2 * Copyright (c) 1999 Luoqi Chen.
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 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
35 #include <sys/mutex.h>
36 #include <sys/malloc.h>
39 #include <machine/bus.h>
43 #include <cam/cam_ccb.h>
44 #include <cam/cam_sim.h>
45 #include <cam/cam_xpt_sim.h>
46 #include <cam/cam_debug.h>
48 #include <cam/scsi/scsi_message.h>
50 #include <dev/aic/aic6360reg.h>
51 #include <dev/aic/aicvar.h>
53 static void aic_action(struct cam_sim *sim, union ccb *ccb);
54 static void aic_execute_scb(void *arg, bus_dma_segment_t *dm_segs,
56 static void aic_intr_locked(struct aic_softc *aic);
57 static void aic_start(struct aic_softc *aic);
58 static void aic_select(struct aic_softc *aic);
59 static void aic_selected(struct aic_softc *aic);
60 static void aic_reselected(struct aic_softc *aic);
61 static void aic_reconnect(struct aic_softc *aic, int tag);
62 static void aic_cmd(struct aic_softc *aic);
63 static void aic_msgin(struct aic_softc *aic);
64 static void aic_handle_msgin(struct aic_softc *aic);
65 static void aic_msgout(struct aic_softc *aic);
66 static void aic_datain(struct aic_softc *aic);
67 static void aic_dataout(struct aic_softc *aic);
68 static void aic_done(struct aic_softc *aic, struct aic_scb *scb);
69 static void aic_poll(struct cam_sim *sim);
70 static void aic_timeout(void *arg);
71 static void aic_scsi_reset(struct aic_softc *aic);
72 static void aic_chip_reset(struct aic_softc *aic);
73 static void aic_reset(struct aic_softc *aic, int initiate_reset);
75 devclass_t aic_devclass;
77 static struct aic_scb *
78 aic_get_scb(struct aic_softc *aic)
83 mtx_assert(&aic->lock, MA_OWNED);
84 if ((scb = SLIST_FIRST(&aic->free_scbs)) != NULL)
85 SLIST_REMOVE_HEAD(&aic->free_scbs, link);
90 aic_free_scb(struct aic_softc *aic, struct aic_scb *scb)
94 mtx_assert(&aic->lock, MA_OWNED);
95 if ((aic->flags & AIC_RESOURCE_SHORTAGE) != 0 &&
96 (scb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
97 scb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
98 aic->flags &= ~AIC_RESOURCE_SHORTAGE;
101 SLIST_INSERT_HEAD(&aic->free_scbs, scb, link);
105 aic_action(struct cam_sim *sim, union ccb *ccb)
107 struct aic_softc *aic;
109 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("aic_action\n"));
111 aic = (struct aic_softc *)cam_sim_softc(sim);
112 mtx_assert(&aic->lock, MA_OWNED);
114 switch (ccb->ccb_h.func_code) {
115 case XPT_SCSI_IO: /* Execute the requested I/O operation */
116 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
120 if ((scb = aic_get_scb(aic)) == NULL) {
121 aic->flags |= AIC_RESOURCE_SHORTAGE;
122 xpt_freeze_simq(aic->sim, /*count*/1);
123 ccb->ccb_h.status = CAM_REQUEUE_REQ;
129 ccb->ccb_h.ccb_scb_ptr = scb;
130 ccb->ccb_h.ccb_aic_ptr = aic;
132 scb->target = ccb->ccb_h.target_id;
133 scb->lun = ccb->ccb_h.target_lun;
135 if (ccb->ccb_h.func_code == XPT_SCSI_IO) {
136 scb->cmd_len = ccb->csio.cdb_len;
137 if (ccb->ccb_h.flags & CAM_CDB_POINTER) {
138 if (ccb->ccb_h.flags & CAM_CDB_PHYS) {
139 ccb->ccb_h.status = CAM_REQ_INVALID;
140 aic_free_scb(aic, scb);
144 scb->cmd_ptr = ccb->csio.cdb_io.cdb_ptr;
146 scb->cmd_ptr = ccb->csio.cdb_io.cdb_bytes;
148 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
149 if ((ccb->ccb_h.flags & CAM_DATA_MASK) !=
151 ccb->ccb_h.status = CAM_REQ_INVALID;
152 aic_free_scb(aic, scb);
156 scb->data_ptr = ccb->csio.data_ptr;
157 scb->data_len = ccb->csio.dxfer_len;
159 scb->data_ptr = NULL;
162 aic_execute_scb(scb, NULL, 0, 0);
164 scb->flags |= SCB_DEVICE_RESET;
165 aic_execute_scb(scb, NULL, 0, 0);
169 case XPT_SET_TRAN_SETTINGS:
171 struct ccb_trans_settings *cts = &ccb->cts;
172 struct aic_tinfo *ti = &aic->tinfo[ccb->ccb_h.target_id];
173 struct ccb_trans_settings_scsi *scsi =
174 &cts->proto_specific.scsi;
175 struct ccb_trans_settings_spi *spi =
176 &cts->xport_specific.spi;
178 if ((spi->valid & CTS_SPI_VALID_DISC) != 0 &&
179 (aic->flags & AIC_DISC_ENABLE) != 0) {
180 if ((spi->flags & CTS_SPI_FLAGS_DISC_ENB) != 0)
181 ti->flags |= TINFO_DISC_ENB;
183 ti->flags &= ~TINFO_DISC_ENB;
186 if ((scsi->valid & CTS_SCSI_VALID_TQ) != 0) {
187 if ((scsi->flags & CTS_SCSI_FLAGS_TAG_ENB) != 0)
188 ti->flags |= TINFO_TAG_ENB;
190 ti->flags &= ~TINFO_TAG_ENB;
193 if ((spi->valid & CTS_SPI_VALID_SYNC_RATE) != 0) {
194 ti->goal.period = spi->sync_period;
196 if (ti->goal.period > aic->min_period) {
199 } else if (ti->goal.period < aic->max_period)
200 ti->goal.period = aic->max_period;
203 if ((spi->valid & CTS_SPI_VALID_SYNC_OFFSET) != 0) {
204 ti->goal.offset = spi->sync_offset;
205 if (ti->goal.offset == 0)
207 else if (ti->goal.offset > AIC_SYNC_OFFSET)
208 ti->goal.offset = AIC_SYNC_OFFSET;
211 if ((ti->goal.period != ti->current.period)
212 || (ti->goal.offset != ti->current.offset))
213 ti->flags |= TINFO_SDTR_NEGO;
215 ccb->ccb_h.status = CAM_REQ_CMP;
219 case XPT_GET_TRAN_SETTINGS:
221 struct ccb_trans_settings *cts = &ccb->cts;
