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IABSD.fr/src/sys/dev/ic/siop_common.c
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- sys/dev/ic/siop_common.c
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/* $OpenBSD: siop_common.c,v 1.46 2024/09/01 03:08:56 jsg Exp $ */ /* $NetBSD: siop_common.c,v 1.37 2005/02/27 00:27:02 perry Exp $ */ /* * Copyright (c) 2000, 2002 Manuel Bouyer. * * 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. * */ /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/malloc.h> #include <sys/buf.h> #include <sys/kernel.h> #include <sys/scsiio.h> #include <sys/endian.h> #include <machine/bus.h> #include <scsi/scsi_all.h> #include <scsi/scsi_message.h> #include <scsi/scsiconf.h> #define SIOP_NEEDS_PERIOD_TABLES #include <dev/ic/siopreg.h> #include <dev/ic/siopvar_common.h> #include <dev/ic/siopvar.h> #undef DEBUG #undef DEBUG_DR #undef DEBUG_NEG int siop_common_attach(struct siop_common_softc *sc) { int error, i, buswidth; bus_dma_segment_t seg; int rseg; /* * Allocate DMA-safe memory for the script and map it. */ if ((sc->features & SF_CHIP_RAM) == 0) { error = bus_dmamem_alloc(sc->sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to allocate script DMA memory, " "error = %d\n", sc->sc_dev.dv_xname, error); return error; } error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, PAGE_SIZE, (caddr_t *)&sc->sc_script, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); if (error) { printf("%s: unable to map script DMA memory, " "error = %d\n", sc->sc_dev.dv_xname, error); return error; } error = bus_dmamap_create(sc->sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, BUS_DMA_NOWAIT, &sc->sc_scriptdma); if (error) { printf("%s: unable to create script DMA map, " "error = %d\n", sc->sc_dev.dv_xname, error); return error; } error = bus_dmamap_load(sc->sc_dmat, sc->sc_scriptdma, sc->sc_script, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: unable to load script DMA map, " "error = %d\n", sc->sc_dev.dv_xname, error); return error; } sc->sc_scriptaddr = sc->sc_scriptdma->dm_segs[0].ds_addr; sc->ram_size = PAGE_SIZE; } /* * sc->sc_link is the template for all device sc_link's * for devices attached to this adapter. It is passed to * the upper layers in config_found(). */ buswidth = (sc->features & SF_BUS_WIDE) ? 16 : 8; sc->sc_id = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCID); if (sc->sc_id == 0 || sc->sc_id >= buswidth) sc->sc_id = SIOP_DEFAULT_TARGET; for (i = 0; i < 16; i++) sc->targets[i] = NULL; /* find min/max sync period for this chip */ sc->st_maxsync = 0; sc->dt_maxsync = 0; sc->st_minsync = 255; sc->dt_minsync = 255; for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]); i++) { if (sc->clock_period != scf_period[i].clock) continue; if (sc->st_maxsync < scf_period[i].period) sc->st_maxsync = scf_period[i].period; if (sc->st_minsync > scf_period[i].period) sc->st_minsync = scf_period[i].period; } if (sc->st_maxsync == 255 || sc->st_minsync == 0) panic("siop: can't find my sync parameters"); for (i = 0; i < sizeof(dt_scf_period) / sizeof(dt_scf_period[0]); i++) { if (sc->clock_period != dt_scf_period[i].clock) continue; if (sc->dt_maxsync < dt_scf_period[i].period) sc->dt_maxsync = dt_scf_period[i].period; if (sc->dt_minsync > dt_scf_period[i].period) sc->dt_minsync = dt_scf_period[i].period; } if (sc->dt_maxsync == 255 || sc->dt_minsync == 0) panic("siop: can't find my sync parameters"); return 0; } void siop_common_reset(struct siop_common_softc *sc) { u_int32_t stest3; /* reset the chip */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_ISTAT, ISTAT_SRST); delay(1000); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_ISTAT, 0); /* init registers */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL0, SCNTL0_ARB_MASK | SCNTL0_EPC | SCNTL0_AAP); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1, 0); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, sc->clock_div); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER, 0); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DIEN, 0xff); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SIEN0, 0xff & ~(SIEN0_CMP | SIEN0_SEL | SIEN0_RSL)); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SIEN1, 0xff & ~(SIEN1_HTH | SIEN1_GEN)); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2, 0); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3, STEST3_TE); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STIME0, (0xb << STIME0_SEL_SHIFT)); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCID, sc->sc_id | SCID_RRE); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_RESPID0, 1 << sc->sc_id); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_DCNTL, (sc->features & SF_CHIP_PF) ? DCNTL_COM | DCNTL_PFEN : DCNTL_COM); if (sc->features & SF_CHIP_AAIP) bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_AIPCNTL1, AIPCNTL1_DIS); /* enable clock doubler or quadrupler if appropriate */ if (sc->features & (SF_CHIP_DBLR | SF_CHIP_QUAD)) { stest3 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1, STEST1_DBLEN); if (sc->features & SF_CHIP_QUAD) { /* wait for PPL to lock */ while ((bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST4) & STEST4_LOCK) == 0) delay(10); } else { /* data sheet says 20us - more won't hurt */ delay(100); } /* halt scsi clock, select doubler/quad, restart clock */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3, stest3 | STEST3_HSC); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1, STEST1_DBLEN | STEST1_DBLSEL); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST3, stest3); } else { bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST1, 0); } if (sc->features & SF_CHIP_FIFO) bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST5, bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST5) | CTEST5_DFS); if (sc->features & SF_CHIP_LED0) { /* Set GPIO0 as output if software LED control is required */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_GPCNTL, bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_GPCNTL) & 0xfe); } if (sc->features & SF_BUS_ULTRA3) { /* reset SCNTL4 */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL4, 0); } sc->mode = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST4) & STEST4_MODE_MASK; /* * initialise the RAM. Without this we may get scsi gross errors on * the 1010 */ if (sc->features & SF_CHIP_RAM) bus_space_set_region_4(sc->sc_ramt, sc->sc_ramh, 0, 0, sc->ram_size / 4); sc->sc_reset(sc); } /* prepare tables before sending a cmd */ void siop_setuptables(struct siop_common_cmd *siop_cmd) { int i; struct siop_common_softc *sc = siop_cmd->siop_sc; struct scsi_xfer *xs = siop_cmd->xs; int target = xs->sc_link->target; int lun = xs->sc_link->lun; int msgoffset = 1; int *targ_flags = &sc->targets[target]->flags; int quirks; siop_cmd->siop_tables->id = siop_htoc32(sc, sc->targets[target]->id); memset(siop_cmd->siop_tables->msg_out, 0, sizeof(siop_cmd->siop_tables->msg_out)); /* request sense doesn't disconnect */ if (siop_cmd->status == CMDST_SENSE) siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 0); else if ((sc->features & SF_CHIP_GEBUG) && (sc->targets[target]->flags & TARF_ISWIDE) == 0) /* * 1010 bug: it seems that the 1010 has problems with reselect * when not in wide mode (generate false SCSI gross error). * The FreeBSD sym driver has comments about it but their * workaround (disable SCSI gross error reporting) doesn't * work with my adapter. So disable disconnect when not * wide. */ siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 0); else siop_cmd->siop_tables->msg_out[0] = MSG_IDENTIFY(lun, 1); siop_cmd->siop_tables->t_msgout.count = siop_htoc32(sc, msgoffset); if (sc->targets[target]->status == TARST_ASYNC) { *targ_flags &= TARF_DT; /* Save TARF_DT 'cuz we don't set it here */ quirks = xs->sc_link->quirks; if ((quirks & SDEV_NOTAGS) == 0) *targ_flags |= TARF_TAG; if (((quirks & SDEV_NOWIDE) == 0) && (sc->features & SF_BUS_WIDE)) *targ_flags |= TARF_WIDE; if ((quirks & SDEV_NOSYNC) == 0) *targ_flags |= TARF_SYNC; if ((sc->features & SF_CHIP_GEBUG) && (*targ_flags & TARF_WIDE) == 0) /* * 1010 workaround: can't do disconnect if not wide, * so can't do tag */ *targ_flags &= ~TARF_TAG; /* Safe to call siop_add_dev() multiple times */ siop_add_dev((struct siop_softc *)sc, target, lun); if ((*targ_flags & TARF_DT) && (sc->mode == STEST4_MODE_LVD)) { sc->targets[target]->status = TARST_PPR_NEG; siop_ppr_msg(siop_cmd, msgoffset, sc->dt_minsync, sc->maxoff); } else if (*targ_flags & TARF_WIDE) { sc->targets[target]->status = TARST_WIDE_NEG; siop_wdtr_msg(siop_cmd, msgoffset, MSG_EXT_WDTR_BUS_16_BIT); } else if (*targ_flags & TARF_SYNC) { sc->targets[target]->status = TARST_SYNC_NEG; siop_sdtr_msg(siop_cmd, msgoffset, sc->st_minsync, (sc->maxoff > 31) ? 31 : sc->maxoff); } else { sc->targets[target]->status = TARST_OK; siop_update_xfer_mode(sc, target); } } else if (sc->targets[target]->status == TARST_OK && (*targ_flags & TARF_TAG) && siop_cmd->status != CMDST_SENSE) { siop_cmd->flags |= CMDFL_TAG; } siop_cmd->siop_tables->status = siop_htoc32(sc, SCSI_SIOP_NOSTATUS); /* set invalid status */ if ((xs->flags & (SCSI_DATA_IN | SCSI_DATA_OUT)) || siop_cmd->status == CMDST_SENSE) { bzero(siop_cmd->siop_tables->data, sizeof(siop_cmd->siop_tables->data)); for (i = 0; i < siop_cmd->dmamap_data->dm_nsegs; i++) { siop_cmd->siop_tables->data[i].count = siop_htoc32(sc, siop_cmd->dmamap_data->dm_segs[i].ds_len); siop_cmd->siop_tables->data[i].addr = siop_htoc32(sc, siop_cmd->dmamap_data->dm_segs[i].ds_addr); } } } int siop_wdtr_neg(struct siop_common_cmd *siop_cmd) { struct siop_common_softc *sc = siop_cmd->siop_sc; struct siop_common_target *siop_target = siop_cmd->siop_target; int target = siop_cmd->xs->sc_link->target; struct siop_common_xfer *tables = siop_cmd->siop_tables; if (siop_target->status == TARST_WIDE_NEG) { /* we initiated wide negotiation */ switch (tables->msg_in[3]) { case MSG_EXT_WDTR_BUS_8_BIT: siop_target->flags &= ~TARF_ISWIDE; sc->targets[target]->id &= ~(SCNTL3_EWS << 24); break; case MSG_EXT_WDTR_BUS_16_BIT: if (siop_target->flags & TARF_WIDE) { siop_target->flags |= TARF_ISWIDE; sc->targets[target]->id |= (SCNTL3_EWS << 24); break; } /* FALLTHROUGH */ default: /* * hum, we got more than what we can handle, shouldn't * happen. Reject, and stay async */ siop_target->flags &= ~TARF_ISWIDE; siop_target->status = TARST_OK; siop_target->offset = siop_target->period = 0; siop_update_xfer_mode(sc, target); printf("%s: rejecting invalid wide negotiation from " "target %d (%d)\n", sc->sc_dev.dv_xname, target, tables->msg_in[3]); tables->t_msgout.count = siop_htoc32(sc, 1); tables->msg_out[0] = MSG_MESSAGE_REJECT; return SIOP_NEG_MSGOUT; } tables->id = siop_htoc32(sc, sc->targets[target]->id); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, (sc->targets[target]->id >> 24) & 0xff); /* we now need to do sync */ if (siop_target->flags & TARF_SYNC) { siop_target->status = TARST_SYNC_NEG; siop_sdtr_msg(siop_cmd, 0, sc->st_minsync, (sc->maxoff > 31) ? 