1 /* $NetBSD: fdc_isa.c,v 1.18 2008/04/28 20:23:52 martin 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 2008/04/28 20:23:52 martin Exp $"); 68 69 #include "rnd.h" 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/callout.h> 74 #include <sys/device.h> 75 #include <sys/buf.h> 76 #include <sys/queue.h> 77 #if NRND > 0 78 #include <sys/rnd.h> 79 #endif 80 81 #include <sys/bus.h> 82 #include <sys/intr.h> 83 84 #include <dev/isa/isavar.h> 85 #include <dev/isa/isadmavar.h> 86 87 #include <dev/isa/fdreg.h> 88 #include <dev/isa/fdcvar.h> 89 90 static int fdc_isa_probe(device_t, cfdata_t, void *); 91 static void fdc_isa_attach(device_t, device_t, void *); 92 static int fdc_isa_detach(device_t, int); 93 94 struct fdc_isa_softc { 95 struct fdc_softc sc_fdc; /* base fdc device */ 96 97 bus_space_handle_t sc_baseioh; /* base I/O handle */ 98 }; 99 100 CFATTACH_DECL2_NEW(fdc_isa, sizeof(struct fdc_isa_softc), 101 fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet); 102 103 #ifdef NEWCONFIG 104 void fdc_isa_forceintr(void *); 105 #endif 106 107 static int 108 fdc_isa_probe(device_t parent, cfdata_t match, void *aux) 109 { 110 struct isa_attach_args *ia = aux; 111 bus_space_tag_t iot; 112 bus_space_handle_t ioh, ctl_ioh, base_ioh; 113 int rv, iobase; 114 115 iot = ia->ia_iot; 116 rv = 0; 117 118 if (ia->ia_nio < 1) 119 return (0); 120 if (ia->ia_nirq < 1) 121 return (0); 122 if (ia->ia_ndrq < 1) 123 return (0); 124 125 if (ISA_DIRECT_CONFIG(ia)) 126 return (0); 127 128 /* Disallow wildcarded I/O addresses. */ 129 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 130 return (0); 131 132 /* Don't allow wildcarded IRQ/DRQ. */ 133 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 134 return (0); 135 136 if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 137 return (0); 138 139 /* Map the I/O space. */ 140 iobase = ia->ia_io[0].ir_addr; 141 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 142 return (0); 143 144 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 145 bus_space_unmap(iot, base_ioh, 6); 146 return (0); 147 } 148 149 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 150 bus_space_unmap(iot, base_ioh, 6); 151 return (0); 152 } 153 154 /* Not needed for the rest of the probe. */ 155 bus_space_unmap(iot, ctl_ioh, 1); 156 157 /* reset */ 158 bus_space_write_1(iot, ioh, fdout, 0); 159 delay(100); 160 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 161 162 /* see if it can handle a command */ 163 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 164 goto out; 165 out_fdc(iot, ioh, 0xdf); 166 out_fdc(iot, ioh, 2); 167 168 rv = 1; 169 ia->ia_nio = 1; 170 ia->ia_io[0].ir_size = FDC_NPORT; 171 172 ia->ia_nirq = 1; 173 ia->ia_ndrq = 1; 174 175 ia->ia_niomem = 0; 176 177 out: 178 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 179 return (rv); 180 } 181 182 static int 183 fdc_isa_detach(device_t self, int flags) 184 { 185 int rc; 186 struct fdc_isa_softc *isc = device_private(self); 187 struct fdc_softc *fdc = &isc->sc_fdc; 188 189 if ((rc = fdcdetach(self, flags)) != 0) 190 return rc; 191 192 isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih); 193 194 bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1); 195 196 bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */); 197 198 return 0; 199 } 200 201 static void 202 fdc_isa_attach(device_t parent, device_t self, void *aux) 203 { 204 struct fdc_isa_softc *isc = device_private(self); 205 struct fdc_softc *fdc = &isc->sc_fdc; 206 struct isa_attach_args *ia = aux; 207 208 aprint_naive("\n"); 209 aprint_normal("\n"); 210 211 fdc->sc_dev = self; 212 fdc->sc_iot = ia->ia_iot; 213 fdc->sc_ic = ia->ia_ic; 214 fdc->sc_drq = ia->ia_drq[0].ir_drq; 215 216 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 217 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 218 aprint_normal_dev(fdc->sc_dev, "unable to map I/O space\n"); 219 return; 220 } 221 222 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 223 &fdc->sc_ioh)) { 224 aprint_normal_dev(fdc->sc_dev, 225 "unable to subregion I/O space\n"); 226 return; 227 } 228 229 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 230 &fdc->sc_fdctlioh)) { 231 aprint_normal_dev(fdc->sc_dev, 232 "unable to map CTL I/O space\n"); 233 return; 234 } 235 236 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 237 IST_EDGE, IPL_BIO, fdcintr, fdc); 238 239 fdcattach(fdc); 240 } 241