222 struct aic_tinfo *ti = &aic->tinfo[ccb->ccb_h.target_id];
223 struct ccb_trans_settings_scsi *scsi =
224 &cts->proto_specific.scsi;
225 struct ccb_trans_settings_spi *spi =
226 &cts->xport_specific.spi;
228 cts->protocol = PROTO_SCSI;
229 cts->protocol_version = SCSI_REV_2;
230 cts->transport = XPORT_SPI;
231 cts->transport_version = 2;
232 scsi->flags &= ~CTS_SCSI_FLAGS_TAG_ENB;
233 spi->flags &= ~CTS_SPI_FLAGS_DISC_ENB;
235 if ((ti->flags & TINFO_DISC_ENB) != 0)
236 spi->flags |= CTS_SPI_FLAGS_DISC_ENB;
237 if ((ti->flags & TINFO_TAG_ENB) != 0)
238 scsi->flags |= CTS_SCSI_FLAGS_TAG_ENB;
240 if (cts->type == CTS_TYPE_CURRENT_SETTINGS) {
241 spi->sync_period = ti->current.period;
242 spi->sync_offset = ti->current.offset;
244 spi->sync_period = ti->user.period;
245 spi->sync_offset = ti->user.offset;
248 spi->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
249 spi->valid = CTS_SPI_VALID_SYNC_RATE
250 | CTS_SPI_VALID_SYNC_OFFSET
251 | CTS_SPI_VALID_BUS_WIDTH
252 | CTS_SPI_VALID_DISC;
253 scsi->valid = CTS_SCSI_VALID_TQ;
255 ccb->ccb_h.status = CAM_REQ_CMP;
259 case XPT_CALC_GEOMETRY:
261 cam_calc_geometry(&ccb->ccg, /*extended*/1);
265 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
266 aic_reset(aic, /*initiate_reset*/TRUE);
267 ccb->ccb_h.status = CAM_REQ_CMP;
270 case XPT_PATH_INQ: /* Path routing inquiry */
272 struct ccb_pathinq *cpi = &ccb->cpi;
274 cpi->version_num = 1; /* XXX??? */
275 cpi->hba_inquiry = PI_SDTR_ABLE | PI_TAG_ABLE;
276 cpi->target_sprt = 0;
278 cpi->hba_eng_cnt = 0;
281 cpi->initiator_id = aic->initiator;
282 cpi->bus_id = cam_sim_bus(sim);
283 cpi->base_transfer_speed = 3300;
284 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
285 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
286 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
287 cpi->unit_number = cam_sim_unit(sim);
288 cpi->transport = XPORT_SPI;
289 cpi->transport_version = 2;
290 cpi->protocol = PROTO_SCSI;
291 cpi->protocol_version = SCSI_REV_2;
292 cpi->ccb_h.status = CAM_REQ_CMP;
297 ccb->ccb_h.status = CAM_REQ_INVALID;
304 aic_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
306 struct aic_scb *scb = (struct aic_scb *)arg;
307 union ccb *ccb = scb->ccb;
308 struct aic_softc *aic = (struct aic_softc *)ccb->ccb_h.ccb_aic_ptr;
311 mtx_assert(&aic->lock, MA_OWNED);
312 if (ccb->ccb_h.status != CAM_REQ_INPROG) {
313 aic_free_scb(aic, scb);
318 scb->flags |= SCB_ACTIVE;
319 ccb->ccb_h.status |= CAM_SIM_QUEUED;
320 TAILQ_INSERT_TAIL(&aic->pending_ccbs, &ccb->ccb_h, sim_links.tqe);
322 callout_reset_sbt(&scb->timer, SBT_1MS * ccb->ccb_h.timeout, 0,
323 aic_timeout, scb, 0);
329 * Start another command if the controller is not busy.
332 aic_start(struct aic_softc *aic)
334 struct ccb_hdr *ccb_h;
335 struct aic_tinfo *ti;
337 if (aic->state != AIC_IDLE)
340 TAILQ_FOREACH(ccb_h, &aic->pending_ccbs, sim_links.tqe) {
341 ti = &aic->tinfo[ccb_h->target_id];
342 if ((ti->lubusy & (1 << ccb_h->target_lun)) == 0) {
343 TAILQ_REMOVE(&aic->pending_ccbs, ccb_h, sim_links.tqe);
344 aic->nexus = (struct aic_scb *)ccb_h->ccb_scb_ptr;
350 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_start: idle\n"));
352 aic_outb(aic, SIMODE0, ENSELDI);
353 aic_outb(aic, SIMODE1, ENSCSIRST);
354 aic_outb(aic, SCSISEQ, ENRESELI);
361 aic_select(struct aic_softc *aic)
363 struct aic_scb *scb = aic->nexus;
365 CAM_DEBUG(scb->ccb->ccb_h.path, CAM_DEBUG_TRACE,
366 ("aic_select - ccb %p\n", scb->ccb));
368 aic->state = AIC_SELECTING;
370 aic_outb(aic, DMACNTRL1, 0);
371 aic_outb(aic, SCSIID, aic->initiator << OID_S | scb->target);
372 aic_outb(aic, SXFRCTL1, STIMO_256ms | ENSTIMER |
373 (aic->flags & AIC_PARITY_ENABLE ? ENSPCHK : 0));
375 aic_outb(aic, SIMODE0, ENSELDI|ENSELDO);
376 aic_outb(aic, SIMODE1, ENSCSIRST|ENSELTIMO);
377 aic_outb(aic, SCSISEQ, ENRESELI|ENSELO|ENAUTOATNO);
381 * We have successfully selected a target, prepare for the information
385 aic_selected(struct aic_softc *aic)
387 struct aic_scb *scb = aic->nexus;
388 union ccb *ccb = scb->ccb;
389 struct aic_tinfo *ti = &aic->tinfo[scb->target];
391 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
392 ("aic_selected - ccb %p\n", ccb));
394 aic->state = AIC_HASNEXUS;
396 if (scb->flags & SCB_DEVICE_RESET) {
397 aic->msg_buf[0] = MSG_BUS_DEV_RESET;
399 aic->msg_outq = AIC_MSG_MSGBUF;
401 aic->msg_outq = AIC_MSG_IDENTIFY;
402 if ((ti->flags & TINFO_TAG_ENB) != 0 &&
403 (ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0)
404 aic->msg_outq |= AIC_MSG_TAG_Q;
406 ti->lubusy |= 1 << scb->lun;
407 if ((ti->flags & TINFO_SDTR_NEGO) != 0)
408 aic->msg_outq |= AIC_MSG_SDTR;
411 aic_outb(aic, CLRSINT0, CLRSELDO);
412 aic_outb(aic, CLRSINT1, CLRBUSFREE);
413 aic_outb(aic, SCSISEQ, ENAUTOATNP);
414 aic_outb(aic, SIMODE0, 0);
415 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
416 aic_outb(aic, SCSIRATE, ti->scsirate);
420 * We are re-selected by a target, save the target id and wait for the
421 * target to further identify itself.
