2 * Copyright (c) 2001-2003 Thomas Quinot <thomas@cuivre.fr.eu.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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.
28 * $FreeBSD: src/sys/dev/ata/atapi-cam.c,v 1.44 2006/03/31 08:09:05 sos Exp $
34 #include <sys/param.h>
36 #include <sys/libkern.h>
37 #include <sys/lock.h> /* for {get,rel}_mplock() */
38 #include <sys/malloc.h>
39 #include <sys/module.h>
41 #include <sys/queue.h>
42 #include <sys/systm.h>
44 #include <sys/thread2.h>
45 #include <sys/mplock2.h>
47 #include <bus/cam/cam.h>
48 #include <bus/cam/cam_ccb.h>
49 #include <bus/cam/cam_periph.h>
50 #include <bus/cam/cam_sim.h>
51 #include <bus/cam/cam_xpt_sim.h>
52 #include <bus/cam/cam_debug.h>
53 #include <bus/cam/scsi/scsi_all.h>
58 /* private data associated with an ATA bus */
59 struct atapi_xpt_softc {
60 struct ata_device atapi_cam_dev; /* must be first */
63 struct ata_channel *ata_ch;
64 struct cam_path *path;
67 #define BUS_REGISTERED 0x01
68 #define RESOURCE_SHORTAGE 0x02
69 #define DETACHING 0x04
71 TAILQ_HEAD(,atapi_hcb) pending_hcbs;
72 struct ata_device *atadev[2];
73 struct lock state_lock;
76 /* hardware command descriptor block */
78 struct atapi_xpt_softc *softc;
86 #define AUTOSENSE 0x0002
88 TAILQ_ENTRY(atapi_hcb) chain;
91 enum reinit_reason { ATTACH, RESET };
94 static void atapi_cam_identify(device_t *dev, device_t parent);
95 static int atapi_cam_probe(device_t dev);
96 static int atapi_cam_attach(device_t dev);
97 static int atapi_cam_detach(device_t dev);
98 static int atapi_cam_reinit(device_t dev);
100 /* CAM XPT methods */
101 static void atapi_action(struct cam_sim *, union ccb *);
102 static void atapi_poll(struct cam_sim *);
103 static void atapi_async(void *, u_int32_t, struct cam_path *, void *);
104 static void atapi_cb(struct ata_request *);
107 static int atapi_cam_event_handler(module_t mod, int what, void *arg);
109 /* internal functions */
110 static void reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason);
111 static void setup_async_cb(struct atapi_xpt_softc *, uint32_t);
112 static void cam_rescan_callback(struct cam_periph *, union ccb *);
113 static void cam_rescan(struct cam_sim *);
114 static void free_hcb_and_ccb_done(struct atapi_hcb *, u_int32_t);
115 static struct atapi_hcb *allocate_hcb(struct atapi_xpt_softc *, int, int, union ccb *);
116 static void free_hcb(struct atapi_hcb *hcb);
117 static void free_softc(struct atapi_xpt_softc *scp);
119 static MALLOC_DEFINE(M_ATACAM, "ata_cam", "ATA driver CAM-XPT layer");
121 static device_method_t atapi_cam_methods[] = {
122 DEVMETHOD(device_identify, atapi_cam_identify),
123 DEVMETHOD(device_probe, atapi_cam_probe),
124 DEVMETHOD(device_attach, atapi_cam_attach),
125 DEVMETHOD(device_detach, atapi_cam_detach),
126 DEVMETHOD(ata_reinit, atapi_cam_reinit),
130 static driver_t atapi_cam_driver = {
133 sizeof(struct atapi_xpt_softc)
136 static devclass_t atapi_cam_devclass;
137 DRIVER_MODULE(atapicam, ata,
140 atapi_cam_event_handler,
142 MODULE_VERSION(atapicam, 1);
143 MODULE_DEPEND(atapicam, ata, 1, 1, 1);
144 MODULE_DEPEND(atapicam, cam, 1, 1, 1);
147 atapi_cam_identify(device_t *dev, device_t parent)
149 struct atapi_xpt_softc *scp =
150 kmalloc(sizeof(struct atapi_xpt_softc), M_ATACAM, M_INTWAIT|M_ZERO);
154 kprintf ("atapi_cam_identify: out of memory");
158 /* Assume one atapicam instance per parent channel instance. */
