Commit | Line | Data |
---|---|---|
394b701c MP |
1 | /* |
2 | * RapidIO interconnect services | |
3 | * (RapidIO Interconnect Specification, http://www.rapidio.org) | |
4 | * | |
5 | * Copyright 2005 MontaVista Software, Inc. | |
6 | * Matt Porter <mporter@kernel.crashing.org> | |
7 | * | |
e5cabeb3 AB |
8 | * Copyright 2009 Integrated Device Technology, Inc. |
9 | * Alex Bounine <alexandre.bounine@idt.com> | |
10 | * - Added Port-Write/Error Management initialization and handling | |
11 | * | |
394b701c MP |
12 | * This program is free software; you can redistribute it and/or modify it |
13 | * under the terms of the GNU General Public License as published by the | |
14 | * Free Software Foundation; either version 2 of the License, or (at your | |
15 | * option) any later version. | |
16 | */ | |
17 | ||
394b701c MP |
18 | #include <linux/types.h> |
19 | #include <linux/kernel.h> | |
20 | ||
21 | #include <linux/delay.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/rio.h> | |
24 | #include <linux/rio_drv.h> | |
25 | #include <linux/rio_ids.h> | |
26 | #include <linux/rio_regs.h> | |
27 | #include <linux/module.h> | |
28 | #include <linux/spinlock.h> | |
de25968c | 29 | #include <linux/slab.h> |
5febf1cd | 30 | #include <linux/interrupt.h> |
394b701c MP |
31 | |
32 | #include "rio.h" | |
33 | ||
34 | static LIST_HEAD(rio_mports); | |
35 | ||
36 | /** | |
37 | * rio_local_get_device_id - Get the base/extended device id for a port | |
38 | * @port: RIO master port from which to get the deviceid | |
39 | * | |
40 | * Reads the base/extended device id from the local device | |
41 | * implementing the master port. Returns the 8/16-bit device | |
42 | * id. | |
43 | */ | |
44 | u16 rio_local_get_device_id(struct rio_mport *port) | |
45 | { | |
46 | u32 result; | |
47 | ||
48 | rio_local_read_config_32(port, RIO_DID_CSR, &result); | |
49 | ||
e0423236 | 50 | return (RIO_GET_DID(port->sys_size, result)); |
394b701c MP |
51 | } |
52 | ||
53 | /** | |
54 | * rio_request_inb_mbox - request inbound mailbox service | |
55 | * @mport: RIO master port from which to allocate the mailbox resource | |
6978bbc0 | 56 | * @dev_id: Device specific pointer to pass on event |
394b701c MP |
57 | * @mbox: Mailbox number to claim |
58 | * @entries: Number of entries in inbound mailbox queue | |
59 | * @minb: Callback to execute when inbound message is received | |
60 | * | |
61 | * Requests ownership of an inbound mailbox resource and binds | |
62 | * a callback function to the resource. Returns %0 on success. | |
63 | */ | |
64 | int rio_request_inb_mbox(struct rio_mport *mport, | |
6978bbc0 | 65 | void *dev_id, |
394b701c MP |
66 | int mbox, |
67 | int entries, | |
6978bbc0 | 68 | void (*minb) (struct rio_mport * mport, void *dev_id, int mbox, |
394b701c MP |
69 | int slot)) |
70 | { | |
71 | int rc = 0; | |
72 | ||
73 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); | |
74 | ||
75 | if (res) { | |
76 | rio_init_mbox_res(res, mbox, mbox); | |
77 | ||
78 | /* Make sure this mailbox isn't in use */ | |
79 | if ((rc = | |
80 | request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE], | |
81 | res)) < 0) { | |
82 | kfree(res); | |
83 | goto out; | |
84 | } | |
85 | ||
86 | mport->inb_msg[mbox].res = res; | |
87 | ||
88 | /* Hook the inbound message callback */ | |
89 | mport->inb_msg[mbox].mcback = minb; | |
90 | ||
6978bbc0 | 91 | rc = rio_open_inb_mbox(mport, dev_id, mbox, entries); |
394b701c MP |
92 | } else |
93 | rc = -ENOMEM; | |
94 | ||
95 | out: | |
96 | return rc; | |
97 | } | |
98 | ||
99 | /** | |
100 | * rio_release_inb_mbox - release inbound mailbox message service | |
101 | * @mport: RIO master port from which to release the mailbox resource | |
102 | * @mbox: Mailbox number to release | |
103 | * | |
104 | * Releases ownership of an inbound mailbox resource. Returns 0 | |
105 | * if the request has been satisfied. | |
106 | */ | |
107 | int rio_release_inb_mbox(struct rio_mport *mport, int mbox) | |
108 | { | |
109 | rio_close_inb_mbox(mport, mbox); | |
110 | ||
111 | /* Release the mailbox resource */ | |
112 | return release_resource(mport->inb_msg[mbox].res); | |
113 | } | |
114 | ||
115 | /** | |
116 | * rio_request_outb_mbox - request outbound mailbox service | |
117 | * @mport: RIO master port from which to allocate the mailbox resource | |
6978bbc0 | 118 | * @dev_id: Device specific pointer to pass on event |
394b701c MP |
119 | * @mbox: Mailbox number to claim |
120 | * @entries: Number of entries in outbound mailbox queue | |
121 | * @moutb: Callback to execute when outbound message is sent | |
122 | * | |
123 | * Requests ownership of an outbound mailbox resource and binds | |
124 | * a callback function to the resource. Returns 0 on success. | |
125 | */ | |
126 | int rio_request_outb_mbox(struct rio_mport *mport, | |
6978bbc0 | 127 | void *dev_id, |
394b701c MP |
128 | int mbox, |
129 | int entries, | |
6978bbc0 | 130 | void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot)) |
394b701c MP |
131 | { |
132 | int rc = 0; | |
133 | ||
134 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); | |
135 | ||
136 | if (res) { | |
137 | rio_init_mbox_res(res, mbox, mbox); | |
138 | ||
139 | /* Make sure this outbound mailbox isn't in use */ | |
140 | if ((rc = | |
141 | request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE], | |
142 | res)) < 0) { | |
143 | kfree(res); | |
144 | goto out; | |
145 | } | |
146 | ||
147 | mport->outb_msg[mbox].res = res; | |
