2 * Copyright (c) 2000 Michael Smith
3 * Copyright (c) 2000 BSDi
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/twe/twe.c,v 1.1.2.6 2002/03/07 09:57:02 msmith Exp $
28 * $DragonFly: src/sys/dev/raid/twe/twe.c,v 1.4 2003/08/07 21:17:09 dillon Exp $
32 * Driver for the 3ware Escalade family of IDE RAID controllers.
35 #include "twe_compat.h"
39 #define TWE_DEFINE_TABLES
40 #include "twe_tables.h"
45 static int twe_get_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t *result);
46 static int twe_get_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t *result);
47 static int twe_get_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t *result);
48 static void *twe_get_param(struct twe_softc *sc, int table_id, int parameter_id, size_t size,
49 void (* func)(struct twe_request *tr));
50 #ifdef TWE_SHUTDOWN_NOTIFICATION
51 static int twe_set_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t value);
54 static int twe_set_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t value);
55 static int twe_set_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t value);
57 static int twe_set_param(struct twe_softc *sc, int table_id, int param_id, int param_size,
59 static int twe_init_connection(struct twe_softc *sc, int mode);
60 static int twe_wait_request(struct twe_request *tr);
61 static int twe_immediate_request(struct twe_request *tr);
62 static void twe_completeio(struct twe_request *tr);
63 static void twe_reset(struct twe_softc *sc);
66 * Command I/O to controller.
68 static int twe_start(struct twe_request *tr);
69 static void twe_done(struct twe_softc *sc);
70 static void twe_complete(struct twe_softc *sc);
71 static int twe_wait_status(struct twe_softc *sc, u_int32_t status, int timeout);
72 static int twe_drain_response_queue(struct twe_softc *sc);
73 static int twe_check_bits(struct twe_softc *sc, u_int32_t status_reg);
74 static int twe_soft_reset(struct twe_softc *sc);
79 static void twe_host_intr(struct twe_softc *sc);
80 static void twe_attention_intr(struct twe_softc *sc);
81 static void twe_command_intr(struct twe_softc *sc);
84 * Asynchronous event handling.
86 static int twe_fetch_aen(struct twe_softc *sc);
87 static void twe_handle_aen(struct twe_request *tr);
88 static void twe_enqueue_aen(struct twe_softc *sc, u_int16_t aen);
89 static int twe_dequeue_aen(struct twe_softc *sc);
90 static int twe_drain_aen_queue(struct twe_softc *sc);
91 static int twe_find_aen(struct twe_softc *sc, u_int16_t aen);
94 * Command buffer management.
96 static int twe_get_request(struct twe_softc *sc, struct twe_request **tr);
97 static void twe_release_request(struct twe_request *tr);
102 static char *twe_format_aen(struct twe_softc *sc, u_int16_t aen);
103 static int twe_report_request(struct twe_request *tr);
104 static void twe_panic(struct twe_softc *sc, char *reason);
106 /********************************************************************************
107 ********************************************************************************
109 ********************************************************************************
110 ********************************************************************************/
112 /********************************************************************************
113 * Initialise the controller, set up driver data structures.
116 twe_setup(struct twe_softc *sc)
118 struct twe_request *tr;
119 u_int32_t status_reg;
125 * Initialise request queues.
131 twe_initq_complete(sc);
132 sc->twe_wait_aen = -1;
135 * Allocate request structures up front.
137 for (i = 0; i < TWE_Q_LENGTH; i++) {
138 if ((tr = twe_allocate_request(sc)) == NULL)
141 * Set global defaults that won't change.
143 tr->tr_command.generic.host_id = sc->twe_host_id; /* controller-assigned host ID */
144 tr->tr_command.generic.request_id = i; /* our index number */
145 sc->twe_lookup[i] = tr;
148 * Put command onto the freelist.
150 twe_release_request(tr);
154 * Check status register for errors, clear them.
156 status_reg = TWE_STATUS(sc);
157 twe_check_bits(sc, status_reg);
160 * Wait for the controller to come ready.
162 if (twe_wait_status(sc, TWE_STATUS_MICROCONTROLLER_READY, 60)) {
163 twe_printf(sc, "microcontroller not ready\n");
168 * Disable interrupts from the card.
170 twe_disable_interrupts(sc);
173 * Soft reset the controller, look for the AEN acknowledging the reset,
174 * check for errors, drain the response queue.
176 for (i = 0; i < TWE_MAX_RESET_TRIES; i++) {
179 twe_printf(sc, "reset %d failed, trying again\n", i);
181 if (!twe_soft_reset(sc))
182 break; /* reset process complete */
184 /* did we give up? */
185 if (i >= TWE_MAX_RESET_TRIES) {
186 twe_printf(sc, "can't initialise controller, giving up\n");
193 /********************************************************************************
194 * Locate disk devices and attach children to them.
197 twe_init(struct twe_softc *sc)
199 struct twe_drive *dr;
202 TWE_Param *drives, *param;
203 TWE_Unit_Descriptor *ud;
207 * The controller is in a safe state, so try to find drives attached to it.
209 if ((drives = twe_get_param(sc, TWE_PARAM_UNITSUMMARY, TWE_PARAM_UNITSUMMARY_Status,
210 TWE_MAX_UNITS, NULL)) == NULL) {
211 twe_printf(sc, "can't detect attached units\n");
216 * For each detected unit, create a child device.
