/* $NetBSD: si.c,v 1.21 1995/08/14 20:00:00 gwr Exp $ */ /* * Copyright (C) 1994 Adam Glass, Gordon W. Ross * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo, * Michael L. Finch, Bradley A. Grantham, and * Lawrence A. Kesteloot * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the Alice Group. * 4. The names of the Alice Group or any of its members may not be used * to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``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 ALICE GROUP 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. */ #define DEBUG 1 /* XXX - Need to add support for real DMA. -gwr */ /* #define PSEUDO_DMA 1 (broken) */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "scsi_defs.h" #include "scsi_5380.h" #include "scsi_sunsi.h" #ifdef DEBUG static int si_debug = 0; static int si_flags = 0 /* | SDEV_DB2 */ ; #endif #define SCI_PHASE_DISC 0 /* sort of ... */ #define SCI_CLR_INTR(regs) ((volatile)(regs->sci_iack)) #define SCI_ACK(ptr,phase) (ptr)->sci_tcmd = (phase) #define SCSI_TIMEOUT_VAL 1000000 #define WAIT_FOR_NOT_REQ(ptr) { \ int scsi_timeout = SCSI_TIMEOUT_VAL; \ while ( ((ptr)->sci_bus_csr & SCI_BUS_REQ) && \ ((ptr)->sci_bus_csr & SCI_BUS_REQ) && \ ((ptr)->sci_bus_csr & SCI_BUS_REQ) && \ (--scsi_timeout) ); \ if (!scsi_timeout) { \ printf("scsi timeout--WAIT_FOR_NOT_REQ---%s, line %d.\n", \ __FILE__, __LINE__); \ goto scsi_timeout_error; \ } \ } #define WAIT_FOR_REQ(ptr) { \ int scsi_timeout = SCSI_TIMEOUT_VAL; \ while ( (((ptr)->sci_bus_csr & SCI_BUS_REQ) == 0) && \ (((ptr)->sci_bus_csr & SCI_BUS_REQ) == 0) && \ (((ptr)->sci_bus_csr & SCI_BUS_REQ) == 0) && \ (--scsi_timeout) ); \ if (!scsi_timeout) { \ printf("scsi timeout--WAIT_FOR_REQ---%s, line %d.\n", \ __FILE__, __LINE__); \ goto scsi_timeout_error; \ } \ } #define WAIT_FOR_BSY(ptr) { \ int scsi_timeout = SCSI_TIMEOUT_VAL; \ while ( (((ptr)->sci_bus_csr & SCI_BUS_BSY) == 0) && \ (((ptr)->sci_bus_csr & SCI_BUS_BSY) == 0) && \ (((ptr)->sci_bus_csr & SCI_BUS_BSY) == 0) && \ (--scsi_timeout) ); \ if (!scsi_timeout) { \ printf("scsi timeout--WAIT_FOR_BSY---%s, line %d.\n", \ __FILE__, __LINE__); \ goto scsi_timeout_error; \ } \ } #define ARBITRATION_RETRIES 1000 #ifdef DDB int Debugger(); #else #define Debugger() panic("Should call Debugger here %s:%d", \ __FILE__, __LINE__) #endif struct ncr5380_softc { struct device sc_dev; volatile void *sc_regs; int sc_adapter_type; int sc_adapter_iv_am; /* int. vec + address modifier */ struct scsi_link sc_link; }; static void ncr5380_minphys(struct buf *bp); static int ncr5380_scsi_cmd(struct scsi_xfer *xs); static int ncr5380_reset_adapter(struct ncr5380_softc *); static int ncr5380_reset_scsibus(struct ncr5380_softc *); static int ncr5380_poll(int adapter, int timeout); static int ncr5380_send_cmd(struct scsi_xfer *xs); static int ncr_intr(void *); static int si_generic(int adapter, int id, int lun, struct