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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 | |
16 | #include <linux/types.h> |
17 | #include <linux/ioport.h> |
18 | #include <linux/list.h> |
19 | #include <linux/errno.h> |
20 | #include <linux/device.h> |
21 | #include <linux/string.h> |
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 | return rio_mport_read_config_32(rdev->net->hport, rdev->destid, |
154 | rdev->hopcount, offset, data); |
155 | }; |
156 | |
157 | /** |
158 | * rio_write_config_32 - Write 32 bits to configuration space |
159 | * @rdev: RIO device |
160 | * @offset: Offset into device configuration space |
161 | * @data: Data to be written |
162 | * |
163 | * Writes 32 bits of data to the specified offset within the |
164 | * RIO device's configuration space. |
165 | */ |
166 | static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset, |
167 | u32 data) |
168 | { |
169 | return rio_mport_write_config_32(rdev->net->hport, rdev->destid, |
170 | rdev->hopcount, offset, data); |
171 | }; |
172 | |
173 | /** |
174 | * rio_read_config_16 - Read 16 bits from configuration space |
175 | * @rdev: RIO device |
176 | * @offset: Offset into device configuration space |
177 | * @data: Pointer to read data into |
178 | * |
179 | * Reads 16 bits of data from the specified offset within the |
180 | * RIO device's configuration space. |
181 | */ |
182 | static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset, |
183 | u16 * data) |
184 | { |
185 | return rio_mport_read_config_16(rdev->net->hport, rdev->destid, |
186 | rdev->hopcount, offset, data); |
187 | }; |
188 | |
189 | /** |
190 | * rio_write_config_16 - Write 16 bits to configuration space |
191 | * @rdev: RIO device |
192 | * @offset: Offset into device configuration space |
193 | * @data: Data to be written |
194 | * |
195 | * Writes 16 bits of data to the specified offset within the |
196 | * RIO device's configuration space. |
197 | */ |
198 | static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset, |
199 | u16 data) |
200 | { |
201 | return rio_mport_write_config_16(rdev->net->hport, rdev->destid, |
202 | rdev->hopcount, offset, data); |
203 | }; |
204 | |
205 | /** |
206 | * rio_read_config_8 - Read 8 bits from configuration space |
207 | * @rdev: RIO device |
208 | * @offset: Offset into device configuration space |
209 | * @data: Pointer to read data into |
210 | * |
211 | * Reads 8 bits of data from the specified offset within the |
212 | * RIO device's configuration space. |
213 | */ |
214 | static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data) |
215 | { |
216 | return rio_mport_read_config_8(rdev->net->hport, rdev->destid, |
217 | rdev->hopcount, offset, data); |
218 | }; |
219 | |
220 | /** |
221 | * rio_write_config_8 - Write 8 bits to configuration space |
222 | * @rdev: RIO device |
223 | * @offset: Offset into device configuration space |
224 | * @data: Data to be written |
225 | * |
226 | * Writes 8 bits of data to the specified offset within the |
227 | * RIO device's configuration space. |
228 | */ |
229 | static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data) |
230 | { |
231 | return rio_mport_write_config_8(rdev->net->hport, rdev->destid, |
232 | rdev->hopcount, offset, data); |
233 | }; |
234 | |
235 | extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, |
236 | u16 data); |
237 | |
238 | /** |
239 | * rio_send_doorbell - Send a doorbell message to a device |
240 | * @rdev: RIO device |
241 | * @data: Doorbell message data |
242 | * |
243 | * Send a doorbell message to a RIO device. The doorbell message |
244 | * has a 16-bit info field provided by the @data argument. |
245 | */ |
246 | static inline int rio_send_doorbell(struct rio_dev *rdev, u16 data) |
247 | { |
248 | return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data); |
249 | }; |
250 | |
251 | /** |
252 | * rio_init_mbox_res - Initialize a RIO mailbox resource |
253 | * @res: resource struct |
254 | * @start: start of mailbox range |
255 | * @end: end of mailbox range |
256 | * |
257 | * This function is used to initialize the fields of a resource |
258 | * for use as a mailbox resource. It initializes a range of |
259 | * mailboxes using the start and end arguments. |
260 | */ |
261 | static inline void rio_init_mbox_res(struct resource *res, int start, int end) |
262 | { |
263 | memset(res, 0, sizeof(struct resource)); |
264 | res->start = start; |
265 | res->end = end; |
266 | res->flags = RIO_RESOURCE_MAILBOX; |
267 | } |
268 | |
269 | /** |
270 | * rio_init_dbell_res - Initialize a RIO doorbell resource |
271 | * @res: resource struct |
272 | * @start: start of doorbell range |
273 | * @end: end of doorbell range |
274 | * |
275 | * This function is used to initialize the fields of a resource |
276 | * for use as a doorbell resource. It initializes a range of |
277 | * doorbell messages using the start and end arguments. |
278 | */ |
279 | static inline void rio_init_dbell_res(struct resource *res, u16 start, u16 end) |
280 | { |
281 | memset(res, 0, sizeof(struct resource)); |
282 | res->start = start; |
283 | res->end = end; |
284 | res->flags = RIO_RESOURCE_DOORBELL; |
285 | } |
286 | |
287 | /** |
288 | * RIO_DEVICE - macro used to describe a specific RIO device |
289 | * @dev: the 16 bit RIO device ID |