31 : sc->maxoff); return SIOP_NEG_MSGOUT; } else { siop_target->status = TARST_OK; siop_update_xfer_mode(sc, target); return SIOP_NEG_ACK; } } else { /* target initiated wide negotiation */ if (tables->msg_in[3] >= MSG_EXT_WDTR_BUS_16_BIT && (siop_target->flags & TARF_WIDE)) { siop_target->flags |= TARF_ISWIDE; sc->targets[target]->id |= SCNTL3_EWS << 24; } else { siop_target->flags &= ~TARF_ISWIDE; sc->targets[target]->id &= ~(SCNTL3_EWS << 24); } tables->id = siop_htoc32(sc, sc->targets[target]->id); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, (sc->targets[target]->id >> 24) & 0xff); /* * we did reset wide parameters, so fall back to async, * but don't schedule a sync neg, target should initiate it */ siop_target->status = TARST_OK; siop_target->offset = siop_target->period = 0; siop_update_xfer_mode(sc, target); siop_wdtr_msg(siop_cmd, 0, (siop_target->flags & TARF_ISWIDE) ? MSG_EXT_WDTR_BUS_16_BIT : MSG_EXT_WDTR_BUS_8_BIT); return SIOP_NEG_MSGOUT; } } int siop_ppr_neg(struct siop_common_cmd *siop_cmd) { struct siop_common_softc *sc = siop_cmd->siop_sc; struct siop_common_target *siop_target = siop_cmd->siop_target; int target = siop_cmd->xs->sc_link->target; struct siop_common_xfer *tables = siop_cmd->siop_tables; int sync, offset, options, scf = 0; int i; #ifdef DEBUG_NEG printf("%s: answer on ppr negotiation:", sc->sc_dev.dv_xname); for (i = 0; i < 8; i++) printf(" 0x%x", tables->msg_in[i]); printf("\n"); #endif if (siop_target->status == TARST_PPR_NEG) { /* we initiated PPR negotiation */ sync = tables->msg_in[3]; offset = tables->msg_in[5]; options = tables->msg_in[7]; if (options != MSG_EXT_PPR_PROT_DT) { /* shouldn't happen */ printf("%s: ppr negotiation for target %d: " "no DT option\n", sc->sc_dev.dv_xname, target); siop_target->status = TARST_ASYNC; siop_target->flags &= ~(TARF_DT | TARF_ISDT); siop_target->offset = 0; siop_target->period = 0; goto reject; } if (offset > sc->maxoff || sync < sc->dt_minsync || sync > sc->dt_maxsync) { printf("%s: ppr negotiation for target %d: " "offset (%d) or sync (%d) out of range\n", sc->sc_dev.dv_xname, target, offset, sync); /* should not happen */ siop_target->status = TARST_ASYNC; siop_target->flags &= ~(TARF_DT | TARF_ISDT); siop_target->offset = 0; siop_target->period = 0; goto reject; } else { for (i = 0; i < sizeof(dt_scf_period) / sizeof(dt_scf_period[0]); i++) { if (sc->clock_period != dt_scf_period[i].clock) continue; if (dt_scf_period[i].period == sync) { /* ok, found it. we now are sync. */ siop_target->offset = offset; siop_target->period = sync; scf = dt_scf_period[i].scf; siop_target->flags |= TARF_ISDT; } } if ((siop_target->flags & TARF_ISDT) == 0) { printf("%s: ppr negotiation for target %d: " "sync (%d) incompatible with adapter\n", sc->sc_dev.dv_xname, target, sync); /* * we didn't find it in our table, do async * send reject msg, start SDTR/WDTR neg */ siop_target->status = TARST_ASYNC; siop_target->flags &= ~(TARF_DT | TARF_ISDT); siop_target->offset = 0; siop_target->period = 0; goto reject; } } if (tables->msg_in[6] != 1) { printf("%s: ppr negotiation for target %d: " "transfer width (%d) incompatible with dt\n", sc->sc_dev.dv_xname, target, tables->msg_in[6]); /* DT mode can only be done with wide transfers */ siop_target->status = TARST_ASYNC; siop_target->flags &= ~(TARF_DT | TARF_ISDT); siop_target->offset = 0; siop_target->period = 0; goto reject; } siop_target->flags |= TARF_ISWIDE; sc->targets[target]->id |= (SCNTL3_EWS << 24); sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24); sc->targets[target]->id |= scf << (24 + SCNTL3_SCF_SHIFT); sc->targets[target]->id &= ~(SXFER_MO_MASK << 8); sc->targets[target]->id |= (siop_target->offset & SXFER_MO_MASK) << 8; sc->targets[target]->id &= ~0xff; sc->targets[target]->id |= SCNTL4_U3EN; siop_target->status = TARST_OK; siop_update_xfer_mode(sc, target); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, (sc->targets[target]->id >> 24) & 