1 /*-
2 * Generic register and struct definitions for the Adaptech 154x
3 * SCSI host adapters. Product specific probe and attach routines can
4 * be found in:
5 * aha 1542A/1542B/1542C/1542CF/1542CP aha_isa.c
6 */
7 /*-
8 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
9 *
10 * Copyright (c) 1998 M. Warner Losh.
11 * All Rights Reserved.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * Derived from bt.c written by:
35 *
36 * Copyright (c) 1998 Justin T. Gibbs.
37 * All rights reserved.
38 *
39 * Redistribution and use in source and binary forms, with or without
40 * modification, are permitted provided that the following conditions
41 * are met:
42 * 1. Redistributions of source code must retain the above copyright
43 * notice, this list of conditions, and the following disclaimer,
44 * without modification, immediately at the beginning of the file.
45 * 2. The name of the author may not be used to endorse or promote products
46 * derived from this software without specific prior written permission.
47 *
48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
52 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 * SUCH DAMAGE.
59 */
60
61 #include <sys/cdefs.h>
62 __FBSDID("$FreeBSD$");
63
64 #include <sys/param.h>
65 #include <sys/conf.h>
66 #include <sys/bus.h>
67 #include <sys/systm.h>
68 #include <sys/malloc.h>
69 #include <sys/kernel.h>
70 #include <sys/lock.h>
71 #include <sys/module.h>
72 #include <sys/mutex.h>
73 #include <sys/rman.h>
74
75 #include <machine/bus.h>
76
77 #include <cam/cam.h>
78 #include <cam/cam_ccb.h>
79 #include <cam/cam_sim.h>
80 #include <cam/cam_xpt_sim.h>
81 #include <cam/cam_debug.h>
82
83 #include <cam/scsi/scsi_message.h>
84
85 #include <dev/aha/ahareg.h>
86
87 #define PRVERB(x) do { if (bootverbose) device_printf x; } while (0)
88
89 /* Macro to determine that a rev is potentially a new valid one
90 * so that the driver doesn't keep breaking on new revs as it
91 * did for the CF and CP.
92 */
93 #define PROBABLY_NEW_BOARD(REV) (REV > 0x43 && REV < 0x56)
94
95 /* MailBox Management functions */
96 static __inline void ahanextinbox(struct aha_softc *aha);
97 static __inline void ahanextoutbox(struct aha_softc *aha);
98
99 #define aha_name(aha) device_get_nameunit(aha->dev)
100
101 static __inline void
ahanextinbox(struct aha_softc * aha)102 ahanextinbox(struct aha_softc *aha)
103 {
104 if (aha->cur_inbox == aha->last_inbox)
105 aha->cur_inbox = aha->in_boxes;
106 else
107 aha->cur_inbox++;
108 }
109
110 static __inline void
ahanextoutbox(struct aha_softc * aha)111 ahanextoutbox(struct aha_softc *aha)
112 {
113 if (aha->cur_outbox == aha->last_outbox)
114 aha->cur_outbox = aha->out_boxes;
115 else
116 aha->cur_outbox++;
117 }
118
119 #define ahautoa24(u,s3) \
120 (s3)[0] = ((u) >> 16) & 0xff; \
121 (s3)[1] = ((u) >> 8) & 0xff; \
122 (s3)[2] = (u) & 0xff;
123
124 #define aha_a24tou(s3) \
125 (((s3)[0] << 16) | ((s3)[1] << 8) | (s3)[2])
126
127 /* CCB Management functions */
128 static __inline uint32_t ahaccbvtop(struct aha_softc *aha,
129 struct aha_ccb *accb);
130 static __inline struct aha_ccb* ahaccbptov(struct aha_softc *aha,
131 uint32_t ccb_addr);
132
133 static __inline uint32_t
ahaccbvtop(struct aha_softc * aha,struct aha_ccb * accb)134 ahaccbvtop(struct aha_softc *aha, struct aha_ccb *accb)
135 {
136 return (aha->aha_ccb_physbase
137 + (uint32_t)((caddr_t)accb - (caddr_t)aha->aha_ccb_array));
138 }
139 static __inline struct aha_ccb *
ahaccbptov(struct aha_softc * aha,uint32_t ccb_addr)140 ahaccbptov(struct aha_softc *aha, uint32_t ccb_addr)
141 {
142 return (aha->aha_ccb_array +
143 + ((struct aha_ccb*)(uintptr_t)ccb_addr -
144 (struct aha_ccb*)(uintptr_t)aha->aha_ccb_physbase));
145 }
146
147 static struct aha_ccb* ahagetccb(struct aha_softc *aha);
148 static __inline void ahafreeccb(struct aha_softc *aha, struct aha_ccb *accb);
149 static void ahaallocccbs(struct aha_softc *aha);
150 static bus_dmamap_callback_t ahaexecuteccb;
151 static void ahadone(struct aha_softc *aha, struct aha_ccb *accb,
152 aha_mbi_comp_code_t comp_code);
153 static void aha_intr_locked(struct aha_softc *aha);
154
155 /* Host adapter command functions */
156 static int ahareset(struct aha_softc* aha, int hard_reset);
157
158 /* Initialization functions */
159 static int ahainitmboxes(struct aha_softc *aha);
160 static bus_dmamap_callback_t ahamapmboxes;
161 static bus_dmamap_callback_t ahamapccbs;
162 static bus_dmamap_callback_t ahamapsgs;
163
164 /* Transfer Negotiation Functions */
165 static void ahafetchtransinfo(struct aha_softc *aha,
166 struct ccb_trans_settings *cts);
167
168 /* CAM SIM entry points */
169 #define ccb_accb_ptr spriv_ptr0
170 #define ccb_aha_ptr spriv_ptr1
171 static void ahaaction(struct cam_sim *sim, union ccb *ccb);
172 static void ahapoll(struct cam_sim *sim);
173
174 /* Our timeout handler */
175 static void ahatimeout(void *arg);
176
177 /* Exported functions */
178 void
aha_alloc(struct aha_softc * aha)179 aha_alloc(struct aha_softc *aha)
180 {
181
182 SLIST_INIT(&aha->free_aha_ccbs);
183 LIST_INIT(&aha->pending_ccbs);
184 SLIST_INIT(&aha->sg_maps);
185 aha->ccb_sg_opcode = INITIATOR_SG_CCB_WRESID;
186 aha->ccb_ccb_opcode = INITIATOR_CCB_WRESID;
187 mtx_init(&aha->lock, "aha", NULL, MTX_DEF);
188 }
189
190 void
aha_free(struct aha_softc * aha)191 aha_free(struct aha_softc *aha)
192 {
193 switch (aha->init_level) {
194 default:
195 case 8:
196 {
197 struct sg_map_node *sg_map;
198
199 while ((sg_map = SLIST_FIRST(&aha->sg_maps))!= NULL) {
200 SLIST_REMOVE_HEAD(&aha->sg_maps, links);
201 bus_dmamap_unload(aha->sg_dmat, sg_map->sg_dmamap);
202 bus_dmamem_free(aha->sg_dmat, sg_map->sg_vaddr,
203 sg_map->sg_dmamap);
204 free(sg_map, M_DEVBUF);
205 }
206 bus_dma_tag_destroy(aha->sg_dmat);
207 }
208 case 7:
209 bus_dmamap_unload(aha->ccb_dmat, aha->ccb_dmamap);
210 case 6:
211 bus_dmamem_free(aha->ccb_dmat, aha->aha_ccb_array,
212 aha->ccb_dmamap);
213 case 5:
214 bus_dma_tag_destroy(aha->ccb_dmat);
215 case 4:
216 bus_dmamap_unload(aha->mailbox_dmat, aha->mailbox_dmamap);
217 case 3:
218 bus_dmamem_free(aha->mailbox_dmat, aha->in_boxes,
219 aha->mailbox_dmamap);
220 case 2:
221 bus_dma_tag_destroy(aha->buffer_dmat);
222 case 1:
223 bus_dma_tag_destroy(aha->mailbox_dmat);
224 case 0:
225 break;
226 }
227 mtx_destroy(&aha->lock);
228 }
229
230 /*
231 * Probe the adapter and verify that the card is an Adaptec.
232 */
233 int
aha_probe(struct aha_softc * aha)234 aha_probe(struct aha_softc* aha)
235 {
236 u_int status;
237 u_int intstat;
238 int error;
239 board_id_data_t board_id;
240
241 /*
242 * See if the three I/O ports look reasonable.
243 * Touch the minimal number of registers in the
244 * failure case.
