wdc.c revision 1.204
1 /* $NetBSD: wdc.c,v 1.204 2004/08/13 04:10:49 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 1.204 2004/08/13 04:10:49 thorpej Exp $"); 74 75 #ifndef ATADEBUG 76 #define ATADEBUG 77 #endif /* ATADEBUG */ 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/syslog.h> 87 #include <sys/proc.h> 88 89 #include <machine/intr.h> 90 #include <machine/bus.h> 91 92 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 93 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 94 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 95 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 96 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 97 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 98 99 #include <dev/ata/atavar.h> 100 #include <dev/ata/atareg.h> 101 #include <dev/ic/wdcreg.h> 102 #include <dev/ic/wdcvar.h> 103 104 #include "locators.h" 105 106 #include "ataraid.h" 107 #include "atapibus.h" 108 #include "wd.h" 109 110 #if NATARAID > 0 111 #include <dev/ata/ata_raidvar.h> 112 #endif 113 114 #define WDCDELAY 100 /* 100 microseconds */ 115 #define WDCNDELAY_RST (WDC_RESET_WAIT * 1000 / WDCDELAY) 116 #if 0 117 /* If you enable this, it will report any delays more than WDCDELAY * N long. */ 118 #define WDCNDELAY_DEBUG 50 119 #endif 120 121 /* When polling wait that much and then tsleep for 1/hz seconds */ 122 #define WDCDELAY_POLL 1 /* ms */ 123 124 /* timeout for the control commands */ 125 #define WDC_CTRL_DELAY 10000 /* 10s, for the recall command */ 126 127 #if NWD > 0 128 extern const struct ata_bustype wdc_ata_bustype; /* in ata_wdc.c */ 129 #else 130 /* A fake one, the autoconfig will print "wd at foo ... not configured */ 131 const struct ata_bustype wdc_ata_bustype = { 132 SCSIPI_BUSTYPE_ATA, 133 NULL, 134 NULL, 135 NULL, 136 NULL, 137 NULL, 138 NULL, 139 NULL 140 }; 141 #endif 142 143 static int wdcprobe1(struct wdc_channel*, int); 144 static void __wdcerror(struct wdc_channel*, char *); 145 static int __wdcwait_reset(struct wdc_channel *, int, int); 146 static void __wdccommand_done(struct wdc_channel *, struct ata_xfer *); 147 static void __wdccommand_done_end(struct wdc_channel *, struct ata_xfer *); 148 static void __wdccommand_kill_xfer(struct wdc_channel *, 149 struct ata_xfer *, int); 150 static void __wdccommand_start(struct wdc_channel *, struct ata_xfer *); 151 static int __wdccommand_intr(struct wdc_channel *, struct ata_xfer *, int); 152 static int __wdcwait(struct wdc_channel *, int, int, int); 153 154 #define DEBUG_INTR 0x01 155 #define DEBUG_XFERS 0x02 156 #define DEBUG_STATUS 0x04 157 #define DEBUG_FUNCS 0x08 158 #define DEBUG_PROBE 0x10 159 #define DEBUG_DETACH 0x20 160 #define DEBUG_DELAY 0x40 161 #ifdef ATADEBUG 162 extern int atadebug_mask; /* init'ed in ata.c */ 163 int wdc_nxfer = 0; 164 #define ATADEBUG_PRINT(args, level) if (atadebug_mask & (level)) printf args 165 #else 166 #define ATADEBUG_PRINT(args, level) 167 #endif 168 169 /* 170 * A queue of atabus instances, used to ensure the same bus probe order 171 * for a given hardware configuration at each boot. 172 */ 173 struct atabus_initq_head atabus_initq_head = 174 TAILQ_HEAD_INITIALIZER(atabus_initq_head); 175 struct simplelock atabus_interlock = SIMPLELOCK_INITIALIZER; 176 177 /* 178 * Initialize the "shadow register" handles for a standard wdc controller. 179 */ 180 void 181 wdc_init_shadow_regs(struct wdc_channel *chp) 182 { 183 184 chp->cmd_iohs[wd_status] = chp->cmd_iohs[wd_command]; 185 chp->cmd_iohs[wd_features] = chp->cmd_iohs[wd_error]; 186 } 187 188 /* Test to see controller with at last one attached drive is there. 189 * Returns a bit for each possible drive found (0x01 for drive 0, 190 * 0x02 for drive 1). 191 * Logic: 192 * - If a status register is at 0xff, assume there is no drive here 193 * (ISA has pull-up resistors). Similarly if the status register has 194 * the value we last wrote to the bus (for IDE interfaces without pullups). 195 * If no drive at all -> return. 196 * - reset the controller, wait for it to complete (may take up to 31s !). 197 * If timeout -> return. 198 * - test ATA/ATAPI signatures. If at last one drive found -> return. 199 * - try an ATA command on the master. 200 */ 201 202 static void 203 wdc_drvprobe(struct wdc_channel *chp) 204 { 205 struct ataparams params; 206 struct wdc_softc *wdc = chp->ch_wdc; 207 u_int8_t st0 = 0, st1 = 0; 208 int i, error; 209 210 if (wdcprobe1(chp, 0) == 0) { 211 /* No drives, abort the attach here. */ 212 return; 213 } 214 215 /* for ATA/OLD drives, wait for DRDY, 3s timeout */ 216 for (i = 0; i < mstohz(3000); i++) { 217 if (chp->ch_drive[0].drive_flags & (DRIVE_ATA|DRIVE_OLD)) { 218 if (wdc != NULL && wdc->select) 219 wdc->select(chp,0); 220 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 221 0, WDSD_IBM); 222 delay(10); /* 400ns delay */ 223 st0 = bus_space_read_1(chp->cmd_iot, 224 chp->cmd_iohs[wd_status], 0); 225 } 226 227 if (chp->ch_drive[1].drive_flags & (DRIVE_ATA|DRIVE_OLD)) { 228 if (wdc != NULL && wdc->select) 229 wdc->select(chp,1); 230 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 231 0, WDSD_IBM | 0x10); 232 delay(10); /* 400ns delay */ 233 st1 = bus_space_read_1(chp->cmd_iot, 234 chp->cmd_iohs[wd_status], 0); 235 } 236 237 if (((chp->ch_drive[0].drive_flags & (DRIVE_ATA|DRIVE_OLD)) 238 == 0 || 239 (st0 & WDCS_DRDY)) && 240 ((chp->ch_drive[1].drive_flags & (DRIVE_ATA|DRIVE_OLD)) 241 == 0 || 242 (st1 & WDCS_DRDY))) 243 break; 244 tsleep(¶ms, PRIBIO, "atadrdy", 1); 245 } 246 if ((st0 & WDCS_DRDY) == 0) 247 chp->ch_drive[0].drive_flags &= ~(DRIVE_ATA|DRIVE_OLD); 248 if ((st1 & WDCS_DRDY) == 0) 249 chp->ch_drive[1].drive_flags &= ~(DRIVE_ATA|DRIVE_OLD); 250 251 ATADEBUG_PRINT(("%s:%d: wait DRDY st0 0x%x st1 0x%x\n", 252 wdc->sc_dev.dv_xname, 253 chp->ch_channel, st0, st1), DEBUG_PROBE); 254 255 /* Wait a bit, some devices are weird just after a reset. */ 256 delay(5000); 257 258 for (i = 0; i < 2; i++) { 259 /* XXX This should be done by other code. */ 260 chp->ch_drive[i].chnl_softc = chp; 261 chp->ch_drive[i].drive = i; 262 263 /* 264 * Init error counter so that an error withing the first xfers 265 * will trigger a downgrade 266 */ 267 chp->ch_drive[i].n_dmaerrs = NERRS_MAX-1; 268 269 /* If controller can't do 16bit flag the drives as 32bit */ 270 if ((wdc->cap & 271 (WDC_CAPABILITY_DATA16 | WDC_CAPABILITY_DATA32)) == 272 WDC_CAPABILITY_DATA32) 273 chp->ch_drive[i].drive_flags |= DRIVE_CAP32; 274 if ((chp->ch_drive[i].drive_flags & DRIVE) == 0) 275 continue; 276 277 /* Shortcut in case we've been shutdown */ 278 if (chp->ch_flags & WDCF_SHUTDOWN) 279 return; 280 281 /* issue an identify, to try to detect ghosts */ 282 error = ata_get_params(&chp->ch_drive[i], 283 AT_WAIT | AT_POLL, ¶ms); 284 if (error != CMD_OK) { 285 tsleep(¶ms, PRIBIO, "atacnf", mstohz(1000)); 286 287 /* Shortcut in case we've been shutdown */ 288 if (chp->ch_flags & WDCF_SHUTDOWN) 289 return; 290 291 error = ata_get_params(&chp->ch_drive[i], 292 AT_WAIT | AT_POLL, ¶ms); 293 } 294 if (error == CMD_OK) { 295 /* If IDENTIFY succeeded, this is not an OLD ctrl */ 296 chp->ch_drive[0].drive_flags &= ~DRIVE_OLD; 297 chp->ch_drive[1].drive_flags &= ~DRIVE_OLD; 298 } else { 299 chp->ch_drive[i].drive_flags &= 300 ~(DRIVE_ATA | DRIVE_ATAPI); 301 ATADEBUG_PRINT(("%s:%d:%d: IDENTIFY failed (%d)\n", 302 wdc->sc_dev.dv_xname, 303 chp->ch_channel, i, error), DEBUG_PROBE); 304 if ((chp->ch_drive[i].drive_flags & DRIVE_OLD) == 0) 305 continue; 306 /* 307 * Pre-ATA drive ? 