1/* $NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $ */
2/*-
3 * Copyright (c) 2003 Hidetoshi Shimokawa
4 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the acknowledgement as bellow:
17 *
18 * This product includes software developed by K. Kobayashi and H. Shimokawa
19 *
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
26 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
27 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
32 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 *
35 * $FreeBSD: src/sys/dev/firewire/firewire.c,v 1.110 2009/04/07 02:33:46 sbruno Exp $
36 *
37 */
38
39#include <sys/cdefs.h>
40__KERNEL_RCSID(0, "$NetBSD: firewire.c,v 1.47 2016/11/20 22:47:39 riastradh Exp $");
41
42#include <sys/param.h>
43#include <sys/bus.h>
44#include <sys/callout.h>
45#include <sys/condvar.h>
46#include <sys/conf.h>
47#include <sys/device.h>
48#include <sys/errno.h>
49#include <sys/kernel.h>
50#include <sys/kthread.h>
51#include <sys/malloc.h>
52#include <sys/queue.h>
53#include <sys/sysctl.h>
54#include <sys/systm.h>
55
56#include <dev/ieee1394/firewire.h>
57#include <dev/ieee1394/firewirereg.h>
58#include <dev/ieee1394/fwmem.h>
59#include <dev/ieee1394/iec13213.h>
60#include <dev/ieee1394/iec68113.h>
61
62#include "locators.h"
63
64struct crom_src_buf {
65 struct crom_src src;
66 struct crom_chunk root;
67 struct crom_chunk vendor;
68 struct crom_chunk hw;
69};
70
71int firewire_debug = 0, try_bmr = 1, hold_count = 0;
72/*
73 * Setup sysctl(3) MIB, hw.ieee1394if.*
74 *
75 * TBD condition CTLFLAG_PERMANENT on being a module or not
76 */
77SYSCTL_SETUP(sysctl_ieee1394if, "sysctl ieee1394if(4) subtree setup")
78{
79 int rc, ieee1394if_node_num;
80 const struct sysctlnode *node;
81
82 if ((rc = sysctl_createv(clog, 0, NULL, &node,
83 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ieee1394if",
84 SYSCTL_DESCR("ieee1394if controls"),
85 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) {
86 goto err;
87 }
88 ieee1394if_node_num = node->sysctl_num;
89
90 /* ieee1394if try bus manager flag */
91 if ((rc = sysctl_createv(clog, 0, NULL, &node,
92 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
93 "try_bmr", SYSCTL_DESCR("Try to be a bus manager"),
94 NULL, 0, &try_bmr,
95 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) {
96 goto err;
97 }
98
99 /* ieee1394if hold count */
100 if ((rc = sysctl_createv(clog, 0, NULL, &node,
101 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
102 "hold_count", SYSCTL_DESCR("Number of count of "
103 "bus resets for removing lost device information"),
104 NULL, 0, &hold_count,
105 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) {
106 goto err;
107 }
108
109 /* ieee1394if driver debug flag */
110 if ((rc = sysctl_createv(clog, 0, NULL, &node,
111 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT,
112 "ieee1394_debug", SYSCTL_DESCR("ieee1394if driver debug flag"),
113 NULL, 0, &firewire_debug,
114 0, CTL_HW, ieee1394if_node_num, CTL_CREATE, CTL_EOL)) != 0) {
115 goto err;
116 }
117
118 return;
119
120err:
121 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc);
122}
123
124MALLOC_DEFINE(M_FW, "ieee1394", "IEEE1394");
125
126#define FW_MAXASYRTY 4
127
128#define FW_GENERATION_CHANGEABLE 2
129
130static int firewirematch (device_t, cfdata_t, void *);
131static void firewireattach (device_t, device_t, void *);
132static int firewiredetach (device_t, int);
133static int firewire_print (void *, const char *);
134
135int firewire_resume (struct firewire_comm *);
136
137static void fw_asystart(struct fw_xfer *);
138static void firewire_xfer_timeout(struct firewire_comm *);
139static void firewire_watchdog(void *);
140static void fw_xferq_drain(struct fw_xferq *);
141static void fw_reset_csr(struct firewire_comm *);
142static void fw_init_crom(struct firewire_comm *);
143static void fw_reset_crom(struct firewire_comm *);
144static void fw_dump_hdr(struct fw_pkt *, const char *);
145static void fw_tl_free(struct firewire_comm *, struct fw_xfer *);
146static struct fw_xfer *fw_tl2xfer(struct firewire_comm *, int, int, int);
147static void fw_phy_config(struct firewire_comm *, int, int);
148static void fw_print_sid(uint32_t);
149static void fw_bus_probe(struct firewire_comm *);
150static int fw_explore_read_quads(struct fw_device *, int, uint32_t *, int);
151static int fw_explore_csrblock(struct fw_device *, int, int);
152static int fw_explore_node(struct fw_device *);
153static union fw_self_id *fw_find_self_id(struct firewire_comm *, int);
154static void fw_explore(struct firewire_comm *);
155static void fw_bus_probe_thread(void *);
156static void fw_attach_dev(struct firewire_comm *);
157static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *);
158static void fw_rcv_copy(struct fw_rcv_buf *);
159static void fw_try_bmr_callback(struct fw_xfer *);
160static void fw_try_bmr(void *);
161static int fw_bmr(struct firewire_comm *);
162
163
164CFATTACH_DECL_NEW(ieee1394if, sizeof(struct firewire_softc),
165 firewirematch, firewireattach, firewiredetach, NULL);
166
167
168const char *fw_linkspeed[] = {
169 "S100", "S200", "S400", "S800",
170 "S1600", "S3200", "undef", "undef"
171};
172
173static const char *tcode_str[] = {
174 "WREQQ", "WREQB", "WRES", "undef",
175 "RREQQ", "RREQB", "RRESQ", "RRESB",
176 "CYCS", "LREQ", "STREAM", "LRES",
177 "undef", "undef", "PHY", "undef"
178};
179
180/* IEEE-1394a Table C-2 Gap count as a function of hops*/
181#define MAX_GAPHOP 15
182u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18,
183 21, 24, 26, 29, 32, 35, 37, 40};
184
185
186static int
187firewirematch(device_t parent, cfdata_t cf, void *aux)
188{
189
190 return 1; /* always match */
191}
192
193static void
194firewireattach(device_t parent, device_t self, void *aux)
195{
196 struct firewire_softc *sc = device_private(self);
197 struct firewire_comm *fc = device_private(parent);
198 struct fw_attach_args faa;
199 struct firewire_dev_list *devlist;
200
201 aprint_naive("\n");
202 aprint_normal(": IEEE1394 bus\n");
203
204 fc->bdev = sc->dev = self;
205 sc->fc = fc;
206 SLIST_INIT(&sc->devlist);
207
208 fc->status = FWBUSNOTREADY;
209
210 if (fc->nisodma > FWMAXNDMA)
211 fc->nisodma = FWMAXNDMA;
212
213 fc->crom_src_buf =
214 (struct crom_src_buf *)malloc(sizeof(struct crom_src_buf),
215 M_FW, M_NOWAIT | M_ZERO);
216 if (fc->crom_src_buf == NULL) {
217 aprint_error_dev(fc->bdev, "Malloc Failure crom src buff\n");
218 return;
219 }
220 fc->topology_map =
221 (struct fw_topology_map *)malloc(sizeof(struct fw_topology_map),
222 M_FW, M_NOWAIT | M_ZERO);
223 if (fc->topology_map == NULL) {
224 aprint_error_dev(fc->dev, "Malloc Failure topology map\n");
225 free(fc->crom_src_buf, M_FW);
226 return;
227 }
228 fc->speed_map =
229 (struct fw_speed_map *)malloc(sizeof(struct fw_speed_map),
230 M_FW, M_NOWAIT | M_ZERO);
231 if (fc->speed_map == NULL) {
232 aprint_error_dev(fc->dev, "Malloc Failure speed map\n");
233 free(fc->crom_src_buf, M_FW);
234 free(fc->topology_map, M_FW);
235 return;
236 }
237
238 mutex_init(&fc->tlabel_lock, MUTEX_DEFAULT, IPL_VM);
239 mutex_init(&fc->fc_mtx, MUTEX_DEFAULT, IPL_VM);
240 mutex_init(&fc->wait_lock, MUTEX_DEFAULT, IPL_VM);
241 cv_init(&fc->fc_cv, "ieee1394");
242
243 callout_init(&fc->timeout_callout, CALLOUT_MPSAFE);
244 callout_setfunc(&fc->timeout_callout, firewire_watchdog, fc);
245 callout_init(&fc->bmr_callout, CALLOUT_MPSAFE);
246 callout_setfunc(&fc->bmr_callout, fw_try_bmr, fc);
247 callout_init(&fc->busprobe_callout, CALLOUT_MPSAFE);
248 callout_setfunc(&fc->busprobe_callout, (void *)fw_bus_probe, fc);
249
250 callout_schedule(&fc->timeout_callout, hz);
251
252 /* Tell config we will have started a thread to scan the bus. */
253 config_pending_incr(self);
254
255 /* create thread */
256 if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, fw_bus_probe_thread,
257 fc, &fc->probe_thread, "fw%dprobe", device_unit(fc->bdev))) {
258 aprint_error_dev(self, "kthread_create failed\n");
259 config_pending_decr(self);
260 }
261
262 devlist = malloc(sizeof(struct firewire_dev_list), M_DEVBUF, M_NOWAIT);
263 if (devlist == NULL) {
264 aprint_error_dev(self, "device list allocation failed\n");
265 return;
266 }
267
268 faa.name = "fwip";
269 faa.fc = fc;
270 faa.fwdev = NULL;
271 devlist->dev = config_found(sc->dev, &faa, firewire_print);
272 if (devlist->dev == NULL)
273 free(devlist, M_DEVBUF);
274 else
275 SLIST_INSERT_HEAD(&sc->devlist, devlist, link);
276
277 /* bus_reset */
278 fw_busreset(fc, FWBUSNOTREADY);
279 fc->ibr(fc);
280
281 if (!pmf_device_register(self, NULL, NULL))
282 aprint_error_dev(self, "couldn't establish power handler\n");
283
284 return;
285}
286
287static int
288firewiredetach(device_t self, int flags)
289{
290 struct firewire_softc *sc = device_private(self);
291 struct firewire_comm *fc;
292 struct fw_device *fwdev, *fwdev_next;
293 struct firewire_dev_list *devlist;
294 int err;
295
296 fc = sc->fc;
297 mutex_enter(&fc->wait_lock);
298 fc->status = FWBUSDETACH;
299 cv_signal(&fc->fc_cv);
300 while (fc->status != FWBUSDETACHOK) {
301 err = cv_timedwait_sig(&fc->fc_cv, &fc->wait_lock, hz * 60);
302 if (err == EWOULDBLOCK) {
303 aprint_error_dev(self,
304 "firewire probe thread didn't die\n");
305 break;
306 }
307 }
308 mutex_exit(&fc->wait_lock);
309
310
311 while ((devlist = SLIST_FIRST(&sc->devlist)) != NULL) {
312 if ((err = config_detach(devlist->dev, flags)) != 0)
313 return err;
314 SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list, link);
315 free(devlist, M_DEVBUF);
316 }
317
318 callout_stop(&fc->timeout_callout);
319 callout_stop(&fc->bmr_callout);
320 callout_stop(&fc->busprobe_callout);
321
322 /* XXX xfer_free and untimeout on all xfers */
323 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
324 fwdev = fwdev_next) {
325 fwdev_next = STAILQ_NEXT(fwdev, link);
326 free(fwdev, M_FW);
327 }
328 free(fc->topology_map, M_FW);
329 free(fc->speed_map, M_FW);
330 free(fc->crom_src_buf, M_FW);
331
332 cv_destroy(&fc->fc_cv);
333 mutex_destroy(&fc->wait_lock);
334 mutex_destroy(&fc->fc_mtx);
335 mutex_destroy(&fc->tlabel_lock);
336 return 0;
337}
338
339static int
340firewire_print(void *aux, const char *pnp)
341{
342 struct fw_attach_args *fwa = (struct fw_attach_args *)aux;
343
344 if (pnp)
345 aprint_normal("%s at %s", fwa->name, pnp);
346
347 return UNCONF;
348}
349
350int
351firewire_resume(struct firewire_comm *fc)
352{
353
354 fc->status = FWBUSNOTREADY;
355 return 0;
356}
357
358
359/*
360 * Lookup fwdev by node id.