424 aic_reselected(struct aic_softc *aic)
428 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reselected\n"));
431 * If we have started a selection, it must have lost out in
432 * the arbitration, put the command back to the pending queue.
435 TAILQ_INSERT_HEAD(&aic->pending_ccbs,
436 &aic->nexus->ccb->ccb_h, sim_links.tqe);
440 selid = aic_inb(aic, SELID) & ~(1 << aic->initiator);
441 if (selid & (selid - 1)) {
442 /* this should never have happened */
443 printf("aic_reselected: invalid selid %x\n", selid);
444 aic_reset(aic, /*initiate_reset*/TRUE);
448 aic->state = AIC_RESELECTED;
449 aic->target = ffs(selid) - 1;
452 aic_outb(aic, CLRSINT0, CLRSELDI);
453 aic_outb(aic, CLRSINT1, CLRBUSFREE);
454 aic_outb(aic, SIMODE0, 0);
455 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
456 aic_outb(aic, SCSISEQ, ENAUTOATNP);
457 aic_outb(aic, SCSIRATE, aic->tinfo[aic->target].scsirate);
461 * Raise ATNO to signal the target that we have a message for it.
464 aic_sched_msgout(struct aic_softc *aic, u_int8_t msg)
467 aic->msg_buf[0] = msg;
470 aic->msg_outq |= AIC_MSG_MSGBUF;
471 aic_outb(aic, SCSISIGO, aic_inb(aic, SCSISIGI) | ATNO);
475 * Wait for SPIORDY (SCSI PIO ready) flag, or a phase change.
478 aic_spiordy(struct aic_softc *aic)
480 while (!(aic_inb(aic, DMASTAT) & INTSTAT) &&
481 !(aic_inb(aic, SSTAT0) & SPIORDY))
483 return !(aic_inb(aic, DMASTAT) & INTSTAT);
487 * Reestablish a disconnected nexus.
490 aic_reconnect(struct aic_softc *aic, int tag)
493 struct ccb_hdr *ccb_h;
495 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reconnect\n"));
499 TAILQ_FOREACH(ccb_h, &aic->nexus_ccbs, sim_links.tqe) {
500 scb = (struct aic_scb *)ccb_h->ccb_scb_ptr;
501 if (scb->target == aic->target && scb->lun == aic->lun &&
502 (tag == -1 || scb->tag == tag))
506 /* ABORT if nothing is found */
509 aic_sched_msgout(aic, MSG_ABORT);
511 aic_sched_msgout(aic, MSG_ABORT_TAG);
512 xpt_async(AC_UNSOL_RESEL, aic->path, NULL);
516 /* Reestablish the nexus */
517 TAILQ_REMOVE(&aic->nexus_ccbs, ccb_h, sim_links.tqe);
519 scb->flags &= ~SCB_DISCONNECTED;
520 aic->state = AIC_HASNEXUS;
527 aic_msgin(struct aic_softc *aic)
531 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_msgin\n"));
533 aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE);
534 aic_outb(aic, SXFRCTL0, CHEN|SPIOEN);
536 aic->flags &= ~AIC_DROP_MSGIN;
540 * If a parity error is detected, drop the remaining
541 * bytes and inform the target so it could resend
544 if (aic_inb(aic, SSTAT1) & SCSIPERR) {
545 aic_outb(aic, CLRSINT1, CLRSCSIPERR);
546 aic->flags |= AIC_DROP_MSGIN;
547 aic_sched_msgout(aic, MSG_PARITY_ERROR);
549 if ((aic->flags & AIC_DROP_MSGIN)) {
550 aic_inb(aic, SCSIDAT);
553 /* read the message byte without ACKing on it */
554 aic->msg_buf[aic->msg_len++] = aic_inb(aic, SCSIBUS);
555 if (aic->msg_buf[0] == MSG_EXTENDED) {
556 if (aic->msg_len < 2) {
557 (void) aic_inb(aic, SCSIDAT);
560 switch (aic->msg_buf[2]) {
562 msglen = MSG_EXT_SDTR_LEN;
565 msglen = MSG_EXT_WDTR_LEN;
571 if (aic->msg_buf[1] != msglen) {
572 aic->flags |= AIC_DROP_MSGIN;
573 aic_sched_msgout(aic, MSG_MESSAGE_REJECT);
576 } else if (aic->msg_buf[0] >= 0x20 && aic->msg_buf[0] <= 0x2f)
581 * If we have a complete message, handle it before the final
582 * ACK (in case we decide to reject the message).
