blob: 7f18a65c4ed05576e4f742769defa8e2acae4c2a [file] [log] [blame]
Matt Porter394b7012005-11-07 01:00:15 -08001/*
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 *
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -07008 * Copyright 2009 Integrated Device Technology, Inc.
9 * Alex Bounine <alexandre.bounine@idt.com>
10 * - Added Port-Write/Error Management initialization and handling
11 *
Matt Porter394b7012005-11-07 01:00:15 -080012 * 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
Matt Porter394b7012005-11-07 01:00:15 -080018#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>
Tim Schmielaude259682006-01-08 01:02:05 -080029#include <linux/slab.h>
Kumar Gala5febf1c2008-01-23 05:53:47 -060030#include <linux/interrupt.h>
Matt Porter394b7012005-11-07 01:00:15 -080031
32#include "rio.h"
33
34static 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 */
44u16 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
Zhang Weie0423232008-04-18 13:33:42 -070050 return (RIO_GET_DID(port->sys_size, result));
Matt Porter394b7012005-11-07 01:00:15 -080051}
52
53/**
54 * rio_request_inb_mbox - request inbound mailbox service
55 * @mport: RIO master port from which to allocate the mailbox resource
Matt Porter6978bbc2005-11-07 01:00:20 -080056 * @dev_id: Device specific pointer to pass on event
Matt Porter394b7012005-11-07 01:00:15 -080057 * @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 */
64int rio_request_inb_mbox(struct rio_mport *mport,
Matt Porter6978bbc2005-11-07 01:00:20 -080065 void *dev_id,
Matt Porter394b7012005-11-07 01:00:15 -080066 int mbox,
67 int entries,
Matt Porter6978bbc2005-11-07 01:00:20 -080068 void (*minb) (struct rio_mport * mport, void *dev_id, int mbox,
Matt Porter394b7012005-11-07 01:00:15 -080069 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
Matt Porter6978bbc2005-11-07 01:00:20 -080091 rc = rio_open_inb_mbox(mport, dev_id, mbox, entries);
Matt Porter394b7012005-11-07 01:00:15 -080092 } 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 */
107int 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
Matt Porter6978bbc2005-11-07 01:00:20 -0800118 * @dev_id: Device specific pointer to pass on event
Matt Porter394b7012005-11-07 01:00:15 -0800119 * @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 */
126int rio_request_outb_mbox(struct rio_mport *mport,
Matt Porter6978bbc2005-11-07 01:00:20 -0800127 void *dev_id,
Matt Porter394b7012005-11-07 01:00:15 -0800128 int mbox,
129 int entries,
Matt Porter6978bbc2005-11-07 01:00:20 -0800130 void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot))
Matt Porter394b7012005-11-07 01:00:15 -0800131{
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
Matt Porter6978bbc2005-11-07 01:00:20 -0800152 rc = rio_open_outb_mbox(mport, dev_id, mbox, entries);
Matt Porter394b7012005-11-07 01:00:15 -0800153 } 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 */
168int 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
Matt Porter6978bbc2005-11-07 01:00:20 -0800179 * @dev_id: Device specific pointer to pass on event
Matt Porter394b7012005-11-07 01:00:15 -0800180 * @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 */
187static int
Matt Porter6978bbc2005-11-07 01:00:20 -0800188rio_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,
Matt Porter394b7012005-11-07 01:00:15 -0800190 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;
Matt Porter6978bbc2005-11-07 01:00:20 -0800202 dbell->dev_id = dev_id;
Matt Porter394b7012005-11-07 01:00:15 -0800203
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
Matt Porter6978bbc2005-11-07 01:00:20 -0800213 * @dev_id: Device specific pointer to pass on event
Matt Porter394b7012005-11-07 01:00:15 -0800214 * @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 */
222int rio_request_inb_dbell(struct rio_mport *mport,
Matt Porter6978bbc2005-11-07 01:00:20 -0800223 void *dev_id,
Matt Porter394b7012005-11-07 01:00:15 -0800224 u16 start,
225 u16 end,
Matt Porter6978bbc2005-11-07 01:00:20 -0800226 void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src,
Matt Porter394b7012005-11-07 01:00:15 -0800227 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 */
Matt Porter6978bbc2005-11-07 01:00:20 -0800245 rc = rio_setup_inb_dbell(mport, dev_id, res, dinb);
Matt Porter394b7012005-11-07 01:00:15 -0800246 } 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 */
263int 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 */
303struct 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 */
330int 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
339/**
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700340 * rio_request_inb_pwrite - request inbound port-write message service
Randy Dunlap97ef6f72010-05-28 15:08:08 -0700341 * @rdev: RIO device to which register inbound port-write callback routine
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700342 * @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 */
347int 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}
361EXPORT_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 */
370int 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}
383EXPORT_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.