361 */
362struct fw_device *
363fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
364{
365 struct fw_device *fwdev;
366
367 mutex_enter(&fc->fc_mtx);
368 STAILQ_FOREACH(fwdev, &fc->devices, link)
369 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
370 break;
371 mutex_exit(&fc->fc_mtx);
372
373 return fwdev;
374}
375
376/*
377 * Lookup fwdev by EUI64.
378 */
379struct fw_device *
380fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
381{
382 struct fw_device *fwdev;
383
384 mutex_enter(&fc->fc_mtx);
385 STAILQ_FOREACH(fwdev, &fc->devices, link)
386 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
387 break;
388 mutex_exit(&fc->fc_mtx);
389
390 if (fwdev == NULL)
391 return NULL;
392 if (fwdev->status == FWDEVINVAL)
393 return NULL;
394 return fwdev;
395}
396
397/*
398 * Async. request procedure for userland application.
399 */
400int
401fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
402{
403 struct fw_xferq *xferq;
404 int len;
405 struct fw_pkt *fp;
406 int tcode;
407 const struct tcode_info *info;
408
409 if (xfer == NULL)
410 return EINVAL;
411 if (xfer->hand == NULL) {
412 aprint_error_dev(fc->bdev, "hand == NULL\n");
413 return EINVAL;
414 }
415 fp = &xfer->send.hdr;
416
417 tcode = fp->mode.common.tcode & 0xf;
418 info = &fc->tcode[tcode];
419 if (info->flag == 0) {
420 aprint_error_dev(fc->bdev, "invalid tcode=%x\n", tcode);
421 return EINVAL;
422 }
423
424 /* XXX allow bus explore packets only after bus rest */
425 if ((fc->status < FWBUSEXPLORE) &&
426 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
427 (fp->mode.rreqq.dest_lo < 0xf0000000) ||
428 (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
429 xfer->resp = EAGAIN;
430 xfer->flag = FWXF_BUSY;
431 return EAGAIN;
432 }
433
434 if (info->flag & FWTI_REQ)
435 xferq = fc->atq;
436 else
437 xferq = fc->ats;
438 len = info->hdr_len;
439 if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
440 aprint_error_dev(fc->bdev, "send.pay_len > maxrec\n");
441 return EINVAL;
442 }
443 if (info->flag & FWTI_BLOCK_STR)
444 len = fp->mode.stream.len;
445 else if (info->flag & FWTI_BLOCK_ASY)
446 len = fp->mode.rresb.len;
447 else
448 len = 0;
449 if (len != xfer->send.pay_len) {
450 aprint_error_dev(fc->bdev,
451 "len(%d) != send.pay_len(%d) %s(%x)\n",
452 len, xfer->send.pay_len, tcode_str[tcode], tcode);
453 return EINVAL;
454 }
455
456 if (xferq->start == NULL) {
457 aprint_error_dev(fc->bdev, "xferq->start == NULL\n");
458 return EINVAL;
459 }
460 if (!(xferq->queued < xferq->maxq)) {
461 aprint_error_dev(fc->bdev, "Discard a packet (queued=%d)\n",
462 xferq->queued);
463 return EAGAIN;
464 }
465
466 xfer->tl = -1;
467 if (info->flag & FWTI_TLABEL)
468 if (fw_get_tlabel(fc, xfer) < 0)
469 return EAGAIN;
470
471 xfer->resp = 0;
472 xfer->fc = fc;
473 xfer->q = xferq;
474
475 fw_asystart(xfer);
476 return 0;
477}
478
479/*
480 * Wakeup blocked process.
481 */
482void
483fw_xferwake(struct fw_xfer *xfer)
484{
485
486 mutex_enter(&xfer->fc->wait_lock);
487 xfer->flag |= FWXF_WAKE;
488 cv_signal(&xfer->cv);
489 mutex_exit(&xfer->fc->wait_lock);
490
491 return;
492}
493
494int
495fw_xferwait(struct fw_xfer *xfer)
496{
497 struct firewire_comm *fc = xfer->fc;
498 int err = 0;
499
500 mutex_enter(&fc->wait_lock);
501 while (!(xfer->flag & FWXF_WAKE))
502 err = cv_wait_sig(&xfer->cv, &fc->wait_lock);
503 mutex_exit(&fc->wait_lock);
504
505 return err;
506}
507
508void
509fw_drain_txq(struct firewire_comm *fc)
510{
511 struct fw_xfer *xfer;
512 STAILQ_HEAD(, fw_xfer) xfer_drain;
513 int i;
514
515 STAILQ_INIT(&xfer_drain);
516
517 mutex_enter(&fc->atq->q_mtx);
518 fw_xferq_drain(fc->atq);
519 mutex_exit(&fc->atq->q_mtx);
520 mutex_enter(&fc->ats->q_mtx);
521 fw_xferq_drain(fc->ats);
522 mutex_exit(&fc->ats->q_mtx);
523 for (i = 0; i < fc->nisodma; i++)
524 fw_xferq_drain(fc->it[i]);
525
526 mutex_enter(&fc->tlabel_lock);
527 for (i = 0; i < 0x40; i++)
528 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
529 if (firewire_debug)
530 printf("tl=%d flag=%d\n", i, xfer->flag);
531 xfer->resp = EAGAIN;
532 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
533 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
534 }
535 mutex_exit(&fc->tlabel_lock);
536
537 STAILQ_FOREACH(xfer, &xfer_drain, tlabel)
538 xfer->hand(xfer);
539}
540
541/*
542 * Called after bus reset.
543 */
544void
545fw_busreset(struct firewire_comm *fc, uint32_t new_status)
546{
547 struct firewire_softc *sc = device_private(fc->bdev);
548 struct firewire_dev_list *devlist;
549 struct firewire_dev_comm *fdc;
550 struct crom_src *src;
551 uint32_t *newrom;
552
553 if (fc->status == FWBUSMGRELECT)
554 callout_stop(&fc->bmr_callout);
555
556 fc->status = new_status;
557 fw_reset_csr(fc);
558
559 if (fc->status == FWBUSNOTREADY)
560 fw_init_crom(fc);
561
562 fw_reset_crom(fc);
563
564 /* How many safe this access? */
565 SLIST_FOREACH(devlist, &sc->devlist, link) {
566 fdc = device_private(devlist->dev);
567 if (fdc->post_busreset != NULL)
568 fdc->post_busreset(fdc);
569 }
570
571 /*
572 * If the old config rom needs to be overwritten,
573 * bump the businfo.generation indicator to
574 * indicate that we need to be reprobed
575 * See 1394a-2000 8.3.2.5.4 for more details.
576 * generation starts at 2 and rolls over at 0xF
577 * back to 2.
578 *
579 * A generation of 0 indicates a device
580 * that is not 1394a-2000 compliant.
581 * A generation of 1 indicates a device that
582 * does not change its Bus Info Block or
583 * Configuration ROM.