245 */
246 status = aha_inb(aha, STATUS_REG);
247 if ((status == 0) ||
248 (status & (DIAG_ACTIVE|CMD_REG_BUSY | STATUS_REG_RSVD)) != 0) {
249 PRVERB((aha->dev, "status reg test failed %x\n", status));
250 return (ENXIO);
251 }
252
253 intstat = aha_inb(aha, INTSTAT_REG);
254 if ((intstat & INTSTAT_REG_RSVD) != 0) {
255 PRVERB((aha->dev, "Failed Intstat Reg Test\n"));
256 return (ENXIO);
257 }
258
259 /*
260 * Looking good so far. Final test is to reset the
261 * adapter and fetch the board ID and ensure we aren't
262 * looking at a BusLogic.
263 */
264 if ((error = ahareset(aha, /*hard_reset*/TRUE)) != 0) {
265 PRVERB((aha->dev, "Failed Reset\n"));
266 return (ENXIO);
267 }
268
269 /*
270 * Get the board ID. We use this to see if we're dealing with
271 * a buslogic card or an aha card (or clone).
272 */
273 error = aha_cmd(aha, AOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0,
274 (uint8_t*)&board_id, sizeof(board_id), DEFAULT_CMD_TIMEOUT);
275 if (error != 0) {
276 PRVERB((aha->dev, "INQUIRE failed %x\n", error));
277 return (ENXIO);
278 }
279 aha->fw_major = board_id.firmware_rev_major;
280 aha->fw_minor = board_id.firmware_rev_minor;
281 aha->boardid = board_id.board_type;
282
283 /*
284 * The Buslogic cards have an id of either 0x41 or 0x42. So
285 * if those come up in the probe, we test the geometry register
286 * of the board. Adaptec boards that are this old will not have
287 * this register, and return 0xff, while buslogic cards will return
288 * something different.
289 *
290 * It appears that for reasons unknow, for the for the
291 * aha-1542B cards, we need to wait a little bit before trying
292 * to read the geometry register. I picked 10ms since we have
293 * reports that a for loop to 1000 did the trick, and this
294 * errs on the side of conservatism. Besides, no one will
295 * notice a 10mS delay here, even the 1542B card users :-)
296 *
297 * Some compatible cards return 0 here. Some cards also
298 * seem to return 0x7f.
299 *
300 * XXX I'm not sure how this will impact other cloned cards
301 *
302 * This really should be replaced with the esetup command, since
303 * that appears to be more reliable. This becomes more and more
304 * true over time as we discover more cards that don't read the
305 * geometry register consistently.
306 */
307 if (aha->boardid <= 0x42) {
308 /* Wait 10ms before reading */
309 DELAY(10000);
310 status = aha_inb(aha, GEOMETRY_REG);
311 if (status != 0xff && status != 0x00 && status != 0x7f) {
312 PRVERB((aha->dev, "Geometry Register test failed %#x\n",
313 status));
314 return (ENXIO);
315 }
316 }
317
318 return (0);
319 }
320
321 /*
322 * Pull the boards setup information and record it in our softc.
323 */
324 int
aha_fetch_adapter_info(struct aha_softc * aha)325 aha_fetch_adapter_info(struct aha_softc *aha)
326 {
327 setup_data_t setup_info;
328 config_data_t config_data;
329 uint8_t length_param;
330 int error;
331 struct aha_extbios extbios;
332
333 switch (aha->boardid) {
334 case BOARD_1540_16HEAD_BIOS:
335 snprintf(aha->model, sizeof(aha->model), "1540 16 head BIOS");
336 break;
337 case BOARD_1540_64HEAD_BIOS:
338 snprintf(aha->model, sizeof(aha->model), "1540 64 head BIOS");
339 break;
340 case BOARD_1542:
341 snprintf(aha->model, sizeof(aha->model), "1540/1542 64 head BIOS");
342 break;
343 case BOARD_1542C:
344 snprintf(aha->model, sizeof(aha->model), "1542C");
345 break;
346 case BOARD_1542CF:
347 snprintf(aha->model, sizeof(aha->model), "1542CF");
348 break;
349 case BOARD_1542CP:
350 snprintf(aha->model, sizeof(aha->model), "1542CP");
351 break;
352 default:
353 snprintf(aha->model, sizeof(aha->model), "Unknown");
354 break;
355 }
356 /*
357 * If we are a new type of 1542 board (anything newer than a 1542C)
358 * then disable the extended bios so that the
359 * mailbox interface is unlocked.
360 * This is also true for the 1542B Version 3.20. First Adaptec
361 * board that supports >1Gb drives.
362 * No need to check the extended bios flags as some of the
363 * extensions that cause us problems are not flagged in that byte.
364 */
365 if (PROBABLY_NEW_BOARD(aha->boardid) ||
366 (aha->boardid == 0x41
367 && aha->fw_major == 0x31 &&
368 aha->fw_minor >= 0x34)) {
369 error = aha_cmd(aha, AOP_RETURN_EXT_BIOS_INFO, NULL,
370 /*paramlen*/0, (u_char *)&extbios, sizeof(extbios),
371 DEFAULT_CMD_TIMEOUT);
372 if (error != 0) {
373 device_printf(aha->dev,
374 "AOP_RETURN_EXT_BIOS_INFO - Failed.");
375 return (error);
376 }
377 error = aha_cmd(aha, AOP_MBOX_IF_ENABLE, (uint8_t *)&extbios,
378 /*paramlen*/2, NULL, 0, DEFAULT_CMD_TIMEOUT);
379 if (error != 0) {
380 device_printf(aha->dev, "AOP_MBOX_IF_ENABLE - Failed.");
381 return (error);
382 }
383 }
384 if (aha->boardid < 0x41)
385 device_printf(aha->dev, "Warning: aha-1542A won't work.\n");
386
387 aha->max_sg = 17; /* Need >= 17 to do 64k I/O */
388 aha->diff_bus = 0;
389 aha->extended_lun = 0;
390 aha->extended_trans = 0;
391 aha->max_ccbs = 16;
392 /* Determine Sync/Wide/Disc settings */
393 length_param = sizeof(setup_info);
394 error = aha_cmd(aha, AOP_INQUIRE_SETUP_INFO, &length_param,
395 /*paramlen*/1, (uint8_t*)&setup_info, sizeof(setup_info),
396 DEFAULT_CMD_TIMEOUT);
397 if (error != 0) {
398 device_printf(aha->dev, "aha_fetch_adapter_info - Failed "
399 "Get Setup Info\n");
400 return (error);
401 }
402 if (setup_info.initiate_sync != 0) {
403 aha->sync_permitted = ALL_TARGETS;
404 }
405 aha->disc_permitted = ALL_TARGETS;
406
407 /* We need as many mailboxes as we can have ccbs */
408 aha->num_boxes = aha->max_ccbs;
409
410 /* Determine our SCSI ID */
411 error = aha_cmd(aha, AOP_INQUIRE_CONFIG, NULL, /*parmlen*/0,
412 (uint8_t*)&config_data, sizeof(config_data), DEFAULT_CMD_TIMEOUT);
413 if (error != 0) {
414 device_printf(aha->dev,
415 "aha_fetch_adapter_info - Failed Get Config\n");
416 return (error);
417 }
418 aha->scsi_id = config_data.scsi_id;
419 return (0);
420 }
421
422 /*
423 * Start the board, ready for normal operation
424 */
425 int
aha_init(struct aha_softc * aha)426 aha_init(struct aha_softc* aha)
427 {
428 /* Announce the Adapter */
429 device_printf(aha->dev, "AHA-%s FW Rev. %c.%c (ID=%x) ",
430 aha->model, aha->fw_major, aha->fw_minor, aha->boardid);
431
432 if (aha->diff_bus != 0)
433 printf("Diff ");
434
435 printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", aha->scsi_id,
436 aha->max_ccbs);
437
438 /*
439 * Create our DMA tags. These tags define the kinds of device
440 * accessible memory allocations and memory mappings we will
441 * need to perform during normal operation.
442 *
443 * Unless we need to further restrict the allocation, we rely
444 * on the restrictions of the parent dmat, hence the common
445 * use of MAXADDR and MAXSIZE.
