1 /* $NetBSD: fdcisa.c,v 1.16 2023/01/06 10:28:28 tsutsui 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: fdcisa.c,v 1.16 2023/01/06 10:28:28 tsutsui Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/callout.h> 72 #include <sys/device.h> 73 74 #include <sys/bus.h> 75 76 #include <dev/isa/isavar.h> 77 #include <dev/isa/isadmavar.h> 78 #include <dev/isa/fdreg.h> 79 #include <dev/isa/fdcvar.h> 80 81 #include <atari/atari/device.h> 82 83 84 /* controller driver configuration */ 85 static int fdc_isa_probe (device_t, cfdata_t, void *); 86 static void fdc_isa_attach (device_t, device_t, void *); 87 88 struct fdc_isa_softc { 89 struct fdc_softc sc_fdc; /* base fdc device */ 90 bus_space_handle_t sc_baseioh; /* base I/O handle */ 91 }; 92 93 CFATTACH_DECL_NEW(fdcisa, sizeof(struct fdc_isa_softc), 94 fdc_isa_probe, fdc_isa_attach, NULL, NULL); 95 96 static int 97 fdc_isa_probe(device_t parent, cfdata_t cfp, void *aux) 98 { 99 struct isa_attach_args *ia = aux; 100 static int fdc_matched = 0; 101 bus_space_tag_t iot; 102 bus_space_handle_t ioh, ctl_ioh, base_ioh; 103 int iobase; 104 105 if (!atari_realconfig) 106 return 0; 107 108 /* Match only once */ 109 if (fdc_matched) 110 return 0; 111 112 iot = ia->ia_iot; 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 printf("fdcisaprobe: cannot map io-area\n"); 139 return 0; 140 } 141 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 142 bus_space_unmap(iot, base_ioh, 6); 143 return (0); 144 } 145 146 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 147 bus_space_unmap(iot, base_ioh, 6); 148 return (0); 149 } 150 151 /* Not needed for the rest of the probe. */ 152 bus_space_unmap(iot, ctl_ioh, 1); 153 154 /* reset */ 155 bus_space_write_1(iot, ioh, fdout, 0); 156 delay(100); 157 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 158 159 /* see if it can handle a command */ 160 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 161 goto out; 162 out_fdc(iot, ioh, 0xdf); 163 out_fdc(iot, ioh, 2); 164 165 fdc_matched = 1; 166 ia->ia_nio = 1; 167 ia->ia_io[0].ir_size = FDC_NPORT; 168 169 ia->ia_nirq = 1; 170 ia->ia_ndrq = 1; 171 172 ia->ia_niomem = 0; 173 174 out: 175 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 176 177 return fdc_matched; 178 } 179 180 static void 181 fdc_isa_attach(device_t parent, device_t self, void *aux) 182 { 183 struct fdc_isa_softc *isc = device_private(self); 184 struct fdc_softc *fdc = &isc->sc_fdc; 185 struct isa_attach_args *ia = aux; 186 187 aprint_normal("\n"); 188 189 fdc->sc_dev = self; 190 fdc->sc_iot = ia->ia_iot; 191 fdc->sc_ic = ia->ia_ic; 192 fdc->sc_drq = ia->ia_drq[0].ir_drq; 193 194 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 195 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 196 aprint_error_dev(self, "unable to map I/O space\n"); 197 return; 198 } 199 200 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 201 &fdc->sc_ioh)) { 202 aprint_error_dev(self, "unable to subregion I/O space\n"); 203 return; 204 } 205 206 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 207 &fdc->sc_fdctlioh)) { 208 aprint_error_dev(self, "unable to map CTL I/O space\n"); 209 return; 210 } 211 212 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 213 IST_EDGE, IPL_BIO, fdcintr, fdc); 214 215 fdcattach(fdc); 216 } 217
Indexes created Mon Sep 22 05:09:51 GMT 2025