Randy Dunlap97ef6f72010-05-28 15:08:08 -0700388 * @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
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700392 */
393u32
394rio_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
Randy Dunlap97ef6f72010-05-28 15:08:08 -0700436 * @comp_tag: RIO component tag to match
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700437 * @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 */
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700446struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from)
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700447{
448 struct list_head *n;
449 struct rio_dev *rdev;
450
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700451 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;
461exit:
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 */
472int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
473{
474 u8 hopcount = 0xff;
475 u16 destid = rdev->destid;
476 u32 regval;
477
478 if (rdev->rswitch) {
479 destid = rdev->rswitch->destid;
480 hopcount = rdev->rswitch->hopcount;
481 }
482
483 rio_mport_read_config_32(rdev->net->hport, destid, hopcount,
484 rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
485 &regval);
486 if (lock)
487 regval |= RIO_PORT_N_CTL_LOCKOUT;
488 else
489 regval &= ~RIO_PORT_N_CTL_LOCKOUT;
490
491 rio_mport_write_config_32(rdev->net->hport, destid, hopcount,
492 rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
493 regval);
494 return 0;
495}
496
497/**
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700498 * rio_chk_dev_route - Validate route to the specified device.
499 * @rdev: RIO device failed to respond
500 * @nrdev: Last active device on the route to rdev
501 * @npnum: nrdev's port number on the route to rdev
502 *
503 * Follows a route to the specified RIO device to determine the last available
504 * device (and corresponding RIO port) on the route.
505 */
506static int
507rio_chk_dev_route(struct rio_dev *rdev, struct rio_dev **nrdev, int *npnum)
508{
509 u32 result;
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700510 int p_port, dstid, rc = -EIO;
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700511 struct rio_dev *prev = NULL;
512
513 /* Find switch with failed RIO link */
514 while (rdev->prev && (rdev->prev->pef & RIO_PEF_SWITCH)) {
515 if (!rio_read_config_32(rdev->prev, RIO_DEV_ID_CAR, &result)) {
516 prev = rdev->prev;
517 break;
518 }
519 rdev = rdev->prev;
520 }
521
522 if (prev == NULL)
523 goto err_out;
524
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700525 dstid = (rdev->pef & RIO_PEF_SWITCH) ?
526 rdev->rswitch->destid : rdev->destid;
527 p_port = prev->rswitch->route_table[dstid];
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700528
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700529 if (p_port != RIO_INVALID_ROUTE) {
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700530 pr_debug("RIO: link failed on [%s]-P%d\n",
531 rio_name(prev), p_port);
532 *nrdev = prev;
533 *npnum = p_port;
534 rc = 0;
535 } else
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700536 pr_debug("RIO: failed to trace route to %s\n", rio_name(rdev));
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700537err_out:
538 return rc;
539}
540
541/**
542 * rio_mport_chk_dev_access - Validate access to the specified device.
