1 /* $NetBSD: wdc.c,v 1.310 2022/05/31 08:43:15 andvar 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /*- 28 * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. 29 * All rights reserved. 30 * 31 * This code is derived from software contributed to The NetBSD Foundation 32 * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 44 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 45 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 46 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 47 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 48 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 49 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 50 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 51 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 52 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 53 * POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 /* 57 * CODE UNTESTED IN THE CURRENT REVISION: 58 */ 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: wdc.c,v 1.310 2022/05/31 08:43:15 andvar Exp $"); 62 63 #include "opt_ata.h" 64 #include "opt_wdc.h" 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/kernel.h> 69 #include <sys/conf.h> 70 #include <sys/buf.h> 71 #include <sys/device.h> 72 #include <sys/malloc.h> 73 #include <sys/kmem.h> 74 #include <sys/syslog.h> 75 #include <sys/proc.h> 76 77 #include <sys/intr.h> 78 #include <sys/bus.h> 79 80 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 81 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 82 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 83 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 84 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 85 #define bus_space_read_stream_2 bus_space_read_2 86 #define bus_space_read_stream_4 bus_space_read_4 87 #define bus_space_write_stream_2 bus_space_write_2 88 #define bus_space_write_stream_4 bus_space_write_4 89 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 90 91 #include <dev/ata/atavar.h> 92 #include <dev/ata/atareg.h> 93 #include <dev/ata/satareg.h> 94 #include <dev/ata/satavar.h> 95 #include <dev/ic/wdcreg.h> 96 #include <dev/ic/wdcvar.h> 97 98 #include "locators.h" 99 100 #include "atapibus.h" 101 #include "wd.h" 102 #include "sata.h" 103 104 #define WDCDELAY 100 /* 100 microseconds */ 105 #define WDCNDELAY_RST (WDC_RESET_WAIT * 1000 / WDCDELAY) 106 #if 0 107 /* If you enable this, it will report any delays more than WDCDELAY * N long. */ 108 #define WDCNDELAY_DEBUG 50 109 #endif 110 111 /* When polling wait that much and then kpause for 1/hz seconds */ 112 #define WDCDELAY_POLL 1 /* ms */ 113 114 /* timeout for the control commands */ 115 #define WDC_CTRL_DELAY 10000 /* 10s, for the recall command */ 116 117 /* 118 * timeout when waiting for BSY to deassert when probing. 119 * set to 5s. From the standards this could be up to 31, but we can't 120 * wait that much at boot time, and 5s seems to be enough. 121 */ 122 #define WDC_PROBE_WAIT 5 123 124 125 #if NWD > 0 126 extern const struct ata_bustype wdc_ata_bustype; /* in ata_wdc.c */ 127 #else 128 /* A fake one, the autoconfig will print "wd at foo ... not configured */ 129 const struct ata_bustype wdc_ata_bustype = { 130 .bustype_type = SCSIPI_BUSTYPE_ATA, 131 .ata_bio = NULL, 132 .ata_reset_drive = NULL, 133 .ata_reset_channel = wdc_reset_channel, 134 .ata_exec_command = wdc_exec_command, 135 .ata_get_params = NULL, 136 .ata_addref = NULL, 137 .ata_delref = NULL, 138 .ata_killpending = NULL, 139 .ata_recovery = NULL, 140 }; 141 #endif 142 143 /* Flags to wdcreset(). */ 144 #define RESET_POLL 1 145 #define RESET_SLEEP 0 /* wdcreset() will use kpause() */ 146 147 static int wdcprobe1(struct ata_channel *, int); 148 static int wdcreset(struct ata_channel *, int); 149 static void __wdcerror(struct ata_channel *, const char *); 150 static int __wdcwait_reset(struct ata_channel *, int, int); 151 static void __wdccommand_done(struct ata_channel *, struct ata_xfer *); 152 static int __wdccommand_poll(struct ata_channel *, struct ata_xfer *); 153 static void __wdccommand_done_end(struct ata_channel *, struct ata_xfer *); 154 static void __wdccommand_kill_xfer(struct ata_channel *, 155 struct ata_xfer *, int); 156 static int __wdccommand_start(struct ata_channel *, struct ata_xfer *); 157 static int __wdccommand_intr(struct ata_channel *, struct ata_xfer *, int); 158 static int __wdcwait(struct ata_channel *, int, int, int, int *); 159 160 static void wdc_datain_pio(struct ata_channel *, int, void *, size_t); 161 static void wdc_dataout_pio(struct ata_channel *, int, void *, size_t); 162 #define DEBUG_INTR 0x01 163 #define DEBUG_XFERS 0x02 164 #define DEBUG_STATUS 0x04 165 #define DEBUG_FUNCS 0x08 166 #define DEBUG_PROBE 0x10 167 #define DEBUG_DETACH 0x20 168 #define DEBUG_DELAY 0x40 169 #ifdef ATADEBUG 170 extern int atadebug_mask; /* init'ed in ata.c */ 171 int wdc_nxfer = 0; 172 #define ATADEBUG_PRINT(args, level) if (atadebug_mask & (level)) printf args 173 #else 174 #define ATADEBUG_PRINT(args, level) 175 #endif 176 177 /* 178 * Initialize the "shadow register" handles for a standard wdc controller. 179 */ 180 void 181 wdc_init_shadow_regs(struct wdc_regs *wdr) 182 { 183 wdr->cmd_iohs[wd_status] = wdr->cmd_iohs[wd_command]; 184 wdr->cmd_iohs[wd_features] = wdr->cmd_iohs[wd_error]; 185 } 186 187 /* 188 * Allocate a wdc_regs array, based on the number of channels. 189 */ 190 void 191 wdc_allocate_regs(struct wdc_softc *wdc) 192 { 193 194 wdc->regs = malloc(wdc->sc_atac.atac_nchannels * 195 sizeof(struct wdc_regs), M_DEVBUF, M_WAITOK); 196 } 197 198 #if NSATA > 0 199 /* 200 * probe drives on SATA controllers with standard SATA registers: 201 * bring the PHYs online, read the drive signature and set drive flags 202 * appropriately. 203 */ 204 void 205 wdc_sataprobe(struct ata_channel *chp) 206 { 207 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 208 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 209 uint8_t st = 0, sc __unused, sn __unused, cl, ch; 210 int i; 211 212 KASSERT(chp->ch_ndrives == 0 || chp->ch_drive != NULL); 213 214 /* do this before we take lock */ 215 216 ata_channel_lock(chp); 217 218 /* reset the PHY and bring online */ 219 switch (sata_reset_interface(chp, wdr->sata_iot, wdr->sata_control, 220 wdr->sata_status, AT_WAIT)) { 221 case SStatus_DET_DEV: 222 /* wait 5s for BSY to clear */ 223 for (i = 0; i < WDC_PROBE_WAIT * hz; i++) { 224 bus_space_write_1(wdr->cmd_iot, 225 wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM); 226 delay(10); /* 400ns delay */ 227 st = bus_space_read_1(wdr->cmd_iot, 228 wdr->cmd_iohs[wd_status], 0); 229 if ((st & WDCS_BSY) == 0) 230 break; 231 ata_delay(chp, 1, "sataprb", AT_WAIT); 232 } 233 if (i == WDC_PROBE_WAIT * hz) 234 aprint_error_dev(chp->ch_atac->atac_dev, 235 "BSY never cleared, status 0x%02x\n", st); 236 sc = bus_space_read_1(wdr->cmd_iot, 237 wdr->cmd_iohs[wd_seccnt], 0); 238 sn = bus_space_read_1(wdr->cmd_iot, 239 wdr->cmd_iohs[wd_sector], 0); 240 cl = bus_space_read_1(wdr->cmd_iot, 241 wdr->cmd_iohs[wd_cyl_lo], 