1 /*-
2 * Copyright (c) 2003 Hidetoshi Shimokawa
3 * Copyright (c) 1998-2002 Katsushi Kobayashi and Hidetoshi Shimokawa
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the acknowledgement as bellow:
16 *
17 * This product includes software developed by K. Kobayashi and H. Shimokawa
18 *
19 * 4. The name of the author may not be used to endorse or promote products
20 * derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/types.h>
41
42 #include <sys/jail.h>
43 #include <sys/kernel.h>
44 #include <sys/module.h>
45 #include <sys/malloc.h>
46 #include <sys/conf.h>
47 #include <sys/sysctl.h>
48 #include <sys/kthread.h>
49
50 #include <sys/kdb.h>
51
52 #if defined(__DragonFly__) || __FreeBSD_version < 500000
53 #include <machine/clock.h> /* for DELAY() */
54 #endif
55
56 #include <sys/bus.h> /* used by smbus and newbus */
57 #include <machine/bus.h>
58
59 #ifdef __DragonFly__
60 #include "firewire.h"
61 #include "firewirereg.h"
62 #include "fwmem.h"
63 #include "iec13213.h"
64 #include "iec68113.h"
65 #else
66 #include <dev/firewire/firewire.h>
67 #include <dev/firewire/firewirereg.h>
68 #include <dev/firewire/fwmem.h>
69 #include <dev/firewire/iec13213.h>
70 #include <dev/firewire/iec68113.h>
71 #endif
72
73 struct crom_src_buf {
74 struct crom_src src;
75 struct crom_chunk root;
76 struct crom_chunk vendor;
77 struct crom_chunk hw;
78 };
79
80 int firewire_debug=0, try_bmr=1, hold_count=0;
81 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
82 "FireWire driver debug flag");
83 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
84 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
85 "Try to be a bus manager");
86 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
87 "Number of count of bus resets for removing lost device information");
88
89 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
90 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
91
92 #define FW_MAXASYRTY 4
93
94 devclass_t firewire_devclass;
95
96 static void firewire_identify (driver_t *, device_t);
97 static int firewire_probe (device_t);
98 static int firewire_attach (device_t);
99 static int firewire_detach (device_t);
100 static int firewire_resume (device_t);
101 static void firewire_xfer_timeout(void *, int);
102 #if 0
103 static int firewire_shutdown (device_t);
104 #endif
105 static device_t firewire_add_child(device_t, u_int, const char *, int);
106 static void fw_try_bmr (void *);
107 static void fw_try_bmr_callback (struct fw_xfer *);
108 static void fw_asystart (struct fw_xfer *);
109 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
110 static void fw_bus_probe (struct firewire_comm *);
111 static void fw_attach_dev (struct firewire_comm *);
112 static void fw_bus_probe_thread(void *);
113 #ifdef FW_VMACCESS
114 static void fw_vmaccess (struct fw_xfer *);
115 #endif
116 static int fw_bmr (struct firewire_comm *);
117 static void fw_dump_hdr(struct fw_pkt *, char *);
118
119 static device_method_t firewire_methods[] = {
120 /* Device interface */
121 DEVMETHOD(device_identify, firewire_identify),
122 DEVMETHOD(device_probe, firewire_probe),
123 DEVMETHOD(device_attach, firewire_attach),
124 DEVMETHOD(device_detach, firewire_detach),
125 DEVMETHOD(device_suspend, bus_generic_suspend),
126 DEVMETHOD(device_resume, firewire_resume),
127 DEVMETHOD(device_shutdown, bus_generic_shutdown),
128
129 /* Bus interface */
130 DEVMETHOD(bus_add_child, firewire_add_child),
131
132 DEVMETHOD_END
133 };
134 char *linkspeed[] = {
135 "S100", "S200", "S400", "S800",
136 "S1600", "S3200", "undef", "undef"
137 };
138
139 static char *tcode_str[] = {
140 "WREQQ", "WREQB", "WRES", "undef",
141 "RREQQ", "RREQB", "RRESQ", "RRESB",
142 "CYCS", "LREQ", "STREAM", "LRES",
143 "undef", "undef", "PHY", "undef"
144 };
145
146 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
147 #define MAX_GAPHOP 15
148 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18,
149 21, 24, 26, 29, 32, 35, 37, 40};
150
151 static driver_t firewire_driver = {
152 "firewire",
153 firewire_methods,
154 sizeof(struct firewire_softc),
155 };
156
157 /*
158 * Lookup fwdev by node id.
159 */
160 struct fw_device *
fw_noderesolve_nodeid(struct firewire_comm * fc,int dst)161 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
162 {
163 struct fw_device *fwdev;
164 int s;
165
166 s = splfw();
167 STAILQ_FOREACH(fwdev, &fc->devices, link)
168 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
169 break;
170 splx(s);
171
172 return fwdev;
173 }
174
175 /*
176 * Lookup fwdev by EUI64.
177 */
178 struct fw_device *
fw_noderesolve_eui64(struct firewire_comm * fc,struct fw_eui64 * eui)179 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
180 {
181 struct fw_device *fwdev;
182 int s;
183
184 s = splfw();
185 FW_GLOCK(fc);
186 STAILQ_FOREACH(fwdev, &fc->devices, link)
187 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
188 break;
189 FW_GUNLOCK(fc);
190 splx(s);
191
192 if(fwdev == NULL) return NULL;
193 if(fwdev->status == FWDEVINVAL) return NULL;
194 return fwdev;
195 }
196
197 /*
198 * Async. request procedure for userland application.
199 */
200 int
fw_asyreq(struct firewire_comm * fc,int sub,struct fw_xfer * xfer)201 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
202 {
203 int err = 0;
204 struct fw_xferq *xferq;
205 int len;
206 struct fw_pkt *fp;
207 int tcode;
208 struct tcode_info *info;
209
210 if(xfer == NULL) return EINVAL;
211 if(xfer->hand == NULL){
212 printf("hand == NULL\n");
213 return EINVAL;
214 }
215 fp = &xfer->send.hdr;
216
217 tcode = fp->mode.common.tcode & 0xf;
218 info = &fc->tcode[tcode];
219 if (info->flag == 0) {
220 printf("invalid tcode=%x\n", tcode);
221 return EINVAL;
222 }
223
224 /* XXX allow bus explore packets only after bus rest */
225 if ((fc->status < FWBUSEXPLORE) &&
226 ((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
227 (fp->mode.rreqq.dest_lo < 0xf0000000) ||
228 (fp->mode.rreqq.dest_lo >= 0xf0001000))) {
229 xfer->resp = EAGAIN;
230 xfer->flag = FWXF_BUSY;
231 return (EAGAIN);
232 }
233
234 if (info->flag & FWTI_REQ)
235 xferq = fc->atq;
236 else
237 xferq = fc->ats;
238 len = info->hdr_len;
239 if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
240 printf("send.pay_len > maxrec\n");
241 return EINVAL;
242 }
243 if (info->flag & FWTI_BLOCK_STR)
244 len = fp->mode.stream.len;
245 else if (info->flag & FWTI_BLOCK_ASY)
246 len = fp->mode.rresb.len;
247 else
248 len = 0;
249 if (len != xfer->send.pay_len){
250 printf("len(%d) != send.pay_len(%d) %s(%x)\n",
251 len, xfer->send.pay_len, tcode_str[tcode], tcode);
252 return EINVAL;
253 }
254
255 if(xferq->start == NULL){
256 printf("xferq->start == NULL\n");
257 return EINVAL;
258 }
259 if(!(xferq->queued < xferq->maxq)){
260 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
261 xferq->queued);
262 return EAGAIN;
263 }
264
265 xfer->tl = -1;
266 if (info->flag & FWTI_TLABEL) {
267 if (fw_get_tlabel(fc, xfer) < 0)
268 return EAGAIN;
269 }
270
271 xfer->resp = 0;
272 xfer->fc = fc;
273 xfer->q = xferq;
274
275 fw_asystart(xfer);
276 return err;
277 }
278 /*
279 * Wakeup blocked process.
280 */
281 void
fw_xferwake(struct fw_xfer * xfer)282 fw_xferwake(struct fw_xfer *xfer)
283 {
284 struct mtx *lock = &xfer->fc->wait_lock;
285
286 mtx_lock(lock);
287 xfer->flag |= FWXF_WAKE;
288 mtx_unlock(lock);
289
290 wakeup(xfer);
291 return;
292 }
293
294 int
fw_xferwait(struct fw_xfer * xfer)295 fw_xferwait(struct fw_xfer *xfer)
296 {
297 struct mtx *lock = &xfer->fc->wait_lock;
298 int err = 0;
299
300 mtx_lock(lock);
301 if ((xfer->flag & FWXF_WAKE) == 0)
302 err = msleep((void *)xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
303 mtx_unlock(lock);
304
305 return (err);
306 }
307
308 /*
309 * Async. request with given xfer structure.
