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 * $FreeBSD: src/sys/dev/firewire/firewire.c,v 1.68 2004/01/08 14:58:09 simokawa Exp $
35 */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/types.h>
40
41 #include <sys/kernel.h>
42 #include <sys/malloc.h>
43 #include <sys/conf.h>
44 #include <sys/bus.h> /* used by smbus and newbus */
45 #include <sys/sysctl.h>
46 #include <sys/thread2.h>
47
48 #include <bus/firewire/firewire.h>
49 #include <bus/firewire/firewirereg.h>
50 #include <bus/firewire/fwmem.h>
51 #include <bus/firewire/iec13213.h>
52 #include <bus/firewire/iec68113.h>
53
54 struct crom_src_buf {
55 struct crom_src src;
56 struct crom_chunk root;
57 struct crom_chunk vendor;
58 struct crom_chunk hw;
59 };
60
61 int firewire_debug=0, try_bmr=1, hold_count=3;
62 SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
63 "FireWire driver debug flag");
64 SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
65 SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
66 "Try to be a bus manager");
67 SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
68 "Number of count of bus resets for removing lost device information");
69
70 MALLOC_DEFINE(M_FW, "firewire", "FireWire");
71 MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
72
73 #define FW_MAXASYRTY 4
74
75 devclass_t firewire_devclass;
76
77 static int firewire_probe (device_t);
78 static int firewire_attach (device_t);
79 static int firewire_detach (device_t);
80 static int firewire_resume (device_t);
81 #if 0
82 static int firewire_shutdown (device_t);
83 #endif
84 static device_t firewire_add_child (device_t, device_t, int, const char *, int);
85 static void fw_try_bmr (void *);
86 static void fw_try_bmr_callback (struct fw_xfer *);
87 static void fw_asystart (struct fw_xfer *);
88 static int fw_get_tlabel (struct firewire_comm *, struct fw_xfer *);
89 static void fw_bus_probe (struct firewire_comm *);
90 static void fw_bus_explore (struct firewire_comm *);
91 static void fw_bus_explore_callback (struct fw_xfer *);
92 static void fw_attach_dev (struct firewire_comm *);
93 #ifdef FW_VMACCESS
94 static void fw_vmaccess (struct fw_xfer *);
95 #endif
96 struct fw_xfer *asyreqq (struct firewire_comm *, u_int8_t, u_int8_t, u_int8_t,
97 u_int32_t, u_int32_t, void (*)(struct fw_xfer *));
98 static int fw_bmr (struct firewire_comm *);
99
100 /*
101 * note: bus_generic_identify() will automatically install a "firewire"
102 * device under any attached fwohci device.
103 */
104 static device_method_t firewire_methods[] = {
105 /* Device interface */
106 DEVMETHOD(device_identify, bus_generic_identify),
107 DEVMETHOD(device_probe, firewire_probe),
108 DEVMETHOD(device_attach, firewire_attach),
109 DEVMETHOD(device_detach, firewire_detach),
110 DEVMETHOD(device_suspend, bus_generic_suspend),
111 DEVMETHOD(device_resume, firewire_resume),
112 DEVMETHOD(device_shutdown, bus_generic_shutdown),
113
114 /* Bus interface */
115 DEVMETHOD(bus_add_child, firewire_add_child),
116 DEVMETHOD(bus_print_child, bus_generic_print_child),
117
118 DEVMETHOD_END
119 };
120 char *linkspeed[] = {
121 "S100", "S200", "S400", "S800",
122 "S1600", "S3200", "undef", "undef"
123 };
124
125 static char *tcode_str[] = {
126 "WREQQ", "WREQB", "WRES", "undef",
127 "RREQQ", "RREQB", "RRESQ", "RRESB",
128 "CYCS", "LREQ", "STREAM", "LRES",
129 "undef", "undef", "PHY", "undef"
130 };
131
132 /* IEEE-1394a Table C-2 Gap count as a function of hops*/
133 #define MAX_GAPHOP 15
134 u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18,
135 21, 24, 26, 29, 32, 35, 37, 40};
136
137 static driver_t firewire_driver = {
138 "firewire",
139 firewire_methods,
140 sizeof(struct firewire_softc),
141 };
142
143 /*
144 * Lookup fwdev by node id.
145 */
146 struct fw_device *
fw_noderesolve_nodeid(struct firewire_comm * fc,int dst)147 fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
148 {
149 struct fw_device *fwdev;
150
151 crit_enter();
152 STAILQ_FOREACH(fwdev, &fc->devices, link)
153 if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
154 break;
155 crit_exit();
156
157 return fwdev;
158 }
159
160 /*
161 * Lookup fwdev by EUI64.
162 */
163 struct fw_device *
fw_noderesolve_eui64(struct firewire_comm * fc,struct fw_eui64 * eui)164 fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
165 {
166 struct fw_device *fwdev;
167
168 crit_enter();
169 STAILQ_FOREACH(fwdev, &fc->devices, link)
170 if (FW_EUI64_EQUAL(fwdev->eui, *eui))
171 break;
172 crit_exit();
173
174 if(fwdev == NULL) return NULL;
175 if(fwdev->status == FWDEVINVAL) return NULL;
176 return fwdev;
177 }
178
179 /*
180 * Async. request procedure for userland application.
181 */
182 int
fw_asyreq(struct firewire_comm * fc,int sub,struct fw_xfer * xfer)183 fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
184 {
185 int err = 0;
186 struct fw_xferq *xferq;
187 int tl = 0, len;
188 struct fw_pkt *fp;
189 int tcode;
190 struct tcode_info *info;
191
192 if(xfer == NULL) return EINVAL;
193 if(xfer->act.hand == NULL){
194 kprintf("act.hand == NULL\n");
195 return EINVAL;
196 }
197 fp = &xfer->send.hdr;
198
199 tcode = fp->mode.common.tcode & 0xf;
200 info = &fc->tcode[tcode];
201 if (info->flag == 0) {
202 kprintf("invalid tcode=%x\n", tcode);
203 return EINVAL;
204 }
205 if (info->flag & FWTI_REQ)
206 xferq = fc->atq;
207 else
208 xferq = fc->ats;
209 len = info->hdr_len;
210 if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
211 kprintf("send.pay_len > maxrec\n");
212 return EINVAL;
213 }
214 if (info->flag & FWTI_BLOCK_STR)
215 len = fp->mode.stream.len;
216 else if (info->flag & FWTI_BLOCK_ASY)
217 len = fp->mode.rresb.len;
218 else
219 len = 0;
220 if (len != xfer->send.pay_len){
221 kprintf("len(%d) != send.pay_len(%d) %s(%x)\n",
222 len, xfer->send.pay_len, tcode_str[tcode], tcode);
223 return EINVAL;
224 }
225
226 if(xferq->start == NULL){
227 kprintf("xferq->start == NULL\n");
228 return EINVAL;
229 }
230 if(!(xferq->queued < xferq->maxq)){
231 device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
232 xferq->queued);
233 return EINVAL;
234 }
235
236 microtime(&xfer->tv);
237 if (info->flag & FWTI_TLABEL) {
238 if((tl = fw_get_tlabel(fc, xfer)) == -1 )
239 return EIO;
240 fp->mode.hdr.tlrt = tl << 2;
241 }
242
243 xfer->tl = tl;
244 xfer->resp = 0;
245 xfer->fc = fc;
246 xfer->q = xferq;
247 xfer->retry_req = fw_asybusy;
248
249 fw_asystart(xfer);
250 return err;
251 }
252 /*
253 * Wakeup blocked process.
254 */
255 void
fw_asy_callback(struct fw_xfer * xfer)256 fw_asy_callback(struct fw_xfer *xfer){
257 wakeup(xfer);
258 return;
259 }
260 /*
261 * Postpone to later retry.
262 */
263 void
fw_asybusy(struct fw_xfer * xfer)264 fw_asybusy(struct fw_xfer *xfer)
265 {
266 kprintf("fw_asybusy\n");
267 /*
268 xfer->ch = timeout((timeout_t *)fw_asystart, (void *)xfer, 20000);
269 */
270 #if 0
271 DELAY(20000);
272 #endif
273 fw_asystart(xfer);
274 return;
275 }
276
277 /*
278 * Async. request with given xfer structure.
279 */
280 static void
fw_asystart(struct fw_xfer * xfer)281 fw_asystart(struct fw_xfer *xfer)
282 {
283 struct firewire_comm *fc = xfer->fc;
284
285 if(xfer->retry++ >= fc->max_asyretry){
286 device_printf(fc->bdev, "max_asyretry exceeded\n");
287 xfer->resp = EBUSY;
288 xfer->state = FWXF_BUSY;
289 xfer->act.hand(xfer);
290 return;
291 }
292 #if 0 /* XXX allow bus explore packets only after bus rest */
293 if (fc->status < FWBUSEXPLORE) {
294 xfer->resp = EAGAIN;
295 xfer->state = FWXF_BUSY;
296 if (xfer->act.hand != NULL)
297 xfer->act.hand(xfer);
298 return;
299 }
300 #endif
301 crit_enter();
302 xfer->state = FWXF_INQ;
303 STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
304 xfer->q->queued ++;
305 crit_exit();
306 /* XXX just queue for mbuf */
307 if (xfer->mbuf == NULL)
308 xfer->q->start(fc);
309 return;
310 }
311
312 static int
firewire_probe(device_t dev)313 firewire_probe(device_t dev)
314 {
315 device_set_desc(dev, "IEEE1394(FireWire) bus");
316 return (0);
317 }
318
319 static void
firewire_xfer_timeout(struct firewire_comm * fc)320 firewire_xfer_timeout(struct firewire_comm *fc)
321 {
322 struct fw_xfer *xfer;
323 struct tlabel *tl;
324 struct timeval tv;
325 struct timeval split_timeout;
326 int i;
327
328 split_timeout.tv_sec = 0;
329 split_timeout.tv_usec = 200 * 1000; /* 200 msec */
330
331 microtime(&tv);
332 timevalsub(&tv, &split_timeout);
333
334 crit_enter();
335 for (i = 0; i < 0x40; i ++) {
336 while ((tl = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
337 xfer = tl->xfer;
338 if (timevalcmp(&xfer->tv, &tv, >))
339 /* the rests are newer than this */
340 break;
341 if (xfer->state == FWXF_START)
342 /* not sent yet */
343 break;
344 device_printf(fc->bdev,
345 "split transaction timeout dst=0x%x tl=0x%x state=%d\n",
346 xfer->send.hdr.mode.hdr.dst, i, xfer->state);
347 xfer->resp = ETIMEDOUT;
348 STAILQ_REMOVE_HEAD(&fc->tlabels[i], link);
349 fw_xfer_done(xfer);
350 }
351 }
352 crit_exit();
353 }
354
355 #define WATCHDOC_HZ 10
356 static void
firewire_watchdog(void * arg)357 firewire_watchdog(void *arg)
358 {
359 struct firewire_comm *fc;
360 static int watchdoc_clock = 0;
361
362 fc = (struct firewire_comm *)arg;
363
364 /*
365 * At boot stage, the device interrupt is disabled and
366 * We encounter a timeout easily. To avoid this,
367 * ignore clock interrupt for a while.