584 if (aic->msg_len == msglen) {
585 aic_handle_msgin(aic);
588 /* ACK on the message byte */
589 (void) aic_inb(aic, SCSIDAT);
590 } while (aic_spiordy(aic));
592 aic_outb(aic, SXFRCTL0, CHEN);
593 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
600 aic_handle_msgin(struct aic_softc *aic)
603 struct ccb_hdr *ccb_h;
604 struct aic_tinfo *ti;
605 struct ccb_trans_settings neg;
606 struct ccb_trans_settings_spi *spi = &neg.xport_specific.spi;
608 if (aic->state == AIC_RESELECTED) {
609 if (!MSG_ISIDENTIFY(aic->msg_buf[0])) {
610 aic_sched_msgout(aic, MSG_MESSAGE_REJECT);
613 aic->lun = aic->msg_buf[0] & MSG_IDENTIFY_LUNMASK;
614 if (aic->tinfo[aic->target].lubusy & (1 << aic->lun))
615 aic_reconnect(aic, -1);
617 aic->state = AIC_RECONNECTING;
621 if (aic->state == AIC_RECONNECTING) {
622 if (aic->msg_buf[0] != MSG_SIMPLE_Q_TAG) {
623 aic_sched_msgout(aic, MSG_MESSAGE_REJECT);
626 aic_reconnect(aic, aic->msg_buf[1]);
630 switch (aic->msg_buf[0]) {
631 case MSG_CMDCOMPLETE: {
632 struct ccb_scsiio *csio;
634 ccb_h = &scb->ccb->ccb_h;
635 csio = &scb->ccb->csio;
636 if ((scb->flags & SCB_SENSE) != 0) {
637 /* auto REQUEST SENSE command */
638 scb->flags &= ~SCB_SENSE;
639 csio->sense_resid = scb->data_len;
640 if (scb->status == SCSI_STATUS_OK) {
642 CAM_SCSI_STATUS_ERROR|CAM_AUTOSNS_VALID;
643 /*scsi_sense_print(csio);*/
645 ccb_h->status |= CAM_AUTOSENSE_FAIL;
646 printf("ccb %p sense failed %x\n",
650 csio->scsi_status = scb->status;
651 csio->resid = scb->data_len;
652 if (scb->status == SCSI_STATUS_OK) {
653 /* everything goes well */
654 ccb_h->status |= CAM_REQ_CMP;
655 } else if ((ccb_h->flags & CAM_DIS_AUTOSENSE) == 0 &&
656 (csio->scsi_status == SCSI_STATUS_CHECK_COND ||
657 csio->scsi_status == SCSI_STATUS_CMD_TERMINATED)) {
658 /* try to retrieve sense information */
659 scb->flags |= SCB_SENSE;
660 aic->flags |= AIC_BUSFREE_OK;
663 ccb_h->status |= CAM_SCSI_STATUS_ERROR;
666 aic->flags |= AIC_BUSFREE_OK;
670 switch (aic->msg_buf[2]) {
673 ti = &aic->tinfo[scb->target];
674 if (ti->flags & TINFO_SDTR_SENT) {
675 ti->current.period = aic->msg_buf[3];
676 ti->current.offset = aic->msg_buf[4];
678 ti->current.period = aic->msg_buf[3] =
679 max(ti->goal.period, aic->msg_buf[3]);
680 ti->current.offset = aic->msg_buf[4] =
681 min(ti->goal.offset, aic->msg_buf[4]);
683 * The target initiated the negotiation,
684 * send back a response.
686 aic_sched_msgout(aic, 0);
688 ti->flags &= ~(TINFO_SDTR_SENT|TINFO_SDTR_NEGO);
689 ti->scsirate = ti->current.offset ? ti->current.offset |
690 ((ti->current.period * 4 + 49) / 50 - 2) << 4 : 0;
691 aic_outb(aic, SCSIRATE, ti->scsirate);
692 memset(&neg, 0, sizeof (neg));
693 neg.protocol = PROTO_SCSI;
694 neg.protocol_version = SCSI_REV_2;
695 neg.transport = XPORT_SPI;
696 neg.transport_version = 2;
697 spi->sync_period = ti->goal.period = ti->current.period;
698 spi->sync_offset = ti->goal.offset = ti->current.offset;
699 spi->valid = CTS_SPI_VALID_SYNC_RATE
700 | CTS_SPI_VALID_SYNC_OFFSET;
701 ccb_h = &scb->ccb->ccb_h;
702 xpt_setup_ccb(&neg.ccb_h, ccb_h->path, 1);
703 xpt_async(AC_TRANSFER_NEG, ccb_h->path, &neg);
707 aic_sched_msgout(aic, MSG_MESSAGE_REJECT);
713 ccb_h = &scb->ccb->ccb_h;
714 TAILQ_INSERT_TAIL(&aic->nexus_ccbs, ccb_h, sim_links.tqe);
715 scb->flags |= SCB_DISCONNECTED;
716 aic->flags |= AIC_BUSFREE_OK;
718 CAM_DEBUG(ccb_h->path, CAM_DEBUG_TRACE, ("disconnected\n"));
720 case MSG_MESSAGE_REJECT:
721 switch (aic->msg_outq & -aic->msg_outq) {
724 ti = &aic->tinfo[scb->target];
725 ti->flags &= ~TINFO_TAG_ENB;
726 ti->lubusy |= 1 << scb->lun;
730 ti = &aic->tinfo[scb->target];
731 ti->current.period = ti->goal.period = 0;
732 ti->current.offset = ti->goal.offset = 0;
733 ti->flags &= ~(TINFO_SDTR_SENT|TINFO_SDTR_NEGO);
735 aic_outb(aic, SCSIRATE, ti->scsirate);
736 memset(&neg, 0, sizeof (neg));
737 neg.protocol = PROTO_SCSI;
738 neg.protocol_version = SCSI_REV_2;
739 neg.transport = XPORT_SPI;
740 neg.transport_version = 2;
741 spi->sync_period = ti->current.period;
742 spi->sync_offset = ti->current.offset;
743 spi->valid = CTS_SPI_VALID_SYNC_RATE
744 | CTS_SPI_VALID_SYNC_OFFSET;
745 ccb_h = &scb->ccb->ccb_h;
746 xpt_setup_ccb(&neg.ccb_h, ccb_h->path, 1);
747 xpt_async(AC_TRANSFER_NEG, ccb_h->path, &neg);
753 case MSG_SAVEDATAPOINTER:
755 case MSG_RESTOREPOINTERS:
760 aic_sched_msgout(aic, MSG_MESSAGE_REJECT);
769 aic_msgout(struct aic_softc *aic)
773 struct aic_tinfo *ti;
776 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_msgout\n"));
778 aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE);
779 aic_outb(aic, SXFRCTL0, CHEN|SPIOEN);
782 * If the previous phase is also the message out phase,
783 * we need to retransmit all the messages, probably
784 * because the target has detected a parity error during
785 * the past transmission.
