| 1 | /* $NetBSD: ata.c,v 1.132 2014/09/10 07:04:48 matt Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 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 | |
| 27 | #include <sys/cdefs.h> |
| 28 | __KERNEL_RCSID(0, "$NetBSD: ata.c,v 1.132 2014/09/10 07:04:48 matt Exp $" ); |
| 29 | |
| 30 | #include "opt_ata.h" |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/kernel.h> |
| 35 | #include <sys/malloc.h> |
| 36 | #include <sys/device.h> |
| 37 | #include <sys/conf.h> |
| 38 | #include <sys/fcntl.h> |
| 39 | #include <sys/proc.h> |
| 40 | #include <sys/pool.h> |
| 41 | #include <sys/kthread.h> |
| 42 | #include <sys/errno.h> |
| 43 | #include <sys/ataio.h> |
| 44 | #include <sys/kmem.h> |
| 45 | #include <sys/intr.h> |
| 46 | #include <sys/bus.h> |
| 47 | #include <sys/once.h> |
| 48 | |
| 49 | #include <dev/ata/ataconf.h> |
| 50 | #include <dev/ata/atareg.h> |
| 51 | #include <dev/ata/atavar.h> |
| 52 | #include <dev/ic/wdcvar.h> /* for PIOBM */ |
| 53 | |
| 54 | #include "locators.h" |
| 55 | |
| 56 | #include "atapibus.h" |
| 57 | #include "ataraid.h" |
| 58 | #include "sata_pmp.h" |
| 59 | |
| 60 | #if NATARAID > 0 |
| 61 | #include <dev/ata/ata_raidvar.h> |
| 62 | #endif |
| 63 | #if NSATA_PMP > 0 |
| 64 | #include <dev/ata/satapmpvar.h> |
| 65 | #endif |
| 66 | #include <dev/ata/satapmpreg.h> |
| 67 | |
| 68 | #define DEBUG_FUNCS 0x08 |
| 69 | #define DEBUG_PROBE 0x10 |
| 70 | #define DEBUG_DETACH 0x20 |
| 71 | #define DEBUG_XFERS 0x40 |
| 72 | #ifdef ATADEBUG |
| 73 | #ifndef ATADEBUG_MASK |
| 74 | #define ATADEBUG_MASK 0 |
| 75 | #endif |
| 76 | int atadebug_mask = ATADEBUG_MASK; |
| 77 | #define ATADEBUG_PRINT(args, level) \ |
| 78 | if (atadebug_mask & (level)) \ |
| 79 | printf args |
| 80 | #else |
| 81 | #define ATADEBUG_PRINT(args, level) |
| 82 | #endif |
| 83 | |
| 84 | static ONCE_DECL(ata_init_ctrl); |
| 85 | static struct pool ata_xfer_pool; |
| 86 | |
| 87 | /* |
| 88 | * A queue of atabus instances, used to ensure the same bus probe order |
| 89 | * for a given hardware configuration at each boot. Kthread probing |
| 90 | * devices on a atabus. Only one probing at once. |
| 91 | */ |
| 92 | static TAILQ_HEAD(, atabus_initq) atabus_initq_head; |
| 93 | static kmutex_t atabus_qlock; |
| 94 | static kcondvar_t atabus_qcv; |
| 95 | static lwp_t * atabus_cfg_lwp; |
| 96 | |
| 97 | /***************************************************************************** |
| 98 | * ATA bus layer. |
| 99 | * |
| 100 | * ATA controllers attach an atabus instance, which handles probing the bus |
| 101 | * for drives, etc. |
| 102 | *****************************************************************************/ |
| 103 | |
| 104 | dev_type_open(atabusopen); |
| 105 | dev_type_close(atabusclose); |
| 106 | dev_type_ioctl(atabusioctl); |
| 107 | |
| 108 | const struct cdevsw atabus_cdevsw = { |
| 109 | .d_open = atabusopen, |
| 110 | .d_close = atabusclose, |
| 111 | .d_read = noread, |
| 112 | .d_write = nowrite, |
| 113 | .d_ioctl = atabusioctl, |
| 114 | .d_stop = nostop, |
| 115 | .d_tty = notty, |
| 116 | .d_poll = nopoll, |
| 117 | .d_mmap = nommap, |
| 118 | .d_kqfilter = nokqfilter, |
| 119 | .d_discard = nodiscard, |
| 120 | .d_flag = D_OTHER |
| 121 | }; |
| 122 | |
| 123 | extern struct cfdriver atabus_cd; |
| 124 | |
| 125 | static void atabus_childdetached(device_t, device_t); |
| 126 | static int atabus_rescan(device_t, const char *, const int *); |
| 127 | static bool atabus_resume(device_t, const pmf_qual_t *); |
| 128 | static bool atabus_suspend(device_t, const pmf_qual_t *); |
| 129 | static void atabusconfig_thread(void *); |
| 130 | |
| 131 | /* |
| 132 | * atabus_init: |
| 133 | * |
| 134 | * Initialize ATA subsystem structures. |
| 135 | */ |
| 136 | static int |
| 137 | atabus_init(void) |
| 138 | { |
| 139 | |
| 140 | pool_init(&ata_xfer_pool, sizeof(struct ata_xfer), 0, 0, 0, |
| 141 | "ataspl" , NULL, IPL_BIO); |
| 142 | TAILQ_INIT(&atabus_initq_head); |
| 143 | mutex_init(&atabus_qlock, MUTEX_DEFAULT, IPL_NONE); |
| 144 | cv_init(&atabus_qcv, "atainitq" ); |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * atabusprint: |
| 150 | * |
| 151 | * Autoconfiguration print routine used by ATA controllers when |
| 152 | * attaching an atabus instance. |
| 153 | */ |
| 154 | int |
| 155 | atabusprint(void *aux, const char *pnp) |
| 156 | { |
| 157 | struct ata_channel *chan = aux; |
| 158 | |
| 159 | if (pnp) |
| 160 | aprint_normal("atabus at %s" , pnp); |
| 161 | aprint_normal(" channel %d" , chan->ch_channel); |
| 162 | |
| 163 | return (UNCONF); |
| 164 | } |
| 165 | |
| 166 | /* |
| 167 | * ataprint: |
| 168 | * |
| 169 | * Autoconfiguration print routine. |
| 170 | */ |
| 171 | int |
| 172 | ataprint(void *aux, const char *pnp) |
| 173 | { |
| 174 | struct ata_device *adev = aux; |
| 175 | |
| 176 | if (pnp) |
| 177 | aprint_normal("wd at %s" , pnp); |
| 178 | aprint_normal(" drive %d" , adev->adev_drv_data->drive); |
| 179 | |
| 180 | return (UNCONF); |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * ata_channel_attach: |
| 185 | * |
| 186 | * Common parts of attaching an atabus to an ATA controller channel. |
| 187 | */ |
| 188 | void |
| 189 | ata_channel_attach(struct ata_channel *chp) |
| 190 | { |
| 191 | |
| 192 | if (chp->ch_flags & ATACH_DISABLED) |
| 193 | return; |
| 194 | |
| 195 | /* XXX callout_destroy */ |
| 196 | callout_init(&chp->ch_callout, 0); |
| 197 | |
| 198 | TAILQ_INIT(&chp->ch_queue->queue_xfer); |
| 199 | chp->ch_queue->queue_freeze = 0; |
| 200 | chp->ch_queue->queue_flags = 0; |
| 201 | chp->ch_queue->active_xfer = NULL; |
| 202 | |
| 203 | chp->atabus = config_found_ia(chp->ch_atac->atac_dev, "ata" , chp, |
| 204 | atabusprint); |
| 205 | } |
| 206 | |
| 207 | static void |
| 208 | atabusconfig(struct atabus_softc *atabus_sc) |
| 209 | { |
| 210 | struct ata_channel *chp = atabus_sc->sc_chan; |
| 211 | struct atac_softc *atac = chp->ch_atac; |
| 212 | struct atabus_initq *atabus_initq = NULL; |
| 213 | int i, s, error; |
| 214 | |
| 215 | /* we are in the atabus's thread context */ |
| 216 | s = splbio(); |
| 217 | chp->ch_flags |= ATACH_TH_RUN; |
| 218 | splx(s); |
| 219 | |
| 220 | /* |
| 221 | * Probe for the drives attached to controller, unless a PMP |
| 222 | * is already known |
| 223 | */ |
| 224 | /* XXX for SATA devices we will power up all drives at once */ |
| 225 | if (chp->ch_satapmp_nports == 0) |
| 226 | (*atac->atac_probe)(chp); |
| 227 | |
| 228 | if (chp->ch_ndrives >= 2) { |
| 229 | ATADEBUG_PRINT(("atabusattach: ch_drive_type 0x%x 0x%x\n" , |
| 230 | chp->ch_drive[0].drive_type, chp->ch_drive[1].drive_type), |
| 231 | DEBUG_PROBE); |
| 232 | } |
| 233 | |
| 234 | /* next operations will occurs in a separate thread */ |
| 235 | s = splbio(); |
| 236 | chp->ch_flags &= ~ATACH_TH_RUN; |
| 237 | splx(s); |
| 238 | |
| 239 | /* Make sure the devices probe in atabus order to avoid jitter. */ |
| 240 | mutex_enter(&atabus_qlock); |
| 241 | for (;;) { |
| 242 | atabus_initq = TAILQ_FIRST(&atabus_initq_head); |
| 243 | if (atabus_initq->atabus_sc == atabus_sc) |
| 244 | break; |
| 245 | cv_wait(&atabus_qcv, &atabus_qlock); |
| 246 | } |
| 247 | mutex_exit(&atabus_qlock); |
| 248 | |