446 */
447
448 /* DMA tag for mapping buffers into device visible space. */
449 if (bus_dma_tag_create( /* parent */ aha->parent_dmat,
450 /* alignment */ 1,
451 /* boundary */ 0,
452 /* lowaddr */ BUS_SPACE_MAXADDR,
453 /* highaddr */ BUS_SPACE_MAXADDR,
454 /* filter */ NULL,
455 /* filterarg */ NULL,
456 /* maxsize */ DFLTPHYS,
457 /* nsegments */ AHA_NSEG,
458 /* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
459 /* flags */ BUS_DMA_ALLOCNOW,
460 /* lockfunc */ busdma_lock_mutex,
461 /* lockarg */ &aha->lock,
462 &aha->buffer_dmat) != 0) {
463 goto error_exit;
464 }
465
466 aha->init_level++;
467 /* DMA tag for our mailboxes */
468 if (bus_dma_tag_create( /* parent */ aha->parent_dmat,
469 /* alignment */ 1,
470 /* boundary */ 0,
471 /* lowaddr */ BUS_SPACE_MAXADDR,
472 /* highaddr */ BUS_SPACE_MAXADDR,
473 /* filter */ NULL,
474 /* filterarg */ NULL,
475 /* maxsize */ aha->num_boxes *
476 (sizeof(aha_mbox_in_t) +
477 sizeof(aha_mbox_out_t)),
478 /* nsegments */ 1,
479 /* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
480 /* flags */ 0,
481 /* lockfunc */ NULL,
482 /* lockarg */ NULL,
483 &aha->mailbox_dmat) != 0) {
484 goto error_exit;
485 }
486
487 aha->init_level++;
488
489 /* Allocation for our mailboxes */
490 if (bus_dmamem_alloc(aha->mailbox_dmat, (void **)&aha->out_boxes,
491 BUS_DMA_NOWAIT, &aha->mailbox_dmamap) != 0)
492 goto error_exit;
493
494 aha->init_level++;
495
496 /* And permanently map them */
497 bus_dmamap_load(aha->mailbox_dmat, aha->mailbox_dmamap,
498 aha->out_boxes, aha->num_boxes * (sizeof(aha_mbox_in_t) +
499 sizeof(aha_mbox_out_t)), ahamapmboxes, aha, /*flags*/0);
500
501 aha->init_level++;
502
503 aha->in_boxes = (aha_mbox_in_t *)&aha->out_boxes[aha->num_boxes];
504
505 ahainitmboxes(aha);
506
507 /* DMA tag for our ccb structures */
508 if (bus_dma_tag_create( /* parent */ aha->parent_dmat,
509 /* alignment */ 1,
510 /* boundary */ 0,
511 /* lowaddr */ BUS_SPACE_MAXADDR,
512 /* highaddr */ BUS_SPACE_MAXADDR,
513 /* filter */ NULL,
514 /* filterarg */ NULL,
515 /* maxsize */ aha->max_ccbs *
516 sizeof(struct aha_ccb),
517 /* nsegments */ 1,
518 /* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
519 /* flags */ 0,
520 /* lockfunc */ NULL,
521 /* lockarg */ NULL,
522 &aha->ccb_dmat) != 0) {
523 goto error_exit;
524 }
525
526 aha->init_level++;
527
528 /* Allocation for our ccbs */
529 if (bus_dmamem_alloc(aha->ccb_dmat, (void **)&aha->aha_ccb_array,
530 BUS_DMA_NOWAIT, &aha->ccb_dmamap) != 0)
531 goto error_exit;
532
533 aha->init_level++;
534
535 /* And permanently map them */
536 bus_dmamap_load(aha->ccb_dmat, aha->ccb_dmamap, aha->aha_ccb_array,
537 aha->max_ccbs * sizeof(struct aha_ccb), ahamapccbs, aha, /*flags*/0);
538
539 aha->init_level++;
540
541 /* DMA tag for our S/G structures. We allocate in page sized chunks */
542 if (bus_dma_tag_create( /* parent */ aha->parent_dmat,
543 /* alignment */ 1,
544 /* boundary */ 0,
545 /* lowaddr */ BUS_SPACE_MAXADDR,
546 /* highaddr */ BUS_SPACE_MAXADDR,
547 /* filter */ NULL,
548 /* filterarg */ NULL,
549 /* maxsize */ PAGE_SIZE,
550 /* nsegments */ 1,
551 /* maxsegsz */ BUS_SPACE_MAXSIZE_24BIT,
552 /* flags */ 0,
553 /* lockfunc */ NULL,
554 /* lockarg */ NULL,
555 &aha->sg_dmat) != 0)
556 goto error_exit;
557
558 aha->init_level++;
559
560 /* Perform initial CCB allocation */
561 bzero(aha->aha_ccb_array, aha->max_ccbs * sizeof(struct aha_ccb));
562 ahaallocccbs(aha);
563
564 if (aha->num_ccbs == 0) {
565 device_printf(aha->dev,
566 "aha_init - Unable to allocate initial ccbs\n");
567 goto error_exit;
568 }
569
570 /*
571 * Note that we are going and return (to probe)
572 */
573 return (0);
574
575 error_exit:
576
577 return (ENXIO);
578 }
579
580 int
aha_attach(struct aha_softc * aha)581 aha_attach(struct aha_softc *aha)
582 {
583 int tagged_dev_openings;
584 struct cam_devq *devq;
585
586 /*
587 * We don't do tagged queueing, since the aha cards don't
588 * support it.
589 */
590 tagged_dev_openings = 0;
591
592 /*
593 * Create the device queue for our SIM.
594 */
595 devq = cam_simq_alloc(aha->max_ccbs - 1);
596 if (devq == NULL)
597 return (ENOMEM);
598
599 /*
600 * Construct our SIM entry
601 */
602 aha->sim = cam_sim_alloc(ahaaction, ahapoll, "aha", aha,
603 device_get_unit(aha->dev), &aha->lock, 2, tagged_dev_openings,
604 devq);
605 if (aha->sim == NULL) {
606 cam_simq_free(devq);
607 return (ENOMEM);
608 }
609 mtx_lock(&aha->lock);
610 if (xpt_bus_register(aha->sim, aha->dev, 0) != CAM_SUCCESS) {
611 cam_sim_free(aha->sim, /*free_devq*/TRUE);
612 mtx_unlock(&aha->lock);
613 return (ENXIO);
614 }
615 if (xpt_create_path(&aha->path, /*periph*/NULL, cam_sim_path(aha->sim),
616 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
617 xpt_bus_deregister(cam_sim_path(aha->sim));
618 cam_sim_free(aha->sim, /*free_devq*/TRUE);
619 mtx_unlock(&aha->lock);
620 return (ENXIO);
621 }
622 mtx_unlock(&aha->lock);
623 gone_in_dev(aha->dev, 12, "aha(4) driver");
624
625 return (0);
626 }
627
628 static void
ahaallocccbs(struct aha_softc * aha)629 ahaallocccbs(struct aha_softc *aha)
630 {
631 struct aha_ccb *next_ccb;
632 struct sg_map_node *sg_map;
633 bus_addr_t physaddr;
634 aha_sg_t *segs;
635 int newcount;
636 int i;
637
638 next_ccb = &aha->aha_ccb_array[aha->num_ccbs];
639
640 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
641
642 if (sg_map == NULL)
643 return;
644
645 /* Allocate S/G space for the next batch of CCBS */
646 if (bus_dmamem_alloc(aha->sg_dmat, (void **)&sg_map->sg_vaddr,
647 BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) {
648 free(sg_map, M_DEVBUF);
649 return;
650 }
651
652 SLIST_INSERT_HEAD(&aha->sg_maps, sg_map, links);
653
654 bus_dmamap_load(aha->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr,
655 PAGE_SIZE, ahamapsgs, aha, /*flags*/0);
656
657 segs = sg_map->sg_vaddr;
658 physaddr = sg_map->sg_physaddr;
659
660 newcount = (PAGE_SIZE / (AHA_NSEG * sizeof(aha_sg_t)));
661 for (i = 0; aha->num_ccbs < aha->max_ccbs && i < newcount; i++) {
662 int error;
663
664 next_ccb->sg_list = segs;
665 next_ccb->sg_list_phys = physaddr;
666 next_ccb->flags = ACCB_FREE;
667 callout_init_mtx(&next_ccb->timer, &aha->lock, 0);
668 error = bus_dmamap_create(aha->buffer_dmat, /*flags*/0,
669 &next_ccb->dmamap);
670 if (error != 0)
671 break;
672 SLIST_INSERT_HEAD(&aha->free_aha_ccbs, next_ccb, links);
673 segs += AHA_NSEG;
674 physaddr += (AHA_NSEG * sizeof(aha_sg_t));
675 next_ccb++;
676 aha->num_ccbs++;
677 }
678
679 /* Reserve a CCB for error recovery */
680 if (aha->recovery_accb == NULL) {
681 aha->recovery_accb = SLIST_FIRST(&aha->free_aha_ccbs);
682 SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
683 }
684 }
685
686 static __inline void
ahafreeccb(struct aha_softc * aha,struct aha_ccb * accb)687 ahafreeccb(struct aha_softc *aha, struct aha_ccb *accb)
688 {
689
690 if (!dumping)
691 mtx_assert(&aha->lock, MA_OWNED);
692 if ((accb->flags & ACCB_ACTIVE) != 0)
693 LIST_REMOVE(&accb->ccb->ccb_h, sim_links.le);
694 if (aha->resource_shortage != 0
695 && (accb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
696 accb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
697 aha->resource_shortage = FALSE;
698 }
699 accb->flags = ACCB_FREE;
700 SLIST_INSERT_HEAD(&aha->free_aha_ccbs, accb, links);
701 aha->active_ccbs--;
702 }
703
704 static struct aha_ccb*
ahagetccb(struct aha_softc * aha)705 ahagetccb(struct aha_softc *aha)
706 {
707 struct aha_ccb* accb;
708
709 if (!dumping)
710 mtx_assert(&aha->lock, MA_OWNED);
711 if ((accb = SLIST_FIRST(&aha->free_aha_ccbs)) != NULL) {
712 SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
713 aha->active_ccbs++;
714 } else if (aha->num_ccbs < aha->max_ccbs) {
715 ahaallocccbs(aha);
716 accb = SLIST_FIRST(&aha->free_aha_ccbs);
717 if (accb == NULL)
718 device_printf(aha->dev, "Can't malloc ACCB\n");
719 else {
720 SLIST_REMOVE_HEAD(&aha->free_aha_ccbs, links);
721 aha->active_ccbs++;
722 }
723 }
724
725 return (accb);
726 }
727
728 static void
ahaaction(struct cam_sim * sim,union ccb * ccb)729 ahaaction(struct cam_sim *sim, union ccb *ccb)
730 {
731 struct aha_softc *aha;
732
733 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahaaction\n"));
734
735 aha = (struct aha_softc *)cam_sim_softc(sim);
736 mtx_assert(&aha->lock, MA_OWNED);
737
738 switch (ccb->ccb_h.func_code) {
739 /* Common cases first */
740 case XPT_SCSI_IO: /* Execute the requested I/O operation */
741 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ {
742 struct aha_ccb *accb;
743 struct aha_hccb *hccb;
744
745 /*
746 * Get an accb to use.