0); 242 ch = bus_space_read_1(wdr->cmd_iot, 243 wdr->cmd_iohs[wd_cyl_hi], 0); 244 ATADEBUG_PRINT(("%s: port %d: sc=0x%x sn=0x%x " 245 "cl=0x%x ch=0x%x\n", 246 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 247 sc, sn, cl, ch), DEBUG_PROBE); 248 if (atabus_alloc_drives(chp, wdc->wdc_maxdrives) != 0) { 249 ata_channel_unlock(chp); 250 return; 251 } 252 /* 253 * sc and sn are supposed to be 0x1 for ATAPI, but in some 254 * cases we get wrong values here, so ignore it. 255 */ 256 if (cl == 0x14 && ch == 0xeb) 257 chp->ch_drive[0].drive_type = ATA_DRIVET_ATAPI; 258 else 259 chp->ch_drive[0].drive_type = ATA_DRIVET_ATA; 260 261 /* 262 * issue a reset in case only the interface part of the drive 263 * is up 264 */ 265 if (wdcreset(chp, RESET_SLEEP) != 0) 266 chp->ch_drive[0].drive_type = ATA_DRIVET_NONE; 267 break; 268 269 default: 270 break; 271 } 272 273 ata_channel_unlock(chp); 274 } 275 #endif /* NSATA > 0 */ 276 277 278 /* Test to see controller with at last one attached drive is there. 279 * Returns a bit for each possible drive found (0x01 for drive 0, 280 * 0x02 for drive 1). 281 * Logic: 282 * - If a status register is at 0xff, assume there is no drive here 283 * (ISA has pull-up resistors). Similarly if the status register has 284 * the value we last wrote to the bus (for IDE interfaces without pullups). 285 * If no drive at all -> return. 286 * - reset the controller, wait for it to complete (may take up to 31s !). 287 * If timeout -> return. 288 * - test ATA/ATAPI signatures. If at last one drive found -> return. 289 * - try an ATA command on the master. 290 */ 291 292 void 293 wdc_drvprobe(struct ata_channel *chp) 294 { 295 struct ataparams params; /* XXX: large struct */ 296 struct atac_softc *atac = chp->ch_atac; 297 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 298 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 299 u_int8_t st0 = 0, st1 = 0; 300 int i, j, error, tfd; 301 302 ata_channel_lock(chp); 303 if (atabus_alloc_drives(chp, wdc->wdc_maxdrives) != 0) { 304 ata_channel_unlock(chp); 305 return; 306 } 307 if (wdcprobe1(chp, 0) == 0) { 308 /* No drives, abort the attach here. */ 309 atabus_free_drives(chp); 310 ata_channel_unlock(chp); 311 return; 312 } 313 314 /* for ATA/OLD drives, wait for DRDY, 3s timeout */ 315 for (i = 0; i < mstohz(3000); i++) { 316 /* 317 * select drive 1 first, so that master is selected on 318 * exit from the loop 319 */ 320 if (chp->ch_ndrives > 1 && 321 chp->ch_drive[1].drive_type == ATA_DRIVET_ATA) { 322 if (wdc->select) 323 wdc->select(chp,1); 324 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 325 0, WDSD_IBM | 0x10); 326 delay(10); /* 400ns delay */ 327 st1 = bus_space_read_1(wdr->cmd_iot, 328 wdr->cmd_iohs[wd_status], 0); 329 } 330 if (chp->ch_drive[0].drive_type == ATA_DRIVET_ATA) { 331 if (wdc->select) 332 wdc->select(chp,0); 333 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 334 0, WDSD_IBM); 335 delay(10); /* 400ns delay */ 336 st0 = bus_space_read_1(wdr->cmd_iot, 337 wdr->cmd_iohs[wd_status], 0); 338 } 339 340 341 if ((chp->ch_drive[0].drive_type != ATA_DRIVET_ATA || 342 (st0 & WDCS_DRDY)) && 343 (chp->ch_ndrives < 2 || 344 chp->ch_drive[1].drive_type != ATA_DRIVET_ATA || 345 (st1 & WDCS_DRDY))) 346 break; 347 #ifdef WDC_NO_IDS 348 /* cannot kpause here (can't enable IPL_BIO interrupts), 349 * delay instead 350 */ 351 delay(1000000 / hz); 352 #else 353 ata_delay(chp, 1, "atadrdy", AT_WAIT); 354 #endif 355 } 356 if ((st0 & WDCS_DRDY) == 0 && 357 chp->ch_drive[0].drive_type != ATA_DRIVET_ATAPI) 358 chp->ch_drive[0].drive_type = ATA_DRIVET_NONE; 359 if (chp->ch_ndrives > 1 && (st1 & WDCS_DRDY) == 0 && 360 chp->ch_drive[1].drive_type != ATA_DRIVET_ATAPI) 361 chp->ch_drive[1].drive_type = ATA_DRIVET_NONE; 362 ata_channel_unlock(chp); 363 364 ATADEBUG_PRINT(("%s:%d: wait DRDY st0 0x%x st1 0x%x\n", 365 device_xname(atac->atac_dev), 366 chp->ch_channel, st0, st1), DEBUG_PROBE); 367 368 /* Wait a bit, some devices are weird just after a reset. */ 369 delay(5000); 370 371 for (i = 0; i < chp->ch_ndrives; i++) { 372 #if NATA_DMA 373 /* 374 * Init error counter so that an error within the first xfers 375 * will trigger a downgrade 376 */ 377 chp->ch_drive[i].n_dmaerrs = NERRS_MAX - 1; 378 #endif 379 380 /* If controller can't do 16bit flag the drives as 32bit */ 381 if ((atac->atac_cap & 382 (ATAC_CAP_DATA16 | ATAC_CAP_DATA32)) == ATAC_CAP_DATA32) { 383 ata_channel_lock(chp); 384 chp->ch_drive[i].drive_flags |= ATA_DRIVE_CAP32; 385 ata_channel_unlock(chp); 386 } 387 if (chp->ch_drive[i].drive_type == ATA_DRIVET_NONE) 388 continue; 389 390 /* Shortcut in case we've been shutdown */ 391 if (chp->ch_flags & ATACH_SHUTDOWN) 392 return; 393 394 /* 395 * Issue an identify, to try to detect ghosts. 396 * Note that we can't use interrupts here, because if there 397 * is no devices, we will get a command aborted without 398 * interrupts. 399 */ 400 error = ata_get_params(&chp->ch_drive[i], 401 AT_WAIT | AT_POLL, ¶ms); 402 if (error != CMD_OK) { 403 ata_channel_lock(chp); 404 ata_delay(chp, 1000, "atacnf", AT_WAIT); 405 ata_channel_unlock(chp); 406 407 /* Shortcut in case we've been shutdown */ 408 if (chp->ch_flags & ATACH_SHUTDOWN) 409 return; 410 411 error = ata_get_params(&chp->ch_drive[i], 412 AT_WAIT | AT_POLL, ¶ms); 413 } 414 if (error != CMD_OK) { 415 ATADEBUG_PRINT(("%s:%d:%d: IDENTIFY failed (%d)\n", 416 device_xname(atac->atac_dev), 417 chp->ch_channel, i, error), DEBUG_PROBE); 418 ata_channel_lock(chp); 419 if (chp->ch_drive[i].drive_type != ATA_DRIVET_ATA || 420 (wdc->cap & WDC_CAPABILITY_PREATA) == 0) { 421 chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; 422 ata_channel_unlock(chp); 423 continue; 424 } 425 /* 426 * Pre-ATA drive ? 427 * Test registers writability (Error register not 428 * writable, but cyllo is), then try an ATA command. 429 */ 430 if (wdc->select) 431 wdc->select(chp,i); 432 bus_space_write_1(wdr->cmd_iot, 433 wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM | (i << 4)); 434 delay(10); /* 400ns delay */ 435 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 436 0, 0x58); 437 bus_space_write_1(wdr->cmd_iot, 438 wdr->cmd_iohs[wd_cyl_lo], 0, 0xa5); 439 if (bus_space_read_1(wdr->cmd_iot, 440 wdr->cmd_iohs[wd_error], 0) == 0x58 || 441 bus_space_read_1(wdr->cmd_iot, 442 wdr->cmd_iohs[wd_cyl_lo], 0) != 0xa5) { 443 ATADEBUG_PRINT(("%s:%d:%d: register " 444 "writability failed\n", 445 device_xname(atac->atac_dev), 446 chp->ch_channel, i), DEBUG_PROBE); 447 chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; 448 ata_channel_unlock(chp); 449 continue; 450 } 451 if (wdc_wait_for_ready(chp, 10000, 0, &tfd) == 452 WDCWAIT_TOUT) { 453 ATADEBUG_PRINT(("%s:%d:%d: not ready\n", 454 device_xname(atac->atac_dev), 455 chp->ch_channel, i), DEBUG_PROBE); 456 chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; 457 ata_channel_unlock(chp); 458 continue; 459 } 460 bus_space_write_1(wdr->cmd_iot, 461 wdr->cmd_iohs[wd_command], 0, WDCC_RECAL); 462 delay(10); /* 400ns delay */ 463 if (wdc_wait_for_ready(chp, 10000, 0, &tfd) == 