Fix typo that was causing CAM_NEW_TRAN_CODE to do nothing.
[dragonfly.git] / sys / dev / disk / nata / atapi-cam.c
CommitLineData
c1b3d7c5
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1/*-
2 * Copyright (c) 2001-2003 Thomas Quinot <thomas@cuivre.fr.eu.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer,
10 * without modification, immediately at the beginning of the file.
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.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: src/sys/dev/ata/atapi-cam.c,v 1.44 2006/03/31 08:09:05 sos Exp $
405f453f 29 * $DragonFly: src/sys/dev/disk/nata/atapi-cam.c,v 1.7 2007/07/23 19:24:11 dillon Exp $
c1b3d7c5
TS
30 */
31
32#include "opt_ata.h"
d6aaf612 33#include "opt_scsi.h"
c1b3d7c5
TS
34
35#include <sys/param.h>
36#include <sys/bus.h>
37#include <sys/libkern.h>
38#include <sys/lock.h> /* for {get,rel}_mplock() */
39#include <sys/malloc.h>
40#include <sys/module.h>
41#include <sys/nata.h>
42#include <sys/spinlock.h>
43#include <sys/spinlock2.h>
44#include <sys/queue.h>
45#include <sys/systm.h>
46#include <sys/thread2.h>
47
48#include <bus/cam/cam.h>
49#include <bus/cam/cam_ccb.h>
50#include <bus/cam/cam_periph.h>
51#include <bus/cam/cam_sim.h>
52#include <bus/cam/cam_xpt_sim.h>
53#include <bus/cam/cam_debug.h>
54#include <bus/cam/scsi/scsi_all.h>
55
56#include "ata-all.h"
c1b3d7c5
TS
57#include "ata_if.h"
58
59/* private data associated with an ATA bus */
60struct atapi_xpt_softc {
61 struct ata_device atapi_cam_dev; /* must be first */
62 device_t dev;
63 device_t parent;
64 struct ata_channel *ata_ch;
65 struct cam_path *path;
66 struct cam_sim *sim;
67 int flags;
68#define BUS_REGISTERED 0x01
69#define RESOURCE_SHORTAGE 0x02
70#define DETACHING 0x04
71
72 TAILQ_HEAD(,atapi_hcb) pending_hcbs;
73 struct ata_device *atadev[2];
74 struct spinlock state_lock;
75};
76
77/* hardware command descriptor block */
78struct atapi_hcb {
79 struct atapi_xpt_softc *softc;
80 int unit;
81 int bus;
82 int target;
83 int lun;
84 union ccb *ccb;
85 int flags;
86#define QUEUED 0x0001
87#define AUTOSENSE 0x0002
88 char *dxfer_alloc;
89 TAILQ_ENTRY(atapi_hcb) chain;
90};
91
dbcd0c9b 92enum reinit_reason { ATTACH, RESET };
c1b3d7c5
TS
93
94/* Device methods */
95static void atapi_cam_identify(device_t *dev, device_t parent);
96static int atapi_cam_probe(device_t dev);
97static int atapi_cam_attach(device_t dev);
98static int atapi_cam_detach(device_t dev);
99static int atapi_cam_reinit(device_t dev);
100
101/* CAM XPT methods */
102static void atapi_action(struct cam_sim *, union ccb *);
103static void atapi_poll(struct cam_sim *);
104static void atapi_async(void *, u_int32_t, struct cam_path *, void *);
105static void atapi_cb(struct ata_request *);
106
107/* Module methods */
108static int atapi_cam_event_handler(module_t mod, int what, void *arg);
109
110/* internal functions */
111static void reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason);
112static void setup_async_cb(struct atapi_xpt_softc *, uint32_t);
113static void cam_rescan_callback(struct cam_periph *, union ccb *);
114static void cam_rescan(struct cam_sim *);
115static void free_hcb_and_ccb_done(struct atapi_hcb *, u_int32_t);
116static struct atapi_hcb *allocate_hcb(struct atapi_xpt_softc *, int, int, union ccb *);
117static void free_hcb(struct atapi_hcb *hcb);
118static void free_softc(struct atapi_xpt_softc *scp);
119
120static MALLOC_DEFINE(M_ATACAM, "ata_cam", "ATA driver CAM-XPT layer");
121
122static device_method_t atapi_cam_methods[] = {
123 DEVMETHOD(device_identify, atapi_cam_identify),
124 DEVMETHOD(device_probe, atapi_cam_probe),
125 DEVMETHOD(device_attach, atapi_cam_attach),