310 */
311 static void
fw_asystart(struct fw_xfer * xfer)312 fw_asystart(struct fw_xfer *xfer)
313 {
314 struct firewire_comm *fc = xfer->fc;
315 int s;
316 s = splfw();
317 /* Protect from interrupt/timeout */
318 FW_GLOCK(fc);
319 xfer->flag = FWXF_INQ;
320 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
321 #if 0
322 xfer->q->queued ++;
323 #endif
324 FW_GUNLOCK(fc);
325 splx(s);
326 /* XXX just queue for mbuf */
327 if (xfer->mbuf == NULL)
328 xfer->q->start(fc);
329 return;
330 }
331
332 static void
firewire_identify(driver_t * driver,device_t parent)333 firewire_identify(driver_t *driver, device_t parent)
334 {
335 BUS_ADD_CHILD(parent, 0, "firewire", -1);
336 }
337
338 static int
firewire_probe(device_t dev)339 firewire_probe(device_t dev)
340 {
341 device_set_desc(dev, "IEEE1394(FireWire) bus");
342 return (0);
343 }
344
345 static void
firewire_xfer_timeout(void * arg,int pending)346 firewire_xfer_timeout(void *arg, int pending)
347 {
348 struct firewire_comm *fc = (struct firewire_comm *)arg;
349 struct fw_xfer *xfer, *txfer;
350 struct timeval tv;
351 struct timeval split_timeout;
352 STAILQ_HEAD(, fw_xfer) xfer_timeout;
353 int i, s;
354
355 split_timeout.tv_sec = 0;
356 split_timeout.tv_usec = 200 * 1000; /* 200 msec */
357
358 microtime(&tv);
359 timevalsub(&tv, &split_timeout);
360 STAILQ_INIT(&xfer_timeout);
361
362 s = splfw();
363 mtx_lock(&fc->tlabel_lock);
364 for (i = 0; i < 0x40; i ++) {
365 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
366 if ((xfer->flag & FWXF_SENT) == 0)
367 /* not sent yet */
368 break;
369 if (timevalcmp(&xfer->tv, &tv, >))
370 /* the rests are newer than this */
371 break;
372 device_printf(fc->bdev,
373 "split transaction timeout: "
374 "tl=0x%x flag=0x%02x\n", i, xfer->flag);
375 fw_dump_hdr(&xfer->send.hdr, "send");
376 xfer->resp = ETIMEDOUT;
377 xfer->tl = -1;
378 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
379 STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
380 }
381 }
382 mtx_unlock(&fc->tlabel_lock);
383 splx(s);
384 fc->timeout(fc);
385
386 STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
387 xfer->hand(xfer);
388 }
389
390 #define WATCHDOG_HZ 10
391 static void
firewire_watchdog(void * arg)392 firewire_watchdog(void *arg)
393 {
394 struct firewire_comm *fc;
395 static int watchdog_clock = 0;
396
397 fc = (struct firewire_comm *)arg;
398
399 /*
400 * At boot stage, the device interrupt is disabled and
401 * We encounter a timeout easily. To avoid this,
402 * ignore clock interrupt for a while.
403 */
404 if (watchdog_clock > WATCHDOG_HZ * 15)
405 taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
406 else
407 watchdog_clock ++;
408
409 callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
410 (void *)firewire_watchdog, (void *)fc);
411 }
412
413 /*
414 * The attach routine.
415 */
416 static int
firewire_attach(device_t dev)417 firewire_attach(device_t dev)
418 {
419 int unit;
420 struct firewire_softc *sc = device_get_softc(dev);
421 device_t pa = device_get_parent(dev);
422 struct firewire_comm *fc;
423
424 fc = (struct firewire_comm *)device_get_softc(pa);
425 sc->fc = fc;
426 fc->status = FWBUSNOTREADY;
427
428 unit = device_get_unit(dev);
429 if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
430
431 fwdev_makedev(sc);
432
433 fc->crom_src_buf = (struct crom_src_buf *)malloc(
434 sizeof(struct crom_src_buf),
435 M_FW, M_NOWAIT | M_ZERO);
436 if (fc->crom_src_buf == NULL) {
437 device_printf(fc->dev, "%s: Malloc Failure crom src buff\n", __func__);
438 return ENOMEM;
439 }
440 fc->topology_map = (struct fw_topology_map *)malloc(
441 sizeof(struct fw_topology_map),
442 M_FW, M_NOWAIT | M_ZERO);
443 if (fc->topology_map == NULL) {
444 device_printf(fc->dev, "%s: Malloc Failure topology map\n", __func__);
445 free(fc->crom_src_buf, M_FW);
446 return ENOMEM;
447 }
448 fc->speed_map = (struct fw_speed_map *)malloc(
449 sizeof(struct fw_speed_map),
450 M_FW, M_NOWAIT | M_ZERO);
451 if (fc->speed_map == NULL) {
452 device_printf(fc->dev, "%s: Malloc Failure speed map\n", __func__);
453 free(fc->crom_src_buf, M_FW);
454 free(fc->topology_map, M_FW);
455 return ENOMEM;
456 }
457
458 mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
459 mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
460 CALLOUT_INIT(&fc->timeout_callout);
461 CALLOUT_INIT(&fc->bmr_callout);
462 CALLOUT_INIT(&fc->busprobe_callout);
463 TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, (void *)fc);
464
465 callout_reset(&sc->fc->timeout_callout, hz,
466 (void *)firewire_watchdog, (void *)sc->fc);
467
468 /* create thread */
469 kproc_create(fw_bus_probe_thread, (void *)fc, &fc->probe_thread,
470 0, 0, "fw%d_probe", unit);
471
472 /* Locate our children */
473 bus_generic_probe(dev);
474
475 /* launch attachement of the added children */
476 bus_generic_attach(dev);
477
478 /* bus_reset */
479 FW_GLOCK(fc);
480 fw_busreset(fc, FWBUSNOTREADY);
481 FW_GUNLOCK(fc);
482 fc->ibr(fc);
483
484 return 0;
485 }
486
487 /*
488 * Attach it as child.
489 */
490 static device_t
firewire_add_child(device_t dev,u_int order,const char * name,int unit)491 firewire_add_child(device_t dev, u_int order, const char *name, int unit)
492 {
493 device_t child;
494 struct firewire_softc *sc;
495
496 sc = (struct firewire_softc *)device_get_softc(dev);
497 child = device_add_child(dev, name, unit);
498 if (child) {
499 device_set_ivars(child, sc->fc);
500 device_probe_and_attach(child);
501 }
502
503 return child;
504 }
505
506 static int
firewire_resume(device_t dev)507 firewire_resume(device_t dev)
508 {
509 struct firewire_softc *sc;
510
511 sc = (struct firewire_softc *)device_get_softc(dev);
512 sc->fc->status = FWBUSNOTREADY;
513
514 bus_generic_resume(dev);
515
516 return(0);
517 }
518
519 /*
520 * Dettach it.
521 */
522 static int
firewire_detach(device_t dev)523 firewire_detach(device_t dev)
524 {
525 struct firewire_softc *sc;
526 struct firewire_comm *fc;
527 struct fw_device *fwdev, *fwdev_next;
528 int err;
529
530 sc = (struct firewire_softc *)device_get_softc(dev);
531 fc = sc->fc;
532 mtx_lock(&fc->wait_lock);
533 fc->status = FWBUSDETACH;
534 wakeup(fc);
535 if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
536 printf("firewire probe thread didn't die\n");
537 mtx_unlock(&fc->wait_lock);
538
539 if (fc->arq !=0 && fc->arq->maxq > 0)
540 fw_drain_txq(fc);
541
542 if ((err = fwdev_destroydev(sc)) != 0)
543 return err;
544
545 if ((err = bus_generic_detach(dev)) != 0)
546 return err;
547
548 callout_stop(&fc->timeout_callout);
549 callout_stop(&fc->bmr_callout);
550 callout_stop(&fc->busprobe_callout);
551
552 /* XXX xfer_free and untimeout on all xfers */
553 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
554 fwdev = fwdev_next) {
555 fwdev_next = STAILQ_NEXT(fwdev, link);
556 free(fwdev, M_FW);
557 }
558 free(fc->topology_map, M_FW);
559 free(fc->speed_map, M_FW);
560 free(fc->crom_src_buf, M_FW);
561
562 mtx_destroy(&fc->tlabel_lock);
563 mtx_destroy(&fc->wait_lock);
564 return(0);
565 }
566 #if 0
567 static int
568 firewire_shutdown( device_t dev )
569 {
570 return 0;
571 }
572 #endif
573
574
575 static void
fw_xferq_drain(struct fw_xferq * xferq)576 fw_xferq_drain(struct fw_xferq *xferq)
577 {
578 struct fw_xfer *xfer;
579
580 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
581 STAILQ_REMOVE_HEAD(&xferq->q, link);
582 #if 0
583 xferq->queued --;
584 #endif
585 xfer->resp = EAGAIN;
586 xfer->flag = FWXF_SENTERR;
587 fw_xfer_done(xfer);
588 }
589 }
590
591 void
fw_drain_txq(struct firewire_comm * fc)592 fw_drain_txq(struct firewire_comm *fc)
593 {
594 struct fw_xfer *xfer, *txfer;
595 STAILQ_HEAD(, fw_xfer) xfer_drain;
596 int i;
597
598 STAILQ_INIT(&xfer_drain);
599
600 FW_GLOCK(fc);
601 fw_xferq_drain(fc->atq);
602 fw_xferq_drain(fc->ats);
603 for(i = 0; i < fc->nisodma; i++)
604 fw_xferq_drain(fc->it[i]);
605 FW_GUNLOCK(fc);
606
607 mtx_lock(&fc->tlabel_lock);
608 for (i = 0; i < 0x40; i ++)
609 while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
610 if (firewire_debug)
611 printf("tl=%d flag=%d\n", i, xfer->flag);
612 xfer->tl = -1;
613 xfer->resp = EAGAIN;
614 STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
615 STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
616 }
617 mtx_unlock(&fc->tlabel_lock);
618
619 STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
620 xfer->hand(xfer);
621 }
622
623 static void
fw_reset_csr(struct firewire_comm * fc)624 fw_reset_csr(struct firewire_comm *fc)
625 {
626 int i;
627
628 CSRARC(fc, STATE_CLEAR)
629 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
630 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
631 CSRARC(fc, NODE_IDS) = 0x3f;
632
633 CSRARC(fc, TOPO_MAP + 8) = 0;
634 fc->irm = -1;
635
636 fc->max_node = -1;
637
638 for(i = 2; i < 0x100/4 - 2 ; i++){
639 CSRARC(fc, SPED_MAP + i * 4) = 0;
640 }
641 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
642 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
643 CSRARC(fc, RESET_START) = 0;
644 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
645 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
646 CSRARC(fc, CYCLE_TIME) = 0x0;
647 CSRARC(fc, BUS_TIME) = 0x0;
648 CSRARC(fc, BUS_MGR_ID) = 0x3f;
649 CSRARC(fc, BANDWIDTH_AV) = 4915;
650 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
651 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
652 CSRARC(fc, IP_CHANNELS) = (1U << 31);
653
654 CSRARC(fc, CONF_ROM) = 0x04 << 24;
655 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
656 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
657 1 << 28 | 0xff << 16 | 0x09 << 8;
658 CSRARC(fc, CONF_ROM + 0xc) = 0;
659
660 /* DV depend CSRs see blue book */
661 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
662 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
663
664 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
665 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
666 }
667
668 static void
fw_init_crom(struct firewire_comm * fc)669 fw_init_crom(struct firewire_comm *fc)
670 {
671 struct crom_src *src;
672
673 src = &fc->crom_src_buf->src;
674 bzero(src, sizeof(struct crom_src));
675
676 /* BUS info sample */
677 src->hdr.info_len = 4;
678
679 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
680
681 src->businfo.irmc = 1;
682 src->businfo.cmc = 1;
683 src->businfo.isc = 1;
684 src->businfo.bmc = 1;
685 src->businfo.pmc = 0;
686 src->businfo.cyc_clk_acc = 100;
687 src->businfo.max_rec = fc->maxrec;
688 src->businfo.max_rom = MAXROM_4;
689 #define FW_GENERATION_CHANGEABLE 2
690 src->businfo.generation = FW_GENERATION_CHANGEABLE;
691 src->businfo.link_spd = fc->speed;
692
693 src->businfo.eui64.hi = fc->eui.hi;
694 src->businfo.eui64.lo = fc->eui.lo;
695
696 STAILQ_INIT(&src->chunk_list);
697
698 fc->crom_src = src;
699 fc->crom_root = &fc->crom_src_buf->root;
700 }
701
702 static void
fw_reset_crom(struct firewire_comm * fc)703 fw_reset_crom(struct firewire_comm *fc)
704 {
705 struct crom_src_buf *buf;
706 struct crom_src *src;
707 struct crom_chunk *root;
708
709 buf = fc->crom_src_buf;
710 src = fc->crom_src;
711 root = fc->crom_root;
712
713 STAILQ_INIT(&src->chunk_list);
714
715 bzero(root, sizeof(struct crom_chunk));
716 crom_add_chunk(src, NULL, root, 0);
717 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
718 /* private company_id */
719 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
720 #ifdef __DragonFly__
721 crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
722 crom_add_entry(root, CSRKEY_HW, __DragonFly_cc_version);
723 #else
724 crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
725 crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
726 #endif
727 mtx_lock(&prison0.pr_mtx);
728 crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
729 mtx_unlock(&prison0.pr_mtx);
730 }
731
732 /*
733 * Called after bus reset.