159 child = device_add_child(parent, "atapicam", -1);
161 kprintf("atapi_cam_identify: out of memory, can't add child");
162 kfree(scp, M_ATACAM);
165 scp->atapi_cam_dev.unit = -1;
166 scp->atapi_cam_dev.dev = child;
168 device_set_softc(child, scp);
172 atapi_cam_probe(device_t dev)
174 struct ata_device *atadev = device_get_softc (dev);
176 KASSERT(atadev != NULL, ("expect valid struct ata_device"));
177 if (atadev->unit < 0) {
178 device_set_desc(dev, "ATAPI CAM Attachment");
186 atapi_cam_attach(device_t dev)
188 struct atapi_xpt_softc *scp = NULL;
189 struct cam_devq *devq = NULL;
190 struct cam_sim *sim = NULL;
191 struct cam_path *path = NULL;
194 scp = (struct atapi_xpt_softc *)device_get_softc(dev);
196 device_printf(dev, "Cannot get softc\n");
200 lockinit(&scp->state_lock, "atapicamattach", 0, 0);
203 scp->parent = device_get_parent(dev);
204 scp->ata_ch = device_get_softc(scp->parent);
205 TAILQ_INIT(&scp->pending_hcbs);
206 unit = device_get_unit(dev);
208 if ((devq = cam_simq_alloc(16)) == NULL) {
213 if ((sim = cam_sim_alloc(atapi_action, atapi_poll, "ata",
214 (void *)scp, unit, &sim_mplock, 1, 1, devq)) == NULL) {
220 if (xpt_bus_register(sim, 0) != CAM_SUCCESS) {
224 scp->flags |= BUS_REGISTERED;
226 if (xpt_create_path(&path, /*periph*/ NULL,
227 cam_sim_path(sim), CAM_TARGET_WILDCARD,
228 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
234 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Registered SIM for ata%d\n", unit));
236 setup_async_cb(scp, AC_LOST_DEVICE);
237 reinit_bus(scp, ATTACH);
248 atapi_cam_detach(device_t dev)
250 struct atapi_xpt_softc *scp = device_get_softc(dev);
253 xpt_freeze_simq(scp->sim, 1 /*count*/);
255 lockmgr(&scp->state_lock, LK_EXCLUSIVE);
256 scp->flags |= DETACHING;
257 lockmgr(&scp->state_lock, LK_RELEASE);
263 atapi_cam_reinit(device_t dev) {
264 struct atapi_xpt_softc *scp = device_get_softc(dev);
267 * scp might be null if the bus is being reinitialised during
268 * the boot-up sequence, before the ATAPI bus is registered.
272 reinit_bus(scp, RESET);
278 reinit_bus(struct atapi_xpt_softc *scp, enum reinit_reason reason) {
279 struct ata_device *old_atadev[2], *atadev;
281 int nchildren, i, dev_changed;
283 if (device_get_children(scp->parent, &children, &nchildren) != 0) {
287 lockmgr(&scp->state_lock, LK_EXCLUSIVE);
288 old_atadev[0] = scp->atadev[0];
289 old_atadev[1] = scp->atadev[1];
290 scp->atadev[0] = NULL;
291 scp->atadev[1] = NULL;
293 for (i = 0; i < nchildren; i++) {
294 /* XXX Does the child need to actually be attached yet? */
295 if (children[i] != NULL) {
296 atadev = device_get_softc(children[i]);
297 if ((atadev->unit == ATA_MASTER) &&
298 (scp->ata_ch->devices & ATA_ATAPI_MASTER) != 0)
299 scp->atadev[0] = atadev;
300 if ((atadev->unit == ATA_SLAVE) &&
301 (scp->ata_ch->devices & ATA_ATAPI_SLAVE) != 0)
302 scp->atadev[1] = atadev;
305 dev_changed = (old_atadev[0] != scp->atadev[0])
306 || (old_atadev[1] != scp->atadev[1]);
307 lockmgr(&scp->state_lock, LK_RELEASE);
308 kfree(children, M_TEMP);
312 xpt_async(AC_BUS_RESET, scp->path, NULL);
319 cam_rescan(scp->sim);
325 setup_async_cb(struct atapi_xpt_softc *scp, uint32_t events)
327 struct ccb_setasync csa;
330 xpt_setup_ccb(&csa.ccb_h, scp->path, /*priority*/ 5);
331 csa.ccb_h.func_code = XPT_SASYNC_CB;
332 csa.event_enable = events;
333 csa.callback = &atapi_async;
334 csa.callback_arg = scp->sim;
