From d6583bb2a13f329cf0332ef2570eb8bb8fc0e39c Mon Sep 17 00:00:00 2001 From: Theo de Raadt Date: Wed, 18 Oct 1995 08:53:40 +0000 Subject: initial import of NetBSD tree --- sys/arch/amiga/dev/siop.c | 1585 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1585 insertions(+) create mode 100644 sys/arch/amiga/dev/siop.c (limited to 'sys/arch/amiga/dev/siop.c') diff --git a/sys/arch/amiga/dev/siop.c b/sys/arch/amiga/dev/siop.c new file mode 100644 index 00000000000..760a5d073e6 --- /dev/null +++ b/sys/arch/amiga/dev/siop.c @@ -0,0 +1,1585 @@ +/* $NetBSD: siop.c,v 1.25 1995/09/29 13:52:04 chopps Exp $ */ + +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 + */ + +/* + * AMIGA 53C710 scsi adaptor driver + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +extern u_int kvtop(); + +/* + * SCSI delays + * In u-seconds, primarily for state changes on the SPC. + */ +#define SCSI_CMD_WAIT 500000 /* wait per step of 'immediate' cmds */ +#define SCSI_DATA_WAIT 500000 /* wait per data in/out step */ +#define SCSI_INIT_WAIT 500000 /* wait per step (both) during init */ + +void siop_select __P((struct siop_softc *)); +void siopabort __P((struct siop_softc *, siop_regmap_p, char *)); +void sioperror __P((struct siop_softc *, siop_regmap_p, u_char)); +void siopstart __P((struct siop_softc *)); +void siopreset __P((struct siop_softc *)); +void siopsetdelay __P((int)); +void siop_scsidone __P((struct siop_acb *, int)); +void siop_sched __P((struct siop_softc *)); +int siop_poll __P((struct siop_softc *, struct siop_acb *)); +int siopintr __P((struct siop_softc *)); + +/* 53C710 script */ +const +#include + +/* default to not inhibit sync negotiation on any drive */ +u_char siop_inhibit_sync[8] = { 0, 0, 0, 0, 0, 0, 0 }; /* initialize, so patchable */ +u_char siop_allow_disc[8] = {3, 3, 3, 3, 3, 3, 3, 3}; +int siop_no_dma = 0; + +int siop_reset_delay = 250; /* delay after reset, in milleseconds */ + +int siop_cmd_wait = SCSI_CMD_WAIT; +int siop_data_wait = SCSI_DATA_WAIT; +int siop_init_wait = SCSI_INIT_WAIT; + +#ifdef DEBUG +/* + * sync period transfer lookup - only valid for 66Mhz clock + */ +static struct { + unsigned char p; /* period from sync request message */ + unsigned char 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 + +#ifdef DEBUG +/* + * 0x01 - full debug + * 0x02 - DMA chaining + * 0x04 - siopintr + * 0x08 - phase mismatch + * 0x10 - + * 0x20 - panic on unhandled exceptions + * 0x100 - disconnect/reselect + */ +int siop_debug = 0; +int siopsync_debug = 0; +int siopdma_hits = 0; +int siopdma_misses = 0; +int siopchain_ints = 0; +int siopstarts = 0; +int siopints = 0; +int siopphmm = 0; +#define SIOP_TRACE_SIZE 128 +#define SIOP_TRACE(a,b,c,d) \ + siop_trbuf[siop_trix] = (a); \ + siop_trbuf[siop_trix+1] = (b); \ + siop_trbuf[siop_trix+2] = (c); \ + siop_trbuf[siop_trix+3] = (d); \ + siop_trix = (siop_trix + 4) & (SIOP_TRACE_SIZE - 1); +u_char siop_trbuf[SIOP_TRACE_SIZE]; +int siop_trix; +void siop_dump __P((struct siop_softc *)); +void siop_dump_trace __P((void)); +#else +#define SIOP_TRACE(a,b,c,d) +#endif + + +/* + * default minphys routine for siop based controllers + */ +void +siop_minphys(bp) + struct buf *bp; +{ + + /* + * No max transfer at this level. + */ + minphys(bp); +} + +/* + * used by specific siop controller + * + */ +int +siop_scsicmd(xs) + struct scsi_xfer *xs; +{ + struct siop_acb *acb; + struct siop_softc *sc; + struct scsi_link *slp; + int flags, s, i; + + slp = xs->sc_link; + sc = slp->adapter_softc; + flags = xs->flags; + + /* XXXX ?? */ + if (flags & SCSI_DATA_UIO) + panic("siop: scsi data uio requested"); + + /* XXXX ?? */ + if (sc->sc_nexus && flags & SCSI_POLL) +/* panic("siop_scsicmd: busy");*/ + printf("siop_scsicmd: busy\n"); + + s = splbio(); + acb = sc->free_list.tqh_first; + if (acb) { + TAILQ_REMOVE(&sc->free_list, acb, chain); + } + splx(s); + + if (acb == NULL) { + xs->error = XS_DRIVER_STUFFUP; + return(TRY_AGAIN_LATER); + } + + acb->flags = ACB_ACTIVE; + acb->xs = xs; + bcopy(xs->cmd, &acb->cmd, xs->cmdlen); + acb->clen = xs->cmdlen; + acb->daddr = xs->data; + acb->dleft = xs->datalen; + + s = splbio(); + TAILQ_INSERT_TAIL(&sc->ready_list, acb, chain); + + if (sc->sc_nexus == NULL) + siop_sched(sc); + + splx(s); + + if (flags & SCSI_POLL || siop_no_dma) + return(siop_poll(sc, acb)); + return(SUCCESSFULLY_QUEUED); +} + +int +siop_poll(sc, acb) + struct siop_softc *sc; + struct siop_acb *acb; +{ + siop_regmap_p rp = sc->sc_siopp; + struct scsi_xfer *xs = acb->xs; + int i; + int status; + u_char istat; + u_char dstat; + u_char sstat0; + int s; + int to; + + s = splbio(); + to = xs->timeout / 1000; + if (sc->nexus_list.tqh_first) + printf("%s: siop_poll called with disconnected device\n", + sc->sc_dev.dv_xname); + for (;;) { + /* use cmd_wait values? */ + i = 50000; + spl0(); + while (((istat = rp->siop_istat) & + (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { + if (--i <= 0) { +#ifdef DEBUG + printf ("waiting: tgt %d cmd %02x sbcl %02x dsp %x (+%x) dcmd %x ds %x timeout %d\n", + xs->sc_link->target, acb->cmd.opcode, + rp->siop_sbcl, rp->siop_dsp, + rp->siop_dsp - sc->sc_scriptspa, + *((long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); +#endif + i = 50000; + --to; + if (to <= 0) { + siopreset(sc); + return(COMPLETE); + } + } + delay(10); + } + sstat0 = rp->siop_sstat0; + dstat = rp->siop_dstat; + if (siop_checkintr(sc, istat, dstat, sstat0, &status)) { + if (acb != sc->sc_nexus) + printf("%s: siop_poll disconnected device completed\n", + sc->sc_dev.dv_xname); + else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { + sc->sc_flags &= ~SIOP_INTSOFF; + rp->siop_sien = sc->sc_sien; + rp->siop_dien = sc->sc_dien; + } + siop_scsidone(sc->sc_nexus, status); + } + if (xs->flags & ITSDONE) + break; + } + splx(s); + return (COMPLETE); +} + +/* + * start next command that's ready + */ +void +siop_sched(sc) + struct siop_softc *sc; +{ + struct scsi_link *slp; + struct siop_acb *acb; + int stat, i; + +#ifdef DEBUG + if (sc->sc_nexus) { + printf("%s: siop_sched- nexus %x/%d ready %x/%d\n", + sc->sc_dev.dv_xname, sc->sc_nexus, + sc->sc_nexus->xs->sc_link->target, + sc->ready_list.tqh_first, + sc->ready_list.tqh_first->xs->sc_link->target); + return; + } +#endif + for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { + slp = acb->xs->sc_link; + i = slp->target; + if(!(sc->sc_tinfo[i].lubusy & (1 << slp->lun))) { + struct siop_tinfo *ti = &sc->sc_tinfo[i]; + + TAILQ_REMOVE(&sc->ready_list, acb, chain); + sc->sc_nexus = acb; + slp = acb->xs->sc_link; + ti = &sc->sc_tinfo[slp->target]; + ti->lubusy |= (1 << slp->lun); + break; + } + } + + if (acb == NULL) { +#ifdef DEBUGXXX + printf("%s: siop_sched didn't find ready command\n", + sc->sc_dev.dv_xname); +#endif + return; + } + + if (acb->xs->flags & SCSI_RESET) + siopreset(sc); + +#if 0 + acb->cmd.bytes[0] |= slp->lun << 5; /* XXXX */ +#endif + ++sc->sc_active; + siop_select(sc); +} + +void +siop_scsidone(acb, stat) + struct siop_acb *acb; + int stat; +{ + struct scsi_xfer *xs = acb->xs; + struct scsi_link *slp = xs->sc_link; + struct siop_softc *sc = slp->adapter_softc; + int s, dosched = 0; + +#ifdef DIAGNOSTIC + if (acb == NULL || xs == NULL) + panic("siop_scsidone"); +#endif + if (slp->device_softc && + ((struct device *)(slp->device_softc))->dv_unit < dk_ndrive) + ++dk_xfer[((struct device *)(slp->device_softc))->dv_unit]; + /* + * is this right? + */ + xs->status = stat; + + if (xs->error == XS_NOERROR && !(acb->flags & ACB_CHKSENSE)) { + if (stat == SCSI_CHECK) { + struct scsi_sense *ss = (void *)&acb->cmd; + bzero(ss, sizeof(*ss)); + ss->opcode = REQUEST_SENSE; + ss->byte2 = slp->lun << 5; + ss->length = sizeof(struct scsi_sense_data); + acb->clen = sizeof(*ss); + acb->daddr = (char *)&xs->sense; + acb->dleft = sizeof(struct scsi_sense_data); + acb->flags = ACB_ACTIVE | ACB_CHKSENSE; + TAILQ_INSERT_HEAD(&sc->ready_list, acb, chain); + --sc->sc_active; + sc->sc_tinfo[slp->target].lubusy &= + ~(1 << slp->lun); + sc->sc_tinfo[slp->target].senses++; + if (sc->sc_nexus == acb) { + sc->sc_nexus = NULL; + siop_sched(sc); + } + SIOP_TRACE('d','s',0,0) + return; + } + } + if (xs->error == XS_NOERROR && (acb->flags & ACB_CHKSENSE)) { + xs->error = XS_SENSE; + } else { + xs->resid = 0; /* XXXX */ + } +#if whataboutthisone + case SCSI_BUSY: + xs->error = XS_BUSY; + break; +#endif + xs->flags |= ITSDONE; + + /* + * 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[slp->target].lubusy &= ~(1<lun); + if (sc->ready_list.tqh_first) + dosched = 1; /* start next command */ + --sc->sc_active; + SIOP_TRACE('d','a',stat,0) + } else if (sc->ready_list.tqh_last == &acb->chain.tqe_next) { + TAILQ_REMOVE(&sc->ready_list, acb, chain); + SIOP_TRACE('d','r',stat,0) + } else { + register struct siop_acb *acb2; + for (acb2 = sc->nexus_list.tqh_first; acb2; + acb2 = acb2->chain.tqe_next) + if (acb2 == acb) { + TAILQ_REMOVE(&sc->nexus_list, acb, chain); + sc->sc_tinfo[slp->target].lubusy + &= ~(1<lun); + --sc->sc_active; + break; + } + if (acb2) + ; + else if (acb->chain.tqe_next) { + 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 +/* Debugger(); */ +#endif + } + SIOP_TRACE('d','n',stat,0); + } + /* Put it on the free list. */ + acb->flags = ACB_FREE; + TAILQ_INSERT_HEAD(&sc->free_list, acb, chain); + + sc->sc_tinfo[slp->target].cmds++; + + scsi_done(xs); + + if (dosched && sc->sc_nexus == NULL) + siop_sched(sc); +} + +void +siopabort(sc, rp, where) + register struct siop_softc *sc; + siop_regmap_p rp; + char *where; +{ + int i; + + printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", + sc->sc_dev.dv_xname, + where, rp->siop_dstat, rp->siop_sstat0, rp->siop_sbcl); + + if (sc->sc_active > 0) { +#ifdef TODO + SET_SBIC_cmd (rp, SBIC_CMD_ABORT); + WAIT_CIP (rp); + + GET_SBIC_asr (rp, asr); + if (asr & (SBIC_ASR_BSY|SBIC_ASR_LCI)) + { + /* ok, get more drastic.. */ + + SET_SBIC_cmd (rp, SBIC_CMD_RESET); + delay(25); + SBIC_WAIT(rp, SBIC_ASR_INT, 0); + GET_SBIC_csr (rp, csr); /* clears interrupt also */ + + return; + } + + do + { + SBIC_WAIT (rp, SBIC_ASR_INT, 0); + GET_SBIC_csr (rp, csr); + } + while ((csr != SBIC_CSR_DISC) && (csr != SBIC_CSR_DISC_1) + && (csr != SBIC_CSR_CMD_INVALID)); +#endif + + /* lets just hope it worked.. */ +#ifdef fix_this + for (i = 0; i < 2; ++i) { + if (sc->sc_iob[i].sc_xs && &sc->sc_iob[i] != + sc->sc_cur) { + printf ("siopabort: cleanup!