- Additional rearrangement for the sake of running on the DECstation some
day. - Convert to use bus_dma. - Fix cleaning up unaligned start address. - Correctly determine if the device supports Fast SCSI, and adjust the minimum sync period accordingly. - Compute minimum sync period correctly on the 25MHz devices. - Use GPI2 to determine if we're a 25MHz or 40MHz device. - Currectly determine SCSI ID and "fast mode enabled" for the built-in TCDS on DEC 3000 models, using cached information from the PROM environment.
This commit is contained in:
thorpej
parent
ab087002d1
commit
1ef3ca572e
@ -1,4 +1,4 @@
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/* $NetBSD: tcds.c,v 1.24 1998/05/25 01:14:38 thorpej Exp $ */
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/* $NetBSD: tcds.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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@ -66,17 +66,19 @@
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: tcds.c,v 1.24 1998/05/25 01:14:38 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: tcds.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#ifdef __alpha__
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#include <machine/rpb.h>
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#ifndef EVCNT_COUNTERS
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#include <machine/intrcnt.h>
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#endif
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#endif /* __alpha__ */
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#include <machine/bus.h>
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@ -99,6 +101,8 @@ struct tcds_softc {
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bus_space_tag_t sc_bst;
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bus_space_handle_t sc_bsh;
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bus_dma_tag_t sc_dmat;
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void *sc_cookie;
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int sc_flags;
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@ -108,7 +112,7 @@ struct tcds_softc {
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/* sc_flags */
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#define TCDSF_BASEBOARD 0x01 /* baseboard on DEC 3000 */
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#define TCDSF_FASTSCSI 0x02 /* fast SCSI device */
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#define TCDSF_FASTSCSI 0x02 /* supports Fast SCSI */
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/* Definition of the driver for autoconfig. */
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int tcdsmatch __P((struct device *, struct cfdata *, void *));
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@ -127,8 +131,10 @@ struct tcds_device {
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const char *td_name;
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int td_flags;
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} tcds_devices[] = {
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#ifdef __alpha__
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{ "PMAZ-DS ", TCDSF_BASEBOARD },
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{ "PMAZ-FS ", TCDSF_BASEBOARD|TCDSF_FASTSCSI },
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#endif /* __alpha__ */
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{ "PMAZB-AA", 0 },
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{ "PMAZC-AA", TCDSF_FASTSCSI },
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{ NULL, 0 },
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@ -172,7 +178,7 @@ tcdsattach(parent, self, aux)
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struct tcds_slotconfig *slotc;
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struct tcds_device *td;
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bus_space_handle_t sbsh[2];
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int i, id, fast;
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int i, error, gpi2;
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extern int cputype;
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td = tcds_lookup(ta->ta_modname);
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@ -181,22 +187,17 @@ tcdsattach(parent, self, aux)
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printf(": TurboChannel Dual SCSI");
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if (td->td_flags & TCDSF_BASEBOARD)
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printf(", baseboard");
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if (td->td_flags & TCDSF_FASTSCSI)
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printf(", fast");
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printf(" (baseboard)");
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printf("\n");
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sc->sc_flags = td->td_flags;
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#ifndef __alpha__
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if (sc->sc_flags & TCDSF_BASEBOARD)
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panic("tcdsattach: baseboard TCDS on non-Alpha?!");
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#endif
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sc->sc_bst = ta->ta_memt;
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sc->sc_dmat = ta->ta_dmat;
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/*
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* Map the device.
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*/
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sc->sc_bst = ta->ta_memt;
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if (bus_space_map(sc->sc_bst, ta->ta_addr,
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(TCDS_SCSI1_OFFSET + 0x100), 0, &sc->sc_bsh)) {
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printf("%s: unable to map device\n", sc->sc_dv.dv_xname);
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@ -228,6 +229,12 @@ tcdsattach(parent, self, aux)
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/* XXX Initial contents of CIR? */
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/*
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* Remember if GPI2 is set in the CIR; we'll need it later.
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*/
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gpi2 = (bus_space_read_4(sc->sc_bst, sc->sc_bsh, TCDS_CIR) &
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TCDS_CIR_GPI_2) != 0;
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/*
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* Set up the per-slot defintions for later use.