148 | ||
149 | /* Hook the inbound message callback */ | |
150 | mport->outb_msg[mbox].mcback = moutb; | |
151 | ||
6978bbc0 | 152 | rc = rio_open_outb_mbox(mport, dev_id, mbox, entries); |
394b701c MP |
153 | } else |
154 | rc = -ENOMEM; | |
155 | ||
156 | out: | |
157 | return rc; | |
158 | } | |
159 | ||
160 | /** | |
161 | * rio_release_outb_mbox - release outbound mailbox message service | |
162 | * @mport: RIO master port from which to release the mailbox resource | |
163 | * @mbox: Mailbox number to release | |
164 | * | |
165 | * Releases ownership of an inbound mailbox resource. Returns 0 | |
166 | * if the request has been satisfied. | |
167 | */ | |
168 | int rio_release_outb_mbox(struct rio_mport *mport, int mbox) | |
169 | { | |
170 | rio_close_outb_mbox(mport, mbox); | |
171 | ||
172 | /* Release the mailbox resource */ | |
173 | return release_resource(mport->outb_msg[mbox].res); | |
174 | } | |
175 | ||
176 | /** | |
177 | * rio_setup_inb_dbell - bind inbound doorbell callback | |
178 | * @mport: RIO master port to bind the doorbell callback | |
6978bbc0 | 179 | * @dev_id: Device specific pointer to pass on event |
394b701c MP |
180 | * @res: Doorbell message resource |
181 | * @dinb: Callback to execute when doorbell is received | |
182 | * | |
183 | * Adds a doorbell resource/callback pair into a port's | |
184 | * doorbell event list. Returns 0 if the request has been | |
185 | * satisfied. | |
186 | */ | |
187 | static int | |
6978bbc0 MP |
188 | rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res, |
189 | void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, u16 dst, | |
394b701c MP |
190 | u16 info)) |
191 | { | |
192 | int rc = 0; | |
193 | struct rio_dbell *dbell; | |
194 | ||
195 | if (!(dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL))) { | |
196 | rc = -ENOMEM; | |
197 | goto out; | |
198 | } | |
199 | ||
200 | dbell->res = res; | |
201 | dbell->dinb = dinb; | |
6978bbc0 | 202 | dbell->dev_id = dev_id; |
394b701c MP |
203 | |
204 | list_add_tail(&dbell->node, &mport->dbells); | |
205 | ||
206 | out: | |
207 | return rc; | |
208 | } | |
209 | ||
210 | /** | |
211 | * rio_request_inb_dbell - request inbound doorbell message service | |
212 | * @mport: RIO master port from which to allocate the doorbell resource | |
6978bbc0 | 213 | * @dev_id: Device specific pointer to pass on event |
394b701c MP |
214 | * @start: Doorbell info range start |
215 | * @end: Doorbell info range end | |
216 | * @dinb: Callback to execute when doorbell is received | |
217 | * | |
218 | * Requests ownership of an inbound doorbell resource and binds | |
219 | * a callback function to the resource. Returns 0 if the request | |
220 | * has been satisfied. | |
221 | */ | |
222 | int rio_request_inb_dbell(struct rio_mport *mport, | |
6978bbc0 | 223 | void *dev_id, |
394b701c MP |
224 | u16 start, |
225 | u16 end, | |
6978bbc0 | 226 | void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, |
394b701c MP |
227 | u16 dst, u16 info)) |
228 | { | |
229 | int rc = 0; | |
230 | ||
231 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); | |
232 | ||
233 | if (res) { | |
234 | rio_init_dbell_res(res, start, end); | |
235 | ||
236 | /* Make sure these doorbells aren't in use */ | |
237 | if ((rc = | |
238 | request_resource(&mport->riores[RIO_DOORBELL_RESOURCE], | |
239 | res)) < 0) { | |
240 | kfree(res); | |
241 | goto out; | |
242 | } | |
243 | ||
244 | /* Hook the doorbell callback */ | |
6978bbc0 | 245 | rc = rio_setup_inb_dbell(mport, dev_id, res, dinb); |
394b701c MP |
246 | } else |
247 | rc = -ENOMEM; | |
248 | ||
249 | out: | |
250 | return rc; | |
251 | } | |
252 | ||
253 | /** | |
254 | * rio_release_inb_dbell - release inbound doorbell message service | |
255 | * @mport: RIO master port from which to release the doorbell resource | |
256 | * @start: Doorbell info range start | |
257 | * @end: Doorbell info range end | |
258 | * | |
259 | * Releases ownership of an inbound doorbell resource and removes | |
260 | * callback from the doorbell event list. Returns 0 if the request | |
261 | * has been satisfied. | |
262 | */ | |
263 | int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end) | |
264 | { | |
265 | int rc = 0, found = 0; | |
266 | struct rio_dbell *dbell; | |
267 | ||
268 | list_for_each_entry(dbell, &mport->dbells, node) { | |
269 | if ((dbell->res->start == start) && (dbell->res->end == end)) { | |
270 | found = 1; | |
271 | break; | |
272 | } | |
273 | } | |
274 | ||
275 | /* If we can't find an exact match, fail */ | |
276 | if (!found) { | |
277 | rc = -EINVAL; | |
278 | goto out; | |
279 | } | |
280 | ||
281 | /* Delete from list */ | |
282 | list_del(&dbell->node); | |
283 | ||
284 | /* Release the doorbell resource */ | |
285 | rc = release_resource(dbell->res); | |
286 | ||
287 | /* Free the doorbell event */ | |
288 | kfree(dbell); | |
289 | ||
290 | out: | |
291 | return rc; | |
292 | } | |
293 | ||
294 | /** | |
295 | * rio_request_outb_dbell - request outbound doorbell message range | |
296 | * @rdev: RIO device from which to allocate the doorbell resource | |
297 | * @start: Doorbell message range start | |
298 | * @end: Doorbell message range end | |
299 | * | |
300 | * Requests ownership of a doorbell message range. Returns a resource | |
301 | * if the request has been satisfied or %NULL on failure. | |
302 | */ | |
303 | struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start, | |
