2 * CAM SCSI device driver for the Adaptec 174X SCSI Host adapter
4 * Copyright (c) 1998 Justin T. Gibbs
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice immediately at the beginning of the file, without modification,
12 * this list of conditions, and the following disclaimer.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/sys/dev/ahb/ahb.c,v 1.18.2.3 2001/03/05 13:08:55 obrien Exp $
29 * $DragonFly: src/sys/dev/disk/ahb/ahb.c,v 1.2 2003/06/17 04:28:21 dillon Exp $
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
39 #include <machine/bus_pio.h>
40 #include <machine/bus.h>
41 #include <machine/clock.h>
42 #include <machine/resource.h>
46 #include <cam/cam_ccb.h>
47 #include <cam/cam_sim.h>
48 #include <cam/cam_xpt_sim.h>
49 #include <cam/cam_debug.h>
51 #include <cam/scsi/scsi_message.h>
53 #include <dev/eisa/eisaconf.h>
55 #include <dev/ahb/ahbreg.h>
57 #define ccb_ecb_ptr spriv_ptr0
58 #define ccb_ahb_ptr spriv_ptr1
60 #define MIN(a, b) ((a) < (b) ? (a) : (b))
62 #define ahb_inb(ahb, port) \
63 bus_space_read_1((ahb)->tag, (ahb)->bsh, port)
65 #define ahb_inl(ahb, port) \
66 bus_space_read_4((ahb)->tag, (ahb)->bsh, port)
68 #define ahb_outb(ahb, port, value) \
69 bus_space_write_1((ahb)->tag, (ahb)->bsh, port, value)
71 #define ahb_outl(ahb, port, value) \
72 bus_space_write_4((ahb)->tag, (ahb)->bsh, port, value)
74 static const char *ahbmatch(eisa_id_t type);
75 static struct ahb_softc *ahballoc(u_long unit, struct resource *res);
76 static void ahbfree(struct ahb_softc *ahb);
77 static int ahbreset(struct ahb_softc *ahb);
78 static void ahbmapecbs(void *arg, bus_dma_segment_t *segs,
80 static int ahbxptattach(struct ahb_softc *ahb);
81 static void ahbhandleimmed(struct ahb_softc *ahb,
82 u_int32_t mbox, u_int intstat);
83 static void ahbcalcresid(struct ahb_softc *ahb,
84 struct ecb *ecb, union ccb *ccb);
85 static __inline void ahbdone(struct ahb_softc *ahb, u_int32_t mbox,
87 static void ahbintr(void *arg);
88 static bus_dmamap_callback_t ahbexecuteecb;
89 static void ahbaction(struct cam_sim *sim, union ccb *ccb);
90 static void ahbpoll(struct cam_sim *sim);
92 /* Our timeout handler */
93 static timeout_t ahbtimeout;
95 static __inline struct ecb* ahbecbget(struct ahb_softc *ahb);
96 static __inline void ahbecbfree(struct ahb_softc* ahb,
98 static __inline u_int32_t ahbecbvtop(struct ahb_softc *ahb,
100 static __inline struct ecb* ahbecbptov(struct ahb_softc *ahb,
102 static __inline u_int32_t ahbstatuspaddr(u_int32_t ecb_paddr);
103 static __inline u_int32_t ahbsensepaddr(u_int32_t ecb_paddr);
104 static __inline u_int32_t ahbsgpaddr(u_int32_t ecb_paddr);
105 static __inline void ahbqueuembox(struct ahb_softc *ahb,
109 static __inline struct ecb*
110 ahbecbget(struct ahb_softc *ahb)
116 if ((ecb = SLIST_FIRST(&ahb->free_ecbs)) != NULL)
117 SLIST_REMOVE_HEAD(&ahb->free_ecbs, links);
124 ahbecbfree(struct ahb_softc* ahb, struct ecb* ecb)
129 ecb->state = ECB_FREE;
130 SLIST_INSERT_HEAD(&ahb->free_ecbs, ecb, links);
134 static __inline u_int32_t
135 ahbecbvtop(struct ahb_softc *ahb, struct ecb *ecb)
137 return (ahb->ecb_physbase
138 + (u_int32_t)((caddr_t)ecb - (caddr_t)ahb->ecb_array));
141 static __inline struct ecb*
142 ahbecbptov(struct ahb_softc *ahb, u_int32_t ecb_addr)
144 return (ahb->ecb_array
145 + ((struct ecb*)ecb_addr - (struct ecb*)ahb->ecb_physbase));
148 static __inline u_int32_t
149 ahbstatuspaddr(u_int32_t ecb_paddr)
151 return (ecb_paddr + offsetof(struct ecb, status));
154 static __inline u_int32_t
155 ahbsensepaddr(u_int32_t ecb_paddr)
157 return (ecb_paddr + offsetof(struct ecb, sense));
160 static __inline u_int32_t
161 ahbsgpaddr(u_int32_t ecb_paddr)
163 return (ecb_paddr + offsetof(struct ecb, sg_list));
167 ahbqueuembox(struct ahb_softc *ahb, u_int32_t mboxval, u_int attn_code)
173 status = ahb_inb(ahb, HOSTSTAT);
174 if ((status & (HOSTSTAT_MBOX_EMPTY|HOSTSTAT_BUSY))
175 == HOSTSTAT_MBOX_EMPTY)
180 panic("ahb%ld: adapter not taking commands\n", ahb->unit);
182 ahb_outl(ahb, MBOXOUT0, mboxval);
183 ahb_outb(ahb, ATTN, attn_code);
187 ahbmatch(eisa_id_t type)
189 switch(type & 0xfffffe00) {
190 case EISA_DEVICE_ID_ADAPTEC_1740:
191 return ("Adaptec 174x SCSI host adapter");
200 ahbprobe(device_t dev)
208 desc = ahbmatch(eisa_get_id(dev));
211 device_set_desc(dev, desc);
213 iobase = (eisa_get_slot(dev) * EISA_SLOT_SIZE) +
214 AHB_EISA_SLOT_OFFSET;
216 eisa_add_iospace(dev, iobase, AHB_EISA_IOSIZE, RESVADDR_NONE);
218 intdef = inb(INTDEF + iobase);
219 switch (intdef & 0x7) {
239 printf("Adaptec 174X at slot %d: illegal "
240 "irq setting %d\n", eisa_get_slot(dev),
248 shared = (inb(INTDEF + iobase) & INTLEVEL) ?
