fdc_pnpbios.c revision 1.4
1 /* $NetBSD: fdc_pnpbios.c,v 1.4 2002/09/27 20:33:07 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 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 * PNPBIOS attachment for the PC Floppy Controller driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: fdc_pnpbios.c,v 1.4 2002/09/27 20:33:07 thorpej Exp $"); 45 46 #include "rnd.h" 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/callout.h> 51 #include <sys/device.h> 52 #include <sys/buf.h> 53 #include <sys/queue.h> 54 #if NRND > 0 55 #include <sys/rnd.h> 56 #endif 57 58 #include <machine/bus.h> 59 #include <machine/intr.h> 60 61 #include <dev/isa/isavar.h> 62 #include <dev/isa/isadmavar.h> 63 64 #include <dev/isa/fdcvar.h> 65 66 #include <i386/pnpbios/pnpbiosvar.h> 67 68 int fdc_pnpbios_match(struct device *, struct cfdata *, void *); 69 void fdc_pnpbios_attach(struct device *, struct device *, void *); 70 71 struct fdc_pnpbios_softc { 72 struct fdc_softc sc_fdc; /* base fdc device */ 73 74 bus_space_handle_t sc_baseioh; /* base I/O handle */ 75 }; 76 77 78 const struct cfattach fdc_pnpbios_ca = { 79 sizeof(struct fdc_pnpbios_softc), fdc_pnpbios_match, 80 fdc_pnpbios_attach, 81 }; 82 83 int 84 fdc_pnpbios_match(struct device *parent, 85 struct cfdata *match, 86 void *aux) 87 { 88 struct pnpbiosdev_attach_args *aa = aux; 89 90 if (strcmp(aa->idstr, "PNP0700") == 0) 91 return (1); 92 93 return (0); 94 } 95 96 void 97 fdc_pnpbios_attach(struct device *parent, 98 struct device *self, 99 void *aux) 100 { 101 struct fdc_softc *fdc = (void *) self; 102 struct fdc_pnpbios_softc *pdc = (void *) self; 103 struct pnpbiosdev_attach_args *aa = aux; 104 int size, base; 105 106 printf("\n"); 107 108 fdc->sc_ic = aa->ic; 109 110 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot, 111 &pdc->sc_baseioh)) { 112 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 113 return; 114 } 115 116 /* 117 * Start accounting for "odd" pnpbios's. Some probe as 4 ports, 118 * some as 6 and some don't give the ctl port back. 119 */ 120 121 if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) { 122 printf("%s: can't get iobase size\n", fdc->sc_dev.dv_xname); 123 return; 124 } 125 126 switch (size) { 127 128 /* Easy case. This matches right up with what the fdc code expects. */ 129 case 4: 130 fdc->sc_ioh = pdc->sc_baseioh; 131 break; 132 133 /* Map a subregion so this all lines up with the fdc code. */ 134 case 6: 135 if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4, 136 &fdc->sc_ioh)) { 137 printf("%s: unable to subregion I/O space\n", 138 fdc->sc_dev.dv_xname); 139 return; 140 } 141 break; 142 default: 143 printf ("%s: unknown size: %d of io mapping\n", 144 fdc->sc_dev.dv_xname, size); 145 return; 146 } 147 148 /* 149 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 150 * omitting the controller I/O port. (One has to exist for there to 151 * be a working fdc). Just try and force the mapping in. 152 */ 153 154 if (aa->resc->numio == 1) { 155 156 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) { 157 printf ("%s: can't get iobase\n", 158 fdc->sc_dev.dv_xname); 159 return; 160 } 161 if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0, 162 &fdc->sc_fdctlioh)) { 163 printf("%s: unable to force map CTL I/O space\n", 164 fdc->sc_dev.dv_xname); 165 return; 166 } 167 } else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot, 168 &fdc->sc_fdctlioh)) { 169 printf("%s: unable to map CTL I/O space\n", 170 fdc->sc_dev.dv_xname); 171 return; 172 } 173 174 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) { 175 printf("%s: unable to get DMA channel\n", 176 fdc->sc_dev.dv_xname); 177 return; 178 } 179 180 pnpbios_print_devres(self, aa); 181 if (aa->resc->numio == 1) 182 printf("%s: ctl io %x didn't probe. Forced attach\n", 183 fdc->sc_dev.dv_xname, base + size + 1); 184 185 fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO, 186 fdcintr, fdc); 187 188 fdcattach(fdc); 189 } 190
Indexes created Sun Oct 26 17:10:13 GMT 2025