368 */
369 if (watchdoc_clock > WATCHDOC_HZ * 15) {
370 firewire_xfer_timeout(fc);
371 fc->timeout(fc);
372 } else
373 watchdoc_clock ++;
374
375 callout_reset(&fc->timeout_callout, hz / WATCHDOC_HZ,
376 (void *)firewire_watchdog, (void *)fc);
377 }
378
379 /*
380 * The attach routine.
381 */
382 static int
firewire_attach(device_t dev)383 firewire_attach(device_t dev)
384 {
385 struct firewire_softc *sc = device_get_softc(dev);
386 device_t pa = device_get_parent(dev);
387 struct firewire_comm *fc;
388
389 fc = (struct firewire_comm *)device_get_softc(pa);
390 sc->fc = fc;
391 fc->status = FWBUSNOTREADY;
392
393 if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
394
395 fwdev_makedev(sc);
396
397 CALLOUT_INIT(&sc->fc->timeout_callout);
398 CALLOUT_INIT(&sc->fc->bmr_callout);
399 CALLOUT_INIT(&sc->fc->retry_probe_callout);
400 CALLOUT_INIT(&sc->fc->busprobe_callout);
401
402 callout_reset(&sc->fc->timeout_callout, hz,
403 (void *)firewire_watchdog, (void *)sc->fc);
404
405 /* Locate our children */
406 bus_generic_probe(dev);
407
408 /* launch attachement of the added children */
409 bus_generic_attach(dev);
410
411 /* bus_reset */
412 fw_busreset(fc);
413 fc->ibr(fc);
414
415 return 0;
416 }
417
418 /*
419 * Attach it as child.
420 */
421 static device_t
firewire_add_child(device_t bus,device_t parent,int order,const char * name,int unit)422 firewire_add_child(device_t bus, device_t parent, int order, const char *name, int unit)
423 {
424 device_t child;
425 struct firewire_softc *sc;
426
427 sc = (struct firewire_softc *)device_get_softc(parent);
428 child = device_add_child(parent, name, unit);
429 if (child) {
430 device_set_ivars(child, sc->fc);
431 device_probe_and_attach(child);
432 }
433
434 return child;
435 }
436
437 static int
firewire_resume(device_t dev)438 firewire_resume(device_t dev)
439 {
440 struct firewire_softc *sc;
441
442 sc = (struct firewire_softc *)device_get_softc(dev);
443 sc->fc->status = FWBUSNOTREADY;
444
445 bus_generic_resume(dev);
446
447 return(0);
448 }
449
450 /*
451 * Dettach it.
452 */
453 static int
firewire_detach(device_t dev)454 firewire_detach(device_t dev)
455 {
456 struct firewire_softc *sc;
457 struct csrdir *csrd, *next;
458 struct fw_device *fwdev, *fwdev_next;
459 int err;
460
461 sc = (struct firewire_softc *)device_get_softc(dev);
462 if ((err = fwdev_destroydev(sc)) != 0)
463 return err;
464
465 if ((err = bus_generic_detach(dev)) != 0)
466 return err;
467
468 callout_stop(&sc->fc->timeout_callout);
469 callout_stop(&sc->fc->bmr_callout);
470 callout_stop(&sc->fc->retry_probe_callout);
471 callout_stop(&sc->fc->busprobe_callout);
472
473 /* XXX xfree_free and callout_stop on all xfers */
474 for (fwdev = STAILQ_FIRST(&sc->fc->devices); fwdev != NULL;
475 fwdev = fwdev_next) {
476 fwdev_next = STAILQ_NEXT(fwdev, link);
477 kfree(fwdev, M_FW);
478 }
479 for (csrd = SLIST_FIRST(&sc->fc->csrfree); csrd != NULL; csrd = next) {
480 next = SLIST_NEXT(csrd, link);
481 kfree(csrd, M_FW);
482 }
483 kfree(sc->fc->topology_map, M_FW);
484 kfree(sc->fc->speed_map, M_FW);
485 kfree(sc->fc->crom_src_buf, M_FW);
486 return(0);
487 }
488 #if 0
489 static int
490 firewire_shutdown( device_t dev )
491 {
492 return 0;
493 }
494 #endif
495
496
497 static void
fw_xferq_drain(struct fw_xferq * xferq)498 fw_xferq_drain(struct fw_xferq *xferq)
499 {
500 struct fw_xfer *xfer;
501
502 while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
503 STAILQ_REMOVE_HEAD(&xferq->q, link);
504 xferq->queued --;
505 xfer->resp = EAGAIN;
506 xfer->state = FWXF_SENTERR;
507 fw_xfer_done(xfer);
508 }
509 }
510
511 void
fw_drain_txq(struct firewire_comm * fc)512 fw_drain_txq(struct firewire_comm *fc)
513 {
514 int i;
515
516 fw_xferq_drain(fc->atq);
517 fw_xferq_drain(fc->ats);
518 for(i = 0; i < fc->nisodma; i++)
519 fw_xferq_drain(fc->it[i]);
520 }
521
522 static void
fw_reset_csr(struct firewire_comm * fc)523 fw_reset_csr(struct firewire_comm *fc)
524 {
525 int i;
526
527 CSRARC(fc, STATE_CLEAR)
528 = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
529 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
530 CSRARC(fc, NODE_IDS) = 0x3f;
531
532 CSRARC(fc, TOPO_MAP + 8) = 0;
533 fc->irm = -1;
534
535 fc->max_node = -1;
536
537 for(i = 2; i < 0x100/4 - 2 ; i++){
538 CSRARC(fc, SPED_MAP + i * 4) = 0;
539 }
540 CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
541 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
542 CSRARC(fc, RESET_START) = 0;
543 CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
544 CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
545 CSRARC(fc, CYCLE_TIME) = 0x0;
546 CSRARC(fc, BUS_TIME) = 0x0;
547 CSRARC(fc, BUS_MGR_ID) = 0x3f;
548 CSRARC(fc, BANDWIDTH_AV) = 4915;
549 CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
550 CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
551 CSRARC(fc, IP_CHANNELS) = (1 << 31);
552
553 CSRARC(fc, CONF_ROM) = 0x04 << 24;
554 CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
555 CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
556 1 << 28 | 0xff << 16 | 0x09 << 8;
557 CSRARC(fc, CONF_ROM + 0xc) = 0;
558
559 /* DV depend CSRs see blue book */
560 CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
561 CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
562
563 CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
564 CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
565 }
566
567 static void
fw_init_crom(struct firewire_comm * fc)568 fw_init_crom(struct firewire_comm *fc)
569 {
570 struct crom_src *src;
571
572 fc->crom_src_buf = (struct crom_src_buf *)
573 kmalloc(sizeof(struct crom_src_buf), M_FW, M_WAITOK | M_ZERO);
574
575 src = &fc->crom_src_buf->src;
576 bzero(src, sizeof(struct crom_src));
577
578 /* BUS info sample */
579 src->hdr.info_len = 4;
580
581 src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
582
583 src->businfo.irmc = 1;
584 src->businfo.cmc = 1;
585 src->businfo.isc = 1;
586 src->businfo.bmc = 1;
587 src->businfo.pmc = 0;
588 src->businfo.cyc_clk_acc = 100;
589 src->businfo.max_rec = fc->maxrec;
590 src->businfo.max_rom = MAXROM_4;
591 src->businfo.generation = 1;
592 src->businfo.link_spd = fc->speed;
593
594 src->businfo.eui64.hi = fc->eui.hi;
595 src->businfo.eui64.lo = fc->eui.lo;
596
597 STAILQ_INIT(&src->chunk_list);
598
599 fc->crom_src = src;
600 fc->crom_root = &fc->crom_src_buf->root;
601 }
602
603 static void
fw_reset_crom(struct firewire_comm * fc)604 fw_reset_crom(struct firewire_comm *fc)
605 {
606 struct crom_src_buf *buf;
607 struct crom_src *src;
608 struct crom_chunk *root;
609
610 if (fc->crom_src_buf == NULL)
611 fw_init_crom(fc);
612
613 buf = fc->crom_src_buf;
614 src = fc->crom_src;
615 root = fc->crom_root;
616
617 STAILQ_INIT(&src->chunk_list);
618
619 bzero(root, sizeof(struct crom_chunk));
620 crom_add_chunk(src, NULL, root, 0);
621 crom_add_entry(root, CSRKEY_NCAP, 0x0083c0); /* XXX */
622 /* private company_id */
623 crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
624 crom_add_simple_text(src, root, &buf->vendor, "DragonFly Project");
625 crom_add_entry(root, CSRKEY_HW, __DragonFly_version);
626 crom_add_simple_text(src, root, &buf->hw, hostname);
627 }
628
629 /*
630 * Called after bus reset.
