2 * Copyright (c) 2009 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 2007 David Gwynne <dlg@openbsd.org>
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies.
41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
49 * $OpenBSD: atascsi.c,v 1.64 2009/02/16 21:19:06 miod Exp $
53 * Implement each SATA port as its own SCSI bus on CAM. This way we can
54 * implement future port multiplier features as individual devices on the
57 * Much of the cdb<->xa conversion code was taken from OpenBSD, the rest
58 * was written natively for DragonFly.
63 const char *ScsiTypeArray[32] = {
98 static void ahci_xpt_action(struct cam_sim *sim, union ccb *ccb);
99 static void ahci_xpt_poll(struct cam_sim *sim);
100 static void ahci_xpt_scsi_disk_io(struct ahci_port *ap,
101 struct ata_port *at, union ccb *ccb);
102 static void ahci_xpt_scsi_atapi_io(struct ahci_port *ap,
103 struct ata_port *at, union ccb *ccb);
105 static void ahci_ata_complete_disk_rw(struct ata_xfer *xa);
106 static void ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa);
107 static void ahci_atapi_complete_cmd(struct ata_xfer *xa);
108 static void ahci_ata_dummy_sense(struct scsi_sense_data *sense_data);
109 static void ahci_ata_atapi_sense(struct ata_fis_d2h *rfis,
110 struct scsi_sense_data *sense_data);
112 static int ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *at);
113 static int ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *at);
114 static void ahci_ata_dummy_done(struct ata_xfer *xa);
115 static void ata_fix_identify(struct ata_identify *id);
116 static void ahci_cam_rescan(struct ahci_port *ap);
119 ahci_cam_attach(struct ahci_port *ap)
121 struct cam_devq *devq;
127 * We want at least one ccb to be available for error processing
128 * so don't let CAM use more then ncmds - 1.
130 unit = device_get_unit(ap->ap_sc->sc_dev);
131 if (ap->ap_sc->sc_ncmds > 1)
132 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds - 1);
134 devq = cam_simq_alloc(ap->ap_sc->sc_ncmds);
138 sim = cam_sim_alloc(ahci_xpt_action, ahci_xpt_poll, "ahci",
139 (void *)ap, unit, &sim_mplock, 1, 1, devq);
140 cam_simq_release(devq);
145 error = xpt_bus_register(ap->ap_sim, ap->ap_num);
146 if (error != CAM_SUCCESS) {
150 ap->ap_flags |= AP_F_BUS_REGISTERED;
152 error = ahci_cam_probe(ap, NULL);
157 ap->ap_flags |= AP_F_CAM_ATTACHED;
163 * The state of the port has changed.
165 * If at is NULL the physical port has changed state.
166 * If at is non-NULL a particular target behind a PM has changed state.
168 * If found is -1 the target state must be queued to a non-interrupt context.
169 * (only works with at == NULL).
171 * If found is 0 the target was removed.
172 * If found is 1 the target was inserted.
175 ahci_cam_changed(struct ahci_port *ap, struct ata_port *atx, int found)
177 struct cam_path *tmppath;
181 target = atx ? atx->at_target : CAM_TARGET_WILDCARD;
183 if (ap->ap_sim == NULL)
185 if (found == CAM_TARGET_WILDCARD) {
186 status = xpt_create_path(&tmppath, NULL,
187 cam_sim_path(ap->ap_sim),
188 target, CAM_LUN_WILDCARD);
189 if (status != CAM_REQ_CMP)
193 status = xpt_create_path(&tmppath, NULL,
194 cam_sim_path(ap->ap_sim),
197 if (status != CAM_REQ_CMP)
204 xpt_async(AC_FOUND_DEVICE, tmppath, NULL);
206 xpt_async(AC_LOST_DEVICE, tmppath, NULL);
209 xpt_free_path(tmppath);
213 ahci_cam_detach(struct ahci_port *ap)
217 if ((ap->ap_flags & AP_F_CAM_ATTACHED) == 0)
221 xpt_freeze_simq(ap->ap_sim, 1);
223 if (ap->ap_flags & AP_F_BUS_REGISTERED) {
224 error = xpt_bus_deregister(cam_sim_path(ap->ap_sim));
225 KKASSERT(error == CAM_REQ_CMP);
226 ap->ap_flags &= ~AP_F_BUS_REGISTERED;
229 cam_sim_free(ap->ap_sim);
233 ap->ap_flags &= ~AP_F_CAM_ATTACHED;
237 * Once the AHCI port has been attached we need to probe for a device or
238 * devices on the port and setup various options.
240 * If at is NULL we are probing the direct-attached device on the port,
241 * which may or may not be a port multiplier.
244 ahci_cam_probe(struct ahci_port *ap, struct ata_port *atx)
249 u_int64_t capacity_bytes;
263 * A NULL atx indicates a probe of the directly connected device.
264 * A non-NULL atx indicates a device connected via a port multiplier.
265 * We need to preserve atx for calls to ahci_ata_get_xfer().
267 * at is always non-NULL. For directly connected devices we supply
268 * an (at) pointing to target 0.