249 EISA_TRIGGER_LEVEL : EISA_TRIGGER_EDGE;
251 eisa_add_intr(dev, irq, shared);
257 ahbattach(device_t dev)
260 * find unit and check we have that many defined
262 struct ahb_softc *ahb;
263 struct ecb* next_ecb;
264 struct resource *io = 0;
265 struct resource *irq = 0;
270 io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
271 0, ~0, 1, RF_ACTIVE);
273 device_printf(dev, "No I/O space?!\n");
277 if ((ahb = ahballoc(device_get_unit(dev), io)) == NULL) {
281 if (ahbreset(ahb) != 0)
285 irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
286 0, ~0, 1, RF_ACTIVE);
288 device_printf(dev, "Can't allocate interrupt\n");
293 * Create our DMA tags. These tags define the kinds of device
294 * accessible memory allocations and memory mappings we will
295 * need to perform during normal operation.
297 /* DMA tag for mapping buffers into device visible space. */
298 /* XXX Should be a child of the EISA bus dma tag */
299 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/1, /*boundary*/0,
300 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
301 /*highaddr*/BUS_SPACE_MAXADDR,
302 /*filter*/NULL, /*filterarg*/NULL,
303 /*maxsize*/MAXBSIZE, /*nsegments*/AHB_NSEG,
304 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
305 /*flags*/BUS_DMA_ALLOCNOW,
306 &ahb->buffer_dmat) != 0)
311 /* DMA tag for our ccb structures and ha inquiry data */
312 if (bus_dma_tag_create(/*parent*/NULL, /*alignment*/1, /*boundary*/0,
313 /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
314 /*highaddr*/BUS_SPACE_MAXADDR,
315 /*filter*/NULL, /*filterarg*/NULL,
316 (AHB_NECB * sizeof(struct ecb))
317 + sizeof(*ahb->ha_inq_data),
319 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
320 /*flags*/0, &ahb->ecb_dmat) != 0)
325 /* Allocation for our ccbs */
326 if (bus_dmamem_alloc(ahb->ecb_dmat, (void **)&ahb->ecb_array,
327 BUS_DMA_NOWAIT, &ahb->ecb_dmamap) != 0)
330 ahb->ha_inq_data = (struct ha_inquiry_data *)&ahb->ecb_array[AHB_NECB];
334 /* And permanently map them */
335 bus_dmamap_load(ahb->ecb_dmat, ahb->ecb_dmamap,
336 ahb->ecb_array, AHB_NSEG * sizeof(struct ecb),
337 ahbmapecbs, ahb, /*flags*/0);
341 /* Allocate the buffer dmamaps for each of our ECBs */
342 bzero(ahb->ecb_array, (AHB_NECB * sizeof(struct ecb))
343 + sizeof(*ahb->ha_inq_data));
344 next_ecb = ahb->ecb_array;
345 while (ahb->num_ecbs < AHB_NECB) {
348 if (bus_dmamap_create(ahb->buffer_dmat, /*flags*/0,
351 ecb_paddr = ahbecbvtop(ahb, next_ecb);
352 next_ecb->hecb.status_ptr = ahbstatuspaddr(ecb_paddr);
353 next_ecb->hecb.sense_ptr = ahbsensepaddr(ecb_paddr);
355 ahbecbfree(ahb, next_ecb);
359 if (ahb->num_ecbs == 0)
365 * Now that we know we own the resources we need, register
366 * our bus with the XPT.
368 if (ahbxptattach(ahb))
371 /* Enable our interrupt */
372 bus_setup_intr(dev, irq, INTR_TYPE_CAM, ahbintr, ahb, &ih);
377 * The board's IRQ line will not be left enabled
378 * if we can't intialize correctly, so its safe
379 * to release the irq.