747 */
748 if ((accb = ahagetccb(aha)) == NULL) {
749 aha->resource_shortage = TRUE;
750 xpt_freeze_simq(aha->sim, /*count*/1);
751 ccb->ccb_h.status = CAM_REQUEUE_REQ;
752 xpt_done(ccb);
753 return;
754 }
755 hccb = &accb->hccb;
756
757 /*
758 * So we can find the ACCB when an abort is requested
759 */
760 accb->ccb = ccb;
761 ccb->ccb_h.ccb_accb_ptr = accb;
762 ccb->ccb_h.ccb_aha_ptr = aha;
763
764 /*
765 * Put all the arguments for the xfer in the accb
766 */
767 hccb->target = ccb->ccb_h.target_id;
768 hccb->lun = ccb->ccb_h.target_lun;
769 hccb->ahastat = 0;
770 hccb->sdstat = 0;
771
772 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
773 struct ccb_scsiio *csio;
774 struct ccb_hdr *ccbh;
775 int error;
776
777 csio = &ccb->csio;
778 ccbh = &csio->ccb_h;
779 hccb->opcode = aha->ccb_ccb_opcode;
780 hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) != 0;
781 hccb->dataout = (ccb->ccb_h.flags & CAM_DIR_OUT) != 0;
782 hccb->cmd_len = csio->cdb_len;
783 if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) {
784 ccb->ccb_h.status = CAM_REQ_INVALID;
785 ahafreeccb(aha, accb);
786 xpt_done(ccb);
787 return;
788 }
789 hccb->sense_len = csio->sense_len;
790 if ((ccbh->flags & CAM_CDB_POINTER) != 0) {
791 if ((ccbh->flags & CAM_CDB_PHYS) == 0) {
792 bcopy(csio->cdb_io.cdb_ptr,
793 hccb->scsi_cdb, hccb->cmd_len);
794 } else {
795 /* I guess I could map it in... */
796 ccbh->status = CAM_REQ_INVALID;
797 ahafreeccb(aha, accb);
798 xpt_done(ccb);
799 return;
800 }
801 } else {
802 bcopy(csio->cdb_io.cdb_bytes,
803 hccb->scsi_cdb, hccb->cmd_len);
804 }
805 /*
806 * If we have any data to send with this command,
807 * map it into bus space.
808 */
809
810 error = bus_dmamap_load_ccb(
811 aha->buffer_dmat,
812 accb->dmamap,
813 ccb,
814 ahaexecuteccb,
815 accb,
816 /*flags*/0);
817 if (error == EINPROGRESS) {
818 /*
819 * So as to maintain ordering, freeze the
820 * controller queue until our mapping is
821 * returned.
822 */
823 xpt_freeze_simq(aha->sim, 1);
824 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
825 }
826 } else {
827 hccb->opcode = INITIATOR_BUS_DEV_RESET;
828 /* No data transfer */
829 hccb->datain = TRUE;
830 hccb->dataout = TRUE;
831 hccb->cmd_len = 0;
832 hccb->sense_len = 0;
833 ahaexecuteccb(accb, NULL, 0, 0);
834 }
835 break;
836 }
837 case XPT_ABORT: /* Abort the specified CCB */
838 /* XXX Implement */
839 ccb->ccb_h.status = CAM_REQ_INVALID;
840 xpt_done(ccb);
841 break;
842 case XPT_SET_TRAN_SETTINGS:
843 /* XXX Implement */
844 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
845 xpt_done(ccb);
846 break;
847 case XPT_GET_TRAN_SETTINGS:
848 /* Get default/user set transfer settings for the target */
849 {
850 struct ccb_trans_settings *cts = &ccb->cts;
851 u_int target_mask = 0x01 << ccb->ccb_h.target_id;
852 struct ccb_trans_settings_scsi *scsi =
853 &cts->proto_specific.scsi;
854 struct ccb_trans_settings_spi *spi =
855 &cts->xport_specific.spi;
856
857 cts->protocol = PROTO_SCSI;
858 cts->protocol_version = SCSI_REV_2;
859 cts->transport = XPORT_SPI;
860 cts->transport_version = 2;
861 if (cts->type == CTS_TYPE_USER_SETTINGS) {
862 spi->flags = 0;
863 if ((aha->disc_permitted & target_mask) != 0)
864 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
865 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
866 if ((aha->sync_permitted & target_mask) != 0) {
867 if (aha->boardid >= BOARD_1542CF)
868 spi->sync_period = 25;
869 else
870 spi->sync_period = 50;
871 } else {
872 spi->sync_period = 0;
873 }
874
875 if (spi->sync_period != 0)
876 spi->sync_offset = 15;
877
878 spi->valid = CTS_SPI_VALID_SYNC_RATE
879 | CTS_SPI_VALID_SYNC_OFFSET
880 | CTS_SPI_VALID_BUS_WIDTH
881 | CTS_SPI_VALID_DISC;
882 scsi->valid = CTS_SCSI_VALID_TQ;
883 } else {
884 ahafetchtransinfo(aha, cts);
885 }
886
887 ccb->ccb_h.status = CAM_REQ_CMP;
888 xpt_done(ccb);
889 break;
890 }
891 case XPT_CALC_GEOMETRY:
892 {
893 struct ccb_calc_geometry *ccg;
894 uint32_t size_mb;
895 uint32_t secs_per_cylinder;
896
897 ccg = &ccb->ccg;
898 size_mb = ccg->volume_size
899 / ((1024L * 1024L) / ccg->block_size);
900 if (size_mb >= 1024 && (aha->extended_trans != 0)) {
901 if (size_mb >= 2048) {
902 ccg->heads = 255;
903 ccg->secs_per_track = 63;
904 } else {
905 ccg->heads = 128;
906 ccg->secs_per_track = 32;
907 }
908 } else {
909 ccg->heads = 64;
910 ccg->secs_per_track = 32;
911 }
912 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
913 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
914 ccb->ccb_h.status = CAM_REQ_CMP;
915 xpt_done(ccb);
916 break;
917 }
918 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
919 ahareset(aha, /*hardreset*/TRUE);
920 ccb->ccb_h.status = CAM_REQ_CMP;
921 xpt_done(ccb);
922 break;
923 case XPT_TERM_IO: /* Terminate the I/O process */
924 /* XXX Implement */
925 ccb->ccb_h.status = CAM_REQ_INVALID;
926 xpt_done(ccb);
927 break;
928 case XPT_PATH_INQ: /* Path routing inquiry */
929 {
930 struct ccb_pathinq *cpi = &ccb->cpi;
931
932 cpi->version_num = 1; /* XXX??? */
933 cpi->hba_inquiry = PI_SDTR_ABLE;
934 cpi->target_sprt = 0;
935 cpi->hba_misc = 0;
936 cpi->hba_eng_cnt = 0;
937 cpi->max_target = 7;
938 cpi->max_lun = 7;
939 cpi->initiator_id = aha->scsi_id;
940 cpi->bus_id = cam_sim_bus(sim);
941 cpi->base_transfer_speed = 3300;
942 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
943 strlcpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
944 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
945 cpi->unit_number = cam_sim_unit(sim);
946 cpi->transport = XPORT_SPI;
947 cpi->transport_version = 2;
948 cpi->protocol = PROTO_SCSI;
949 cpi->protocol_version = SCSI_REV_2;
950 cpi->ccb_h.status = CAM_REQ_CMP;
951 xpt_done(ccb);
952 break;
