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70a50ebd MP |
1 | /* |
2 | * RapidIO driver services | |
3 | * | |
4 | * Copyright 2005 MontaVista Software, Inc. | |
5 | * Matt Porter <mporter@kernel.crashing.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef LINUX_RIO_DRV_H | |
14 | #define LINUX_RIO_DRV_H | |
15 | ||
70a50ebd | 16 | #include <linux/types.h> |
70a50ebd MP |
17 | #include <linux/ioport.h> |
18 | #include <linux/list.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/device.h> | |
de25968c | 21 | #include <linux/string.h> |
70a50ebd MP |
22 | #include <linux/rio.h> |
23 | ||
24 | extern int __rio_local_read_config_32(struct rio_mport *port, u32 offset, | |
25 | u32 * data); | |
26 | extern int __rio_local_write_config_32(struct rio_mport *port, u32 offset, | |
27 | u32 data); | |
28 | extern int __rio_local_read_config_16(struct rio_mport *port, u32 offset, | |
29 | u16 * data); | |
30 | extern int __rio_local_write_config_16(struct rio_mport *port, u32 offset, | |
31 | u16 data); | |
32 | extern int __rio_local_read_config_8(struct rio_mport *port, u32 offset, | |
33 | u8 * data); | |
34 | extern int __rio_local_write_config_8(struct rio_mport *port, u32 offset, | |
35 | u8 data); | |
36 | ||
37 | extern int rio_mport_read_config_32(struct rio_mport *port, u16 destid, | |
38 | u8 hopcount, u32 offset, u32 * data); | |
39 | extern int rio_mport_write_config_32(struct rio_mport *port, u16 destid, | |
40 | u8 hopcount, u32 offset, u32 data); | |
41 | extern int rio_mport_read_config_16(struct rio_mport *port, u16 destid, | |
42 | u8 hopcount, u32 offset, u16 * data); | |
43 | extern int rio_mport_write_config_16(struct rio_mport *port, u16 destid, | |
44 | u8 hopcount, u32 offset, u16 data); | |
45 | extern int rio_mport_read_config_8(struct rio_mport *port, u16 destid, | |
46 | u8 hopcount, u32 offset, u8 * data); | |
47 | extern int rio_mport_write_config_8(struct rio_mport *port, u16 destid, | |
48 | u8 hopcount, u32 offset, u8 data); | |
49 | ||
50 | /** | |
51 | * rio_local_read_config_32 - Read 32 bits from local configuration space | |
52 | * @port: Master port | |
53 | * @offset: Offset into local configuration space | |
54 | * @data: Pointer to read data into | |
55 | * | |
56 | * Reads 32 bits of data from the specified offset within the local | |
57 | * device's configuration space. | |
58 | */ | |
59 | static inline int rio_local_read_config_32(struct rio_mport *port, u32 offset, | |
60 | u32 * data) | |
61 | { | |
62 | return __rio_local_read_config_32(port, offset, data); | |
63 | } | |
64 | ||
65 | /** | |
66 | * rio_local_write_config_32 - Write 32 bits to local configuration space | |
67 | * @port: Master port | |
68 | * @offset: Offset into local configuration space | |
69 | * @data: Data to be written | |
70 | * | |
71 | * Writes 32 bits of data to the specified offset within the local | |
72 | * device's configuration space. | |
73 | */ | |
74 | static inline int rio_local_write_config_32(struct rio_mport *port, u32 offset, | |
75 | u32 data) | |
76 | { | |
77 | return __rio_local_write_config_32(port, offset, data); | |
78 | } | |
79 | ||
80 | /** | |
81 | * rio_local_read_config_16 - Read 16 bits from local configuration space | |
82 | * @port: Master port | |
83 | * @offset: Offset into local configuration space | |
84 | * @data: Pointer to read data into | |
85 | * | |
86 | * Reads 16 bits of data from the specified offset within the local | |
87 | * device's configuration space. | |
88 | */ | |
