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/* $OpenBSD: lebuffer.c,v 1.9 2010/07/10 19:32:24 miod Exp $ */
/* $NetBSD: lebuffer.c,v 1.3 1997/05/24 20:16:28 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 <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(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
};
struct cfdriver lebuffer_cd = {
NULL, "lebuffer", DV_DULL
};
int
lebufprint(aux, name)
void *aux;
const char *name;
{
register struct confargs *ca = aux;
if (name)
printf("%s at %s", ca->ca_ra.ra_name, name);
printf(" offset 0x%x", ca->ca_offset);
return (UNCONF);
}
/*
* Match a lebuffer card in a slot capable of dma.
*/
int
lebufmatch(parent, vcf, aux)
struct device *parent;
void *vcf, *aux;
{
struct cfdata *cf = vcf;
struct confargs *ca = aux;
register struct romaux *ra = &ca->ca_ra;
if (strcmp(cf->cf_driver->cd_name, ra->ra_name))
return(0);
if (!sbus_testdma((struct sbus_softc *)parent, ca))
return(0);
return (1);
}
/*
* Attach all the sub-devices we can find
*/
void
lebufattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
#if defined(SUN4C) || defined(SUN4D) || defined(SUN4E) || defined(SUN4M)
register struct confargs *ca = aux;
struct lebuf_softc *sc = (void *)self;
int node;
struct confargs oca;
char *name;
int sbusburst;
if (ca->ca_ra.ra_vaddr == NULL || ca->ca_ra.ra_nvaddrs == 0)
ca->ca_ra.ra_vaddr =
mapiodev(ca->ca_ra.ra_reg, 0, ca->ca_ra.ra_len);
/*
* 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)ca->ca_ra.ra_vaddr;
sc->sc_bufsiz = ca->ca_ra.ra_len;
/*
* 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(ca->ca_ra.ra_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(": %dK memory\n", sc->sc_bufsiz / 1024);
node = sc->sc_node = ca->ca_ra.ra_node;
/* Propagate bootpath */
if (ca->ca_ra.ra_bp != NULL)
oca.ca_ra.ra_bp = ca->ca_ra.ra_bp + 1;
else
oca.ca_ra.ra_bp = NULL;
/* search through children */
for (node = firstchild(node); node; node = nextsibling(node)) {
name = getpropstring(node, "name");
if (!romprop(&oca.ca_ra, name, node))
continue;
sbus_translate(parent, &oca);
oca.ca_bustype = BUS_SBUS;
(void) config_found(&sc->sc_dev, (void *)&oca, lebufprint);
}
#endif /* SUN4C || SUN4D || SUN4E || SUN4M */
}
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