |
130 | } |
131 | |
132 | static inline int pnp_mem_valid(struct pnp_dev *dev, unsigned int bar) |
133 | { |
134 | return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_MEM, bar)); |
135 | } |
136 | |
137 | static inline resource_size_t pnp_mem_len(struct pnp_dev *dev, |
138 | unsigned int bar) |
139 | { |
140 | struct resource *res = pnp_get_resource(dev, IORESOURCE_MEM, bar); |
141 | |
142 | if (pnp_resource_valid(res)) |
143 | return pnp_resource_len(res); |
144 | return 0; |
145 | } |
146 | |
147 | |
148 | static inline resource_size_t pnp_irq(struct pnp_dev *dev, unsigned int bar) |
149 | { |
150 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar); |
151 | |
152 | if (pnp_resource_valid(res)) |
153 | return res->start; |
154 | return -1; |
155 | } |
156 | |
157 | static inline unsigned long pnp_irq_flags(struct pnp_dev *dev, unsigned int bar) |
158 | { |
159 | struct resource *res = pnp_get_resource(dev, IORESOURCE_IRQ, bar); |
160 | |
161 | if (pnp_resource_valid(res)) |
162 | return res->flags; |
163 | return IORESOURCE_IRQ | IORESOURCE_AUTO; |
164 | } |
165 | |
166 | static inline int pnp_irq_valid(struct pnp_dev *dev, unsigned int bar) |
167 | { |
168 | return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_IRQ, bar)); |
169 | } |
170 | |
171 | |
172 | static inline resource_size_t pnp_dma(struct pnp_dev *dev, unsigned int bar) |
173 | { |
174 | struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar); |
175 | |
176 | if (pnp_resource_valid(res)) |
177 | return res->start; |
178 | return -1; |
179 | } |
180 | |
181 | static inline unsigned long pnp_dma_flags(struct pnp_dev *dev, unsigned int bar) |
182 | { |
183 | struct resource *res = pnp_get_resource(dev, IORESOURCE_DMA, bar); |
184 | |
185 | if (pnp_resource_valid(res)) |
186 | return res->flags; |
187 | return IORESOURCE_DMA | IORESOURCE_AUTO; |
188 | } |
189 | |
190 | static inline int pnp_dma_valid(struct pnp_dev *dev, unsigned int bar) |
191 | { |
192 | return pnp_resource_valid(pnp_get_resource(dev, IORESOURCE_DMA, bar)); |
193 | } |
194 | |
195 | |
196 | /* |
197 | * Device Management |
198 | */ |
199 | |
200 | struct pnp_card { |
201 | struct device dev; /* Driver Model device interface */ |
202 | unsigned char number; /* used as an index, must be unique */ |
203 | struct list_head global_list; /* node in global list of cards */ |
204 | struct list_head protocol_list; /* node in protocol's list of cards */ |
205 | struct list_head devices; /* devices attached to the card */ |
206 | |
207 | struct pnp_protocol *protocol; |
208 | struct pnp_id *id; /* contains supported EISA IDs */ |
209 | |
210 | char name[PNP_NAME_LEN]; /* contains a human-readable name */ |
211 | unsigned char pnpver; /* Plug & Play version */ |
212 | unsigned char productver; /* product version */ |
213 | unsigned int serial; /* serial number */ |
214 | unsigned char checksum; /* if zero - checksum passed */ |
215 | struct proc_dir_entry *procdir; /* directory entry in /proc/bus/isapnp */ |
216 | }; |
217 | |
218 | #define global_to_pnp_card(n) list_entry(n, struct pnp_card, global_list) |
219 | #define protocol_to_pnp_card(n) list_entry(n, struct pnp_card, protocol_list) |
220 | #define to_pnp_card(n) container_of(n, struct pnp_card, dev) |
221 | #define pnp_for_each_card(card) \ |
222 | for((card) = global_to_pnp_card(pnp_cards.next); \ |
223 | (card) != global_to_pnp_card(&pnp_cards); \ |
224 | (card) = global_to_pnp_card((card)->global_list.next)) |
225 | |
226 | struct pnp_card_link { |
227 | struct pnp_card *card; |
228 | struct pnp_card_driver *driver; |
229 | void *driver_data; |
230 | pm_message_t pm_state; |
231 | }; |
232 | |
