wdc.c revision 1.197
1 /* $NetBSD: wdc.c,v 1.197 2004/08/12 21:10:18 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001, 2003 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 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1998, 2003 The NetBSD Foundation, Inc. 34 * All rights reserved. 35 * 36 * This code is derived from software contributed to The NetBSD Foundation 37 * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. All advertising materials mentioning features or use of this software 48 * must display the following acknowledgement: 49 * This product includes software developed by the NetBSD 50 * Foundation, Inc. and its contributors. 51 * 4. Neither the name of The NetBSD Foundation nor the names of its 52 * contributors may be used to endorse or promote products derived 53 * from this software without specific prior written permission. 54 * 55 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 56 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 57 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 58 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 59 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 60 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 61 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 62 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 63 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 64 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 65 * POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 /* 69 * CODE UNTESTED IN THE CURRENT REVISION: 70 */ 71 72 #include <sys/cdefs.h> 73 __KERNEL_RCSID(0, "$NetBSD: wdc.c,v 1.197 2004/08/12 21:10:18 thorpej Exp $"); 74 75 #ifndef WDCDEBUG 76 #define WDCDEBUG 77 #endif /* WDCDEBUG */ 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 #include <sys/kernel.h> 82 #include <sys/conf.h> 83 #include <sys/buf.h> 84 #include <sys/device.h> 85 #include <sys/malloc.h> 86 #include <sys/pool.h> 87 #include <sys/syslog.h> 88 #include <sys/proc.h> 89 90 #include <machine/intr.h> 91 #include <machine/bus.h> 92 93 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 94 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 95 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 96 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 97 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 98 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 99 100 #include <dev/ata/atavar.h> 101 #include <dev/ata/atareg.h> 102 #include <dev/ic/wdcreg.h> 103 #include <dev/ic/wdcvar.h> 104 105 #include "locators.h" 106 107 #include "ataraid.h" 108 #include "atapibus.h" 109 #include "wd.h" 110 111 #if NATARAID > 0 112 #include <dev/ata/ata_raidvar.h> 113 #endif 114 115 #define WDCDELAY 100 /* 100 microseconds */ 116 #define WDCNDELAY_RST (WDC_RESET_WAIT * 1000 / WDCDELAY) 117 #if 0 118 /* If you enable this, it will report any delays more than WDCDELAY * N long. */ 119 #define WDCNDELAY_DEBUG 50 120 #endif 121 122 /* When polling wait that much and then tsleep for 1/hz seconds */ 123 #define WDCDELAY_POLL 1 /* ms */ 124 125 /* timeout for the control commands */ 126 #define WDC_CTRL_DELAY 10000 /* 10s, for the recall command */ 127 128 struct pool wdc_xfer_pool; 129 130 #if NWD > 0 131 extern const struct ata_bustype wdc_ata_bustype; /* in ata_wdc.c */ 132 #else 133 /* A fake one, the autoconfig will print "wd at foo ... not configured */ 134 const struct ata_bustype wdc_ata_bustype = { 135 SCSIPI_BUSTYPE_ATA, 136 NULL, 137 NULL, 138 NULL, 139 NULL, 140 NULL, 141 NULL, 142 NULL 143 }; 144 #endif 145 146 static int wdcprobe1(struct wdc_channel*, int); 147 static void __wdcerror(struct wdc_channel*, char *); 148 static int __wdcwait_reset(struct wdc_channel *, int, int); 149 static void __wdccommand_done(struct wdc_channel *, struct ata_xfer *); 150 static void __wdccommand_done_end(struct wdc_channel *, struct ata_xfer *); 151 static void __wdccommand_kill_xfer(struct wdc_channel *, 152 struct ata_xfer *, int); 153 static void __wdccommand_start(struct wdc_channel *, struct ata_xfer *); 154 static int __wdccommand_intr(struct wdc_channel *, struct ata_xfer *, int); 155 static int __wdcwait(struct wdc_channel *, int, int, int); 156 157 #define DEBUG_INTR 0x01 158 #define DEBUG_XFERS 0x02 159 #define DEBUG_STATUS 0x04 160 #define DEBUG_FUNCS 0x08 161 #define DEBUG_PROBE 0x10 162 #define DEBUG_DETACH 0x20 163 #define DEBUG_DELAY 0x40 164 #ifdef WDCDEBUG 165 int wdcdebug_mask = 0; 166 int wdc_nxfer = 0; 167 #define WDCDEBUG_PRINT(args, level) if (wdcdebug_mask & (level)) printf args 168 #else 169 #define WDCDEBUG_PRINT(args, level) 170 #endif 171 172 /* 173 * A queue of atabus instances, used to ensure the same bus probe order 174 * for a given hardware configuration at each boot. 175 */ 176 struct atabus_initq_head atabus_initq_head = 177 TAILQ_HEAD_INITIALIZER(atabus_initq_head); 178 struct simplelock atabus_interlock = SIMPLELOCK_INITIALIZER; 179 180 /* 181 * Initialize the "shadow register" handles for a standard wdc controller. 182 */ 183 void 184 wdc_init_shadow_regs(struct wdc_channel *chp) 185 { 186 187 chp->cmd_iohs[wd_status] = chp->cmd_iohs[wd_command]; 188 chp->cmd_iohs[wd_features] = chp->cmd_iohs[wd_error]; 189 } 190 191 /* Test to see controller with at last one attached drive is there. 192 * Returns a bit for each possible drive found (0x01 for drive 0, 193 * 0x02 for drive 1). 194 * Logic: 195 * - If a status register is at 0xff, assume there is no drive here 196 * (ISA has pull-up resistors). Similarly if the status register has 197 * the value we last wrote to the bus (for IDE interfaces without pullups). 198 * If no drive at all -> return. 199 * - reset the controller, wait for it to complete (may take up to 31s !). 200 * If timeout -> return. 201 * - test ATA/ATAPI signatures. If at last one drive found -> return. 202 * - try an ATA command on the master. 203 */ 204 205 static void 206 wdc_drvprobe(struct wdc_channel *chp) 207 { 208 struct ataparams params; 209 struct wdc_softc *wdc = chp->ch_wdc; 210 u_int8_t st0 = 0, st1 = 0; 211 int i, error; 212 213 if (wdcprobe1(chp, 0) == 0) { 214 /* No drives, abort the attach here. */ 215 return; 216 } 217 218 /* for ATA/OLD drives, wait for DRDY, 3s timeout */ 219 for (i = 0; i < mstohz(3000); i++) { 220 if (chp->ch_drive[0].drive_flags & (DRIVE_ATA|DRIVE_OLD)) { 221 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 222 wdc->select(chp,0); 223 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 224 0, WDSD_IBM); 225 delay(10); /* 400ns delay */ 226 st0 = bus_space_read_1(chp->cmd_iot, 227 chp->cmd_iohs[wd_status], 0); 228 } 229 230 if (chp->ch_drive[1].drive_flags & (DRIVE_ATA|DRIVE_OLD)) { 231 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 232 wdc->select(chp,1); 233 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 234 0, WDSD_IBM | 0x10); 235 delay(10); /* 400ns delay */ 236 st1 = bus_space_read_1(chp->cmd_iot, 237 chp->cmd_iohs[wd_status], 0); 238 } 239 240 if (((chp->ch_drive[0].drive_flags & (DRIVE_ATA|DRIVE_OLD)) 241 == 0 || 242 (st0 & WDCS_DRDY)) && 243 ((chp->ch_drive[1].drive_flags & (DRIVE_ATA|DRIVE_OLD)) 244 == 0 || 245 (st1 & WDCS_DRDY))) 246 break; 247 tsleep(¶ms, PRIBIO, "atadrdy", 1); 248 } 249 if ((st0 & WDCS_DRDY) == 0) 250 chp->ch_drive[0].drive_flags &= ~(DRIVE_ATA|DRIVE_OLD); 251 if ((st1 & WDCS_DRDY) == 0) 252 chp->ch_drive[1].drive_flags &= ~(DRIVE_ATA|DRIVE_OLD); 253 254 WDCDEBUG_PRINT(("%s:%d: wait DRDY st0 0x%x st1 0x%x\n", 255 wdc->sc_dev.dv_xname, 256 chp->ch_channel, st0, st1), DEBUG_PROBE); 257 258 /* Wait a bit, some devices are weird just after a reset. */ 