631 */
632 void
fw_busreset(struct firewire_comm * fc)633 fw_busreset(struct firewire_comm *fc)
634 {
635 struct firewire_dev_comm *fdc;
636 struct crom_src *src;
637 device_t *devlistp;
638 void *newrom;
639 int i, devcnt;
640
641 switch(fc->status){
642 case FWBUSMGRELECT:
643 callout_stop(&fc->bmr_callout);
644 break;
645 default:
646 break;
647 }
648 fc->status = FWBUSRESET;
649 fw_reset_csr(fc);
650 fw_reset_crom(fc);
651
652 if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
653 for( i = 0 ; i < devcnt ; i++)
654 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
655 fdc = device_get_softc(devlistp[i]);
656 if (fdc->post_busreset != NULL)
657 fdc->post_busreset(fdc);
658 }
659 kfree(devlistp, M_TEMP);
660 }
661
662 newrom = kmalloc(CROMSIZE, M_FW, M_WAITOK | M_ZERO);
663 src = &fc->crom_src_buf->src;
664 crom_load(src, (u_int32_t *)newrom, CROMSIZE);
665 if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
666 /* bump generation and reload */
667 src->businfo.generation ++;
668 /* generation must be between 0x2 and 0xF */
669 if (src->businfo.generation < 2)
670 src->businfo.generation ++;
671 crom_load(src, (u_int32_t *)newrom, CROMSIZE);
672 bcopy(newrom, (void *)fc->config_rom, CROMSIZE);
673 }
674 kfree(newrom, M_FW);
675 }
676
677 /* Call once after reboot */
678 void
fw_init(struct firewire_comm * fc)679 fw_init(struct firewire_comm *fc)
680 {
681 int i;
682 struct csrdir *csrd;
683 #ifdef FW_VMACCESS
684 struct fw_xfer *xfer;
685 struct fw_bind *fwb;
686 #endif
687
688 fc->max_asyretry = FW_MAXASYRTY;
689
690 fc->arq->queued = 0;
691 fc->ars->queued = 0;
692 fc->atq->queued = 0;
693 fc->ats->queued = 0;
694
695 fc->arq->buf = NULL;
696 fc->ars->buf = NULL;
697 fc->atq->buf = NULL;
698 fc->ats->buf = NULL;
699
700 fc->arq->flag = 0;
701 fc->ars->flag = 0;
702 fc->atq->flag = 0;
703 fc->ats->flag = 0;
704
705 STAILQ_INIT(&fc->atq->q);
706 STAILQ_INIT(&fc->ats->q);
707
708 for( i = 0 ; i < fc->nisodma ; i ++ ){
709 fc->it[i]->queued = 0;
710 fc->ir[i]->queued = 0;
711
712 fc->it[i]->start = NULL;
713 fc->ir[i]->start = NULL;
714
715 fc->it[i]->buf = NULL;
716 fc->ir[i]->buf = NULL;
717
718 fc->it[i]->flag = FWXFERQ_STREAM;
719 fc->ir[i]->flag = FWXFERQ_STREAM;
720
721 STAILQ_INIT(&fc->it[i]->q);
722 STAILQ_INIT(&fc->ir[i]->q);
723
724 STAILQ_INIT(&fc->it[i]->binds);
725 STAILQ_INIT(&fc->ir[i]->binds);
726 }
727
728 fc->arq->maxq = FWMAXQUEUE;
729 fc->ars->maxq = FWMAXQUEUE;
730 fc->atq->maxq = FWMAXQUEUE;
731 fc->ats->maxq = FWMAXQUEUE;
732
733 for( i = 0 ; i < fc->nisodma ; i++){
734 fc->ir[i]->maxq = FWMAXQUEUE;
735 fc->it[i]->maxq = FWMAXQUEUE;
736 }
737 /* Initialize csr registers */
738 fc->topology_map = kmalloc(sizeof(struct fw_topology_map),
739 M_FW, M_WAITOK | M_ZERO);
740 fc->speed_map = kmalloc(sizeof(struct fw_speed_map),
741 M_FW, M_WAITOK | M_ZERO);
742 CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
743 CSRARC(fc, TOPO_MAP + 4) = 1;
744 CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
745 CSRARC(fc, SPED_MAP + 4) = 1;
746
747 STAILQ_INIT(&fc->devices);
748
749 /* Initialize csr ROM work space */
750 SLIST_INIT(&fc->ongocsr);
751 SLIST_INIT(&fc->csrfree);
752 for( i = 0 ; i < FWMAXCSRDIR ; i++){
753 csrd = kmalloc(sizeof(struct csrdir), M_FW, M_WAITOK);
754 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
755 }
756
757 /* Initialize Async handlers */
758 STAILQ_INIT(&fc->binds);
759 for( i = 0 ; i < 0x40 ; i++){
760 STAILQ_INIT(&fc->tlabels[i]);
761 }
762
763 /* DV depend CSRs see blue book */
764 #if 0
765 CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
766 CSRARC(fc, oPCR) = 0x8000007a;
767 for(i = 4 ; i < 0x7c/4 ; i+=4){
768 CSRARC(fc, i + oPCR) = 0x8000007a;
769 }
770
771 CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
772 CSRARC(fc, iPCR) = 0x803f0000;
773 for(i = 4 ; i < 0x7c/4 ; i+=4){
774 CSRARC(fc, i + iPCR) = 0x0;
775 }
776 #endif
777
778 fc->crom_src_buf = NULL;
779
780 #ifdef FW_VMACCESS
781 xfer = fw_xfer_alloc();
782 if(xfer == NULL) return;
783
784 fwb = kmalloc(sizeof (struct fw_bind), M_FW, M_WAITOK);
785 xfer->act.hand = fw_vmaccess;
786 xfer->fc = fc;
787 xfer->sc = NULL;
788
789 fwb->start_hi = 0x2;
790 fwb->start_lo = 0;
791 fwb->addrlen = 0xffffffff;
792 fwb->xfer = xfer;
793 fw_bindadd(fc, fwb);
794 #endif
795 }
796
797 #define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)?-1:\
798 ((fwb)->end < (addr))?1:0)
799
800 /*
801 * To lookup binded process from IEEE1394 address.
802 */
803 struct fw_bind *
fw_bindlookup(struct firewire_comm * fc,u_int16_t dest_hi,u_int32_t dest_lo)804 fw_bindlookup(struct firewire_comm *fc, u_int16_t dest_hi, u_int32_t dest_lo)
805 {
806 u_int64_t addr;
807 struct fw_bind *tfw;
808
809 addr = ((u_int64_t)dest_hi << 32) | dest_lo;
810 STAILQ_FOREACH(tfw, &fc->binds, fclist)
811 if (tfw->act_type != FWACT_NULL && BIND_CMP(addr, tfw) == 0)
812 return(tfw);
813 return(NULL);
814 }
815
816 /*
817 * To bind IEEE1394 address block to process.
818 */
819 int
fw_bindadd(struct firewire_comm * fc,struct fw_bind * fwb)820 fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
821 {
822 struct fw_bind *tfw, *prev = NULL;
823
824 if (fwb->start > fwb->end) {
825 kprintf("%s: invalid range\n", __func__);
826 return EINVAL;
827 }
828
829 STAILQ_FOREACH(tfw, &fc->binds, fclist) {
830 if (fwb->end < tfw->start)
831 break;
832 prev = tfw;
833 }
834 if (prev == NULL) {
835 STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
836 goto out;
837 }
838 if (prev->end < fwb->start) {
839 STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
840 goto out;
841 }
842
843 kprintf("%s: bind failed\n", __func__);
844 return (EBUSY);
845
846 out:
847 if (fwb->act_type == FWACT_CH)
848 STAILQ_INSERT_HEAD(&fc->ir[fwb->sub]->binds, fwb, chlist);
849 return (0);
850 }
851
852 /*
853 * To free IEEE1394 address block.
854 */
855 int
fw_bindremove(struct firewire_comm * fc,struct fw_bind * fwb)856 fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
857 {
858 #if 0
859 struct fw_xfer *xfer, *next;
860 #endif
861 struct fw_bind *tfw;
862
863 crit_enter();
864 STAILQ_FOREACH(tfw, &fc->binds, fclist)
865 if (tfw == fwb) {
866 STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
867 goto found;
868 }
869
870 kprintf("%s: no such bind\n", __func__);
871 crit_exit();
872 return (1);
873 found:
874 #if 0
875 /* shall we do this? */
876 for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
877 next = STAILQ_NEXT(xfer, link);
878 fw_xfer_free(xfer);
879 }
880 STAILQ_INIT(&fwb->xferlist);
881 #endif
882
883 crit_exit();
884 return 0;
885 }
886
887 /*
888 * To free transaction label.
889 */
890 static void
fw_tl_free(struct firewire_comm * fc,struct fw_xfer * xfer)891 fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
892 {
893 struct tlabel *tl;
894
895 crit_enter();
896 for( tl = STAILQ_FIRST(&fc->tlabels[xfer->tl]); tl != NULL;
897 tl = STAILQ_NEXT(tl, link)){
898 if(tl->xfer == xfer){
899 STAILQ_REMOVE(&fc->tlabels[xfer->tl], tl, tlabel, link);
900 kfree(tl, M_FW);
901 break;
902 }
903 }
904 crit_exit();
905 }
906
907 /*
908 * To obtain XFER structure by transaction label.
