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