217 lines
6.3 KiB
C
217 lines
6.3 KiB
C
/* $NetBSD: atppc_ofisa.c,v 1.10 2008/04/28 20:23:54 martin 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_ofisa.c,v 1.10 2008/04/28 20:23:54 martin 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/ofw/openfirm.h>
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#include <dev/isa/isavar.h>
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#include <dev/ofisa/ofisavar.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_ofisa_match(device_t, cfdata_t, void *);
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static void atppc_ofisa_attach(device_t, device_t, void *);
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struct atppc_ofisa_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_ofisa, sizeof(struct atppc_ofisa_softc), atppc_ofisa_match,
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atppc_ofisa_attach, NULL, NULL);
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static int atppc_ofisa_dma_start(struct atppc_softc *, void *, u_int,
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u_int8_t);
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static int atppc_ofisa_dma_finish(struct atppc_softc *);
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static int atppc_ofisa_dma_abort(struct atppc_softc *);
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static int atppc_ofisa_dma_malloc(device_t, void **, bus_addr_t *,
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bus_size_t);
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static void atppc_ofisa_dma_free(device_t, void **, bus_addr_t *,
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bus_size_t);
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/*
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* atppc_ofisa_match: autoconf(9) match routine
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*/
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static int
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atppc_ofisa_match(device_t parent, cfdata_t match, void *aux)
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{
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struct ofisa_attach_args *aa = aux;
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static const char *const compatible_strings[] = { "pnpPNP,401", NULL };
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int rv = 0;
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if (of_compatible(aa->oba.oba_phandle, compatible_strings) != -1)
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rv = 5;
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#ifdef _LPT_OFISA_MD_MATCH
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if (!rv)
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rv = lpt_ofisa_md_match(parent, match, aux);
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#endif
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return (rv);
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}
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static void
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atppc_ofisa_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_ofisa_softc *asc = device_private(self);
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struct ofisa_attach_args *aa = aux;
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struct ofisa_reg_desc reg;
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struct ofisa_intr_desc intr;
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struct ofisa_dma_desc dma;
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int n;
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sc->sc_dev_ok = ATPPC_NOATTACH;
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printf(": AT Parallel Port\n");
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/* find our I/O space */
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n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1);
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#ifdef _LPT_OFISA_MD_REG_FIXUP
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n = lpt_ofisa_md_reg_fixup(parent, self, aux, ®, 1, n);
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#endif
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if (n != 1) {
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aprint_error_dev(sc->sc_dev, "unable to find i/o register resource\n");
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return;
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}
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/* find our IRQ */
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n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
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#ifdef _LPT_OFISA_MD_INTR_FIXUP
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n = lpt_ofisa_md_intr_fixup(parent, self, aux, &intr, 1, n);
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#endif
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if (n != 1) {
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aprint_error_dev(sc->sc_dev, "unable to find irq resource\n");
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return;
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}
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/* find our DRQ */
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if (ofisa_dma_get(aa->oba.oba_phandle, &dma, 1) != 1) {
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aprint_error_dev(sc->sc_dev, "unable to find DMA data\n");
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return;
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}
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asc->sc_drq = dma.drq;
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/* Attach */
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sc->sc_dev = self;
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sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
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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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if (bus_space_map(sc->sc_iot, reg.addr, reg.len, 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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return;
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}
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sc->sc_ieh = isa_intr_establish(aa->ic, intr.irq, intr.share,
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IPL_TTY, 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_ofisa_dma_start;
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sc->sc_dma_finish = atppc_ofisa_dma_finish;
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sc->sc_dma_abort = atppc_ofisa_dma_abort;
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sc->sc_dma_malloc = atppc_ofisa_dma_malloc;
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sc->sc_dma_free = atppc_ofisa_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_ofisa_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_ofisa_softc * sc = (struct atppc_ofisa_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_ofisa_dma_finish(struct atppc_softc * lsc)
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{
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struct atppc_ofisa_softc * sc = (struct atppc_ofisa_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_ofisa_dma_abort(struct atppc_softc * lsc)
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{
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struct atppc_ofisa_softc * sc = (struct atppc_ofisa_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_ofisa_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_ofisa_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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void
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atppc_ofisa_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_ofisa_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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