1 /*- 2 * Copyright (c) 1998 - 2006 S�ren Schmidt <sos@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification, immediately at the beginning of the file. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 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, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/ata/atapi-fd.c,v 1.109 2006/03/30 05:29:57 marcel Exp $ 27 * $DragonFly: src/sys/dev/disk/nata/atapi-fd.c,v 1.5 2008/08/30 02:56:11 dillon Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/bio.h> 32 #include <sys/buf.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/device.h> 36 #include <sys/devicestat.h> 37 #include <sys/disk.h> 38 #include <sys/endian.h> 39 #include <sys/kernel.h> 40 #include <sys/libkern.h> 41 #include <sys/malloc.h> 42 #include <sys/module.h> 43 #include <sys/nata.h> 44 #include <sys/systm.h> 45 #include <sys/udev.h> 46 47 #include "ata-all.h" 48 #include "atapi-fd.h" 49 #include "ata_if.h" 50 51 /* device structure */ 52 static d_open_t afd_open; 53 static d_close_t afd_close; 54 static d_ioctl_t afd_ioctl; 55 static d_strategy_t afd_strategy; 56 static struct dev_ops afd_ops = { 57 { "afd", 118, D_DISK | D_TRACKCLOSE }, 58 .d_open = afd_open, 59 .d_close = afd_close, 60 .d_read = physread, 61 .d_write = physwrite, 62 .d_ioctl = afd_ioctl, 63 .d_strategy = afd_strategy, 64 }; 65 66 /* prototypes */ 67 static int afd_sense(device_t); 68 static void afd_describe(device_t); 69 static void afd_done(struct ata_request *); 70 static int afd_prevent_allow(device_t, int); 71 static int afd_test_ready(device_t); 72 73 /* internal vars */ 74 static MALLOC_DEFINE(M_AFD, "afd_driver", "ATAPI floppy driver buffers"); 75 76 static int 77 afd_probe(device_t dev) 78 { 79 struct ata_device *atadev = device_get_softc(dev); 80 if ((atadev->param.config & ATA_PROTO_ATAPI) && 81 (atadev->param.config & ATA_ATAPI_TYPE_MASK) == ATA_ATAPI_TYPE_DIRECT) 82 return 0; 83 else 84 return ENXIO; 85 } 86 87 static int 88 afd_attach(device_t dev) 89 { 90 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 91 struct ata_device *atadev = device_get_softc(dev); 92 struct afd_softc *fdp; 93 cdev_t cdev; 94 95 fdp = kmalloc(sizeof(struct afd_softc), M_AFD, M_WAITOK | M_ZERO); 96 device_set_ivars(dev, fdp); 97 ATA_SETMODE(device_get_parent(dev), dev); 98 99 if (afd_sense(dev)) { 100 device_set_ivars(dev, NULL); 101 kfree(fdp, M_AFD); 102 return ENXIO; 103 } 104 atadev->flags |= ATA_D_MEDIA_CHANGED; 105 106 /* create the disk device */ 107 devstat_add_entry(&fdp->stats, "afd", device_get_unit(dev), DEV_BSIZE, 108 DEVSTAT_NO_ORDERED_TAGS, DEVSTAT_TYPE_DIRECT | 109 DEVSTAT_TYPE_IF_IDE, DEVSTAT_PRIORITY_WFD); 110 cdev = disk_create(device_get_unit(dev), &fdp->disk, &afd_ops); 111 disk_setdisktype(&fdp->disk, "floppy"); 112 cdev->si_drv1 = dev; 113 if (ch->dma) 114 cdev->si_iosize_max = ch->dma->max_iosize; 115 else 116 cdev->si_iosize_max = DFLTPHYS; 117 fdp->cdev = cdev; 118 119 /* announce we are here */ 120 afd_describe(dev); 121 return 0; 122 } 123 124 static int 125 afd_detach(device_t dev) 126 { 127 struct afd_softc *fdp = device_get_ivars(dev); 128 129 /* check that we have a valid device to detach */ 130 if (!device_get_ivars(dev)) 131 return ENXIO; 132 133 /* detroy disk from the system so we dont get any further requests */ 134 disk_invalidate(&fdp->disk); 135 disk_destroy(&fdp->disk); 136 137 /* fail requests on the queue