304 | u16 end) | |
305 | { | |
306 | struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL); | |
307 | ||
308 | if (res) { | |
309 | rio_init_dbell_res(res, start, end); | |
310 | ||
311 | /* Make sure these doorbells aren't in use */ | |
312 | if (request_resource(&rdev->riores[RIO_DOORBELL_RESOURCE], res) | |
313 | < 0) { | |
314 | kfree(res); | |
315 | res = NULL; | |
316 | } | |
317 | } | |
318 | ||
319 | return res; | |
320 | } | |
321 | ||
322 | /** | |
323 | * rio_release_outb_dbell - release outbound doorbell message range | |
324 | * @rdev: RIO device from which to release the doorbell resource | |
325 | * @res: Doorbell resource to be freed | |
326 | * | |
327 | * Releases ownership of a doorbell message range. Returns 0 if the | |
328 | * request has been satisfied. | |
329 | */ | |
330 | int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res) | |
331 | { | |
332 | int rc = release_resource(res); | |
333 | ||
334 | kfree(res); | |
335 | ||
336 | return rc; | |
337 | } | |
338 | ||
e5cabeb3 AB |
339 | /** |
340 | * rio_request_inb_pwrite - request inbound port-write message service | |
97ef6f74 | 341 | * @rdev: RIO device to which register inbound port-write callback routine |
e5cabeb3 AB |
342 | * @pwcback: Callback routine to execute when port-write is received |
343 | * | |
344 | * Binds a port-write callback function to the RapidIO device. | |
345 | * Returns 0 if the request has been satisfied. | |
346 | */ | |
347 | int rio_request_inb_pwrite(struct rio_dev *rdev, | |
348 | int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step)) | |
349 | { | |
350 | int rc = 0; | |
351 | ||
352 | spin_lock(&rio_global_list_lock); | |
353 | if (rdev->pwcback != NULL) | |
354 | rc = -ENOMEM; | |
355 | else | |
356 | rdev->pwcback = pwcback; | |
357 | ||
358 | spin_unlock(&rio_global_list_lock); | |
359 | return rc; | |
360 | } | |
361 | EXPORT_SYMBOL_GPL(rio_request_inb_pwrite); | |
362 | ||
363 | /** | |
364 | * rio_release_inb_pwrite - release inbound port-write message service | |
365 | * @rdev: RIO device which registered for inbound port-write callback | |
366 | * | |
367 | * Removes callback from the rio_dev structure. Returns 0 if the request | |
368 | * has been satisfied. | |
369 | */ | |
370 | int rio_release_inb_pwrite(struct rio_dev *rdev) | |
371 | { | |
372 | int rc = -ENOMEM; | |
373 | ||
374 | spin_lock(&rio_global_list_lock); | |
375 | if (rdev->pwcback) { | |
376 | rdev->pwcback = NULL; | |
377 | rc = 0; | |
378 | } | |
379 | ||
380 | spin_unlock(&rio_global_list_lock); | |
381 | return rc; | |
382 | } | |
383 | EXPORT_SYMBOL_GPL(rio_release_inb_pwrite); | |
384 | ||
385 | /** | |
386 | * rio_mport_get_physefb - Helper function that returns register offset | |
387 | * for Physical Layer Extended Features Block. | |
97ef6f74 RD |
388 | * @port: Master port to issue transaction |
389 | * @local: Indicate a local master port or remote device access | |
390 | * @destid: Destination ID of the device | |
391 | * @hopcount: Number of switch hops to the device | |
e5cabeb3 AB |
392 | */ |
393 | u32 | |
394 | rio_mport_get_physefb(struct rio_mport *port, int local, | |
395 | u16 destid, u8 hopcount) | |
396 | { | |
397 | u32 ext_ftr_ptr; | |
398 | u32 ftr_header; | |
399 | ||
400 | ext_ftr_ptr = rio_mport_get_efb(port, local, destid, hopcount, 0); | |
401 | ||
402 | while (ext_ftr_ptr) { | |
403 | if (local) | |
404 | rio_local_read_config_32(port, ext_ftr_ptr, | |
405 | &ftr_header); | |
406 | else | |
407 | rio_mport_read_config_32(port, destid, hopcount, | |
408 | ext_ftr_ptr, &ftr_header); | |
409 | ||
410 | ftr_header = RIO_GET_BLOCK_ID(ftr_header); | |
411 | switch (ftr_header) { | |
412 | ||
413 | case RIO_EFB_SER_EP_ID_V13P: | |
414 | case RIO_EFB_SER_EP_REC_ID_V13P: | |
415 | case RIO_EFB_SER_EP_FREE_ID_V13P: | |
416 | case RIO_EFB_SER_EP_ID: | |
417 | case RIO_EFB_SER_EP_REC_ID: | |
418 | case RIO_EFB_SER_EP_FREE_ID: | |
419 | case RIO_EFB_SER_EP_FREC_ID: | |
420 | ||
421 | return ext_ftr_ptr; | |
422 | ||
423 | default: | |
424 | break; | |
425 | } | |
426 | ||
427 | ext_ftr_ptr = rio_mport_get_efb(port, local, destid, | |
428 | hopcount, ext_ftr_ptr); | |
429 | } | |
430 | ||
431 | return ext_ftr_ptr; | |
432 | } | |
433 | ||
434 | /** | |
435 | * rio_get_comptag - Begin or continue searching for a RIO device by component tag | |
97ef6f74 | 436 | * @comp_tag: RIO component tag to match |
e5cabeb3 AB |
437 | * @from: Previous RIO device found in search, or %NULL for new search |
438 | * | |
439 | * Iterates through the list of known RIO devices. If a RIO device is | |
440 | * found with a matching @comp_tag, a pointer to its device | |
441 | * structure is returned. Otherwise, %NULL is returned. A new search | |
442 | * is initiated by passing %NULL to the @from argument. Otherwise, if | |
443 | * @from is not %NULL, searches continue from next device on the global | |
444 | * list. | |
445 | */ | |
af84ca38 | 446 | struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from) |
e5cabeb3 AB |
447 | { |
448 | struct list_head *n; | |
449 | struct rio_dev *rdev; | |
450 | ||
e5cabeb3 AB |
451 | spin_lock(&rio_global_list_lock); |
452 | n = from ? from->global_list.next : rio_devices.next; | |
453 | ||
454 | while (n && (n != &rio_devices)) { | |
455 | rdev = rio_dev_g(n); | |
456 | if (rdev->comp_tag == comp_tag) | |
457 | goto exit; | |
458 | n = n->next; | |
459 | } | |
460 | rdev = NULL; | |
461 | exit: | |
462 | spin_unlock(&rio_global_list_lock); | |