543 * @mport: Master port to send transactions
544 * @destid: Device destination ID in network
545 * @hopcount: Number of hops into the network
546 */
Alexandre Bouninee274e0e2010-10-27 15:34:32 -0700547int
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700548rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount)
549{
550 int i = 0;
551 u32 tmp;
552
553 while (rio_mport_read_config_32(mport, destid, hopcount,
554 RIO_DEV_ID_CAR, &tmp)) {
555 i++;
556 if (i == RIO_MAX_CHK_RETRY)
557 return -EIO;
558 mdelay(1);
559 }
560
561 return 0;
562}
563
564/**
565 * rio_chk_dev_access - Validate access to the specified device.
566 * @rdev: Pointer to RIO device control structure
567 */
568static int rio_chk_dev_access(struct rio_dev *rdev)
569{
570 u8 hopcount = 0xff;
571 u16 destid = rdev->destid;
572
573 if (rdev->rswitch) {
574 destid = rdev->rswitch->destid;
575 hopcount = rdev->rswitch->hopcount;
576 }
577
578 return rio_mport_chk_dev_access(rdev->net->hport, destid, hopcount);
579}
580
581/**
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700582 * rio_get_input_status - Sends a Link-Request/Input-Status control symbol and
583 * returns link-response (if requested).
584 * @rdev: RIO devive to issue Input-status command
585 * @pnum: Device port number to issue the command
586 * @lnkresp: Response from a link partner
587 */
588static int
589rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
590{
591 struct rio_mport *mport = rdev->net->hport;
592 u16 destid = rdev->rswitch->destid;
593 u8 hopcount = rdev->rswitch->hopcount;
594 u32 regval;
595 int checkcount;
596
597 if (lnkresp) {
598 /* Read from link maintenance response register
599 * to clear valid bit */
600 rio_mport_read_config_32(mport, destid, hopcount,
601 rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
602 &regval);
603 udelay(50);
604 }
605
606 /* Issue Input-status command */
607 rio_mport_write_config_32(mport, destid, hopcount,
608 rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum),
609 RIO_MNT_REQ_CMD_IS);
610
611 /* Exit if the response is not expected */
612 if (lnkresp == NULL)
613 return 0;
614
615 checkcount = 3;
616 while (checkcount--) {
617 udelay(50);
618 rio_mport_read_config_32(mport, destid, hopcount,
619 rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
620 &regval);
621 if (regval & RIO_PORT_N_MNT_RSP_RVAL) {
622 *lnkresp = regval;
623 return 0;
624 }
625 }
626
627 return -EIO;
628}
629
630/**
631 * rio_clr_err_stopped - Clears port Error-stopped states.
632 * @rdev: Pointer to RIO device control structure
633 * @pnum: Switch port number to clear errors
634 * @err_status: port error status (if 0 reads register from device)
635 */
636static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
637{
638 struct rio_mport *mport = rdev->net->hport;
639 u16 destid = rdev->rswitch->destid;
640 u8 hopcount = rdev->rswitch->hopcount;
641 struct rio_dev *nextdev = rdev->rswitch->nextdev[pnum];
642 u32 regval;
643 u32 far_ackid, far_linkstat, near_ackid;
644
645 if (err_status == 0)
646 rio_mport_read_config_32(mport, destid, hopcount,
647 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
648 &err_status);
649
650 if (err_status & RIO_PORT_N_ERR_STS_PW_OUT_ES) {
651 pr_debug("RIO_EM: servicing Output Error-Stopped state\n");
652 /*
653 * Send a Link-Request/Input-Status control symbol
654 */
655 if (rio_get_input_status(rdev, pnum, &regval)) {
656 pr_debug("RIO_EM: Input-status response timeout\n");
657 goto rd_err;
658 }
659
660 pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n",
661 pnum, regval);
662 far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5;
663 far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT;
664 rio_mport_read_config_32(mport, destid, hopcount,
665 rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
666 &regval);
667 pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval);
668 near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24;
669 pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x" \
670 " near_ackID=0x%02x\n",
671 pnum, far_ackid, far_linkstat, near_ackid);
672
673 /*
674 * If required, synchronize ackIDs of near and
675 * far sides.
