/* $OpenBSD: vs.c,v 1.19 2005/12/03 18:09:37 krw Exp $ */ /* * Copyright (c) 1999 Steve Murphree, Jr. * 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. */ /* * MVME328 scsi adaptor driver */ #include #include #include #include #include #include #include #include #include #include #include #include #ifdef mvme88k #include #include #include #else #include #include #endif void scopy(void *, void *, u_int); void szero(void *, u_int); int do_vspoll(struct vs_softc *, int, int); void thaw_queue(struct vs_softc *, u_int8_t); int vs_checkintr(struct vs_softc *, struct scsi_xfer *, int *); void vs_chksense(struct scsi_xfer *); void vs_reset(struct vs_softc *); void vs_resync(struct vs_softc *); void vs_initialize(struct vs_softc *); void vs_intr(void *); int vs_poll(struct vs_softc *, struct scsi_xfer *); void vs_scsidone(struct scsi_xfer *, int); M328_CQE *vs_getcqe(struct vs_softc *); M328_IOPB *vs_getiopb(struct vs_softc *); void vs_link_sg_element(sg_list_element_t *, vaddr_t, int); void vs_link_sg_list(sg_list_element_t *, vaddr_t, int); /* * 16 bit 's' memory functions. MVME328 is a D16 board. * We must program with that in mind or else... * bcopy/bzero (the 'b' meaning byte) is implemented in * 32 bit operations for speed, so thay are not really * 'byte' operations at all!! MVME1x7 can be set up to * handle D32 -> D16 read/writes via VMEChip2 Address * modifiers, however MVME188 can not. These next two * functions insure 16 bit copy/zero operations. The * structures are all implemented with 16 bit or less * types. smurph */ void scopy(src, dst, cnt) void *src, *dst; u_int cnt; { u_int16_t volatile *x, *y, z; z = cnt >> 1; x = (u_int16_t *) src; y = (u_int16_t *) dst; while (z--) { *y++ = *x++; } } void szero(src, cnt) void *src; u_int cnt; { u_int16_t *source; u_int16_t zero = 0; u_int16_t z; source = (u_int16_t *) src; z = cnt >> 1; while (z--) { *source++ = zero; } } /* * default minphys routine for MVME328 based controllers */ void vs_minphys(bp) struct buf *bp; { /* * No max transfer at this level. */ minphys(bp); } int do_vspoll(sc, to, canreset) struct vs_softc *sc; int to; int canreset; { int i; if (to <= 0 ) to = 50000; /* use cmd_wait values? */ i = 50000; /*spl0();*/ while (!(CRSW & (M_CRSW_CRBV | M_CRSW_CC))) { if (--i <= 0) { #ifdef DEBUG printf ("waiting: timeout %d crsw 0x%x\n", to, CRSW); #endif i = 50000; --to; if (to <= 0) { /*splx(s);*/ if (canreset) { vs_reset(sc); vs_resync(sc); } printf ("timed out: timeout %d crsw 0x%x\n", to, CRSW); return 1; } } } return 0; } int vs_poll(sc, xs) struct vs_softc *sc; struct scsi_xfer *xs; { int status; int to; /*s = splbio();*/ to = xs->timeout / 1000; for (;;) { if (do_vspoll(sc, to, 1)) break; if (vs_checkintr(sc, xs, &status)) { vs_scsidone(xs, status); } if (CRSW & M_CRSW_ER) CRB_CLR_ER(CRSW); CRB_CLR_DONE(CRSW); if (xs->flags & ITSDONE) break; } return (COMPLETE); } void thaw_queue(sc, target) struct vs_softc *sc; u_int8_t target; { u_short t; t = target << 8; t |= 0x0001; THAW_REG = t; /* loop until thawed */ while (THAW_REG & 0x01); } void vs_scsidone (xs, stat) struct scsi_xfer *xs; int stat; { struct scsi_link *slp = xs->sc_link; struct vs_softc *sc = slp->adapter_softc; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; xs->status = stat; while (xs->status == SCSI_CHECK) { vs_chksense(xs); thaw_queue(sc, slp->target + 1); } xs->flags |= ITSDONE; /*sc->sc_tinfo[slp->target].cmds++;*/ if (CRSW & M_CRSW_ER) CRB_CLR_ER(CRSW); CRB_CLR_DONE(CRSW); thaw_queue(sc, slp->target + 1); szero(riopb, sizeof(M328_IOPB)); scsi_done(xs); } int vs_scsicmd(xs) struct scsi_xfer *xs; { struct scsi_link *slp = xs->sc_link; struct vs_softc *sc = slp->adapter_softc; int flags; unsigned long buf, len; u_short iopb_len; M328_CQE *mc = (M328_CQE*)&sc->sc_vsreg->sh_MCE; M328_CRB *crb = (M328_CRB *)&sc->sc_vsreg->sh_CRB; M328_IOPB *miopb = (M328_IOPB *)&sc->sc_vsreg->sh_MCE_IOPB; M328_CQE *cqep; M328_IOPB *iopb; M328_CMD *m328_cmd; /* If the target doesn't exist, abort */ if (!sc->sc_tinfo[slp->target].avail) { xs->error = XS_SELTIMEOUT; xs->status = -1; xs->flags |= ITSDONE; scsi_done(xs); } flags = xs->flags; #ifdef SDEBUG printf("scsi_cmd() "); if (xs->cmd->opcode == 0) { printf("TEST_UNIT_READY "); } else if (xs->cmd->opcode == REQUEST_SENSE) { printf("REQUEST_SENSE "); } else if (xs->cmd->opcode == INQUIRY) { printf("INQUIRY "); } else if (xs->cmd->opcode == MODE_SELECT) { printf("MODE_SELECT "); } else if (xs->cmd->opcode == MODE_SENSE) { printf("MODE_SENSE "); } else if (xs->cmd->opcode == START_STOP) { printf("START_STOP "); } else if (xs->cmd->opcode == RESERVE) { printf("RESERVE "); } else if (xs->cmd->opcode == RELEASE) { printf("RELEASE "); } else if (xs->cmd->opcode == PREVENT_ALLOW) { printf("PREVENT_ALLOW "); } else if (xs->cmd->opcode == POSITION_TO_ELEMENT) { printf("POSITION_TO_EL "); } else if (xs->cmd->opcode == CHANGE_DEFINITION) { printf("CHANGE_DEF "); } else if (xs->cmd->opcode == MODE_SENSE_BIG) { printf("MODE_SENSE_BIG "); } else if (xs->cmd->opcode == MODE_SELECT_BIG) { printf("MODE_SELECT_BIG "); } else if (xs->cmd->opcode == 0x25) { printf("READ_CAPACITY "); } else if (xs->cmd->opcode == 0x08) { printf("READ_COMMAND "); } #endif if (flags & SCSI_POLL) { cqep = mc; iopb = miopb; } else { cqep = vs_getcqe(sc); if (cqep == NULL) { return (TRY_AGAIN_LATER); } iopb = vs_getiopb(sc); } /* s = splbio();*/ iopb_len = sizeof(M328_short_IOPB) + xs->cmdlen; szero(iopb, sizeof(M328_IOPB)); scopy(xs->cmd, &iopb->iopb_SCSI[0], xs->cmdlen); iopb->iopb_CMD = IOPB_SCSI; #if 0 