fdc_isa.c revision 1.4
1 /* $NetBSD: fdc_isa.c,v 1.4 2002/01/07 21:47:05 thorpej 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: fdc_isa.c,v 1.4 2002/01/07 21:47:05 thorpej Exp $"); 79 80 #include "rnd.h" 81 82 #include <sys/param.h> 83 #include <sys/systm.h> 84 #include <sys/callout.h> 85 #include <sys/device.h> 86 #include <sys/buf.h> 87 #include <sys/queue.h> 88 #if NRND > 0 89 #include <sys/rnd.h> 90 #endif 91 92 #include <machine/bus.h> 93 #include <machine/intr.h> 94 95 #include <dev/isa/isavar.h> 96 #include <dev/isa/isadmavar.h> 97 98 #include <dev/isa/fdreg.h> 99 #include <dev/isa/fdcvar.h> 100 101 int fdc_isa_probe(struct device *, struct cfdata *, void *); 102 void fdc_isa_attach(struct device *, struct device *, void *); 103 104 struct fdc_isa_softc { 105 struct fdc_softc sc_fdc; /* base fdc device */ 106 107 bus_space_handle_t sc_baseioh; /* base I/O handle */ 108 }; 109 110 struct cfattach fdc_isa_ca = { 111 sizeof(struct fdc_isa_softc), fdc_isa_probe, fdc_isa_attach 112 }; 113 114 #ifdef NEWCONFIG 115 void fdc_isa_forceintr(void *); 116 #endif 117 118 int 119 fdc_isa_probe(struct device *parent, 120 struct cfdata *match, 121 void *aux) 122 { 123 struct isa_attach_args *ia = aux; 124 bus_space_tag_t iot; 125 bus_space_handle_t ioh, ctl_ioh, base_ioh; 126 int rv, iobase; 127 128 iot = ia->ia_iot; 129 rv = 0; 130 131 if (ia->ia_nio < 1) 132 return (0); 133 if (ia->ia_nirq < 1) 134 return (0); 135 if (ia->ia_ndrq < 1) 136 return (0); 137 138 if (ISA_DIRECT_CONFIG(ia)) 139 return (0); 140 141 /* Disallow wildcarded I/O addresses. */ 142 if (ia->ia_io[0].ir_addr == ISACF_PORT_DEFAULT) 143 return (0); 144 145 /* Don't allow wildcarded IRQ/DRQ. */ 146 if (ia->ia_irq[0].ir_irq == ISACF_IRQ_DEFAULT) 147 return (0); 148 149 if (ia->ia_drq[0].ir_drq == ISACF_DRQ_DEFAULT) 150 return (0); 151 152 /* Map the I/O space. */ 153 iobase = ia->ia_io[0].ir_addr; 154 if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh)) 155 return (0); 156 157 if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) { 158 bus_space_unmap(iot, base_ioh, 6); 159 return (0); 160 } 161 162 if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) { 163 bus_space_unmap(iot, base_ioh, 6); 164 return (0); 165 } 166 167 /* Not needed for the rest of the probe. */ 168 bus_space_unmap(iot, ctl_ioh, 1); 169 170 /* reset */ 171 bus_space_write_1(iot, ioh, fdout, 0); 172 delay(100); 173 bus_space_write_1(iot, ioh, fdout, FDO_FRST); 174 175 /* see if it can handle a command */ 176 if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0) 177 goto out; 178 out_fdc(iot, ioh, 0xdf); 179 out_fdc(iot, ioh, 2); 180 181 rv = 1; 182 ia->ia_nio = 1; 183 ia->ia_io[0].ir_size = FDC_NPORT; 184 185 ia->ia_nirq = 1; 186 ia->ia_ndrq = 1; 187 188 ia->ia_niomem = 0; 189 190 out: 191 bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */); 192 return (rv); 193 } 194 195 void 196 fdc_isa_attach(struct device *parent, 197 struct device *self, 198 void *aux) 199 { 200 struct fdc_softc *fdc = (void *) self; 201 struct fdc_isa_softc *isc = (void *) self; 202 struct isa_attach_args *ia = aux; 203 204 printf("\n"); 205 206 fdc->sc_iot = ia->ia_iot; 207 fdc->sc_ic = ia->ia_ic; 208 fdc->sc_drq = ia->ia_drq[0].ir_drq; 209 210 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr, 211 6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) { 212 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 213 return; 214 } 215 216 if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4, 217 &fdc->sc_ioh)) { 218 printf("%s: unable to subregion I/O space\n", 219 fdc->sc_dev.dv_xname); 220 return; 221 } 222 223 if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0, 224 &fdc->sc_fdctlioh)) { 225 printf("%s: unable to map CTL I/O space\n", 226 fdc->sc_dev.dv_xname); 227 return; 228 } 229 230 fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 231 IST_EDGE, IPL_BIO, fdcintr, fdc); 232 233 fdcattach(fdc); 234 } 235
Indexes created Thu Sep 25 02:09:54 GMT 2025