271 at = ap->ap_ata; /* direct attached - device 0 */
272 if (ap->ap_type == ATA_PORT_T_PM) {
273 kprintf("%s: Found Port Multiplier\n",
275 ap->ap_probe = ATA_PROBE_GOOD;
278 at->at_type = ap->ap_type;
281 if (atx->at_type == ATA_PORT_T_PM) {
282 kprintf("%s: Bogus device, reducing port count to %d\n",
283 ATANAME(ap, atx), atx->at_target);
284 if (ap->ap_pmcount > atx->at_target)
285 ap->ap_pmcount = atx->at_target;
289 if (ap->ap_type == ATA_PORT_T_NONE)
291 if (at->at_type == ATA_PORT_T_NONE)
295 * Issue identify, saving the result
297 xa = ahci_ata_get_xfer(ap, atx);
298 xa->complete = ahci_ata_dummy_done;
299 xa->data = &at->at_identify;
300 xa->datalen = sizeof(at->at_identify);
301 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
303 switch(at->at_type) {
304 case ATA_PORT_T_DISK:
305 xa->fis->command = ATA_C_IDENTIFY;
308 case ATA_PORT_T_ATAPI:
309 xa->fis->command = ATA_C_ATAPI_IDENTIFY;
313 xa->fis->command = ATA_C_ATAPI_IDENTIFY;
314 type = "UNKNOWN(ATAPI?)";
317 xa->fis->features = 0;
319 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
322 status = ahci_ata_cmd(xa);
323 if (status != ATA_COMPLETE) {
324 kprintf("%s: Detected %s device but unable to IDENTIFY\n",
325 ATANAME(ap, atx), type);
326 ahci_ata_put_xfer(xa);
329 if (xa->state != ATA_S_COMPLETE) {
330 kprintf("%s: Detected %s device but unable to IDENTIFY "
332 ATANAME(ap, atx), type, xa->state);
333 ahci_ata_put_xfer(xa);
336 ahci_ata_put_xfer(xa);
338 ata_fix_identify(&at->at_identify);
341 * Read capacity using SATA probe info.
343 if (le16toh(at->at_identify.cmdset83) & 0x0400) {
344 /* LBA48 feature set supported */
346 for (i = 3; i >= 0; --i) {
349 le16toh(at->at_identify.addrsecxt[i]);
352 capacity = le16toh(at->at_identify.addrsec[1]);
354 capacity += le16toh(at->at_identify.addrsec[0]);
356 at->at_capacity = capacity;
358 ap->ap_probe = ATA_PROBE_GOOD;
360 capacity_bytes = capacity * 512;
363 * Negotiate NCQ, throw away any ata_xfer's beyond the negotiated
364 * number of slots and limit the number of CAM ccb's to one less
365 * so we always have a slot available for recovery.
367 * NCQ is not used if ap_ncqdepth is 1 or the host controller does
368 * not support it, and in that case the driver can handle extra
371 * NCQ is currently used only with direct-attached disks. It is
372 * not used with port multipliers or direct-attached ATAPI devices.
374 * Remember at least one extra CCB needs to be reserved for the
377 if ((ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) &&
378 ap->ap_type == ATA_PORT_T_DISK &&
379 (le16toh(at->at_identify.satacap) & (1 << 8))) {
380 at->at_ncqdepth = (le16toh(at->at_identify.qdepth) & 0x1F) + 1;
381 devncqdepth = at->at_ncqdepth;
382 if (at->at_ncqdepth > ap->ap_sc->sc_ncmds)
383 at->at_ncqdepth = ap->ap_sc->sc_ncmds;
384 if (at->at_ncqdepth > 1) {
385 for (i = 0; i < ap->ap_sc->sc_ncmds; ++i) {
386 xa = ahci_ata_get_xfer(ap, atx);
387 if (xa->tag < at->at_ncqdepth) {
388 xa->state = ATA_S_COMPLETE;
389 ahci_ata_put_xfer(xa);
392 if (at->at_ncqdepth >= ap->ap_sc->sc_ncmds) {
393 cam_devq_resize(ap->ap_sim->devq,
394 at->at_ncqdepth - 1);
402 * Make the model string a bit more presentable
404 for (model_len = 40; model_len; --model_len) {
405 if (at->at_identify.model[model_len-1] == ' ')
407 if (at->at_identify.model[model_len-1] == 0)
413 * Generate informatiive strings.
415 * NOTE: We do not automatically set write caching, lookahead,
416 * or the security state for ATAPI devices.
418 if (at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) {
419 if (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE)
421 else if (at->at_type == ATA_PORT_T_ATAPI)
429 if (at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) {
430 if (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD)
432 else if (at->at_type == ATA_PORT_T_ATAPI)
440 if (at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) {
441 if (at->at_identify.securestatus & ATA_SECURE_FROZEN)
443 else if (at->at_type == ATA_PORT_T_ATAPI)
451 kprintf("%s: Found %s \"%*.*s %8.8s\" serial=\"%20.20s\"\n"
452 "%s: tags=%d/%d satacaps=%04x satafeat=%04x "
453 "capacity=%lld.%02dMB\n"
454 "%s: f85=%04x f86=%04x f87=%04x WC=%s RA=%s SEC=%s\n",
457 model_len, model_len,
458 at->at_identify.model,
459 at->at_identify.firmware,
460 at->at_identify.serial,
463 devncqdepth, ap->ap_sc->sc_ncmds,
464 at->at_identify.satacap,
465 at->at_identify.satafsup,
466 (long long)capacity_bytes / (1024 * 1024),
467 (int)(capacity_bytes % (1024 * 1024)) * 100 / (1024 * 1024),
470 at->at_identify.features85,
471 at->at_identify.features86,
472 at->at_identify.features87,
479 * Additional type-specific probing
481 switch(at->at_type) {
482 case ATA_PORT_T_DISK:
483 error = ahci_cam_probe_disk(ap, atx);
485 case ATA_PORT_T_ATAPI:
486 error = ahci_cam_probe_atapi(ap, atx);
494 at->at_probe = ATA_PROBE_FAILED;
496 ap->ap_probe = at->at_probe;
498 at->at_probe = ATA_PROBE_GOOD;
500 ap->ap_probe = at->at_probe;
506 * DISK-specific probe after initial ident
509 ahci_cam_probe_disk(struct ahci_port *ap, struct ata_port *atx)
515 at = atx ? atx : ap->ap_ata;
518 * Enable write cache if supported
520 * NOTE: "WD My Book" external disk devices have a very poor
521 * daughter board between the the ESATA and the HD. Sending
522 * any ATA_C_SET_FEATURES commands will break the hardware port
523 * with a fatal protocol error. However, this device also
524 * indicates that WRITECACHE is already on and READAHEAD is
525 * not supported so we avoid the issue.