\n"); + sc->sc_iob[i].sc_xs = NULL; + } + } +#endif /* fix_this */ +/* sc->sc_active = 0; */ + } +} + +void +siopinitialize(sc) + struct siop_softc *sc; +{ + /* + * Need to check that scripts is on a long word boundary + * and that DS is on a long word boundary. + * Also should verify that dev doesn't span non-contiguous + * physical pages. + */ + sc->sc_scriptspa = kvtop(scripts); + 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 = 0x80; /* SCLK/1 */ + sc->sc_tcp[0] = sc->sc_tcp[1]; + } else if (sc->sc_clock_freq <= 37) { + sc->sc_dcntl = 0x40; /* SCLK/1.5 */ + sc->sc_tcp[0] = sc->sc_tcp[2]; + } else if (sc->sc_clock_freq <= 50) { + sc->sc_dcntl = 0x00; /* SCLK/2 */ + sc->sc_tcp[0] = sc->sc_tcp[3]; + } else { + sc->sc_dcntl = 0xc0; /* SCLK/3 */ + sc->sc_tcp[0] = 3000 / sc->sc_clock_freq; + } + + siopreset (sc); +} + +void +siopreset(sc) + struct siop_softc *sc; +{ + siop_regmap_p rp; + u_int i, s; + u_char dummy; + struct siop_acb *acb; + + rp = sc->sc_siopp; + + if (sc->sc_flags & SIOP_ALIVE) + siopabort(sc, rp, "reset"); + + printf("%s: ", sc->sc_dev.dv_xname); /* XXXX */ + + s = splbio(); + + /* + * Reset the chip + * XXX - is this really needed? + */ + rp->siop_istat |= SIOP_ISTAT_ABRT; /* abort current script */ + rp->siop_istat |= SIOP_ISTAT_RST; /* reset chip */ + rp->siop_istat &= ~SIOP_ISTAT_RST; + /* + * Reset SCSI bus (do we really want this?) + */ + rp->siop_sien = 0; + rp->siop_scntl1 |= SIOP_SCNTL1_RST; + delay(1); + rp->siop_scntl1 &= ~SIOP_SCNTL1_RST; + + /* + * Set up various chip parameters + */ + rp->siop_scntl0 = SIOP_ARB_FULL | SIOP_SCNTL0_EPC | SIOP_SCNTL0_EPG; + rp->siop_scntl1 = SIOP_SCNTL1_ESR; + rp->siop_dcntl = sc->sc_dcntl; + rp->siop_dmode = 0x80; /* burst length = 4 */ + rp->siop_sien = 0x00; /* don't enable interrupts yet */ + rp->siop_dien = 0x00; /* don't enable interrupts yet */ + rp->siop_scid = 1 << sc->sc_link.adapter_target; + rp->siop_dwt = 0x00; + rp->siop_ctest0 |= SIOP_CTEST0_BTD | SIOP_CTEST0_EAN; + rp->siop_ctest7 |= sc->sc_ctest7; + + /* will need to re-negotiate sync xfers */ + bzero(&sc->sc_sync, sizeof (sc->sc_sync)); + + i = rp->siop_istat; + if (i & SIOP_ISTAT_SIP) + dummy = rp->siop_sstat0; + if (i & SIOP_ISTAT_DIP) + dummy = rp->siop_dstat; + + splx (s); + + delay (siop_reset_delay * 1000); + printf("siop id %d reset V%d\n", sc->sc_link.adapter_target, + rp->siop_ctest8 >> 4); + + if ((sc->sc_flags & SIOP_ALIVE) == 0) { + TAILQ_INIT(&sc->ready_list); + TAILQ_INIT(&sc->nexus_list); + TAILQ_INIT(&sc->free_list); + sc->sc_nexus = NULL; + acb = sc->sc_acb; + bzero(acb, sizeof(sc->sc_acb)); + for (i = 0; i < sizeof(sc->sc_acb) / sizeof(*acb); i++) { + TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); + acb++; + } + bzero(sc->sc_tinfo, sizeof(sc->sc_tinfo)); + } else { + if (sc->sc_nexus != NULL) { + sc->sc_nexus->xs->error = XS_DRIVER_STUFFUP; + siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); + } + while (acb = sc->nexus_list.tqh_first) { + acb->xs->error = XS_DRIVER_STUFFUP; + siop_scsidone(acb, acb->stat[0]); + } + } + + sc->sc_flags |= SIOP_ALIVE; + sc->sc_flags &= ~(SIOP_INTDEFER|SIOP_INTSOFF); + /* enable SCSI and DMA interrupts */ + sc->sc_sien = SIOP_SIEN_M_A | SIOP_SIEN_STO | /*SIOP_SIEN_SEL |*/ SIOP_SIEN_SGE | + SIOP_SIEN_UDC | SIOP_SIEN_RST | SIOP_SIEN_PAR; + sc->sc_dien = SIOP_DIEN_BF | SIOP_DIEN_ABRT | SIOP_DIEN_SIR | + /*SIOP_DIEN_WTD |*/ SIOP_DIEN_IID; + rp->siop_sien = sc->sc_sien; + rp->siop_dien = sc->sc_dien; +} + +/* + * Setup Data Storage for 53C710 and start SCRIPTS processing + */ + +void +siop_start (sc, target, lun, cbuf, clen, buf, len) + struct siop_softc *sc; + int target; + int lun; + u_char *cbuf; + int clen; + u_char *buf; + int len; +{ + siop_regmap_p rp = sc->sc_siopp; + int i; + int nchain; + int count, tcount; + char *addr, *dmaend; + struct siop_acb *acb = sc->sc_nexus; + +#ifdef DEBUG + if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { + printf ("ACK! siop was busy: rp %x script %x dsa %x active %d\n", + rp, &scripts, &acb->ds, sc->sc_active); + printf ("istat %02x sfbr %02x lcrc %02x sien %02x dien %02x\n", + rp->siop_istat, rp->siop_sfbr, rp->siop_lcrc, + rp->siop_sien, rp->siop_dien); +#ifdef DDB + /*Debugger();*/ +#endif + } +#endif + acb->msgout[0] = MSG_IDENTIFY | lun; + if (siop_allow_disc[target] & 2 || + (siop_allow_disc[target] && len == 0)) + acb->msgout[0] = MSG_IDENTIFY_DR | lun; + acb->status = 0; + acb->stat[0] = -1; + acb->msg[0] = -1; + acb->ds.scsi_addr = (0x10000 << target) | (sc->sc_sync[target].sxfer << 8); + acb->ds.idlen = 1; + acb->ds.idbuf = (char *) kvtop(&acb->msgout[0]); + acb->ds.cmdlen = clen; + acb->ds.cmdbuf = (char *) kvtop(cbuf); + acb->ds.stslen = 1; + acb->ds.stsbuf = (char *) kvtop(&acb->stat[0]); + acb->ds.msglen = 1; + acb->ds.msgbuf = (char *) kvtop(&acb->msg[0]); + acb->msg[1] = -1; + acb->ds.msginlen = 1; + acb->ds.extmsglen = 1; + acb->ds.synmsglen = 3; + acb->ds.msginbuf = (char *) kvtop(&acb->msg[1]); + acb->ds.extmsgbuf = (char *) kvtop(&acb->msg[2]); + acb->ds.synmsgbuf = (char *) kvtop(&acb->msg[3]); + bzero(&acb->ds.chain, sizeof (acb->ds.chain)); + + if (sc->sc_sync[target].state == SYNC_START) { + if (siop_inhibit_sync[target]) { + sc->sc_sync[target].state = SYNC_DONE; + sc->sc_sync[target].sbcl = 0; + sc->sc_sync[target].sxfer = 0; +#ifdef DEBUG + if (siopsync_debug) + printf ("Forcing target %d asynchronous\n", target); +#endif + } + else { + acb->msg[2] = -1; + acb->msgout[1] = MSG_EXT_MESSAGE; + acb->msgout[2] = 3; + acb->msgout[3] = MSG_SYNC_REQ; +#ifdef MAXTOR_SYNC_KLUDGE + acb->msgout[4] = 50 / 4; /* ask for ridiculous period */ +#else + acb->msgout[4] = sc->sc_minsync; +#endif + acb->msgout[5] = SIOP_MAX_OFFSET; + acb->ds.idlen = 6; + sc->sc_sync[target].state = SYNC_SENT; +#ifdef DEBUG + if (siopsync_debug) + printf ("Sending sync request to target %d\n", target); +#endif + } + } + +/* + * Build physical DMA addresses for scatter/gather I/O + */ + acb->iob_buf = buf; + acb->iob_len = len; + acb->iob_curbuf = acb->iob_curlen = 0; + nchain = 0; + count = len; + addr = buf; + dmaend = NULL; + while (count > 0) { + acb->ds.chain[nchain].databuf = (char *) kvtop (addr); + if (count < (tcount = NBPG - ((int) addr & PGOFSET))) + tcount = count; + acb->ds.chain[nchain].datalen = tcount; + addr += tcount; + count -= tcount; + if (acb->ds.chain[nchain].databuf == dmaend) { + dmaend += acb->ds.chain[nchain].datalen; + acb->ds.chain[nchain].datalen = 0; + acb->ds.chain[--nchain].datalen += tcount; +#ifdef DEBUG + ++siopdma_hits; +#endif + } + else { + dmaend = acb->ds.chain[nchain].databuf + + acb->ds.chain[nchain].datalen; + acb->ds.chain[nchain].datalen = tcount; +#ifdef DEBUG + if (nchain) /* Don't count miss on first one */ + ++siopdma_misses; +#endif + } + ++nchain; + } +#ifdef DEBUG + if (nchain != 1 && len != 0 && siop_debug & 3) { + printf ("DMA chaining set: %d\n", nchain); + for (i = 0; i < nchain; ++i) { + printf (" [%d] %8x %4x\n", i, acb->ds.chain[i].databuf, + acb->ds.chain[i].datalen); + } + } +#endif + + /* push data cache for all data the 53c710 needs to access */ + dma_cachectl (sc, sizeof (struct siop_softc)); + dma_cachectl (cbuf, clen); + if (buf != NULL && len != 0) + dma_cachectl (buf, len); +#ifdef DEBUG + if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { + printf ("ACK! siop was busy at start: rp %x script %x dsa %x active %d\n", + rp, &scripts, &acb->ds, sc->sc_active); +#ifdef DDB + /*Debugger();*/ +#endif + } +#endif + if (sc->nexus_list.tqh_first == NULL) { + if (rp->siop_istat & SIOP_ISTAT_CON) + printf("%s: siop_select while connected?\n", + sc->sc_dev.dv_xname); + rp->siop_temp = 0; + rp->siop_sbcl = sc->sc_sync[target].sbcl; + rp->siop_dsa = kvtop(&acb->ds); + rp->siop_dsp = sc->sc_scriptspa; + SIOP_TRACE('s',1,0,0) + } else { + if ((rp->siop_istat & SIOP_ISTAT_CON) == 0) { + rp->siop_istat = SIOP_ISTAT_SIGP; + SIOP_TRACE('s',2,0,0); + } + else { + SIOP_TRACE('s',3,rp->siop_istat,0); + } + } +#ifdef DEBUG + ++siopstarts; +#endif +} + +/* + * Process a DMA or SCSI interrupt from the 53C710 SIOP + */ + +int +siop_checkintr(sc, istat, dstat, sstat0, status) + struct siop_softc *sc; + u_char istat; + u_char dstat; + u_char sstat0; + int *status; +{ + siop_regmap_p rp = sc->sc_siopp; + struct siop_acb *acb = sc->sc_nexus; + int target; + int dfifo, dbc, sstat1; + + dfifo = rp->siop_dfifo; + dbc = rp->siop_dbc0; + sstat1 = rp->siop_sstat1; + rp->siop_ctest8 |= SIOP_CTEST8_CLF; + while ((rp->siop_ctest1 & SIOP_CTEST1_FMT) != SIOP_CTEST1_FMT) + ; + rp->siop_ctest8 &= ~SIOP_CTEST8_CLF; +#ifdef DEBUG + ++siopints; +#if 0 + if (siop_debug & 0x100) { + DCIAS(&acb->stat[0]); /* XXX */ + printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", + istat, dstat, sstat0, rp->siop_dsps, rp->siop_sbcl, acb->stat[0], acb->msg[0]); + printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", + acb->msg[0], acb->msg[1], acb->msg[2], + acb->msg[3], acb->msg[4], acb->msg[5]); + } +#endif + if (rp->siop_dsp && (rp->siop_dsp < sc->sc_scriptspa || + rp->siop_dsp >= sc->sc_scriptspa + sizeof(scripts))) { + printf ("%s: dsp not within script