909 */
910 static struct fw_xfer *
fw_tl2xfer(struct firewire_comm * fc,int node,int tlabel)911 fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
912 {
913 struct fw_xfer *xfer;
914 struct tlabel *tl;
915
916 crit_enter();
917
918 for( tl = STAILQ_FIRST(&fc->tlabels[tlabel]); tl != NULL;
919 tl = STAILQ_NEXT(tl, link)){
920 if(tl->xfer->send.hdr.mode.hdr.dst == node){
921 xfer = tl->xfer;
922 crit_exit();
923 if (firewire_debug > 2)
924 kprintf("fw_tl2xfer: found tl=%d\n", tlabel);
925 return(xfer);
926 }
927 }
928 if (firewire_debug > 1)
929 kprintf("fw_tl2xfer: not found tl=%d\n", tlabel);
930 crit_exit();
931 return(NULL);
932 }
933
934 /*
935 * To allocate IEEE1394 XFER structure.
936 */
937 struct fw_xfer *
fw_xfer_alloc(struct malloc_type * type)938 fw_xfer_alloc(struct malloc_type *type)
939 {
940 struct fw_xfer *xfer;
941
942 xfer = kmalloc(sizeof(struct fw_xfer), type, M_INTWAIT | M_ZERO);
943 xfer->malloc = type;
944
945 return xfer;
946 }
947
948 struct fw_xfer *
fw_xfer_alloc_buf(struct malloc_type * type,int send_len,int recv_len)949 fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
950 {
951 struct fw_xfer *xfer;
952
953 xfer = fw_xfer_alloc(type);
954 if (xfer == NULL)
955 return(NULL);
956 xfer->send.pay_len = send_len;
957 xfer->recv.pay_len = recv_len;
958 if (send_len > 0) {
959 xfer->send.payload = kmalloc(send_len, type, M_INTWAIT | M_ZERO);
960 if (xfer->send.payload == NULL) {
961 fw_xfer_free(xfer);
962 return(NULL);
963 }
964 }
965 if (recv_len > 0) {
966 xfer->recv.payload = kmalloc(recv_len, type, M_INTWAIT);
967 if (xfer->recv.payload == NULL) {
968 if (xfer->send.payload != NULL)
969 kfree(xfer->send.payload, type);
970 fw_xfer_free(xfer);
971 return(NULL);
972 }
973 }
974 return(xfer);
975 }
976
977 /*
978 * IEEE1394 XFER post process.
979 */
980 void
fw_xfer_done(struct fw_xfer * xfer)981 fw_xfer_done(struct fw_xfer *xfer)
982 {
983 if (xfer->act.hand == NULL) {
984 kprintf("act.hand == NULL\n");
985 return;
986 }
987
988 if (xfer->fc == NULL)
989 panic("fw_xfer_done: why xfer->fc is NULL?");
990
991 xfer->act.hand(xfer);
992 }
993
994 void
fw_xfer_unload(struct fw_xfer * xfer)995 fw_xfer_unload(struct fw_xfer* xfer)
996 {
997 if(xfer == NULL ) return;
998 if(xfer->state == FWXF_INQ){
999 kprintf("fw_xfer_free FWXF_INQ\n");
1000 crit_enter();
1001 STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
1002 xfer->q->queued --;
1003 crit_exit();
1004 }
1005 if (xfer->fc != NULL) {
1006 #if 1
1007 if(xfer->state == FWXF_START)
1008 /*
1009 * This could happen if:
1010 * 1. We call fwohci_arcv() before fwohci_txd().
1011 * 2. firewire_watch() is called.
1012 */
1013 kprintf("fw_xfer_free FWXF_START\n");
1014 #endif
1015 fw_tl_free(xfer->fc, xfer);
1016 }
1017 xfer->state = FWXF_INIT;
1018 xfer->resp = 0;
1019 xfer->retry = 0;
1020 }
1021 /*
1022 * To free IEEE1394 XFER structure.
1023 */
1024 void
fw_xfer_free_buf(struct fw_xfer * xfer)1025 fw_xfer_free_buf( struct fw_xfer* xfer)
1026 {
1027 if (xfer == NULL) {
1028 kprintf("%s: xfer == NULL\n", __func__);
1029 return;
1030 }
1031 fw_xfer_unload(xfer);
1032 if(xfer->send.payload != NULL){
1033 kfree(xfer->send.payload, xfer->malloc);
1034 }
1035 if(xfer->recv.payload != NULL){
1036 kfree(xfer->recv.payload, xfer->malloc);
1037 }
1038 kfree(xfer, xfer->malloc);
1039 }
1040
1041 void
fw_xfer_free(struct fw_xfer * xfer)1042 fw_xfer_free( struct fw_xfer* xfer)
1043 {
1044 if (xfer == NULL) {
1045 kprintf("%s: xfer == NULL\n", __func__);
1046 return;
1047 }
1048 fw_xfer_unload(xfer);
1049 kfree(xfer, xfer->malloc);
1050 }
1051
1052 void
fw_asy_callback_free(struct fw_xfer * xfer)1053 fw_asy_callback_free(struct fw_xfer *xfer)
1054 {
1055 #if 0
1056 kprintf("asyreq done state=%d resp=%d\n",
1057 xfer->state, xfer->resp);
1058 #endif
1059 fw_xfer_free(xfer);
1060 }
1061
1062 /*
1063 * To configure PHY.
1064 */
1065 static void
fw_phy_config(struct firewire_comm * fc,int root_node,int gap_count)1066 fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
1067 {
1068 struct fw_xfer *xfer;
1069 struct fw_pkt *fp;
1070
1071 fc->status = FWBUSPHYCONF;
1072
1073 xfer = fw_xfer_alloc(M_FWXFER);
1074 if (xfer == NULL)
1075 return;
1076 xfer->fc = fc;
1077 xfer->retry_req = fw_asybusy;
1078 xfer->act.hand = fw_asy_callback_free;
1079
1080 fp = &xfer->send.hdr;
1081 fp->mode.ld[1] = 0;
1082 if (root_node >= 0)
1083 fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
1084 if (gap_count >= 0)
1085 fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
1086 fp->mode.ld[2] = ~fp->mode.ld[1];
1087 /* XXX Dangerous, how to pass PHY packet to device driver */
1088 fp->mode.common.tcode |= FWTCODE_PHY;
1089
1090 if (firewire_debug)
1091 kprintf("send phy_config root_node=%d gap_count=%d\n",
1092 root_node, gap_count);
1093 fw_asyreq(fc, -1, xfer);
1094 }
1095
1096 #if 0
1097 /*
1098 * Dump self ID.
1099 */
1100 static void
1101 fw_print_sid(u_int32_t sid)
1102 {
1103 union fw_self_id *s;
1104 s = (union fw_self_id *) &sid;
1105 kprintf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
1106 " p0:%d p1:%d p2:%d i:%d m:%d\n",
1107 s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
1108 s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
1109 s->p0.power_class, s->p0.port0, s->p0.port1,
1110 s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
1111 }
1112 #endif
1113
1114 /*
1115 * To receive self ID.
1116 */
1117 void
fw_sidrcv(struct firewire_comm * fc,u_int32_t * sid,u_int len)1118 fw_sidrcv(struct firewire_comm* fc, u_int32_t *sid, u_int len)
1119 {
1120 u_int32_t *p;
1121 union fw_self_id *self_id;
1122 u_int i, j, node, c_port = 0, i_branch = 0;
1123
1124 fc->sid_cnt = len /(sizeof(u_int32_t) * 2);
1125 fc->status = FWBUSINIT;
1126 fc->max_node = fc->nodeid & 0x3f;
1127 CSRARC(fc, NODE_IDS) = ((u_int32_t)fc->nodeid) << 16;
1128 fc->status = FWBUSCYMELECT;
1129 fc->topology_map->crc_len = 2;
1130 fc->topology_map->generation ++;
1131 fc->topology_map->self_id_count = 0;
1132 fc->topology_map->node_count = 0;
1133 fc->speed_map->generation ++;
1134 fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
1135 self_id = &fc->topology_map->self_id[0];
1136 for(i = 0; i < fc->sid_cnt; i ++){
1137 if (sid[1] != ~sid[0]) {
1138 kprintf("fw_sidrcv: invalid self-id packet\n");
1139 sid += 2;
1140 continue;
1141 }
1142 *self_id = *((union fw_self_id *)sid);
1143 fc->topology_map->crc_len++;
1144 if(self_id->p0.sequel == 0){
1145 fc->topology_map->node_count ++;
1146 c_port = 0;
1147 #if 0
1148 fw_print_sid(sid[0]);
1149 #endif
1150 node = self_id->p0.phy_id;
1151 if(fc->max_node < node){
1152 fc->max_node = self_id->p0.phy_id;
1153 }
1154 /* XXX I'm not sure this is the right speed_map */
1155 fc->speed_map->speed[node][node]
1156 = self_id->p0.phy_speed;
1157 for (j = 0; j < node; j ++) {
1158 fc->speed_map->speed[j][node]
1159 = fc->speed_map->speed[node][j]
1160 = min(fc->speed_map->speed[j][j],
1161 self_id->p0.phy_speed);
1162 }
1163 if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
1164 (self_id->p0.link_active && self_id->p0.contender)) {
1165 fc->irm = self_id->p0.phy_id;
1166 }
1167 if(self_id->p0.port0 >= 0x2){
1168 c_port++;
1169 }
1170 if(self_id->p0.port1 >= 0x2){
1171 c_port++;
1172 }
1173 if(self_id->p0.port2 >= 0x2){
1174 c_port++;
1175 }
1176 }
1177 if(c_port > 2){
1178 i_branch += (c_port - 2);
1179 }
1180 sid += 2;
1181 self_id++;
1182 fc->topology_map->self_id_count ++;
1183 }
1184 device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
1185 /* CRC */
1186 fc->topology_map->crc = fw_crc16(
1187 (u_int32_t *)&fc->topology_map->generation,
1188 fc->topology_map->crc_len * 4);
1189 fc->speed_map->crc = fw_crc16(
1190 (u_int32_t *)&fc->speed_map->generation,
1191 fc->speed_map->crc_len * 4);
1192 /* byteswap and copy to CSR */
1193 p = (u_int32_t *)fc->topology_map;
1194 for (i = 0; i <= fc->topology_map->crc_len; i++)
1195 CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
1196 p = (u_int32_t *)fc->speed_map;
1197 CSRARC(fc, SPED_MAP) = htonl(*p++);
1198 CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
1199 /* don't byte-swap u_int8_t array */
1200 bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
1201
1202 fc->max_hop = fc->max_node - i_branch;
1203 kprintf(", maxhop <= %d", fc->max_hop);
1204
1205 if(fc->irm == -1 ){
1206 kprintf(", Not found IRM capable node");
1207 }else{
1208 kprintf(", cable IRM = %d", fc->irm);
1209 if (fc->irm == fc->nodeid)
1210 kprintf(" (me)");
1211 }
1212 kprintf("\n");
1213
1214 if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
1215 if (fc->irm == fc->nodeid) {
1216 fc->status = FWBUSMGRDONE;
1217 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
1218 fw_bmr(fc);
1219 } else {
1220 fc->status = FWBUSMGRELECT;
1221 callout_reset(&fc->bmr_callout, hz/8,
1222 (void *)fw_try_bmr, (void *)fc);
1223 }
1224 } else
1225 fc->status = FWBUSMGRDONE;
1226
1227 callout_reset(&fc->busprobe_callout, hz/4,
1228 (void *)fw_bus_probe, (void *)fc);
1229 }
1230
1231 /*
1232 * To probe devices on the IEEE1394 bus.
