- Make this into a proper attachment (i.e. use asc_tcds) and clean up
the namespace accordingly. - Set FCLK in the CFG3 register if we have a > 25MHz clock. - Indicate that we support Fast mode to the back-end if we're told we're fast by the TCDS layer. - Correctly compute the minimum sync period.
This commit is contained in:
thorpej
parent
3ce836df8d
commit
3aa84f9e26
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@ -1,4 +1,4 @@
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/* $NetBSD: asc.c,v 1.9 1998/05/24 23:41:42 thorpej Exp $ */
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/* $NetBSD: asc.c,v 1.10 1998/05/26 23:37:27 thorpej Exp $ */
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/*-
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* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
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@ -108,7 +108,7 @@
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.9 1998/05/24 23:41:42 thorpej Exp $");
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__KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.10 1998/05/26 23:37:27 thorpej Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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@ -137,22 +137,22 @@ __KERNEL_RCSID(0, "$NetBSD: asc.c,v 1.9 1998/05/24 23:41:42 thorpej Exp $");
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#include <alpha/tc/tcdsvar.h>
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#include <alpha/tc/ascvar.h>
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void ascattach __P((struct device *, struct device *, void *));
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int ascmatch __P((struct device *, struct cfdata *, void *));
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int asc_tcds_match __P((struct device *, struct cfdata *, void *));
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void asc_tcds_attach __P((struct device *, struct device *, void *));
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/* Linkup to the rest of the kernel */
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struct cfattach asc_ca = {
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sizeof(struct asc_softc), ascmatch, ascattach
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struct cfattach asc_tcds_ca = {
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sizeof(struct asc_tcds_softc), asc_tcds_match, asc_tcds_attach
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};
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struct scsipi_adapter asc_switch = {
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struct scsipi_adapter asc_tcds_switch = {
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ncr53c9x_scsi_cmd,
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minphys, /* no max at this level; handled by DMA code */
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NULL,
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NULL,
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};
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struct scsipi_device asc_dev = {
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struct scsipi_device asc_tcds_dev = {
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NULL, /* Use default error handler */
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NULL, /* have a queue, served by this */
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NULL, /* have no async handler */
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@ -162,33 +162,33 @@ struct scsipi_device asc_dev = {
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/*
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* Functions and the switch for the MI code.
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*/
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u_char asc_read_reg __P((struct ncr53c9x_softc *, int));
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void asc_write_reg __P((struct ncr53c9x_softc *, int, u_char));
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int asc_dma_isintr __P((struct ncr53c9x_softc *));
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void asc_dma_reset __P((struct ncr53c9x_softc *));
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int asc_dma_intr __P((struct ncr53c9x_softc *));
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int asc_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
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u_char asc_tcds_read_reg __P((struct ncr53c9x_softc *, int));
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void asc_tcds_write_reg __P((struct ncr53c9x_softc *, int, u_char));
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int asc_tcds_dma_isintr __P((struct ncr53c9x_softc *));
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void asc_tcds_dma_reset __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_intr __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_setup __P((struct ncr53c9x_softc *, caddr_t *,
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size_t *, int, size_t *));
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void asc_dma_go __P((struct ncr53c9x_softc *));
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void asc_dma_stop __P((struct ncr53c9x_softc *));
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int asc_dma_isactive __P((struct ncr53c9x_softc *));
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void asc_clear_latched_intr __P((struct ncr53c9x_softc *));
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void asc_tcds_dma_go __P((struct ncr53c9x_softc *));
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void asc_tcds_dma_stop __P((struct ncr53c9x_softc *));
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int asc_tcds_dma_isactive __P((struct ncr53c9x_softc *));
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void asc_tcds_clear_latched_intr __P((struct ncr53c9x_softc *));
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struct ncr53c9x_glue asc_glue = {
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asc_read_reg,
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asc_write_reg,
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asc_dma_isintr,
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asc_dma_reset,
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asc_dma_intr,
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asc_dma_setup,
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asc_dma_go,
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asc_dma_stop,
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asc_dma_isactive,
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asc_clear_latched_intr,
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struct ncr53c9x_glue asc_tcds_glue = {
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asc_tcds_read_reg,
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asc_tcds_write_reg,
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asc_tcds_dma_isintr,
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asc_tcds_dma_reset,
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asc_tcds_dma_intr,
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asc_tcds_dma_setup,
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asc_tcds_dma_go,
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asc_tcds_dma_stop,
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asc_tcds_dma_isactive,
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asc_tcds_clear_latched_intr,
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};
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int
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ascmatch(parent, cf, aux)
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asc_tcds_match(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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@ -202,18 +202,18 @@ ascmatch(parent, cf, aux)
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* Attach this instance, and then all the sub-devices
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*/
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void
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ascattach(parent, self, aux)
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asc_tcds_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct tcdsdev_attach_args *tcdsdev = aux;
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struct asc_softc *asc = (void *)self;
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struct asc_tcds_softc *asc = (void *)self;
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struct ncr53c9x_softc *sc = &asc->sc_ncr53c9x;
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/*
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* Set up glue for MI code early; we use some of it here.
