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