953 }
954 default:
955 ccb->ccb_h.status = CAM_REQ_INVALID;
956 xpt_done(ccb);
957 break;
958 }
959 }
960
961 static void
ahaexecuteccb(void * arg,bus_dma_segment_t * dm_segs,int nseg,int error)962 ahaexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
963 {
964 struct aha_ccb *accb;
965 union ccb *ccb;
966 struct aha_softc *aha;
967 uint32_t paddr;
968
969 accb = (struct aha_ccb *)arg;
970 ccb = accb->ccb;
971 aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr;
972
973 if (error != 0) {
974 if (error != EFBIG)
975 device_printf(aha->dev,
976 "Unexepected error 0x%x returned from "
977 "bus_dmamap_load\n", error);
978 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
979 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
980 ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
981 }
982 ahafreeccb(aha, accb);
983 xpt_done(ccb);
984 return;
985 }
986
987 if (nseg != 0) {
988 aha_sg_t *sg;
989 bus_dma_segment_t *end_seg;
990 bus_dmasync_op_t op;
991
992 end_seg = dm_segs + nseg;
993
994 /* Copy the segments into our SG list */
995 sg = accb->sg_list;
996 while (dm_segs < end_seg) {
997 ahautoa24(dm_segs->ds_len, sg->len);
998 ahautoa24(dm_segs->ds_addr, sg->addr);
999 sg++;
1000 dm_segs++;
1001 }
1002
1003 if (nseg > 1) {
1004 accb->hccb.opcode = aha->ccb_sg_opcode;
1005 ahautoa24((sizeof(aha_sg_t) * nseg),
1006 accb->hccb.data_len);
1007 ahautoa24(accb->sg_list_phys, accb->hccb.data_addr);
1008 } else {
1009 bcopy(accb->sg_list->len, accb->hccb.data_len, 3);
1010 bcopy(accb->sg_list->addr, accb->hccb.data_addr, 3);
1011 }
1012
1013 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1014 op = BUS_DMASYNC_PREREAD;
1015 else
1016 op = BUS_DMASYNC_PREWRITE;
1017
1018 bus_dmamap_sync(aha->buffer_dmat, accb->dmamap, op);
1019
1020 } else {
1021 accb->hccb.opcode = INITIATOR_CCB;
1022 ahautoa24(0, accb->hccb.data_len);
1023 ahautoa24(0, accb->hccb.data_addr);
1024 }
1025
1026 /*
1027 * Last time we need to check if this CCB needs to
1028 * be aborted.
1029 */
1030 if (ccb->ccb_h.status != CAM_REQ_INPROG) {
1031 if (nseg != 0)
1032 bus_dmamap_unload(aha->buffer_dmat, accb->dmamap);
1033 ahafreeccb(aha, accb);
1034 xpt_done(ccb);
1035 return;
1036 }
1037
1038 accb->flags = ACCB_ACTIVE;
1039 ccb->ccb_h.status |= CAM_SIM_QUEUED;
1040 LIST_INSERT_HEAD(&aha->pending_ccbs, &ccb->ccb_h, sim_links.le);
1041
1042 callout_reset_sbt(&accb->timer, SBT_1MS * ccb->ccb_h.timeout, 0,
1043 ahatimeout, accb, 0);
1044
1045 /* Tell the adapter about this command */
1046 if (aha->cur_outbox->action_code != AMBO_FREE) {
1047 /*
1048 * We should never encounter a busy mailbox.
1049 * If we do, warn the user, and treat it as
1050 * a resource shortage. If the controller is
1051 * hung, one of the pending transactions will
1052 * timeout causing us to start recovery operations.
1053 */
1054 device_printf(aha->dev,
1055 "Encountered busy mailbox with %d out of %d "
1056 "commands active!!!", aha->active_ccbs, aha->max_ccbs);
1057 callout_stop(&accb->timer);
1058 if (nseg != 0)
1059 bus_dmamap_unload(aha->buffer_dmat, accb->dmamap);
1060 ahafreeccb(aha, accb);
1061 aha->resource_shortage = TRUE;
1062 xpt_freeze_simq(aha->sim, /*count*/1);
1063 ccb->ccb_h.status = CAM_REQUEUE_REQ;
1064 xpt_done(ccb);
1065 return;
1066 }
1067 paddr = ahaccbvtop(aha, accb);
1068 ahautoa24(paddr, aha->cur_outbox->ccb_addr);
1069 aha->cur_outbox->action_code = AMBO_START;
1070 aha_outb(aha, COMMAND_REG, AOP_START_MBOX);
1071
1072 ahanextoutbox(aha);
1073 }
1074
1075 void
aha_intr(void * arg)1076 aha_intr(void *arg)
1077 {
1078 struct aha_softc *aha;
1079
1080 aha = arg;
1081 mtx_lock(&aha->lock);
1082 aha_intr_locked(aha);
1083 mtx_unlock(&aha->lock);
1084 }
1085
1086 void
aha_intr_locked(struct aha_softc * aha)1087 aha_intr_locked(struct aha_softc *aha)
1088 {
1089 u_int intstat;
1090 uint32_t paddr;
1091
1092 while (((intstat = aha_inb(aha, INTSTAT_REG)) & INTR_PENDING) != 0) {
1093 if ((intstat & CMD_COMPLETE) != 0) {
1094 aha->latched_status = aha_inb(aha, STATUS_REG);
1095 aha->command_cmp = TRUE;
1096 }
1097
1098 aha_outb(aha, CONTROL_REG, RESET_INTR);
1099
1100 if ((intstat & IMB_LOADED) != 0) {
1101 while (aha->cur_inbox->comp_code != AMBI_FREE) {
1102 paddr = aha_a24tou(aha->cur_inbox->ccb_addr);
1103 ahadone(aha, ahaccbptov(aha, paddr),
1104 aha->cur_inbox->comp_code);
1105 aha->cur_inbox->comp_code = AMBI_FREE;
1106 ahanextinbox(aha);
1107 }
1108 }
1109
1110 if ((intstat & SCSI_BUS_RESET) != 0) {
1111 ahareset(aha, /*hardreset*/FALSE);
1112 }
1113 }
1114 }
1115
1116 static void
ahadone(struct aha_softc * aha,struct aha_ccb * accb,aha_mbi_comp_code_t comp_code)1117 ahadone(struct aha_softc *aha, struct aha_ccb *accb, aha_mbi_comp_code_t comp_code)
1118 {
1119 union ccb *ccb;
1120 struct ccb_scsiio *csio;
1121
1122 ccb = accb->ccb;
1123 csio = &accb->ccb->csio;
1124
1125 if ((accb->flags & ACCB_ACTIVE) == 0) {
1126 device_printf(aha->dev,
1127 "ahadone - Attempt to free non-active ACCB %p\n",
1128 (void *)accb);
1129 return;
1130 }
1131
1132 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1133 bus_dmasync_op_t op;
1134
1135 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
1136 op = BUS_DMASYNC_POSTREAD;
1137 else
1138 op = BUS_DMASYNC_POSTWRITE;
1139 bus_dmamap_sync(aha->buffer_dmat, accb->dmamap, op);
1140 bus_dmamap_unload(aha->buffer_dmat, accb->dmamap);
1141 }
1142
1143 if (accb == aha->recovery_accb) {
1144 /*
1145 * The recovery ACCB does not have a CCB associated
1146 * with it, so short circuit the normal error handling.
1147 * We now traverse our list of pending CCBs and process
1148 * any that were terminated by the recovery CCBs action.
1149 * We also reinstate timeouts for all remaining, pending,
1150 * CCBs.