584 */
585#define FW_MAX_GENERATION 0xF
586 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
587 src = &fc->crom_src_buf->src;
588 crom_load(src, newrom, CROMSIZE);
589 if (memcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
590 if (src->businfo.generation++ > FW_MAX_GENERATION)
591 src->businfo.generation = FW_GENERATION_CHANGEABLE;
592 memcpy((void *)fc->config_rom, newrom, CROMSIZE);
593 }
594 free(newrom, M_FW);
595}
596
597/* Call once after reboot */
598void
599fw_init(struct firewire_comm *fc)
600{
601 int i;
602
603 fc->arq->queued = 0;
604 fc->ars->queued = 0;
605 fc->atq->queued = 0;
606 fc->ats->queued = 0;
607
608 fc->arq->buf = NULL;
609 fc->ars->buf = NULL;
610 fc->atq->buf = NULL;
611 fc->ats->buf = NULL;
612
613 fc->arq->flag = 0;
614 fc->ars->flag = 0;
615 fc->atq->flag = 0;
616 fc->ats->flag = 0;
617
618 STAILQ_INIT(&fc->atq->q);
619 STAILQ_INIT(&fc->ats->q);
620 mutex_init(&fc->arq->q_mtx, MUTEX_DEFAULT, IPL_VM);
621 mutex_init(&fc->ars->q_mtx, MUTEX_DEFAULT, IPL_VM);
622 mutex_init(&fc->atq->q_mtx, MUTEX_DEFAULT, IPL_VM);
623 mutex_init(&fc->ats->q_mtx, MUTEX_DEFAULT, IPL_VM);
624
625 fc->arq->maxq = FWMAXQUEUE;
626 fc->ars->maxq = FWMAXQUEUE;
627 fc->atq->maxq = FWMAXQUEUE;
628 fc->ats->maxq = FWMAXQUEUE;
629
630 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
631 CSRARC(fc, TOPO_MAP + 4) = 1;
632 CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
633 CSRARC(fc, SPED_MAP + 4) = 1;
634
635 STAILQ_INIT(&fc->devices);
636
637/* Initialize Async handlers */
638 STAILQ_INIT(&fc->binds);
639 for (i = 0; i < 0x40; i++)
640 STAILQ_INIT(&fc->tlabels[i]);
641
642/* DV depend CSRs see blue book */
643#if 0
644 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
645 CSRARC(fc, oPCR) = 0x8000007a;
646 for (i = 4; i < 0x7c/4; i+=4)
647 CSRARC(fc, i + oPCR) = 0x8000007a;
648
649 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
650 CSRARC(fc, iPCR) = 0x803f0000;
651 for (i = 4; i < 0x7c/4; i+=4)
652 CSRARC(fc, i + iPCR) = 0x0;
653#endif
654
655 fc->crom_src_buf = NULL;
656}
657
658/*
659 * Called by HCI driver when it has determined the number of
660 * isochronous DMA channels.
661 */
662void
663fw_init_isodma(struct firewire_comm *fc)
664{
665 unsigned i;
666
667 for (i = 0; i < fc->nisodma; i++) {
668 fc->it[i]->queued = 0;
669 fc->ir[i]->queued = 0;
670
671 fc->it[i]->start = NULL;
672 fc->ir[i]->start = NULL;
673
674 fc->it[i]->buf = NULL;
675 fc->ir[i]->buf = NULL;
676
677 fc->it[i]->flag = FWXFERQ_STREAM;
678 fc->ir[i]->flag = FWXFERQ_STREAM;
679
680 STAILQ_INIT(&fc->it[i]->q);
681 STAILQ_INIT(&fc->ir[i]->q);
682
683 fc->ir[i]->maxq = FWMAXQUEUE;
684 fc->it[i]->maxq = FWMAXQUEUE;
685
686 cv_init(&fc->ir[i]->cv, "fw_read");
687 cv_init(&fc->it[i]->cv, "fw_write");
688 }
689}
690
691void
692fw_destroy_isodma(struct firewire_comm *fc)
693{
694 unsigned i;
695
696 for (i = 0; i < fc->nisodma; i++) {
697 cv_destroy(&fc->ir[i]->cv);
698 cv_destroy(&fc->it[i]->cv);
699 }
700}
701
702void
703fw_destroy(struct firewire_comm *fc)
704{
705 mutex_destroy(&fc->arq->q_mtx);
706 mutex_destroy(&fc->ars->q_mtx);
707 mutex_destroy(&fc->atq->q_mtx);
708 mutex_destroy(&fc->ats->q_mtx);
709}
710
711#define BIND_CMP(addr, fwb) \
712 (((addr) < (fwb)->start) ? -1 : ((fwb)->end < (addr)) ? 1 : 0)
713
714/*
715 * To lookup bound process from IEEE1394 address.
716 */
717struct fw_bind *
718fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
719{
720 u_int64_t addr;
721 struct fw_bind *tfw, *r = NULL;
722
723 addr = ((u_int64_t)dest_hi << 32) | dest_lo;
724 mutex_enter(&fc->fc_mtx);
725 STAILQ_FOREACH(tfw, &fc->binds, fclist)
726 if (BIND_CMP(addr, tfw) == 0) {
727 r = tfw;
728 break;
729 }
730 mutex_exit(&fc->fc_mtx);
731 return r;
732}
733
734/*
735 * To bind IEEE1394 address block to process.
736 */
737int
738fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
739{
740 struct fw_bind *tfw, *prev = NULL;
741 int r = 0;
742
743 if (fwb->start > fwb->end) {
744 aprint_error_dev(fc->bdev, "invalid range\n");
745 return EINVAL;
746 }
747
748 mutex_enter(&fc->fc_mtx);
749 STAILQ_FOREACH(tfw, &fc->binds, fclist) {
750 if (fwb->end < tfw->start)
751 break;
752 prev = tfw;
753 }
754 if (prev == NULL)
755 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
756 else if (prev->end < fwb->start)
757 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
758 else {
759 aprint_error_dev(fc->bdev, "bind failed\n");
760 r = EBUSY;
761 }
762 mutex_exit(&fc->fc_mtx);
763 return r;
764}
765
766/*
767 * To free IEEE1394 address block.
768 */
769int
770fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
771{
772#if 0
773 struct fw_xfer *xfer, *next;
774#endif
775 struct fw_bind *tfw;
776
777 mutex_enter(&fc->fc_mtx);
778 STAILQ_FOREACH(tfw, &fc->binds, fclist)
779 if (tfw == fwb) {
780 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
781 mutex_exit(&fc->fc_mtx);
782 goto found;
783 }
784
785 mutex_exit(&fc->fc_mtx);
786 aprint_error_dev(fc->bdev, "no such binding\n");
787 return 1;
788found:
789#if 0
790 /* shall we do this? */
791 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
792 next = STAILQ_NEXT(xfer, link);
793 fw_xfer_free(xfer);
794 }
795 STAILQ_INIT(&fwb->xferlist);
796#endif
797
798 return 0;
799}
800
801int
802fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type, int slen,
803 int rlen, int n, struct firewire_comm *fc, void *sc,
804 void (*hand)(struct fw_xfer *))
805{
806 struct fw_xfer *xfer;
807 int i;
808
809 for (i = 0; i < n; i++) {
810 xfer = fw_xfer_alloc_buf(type, slen, rlen);
811 if (xfer == NULL)
812 return n;
813 xfer->fc = fc;
814 xfer->sc = sc;
815 xfer->hand = hand;
816 STAILQ_INSERT_TAIL(q, xfer, link);
817 }
818 return n;
819}
820
821void
822fw_xferlist_remove(struct fw_xferlist *q)
823{
824 struct fw_xfer *xfer, *next;
825
826 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
827 next = STAILQ_NEXT(xfer, link);
828 fw_xfer_free_buf(xfer);
829 }
830 STAILQ_INIT(q);
831}
832
833/*
834 * To allocate IEEE1394 XFER structure.
835 */
836struct fw_xfer *
837fw_xfer_alloc(struct malloc_type *type)
838{
839 struct fw_xfer *xfer;
840
841 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
842 if (xfer == NULL)
843 return xfer;
844
845 xfer->malloc = type;
846 cv_init(&xfer->cv, "fwxfer");
847
848 return xfer;
849}
850
851struct fw_xfer *
852fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
853{
854 struct fw_xfer *xfer;
855
856 xfer = fw_xfer_alloc(type);
857 if (xfer == NULL)
858 return NULL;
859 xfer->send.pay_len = send_len;
860 xfer->recv.pay_len = recv_len;
861 if (send_len > 0) {
862 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
863 if (xfer->send.payload == NULL) {
864 fw_xfer_free(xfer);
865 return NULL;
866 }
867 }
868 if (recv_len > 0) {
869 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
870 if (xfer->recv.payload == NULL) {
871 if (xfer->send.payload != NULL)
872 free(xfer->send.payload, type);
873 fw_xfer_free(xfer);
874 return NULL;
875 }
876 }
877 return xfer;
878}
879
880/*
881 * IEEE1394 XFER post process.
882 */
883void
884fw_xfer_done(struct fw_xfer *xfer)
885{
886
887 if (xfer->hand == NULL) {
888 aprint_error_dev(xfer->fc->bdev, "hand == NULL\n");
889 return;
890 }
891
892 if (xfer->fc == NULL)
893 panic("fw_xfer_done: why xfer->fc is NULL?");
894
895 fw_tl_free(xfer->fc, xfer);
896 xfer->hand(xfer);
897}
898
899void
900fw_xfer_unload(struct fw_xfer* xfer)
901{
902
903 if (xfer == NULL)
904 return;
905 if (xfer->flag & FWXF_INQ) {
906 aprint_error_dev(xfer->fc->bdev, "fw_xfer_free FWXF_INQ\n");
907 mutex_enter(&xfer->q->q_mtx);
908 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
909#if 0
910 xfer->q->queued--;
911#endif
912 mutex_exit(&xfer->q->q_mtx);
913 }
914 if (xfer->fc != NULL) {
915#if 1
916 if (xfer->flag == FWXF_START)
917 /*
918 * This could happen if:
919 * 1. We call fwohci_arcv() before fwohci_txd().
920 * 2. firewire_watch() is called.