233 | static inline void *pnp_get_card_drvdata(struct pnp_card_link *pcard) |
234 | { |
235 | return pcard->driver_data; |
236 | } |
237 | |
238 | static inline void pnp_set_card_drvdata(struct pnp_card_link *pcard, void *data) |
239 | { |
240 | pcard->driver_data = data; |
241 | } |
242 | |
243 | struct pnp_dev { |
244 | struct device dev; /* Driver Model device interface */ |
245 | u64 dma_mask; |
246 | unsigned int number; /* used as an index, must be unique */ |
247 | int status; |
248 | |
249 | struct list_head global_list; /* node in global list of devices */ |
250 | struct list_head protocol_list; /* node in list of device's protocol */ |
251 | struct list_head card_list; /* node in card's list of devices */ |
252 | struct list_head rdev_list; /* node in cards list of requested devices */ |
253 | |
254 | struct pnp_protocol *protocol; |
255 | struct pnp_card *card; /* card the device is attached to, none if NULL */ |
256 | struct pnp_driver *driver; |
257 | struct pnp_card_link *card_link; |
258 | |
259 | struct pnp_id *id; /* supported EISA IDs */ |
260 | |
261 | int active; |
262 | int capabilities; |
263 | unsigned int num_dependent_sets; |
264 | struct list_head resources; |
265 | struct list_head options; |
266 | |
267 | char name[PNP_NAME_LEN]; /* contains a human-readable name */ |
268 | int flags; /* used by protocols */ |
269 | struct proc_dir_entry *procent; /* device entry in /proc/bus/isapnp */ |
270 | void *data; |
271 | }; |
272 | |
273 | #define global_to_pnp_dev(n) list_entry(n, struct pnp_dev, global_list) |
274 | #define card_to_pnp_dev(n) list_entry(n, struct pnp_dev, card_list) |
275 | #define protocol_to_pnp_dev(n) list_entry(n, struct pnp_dev, protocol_list) |
276 | #define to_pnp_dev(n) container_of(n, struct pnp_dev, dev) |
277 | #define pnp_for_each_dev(dev) \ |
278 | for((dev) = global_to_pnp_dev(pnp_global.next); \ |
279 | (dev) != global_to_pnp_dev(&pnp_global); \ |
280 | (dev) = global_to_pnp_dev((dev)->global_list.next)) |
281 | #define card_for_each_dev(card,dev) \ |
282 | for((dev) = card_to_pnp_dev((card)->devices.next); \ |
283 | (dev) != card_to_pnp_dev(&(card)->devices); \ |
284 | (dev) = card_to_pnp_dev((dev)->card_list.next)) |
285 | #define pnp_dev_name(dev) (dev)->name |
286 | |
287 | static inline void *pnp_get_drvdata(struct pnp_dev *pdev) |
288 | { |
289 | return dev_get_drvdata(&pdev->dev); |
290 | } |
291 | |
292 | static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data) |
293 | { |
294 | dev_set_drvdata(&pdev->dev, data); |
295 | } |
296 | |
297 | struct pnp_fixup { |
298 | char id[7]; |
299 | void (*quirk_function) (struct pnp_dev * dev); /* fixup function */ |
300 | }; |
301 | |
302 | /* config parameters */ |
303 | #define PNP_CONFIG_NORMAL 0x0001 |
304 | #define PNP_CONFIG_FORCE 0x0002 /* disables validity checking */ |
305 | |
306 | /* capabilities */ |
307 | #define PNP_READ 0x0001 |
308 | #define PNP_WRITE 0x0002 |
309 | #define PNP_DISABLE 0x0004 |
310 | #define PNP_CONFIGURABLE 0x0008 |
311 | #define PNP_REMOVABLE 0x0010 |
312 | |
313 | #define pnp_can_read(dev) (((dev)->protocol->get) && \ |
314 | ((dev)->capabilities & PNP_READ)) |
315 | #define pnp_can_write(dev) (((dev)->protocol->set) && \ |
316 | ((dev)->capabilities & PNP_WRITE)) |
317 | #define pnp_can_disable(dev) (((dev)->protocol->disable) && \ |
318 | ((dev)->capabilities & PNP_DISABLE)) |
319 | #define pnp_can_configure(dev) ((!(dev)->active) && \ |
320 | ((dev)->capabilities & PNP_CONFIGURABLE)) |
321 | |
322 | #ifdef CONFIG_ISAPNP |
323 | extern struct pnp_protocol isapnp_protocol; |
324 | #define pnp_device_is_isapnp(dev) ((dev)->protocol == (&isapnp_protocol)) |
325 | #else |
326 | #define pnp_device_is_isapnp(dev) 0 |