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*/
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sc->sc_glue = &asc_glue;
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sc->sc_glue = &asc_tcds_glue;
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asc->sc_bst = tcdsdev->tcdsda_bst;
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asc->sc_bsh = tcdsdev->tcdsda_bsh;
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@ -241,8 +241,12 @@ ascattach(parent, self, aux)
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*/
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sc->sc_cfg1 = sc->sc_id | NCRCFG1_PARENB;
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sc->sc_cfg2 = NCRCFG2_SCSI2;
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sc->sc_cfg3 = 0x4; /* Save residual byte. XXX??? */
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sc->sc_cfg3 = NCRCFG3_CDB;
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if (sc->sc_freq > 25)
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sc->sc_cfg3 |= NCRCFG3_FCLK;
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sc->sc_rev = tcdsdev->tcdsda_variant;
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if (tcdsdev->tcdsda_fast)
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sc->sc_features |= NCR_F_FASTSCSI;
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/*
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* XXX minsync and maxxfer _should_ be set up in MI code,
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@ -259,12 +263,12 @@ ascattach(parent, self, aux)
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* Since the chip's clock is given in MHz, we have the following
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* formula: 4 * period = (1000 / freq) * 4
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*/
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sc->sc_minsync = 1000 / sc->sc_freq;
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sc->sc_minsync = (1000 / sc->sc_freq) * tcdsdev->tcdsda_period / 4;
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sc->sc_maxxfer = 64 * 1024;
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/* Do the common parts of attachment. */
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ncr53c9x_attach(sc, &asc_switch, &asc_dev);
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ncr53c9x_attach(sc, &asc_tcds_switch, &asc_tcds_dev);
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}
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/*
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@ -272,11 +276,11 @@ ascattach(parent, self, aux)
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*/
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u_char
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asc_read_reg(sc, reg)
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asc_tcds_read_reg(sc, reg)
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struct ncr53c9x_softc *sc;
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int reg;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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u_char v;
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v = bus_space_read_4(asc->sc_bst, asc->sc_bsh,
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@ -286,72 +290,72 @@ asc_read_reg(sc, reg)
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}
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void
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asc_write_reg(sc, reg, val)
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asc_tcds_write_reg(sc, reg, val)
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struct ncr53c9x_softc *sc;
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int reg;
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u_char val;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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bus_space_write_4(asc->sc_bst, asc->sc_bsh,
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reg * sizeof(u_int32_t), val);
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}
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int
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asc_dma_isintr(sc)
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asc_tcds_dma_isintr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_isintr(asc->sc_dma));
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}
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void
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asc_dma_reset(sc)
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asc_tcds_dma_reset(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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tcds_dma_reset(asc->sc_dma);
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}
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int
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asc_dma_intr(sc)
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asc_tcds_dma_intr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_intr(asc->sc_dma));
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}
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int
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asc_dma_setup(sc, addr, len, datain, dmasize)
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asc_tcds_dma_setup(sc, addr, len, datain, dmasize)
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struct ncr53c9x_softc *sc;
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caddr_t *addr;
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size_t *len;
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int datain;
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size_t *dmasize;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_setup(asc->sc_dma, addr, len, datain, dmasize));
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}
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void
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asc_dma_go(sc)
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asc_tcds_dma_go(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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tcds_dma_go(asc->sc_dma);
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}
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void
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asc_dma_stop(sc)
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asc_tcds_dma_stop(sc)
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struct ncr53c9x_softc *sc;
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{
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#if 0
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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#endif
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/*
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@ -360,19 +364,19 @@ asc_dma_stop(sc)
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}
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int
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asc_dma_isactive(sc)
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asc_tcds_dma_isactive(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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return (tcds_dma_isactive(asc->sc_dma));
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}
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void
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asc_clear_latched_intr(sc)
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asc_tcds_clear_latched_intr(sc)
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struct ncr53c9x_softc *sc;
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{
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struct asc_softc *asc = (struct asc_softc *)sc;
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struct asc_tcds_softc *asc = (struct asc_tcds_softc *)sc;
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/* Clear the TCDS interrupt bit. */
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(void)tcds_scsi_isintr(asc->sc_dma, 1);
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