1151 */
1152 struct cam_path *path;
1153 struct ccb_hdr *ccb_h;
1154 cam_status error;
1155
1156 /* Notify all clients that a BDR occurred */
1157 error = xpt_create_path(&path, /*periph*/NULL,
1158 cam_sim_path(aha->sim), accb->hccb.target,
1159 CAM_LUN_WILDCARD);
1160
1161 if (error == CAM_REQ_CMP) {
1162 xpt_async(AC_SENT_BDR, path, NULL);
1163 xpt_free_path(path);
1164 }
1165
1166 ccb_h = LIST_FIRST(&aha->pending_ccbs);
1167 while (ccb_h != NULL) {
1168 struct aha_ccb *pending_accb;
1169
1170 pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
1171 if (pending_accb->hccb.target == accb->hccb.target) {
1172 pending_accb->hccb.ahastat = AHASTAT_HA_BDR;
1173 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1174 ahadone(aha, pending_accb, AMBI_ERROR);
1175 } else {
1176 callout_reset_sbt(&pending_accb->timer,
1177 SBT_1MS * ccb_h->timeout, 0, ahatimeout,
1178 pending_accb, 0);
1179 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1180 }
1181 }
1182 device_printf(aha->dev, "No longer in timeout\n");
1183 return;
1184 }
1185
1186 callout_stop(&accb->timer);
1187
1188 switch (comp_code) {
1189 case AMBI_FREE:
1190 device_printf(aha->dev,
1191 "ahadone - CCB completed with free status!\n");
1192 break;
1193 case AMBI_NOT_FOUND:
1194 device_printf(aha->dev,
1195 "ahadone - CCB Abort failed to find CCB\n");
1196 break;
1197 case AMBI_ABORT:
1198 case AMBI_ERROR:
1199 /* An error occurred */
1200 if (accb->hccb.opcode < INITIATOR_CCB_WRESID)
1201 csio->resid = 0;
1202 else
1203 csio->resid = aha_a24tou(accb->hccb.data_len);
1204 switch(accb->hccb.ahastat) {
1205 case AHASTAT_DATARUN_ERROR:
1206 {
1207 if (csio->resid <= 0) {
1208 csio->ccb_h.status = CAM_DATA_RUN_ERR;
1209 break;
1210 }
1211 /* FALLTHROUGH */
1212 }
1213 case AHASTAT_NOERROR:
1214 csio->scsi_status = accb->hccb.sdstat;
1215 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
1216 switch(csio->scsi_status) {
1217 case SCSI_STATUS_CHECK_COND:
1218 case SCSI_STATUS_CMD_TERMINATED:
1219 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
1220 /*
1221 * The aha writes the sense data at different
1222 * offsets based on the scsi cmd len
1223 */
1224 bcopy((caddr_t) &accb->hccb.scsi_cdb +
1225 accb->hccb.cmd_len,
1226 (caddr_t) &csio->sense_data,
1227 accb->hccb.sense_len);
1228 break;
1229 default:
1230 break;
1231 case SCSI_STATUS_OK:
1232 csio->ccb_h.status = CAM_REQ_CMP;
1233 break;
1234 }
1235 break;
1236 case AHASTAT_SELTIMEOUT:
1237 csio->ccb_h.status = CAM_SEL_TIMEOUT;
1238 break;
1239 case AHASTAT_UNEXPECTED_BUSFREE:
1240 csio->ccb_h.status = CAM_UNEXP_BUSFREE;
1241 break;
1242 case AHASTAT_INVALID_PHASE:
1243 csio->ccb_h.status = CAM_SEQUENCE_FAIL;
1244 break;
1245 case AHASTAT_INVALID_ACTION_CODE:
1246 panic("%s: Inavlid Action code", aha_name(aha));
1247 break;
1248 case AHASTAT_INVALID_OPCODE:
1249 if (accb->hccb.opcode < INITIATOR_CCB_WRESID)
1250 panic("%s: Invalid CCB Opcode %x hccb = %p",
1251 aha_name(aha), accb->hccb.opcode,
1252 &accb->hccb);
1253 device_printf(aha->dev,
1254 "AHA-1540A compensation failed\n");
1255 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
1256 csio->ccb_h.status = CAM_REQUEUE_REQ;
1257 break;
1258 case AHASTAT_LINKED_CCB_LUN_MISMATCH:
1259 /* We don't even support linked commands... */
1260 panic("%s: Linked CCB Lun Mismatch", aha_name(aha));
1261 break;
1262 case AHASTAT_INVALID_CCB_OR_SG_PARAM:
1263 panic("%s: Invalid CCB or SG list", aha_name(aha));
1264 break;
1265 case AHASTAT_HA_SCSI_BUS_RESET:
1266 if ((csio->ccb_h.status & CAM_STATUS_MASK)
1267 != CAM_CMD_TIMEOUT)
1268 csio->ccb_h.status = CAM_SCSI_BUS_RESET;
1269 break;
1270 case AHASTAT_HA_BDR:
1271 if ((accb->flags & ACCB_DEVICE_RESET) == 0)
1272 csio->ccb_h.status = CAM_BDR_SENT;
1273 else
1274 csio->ccb_h.status = CAM_CMD_TIMEOUT;
1275 break;
1276 }
1277 if (csio->ccb_h.status != CAM_REQ_CMP) {
1278 xpt_freeze_devq(csio->ccb_h.path, /*count*/1);
1279 csio->ccb_h.status |= CAM_DEV_QFRZN;
1280 }
1281 if ((accb->flags & ACCB_RELEASE_SIMQ) != 0)
1282 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1283 ahafreeccb(aha, accb);
1284 xpt_done(ccb);
1285 break;
1286 case AMBI_OK:
1287 /* All completed without incident */
1288 /* XXX DO WE NEED TO COPY SENSE BYTES HERE???? XXX */
1289 /* I don't think so since it works???? */
1290 ccb->ccb_h.status |= CAM_REQ_CMP;
1291 if ((accb->flags & ACCB_RELEASE_SIMQ) != 0)
1292 ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
1293 ahafreeccb(aha, accb);
1294 xpt_done(ccb);
1295 break;
1296 }
1297 }
1298
1299 static int
ahareset(struct aha_softc * aha,int hard_reset)1300 ahareset(struct aha_softc* aha, int hard_reset)
1301 {
1302 struct ccb_hdr *ccb_h;
1303 u_int status;
1304 u_int timeout;
1305 uint8_t reset_type;
1306
1307 if (hard_reset != 0)
1308 reset_type = HARD_RESET;
1309 else
1310 reset_type = SOFT_RESET;
1311 aha_outb(aha, CONTROL_REG, reset_type);
1312
1313 /* Wait 5sec. for Diagnostic start */
1314 timeout = 5 * 10000;
1315 while (--timeout) {
1316 status = aha_inb(aha, STATUS_REG);
1317 if ((status & DIAG_ACTIVE) != 0)
1318 break;
1319 DELAY(100);
1320 }
1321 if (timeout == 0) {
1322 PRVERB((aha->dev, "ahareset - Diagnostic Active failed to "
1323 "assert. status = %#x\n", status));
1324 return (ETIMEDOUT);
1325 }
1326
1327 /* Wait 10sec. for Diagnostic end */
1328 timeout = 10 * 10000;
1329 while (--timeout) {
1330 status = aha_inb(aha, STATUS_REG);
1331 if ((status & DIAG_ACTIVE) == 0)
1332 break;
1333 DELAY(100);
1334 }
1335 if (timeout == 0) {
1336 panic("%s: ahareset - Diagnostic Active failed to drop. "
1337 "status = 0x%x\n", aha_name(aha), status);
1338 return (ETIMEDOUT);
1339 }
1340
1341 /* Wait for the host adapter to become ready or report a failure */
1342 timeout = 10000;
1343 while (--timeout) {
1344 status = aha_inb(aha, STATUS_REG);
1345 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0)
1346 break;
1347 DELAY(100);
1348 }
1349 if (timeout == 0) {
1350 device_printf(aha->dev, "ahareset - Host adapter failed to "
1351 "come ready. status = 0x%x\n", status);
1352 return (ETIMEDOUT);
1353 }
1354
1355 /* If the diagnostics failed, tell the user */
1356 if ((status & DIAG_FAIL) != 0
1357 || (status & HA_READY) == 0) {
1358 device_printf(aha->dev, "ahareset - Adapter failed diag\n");
1359
1360 if ((status & DATAIN_REG_READY) != 0)
1361 device_printf(aha->dev, "ahareset - Host Adapter "
1362 "Error code = 0x%x\n", aha_inb(aha, DATAIN_REG));
1363 return (ENXIO);
1364 }
1365
1366 /* If we've attached to the XPT, tell it about the event */
1367 if (aha->path != NULL)
1368 xpt_async(AC_BUS_RESET, aha->path, NULL);
1369
1370 /*
1371 * Perform completion processing for all outstanding CCBs.