308 * Test registers writability (Error register not 309 * writable, but cyllo is), then try an ATA command. 310 */ 311 if (wdc->select) 312 wdc->select(chp,i); 313 bus_space_write_1(chp->cmd_iot, 314 chp->cmd_iohs[wd_sdh], 0, WDSD_IBM | (i << 4)); 315 delay(10); /* 400ns delay */ 316 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 317 0, 0x58); 318 bus_space_write_1(chp->cmd_iot, 319 chp->cmd_iohs[wd_cyl_lo], 0, 0xa5); 320 if (bus_space_read_1(chp->cmd_iot, 321 chp->cmd_iohs[wd_error], 0) == 0x58 || 322 bus_space_read_1(chp->cmd_iot, 323 chp->cmd_iohs[wd_cyl_lo], 0) != 0xa5) { 324 ATADEBUG_PRINT(("%s:%d:%d: register " 325 "writability failed\n", 326 wdc->sc_dev.dv_xname, 327 chp->ch_channel, i), DEBUG_PROBE); 328 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 329 continue; 330 } 331 if (wdc_wait_for_ready(chp, 10000, 0) == WDCWAIT_TOUT) { 332 ATADEBUG_PRINT(("%s:%d:%d: not ready\n", 333 wdc->sc_dev.dv_xname, 334 chp->ch_channel, i), DEBUG_PROBE); 335 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 336 continue; 337 } 338 bus_space_write_1(chp->cmd_iot, 339 chp->cmd_iohs[wd_command], 0, WDCC_RECAL); 340 delay(10); /* 400ns delay */ 341 if (wdc_wait_for_ready(chp, 10000, 0) == WDCWAIT_TOUT) { 342 ATADEBUG_PRINT(("%s:%d:%d: WDCC_RECAL failed\n", 343 wdc->sc_dev.dv_xname, 344 chp->ch_channel, i), DEBUG_PROBE); 345 chp->ch_drive[i].drive_flags &= ~DRIVE_OLD; 346 } else { 347 chp->ch_drive[0].drive_flags &= 348 ~(DRIVE_ATA | DRIVE_ATAPI); 349 chp->ch_drive[1].drive_flags &= 350 ~(DRIVE_ATA | DRIVE_ATAPI); 351 } 352 } 353 } 354 } 355 356 void 357 atabusconfig(struct atabus_softc *atabus_sc) 358 { 359 struct wdc_channel *chp = atabus_sc->sc_chan; 360 struct wdc_softc *wdc = chp->ch_wdc; 361 int i; 362 struct atabus_initq *atabus_initq = NULL; 363 364 /* Probe for the drives. */ 365 (*wdc->drv_probe)(chp); 366 367 ATADEBUG_PRINT(("atabusattach: ch_drive_flags 0x%x 0x%x\n", 368 chp->ch_drive[0].drive_flags, chp->ch_drive[1].drive_flags), 369 DEBUG_PROBE); 370 371 /* If no drives, abort here */ 372 if ((chp->ch_drive[0].drive_flags & DRIVE) == 0 && 373 (chp->ch_drive[1].drive_flags & DRIVE) == 0) 374 goto out; 375 376 /* Shortcut in case we've been shutdown */ 377 if (chp->ch_flags & WDCF_SHUTDOWN) 378 goto out; 379 380 /* Make sure the devices probe in atabus order to avoid jitter. */ 381 simple_lock(&atabus_interlock); 382 while(1) { 383 atabus_initq = TAILQ_FIRST(&atabus_initq_head); 384 if (atabus_initq->atabus_sc == atabus_sc) 385 break; 386 ltsleep(&atabus_initq_head, PRIBIO, "ata_initq", 0, 387 &atabus_interlock); 388 } 389 simple_unlock(&atabus_interlock); 390 391 /* 392 * Attach an ATAPI bus, if needed. 393 */ 394 if ((chp->ch_drive[0].drive_flags & DRIVE_ATAPI) || 395 (chp->ch_drive[1].drive_flags & DRIVE_ATAPI)) { 396 #if NATAPIBUS > 0 397 wdc_atapibus_attach(atabus_sc); 398 #else 399 /* 400 * Fake the autoconfig "not configured" message 401 */ 402 aprint_normal("atapibus at %s not configured\n", 403 wdc->sc_dev.dv_xname); 404 chp->atapibus = NULL; 405 chp->ch_drive[0].drive_flags &= ~DRIVE_ATAPI; 406 chp->ch_drive[1].drive_flags &= ~DRIVE_ATAPI; 407 #endif 408 } 409 410 for (i = 0; i < 2; i++) { 411 struct ata_device adev; 412 if ((chp->ch_drive[i].drive_flags & 413 (DRIVE_ATA | DRIVE_OLD)) == 0) { 414 continue; 415 } 416 memset(&adev, 0, sizeof(struct ata_device)); 417 adev.adev_bustype = &wdc_ata_bustype; 418 adev.adev_channel = chp->ch_channel; 419 adev.adev_openings = 1; 420 adev.adev_drv_data = &chp->ch_drive[i]; 421 chp->ata_drives[i] = config_found(&atabus_sc->sc_dev, 422 &adev, ataprint); 423 if (chp->ata_drives[i] != NULL) 424 ata_probe_caps(&chp->ch_drive[i]); 425 else 426 chp->ch_drive[i].drive_flags &= 427 ~(DRIVE_ATA | DRIVE_OLD); 428 } 429 430 /* now that we know the drives, the controller can set its modes */ 431 if (wdc->set_modes) { 432 wdc->set_modes(chp); 433 ata_print_modes(chp); 434 } 435 #if NATARAID > 0 436 if (wdc->cap & WDC_CAPABILITY_RAID) 437 for (i = 0; i < 2; i++) 438 if (chp->ata_drives[i] != NULL) 439 ata_raid_check_component(chp->ata_drives[i]); 440 #endif /* NATARAID > 0 */ 441 442 /* 443 * reset drive_flags for unattached devices, reset state for attached 444 * ones 445 */ 446 for (i = 0; i < 2; i++) { 447 if (chp->ch_drive[i].drv_softc == NULL) 448 chp->ch_drive[i].drive_flags = 0; 449 else 450 chp->ch_drive[i].state = 0; 451 } 452 453 out: 454 if (atabus_initq == NULL) { 455 simple_lock(&atabus_interlock); 456 while(1) { 457 atabus_initq = TAILQ_FIRST(&atabus_initq_head); 458 if (atabus_initq->atabus_sc == atabus_sc) 459 break; 460 ltsleep(&atabus_initq_head, PRIBIO, "ata_initq", 0, 461 &atabus_interlock); 462 } 463 simple_unlock(&atabus_interlock); 464 } 465 simple_lock(&atabus_interlock); 466 TAILQ_REMOVE(&atabus_initq_head, atabus_initq, atabus_initq); 467 simple_unlock(&atabus_interlock); 468 469 free(atabus_initq, M_DEVBUF); 470 wakeup(&atabus_initq_head); 471 472 ata_delref(chp); 473 474 config_pending_decr(); 475 } 476 477 int 478 wdcprobe(struct wdc_channel *chp) 479 { 480 481 return (wdcprobe1(chp, 1)); 482 } 483 484 static int 485 wdcprobe1(struct wdc_channel *chp, int poll) 486 { 487 struct wdc_softc *wdc = chp->ch_wdc; 488 u_int8_t st0, st1, sc, sn, cl, ch; 489 u_int8_t ret_value = 0x03; 490 u_int8_t drive; 491 int s; 492 493 /* 494 * Sanity check to see if the wdc channel responds at all. 495 */ 496 497 s = splbio(); 498 if (wdc == NULL || 499 (wdc->cap & WDC_CAPABILITY_NO_EXTRA_RESETS) == 0) { 500 501 if (wdc != NULL && wdc->select) 502 wdc->select(chp,0); 503 504 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 505 WDSD_IBM); 506 delay(10); /* 400ns delay */ 507 st0 = bus_space_read_1(chp->cmd_iot, 508 chp->cmd_iohs[wd_status], 0); 509 510 if (wdc != NULL && wdc->select) 511 wdc->select(chp,1); 512 513 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 514 WDSD_IBM | 0x10); 515 delay(10); /* 400ns delay */ 516 st1 = bus_space_read_1(chp->cmd_iot, 517 chp->cmd_iohs[wd_status], 0); 518 519 ATADEBUG_PRINT(("%s:%d: before reset, st0=0x%x, st1=0x%x\n", 520 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 521 chp->ch_channel, st0, st1), DEBUG_PROBE); 522 523 if (st0 == 0xff || st0 == WDSD_IBM) 524 ret_value &= ~0x01; 525 if (st1 == 0xff || st1 == (WDSD_IBM | 0x10)) 526 ret_value &= ~0x02; 527 /* Register writability test, drive 0. */ 528 if (ret_value & 0x01) { 529 if (wdc != NULL && wdc->select) 530 wdc->select(chp,0); 531 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 532 0, WDSD_IBM); 533 bus_space_write_1(chp->cmd_iot, 534 chp->cmd_iohs[wd_cyl_lo], 0, 0x02); 535 cl = bus_space_read_1(chp->cmd_iot, 536 chp->cmd_iohs[wd_cyl_lo], 0); 537 if (cl != 0x02) { 538 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 539 "got 0x%x != 0x02\n", 540 wdc != NULL ? 