dsp %x scripts %x:%x", + sc->sc_dev.dv_xname, rp->siop_dsp, sc->sc_scriptspa, + sc->sc_scriptspa + sizeof(scripts)); + printf(" istat %x dstat %x sstat0 %x\n", + istat, dstat, sstat0); + Debugger(); + } +#endif + SIOP_TRACE('i',dstat,istat,(istat&SIOP_ISTAT_DIP)?rp->siop_dsps&0xff:sstat0); + if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff00) { + /* Normal completion status, or check condition */ +#ifdef DEBUG + if (rp->siop_dsa != kvtop(&acb->ds)) { + printf ("siop: invalid dsa: %x %x\n", rp->siop_dsa, + kvtop(&acb->ds)); + panic("*** siop DSA invalid ***"); + } +#endif + target = acb->xs->sc_link->target; + if (sc->sc_sync[target].state == SYNC_SENT) { +#ifdef DEBUG + if (siopsync_debug) + printf ("sync msg in: %02x %02x %02x %02x %02x %02x\n", + acb->msg[0], acb->msg[1], acb->msg[2], + acb->msg[3], acb->msg[4], acb->msg[5]); +#endif + if (acb->msg[1] == 0xff) + printf ("%s: target %d ignored sync request\n", + sc->sc_dev.dv_xname, target); + else if (acb->msg[1] == MSG_REJECT) + printf ("%s: target %d rejected sync request\n", + sc->sc_dev.dv_xname, target); + sc->sc_sync[target].state = SYNC_DONE; + sc->sc_sync[target].sxfer = 0; + sc->sc_sync[target].sbcl = 0; + if (acb->msg[2] == 3 && + acb->msg[3] == MSG_SYNC_REQ && + acb->msg[5] != 0) { +#ifdef MAXTOR_KLUDGE + /* + * Kludge for my Maxtor XT8580S + * It accepts whatever we request, even + * though it won't work. So we ask for + * a short period than we can handle. If + * the device says it can do it, use 208ns. + * If the device says it can do less than + * 100ns, then we limit it to 100ns. + */ + if (acb->msg[4] && acb->msg[4] < 100 / 4) { +#ifdef DEBUG + printf ("%d: target %d wanted %dns period\n", + sc->sc_dev.dv_xname, target, + acb->msg[4] * 4); +#endif + if (acb->msg[4] == 50 / 4) + acb->msg[4] = 208 / 4; + else + acb->msg[4] = 100 / 4; + } +#endif /* MAXTOR_KLUDGE */ + printf ("%s: target %d now synchronous, period=%dns, offset=%d\n", + sc->sc_dev.dv_xname, target, + acb->msg[4] * 4, acb->msg[5]); + scsi_period_to_siop (sc, target); + } + } + dma_cachectl(&acb->stat[0], 1); + *status = acb->stat[0]; +#ifdef DEBUG + if (rp->siop_sbcl & SIOP_BSY) { + /*printf ("ACK! siop was busy at end: rp %x script %x dsa %x\n", + rp, &scripts, &acb->ds);*/ +#ifdef DDB + /*Debugger();*/ +#endif + } + if (acb->msg[0] != 0x00) + printf("%s: message was not COMMAND COMPLETE: %x\n", + sc->sc_dev.dv_xname, acb->msg[0]); +#endif + if (sc->nexus_list.tqh_first) + rp->siop_dcntl |= SIOP_DCNTL_STD; + return 1; + } + if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ +#ifdef DEBUG + ++siopphmm; + if (acb == NULL) + printf("%s: Phase mismatch with no active command?\n", + sc->sc_dev.dv_xname); +#endif + if (acb->iob_len) { + int adjust; + adjust = ((dfifo - (dbc & 0x7f)) & 0x7f); + if (sstat1 & SIOP_SSTAT1_ORF) + ++adjust; + if (sstat1 & SIOP_SSTAT1_OLF) + ++adjust; + acb->iob_curlen = *((long *)&rp->siop_dcmd) & 0xffffff; + acb->iob_curlen += adjust; + acb->iob_curbuf = *((long *)&rp->siop_dnad) - adjust; +#ifdef DEBUG + if (siop_debug & 0x100) { + int i; + printf ("Phase mismatch: curbuf %x curlen %x dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %x\n", + acb->iob_curbuf, acb->iob_curlen, dfifo, + dbc, sstat1, adjust, rp->siop_sbcl, siopstarts, acb); + if (acb->ds.chain[1].datalen) { + for (i = 0; acb->ds.chain[i].datalen; ++i) + printf("chain[%d] addr %x len %x\n", + i, acb->ds.chain[i].databuf, + acb->ds.chain[i].datalen); + } + } +#endif + dma_cachectl (acb, sizeof(*acb)); + } +#ifdef DEBUG + SIOP_TRACE('m',rp->siop_sbcl,(rp->siop_dsp>>8),rp->siop_dsp); + if (siop_debug & 9) + printf ("Phase mismatch: %x dsp +%x dcmd %x\n", + rp->siop_sbcl, + rp->siop_dsp - sc->sc_scriptspa, + *((long *)&rp->siop_dcmd)); +#endif + if ((rp->siop_sbcl & SIOP_REQ) == 0) { + printf ("Phase mismatch: REQ not asserted! %02x dsp %x\n", + rp->siop_sbcl, rp->siop_dsp); +#ifdef DEBUG + Debugger(); +#endif + } + switch (rp->siop_sbcl & 7) { + case 0: /* data out */ + case 1: /* data in */ + case 2: /* status */ + case 3: /* command */ + case 6: /* message in */ + case 7: /* message out */ + rp->siop_dsp = sc->sc_scriptspa + Ent_switch; + break; + default: + goto bad_phase; + } + return 0; + } + if (sstat0 & SIOP_SSTAT0_STO) { /* Select timed out */ +#ifdef DEBUG + if (acb == NULL) + printf("%s: Select timeout with no active command?\n", + sc->sc_dev.dv_xname); + if (rp->siop_sbcl & SIOP_BSY) { + printf ("ACK! siop was busy at timeout: rp %x script %x dsa %x\n", + rp, &scripts, &acb->ds); + printf(" sbcl %x sdid %x istat %x dstat %x sstat0 %x\n", + rp->siop_sbcl, rp->siop_sdid, istat, dstat, sstat0); + if (!(rp->siop_sbcl & SIOP_BSY)) { + printf ("Yikes, it's not busy now!