scsi_generic *cmd, int cmdlen, void *databuf, int datalen); static int si_group0(int adapter, int id, int lun, int opcode, int addr, int len, int flags, caddr_t databuf, int datalen); static char scsi_name[] = "si"; struct scsi_adapter ncr5380_switch = { ncr5380_scsi_cmd, /* scsi_cmd() */ ncr5380_minphys, /* scsi_minphys() */ NULL, /* open_target_lu() */ NULL, /* close_target_lu() */ }; /* This is copied from julian's bt driver */ /* "so we have a default dev struct for our link struct." */ struct scsi_device ncr_dev = { NULL, /* Use default error handler. */ NULL, /* Use default start handler. */ NULL, /* Use default async handler. */ NULL, /* Use default "done" routine. */ }; static int si_match(); static void si_attach(); struct cfdriver sicd = { NULL, "si", si_match, si_attach, DV_DULL, sizeof(struct ncr5380_softc), NULL, 0, }; static int si_print(aux, name) void *aux; char *name; { } static int si_match(parent, vcf, args) struct device *parent; void *vcf, *args; { struct cfdata *cf = vcf; struct confargs *ca = args; int x, probe_addr; /* Default interrupt priority always splbio==2 */ if (ca->ca_intpri == -1) ca->ca_intpri = 2; if ((cpu_machine_id == SUN3_MACH_50) || (cpu_machine_id == SUN3_MACH_60) ) { /* Sun3/50 or Sun3/60 have only OBIO "si" */ if (ca->ca_bustype != BUS_OBIO) return(0); if (ca->ca_paddr == -1) ca->ca_paddr = OBIO_NCR_SCSI; /* OK... */ } else { /* Other Sun3 models may have VME "si" or "sc" */ if (ca->ca_bustype != BUS_VME16) return (0); if (ca->ca_paddr == -1) return (0); /* OK... */ } /* Make sure there is something there... */ x = bus_peek(ca->ca_bustype, ca->ca_paddr + 1, 1); if (x == -1) return (0); /* * If this is a VME SCSI board, we have to determine whether * it is an "sc" (Sun2) or "si" (Sun3) SCSI board. This can * be determined using the fact that the "sc" board occupies * 4K bytes in VME space but the "si" board occupies 2K bytes. */ if (ca->ca_bustype == BUS_VME16) { /* Note, the "si" board should NOT respond here. */ x = bus_peek(ca->ca_bustype, ca->ca_paddr + 0x801, 1); if (x != -1) return(0); } return (1); } static void si_attach(parent, self, args) struct device *parent, *self; void *args; { struct ncr5380_softc *ncr5380 = (struct ncr5380_softc *) self; volatile sci_regmap_t *regs; struct confargs *ca = args; switch (ca->ca_bustype) { case BUS_OBIO: regs = (sci_regmap_t *) obio_alloc(ca->ca_paddr, sizeof(*regs)); isr_add_autovect(ncr_intr, (void *)ncr5380, ca->ca_intpri); break; case BUS_VME16: regs = (sci_regmap_t *) bus_mapin(ca->ca_bustype, ca->ca_paddr, sizeof(*regs)); isr_add_vectored(ncr_intr, (void *)ncr5380, ca->ca_intpri, ca->ca_intvec); break; default: printf("unknown\n"); return; } ncr5380->sc_adapter_type = ca->ca_bustype; ncr5380->sc_adapter_iv_am = VME_SUPV_DATA_24 | (ca->ca_intvec & 0xFF); ncr5380->sc_regs = regs; /* * fill in the prototype scsi_link. */ ncr5380->sc_link.adapter_softc = ncr5380; ncr5380->sc_link.adapter_target = 7; ncr5380->sc_link.adapter = &ncr5380_switch; ncr5380->sc_link.device = &ncr_dev; ncr5380->sc_link.openings = 2; #ifdef DEBUG ncr5380->sc_link.flags |= si_flags; #endif printf("\n"); ncr5380_reset_adapter(ncr5380); ncr5380_reset_scsibus(ncr5380); config_found(self, &(ncr5380->sc_link), si_print); } #define MIN_PHYS 65536 /*BARF!!!!