527 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_WRITECACHE) &&
528 (at->at_identify.features85 & ATA_IDENTIFY_WRITECACHE) == 0) {
529 xa = ahci_ata_get_xfer(ap, atx);
530 xa->complete = ahci_ata_dummy_done;
531 xa->fis->command = ATA_C_SET_FEATURES;
532 /*xa->fis->features = ATA_SF_WRITECACHE_EN;*/
533 xa->fis->features = ATA_SF_LOOKAHEAD_EN;
534 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
536 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
539 status = ahci_ata_cmd(xa);
540 if (status == ATA_COMPLETE)
541 at->at_features |= ATA_PORT_F_WCACHE;
542 ahci_ata_put_xfer(xa);
546 * Enable readahead if supported
548 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_LOOKAHEAD) &&
549 (at->at_identify.features85 & ATA_IDENTIFY_LOOKAHEAD) == 0) {
550 xa = ahci_ata_get_xfer(ap, atx);
551 xa->complete = ahci_ata_dummy_done;
552 xa->fis->command = ATA_C_SET_FEATURES;
553 xa->fis->features = ATA_SF_LOOKAHEAD_EN;
554 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
556 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
559 status = ahci_ata_cmd(xa);
560 if (status == ATA_COMPLETE)
561 at->at_features |= ATA_PORT_F_RAHEAD;
562 ahci_ata_put_xfer(xa);
566 * FREEZE LOCK the device so malicious users can't lock it on us.
567 * As there is no harm in issuing this to devices that don't
568 * support the security feature set we just send it, and don't bother
569 * checking if the device sends a command abort to tell us it doesn't
572 if ((at->at_identify.cmdset82 & ATA_IDENTIFY_SECURITY) &&
573 (at->at_identify.securestatus & ATA_SECURE_FROZEN) == 0) {
574 xa = ahci_ata_get_xfer(ap, atx);
575 xa->complete = ahci_ata_dummy_done;
576 xa->fis->command = ATA_C_SEC_FREEZE_LOCK;
577 xa->fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
578 xa->flags = ATA_F_READ | ATA_F_PIO | ATA_F_POLL;
581 status = ahci_ata_cmd(xa);
582 if (status == ATA_COMPLETE)
583 at->at_features |= ATA_PORT_F_FRZLCK;
584 ahci_ata_put_xfer(xa);
591 * ATAPI-specific probe after initial ident
594 ahci_cam_probe_atapi(struct ahci_port *ap, struct ata_port *atx)
600 * Fix byte ordering so buffers can be accessed as
604 ata_fix_identify(struct ata_identify *id)
609 swap = (u_int16_t *)id->serial;
610 for (i = 0; i < sizeof(id->serial) / sizeof(u_int16_t); i++)
611 swap[i] = bswap16(swap[i]);
613 swap = (u_int16_t *)id->firmware;
614 for (i = 0; i < sizeof(id->firmware) / sizeof(u_int16_t); i++)
615 swap[i] = bswap16(swap[i]);
617 swap = (u_int16_t *)id->model;
618 for (i = 0; i < sizeof(id->model) / sizeof(u_int16_t); i++)
619 swap[i] = bswap16(swap[i]);
623 * Dummy done callback for xa.
626 ahci_ata_dummy_done(struct ata_xfer *xa)
631 * Use an engineering request to initiate a target scan for devices
632 * behind a port multiplier.
634 * An asynchronous bus scan is used to avoid reentrancy issues.
