fdc_isa.c revision 1.18.34.1
1 /* $NetBSD: fdc_isa.c,v 1.18.34.1 2012/04/17 00:07:38 yamt 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1990 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to Berkeley by 37 * Don Ahn. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * @(#)fd.c 7.4 (Berkeley) 5/25/91 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.18.34.1 2012/04/17 00:07:38 yamt Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/callout.h> 72 #include <sys/device.h> 73 #include <sys/buf.h> 74 #include <sys/queue.h> 75 #include <sys/rnd.h> 76 77 #include <sys/bus.h> 78 #include <sys/intr.h> 79 80 #include <dev/isa/isavar.h> 81 #include <dev/isa/isadmavar.h> 82 83 #include <dev/isa/fdreg.h> 84 #include <dev/isa/fdcvar.h> 85 86 static int fdc_isa_probe(device_t, cfdata_t, void *); 87 static void fdc_isa_attach(device_t, device_t, void *); 88 static int fdc_isa_detach(device_t, int); 89 90 struct fdc_isa_softc { 91 struct fdc_softc sc_fdc; /* base fdc device */ 92 93 bus_space_handle_t sc_baseioh; /* base I/O handle */ 94 }; 95 96 CFATTACH_DECL2_NEW(fdc_isa, sizeof(struct fdc_isa_softc), 97 fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet); 98 99 #ifdef NEWCONFIG 100 void fdc_isa_forceintr(void *); 101 #endif 102 103 static int 104 fdc_isa_probe(device_t parent, cfdata_t match, void *aux) 105 { 106 struct isa_attach_args *ia = aux; 107 bus_space_tag_t iot; 108 bus_space_handle_t ioh, ctl_ioh, base_ioh; 109 int rv, iobase; 110 111 iot = ia->ia_iot; 112 rv = 0; 113 114 if (ia->ia_nio < 1) 115 return (0); 116 if (ia->ia_nirq < 1) 117 return (0); 118 if (ia->ia_ndrq < 1) 119 return (0); 120 121 if (ISA_DIRECT_CONFIG(ia)) 122 return (0); 123 124 /* Disallow wildcarded I/O addresses. */ 125 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 126 return (0); 127 128 /* Don't allow wildcarded IRQ/DRQ. */ 129 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 130 return (0); 131 132 if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 133 return (0); 134 135 /* Map the I/O space. */ 136 iobase = ia->ia_io[0].ir_addr; 137 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 138 return (0); 139 140 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 141 bus_space_unmap(iot, base_ioh, 6); 142 return (0); 143 } 144 145 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 146 bus_space_unmap(iot, base_ioh, 6); 147 return (0); 148 } 149 150 /* Not needed for the rest of the probe. */ 151 bus_space_unmap(iot, ctl_ioh, 1); 152 153 /* reset */ 154 bus_space_write_1(iot, ioh, fdout, 0); 155 delay(100); 156 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 157 158 /* see if it can handle a command */ 159 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 160 goto out; 161 out_fdc(iot, ioh, 0xdf); 162 out_fdc(iot, ioh, 2); 163 164 rv = 1; 165 ia->ia_nio = 1; 166 ia->ia_io[0].ir_size = FDC_NPORT; 167 168 ia->ia_nirq = 1; 169 ia->ia_ndrq = 1; 170 171 ia->ia_niomem = 0; 172 173 out: 174 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 175 return (rv); 176 } 177 178 static int 179 fdc_isa_detach(device_t self, int flags) 180 { 181 int rc; 182 struct fdc_isa_softc *isc = device_private(self); 183 struct fdc_softc *fdc = &isc->sc_fdc; 184 185 if ((rc = fdcdetach(self, flags)) != 0) 186 return rc; 187 188 isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih); 189 190 bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1); 191 192 bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */); 193 194 return 0; 195 } 196 197 static void 198 fdc_isa_attach(device_t parent, device_t self, void *aux) 199 { 200 struct fdc_isa_softc *isc = device_private(self); 201 struct fdc_softc *fdc = &isc->sc_fdc; 202 struct isa_attach_args *ia = aux; 203 204 aprint_naive("\n"); 205 aprint_normal("\n"); 206 207 fdc->sc_dev = self; 208 fdc->sc_iot = ia->ia_iot; 209 fdc->sc_ic = ia->ia_ic; 210 fdc->sc_drq = ia->ia_drq[0].ir_drq; 211 212 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 213 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 214 aprint_normal_dev(fdc->sc_dev, "unable to map I/O space\n"); 215 return; 216 } 217 218 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 219 &fdc->sc_ioh)) { 220 aprint_normal_dev(fdc->sc_dev, 221 "unable to subregion I/O space\n"); 222 return; 223 } 224 225 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 226 &fdc->sc_fdctlioh)) { 227 aprint_normal_dev(fdc->sc_dev, 228 "unable to map CTL I/O space\n"); 229 return; 230 } 231 232 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 233 IST_EDGE, IPL_BIO, fdcintr, fdc); 234 235 fdcattach(fdc); 236 } 237
Indexes created Wed Oct 15 16:09:53 GMT 2025