and any thats "in flight" for this device */ 138 ata_fail_requests(dev); 139 140 /* dont leave anything behind */ 141 /* disk_destroy() already took care of the dev_ops */ 142 devstat_remove_entry(&fdp->stats); 143 device_set_ivars(dev, NULL); 144 kfree(fdp, M_AFD); 145 return 0; 146 } 147 148 static void 149 afd_shutdown(device_t dev) 150 { 151 struct ata_device *atadev = device_get_softc(dev); 152 153 if (atadev->param.support.command2 & ATA_SUPPORT_FLUSHCACHE) 154 ata_controlcmd(dev, ATA_FLUSHCACHE, 0, 0, 0); 155 } 156 157 static int 158 afd_reinit(device_t dev) 159 { 160 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 161 struct ata_device *atadev = device_get_softc(dev); 162 struct afd_softc *fdp = device_get_ivars(dev); 163 164 if (((atadev->unit == ATA_MASTER) && !(ch->devices & ATA_ATAPI_MASTER)) || 165 ((atadev->unit == ATA_SLAVE) && !(ch->devices & ATA_ATAPI_SLAVE))) { 166 device_set_ivars(dev, NULL); 167 kfree(fdp, M_AFD); 168 return 1; 169 } 170 ATA_SETMODE(device_get_parent(dev), dev); 171 return 0; 172 } 173 174 static int 175 afd_open(struct dev_open_args *ap) 176 { 177 device_t dev = ap->a_head.a_dev->si_drv1; 178 struct ata_device *atadev = device_get_softc(dev); 179 struct afd_softc *fdp = device_get_ivars(dev); 180 struct disk_info info; 181 182 if (!fdp) 183 return ENXIO; 184 if (!device_is_attached(dev)) 185 return EBUSY; 186 187 afd_test_ready(dev); 188 afd_prevent_allow(dev, 1); 189 190 if (afd_sense(dev)) 191 device_printf(dev, "sense media type failed\n"); 192 atadev->flags &= ~ATA_D_MEDIA_CHANGED; 193 194 if (!fdp->mediasize) 195 return ENXIO; 196 197 bzero(&info, sizeof(info)); 198 info.d_media_blksize = fdp->sectorsize; /* mandatory */ 199 info.d_media_size = fdp->mediasize; /* (this is in bytes) */ 200 201 info.d_secpertrack = fdp->sectors; /* optional */ 202 info.d_nheads = fdp->heads; 203 info.d_ncylinders = 204 ((fdp->mediasize/fdp->sectorsize)/fdp->sectors)/fdp->heads; 205 info.d_secpercyl = fdp->sectors * fdp->heads; 206 207 disk_setdiskinfo(&fdp->disk, &info); 208 return 0; 209 } 210 211 static int 212 afd_close(struct dev_close_args *ap) 213 { 214 device_t dev = ap->a_head.a_dev->si_drv1; 215 struct afd_softc *fdp = device_get_ivars(dev); 216 217 if (count_dev(fdp->cdev) == 1) 218 afd_prevent_allow(dev, 0); 219 return 0; 220 } 221 222 static int 223 afd_ioctl(struct dev_ioctl_args *ap) 224 { 225 return ata_device_ioctl(ap->a_head.a_dev->si_drv1, ap->a_cmd, ap->a_data); 226 } 227 228 static int 229 afd_strategy(struct dev_strategy_args *ap) 230 { 231 device_t dev = ap->a_head.a_dev->si_drv1; 232 struct bio *bp = ap->a_bio; 233 struct buf *bbp = bp->bio_buf; 234 struct ata_device *atadev = device_get_softc(dev); 235 struct afd_softc *fdp = device_get_ivars(dev); 236 struct ata_request *request; 237 u_int32_t lba; 238 u_int16_t count; 239 int8_t ccb[16]; 240 241 /* if it's a null transfer, return immediatly. */ 242 if (bbp->b_bcount == 0) { 243 bbp->b_resid = 0; 244 biodone(bp); 245 return 0; 246 } 247 248 /* should reject all queued entries if media have changed. */ 249 if (atadev->flags & ATA_D_MEDIA_CHANGED) { 250 bbp->b_flags |= B_ERROR; 251 bbp->b_error = EIO; 252 biodone(bp); 253 return 0; 254 } 255 256 lba = bp->bio_offset / fdp->sectorsize; 257 count = bbp->b_bcount / fdp->sectorsize; 258 bbp->b_resid = bbp->b_bcount; 259 260 bzero(ccb, sizeof(ccb)); 261 262 switch(bbp->b_cmd) { 263 case BUF_CMD_READ: 264 ccb[0] = ATAPI_READ_BIG; 265 break; 266 case BUF_CMD_WRITE: 267 ccb[0] = ATAPI_WRITE_BIG; 268 break; 269 default: 270 device_printf(dev, "unknown BUF operation\n"); 271 bbp->b_flags |= B_ERROR; 272 bbp->b_error = EIO; 273 biodone(bp); 274 return 0; 275 } 276 277 ccb[2] = lba >> 24; 278 ccb[3] = lba >> 16; 279 ccb[4] = lba >> 8; 280 ccb[5] = lba; 281 ccb[7] = count>>8; 282 ccb[8] = count; 283 284 if (!