1233 */
1234 static void
fw_bus_probe(struct firewire_comm * fc)1235 fw_bus_probe(struct firewire_comm *fc)
1236 {
1237 struct fw_device *fwdev;
1238
1239 crit_enter();
1240 fc->status = FWBUSEXPLORE;
1241 fc->retry_count = 0;
1242
1243 /* Invalidate all devices, just after bus reset. */
1244 STAILQ_FOREACH(fwdev, &fc->devices, link)
1245 if (fwdev->status != FWDEVINVAL) {
1246 fwdev->status = FWDEVINVAL;
1247 fwdev->rcnt = 0;
1248 }
1249
1250 fc->ongonode = 0;
1251 fc->ongoaddr = CSRROMOFF;
1252 fc->ongodev = NULL;
1253 fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1254 fw_bus_explore(fc);
1255 crit_exit();
1256 }
1257
1258 /*
1259 * To collect device informations on the IEEE1394 bus.
1260 */
1261 static void
fw_bus_explore(struct firewire_comm * fc)1262 fw_bus_explore(struct firewire_comm *fc )
1263 {
1264 int err = 0;
1265 struct fw_device *fwdev, *pfwdev, *tfwdev;
1266 u_int32_t addr;
1267 struct fw_xfer *xfer;
1268 struct fw_pkt *fp;
1269
1270 if(fc->status != FWBUSEXPLORE)
1271 return;
1272
1273 loop:
1274 if(fc->ongonode == fc->nodeid) fc->ongonode++;
1275
1276 if(fc->ongonode > fc->max_node) goto done;
1277 if(fc->ongonode >= 0x3f) goto done;
1278
1279 /* check link */
1280 /* XXX we need to check phy_id first */
1281 if (!fc->topology_map->self_id[fc->ongonode].p0.link_active) {
1282 if (firewire_debug)
1283 kprintf("node%d: link down\n", fc->ongonode);
1284 fc->ongonode++;
1285 goto loop;
1286 }
1287
1288 if(fc->ongoaddr <= CSRROMOFF &&
1289 fc->ongoeui.hi == 0xffffffff &&
1290 fc->ongoeui.lo == 0xffffffff ){
1291 fc->ongoaddr = CSRROMOFF;
1292 addr = 0xf0000000 | fc->ongoaddr;
1293 }else if(fc->ongoeui.hi == 0xffffffff ){
1294 fc->ongoaddr = CSRROMOFF + 0xc;
1295 addr = 0xf0000000 | fc->ongoaddr;
1296 }else if(fc->ongoeui.lo == 0xffffffff ){
1297 fc->ongoaddr = CSRROMOFF + 0x10;
1298 addr = 0xf0000000 | fc->ongoaddr;
1299 }else if(fc->ongodev == NULL){
1300 STAILQ_FOREACH(fwdev, &fc->devices, link)
1301 if (FW_EUI64_EQUAL(fwdev->eui, fc->ongoeui))
1302 break;
1303 if(fwdev != NULL){
1304 fwdev->dst = fc->ongonode;
1305 fwdev->status = FWDEVINIT;
1306 fc->ongodev = fwdev;
1307 fc->ongoaddr = CSRROMOFF;
1308 addr = 0xf0000000 | fc->ongoaddr;
1309 goto dorequest;
1310 }
1311 fwdev = kmalloc(sizeof(struct fw_device), M_FW,
1312 M_WAITOK | M_ZERO);
1313 fwdev->fc = fc;
1314 fwdev->rommax = 0;
1315 fwdev->dst = fc->ongonode;
1316 fwdev->eui.hi = fc->ongoeui.hi; fwdev->eui.lo = fc->ongoeui.lo;
1317 fwdev->status = FWDEVINIT;
1318 fwdev->speed = fc->speed_map->speed[fc->nodeid][fc->ongonode];
1319
1320 pfwdev = NULL;
1321 STAILQ_FOREACH(tfwdev, &fc->devices, link) {
1322 if (tfwdev->eui.hi > fwdev->eui.hi ||
1323 (tfwdev->eui.hi == fwdev->eui.hi &&
1324 tfwdev->eui.lo > fwdev->eui.lo))
1325 break;
1326 pfwdev = tfwdev;
1327 }
1328 if (pfwdev == NULL)
1329 STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
1330 else
1331 STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
1332
1333 device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
1334 linkspeed[fwdev->speed],
1335 fc->ongoeui.hi, fc->ongoeui.lo);
1336
1337 fc->ongodev = fwdev;
1338 fc->ongoaddr = CSRROMOFF;
1339 addr = 0xf0000000 | fc->ongoaddr;
1340 }else{
1341 addr = 0xf0000000 | fc->ongoaddr;
1342 }
1343 dorequest:
1344 #if 0
1345 xfer = asyreqq(fc, FWSPD_S100, 0, 0,
1346 ((FWLOCALBUS | fc->ongonode) << 16) | 0xffff , addr,
1347 fw_bus_explore_callback);
1348 if(xfer == NULL) goto done;
1349 #else
1350 xfer = fw_xfer_alloc(M_FWXFER);
1351 if(xfer == NULL){
1352 goto done;
1353 }
1354 xfer->send.spd = 0;
1355 fp = &xfer->send.hdr;
1356 fp->mode.rreqq.dest_hi = 0xffff;
1357 fp->mode.rreqq.tlrt = 0;
1358 fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1359 fp->mode.rreqq.pri = 0;
1360 fp->mode.rreqq.src = 0;
1361 fp->mode.rreqq.dst = FWLOCALBUS | fc->ongonode;
1362 fp->mode.rreqq.dest_lo = addr;
1363 xfer->act.hand = fw_bus_explore_callback;
1364
1365 if (firewire_debug)
1366 kprintf("node%d: explore addr=0x%x\n",
1367 fc->ongonode, fc->ongoaddr);
1368 err = fw_asyreq(fc, -1, xfer);
1369 if(err){
1370 fw_xfer_free( xfer);
1371 return;
1372 }
1373 #endif
1374 return;
1375 done:
1376 /* fw_attach_devs */
1377 fc->status = FWBUSEXPDONE;
1378 if (firewire_debug)
1379 kprintf("bus_explore done\n");
1380 fw_attach_dev(fc);
1381 return;
1382
1383 }
1384
1385 /* Portable Async. request read quad */
1386 struct fw_xfer *
asyreqq(struct firewire_comm * fc,u_int8_t spd,u_int8_t tl,u_int8_t rt,u_int32_t addr_hi,u_int32_t addr_lo,void (* hand)(struct fw_xfer *))1387 asyreqq(struct firewire_comm *fc, u_int8_t spd, u_int8_t tl, u_int8_t rt,
1388 u_int32_t addr_hi, u_int32_t addr_lo,
1389 void (*hand) (struct fw_xfer*))
1390 {
1391 struct fw_xfer *xfer;
1392 struct fw_pkt *fp;
1393 int err;
1394
1395 xfer = fw_xfer_alloc(M_FWXFER);
1396 if (xfer == NULL)
1397 return NULL;
1398
1399 xfer->send.spd = spd; /* XXX:min(spd, fc->spd) */
1400 fp = &xfer->send.hdr;
1401 fp->mode.rreqq.dest_hi = addr_hi & 0xffff;
1402 if(tl & FWP_TL_VALID){
1403 fp->mode.rreqq.tlrt = (tl & 0x3f) << 2;
1404 }else{
1405 fp->mode.rreqq.tlrt = 0;
1406 }
1407 fp->mode.rreqq.tlrt |= rt & 0x3;
1408 fp->mode.rreqq.tcode = FWTCODE_RREQQ;
1409 fp->mode.rreqq.pri = 0;
1410 fp->mode.rreqq.src = 0;
1411 fp->mode.rreqq.dst = addr_hi >> 16;
1412 fp->mode.rreqq.dest_lo = addr_lo;
1413 xfer->act.hand = hand;
1414
1415 err = fw_asyreq(fc, -1, xfer);
1416 if(err){
1417 fw_xfer_free( xfer);
1418 return NULL;
1419 }
1420 return xfer;
1421 }
1422
1423 /*
1424 * Callback for the IEEE1394 bus information collection.
