0fb6b9a8f8
Rather than an "iointr" routine that decomposes a vector into an IRQ, we maintain a vector table directly, hooking up each "iointr" routine at the correct vector. This also allows us to hook device interrupts up to specific vectors (c.f. Jensen). We can shave even more cycles off, here, and I will, but it requires some changes to the alpha_shared_intr stuff.
155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/* $NetBSD: com_jensenio.c,v 1.2 2001/07/27 00:25:19 thorpej Exp $ */
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/*-
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* Copyright (c) 1999 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 Jason R. Thorpe.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: com_jensenio.c,v 1.2 2001/07/27 00:25:19 thorpej Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/user.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/kernel.h>
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#include <sys/syslog.h>
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#include <sys/types.h>
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#include <sys/device.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/eisa/eisavar.h>
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#include <dev/isa/isavar.h>
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#include <alpha/jensenio/jenseniovar.h>
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struct com_jensenio_softc {
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struct com_softc sc_com; /* real "com" softc */
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/* Jensen-specific goo. */
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char sc_vecstr[8];
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struct evcnt sc_ev_intr;
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};
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int com_jensenio_match(struct device *, struct cfdata *, void *);
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void com_jensenio_attach(struct device *, struct device *, void *);
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void com_jensenio_cleanup(void *);
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struct cfattach com_jensenio_ca = {
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sizeof(struct com_jensenio_softc), com_jensenio_match,
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com_jensenio_attach
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};
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void com_jensenio_intr(void *, u_long);
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int
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com_jensenio_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct jensenio_attach_args *ja = aux;
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/* Always present. */
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if (strcmp(ja->ja_name, match->cf_driver->cd_name) == 0)
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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_jensenio_attach(struct device *parent, struct device *self, void *aux)
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{
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struct com_jensenio_softc *jsc = (void *)self;
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struct com_softc *sc = &jsc->sc_com;
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struct jensenio_attach_args *ja = aux;
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sc->sc_iot = ja->ja_iot;
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sc->sc_iobase = ja->ja_ioaddr;
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if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
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bus_space_map(sc->sc_iot, sc->sc_iobase, COM_NPORTS, 0,
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&sc->sc_ioh) != 0) {
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printf(": can't map i/o space\n");
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return;
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}
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sc->sc_frequency = COM_FREQ;
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com_attach_subr(sc);
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scb_set(ja->ja_irq[0], com_jensenio_intr, sc);
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printf("%s: interrupting at vector 0x%x\n",
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sc->sc_dev.dv_xname, ja->ja_irq[0]);
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sprintf(jsc->sc_vecstr, "0x%x", ja->ja_irq[0]);
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evcnt_attach_dynamic(&jsc->sc_ev_intr, EVCNT_TYPE_INTR,
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NULL, "vector", jsc->sc_vecstr);
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/*
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* Shutdown hook for buggy BIOSs that don't recognize the UART
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* without a disabled FIFO.
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*/
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if (shutdownhook_establish(com_jensenio_cleanup, sc) == NULL)
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panic("com_jensenio_attach: could not establish shutdown hook");
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}
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void
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com_jensenio_intr(void *arg, u_long vec)
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{
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struct com_jensenio_softc *jsc = arg;
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jsc->sc_ev_intr.ev_count++;
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(void) comintr(&jsc->sc_com);
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}
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void
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com_jensenio_cleanup(void *arg)
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{
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struct com_softc *sc = arg;
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if (ISSET(sc->sc_hwflags, COM_HW_FIFO))
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bus_space_write_1(sc->sc_iot, sc->sc_ioh, com_fifo, 0);
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}
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