384 bus_release_resource(dev, SYS_RES_IOPORT, 0, io);
386 bus_release_resource(dev, SYS_RES_IRQ, 0, irq);
390 static struct ahb_softc *
391 ahballoc(u_long unit, struct resource *res)
393 struct ahb_softc *ahb;
396 * Allocate a storage area for us
398 ahb = malloc(sizeof(struct ahb_softc), M_DEVBUF, M_NOWAIT | M_ZERO);
400 printf("ahb%ld: cannot malloc!\n", unit);
403 SLIST_INIT(&ahb->free_ecbs);
404 LIST_INIT(&ahb->pending_ccbs);
406 ahb->tag = rman_get_bustag(res);
407 ahb->bsh = rman_get_bushandle(res);
408 ahb->disc_permitted = ~0;
409 ahb->tags_permitted = ~0;
415 ahbfree(struct ahb_softc *ahb)
417 switch (ahb->init_level) {
420 bus_dmamap_unload(ahb->ecb_dmat, ahb->ecb_dmamap);
422 bus_dmamem_free(ahb->ecb_dmat, ahb->ecb_array,
424 bus_dmamap_destroy(ahb->ecb_dmat, ahb->ecb_dmamap);
426 bus_dma_tag_destroy(ahb->ecb_dmat);
428 bus_dma_tag_destroy(ahb->buffer_dmat);
435 * reset board, If it doesn't respond, return failure
438 ahbreset(struct ahb_softc *ahb)
440 int wait = 1000; /* 1 sec enough? */
443 if ((ahb_inb(ahb, PORTADDR) & PORTADDR_ENHANCED) == 0) {
444 printf("ahb_reset: Controller not in enhanced mode\n");
448 ahb_outb(ahb, CONTROL, CNTRL_HARD_RST);
450 ahb_outb(ahb, CONTROL, 0);
453 if ((ahb_inb(ahb, HOSTSTAT) & HOSTSTAT_BUSY) == 0)
458 printf("ahbreset: No answer from aha1742 board\n");
461 if ((test = ahb_inb(ahb, MBOXIN0)) != 0) {
462 printf("ahb_reset: self test failed, val = 0x%x\n", test);
465 while (ahb_inb(ahb, HOSTSTAT) & HOSTSTAT_INTPEND) {
466 ahb_outb(ahb, CONTROL, CNTRL_CLRINT);
473 ahbmapecbs(void *arg, bus_dma_segment_t *segs, int nseg, int error)
475 struct ahb_softc* ahb;
477 ahb = (struct ahb_softc*)arg;
478 ahb->ecb_physbase = segs->ds_addr;
480 * Space for adapter inquiry information is on the
481 * tail of the ecb array.
483 ahb->ha_inq_physbase = ahbecbvtop(ahb, &ahb->ecb_array[AHB_NECB]);
487 ahbxptattach(struct ahb_softc *ahb)
489 struct cam_devq *devq;
493 /* Remeber who are we on the scsi bus */
494 ahb->scsi_id = ahb_inb(ahb, SCSIDEF) & HSCSIID;
496 /* Use extended translation?? */
497 ahb->extended_trans = ahb_inb(ahb, RESV1) & EXTENDED_TRANS;
499 /* Fetch adapter inquiry data */
500 ecb = ahbecbget(ahb); /* Always succeeds - no outstanding commands */
501 ecb->hecb.opcode = ECBOP_READ_HA_INQDATA;
502 ecb->hecb.flag_word1 = FW1_SUPPRESS_URUN_ERR|FW1_ERR_STATUS_BLK_ONLY;
503 ecb->hecb.data_ptr = ahb->ha_inq_physbase;
504 ecb->hecb.data_len = sizeof(struct ha_inquiry_data);
505 ecb->hecb.sense_ptr = 0;
506 ecb->state = ECB_ACTIVE;
508 /* Tell the adapter about this command */
509 ahbqueuembox(ahb, ahbecbvtop(ahb, ecb),
510 ATTN_STARTECB|ahb->scsi_id);
512 /* Poll for interrupt completion */
513 for (i = 1000; ecb->state != ECB_FREE && i != 0; i--) {
518 ahb->num_ecbs = MIN(ahb->num_ecbs,
519 ahb->ha_inq_data->scsi_data.reserved[1]);
520 printf("ahb%ld: %.8s %s SCSI Adapter, FW Rev. %.4s, ID=%d, %d ECBs\n",
521 ahb->unit, ahb->ha_inq_data->scsi_data.product,
522 (ahb->ha_inq_data->scsi_data.flags & 0x4) ? "Differential"
524 ahb->ha_inq_data->scsi_data.revision,
525 ahb->scsi_id, ahb->num_ecbs);
527 /* Restore sense paddr for future CCB clients */
528 ecb->hecb.sense_ptr = ahbsensepaddr(ahbecbvtop(ahb, ecb));
530 ahbecbfree(ahb, ecb);
533 * Create the device queue for our SIM.