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*/
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@ -244,6 +251,12 @@ tcdsattach(parent, self, aux)
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slotc->sc_asc = NULL;
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slotc->sc_intrhand = tcds_intrnull;
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slotc->sc_intrarg = (void *)(long)i;
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slotc->sc_dmat = sc->sc_dmat;
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if ((error = tcds_dma_init(slotc)) != 0) {
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printf("%s: tcds_dma_init failed, error = %d\n",
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sc->sc_dv.dv_xname, error);
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return;
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}
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}
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/* information for slot 0 */
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@ -274,18 +287,28 @@ tcdsattach(parent, self, aux)
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/* find the hardware attached to the TCDS ASIC */
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for (i = 0; i < 2; i++) {
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tcds_params(sc, i, &id, &fast);
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tcds_params(sc, i, &tcdsdev.tcdsda_id,
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&tcdsdev.tcdsda_fast);
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tcdsdev.tcdsda_bst = sc->sc_bst;
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tcdsdev.tcdsda_bsh = sbsh[i];
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tcdsdev.tcdsda_chip = i;
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tcdsdev.tcdsda_sc = &sc->sc_slots[i];
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tcdsdev.tcdsda_id = id; /* XXX */
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tcdsdev.tcdsda_freq = 25000000; /* XXX */
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if (sc->sc_flags & TCDSF_FASTSCSI)
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tcdsdev.tcdsda_variant = NCR_VARIANT_NCR53C96;
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else
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/*
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* Determine the chip frequency. If GPI2 is set, we have a
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* 25MHz clock, else a 40MHz clock.
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*/
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if (gpi2) {
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tcdsdev.tcdsda_freq = 25000000;
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tcdsdev.tcdsda_period = 5;
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} else {
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tcdsdev.tcdsda_freq = 40000000;
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tcdsdev.tcdsda_period = tcdsdev.tcdsda_fast ? 4 : 8;
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}
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if (sc->sc_flags & TCDSF_BASEBOARD)
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tcdsdev.tcdsda_variant = NCR_VARIANT_NCR53C94;
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else
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tcdsdev.tcdsda_variant = NCR_VARIANT_NCR53C96;
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tcds_scsi_reset(tcdsdev.tcdsda_sc);
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@ -546,13 +569,15 @@ tcds_params(sc, chip, idp, fastp)
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struct tcds_softc *sc;
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int chip, *idp, *fastp;
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{
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int id, fast;
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u_int32_t ids;
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#ifdef __alpha__
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if (sc->sc_flags && TCDSF_BASEBOARD) {
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/* XXX Implement me. */
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*idp = 7;
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*fastp = 0;
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extern u_int8_t dec_3000_scsiid[], dec_3000_scsifast[];
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id = dec_3000_scsiid[chip];
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fast = dec_3000_scsifast[chip];
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} else
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#endif /* __alpha__ */
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{
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@ -565,11 +590,23 @@ tcds_params(sc, chip, idp, fastp)
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if (chip == 0)
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ids >>= 4;
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*idp = ids & 0x7;
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*fastp = ids & 0x8;
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id = ids & 0x7;
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fast = ids & 0x8;
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}
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if ((sc->sc_flags & TCDSF_FASTSCSI) != 0 && *fastp == 0)
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printf("%s: WARNING: chip %d not in fast mode\n",
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if (id < 0 || id > 7) {
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printf("%s: WARNING: bad SCSI ID %d for chip %d, using 7\n",
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sc->sc_dv.dv_xname, id, chip);
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id = 7;
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}
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if ((sc->sc_flags & TCDSF_FASTSCSI) == 0)
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fast = 0;
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if (fast)
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printf("%s: fast mode set for chip %d\n",
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sc->sc_dv.dv_xname, chip);
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*idp = id;
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*fastp = fast;
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}
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@ -1,4 +1,41 @@
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/* $NetBSD: tcds_dma.c,v 1.24 1998/05/24 23:41:43 thorpej Exp $ */
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/* $NetBSD: tcds_dma.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1994 Peter Galbavy. All rights reserved.