| 249 | /* If no drives, abort here */ |
| 250 | if (chp->ch_drive == NULL) |
| 251 | goto out; |
| 252 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 253 | for (i = 0; i < chp->ch_ndrives; i++) |
| 254 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE) |
| 255 | break; |
| 256 | if (i == chp->ch_ndrives) |
| 257 | goto out; |
| 258 | |
| 259 | /* Shortcut in case we've been shutdown */ |
| 260 | if (chp->ch_flags & ATACH_SHUTDOWN) |
| 261 | goto out; |
| 262 | |
| 263 | if ((error = kthread_create(PRI_NONE, 0, NULL, atabusconfig_thread, |
| 264 | atabus_sc, &atabus_cfg_lwp, |
| 265 | "%scnf" , device_xname(atac->atac_dev))) != 0) |
| 266 | aprint_error_dev(atac->atac_dev, |
| 267 | "unable to create config thread: error %d\n" , error); |
| 268 | return; |
| 269 | |
| 270 | out: |
| 271 | mutex_enter(&atabus_qlock); |
| 272 | TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); |
| 273 | cv_broadcast(&atabus_qcv); |
| 274 | mutex_exit(&atabus_qlock); |
| 275 | |
| 276 | free(atabus_initq, M_DEVBUF); |
| 277 | |
| 278 | ata_delref(chp); |
| 279 | |
| 280 | config_pending_decr(atac->atac_dev); |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * atabus_configthread: finish attach of atabus's childrens, in a separate |
| 285 | * kernel thread. |
| 286 | */ |
| 287 | static void |
| 288 | atabusconfig_thread(void *arg) |
| 289 | { |
| 290 | struct atabus_softc *atabus_sc = arg; |
| 291 | struct ata_channel *chp = atabus_sc->sc_chan; |
| 292 | struct atac_softc *atac = chp->ch_atac; |
| 293 | struct atabus_initq *atabus_initq = NULL; |
| 294 | int i, s; |
| 295 | |
| 296 | /* XXX seems wrong */ |
| 297 | mutex_enter(&atabus_qlock); |
| 298 | atabus_initq = TAILQ_FIRST(&atabus_initq_head); |
| 299 | KASSERT(atabus_initq->atabus_sc == atabus_sc); |
| 300 | mutex_exit(&atabus_qlock); |
| 301 | |
| 302 | /* |
| 303 | * First look for a port multiplier |
| 304 | */ |
| 305 | if (chp->ch_ndrives == PMP_MAX_DRIVES && |
| 306 | chp->ch_drive[PMP_PORT_CTL].drive_type == ATA_DRIVET_PM) { |
| 307 | #if NSATA_PMP > 0 |
| 308 | satapmp_attach(chp); |
| 309 | #else |
| 310 | aprint_error_dev(atabus_sc->sc_dev, |
| 311 | "SATA port multiplier not supported\n" ); |
| 312 | /* no problems going on, all drives are ATA_DRIVET_NONE */ |
| 313 | #endif |
| 314 | } |
| 315 | |
| 316 | /* |
| 317 | * Attach an ATAPI bus, if needed. |
| 318 | */ |
| 319 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 320 | for (i = 0; i < chp->ch_ndrives && chp->atapibus == NULL; i++) { |
| 321 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) { |
| 322 | #if NATAPIBUS > 0 |
| 323 | (*atac->atac_atapibus_attach)(atabus_sc); |
| 324 | #else |
| 325 | /* |
| 326 | * Fake the autoconfig "not configured" message |
| 327 | */ |
| 328 | aprint_normal("atapibus at %s not configured\n" , |
| 329 | device_xname(atac->atac_dev)); |
| 330 | chp->atapibus = NULL; |
| 331 | s = splbio(); |
| 332 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 333 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
| 334 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 335 | } |
| 336 | splx(s); |
| 337 | #endif |
| 338 | break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 343 | struct ata_device adev; |
| 344 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_ATA && |
| 345 | chp->ch_drive[i].drive_type != ATA_DRIVET_OLD) { |
| 346 | continue; |
| 347 | } |
| 348 | if (chp->ch_drive[i].drv_softc != NULL) |
| 349 | continue; |
| 350 | memset(&adev, 0, sizeof(struct ata_device)); |
| 351 | adev.adev_bustype = atac->atac_bustype_ata; |
| 352 | adev.adev_channel = chp->ch_channel; |
| 353 | adev.adev_openings = 1; |
| 354 | adev.adev_drv_data = &chp->ch_drive[i]; |
| 355 | chp->ch_drive[i].drv_softc = config_found_ia(atabus_sc->sc_dev, |
| 356 | "ata_hl" , &adev, ataprint); |
| 357 | if (chp->ch_drive[i].drv_softc != NULL) { |
| 358 | ata_probe_caps(&chp->ch_drive[i]); |
| 359 | } else { |
| 360 | s = splbio(); |
| 361 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 362 | splx(s); |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | /* now that we know the drives, the controller can set its modes */ |
| 367 | if (atac->atac_set_modes) { |
| 368 | (*atac->atac_set_modes)(chp); |
| 369 | ata_print_modes(chp); |
| 370 | } |
| 371 | #if NATARAID > 0 |
| 372 | if (atac->atac_cap & ATAC_CAP_RAID) { |
| 373 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 374 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATA) { |
| 375 | ata_raid_check_component( |
| 376 | chp->ch_drive[i].drv_softc); |
| 377 | } |
| 378 | } |
| 379 | } |
| 380 | #endif /* NATARAID > 0 */ |
| 381 | |
| 382 | /* |
| 383 | * reset drive_flags for unattached devices, reset state for attached |
| 384 | * ones |
| 385 | */ |
| 386 | s = splbio(); |
| 387 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 388 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
| 389 | continue; |
| 390 | if (chp->ch_drive[i].drv_softc == NULL) { |
| 391 | chp->ch_drive[i].drive_flags = 0; |
| 392 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 393 | } else |
| 394 | chp->ch_drive[i].state = 0; |
| 395 | } |
| 396 | splx(s); |
| 397 | |
| 398 | mutex_enter(&atabus_qlock); |
| 399 | TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); |
| 400 | cv_broadcast(&atabus_qcv); |
| 401 | mutex_exit(&atabus_qlock); |
| 402 | |
| 403 | free(atabus_initq, M_DEVBUF); |
| 404 | |
| 405 | ata_delref(chp); |
| 406 | |
| 407 | config_pending_decr(atac->atac_dev); |
| 408 | kthread_exit(0); |
| 409 | } |
| 410 | |
| 411 | /* |
| 412 | * atabus_thread: |
| 413 | * |
| 414 | * Worker thread for the ATA bus. |
| 415 | */ |
| 416 | static void |
| 417 | atabus_thread(void *arg) |
| 418 | { |
| 419 | struct atabus_softc *sc = arg; |
| 420 | struct ata_channel *chp = sc->sc_chan; |
| 421 | struct ata_xfer *xfer; |
| 422 | int i, s; |
| 423 | |
| 424 | s = splbio(); |
| 425 | chp->ch_flags |= ATACH_TH_RUN; |
| 426 | |
| 427 | /* |
| 428 | * Probe the drives. Reset type to indicate to controllers |
| 429 | * that can re-probe that all drives must be probed.. |
| 430 | * |
| 431 | * Note: ch_ndrives may be changed during the probe. |
| 432 | */ |
| 433 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 434 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 435 | chp->ch_drive[i].drive_flags = 0; |
| 436 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 437 | } |
| 438 | splx(s); |
| 439 | |
| 440 | atabusconfig(sc); |
| 441 | |
| 442 | s = splbio(); |
| 443 | for (;;) { |
| 444 | if ((chp->ch_flags & (ATACH_TH_RESET | ATACH_SHUTDOWN)) == 0 && |
| 445 | (chp->ch_queue->active_xfer == NULL || |
| 446 | chp->ch_queue->queue_freeze == 0)) { |
| 447 | chp->ch_flags &= ~ATACH_TH_RUN; |
| 448 | (void) tsleep(&chp->ch_thread, PRIBIO, "atath" , 0); |
| 449 | chp->ch_flags |= ATACH_TH_RUN; |
| 450 | } |
| 451 | if (chp->ch_flags & ATACH_SHUTDOWN) { |
| 452 | break; |
| 453 | } |
| 454 | if (chp->ch_flags & ATACH_TH_RESCAN) { |
| 455 | atabusconfig(sc); |
| 456 | chp->ch_flags &= ~ATACH_TH_RESCAN; |
| 457 | } |
| 458 | if (chp->ch_flags & ATACH_TH_RESET) { |
| 459 | /* |
| 460 | * ata_reset_channel() will freeze 2 times, so |