*/ static void ncr5380_minphys(struct buf *bp) { if (bp->b_bcount > MIN_PHYS) { printf("Uh-oh... ncr5380_minphys setting bp->b_bcount = %x.\n", MIN_PHYS); bp->b_bcount = MIN_PHYS; } minphys(bp); } #undef MIN_PHYS static int ncr5380_scsi_cmd(struct scsi_xfer *xs) { int flags, s, r; flags = xs->flags; if (xs->bp) flags |= (SCSI_NOSLEEP); if ( flags & ITSDONE ) { printf("Already done?"); xs->flags &= ~ITSDONE; } if ( ! ( flags & INUSE ) ) { printf("Not in use?"); xs->flags |= INUSE; } s = splbio(); if ( flags & SCSI_RESET ) { printf("flags & SCSIRESET.\n"); ncr5380_reset_scsibus(xs->sc_link->adapter_softc); r = COMPLETE; } else { r = ncr5380_send_cmd(xs); xs->flags |= ITSDONE; scsi_done(xs); } splx(s); switch(r) { case COMPLETE: case SUCCESSFULLY_QUEUED: r = SUCCESSFULLY_QUEUED; if (xs->flags & SCSI_POLL) r = COMPLETE; break; default: break; } return r; } #ifdef DEBUG static int ncr5380_show_scsi_cmd(struct scsi_xfer *xs) { u_char *b = (u_char *) xs->cmd; int i = 0; if ( ! ( xs->flags & SCSI_RESET ) ) { printf("si(%d:%d:%d)-", xs->sc_link->scsibus, xs->sc_link->target, xs->sc_link->lun); while (i < xs->cmdlen) { if (i) printf(","); printf("%x",b[i++]); } printf("-\n"); } else { printf("si(%d:%d:%d)-RESET-\n", xs->sc_link->scsibus, xs->sc_link->target, xs->sc_link->lun); } } #endif /* * Actual chip control. */ static void ncr_sbc_intr(struct ncr5380_softc *ncr5380) { volatile sci_regmap_t *regs = ncr5380->sc_regs; if ((regs->sci_csr & SCI_CSR_INT) == 0) { #ifdef DEBUG printf (" ncr_sbc_intr: spurrious\n"); #endif return; } SCI_CLR_INTR(regs); #ifdef DEBUG printf (" ncr_sbc_intr\n"); #endif } static void ncr_dma_intr(struct ncr5380_softc *ncr5380) { volatile struct si_regs *regs = ncr5380->sc_regs; #ifdef DEBUG printf (" ncr_dma_intr\n"); #endif } static int ncr_intr(void *arg) { struct ncr5380_softc *ncr5380 = arg; volatile struct si_regs *si = ncr5380->sc_regs; int rv = 0; /* Interrupts not enabled? Can not be for us. */ if ((si->si_csr & SI_CSR_INTR_EN) == 0) return rv; if (si->si_csr & SI_CSR_DMA_IP) { ncr_dma_intr(ncr5380); rv++; } if (si->si_csr & SI_CSR_SBC_IP) { ncr_sbc_intr(ncr5380); rv++; } return rv; } static int ncr5380_reset_adapter(struct ncr5380_softc *sc) { volatile struct si_regs *si = sc->sc_regs; #ifdef DEBUG if (si_debug) { printf("si_reset_adapter\n"); } #endif /* The reset bits in the CSR are active low. */ si->si_csr = 0; delay(20); si->si_csr = SI_CSR_FIFO_RES | SI_CSR_SCSI_RES; si->fifo_count = 0; if (sc->sc_adapter_type == BUS_VME16) { si->dma_addrh = 0; si->dma_addrl = 0; si->dma_counth = 0; si->dma_countl = 0; si->iv_am = sc->sc_adapter_iv_am; } } static int ncr5380_reset_scsibus(struct ncr5380_softc *ncr5380) { volatile sci_regmap_t *regs = ncr5380->sc_regs; #ifdef DEBUG if (si_debug) { printf("si_reset_scsibus\n"); } #endif regs->sci_icmd = SCI_ICMD_RST; delay(100); regs->sci_icmd = 0; regs->sci_mode = 0; regs->sci_tcmd = SCI_PHASE_DISC; regs->sci_sel_enb = 0; SCI_CLR_INTR(regs); /* XXX - Need long delay here! */ } static int ncr5380_poll(int adapter, int timeout) { } static int ncr5380_send_cmd(struct scsi_xfer *xs) { int sense; #ifdef DIAGNOSTIC if ((getsr() & PSL_IPL) < PSL_IPL2) panic("ncr_send_cmd: bad spl"); #endif #ifdef DEBUG if (si_debug & 2) ncr5380_show_scsi_cmd(xs); #endif sense = si_generic( xs->sc_link->scsibus, xs->sc_link->target, xs->sc_link->lun, xs->cmd, xs->cmdlen, xs->data, xs->datalen ); switch (sense) { case 0: /* success */ xs->resid = 0; xs->error = XS_NOERROR; break; case 0x02: /* Check condition */ #ifdef DEBUG if (si_debug) printf("check cond. target %d.\n", xs->sc_link->target); #endif delay(10); /* Phil's fix for slow devices. */ si_group0(xs->sc_link->scsibus, xs->sc_link->target, xs->sc_link->lun, 0x3, 0x0, sizeof(struct scsi_sense_data), 0, (caddr_t) &(xs->sense), sizeof(struct scsi_sense_data)); xs->error = XS_SENSE; break; case 0x08: /* Busy - common code will delay, retry. */ xs->error = XS_BUSY; break; default: /* Dead - tell common code to give up. */ xs->error = XS_DRIVER_STUFFUP; break; } return (COMPLETE); } static int si_select_target(register volatile sci_regmap_t *regs, u_char myid, u_char tid, int with_atn) { register u_char bid, icmd; int ret = SCSI_RET_RETRY; int arb_retries, arb_wait; /* for our purposes.. */ myid = 1 << myid; tid = 1 << tid; regs->sci_sel_enb = 0; /* we don't want any interrupts. */ regs->sci_tcmd = 0; /* get into a harmless state */ arb_retries = ARBITRATION_RETRIES; retry_arbitration: regs->sci_mode = 0; /* get into a harmless state */ wait_for_bus_free: if (--arb_retries <= 0) { #ifdef DEBUG if (si_debug) { printf("si_select: arb_retries expended; resetting...\n"); } #endif ret = SCSI_RET_NEED_RESET; goto nosel; } icmd = regs->sci_icmd & ~(SCI_ICMD_DIFF|SCI_ICMD_TEST); if (regs->sci_bus_csr & (SCI_BUS_BSY|SCI_BUS_SEL)) { /* Something is sitting on the SCSI bus... */ #ifdef DEBUG /* Only complain once (the last time through). */ if (si_debug && (arb_retries <= 1)) { printf("si_select_target: still BSY+SEL\n"); } #endif /* Give it a little time, then try again. */ delay(10); goto wait_for_bus_free; } regs->sci_odata = myid; regs->sci_mode = SCI_MODE_ARB; /* regs->sci_mode |= SCI_MODE_ARB; XXX? */ /* AIP might not set if BSY went true after we checked */ /* Wait up to about 100 usec. for it to appear. */ arb_wait = 50; /* X2 */ do { if (regs->sci_icmd & SCI_ICMD_AIP) goto got_aip; delay2us(); } while (--arb_wait > 0); /* XXX - Could have missed it? */ #ifdef DEBUG if (si_debug) printf("si_select_target: API did not appear\n"); #endif goto retry_arbitration; got_aip: #ifdef DEBUG if (si_debug & 4) { printf("si_select_target: API after %d tries (last wait %d)\n", ARBITRATION_RETRIES - arb_retries, (50 - arb_wait)); } #endif delay(3); /* 2.2 uSec. arbitration delay */ if (regs->sci_icmd & SCI_ICMD_LST) { #ifdef DEBUG if (si_debug) printf ("lost 1\n"); #endif goto retry_arbitration; /* XXX */ } regs->sci_mode &= ~SCI_MODE_PAR_CHK; bid = regs->sci_data; if ((bid & ~myid) > myid) { #ifdef DEBUG if (si_debug) printf ("lost 2\n"); #endif /* Trying again will not help. */ goto lost; } if (regs->sci_icmd & SCI_ICMD_LST) { #ifdef DEBUG if (si_debug) printf ("lost 3\n"); #endif goto lost; } /* Won arbitration, enter selection phase now */ icmd = regs->sci_icmd & ~(SCI_ICMD_DIFF|SCI_ICMD_TEST); icmd |= (with_atn ? (SCI_ICMD_SEL|SCI_ICMD_ATN) : SCI_ICMD_SEL); regs->sci_icmd = icmd; if (regs->sci_icmd & SCI_ICMD_LST) { #ifdef DEBUG if (si_debug) printf ("nosel\n"); #endif goto nosel; } /* XXX a target that violates specs might still drive the bus XXX */ /* XXX should put our id out, and after the delay check nothi XXX */ /* XXX ng else is out there. XXX */ delay2us(); regs->sci_sel_enb = 0; regs->sci_odata = myid | tid; icmd |= SCI_ICMD_BSY|SCI_ICMD_DATA; regs->sci_icmd = icmd; /* regs->sci_mode &= ~SCI_MODE_ARB; 2 deskew delays, too */ regs->sci_mode = 0; /* 2 deskew delays, too */ icmd &= ~SCI_ICMD_BSY; regs->sci_icmd = icmd; /* bus settle delay, 400ns */ delay2us(); /* too much (was 2) ? */ regs->sci_mode |= SCI_MODE_PAR_CHK; { register int timeo = 2500;/* 250 msecs in 100 usecs chunks */ while ((regs->sci_bus_csr & SCI_BUS_BSY) == 0) { if (--timeo > 0) { delay(100); } else { /* This is the "normal" no-such-device select error. */ #ifdef DEBUG if (si_debug) printf("si_select: not BSY (nothing there)\n"); #endif goto nodev; } } } icmd &= ~(SCI_ICMD_DATA|SCI_ICMD_SEL); regs->sci_icmd = icmd; /* regs->sci_sel_enb = myid;*/ /* looks like we should NOT have it */ /* XXX - SCI_MODE_PAR_CHK ? */ return SCSI_RET_SUCCESS; nodev: ret = SCSI_RET_DEVICE_DOWN; regs->sci_sel_enb = myid; nosel: regs->sci_icmd = 0; regs->sci_mode = 0; return ret; lost: regs->sci_icmd = 0; regs->sci_mode = 0; #ifdef DEBUG if (si_debug) { printf("si_select: lost arbitration\n"); } #endif return ret; } sci_data_out(regs, phase, count, data) register volatile sci_regmap_t *regs; unsigned char *data; { register unsigned char icmd; register int cnt=0; /* ..checks.. */ icmd = regs->sci_icmd & ~(SCI_ICMD_DIFF|SCI_ICMD_TEST); loop: /* SCSI bus phase not valid until REQ is true. */ WAIT_FOR_REQ(regs); if (SCI_CUR_PHASE(regs->sci_bus_csr) != phase) return cnt; icmd |= SCI_ICMD_DATA; regs->sci_icmd = icmd; regs->sci_odata = *data++; icmd |= SCI_ICMD_ACK; regs->sci_icmd = icmd; icmd &= ~(SCI_ICMD_DATA|SCI_ICMD_ACK); WAIT_FOR_NOT_REQ(regs); regs->sci_icmd = icmd; ++cnt; if (--count > 0) goto loop; scsi_timeout_error: return cnt; } sci_data_in(regs, phase, count, data) register volatile sci_regmap_t *regs; unsigned char *data; { register unsigned char icmd; register int cnt=0; /* ..checks.. */ icmd = regs->sci_icmd & ~(SCI_ICMD_DIFF|SCI_ICMD_TEST); loop: /* SCSI bus phase not valid until REQ is true. */ WAIT_FOR_REQ(regs); if (SCI_CUR_PHASE(regs->sci_bus_csr) != phase) return cnt; *data++ = regs->sci_data; icmd |= SCI_ICMD_ACK; regs->sci_icmd = icmd; icmd &= ~SCI_ICMD_ACK; WAIT_FOR_NOT_REQ(regs); regs->sci_icmd = icmd; ++cnt; if (--count > 0) goto loop; scsi_timeout_error: return cnt; } /* Return -1 (error) or number of bytes sent (>=0). */ static int si_command_transfer(register volatile sci_regmap_t *regs, int maxlen, u_char *data, u_char *status, u_char *msg) { int xfer, phase; xfer = 0; regs->sci_icmd = 0; while (1) { WAIT_FOR_REQ(regs); phase = SCI_CUR_PHASE(regs->sci_bus_csr); switch (phase) { case SCSI_PHASE_CMD: SCI_ACK(regs,SCSI_PHASE_CMD); xfer += sci_data_out(regs, SCSI_PHASE_CMD, maxlen, data); goto out; case SCSI_PHASE_DATA_IN: printf("command_transfer: Data in phase?\n"); goto err; case SCSI_PHASE_DATA_OUT: printf("command_transfer: Data out phase?\n"); goto err; case SCSI_PHASE_STATUS: SCI_ACK(regs,SCSI_PHASE_STATUS); printf("command_transfer: status in...\n"); sci_data_in(regs, SCSI_PHASE_STATUS, 1, status); printf("command_transfer: status=0x%x\n", *status); goto err; case SCSI_PHASE_MESSAGE_IN: SCI_ACK(regs,SCSI_PHASE_MESSAGE_IN); printf("command_transfer: msg in?\n"); sci_data_in(regs, SCSI_PHASE_MESSAGE_IN, 1, msg); break; case SCSI_PHASE_MESSAGE_OUT: SCI_ACK(regs,SCSI_PHASE_MESSAGE_OUT); sci_data_out(regs, SCSI_PHASE_MESSAGE_OUT, 1, msg); break; default: printf("command_transfer: Unexpected phase 0x%x\n", phase); goto err; } } scsi_timeout_error: err: xfer = -1; out: return xfer; } static int si_data_transfer(register volatile sci_regmap_t *regs, int maxlen, u_char *data, u_char *status, u_char *msg) { int retlen = 0, xfer, phase; regs->sci_icmd = 0; *status = 0; while (1) { WAIT_FOR_REQ(regs); phase = SCI_CUR_PHASE(regs->sci_bus_csr); switch (phase) { case SCSI_PHASE_CMD: printf("Command phase in data_transfer().\n"); return retlen; case SCSI_PHASE_DATA_IN: SCI_ACK(regs,SCSI_PHASE_DATA_IN); #if PSEUDO_DMA xfer = sci_pdma_in(regs, SCSI_PHASE_DATA_IN, maxlen, data); #else xfer = sci_data_in(regs, SCSI_PHASE_DATA_IN, maxlen, data); #endif retlen += xfer; maxlen -= xfer; break; case SCSI_PHASE_DATA_OUT: SCI_ACK(regs,SCSI_PHASE_DATA_OUT); #if PSEUDO_DMA xfer = sci_pdma_out(regs, SCSI_PHASE_DATA_OUT, maxlen, data); #else xfer = sci_data_out(regs, SCSI_PHASE_DATA_OUT, maxlen, data); #endif retlen += xfer; maxlen -= xfer; break; case SCSI_PHASE_STATUS: SCI_ACK(regs,SCSI_PHASE_STATUS); sci_data_in(regs, SCSI_PHASE_STATUS, 1, status); break; case SCSI_PHASE_MESSAGE_IN: SCI_ACK(regs,SCSI_PHASE_MESSAGE_IN); sci_data_in(regs, SCSI_PHASE_MESSAGE_IN, 1, msg); if (*msg == 0) { return retlen; } else { printf( "message 0x%x in " "data_transfer.