335 xpt_action((union ccb *) &csa);
340 atapi_action(struct cam_sim *sim, union ccb *ccb)
342 struct atapi_xpt_softc *softc = (struct atapi_xpt_softc*)cam_sim_softc(sim);
343 struct ccb_hdr *ccb_h = &ccb->ccb_h;
344 struct atapi_hcb *hcb = NULL;
345 struct ata_request *request = NULL;
346 int unit = cam_sim_unit(sim);
347 int bus = cam_sim_bus(sim);
351 switch (ccb_h->func_code) {
353 struct ccb_pathinq *cpi = &ccb->cpi;
354 int tid = ccb_h->target_id;
356 cpi->version_num = 1;
357 cpi->hba_inquiry = 0;
358 cpi->target_sprt = 0;
359 cpi->hba_misc = PIM_NO_6_BYTE;
360 cpi->hba_eng_cnt = 0;
361 bzero(cpi->vuhba_flags, sizeof(cpi->vuhba_flags));
364 cpi->async_flags = 0;
366 cpi->initiator_id = 7;
367 strncpy(cpi->sim_vid, "FreeBSD", sizeof(cpi->sim_vid));
368 strncpy(cpi->hba_vid, "ATAPI", sizeof(cpi->hba_vid));
369 strncpy(cpi->dev_name, cam_sim_name(sim), sizeof cpi->dev_name);
370 cpi->unit_number = cam_sim_unit(sim);
371 cpi->bus_id = cam_sim_bus(sim);
372 cpi->base_transfer_speed = 3300;
373 cpi->transport = XPORT_ATA;
374 cpi->transport_version = 2;
375 cpi->protocol = PROTO_SCSI;
376 cpi->protocol_version = SCSI_REV_2;
378 if (softc->ata_ch && tid != CAM_TARGET_WILDCARD) {
379 lockmgr(&softc->state_lock, LK_EXCLUSIVE);
380 if (softc->atadev[tid] == NULL) {
381 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
383 lockmgr(&softc->state_lock, LK_RELEASE);
386 switch (softc->atadev[ccb_h->target_id]->mode) {
388 cpi->base_transfer_speed = 5200;
391 cpi->base_transfer_speed = 7000;
394 cpi->base_transfer_speed = 11000;
399 cpi->base_transfer_speed = 16000;
402 cpi->base_transfer_speed = 33000;
405 cpi->base_transfer_speed = 66000;
408 cpi->base_transfer_speed = 100000;
411 cpi->base_transfer_speed = 133000;
416 lockmgr(&softc->state_lock, LK_RELEASE);
418 ccb->ccb_h.status = CAM_REQ_CMP;
423 case XPT_RESET_DEV: {
424 int tid = ccb_h->target_id;
426 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("dev reset\n"));
427 ata_controlcmd(softc->atadev[tid]->dev, ATA_DEVICE_RESET, 0, 0, 0);
428 ccb->ccb_h.status = CAM_REQ_CMP;
434 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("bus reset\n"));
435 ata_reinit(softc->parent);
436 ccb->ccb_h.status = CAM_REQ_CMP;
440 case XPT_SET_TRAN_SETTINGS:
441 /* ignore these, we're not doing SCSI here */
442 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE,
443 ("SET_TRAN_SETTINGS not supported\n"));
444 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
448 case XPT_GET_TRAN_SETTINGS: {
449 struct ccb_trans_settings *cts = &ccb->cts;
450 cts->protocol = PROTO_SCSI;
451 cts->protocol_version = SCSI_REV_2;
452 cts->transport = XPORT_ATA;
453 cts->transport_version = XPORT_VERSION_UNSPECIFIED;
454 cts->proto_specific.valid = 0;
455 cts->xport_specific.valid = 0;
456 /* nothing more to do */
457 ccb->ccb_h.status = CAM_REQ_CMP;
458 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("GET_TRAN_SETTINGS\n"));
463 case XPT_CALC_GEOMETRY: {
464 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_SUBTRACE, ("CALC_GEOMETRY\n"));
465 cam_calc_geometry(&ccb->ccg, /*extended*/1);
471 struct ccb_scsiio *csio = &ccb->csio;
472 int tid = ccb_h->target_id, lid = ccb_h->target_lun;
473 int request_flags = ATA_R_QUIET | ATA_R_ATAPI;
475 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE, ("XPT_SCSI_IO\n"));
477 lockmgr(&softc->state_lock, LK_EXCLUSIVE);
478 if (softc->flags & DETACHING) {
