NetBSD/sys/arch/sparc/dev/lebuffer.c

170 lines
4.8 KiB
C

/* $NetBSD: lebuffer.c,v 1.6 1998/04/07 20:11:54 pk Exp $ */
/*
* Copyright (c) 1996 Paul Kranenburg. 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/ioctl.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sparc/bus.h>
#include <sparc/autoconf.h>
#include <sparc/cpu.h>
#include <sparc/dev/sbusvar.h>
#include <sparc/dev/lebuffervar.h>
#include <sparc/dev/dmareg.h>/*XXX*/
int lebufprint __P((void *, const char *));
int lebufmatch __P((struct device *, struct cfdata *, void *));
void lebufattach __P((struct device *, struct device *, void *));
struct cfattach lebuffer_ca = {
sizeof(struct lebuf_softc), lebufmatch, lebufattach
};
int
lebufprint(aux, busname)
void *aux;
const char *busname;
{
struct sbus_attach_args *sa = aux;
bus_space_tag_t t = sa->sa_bustag;
struct lebuf_softc *sc = t->cookie;
sa->sa_bustag = sc->sc_bustag; /* XXX */
sbus_print(aux, busname); /* XXX */
sa->sa_bustag = t; /* XXX */
return (UNCONF);
}
int
lebufmatch(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);
}
/*
* Attach all the sub-devices we can find
*/
void
lebufattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
#if defined(SUN4C) || defined(SUN4M)
struct sbus_attach_args *sa = aux;
struct lebuf_softc *sc = (void *)self;
int node;
int sbusburst;
bus_space_tag_t sbt;
bus_space_handle_t bh;
struct bootpath *bp;
sc->sc_bustag = sa->sa_bustag;
sc->sc_dmatag = sa->sa_dmatag;
if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
sa->sa_offset,
sa->sa_size,
0, 0, &bh) != 0) {
printf("lebufattach: cannot map registers\n");
return;
}
/*
* This device's "register space" is just a buffer where the
* Lance ring-buffers can be stored. Note the buffer's location
* and size, so the `le' driver can pick them up.
*/
sc->sc_buffer = (caddr_t)bh;
sc->sc_bufsiz = sa->sa_size;
node = sc->sc_node = sa->sa_node;
/*
* Get transfer burst size from PROM
*/
sbusburst = ((struct sbus_softc *)parent)->sc_burst;
if (sbusburst == 0)
sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
sc->sc_burst = getpropint(node, "burst-sizes", -1);
if (sc->sc_burst == -1)
/* take SBus burst sizes */
sc->sc_burst = sbusburst;
/* Clamp at parent's burst sizes */
sc->sc_burst &= sbusburst;
printf("\n");
sbus_establish(&sc->sc_sd, &sc->sc_dev);
/* Propagate bootpath */
if (sa->sa_bp != NULL)
bp = sa->sa_bp + 1;
else
bp = NULL;
/* Allocate a bus tag */
sbt = (bus_space_tag_t)
malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT);
if (sbt == NULL) {
printf("lebufattach: out of memory\n");
return;
}
bzero(sbt, sizeof *sbt);
sbt->cookie = sc;
sbt->parent = sc->sc_bustag;
/* search through children */
for (node = firstchild(node); node; node = nextsibling(node)) {
struct sbus_attach_args sa;
sbus_setup_attach_args((struct sbus_softc *)parent,
sbt, sc->sc_dmatag, node, bp, &sa);
(void)config_found(&sc->sc_dev, (void *)&sa, lebufprint);
}
#endif /* SUN4C || SUN4M */
}