1 /* $NetBSD: fdc_isa.c,v 1.3 2001/11/13 08:01:14 lukem 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 <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.3 2001/11/13 08:01:14 lukem Exp $"); 79 80 #include "rnd.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/device.h> 86 #include <sys/buf.h> 87 #include <sys/queue.h> 88 #if NRND > 0 89 #include <sys/rnd.h> 90 #endif 91 92 #include <machine/bus.h> 93 #include <machine/intr.h> 94 95 #include <dev/isa/isavar.h> 96 #include <dev/isa/isadmavar.h> 97 98 #include <dev/isa/fdreg.h> 99 #include <dev/isa/fdcvar.h> 100 101 int fdc_isa_probe(struct device *, struct cfdata *, void *); 102 void fdc_isa_attach(struct device *, struct device *, void *); 103 104 struct fdc_isa_softc { 105 struct fdc_softc sc_fdc; /* base fdc device */ 106 107 bus_space_handle_t sc_baseioh; /* base I/O handle */ 108 }; 109 110 struct cfattach fdc_isa_ca = { 111 sizeof(struct fdc_isa_softc), fdc_isa_probe, fdc_isa_attach 112 }; 113 114 #ifdef NEWCONFIG 115 void fdc_isa_forceintr(void *); 116 #endif 117 118 int 119 fdc_isa_probe(struct device *parent, 120 struct cfdata *match, 121 void *aux) 122 { 123 struct isa_attach_args *ia = aux; 124 bus_space_tag_t iot; 125 bus_space_handle_t ioh, ctl_ioh, base_ioh; 126 int rv; 127 128 iot = ia->ia_iot; 129 rv = 0; 130 131 /* Disallow wildcarded I/O addresses. */ 132 if (ia->ia_iobase == IOBASEUNK) 133 return (0); 134 135 /* Map the I/O space. */ 136 if (bus_space_map(iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 137 return (0); 138 139 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 140 bus_space_unmap(iot, base_ioh, 6); 141 return (0); 142 } 143 144 if (bus_space_map(iot, ia->ia_iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 145 bus_space_unmap(iot, base_ioh, 6); 146 return (0); 147 } 148 149 /* Not needed for the rest of the probe. */ 150 bus_space_unmap(iot, ctl_ioh, 1); 151 152 /* reset */ 153 bus_space_write_1(iot, ioh, fdout, 0); 154 delay(100); 155 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 156 157 /* see if it can handle a command */ 158 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 159 goto out; 160 out_fdc(iot, ioh, 0xdf); 161 out_fdc(iot, ioh, 2); 162 163 #ifdef NEWCONFIG 164 if (ia->ia_iobase = IOBASEUNK || ia->ia_drq == DRQUNK) 165 return (0); 166 167 if (ia->ia_irq == IRQUNK) { 168 ia->ia_irq = isa_discoverintr(fdc_isa_forceintr, aux); 169 if (ia->ia_irq == IRQNONE) 170 goto out; 171 172 /* reset it again */ 173 bus_space_write_1(iot, ioh, fdout, 0); 174 delay(100); 175 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 176 } 177 #endif 178 179 rv = 1; 180 ia->ia_iosize = FDC_NPORT; 181 ia->ia_msize = 0; 182 183 out: 184 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 185 return (rv); 186 } 187 188 #ifdef NEWCONFIG 189 /* 190 * XXX This is broken, and needs fixing. In general, the interface needs 191 * XXX to change. 192 */ 193 void 194 fdc_isa_forceintr(void *aux) 195 { 196 struct isa_attach_args *ia = aux; 197 int iobase = ia->ia_iobase; 198 199 /* 200 * The motor is off; this should generate an error with or 201 * without a disk drive present. 202 */ 203 out_fdc(iot, ioh, NE7CMD_SEEK); 204 out_fdc(iot, ioh, 0); 205 out_fdc(iot, ioh, 0); 206 } 207 #endif 208 209 void 210 fdc_isa_attach(struct device *parent, 211 struct device *self, 212 void *aux) 213 { 214 struct fdc_softc *fdc = (void *) self; 215 struct fdc_isa_softc *isc = (void *) self; 216 struct isa_attach_args *ia = aux; 217 218 printf("\n"); 219 220 fdc->sc_iot = ia->ia_iot; 221 fdc->sc_ic = ia->ia_ic; 222 fdc->sc_drq = ia->ia_drq; 223 224 if (bus_space_map(fdc->sc_iot, ia->ia_iobase, 6 /* FDC_NPORT */, 0, 225 &isc->sc_baseioh)) { 226 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 227 return; 228 } 229 230 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 231 &fdc->sc_ioh)) { 232 printf("%s: unable to subregion I/O space\n", 233 fdc->sc_dev.dv_xname); 234 return; 235 } 236 237 if (bus_space_map(fdc->sc_iot, ia->ia_iobase + fdctl + 2, 1, 0, 238 &fdc->sc_fdctlioh)) { 239 printf("%s: unable to map CTL I/O space\n", 240 fdc->sc_dev.dv_xname); 241 return; 242 } 243 244 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 245 IPL_BIO, fdcintr, fdc); 246 247 fdcattach(fdc); 248 } 249