fdcisa.c revision 1.10.74.1
1 /* $NetBSD: fdcisa.c,v 1.10.74.1 2008/04/03 12:42:12 mjf 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: fdcisa.c,v 1.10.74.1 2008/04/03 12:42:12 mjf Exp $"); 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/callout.h> 79 #include <sys/device.h> 80 81 #include <machine/bus.h> 82 83 #include <dev/isa/isavar.h> 84 #include <dev/isa/isadmavar.h> 85 #include <dev/isa/fdreg.h> 86 #include <dev/isa/fdcvar.h> 87 88 #include <atari/atari/device.h> 89 90 91 /* controller driver configuration */ 92 int fdc_isa_probe (device_t, cfdata_t, void *); 93 void fdc_isa_attach (device_t, device_t, void *); 94 95 struct fdc_isa_softc { 96 struct fdc_softc sc_fdc; /* base fdc device */ 97 bus_space_handle_t sc_baseioh; /* base I/O handle */ 98 }; 99 100 CFATTACH_DECL_NEW(fdcisa, sizeof(struct fdc_isa_softc), 101 fdc_isa_probe, fdc_isa_attach, NULL, NULL); 102 103 int 104 fdc_isa_probe(device_t parent, cfdata_t cfp, void *aux) 105 { 106 struct isa_attach_args *ia = aux; 107 static int fdc_matched = 0; 108 bus_space_tag_t iot; 109 bus_space_handle_t ioh, ctl_ioh, base_ioh; 110 int iobase; 111 112 if (!atari_realconfig) 113 return 0; 114 115 /* Match only once */ 116 if (fdc_matched) 117 return 0; 118 119 iot = ia->ia_iot; 120 121 if (ia->ia_nio < 1) 122 return (0); 123 if (ia->ia_nirq < 1) 124 return (0); 125 if (ia->ia_ndrq < 1) 126 return (0); 127 128 if (ISA_DIRECT_CONFIG(ia)) 129 return (0); 130 131 /* Disallow wildcarded I/O addresses. */ 132 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 133 return (0); 134 135 /* Don't allow wildcarded IRQ/DRQ. */ 136 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 137 return (0); 138 139 if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 140 return (0); 141 142 /* Map the i/o space. */ 143 iobase = ia->ia_io[0].ir_addr; 144 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) { 145 printf("fdcisaprobe: cannot map io-area\n"); 146 return 0; 147 } 148 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 149 bus_space_unmap(iot, base_ioh, 6); 150 return (0); 151 } 152 153 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 154 bus_space_unmap(iot, base_ioh, 6); 155 return (0); 156 } 157 158 /* Not needed for the rest of the probe. */ 159 bus_space_unmap(iot, ctl_ioh, 1); 160 161 /* reset */ 162 bus_space_write_1(iot, ioh, fdout, 0); 163 delay(100); 164 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 165 166 /* see if it can handle a command */ 167 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 168 goto out; 169 out_fdc(iot, ioh, 0xdf); 170 out_fdc(iot, ioh, 2); 171 172 fdc_matched = 1; 173 ia->ia_nio = 1; 174 ia->ia_io[0].ir_size = FDC_NPORT; 175 176 ia->ia_nirq = 1; 177 ia->ia_ndrq = 1; 178 179 ia->ia_niomem = 0; 180 181 out: 182 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 183 184 return fdc_matched; 185 } 186 187 void 188 fdc_isa_attach(device_t parent, device_t self, void *aux) 189 { 190 struct fdc_isa_softc *isc = device_private(self); 191 struct fdc_softc *fdc = &isc->sc_fdc; 192 struct isa_attach_args *ia = aux; 193 194 aprint_normal("\n"); 195 196 fdc->sc_dev = self; 197 fdc->sc_iot = ia->ia_iot; 198 fdc->sc_ic = ia->ia_ic; 199 fdc->sc_drq = ia->ia_drq[0].ir_drq; 200 201 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 202 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 203 aprint_error_dev(self, "unable to map I/O space\n"); 204 return; 205 } 206 207 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 208 &fdc->sc_ioh)) { 209 aprint_error_dev(self, "unable to subregion I/O space\n"); 210 return; 211 } 212 213 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 214 &fdc->sc_fdctlioh)) { 215 aprint_error_dev(self, "unable to map CTL I/O space\n"); 216 return; 217 } 218 219 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 220 IST_EDGE, IPL_BIO, fdcintr, fdc); 221 222 fdcattach(fdc); 223 } 224
Indexes created Fri Oct 17 03:10:13 GMT 2025