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/* $OpenBSD: qec.c,v 1.5 1998/08/26 00:57:04 jason Exp $ */
/*
* Copyright (c) 1998 Theo de Raadt and Jason L. Wright.
* 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. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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/autoconf.h>
#include <sparc/cpu.h>
#include <sparc/dev/sbusvar.h>
#include <sparc/dev/dmareg.h>
#include <sparc/dev/qecreg.h>
#include <sparc/dev/qecvar.h>
int qecprint __P((void *, const char *));
void qecattach __P((struct device *, struct device *, void *));
void qec_fix_range __P((struct qec_softc *, struct sbus_softc *));
void qec_translate __P((struct qec_softc *, struct confargs *));
struct cfattach qec_ca = {
sizeof(struct qec_softc), matchbyname, qecattach
};
struct cfdriver qec_cd = {
NULL, "qec", DV_DULL
};
int
qecprint(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);
}
/*
* Attach all the sub-devices we can find
*/
void
qecattach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
register struct confargs *ca = aux;
struct qec_softc *sc = (void *)self;
int node;
struct confargs oca;
char *name;
int sbusburst;
/*
* The first IO space is the QEC registers, the second IO
* space is the QEC (64K we hope) ram buffer
*/
sc->sc_regs = mapiodev(&ca->ca_ra.ra_reg[0], 0,
sizeof(struct qecregs));
sc->sc_buffer = mapiodev(&ca->ca_ra.ra_reg[1], 0,
ca->ca_ra.ra_reg[1].rr_len);
sc->sc_bufsiz = ca->ca_ra.ra_reg[1].rr_len;
node = sc->sc_node = ca->ca_ra.ra_node;
qec_fix_range(sc, (struct sbus_softc *)parent);
/*
* 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", sc->sc_bufsiz / 1024);
node = sc->sc_node = ca->ca_ra.ra_node;
if (ca->ca_bustype == BUS_SBUS)
sbus_establish(&sc->sc_sd, &sc->sc_dev);
/* 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;
printf("\n");
/* search through children */
for (node = firstchild(node); node; node = nextsibling(node)) {
name = getpropstring(node, "name");
if (!romprop(&oca.ca_ra, name, node))
continue;
qec_translate(sc, &oca);
oca.ca_bustype = BUS_SBUS;
(void) config_found(&sc->sc_dev, (void *)&oca, qecprint);
}
}
void
qec_fix_range(sc, sbp)
struct qec_softc *sc;
struct sbus_softc *sbp;
{
int rlen, i, j;
rlen = getproplen(sc->sc_node, "ranges");
sc->sc_range =
(struct rom_range *)malloc(rlen, M_DEVBUF, M_NOWAIT);
if (sc->sc_range == NULL) {
printf("%s: PROM ranges too large: %d\n",
sc->sc_dev.dv_xname, rlen);
return;
}
sc->sc_nrange = rlen / sizeof(struct rom_range);
(void)getprop(sc->sc_node, "ranges", sc->sc_range, rlen);
for (i = 0; i < sc->sc_nrange; i++) {
for (j = 0; j < sbp->sc_nrange; j++) {
if (sc->sc_range[i].pspace == sbp->sc_range[j].cspace) {
sc->sc_range[i].poffset +=
sbp->sc_range[j].poffset;
sc->sc_range[i].pspace =
sbp->sc_range[j].pspace;
break;
}
}
}
}
/*
* Translate the register addresses of our children
*/
void
qec_translate(sc, ca)
struct qec_softc *sc;
struct confargs *ca;
{
register int i;
ca->ca_slot = ca->ca_ra.ra_iospace;
ca->ca_offset = (int)ca->ca_ra.ra_paddr;
/* Translate into parent address spaces */
for (i = 0; i < ca->ca_ra.ra_nreg; i++) {
int j, cspace = ca->ca_ra.ra_reg[i].rr_iospace;
for (j = 0; j < sc->sc_nrange; j++) {
if (sc->sc_range[j].cspace == cspace) {
(int)ca->ca_ra.ra_reg[i].rr_paddr +=
sc->sc_range[j].poffset;
(int)ca->ca_ra.ra_reg[i].rr_iospace =
sc->sc_range[j].pspace;
break;
}
}
}
}
/*
* Reset the QEC
*/
void
qec_reset(sc)
struct qec_softc *sc;
{
int i = 200;
sc->sc_regs->ctrl = QEC_CTRL_RESET;
while (--i) {
if ((sc->sc_regs->ctrl & QEC_CTRL_RESET) == 0)
break;
DELAY(20);
}
if (i == 0) {
printf("%s: reset failed.\n", sc->sc_dev.dv_xname);
return;
}
}
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