89 | static inline int rio_local_read_config_16(struct rio_mport *port, u32 offset, | |
90 | u16 * data) | |
91 | { | |
92 | return __rio_local_read_config_16(port, offset, data); | |
93 | } | |
94 | ||
95 | /** | |
96 | * rio_local_write_config_16 - Write 16 bits to local configuration space | |
97 | * @port: Master port | |
98 | * @offset: Offset into local configuration space | |
99 | * @data: Data to be written | |
100 | * | |
101 | * Writes 16 bits of data to the specified offset within the local | |
102 | * device's configuration space. | |
103 | */ | |
104 | ||
105 | static inline int rio_local_write_config_16(struct rio_mport *port, u32 offset, | |
106 | u16 data) | |
107 | { | |
108 | return __rio_local_write_config_16(port, offset, data); | |
109 | } | |
110 | ||
111 | /** | |
112 | * rio_local_read_config_8 - Read 8 bits from local configuration space | |
113 | * @port: Master port | |
114 | * @offset: Offset into local configuration space | |
115 | * @data: Pointer to read data into | |
116 | * | |
117 | * Reads 8 bits of data from the specified offset within the local | |
118 | * device's configuration space. | |
119 | */ | |
120 | static inline int rio_local_read_config_8(struct rio_mport *port, u32 offset, | |
121 | u8 * data) | |
122 | { | |
123 | return __rio_local_read_config_8(port, offset, data); | |
124 | } | |
125 | ||
126 | /** | |
127 | * rio_local_write_config_8 - Write 8 bits to local configuration space | |
128 | * @port: Master port | |
129 | * @offset: Offset into local configuration space | |
130 | * @data: Data to be written | |
131 | * | |
132 | * Writes 8 bits of data to the specified offset within the local | |
133 | * device's configuration space. | |
134 | */ | |
135 | static inline int rio_local_write_config_8(struct rio_mport *port, u32 offset, | |
136 | u8 data) | |
137 | { | |
138 | return __rio_local_write_config_8(port, offset, data); | |
139 | } | |
140 | ||
141 | /** | |
142 | * rio_read_config_32 - Read 32 bits from configuration space | |
143 | * @rdev: RIO device | |
144 | * @offset: Offset into device configuration space | |
145 | * @data: Pointer to read data into | |
146 | * | |
147 | * Reads 32 bits of data from the specified offset within the | |
148 | * RIO device's configuration space. | |
149 | */ | |
150 | static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset, | |
151 | u32 * data) | |
152 | { | |
153 | u8 hopcount = 0xff; | |
154 | u16 destid = rdev->destid; | |
155 | ||
156 | if (rdev->rswitch) { | |
157 | destid = rdev->rswitch->destid; | |
158 | hopcount = rdev->rswitch->hopcount; | |
159 | } | |
160 | ||
161 | return rio_mport_read_config_32(rdev->net->hport, destid, hopcount, | |
162 | offset, data); | |
163 | }; | |
164 | ||
165 | /** | |
166 | * rio_write_config_32 - Write 32 bits to configuration space | |
167 | * @rdev: RIO device | |
168 | * @offset: Offset into device configuration space | |
169 | * @data: Data to be written | |
170 | * | |
171 | * Writes 32 bits of data to the specified offset within the | |
172 | * RIO device's configuration space. | |
173 | */ | |
174 | static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset, | |
175 | u32 data) | |
176 | { | |
177 | u8 hopcount = 0xff; | |
178 | u16 destid = rdev->destid; | |
179 | ||
180 | if (rdev->rswitch) { | |
181 | destid = rdev->rswitch->destid; | |
182 | hopcount = rdev->rswitch->hopcount; | |
183 | } | |
184 | ||
185 | return rio_mport_write_config_32(rdev->net->hport, destid, hopcount, | |
186 | offset, data); | |
187 | }; | |
188 | ||
189 | /** | |