218 for (i = 0, dr = &sc->twe_drive[0]; i < TWE_MAX_UNITS; i++, dr++) {
220 /* check that the drive is online */
221 if (!(drives->data[i] & TWE_PARAM_UNITSTATUS_Online))
224 table = TWE_PARAM_UNITINFO + i;
226 if (twe_get_param_4(sc, table, TWE_PARAM_UNITINFO_Capacity, &dr->td_size)) {
227 twe_printf(sc, "error fetching capacity for unit %d\n", i);
230 if (twe_get_param_1(sc, table, TWE_PARAM_UNITINFO_Status, &dr->td_state)) {
231 twe_printf(sc, "error fetching state for unit %d\n", i);
234 if (twe_get_param_2(sc, table, TWE_PARAM_UNITINFO_DescriptorSize, &dsize)) {
235 twe_printf(sc, "error fetching descriptor size for unit %d\n", i);
238 if ((param = twe_get_param(sc, table, TWE_PARAM_UNITINFO_Descriptor, dsize - 3, NULL)) == NULL) {
239 twe_printf(sc, "error fetching descriptor for unit %d\n", i);
242 ud = (TWE_Unit_Descriptor *)param->data;
243 dr->td_type = ud->configuration;
244 free(param, M_DEVBUF);
246 /* build synthetic geometry as per controller internal rules */
247 if (dr->td_size > 0x200000) {
254 dr->td_cylinders = dr->td_size / (dr->td_heads * dr->td_sectors);
257 twe_attach_drive(sc, dr);
259 free(drives, M_DEVBUF);
262 * Initialise connection with controller.
264 twe_init_connection(sc, TWE_INIT_MESSAGE_CREDITS);
266 #ifdef TWE_SHUTDOWN_NOTIFICATION
268 * Tell the controller we support shutdown notification.
270 twe_set_param_1(sc, TWE_PARAM_FEATURES, TWE_PARAM_FEATURES_DriverShutdown, 1);
274 * Mark controller up and ready to run.
276 sc->twe_state &= ~TWE_STATE_SHUTDOWN;
279 * Finally enable interrupts.
281 twe_enable_interrupts(sc);
284 /********************************************************************************
285 * Stop the controller
288 twe_deinit(struct twe_softc *sc)
291 * Mark the controller as shutting down, and disable any further interrupts.
293 sc->twe_state |= TWE_STATE_SHUTDOWN;
294 twe_disable_interrupts(sc);
296 #ifdef TWE_SHUTDOWN_NOTIFICATION
298 * Disconnect from the controller
300 twe_init_connection(sc, TWE_SHUTDOWN_MESSAGE_CREDITS);
304 /*******************************************************************************
305 * Take an interrupt, or be poked by other code to look for interrupt-worthy
309 twe_intr(struct twe_softc *sc)
311 u_int32_t status_reg;
316 * Collect current interrupt status.
318 status_reg = TWE_STATUS(sc);
319 twe_check_bits(sc, status_reg);
322 * Dispatch based on interrupt status
324 if (status_reg & TWE_STATUS_HOST_INTERRUPT)
326 if (status_reg & TWE_STATUS_ATTENTION_INTERRUPT)
327 twe_attention_intr(sc);
328 if (status_reg & TWE_STATUS_COMMAND_INTERRUPT)
329 twe_command_intr(sc);
330 if (status_reg & TWE_STATUS_RESPONSE_INTERRUPT)
334 /********************************************************************************
335 * Pull as much work off the softc's work queue as possible and give it to the
339 twe_startio(struct twe_softc *sc)
341 struct twe_request *tr;
348 /* spin until something prevents us from doing any work */
351 /* try to get a command that's already ready to go */
352 tr = twe_dequeue_ready(sc);
354 /* build a command from an outstanding bio */
357 /* see if there's work to be done */
358 if ((bp = twe_dequeue_bio(sc)) == NULL)
361 /* get a command to handle the bio with */
362 if (twe_get_request(sc, &tr)) {
363 twe_enqueue_bio(sc, bp); /* failed, put the bio back */
367 /* connect the bio to the command */
368 tr->tr_complete = twe_completeio;
370 tr->tr_data = TWE_BIO_DATA(bp);
371 tr->tr_length = TWE_BIO_LENGTH(bp);
372 cmd = &tr->tr_command;
373 if (TWE_BIO_IS_READ(bp)) {
374 tr->tr_flags |= TWE_CMD_DATAIN;
375 cmd->io.opcode = TWE_OP_READ;
377 tr->tr_flags |= TWE_CMD_DATAOUT;
378 cmd->io.opcode = TWE_OP_WRITE;
381 /* build a suitable I/O command (assumes 512-byte rounded transfers) */
383 cmd->io.unit = TWE_BIO_UNIT(bp);
384 cmd->io.block_count = (tr->tr_length + TWE_BLOCK_SIZE - 1) / TWE_BLOCK_SIZE;
385 cmd->io.lba = TWE_BIO_LBA(bp);
387 /* map the command so the controller can work with it */
391 /* did we find something to do? */
395 /* try to give command to controller */
396 error = twe_start(tr);
399 if (error == EBUSY) {
400 twe_requeue_ready(tr); /* try it again later */
401 break; /* don't try anything more for now */
403 /* we don't support any other return from twe_start */
404 twe_panic(sc, "twe_start returned nonsense");
409 /********************************************************************************
410 * Write blocks from memory to disk, for system crash dumps.
413 twe_dump_blocks(struct twe_softc *sc, int unit, u_int32_t lba, void *data, int nblks)
415 struct twe_request *tr;
419 if (twe_get_request(sc, &tr))
423 tr->tr_status = TWE_CMD_SETUP;
424 tr->tr_length = nblks * TWE_BLOCK_SIZE;
425 tr->tr_flags = TWE_CMD_DATAOUT;
427 cmd = &tr->tr_command;
428 cmd->io.opcode = TWE_OP_WRITE;
431 cmd->io.block_count = nblks;
435 error = twe_immediate_request(tr);
437 if (twe_report_request(tr))
439 twe_release_request(tr);
443 /********************************************************************************
444 * Handle controller-specific control operations.
447 twe_ioctl(struct twe_softc *sc, int cmd, void *addr)
449 struct twe_usercommand *tu = (struct twe_usercommand *)addr;
450 struct twe_paramcommand *tp = (struct twe_paramcommand *)addr;
451 union twe_statrequest *ts = (union twe_statrequest *)addr;
454 int *arg = (int *)addr;
455 struct twe_request *tr;
461 /* handle a command from userspace */
464 if (twe_get_request(sc, &tr)) {
470 * Save the command's request ID, copy the user-supplied command in,
471 * restore the request ID.
