/* $NetBSD: siop.c,v 1.69 2014/09/21 15:44:17 christos Exp $ */ /* * 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 */ /* * Copyright (c) 1994 Michael L. Hitch * * 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. * * 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. * * @(#)siop.c 7.5 (Berkeley) 5/4/91 */ /* * AMIGA 53C710 scsi adaptor driver */ #include "opt_ddb.h" #include __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.69 2014/09/21 15:44:17 christos Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #ifdef __m68k__ #include #else #define DCIAS(pa) #endif #include #include #include #include /* * 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(struct siop_softc *); void siopabort(struct siop_softc *, siop_regmap_p, const char *); void sioperror(struct siop_softc *, siop_regmap_p, u_char); void siopstart(struct siop_softc *); int siop_checkintr(struct siop_softc *, u_char, u_char, u_char, int *); void siopreset(struct siop_softc *); void siopsetdelay(int); void siop_scsidone(struct siop_acb *, int); void siop_timeout(void *); void siop_sched(struct siop_softc *); void siop_poll(struct siop_softc *, struct siop_acb *); void siopintr(struct siop_softc *); void scsi_period_to_siop(struct siop_softc *, int); void siop_start(struct siop_softc *, int, int, u_char *, int, u_char *, int); void siop_dump_acb(struct siop_acb *); /* 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 /* * sync period transfer lookup - only valid for 66 MHz 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(struct siop_softc *); void siop_dump_trace(void); #else #define SIOP_TRACE(a,b,c,d) #endif /* * default minphys routine for siop based controllers */ void siop_minphys(struct buf *bp) { /* * No max transfer at this level. */ minphys(bp); } /* * used by specific siop controller * */ void siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, void *arg) { struct scsipi_xfer *xs; #ifdef DIAGNOSTIC struct scsipi_periph *periph; #endif struct siop_acb *acb; struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev); int flags, s; switch (req) { case ADAPTER_REQ_RUN_XFER: xs = arg; #ifdef DIAGNOSTIC periph = xs->xs_periph; #endif flags = xs->xs_control; /* XXXX ?? */ if (flags & XS_CTL_DATA_UIO) panic("siop: scsi data uio requested"); /* XXXX ?? */ if (sc->sc_nexus && flags & XS_CTL_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); #ifdef DIAGNOSTIC /* * This should never happen as we track the resources * in the mid-layer. */ if (acb == NULL) { scsipi_printaddr(periph); printf("unable to allocate acb\n"); panic("siop_scsipi_request"); } #endif acb->flags = ACB_ACTIVE; acb->xs = xs; memcpy(&acb->cmd, xs->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 & XS_CTL_POLL || siop_no_dma) siop_poll(sc, acb); return; case ADAPTER_REQ_GROW_RESOURCES: return; case ADAPTER_REQ_SET_XFER_MODE: return; } } void siop_poll(struct siop_softc *sc, struct siop_acb *acb) { siop_regmap_p rp = sc->sc_siopp; struct scsipi_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", device_xname(sc->sc_dev)); for (;;) { /* use cmd_wait values? */ i = 50000; /* XXX 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 %lx (+%lx) dcmd %lx ds %p timeout %d\n", xs->xs_periph->periph_target, acb->cmd.opcode, rp->siop_sbcl, rp->siop_dsp, rp->siop_dsp - sc->sc_scriptspa, *((volatile long *)&rp->siop_dcmd), &acb->ds, acb->xs->timeout); #endif i = 50000; --to; if (to <= 0) { siopreset(sc); return; } } delay(20); } 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", device_xname(sc->sc_dev)); 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->xs_status & XS_STS_DONE) break; } splx(s); } /* * start next command that's ready */ void siop_sched(struct siop_softc *sc) { struct scsipi_periph *periph; struct siop_acb *acb; int i; #ifdef DEBUG if (sc->sc_nexus) { printf("%s: siop_sched- nexus %p/%d ready %p/%d\n", device_xname(sc->sc_dev), sc->sc_nexus, sc->sc_nexus->xs->xs_periph->periph_target, sc->ready_list.tqh_first, sc->ready_list.tqh_first->xs->xs_periph->periph_target); return; } #endif for (acb = sc->ready_list.tqh_first; acb; acb = acb->chain.tqe_next) { periph = acb->xs->xs_periph; i = periph->periph_target; if(!