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/* $OpenBSD: lebuffer.c,v 1.10 2012/12/05 23:20:21 deraadt Exp $ */
/* $NetBSD: lebuffer.c,v 1.12 2002/03/11 16:00:57 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.
*
* 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.
*/
#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/autoconf.h>
#include <machine/cpu.h>
#include <dev/sbus/sbusvar.h>
#include <dev/sbus/lebuffervar.h>
int lebufprint(void *, const char *);
int lebufmatch(struct device *, void *, void *);
void lebufattach(struct device *, struct device *, void *);
struct cfattach lebuffer_ca = {
sizeof(struct lebuf_softc), lebufmatch, lebufattach
};
int
lebufprint(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(struct device *parent, void *vcf, void *aux)
{
struct sbus_attach_args *sa = aux;
struct cfdata *cf = vcf;
return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
}
/*
* Attach all the sub-devices we can find
*/
void
lebufattach(struct device *parent, struct device *self, void *aux)
{
struct sbus_attach_args *sa = aux;
struct lebuf_softc *sc = (void *)self;
int node;
int sbusburst;
struct sparc_bus_space_tag *sbt;
bus_space_handle_t bh;
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,
BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) {
printf("%s: attach: cannot map registers\n", self->dv_xname);
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 = (void *)bus_space_vaddr(sa->sa_bustag, 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;
/* Allocate a bus tag */
sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT | M_ZERO);
if (sbt == NULL) {
printf("%s: attach: out of memory\n", self->dv_xname);
return;
}
printf(": %dK memory\n", sc->sc_bufsiz / 1024);
sbt->cookie = sc;
sbt->parent = sc->sc_bustag;
sbt->asi = sbt->parent->asi;
sbt->sasi = sbt->parent->sasi;
/* 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, &sa);
(void)config_found(&sc->sc_dev, (void *)&sa, lebufprint);
sbus_destroy_attach_args(&sa);
}
}
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