473 srid = tr->tr_command.generic.request_id;
474 bcopy(&tu->tu_command, &tr->tr_command, sizeof(TWE_Command));
475 tr->tr_command.generic.request_id = srid;
477 /* if there's a data buffer, allocate and copy it in */
478 tr->tr_length = tu->tu_size;
479 if (tr->tr_length > 0) {
480 if ((tr->tr_data = malloc(tr->tr_length, M_DEVBUF, M_WAITOK)) == NULL) {
484 if ((error = copyin(tu->tu_data, tr->tr_data, tr->tr_length)) != 0)
486 tr->tr_flags |= TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
489 /* run the command */
491 twe_wait_request(tr);
493 /* copy the command out again */
494 bcopy(&tr->tr_command, &tu->tu_command, sizeof(TWE_Command));
496 /* if there was a data buffer, copy it out */
497 if (tr->tr_length > 0)
498 error = copyout(tr->tr_data, tu->tu_data, tr->tr_length);
502 if (tr->tr_data != NULL)
503 free(tr->tr_data, M_DEVBUF);
505 twe_release_request(tr);
509 /* fetch statistics counter */
511 switch (ts->ts_item) {
512 #ifdef TWE_PERFORMANCE_MONITOR
518 bcopy(&sc->twe_qstat[ts->ts_item], &ts->ts_qstat, sizeof(struct twe_qstat));
527 /* poll for an AEN */
529 *arg = twe_dequeue_aen(sc);
534 /* wait for another AEN to show up */
537 while ((*arg = twe_dequeue_aen(sc)) == -1) {
538 error = tsleep(&sc->twe_aen_queue, PCATCH, "tweaen", 0);
545 case TWEIO_GET_PARAM:
546 if ((param = twe_get_param(sc, tp->tp_table_id, tp->tp_param_id, tp->tp_size, NULL)) == NULL) {
547 twe_printf(sc, "TWEIO_GET_PARAM failed for 0x%x/0x%x/%d\n",
548 tp->tp_table_id, tp->tp_param_id, tp->tp_size);
551 if (param->parameter_size_bytes > tp->tp_size) {
552 twe_printf(sc, "TWEIO_GET_PARAM parameter too large (%d > %d)\n",
553 param->parameter_size_bytes, tp->tp_size);
556 error = copyout(param->data, tp->tp_data, param->parameter_size_bytes);
558 free(param, M_DEVBUF);
562 case TWEIO_SET_PARAM:
563 if ((data = malloc(tp->tp_size, M_DEVBUF, M_WAITOK)) == NULL) {
566 error = copyin(tp->tp_data, data, tp->tp_size);
568 error = twe_set_param(sc, tp->tp_table_id, tp->tp_param_id, tp->tp_size, data);
569 free(data, M_DEVBUF);
577 /* XXX implement ATA PASSTHROUGH */
579 /* nothing we understand */
587 /********************************************************************************
588 * Enable the useful interrupts from the controller.
591 twe_enable_interrupts(struct twe_softc *sc)
593 sc->twe_state |= TWE_STATE_INTEN;
595 TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT |
596 TWE_CONTROL_UNMASK_RESPONSE_INTERRUPT |
597 TWE_CONTROL_ENABLE_INTERRUPTS);
600 /********************************************************************************
601 * Disable interrupts from the controller.
604 twe_disable_interrupts(struct twe_softc *sc)
606 TWE_CONTROL(sc, TWE_CONTROL_DISABLE_INTERRUPTS);
607 sc->twe_state &= ~TWE_STATE_INTEN;
610 /********************************************************************************
611 ********************************************************************************
613 ********************************************************************************
614 ********************************************************************************/
616 /********************************************************************************
617 * Read integer parameter table entries.
620 twe_get_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t *result)
624 if ((param = twe_get_param(sc, table_id, param_id, 1, NULL)) == NULL)
626 *result = *(u_int8_t *)param->data;
627 free(param, M_DEVBUF);
632 twe_get_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t *result)
636 if ((param = twe_get_param(sc, table_id, param_id, 2, NULL)) == NULL)
638 *result = *(u_int16_t *)param->data;
639 free(param, M_DEVBUF);
644 twe_get_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t *result)
648 if ((param = twe_get_param(sc, table_id, param_id, 4, NULL)) == NULL)
650 *result = *(u_int32_t *)param->data;
651 free(param, M_DEVBUF);
655 /********************************************************************************
656 * Perform a TWE_OP_GET_PARAM command. If a callback function is provided, it
657 * will be called with the command when it's completed. If no callback is
658 * provided, we will wait for the command to complete and then return just the data.
659 * The caller is responsible for freeing the data when done with it.
662 twe_get_param(struct twe_softc *sc, int table_id, int param_id, size_t param_size,
663 void (* func)(struct twe_request *tr))
665 struct twe_request *tr;
676 if (twe_get_request(sc, &tr))
680 if ((param = (TWE_Param *)malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT)) == NULL)
683 tr->tr_length = TWE_SECTOR_SIZE;
684 tr->tr_flags = TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
686 /* build the command for the controller */
687 cmd = &tr->tr_command;
688 cmd->param.opcode = TWE_OP_GET_PARAM;
691 cmd->param.param_count = 1;
693 /* map the command/data into controller-visible space */
696 /* fill in the outbound parameter data */
697 param->table_id = table_id;
698 param->parameter_id = param_id;
699 param->parameter_size_bytes = param_size;
701 /* submit the command and either wait or let the callback handle it */
703 /* XXX could use twe_wait_request here if interrupts were enabled? */
704 error = twe_immediate_request(tr);
706 if (twe_report_request(tr))
709 twe_release_request(tr);
712 tr->tr_complete = func;
713 error = twe_start(tr);
718 /* something failed */
722 twe_release_request(tr);
724 free(param, M_DEVBUF);
728 /********************************************************************************
729 * Set integer parameter table entries.