1372 */
1373 while ((ccb_h = LIST_FIRST(&aha->pending_ccbs)) != NULL) {
1374 struct aha_ccb *pending_accb;
1375
1376 pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
1377 pending_accb->hccb.ahastat = AHASTAT_HA_SCSI_BUS_RESET;
1378 ahadone(aha, pending_accb, AMBI_ERROR);
1379 }
1380
1381 /* If we've allocated mailboxes, initialize them */
1382 /* Must be done after we've aborted our queue, or aha_cmd fails */
1383 if (aha->init_level > 4)
1384 ahainitmboxes(aha);
1385
1386 return (0);
1387 }
1388
1389 /*
1390 * Send a command to the adapter.
1391 */
1392 int
aha_cmd(struct aha_softc * aha,aha_op_t opcode,uint8_t * params,u_int param_len,uint8_t * reply_data,u_int reply_len,u_int cmd_timeout)1393 aha_cmd(struct aha_softc *aha, aha_op_t opcode, uint8_t *params,
1394 u_int param_len, uint8_t *reply_data, u_int reply_len,
1395 u_int cmd_timeout)
1396 {
1397 u_int timeout;
1398 u_int status;
1399 u_int saved_status;
1400 u_int intstat;
1401 u_int reply_buf_size;
1402 int cmd_complete;
1403 int error;
1404
1405 /* No data returned to start */
1406 reply_buf_size = reply_len;
1407 reply_len = 0;
1408 intstat = 0;
1409 cmd_complete = 0;
1410 saved_status = 0;
1411 error = 0;
1412
1413 /*
1414 * All commands except for the "start mailbox" and the "enable
1415 * outgoing mailbox read interrupt" commands cannot be issued
1416 * while there are pending transactions. Freeze our SIMQ
1417 * and wait for all completions to occur if necessary.
1418 */
1419 timeout = 10000;
1420 while (LIST_FIRST(&aha->pending_ccbs) != NULL && --timeout) {
1421 /* Fire the interrupt handler in case interrupts are blocked */
1422 aha_intr(aha);
1423 DELAY(10);
1424 }
1425
1426 if (timeout == 0) {
1427 device_printf(aha->dev,
1428 "aha_cmd: Timeout waiting for adapter idle\n");
1429 return (ETIMEDOUT);
1430 }
1431 aha->command_cmp = 0;
1432 /*
1433 * Wait up to 10 sec. for the adapter to become
1434 * ready to accept commands.
1435 */
1436 timeout = 100000;
1437 while (--timeout) {
1438 status = aha_inb(aha, STATUS_REG);
1439 if ((status & HA_READY) != 0 && (status & CMD_REG_BUSY) == 0)
1440 break;
1441 /*
1442 * Throw away any pending data which may be
1443 * left over from earlier commands that we
1444 * timedout on.
1445 */
1446 if ((status & DATAIN_REG_READY) != 0)
1447 (void)aha_inb(aha, DATAIN_REG);
1448 DELAY(100);
1449 }
1450 if (timeout == 0) {
1451 device_printf(aha->dev, "aha_cmd: Timeout waiting for adapter"
1452 " ready, status = 0x%x\n", status);
1453 return (ETIMEDOUT);
1454 }
1455
1456 /*
1457 * Send the opcode followed by any necessary parameter bytes.
1458 */
1459 aha_outb(aha, COMMAND_REG, opcode);
1460
1461 /*
1462 * Wait for up to 1sec to get the parameter list sent
1463 */
1464 timeout = 10000;
1465 while (param_len && --timeout) {
1466 DELAY(100);
1467 status = aha_inb(aha, STATUS_REG);
1468 intstat = aha_inb(aha, INTSTAT_REG);
1469
1470 if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1471 == (INTR_PENDING|CMD_COMPLETE)) {
1472 saved_status = status;
1473 cmd_complete = 1;
1474 break;
1475 }
1476
1477 if (aha->command_cmp != 0) {
1478 saved_status = aha->latched_status;
1479 cmd_complete = 1;
1480 break;
1481 }
1482 if ((status & DATAIN_REG_READY) != 0)
1483 break;
1484 if ((status & CMD_REG_BUSY) == 0) {
1485 aha_outb(aha, COMMAND_REG, *params++);
1486 param_len--;
1487 timeout = 10000;
1488 }
1489 }
1490 if (timeout == 0) {
1491 device_printf(aha->dev, "aha_cmd: Timeout sending parameters, "
1492 "status = 0x%x\n", status);
1493 error = ETIMEDOUT;
1494 }
1495
1496 /*
1497 * For all other commands, we wait for any output data
1498 * and the final comand completion interrupt.
1499 */
1500 while (cmd_complete == 0 && --cmd_timeout) {
1501
1502 status = aha_inb(aha, STATUS_REG);
1503 intstat = aha_inb(aha, INTSTAT_REG);
1504
1505 if (aha->command_cmp != 0) {
1506 cmd_complete = 1;
1507 saved_status = aha->latched_status;
1508 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE))
1509 == (INTR_PENDING|CMD_COMPLETE)) {
1510 /*
1511 * Our poll (in case interrupts are blocked)
1512 * saw the CMD_COMPLETE interrupt.
1513 */
1514 cmd_complete = 1;
1515 saved_status = status;
1516 }
1517 if ((status & DATAIN_REG_READY) != 0) {
1518 uint8_t data;
1519
1520 data = aha_inb(aha, DATAIN_REG);
1521 if (reply_len < reply_buf_size) {
1522 *reply_data++ = data;
1523 } else {
1524 device_printf(aha->dev,
1525 "aha_cmd - Discarded reply data "
1526 "byte for opcode 0x%x\n", opcode);
1527 }
1528 /*
1529 * Reset timeout to ensure at least a second
1530 * between response bytes.
1531 */
1532 cmd_timeout = MAX(cmd_timeout, 10000);
1533 reply_len++;
1534 }
1535 DELAY(100);
1536 }
1537 if (cmd_timeout == 0) {
1538 device_printf(aha->dev, "aha_cmd: Timeout: status = 0x%x, "
1539 "intstat = 0x%x, reply_len = %d\n", status, intstat,
1540 reply_len);
1541 return (ETIMEDOUT);
1542 }
1543
1544 /*
1545 * Clear any pending interrupts. Block interrupts so our
1546 * interrupt handler is not re-entered.
1547 */
1548 aha_intr(aha);
1549
1550 if (error != 0)
1551 return (error);
1552
1553 /*
1554 * If the command was rejected by the controller, tell the caller.
1555 */
1556 if ((saved_status & CMD_INVALID) != 0) {
1557 PRVERB((aha->dev, "Invalid Command 0x%x\n", opcode));
1558 /*
1559 * Some early adapters may not recover properly from
1560 * an invalid command. If it appears that the controller
1561 * has wedged (i.e. status was not cleared by our interrupt
1562 * reset above), perform a soft reset.
1563 */
1564 DELAY(1000);
1565 status = aha_inb(aha, STATUS_REG);
1566 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY|
1567 CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0
1568 || (status & (HA_READY|INIT_REQUIRED))
1569 != (HA_READY|INIT_REQUIRED))
1570 ahareset(aha, /*hard_reset*/FALSE);
1571 return (EINVAL);
1572 }
1573
1574 if (param_len > 0) {
1575 /* The controller did not accept the full argument list */
1576 PRVERB((aha->dev, "Controller did not accept full argument "
1577 "list (%d > 0)\n", param_len));
1578 return (E2BIG);
1579 }
1580
1581 if (reply_len != reply_buf_size) {
1582 /* Too much or too little data received */
1583 PRVERB((aha->dev, "data received mismatch (%d != %d)\n",
1584 reply_len, reply_buf_size));
1585 return (EMSGSIZE);
1586 }
1587
1588 /* We were successful */
1589 return (0);
1590 }
1591
1592 static int
ahainitmboxes(struct aha_softc * aha)1593 ahainitmboxes(struct aha_softc *aha)
1594 {
1595 int error;
1596 init_24b_mbox_params_t init_mbox;
1597
1598 bzero(aha->in_boxes, sizeof(aha_mbox_in_t) * aha->num_boxes);
1599 bzero(aha->out_boxes, sizeof(aha_mbox_out_t) * aha->num_boxes);
1600 aha->cur_inbox = aha->in_boxes;
1601 aha->last_inbox = aha->in_boxes + aha->num_boxes - 1;
1602 aha->cur_outbox = aha->out_boxes;
1603 aha->last_outbox = aha->out_boxes + aha->num_boxes - 1;
1604
1605 /* Tell the adapter about them */
1606 init_mbox.num_mboxes = aha->num_boxes;
1607 ahautoa24(aha->mailbox_physbase, init_mbox.base_addr);
1608 error = aha_cmd(aha, AOP_INITIALIZE_MBOX, (uint8_t *)&init_mbox,
1609 /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL,
1610 /*reply_len*/0, DEFAULT_CMD_TIMEOUT);
1611
1612 if (error != 0)
1613 printf("ahainitmboxes: Initialization command failed\n");
1614 return (error);
1615 }
1616
1617 /*
1618 * Update the XPT's idea of the negotiated transfer
1619 * parameters for a particular target.