126 DEVMETHOD(device_detach, atapi_cam_detach),
127 DEVMETHOD(ata_reinit, atapi_cam_reinit),
128 {0, 0}
129};
130
131static driver_t atapi_cam_driver = {
132 "atapicam",
133 atapi_cam_methods,
134 sizeof(struct atapi_xpt_softc)
135};
136
137static devclass_t atapi_cam_devclass;
138DRIVER_MODULE(atapicam, ata,
139 atapi_cam_driver,
140 atapi_cam_devclass,
141 atapi_cam_event_handler,
142 /*arg*/NULL);
143MODULE_VERSION(atapicam, 1);
144MODULE_DEPEND(atapicam, ata, 1, 1, 1);
145MODULE_DEPEND(atapicam, cam, 1, 1, 1);
146
147static void
148atapi_cam_identify(device_t *dev, device_t parent)
149{
150 struct atapi_xpt_softc *scp =
a01741bb 151 kmalloc(sizeof(struct atapi_xpt_softc), M_ATACAM, M_INTWAIT|M_ZERO);
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TS
152 device_t child;
153
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154 /* Assume one atapicam instance per parent channel instance. */
155 child = device_add_child(parent, "atapicam", -1);
156 if (child == NULL) {
157 /* XXX TGEN Use device_printf()? */
e3869ec7 158 kprintf("atapi_cam_identify: out of memory, can't add child");
c1b3d7c5
TS
159 kfree(scp, M_ATACAM);
160 return;
161 }
162 scp->atapi_cam_dev.unit = -1;
163 scp->atapi_cam_dev.dev = child;
164 device_quiet(child);
165 device_set_softc(child, scp);
166}
167
168static int
169atapi_cam_probe(device_t dev)
170{
171 struct ata_device *atadev = device_get_softc (dev);
172
173 KASSERT(atadev != NULL, ("expect valid struct ata_device"));
174 if (atadev->unit < 0) {
175 device_set_desc(dev, "ATAPI CAM Attachment");
176 return(0);
177 } else {
178 return ENXIO;
179 }
180}
181
182static int
183atapi_cam_attach(device_t dev)
184{
185 struct atapi_xpt_softc *scp = NULL;
186 struct cam_devq *devq = NULL;
187 struct cam_sim *sim = NULL;
188 struct cam_path *path = NULL;
189 int unit, error;
190
191 scp = (struct atapi_xpt_softc *)device_get_softc(dev);
192 if (scp == NULL) {
193 device_printf(dev, "Cannot get softc\n");
194 return ENOMEM;
195 }
196
197 spin_init(&scp->state_lock);
198
199 scp->dev = dev;
200 scp->parent = device_get_parent(dev);
201 scp->ata_ch = device_get_softc(scp->parent);
202 TAILQ_INIT(&scp->pending_hcbs);
203 unit = device_get_unit(dev);
204
205 if ((devq = cam_simq_alloc(16)) == NULL) {
206 error = ENOMEM;
207 goto out;
208 }
209
210 if ((sim = cam_sim_alloc(atapi_action, atapi_poll, "ata",
211 (void *)scp, unit, 1, 1, devq)) == NULL) {
212 error = ENOMEM;
213 goto out;
214 }
215 scp->sim = sim;
216
217 if (xpt_bus_register(sim, 0) != CAM_SUCCESS) {
218 error = EINVAL;
219 goto out;
220 }
221 scp->flags |= BUS_REGISTERED;
222
223 if (xpt_create_path(&path, /*periph*/ NULL,
224 cam_sim_path(sim), CAM_TARGET_WILDCARD,
225 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
226 error = ENOMEM;
227 goto out;
228 }
229 scp->path = path;
230
231 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Registered SIM for ata%d\n", unit));
232
233 setup_async_cb(scp, AC_LOST_DEVICE);
dbcd0c9b 234 reinit_bus(scp, ATTACH);
c1b3d7c5
TS
235 error = 0;
236
237out:
238 if (error != 0)
239 free_softc(scp);
240
241 return(error);
242}
243
244static int
245atapi_cam_detach(device_t dev)
246{
247 struct atapi_xpt_softc *scp = device_get_softc(dev);
248
249 get_mplock();
250 xpt_freeze_simq(scp->sim, 1 /*count*/);
251 rel_mplock();
252 spin_lock_wr(&scp->state_lock);
253 scp->flags |= DETACHING;
254 spin_unlock_wr(&scp->state_lock);
255 free_softc(scp);
256 return (0);
257}
258
259static int
260atapi_cam_reinit(device_t dev) {
261 struct atapi_xpt_softc *scp = device_get_softc(dev);
262
263 /*
264 * scp might be null if the bus is being reinitialised during
265 * the boot-up sequence, before the ATAPI bus is registered.