463 | return rdev; | |
464 | } | |
465 | ||
466 | /** | |
467 | * rio_set_port_lockout - Sets/clears LOCKOUT bit (RIO EM 1.3) for a switch port. | |
468 | * @rdev: Pointer to RIO device control structure | |
469 | * @pnum: Switch port number to set LOCKOUT bit | |
470 | * @lock: Operation : set (=1) or clear (=0) | |
471 | */ | |
472 | int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock) | |
473 | { | |
e5cabeb3 AB |
474 | u32 regval; |
475 | ||
a93192a5 | 476 | rio_read_config_32(rdev, |
e5cabeb3 AB |
477 | rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), |
478 | ®val); | |
479 | if (lock) | |
480 | regval |= RIO_PORT_N_CTL_LOCKOUT; | |
481 | else | |
482 | regval &= ~RIO_PORT_N_CTL_LOCKOUT; | |
483 | ||
a93192a5 | 484 | rio_write_config_32(rdev, |
e5cabeb3 AB |
485 | rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum), |
486 | regval); | |
487 | return 0; | |
488 | } | |
489 | ||
6429cd49 AB |
490 | /** |
491 | * rio_chk_dev_route - Validate route to the specified device. | |
492 | * @rdev: RIO device failed to respond | |
493 | * @nrdev: Last active device on the route to rdev | |
494 | * @npnum: nrdev's port number on the route to rdev | |
495 | * | |
496 | * Follows a route to the specified RIO device to determine the last available | |
497 | * device (and corresponding RIO port) on the route. | |
498 | */ | |
499 | static int | |
500 | rio_chk_dev_route(struct rio_dev *rdev, struct rio_dev **nrdev, int *npnum) | |
501 | { | |
502 | u32 result; | |
a93192a5 | 503 | int p_port, rc = -EIO; |
6429cd49 AB |
504 | struct rio_dev *prev = NULL; |
505 | ||
506 | /* Find switch with failed RIO link */ | |
507 | while (rdev->prev && (rdev->prev->pef & RIO_PEF_SWITCH)) { | |
508 | if (!rio_read_config_32(rdev->prev, RIO_DEV_ID_CAR, &result)) { | |
509 | prev = rdev->prev; | |
510 | break; | |
511 | } | |
512 | rdev = rdev->prev; | |
513 | } | |
514 | ||
515 | if (prev == NULL) | |
516 | goto err_out; | |
517 | ||
a93192a5 | 518 | p_port = prev->rswitch->route_table[rdev->destid]; |
6429cd49 | 519 | |
af84ca38 | 520 | if (p_port != RIO_INVALID_ROUTE) { |
6429cd49 AB |
521 | pr_debug("RIO: link failed on [%s]-P%d\n", |
522 | rio_name(prev), p_port); | |
523 | *nrdev = prev; | |
524 | *npnum = p_port; | |
525 | rc = 0; | |
526 | } else | |
af84ca38 | 527 | pr_debug("RIO: failed to trace route to %s\n", rio_name(rdev)); |
6429cd49 AB |
528 | err_out: |
529 | return rc; | |
530 | } | |
531 | ||
532 | /** | |
533 | * rio_mport_chk_dev_access - Validate access to the specified device. | |
534 | * @mport: Master port to send transactions | |
535 | * @destid: Device destination ID in network | |
536 | * @hopcount: Number of hops into the network | |
537 | */ | |
e274e0ed | 538 | int |
6429cd49 AB |
539 | rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount) |
540 | { | |
541 | int i = 0; | |
542 | u32 tmp; | |
543 | ||
544 | while (rio_mport_read_config_32(mport, destid, hopcount, | |
545 | RIO_DEV_ID_CAR, &tmp)) { | |
546 | i++; | |
547 | if (i == RIO_MAX_CHK_RETRY) | |
548 | return -EIO; | |
549 | mdelay(1); | |
550 | } | |
551 | ||
552 | return 0; | |
553 | } | |
554 | ||
555 | /** | |
556 | * rio_chk_dev_access - Validate access to the specified device. | |
557 | * @rdev: Pointer to RIO device control structure | |
558 | */ | |
559 | static int rio_chk_dev_access(struct rio_dev *rdev) | |
560 | { | |
a93192a5 AB |
561 | return rio_mport_chk_dev_access(rdev->net->hport, |
562 | rdev->destid, rdev->hopcount); | |
6429cd49 AB |
563 | } |
564 | ||
dd5648c9 AB |
565 | /** |
566 | * rio_get_input_status - Sends a Link-Request/Input-Status control symbol and | |
567 | * returns link-response (if requested). | |
568 | * @rdev: RIO devive to issue Input-status command | |
569 | * @pnum: Device port number to issue the command | |
570 | * @lnkresp: Response from a link partner | |
571 | */ | |
572 | static int | |
573 | rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp) | |
574 | { | |
dd5648c9 AB |
575 | u32 regval; |
576 | int checkcount; | |
577 | ||
578 | if (lnkresp) { | |
579 | /* Read from link maintenance response register | |
580 | * to clear valid bit */ | |
a93192a5 | 581 | rio_read_config_32(rdev, |
dd5648c9 AB |
582 | rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum), |
583 | ®val); | |
584 | udelay(50); | |
585 | } | |
586 | ||
587 | /* Issue Input-status command */ | |
a93192a5 | 588 | rio_write_config_32(rdev, |
dd5648c9 AB |
589 | rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum), |
590 | RIO_MNT_REQ_CMD_IS); | |
591 | ||
592 | /* Exit if the response is not expected */ | |
593 | if (lnkresp == NULL) | |
594 | return 0; | |
595 | ||
596 | checkcount = 3; | |
597 | while (checkcount--) { | |
598 | udelay(50); | |
a93192a5 | 599 | rio_read_config_32(rdev, |
dd5648c9 AB |
600 | rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum), |
601 | ®val); | |
602 | if (regval & RIO_PORT_N_MNT_RSP_RVAL) { | |
603 | *lnkresp = regval; | |
604 | return 0; | |
605 | } | |
606 | } | |
607 | ||
608 | return -EIO; | |
609 | } | |
610 | ||
611 | /** | |
612 | * rio_clr_err_stopped - Clears port Error-stopped states. | |
613 | * @rdev: Pointer to RIO device control structure | |
614 | * @pnum: Switch port number to clear errors | |
615 | * @err_status: port error status (if 0 reads register from device) | |
616 | */ | |
617 | static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status) | |
618 | { | |