535 devq = cam_simq_alloc(ahb->num_ecbs);
540 * Construct our SIM entry
542 ahb->sim = cam_sim_alloc(ahbaction, ahbpoll, "ahb", ahb, ahb->unit,
543 2, ahb->num_ecbs, devq);
544 if (ahb->sim == NULL) {
549 if (xpt_bus_register(ahb->sim, 0) != CAM_SUCCESS) {
550 cam_sim_free(ahb->sim, /*free_devq*/TRUE);
554 if (xpt_create_path(&ahb->path, /*periph*/NULL,
555 cam_sim_path(ahb->sim), CAM_TARGET_WILDCARD,
556 CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
557 xpt_bus_deregister(cam_sim_path(ahb->sim));
558 cam_sim_free(ahb->sim, /*free_devq*/TRUE);
563 * Allow the board to generate interrupts.
565 ahb_outb(ahb, INTDEF, ahb_inb(ahb, INTDEF) | INTEN);
571 ahbhandleimmed(struct ahb_softc *ahb, u_int32_t mbox, u_int intstat)
573 struct ccb_hdr *ccb_h;
576 if (ahb->immed_cmd == 0) {
577 printf("ahb%ld: Immediate Command complete with no "
578 " pending command\n", ahb->unit);
582 target_id = intstat & INTSTAT_TARGET_MASK;
584 ccb_h = LIST_FIRST(&ahb->pending_ccbs);
585 while (ccb_h != NULL) {
586 struct ecb *pending_ecb;
589 pending_ecb = (struct ecb *)ccb_h->ccb_ecb_ptr;
590 ccb = pending_ecb->ccb;
591 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
592 if (ccb->ccb_h.target_id == target_id
593 || target_id == ahb->scsi_id) {
594 untimeout(ahbtimeout, pending_ecb,
595 ccb->ccb_h.timeout_ch);
596 LIST_REMOVE(&ccb->ccb_h, sim_links.le);
597 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)
598 bus_dmamap_unload(ahb->buffer_dmat,
599 pending_ecb->dmamap);
600 if (pending_ecb == ahb->immed_ecb)
602 CAM_CMD_TIMEOUT|CAM_RELEASE_SIMQ;
603 else if (target_id == ahb->scsi_id)
604 ccb->ccb_h.status = CAM_SCSI_BUS_RESET;
606 ccb->ccb_h.status = CAM_BDR_SENT;
607 ahbecbfree(ahb, pending_ecb);
609 } else if (ahb->immed_ecb != NULL) {
610 /* Re-instate timeout */
611 ccb->ccb_h.timeout_ch =
612 timeout(ahbtimeout, (caddr_t)pending_ecb,
613 (ccb->ccb_h.timeout * hz) / 1000);
617 if (ahb->immed_ecb != NULL) {
618 ahb->immed_ecb = NULL;
619 printf("ahb%ld: No longer in timeout\n", ahb->unit);
620 } else if (target_id == ahb->scsi_id)
621 printf("ahb%ld: SCSI Bus Reset Delivered\n", ahb->unit);
623 printf("ahb%ld: Bus Device Reset Delibered to target %d\n",
624 ahb->unit, target_id);
630 ahbcalcresid(struct ahb_softc *ahb, struct ecb *ecb, union ccb *ccb)
632 if (ecb->status.data_overrun != 0) {
634 * Overrun Condition. The hardware doesn't
635 * provide a meaningful byte count in this case
636 * (the residual is always 0). Tell the XPT
637 * layer about the error.
639 ccb->ccb_h.status = CAM_DATA_RUN_ERR;
641 ccb->csio.resid = ecb->status.resid_count;
643 if ((ecb->hecb.flag_word1 & FW1_SG_ECB) != 0) {
645 * For S/G transfers, the adapter provides a pointer
646 * to the address in the last S/G element used and a
647 * residual for that element. So, we need to sum up
648 * the elements that follow it in order to get a real
649 * residual number. If we have an overrun, the residual
650 * reported will be 0 and we already know that all S/G
651 * segments have been exhausted, so we can skip this
657 num_sg = ecb->hecb.data_len / sizeof(ahb_sg_t);
659 /* Find the S/G the adapter was working on */
660 for (sg = ecb->sg_list;
661 num_sg != 0 && sg->addr != ecb->status.resid_addr;
670 for (; num_sg != 0; num_sg--, sg++)
671 ccb->csio.resid += sg->len;
673 /* Underruns are not errors */
674 ccb->ccb_h.status = CAM_REQ_CMP;
679 ahbprocesserror(struct ahb_softc *ahb, struct ecb *ecb, union ccb *ccb)
681 struct hardware_ecb *hecb;
682 struct ecb_status *status;
685 status = &ecb->status;
686 switch (status->ha_status) {
688 ccb->csio.scsi_status = status->scsi_status;
689 if (status->scsi_status != 0) {
690 ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR;
691 if (status->sense_stored) {
692 ccb->ccb_h.status |= CAM_AUTOSNS_VALID;
693 ccb->csio.sense_resid =
694 ccb->csio.sense_len - status->sense_len;
695 bcopy(&ecb->sense, &ccb->csio.sense_data,
700 case HS_TARGET_NOT_ASSIGNED:
701 ccb->ccb_h.status = CAM_PATH_INVALID;
704 ccb->ccb_h.status = CAM_SEL_TIMEOUT;
706 case HS_DATA_RUN_ERR:
707 ahbcalcresid(ahb, ecb, ccb);
709 case HS_UNEXPECTED_BUSFREE:
710 ccb->ccb_h.status = CAM_UNEXP_BUSFREE;
712 case HS_INVALID_PHASE:
713 ccb->ccb_h.status = CAM_SEQUENCE_FAIL;
715 case HS_REQUEST_SENSE_FAILED:
716 ccb->ccb_h.status = CAM_AUTOSENSE_FAIL;
718 case HS_TAG_MSG_REJECTED:
720 struct ccb_trans_settings neg;
722 xpt_print_path(ccb->ccb_h.path);
723 printf("refuses tagged commands. Performing "
726 neg.valid = CCB_TRANS_TQ_VALID;
727 xpt_setup_ccb(&neg.ccb_h, ccb->ccb_h.path, /*priority*/1);
728 xpt_async(AC_TRANSFER_NEG, ccb->ccb_h.path, &neg);
729 ahb->tags_permitted &= ~(0x01 << ccb->ccb_h.target_id);
730 ccb->ccb_h.status = CAM_MSG_REJECT_REC;
733 case HS_FIRMWARE_LOAD_REQ:
734 case HS_HARDWARE_ERR:
736 * Tell the system that the Adapter
737 * is no longer functional.