676 */
677 if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8)) ||
678 (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) {
679 /* Align near outstanding/outbound ackIDs with
680 * far inbound.
681 */
682 rio_mport_write_config_32(mport, destid,
683 hopcount, rdev->phys_efptr +
684 RIO_PORT_N_ACK_STS_CSR(pnum),
685 (near_ackid << 24) |
686 (far_ackid << 8) | far_ackid);
687 /* Align far outstanding/outbound ackIDs with
688 * near inbound.
689 */
690 far_ackid++;
691 if (nextdev)
692 rio_write_config_32(nextdev,
693 nextdev->phys_efptr +
694 RIO_PORT_N_ACK_STS_CSR(RIO_GET_PORT_NUM(nextdev->swpinfo)),
695 (far_ackid << 24) |
696 (near_ackid << 8) | near_ackid);
697 else
698 pr_debug("RIO_EM: Invalid nextdev pointer (NULL)\n");
699 }
700rd_err:
701 rio_mport_read_config_32(mport, destid, hopcount,
702 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
703 &err_status);
704 pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
705 }
706
707 if ((err_status & RIO_PORT_N_ERR_STS_PW_INP_ES) && nextdev) {
708 pr_debug("RIO_EM: servicing Input Error-Stopped state\n");
709 rio_get_input_status(nextdev,
710 RIO_GET_PORT_NUM(nextdev->swpinfo), NULL);
711 udelay(50);
712
713 rio_mport_read_config_32(mport, destid, hopcount,
714 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
715 &err_status);
716 pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
717 }
718
719 return (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
720 RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 1 : 0;
721}
722
723/**
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700724 * rio_inb_pwrite_handler - process inbound port-write message
725 * @pw_msg: pointer to inbound port-write message
726 *
727 * Processes an inbound port-write message. Returns 0 if the request
728 * has been satisfied.
729 */
730int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
731{
732 struct rio_dev *rdev;
733 struct rio_mport *mport;
734 u8 hopcount;
735 u16 destid;
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700736 u32 err_status, em_perrdet, em_ltlerrdet;
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700737 int rc, portnum;
738
739 rdev = rio_get_comptag(pw_msg->em.comptag, NULL);
740 if (rdev == NULL) {
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700741 /* Device removed or enumeration error */
742 pr_debug("RIO: %s No matching device for CTag 0x%08x\n",
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700743 __func__, pw_msg->em.comptag);
744 return -EIO;
745 }
746
747 pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev));
748
749#ifdef DEBUG_PW
750 {
751 u32 i;
752 for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) {
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700753 pr_debug("0x%02x: %08x %08x %08x %08x\n",
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700754 i*4, pw_msg->raw[i], pw_msg->raw[i + 1],
755 pw_msg->raw[i + 2], pw_msg->raw[i + 3]);
756 i += 4;
757 }
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700758 }
759#endif
760
761 /* Call an external service function (if such is registered
762 * for this device). This may be the service for endpoints that send
763 * device-specific port-write messages. End-point messages expected
764 * to be handled completely by EP specific device driver.
765 * For switches rc==0 signals that no standard processing required.
766 */
767 if (rdev->pwcback != NULL) {
768 rc = rdev->pwcback(rdev, pw_msg, 0);
769 if (rc == 0)
770 return 0;
771 }
772
Alexandre Bounine6429cd42010-10-27 15:34:32 -0700773 portnum = pw_msg->em.is_port & 0xFF;
774
775 /* Check if device and route to it are functional:
776 * Sometimes devices may send PW message(s) just before being
777 * powered down (or link being lost).
778 */
779 if (rio_chk_dev_access(rdev)) {
780 pr_debug("RIO: device access failed - get link partner\n");
781 /* Scan route to the device and identify failed link.
782 * This will replace device and port reported in PW message.
783 * PW message should not be used after this point.
