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Initial revision

/*	$OpenBSD: hyper.c,v 1.15 2006/04/14 21:05:43 miod Exp $	*/

/*
 * Copyright (c) 2005, Miodrag Vallat.
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
 *
 */
/*
 * Copyright (c) 1996 Jason R. Thorpe.  All rights reserved.
 * Copyright (c) 1991 University of Utah.
 * 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 and Mark Davies of the Department of Computer
 * Science, Victoria University of Wellington, New Zealand.
 *
 * 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 $Hdr: grf_hy.c 1.2 93/08/13$
 *
 *	@(#)grf_hy.c	8.4 (Berkeley) 1/12/94
 */

/*
 * Graphics routines for HYPERION frame buffer
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/ioctl.h>
#include <sys/proc.h>

#include <machine/autoconf.h>
#include <machine/bus.h>
#include <machine/cpu.h>

#include <hp300/dev/dioreg.h>
#include <hp300/dev/diovar.h>
#include <hp300/dev/diodevs.h>
#include <hp300/dev/intiovar.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplayvar.h>
#include <dev/rasops/rasops.h>

#include <hp300/dev/diofbreg.h>
#include <hp300/dev/diofbvar.h>
#include <hp300/dev/hyperreg.h>

struct	hyper_softc {
	struct device		sc_dev;
	struct diofb		*sc_fb;
	struct diofb		sc_fb_store;
};

int	hyper_match(struct device *, void *, void *);
void	hyper_attach(struct device *, struct device *, void *);

struct cfattach hyper_ca = {
	sizeof(struct hyper_softc), hyper_match, hyper_attach
};

struct cfdriver hyper_cd = {
	NULL, "hyper", DV_DULL
};

int	hyper_reset(struct diofb *, int, struct diofbreg *);

int	hyper_ioctl(void *, u_long, caddr_t, int, struct proc *);
void	hyper_burner(void *, u_int, u_int);

struct	wsdisplay_accessops hyper_accessops = {
	hyper_ioctl,
	diofb_mmap,
	diofb_alloc_screen,
	diofb_free_screen,
	diofb_show_screen,
	NULL,	/* load_font */
	NULL,	/* scrollback */
	NULL,	/* getchar */
	hyper_burner
};

/*
 * Attachment glue
 */

int
hyper_match(struct device *parent, void *match, void *aux)
{
	struct dio_attach_args *da = aux;

	if (da->da_id == DIO_DEVICE_ID_FRAMEBUFFER &&
	    da->da_secid == DIO_DEVICE_SECID_HYPERION)
		return (1);

	return (0);
}

void
hyper_attach(struct device *parent, struct device *self, void *aux)
{
	struct hyper_softc *sc = (struct hyper_softc *)self;
	struct dio_attach_args *da = aux;
	struct diofbreg *fbr;
	int scode;

	scode = da->da_scode;
	if (scode == conscode) {
		fbr = (struct diofbreg *)conaddr;	/* already mapped */
		sc->sc_fb = &diofb_cn;
	} else {
		sc->sc_fb = &sc->sc_fb_store;
		fbr = (struct diofbreg *)
		    iomap(dio_scodetopa(scode), da->da_size);
		if (fbr == NULL ||
		    hyper_reset(sc->sc_fb, scode, fbr) != 0) {
			printf(": can't map framebuffer\n");
			return;
		}
	}

	diofb_end_attach(self, &hyper_accessops, sc->sc_fb,
	    scode == conscode, NULL);
}

/*
 * Initialize hardware and display routines.
 */
int
hyper_reset(struct diofb *fb, int scode, struct diofbreg *fbr)
{
	volatile struct hyboxfb *hy = (struct hyboxfb *)fbr;
	int rc;

	if ((rc = diofb_fbinquire(fb, scode, fbr)) != 0)
		return (rc);

	fb->bmv = diofb_mono_windowmove;

	fb->ri.ri_depth = 1;	/* do not fake a 8bpp frame buffer */
	diofb_fbsetup(fb);

	/* enable display */
	hy->nblank = DISP_VIDEO_ENABLE | DISP_SYNC_ENABLE;

	return (0);
}

int
hyper_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p)
{
	struct diofb *fb = v;
	struct wsdisplay_fbinfo *wdf;

	switch (cmd) {
	case WSDISPLAYIO_GTYPE:
		*(u_int *)data = WSDISPLAY_TYPE_HYPERION;
		break;
	case WSDISPLAYIO_SMODE:
		fb->mapmode = *(u_int *)data;
		break;
	case WSDISPLAYIO_GINFO:
		wdf = (void *)data;
		wdf->width = fb->ri.ri_width;
		wdf->height = fb->ri.ri_height;
		wdf->depth = fb->ri.ri_depth;
		wdf->cmsize = 0;
		break;
	case WSDISPLAYIO_LINEBYTES:
		*(u_int *)data = fb->ri.ri_stride;
		break;
	case WSDISPLAYIO_GVIDEO:
	case WSDISPLAYIO_SVIDEO:
	case WSDISPLAYIO_GETCMAP:
	case WSDISPLAYIO_PUTCMAP:
		break;
	default:
		return (-1);
	}

	return (0);
}

void
hyper_burner(void *v, u_int on, u_int flags)
{
	struct diofb *fb = v;
	volatile struct hyboxfb *hy = (struct hyboxfb *)fb->regkva;

	if (on) {
		hy->nblank = DISP_VIDEO_ENABLE | DISP_SYNC_ENABLE;
	} else {
		if (flags & WSDISPLAY_BURN_VBLANK)
			hy->nblank = 0;
		else
			hy->nblank = DISP_SYNC_ENABLE;
	}
}

/*
 * Hyperion console support
 */

void
hypercninit()
{
	hyper_reset(&diofb_cn, conscode, (struct diofbreg *)conaddr);
	diofb_cnattach(&diofb_cn);
}