327 | #endif |
328 | extern struct mutex pnp_res_mutex; |
329 | |
330 | #ifdef CONFIG_PNPBIOS |
331 | extern struct pnp_protocol pnpbios_protocol; |
332 | #define pnp_device_is_pnpbios(dev) ((dev)->protocol == (&pnpbios_protocol)) |
333 | #else |
334 | #define pnp_device_is_pnpbios(dev) 0 |
335 | #endif |
336 | |
337 | #ifdef CONFIG_PNPACPI |
338 | extern struct pnp_protocol pnpacpi_protocol; |
339 | |
340 | static inline struct acpi_device *pnp_acpi_device(struct pnp_dev *dev) |
341 | { |
342 | if (dev->protocol == &pnpacpi_protocol) |
343 | return dev->data; |
344 | return NULL; |
345 | } |
346 | #else |
347 | #define pnp_acpi_device(dev) 0 |
348 | #endif |
349 | |
350 | /* status */ |
351 | #define PNP_READY 0x0000 |
352 | #define PNP_ATTACHED 0x0001 |
353 | #define PNP_BUSY 0x0002 |
354 | #define PNP_FAULTY 0x0004 |
355 | |
356 | /* isapnp specific macros */ |
357 | |
358 | #define isapnp_card_number(dev) ((dev)->card ? (dev)->card->number : -1) |
359 | #define isapnp_csn_number(dev) ((dev)->number) |
360 | |
361 | /* |
362 | * Driver Management |
363 | */ |
364 | |
365 | struct pnp_id { |
366 | char id[PNP_ID_LEN]; |
367 | struct pnp_id *next; |
368 | }; |
369 | |
370 | struct pnp_driver { |
371 | char *name; |
372 | const struct pnp_device_id *id_table; |
373 | unsigned int flags; |
374 | int (*probe) (struct pnp_dev *dev, const struct pnp_device_id *dev_id); |
375 | void (*remove) (struct pnp_dev *dev); |
376 | void (*shutdown) (struct pnp_dev *dev); |
377 | int (*suspend) (struct pnp_dev *dev, pm_message_t state); |
378 | int (*resume) (struct pnp_dev *dev); |
379 | struct device_driver driver; |
380 | }; |
381 | |
382 | #define to_pnp_driver(drv) container_of(drv, struct pnp_driver, driver) |
383 | |
384 | struct pnp_card_driver { |
385 | struct list_head global_list; |
386 | char *name; |
387 | const struct pnp_card_device_id *id_table; |
388 | unsigned int flags; |
389 | int (*probe) (struct pnp_card_link *card, |
390 | const struct pnp_card_device_id *card_id); |
391 | void (*remove) (struct pnp_card_link *card); |
392 | int (*suspend) (struct pnp_card_link *card, pm_message_t state); |
393 | int (*resume) (struct pnp_card_link *card); |
394 | struct pnp_driver link; |
395 | }; |
396 | |
397 | #define to_pnp_card_driver(drv) container_of(drv, struct pnp_card_driver, link) |
398 | |
399 | /* pnp driver flags */ |
400 | #define PNP_DRIVER_RES_DO_NOT_CHANGE 0x0001 /* do not change the state of the device */ |
401 | #define PNP_DRIVER_RES_DISABLE 0x0003 /* ensure the device is disabled */ |
402 | |
403 | /* |
404 | * Protocol Management |
405 | */ |
406 | |
407 | struct pnp_protocol { |
408 | struct list_head protocol_list; |
409 | char *name; |
410 | |
411 | /* resource control functions */ |
412 | int (*get) (struct pnp_dev *dev); |
413 | int (*set) (struct pnp_dev *dev); |
414 | int (*disable) (struct pnp_dev *dev); |
415 | |
416 | /* protocol specific suspend/resume */ |
417 | bool (*can_wakeup) (struct pnp_dev *dev); |
418 | int (*suspend) (struct pnp_dev * dev, pm_message_t state); |
419 | int (*resume) (struct pnp_dev * dev); |
420 | |
421 | /* used by pnp layer only (look but don't touch) */ |
422 | unsigned char number; /* protocol number */ |
423 | struct device dev; /* link to driver model */ |
424 | struct list_head cards; |
425 | struct list_head devices; |
426 | }; |
427 | |
428 | #define to_pnp_protocol(n) list_entry(n, struct pnp_protocol, protocol_list) |
429 | #define protocol_for_each_card(protocol,card) \ |
430 | for((card) = protocol_to_pnp_card((protocol)->cards.next); \ |
431 | (card) != protocol_to_pnp_card(&(protocol)->cards); \ |
432 | (card) = protocol_to_pnp_card((card)->protocol_list.next)) |
