150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/* $NetBSD: tsdio.c,v 1.13 2021/08/07 16:19:12 thorpej Exp $ */
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/*-
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* Copyright (c) 2005 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 Jesse Off
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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: tsdio.c,v 1.13 2021/08/07 16:19:12 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/isa/isareg.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/isa/tsdiovar.h>
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int tsdio_probe(device_t, cfdata_t, void *);
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void tsdio_attach(device_t, device_t, void *);
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int tsdio_search(device_t, cfdata_t, const int *, void *);
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int tsdio_print(void *, const char *);
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CFATTACH_DECL_NEW(tsdio, sizeof(struct tsdio_softc),
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tsdio_probe, tsdio_attach, NULL, NULL);
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int
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tsdio_probe(device_t parent, cfdata_t cf, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t dioh;
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int rv = 0, have_io = 0;
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if (ia->ia_nio < 1)
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return (0);
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if (ia->ia_nirq < 1)
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return (0);
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if (ISA_DIRECT_CONFIG(ia))
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return (0);
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/*
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* Disallow wildcarded I/O base.
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*/
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return (0);
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/*
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* Map the I/O space.
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*/
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if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, 8,
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0, &dioh))
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goto out;
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have_io = 1;
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if (bus_space_read_1(ia->ia_iot, dioh, 0) != 0x54) {
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goto out;
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}
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rv = 1;
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = 8;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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out:
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if (have_io)
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bus_space_unmap(iot, dioh, 8);
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return (rv);
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}
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void
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tsdio_attach(device_t parent, device_t self, void *aux)
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{
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struct tsdio_softc *sc = device_private(self);
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struct isa_attach_args *ia = aux;
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sc->sc_iot = ia->ia_iot;
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aprint_normal(": Technologic Systems TS-DIO24\n");
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/*
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* Map the device.
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*/
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if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, 8,
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0, &sc->sc_ioh)) {
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aprint_error_dev(self, "unable to map i/o space\n");
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return;
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}
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/*
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* Attach sub-devices
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*/
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config_search(self, NULL,
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CFARGS(.search = tsdio_search));
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}
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int
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tsdio_search(device_t parent, cfdata_t cf, const int *l, void *aux)
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{
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struct tsdio_softc *sc = device_private(parent);
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struct tsdio_attach_args sa;
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sa.ta_iot = sc->sc_iot;
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sa.ta_ioh = sc->sc_ioh;
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if (config_probe(parent, cf, &sa))
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config_attach(parent, cf, &sa, tsdio_print, CFARGS_NONE);
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return (0);
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}
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int
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tsdio_print(void *aux, const char *name)
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{
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return (UNCONF);
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}
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