NetBSD/sys/dev/sbus/qec.c

254 lines
6.8 KiB
C

/* $NetBSD: qec.c,v 1.3 1998/07/29 18:33:27 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.
*/
#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 <machine/bus.h>
#include <machine/autoconf.h>
#include <dev/sbus/sbusvar.h>
#include <dev/sbus/qecreg.h>
#include <dev/sbus/qecvar.h>
static int qecprint __P((void *, const char *));
static int qecmatch __P((struct device *, struct cfdata *, void *));
static void qecattach __P((struct device *, struct device *, void *));
static int qec_bus_map __P((
bus_space_tag_t,
bus_type_t, /*slot*/
bus_addr_t, /*offset*/
bus_size_t, /*size*/
int, /*flags*/
vm_offset_t, /*preferred virtual address */
bus_space_handle_t *));
struct cfattach qec_ca = {
sizeof(struct qec_softc), qecmatch, qecattach
};
int
qecprint(aux, busname)
void *aux;
const char *busname;
{
struct sbus_attach_args *sa = aux;
bus_space_tag_t t = sa->sa_bustag;
struct qec_softc *sc = t->cookie;
sa->sa_bustag = sc->sc_bustag; /* XXX */
sbus_print(aux, busname); /* XXX */
sa->sa_bustag = t; /* XXX */
return (UNCONF);
}
int
qecmatch(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
qecattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct sbus_attach_args *sa = aux;
struct qec_softc *sc = (void *)self;
int node;
int sbusburst;
bus_space_tag_t sbt;
bus_space_handle_t bh;
struct bootpath *bp;
int error;
int nreg;
struct rom_reg *rr;
sc->sc_bustag = sa->sa_bustag;
sc->sc_dmatag = sa->sa_dmatag;
node = sa->sa_node;
rr = NULL;
if (getpropA(node, "reg", sizeof(struct rom_reg),
&nreg, (void **)&rr) != 0) {
printf("%s: cannot get register property\n", self->dv_xname);
return;
}
if (nreg < 2) {
printf("%s: only %d register sets\n", self->dv_xname, nreg);
return;
}
if (sbus_bus_map(sa->sa_bustag,
(bus_type_t)rr[0].rr_iospace,
(bus_addr_t)rr[0].rr_paddr,
(bus_size_t)rr[0].rr_len,
BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) {
printf("%s: attach: cannot map registers\n", self->dv_xname);
return;
}
sc->sc_regs = (void *)bh;
/*
* This device's "register space 1" is just a buffer where the
* Lance ring-buffers can be stored. Note the buffer's location
* and size, so the child driver can pick them up.
*/
if (sbus_bus_map(sa->sa_bustag,
(bus_type_t)rr[1].rr_iospace,
(bus_addr_t)rr[1].rr_paddr,
(bus_size_t)rr[1].rr_len,
BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) {
printf("%s: attach: cannot map registers\n", self->dv_xname);
return;
}
sc->sc_buffer = (caddr_t)bh;
sc->sc_bufsiz = (bus_size_t)rr[1].rr_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(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;
sbus_establish(&sc->sc_sd, &sc->sc_dev);
/*
* Collect address translations from the OBP.
*/
error = getpropA(node, "ranges", sizeof(struct sbus_range),
&sc->sc_nrange, (void **)&sc->sc_range);
switch (error) {
case 0:
break;
case ENOENT:
default:
panic("%s: error getting ranges property", self->dv_xname);
}
/* 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("%s: attach: out of memory\n", self->dv_xname);
return;
}
bzero(sbt, sizeof *sbt);
sbt->cookie = sc;
sbt->parent = sc->sc_bustag;
sbt->sparc_bus_map = qec_bus_map;
printf(": %dK memory\n", sc->sc_bufsiz / 1024);
/* 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, qecprint);
sbus_destroy_attach_args(&sa);
}
free(rr, M_DEVBUF);
}
int
qec_bus_map(t, btype, offset, size, flags, vaddr, hp)
bus_space_tag_t t;
bus_type_t btype;
bus_addr_t offset;
bus_size_t size;
int flags;
vm_offset_t vaddr;
bus_space_handle_t *hp;
{
struct qec_softc *sc = t->cookie;
int slot = btype;
int i;
for (i = 0; i < sc->sc_nrange; i++) {
bus_addr_t paddr;
bus_type_t iospace;
if (sc->sc_range[i].cspace != slot)
continue;
/* We've found the connection to the parent bus */
paddr = sc->sc_range[i].poffset + offset;
iospace = sc->sc_range[i].pspace;
return (bus_space_map2(sc->sc_bustag, iospace, paddr,
size, flags, vaddr, hp));
}
return (EINVAL);
}