| 461 | * unfreeze one time. Not a problem as we're at splbio |
| 462 | */ |
| 463 | chp->ch_queue->queue_freeze--; |
| 464 | ata_reset_channel(chp, AT_WAIT | chp->ch_reset_flags); |
| 465 | } else if (chp->ch_queue->active_xfer != NULL && |
| 466 | chp->ch_queue->queue_freeze == 1) { |
| 467 | /* |
| 468 | * Caller has bumped queue_freeze, decrease it. |
| 469 | */ |
| 470 | chp->ch_queue->queue_freeze--; |
| 471 | xfer = chp->ch_queue->active_xfer; |
| 472 | KASSERT(xfer != NULL); |
| 473 | (*xfer->c_start)(xfer->c_chp, xfer); |
| 474 | } else if (chp->ch_queue->queue_freeze > 1) |
| 475 | panic("ata_thread: queue_freeze" ); |
| 476 | } |
| 477 | splx(s); |
| 478 | chp->ch_thread = NULL; |
| 479 | wakeup(&chp->ch_flags); |
| 480 | kthread_exit(0); |
| 481 | } |
| 482 | |
| 483 | /* |
| 484 | * atabus_match: |
| 485 | * |
| 486 | * Autoconfiguration match routine. |
| 487 | */ |
| 488 | static int |
| 489 | atabus_match(device_t parent, cfdata_t cf, void *aux) |
| 490 | { |
| 491 | struct ata_channel *chp = aux; |
| 492 | |
| 493 | if (chp == NULL) |
| 494 | return (0); |
| 495 | |
| 496 | if (cf->cf_loc[ATACF_CHANNEL] != chp->ch_channel && |
| 497 | cf->cf_loc[ATACF_CHANNEL] != ATACF_CHANNEL_DEFAULT) |
| 498 | return (0); |
| 499 | |
| 500 | return (1); |
| 501 | } |
| 502 | |
| 503 | /* |
| 504 | * atabus_attach: |
| 505 | * |
| 506 | * Autoconfiguration attach routine. |
| 507 | */ |
| 508 | static void |
| 509 | atabus_attach(device_t parent, device_t self, void *aux) |
| 510 | { |
| 511 | struct atabus_softc *sc = device_private(self); |
| 512 | struct ata_channel *chp = aux; |
| 513 | struct atabus_initq *initq; |
| 514 | int error; |
| 515 | |
| 516 | sc->sc_chan = chp; |
| 517 | |
| 518 | aprint_normal("\n" ); |
| 519 | aprint_naive("\n" ); |
| 520 | |
| 521 | sc->sc_dev = self; |
| 522 | |
| 523 | if (ata_addref(chp)) |
| 524 | return; |
| 525 | |
| 526 | RUN_ONCE(&ata_init_ctrl, atabus_init); |
| 527 | |
| 528 | initq = malloc(sizeof(*initq), M_DEVBUF, M_WAITOK); |
| 529 | initq->atabus_sc = sc; |
| 530 | TAILQ_INSERT_TAIL(&atabus_initq_head, initq, atabus_initq); |
| 531 | config_pending_incr(sc->sc_dev); |
| 532 | |
| 533 | if ((error = kthread_create(PRI_NONE, 0, NULL, atabus_thread, sc, |
| 534 | &chp->ch_thread, "%s" , device_xname(self))) != 0) |
| 535 | aprint_error_dev(self, |
| 536 | "unable to create kernel thread: error %d\n" , error); |
| 537 | |
| 538 | if (!pmf_device_register(self, atabus_suspend, atabus_resume)) |
| 539 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 540 | } |
| 541 | |
| 542 | /* |
| 543 | * atabus_detach: |
| 544 | * |
| 545 | * Autoconfiguration detach routine. |
| 546 | */ |
| 547 | static int |
| 548 | atabus_detach(device_t self, int flags) |
| 549 | { |
| 550 | struct atabus_softc *sc = device_private(self); |
| 551 | struct ata_channel *chp = sc->sc_chan; |
| 552 | device_t dev = NULL; |
| 553 | int s, i, error = 0; |
| 554 | |
| 555 | /* Shutdown the channel. */ |
| 556 | s = splbio(); /* XXX ALSO NEED AN INTERLOCK HERE. */ |
| 557 | chp->ch_flags |= ATACH_SHUTDOWN; |
| 558 | splx(s); |
| 559 | |
| 560 | wakeup(&chp->ch_thread); |
| 561 | |
| 562 | while (chp->ch_thread != NULL) |
| 563 | (void) tsleep(&chp->ch_flags, PRIBIO, "atadown" , 0); |
| 564 | |
| 565 | |
| 566 | /* |
| 567 | * Detach atapibus and its children. |
| 568 | */ |
| 569 | if ((dev = chp->atapibus) != NULL) { |
| 570 | ATADEBUG_PRINT(("atabus_detach: %s: detaching %s\n" , |
| 571 | device_xname(self), device_xname(dev)), DEBUG_DETACH); |
| 572 | |
| 573 | error = config_detach(dev, flags); |
| 574 | if (error) |
| 575 | goto out; |
| 576 | KASSERT(chp->atapibus == NULL); |
| 577 | } |
| 578 | |
| 579 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 580 | |
| 581 | /* |
| 582 | * Detach our other children. |
| 583 | */ |
| 584 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 585 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
| 586 | continue; |
| 587 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
| 588 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 589 | if ((dev = chp->ch_drive[i].drv_softc) != NULL) { |
| 590 | ATADEBUG_PRINT(("%s.%d: %s: detaching %s\n" , __func__, |
| 591 | __LINE__, device_xname(self), device_xname(dev)), |
| 592 | DEBUG_DETACH); |
| 593 | error = config_detach(dev, flags); |
| 594 | if (error) |
| 595 | goto out; |
| 596 | KASSERT(chp->ch_drive[i].drv_softc == NULL); |
| 597 | KASSERT(chp->ch_drive[i].drive_type == 0); |
| 598 | } |
| 599 | } |
| 600 | atabus_free_drives(chp); |
| 601 | |
| 602 | out: |
| 603 | #ifdef ATADEBUG |
| 604 | if (dev != NULL && error != 0) |
| 605 | ATADEBUG_PRINT(("%s: %s: error %d detaching %s\n" , __func__, |
| 606 | device_xname(self), error, device_xname(dev)), |
| 607 | DEBUG_DETACH); |
| 608 | #endif /* ATADEBUG */ |
| 609 | |
| 610 | return (error); |
| 611 | } |
| 612 | |
| 613 | void |
| 614 | atabus_childdetached(device_t self, device_t child) |
| 615 | { |
| 616 | bool found = false; |
| 617 | struct atabus_softc *sc = device_private(self); |
| 618 | struct ata_channel *chp = sc->sc_chan; |
| 619 | int i; |
| 620 | |
| 621 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 622 | /* |
| 623 | * atapibus detached. |
| 624 | */ |
| 625 | if (child == chp->atapibus) { |
| 626 | chp->atapibus = NULL; |
| 627 | found = true; |
| 628 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 629 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_ATAPI) |
| 630 | continue; |
| 631 | KASSERT(chp->ch_drive[i].drv_softc != NULL); |
| 632 | chp->ch_drive[i].drv_softc = NULL; |
| 633 | chp->ch_drive[i].drive_flags = 0; |
| 634 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | * Detach our other children. |
| 640 | */ |
| 641 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 642 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_ATAPI) |
| 643 | continue; |
| 644 | if (child == chp->ch_drive[i].drv_softc) { |
| 645 | chp->ch_drive[i].drv_softc = NULL; |
| 646 | chp->ch_drive[i].drive_flags = 0; |
| 647 | if (chp->ch_drive[i].drive_type == ATA_DRIVET_PM) |
| 648 | chp->ch_satapmp_nports = 0; |
| 649 | chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; |
| 650 | found = true; |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | if (!found) |
| 655 | panic("%s: unknown child %p" , device_xname(self), |
| 656 | (const void *)child); |
| 657 | } |
| 658 | |
| 659 | CFATTACH_DECL3_NEW(atabus, sizeof(struct atabus_softc), |
| 660 | atabus_match, atabus_attach, atabus_detach, NULL, atabus_rescan, |
| 661 | atabus_childdetached, DVF_DETACH_SHUTDOWN); |
| 662 | |
| 663 | /***************************************************************************** |
| 664 | * Common ATA bus operations. |
| 665 | *****************************************************************************/ |
| 666 | |
| 667 | /* allocate/free the channel's ch_drive[] array */ |
| 668 | int |
| 669 | atabus_alloc_drives(struct ata_channel *chp, int ndrives) |
| 670 | { |
| 671 | int i; |
| 672 | if (chp->ch_ndrives != ndrives) |
| 673 | atabus_free_drives(chp); |
| 674 | if (chp->ch_drive == NULL) { |
| 675 | chp->ch_drive = malloc( |
| 676 | sizeof(struct ata_drive_datas) * ndrives, |