784 */
785 if (rio_chk_dev_route(rdev, &rdev, &portnum)) {
786 pr_err("RIO: Route trace for %s failed\n",
787 rio_name(rdev));
788 return -EIO;
789 }
790 pw_msg = NULL;
791 }
792
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700793 /* For End-point devices processing stops here */
794 if (!(rdev->pef & RIO_PEF_SWITCH))
795 return 0;
796
797 if (rdev->phys_efptr == 0) {
798 pr_err("RIO_PW: Bad switch initialization for %s\n",
799 rio_name(rdev));
800 return 0;
801 }
802
803 mport = rdev->net->hport;
804 destid = rdev->rswitch->destid;
805 hopcount = rdev->rswitch->hopcount;
806
807 /*
808 * Process the port-write notification from switch
809 */
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700810 if (rdev->rswitch->em_handle)
811 rdev->rswitch->em_handle(rdev, portnum);
812
813 rio_mport_read_config_32(mport, destid, hopcount,
814 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
815 &err_status);
816 pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status);
817
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700818 if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700819
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700820 if (!(rdev->rswitch->port_ok & (1 << portnum))) {
821 rdev->rswitch->port_ok |= (1 << portnum);
822 rio_set_port_lockout(rdev, portnum, 0);
823 /* Schedule Insertion Service */
824 pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n",
825 rio_name(rdev), portnum);
826 }
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700827
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700828 /* Clear error-stopped states (if reported).
829 * Depending on the link partner state, two attempts
830 * may be needed for successful recovery.
831 */
832 if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
833 RIO_PORT_N_ERR_STS_PW_INP_ES)) {
834 if (rio_clr_err_stopped(rdev, portnum, err_status))
835 rio_clr_err_stopped(rdev, portnum, 0);
836 }
837 } else { /* if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) */
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700838
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700839 if (rdev->rswitch->port_ok & (1 << portnum)) {
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700840 rdev->rswitch->port_ok &= ~(1 << portnum);
841 rio_set_port_lockout(rdev, portnum, 1);
842
843 rio_mport_write_config_32(mport, destid, hopcount,
844 rdev->phys_efptr +
845 RIO_PORT_N_ACK_STS_CSR(portnum),
846 RIO_PORT_N_ACK_CLEAR);
847
848 /* Schedule Extraction Service */
849 pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n",
850 rio_name(rdev), portnum);
851 }
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700852 }
853
Alexandre Bouninedd5648c2010-10-27 15:34:30 -0700854 rio_mport_read_config_32(mport, destid, hopcount,
855 rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
856 if (em_perrdet) {
857 pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n",
858 portnum, em_perrdet);
859 /* Clear EM Port N Error Detect CSR */
860 rio_mport_write_config_32(mport, destid, hopcount,
861 rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0);
862 }
863
864 rio_mport_read_config_32(mport, destid, hopcount,
865 rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
866 if (em_ltlerrdet) {
867 pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n",
868 em_ltlerrdet);
869 /* Clear EM L/T Layer Error Detect CSR */
870 rio_mport_write_config_32(mport, destid, hopcount,
871 rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0);
872 }
873
874 /* Clear remaining error bits */
875 rio_mport_write_config_32(mport, destid, hopcount,
876 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
877 err_status & RIO_PORT_N_ERR_STS_CLR_MASK);
878
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700879 /* Clear Port-Write Pending bit */
880 rio_mport_write_config_32(mport, destid, hopcount,
881 rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
882 RIO_PORT_N_ERR_STS_PW_PEND);
883
884 return 0;
885}
886EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler);
887
888/**
889 * rio_mport_get_efb - get pointer to next extended features block
890 * @port: Master port to issue transaction
891 * @local: Indicate a local master port or remote device access
892 * @destid: Destination ID of the device
893 * @hopcount: Number of switch hops to the device
894 * @from: Offset of current Extended Feature block header (if 0 starts
895 * from ExtFeaturePtr)
896 */
897u32
898rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
899 u8 hopcount, u32 from)
900{
901 u32 reg_val;
902
903 if (from == 0) {
904 if (local)
905 rio_local_read_config_32(port, RIO_ASM_INFO_CAR,
906 &reg_val);
907 else
908 rio_mport_read_config_32(port, destid, hopcount,
909 RIO_ASM_INFO_CAR, &reg_val);
910 return reg_val & RIO_EXT_FTR_PTR_MASK;
911 } else {
912 if (local)
913 rio_local_read_config_32(port, from, &reg_val);
914 else
915 rio_mport_read_config_32(port, destid, hopcount,
916 from, &reg_val);
917 return RIO_GET_BLOCK_ID(reg_val);
918 }
919}
920
921/**
Matt Porter394b7012005-11-07 01:00:15 -0800922 * rio_mport_get_feature - query for devices' extended features
923 * @port: Master port to issue transaction
924 * @local: Indicate a local master port or remote device access
925 * @destid: Destination ID of the device
926 * @hopcount: Number of switch hops to the device
927 * @ftr: Extended feature code
928 *
929 * Tell if a device supports a given RapidIO capability.
