ae4b76c8d3
in interrupt controllers in struct pic, and try to keep as much common code as possible. At the lowest (asm) level, this is done with CPP macros. The main structure is now struct intrsource, describing an established interrupt line, of any kind (soft/hard local apic/legacy apic/IO apic). For quick masking, there may be a maximum of 32 sources per CPU. Sources can be assigned to any CPU in the MP case, though currently they all go to the boot CPU.
144 lines
4.2 KiB
C
144 lines
4.2 KiB
C
/* $NetBSD: npx_isa.c,v 1.8 2002/11/22 15:23:50 fvdl 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 1.8 2002/11/22 15:23:50 fvdl 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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CFATTACH_DECL(npx_isa, sizeof(struct npx_softc),
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npx_isa_probe, npx_isa_attach, NULL, NULL);
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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, (int (*)(void *))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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