(sc->sc_tinfo[i].lubusy & (1 << periph->periph_lun))) { struct siop_tinfo *ti = &sc->sc_tinfo[i]; TAILQ_REMOVE(&sc->ready_list, acb, chain); sc->sc_nexus = acb; periph = acb->xs->xs_periph; ti = &sc->sc_tinfo[periph->periph_target]; ti->lubusy |= (1 << periph->periph_lun); break; } } if (acb == NULL) { #ifdef DEBUGXXX printf("%s: siop_sched didn't find ready command\n", device_xname(sc->sc_dev)); #endif return; } if (acb->xs->xs_control & XS_CTL_RESET) siopreset(sc); #if 0 acb->cmd.bytes[0] |= slp->scsipi_scsi.lun << 5; /* XXXX */ #endif ++sc->sc_active; siop_select(sc); } void siop_scsidone(struct siop_acb *acb, int stat) { struct scsipi_xfer *xs; struct scsipi_periph *periph; struct siop_softc *sc; int dosched = 0; if (acb == NULL || (xs = acb->xs) == NULL) { #ifdef DIAGNOSTIC printf("siop_scsidone: NULL acb or scsipi_xfer\n"); #if defined(DEBUG) && defined(DDB) Debugger(); #endif #endif return; } callout_stop(&xs->xs_callout); periph = xs->xs_periph; sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); xs->status = stat; xs->resid = 0; /* XXXX */ if (xs->error == XS_NOERROR) { if (stat == SCSI_CHECK || stat == SCSI_BUSY) xs->error = XS_BUSY; } /* * 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->periph_target].lubusy &= ~(1<periph_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[periph->periph_target].lubusy &= ~(1<periph_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", device_xname(sc->sc_dev)); #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[periph->periph_target].cmds++; scsipi_done(xs); if (dosched && sc->sc_nexus == NULL) siop_sched(sc); } void siopabort(register struct siop_softc *sc, siop_regmap_p rp, const char *where) { #ifdef fix_this int i; #endif printf ("%s: abort %s: dstat %02x, sstat0 %02x sbcl %02x\n", device_xname(sc->sc_dev), 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(struct siop_softc *sc) { int i; u_int inhibit_sync; extern u_long scsi_nosync; extern int shift_nosync; /* * Need to check that scripts is on a long word boundary * Also should verify that dev doesn't span non-contiguous * physical pages. */ sc->sc_scriptspa = kvtop((void *)__UNCONST(scripts)); /* * malloc sc_acb to ensure that DS is on a long word boundary. */ sc->sc_acb = malloc(sizeof(struct siop_acb) * SIOP_NACB, M_DEVBUF, M_NOWAIT); if (sc->sc_acb == NULL) panic("siopinitialize: ACB malloc failed!"); 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; } if (scsi_nosync) { inhibit_sync = (scsi_nosync >> shift_nosync) & 0xff; shift_nosync += 8; #ifdef DEBUG if (inhibit_sync) printf("%s: Inhibiting synchronous transfer %02x\n", device_xname(sc->sc_dev), inhibit_sync); #endif for (i = 0; i < 8; ++i) if (inhibit_sync & (1 << i)) siop_inhibit_sync[i] = 1; } siopreset (sc); } void siop_timeout(void *arg) { struct siop_acb *acb; struct scsipi_periph *periph; struct siop_softc *sc; int s; acb = arg; periph = acb->xs->xs_periph; sc = device_private(periph->periph_channel->chan_adapter->adapt_dev); scsipi_printaddr(periph); printf("timed out\n"); s = splbio(); acb->xs->error = XS_TIMEOUT; siopreset(sc); splx(s); } void siopreset(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: ", device_xname(sc->sc_dev)); /* 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_channel.chan_id; 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 */ memset(&sc->sc_sync, 0, 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; __USE(dummy); splx (s); delay (siop_reset_delay * 1000); printf("siop id %d reset V%d\n", sc->sc_channel.chan_id, 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; memset(acb, 0, sizeof(struct siop_acb) * SIOP_NACB); for (i = 0; i < SIOP_NACB; i++) { TAILQ_INSERT_TAIL(&sc->free_list, acb, chain); acb++; } memset(sc->sc_tinfo, 0, sizeof(sc->sc_tinfo)); } else { if (sc->sc_nexus != NULL) { sc->sc_nexus->xs->error = XS_RESET; siop_scsidone(sc->sc_nexus, sc->sc_nexus->stat[0]); } while ((acb = sc->nexus_list.tqh_first) > 