266 */
267
268 if (scp != NULL) {
269 reinit_bus(scp, RESET);
270 }
271 return 0;
272}
273
274static void
275reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason) {
276 struct ata_device *atadev;
277 device_t *children;
278 int nchildren, i;
279
280 if (device_get_children(scp->parent, &children, &nchildren) != 0) {
281 return;
282 }
283
284 spin_lock_wr(&scp->state_lock);
285 scp->atadev[0] = NULL;
286 scp->atadev[1] = NULL;
287
288 for (i = 0; i < nchildren; i++) {
289 /* XXX Does the child need to actually be attached yet? */
290 if (children[i] != NULL) {
291 atadev = device_get_softc(children[i]);
292 if ((atadev->unit == ATA_MASTER) &&
293 (scp->ata_ch->devices & ATA_ATAPI_MASTER) != 0)
294 scp->atadev[0] = atadev;
295 if ((atadev->unit == ATA_SLAVE) &&
296 (scp->ata_ch->devices & ATA_ATAPI_SLAVE) != 0)
297 scp->atadev[1] = atadev;
298 }
299 }
300 spin_unlock_wr(&scp->state_lock);
301 kfree(children, M_TEMP);
302
303 switch (reason) {
c1b3d7c5
TS
304 case RESET:
305 xpt_async(AC_BUS_RESET, scp->path, NULL);
306 /*FALLTHROUGH*/
307 case ATTACH:
308 cam_rescan(scp->sim);
309 break;
310 }
311}
312
313static void
314setup_async_cb(struct atapi_xpt_softc *scp, uint32_t events)
315{
316 struct ccb_setasync csa;
317
318 get_mplock();
319 xpt_setup_ccb(&csa.ccb_h, scp->path, /*priority*/ 5);
320 csa.ccb_h.func_code = XPT_SASYNC_CB;
321 csa.event_enable = events;
322 csa.callback = &atapi_async;
323 csa.callback_arg = scp->sim;
324 xpt_action((union ccb *) &csa);
325 rel_mplock();
326}
327
328static void
329atapi_action(struct cam_sim *sim, union ccb *ccb)
330{
331 struct atapi_xpt_softc *softc = (struct atapi_xpt_softc*)cam_sim_softc(sim);
332 struct ccb_hdr *ccb_h = &ccb->ccb_h;
333 struct atapi_hcb *hcb = NULL;
334 struct ata_request *request = NULL;
335 int unit = cam_sim_unit(sim);
336 int bus = cam_sim_bus(sim);
337 int len;
338 char *buf;
339
340 switch (ccb_h->func_code) {
341 case XPT_PATH_INQ: {
342 struct ccb_pathinq *cpi = &ccb->cpi;
343 int tid = ccb_h->target_id;
344
345 cpi->version_num = 1;
346 cpi->hba_inquiry = 0;
347 cpi->target_sprt = 0;
348 cpi->hba_misc = PIM_NO_6_BYTE;
349 cpi->hba_eng_cnt = 0;
350 bzero(cpi->vuhba_flags, sizeof(cpi->vuhba_flags));
351 cpi->max_target = 1;
352 cpi->max_lun = 0;
353 cpi->async_flags = 0;
354 cpi->hpath_id = 0;
355 cpi->initiator_id = 7;
356 strncpy(cpi->sim_vid, "FreeBSD", sizeof(cpi->sim_vid));
357 strncpy(cpi->hba_vid, "ATAPI", sizeof(cpi->hba_vid));
358 strncpy(cpi->dev_name, cam_sim_name(sim), sizeof cpi->dev_name);
359 cpi->unit_number = cam_sim_unit(sim);
360 cpi->bus_id = cam_sim_bus(sim);
361 cpi->base_transfer_speed = 3300;
362
363 if (softc->ata_ch && tid != CAM_TARGET_WILDCARD) {
364 spin_lock_wr(&softc->state_lock);
365 if (softc->atadev[tid] == NULL) {
366 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
