fdc_pnpbios.c revision 1.2.6.2
1 /* $NetBSD: fdc_pnpbios.c,v 1.2.6.2 2002/10/10 18:33:36 jdolecek 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 1.2.6.2 2002/10/10 18:33:36 jdolecek 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 CFATTACH_DECL(fdc_pnpbios, sizeof(struct fdc_pnpbios_softc), 79 fdc_pnpbios_match, fdc_pnpbios_attach, NULL, NULL); 80 81 int 82 fdc_pnpbios_match(struct device *parent, 83 struct cfdata *match, 84 void *aux) 85 { 86 struct pnpbiosdev_attach_args *aa = aux; 87 88 if (strcmp(aa->idstr, "PNP0700") == 0) 89 return (1); 90 91 return (0); 92 } 93 94 void 95 fdc_pnpbios_attach(struct device *parent, 96 struct device *self, 97 void *aux) 98 { 99 struct fdc_softc *fdc = (void *) self; 100 struct fdc_pnpbios_softc *pdc = (void *) self; 101 struct pnpbiosdev_attach_args *aa = aux; 102 int size, base; 103 104 printf("\n"); 105 106 fdc->sc_ic = aa->ic; 107 108 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot, 109 &pdc->sc_baseioh)) { 110 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 111 return; 112 } 113 114 /* 115 * Start accounting for "odd" pnpbios's. Some probe as 4 ports, 116 * some as 6 and some don't give the ctl port back. 117 */ 118 119 if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) { 120 printf("%s: can't get iobase size\n", fdc->sc_dev.dv_xname); 121 return; 122 } 123 124 switch (size) { 125 126 /* Easy case. This matches right up with what the fdc code expects. */ 127 case 4: 128 fdc->sc_ioh = pdc->sc_baseioh; 129 break; 130 131 /* Map a subregion so this all lines up with the fdc code. */ 132 case 6: 133 if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4, 134 &fdc->sc_ioh)) { 135 printf("%s: unable to subregion I/O space\n", 136 fdc->sc_dev.dv_xname); 137 return; 138 } 139 break; 140 default: 141 printf ("%s: unknown size: %d of io mapping\n", 142 fdc->sc_dev.dv_xname, size); 143 return; 144 } 145 146 /* 147 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 148 * omitting the controller I/O port. (One has to exist for there to 149 * be a working fdc). Just try and force the mapping in. 150 */ 151 152 if (aa->resc->numio == 1) { 153 154 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) { 155 printf ("%s: can't get iobase\n", 156 fdc->sc_dev.dv_xname); 157 return; 158 } 159 if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0, 160 &fdc->sc_fdctlioh)) { 161 printf("%s: unable to force map CTL I/O space\n", 162 fdc->sc_dev.dv_xname); 163 return; 164 } 165 } else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot, 166 &fdc->sc_fdctlioh)) { 167 printf("%s: unable to map CTL I/O space\n", 168 fdc->sc_dev.dv_xname); 169 return; 170 } 171 172 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) { 173 printf("%s: unable to get DMA channel\n", 174 fdc->sc_dev.dv_xname); 175 return; 176 } 177 178 pnpbios_print_devres(self, aa); 179 if (aa->resc->numio == 1) 180 printf("%s: ctl io %x didn't probe. Forced attach\n", 181 fdc->sc_dev.dv_xname, base + size + 1); 182 183 fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO, 184 fdcintr, fdc); 185 186 fdcattach(fdc); 187 } 188
Indexes created Sat Oct 25 10:09:55 GMT 2025