930 * Returns the offset of the requested extended feature
931 * block within the device's RIO configuration space or
932 * 0 in case the device does not support it. Possible
933 * values for @ftr:
934 *
935 * %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices
936 *
937 * %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices
938 *
939 * %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices
940 *
941 * %RIO_EFB_SER_EP_ID LP/Serial EP Devices
942 *
943 * %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices
944 *
945 * %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices
946 */
947u32
948rio_mport_get_feature(struct rio_mport * port, int local, u16 destid,
949 u8 hopcount, int ftr)
950{
951 u32 asm_info, ext_ftr_ptr, ftr_header;
952
953 if (local)
954 rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info);
955 else
956 rio_mport_read_config_32(port, destid, hopcount,
957 RIO_ASM_INFO_CAR, &asm_info);
958
959 ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK;
960
961 while (ext_ftr_ptr) {
962 if (local)
963 rio_local_read_config_32(port, ext_ftr_ptr,
964 &ftr_header);
965 else
966 rio_mport_read_config_32(port, destid, hopcount,
967 ext_ftr_ptr, &ftr_header);
968 if (RIO_GET_BLOCK_ID(ftr_header) == ftr)
969 return ext_ftr_ptr;
970 if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header)))
971 break;
972 }
973
974 return 0;
975}
976
977/**
978 * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did
979 * @vid: RIO vid to match or %RIO_ANY_ID to match all vids
980 * @did: RIO did to match or %RIO_ANY_ID to match all dids
981 * @asm_vid: RIO asm_vid to match or %RIO_ANY_ID to match all asm_vids
982 * @asm_did: RIO asm_did to match or %RIO_ANY_ID to match all asm_dids
983 * @from: Previous RIO device found in search, or %NULL for new search
984 *
985 * Iterates through the list of known RIO devices. If a RIO device is
986 * found with a matching @vid, @did, @asm_vid, @asm_did, the reference
987 * count to the device is incrememted and a pointer to its device
988 * structure is returned. Otherwise, %NULL is returned. A new search
989 * is initiated by passing %NULL to the @from argument. Otherwise, if
990 * @from is not %NULL, searches continue from next device on the global
991 * list. The reference count for @from is always decremented if it is
992 * not %NULL.
