275 lines
8.7 KiB
C
275 lines
8.7 KiB
C
/* $NetBSD: dma_sbus.c,v 1.16 2002/10/02 16:52:35 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 Paul Kranenburg.
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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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*
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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 Peter Galbavy.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.16 2002/10/02 16:52:35 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <machine/autoconf.h>
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#include <dev/sbus/sbusvar.h>
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#include <dev/ic/lsi64854reg.h>
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#include <dev/ic/lsi64854var.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/ic/ncr53c9xreg.h>
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#include <dev/ic/ncr53c9xvar.h>
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struct dma_softc {
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struct lsi64854_softc sc_lsi64854; /* base device */
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struct sbusdev sc_sd; /* sbus device */
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};
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int dmamatch_sbus __P((struct device *, struct cfdata *, void *));
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void dmaattach_sbus __P((struct device *, struct device *, void *));
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int dmaprint_sbus __P((void *, const char *));
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void *dmabus_intr_establish __P((
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bus_space_tag_t,
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int, /*bus interrupt priority*/
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int, /*`device class' level*/
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int, /*flags*/
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int (*) __P((void *)), /*handler*/
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void *)); /*handler arg*/
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static bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc));
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CFATTACH_DECL(dma_sbus, sizeof(struct dma_softc),
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dmamatch_sbus, dmaattach_sbus, NULL, NULL);
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CFATTACH_DECL(ledma, sizeof(struct dma_softc),
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dmamatch_sbus, dmaattach_sbus, NULL, NULL);
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int
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dmaprint_sbus(aux, busname)
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void *aux;
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const char *busname;
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{
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struct sbus_attach_args *sa = aux;
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bus_space_tag_t t = sa->sa_bustag;
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struct dma_softc *sc = t->cookie;
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sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */
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sbus_print(aux, busname); /* XXX */
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sa->sa_bustag = t; /* XXX */
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return (UNCONF);
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}
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int
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dmamatch_sbus(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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{
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struct sbus_attach_args *sa = aux;
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return (strcmp(cf->cf_name, sa->sa_name) == 0 ||
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strcmp("espdma", sa->sa_name) == 0);
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}
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void
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dmaattach_sbus(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 sbus_attach_args *sa = aux;
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struct dma_softc *dsc = (void *)self;
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struct lsi64854_softc *sc = &dsc->sc_lsi64854;
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bus_space_tag_t sbt;
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int sbusburst, burst;
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int node;
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node = sa->sa_node;
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sc->sc_bustag = sa->sa_bustag;
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sc->sc_dmatag = sa->sa_dmatag;
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/* Map registers */
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if (sa->sa_npromvaddrs) {
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sbus_promaddr_to_handle(sa->sa_bustag,
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sa->sa_promvaddrs[0], &sc->sc_regs);
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} else {
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if (sbus_bus_map(sa->sa_bustag,
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sa->sa_slot, sa->sa_offset, sa->sa_size,
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0, &sc->sc_regs) != 0) {
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printf("%s: cannot map registers\n", self->dv_xname);
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return;
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}
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}
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/*
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* Get transfer burst size from PROM and plug it into the
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* controller registers. This is needed on the Sun4m; do
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* others need it too?
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*/
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sbusburst = ((struct sbus_softc *)parent)->sc_burst;
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if (sbusburst == 0)
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sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
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burst = PROM_getpropint(node,"burst-sizes", -1);
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if (burst == -1)
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/* take SBus burst sizes */
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burst = sbusburst;
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/* Clamp at parent's burst sizes */
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burst &= sbusburst;
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sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
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(burst & SBUS_BURST_16) ? 16 : 0;
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if (strcmp(sc->sc_dev.dv_cfdata->cf_name, "ledma") == 0) {
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char *cabletype;
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u_int32_t csr;
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/*
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* Check to see which cable type is currently active and
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* set the appropriate bit in the ledma csr so that it
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* gets used. If we didn't netboot, the PROM won't have
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* the "cable-selection" property; default to TP and then
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* the user can change it via a "media" option to ifconfig.
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*/
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cabletype = PROM_getpropstring(node, "cable-selection");
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csr = L64854_GCSR(sc);
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if (strcmp(cabletype, "tpe") == 0) {
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csr |= E_TP_AUI;
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} else if (strcmp(cabletype, "aui") == 0) {
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csr &= ~E_TP_AUI;
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} else {
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/* assume TP if nothing there */
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csr |= E_TP_AUI;
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}
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L64854_SCSR(sc, csr);
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delay(20000); /* manual says we need a 20ms delay */
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sc->sc_channel = L64854_CHANNEL_ENET;
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} else {
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sc->sc_channel = L64854_CHANNEL_SCSI;
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}
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sbus_establish(&dsc->sc_sd, &sc->sc_dev);
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sbt = dma_alloc_bustag(dsc);
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lsi64854_attach(sc);
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/* Attach children */
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for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
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struct sbus_attach_args sa;
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sbus_setup_attach_args((struct sbus_softc *)parent,
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sbt, sc->sc_dmatag, node, &sa);
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(void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus);
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sbus_destroy_attach_args(&sa);
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}
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}
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void *
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dmabus_intr_establish(t, pri, level, flags, handler, arg)
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bus_space_tag_t t;
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int pri;
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int level;
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int flags;
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int (*handler) __P((void *));
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void *arg;
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{
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struct lsi64854_softc *sc = t->cookie;
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/* XXX - for now only le; do esp later */
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if (sc->sc_channel == L64854_CHANNEL_ENET) {
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sc->sc_intrchain = handler;
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sc->sc_intrchainarg = arg;
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handler = lsi64854_enet_intr;
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arg = sc;
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}
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return (bus_intr_establish(sc->sc_bustag, pri, level, flags,
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handler, arg));
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}
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bus_space_tag_t
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dma_alloc_bustag(sc)
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struct dma_softc *sc;
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{
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bus_space_tag_t sbt;
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sbt = (bus_space_tag_t) malloc(sizeof(struct sparc_bus_space_tag),
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M_DEVBUF, M_NOWAIT|M_ZERO);
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if (sbt == NULL)
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return (NULL);
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sbt->cookie = sc;
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sbt->parent = sc->sc_lsi64854.sc_bustag;
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sbt->sparc_intr_establish = dmabus_intr_establish;
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return (sbt);
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}
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