| 677 | M_DEVBUF, M_NOWAIT | M_ZERO); |
| 678 | } |
| 679 | if (chp->ch_drive == NULL) { |
| 680 | aprint_error_dev(chp->ch_atac->atac_dev, |
| 681 | "can't alloc drive array\n" ); |
| 682 | chp->ch_ndrives = 0; |
| 683 | return ENOMEM; |
| 684 | }; |
| 685 | for (i = 0; i < ndrives; i++) { |
| 686 | chp->ch_drive[i].chnl_softc = chp; |
| 687 | chp->ch_drive[i].drive = i; |
| 688 | } |
| 689 | chp->ch_ndrives = ndrives; |
| 690 | return 0; |
| 691 | } |
| 692 | |
| 693 | void |
| 694 | atabus_free_drives(struct ata_channel *chp) |
| 695 | { |
| 696 | #ifdef DIAGNOSTIC |
| 697 | int i; |
| 698 | int dopanic = 0; |
| 699 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 700 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 701 | if (chp->ch_drive[i].drive_type != ATA_DRIVET_NONE) { |
| 702 | printf("%s: ch_drive[%d] type %d != ATA_DRIVET_NONE\n" , |
| 703 | device_xname(chp->atabus), i, |
| 704 | chp->ch_drive[i].drive_type); |
| 705 | dopanic = 1; |
| 706 | } |
| 707 | if (chp->ch_drive[i].drv_softc != NULL) { |
| 708 | printf("%s: ch_drive[%d] attached to %s\n" , |
| 709 | device_xname(chp->atabus), i, |
| 710 | device_xname(chp->ch_drive[i].drv_softc)); |
| 711 | dopanic = 1; |
| 712 | } |
| 713 | } |
| 714 | if (dopanic) |
| 715 | panic("atabus_free_drives" ); |
| 716 | #endif |
| 717 | |
| 718 | if (chp->ch_drive == NULL) |
| 719 | return; |
| 720 | chp->ch_ndrives = 0; |
| 721 | free(chp->ch_drive, M_DEVBUF); |
| 722 | chp->ch_drive = NULL; |
| 723 | } |
| 724 | |
| 725 | /* Get the disk's parameters */ |
| 726 | int |
| 727 | ata_get_params(struct ata_drive_datas *drvp, uint8_t flags, |
| 728 | struct ataparams *prms) |
| 729 | { |
| 730 | struct ata_command ata_c; |
| 731 | struct ata_channel *chp = drvp->chnl_softc; |
| 732 | struct atac_softc *atac = chp->ch_atac; |
| 733 | char *tb; |
| 734 | int i, rv; |
| 735 | uint16_t *p; |
| 736 | |
| 737 | ATADEBUG_PRINT(("%s\n" , __func__), DEBUG_FUNCS); |
| 738 | |
| 739 | tb = kmem_zalloc(DEV_BSIZE, KM_SLEEP); |
| 740 | memset(prms, 0, sizeof(struct ataparams)); |
| 741 | memset(&ata_c, 0, sizeof(struct ata_command)); |
| 742 | |
| 743 | if (drvp->drive_type == ATA_DRIVET_ATA) { |
| 744 | ata_c.r_command = WDCC_IDENTIFY; |
| 745 | ata_c.r_st_bmask = WDCS_DRDY; |
| 746 | ata_c.r_st_pmask = WDCS_DRQ; |
| 747 | ata_c.timeout = 3000; /* 3s */ |
| 748 | } else if (drvp->drive_type == ATA_DRIVET_ATAPI) { |
| 749 | ata_c.r_command = ATAPI_IDENTIFY_DEVICE; |
| 750 | ata_c.r_st_bmask = 0; |
| 751 | ata_c.r_st_pmask = WDCS_DRQ; |
| 752 | ata_c.timeout = 10000; /* 10s */ |
| 753 | } else { |
| 754 | ATADEBUG_PRINT(("ata_get_parms: no disks\n" ), |
| 755 | DEBUG_FUNCS|DEBUG_PROBE); |
| 756 | rv = CMD_ERR; |
| 757 | goto out; |
| 758 | } |
| 759 | ata_c.flags = AT_READ | flags; |
| 760 | ata_c.data = tb; |
| 761 | ata_c.bcount = DEV_BSIZE; |
| 762 | if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, |
| 763 | &ata_c) != ATACMD_COMPLETE) { |
| 764 | ATADEBUG_PRINT(("ata_get_parms: wdc_exec_command failed\n" ), |
| 765 | DEBUG_FUNCS|DEBUG_PROBE); |
| 766 | rv = CMD_AGAIN; |
| 767 | goto out; |
| 768 | } |
| 769 | if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { |
| 770 | ATADEBUG_PRINT(("ata_get_parms: ata_c.flags=0x%x\n" , |
| 771 | ata_c.flags), DEBUG_FUNCS|DEBUG_PROBE); |
| 772 | rv = CMD_ERR; |
| 773 | goto out; |
| 774 | } |
| 775 | /* if we didn't read any data something is wrong */ |
| 776 | if ((ata_c.flags & AT_XFDONE) == 0) { |
| 777 | rv = CMD_ERR; |
| 778 | goto out; |
| 779 | } |
| 780 | |
| 781 | /* Read in parameter block. */ |
| 782 | memcpy(prms, tb, sizeof(struct ataparams)); |
| 783 | |
| 784 | /* |
| 785 | * Shuffle string byte order. |
| 786 | * ATAPI NEC, Mitsumi and Pioneer drives and |
| 787 | * old ATA TDK CompactFlash cards |
| 788 | * have different byte order. |
| 789 | */ |
| 790 | #if BYTE_ORDER == BIG_ENDIAN |
| 791 | # define M(n) prms->atap_model[(n) ^ 1] |
| 792 | #else |
| 793 | # define M(n) prms->atap_model[n] |
| 794 | #endif |
| 795 | if ( |
| 796 | #if BYTE_ORDER == BIG_ENDIAN |
| 797 | ! |
| 798 | #endif |
| 799 | ((drvp->drive_type == ATA_DRIVET_ATAPI) ? |
| 800 | ((M(0) == 'N' && M(1) == 'E') || |
| 801 | (M(0) == 'F' && M(1) == 'X') || |
| 802 | (M(0) == 'P' && M(1) == 'i')) : |
| 803 | ((M(0) == 'T' && M(1) == 'D' && M(2) == 'K')))) { |
| 804 | rv = CMD_OK; |
| 805 | goto out; |
| 806 | } |
| 807 | #undef M |
| 808 | for (i = 0; i < sizeof(prms->atap_model); i += 2) { |
| 809 | p = (uint16_t *)(prms->atap_model + i); |
| 810 | *p = bswap16(*p); |
| 811 | } |
| 812 | for (i = 0; i < sizeof(prms->atap_serial); i += 2) { |
| 813 | p = (uint16_t *)(prms->atap_serial + i); |
| 814 | *p = bswap16(*p); |
| 815 | } |
| 816 | for (i = 0; i < sizeof(prms->atap_revision); i += 2) { |
| 817 | p = (uint16_t *)(prms->atap_revision + i); |
| 818 | *p = bswap16(*p); |
| 819 | } |
| 820 | |
| 821 | rv = CMD_OK; |
| 822 | out: |
| 823 | kmem_free(tb, DEV_BSIZE); |
| 824 | return rv; |
| 825 | } |
| 826 | |
| 827 | int |
| 828 | ata_set_mode(struct ata_drive_datas *drvp, uint8_t mode, uint8_t flags) |
| 829 | { |
| 830 | struct ata_command ata_c; |
| 831 | struct ata_channel *chp = drvp->chnl_softc; |
| 832 | struct atac_softc *atac = chp->ch_atac; |
| 833 | |
| 834 | ATADEBUG_PRINT(("ata_set_mode=0x%x\n" , mode), DEBUG_FUNCS); |
| 835 | memset(&ata_c, 0, sizeof(struct ata_command)); |
| 836 | |
| 837 | ata_c.r_command = SET_FEATURES; |
| 838 | ata_c.r_st_bmask = 0; |
| 839 | ata_c.r_st_pmask = 0; |
| 840 | ata_c.r_features = WDSF_SET_MODE; |
| 841 | ata_c.r_count = mode; |
| 842 | ata_c.flags = flags; |
| 843 | ata_c.timeout = 1000; /* 1s */ |
| 844 | if ((*atac->atac_bustype_ata->ata_exec_command)(drvp, |
| 845 | &ata_c) != ATACMD_COMPLETE) |
| 846 | return CMD_AGAIN; |
| 847 | if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { |
| 848 | return CMD_ERR; |
| 849 | } |
| 850 | return CMD_OK; |
| 851 | } |
| 852 | |
| 853 | #if NATA_DMA |
| 854 | void |
| 855 | ata_dmaerr(struct ata_drive_datas *drvp, int flags) |
| 856 | { |
| 857 | /* |
| 858 | * Downgrade decision: if we get NERRS_MAX in NXFER. |
| 859 | * We start with n_dmaerrs set to NERRS_MAX-1 so that the |
| 860 | * first error within the first NXFER ops will immediatly trigger |
| 861 | * a downgrade. |
| 862 | * If we got an error and n_xfers is bigger than NXFER reset counters. |
| 863 | */ |
| 864 | drvp->n_dmaerrs++; |
| 865 | if (drvp->n_dmaerrs >= NERRS_MAX && drvp->n_xfers <= NXFER) { |
| 866 | ata_downgrade_mode(drvp, flags); |
| 867 | drvp->n_dmaerrs = NERRS_MAX-1; |
| 868 | drvp->n_xfers = 0; |
| 869 | return; |
| 870 | } |
| 871 | if (drvp->n_xfers > NXFER) { |
| 872 | drvp->n_dmaerrs = 1; /* just got an error */ |
| 873 | drvp->n_xfers = 1; /* restart counting from this error */ |
| 874 | } |
| 875 | } |
| 876 | #endif /* NATA_DMA */ |
| 877 | |
| 878 | /* |
| 879 | * freeze the queue and wait for the controller to be idle. Caller has to |
| 880 | * unfreeze/restart the queue |
| 881 | */ |
| 882 | void |
| 883 | ata_queue_idle(struct ata_queue *queue) |
| 884 | { |
| 885 | int s = splbio(); |
| 886 | queue->queue_freeze++; |
| 887 | while (queue->active_xfer != NULL) { |
| 888 | queue->queue_flags |= QF_IDLE_WAIT; |