787 if (aic->prev_phase == PH_MSGOUT)
788 aic->msg_outq = aic->msg_sent;
791 int q = aic->msg_outq;
792 if (msgidx > 0 && msgidx == aic->msg_len) {
793 /* complete message sent, start the next one */
801 /* setup the message */
803 case AIC_MSG_IDENTIFY:
806 ti = &aic->tinfo[scb->target];
807 aic->msg_buf[0] = MSG_IDENTIFY(scb->lun,
808 (ti->flags & TINFO_DISC_ENB) &&
809 !(ccb->ccb_h.flags & CAM_DIS_DISCONNECT));
815 aic->msg_buf[0] = ccb->csio.tag_action;
816 aic->msg_buf[1] = scb->tag;
821 ti = &aic->tinfo[scb->target];
822 aic->msg_buf[0] = MSG_EXTENDED;
823 aic->msg_buf[1] = MSG_EXT_SDTR_LEN;
824 aic->msg_buf[2] = MSG_EXT_SDTR;
825 aic->msg_buf[3] = ti->goal.period;
826 aic->msg_buf[4] = ti->goal.offset;
827 aic->msg_len = MSG_EXT_SDTR_LEN + 2;
828 ti->flags |= TINFO_SDTR_SENT;
831 /* a single message already in the buffer */
832 if (aic->msg_buf[0] == MSG_BUS_DEV_RESET ||
833 aic->msg_buf[0] == MSG_ABORT ||
834 aic->msg_buf[0] == MSG_ABORT_TAG)
835 aic->flags |= AIC_BUSFREE_OK;
840 * If this is the last message byte of all messages,
841 * clear ATNO to signal transmission complete.
843 if ((q & (q - 1)) == 0 && msgidx == aic->msg_len - 1)
844 aic_outb(aic, CLRSINT1, CLRATNO);
845 /* transmit the message byte */
846 aic_outb(aic, SCSIDAT, aic->msg_buf[msgidx++]);
847 } while (aic_spiordy(aic));
849 aic_outb(aic, SXFRCTL0, CHEN);
850 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
857 aic_datain(struct aic_softc *aic)
859 struct aic_scb *scb = aic->nexus;
860 u_int8_t dmastat, dmacntrl0;
863 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_datain\n"));
865 aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE);
866 aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN);
869 if (aic->flags & AIC_DWIO_ENABLE)
870 dmacntrl0 |= DWORDPIO;
871 aic_outb(aic, DMACNTRL0, dmacntrl0);
873 while (scb->data_len > 0) {
875 /* wait for the fifo to fill up or a phase change */
876 dmastat = aic_inb(aic, DMASTAT);
877 if (dmastat & (INTSTAT|DFIFOFULL))
880 if (dmastat & DFIFOFULL) {
884 * No more data, wait for the remaining bytes in
885 * the scsi fifo to be transfer to the host fifo.
887 while (!(aic_inb(aic, SSTAT2) & SEMPTY))
889 n = aic_inb(aic, FIFOSTAT);
891 n = imin(scb->data_len, n);
892 if (aic->flags & AIC_DWIO_ENABLE) {
894 aic_insl(aic, DMADATALONG, scb->data_ptr, n>>2);
895 scb->data_ptr += n & ~3;
896 scb->data_len -= n & ~3;
901 aic_insw(aic, DMADATA, scb->data_ptr, n >> 1);
902 scb->data_ptr += n & ~1;
903 scb->data_len -= n & ~1;
908 aic_outb(aic, DMACNTRL0, ENDMA|B8MODE);
909 aic_insb(aic, DMADATA, scb->data_ptr, n);
912 aic_outb(aic, DMACNTRL0, dmacntrl0);
915 if (dmastat & INTSTAT)
919 aic_outb(aic, SXFRCTL0, CHEN);
920 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
927 aic_dataout(struct aic_softc *aic)
929 struct aic_scb *scb = aic->nexus;
930 u_int8_t dmastat, dmacntrl0, sstat2;
933 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_dataout\n"));
935 aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE);
936 aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN);
938 dmacntrl0 = ENDMA|WRITE;
939 if (aic->flags & AIC_DWIO_ENABLE)
940 dmacntrl0 |= DWORDPIO;
941 aic_outb(aic, DMACNTRL0, dmacntrl0);
943 while (scb->data_len > 0) {
945 /* wait for the fifo to clear up or a phase change */
946 dmastat = aic_inb(aic, DMASTAT);
947 if (dmastat & (INTSTAT|DFIFOEMP))
950 if (dmastat & INTSTAT)
952 n = imin(scb->data_len, FIFOSIZE);
953 if (aic->flags & AIC_DWIO_ENABLE) {
955 aic_outsl(aic, DMADATALONG, scb->data_ptr,n>>2);
956 scb->data_ptr += n & ~3;
957 scb->data_len -= n & ~3;
962 aic_outsw(aic, DMADATA, scb->data_ptr, n >> 1);
963 scb->data_ptr += n & ~1;
964 scb->data_len -= n & ~1;
969 aic_outb(aic, DMACNTRL0, ENDMA|WRITE|B8MODE);
970 aic_outsb(aic, DMADATA, scb->data_ptr, n);
973 aic_outb(aic, DMACNTRL0, dmacntrl0);
978 /* wait until all bytes in the fifos are transmitted */
979 dmastat = aic_inb(aic, DMASTAT);
980 sstat2 = aic_inb(aic, SSTAT2);
981 if ((dmastat & DFIFOEMP) && (sstat2 & SEMPTY))
983 if (dmastat & INTSTAT) {
984 /* adjust for untransmitted bytes */
985 n = aic_inb(aic, FIFOSTAT) + (sstat2 & 0xf);
989 aic_outb(aic, SXFRCTL0, CHEN|CLRCH);
990 aic_outb(aic, DMACNTRL0, RSTFIFO);
995 aic_outb(aic, SXFRCTL0, CHEN);
996 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
1000 * Send the scsi command.
