1 /*-
2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2003 Paul Saab
4 * Copyright (c) 2003 Vinod Kashyap
5 * Copyright (c) 2000 BSDi
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32 /*
33 * Driver for the 3ware Escalade family of IDE RAID controllers.
34 */
35
36 #include <dev/twe/twe_compat.h>
37 #include <dev/twe/twereg.h>
38 #include <dev/twe/tweio.h>
39 #include <dev/twe/twevar.h>
40 #define TWE_DEFINE_TABLES
41 #include <dev/twe/twe_tables.h>
42
43 /*
44 * Command submission.
45 */
46 static int twe_get_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t *result);
47 static int twe_get_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t *result);
48 static int twe_get_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t *result);
49 static void *twe_get_param(struct twe_softc *sc, int table_id, int parameter_id, size_t size,
50 void (* func)(struct twe_request *tr));
51 #ifdef TWE_SHUTDOWN_NOTIFICATION
52 static int twe_set_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t value);
53 #endif
54 #if 0
55 static int twe_set_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t value);
56 static int twe_set_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t value);
57 #endif
58 static int twe_set_param(struct twe_softc *sc, int table_id, int param_id, int param_size,
59 void *data);
60 static int twe_init_connection(struct twe_softc *sc, int mode);
61 static int twe_wait_request(struct twe_request *tr);
62 static int twe_immediate_request(struct twe_request *tr, int usetmp);
63 static void twe_completeio(struct twe_request *tr);
64 static void twe_reset(struct twe_softc *sc);
65 static int twe_add_unit(struct twe_softc *sc, int unit);
66 static int twe_del_unit(struct twe_softc *sc, int unit);
67
68 /*
69 * Command I/O to controller.
70 */
71 static void twe_done(struct twe_softc *sc, int startio);
72 static void twe_complete(struct twe_softc *sc);
73 static int twe_wait_status(struct twe_softc *sc, u_int32_t status, int timeout);
74 static int twe_drain_response_queue(struct twe_softc *sc);
75 static int twe_check_bits(struct twe_softc *sc, u_int32_t status_reg);
76 static int twe_soft_reset(struct twe_softc *sc);
77
78 /*
79 * Interrupt handling.
80 */
81 static void twe_host_intr(struct twe_softc *sc);
82 static void twe_attention_intr(struct twe_softc *sc);
83 static void twe_command_intr(struct twe_softc *sc);
84
85 /*
86 * Asynchronous event handling.
87 */
88 static int twe_fetch_aen(struct twe_softc *sc);
89 static void twe_handle_aen(struct twe_request *tr);
90 static void twe_enqueue_aen(struct twe_softc *sc, u_int16_t aen);
91 static u_int16_t twe_dequeue_aen(struct twe_softc *sc);
92 static int twe_drain_aen_queue(struct twe_softc *sc);
93 static int twe_find_aen(struct twe_softc *sc, u_int16_t aen);
94
95 /*
96 * Command buffer management.
97 */
98 static int twe_get_request(struct twe_softc *sc, struct twe_request **tr);
99 static void twe_release_request(struct twe_request *tr);
100
101 /*
102 * Debugging.
103 */
104 static char *twe_format_aen(struct twe_softc *sc, u_int16_t aen);
105 static int twe_report_request(struct twe_request *tr);
106 static void twe_panic(struct twe_softc *sc, char *reason);
107
108 /********************************************************************************
109 ********************************************************************************
110 Public Interfaces
111 ********************************************************************************
112 ********************************************************************************/
113
114 /********************************************************************************
115 * Initialise the controller, set up driver data structures.
116 */
117 int
twe_setup(struct twe_softc * sc)118 twe_setup(struct twe_softc *sc)
119 {
120 struct twe_request *tr;
121 TWE_Command *cmd;
122 u_int32_t status_reg;
123 int i;
124
125 debug_called(4);
126
127 /*
128 * Initialise request queues.
129 */
130 twe_initq_free(sc);
131 twe_initq_bio(sc);
132 twe_initq_ready(sc);
133 twe_initq_busy(sc);
134 twe_initq_complete(sc);
135 sc->twe_wait_aen = -1;
136
137 /*
138 * Allocate request structures up front.
139 */
140 for (i = 0; i < TWE_Q_LENGTH; i++) {
141 if ((tr = twe_allocate_request(sc, i)) == NULL)
142 return(ENOMEM);
143 /*
144 * Set global defaults that won't change.
145 */
146 cmd = TWE_FIND_COMMAND(tr);
147 cmd->generic.host_id = sc->twe_host_id; /* controller-assigned host ID */
148 cmd->generic.request_id = i; /* our index number */
149 sc->twe_lookup[i] = tr;
150
151 /*
152 * Put command onto the freelist.
153 */
154 TWE_IO_LOCK(sc);
155 twe_release_request(tr);
156 TWE_IO_UNLOCK(sc);
157 }
158 TWE_IO_LOCK(sc);
159
160 /*
161 * Check status register for errors, clear them.
162 */
163 status_reg = TWE_STATUS(sc);
164 twe_check_bits(sc, status_reg);
165
166 /*
167 * Wait for the controller to come ready.
168 */
169 if (twe_wait_status(sc, TWE_STATUS_MICROCONTROLLER_READY, 60)) {
170 TWE_IO_UNLOCK(sc);
171 twe_printf(sc, "microcontroller not ready\n");
172 return(ENXIO);
173 }
174
175 /*
176 * Disable interrupts from the card.
177 */
178 twe_disable_interrupts(sc);
179
180 /*
181 * Soft reset the controller, look for the AEN acknowledging the reset,
182 * check for errors, drain the response queue.
183 */
184 for (i = 0; i < TWE_MAX_RESET_TRIES; i++) {
185
186 if (i > 0)
187 twe_printf(sc, "reset %d failed, trying again\n", i);
188
189 if (!twe_soft_reset(sc))
190 break; /* reset process complete */
191 }
192 TWE_IO_UNLOCK(sc);
193 /* did we give up? */
194 if (i >= TWE_MAX_RESET_TRIES) {
195 twe_printf(sc, "can't initialise controller, giving up\n");
196 return(ENXIO);
197 }
198
199 return(0);
200 }
201
202 static int
twe_add_unit(struct twe_softc * sc,int unit)203 twe_add_unit(struct twe_softc *sc, int unit)
204 {
205 struct twe_drive *dr;
206 int table, error = 0;
207 u_int16_t dsize;
208 TWE_Param *drives = NULL, *param = NULL;
209 TWE_Array_Descriptor *ud;
210
211 TWE_CONFIG_ASSERT_LOCKED(sc);
212 if (unit < 0 || unit > TWE_MAX_UNITS)
213 return (EINVAL);
214
215 /*
216 * The controller is in a safe state, so try to find drives attached to it.
217 */
218 TWE_IO_LOCK(sc);
219 if ((drives = twe_get_param(sc, TWE_PARAM_UNITSUMMARY, TWE_PARAM_UNITSUMMARY_Status,
220 TWE_MAX_UNITS, NULL)) == NULL) {
221 TWE_IO_UNLOCK(sc);
222 twe_printf(sc, "can't detect attached units\n");
223 return (EIO);
224 }
225
226 dr = &sc->twe_drive[unit];
227 /* check that the drive is online */
228 if (!(drives->data[unit] & TWE_PARAM_UNITSTATUS_Online)) {
229 TWE_IO_UNLOCK(sc);
230 error = ENXIO;
231 goto out;
232 }
233
234 table = TWE_PARAM_UNITINFO + unit;
235
236 if (twe_get_param_4(sc, table, TWE_PARAM_UNITINFO_Capacity, &dr->td_size)) {
237 TWE_IO_UNLOCK(sc);
238 twe_printf(sc, "error fetching capacity for unit %d\n", unit);
239 error = EIO;
240 goto out;
241 }
242 if (twe_get_param_1(sc, table, TWE_PARAM_UNITINFO_Status, &dr->td_state)) {
243 TWE_IO_UNLOCK(sc);
244 twe_printf(sc, "error fetching state for unit %d\n", unit);
245 error = EIO;
246 goto out;
247 }
248 if (twe_get_param_2(sc, table, TWE_PARAM_UNITINFO_DescriptorSize, &dsize)) {
249 TWE_IO_UNLOCK(sc);
250 twe_printf(sc, "error fetching descriptor size for unit %d\n", unit);
251 error = EIO;
252 goto out;
253 }
254 if ((param = twe_get_param(sc, table, TWE_PARAM_UNITINFO_Descriptor, dsize - 3, NULL)) == NULL) {
255 TWE_IO_UNLOCK(sc);
256 twe_printf(sc, "error fetching descriptor for unit %d\n", unit);
257 error = EIO;
258 goto out;
259 }
260 ud = (TWE_Array_Descriptor *)param->data;
261 dr->td_type = ud->configuration;
262 dr->td_stripe = ud->stripe_size;
263
264 /* build synthetic geometry as per controller internal rules */
265 if (dr->td_size > 0x200000) {
266 dr->td_heads = 255;
267 dr->td_sectors = 63;
268 } else {
269 dr->td_heads = 64;
270 dr->td_sectors = 32;
271 }
272 dr->td_cylinders = dr->td_size / (dr->td_heads * dr->td_sectors);
273 dr->td_twe_unit = unit;
274 TWE_IO_UNLOCK(sc);
275
276 error = twe_attach_drive(sc, dr);
277
278 out:
279 if (param != NULL)
280 free(param, M_DEVBUF);
281 if (drives != NULL)
282 free(drives, M_DEVBUF);
283 return (error);
284 }
285
286 static int
twe_del_unit(struct twe_softc * sc,int unit)287 twe_del_unit(struct twe_softc *sc, int unit)
288 {
289 int error;
290
291 TWE_CONFIG_ASSERT_LOCKED(sc);
292 if (unit < 0 || unit >= TWE_MAX_UNITS)
293 return (ENXIO);
294
295 if (sc->twe_drive[unit].td_disk == NULL)
296 return (ENXIO);
297
298 error = twe_detach_drive(sc, unit);
299 return (error);
300 }
301
302 /********************************************************************************
303 * Locate disk devices and attach children to them.
