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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
70a50ebd MP |
2 | /* |
3 | * RapidIO driver services | |
4 | * | |
5 | * Copyright 2005 MontaVista Software, Inc. | |
6 | * Matt Porter <mporter@kernel.crashing.org> | |
70a50ebd MP |
7 | */ |
8 | ||
9 | #ifndef LINUX_RIO_DRV_H | |
10 | #define LINUX_RIO_DRV_H | |
11 | ||
70a50ebd | 12 | #include <linux/types.h> |
70a50ebd MP |
13 | #include <linux/ioport.h> |
14 | #include <linux/list.h> | |
15 | #include <linux/errno.h> | |
de25968c | 16 | #include <linux/string.h> |
70a50ebd MP |
17 | #include <linux/rio.h> |
18 | ||
19 | extern int __rio_local_read_config_32(struct rio_mport *port, u32 offset, | |
20 | u32 * data); | |
21 | extern int __rio_local_write_config_32(struct rio_mport *port, u32 offset, | |
22 | u32 data); | |
23 | extern int __rio_local_read_config_16(struct rio_mport *port, u32 offset, | |
24 | u16 * data); | |
25 | extern int __rio_local_write_config_16(struct rio_mport *port, u32 offset, | |
26 | u16 data); | |
27 | extern int __rio_local_read_config_8(struct rio_mport *port, u32 offset, | |
28 | u8 * data); | |
29 | extern int __rio_local_write_config_8(struct rio_mport *port, u32 offset, | |
30 | u8 data); | |
31 | ||
32 | extern int rio_mport_read_config_32(struct rio_mport *port, u16 destid, | |
33 | u8 hopcount, u32 offset, u32 * data); | |
34 | extern int rio_mport_write_config_32(struct rio_mport *port, u16 destid, | |
35 | u8 hopcount, u32 offset, u32 data); | |
36 | extern int rio_mport_read_config_16(struct rio_mport *port, u16 destid, | |
37 | u8 hopcount, u32 offset, u16 * data); | |
38 | extern int rio_mport_write_config_16(struct rio_mport *port, u16 destid, | |
39 | u8 hopcount, u32 offset, u16 data); | |
40 | extern int rio_mport_read_config_8(struct rio_mport *port, u16 destid, | |
41 | u8 hopcount, u32 offset, u8 * data); | |
42 | extern int rio_mport_write_config_8(struct rio_mport *port, u16 destid, | |
43 | u8 hopcount, u32 offset, u8 data); | |
44 | ||
45 | /** | |
46 | * rio_local_read_config_32 - Read 32 bits from local configuration space | |
47 | * @port: Master port | |
48 | * @offset: Offset into local configuration space | |
49 | * @data: Pointer to read data into | |
50 | * | |
51 | * Reads 32 bits of data from the specified offset within the local | |
52 | * device's configuration space. | |
53 | */ | |
54 | static inline int rio_local_read_config_32(struct rio_mport *port, u32 offset, | |
55 | u32 * data) | |
56 | { | |
57 | return __rio_local_read_config_32(port, offset, data); | |
58 | } | |
59 | ||
60 | /** | |
61 | * rio_local_write_config_32 - Write 32 bits to local configuration space | |
62 | * @port: Master port | |
63 | * @offset: Offset into local configuration space | |
64 | * @data: Data to be written | |
65 | * | |
66 | * Writes 32 bits of data to the specified offset within the local | |
67 | * device's configuration space. | |
68 | */ | |
69 | static inline int rio_local_write_config_32(struct rio_mport *port, u32 offset, | |
70 | u32 data) | |
71 | { | |
72 | return __rio_local_write_config_32(port, offset, data); | |
73 | } | |
74 | ||
75 | /** | |
76 | * rio_local_read_config_16 - Read 16 bits from local configuration space | |
77 | * @port: Master port | |
78 | * @offset: Offset into local configuration space | |
79 | * @data: Pointer to read data into | |
80 | * | |
81 | * Reads 16 bits of data from the specified offset within the local | |
82 | * device's configuration space. | |
83 | */ | |
84 | static inline int rio_local_read_config_16(struct rio_mport *port, u32 offset, | |
85 | u16 * data) | |
86 | { | |
87 | return __rio_local_read_config_16(port, offset, data); | |
88 | } | |
89 | ||
90 | /** | |
91 | * rio_local_write_config_16 - Write 16 bits to local configuration space | |