LV(iopb->iopb_BUFF, kvtop(xs->data)); LV(iopb->iopb_LENGTH, xs->datalen); #endif iopb->iopb_UNIT = slp->lun << 3; iopb->iopb_UNIT |= slp->target; iopb->iopb_NVCT = (u_char)sc->sc_nvec; iopb->iopb_EVCT = (u_char)sc->sc_evec; /* * Since the 88k's don't support cache snooping, we have * to flush the cache for a write and flush with inval for * a read, prior to starting the IO. */ if (xs->flags & SCSI_DATA_IN) { /* read */ #if defined(mvme88k) dma_cachectl(xs->data, xs->datalen, DMA_CACHE_SYNC_INVAL); #endif iopb->iopb_OPTION |= OPT_READ; } else { /* write */ #if defined(mvme88k) dma_cachectl(xs->data, xs->datalen, DMA_CACHE_SYNC); #endif iopb->iopb_OPTION |= OPT_WRITE; } if (flags & SCSI_POLL) { iopb->iopb_OPTION |= OPT_INTDIS; iopb->iopb_LEVEL = 0; } else { iopb->iopb_OPTION |= OPT_INTEN; iopb->iopb_LEVEL = sc->sc_ipl; } iopb->iopb_ADDR = ADDR_MOD; /* * Wait until we can use the command queue entry. * Should only have to wait if the master command * queue entry is busy. */ while (cqep->cqe_QECR & M_QECR_GO); cqep->cqe_IOPB_ADDR = OFF(iopb); cqep->cqe_IOPB_LENGTH = iopb_len; if (flags & SCSI_POLL) { cqep->cqe_WORK_QUEUE = slp->target + 1; } else { cqep->cqe_WORK_QUEUE = slp->target + 1; } MALLOC(m328_cmd, M328_CMD*, sizeof(M328_CMD), M_DEVBUF, M_WAITOK); m328_cmd->xs = xs; if (xs->datalen) { m328_cmd->top_sg_list = vs_build_memory_structure(xs, iopb); } else { m328_cmd->top_sg_list = (M328_SG)0; } LV(cqep->cqe_CTAG, m328_cmd); if (crb->crb_CRSW & M_CRSW_AQ) { cqep->cqe_QECR = M_QECR_AA; } VL(buf, iopb->iopb_BUFF); VL(len, iopb->iopb_LENGTH); #ifdef SDEBUG printf("tgt %d lun %d buf %x len %d wqn %d ipl %d\n", slp->target, slp->lun, buf, len, cqep->cqe_WORK_QUEUE, iopb->iopb_LEVEL); #endif cqep->cqe_QECR |= M_QECR_GO; if (flags & SCSI_POLL) { /* poll for the command to complete */ /*splx(s);*/ vs_poll(sc, xs); return (COMPLETE); } /*splx(s);*/ return (SUCCESSFULLY_QUEUED); } void vs_chksense(xs) struct scsi_xfer *xs; { int s; struct scsi_link *slp = xs->sc_link; struct vs_softc *sc = slp->adapter_softc; struct scsi_sense *ss; M328_CQE *mc = (M328_CQE*)&sc->sc_vsreg->sh_MCE; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; M328_IOPB *miopb = (M328_IOPB *)&sc->sc_vsreg->sh_MCE_IOPB; /* ack and clear the error */ CRB_CLR_DONE(CRSW); CRB_CLR_ER(CRSW); xs->status = 0; szero(miopb, sizeof(M328_IOPB)); /* This is a command, so point to it */ ss = (void *)&miopb->iopb_SCSI[0]; szero(ss, sizeof(*ss)); ss->opcode = REQUEST_SENSE; ss->byte2 = slp->lun << 5; ss->length = sizeof(struct scsi_sense_data); miopb->iopb_CMD = IOPB_SCSI; miopb->iopb_OPTION = OPT_READ; miopb->iopb_NVCT = (u_char)sc->sc_nvec; miopb->iopb_EVCT = (u_char)sc->sc_evec; miopb->iopb_LEVEL = 0; /*sc->sc_ipl;*/ miopb->iopb_ADDR = ADDR_MOD; LV(miopb->iopb_BUFF, kvtop((vaddr_t)&xs->sense)); LV(miopb->iopb_LENGTH, sizeof(struct