190 | * rio_read_config_16 - Read 16 bits from configuration space | |
191 | * @rdev: RIO device | |
192 | * @offset: Offset into device configuration space | |
193 | * @data: Pointer to read data into | |
194 | * | |
195 | * Reads 16 bits of data from the specified offset within the | |
196 | * RIO device's configuration space. | |
197 | */ | |
198 | static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset, | |
199 | u16 * data) | |
200 | { | |
201 | u8 hopcount = 0xff; | |
202 | u16 destid = rdev->destid; | |
203 | ||
204 | if (rdev->rswitch) { | |
205 | destid = rdev->rswitch->destid; | |
206 | hopcount = rdev->rswitch->hopcount; | |
207 | } | |
208 | ||
209 | return rio_mport_read_config_16(rdev->net->hport, destid, hopcount, | |
210 | offset, data); | |
211 | }; | |
212 | ||
213 | /** | |
214 | * rio_write_config_16 - Write 16 bits to configuration space | |
215 | * @rdev: RIO device | |
216 | * @offset: Offset into device configuration space | |
217 | * @data: Data to be written | |
218 | * | |
219 | * Writes 16 bits of data to the specified offset within the | |
220 | * RIO device's configuration space. | |
221 | */ | |
222 | static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset, | |
223 | u16 data) | |
224 | { | |
225 | u8 hopcount = 0xff; | |
226 | u16 destid = rdev->destid; | |
227 | ||
228 | if (rdev->rswitch) { | |
229 | destid = rdev->rswitch->destid; | |
230 | hopcount = rdev->rswitch->hopcount; | |
231 | } | |
232 | ||
233 | return rio_mport_write_config_16(rdev->net->hport, destid, hopcount, | |
234 | offset, data); | |
235 | }; | |
236 | ||
237 | /** | |
238 | * rio_read_config_8 - Read 8 bits from configuration space | |
239 | * @rdev: RIO device | |
240 | * @offset: Offset into device configuration space | |
241 | * @data: Pointer to read data into | |
242 | * | |
243 | * Reads 8 bits of data from the specified offset within the | |
244 | * RIO device's configuration space. | |
245 | */ | |
246 | static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data) | |
247 | { | |
248 | u8 hopcount = 0xff; | |
249 | u16 destid = rdev->destid; | |
250 | ||
251 | if (rdev->rswitch) { | |
252 | destid = rdev->rswitch->destid; | |
253 | hopcount = rdev->rswitch->hopcount; | |
254 | } | |
255 | ||
256 | return rio_mport_read_config_8(rdev->net->hport, destid, hopcount, | |
257 | offset, data); | |
258 | }; | |
259 | ||
260 | /** | |
261 | * rio_write_config_8 - Write 8 bits to configuration space | |
262 | * @rdev: RIO device | |
263 | * @offset: Offset into device configuration space | |
264 | * @data: Data to be written | |
265 | * | |
266 | * Writes 8 bits of data to the specified offset within the | |
267 | * RIO device's configuration space. | |
268 | */ | |
269 | static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data) | |
270 | { | |
271 | u8 hopcount = 0xff; | |
272 | u16 destid = rdev->destid; | |
273 | ||
274 | if (rdev->rswitch) { | |
275 | destid = rdev->rswitch->destid; | |
276 | hopcount = rdev->rswitch->hopcount; | |
277 | } | |
278 | ||
279 | return rio_mport_write_config_8(rdev->net->hport, destid, hopcount, | |
280 | offset, data); | |
281 | }; | |
282 | ||
283 | extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, | |
284 | u16 data); | |
285 | ||
286 | /** | |
287 | * rio_send_doorbell - Send a doorbell message to a device | |
288 | * @rdev: RIO device | |
289 | * @data: Doorbell message data | |
290 | * | |
291 | * Send a doorbell message to a RIO device. The doorbell message | |
292 | * has a 16-bit info field provided by the @data argument. | |