92 | * @port: Master port | |
93 | * @offset: Offset into local configuration space | |
94 | * @data: Data to be written | |
95 | * | |
96 | * Writes 16 bits of data to the specified offset within the local | |
97 | * device's configuration space. | |
98 | */ | |
99 | ||
100 | static inline int rio_local_write_config_16(struct rio_mport *port, u32 offset, | |
101 | u16 data) | |
102 | { | |
103 | return __rio_local_write_config_16(port, offset, data); | |
104 | } | |
105 | ||
106 | /** | |
107 | * rio_local_read_config_8 - Read 8 bits from local configuration space | |
108 | * @port: Master port | |
109 | * @offset: Offset into local configuration space | |
110 | * @data: Pointer to read data into | |
111 | * | |
112 | * Reads 8 bits of data from the specified offset within the local | |
113 | * device's configuration space. | |
114 | */ | |
115 | static inline int rio_local_read_config_8(struct rio_mport *port, u32 offset, | |
116 | u8 * data) | |
117 | { | |
118 | return __rio_local_read_config_8(port, offset, data); | |
119 | } | |
120 | ||
121 | /** | |
122 | * rio_local_write_config_8 - Write 8 bits to local configuration space | |
123 | * @port: Master port | |
124 | * @offset: Offset into local configuration space | |
125 | * @data: Data to be written | |
126 | * | |
127 | * Writes 8 bits of data to the specified offset within the local | |
128 | * device's configuration space. | |
129 | */ | |
130 | static inline int rio_local_write_config_8(struct rio_mport *port, u32 offset, | |
131 | u8 data) | |
132 | { | |
133 | return __rio_local_write_config_8(port, offset, data); | |
134 | } | |
135 | ||
136 | /** | |
137 | * rio_read_config_32 - Read 32 bits from configuration space | |
138 | * @rdev: RIO device | |
139 | * @offset: Offset into device configuration space | |
140 | * @data: Pointer to read data into | |
141 | * | |
142 | * Reads 32 bits of data from the specified offset within the | |
143 | * RIO device's configuration space. | |
144 | */ | |
145 | static inline int rio_read_config_32(struct rio_dev *rdev, u32 offset, | |
146 | u32 * data) | |
147 | { | |
a93192a5 AB |
148 | return rio_mport_read_config_32(rdev->net->hport, rdev->destid, |
149 | rdev->hopcount, offset, data); | |
70a50ebd MP |
150 | }; |
151 | ||
152 | /** | |
153 | * rio_write_config_32 - Write 32 bits to configuration space | |
154 | * @rdev: RIO device | |
155 | * @offset: Offset into device configuration space | |
156 | * @data: Data to be written | |
157 | * | |
158 | * Writes 32 bits of data to the specified offset within the | |
159 | * RIO device's configuration space. | |
160 | */ | |
161 | static inline int rio_write_config_32(struct rio_dev *rdev, u32 offset, | |
162 | u32 data) | |
163 | { | |
a93192a5 AB |
164 | return rio_mport_write_config_32(rdev->net->hport, rdev->destid, |
165 | rdev->hopcount, offset, data); | |
70a50ebd MP |
166 | }; |
167 | ||
168 | /** | |
169 | * rio_read_config_16 - Read 16 bits from configuration space | |
170 | * @rdev: RIO device | |
171 | * @offset: Offset into device configuration space | |
172 | * @data: Pointer to read data into | |
173 | * | |
174 | * Reads 16 bits of data from the specified offset within the | |
175 | * RIO device's configuration space. | |
176 | */ | |
177 | static inline int rio_read_config_16(struct rio_dev *rdev, u32 offset, | |
178 | u16 * data) | |
179 | { | |
a93192a5 AB |
180 | return rio_mport_read_config_16(rdev->net->hport, rdev->destid, |
181 | rdev->hopcount, offset, data); | |
70a50ebd MP |
182 | }; |
183 | ||
184 | /** | |
185 | * rio_write_config_16 - Write 16 bits to configuration space | |
186 | * @rdev: RIO device | |
187 | * @offset: Offset into device configuration space | |
188 | * @data: Data to be written | |
189 | * | |