0xff); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER, (sc->targets[target]->id >> 8) & 0xff); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL4, sc->targets[target]->id & 0xff); return SIOP_NEG_ACK; } else { /* target initiated PPR negotiation, shouldn't happen */ printf("%s: rejecting invalid PPR negotiation from " "target %d\n", sc->sc_dev.dv_xname, target); reject: tables->t_msgout.count = siop_htoc32(sc, 1); tables->msg_out[0] = MSG_MESSAGE_REJECT; return SIOP_NEG_MSGOUT; } } int siop_sdtr_neg(struct siop_common_cmd *siop_cmd) { struct siop_common_softc *sc = siop_cmd->siop_sc; struct siop_common_target *siop_target = siop_cmd->siop_target; int target = siop_cmd->xs->sc_link->target; int sync, maxoffset, offset, i; int send_msgout = 0; struct siop_common_xfer *tables = siop_cmd->siop_tables; /* limit to Ultra/2 parameters, need PPR for Ultra/3 */ maxoffset = (sc->maxoff > 31) ? 31 : sc->maxoff; sync = tables->msg_in[3]; offset = tables->msg_in[4]; if (siop_target->status == TARST_SYNC_NEG) { /* we initiated sync negotiation */ siop_target->status = TARST_OK; #ifdef DEBUG printf("sdtr: sync %d offset %d\n", sync, offset); #endif if (offset > maxoffset || sync < sc->st_minsync || sync > sc->st_maxsync) goto reject; for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]); i++) { if (sc->clock_period != scf_period[i].clock) continue; if (scf_period[i].period == sync) { /* ok, found it. we now are sync. */ siop_target->offset = offset; siop_target->period = sync; sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24); sc->targets[target]->id |= scf_period[i].scf << (24 + SCNTL3_SCF_SHIFT); if (sync < 25 && /* Ultra */ (sc->features & SF_BUS_ULTRA3) == 0) sc->targets[target]->id |= SCNTL3_ULTRA << 24; else sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24); sc->targets[target]->id &= ~(SXFER_MO_MASK << 8); sc->targets[target]->id |= (offset & SXFER_MO_MASK) << 8; sc->targets[target]->id &= ~0xff; /* scntl4 */ goto end; } } /* * we didn't find it in our table, do async and send reject * msg */ reject: send_msgout = 1; tables->t_msgout.count = siop_htoc32(sc, 1); tables->msg_out[0] = MSG_MESSAGE_REJECT; sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24); sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24); sc->targets[target]->id &= ~(SXFER_MO_MASK << 8); sc->targets[target]->id &= ~0xff; /* scntl4 */ siop_target->offset = siop_target->period = 0; } else { /* target initiated sync neg */ #ifdef DEBUG printf("sdtr (target): sync %d offset %d\n", sync, offset); #endif if (offset == 0 || sync > sc->st_maxsync) { /* async */ goto async; } if (offset > maxoffset) offset = maxoffset; if (sync < sc->st_minsync) sync = sc->st_minsync; /* look for sync period */ for (i = 0; i < sizeof(scf_period) / sizeof(scf_period[0]); i++) { if (sc->clock_period != scf_period[i].clock) continue; if (scf_period[i].period == sync) { /* ok, found it. we now are sync. */ siop_target->offset = offset; siop_target->period = sync; sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24); sc->targets[target]->id |= scf_period[i].scf << (24 + SCNTL3_SCF_SHIFT); if (sync < 25 && /* Ultra */ (sc->features & SF_BUS_ULTRA3) == 0) sc->targets[target]->id |= SCNTL3_ULTRA << 24; else sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24); sc->targets[target]->id &= ~(SXFER_MO_MASK << 8); sc->targets[target]->id |= (offset & SXFER_MO_MASK) << 8; sc->targets[target]->id &= ~0xff; /* scntl4 */ siop_sdtr_msg(siop_cmd, 0, sync, offset); send_msgout = 1; goto end; } } async: siop_target->offset = siop_target->period = 0; sc->targets[target]->id &= ~(SCNTL3_SCF_MASK << 24); sc->targets[target]->id &= ~(SCNTL3_ULTRA << 24); sc->targets[target]->id &= ~(SXFER_MO_MASK << 8); sc->targets[target]->id &= ~0xff; /* scntl4 */ siop_sdtr_msg(siop_cmd, 0, 0, 0); send_msgout = 1; } end: if (siop_target->status == TARST_OK) siop_update_xfer_mode(sc, target); #ifdef DEBUG printf("id now 0x%x\n", sc->targets[target]->id); #endif tables->id = siop_htoc32(sc, sc->targets[target]->id); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL3, (sc->targets[target]->id >> 24) & 0xff); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SXFER, (sc->targets[target]->id >> 8) & 0xff); if (send_msgout) { return SIOP_NEG_MSGOUT; } else { return SIOP_NEG_ACK; } } void siop_sdtr_msg(struct siop_common_cmd *siop_cmd, int offset, int ssync, int soff) { siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED; siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_SDTR_LEN; siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_SDTR; siop_cmd->siop_tables->msg_out[offset + 3] = ssync; siop_cmd->siop_tables->msg_out[offset + 4] = soff; siop_cmd->siop_tables->t_msgout.count = siop_htoc32(siop_cmd->siop_sc, offset + MSG_EXT_SDTR_LEN + 2); } void siop_wdtr_msg(struct siop_common_cmd *siop_cmd, int offset, int wide) { siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED; siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_WDTR_LEN; siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_WDTR; siop_cmd->siop_tables->msg_out[offset + 3] = wide; siop_cmd->siop_tables->t_msgout.count = siop_htoc32(siop_cmd->siop_sc, offset + MSG_EXT_WDTR_LEN + 2); } void siop_ppr_msg(struct siop_common_cmd *siop_cmd, int offset, int ssync, int soff) { siop_cmd->siop_tables->msg_out[offset + 0] = MSG_EXTENDED; siop_cmd->siop_tables->msg_out[offset + 1] = MSG_EXT_PPR_LEN; siop_cmd->siop_tables->msg_out[offset + 2] = MSG_EXT_PPR; siop_cmd->siop_tables->msg_out[offset + 3] = ssync; siop_cmd->siop_tables->msg_out[offset + 4] = 0; /* reserved */ siop_cmd->siop_tables->msg_out[offset + 5] = soff; siop_cmd->siop_tables->msg_out[offset + 6] = 1; /* wide */ siop_cmd->siop_tables->msg_out[offset + 7] = MSG_EXT_PPR_PROT_DT; siop_cmd->siop_tables->t_msgout.count = siop_htoc32(siop_cmd->siop_sc, offset + MSG_EXT_PPR_LEN + 2); } void siop_ma(struct siop_common_cmd *siop_cmd) { int offset, dbc, sstat; struct siop_common_softc *sc = siop_cmd->siop_sc; scr_table_t *table; /* table with partial xfer */ /* * compute how much of the current table didn't get handled when * a phase mismatch occurs */ if ((siop_cmd->xs->flags & (SCSI_DATA_OUT | SCSI_DATA_IN)) == 0) return; /* no valid data transfer */ offset = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCRATCHA + 1); if (offset >= SIOP_NSG) { printf("%s: bad offset in siop_sdp (%d)\n", sc->sc_dev.dv_xname, offset); return; } table = &siop_cmd->siop_tables->data[offset]; #ifdef DEBUG_DR printf("siop_ma: offset %d count=%d addr=0x%x ", offset, table->count, table->addr); #endif dbc = bus_space_read_4(sc->sc_rt, sc->sc_rh, SIOP_DBC) & 0x00ffffff; if (siop_cmd->xs->flags & SCSI_DATA_OUT) { if (sc->features & SF_CHIP_DFBC) { dbc += bus_space_read_2(sc->sc_rt, sc->sc_rh, SIOP_DFBC); } else { /* need to account stale data in FIFO */ int dfifo = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_DFIFO); if (sc->features & SF_CHIP_FIFO) { dfifo |= (bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST5) & CTEST5_BOMASK) << 8; dbc += (dfifo - (dbc & 0x3ff)) & 0x3ff; } else { dbc += (dfifo - (dbc & 0x7f)) & 0x7f; } } sstat = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SSTAT0); if (sstat & SSTAT0_OLF) dbc++; if ((sstat & SSTAT0_ORF) && (sc->features & SF_CHIP_DFBC) == 0) dbc++; if (siop_cmd->siop_target->flags & TARF_ISWIDE) { sstat = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SSTAT2); if (sstat & SSTAT2_OLF1) dbc++; if ((sstat & SSTAT2_ORF1) && (sc->features & SF_CHIP_DFBC) == 