921 */
922 aprint_error_dev(xfer->fc->bdev,
923 "fw_xfer_free FWXF_START\n");
924#endif
925 }
926 xfer->flag = FWXF_INIT;
927 xfer->resp = 0;
928}
929
930/*
931 * To free IEEE1394 XFER structure.
932 */
933void
934fw_xfer_free(struct fw_xfer* xfer)
935{
936
937 if (xfer == NULL) {
938 aprint_error("fw_xfer_free: xfer == NULL\n");
939 return;
940 }
941 fw_xfer_unload(xfer);
942 cv_destroy(&xfer->cv);
943 free(xfer, xfer->malloc);
944}
945
946void
947fw_xfer_free_buf(struct fw_xfer* xfer)
948{
949
950 if (xfer == NULL) {
951 aprint_error("fw_xfer_free_buf: xfer == NULL\n");
952 return;
953 }
954 fw_xfer_unload(xfer);
955 if (xfer->send.payload != NULL) {
956 free(xfer->send.payload, xfer->malloc);
957 }
958 if (xfer->recv.payload != NULL) {
959 free(xfer->recv.payload, xfer->malloc);
960 }
961 cv_destroy(&xfer->cv);
962 free(xfer, xfer->malloc);
963}
964
965void
966fw_asy_callback_free(struct fw_xfer *xfer)
967{
968
969#if 0
970 printf("asyreq done flag=%d resp=%d\n", xfer->flag, xfer->resp);
971#endif
972 fw_xfer_free(xfer);
973}
974
975/*
976 * To receive self ID.
977 */
978void
979fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
980{
981 uint32_t *p;
982 union fw_self_id *self_id;
983 u_int i, j, node, c_port = 0, i_branch = 0;
984
985 fc->sid_cnt = len / (sizeof(uint32_t) * 2);
986 fc->max_node = fc->nodeid & 0x3f;
987 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
988 fc->status = FWBUSCYMELECT;
989 fc->topology_map->crc_len = 2;
990 fc->topology_map->generation++;
991 fc->topology_map->self_id_count = 0;
992 fc->topology_map->node_count = 0;
993 fc->speed_map->generation++;
994 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
995 self_id = fc->topology_map->self_id;
996 for (i = 0; i < fc->sid_cnt; i++) {
997 if (sid[1] != ~sid[0]) {
998 aprint_error_dev(fc->bdev,
999 "ERROR invalid self-id packet\n");
1000 sid += 2;
1001 continue;
1002 }
1003 *self_id = *((union fw_self_id *)sid);
1004 fc->topology_map->crc_len++;
1005 if (self_id->p0.sequel == 0) {
1006 fc->topology_map->node_count++;
1007 c_port = 0;
1008 if (firewire_debug)
1009 fw_print_sid(sid[0]);
1010 node = self_id->p0.phy_id;
1011 if (fc->max_node < node)
1012 fc->max_node = self_id->p0.phy_id;
1013 /* XXX I'm not sure this is the right speed_map */
1014 fc->speed_map->speed[node][node] =
1015 self_id->p0.phy_speed;
1016 for (j = 0; j < node; j++)
1017 fc->speed_map->speed[j][node] =
1018 fc->speed_map->speed[node][j] =
1019 min(fc->speed_map->speed[j][j],
1020 self_id->p0.phy_speed);
1021 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1022 (self_id->p0.link_active && self_id->p0.contender))
1023 fc->irm = self_id->p0.phy_id;
1024 if (self_id->p0.port0 >= 0x2)
1025 c_port++;
1026 if (self_id->p0.port1 >= 0x2)
1027 c_port++;
1028 if (self_id->p0.port2 >= 0x2)
1029 c_port++;
1030 }
1031 if (c_port > 2)
1032 i_branch += (c_port - 2);
1033 sid += 2;
1034 self_id++;
1035 fc->topology_map->self_id_count++;
1036 }
1037 /* CRC */
1038 fc->topology_map->crc =
1039 fw_crc16((uint32_t *)&fc->topology_map->generation,
1040 fc->topology_map->crc_len * 4);
1041 fc->speed_map->crc = fw_crc16((uint32_t *)&fc->speed_map->generation,
1042 fc->speed_map->crc_len * 4);
1043 /* byteswap and copy to CSR */
1044 p = (uint32_t *)fc->topology_map;
1045 for (i = 0; i <= fc->topology_map->crc_len; i++)
1046 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1047 p = (uint32_t *)fc->speed_map;
1048 CSRARC(fc, SPED_MAP) = htonl(*p++);
1049 CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1050 /* don't byte-swap uint8_t array */
1051 memcpy(&CSRARC(fc, SPED_MAP + 8), p, (fc->speed_map->crc_len - 1) * 4);
1052
1053 fc->max_hop = fc->max_node - i_branch;
1054 aprint_normal_dev(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d)%s\n",
1055 fc->max_node + 1, fc->max_hop,
1056 (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1057 fc->irm,
1058 (fc->irm == fc->nodeid) ? " (me)" : "");
1059
1060 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1061 if (fc->irm == fc->nodeid) {
1062 fc->status = FWBUSMGRDONE;
1063 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1064 fw_bmr(fc);
1065 } else {
1066 fc->status = FWBUSMGRELECT;
1067 callout_schedule(&fc->bmr_callout, hz/8);
1068 }
1069 } else
1070 fc->status = FWBUSMGRDONE;
1071
1072 callout_schedule(&fc->busprobe_callout, hz/4);
1073}
1074
1075/*
1076 * Generic packet receiving process.
1077 */
1078void
1079fw_rcv(struct fw_rcv_buf *rb)
1080{
1081 struct fw_pkt *fp, *resfp;
1082 struct fw_bind *bind;
1083 int tcode;
1084 int i, len, oldstate;
1085#if 0
1086 {
1087 uint32_t *qld;
1088 int i;
1089 qld = (uint32_t *)buf;
1090 printf("spd %d len:%d\n", spd, len);
1091 for (i = 0; i <= len && i < 32; i+= 4) {
1092 printf("0x%08x ", ntohl(qld[i/4]));
1093 if ((i % 16) == 15) printf("\n");
1094 }
1095 if ((i % 16) != 15) printf("\n");
1096 }
1097#endif
1098 fp = (struct fw_pkt *)rb->vec[0].iov_base;
1099 tcode = fp->mode.common.tcode;
1100 switch (tcode) {
1101 case FWTCODE_WRES:
1102 case FWTCODE_RRESQ:
1103 case FWTCODE_RRESB:
1104 case FWTCODE_LRES:
1105 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1106 fp->mode.hdr.tlrt >> 2, tcode);
1107 if (rb->xfer == NULL) {
1108 aprint_error_dev(rb->fc->bdev, "unknown response"
1109 " %s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1110 tcode_str[tcode], tcode,
1111 fp->mode.hdr.src,
1112 fp->mode.hdr.tlrt >> 2,
1113 fp->mode.hdr.tlrt & 3,
1114 fp->mode.rresq.data);
1115#if 0
1116 printf("try ad-hoc work around!!\n");
1117 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1118 (fp->mode.hdr.tlrt >> 2) ^ 3);
1119 if (rb->xfer == NULL) {
1120 printf("no use...\n");
1121 return;
1122 }
1123#else
1124 return;
1125#endif
1126 }
1127 fw_rcv_copy(rb);
1128 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1129 rb->xfer->resp = EIO;
1130 else
1131 rb->xfer->resp = 0;
1132 /* make sure the packet is drained in AT queue */
1133 oldstate = rb->xfer->flag;
1134 rb->xfer->flag = FWXF_RCVD;
1135 switch (oldstate) {
1136 case FWXF_SENT:
1137 fw_xfer_done(rb->xfer);
1138 break;
1139 case FWXF_START:
1140#if 0
1141 if (firewire_debug)
1142 printf("not sent yet tl=%x\n", rb->xfer->tl);
1143#endif
1144 break;
1145 default:
1146 aprint_error_dev(rb->fc->bdev,
1147 "unexpected flag 0x%02x\n", rb->xfer->flag);
1148 }
1149 return;
1150 case FWTCODE_WREQQ:
1151 case FWTCODE_WREQB:
1152 case FWTCODE_RREQQ:
1153 case FWTCODE_RREQB:
1154 case FWTCODE_LREQ:
1155 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1156 fp->mode.rreqq.dest_lo);
1157 if (bind == NULL) {
1158#if 1
1159 aprint_error_dev(rb->fc->bdev, "Unknown service addr"
1160 " 0x%04x:0x%08x %s(%x) src=0x%x data=%x\n",
1161 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1162 tcode_str[tcode], tcode,
1163 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1164#endif
1165 if (rb->fc->status == FWBUSINIT) {
1166 aprint_error_dev(rb->fc->bdev,
1167 "cannot respond(bus reset)!\n");
1168 return;
1169 }
1170 rb->xfer = fw_xfer_alloc(M_FW);
1171 if (rb->xfer == NULL)
1172 return;
1173 rb->xfer->send.spd = rb->spd;
1174 rb->xfer->send.pay_len = 0;
1175 resfp = &rb->xfer->send.hdr;
1176 switch (tcode) {
1177 case FWTCODE_WREQQ:
1178 case FWTCODE_WREQB:
1179 resfp->mode.hdr.tcode = FWTCODE_WRES;
1180 break;
1181 case FWTCODE_RREQQ:
1182 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1183 break;
1184 case FWTCODE_RREQB:
1185 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1186 break;
1187 case FWTCODE_LREQ:
1188 resfp->mode.hdr.tcode = FWTCODE_LRES;
1189 break;
1190 }
1191 resfp->mode.hdr.dst = fp->mode.hdr.src;
1192 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1193 resfp->mode.hdr.pri = fp->mode.hdr.pri;
1194 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1195 resfp->mode.rresb.extcode = 0;
1196 resfp->mode.rresb.len = 0;
1197/*
1198 rb->xfer->hand = fw_xferwake;
1199*/
1200 rb->xfer->hand = fw_xfer_free;
1201 if (fw_asyreq(rb->fc, -1, rb->xfer)) {
1202 fw_xfer_free(rb->xfer);
1203 return;
1204 }
1205 return;
1206 }
1207 len = 0;
1208 for (i = 0; i < rb->nvec; i++)
1209 len += rb->vec[i].iov_len;
1210 mutex_enter(&bind->fwb_mtx);
1211 rb->xfer = STAILQ_FIRST(&bind->xferlist);
1212 if (rb->xfer == NULL) {
1213 mutex_exit(&bind->fwb_mtx);
1214#if 1
1215 aprint_error_dev(rb->fc->bdev,
1216 "Discard a packet for this bind.\n");
1217#endif
1218 return;
1219 }
1220 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1221 mutex_exit(&bind->fwb_mtx);
1222 fw_rcv_copy(rb);
1223 rb->xfer->hand(rb->xfer);
1224 return;
1225
1226 default:
1227 aprint_error_dev(rb->fc->bdev, "unknow tcode %d\n", tcode);
1228 break;
1229 }
1230}
1231
1232/*
1233 * CRC16 check-sum for IEEE1394 register blocks.
