fdc_acpi.c revision 1.15
1 /* $NetBSD: fdc_acpi.c,v 1.15 2003/11/03 06:03:47 kochi 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 1.15 2003/11/03 06:03:47 kochi 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 #include <sys/disk.h> 45 #if NRND > 0 46 #include <sys/rnd.h> 47 #endif 48 49 #include <machine/bus.h> 50 #include <machine/intr.h> 51 52 #include <dev/isa/isavar.h> 53 #include <dev/isa/isadmavar.h> 54 55 #include <dev/acpi/acpica.h> 56 #include <dev/acpi/acpireg.h> 57 #include <dev/acpi/acpivar.h> 58 59 #include <dev/isa/fdcvar.h> 60 #include <dev/isa/fdvar.h> 61 #include <dev/isa/fdreg.h> 62 63 #include <dev/acpi/fdc_acpireg.h> 64 65 int fdc_acpi_match(struct device *, struct cfdata *, void *); 66 void fdc_acpi_attach(struct device *, struct device *, void *); 67 68 struct fdc_acpi_softc { 69 struct fdc_softc sc_fdc; 70 bus_space_handle_t sc_baseioh; 71 struct acpi_devnode *sc_node; /* ACPI devnode */ 72 struct acpi_resources res; 73 }; 74 75 static int fdc_acpi_enumerate(struct fdc_acpi_softc *); 76 static void fdc_acpi_getknownfds(struct fdc_acpi_softc *); 77 78 static const struct fd_type *fdc_acpi_nvtotype(char *, int, int); 79 80 CFATTACH_DECL(fdc_acpi, sizeof(struct fdc_acpi_softc), fdc_acpi_match, 81 fdc_acpi_attach, NULL, NULL); 82 83 /* 84 * Supported device IDs 85 */ 86 87 static const char * const fdc_acpi_ids[] = { 88 "PNP0700", /* PC standard floppy disk controller */ 89 #if 0 /* XXX do we support this? */ 90 "PNP0701", /* Standard floppy controller for MS Device Bay Spec */ 91 #endif 92 NULL 93 }; 94 95 /* 96 * fdc_acpi_match: autoconf(9) match routine 97 */ 98 int 99 fdc_acpi_match(struct device *parent, struct cfdata *match, void *aux) 100 { 101 struct acpi_attach_args *aa = aux; 102 103 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 104 return 0; 105 106 return acpi_match_hid(aa->aa_node->ad_devinfo, fdc_acpi_ids); 107 } 108 109 /* 110 * fdc_acpi_attach: autoconf(9) attach routine 111 */ 112 void 113 fdc_acpi_attach(struct device *parent, struct device *self, void *aux) 114 { 115 struct fdc_acpi_softc *asc = (struct fdc_acpi_softc *)self; 116 struct fdc_softc *sc = &asc->sc_fdc; 117 struct acpi_attach_args *aa = aux; 118 struct acpi_io *io, *ctlio; 119 struct acpi_irq *irq; 120 struct acpi_drq *drq; 121 ACPI_STATUS rv; 122 123 printf("\n"); 124 125 sc->sc_ic = aa->aa_ic; 126 asc->sc_node = aa->aa_node; 127 128 /* parse resources */ 129 rv = acpi_resource_parse(&sc->sc_dev, aa->aa_node, &asc->res, 130 &acpi_resource_parse_ops_default); 131 if (rv != AE_OK) { 132 printf("%s: unable to parse resources\n", sc->sc_dev.dv_xname); 133 return; 134 } 135 136 /* find our i/o registers */ 137 io = acpi_res_io(&asc->res, 0); 138 if (io == NULL) { 139 printf("%s: unable to find i/o register resource\n", 140 sc->sc_dev.dv_xname); 141 return; 142 } 143 144 /* find our IRQ */ 145 irq = acpi_res_irq(&asc->res, 0); 146 if (irq == NULL) { 147 printf("%s: unable to find irq resource\n", 148 sc->sc_dev.dv_xname); 149 return; 150 } 151 152 /* find our DRQ */ 153 drq = acpi_res_drq(&asc->res, 0); 154 if (drq == NULL) { 155 printf("%s: unable to find drq resource\n", 156 sc->sc_dev.dv_xname); 157 return; 158 } 159 sc->sc_drq = drq->ar_drq; 160 161 sc->sc_iot = aa->aa_iot; 162 if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length, 163 0, &asc->sc_baseioh)) { 164 printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname); 165 return; 166 } 167 168 switch (io->ar_length) { 169 case 4: 170 sc->sc_ioh = asc->sc_baseioh; 171 break; 172 case 6: 173 if (bus_space_subregion(sc->sc_iot, asc->sc_baseioh, 2, 4, 174 &sc->sc_ioh)) { 175 printf("%s: unable to subregion i/o space\n", 176 sc->sc_dev.dv_xname); 177 return; 178 } 179 break; 180 default: 181 printf("%s: unknown size: %d of io mapping\n", 182 sc->sc_dev.dv_xname, io->ar_length); 183 return; 184 } 185 186 /* 187 * omitting the controller I/O port. (One has to exist for there to 188 * be a working fdc). Just try and force the mapping in. 189 */ 190 ctlio = acpi_res_io(&asc->res, 1); 191 if (ctlio == NULL) { 192 if (bus_space_map(sc->sc_iot, io->ar_base + io->ar_length + 1, 193 1, 0, &sc->sc_fdctlioh)) { 194 printf("%s: unable to force map ctl i/o space\n", 195 sc->sc_dev.dv_xname); 196 return; 197 } 198 printf("%s: ctl io %x did't probe. Forced attach\n", 199 sc->sc_dev.dv_xname, io->ar_base + io->ar_length + 1); 200 } else { 201 if (bus_space_map(sc->sc_iot, ctlio->ar_base, ctlio->ar_length, 202 0, &sc->sc_fdctlioh)) { 203 printf("%s: unable to map ctl i/o space\n", 204 sc->sc_dev.dv_xname); 205 return; 206 } 207 } 208 209 sc->sc_ih = isa_intr_establish(aa->aa_ic, irq->ar_irq, 210 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 211 IPL_BIO, fdcintr, sc); 212 213 /* Setup direct configuration of floppy drives */ 214 sc->sc_present = fdc_acpi_enumerate(asc); 215 if (sc->sc_present >= 0) { 216 sc->sc_known = 1; 217 fdc_acpi_getknownfds(asc); 218 } else { 219 /* 220 * XXX if there is no _FDE control method, attempt to 221 * probe without pnp 222 */ 223 #ifdef ACPI_FDC_DEBUG 224 printf("%s: unable to enumerate, attempting normal probe\n", 225 sc->sc_dev.dv_xname); 226 #endif 227 } 228 229 fdcattach(sc); 230 } 231 232 static int 233 fdc_acpi_enumerate(struct fdc_acpi_softc *asc) 234 { 235 struct fdc_softc *sc = &asc->sc_fdc; 236 ACPI_OBJECT *fde; 237 ACPI_BUFFER buf; 238 ACPI_STATUS rv; 239 UINT32 *p; 240 int i, drives = -1; 241 242 rv = acpi_eval_struct(asc->sc_node->ad_handle, "_FDE", &buf); 243 if (rv != AE_OK) { 244 #ifdef ACPI_FDC_DEBUG 245 printf("%s: failed to evaluate _FDE: %x\n", 246 sc->sc_dev.dv_xname, rv); 247 #endif 248 return drives; 249 } 250 fde = (ACPI_OBJECT *)buf.Pointer; 251 if (fde->Type != ACPI_TYPE_BUFFER) { 252 printf("%s: expected