dd5648c9 AB |
619 | struct rio_dev *nextdev = rdev->rswitch->nextdev[pnum]; |
620 | u32 regval; | |
621 | u32 far_ackid, far_linkstat, near_ackid; | |
622 | ||
623 | if (err_status == 0) | |
a93192a5 | 624 | rio_read_config_32(rdev, |
dd5648c9 AB |
625 | rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum), |
626 | &err_status); | |
627 | ||
628 | if (err_status & RIO_PORT_N_ERR_STS_PW_OUT_ES) { | |
629 | pr_debug("RIO_EM: servicing Output Error-Stopped state\n"); | |
630 | /* | |
631 | * Send a Link-Request/Input-Status control symbol | |
632 | */ | |
633 | if (rio_get_input_status(rdev, pnum, ®val)) { | |
634 | pr_debug("RIO_EM: Input-status response timeout\n"); | |
635 | goto rd_err; | |
636 | } | |
637 | ||
638 | pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n", | |
639 | pnum, regval); | |
640 | far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5; | |
641 | far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT; | |
a93192a5 | 642 | rio_read_config_32(rdev, |
dd5648c9 AB |
643 | rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum), |
644 | ®val); | |
645 | pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval); | |
646 | near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24; | |
647 | pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x" \ | |
648 | " near_ackID=0x%02x\n", | |
649 | pnum, far_ackid, far_linkstat, near_ackid); | |
650 | ||
651 | /* | |
652 | * If required, synchronize ackIDs of near and | |
653 | * far sides. | |
654 | */ | |
655 | if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8)) || | |
656 | (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) { | |
657 | /* Align near outstanding/outbound ackIDs with | |
658 | * far inbound. | |
659 | */ | |
a93192a5 AB |
660 | rio_write_config_32(rdev, |
661 | rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum), | |
dd5648c9 AB |
662 | (near_ackid << 24) | |
663 | (far_ackid << 8) | far_ackid); | |
664 | /* Align far outstanding/outbound ackIDs with | |
665 | * near inbound. | |
666 | */ | |
667 | far_ackid++; | |
668 | if (nextdev) | |
669 | rio_write_config_32(nextdev, | |
670 | nextdev->phys_efptr + | |
671 | RIO_PORT_N_ACK_STS_CSR(RIO_GET_PORT_NUM(nextdev->swpinfo)), | |
672 | (far_ackid << 24) | | |
673 | (near_ackid << 8) | near_ackid); | |
674 | else | |
675 | pr_debug("RIO_EM: Invalid nextdev pointer (NULL)\n"); | |
676 | } | |
677 | rd_err: | |
a93192a5 | 678 | rio_read_config_32(rdev, |
dd5648c9 AB |
679 | rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum), |
680 | &err_status); | |
681 | pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status); | |
682 | } | |
683 | ||
684 | if ((err_status & RIO_PORT_N_ERR_STS_PW_INP_ES) && nextdev) { | |
685 | pr_debug("RIO_EM: servicing Input Error-Stopped state\n"); | |
686 | rio_get_input_status(nextdev, | |
687 | RIO_GET_PORT_NUM(nextdev->swpinfo), NULL); | |
688 | udelay(50); | |
689 | ||
a93192a5 | 690 | rio_read_config_32(rdev, |
dd5648c9 AB |
691 | rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum), |
692 | &err_status); | |
693 | pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status); | |
694 | } | |
695 | ||
696 | return (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES | | |
697 | RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 1 : 0; | |
698 | } | |
699 | ||
e5cabeb3 AB |
700 | /** |
701 | * rio_inb_pwrite_handler - process inbound port-write message | |
702 | * @pw_msg: pointer to inbound port-write message | |
703 | * | |
704 | * Processes an inbound port-write message. Returns 0 if the request | |
705 | * has been satisfied. | |
706 | */ | |
707 | int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg) | |
708 | { | |
709 | struct rio_dev *rdev; | |
dd5648c9 | 710 | u32 err_status, em_perrdet, em_ltlerrdet; |
e5cabeb3 AB |
711 | int rc, portnum; |
712 | ||
e6536927 | 713 | rdev = rio_get_comptag((pw_msg->em.comptag & RIO_CTAG_UDEVID), NULL); |
e5cabeb3 | 714 | if (rdev == NULL) { |
6429cd49 AB |
715 | /* Device removed or enumeration error */ |
716 | pr_debug("RIO: %s No matching device for CTag 0x%08x\n", | |
e5cabeb3 AB |
717 | __func__, pw_msg->em.comptag); |
718 | return -EIO; | |
719 | } | |
720 | ||
721 | pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev)); | |
722 | ||
723 | #ifdef DEBUG_PW | |
724 | { | |
725 | u32 i; | |
726 | for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) { | |
dd5648c9 | 727 | pr_debug("0x%02x: %08x %08x %08x %08x\n", |
e5cabeb3 AB |
728 | i*4, pw_msg->raw[i], pw_msg->raw[i + 1], |
729 | pw_msg->raw[i + 2], pw_msg->raw[i + 3]); | |
730 | i += 4; | |
731 | } | |
e5cabeb3 AB |
732 | } |
733 | #endif | |
734 | ||
735 | /* Call an external service function (if such is registered | |
736 | * for this device). This may be the service for endpoints that send | |
737 | * device-specific port-write messages. End-point messages expected | |
738 | * to be handled completely by EP specific device driver. | |
739 | * For switches rc==0 signals that no standard processing required. | |
740 | */ | |
741 | if (rdev->pwcback != NULL) { | |
742 | rc = rdev->pwcback(rdev, pw_msg, 0); | |
743 | if (rc == 0) | |
744 | return 0; | |
745 | } | |
746 | ||
6429cd49 AB |
747 | portnum = pw_msg->em.is_port & 0xFF; |
748 | ||
749 | /* Check if device and route to it are functional: | |
750 | * Sometimes devices may send PW message(s) just before being | |
751 | * powered down (or link being lost). | |
752 | */ | |
