/* $NetBSD: atppc_acpi.c,v 1.22 2021/01/29 15:49:55 thorpej 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_acpi.c,v 1.22 2021/01/29 15:49:55 thorpej Exp $");

#include "opt_atppc.h"

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

#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_intr.h>

#include <dev/ic/atppcvar.h>

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

static int      atppc_acpi_match(device_t, cfdata_t, void *);
static void     atppc_acpi_attach(device_t, device_t, void *);

struct atppc_acpi_softc {
       struct atppc_softc sc_atppc;

       isa_chipset_tag_t sc_ic;
       int sc_drq;
};

CFATTACH_DECL_NEW(atppc_acpi, sizeof(struct atppc_acpi_softc), atppc_acpi_match,
   atppc_acpi_attach, NULL, NULL);

/*
* Supported device IDs
*/

static const struct device_compatible_entry compat_data[] = {
       { .compat = "PNP04??" },        /* Standard AT printer port */
       DEVICE_COMPAT_EOL
};

static int atppc_acpi_dma_start(struct atppc_softc *, void *, u_int,
       u_int8_t);
static int atppc_acpi_dma_finish(struct atppc_softc *);
static int atppc_acpi_dma_abort(struct atppc_softc *);
static int atppc_acpi_dma_malloc(device_t, void **, bus_addr_t *,
       bus_size_t);
static void atppc_acpi_dma_free(device_t, void **, bus_addr_t *,
       bus_size_t);
/*
* atppc_acpi_match: autoconf(9) match routine
*/
static int
atppc_acpi_match(device_t parent, cfdata_t match, void *aux)
{
       struct acpi_attach_args *aa = aux;

       return acpi_compatible_match(aa, compat_data);
}

static void
atppc_acpi_attach(device_t parent, device_t self, void *aux)
{
       struct atppc_softc *sc = device_private(self);
       struct atppc_acpi_softc *asc = device_private(self);
       struct acpi_attach_args *aa = aux;
       struct acpi_resources res;
       struct acpi_io *io;
       struct acpi_drq *drq;
       ACPI_STATUS rv;

       sc->sc_dev_ok = ATPPC_NOATTACH;

       sc->sc_dev = self;

       /* parse resources */
       rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
                                &res, &acpi_resource_parse_ops_default);
       if (ACPI_FAILURE(rv))
               return;

       /* find our i/o registers */
       io = acpi_res_io(&res, 0);
       if (io == NULL) {
               aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
               goto out;
       }

       /* find our DRQ */
       drq = acpi_res_drq(&res, 0);
       if (drq == NULL) {
               aprint_error_dev(sc->sc_dev, "unable to find drq resource\n");
               goto out;
       }
       asc->sc_drq = drq->ar_drq;

       /* Attach */
       sc->sc_iot = aa->aa_iot;
       sc->sc_has = 0;
       asc->sc_ic = aa->aa_ic;

       sc->sc_dev_ok = ATPPC_ATTACHED;

       if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 0,
               &sc->sc_ioh) != 0) {
               aprint_error_dev(self, "attempt to map bus space failed, device not "
                       "properly attached.\n");
               goto out;
       }

       sc->sc_ieh = acpi_intr_establish(self,
           (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
           IPL_TTY, false, atppcintr, self, device_xname(self));
       if (sc->sc_ieh == NULL) {
               aprint_error_dev(self, "unable to establish interrupt\n");
               goto out;
       }

       /* 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_acpi_dma_start;
               sc->sc_dma_finish = atppc_acpi_dma_finish;
               sc->sc_dma_abort = atppc_acpi_dma_abort;
               sc->sc_dma_malloc = atppc_acpi_dma_malloc;
               sc->sc_dma_free = atppc_acpi_dma_free;
       }

       sc->sc_has |= ATPPC_HAS_INTR;

       /* Run soft configuration attach */
       atppc_sc_attach(sc);
out:
       acpi_resource_cleanup(&res);
}

/* Start DMA operation over ISA bus */
static int
atppc_acpi_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
       u_int8_t mode)
{
       struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;

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

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

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

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

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

/* Allocate memory for DMA over ISA bus */
static int
atppc_acpi_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
       bus_size_t size)
{
       struct atppc_acpi_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() */
static void
atppc_acpi_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
       bus_size_t size)
{
       struct atppc_acpi_softc * sc = device_private(dev);

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

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