NetBSD/sys/arch/x68k/dev/grf_machdep.c

/*	$NetBSD: grf_machdep.c,v 1.27 2007/03/04 06:01:06 christos Exp $	*/

/*
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 * from: Utah $Hdr: grf_machdep.c 1.1 92/01/21
 *
 *	@(#)grf_machdep.c	8.2 (Berkeley) 1/12/94
 */
/*
 * Copyright (c) 1991 University of Utah.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * 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 University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
 *
 * from: Utah $Hdr: grf_machdep.c 1.1 92/01/21
 *
 *	@(#)grf_machdep.c	8.2 (Berkeley) 1/12/94
 */

/*
 * Graphics display driver for the HP300/400 DIO/DIO-II based machines.
 * This is the hardware-dependent configuration portion of the driver.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: grf_machdep.c,v 1.27 2007/03/04 06:01:06 christos Exp $");

#include "locators.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>

#include <machine/grfioctl.h>
#include <x68k/dev/grfvar.h>
#include <x68k/x68k/iodevice.h>

/*
 * false when initing for the console.
 */
extern int x68k_realconfig;
extern int x68k_config_found(struct cfdata *, struct device *,
			     void *, cfprint_t);

/* grfbus: is this necessary? */
int grfbusprint(void *auxp, const char *);
int grfbusmatch(struct device *, struct cfdata *, void *);
void grfbusattach(struct device *, struct device *, void *);
int grfbussearch(struct device *, struct cfdata *, const int *, void *);

/* grf itself */
void grfattach(struct device *, struct device *, void *);
int grfmatch(struct device *, struct cfdata *, void *);
int grfprint(void *, const char *);

static int grfinit(void *, int);

CFATTACH_DECL(grfbus, sizeof(struct device),
    grfbusmatch, grfbusattach, NULL, NULL);

CFATTACH_DECL(grf, sizeof(struct grf_softc),
    grfmatch, grfattach, NULL, NULL);

/*
 * only used in console init.
 */
static struct cfdata *cfdata_gbus;
static struct cfdata *cfdata_grf;

extern struct cfdriver grfbus_cd;

int
grfbusmatch(struct device *pdp, struct cfdata *cfp, void *auxp)
{
	if (strcmp(auxp, grfbus_cd.cd_name))
		return (0);

	if ((x68k_realconfig == 0) || (cfdata_gbus == NULL)) {

		/*
		 * Probe layers we depend on
		 */
		if (x68k_realconfig == 0) {
			cfdata_gbus = cfp;
		}
	}
	return (1);
}

void
grfbusattach(struct device *pdp, struct device *dp, void *auxp)
{
	int i;

	if (dp == NULL) {
		i = 0;
		x68k_config_found(cfdata_gbus, NULL, &i, grfbusprint);
	} else {
		printf("\n");
		config_search_ia(grfbussearch, dp, "grfb", NULL);
	}
}

int
grfbussearch(struct device *dp, struct cfdata *match,
	     const int *ldesc, void *aux)
{

	config_found(dp, &match->cf_loc[GRFBCF_ADDR], grfbusprint);
	return (0);
}

int
grfbusprint(void *auxp, const char *name)
{

	if (name == NULL)
		return (UNCONF);
	return (QUIET);
}

/*
 * Normal init routine called by configure() code
 */
int
grfmatch(struct device *parent, struct cfdata *cfp, void *aux)
{
	int addr;

	addr = cfp->cf_loc[GRFBCF_ADDR];
	if (x68k_realconfig == 0) {
		if (addr != 0)
			return 0;
		cfdata_grf = cfp;
	}

	if (addr < 0 || addr > ngrfsw)
		return 0;

	return 1;
}

static struct grf_softc	congrf;

void
grfattach(struct device *parent, struct device *dp, void *aux)
{
	struct grf_softc *gp;
	struct cfdata *cf;
	int addr;

	/*
	 * Handle exeption case: early console init
	 */
	if (dp == NULL) {
		/* Attach console ite */
		grfinit(&congrf, 0);
		x68k_config_found(cfdata_grf, NULL, &congrf, grfprint);
		return;
	}

	cf = device_cfdata(dp);
	addr = cf->cf_loc[GRFBCF_ADDR];
	grfinit(dp, addr);

	gp = (struct grf_softc *)dp;
	gp->g_cfaddr = addr;
	printf(": %d x %d ", gp->g_display.gd_dwidth, gp->g_display.gd_dheight);
	if (gp->g_display.gd_colors == 2)
		printf("monochrome");
	else
		printf("%d colors", gp->g_display.gd_colors);
	printf(" %s display\n", gp->g_sw->gd_desc);

	/*
	 * try and attach an ite
	 */
	config_found(dp, gp, grfprint);
}

int
grfprint(void *auxp, const char *pnp)
{

	if (pnp)
		aprint_normal("ite at %s", pnp);
	return UNCONF;
}

int
grfinit(void *dp, int cfaddr)
{
	struct grf_softc *gp = dp;
	struct grfsw *gsw;
	void *addr;

	if (cfaddr == 0)
		addr = (void *)__UNVOLATILE(IODEVbase->tvram);
	else
		addr = (void *)__UNVOLATILE(IODEVbase->gvram);

	gsw = &grfsw[cfaddr];
	if (gsw < &grfsw[ngrfsw] && (*gsw->gd_init)(gp, addr)) {
		gp->g_sw = gsw;
		gp->g_display.gd_id = gsw->gd_swid;
		gp->g_flags = GF_ALIVE;
		return 1;
	}

	return 0;
}