734 */
735 void
fw_busreset(struct firewire_comm * fc,uint32_t new_status)736 fw_busreset(struct firewire_comm *fc, uint32_t new_status)
737 {
738 struct firewire_dev_comm *fdc;
739 struct crom_src *src;
740 device_t *devlistp;
741 uint32_t *newrom;
742 int i, devcnt;
743
744 FW_GLOCK_ASSERT(fc);
745 if (fc->status == FWBUSMGRELECT)
746 callout_stop(&fc->bmr_callout);
747
748 fc->status = new_status;
749 fw_reset_csr(fc);
750
751 if (fc->status == FWBUSNOTREADY)
752 fw_init_crom(fc);
753
754 fw_reset_crom(fc);
755
756 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
757 for( i = 0 ; i < devcnt ; i++)
758 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
759 fdc = device_get_softc(devlistp[i]);
760 if (fdc->post_busreset != NULL)
761 fdc->post_busreset(fdc);
762 }
763 free(devlistp, M_TEMP);
764 }
765
766 src = &fc->crom_src_buf->src;
767 /*
768 * If the old config rom needs to be overwritten,
769 * bump the businfo.generation indicator to
770 * indicate that we need to be reprobed
771 * See 1394a-2000 8.3.2.5.4 for more details.
772 * generation starts at 2 and rolls over at 0xF
773 * back to 2.
774 *
775 * A generation of 0 indicates a device
776 * that is not 1394a-2000 compliant.
777 * A generation of 1 indicates a device that
778 * does not change it's Bus Info Block or
779 * Configuration ROM.
780 */
781 #define FW_MAX_GENERATION 0xF
782 newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
783 src = &fc->crom_src_buf->src;
784 crom_load(src, newrom, CROMSIZE);
785 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
786 if ( src->businfo.generation++ > FW_MAX_GENERATION )
787 src->businfo.generation = FW_GENERATION_CHANGEABLE;
788 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
789 }
790 free(newrom, M_FW);
791
792 }
793
794 /* Call once after reboot */
fw_init(struct firewire_comm * fc)795 void fw_init(struct firewire_comm *fc)
796 {
797 int i;
798 #ifdef FW_VMACCESS
799 struct fw_xfer *xfer;
800 struct fw_bind *fwb;
801 #endif
802
803 fc->arq->queued = 0;
804 fc->ars->queued = 0;
805 fc->atq->queued = 0;
806 fc->ats->queued = 0;
807
808 fc->arq->buf = NULL;
809 fc->ars->buf = NULL;
810 fc->atq->buf = NULL;
811 fc->ats->buf = NULL;
812
813 fc->arq->flag = 0;
814 fc->ars->flag = 0;
815 fc->atq->flag = 0;
816 fc->ats->flag = 0;
817
818 STAILQ_INIT(&fc->atq->q);
819 STAILQ_INIT(&fc->ats->q);
820
821 for( i = 0 ; i < fc->nisodma ; i ++ ){
822 fc->it[i]->queued = 0;
823 fc->ir[i]->queued = 0;
824
825 fc->it[i]->start = NULL;
826 fc->ir[i]->start = NULL;
827
828 fc->it[i]->buf = NULL;
829 fc->ir[i]->buf = NULL;
830
831 fc->it[i]->flag = FWXFERQ_STREAM;
832 fc->ir[i]->flag = FWXFERQ_STREAM;
833
834 STAILQ_INIT(&fc->it[i]->q);
835 STAILQ_INIT(&fc->ir[i]->q);
836 }
837
838 fc->arq->maxq = FWMAXQUEUE;
839 fc->ars->maxq = FWMAXQUEUE;
840 fc->atq->maxq = FWMAXQUEUE;
841 fc->ats->maxq = FWMAXQUEUE;
842
843 for( i = 0 ; i < fc->nisodma ; i++){
844 fc->ir[i]->maxq = FWMAXQUEUE;
845 fc->it[i]->maxq = FWMAXQUEUE;
846 }
847
848 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
849 CSRARC(fc, TOPO_MAP + 4) = 1;
850 CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
851 CSRARC(fc, SPED_MAP + 4) = 1;
852
853 STAILQ_INIT(&fc->devices);
854
855 /* Initialize Async handlers */
856 STAILQ_INIT(&fc->binds);
857 for( i = 0 ; i < 0x40 ; i++){
858 STAILQ_INIT(&fc->tlabels[i]);
859 }
860
861 /* DV depend CSRs see blue book */
862 #if 0
863 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
864 CSRARC(fc, oPCR) = 0x8000007a;
865 for(i = 4 ; i < 0x7c/4 ; i+=4){
866 CSRARC(fc, i + oPCR) = 0x8000007a;
867 }
868
869 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
870 CSRARC(fc, iPCR) = 0x803f0000;
871 for(i = 4 ; i < 0x7c/4 ; i+=4){
872 CSRARC(fc, i + iPCR) = 0x0;
873 }
874 #endif
875
876 fc->crom_src_buf = NULL;
877
878 #ifdef FW_VMACCESS
879 xfer = fw_xfer_alloc();
880 if(xfer == NULL) return;
881
882 fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
883 if(fwb == NULL){
884 fw_xfer_free(xfer);
885 return;
886 }
887 xfer->hand = fw_vmaccess;
888 xfer->fc = fc;
889 xfer->sc = NULL;
890
891 fwb->start_hi = 0x2;
892 fwb->start_lo = 0;
893 fwb->addrlen = 0xffffffff;
894 fwb->xfer = xfer;
895 fw_bindadd(fc, fwb);
896 #endif
897 }
898
899 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
900 ((fwb)->end < (addr))?1:0)
901
902 /*
903 * To lookup bound process from IEEE1394 address.
904 */
905 struct fw_bind *
fw_bindlookup(struct firewire_comm * fc,uint16_t dest_hi,uint32_t dest_lo)906 fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
907 {
908 u_int64_t addr;
909 struct fw_bind *tfw, *r = NULL;
910
911 addr = ((u_int64_t)dest_hi << 32) | dest_lo;
912 FW_GLOCK(fc);
913 STAILQ_FOREACH(tfw, &fc->binds, fclist)
914 if (BIND_CMP(addr, tfw) == 0) {
915 r = tfw;
916 break;
917 }
918 FW_GUNLOCK(fc);
919 return(r);
920 }
921
922 /*
923 * To bind IEEE1394 address block to process.
924 */
925 int
fw_bindadd(struct firewire_comm * fc,struct fw_bind * fwb)926 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
927 {
928 struct fw_bind *tfw, *prev = NULL;
929 int r = 0;
930
931 if (fwb->start > fwb->end) {
932 printf("%s: invalid range\n", __func__);
933 return EINVAL;
934 }
935
936 FW_GLOCK(fc);
937 STAILQ_FOREACH(tfw, &fc->binds, fclist) {
938 if (fwb->end < tfw->start)
939 break;
940 prev = tfw;
941 }
942 if (prev == NULL)
943 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
944 else if (prev->end < fwb->start)
945 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
946 else {
947 printf("%s: bind failed\n", __func__);
948 r = EBUSY;
949 }
950 FW_GUNLOCK(fc);
951 return (r);
952 }
953
954 /*
955 * To free IEEE1394 address block.