739 ccb->ccb_h.status = CAM_NO_HBA;
741 case HS_CMD_ABORTED_HOST:
742 case HS_CMD_ABORTED_ADAPTER:
743 case HS_ATN_TARGET_FAILED:
744 case HS_SCSI_RESET_ADAPTER:
745 case HS_SCSI_RESET_INCOMING:
746 ccb->ccb_h.status = CAM_SCSI_BUS_RESET;
748 case HS_INVALID_ECB_PARAM:
749 printf("ahb%ld: opcode 0x%02x, flag_word1 0x%02x, flag_word2 0x%02x\n",
750 ahb->unit, hecb->opcode, hecb->flag_word1, hecb->flag_word2);
751 ccb->ccb_h.status = CAM_SCSI_BUS_RESET;
753 case HS_DUP_TCB_RECEIVED:
754 case HS_INVALID_OPCODE:
755 case HS_INVALID_CMD_LINK:
756 case HS_PROGRAM_CKSUM_ERROR:
757 panic("ahb%ld: Can't happen host status %x occurred",
758 ahb->unit, status->ha_status);
761 if (ccb->ccb_h.status != CAM_REQ_CMP) {
762 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
763 ccb->ccb_h.status |= CAM_DEV_QFRZN;
768 ahbdone(struct ahb_softc *ahb, u_int32_t mbox, u_int intstat)
773 ecb = ahbecbptov(ahb, mbox);
775 if ((ecb->state & ECB_ACTIVE) == 0)
776 panic("ecb not active");
781 untimeout(ahbtimeout, ecb, ccb->ccb_h.timeout_ch);
782 LIST_REMOVE(&ccb->ccb_h, sim_links.le);
784 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
787 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN)
788 op = BUS_DMASYNC_POSTREAD;
790 op = BUS_DMASYNC_POSTWRITE;
791 bus_dmamap_sync(ahb->buffer_dmat, ecb->dmamap, op);
792 bus_dmamap_unload(ahb->buffer_dmat, ecb->dmamap);
795 if ((intstat & INTSTAT_MASK) == INTSTAT_ECB_OK) {
796 ccb->ccb_h.status = CAM_REQ_CMP;
799 ahbprocesserror(ahb, ecb, ccb);
801 ahbecbfree(ahb, ecb);
804 /* Non CCB Command */
805 if ((intstat & INTSTAT_MASK) != INTSTAT_ECB_OK) {
806 printf("ahb%ld: Command 0%x Failed %x:%x:%x\n",
807 ahb->unit, ecb->hecb.opcode,
808 *((u_int16_t*)&ecb->status),
809 ecb->status.ha_status, ecb->status.resid_count);
811 /* Client owns this ECB and will release it. */
816 * Catch an interrupt from the adaptor
821 struct ahb_softc *ahb;
825 ahb = (struct ahb_softc *)arg;
827 while (ahb_inb(ahb, HOSTSTAT) & HOSTSTAT_INTPEND) {
829 * Fetch information about this interrupt.
831 intstat = ahb_inb(ahb, INTSTAT);
832 mbox = ahb_inl(ahb, MBOXIN0);
835 * Reset interrupt latch.
