1 /* $NetBSD: fdc_pnpbios.c,v 1.15 2009/11/25 13:15:17 cube 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * PNPBIOS attachment for the PC Floppy Controller driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: fdc_pnpbios.c,v 1.15 2009/11/25 13:15:17 cube Exp $"); 38 39 #include "rnd.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/callout.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 #include <sys/queue.h> 47 #if NRND > 0 48 #include <sys/rnd.h> 49 #endif 50 51 #include <machine/bus.h> 52 #include <machine/intr.h> 53 54 #include <dev/isa/isavar.h> 55 #include <dev/isa/isadmavar.h> 56 57 #include <dev/isa/fdcvar.h> 58 59 #include <i386/pnpbios/pnpbiosvar.h> 60 61 int fdc_pnpbios_match(device_t, cfdata_t, void *); 62 void fdc_pnpbios_attach(device_t, device_t, void *); 63 64 struct fdc_pnpbios_softc { 65 struct fdc_softc sc_fdc; /* base fdc device */ 66 67 bus_space_handle_t sc_baseioh; /* base I/O handle */ 68 }; 69 70 71 CFATTACH_DECL_NEW(fdc_pnpbios, sizeof(struct fdc_pnpbios_softc), 72 fdc_pnpbios_match, fdc_pnpbios_attach, NULL, NULL); 73 74 int 75 fdc_pnpbios_match(device_t parent, cfdata_t match, void *aux) 76 { 77 struct pnpbiosdev_attach_args *aa = aux; 78 79 if (strcmp(aa->idstr, "PNP0700") == 0) 80 return (1); 81 82 return (0); 83 } 84 85 void 86 fdc_pnpbios_attach(device_t parent, device_t self, void *aux) 87 { 88 struct fdc_pnpbios_softc *pdc = device_private(self); 89 struct fdc_softc *fdc = &pdc->sc_fdc; 90 struct pnpbiosdev_attach_args *aa = aux; 91 int size, base; 92 93 aprint_normal("\n"); 94 95 fdc->sc_dev = self; 96 fdc->sc_ic = aa->ic; 97 98 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot, 99 &pdc->sc_baseioh)) { 100 aprint_error_dev(self, "unable to map I/O space\n"); 101 return; 102 } 103 104 /* 105 * Start accounting for "odd" pnpbios's. Some probe as 4 ports, 106 * some as 6 and some don't give the ctl port back. 107 */ 108 109 if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) { 110 aprint_error_dev(self, "can't get iobase size\n"); 111 return; 112 } 113 114 switch (size) { 115 116 /* Easy case. This matches right up with what the fdc code expects. */ 117 case 4: 118 fdc->sc_ioh = pdc->sc_baseioh; 119 break; 120 121 /* Map a subregion so this all lines up with the fdc code. */ 122 case 6: 123 if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4, 124 &fdc->sc_ioh)) { 125 aprint_error_dev(self, 126 "unable to subregion I/O space\n"); 127 return; 128 } 129 break; 130 default: 131 aprint_error_dev(self, "unknown size: %d of io mapping\n", size); 132 return; 133 } 134 135 /* 136 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 137 * omitting the controller I/O port. (One has to exist for there to 138 * be a working fdc). Just try and force the mapping in. 139 */ 140 141 if (aa->resc->numio == 1) { 142 143 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) { 144 aprint_error_dev(self, "can't get iobase\n"); 145 return; 146 } 147 if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0, 148 &fdc->sc_fdctlioh)) { 149 aprint_error_dev(self, 150 "unable to force map CTL I/O space\n"); 151 return; 152 } 153 } else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot, 154 &fdc->sc_fdctlioh)) { 155 aprint_error_dev(self, "unable to map CTL I/O space\n"); 156 return; 157 } 158 159 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) { 160 aprint_error_dev(self, "unable to get DMA channel\n"); 161 return; 162 } 163 164 pnpbios_print_devres(self, aa); 165 if (aa->resc->numio == 1) 166 aprint_error_dev(self, 167 "ctl io %x didn't probe. Forced attach\n", 168 base + size + 1); 169 170 fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO, 171 fdcintr, fdc); 172 173 fdcattach(fdc); 174 } 175