956 */
957 int
fw_bindremove(struct firewire_comm * fc,struct fw_bind * fwb)958 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
959 {
960 #if 0
961 struct fw_xfer *xfer, *next;
962 #endif
963 struct fw_bind *tfw;
964 int s;
965
966 s = splfw();
967 FW_GLOCK(fc);
968 STAILQ_FOREACH(tfw, &fc->binds, fclist)
969 if (tfw == fwb) {
970 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
971 goto found;
972 }
973
974 printf("%s: no such binding\n", __func__);
975 FW_GUNLOCK(fc);
976 splx(s);
977 return (1);
978 found:
979 #if 0
980 /* shall we do this? */
981 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
982 next = STAILQ_NEXT(xfer, link);
983 fw_xfer_free(xfer);
984 }
985 STAILQ_INIT(&fwb->xferlist);
986 #endif
987 FW_GUNLOCK(fc);
988
989 splx(s);
990 return 0;
991 }
992
993 int
fw_xferlist_add(struct fw_xferlist * q,struct malloc_type * type,int slen,int rlen,int n,struct firewire_comm * fc,void * sc,void (* hand)(struct fw_xfer *))994 fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
995 int slen, int rlen, int n,
996 struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
997 {
998 int i, s;
999 struct fw_xfer *xfer;
1000
1001 for (i = 0; i < n; i++) {
1002 xfer = fw_xfer_alloc_buf(type, slen, rlen);
1003 if (xfer == NULL)
1004 return (n);
1005 xfer->fc = fc;
1006 xfer->sc = sc;
1007 xfer->hand = hand;
1008 s = splfw();
1009 STAILQ_INSERT_TAIL(q, xfer, link);
1010 splx(s);
1011 }
1012 return (n);
1013 }
1014
1015 void
fw_xferlist_remove(struct fw_xferlist * q)1016 fw_xferlist_remove(struct fw_xferlist *q)
1017 {
1018 struct fw_xfer *xfer, *next;
1019
1020 for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
1021 next = STAILQ_NEXT(xfer, link);
1022 fw_xfer_free_buf(xfer);
1023 }
1024 STAILQ_INIT(q);
1025 }
1026 /*
1027 * dump packet header
1028 */
1029 static void
fw_dump_hdr(struct fw_pkt * fp,char * prefix)1030 fw_dump_hdr(struct fw_pkt *fp, char *prefix)
1031 {
1032 printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
1033 "src=0x%03x\n", prefix,
1034 fp->mode.hdr.dst & 0x3f,
1035 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
1036 fp->mode.hdr.tcode, fp->mode.hdr.pri,
1037 fp->mode.hdr.src);
1038 }
1039
1040 /*
1041 * To free transaction label.
1042 */
1043 static void
fw_tl_free(struct firewire_comm * fc,struct fw_xfer * xfer)1044 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
1045 {
1046 struct fw_xfer *txfer;
1047 int s;
1048
1049 s = splfw();
1050 mtx_lock(&fc->tlabel_lock);
1051 if (xfer->tl < 0) {
1052 mtx_unlock(&fc->tlabel_lock);
1053 return;
1054 }
1055 #if 1 /* make sure the label is allocated */
1056 STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
1057 if(txfer == xfer)
1058 break;
1059 if (txfer == NULL) {
1060 printf("%s: the xfer is not in the queue "
1061 "(tlabel=%d, flag=0x%x)\n",
1062 __FUNCTION__, xfer->tl, xfer->flag);
1063 fw_dump_hdr(&xfer->send.hdr, "send");
1064 fw_dump_hdr(&xfer->recv.hdr, "recv");
1065 kdb_backtrace();
1066 mtx_unlock(&fc->tlabel_lock);
1067 splx(s);
1068 return;
1069 }
1070 #endif
1071
1072 STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
1073 xfer->tl = -1;
1074 mtx_unlock(&fc->tlabel_lock);
1075 splx(s);
1076 return;
1077 }
1078
1079 /*
1080 * To obtain XFER structure by transaction label.
1081 */
1082 static struct fw_xfer *
fw_tl2xfer(struct firewire_comm * fc,int node,int tlabel,int tcode)1083 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
1084 {
1085 struct fw_xfer *xfer;
1086 int s = splfw();
1087 int req;
1088
1089 mtx_lock(&fc->tlabel_lock);
1090 STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel)
1091 if(xfer->send.hdr.mode.hdr.dst == node) {
1092 mtx_unlock(&fc->tlabel_lock);
1093 splx(s);
1094 KASSERT(xfer->tl == tlabel,
1095 ("xfer->tl 0x%x != 0x%x", xfer->tl, tlabel));
1096 /* extra sanity check */
1097 req = xfer->send.hdr.mode.hdr.tcode;
1098 if (xfer->fc->tcode[req].valid_res != tcode) {
1099 printf("%s: invalid response tcode "
1100 "(0x%x for 0x%x)\n", __FUNCTION__,
1101 tcode, req);
1102 return(NULL);
1103 }
1104
1105 if (firewire_debug > 2)
1106 printf("fw_tl2xfer: found tl=%d\n", tlabel);
1107 return(xfer);
1108 }
1109 mtx_unlock(&fc->tlabel_lock);
1110 if (firewire_debug > 1)
1111 printf("fw_tl2xfer: not found tl=%d\n", tlabel);
1112 splx(s);
1113 return(NULL);
1114 }
1115
1116 /*
1117 * To allocate IEEE1394 XFER structure.
1118 */
1119 struct fw_xfer *
fw_xfer_alloc(struct malloc_type * type)1120 fw_xfer_alloc(struct malloc_type *type)
1121 {
1122 struct fw_xfer *xfer;
1123
1124 xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
1125 if (xfer == NULL)
1126 return xfer;
1127
1128 xfer->malloc = type;
1129
1130 return xfer;
1131 }
1132
1133 struct fw_xfer *
fw_xfer_alloc_buf(struct malloc_type * type,int send_len,int recv_len)1134 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
1135 {
1136 struct fw_xfer *xfer;
1137
1138 xfer = fw_xfer_alloc(type);
1139 if (xfer == NULL)
1140 return(NULL);
1141 xfer->send.pay_len = send_len;
1142 xfer->recv.pay_len = recv_len;
1143 if (send_len > 0) {
1144 xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
1145 if (xfer->send.payload == NULL) {
1146 fw_xfer_free(xfer);
1147 return(NULL);
1148 }
1149 }
1150 if (recv_len > 0) {
1151 xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
1152 if (xfer->recv.payload == NULL) {
1153 if (xfer->send.payload != NULL)
1154 free(xfer->send.payload, type);
1155 fw_xfer_free(xfer);
1156 return(NULL);
1157 }
1158 }
1159 return(xfer);
1160 }
1161
1162 /*
1163 * IEEE1394 XFER post process.
1164 */
1165 void
fw_xfer_done(struct fw_xfer * xfer)1166 fw_xfer_done(struct fw_xfer *xfer)
1167 {
1168 if (xfer->hand == NULL) {
1169 printf("hand == NULL\n");
1170 return;
1171 }
1172
1173 if (xfer->fc == NULL)
1174 panic("fw_xfer_done: why xfer->fc is NULL?");
1175
1176 fw_tl_free(xfer->fc, xfer);
1177 xfer->hand(xfer);
1178 }
1179
1180 void
fw_xfer_unload(struct fw_xfer * xfer)1181 fw_xfer_unload(struct fw_xfer* xfer)
1182 {
1183 int s;
1184
1185 if(xfer == NULL ) return;
1186 if(xfer->flag & FWXF_INQ){
1187 printf("fw_xfer_free FWXF_INQ\n");
1188 s = splfw();
1189 FW_GLOCK(xfer->fc);
1190 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1191 #if 0
1192 xfer->q->queued --;
1193 #endif
1194 FW_GUNLOCK(xfer->fc);
1195 splx(s);
1196 }
1197 if (xfer->fc != NULL) {
1198 /*
1199 * Ensure that any tlabel owner can't access this
1200 * xfer after it's freed.
1201 */
1202 fw_tl_free(xfer->fc, xfer);
1203 #if 1
1204 if(xfer->flag & FWXF_START)
1205 /*
1206 * This could happen if:
1207 * 1. We call fwohci_arcv() before fwohci_txd().
1208 * 2. firewire_watch() is called.
1209 */
1210 printf("fw_xfer_free FWXF_START\n");
1211 #endif
1212 }
1213 xfer->flag = FWXF_INIT;
1214 xfer->resp = 0;
1215 }
1216 /*
1217 * To free IEEE1394 XFER structure.
1218 */
1219 void
fw_xfer_free_buf(struct fw_xfer * xfer)1220 fw_xfer_free_buf( struct fw_xfer* xfer)
1221 {
1222 if (xfer == NULL) {
1223 printf("%s: xfer == NULL\n", __func__);
1224 return;
1225 }
1226 fw_xfer_unload(xfer);
1227 if(xfer->send.payload != NULL){
1228 free(xfer->send.payload, xfer->malloc);
1229 }
1230 if(xfer->recv.payload != NULL){
1231 free(xfer->recv.payload, xfer->malloc);
1232 }
1233 free(xfer, xfer->malloc);
1234 }
1235
1236 void
fw_xfer_free(struct fw_xfer * xfer)1237 fw_xfer_free( struct fw_xfer* xfer)
1238 {
1239 if (xfer == NULL) {
1240 printf("%s: xfer == NULL\n", __func__);
1241 return;
1242 }
1243 fw_xfer_unload(xfer);
1244 free(xfer, xfer->malloc);
1245 }
1246
1247 void
fw_asy_callback_free(struct fw_xfer * xfer)1248 fw_asy_callback_free(struct fw_xfer *xfer)
1249 {
1250 #if 0
1251 printf("asyreq done flag=0x%02x resp=%d\n",
1252 xfer->flag, xfer->resp);
1253 #endif
1254 fw_xfer_free(xfer);
1255 }
1256
1257 /*
1258 * To configure PHY.
1259 */
1260 static void
fw_phy_config(struct firewire_comm * fc,int root_node,int gap_count)1261 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1262 {
1263 struct fw_xfer *xfer;
1264 struct fw_pkt *fp;
1265
1266 fc->status = FWBUSPHYCONF;
1267
1268 xfer = fw_xfer_alloc(M_FWXFER);
1269 if (xfer == NULL)
1270 return;
1271 xfer->fc = fc;
1272 xfer->hand = fw_asy_callback_free;
1273
1274 fp = &xfer->send.hdr;
1275 fp->mode.ld[1] = 0;
1276 if (root_node >= 0)
1277 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1278 if (gap_count >= 0)
1279 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1280 fp->mode.ld[2] = ~fp->mode.ld[1];
1281 /* XXX Dangerous, how to pass PHY packet to device driver */
1282 fp->mode.common.tcode |= FWTCODE_PHY;
1283
1284 if (firewire_debug)
1285 device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
1286 __func__, root_node, gap_count);
1287 fw_asyreq(fc, -1, xfer);
1288 }
1289
1290 /*
1291 * Dump self ID.