1620 */
1621 static void
ahafetchtransinfo(struct aha_softc * aha,struct ccb_trans_settings * cts)1622 ahafetchtransinfo(struct aha_softc *aha, struct ccb_trans_settings* cts)
1623 {
1624 setup_data_t setup_info;
1625 u_int target;
1626 u_int targ_offset;
1627 u_int sync_period;
1628 int error;
1629 uint8_t param;
1630 targ_syncinfo_t sync_info;
1631 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
1632
1633 target = cts->ccb_h.target_id;
1634 targ_offset = (target & 0x7);
1635
1636 /*
1637 * Inquire Setup Information. This command retreives
1638 * the sync info for older models.
1639 */
1640 param = sizeof(setup_info);
1641 error = aha_cmd(aha, AOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1,
1642 (uint8_t*)&setup_info, sizeof(setup_info), DEFAULT_CMD_TIMEOUT);
1643
1644 if (error != 0) {
1645 device_printf(aha->dev,
1646 "ahafetchtransinfo - Inquire Setup Info Failed %d\n",
1647 error);
1648 return;
1649 }
1650
1651 sync_info = setup_info.syncinfo[targ_offset];
1652
1653 if (sync_info.sync == 0)
1654 spi->sync_offset = 0;
1655 else
1656 spi->sync_offset = sync_info.offset;
1657
1658 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
1659
1660 if (aha->boardid >= BOARD_1542CF)
1661 sync_period = 1000;
1662 else
1663 sync_period = 2000;
1664 sync_period += 500 * sync_info.period;
1665
1666 /* Convert ns value to standard SCSI sync rate */
1667 if (spi->sync_offset != 0)
1668 spi->sync_period = scsi_calc_syncparam(sync_period);
1669 else
1670 spi->sync_period = 0;
1671
1672 spi->valid = CTS_SPI_VALID_SYNC_RATE
1673 | CTS_SPI_VALID_SYNC_OFFSET
1674 | CTS_SPI_VALID_BUS_WIDTH;
1675 xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts);
1676 }
1677
1678 static void
ahamapmboxes(void * arg,bus_dma_segment_t * segs,int nseg,int error)1679 ahamapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1680 {
1681 struct aha_softc* aha;
1682
1683 aha = (struct aha_softc*)arg;
1684 aha->mailbox_physbase = segs->ds_addr;
1685 }
1686
1687 static void
ahamapccbs(void * arg,bus_dma_segment_t * segs,int nseg,int error)1688 ahamapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1689 {
1690 struct aha_softc* aha;
1691
1692 aha = (struct aha_softc*)arg;
1693 aha->aha_ccb_physbase = segs->ds_addr;
1694 }
1695
1696 static void
ahamapsgs(void * arg,bus_dma_segment_t * segs,int nseg,int error)1697 ahamapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1698 {
1699
1700 struct aha_softc* aha;
1701
1702 aha = (struct aha_softc*)arg;
1703 SLIST_FIRST(&aha->sg_maps)->sg_physaddr = segs->ds_addr;
1704 }
1705
1706 static void
ahapoll(struct cam_sim * sim)1707 ahapoll(struct cam_sim *sim)
1708 {
1709 aha_intr_locked(cam_sim_softc(sim));
1710 }
1711
1712 static void
ahatimeout(void * arg)1713 ahatimeout(void *arg)
1714 {
1715 struct aha_ccb *accb;
1716 union ccb *ccb;
1717 struct aha_softc *aha;
1718 uint32_t paddr;
1719 struct ccb_hdr *ccb_h;
1720
1721 accb = (struct aha_ccb *)arg;
1722 ccb = accb->ccb;
1723 aha = (struct aha_softc *)ccb->ccb_h.ccb_aha_ptr;
1724 mtx_assert(&aha->lock, MA_OWNED);
1725 xpt_print_path(ccb->ccb_h.path);
1726 printf("CCB %p - timed out\n", (void *)accb);
1727
1728 if ((accb->flags & ACCB_ACTIVE) == 0) {
1729 xpt_print_path(ccb->ccb_h.path);
1730 printf("CCB %p - timed out CCB already completed\n",
1731 (void *)accb);
1732 return;
1733 }
1734
1735 /*
1736 * In order to simplify the recovery process, we ask the XPT
1737 * layer to halt the queue of new transactions and we traverse
1738 * the list of pending CCBs and remove their timeouts. This
1739 * means that the driver attempts to clear only one error
1740 * condition at a time. In general, timeouts that occur
1741 * close together are related anyway, so there is no benefit
1742 * in attempting to handle errors in parallel. Timeouts will
1743 * be reinstated when the recovery process ends.
1744 */
1745 if ((accb->flags & ACCB_DEVICE_RESET) == 0) {
1746 if ((accb->flags & ACCB_RELEASE_SIMQ) == 0) {
1747 xpt_freeze_simq(aha->sim, /*count*/1);
1748 accb->flags |= ACCB_RELEASE_SIMQ;
1749 }
1750
1751 ccb_h = LIST_FIRST(&aha->pending_ccbs);
1752 while (ccb_h != NULL) {
1753 struct aha_ccb *pending_accb;
1754
1755 pending_accb = (struct aha_ccb *)ccb_h->ccb_accb_ptr;
1756 callout_stop(&pending_accb->timer);
1757 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1758 }
1759 }
1760
1761 if ((accb->flags & ACCB_DEVICE_RESET) != 0
1762 || aha->cur_outbox->action_code != AMBO_FREE) {
1763 /*
1764 * Try a full host adapter/SCSI bus reset.
1765 * We do this only if we have already attempted
1766 * to clear the condition with a BDR, or we cannot
1767 * attempt a BDR for lack of mailbox resources.
1768 */
1769 ccb->ccb_h.status = CAM_CMD_TIMEOUT;
1770 ahareset(aha, /*hardreset*/TRUE);
1771 device_printf(aha->dev, "No longer in timeout\n");
1772 } else {
1773 /*
1774 * Send a Bus Device Reset message:
1775 * The target that is holding up the bus may not
1776 * be the same as the one that triggered this timeout
1777 * (different commands have different timeout lengths),
1778 * but we have no way of determining this from our
1779 * timeout handler. Our strategy here is to queue a
1780 * BDR message to the target of the timed out command.
1781 * If this fails, we'll get another timeout 2 seconds
1782 * later which will attempt a bus reset.
1783 */
1784 accb->flags |= ACCB_DEVICE_RESET;
1785 callout_reset(&accb->timer, 2 * hz, ahatimeout, accb);
1786 aha->recovery_accb->hccb.opcode = INITIATOR_BUS_DEV_RESET;
1787
1788 /* No Data Transfer */
1789 aha->recovery_accb->hccb.datain = TRUE;
1790 aha->recovery_accb->hccb.dataout = TRUE;
1791 aha->recovery_accb->hccb.ahastat = 0;
1792 aha->recovery_accb->hccb.sdstat = 0;
1793 aha->recovery_accb->hccb.target = ccb->ccb_h.target_id;
1794
1795 /* Tell the adapter about this command */
1796 paddr = ahaccbvtop(aha, aha->recovery_accb);
1797 ahautoa24(paddr, aha->cur_outbox->ccb_addr);
1798 aha->cur_outbox->action_code = AMBO_START;
1799 aha_outb(aha, COMMAND_REG, AOP_START_MBOX);
1800 ahanextoutbox(aha);
1801 }
1802 }
1803
1804 int
aha_detach(struct aha_softc * aha)1805 aha_detach(struct aha_softc *aha)
1806 {
1807 mtx_lock(&aha->lock);
1808 xpt_async(AC_LOST_DEVICE, aha->path, NULL);
1809 xpt_free_path(aha->path);
1810 xpt_bus_deregister(cam_sim_path(aha->sim));
1811 cam_sim_free(aha->sim, /*free_devq*/TRUE);
1812 mtx_unlock(&aha->lock);
1813 /* XXX: Drain all timers? */
1814 return (0);
1815 }
1816 MODULE_DEPEND(aha, cam, 1, 1, 1);
1817