scsi_sense_data)); szero(mc, sizeof(M328_CQE)); mc->cqe_IOPB_ADDR = OFF(miopb); mc->cqe_IOPB_LENGTH = sizeof(M328_short_IOPB) + sizeof(struct scsi_sense); mc->cqe_WORK_QUEUE = 0; mc->cqe_QECR = M_QECR_GO; /* poll for the command to complete */ s = splbio(); do_vspoll(sc, 0, 1); /* if (xs->cmd->opcode != PREVENT_ALLOW) { xs->error = XS_SENSE; } */ xs->status = riopb->iopb_STATUS >> 8; #ifdef SDEBUG scsi_print_sense(xs); #endif splx(s); } M328_CQE * vs_getcqe(sc) struct vs_softc *sc; { M328_MCSB *mcsb = (M328_MCSB *)&sc->sc_vsreg->sh_MCSB; M328_CQE *cqep; cqep = (M328_CQE *)&sc->sc_vsreg->sh_CQE[mcsb->mcsb_QHDP]; if (cqep->cqe_QECR & M_QECR_GO) return NULL; /* Hopefully, this will never happen */ mcsb->mcsb_QHDP++; if (mcsb->mcsb_QHDP == NUM_CQE) mcsb->mcsb_QHDP = 0; szero(cqep, sizeof(M328_CQE)); return cqep; } M328_IOPB * vs_getiopb(sc) struct vs_softc *sc; { M328_MCSB *mcsb = (M328_MCSB *)&sc->sc_vsreg->sh_MCSB; M328_IOPB *iopb; int slot; if (mcsb->mcsb_QHDP == 0) { slot = NUM_CQE - 1; } else { slot = mcsb->mcsb_QHDP - 1; } iopb = (M328_IOPB *)&sc->sc_vsreg->sh_IOPB[slot]; szero(iopb, sizeof(M328_IOPB)); return iopb; } void vs_initialize(sc) struct vs_softc *sc; { M328_CIB *cib = (M328_CIB *)&sc->sc_vsreg->sh_CIB; M328_CQE *mc = (M328_CQE*)&sc->sc_vsreg->sh_MCE; M328_CRB *crb = (M328_CRB *)&sc->sc_vsreg->sh_CRB; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; M328_MCSB *mcsb = (M328_MCSB *)&sc->sc_vsreg->sh_MCSB; M328_IOPB *iopb; M328_WQCF *wiopb = (M328_WQCF *)&sc->sc_vsreg->sh_MCE_IOPB; u_short i, crsw; int failed = 0; CRB_CLR_DONE(CRSW); szero(cib, sizeof(M328_CIB)); mcsb->mcsb_QHDP = 0; sc->sc_qhp = 0; cib->cib_NCQE = 10; cib->cib_BURST = 0; cib->cib_NVECT = sc->sc_ipl << 8; cib->cib_NVECT |= sc->sc_nvec; cib->cib_EVECT = sc->sc_ipl << 8; cib->cib_EVECT |= sc->sc_evec; cib->cib_PID = 0x07; cib->cib_SID = 0x00; cib->cib_CRBO = OFF(crb); cib->cib_SELECT_msw = HI(SELECTION_TIMEOUT); cib->cib_SELECT_lsw = LO(SELECTION_TIMEOUT); cib->cib_WQ0TIMO_msw = HI(4); cib->cib_WQ0TIMO_lsw = LO(4); cib->cib_VMETIMO_msw = 0; /*HI(VME_BUS_TIMEOUT);*/ cib->cib_VMETIMO_lsw = 0; /*LO(VME_BUS_TIMEOUT);*/ cib->cib_SBRIV = sc->sc_ipl << 8; cib->cib_SBRIV |= sc->sc_evec; cib->cib_SOF0 = 0x15; cib->cib_SRATE0 = 100/4; cib->cib_SOF1 = 0x0; cib->cib_SRATE1 = 0x0; iopb = (M328_IOPB *)&sc->sc_vsreg->sh_MCE_IOPB; szero(iopb, sizeof(M328_IOPB)); iopb->iopb_CMD = CNTR_INIT; iopb->iopb_OPTION = 0; iopb->iopb_NVCT = (u_char)sc->sc_nvec; iopb->iopb_EVCT = (u_char)sc->sc_evec; iopb->iopb_LEVEL = 0; /*sc->sc_ipl;*/ iopb->iopb_ADDR = SHIO_MOD; LV(iopb->iopb_BUFF, OFF(cib)); LV(iopb->iopb_LENGTH, sizeof(M328_CIB)); szero(mc, sizeof(M328_CQE)); mc->cqe_IOPB_ADDR = OFF(iopb); mc->cqe_IOPB_LENGTH = sizeof(M328_IOPB); mc->cqe_WORK_QUEUE = 0; mc->cqe_QECR = M_QECR_GO; /* poll for the command to complete */ do_vspoll(sc, 0, 1); CRB_CLR_DONE(CRSW); /* initialize work queues */ for (i=1; i<8; i++) { szero(wiopb, sizeof(M328_IOPB)); wiopb->wqcf_CMD = CNTR_INIT_WORKQ; wiopb->wqcf_OPTION = 0; wiopb->wqcf_NVCT = (u_char)sc->sc_nvec; wiopb->wqcf_EVCT = (u_char)sc->sc_evec; wiopb->wqcf_ILVL = 0; /*sc->sc_ipl;*/ wiopb->wqcf_WORKQ = i; wiopb->wqcf_WOPT = (WQO_FOE | WQO_INIT); wiopb->wqcf_SLOTS = JAGUAR_MAX_Q_SIZ; LV(wiopb->wqcf_CMDTO, 2); szero(mc, sizeof(M328_CQE)); mc->cqe_IOPB_ADDR = OFF(wiopb); mc->cqe_IOPB_LENGTH = sizeof(M328_IOPB); mc->cqe_WORK_QUEUE = 0; mc->cqe_QECR = M_QECR_GO; /* poll for the command to complete */ do_vspoll(sc, 0, 1); if (CRSW & M_CRSW_ER) { /*printf("\nerror: queue %d status = 0x%x\n", i, riopb->iopb_STATUS);*/ /*failed = 1;*/ CRB_CLR_ER(CRSW); } CRB_CLR_DONE(CRSW); delay(500); } /* start queue mode */ CRSW = 0; mcsb->mcsb_MCR |= M_MCR_SQM; crsw = CRSW; do_vspoll(sc, 0, 1); if (CRSW & M_CRSW_ER) { printf("error: status = 0x%x\n", riopb->iopb_STATUS); CRB_CLR_ER(CRSW); } CRB_CLR_DONE(CRSW); if (failed) { printf(": failed!\n"); return; } /* reset SCSI bus */ vs_reset(sc); /* sync all devices */ vs_resync(sc); printf(": target %d\n", sc->sc_link.adapter_target); } void vs_resync(sc) struct vs_softc *sc; { M328_CQE *mc = (M328_CQE*)&sc->sc_vsreg->sh_MCE; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; M328_DRCF *devreset = (M328_DRCF *)&sc->sc_vsreg->sh_MCE_IOPB; u_short i; for (i=0; i<7; i++) { szero(devreset, sizeof(M328_DRCF)); devreset->drcf_CMD = CNTR_DEV_REINIT; devreset->drcf_OPTION = 0x00; /* no interrupts yet... */ devreset->drcf_NVCT = sc->sc_nvec; devreset->drcf_EVCT = sc->sc_evec; devreset->drcf_ILVL = 0; devreset->drcf_UNIT = i; szero(mc, sizeof(M328_CQE)); mc->cqe_IOPB_ADDR = OFF(devreset); mc->cqe_IOPB_LENGTH = sizeof(M328_DRCF); mc->cqe_WORK_QUEUE = 0; mc->cqe_QECR = M_QECR_GO; /* poll for the command to complete */ do_vspoll(sc, 0, 0); if (riopb->iopb_STATUS) { sc->sc_tinfo[i].avail = 0; } else { sc->sc_tinfo[i].avail = 1; } if (CRSW & M_CRSW_ER) { CRB_CLR_ER(CRSW); } CRB_CLR_DONE(CRSW); } } void vs_reset(sc) struct vs_softc *sc; { u_int s; M328_CQE *mc = (M328_CQE*)&sc->sc_vsreg->sh_MCE; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; M328_SRCF *reset = (M328_SRCF *)&sc->sc_vsreg->sh_MCE_IOPB; szero(reset, sizeof(M328_SRCF)); reset->srcf_CMD = IOPB_RESET; reset->srcf_OPTION = 0x00; /* no interrupts yet... */ reset->srcf_NVCT = sc->sc_nvec; reset->srcf_EVCT = sc->sc_evec; reset->srcf_ILVL = 0; reset->srcf_BUSID = 0; s = splbio(); szero(mc, sizeof(M328_CQE)); mc->cqe_IOPB_ADDR = OFF(reset); mc->cqe_IOPB_LENGTH = sizeof(M328_SRCF); mc->cqe_WORK_QUEUE = 0; mc->cqe_QECR = M_QECR_GO; /* poll for the command to