259 delay(5000); 260 261 for (i = 0; i < 2; i++) { 262 /* XXX This should be done by other code. */ 263 chp->ch_drive[i].chnl_softc = chp; 264 chp->ch_drive[i].drive = i; 265 266 /* 267 * Init error counter so that an error withing the first xfers 268 * will trigger a downgrade 269 */ 270 chp->ch_drive[i].n_dmaerrs = NERRS_MAX-1; 271 272 /* If controller can't do 16bit flag the drives as 32bit */ 273 if ((wdc->cap & 274 (WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32)) == 275 WDC_CAPABILITY_DATA32) 276 chp->ch_drive[i].drive_flags |= DRIVE_CAP32; 277 if ((chp->ch_drive[i].drive_flags & DRIVE) == 0) 278 continue; 279 280 /* Shortcut in case we've been shutdown */ 281 if (chp->ch_flags & WDCF_SHUTDOWN) 282 return; 283 284 /* issue an identify, to try to detect ghosts */ 285 error = ata_get_params(&chp->ch_drive[i], 286 AT_WAIT | AT_POLL, ¶ms); 287 if (error != CMD_OK) { 288 tsleep(¶ms, PRIBIO, "atacnf", mstohz(1000)); 289 290 /* Shortcut in case we've been shutdown */ 291 if (chp->ch_flags & WDCF_SHUTDOWN) 292 return; 293 294 error = ata_get_params(&chp->ch_drive[i], 295 AT_WAIT | AT_POLL, ¶ms); 296 } 297 if (error == CMD_OK) { 298 /* If IDENTIFY succeeded, this is not an OLD ctrl */ 299 chp->ch_drive[0].drive_flags &= ~DRIVE_OLD; 300 chp->ch_drive[1].drive_flags &= ~DRIVE_OLD; 301 } else { 302 chp->ch_drive[i].drive_flags &= 303 ~(DRIVE_ATA | DRIVE_ATAPI); 304 WDCDEBUG_PRINT(("%s:%d:%d: IDENTIFY failed (%d)\n", 305 wdc->sc_dev.dv_xname, 306 chp->ch_channel, i, error), DEBUG_PROBE); 307 if ((chp->ch_drive[i].drive_flags & DRIVE_OLD) == 0) 308 continue; 309 /* 310 * Pre-ATA drive ? 311 * Test registers writability (Error register not 312 * writable, but cyllo is), then try an ATA command. 313 */ 314 if (wdc->cap & WDC_CAPABILITY_SELECT) 315 wdc->select(chp,i); 316 bus_space_write_1(chp->cmd_iot, 317 chp->cmd_iohs[wd_sdh], 0, WDSD_IBM | (i << 4)); 318 delay(10); /* 400ns delay */ 319 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 320 0, 0x58); 321 bus_space_write_1(chp->cmd_iot, 322 chp->cmd_iohs[wd_cyl_lo], 0, 0xa5); 323 if (bus_space_read_1(chp->cmd_iot, 324 chp->cmd_iohs[wd_error], 0) == 0x58 || 325 bus_space_read_1(chp->cmd_iot, 326 chp->cmd_iohs[wd_cyl_lo], 0) != 0xa5) { 327 WDCDEBUG_PRINT(("%s:%d:%d: register " 328 "writability failed\n", 329 wdc->sc_dev.dv_xname, 330 chp->ch_channel, i), DEBUG_PROBE); 331 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 332 continue; 333 } 334 if (wdc_wait_for_ready(chp, 10000, 0) == WDCWAIT_TOUT) { 335 WDCDEBUG_PRINT(("%s:%d:%d: not ready\n", 336 wdc->sc_dev.dv_xname, 337 chp->ch_channel, i), DEBUG_PROBE); 338 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 339 continue; 340 } 341 bus_space_write_1(chp->cmd_iot, 342 chp->cmd_iohs[wd_command], 0, WDCC_RECAL); 343 delay(10); /* 400ns delay */ 344 if (wdc_wait_for_ready(chp, 10000, 0) == WDCWAIT_TOUT) { 345 WDCDEBUG_PRINT(("%s:%d:%d: WDCC_RECAL failed\n", 346 wdc->sc_dev.dv_xname, 347 chp->ch_channel, i), DEBUG_PROBE); 348 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 349 } else { 350 chp->ch_drive[0].drive_flags &= 351 ~(DRIVE_ATA | DRIVE_ATAPI); 352 chp->ch_drive[1].drive_flags &= 353 ~(DRIVE_ATA | DRIVE_ATAPI); 354 } 355 } 356 } 357 } 358 359 void 360 atabusconfig(struct atabus_softc *atabus_sc) 361 { 362 struct wdc_channel *chp = atabus_sc->sc_chan; 363 struct wdc_softc *wdc = chp->ch_wdc; 364 int i; 365 struct atabus_initq *atabus_initq = NULL; 366 367 /* Probe for the drives. */ 368 (*wdc->drv_probe)(chp); 369 370 WDCDEBUG_PRINT(("atabusattach: ch_drive_flags 0x%x 0x%x\n", 371 chp->ch_drive[0].drive_flags, chp->ch_drive[1].drive_flags), 372 DEBUG_PROBE); 373 374 /* If no drives, abort here */ 375 if ((chp->ch_drive[0].drive_flags & DRIVE) == 0 && 376 (chp->ch_drive[1].drive_flags & DRIVE) == 0) 377 goto out; 378 379 /* Shortcut in case we've been shutdown */ 380 if (chp->ch_flags & WDCF_SHUTDOWN) 381 goto out; 382 383 /* Make sure the devices probe in atabus order to avoid jitter. */ 384 simple_lock(&atabus_interlock); 385 while(1) { 386 atabus_initq = TAILQ_FIRST(&atabus_initq_head); 387 if (atabus_initq->atabus_sc == atabus_sc) 388 break; 389 ltsleep(&atabus_initq_head, PRIBIO, "ata_initq", 0, 390 &atabus_interlock); 391 } 392 simple_unlock(&atabus_interlock); 393 394 /* 395 * Attach an ATAPI bus, if needed. 396 */ 397 if ((chp->ch_drive[0].drive_flags & DRIVE_ATAPI) || 398 (chp->ch_drive[1].drive_flags & DRIVE_ATAPI)) { 399 #if NATAPIBUS > 0 400 wdc_atapibus_attach(atabus_sc); 401 #else 402 /* 403 * Fake the autoconfig "not configured" message 404 */ 405 aprint_normal("atapibus at %s not configured\n", 406 wdc->sc_dev.dv_xname); 407 chp->atapibus = NULL; 408 chp->ch_drive[0].drive_flags &= ~DRIVE_ATAPI; 409 chp->ch_drive[1].drive_flags &= ~DRIVE_ATAPI; 410 #endif 411 } 412 413 for (i = 0; i < 2; i++) { 414 struct ata_device adev; 415 if ((chp->ch_drive[i].drive_flags & 416 (DRIVE_ATA | DRIVE_OLD)) == 0) { 417 continue; 418 } 419 memset(&adev, 0, sizeof(struct ata_device)); 420 adev.adev_bustype = &wdc_ata_bustype; 421 adev.adev_channel = chp->ch_channel; 422 adev.adev_openings = 1; 423 adev.adev_drv_data = &chp->ch_drive[i]; 424 chp->ata_drives[i] = config_found(&atabus_sc->sc_dev, 425 &adev, ataprint); 426 if (chp->ata_drives[i] != NULL) 427 ata_probe_caps(&chp->ch_drive[i]); 428 else 429 chp->ch_drive[i].drive_flags &= 430 ~(DRIVE_ATA | DRIVE_OLD); 431 } 432 433 /* now that we know the drives, the controller can set its modes */ 434 if (wdc->cap & WDC_CAPABILITY_MODE) { 435 wdc->set_modes(chp); 436 ata_print_modes(chp); 437 } 438 #if NATARAID > 0 439 if (wdc->cap & WDC_CAPABILITY_RAID) 440 for (i = 0; i < 2; i++) 441 if (chp->ata_drives[i] != NULL) 442 ata_raid_check_component(chp->ata_drives[i]); 443 #endif /* NATARAID > 0 */ 444 445 /* 446 * reset drive_flags for unattached devices, reset state for attached 447 * ones 448 */ 449 for (i = 0; i < 2; i++) { 450 if (chp->ch_drive[i].drv_softc == NULL) 451 chp->ch_drive[i].drive_flags = 0; 452 else 453 chp->ch_drive[i].state = 0; 454 } 455 456 out: 457 if (atabus_initq == NULL) { 458 simple_lock(&atabus_interlock); 459 while(1) { 460 atabus_initq = TAILQ_FIRST(&atabus_initq_head); 461 if (atabus_initq->atabus_sc == atabus_sc) 462 break; 463 ltsleep(&atabus_initq_head, PRIBIO, "ata_initq", 0, 464 &atabus_interlock); 465 } 466 simple_unlock(&atabus_interlock); 467 } 468 simple_lock(&atabus_interlock); 469 TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); 470 simple_unlock(&atabus_interlock); 471 472 free(atabus_initq, M_DEVBUF); 473 wakeup(&atabus_initq_head); 474 475 wdc_delref(chp); 476 477 config_pending_decr(); 478 } 479 480 int 481 wdcprobe(struct wdc_channel *chp) 482 { 483 484 return (wdcprobe1(chp, 1)); 485 } 486 487 static int 488 wdcprobe1(struct wdc_channel *chp, int poll) 489 { 490 struct wdc_softc *wdc = chp->ch_wdc; 491 u_int8_t st0, st1, sc, sn, cl, ch; 492 u_int8_t ret_value = 0x03; 493 u_int8_t drive; 494 int s; 495 496 /* 497 * Sanity check to see if the wdc channel responds at all. 498 */ 499 500 s = splbio(); 501 if (wdc == NULL || 502 (wdc->cap & WDC_CAPABILITY_NO_EXTRA_RESETS) == 0) { 503 504 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 505 wdc->select(chp,0); 506 507 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 508 WDSD_IBM); 509 delay(10); /* 400ns delay */ 510 st0 = bus_space_read_1(chp->cmd_iot, 511 chp->cmd_iohs[wd_status], 0); 512 513 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 514 wdc->select(chp,1); 515 516 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 517 WDSD_IBM | 0x10); 518 delay(10); /* 400ns delay */ 519 st1 = bus_space_read_1(chp->cmd_iot, 520 chp->cmd_iohs[wd_status], 0); 521 522 WDCDEBUG_PRINT(("%s:%d: before reset, st0=0x%x, st1=0x%x\n", 523 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 524 chp->ch_channel, st0, st1), DEBUG_PROBE); 525 526 if (st0 == 0xff || st0 == WDSD_IBM) 527 ret_value &= ~0x01; 528 if (st1 == 0xff || st1 == (WDSD_IBM | 0x10)) 529 ret_value &= ~0x02; 530 /* Register writability test, drive 0. */ 531 if (ret_value & 0x01) { 532 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 533 wdc->select(chp,0); 534 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 535 0, WDSD_IBM); 536 bus_space_write_1(chp->cmd_iot, 537 chp->cmd_iohs[wd_cyl_lo], 0, 0x02); 538 cl = bus_space_read_1(chp->cmd_iot, 539 chp->cmd_iohs[wd_cyl_lo], 0); 540 if (cl != 0x02) { 541 WDCDEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 542 "got 0x%x != 0x02\n", 543 wdc != NULL ? 