304 */
305 void
twe_init(struct twe_softc * sc)306 twe_init(struct twe_softc *sc)
307 {
308 int i;
309
310 /*
311 * Scan for drives
312 */
313 TWE_CONFIG_LOCK(sc);
314 for (i = 0; i < TWE_MAX_UNITS; i++)
315 twe_add_unit(sc, i);
316 TWE_CONFIG_UNLOCK(sc);
317
318 /*
319 * Initialise connection with controller.
320 */
321 TWE_IO_LOCK(sc);
322 twe_init_connection(sc, TWE_INIT_MESSAGE_CREDITS);
323
324 #ifdef TWE_SHUTDOWN_NOTIFICATION
325 /*
326 * Tell the controller we support shutdown notification.
327 */
328 twe_set_param_1(sc, TWE_PARAM_FEATURES, TWE_PARAM_FEATURES_DriverShutdown, 1);
329 #endif
330
331 /*
332 * Mark controller up and ready to run.
333 */
334 sc->twe_state &= ~TWE_STATE_SHUTDOWN;
335
336 /*
337 * Finally enable interrupts.
338 */
339 twe_enable_interrupts(sc);
340 TWE_IO_UNLOCK(sc);
341 }
342
343 /********************************************************************************
344 * Stop the controller
345 */
346 void
twe_deinit(struct twe_softc * sc)347 twe_deinit(struct twe_softc *sc)
348 {
349 /*
350 * Mark the controller as shutting down, and disable any further interrupts.
351 */
352 TWE_IO_ASSERT_LOCKED(sc);
353 sc->twe_state |= TWE_STATE_SHUTDOWN;
354 twe_disable_interrupts(sc);
355
356 #ifdef TWE_SHUTDOWN_NOTIFICATION
357 /*
358 * Disconnect from the controller
359 */
360 twe_init_connection(sc, TWE_SHUTDOWN_MESSAGE_CREDITS);
361 #endif
362 }
363
364 /*******************************************************************************
365 * Take an interrupt, or be poked by other code to look for interrupt-worthy
366 * status.
367 */
368 void
twe_intr(struct twe_softc * sc)369 twe_intr(struct twe_softc *sc)
370 {
371 u_int32_t status_reg;
372
373 debug_called(4);
374
375 /*
376 * Collect current interrupt status.
377 */
378 status_reg = TWE_STATUS(sc);
379 twe_check_bits(sc, status_reg);
380
381 /*
382 * Dispatch based on interrupt status
383 */
384 if (status_reg & TWE_STATUS_HOST_INTERRUPT)
385 twe_host_intr(sc);
386 if (status_reg & TWE_STATUS_ATTENTION_INTERRUPT)
387 twe_attention_intr(sc);
388 if (status_reg & TWE_STATUS_COMMAND_INTERRUPT)
389 twe_command_intr(sc);
390 if (status_reg & TWE_STATUS_RESPONSE_INTERRUPT)
391 twe_done(sc, 1);
392 };
393
394 /********************************************************************************
395 * Pull as much work off the softc's work queue as possible and give it to the
396 * controller.
397 */
398 void
twe_startio(struct twe_softc * sc)399 twe_startio(struct twe_softc *sc)
400 {
401 struct twe_request *tr;
402 TWE_Command *cmd;
403 struct bio *bp;
404 int error;
405
406 debug_called(4);
407
408 TWE_IO_ASSERT_LOCKED(sc);
409 if (sc->twe_state & (TWE_STATE_CTLR_BUSY | TWE_STATE_FRZN))
410 return;
411
412 /* spin until something prevents us from doing any work */
413 for (;;) {
414
415 /* try to get a command that's already ready to go */
416 tr = twe_dequeue_ready(sc);
417
418 /* build a command from an outstanding bio */
419 if (tr == NULL) {
420
421 /* get a command to handle the bio with */
422 if (twe_get_request(sc, &tr))
423 break;
424
425 /* see if there's work to be done */
426 if ((bp = twe_dequeue_bio(sc)) == NULL) {
427 twe_release_request(tr);
428 break;
429 }
430
431 /* connect the bio to the command */
432 tr->tr_complete = twe_completeio;
433 tr->tr_private = bp;
434 tr->tr_data = bp->bio_data;
435 tr->tr_length = bp->bio_bcount;
436 cmd = TWE_FIND_COMMAND(tr);
437 if (bp->bio_cmd == BIO_READ) {
438 tr->tr_flags |= TWE_CMD_DATAIN;
439 cmd->io.opcode = TWE_OP_READ;
440 } else {
441 tr->tr_flags |= TWE_CMD_DATAOUT;
442 cmd->io.opcode = TWE_OP_WRITE;
443 }
444
445 /* build a suitable I/O command (assumes 512-byte rounded transfers) */
446 cmd->io.size = 3;
447 cmd->io.unit = *(int *)(bp->bio_driver1);
448 cmd->io.block_count = (tr->tr_length + TWE_BLOCK_SIZE - 1) / TWE_BLOCK_SIZE;
449 cmd->io.lba = bp->bio_pblkno;
450 }
451
452 /* did we find something to do? */
453 if (tr == NULL)
454 break;
455
456 /* try to map and submit the command to controller */
457 error = twe_map_request(tr);
458
459 if (error != 0) {
460 if (error == EBUSY)
461 break;
462 tr->tr_status = TWE_CMD_ERROR;
463 if (tr->tr_private != NULL) {
464 bp = (struct bio *)(tr->tr_private);
465 bp->bio_error = error;
466 bp->bio_flags |= BIO_ERROR;
467 tr->tr_private = NULL;
468 twed_intr(bp);
469 twe_release_request(tr);
470 } else if (tr->tr_flags & TWE_CMD_SLEEPER)
471 wakeup_one(tr); /* wakeup the sleeping owner */
472 }
473 }
474 }
475
476 /********************************************************************************
477 * Write blocks from memory to disk, for system crash dumps.
478 */
479 int
twe_dump_blocks(struct twe_softc * sc,int unit,u_int32_t lba,void * data,int nblks)480 twe_dump_blocks(struct twe_softc *sc, int unit, u_int32_t lba, void *data, int nblks)
481 {
482 struct twe_request *tr;
483 TWE_Command *cmd;
484 int error;
485
486 if (twe_get_request(sc, &tr))
487 return(ENOMEM);
488
489 tr->tr_data = data;
490 tr->tr_status = TWE_CMD_SETUP;
491 tr->tr_length = nblks * TWE_BLOCK_SIZE;
492 tr->tr_flags = TWE_CMD_DATAOUT;
493
494 cmd = TWE_FIND_COMMAND(tr);
495 cmd->io.opcode = TWE_OP_WRITE;
496 cmd->io.size = 3;
497 cmd->io.unit = unit;
498 cmd->io.block_count = nblks;
499 cmd->io.lba = lba;
500
501 error = twe_immediate_request(tr, 0);
502 if (error == 0)
503 if (twe_report_request(tr))
504 error = EIO;
505 twe_release_request(tr);
506 return(error);
507 }
508
509 /********************************************************************************
510 * Handle controller-specific control operations.
511 */
512 int
twe_ioctl(struct twe_softc * sc,u_long ioctlcmd,void * addr)513 twe_ioctl(struct twe_softc *sc, u_long ioctlcmd, void *addr)
514 {
515 struct twe_usercommand *tu = (struct twe_usercommand *)addr;
516 struct twe_paramcommand *tp = (struct twe_paramcommand *)addr;
517 struct twe_drivecommand *td = (struct twe_drivecommand *)addr;
518 union twe_statrequest *ts = (union twe_statrequest *)addr;
519 TWE_Param *param;
520 TWE_Command *cmd;
521 void *data;
522 u_int16_t *aen_code = (u_int16_t *)addr;
523 struct twe_request *tr;
524 u_int8_t srid;
525 int error;
526 size_t tr_length;
527
528 error = 0;
529 switch(ioctlcmd) {
530 /* handle a command from userspace */
531 case TWEIO_COMMAND:
532 /*
533 * if there's a data buffer, allocate and copy it in.
