/*	$OpenBSD: qec.c,v 1.4 1998/07/05 09:24:22 deraadt Exp $	*/

/*
 * Copyright (c) 1998 Theo de Raadt.  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 author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * 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.
 */

#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 *));

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;

	/*
	 * 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;

		sbus_translate(parent, &oca);
		oca.ca_bustype = BUS_SBUS;
		(void) config_found(&sc->sc_dev, (void *)&oca, qecprint);
	}
}