complete */ for (;;) { do_vspoll(sc, 0, 0); /* ack & clear scsi error condition cause by reset */ if (CRSW & M_CRSW_ER) { CRB_CLR_ER(CRSW); CRB_CLR_DONE(CRSW); riopb->iopb_STATUS = 0; break; } CRB_CLR_DONE(CRSW); } /* thaw all work queues */ thaw_queue(sc, 0xFF); splx(s); } /* * Process an interrupt from the MVME328 * We'll generally update: xs->{flags,resid,error,sense,status} and * occasionally xs->retries. */ int vs_checkintr(sc, xs, status) struct vs_softc *sc; struct scsi_xfer *xs; int *status; { int target = -1; int lun = -1; M328_IOPB *riopb = (M328_IOPB *)&sc->sc_vsreg->sh_RET_IOPB; struct scsi_generic *cmd; u_long buf; u_long len; u_char error; target = xs->sc_link->target; lun = xs->sc_link->lun; cmd = (struct scsi_generic *)&riopb->iopb_SCSI[0]; VL(buf, riopb->iopb_BUFF); VL(len, riopb->iopb_LENGTH); *status = riopb->iopb_STATUS >> 8; error = riopb->iopb_STATUS & 0xFF; #ifdef SDEBUG printf("scsi_chk() "); if (xs->cmd->opcode == 0) { printf("TEST_UNIT_READY "); } else if (xs->cmd->opcode == REQUEST_SENSE) { printf("REQUEST_SENSE "); } else if (xs->cmd->opcode == INQUIRY) { printf("INQUIRY "); } else if (xs->cmd->opcode == MODE_SELECT) { printf("MODE_SELECT "); } else if (xs->cmd->opcode == MODE_SENSE) { printf("MODE_SENSE "); } else if (xs->cmd->opcode == START_STOP) { printf("START_STOP "); } else if (xs->cmd->opcode == RESERVE) { printf("RESERVE "); } else if (xs->cmd->opcode == RELEASE) { printf("RELEASE "); } else if (xs->cmd->opcode == PREVENT_ALLOW) { printf("PREVENT_ALLOW "); } else if (xs->cmd->opcode == POSITION_TO_ELEMENT) { printf("POSITION_TO_EL "); } else if (xs->cmd->opcode == CHANGE_DEFINITION) { printf("CHANGE_DEF "); } else if (xs->cmd->opcode == MODE_SENSE_BIG) { printf("MODE_SENSE_BIG "); } else if (xs->cmd->opcode == MODE_SELECT_BIG) { printf("MODE_SELECT_BIG "); } else if (xs->cmd->opcode == 0x25) { printf("READ_CAPACITY "); } else if (xs->cmd->opcode == 0x08) { printf("READ_COMMAND "); } printf("tgt %d lun %d buf %x len %d status %x ", target, lun, buf, len, riopb->iopb_STATUS); if (CRSW & M_CRSW_EX) { printf("[ex]"); } if (CRSW & M_CRSW_QMS) { printf("[qms]"); } if (CRSW & M_CRSW_SC) { printf("[sc]"); } if (CRSW & M_CRSW_SE) { printf("[se]"); } if (CRSW & M_CRSW_AQ) { printf("[aq]"); } if (CRSW & M_CRSW_ER) { printf("[er]"); } printf("\n"); #endif if (len != xs->datalen) { xs->resid = xs->datalen - len; } else { xs->resid = 0; } if (error == SCSI_SELECTION_TO) { xs->error = XS_SELTIMEOUT; xs->status = -1; *status = -1; } return 1; } void vs_intr(arg) void *arg; { struct vs_softc *sc = (struct vs_softc *)arg; M328_CRB *crb = (M328_CRB *)&sc->sc_vsreg->sh_CRB; struct scsi_xfer *xs; M328_CMD *m328_cmd; unsigned long loc; int status; int s; s = splbio(); /* Got a valid interrupt on this device */ VL(loc, crb->crb_CTAG); #ifdef SDEBUG printf("Interrupt!!! "); printf("loc == 0x%x\n", loc); #endif /* * If this is a controller error, there won't be a m328_cmd * pointer in the CTAG feild. Bad things happen if you try * to point to address 0. Controller error should be handled * in vsdma.c I'll change this soon - steve. */ if (loc) { m328_cmd = (M328_CMD *)loc; xs = m328_cmd->xs; if (m328_cmd->top_sg_list) { vs_dealloc_scatter_gather(m328_cmd->top_sg_list); m328_cmd->top_sg_list = (M328_SG)0; } FREE(m328_cmd, M_DEVBUF); /* free the command tag */ if (vs_checkintr (sc, xs, &status)) { vs_scsidone(xs, status); } } splx(s); } /* * Useful functions for scatter/gather list */ M328_SG vs_alloc_scatter_gather() { M328_SG sg; MALLOC(sg, M328_SG, sizeof(struct m328_sg), M_DEVBUF, M_WAITOK); bzero(sg, sizeof(struct m328_sg)); return (sg); } void vs_dealloc_scatter_gather(sg) M328_SG sg; { int i; if (sg->level > 0) { for (i = 0; sg->down[i] && idown[i]); } } FREE(sg, M_DEVBUF); } void vs_link_sg_element(element, phys_add, len) sg_list_element_t *element; vaddr_t phys_add; int len; { element->count.bytes = len; LV(element->address, phys_add); element->link = 0; /* FALSE */ element->transfer_type = NORMAL_TYPE; element->memory_type = LONG_TRANSFER; element->address_modifier = 0xD; } void vs_link_sg_list(list, phys_add, elements) sg_list_element_t *list; vaddr_t phys_add; int elements; { list->count.scatter.gather = elements; LV(list->address, phys_add); list->link = 1; /* TRUE */ list->transfer_type = NORMAL_TYPE; list->memory_type = LONG_TRANSFER; list->address_modifier = 0xD; } M328_SG vs_build_memory_structure(xs, iopb) struct scsi_xfer *xs; M328_IOPB *iopb; /* the iopb */ { M328_SG sg; vaddr_t starting_point_virt, point_virt, virt; paddr_t starting_point_phys, point1_phys, point2_phys; u_int len; int level; sg = (M328_SG)0; /* Hopefully we need no scatter/gather list */ /* * We have the following things: * virt the virtual address of the contiguous virtual * memory block * len the length of the contiguous virtual memory * block * starting_point_virt the virtual address of the contiguous * *physical* memory block * starting_point_phys the *physical* address of the contiguous * *physical* memory block * point_virt the pointer to the virtual memory we are * checking at the moment * point1_phys the pointer to the *physical* memory we are * checking at the moment * point2_phys the pointer to the *physical* memory we are * checking at the moment */ level = 0; virt = starting_point_virt = (vaddr_t)xs->data; point1_phys = starting_point_phys = kvtop((vaddr_t)xs->data); len = xs->datalen; /* * Check if we need scatter/gather */ if (len > PAGE_SIZE) { for (level = 0, point_virt = round_page(starting_point_virt+1); /* if we do already scatter/gather