Annotation of sys/arch/mvme88k/dev/vmel.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: vmel.c,v 1.16 2005/11/25 22:14:32 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1995 Theo de Raadt
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 18: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 19: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 20: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 21: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 22: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 23: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 24: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 25: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 26: */
! 27:
! 28: #include <sys/param.h>
! 29: #include <sys/proc.h>
! 30: #include <sys/user.h>
! 31: #include <sys/systm.h>
! 32: #include <sys/kernel.h>
! 33: #include <sys/device.h>
! 34:
! 35: #include <machine/autoconf.h>
! 36: #include <machine/conf.h>
! 37: #include <machine/cpu.h>
! 38:
! 39: #include <mvme88k/dev/vme.h>
! 40:
! 41: /*
! 42: * The VMEL driver deals with D32 transfers on the VME bus. The number
! 43: * of address bits (A16, A24, A32) is irrelevant since the mapping
! 44: * functions will decide how many address bits are relevant.
! 45: */
! 46:
! 47: void vmelattach(struct device *, struct device *, void *);
! 48: int vmelmatch(struct device *, void *, void *);
! 49: int vmelscan(struct device *, void *, void *);
! 50:
! 51: struct cfattach vmel_ca = {
! 52: sizeof(struct device), vmelmatch, vmelattach
! 53: };
! 54:
! 55: struct cfdriver vmel_cd = {
! 56: NULL, "vmel", DV_DULL
! 57: };
! 58:
! 59: int
! 60: vmelmatch(parent, cf, args)
! 61: struct device *parent;
! 62: void *cf, *args;
! 63: {
! 64: return (1);
! 65: }
! 66:
! 67: int
! 68: vmelscan(parent, child, args)
! 69: struct device *parent;
! 70: void *child, *args;
! 71: {
! 72: return (vmescan(parent, child, args, BUS_VMEL));
! 73: }
! 74:
! 75: void
! 76: vmelattach(parent, self, args)
! 77: struct device *parent, *self;
! 78: void *args;
! 79: {
! 80: printf("\n");
! 81:
! 82: config_search(vmelscan, self, args);
! 83: }
! 84:
! 85: /*ARGSUSED*/
! 86: int
! 87: vmelopen(dev, flag, mode, p)
! 88: dev_t dev;
! 89: int flag, mode;
! 90: struct proc *p;
! 91: {
! 92: if (minor(dev) >= vmel_cd.cd_ndevs ||
! 93: vmel_cd.cd_devs[minor(dev)] == NULL)
! 94: return (ENODEV);
! 95: return (0);
! 96: }
! 97:
! 98: /*ARGSUSED*/
! 99: int
! 100: vmelclose(dev, flag, mode, p)
! 101: dev_t dev;
! 102: int flag, mode;
! 103: struct proc *p;
! 104: {
! 105:
! 106: return (0);
! 107: }
! 108:
! 109: /*ARGSUSED*/
! 110: int
! 111: vmelioctl(dev, cmd, data, flag, p)
! 112: dev_t dev;
! 113: u_long cmd;
! 114: caddr_t data;
! 115: int flag;
! 116: struct proc *p;
! 117: {
! 118: int error = 0;
! 119:
! 120: switch (cmd) {
! 121: default:
! 122: error = ENOTTY;
! 123: break;
! 124: }
! 125: return (error);
! 126: }
! 127:
! 128: int
! 129: vmelread(dev, uio, flags)
! 130: dev_t dev;
! 131: struct uio *uio;
! 132: int flags;
! 133: {
! 134: int unit = minor(dev);
! 135: struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
! 136:
! 137: return (vmerw(sc->dv_parent, uio, flags, BUS_VMEL));
! 138: }
! 139:
! 140: int
! 141: vmelwrite(dev, uio, flags)
! 142: dev_t dev;
! 143: struct uio *uio;
! 144: int flags;
! 145: {
! 146: int unit = minor(dev);
! 147: struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
! 148:
! 149: return (vmerw(sc->dv_parent, uio, flags, BUS_VMEL));
! 150: }
! 151:
! 152: paddr_t
! 153: vmelmmap(dev, off, prot)
! 154: dev_t dev;
! 155: off_t off;
! 156: int prot;
! 157: {
! 158: int unit = minor(dev);
! 159: struct device *sc = (struct device *)vmel_cd.cd_devs[unit];
! 160: paddr_t pa;
! 161:
! 162: pa = vmepmap(sc->dv_parent, off, BUS_VMEL);
! 163: #ifdef DEBUG
! 164: printf("vmel %llx pa %p\n", off, pa);
! 165: #endif
! 166: if (pa == NULL)
! 167: return (-1);
! 168: return (atop(pa));
! 169: }
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