1234 */
1235uint16_t
1236fw_crc16(uint32_t *ptr, uint32_t len)
1237{
1238 uint32_t i, sum, crc = 0;
1239 int shift;
1240
1241 len = (len + 3) & ~3;
1242 for (i = 0; i < len; i+= 4) {
1243 for (shift = 28; shift >= 0; shift -= 4) {
1244 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
1245 crc = (crc << 4) ^ (sum << 12) ^ (sum << 5) ^ sum;
1246 }
1247 crc &= 0xffff;
1248 }
1249 return (uint16_t)crc;
1250}
1251
1252int
1253fw_open_isodma(struct firewire_comm *fc, int tx)
1254{
1255 struct fw_xferq **xferqa;
1256 struct fw_xferq *xferq;
1257 int i;
1258
1259 if (tx)
1260 xferqa = fc->it;
1261 else
1262 xferqa = fc->ir;
1263
1264 mutex_enter(&fc->fc_mtx);
1265 for (i = 0; i < fc->nisodma; i++) {
1266 xferq = xferqa[i];
1267 if (!(xferq->flag & FWXFERQ_OPEN)) {
1268 xferq->flag |= FWXFERQ_OPEN;
1269 break;
1270 }
1271 }
1272 if (i == fc->nisodma) {
1273 aprint_error_dev(fc->bdev, "no free dma channel (tx=%d)\n", tx);
1274 i = -1;
1275 }
1276 mutex_exit(&fc->fc_mtx);
1277 return i;
1278}
1279
1280/*
1281 * Async. request with given xfer structure.
1282 */
1283static void
1284fw_asystart(struct fw_xfer *xfer)
1285{
1286 struct firewire_comm *fc = xfer->fc;
1287
1288 /* Protect from interrupt/timeout */
1289 mutex_enter(&xfer->q->q_mtx);
1290 xfer->flag = FWXF_INQ;
1291 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
1292#if 0
1293 xfer->q->queued++;
1294#endif
1295 mutex_exit(&xfer->q->q_mtx);
1296 /* XXX just queue for mbuf */
1297 if (xfer->mbuf == NULL)
1298 xfer->q->start(fc);
1299 return;
1300}
1301
1302static void
1303firewire_xfer_timeout(struct firewire_comm *fc)
1304{
1305 struct fw_xfer *xfer;
1306 struct timeval tv;
1307 struct timeval split_timeout;
1308 STAILQ_HEAD(, fw_xfer) xfer_timeout;
1309 int i;
1310
1311 split_timeout.tv_sec = 0;
1312 split_timeout.tv_usec = 200 * 1000; /* 200 msec */
1313
1314 microtime(&tv);
1315 timersub(&tv, &split_timeout, &tv);
1316 STAILQ_INIT(&xfer_timeout);
1317
1318 mutex_enter(&fc->tlabel_lock);
1319 for (i = 0; i < 0x40; i++) {
1320 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
1321 if ((xfer->flag & FWXF_SENT) == 0)
1322 /* not sent yet */
1323 break;
1324 if (timercmp(&xfer->tv, &tv, >))
1325 /* the rests are newer than this */
1326 break;
1327 aprint_error_dev(fc->bdev,
1328 "split transaction timeout: tl=0x%x flag=0x%02x\n",
1329 i, xfer->flag);
1330 fw_dump_hdr(&xfer->send.hdr, "send");
1331 xfer->resp = ETIMEDOUT;
1332 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
1333 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
1334 }
1335 }
1336 mutex_exit(&fc->tlabel_lock);
1337 fc->timeout(fc);
1338
1339 STAILQ_FOREACH(xfer, &xfer_timeout, tlabel)
1340 xfer->hand(xfer);
1341}
1342
1343#define WATCHDOG_HZ 10
1344static void
1345firewire_watchdog(void *arg)
1346{
1347 struct firewire_comm *fc;
1348 static int watchdog_clock = 0;
1349
1350 fc = (struct firewire_comm *)arg;
1351
1352 /*
1353 * At boot stage, the device interrupt is disabled and
1354 * We encounter a timeout easily. To avoid this,
1355 * ignore clock interrupt for a while.
1356 */
1357 if (watchdog_clock > WATCHDOG_HZ * 15)
1358 firewire_xfer_timeout(fc);
1359 else
1360 watchdog_clock++;
1361
1362 callout_schedule(&fc->timeout_callout, hz / WATCHDOG_HZ);
1363}
1364
1365static void
1366fw_xferq_drain(struct fw_xferq *xferq)
1367{
1368 struct fw_xfer *xfer;
1369
1370 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
1371 STAILQ_REMOVE_HEAD(&xferq->q, link);
1372#if 0
1373 xferq->queued--;
1374#endif
1375 xfer->resp = EAGAIN;
1376 xfer->flag = FWXF_SENTERR;
1377 fw_xfer_done(xfer);
1378 }
1379}
1380
1381static void
1382fw_reset_csr(struct firewire_comm *fc)
1383{
1384 int i;
1385
1386 CSRARC(fc, STATE_CLEAR) =
1387 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
1388 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
1389 CSRARC(fc, NODE_IDS) = 0x3f;
1390
1391 CSRARC(fc, TOPO_MAP + 8) = 0;
1392 fc->irm = -1;
1393
1394 fc->max_node = -1;
1395
1396 for (i = 2; i < 0x100/4 - 2; i++)
1397 CSRARC(fc, SPED_MAP + i * 4) = 0;
1398 CSRARC(fc, STATE_CLEAR) =
1399 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14;
1400 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
1401 CSRARC(fc, RESET_START) = 0;
1402 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
1403 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
1404 CSRARC(fc, CYCLE_TIME) = 0x0;
1405 CSRARC(fc, BUS_TIME) = 0x0;
1406 CSRARC(fc, BUS_MGR_ID) = 0x3f;
1407 CSRARC(fc, BANDWIDTH_AV) = 4915;
1408 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
1409 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
1410 CSRARC(fc, IP_CHANNELS) = (1 << 31);
1411
1412 CSRARC(fc, CONF_ROM) = 0x04 << 24;
1413 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
1414 CSRARC(fc, CONF_ROM + 8) =
1415 1 << 31 | 1 << 30 | 1 << 29 | 1 << 28 | 0xff << 16 | 0x09 << 8;
1416 CSRARC(fc, CONF_ROM + 0xc) = 0;
1417
1418/* DV depend CSRs see blue book */
1419 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
1420 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
1421
1422 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14);
1423 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
1424}
1425
1426static void
1427fw_init_crom(struct firewire_comm *fc)
1428{
1429 struct crom_src *src;
1430
1431 src = &fc->crom_src_buf->src;
1432 memset(src, 0, sizeof(struct crom_src));
1433
1434 /* BUS info sample */
1435 src->hdr.info_len = 4;
1436
1437 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
1438
1439 src->businfo.irmc = 1;
1440 src->businfo.cmc = 1;
1441 src->businfo.isc = 1;
1442 src->businfo.bmc = 1;
1443 src->businfo.pmc = 0;
1444 src->businfo.cyc_clk_acc = 100;
1445 src->businfo.max_rec = fc->maxrec;
1446 src->businfo.max_rom = MAXROM_4;
1447 src->businfo.generation = FW_GENERATION_CHANGEABLE;
1448 src->businfo.link_spd = fc->speed;
1449
1450 src->businfo.eui64.hi = fc->eui.hi;
1451 src->businfo.eui64.lo = fc->eui.lo;
1452
1453 STAILQ_INIT(&src->chunk_list);
1454
1455 fc->crom_src = src;
1456 fc->crom_root = &fc->crom_src_buf->root;
1457}
1458
1459static void
1460fw_reset_crom(struct firewire_comm *fc)
1461{
1462 struct crom_src_buf *buf;
1463 struct crom_src *src;
1464 struct crom_chunk *root;
1465
1466 buf = fc->crom_src_buf;
1467 src = fc->crom_src;
1468 root = fc->crom_root;
1469
1470 STAILQ_INIT(&src->chunk_list);
1471
1472 memset(root, 0, sizeof(struct crom_chunk));
1473 crom_add_chunk(src, NULL, root, 0);
1474 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
1475 /* private company_id */
1476 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
1477 crom_add_simple_text(src, root, &buf->vendor, PROJECT_STR);
1478 crom_add_entry(root, CSRKEY_HW, __NetBSD_Version__);
1479 crom_add_simple_text(src, root, &buf->hw, hostname);
1480}
1481
1482/*
1483 * dump packet header
1484 */
1485static void
1486fw_dump_hdr(struct fw_pkt *fp, const char *prefix)
1487{
1488
1489 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1490 "src=0x%03x\n", prefix,
1491 fp->mode.hdr.dst & 0x3f,
1492 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1493 fp->mode.hdr.tcode, fp->mode.hdr.pri,
1494 fp->mode.hdr.src);
1495}
1496
1497/*
1498 * To free transaction label.
