fdc_pnpbios.c revision 1.11.52.1
1 /* $NetBSD: fdc_pnpbios.c,v 1.11.52.1 2008/04/03 12:42:19 mjf 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 1.11.52.1 2008/04/03 12:42:19 mjf 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(device_t, cfdata_t, void *); 69 void fdc_pnpbios_attach(device_t, device_t, 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_NEW(fdc_pnpbios, sizeof(struct fdc_pnpbios_softc), 79 fdc_pnpbios_match, fdc_pnpbios_attach, NULL, NULL); 80 81 int 82 fdc_pnpbios_match(device_t parent, cfdata_t match, void *aux) 83 { 84 struct pnpbiosdev_attach_args *aa = aux; 85 86 if (strcmp(aa->idstr, "PNP0700") == 0) 87 return (1); 88 89 return (0); 90 } 91 92 void 93 fdc_pnpbios_attach(device_t parent, device_t self, void *aux) 94 { 95 struct fdc_pnpbios_softc *pdc = device_private(self); 96 struct fdc_softc *fdc = &pdc->sc_fdc; 97 struct pnpbiosdev_attach_args *aa = aux; 98 int size, base; 99 100 aprint_normal("\n"); 101 102 fdc->sc_ic = aa->ic; 103 104 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot, 105 &pdc->sc_baseioh)) { 106 aprint_error_dev(self, "unable to map I/O space\n"); 107 return; 108 } 109 110 /* 111 * Start accounting for "odd" pnpbios's. Some probe as 4 ports, 112 * some as 6 and some don't give the ctl port back. 113 */ 114 115 if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) { 116 aprint_error_dev(self, "can't get iobase size\n"); 117 return; 118 } 119 120 switch (size) { 121 122 /* Easy case. This matches right up with what the fdc code expects. */ 123 case 4: 124 fdc->sc_ioh = pdc->sc_baseioh; 125 break; 126 127 /* Map a subregion so this all lines up with the fdc code. */ 128 case 6: 129 if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4, 130 &fdc->sc_ioh)) { 131 aprint_error_dev(self, 132 "unable to subregion I/O space\n"); 133 return; 134 } 135 break; 136 default: 137 aprint_error_dev(self, "unknown size: %d of io mapping\n", size); 138 return; 139 } 140 141 /* 142 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 143 * omitting the controller I/O port. (One has to exist for there to 144 * be a working fdc). Just try and force the mapping in. 145 */ 146 147 if (aa->resc->numio == 1) { 148 149 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) { 150 aprint_error_dev(self, "can't get iobase\n"); 151 return; 152 } 153 if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0, 154 &fdc->sc_fdctlioh)) { 155 aprint_error_dev(self, 156 "unable to force map CTL I/O space\n"); 157 return; 158 } 159 } else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot, 160 &fdc->sc_fdctlioh)) { 161 aprint_error_dev(self, "unable to map CTL I/O space\n"); 162 return; 163 } 164 165 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) { 166 aprint_error_dev(self, "unable to get DMA channel\n"); 167 return; 168 } 169 170 pnpbios_print_devres(self, aa); 171 if (aa->resc->numio == 1) 172 aprint_error_dev(self, 173 "ctl io %x didn't probe. Forced attach\n", 174 base + size + 1); 175 176 fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO, 177 fdcintr, fdc); 178 179 fdcattach(fdc); 180 } 181
Indexes created Sat Oct 25 16:10:12 GMT 2025