190 | * Writes 16 bits of data to the specified offset within the | |
191 | * RIO device's configuration space. | |
192 | */ | |
193 | static inline int rio_write_config_16(struct rio_dev *rdev, u32 offset, | |
194 | u16 data) | |
195 | { | |
a93192a5 AB |
196 | return rio_mport_write_config_16(rdev->net->hport, rdev->destid, |
197 | rdev->hopcount, offset, data); | |
70a50ebd MP |
198 | }; |
199 | ||
200 | /** | |
201 | * rio_read_config_8 - Read 8 bits from configuration space | |
202 | * @rdev: RIO device | |
203 | * @offset: Offset into device configuration space | |
204 | * @data: Pointer to read data into | |
205 | * | |
206 | * Reads 8 bits of data from the specified offset within the | |
207 | * RIO device's configuration space. | |
208 | */ | |
209 | static inline int rio_read_config_8(struct rio_dev *rdev, u32 offset, u8 * data) | |
210 | { | |
a93192a5 AB |
211 | return rio_mport_read_config_8(rdev->net->hport, rdev->destid, |
212 | rdev->hopcount, offset, data); | |
70a50ebd MP |
213 | }; |
214 | ||
215 | /** | |
216 | * rio_write_config_8 - Write 8 bits to configuration space | |
217 | * @rdev: RIO device | |
218 | * @offset: Offset into device configuration space | |
219 | * @data: Data to be written | |
220 | * | |
221 | * Writes 8 bits of data to the specified offset within the | |
222 | * RIO device's configuration space. | |
223 | */ | |
224 | static inline int rio_write_config_8(struct rio_dev *rdev, u32 offset, u8 data) | |
225 | { | |
a93192a5 AB |
226 | return rio_mport_write_config_8(rdev->net->hport, rdev->destid, |
227 | rdev->hopcount, offset, data); | |
70a50ebd MP |
228 | }; |
229 | ||
230 | extern int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, | |
231 | u16 data); | |
232 | ||
233 | /** | |
234 | * rio_send_doorbell - Send a doorbell message to a device | |
235 | * @rdev: RIO device | |
236 | * @data: Doorbell message data | |
237 | * | |
238 | * Send a doorbell message to a RIO device. The doorbell message | |
239 | * has a 16-bit info field provided by the @data argument. | |
240 | */ | |
241 | static inline int rio_send_doorbell(struct rio_dev *rdev, u16 data) | |
242 | { | |
243 | return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data); | |
244 | }; | |
245 | ||
246 | /** | |
247 | * rio_init_mbox_res - Initialize a RIO mailbox resource | |
248 | * @res: resource struct | |
249 | * @start: start of mailbox range | |
250 | * @end: end of mailbox range | |
251 | * | |
252 | * This function is used to initialize the fields of a resource | |
253 | * for use as a mailbox resource. It initializes a range of | |
254 | * mailboxes using the start and end arguments. | |
255 | */ | |
256 | static inline void rio_init_mbox_res(struct resource *res, int start, int end) | |
257 | { | |
258 | memset(res, 0, sizeof(struct resource)); | |
259 | res->start = start; | |
260 | res->end = end; | |
261 | res->flags = RIO_RESOURCE_MAILBOX; | |
262 | } | |
263 | ||
264 | /** | |
265 | * rio_init_dbell_res - Initialize a RIO doorbell resource | |
266 | * @res: resource struct | |
267 | * @start: start of doorbell range | |
268 | * @end: end of doorbell range | |
269 | * | |
270 | * This function is used to initialize the fields of a resource | |
271 | * for use as a doorbell resource. It initializes a range of | |
272 | * doorbell messages using the start and end arguments. | |
273 | */ | |
274 | static inline void rio_init_dbell_res(struct resource *res, u16 start, u16 end) | |
275 | { | |
276 | memset(res, 0, sizeof(struct resource)); | |
277 | res->start = start; | |
278 | res->end = end; | |
279 | res->flags = RIO_RESOURCE_DOORBELL; | |
280 | } | |
281 | ||
282 | /** | |
283 | * RIO_DEVICE - macro used to describe a specific RIO device | |
0863afb3 MW |
284 | * @dev: the 16 bit RIO device ID |
285 | * @ven: the 16 bit RIO vendor ID | |
