/* $OpenBSD: osiop.c,v 1.33 2008/05/27 21:08:48 kettenis Exp $ */ /* $NetBSD: osiop.c,v 1.9 2002/04/05 18:27:54 bouyer Exp $ */ /* * Copyright (c) 2001 Izumi Tsutsui. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1994 Michael L. Hitch * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Van Jacobson of Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)siop.c 7.5 (Berkeley) 5/4/91 */ /* * MI NCR53C710 scsi adaptor driver; based on arch/amiga/dev/siop.c: * NetBSD: siop.c,v 1.43 1999/09/30 22:59:53 thorpej Exp * * bus_space/bus_dma'fied by Izumi Tsutsui */ #include #include #include #include #include #include #include #include #include #include #include #include #include /* 53C710 script */ #include void osiop_attach(struct osiop_softc *); void osiop_minphys(struct buf *); int osiop_scsicmd(struct scsi_xfer *xs); void osiop_poll(struct osiop_softc *, struct osiop_acb *); void osiop_sched(struct osiop_softc *); void osiop_scsidone(struct osiop_acb *, int); void osiop_abort(struct osiop_softc *, const char *); void osiop_init(struct osiop_softc *); void osiop_reset(struct osiop_softc *); void osiop_resetbus(struct osiop_softc *); void osiop_start(struct osiop_softc *); int osiop_checkintr(struct osiop_softc *, u_int8_t, u_int8_t, u_int8_t, int *); void osiop_select(struct osiop_softc *); void osiop_update_xfer_mode(struct osiop_softc *, int); void scsi_period_to_osiop(struct osiop_softc *, int); void osiop_timeout(void *); int osiop_reset_delay = 250; /* delay after reset, in milliseconds */ /* #define OSIOP_DEBUG */ #ifdef OSIOP_DEBUG #define DEBUG_DMA 0x0001 #define DEBUG_INT 0x0002 #define DEBUG_PHASE 0x0004 #define DEBUG_DISC 0x0008 #define DEBUG_CMD 0x0010 #define DEBUG_SYNC 0x0020 #define DEBUG_SCHED 0x0040 #define DEBUG_ALL 0xffff int osiop_debug = 0; /*DEBUG_ALL;*/ int osiopstarts = 0; int osiopints = 0; int osiopphmm = 0; int osiop_trix = 0; #define OSIOP_TRACE_SIZE 128 #define OSIOP_TRACE(a,b,c,d) do { \ osiop_trbuf[osiop_trix + 0] = (a); \ osiop_trbuf[osiop_trix + 1] = (b); \ osiop_trbuf[osiop_trix + 2] = (c); \ osiop_trbuf[osiop_trix + 3] = (d); \ osiop_trix = (osiop_trix + 4) & (OSIOP_TRACE_SIZE - 1); \ } while (0) u_int8_t osiop_trbuf[OSIOP_TRACE_SIZE]; void osiop_dump_trace(void); void osiop_dump_acb(struct osiop_acb *); void osiop_dump(struct osiop_softc *); #else #define OSIOP_TRACE(a,b,c,d) #endif #ifdef OSIOP_DEBUG /* * sync period transfer lookup - only valid for 66MHz clock */ static struct { u_int8_t p; /* period from sync request message */ u_int8_t r; /* siop_period << 4 | sbcl */ } sync_tab[] = { { 60/4, 0<<4 | 1}, { 76/4, 1<<4 | 1}, { 92/4, 2<<4 | 1}, { 92/4, 0<<4 | 2}, {108/4, 3<<4 | 1}, {116/4, 1<<4 | 2}, {120/4, 4<<4 | 1}, {120/4, 0<<4 | 3}, {136/4, 5<<4 | 1}, {140/4, 2<<4 | 2}, {152/4, 6<<4 | 1}, {152/4, 1<<4 | 3}, {164/4, 3<<4 | 2}, {168/4, 7<<4 | 1}, {180/4, 2<<4 | 3}, {184/4, 4<<4 | 2}, {208/4, 5<<4 | 2}, {212/4, 3<<4 | 3}, {232/4, 6<<4 | 2}, {240/4, 4<<4 | 3}, {256/4, 7<<4 | 2}, {272/4, 5<<4 | 3}, {300/4, 6<<4 | 3}, {332/4, 7<<4 | 3} }; #endif struct cfdriver osiop_cd = { NULL, "osiop", DV_DULL }; struct scsi_adapter osiop_adapter = { osiop_scsicmd, osiop_minphys, NULL, NULL, }; struct scsi_device osiop_dev = { NULL, NULL, NULL, NULL, }; void osiop_attach(sc) struct osiop_softc *sc; { struct scsibus_attach_args saa; struct osiop_acb *acb; bus_dma_segment_t seg; int nseg; int i, err; /* * Allocate and map DMA-safe memory for the script. */ err = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1, &nseg, BUS_DMA_NOWAIT); if (err) { printf(": failed to allocate script memory, err=%d\n", err); return; } err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, PAGE_SIZE, (caddr_t *)&sc->sc_script, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); if (err) { printf(": failed to map script memory, err=%d\n", err); return; } err = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &sc->sc_scrdma); if (err) { printf(": failed to create script map, err=%d\n", err); return; } err = bus_dmamap_load_raw(sc->sc_dmat, sc->sc_scrdma, &seg, nseg, PAGE_SIZE, BUS_DMA_NOWAIT); if (err) { printf(": failed to load script map, err=%d\n", err); return; } bzero(sc->sc_script, PAGE_SIZE); /* * Copy and sync script */ memcpy(sc->sc_script, osiop_script, sizeof(osiop_script)); bus_dmamap_sync(sc->sc_dmat, sc->sc_scrdma, 0, sizeof(osiop_script), BUS_DMASYNC_PREWRITE); /* * Allocate and map DMA-safe memory for the script data structure. */ err = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct osiop_ds) * OSIOP_NACB, PAGE_SIZE, 0, &seg, 1, &nseg, BUS_DMA_NOWAIT); if (err) { printf(": failed to allocate ds memory, err=%d\n", err); return; } err = bus_dmamem_map(sc->sc_dmat, &seg, nseg, sizeof(struct osiop_ds) * OSIOP_NACB, (caddr_t *)&sc->sc_ds, BUS_DMA_NOWAIT | BUS_DMA_COHERENT); if (err) { printf(": failed to map ds memory, err=%d\n", err); return; } err = bus_dmamap_create(sc->sc_dmat, sizeof(struct osiop_ds) * OSIOP_NACB, 1, sizeof(struct osiop_ds) * OSIOP_NACB, 0, BUS_DMA_NOWAIT, &sc->sc_dsdma); if (err) { printf(": failed to create ds map, err=%d\n", err); return; } err = bus_dmamap_load_raw(sc->sc_dmat, sc->sc_dsdma, &seg, nseg, sizeof(struct osiop_ds) * OSIOP_NACB, BUS_DMA_NOWAIT); if (err) { printf(": failed to load ds map, err=%d\n", err); return; } bzero(sc->sc_ds, sizeof(struct osiop_ds) * OSIOP_NACB); /* * Allocate (malloc) memory for acb's. */ acb = malloc(sizeof(*acb) * OSIOP_NACB, M_DEVBUF, M_NOWAIT | M_ZERO); if (acb == NULL) { printf(": can't allocate memory for acb\n"); return; } sc->sc_acb = acb; sc->sc_cfflags = sc->sc_dev.dv_cfdata->cf_flags; sc->sc_nexus = NULL; sc->sc_active = 0; bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); /* Initialize command block queue */ TAILQ_INIT(&sc->ready_list); TAILQ_INIT(&sc->nexus_list); TAILQ_INIT(&sc->free_list); /* Initialize each command block */ for (i = 0; i < OSIOP_NACB; i++, acb++) { bus_addr_t dsa; err = bus_dmamap_create(sc->sc_dmat, OSIOP_MAX_XFER, OSIOP_NSG, OSIOP_MAX_XFER, 0, BUS_DMA_NOWAIT, &acb->datadma); if (err) { printf(": failed to create datadma map, err=%d\n", err); return; } acb->sc = sc; acb->ds = &sc->sc_ds[i]; acb->dsoffset = sizeof(struct osiop_ds) * i; dsa = sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset; acb->ds->id.addr = dsa + OSIOP_DSIDOFF; acb->ds->cmd.addr = dsa + OSIOP_DSCMDOFF; acb->ds->status.count = 1; acb->ds->status.addr = dsa + OSIOP_DSSTATOFF; acb->ds->msg.count = 1; acb->ds->msg.addr = dsa + OSIOP_DSMSGOFF; acb->ds->msgin.count = 1; acb->ds->msgin.addr = dsa + OSIOP_DSMSGINOFF; acb->ds->extmsg.count = 1; acb->ds->extmsg.addr = dsa + OSIOP_DSEXTMSGOFF; acb->ds->synmsg.count = 3; acb->ds->synmsg.addr = dsa + OSIOP_DSSYNMSGOFF; TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); } printf(": NCR53C710 rev %d, %dMHz\n", osiop_read_1(sc, OSIOP_CTEST8) >> 4, sc->sc_clock_freq); /* * Initialize all */ osiop_init(sc); /* * Fill in the sc_link. */ sc->sc_link.adapter = &osiop_adapter; sc->sc_link.adapter_softc = sc; sc->sc_link.device = &osiop_dev; sc->sc_link.openings = 4; sc->sc_link.adapter_buswidth = OSIOP_NTGT; sc->sc_link.adapter_target = sc->sc_id; bzero(&saa, sizeof(saa)); saa.saa_sc_link = &sc->sc_link; /* * Now try to attach all the sub devices. */ config_found(&sc->sc_dev, &saa, scsiprint); } /* * default minphys routine for osiop based controllers */ void osiop_minphys(bp) struct buf *bp; { if (bp->b_bcount > OSIOP_MAX_XFER) bp->b_bcount = OSIOP_MAX_XFER; minphys(bp); } /* * used by specific osiop controller * */ int osiop_scsicmd(xs) struct scsi_xfer *xs; { struct scsi_link *periph = xs->sc_link; struct osiop_acb *acb; struct osiop_softc *sc = periph->adapter_softc; int err, s; /* XXXX ?? */ if (xs->flags & SCSI_DATA_UIO) panic("osiop: scsi data uio requested"); /* XXXX ?? */ if (sc->sc_nexus && (xs->flags & SCSI_POLL)) #if 0 panic("osiop_scsicmd: busy"); #else printf("osiop_scsicmd: busy\n"); #endif s = splbio(); acb = TAILQ_FIRST(&sc->free_list); if (acb != NULL) { TAILQ_REMOVE(&sc->free_list, acb, chain); } else { #ifdef DIAGNOSTIC sc_print_addr(periph); printf("unable to allocate acb\n"); panic("osiop_scsipi_request"); #endif splx(s); return (TRY_AGAIN_LATER); } acb->flags = 0; acb->status = ACB_S_READY; acb->xs = xs; acb->xsflags = xs->flags; bcopy(xs->cmd, &acb->ds->scsi_cmd, xs->cmdlen); acb->ds->cmd.count = xs->cmdlen; acb->datalen = 0; #ifdef OSIOP_DEBUG acb->data = xs->data; #endif /* Setup DMA map for data buffer */ if (acb->xsflags & (SCSI_DATA_IN | SCSI_DATA_OUT)) { acb->datalen = xs->datalen; err = bus_dmamap_load(sc->sc_dmat, acb->datadma, xs->data, acb->datalen, NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | ((acb->xsflags & SCSI_DATA_IN) ? BUS_DMA_READ : BUS_DMA_WRITE)); if (err) { printf("%s: unable to load data DMA map: %d", sc->sc_dev.dv_xname, err); xs->error = XS_DRIVER_STUFFUP; scsi_done(xs); TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); splx(s); return (COMPLETE); } bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, (acb->xsflags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); } /* * Always initialize timeout so it does not contain trash * that could confuse timeout_del(). */ timeout_set(&xs->stimeout, osiop_timeout, acb); TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); osiop_sched(sc); splx(s); if ((acb->xsflags & SCSI_POLL) || (sc->sc_flags & OSIOP_NODMA)) osiop_poll(sc, acb); else /* start expire timer */ timeout_add(&xs->stimeout, (xs->timeout/1000) * hz); if (xs->flags & (SCSI_POLL | ITSDONE)) return (COMPLETE); else return (SUCCESSFULLY_QUEUED); } void osiop_poll(sc, acb) struct osiop_softc *sc; struct osiop_acb *acb; { struct scsi_xfer *xs = acb->xs; int status, i, s, to; u_int8_t istat, dstat, sstat0; s = splbio(); to = xs->timeout / 1000; if (!TAILQ_EMPTY(&sc->nexus_list)) printf("%s: osiop_poll called with disconnected device\n", sc->sc_dev.dv_xname); for (;;) { i = 1000; while (((istat = osiop_read_1(sc, OSIOP_ISTAT)) & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { if (i <= 0) { #ifdef OSIOP_DEBUG printf("waiting: tgt %d cmd %02x sbcl %02x" " dsp %x (+%lx) dcmd %x" " ds %p timeout %d\n", xs->sc_link->target, acb->ds->scsi_cmd.opcode, osiop_read_1(sc, OSIOP_SBCL), osiop_read_4(sc, OSIOP_DSP), osiop_read_4(sc, OSIOP_DSP) - sc->sc_scrdma->dm_segs[0].ds_addr, osiop_read_1(sc, OSIOP_DCMD), acb->ds, acb->xs->timeout); #endif i = 1000; to--; if (to <= 0) { osiop_reset(sc); splx(s); return; } } delay(1000); i--; } sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); delay(25); /* Need delay between SSTAT0 and DSTAT reads */ dstat = osiop_read_1(sc, OSIOP_DSTAT); if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { if (acb != sc->sc_nexus) printf("%s: osiop_poll disconnected device" " completed\n", sc->sc_dev.dv_xname); else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { sc->sc_flags &= ~OSIOP_INTSOFF; osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); } osiop_scsidone(sc->sc_nexus, status); } if (xs->flags & ITSDONE) break; } splx(s); return; } /* * start next command that's ready */ void osiop_sched(sc) struct osiop_softc *sc; { struct osiop_tinfo *ti; struct scsi_link *periph; struct osiop_acb *acb; if ((sc->sc_nexus != NULL) || TAILQ_EMPTY(&sc->ready_list)) { #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SCHED) printf("%s: osiop_sched->nexus %p/%d ready %p/%d\n", sc->sc_dev.dv_xname, sc->sc_nexus, sc->sc_nexus != NULL ? sc->sc_nexus->xs->sc_link->target : 0, TAILQ_FIRST(&sc->ready_list), TAILQ_FIRST(&sc->ready_list) != NULL ? TAILQ_FIRST(&sc->ready_list)->xs->sc_link->target : 0); #endif return; } TAILQ_FOREACH(acb, &sc->ready_list, chain) { periph = acb->xs->sc_link; ti = &sc->sc_tinfo[periph->target]; if ((ti->lubusy & (1 << periph->lun)) == 0) { TAILQ_REMOVE(&sc->ready_list, acb, chain); sc->sc_nexus = acb; ti->lubusy |= (1 << periph->lun); break; } } if (acb == NULL) { #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SCHED) printf("%s: osiop_sched didn't find ready command\n", sc->sc_dev.dv_xname); #endif return; } if (acb->xsflags & SCSI_RESET) osiop_reset(sc); sc->sc_active++; osiop_select(sc); } void osiop_scsidone(acb, status) struct osiop_acb *acb; int status; { struct scsi_xfer *xs; struct scsi_link *periph; struct osiop_softc *sc; int