we have to stay in the loop and jump */ point_virt < virt + (vaddr_t)len || sg; point_virt += PAGE_SIZE) { /* out later */ point2_phys = kvtop(point_virt); if ((point2_phys - trunc_page(point1_phys) - PAGE_SIZE) || /* physical memory is not contiguous */ (point_virt - starting_point_virt >= MAX_SG_BLOCK_SIZE && sg)) { /* we only can access (1<<16)-1 bytes in scatter/gather_mode */ if (point_virt - starting_point_virt >= MAX_SG_BLOCK_SIZE) { /* We were walking too far for one scatter/gather block ... */ assert( MAX_SG_BLOCK_SIZE > PAGE_SIZE ); point_virt = trunc_page(starting_point_virt + MAX_SG_BLOCK_SIZE-1); /* So go back to the beginning of the last matching page and generate the physical address of this location for the next time. */ point2_phys = kvtop(point_virt); } if (!sg) { /* We allocate our fist scatter/gather list */ sg = vs_alloc_scatter_gather(); } #if 1 /* broken firmware */ if (sg->elements >= MAX_SG_ELEMENTS) { vs_dealloc_scatter_gather(sg); return (NULL); } #else /* if the firmware will ever get fixed */ while (sg->elements >= MAX_SG_ELEMENTS) { /* If the list full in this layer ? */ if (!sg->up) { sg->up = vs_alloc_scatter_gather(); sg->up->level = sg->level+1; sg->up->down[0] = sg; sg->up->elements = 1; } /* link this full list also in physical memory */ vs_link_sg_list( &(sg->up->list[ sg->up->elements - 1]), kvtop((vaddr_t)sg->list), sg->elements); sg = sg->up; /* Climb up */ } /* As long as we are not a the base level */ while (sg->level) { int i; i = sg->elements; /* We need a new element */ sg->down[i] = vs_alloc_scatter_gather(); sg->down[i]->level = sg->level - 1; sg->down[i]->up = sg; sg->elements++; sg = sg->down[i]; /* Climb down */ } #endif /* 1 */ if (point_virt < virt+(vaddr_t)len) { /* linking element */ vs_link_sg_element( &(sg->list[sg->elements]), starting_point_phys, point_virt-starting_point_virt); sg->elements++; } else { /* linking last element */ vs_link_sg_element( &(sg->list[sg->elements]), starting_point_phys, (vaddr_t)(virt + len) - starting_point_virt); sg->elements++; break; /* We have now collected all blocks */ } starting_point_virt = point_virt; starting_point_phys = point2_phys; } point1_phys = point2_phys; } } /* * Climb up along the right side of the tree until we reach the top. */ if (sg) { while (sg->up) { /* link this list also in physical memory */ vs_link_sg_list(&(sg->up->list[sg->up->elements-1]), kvtop((vaddr_t)sg->list), sg->elements); sg = sg->up; /* Climb up */ } iopb->iopb_OPTION |= M_OPT_SG; iopb->iopb_ADDR |= M_ADR_SG_LINK; LV(iopb->iopb_BUFF, kvtop((vaddr_t)sg->list)); LV(iopb->iopb_LENGTH, sg->elements); LV(iopb->iopb_SGTTL, len); } else { /* no scatter/gather necessary */ LV(iopb->iopb_BUFF, starting_point_phys); LV(iopb->iopb_LENGTH, len); } return (sg); }