637 ahci_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
639 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
641 ap->ap_flags &= ~AP_F_SCAN_RUNNING;
642 if (ap->ap_flags & AP_F_SCAN_REQUESTED) {
643 ap->ap_flags &= ~AP_F_SCAN_REQUESTED;
650 ahci_cam_rescan(struct ahci_port *ap)
652 struct cam_path *path;
657 if (ap->ap_flags & AP_F_SCAN_RUNNING) {
658 ap->ap_flags |= AP_F_SCAN_REQUESTED;
661 ap->ap_flags |= AP_F_SCAN_RUNNING;
662 for (i = 0; i < AHCI_MAX_PMPORTS; ++i) {
663 ap->ap_ata[i].at_features |= ATA_PORT_F_RESCAN;
666 ccb = kmalloc(sizeof(*ccb), M_TEMP, M_WAITOK | M_ZERO);
667 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim),
668 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
669 if (status != CAM_REQ_CMP)
672 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */
673 ccb->ccb_h.func_code = XPT_ENG_EXEC | XPT_FC_QUEUED;
674 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback;
675 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
676 ccb->crcn.flags = CAM_FLAG_NONE;
679 /* scan is now underway */
683 ahci_xpt_rescan(struct ahci_port *ap)
685 struct cam_path *path;
689 status = xpt_create_path(&path, xpt_periph, cam_sim_path(ap->ap_sim),
690 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
691 if (status != CAM_REQ_CMP)
693 ccb = kmalloc(sizeof(*ccb), M_TEMP, M_WAITOK | M_ZERO);
694 xpt_setup_ccb(&ccb->ccb_h, path, 5); /* 5 = low priority */
695 ccb->ccb_h.func_code = XPT_SCAN_BUS | XPT_FC_QUEUED;
696 ccb->ccb_h.cbfcnp = ahci_cam_rescan_callback;
697 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
698 ccb->crcn.flags = CAM_FLAG_NONE;
703 ccb = xpt_alloc_ccb();
704 status = xpt_create_path(&ccb->ccb_h.path, xpt_periph,
705 cam_sim_path(ap->ap_sim),
706 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
707 if (status == CAM_REQ_CMP) {
708 kprintf("RESCAN SCSI BUS %d\n", ccb->ccb_h.timeout);
709 ccb->crcn.flags = CAM_FLAG_NONE;
717 * Action function - dispatch command
721 ahci_xpt_action(struct cam_sim *sim, union ccb *ccb)
723 struct ahci_port *ap;
724 struct ata_port *at, *atx;
725 struct ccb_hdr *ccbh;
729 ap = cam_sim_softc(sim);
732 KKASSERT(ap != NULL);
734 unit = cam_sim_unit(sim);
737 * Early failure checks. These checks do not apply to XPT_PATH_INQ,
738 * otherwise the bus rescan will not remove the dead devices when
741 * For non-wildcards we have one target (0) and one lun (0),
742 * unless we have a port multiplier.
744 * A wildcard target indicates only the general bus is being
747 * Calculate at and atx. at is always non-NULL. atx is only
748 * non-NULL for direct-attached devices. It will be NULL for
749 * devices behind a port multiplier.
751 * XXX What do we do with a LUN wildcard?
753 if (ccbh->target_id != CAM_TARGET_WILDCARD &&
754 ccbh->func_code != XPT_PATH_INQ) {
755 if (ap->ap_type == ATA_PORT_T_NONE) {
756 ccbh->status = CAM_DEV_NOT_THERE;
760 if (ccbh->target_id < 0 || ccbh->target_id >= ap->ap_pmcount) {
761 ccbh->status = CAM_DEV_NOT_THERE;
765 at += ccbh->target_id;
766 if (ap->ap_type == ATA_PORT_T_PM)
769 if (ccbh->target_lun != CAM_LUN_WILDCARD && ccbh->target_lun) {
770 ccbh->status = CAM_DEV_NOT_THERE;
777 * Switch on the meta XPT command
779 switch(ccbh->func_code) {
782 * This routine is called after a port multiplier has been
785 ccbh->status = CAM_REQ_CMP;
786 ahci_port_state_machine(ap);
790 * Rescanning the scsi bus should clean up the peripheral
797 * This command always succeeds, otherwise the bus scan
798 * will not detach dead devices.
800 ccb->cpi.version_num = 1;
801 ccb->cpi.hba_inquiry = 0;
802 ccb->cpi.target_sprt = 0;
803 ccb->cpi.hba_misc = PIM_SEQSCAN;
804 ccb->cpi.hba_eng_cnt = 0;
805 bzero(ccb->cpi.vuhba_flags, sizeof(ccb->cpi.vuhba_flags));
806 ccb->cpi.max_target = AHCI_MAX_PMPORTS;
807 ccb->cpi.max_lun = 0;
808 ccb->cpi.async_flags = 0;
809 ccb->cpi.hpath_id = 0;
810 ccb->cpi.initiator_id = AHCI_MAX_PMPORTS - 1;
811 ccb->cpi.unit_number = cam_sim_unit(sim);
812 ccb->cpi.bus_id = cam_sim_bus(sim);
813 ccb->cpi.base_transfer_speed = 150000;
814 ccb->cpi.transport = XPORT_AHCI;
815 ccb->cpi.transport_version = 1;
816 ccb->cpi.protocol = PROTO_SCSI;
817 ccb->cpi.protocol_version = SCSI_REV_2;
819 ccbh->status = CAM_REQ_CMP;
820 if (ccbh->target_id != CAM_TARGET_WILDCARD) {
821 switch(ahci_pread(ap, AHCI_PREG_SSTS) &
822 AHCI_PREG_SSTS_SPD) {
823 case AHCI_PREG_SSTS_SPD_GEN1:
824 ccb->cpi.base_transfer_speed = 150000;
826 case AHCI_PREG_SSTS_SPD_GEN2:
827 ccb->cpi.base_transfer_speed = 300000;
831 ccb->cpi.base_transfer_speed = 1000;
835 if (ap->ap_type == ATA_PORT_T_NONE)
836 ccbh->status = CAM_DEV_NOT_THERE;
842 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
843 if (ap->ap_type == ATA_PORT_T_NONE) {
844 ccbh->status = CAM_DEV_NOT_THERE;
846 ahci_port_reset(ap, atx, 0);
847 ccbh->status = CAM_REQ_CMP;
849 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
853 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
854 ahci_port_reset(ap, NULL, 1);
855 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
856 ccbh->status = CAM_REQ_CMP;
859 case XPT_SET_TRAN_SETTINGS:
860 ccbh->status = CAM_FUNC_NOTAVAIL;
863 case XPT_GET_TRAN_SETTINGS:
864 ccb->cts.protocol = PROTO_SCSI;
865 ccb->cts.protocol_version = SCSI_REV_2;
866 ccb->cts.transport = XPORT_AHCI;
867 ccb->cts.transport_version = XPORT_VERSION_UNSPECIFIED;
868 ccb->cts.proto_specific.valid = 0;
869 ccb->cts.xport_specific.valid = 0;
870 ccbh->status = CAM_REQ_CMP;
873 case XPT_CALC_GEOMETRY:
874 cam_calc_geometry(&ccb->ccg, 1);
878 switch(at->at_type) {
879 case ATA_PORT_T_DISK:
880 ahci_xpt_scsi_disk_io(ap, atx, ccb);
882 case ATA_PORT_T_ATAPI:
883 ahci_xpt_scsi_atapi_io(ap, atx, ccb);
886 ccbh->status = CAM_REQ_INVALID;
892 ccbh->status = CAM_REQ_INVALID;
901 * Generally this function gets called heavily when interrupts might be
902 * non-operational, during a halt/reboot or panic.