autosense; #ifdef DIAGNOSTIC if (acb == NULL || acb->xs == NULL) { printf("osiop_scsidone: NULL acb or scsi_xfer\n"); #if defined(OSIOP_DEBUG) && defined(DDB) Debugger(); #endif return; } #endif xs = acb->xs; sc = acb->sc; periph = xs->sc_link; /* * Record if this is the completion of an auto sense * scsi command, and then reset the flag so we don't loop * when such a command fails or times out. */ autosense = acb->flags & ACB_F_AUTOSENSE; acb->flags &= ~ACB_F_AUTOSENSE; #ifdef OSIOP_DEBUG if (acb->status != ACB_S_DONE) printf("%s: acb not done (status %d)\n", sc->sc_dev.dv_xname, acb->status); #endif if (acb->xsflags & (SCSI_DATA_IN | SCSI_DATA_OUT)) { bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, acb->datalen, (acb->xsflags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, acb->datadma); } timeout_del(&xs->stimeout); xs->status = status; switch (status) { case SCSI_OK: if (autosense == 0) xs->error = XS_NOERROR; else xs->error = XS_SENSE; break; case SCSI_BUSY: xs->error = XS_BUSY; break; case SCSI_CHECK: if (autosense == 0) acb->flags |= ACB_F_AUTOSENSE; else xs->error = XS_DRIVER_STUFFUP; break; case SCSI_OSIOP_NOCHECK: /* * don't check status, xs->error is already valid */ break; case SCSI_OSIOP_NOSTATUS: /* * the status byte was not updated, cmd was * aborted */ xs->error = XS_SELTIMEOUT; break; default: #ifdef OSIOP_DEBUG printf("%s: osiop_scsidone: unknown status code (0x%02x)\n", sc->sc_dev.dv_xname, status); #endif xs->error = XS_DRIVER_STUFFUP; break; } /* * Remove the ACB from whatever queue it's on. We have to do a bit of * a hack to figure out which queue it's on. Note that it is *not* * necessary to cdr down the ready queue, but we must cdr down the * nexus queue and see if it's there, so we can mark the unit as no * longer busy. This code is sickening, but it works. */ if (acb == sc->sc_nexus) { sc->sc_nexus = NULL; sc->sc_tinfo[periph->target].lubusy &= ~(1 << periph->lun); sc->sc_active--; OSIOP_TRACE('d', 'a', status, 0); } else if (sc->ready_list.tqh_last == &TAILQ_NEXT(acb, chain)) { TAILQ_REMOVE(&sc->ready_list, acb, chain); OSIOP_TRACE('d', 'r', status, 0); } else { struct osiop_acb *acb2; TAILQ_FOREACH(acb2, &sc->nexus_list, chain) { if (acb2 == acb) { TAILQ_REMOVE(&sc->nexus_list, acb, chain); sc->sc_tinfo[periph->target].lubusy &= ~(1 << periph->lun); sc->sc_active--; break; } } if (acb2 == NULL) { if (TAILQ_NEXT(acb, chain) != NULL) { TAILQ_REMOVE(&sc->ready_list, acb, chain); sc->sc_active--; } else { printf("%s: can't find matching acb\n", sc->sc_dev.dv_xname); #ifdef DDB #if 0 Debugger(); #endif #endif } } OSIOP_TRACE('d', 'n', status, 0); } if ((acb->flags & ACB_F_AUTOSENSE) == 0) { /* Put it on the free list. */ FREE: acb->status = ACB_S_FREE; TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); sc->sc_tinfo[periph->target].cmds++; xs->resid = 0; xs->flags |= ITSDONE; scsi_done(xs); } else { /* Set up REQUEST_SENSE command */ struct scsi_sense *cmd = (struct scsi_sense *)&acb->ds->scsi_cmd; int err; bzero(cmd, sizeof(*cmd)); acb->ds->cmd.count = sizeof(*cmd); cmd->opcode = REQUEST_SENSE; cmd->byte2 = xs->sc_link->lun << 5; cmd->length = sizeof(xs->sense); /* Setup DMA map for data buffer */ acb->xsflags &= SCSI_POLL | SCSI_NOSLEEP; acb->xsflags |= SCSI_DATA_IN; acb->datalen = sizeof xs->sense; #ifdef OSIOP_DEBUG acb->data = &xs->sense; #endif err = bus_dmamap_load(sc->sc_dmat, acb->datadma, &xs->sense, sizeof(xs->sense), NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | BUS_DMA_READ); if (err) { printf("%s: unable to load REQUEST_SENSE data DMA map: %d", sc->sc_dev.dv_xname, err); xs->error = XS_DRIVER_STUFFUP; goto FREE; } bus_dmamap_sync(sc->sc_dmat, acb->datadma, 0, sizeof(xs->sense), BUS_DMASYNC_PREREAD); sc->sc_tinfo[periph->target].senses++; acb->status = ACB_S_READY; TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); if (((acb->xsflags & SCSI_POLL) == 0) && ((sc->sc_flags & OSIOP_NODMA) == 0)) /* start expire timer */ timeout_add(&xs->stimeout, (xs->timeout/1000) * hz); } osiop_sched(sc); } void osiop_abort(sc, where) struct osiop_softc *sc; const char *where; { u_int8_t dstat, sstat0; sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); delay(25); /* Need delay between SSTAT0 and DSTAT reads */ dstat = osiop_read_1(sc, OSIOP_DSTAT); printf("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", sc->sc_dev.dv_xname, where, dstat, sstat0, osiop_read_1(sc, OSIOP_SBCL)); /* XXX XXX XXX */ if (sc->sc_active > 0) { sc->sc_active = 0; } } void osiop_init(sc) struct osiop_softc *sc; { int i, inhibit_sync, inhibit_disc; sc->sc_tcp[1] = 1000 / sc->sc_clock_freq; sc->sc_tcp[2] = 1500 / sc->sc_clock_freq; sc->sc_tcp[3] = 2000 / sc->sc_clock_freq; sc->sc_minsync = sc->sc_tcp[1]; /* in 4ns units */ if (sc->sc_minsync < 25) sc->sc_minsync = 25; if (sc->sc_clock_freq <= 25) { sc->sc_dcntl |= OSIOP_DCNTL_CF_1; /* SCLK/1 */ sc->sc_tcp[0] = sc->sc_tcp[1]; } else if (sc->sc_clock_freq <= 37) { sc->sc_dcntl |= OSIOP_DCNTL_CF_1_5; /* SCLK/1.5 */ sc->sc_tcp[0] = sc->sc_tcp[2]; } else if (sc->sc_clock_freq <= 50) { sc->sc_dcntl |= OSIOP_DCNTL_CF_2; /* SCLK/2 */ sc->sc_tcp[0] = sc->sc_tcp[3]; } else { sc->sc_dcntl |= OSIOP_DCNTL_CF_3; /* SCLK/3 */ sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; } if ((sc->sc_cfflags & 0x10000) != 0) { sc->sc_flags |= OSIOP_NODMA; #ifdef OSIOP_DEBUG printf("%s: DMA disabled; use polling\n", sc->sc_dev.dv_xname); #endif } inhibit_sync = (sc->sc_cfflags & 0xff00) >> 8; /* XXX */ inhibit_disc = sc->sc_cfflags & 0x00ff; /* XXX */ #ifdef OSIOP_DEBUG if (inhibit_sync != 0) printf("%s: Inhibiting synchronous transfer: 0x%02x\n", sc->sc_dev.dv_xname, inhibit_sync); if (inhibit_disc != 0) printf("%s: Inhibiting disconnect: 0x%02x\n", sc->sc_dev.dv_xname, inhibit_disc); #endif for (i = 0; i < OSIOP_NTGT; i++) { if (inhibit_sync & (1 << i)) sc->sc_tinfo[i].flags |= TI_NOSYNC; if (inhibit_disc & (1 << i)) sc->sc_tinfo[i].flags |= TI_NODISC; } osiop_resetbus(sc); osiop_reset(sc); } void osiop_reset(sc) struct osiop_softc *sc; { struct osiop_acb *acb; int i, s; u_int8_t stat; #ifdef OSIOP_DEBUG printf("%s: resetting