367 xpt_done(ccb);
368 spin_unlock_wr(&softc->state_lock);
369 return;
370 }
371 switch (softc->atadev[ccb_h->target_id]->mode) {
372 case ATA_PIO1:
373 cpi->base_transfer_speed = 5200;
374 break;
375 case ATA_PIO2:
376 cpi->base_transfer_speed = 7000;
377 break;
378 case ATA_PIO3:
379 cpi->base_transfer_speed = 11000;
380 break;
381 case ATA_PIO4:
382 case ATA_DMA:
383 case ATA_WDMA2:
384 cpi->base_transfer_speed = 16000;
385 break;
386 case ATA_UDMA2:
387 cpi->base_transfer_speed = 33000;
388 break;
389 case ATA_UDMA4:
390 cpi->base_transfer_speed = 66000;
391 break;
392 case ATA_UDMA5:
393 cpi->base_transfer_speed = 100000;
394 break;
395 case ATA_UDMA6:
396 cpi->base_transfer_speed = 133000;
397 break;
398 default:
399 break;
400 }
401 spin_unlock_wr(&softc->state_lock);
402 }
403 ccb->ccb_h.status = CAM_REQ_CMP;
404 xpt_done(ccb);
405 return;
406 }
407
408 case XPT_RESET_DEV: {
409 int tid = ccb_h->target_id;
410
411 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("dev reset\n"));
412 ata_controlcmd(softc->atadev[tid]->dev, ATA_DEVICE_RESET, 0, 0, 0);
413 ccb->ccb_h.status = CAM_REQ_CMP;
414 xpt_done(ccb);
415 return;
416 }
417
418 case XPT_RESET_BUS:
419 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("bus reset\n"));
420 ata_reinit(softc->parent);
421 ccb->ccb_h.status = CAM_REQ_CMP;
422 xpt_done(ccb);
423 return;
424
425 case XPT_SET_TRAN_SETTINGS:
426 /* ignore these, we're not doing SCSI here */
427 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
428 ("SET_TRAN_SETTINGS not supported\n"));
429 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
430 xpt_done(ccb);
431 return;
432
433 case XPT_GET_TRAN_SETTINGS: {
434 struct ccb_trans_settings *cts = &ccb->cts;
435
436 /*
437 * XXX The default CAM transport code is very SCSI-specific and
438 * doesn't understand IDE speeds very well. Be silent about it
439 * here and let it default to what is set in XPT_PATH_INQ
440 */
441 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("GET_TRAN_SETTINGS\n"));
442 cts->valid = (CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID);
443 cts->flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
444 ccb->ccb_h.status = CAM_REQ_CMP;
445 xpt_done(ccb);
446 return;
447 }
448
449 case XPT_CALC_GEOMETRY: {
450 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("CALC_GEOMETRY\n"));
451 cam_calc_geometry(&ccb->ccg, /*extended*/1);
452 xpt_done(ccb);
453 return;
454 }
455
456 case XPT_SCSI_IO: {
457 struct ccb_scsiio *csio = &ccb->csio;
458 int tid = ccb_h->target_id, lid = ccb_h->target_lun;
459 int request_flags = ATA_R_QUIET | ATA_R_ATAPI;
460
461 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, ("XPT_SCSI_IO\n"));
462
463 spin_lock_wr(&softc->state_lock);
464 if (softc->flags & DETACHING) {
465 ccb->ccb_h.status = CAM_REQ_ABORTED;