731 #ifdef TWE_SHUTDOWN_NOTIFICATION
733 twe_set_param_1(struct twe_softc *sc, int table_id, int param_id, u_int8_t value)
735 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
741 twe_set_param_2(struct twe_softc *sc, int table_id, int param_id, u_int16_t value)
743 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
747 twe_set_param_4(struct twe_softc *sc, int table_id, int param_id, u_int32_t value)
749 return(twe_set_param(sc, table_id, param_id, sizeof(value), &value));
753 /********************************************************************************
754 * Perform a TWE_OP_SET_PARAM command, returns nonzero on error.
757 twe_set_param(struct twe_softc *sc, int table_id, int param_id, int param_size, void *data)
759 struct twe_request *tr;
771 if (twe_get_request(sc, &tr))
775 if ((param = (TWE_Param *)malloc(TWE_SECTOR_SIZE, M_DEVBUF, M_NOWAIT)) == NULL)
778 tr->tr_length = TWE_SECTOR_SIZE;
779 tr->tr_flags = TWE_CMD_DATAIN | TWE_CMD_DATAOUT;
781 /* build the command for the controller */
782 cmd = &tr->tr_command;
783 cmd->param.opcode = TWE_OP_SET_PARAM;
786 cmd->param.param_count = 1;
788 /* map the command/data into controller-visible space */
791 /* fill in the outbound parameter data */
792 param->table_id = table_id;
793 param->parameter_id = param_id;
794 param->parameter_size_bytes = param_size;
795 bcopy(data, param->data, param_size);
797 /* XXX could use twe_wait_request here if interrupts were enabled? */
798 error = twe_immediate_request(tr);
800 if (twe_report_request(tr))
806 twe_release_request(tr);
808 free(param, M_DEVBUF);
812 /********************************************************************************
813 * Perform a TWE_OP_INIT_CONNECTION command, returns nonzero on error.
815 * Typically called with interrupts disabled.
818 twe_init_connection(struct twe_softc *sc, int mode)
820 struct twe_request *tr;
827 if (twe_get_request(sc, &tr))
830 /* build the command */
831 cmd = &tr->tr_command;
832 cmd->initconnection.opcode = TWE_OP_INIT_CONNECTION;
833 cmd->initconnection.size = 3;
834 cmd->initconnection.host_id = 0;
835 cmd->initconnection.message_credits = mode;
836 cmd->initconnection.response_queue_pointer = 0;
838 /* map the command into controller-visible space */
841 /* submit the command */
842 error = twe_immediate_request(tr);
843 /* XXX check command result? */
844 twe_unmap_request(tr);
845 twe_release_request(tr);
847 if (mode == TWE_INIT_MESSAGE_CREDITS)
848 sc->twe_host_id = cmd->initconnection.host_id;
852 /********************************************************************************
853 * Start the command (tr) and sleep waiting for it to complete.
855 * Successfully completed commands are dequeued.
858 twe_wait_request(struct twe_request *tr)
864 tr->tr_flags |= TWE_CMD_SLEEPER;
865 tr->tr_status = TWE_CMD_BUSY;
866 twe_enqueue_ready(tr);
867 twe_startio(tr->tr_sc);
869 while (tr->tr_status == TWE_CMD_BUSY)
870 tsleep(tr, 0, "twewait", 0);
876 /********************************************************************************
877 * Start the command (tr) and busy-wait for it to complete.
878 * This should only be used when interrupts are actually disabled (although it
879 * will work if they are not).
882 twe_immediate_request(struct twe_request *tr)
890 if ((error = twe_start(tr)) != 0)
892 while (tr->tr_status == TWE_CMD_BUSY){
895 return(tr->tr_status != TWE_CMD_COMPLETE);
898 /********************************************************************************
899 * Handle completion of an I/O command.
902 twe_completeio(struct twe_request *tr)
904 struct twe_softc *sc = tr->tr_sc;
905 twe_bio *bp = (twe_bio *)tr->tr_private;
909 if (tr->tr_status == TWE_CMD_COMPLETE) {
911 if (twe_report_request(tr))
912 TWE_BIO_SET_ERROR(bp, EIO);
915 twe_panic(sc, "twe_completeio on incomplete command");
917 tr->tr_private = NULL;
919 twe_release_request(tr);
922 /********************************************************************************
923 * Reset the controller and pull all the active commands back onto the ready
924 * queue. Used to restart a controller that's exhibiting bad behaviour.
927 twe_reset(struct twe_softc *sc)
929 struct twe_request *tr;
933 * Sleep for a short period to allow AENs to be signalled.
935 tsleep(NULL, 0, "twereset", hz);
938 * Disable interrupts from the controller, and mask any accidental entry
939 * into our interrupt handler.
941 twe_printf(sc, "controller reset in progress...\n");
942 twe_disable_interrupts(sc);
946 * Try to soft-reset the controller.
948 for (i = 0; i < TWE_MAX_RESET_TRIES; i++) {
951 twe_printf(sc, "reset %d failed, trying again\n", i);
953 if (!twe_soft_reset(sc))
954 break; /* reset process complete */
956 /* did we give up? */
957 if (i >= TWE_MAX_RESET_TRIES) {
958 twe_printf(sc, "can't reset controller, giving up\n");
963 * Move all of the commands that were busy back to the ready queue.
966 while ((tr = twe_dequeue_busy(sc)) != NULL) {
967 twe_enqueue_ready(tr);
972 * Kick the controller to start things going again, then re-enable interrupts.
975 twe_enable_interrupts(sc);
976 twe_printf(sc, "controller reset done, %d commands restarted\n", i);
980 twe_enable_interrupts(sc);
983 /********************************************************************************
984 ********************************************************************************
985 Command I/O to Controller
986 ********************************************************************************
987 ********************************************************************************/
989 /********************************************************************************
990 * Try to deliver (tr) to the controller.
992 * Can be called at any interrupt level, with or without interrupts enabled.
995 twe_start(struct twe_request *tr)
997 struct twe_softc *sc = tr->tr_sc;
999 u_int32_t status_reg;
1003 /* mark the command as currently being processed */
1004 tr->tr_status = TWE_CMD_BUSY;
1007 * Spin briefly waiting for the controller to come ready
1009 * XXX it might be more efficient to return EBUSY immediately
1010 * and let the command be rescheduled.