753 | if (rio_chk_dev_access(rdev)) { | |
754 | pr_debug("RIO: device access failed - get link partner\n"); | |
755 | /* Scan route to the device and identify failed link. | |
756 | * This will replace device and port reported in PW message. | |
757 | * PW message should not be used after this point. | |
758 | */ | |
759 | if (rio_chk_dev_route(rdev, &rdev, &portnum)) { | |
760 | pr_err("RIO: Route trace for %s failed\n", | |
761 | rio_name(rdev)); | |
762 | return -EIO; | |
763 | } | |
764 | pw_msg = NULL; | |
765 | } | |
766 | ||
e5cabeb3 AB |
767 | /* For End-point devices processing stops here */ |
768 | if (!(rdev->pef & RIO_PEF_SWITCH)) | |
769 | return 0; | |
770 | ||
771 | if (rdev->phys_efptr == 0) { | |
772 | pr_err("RIO_PW: Bad switch initialization for %s\n", | |
773 | rio_name(rdev)); | |
774 | return 0; | |
775 | } | |
776 | ||
e5cabeb3 AB |
777 | /* |
778 | * Process the port-write notification from switch | |
779 | */ | |
e5cabeb3 AB |
780 | if (rdev->rswitch->em_handle) |
781 | rdev->rswitch->em_handle(rdev, portnum); | |
782 | ||
a93192a5 | 783 | rio_read_config_32(rdev, |
e5cabeb3 AB |
784 | rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), |
785 | &err_status); | |
786 | pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status); | |
787 | ||
dd5648c9 | 788 | if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) { |
e5cabeb3 | 789 | |
dd5648c9 AB |
790 | if (!(rdev->rswitch->port_ok & (1 << portnum))) { |
791 | rdev->rswitch->port_ok |= (1 << portnum); | |
792 | rio_set_port_lockout(rdev, portnum, 0); | |
793 | /* Schedule Insertion Service */ | |
794 | pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n", | |
795 | rio_name(rdev), portnum); | |
796 | } | |
e5cabeb3 | 797 | |
dd5648c9 AB |
798 | /* Clear error-stopped states (if reported). |
799 | * Depending on the link partner state, two attempts | |
800 | * may be needed for successful recovery. | |
801 | */ | |
802 | if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES | | |
803 | RIO_PORT_N_ERR_STS_PW_INP_ES)) { | |
804 | if (rio_clr_err_stopped(rdev, portnum, err_status)) | |
805 | rio_clr_err_stopped(rdev, portnum, 0); | |
806 | } | |
807 | } else { /* if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) */ | |
e5cabeb3 | 808 | |
dd5648c9 | 809 | if (rdev->rswitch->port_ok & (1 << portnum)) { |
e5cabeb3 AB |
810 | rdev->rswitch->port_ok &= ~(1 << portnum); |
811 | rio_set_port_lockout(rdev, portnum, 1); | |
812 | ||
a93192a5 | 813 | rio_write_config_32(rdev, |
e5cabeb3 AB |
814 | rdev->phys_efptr + |
815 | RIO_PORT_N_ACK_STS_CSR(portnum), | |
816 | RIO_PORT_N_ACK_CLEAR); | |
817 | ||
818 | /* Schedule Extraction Service */ | |
819 | pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n", | |
820 | rio_name(rdev), portnum); | |
821 | } | |
dd5648c9 | 822 | } |
e5cabeb3 | 823 | |
a93192a5 | 824 | rio_read_config_32(rdev, |
dd5648c9 AB |
825 | rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet); |
826 | if (em_perrdet) { | |
827 | pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n", | |
828 | portnum, em_perrdet); | |
829 | /* Clear EM Port N Error Detect CSR */ | |
a93192a5 | 830 | rio_write_config_32(rdev, |
dd5648c9 AB |
831 | rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0); |
832 | } | |
833 | ||
a93192a5 | 834 | rio_read_config_32(rdev, |
dd5648c9 AB |
835 | rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet); |
836 | if (em_ltlerrdet) { | |
837 | pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n", | |
838 | em_ltlerrdet); | |
839 | /* Clear EM L/T Layer Error Detect CSR */ | |
a93192a5 | 840 | rio_write_config_32(rdev, |
dd5648c9 | 841 | rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0); |
e5cabeb3 AB |
842 | } |
843 | ||
388c45cc | 844 | /* Clear remaining error bits and Port-Write Pending bit */ |
a93192a5 | 845 | rio_write_config_32(rdev, |
dd5648c9 | 846 | rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum), |
388c45cc | 847 | err_status); |
e5cabeb3 AB |
848 | |
849 | return 0; | |
850 | } | |
851 | EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler); | |
852 | ||
853 | /** | |
854 | * rio_mport_get_efb - get pointer to next extended features block | |
855 | * @port: Master port to issue transaction | |
856 | * @local: Indicate a local master port or remote device access | |
857 | * @destid: Destination ID of the device | |
858 | * @hopcount: Number of switch hops to the device | |
859 | * @from: Offset of current Extended Feature block header (if 0 starts | |
860 | * from ExtFeaturePtr) | |
861 | */ | |
862 | u32 | |
863 | rio_mport_get_efb(struct rio_mport *port, int local, u16 destid, | |
864 | u8 hopcount, u32 from) | |
865 | { | |
866 | u32 reg_val; | |
867 | ||
868 | if (from == 0) { | |
869 | if (local) | |
870 | rio_local_read_config_32(port, RIO_ASM_INFO_CAR, | |
871 | ®_val); | |
872 | else | |
873 | rio_mport_read_config_32(port, destid, hopcount, | |
874 | RIO_ASM_INFO_CAR, ®_val); | |
875 | return reg_val & RIO_EXT_FTR_PTR_MASK; | |
876 | } else { | |
877 | if (local) | |
878 | rio_local_read_config_32(port, from, ®_val); | |
879 | else | |
880 | rio_mport_read_config_32(port, destid, hopcount, | |
881 | from, ®_val); | |
882 | return RIO_GET_BLOCK_ID(reg_val); | |
883 | } | |
884 | } | |
885 | ||
394b701c MP |
886 | /** |
887 | * rio_mport_get_feature - query for devices' extended features | |
888 | * @port: Master port to issue transaction | |
889 | * @local: Indicate a local master port or remote device access | |