534 * Must be in multipled of 512 bytes.
535 */
536 tr_length = roundup2(tu->tu_size, 512);
537 if (tr_length > 0) {
538 data = malloc(tr_length, M_DEVBUF, M_WAITOK);
539 error = copyin(tu->tu_data, data, tu->tu_size);
540 if (error) {
541 free(data, M_DEVBUF);
542 break;
543 }
544 } else
545 data = NULL;
546
547 /* get a request */
548 TWE_IO_LOCK(sc);
549 while (twe_get_request(sc, &tr))
550 mtx_sleep(sc, &sc->twe_io_lock, PPAUSE, "twioctl", hz);
551
552 /*
553 * Save the command's request ID, copy the user-supplied command in,
554 * restore the request ID.
555 */
556 cmd = TWE_FIND_COMMAND(tr);
557 srid = cmd->generic.request_id;
558 bcopy(&tu->tu_command, cmd, sizeof(TWE_Command));
559 cmd->generic.request_id = srid;
560
561 tr->tr_length = tr_length;
562 tr->tr_data = data;
563 if (tr->tr_length > 0) {
564 tr->tr_flags |= TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
565 }
566
567 /* run the command */
568 error = twe_wait_request(tr);
569 TWE_IO_UNLOCK(sc);
570 if (error)
571 goto cmd_done;
572
573 /* copy the command out again */
574 bcopy(cmd, &tu->tu_command, sizeof(TWE_Command));
575
576 /* if there was a data buffer, copy it out */
577 if (tr->tr_length > 0)
578 error = copyout(tr->tr_data, tu->tu_data, tu->tu_size);
579
580 cmd_done:
581 /* free resources */
582 if (tr->tr_data != NULL)
583 free(tr->tr_data, M_DEVBUF);
584 TWE_IO_LOCK(sc);
585 twe_release_request(tr);
586 TWE_IO_UNLOCK(sc);
587
588 break;
589
590 /* fetch statistics counter */
591 case TWEIO_STATS:
592 switch (ts->ts_item) {
593 #ifdef TWE_PERFORMANCE_MONITOR
594 case TWEQ_FREE:
595 case TWEQ_BIO:
596 case TWEQ_READY:
597 case TWEQ_BUSY:
598 case TWEQ_COMPLETE:
599 TWE_IO_LOCK(sc);
600 bcopy(&sc->twe_qstat[ts->ts_item], &ts->ts_qstat, sizeof(struct twe_qstat));
601 TWE_IO_UNLOCK(sc);
602 break;
603 #endif
604 default:
605 error = ENOENT;
606 break;
607 }
608 break;
609
610 /* poll for an AEN */
611 case TWEIO_AEN_POLL:
612 TWE_IO_LOCK(sc);
613 *aen_code = twe_dequeue_aen(sc);
614 TWE_IO_UNLOCK(sc);
615 break;
616
617 /* wait for another AEN to show up */
618 case TWEIO_AEN_WAIT:
619 TWE_IO_LOCK(sc);
620 while ((*aen_code = twe_dequeue_aen(sc)) == TWE_AEN_QUEUE_EMPTY) {
621 error = mtx_sleep(&sc->twe_aen_queue, &sc->twe_io_lock, PRIBIO | PCATCH,
622 "tweaen", 0);
623 if (error == EINTR)
624 break;
625 }
626 TWE_IO_UNLOCK(sc);
627 break;
628
629 case TWEIO_GET_PARAM:
630 TWE_IO_LOCK(sc);
631 param = twe_get_param(sc, tp->tp_table_id, tp->tp_param_id, tp->tp_size, NULL);
632 TWE_IO_UNLOCK(sc);
633 if (param == NULL) {
634 twe_printf(sc, "TWEIO_GET_PARAM failed for 0x%x/0x%x/%d\n",
635 tp->tp_table_id, tp->tp_param_id, tp->tp_size);
636 error = EINVAL;
637 } else {
638 if (param->parameter_size_bytes > tp->tp_size) {
639 twe_printf(sc, "TWEIO_GET_PARAM parameter too large (%d > %d)\n",
640 param->parameter_size_bytes, tp->tp_size);
641 error = EFAULT;
642 } else {
643 error = copyout(param->data, tp->tp_data, param->parameter_size_bytes);
644 }
645 free(param, M_DEVBUF);
646 }
647 break;
648
649 case TWEIO_SET_PARAM:
650 data = malloc(tp->tp_size, M_DEVBUF, M_WAITOK);
651 error = copyin(tp->tp_data, data, tp->tp_size);
652 if (error == 0) {
653 TWE_IO_LOCK(sc);
654 error = twe_set_param(sc, tp->tp_table_id, tp->tp_param_id, tp->tp_size, data);
655 TWE_IO_UNLOCK(sc);
656 }
657 free(data, M_DEVBUF);
658 break;
659
660 case TWEIO_RESET:
661 TWE_IO_LOCK(sc);
662 twe_reset(sc);
663 TWE_IO_UNLOCK(sc);
664 break;
665
666 case TWEIO_ADD_UNIT:
667 TWE_CONFIG_LOCK(sc);
668 error = twe_add_unit(sc, td->td_unit);
669 TWE_CONFIG_UNLOCK(sc);
670 break;
671
672 case TWEIO_DEL_UNIT:
673 TWE_CONFIG_LOCK(sc);
674 error = twe_del_unit(sc, td->td_unit);
675 TWE_CONFIG_UNLOCK(sc);
676 break;
677
678 /* XXX implement ATA PASSTHROUGH */
679
680 /* nothing we understand */
681 default:
682 error = ENOTTY;
683 }
684
685 return(error);
686 }
687
688 /********************************************************************************
689 * Enable the useful interrupts from the controller.
690 */
691 void
twe_enable_interrupts(struct twe_softc * sc)692 twe_enable_interrupts(struct twe_softc *sc)
693 {
694 sc->twe_state |= TWE_STATE_INTEN;
695 TWE_CONTROL(sc,
696 TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT |
697 TWE_CONTROL_UNMASK_RESPONSE_INTERRUPT |
698 TWE_CONTROL_ENABLE_INTERRUPTS);
699 }
700
701 /********************************************************************************
702 * Disable interrupts from the controller.
703 */
704 void
twe_disable_interrupts(struct twe_softc * sc)705 twe_disable_interrupts(struct twe_softc *sc)
706 {
707 TWE_CONTROL(sc, TWE_CONTROL_DISABLE_INTERRUPTS);
708 sc->twe_state &= ~TWE_STATE_INTEN;
709 }
710
711 /********************************************************************************
712 ********************************************************************************
713 Command Submission
714 ********************************************************************************
715 ********************************************************************************/
716
717 /********************************************************************************
718 * Read integer parameter table entries.
719 */
720 static int
twe_get_param_1(struct twe_softc * sc,int table_id,int param_id,u_int8_t * result)721 twe_get_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t *result)
722 {
723 TWE_Param *param;
724
725 if ((param = twe_get_param(sc, table_id, param_id, 1, NULL)) == NULL)
726 return(ENOENT);
727 *result = *(u_int8_t *)param->data;
728 free(param, M_DEVBUF);
729 return(0);
730 }
731
732 static int
twe_get_param_2(struct twe_softc * sc,int table_id,int param_id,u_int16_t * result)733 twe_get_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t *result)
734 {
735 TWE_Param *param;
736
737 if ((param = twe_get_param(sc, table_id, param_id, 2, NULL)) == NULL)
738 return(ENOENT);
739 *result = *(u_int16_t *)param->data;
740 free(param, M_DEVBUF);
741 return(0);
742 }
743
744 static int
twe_get_param_4(struct twe_softc * sc,int table_id,int param_id,u_int32_t * result)745 twe_get_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t *result)
746 {
747 TWE_Param *param;
748
749 if ((param = twe_get_param(sc, table_id, param_id, 4, NULL)) == NULL)
750 return(ENOENT);
751 *result = *(u_int32_t *)param->data;
752 free(param, M_DEVBUF);
753 return(0);
754 }
755
756 /********************************************************************************
757 * Perform a TWE_OP_GET_PARAM command. If a callback function is provided, it
758 * will be called with the command when it's completed. If no callback is
759 * provided, we will wait for the command to complete and then return just the data.
760 * The caller is responsible for freeing the data when done with it.
