145 lines
4.2 KiB
C
145 lines
4.2 KiB
C
/* $NetBSD: npx_isa.c,v 1.4 2002/01/07 21:47:01 thorpej Exp $ */
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/*-
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* Copyright (c) 1994, 1995, 1998 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1990 William Jolitz.
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* Copyright (c) 1991 The Regents of the University of California.
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* All rights reserved.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)npx.c 7.2 (Berkeley) 5/12/91
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: npx_isa.c,v 1.4 2002/01/07 21:47:01 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 <machine/bus.h>
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#include <machine/cpufunc.h>
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#include <machine/intr.h>
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#include <machine/specialreg.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <i386/isa/npxvar.h>
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int npx_isa_probe(struct device *, struct cfdata *, void *);
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void npx_isa_attach(struct device *, struct device *, void *);
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struct cfattach npx_isa_ca = {
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sizeof(struct npx_softc), npx_isa_probe, npx_isa_attach
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};
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int
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npx_isa_probe(struct device *parent, struct cfdata *match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_handle_t ioh;
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enum npx_type result;
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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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if (bus_space_map(ia->ia_iot, 0xf0, 16, 0, &ioh) != 0)
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return (0);
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result = npxprobe1(ia->ia_iot, ioh, ia->ia_irq[0].ir_irq);
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bus_space_unmap(ia->ia_iot, ioh, 16);
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if (result != NPX_NONE) {
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/*
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* Remember our result -- we don't want to have to npxprobe1()
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* again (especially if we've zapped the IRQ).
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*/
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ia->ia_aux = (void *)(u_long)result;
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ia->ia_nio = 1;
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ia->ia_io[0].ir_addr = 0xf0;
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ia->ia_io[0].ir_size = 16;
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if (result != NPX_INTERRUPT)
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ia->ia_nirq = 0; /* zap the interrupt */
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else
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ia->ia_nirq = 1;
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ia->ia_niomem = 0;
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ia->ia_ndrq = 0;
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return (1);
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}
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return (0);
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}
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void
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npx_isa_attach(struct device *parent, struct device *self, void *aux)
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{
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struct npx_softc *sc = (void *)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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if (bus_space_map(sc->sc_iot, 0xf0, 16, 0, &sc->sc_ioh)) {
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printf("\n");
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panic("npxattach: unable to map I/O space");
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}
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sc->sc_type = (u_long) ia->ia_aux;
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switch (sc->sc_type) {
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case NPX_INTERRUPT:
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printf("\n");
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lcr0(rcr0() & ~CR0_NE);
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sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
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IST_EDGE, IPL_NONE, npxintr, 0);
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break;
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case NPX_EXCEPTION:
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printf(": using exception 16\n");
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break;
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case NPX_BROKEN:
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printf(": error reporting broken; not using\n");
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sc->sc_type = NPX_NONE;
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return;
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case NPX_NONE:
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return;
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}
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npxattach(sc);
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}
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