1425 */
1426 static void
fw_bus_explore_callback(struct fw_xfer * xfer)1427 fw_bus_explore_callback(struct fw_xfer *xfer)
1428 {
1429 struct firewire_comm *fc;
1430 struct fw_pkt *sfp,*rfp;
1431 struct csrhdr *chdr;
1432 struct csrdir *csrd;
1433 struct csrreg *csrreg;
1434 u_int32_t offset;
1435
1436
1437 if(xfer == NULL) {
1438 kprintf("xfer == NULL\n");
1439 return;
1440 }
1441 fc = xfer->fc;
1442
1443 if (firewire_debug)
1444 kprintf("node%d: callback addr=0x%x\n",
1445 fc->ongonode, fc->ongoaddr);
1446
1447 if(xfer->resp != 0){
1448 kprintf("node%d: resp=%d addr=0x%x\n",
1449 fc->ongonode, xfer->resp, fc->ongoaddr);
1450 goto errnode;
1451 }
1452
1453 sfp = &xfer->send.hdr;
1454 rfp = &xfer->recv.hdr;
1455 #if 0
1456 {
1457 u_int32_t *qld;
1458 int i;
1459 qld = (u_int32_t *)xfer->recv.buf;
1460 kprintf("len:%d\n", xfer->recv.len);
1461 for( i = 0 ; i <= xfer->recv.len && i < 32; i+= 4){
1462 kprintf("0x%08x ", rfp->mode.ld[i/4]);
1463 if((i % 16) == 15) kprintf("\n");
1464 }
1465 if((i % 16) != 15) kprintf("\n");
1466 }
1467 #endif
1468 if(fc->ongodev == NULL){
1469 if(sfp->mode.rreqq.dest_lo == (0xf0000000 | CSRROMOFF)){
1470 rfp->mode.rresq.data = ntohl(rfp->mode.rresq.data);
1471 chdr = (struct csrhdr *)(void *)(&rfp->mode.rresq.data);
1472 /* If CSR is minimal confinguration, more investgation is not needed. */
1473 if(chdr->info_len == 1){
1474 if (firewire_debug)
1475 kprintf("node%d: minimal config\n",
1476 fc->ongonode);
1477 goto nextnode;
1478 }else{
1479 fc->ongoaddr = CSRROMOFF + 0xc;
1480 }
1481 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0xc))){
1482 fc->ongoeui.hi = ntohl(rfp->mode.rresq.data);
1483 fc->ongoaddr = CSRROMOFF + 0x10;
1484 }else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0x10))){
1485 fc->ongoeui.lo = ntohl(rfp->mode.rresq.data);
1486 if (fc->ongoeui.hi == 0 && fc->ongoeui.lo == 0) {
1487 if (firewire_debug)
1488 kprintf("node%d: eui64 is zero.\n",
1489 fc->ongonode);
1490 goto nextnode;
1491 }
1492 fc->ongoaddr = CSRROMOFF;
1493 }
1494 }else{
1495 if (fc->ongoaddr == CSRROMOFF &&
1496 fc->ongodev->csrrom[0] == ntohl(rfp->mode.rresq.data)) {
1497 fc->ongodev->status = FWDEVATTACHED;
1498 goto nextnode;
1499 }
1500 fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4] = ntohl(rfp->mode.rresq.data);
1501 if(fc->ongoaddr > fc->ongodev->rommax){
1502 fc->ongodev->rommax = fc->ongoaddr;
1503 }
1504 csrd = SLIST_FIRST(&fc->ongocsr);
1505 if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1506 chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1507 offset = CSRROMOFF;
1508 }else{
1509 chdr = (struct csrhdr *)&fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4];
1510 offset = csrd->off;
1511 }
1512 if(fc->ongoaddr > (CSRROMOFF + 0x14) && fc->ongoaddr != offset){
1513 csrreg = (struct csrreg *)&fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4];
1514 if( csrreg->key == 0x81 || csrreg->key == 0xd1){
1515 csrd = SLIST_FIRST(&fc->csrfree);
1516 if(csrd == NULL){
1517 goto nextnode;
1518 }else{
1519 csrd->ongoaddr = fc->ongoaddr;
1520 fc->ongoaddr += csrreg->val * 4;
1521 csrd->off = fc->ongoaddr;
1522 SLIST_REMOVE_HEAD(&fc->csrfree, link);
1523 SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1524 goto nextaddr;
1525 }
1526 }
1527 }
1528 fc->ongoaddr += 4;
1529 if(((fc->ongoaddr - offset)/4 > chdr->crc_len) &&
1530 (fc->ongodev->rommax < 0x414)){
1531 if(fc->ongodev->rommax <= 0x414){
1532 csrd = SLIST_FIRST(&fc->csrfree);
1533 if(csrd == NULL) goto nextnode;
1534 csrd->off = fc->ongoaddr;
1535 csrd->ongoaddr = fc->ongoaddr;
1536 SLIST_REMOVE_HEAD(&fc->csrfree, link);
1537 SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
1538 }
1539 goto nextaddr;
1540 }
1541
1542 while(((fc->ongoaddr - offset)/4 > chdr->crc_len)){
1543 if(csrd == NULL){
1544 goto nextnode;
1545 }
1546 fc->ongoaddr = csrd->ongoaddr + 4;
1547 SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1548 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1549 csrd = SLIST_FIRST(&fc->ongocsr);
1550 if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
1551 chdr = (struct csrhdr *)(fc->ongodev->csrrom);
1552 offset = CSRROMOFF;
1553 }else{
1554 chdr = (struct csrhdr *)&(fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4]);
1555 offset = csrd->off;
1556 }
1557 }
1558 if((fc->ongoaddr - CSRROMOFF) > CSRROMSIZE){
1559 goto nextnode;
1560 }
1561 }
1562 nextaddr:
1563 fw_xfer_free( xfer);
1564 fw_bus_explore(fc);
1565 return;
1566 errnode:
1567 fc->retry_count++;
1568 if (fc->ongodev != NULL)
1569 fc->ongodev->status = FWDEVINVAL;
1570 nextnode:
1571 fw_xfer_free( xfer);
1572 fc->ongonode++;
1573 /* housekeeping work space */
1574 fc->ongoaddr = CSRROMOFF;
1575 fc->ongodev = NULL;
1576 fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
1577 while((csrd = SLIST_FIRST(&fc->ongocsr)) != NULL){
1578 SLIST_REMOVE_HEAD(&fc->ongocsr, link);
1579 SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
1580 }
1581 fw_bus_explore(fc);
1582 return;
1583 }
1584
1585 /*
1586 * To attach sub-devices layer onto IEEE1394 bus.
1587 */
1588 static void
fw_attach_dev(struct firewire_comm * fc)1589 fw_attach_dev(struct firewire_comm *fc)
1590 {
1591 struct fw_device *fwdev, *next;
1592 int i, err;
1593 device_t *devlistp;
1594 int devcnt;
1595 struct firewire_dev_comm *fdc;
1596
1597 for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
1598 next = STAILQ_NEXT(fwdev, link);
1599 if (fwdev->status == FWDEVINIT) {
1600 fwdev->status = FWDEVATTACHED;
1601 } else if (fwdev->status == FWDEVINVAL) {
1602 fwdev->rcnt ++;
1603 if (fwdev->rcnt > hold_count) {
1604 /*
1605 * Remove devices which have not been seen
1606 * for a while.
1607 */
1608 STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
1609 link);
1610 kfree(fwdev, M_FW);
1611 }
1612 }
1613 }
1614
1615 err = device_get_children(fc->bdev, &devlistp, &devcnt);
1616 if( err != 0 )
1617 return;
1618 for( i = 0 ; i < devcnt ; i++){
1619 if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
1620 fdc = device_get_softc(devlistp[i]);
1621 if (fdc->post_explore != NULL)
1622 fdc->post_explore(fdc);
1623 }
1624 }
1625 kfree(devlistp, M_TEMP);
1626
1627 if (fc->retry_count > 0) {
1628 kprintf("probe failed for %d node\n", fc->retry_count);
1629 #if 0
1630 callout_reset(&fc->retry_probe_callout, hz*2,
1631 (void *)fc->ibr, (void *)fc);
1632 #endif
1633 }
1634 return;
1635 }
1636
1637 /*
1638 * To allocate uniq transaction label.
