195 lines
6.1 KiB
C
195 lines
6.1 KiB
C
/* $NetBSD: atppc_pnpbios.c,v 1.4 2007/03/04 05:59:59 christos 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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_pnpbios.c,v 1.4 2007/03/04 05:59:59 christos 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 <machine/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 <i386/pnpbios/pnpbiosvar.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_pnpbios_match(struct device *, struct cfdata *, void *);
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static void atppc_pnpbios_attach(struct device *, struct device *, void *);
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struct atppc_pnpbios_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(atppc_pnpbios, sizeof(struct atppc_pnpbios_softc),
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atppc_pnpbios_match, atppc_pnpbios_attach, NULL, NULL);
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static int atppc_pnpbios_dma_start(struct atppc_softc *, void *, u_int,
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uint8_t);
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static int atppc_pnpbios_dma_finish(struct atppc_softc *);
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static int atppc_pnpbios_dma_abort(struct atppc_softc *);
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static int atppc_pnpbios_dma_malloc(struct device *, void **, bus_addr_t *,
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bus_size_t);
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static void atppc_pnpbios_dma_free(struct device *, void **, bus_addr_t *,
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bus_size_t);
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/*
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* atppc_pnpbios_match: autoconf(9) match routine
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*/
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static int
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atppc_pnpbios_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct pnpbiosdev_attach_args *aa = aux;
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if (strcmp(aa->idstr, "PNP0400") == 0
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|| strcmp(aa->idstr, "PNP0401") == 0)
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return (1);
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return (0);
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}
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static void
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atppc_pnpbios_attach(struct device *parent, struct device *self, void *aux)
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{
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struct atppc_softc *sc = (struct atppc_softc *) self;
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struct atppc_pnpbios_softc *asc = (struct atppc_pnpbios_softc *)self;
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struct pnpbiosdev_attach_args *aa = aux;
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sc->sc_dev_ok = ATPPC_NOATTACH;
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printf(": AT Parallel Port\n");
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if (pnpbios_io_map(aa->pbt, aa->resc, 0, &sc->sc_iot, &sc->sc_ioh)) {
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printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
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return;
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}
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/* find our DRQ */
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if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &asc->sc_drq)) {
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printf("%s: unable to get DMA channel\n",
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sc->sc_dev.dv_xname);
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return;
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}
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pnpbios_print_devres(self, aa);
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/* Attach */
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sc->sc_has = 0;
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asc->sc_ic = aa->ic;
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sc->sc_dev_ok = ATPPC_ATTACHED;
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sc->sc_ieh = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_TTY,
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atppcintr, sc);
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sc->sc_has |= ATPPC_HAS_INTR;
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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_pnpbios_dma_start;
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sc->sc_dma_finish = atppc_pnpbios_dma_finish;
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sc->sc_dma_abort = atppc_pnpbios_dma_abort;
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sc->sc_dma_malloc = atppc_pnpbios_dma_malloc;
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sc->sc_dma_free = atppc_pnpbios_dma_free;
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}
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/* Run soft configuration attach */
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atppc_sc_attach(sc);
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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_pnpbios_dma_start(struct atppc_softc *lsc, void *buf, u_int nbytes,
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uint8_t mode)
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{
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struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_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_pnpbios_dma_finish(struct atppc_softc * lsc)
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{
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struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_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_pnpbios_dma_abort(struct atppc_softc * lsc)
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{
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struct atppc_pnpbios_softc * sc = (struct atppc_pnpbios_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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int
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atppc_pnpbios_dma_malloc(struct device * 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_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) 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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void
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atppc_pnpbios_dma_free(struct device * 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_pnpbios_softc * sc = (struct atppc_pnpbios_softc *) 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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