541 wdc->sc_dev.dv_xname : "wdcprobe", 542 chp->ch_channel, cl), 543 DEBUG_PROBE); 544 ret_value &= ~0x01; 545 } 546 bus_space_write_1(chp->cmd_iot, 547 chp->cmd_iohs[wd_cyl_lo], 0, 0x01); 548 cl = bus_space_read_1(chp->cmd_iot, 549 chp->cmd_iohs[wd_cyl_lo], 0); 550 if (cl != 0x01) { 551 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 552 "got 0x%x != 0x01\n", 553 wdc != NULL ? 554 wdc->sc_dev.dv_xname : "wdcprobe", 555 chp->ch_channel, cl), 556 DEBUG_PROBE); 557 ret_value &= ~0x01; 558 } 559 bus_space_write_1(chp->cmd_iot, 560 chp->cmd_iohs[wd_sector], 0, 0x01); 561 cl = bus_space_read_1(chp->cmd_iot, 562 chp->cmd_iohs[wd_sector], 0); 563 if (cl != 0x01) { 564 ATADEBUG_PRINT(("%s:%d drive 0 wd_sector: " 565 "got 0x%x != 0x01\n", 566 wdc != NULL ? 567 wdc->sc_dev.dv_xname : "wdcprobe", 568 chp->ch_channel, cl), 569 DEBUG_PROBE); 570 ret_value &= ~0x01; 571 } 572 bus_space_write_1(chp->cmd_iot, 573 chp->cmd_iohs[wd_sector], 0, 0x02); 574 cl = bus_space_read_1(chp->cmd_iot, 575 chp->cmd_iohs[wd_sector], 0); 576 if (cl != 0x02) { 577 ATADEBUG_PRINT(("%s:%d drive 0 wd_sector: " 578 "got 0x%x != 0x02\n", 579 wdc != NULL ? 580 wdc->sc_dev.dv_xname : "wdcprobe", 581 chp->ch_channel, cl), 582 DEBUG_PROBE); 583 ret_value &= ~0x01; 584 } 585 cl = bus_space_read_1(chp->cmd_iot, 586 chp->cmd_iohs[wd_cyl_lo], 0); 587 if (cl != 0x01) { 588 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo(2): " 589 "got 0x%x != 0x01\n", 590 wdc != NULL ? 591 wdc->sc_dev.dv_xname : "wdcprobe", 592 chp->ch_channel, cl), 593 DEBUG_PROBE); 594 ret_value &= ~0x01; 595 } 596 } 597 /* Register writability test, drive 1. */ 598 if (ret_value & 0x02) { 599 if (wdc != NULL && wdc->select) 600 wdc->select(chp,1); 601 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 602 0, WDSD_IBM | 0x10); 603 bus_space_write_1(chp->cmd_iot, 604 chp->cmd_iohs[wd_cyl_lo], 0, 0x02); 605 cl = bus_space_read_1(chp->cmd_iot, 606 chp->cmd_iohs[wd_cyl_lo], 0); 607 if (cl != 0x02) { 608 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 609 "got 0x%x != 0x02\n", 610 wdc != NULL ? 611 wdc->sc_dev.dv_xname : "wdcprobe", 612 chp->ch_channel, cl), 613 DEBUG_PROBE); 614 ret_value &= ~0x02; 615 } 616 bus_space_write_1(chp->cmd_iot, 617 chp->cmd_iohs[wd_cyl_lo], 0, 0x01); 618 cl = bus_space_read_1(chp->cmd_iot, 619 chp->cmd_iohs[wd_cyl_lo], 0); 620 if (cl != 0x01) { 621 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 622 "got 0x%x != 0x01\n", 623 wdc != NULL ? 624 wdc->sc_dev.dv_xname : "wdcprobe", 625 chp->ch_channel, cl), 626 DEBUG_PROBE); 627 ret_value &= ~0x02; 628 } 629 bus_space_write_1(chp->cmd_iot, 630 chp->cmd_iohs[wd_sector], 0, 0x01); 631 cl = bus_space_read_1(chp->cmd_iot, 632 chp->cmd_iohs[wd_sector], 0); 633 if (cl != 0x01) { 634 ATADEBUG_PRINT(("%s:%d drive 1 wd_sector: " 635 "got 0x%x != 0x01\n", 636 wdc != NULL ? 637 wdc->sc_dev.dv_xname : "wdcprobe", 638 chp->ch_channel, cl), 639 DEBUG_PROBE); 640 ret_value &= ~0x02; 641 } 642 bus_space_write_1(chp->cmd_iot, 643 chp->cmd_iohs[wd_sector], 0, 0x02); 644 cl = bus_space_read_1(chp->cmd_iot, 645 chp->cmd_iohs[wd_sector], 0); 646 if (cl != 0x02) { 647 ATADEBUG_PRINT(("%s:%d drive 1 wd_sector: " 648 "got 0x%x != 0x02\n", 649 wdc != NULL ? 650 wdc->sc_dev.dv_xname : "wdcprobe", 651 chp->ch_channel, cl), 652 DEBUG_PROBE); 653 ret_value &= ~0x02; 654 } 655 cl = bus_space_read_1(chp->cmd_iot, 656 chp->cmd_iohs[wd_cyl_lo], 0); 657 if (cl != 0x01) { 658 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo(2): " 659 "got 0x%x != 0x01\n", 660 wdc != NULL ? 661 wdc->sc_dev.dv_xname : "wdcprobe", 662 chp->ch_channel, cl), 663 DEBUG_PROBE); 664 ret_value &= ~0x02; 665 } 666 } 667 668 if (ret_value == 0) { 669 splx(s); 670 return 0; 671 } 672 } 673 674 675 #if 0 /* XXX this break some ATA or ATAPI devices */ 676 /* 677 * reset bus. Also send an ATAPI_RESET to devices, in case there are 678 * ATAPI device out there which don't react to the bus reset 679 */ 680 if (ret_value & 0x01) { 681 if (wdc != NULL && wdc->select) 682 wdc->select(chp,0); 683 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 684 0, WDSD_IBM); 685 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, 686 ATAPI_SOFT_RESET); 687 } 688 if (ret_value & 0x02) { 689 if (wdc != NULL && wdc->select) 690 wdc->select(chp,0); 691 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 692 0, WDSD_IBM | 0x10); 693 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, 694 ATAPI_SOFT_RESET); 695 } 696 697 delay(5000); 698 #endif 699 700 if (wdc != NULL && wdc->select) 701 wdc->select(chp,0); 702 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, WDSD_IBM); 703 delay(10); /* 400ns delay */ 704 /* assert SRST, wait for reset to complete */ 705 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 706 WDCTL_RST | WDCTL_IDS | WDCTL_4BIT); 707 DELAY(1000); 708 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 709 WDCTL_IDS | WDCTL_4BIT); 710 DELAY(2000); 711 (void) bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 0); 712 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 713 delay(10); /* 400ns delay */ 714 /* ACK interrupt in case there is one pending left (Promise ATA100) */ 715 if (wdc != NULL && wdc->irqack != NULL) 716 wdc->irqack(chp); 717 splx(s); 718 719 ret_value = __wdcwait_reset(chp, ret_value, poll); 720 ATADEBUG_PRINT(("%s:%d: after reset, ret_value=0x%d\n", 721 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", chp->ch_channel, 722 ret_value), DEBUG_PROBE); 723 724 /* if reset failed, there's nothing here */ 725 if (ret_value == 0) 726 return 0; 727 728 /* 729 * Test presence of drives. First test register signatures looking 730 * for ATAPI devices. If it's not an ATAPI and reset said there may 731 * be something here assume it's ATA or OLD. Ghost will be killed 732 * later in attach routine. 