1639 */
1640 static int
fw_get_tlabel(struct firewire_comm * fc,struct fw_xfer * xfer)1641 fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
1642 {
1643 u_int i;
1644 struct tlabel *tl, *tmptl;
1645 static u_int32_t label = 0;
1646
1647 crit_enter();
1648 for( i = 0 ; i < 0x40 ; i ++){
1649 label = (label + 1) & 0x3f;
1650 for(tmptl = STAILQ_FIRST(&fc->tlabels[label]);
1651 tmptl != NULL; tmptl = STAILQ_NEXT(tmptl, link)){
1652 if (tmptl->xfer->send.hdr.mode.hdr.dst ==
1653 xfer->send.hdr.mode.hdr.dst)
1654 break;
1655 }
1656 if(tmptl == NULL) {
1657 tl = kmalloc(sizeof(struct tlabel), M_FW, M_WAITOK);
1658 tl->xfer = xfer;
1659 STAILQ_INSERT_TAIL(&fc->tlabels[label], tl, link);
1660 crit_exit();
1661 if (firewire_debug > 1)
1662 kprintf("fw_get_tlabel: dst=%d tl=%d\n",
1663 xfer->send.hdr.mode.hdr.dst, label);
1664 return(label);
1665 }
1666 }
1667 crit_exit();
1668
1669 kprintf("fw_get_tlabel: no free tlabel\n");
1670 return(-1);
1671 }
1672
1673 static void
fw_rcv_copy(struct fw_rcv_buf * rb)1674 fw_rcv_copy(struct fw_rcv_buf *rb)
1675 {
1676 struct fw_pkt *pkt;
1677 u_char *p;
1678 struct tcode_info *tinfo;
1679 u_int res, i, len, plen;
1680
1681 rb->xfer->recv.spd -= rb->spd;
1682
1683 pkt = (struct fw_pkt *)rb->vec->iov_base;
1684 tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
1685
1686 /* Copy header */
1687 p = (u_char *)&rb->xfer->recv.hdr;
1688 bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
1689 rb->vec->iov_base = (uint8_t *)rb->vec->iov_base + tinfo->hdr_len;
1690 rb->vec->iov_len -= tinfo->hdr_len;
1691
1692 /* Copy payload */
1693 p = (u_char *)rb->xfer->recv.payload;
1694 res = rb->xfer->recv.pay_len;
1695
1696 /* special handling for RRESQ */
1697 if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
1698 p != NULL && res >= sizeof(u_int32_t)) {
1699 *(u_int32_t *)p = pkt->mode.rresq.data;
1700 rb->xfer->recv.pay_len = sizeof(u_int32_t);
1701 return;
1702 }
1703
1704 if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
1705 return;
1706
1707 plen = pkt->mode.rresb.len;
1708
1709 for (i = 0; i < rb->nvec; i++, rb->vec++) {
1710 len = MIN(rb->vec->iov_len, plen);
1711 if (res < len) {
1712 kprintf("rcv buffer(%d) is %d bytes short.\n",
1713 rb->xfer->recv.pay_len, len - res);
1714 len = res;
1715 }
1716 bcopy(rb->vec->iov_base, p, len);
1717 p += len;
1718 res -= len;
1719 plen -= len;
1720 if (res == 0 || plen == 0)
1721 break;
1722 }
1723 rb->xfer->recv.pay_len -= res;
1724
1725 }
1726
1727 /*
1728 * Generic packet receving process.
1729 */
1730 void
fw_rcv(struct fw_rcv_buf * rb)1731 fw_rcv(struct fw_rcv_buf *rb)
1732 {
1733 struct fw_pkt *fp, *resfp;
1734 struct fw_bind *bind;
1735 int tcode;
1736 int i, len, oldstate;
1737 #if 0
1738 {
1739 u_int32_t *qld;
1740 int i;
1741 qld = (u_int32_t *)buf;
1742 kprintf("spd %d len:%d\n", spd, len);
1743 for( i = 0 ; i <= len && i < 32; i+= 4){
1744 kprintf("0x%08x ", ntohl(qld[i/4]));
1745 if((i % 16) == 15) kprintf("\n");
1746 }
1747 if((i % 16) != 15) kprintf("\n");
1748 }
1749 #endif
1750 fp = (struct fw_pkt *)rb->vec[0].iov_base;
1751 tcode = fp->mode.common.tcode;
1752 switch (tcode) {
1753 case FWTCODE_WRES:
1754 case FWTCODE_RRESQ:
1755 case FWTCODE_RRESB:
1756 case FWTCODE_LRES:
1757 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1758 fp->mode.hdr.tlrt >> 2);
1759 if(rb->xfer == NULL) {
1760 kprintf("fw_rcv: unknown response "
1761 "%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
1762 tcode_str[tcode], tcode,
1763 fp->mode.hdr.src,
1764 fp->mode.hdr.tlrt >> 2,
1765 fp->mode.hdr.tlrt & 3,
1766 fp->mode.rresq.data);
1767 #if 1
1768 kprintf("try ad-hoc work around!!\n");
1769 rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
1770 (fp->mode.hdr.tlrt >> 2)^3);
1771 if (rb->xfer == NULL) {
1772 kprintf("no use...\n");
1773 goto err;
1774 }
1775 #else
1776 goto err;
1777 #endif
1778 }
1779 fw_rcv_copy(rb);
1780 if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
1781 rb->xfer->resp = EIO;
1782 else
1783 rb->xfer->resp = 0;
1784 /* make sure the packet is drained in AT queue */
1785 oldstate = rb->xfer->state;
1786 rb->xfer->state = FWXF_RCVD;
1787 switch (oldstate) {
1788 case FWXF_SENT:
1789 fw_xfer_done(rb->xfer);
1790 break;
1791 case FWXF_START:
1792 #if 0
1793 if (firewire_debug)
1794 kprintf("not sent yet tl=%x\n", rb->xfer->tl);
1795 #endif
1796 break;
1797 default:
1798 kprintf("unexpected state %d\n", rb->xfer->state);
1799 }
1800 return;
1801 case FWTCODE_WREQQ:
1802 case FWTCODE_WREQB:
1803 case FWTCODE_RREQQ:
1804 case FWTCODE_RREQB:
1805 case FWTCODE_LREQ:
1806 bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
1807 fp->mode.rreqq.dest_lo);
1808 if(bind == NULL){
1809 kprintf("Unknown service addr 0x%04x:0x%08x %s(%x)"
1810 " src=0x%x data=%x\n",
1811 fp->mode.wreqq.dest_hi, fp->mode.wreqq.dest_lo,
1812 tcode_str[tcode], tcode,
1813 fp->mode.hdr.src, ntohl(fp->mode.wreqq.data));
1814 if (rb->fc->status == FWBUSRESET) {
1815 kprintf("fw_rcv: cannot respond(bus reset)!\n");
1816 goto err;
1817 }
1818 rb->xfer = fw_xfer_alloc(M_FWXFER);
1819 if(rb->xfer == NULL){
1820 return;
1821 }
1822 rb->xfer->send.spd = rb->spd;
1823 rb->xfer->send.pay_len = 0;
1824 resfp = &rb->xfer->send.hdr;
1825 switch (tcode) {
1826 case FWTCODE_WREQQ:
1827 case FWTCODE_WREQB:
1828 resfp->mode.hdr.tcode = FWTCODE_WRES;
1829 break;
1830 case FWTCODE_RREQQ:
1831 resfp->mode.hdr.tcode = FWTCODE_RRESQ;
1832 break;
1833 case FWTCODE_RREQB:
1834 resfp->mode.hdr.tcode = FWTCODE_RRESB;
1835 break;
1836 case FWTCODE_LREQ:
1837 resfp->mode.hdr.tcode = FWTCODE_LRES;
1838 break;
1839 }
1840 resfp->mode.hdr.dst = fp->mode.hdr.src;
1841 resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
1842 resfp->mode.hdr.pri = fp->mode.hdr.pri;
1843 resfp->mode.rresb.rtcode = RESP_ADDRESS_ERROR;
1844 resfp->mode.rresb.extcode = 0;
1845 resfp->mode.rresb.len = 0;
1846 /*
1847 rb->xfer->act.hand = fw_asy_callback;
1848 */
1849 rb->xfer->act.hand = fw_xfer_free;
1850 if(fw_asyreq(rb->fc, -1, rb->xfer)){
1851 fw_xfer_free(rb->xfer);
1852 return;
1853 }
1854 goto err;
1855 }
1856 len = 0;
1857 for (i = 0; i < rb->nvec; i ++)
1858 len += rb->vec[i].iov_len;
1859 switch(bind->act_type){
1860 case FWACT_XFER:
1861 crit_enter();
1862 rb->xfer = STAILQ_FIRST(&bind->xferlist);
1863 if (rb->xfer == NULL) {
1864 kprintf("Discard a packet for this bind.\n");
1865 crit_exit();
1866 goto err;
1867 }
1868 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1869 crit_exit();
1870 fw_rcv_copy(rb);
1871 rb->xfer->act.hand(rb->xfer);
1872 return;
1873 break;
1874 case FWACT_CH:
1875 if(rb->fc->ir[bind->sub]->queued >=
1876 rb->fc->ir[bind->sub]->maxq){
1877 device_printf(rb->fc->bdev,
1878 "Discard a packet %x %d\n",
1879 bind->sub,
1880 rb->fc->ir[bind->sub]->queued);
1881 goto err;
1882 }
1883 crit_enter();
1884 rb->xfer = STAILQ_FIRST(&bind->xferlist);
1885 if (rb->xfer == NULL) {
1886 kprintf("Discard packet for this bind\n");
1887 crit_exit();
1888 goto err;
1889 }
1890 STAILQ_REMOVE_HEAD(&bind->xferlist, link);
1891 crit_exit();
1892 fw_rcv_copy(rb);
1893 crit_enter();
1894 rb->fc->ir[bind->sub]->queued++;
1895 STAILQ_INSERT_TAIL(&rb->fc->ir[bind->sub]->q,
1896 rb->xfer, link);
1897 crit_exit();
1898
1899 wakeup((caddr_t)rb->fc->ir[bind->sub]);
1900
1901 return;
1902 break;
1903 default:
1904 goto err;
1905 break;
1906 }
1907 break;
1908 #if 0 /* shouldn't happen ?? or for GASP */
1909 case FWTCODE_STREAM:
1910 {
1911 struct fw_xferq *xferq;
1912
1913 xferq = rb->fc->ir[sub];
1914 #if 0
1915 kprintf("stream rcv dma %d len %d off %d spd %d\n",
1916 sub, len, off, spd);
1917 #endif
1918 if(xferq->queued >= xferq->maxq) {
1919 kprintf("receive queue is full\n");
1920 goto err;
1921 }
1922 /* XXX get xfer from xfer queue, we don't need copy for
1923 per packet mode */
1924 rb->xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
1925 vec[0].iov_len);
1926 if (rb->xfer == NULL) goto err;
1927 fw_rcv_copy(rb)
1928 crit_enter();
1929 xferq->queued++;
1930 STAILQ_INSERT_TAIL(&xferq->q, rb->xfer, link);
1931 crit_exit();
1932 sc = device_get_softc(rb->fc->bdev);
1933 KNOTE(&xferq->rkq.ki_note, 0);
1934 if (xferq->flag & FWXFERQ_WAKEUP) {
1935 xferq->flag &= ~FWXFERQ_WAKEUP;
1936 wakeup((caddr_t)xferq);
1937 }
1938 if (xferq->flag & FWXFERQ_HANDLER) {
1939 xferq->hand(xferq);
1940 }
1941 return;
1942 break;
1943 }
1944 #endif
1945 default:
1946 kprintf("fw_rcv: unknown tcode %d\n", tcode);
1947 break;
1948 }
1949 err:
1950 return;
1951 }
1952
1953 /*
1954 * Post process for Bus Manager election process.