1292 */
1293 static void
fw_print_sid(uint32_t sid)1294 fw_print_sid(uint32_t sid)
1295 {
1296 union fw_self_id *s;
1297 s = (union fw_self_id *) &sid;
1298 if ( s->p0.sequel ) {
1299 if ( s->p1.sequence_num == FW_SELF_ID_PAGE0 ) {
1300 printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
1301 "p8:%d p9:%d p10:%d\n",
1302 s->p1.phy_id, s->p1.port3, s->p1.port4,
1303 s->p1.port5, s->p1.port6, s->p1.port7,
1304 s->p1.port8, s->p1.port9, s->p1.port10);
1305 } else if (s->p2.sequence_num == FW_SELF_ID_PAGE1 ){
1306 printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
1307 s->p2.phy_id, s->p2.port11, s->p2.port12,
1308 s->p2.port13, s->p2.port14, s->p2.port15);
1309 } else {
1310 printf("node:%d Unknown Self ID Page number %d\n",
1311 s->p1.phy_id, s->p1.sequence_num);
1312 }
1313 } else {
1314 printf("node:%d link:%d gap:%d spd:%d con:%d pwr:%d"
1315 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1316 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1317 s->p0.phy_speed, s->p0.contender,
1318 s->p0.power_class, s->p0.port0, s->p0.port1,
1319 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1320 }
1321 }
1322
1323 /*
1324 * To receive self ID.
1325 */
fw_sidrcv(struct firewire_comm * fc,uint32_t * sid,u_int len)1326 void fw_sidrcv(struct firewire_comm* fc, uint32_t *sid, u_int len)
1327 {
1328 uint32_t *p;
1329 union fw_self_id *self_id;
1330 u_int i, j, node, c_port = 0, i_branch = 0;
1331
1332 fc->sid_cnt = len /(sizeof(uint32_t) * 2);
1333 fc->max_node = fc->nodeid & 0x3f;
1334 CSRARC(fc, NODE_IDS) = ((uint32_t)fc->nodeid) << 16;
1335 fc->status = FWBUSCYMELECT;
1336 fc->topology_map->crc_len = 2;
1337 fc->topology_map->generation ++;
1338 fc->topology_map->self_id_count = 0;
1339 fc->topology_map->node_count = 0;
1340 fc->speed_map->generation ++;
1341 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1342 self_id = &fc->topology_map->self_id[0];
1343 for(i = 0; i < fc->sid_cnt; i ++){
1344 if (sid[1] != ~sid[0]) {
1345 device_printf(fc->bdev, "%s: ERROR invalid self-id packet\n",
1346 __func__);
1347 sid += 2;
1348 continue;
1349 }
1350 *self_id = *((union fw_self_id *)sid);
1351 fc->topology_map->crc_len++;
1352 if(self_id->p0.sequel == 0){
1353 fc->topology_map->node_count ++;
1354 c_port = 0;
1355 if (firewire_debug)
1356 fw_print_sid(sid[0]);
1357 node = self_id->p0.phy_id;
1358 if(fc->max_node < node){
1359 fc->max_node = self_id->p0.phy_id;
1360 }
1361 /* XXX I'm not sure this is the right speed_map */
1362 fc->speed_map->speed[node][node]
1363 = self_id->p0.phy_speed;
1364 for (j = 0; j < node; j ++) {
1365 fc->speed_map->speed[j][node]
1366 = fc->speed_map->speed[node][j]
1367 = min(fc->speed_map->speed[j][j],
1368 self_id->p0.phy_speed);
1369 }
1370 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1371 (self_id->p0.link_active && self_id->p0.contender)) {
1372 fc->irm = self_id->p0.phy_id;
1373 }
1374 if(self_id->p0.port0 >= 0x2){
1375 c_port++;
1376 }
1377 if(self_id->p0.port1 >= 0x2){
1378 c_port++;
1379 }
1380 if(self_id->p0.port2 >= 0x2){
1381 c_port++;
1382 }
1383 }
1384 if(c_port > 2){
1385 i_branch += (c_port - 2);
1386 }
1387 sid += 2;
1388 self_id++;
1389 fc->topology_map->self_id_count ++;
1390 }
1391 /* CRC */
1392 fc->topology_map->crc = fw_crc16(
1393 (uint32_t *)&fc->topology_map->generation,
1394 fc->topology_map->crc_len * 4);
1395 fc->speed_map->crc = fw_crc16(
1396 (uint32_t *)&fc->speed_map->generation,
1397 fc->speed_map->crc_len * 4);
1398 /* byteswap and copy to CSR */
1399 p = (uint32_t *)fc->topology_map;
1400 for (i = 0; i <= fc->topology_map->crc_len; i++)
1401 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1402 p = (uint32_t *)fc->speed_map;
1403 CSRARC(fc, SPED_MAP) = htonl(*p++);
1404 CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1405 /* don't byte-swap uint8_t array */
1406 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1407
1408 fc->max_hop = fc->max_node - i_branch;
1409 device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
1410 fc->max_node + 1, fc->max_hop,
1411 (fc->irm == -1) ? "Not IRM capable" : "cable IRM",
1412 fc->irm,
1413 (fc->irm == fc->nodeid) ? " (me) " : "");
1414
1415 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1416 if (fc->irm == fc->nodeid) {
1417 fc->status = FWBUSMGRDONE;
1418 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1419 fw_bmr(fc);
1420 } else {
1421 fc->status = FWBUSMGRELECT;
1422 callout_reset(&fc->bmr_callout, hz/8,
1423 (void *)fw_try_bmr, (void *)fc);
1424 }
1425 } else
1426 fc->status = FWBUSMGRDONE;
1427
1428 callout_reset(&fc->busprobe_callout, hz/4,
1429 (void *)fw_bus_probe, (void *)fc);
1430 }
1431
1432 /*
1433 * To probe devices on the IEEE1394 bus.
1434 */
1435 static void
fw_bus_probe(struct firewire_comm * fc)1436 fw_bus_probe(struct firewire_comm *fc)
1437 {
1438 int s;
1439 struct fw_device *fwdev;
1440
1441 s = splfw();
1442 fc->status = FWBUSEXPLORE;
1443
1444 /* Invalidate all devices, just after bus reset. */
1445 if (firewire_debug)
1446 device_printf(fc->bdev, "%s:"
1447 "iterate and invalidate all nodes\n",
1448 __func__);
1449 STAILQ_FOREACH(fwdev, &fc->devices, link)
1450 if (fwdev->status != FWDEVINVAL) {
1451 fwdev->status = FWDEVINVAL;
1452 fwdev->rcnt = 0;
1453 if (firewire_debug)
1454 device_printf(fc->bdev, "%s:"
1455 "Invalidate Dev ID: %08x%08x\n",
1456 __func__, fwdev->eui.hi, fwdev->eui.lo);
1457 } else {
1458 if (firewire_debug)
1459 device_printf(fc->bdev, "%s:"
1460 "Dev ID: %08x%08x already invalid\n",
1461 __func__, fwdev->eui.hi, fwdev->eui.lo);
1462 }
1463 splx(s);
1464
1465 wakeup((void *)fc);
1466 }
1467
1468 static int
fw_explore_read_quads(struct fw_device * fwdev,int offset,uint32_t * quad,int length)1469 fw_explore_read_quads(struct fw_device *fwdev, int offset,
1470 uint32_t *quad, int length)
1471 {
1472 struct fw_xfer *xfer;
1473 uint32_t tmp;
1474 int i, error;
1475
1476 for (i = 0; i < length; i ++, offset += sizeof(uint32_t)) {
1477 xfer = fwmem_read_quad(fwdev, NULL, -1,
1478 0xffff, 0xf0000000 | offset, (void *)&tmp,
1479 fw_xferwake);
1480 if (xfer == NULL)
1481 return (-1);
1482 fw_xferwait(xfer);
1483
1484 if (xfer->resp == 0)
1485 quad[i] = ntohl(tmp);
1486
1487 error = xfer->resp;
1488 fw_xfer_free(xfer);
1489 if (error)
1490 return (error);
1491 }
1492 return (0);
1493 }
1494
1495
1496 static int
fw_explore_csrblock(struct fw_device * fwdev,int offset,int recur)1497 fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
1498 {
1499 int err, i, off;
1500 struct csrdirectory *dir;
1501 struct csrreg *reg;
1502
1503 dir = (struct csrdirectory *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1504 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1505 (uint32_t *)dir, 1);
1506 if (err)
1507 return (-1);
1508
1509 offset += sizeof(uint32_t);
1510 reg = (struct csrreg *)&fwdev->csrrom[offset/sizeof(uint32_t)];
1511 err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
1512 (uint32_t *)reg, dir->crc_len);
1513 if (err)
1514 return (-1);
1515
1516 /* XXX check CRC */
1517
1518 off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
1519 if (fwdev->rommax < off)
1520 fwdev->rommax = off;
1521
1522 if (recur == 0)
1523 return (0);
1524
1525 for (i = 0; i < dir->crc_len; i ++, offset += sizeof(uint32_t)) {
1526 if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
1527 recur = 1;
1528 else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
1529 recur = 0;
1530 else
1531 continue;
1532
1533 off = offset + reg[i].val * sizeof(uint32_t);
1534 if (off > CROMSIZE) {
1535 printf("%s: invalid offset %d\n", __FUNCTION__, off);
1536 return(-1);
1537 }
1538 err = fw_explore_csrblock(fwdev, off, recur);
1539 if (err)
1540 return (-1);
1541 }
1542 return (0);
1543 }
1544
1545 static int
fw_explore_node(struct fw_device * dfwdev)1546 fw_explore_node(struct fw_device *dfwdev)
1547 {
1548 struct firewire_comm *fc;
1549 struct fw_device *fwdev, *pfwdev, *tfwdev;
1550 uint32_t *csr;
1551 struct csrhdr *hdr;
1552 struct bus_info *binfo;
1553 int err, node;
1554 uint32_t speed_test = 0;
1555
1556 fc = dfwdev->fc;
1557 csr = dfwdev->csrrom;
1558 node = dfwdev->dst;
1559
1560 /* First quad */
1561 err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
1562 if (err) {
1563 device_printf(fc->bdev, "%s: node%d: explore_read_quads failure\n",
1564 __func__, node);
1565 dfwdev->status = FWDEVINVAL;
1566 return (-1);
1567 }
1568 hdr = (struct csrhdr *)&csr[0];
1569 if (hdr->info_len != 4) {
1570 if (firewire_debug)
1571 device_printf(fc->bdev, "%s: node%d: wrong bus info len(%d)\n",
1572 __func__, node, hdr->info_len);
1573 dfwdev->status = FWDEVINVAL;
1574 return (-1);
1575 }
1576
1577 /* bus info */
1578 err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
1579 if (err) {
1580 device_printf(fc->bdev, "%s: node%d: error reading 0x04\n",
1581 __func__, node);
1582 dfwdev->status = FWDEVINVAL;
1583 return (-1);
1584 }
1585 binfo = (struct bus_info *)&csr[1];
1586 if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
1587 device_printf(fc->bdev, "%s: node%d: invalid bus name 0x%08x\n",
1588 __func__, node, binfo->bus_name);
1589 dfwdev->status = FWDEVINVAL;
1590 return (-1);
1591 }
1592
1593 if (firewire_debug)
1594 device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
1595 "irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
1596 "cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
1597 "generation(%d) link_spd(%d)\n",
1598 __func__, node,
1599 binfo->irmc, binfo->cmc, binfo->isc,
1600 binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
1601 binfo->max_rec, binfo->max_rom,
1602 binfo->generation, binfo->link_spd);
1603
1604 STAILQ_FOREACH(fwdev, &fc->devices, link)
1605 if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
1606 break;
1607 if (fwdev == NULL) {
1608 /* new device */
1609 fwdev = malloc(sizeof(struct fw_device), M_FW,
1610 M_NOWAIT | M_ZERO);
1611 if (fwdev == NULL) {
1612 device_printf(fc->bdev, "%s: node%d: no memory\n",
1613 __func__, node);
1614 return (-1);
1615 }
1616 fwdev->fc = fc;
1617 fwdev->eui = binfo->eui64;
1618 fwdev->dst = dfwdev->dst;
1619 fwdev->maxrec = dfwdev->maxrec;
1620 fwdev->status = dfwdev->status;
1621
1622 /*
1623 * Pre-1394a-2000 didn't have link_spd in
1624 * the Bus Info block, so try and use the
1625 * speed map value.