chip\n", sc->sc_dev.dv_xname); #endif if (sc->sc_flags & OSIOP_ALIVE) osiop_abort(sc, "reset"); s = splbio(); /* * Reset the chip * XXX - is this really needed? */ /* abort current script */ osiop_write_1(sc, OSIOP_ISTAT, osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_ABRT); /* reset chip */ osiop_write_1(sc, OSIOP_ISTAT, osiop_read_1(sc, OSIOP_ISTAT) | OSIOP_ISTAT_RST); delay(100); osiop_write_1(sc, OSIOP_ISTAT, osiop_read_1(sc, OSIOP_ISTAT) & ~OSIOP_ISTAT_RST); delay(100); /* * Set up various chip parameters */ osiop_write_1(sc, OSIOP_SCNTL0, OSIOP_ARB_FULL | OSIOP_SCNTL0_EPC | OSIOP_SCNTL0_EPG); osiop_write_1(sc, OSIOP_SCNTL1, OSIOP_SCNTL1_ESR); osiop_write_1(sc, OSIOP_DCNTL, sc->sc_dcntl); osiop_write_1(sc, OSIOP_DMODE, sc->sc_dmode); /* don't enable interrupts yet */ osiop_write_1(sc, OSIOP_SIEN, 0x00); osiop_write_1(sc, OSIOP_DIEN, 0x00); osiop_write_1(sc, OSIOP_SCID, OSIOP_SCID_VALUE(sc->sc_id)); osiop_write_1(sc, OSIOP_DWT, 0x00); osiop_write_1(sc, OSIOP_CTEST0, osiop_read_1(sc, OSIOP_CTEST0) | OSIOP_CTEST0_BTD | OSIOP_CTEST0_EAN); osiop_write_1(sc, OSIOP_CTEST7, osiop_read_1(sc, OSIOP_CTEST7) | sc->sc_ctest7); /* will need to re-negotiate sync xfers */ for (i = 0; i < OSIOP_NTGT; i++) { sc->sc_tinfo[i].state = NEG_INIT; sc->sc_tinfo[i].period = 0; sc->sc_tinfo[i].offset = 0; } stat = osiop_read_1(sc, OSIOP_ISTAT); if (stat & OSIOP_ISTAT_SIP) osiop_read_1(sc, OSIOP_SSTAT0); if (stat & OSIOP_ISTAT_DIP) { if (stat & OSIOP_ISTAT_SIP) /* Need delay between SSTAT0 and DSTAT reads */ delay(25); osiop_read_1(sc, OSIOP_DSTAT); } splx(s); delay(osiop_reset_delay * 1000); s = splbio(); if (sc->sc_nexus != NULL) { sc->sc_nexus->xs->error = (sc->sc_nexus->flags & ACB_F_TIMEOUT) ? XS_TIMEOUT : XS_RESET; sc->sc_nexus->status = ACB_S_DONE; osiop_scsidone(sc->sc_nexus, SCSI_OSIOP_NOCHECK); } while ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { acb->xs->error = (acb->flags & ACB_F_TIMEOUT) ? XS_TIMEOUT : XS_RESET; acb->status = ACB_S_DONE; osiop_scsidone(acb, SCSI_OSIOP_NOCHECK); } splx(s); sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); /* enable SCSI and DMA interrupts */ sc->sc_sien = OSIOP_SIEN_M_A | OSIOP_SIEN_STO | /*OSIOP_SIEN_SEL |*/ OSIOP_SIEN_SGE | OSIOP_SIEN_UDC | OSIOP_SIEN_RST | OSIOP_SIEN_PAR; sc->sc_dien = OSIOP_DIEN_BF | OSIOP_DIEN_ABRT | OSIOP_DIEN_SIR | /*OSIOP_DIEN_WTD |*/ OSIOP_DIEN_IID; osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); } void osiop_resetbus(sc) struct osiop_softc *sc; { osiop_write_1(sc, OSIOP_SIEN, 0); osiop_write_1(sc, OSIOP_SCNTL1, osiop_read_1(sc, OSIOP_SCNTL1) | OSIOP_SCNTL1_RST); delay(25); osiop_write_1(sc, OSIOP_SCNTL1, osiop_read_1(sc, OSIOP_SCNTL1) & ~OSIOP_SCNTL1_RST); } /* * Setup Data Storage for 53C710 and start SCRIPTS processing */ void osiop_start(sc) struct osiop_softc *sc; { struct osiop_acb *acb = sc->sc_nexus; struct osiop_ds *ds = acb->ds; struct scsi_xfer *xs = acb->xs; bus_dmamap_t dsdma = sc->sc_dsdma, datadma = acb->datadma; struct osiop_tinfo *ti; int target = xs->sc_link->target; int lun = xs->sc_link->lun; int disconnect, i; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC && osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { printf("ACK! osiop was busy: script %p dsa %p active %d\n", sc->sc_script, acb->ds, sc->sc_active); printf("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", osiop_read_1(sc, OSIOP_ISTAT), osiop_read_1(sc, OSIOP_SFBR), osiop_read_1(sc, OSIOP_LCRC), osiop_read_1(sc, OSIOP_SIEN), osiop_read_1(sc, OSIOP_DIEN)); #ifdef DDB #if 0 Debugger(); #endif #endif } #endif #ifdef OSIOP_DEBUG if (acb->status != ACB_S_READY) panic("osiop_start: non-ready cmd in acb"); #endif acb->intstat = 0; ti = &sc->sc_tinfo[target]; ds->scsi_addr = ((1 << 16) << target) | (ti->sxfer << 8); disconnect = (ds->scsi_cmd.opcode != REQUEST_SENSE) && (ti->flags & TI_NODISC) == 0; ds->msgout[0] = MSG_IDENTIFY(lun, disconnect); ds->id.count = 1; ds->stat[0] = SCSI_OSIOP_NOSTATUS; /* set invalid status */ ds->msgbuf[0] = ds->msgbuf[1] = MSG_INVALID; bzero(&ds->data, sizeof(ds->data)); /* * Negotiate wide is the initial negotiation state; since the 53c710 * doesn't do wide transfers, just begin the synchronous transfer * negotiation here. */ if (ti->state == NEG_INIT) { if ((ti->flags & TI_NOSYNC) != 0) { ti->state = NEG_DONE; ti->period = 0; ti->offset = 0; osiop_update_xfer_mode(sc, target); #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) printf("Forcing target %d asynchronous\n", target); #endif } else { ds->msgbuf[2] = MSG_INVALID; ds->msgout[1] = MSG_EXTENDED; ds->msgout[2] = MSG_EXT_SDTR_LEN; ds->msgout[3] = MSG_EXT_SDTR; ds->msgout[4] = sc->sc_minsync; ds->msgout[5] = OSIOP_MAX_OFFSET; ds->id.count = MSG_EXT_SDTR_LEN + 3; ti->state = NEG_WAITS; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) printf("Sending sync request to target %d\n", target); #endif } } acb->curaddr = 0; acb->curlen = 0; /* * Build physical DMA addresses for scatter/gather I/O */ if (acb->xsflags & (SCSI_DATA_IN | SCSI_DATA_OUT)) { for (i = 0; i < datadma->dm_nsegs; i++) { ds->data[i].count = datadma->dm_segs[i].ds_len; ds->data[i].addr = datadma->dm_segs[i].ds_addr; } } /* sync script data structure */ bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); acb->status = ACB_S_ACTIVE; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC && osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { printf("ACK! osiop was busy at start: " "script %p dsa %p active %d\n", sc->sc_script, acb->ds, sc->sc_active); #ifdef DDB #if 0 Debugger(); #endif #endif } #endif if (TAILQ_EMPTY(&sc->nexus_list)) { if (osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) printf("%s: osiop_select while connected?