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@ -31,7 +68,7 @@
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: tcds_dma.c,v 1.24 1998/05/24 23:41:43 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: tcds_dma.c,v 1.25 1998/05/26 23:43:05 thorpej Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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@ -95,10 +132,12 @@ tcds_dma_intr(sc)
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struct tcds_slotconfig *sc;
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{
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struct ncr53c9x_softc *nsc = &sc->sc_asc->sc_ncr53c9x;
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bus_dmamap_t map = sc->sc_dmamap;
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u_int32_t dud;
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int trans = 0, resid = 0;
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u_int32_t *addr, dudmask;
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u_int8_t tcl, tcm, tch;
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bus_addr_t pa;
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NCR_DMA(("tcds_dma %d: intr", sc->sc_slot));
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@ -149,6 +188,9 @@ tcds_dma_intr(sc)
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NCR_DMA(("tcds_dma_intr: tcl=%d, tcm=%d, tch=%d; trans=%d, resid=%d\n",
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tcl, tcm, tch, trans, resid));
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bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
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(sc->sc_iswrite ? BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE));
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/*
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* Clean up unaligned DMAs into main memory.
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*/
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@ -157,7 +199,7 @@ tcds_dma_intr(sc)
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dud = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dud0);
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if ((dud & TCDS_DUD0_VALIDBITS) != 0) {
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addr = (u_int32_t *)
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((vm_offset_t)sc->sc_dmaaddr & ~0x3);
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((vm_offset_t)*sc->sc_dmaaddr & ~0x3);
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dudmask = 0;
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if (dud & TCDS_DUD0_VALID00)
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panic("tcds_dma: dud0 byte 0 valid");
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@ -171,15 +213,12 @@ tcds_dma_intr(sc)
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#endif
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NCR_DMA(("dud0 at 0x%p dudmask 0x%x\n",
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addr, dudmask));
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addr = (u_int32_t *)ALPHA_PHYS_TO_K0SEG((vm_offset_t)addr);
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*addr = (*addr & ~dudmask) | (dud & dudmask);
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}
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dud = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dud1);
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if ((dud & TCDS_DUD1_VALIDBITS) != 0) {
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addr = (u_int32_t *)
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((vm_offset_t)bus_space_read_4(sc->sc_bst,
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sc->sc_bsh, sc->sc_sda) << 2);
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pa = bus_space_read_4(sc->sc_bst, sc->sc_bsh,
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sc->sc_sda) << 2;
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dudmask = 0;
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if (dud & TCDS_DUD1_VALID00)
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dudmask |= TCDS_DUD_BYTE00;
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@ -192,13 +231,22 @@ tcds_dma_intr(sc)
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panic("tcds_dma: dud1 byte 3 valid");
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#endif
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NCR_DMA(("dud1 at 0x%p dudmask 0x%x\n",
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addr, dudmask));
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addr = (u_int32_t *)ALPHA_PHYS_TO_K0SEG((vm_offset_t)addr);
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pa, dudmask));
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/* XXX Fix TC_PHYS_TO_UNCACHED() */
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#if defined(__alpha__)
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addr = (u_int32_t *)ALPHA_PHYS_TO_K0SEG(pa);
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#elif defined(__mips__)
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addr = (u_int32_t *)MIPS_PHYS_TO_KSEG1(pa);
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#else
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#error TurboChannel only exists on DECs, folks...
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#endif
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*addr = (*addr & ~dudmask) | (dud & dudmask);
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}
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/* XXX deal with saved residual byte? */
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}
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bus_dmamap_unload(sc->sc_dmat, map);
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*sc->sc_dmalen -= trans;
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*sc->sc_dmaaddr += trans;
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@ -226,6 +274,7 @@ tcds_dma_setup(sc, addr, len, datain, dmasize)
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size_t *len, *dmasize;
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int datain; /* DMA into main memory */
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{
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bus_dmamap_t map = sc->sc_dmamap;
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u_int32_t dic;
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size_t size;
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@ -245,12 +294,24 @@ tcds_dma_setup(sc, addr, len, datain, dmasize)
|
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NCR_DMA(("dma_start: dmasize = %ld\n", sc->sc_dmasize));
|
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|
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if (bus_dmamap_load(sc->sc_dmat, map, *addr, size,
|
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NULL, BUS_DMA_NOWAIT)) {
|
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/*
|
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* XXX Should return an error, here, but the upper-layer
|
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* XXX doesn't check the return value!