1499 */
1500static void
1501fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1502{
1503 struct fw_xfer *txfer;
1504
1505 if (xfer->tl < 0)
1506 return;
1507
1508 mutex_enter(&fc->tlabel_lock);
1509#if 1 /* make sure the label is allocated */
1510 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1511 if (txfer == xfer)
1512 break;
1513 if (txfer == NULL) {
1514 mutex_exit(&fc->tlabel_lock);
1515 aprint_error_dev(fc->bdev,
1516 "the xfer is not in the queue (tlabel=%d, flag=0x%x)\n",
1517 xfer->tl, xfer->flag);
1518 fw_dump_hdr(&xfer->send.hdr, "send");
1519 fw_dump_hdr(&xfer->recv.hdr, "recv");
1520 KASSERT(FALSE);
1521 return;
1522 }
1523#endif
1524
1525 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1526 mutex_exit(&fc->tlabel_lock);
1527 return;
1528}
1529
1530/*
1531 * To obtain XFER structure by transaction label.
1532 */
1533static struct fw_xfer *
1534fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1535{
1536 struct fw_xfer *xfer;
1537 int req;
1538
1539 mutex_enter(&fc->tlabel_lock);
1540 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1541 if (xfer->send.hdr.mode.hdr.dst == node) {
1542 mutex_exit(&fc->tlabel_lock);
1543 KASSERT(xfer->tl == tlabel);
1544 /* extra sanity check */
1545 req = xfer->send.hdr.mode.hdr.tcode;
1546 if (xfer->fc->tcode[req].valid_res != tcode) {
1547 aprint_error_dev(fc->bdev,
1548 "invalid response tcode (0x%x for 0x%x)\n",
1549 tcode, req);
1550 return NULL;
1551 }
1552
1553 if (firewire_debug > 2)
1554 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1555 return xfer;
1556 }
1557 mutex_exit(&fc->tlabel_lock);
1558 if (firewire_debug > 1)
1559 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1560 return NULL;
1561}
1562
1563/*
1564 * To configure PHY.
1565 */
1566static void
1567fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1568{
1569 struct fw_xfer *xfer;
1570 struct fw_pkt *fp;
1571
1572 fc->status = FWBUSPHYCONF;
1573
1574 xfer = fw_xfer_alloc(M_FW);
1575 if (xfer == NULL)
1576 return;
1577 xfer->fc = fc;
1578 xfer->hand = fw_asy_callback_free;
1579
1580 fp = &xfer->send.hdr;
1581 fp->mode.ld[1] = 0;
1582 if (root_node >= 0)
1583 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1584 if (gap_count >= 0)
1585 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1586 fp->mode.ld[2] = ~fp->mode.ld[1];
1587/* XXX Dangerous, how to pass PHY packet to device driver */
1588 fp->mode.common.tcode |= FWTCODE_PHY;
1589
1590 if (firewire_debug)
1591 printf("root_node=%d gap_count=%d\n", root_node, gap_count);
1592 fw_asyreq(fc, -1, xfer);
1593}
1594
1595/*
1596 * Dump self ID.
1597 */
1598static void
1599fw_print_sid(uint32_t sid)
1600{
1601 union fw_self_id *s;
1602
1603 s = (union fw_self_id *) &sid;
1604 if (s->p0.sequel) {
1605 if (s->p1.sequence_num == FW_SELF_ID_PAGE0)
1606 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1607 "p8:%d p9:%d p10:%d\n",
1608 s->p1.phy_id, s->p1.port3, s->p1.port4,
1609 s->p1.port5, s->p1.port6, s->p1.port7,
1610 s->p1.port8, s->p1.port9, s->p1.port10);
1611 else if (s->p2.sequence_num == FW_SELF_ID_PAGE1)
1612 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1613 s->p2.phy_id, s->p2.port11, s->p2.port12,
1614 s->p2.port13, s->p2.port14, s->p2.port15);
1615 else
1616 printf("node:%d Unknown Self ID Page number %d\n",
1617 s->p1.phy_id, s->p1.sequence_num);
1618 } else
1619 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1620 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1621 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1622 s->p0.phy_speed, s->p0.contender,
1623 s->p0.power_class, s->p0.port0, s->p0.port1,
1624 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1625}
1626
1627/*
1628 * To probe devices on the IEEE1394 bus.
1629 */
1630static void
1631fw_bus_probe(struct firewire_comm *fc)
1632{
1633 struct fw_device *fwdev;
1634
1635 mutex_enter(&fc->wait_lock);
1636 fc->status = FWBUSEXPLORE;
1637
1638 /* Invalidate all devices, just after bus reset. */
1639 if (firewire_debug)
1640 printf("iterate and invalidate all nodes\n");
1641 mutex_enter(&fc->fc_mtx);
1642 STAILQ_FOREACH(fwdev, &fc->devices, link)
1643 if (fwdev->status != FWDEVINVAL) {
1644 fwdev->status = FWDEVINVAL;
1645 fwdev->rcnt = 0;
1646 if (firewire_debug)
1647 printf("Invalidate Dev ID: %08x%08x\n",
1648 fwdev->eui.hi, fwdev->eui.lo);
1649 } else
1650 if (firewire_debug)
1651 printf("Dev ID: %08x%08x already invalid\n",
1652 fwdev->eui.hi, fwdev->eui.lo);
1653 mutex_exit(&fc->fc_mtx);
1654
1655 cv_signal(&fc->fc_cv);
1656 mutex_exit(&fc->wait_lock);
1657}
1658
1659static int
1660fw_explore_read_quads(struct fw_device *fwdev, int offset, uint32_t *quad,
1661 int length)
1662{
1663 struct fw_xfer *xfer;
1664 uint32_t tmp;
1665 int i, error;
1666
1667 for (i = 0; i < length; i++, offset += sizeof(uint32_t)) {
1668 xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff,
1669 0xf0000000 | offset, (void *)&tmp, fw_xferwake);
1670 if (xfer == NULL)
1671 return -1;
1672 fw_xferwait(xfer);
1673
1674 if (xfer->resp == 0)
1675 quad[i] = ntohl(tmp);
1676
1677 error = xfer->resp;
1678 fw_xfer_free(xfer);
1679 if (error)
1680 return error;
1681 }
1682 return 0;
1683}
1684
1685
1686static int
1687fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1688{
1689 int err, i, off;
1690 struct csrdirectory *dir;
1691 struct csrreg *reg;
1692
1693
1694 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1695 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)dir,
1696 1);
1697 if (err)
1698 return -1;
1699
1700 offset += sizeof(uint32_t);
1701 reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)];
1702 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset, (uint32_t *)reg,
1703 dir->crc_len);
1704 if (err)
1705 return -1;
1706
1707 /* XXX check CRC */
1708
1709 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1710 if (fwdev->rommax < off)
1711 fwdev->rommax = off;
1712
1713 if (recur == 0)
1714 return 0;
1715
1716 for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) {
1717 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1718 recur = 1;
1719 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1720 recur = 0;
1721 else
1722 continue;
1723
1724 off = offset + reg[i].val * sizeof(uint32_t);
1725 if (off > CROMSIZE) {
1726 aprint_error_dev(fwdev->fc->bdev, "invalid offset %d\n",
1727 off);
1728 return -1;
1729 }
1730 err = fw_explore_csrblock(fwdev, off, recur);
1731 if (err)
1732 return -1;
1733 }
1734 return 0;
1735}
1736
1737static int
1738fw_explore_node(struct fw_device *dfwdev)
1739{
1740 struct firewire_comm *fc;
1741 struct fw_device *fwdev, *pfwdev, *tfwdev;
1742 struct csrhdr *hdr;
1743 struct bus_info *binfo;
1744 uint32_t *csr, speed_test = 0;
1745 int err, node;
1746
1747 fc = dfwdev->fc;
1748 csr = dfwdev->csrrom;
1749 node = dfwdev->dst;
1750
1751 /* First quad */
1752 err = fw_explore_read_quads(dfwdev, CSRROMOFF, csr, 1);
1753 if (err) {
1754 aprint_error_dev(fc->bdev,
1755 "node%d: explore_read_quads failure\n", node);
1756 dfwdev->status = FWDEVINVAL;
1757 return -1;
1758 }
1759 hdr = (struct csrhdr *)csr;
1760 if (hdr->info_len != 4) {
1761 if (firewire_debug)
1762 printf("node%d: wrong bus info len(%d)\n",
1763 node, hdr->info_len);
1764 dfwdev->status = FWDEVINVAL;
1765 return -1;
1766 }
1767
1768 /* bus info */
1769 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1770 if (err) {
1771 aprint_error_dev(fc->bdev, "node%d: error reading 0x04\n",
1772 node);
1773 dfwdev->status = FWDEVINVAL;
1774 return -1;
1775 }
1776 binfo = (struct bus_info *)&csr[1];
1777 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1778 aprint_error_dev(fc->bdev, "node%d: invalid bus name 0x%08x\n",
1779 node, binfo->bus_name);
1780 dfwdev->status = FWDEVINVAL;
1781 return -1;
1782 }
1783 if (firewire_debug)
1784 printf("node(%d) BUS INFO BLOCK:\n"
1785 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1786 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1787 "generation(%d) link_spd(%d)\n",
1788 node, binfo->irmc, binfo->cmc, binfo->isc,
1789 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1790 binfo->max_rec, binfo->max_rom,
1791 binfo->generation, binfo->link_spd);
1792
1793 mutex_enter(&fc->fc_mtx);
1794 STAILQ_FOREACH(fwdev, &fc->devices, link)
1795 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1796 break;
1797 mutex_exit(&fc->fc_mtx);
1798 if (fwdev == NULL) {
1799 /* new device */
1800 fwdev =
1801 malloc(sizeof(struct fw_device), M_FW, M_NOWAIT | M_ZERO);
1802 if (fwdev == NULL) {
1803 if (firewire_debug)
1804 printf("node%d: no memory\n", node);
1805 return -1;
1806 }
1807 fwdev->fc = fc;
1808 fwdev->eui = binfo->eui64;
1809 fwdev->dst = dfwdev->dst;
1810 fwdev->maxrec = dfwdev->maxrec;
1811 fwdev->status = FWDEVNEW;
1812 /*
1813 * Pre-1394a-2000 didn't have link_spd in
1814 * the Bus Info block, so try and use the
1815 * speed map value.