1003 aic_cmd(struct aic_softc *aic)
1005 struct aic_scb *scb = aic->nexus;
1006 struct scsi_request_sense sense_cmd;
1008 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_cmd\n"));
1010 if (scb->flags & SCB_SENSE) {
1011 /* autosense request */
1012 sense_cmd.opcode = REQUEST_SENSE;
1013 sense_cmd.byte2 = scb->lun << 5;
1014 sense_cmd.length = scb->ccb->csio.sense_len;
1015 sense_cmd.control = 0;
1016 sense_cmd.unused[0] = 0;
1017 sense_cmd.unused[1] = 0;
1018 scb->cmd_ptr = (u_int8_t *)&sense_cmd;
1019 scb->cmd_len = sizeof(sense_cmd);
1020 scb->data_ptr = (u_int8_t *)&scb->ccb->csio.sense_data;
1021 scb->data_len = scb->ccb->csio.sense_len;
1024 aic_outb(aic, SIMODE1, ENSCSIRST|ENPHASEMIS|ENBUSFREE);
1025 aic_outb(aic, DMACNTRL0, ENDMA|WRITE);
1026 aic_outb(aic, SXFRCTL0, SCSIEN|DMAEN|CHEN);
1027 aic_outsw(aic, DMADATA, (u_int16_t *)scb->cmd_ptr, scb->cmd_len >> 1);
1028 while ((aic_inb(aic, SSTAT2) & SEMPTY) == 0 &&
1029 (aic_inb(aic, DMASTAT) & INTSTAT) == 0)
1031 aic_outb(aic, SXFRCTL0, CHEN);
1032 aic_outb(aic, SIMODE1, ENSCSIRST|ENBUSFREE|ENREQINIT);
1036 * Finish off a command. The caller is responsible to remove the ccb
1040 aic_done(struct aic_softc *aic, struct aic_scb *scb)
1042 union ccb *ccb = scb->ccb;
1044 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
1045 ("aic_done - ccb %p status %x resid %d\n",
1046 ccb, ccb->ccb_h.status, ccb->csio.resid));
1048 callout_stop(&scb->timer);
1050 if ((scb->flags & SCB_DEVICE_RESET) != 0 &&
1051 ccb->ccb_h.func_code != XPT_RESET_DEV) {
1052 struct cam_path *path;
1053 struct ccb_hdr *ccb_h;
1056 error = xpt_create_path(&path, /*periph*/NULL,
1057 cam_sim_path(aic->sim),
1061 if (error == CAM_REQ_CMP) {
1062 xpt_async(AC_SENT_BDR, path, NULL);
1063 xpt_free_path(path);
1066 ccb_h = TAILQ_FIRST(&aic->pending_ccbs);
1067 while (ccb_h != NULL) {
1068 struct aic_scb *pending_scb;
1070 pending_scb = (struct aic_scb *)ccb_h->ccb_scb_ptr;
1071 if (ccb_h->target_id == scb->target) {
1072 ccb_h->status |= CAM_BDR_SENT;
1073 ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe);
1074 TAILQ_REMOVE(&aic->pending_ccbs,
1075 &pending_scb->ccb->ccb_h, sim_links.tqe);
1076 aic_done(aic, pending_scb);
1078 callout_reset_sbt(&pending_scb->timer,
1079 SBT_1MS * ccb_h->timeout, 0, aic_timeout,
1081 ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe);
1085 ccb_h = TAILQ_FIRST(&aic->nexus_ccbs);
1086 while (ccb_h != NULL) {
1087 struct aic_scb *nexus_scb;
1089 nexus_scb = (struct aic_scb *)ccb_h->ccb_scb_ptr;
1090 if (ccb_h->target_id == scb->target) {
1091 ccb_h->status |= CAM_BDR_SENT;
1092 ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe);
1093 TAILQ_REMOVE(&aic->nexus_ccbs,
1094 &nexus_scb->ccb->ccb_h, sim_links.tqe);
1095 aic_done(aic, nexus_scb);
1097 callout_reset_sbt(&nexus_scb->timer,
1098 SBT_1MS * ccb_h->timeout, 0, aic_timeout,
1100 ccb_h = TAILQ_NEXT(ccb_h, sim_links.tqe);
1105 if (aic->nexus == scb || scb->flags & SCB_DISCONNECTED)
1106 aic->tinfo[scb->target].lubusy &= ~(1 << scb->lun);
1108 if (aic->nexus == scb) {
1111 aic_free_scb(aic, scb);
1116 aic_poll(struct cam_sim *sim)
1118 aic_intr_locked(cam_sim_softc(sim));
1122 aic_timeout(void *arg)
1124 struct aic_scb *scb = (struct aic_scb *)arg;
1125 union ccb *ccb = scb->ccb;
1126 struct aic_softc *aic = (struct aic_softc *)ccb->ccb_h.ccb_aic_ptr;
1128 mtx_assert(&aic->lock, MA_OWNED);
1129 xpt_print_path(ccb->ccb_h.path);
1130 printf("ccb %p - timed out", ccb);
1131 if (aic->nexus && aic->nexus != scb)
1132 printf(", nexus %p", aic->nexus->ccb);
1133 printf(", phase 0x%x, state %d\n", aic_inb(aic, SCSISIGI), aic->state);
1135 if ((scb->flags & SCB_ACTIVE) == 0) {
1136 xpt_print_path(ccb->ccb_h.path);
1137 printf("ccb %p - timed out already completed\n", ccb);
1141 if ((scb->flags & SCB_DEVICE_RESET) == 0 && aic->nexus == scb) {
1142 struct ccb_hdr *ccb_h = &scb->ccb->ccb_h;
1143 struct aic_scb *pending_scb;
1145 if ((ccb_h->status & CAM_RELEASE_SIMQ) == 0) {
1146 xpt_freeze_simq(aic->sim, /*count*/1);
1147 ccb_h->status |= CAM_RELEASE_SIMQ;
1150 TAILQ_FOREACH(ccb_h, &aic->pending_ccbs, sim_links.tqe) {
1151 pending_scb = ccb_h->ccb_scb_ptr;
