1 /* $NetBSD: i82072.c,v 1.3 2000/12/03 04:51:05 matt Exp $ */ 2 /*- 3 * Copyright (c) 2000 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Wayne Knowles 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/mbuf.h> 41 #include <sys/syslog.h> 42 #include <sys/socket.h> 43 #include <sys/device.h> 44 #include <sys/conf.h> 45 46 #include <machine/cpu.h> 47 #include <machine/autoconf.h> 48 #include <machine/mainboard.h> 49 #include <machine/bus.h> 50 51 dev_type_open(fdopen); 52 dev_type_close(fdclose); 53 dev_type_ioctl(fdioctl); 54 dev_type_size(fdsize); 55 dev_type_dump(fddump); 56 dev_type_strategy(fdstrategy); 57 58 59 #define I82072_STATUS 0x000003 60 #define I82072_DATA 0x000007 61 #define I82072_TC 0x800003 62 63 struct fd_softc { 64 struct device dev; 65 struct evcnt fd_intrcnt; 66 bus_space_tag_t fd_bst; 67 bus_space_handle_t fd_bsh; 68 int unit; 69 }; 70 71 static int fd_match (struct device *, struct cfdata *, void *); 72 static void fd_attach (struct device *, struct device *, void *); 73 static void fd_reset (struct fd_softc *); 74 75 struct cfattach fd_ca = { 76 sizeof(struct fd_softc), fd_match, fd_attach 77 }; 78 79 static int fd_intr (void *); 80 81 int 82 fd_match(struct device *parent, struct cfdata *cf, void *aux) 83 { 84 return 1; 85 } 86 87 void 88 fd_attach(struct device *parent, struct device *self, void *aux) 89 { 90 struct fd_softc *sc = (void *)self; 91 struct confargs *ca = aux; 92 93 sc->fd_bst = ca->ca_bustag; 94 if (bus_space_map(ca->ca_bustag, ca->ca_addr, 95 0x1000000, 96 BUS_SPACE_MAP_LINEAR, 97 &sc->fd_bsh) != 0) { 98 printf("%s: cannot map registers\n", self->dv_xname); 99 return; 100 } 101 evcnt_attach_dynamic(&sc->fd_intrcnt, EVCNT_TYPE_INTR, NULL, 102 self->dv_xname, "intr"); 103 104 bus_intr_establish(sc->fd_bst, SYS_INTR_FDC, 0, 0, fd_intr, sc); 105 106 fd_reset(sc); 107 printf(": not fully implemented\n"); 108 } 109 110 void 111 fd_reset(struct fd_softc *sc) 112 { 113 /* This clears any pending interrupts from the i82072 FDC */ 114 bus_space_write_1(sc->fd_bst, sc->fd_bsh, I82072_STATUS, 0x80); 115 DELAY(1000); 116 bus_space_write_1(sc->fd_bst, sc->fd_bsh, I82072_TC, 0x01); 117 DELAY(1000); 118 } 119 120 int 121 fdopen(dev_t dev, int flags, int mode, struct proc *p) 122 { 123 return (EBADF); 124 } 125 126 int 127 fdclose(dev_t dev, int flags, int mode, struct proc *p) 128 { 129 return 0; 130 } 131 132 void 133 fdstrategy(struct buf *bp) 134 { 135 panic("fdstrategy"); 136 } 137 138 int 139 fdioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 140 { 141 return (EINVAL); 142 } 143 144 int 145 fddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 146 { 147 return (ENODEV); 148 } 149 150 int 151 fdsize(dev_t dev) 152 { 153 return (0); 154 } 155 156 static int 157 fd_intr(arg) 158 void *arg; 159 { 160 struct fd_softc *sc = arg; 161 162 sc->fd_intrcnt.ev_count++; 163 fd_reset(sc); 164 return 0; 165 } 166