(request = ata_alloc_request())) { 285 bbp->b_flags |= B_ERROR; 286 bbp->b_error = ENOMEM; 287 biodone(bp); 288 return 0; 289 } 290 request->dev = dev; 291 request->bio = bp; 292 bcopy(ccb, request->u.atapi.ccb, 293 (atadev->param.config & ATA_PROTO_MASK) == 294 ATA_PROTO_ATAPI_12 ? 16 : 12); 295 request->data = bbp->b_data; 296 request->bytecount = count * fdp->sectorsize; 297 request->transfersize = min(request->bytecount, 65534); 298 request->timeout = (ccb[0] == ATAPI_WRITE_BIG) ? 60 : 30; 299 request->retries = 2; 300 request->callback = afd_done; 301 302 switch (bbp->b_cmd) { 303 case BUF_CMD_READ: 304 request->flags = (ATA_R_ATAPI | ATA_R_READ); 305 break; 306 case BUF_CMD_WRITE: 307 request->flags = (ATA_R_ATAPI | ATA_R_WRITE); 308 break; 309 default: 310 panic("bbp->b_cmd"); 311 } 312 if (atadev->mode >= ATA_DMA) 313 request->flags |= ATA_R_DMA; 314 request->flags |= ATA_R_ORDERED; 315 devstat_start_transaction(&fdp->stats); 316 ata_queue_request(request); 317 return 0; 318 } 319 320 static void 321 afd_done(struct ata_request *request) 322 { 323 struct afd_softc *fdp = device_get_ivars(request->dev); 324 struct bio *bp = request->bio; 325 struct buf *bbp = bp->bio_buf; 326 327 /* finish up transfer */ 328 if ((bbp->b_error = request->result)) 329 bbp->b_flags |= B_ERROR; 330 bbp->b_resid = bbp->b_bcount - request->donecount; 331 devstat_end_transaction_buf(&fdp->stats, bbp); 332 biodone(bp); 333 ata_free_request(request); 334 } 335 336 static int 337 afd_sense(device_t dev) 338 { 339 struct ata_device *atadev = device_get_softc(dev); 340 struct afd_softc *fdp = device_get_ivars(dev); 341 struct afd_capacity capacity; 342 struct afd_capacity_big capacity_big; 343 struct afd_capabilities capabilities; 344 int8_t ccb1[16] = { ATAPI_READ_CAPACITY, 0, 0, 0, 0, 0, 0, 0, 345 0, 0, 0, 0, 0, 0, 0, 0 }; 346 int8_t ccb2[16] = { ATAPI_READ_CAPACITY_16, 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 347 0, 0, 0, sizeof(struct afd_capacity_big) & 0xff, 0, 0 }; 348 int8_t ccb3[16] = { ATAPI_MODE_SENSE_BIG, 0, ATAPI_REWRITEABLE_CAP_PAGE, 349 0, 0, 0, 0, sizeof(struct afd_capabilities) >> 8, 350 sizeof(struct afd_capabilities) & 0xff, 351 0, 0, 0, 0, 0, 0, 0 }; 352 int timeout = 20; 353 int error, count; 354 355 fdp->mediasize = 0; 356 357 /* wait for device to get ready */ 358 while ((error = afd_test_ready(dev)) && timeout--) { 359 DELAY(100000); 360 } 361 if (error == EBUSY) 362 return 1; 363 364 /* The IOMEGA Clik! doesn't support reading the cap page, fake it */ 365 if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12)) { 366 fdp->heads = 1; 367 fdp->sectors = 2; 368 fdp->mediasize = 39441 * 1024; 369 fdp->sectorsize = 512; 370 afd_test_ready(dev); 371 return 0; 372 } 373 374 /* get drive capacity */ 375 if (!ata_atapicmd(dev, ccb1, (caddr_t)&capacity, 376 sizeof(struct afd_capacity), ATA_R_READ, 30)) { 377 fdp->heads = 16; 378 fdp->sectors = 63; 379 fdp->sectorsize = be32toh(capacity.blocksize); 380 fdp->mediasize = (u_int64_t)be32toh(capacity.capacity)*fdp->sectorsize; 381 afd_test_ready(dev); 382 return 0; 383 } 384 385 /* get drive capacity big */ 386 if (!ata_atapicmd(dev, ccb2, (caddr_t)&capacity_big, 387 sizeof(struct afd_capacity_big), 388 ATA_R_READ | ATA_R_QUIET, 30)) { 389 fdp->heads = 16; 390 fdp->sectors = 63; 391 fdp->sectorsize = be32toh(capacity_big.blocksize); 392 fdp->mediasize = be64toh(capacity_big.capacity)*fdp->sectorsize; 393 afd_test_ready(dev); 394 return 0; 395 } 396 397 /* get drive capabilities, some bugridden drives needs this repeated */ 398 for (count = 0 ; count < 5 ; count++) { 399 if (!ata_atapicmd(dev, ccb3, (caddr_t)&capabilities, 400 sizeof(struct afd_capabilities), ATA_R_READ, 30) && 401 capabilities.page_code == ATAPI_REWRITEABLE_CAP_PAGE) { 402 fdp->heads = capabilities.heads; 403 fdp->sectors = capabilities.sectors; 404 fdp->sectorsize = be16toh(capabilities.sector_size); 405 fdp->mediasize = be16toh(capabilities.cylinders) * 406 fdp->heads * fdp->sectors * fdp->sectorsize; 407 if (!capabilities.medium_type) 408 fdp->mediasize = 0; 409 return 0; 410 } 411 } 412 return 1; 413 } 414 415 static int 416 afd_prevent_allow(device_t dev, int lock) 417 { 418 struct ata_device *atadev = device_get_softc(dev); 419 int8_t ccb[16] = { ATAPI_PREVENT_ALLOW, 0, 0, 0, lock, 420 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 421 422 if (!strncmp(atadev->param.model, "IOMEGA Clik!", 12)) 423 return 0; 424 return ata_atapicmd(dev, ccb, NULL, 0, 0, 30); 425 } 426 427 static int 428 afd_test_ready(device_t dev) 429 { 430 int8_t ccb[16] = { ATAPI_TEST_UNIT_READY, 0, 0, 0, 0, 431 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; 432 433 return ata_atapicmd(dev, ccb, NULL, 0, 0, 30); 434 } 435 436 static void 437 afd_describe(device_t dev) 438 { 439 struct ata_channel *ch = device_get_softc(device_get_parent(dev)); 440 struct ata_device *atadev = device_get_softc(dev); 441 struct afd_softc *fdp = device_get_ivars(dev); 442 char sizestring[16]; 443 444 if (fdp->mediasize > 1048576 * 5) 445 ksprintf(sizestring, "%lluMB", (unsigned long long) 446 (fdp->mediasize / 1048576)); 447 else if (fdp->mediasize) 448 ksprintf(sizestring, "%lluKB", (unsigned long long) 449 (fdp->mediasize / 1024)); 450 else 451 strcpy(sizestring, "(no media)"); 452 453 device_printf(dev, "%s <%.40s %.8s> at ata%d-%s %s\n", 454 sizestring, atadev->param.model, atadev->param.revision, 455 device_get_unit(ch->dev), 456 (atadev->unit == ATA_MASTER) ? "master" : "slave", 457 ata_mode2str(atadev->mode)); 458 if (bootverbose) { 459 device_printf(dev, "%llu sectors [%lluC/%dH/%dS]\n", 460 (unsigned long long)(fdp->mediasize / fdp->sectorsize), 461 (unsigned long long) 462 (fdp->mediasize/(fdp->sectorsize*fdp->sectors*fdp->heads)), 463 fdp->heads, fdp->sectors); 464 } 465 } 466 467 static device_method_t afd_methods[] = { 468 /* device interface */ 469 DEVMETHOD(device_probe, afd_probe), 470 DEVMETHOD(device_attach, afd_attach), 471 DEVMETHOD(device_detach, afd_detach), 472 DEVMETHOD(device_shutdown, afd_shutdown), 473 474 /* ATA methods */ 475 DEVMETHOD(ata_reinit, afd_reinit), 476 477 { 0, 0 } 478 }; 479 480 static driver_t afd_driver = { 481 "afd", 482 afd_methods, 483 0, 484 }; 485 486 static devclass_t afd_devclass; 487 488 DRIVER_MODULE(afd, ata, afd_driver, afd_devclass, NULL, NULL); 489 MODULE_VERSION(afd, 1); 490 MODULE_DEPEND(afd, ata, 1, 1, 1); 491