1152 callout_stop(&pending_scb->timer);
1155 TAILQ_FOREACH(ccb_h, &aic->nexus_ccbs, sim_links.tqe) {
1156 pending_scb = ccb_h->ccb_scb_ptr;
1157 callout_stop(&pending_scb->timer);
1160 scb->flags |= SCB_DEVICE_RESET;
1161 callout_reset(&scb->timer, 5 * hz, aic_timeout, scb);
1162 aic_sched_msgout(aic, MSG_BUS_DEV_RESET);
1164 if (aic->nexus == scb) {
1165 ccb->ccb_h.status |= CAM_CMD_TIMEOUT;
1168 aic_reset(aic, /*initiate_reset*/TRUE);
1175 struct aic_softc *aic = (struct aic_softc *)arg;
1177 mtx_lock(&aic->lock);
1178 aic_intr_locked(aic);
1179 mtx_unlock(&aic->lock);
1183 aic_intr_locked(struct aic_softc *aic)
1185 u_int8_t sstat0, sstat1;
1187 struct aic_scb *scb;
1189 if (!(aic_inb(aic, DMASTAT) & INTSTAT))
1192 aic_outb(aic, DMACNTRL0, 0);
1194 sstat0 = aic_inb(aic, SSTAT0);
1195 sstat1 = aic_inb(aic, SSTAT1);
1197 if ((sstat1 & SCSIRSTI) != 0) {
1198 /* a device-initiated bus reset */
1199 aic_outb(aic, CLRSINT1, CLRSCSIRSTI);
1200 aic_reset(aic, /*initiate_reset*/FALSE);
1204 if ((sstat1 & SCSIPERR) != 0) {
1205 aic_outb(aic, CLRSINT1, CLRSCSIPERR);
1206 aic_sched_msgout(aic, MSG_PARITY_ERROR);
1207 aic_outb(aic, DMACNTRL0, INTEN);
1211 if (aic_inb(aic, SSTAT4)) {
1212 aic_outb(aic, CLRSERR, CLRSYNCERR|CLRFWERR|CLRFRERR);
1213 aic_reset(aic, /*initiate_reset*/TRUE);
1217 if (aic->state <= AIC_SELECTING) {
1218 if ((sstat0 & SELDI) != 0) {
1219 aic_reselected(aic);
1220 aic_outb(aic, DMACNTRL0, INTEN);
1224 if ((sstat0 & SELDO) != 0) {
1226 aic_outb(aic, DMACNTRL0, INTEN);
1230 if ((sstat1 & SELTO) != 0) {
1233 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
1235 while ((sstat1 & BUSFREE) == 0)
1236 sstat1 = aic_inb(aic, SSTAT1);
1237 aic->flags |= AIC_BUSFREE_OK;
1241 if ((sstat1 & BUSFREE) != 0) {
1242 aic_outb(aic, SCSISEQ, 0);
1243 aic_outb(aic, CLRSINT0, sstat0);
1244 aic_outb(aic, CLRSINT1, sstat1);
1245 if ((scb = aic->nexus)) {
1246 if ((aic->flags & AIC_BUSFREE_OK) == 0) {
1248 ccb->ccb_h.status = CAM_UNEXP_BUSFREE;
1250 } else if (scb->flags & SCB_DEVICE_RESET) {
1252 if (ccb->ccb_h.func_code == XPT_RESET_DEV) {
1253 xpt_async(AC_SENT_BDR,
1254 ccb->ccb_h.path, NULL);
1255 ccb->ccb_h.status |= CAM_REQ_CMP;
1257 ccb->ccb_h.status |= CAM_CMD_TIMEOUT;
1259 } else if (scb->flags & SCB_SENSE) {
1260 /* autosense request */
1261 aic->flags &= ~AIC_BUSFREE_OK;
1262 aic->tinfo[scb->target].lubusy &=
1265 aic_outb(aic, DMACNTRL0, INTEN);
1269 aic->flags &= ~AIC_BUSFREE_OK;
1270 aic->state = AIC_IDLE;
1272 aic_outb(aic, DMACNTRL0, INTEN);
1276 if ((sstat1 & REQINIT) != 0) {
1277 u_int8_t phase = aic_inb(aic, SCSISIGI) & PH_MASK;
1278 aic_outb(aic, SCSISIGO, phase);
1279 aic_outb(aic, CLRSINT1, CLRPHASECHG);
1291 aic_outb(aic, DMACNTRL0, 0);
1292 aic_outb(aic, SXFRCTL0, CHEN|SPIOEN);
1293 scb->status = aic_inb(aic, SCSIDAT);
1294 aic_outb(aic, SXFRCTL0, CHEN);
1306 aic->prev_phase = phase;
1307 aic_outb(aic, DMACNTRL0, INTEN);
1311 printf("aic_intr: unexpected intr sstat0 %x sstat1 %x\n",
1313 aic_outb(aic, DMACNTRL0, INTEN);
1320 aic_chip_reset(struct aic_softc *aic)
1323 * Doc. recommends to clear these two registers before
1324 * operations commence
1326 aic_outb(aic, SCSITEST, 0);
1327 aic_outb(aic, TEST, 0);
1329 /* Reset SCSI-FIFO and abort any transfers */
1330 aic_outb(aic, SXFRCTL0, CHEN|CLRCH|CLRSTCNT);
1332 /* Reset HOST-FIFO */
1333 aic_outb(aic, DMACNTRL0, RSTFIFO);
1334 aic_outb(aic, DMACNTRL1, 0);
1336 /* Disable all selection features */
1337 aic_outb(aic, SCSISEQ, 0);
1338 aic_outb(aic, SXFRCTL1, 0);
1340 /* Disable interrupts */
1341 aic_outb(aic, SIMODE0, 0);
1342 aic_outb(aic, SIMODE1, 0);
1344 /* Clear interrupts */
1345 aic_outb(aic, CLRSINT0, 0x7f);
1346 aic_outb(aic, CLRSINT1, 0xef);
1348 /* Disable synchronous transfers */
1349 aic_outb(aic, SCSIRATE, 0);
1351 /* Haven't seen ant errors (yet) */
1352 aic_outb(aic, CLRSERR, 0x07);
1354 /* Set our SCSI-ID */
1355 aic_outb(aic, SCSIID, aic->initiator << OID_S);
1356 aic_outb(aic, BRSTCNTRL, EISA_BRST_TIM);
1360 * Reset the SCSI bus
1363 aic_scsi_reset(struct aic_softc *aic)
1365 aic_outb(aic, SCSISEQ, SCSIRSTO);
1367 aic_outb(aic, SCSISEQ, 0);
1372 * Reset. Abort all pending commands.
