fdc_acpi.c revision 1.1
1 /* $NetBSD: fdc_acpi.c,v 1.1 2002/12/28 19:31:35 jmcneill Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Jared D. McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 20 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 22 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 /* 29 * ACPI attachment for the PC Floppy Controller driver, based on 30 * sys/arch/i386/pnpbios/fdc_pnpbios.c by Jason R. Thorpe 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: fdc_acpi.c,v 1.1 2002/12/28 19:31:35 jmcneill Exp $"); 35 36 #include "rnd.h" 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/callout.h> 41 #include <sys/device.h> 42 #include <sys/buf.h> 43 #include <sys/queue.h> 44 #if NRND > 0 45 #include <sys/rnd.h> 46 #endif 47 48 #include <machine/bus.h> 49 #include <machine/intr.h> 50 51 #include <dev/isa/isavar.h> 52 #include <dev/isa/isadmavar.h> 53 54 #include <dev/acpi/acpica.h> 55 #include <dev/acpi/acpireg.h> 56 #include <dev/acpi/acpivar.h> 57 58 #include <dev/isa/fdcvar.h> 59 60 int fdc_acpi_match(struct device *, struct cfdata *, void *); 61 void fdc_acpi_attach(struct device *, struct device *, void *); 62 63 struct fdc_acpi_softc { 64 struct fdc_softc sc_fdc; 65 bus_space_handle_t sc_baseioh; 66 }; 67 68 CFATTACH_DECL(fdc_acpi, sizeof(struct fdc_acpi_softc), fdc_acpi_match, 69 fdc_acpi_attach, NULL, NULL); 70 71 /* 72 * Supported device IDs 73 */ 74 75 static const char * const fdc_acpi_ids[] = { 76 "PNP0700", /* PC standard floppy disk controller */ 77 #if 0 /* XXX do we support this? */ 78 "PNP0701", /* Standard floppy controller for MS Device Bay Spec */ 79 #endif 80 NULL 81 }; 82 83 /* 84 * fdc_acpi_match: autoconf(9) match routine 85 */ 86 int 87 fdc_acpi_match(struct device *parent, struct cfdata *match, void *aux) 88 { 89 struct acpi_attach_args *aa = aux; 90 const char *id; 91 int i; 92 93 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 94 return 0; 95 96 for (i = 0; (id = fdc_acpi_ids[i]) != NULL; ++i) { 97 if (strcmp(aa->aa_node->ad_devinfo.HardwareId, id) == 0) 98 return 1; 99 } 100 101 /* No matches found */ 102 return 0; 103 } 104 105 /* 106 * fdc_acpi_attach: autoconf(9) attach routine 107 */ 108 void 109 fdc_acpi_attach(struct device *parent, struct device *self, void *aux) 110 { 111 struct fdc_acpi_softc *asc = (struct fdc_acpi_softc *)self; 112 struct fdc_softc *sc = &asc->sc_fdc; 113 struct acpi_attach_args *aa = aux; 114 struct acpi_resources res; 115 struct acpi_io *io, *ctlio; 116 struct acpi_irq *irq; 117 struct acpi_drq *drq; 118 ACPI_STATUS rv; 119 120 printf("\n"); 121 122 sc->sc_ic = aa->aa_ic; 123 124 /* parse resources */ 125 rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node, &res, 126 &acpi_resource_parse_ops_default); 127 if (rv != AE_OK) { 128 printf("%s: unable to parse resources\n", sc->sc_dev.dv_xname); 129 return; 130 } 131 132 /* find our i/o registers */ 133 io = acpi_res_io(&res, 0); 134 if (io == NULL) { 135 printf("%s: unable to find i/o register resource\n", 136 sc->sc_dev.dv_xname); 137 return; 138 } 139 140 /* find our IRQ */ 141 irq = acpi_res_irq(&res, 0); 142 if (irq == NULL) { 143 printf("%s: unable to find irq resource\n", 144 sc->sc_dev.dv_xname); 145 return; 146 } 147 148 /* find our DRQ */ 149 drq = acpi_res_drq(&res, 0); 150 if (drq == NULL) { 151 printf("%s: unable to find drq resource\n", 152 sc->sc_dev.dv_xname); 153 return; 154 } 155 156 sc->sc_iot = aa->aa_iot; 157 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 158 0, &asc->sc_baseioh)) { 159 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 160 return; 161 } 162 163 switch (io->ar_length) { 164 case 4: 165 sc->sc_ioh = asc->sc_baseioh; 166 break; 167 case 6: 168 if (bus_space_subregion(sc->sc_iot, asc->sc_baseioh, 2, 4, 169 &sc->sc_ioh)) { 170 printf("%s: unable to subregion i/o space\n", 171 sc->sc_dev.dv_xname); 172 return; 173 } 174 break; 175 default: 176 printf("%s: unknown size: %d of io mapping\n", 177 sc->sc_dev.dv_xname, io->ar_length); 178 return; 179 } 180 181 /* 182 * XXX: This is bad. If the pnpbios claims only 1 I/O range then it's 183 * omitting the controller I/O port. (One has to exist for there to 184 * be a working fdc). Just try and force the mapping in. 185 */ 186 ctlio = acpi_res_io(&res, 1); 187 if (ctlio == NULL) { 188 if (bus_space_map(sc->sc_iot, io->ar_base + io->ar_length + 1, 189 1, 0, &sc->sc_fdctlioh)) { 190 printf("%s: unable to force map ctl i/o space\n", 191 sc->sc_dev.dv_xname); 192 return; 193 } 194 printf("%s: ctl io %x did't probe. Forced attach\n", 195 sc->sc_dev.dv_xname, io->ar_base + io->ar_length + 1); 196 } else { 197 if (bus_space_map(sc->sc_iot, ctlio->ar_base, ctlio->ar_length, 198 0, &sc->sc_fdctlioh)) { 199 printf("%s: unable to map ctl i/o space\n", 200 sc->sc_dev.dv_xname); 201 return; 202 } 203 } 204 205 sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 0, 206 IPL_BIO, fdcintr, sc); 207 208 fdcattach(sc); 209 } 210
Indexes created Tue Sep 23 14:10:03 GMT 2025