544 wdc->sc_dev.dv_xname : "wdcprobe", 545 chp->ch_channel, cl), 546 DEBUG_PROBE); 547 ret_value &= ~0x01; 548 } 549 bus_space_write_1(chp->cmd_iot, 550 chp->cmd_iohs[wd_cyl_lo], 0, 0x01); 551 cl = bus_space_read_1(chp->cmd_iot, 552 chp->cmd_iohs[wd_cyl_lo], 0); 553 if (cl != 0x01) { 554 WDCDEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 555 "got 0x%x != 0x01\n", 556 wdc != NULL ? 557 wdc->sc_dev.dv_xname : "wdcprobe", 558 chp->ch_channel, cl), 559 DEBUG_PROBE); 560 ret_value &= ~0x01; 561 } 562 bus_space_write_1(chp->cmd_iot, 563 chp->cmd_iohs[wd_sector], 0, 0x01); 564 cl = bus_space_read_1(chp->cmd_iot, 565 chp->cmd_iohs[wd_sector], 0); 566 if (cl != 0x01) { 567 WDCDEBUG_PRINT(("%s:%d drive 0 wd_sector: " 568 "got 0x%x != 0x01\n", 569 wdc != NULL ? 570 wdc->sc_dev.dv_xname : "wdcprobe", 571 chp->ch_channel, cl), 572 DEBUG_PROBE); 573 ret_value &= ~0x01; 574 } 575 bus_space_write_1(chp->cmd_iot, 576 chp->cmd_iohs[wd_sector], 0, 0x02); 577 cl = bus_space_read_1(chp->cmd_iot, 578 chp->cmd_iohs[wd_sector], 0); 579 if (cl != 0x02) { 580 WDCDEBUG_PRINT(("%s:%d drive 0 wd_sector: " 581 "got 0x%x != 0x02\n", 582 wdc != NULL ? 583 wdc->sc_dev.dv_xname : "wdcprobe", 584 chp->ch_channel, cl), 585 DEBUG_PROBE); 586 ret_value &= ~0x01; 587 } 588 cl = bus_space_read_1(chp->cmd_iot, 589 chp->cmd_iohs[wd_cyl_lo], 0); 590 if (cl != 0x01) { 591 WDCDEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo(2): " 592 "got 0x%x != 0x01\n", 593 wdc != NULL ? 594 wdc->sc_dev.dv_xname : "wdcprobe", 595 chp->ch_channel, cl), 596 DEBUG_PROBE); 597 ret_value &= ~0x01; 598 } 599 } 600 /* Register writability test, drive 1. */ 601 if (ret_value & 0x02) { 602 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 603 wdc->select(chp,1); 604 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 605 0, WDSD_IBM | 0x10); 606 bus_space_write_1(chp->cmd_iot, 607 chp->cmd_iohs[wd_cyl_lo], 0, 0x02); 608 cl = bus_space_read_1(chp->cmd_iot, 609 chp->cmd_iohs[wd_cyl_lo], 0); 610 if (cl != 0x02) { 611 WDCDEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 612 "got 0x%x != 0x02\n", 613 wdc != NULL ? 614 wdc->sc_dev.dv_xname : "wdcprobe", 615 chp->ch_channel, cl), 616 DEBUG_PROBE); 617 ret_value &= ~0x02; 618 } 619 bus_space_write_1(chp->cmd_iot, 620 chp->cmd_iohs[wd_cyl_lo], 0, 0x01); 621 cl = bus_space_read_1(chp->cmd_iot, 622 chp->cmd_iohs[wd_cyl_lo], 0); 623 if (cl != 0x01) { 624 WDCDEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 625 "got 0x%x != 0x01\n", 626 wdc != NULL ? 627 wdc->sc_dev.dv_xname : "wdcprobe", 628 chp->ch_channel, cl), 629 DEBUG_PROBE); 630 ret_value &= ~0x02; 631 } 632 bus_space_write_1(chp->cmd_iot, 633 chp->cmd_iohs[wd_sector], 0, 0x01); 634 cl = bus_space_read_1(chp->cmd_iot, 635 chp->cmd_iohs[wd_sector], 0); 636 if (cl != 0x01) { 637 WDCDEBUG_PRINT(("%s:%d drive 1 wd_sector: " 638 "got 0x%x != 0x01\n", 639 wdc != NULL ? 640 wdc->sc_dev.dv_xname : "wdcprobe", 641 chp->ch_channel, cl), 642 DEBUG_PROBE); 643 ret_value &= ~0x02; 644 } 645 bus_space_write_1(chp->cmd_iot, 646 chp->cmd_iohs[wd_sector], 0, 0x02); 647 cl = bus_space_read_1(chp->cmd_iot, 648 chp->cmd_iohs[wd_sector], 0); 649 if (cl != 0x02) { 650 WDCDEBUG_PRINT(("%s:%d drive 1 wd_sector: " 651 "got 0x%x != 0x02\n", 652 wdc != NULL ? 653 wdc->sc_dev.dv_xname : "wdcprobe", 654 chp->ch_channel, cl), 655 DEBUG_PROBE); 656 ret_value &= ~0x02; 657 } 658 cl = bus_space_read_1(chp->cmd_iot, 659 chp->cmd_iohs[wd_cyl_lo], 0); 660 if (cl != 0x01) { 661 WDCDEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo(2): " 662 "got 0x%x != 0x01\n", 663 wdc != NULL ? 664 wdc->sc_dev.dv_xname : "wdcprobe", 665 chp->ch_channel, cl), 666 DEBUG_PROBE); 667 ret_value &= ~0x02; 668 } 669 } 670 671 if (ret_value == 0) { 672 splx(s); 673 return 0; 674 } 675 } 676 677 678 #if 0 /* XXX this break some ATA or ATAPI devices */ 679 /* 680 * reset bus. Also send an ATAPI_RESET to devices, in case there are 681 * ATAPI device out there which don't react to the bus reset 682 */ 683 if (ret_value & 0x01) { 684 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 685 wdc->select(chp,0); 686 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 687 0, WDSD_IBM); 688 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, 689 ATAPI_SOFT_RESET); 690 } 691 if (ret_value & 0x02) { 692 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 693 wdc->select(chp,0); 694 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 695 0, WDSD_IBM | 0x10); 696 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, 697 ATAPI_SOFT_RESET); 698 } 699 700 delay(5000); 701 #endif 702 703 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_SELECT)) 704 wdc->select(chp,0); 705 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, WDSD_IBM); 706 delay(10); /* 400ns delay */ 707 /* assert SRST, wait for reset to complete */ 708 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 709 WDCTL_RST | WDCTL_IDS | WDCTL_4BIT); 710 DELAY(1000); 711 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 712 WDCTL_IDS | WDCTL_4BIT); 713 DELAY(2000); 714 (void) bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 0); 715 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 716 delay(10); /* 400ns delay */ 717 /* ACK interrupt in case there is one pending left (Promise ATA100) */ 718 if (wdc != NULL && (wdc->cap & WDC_CAPABILITY_IRQACK)) 719 wdc->irqack(chp); 720 splx(s); 721 722 ret_value = __wdcwait_reset(chp, ret_value, poll); 723 WDCDEBUG_PRINT(("%s:%d: after reset, ret_value=0x%d\n", 724 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", chp->ch_channel, 725 ret_value), DEBUG_PROBE); 726 727 /* if reset failed, there's nothing here */ 728 if (ret_value == 0) 729 return 0; 730 731 /* 732 * Test presence of drives. First test register signatures looking 733 * for ATAPI devices. If it's not an ATAPI and reset said there may 734 * be something here assume it's ATA or OLD. Ghost will be killed 735 * later in attach routine. 