250 lines
6.7 KiB
C
250 lines
6.7 KiB
C
/* $NetBSD: isa_machdep.c,v 1.1.1.1 1999/09/16 12:23:24 takemura Exp $ */
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/*
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* Copyright (c) 1999, by UCHIYAMA Yasushi
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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. The name of the developer may NOT be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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*/
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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 <dev/isa/isavar.h>
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#include <dev/isa/isareg.h>
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#include <machine/platid.h>
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#include <machine/platid_mask.h>
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#include <hpcmips/vr/vripreg.h>
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#include <hpcmips/vr/vripvar.h>
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#include <hpcmips/vr/vrgiureg.h>
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#include "locators.h"
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int vrisabprint __P((void*, const char*));
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int vrisabmatch __P((struct device*, struct cfdata*, void*));
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void vrisabattach __P((struct device*, struct device*, void*));
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struct vrisab_softc {
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struct device sc_dev;
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vrgiu_chipset_tag_t sc_gc;
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vrgiu_function_tag_t sc_gf;
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int sc_intr_map[MAX_GPIO_INOUT]; /* ISA <-> GIU inerrupt line mapping */
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};
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struct cfattach vrisab_ca = {
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sizeof(struct vrisab_softc), vrisabmatch, vrisabattach
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};
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#ifdef DEBUG_FIND_PCIC
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#include <mips/cpuregs.h>
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#warning DEBUG_FIND_PCIC
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static void __find_pcic __P((void));
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#endif
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int
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vrisabmatch(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct gpbus_attach_args *gpa = aux;
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platid_mask_t mask;
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if (strcmp(gpa->gpa_busname, match->cf_driver->cd_name))
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return 0;
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if (match->cf_loc[VRISABIFCF_PLATFORM] == VRISABIFCF_PLATFORM_DEFAULT)
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return 1;
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mask = PLATID_DEREF(match->cf_loc[VRISABIFCF_PLATFORM]);
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if (platid_match(&platid, &mask))
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return 2;
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return 0;
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}
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void
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vrisabattach(parent, self, aux)
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struct device *parent;
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struct device *self;
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void *aux;
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{
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struct gpbus_attach_args *gpa = aux;
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struct vrgiu_softc *chipset;
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struct vrisab_softc *sc = (void*)self;
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struct isabus_attach_args iba;
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bus_addr_t offset;
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int i;
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sc->sc_gc = chipset = gpa->gpa_gc;
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sc->sc_gf = gpa->gpa_gf;
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iba.iba_busname = "isa";
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iba.iba_ic = sc;
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iba.iba_dmat = 0; /* XXX not yet */
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/* Allocate ISA memory space */
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iba.iba_memt = hpcmips_alloc_bus_space_tag();
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strcpy(iba.iba_memt->t_name, "ISA mem");
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offset = sc->sc_dev.dv_cfdata->cf_loc[VRISABIFCF_ISAMEMOFFSET];
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iba.iba_memt->t_base = VR_ISA_MEM_BASE + offset;
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iba.iba_memt->t_size = VR_ISA_MEM_SIZE - offset;
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hpcmips_init_bus_space_extent(iba.iba_memt);
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/* Allocate ISA port space */
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iba.iba_iot = hpcmips_alloc_bus_space_tag();
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strcpy(iba.iba_iot->t_name, "ISA port");
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/* Platform dependent setting. */
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offset = sc->sc_dev.dv_cfdata->cf_loc[VRISABIFCF_ISAPORTOFFSET];
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iba.iba_iot->t_base = VR_ISA_PORT_BASE + offset;
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iba.iba_iot->t_size = VR_ISA_PORT_SIZE - offset;
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hpcmips_init_bus_space_extent(iba.iba_iot);
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#ifdef DEBUG_FIND_PCIC
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#warning DEBUG_FIND_PCIC
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__find_pcic();
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#else
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/* Initialize ISA IRQ <-> GPIO mapping */
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for (i = 0; i < MAX_GPIO_INOUT; i++)
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sc->sc_intr_map[i] = -1;
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printf (":ISA port %#x-%#x mem %#x-%#x\n",
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iba.iba_iot->t_base, iba.iba_iot->t_base + iba.iba_iot->t_size,
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iba.iba_memt->t_base, iba.iba_memt->t_base + iba.iba_memt->t_base);
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config_found(self, &iba, vrisabprint);
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#endif
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}
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int
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vrisabprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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if (pnp)