906 ahci_xpt_poll(struct cam_sim *sim)
908 struct ahci_port *ap;
910 ap = cam_sim_softc(sim);
912 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
914 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
919 * Convert the SCSI command in ccb to an ata_xfer command in xa
920 * for ATA_PORT_T_DISK operations. Set the completion function
921 * to convert the response back, then dispatch to the OpenBSD AHCI
924 * AHCI DISK commands only support a limited command set, and we
925 * fake additional commands to make it play nice with the CAM subsystem.
929 ahci_xpt_scsi_disk_io(struct ahci_port *ap, struct ata_port *atx,
932 struct ccb_hdr *ccbh;
933 struct ccb_scsiio *csio;
936 struct ata_fis_h2d *fis;
938 union scsi_data *rdata;
944 ccbh = &ccb->csio.ccb_h;
946 at = atx ? atx : &ap->ap_ata[0];
949 * XXX not passing NULL at for direct attach!
951 xa = ahci_ata_get_xfer(ap, atx);
952 rdata = (void *)csio->data_ptr;
953 rdata_len = csio->dxfer_len;
956 * Build the FIS or process the csio to completion.
958 cdb = (void *)((ccbh->flags & CAM_CDB_POINTER) ?
959 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes);
961 switch(cdb->generic.opcode) {
964 * Auto-sense everything, so explicit sense requests
967 ccbh->status = CAM_SCSI_STATUS_ERROR;
971 * Inquiry supported features
973 * [opcode, byte2, page_code, length, control]
975 if (cdb->inquiry.byte2 & SI_EVPD) {
976 switch(cdb->inquiry.page_code) {
977 case SVPD_SUPPORTED_PAGE_LIST:
978 /* XXX atascsi_disk_vpd_supported */
979 case SVPD_UNIT_SERIAL_NUMBER:
980 /* XXX atascsi_disk_vpd_serial */
981 case SVPD_UNIT_DEVID:
982 /* XXX atascsi_disk_vpd_ident */
984 ccbh->status = CAM_FUNC_NOTAVAIL;
988 bzero(rdata, rdata_len);
989 if (rdata_len < SHORT_INQUIRY_LENGTH) {
990 ccbh->status = CAM_CCB_LEN_ERR;
993 if (rdata_len > sizeof(rdata->inquiry_data))
994 rdata_len = sizeof(rdata->inquiry_data);
995 rdata->inquiry_data.device = T_DIRECT;
996 rdata->inquiry_data.version = SCSI_REV_SPC2;
997 rdata->inquiry_data.response_format = 2;
998 rdata->inquiry_data.additional_length = 32;
999 bcopy("SATA ", rdata->inquiry_data.vendor, 8);
1000 bcopy(at->at_identify.model,
1001 rdata->inquiry_data.product,
1002 sizeof(rdata->inquiry_data.product));
1003 bcopy(at->at_identify.firmware,
1004 rdata->inquiry_data.revision,
1005 sizeof(rdata->inquiry_data.revision));
1006 ccbh->status = CAM_REQ_CMP;
1009 case READ_CAPACITY_16:
1010 if (cdb->read_capacity_16.service_action != SRC16_SERVICE_ACTION) {
1011 ccbh->status = CAM_REQ_INVALID;
1014 if (rdata_len < sizeof(rdata->read_capacity_data_16)) {
1015 ccbh->status = CAM_CCB_LEN_ERR;
1020 if (rdata_len < sizeof(rdata->read_capacity_data)) {
1021 ccbh->status = CAM_CCB_LEN_ERR;
1025 capacity = at->at_capacity;
1027 bzero(rdata, rdata_len);
1028 if (cdb->generic.opcode == READ_CAPACITY) {
1029 rdata_len = sizeof(rdata->read_capacity_data);
1030 if (capacity > 0xFFFFFFFFU)
1031 capacity = 0xFFFFFFFFU;
1032 bzero(&rdata->read_capacity_data, rdata_len);
1033 scsi_ulto4b((u_int32_t)capacity - 1,
1034 rdata->read_capacity_data.addr);
1035 scsi_ulto4b(512, rdata->read_capacity_data.length);
1037 rdata_len = sizeof(rdata->read_capacity_data_16);
1038 bzero(&rdata->read_capacity_data_16, rdata_len);
1039 scsi_u64to8b(capacity - 1,
1040 rdata->read_capacity_data_16.addr);
1041 scsi_ulto4b(512, rdata->read_capacity_data_16.length);
1043 ccbh->status = CAM_REQ_CMP;
1045 case SYNCHRONIZE_CACHE:
1047 * Synchronize cache. Specification says this can take
1048 * greater then 30 seconds so give it at least 45.
