/* $NetBSD: atppc_pnpbios.c,v 1.9 2011/07/01 18:14:15 dyoung Exp $ */

/* $NetBSD: atppc_pnpbios.c,v 1.9 2011/07/01 18:14:15 dyoung Exp $ */

/*-
* Copyright (c) 2004 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jaromir Dolecek.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: atppc_pnpbios.c,v 1.9 2011/07/01 18:14:15 dyoung Exp $");

#include "opt_atppc.h"

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/syslog.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/termios.h>

#include <sys/bus.h>

#include <dev/isa/isavar.h>
#include <dev/isa/isadmavar.h>

#include <i386/pnpbios/pnpbiosvar.h>

#include <dev/ic/atppcvar.h>
#include <dev/isa/atppc_isadma.h>

static int atppc_pnpbios_match(device_t, cfdata_t, void *);
static void atppc_pnpbios_attach(device_t, device_t, void *);

struct atppc_pnpbios_softc {
struct atppc_softc sc_atppc;

isa_chipset_tag_t sc_ic;
int sc_drq;
};

CFATTACH_DECL_NEW(atppc_pnpbios, sizeof(struct atppc_pnpbios_softc),
atppc_pnpbios_match, atppc_pnpbios_attach, NULL, NULL);

static int atppc_pnpbios_dma_start(struct atppc_softc *, void *, u_int,
uint8_t);
static int atppc_pnpbios_dma_finish(struct atppc_softc *);
static int atppc_pnpbios_dma_abort(struct atppc_softc *);
static int atppc_pnpbios_dma_malloc(device_t, void **, bus_addr_t *,
bus_size_t);
static void atppc_pnpbios_dma_free(device_t, void **, bus_addr_t *,
bus_size_t);

/*
* atppc_pnpbios_match: autoconf(9) match routine
*/
static int
atppc_pnpbios_match(device_t parent, cfdata_t match, void *aux)
{
struct pnpbiosdev_attach_args *aa = aux;

if (strcmp(aa->idstr, "PNP0400") == 0
|| strcmp(aa->idstr, "PNP0401") == 0)
return (1);

return (0);
}

static void
atppc_pnpbios_attach(device_t parent, device_t self, void *aux)
{
struct atppc_softc *sc = device_private(self);
struct atppc_pnpbios_softc *asc = device_private(self);
struct pnpbiosdev_attach_args *aa = aux;

sc->sc_dev_ok = ATPPC_NOATTACH;

printf(": AT Parallel Port\n");

if (pnpbios_io_map(aa->pbt, aa->resc, 0, &sc->sc_iot, &sc->sc_ioh)) {
aprint_error_dev(sc->sc_dev, "can't map i/o space\n");
return;
}

/* find our DRQ */
if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &asc->sc_drq)) {
aprint_error_dev(sc->sc_dev, "unable to get DMA channel\n");
return;
}

pnpbios_print_devres(self, aa);

/* Attach */
sc->sc_dev = self;
sc->sc_has = 0;
asc->sc_ic = aa->ic;
sc->sc_dev_ok = ATPPC_ATTACHED;

sc->sc_ieh = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_TTY,
atppcintr, sc);
sc->sc_has |= ATPPC_HAS_INTR;

/* setup DMA hooks */
if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
sc->sc_has |= ATPPC_HAS_DMA;
sc->sc_dma_start = atppc_pnpbios_dma_start;
sc->sc_dma_finish = atppc_pnpbios_dma_finish;
sc->sc_dma_abort = atppc_pnpbios_dma_abort;
sc->sc_dma_malloc = atppc_pnpbios_dma_malloc;
sc->sc_dma_free = atppc_pnpbios_dma_free;
}

/* Run soft configuration attach */
atppc_sc_attach(sc);
}

/* Start DMA operation over ISA bus */
static int
atppc_pnpbios_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
uint8_t mode)
{
struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;

return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
}

/* Stop DMA operation over ISA bus */
static int
atppc_pnpbios_dma_finish(struct atppc_softc * lsc)
{
struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;

return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
}

/* Abort DMA operation over ISA bus */
int
atppc_pnpbios_dma_abort(struct atppc_softc * lsc)
{
struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) lsc;

return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
}

/* Allocate memory for DMA over ISA bus */
int
atppc_pnpbios_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
bus_size_t size)
{
struct atppc_pnpbios_softc * sc = device_private(dev);

return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
}

/* Free memory allocated by atppc_isa_dma_malloc() */
void
atppc_pnpbios_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
bus_size_t size)
{
struct atppc_pnpbios_softc * sc = device_private(dev);

return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
}