135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/* $NetBSD: com_iop.c,v 1.3 2008/04/28 20:23:34 martin Exp $ */
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/*-
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* Copyright (c) 2007 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 Tim Rightnour
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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: com_iop.c,v 1.3 2008/04/28 20:23:34 martin Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <machine/intr.h>
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#include <machine/bus.h>
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#include <dev/ic/comreg.h>
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#include <dev/ic/comvar.h>
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#include <dev/mca/mcavar.h>
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#include <dev/mca/mcadevs.h>
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#include <rs6000/ioplanar/ioplanarvar.h>
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struct com_iop_softc {
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struct com_softc sc_com; /* real com softc */
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void *sc_ih;
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};
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int com_iop_probe(device_t, cfdata_t , void *);
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void com_iop_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(com_iop, sizeof(struct com_iop_softc),
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com_iop_probe, com_iop_attach, NULL, NULL);
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#define COM_RAINBOW_FREQ 8000000
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/*
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* This probe is very unorthodox. Basically, we have no way to actually
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* probe the device, so instead, we check that the specific device should
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* exist on the ioplanar, and just return true.
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*/
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int
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com_iop_probe(device_t parent, cfdata_t match, void *aux)
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{
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struct ioplanar_dev_attach_args *idaa = aux;
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if (idaa->idaa_devid == MCA_PRODUCT_IBM_SIO_RAINBOW &&
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(idaa->idaa_device == IOP_COM0 || idaa->idaa_device == IOP_COM1))
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return 1;
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return 0;
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}
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void
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com_iop_attach(device_t parent, device_t self, void *aux)
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{
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struct com_iop_softc *isc = device_private(self);
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struct com_softc *sc = &isc->sc_com;
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int iobase, irq;
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struct ioplanar_dev_attach_args *idaa = aux;
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bus_space_handle_t ioh;
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sc->sc_dev = self;
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switch (idaa->idaa_devid) {
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case MCA_PRODUCT_IBM_SIO_RAINBOW:
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switch (idaa->idaa_device) {
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case IOP_COM0:
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iobase = 0x30;
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irq = 2; /* ??? */
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sc->sc_frequency = COM_RAINBOW_FREQ;
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break;
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case IOP_COM1:
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iobase = 0x38;
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irq = 2; /* ??? */
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sc->sc_frequency = COM_RAINBOW_FREQ;
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break;
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default:
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return;
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}
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break;
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default:
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return;
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}
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if (!com_is_console(idaa->idaa_iot, iobase, &ioh) &&
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bus_space_map(idaa->idaa_iot, iobase, COM_NPORTS, 0, &ioh)) {
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aprint_error(": can't map i/o space\n");
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return;
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}
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COM_INIT_REGS(sc->sc_regs, idaa->idaa_iot, ioh, iobase);
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aprint_normal("i/o %#x-%#x irq %d", iobase, iobase + COM_NPORTS - 1,
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irq);
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com_attach_subr(sc);
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isc->sc_ih = mca_intr_establish(idaa->idaa_mc, irq, IPL_SERIAL,
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comintr, sc);
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if (isc->sc_ih == NULL) {
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aprint_error_dev(self,
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"couldn't establish interrupt handler\n");
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return;
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}
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}
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