BUFFER, got %d\n", sc->sc_dev.dv_xname, 253 fde->Type); 254 goto out; 255 } 256 if (fde->Buffer.Length < 5 * sizeof(UINT32)) { 257 printf("%s: expected buffer len of %lu, got %d\n", 258 sc->sc_dev.dv_xname, 259 (unsigned long)(5 * sizeof(UINT32)), fde->Buffer.Length); 260 goto out; 261 } 262 263 p = (UINT32 *) fde->Buffer.Pointer; 264 265 /* 266 * Indexes 0 through 3 are each UINT32 booleans. True if a drive 267 * is present. 268 */ 269 drives = 0; 270 for (i = 0; i < 4; i++) { 271 if (p[i]) drives |= (1 << i); 272 #ifdef ACPI_FDC_DEBUG 273 printf("%s: drive %d %sattached\n", sc->sc_dev.dv_xname, i, 274 p[i] ? "" : "not "); 275 #endif 276 } 277 278 /* 279 * p[4] reports tape presence. Possible values: 280 * 0 - Unknown if device is present 281 * 1 - Device is present 282 * 2 - Device is never present 283 * >2 - Reserved 284 * 285 * we don't currently use this. 286 */ 287 288 out: 289 AcpiOsFree(buf.Pointer); 290 return drives; 291 } 292 293 static void 294 fdc_acpi_getknownfds(struct fdc_acpi_softc *asc) 295 { 296 struct fdc_softc *sc = &asc->sc_fdc; 297 ACPI_OBJECT *fdi, *e; 298 ACPI_BUFFER buf; 299 ACPI_STATUS rv; 300 int i; 301 302 for (i = 0; i < 4; i++) { 303 if ((sc->sc_present & (1 << i)) == 0) 304 continue; 305 rv = acpi_eval_struct(asc->sc_node->ad_handle, "_FDI", &buf); 306 if (rv != AE_OK) { 307 #ifdef ACPI_FDC_DEBUG 308 printf("%s: failed to evaluate _FDI: %x on drive %d\n", 309 sc->sc_dev.dv_xname, rv, i); 310 #endif 311 /* XXX if _FDI fails, assume 1.44MB floppy */ 312 sc->sc_knownfds[i] = &fdc_acpi_fdtypes[0]; 313 continue; 314 } 315 fdi = (ACPI_OBJECT *)buf.Pointer; 316 if (fdi->Type != ACPI_TYPE_PACKAGE) { 317 printf("%s: expected PACKAGE, got %d\n", 318 sc->sc_dev.dv_xname, fdi->Type); 319 goto out; 320 } 321 e = fdi->Package.Elements; 322 sc->sc_knownfds[i] = fdc_acpi_nvtotype(sc->sc_dev.dv_xname, 323 e[1].Integer.Value, e[0].Integer.Value); 324 325 /* if fdc_acpi_nvtotype returns NULL, don't attach drive */ 326 if (!sc->sc_knownfds[i]) 327 sc->sc_present &= ~(1 << i); 328 329 out: 330 AcpiOsFree(buf.Pointer); 331 } 332 } 333 334 static const struct fd_type * 335 fdc_acpi_nvtotype(char *fdc, int nvraminfo, int drive) 336 { 337 int type; 338 339 type = (drive == 0 ? nvraminfo : nvraminfo << 4) & 0xf0; 340 switch (type) { 341 case ACPI_FDC_DISKETTE_NONE: 342 return NULL; 343 case ACPI_FDC_DISKETTE_12M: 344 return &fdc_acpi_fdtypes[1]; 345 case ACPI_FDC_DISKETTE_TYPE5: 346 case ACPI_FDC_DISKETTE_TYPE6: 347 case ACPI_FDC_DISKETTE_144M: 348 return &fdc_acpi_fdtypes[0]; 349 case ACPI_FDC_DISKETTE_360K: 350 return &fdc_acpi_fdtypes[3]; 351 case ACPI_FDC_DISKETTE_720K: 352 return &fdc_acpi_fdtypes[4]; 353 default: 354 #ifdef ACPI_FDC_DEBUG 355 printf("%s: drive %d: unknown device type 0x%x\n", 356 fdc, drive, type); 357 #endif 358 return NULL; 359 } 360 } 361
Indexes created Thu Oct 02 14:10:14 GMT 2025