\n", sc->sc_dev.dv_xname); osiop_write_4(sc, OSIOP_TEMP, 0); osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); osiop_write_4(sc, OSIOP_DSA, dsdma->dm_segs[0].ds_addr + acb->dsoffset); osiop_write_4(sc, OSIOP_DSP, sc->sc_scrdma->dm_segs[0].ds_addr + Ent_scripts); OSIOP_TRACE('s', 1, 0, 0); } else { if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { osiop_write_1(sc, OSIOP_ISTAT, OSIOP_ISTAT_SIGP); OSIOP_TRACE('s', 2, 0, 0); } else { OSIOP_TRACE('s', 3, osiop_read_1(sc, OSIOP_ISTAT), 0); } } #ifdef OSIOP_DEBUG osiopstarts++; #endif } /* * Process a DMA or SCSI interrupt from the 53C710 SIOP */ int osiop_checkintr(sc, istat, dstat, sstat0, status) struct osiop_softc *sc; u_int8_t istat; u_int8_t dstat; u_int8_t sstat0; int *status; { struct osiop_acb *acb = sc->sc_nexus; struct osiop_ds *ds; bus_dmamap_t dsdma = sc->sc_dsdma; bus_addr_t scraddr = sc->sc_scrdma->dm_segs[0].ds_addr; int target = 0; int dfifo, dbc, intcode, sstat1; dfifo = osiop_read_1(sc, OSIOP_DFIFO); dbc = osiop_read_4(sc, OSIOP_DBC) & 0x00ffffff; sstat1 = osiop_read_1(sc, OSIOP_SSTAT1); osiop_write_1(sc, OSIOP_CTEST8, osiop_read_1(sc, OSIOP_CTEST8) | OSIOP_CTEST8_CLF); while ((osiop_read_1(sc, OSIOP_CTEST1) & OSIOP_CTEST1_FMT) != OSIOP_CTEST1_FMT) ; osiop_write_1(sc, OSIOP_CTEST8, osiop_read_1(sc, OSIOP_CTEST8) & ~OSIOP_CTEST8_CLF); intcode = osiop_read_4(sc, OSIOP_DSPS); #ifdef OSIOP_DEBUG osiopints++; if (osiop_read_4(sc, OSIOP_DSP) != 0 && (osiop_read_4(sc, OSIOP_DSP) < scraddr || osiop_read_4(sc, OSIOP_DSP) >= scraddr + sizeof(osiop_script))) { printf("%s: dsp not within script dsp %x scripts %lx:%lx", sc->sc_dev.dv_xname, osiop_read_4(sc, OSIOP_DSP), scraddr, scraddr + sizeof(osiop_script)); printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); #ifdef DDB Debugger(); #endif } #endif OSIOP_TRACE('i', dstat, istat, (istat & OSIOP_ISTAT_DIP) ? intcode & 0xff : sstat0); ds = NULL; if (acb != NULL) { /* XXX */ ds = acb->ds; bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); #ifdef OSIOP_DEBUG if (acb->status != ACB_S_ACTIVE) printf("osiop_checkintr: acb not active (status %d)\n", acb->status); #endif } if (dstat & OSIOP_DSTAT_SIR && intcode == A_ok) { /* Normal completion status, or check condition */ struct osiop_tinfo *ti; if (acb == NULL) { printf("%s: COMPLETE with no active command?\n", sc->sc_dev.dv_xname); return (0); } #ifdef OSIOP_DEBUG if (osiop_read_4(sc, OSIOP_DSA) != dsdma->dm_segs[0].ds_addr + acb->dsoffset) { printf("osiop: invalid dsa: %x %lx\n", osiop_read_4(sc, OSIOP_DSA), dsdma->dm_segs[0].ds_addr + acb->dsoffset); panic("*** osiop DSA invalid ***"); } #endif target = acb->xs->sc_link->target; ti = &sc->sc_tinfo[target]; if (ti->state == NEG_WAITS) { if (ds->msgbuf[1] == MSG_INVALID) printf("%s: target %d ignored sync request\n", sc->sc_dev.dv_xname, target); else if (ds->msgbuf[1] == MSG_MESSAGE_REJECT) printf("%s: target %d rejected sync request\n", sc->sc_dev.dv_xname, target); ti->period = 0; ti->offset = 0; osiop_update_xfer_mode(sc, target); ti->state = NEG_DONE; } #ifdef OSIOP_DEBUG if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { #if 0 printf("ACK! osiop was busy at end: " "script %p dsa %p\n", &osiop_script, ds); #ifdef DDB Debugger(); #endif #endif } if (ds->msgbuf[0] != MSG_CMDCOMPLETE) printf("%s: message was not COMMAND COMPLETE: %02x\n", sc->sc_dev.dv_xname, ds->msgbuf[0]); #endif if (!TAILQ_EMPTY(&sc->nexus_list)) osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); *status = ds->stat[0]; acb->status = ACB_S_DONE; return (1); } if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_syncmsg) { if (acb == NULL) { printf("%s: Sync message with no active command?\n", sc->sc_dev.dv_xname); return (0); } target = acb->xs->sc_link->target; if (ds->msgbuf[1] == MSG_EXTENDED && ds->msgbuf[2] == MSG_EXT_SDTR_LEN && ds->msgbuf[3] == MSG_EXT_SDTR) { struct osiop_tinfo *ti = &sc->sc_tinfo[target]; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) printf("sync msg in: " "%02x %02x %02x %02x %02x %02x\n", ds->msgbuf[0], ds->msgbuf[1], ds->msgbuf[2], ds->msgbuf[3], ds->msgbuf[4], ds->msgbuf[5]); #endif ti->period = ds->msgbuf[4]; ti->offset = ds->msgbuf[5]; osiop_update_xfer_mode(sc, target); bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); osiop_write_1(sc, OSIOP_SXFER, ti->sxfer); osiop_write_1(sc, OSIOP_SBCL, ti->sbcl); if (ti->state == NEG_WAITS) { ti->state = NEG_DONE; osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_clear_ack); return (0); } osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); ti->state = NEG_DONE; return (0); } /* XXX - not SDTR message */ } if (sstat0 & OSIOP_SSTAT0_M_A) { /* Phase mismatch */ #ifdef OSIOP_DEBUG osiopphmm++; #endif if (acb == NULL) { printf("%s: Phase mismatch with no active command?\n", sc->sc_dev.dv_xname); return (0); } if (acb->datalen > 0) { int adjust = (dfifo - (dbc & 0x7f)) & 0x7f; if (sstat1 & OSIOP_SSTAT1_ORF) adjust++; if (sstat1 & OSIOP_SSTAT1_OLF) adjust++; acb->curaddr = osiop_read_4(sc, OSIOP_DNAD) - adjust; acb->curlen = dbc + adjust; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) { printf("Phase mismatch: curaddr %lx " "curlen %lx dfifo %x dbc %x sstat1 %x " "adjust %x sbcl %x starts %d acb %p\n", acb->curaddr, acb->curlen, dfifo, dbc, sstat1, adjust, osiop_read_1(sc, OSIOP_SBCL), osiopstarts, acb); if (ds->data[1].count != 0) { int i; for (i = 0; ds->data[i].count != 0; i++) printf("chain[%d] " "addr %x len %x\n", i, ds->data[i].addr, ds->data[i].count); } bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } #endif } #ifdef OSIOP_DEBUG OSIOP_TRACE('m', osiop_read_1(sc, OSIOP_SBCL), osiop_read_4(sc, OSIOP_DSP) >> 8, osiop_read_4(sc, OSIOP_DSP)); if (osiop_debug & DEBUG_PHASE) printf("Phase mismatch: %x dsp +%lx dcmd %x\n", osiop_read_1(sc, OSIOP_SBCL), osiop_read_4(sc, OSIOP_DSP) - scraddr, osiop_read_4(sc, OSIOP_DBC)); #endif if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_REQ) == 0) { printf("Phase mismatch: " "REQ not asserted! %02x dsp %x\n", osiop_read_1(sc, OSIOP_SBCL), osiop_read_4(sc, OSIOP_DSP)); #if defined(OSIOP_DEBUG) && defined(DDB) /*Debugger(); XXX is*/ #endif } switch (OSIOP_PHASE(osiop_read_1(sc, OSIOP_SBCL))) { case DATA_OUT_PHASE: case DATA_IN_PHASE: case STATUS_PHASE: case COMMAND_PHASE: case MSG_IN_PHASE: case MSG_OUT_PHASE: osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); break; default: printf("%s: invalid phase\n", sc->sc_dev.dv_xname); goto bad_phase; } return (0); } if (sstat0 & OSIOP_SSTAT0_STO) { /* Select timed out */ if (acb == NULL) { printf("%s: Select timeout with no active command?