| 889 | tsleep(&queue->queue_flags, PRIBIO, "qidl" , 0); |
| 890 | } |
| 891 | splx(s); |
| 892 | } |
| 893 | |
| 894 | /* |
| 895 | * Add a command to the queue and start controller. |
| 896 | * |
| 897 | * MUST BE CALLED AT splbio()! |
| 898 | */ |
| 899 | void |
| 900 | ata_exec_xfer(struct ata_channel *chp, struct ata_xfer *xfer) |
| 901 | { |
| 902 | |
| 903 | ATADEBUG_PRINT(("ata_exec_xfer %p channel %d drive %d\n" , xfer, |
| 904 | chp->ch_channel, xfer->c_drive), DEBUG_XFERS); |
| 905 | |
| 906 | /* complete xfer setup */ |
| 907 | xfer->c_chp = chp; |
| 908 | |
| 909 | /* insert at the end of command list */ |
| 910 | TAILQ_INSERT_TAIL(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
| 911 | ATADEBUG_PRINT(("atastart from ata_exec_xfer, flags 0x%x\n" , |
| 912 | chp->ch_flags), DEBUG_XFERS); |
| 913 | /* |
| 914 | * if polling and can sleep, wait for the xfer to be at head of queue |
| 915 | */ |
| 916 | if ((xfer->c_flags & (C_POLL | C_WAIT)) == (C_POLL | C_WAIT)) { |
| 917 | while (chp->ch_queue->active_xfer != NULL || |
| 918 | TAILQ_FIRST(&chp->ch_queue->queue_xfer) != xfer) { |
| 919 | xfer->c_flags |= C_WAITACT; |
| 920 | tsleep(xfer, PRIBIO, "ataact" , 0); |
| 921 | xfer->c_flags &= ~C_WAITACT; |
| 922 | if (xfer->c_flags & C_FREE) { |
| 923 | ata_free_xfer(chp, xfer); |
| 924 | return; |
| 925 | } |
| 926 | } |
| 927 | } |
| 928 | atastart(chp); |
| 929 | } |
| 930 | |
| 931 | /* |
| 932 | * Start I/O on a controller, for the given channel. |
| 933 | * The first xfer may be not for our channel if the channel queues |
| 934 | * are shared. |
| 935 | * |
| 936 | * MUST BE CALLED AT splbio()! |
| 937 | */ |
| 938 | void |
| 939 | atastart(struct ata_channel *chp) |
| 940 | { |
| 941 | struct atac_softc *atac = chp->ch_atac; |
| 942 | struct ata_xfer *xfer; |
| 943 | |
| 944 | #ifdef ATA_DEBUG |
| 945 | int spl1, spl2; |
| 946 | |
| 947 | spl1 = splbio(); |
| 948 | spl2 = splbio(); |
| 949 | if (spl2 != spl1) { |
| 950 | printf("atastart: not at splbio()\n" ); |
| 951 | panic("atastart" ); |
| 952 | } |
| 953 | splx(spl2); |
| 954 | splx(spl1); |
| 955 | #endif /* ATA_DEBUG */ |
| 956 | |
| 957 | /* is there a xfer ? */ |
| 958 | if ((xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer)) == NULL) |
| 959 | return; |
| 960 | |
| 961 | /* adjust chp, in case we have a shared queue */ |
| 962 | chp = xfer->c_chp; |
| 963 | |
| 964 | if (chp->ch_queue->active_xfer != NULL) { |
| 965 | return; /* channel aleady active */ |
| 966 | } |
| 967 | if (__predict_false(chp->ch_queue->queue_freeze > 0)) { |
| 968 | if (chp->ch_queue->queue_flags & QF_IDLE_WAIT) { |
| 969 | chp->ch_queue->queue_flags &= ~QF_IDLE_WAIT; |
| 970 | wakeup(&chp->ch_queue->queue_flags); |
| 971 | } |
| 972 | return; /* queue frozen */ |
| 973 | } |
| 974 | /* |
| 975 | * if someone is waiting for the command to be active, wake it up |
| 976 | * and let it process the command |
| 977 | */ |
| 978 | if (xfer->c_flags & C_WAITACT) { |
| 979 | ATADEBUG_PRINT(("atastart: xfer %p channel %d drive %d " |
| 980 | "wait active\n" , xfer, chp->ch_channel, xfer->c_drive), |
| 981 | DEBUG_XFERS); |
| 982 | wakeup(xfer); |
| 983 | return; |
| 984 | } |
| 985 | #ifdef DIAGNOSTIC |
| 986 | if ((chp->ch_flags & ATACH_IRQ_WAIT) != 0) |
| 987 | panic("atastart: channel waiting for irq" ); |
| 988 | #endif |
| 989 | if (atac->atac_claim_hw) |
| 990 | if (!(*atac->atac_claim_hw)(chp, 0)) |
| 991 | return; |
| 992 | |
| 993 | ATADEBUG_PRINT(("atastart: xfer %p channel %d drive %d\n" , xfer, |
| 994 | chp->ch_channel, xfer->c_drive), DEBUG_XFERS); |
| 995 | if (chp->ch_drive[xfer->c_drive].drive_flags & ATA_DRIVE_RESET) { |
| 996 | chp->ch_drive[xfer->c_drive].drive_flags &= ~ATA_DRIVE_RESET; |
| 997 | chp->ch_drive[xfer->c_drive].state = 0; |
| 998 | } |
| 999 | chp->ch_queue->active_xfer = xfer; |
| 1000 | TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
| 1001 | |
| 1002 | if (atac->atac_cap & ATAC_CAP_NOIRQ) |
| 1003 | KASSERT(xfer->c_flags & C_POLL); |
| 1004 | |
| 1005 | xfer->c_start(chp, xfer); |
| 1006 | } |
| 1007 | |
| 1008 | struct ata_xfer * |
| 1009 | ata_get_xfer(int flags) |
| 1010 | { |
| 1011 | struct ata_xfer *xfer; |
| 1012 | int s; |
| 1013 | |
| 1014 | s = splbio(); |
| 1015 | xfer = pool_get(&ata_xfer_pool, |
| 1016 | ((flags & ATAXF_NOSLEEP) != 0 ? PR_NOWAIT : PR_WAITOK)); |
| 1017 | splx(s); |
| 1018 | if (xfer != NULL) { |
| 1019 | memset(xfer, 0, sizeof(struct ata_xfer)); |
| 1020 | } |
| 1021 | return xfer; |
| 1022 | } |
| 1023 | |
| 1024 | void |
| 1025 | ata_free_xfer(struct ata_channel *chp, struct ata_xfer *xfer) |
| 1026 | { |
| 1027 | struct atac_softc *atac = chp->ch_atac; |
| 1028 | int s; |
| 1029 | |
| 1030 | if (xfer->c_flags & C_WAITACT) { |
| 1031 | /* Someone is waiting for this xfer, so we can't free now */ |
| 1032 | xfer->c_flags |= C_FREE; |
| 1033 | wakeup(xfer); |
| 1034 | return; |
| 1035 | } |
| 1036 | |
| 1037 | #if NATA_PIOBM /* XXX wdc dependent code */ |
| 1038 | if (xfer->c_flags & C_PIOBM) { |
| 1039 | struct wdc_softc *wdc = CHAN_TO_WDC(chp); |
| 1040 | |
| 1041 | /* finish the busmastering PIO */ |
| 1042 | (*wdc->piobm_done)(wdc->dma_arg, |
| 1043 | chp->ch_channel, xfer->c_drive); |
| 1044 | chp->ch_flags &= ~(ATACH_DMA_WAIT | ATACH_PIOBM_WAIT | ATACH_IRQ_WAIT); |
| 1045 | } |
| 1046 | #endif |
| 1047 | |
| 1048 | if (atac->atac_free_hw) |
| 1049 | (*atac->atac_free_hw)(chp); |
| 1050 | s = splbio(); |
| 1051 | pool_put(&ata_xfer_pool, xfer); |
| 1052 | splx(s); |
| 1053 | } |
| 1054 | |
| 1055 | /* |
| 1056 | * Kill off all pending xfers for a ata_channel. |
| 1057 | * |
| 1058 | * Must be called at splbio(). |
| 1059 | */ |
| 1060 | void |
| 1061 | ata_kill_pending(struct ata_drive_datas *drvp) |
| 1062 | { |
| 1063 | struct ata_channel *chp = drvp->chnl_softc; |
| 1064 | struct ata_xfer *xfer, *next_xfer; |
| 1065 | int s = splbio(); |
| 1066 | |
| 1067 | for (xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); |
| 1068 | xfer != NULL; xfer = next_xfer) { |
| 1069 | next_xfer = TAILQ_NEXT(xfer, c_xferchain); |
| 1070 | if (xfer->c_chp != chp || xfer->c_drive != drvp->drive) |
| 1071 | continue; |
| 1072 | TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); |
| 1073 | (*xfer->c_kill_xfer)(chp, xfer, KILL_GONE); |
| 1074 | } |
| 1075 | |
| 1076 | while ((xfer = chp->ch_queue->active_xfer) != NULL) { |
| 1077 | if (xfer->c_chp == chp && xfer->c_drive == drvp->drive) { |
| 1078 | drvp->drive_flags |= ATA_DRIVE_WAITDRAIN; |
| 1079 | (void) tsleep(&chp->ch_queue->active_xfer, |
| 1080 | PRIBIO, "atdrn" , 0); |
| 1081 | } else { |
| 1082 | /* no more xfer for us */ |
| 1083 | break; |
| 1084 | } |
| 1085 | } |
| 1086 | splx(s); |
| 1087 | } |
| 1088 | |
| 1089 | /* |
| 1090 | * ata_reset_channel: |
| 1091 | * |
| 1092 | * Reset and ATA channel. |
| 1093 | * |
| 1094 | * MUST BE CALLED AT splbio()! |
| 1095 | */ |
| 1096 | void |
| 1097 | ata_reset_channel(struct ata_channel *chp, int flags) |
| 1098 | { |
| 1099 | struct atac_softc *atac = chp->ch_atac; |
| 1100 | int drive; |
| 1101 | |
| 1102 | #ifdef ATA_DEBUG |
| 1103 | int spl1, spl2; |
| 1104 | |
| 1105 | spl1 = splbio(); |
| 1106 | spl2 = splbio(); |
| 1107 | if (spl2 != spl1) { |