1012 for (i = 100000, done = 0; (i > 0) && !done; i--) {
1015 /* check to see if we can post a command */
1016 status_reg = TWE_STATUS(sc);
1017 twe_check_bits(sc, status_reg);
1019 if (!(status_reg & TWE_STATUS_COMMAND_QUEUE_FULL)) {
1020 TWE_COMMAND_QUEUE(sc, tr->tr_cmdphys);
1022 /* move command to work queue */
1023 twe_enqueue_busy(tr);
1025 if (tr->tr_complete != NULL) {
1026 debug(3, "queued request %d with callback %p", tr->tr_command.generic.request_id, tr->tr_complete);
1027 } else if (tr->tr_flags & TWE_CMD_SLEEPER) {
1028 debug(3, "queued request %d with wait channel %p", tr->tr_command.generic.request_id, tr);
1030 debug(3, "queued request %d for polling caller", tr->tr_command.generic.request_id);
1034 splx(s); /* drop spl to allow completion interrupts */
1037 /* command is enqueued */
1042 * We couldn't get the controller to take the command; try submitting it again later.
1043 * This should only happen if something is wrong with the controller, or if we have
1044 * overestimated the number of commands it can accept. (Should we actually reject
1045 * the command at this point?)
1050 /********************************************************************************
1051 * Poll the controller (sc) for completed commands.
1053 * Can be called at any interrupt level, with or without interrupts enabled.
1056 twe_done(struct twe_softc *sc)
1058 TWE_Response_Queue rq;
1059 struct twe_request *tr;
1061 u_int32_t status_reg;
1065 /* loop collecting completed commands */
1069 status_reg = TWE_STATUS(sc);
1070 twe_check_bits(sc, status_reg); /* XXX should this fail? */
1072 if (!(status_reg & TWE_STATUS_RESPONSE_QUEUE_EMPTY)) {
1074 rq = TWE_RESPONSE_QUEUE(sc);
1075 tr = sc->twe_lookup[rq.u.response_id]; /* find command */
1076 if (tr->tr_status != TWE_CMD_BUSY)
1077 twe_printf(sc, "completion event for nonbusy command\n");
1078 tr->tr_status = TWE_CMD_COMPLETE;
1079 debug(3, "completed request id %d with status %d",
1080 tr->tr_command.generic.request_id, tr->tr_command.generic.status);
1081 /* move to completed queue */
1082 twe_remove_busy(tr);
1083 twe_enqueue_complete(tr);
1085 break; /* no response ready */
1090 /* if we've completed any commands, try posting some more */
1094 /* handle completion and timeouts */
1095 twe_complete(sc); /* XXX use deferred completion? */
1098 /********************************************************************************
1099 * Perform post-completion processing for commands on (sc).
1101 * This is split from twe_done as it can be safely deferred and run at a lower
1102 * priority level should facilities for such a thing become available.
1105 twe_complete(struct twe_softc *sc)
1107 struct twe_request *tr;
1112 * Pull commands off the completed list, dispatch them appropriately
1114 while ((tr = twe_dequeue_complete(sc)) != NULL) {
1116 /* unmap the command's data buffer */
1117 twe_unmap_request(tr);
1119 /* dispatch to suit command originator */
1120 if (tr->tr_complete != NULL) { /* completion callback */
1121 debug(2, "call completion handler %p", tr->tr_complete);
1122 tr->tr_complete(tr);
1124 } else if (tr->tr_flags & TWE_CMD_SLEEPER) { /* caller is asleep waiting */
1125 debug(2, "wake up command owner on %p", tr);
1128 } else { /* caller is polling command */
1129 debug(2, "command left for owner");
1134 /********************************************************************************
1135 * Wait for (status) to be set in the controller status register for up to
1136 * (timeout) seconds. Returns 0 if found, nonzero if we time out.
1138 * Note: this busy-waits, rather than sleeping, since we may be called with
1139 * eg. clock interrupts masked.
1142 twe_wait_status(struct twe_softc *sc, u_int32_t status, int timeout)
1145 u_int32_t status_reg;
1149 expiry = time_second + timeout;
1152 status_reg = TWE_STATUS(sc);
1153 if (status_reg & status) /* got the required bit(s)? */
1156 } while (time_second <= expiry);
1161 /********************************************************************************
1162 * Drain the response queue, which may contain responses to commands we know
1166 twe_drain_response_queue(struct twe_softc *sc)
1168 TWE_Response_Queue rq;
1169 u_int32_t status_reg;
1173 for (;;) { /* XXX give up eventually? */
1174 status_reg = TWE_STATUS(sc);
1175 if (twe_check_bits(sc, status_reg))
1177 if (status_reg & TWE_STATUS_RESPONSE_QUEUE_EMPTY)
1179 rq = TWE_RESPONSE_QUEUE(sc);
1183 /********************************************************************************
1184 * Soft-reset the controller
1187 twe_soft_reset(struct twe_softc *sc)
1189 u_int32_t status_reg;
1195 if (twe_wait_status(sc, TWE_STATUS_ATTENTION_INTERRUPT, 30)) {
1196 twe_printf(sc, "no attention interrupt\n");
1199 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT);
1200 if (twe_drain_aen_queue(sc)) {
1201 twe_printf(sc, "can't drain AEN queue\n");
1204 if (twe_find_aen(sc, TWE_AEN_SOFT_RESET)) {
1205 twe_printf(sc, "reset not reported\n");
1208 status_reg = TWE_STATUS(sc);
1209 if (TWE_STATUS_ERRORS(status_reg) || twe_check_bits(sc, status_reg)) {
1210 twe_printf(sc, "controller errors detected\n");
1213 if (twe_drain_response_queue(sc)) {
1214 twe_printf(sc, "can't drain response queue\n");
1220 /********************************************************************************
1221 ********************************************************************************
1223 ********************************************************************************
1224 ********************************************************************************/
1226 /********************************************************************************
1229 * XXX what does this mean?
