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/* $OpenBSD: impact_gio.c,v 1.1 2012/04/18 17:28:24 miod Exp $ */
/*
* Copyright (c) 2012 Miodrag Vallat.
*
* 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 Impact graphics board (GIO attachment).
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/types.h>
#include <machine/autoconf.h>
#include <mips64/archtype.h>
#include <mips64/arcbios.h>
#include <sgi/dev/impactreg.h>
#include <sgi/dev/impactvar.h>
#include <sgi/gio/giodevs.h>
#include <sgi/gio/gioreg.h>
#include <sgi/gio/giovar.h>
#include <sgi/sgi/ip22.h>
#define IMPACT_REG_OFFSET 0x00000000
#define IMPACT_REG_SIZE 0x00080000
int impact_gio_match(struct device *, void *, void *);
void impact_gio_attach(struct device *, struct device *, void *);
const struct cfattach impact_gio_ca = {
sizeof(struct impact_softc), impact_gio_match, impact_gio_attach
};
int
impact_gio_match(struct device *parent, void *match, void *aux)
{
struct gio_attach_args *ga = aux;
/* Impact only exists on Indigo 2 systems */
if (sys_config.system_type != SGI_IP22 ||
sys_config.system_subtype != IP22_INDIGO2)
return 0;
/* not looking for a frame buffer */
if (ga->ga_slot != -1)
return 0;
/* EXP1 does not exist on Indigo2 */
if (ga->ga_addr != GIO_ADDR_GFX && ga->ga_addr != GIO_ADDR_EXP0)
return 0;
/* Impact has a real GIO ID */
if (ga->ga_product != GIO_PRODUCT_IMPACT)
return 0;
return 1;
}
void
impact_gio_attach(struct device *parent, struct device *self, void *aux)
{
struct gio_attach_args *ga = aux;
struct impact_softc *sc = (struct impact_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;
}
console = giofb_consaddr == ga->ga_addr;
if (console != 0) {
iot = NULL;
ioh = 0;
} else {
iot = ga->ga_iot;
/* Setup bus space mappings. */
if (bus_space_map(iot, ga->ga_addr + IMPACT_REG_OFFSET,
IMPACT_REG_SIZE, 0, &ioh)) {
printf("failed to map registers\n");
return;
}
}
if (impact_attach_common(sc, iot, ioh, console, 0) != 0) {
if (console == 0)
bus_space_unmap(iot, ioh, IMPACT_REG_SIZE);
}
}
/*
* Console support.
*/
int
impact_gio_cnprobe(struct gio_attach_args *ga)
{
return impact_gio_match(NULL, NULL, ga);
}
int
impact_gio_cnattach(struct gio_attach_args *ga)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
int rc;
iot = ga->ga_iot;
rc = bus_space_map(iot, ga->ga_addr + IMPACT_REG_OFFSET,
IMPACT_REG_SIZE, 0, &ioh);
if (rc != 0)
return rc;
rc = impact_cnattach_common(iot, ioh, 0);
if (rc != 0) {
bus_space_unmap(iot, ioh, IMPACT_REG_SIZE);
return rc;
}
return 0;
}
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