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return (QUIET);
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return (UNCONF);
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}
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void
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isa_attach_hook(parent, self, iba)
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struct device *parent, *self;
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struct isabus_attach_args *iba;
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{
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}
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void *
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isa_intr_establish(ic, port_irq, type, level, ih_fun, ih_arg)
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isa_chipset_tag_t ic;
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int port_irq; /* (GPIO<<16)|(ISA IRQ) */
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int type; /* XXX not yet */
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int level; /* XXX not yet */
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int (*ih_fun) __P((void*));
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void *ih_arg;
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{
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struct vrisab_softc *sc = (void*)ic;
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int port, irq, mode;
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#define GET_PORT(i) (((i)>>16)&0x1f)
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#define GET_IRQ(i) ((i)&0xf)
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/*
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* ISA IRQ <-> GPIO port mapping
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*/
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irq = GET_IRQ(port_irq);
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if (!(port = GET_PORT(port_irq))) {/* GPIO port not specfied */
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port = sc->sc_intr_map[irq]; /* Use Already mapped port */
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} else { /* GPIO port specified. */
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if (sc->sc_intr_map[irq] != -1)
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panic("isa_intr_establish: conflict GPIO line. %d <-> %d",
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port, sc->sc_intr_map[irq]);
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sc->sc_intr_map[irq] = port; /* Register it */
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printf("ISA IRQ %d -> GPIO port %d\n", irq, port);
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}
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if (!port)
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panic("isa_intr_establish: can't ISA IRQ to GIU port.");
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/* Call Vr routine */
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mode = VRGIU_INTR_LEVEL_HIGH_THROUGH; /* XXX Is this OK? */
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return sc->sc_gf->gf_intr_establish(sc->sc_gc, port, mode, level, ih_fun, ih_arg);
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}
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void
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isa_intr_disestablish(ic, arg)
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isa_chipset_tag_t ic;
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void *arg;
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{
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struct vrisab_softc *sc = (void*)ic;
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/* Call Vr routine */
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sc->sc_gf->gf_intr_disestablish(sc->sc_gc, arg);
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}
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int
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isa_intr_alloc(ic, mask, type, irq)
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isa_chipset_tag_t ic;
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int mask;
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int type;
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int *irq;
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{
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/* XXX not coded yet. this is temporary XXX */
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printf ("isa_intr_alloc:");
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bitdisp32(mask);
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*irq = (ffs(mask) -1);/* XXX */
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return 0;
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}
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#ifdef DEBUG_FIND_PCIC
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#warning DEBUG_FIND_PCIC
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static void
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__find_pcic(void)
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{
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int i, j, step, found;
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u_int32_t addr;
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u_int8_t reg;
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int __read_revid (u_int32_t port)
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{
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addr = MIPS_PHYS_TO_KSEG1(i + port);
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printf("%#x\r", i);
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for (found = 0, j = 0; j < 0x100; j += 0x40) {
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*((volatile u_int8_t*)addr) = j;
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reg = *((volatile u_int8_t*)(addr + 1));
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#ifdef DEBUG_FIND_PCIC_I82365SL_ONLY
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if (reg == 0x82 || reg == 0x83) {
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#else
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if ((reg & 0xc0) == 0x80) {
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#endif
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found++;
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}
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}
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if (found)
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printf("\nfound %d socket at %#x (base from %#x)\n", found, addr,
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i + port - VR_ISA_PORT_BASE);
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};
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step = 0x1000000;
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printf("\nFinding PCIC. Trying ISA port %#x-%#x step %#x\n",
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VR_ISA_PORT_BASE, VR_ISA_PORT_BASE + VR_ISA_PORT_SIZE, step);
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for (i = VR_ISA_PORT_BASE; i < VR_ISA_PORT_BASE+VR_ISA_PORT_SIZE; i+= step) {
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__read_revid (0x3e0);
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__read_revid (0x3e2);
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}
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}
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#endif
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