134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
/* $NetBSD: atppc_pioc.c,v 1.6 2011/07/19 15:59:53 dyoung Exp $ */
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/*-
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* Copyright (c) 2001 Alcove - Nicolas Souchu
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* All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* FreeBSD: src/sys/isa/ppc.c,v 1.26.2.5 2001/10/02 05:21:45 nsouch Exp
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*
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*/
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#include "opt_atppc.h"
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#include <sys/param.h>
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__KERNEL_RCSID(0, "$NetBSD: atppc_pioc.c,v 1.6 2011/07/19 15:59:53 dyoung Exp $");
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <machine/intr.h>
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#include <arch/acorn32/mainbus/piocvar.h>
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#include <dev/ic/atppcreg.h>
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#include <dev/ic/atppcvar.h>
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#include "locators.h"
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/* Probe and attach functions for a atppc device on the PIOC. */
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static int atppc_pioc_probe(device_t, cfdata_t, void *);
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static void atppc_pioc_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(atppc_pioc, sizeof(struct atppc_softc), atppc_pioc_probe,
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atppc_pioc_attach, NULL, NULL);
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#define IO_LPTSIZE 8
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/*
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* Probe function: find parallel port controller on isa bus. Combined from
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* lpt_isa_probe() in lpt.c and atppc_detect_port() from FreeBSD's ppc.c.
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*/
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static int
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atppc_pioc_probe(device_t parent, cfdata_t cf, void *aux)
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{
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bus_space_handle_t ioh;
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struct pioc_attach_args *pa = aux;
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bus_space_tag_t iot = pa->pa_iot;
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int addr = pa->pa_iobase + pa->pa_offset;
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int rval = 0;
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if (pa->pa_name && strcmp(pa->pa_name, "lpt") != 0)
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return 0;
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if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT) {
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aprint_error_dev(parent, "(%s): io port unknown.\n", __func__);
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} else if (bus_space_map(iot, addr, IO_LPTSIZE, 0, &ioh) == 0) {
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if (atppc_detect_port(iot, ioh) == 0)
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rval = 1;
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else
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aprint_error_dev(parent,
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"(%s): unable to write/read I/O port.\n",
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__func__);
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bus_space_unmap(iot, ioh, IO_LPTSIZE);
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} else {
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aprint_error_dev(parent, "(%s): attempt to map bus space failed.\n",
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__func__);
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}
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return rval;
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}
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/* Attach function: attach and configure parallel port controller on isa bus. */
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static void
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atppc_pioc_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 pioc_attach_args *pa = aux;
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bus_addr_t iobase;
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sc->sc_dev = self;
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sc->sc_iot = pa->pa_iot;
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sc->sc_has = 0;
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iobase = pa->pa_iobase + pa->pa_offset;
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if (bus_space_map(sc->sc_iot, iobase, IO_LPTSIZE, 0,
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&sc->sc_ioh) != 0) {
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aprint_error(": attempt to map bus space failed, device not "
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"properly attached.\n");
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sc->sc_dev_ok = ATPPC_NOATTACH;
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return;
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}
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sc->sc_dev_ok = ATPPC_ATTACHED;
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/* Assign interrupt handler */
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if (!(device_cfdata(self)->cf_flags & ATPPC_FLAG_DISABLE_INTR)) {
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if (pa->pa_irq != MAINBUSCF_IRQ_DEFAULT) {
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/* Establish interrupt handler. */
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sc->sc_ieh = intr_claim(pa->pa_irq, IPL_TTY, "atppc",
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atppcintr, sc);
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sc->sc_has |= ATPPC_HAS_INTR;
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} else
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ATPPC_DPRINTF(("%s: IRQ not assigned or bad number of "
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"IRQs.\n", device_xname(self)));
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} else
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ATPPC_VPRINTF(("%s: interrupts not configured due to flags.\n",
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device_xname(self)));
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/* Run soft configuration attach */
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atppc_sc_attach(sc);
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}
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