761 */
762 static void *
twe_get_param(struct twe_softc * sc,int table_id,int param_id,size_t param_size,void (* func)(struct twe_request * tr))763 twe_get_param(struct twe_softc *sc, int table_id, int param_id, size_t param_size,
764 void (* func)(struct twe_request *tr))
765 {
766 struct twe_request *tr;
767 TWE_Command *cmd;
768 TWE_Param *param;
769 int error;
770
771 debug_called(4);
772
773 TWE_IO_ASSERT_LOCKED(sc);
774 tr = NULL;
775 param = NULL;
776
777 /* get a command */
778 if (twe_get_request(sc, &tr))
779 goto err;
780
781 /* get a buffer */
782 if ((param = (TWE_Param *)malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT)) == NULL)
783 goto err;
784 tr->tr_data = param;
785 tr->tr_length = TWE_SECTOR_SIZE;
786 tr->tr_flags = TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
787
788 /* build the command for the controller */
789 cmd = TWE_FIND_COMMAND(tr);
790 cmd->param.opcode = TWE_OP_GET_PARAM;
791 cmd->param.size = 2;
792 cmd->param.unit = 0;
793 cmd->param.param_count = 1;
794
795 /* fill in the outbound parameter data */
796 param->table_id = table_id;
797 param->parameter_id = param_id;
798 param->parameter_size_bytes = param_size;
799
800 /* submit the command and either wait or let the callback handle it */
801 if (func == NULL) {
802 /* XXX could use twe_wait_request here if interrupts were enabled? */
803 error = twe_immediate_request(tr, 1 /* usetmp */);
804 if (error == 0) {
805 if (twe_report_request(tr))
806 goto err;
807 } else {
808 goto err;
809 }
810 twe_release_request(tr);
811 return(param);
812 } else {
813 tr->tr_complete = func;
814 error = twe_map_request(tr);
815 if ((error == 0) || (error == EBUSY))
816 return(func);
817 }
818
819 /* something failed */
820 err:
821 debug(1, "failed");
822 if (tr != NULL)
823 twe_release_request(tr);
824 if (param != NULL)
825 free(param, M_DEVBUF);
826 return(NULL);
827 }
828
829 /********************************************************************************
830 * Set integer parameter table entries.
831 */
832 #ifdef TWE_SHUTDOWN_NOTIFICATION
833 static int
twe_set_param_1(struct twe_softc * sc,int table_id,int param_id,u_int8_t value)834 twe_set_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t value)
835 {
836 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
837 }
838 #endif
839
840 #if 0
841 static int
842 twe_set_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t value)
843 {
844 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
845 }
846
847 static int
848 twe_set_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t value)
849 {
850 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
851 }
852 #endif
853
854 /********************************************************************************
855 * Perform a TWE_OP_SET_PARAM command, returns nonzero on error.
856 */
857 static int
twe_set_param(struct twe_softc * sc,int table_id,int param_id,int param_size,void * data)858 twe_set_param(struct twe_softc *sc, int table_id, int param_id, int param_size, void *data)
859 {
860 struct twe_request *tr;
861 TWE_Command *cmd;
862 TWE_Param *param;
863 int error;
864
865 debug_called(4);
866
867 TWE_IO_ASSERT_LOCKED(sc);
868 tr = NULL;
869 param = NULL;
870 error = ENOMEM;
871
872 /* get a command */
873 if (twe_get_request(sc, &tr))
874 goto out;
875
876 /* get a buffer */
877 if ((param = (TWE_Param *)malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT)) == NULL)
878 goto out;
879 tr->tr_data = param;
880 tr->tr_length = TWE_SECTOR_SIZE;
881 tr->tr_flags = TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
882
883 /* build the command for the controller */
884 cmd = TWE_FIND_COMMAND(tr);
885 cmd->param.opcode = TWE_OP_SET_PARAM;
886 cmd->param.size = 2;
887 cmd->param.unit = 0;
888 cmd->param.param_count = 1;
889
890 /* fill in the outbound parameter data */
891 param->table_id = table_id;
892 param->parameter_id = param_id;
893 param->parameter_size_bytes = param_size;
894 bcopy(data, param->data, param_size);
895
896 /* XXX could use twe_wait_request here if interrupts were enabled? */
897 error = twe_immediate_request(tr, 1 /* usetmp */);
898 if (error == 0) {
899 if (twe_report_request(tr))
900 error = EIO;
901 }
902
903 out:
904 if (tr != NULL)
905 twe_release_request(tr);
906 if (param != NULL)
907 free(param, M_DEVBUF);
908 return(error);
909 }
910
911 /********************************************************************************
912 * Perform a TWE_OP_INIT_CONNECTION command, returns nonzero on error.
913 *
914 * Typically called with interrupts disabled.
915 */
916 static int
twe_init_connection(struct twe_softc * sc,int mode)917 twe_init_connection(struct twe_softc *sc, int mode)
918 {
919 struct twe_request *tr;
920 TWE_Command *cmd;
921 int error;
922
923 debug_called(4);
924
925 TWE_IO_ASSERT_LOCKED(sc);
926
927 /* get a command */
928 if (twe_get_request(sc, &tr))
929 return(0);
930
931 /* build the command */
932 cmd = TWE_FIND_COMMAND(tr);
933 cmd->initconnection.opcode = TWE_OP_INIT_CONNECTION;
934 cmd->initconnection.size = 3;
935 cmd->initconnection.host_id = 0;
936 cmd->initconnection.message_credits = mode;
937 cmd->initconnection.response_queue_pointer = 0;
938
939 /* submit the command */
940 error = twe_immediate_request(tr, 0 /* usetmp */);
941 twe_release_request(tr);
942
943 if (mode == TWE_INIT_MESSAGE_CREDITS)
944 sc->twe_host_id = cmd->initconnection.host_id;
945 return(error);
946 }
947
948 /********************************************************************************
949 * Start the command (tr) and sleep waiting for it to complete.
950 *
951 * Successfully completed commands are dequeued.
952 */
953 static int
twe_wait_request(struct twe_request * tr)954 twe_wait_request(struct twe_request *tr)
955 {
956
957 debug_called(4);
958
959 TWE_IO_ASSERT_LOCKED(tr->tr_sc);
960 tr->tr_flags |= TWE_CMD_SLEEPER;
961 tr->tr_status = TWE_CMD_BUSY;
962 twe_enqueue_ready(tr);
963 twe_startio(tr->tr_sc);
964 while (tr->tr_status == TWE_CMD_BUSY)
965 mtx_sleep(tr, &tr->tr_sc->twe_io_lock, PRIBIO, "twewait", 0);
966
967 return(tr->tr_status != TWE_CMD_COMPLETE);
968 }
969
970 /********************************************************************************
971 * Start the command (tr) and busy-wait for it to complete.
972 * This should only be used when interrupts are actually disabled (although it
973 * will work if they are not).
974 */
975 static int
twe_immediate_request(struct twe_request * tr,int usetmp)976 twe_immediate_request(struct twe_request *tr, int usetmp)
977 {
978 struct twe_softc *sc;
979 int error;
980 int count = 0;
981
982 debug_called(4);
983
984 sc = tr->tr_sc;
985
986 if (usetmp && (tr->tr_data != NULL)) {
987 tr->tr_flags |= TWE_CMD_IMMEDIATE;
988 if (tr->tr_length > DFLTPHYS)
989 return (EINVAL);
990 bcopy(tr->tr_data, sc->twe_immediate, tr->tr_length);
991 }
992 tr->tr_status = TWE_CMD_BUSY;
993 if ((error = twe_map_request(tr)) != 0)
994 if (error != EBUSY)
995 return(error);
996
997 /* Wait up to 5 seconds for the command to complete */
998 while ((count++ < 5000) && (tr->tr_status == TWE_CMD_BUSY)){
999 DELAY(1000);
1000 twe_done(sc, 1);
1001 }
1002 if (usetmp && (tr->tr_data != NULL))
1003 bcopy(sc->twe_immediate, tr->tr_data, tr->tr_length);
1004
1005 return(tr->tr_status != TWE_CMD_COMPLETE);
1006 }
1007
1008 /********************************************************************************
1009 * Handle completion of an I/O command.
1010 */
1011 static void
twe_completeio(struct twe_request * tr)1012 twe_completeio(struct twe_request *tr)
1013 {
1014 TWE_Command *cmd = TWE_FIND_COMMAND(tr);
1015 struct twe_softc *sc = tr->tr_sc;
1016 struct bio *bp = tr->tr_private;
1017
1018 debug_called(4);
1019
1020 if (tr->tr_status == TWE_CMD_COMPLETE) {
1021
1022 if (cmd->generic.status)
1023 if (twe_report_request(tr)) {
1024 bp->bio_error = EIO;
1025 bp->bio_flags |= BIO_ERROR;
1026 }
1027
1028 } else {
1029 twe_panic(sc, "twe_completeio on incomplete command");
1030 }
1031 tr->tr_private = NULL;
1032 twed_intr(bp);
1033 twe_release_request(tr);
1034 }
1035
1036 /********************************************************************************
1037 * Reset the controller and pull all the active commands back onto the ready
1038 * queue. Used to restart a controller that's exhibiting bad behaviour.
1039 */
1040 static void
twe_reset(struct twe_softc * sc)1041 twe_reset(struct twe_softc *sc)
1042 {
1043 struct twe_request *tr;
1044 int i;
1045
1046 /*
1047 * Sleep for a short period to allow AENs to be signalled.