993 */
994struct rio_dev *rio_get_asm(u16 vid, u16 did,
995 u16 asm_vid, u16 asm_did, struct rio_dev *from)
996{
997 struct list_head *n;
998 struct rio_dev *rdev;
999
1000 WARN_ON(in_interrupt());
1001 spin_lock(&rio_global_list_lock);
1002 n = from ? from->global_list.next : rio_devices.next;
1003
1004 while (n && (n != &rio_devices)) {
1005 rdev = rio_dev_g(n);
1006 if ((vid == RIO_ANY_ID || rdev->vid == vid) &&
1007 (did == RIO_ANY_ID || rdev->did == did) &&
1008 (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) &&
1009 (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did))
1010 goto exit;
1011 n = n->next;
1012 }
1013 rdev = NULL;
1014 exit:
1015 rio_dev_put(from);
1016 rdev = rio_dev_get(rdev);
1017 spin_unlock(&rio_global_list_lock);
1018 return rdev;
1019}
1020
1021/**
1022 * rio_get_device - Begin or continue searching for a RIO device by vid/did
1023 * @vid: RIO vid to match or %RIO_ANY_ID to match all vids
1024 * @did: RIO did to match or %RIO_ANY_ID to match all dids
1025 * @from: Previous RIO device found in search, or %NULL for new search
1026 *
1027 * Iterates through the list of known RIO devices. If a RIO device is
1028 * found with a matching @vid and @did, the reference count to the
1029 * device is incrememted and a pointer to its device structure is returned.
1030 * Otherwise, %NULL is returned. A new search is initiated by passing %NULL
1031 * to the @from argument. Otherwise, if @from is not %NULL, searches
1032 * continue from next device on the global list. The reference count for
1033 * @from is always decremented if it is not %NULL.
1034 */
1035struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from)
1036{
1037 return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from);
1038}
1039
Alexandre Bounine07590ff2010-05-26 14:43:57 -07001040/**
1041 * rio_std_route_add_entry - Add switch route table entry using standard
1042 * registers defined in RIO specification rev.1.3
1043 * @mport: Master port to issue transaction
1044 * @destid: Destination ID of the device
1045 * @hopcount: Number of switch hops to the device
1046 * @table: routing table ID (global or port-specific)
1047 * @route_destid: destID entry in the RT
1048 * @route_port: destination port for specified destID
1049 */
1050int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
1051 u16 table, u16 route_destid, u8 route_port)
1052{
1053 if (table == RIO_GLOBAL_TABLE) {
1054 rio_mport_write_config_32(mport, destid, hopcount,
1055 RIO_STD_RTE_CONF_DESTID_SEL_CSR,
1056 (u32)route_destid);
1057 rio_mport_write_config_32(mport, destid, hopcount,
1058 RIO_STD_RTE_CONF_PORT_SEL_CSR,
1059 (u32)route_port);
1060 }
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -07001061
Alexandre Bounine07590ff2010-05-26 14:43:57 -07001062 udelay(10);
1063 return 0;
1064}
1065
1066/**
1067 * rio_std_route_get_entry - Read switch route table entry (port number)
Uwe Kleine-König638c5942010-06-11 12:16:58 +02001068 * associated with specified destID using standard registers defined in RIO
Alexandre Bounine07590ff2010-05-26 14:43:57 -07001069 * specification rev.1.3
1070 * @mport: Master port to issue transaction
1071 * @destid: Destination ID of the device
1072 * @hopcount: Number of switch hops to the device
1073 * @table: routing table ID (global or port-specific)
1074 * @route_destid: destID entry in the RT
1075 * @route_port: returned destination port for specified destID
1076 */
1077int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
1078 u16 table, u16 route_destid, u8 *route_port)
1079{
1080 u32 result;
1081
1082 if (table == RIO_GLOBAL_TABLE) {
1083 rio_mport_write_config_32(mport, destid, hopcount,
1084 RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
1085 rio_mport_read_config_32(mport, destid, hopcount,
1086 RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
1087
1088 *route_port = (u8)result;
1089 }
1090
1091 return 0;
1092}
1093
1094/**
1095 * rio_std_route_clr_table - Clear swotch route table using standard registers
1096 * defined in RIO specification rev.1.3.
