Annotation of sys/arch/mvme88k/dev/pcctwo.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pcctwo.c,v 1.29 2006/05/08 14:36:10 miod Exp $ */
! 2: /*
! 3: * Copyright (c) 1995 Theo de Raadt
! 4: * All rights reserved.
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 17: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 18: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 19: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 20: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 21: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 22: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 23: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 24: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 25: */
! 26:
! 27: /*
! 28: * VME1x7 PCC2 chip
! 29: */
! 30: #include <sys/param.h>
! 31: #include <sys/conf.h>
! 32: #include <sys/ioctl.h>
! 33: #include <sys/proc.h>
! 34: #include <sys/user.h>
! 35: #include <sys/tty.h>
! 36: #include <sys/uio.h>
! 37: #include <sys/systm.h>
! 38: #include <sys/kernel.h>
! 39: #include <sys/syslog.h>
! 40: #include <sys/fcntl.h>
! 41: #include <sys/device.h>
! 42:
! 43: #include <machine/autoconf.h>
! 44: #include <machine/cpu.h>
! 45:
! 46: #include <dev/cons.h>
! 47:
! 48: #include <mvme88k/dev/pcctworeg.h>
! 49: #include <mvme88k/dev/pcctwovar.h>
! 50:
! 51: #include "bussw.h"
! 52:
! 53: void pcctwoattach(struct device *, struct device *, void *);
! 54: int pcctwomatch(struct device *, void *, void *);
! 55:
! 56: struct cfattach pcctwo_ca = {
! 57: sizeof(struct pcctwosoftc), pcctwomatch, pcctwoattach
! 58: };
! 59:
! 60: struct cfdriver pcctwo_cd = {
! 61: NULL, "pcctwo", DV_DULL
! 62: };
! 63:
! 64: int pcctwo_print(void *args, const char *bus);
! 65: int pcctwo_scan(struct device *parent, void *child, void *args);
! 66:
! 67: int
! 68: pcctwomatch(parent, vcf, args)
! 69: struct device *parent;
! 70: void *vcf, *args;
! 71: {
! 72: struct confargs *ca = args;
! 73: bus_space_handle_t ioh;
! 74: int rc;
! 75: u_int8_t chipid;
! 76:
! 77: /* Bomb if wrong cpu */
! 78: switch (brdtyp) {
! 79: case BRD_187:
! 80: case BRD_8120:
! 81: case BRD_197:
! 82: break;
! 83: default:
! 84: return 0;
! 85: }
! 86:
! 87: if (bus_space_map(ca->ca_iot, PCC2_BASE, PCC2_SIZE,
! 88: 0, &ioh) != 0)
! 89: return 0;
! 90: rc = badaddr((vaddr_t)bus_space_vaddr(ca->ca_iot, ioh), 4);
! 91: if (rc == 0) {
! 92: chipid = bus_space_read_1(ca->ca_iot, ioh, PCCTWO_CHIPID);
! 93: if (chipid != PCC2_ID) {
! 94: #ifdef DEBUG
! 95: printf("==> pcctwo: wrong chip id %x.\n", chipid);
! 96: rc = -1;
! 97: #endif
! 98: }
! 99: }
! 100: bus_space_unmap(ca->ca_iot, ioh, PCC2_SIZE);
! 101:
! 102: return rc == 0;
! 103: }
! 104:
! 105: void
! 106: pcctwoattach(parent, self, args)
! 107: struct device *parent, *self;
! 108: void *args;
! 109: {
! 110: struct confargs *ca = args;
! 111: struct pcctwosoftc *sc = (struct pcctwosoftc *)self;
! 112: bus_space_handle_t ioh;
! 113: u_int8_t genctl;
! 114:
! 115: sc->sc_base = PCC2_BASE;
! 116:
! 117: if (bus_space_map(ca->ca_iot, sc->sc_base, PCC2_SIZE, 0, &ioh) != 0) {
! 118: printf(": can't map registers!\n");
! 119: return;
! 120: }
! 121:
! 122: sc->sc_iot = ca->ca_iot;
! 123: sc->sc_ioh = ioh;
! 124:
! 125: bus_space_write_1(sc->sc_iot, ioh, PCCTWO_VECBASE, PCC2_VECBASE);
! 126: genctl = bus_space_read_1(sc->sc_iot, ioh, PCCTWO_GENCTL);
! 127: #if NBUSSW > 0
! 128: if (ca->ca_bustype == BUS_BUSSWITCH) {
! 129: /* Make sure the bus is mc68040 compatible */
! 130: genctl |= PCC2_GENCTL_C040;
! 131: }
! 132: #endif
! 133: genctl |= PCC2_GENCTL_IEN; /* global irq enable */
! 134: bus_space_write_1(sc->sc_iot, ioh, PCCTWO_GENCTL, genctl);
! 135:
! 136: printf(": rev %d\n",
! 137: bus_space_read_1(sc->sc_iot, ioh, PCCTWO_CHIPREV));
! 138:
! 139: config_search(pcctwo_scan, self, args);
! 140: }
! 141:
! 142: int
! 143: pcctwo_print(args, bus)
! 144: void *args;
! 145: const char *bus;
! 146: {
! 147: struct confargs *ca = args;
! 148:
! 149: if (ca->ca_offset != -1)
! 150: printf(" offset 0x%x", ca->ca_offset);
! 151: if (ca->ca_ipl > 0)
! 152: printf(" ipl %d", ca->ca_ipl);
! 153: return (UNCONF);
! 154: }
! 155:
! 156: int
! 157: pcctwo_scan(parent, child, args)
! 158: struct device *parent;
! 159: void *child, *args;
! 160: {
! 161: struct cfdata *cf = child;
! 162: struct confargs oca, *ca = args;
! 163:
! 164: bzero(&oca, sizeof oca);
! 165: oca.ca_iot = ca->ca_iot;
! 166: oca.ca_dmat = ca->ca_dmat;
! 167: oca.ca_offset = cf->cf_loc[0];
! 168: oca.ca_ipl = cf->cf_loc[1];
! 169: if (oca.ca_offset != -1) {
! 170: /* offset locator for pcctwo children is relative to segment */
! 171: oca.ca_paddr = ca->ca_paddr + oca.ca_offset;
! 172: } else {
! 173: oca.ca_paddr = -1;
! 174: }
! 175: oca.ca_bustype = BUS_PCCTWO;
! 176: oca.ca_name = cf->cf_driver->cd_name;
! 177: if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
! 178: return (0);
! 179: config_attach(parent, cf, &oca, pcctwo_print);
! 180: return (1);
! 181: }
! 182:
! 183: /*
! 184: * PCC2 interrupts land in a PCC2_NVEC sized hole starting at PCC2_VECBASE
! 185: */
! 186: int
! 187: pcctwointr_establish(int vec, struct intrhand *ih, const char *name)
! 188: {
! 189: #ifdef DIAGNOSTIC
! 190: if (vec < 0 || vec >= PCC2_NVEC)
! 191: panic("pcctwo_establish: illegal vector 0x%x", vec);
! 192: #endif
! 193:
! 194: return intr_establish(PCC2_VECBASE + vec, ih, name);
! 195: }
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