\n", sc->sc_dev.dv_xname); #if 0 return (0); #else goto bad_phase; #endif } #ifdef OSIOP_DEBUG if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { printf("ACK! osiop was busy at timeout: " "script %p dsa %lx\n", sc->sc_script, dsdma->dm_segs[0].ds_addr + acb->dsoffset); printf(" sbcl %x sdid %x " "istat %x dstat %x sstat0 %x\n", osiop_read_1(sc, OSIOP_SBCL), osiop_read_1(sc, OSIOP_SDID), istat, dstat, sstat0); if ((osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) == 0) { printf("Yikes, it's not busy now!\n"); #if 0 *status = SCSI_OSIOP_NOSTATUS; if (!TAILQ_EMPTY(&sc->nexus_list)) osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); return (1); #endif } #if 0 osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); #endif #ifdef DDB Debugger(); #endif return (0); } #endif acb->status = ACB_S_DONE; *status = SCSI_OSIOP_NOSTATUS; acb->xs->error = XS_SELTIMEOUT; if (!TAILQ_EMPTY(&sc->nexus_list)) osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); return (1); } if (acb != NULL) target = acb->xs->sc_link->target; else target = sc->sc_id; if (sstat0 & OSIOP_SSTAT0_UDC) { #ifdef OSIOP_DEBUG if (acb == NULL) printf("%s: Unexpected disconnect " "with no active command?\n", sc->sc_dev.dv_xname); printf("%s: target %d disconnected unexpectedly\n", sc->sc_dev.dv_xname, target); #endif #if 0 osiop_abort(sc, "osiop_chkintr"); #endif *status = SCSI_CHECK; if (!TAILQ_EMPTY(&sc->nexus_list)) osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); return (acb != NULL); } if (dstat & OSIOP_DSTAT_SIR && (intcode == A_int_disc || intcode == A_int_disc_wodp)) { /* Disconnect */ if (acb == NULL) { printf("%s: Disconnect with no active command?\n", sc->sc_dev.dv_xname); return (0); } #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) { printf("%s: ID %02x disconnected TEMP %x (+%lx) " "curaddr %lx curlen %lx buf %x len %x dfifo %x " "dbc %x sstat1 %x starts %d acb %p\n", sc->sc_dev.dv_xname, 1 << target, osiop_read_4(sc, OSIOP_TEMP), (osiop_read_4(sc, OSIOP_TEMP) != 0) ? osiop_read_4(sc, OSIOP_TEMP) - scraddr : 0, acb->curaddr, acb->curlen, ds->data[0].addr, ds->data[0].count, dfifo, dbc, sstat1, osiopstarts, acb); bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } #endif /* * XXXX need to update curaddr/curlen to reflect * current data transferred. If device disconnected in * the middle of a DMA block, they should already be set * by the phase change interrupt. If the disconnect * occurs on a DMA block boundary, we have to figure out * which DMA block it was. */ if (acb->datalen > 0 && osiop_read_4(sc, OSIOP_TEMP) != 0) { long n = osiop_read_4(sc, OSIOP_TEMP) - scraddr; if (acb->curlen != 0 && acb->curlen != ds->data[0].count) printf("%s: curaddr/curlen already set? " "n %lx iob %lx/%lx chain[0] %x/%x\n", sc->sc_dev.dv_xname, n, acb->curaddr, acb->curlen, ds->data[0].addr, ds->data[0].count); if (n < Ent_datain) n = (n - Ent_dataout) / 16; else n = (n - Ent_datain) / 16; if (n < 0 || n >= OSIOP_NSG) printf("TEMP invalid %ld\n", n); else { acb->curaddr = ds->data[n].addr; acb->curlen = ds->data[n].count; } #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) { printf("%s: TEMP offset %ld", sc->sc_dev.dv_xname, n); printf(" curaddr %lx curlen %lx\n", acb->curaddr, acb->curlen); } #endif } /* * If data transfer was interrupted by disconnect, curaddr * and curlen should reflect the point of interruption. * Adjust the DMA chain so that the data transfer begins * at the appropriate place upon reselection. * XXX This should only be done on save data pointer message? */ if (acb->curlen > 0) { int i, j; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) printf("%s: adjusting DMA chain\n", sc->sc_dev.dv_xname); if (intcode == A_int_disc_wodp) printf("%s: ID %02x disconnected " "without Save Data Pointers\n", sc->sc_dev.dv_xname, 1 << target); #endif for (i = 0; i < OSIOP_NSG; i++) { if (ds->data[i].count == 0) break; if (acb->curaddr >= ds->data[i].addr && acb->curaddr < (ds->data[i].addr + ds->data[i].count)) break; } if (i >= OSIOP_NSG || ds->data[i].count == 0) { printf("couldn't find saved data pointer: " "curaddr %lx curlen %lx i %d\n", acb->curaddr, acb->curlen, i); #if defined(OSIOP_DEBUG) && defined(DDB) Debugger(); #endif } #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) printf(" chain[0]: %x/%x -> %lx/%lx\n", ds->data[0].addr, ds->data[0].count, acb->curaddr, acb->curlen); #endif ds->data[0].addr = acb->curaddr; ds->data[0].count = acb->curlen; for (j = 1, i = i + 1; i < OSIOP_NSG && ds->data[i].count > 0; i++, j++) { #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) printf(" chain[%d]: %x/%x -> %x/%x\n", j, ds->data[j].addr, ds->data[j].count, ds->data[i].addr, ds->data[i].count); #endif ds->data[j].addr = ds->data[i].addr; ds->data[j].count = ds->data[i].count; } if (j < OSIOP_NSG) { ds->data[j].addr = 0; ds->data[j].count = 0; } bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } sc->sc_tinfo[target].dconns++; /* * add nexus to waiting list * clear nexus * try to start another command for another target/lun */ acb->intstat = sc->sc_flags & OSIOP_INTSOFF; TAILQ_INSERT_TAIL(&sc->nexus_list, acb, chain); sc->sc_nexus = NULL; /* no current device */ osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_wait_reselect); /* XXXX start another command ? */ osiop_sched(sc); return (0); } if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_reconnect) { int reselid = ffs(osiop_read_4(sc, OSIOP_SCRATCH) & 0xff) - 1; int reselun = osiop_read_1(sc, OSIOP_SFBR) & 0x07; #ifdef OSIOP_DEBUG u_int8_t resmsg; #endif /* Reconnect */ /* XXXX save current SBCL */ sc->sc_sstat1 = osiop_read_1(sc, OSIOP_SBCL); #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) printf("%s: target ID %02x reselected dsps %x\n", sc->sc_dev.dv_xname, reselid, intcode); resmsg = osiop_read_1(sc, OSIOP_SFBR); if (!MSG_ISIDENTIFY(resmsg)) printf("%s: Reselect message in was not identify: " "%02x\n", sc->sc_dev.dv_xname, resmsg); #endif if (sc->sc_nexus != NULL) { struct scsi_link *periph = sc->sc_nexus->xs->sc_link; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DISC) printf("%s: reselect ID %02x