479 ccb->ccb_h.status = CAM_REQ_ABORTED;
481 lockmgr(&softc->state_lock, LK_RELEASE);
485 if (softc->atadev[tid] == NULL) {
486 ccb->ccb_h.status = CAM_DEV_NOT_THERE;
488 lockmgr(&softc->state_lock, LK_RELEASE);
492 /* check that this request was not aborted already */
493 if ((ccb_h->status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
494 kprintf("XPT_SCSI_IO received but already in progress?\n");
496 lockmgr(&softc->state_lock, LK_RELEASE);
500 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
501 ("SCSI IO received for invalid lun %d\n", lid));
504 if (csio->cdb_len > sizeof request->u.atapi.ccb) {
505 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
506 ("CAM CCB too long for ATAPI"));
509 if ((ccb_h->flags & CAM_SCATTER_VALID)) {
510 /* scatter-gather not supported */
511 xpt_print_path(ccb_h->path);
512 kprintf("ATAPI/CAM does not support scatter-gather yet!\n");
516 switch (ccb_h->flags & CAM_DIR_MASK) {
518 request_flags |= ATA_R_READ;
521 request_flags |= ATA_R_WRITE;
524 /* No flags need to be set */
527 device_printf(softc->dev, "unknown IO operation\n");
531 if ((hcb = allocate_hcb(softc, unit, bus, ccb)) == NULL) {
532 kprintf("cannot allocate ATAPI/CAM hcb\n");
535 if ((request = ata_alloc_request()) == NULL) {
536 kprintf("cannot allocate ATAPI/CAM request\n");
540 bcopy((ccb_h->flags & CAM_CDB_POINTER) ?
541 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes,
542 request->u.atapi.ccb, csio->cdb_len);
544 if (CAM_DEBUGGED(ccb_h->path, CAM_DEBUG_CDB)) {
545 char cdb_str[(SCSI_MAX_CDBLEN * 3) + 1];
547 kprintf("atapi_action: hcb@%p: %s\n", hcb,
548 scsi_cdb_string(request->u.atapi.ccb, cdb_str, sizeof(cdb_str)));
550 if (CAM_DEBUGGED(ccb_h->path, CAM_DEBUG_SUBTRACE)) {
551 request_flags |= ATA_R_DEBUG;
555 len = csio->dxfer_len;
556 buf = csio->data_ptr;
558 /* some SCSI commands require special processing */
559 switch (request->u.atapi.ccb[0]) {
562 * many ATAPI devices seem to report more than
563 * SHORT_INQUIRY_LENGTH bytes of available INQUIRY
564 * information, but respond with some incorrect condition
565 * when actually asked for it, so we are going to pretend
566 * that only SHORT_INQUIRY_LENGTH are expected, anyway.
568 struct scsi_inquiry *inq = (struct scsi_inquiry *) &request->u.atapi.ccb[0];
570 if (inq->byte2 == 0 && inq->page_code == 0 &&
571 inq->length > SHORT_INQUIRY_LENGTH) {
573 len = inq->length = SHORT_INQUIRY_LENGTH;
581 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
582 ("Translating %s into _10 equivalent\n",
583 (request->u.atapi.ccb[0] == READ_6) ? "READ_6" : "WRITE_6"));
584 request->u.atapi.ccb[0] |= 0x20;
585 request->u.atapi.ccb[9] = request->u.atapi.ccb[5];
586 request->u.atapi.ccb[8] = request->u.atapi.ccb[4];
587 request->u.atapi.ccb[7] = 0;
588 request->u.atapi.ccb[6] = 0;
589 request->u.atapi.ccb[5] = request->u.atapi.ccb[3];
590 request->u.atapi.ccb[4] = request->u.atapi.ccb[2];
591 request->u.atapi.ccb[3] = request->u.atapi.ccb[1] & 0x1f;
592 request->u.atapi.ccb[2] = 0;
593 request->u.atapi.ccb[1] = 0;
597 if ((ccb_h->flags & CAM_DIR_MASK) == CAM_DIR_IN && (len & 1)) {
598 /* ATA always transfers an even number of bytes */
599 if ((buf = hcb->dxfer_alloc
600 = kmalloc(++len, M_ATACAM, M_INTWAIT | M_ZERO)) == NULL) {
601 kprintf("cannot allocate ATAPI/CAM buffer\n");
607 * Don't allow DMA for requests with length not multiple of 16 bytes.
608 * Some ATAPI devices don't like it.