464 WDCWAIT_TOUT) { 465 ATADEBUG_PRINT(("%s:%d:%d: WDCC_RECAL failed\n", 466 device_xname(atac->atac_dev), 467 chp->ch_channel, i), DEBUG_PROBE); 468 chp->ch_drive[i].drive_type = ATA_DRIVET_NONE; 469 ata_channel_unlock(chp); 470 } else { 471 for (j = 0; j < chp->ch_ndrives; j++) { 472 if (chp->ch_drive[i].drive_type != 473 ATA_DRIVET_NONE) { 474 chp->ch_drive[j].drive_type = 475 ATA_DRIVET_OLD; 476 } 477 } 478 ata_channel_unlock(chp); 479 } 480 } 481 } 482 } 483 484 int 485 wdcprobe(struct wdc_regs *wdr) 486 { 487 488 return wdcprobe_with_reset(wdr, NULL); 489 } 490 491 int 492 wdcprobe_with_reset(struct wdc_regs *wdr, 493 void (*do_reset)(struct ata_channel *, int)) 494 { 495 struct wdc_softc *wdc; 496 struct ata_channel *ch; 497 int rv; 498 499 wdc = kmem_zalloc(sizeof(*wdc), KM_SLEEP); 500 ch = kmem_zalloc(sizeof(*ch), KM_SLEEP); 501 502 ata_channel_init(ch); 503 ch->ch_atac = &wdc->sc_atac; 504 wdc->regs = wdr; 505 506 /* check the MD reset method */ 507 wdc->reset = (do_reset != NULL) ? do_reset : wdc_do_reset; 508 509 ata_channel_lock(ch); 510 rv = wdcprobe1(ch, 1); 511 ata_channel_unlock(ch); 512 513 ata_channel_destroy(ch); 514 515 kmem_free(ch, sizeof(*ch)); 516 kmem_free(wdc, sizeof(*wdc)); 517 518 return rv; 519 } 520 521 static int 522 wdcprobe1(struct ata_channel *chp, int poll) 523 { 524 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 525 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 526 u_int8_t st0 = 0, st1 = 0, sc __unused, sn __unused, cl, ch; 527 u_int8_t ret_value = 0x03; 528 u_int8_t drive; 529 /* XXX if poll, wdc_probe_count is 0. */ 530 int wdc_probe_count = 531 poll ? (WDC_PROBE_WAIT / WDCDELAY) 532 : (WDC_PROBE_WAIT * hz); 533 534 /* 535 * Sanity check to see if the wdc channel responds at all. 536 */ 537 538 if ((wdc->cap & WDC_CAPABILITY_NO_EXTRA_RESETS) == 0) { 539 while (wdc_probe_count-- > 0) { 540 if (wdc->select) 541 wdc->select(chp,0); 542 543 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 544 0, WDSD_IBM); 545 delay(10); /* 400ns delay */ 546 st0 = bus_space_read_1(wdr->cmd_iot, 547 wdr->cmd_iohs[wd_status], 0); 548 549 if (wdc->select) 550 wdc->select(chp,1); 551 552 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 553 0, WDSD_IBM | 0x10); 554 delay(10); /* 400ns delay */ 555 st1 = bus_space_read_1(wdr->cmd_iot, 556 wdr->cmd_iohs[wd_status], 0); 557 if ((st0 & WDCS_BSY) == 0) 558 break; 559 } 560 561 ATADEBUG_PRINT(("%s:%d: before reset, st0=0x%x, st1=0x%x\n", 562 __func__, chp->ch_channel, st0, st1), DEBUG_PROBE); 563 564 if (st0 == 0xff || st0 == WDSD_IBM) 565 ret_value &= ~0x01; 566 if (st1 == 0xff || st1 == (WDSD_IBM | 0x10)) 567 ret_value &= ~0x02; 568 /* Register writability test, drive 0. */ 569 if (ret_value & 0x01) { 570 if (wdc->select) 571 wdc->select(chp,0); 572 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 573 0, WDSD_IBM); 574 bus_space_write_1(wdr->cmd_iot, 575 wdr->cmd_iohs[wd_cyl_lo], 0, 0x02); 576 cl = bus_space_read_1(wdr->cmd_iot, 577 wdr->cmd_iohs[wd_cyl_lo], 0); 578 if (cl != 0x02) { 579 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 580 "got 0x%x != 0x02\n", 581 __func__, chp->ch_channel, cl), 582 DEBUG_PROBE); 583 ret_value &= ~0x01; 584 } 585 bus_space_write_1(wdr->cmd_iot, 586 wdr->cmd_iohs[wd_cyl_lo], 0, 0x01); 587 cl = bus_space_read_1(wdr->cmd_iot, 588 wdr->cmd_iohs[wd_cyl_lo], 0); 589 if (cl != 0x01) { 590 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo: " 591 "got 0x%x != 0x01\n", 592 __func__, chp->ch_channel, cl), 593 DEBUG_PROBE); 594 ret_value &= ~0x01; 595 } 596 bus_space_write_1(wdr->cmd_iot, 597 wdr->cmd_iohs[wd_sector], 0, 0x01); 598 cl = bus_space_read_1(wdr->cmd_iot, 599 wdr->cmd_iohs[wd_sector], 0); 600 if (cl != 0x01) { 601 ATADEBUG_PRINT(("%s:%d drive 0 wd_sector: " 602 "got 0x%x != 0x01\n", 603 __func__, chp->ch_channel, cl), 604 DEBUG_PROBE); 605 ret_value &= ~0x01; 606 } 607 bus_space_write_1(wdr->cmd_iot, 608 wdr->cmd_iohs[wd_sector], 0, 0x02); 609 cl = bus_space_read_1(wdr->cmd_iot, 610 wdr->cmd_iohs[wd_sector], 0); 611 if (cl != 0x02) { 612 ATADEBUG_PRINT(("%s:%d drive 0 wd_sector: " 613 "got 0x%x != 0x02\n", 614 __func__, chp->ch_channel, cl), 615 DEBUG_PROBE); 616 ret_value &= ~0x01; 617 } 618 cl = bus_space_read_1(wdr->cmd_iot, 619 wdr->cmd_iohs[wd_cyl_lo], 0); 620 if (cl != 0x01) { 621 ATADEBUG_PRINT(("%s:%d drive 0 wd_cyl_lo(2): " 622 "got 0x%x != 0x01\n", 623 __func__, chp->ch_channel, cl), 624 DEBUG_PROBE); 625 ret_value &= ~0x01; 626 } 627 } 628 /* Register writability test, drive 1. */ 629 if (ret_value & 0x02) { 630 if (wdc->select) 631 wdc->select(chp,1); 632 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 633 0, WDSD_IBM | 0x10); 634 bus_space_write_1(wdr->cmd_iot, 635 wdr->cmd_iohs[wd_cyl_lo], 0, 0x02); 636 cl = bus_space_read_1(wdr->cmd_iot, 637 wdr->cmd_iohs[wd_cyl_lo], 0); 638 if (cl != 0x02) { 639 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 640 "got 0x%x != 0x02\n", 641 __func__, chp->ch_channel, cl), 642 DEBUG_PROBE); 643 ret_value &= ~0x02; 644 } 645 bus_space_write_1(wdr->cmd_iot, 646 wdr->cmd_iohs[wd_cyl_lo], 0, 0x01); 647 cl = bus_space_read_1(wdr->cmd_iot, 648 wdr->cmd_iohs[wd_cyl_lo], 0); 649 if (cl != 0x01) { 650 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo: " 651 "got 0x%x != 0x01\n", 652 __func__, chp->ch_channel, cl), 653 DEBUG_PROBE); 654 ret_value &= ~0x02; 655 } 656 bus_space_write_1(wdr->cmd_iot, 657 wdr->cmd_iohs[wd_sector], 0, 0x01); 658 cl = bus_space_read_1(wdr->cmd_iot, 659 wdr->cmd_iohs[wd_sector], 0); 660 if (cl != 0x01) { 661 ATADEBUG_PRINT(("%s:%d drive 1 wd_sector: " 662 "got 0x%x != 0x01\n", 663 __func__, chp->ch_channel, cl), 664 DEBUG_PROBE); 665 ret_value &= ~0x02; 666 } 667 bus_space_write_1(wdr->cmd_iot, 668 wdr->cmd_iohs[wd_sector], 0, 0x02); 669 cl = bus_space_read_1(wdr->cmd_iot, 670 wdr->cmd_iohs[wd_sector], 0); 671 if (cl != 0x02) { 672 ATADEBUG_PRINT(("%s:%d drive 1 wd_sector: " 673 "got 0x%x != 0x02\n", 674 __func__, chp->ch_channel, cl), 675 DEBUG_PROBE); 676 ret_value &= ~0x02; 677 } 678 cl = bus_space_read_1(wdr->cmd_iot, 679 wdr->cmd_iohs[wd_cyl_lo], 0); 680 if (cl != 0x01) { 681 ATADEBUG_PRINT(("%s:%d drive 1 wd_cyl_lo(2): " 682 "got 0x%x != 0x01\n", 683 __func__, chp->ch_channel, cl), 684 DEBUG_PROBE); 685 ret_value &= ~0x02; 686 } 687 } 688 689 if (ret_value == 0) { 690 return 0; 691 } 692 } 693 694 #if 0 /* XXX this break some ATA or ATAPI devices */ 695 /* 696 * reset bus. Also send an ATAPI_RESET to devices, in case there are 697 * ATAPI device out there which don't react to the bus reset 698 */ 699 if (ret_value & 0x01) { 700 if (wdc->select) 701 wdc->select(chp,0); 702 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 703 0, WDSD_IBM); 704 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_command], 0, 705 ATAPI_SOFT_RESET); 706 } 707 if (ret_value & 0x02) { 708 if (wdc->select) 709 wdc->select(chp,0); 710 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 711 0, WDSD_IBM | 0x10); 712 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_command], 0, 713 ATAPI_SOFT_RESET); 714 } 715 