733 */ 734 for (drive = 0; drive < 2; drive++) { 735 if ((ret_value & (0x01 << drive)) == 0) 736 continue; 737 if (wdc != NULL && wdc->select) 738 wdc->select(chp,drive); 739 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 740 WDSD_IBM | (drive << 4)); 741 delay(10); /* 400ns delay */ 742 /* Save registers contents */ 743 sc = bus_space_read_1(chp->cmd_iot, 744 chp->cmd_iohs[wd_seccnt], 0); 745 sn = bus_space_read_1(chp->cmd_iot, 746 chp->cmd_iohs[wd_sector], 0); 747 cl = bus_space_read_1(chp->cmd_iot, 748 chp->cmd_iohs[wd_cyl_lo], 0); 749 ch = bus_space_read_1(chp->cmd_iot, 750 chp->cmd_iohs[wd_cyl_hi], 0); 751 752 ATADEBUG_PRINT(("%s:%d:%d: after reset, sc=0x%x sn=0x%x " 753 "cl=0x%x ch=0x%x\n", 754 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 755 chp->ch_channel, drive, sc, sn, cl, ch), DEBUG_PROBE); 756 /* 757 * sc & sn are supposted to be 0x1 for ATAPI but in some cases 758 * we get wrong values here, so ignore it. 759 */ 760 if (cl == 0x14 && ch == 0xeb) { 761 chp->ch_drive[drive].drive_flags |= DRIVE_ATAPI; 762 } else { 763 chp->ch_drive[drive].drive_flags |= DRIVE_ATA; 764 if (wdc == NULL || 765 (wdc->cap & WDC_CAPABILITY_PREATA) != 0) 766 chp->ch_drive[drive].drive_flags |= DRIVE_OLD; 767 } 768 } 769 return (ret_value); 770 } 771 772 void 773 wdcattach(struct wdc_channel *chp) 774 { 775 struct wdc_softc *wdc = chp->ch_wdc; 776 777 if (chp->ch_flags & WDCF_DISABLED) 778 return; 779 780 /* default data transfer methods */ 781 if (!wdc->datain_pio) 782 wdc->datain_pio = wdc_datain_pio; 783 if (!wdc->dataout_pio) 784 wdc->dataout_pio = wdc_dataout_pio; 785 786 /* initialise global data */ 787 callout_init(&chp->ch_callout); 788 if (wdc->drv_probe == NULL) 789 wdc->drv_probe = wdc_drvprobe; 790 791 TAILQ_INIT(&chp->ch_queue->queue_xfer); 792 chp->ch_queue->queue_freeze = 0; 793 chp->ch_queue->active_xfer = NULL; 794 795 chp->atabus = config_found(&wdc->sc_dev, chp, atabusprint); 796 } 797 798 int 799 wdcactivate(struct device *self, enum devact act) 800 { 801 struct wdc_softc *wdc = (struct wdc_softc *)self; 802 int s, i, error = 0; 803 804 s = splbio(); 805 switch (act) { 806 case DVACT_ACTIVATE: 807 error = EOPNOTSUPP; 808 break; 809 810 case DVACT_DEACTIVATE: 811 for (i = 0; i < wdc->nchannels; i++) { 812 error = config_deactivate(wdc->channels[i]->atabus); 813 if (error) 814 break; 815 } 816 break; 817 } 818 splx(s); 819 return (error); 820 } 821 822 int 823 wdcdetach(struct device *self, int flags) 824 { 825 struct wdc_softc *wdc = (struct wdc_softc *)self; 826 struct wdc_channel *chp; 827 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 828 int i, error = 0; 829 830 for (i = 0; i < wdc->nchannels; i++) { 831 chp = wdc->channels[i]; 832 ATADEBUG_PRINT(("wdcdetach: %s: detaching %s\n", 833 wdc->sc_dev.dv_xname, chp->atabus->dv_xname), DEBUG_DETACH); 834 error = config_detach(chp->atabus, flags); 835 if (error) 836 break; 837 } 838 if (adapt->adapt_refcnt != 0) { 839 #ifdef DIAGNOSTIC 840 printf("wdcdetach: refcnt should be 0 here??\n"); 841 #endif 842 (void) (*adapt->adapt_enable)(&wdc->sc_dev, 0); 843 } 844 return (error); 845 } 846 847 /* restart an interrupted I/O */ 848 void 849 wdcrestart(void *v) 850 { 851 struct wdc_channel *chp = v; 852 int s; 853 854 s = splbio(); 855 atastart(chp); 856 splx(s); 857 } 858 859 860 /* 861 * Interrupt routine for the controller. Acknowledge the interrupt, check for 862 * errors on the current operation, mark it done if necessary, and start the 863 * next request. Also check for a partially done transfer, and continue with 864 * the next chunk if so. 865 */ 866 int 867 wdcintr(void *arg) 868 { 869 struct wdc_channel *chp = arg; 870 struct wdc_softc *wdc = chp->ch_wdc; 871 struct ata_xfer *xfer; 872 int ret; 873 874 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 875 ATADEBUG_PRINT(("wdcintr: deactivated controller\n"), 876 DEBUG_INTR); 877 return (0); 878 } 879 if ((chp->ch_flags & WDCF_IRQ_WAIT) == 0) { 880 ATADEBUG_PRINT(("wdcintr: inactive controller\n"), DEBUG_INTR); 881 /* try to clear the pending interrupt anyway */ 882 (void)bus_space_read_1(chp->cmd_iot, 883 chp->cmd_iohs[wd_status], 0); 884 return (0); 885 } 886 887 ATADEBUG_PRINT(("wdcintr\n"), DEBUG_INTR); 888 xfer = chp->ch_queue->active_xfer; 889 #ifdef DIAGNOSTIC 890 if (xfer == NULL) 891 panic("wdcintr: no xfer"); 892 #endif 893 if (chp->ch_flags & WDCF_DMA_WAIT) { 894 wdc->dma_status = 895 (*wdc->dma_finish)(wdc->dma_arg, chp->ch_channel, 896 xfer->c_drive, WDC_DMAEND_END); 897 if (wdc->dma_status & WDC_DMAST_NOIRQ) { 898 /* IRQ not for us, not detected by DMA engine */ 899 return 0; 900 } 901 chp->ch_flags &= ~WDCF_DMA_WAIT; 902 } 903 chp->ch_flags &= ~WDCF_IRQ_WAIT; 904 ret = xfer->c_intr(chp, xfer, 1); 905 if (ret == 0) /* irq was not for us, still waiting for irq */ 906 chp->ch_flags |= WDCF_IRQ_WAIT; 907 return (ret); 908 } 909 910 /* Put all disk in RESET state */ 911 void 912 wdc_reset_drive(struct ata_drive_datas *drvp, int flags) 913 { 914 struct wdc_channel *chp = drvp->chnl_softc; 915 struct wdc_softc *wdc = chp->ch_wdc; 916 ATADEBUG_PRINT(("ata_reset_channel %s:%d for drive %d\n", 917 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 918 DEBUG_FUNCS); 919 920 921 wdc_reset_channel(chp, flags); 922 } 923 924 void 925 wdc_reset_channel(struct wdc_channel *chp, int flags) 926 { 927 TAILQ_HEAD(, ata_xfer) reset_xfer; 928 struct ata_xfer *xfer, *next_xfer; 929 int drive; 930 931 chp->ch_queue->queue_freeze++; 932 TAILQ_INIT(&reset_xfer); 933 934 /* if we can poll or wait it's OK, otherwise wake up the kernel 935 * thread 936 */ 937 if ((flags & (AT_POLL | AT_WAIT)) == 0) { 938 if (chp->ch_flags & WDCF_TH_RESET) { 939 /* no need to schedule a reset more than one time */ 940 return; 941 } 942 chp->ch_flags |= WDCF_TH_RESET; 943 chp->ch_reset_flags = flags & (AT_RST_EMERG | AT_RST_NOCMD); 944 wakeup(&chp->ch_thread); 945 return; 946 } 947 948 chp->ch_flags &= ~WDCF_IRQ_WAIT; 949 /* 950 * if the current command if on an ATAPI device, issue a 951 * ATAPI_SOFT_RESET 952 */ 953 xfer = chp->ch_queue->active_xfer; 954 if (xfer && xfer->c_chp == chp && (xfer->c_flags & C_ATAPI)) { 955 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 956 if (flags & AT_WAIT) 957 tsleep(&flags, PRIBIO, "atardl", mstohz(1) + 1); 958 else 959 delay(1000); 960 } 961 962 /* reset the channel */ 963 if (flags & AT_WAIT) 964 (void) wdcreset(chp, RESET_SLEEP); 965 else 966 (void) wdcreset(chp, RESET_POLL); 967 968 /* 969 * wait a bit after reset; in case the DMA engines needs some time 970 * to recover. 971 */ 972 if (flags & AT_WAIT) 973 tsleep(&flags, PRIBIO, "atardl", mstohz(1) + 1); 974 else 975 delay(1000); 976 /* 977 * look for pending xfers. If we have a shared queue, we'll also reset 978 * the other channel if the current xfer is running on it. 979 * Then we'll dequeue only the xfers for this channel. 