890 | * @destid: Destination ID of the device | |
891 | * @hopcount: Number of switch hops to the device | |
892 | * @ftr: Extended feature code | |
893 | * | |
894 | * Tell if a device supports a given RapidIO capability. | |
895 | * Returns the offset of the requested extended feature | |
896 | * block within the device's RIO configuration space or | |
897 | * 0 in case the device does not support it. Possible | |
898 | * values for @ftr: | |
899 | * | |
900 | * %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices | |
901 | * | |
902 | * %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices | |
903 | * | |
904 | * %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices | |
905 | * | |
906 | * %RIO_EFB_SER_EP_ID LP/Serial EP Devices | |
907 | * | |
908 | * %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices | |
909 | * | |
910 | * %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices | |
911 | */ | |
912 | u32 | |
913 | rio_mport_get_feature(struct rio_mport * port, int local, u16 destid, | |
914 | u8 hopcount, int ftr) | |
915 | { | |
916 | u32 asm_info, ext_ftr_ptr, ftr_header; | |
917 | ||
918 | if (local) | |
919 | rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info); | |
920 | else | |
921 | rio_mport_read_config_32(port, destid, hopcount, | |
922 | RIO_ASM_INFO_CAR, &asm_info); | |
923 | ||
924 | ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK; | |
925 | ||
926 | while (ext_ftr_ptr) { | |
927 | if (local) | |
928 | rio_local_read_config_32(port, ext_ftr_ptr, | |
929 | &ftr_header); | |
930 | else | |
931 | rio_mport_read_config_32(port, destid, hopcount, | |
932 | ext_ftr_ptr, &ftr_header); | |
933 | if (RIO_GET_BLOCK_ID(ftr_header) == ftr) | |
934 | return ext_ftr_ptr; | |
935 | if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header))) | |
936 | break; | |
937 | } | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
942 | /** | |
943 | * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did | |
944 | * @vid: RIO vid to match or %RIO_ANY_ID to match all vids | |
945 | * @did: RIO did to match or %RIO_ANY_ID to match all dids | |
946 | * @asm_vid: RIO asm_vid to match or %RIO_ANY_ID to match all asm_vids | |
947 | * @asm_did: RIO asm_did to match or %RIO_ANY_ID to match all asm_dids | |
948 | * @from: Previous RIO device found in search, or %NULL for new search | |
949 | * | |
950 | * Iterates through the list of known RIO devices. If a RIO device is | |
951 | * found with a matching @vid, @did, @asm_vid, @asm_did, the reference | |
952 | * count to the device is incrememted and a pointer to its device | |
953 | * structure is returned. Otherwise, %NULL is returned. A new search | |
954 | * is initiated by passing %NULL to the @from argument. Otherwise, if | |
955 | * @from is not %NULL, searches continue from next device on the global | |
956 | * list. The reference count for @from is always decremented if it is | |
957 | * not %NULL. | |
958 | */ | |
959 | struct rio_dev *rio_get_asm(u16 vid, u16 did, | |
960 | u16 asm_vid, u16 asm_did, struct rio_dev *from) | |
961 | { | |
962 | struct list_head *n; | |
963 | struct rio_dev *rdev; | |
964 | ||
965 | WARN_ON(in_interrupt()); | |
966 | spin_lock(&rio_global_list_lock); | |
967 | n = from ? from->global_list.next : rio_devices.next; | |
968 | ||
969 | while (n && (n != &rio_devices)) { | |
970 | rdev = rio_dev_g(n); | |
971 | if ((vid == RIO_ANY_ID || rdev->vid == vid) && | |
972 | (did == RIO_ANY_ID || rdev->did == did) && | |
973 | (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) && | |
974 | (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did)) | |
975 | goto exit; | |
976 | n = n->next; | |
977 | } | |
978 | rdev = NULL; | |
979 | exit: | |
980 | rio_dev_put(from); | |
981 | rdev = rio_dev_get(rdev); | |
982 | spin_unlock(&rio_global_list_lock); | |
983 | return rdev; | |
984 | } | |
985 | ||
986 | /** | |
987 | * rio_get_device - Begin or continue searching for a RIO device by vid/did | |
988 | * @vid: RIO vid to match or %RIO_ANY_ID to match all vids | |
989 | * @did: RIO did to match or %RIO_ANY_ID to match all dids | |
990 | * @from: Previous RIO device found in search, or %NULL for new search | |
991 | * | |
992 | * Iterates through the list of known RIO devices. If a RIO device is | |
993 | * found with a matching @vid and @did, the reference count to the | |
994 | * device is incrememted and a pointer to its device structure is returned. | |
995 | * Otherwise, %NULL is returned. A new search is initiated by passing %NULL | |
996 | * to the @from argument. Otherwise, if @from is not %NULL, searches | |
997 | * continue from next device on the global list. The reference count for | |
998 | * @from is always decremented if it is not %NULL. | |
999 | */ | |
1000 | struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from) | |
1001 | { | |
1002 | return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from); | |
1003 | } | |
1004 | ||
07590ff0 AB |
1005 | /** |
1006 | * rio_std_route_add_entry - Add switch route table entry using standard | |
1007 | * registers defined in RIO specification rev.1.3 | |
1008 | * @mport: Master port to issue transaction | |
1009 | * @destid: Destination ID of the device | |
1010 | * @hopcount: Number of switch hops to the device | |
1011 | * @table: routing table ID (global or port-specific) | |
1012 | * @route_destid: destID entry in the RT | |
1013 | * @route_port: destination port for specified destID | |