837 ahb_outb(ahb, CONTROL, CNTRL_CLRINT);
840 * Process the completed operation
842 switch (intstat & INTSTAT_MASK) {
844 case INTSTAT_ECB_CMPWRETRY:
845 case INTSTAT_ECB_CMPWERR:
846 ahbdone(ahb, mbox, intstat);
848 case INTSTAT_AEN_OCCURED:
849 if ((intstat & INTSTAT_TARGET_MASK) == ahb->scsi_id) {
851 xpt_print_path(ahb->path);
853 case HS_SCSI_RESET_ADAPTER:
854 printf("Host Adapter Initiated "
855 "Bus Reset occurred\n");
857 case HS_SCSI_RESET_INCOMING:
858 printf("Bus Reset Initiated "
859 "by another device occurred\n");
863 xpt_async(AC_BUS_RESET, ahb->path, NULL);
866 printf("Unsupported initiator selection AEN occured\n");
868 case INTSTAT_IMMED_OK:
869 case INTSTAT_IMMED_ERR:
870 ahbhandleimmed(ahb, mbox, intstat);
873 panic("Unrecoverable hardware Error Occurred\n");
879 ahbexecuteecb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
883 struct ahb_softc *ahb;
887 ecb = (struct ecb *)arg;
889 ahb = (struct ahb_softc *)ccb->ccb_h.ccb_ahb_ptr;
893 printf("ahb%ld: Unexepected error 0x%x returned from "
894 "bus_dmamap_load\n", ahb->unit, error);
895 if (ccb->ccb_h.status == CAM_REQ_INPROG) {
896 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
897 ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN;
899 ahbecbfree(ahb, ecb);
904 ecb_paddr = ahbecbvtop(ahb, ecb);
908 bus_dma_segment_t *end_seg;
911 end_seg = dm_segs + nseg;
913 /* Copy the segments into our SG list */
915 while (dm_segs < end_seg) {
916 sg->addr = dm_segs->ds_addr;
917 sg->len = dm_segs->ds_len;
923 ecb->hecb.flag_word1 |= FW1_SG_ECB;
924 ecb->hecb.data_ptr = ahbsgpaddr(ecb_paddr);
925 ecb->hecb.data_len = sizeof(ahb_sg_t) * nseg;
927 ecb->hecb.data_ptr = ecb->sg_list->addr;
928 ecb->hecb.data_len = ecb->sg_list->len;
931 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
932 /* ecb->hecb.flag_word2 |= FW2_DATA_DIR_IN; */
933 op = BUS_DMASYNC_PREREAD;
935 op = BUS_DMASYNC_PREWRITE;
937 /* ecb->hecb.flag_word2 |= FW2_CHECK_DATA_DIR; */
939 bus_dmamap_sync(ahb->buffer_dmat, ecb->dmamap, op);
942 ecb->hecb.data_ptr = 0;
943 ecb->hecb.data_len = 0;
949 * Last time we need to check if this CCB needs to
952 if (ccb->ccb_h.status != CAM_REQ_INPROG) {
954 bus_dmamap_unload(ahb->buffer_dmat, ecb->dmamap);
955 ahbecbfree(ahb, ecb);
961 ecb->state = ECB_ACTIVE;
962 ccb->ccb_h.status |= CAM_SIM_QUEUED;
963 LIST_INSERT_HEAD(&ahb->pending_ccbs, &ccb->ccb_h, sim_links.le);
965 /* Tell the adapter about this command */
966 ahbqueuembox(ahb, ecb_paddr, ATTN_STARTECB|ccb->ccb_h.target_id);
968 ccb->ccb_h.timeout_ch = timeout(ahbtimeout, (caddr_t)ecb,
969 (ccb->ccb_h.timeout * hz) / 1000);
974 ahbaction(struct cam_sim *sim, union ccb *ccb)
976 struct ahb_softc *ahb;
978 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("ahbaction\n"));
980 ahb = (struct ahb_softc *)cam_sim_softc(sim);
982 switch (ccb->ccb_h.func_code) {
983 /* Common cases first */
984 case XPT_SCSI_IO: /* Execute the requested I/O operation */
987 struct hardware_ecb *hecb;
992 if ((ecb = ahbecbget(ahb)) == NULL) {
993 /* Should never occur */
994 panic("Failed to get an ecb");
998 * So we can find the ECB when an abort is requested
1001 ccb->ccb_h.ccb_ecb_ptr = ecb;
1002 ccb->ccb_h.ccb_ahb_ptr = ahb;
1005 * Put all the arguments for the xfer in the ecb
1008 hecb->opcode = ECBOP_INITIATOR_SCSI_CMD;
1009 hecb->flag_word1 = FW1_AUTO_REQUEST_SENSE
1010 | FW1_ERR_STATUS_BLK_ONLY;
1011 hecb->flag_word2 = ccb->ccb_h.target_lun
1012 | FW2_NO_RETRY_ON_BUSY;
1013 if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) {
1014 hecb->flag_word2 |= FW2_TAG_ENB
1015 | ((ccb->csio.tag_action & 0x3)
1016 << FW2_TAG_TYPE_SHIFT);
1018 if ((ccb->ccb_h.flags & CAM_DIS_DISCONNECT) != 0)
1019 hecb->flag_word2 |= FW2_DISABLE_DISC;
1020 hecb->sense_len = ccb->csio.sense_len;
1021 hecb->cdb_len = ccb->csio.cdb_len;
1022 if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
1023 if ((ccb->ccb_h.flags & CAM_CDB_PHYS) == 0) {
1024 bcopy(ccb->csio.cdb_io.cdb_ptr,
1025 hecb->cdb, hecb->cdb_len);
1027 /* I guess I could map it in... */
1028 ccb->ccb_h.status = CAM_REQ_INVALID;
1029 ahbecbfree(ahb, ecb);
1034 bcopy(ccb->csio.cdb_io.cdb_bytes,
1035 hecb->cdb, hecb->cdb_len);
1039 * If we have any data to send with this command,
1040 * map it into bus space.