980 */ 981 if ((flags & AT_RST_NOCMD) == 0) { 982 /* 983 * move all xfers queued for this channel to the reset queue, 984 * and then process the current xfer and then the reset queue. 985 * We have to use a temporary queue because c_kill_xfer() 986 * may requeue commands. 987 */ 988 for (xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); 989 xfer != NULL; xfer = next_xfer) { 990 next_xfer = TAILQ_NEXT(xfer, c_xferchain); 991 if (xfer->c_chp != chp) 992 continue; 993 TAILQ_REMOVE(&chp->ch_queue->queue_xfer, 994 xfer, c_xferchain); 995 TAILQ_INSERT_TAIL(&reset_xfer, xfer, c_xferchain); 996 } 997 xfer = chp->ch_queue->active_xfer; 998 if (xfer) { 999 if (xfer->c_chp != chp) 1000 wdc_reset_channel(xfer->c_chp, flags); 1001 else { 1002 callout_stop(&chp->ch_callout); 1003 /* 1004 * If we're waiting for DMA, stop the 1005 * DMA engine 1006 */ 1007 if (chp->ch_flags & WDCF_DMA_WAIT) { 1008 (*chp->ch_wdc->dma_finish)( 1009 chp->ch_wdc->dma_arg, 1010 chp->ch_channel, 1011 xfer->c_drive, 1012 WDC_DMAEND_ABRT_QUIET); 1013 chp->ch_flags &= ~WDCF_DMA_WAIT; 1014 } 1015 chp->ch_queue->active_xfer = NULL; 1016 if ((flags & AT_RST_EMERG) == 0) 1017 xfer->c_kill_xfer( 1018 chp, xfer, KILL_RESET); 1019 } 1020 } 1021 1022 for (xfer = TAILQ_FIRST(&reset_xfer); 1023 xfer != NULL; xfer = next_xfer) { 1024 next_xfer = TAILQ_NEXT(xfer, c_xferchain); 1025 TAILQ_REMOVE(&reset_xfer, xfer, c_xferchain); 1026 if ((flags & AT_RST_EMERG) == 0) 1027 xfer->c_kill_xfer(chp, xfer, KILL_RESET); 1028 } 1029 } 1030 for (drive = 0; drive < 2; drive++) { 1031 chp->ch_drive[drive].state = 0; 1032 } 1033 chp->ch_flags &= ~WDCF_TH_RESET; 1034 if ((flags & AT_RST_EMERG) == 0) { 1035 chp->ch_queue->queue_freeze--; 1036 atastart(chp); 1037 } else { 1038 /* make sure that we can use polled commands */ 1039 TAILQ_INIT(&chp->ch_queue->queue_xfer); 1040 chp->ch_queue->queue_freeze = 0; 1041 chp->ch_queue->active_xfer = NULL; 1042 } 1043 } 1044 1045 int 1046 wdcreset(struct wdc_channel *chp, int poll) 1047 { 1048 struct wdc_softc *wdc = chp->ch_wdc; 1049 int drv_mask1, drv_mask2; 1050 int s = 0; 1051 1052 if (wdc->select) 1053 wdc->select(chp,0); 1054 if (poll != RESET_SLEEP) 1055 s = splbio(); 1056 /* master */ 1057 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, WDSD_IBM); 1058 delay(10); /* 400ns delay */ 1059 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1060 WDCTL_RST | WDCTL_IDS | WDCTL_4BIT); 1061 delay(2000); 1062 (void) bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_error], 0); 1063 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1064 WDCTL_4BIT | WDCTL_IDS); 1065 delay(10); /* 400ns delay */ 1066 if (poll != RESET_SLEEP) { 1067 if (wdc->irqack) 1068 wdc->irqack(chp); 1069 splx(s); 1070 } 1071 1072 drv_mask1 = (chp->ch_drive[0].drive_flags & DRIVE) ? 0x01:0x00; 1073 drv_mask1 |= (chp->ch_drive[1].drive_flags & DRIVE) ? 0x02:0x00; 1074 drv_mask2 = __wdcwait_reset(chp, drv_mask1, 1075 (poll == RESET_SLEEP) ? 0 : 1); 1076 if (drv_mask2 != drv_mask1) { 1077 printf("%s channel %d: reset failed for", 1078 wdc->sc_dev.dv_xname, chp->ch_channel); 1079 if ((drv_mask1 & 0x01) != 0 && (drv_mask2 & 0x01) == 0) 1080 printf(" drive 0"); 1081 if ((drv_mask1 & 0x02) != 0 && (drv_mask2 & 0x02) == 0) 1082 printf(" drive 1"); 1083 printf("\n"); 1084 } 1085 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 1086 return (drv_mask1 != drv_mask2) ? 1 : 0; 1087 } 1088 1089 static int 1090 __wdcwait_reset(struct wdc_channel *chp, int drv_mask, int poll) 1091 { 1092 struct wdc_softc *wdc = chp->ch_wdc; 1093 int timeout, nloop; 1094 u_int8_t st0 = 0, st1 = 0; 1095 #ifdef ATADEBUG 1096 u_int8_t sc0 = 0, sn0 = 0, cl0 = 0, ch0 = 0; 1097 u_int8_t sc1 = 0, sn1 = 0, cl1 = 0, ch1 = 0; 1098 #endif 1099 1100 if (poll) 1101 nloop = WDCNDELAY_RST; 1102 else 1103 nloop = WDC_RESET_WAIT * hz / 1000; 1104 /* wait for BSY to deassert */ 1105 for (timeout = 0; timeout < nloop; timeout++) { 1106 if ((drv_mask & 0x01) != 0) { 1107 if (wdc && wdc->select) 1108 wdc->select(chp,0); 1109 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 1110 0, WDSD_IBM); /* master */ 1111 delay(10); 1112 st0 = bus_space_read_1(chp->cmd_iot, 1113 chp->cmd_iohs[wd_status], 0); 1114 #ifdef ATADEBUG 1115 sc0 = bus_space_read_1(chp->cmd_iot, 1116 chp->cmd_iohs[wd_seccnt], 0); 1117 sn0 = bus_space_read_1(chp->cmd_iot, 1118 chp->cmd_iohs[wd_sector], 0); 1119 cl0 = bus_space_read_1(chp->cmd_iot, 1120 chp->cmd_iohs[wd_cyl_lo], 0); 1121 ch0 = bus_space_read_1(chp->cmd_iot, 1122 chp->cmd_iohs[wd_cyl_hi], 0); 1123 #endif 1124 } 1125 if ((drv_mask & 0x02) != 0) { 1126 if (wdc && wdc->select) 1127 wdc->select(chp,1); 1128 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 1129 0, WDSD_IBM | 0x10); /* slave */ 1130 delay(10); 1131 st1 = bus_space_read_1(chp->cmd_iot, 1132 chp->cmd_iohs[wd_status], 0); 1133 #ifdef ATADEBUG 1134 sc1 = bus_space_read_1(chp->cmd_iot, 1135 chp->cmd_iohs[wd_seccnt], 0); 1136 sn1 = bus_space_read_1(chp->cmd_iot, 1137 chp->cmd_iohs[wd_sector], 0); 1138 cl1 = bus_space_read_1(chp->cmd_iot, 1139 chp->cmd_iohs[wd_cyl_lo], 0); 1140 ch1 = bus_space_read_1(chp->cmd_iot, 1141 chp->cmd_iohs[wd_cyl_hi], 0); 1142 #endif 1143 } 1144 1145 if ((drv_mask & 0x01) == 0) { 1146 /* no master */ 1147 if ((drv_mask & 0x02) != 0 && (st1 & WDCS_BSY) == 0) { 1148 /* No master, slave is ready, it's done */ 1149 goto end; 1150 } 1151 } else if ((drv_mask & 0x02) == 0) { 1152 /* no slave */ 1153 if ((drv_mask & 0x01) != 0 && (st0 & WDCS_BSY) == 0) { 1154 /* No slave, master is ready, it's done */ 1155 goto end; 1156 } 1157 } else { 1158 /* Wait for both master and slave to be ready */ 1159 if ((st0 & WDCS_BSY) == 0 && (st1 & WDCS_BSY) == 0) { 1160 goto end; 1161 } 1162 } 1163 if (poll) 1164 delay(WDCDELAY); 1165 else 1166 tsleep(&nloop, PRIBIO, "atarst", 1); 1167 } 1168 /* Reset timed out. Maybe it's because drv_mask was not right */ 1169 if (st0 & WDCS_BSY) 1170 drv_mask &= ~0x01; 1171 if (st1 & WDCS_BSY) 1172 drv_mask &= ~0x02; 1173 end: 1174 ATADEBUG_PRINT(("%s:%d:0: after reset, sc=0x%x sn=0x%x " 1175 "cl=0x%x ch=0x%x\n", 1176 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 1177 chp->ch_channel, sc0, sn0, cl0, ch0), DEBUG_PROBE); 1178 ATADEBUG_PRINT(("%s:%d:1: after reset, sc=0x%x sn=0x%x " 1179 "cl=0x%x ch=0x%x\n", 1180 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", 1181 chp->ch_channel, sc1, sn1, cl1, ch1), DEBUG_PROBE); 1182 1183 ATADEBUG_PRINT(("%s:%d: wdcwait_reset() end, st0=0x%x st1=0x%x\n", 1184 wdc != NULL ? wdc->sc_dev.dv_xname : "wdcprobe", chp->ch_channel, 1185 st0, st1), DEBUG_PROBE); 1186 1187 return drv_mask; 1188 } 1189 1190 /* 1191 * Wait for a drive to be !BSY, and have mask in its status register. 