1051 fis->flags = ATA_H2D_FLAGS_CMD;
1052 fis->command = ATA_C_FLUSH_CACHE;
1054 if (xa->timeout < 45000)
1055 xa->timeout = 45000;
1057 xa->flags = ATA_F_READ;
1058 xa->complete = ahci_ata_complete_disk_synchronize_cache;
1060 case TEST_UNIT_READY:
1061 case START_STOP_UNIT:
1064 * Just silently return success
1066 ccbh->status = CAM_REQ_CMP;
1072 * XXX implement pass-through
1074 ccbh->status = CAM_FUNC_NOTAVAIL;
1077 switch(cdb->generic.opcode) {
1079 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF;
1080 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100;
1081 xa->flags = ATA_F_READ;
1084 lba = scsi_4btoul(cdb->rw_10.addr);
1085 count = scsi_2btoul(cdb->rw_10.length);
1086 xa->flags = ATA_F_READ;
1089 lba = scsi_4btoul(cdb->rw_12.addr);
1090 count = scsi_4btoul(cdb->rw_12.length);
1091 xa->flags = ATA_F_READ;
1094 lba = scsi_8btou64(cdb->rw_16.addr);
1095 count = scsi_4btoul(cdb->rw_16.length);
1096 xa->flags = ATA_F_READ;
1099 lba = scsi_3btoul(cdb->rw_6.addr) & 0x1FFFFF;
1100 count = cdb->rw_6.length ? cdb->rw_6.length : 0x100;
1101 xa->flags = ATA_F_WRITE;
1104 lba = scsi_4btoul(cdb->rw_10.addr);
1105 count = scsi_2btoul(cdb->rw_10.length);
1106 xa->flags = ATA_F_WRITE;
1109 lba = scsi_4btoul(cdb->rw_12.addr);
1110 count = scsi_4btoul(cdb->rw_12.length);
1111 xa->flags = ATA_F_WRITE;
1114 lba = scsi_8btou64(cdb->rw_16.addr);
1115 count = scsi_4btoul(cdb->rw_16.length);
1116 xa->flags = ATA_F_WRITE;
1119 ccbh->status = CAM_REQ_INVALID;
1122 if (ccbh->status != CAM_REQ_INPROG)
1126 fis->flags = ATA_H2D_FLAGS_CMD;
1127 fis->lba_low = (u_int8_t)lba;
1128 fis->lba_mid = (u_int8_t)(lba >> 8);
1129 fis->lba_high = (u_int8_t)(lba >> 16);
1130 fis->device = ATA_H2D_DEVICE_LBA;
1133 * NCQ only for direct-attached disks, do not currently
1134 * try to use NCQ with port multipliers.
1136 if (at->at_ncqdepth > 1 &&
1137 ap->ap_type == ATA_PORT_T_DISK &&
1138 (ap->ap_sc->sc_cap & AHCI_REG_CAP_SNCQ) &&
1139 (ccbh->flags & CAM_POLLED) == 0) {
1141 * Use NCQ - always uses 48 bit addressing
1143 xa->flags |= ATA_F_NCQ;
1144 fis->command = (xa->flags & ATA_F_WRITE) ?
1145 ATA_C_WRITE_FPDMA : ATA_C_READ_FPDMA;
1146 fis->lba_low_exp = (u_int8_t)(lba >> 24);
1147 fis->lba_mid_exp = (u_int8_t)(lba >> 32);
1148 fis->lba_high_exp = (u_int8_t)(lba >> 40);
1149 fis->sector_count = xa->tag << 3;
1150 fis->features = (u_int8_t)count;
1151 fis->features_exp = (u_int8_t)(count >> 8);
1152 } else if (count > 0x100 || lba > 0xFFFFFFFFU) {
1156 fis->command = (xa->flags & ATA_F_WRITE) ?
1157 ATA_C_WRITEDMA_EXT : ATA_C_READDMA_EXT;
1158 fis->lba_low_exp = (u_int8_t)(lba >> 24);
1159 fis->lba_mid_exp = (u_int8_t)(lba >> 32);
1160 fis->lba_high_exp = (u_int8_t)(lba >> 40);
1161 fis->sector_count = (u_int8_t)count;
1162 fis->sector_count_exp = (u_int8_t)(count >> 8);
1167 * NOTE: 256 sectors is supported, stored as 0.
1169 fis->command = (xa->flags & ATA_F_WRITE) ?