70a50ebd MP |
286 | * |
287 | * This macro is used to create a struct rio_device_id that matches a | |
288 | * specific device. The assembly vendor and assembly device fields | |
289 | * will be set to %RIO_ANY_ID. | |
290 | */ | |
291 | #define RIO_DEVICE(dev,ven) \ | |
292 | .did = (dev), .vid = (ven), \ | |
293 | .asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID | |
294 | ||
295 | /* Mailbox management */ | |
6978bbc0 MP |
296 | extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int, |
297 | void (*)(struct rio_mport *, void *,int, int)); | |
70a50ebd MP |
298 | extern int rio_release_outb_mbox(struct rio_mport *, int); |
299 | ||
300 | /** | |
301 | * rio_add_outb_message - Add RIO message to an outbound mailbox queue | |
302 | * @mport: RIO master port containing the outbound queue | |
303 | * @rdev: RIO device the message is be sent to | |
304 | * @mbox: The outbound mailbox queue | |
305 | * @buffer: Pointer to the message buffer | |
306 | * @len: Length of the message buffer | |
307 | * | |
308 | * Adds a RIO message buffer to an outbound mailbox queue for | |
309 | * transmission. Returns 0 on success. | |
310 | */ | |
311 | static inline int rio_add_outb_message(struct rio_mport *mport, | |
312 | struct rio_dev *rdev, int mbox, | |
313 | void *buffer, size_t len) | |
314 | { | |
f8f06269 AB |
315 | return mport->ops->add_outb_message(mport, rdev, mbox, |
316 | buffer, len); | |
70a50ebd MP |
317 | } |
318 | ||
6978bbc0 MP |
319 | extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int, |
320 | void (*)(struct rio_mport *, void *, int, int)); | |
70a50ebd MP |
321 | extern int rio_release_inb_mbox(struct rio_mport *, int); |
322 | ||
323 | /** | |
324 | * rio_add_inb_buffer - Add buffer to an inbound mailbox queue | |
325 | * @mport: Master port containing the inbound mailbox | |
326 | * @mbox: The inbound mailbox number | |
327 | * @buffer: Pointer to the message buffer | |
328 | * | |
329 | * Adds a buffer to an inbound mailbox queue for reception. Returns | |
330 | * 0 on success. | |
331 | */ | |
332 | static inline int rio_add_inb_buffer(struct rio_mport *mport, int mbox, | |
333 | void *buffer) | |
334 | { | |
f8f06269 | 335 | return mport->ops->add_inb_buffer(mport, mbox, buffer); |
70a50ebd MP |
336 | } |
337 | ||
338 | /** | |
339 | * rio_get_inb_message - Get A RIO message from an inbound mailbox queue | |
340 | * @mport: Master port containing the inbound mailbox | |
341 | * @mbox: The inbound mailbox number | |
70a50ebd MP |
342 | * |
343 | * Get a RIO message from an inbound mailbox queue. Returns 0 on success. | |
344 | */ | |
345 | static inline void *rio_get_inb_message(struct rio_mport *mport, int mbox) | |
346 | { | |
f8f06269 | 347 | return mport->ops->get_inb_message(mport, mbox); |
70a50ebd MP |
348 | } |
349 | ||
350 | /* Doorbell management */ | |
6978bbc0 MP |
351 | extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16, |
352 | void (*)(struct rio_mport *, void *, u16, u16, u16)); | |
70a50ebd MP |
353 | extern int rio_release_inb_dbell(struct rio_mport *, u16, u16); |
354 | extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16); | |
355 | extern int rio_release_outb_dbell(struct rio_dev *, struct resource *); | |
356 | ||
357 | /* Memory region management */ | |
358 | int rio_claim_resource(struct rio_dev *, int); | |
359 | int rio_request_regions(struct rio_dev *, char *); | |
360 | void rio_release_regions(struct rio_dev *); | |
361 | int rio_request_region(struct rio_dev *, int, char *); | |
362 | void rio_release_region(struct rio_dev *, int); | |
363 | ||
da1589f0 AB |
364 | /* Memory mapping functions */ |
365 | extern int rio_map_inb_region(struct rio_mport *mport, dma_addr_t local, | |
366 | u64 rbase, u32 size, u32 rflags); | |