1097 * @mport: Master port to issue transaction
Alexandre Bounine07590ff2010-05-26 14:43:57 -07001098 * @destid: Destination ID of the device
1099 * @hopcount: Number of switch hops to the device
1100 * @table: routing table ID (global or port-specific)
1101 */
1102int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
1103 u16 table)
1104{
1105 u32 max_destid = 0xff;
1106 u32 i, pef, id_inc = 1, ext_cfg = 0;
1107 u32 port_sel = RIO_INVALID_ROUTE;
1108
1109 if (table == RIO_GLOBAL_TABLE) {
1110 rio_mport_read_config_32(mport, destid, hopcount,
1111 RIO_PEF_CAR, &pef);
1112
1113 if (mport->sys_size) {
1114 rio_mport_read_config_32(mport, destid, hopcount,
1115 RIO_SWITCH_RT_LIMIT,
1116 &max_destid);
1117 max_destid &= RIO_RT_MAX_DESTID;
1118 }
1119
1120 if (pef & RIO_PEF_EXT_RT) {
1121 ext_cfg = 0x80000000;
1122 id_inc = 4;
1123 port_sel = (RIO_INVALID_ROUTE << 24) |
1124 (RIO_INVALID_ROUTE << 16) |
1125 (RIO_INVALID_ROUTE << 8) |
1126 RIO_INVALID_ROUTE;
1127 }
1128
1129 for (i = 0; i <= max_destid;) {
1130 rio_mport_write_config_32(mport, destid, hopcount,
1131 RIO_STD_RTE_CONF_DESTID_SEL_CSR,
1132 ext_cfg | i);
1133 rio_mport_write_config_32(mport, destid, hopcount,
1134 RIO_STD_RTE_CONF_PORT_SEL_CSR,
1135 port_sel);
1136 i += id_inc;
1137 }
1138 }
1139
1140 udelay(10);
1141 return 0;
1142}
1143
Matt Porter394b7012005-11-07 01:00:15 -08001144static void rio_fixup_device(struct rio_dev *dev)
1145{
1146}
1147
1148static int __devinit rio_init(void)
1149{
1150 struct rio_dev *dev = NULL;
1151
1152 while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) {
1153 rio_fixup_device(dev);
1154 }
1155 return 0;
1156}
1157
1158device_initcall(rio_init);
1159
Al Viro37d33d12008-11-22 17:36:24 +00001160int __devinit rio_init_mports(void)
Matt Porter394b7012005-11-07 01:00:15 -08001161{
1162 int rc = 0;
1163 struct rio_mport *port;
1164
1165 list_for_each_entry(port, &rio_mports, node) {
1166 if (!request_mem_region(port->iores.start,
1167 port->iores.end - port->iores.start,
1168 port->name)) {
1169 printk(KERN_ERR
Kumar Gala5febf1c2008-01-23 05:53:47 -06001170 "RIO: Error requesting master port region 0x%016llx-0x%016llx\n",
1171 (u64)port->iores.start, (u64)port->iores.end - 1);
Matt Porter394b7012005-11-07 01:00:15 -08001172 rc = -ENOMEM;
1173 goto out;
1174 }
1175
1176 if (port->host_deviceid >= 0)
1177 rio_enum_mport(port);
1178 else
1179 rio_disc_mport(port);
1180 }
1181
1182 out:
1183 return rc;
1184}
1185
1186void rio_register_mport(struct rio_mport *port)
1187{
1188 list_add_tail(&port->node, &rio_mports);
1189}
1190
1191EXPORT_SYMBOL_GPL(rio_local_get_device_id);
1192EXPORT_SYMBOL_GPL(rio_get_device);
1193EXPORT_SYMBOL_GPL(rio_get_asm);
1194EXPORT_SYMBOL_GPL(rio_request_inb_dbell);
1195EXPORT_SYMBOL_GPL(rio_release_inb_dbell);
1196EXPORT_SYMBOL_GPL(rio_request_outb_dbell);
1197EXPORT_SYMBOL_GPL(rio_release_outb_dbell);
1198EXPORT_SYMBOL_GPL(rio_request_inb_mbox);
1199EXPORT_SYMBOL_GPL(rio_release_inb_mbox);
1200EXPORT_SYMBOL_GPL(rio_request_outb_mbox);
1201EXPORT_SYMBOL_GPL(rio_release_outb_mbox);