466 xpt_done(ccb);
467 spin_unlock_wr(&softc->state_lock);
468 return;
469 }
470
471 if (softc->atadev[tid] == NULL) {
472 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
473 xpt_done(ccb);
474 spin_unlock_wr(&softc->state_lock);
475 return;
476 }
477
478 /* check that this request was not aborted already */
479 if ((ccb_h->status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
e3869ec7 480 kprintf("XPT_SCSI_IO received but already in progress?\n");
c1b3d7c5
TS
481 xpt_done(ccb);
482 spin_unlock_wr(&softc->state_lock);
483 return;
484 }
485 if (lid > 0) {
486 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
487 ("SCSI IO received for invalid lun %d\n", lid));
488 goto action_invalid;
489 }
490 if (csio->cdb_len > sizeof request->u.atapi.ccb) {
491 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
492 ("CAM CCB too long for ATAPI"));
493 goto action_invalid;
494 }
495 if ((ccb_h->flags & CAM_SCATTER_VALID)) {
496 /* scatter-gather not supported */
497 xpt_print_path(ccb_h->path);
e3869ec7 498 kprintf("ATAPI/CAM does not support scatter-gather yet!\n");
c1b3d7c5
TS
499 goto action_invalid;
500 }
501
502 switch (ccb_h->flags & CAM_DIR_MASK) {
503 case CAM_DIR_IN:
504 request_flags |= ATA_R_READ|ATA_R_DMA;
505 break;
506 case CAM_DIR_OUT:
507 request_flags |= ATA_R_WRITE|ATA_R_DMA;
508 break;
509 case CAM_DIR_NONE:
510 /* No flags need to be set */
511 break;
512 default:
513 device_printf(softc->dev, "unknown IO operation\n");
514 goto action_invalid;
515 }
516 if (softc->atadev[tid]->mode < ATA_DMA)
517 request_flags &= ~ATA_R_DMA;
518
519 if ((hcb = allocate_hcb(softc, unit, bus, ccb)) == NULL) {
e3869ec7 520 kprintf("cannot allocate ATAPI/CAM hcb\n");
c1b3d7c5
TS
521 goto action_oom;
522 }
523 if ((request = ata_alloc_request()) == NULL) {
e3869ec7 524 kprintf("cannot allocate ATAPI/CAM request\n");
c1b3d7c5
TS
525 goto action_oom;
526 }
527
528 bcopy((ccb_h->flags & CAM_CDB_POINTER) ?
529 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes,
530 request->u.atapi.ccb, csio->cdb_len);
531#ifdef CAMDEBUG
532 if (CAM_DEBUGGED(ccb_h->path, CAM_DEBUG_CDB)) {
533 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
534
e3869ec7 535 kprintf("atapi_action: hcb@%p: %s\n", hcb,
c1b3d7c5
TS
536 scsi_cdb_string(request->u.atapi.ccb, cdb_str, sizeof(cdb_str)));
537 }
538#endif
539
540 len = csio->dxfer_len;
541 buf = csio->data_ptr;
542
543 /* some SCSI commands require special processing */
544 switch (request->u.atapi.ccb[0]) {
545 case INQUIRY: {
546 /*
547 * many ATAPI devices seem to report more than
548 * SHORT_INQUIRY_LENGTH bytes of available INQUIRY
549 * information, but respond with some incorrect condition
550 * when actually asked for it, so we are going to pretend
551 * that only SHORT_INQUIRY_LENGTH are expected, anyway.