433 | #define protocol_for_each_dev(protocol,dev) \ |
434 | for((dev) = protocol_to_pnp_dev((protocol)->devices.next); \ |
435 | (dev) != protocol_to_pnp_dev(&(protocol)->devices); \ |
436 | (dev) = protocol_to_pnp_dev((dev)->protocol_list.next)) |
437 | |
438 | extern struct bus_type pnp_bus_type; |
439 | |
440 | #if defined(CONFIG_PNP) |
441 | |
442 | /* device management */ |
443 | int pnp_device_attach(struct pnp_dev *pnp_dev); |
444 | void pnp_device_detach(struct pnp_dev *pnp_dev); |
445 | extern struct list_head pnp_global; |
446 | extern int pnp_platform_devices; |
447 | |
448 | /* multidevice card support */ |
449 | struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, |
450 | const char *id, struct pnp_dev *from); |
451 | void pnp_release_card_device(struct pnp_dev *dev); |
452 | int pnp_register_card_driver(struct pnp_card_driver *drv); |
453 | void pnp_unregister_card_driver(struct pnp_card_driver *drv); |
454 | extern struct list_head pnp_cards; |
455 | |
456 | /* resource management */ |
457 | int pnp_possible_config(struct pnp_dev *dev, int type, resource_size_t base, |
458 | resource_size_t size); |
459 | int pnp_auto_config_dev(struct pnp_dev *dev); |
460 | int pnp_start_dev(struct pnp_dev *dev); |
461 | int pnp_stop_dev(struct pnp_dev *dev); |
462 | int pnp_activate_dev(struct pnp_dev *dev); |
463 | int pnp_disable_dev(struct pnp_dev *dev); |
464 | int pnp_range_reserved(resource_size_t start, resource_size_t end); |
465 | |
466 | /* protocol helpers */ |
467 | int pnp_is_active(struct pnp_dev *dev); |
468 | int compare_pnp_id(struct pnp_id *pos, const char *id); |
469 | int pnp_register_driver(struct pnp_driver *drv); |
470 | void pnp_unregister_driver(struct pnp_driver *drv); |
471 | |
472 | #else |
473 | |
474 | /* device management */ |
475 | static inline int pnp_device_attach(struct pnp_dev *pnp_dev) { return -ENODEV; } |
476 | static inline void pnp_device_detach(struct pnp_dev *pnp_dev) { } |
477 | |
478 | #define pnp_platform_devices 0 |
479 | |
480 | /* multidevice card support */ |
481 | static inline struct pnp_dev *pnp_request_card_device(struct pnp_card_link *clink, const char *id, struct pnp_dev *from) { return NULL; } |
482 | static inline void pnp_release_card_device(struct pnp_dev *dev) { } |
483 | static inline int pnp_register_card_driver(struct pnp_card_driver *drv) { return -ENODEV; } |
484 | static inline void pnp_unregister_card_driver(struct pnp_card_driver *drv) { } |
485 | |
486 | /* resource management */ |
487 | static inline int pnp_possible_config(struct pnp_dev *dev, int type, |
488 | resource_size_t base, |
489 | resource_size_t size) { return 0; } |
490 | static inline int pnp_auto_config_dev(struct pnp_dev *dev) { return -ENODEV; } |
491 | static inline int pnp_start_dev(struct pnp_dev *dev) { return -ENODEV; } |
492 | static inline int pnp_stop_dev(struct pnp_dev *dev) { return -ENODEV; } |
493 | static inline int pnp_activate_dev(struct pnp_dev *dev) { return -ENODEV; } |
494 | static inline int pnp_disable_dev(struct pnp_dev *dev) { return -ENODEV; } |
495 | static inline int pnp_range_reserved(resource_size_t start, resource_size_t end) { return 0;} |
496 | |
497 | /* protocol helpers */ |
498 | static inline int pnp_is_active(struct pnp_dev *dev) { return 0; } |
499 | static inline int compare_pnp_id(struct pnp_id *pos, const char *id) { return -ENODEV; } |
500 | static inline int pnp_register_driver(struct pnp_driver *drv) { return -ENODEV; } |
501 | static inline void pnp_unregister_driver(struct pnp_driver *drv) { } |
502 | |
503 | #endif /* CONFIG_PNP */ |
504 | |
505 | #endif /* _LINUX_PNP_H */ |
506 |
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