1816 * 1394a-2000 compliant devices only use
1817 * the Bus Info Block link spd value, so
1818 * ignore the speed map alltogether. SWB
1819 */
1820 if (binfo->link_spd == FWSPD_S100 /* 0 */) {
1821 aprint_normal_dev(fc->bdev,
1822 "Pre 1394a-2000 detected\n");
1823 fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1824 } else
1825 fwdev->speed = binfo->link_spd;
1826 /*
1827 * Test this speed with a read to the CSRROM.
1828 * If it fails, slow down the speed and retry.
1829 */
1830 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1831 err = fw_explore_read_quads(fwdev, CSRROMOFF,
1832 &speed_test, 1);
1833 if (err) {
1834 aprint_error_dev(fc->bdev, "fwdev->speed(%s)"
1835 " decremented due to negotiation\n",
1836 fw_linkspeed[fwdev->speed]);
1837 fwdev->speed--;
1838 } else
1839 break;
1840 }
1841 /*
1842 * If the fwdev is not found in the
1843 * fc->devices TAILQ, then we will add it.
1844 */
1845 pfwdev = NULL;
1846 mutex_enter(&fc->fc_mtx);
1847 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1848 if (tfwdev->eui.hi > fwdev->eui.hi ||
1849 (tfwdev->eui.hi == fwdev->eui.hi &&
1850 tfwdev->eui.lo > fwdev->eui.lo))
1851 break;
1852 pfwdev = tfwdev;
1853 }
1854 if (pfwdev == NULL)
1855 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1856 else
1857 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1858 mutex_exit(&fc->fc_mtx);
1859
1860 aprint_normal_dev(fc->bdev, "New %s device ID:%08x%08x\n",
1861 fw_linkspeed[fwdev->speed], fwdev->eui.hi, fwdev->eui.lo);
1862 } else {
1863 fwdev->dst = node;
1864 fwdev->status = FWDEVINIT;
1865 /* unchanged ? */
1866 if (memcmp(csr, fwdev->csrrom, sizeof(uint32_t) * 5) == 0) {
1867 if (firewire_debug)
1868 printf("node%d: crom unchanged\n", node);
1869 return 0;
1870 }
1871 }
1872
1873 memset(fwdev->csrrom, 0, CROMSIZE);
1874
1875 /* copy first quad and bus info block */
1876 memcpy(fwdev->csrrom, csr, sizeof(uint32_t) * 5);
1877 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1878
1879 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1880
1881 if (err) {
1882 if (firewire_debug)
1883 printf("explore csrblock failed err(%d)\n", err);
1884 fwdev->status = FWDEVINVAL;
1885 fwdev->csrrom[0] = 0;
1886 }
1887 return err;
1888}
1889
1890/*
1891 * Find the self_id packet for a node, ignoring sequels.
1892 */
1893static union fw_self_id *
1894fw_find_self_id(struct firewire_comm *fc, int node)
1895{
1896 uint32_t i;
1897 union fw_self_id *s;
1898
1899 for (i = 0; i < fc->topology_map->self_id_count; i++) {
1900 s = &fc->topology_map->self_id[i];
1901 if (s->p0.sequel)
1902 continue;
1903 if (s->p0.phy_id == node)
1904 return s;
1905 }
1906 return 0;
1907}
1908
1909static void
1910fw_explore(struct firewire_comm *fc)
1911{
1912 struct fw_device *dfwdev;
1913 union fw_self_id *fwsid;
1914 int node, err, i, todo, todo2, trys;
1915 char nodes[63];
1916
1917 todo = 0;
1918 dfwdev = malloc(sizeof(*dfwdev), M_TEMP, M_NOWAIT);
1919 if (dfwdev == NULL)
1920 return;
1921 /* setup dummy fwdev */
1922 dfwdev->fc = fc;
1923 dfwdev->speed = 0;
1924 dfwdev->maxrec = 8; /* 512 */
1925 dfwdev->status = FWDEVINIT;
1926
1927 for (node = 0; node <= fc->max_node; node++) {
1928 /* We don't probe myself and linkdown nodes */
1929 if (node == fc->nodeid) {
1930 if (firewire_debug)
1931 printf("found myself node(%d) fc->nodeid(%d)"
1932 " fc->max_node(%d)\n",
1933 node, fc->nodeid, fc->max_node);
1934 continue;
1935 } else if (firewire_debug)
1936 printf("node(%d) fc->max_node(%d) found\n",
1937 node, fc->max_node);
1938 fwsid = fw_find_self_id(fc, node);
1939 if (!fwsid || !fwsid->p0.link_active) {
1940 if (firewire_debug)
1941 printf("node%d: link down\n", node);
1942 continue;
1943 }
1944 nodes[todo++] = node;
1945 }
1946
1947 for (trys = 0; todo > 0 && trys < 3; trys++) {
1948 todo2 = 0;
1949 for (i = 0; i < todo; i++) {
1950 dfwdev->dst = nodes[i];
1951 err = fw_explore_node(dfwdev);
1952 if (err)
1953 nodes[todo2++] = nodes[i];
1954 if (firewire_debug)
1955 printf("node %d, err = %d\n", nodes[i], err);
1956 }
1957 todo = todo2;
1958 }
1959 free(dfwdev, M_TEMP);
1960}
1961
1962static void
1963fw_bus_probe_thread(void *arg)
1964{
1965 struct firewire_comm *fc = (struct firewire_comm *)arg;
1966
1967 /*
1968 * Tell config we've scanned the bus.
1969 *
1970 * XXX This is not right -- we haven't actually scanned it. We
1971 * probably ought to call this after the first bus exploration.
1972 *
1973 * bool once = false;
1974 * ...
1975 * fw_attach_dev(fc);
1976 * if (!once) {
1977 * config_pending_decr();
1978 * once = true;
1979 * }
1980 */
1981 config_pending_decr(fc->bdev);
1982
1983 mutex_enter(&fc->wait_lock);
1984 while (fc->status != FWBUSDETACH) {
1985 if (fc->status == FWBUSEXPLORE) {
1986 mutex_exit(&fc->wait_lock);
1987 fw_explore(fc);
1988 fc->status = FWBUSEXPDONE;
1989 if (firewire_debug)
1990 printf("bus_explore done\n");
1991 fw_attach_dev(fc);
1992 mutex_enter(&fc->wait_lock);
1993 }
1994 cv_wait_sig(&fc->fc_cv, &fc->wait_lock);
1995 }
1996 fc->status = FWBUSDETACHOK;
1997 cv_signal(&fc->fc_cv);
1998 mutex_exit(&fc->wait_lock);
1999 kthread_exit(0);
2000
2001 /* NOTREACHED */
2002}
2003
2004static const char *
2005fw_get_devclass(struct fw_device *fwdev)
2006{
2007 struct crom_context cc;
2008 struct csrreg *reg;
2009
2010 crom_init_context(&cc, fwdev->csrrom);
2011 reg = crom_search_key(&cc, CSRKEY_VER);
2012 if (reg == NULL)
2013 return "null";
2014
2015 switch (reg->val) {
2016 case CSR_PROTAVC:
2017 return "av/c";
2018 case CSR_PROTCAL:
2019 return "cal";
2020 case CSR_PROTEHS:
2021 return "ehs";
2022 case CSR_PROTHAVI:
2023 return "havi";
2024 case CSR_PROTCAM104:
2025 return "cam104";
2026 case CSR_PROTCAM120:
2027 return "cam120";
2028 case CSR_PROTCAM130:
2029 return "cam130";
2030 case CSR_PROTDPP:
2031 return "printer";
2032 case CSR_PROTIICP:
2033 return "iicp";
2034 case CSRVAL_T10SBP2:
2035 return "sbp";
2036 default:
2037 if (firewire_debug)
2038 printf("%s: reg->val 0x%x\n",
2039 __func__, reg->val);
2040 return "sbp";
2041 }
2042}
2043
2044/*
2045 * To attach sub-devices layer onto IEEE1394 bus.
