Annotation of sys/arch/aviion/dev/syscon.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: syscon.c,v 1.3 2006/11/16 23:21:56 miod Exp $ */
! 2: /*
! 3: * Copyright (c) 1999 Steve Murphree, Jr.
! 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: #include <sys/param.h>
! 28: #include <sys/conf.h>
! 29: #include <sys/systm.h>
! 30: #include <sys/kernel.h>
! 31: #include <sys/device.h>
! 32:
! 33: #include <machine/autoconf.h>
! 34: #include <machine/cpu.h>
! 35:
! 36: #include <machine/avcommon.h>
! 37: #include <aviion/dev/sysconreg.h>
! 38:
! 39: struct sysconsoftc {
! 40: struct device sc_dev;
! 41:
! 42: struct intrhand sc_abih; /* `abort' switch */
! 43: struct intrhand sc_acih; /* `ac fail' */
! 44: struct intrhand sc_sfih; /* `sys fail' */
! 45: };
! 46:
! 47: void sysconattach(struct device *, struct device *, void *);
! 48: int sysconmatch(struct device *, void *, void *);
! 49:
! 50: int syscon_print(void *, const char *);
! 51: int syscon_scan(struct device *, void *, void *);
! 52: int sysconabort(void *);
! 53: int sysconacfail(void *);
! 54: int sysconsysfail(void *);
! 55: int sysconav400(void *);
! 56:
! 57: struct cfattach syscon_ca = {
! 58: sizeof(struct sysconsoftc), sysconmatch, sysconattach
! 59: };
! 60:
! 61: struct cfdriver syscon_cd = {
! 62: NULL, "syscon", DV_DULL
! 63: };
! 64:
! 65: int
! 66: sysconmatch(struct device *parent, void *cf, void *args)
! 67: {
! 68: return (syscon_cd.cd_ndevs == 0);
! 69: }
! 70:
! 71: void
! 72: sysconattach(struct device *parent, struct device *self, void *args)
! 73: {
! 74: struct sysconsoftc *sc = (struct sysconsoftc *)self;
! 75:
! 76: printf("\n");
! 77:
! 78: /*
! 79: * Clear SYSFAIL if lit.
! 80: */
! 81: *(volatile u_int32_t *)AV_UCSR |= UCSR_DRVSFBIT;
! 82:
! 83: /*
! 84: * pseudo driver, abort interrupt handler
! 85: */
! 86: sc->sc_abih.ih_fn = sysconabort;
! 87: sc->sc_abih.ih_arg = 0;
! 88: sc->sc_abih.ih_wantframe = 1;
! 89: sc->sc_abih.ih_ipl = IPL_ABORT;
! 90:
! 91: sc->sc_acih.ih_fn = sysconacfail;
! 92: sc->sc_acih.ih_arg = 0;
! 93: sc->sc_acih.ih_wantframe = 1;
! 94: sc->sc_acih.ih_ipl = IPL_ABORT;
! 95:
! 96: sc->sc_sfih.ih_fn = sysconsysfail;
! 97: sc->sc_sfih.ih_arg = 0;
! 98: sc->sc_sfih.ih_wantframe = 1;
! 99: sc->sc_sfih.ih_ipl = IPL_ABORT;
! 100:
! 101: sysconintr_establish(SYSCV_ABRT, &sc->sc_abih, "abort");
! 102: sysconintr_establish(SYSCV_ACF, &sc->sc_acih, "acfail");
! 103: sysconintr_establish(SYSCV_SYSF, &sc->sc_sfih, "sysfail");
! 104:
! 105: config_search(syscon_scan, self, args);
! 106: }
! 107:
! 108: int
! 109: syscon_scan(struct device *parent, void *child, void *args)
! 110: {
! 111: struct cfdata *cf = child;
! 112: struct confargs oca, *ca = args;
! 113:
! 114: bzero(&oca, sizeof oca);
! 115: oca.ca_iot = ca->ca_iot;
! 116: oca.ca_offset = (paddr_t)cf->cf_loc[0];
! 117: if (oca.ca_offset != (paddr_t)-1)
! 118: oca.ca_paddr = ca->ca_paddr + oca.ca_offset;
! 119: else
! 120: oca.ca_paddr = (paddr_t)-1;
! 121: oca.ca_ipl = (u_int)cf->cf_loc[1];
! 122:
! 123: if ((*cf->cf_attach->ca_match)(parent, cf, &oca) == 0)
! 124: return (0);
! 125:
! 126: config_attach(parent, cf, &oca, syscon_print);
! 127: return (1);
! 128: }
! 129:
! 130: int
! 131: syscon_print(void *args, const char *pnp)
! 132: {
! 133: struct confargs *ca = args;
! 134:
! 135: if (ca->ca_offset != (paddr_t)-1)
! 136: printf(" offset 0x%x", ca->ca_offset);
! 137: if (ca->ca_ipl != (u_int)-1)
! 138: printf(" ipl %u", ca->ca_ipl);
! 139: return (UNCONF);
! 140: }
! 141:
! 142: int
! 143: sysconintr_establish(u_int vec, struct intrhand *ih, const char *name)
! 144: {
! 145: #ifdef DIAGNOSTIC
! 146: if (vec < 0 || vec >= SYSCON_NVEC) {
! 147: printf("sysconintr_establish: illegal vector 0x%x\n", vec);
! 148: return (EINVAL);
! 149: }
! 150: #endif
! 151:
! 152: return (intr_establish(SYSCON_VECT + vec, ih, name));
! 153: }
! 154:
! 155: int
! 156: sysconabort(void *eframe)
! 157: {
! 158: *(volatile u_int32_t *)AV_CLRINT = ISTATE_ABORT;
! 159: nmihand(eframe);
! 160: return (1);
! 161: }
! 162:
! 163: int
! 164: sysconsysfail(void *eframe)
! 165: {
! 166: *(volatile u_int32_t *)AV_CLRINT = ISTATE_SYSFAIL;
! 167: printf("WARNING: SYSFAIL* ASSERTED\n");
! 168: return (1);
! 169: }
! 170:
! 171: int
! 172: sysconacfail(void *eframe)
! 173: {
! 174: *(volatile u_int32_t *)AV_CLRINT = ISTATE_ACFAIL;
! 175: printf("WARNING: ACFAIL* ASSERTED\n");
! 176: return (1);
! 177: }
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