| 1108 | printf("ata_reset_channel: not at splbio()\n" ); |
| 1109 | panic("ata_reset_channel" ); |
| 1110 | } |
| 1111 | splx(spl2); |
| 1112 | splx(spl1); |
| 1113 | #endif /* ATA_DEBUG */ |
| 1114 | |
| 1115 | chp->ch_queue->queue_freeze++; |
| 1116 | |
| 1117 | /* |
| 1118 | * If we can poll or wait it's OK, otherwise wake up the |
| 1119 | * kernel thread to do it for us. |
| 1120 | */ |
| 1121 | ATADEBUG_PRINT(("ata_reset_channel flags 0x%x ch_flags 0x%x\n" , |
| 1122 | flags, chp->ch_flags), DEBUG_FUNCS | DEBUG_XFERS); |
| 1123 | if ((flags & (AT_POLL | AT_WAIT)) == 0) { |
| 1124 | if (chp->ch_flags & ATACH_TH_RESET) { |
| 1125 | /* No need to schedule a reset more than one time. */ |
| 1126 | chp->ch_queue->queue_freeze--; |
| 1127 | return; |
| 1128 | } |
| 1129 | chp->ch_flags |= ATACH_TH_RESET; |
| 1130 | chp->ch_reset_flags = flags & (AT_RST_EMERG | AT_RST_NOCMD); |
| 1131 | wakeup(&chp->ch_thread); |
| 1132 | return; |
| 1133 | } |
| 1134 | |
| 1135 | (*atac->atac_bustype_ata->ata_reset_channel)(chp, flags); |
| 1136 | |
| 1137 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 1138 | for (drive = 0; drive < chp->ch_ndrives; drive++) |
| 1139 | chp->ch_drive[drive].state = 0; |
| 1140 | |
| 1141 | chp->ch_flags &= ~ATACH_TH_RESET; |
| 1142 | if ((flags & AT_RST_EMERG) == 0) { |
| 1143 | chp->ch_queue->queue_freeze--; |
| 1144 | atastart(chp); |
| 1145 | } else { |
| 1146 | /* make sure that we can use polled commands */ |
| 1147 | TAILQ_INIT(&chp->ch_queue->queue_xfer); |
| 1148 | chp->ch_queue->queue_freeze = 0; |
| 1149 | chp->ch_queue->active_xfer = NULL; |
| 1150 | } |
| 1151 | } |
| 1152 | |
| 1153 | int |
| 1154 | ata_addref(struct ata_channel *chp) |
| 1155 | { |
| 1156 | struct atac_softc *atac = chp->ch_atac; |
| 1157 | struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic; |
| 1158 | int s, error = 0; |
| 1159 | |
| 1160 | s = splbio(); |
| 1161 | if (adapt->adapt_refcnt++ == 0 && |
| 1162 | adapt->adapt_enable != NULL) { |
| 1163 | error = (*adapt->adapt_enable)(atac->atac_dev, 1); |
| 1164 | if (error) |
| 1165 | adapt->adapt_refcnt--; |
| 1166 | } |
| 1167 | splx(s); |
| 1168 | return (error); |
| 1169 | } |
| 1170 | |
| 1171 | void |
| 1172 | ata_delref(struct ata_channel *chp) |
| 1173 | { |
| 1174 | struct atac_softc *atac = chp->ch_atac; |
| 1175 | struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic; |
| 1176 | int s; |
| 1177 | |
| 1178 | s = splbio(); |
| 1179 | if (adapt->adapt_refcnt-- == 1 && |
| 1180 | adapt->adapt_enable != NULL) |
| 1181 | (void) (*adapt->adapt_enable)(atac->atac_dev, 0); |
| 1182 | splx(s); |
| 1183 | } |
| 1184 | |
| 1185 | void |
| 1186 | ata_print_modes(struct ata_channel *chp) |
| 1187 | { |
| 1188 | struct atac_softc *atac = chp->ch_atac; |
| 1189 | int drive; |
| 1190 | struct ata_drive_datas *drvp; |
| 1191 | |
| 1192 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 1193 | for (drive = 0; drive < chp->ch_ndrives; drive++) { |
| 1194 | drvp = &chp->ch_drive[drive]; |
| 1195 | if (drvp->drive_type == ATA_DRIVET_NONE || |
| 1196 | drvp->drv_softc == NULL) |
| 1197 | continue; |
| 1198 | aprint_verbose("%s(%s:%d:%d): using PIO mode %d" , |
| 1199 | device_xname(drvp->drv_softc), |
| 1200 | device_xname(atac->atac_dev), |
| 1201 | chp->ch_channel, drvp->drive, drvp->PIO_mode); |
| 1202 | #if NATA_DMA |
| 1203 | if (drvp->drive_flags & ATA_DRIVE_DMA) |
| 1204 | aprint_verbose(", DMA mode %d" , drvp->DMA_mode); |
| 1205 | #if NATA_UDMA |
| 1206 | if (drvp->drive_flags & ATA_DRIVE_UDMA) { |
| 1207 | aprint_verbose(", Ultra-DMA mode %d" , drvp->UDMA_mode); |
| 1208 | if (drvp->UDMA_mode == 2) |
| 1209 | aprint_verbose(" (Ultra/33)" ); |
| 1210 | else if (drvp->UDMA_mode == 4) |
| 1211 | aprint_verbose(" (Ultra/66)" ); |
| 1212 | else if (drvp->UDMA_mode == 5) |
| 1213 | aprint_verbose(" (Ultra/100)" ); |
| 1214 | else if (drvp->UDMA_mode == 6) |
| 1215 | aprint_verbose(" (Ultra/133)" ); |
| 1216 | } |
| 1217 | #endif /* NATA_UDMA */ |
| 1218 | #endif /* NATA_DMA */ |
| 1219 | #if NATA_DMA || NATA_PIOBM |
| 1220 | if (0 |
| 1221 | #if NATA_DMA |
| 1222 | || (drvp->drive_flags & (ATA_DRIVE_DMA | ATA_DRIVE_UDMA)) |
| 1223 | #endif |
| 1224 | #if NATA_PIOBM |
| 1225 | /* PIOBM capable controllers use DMA for PIO commands */ |
| 1226 | || (atac->atac_cap & ATAC_CAP_PIOBM) |
| 1227 | #endif |
| 1228 | ) |
| 1229 | aprint_verbose(" (using DMA)" ); |
| 1230 | #endif /* NATA_DMA || NATA_PIOBM */ |
| 1231 | aprint_verbose("\n" ); |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | #if NATA_DMA |
| 1236 | /* |
| 1237 | * downgrade the transfer mode of a drive after an error. return 1 if |
| 1238 | * downgrade was possible, 0 otherwise. |
| 1239 | * |
| 1240 | * MUST BE CALLED AT splbio()! |
| 1241 | */ |
| 1242 | int |
| 1243 | ata_downgrade_mode(struct ata_drive_datas *drvp, int flags) |
| 1244 | { |
| 1245 | struct ata_channel *chp = drvp->chnl_softc; |
| 1246 | struct atac_softc *atac = chp->ch_atac; |
| 1247 | device_t drv_dev = drvp->drv_softc; |
| 1248 | int cf_flags = device_cfdata(drv_dev)->cf_flags; |
| 1249 | |
| 1250 | /* if drive or controller don't know its mode, we can't do much */ |
| 1251 | if ((drvp->drive_flags & ATA_DRIVE_MODE) == 0 || |
| 1252 | (atac->atac_set_modes == NULL)) |
| 1253 | return 0; |
| 1254 | /* current drive mode was set by a config flag, let it this way */ |
| 1255 | if ((cf_flags & ATA_CONFIG_PIO_SET) || |
| 1256 | (cf_flags & ATA_CONFIG_DMA_SET) || |
| 1257 | (cf_flags & ATA_CONFIG_UDMA_SET)) |
| 1258 | return 0; |
| 1259 | |
| 1260 | #if NATA_UDMA |
| 1261 | /* |
| 1262 | * If we were using Ultra-DMA mode, downgrade to the next lower mode. |
| 1263 | */ |
| 1264 | if ((drvp->drive_flags & ATA_DRIVE_UDMA) && drvp->UDMA_mode >= 2) { |
| 1265 | drvp->UDMA_mode--; |
| 1266 | aprint_error_dev(drv_dev, |
| 1267 | "transfer error, downgrading to Ultra-DMA mode %d\n" , |
| 1268 | drvp->UDMA_mode); |
| 1269 | } |
| 1270 | #endif |
| 1271 | |
| 1272 | /* |
| 1273 | * If we were using ultra-DMA, don't downgrade to multiword DMA. |
| 1274 | */ |
| 1275 | else if (drvp->drive_flags & (ATA_DRIVE_DMA | ATA_DRIVE_UDMA)) { |
| 1276 | drvp->drive_flags &= ~(ATA_DRIVE_DMA | ATA_DRIVE_UDMA); |
| 1277 | drvp->PIO_mode = drvp->PIO_cap; |
| 1278 | aprint_error_dev(drv_dev, |
| 1279 | "transfer error, downgrading to PIO mode %d\n" , |
| 1280 | drvp->PIO_mode); |
| 1281 | } else /* already using PIO, can't downgrade */ |
| 1282 | return 0; |
| 1283 | |
| 1284 | (*atac->atac_set_modes)(chp); |
| 1285 | ata_print_modes(chp); |
| 1286 | /* reset the channel, which will schedule all drives for setup */ |
| 1287 | ata_reset_channel(chp, flags | AT_RST_NOCMD); |
| 1288 | return 1; |
| 1289 | } |
| 1290 | #endif /* NATA_DMA */ |
| 1291 | |
| 1292 | /* |
| 1293 | * Probe drive's capabilities, for use by the controller later |
| 1294 | * Assumes drvp points to an existing drive. |
| 1295 | */ |
| 1296 | void |
| 1297 | ata_probe_caps(struct ata_drive_datas *drvp) |
| 1298 | { |
| 1299 | struct ataparams params, params2; |
| 1300 | struct ata_channel *chp = drvp->chnl_softc; |
| 1301 | struct atac_softc *atac = chp->ch_atac; |
| 1302 | device_t drv_dev = drvp->drv_softc; |
