1 /* $NetBSD: fdc_pnpbios.c,v 1.2 2000/12/17 07:58:37 jmc 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 "rnd.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/callout.h> 48 #include <sys/device.h> 49 #include <sys/buf.h> 50 #include <sys/queue.h> 51 #if NRND > 0 52 #include <sys/rnd.h> 53 #endif 54 55 #include <machine/bus.h> 56 #include <machine/intr.h> 57 58 #include <dev/isa/isavar.h> 59 #include <dev/isa/isadmavar.h> 60 61 #include <dev/isa/fdcvar.h> 62 63 #include <i386/pnpbios/pnpbiosvar.h> 64 65 int fdc_pnpbios_match(struct device *, struct cfdata *, void *); 66 void fdc_pnpbios_attach(struct device *, struct device *, void *); 67 68 struct fdc_pnpbios_softc { 69 struct fdc_softc sc_fdc; /* base fdc device */ 70 71 bus_space_handle_t sc_baseioh; /* base I/O handle */ 72 }; 73 74 75 struct cfattach fdc_pnpbios_ca = { 76 sizeof(struct fdc_pnpbios_softc), fdc_pnpbios_match, 77 fdc_pnpbios_attach, 78 }; 79 80 int 81 fdc_pnpbios_match(struct device *parent, 82 struct cfdata *match, 83 void *aux) 84 { 85 struct pnpbiosdev_attach_args *aa = aux; 86 87 if (strcmp(aa->idstr, "PNP0700") == 0) 88 return (1); 89 90 return (0); 91 } 92 93 void 94 fdc_pnpbios_attach(struct device *parent, 95 struct device *self, 96 void *aux) 97 { 98 struct fdc_softc *fdc = (void *) self; 99 struct fdc_pnpbios_softc *pdc = (void *) self; 100 struct pnpbiosdev_attach_args *aa = aux; 101 int size, base; 102 103 printf("\n"); 104 105 fdc->sc_ic = aa->ic; 106 107 if (pnpbios_io_map(aa->pbt, aa->resc, 0, &fdc->sc_iot, 108 &pdc->sc_baseioh)) { 109 printf("%s: unable to map I/O space\n", fdc->sc_dev.dv_xname); 110 return; 111 } 112 113 /* 114 * Start accounting for "odd" pnpbios's. Some probe as 4 ports, 115 * some as 6 and some don't give the ctl port back. 116 */ 117 118 if (pnpbios_getiosize(aa->pbt, aa->resc, 0, &size)) { 119 printf("%s: can't get iobase size\n", fdc->sc_dev.dv_xname); 120 return; 121 } 122 123 switch (size) { 124 125 /* Easy case. This matches right up with what the fdc code expects. */ 126 case 4: 127 fdc->sc_ioh = pdc->sc_baseioh; 128 break; 129 130 /* Map a subregion so this all lines up with the fdc code. */ 131 case 6: 132 if (bus_space_subregion(fdc->sc_iot, pdc->sc_baseioh, 2, 4, 133 &fdc->sc_ioh)) { 134 printf("%s: unable to subregion I/O space\n", 135 fdc->sc_dev.dv_xname); 136 return; 137 } 138 break; 139 default: 140 printf ("%s: unknown size: %d of io mapping\n", 141 fdc->sc_dev.dv_xname, size); 142 return; 143 } 144 145 /* 146 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 147 * omitting the controller I/O port. (One has to exist for there to 148 * be a working fdc). Just try and force the mapping in. 149 */ 150 151 if (aa->resc->numio == 1) { 152 153 if (pnpbios_getiobase(aa->pbt, aa->resc, 0, 0, &base)) { 154 printf ("%s: can't get iobase\n", 155 fdc->sc_dev.dv_xname); 156 return; 157 } 158 if (bus_space_map(fdc->sc_iot, base + size + 1, 1, 0, 159 &fdc->sc_fdctlioh)) { 160 printf("%s: unable to force map CTL I/O space\n", 161 fdc->sc_dev.dv_xname); 162 return; 163 } 164 } else if (pnpbios_io_map(aa->pbt, aa->resc, 1, &fdc->sc_iot, 165 &fdc->sc_fdctlioh)) { 166 printf("%s: unable to map CTL I/O space\n", 167 fdc->sc_dev.dv_xname); 168 return; 169 } 170 171 if (pnpbios_getdmachan(aa->pbt, aa->resc, 0, &fdc->sc_drq)) { 172 printf("%s: unable to get DMA channel\n", 173 fdc->sc_dev.dv_xname); 174 return; 175 } 176 177 pnpbios_print_devres(self, aa); 178 if (aa->resc->numio == 1) 179 printf("%s: ctl io %x didn't probe. Forced attach\n", 180 fdc->sc_dev.dv_xname, base + size + 1); 181 182 fdc->sc_ih = pnpbios_intr_establish(aa->pbt, aa->resc, 0, IPL_BIO, 183 fdcintr, fdc); 184 185 fdcattach(fdc); 186 } 187