0) dbc++; } /* clear the FIFO */ bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3, bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3) | CTEST3_CLF); } siop_cmd->flags |= CMDFL_RESID; siop_cmd->resid = dbc; } void siop_sdp(struct siop_common_cmd *siop_cmd, int offset) { struct siop_common_softc *sc = siop_cmd->siop_sc; scr_table_t *table; if ((siop_cmd->xs->flags & (SCSI_DATA_OUT | SCSI_DATA_IN))== 0) return; /* no data pointers to save */ /* * offset == SIOP_NSG may be a valid condition if we get a Save data * pointer when the xfer is done. Just ignore the Save data pointer * in this case */ if (offset == SIOP_NSG) return; #ifdef DIAGNOSTIC if (offset > SIOP_NSG) { sc_print_addr(siop_cmd->xs->sc_link); printf("offset %d > %d\n", offset, SIOP_NSG); panic("siop_sdp: offset"); } #endif /* * Save data pointer. We do this by adjusting the tables to point * at the beginning of the data not yet transferred. * offset points to the first table with untransferred data. */ /* * before doing that we decrease resid from the amount of data which * has been transferred. */ siop_update_resid(siop_cmd, offset); /* * First let see if we have a resid from a phase mismatch. If so, * we have to adjust the table at offset to remove transferred data. */ if (siop_cmd->flags & CMDFL_RESID) { siop_cmd->flags &= ~CMDFL_RESID; table = &siop_cmd->siop_tables->data[offset]; /* "cut" already transferred data from this table */ table->addr = siop_htoc32(sc, siop_ctoh32(sc, table->addr) + siop_ctoh32(sc, table->count) - siop_cmd->resid); table->count = siop_htoc32(sc, siop_cmd->resid); } /* * now we can remove entries which have been transferred. * We just move the entries with data left at the beginning of the * tables */ bcopy(&siop_cmd->siop_tables->data[offset], &siop_cmd->siop_tables->data[0], (SIOP_NSG - offset) * sizeof(scr_table_t)); } void siop_update_resid(struct siop_common_cmd *siop_cmd, int offset) { struct siop_common_softc *sc = siop_cmd->siop_sc; scr_table_t *table; int i; if ((siop_cmd->xs->flags & (SCSI_DATA_OUT | SCSI_DATA_IN)) == 0) return; /* no data to transfer */ /* * update resid. First account for the table entries which have * been fully completed. */ for (i = 0; i < offset; i++) siop_cmd->xs->resid -= siop_ctoh32(sc, siop_cmd->siop_tables->data[i].count); /* * if CMDFL_RESID is set, the last table (pointed by offset) is a * partial transfers. If not, offset points to the entry following * the last full transfer. */ if (siop_cmd->flags & CMDFL_RESID) { table = &siop_cmd->siop_tables->data[offset]; siop_cmd->xs->resid -= siop_ctoh32(sc, table->count) - siop_cmd->resid; } } int siop_iwr(struct siop_common_cmd *siop_cmd) { int offset; scr_table_t *table; /* table with IWR */ struct siop_common_softc *sc = siop_cmd->siop_sc; /* handle ignore wide residue messages */ /* if target isn't wide, reject */ if ((siop_cmd->siop_target->flags & TARF_ISWIDE) == 0) { siop_cmd->siop_tables->t_msgout.count = siop_htoc32(sc, 1); siop_cmd->siop_tables->msg_out[0] = MSG_MESSAGE_REJECT; return SIOP_NEG_MSGOUT; } /* get index of current command in table */ offset = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCRATCHA + 1); /* * if the current table did complete, we're now pointing at the * next one. Go back one if we didn't see a phase mismatch. */ if ((siop_cmd->flags & CMDFL_RESID) == 0) offset--; table = &siop_cmd->siop_tables->data[offset]; if ((siop_cmd->flags & CMDFL_RESID) == 0) { if (siop_ctoh32(sc, table->count) & 1) { /* we really got the number of bytes we expected */ return SIOP_NEG_ACK; } else { /* * now we really had a short xfer, by one byte. * handle it just as if we had a phase mismatch * (there is a resid of one for this table). * Update scratcha1 to reflect the fact that * this xfer isn't complete. */ siop_cmd->flags |= CMDFL_RESID; siop_cmd->resid = 1; bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCRATCHA + 1, offset); return SIOP_NEG_ACK; } } else { /* * we already have a short xfer for this table; it's * just one byte less than we though it was */ siop_cmd->resid--; return SIOP_NEG_ACK; } } void siop_clearfifo(struct siop_common_softc *sc) { int timeout = 0; int ctest3 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3); #ifdef DEBUG_INTR printf("DMA fifo not empty !