|
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*/
|
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panic("tcds_dma_setup: dmamap load failed");
|
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}
|
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|
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bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize,
|
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(sc->sc_iswrite ? BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE));
|
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|
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/* Load address, set/clear unaligned transfer and read/write bits. */
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bus_space_write_4(sc->sc_bst, sc->sc_bsh, sc->sc_sda,
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vtophys((vm_offset_t)*addr) >> 2);
|
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map->dm_segs[0].ds_addr >> 2);
|
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dic = bus_space_read_4(sc->sc_bst, sc->sc_bsh, sc->sc_dic);
|
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dic &= ~TCDS_DIC_ADDRMASK;
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dic |= (vm_offset_t)*addr & TCDS_DIC_ADDRMASK;
|
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dic |= map->dm_segs[0].ds_addr & TCDS_DIC_ADDRMASK;
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if (datain)
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dic |= TCDS_DIC_WRITE;
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else
|
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@ -279,3 +340,18 @@ tcds_dma_isactive(sc)
|
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|
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return (sc->sc_active);
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}
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int
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tcds_dma_init(sc)
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struct tcds_slotconfig *sc;
|
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{
|
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|
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/*
|
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* The TCDS ASIC cannot DMA across 8k boundaries, and this
|
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* driver is written such that each DMA segment gets a new
|
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* call to tcds_dma_setup(). Thus, the DMA map only needs
|
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* to support 8k transfers.
|
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*/
|
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return (bus_dmamap_create(sc->sc_dmat, 0x2000, 1, 0x2000,
|
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0x2000, BUS_DMA_NOWAIT, &sc->sc_dmamap));
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}
|
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|
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@ -1,4 +1,4 @@
|
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/* $NetBSD: tcdsvar.h,v 1.9 1998/05/24 23:41:43 thorpej Exp $ */
|
||||
/* $NetBSD: tcdsvar.h,v 1.10 1998/05/26 23:43:05 thorpej Exp $ */
|
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|
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/*
|
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
|
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@ -36,7 +36,7 @@ struct tcds_slotconfig {
|
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bus_space_tag_t sc_bst; /* to frob TCDS regs */
|
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bus_space_handle_t sc_bsh;
|
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|
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struct asc_softc *sc_asc; /* to frob child's regs */
|
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struct asc_tcds_softc *sc_asc; /* to frob child's regs */
|
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|
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int (*sc_intrhand) __P((void *)); /* intr. handler */
|
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void *sc_intrarg; /* intr. handler arg. */
|
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@ -62,6 +62,8 @@ struct tcds_slotconfig {
|
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/*
|
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* DMA bookkeeping information.
|
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*/
|
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bus_dma_tag_t sc_dmat;
|
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bus_dmamap_t sc_dmamap;
|
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int sc_active; /* DMA active ? */
|
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int sc_iswrite; /* DMA into main memory? */
|
||||
size_t sc_dmasize;
|
||||
@ -76,7 +78,9 @@ struct tcdsdev_attach_args {
|
||||
int tcdsda_chip; /* chip number */
|
||||
int tcdsda_id; /* SCSI ID */
|
||||
u_int tcdsda_freq; /* chip frequency */
|
||||
int tcdsda_period; /* min. sync period */
|
||||
int tcdsda_variant; /* NCR chip variant */
|
||||
int tcdsda_fast; /* chip does Fast mode */
|
||||
};
|
||||
|
||||
/*
|
||||
@ -101,3 +105,8 @@ int tcds_dma_setup __P((struct tcds_slotconfig *, caddr_t *, size_t *,
|
||||
int, size_t *));
|
||||
void tcds_dma_go __P((struct tcds_slotconfig *));
|
||||
int tcds_dma_isactive __P((struct tcds_slotconfig *));
|
||||
|
||||
/*
|
||||
* TCDS DMA functions (private to TCDS)
|
||||
*/
|
||||
int tcds_dma_init __P((struct tcds_slotconfig *));
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user