w/active\n", sc->sc_dev.dv_xname, reselid); #endif TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); sc->sc_tinfo[periph->target].lubusy &= ~(1 << periph->lun); sc->sc_active--; } /* * locate acb of reselecting device * set sc->sc_nexus to acb */ TAILQ_FOREACH(acb, &sc->nexus_list, chain) { struct scsi_link *periph = acb->xs->sc_link; if (reselid != periph->target || reselun != periph->lun) { continue; } TAILQ_REMOVE(&sc->nexus_list, acb, chain); sc->sc_nexus = acb; sc->sc_flags |= acb->intstat; acb->intstat = 0; osiop_write_4(sc, OSIOP_DSA, dsdma->dm_segs[0].ds_addr + acb->dsoffset); osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[reselid].sxfer); osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[reselid].sbcl); break; } if (acb == NULL) { printf("%s: target ID %02x reselect nexus_list %p\n", sc->sc_dev.dv_xname, reselid, TAILQ_FIRST(&sc->nexus_list)); panic("unable to find reselecting device"); } osiop_write_4(sc, OSIOP_TEMP, 0); osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); return (0); } if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_connect) { #ifdef OSIOP_DEBUG u_int8_t ctest2 = osiop_read_1(sc, OSIOP_CTEST2); /* reselect was interrupted (by Sig_P or select) */ if (osiop_debug & DEBUG_DISC || (ctest2 & OSIOP_CTEST2_SIGP) == 0) printf("%s: reselect interrupted (Sig_P?) " "scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", sc->sc_dev.dv_xname, osiop_read_1(sc, OSIOP_SCNTL1), ctest2, osiop_read_1(sc, OSIOP_SFBR), istat, osiop_read_1(sc, OSIOP_ISTAT)); #endif /* XXX assumes it was not select */ if (sc->sc_nexus == NULL) { #ifdef OSIOP_DEBUG printf("%s: reselect interrupted, sc_nexus == NULL\n", sc->sc_dev.dv_xname); #if 0 osiop_dump(sc); #ifdef DDB Debugger(); #endif #endif #endif osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); return (0); } target = sc->sc_nexus->xs->sc_link->target; osiop_write_4(sc, OSIOP_TEMP, 0); osiop_write_4(sc, OSIOP_DSA, dsdma->dm_segs[0].ds_addr + sc->sc_nexus->dsoffset); osiop_write_1(sc, OSIOP_SXFER, sc->sc_tinfo[target].sxfer); osiop_write_1(sc, OSIOP_SBCL, sc->sc_tinfo[target].sbcl); osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_scripts); return (0); } if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_msgin) { /* Unrecognized message in byte */ if (acb == NULL) { printf("%s: Bad message-in with no active command?\n", sc->sc_dev.dv_xname); return (0); } printf("%s: Unrecognized message in data " "sfbr %x msg %x sbcl %x\n", sc->sc_dev.dv_xname, osiop_read_1(sc, OSIOP_SFBR), ds->msgbuf[1], osiop_read_1(sc, OSIOP_SBCL)); /* what should be done here? */ osiop_write_4(sc, OSIOP_DSP, scraddr + Ent_switch); bus_dmamap_sync(sc->sc_dmat, dsdma, acb->dsoffset, sizeof(struct osiop_ds), BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return (0); } if (dstat & OSIOP_DSTAT_SIR && intcode == A_int_status) { /* Status phase wasn't followed by message in phase? */ printf("%s: Status phase not followed by message in phase? " "sbcl %x sbdl %x\n", sc->sc_dev.dv_xname, osiop_read_1(sc, OSIOP_SBCL), osiop_read_1(sc, OSIOP_SBDL)); if (osiop_read_1(sc, OSIOP_SBCL) == 0xa7) { /* It is now, just continue the script? */ osiop_write_1(sc, OSIOP_DCNTL, osiop_read_1(sc, OSIOP_DCNTL) | OSIOP_DCNTL_STD); return (0); } } if (dstat & OSIOP_DSTAT_SIR && sstat0 == 0) { printf("OSIOP interrupt: %x sts %x msg %x %x sbcl %x\n", intcode, ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], osiop_read_1(sc, OSIOP_SBCL)); osiop_reset(sc); *status = SCSI_OSIOP_NOSTATUS; return (0); /* osiop_reset has cleaned up */ } if (sstat0 & OSIOP_SSTAT0_SGE) printf("%s: SCSI Gross Error\n", sc->sc_dev.dv_xname); if (sstat0 & OSIOP_SSTAT0_PAR) printf("%s: Parity Error\n", sc->sc_dev.dv_xname); if (dstat & OSIOP_DSTAT_IID) printf("%s: Invalid instruction detected\n", sc->sc_dev.dv_xname); bad_phase: /* * temporary panic for unhandled conditions * displays various things about the 53C710 status and registers * then panics. * XXXX need to clean this up to print out the info, reset, and continue */ printf("osiop_chkintr: target %x ds %p\n", target, ds); printf("scripts %lx ds %lx dsp %x dcmd %x\n", scraddr, sc->sc_dsdma->dm_segs[0].ds_addr + acb->dsoffset, osiop_read_4(sc, OSIOP_DSP), osiop_read_4(sc, OSIOP_DBC)); printf("osiop_chkintr: istat %x dstat %x sstat0 %x " "dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", istat, dstat, sstat0, intcode, osiop_read_4(sc, OSIOP_DSA), osiop_read_1(sc, OSIOP_SBCL), ds->stat[0], ds->msgbuf[0], ds->msgbuf[1], osiop_read_1(sc, OSIOP_SFBR)); #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_DMA) panic("osiop_chkintr: **** temp ****"); #if 0 #ifdef DDB Debugger(); #endif #endif #endif osiop_reset(sc); /* hard reset */ *status = SCSI_OSIOP_NOSTATUS; if (acb != NULL) acb->status = ACB_S_DONE; return (0); /* osiop_reset cleaned up */ } void osiop_select(sc) struct osiop_softc *sc; { struct osiop_acb *acb = sc->sc_nexus; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_CMD) printf("%s: select ", sc->sc_dev.dv_xname); #endif if (acb->xsflags & SCSI_POLL || sc->sc_flags & OSIOP_NODMA) { sc->sc_flags |= OSIOP_INTSOFF; sc->sc_flags &= ~OSIOP_INTDEFER; if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { osiop_write_1(sc, OSIOP_SIEN, 0); osiop_write_1(sc, OSIOP_DIEN, 0); } #if 0 } else if ((sc->sc_flags & OSIOP_INTDEFER) == 0) { sc->sc_flags &= ~OSIOP_INTSOFF; if ((osiop_read_1(sc, OSIOP_ISTAT) & OSIOP_ISTAT_CON) == 0) { osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); } #endif } #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_CMD) printf("osiop_select: target %x cmd %02x ds %p\n", acb->xs->sc_link->target, acb->ds->scsi_cmd.opcode, sc->sc_nexus->ds); #endif osiop_start(sc); return; } /* * 53C710 interrupt handler */ void osiop_intr(sc) struct osiop_softc *sc; { int status, s; u_int8_t istat, dstat, sstat0; s = splbio(); istat = sc->sc_istat; if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) { splx(s); return; } /* Got a valid interrupt on this device; set by MD handler */ dstat = sc->sc_dstat; sstat0 = sc->sc_sstat0; sc->sc_istat = 0; #ifdef OSIOP_DEBUG if (!sc->sc_active) { /* XXX needs