1048 */
1049 mtx_sleep(sc, &sc->twe_io_lock, PRIBIO, "twereset", hz);
1050
1051 /*
1052 * Disable interrupts from the controller, and mask any accidental entry
1053 * into our interrupt handler.
1054 */
1055 twe_printf(sc, "controller reset in progress...\n");
1056 twe_disable_interrupts(sc);
1057
1058 /*
1059 * Try to soft-reset the controller.
1060 */
1061 for (i = 0; i < TWE_MAX_RESET_TRIES; i++) {
1062
1063 if (i > 0)
1064 twe_printf(sc, "reset %d failed, trying again\n", i);
1065
1066 if (!twe_soft_reset(sc))
1067 break; /* reset process complete */
1068 }
1069 /* did we give up? */
1070 if (i >= TWE_MAX_RESET_TRIES) {
1071 twe_printf(sc, "can't reset controller, giving up\n");
1072 goto out;
1073 }
1074
1075 /*
1076 * Move all of the commands that were busy back to the ready queue.
1077 */
1078 i = 0;
1079 while ((tr = twe_dequeue_busy(sc)) != NULL) {
1080 twe_enqueue_ready(tr);
1081 i++;
1082 }
1083
1084 /*
1085 * Kick the controller to start things going again, then re-enable interrupts.
1086 */
1087 twe_startio(sc);
1088 twe_printf(sc, "controller reset done, %d commands restarted\n", i);
1089
1090 out:
1091 twe_enable_interrupts(sc);
1092 }
1093
1094 /********************************************************************************
1095 ********************************************************************************
1096 Command I/O to Controller
1097 ********************************************************************************
1098 ********************************************************************************/
1099
1100 /********************************************************************************
1101 * Try to deliver (tr) to the controller.
1102 *
1103 * Can be called at any interrupt level, with or without interrupts enabled.
1104 */
1105 int
twe_start(struct twe_request * tr)1106 twe_start(struct twe_request *tr)
1107 {
1108 struct twe_softc *sc = tr->tr_sc;
1109 TWE_Command *cmd;
1110 int i;
1111 u_int32_t status_reg;
1112
1113 debug_called(4);
1114
1115 if (!dumping)
1116 TWE_IO_ASSERT_LOCKED(sc);
1117
1118 /* mark the command as currently being processed */
1119 tr->tr_status = TWE_CMD_BUSY;
1120 cmd = TWE_FIND_COMMAND(tr);
1121
1122 /*
1123 * Spin briefly waiting for the controller to come ready
1124 *
1125 * XXX it might be more efficient to return EBUSY immediately
1126 * and let the command be rescheduled.
1127 */
1128 for (i = 100000; (i > 0); i--) {
1129
1130 /* check to see if we can post a command */
1131 status_reg = TWE_STATUS(sc);
1132 twe_check_bits(sc, status_reg);
1133
1134 if (!(status_reg & TWE_STATUS_COMMAND_QUEUE_FULL)) {
1135 twe_enqueue_busy(tr);
1136
1137 TWE_COMMAND_QUEUE(sc, TWE_FIND_COMMANDPHYS(tr));
1138
1139 /* move command to work queue */
1140 #ifdef TWE_DEBUG
1141 if (tr->tr_complete != NULL) {
1142 debug(3, "queued request %d with callback %p", cmd->generic.request_id, tr->tr_complete);
1143 } else if (tr->tr_flags & TWE_CMD_SLEEPER) {
1144 debug(3, "queued request %d with wait channel %p", cmd->generic.request_id, tr);
1145 } else {
1146 debug(3, "queued request %d for polling caller", cmd->generic.request_id);
1147 }
1148 #endif
1149 return(0);
1150 } else if (!(status_reg & TWE_STATUS_RESPONSE_QUEUE_EMPTY) && i > 1)
1151 twe_done(sc, 0);
1152 }
1153
1154 /*
1155 * We couldn't get the controller to take the command; try submitting it again later.
1156 * This should only happen if something is wrong with the controller, or if we have
1157 * overestimated the number of commands it can accept. (Should we actually reject
1158 * the command at this point?)
1159 */
1160 return(EBUSY);
1161 }
1162
1163 /********************************************************************************
1164 * Poll the controller (sc) for completed commands.
1165 *
1166 * Can be called at any interrupt level, with or without interrupts enabled.
1167 */
1168 static void
twe_done(struct twe_softc * sc,int startio)1169 twe_done(struct twe_softc *sc, int startio)
1170 {
1171 TWE_Response_Queue rq;
1172 TWE_Command *cmd;
1173 struct twe_request *tr;
1174 int found;
1175 u_int32_t status_reg;
1176
1177 debug_called(5);
1178
1179 /* loop collecting completed commands */
1180 found = 0;
1181 for (;;) {
1182 status_reg = TWE_STATUS(sc);
1183 twe_check_bits(sc, status_reg); /* XXX should this fail? */
1184
1185 if (!(status_reg & TWE_STATUS_RESPONSE_QUEUE_EMPTY)) {
1186 found = 1;
1187 rq = TWE_RESPONSE_QUEUE(sc);
1188 tr = sc->twe_lookup[rq.u.response_id]; /* find command */
1189 cmd = TWE_FIND_COMMAND(tr);
1190 if (tr->tr_status != TWE_CMD_BUSY)
1191 twe_printf(sc, "completion event for nonbusy command\n");
1192 tr->tr_status = TWE_CMD_COMPLETE;
1193 debug(3, "completed request id %d with status %d",
1194 cmd->generic.request_id, cmd->generic.status);
1195 /* move to completed queue */
1196 twe_remove_busy(tr);
1197 twe_enqueue_complete(tr);
1198 sc->twe_state &= ~TWE_STATE_CTLR_BUSY;
1199 } else {
1200 break; /* no response ready */
1201 }
1202 }
1203
1204 /* if we've completed any commands, try posting some more */
1205 if (found && startio)
1206 twe_startio(sc);
1207
1208 /* handle completion and timeouts */
1209 twe_complete(sc); /* XXX use deferred completion? */
1210 }
1211
1212 /********************************************************************************
1213 * Perform post-completion processing for commands on (sc).
1214 *
1215 * This is split from twe_done as it can be safely deferred and run at a lower
1216 * priority level should facilities for such a thing become available.
1217 */
1218 static void
twe_complete(struct twe_softc * sc)1219 twe_complete(struct twe_softc *sc)
1220 {
1221 struct twe_request *tr;
1222
1223 debug_called(5);
1224
1225 /*
1226 * Pull commands off the completed list, dispatch them appropriately
1227 */
1228 while ((tr = twe_dequeue_complete(sc)) != NULL) {
1229 /* unmap the command's data buffer */
1230 twe_unmap_request(tr);
1231
1232 /* dispatch to suit command originator */
1233 if (tr->tr_complete != NULL) { /* completion callback */
1234 debug(2, "call completion handler %p", tr->tr_complete);
1235 tr->tr_complete(tr);
1236
1237 } else if (tr->tr_flags & TWE_CMD_SLEEPER) { /* caller is asleep waiting */
1238 debug(2, "wake up command owner on %p", tr);
1239 wakeup_one(tr);
1240
1241 } else { /* caller is polling command */
1242 debug(2, "command left for owner");
1243 }
1244 }
1245 }
1246
1247 /********************************************************************************
1248 * Wait for (status) to be set in the controller status register for up to
1249 * (timeout) seconds. Returns 0 if found, nonzero if we time out.
1250 *
1251 * Note: this busy-waits, rather than sleeping, since we may be called with
1252 * eg. clock interrupts masked.
1253 */
1254 static int
twe_wait_status(struct twe_softc * sc,u_int32_t status,int timeout)1255 twe_wait_status(struct twe_softc *sc, u_int32_t status, int timeout)
1256 {
1257 time_t expiry;
1258 u_int32_t status_reg;
1259
1260 debug_called(4);
1261
1262 expiry = time_second + timeout;
1263
1264 do {
1265 status_reg = TWE_STATUS(sc);
1266 if (status_reg & status) /* got the required bit(s)? */
1267 return(0);
1268 DELAY(100000);
1269 } while (time_second <= expiry);
1270
1271 return(1);
1272 }
1273
1274 /********************************************************************************
1275 * Drain the response queue, which may contain responses to commands we know
1276 * nothing about.