552 */
553 struct scsi_inquiry *inq = (struct scsi_inquiry *) &request->u.atapi.ccb[0];
554
555 if (inq->byte2 == 0 && inq->page_code == 0 &&
556 inq->length > SHORT_INQUIRY_LENGTH) {
557 bzero(buf, len);
558 len = inq->length = SHORT_INQUIRY_LENGTH;
559 }
560 break;
561 }
562 case READ_6:
563 /* FALLTHROUGH */
564
565 case WRITE_6:
566 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
567 ("Translating %s into _10 equivalent\n",
568 (request->u.atapi.ccb[0] == READ_6) ? "READ_6" : "WRITE_6"));
569 request->u.atapi.ccb[0] |= 0x20;
570 request->u.atapi.ccb[9] = request->u.atapi.ccb[5];
571 request->u.atapi.ccb[8] = request->u.atapi.ccb[4];
572 request->u.atapi.ccb[7] = 0;
573 request->u.atapi.ccb[6] = 0;
574 request->u.atapi.ccb[5] = request->u.atapi.ccb[3];
575 request->u.atapi.ccb[4] = request->u.atapi.ccb[2];
576 request->u.atapi.ccb[3] = request->u.atapi.ccb[1] & 0x1f;
577 request->u.atapi.ccb[2] = 0;
578 request->u.atapi.ccb[1] = 0;
579 break;
580 }
581
582 if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN && (len & 1)) {
583 /* ATA always transfers an even number of bytes */
a01741bb
MD
584 buf = hcb->dxfer_alloc =
585 kmalloc(++len, M_ATACAM, M_INTWAIT | M_ZERO);
c1b3d7c5
TS
586 }
587 request->dev = softc->atadev[tid]->dev;
588 request->driver = hcb;
589 request->data = buf;
590 request->bytecount = len;
405f453f
MD
591 request->transfersize = min(request->bytecount,
592 min(softc->ata_ch->dma->max_iosize, 65534));
c1b3d7c5
TS
593 request->timeout = ccb_h->timeout / 1000; /* XXX lost granularity */
594 request->retries = 2;
595 request->callback = &atapi_cb;
596 request->flags = request_flags;
597
598 TAILQ_INSERT_TAIL(&softc->pending_hcbs, hcb, chain);
599 hcb->flags |= QUEUED;
600 ccb_h->status |= CAM_SIM_QUEUED;
601 spin_unlock_wr(&softc->state_lock);
602
603 ata_queue_request(request);
604 return;
605 }
606
607 default:
608 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
609 ("unsupported function code 0x%02x\n", ccb_h->func_code));
610 goto action_invalid;
611 }
612
613 /* NOTREACHED */
614
615action_oom:
616 if (request != NULL)
617 ata_free_request(request);
618 if (hcb != NULL)
619 free_hcb(hcb);
620 spin_unlock_wr(&softc->state_lock);
621 get_mplock();
622 xpt_print_path(ccb_h->path);
e3869ec7 623 kprintf("out of memory, freezing queue.\n");
c1b3d7c5
TS
624 softc->flags |= RESOURCE_SHORTAGE;
625 xpt_freeze_simq(sim, /*count*/ 1);
626 rel_mplock();
627 ccb_h->status = CAM_REQUEUE_REQ;
628 xpt_done(ccb);
629 return;
630
631action_invalid:
632 spin_unlock_wr(&softc->state_lock);
633 ccb_h->status = CAM_REQ_INVALID;
634 xpt_done(ccb);
635 return;
636}
637
638static void
639atapi_poll(struct cam_sim *sim)
640{
641 /* do nothing - we do not actually service any interrupts */
e3869ec7 642 kprintf("atapi_poll called!\n");
c1b3d7c5
TS
643}
644
645static void
646atapi_cb(struct ata_request *request)
647{
648 struct atapi_xpt_softc *scp;
649 struct atapi_hcb *hcb;
650 struct ccb_scsiio *csio;
651 u_int32_t rc;
652
653 hcb = (struct atapi_hcb *)request->driver;
654 scp = hcb->softc;
655 csio = &hcb->ccb->csio;
656
657#ifdef CAMDEBUG
658# define err (request->u.atapi.sense.key)
659 if (CAM_DEBUGGED(csio->ccb_h.path, CAM_DEBUG_CDB)) {
e3869ec7 660 kprintf("atapi_cb: hcb@%p error = %02x: (sk = %02x%s%s%s)\n",
