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/* $OpenBSD: impact_xbow.c,v 1.2 2017/09/08 05:36:52 deraadt Exp $ */
/*
* Copyright (c) 2010, 2012 Miodrag Vallat.
* Copyright (c) 2009, 2010 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Driver for the SGI ImpactSR graphics board (XBow attachment).
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <mips64/arcbios.h>
#include <sgi/dev/impactvar.h>
#include <sgi/xbow/widget.h>
#include <sgi/xbow/xbow.h>
#include <sgi/xbow/xbowdevs.h>
#define IMPACTSR_REG_OFFSET 0x00000000
#define IMPACTSR_REG_SIZE 0x00200000
struct impact_xbow_softc {
struct impact_softc sc_base;
struct mips_bus_space iot_store;
};
int impact_xbow_match(struct device *, void *, void *);
void impact_xbow_attach(struct device *, struct device *, void *);
const struct cfattach impact_xbow_ca = {
sizeof(struct impact_xbow_softc), impact_xbow_match, impact_xbow_attach
};
int impact_xbow_is_console(struct xbow_attach_args *);
int
impact_xbow_match(struct device *parent, void *match, void *aux)
{
struct xbow_attach_args *xaa = aux;
if (xaa->xaa_vendor == XBOW_VENDOR_SGI5 &&
xaa->xaa_product == XBOW_PRODUCT_SGI5_IMPACT)
return 1;
return 0;
}
void
impact_xbow_attach(struct device *parent, struct device *self, void *aux)
{
struct xbow_attach_args *xaa = aux;
struct impact_xbow_softc *sc = (struct impact_xbow_softc *)self;
bus_space_tag_t iot;
bus_space_handle_t ioh;
int console;
if (strncmp(bios_graphics, "alive", 5) != 0) {
printf(" device has not been setup by firmware!\n");
return;
}
printf(" revision %d\n", xaa->xaa_revision);
console = impact_xbow_is_console(xaa);
if (console != 0) {
iot = NULL;
ioh = 0;
} else {
/*
* Create a copy of the bus space tag.
*/
bcopy(xaa->xaa_iot, &sc->iot_store,
sizeof(struct mips_bus_space));
iot = &sc->iot_store;
/* Setup bus space mappings. */
if (bus_space_map(iot, IMPACTSR_REG_OFFSET,
IMPACTSR_REG_SIZE, 0, &ioh)) {
printf("failed to map registers\n");
return;
}
}
if (impact_attach_common(&sc->sc_base, iot, ioh, console, 1) != 0) {
if (console == 0)
bus_space_unmap(iot, ioh, IMPACTSR_REG_SIZE);
}
}
/*
* Console support.
*/
int
impact_xbow_cnprobe()
{
u_int32_t wid, vendor, product;
if (xbow_widget_id(console_output.nasid, console_output.widget,
&wid) != 0)
return 0;
vendor = WIDGET_ID_VENDOR(wid);
product = WIDGET_ID_PRODUCT(wid);
if (vendor != XBOW_VENDOR_SGI5 || product != XBOW_PRODUCT_SGI5_IMPACT)
return 0;
if (strncmp(bios_graphics, "alive", 5) != 0)
return 0;
return 1;
}
int
impact_xbow_cnattach()
{
static struct mips_bus_space impact_iot_store;
bus_space_tag_t iot;
bus_space_handle_t ioh;
int rc;
/* Build bus space accessor. */
xbow_build_bus_space(&impact_iot_store, console_output.nasid,
console_output.widget);
iot = &impact_iot_store;
rc = bus_space_map(iot, IMPACTSR_REG_OFFSET, IMPACTSR_REG_SIZE,
0, &ioh);
if (rc != 0)
return rc;
rc = impact_cnattach_common(iot, ioh, 1);
if (rc != 0) {
bus_space_unmap(iot, ioh, IMPACTSR_REG_SIZE);
return rc;
}
return 0;
}
int
impact_xbow_is_console(struct xbow_attach_args *xaa)
{
return xaa->xaa_nasid == console_output.nasid &&
xaa->xaa_widget == console_output.widget;
}
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