1375 aic_reset(struct aic_softc *aic, int initiate_reset)
1377 struct ccb_hdr *ccb_h;
1379 CAM_DEBUG_PRINT(CAM_DEBUG_TRACE, ("aic_reset\n"));
1382 aic_scsi_reset(aic);
1383 aic_chip_reset(aic);
1385 xpt_async(AC_BUS_RESET, aic->path, NULL);
1387 while ((ccb_h = TAILQ_FIRST(&aic->pending_ccbs)) != NULL) {
1388 TAILQ_REMOVE(&aic->pending_ccbs, ccb_h, sim_links.tqe);
1389 ccb_h->status |= CAM_SCSI_BUS_RESET;
1390 aic_done(aic, (struct aic_scb *)ccb_h->ccb_scb_ptr);
1393 while ((ccb_h = TAILQ_FIRST(&aic->nexus_ccbs)) != NULL) {
1394 TAILQ_REMOVE(&aic->nexus_ccbs, ccb_h, sim_links.tqe);
1395 ccb_h->status |= CAM_SCSI_BUS_RESET;
1396 aic_done(aic, (struct aic_scb *)ccb_h->ccb_scb_ptr);
1400 ccb_h = &aic->nexus->ccb->ccb_h;
1401 ccb_h->status |= CAM_SCSI_BUS_RESET;
1402 aic_done(aic, aic->nexus);
1405 aic->state = AIC_IDLE;
1406 aic_outb(aic, DMACNTRL0, INTEN);
1409 static char *aic_chip_names[] = {
1410 "AIC6260", "AIC6360", "AIC6370", "GM82C700",
1416 } aic_chip_ids[] = {
1417 { AIC6360, IDSTRING_AIC6360 },
1418 { AIC6370, IDSTRING_AIC6370 },
1419 { GM82C700, IDSTRING_GM82C700 },
1423 aic_init(struct aic_softc *aic)
1425 struct aic_scb *scb;
1426 struct aic_tinfo *ti;
1427 u_int8_t porta, portb;
1431 TAILQ_INIT(&aic->pending_ccbs);
1432 TAILQ_INIT(&aic->nexus_ccbs);
1433 SLIST_INIT(&aic->free_scbs);
1435 aic->state = AIC_IDLE;
1436 aic->prev_phase = -1;
1439 aic_chip_reset(aic);
1440 aic_scsi_reset(aic);
1442 /* determine the chip type from its ID string */
1443 aic->chip_type = AIC6260;
1444 aic_insb(aic, ID, chip_id, sizeof(chip_id) - 1);
1445 chip_id[sizeof(chip_id) - 1] = '\0';
1446 for (i = 0; i < sizeof(aic_chip_ids) / sizeof(aic_chip_ids[0]); i++) {
1447 if (!strcmp(chip_id, aic_chip_ids[i].idstring)) {
1448 aic->chip_type = aic_chip_ids[i].type;
1453 porta = aic_inb(aic, PORTA);
1454 portb = aic_inb(aic, PORTB);
1456 aic->initiator = PORTA_ID(porta);
1457 if (PORTA_PARITY(porta))
1458 aic->flags |= AIC_PARITY_ENABLE;
1459 if (PORTB_DISC(portb))
1460 aic->flags |= AIC_DISC_ENABLE;
1461 if (PORTB_DMA(portb))
1462 aic->flags |= AIC_DMA_ENABLE;
1465 * We can do fast SCSI (10MHz clock rate) if bit 4 of portb
1466 * is set and we've got a 6360. The 6260 can only do standard
1469 if (aic->chip_type > AIC6260 || aic_inb(aic, REV)) {
1470 if (PORTB_FSYNC(portb))
1471 aic->flags |= AIC_FAST_ENABLE;
1472 aic->flags |= AIC_DWIO_ENABLE;
1475 if (aic->flags & AIC_FAST_ENABLE)
1476 aic->max_period = AIC_FAST_SYNC_PERIOD;
1478 aic->max_period = AIC_SYNC_PERIOD;
1479 aic->min_period = AIC_MIN_SYNC_PERIOD;
1481 for (i = 255; i >= 0; i--) {
1482 scb = &aic->scbs[i];
1484 callout_init_mtx(&scb->timer, &aic->lock, 0);
1485 aic_free_scb(aic, scb);
1488 for (i = 0; i < 8; i++) {
1489 if (i == aic->initiator)
1491 ti = &aic->tinfo[i];
1492 bzero(ti, sizeof(*ti));
1493 ti->flags = TINFO_TAG_ENB;
1494 if (aic->flags & AIC_DISC_ENABLE)
1495 ti->flags |= TINFO_DISC_ENB;
1496 ti->user.period = aic->max_period;
1497 ti->user.offset = AIC_SYNC_OFFSET;
1501 aic_outb(aic, DMACNTRL0, INTEN);
1505 aic_probe(struct aic_softc *aic)
1509 /* Remove aic6360 from possible powerdown mode */
1510 aic_outb(aic, DMACNTRL0, 0);
1513 aic_outb(aic, DMACNTRL1, 0); /* Reset stack pointer */
1514 for (i = 0; i < STSIZE; i++)
1515 aic_outb(aic, STACK, i);
1517 /* See if we can pull out the same sequence */
1518 aic_outb(aic, DMACNTRL1, 0);
1519 for (i = 0; i < STSIZE && aic_inb(aic, STACK) == i; i++)
1528 aic_attach(struct aic_softc *aic)
1530 struct cam_devq *devq;
1533 * Create the device queue for our SIM.
1535 devq = cam_simq_alloc(256);
1540 * Construct our SIM entry
1542 aic->sim = cam_sim_alloc(aic_action, aic_poll, "aic", aic,
1543 device_get_unit(aic->dev), &aic->lock, 2, 256, devq);
1544 if (aic->sim == NULL) {
1545 cam_simq_free(devq);
1549 mtx_lock(&aic->lock);
1550 if (xpt_bus_register(aic->sim, aic->dev, 0) != CAM_SUCCESS) {
1551 cam_sim_free(aic->sim, /*free_devq*/TRUE);
1552 mtx_unlock(&aic->lock);
1556 if (xpt_create_path(&aic->path, /*periph*/NULL,
1557 cam_sim_path(aic->sim), CAM_TARGET_WILDCARD,
1558 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
1559 xpt_bus_deregister(cam_sim_path(aic->sim));
1560 cam_sim_free(aic->sim, /*free_devq*/TRUE);
1561 mtx_unlock(&aic->lock);
1567 device_printf(aic->dev, "%s", aic_chip_names[aic->chip_type]);
1568 if (aic->flags & AIC_DMA_ENABLE)
1570 if (aic->flags & AIC_DISC_ENABLE)
1571 printf(", disconnection");
1572 if (aic->flags & AIC_PARITY_ENABLE)
1573 printf(", parity check");
1574 if (aic->flags & AIC_FAST_ENABLE)
1575 printf(", fast SCSI");
1577 mtx_unlock(&aic->lock);
1582 aic_detach(struct aic_softc *aic)
1584 struct aic_scb *scb;
1587 mtx_lock(&aic->lock);
1588 xpt_async(AC_LOST_DEVICE, aic->path, NULL);
1589 xpt_free_path(aic->path);
1590 xpt_bus_deregister(cam_sim_path(aic->sim));
1591 cam_sim_free(aic->sim, /*free_devq*/TRUE);
1592 mtx_unlock(&aic->lock);
1593 for (i = 255; i >= 0; i--) {
1594 scb = &aic->scbs[i];
1595 callout_drain(&scb->timer);