1192 * return -1 for a timeout after "timeout" ms. 1193 */ 1194 static int 1195 __wdcwait(struct wdc_channel *chp, int mask, int bits, int timeout) 1196 { 1197 struct wdc_softc *wdc = chp->ch_wdc; 1198 u_char status; 1199 int time = 0; 1200 1201 ATADEBUG_PRINT(("__wdcwait %s:%d\n", wdc != NULL ? 1202 wdc->sc_dev.dv_xname : "none", 1203 chp->ch_channel), DEBUG_STATUS); 1204 chp->ch_error = 0; 1205 1206 timeout = timeout * 1000 / WDCDELAY; /* delay uses microseconds */ 1207 1208 for (;;) { 1209 chp->ch_status = status = 1210 bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_status], 0); 1211 if ((status & (WDCS_BSY | mask)) == bits) 1212 break; 1213 if (++time > timeout) { 1214 ATADEBUG_PRINT(("__wdcwait: timeout (time=%d), " 1215 "status %x error %x (mask 0x%x bits 0x%x)\n", 1216 time, status, 1217 bus_space_read_1(chp->cmd_iot, 1218 chp->cmd_iohs[wd_error], 0), mask, bits), 1219 DEBUG_STATUS | DEBUG_PROBE | DEBUG_DELAY); 1220 return(WDCWAIT_TOUT); 1221 } 1222 delay(WDCDELAY); 1223 } 1224 #ifdef ATADEBUG 1225 if (time > 0 && (atadebug_mask & DEBUG_DELAY)) 1226 printf("__wdcwait: did busy-wait, time=%d\n", time); 1227 #endif 1228 if (status & WDCS_ERR) 1229 chp->ch_error = bus_space_read_1(chp->cmd_iot, 1230 chp->cmd_iohs[wd_error], 0); 1231 #ifdef WDCNDELAY_DEBUG 1232 /* After autoconfig, there should be no long delays. */ 1233 if (!cold && time > WDCNDELAY_DEBUG) { 1234 struct ata_xfer *xfer = chp->ch_queue->active_xfer; 1235 if (xfer == NULL) 1236 printf("%s channel %d: warning: busy-wait took %dus\n", 1237 wdc->sc_dev.dv_xname, chp->ch_channel, 1238 WDCDELAY * time); 1239 else 1240 printf("%s:%d:%d: warning: busy-wait took %dus\n", 1241 wdc->sc_dev.dv_xname, chp->ch_channel, 1242 xfer->drive, 1243 WDCDELAY * time); 1244 } 1245 #endif 1246 return(WDCWAIT_OK); 1247 } 1248 1249 /* 1250 * Call __wdcwait(), polling using tsleep() or waking up the kernel 1251 * thread if possible 1252 */ 1253 int 1254 wdcwait(struct wdc_channel *chp, int mask, int bits, int timeout, int flags) 1255 { 1256 int error, i, timeout_hz = mstohz(timeout); 1257 1258 if (timeout_hz == 0 || 1259 (flags & (AT_WAIT | AT_POLL)) == AT_POLL) 1260 error = __wdcwait(chp, mask, bits, timeout); 1261 else { 1262 error = __wdcwait(chp, mask, bits, WDCDELAY_POLL); 1263 if (error != 0) { 1264 if ((chp->ch_flags & WDCF_TH_RUN) || 1265 (flags & AT_WAIT)) { 1266 /* 1267 * we're running in the channel thread 1268 * or some userland thread context 1269 */ 1270 for (i = 0; i < timeout_hz; i++) { 1271 if (__wdcwait(chp, mask, bits, 1272 WDCDELAY_POLL) == 0) { 1273 error = 0; 1274 break; 1275 } 1276 tsleep(&chp, PRIBIO, "atapoll", 1); 1277 } 1278 } else { 1279 /* 1280 * we're probably in interrupt context, 1281 * ask the thread to come back here 1282 */ 1283 #ifdef DIAGNOSTIC 1284 if (chp->ch_queue->queue_freeze > 0) 1285 panic("wdcwait: queue_freeze"); 1286 #endif 1287 chp->ch_queue->queue_freeze++; 1288 wakeup(&chp->ch_thread); 1289 return(WDCWAIT_THR); 1290 } 1291 } 1292 } 1293 return (error); 1294 } 1295 1296 1297 /* 1298 * Busy-wait for DMA to complete 1299 */ 1300 int 1301 wdc_dmawait(struct wdc_channel *chp, struct ata_xfer *xfer, int timeout) 1302 { 1303 struct wdc_softc *wdc = chp->ch_wdc; 1304 int time; 1305 1306 for (time = 0; time < timeout * 1000 / WDCDELAY; time++) { 1307 wdc->dma_status = 1308 (*wdc->dma_finish)(wdc->dma_arg, 1309 chp->ch_channel, xfer->c_drive, WDC_DMAEND_END); 1310 if ((wdc->dma_status & WDC_DMAST_NOIRQ) == 0) 1311 return 0; 1312 delay(WDCDELAY); 1313 } 1314 /* timeout, force a DMA halt */ 1315 wdc->dma_status = (*wdc->dma_finish)(wdc->dma_arg, 1316 chp->ch_channel, xfer->c_drive, WDC_DMAEND_ABRT); 1317 return 1; 1318 } 1319 1320 void 1321 wdctimeout(void *arg) 1322 { 1323 struct wdc_channel *chp = (struct wdc_channel *)arg; 1324 struct wdc_softc *wdc = chp->ch_wdc; 1325 struct ata_xfer *xfer = chp->ch_queue->active_xfer; 1326 int s; 1327 1328 ATADEBUG_PRINT(("wdctimeout\n"), DEBUG_FUNCS); 1329 1330 s = splbio(); 1331 if ((chp->ch_flags & WDCF_IRQ_WAIT) != 0) { 1332 __wdcerror(chp, "lost interrupt"); 1333 printf("\ttype: %s tc_bcount: %d tc_skip: %d\n", 1334 (xfer->c_flags & C_ATAPI) ? "atapi" : "ata", 1335 xfer->c_bcount, 1336 xfer->c_skip); 1337 if (chp->ch_flags & WDCF_DMA_WAIT) { 1338 wdc->dma_status = 1339 (*wdc->dma_finish)(wdc->dma_arg, 1340 chp->ch_channel, xfer->c_drive, 1341 WDC_DMAEND_ABRT); 1342 chp->ch_flags &= ~WDCF_DMA_WAIT; 1343 } 1344 /* 1345 * Call the interrupt routine. If we just missed an interrupt, 1346 * it will do what's needed. Else, it will take the needed 1347 * action (reset the device). 1348 * Before that we need to reinstall the timeout callback, 1349 * in case it will miss another irq while in this transfer 1350 * We arbitray chose it to be 1s 1351 */ 1352 callout_reset(&chp->ch_callout, hz, wdctimeout, chp); 1353 xfer->c_flags |= C_TIMEOU; 1354 chp->ch_flags &= ~WDCF_IRQ_WAIT; 1355 xfer->c_intr(chp, xfer, 1); 1356 } else 1357 __wdcerror(chp, "missing untimeout"); 1358 splx(s); 1359 } 1360 1361 int 1362 wdc_exec_command(struct ata_drive_datas *drvp, struct ata_command *ata_c) 1363 { 1364 struct wdc_channel *chp = drvp->chnl_softc; 1365 struct wdc_softc *wdc = chp->ch_wdc; 1366 struct ata_xfer *xfer; 1367 int s, ret; 1368 1369 ATADEBUG_PRINT(("wdc_exec_command %s:%d:%d\n", 1370 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 1371 DEBUG_FUNCS); 1372 1373 /* set up an xfer and queue. Wait for completion */ 1374 xfer = ata_get_xfer(ata_c->flags & AT_WAIT ? ATAXF_CANSLEEP : 1375 ATAXF_NOSLEEP); 1376 if (xfer == NULL) { 1377 return ATACMD_TRY_AGAIN; 1378 } 1379 1380 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 1381 ata_c->flags |= AT_POLL; 1382 if (ata_c->flags & AT_POLL) 1383 xfer->c_flags |= C_POLL; 1384 xfer->c_drive = drvp->drive; 1385 xfer->c_databuf = ata_c->data; 1386 xfer->c_bcount = ata_c->bcount; 1387 xfer->c_cmd = ata_c; 1388 xfer->c_start = __wdccommand_start; 1389 xfer->c_intr = __wdccommand_intr; 1390 xfer->c_kill_xfer = __wdccommand_kill_xfer; 1391 1392 s = splbio(); 1393 ata_exec_xfer(chp, xfer); 1394 #ifdef DIAGNOSTIC 1395 if ((ata_c->flags & AT_POLL) != 0 && 1396 (ata_c->flags & AT_DONE) == 0) 1397 panic("wdc_exec_command: polled command not done"); 1398 #endif 1399 if (ata_c->flags & AT_DONE) { 1400 ret = ATACMD_COMPLETE; 1401 } else { 1402 if (ata_c->flags & AT_WAIT) { 1403 while ((ata_c->flags & AT_DONE) == 0) { 1404 tsleep(ata_c, PRIBIO, "wdccmd", 0); 1405 } 1406 ret = ATACMD_COMPLETE; 1407 } else { 1408 ret = ATACMD_QUEUED; 1409 } 1410 } 1411 splx(s); 1412 return ret; 1413 } 1414 1415 static void 1416 __wdccommand_start(struct wdc_channel *chp, struct ata_xfer *xfer) 1417 { 1418 struct wdc_softc *wdc = chp->ch_wdc; 1419 int drive = xfer->c_drive; 1420 struct ata_command *ata_c = xfer->c_cmd; 1421 1422 ATADEBUG_PRINT(("__wdccommand_start %s:%d:%d\n", 1423 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1424 DEBUG_FUNCS); 1425 1426 if (wdc->select) 1427 wdc->select(chp,drive); 1428 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1429 WDSD_IBM | (drive << 4)); 1430 switch(wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1431 ata_c->r_st_bmask, ata_c->timeout, ata_c->flags)) { 1432 case WDCWAIT_OK: 1433 break; 1434 case WDCWAIT_TOUT: 1435 ata_c->flags |= AT_TIMEOU; 1436 __wdccommand_done(chp, xfer); 1437 return; 1438 case WDCWAIT_THR: 1439 return; 1440 } 1441 if (ata_c->flags & AT_POLL) { 1442 /* polled command, disable interrupts */ 1443 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1444 WDCTL_4BIT | WDCTL_IDS); 1445 } 1446 wdccommand(chp, drive, ata_c->r_command, ata_c->r_cyl, ata_c->r_head, 1447 ata_c->r_sector, ata_c->r_count, ata_c->r_features); 1448 1449 if ((ata_c->flags & AT_POLL) == 0) { 1450 chp->ch_flags |= WDCF_IRQ_WAIT; /* wait for interrupt */ 1451 callout_reset(&chp->ch_callout, ata_c->timeout / 1000 * hz, 1452 wdctimeout, chp); 1453 return; 1454 } 1455 /* 1456 * Polled command. Wait for drive ready or drq. Done in intr(). 1457 * Wait for at last 400ns for status bit to be valid. 1458 */ 1459 delay(10); /* 400ns delay */ 1460 __wdccommand_intr(chp, xfer, 0); 1461 } 1462 1463 static int 1464 __wdccommand_intr(struct wdc_channel *chp, struct ata_xfer *xfer, int irq) 1465 { 1466 struct wdc_softc *wdc = chp->ch_wdc; 1467 struct ata_command *ata_c = xfer->c_cmd; 1468 int bcount = ata_c->bcount; 1469 char *data = ata_c->data; 1470 int wflags; 1471 1472 if ((ata_c->flags & (AT_WAIT | AT_POLL)) == (AT_WAIT | AT_POLL)) { 1473 /* both wait and poll, we can tsleep here */ 1474 wflags = AT_WAIT | AT_POLL; 1475 } else { 1476 wflags = AT_POLL; 1477 } 1478 1479 again: 1480 ATADEBUG_PRINT(("__wdccommand_intr %s:%d:%d\n", 1481 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1482 DEBUG_INTR); 1483 /* 1484 * after a ATAPI_SOFT_RESET, the device will have released the bus. 1485 * Reselect again, it doesn't hurt for others commands, and the time 1486 * penalty for the extra regiter write is acceptable, 1487 * wdc_exec_command() isn't called often (mosly for autoconfig) 1488 */ 1489 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1490 WDSD_IBM | (xfer->c_drive << 4)); 1491 if ((ata_c->flags & AT_XFDONE) != 0) { 1492 /* 1493 * We have completed a data xfer. The drive should now be 1494 * in its initial state 1495 */ 1496 if (wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1497 ata_c->r_st_bmask, (irq == 0) ? ata_c->timeout : 0, 1498 wflags) == WDCWAIT_TOUT) { 1499 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 1500 return 0; /* IRQ was not for us */ 1501 ata_c->flags |= AT_TIMEOU; 1502 } 1503 goto out; 1504 } 1505 if (wdcwait(chp, ata_c->r_st_pmask, ata_c->r_st_pmask, 1506 (irq == 0) ? ata_c->timeout : 0, wflags) == WDCWAIT_TOUT) { 1507 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 1508 return 0; /* IRQ was not for us */ 1509 ata_c->flags |= AT_TIMEOU; 1510 goto out; 1511 } 1512 if (wdc->irqack) 1513 wdc->irqack(chp); 1514 if (ata_c->flags & AT_READ) { 1515 if ((chp->ch_status & WDCS_DRQ) == 0) { 1516 ata_c->flags |= AT_TIMEOU; 1517 goto out; 1518 } 1519 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_CAP32) { 1520 bus_space_read_multi_4(chp->data32iot, chp->data32ioh, 1521 0, (u_int32_t*)data, bcount >> 2); 1522 data += bcount & 0xfffffffc; 1523 bcount = bcount & 0x03; 1524 } 1525 if (bcount > 0) 1526 wdc->datain_pio(chp, DRIVE_NOSTREAM, data, bcount); 1527 /* at this point the drive should be in its initial state */ 1528 ata_c->flags |= AT_XFDONE; 1529 /* XXX should read status register here ? */ 1530 } else if (ata_c->flags & AT_WRITE) { 1531 if ((chp->ch_status & WDCS_DRQ) == 0) { 1532 ata_c->flags |= AT_TIMEOU; 1533 goto out; 1534 } 1535 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_CAP32) { 1536 bus_space_write_multi_4(chp->data32iot, chp->data32ioh, 1537 0, (u_int32_t*)data, bcount >> 2); 1538 data += bcount & 0xfffffffc; 1539 bcount = bcount & 0x03; 1540 } 1541 if (bcount > 0) 1542 wdc->dataout_pio(chp, DRIVE_NOSTREAM, data, bcount); 1543 ata_c->flags |= AT_XFDONE; 1544 if ((ata_c->flags & AT_POLL) == 0) { 1545 chp->ch_flags |= WDCF_IRQ_WAIT; /* wait for interrupt */ 1546 callout_reset(&chp->ch_callout, 1547 ata_c->timeout / 1000 * hz, wdctimeout, chp); 1548 return 1; 1549 } else { 1550 goto again; 1551 } 1552 } 1553 out: 1554 __wdccommand_done(chp, xfer); 1555 return 1; 1556 } 1557 1558 static void 1559 __wdccommand_done(struct wdc_channel *chp, struct ata_xfer *xfer) 1560 { 1561 struct wdc_softc *wdc = chp->ch_wdc; 1562 struct ata_command *ata_c = xfer->c_cmd; 1563 1564 ATADEBUG_PRINT(("__wdccommand_done %s:%d:%d\n", 1565 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive), 1566 DEBUG_FUNCS); 1567 1568 1569 if (chp->ch_status & WDCS_DWF) 1570 ata_c->flags |= AT_DF; 1571 if (chp->ch_status & WDCS_ERR) { 1572 ata_c->flags |= AT_ERROR; 1573 ata_c->r_error = chp->ch_error; 1574 } 1575 if ((ata_c->flags & AT_READREG) != 0 && 1576 (wdc->sc_dev.dv_flags & DVF_ACTIVE) != 0 && 1577 (ata_c->flags & (AT_ERROR | AT_DF)) == 0) { 1578 ata_c->r_head = bus_space_read_1(chp->cmd_iot, 1579 chp->cmd_iohs[wd_sdh], 0); 1580 ata_c->r_count = bus_space_read_1(chp->cmd_iot, 1581 chp->cmd_iohs[wd_seccnt], 0); 1582 ata_c->r_sector = bus_space_read_1(chp->cmd_iot, 1583 chp->cmd_iohs[wd_sector], 0); 1584 ata_c->r_cyl |= bus_space_read_1(chp->cmd_iot, 1585 chp->cmd_iohs[wd_cyl_lo], 0); 1586 ata_c->r_cyl = bus_space_read_1(chp->cmd_iot, 1587 chp->cmd_iohs[wd_cyl_hi], 0) << 8; 1588 ata_c->r_error = bus_space_read_1(chp->cmd_iot, 1589 chp->cmd_iohs[wd_error], 0); 1590 ata_c->r_features = bus_space_read_1(chp->cmd_iot, 1591 chp->cmd_iohs[wd_features], 0); 1592 } 1593 callout_stop(&chp->ch_callout); 1594 chp->ch_queue->active_xfer = NULL; 1595 if (ata_c->flags & AT_POLL) { 1596 /* enable interrupts */ 1597 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 1598 WDCTL_4BIT); 1599 delay(10); /* some drives need a little delay here */ 1600 } 1601 if (chp->ch_drive[xfer->c_drive].drive_flags & DRIVE_WAITDRAIN) { 1602 __wdccommand_kill_xfer(chp, xfer, KILL_GONE); 1603 chp->ch_drive[xfer->c_drive].drive_flags &= ~DRIVE_WAITDRAIN; 1604 wakeup(&chp->ch_queue->active_xfer); 1605 } else 1606 __wdccommand_done_end(chp, xfer); 1607 } 1608 1609 static void 1610 __wdccommand_done_end(struct wdc_channel *chp, struct ata_xfer *xfer) 1611 { 1612 struct ata_command *ata_c = xfer->c_cmd; 1613 1614 ata_c->flags |= AT_DONE; 1615 ata_free_xfer(chp, xfer); 1616 if (ata_c->flags & AT_WAIT) 1617 wakeup(ata_c); 1618 else if (ata_c->callback) 1619 ata_c->callback(ata_c->callback_arg); 1620 atastart(chp); 1621 return; 1622 } 1623 1624 static void 1625 __wdccommand_kill_xfer(struct wdc_channel *chp, struct ata_xfer *xfer, 1626 int reason) 1627 { 1628 struct ata_command *ata_c = xfer->c_cmd; 1629 1630 switch (reason) { 1631 case KILL_GONE: 1632 ata_c->flags |= AT_GONE; 1633 break; 1634 case KILL_RESET: 1635 ata_c->flags |= AT_RESET; 1636 break; 1637 default: 1638 printf("__wdccommand_kill_xfer: unknown reason %d\n", 1639 reason); 1640 panic("__wdccommand_kill_xfer"); 1641 } 1642 __wdccommand_done_end(chp, xfer); 1643 } 1644 1645 /* 1646 * Send a command. The drive should be ready. 