231 lines
6.4 KiB
C
231 lines
6.4 KiB
C
/* $NetBSD: atppc_acpi.c,v 1.16 2009/02/17 12:46:01 jmcneill Exp $ */
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/*-
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* Copyright (c) 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jaromir Dolecek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: atppc_acpi.c,v 1.16 2009/02/17 12:46:01 jmcneill Exp $");
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#include "opt_atppc.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/syslog.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/termios.h>
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#include <sys/bus.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/acpi/acpica.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/ic/atppcvar.h>
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#include <dev/isa/atppc_isadma.h>
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static int atppc_acpi_match(device_t, cfdata_t, void *);
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static void atppc_acpi_attach(device_t, device_t, void *);
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struct atppc_acpi_softc {
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struct atppc_softc sc_atppc;
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isa_chipset_tag_t sc_ic;
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int sc_drq;
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};
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CFATTACH_DECL_NEW(atppc_acpi, sizeof(struct atppc_acpi_softc), atppc_acpi_match,
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atppc_acpi_attach, NULL, NULL);
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/*
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* Supported device IDs
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*/
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static const char * const atppc_acpi_ids[] = {
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"PNP04??", /* Standard AT printer port */
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NULL
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};
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static int atppc_acpi_dma_start(struct atppc_softc *, void *, u_int,
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u_int8_t);
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static int atppc_acpi_dma_finish(struct atppc_softc *);
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static int atppc_acpi_dma_abort(struct atppc_softc *);
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static int atppc_acpi_dma_malloc(device_t, void **, bus_addr_t *,
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bus_size_t);
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static void atppc_acpi_dma_free(device_t, void **, bus_addr_t *,
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bus_size_t);
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/*
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* atppc_acpi_match: autoconf(9) match routine
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*/
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static int
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atppc_acpi_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, atppc_acpi_ids);
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}
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static void
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atppc_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct atppc_softc *sc = device_private(self);
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struct atppc_acpi_softc *asc = device_private(self);
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struct acpi_attach_args *aa = aux;
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struct acpi_resources res;
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struct acpi_io *io;
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struct acpi_irq *irq;
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struct acpi_drq *drq;
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ACPI_STATUS rv;
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int nirq;
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sc->sc_dev_ok = ATPPC_NOATTACH;
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sc->sc_dev = self;
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/* parse resources */
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rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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/* find our i/o registers */
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io = acpi_res_io(&res, 0);
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if (io == NULL) {
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aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
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goto out;
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}
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/* find our IRQ */
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irq = acpi_res_irq(&res, 0);
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if (irq == NULL) {
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aprint_error_dev(sc->sc_dev, "unable to find irq resource\n");
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goto out;
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}
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nirq = irq->ar_irq;
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/* find our DRQ */
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drq = acpi_res_drq(&res, 0);
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if (drq == NULL) {
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aprint_error_dev(sc->sc_dev, "unable to find drq resource\n");
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goto out;
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}
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asc->sc_drq = drq->ar_drq;
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/* Attach */
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sc->sc_iot = aa->aa_iot;
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sc->sc_has = 0;
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asc->sc_ic = aa->aa_ic;
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sc->sc_dev_ok = ATPPC_ATTACHED;
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if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 0,
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&sc->sc_ioh) != 0) {
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aprint_error_dev(self, "attempt to map bus space failed, device not "
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"properly attached.\n");
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goto out;
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}
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sc->sc_ieh = isa_intr_establish(aa->aa_ic, nirq,
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(irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
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IPL_TTY, atppcintr, sc->sc_dev);
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/* setup DMA hooks */
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if (atppc_isadma_setup(sc, asc->sc_ic, asc->sc_drq) == 0) {
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sc->sc_has |= ATPPC_HAS_DMA;
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sc->sc_dma_start = atppc_acpi_dma_start;
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sc->sc_dma_finish = atppc_acpi_dma_finish;
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sc->sc_dma_abort = atppc_acpi_dma_abort;
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sc->sc_dma_malloc = atppc_acpi_dma_malloc;
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sc->sc_dma_free = atppc_acpi_dma_free;
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}
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sc->sc_has |= ATPPC_HAS_INTR;
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/* Run soft configuration attach */
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atppc_sc_attach(sc);
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out:
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acpi_resource_cleanup(&res);
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}
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/* Start DMA operation over ISA bus */
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static int
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atppc_acpi_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
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u_int8_t mode)
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{
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struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
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return atppc_isadma_start(sc->sc_ic, sc->sc_drq, buf, nbytes, mode);
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}
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/* Stop DMA operation over ISA bus */
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static int
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atppc_acpi_dma_finish(struct atppc_softc * lsc)
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{
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struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
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return atppc_isadma_finish(sc->sc_ic, sc->sc_drq);
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}
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/* Abort DMA operation over ISA bus */
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int
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atppc_acpi_dma_abort(struct atppc_softc * lsc)
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{
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struct atppc_acpi_softc * sc = (struct atppc_acpi_softc *) lsc;
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return atppc_isadma_abort(sc->sc_ic, sc->sc_drq);
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}
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/* Allocate memory for DMA over ISA bus */
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static int
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atppc_acpi_dma_malloc(device_t dev, void ** buf, bus_addr_t * bus_addr,
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bus_size_t size)
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{
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struct atppc_acpi_softc * sc = device_private(dev);
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return atppc_isadma_malloc(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
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}
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/* Free memory allocated by atppc_isa_dma_malloc() */
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static void
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atppc_acpi_dma_free(device_t dev, void ** buf, bus_addr_t * bus_addr,
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bus_size_t size)
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{
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struct atppc_acpi_softc * sc = device_private(dev);
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return atppc_isadma_free(sc->sc_ic, sc->sc_drq, buf, bus_addr, size);
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}
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