367 | extern void rio_unmap_inb_region(struct rio_mport *mport, dma_addr_t lstart); | |
93bdaca5 AB |
368 | extern int rio_map_outb_region(struct rio_mport *mport, u16 destid, u64 rbase, |
369 | u32 size, u32 rflags, dma_addr_t *local); | |
370 | extern void rio_unmap_outb_region(struct rio_mport *mport, | |
371 | u16 destid, u64 rstart); | |
da1589f0 | 372 | |
e5cabeb3 AB |
373 | /* Port-Write management */ |
374 | extern int rio_request_inb_pwrite(struct rio_dev *, | |
375 | int (*)(struct rio_dev *, union rio_pw_msg*, int)); | |
376 | extern int rio_release_inb_pwrite(struct rio_dev *); | |
9a0b0627 AB |
377 | extern int rio_add_mport_pw_handler(struct rio_mport *mport, void *dev_id, |
378 | int (*pwcback)(struct rio_mport *mport, void *dev_id, | |
379 | union rio_pw_msg *msg, int step)); | |
380 | extern int rio_del_mport_pw_handler(struct rio_mport *mport, void *dev_id, | |
381 | int (*pwcback)(struct rio_mport *mport, void *dev_id, | |
382 | union rio_pw_msg *msg, int step)); | |
383 | extern int rio_inb_pwrite_handler(struct rio_mport *mport, | |
384 | union rio_pw_msg *pw_msg); | |
b6cb95e8 | 385 | extern void rio_pw_enable(struct rio_mport *mport, int enable); |
e5cabeb3 | 386 | |
70a50ebd MP |
387 | /* LDM support */ |
388 | int rio_register_driver(struct rio_driver *); | |
389 | void rio_unregister_driver(struct rio_driver *); | |
390 | struct rio_dev *rio_dev_get(struct rio_dev *); | |
391 | void rio_dev_put(struct rio_dev *); | |
392 | ||
e42d98eb AB |
393 | #ifdef CONFIG_RAPIDIO_DMA_ENGINE |
394 | extern struct dma_chan *rio_request_dma(struct rio_dev *rdev); | |
4aff1ce7 | 395 | extern struct dma_chan *rio_request_mport_dma(struct rio_mport *mport); |
e42d98eb AB |
396 | extern void rio_release_dma(struct dma_chan *dchan); |
397 | extern struct dma_async_tx_descriptor *rio_dma_prep_slave_sg( | |
398 | struct rio_dev *rdev, struct dma_chan *dchan, | |
399 | struct rio_dma_data *data, | |
400 | enum dma_transfer_direction direction, unsigned long flags); | |
4aff1ce7 AB |
401 | extern struct dma_async_tx_descriptor *rio_dma_prep_xfer( |
402 | struct dma_chan *dchan, u16 destid, | |
403 | struct rio_dma_data *data, | |
404 | enum dma_transfer_direction direction, unsigned long flags); | |
e42d98eb AB |
405 | #endif |
406 | ||
70a50ebd MP |
407 | /** |
408 | * rio_name - Get the unique RIO device identifier | |
409 | * @rdev: RIO device | |
410 | * | |
411 | * Get the unique RIO device identifier. Returns the device | |
412 | * identifier string. | |
413 | */ | |
b53c7583 | 414 | static inline const char *rio_name(struct rio_dev *rdev) |
70a50ebd | 415 | { |
b53c7583 | 416 | return dev_name(&rdev->dev); |
70a50ebd MP |
417 | } |
418 | ||
419 | /** | |
420 | * rio_get_drvdata - Get RIO driver specific data | |
421 | * @rdev: RIO device | |
422 | * | |
423 | * Get RIO driver specific data. Returns a pointer to the | |
424 | * driver specific data. | |
425 | */ | |
426 | static inline void *rio_get_drvdata(struct rio_dev *rdev) | |
427 | { | |
428 | return dev_get_drvdata(&rdev->dev); | |
429 | } | |
430 | ||
431 | /** | |
432 | * rio_set_drvdata - Set RIO driver specific data | |
433 | * @rdev: RIO device | |
434 | * @data: Pointer to driver specific data | |
435 | * | |
436 | * Set RIO driver specific data. device struct driver data pointer | |
437 | * is set to the @data argument. | |
438 | */ | |
439 | static inline void rio_set_drvdata(struct rio_dev *rdev, void *data) | |
440 | { | |
441 | dev_set_drvdata(&rdev->dev, data); | |
442 | } | |
443 | ||
444 | /* Misc driver helpers */ | |
445 | extern u16 rio_local_get_device_id(struct rio_mport *port); | |
5024622f | 446 | extern void rio_local_set_device_id(struct rio_mport *port, u16 did); |
a11650e1 | 447 | extern int rio_init_mports(void); |
70a50ebd | 448 | |
70a50ebd | 449 | #endif /* LINUX_RIO_DRV_H */ |