736 */ 737 for (drive = 0; drive < 2; drive++) { 738 if ((ret_value & (0x01 << drive)) == 0) 739 continue; 740 if (wdc != NULL && wdc->cap & WDC_CAPABILITY_SELECT) 741 wdc->select(chp,drive); 742 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 743 WDSD_IBM | (drive << 4)); 744 delay(10); /* 400ns delay */ 745 /* Save registers contents */ 746 sc = bus_space_read_1(chp->cmd_iot, 747 chp->cmd_iohs[wd_seccnt], 0); 748 sn = bus_space_read_1(chp->cmd_iot, 749 chp->cmd_iohs[wd_sector], 0); 750 cl = bus_space_read_1(chp->cmd_iot, 751 chp->cmd_iohs[wd_cyl_lo], 0); 752 ch = bus_space_read_1(chp->cmd_iot, 753 chp->cmd_iohs[wd_cyl_hi], 0); 754 755 WDCDEBUG_PRINT(("%s:%d:%d: after reset, sc=0x%x sn=0x%x " 756 "cl=0x%x ch=0x%x\n", 757 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 758 chp->ch_channel, drive, sc, sn, cl, ch), DEBUG_PROBE); 759 /* 760 * sc & sn are supposted to be 0x1 for ATAPI but in some cases 761 * we get wrong values here, so ignore it. 762 */ 763 if (cl == 0x14 && ch == 0xeb) { 764 chp->ch_drive[drive].drive_flags |= DRIVE_ATAPI; 765 } else { 766 chp->ch_drive[drive].drive_flags |= DRIVE_ATA; 767 if (wdc == NULL || 768 (wdc->cap & WDC_CAPABILITY_PREATA) != 0) 769 chp->ch_drive[drive].drive_flags |= DRIVE_OLD; 770 } 771 } 772 return (ret_value); 773 } 774 775 void 776 wdcattach(struct wdc_channel *chp) 777 { 778 struct wdc_softc *wdc = chp->ch_wdc; 779 static int inited = 0; 780 781 if (chp->ch_flags & WDCF_DISABLED) 782 return; 783 784 /* default data transfer methods */ 785 if (!wdc->datain_pio) 786 wdc->datain_pio = wdc_datain_pio; 787 if (!wdc->dataout_pio) 788 wdc->dataout_pio = wdc_dataout_pio; 789 790 /* initialise global data */ 791 callout_init(&chp->ch_callout); 792 if (wdc->drv_probe == NULL) 793 wdc->drv_probe = wdc_drvprobe; 794 if (inited == 0) { 795 /* Initialize the ata_xfer pool. */ 796 pool_init(&wdc_xfer_pool, sizeof(struct ata_xfer), 0, 797 0, 0, "wdcspl", NULL); 798 inited++; 799 } 800 TAILQ_INIT(&chp->ch_queue->queue_xfer); 801 chp->ch_queue->queue_freeze = 0; 802 chp->ch_queue->active_xfer = NULL; 803 804 chp->atabus = config_found(&wdc->sc_dev, chp, atabusprint); 805 } 806 807 int 808 wdcactivate(struct device *self, enum devact act) 809 { 810 struct wdc_softc *wdc = (struct wdc_softc *)self; 811 int s, i, error = 0; 812 813 s = splbio(); 814 switch (act) { 815 case DVACT_ACTIVATE: 816 error = EOPNOTSUPP; 817 break; 818 819 case DVACT_DEACTIVATE: 820 for (i = 0; i < wdc->nchannels; i++) { 821 error = config_deactivate(wdc->channels[i]->atabus); 822 if (error) 823 break; 824 } 825 break; 826 } 827 splx(s); 828 return (error); 829 } 830 831 int 832 wdcdetach(struct device *self, int flags) 833 { 834 struct wdc_softc *wdc = (struct wdc_softc *)self; 835 struct wdc_channel *chp; 836 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 837 int i, error = 0; 838 839 for (i = 0; i < wdc->nchannels; i++) { 840 chp = wdc->channels[i]; 841 WDCDEBUG_PRINT(("wdcdetach: %s: detaching %s\n", 842 wdc->sc_dev.dv_xname, chp->atabus->dv_xname), DEBUG_DETACH); 843 error = config_detach(chp->atabus, flags); 844 if (error) 845 break; 846 } 847 if (adapt->adapt_refcnt != 0) { 848 #ifdef DIAGNOSTIC 849 printf("wdcdetach: refcnt should be 0 here??\n"); 850 #endif 851 (void) (*adapt->adapt_enable)(&wdc->sc_dev, 0); 852 } 853 return (error); 854 } 855 856 /* 857 * Start I/O on a controller, for the given channel. 858 * The first xfer may be not for our channel if the channel queues 859 * are shared. 860 */ 861 void 862 wdcstart(struct wdc_channel *chp) 863 { 864 struct wdc_softc *wdc = chp->ch_wdc; 865 struct ata_xfer *xfer; 866 867 #ifdef WDC_DIAGNOSTIC 868 int spl1, spl2; 869 870 spl1 = splbio(); 871 spl2 = splbio(); 872 if (spl2 != spl1) { 873 printf("wdcstart: not at splbio()\n"); 874 panic("wdcstart"); 875 } 876 splx(spl2); 877 splx(spl1); 878 #endif /* WDC_DIAGNOSTIC */ 879 880 /* is there a xfer ? */ 881 if ((xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer)) == NULL) 882 return; 883 884 /* adjust chp, in case we have a shared queue */ 885 chp = xfer->c_chp; 886 887 if (chp->ch_queue->active_xfer != NULL) { 888 return; /* channel aleady active */ 889 } 890 if (__predict_false(chp->ch_queue->queue_freeze > 0)) { 891 return; /* queue froozen */ 892 } 893 #ifdef DIAGNOSTIC 894 if ((chp->ch_flags & WDCF_IRQ_WAIT) != 0) 895 panic("wdcstart: channel waiting for irq"); 896 #endif 897 if (wdc->cap & WDC_CAPABILITY_HWLOCK) 898 if (!(*wdc->claim_hw)(chp, 0)) 899 return; 900 901 WDCDEBUG_PRINT(("wdcstart: xfer %p channel %d drive %d\n", xfer, 902 chp->ch_channel, xfer->c_drive), DEBUG_XFERS); 903 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_RESET) { 904 chp->ch_drive[xfer->c_drive].drive_flags &= ~DRIVE_RESET; 905 chp->ch_drive[xfer->c_drive].state = 0; 906 } 907 chp->ch_queue->active_xfer = xfer; 908 TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); 909 910 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 911 KASSERT(xfer->c_flags & C_POLL); 912 xfer->c_start(chp, xfer); 913 } 914 915 /* restart an interrupted I/O */ 916 void 917 wdcrestart(void *v) 918 { 919 struct wdc_channel *chp = v; 920 int s; 921 922 s = splbio(); 923 wdcstart(chp); 924 splx(s); 925 } 926 927 928 /* 929 * Interrupt routine for the controller. Acknowledge the interrupt, check for 930 * errors on the current operation, mark it done if necessary, and start the 931 * next request. Also check for a partially done transfer, and continue with 932 * the next chunk if so. 933 */ 934 int 935 wdcintr(void *arg) 936 { 937 struct wdc_channel *chp = arg; 938 struct wdc_softc *wdc = chp->ch_wdc; 939 struct ata_xfer *xfer; 940 int ret; 941 942 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 943 WDCDEBUG_PRINT(("wdcintr: deactivated controller\n"), 944 DEBUG_INTR); 945 return (0); 946 } 947 if ((chp->ch_flags & WDCF_IRQ_WAIT) == 0) { 948 WDCDEBUG_PRINT(("wdcintr: inactive controller\n"), DEBUG_INTR); 949 /* try to clear the pending interrupt anyway */ 950 (void)bus_space_read_1(chp->cmd_iot, 951 chp->cmd_iohs[wd_status], 0); 952 return (0); 953 } 954 955 WDCDEBUG_PRINT(("wdcintr\n"), DEBUG_INTR); 956 xfer = chp->ch_queue->active_xfer; 957 #ifdef DIAGNOSTIC 958 if (xfer == NULL) 959 panic("wdcintr: no xfer"); 960 #endif 961 if (chp->ch_flags & WDCF_DMA_WAIT) { 962 wdc->dma_status = 963 (*wdc->dma_finish)(wdc->dma_arg, chp->ch_channel, 964 xfer->c_drive, WDC_DMAEND_END); 965 if (wdc->dma_status & WDC_DMAST_NOIRQ) { 966 /* IRQ not for us, not detected by DMA engine */ 967 return 0; 968 } 969 chp->ch_flags &= ~WDCF_DMA_WAIT; 970 } 971 chp->ch_flags &= ~WDCF_IRQ_WAIT; 972 ret = xfer->c_intr(chp, xfer, 1); 973 if (ret == 0) /* irq was not for us, still waiting for irq */ 974 chp->ch_flags |= WDCF_IRQ_WAIT; 975 return (ret); 976 } 977 978 /* Put all disk in RESET state */ 979 void 980 wdc_reset_drive(struct ata_drive_datas *drvp, int flags) 981 { 982 struct wdc_channel *chp = drvp->chnl_softc; 983 struct wdc_softc *wdc = chp->ch_wdc; 984 WDCDEBUG_PRINT(("ata_reset_channel %s:%d for drive %d\n", 985 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 986 DEBUG_FUNCS); 987 988 989 wdc_reset_channel(chp, flags); 990 } 991 992 void 993 wdc_reset_channel(struct wdc_channel *chp, int flags) 994 { 995 TAILQ_HEAD(, ata_xfer) reset_xfer; 996 struct ata_xfer *xfer, *next_xfer; 997 int drive; 998 999 chp->ch_queue->queue_freeze++; 1000 TAILQ_INIT(&reset_xfer); 1001 1002 /* if we can poll or wait it's OK, otherwise wake up the kernel 1003 * thread 1004 */ 1005 if ((flags & (AT_POLL | AT_WAIT)) == 0) { 1006 if (chp->ch_flags & WDCF_TH_RESET) { 1007 /* no need to schedule a reset more than one time */ 1008 return; 1009 } 1010 chp->ch_flags |= WDCF_TH_RESET; 1011 chp->ch_reset_flags = flags & (AT_RST_EMERG | AT_RST_NOCMD); 1012 wakeup(&chp->ch_thread); 1013 return; 1014 } 1015 1016 chp->ch_flags &= ~WDCF_IRQ_WAIT; 1017 /* 1018 * if the current command if on an ATAPI device, issue a 1019 * ATAPI_SOFT_RESET 1020 */ 1021 xfer = chp->ch_queue->active_xfer; 1022 if (xfer && xfer->c_chp == chp && (xfer->c_flags & C_ATAPI)) { 1023 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 1024 if (flags & AT_WAIT) 1025 tsleep(&flags, PRIBIO, "atardl", mstohz(1) + 1); 1026 else 1027 delay(1000); 1028 } 1029 1030 /* reset the channel */ 1031 if (flags & AT_WAIT) 1032 (void) wdcreset(chp, RESET_SLEEP); 1033 else 1034 (void) wdcreset(chp, RESET_POLL); 1035 1036 /* 1037 * wait a bit after reset; in case the DMA engines needs some time 1038 * to recover. 