fdc_isa.c revision 1.16
1 /* $NetBSD: fdc_isa.c,v 1.16 2008/02/22 23:40:50 dyoung 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. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * @(#)fd.c 7.4 (Berkeley) 5/25/91 71 */ 72 73 #include <sys/cdefs.h> 74 __KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.16 2008/02/22 23:40:50 dyoung Exp $"); 75 76 #include "rnd.h" 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/callout.h> 81 #include <sys/device.h> 82 #include <sys/buf.h> 83 #include <sys/queue.h> 84 #if NRND > 0 85 #include <sys/rnd.h> 86 #endif 87 88 #include <sys/bus.h> 89 #include <sys/intr.h> 90 91 #include <dev/isa/isavar.h> 92 #include <dev/isa/isadmavar.h> 93 94 #include <dev/isa/fdreg.h> 95 #include <dev/isa/fdcvar.h> 96 97 static int fdc_isa_probe(device_t, struct cfdata *, void *); 98 static void fdc_isa_attach(device_t, device_t, void *); 99 static int fdc_isa_detach(device_t, int); 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 CFATTACH_DECL2(fdc_isa, sizeof(struct fdc_isa_softc), 108 fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet); 109 110 #ifdef NEWCONFIG 111 void fdc_isa_forceintr(void *); 112 #endif 113 114 static int 115 fdc_isa_probe(device_t parent, struct cfdata *match, void *aux) 116 { 117 struct isa_attach_args *ia = aux; 118 bus_space_tag_t iot; 119 bus_space_handle_t ioh, ctl_ioh, base_ioh; 120 int rv, iobase; 121 122 iot = ia->ia_iot; 123 rv = 0; 124 125 if (ia->ia_nio < 1) 126 return (0); 127 if (ia->ia_nirq < 1) 128 return (0); 129 if (ia->ia_ndrq < 1) 130 return (0); 131 132 if (ISA_DIRECT_CONFIG(ia)) 133 return (0); 134 135 /* Disallow wildcarded I/O addresses. */ 136 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 137 return (0); 138 139 /* Don't allow wildcarded IRQ/DRQ. */ 140 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 141 return (0); 142 143 if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 144 return (0); 145 146 /* Map the I/O space. */ 147 iobase = ia->ia_io[0].ir_addr; 148 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 149 return (0); 150 151 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 152 bus_space_unmap(iot, base_ioh, 6); 153 return (0); 154 } 155 156 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 157 bus_space_unmap(iot, base_ioh, 6); 158 return (0); 159 } 160 161 /* Not needed for the rest of the probe. */ 162 bus_space_unmap(iot, ctl_ioh, 1); 163 164 /* reset */ 165 bus_space_write_1(iot, ioh, fdout, 0); 166 delay(100); 167 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 168 169 /* see if it can handle a command */ 170 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 171 goto out; 172 out_fdc(iot, ioh, 0xdf); 173 out_fdc(iot, ioh, 2); 174 175 rv = 1; 176 ia->ia_nio = 1; 177 ia->ia_io[0].ir_size = FDC_NPORT; 178 179 ia->ia_nirq = 1; 180 ia->ia_ndrq = 1; 181 182 ia->ia_niomem = 0; 183 184 out: 185 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 186 return (rv); 187 } 188 189 static int 190 fdc_isa_detach(device_t self, int flags) 191 { 192 int rc; 193 struct fdc_isa_softc *isc = device_private(self); 194 struct fdc_softc *fdc = &isc->sc_fdc; 195 196 if ((rc = fdcdetach(self, flags)) != 0) 197 return rc; 198 199 isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih); 200 201 bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1); 202 203 bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */); 204 205 return 0; 206 } 207 208 static void 209 fdc_isa_attach(device_t parent, device_t self, void *aux) 210 { 211 struct fdc_isa_softc *isc = device_private(self); 212 struct fdc_softc *fdc = &isc->sc_fdc; 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[0].ir_drq; 220 221 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 222 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 223 aprint_normal_dev(&fdc->sc_dev, "unable to map I/O space\n"); 224 return; 225 } 226 227 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 228 &fdc->sc_ioh)) { 229 aprint_normal_dev(&fdc->sc_dev, 230 "unable to subregion I/O space\n"); 231 return; 232 } 233 234 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 235 &fdc->sc_fdctlioh)) { 236 aprint_normal_dev(&fdc->sc_dev, 237 "unable to map CTL I/O space\n"); 238 return; 239 } 240 241 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 242 IST_EDGE, IPL_BIO, fdcintr, fdc); 243 244 fdcattach(fdc); 245 } 246
Indexes created Wed Sep 24 14:09:57 GMT 2025