1277 */
1278 static int
twe_drain_response_queue(struct twe_softc * sc)1279 twe_drain_response_queue(struct twe_softc *sc)
1280 {
1281 TWE_Response_Queue rq;
1282 u_int32_t status_reg;
1283
1284 debug_called(4);
1285
1286 for (;;) { /* XXX give up eventually? */
1287 status_reg = TWE_STATUS(sc);
1288 if (twe_check_bits(sc, status_reg))
1289 return(1);
1290 if (status_reg & TWE_STATUS_RESPONSE_QUEUE_EMPTY)
1291 return(0);
1292 rq = TWE_RESPONSE_QUEUE(sc);
1293 }
1294 }
1295
1296 /********************************************************************************
1297 * Soft-reset the controller
1298 */
1299 static int
twe_soft_reset(struct twe_softc * sc)1300 twe_soft_reset(struct twe_softc *sc)
1301 {
1302 u_int32_t status_reg;
1303
1304 debug_called(2);
1305
1306 TWE_IO_ASSERT_LOCKED(sc);
1307 TWE_SOFT_RESET(sc);
1308
1309 if (twe_wait_status(sc, TWE_STATUS_ATTENTION_INTERRUPT, 30)) {
1310 twe_printf(sc, "no attention interrupt\n");
1311 return(1);
1312 }
1313 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT);
1314 if (twe_drain_aen_queue(sc)) {
1315 twe_printf(sc, "can't drain AEN queue\n");
1316 return(1);
1317 }
1318 if (twe_find_aen(sc, TWE_AEN_SOFT_RESET)) {
1319 twe_printf(sc, "reset not reported\n");
1320 return(1);
1321 }
1322 status_reg = TWE_STATUS(sc);
1323 if (TWE_STATUS_ERRORS(status_reg) || twe_check_bits(sc, status_reg)) {
1324 twe_printf(sc, "controller errors detected\n");
1325 return(1);
1326 }
1327 if (twe_drain_response_queue(sc)) {
1328 twe_printf(sc, "can't drain response queue\n");
1329 return(1);
1330 }
1331 return(0);
1332 }
1333
1334 /********************************************************************************
1335 ********************************************************************************
1336 Interrupt Handling
1337 ********************************************************************************
1338 ********************************************************************************/
1339
1340 /********************************************************************************
1341 * Host interrupt.
1342 *
1343 * XXX what does this mean?
1344 */
1345 static void
twe_host_intr(struct twe_softc * sc)1346 twe_host_intr(struct twe_softc *sc)
1347 {
1348 debug_called(4);
1349
1350 twe_printf(sc, "host interrupt\n");
1351 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_HOST_INTERRUPT);
1352 }
1353
1354 /********************************************************************************
1355 * Attention interrupt.
1356 *
1357 * Signalled when the controller has one or more AENs for us.
1358 */
1359 static void
twe_attention_intr(struct twe_softc * sc)1360 twe_attention_intr(struct twe_softc *sc)
1361 {
1362 debug_called(4);
1363
1364 /* instigate a poll for AENs */
1365 if (twe_fetch_aen(sc)) {
1366 twe_printf(sc, "error polling for signalled AEN\n");
1367 } else {
1368 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT);
1369 }
1370 }
1371
1372 /********************************************************************************
1373 * Command interrupt.
1374 *
1375 * Signalled when the controller can handle more commands.
1376 */
1377 static void
twe_command_intr(struct twe_softc * sc)1378 twe_command_intr(struct twe_softc *sc)
1379 {
1380 debug_called(4);
1381
1382 /*
1383 * We don't use this, rather we try to submit commands when we receive
1384 * them, and when other commands have completed. Mask it so we don't get
1385 * another one.
1386 */
1387 TWE_CONTROL(sc, TWE_CONTROL_MASK_COMMAND_INTERRUPT);
1388 }
1389
1390 /********************************************************************************
1391 ********************************************************************************
1392 Asynchronous Event Handling
1393 ********************************************************************************
1394 ********************************************************************************/
1395
1396 /********************************************************************************
1397 * Request an AEN from the controller.
1398 */
1399 static int
twe_fetch_aen(struct twe_softc * sc)1400 twe_fetch_aen(struct twe_softc *sc)
1401 {
1402
1403 debug_called(4);
1404
1405 if ((twe_get_param(sc, TWE_PARAM_AEN, TWE_PARAM_AEN_UnitCode, 2, twe_handle_aen)) == NULL)
1406 return(EIO);
1407 return(0);
1408 }
1409
1410 /********************************************************************************
1411 * Handle an AEN returned by the controller.
1412 */
1413 static void
twe_handle_aen(struct twe_request * tr)1414 twe_handle_aen(struct twe_request *tr)
1415 {
1416 struct twe_softc *sc = tr->tr_sc;
1417 TWE_Param *param;
1418 u_int16_t aen;
1419
1420 debug_called(4);
1421
1422 /* XXX check for command success somehow? */
1423
1424 param = (TWE_Param *)tr->tr_data;
1425 aen = *(u_int16_t *)(param->data);
1426
1427 free(tr->tr_data, M_DEVBUF);
1428 twe_release_request(tr);
1429 twe_enqueue_aen(sc, aen);
1430
1431 /* XXX poll for more AENs? */
1432 }
1433
1434 /********************************************************************************
1435 * Pull AENs out of the controller and park them in the queue, in a context where
1436 * interrupts aren't active. Return nonzero if we encounter any errors in the
1437 * process of obtaining all the available AENs.
1438 */
1439 static int
twe_drain_aen_queue(struct twe_softc * sc)1440 twe_drain_aen_queue(struct twe_softc *sc)
1441 {
1442 u_int16_t aen;
1443
1444 TWE_IO_ASSERT_LOCKED(sc);
1445 for (;;) {
1446 if (twe_get_param_2(sc, TWE_PARAM_AEN, TWE_PARAM_AEN_UnitCode, &aen))
1447 return(1);
1448 if (aen == TWE_AEN_QUEUE_EMPTY)
1449 return(0);
1450 twe_enqueue_aen(sc, aen);
1451 }
1452 }
1453
1454 /********************************************************************************
1455 * Push an AEN that we've received onto the queue.
1456 *
1457 * Note that we have to lock this against reentrance, since it may be called
1458 * from both interrupt and non-interrupt context.
1459 *
1460 * If someone is waiting for the AEN we have, wake them up.
1461 */
1462 static void
twe_enqueue_aen(struct twe_softc * sc,u_int16_t aen)1463 twe_enqueue_aen(struct twe_softc *sc, u_int16_t aen)
1464 {
1465 char *msg;
1466 int next, nextnext;
1467
1468 debug_called(4);
1469
1470 TWE_IO_ASSERT_LOCKED(sc);
1471 if ((msg = twe_format_aen(sc, aen)) != NULL)
1472 twe_printf(sc, "AEN: <%s>\n", msg);
1473
1474 /* enqueue the AEN */
1475 next = ((sc->twe_aen_head + 1) % TWE_Q_LENGTH);
1476 nextnext = ((sc->twe_aen_head + 2) % TWE_Q_LENGTH);
1477
1478 /* check to see if this is the last free slot, and subvert the AEN if it is */
1479 if (nextnext == sc->twe_aen_tail)
1480 aen = TWE_AEN_QUEUE_FULL;
1481
1482 /* look to see if there's room for this AEN */
1483 if (next != sc->twe_aen_tail) {
1484 sc->twe_aen_queue[sc->twe_aen_head] = aen;
1485 sc->twe_aen_head = next;
1486 }
1487
1488 /* wake up anyone asleep on the queue */
1489 wakeup(&sc->twe_aen_queue);
1490
1491 /* anyone looking for this AEN? */
1492 if (sc->twe_wait_aen == aen) {
1493 sc->twe_wait_aen = -1;
1494 wakeup(&sc->twe_wait_aen);
1495 }
1496 }
1497
1498 /********************************************************************************
1499 * Pop an AEN off the queue, or return -1 if there are none left.
1500 *
1501 * We are more or less interrupt-safe, so don't block interrupts.
1502 */
1503 static u_int16_t
twe_dequeue_aen(struct twe_softc * sc)1504 twe_dequeue_aen(struct twe_softc *sc)
1505 {
1506 u_int16_t result;
1507
1508 debug_called(4);
1509
1510 TWE_IO_ASSERT_LOCKED(sc);
1511 if (sc->twe_aen_tail == sc->twe_aen_head) {
1512 result = TWE_AEN_QUEUE_EMPTY;
1513 } else {
1514 result = sc->twe_aen_queue[sc->twe_aen_tail];
1515 sc->twe_aen_tail = ((sc->twe_aen_tail + 1) % TWE_Q_LENGTH);
1516 }
1517 return(result);
1518 }
1519
1520 /********************************************************************************
1521 * Check to see if the requested AEN is in the queue.
1522 *
1523 * XXX we could probably avoid masking interrupts here
1524 */
1525 static int
twe_find_aen(struct twe_softc * sc,u_int16_t aen)1526 twe_find_aen(struct twe_softc *sc, u_int16_t aen)
1527 {
1528 int i, missing;
1529
1530 missing = 1;
1531 for (i = sc->twe_aen_tail; (i != sc->twe_aen_head) && missing; i = (i + 1) % TWE_Q_LENGTH) {
1532 if (sc->twe_aen_queue[i] == aen)
1533 missing = 0;
1534 }
1535 return(missing);
1536 }
1537
1538
1539 #if 0 /* currently unused */
1540 /********************************************************************************
1541 * Sleep waiting for at least (timeout) seconds until we see (aen) as
1542 * requested. Returns nonzero on timeout or failure.