1626 * 1394a-2000 compliant devices only use
1627 * the Bus Info Block link spd value, so
1628 * ignore the speed map alltogether. SWB
1629 */
1630 if ( binfo->link_spd == FWSPD_S100 /* 0 */) {
1631 device_printf(fc->bdev, "%s: "
1632 "Pre 1394a-2000 detected\n",
1633 __func__);
1634 fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
1635 } else
1636 fwdev->speed = binfo->link_spd;
1637 /*
1638 * Test this speed with a read to the CSRROM.
1639 * If it fails, slow down the speed and retry.
1640 */
1641 while (fwdev->speed > FWSPD_S100 /* 0 */) {
1642 err = fw_explore_read_quads(fwdev, CSRROMOFF,
1643 &speed_test, 1);
1644 if (err) {
1645 device_printf(fc->bdev, "%s: fwdev->speed(%s)"
1646 " decremented due to negotiation\n",
1647 __func__,
1648 linkspeed[fwdev->speed]);
1649 fwdev->speed--;
1650 } else
1651 break;
1652
1653 }
1654
1655 /*
1656 * If the fwdev is not found in the
1657 * fc->devices TAILQ, then we will add it.
1658 */
1659 pfwdev = NULL;
1660 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1661 if (tfwdev->eui.hi > fwdev->eui.hi ||
1662 (tfwdev->eui.hi == fwdev->eui.hi &&
1663 tfwdev->eui.lo > fwdev->eui.lo))
1664 break;
1665 pfwdev = tfwdev;
1666 }
1667 if (pfwdev == NULL)
1668 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1669 else
1670 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1671
1672 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1673 linkspeed[fwdev->speed],
1674 fwdev->eui.hi, fwdev->eui.lo);
1675 } else {
1676 fwdev->dst = node;
1677 fwdev->status = FWDEVINIT;
1678 /* unchanged ? */
1679 if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5) == 0) {
1680 if (firewire_debug)
1681 device_printf(fc->dev, "node%d: crom unchanged\n", node);
1682 return (0);
1683 }
1684 }
1685
1686 bzero(&fwdev->csrrom[0], CROMSIZE);
1687
1688 /* copy first quad and bus info block */
1689 bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * 5);
1690 fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
1691
1692 err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
1693
1694 if (err) {
1695 if (firewire_debug)
1696 device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
1697 __func__, err);
1698 fwdev->status = FWDEVINVAL;
1699 fwdev->csrrom[0] = 0;
1700 }
1701 return (err);
1702
1703 }
1704
1705 /*
1706 * Find the self_id packet for a node, ignoring sequels.
1707 */
1708 static union fw_self_id *
fw_find_self_id(struct firewire_comm * fc,int node)1709 fw_find_self_id(struct firewire_comm *fc, int node)
1710 {
1711 uint32_t i;
1712 union fw_self_id *s;
1713
1714 for (i = 0; i < fc->topology_map->self_id_count; i++) {
1715 s = &fc->topology_map->self_id[i];
1716 if (s->p0.sequel)
1717 continue;
1718 if (s->p0.phy_id == node)
1719 return s;
1720 }
1721 return 0;
1722 }
1723
1724 static void
fw_explore(struct firewire_comm * fc)1725 fw_explore(struct firewire_comm *fc)
1726 {
1727 int node, err, s, i, todo, todo2, trys;
1728 char nodes[63];
1729 struct fw_device dfwdev;
1730 union fw_self_id *fwsid;
1731
1732 todo = 0;
1733 /* setup dummy fwdev */
1734 dfwdev.fc = fc;
1735 dfwdev.speed = 0;
1736 dfwdev.maxrec = 8; /* 512 */
1737 dfwdev.status = FWDEVINIT;
1738
1739 for (node = 0; node <= fc->max_node; node ++) {
1740 /* We don't probe myself and linkdown nodes */
1741 if (node == fc->nodeid) {
1742 if (firewire_debug)
1743 device_printf(fc->bdev, "%s:"
1744 "found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
1745 __func__, node, fc->nodeid, fc->max_node);
1746 continue;
1747 } else if (firewire_debug) {
1748 device_printf(fc->bdev, "%s:"
1749 "node(%d) fc->max_node(%d) found\n",
1750 __func__, node, fc->max_node);
1751 }
1752 fwsid = fw_find_self_id(fc, node);
1753 if (!fwsid || !fwsid->p0.link_active) {
1754 if (firewire_debug)
1755 device_printf(fc->bdev, "%s: node%d: link down\n",
1756 __func__, node);
1757 continue;
1758 }
1759 nodes[todo++] = node;
1760 }
1761
1762 s = splfw();
1763 for (trys = 0; todo > 0 && trys < 3; trys ++) {
1764 todo2 = 0;
1765 for (i = 0; i < todo; i ++) {
1766 dfwdev.dst = nodes[i];
1767 err = fw_explore_node(&dfwdev);
1768 if (err)
1769 nodes[todo2++] = nodes[i];
1770 if (firewire_debug)
1771 device_printf(fc->bdev, "%s: node %d, err = %d\n",
1772 __func__, node, err);
1773 }
1774 todo = todo2;
1775 }
1776 splx(s);
1777 }
1778
1779
1780 static void
fw_bus_probe_thread(void * arg)1781 fw_bus_probe_thread(void *arg)
1782 {
1783 struct firewire_comm *fc;
1784
1785 fc = (struct firewire_comm *)arg;
1786
1787 mtx_lock(&fc->wait_lock);
1788 while (fc->status != FWBUSDETACH) {
1789 if (fc->status == FWBUSEXPLORE) {
1790 mtx_unlock(&fc->wait_lock);
1791 fw_explore(fc);
1792 fc->status = FWBUSEXPDONE;
1793 if (firewire_debug)
1794 printf("bus_explore done\n");
1795 fw_attach_dev(fc);
1796 mtx_lock(&fc->wait_lock);
1797 }
1798 msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
1799 }
1800 mtx_unlock(&fc->wait_lock);
1801 kproc_exit(0);
1802 }
1803
1804 /*
1805 * To attach sub-devices layer onto IEEE1394 bus.
1806 */
1807 static void
fw_attach_dev(struct firewire_comm * fc)1808 fw_attach_dev(struct firewire_comm *fc)
1809 {
1810 struct fw_device *fwdev, *next;
1811 int i, err;
1812 device_t *devlistp;
1813 int devcnt;
1814 struct firewire_dev_comm *fdc;
1815
1816 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1817 next = STAILQ_NEXT(fwdev, link);
1818 if (fwdev->status == FWDEVINIT) {
1819 fwdev->status = FWDEVATTACHED;
1820 } else if (fwdev->status == FWDEVINVAL) {
1821 fwdev->rcnt ++;
1822 if (firewire_debug)
1823 device_printf(fc->bdev, "%s:"
1824 "fwdev->rcnt(%d), hold_count(%d)\n",
1825 __func__, fwdev->rcnt, hold_count);
1826 if (fwdev->rcnt > hold_count) {
1827 /*
1828 * Remove devices which have not been seen
1829 * for a while.
1830 */
1831 device_printf(fc->bdev, "%s:"
1832 "Removing missing device ID:%08x%08x\n",
1833 __func__, fwdev->eui.hi, fwdev->eui.lo);
1834 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1835 link);
1836 free(fwdev, M_FW);
1837 }
1838 }
1839 }
1840
1841 err = device_get_children(fc->bdev, &devlistp, &devcnt);
1842 if( err == 0 ) {
1843 for( i = 0 ; i < devcnt ; i++){
1844 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
1845 fdc = device_get_softc(devlistp[i]);
1846 if (fdc->post_explore != NULL)
1847 fdc->post_explore(fdc);
1848 }
1849 }
1850 free(devlistp, M_TEMP);
1851 }
1852
1853 return;
1854 }
1855
1856 /*
1857 * To allocate unique transaction label.