| 1303 | int i, printed, s; |
| 1304 | const char *sep = "" ; |
| 1305 | int cf_flags; |
| 1306 | |
| 1307 | if (ata_get_params(drvp, AT_WAIT, ¶ms) != CMD_OK) { |
| 1308 | /* IDENTIFY failed. Can't tell more about the device */ |
| 1309 | return; |
| 1310 | } |
| 1311 | if ((atac->atac_cap & (ATAC_CAP_DATA16 | ATAC_CAP_DATA32)) == |
| 1312 | (ATAC_CAP_DATA16 | ATAC_CAP_DATA32)) { |
| 1313 | /* |
| 1314 | * Controller claims 16 and 32 bit transfers. |
| 1315 | * Re-do an IDENTIFY with 32-bit transfers, |
| 1316 | * and compare results. |
| 1317 | */ |
| 1318 | s = splbio(); |
| 1319 | drvp->drive_flags |= ATA_DRIVE_CAP32; |
| 1320 | splx(s); |
| 1321 | ata_get_params(drvp, AT_WAIT, ¶ms2); |
| 1322 | if (memcmp(¶ms, ¶ms2, sizeof(struct ataparams)) != 0) { |
| 1323 | /* Not good. fall back to 16bits */ |
| 1324 | s = splbio(); |
| 1325 | drvp->drive_flags &= ~ATA_DRIVE_CAP32; |
| 1326 | splx(s); |
| 1327 | } else { |
| 1328 | aprint_verbose_dev(drv_dev, "32-bit data port\n" ); |
| 1329 | } |
| 1330 | } |
| 1331 | #if 0 /* Some ultra-DMA drives claims to only support ATA-3. sigh */ |
| 1332 | if (params.atap_ata_major > 0x01 && |
| 1333 | params.atap_ata_major != 0xffff) { |
| 1334 | for (i = 14; i > 0; i--) { |
| 1335 | if (params.atap_ata_major & (1 << i)) { |
| 1336 | aprint_verbose_dev(drv_dev, |
| 1337 | "ATA version %d\n" , i); |
| 1338 | drvp->ata_vers = i; |
| 1339 | break; |
| 1340 | } |
| 1341 | } |
| 1342 | } |
| 1343 | #endif |
| 1344 | |
| 1345 | /* An ATAPI device is at last PIO mode 3 */ |
| 1346 | if (drvp->drive_type == ATA_DRIVET_ATAPI) |
| 1347 | drvp->PIO_mode = 3; |
| 1348 | |
| 1349 | /* |
| 1350 | * It's not in the specs, but it seems that some drive |
| 1351 | * returns 0xffff in atap_extensions when this field is invalid |
| 1352 | */ |
| 1353 | if (params.atap_extensions != 0xffff && |
| 1354 | (params.atap_extensions & WDC_EXT_MODES)) { |
| 1355 | printed = 0; |
| 1356 | /* |
| 1357 | * XXX some drives report something wrong here (they claim to |
| 1358 | * support PIO mode 8 !). As mode is coded on 3 bits in |
| 1359 | * SET FEATURE, limit it to 7 (so limit i to 4). |
| 1360 | * If higher mode than 7 is found, abort. |
| 1361 | */ |
| 1362 | for (i = 7; i >= 0; i--) { |
| 1363 | if ((params.atap_piomode_supp & (1 << i)) == 0) |
| 1364 | continue; |
| 1365 | if (i > 4) |
| 1366 | return; |
| 1367 | /* |
| 1368 | * See if mode is accepted. |
| 1369 | * If the controller can't set its PIO mode, |
| 1370 | * assume the defaults are good, so don't try |
| 1371 | * to set it |
| 1372 | */ |
| 1373 | if (atac->atac_set_modes) |
| 1374 | /* |
| 1375 | * It's OK to pool here, it's fast enough |
| 1376 | * to not bother waiting for interrupt |
| 1377 | */ |
| 1378 | if (ata_set_mode(drvp, 0x08 | (i + 3), |
| 1379 | AT_WAIT) != CMD_OK) |
| 1380 | continue; |
| 1381 | if (!printed) { |
| 1382 | aprint_verbose_dev(drv_dev, |
| 1383 | "drive supports PIO mode %d" , i + 3); |
| 1384 | sep = "," ; |
| 1385 | printed = 1; |
| 1386 | } |
| 1387 | /* |
| 1388 | * If controller's driver can't set its PIO mode, |
| 1389 | * get the highter one for the drive. |
| 1390 | */ |
| 1391 | if (atac->atac_set_modes == NULL || |
| 1392 | atac->atac_pio_cap >= i + 3) { |
| 1393 | drvp->PIO_mode = i + 3; |
| 1394 | drvp->PIO_cap = i + 3; |
| 1395 | break; |
| 1396 | } |
| 1397 | } |
| 1398 | if (!printed) { |
| 1399 | /* |
| 1400 | * We didn't find a valid PIO mode. |
| 1401 | * Assume the values returned for DMA are buggy too |
| 1402 | */ |
| 1403 | return; |
| 1404 | } |
| 1405 | s = splbio(); |
| 1406 | drvp->drive_flags |= ATA_DRIVE_MODE; |
| 1407 | splx(s); |
| 1408 | printed = 0; |
| 1409 | for (i = 7; i >= 0; i--) { |
| 1410 | if ((params.atap_dmamode_supp & (1 << i)) == 0) |
| 1411 | continue; |
| 1412 | #if NATA_DMA |
| 1413 | if ((atac->atac_cap & ATAC_CAP_DMA) && |
| 1414 | atac->atac_set_modes != NULL) |
| 1415 | if (ata_set_mode(drvp, 0x20 | i, AT_WAIT) |
| 1416 | != CMD_OK) |
| 1417 | continue; |
| 1418 | #endif |
| 1419 | if (!printed) { |
| 1420 | aprint_verbose("%s DMA mode %d" , sep, i); |
| 1421 | sep = "," ; |
| 1422 | printed = 1; |
| 1423 | } |
| 1424 | #if NATA_DMA |
| 1425 | if (atac->atac_cap & ATAC_CAP_DMA) { |
| 1426 | if (atac->atac_set_modes != NULL && |
| 1427 | atac->atac_dma_cap < i) |
| 1428 | continue; |
| 1429 | drvp->DMA_mode = i; |
| 1430 | drvp->DMA_cap = i; |
| 1431 | s = splbio(); |
| 1432 | drvp->drive_flags |= ATA_DRIVE_DMA; |
| 1433 | splx(s); |
| 1434 | } |
| 1435 | #endif |
| 1436 | break; |
| 1437 | } |
| 1438 | if (params.atap_extensions & WDC_EXT_UDMA_MODES) { |
| 1439 | printed = 0; |
| 1440 | for (i = 7; i >= 0; i--) { |
| 1441 | if ((params.atap_udmamode_supp & (1 << i)) |
| 1442 | == 0) |
| 1443 | continue; |
| 1444 | #if NATA_UDMA |
| 1445 | if (atac->atac_set_modes != NULL && |
| 1446 | (atac->atac_cap & ATAC_CAP_UDMA)) |
| 1447 | if (ata_set_mode(drvp, 0x40 | i, |
| 1448 | AT_WAIT) != CMD_OK) |
| 1449 | continue; |
| 1450 | #endif |
| 1451 | if (!printed) { |
| 1452 | aprint_verbose("%s Ultra-DMA mode %d" , |
| 1453 | sep, i); |
| 1454 | if (i == 2) |
| 1455 | aprint_verbose(" (Ultra/33)" ); |
| 1456 | else if (i == 4) |
| 1457 | aprint_verbose(" (Ultra/66)" ); |
| 1458 | else if (i == 5) |
| 1459 | aprint_verbose(" (Ultra/100)" ); |
| 1460 | else if (i == 6) |
| 1461 | aprint_verbose(" (Ultra/133)" ); |
| 1462 | sep = "," ; |
| 1463 | printed = 1; |
| 1464 | } |
| 1465 | #if NATA_UDMA |
| 1466 | if (atac->atac_cap & ATAC_CAP_UDMA) { |
| 1467 | if (atac->atac_set_modes != NULL && |
| 1468 | atac->atac_udma_cap < i) |
| 1469 | continue; |
| 1470 | drvp->UDMA_mode = i; |
| 1471 | drvp->UDMA_cap = i; |
| 1472 | s = splbio(); |
| 1473 | drvp->drive_flags |= ATA_DRIVE_UDMA; |
| 1474 | splx(s); |
| 1475 | } |
| 1476 | #endif |
| 1477 | break; |
| 1478 | } |
| 1479 | } |
| 1480 | aprint_verbose("\n" ); |
| 1481 | } |
| 1482 | |
| 1483 | s = splbio(); |
| 1484 | drvp->drive_flags &= ~ATA_DRIVE_NOSTREAM; |
| 1485 | if (drvp->drive_type == ATA_DRIVET_ATAPI) { |
| 1486 | if (atac->atac_cap & ATAC_CAP_ATAPI_NOSTREAM) |
| 1487 | drvp->drive_flags |= ATA_DRIVE_NOSTREAM; |
| 1488 | } else { |
| 1489 | if (atac->atac_cap & ATAC_CAP_ATA_NOSTREAM) |
| 1490 | drvp->drive_flags |= ATA_DRIVE_NOSTREAM; |
| 1491 | } |
| 1492 | splx(s); |
| 1493 | |
| 1494 | /* Try to guess ATA version here, if it didn't get reported */ |
| 1495 | if (drvp->ata_vers == 0) { |
| 1496 | #if NATA_UDMA |
| 1497 | if (drvp->drive_flags & ATA_DRIVE_UDMA) |
| 1498 | drvp->ata_vers = 4; /* should be at last ATA-4 */ |
| 1499 | else |
| 1500 | #endif |
| 1501 | if (drvp->PIO_cap > 2) |
| 1502 | drvp->ata_vers = 2; /* should be at last ATA-2 */ |
| 1503 | } |
| 1504 | cf_flags = device_cfdata(drv_dev)->cf_flags; |
| 1505 | if (cf_flags & ATA_CONFIG_PIO_SET) { |
| 1506 | s = splbio(); |
| 1507 | drvp->PIO_mode = |
| 1508 | (cf_flags & ATA_CONFIG_PIO_MODES) >> ATA_CONFIG_PIO_OFF; |
| 1509 | drvp->drive_flags |= ATA_DRIVE_MODE; |
| 1510 | splx(s); |
| 1511 | } |
| 1512 | #if NATA_DMA |
| 1513 | if ((atac->atac_cap & ATAC_CAP_DMA) == 0) { |
| 1514 | /* don't care about DMA modes */ |
| 1515 | return; |
| 1516 | } |
| 1517 | if (cf_flags & ATA_CONFIG_DMA_SET) { |
| 1518 | s = splbio(); |