1232 twe_host_intr(struct twe_softc *sc)
1236 twe_printf(sc, "host interrupt\n");
1237 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_HOST_INTERRUPT);
1240 /********************************************************************************
1241 * Attention interrupt.
1243 * Signalled when the controller has one or more AENs for us.
1246 twe_attention_intr(struct twe_softc *sc)
1250 /* instigate a poll for AENs */
1251 if (twe_fetch_aen(sc)) {
1252 twe_printf(sc, "error polling for signalled AEN\n");
1254 TWE_CONTROL(sc, TWE_CONTROL_CLEAR_ATTENTION_INTERRUPT);
1258 /********************************************************************************
1259 * Command interrupt.
1261 * Signalled when the controller can handle more commands.
1264 twe_command_intr(struct twe_softc *sc)
1269 * We don't use this, rather we try to submit commands when we receive
1270 * them, and when other commands have completed. Mask it so we don't get
1273 twe_printf(sc, "command interrupt\n");
1274 TWE_CONTROL(sc, TWE_CONTROL_MASK_COMMAND_INTERRUPT);
1277 /********************************************************************************
1278 ********************************************************************************
1279 Asynchronous Event Handling
1280 ********************************************************************************
1281 ********************************************************************************/
1283 /********************************************************************************
1284 * Request an AEN from the controller.
1287 twe_fetch_aen(struct twe_softc *sc)
1292 if ((twe_get_param(sc, TWE_PARAM_AEN, TWE_PARAM_AEN_UnitCode, 2, twe_handle_aen)) == NULL)
1297 /********************************************************************************
1298 * Handle an AEN returned by the controller.
1301 twe_handle_aen(struct twe_request *tr)
1303 struct twe_softc *sc = tr->tr_sc;
1309 /* XXX check for command success somehow? */
1311 param = (TWE_Param *)tr->tr_data;
1312 aen = *(u_int16_t *)(param->data);
1314 free(tr->tr_data, M_DEVBUF);
1315 twe_release_request(tr);
1316 twe_enqueue_aen(sc, aen);
1318 /* XXX poll for more AENs? */
1321 /********************************************************************************
1322 * Pull AENs out of the controller and park them in the queue, in a context where
1323 * interrupts aren't active. Return nonzero if we encounter any errors in the
1324 * process of obtaining all the available AENs.
1327 twe_drain_aen_queue(struct twe_softc *sc)
1332 if (twe_get_param_2(sc, TWE_PARAM_AEN, TWE_PARAM_AEN_UnitCode, &aen))
1334 if (aen == TWE_AEN_QUEUE_EMPTY)
1336 twe_enqueue_aen(sc, aen);
1340 /********************************************************************************
1341 * Push an AEN that we've received onto the queue.
1343 * Note that we have to lock this against reentrance, since it may be called
1344 * from both interrupt and non-interrupt context.
1346 * If someone is waiting for the AEN we have, wake them up.
1349 twe_enqueue_aen(struct twe_softc *sc, u_int16_t aen)
1352 int s, next, nextnext;
1356 if ((msg = twe_format_aen(sc, aen)) != NULL)
1357 twe_printf(sc, "AEN: <%s>\n", msg);
1360 /* enqueue the AEN */
1361 next = ((sc->twe_aen_head + 1) % TWE_Q_LENGTH);
1362 nextnext = ((sc->twe_aen_head + 2) % TWE_Q_LENGTH);
1364 /* check to see if this is the last free slot, and subvert the AEN if it is */
1365 if (nextnext == sc->twe_aen_tail)
1366 aen = TWE_AEN_QUEUE_FULL;
1368 /* look to see if there's room for this AEN */
1369 if (next != sc->twe_aen_tail) {
1370 sc->twe_aen_queue[sc->twe_aen_head] = aen;
1371 sc->twe_aen_head = next;
1374 /* wake up anyone asleep on the queue */
1375 wakeup(&sc->twe_aen_queue);
1377 /* anyone looking for this AEN? */
1378 if (sc->twe_wait_aen == aen) {
1379 sc->twe_wait_aen = -1;
1380 wakeup(&sc->twe_wait_aen);
1385 /********************************************************************************
1386 * Pop an AEN off the queue, or return -1 if there are none left.
1388 * We are more or less interrupt-safe, so don't block interrupts.
1391 twe_dequeue_aen(struct twe_softc *sc)
1397 if (sc->twe_aen_tail == sc->twe_aen_head) {
1400 result = sc->twe_aen_queue[sc->twe_aen_tail];
1401 sc->twe_aen_tail = ((sc->twe_aen_tail + 1) % TWE_Q_LENGTH);
1406 /********************************************************************************
1407 * Check to see if the requested AEN is in the queue.
1409 * XXX we could probably avoid masking interrupts here
1412 twe_find_aen(struct twe_softc *sc, u_int16_t aen)
1418 for (i = sc->twe_aen_tail; (i != sc->twe_aen_head) && missing; i = (i + 1) % TWE_Q_LENGTH) {
1419 if (sc->twe_aen_queue[i] == aen)
1427 #if 0 /* currently unused */
1428 /********************************************************************************
1429 * Sleep waiting for at least (timeout) seconds until we see (aen) as
1430 * requested. Returns nonzero on timeout or failure.
1432 * XXX: this should not be used in cases where there may be more than one sleeper
1433 * without a mechanism for registering multiple sleepers.
1436 twe_wait_aen(struct twe_softc *sc, int aen, int timeout)
1443 expiry = time_second + timeout;
1447 sc->twe_wait_aen = aen;
1450 tsleep(&sc->twe_wait_aen, 0, "twewaen", hz);
1451 if (sc->twe_wait_aen == -1)
1453 } while ((time_second <= expiry) && !found);
1459 /********************************************************************************
1460 ********************************************************************************
1461 Command Buffer Management
1462 ********************************************************************************
1463 ********************************************************************************/
1465 /********************************************************************************
1466 * Get a new command buffer.