1042 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
1043 if ((ccb->ccb_h.flags & CAM_SCATTER_VALID) == 0) {
1045 * We've been given a pointer
1046 * to a single buffer.
1048 if ((ccb->ccb_h.flags & CAM_DATA_PHYS)==0) {
1053 error = bus_dmamap_load(
1057 ccb->csio.dxfer_len,
1060 if (error == EINPROGRESS) {
1062 * So as to maintain ordering,
1063 * freeze the controller queue
1064 * until our mapping is
1067 xpt_freeze_simq(ahb->sim, 1);
1068 ccb->ccb_h.status |=
1073 struct bus_dma_segment seg;
1075 /* Pointer to physical buffer */
1077 (bus_addr_t)ccb->csio.data_ptr;
1078 seg.ds_len = ccb->csio.dxfer_len;
1079 ahbexecuteecb(ecb, &seg, 1, 0);
1082 struct bus_dma_segment *segs;
1084 if ((ccb->ccb_h.flags & CAM_DATA_PHYS) != 0)
1085 panic("ahbaction - Physical segment "
1086 "pointers unsupported");
1088 if ((ccb->ccb_h.flags & CAM_SG_LIST_PHYS) == 0)
1089 panic("btaction - Virtual segment "
1090 "addresses unsupported");
1092 /* Just use the segments provided */
1093 segs = (struct bus_dma_segment *)
1095 ahbexecuteecb(ecb, segs, ccb->csio.sglist_cnt,
1099 ahbexecuteecb(ecb, NULL, 0, 0);
1103 case XPT_EN_LUN: /* Enable LUN as a target */
1104 case XPT_TARGET_IO: /* Execute target I/O request */
1105 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */
1106 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/
1107 case XPT_ABORT: /* Abort the specified CCB */
1109 ccb->ccb_h.status = CAM_REQ_INVALID;
1112 case XPT_SET_TRAN_SETTINGS:
1114 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
1118 case XPT_GET_TRAN_SETTINGS:
1119 /* Get default/user set transfer settings for the target */
1121 struct ccb_trans_settings *cts;
1125 target_mask = 0x01 << ccb->ccb_h.target_id;
1126 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) {
1128 if ((ahb->disc_permitted & target_mask) != 0)
1129 cts->flags |= CCB_TRANS_DISC_ENB;
1130 if ((ahb->tags_permitted & target_mask) != 0)
1131 cts->flags |= CCB_TRANS_TAG_ENB;
1132 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
1133 cts->sync_period = 25; /* 10MHz */
1135 if (cts->sync_period != 0)
1136 cts->sync_offset = 15;
1138 cts->valid = CCB_TRANS_SYNC_RATE_VALID
1139 | CCB_TRANS_SYNC_OFFSET_VALID
1140 | CCB_TRANS_BUS_WIDTH_VALID
1141 | CCB_TRANS_DISC_VALID
1142 | CCB_TRANS_TQ_VALID;
1143 ccb->ccb_h.status = CAM_REQ_CMP;
1145 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
1150 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */
1156 ahb->immed_cmd = IMMED_RESET;
1157 ahbqueuembox(ahb, IMMED_RESET, ATTN_IMMED|ccb->ccb_h.target_id);
1158 /* Poll for interrupt completion */
1159 for (i = 1000; ahb->immed_cmd != 0 && i != 0; i--) {
1161 ahbintr(cam_sim_softc(sim));
1166 case XPT_CALC_GEOMETRY:
1168 struct ccb_calc_geometry *ccg;
1170 u_int32_t secs_per_cylinder;
1173 size_mb = ccg->volume_size
1174 / ((1024L * 1024L) / ccg->block_size);
1176 if (size_mb > 1024 && (ahb->extended_trans != 0)) {
1178 ccg->secs_per_track = 63;
1181 ccg->secs_per_track = 32;
1183 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
1184 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
1185 ccb->ccb_h.status = CAM_REQ_CMP;
1189 case XPT_RESET_BUS: /* Reset the specified SCSI bus */
1193 ahb->immed_cmd = IMMED_RESET;
1194 ahbqueuembox(ahb, IMMED_RESET, ATTN_IMMED|ahb->scsi_id);
1195 /* Poll for interrupt completion */
1196 for (i = 1000; ahb->immed_cmd != 0 && i != 0; i--)
1198 ccb->ccb_h.status = CAM_REQ_CMP;
1202 case XPT_TERM_IO: /* Terminate the I/O process */
1204 ccb->ccb_h.status = CAM_REQ_INVALID;
1207 case XPT_PATH_INQ: /* Path routing inquiry */
1209 struct ccb_pathinq *cpi = &ccb->cpi;
1211 cpi->version_num = 1; /* XXX??? */
1212 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE;
1213 cpi->target_sprt = 0;