0) { acb->xs->error = XS_RESET; 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(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 nchain; int count, tcount; char *addr, *dmaend; struct siop_acb *acb = sc->sc_nexus; #ifdef DEBUG int i; #endif #ifdef DEBUG if (siop_debug & 0x100 && rp->siop_sbcl & SIOP_BSY) { printf ("ACK! siop was busy: rp %p script %p dsa %p active %ld\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]); memset(&acb->ds.chain, 0, sizeof (acb->ds.chain)); /* * Negotiate wide is the initial negotiation state; since the 53c710 * doesn't do wide transfers, just begin the synchronous transfer * negotation here. */ if (sc->sc_sync[target].state == NEG_WIDE) { if (siop_inhibit_sync[target]) { sc->sc_sync[target].state = NEG_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 = NEG_WAITS; #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 = PAGE_SIZE - ((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] %8p %lx\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 ((void *)acb, sizeof (struct siop_acb)); 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 %p script %p dsa %p active %ld\n", rp, &scripts, &acb->ds, sc->sc_active); #ifdef DDB /*Debugger();*/ #endif } #endif if (sc->nexus_list.tqh_first == NULL) { callout_reset(&acb->xs->xs_callout, mstohz(acb->xs->timeout) + 1, siop_timeout, acb); if (rp->siop_istat & SIOP_ISTAT_CON) printf("%s: siop_select while connected?\n", device_xname(sc->sc_dev)); rp->siop_temp = 0; rp->siop_sbcl = sc->sc_sync[target].sbcl; rp->siop_dsa = kvtop((void *)&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(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 = 0; 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 %lx scripts %lx:%lx", device_xname(sc->sc_dev), rp->siop_dsp, sc->sc_scriptspa, sc->sc_scriptspa + sizeof(scripts)); printf(" istat %x dstat %x sstat0 %x\n", istat, dstat, sstat0); #ifdef DDB Debugger(); #endif } #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((void *)&acb->ds)) { printf ("siop: invalid dsa: %lx %x\n", rp->siop_dsa, (unsigned)kvtop((void *)&acb->ds)); panic("*** siop DSA invalid ***"); } #endif target = acb->xs->xs_periph->periph_target; if (sc->sc_sync[target].state == NEG_WAITS) { if (acb->msg[1] == 0xff) printf ("%s: target %d ignored sync request\n", device_xname(sc->sc_dev), target); else if (acb->msg[1] == MSG_REJECT) printf ("%s: target %d rejected sync request\n", device_xname(sc->sc_dev), target); else /* XXX - need to set sync transfer parameters */ printf("%s: target %d (sync) %02x %02x %02x\n", device_xname(sc->sc_dev), target, acb->msg[1], acb->msg[2], acb->msg[3]); sc->sc_sync[target].state = NEG_DONE; } 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", device_xname(sc->sc_dev), acb->msg[0]); #endif if (sc->nexus_list.tqh_first) rp->siop_dcntl |= SIOP_DCNTL_STD; return 1; } if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff0b) { target = acb->xs->xs_periph->periph_target; if (acb->msg[1] == MSG_EXT_MESSAGE && acb->msg[2] == 3 && acb->msg[3] == MSG_SYNC_REQ) { #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 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", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev), target, acb->msg[4] * 4, acb->msg[5]); scsi_period_to_siop (sc, target); } rp->siop_sxfer = sc->sc_sync[target].sxfer; rp->siop_sbcl = sc->sc_sync[target].sbcl; if (sc->sc_sync[target].state == NEG_WAITS) { sc->sc_sync[target].state = NEG_DONE; rp->siop_dsp = sc->sc_scriptspa + Ent_clear_ack; return(0); } rp->siop_dcntl |= SIOP_DCNTL_STD; sc->sc_sync[target].state = NEG_DONE; return (0); } /* XXX - not SDTR message */ } if (sstat0 & SIOP_SSTAT0_M_A) { /* Phase mismatch */ #ifdef DEBUG ++siopphmm; if (acb == NULL) printf("%s: Phase mismatch with no active command?