1468 * This will return NULL if all command buffers are in use.
1471 twe_get_request(struct twe_softc *sc, struct twe_request **tr)
1475 /* try to reuse an old buffer */
1476 *tr = twe_dequeue_free(sc);
1478 /* initialise some fields to their defaults */
1480 (*tr)->tr_data = NULL;
1481 (*tr)->tr_private = NULL;
1482 (*tr)->tr_status = TWE_CMD_SETUP; /* command is in setup phase */
1483 (*tr)->tr_flags = 0;
1484 (*tr)->tr_complete = NULL;
1485 (*tr)->tr_command.generic.status = 0; /* before submission to controller */
1486 (*tr)->tr_command.generic.flags = 0; /* not used */
1488 return(*tr == NULL);
1491 /********************************************************************************
1492 * Release a command buffer for reuse.
1496 twe_release_request(struct twe_request *tr)
1500 if (tr->tr_private != NULL)
1501 twe_panic(tr->tr_sc, "tr_private != NULL");
1502 twe_enqueue_free(tr);
1505 /********************************************************************************
1506 ********************************************************************************
1508 ********************************************************************************
1509 ********************************************************************************/
1511 /********************************************************************************
1512 * Print some information about the controller
1515 twe_describe_controller(struct twe_softc *sc)
1524 /* get the port count */
1525 twe_get_param_1(sc, TWE_PARAM_CONTROLLER, TWE_PARAM_CONTROLLER_PortCount, &ports);
1527 /* get version strings */
1528 p[0] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_Mon, 16, NULL);
1529 p[1] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_FW, 16, NULL);
1530 p[2] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_BIOS, 16, NULL);
1531 p[3] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCB, 8, NULL);
1532 p[4] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_ATA, 8, NULL);
1533 p[5] = twe_get_param(sc, TWE_PARAM_VERSION, TWE_PARAM_VERSION_PCI, 8, NULL);
1535 twe_printf(sc, "%d ports, Firmware %.16s, BIOS %.16s\n", ports, p[1]->data, p[2]->data);
1537 twe_printf(sc, "Monitor %.16s, PCB %.8s, Achip %.8s, Pchip %.8s\n", p[0]->data, p[3]->data,
1538 p[4]->data, p[5]->data);
1539 free(p[0], M_DEVBUF);
1540 free(p[1], M_DEVBUF);
1541 free(p[2], M_DEVBUF);
1542 free(p[3], M_DEVBUF);
1543 free(p[4], M_DEVBUF);
1544 free(p[5], M_DEVBUF);
1546 /* print attached drives */
1548 p[0] = twe_get_param(sc, TWE_PARAM_DRIVESUMMARY, TWE_PARAM_DRIVESUMMARY_Status, 16, NULL);
1549 for (i = 0; i < ports; i++) {
1550 if (p[0]->data[i] != TWE_PARAM_DRIVESTATUS_Present)
1552 twe_get_param_4(sc, TWE_PARAM_DRIVEINFO + i, TWE_PARAM_DRIVEINFO_Size, &size);
1553 p[1] = twe_get_param(sc, TWE_PARAM_DRIVEINFO + i, TWE_PARAM_DRIVEINFO_Model, 40, NULL);
1555 twe_printf(sc, "port %d: %.40s %dMB\n", i, p[1]->data, size / 2048);
1556 free(p[1], M_DEVBUF);
1558 twe_printf(sc, "port %d, drive status unavailable\n", i);
1561 free(p[0], M_DEVBUF);
1565 /********************************************************************************
1566 * Complain if the status bits aren't what we're expecting.
1568 * Rate-limit the complaints to at most one of each every five seconds, but
1569 * always return the correct status.
1572 twe_check_bits(struct twe_softc *sc, u_int32_t status_reg)
1575 static time_t lastwarn[2] = {0, 0};
1578 * This can be a little problematic, as twe_panic may call twe_reset if
1579 * TWE_DEBUG is not set, which will call us again as part of the soft reset.
1581 if ((status_reg & TWE_STATUS_PANIC_BITS) != 0) {
1582 twe_printf(sc, "FATAL STATUS BIT(S) %b\n", status_reg & TWE_STATUS_PANIC_BITS,
1583 TWE_STATUS_BITS_DESCRIPTION);
1584 twe_panic(sc, "fatal status bits");
1588 if ((status_reg & TWE_STATUS_EXPECTED_BITS) != TWE_STATUS_EXPECTED_BITS) {
1589 if (time_second > (lastwarn[0] + 5)) {
1590 twe_printf(sc, "missing expected status bit(s) %b\n", ~status_reg & TWE_STATUS_EXPECTED_BITS,
1591 TWE_STATUS_BITS_DESCRIPTION);
1592 lastwarn[0] = time_second;
1597 if ((status_reg & TWE_STATUS_UNEXPECTED_BITS) != 0) {
1598 if (time_second > (lastwarn[1] + 5)) {
1599 twe_printf(sc, "unexpected status bit(s) %b\n", status_reg & TWE_STATUS_UNEXPECTED_BITS,
1600 TWE_STATUS_BITS_DESCRIPTION);
1601 lastwarn[1] = time_second;
1604 if (status_reg & TWE_STATUS_PCI_PARITY_ERROR) {
1605 twe_printf(sc, "PCI parity error: Reseat card, move card or buggy device present.");
1606 twe_clear_pci_parity_error(sc);
1608 if (status_reg & TWE_STATUS_PCI_ABORT) {
1609 twe_printf(sc, "PCI abort, clearing.");
1610 twe_clear_pci_abort(sc);
1617 /********************************************************************************
1618 * Return a string describing (aen).
1620 * The low 8 bits of the aen are the code, the high 8 bits give the unit number
1621 * where an AEN is specific to a unit.
1623 * Note that we could expand this routine to handle eg. up/downgrading the status
1624 * of a drive if we had some idea of what the drive's initial status was.
