fdcisa.c revision 1.5
1 /* $NetBSD: fdcisa.c,v 1.5 2003/07/15 01:19:53 lukem 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. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)fd.c 7.4 (Berkeley) 5/25/91 75 */ 76 77 #include <sys/cdefs.h> 78 __KERNEL_RCSID(0, "$NetBSD: fdcisa.c,v 1.5 2003/07/15 01:19:53 lukem Exp $"); 79 80 #include <sys/param.h> 81 #include <sys/systm.h> 82 #include <sys/callout.h> 83 #include <sys/device.h> 84 85 #include <machine/bus.h> 86 87 #include <dev/isa/isavar.h> 88 #include <dev/isa/isadmavar.h> 89 #include <dev/isa/fdreg.h> 90 #include <dev/isa/fdcvar.h> 91 92 #include <atari/atari/device.h> 93 94 95 /* controller driver configuration */ 96 int fdc_isa_probe __P((struct device *, struct cfdata *, void *)); 97 void fdc_isa_attach __P((struct device *, struct device *, void *)); 98 99 struct fdc_isa_softc { 100 struct fdc_softc sc_fdc; /* base fdc device */ 101 bus_space_handle_t sc_baseioh; /* base I/O handle */ 102 }; 103 104 CFATTACH_DECL(fdcisa, sizeof(struct fdc_isa_softc), 105 fdc_isa_probe, fdc_isa_attach, NULL, NULL); 106 107 int 108 fdc_isa_probe(parent, cfp, aux) 109 struct device *parent; 110 struct cfdata *cfp; 111 void *aux; 112 { 113 struct isa_attach_args *ia = aux; 114 static int fdc_matched = 0; 115 bus_space_tag_t iot; 116 bus_space_handle_t ioh, ctl_ioh, base_ioh; 117 int iobase; 118 119 if (!atari_realconfig) 120 return 0; 121 122 /* Match only once */ 123 if (fdc_matched) 124 return 0; 125 126 iot = ia->ia_iot; 127 128 if (ia->ia_nio < 1) 129 return (0); 130 if (ia->ia_nirq < 1) 131 return (0); 132 if (ia->ia_ndrq < 1) 133 return (0); 134 135 if (ISA_DIRECT_CONFIG(ia)) 136 return (0); 137 138 /* Disallow wildcarded I/O addresses. */ 139 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 140 return (0); 141 142 /* Don't allow wildcarded IRQ/DRQ. */ 143 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 144 return (0); 145 146 if (ia->ia_drq[0].ir_drq == ISACF_DRQ_DEFAULT) 147 return (0); 148 149 /* Map the i/o space. */ 150 iobase = ia->ia_io[0].ir_addr; 151 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) { 152 printf("fdcisaprobe: cannot map io-area\n"); 153 return 0; 154 } 155 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 156 bus_space_unmap(iot, base_ioh, 6); 157 return (0); 158 } 159 160 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 161 bus_space_unmap(iot, base_ioh, 6); 162 return (0); 163 } 164 165 /* Not needed for the rest of the probe. */ 166 bus_space_unmap(iot, ctl_ioh, 1); 167 168 /* reset */ 169 bus_space_write_1(iot, ioh, fdout, 0); 170 delay(100); 171 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 172 173 /* see if it can handle a command */ 174 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 175 goto out; 176 out_fdc(iot, ioh, 0xdf); 177 out_fdc(iot, ioh, 2); 178 179 fdc_matched = 1; 180 ia->ia_nio = 1; 181 ia->ia_io[0].ir_size = FDC_NPORT; 182 183 ia->ia_nirq = 1; 184 ia->ia_ndrq = 1; 185 186 ia->ia_niomem = 0; 187 188 out: 189 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 190 191 return fdc_matched; 192 } 193 194 void 195 fdc_isa_attach(parent, self, aux) 196 struct device *parent, *self; 197 void *aux; 198 { 199 struct fdc_softc *fdc = (void *)self; 200 struct fdc_isa_softc *isc = (void *)self; 201 struct isa_attach_args *ia = aux; 202 printf("\n"); 203 204 fdc->sc_iot = ia->ia_iot; 205 fdc->sc_ic = ia->ia_ic; 206 fdc->sc_drq = ia->ia_drq[0].ir_drq; 207 208 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 209 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 210 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 211 return; 212 } 213 214 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 215 &fdc->sc_ioh)) { 216 printf("%s: unable to subregion I/O space\n", 217 fdc->sc_dev.dv_xname); 218 return; 219 } 220 221 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 222 &fdc->sc_fdctlioh)) { 223 printf("%s: unable to map CTL I/O space\n", 224 fdc->sc_dev.dv_xname); 225 return; 226 } 227 228 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 229 IST_EDGE, IPL_BIO, fdcintr, fdc); 230 231 fdcattach(fdc); 232 } 233
Indexes created Fri Sep 26 20:09:58 GMT 2025