\n", device_xname(sc->sc_dev)); #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 *)__UNVOLATILE(&rp->siop_dcmd)) & 0xffffff; acb->iob_curlen += adjust; acb->iob_curbuf = *((long *)__UNVOLATILE(&rp->siop_dnad)) - adjust; #ifdef DEBUG if (siop_debug & 0x100) { int i; printf ("Phase mismatch: curbuf %lx curlen %lx dfifo %x dbc %x sstat1 %x adjust %x sbcl %x starts %d acb %p\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 %p len %lx\n", i, acb->ds.chain[i].databuf, acb->ds.chain[i].datalen); } } #endif dma_cachectl ((void *)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 +%lx dcmd %lx\n", rp->siop_sbcl, rp->siop_dsp - sc->sc_scriptspa, *((volatile long *)&rp->siop_dcmd)); #endif if ((rp->siop_sbcl & SIOP_REQ) == 0) { printf ("Phase mismatch: REQ not asserted! %02x dsp %lx\n", rp->siop_sbcl, rp->siop_dsp); #if defined(DEBUG) && defined(DDB) /*Debugger(); XXX is*/ #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", device_xname(sc->sc_dev)); if (rp->siop_sbcl & SIOP_BSY) { printf ("ACK! siop was busy at timeout: rp %p script %p dsa %p\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); } #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->xs_periph->periph_target; else target = 7; if (sstat0 & SIOP_SSTAT0_UDC) { #ifdef DEBUG if (acb == NULL) printf("%s: Unexpected disconnect with no active command?\n", device_xname(sc->sc_dev)); printf ("%s: target %d disconnected unexpectedly\n", device_xname(sc->sc_dev), 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 (acb != NULL); } 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 %lx (+%lx) curbuf %lx curlen %lx buf %p len %lx dfifo %x dbc %x sstat1 %x starts %d acb %p\n", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev)); 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 %lx/%lx chain[0] %p/%lx\n", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev), n); printf(" curbuf %lx curlen %lx\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", device_xname(sc->sc_dev)); if (rp->siop_dsps == 0xff02) printf ("%s: ID %02x disconnected without Save Data Pointers\n", device_xname(sc->sc_dev), 1 << target); #endif /* XXX is: if (rp->siop_dsps != 0xff02) { */ /* not disconnected without save data ptr */ 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: "); printf("curbuf %lx curlen %lx i %d\n", acb->iob_curbuf, acb->iob_curlen, i); #ifdef DDB Debugger(); #endif } /* XXX is: } */ #ifdef DEBUG if (siop_debug & 0x100) printf(" chain[0]: %p/%lx -> %lx/%lx\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]: %p/%lx -> %p/%lx\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((void *)&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 %lx\n", device_xname(sc->sc_dev), reselid, rp->siop_dsps); if ((rp->siop_sfbr & 0x80) == 0) printf("%s: Reselect message in was not identify: %x\n", device_xname(sc->sc_dev), rp->siop_sfbr); #endif if (sc->sc_nexus) { #ifdef DEBUG if (siop_debug & 0x100) printf ("%s: reselect ID %02x w/active\n", device_xname(sc->sc_dev), reselid); #endif TAILQ_INSERT_HEAD(&sc->ready_list, sc->sc_nexus, chain); sc->sc_tinfo[sc->sc_nexus->xs->xs_periph->periph_target].lubusy &= ~(1 << sc->sc_nexus->xs->xs_periph->periph_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((void *)&acb->ds); rp->siop_sxfer = sc->sc_sync[acb->xs->xs_periph->periph_target].sxfer; rp->siop_sbcl = sc->sc_sync[acb->xs->xs_periph->periph_target].sbcl; break; } if (acb == NULL) { printf("%s: target ID %02x reselect nexus_list %p\n", device_xname(sc->sc_dev), reselid, sc->nexus_list.tqh_first); panic("unable to find reselecting device"); } dma_cachectl ((void *)acb, sizeof(*acb)); rp->siop_temp = 0; rp->siop_dcntl |= SIOP_DCNTL_STD; return (0); } if (dstat & SIOP_DSTAT_SIR && rp->siop_dsps == 0xff04) { #ifdef DEBUG u_short ctest2 = rp->siop_ctest2; /* reselect was interrupted (by Sig_P or select) */ 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", device_xname(sc->sc_dev), rp->siop_scntl1, ctest2, rp->siop_sfbr, istat, rp->siop_istat); #endif /* XXX assumes it was not select */ if (sc->sc_nexus == NULL) { #ifdef DEBUG printf("%s: reselect interrupted, sc_nexus == NULL\n", device_xname(sc->sc_dev)); #if 0 siop_dump(sc); #ifdef DDB Debugger(); #endif #endif #endif rp->siop_dcntl |= SIOP_DCNTL_STD; return(0); } target = sc->sc_nexus->xs->xs_periph->periph_target; rp->siop_temp = 0; rp->siop_dsa = kvtop((void *)&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", device_xname(sc->sc_dev)); /* Unrecognized message in byte */ dma_cachectl (&acb->msg[1],1); printf ("%s: Unrecognized message in data sfbr %x msg %x sbcl %x\n", device_xname(sc->sc_dev), 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_clear_ack; 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", device_xname(sc->sc_dev), 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: %lx 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 %p\n", target, &acb->ds); printf ("scripts %lx ds %x rp %x dsp %lx dcmd %lx\n", sc->sc_scriptspa, (unsigned)kvtop((void *)&acb->ds), (unsigned)kvtop((void *)__UNVOLATILE(rp)), rp->siop_dsp, *((volatile long *)&rp->siop_dcmd)); printf ("siopchkintr: istat %x dstat %x sstat0 %x dsps %lx dsa %lx 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(struct siop_softc *sc) { siop_regmap_p rp; struct siop_acb *acb = sc->sc_nexus; #ifdef DEBUG if (siop_debug & 1) printf ("%s: select ", device_xname(sc->sc_dev)); #endif rp = sc->sc_siopp; if (acb->xs->xs_control & XS_CTL_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 %p\n", acb->xs->xs_periph->periph_target, acb->cmd.opcode, &sc->sc_nexus->ds); #endif siop_start(sc, acb->xs->xs_periph->periph_target, acb->xs->xs_periph->periph_lun, (u_char *)&acb->cmd, acb->clen, acb->daddr, acb->dleft); return; } /* * 53C710 interrupt handler */ void siopintr(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", device_xname(sc->sc_dev), istat, dstat, sstat0); if (!sc->sc_active) { printf ("%s: spurious interrupt? istat %x dstat %x sstat0 %x nexus %p status %x\n", device_xname(sc->sc_dev), istat, dstat, sstat0, sc->sc_nexus, sc->sc_nexus ? sc->sc_nexus->stat[0] : 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 %lx sbcl %x sts %x msg %x\n", device_xname(sc->sc_dev), 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", device_xname(sc->sc_dev)); printf(" targ %d sbcl %02x sfbr %x lcrc %02x dsp +%x\n", sc->sc_nexus->xs->xs_periph->periph_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 ? sc->sc_nexus->stat[0] : -1); } } splx(s); } /* * This is based on the Progressive Peripherals 33Mhz Zeus driver and will * not be correct for other 53c710 boards. * */ void scsi_period_to_siop(struct siop_softc *sc, int target) { int period, offset, sxfer, sbcl = 0; #ifdef DEBUG_SYNC int i; #endif period = sc->sc_nexus->msg[4]; offset = sc->sc_nexus->msg[5]; #ifdef DEBUG_SYNC 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); #ifdef DEBUG_SYNC 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)); #endif } sc->sc_sync[target].sxfer = sxfer; sc->sc_sync[target].sbcl = sbcl; #ifdef DEBUG_SYNC printf ("siop sync: siop_sxfr %02x, siop_sbcl %02x\n", sxfer, sbcl); #endif } #ifdef DEBUG #if SIOP_TRACE_SIZE void siop_dump_trace(void) { 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(struct siop_acb *acb) { u_char *b = (u_char *) &acb->cmd; int i; printf("acb@%p ", acb); if (acb->xs == NULL) { printf("\n"); return; } printf("(%d:%d) flags %2x clen %2d cmd ", acb->xs->xs_periph->periph_target, acb->xs->xs_periph->periph_lun, acb->flags, acb->clen); for (i = acb->clen; i; --i) printf(" %02x", *b++); printf("\n"); printf(" xs: %p data %p:%04x ", acb->xs, acb->xs->data, acb->xs->datalen); printf("va %p:%lx ", acb->iob_buf, acb->iob_len); printf("cur %lx:%lx\n", acb->iob_curbuf, acb->iob_curlen); } void siop_dump(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@%p regs %p istat %x\n", device_xname(sc->sc_dev), sc, rp, rp->siop_istat); if ((acb = sc->free_list.tqh_first) > 0) { printf("Free list:\n"); while (acb) { siop_dump_acb(acb); acb = acb->chain.tqe_next; } } if ((acb = sc->ready_list.tqh_first) > 0) { printf("Ready list:\n"); while (acb) { siop_dump_acb(acb); acb = acb->chain.tqe_next; } } if ((acb = sc->nexus_list.tqh_first) > 0) { 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 lubusy %x\n", i, sc->sc_tinfo[i].cmds, sc->sc_tinfo[i].dconns, sc->sc_tinfo[i].lubusy); } } splx(s); } #endif