\n", *msg); } break; case SCSI_PHASE_MESSAGE_OUT: SCI_ACK(regs,SCSI_PHASE_MESSAGE_OUT); sci_data_out(regs, SCSI_PHASE_MESSAGE_OUT, 1, msg); break; default: printf( "Unexpected phase 0x%x in " "data_transfer().\n", phase); scsi_timeout_error: return retlen; break; } } } static int si_dorequest(struct ncr5380_softc *sc, int target, int lun, u_char *cmd, int cmdlen, char *databuf, int datalen, int *sent) /* Returns 0 on success, -1 on internal error, or the status byte */ { register volatile sci_regmap_t *regs = sc->sc_regs; int cmd_bytes_sent, r; u_char stat, msg, c; #ifdef DEBUG if (si_debug) { printf("si_dorequest: target=%d, lun=%d\n", target, lun); } #endif *sent = 0; if ( ( r = si_select_target(regs, 7, target, 1) ) != SCSI_RET_SUCCESS) { #ifdef DEBUG if (si_debug) { printf("si_dorequest: select returned %d\n", r); } #endif SCI_CLR_INTR(regs); switch (r) { case SCSI_RET_NEED_RESET: printf("si_dorequest: target=%d, lun=%d, resetting...\n", target, lun, r); ncr5380_reset_adapter(sc); ncr5380_reset_scsibus(sc); /* fall through */ case SCSI_RET_RETRY: return 0x08; /* Busy - tell common code to retry. */ default: printf("si_dorequest: target=%d, lun=%d, error=%d.\n", target, lun, r); /* fall through */ case SCSI_RET_DEVICE_DOWN: return -1; /* Dead - tell common code to give up. */ } } c = 0x80 | lun; if ((cmd_bytes_sent = si_command_transfer(regs, cmdlen, (u_char *) cmd, &stat, &c)) != cmdlen) { SCI_CLR_INTR(regs); if (cmd_bytes_sent >= 0) { printf("Data underrun sending CCB (%d bytes of %d, sent).\n", cmd_bytes_sent, cmdlen); } return -1; } *sent = si_data_transfer(regs, datalen, (u_char *)databuf, &stat, &msg); #ifdef DEBUG if (si_debug) { printf("si_dorequest: data transfered = %d\n", *sent); } #endif return stat; } static int si_generic(int adapter, int id, int lun, struct scsi_generic *cmd, int cmdlen, void *databuf, int datalen) { register struct ncr5380_softc *sc = sicd.cd_devs[adapter]; int i, j, sent; if (cmd->opcode == TEST_UNIT_READY) /* XXX */ cmd->bytes[0] = ((u_char) lun << 5); i = si_dorequest(sc, id, lun, (u_char *) cmd, cmdlen, databuf, datalen, &sent); return i; } static int si_group0(int adapter, int id, int lun, int opcode, int addr, int len, int flags, caddr_t databuf, int datalen) { register struct ncr5380_softc *sc = sicd.cd_devs[adapter]; unsigned char cmd[6]; int i, j, sent; cmd[0] = opcode; /* Operation code */ cmd[1] = (lun << 5) | ((addr >> 16) & 0x1F); /* Lun & MSB of addr */ cmd[2] = (addr >> 8) & 0xFF; /* addr */ cmd[3] = addr & 0xFF; /* LSB of addr */ cmd[4] = len; /* Allocation length */ cmd[5] = flags; /* Link/Flag */ i = si_dorequest(sc, id, lun, cmd, 6, databuf, datalen, &sent); return i; }