1628 twe_format_aen(struct twe_softc *sc, u_int16_t aen)
1630 static char buf[80];
1634 code = twe_describe_code(twe_table_aen, TWE_AEN_CODE(aen));
1646 if ((child = sc->twe_drive[TWE_AEN_UNIT(aen)].td_disk) != NULL) {
1647 sprintf(buf, "twed%d: %s", device_get_unit(child), msg);
1649 sprintf(buf, "twe%d: %s for unknown unit %d", device_get_unit(sc->twe_dev),
1650 msg, TWE_AEN_UNIT(aen));
1655 sprintf(buf, "twe%d: port %d: %s", device_get_unit(sc->twe_dev), TWE_AEN_UNIT(aen),
1664 sprintf(buf, "unknown AEN 0x%x", aen);
1668 /********************************************************************************
1669 * Print a diagnostic if the status of the command warrants it, and return
1670 * either zero (command was ok) or nonzero (command failed).
1673 twe_report_request(struct twe_request *tr)
1675 struct twe_softc *sc = tr->tr_sc;
1676 TWE_Command *cmd = &tr->tr_command;
1680 * Check the command status value and handle accordingly.
1682 if (cmd->generic.status == TWE_STATUS_RESET) {
1684 * The status code 0xff requests a controller reset.
1686 twe_printf(sc, "command returned with controller rest request\n");
1689 } else if (cmd->generic.status > TWE_STATUS_FATAL) {
1691 * Fatal errors that don't require controller reset.
1693 * We know a few special flags values.
1695 switch (cmd->generic.flags) {
1697 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1701 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1702 "unrecoverable drive error");
1705 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1706 "controller error - %s (flags = 0x%x)\n",
1707 twe_describe_code(twe_table_status, cmd->generic.status),
1708 cmd->generic.flags);
1711 } else if (cmd->generic.status > TWE_STATUS_WARNING) {
1713 * Warning level status.
1715 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1716 "warning - %s (flags = 0x%x)\n",
1717 twe_describe_code(twe_table_status, cmd->generic.status),
1718 cmd->generic.flags);
1719 } else if (cmd->generic.status > 0x40) {
1721 * Info level status.
1723 device_printf(sc->twe_drive[cmd->generic.unit].td_disk,
1724 "attention - %s (flags = 0x%x)\n",
1725 twe_describe_code(twe_table_status, cmd->generic.status),
1726 cmd->generic.flags);
1732 /********************************************************************************
1733 * Print some controller state to aid in debugging error/panic conditions
1736 twe_print_controller(struct twe_softc *sc)
1738 u_int32_t status_reg;
1740 status_reg = TWE_STATUS(sc);
1741 twe_printf(sc, "status %b\n", status_reg, TWE_STATUS_BITS_DESCRIPTION);
1742 twe_printf(sc, " current max\n");
1743 twe_printf(sc, "free %04d %04d\n", sc->twe_qstat[TWEQ_FREE].q_length, sc->twe_qstat[TWEQ_FREE].q_max);
1744 twe_printf(sc, "ready %04d %04d\n", sc->twe_qstat[TWEQ_READY].q_length, sc->twe_qstat[TWEQ_READY].q_max);
1745 twe_printf(sc, "busy %04d %04d\n", sc->twe_qstat[TWEQ_BUSY].q_length, sc->twe_qstat[TWEQ_BUSY].q_max);
1746 twe_printf(sc, "complete %04d %04d\n", sc->twe_qstat[TWEQ_COMPLETE].q_length, sc->twe_qstat[TWEQ_COMPLETE].q_max);
1747 twe_printf(sc, "bioq %04d %04d\n", sc->twe_qstat[TWEQ_BIO].q_length, sc->twe_qstat[TWEQ_BIO].q_max);
1748 twe_printf(sc, "AEN queue head %d tail %d\n", sc->twe_aen_head, sc->twe_aen_tail);
1752 twe_panic(struct twe_softc *sc, char *reason)
1754 twe_print_controller(sc);
1763 /********************************************************************************
1764 * Print a request/command in human-readable format.
1767 twe_print_request(struct twe_request *tr)
1769 struct twe_softc *sc = tr->tr_sc;
1770 TWE_Command *cmd = &tr->tr_command;
1773 twe_printf(sc, "CMD: request_id %d opcode <%s> size %d unit %d host_id %d\n",
1774 cmd->generic.request_id, twe_describe_code(twe_table_opcode, cmd->generic.opcode), cmd->generic.size,
1775 cmd->generic.unit, cmd->generic.host_id);
1776 twe_printf(sc, " status %d flags 0x%x count %d sgl_offset %d\n",
1777 cmd->generic.status, cmd->generic.flags, cmd->generic.count, cmd->generic.sgl_offset);
1779 switch(cmd->generic.opcode) { /* XXX add more opcodes? */
1782 twe_printf(sc, " lba %d\n", cmd->io.lba);
1783 for (i = 0; (i < TWE_MAX_SGL_LENGTH) && (cmd->io.sgl[i].length != 0); i++)
1784 twe_printf(sc, " %d: 0x%x/%d\n",
1785 i, cmd->io.sgl[i].address, cmd->io.sgl[i].length);
1788 case TWE_OP_GET_PARAM:
1789 case TWE_OP_SET_PARAM:
1790 for (i = 0; (i < TWE_MAX_SGL_LENGTH) && (cmd->param.sgl[i].length != 0); i++)
1791 twe_printf(sc, " %d: 0x%x/%d\n",
1792 i, cmd->param.sgl[i].address, cmd->param.sgl[i].length);
1795 case TWE_OP_INIT_CONNECTION:
1796 twe_printf(sc, " response queue pointer 0x%x\n",
1797 cmd->initconnection.response_queue_pointer);
1803 twe_printf(sc, " tr_command %p/0x%x tr_data %p/0x%x,%d\n",
1804 tr, tr->tr_cmdphys, tr->tr_data, tr->tr_dataphys, tr->tr_length);
1805 twe_printf(sc, " tr_status %d tr_flags 0x%x tr_complete %p tr_private %p\n",
1806 tr->tr_status, tr->tr_flags, tr->tr_complete, tr->tr_private);