b57caf8fee
audio or DSP), but is able to disable interrupts which is important if booting NetBSD from AmigaOS to avoid unhandled interrupts.
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/* $NetBSD: flipper.c,v 1.1 2012/11/08 18:30:21 rkujawa Exp $ */
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/*-
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* Copyright (c) 2012 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 Radoslaw Kujawa.
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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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/* Driver for Individual Computers Delfina Flipper / Petsoff Delfina 1200.
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*
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* TODO:
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* - linux-style /dev/dsp56k interface
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* - audio
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* - firmware
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* - interrupts: caa->cp_intr_establish(dspintr, sc);
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <amiga/clockport/clockportvar.h>
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#include <amiga/clockport/flipperreg.h>
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#include <amiga/clockport/flippervar.h>
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#define FLIPPER_DEBUG 1
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static int flipper_probe(device_t, cfdata_t , void *);
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static void flipper_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(flipper, sizeof(struct flipper_softc),
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flipper_probe, flipper_attach, NULL, NULL);
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static int
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flipper_probe(device_t parent, cfdata_t cf, void *aux)
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{
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struct clockport_attach_args *caa = aux;
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uint8_t delfinaver;
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bus_space_handle_t ioh;
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bus_space_map(caa->cp_iot, 0, FLIPPER_REGSIZE, 0, &ioh);
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delfinaver = bus_space_read_1(caa->cp_iot, ioh, FLIPPER_HOSTCTL);
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#ifdef FLIPPER_DEBUG
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aprint_normal("flipper: hostctl probe read %x\n", delfinaver);
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#endif /* FLIPPER_DEBUG */
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bus_space_unmap(caa->cp_iot, ioh, FLIPPER_REGSIZE);
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if ((delfinaver == 0xB5) || (delfinaver == 0xB6))
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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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flipper_attach(device_t parent, device_t self, void *aux)
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{
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struct flipper_softc *sc = device_private(self);
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struct clockport_attach_args *caa = aux;
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sc->sc_dev = self;
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sc->sc_iot = caa->cp_iot;
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if (bus_space_map(sc->sc_iot, 0, FLIPPER_REGSIZE, 0, &sc->sc_ioh)) {
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aprint_normal("can't map the bus space\n");
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return;
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}
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sc->sc_delfinaver = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
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FLIPPER_HOSTCTL);
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switch (sc->sc_delfinaver) {
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case DELFINA_FLIPPER:
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aprint_normal(": Individual Computers Delfina Flipper\n");
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break;
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case DELFINA_1200:
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aprint_normal(": Petsoff Delfina 1200\n");
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break;
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default:
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aprint_normal(": unknown model\n");
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return;
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}
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/* reset the board */
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
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FLIPPER_HOSTCTL_RESET | FLIPPER_HOSTCTL_IRQDIS);
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delay(10000);
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, FLIPPER_HOSTCTL,
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FLIPPER_HOSTCTL_IRQDIS); /* leave interrupts disabled for now */
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/* attach dsp56k, audio, etc. */
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}
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