fdc_isa.c revision 1.2
1 /* $NetBSD: fdc_isa.c,v 1.2 2000/05/02 03:33:45 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /*- 40 * Copyright (c) 1990 The Regents of the University of California. 41 * All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * Don Ahn. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)fd.c 7.4 (Berkeley) 5/25/91 75 */ 76 77 #include "rnd.h" 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 #include <sys/callout.h> 82 #include <sys/device.h> 83 #include <sys/buf.h> 84 #include <sys/queue.h> 85 #if NRND > 0 86 #include <sys/rnd.h> 87 #endif 88 89 #include <machine/bus.h> 90 #include <machine/intr.h> 91 92 #include <dev/isa/isavar.h> 93 #include <dev/isa/isadmavar.h> 94 95 #include <dev/isa/fdreg.h> 96 #include <dev/isa/fdcvar.h> 97 98 int fdc_isa_probe(struct device *, struct cfdata *, void *); 99 void fdc_isa_attach(struct device *, struct device *, void *); 100 101 struct fdc_isa_softc { 102 struct fdc_softc sc_fdc; /* base fdc device */ 103 104 bus_space_handle_t sc_baseioh; /* base I/O handle */ 105 }; 106 107 struct cfattach fdc_isa_ca = { 108 sizeof(struct fdc_isa_softc), fdc_isa_probe, fdc_isa_attach 109 }; 110 111 #ifdef NEWCONFIG 112 void fdc_isa_forceintr(void *); 113 #endif 114 115 int 116 fdc_isa_probe(struct device *parent, 117 struct cfdata *match, 118 void *aux) 119 { 120 struct isa_attach_args *ia = aux; 121 bus_space_tag_t iot; 122 bus_space_handle_t ioh, ctl_ioh, base_ioh; 123 int rv; 124 125 iot = ia->ia_iot; 126 rv = 0; 127 128 /* Disallow wildcarded I/O addresses. */ 129 if (ia->ia_iobase == IOBASEUNK) 130 return (0); 131 132 /* Map the I/O space. */ 133 if (bus_space_map(iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 134 return (0); 135 136 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 137 bus_space_unmap(iot, base_ioh, 6); 138 return (0); 139 } 140 141 if (bus_space_map(iot, ia->ia_iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 142 bus_space_unmap(iot, base_ioh, 6); 143 return (0); 144 } 145 146 /* Not needed for the rest of the probe. */ 147 bus_space_unmap(iot, ctl_ioh, 1); 148 149 /* reset */ 150 bus_space_write_1(iot, ioh, fdout, 0); 151 delay(100); 152 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 153 154 /* see if it can handle a command */ 155 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 156 goto out; 157 out_fdc(iot, ioh, 0xdf); 158 out_fdc(iot, ioh, 2); 159 160 #ifdef NEWCONFIG 161 if (ia->ia_iobase = IOBASEUNK || ia->ia_drq == DRQUNK) 162 return (0); 163 164 if (ia->ia_irq == IRQUNK) { 165 ia->ia_irq = isa_discoverintr(fdc_isa_forceintr, aux); 166 if (ia->ia_irq == IRQNONE) 167 goto out; 168 169 /* reset it again */ 170 bus_space_write_1(iot, ioh, fdout, 0); 171 delay(100); 172 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 173 } 174 #endif 175 176 rv = 1; 177 ia->ia_iosize = FDC_NPORT; 178 ia->ia_msize = 0; 179 180 out: 181 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 182 return (rv); 183 } 184 185 #ifdef NEWCONFIG 186 /* 187 * XXX This is broken, and needs fixing. In general, the interface needs 188 * XXX to change. 189 */ 190 void 191 fdc_isa_forceintr(void *aux) 192 { 193 struct isa_attach_args *ia = aux; 194 int iobase = ia->ia_iobase; 195 196 /* 197 * The motor is off; this should generate an error with or 198 * without a disk drive present. 199 */ 200 out_fdc(iot, ioh, NE7CMD_SEEK); 201 out_fdc(iot, ioh, 0); 202 out_fdc(iot, ioh, 0); 203 } 204 #endif 205 206 void 207 fdc_isa_attach(struct device *parent, 208 struct device *self, 209 void *aux) 210 { 211 struct fdc_softc *fdc = (void *) self; 212 struct fdc_isa_softc *isc = (void *) self; 213 struct isa_attach_args *ia = aux; 214 215 printf("\n"); 216 217 fdc->sc_iot = ia->ia_iot; 218 fdc->sc_ic = ia->ia_ic; 219 fdc->sc_drq = ia->ia_drq; 220 221 if (bus_space_map(fdc->sc_iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0, 222 &isc->sc_baseioh)) { 223 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 224 return; 225 } 226 227 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 228 &fdc->sc_ioh)) { 229 printf("%s: unable to subregion I/O space\n", 230 fdc->sc_dev.dv_xname); 231 return; 232 } 233 234 if (bus_space_map(fdc->sc_iot, ia->ia_iobase + fdctl + 2, 1, 0, 235 &fdc->sc_fdctlioh)) { 236 printf("%s: unable to map CTL I/O space\n", 237 fdc->sc_dev.dv_xname); 238 return; 239 } 240 241 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 242 IPL_BIO, fdcintr, fdc); 243 244 fdcattach(fdc); 245 } 246
Indexes created Tue Sep 23 20:09:58 GMT 2025