1215 cpi->hba_eng_cnt = 0;
1216 cpi->max_target = 7;
1218 cpi->initiator_id = ahb->scsi_id;
1219 cpi->bus_id = cam_sim_bus(sim);
1220 cpi->base_transfer_speed = 3300;
1221 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
1222 strncpy(cpi->hba_vid, "Adaptec", HBA_IDLEN);
1223 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
1224 cpi->unit_number = cam_sim_unit(sim);
1225 cpi->ccb_h.status = CAM_REQ_CMP;
1231 case XPT_IMMED_NOTIFY: /* Notify Host Target driver of event */
1232 case XPT_NOTIFY_ACK: /* Acknowledgement of event */
1235 ccb->ccb_h.status = CAM_REQ_INVALID;
1242 ahbpoll(struct cam_sim *sim)
1244 ahbintr(cam_sim_softc(sim));
1248 ahbtimeout(void *arg)
1252 struct ahb_softc *ahb;
1255 ecb = (struct ecb *)arg;
1257 ahb = (struct ahb_softc *)ccb->ccb_h.ccb_ahb_ptr;
1258 xpt_print_path(ccb->ccb_h.path);
1259 printf("ECB %p - timed out\n", (void *)ecb);
1263 if ((ecb->state & ECB_ACTIVE) == 0) {
1264 xpt_print_path(ccb->ccb_h.path);
1265 printf("ECB %p - timed out ECB already completed\n",
1271 * In order to simplify the recovery process, we ask the XPT
1272 * layer to halt the queue of new transactions and we traverse
1273 * the list of pending CCBs and remove their timeouts. This
1274 * means that the driver attempts to clear only one error
1275 * condition at a time. In general, timeouts that occur
1276 * close together are related anyway, so there is no benefit
1277 * in attempting to handle errors in parrallel. Timeouts will
1278 * be reinstated when the recovery process ends.
1280 if ((ecb->state & ECB_DEVICE_RESET) == 0) {
1281 struct ccb_hdr *ccb_h;
1283 if ((ecb->state & ECB_RELEASE_SIMQ) == 0) {
1284 xpt_freeze_simq(ahb->sim, /*count*/1);
1285 ecb->state |= ECB_RELEASE_SIMQ;
1288 ccb_h = LIST_FIRST(&ahb->pending_ccbs);
1289 while (ccb_h != NULL) {
1290 struct ecb *pending_ecb;
1292 pending_ecb = (struct ecb *)ccb_h->ccb_ecb_ptr;
1293 untimeout(ahbtimeout, pending_ecb, ccb_h->timeout_ch);
1294 ccb_h = LIST_NEXT(ccb_h, sim_links.le);
1297 /* Store for our interrupt handler */
1298 ahb->immed_ecb = ecb;
1301 * Send a Bus Device Reset message:
1302 * The target that is holding up the bus may not
1303 * be the same as the one that triggered this timeout
1304 * (different commands have different timeout lengths),
1305 * but we have no way of determining this from our
1306 * timeout handler. Our strategy here is to queue a
1307 * BDR message to the target of the timed out command.
1308 * If this fails, we'll get another timeout 2 seconds
1309 * later which will attempt a bus reset.
1311 xpt_print_path(ccb->ccb_h.path);
1312 printf("Queuing BDR\n");
1313 ecb->state |= ECB_DEVICE_RESET;
1314 ccb->ccb_h.timeout_ch =
1315 timeout(ahbtimeout, (caddr_t)ecb, 2 * hz);
1317 ahb->immed_cmd = IMMED_RESET;
1318 ahbqueuembox(ahb, IMMED_RESET, ATTN_IMMED|ccb->ccb_h.target_id);
1319 } else if ((ecb->state & ECB_SCSIBUS_RESET) != 0) {
1321 * Try a SCSI bus reset. We do this only if we
1322 * have already attempted to clear the condition with a BDR.
1324 xpt_print_path(ccb->ccb_h.path);
1325 printf("Attempting SCSI Bus reset\n");
1326 ecb->state |= ECB_SCSIBUS_RESET;
1327 ccb->ccb_h.timeout_ch =
1328 timeout(ahbtimeout, (caddr_t)ecb, 2 * hz);
1329 ahb->immed_cmd = IMMED_RESET;
1330 ahbqueuembox(ahb, IMMED_RESET, ATTN_IMMED|ahb->scsi_id);
1332 /* Bring out the hammer... */
1335 /* Simulate the reset complete interrupt */
1336 ahbhandleimmed(ahb, 0, ahb->scsi_id|INTSTAT_IMMED_OK);
1342 static device_method_t ahb_eisa_methods[] = {
1343 /* Device interface */
1344 DEVMETHOD(device_probe, ahbprobe),
1345 DEVMETHOD(device_attach, ahbattach),
1350 static driver_t ahb_eisa_driver = {
1356 static devclass_t ahb_devclass;
1358 DRIVER_MODULE(ahb, eisa, ahb_eisa_driver, ahb_devclass, 0, 0);