\n"); +#if 0 + *status = -1; + if (sc->nexus_list.tqh_first) + rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; + return 1; +#endif + } +/* rp->siop_dcntl |= SIOP_DCNTL_STD;*/ + return (0); +#ifdef DDB + Debugger(); +#endif + } +#endif + *status = -1; + acb->xs->error = XS_SELTIMEOUT; + if (sc->nexus_list.tqh_first) + rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; + return 1; + } + if (acb) + target = acb->xs->sc_link->target; + else + target = 7; + if (sstat0 & SIOP_SSTAT0_UDC) { +#ifdef 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 + siopabort (sc, rp, "siopchkintr"); +#endif + *status = STS_BUSY; + if (sc->nexus_list.tqh_first) + rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; + return 1; + } + if (dstat & SIOP_DSTAT_SIR && (rp->siop_dsps == 0xff01 || + rp->siop_dsps == 0xff02)) { +#ifdef DEBUG + if (siop_debug & 0x100) + printf ("%s: ID %02x disconnected TEMP %x (+%x) curbuf %x curlen %x buf %x len %x dfifo %x dbc %x sstat1 %x starts %d acb %x\n", + sc->sc_dev.dv_xname, 1 << target, rp->siop_temp, + rp->siop_temp ? rp->siop_temp - sc->sc_scriptspa : 0, + acb->iob_curbuf, acb->iob_curlen, + acb->ds.chain[0].databuf, acb->ds.chain[0].datalen, dfifo, dbc, sstat1, siopstarts, acb); +#endif + if (acb == NULL) { + printf("%s: Disconnect with no active command?\n", + sc->sc_dev.dv_xname); + return (0); + } + /* + * XXXX need to update iob_curbuf/iob_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->iob_len && rp->siop_temp) { + int n = rp->siop_temp - sc->sc_scriptspa; + + if (acb->iob_curlen && acb->iob_curlen != acb->ds.chain[0].datalen) + printf("%s: iob_curbuf/len already set? n %x iob %x/%x chain[0] %x/%x\n", + sc->sc_dev.dv_xname, n, acb->iob_curbuf, acb->iob_curlen, + acb->ds.chain[0].databuf, acb->ds.chain[0].datalen); + if (n < Ent_datain) + n = (n - Ent_dataout) / 16; + else + n = (n - Ent_datain) / 16; + if (n <= 0 && n > DMAMAXIO) + printf("TEMP invalid %d\n", n); + else { + acb->iob_curbuf = (u_long)acb->ds.chain[n].databuf; + acb->iob_curlen = acb->ds.chain[n].datalen; + } +#ifdef DEBUG + if (siop_debug & 0x100) { + printf("%s: TEMP offset %d", sc->sc_dev.dv_xname, n); + printf(" curbuf %x curlen %x\n", acb->iob_curbuf, + acb->iob_curlen); + } +#endif + } + /* + * If data transfer was interrupted by disconnect, iob_curbuf + * and iob_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->iob_curlen) { + int i, j; + +#ifdef DEBUG + if (siop_debug & 0x100) + printf ("%s: adjusting DMA chain\n", + sc->sc_dev.dv_xname); + if (rp->siop_dsps == 0xff02) + printf ("%s: ID %02x disconnected without Save Data Pointers\n", + sc->sc_dev.dv_xname, 1 << target); +#endif + for (i = 0; i < DMAMAXIO; ++i) { + if (acb->ds.chain[i].datalen == 0) + break; + if (acb->iob_curbuf >= (long)acb->ds.chain[i].databuf && + acb->iob_curbuf < (long)(acb->ds.chain[i].databuf + + acb->ds.chain[i].datalen)) + break; + } + if (i >= DMAMAXIO || acb->ds.chain[i].datalen == 0) + printf("couldn't find saved data pointer\n"); +#ifdef DEBUG + if (siop_debug & 0x100) + printf(" chain[0]: %x/%x -> %x/%x\n", + acb->ds.chain[0].databuf, + acb->ds.chain[0].datalen, + acb->iob_curbuf, + acb->iob_curlen); +#endif + acb->ds.chain[0].databuf = (char *)acb->iob_curbuf; + acb->ds.chain[0].datalen = acb->iob_curlen; + for (j = 1, ++i; i < DMAMAXIO && acb->ds.chain[i].datalen; ++i, ++j) { +#ifdef DEBUG + if (siop_debug & 0x100) + printf(" chain[%d]: %x/%x -> %x/%x\n", j, + acb->ds.chain[j].databuf, + acb->ds.chain[j].datalen, + acb->ds.chain[i].databuf, + acb->ds.chain[i].datalen); +#endif + acb->ds.chain[j].databuf = acb->ds.chain[i].databuf; + acb->ds.chain[j].datalen = acb->ds.chain[i].datalen; + } + if (j < DMAMAXIO) + acb->ds.chain[j].datalen = 0; + DCIAS(kvtop(&acb->ds.chain)); + } + ++sc->sc_tinfo[target].dconns; + /* + * add nexus to waiting list + * clear nexus + * try to start another command for another target/lun + */ + acb->status = sc->sc_flags & SIOP_INTSOFF; + TAILQ_INSERT_HEAD(&sc->nexus_list, acb, chain); + sc->sc_nexus = NULL; /* no current device */ + /* start script to wait for reselect */ + if (sc->sc_nexus == NULL) + rp->siop_dsp = sc->sc_scriptspa + Ent_wait_reselect; +/* XXXX start another command ? */ + if (sc->ready_list.tqh_first) + siop_sched(sc); + return (0); + } + if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff03) { + int reselid = rp->siop_scratch & 0x7f; + int reselun = rp->siop_sfbr & 0x07; + + sc->sc_sstat1 = rp->siop_sbcl; /* XXXX save current SBCL */ +#ifdef DEBUG + if (siop_debug & 0x100) + printf ("%s: target ID %02x reselected dsps %x\n", + sc->sc_dev.dv_xname, reselid, + rp->siop_dsps); + if ((rp->siop_sfbr & 0x80) == 0) + printf("%s: Reselect message in was not identify: %x\n", + sc->sc_dev.dv_xname, rp->siop_sfbr); +#endif + if (sc->sc_nexus) { +#ifdef DEBUG + if (siop_debug & 0x100) + 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[sc->sc_nexus->xs->sc_link->target].lubusy + &= ~(1 << sc->sc_nexus->xs->sc_link->lun); + --sc->sc_active; + } + /* + * locate acb of reselecting device + * set sc->sc_nexus to acb + */ + for (acb = sc->nexus_list.tqh_first; acb; + acb = acb->chain.tqe_next) { + if (reselid != (acb->ds.scsi_addr >> 16) || + reselun != (acb->msgout[0] & 0x07)) + continue; + TAILQ_REMOVE(&sc->nexus_list, acb, chain); + sc->sc_nexus = acb; + sc->sc_flags |= acb->status; + acb->status = 0; + DCIAS(kvtop(&acb->stat[0])); + rp->siop_dsa = kvtop(&acb->ds); + rp->siop_sxfer = sc->sc_sync[acb->xs->sc_link->target].sxfer; + rp->siop_sbcl = sc->sc_sync[acb->xs->sc_link->target].sbcl; + break; + } + if (acb == NULL) { + printf("%s: target ID %02x reselect nexus_list %x\n", + sc->sc_dev.dv_xname, reselid, + sc->nexus_list.tqh_first); + panic("unable to find reselecting device"); + } + dma_cachectl (acb, sizeof(*acb)); + rp->siop_temp = 0; + rp->siop_dcntl |= SIOP_DCNTL_STD; + return (0); + } + if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { + u_short ctest2 = rp->siop_ctest2; + + /* reselect was interrupted (by Sig_P or select) */ +#ifdef DEBUG + if (siop_debug & 0x100 || + (ctest2 & SIOP_CTEST2_SIGP) == 0) + printf ("%s: reselect interrupted (Sig_P?) scntl1 %x ctest2 %x sfbr %x istat %x/%x\n", + sc->sc_dev.dv_xname, rp->siop_scntl1, + ctest2, rp->siop_sfbr, istat, rp->siop_istat); +#endif + /* XXX assumes it was not select */ + if (sc->sc_nexus == NULL) { + printf("%s: reselect interrupted, sc_nexus == NULL\n", + sc->sc_dev.dv_xname); +#if 0 + siop_dump(sc); +#ifdef DDB + Debugger(); +#endif +#endif + rp->siop_dcntl |= SIOP_DCNTL_STD; + return(0); + } + target = sc->sc_nexus->xs->sc_link->target; + rp->siop_temp = 0; + rp->siop_dsa = kvtop(&sc->sc_nexus->ds); + rp->siop_sxfer = sc->sc_sync[target].sxfer; + rp->siop_sbcl = sc->sc_sync[target].sbcl; + rp->siop_dsp = sc->sc_scriptspa; + return (0); + } + if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff06) { + if (acb == NULL) + printf("%s: Bad message-in with no active command?\n", + sc->sc_dev.dv_xname); + /* Unrecognized message in byte */ + dma_cachectl (&acb->msg[1],1); + printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", + sc->sc_dev.dv_xname, rp->siop_sfbr, acb->msg[1], rp->siop_sbcl); + /* what should be done here? */ + DCIAS(kvtop(&acb->msg[1])); + rp->siop_dsp = sc->sc_scriptspa + Ent_switch; + return (0); + } + if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0a) { + /* 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, rp->siop_sbcl, rp->siop_sbdl); + if (rp->siop_sbcl == 0xa7) { + /* It is now, just continue the script? */ + rp->siop_dcntl |= SIOP_DCNTL_STD; + return (0); + } + } + if (sstat0 == 0 && dstat & SIOP_DSTAT_SIR) { + dma_cachectl (&acb->stat[0], 1); + dma_cachectl (&acb->msg[0], 1); + printf ("SIOP interrupt: %x sts %x msg %x %x sbcl %x\n", + rp->siop_dsps, acb->stat[0], acb->msg[0], acb->msg[1], + rp->siop_sbcl); + siopreset (sc); + *status = -1; + return 0; /* siopreset has cleaned up */ + } + if (sstat0 & SIOP_SSTAT0_SGE) + printf ("SIOP: SCSI Gross Error\n"); + if (sstat0 & SIOP_SSTAT0_PAR) + printf ("SIOP: Parity Error\n"); + if (dstat & SIOP_DSTAT_IID) + printf ("SIOP: Invalid instruction detected\n"); +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 ("siopchkintr: target %x ds %x\n", target, &acb->ds); + printf ("scripts %x ds %x rp %x dsp %x dcmd %x\n", sc->sc_scriptspa, + kvtop(&acb->ds), kvtop(rp), rp->siop_dsp, + *((long *)&rp->siop_dcmd)); + printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %x dsa %x sbcl %x sts %x msg %x %x sfbr %x\n", + istat, dstat, sstat0, rp->siop_dsps, rp->siop_dsa, + rp->siop_sbcl, acb->stat[0], acb->msg[0], acb->msg[1], rp->siop_sfbr); +#ifdef DEBUG + if (siop_debug & 0x20) + panic("siopchkintr: **** temp ****"); +#endif +#ifdef DDB + Debugger (); +#endif + siopreset (sc); /* hard reset */ + *status = -1; + return 0; /* siopreset cleaned up */ +} + +void +siop_select(sc) + struct siop_softc *sc; +{ + siop_regmap_p rp; + struct siop_acb *acb = sc->sc_nexus; + +#ifdef DEBUG + if (siop_debug & 1) + printf ("%s: select ", sc->sc_dev.dv_xname); +#endif + + rp = sc->sc_siopp; + if (acb->xs->flags & SCSI_POLL || siop_no_dma) { + sc->sc_flags |= SIOP_INTSOFF; + sc->sc_flags &= ~SIOP_INTDEFER; + if ((rp->siop_istat & 0x08) == 0) { + rp->siop_sien = 0; + rp->siop_dien = 0; + } +#if 0 + } else if ((sc->sc_flags & SIOP_INTDEFER) == 0) { + sc->sc_flags &= ~SIOP_INTSOFF; + if ((rp->siop_istat & 0x08) == 0) { + rp->siop_sien = sc->sc_sien; + rp->siop_dien = sc->sc_dien; + } +#endif + } +#ifdef DEBUG + if (siop_debug & 1) + printf ("siop_select: target %x cmd %02x ds %x\n", + acb->xs->sc_link->target, acb->cmd.opcode, + &sc->sc_nexus->ds); +#endif + + siop_start(sc, acb->xs->sc_link->target, acb->xs->sc_link->lun, + &acb->cmd, acb->clen, acb->daddr, acb->dleft); + + return; +} + +/* + * 53C710 interrupt handler + */ + +int +siopintr (sc) + register struct siop_softc *sc; +{ + siop_regmap_p rp; + register u_char