\n"); #endif bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3, ctest3 | CTEST3_CLF); while ((bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3) & CTEST3_CLF) != 0) { delay(1); if (++timeout > 1000) { printf("clear fifo failed\n"); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3, bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_CTEST3) & ~CTEST3_CLF); return; } } } int siop_modechange(struct siop_common_softc *sc) { int retry; int sist0, sist1, stest2; for (retry = 0; retry < 5; retry++) { /* * datasheet says to wait 100ms and re-read SIST1, * to check that DIFFSENSE is stable. * We may delay() 5 times for 100ms at interrupt time; * hopefully this will not happen often. */ delay(100000); sist0 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SIST0); sist1 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SIST1); if (sist1 & SIEN1_SBMC) continue; /* we got an irq again */ sc->mode = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST4) & STEST4_MODE_MASK; stest2 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2); switch(sc->mode) { case STEST4_MODE_DIF: printf("%s: switching to differential mode\n", sc->sc_dev.dv_xname); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2, stest2 | STEST2_DIF); break; case STEST4_MODE_SE: printf("%s: switching to single-ended mode\n", sc->sc_dev.dv_xname); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2, stest2 & ~STEST2_DIF); break; case STEST4_MODE_LVD: printf("%s: switching to LVD mode\n", sc->sc_dev.dv_xname); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_STEST2, stest2 & ~STEST2_DIF); break; default: printf("%s: invalid SCSI mode 0x%x\n", sc->sc_dev.dv_xname, sc->mode); return 0; } return 1; } printf("%s: timeout waiting for DIFFSENSE to stabilise\n", sc->sc_dev.dv_xname); return 0; } void siop_resetbus(struct siop_common_softc *sc) { int scntl1; scntl1 = bus_space_read_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1, scntl1 | SCNTL1_RST); /* minimum 25 us, more time won't hurt */ delay(100); bus_space_write_1(sc->sc_rt, sc->sc_rh, SIOP_SCNTL1, scntl1); } void siop_update_xfer_mode(struct siop_common_softc *sc, int target) { struct siop_common_target *siop_target; siop_target = sc->targets[target]; printf("%s: target %d now using %s%s%d bit ", sc->sc_dev.dv_xname, target, (siop_target->flags & TARF_TAG) ? "tagged " : "", (siop_target->flags & TARF_ISDT) ? "DT " : "", (siop_target->flags & TARF_ISWIDE) ? 16 : 8); if (siop_target->offset == 0) printf("async "); else { switch (siop_target->period) { case 9: /* 12.5ns cycle */ printf("80.0"); break; case 10: /* 25 ns cycle */ printf("40.0"); break; case 12: /* 48 ns cycle */ printf("20.0"); break; case 18: /* 72 ns cycle */ printf("13.3"); break; case 25: /* 100 ns cycle */ printf("10.0"); break; case 37: /* 118 ns cycle */ printf("6.67"); break; case 50: /* 200 ns cycle */ printf("5.0"); break; case 75: /* 300 ns cycle */ printf("3.33"); break; default: printf("??"); break; } printf(" MHz %d REQ/ACK offset ", siop_target->offset); } printf("xfers\n"); if ((sc->features & SF_CHIP_GEBUG) && (siop_target->flags & TARF_ISWIDE) == 0) /* 1010 workaround: can't do disconnect if not wide, so can't do tag */ siop_target->flags &= ~TARF_TAG; }