| 1519 | if ((cf_flags & ATA_CONFIG_DMA_MODES) == |
| 1520 | ATA_CONFIG_DMA_DISABLE) { |
| 1521 | drvp->drive_flags &= ~ATA_DRIVE_DMA; |
| 1522 | } else { |
| 1523 | drvp->DMA_mode = (cf_flags & ATA_CONFIG_DMA_MODES) >> |
| 1524 | ATA_CONFIG_DMA_OFF; |
| 1525 | drvp->drive_flags |= ATA_DRIVE_DMA | ATA_DRIVE_MODE; |
| 1526 | } |
| 1527 | splx(s); |
| 1528 | } |
| 1529 | #if NATA_UDMA |
| 1530 | if ((atac->atac_cap & ATAC_CAP_UDMA) == 0) { |
| 1531 | /* don't care about UDMA modes */ |
| 1532 | return; |
| 1533 | } |
| 1534 | if (cf_flags & ATA_CONFIG_UDMA_SET) { |
| 1535 | s = splbio(); |
| 1536 | if ((cf_flags & ATA_CONFIG_UDMA_MODES) == |
| 1537 | ATA_CONFIG_UDMA_DISABLE) { |
| 1538 | drvp->drive_flags &= ~ATA_DRIVE_UDMA; |
| 1539 | } else { |
| 1540 | drvp->UDMA_mode = (cf_flags & ATA_CONFIG_UDMA_MODES) >> |
| 1541 | ATA_CONFIG_UDMA_OFF; |
| 1542 | drvp->drive_flags |= ATA_DRIVE_UDMA | ATA_DRIVE_MODE; |
| 1543 | } |
| 1544 | splx(s); |
| 1545 | } |
| 1546 | #endif /* NATA_UDMA */ |
| 1547 | #endif /* NATA_DMA */ |
| 1548 | } |
| 1549 | |
| 1550 | /* management of the /dev/atabus* devices */ |
| 1551 | int |
| 1552 | atabusopen(dev_t dev, int flag, int fmt, struct lwp *l) |
| 1553 | { |
| 1554 | struct atabus_softc *sc; |
| 1555 | int error; |
| 1556 | |
| 1557 | sc = device_lookup_private(&atabus_cd, minor(dev)); |
| 1558 | if (sc == NULL) |
| 1559 | return (ENXIO); |
| 1560 | |
| 1561 | if (sc->sc_flags & ATABUSCF_OPEN) |
| 1562 | return (EBUSY); |
| 1563 | |
| 1564 | if ((error = ata_addref(sc->sc_chan)) != 0) |
| 1565 | return (error); |
| 1566 | |
| 1567 | sc->sc_flags |= ATABUSCF_OPEN; |
| 1568 | |
| 1569 | return (0); |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | int |
| 1574 | atabusclose(dev_t dev, int flag, int fmt, struct lwp *l) |
| 1575 | { |
| 1576 | struct atabus_softc *sc = |
| 1577 | device_lookup_private(&atabus_cd, minor(dev)); |
| 1578 | |
| 1579 | ata_delref(sc->sc_chan); |
| 1580 | |
| 1581 | sc->sc_flags &= ~ATABUSCF_OPEN; |
| 1582 | |
| 1583 | return (0); |
| 1584 | } |
| 1585 | |
| 1586 | int |
| 1587 | atabusioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) |
| 1588 | { |
| 1589 | struct atabus_softc *sc = |
| 1590 | device_lookup_private(&atabus_cd, minor(dev)); |
| 1591 | struct ata_channel *chp = sc->sc_chan; |
| 1592 | int min_drive, max_drive, drive; |
| 1593 | int error; |
| 1594 | int s; |
| 1595 | |
| 1596 | /* |
| 1597 | * Enforce write permission for ioctls that change the |
| 1598 | * state of the bus. Host adapter specific ioctls must |
| 1599 | * be checked by the adapter driver. |
| 1600 | */ |
| 1601 | switch (cmd) { |
| 1602 | case ATABUSIOSCAN: |
| 1603 | case ATABUSIODETACH: |
| 1604 | case ATABUSIORESET: |
| 1605 | if ((flag & FWRITE) == 0) |
| 1606 | return (EBADF); |
| 1607 | } |
| 1608 | |
| 1609 | switch (cmd) { |
| 1610 | case ATABUSIORESET: |
| 1611 | s = splbio(); |
| 1612 | ata_reset_channel(sc->sc_chan, AT_WAIT | AT_POLL); |
| 1613 | splx(s); |
| 1614 | return 0; |
| 1615 | case ATABUSIOSCAN: |
| 1616 | { |
| 1617 | #if 0 |
| 1618 | struct atabusioscan_args *a= |
| 1619 | (struct atabusioscan_args *)addr; |
| 1620 | #endif |
| 1621 | if ((chp->ch_drive[0].drive_type == ATA_DRIVET_OLD) || |
| 1622 | (chp->ch_drive[1].drive_type == ATA_DRIVET_OLD)) |
| 1623 | return (EOPNOTSUPP); |
| 1624 | return (EOPNOTSUPP); |
| 1625 | } |
| 1626 | case ATABUSIODETACH: |
| 1627 | { |
| 1628 | struct atabusiodetach_args *a= |
| 1629 | (struct atabusiodetach_args *)addr; |
| 1630 | if ((chp->ch_drive[0].drive_type == ATA_DRIVET_OLD) || |
| 1631 | (chp->ch_drive[1].drive_type == ATA_DRIVET_OLD)) |
| 1632 | return (EOPNOTSUPP); |
| 1633 | switch (a->at_dev) { |
| 1634 | case -1: |
| 1635 | min_drive = 0; |
| 1636 | max_drive = 1; |
| 1637 | break; |
| 1638 | case 0: |
| 1639 | case 1: |
| 1640 | min_drive = max_drive = a->at_dev; |
| 1641 | break; |
| 1642 | default: |
| 1643 | return (EINVAL); |
| 1644 | } |
| 1645 | for (drive = min_drive; drive <= max_drive; drive++) { |
| 1646 | if (chp->ch_drive[drive].drv_softc != NULL) { |
| 1647 | error = config_detach( |
| 1648 | chp->ch_drive[drive].drv_softc, 0); |
| 1649 | if (error) |
| 1650 | return (error); |
| 1651 | KASSERT(chp->ch_drive[drive].drv_softc == NULL); |
| 1652 | } |
| 1653 | } |
| 1654 | return 0; |
| 1655 | } |
| 1656 | default: |
| 1657 | return ENOTTY; |
| 1658 | } |
| 1659 | } |
| 1660 | |
| 1661 | static bool |
| 1662 | atabus_suspend(device_t dv, const pmf_qual_t *qual) |
| 1663 | { |
| 1664 | struct atabus_softc *sc = device_private(dv); |
| 1665 | struct ata_channel *chp = sc->sc_chan; |
| 1666 | |
| 1667 | ata_queue_idle(chp->ch_queue); |
| 1668 | |
| 1669 | return true; |
| 1670 | } |
| 1671 | |
| 1672 | static bool |
| 1673 | atabus_resume(device_t dv, const pmf_qual_t *qual) |
| 1674 | { |
| 1675 | struct atabus_softc *sc = device_private(dv); |
| 1676 | struct ata_channel *chp = sc->sc_chan; |
| 1677 | int s; |
| 1678 | |
| 1679 | /* |
| 1680 | * XXX joerg: with wdc, the first channel unfreezes the controler. |
| 1681 | * Move this the reset and queue idling into wdc. |
| 1682 | */ |
| 1683 | s = splbio(); |
| 1684 | if (chp->ch_queue->queue_freeze == 0) { |
| 1685 | splx(s); |
| 1686 | return true; |
| 1687 | } |
| 1688 | KASSERT(chp->ch_queue->queue_freeze > 0); |
| 1689 | /* unfreeze the queue and reset drives */ |
| 1690 | chp->ch_queue->queue_freeze--; |
| 1691 | |
| 1692 | /* reset channel only if there are drives attached */ |
| 1693 | if (chp->ch_ndrives > 0) |
| 1694 | ata_reset_channel(chp, AT_WAIT); |
| 1695 | splx(s); |
| 1696 | |
| 1697 | return true; |
| 1698 | } |
| 1699 | |
| 1700 | static int |
| 1701 | atabus_rescan(device_t self, const char *ifattr, const int *locators) |
| 1702 | { |
| 1703 | struct atabus_softc *sc = device_private(self); |
| 1704 | struct ata_channel *chp = sc->sc_chan; |
| 1705 | struct atabus_initq *initq; |
| 1706 | int i; |
| 1707 | |
| 1708 | /* |
| 1709 | * we can rescan a port multiplier atabus, even if some devices are |
| 1710 | * still attached |
| 1711 | */ |
| 1712 | if (chp->ch_satapmp_nports == 0) { |
| 1713 | if (chp->atapibus != NULL) { |
| 1714 | return EBUSY; |
| 1715 | } |
| 1716 | |
| 1717 | KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); |
| 1718 | for (i = 0; i < chp->ch_ndrives; i++) { |
| 1719 | if (chp->ch_drive[i].drv_softc != NULL) { |
| 1720 | return EBUSY; |
| 1721 | } |
| 1722 | } |
| 1723 | } |
| 1724 | |
| 1725 | initq = malloc(sizeof(*initq), M_DEVBUF, M_WAITOK); |
| 1726 | initq->atabus_sc = sc; |
| 1727 | TAILQ_INSERT_TAIL(&atabus_initq_head, initq, atabus_initq); |
| 1728 | config_pending_incr(sc->sc_dev); |
| 1729 | |
| 1730 | chp->ch_flags |= ATACH_TH_RESCAN; |
| 1731 | wakeup(&chp->ch_thread); |
| 1732 | |
| 1733 | return 0; |
| 1734 | } |
| 1735 | |
| 1736 | void |
| 1737 | ata_delay(int ms, const char *msg, int flags) |
| 1738 | { |
| 1739 | if ((flags & (AT_WAIT | AT_POLL)) == AT_POLL) { |
| 1740 | /* |
| 1741 | * can't use tsleep(), we may be in interrupt context |
| 1742 | * or taking a crash dump |
| 1743 | */ |
| 1744 | delay(ms * 1000); |
| 1745 | } else { |
| 1746 | kpause(msg, false, mstohz(ms), NULL); |
| 1747 | } |
| 1748 | } |
| 1749 | |