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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
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 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 */
166static 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 */
182static 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 */
198static 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 */
214static 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 */
229static 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
235extern 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 */
246static 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 */
261static 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 */
279static 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 */
301extern int rio_request_outb_mbox(struct rio_mport *, void *, int, int,
302 void (*)(struct rio_mport *, void *,int, int));
303extern 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 */
316static 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
324extern int rio_request_inb_mbox(struct rio_mport *, void *, int, int,
325 void (*)(struct rio_mport *, void *, int, int));
326extern 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 */
337static 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 */
350static 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 */
356extern int rio_request_inb_dbell(struct rio_mport *, void *, u16, u16,
357 void (*)(struct rio_mport *, void *, u16, u16, u16));
358extern int rio_release_inb_dbell(struct rio_mport *, u16, u16);
359extern struct resource *rio_request_outb_dbell(struct rio_dev *, u16, u16);
360extern int rio_release_outb_dbell(struct rio_dev *, struct resource *);
361
362/* Memory region management */
363int rio_claim_resource(struct rio_dev *, int);
364int rio_request_regions(struct rio_dev *, char *);
365void rio_release_regions(struct rio_dev *);
366int rio_request_region(struct rio_dev *, int, char *);
367void rio_release_region(struct rio_dev *, int);
368
369/* Port-Write management */
370extern int rio_request_inb_pwrite(struct rio_dev *,
371 int (*)(struct rio_dev *, union rio_pw_msg*, int));
372extern int rio_release_inb_pwrite(struct rio_dev *);
373extern int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg);
374
375/* LDM support */
376int rio_register_driver(struct rio_driver *);
377void rio_unregister_driver(struct rio_driver *);
378struct rio_dev *rio_dev_get(struct rio_dev *);
379void 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 */
388static 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 */
400static 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 */
413static 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 */
419extern u16 rio_local_get_device_id(struct rio_mport *port);
420extern struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from);
421extern 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 */