1170 ATA_C_WRITEDMA : ATA_C_READDMA;
1171 fis->device |= (u_int8_t)(lba >> 24) & 0x0F;
1172 fis->sector_count = (u_int8_t)count;
1175 xa->data = csio->data_ptr;
1176 xa->datalen = csio->dxfer_len;
1177 xa->complete = ahci_ata_complete_disk_rw;
1178 xa->timeout = ccbh->timeout; /* milliseconds */
1179 if (ccbh->flags & CAM_POLLED)
1180 xa->flags |= ATA_F_POLL;
1185 * If the request is still in progress the xa and FIS have
1186 * been set up and must be dispatched. Otherwise the request
1189 if (ccbh->status == CAM_REQ_INPROG) {
1190 KKASSERT(xa->complete != NULL);
1191 xa->atascsi_private = ccb;
1192 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
1193 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
1194 fis->flags |= at->at_target;
1196 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
1198 ahci_ata_put_xfer(xa);
1204 * Convert the SCSI command in ccb to an ata_xfer command in xa
1205 * for ATA_PORT_T_ATAPI operations. Set the completion function
1206 * to convert the response back, then dispatch to the OpenBSD AHCI
1211 ahci_xpt_scsi_atapi_io(struct ahci_port *ap, struct ata_port *atx,
1214 struct ccb_hdr *ccbh;
1215 struct ccb_scsiio *csio;
1216 struct ata_xfer *xa;
1217 struct ata_fis_h2d *fis;
1221 struct ata_port *at;
1223 ccbh = &ccb->csio.ccb_h;
1225 at = atx ? atx : &ap->ap_ata[0];
1227 switch (ccbh->flags & CAM_DIR_MASK) {
1229 flags = ATA_F_PACKET | ATA_F_READ;
1232 flags = ATA_F_PACKET | ATA_F_WRITE;
1235 flags = ATA_F_PACKET;
1238 ccbh->status = CAM_REQ_INVALID;
1245 * The command has to fit in the packet command buffer.
1247 if (csio->cdb_len < 6 || csio->cdb_len > 16) {
1248 ccbh->status = CAM_CCB_LEN_ERR;
1254 * Initialize the XA and FIS.
1256 * XXX not passing NULL at for direct attach!
1258 xa = ahci_ata_get_xfer(ap, atx);
1261 fis->flags = ATA_H2D_FLAGS_CMD | at->at_target;
1262 fis->command = ATA_C_PACKET;
1264 fis->sector_count = xa->tag << 3;
1265 fis->features = ATA_H2D_FEATURES_DMA |
1266 ((flags & ATA_F_WRITE) ?
1267 ATA_H2D_FEATURES_DIR_WRITE : ATA_H2D_FEATURES_DIR_READ);
1268 fis->lba_mid = 0x00;
1269 fis->lba_high = 0x20;
1272 xa->data = csio->data_ptr;
1273 xa->datalen = csio->dxfer_len;
1274 xa->timeout = ccbh->timeout; /* milliseconds */
1276 if (ccbh->flags & CAM_POLLED)
1277 xa->flags |= ATA_F_POLL;
1280 * Copy the cdb to the packetcmd buffer in the FIS using a
1281 * convenient pointer in the xa.
1283 cdbs = (void *)((ccbh->flags & CAM_CDB_POINTER) ?
1284 csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes);
1285 bcopy(cdbs, xa->packetcmd, csio->cdb_len);
1288 kprintf("opcode %d cdb_len %d dxfer_len %d\n",
1289 cdbs->generic.opcode,
1290 csio->cdb_len, csio->dxfer_len);
1294 * Some ATAPI commands do not actually follow the SCSI standard.
1296 cdbd = (void *)xa->packetcmd;
1298 switch(cdbd->generic.opcode) {
1301 * Some ATAPI devices can't handle SI_EVPD being set
1302 * for a basic inquiry (page_code == 0).
1304 * Some ATAPI devices can't handle long inquiry lengths,
1305 * don't ask me why. Truncate the inquiry length.
1307 if ((cdbd->inquiry.byte2 & SI_EVPD) &&
1308 cdbd->inquiry.page_code == 0) {
1309 cdbd->inquiry.byte2 &= ~SI_EVPD;
1311 if (cdbd->inquiry.page_code == 0 &&
1312 cdbd->inquiry.length > SHORT_INQUIRY_LENGTH) {
1313 cdbd->inquiry.length = SHORT_INQUIRY_LENGTH;
1319 * Convert *_6 to *_10 commands. Most ATAPI devices
1320 * cannot handle the SCSI READ_6 and WRITE_6 commands.
1322 cdbd->rw_10.opcode |= 0x20;
1323 cdbd->rw_10.byte2 = 0;
1324 cdbd->rw_10.addr[0] = cdbs->rw_6.addr[0] & 0x1F;
1325 cdbd->rw_10.addr[1] = cdbs->rw_6.addr[1];
1326 cdbd->rw_10.addr[2] = cdbs->rw_6.addr[2];
1327 cdbd->rw_10.addr[3] = 0;
1328 cdbd->rw_10.reserved = 0;
1329 cdbd->rw_10.length[0] = 0;
1330 cdbd->rw_10.length[1] = cdbs->rw_6.length;
1331 cdbd->rw_10.control = cdbs->rw_6.control;
1340 xa->complete = ahci_atapi_complete_cmd;
1341 xa->atascsi_private = ccb;
1342 ccb->ccb_h.sim_priv.entries[0].ptr = ap;
1347 * Completion function for ATA_PORT_T_DISK cache synchronization.