sync */ printf("%s: spurious interrupt? " "istat %x dstat %x sstat0 %x nexus %p status %x\n", sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus, (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0); } #endif #ifdef OSIOP_DEBUG if (osiop_debug & (DEBUG_INT|DEBUG_CMD)) { /* XXX needs sync */ printf("%s: intr istat %x dstat %x sstat0 %x dsps %x " "sbcl %x dsp %x dcmd %x sts %x msg %x\n", sc->sc_dev.dv_xname, istat, dstat, sstat0, osiop_read_4(sc, OSIOP_DSPS), osiop_read_1(sc, OSIOP_SBCL), osiop_read_4(sc, OSIOP_DSP), osiop_read_4(sc, OSIOP_DBC), (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->stat[0] : 0, (sc->sc_nexus != NULL) ? sc->sc_nexus->ds->msgbuf[0] : 0); } #endif if (sc->sc_flags & OSIOP_INTDEFER) { sc->sc_flags &= ~(OSIOP_INTDEFER | OSIOP_INTSOFF); osiop_write_1(sc, OSIOP_SIEN, sc->sc_sien); osiop_write_1(sc, OSIOP_DIEN, sc->sc_dien); } if (osiop_checkintr(sc, istat, dstat, sstat0, &status)) { #if 0 if (status == SCSI_OSIOP_NOSTATUS) printf("osiop_intr: no valid status \n"); #endif if ((sc->sc_flags & (OSIOP_INTSOFF | OSIOP_INTDEFER)) != OSIOP_INTSOFF) { #if 0 if (osiop_read_1(sc, OSIOP_SBCL) & OSIOP_BSY) { struct scsi_link *periph; periph = sc->sc_nexus->xs->sc_link; printf("%s: SCSI bus busy at completion" " targ %d sbcl %02x sfbr %x lcrc " "%02x dsp +%x\n", sc->sc_dev.dv_xname, periph->periphtarget, osiop_read_1(sc, OSIOP_SBCL), osiop_read_1(sc, OSIOP_SFBR), osiop_read_1(sc, OSIOP_LCRC), osiop_read_4(sc, OSIOP_DSP) - sc->sc_scrdma->dm_segs[0].ds_addr); } #endif osiop_scsidone(sc->sc_nexus, status); } } splx(s); } void osiop_update_xfer_mode(sc, target) struct osiop_softc *sc; int target; { struct osiop_tinfo *ti = &sc->sc_tinfo[target]; printf("%s: target %d now using 8 bit ", sc->sc_dev.dv_xname, target); ti->sxfer = 0; ti->sbcl = 0; if (ti->offset != 0) { scsi_period_to_osiop(sc, target); switch (ti->period) { case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07: case 0x08: /* Reserved transfer period factor */ printf("??"); break; case 0x09: /* Transfer period = 12.5 ns */ printf("80"); break; case 0x0a: /* Transfer period = 25 ns */ printf("40"); break; case 0x0b: /* Transfer period = 30.3 ns */ printf("33"); break; case 0x0c: /* Transfer period = 50 ns */ printf("20"); break; default: /* Transfer period = ti->period*4 ns */ printf("%d", 1000/(ti->period*4)); break; } printf(" MHz %d REQ/ACK offset", ti->offset); } else printf("asynch"); printf(" xfers\n"); } /* * This is based on the Progressive Peripherals 33MHz Zeus driver and will * not be correct for other 53c710 boards. * */ void scsi_period_to_osiop(sc, target) struct osiop_softc *sc; int target; { int period, offset, sxfer, sbcl; #ifdef OSIOP_DEBUG int i; #endif period = sc->sc_tinfo[target].period; offset = sc->sc_tinfo[target].offset; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) { sxfer = 0; if (offset <= OSIOP_MAX_OFFSET) sxfer = offset; for (i = 0; i < sizeof(sync_tab) / sizeof(sync_tab[0]); i++) { if (period <= sync_tab[i].p) { sxfer |= sync_tab[i].r & 0x70; sbcl = sync_tab[i].r & 0x03; break; } } printf("osiop sync old: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); } #endif for (sbcl = 1; sbcl < 4; sbcl++) { sxfer = (period * 4 - 1) / sc->sc_tcp[sbcl] - 3; if (sxfer >= 0 && sxfer <= 7) break; } if (sbcl > 3) { printf("osiop sync: unable to compute sync params " "for period %d ns\n", period * 4); /* * XXX need to pick a value we can do and renegotiate */ sxfer = sbcl = 0; } else { sxfer = (sxfer << 4) | ((offset <= OSIOP_MAX_OFFSET) ? offset : OSIOP_MAX_OFFSET); #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) { printf("osiop sync: params for period %dns: sxfer %x sbcl %x", period * 4, sxfer, sbcl); printf(" actual period %dns\n", sc->sc_tcp[sbcl] * ((sxfer >> 4) + 4)); } #endif } sc->sc_tinfo[target].sxfer = sxfer; sc->sc_tinfo[target].sbcl = sbcl; #ifdef OSIOP_DEBUG if (osiop_debug & DEBUG_SYNC) printf("osiop sync: osiop_sxfr %02x, osiop_sbcl %02x\n", sxfer, sbcl); #endif } void osiop_timeout(arg) void *arg; { struct osiop_acb *acb = arg; struct scsi_xfer *xs = acb->xs; struct osiop_softc *sc = acb->sc; int s; sc_print_addr(xs->sc_link); printf("command 0x%02x timeout on xs %p\n", xs->cmd->opcode, xs); s = splbio(); /* reset the scsi bus */ osiop_resetbus(sc); acb->flags |= ACB_F_TIMEOUT; osiop_reset(sc); splx(s); return; } #ifdef OSIOP_DEBUG #if OSIOP_TRACE_SIZE void osiop_dump_trace() { int i; printf("osiop trace: next index %d\n", osiop_trix); i = osiop_trix; do { printf("%3d: '%c' %02x %02x %02x\n", i, osiop_trbuf[i], osiop_trbuf[i + 1], osiop_trbuf[i + 2], osiop_trbuf[i + 3]); i = (i + 4) & (OSIOP_TRACE_SIZE - 1); } while (i != osiop_trix); } #endif void osiop_dump_acb(acb) struct osiop_acb *acb; { u_int8_t *b; int i; printf("acb@%p ", acb); if (acb->xs == NULL) { printf("\n"); return; } b = (u_int8_t *)&acb->ds->scsi_cmd; printf("(%d:%d) status %2x cmdlen %2ld cmd ", acb->xs->sc_link->target, acb->xs->sc_link->lun, acb->status, acb->ds->cmd.count); for (i = acb->ds->cmd.count; i > 0; i--) printf(" %02x", *b++); printf("\n"); printf(" xs: %p data %p:%04x ", acb->xs, acb->data, acb->datalen); printf("cur %lx:%lx\n", acb->curaddr, acb->curlen); } void osiop_dump(sc) struct osiop_softc *sc; { struct osiop_acb *acb; int i, s; s = splbio(); #if OSIOP_TRACE_SIZE osiop_dump_trace(); #endif printf("%s@%p istat %02x\n", sc->sc_dev.dv_xname, sc, osiop_read_1(sc, OSIOP_ISTAT)); if ((acb = TAILQ_FIRST(&sc->free_list)) != NULL) { printf("Free list:\n"); while (acb) { osiop_dump_acb(acb); acb = TAILQ_NEXT(acb, chain); } } if ((acb = TAILQ_FIRST(&sc->ready_list)) != NULL) { printf("Ready list:\n"); while (acb) { osiop_dump_acb(acb); acb = TAILQ_NEXT(acb, chain); } } if ((acb = TAILQ_FIRST(&sc->nexus_list)) != NULL) { printf("Nexus list:\n"); while (acb) { osiop_dump_acb(acb); acb = TAILQ_NEXT(acb, chain); } } if (sc->sc_nexus) { printf("Nexus:\n"); osiop_dump_acb(sc->sc_nexus); } for (i = 0; i < OSIOP_NTGT; i++) { if (sc->sc_tinfo[i].cmds > 2) { printf("tgt %d: cmds %d disc %d lubusy %x\n", i, sc->sc_tinfo[i].cmds, sc->sc_tinfo[i].dconns, sc->sc_tinfo[i].lubusy); } } splx(s); } #endif