293 | */ | |
294 | static inline int rio_send_doorbell(struct rio_dev *rdev, u16 data) | |
295 | { | |
296 | return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data); | |
297 | }; | |
298 | ||
299 | /** | |
300 | * rio_init_mbox_res - Initialize a RIO mailbox resource | |
301 | * @res: resource struct | |
302 | * @start: start of mailbox range | |
303 | * @end: end of mailbox range | |
304 | * | |
305 | * This function is used to initialize the fields of a resource | |
306 | * for use as a mailbox resource. It initializes a range of | |
307 | * mailboxes using the start and end arguments. | |
308 | */ | |
309 | static inline void rio_init_mbox_res(struct resource *res, int start, int end) | |
310 | { | |
311 | memset(res, 0, sizeof(struct resource)); | |
312 | res->start = start; | |
313 | res->end = end; | |
314 | res->flags = RIO_RESOURCE_MAILBOX; | |
315 | } | |
316 | ||
317 | /** | |
318 | * rio_init_dbell_res - Initialize a RIO doorbell resource | |
319 | * @res: resource struct | |
320 | * @start: start of doorbell range | |
321 | * @end: end of doorbell range | |
322 | * | |
323 | * This function is used to initialize the fields of a resource | |
324 | * for use as a doorbell resource. It initializes a range of | |
325 | * doorbell messages using the start and end arguments. | |
326 | */ | |
327 | static inline void rio_init_dbell_res(struct resource *res, u16 start, u16 end) | |
328 | { | |
329 | memset(res, 0, sizeof(struct resource)); | |
330 | res->start = start; | |
331 | res->end = end; | |
332 | res->flags = RIO_RESOURCE_DOORBELL; | |
333 | } | |
334 | ||
335 | /** | |
336 | * RIO_DEVICE - macro used to describe a specific RIO device | |
0863afb3 MW |
337 | * @dev: the 16 bit RIO device ID |
338 | * @ven: the 16 bit RIO vendor ID | |
70a50ebd MP |
339 | * |
340 | * This macro is used to create a struct rio_device_id that matches a | |
341 | * specific device. The assembly vendor and assembly device fields | |
342 | * will be set to %RIO_ANY_ID. | |
343 | */ | |
344 | #define RIO_DEVICE(dev,ven) \ | |
345 | .did = (dev), .vid = (ven), \ | |
346 | .asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID | |
347 | ||
348 | /* Mailbox management */ | |
6978bbc0 MP |
349 | extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int, |
350 | void (*)(struct rio_mport *, void *,int, int)); | |
70a50ebd MP |
351 | extern int rio_release_outb_mbox(struct rio_mport *, int); |
352 | ||
353 | /** | |
354 | * rio_add_outb_message - Add RIO message to an outbound mailbox queue | |
355 | * @mport: RIO master port containing the outbound queue | |
356 | * @rdev: RIO device the message is be sent to | |
357 | * @mbox: The outbound mailbox queue | |
358 | * @buffer: Pointer to the message buffer | |
359 | * @len: Length of the message buffer | |
360 | * | |
361 | * Adds a RIO message buffer to an outbound mailbox queue for | |
362 | * transmission. Returns 0 on success. | |
363 | */ | |
364 | static inline int rio_add_outb_message(struct rio_mport *mport, | |
365 | struct rio_dev *rdev, int mbox, | |
366 | void *buffer, size_t len) | |
367 | { | |
368 | return rio_hw_add_outb_message(mport, rdev, mbox, buffer, len); | |
369 | } | |
370 | ||
6978bbc0 MP |
371 | extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int, |
372 | void (*)(struct rio_mport *, void *, int, int)); | |
70a50ebd MP |
373 | extern int rio_release_inb_mbox(struct rio_mport *, int); |
374 | ||
375 | /** | |
376 | * rio_add_inb_buffer - Add buffer to an inbound mailbox queue | |