1039 */ 1040 if (flags & AT_WAIT) 1041 tsleep(&flags, PRIBIO, "atardl", mstohz(1) + 1); 1042 else 1043 delay(1000); 1044 /* 1045 * look for pending xfers. If we have a shared queue, we'll also reset 1046 * the other channel if the current xfer is running on it. 1047 * Then we'll dequeue only the xfers for this channel. 1048 */ 1049 if ((flags & AT_RST_NOCMD) == 0) { 1050 /* 1051 * move all xfers queued for this channel to the reset queue, 1052 * and then process the current xfer and then the reset queue. 1053 * We have to use a temporary queue because c_kill_xfer() 1054 * may requeue commands. 1055 */ 1056 for (xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); 1057 xfer != NULL; xfer = next_xfer) { 1058 next_xfer = TAILQ_NEXT(xfer, c_xferchain); 1059 if (xfer->c_chp != chp) 1060 continue; 1061 TAILQ_REMOVE(&chp->ch_queue->queue_xfer, 1062 xfer, c_xferchain); 1063 TAILQ_INSERT_TAIL(&reset_xfer, xfer, c_xferchain); 1064 } 1065 xfer = chp->ch_queue->active_xfer; 1066 if (xfer) { 1067 if (xfer->c_chp != chp) 1068 wdc_reset_channel(xfer->c_chp, flags); 1069 else { 1070 callout_stop(&chp->ch_callout); 1071 /* 1072 * If we're waiting for DMA, stop the 1073 * DMA engine 1074 */ 1075 if (chp->ch_flags & WDCF_DMA_WAIT) { 1076 (*chp->ch_wdc->dma_finish)( 1077 chp->ch_wdc->dma_arg, 1078 chp->ch_channel, 1079 xfer->c_drive, 1080 WDC_DMAEND_ABRT_QUIET); 1081 chp->ch_flags &= ~WDCF_DMA_WAIT; 1082 } 1083 chp->ch_queue->active_xfer = NULL; 1084 if ((flags & AT_RST_EMERG) == 0) 1085 xfer->c_kill_xfer( 1086 chp, xfer, KILL_RESET); 1087 } 1088 } 1089 1090 for (xfer = TAILQ_FIRST(&reset_xfer); 1091 xfer != NULL; xfer = next_xfer) { 1092 next_xfer = TAILQ_NEXT(xfer, c_xferchain); 1093 TAILQ_REMOVE(&reset_xfer, xfer, c_xferchain); 1094 if ((flags & AT_RST_EMERG) == 0) 1095 xfer->c_kill_xfer(chp, xfer, KILL_RESET); 1096 } 1097 } 1098 for (drive = 0; drive < 2; drive++) { 1099 chp->ch_drive[drive].state = 0; 1100 } 1101 chp->ch_flags &= ~WDCF_TH_RESET; 1102 if ((flags & AT_RST_EMERG) == 0) { 1103 chp->ch_queue->queue_freeze--; 1104 wdcstart(chp); 1105 } else { 1106 /* make sure that we can use polled commands */ 1107 TAILQ_INIT(&chp->ch_queue->queue_xfer); 1108 chp->ch_queue->queue_freeze = 0; 1109 chp->ch_queue->active_xfer = NULL; 1110 } 1111 } 1112 1113 int 1114 wdcreset(struct wdc_channel *chp, int poll) 1115 { 1116 struct wdc_softc *wdc = chp->ch_wdc; 1117 int drv_mask1, drv_mask2; 1118 int s = 0; 1119 1120 if (wdc->cap & WDC_CAPABILITY_SELECT) 1121 wdc->select(chp,0); 1122 if (poll != RESET_SLEEP) 1123 s = splbio(); 1124 /* master */ 1125 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, WDSD_IBM); 1126 delay(10); /* 400ns delay */ 1127 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1128 WDCTL_RST | WDCTL_IDS | WDCTL_4BIT); 1129 delay(2000); 1130 (void) bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 0); 1131 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1132 WDCTL_4BIT | WDCTL_IDS); 1133 delay(10); /* 400ns delay */ 1134 if (poll != RESET_SLEEP) { 1135 if (wdc->cap & WDC_CAPABILITY_IRQACK) 1136 wdc->irqack(chp); 1137 splx(s); 1138 } 1139 1140 drv_mask1 = (chp->ch_drive[0].drive_flags & DRIVE) ? 0x01:0x00; 1141 drv_mask1 |= (chp->ch_drive[1].drive_flags & DRIVE) ? 0x02:0x00; 1142 drv_mask2 = __wdcwait_reset(chp, drv_mask1, 1143 (poll == RESET_SLEEP) ? 0 : 1); 1144 if (drv_mask2 != drv_mask1) { 1145 printf("%s channel %d: reset failed for", 1146 wdc->sc_dev.dv_xname, chp->ch_channel); 1147 if ((drv_mask1 & 0x01) != 0 && (drv_mask2 & 0x01) == 0) 1148 printf(" drive 0"); 1149 if ((drv_mask1 & 0x02) != 0 && (drv_mask2 & 0x02) == 0) 1150 printf(" drive 1"); 1151 printf("\n"); 1152 } 1153 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 1154 return (drv_mask1 != drv_mask2) ? 1 : 0; 1155 } 1156 1157 static int 1158 __wdcwait_reset(struct wdc_channel *chp, int drv_mask, int poll) 1159 { 1160 struct wdc_softc *wdc = chp->ch_wdc; 1161 int timeout, nloop; 1162 u_int8_t st0 = 0, st1 = 0; 1163 #ifdef WDCDEBUG 1164 u_int8_t sc0 = 0, sn0 = 0, cl0 = 0, ch0 = 0; 1165 u_int8_t sc1 = 0, sn1 = 0, cl1 = 0, ch1 = 0; 1166 #endif 1167 1168 if (poll) 1169 nloop = WDCNDELAY_RST; 1170 else 1171 nloop = WDC_RESET_WAIT * hz / 1000; 1172 /* wait for BSY to deassert */ 1173 for (timeout = 0; timeout < nloop; timeout++) { 1174 if ((drv_mask & 0x01) != 0) { 1175 if (wdc && wdc->cap & WDC_CAPABILITY_SELECT) 1176 wdc->select(chp,0); 1177 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 1178 0, WDSD_IBM); /* master */ 1179 delay(10); 1180 st0 = bus_space_read_1(chp->cmd_iot, 1181 chp->cmd_iohs[wd_status], 0); 1182 #ifdef WDCDEBUG 1183 sc0 = bus_space_read_1(chp->cmd_iot, 1184 chp->cmd_iohs[wd_seccnt], 0); 1185 sn0 = bus_space_read_1(chp->cmd_iot, 1186 chp->cmd_iohs[wd_sector], 0); 1187 cl0 = bus_space_read_1(chp->cmd_iot, 1188 chp->cmd_iohs[wd_cyl_lo], 0); 1189 ch0 = bus_space_read_1(chp->cmd_iot, 1190 chp->cmd_iohs[wd_cyl_hi], 0); 1191 #endif 1192 } 1193 if ((drv_mask & 0x02) != 0) { 1194 if (wdc && wdc->cap & WDC_CAPABILITY_SELECT) 1195 wdc->select(chp,1); 1196 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 1197 0, WDSD_IBM | 0x10); /* slave */ 1198 delay(10); 1199 st1 = bus_space_read_1(chp->cmd_iot, 1200 chp->cmd_iohs[wd_status], 0); 1201 #ifdef WDCDEBUG 1202 sc1 = bus_space_read_1(chp->cmd_iot, 1203 chp->cmd_iohs[wd_seccnt], 0); 1204 sn1 = bus_space_read_1(chp->cmd_iot, 1205 chp->cmd_iohs[wd_sector], 0); 1206 cl1 = bus_space_read_1(chp->cmd_iot, 1207 chp->cmd_iohs[wd_cyl_lo], 0); 1208 ch1 = bus_space_read_1(chp->cmd_iot, 1209 chp->cmd_iohs[wd_cyl_hi], 0); 1210 #endif 1211 } 1212 1213 if ((drv_mask & 0x01) == 0) { 1214 /* no master */ 1215 if ((drv_mask & 0x02) != 0 && (st1 & WDCS_BSY) == 0) { 1216 /* No master, slave is ready, it's done */ 1217 goto end; 1218 } 1219 } else if ((drv_mask & 0x02) == 0) { 1220 /* no slave */ 1221 if ((drv_mask & 0x01) != 0 && (st0 & WDCS_BSY) == 0) { 1222 /* No slave, master is ready, it's done */ 1223 goto end; 1224 } 1225 } else { 1226 /* Wait for both master and slave to be ready */ 1227 if ((st0 & WDCS_BSY) == 0 && (st1 & WDCS_BSY) == 0) { 1228 goto end; 1229 } 1230 } 1231 if (poll) 1232 delay(WDCDELAY); 1233 else 1234 tsleep(&nloop, PRIBIO, "atarst", 1); 1235 } 1236 /* Reset timed out. Maybe it's because drv_mask was not right */ 1237 if (st0 & WDCS_BSY) 1238 drv_mask &= ~0x01; 1239 if (st1 & WDCS_BSY) 1240 drv_mask &= ~0x02; 1241 end: 1242 WDCDEBUG_PRINT(("%s:%d:0: after reset, sc=0x%x sn=0x%x " 1243 "cl=0x%x ch=0x%x\n", 1244 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 1245 chp->ch_channel, sc0, sn0, cl0, ch0), DEBUG_PROBE); 1246 WDCDEBUG_PRINT(("%s:%d:1: after reset, sc=0x%x sn=0x%x " 1247 "cl=0x%x ch=0x%x\n", 1248 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 1249 chp->ch_channel, sc1, sn1, cl1, ch1), DEBUG_PROBE); 1250 1251 WDCDEBUG_PRINT(("%s:%d: wdcwait_reset() end, st0=0x%x st1=0x%x\n", 1252 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", chp->ch_channel, 1253 st0, st1), DEBUG_PROBE); 1254 1255 return drv_mask; 1256 } 1257 1258 /* 1259 * Wait for a drive to be !BSY, and have mask in its status register. 1260 * return -1 for a timeout after "timeout" ms. 1261 */ 1262 static int 1263 __wdcwait(struct wdc_channel *chp, int mask, int bits, int timeout) 1264 { 1265 struct wdc_softc *wdc = chp->ch_wdc; 1266 u_char status; 1267 int time = 0; 1268 1269 WDCDEBUG_PRINT(("__wdcwait %s:%d\n", wdc != NULL ? 