610 if ((softc->atadev[tid]->mode >= ATA_DMA) && len > 0 && !(len & 15))
611 request_flags |= ATA_R_DMA;
613 request->dev = softc->atadev[tid]->dev;
614 request->driver = hcb;
616 request->bytecount = len;
617 request->transfersize = min(request->bytecount,
618 min(softc->ata_ch->dma->max_iosize, 65534));
619 request->timeout = ccb_h->timeout / 1000; /* XXX lost granularity */
620 request->callback = &atapi_cb;
621 request->flags = request_flags;
624 * no retries are to be performed at the ATA level; any retries
625 * will be done by CAM .
627 request->retries = 0;
629 TAILQ_INSERT_TAIL(&softc->pending_hcbs, hcb, chain);
630 hcb->flags |= QUEUED;
631 ccb_h->status |= CAM_SIM_QUEUED;
632 lockmgr(&softc->state_lock, LK_RELEASE);
634 ata_queue_request(request);
639 CAM_DEBUG(ccb_h->path, CAM_DEBUG_SUBTRACE,
640 ("unsupported function code 0x%02x\n", ccb_h->func_code));
648 ata_free_request(request);
651 lockmgr(&softc->state_lock, LK_RELEASE);
653 xpt_print_path(ccb_h->path);
654 kprintf("out of memory, freezing queue.\n");
655 softc->flags |= RESOURCE_SHORTAGE;
656 xpt_freeze_simq(sim, /*count*/ 1);
658 ccb_h->status = CAM_REQUEUE_REQ;
663 lockmgr(&softc->state_lock, LK_RELEASE);
664 ccb_h->status = CAM_REQ_INVALID;
670 atapi_poll(struct cam_sim *sim)
672 /* do nothing - we do not actually service any interrupts */
673 kprintf("atapi_poll called!\n");
677 atapi_cb(struct ata_request *request)
679 struct atapi_xpt_softc *scp;
680 struct atapi_hcb *hcb;
681 struct ccb_scsiio *csio;
684 hcb = (struct atapi_hcb *)request->driver;
686 csio = &hcb->ccb->csio;
689 # define err (request->u.atapi.sense.key)
690 if (CAM_DEBUGGED(csio->ccb_h.path, CAM_DEBUG_CDB)) {
691 kprintf("atapi_cb: hcb@%p sense = %02x: sk = %01x%s%s%s\n",
692 hcb, err, err & 0x0f,
693 (err & 0x80) ? ", Filemark" : "",
694 (err & 0x40) ? ", EOM" : "",
695 (err & 0x20) ? ", ILI" : "");
696 device_printf(request->dev,
697 "cmd %s status %02x result %02x error %02x\n",
698 ata_cmd2str(request),
699 request->status, request->result, request->error);
703 if ((hcb->flags & AUTOSENSE) != 0) {
704 rc = CAM_SCSI_STATUS_ERROR;
705 if (request->result == 0) {
706 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
708 } else if (request->result != 0) {
709 if ((request->flags & ATA_R_TIMEOUT) != 0) {
710 rc = CAM_CMD_TIMEOUT;
712 rc = CAM_SCSI_STATUS_ERROR;
713 csio->scsi_status = SCSI_STATUS_CHECK_COND;
715 if ((csio->ccb_h.flags & CAM_DIS_AUTOSENSE) == 0) {
717 static const int8_t ccb[16] = { ATAPI_REQUEST_SENSE, 0, 0, 0,
718 sizeof(struct atapi_sense), 0, 0, 0, 0, 0, 0,
721 bcopy (ccb, request->u.atapi.ccb, sizeof ccb);
722 request->data = (caddr_t)&csio->sense_data;
723 request->bytecount = sizeof(struct atapi_sense);
724 request->transfersize = min(request->bytecount, 65534);
725 request->timeout = csio->ccb_h.timeout / 1000;
726 request->retries = 2;
727 request->flags = ATA_R_QUIET|ATA_R_ATAPI|ATA_R_IMMEDIATE;
728 hcb->flags |= AUTOSENSE;
730 ata_queue_request(request);
734 * Use auto-sense data from the ATA layer, if it has
735 * issued a REQUEST SENSE automatically and that operation
736 * returned without error.