2046 */
2047static void
2048fw_attach_dev(struct firewire_comm *fc)
2049{
2050 struct firewire_softc *sc = device_private(fc->bdev);
2051 struct firewire_dev_list *devlist, *elm;
2052 struct fw_device *fwdev, *next;
2053 struct firewire_dev_comm *fdc;
2054 struct fw_attach_args fwa;
2055 int locs[IEEE1394IFCF_NLOCS];
2056
2057 fwa.name = "null";
2058 fwa.fc = fc;
2059
2060 mutex_enter(&fc->fc_mtx);
2061 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
2062 next = STAILQ_NEXT(fwdev, link);
2063 mutex_exit(&fc->fc_mtx);
2064 switch (fwdev->status) {
2065 case FWDEVNEW:
2066 devlist = malloc(sizeof(struct firewire_dev_list),
2067 M_DEVBUF, M_NOWAIT);
2068 if (devlist == NULL) {
2069 aprint_error_dev(fc->bdev,
2070 "memory allocation failed\n");
2071 break;
2072 }
2073
2074 locs[IEEE1394IFCF_EUIHI] = fwdev->eui.hi;
2075 locs[IEEE1394IFCF_EUILO] = fwdev->eui.lo;
2076
2077 fwa.name = fw_get_devclass(fwdev);
2078 fwa.fwdev = fwdev;
2079 fwdev->dev = config_found_sm_loc(sc->dev, "ieee1394if",
2080 locs, &fwa, firewire_print, config_stdsubmatch);
2081 if (fwdev->dev == NULL) {
2082 free(devlist, M_DEVBUF);
2083 break;
2084 }
2085
2086 devlist->fwdev = fwdev;
2087 devlist->dev = fwdev->dev;
2088
2089 mutex_enter(&fc->fc_mtx);
2090 if (SLIST_EMPTY(&sc->devlist))
2091 SLIST_INSERT_HEAD(&sc->devlist, devlist, link);
2092 else {
2093 for (elm = SLIST_FIRST(&sc->devlist);
2094 SLIST_NEXT(elm, link) != NULL;
2095 elm = SLIST_NEXT(elm, link));
2096 SLIST_INSERT_AFTER(elm, devlist, link);
2097 }
2098 mutex_exit(&fc->fc_mtx);
2099
2100 /* FALLTHROUGH */
2101
2102 case FWDEVINIT:
2103 case FWDEVATTACHED:
2104 fwdev->status = FWDEVATTACHED;
2105 break;
2106
2107 case FWDEVINVAL:
2108 fwdev->rcnt++;
2109 if (firewire_debug)
2110 printf("fwdev->rcnt(%d), hold_count(%d)\n",
2111 fwdev->rcnt, hold_count);
2112 break;
2113
2114 default:
2115 /* XXX */
2116 break;
2117 }
2118 mutex_enter(&fc->fc_mtx);
2119 }
2120 mutex_exit(&fc->fc_mtx);
2121
2122 SLIST_FOREACH(devlist, &sc->devlist, link) {
2123 fdc = device_private(devlist->dev);
2124 if (fdc->post_explore != NULL)
2125 fdc->post_explore(fdc);
2126 }
2127
2128 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
2129 next = STAILQ_NEXT(fwdev, link);
2130 if (fwdev->rcnt > 0 && fwdev->rcnt > hold_count) {
2131 /*
2132 * Remove devices which have not been seen
2133 * for a while.
2134 */
2135 SLIST_FOREACH(devlist, &sc->devlist, link)
2136 if (devlist->fwdev == fwdev)
2137 break;
2138
2139 if (devlist == NULL)
2140 continue;
2141
2142 if (devlist->fwdev != fwdev)
2143 panic("already detached");
2144
2145 SLIST_REMOVE(&sc->devlist, devlist, firewire_dev_list,
2146 link);
2147 free(devlist, M_DEVBUF);
2148
2149 if (config_detach(fwdev->dev, DETACH_FORCE) != 0)
2150 return;
2151
2152 STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link);
2153 free(fwdev, M_FW);
2154 }
2155 }
2156
2157 return;
2158}
2159
2160/*
2161 * To allocate unique transaction label.
2162 */
2163static int
2164fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
2165{
2166 u_int dst, new_tlabel;
2167 struct fw_xfer *txfer;
2168
2169 dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
2170 mutex_enter(&fc->tlabel_lock);
2171 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
2172 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
2173 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
2174 break;
2175 if (txfer == NULL) {
2176 fc->last_tlabel[dst] = new_tlabel;
2177 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
2178 mutex_exit(&fc->tlabel_lock);
2179 xfer->tl = new_tlabel;
2180 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
2181 if (firewire_debug > 1)
2182 printf("fw_get_tlabel: dst=%d tl=%d\n",
2183 dst, new_tlabel);
2184 return new_tlabel;
2185 }
2186 mutex_exit(&fc->tlabel_lock);
2187
2188 if (firewire_debug > 1)
2189 printf("fw_get_tlabel: no free tlabel\n");
2190 return -1;
2191}
2192
2193static void
2194fw_rcv_copy(struct fw_rcv_buf *rb)
2195{
2196 struct fw_pkt *pkt;
2197 u_char *p;
2198 const struct tcode_info *tinfo;
2199 u_int res, i, len, plen;
2200
2201 rb->xfer->recv.spd = rb->spd;
2202
2203 pkt = (struct fw_pkt *)rb->vec->iov_base;
2204 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
2205
2206 /* Copy header */
2207 p = (u_char *)&rb->xfer->recv.hdr;
2208 memcpy(p, rb->vec->iov_base, tinfo->hdr_len);
2209 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
2210 rb->vec->iov_len -= tinfo->hdr_len;
2211
2212 /* Copy payload */
2213 p = (u_char *)rb->xfer->recv.payload;
2214 res = rb->xfer->recv.pay_len;
2215
2216 /* special handling for RRESQ */
2217 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
2218 p != NULL && res >= sizeof(uint32_t)) {
2219 *(uint32_t *)p = pkt->mode.rresq.data;
2220 rb->xfer->recv.pay_len = sizeof(uint32_t);
2221 return;
2222 }
2223
2224 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
2225 return;
2226
2227 plen = pkt->mode.rresb.len;
2228
2229 for (i = 0; i < rb->nvec; i++, rb->vec++) {
2230 len = MIN(rb->vec->iov_len, plen);
2231 if (res < len) {
2232 aprint_error_dev(rb->fc->bdev,
2233 "rcv buffer(%d) is %d bytes short.\n",
2234 rb->xfer->recv.pay_len, len - res);
2235 len = res;
2236 }
2237 if (p) {
2238 memcpy(p, rb->vec->iov_base, len);
2239 p += len;
2240 }
2241 res -= len;
2242 plen -= len;
2243 if (res == 0 || plen == 0)
2244 break;
2245 }
2246 rb->xfer->recv.pay_len -= res;
2247
2248}
2249
2250/*
2251 * Post process for Bus Manager election process.
2252 */
2253static void
2254fw_try_bmr_callback(struct fw_xfer *xfer)
2255{
2256 struct firewire_comm *fc;
2257 int bmr;
2258
2259 if (xfer == NULL)
2260 return;
2261 fc = xfer->fc;
2262 if (xfer->resp != 0)
2263 goto error;
2264 if (xfer->recv.payload == NULL)
2265 goto error;
2266 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2267 goto error;
2268
2269 bmr = ntohl(xfer->recv.payload[0]);
2270 if (bmr == 0x3f)
2271 bmr = fc->nodeid;
2272
2273 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2274 fw_xfer_free_buf(xfer);
2275 fw_bmr(fc);
2276 return;
2277
2278error:
2279 aprint_error_dev(fc->bdev, "bus manager election failed\n");
2280 fw_xfer_free_buf(xfer);
2281}
2282
2283
2284/*
2285 * To candidate Bus Manager election process.
2286 */
2287static void
2288fw_try_bmr(void *arg)
2289{
2290 struct fw_xfer *xfer;
2291 struct firewire_comm *fc = (struct firewire_comm *)arg;
2292 struct fw_pkt *fp;
2293 int err = 0;
2294
2295 xfer = fw_xfer_alloc_buf(M_FW, 8, 4);
2296 if (xfer == NULL)
2297 return;
2298 xfer->send.spd = 0;
2299 fc->status = FWBUSMGRELECT;
2300
2301 fp = &xfer->send.hdr;
2302 fp->mode.lreq.dest_hi = 0xffff;
2303 fp->mode.lreq.tlrt = 0;
2304 fp->mode.lreq.tcode = FWTCODE_LREQ;
2305 fp->mode.lreq.pri = 0;
2306 fp->mode.lreq.src = 0;
2307 fp->mode.lreq.len = 8;
2308 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2309 fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2310 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2311 xfer->send.payload[0] = htonl(0x3f);
2312 xfer->send.payload[1] = htonl(fc->nodeid);
2313 xfer->hand = fw_try_bmr_callback;
2314
2315 err = fw_asyreq(fc, -1, xfer);
2316 if (err) {
2317 fw_xfer_free_buf(xfer);
2318 return;
2319 }
2320 return;
2321}
2322
2323/*
2324 * Find the root node, if it is not
2325 * Cycle Master Capable, then we should
2326 * override this and become the Cycle
2327 * Master
2328 */
2329static int
2330fw_bmr(struct firewire_comm *fc)
2331{
2332 struct fw_device fwdev;
2333 union fw_self_id *self_id;
2334 int cmstr;
2335 uint32_t quad;
2336
2337 /* Check to see if the current root node is cycle master capable */
2338 self_id = fw_find_self_id(fc, fc->max_node);
2339 if (fc->max_node > 0) {
2340 /* XXX check cmc bit of businfo block rather than contender */
2341 if (self_id->p0.link_active && self_id->p0.contender)
2342 cmstr = fc->max_node;
2343 else {
2344 aprint_normal_dev(fc->bdev,
2345 "root node is not cycle master capable\n");
2346 /* XXX shall we be the cycle master? */
2347 cmstr = fc->nodeid;
2348 /* XXX need bus reset */
2349 }
2350 } else
2351 cmstr = -1;
2352
2353 aprint_normal_dev(fc->bdev, "bus manager %d%s\n",
2354 CSRARC(fc, BUS_MGR_ID),
2355 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? " (me)" : "");
2356 if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid)
2357 /* We are not the bus manager */
2358 return 0;
2359
2360 /* Optimize gapcount */
2361 if (fc->max_hop <= MAX_GAPHOP)
2362 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2363 /* If we are the cycle master, nothing to do */
2364 if (cmstr == fc->nodeid || cmstr == -1)
2365 return 0;
2366 /* Bus probe has not finished, make dummy fwdev for cmstr */
2367 memset(&fwdev, 0, sizeof(fwdev));
2368 fwdev.fc = fc;
2369 fwdev.dst = cmstr;
2370 fwdev.speed = 0;
2371 fwdev.maxrec = 8; /* 512 */
2372 fwdev.status = FWDEVINIT;
2373 /* Set cmstr bit on the cycle master */
2374 quad = htonl(1 << 8);
2375 fwmem_write_quad(&fwdev, NULL, 0/*spd*/, 0xffff, 0xf0000000 | STATE_SET,
2376 &quad, fw_asy_callback_free);
2377
2378 return 0;
2379}
2380