1270 wdc->sc_dev.dv_xname : "none", 1271 chp->ch_channel), DEBUG_STATUS); 1272 chp->ch_error = 0; 1273 1274 timeout = timeout * 1000 / WDCDELAY; /* delay uses microseconds */ 1275 1276 for (;;) { 1277 chp->ch_status = status = 1278 bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_status], 0); 1279 if ((status & (WDCS_BSY | mask)) == bits) 1280 break; 1281 if (++time > timeout) { 1282 WDCDEBUG_PRINT(("__wdcwait: timeout (time=%d), " 1283 "status %x error %x (mask 0x%x bits 0x%x)\n", 1284 time, status, 1285 bus_space_read_1(chp->cmd_iot, 1286 chp->cmd_iohs[wd_error], 0), mask, bits), 1287 DEBUG_STATUS | DEBUG_PROBE | DEBUG_DELAY); 1288 return(WDCWAIT_TOUT); 1289 } 1290 delay(WDCDELAY); 1291 } 1292 #ifdef WDCDEBUG 1293 if (time > 0 && (wdcdebug_mask & DEBUG_DELAY)) 1294 printf("__wdcwait: did busy-wait, time=%d\n", time); 1295 #endif 1296 if (status & WDCS_ERR) 1297 chp->ch_error = bus_space_read_1(chp->cmd_iot, 1298 chp->cmd_iohs[wd_error], 0); 1299 #ifdef WDCNDELAY_DEBUG 1300 /* After autoconfig, there should be no long delays. */ 1301 if (!cold && time > WDCNDELAY_DEBUG) { 1302 struct ata_xfer *xfer = chp->ch_queue->active_xfer; 1303 if (xfer == NULL) 1304 printf("%s channel %d: warning: busy-wait took %dus\n", 1305 wdc->sc_dev.dv_xname, chp->ch_channel, 1306 WDCDELAY * time); 1307 else 1308 printf("%s:%d:%d: warning: busy-wait took %dus\n", 1309 wdc->sc_dev.dv_xname, chp->ch_channel, 1310 xfer->drive, 1311 WDCDELAY * time); 1312 } 1313 #endif 1314 return(WDCWAIT_OK); 1315 } 1316 1317 /* 1318 * Call __wdcwait(), polling using tsleep() or waking up the kernel 1319 * thread if possible 1320 */ 1321 int 1322 wdcwait(struct wdc_channel *chp, int mask, int bits, int timeout, int flags) 1323 { 1324 int error, i, timeout_hz = mstohz(timeout); 1325 1326 if (timeout_hz == 0 || 1327 (flags & (AT_WAIT | AT_POLL)) == AT_POLL) 1328 error = __wdcwait(chp, mask, bits, timeout); 1329 else { 1330 error = __wdcwait(chp, mask, bits, WDCDELAY_POLL); 1331 if (error != 0) { 1332 if ((chp->ch_flags & WDCF_TH_RUN) || 1333 (flags & AT_WAIT)) { 1334 /* 1335 * we're running in the channel thread 1336 * or some userland thread context 1337 */ 1338 for (i = 0; i < timeout_hz; i++) { 1339 if (__wdcwait(chp, mask, bits, 1340 WDCDELAY_POLL) == 0) { 1341 error = 0; 1342 break; 1343 } 1344 tsleep(&chp, PRIBIO, "atapoll", 1); 1345 } 1346 } else { 1347 /* 1348 * we're probably in interrupt context, 1349 * ask the thread to come back here 1350 */ 1351 #ifdef DIAGNOSTIC 1352 if (chp->ch_queue->queue_freeze > 0) 1353 panic("wdcwait: queue_freeze"); 1354 #endif 1355 chp->ch_queue->queue_freeze++; 1356 wakeup(&chp->ch_thread); 1357 return(WDCWAIT_THR); 1358 } 1359 } 1360 } 1361 return (error); 1362 } 1363 1364 1365 /* 1366 * Busy-wait for DMA to complete 1367 */ 1368 int 1369 wdc_dmawait(struct wdc_channel *chp, struct ata_xfer *xfer, int timeout) 1370 { 1371 struct wdc_softc *wdc = chp->ch_wdc; 1372 int time; 1373 1374 for (time = 0; time < timeout * 1000 / WDCDELAY; time++) { 1375 wdc->dma_status = 1376 (*wdc->dma_finish)(wdc->dma_arg, 1377 chp->ch_channel, xfer->c_drive, WDC_DMAEND_END); 1378 if ((wdc->dma_status & WDC_DMAST_NOIRQ) == 0) 1379 return 0; 1380 delay(WDCDELAY); 1381 } 1382 /* timeout, force a DMA halt */ 1383 wdc->dma_status = (*wdc->dma_finish)(wdc->dma_arg, 1384 chp->ch_channel, xfer->c_drive, WDC_DMAEND_ABRT); 1385 return 1; 1386 } 1387 1388 void 1389 wdctimeout(void *arg) 1390 { 1391 struct wdc_channel *chp = (struct wdc_channel *)arg; 1392 struct wdc_softc *wdc = chp->ch_wdc; 1393 struct ata_xfer *xfer = chp->ch_queue->active_xfer; 1394 int s; 1395 1396 WDCDEBUG_PRINT(("wdctimeout\n"), DEBUG_FUNCS); 1397 1398 s = splbio(); 1399 if ((chp->ch_flags & WDCF_IRQ_WAIT) != 0) { 1400 __wdcerror(chp, "lost interrupt"); 1401 printf("\ttype: %s tc_bcount: %d tc_skip: %d\n", 1402 (xfer->c_flags & C_ATAPI) ? "atapi" : "ata", 1403 xfer->c_bcount, 1404 xfer->c_skip); 1405 if (chp->ch_flags & WDCF_DMA_WAIT) { 1406 wdc->dma_status = 1407 (*wdc->dma_finish)(wdc->dma_arg, 1408 chp->ch_channel, xfer->c_drive, 1409 WDC_DMAEND_ABRT); 1410 chp->ch_flags &= ~WDCF_DMA_WAIT; 1411 } 1412 /* 1413 * Call the interrupt routine. If we just missed an interrupt, 1414 * it will do what's needed. Else, it will take the needed 1415 * action (reset the device). 1416 * Before that we need to reinstall the timeout callback, 1417 * in case it will miss another irq while in this transfer 1418 * We arbitray chose it to be 1s 1419 */ 1420 callout_reset(&chp->ch_callout, hz, wdctimeout, chp); 1421 xfer->c_flags |= C_TIMEOU; 1422 chp->ch_flags &= ~WDCF_IRQ_WAIT; 1423 xfer->c_intr(chp, xfer, 1); 1424 } else 1425 __wdcerror(chp, "missing untimeout"); 1426 splx(s); 1427 } 1428 1429 int 1430 wdc_exec_command(struct ata_drive_datas *drvp, struct ata_command *ata_c) 1431 { 1432 struct wdc_channel *chp = drvp->chnl_softc; 1433 struct wdc_softc *wdc = chp->ch_wdc; 1434 struct ata_xfer *xfer; 1435 int s, ret; 1436 1437 WDCDEBUG_PRINT(("wdc_exec_command %s:%d:%d\n", 1438 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 1439 DEBUG_FUNCS); 1440 1441 /* set up an xfer and queue. Wait for completion */ 1442 xfer = wdc_get_xfer(ata_c->flags & AT_WAIT ? WDC_CANSLEEP : 1443 WDC_NOSLEEP); 1444 if (xfer == NULL) { 1445 return ATACMD_TRY_AGAIN; 1446 } 1447 1448 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 1449 ata_c->flags |= AT_POLL; 1450 if (ata_c->flags & AT_POLL) 1451 xfer->c_flags |= C_POLL; 1452 xfer->c_drive = drvp->drive; 1453 xfer->c_databuf = ata_c->data; 1454 xfer->c_bcount = ata_c->bcount; 1455 xfer->c_cmd = ata_c; 1456 xfer->c_start = __wdccommand_start; 1457 xfer->c_intr = __wdccommand_intr; 1458 xfer->c_kill_xfer = __wdccommand_kill_xfer; 1459 1460 s = splbio(); 1461 wdc_exec_xfer(chp, xfer); 1462 #ifdef DIAGNOSTIC 1463 if ((ata_c->flags & AT_POLL) != 0 && 1464 (ata_c->flags & AT_DONE) == 0) 1465 panic("wdc_exec_command: polled command not done"); 1466 #endif 1467 if (ata_c->flags & AT_DONE) { 1468 ret = ATACMD_COMPLETE; 1469 } else { 1470 if (ata_c->flags & AT_WAIT) { 1471 while ((ata_c->flags & AT_DONE) == 0) { 1472 tsleep(ata_c, PRIBIO, "wdccmd", 0); 1473 } 1474 ret = ATACMD_COMPLETE; 1475 } else { 1476 ret = ATACMD_QUEUED; 1477 } 1478 } 1479 splx(s); 1480 return ret; 1481 } 1482 1483 static void 1484 __wdccommand_start(struct wdc_channel *chp, struct ata_xfer *xfer) 1485 { 1486 struct wdc_softc *wdc = chp->ch_wdc; 1487 int drive = xfer->c_drive; 1488 struct ata_command *ata_c = xfer->c_cmd; 1489 1490 WDCDEBUG_PRINT(("__wdccommand_start %s:%d:%d\n", 1491 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1492 DEBUG_FUNCS); 1493 1494 if (wdc->cap & WDC_CAPABILITY_SELECT) 1495 wdc->select(chp,drive); 1496 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1497 WDSD_IBM | (drive << 4)); 1498 switch(wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1499 ata_c->r_st_bmask, ata_c->timeout, ata_c->flags)) { 1500 case WDCWAIT_OK: 1501 break; 1502 case WDCWAIT_TOUT: 1503 ata_c->flags |= AT_TIMEOU; 1504 __wdccommand_done(chp, xfer); 1505 return; 1506 case WDCWAIT_THR: 1507 return; 1508 } 1509 if (ata_c->flags & AT_POLL) { 1510 /* polled command, disable interrupts */ 1511 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1512 WDCTL_4BIT | WDCTL_IDS); 1513 } 1514 wdccommand(chp, drive, ata_c->r_command, ata_c->r_cyl, ata_c->r_head, 1515 ata_c->r_sector, ata_c->r_count, ata_c->r_features); 1516 1517 if ((ata_c->flags & AT_POLL) == 0) { 1518 chp->ch_flags |= WDCF_IRQ_WAIT; /* wait for interrupt */ 1519 callout_reset(&chp->ch_callout, ata_c->timeout / 1000 * hz, 1520 wdctimeout, chp); 1521 return; 1522 } 1523 /* 1524 * Polled command. Wait for drive ready or drq. Done in intr(). 1525 * Wait for at last 400ns for status bit to be valid. 