377 | * @mport: Master port containing the inbound mailbox | |
378 | * @mbox: The inbound mailbox number | |
379 | * @buffer: Pointer to the message buffer | |
380 | * | |
381 | * Adds a buffer to an inbound mailbox queue for reception. Returns | |
382 | * 0 on success. | |
383 | */ | |
384 | static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox, | |
385 | void *buffer) | |
386 | { | |
387 | return rio_hw_add_inb_buffer(mport, mbox, buffer); | |
388 | } | |
389 | ||
390 | /** | |
391 | * rio_get_inb_message - Get A RIO message from an inbound mailbox queue | |
392 | * @mport: Master port containing the inbound mailbox | |
393 | * @mbox: The inbound mailbox number | |
70a50ebd MP |
394 | * |
395 | * Get a RIO message from an inbound mailbox queue. Returns 0 on success. | |
396 | */ | |
397 | static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox) | |
398 | { | |
399 | return rio_hw_get_inb_message(mport, mbox); | |
400 | } | |
401 | ||
402 | /* Doorbell management */ | |
6978bbc0 MP |
403 | extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16, |
404 | void (*)(struct rio_mport *, void *, u16, u16, u16)); | |
70a50ebd MP |
405 | extern int rio_release_inb_dbell(struct rio_mport *, u16, u16); |
406 | extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16); | |
407 | extern int rio_release_outb_dbell(struct rio_dev *, struct resource *); | |
408 | ||
409 | /* Memory region management */ | |
410 | int rio_claim_resource(struct rio_dev *, int); | |
411 | int rio_request_regions(struct rio_dev *, char *); | |
412 | void rio_release_regions(struct rio_dev *); | |
413 | int rio_request_region(struct rio_dev *, int, char *); | |
414 | void rio_release_region(struct rio_dev *, int); | |
415 | ||
416 | /* LDM support */ | |
417 | int rio_register_driver(struct rio_driver *); | |
418 | void rio_unregister_driver(struct rio_driver *); | |
419 | struct rio_dev *rio_dev_get(struct rio_dev *); | |
420 | void rio_dev_put(struct rio_dev *); | |
421 | ||
422 | /** | |
423 | * rio_name - Get the unique RIO device identifier | |
424 | * @rdev: RIO device | |
425 | * | |
426 | * Get the unique RIO device identifier. Returns the device | |
427 | * identifier string. | |
428 | */ | |
b53c7583 | 429 | static inline const char *rio_name(struct rio_dev *rdev) |
70a50ebd | 430 | { |
b53c7583 | 431 | return dev_name(&rdev->dev); |
70a50ebd MP |
432 | } |
433 | ||
434 | /** | |
435 | * rio_get_drvdata - Get RIO driver specific data | |
436 | * @rdev: RIO device | |
437 | * | |
438 | * Get RIO driver specific data. Returns a pointer to the | |
439 | * driver specific data. | |
440 | */ | |
441 | static inline void *rio_get_drvdata(struct rio_dev *rdev) | |
442 | { | |
443 | return dev_get_drvdata(&rdev->dev); | |
444 | } | |
445 | ||
446 | /** | |
447 | * rio_set_drvdata - Set RIO driver specific data | |
448 | * @rdev: RIO device | |
449 | * @data: Pointer to driver specific data | |
450 | * | |
451 | * Set RIO driver specific data. device struct driver data pointer | |
452 | * is set to the @data argument. | |
453 | */ | |
454 | static inline void rio_set_drvdata(struct rio_dev *rdev, void *data) | |
455 | { | |
456 | dev_set_drvdata(&rdev->dev, data); | |
457 | } | |
458 | ||
459 | /* Misc driver helpers */ | |
460 | extern u16 rio_local_get_device_id(struct rio_mport *port); | |
461 | extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from); | |
462 | extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did, | |
463 | struct rio_dev *from); | |
464 | ||
70a50ebd | 465 | #endif /* LINUX_RIO_DRV_H */ |