166 lines
4.8 KiB
C
166 lines
4.8 KiB
C
/* $NetBSD: com_ofisa.c,v 1.9 2005/12/11 12:22:48 christos Exp $ */
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/*
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* Copyright 1997, 1998
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* Digital Equipment Corporation. All rights reserved.
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*
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* This software is furnished under license and may be used and
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* copied only in accordance with the following terms and conditions.
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* Subject to these conditions, you may download, copy, install,
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* use, modify and distribute this software in source and/or binary
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* form. No title or ownership is transferred hereby.
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*
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* 1) Any source code used, modified or distributed must reproduce
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* and retain this copyright notice and list of conditions as
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* they appear in the source file.
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*
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* 2) No right is granted to use any trade name, trademark, or logo of
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* Digital Equipment Corporation. Neither the "Digital Equipment
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* Corporation" name nor any trademark or logo of Digital Equipment
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* Corporation may be used to endorse or promote products derived
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* from this software without the prior written permission of
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* Digital Equipment Corporation.
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*
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* 3) This software is provided "AS-IS" and any express or implied
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* warranties, including but not limited to, any implied warranties
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* of merchantability, fitness for a particular purpose, or
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* non-infringement are disclaimed. In no event shall DIGITAL be
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* liable for any damages whatsoever, and in particular, DIGITAL
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* shall not be liable for special, indirect, consequential, or
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* incidental damages or damages for lost profits, loss of
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* revenue or loss of use, whether such damages arise in contract,
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* negligence, tort, under statute, in equity, at law or otherwise,
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* even if advised of the possibility of such damage.
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*/
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/*
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* OFW Attachment for 'com' serial driver
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: com_ofisa.c,v 1.9 2005/12/11 12:22:48 christos Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/systm.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/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/comreg.h>
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#include <dev/ic/comvar.h>
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struct com_ofisa_softc {
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struct com_softc sc_com; /* real "com" softc */
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/* OFW ISA-specific goo. */
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void *sc_ih; /* interrupt handler */
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};
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int com_ofisa_probe(struct device *, struct cfdata *, void *);
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void com_ofisa_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(com_ofisa, sizeof(struct com_ofisa_softc),
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com_ofisa_probe, com_ofisa_attach, NULL, NULL);
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int
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com_ofisa_probe(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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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,501", 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 _COM_OFISA_MD_MATCH
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if (!rv)
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rv = com_ofisa_md_match(parent, cf, aux);
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#endif
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return (rv);
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}
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void
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com_ofisa_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct com_ofisa_softc *osc = (void *)self;
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struct com_softc *sc = &osc->sc_com;
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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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int freq;
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char freqbuf[4];
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int n;
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/*
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* We're living on an ofw. We have to ask the OFW what our
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* registers and interrupts properties look like.
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*
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* We expect exactly one register region and one interrupt.
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*/
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n = ofisa_reg_get(aa->oba.oba_phandle, ®, 1);
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#ifdef _COM_OFISA_MD_REG_FIXUP
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n = com_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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printf(": error getting register data\n");
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return;
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}
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if (reg.len != 8) {
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printf(": weird register size (%lu, expected 8)\n",
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(unsigned long)reg.len);
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return;
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}
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n = ofisa_intr_get(aa->oba.oba_phandle, &intr, 1);
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#ifdef _COM_OFISA_MD_INTR_FIXUP
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n = com_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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printf(": error getting interrupt data\n");
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return;
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}
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if (OF_getproplen(aa->oba.oba_phandle, "clock-frequency") != 4 ||
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OF_getprop(aa->oba.oba_phandle, "clock-frequency", freqbuf,
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sizeof freqbuf) != 4)
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freq = COM_FREQ;
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else
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freq = of_decode_int(&freqbuf[0]);
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sc->sc_iot = (reg.type == OFISA_REG_TYPE_IO) ? aa->iot : aa->memt;
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sc->sc_iobase = reg.addr;
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sc->sc_frequency = freq;
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if (!com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) &&
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bus_space_map(sc->sc_iot, sc->sc_iobase, reg.len, 0,
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&sc->sc_ioh)) {
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printf(": can't map register space\n");
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return;
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}
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osc->sc_ih = isa_intr_establish(aa->ic, intr.irq, intr.share,
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IPL_SERIAL, comintr, sc);
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com_attach_subr(sc);
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#if 0
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printf("%s: registers: ", sc->sc_dev.dv_xname);
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ofisa_reg_print(®, 1);
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printf("\n");
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printf("%s: interrupts: ", sc->sc_dev.dv_xname);
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ofisa_intr_print(&intr, 1);
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printf("\n");
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#endif
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}
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