1526 */ 1527 delay(10); /* 400ns delay */ 1528 __wdccommand_intr(chp, xfer, 0); 1529 } 1530 1531 static int 1532 __wdccommand_intr(struct wdc_channel *chp, struct ata_xfer *xfer, int irq) 1533 { 1534 struct wdc_softc *wdc = chp->ch_wdc; 1535 struct ata_command *ata_c = xfer->c_cmd; 1536 int bcount = ata_c->bcount; 1537 char *data = ata_c->data; 1538 int wflags; 1539 1540 if ((ata_c->flags & (AT_WAIT | AT_POLL)) == (AT_WAIT | AT_POLL)) { 1541 /* both wait and poll, we can tsleep here */ 1542 wflags = AT_WAIT | AT_POLL; 1543 } else { 1544 wflags = AT_POLL; 1545 } 1546 1547 again: 1548 WDCDEBUG_PRINT(("__wdccommand_intr %s:%d:%d\n", 1549 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1550 DEBUG_INTR); 1551 /* 1552 * after a ATAPI_SOFT_RESET, the device will have released the bus. 1553 * Reselect again, it doesn't hurt for others commands, and the time 1554 * penalty for the extra regiter write is acceptable, 1555 * wdc_exec_command() isn't called often (mosly for autoconfig) 1556 */ 1557 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1558 WDSD_IBM | (xfer->c_drive << 4)); 1559 if ((ata_c->flags & AT_XFDONE) != 0) { 1560 /* 1561 * We have completed a data xfer. The drive should now be 1562 * in its initial state 1563 */ 1564 if (wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1565 ata_c->r_st_bmask, (irq == 0) ? ata_c->timeout : 0, 1566 wflags) == WDCWAIT_TOUT) { 1567 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 1568 return 0; /* IRQ was not for us */ 1569 ata_c->flags |= AT_TIMEOU; 1570 } 1571 goto out; 1572 } 1573 if (wdcwait(chp, ata_c->r_st_pmask, ata_c->r_st_pmask, 1574 (irq == 0) ? ata_c->timeout : 0, wflags) == WDCWAIT_TOUT) { 1575 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 1576 return 0; /* IRQ was not for us */ 1577 ata_c->flags |= AT_TIMEOU; 1578 goto out; 1579 } 1580 if (wdc->cap & WDC_CAPABILITY_IRQACK) 1581 wdc->irqack(chp); 1582 if (ata_c->flags & AT_READ) { 1583 if ((chp->ch_status & WDCS_DRQ) == 0) { 1584 ata_c->flags |= AT_TIMEOU; 1585 goto out; 1586 } 1587 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_CAP32) { 1588 bus_space_read_multi_4(chp->data32iot, chp->data32ioh, 1589 0, (u_int32_t*)data, bcount >> 2); 1590 data += bcount & 0xfffffffc; 1591 bcount = bcount & 0x03; 1592 } 1593 if (bcount > 0) 1594 wdc->datain_pio(chp, DRIVE_NOSTREAM, data, bcount); 1595 /* at this point the drive should be in its initial state */ 1596 ata_c->flags |= AT_XFDONE; 1597 /* XXX should read status register here ? */ 1598 } else if (ata_c->flags & AT_WRITE) { 1599 if ((chp->ch_status & WDCS_DRQ) == 0) { 1600 ata_c->flags |= AT_TIMEOU; 1601 goto out; 1602 } 1603 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_CAP32) { 1604 bus_space_write_multi_4(chp->data32iot, chp->data32ioh, 1605 0, (u_int32_t*)data, bcount >> 2); 1606 data += bcount & 0xfffffffc; 1607 bcount = bcount & 0x03; 1608 } 1609 if (bcount > 0) 1610 wdc->dataout_pio(chp, DRIVE_NOSTREAM, data, bcount); 1611 ata_c->flags |= AT_XFDONE; 1612 if ((ata_c->flags & AT_POLL) == 0) { 1613 chp->ch_flags |= WDCF_IRQ_WAIT; /* wait for interrupt */ 1614 callout_reset(&chp->ch_callout, 1615 ata_c->timeout / 1000 * hz, wdctimeout, chp); 1616 return 1; 1617 } else { 1618 goto again; 1619 } 1620 } 1621 out: 1622 __wdccommand_done(chp, xfer); 1623 return 1; 1624 } 1625 1626 static void 1627 __wdccommand_done(struct wdc_channel *chp, struct ata_xfer *xfer) 1628 { 1629 struct wdc_softc *wdc = chp->ch_wdc; 1630 struct ata_command *ata_c = xfer->c_cmd; 1631 1632 WDCDEBUG_PRINT(("__wdccommand_done %s:%d:%d\n", 1633 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1634 DEBUG_FUNCS); 1635 1636 1637 if (chp->ch_status & WDCS_DWF) 1638 ata_c->flags |= AT_DF; 1639 if (chp->ch_status & WDCS_ERR) { 1640 ata_c->flags |= AT_ERROR; 1641 ata_c->r_error = chp->ch_error; 1642 } 1643 if ((ata_c->flags & AT_READREG) != 0 && 1644 (wdc->sc_dev.dv_flags & DVF_ACTIVE) != 0 && 1645 (ata_c->flags & (AT_ERROR | AT_DF)) == 0) { 1646 ata_c->r_head = bus_space_read_1(chp->cmd_iot, 1647 chp->cmd_iohs[wd_sdh], 0); 1648 ata_c->r_count = bus_space_read_1(chp->cmd_iot, 1649 chp->cmd_iohs[wd_seccnt], 0); 1650 ata_c->r_sector = bus_space_read_1(chp->cmd_iot, 1651 chp->cmd_iohs[wd_sector], 0); 1652 ata_c->r_cyl |= bus_space_read_1(chp->cmd_iot, 1653 chp->cmd_iohs[wd_cyl_lo], 0); 1654 ata_c->r_cyl = bus_space_read_1(chp->cmd_iot, 1655 chp->cmd_iohs[wd_cyl_hi], 0) << 8; 1656 ata_c->r_error = bus_space_read_1(chp->cmd_iot, 1657 chp->cmd_iohs[wd_error], 0); 1658 ata_c->r_features = bus_space_read_1(chp->cmd_iot, 1659 chp->cmd_iohs[wd_features], 0); 1660 } 1661 callout_stop(&chp->ch_callout); 1662 chp->ch_queue->active_xfer = NULL; 1663 if (ata_c->flags & AT_POLL) { 1664 /* enable interrupts */ 1665 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1666 WDCTL_4BIT); 1667 delay(10); /* some drives need a little delay here */ 1668 } 1669 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_WAITDRAIN) { 1670 __wdccommand_kill_xfer(chp, xfer, KILL_GONE); 1671 chp->ch_drive[xfer->c_drive].drive_flags &= ~DRIVE_WAITDRAIN; 1672 wakeup(&chp->ch_queue->active_xfer); 1673 } else 1674 __wdccommand_done_end(chp, xfer); 1675 } 1676 1677 static void 1678 __wdccommand_done_end(struct wdc_channel *chp, struct ata_xfer *xfer) 1679 { 1680 struct ata_command *ata_c = xfer->c_cmd; 1681 1682 ata_c->flags |= AT_DONE; 1683 wdc_free_xfer(chp, xfer); 1684 if (ata_c->flags & AT_WAIT) 1685 wakeup(ata_c); 1686 else if (ata_c->callback) 1687 ata_c->callback(ata_c->callback_arg); 1688 wdcstart(chp); 1689 return; 1690 } 1691 1692 static void 1693 __wdccommand_kill_xfer(struct wdc_channel *chp, struct ata_xfer *xfer, 1694 int reason) 1695 { 1696 struct ata_command *ata_c = xfer->c_cmd; 1697 1698 switch (reason) { 1699 case KILL_GONE: 1700 ata_c->flags |= AT_GONE; 1701 break; 1702 case KILL_RESET: 1703 ata_c->flags |= AT_RESET; 1704 break; 1705 default: 1706 printf("__wdccommand_kill_xfer: unknown reason %d\n", 1707 reason); 1708 panic("__wdccommand_kill_xfer"); 1709 } 1710 __wdccommand_done_end(chp, xfer); 1711 } 1712 1713 /* 1714 * Send a command. The drive should be ready. 1715 * Assumes interrupts are blocked. 1716 */ 1717 void 1718 wdccommand(struct wdc_channel *chp, u_int8_t drive, u_int8_t command, 1719 u_int16_t cylin, u_int8_t head, u_int8_t sector, u_int8_t count, 1720 u_int8_t features) 1721 { 1722 struct wdc_softc *wdc = chp->ch_wdc; 1723 1724 WDCDEBUG_PRINT(("wdccommand %s:%d:%d: command=0x%x cylin=%d head=%d " 1725 "sector=%d count=%d features=%d\n", wdc->sc_dev.dv_xname, 1726 chp->ch_channel, drive, command, cylin, head, sector, count, 1727 features), DEBUG_FUNCS); 1728 1729 if (wdc->cap & WDC_CAPABILITY_SELECT) 1730 wdc->select(chp,drive); 1731 1732 /* Select drive, head, and addressing mode. */ 1733 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1734 WDSD_IBM | (drive << 4) | head); 1735 /* Load parameters into the wd_features register. */ 1736 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 1737 features); 1738 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 0, count); 1739 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sector], 0, sector); 1740 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_lo], 0, cylin); 1741 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_hi], 1742 0, cylin >> 8); 1743 1744 /* Send command. */ 1745 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1746 return; 1747 } 1748 1749 /* 1750 * Send a 48-bit addressing command. The drive should be ready. 1751 * Assumes interrupts are blocked. 