1543 *
1544 * XXX: this should not be used in cases where there may be more than one sleeper
1545 * without a mechanism for registering multiple sleepers.
1546 */
1547 static int
1548 twe_wait_aen(struct twe_softc *sc, int aen, int timeout)
1549 {
1550 time_t expiry;
1551 int found;
1552
1553 debug_called(4);
1554
1555 expiry = time_second + timeout;
1556 found = 0;
1557
1558 sc->twe_wait_aen = aen;
1559 do {
1560 twe_fetch_aen(sc);
1561 mtx_sleep(&sc->twe_wait_aen, &sc->twe_io_lock, PZERO, "twewaen", hz);
1562 if (sc->twe_wait_aen == -1)
1563 found = 1;
1564 } while ((time_second <= expiry) && !found);
1565 return(!found);
1566 }
1567 #endif
1568
1569 /********************************************************************************
1570 ********************************************************************************
1571 Command Buffer Management
1572 ********************************************************************************
1573 ********************************************************************************/
1574
1575 /********************************************************************************
1576 * Get a new command buffer.
1577 *
1578 * This will return NULL if all command buffers are in use.
1579 */
1580 static int
twe_get_request(struct twe_softc * sc,struct twe_request ** tr)1581 twe_get_request(struct twe_softc *sc, struct twe_request **tr)
1582 {
1583 TWE_Command *cmd;
1584 debug_called(4);
1585
1586 if (!dumping)
1587 TWE_IO_ASSERT_LOCKED(sc);
1588
1589 /* try to reuse an old buffer */
1590 *tr = twe_dequeue_free(sc);
1591
1592 /* initialise some fields to their defaults */
1593 if (*tr != NULL) {
1594 cmd = TWE_FIND_COMMAND(*tr);
1595 (*tr)->tr_data = NULL;
1596 (*tr)->tr_private = NULL;
1597 (*tr)->tr_status = TWE_CMD_SETUP; /* command is in setup phase */
1598 (*tr)->tr_flags = 0;
1599 (*tr)->tr_complete = NULL;
1600 cmd->generic.status = 0; /* before submission to controller */
1601 cmd->generic.flags = 0; /* not used */
1602 }
1603 return(*tr == NULL);
1604 }
1605
1606 /********************************************************************************
1607 * Release a command buffer for reuse.
1608 *
1609 */
1610 static void
twe_release_request(struct twe_request * tr)1611 twe_release_request(struct twe_request *tr)
1612 {
1613 debug_called(4);
1614
1615 if (!dumping)
1616 TWE_IO_ASSERT_LOCKED(tr->tr_sc);
1617 if (tr->tr_private != NULL)
1618 twe_panic(tr->tr_sc, "tr_private != NULL");
1619 twe_enqueue_free(tr);
1620 }
1621
1622 /********************************************************************************
1623 ********************************************************************************
1624 Debugging
1625 ********************************************************************************
1626 ********************************************************************************/
1627
1628 /********************************************************************************
1629 * Print some information about the controller
1630 */
1631 void
twe_describe_controller(struct twe_softc * sc)1632 twe_describe_controller(struct twe_softc *sc)
1633 {
1634 TWE_Param *p[6];
1635 u_int8_t ports;
1636 u_int32_t size;
1637 int i;
1638
1639 debug_called(2);
1640
1641 TWE_IO_LOCK(sc);
1642
1643 /* get the port count */
1644 twe_get_param_1(sc, TWE_PARAM_CONTROLLER, TWE_PARAM_CONTROLLER_PortCount, &ports);
1645
1646 /* get version strings */
1647 p[0] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_FW, 16, NULL);
1648 p[1] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_BIOS, 16, NULL);
1649 if (p[0] && p[1])
1650 twe_printf(sc, "%d ports, Firmware %.16s, BIOS %.16s\n", ports, p[0]->data, p[1]->data);
1651
1652 if (bootverbose) {
1653 p[2] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_Mon, 16, NULL);
1654 p[3] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCB, 8, NULL);
1655 p[4] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_ATA, 8, NULL);
1656 p[5] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCI, 8, NULL);
1657
1658 if (p[2] && p[3] && p[4] && p[5])
1659 twe_printf(sc, "Monitor %.16s, PCB %.8s, Achip %.8s, Pchip %.8s\n", p[2]->data, p[3]->data,
1660 p[4]->data, p[5]->data);
1661 if (p[2])
1662 free(p[2], M_DEVBUF);
1663 if (p[3])
1664 free(p[3], M_DEVBUF);
1665 if (p[4])
1666 free(p[4], M_DEVBUF);
1667 if (p[5])
1668 free(p[5], M_DEVBUF);
1669 }
1670 if (p[0])
1671 free(p[0], M_DEVBUF);
1672 if (p[1])
1673 free(p[1], M_DEVBUF);
1674
1675 /* print attached drives */
1676 if (bootverbose) {
1677 p[0] = twe_get_param(sc, TWE_PARAM_DRIVESUMMARY, TWE_PARAM_DRIVESUMMARY_Status, 16, NULL);
1678 for (i = 0; i < ports; i++) {
1679 if (p[0]->data[i] != TWE_PARAM_DRIVESTATUS_Present)
1680 continue;
1681 twe_get_param_4(sc, TWE_PARAM_DRIVEINFO + i, TWE_PARAM_DRIVEINFO_Size, &size);
1682 p[1] = twe_get_param(sc, TWE_PARAM_DRIVEINFO + i, TWE_PARAM_DRIVEINFO_Model, 40, NULL);
1683 if (p[1] != NULL) {
1684 twe_printf(sc, "port %d: %.40s %dMB\n", i, p[1]->data, size / 2048);
1685 free(p[1], M_DEVBUF);
1686 } else {
1687 twe_printf(sc, "port %d, drive status unavailable\n", i);
1688 }
1689 }
1690 if (p[0])
1691 free(p[0], M_DEVBUF);
1692 }
1693 TWE_IO_UNLOCK(sc);
1694 }
1695
1696 /********************************************************************************
1697 * Look up a text description of a numeric code and return a pointer to same.
1698 */
1699 char *
twe_describe_code(struct twe_code_lookup * table,u_int32_t code)1700 twe_describe_code(struct twe_code_lookup *table, u_int32_t code)
1701 {
1702 int i;
1703
1704 for (i = 0; table[i].string != NULL; i++)
1705 if (table[i].code == code)
1706 return(table[i].string);
1707 return(table[i+1].string);
1708 }
1709
1710 /********************************************************************************
1711 * Complain if the status bits aren't what we're expecting.
1712 *
1713 * Rate-limit the complaints to at most one of each every five seconds, but
1714 * always return the correct status.
1715 */
1716 static int
twe_check_bits(struct twe_softc * sc,u_int32_t status_reg)1717 twe_check_bits(struct twe_softc *sc, u_int32_t status_reg)
1718 {
1719 int result;
1720 static time_t lastwarn[2] = {0, 0};
1721
1722 /*
1723 * This can be a little problematic, as twe_panic may call twe_reset if
1724 * TWE_DEBUG is not set, which will call us again as part of the soft reset.
1725 */
1726 if ((status_reg & TWE_STATUS_PANIC_BITS) != 0) {
1727 twe_printf(sc, "FATAL STATUS BIT(S) %b\n", status_reg & TWE_STATUS_PANIC_BITS,
1728 TWE_STATUS_BITS_DESCRIPTION);
1729 twe_panic(sc, "fatal status bits");
1730 }
1731
1732 result = 0;
1733 if ((status_reg & TWE_STATUS_EXPECTED_BITS) != TWE_STATUS_EXPECTED_BITS) {
1734 if (time_second > (lastwarn[0] + 5)) {
1735 twe_printf(sc, "missing expected status bit(s) %b\n", ~status_reg & TWE_STATUS_EXPECTED_BITS,
1736 TWE_STATUS_BITS_DESCRIPTION);
1737 lastwarn[0] = time_second;
1738 }
1739 result = 1;
1740 }
1741
1742 if ((status_reg & TWE_STATUS_UNEXPECTED_BITS) != 0) {
1743 if (time_second > (lastwarn[1] + 5)) {
1744 twe_printf(sc, "unexpected status bit(s) %b\n", status_reg & TWE_STATUS_UNEXPECTED_BITS,
1745 TWE_STATUS_BITS_DESCRIPTION);
1746 lastwarn[1] = time_second;
1747 }
1748 result = 1;
1749 if (status_reg & TWE_STATUS_PCI_PARITY_ERROR) {
1750 twe_printf(sc, "PCI parity error: Reseat card, move card or buggy device present.\n");
1751 twe_clear_pci_parity_error(sc);
1752 }
1753 if (status_reg & TWE_STATUS_PCI_ABORT) {
1754 twe_printf(sc, "PCI abort, clearing.\n");
1755 twe_clear_pci_abort(sc);
1756 }
1757 }
1758
1759 return(result);
1760 }
1761
1762 /********************************************************************************
1763 * Return a string describing (aen).