1014 | */ | |
1015 | int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
1016 | u16 table, u16 route_destid, u8 route_port) | |
1017 | { | |
1018 | if (table == RIO_GLOBAL_TABLE) { | |
1019 | rio_mport_write_config_32(mport, destid, hopcount, | |
1020 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, | |
1021 | (u32)route_destid); | |
1022 | rio_mport_write_config_32(mport, destid, hopcount, | |
1023 | RIO_STD_RTE_CONF_PORT_SEL_CSR, | |
1024 | (u32)route_port); | |
1025 | } | |
e5cabeb3 | 1026 | |
07590ff0 AB |
1027 | udelay(10); |
1028 | return 0; | |
1029 | } | |
1030 | ||
1031 | /** | |
1032 | * rio_std_route_get_entry - Read switch route table entry (port number) | |
638c5945 | 1033 | * associated with specified destID using standard registers defined in RIO |
07590ff0 AB |
1034 | * specification rev.1.3 |
1035 | * @mport: Master port to issue transaction | |
1036 | * @destid: Destination ID of the device | |
1037 | * @hopcount: Number of switch hops to the device | |
1038 | * @table: routing table ID (global or port-specific) | |
1039 | * @route_destid: destID entry in the RT | |
1040 | * @route_port: returned destination port for specified destID | |
1041 | */ | |
1042 | int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, | |
1043 | u16 table, u16 route_destid, u8 *route_port) | |
1044 | { | |
1045 | u32 result; | |
1046 | ||
1047 | if (table == RIO_GLOBAL_TABLE) { | |
1048 | rio_mport_write_config_32(mport, destid, hopcount, | |
1049 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid); | |
1050 | rio_mport_read_config_32(mport, destid, hopcount, | |
1051 | RIO_STD_RTE_CONF_PORT_SEL_CSR, &result); | |
1052 | ||
1053 | *route_port = (u8)result; | |
1054 | } | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | /** | |
1060 | * rio_std_route_clr_table - Clear swotch route table using standard registers | |
1061 | * defined in RIO specification rev.1.3. | |
1062 | * @mport: Master port to issue transaction | |
07590ff0 AB |
1063 | * @destid: Destination ID of the device |
1064 | * @hopcount: Number of switch hops to the device | |
1065 | * @table: routing table ID (global or port-specific) | |
1066 | */ | |
1067 | int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount, | |
1068 | u16 table) | |
1069 | { | |
1070 | u32 max_destid = 0xff; | |
1071 | u32 i, pef, id_inc = 1, ext_cfg = 0; | |
1072 | u32 port_sel = RIO_INVALID_ROUTE; | |
1073 | ||
1074 | if (table == RIO_GLOBAL_TABLE) { | |
1075 | rio_mport_read_config_32(mport, destid, hopcount, | |
1076 | RIO_PEF_CAR, &pef); | |
1077 | ||
1078 | if (mport->sys_size) { | |
1079 | rio_mport_read_config_32(mport, destid, hopcount, | |
1080 | RIO_SWITCH_RT_LIMIT, | |
1081 | &max_destid); | |
1082 | max_destid &= RIO_RT_MAX_DESTID; | |
1083 | } | |
1084 | ||
1085 | if (pef & RIO_PEF_EXT_RT) { | |
1086 | ext_cfg = 0x80000000; | |
1087 | id_inc = 4; | |
1088 | port_sel = (RIO_INVALID_ROUTE << 24) | | |
1089 | (RIO_INVALID_ROUTE << 16) | | |
1090 | (RIO_INVALID_ROUTE << 8) | | |
1091 | RIO_INVALID_ROUTE; | |
1092 | } | |
1093 | ||
1094 | for (i = 0; i <= max_destid;) { | |
1095 | rio_mport_write_config_32(mport, destid, hopcount, | |
1096 | RIO_STD_RTE_CONF_DESTID_SEL_CSR, | |
1097 | ext_cfg | i); | |
1098 | rio_mport_write_config_32(mport, destid, hopcount, | |
1099 | RIO_STD_RTE_CONF_PORT_SEL_CSR, | |
1100 | port_sel); | |
1101 | i += id_inc; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | udelay(10); | |
1106 | return 0; | |
1107 | } | |
1108 | ||
394b701c MP |
1109 | static void rio_fixup_device(struct rio_dev *dev) |
1110 | { | |
1111 | } | |
1112 | ||
1113 | static int __devinit rio_init(void) | |
1114 | { | |
1115 | struct rio_dev *dev = NULL; | |
1116 | ||
1117 | while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) { | |
1118 | rio_fixup_device(dev); | |
1119 | } | |
1120 | return 0; | |
1121 | } | |
1122 | ||
1123 | device_initcall(rio_init); | |
1124 | ||
37d33d15 | 1125 | int __devinit rio_init_mports(void) |
394b701c MP |
1126 | { |
1127 | int rc = 0; | |
1128 | struct rio_mport *port; | |
1129 | ||
1130 | list_for_each_entry(port, &rio_mports, node) { | |
1131 | if (!request_mem_region(port->iores.start, | |
88cf81fc | 1132 | resource_size(&port->iores), |
394b701c MP |
1133 | port->name)) { |
1134 | printk(KERN_ERR | |
5febf1cd | 1135 | "RIO: Error requesting master port region 0x%016llx-0x%016llx\n", |
88cf81fc | 1136 | (u64)port->iores.start, (u64)port->iores.end); |
394b701c MP |
1137 | rc = -ENOMEM; |
1138 | goto out; | |
1139 | } | |
1140 | ||
1141 | if (port->host_deviceid >= 0) | |
1142 | rio_enum_mport(port); | |
1143 | else | |
1144 | rio_disc_mport(port); | |
1145 | } | |
1146 | ||
1147 | out: | |
1148 | return rc; | |
1149 | } | |
1150 | ||
1151 | void rio_register_mport(struct rio_mport *port) | |
1152 | { | |
1153 | list_add_tail(&port->node, &rio_mports); | |
1154 | } | |
1155 | ||
1156 | EXPORT_SYMBOL_GPL(rio_local_get_device_id); | |
1157 | EXPORT_SYMBOL_GPL(rio_get_device); | |
1158 | EXPORT_SYMBOL_GPL(rio_get_asm); | |
1159 | EXPORT_SYMBOL_GPL(rio_request_inb_dbell); | |
1160 | EXPORT_SYMBOL_GPL(rio_release_inb_dbell); | |
1161 | EXPORT_SYMBOL_GPL(rio_request_outb_dbell); | |
1162 | EXPORT_SYMBOL_GPL(rio_release_outb_dbell); | |
1163 | EXPORT_SYMBOL_GPL(rio_request_inb_mbox); | |
1164 | EXPORT_SYMBOL_GPL(rio_release_inb_mbox); | |
1165 | EXPORT_SYMBOL_GPL(rio_request_outb_mbox); | |
1166 | EXPORT_SYMBOL_GPL(rio_release_outb_mbox); |