1752 */ 1753 void 1754 wdccommandext(struct wdc_channel *chp, u_int8_t drive, u_int8_t command, 1755 u_int64_t blkno, u_int16_t count) 1756 { 1757 struct wdc_softc *wdc = chp->ch_wdc; 1758 1759 WDCDEBUG_PRINT(("wdccommandext %s:%d:%d: command=0x%x blkno=%d " 1760 "count=%d\n", wdc->sc_dev.dv_xname, 1761 chp->ch_channel, drive, command, (u_int32_t) blkno, count), 1762 DEBUG_FUNCS); 1763 1764 if (wdc->cap & WDC_CAPABILITY_SELECT) 1765 wdc->select(chp,drive); 1766 1767 /* Select drive, head, and addressing mode. */ 1768 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1769 (drive << 4) | WDSD_LBA); 1770 1771 /* previous */ 1772 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 0); 1773 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 1774 0, count >> 8); 1775 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_lo], 1776 0, blkno >> 24); 1777 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_mi], 1778 0, blkno >> 32); 1779 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_hi], 1780 0, blkno >> 40); 1781 1782 /* current */ 1783 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 0); 1784 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 0, count); 1785 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_lo], 0, blkno); 1786 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_mi], 1787 0, blkno >> 8); 1788 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_hi], 1789 0, blkno >> 16); 1790 1791 /* Send command. */ 1792 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1793 return; 1794 } 1795 1796 /* 1797 * Simplified version of wdccommand(). Unbusy/ready/drq must be 1798 * tested by the caller. 1799 */ 1800 void 1801 wdccommandshort(struct wdc_channel *chp, int drive, int command) 1802 { 1803 struct wdc_softc *wdc = chp->ch_wdc; 1804 1805 WDCDEBUG_PRINT(("wdccommandshort %s:%d:%d command 0x%x\n", 1806 wdc->sc_dev.dv_xname, chp->ch_channel, drive, command), 1807 DEBUG_FUNCS); 1808 1809 if (wdc->cap & WDC_CAPABILITY_SELECT) 1810 wdc->select(chp,drive); 1811 1812 /* Select drive. */ 1813 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1814 WDSD_IBM | (drive << 4)); 1815 1816 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1817 } 1818 1819 /* Add a command to the queue and start controller. Must be called at splbio */ 1820 void 1821 wdc_exec_xfer(struct wdc_channel *chp, struct ata_xfer *xfer) 1822 { 1823 1824 WDCDEBUG_PRINT(("wdc_exec_xfer %p channel %d drive %d\n", xfer, 1825 chp->ch_channel, xfer->c_drive), DEBUG_XFERS); 1826 1827 /* complete xfer setup */ 1828 xfer->c_chp = chp; 1829 1830 /* insert at the end of command list */ 1831 TAILQ_INSERT_TAIL(&chp->ch_queue->queue_xfer, xfer, c_xferchain); 1832 WDCDEBUG_PRINT(("wdcstart from wdc_exec_xfer, flags 0x%x\n", 1833 chp->ch_flags), DEBUG_XFERS); 1834 wdcstart(chp); 1835 } 1836 1837 struct ata_xfer * 1838 wdc_get_xfer(int flags) 1839 { 1840 struct ata_xfer *xfer; 1841 int s; 1842 1843 s = splbio(); 1844 xfer = pool_get(&wdc_xfer_pool, 1845 ((flags & WDC_NOSLEEP) != 0 ? PR_NOWAIT : PR_WAITOK)); 1846 splx(s); 1847 if (xfer != NULL) { 1848 memset(xfer, 0, sizeof(struct ata_xfer)); 1849 } 1850 return xfer; 1851 } 1852 1853 void 1854 wdc_free_xfer(struct wdc_channel *chp, struct ata_xfer *xfer) 1855 { 1856 struct wdc_softc *wdc = chp->ch_wdc; 1857 int s; 1858 1859 if (wdc->cap & WDC_CAPABILITY_HWLOCK) 1860 (*wdc->free_hw)(chp); 1861 s = splbio(); 1862 pool_put(&wdc_xfer_pool, xfer); 1863 splx(s); 1864 } 1865 1866 /* 1867 * Kill off all pending xfers for a wdc_channel. 1868 * 1869 * Must be called at splbio(). 1870 */ 1871 void 1872 wdc_kill_pending(struct ata_drive_datas *drvp) 1873 { 1874 struct wdc_channel *chp = drvp->chnl_softc; 1875 struct ata_xfer *xfer, *next_xfer; 1876 int s = splbio(); 1877 1878 for (xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); 1879 xfer != NULL; xfer = next_xfer) { 1880 next_xfer = TAILQ_NEXT(xfer, c_xferchain); 1881 if (xfer->c_chp != chp || xfer->c_drive != drvp->drive) 1882 continue; 1883 TAILQ_REMOVE(&chp->ch_queue->queue_xfer, xfer, c_xferchain); 1884 (*xfer->c_kill_xfer)(chp, xfer, KILL_GONE); 1885 } 1886 1887 while ((xfer = chp->ch_queue->active_xfer) != NULL) { 1888 if (xfer->c_chp == chp && xfer->c_drive == drvp->drive) { 1889 drvp->drive_flags |= DRIVE_WAITDRAIN; 1890 (void) tsleep(&chp->ch_queue->active_xfer, 1891 PRIBIO, "atdrn", 0); 1892 } else { 1893 /* no more xfer for us */ 1894 break; 1895 } 1896 } 1897 splx(s); 1898 } 1899 1900 static void 1901 __wdcerror(struct wdc_channel *chp, char *msg) 1902 { 1903 struct wdc_softc *wdc = chp->ch_wdc; 1904 struct ata_xfer *xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); 1905 1906 if (xfer == NULL) 1907 printf("%s:%d: %s\n", wdc->sc_dev.dv_xname, chp->ch_channel, 1908 msg); 1909 else 1910 printf("%s:%d:%d: %s\n", wdc->sc_dev.dv_xname, 1911 chp->ch_channel, xfer->c_drive, msg); 1912 } 1913 1914 /* 1915 * the bit bucket 1916 */ 1917 void 1918 wdcbit_bucket(struct wdc_channel *chp, int size) 1919 { 1920 1921 for (; size >= 2; size -= 2) 1922 (void)bus_space_read_2(chp->cmd_iot, chp->cmd_iohs[wd_data], 0); 1923 if (size) 1924 (void)bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_data], 0); 1925 } 1926 1927 int 1928 wdc_addref(struct wdc_channel *chp) 1929 { 1930 struct wdc_softc *wdc = chp->ch_wdc; 1931 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 1932 int s, error = 0; 1933 1934 s = splbio(); 1935 if (adapt->adapt_refcnt++ == 0 && 1936 adapt->adapt_enable != NULL) { 1937 error = (*adapt->adapt_enable)(&wdc->sc_dev, 1); 1938 if (error) 1939 adapt->adapt_refcnt--; 1940 } 1941 splx(s); 1942 return (error); 1943 } 1944 1945 void 1946 wdc_delref(struct wdc_channel *chp) 1947 { 1948 struct wdc_softc *wdc = chp->ch_wdc; 1949 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 1950 int s; 1951 1952 s = splbio(); 1953 if (adapt->adapt_refcnt-- == 1 && 1954 adapt->adapt_enable != NULL) 1955 (void) (*adapt->adapt_enable)(&wdc->sc_dev, 0); 1956 splx(s); 1957 } 1958 1959 void 1960 wdc_datain_pio(chp, flags, buf, len) 1961 struct wdc_channel *chp; 1962 int flags; 1963 void *buf; 1964 size_t len; 1965 { 1966 1967 if (flags & DRIVE_NOSTREAM) { 1968 if (flags & DRIVE_CAP32) { 1969 bus_space_read_multi_4(chp->data32iot, 1970 chp->data32ioh, 0, buf, len >> 2); 1971 buf = (char *)buf + (len & ~3); 1972 len &= 3; 1973 } 1974 if (len) { 1975 bus_space_read_multi_2(chp->cmd_iot, 1976 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1977 } 1978 } else { 1979 if (flags & DRIVE_CAP32) { 1980 bus_space_read_multi_stream_4(chp->data32iot, 1981 chp->data32ioh, 0, buf, len >> 2); 1982 buf = (char *)buf + (len & ~3); 1983 len &= 3; 1984 } 1985 if (len) { 1986 bus_space_read_multi_stream_2(chp->cmd_iot, 1987 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1988 } 1989 } 1990 } 1991 1992 void 1993 wdc_dataout_pio(chp, flags, buf, len) 1994 struct wdc_channel *chp; 1995 int flags; 1996 void *buf; 1997 size_t len; 1998 { 1999 2000 if (flags & DRIVE_NOSTREAM) { 2001 if (flags & DRIVE_CAP32) { 2002 bus_space_write_multi_4(chp->data32iot, 2003 chp->data32ioh, 0, buf, len >> 2); 2004 buf = (char *)buf + (len & ~3); 2005 len &= 3; 2006 } 2007 if (len) { 2008 bus_space_write_multi_2(chp->cmd_iot, 2009 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 2010 } 2011 } else { 2012 if (flags & DRIVE_CAP32) { 2013 bus_space_write_multi_stream_4(chp->data32iot, 2014 chp->data32ioh, 0, buf, len >> 2); 2015 buf = (char *)buf + (len & ~3); 2016 len &= 3; 2017 } 2018 if (len) { 2019 bus_space_write_multi_stream_2(chp->cmd_iot, 2020 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 2021 } 2022 } 2023 } 2024
Indexes created Tue Sep 23 23:09:58 GMT 2025