290 | * @ven: the 16 bit RIO vendor ID |
291 | * |
292 | * This macro is used to create a struct rio_device_id that matches a |
293 | * specific device. The assembly vendor and assembly device fields |
294 | * will be set to %RIO_ANY_ID. |
295 | */ |
296 | #define RIO_DEVICE(dev,ven) \ |
297 | .did = (dev), .vid = (ven), \ |
298 | .asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID |
299 | |
300 | /* Mailbox management */ |
301 | extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int, |
302 | void (*)(struct rio_mport *, void *,int, int)); |
303 | extern int rio_release_outb_mbox(struct rio_mport *, int); |
304 | |
305 | /** |
306 | * rio_add_outb_message - Add RIO message to an outbound mailbox queue |
307 | * @mport: RIO master port containing the outbound queue |
308 | * @rdev: RIO device the message is be sent to |
309 | * @mbox: The outbound mailbox queue |
310 | * @buffer: Pointer to the message buffer |
311 | * @len: Length of the message buffer |
312 | * |
313 | * Adds a RIO message buffer to an outbound mailbox queue for |
314 | * transmission. Returns 0 on success. |
315 | */ |
316 | static inline int rio_add_outb_message(struct rio_mport *mport, |
317 | struct rio_dev *rdev, int mbox, |
318 | void *buffer, size_t len) |
319 | { |
320 | return mport->ops->add_outb_message(mport, rdev, mbox, |
321 | buffer, len); |
322 | } |
323 | |
324 | extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int, |
325 | void (*)(struct rio_mport *, void *, int, int)); |
326 | extern int rio_release_inb_mbox(struct rio_mport *, int); |
327 | |
328 | /** |
329 | * rio_add_inb_buffer - Add buffer to an inbound mailbox queue |
330 | * @mport: Master port containing the inbound mailbox |
331 | * @mbox: The inbound mailbox number |
332 | * @buffer: Pointer to the message buffer |
333 | * |
334 | * Adds a buffer to an inbound mailbox queue for reception. Returns |
335 | * 0 on success. |
336 | */ |
337 | static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox, |
338 | void *buffer) |
339 | { |
340 | return mport->ops->add_inb_buffer(mport, mbox, buffer); |
341 | } |
342 | |
343 | /** |
344 | * rio_get_inb_message - Get A RIO message from an inbound mailbox queue |
345 | * @mport: Master port containing the inbound mailbox |
346 | * @mbox: The inbound mailbox number |
347 | * |
348 | * Get a RIO message from an inbound mailbox queue. Returns 0 on success. |
349 | */ |
350 | static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox) |
351 | { |
352 | return mport->ops->get_inb_message(mport, mbox); |
353 | } |
354 | |
355 | /* Doorbell management */ |
356 | extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16, |
357 | void (*)(struct rio_mport *, void *, u16, u16, u16)); |
358 | extern int rio_release_inb_dbell(struct rio_mport *, u16, u16); |
359 | extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16); |
360 | extern int rio_release_outb_dbell(struct rio_dev *, struct resource *); |
361 | |
362 | /* Memory region management */ |
363 | int rio_claim_resource(struct rio_dev *, int); |
364 | int rio_request_regions(struct rio_dev *, char *); |
365 | void rio_release_regions(struct rio_dev *); |
366 | int rio_request_region(struct rio_dev *, int, char *); |
367 | void rio_release_region(struct rio_dev *, int); |
368 | |
369 | /* Port-Write management */ |
370 | extern int rio_request_inb_pwrite(struct rio_dev *, |
371 | int (*)(struct rio_dev *, union rio_pw_msg*, int)); |
372 | extern int rio_release_inb_pwrite(struct rio_dev *); |
373 | extern int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg); |
374 | |
375 | /* LDM support */ |
376 | int rio_register_driver(struct rio_driver *); |
377 | void rio_unregister_driver(struct rio_driver *); |
378 | struct rio_dev *rio_dev_get(struct rio_dev *); |
379 | void rio_dev_put(struct rio_dev *); |
380 | |
381 | /** |
382 | * rio_name - Get the unique RIO device identifier |
383 | * @rdev: RIO device |
384 | * |
385 | * Get the unique RIO device identifier. Returns the device |
386 | * identifier string. |
387 | */ |
388 | static inline const char *rio_name(struct rio_dev *rdev) |
389 | { |
390 | return dev_name(&rdev->dev); |
391 | } |
392 | |
393 | /** |
394 | * rio_get_drvdata - Get RIO driver specific data |
395 | * @rdev: RIO device |
396 | * |
397 | * Get RIO driver specific data. Returns a pointer to the |
398 | * driver specific data. |
399 | */ |
400 | static inline void *rio_get_drvdata(struct rio_dev *rdev) |
401 | { |
402 | return dev_get_drvdata(&rdev->dev); |
403 | } |
404 | |
405 | /** |
406 | * rio_set_drvdata - Set RIO driver specific data |
407 | * @rdev: RIO device |
408 | * @data: Pointer to driver specific data |
409 | * |
410 | * Set RIO driver specific data. device struct driver data pointer |
411 | * is set to the @data argument. |
412 | */ |
413 | static inline void rio_set_drvdata(struct rio_dev *rdev, void *data) |
414 | { |
415 | dev_set_drvdata(&rdev->dev, data); |
416 | } |
417 | |
418 | /* Misc driver helpers */ |
419 | extern u16 rio_local_get_device_id(struct rio_mport *port); |
420 | extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from); |
421 | extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did, |
422 | struct rio_dev *from); |
423 | |
424 | #endif /* LINUX_RIO_DRV_H */ |
425 |
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