1647 * Assumes interrupts are blocked. 1648 */ 1649 void 1650 wdccommand(struct wdc_channel *chp, u_int8_t drive, u_int8_t command, 1651 u_int16_t cylin, u_int8_t head, u_int8_t sector, u_int8_t count, 1652 u_int8_t features) 1653 { 1654 struct wdc_softc *wdc = chp->ch_wdc; 1655 1656 ATADEBUG_PRINT(("wdccommand %s:%d:%d: command=0x%x cylin=%d head=%d " 1657 "sector=%d count=%d features=%d\n", wdc->sc_dev.dv_xname, 1658 chp->ch_channel, drive, command, cylin, head, sector, count, 1659 features), DEBUG_FUNCS); 1660 1661 if (wdc->select) 1662 wdc->select(chp,drive); 1663 1664 /* Select drive, head, and addressing mode. */ 1665 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1666 WDSD_IBM | (drive << 4) | head); 1667 /* Load parameters into the wd_features register. */ 1668 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 1669 features); 1670 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 0, count); 1671 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sector], 0, sector); 1672 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_lo], 0, cylin); 1673 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_hi], 1674 0, cylin >> 8); 1675 1676 /* Send command. */ 1677 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1678 return; 1679 } 1680 1681 /* 1682 * Send a 48-bit addressing command. The drive should be ready. 1683 * Assumes interrupts are blocked. 1684 */ 1685 void 1686 wdccommandext(struct wdc_channel *chp, u_int8_t drive, u_int8_t command, 1687 u_int64_t blkno, u_int16_t count) 1688 { 1689 struct wdc_softc *wdc = chp->ch_wdc; 1690 1691 ATADEBUG_PRINT(("wdccommandext %s:%d:%d: command=0x%x blkno=%d " 1692 "count=%d\n", wdc->sc_dev.dv_xname, 1693 chp->ch_channel, drive, command, (u_int32_t) blkno, count), 1694 DEBUG_FUNCS); 1695 1696 if (wdc->select) 1697 wdc->select(chp,drive); 1698 1699 /* Select drive, head, and addressing mode. */ 1700 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1701 (drive << 4) | WDSD_LBA); 1702 1703 /* previous */ 1704 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 0); 1705 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 1706 0, count >> 8); 1707 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_lo], 1708 0, blkno >> 24); 1709 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_mi], 1710 0, blkno >> 32); 1711 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_hi], 1712 0, blkno >> 40); 1713 1714 /* current */ 1715 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_features], 0, 0); 1716 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_seccnt], 0, count); 1717 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_lo], 0, blkno); 1718 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_mi], 1719 0, blkno >> 8); 1720 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_lba_hi], 1721 0, blkno >> 16); 1722 1723 /* Send command. */ 1724 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1725 return; 1726 } 1727 1728 /* 1729 * Simplified version of wdccommand(). Unbusy/ready/drq must be 1730 * tested by the caller. 1731 */ 1732 void 1733 wdccommandshort(struct wdc_channel *chp, int drive, int command) 1734 { 1735 struct wdc_softc *wdc = chp->ch_wdc; 1736 1737 ATADEBUG_PRINT(("wdccommandshort %s:%d:%d command 0x%x\n", 1738 wdc->sc_dev.dv_xname, chp->ch_channel, drive, command), 1739 DEBUG_FUNCS); 1740 1741 if (wdc->select) 1742 wdc->select(chp,drive); 1743 1744 /* Select drive. */ 1745 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 1746 WDSD_IBM | (drive << 4)); 1747 1748 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_command], 0, command); 1749 } 1750 1751 static void 1752 __wdcerror(struct wdc_channel *chp, char *msg) 1753 { 1754 struct wdc_softc *wdc = chp->ch_wdc; 1755 struct ata_xfer *xfer = TAILQ_FIRST(&chp->ch_queue->queue_xfer); 1756 1757 if (xfer == NULL) 1758 printf("%s:%d: %s\n", wdc->sc_dev.dv_xname, chp->ch_channel, 1759 msg); 1760 else 1761 printf("%s:%d:%d: %s\n", wdc->sc_dev.dv_xname, 1762 chp->ch_channel, xfer->c_drive, msg); 1763 } 1764 1765 /* 1766 * the bit bucket 1767 */ 1768 void 1769 wdcbit_bucket(struct wdc_channel *chp, int size) 1770 { 1771 1772 for (; size >= 2; size -= 2) 1773 (void)bus_space_read_2(chp->cmd_iot, chp->cmd_iohs[wd_data], 0); 1774 if (size) 1775 (void)bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_data], 0); 1776 } 1777 1778 void 1779 wdc_datain_pio(chp, flags, buf, len) 1780 struct wdc_channel *chp; 1781 int flags; 1782 void *buf; 1783 size_t len; 1784 { 1785 1786 if (flags & DRIVE_NOSTREAM) { 1787 if (flags & DRIVE_CAP32) { 1788 bus_space_read_multi_4(chp->data32iot, 1789 chp->data32ioh, 0, buf, len >> 2); 1790 buf = (char *)buf + (len & ~3); 1791 len &= 3; 1792 } 1793 if (len) { 1794 bus_space_read_multi_2(chp->cmd_iot, 1795 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1796 } 1797 } else { 1798 if (flags & DRIVE_CAP32) { 1799 bus_space_read_multi_stream_4(chp->data32iot, 1800 chp->data32ioh, 0, buf, len >> 2); 1801 buf = (char *)buf + (len & ~3); 1802 len &= 3; 1803 } 1804 if (len) { 1805 bus_space_read_multi_stream_2(chp->cmd_iot, 1806 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1807 } 1808 } 1809 } 1810 1811 void 1812 wdc_dataout_pio(chp, flags, buf, len) 1813 struct wdc_channel *chp; 1814 int flags; 1815 void *buf; 1816 size_t len; 1817 { 1818 1819 if (flags & DRIVE_NOSTREAM) { 1820 if (flags & DRIVE_CAP32) { 1821 bus_space_write_multi_4(chp->data32iot, 1822 chp->data32ioh, 0, buf, len >> 2); 1823 buf = (char *)buf + (len & ~3); 1824 len &= 3; 1825 } 1826 if (len) { 1827 bus_space_write_multi_2(chp->cmd_iot, 1828 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1829 } 1830 } else { 1831 if (flags & DRIVE_CAP32) { 1832 bus_space_write_multi_stream_4(chp->data32iot, 1833 chp->data32ioh, 0, buf, len >> 2); 1834 buf = (char *)buf + (len & ~3); 1835 len &= 3; 1836 } 1837 if (len) { 1838 bus_space_write_multi_stream_2(chp->cmd_iot, 1839 chp->cmd_iohs[wd_data], 0, buf, len >> 1); 1840 } 1841 } 1842 } 1843
Indexes created Wed Sep 24 15:09:51 GMT 2025