istat, dstat, sstat0; + int status; + int s = splbio(); + + istat = sc->sc_istat; + if ((istat & (SIOP_ISTAT_SIP | SIOP_ISTAT_DIP)) == 0) { + splx(s); + return; + } + + /* Got a valid interrupt on this device */ + rp = sc->sc_siopp; + dstat = sc->sc_dstat; + sstat0 = sc->sc_sstat0; + if (dstat & SIOP_DSTAT_SIR) + sc->sc_intcode = rp->siop_dsps; + sc->sc_istat = 0; +#ifdef DEBUG + if (siop_debug & 1) + printf ("%s: intr istat %x dstat %x sstat0 %x\n", + sc->sc_dev.dv_xname, istat, dstat, sstat0); + if (!sc->sc_active) { + printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x status %x\n", + sc->sc_dev.dv_xname, istat, dstat, sstat0, sc->sc_nexus->stat[0]); + } +#endif + +#ifdef DEBUG + if (siop_debug & 5) { + DCIAS(kvtop(&sc->sc_nexus->stat[0])); + printf ("%s: intr istat %x dstat %x sstat0 %x dsps %x sbcl %x sts %x msg %x\n", + sc->sc_dev.dv_xname, istat, dstat, sstat0, + rp->siop_dsps, rp->siop_sbcl, + sc->sc_nexus->stat[0], sc->sc_nexus->msg[0]); + } +#endif + if (sc->sc_flags & SIOP_INTDEFER) { + sc->sc_flags &= ~(SIOP_INTDEFER | SIOP_INTSOFF); + rp->siop_sien = sc->sc_sien; + rp->siop_dien = sc->sc_dien; + } + if (siop_checkintr (sc, istat, dstat, sstat0, &status)) { +#if 1 + if (status == 0xff) + printf ("siopintr: status == 0xff\n"); +#endif + if ((sc->sc_flags & (SIOP_INTSOFF | SIOP_INTDEFER)) != SIOP_INTSOFF) { +#if 0 + if (rp->siop_sbcl & SIOP_BSY) { + printf ("%s: SCSI bus busy at completion", + sc->sc_dev.dv_xname); + printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", + sc->sc_nexus->xs->sc_link->target, + rp->siop_sbcl, rp->siop_sfbr, rp->siop_lcrc, + rp->siop_dsp - sc->sc_scriptspa); + } +#endif + siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); + } + } + splx(s); +} + +/* + * This is based on the Progressive Peripherals 33Mhz Zeus driver and will + * not be correct for other 53c710 boards. + * + */ +scsi_period_to_siop (sc, target) + struct siop_softc *sc; +{ + int period, offset, i, sxfer, sbcl; + + period = sc->sc_nexus->msg[4]; + offset = sc->sc_nexus->msg[5]; +#ifdef DEBUG + sxfer = 0; + if (offset <= SIOP_MAX_OFFSET) + sxfer = offset; + for (i = 0; i < sizeof (sync_tab) / 2; ++i) { + if (period <= sync_tab[i].p) { + sxfer |= sync_tab[i].r & 0x70; + sbcl = sync_tab[i].r & 0x03; + break; + } + } + printf ("siop sync old: siop_sxfr %02x, siop_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("siop sync: unable to compute sync params for period %dns\n", + period * 4); + /* + * XXX need to pick a value we can do and renegotiate + */ + sxfer = sbcl = 0; + } else { + sxfer = (sxfer << 4) | ((offset <= SIOP_MAX_OFFSET) ? + offset : SIOP_MAX_OFFSET); + printf("siop 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)); + } + sc->sc_sync[target].sxfer = sxfer; + sc->sc_sync[target].sbcl = sbcl; +#ifdef DEBUG + printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); +#endif +} + +#ifdef DEBUG + +#if SIOP_TRACE_SIZE +void +siop_dump_trace() +{ + int i; + + printf("siop trace: next index %d\n", siop_trix); + i = siop_trix; + do { + printf("%3d: '%c' %02x %02x %02x\n", i, siop_trbuf[i], + siop_trbuf[i + 1], siop_trbuf[i + 2], siop_trbuf[i + 3]); + i = (i + 4) & (SIOP_TRACE_SIZE - 1); + } while (i != siop_trix); +} +#endif + +void +siop_dump_acb(acb) + struct siop_acb *acb; +{ + u_char *b = (u_char *) &acb->cmd; + int i; + + printf("acb@%x ", acb); + if (acb->xs == NULL) { + printf("\n"); + return; + } + printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->sc_link->target, + acb->xs->sc_link->lun, acb->flags, acb->clen); + for (i = acb->clen; i; --i) + printf(" %02x", *b++); + printf("\n"); + printf(" xs: %08x data %8x:%04x ", acb->xs, acb->xs->data, + acb->xs->datalen); + printf("va %8x:%04x ", acb->iob_buf, acb->iob_len); + printf("cur %8x:%04x\n", acb->iob_curbuf, acb->iob_curlen); +} + +void +siop_dump(sc) + struct siop_softc *sc; +{ + struct siop_acb *acb; + siop_regmap_p rp = sc->sc_siopp; + int s; + int i; + + s = splbio(); +#if SIOP_TRACE_SIZE + siop_dump_trace(); +#endif + printf("%s@%x regs %x istat %x\n", + sc->sc_dev.dv_xname, sc, rp, rp->siop_istat); + if (acb = sc->free_list.tqh_first) { + printf("Free list:\n"); + while (acb) { + siop_dump_acb(acb); + acb = acb->chain.tqe_next; + } + } + if (acb = sc->ready_list.tqh_first) { + printf("Ready list:\n"); + while (acb) { + siop_dump_acb(acb); + acb = acb->chain.tqe_next; + } + } + if (acb = sc->nexus_list.tqh_first) { + printf("Nexus list:\n"); + while (acb) { + siop_dump_acb(acb); + acb = acb->chain.tqe_next; + } + } + if (sc->sc_nexus) { + printf("Nexus:\n"); + siop_dump_acb(sc->sc_nexus); + } + for (i = 0; i < 8; ++i) { + if (sc->sc_tinfo[i].cmds > 2) { + printf("tgt %d: cmds %d disc %d senses %d lubusy %x\n", + i, sc->sc_tinfo[i].cmds, + sc->sc_tinfo[i].dconns, + sc->sc_tinfo[i].senses, + sc->sc_tinfo[i].lubusy); + } + } + splx(s); +} +#endif -- cgit v1.2.3