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Matt Porter70a50eb2005-11-07 01:00:16 -08001/*
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
Matt Porter70a50eb2005-11-07 01:00:16 -080016#include <linux/types.h>
Matt Porter70a50eb2005-11-07 01:00:16 -080017#include <linux/ioport.h>
18#include <linux/list.h>
19#include <linux/errno.h>
20#include <linux/device.h>
Tim Schmielaude259682006-01-08 01:02:05 -080021#include <linux/string.h>
Matt Porter70a50eb2005-11-07 01:00:16 -080022#include <linux/rio.h>
23
24extern int __rio_local_read_config_32(struct rio_mport *port, u32 offset,
25 u32 * data);
26extern int __rio_local_write_config_32(struct rio_mport *port, u32 offset,
27 u32 data);
28extern int __rio_local_read_config_16(struct rio_mport *port, u32 offset,
29 u16 * data);
30extern int __rio_local_write_config_16(struct rio_mport *port, u32 offset,
31 u16 data);
32extern int __rio_local_read_config_8(struct rio_mport *port, u32 offset,
33 u8 * data);
34extern int __rio_local_write_config_8(struct rio_mport *port, u32 offset,
35 u8 data);
36
37extern int rio_mport_read_config_32(struct rio_mport *port, u16 destid,
38 u8 hopcount, u32 offset, u32 * data);
39extern int rio_mport_write_config_32(struct rio_mport *port, u16 destid,
40 u8 hopcount, u32 offset, u32 data);
41extern int rio_mport_read_config_16(struct rio_mport *port, u16 destid,
42 u8 hopcount, u32 offset, u16 * data);
43extern int rio_mport_write_config_16(struct rio_mport *port, u16 destid,
44 u8 hopcount, u32 offset, u16 data);
45extern int rio_mport_read_config_8(struct rio_mport *port, u16 destid,
46 u8 hopcount, u32 offset, u8 * data);
47extern 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 */
59static 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 */
74static 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 */
89static 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
105static 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 */
120static 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 */
135static 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 */
150static 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 */
174static 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 */
198static 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 */
222static 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 */
246static 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 */
269static 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
283extern 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 */
294static 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 */
309static 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 */
327static 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
Martin Waitz0863afb2006-01-09 20:53:55 -0800337 * @dev: the 16 bit RIO device ID
338 * @ven: the 16 bit RIO vendor ID
Matt Porter70a50eb2005-11-07 01:00:16 -0800339 *
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 */
Matt Porter6978bbc2005-11-07 01:00:20 -0800349extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int,
350 void (*)(struct rio_mport *, void *,int, int));
Matt Porter70a50eb2005-11-07 01:00:16 -0800351extern 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 */
364static 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
Matt Porter6978bbc2005-11-07 01:00:20 -0800371extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int,
372 void (*)(struct rio_mport *, void *, int, int));
Matt Porter70a50eb2005-11-07 01:00:16 -0800373extern 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 */
384static 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
Matt Porter70a50eb2005-11-07 01:00:16 -0800394 *
395 * Get a RIO message from an inbound mailbox queue. Returns 0 on success.
396 */
397static 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 */
Matt Porter6978bbc2005-11-07 01:00:20 -0800403extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16,
404 void (*)(struct rio_mport *, void *, u16, u16, u16));
Matt Porter70a50eb2005-11-07 01:00:16 -0800405extern int rio_release_inb_dbell(struct rio_mport *, u16, u16);
406extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16);
407extern int rio_release_outb_dbell(struct rio_dev *, struct resource *);
408
409/* Memory region management */
410int rio_claim_resource(struct rio_dev *, int);
411int rio_request_regions(struct rio_dev *, char *);
412void rio_release_regions(struct rio_dev *);
413int rio_request_region(struct rio_dev *, int, char *);
414void rio_release_region(struct rio_dev *, int);
415
416/* LDM support */
417int rio_register_driver(struct rio_driver *);
418void rio_unregister_driver(struct rio_driver *);
419struct rio_dev *rio_dev_get(struct rio_dev *);
420void 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 */
Kay Sieversb53c75832008-12-04 10:01:52 -0800429static inline const char *rio_name(struct rio_dev *rdev)
Matt Porter70a50eb2005-11-07 01:00:16 -0800430{
Kay Sieversb53c75832008-12-04 10:01:52 -0800431 return dev_name(&rdev->dev);
Matt Porter70a50eb2005-11-07 01:00:16 -0800432}
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 */
441static 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 */
454static 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 */
460extern u16 rio_local_get_device_id(struct rio_mport *port);
461extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from);
462extern struct rio_dev *rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did,
463 struct rio_dev *from);
464
Matt Porter70a50eb2005-11-07 01:00:16 -0800465#endif /* LINUX_RIO_DRV_H */