1858 */
1859 static int
fw_get_tlabel(struct firewire_comm * fc,struct fw_xfer * xfer)1860 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1861 {
1862 u_int dst, new_tlabel;
1863 struct fw_xfer *txfer;
1864 int s;
1865
1866 dst = xfer->send.hdr.mode.hdr.dst & 0x3f;
1867 s = splfw();
1868 mtx_lock(&fc->tlabel_lock);
1869 new_tlabel = (fc->last_tlabel[dst] + 1) & 0x3f;
1870 STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
1871 if ((txfer->send.hdr.mode.hdr.dst & 0x3f) == dst)
1872 break;
1873 if(txfer == NULL) {
1874 fc->last_tlabel[dst] = new_tlabel;
1875 STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
1876 mtx_unlock(&fc->tlabel_lock);
1877 splx(s);
1878 xfer->tl = new_tlabel;
1879 xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
1880 if (firewire_debug > 1)
1881 printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
1882 return (new_tlabel);
1883 }
1884 mtx_unlock(&fc->tlabel_lock);
1885 splx(s);
1886
1887 if (firewire_debug > 1)
1888 printf("fw_get_tlabel: no free tlabel\n");
1889 return (-1);
1890 }
1891
1892 static void
fw_rcv_copy(struct fw_rcv_buf * rb)1893 fw_rcv_copy(struct fw_rcv_buf *rb)
1894 {
1895 struct fw_pkt *pkt;
1896 u_char *p;
1897 struct tcode_info *tinfo;
1898 u_int res, i, len, plen;
1899
1900 rb->xfer->recv.spd = rb->spd;
1901
1902 pkt = (struct fw_pkt *)rb->vec->iov_base;
1903 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1904
1905 /* Copy header */
1906 p = (u_char *)&rb->xfer->recv.hdr;
1907 bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1908 rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
1909 rb->vec->iov_len -= tinfo->hdr_len;
1910
1911 /* Copy payload */
1912 p = (u_char *)rb->xfer->recv.payload;
1913 res = rb->xfer->recv.pay_len;
1914
1915 /* special handling for RRESQ */
1916 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1917 p != NULL && res >= sizeof(uint32_t)) {
1918 *(uint32_t *)p = pkt->mode.rresq.data;
1919 rb->xfer->recv.pay_len = sizeof(uint32_t);
1920 return;
1921 }
1922
1923 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1924 return;
1925
1926 plen = pkt->mode.rresb.len;
1927
1928 for (i = 0; i < rb->nvec; i++, rb->vec++) {
1929 len = MIN(rb->vec->iov_len, plen);
1930 if (res < len) {
1931 device_printf(rb->fc->bdev, "%s:"
1932 " rcv buffer(%d) is %d bytes short.\n",
1933 __func__, rb->xfer->recv.pay_len, len - res);
1934 len = res;
1935 }
1936 bcopy(rb->vec->iov_base, p, len);
1937 p += len;
1938 res -= len;
1939 plen -= len;
1940 if (res == 0 || plen == 0)
1941 break;
1942 }
1943 rb->xfer->recv.pay_len -= res;
1944
1945 }
1946
1947 /*
1948 * Generic packet receiving process.
1949 */
1950 void
fw_rcv(struct fw_rcv_buf * rb)1951 fw_rcv(struct fw_rcv_buf *rb)
1952 {
1953 struct fw_pkt *fp, *resfp;
1954 struct fw_bind *bind;
1955 int tcode;
1956 int i, len, oldstate;
1957 #if 0
1958 {
1959 uint32_t *qld;
1960 int i;
1961 qld = (uint32_t *)buf;
1962 printf("spd %d len:%d\n", spd, len);
1963 for( i = 0 ; i <= len && i < 32; i+= 4){
1964 printf("0x%08x ", ntohl(qld[i/4]));
1965 if((i % 16) == 15) printf("\n");
1966 }
1967 if((i % 16) != 15) printf("\n");
1968 }
1969 #endif
1970 fp = (struct fw_pkt *)rb->vec[0].iov_base;
1971 tcode = fp->mode.common.tcode;
1972 switch (tcode) {
1973 case FWTCODE_WRES:
1974 case FWTCODE_RRESQ:
1975 case FWTCODE_RRESB:
1976 case FWTCODE_LRES:
1977 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1978 fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
1979 if(rb->xfer == NULL) {
1980 device_printf(rb->fc->bdev, "%s: "
1981 "unknown response "
1982 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1983 __func__,
1984 tcode_str[tcode], tcode,
1985 fp->mode.hdr.src,
1986 fp->mode.hdr.tlrt >> 2,
1987 fp->mode.hdr.tlrt & 3,
1988 fp->mode.rresq.data);
1989 #if 0
1990 printf("try ad-hoc work around!!\n");
1991 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1992 (fp->mode.hdr.tlrt >> 2)^3);
1993 if (rb->xfer == NULL) {
1994 printf("no use...\n");
1995 return;
1996 }
1997 #else
1998 return;
1999 #endif
2000 }
2001 fw_rcv_copy(rb);
2002 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
2003 rb->xfer->resp = EIO;
2004 else
2005 rb->xfer->resp = 0;
2006 /* make sure the packet is drained in AT queue */
2007 oldstate = rb->xfer->flag;
2008 rb->xfer->flag = FWXF_RCVD;
2009 switch (oldstate) {
2010 case FWXF_SENT:
2011 fw_xfer_done(rb->xfer);
2012 break;
2013 case FWXF_START:
2014 #if 0
2015 if (firewire_debug)
2016 printf("not sent yet tl=%x\n", rb->xfer->tl);
2017 #endif
2018 break;
2019 default:
2020 device_printf(rb->fc->bdev, "%s: "
2021 "unexpected flag 0x%02x\n", __func__, rb->xfer->flag);
2022 }
2023 return;
2024 case FWTCODE_WREQQ:
2025 case FWTCODE_WREQB:
2026 case FWTCODE_RREQQ:
2027 case FWTCODE_RREQB:
2028 case FWTCODE_LREQ:
2029 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
2030 fp->mode.rreqq.dest_lo);
2031 if(bind == NULL){
2032 device_printf(rb->fc->bdev, "%s: "
2033 "Unknown service addr 0x%04x:0x%08x %s(%x)"
2034 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2035 " src=0x%x data=%lx\n",
2036 #else
2037 " src=0x%x data=%x\n",
2038 #endif
2039 __func__,
2040 fp->mode.wreqq.dest_hi,
2041 fp->mode.wreqq.dest_lo,
2042 tcode_str[tcode], tcode,
2043 fp->mode.hdr.src,
2044 ntohl(fp->mode.wreqq.data));
2045
2046 if (rb->fc->status == FWBUSINIT) {
2047 device_printf(rb->fc->bdev, "%s: cannot respond(bus reset)!\n",
2048 __func__);
2049 return;
2050 }
2051 rb->xfer = fw_xfer_alloc(M_FWXFER);
2052 if(rb->xfer == NULL){
2053 return;
2054 }
2055 rb->xfer->send.spd = rb->spd;
2056 rb->xfer->send.pay_len = 0;
2057 resfp = &rb->xfer->send.hdr;
2058 switch (tcode) {
2059 case FWTCODE_WREQQ:
2060 case FWTCODE_WREQB:
2061 resfp->mode.hdr.tcode = FWTCODE_WRES;
2062 break;
2063 case FWTCODE_RREQQ:
2064 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
2065 break;
2066 case FWTCODE_RREQB:
2067 resfp->mode.hdr.tcode = FWTCODE_RRESB;
2068 break;
2069 case FWTCODE_LREQ:
2070 resfp->mode.hdr.tcode = FWTCODE_LRES;
2071 break;
2072 }
2073 resfp->mode.hdr.dst = fp->mode.hdr.src;
2074 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
2075 resfp->mode.hdr.pri = fp->mode.hdr.pri;
2076 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
2077 resfp->mode.rresb.extcode = 0;
2078 resfp->mode.rresb.len = 0;
2079 /*
2080 rb->xfer->hand = fw_xferwake;
2081 */
2082 rb->xfer->hand = fw_xfer_free;
2083 if(fw_asyreq(rb->fc, -1, rb->xfer)){
2084 fw_xfer_free(rb->xfer);
2085 return;
2086 }
2087 return;
2088 }
2089 len = 0;
2090 for (i = 0; i < rb->nvec; i ++)
2091 len += rb->vec[i].iov_len;
2092 rb->xfer = STAILQ_FIRST(&bind->xferlist);
2093 if (rb->xfer == NULL) {
2094 device_printf(rb->fc->bdev, "%s: "
2095 "Discard a packet for this bind.\n",
2096 __func__);
2097 return;
2098 }
2099 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
2100 fw_rcv_copy(rb);
2101 rb->xfer->hand(rb->xfer);
2102 return;
2103 #if 0 /* shouldn't happen ?? or for GASP */
2104 case FWTCODE_STREAM:
2105 {
2106 struct fw_xferq *xferq;
2107
2108 xferq = rb->fc->ir[sub];
2109 #if 0
2110 printf("stream rcv dma %d len %d off %d spd %d\n",
2111 sub, len, off, spd);
2112 #endif
2113 if(xferq->queued >= xferq->maxq) {
2114 printf("receive queue is full\n");
2115 return;
2116 }
2117 /* XXX get xfer from xfer queue, we don't need copy for
2118 per packet mode */
2119 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
2120 vec[0].iov_len);
2121 if (rb->xfer == NULL)
2122 return;
2123 fw_rcv_copy(rb)
2124 s = splfw();
2125 xferq->queued++;
2126 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
2127 splx(s);
2128 sc = device_get_softc(rb->fc->bdev);
2129 #if defined(__DragonFly__) || __FreeBSD_version < 500000
2130 if (&xferq->rsel.si_pid != 0)
2131 #else
2132 if (SEL_WAITING(&xferq->rsel))
2133 #endif
2134 selwakeuppri(&xferq->rsel, FWPRI);
2135 if (xferq->flag & FWXFERQ_WAKEUP) {
2136 xferq->flag &= ~FWXFERQ_WAKEUP;
2137 wakeup((caddr_t)xferq);
2138 }
2139 if (xferq->flag & FWXFERQ_HANDLER) {
2140 xferq->hand(xferq);
2141 }
2142 return;
2143 break;
2144 }
2145 #endif
2146 default:
2147 device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
2148 __func__, tcode);
2149 break;
2150 }
2151 }
2152
2153 /*
2154 * Post process for Bus Manager election process.