1351 ahci_ata_complete_disk_synchronize_cache(struct ata_xfer *xa)
1353 union ccb *ccb = xa->atascsi_private;
1354 struct ccb_hdr *ccbh = &ccb->ccb_h;
1355 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1358 case ATA_S_COMPLETE:
1359 ccbh->status = CAM_REQ_CMP;
1360 ccb->csio.scsi_status = SCSI_STATUS_OK;
1363 kprintf("%s: synchronize_cache: error\n",
1364 ATANAME(ap, xa->at));
1365 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
1366 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1367 ahci_ata_dummy_sense(&ccb->csio.sense_data);
1370 kprintf("%s: synchronize_cache: timeout\n",
1371 ATANAME(ap, xa->at));
1372 ccbh->status = CAM_CMD_TIMEOUT;
1375 kprintf("%s: synchronize_cache: unknown state %d\n",
1376 ATANAME(ap, xa->at), xa->state);
1377 ccbh->status = CAM_REQ_CMP_ERR;
1380 ahci_ata_put_xfer(xa);
1381 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
1383 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
1387 * Completion function for ATA_PORT_T_DISK I/O
1391 ahci_ata_complete_disk_rw(struct ata_xfer *xa)
1393 union ccb *ccb = xa->atascsi_private;
1394 struct ccb_hdr *ccbh = &ccb->ccb_h;
1395 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1398 case ATA_S_COMPLETE:
1399 ccbh->status = CAM_REQ_CMP;
1400 ccb->csio.scsi_status = SCSI_STATUS_OK;
1403 kprintf("%s: disk_rw: error\n", ATANAME(ap, xa->at));
1404 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
1405 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1406 ahci_ata_dummy_sense(&ccb->csio.sense_data);
1409 kprintf("%s: disk_rw: timeout\n", ATANAME(ap, xa->at));
1410 ccbh->status = CAM_CMD_TIMEOUT;
1413 kprintf("%s: disk_rw: unknown state %d\n",
1414 ATANAME(ap, xa->at), xa->state);
1415 ccbh->status = CAM_REQ_CMP_ERR;
1418 ccb->csio.resid = xa->resid;
1419 ahci_ata_put_xfer(xa);
1420 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
1422 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
1426 * Completion function for ATA_PORT_T_ATAPI I/O
1428 * Sense data is returned in the rfis.
1432 ahci_atapi_complete_cmd(struct ata_xfer *xa)
1434 union ccb *ccb = xa->atascsi_private;
1435 struct ccb_hdr *ccbh = &ccb->ccb_h;
1436 struct ahci_port *ap = ccb->ccb_h.sim_priv.entries[0].ptr;
1439 cdb = (void *)((ccb->ccb_h.flags & CAM_CDB_POINTER) ?
1440 ccb->csio.cdb_io.cdb_ptr : ccb->csio.cdb_io.cdb_bytes);
1443 case ATA_S_COMPLETE:
1444 ccbh->status = CAM_REQ_CMP;
1445 ccb->csio.scsi_status = SCSI_STATUS_OK;
1448 kprintf("%s: cmd %d: error\n",
1449 PORTNAME(ap), cdb->generic.opcode);
1450 ccbh->status = CAM_SCSI_STATUS_ERROR;
1451 ccb->csio.scsi_status = SCSI_STATUS_CHECK_COND;
1452 ahci_ata_atapi_sense(&xa->rfis, &ccb->csio.sense_data);
1455 kprintf("%s: cmd %d: timeout\n",
1456 PORTNAME(ap), cdb->generic.opcode);
1457 ccbh->status = CAM_CMD_TIMEOUT;
1460 kprintf("%s: cmd %d: unknown state %d\n",
1461 PORTNAME(ap), cdb->generic.opcode, xa->state);
1462 ccbh->status = CAM_REQ_CMP_ERR;
1465 ccb->csio.resid = xa->resid;
1466 ahci_ata_put_xfer(xa);
1467 lwkt_serialize_exit(&ap->ap_sc->sc_serializer);
1469 lwkt_serialize_enter(&ap->ap_sc->sc_serializer);
1473 * Construct dummy sense data for errors on DISKs
1477 ahci_ata_dummy_sense(struct scsi_sense_data *sense_data)
1479 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR;
1480 sense_data->segment = 0;
1481 sense_data->flags = SSD_KEY_MEDIUM_ERROR;
1482 sense_data->info[0] = 0;
1483 sense_data->info[1] = 0;
1484 sense_data->info[2] = 0;
1485 sense_data->info[3] = 0;
1486 sense_data->extra_len = 0;
1490 * Construct atapi sense data for errors on ATAPI
1492 * The ATAPI sense data is stored in the passed rfis and must be converted
1493 * to SCSI sense data.
1497 ahci_ata_atapi_sense(struct ata_fis_d2h *rfis,
1498 struct scsi_sense_data *sense_data)
1500 sense_data->error_code = SSD_ERRCODE_VALID | SSD_CURRENT_ERROR;
1501 sense_data->segment = 0;
1502 sense_data->flags = (rfis->error & 0xF0) >> 4;
1503 if (rfis->error & 0x04)
1504 sense_data->flags |= SSD_KEY_ILLEGAL_REQUEST;
1505 if (rfis->error & 0x02)
1506 sense_data->flags |= SSD_EOM;
1507 if (rfis->error & 0x01)
1508 sense_data->flags |= SSD_ILI;
1509 sense_data->info[0] = 0;
1510 sense_data->info[1] = 0;
1511 sense_data->info[2] = 0;
1512 sense_data->info[3] = 0;
1513 sense_data->extra_len = 0;