1955 */
1956 static void
fw_try_bmr_callback(struct fw_xfer * xfer)1957 fw_try_bmr_callback(struct fw_xfer *xfer)
1958 {
1959 struct firewire_comm *fc;
1960 int bmr;
1961
1962 if (xfer == NULL)
1963 return;
1964 fc = xfer->fc;
1965 if (xfer->resp != 0)
1966 goto error;
1967 if (xfer->recv.payload == NULL)
1968 goto error;
1969 if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
1970 goto error;
1971
1972 bmr = ntohl(xfer->recv.payload[0]);
1973 if (bmr == 0x3f)
1974 bmr = fc->nodeid;
1975
1976 CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
1977 fw_xfer_free_buf(xfer);
1978 fw_bmr(fc);
1979 return;
1980
1981 error:
1982 device_printf(fc->bdev, "bus manager election failed\n");
1983 fw_xfer_free_buf(xfer);
1984 }
1985
1986
1987 /*
1988 * To candidate Bus Manager election process.
1989 */
1990 static void
fw_try_bmr(void * arg)1991 fw_try_bmr(void *arg)
1992 {
1993 struct fw_xfer *xfer;
1994 struct firewire_comm *fc = (struct firewire_comm *)arg;
1995 struct fw_pkt *fp;
1996 int err = 0;
1997
1998 xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
1999 if(xfer == NULL){
2000 return;
2001 }
2002 xfer->send.spd = 0;
2003 fc->status = FWBUSMGRELECT;
2004
2005 fp = &xfer->send.hdr;
2006 fp->mode.lreq.dest_hi = 0xffff;
2007 fp->mode.lreq.tlrt = 0;
2008 fp->mode.lreq.tcode = FWTCODE_LREQ;
2009 fp->mode.lreq.pri = 0;
2010 fp->mode.lreq.src = 0;
2011 fp->mode.lreq.len = 8;
2012 fp->mode.lreq.extcode = EXTCODE_CMP_SWAP;
2013 fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
2014 fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
2015 xfer->send.payload[0] = htonl(0x3f);
2016 xfer->send.payload[1] = htonl(fc->nodeid);
2017 xfer->act.hand = fw_try_bmr_callback;
2018
2019 err = fw_asyreq(fc, -1, xfer);
2020 if(err){
2021 fw_xfer_free_buf(xfer);
2022 return;
2023 }
2024 return;
2025 }
2026
2027 #ifdef FW_VMACCESS
2028 /*
2029 * Software implementation for physical memory block access.
2030 * XXX:Too slow, usef for debug purpose only.
2031 */
2032 static void
fw_vmaccess(struct fw_xfer * xfer)2033 fw_vmaccess(struct fw_xfer *xfer){
2034 struct fw_pkt *rfp, *sfp = NULL;
2035 u_int32_t *ld = (u_int32_t *)xfer->recv.buf;
2036
2037 kprintf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
2038 xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
2039 kprintf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
2040 if(xfer->resp != 0){
2041 fw_xfer_free( xfer);
2042 return;
2043 }
2044 if(xfer->recv.buf == NULL){
2045 fw_xfer_free( xfer);
2046 return;
2047 }
2048 rfp = (struct fw_pkt *)xfer->recv.buf;
2049 switch(rfp->mode.hdr.tcode){
2050 /* XXX need fix for 64bit arch */
2051 case FWTCODE_WREQB:
2052 xfer->send.buf = kmalloc(12, M_FW, M_WAITOK);
2053 xfer->send.len = 12;
2054 sfp = (struct fw_pkt *)xfer->send.buf;
2055 bcopy(rfp->mode.wreqb.payload,
2056 (caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
2057 sfp->mode.wres.tcode = FWTCODE_WRES;
2058 sfp->mode.wres.rtcode = 0;
2059 break;
2060 case FWTCODE_WREQQ:
2061 xfer->send.buf = kmalloc(12, M_FW, M_WAITOK);
2062 xfer->send.len = 12;
2063 sfp->mode.wres.tcode = FWTCODE_WRES;
2064 *((u_int32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
2065 sfp->mode.wres.rtcode = 0;
2066 break;
2067 case FWTCODE_RREQB:
2068 xfer->send.buf = kmalloc(16 + rfp->mode.rreqb.len, M_FW, M_WAITOK);
2069 xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
2070 sfp = (struct fw_pkt *)xfer->send.buf;
2071 bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
2072 sfp->mode.rresb.payload, (u_int16_t)ntohs(rfp->mode.rreqb.len));
2073 sfp->mode.rresb.tcode = FWTCODE_RRESB;
2074 sfp->mode.rresb.len = rfp->mode.rreqb.len;
2075 sfp->mode.rresb.rtcode = 0;
2076 sfp->mode.rresb.extcode = 0;
2077 break;
2078 case FWTCODE_RREQQ:
2079 xfer->send.buf = kmalloc(16, M_FW, M_WAITOK);
2080 xfer->send.len = 16;
2081 sfp = (struct fw_pkt *)xfer->send.buf;
2082 sfp->mode.rresq.data = *(u_int32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
2083 sfp->mode.wres.tcode = FWTCODE_RRESQ;
2084 sfp->mode.rresb.rtcode = 0;
2085 break;
2086 default:
2087 fw_xfer_free( xfer);
2088 return;
2089 }
2090 sfp->mode.hdr.dst = rfp->mode.hdr.src;
2091 xfer->dst = ntohs(rfp->mode.hdr.src);
2092 xfer->act.hand = fw_xfer_free;
2093 xfer->retry_req = fw_asybusy;
2094
2095 sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
2096 sfp->mode.hdr.pri = 0;
2097
2098 fw_asyreq(xfer->fc, -1, xfer);
2099 /**/
2100 return;
2101 }
2102 #endif
2103
2104 /*
2105 * CRC16 check-sum for IEEE1394 register blocks.
2106 */
2107 u_int16_t
fw_crc16(u_int32_t * ptr,u_int32_t len)2108 fw_crc16(u_int32_t *ptr, u_int32_t len){
2109 u_int32_t i, sum, crc = 0;
2110 int shift;
2111 len = (len + 3) & ~3;
2112 for(i = 0 ; i < len ; i+= 4){
2113 for( shift = 28 ; shift >= 0 ; shift -= 4){
2114 sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
2115 crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
2116 }
2117 crc &= 0xffff;
2118 }
2119 return((u_int16_t) crc);
2120 }
2121
2122 static int
fw_bmr(struct firewire_comm * fc)2123 fw_bmr(struct firewire_comm *fc)
2124 {
2125 struct fw_device fwdev;
2126 union fw_self_id *self_id;
2127 int cmstr;
2128 u_int32_t quad;
2129
2130 /* Check to see if the current root node is cycle master capable */
2131 self_id = &fc->topology_map->self_id[fc->max_node];
2132 if (fc->max_node > 0) {
2133 /* XXX check cmc bit of businfo block rather than contender */
2134 if (self_id->p0.link_active && self_id->p0.contender)
2135 cmstr = fc->max_node;
2136 else {
2137 device_printf(fc->bdev,
2138 "root node is not cycle master capable\n");
2139 /* XXX shall we be the cycle master? */
2140 cmstr = fc->nodeid;
2141 /* XXX need bus reset */
2142 }
2143 } else
2144 cmstr = -1;
2145
2146 device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
2147 if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
2148 /* We are not the bus manager */
2149 kprintf("\n");
2150 return(0);
2151 }
2152 kprintf("(me)\n");
2153
2154 /* Optimize gapcount */
2155 if(fc->max_hop <= MAX_GAPHOP )
2156 fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
2157 /* If we are the cycle master, nothing to do */
2158 if (cmstr == fc->nodeid || cmstr == -1)
2159 return 0;
2160 /* Bus probe has not finished, make dummy fwdev for cmstr */
2161 bzero(&fwdev, sizeof(fwdev));
2162 fwdev.fc = fc;
2163 fwdev.dst = cmstr;
2164 fwdev.speed = 0;
2165 fwdev.maxrec = 8; /* 512 */
2166 fwdev.status = FWDEVINIT;
2167 /* Set cmstr bit on the cycle master */
2168 quad = htonl(1 << 8);
2169 fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
2170 0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
2171
2172 return 0;
2173 }
2174
2175 static int
fw_modevent(module_t mode,int type,void * data)2176 fw_modevent(module_t mode, int type, void *data)
2177 {
2178 int err = 0;
2179 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2180 static eventhandler_tag fwdev_ehtag = NULL;
2181 #endif
2182
2183 switch (type) {
2184 case MOD_LOAD:
2185 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2186 fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
2187 fwdev_clone, 0, 1000);
2188 #endif
2189 break;
2190 case MOD_UNLOAD:
2191 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
2192 if (fwdev_ehtag != NULL)
2193 EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
2194 #endif
2195 break;
2196 case MOD_SHUTDOWN:
2197 break;
2198 }
2199 return (err);
2200 }
2201
2202 /*
2203 * This causes the firewire identify to be called for any attached fwohci
2204 * device in the system.
2205 */
2206 DECLARE_DUMMY_MODULE(firewire);
2207 DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,fw_modevent,NULL);
2208 MODULE_VERSION(firewire, 1);
2209