2155 */
2156 static void
fw_try_bmr_callback(struct fw_xfer * xfer)2157 fw_try_bmr_callback(struct fw_xfer *xfer)
2158 {
2159 struct firewire_comm *fc;
2160 int bmr;
2161
2162 if (xfer == NULL)
2163 return;
2164 fc = xfer->fc;
2165 if (xfer->resp != 0)
2166 goto error;
2167 if (xfer->recv.payload == NULL)
2168 goto error;
2169 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
2170 goto error;
2171
2172 bmr = ntohl(xfer->recv.payload[0]);
2173 if (bmr == 0x3f)
2174 bmr = fc->nodeid;
2175
2176 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
2177 fw_xfer_free_buf(xfer);
2178 fw_bmr(fc);
2179 return;
2180
2181 error:
2182 device_printf(fc->bdev, "bus manager election failed\n");
2183 fw_xfer_free_buf(xfer);
2184 }
2185
2186
2187 /*
2188 * To candidate Bus Manager election process.
2189 */
2190 static void
fw_try_bmr(void * arg)2191 fw_try_bmr(void *arg)
2192 {
2193 struct fw_xfer *xfer;
2194 struct firewire_comm *fc = (struct firewire_comm *)arg;
2195 struct fw_pkt *fp;
2196 int err = 0;
2197
2198 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
2199 if(xfer == NULL){
2200 return;
2201 }
2202 xfer->send.spd = 0;
2203 fc->status = FWBUSMGRELECT;
2204
2205 fp = &xfer->send.hdr;
2206 fp->mode.lreq.dest_hi = 0xffff;
2207 fp->mode.lreq.tlrt = 0;
2208 fp->mode.lreq.tcode = FWTCODE_LREQ;
2209 fp->mode.lreq.pri = 0;
2210 fp->mode.lreq.src = 0;
2211 fp->mode.lreq.len = 8;
2212 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2213 fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2214 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2215 xfer->send.payload[0] = htonl(0x3f);
2216 xfer->send.payload[1] = htonl(fc->nodeid);
2217 xfer->hand = fw_try_bmr_callback;
2218
2219 err = fw_asyreq(fc, -1, xfer);
2220 if(err){
2221 fw_xfer_free_buf(xfer);
2222 return;
2223 }
2224 return;
2225 }
2226
2227 #ifdef FW_VMACCESS
2228 /*
2229 * Software implementation for physical memory block access.
2230 * XXX:Too slow, usef for debug purpose only.
2231 */
2232 static void
fw_vmaccess(struct fw_xfer * xfer)2233 fw_vmaccess(struct fw_xfer *xfer){
2234 struct fw_pkt *rfp, *sfp = NULL;
2235 uint32_t *ld = (uint32_t *)xfer->recv.buf;
2236
2237 printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2238 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2239 printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2240 if(xfer->resp != 0){
2241 fw_xfer_free( xfer);
2242 return;
2243 }
2244 if(xfer->recv.buf == NULL){
2245 fw_xfer_free( xfer);
2246 return;
2247 }
2248 rfp = (struct fw_pkt *)xfer->recv.buf;
2249 switch(rfp->mode.hdr.tcode){
2250 /* XXX need fix for 64bit arch */
2251 case FWTCODE_WREQB:
2252 xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2253 xfer->send.len = 12;
2254 sfp = (struct fw_pkt *)xfer->send.buf;
2255 bcopy(rfp->mode.wreqb.payload,
2256 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2257 sfp->mode.wres.tcode = FWTCODE_WRES;
2258 sfp->mode.wres.rtcode = 0;
2259 break;
2260 case FWTCODE_WREQQ:
2261 xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
2262 xfer->send.len = 12;
2263 sfp->mode.wres.tcode = FWTCODE_WRES;
2264 *((uint32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2265 sfp->mode.wres.rtcode = 0;
2266 break;
2267 case FWTCODE_RREQB:
2268 xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
2269 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2270 sfp = (struct fw_pkt *)xfer->send.buf;
2271 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2272 sfp->mode.rresb.payload, (uint16_t)ntohs(rfp->mode.rreqb.len));
2273 sfp->mode.rresb.tcode = FWTCODE_RRESB;
2274 sfp->mode.rresb.len = rfp->mode.rreqb.len;
2275 sfp->mode.rresb.rtcode = 0;
2276 sfp->mode.rresb.extcode = 0;
2277 break;
2278 case FWTCODE_RREQQ:
2279 xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
2280 xfer->send.len = 16;
2281 sfp = (struct fw_pkt *)xfer->send.buf;
2282 sfp->mode.rresq.data = *(uint32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2283 sfp->mode.wres.tcode = FWTCODE_RRESQ;
2284 sfp->mode.rresb.rtcode = 0;
2285 break;
2286 default:
2287 fw_xfer_free( xfer);
2288 return;
2289 }
2290 sfp->mode.hdr.dst = rfp->mode.hdr.src;
2291 xfer->dst = ntohs(rfp->mode.hdr.src);
2292 xfer->hand = fw_xfer_free;
2293
2294 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2295 sfp->mode.hdr.pri = 0;
2296
2297 fw_asyreq(xfer->fc, -1, xfer);
2298 /**/
2299 return;
2300 }
2301 #endif
2302
2303 /*
2304 * CRC16 check-sum for IEEE1394 register blocks.
2305 */
2306 uint16_t
fw_crc16(uint32_t * ptr,uint32_t len)2307 fw_crc16(uint32_t *ptr, uint32_t len){
2308 uint32_t i, sum, crc = 0;
2309 int shift;
2310 len = (len + 3) & ~3;
2311 for(i = 0 ; i < len ; i+= 4){
2312 for( shift = 28 ; shift >= 0 ; shift -= 4){
2313 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2314 crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2315 }
2316 crc &= 0xffff;
2317 }
2318 return((uint16_t) crc);
2319 }
2320
2321 /*
2322 * Find the root node, if it is not
2323 * Cycle Master Capable, then we should
2324 * override this and become the Cycle
2325 * Master
2326 */
2327 static int
fw_bmr(struct firewire_comm * fc)2328 fw_bmr(struct firewire_comm *fc)
2329 {
2330 struct fw_device fwdev;
2331 union fw_self_id *self_id;
2332 int cmstr;
2333 uint32_t quad;
2334
2335 /* Check to see if the current root node is cycle master capable */
2336 self_id = fw_find_self_id(fc, fc->max_node);
2337 if (fc->max_node > 0) {
2338 /* XXX check cmc bit of businfo block rather than contender */
2339 if (self_id->p0.link_active && self_id->p0.contender)
2340 cmstr = fc->max_node;
2341 else {
2342 device_printf(fc->bdev,
2343 "root node is not cycle master capable\n");
2344 /* XXX shall we be the cycle master? */
2345 cmstr = fc->nodeid;
2346 /* XXX need bus reset */
2347 }
2348 } else
2349 cmstr = -1;
2350
2351 device_printf(fc->bdev, "bus manager %d %s\n",
2352 CSRARC(fc, BUS_MGR_ID),
2353 (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
2354 if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2355 /* We are not the bus manager */
2356 return(0);
2357 }
2358
2359 /* Optimize gapcount */
2360 if(fc->max_hop <= MAX_GAPHOP )
2361 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2362 /* If we are the cycle master, nothing to do */
2363 if (cmstr == fc->nodeid || cmstr == -1)
2364 return 0;
2365 /* Bus probe has not finished, make dummy fwdev for cmstr */
2366 bzero(&fwdev, sizeof(fwdev));
2367 fwdev.fc = fc;
2368 fwdev.dst = cmstr;
2369 fwdev.speed = 0;
2370 fwdev.maxrec = 8; /* 512 */
2371 fwdev.status = FWDEVINIT;
2372 /* Set cmstr bit on the cycle master */
2373 quad = htonl(1 << 8);
2374 fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2375 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2376
2377 return 0;
2378 }
2379
2380 int
fw_open_isodma(struct firewire_comm * fc,int tx)2381 fw_open_isodma(struct firewire_comm *fc, int tx)
2382 {
2383 struct fw_xferq **xferqa;
2384 struct fw_xferq *xferq;
2385 int i;
2386
2387 if (tx)
2388 xferqa = &fc->it[0];
2389 else
2390 xferqa = &fc->ir[0];
2391
2392 FW_GLOCK(fc);
2393 for (i = 0; i < fc->nisodma; i ++) {
2394 xferq = xferqa[i];
2395 if ((xferq->flag & FWXFERQ_OPEN) == 0) {
2396 xferq->flag |= FWXFERQ_OPEN;
2397 break;
2398 }
2399 }
2400 if (i == fc->nisodma) {
2401 printf("no free dma channel (tx=%d)\n", tx);
2402 i = -1;
2403 }
2404 FW_GUNLOCK(fc);
2405 return (i);
2406 }
2407
2408 static int
fw_modevent(module_t mode,int type,void * data)2409 fw_modevent(module_t mode, int type, void *data)
2410 {
2411 int err = 0;
2412 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2413 static eventhandler_tag fwdev_ehtag = NULL;
2414 #endif
2415
2416 switch (type) {
2417 case MOD_LOAD:
2418 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2419 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2420 fwdev_clone, 0, 1000);
2421 #endif
2422 break;
2423 case MOD_UNLOAD:
2424 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2425 if (fwdev_ehtag != NULL)
2426 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2427 #endif
2428 break;
2429 case MOD_SHUTDOWN:
2430 break;
2431 default:
2432 return (EOPNOTSUPP);
2433 }
2434 return (err);
2435 }
2436
2437
2438 #ifdef __DragonFly__
2439 DECLARE_DUMMY_MODULE(firewire);
2440 #endif
2441 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,0);
2442 MODULE_VERSION(firewire, 1);
2443