c1b3d7c5
TS
661 hcb, err, err >> 4,
662 (err & 4) ? " ABRT" : "",
663 (err & 2) ? " EOM" : "",
664 (err & 1) ? " ILI" : "");
e3869ec7 665 kprintf("dev %s: cmd %02x status %02x result %02x\n",
c1b3d7c5
TS
666 device_get_nameunit(request->dev), request->u.atapi.ccb[0],
667 request->status, request->result);
668 }
669#endif
670
671 if ((hcb->flags & AUTOSENSE) != 0) {
672 rc = CAM_SCSI_STATUS_ERROR;
673 if (request->result == 0) {
674 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
675 }
676 } else if (request->result != 0) {
677 rc = CAM_SCSI_STATUS_ERROR;
678 csio->scsi_status = SCSI_STATUS_CHECK_COND;
679
680 if ((csio->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0) {
681#if 0
682 static const int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
683 sizeof(struct atapi_sense), 0, 0, 0, 0, 0, 0,
684 0, 0, 0, 0, 0 };
685
686 bcopy (ccb, request->u.atapi.ccb, sizeof ccb);
687 request->data = (caddr_t)&csio->sense_data;
688 request->bytecount = sizeof(struct atapi_sense);
689 request->transfersize = min(request->bytecount, 65534);
690 request->timeout = csio->ccb_h.timeout / 1000;
691 request->retries = 2;
692 request->flags = ATA_R_QUIET|ATA_R_ATAPI|ATA_R_IMMEDIATE;
693 hcb->flags |= AUTOSENSE;
694
695 ata_queue_request(request);
696 return;
697#else
698 /* The ATA driver has already requested sense for us. */
699 if (request->error == 0) {
700 /* The ATA autosense suceeded. */
701 bcopy (&request->u.atapi.sense, &csio->sense_data, sizeof(struct atapi_sense));
702 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
703 }
704#endif
705 }
706 } else {
707 rc = CAM_REQ_CMP;
708 csio->scsi_status = SCSI_STATUS_OK;
709 if (((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) &&
710 hcb->dxfer_alloc != NULL)
711 {
712 bcopy(hcb->dxfer_alloc, csio->data_ptr, csio->dxfer_len);
713 }
714 }
715
716 spin_lock_wr(&scp->state_lock);
717 free_hcb_and_ccb_done(hcb, rc);
718 spin_unlock_wr(&scp->state_lock);
719
720 ata_free_request(request);
721}
722
723static void
724free_hcb_and_ccb_done(struct atapi_hcb *hcb, u_int32_t status)
725{
726 struct atapi_xpt_softc *softc;
727 union ccb *ccb;
728
729 if (hcb == NULL)
730 return;
731
732 softc = hcb->softc;
733 ccb = hcb->ccb;
734
735 /* we're about to free a hcb, so the shortage has ended */
736 if (softc->flags & RESOURCE_SHORTAGE) {
737 softc->flags &= ~RESOURCE_SHORTAGE;
738 status |= CAM_RELEASE_SIMQ;
739 }
740 free_hcb(hcb);
741 ccb->ccb_h.status =
742 status | (ccb->ccb_h.status & ~(CAM_STATUS_MASK | CAM_SIM_QUEUED));
743 xpt_done(ccb);
744}
745
746static void
747atapi_async(void *callback_arg, u_int32_t code,
748 struct cam_path* path, void *arg)
749{
750 struct atapi_xpt_softc *softc;
751 struct cam_sim *sim;
752 int targ;
753
754 crit_enter();
755
756 sim = (struct cam_sim *) callback_arg;
757 softc = (struct atapi_xpt_softc *) cam_sim_softc(sim);
758 switch (code) {
759 case AC_LOST_DEVICE:
760 targ = xpt_path_target_id(path);
761 xpt_print_path(path);
762 if (targ == -1)
e3869ec7 763 kprintf("Lost host adapter\n");
c1b3d7c5 764 else
e3869ec7 765 kprintf("Lost target %d???\n", targ);
c1b3d7c5
TS
766 break;
767
768 default:
769 break;
770 }
771
772 crit_exit();
773}
774
775static void
776cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
777{
778 if (ccb->ccb_h.status != CAM_REQ_CMP) {
779 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
780 ("Rescan failed, 0x%04x\n", ccb->ccb_h.status));
781 } else {
782 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
783 ("Rescan succeeded\n"));
784 }
785 xpt_free_path(ccb->ccb_h.path);
786 kfree(ccb, M_ATACAM);
787}
788
789static void
790cam_rescan(struct cam_sim *sim)
791{
792 struct cam_path *path;
793 union ccb *ccb = kmalloc(sizeof(union ccb), M_ATACAM, M_WAITOK | M_ZERO);
794
795 get_mplock();
796 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sim),
797 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
798 rel_mplock();
799 kfree(ccb, M_ATACAM);
800 return;
801 }
802
803 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("Rescanning ATAPI bus.\n"));
804 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
805 ccb->ccb_h.func_code = XPT_SCAN_BUS;
806 ccb->ccb_h.cbfcnp = cam_rescan_callback;
807 ccb->crcn.flags = CAM_FLAG_NONE;
808 xpt_action(ccb);
809 /* scan is in progress now */
810 rel_mplock();
811}
812
813static struct atapi_hcb *
814allocate_hcb(struct atapi_xpt_softc *softc, int unit, int bus, union ccb *ccb)
815{
816 struct atapi_hcb *hcb = (struct atapi_hcb *)
a01741bb 817 kmalloc(sizeof(struct atapi_hcb), M_ATACAM, M_INTWAIT | M_ZERO);
c1b3d7c5 818
a01741bb
MD
819 hcb->softc = softc;
820 hcb->unit = unit;
821 hcb->bus = bus;
822 hcb->ccb = ccb;
c1b3d7c5
TS
823 return hcb;
824}
825
826static void
827free_hcb(struct atapi_hcb *hcb)
828{
829 if ((hcb->flags & QUEUED) != 0)
830 TAILQ_REMOVE(&hcb->softc->pending_hcbs, hcb, chain);
831 if (hcb->dxfer_alloc != NULL)
832 kfree(hcb->dxfer_alloc, M_ATACAM);
833 kfree(hcb, M_ATACAM);
834}
835
836static void
837free_softc(struct atapi_xpt_softc *scp)
838{
839 struct atapi_hcb *hcb;
840
841 if (scp != NULL) {
842 spin_lock_wr(&scp->state_lock);
843 TAILQ_FOREACH(hcb, &scp->pending_hcbs, chain) {
844 free_hcb_and_ccb_done(hcb, CAM_UNREC_HBA_ERROR);
845 }
846 spin_unlock_wr(&scp->state_lock);
847 get_mplock();
848 if (scp->path != NULL) {
849 setup_async_cb(scp, 0);
850 xpt_free_path(scp->path);
851 }
852 if ((scp->flags & BUS_REGISTERED) != 0) {
853 if (xpt_bus_deregister(cam_sim_path(scp->sim)) == CAM_REQ_CMP)
854 scp->flags &= ~BUS_REGISTERED;
855 }
856 if (scp->sim != NULL) {
857 if ((scp->flags & BUS_REGISTERED) == 0)
d6aaf612 858 cam_sim_free(scp->sim);
c1b3d7c5 859 else
e3869ec7 860 kprintf("Can't free %s SIM (still registered)\n",
c1b3d7c5
TS
861 cam_sim_name(scp->sim));
862 }
863 rel_mplock();
864 spin_uninit(&scp->state_lock);
865 }
866}
867
868static int
869atapi_cam_event_handler(module_t mod, int what, void *arg) {
870 device_t *devlist;
871 int devcount;
872
873 switch (what) {
874 case MOD_UNLOAD:
875 if (devclass_get_devices(atapi_cam_devclass, &devlist, &devcount)
876 != 0)
877 return ENXIO;
878 if (devlist != NULL) {
879 while (devlist != NULL && devcount > 0) {
880 device_t child = devlist[--devcount];
881 struct atapi_xpt_softc *scp = device_get_softc(child);
882
883 device_delete_child(device_get_parent(child),child);
884 if (scp != NULL)
885 kfree(scp, M_ATACAM);
886 }
887 kfree(devlist, M_TEMP);
888 }
889 break;
890
891 default:
892 break;
893 }
894 return 0;
895}