738 if (request->u.atapi.sense.key != 0 && request->error == 0) {
739 bcopy (&request->u.atapi.sense, &csio->sense_data, sizeof(struct atapi_sense));
740 csio->ccb_h.status |= CAM_AUTOSNS_VALID;
747 csio->scsi_status = SCSI_STATUS_OK;
748 if (((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) &&
749 hcb->dxfer_alloc != NULL)
751 bcopy(hcb->dxfer_alloc, csio->data_ptr, csio->dxfer_len);
755 lockmgr(&scp->state_lock, LK_EXCLUSIVE);
756 free_hcb_and_ccb_done(hcb, rc);
757 lockmgr(&scp->state_lock, LK_RELEASE);
759 ata_free_request(request);
763 free_hcb_and_ccb_done(struct atapi_hcb *hcb, u_int32_t status)
765 struct atapi_xpt_softc *softc;
774 /* we're about to free a hcb, so the shortage has ended */
775 if (softc->flags & RESOURCE_SHORTAGE) {
776 softc->flags &= ~RESOURCE_SHORTAGE;
777 status |= CAM_RELEASE_SIMQ;
781 status | (ccb->ccb_h.status & ~(CAM_STATUS_MASK | CAM_SIM_QUEUED));
786 atapi_async(void *callback_arg, u_int32_t code,
787 struct cam_path* path, void *arg)
795 targ = xpt_path_target_id(path);
796 xpt_print_path(path);
798 kprintf("Lost host adapter\n");
800 kprintf("Lost target %d???\n", targ);
811 cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
813 if (ccb->ccb_h.status != CAM_REQ_CMP) {
814 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
815 ("Rescan failed, 0x%04x\n", ccb->ccb_h.status));
817 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
818 ("Rescan succeeded\n"));
820 xpt_free_path(ccb->ccb_h.path);
821 kfree(ccb, M_ATACAM);
825 cam_rescan(struct cam_sim *sim)
827 struct cam_path *path;
828 union ccb *ccb = kmalloc(sizeof(union ccb), M_ATACAM, M_WAITOK | M_ZERO);
831 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sim),
832 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
834 kfree(ccb, M_ATACAM);
838 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Rescanning ATAPI bus.\n"));
839 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
840 ccb->ccb_h.func_code = XPT_SCAN_BUS;
841 ccb->ccb_h.cbfcnp = cam_rescan_callback;
842 ccb->crcn.flags = CAM_FLAG_NONE;
844 /* scan is in progress now */
848 static struct atapi_hcb *
849 allocate_hcb(struct atapi_xpt_softc *softc, int unit, int bus, union ccb *ccb)
851 struct atapi_hcb *hcb = (struct atapi_hcb *)
852 kmalloc(sizeof(struct atapi_hcb), M_ATACAM, M_INTWAIT | M_ZERO);
862 free_hcb(struct atapi_hcb *hcb)
864 if ((hcb->flags & QUEUED) != 0)
865 TAILQ_REMOVE(&hcb->softc->pending_hcbs, hcb, chain);
866 if (hcb->dxfer_alloc != NULL)
867 kfree(hcb->dxfer_alloc, M_ATACAM);
868 kfree(hcb, M_ATACAM);
872 free_softc(struct atapi_xpt_softc *scp)
874 struct atapi_hcb *hcb;
877 lockmgr(&scp->state_lock, LK_EXCLUSIVE);
878 TAILQ_FOREACH(hcb, &scp->pending_hcbs, chain) {
879 free_hcb_and_ccb_done(hcb, CAM_UNREC_HBA_ERROR);
881 lockmgr(&scp->state_lock, LK_RELEASE);
883 if (scp->path != NULL) {
884 setup_async_cb(scp, 0);
885 xpt_free_path(scp->path);
887 if ((scp->flags & BUS_REGISTERED) != 0) {
888 if (xpt_bus_deregister(cam_sim_path(scp->sim)) == CAM_REQ_CMP)
889 scp->flags &= ~BUS_REGISTERED;
891 if (scp->sim != NULL) {
892 if ((scp->flags & BUS_REGISTERED) == 0)
893 cam_sim_free(scp->sim);
895 kprintf("Can't free %s SIM (still registered)\n",
896 cam_sim_name(scp->sim));
899 lockuninit(&scp->state_lock);
904 atapi_cam_event_handler(module_t mod, int what, void *arg) {
910 if (devclass_get_devices(atapi_cam_devclass, &devlist, &devcount)
913 if (devlist != NULL) {
914 while (devlist != NULL && devcount > 0) {
915 device_t child = devlist[--devcount];
916 struct atapi_xpt_softc *scp = device_get_softc(child);
918 device_delete_child(device_get_parent(child),child);
920 kfree(scp, M_ATACAM);
922 kfree(devlist, M_TEMP);