NetBSD/sys/dev/sbus/dma_sbus.c

278 lines
8.6 KiB
C

/* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 pk Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Paul Kranenburg.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1994 Peter Galbavy. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Peter Galbavy.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <machine/autoconf.h>
#include <dev/sbus/sbusvar.h>
#include <dev/ic/lsi64854reg.h>
#include <dev/ic/lsi64854var.h>
#include <dev/scsipi/scsi_all.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/scsiconf.h>
#include <dev/ic/ncr53c9xreg.h>
#include <dev/ic/ncr53c9xvar.h>
struct dma_softc {
struct lsi64854_softc sc_lsi64854; /* base device */
struct sbusdev sc_sd; /* sbus device */
};
int dmamatch_sbus __P((struct device *, struct cfdata *, void *));
void dmaattach_sbus __P((struct device *, struct device *, void *));
int dmaprint_sbus __P((void *, const char *));
void *dmabus_intr_establish __P((
bus_space_tag_t,
int, /*bus interrupt priority*/
int, /*`device class' level*/
int, /*flags*/
int (*) __P((void *)), /*handler*/
void *)); /*handler arg*/
static bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc));
struct cfattach dma_sbus_ca = {
sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
};
struct cfattach ledma_ca = {
sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
};
int
dmaprint_sbus(aux, busname)
void *aux;
const char *busname;
{
struct sbus_attach_args *sa = aux;
bus_space_tag_t t = sa->sa_bustag;
struct dma_softc *sc = t->cookie;
sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */
sbus_print(aux, busname); /* XXX */
sa->sa_bustag = t; /* XXX */
return (UNCONF);
}
int
dmamatch_sbus(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct sbus_attach_args *sa = aux;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 ||
strcmp("espdma", sa->sa_name) == 0);
}
void
dmaattach_sbus(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbus_attach_args *sa = aux;
struct dma_softc *dsc = (void *)self;
struct lsi64854_softc *sc = &dsc->sc_lsi64854;
bus_space_handle_t bh;
bus_space_tag_t sbt;
int sbusburst, burst;
int node;
node = sa->sa_node;
sc->sc_bustag = sa->sa_bustag;
sc->sc_dmatag = sa->sa_dmatag;
/* Map registers */
if (sa->sa_npromvaddrs != 0)
sc->sc_regs = (bus_space_handle_t)sa->sa_promvaddrs[0];
else {
if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
sa->sa_offset,
sa->sa_size,
0, 0, &bh) != 0) {
printf("%s: cannot map registers\n", self->dv_xname);
return;
}
sc->sc_regs = bh;
}
/*
* Get transfer burst size from PROM and plug it into the
* controller registers. This is needed on the Sun4m; do
* others need it too?
*/
sbusburst = ((struct sbus_softc *)parent)->sc_burst;
if (sbusburst == 0)
sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
burst = getpropint(node,"burst-sizes", -1);
if (burst == -1)
/* take SBus burst sizes */
burst = sbusburst;
/* Clamp at parent's burst sizes */
burst &= sbusburst;
sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
(burst & SBUS_BURST_16) ? 16 : 0;
if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) {
char *cabletype;
u_int32_t csr;
/*
* Check to see which cable type is currently active and
* set the appropriate bit in the ledma csr so that it
* gets used. If we didn't netboot, the PROM won't have
* the "cable-selection" property; default to TP and then
* the user can change it via a "media" option to ifconfig.
*/
cabletype = getpropstring(node, "cable-selection");
csr = L64854_GCSR(sc);
if (strcmp(cabletype, "tpe") == 0) {
csr |= E_TP_AUI;
} else if (strcmp(cabletype, "aui") == 0) {
csr &= ~E_TP_AUI;
} else {
/* assume TP if nothing there */
csr |= E_TP_AUI;
}
L64854_SCSR(sc, csr);
delay(20000); /* manual says we need a 20ms delay */
sc->sc_channel = L64854_CHANNEL_ENET;
} else {
sc->sc_channel = L64854_CHANNEL_SCSI;
}
sbus_establish(&dsc->sc_sd, &sc->sc_dev);
sbt = dma_alloc_bustag(dsc);
lsi64854_attach(sc);
/* Attach children */
for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
struct sbus_attach_args sa;
sbus_setup_attach_args((struct sbus_softc *)parent,
sbt, sc->sc_dmatag, node, &sa);
(void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus);
sbus_destroy_attach_args(&sa);
}
}
void *
dmabus_intr_establish(t, pri, level, flags, handler, arg)
bus_space_tag_t t;
int pri;
int level;
int flags;
int (*handler) __P((void *));
void *arg;
{
struct lsi64854_softc *sc = t->cookie;
/* XXX - for now only le; do esp later */
if (sc->sc_channel == L64854_CHANNEL_ENET) {
sc->sc_intrchain = handler;
sc->sc_intrchainarg = arg;
handler = lsi64854_enet_intr;
arg = sc;
}
return (bus_intr_establish(sc->sc_bustag, pri, level, flags,
handler, arg));
}
bus_space_tag_t
dma_alloc_bustag(sc)
struct dma_softc *sc;
{
bus_space_tag_t sbt;
sbt = (bus_space_tag_t)
malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
if (sbt == NULL)
return (NULL);
bzero(sbt, sizeof *sbt);
sbt->cookie = sc;
sbt->parent = sc->sc_lsi64854.sc_bustag;
sbt->sparc_intr_establish = dmabus_intr_establish;
return (sbt);
}