1764 *
1765 * The low 8 bits of the aen are the code, the high 8 bits give the unit number
1766 * where an AEN is specific to a unit.
1767 *
1768 * Note that we could expand this routine to handle eg. up/downgrading the status
1769 * of a drive if we had some idea of what the drive's initial status was.
1770 */
1771
1772 static char *
twe_format_aen(struct twe_softc * sc,u_int16_t aen)1773 twe_format_aen(struct twe_softc *sc, u_int16_t aen)
1774 {
1775 device_t child;
1776 char *code, *msg;
1777
1778 code = twe_describe_code(twe_table_aen, TWE_AEN_CODE(aen));
1779 msg = code + 2;
1780
1781 switch (*code) {
1782 case 'q':
1783 if (!bootverbose)
1784 return(NULL);
1785 /* FALLTHROUGH */
1786 case 'a':
1787 return(msg);
1788
1789 case 'c':
1790 if ((child = sc->twe_drive[TWE_AEN_UNIT(aen)].td_disk) != NULL) {
1791 snprintf(sc->twe_aen_buf, sizeof(sc->twe_aen_buf), "twed%d: %s",
1792 device_get_unit(child), msg);
1793 } else {
1794 snprintf(sc->twe_aen_buf, sizeof(sc->twe_aen_buf),
1795 "twe%d: %s for unknown unit %d", device_get_unit(sc->twe_dev),
1796 msg, TWE_AEN_UNIT(aen));
1797 }
1798 return(sc->twe_aen_buf);
1799
1800 case 'p':
1801 snprintf(sc->twe_aen_buf, sizeof(sc->twe_aen_buf),
1802 "twe%d: port %d: %s", device_get_unit(sc->twe_dev),
1803 TWE_AEN_UNIT(aen), msg);
1804 return(sc->twe_aen_buf);
1805
1806
1807 case 'x':
1808 default:
1809 break;
1810 }
1811 snprintf(sc->twe_aen_buf, sizeof(sc->twe_aen_buf), "unknown AEN 0x%x", aen);
1812 return(sc->twe_aen_buf);
1813 }
1814
1815 /********************************************************************************
1816 * Print a diagnostic if the status of the command warrants it, and return
1817 * either zero (command was ok) or nonzero (command failed).
1818 */
1819 static int
twe_report_request(struct twe_request * tr)1820 twe_report_request(struct twe_request *tr)
1821 {
1822 struct twe_softc *sc = tr->tr_sc;
1823 TWE_Command *cmd = TWE_FIND_COMMAND(tr);
1824 int result = 0;
1825
1826 /*
1827 * Check the command status value and handle accordingly.
1828 */
1829 if (cmd->generic.status == TWE_STATUS_RESET) {
1830 /*
1831 * The status code 0xff requests a controller reset.
1832 */
1833 twe_printf(sc, "command returned with controller reset request\n");
1834 twe_reset(sc);
1835 result = 1;
1836 } else if (cmd->generic.status > TWE_STATUS_FATAL) {
1837 /*
1838 * Fatal errors that don't require controller reset.
1839 *
1840 * We know a few special flags values.
1841 */
1842 switch (cmd->generic.flags) {
1843 case 0x1b:
1844 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1845 "drive timeout");
1846 break;
1847 case 0x51:
1848 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1849 "unrecoverable drive error");
1850 break;
1851 default:
1852 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1853 "controller error - %s (flags = 0x%x)\n",
1854 twe_describe_code(twe_table_status, cmd->generic.status),
1855 cmd->generic.flags);
1856 result = 1;
1857 }
1858 } else if (cmd->generic.status > TWE_STATUS_WARNING) {
1859 /*
1860 * Warning level status.
1861 */
1862 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1863 "warning - %s (flags = 0x%x)\n",
1864 twe_describe_code(twe_table_status, cmd->generic.status),
1865 cmd->generic.flags);
1866 } else if (cmd->generic.status > 0x40) {
1867 /*
1868 * Info level status.
1869 */
1870 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1871 "attention - %s (flags = 0x%x)\n",
1872 twe_describe_code(twe_table_status, cmd->generic.status),
1873 cmd->generic.flags);
1874 }
1875
1876 return(result);
1877 }
1878
1879 /********************************************************************************
1880 * Print some controller state to aid in debugging error/panic conditions
1881 */
1882 void
twe_print_controller(struct twe_softc * sc)1883 twe_print_controller(struct twe_softc *sc)
1884 {
1885 u_int32_t status_reg;
1886
1887 status_reg = TWE_STATUS(sc);
1888 twe_printf(sc, "status %b\n", status_reg, TWE_STATUS_BITS_DESCRIPTION);
1889 twe_printf(sc, " current max min\n");
1890 twe_printf(sc, "free %04d %04d %04d\n",
1891 sc->twe_qstat[TWEQ_FREE].q_length, sc->twe_qstat[TWEQ_FREE].q_max, sc->twe_qstat[TWEQ_FREE].q_min);
1892
1893 twe_printf(sc, "ready %04d %04d %04d\n",
1894 sc->twe_qstat[TWEQ_READY].q_length, sc->twe_qstat[TWEQ_READY].q_max, sc->twe_qstat[TWEQ_READY].q_min);
1895
1896 twe_printf(sc, "busy %04d %04d %04d\n",
1897 sc->twe_qstat[TWEQ_BUSY].q_length, sc->twe_qstat[TWEQ_BUSY].q_max, sc->twe_qstat[TWEQ_BUSY].q_min);
1898
1899 twe_printf(sc, "complete %04d %04d %04d\n",
1900 sc->twe_qstat[TWEQ_COMPLETE].q_length, sc->twe_qstat[TWEQ_COMPLETE].q_max, sc->twe_qstat[TWEQ_COMPLETE].q_min);
1901
1902 twe_printf(sc, "bioq %04d %04d %04d\n",
1903 sc->twe_qstat[TWEQ_BIO].q_length, sc->twe_qstat[TWEQ_BIO].q_max, sc->twe_qstat[TWEQ_BIO].q_min);
1904
1905 twe_printf(sc, "AEN queue head %d tail %d\n", sc->twe_aen_head, sc->twe_aen_tail);
1906 }
1907
1908 static void
twe_panic(struct twe_softc * sc,char * reason)1909 twe_panic(struct twe_softc *sc, char *reason)
1910 {
1911 twe_print_controller(sc);
1912 #ifdef TWE_DEBUG
1913 panic(reason);
1914 #else
1915 twe_reset(sc);
1916 #endif
1917 }
1918
1919 #if 0
1920 /********************************************************************************
1921 * Print a request/command in human-readable format.
1922 */
1923 static void
1924 twe_print_request(struct twe_request *tr)
1925 {
1926 struct twe_softc *sc = tr->tr_sc;
1927 TWE_Command *cmd = TWE_FIND_COMMAND(tr);
1928 int i;
1929
1930 twe_printf(sc, "CMD: request_id %d opcode <%s> size %d unit %d host_id %d\n",
1931 cmd->generic.request_id, twe_describe_code(twe_table_opcode, cmd->generic.opcode), cmd->generic.size,
1932 cmd->generic.unit, cmd->generic.host_id);
1933 twe_printf(sc, " status %d flags 0x%x count %d sgl_offset %d\n",
1934 cmd->generic.status, cmd->generic.flags, cmd->generic.count, cmd->generic.sgl_offset);
1935
1936 switch(cmd->generic.opcode) { /* XXX add more opcodes? */
1937 case TWE_OP_READ:
1938 case TWE_OP_WRITE:
1939 twe_printf(sc, " lba %d\n", cmd->io.lba);
1940 for (i = 0; (i < TWE_MAX_SGL_LENGTH) && (cmd->io.sgl[i].length != 0); i++)
1941 twe_printf(sc, " %d: 0x%x/%d\n",
1942 i, cmd->io.sgl[i].address, cmd->io.sgl[i].length);
1943 break;
1944
1945 case TWE_OP_GET_PARAM:
1946 case TWE_OP_SET_PARAM:
1947 for (i = 0; (i < TWE_MAX_SGL_LENGTH) && (cmd->param.sgl[i].length != 0); i++)
1948 twe_printf(sc, " %d: 0x%x/%d\n",
1949 i, cmd->param.sgl[i].address, cmd->param.sgl[i].length);
1950 break;
1951
1952 case TWE_OP_INIT_CONNECTION:
1953 twe_printf(sc, " response queue pointer 0x%x\n",
1954 cmd->initconnection.response_queue_pointer);
1955 break;
1956
1957 default:
1958 break;
1959 }
1960 twe_printf(sc, " tr_command %p/0x%x tr_data %p/0x%x,%d\n",
1961 tr, TWE_FIND_COMMANDPHYS(tr), tr->tr_data, tr->tr_dataphys, tr->tr_length);
1962 twe_printf(sc, " tr_status %d tr_flags 0x%x tr_complete %p tr_private %p\n",
1963 tr->tr_status, tr->tr_flags, tr->tr_complete, tr->tr_private);
1964 }
1965
1966 #endif
1967