716 delay(5000); 717 #endif 718 719 wdc->reset(chp, RESET_POLL); 720 DELAY(2000); 721 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0); 722 723 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) 724 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 725 WDCTL_4BIT); 726 727 #ifdef WDC_NO_IDS 728 ret_value = __wdcwait_reset(chp, ret_value, RESET_POLL); 729 #else 730 ret_value = __wdcwait_reset(chp, ret_value, poll); 731 #endif 732 ATADEBUG_PRINT(("%s:%d: after reset, ret_value=%#x\n", 733 __func__, chp->ch_channel, ret_value), DEBUG_PROBE); 734 735 /* if reset failed, there's nothing here */ 736 if (ret_value == 0) { 737 return 0; 738 } 739 740 /* 741 * Test presence of drives. First test register signatures looking 742 * for ATAPI devices. If it's not an ATAPI and reset said there may 743 * be something here assume it's ATA or OLD. Ghost will be killed 744 * later in attach routine. 745 */ 746 for (drive = 0; drive < wdc->wdc_maxdrives; drive++) { 747 if ((ret_value & (0x01 << drive)) == 0) 748 continue; 749 if (wdc->select) 750 wdc->select(chp,drive); 751 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 752 WDSD_IBM | (drive << 4)); 753 delay(10); /* 400ns delay */ 754 /* Save registers contents */ 755 sc = bus_space_read_1(wdr->cmd_iot, 756 wdr->cmd_iohs[wd_seccnt], 0); 757 sn = bus_space_read_1(wdr->cmd_iot, 758 wdr->cmd_iohs[wd_sector], 0); 759 cl = bus_space_read_1(wdr->cmd_iot, 760 wdr->cmd_iohs[wd_cyl_lo], 0); 761 ch = bus_space_read_1(wdr->cmd_iot, 762 wdr->cmd_iohs[wd_cyl_hi], 0); 763 764 ATADEBUG_PRINT(("%s:%d:%d: after reset, sc=0x%x sn=0x%x " 765 "cl=0x%x ch=0x%x\n", __func__, chp->ch_channel, drive, sc, 766 sn, cl, ch), DEBUG_PROBE); 767 /* 768 * sc & sn are supposed to be 0x1 for ATAPI but in some cases 769 * we get wrong values here, so ignore it. 770 */ 771 if (chp->ch_drive != NULL) { 772 if (cl == 0x14 && ch == 0xeb) { 773 chp->ch_drive[drive].drive_type = ATA_DRIVET_ATAPI; 774 } else { 775 chp->ch_drive[drive].drive_type = ATA_DRIVET_ATA; 776 } 777 } 778 } 779 /* 780 * Select an existing drive before lowering spl, some WDC_NO_IDS 781 * devices incorrectly assert IRQ on nonexistent slave 782 */ 783 if (ret_value & 0x01) { 784 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 785 WDSD_IBM); 786 (void)bus_space_read_1(wdr->cmd_iot, 787 wdr->cmd_iohs[wd_status], 0); 788 } 789 return (ret_value); 790 } 791 792 void 793 wdcattach(struct ata_channel *chp) 794 { 795 struct atac_softc *atac = chp->ch_atac; 796 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 797 798 KASSERT(wdc->wdc_maxdrives > 0 && wdc->wdc_maxdrives <= WDC_MAXDRIVES); 799 800 /* default data transfer methods */ 801 if (wdc->datain_pio == NULL) 802 wdc->datain_pio = wdc_datain_pio; 803 if (wdc->dataout_pio == NULL) 804 wdc->dataout_pio = wdc_dataout_pio; 805 /* default reset method */ 806 if (wdc->reset == NULL) 807 wdc->reset = wdc_do_reset; 808 809 /* initialise global data */ 810 if (atac->atac_bustype_ata == NULL) 811 atac->atac_bustype_ata = &wdc_ata_bustype; 812 if (atac->atac_probe == NULL) 813 atac->atac_probe = wdc_drvprobe; 814 #if NATAPIBUS > 0 815 if (atac->atac_atapibus_attach == NULL) 816 atac->atac_atapibus_attach = wdc_atapibus_attach; 817 #endif 818 819 ata_channel_attach(chp); 820 } 821 822 void 823 wdc_childdetached(device_t self, device_t child) 824 { 825 struct atac_softc *atac = device_private(self); 826 struct ata_channel *chp; 827 int i; 828 829 for (i = 0; i < atac->atac_nchannels; i++) { 830 chp = atac->atac_channels[i]; 831 if (child == chp->atabus) { 832 chp->atabus = NULL; 833 return; 834 } 835 } 836 } 837 838 int 839 wdcdetach(device_t self, int flags) 840 { 841 struct atac_softc *atac = device_private(self); 842 struct ata_channel *chp; 843 struct scsipi_adapter *adapt = &atac->atac_atapi_adapter._generic; 844 int i, error = 0; 845 846 for (i = 0; i < atac->atac_nchannels; i++) { 847 chp = atac->atac_channels[i]; 848 if (chp->atabus == NULL) 849 continue; 850 ATADEBUG_PRINT(("wdcdetach: %s: detaching %s\n", 851 device_xname(atac->atac_dev), device_xname(chp->atabus)), 852 DEBUG_DETACH); 853 if ((error = config_detach(chp->atabus, flags)) != 0) 854 return error; 855 ata_channel_detach(chp); 856 } 857 if (adapt->adapt_refcnt != 0) 858 return EBUSY; 859 return 0; 860 } 861 862 /* restart an interrupted I/O */ 863 void 864 wdcrestart(void *v) 865 { 866 struct ata_channel *chp = v; 867 int s; 868 869 s = splbio(); 870 atastart(chp); 871 splx(s); 872 } 873 874 875 /* 876 * Interrupt routine for the controller. Acknowledge the interrupt, check for 877 * errors on the current operation, mark it done if necessary, and start the 878 * next request. Also check for a partially done transfer, and continue with 879 * the next chunk if so. 880 */ 881 int 882 wdcintr(void *arg) 883 { 884 struct ata_channel *chp = arg; 885 struct atac_softc *atac = chp->ch_atac; 886 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 887 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 888 struct ata_xfer *xfer; 889 int ret; 890 891 if (!device_is_active(atac->atac_dev)) { 892 ATADEBUG_PRINT(("wdcintr: deactivated controller\n"), 893 DEBUG_INTR); 894 return (0); 895 } 896 897 if ((chp->ch_flags & ATACH_IRQ_WAIT) == 0) 898 goto ignore; 899 900 xfer = ata_queue_get_active_xfer(chp); 901 if (xfer == NULL) { 902 ATADEBUG_PRINT(("wdcintr: inactive controller\n"), DEBUG_INTR); 903 ignore: 904 /* try to clear the pending interrupt anyway */ 905 (void)bus_space_read_1(wdr->cmd_iot, 906 wdr->cmd_iohs[wd_status], 0); 907 return (0); 908 } 909 910 /* 911 * On some controllers (e.g. some PCI-IDE) setting the WDCTL_IDS bit 912 * actually has no effect, and interrupt is triggered regardless. 913 * Ignore polled commands here, they are processed separately. 914 */ 915 if (ISSET(xfer->c_flags, C_POLL)) { 916 ATADEBUG_PRINT(("%s: polled xfer ignored\n", __func__), 917 DEBUG_INTR); 918 goto ignore; 919 } 920 921 ATADEBUG_PRINT(("wdcintr\n"), DEBUG_INTR); 922 KASSERT(xfer != NULL); 923 924 #if NATA_DMA || NATA_PIOBM 925 if (chp->ch_flags & ATACH_DMA_WAIT) { 926 wdc->dma_status = 927 (*wdc->dma_finish)(wdc->dma_arg, chp->ch_channel, 928 xfer->c_drive, WDC_DMAEND_END); 929 if (wdc->dma_status & WDC_DMAST_NOIRQ) { 930 /* IRQ not for us, not detected by DMA engine */ 931 return 0; 932 } 933 chp->ch_flags &= ~ATACH_DMA_WAIT; 934 } 935 #endif 936 chp->ch_flags &= ~ATACH_IRQ_WAIT; 937 KASSERT(xfer->ops != NULL && xfer->ops->c_intr != NULL); 938 ret = xfer->ops->c_intr(chp, xfer, 1); 939 if (ret == 0) /* irq was not for us, still waiting for irq */ 940 chp->ch_flags |= ATACH_IRQ_WAIT; 941 return (ret); 942 } 943 944 /* Put all disk in RESET state */ 945 void 946 wdc_reset_drive(struct ata_drive_datas *drvp, int flags, uint32_t *sigp) 947 { 948 struct ata_channel *chp = drvp->chnl_softc; 949 950 ata_channel_lock_owned(chp); 951 952 KASSERT(sigp == NULL); 953 954 ATADEBUG_PRINT(("wdc_reset_drive %s:%d for drive %d\n", 955 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 956 drvp->drive), DEBUG_FUNCS); 957 958 ata_thread_run(chp, flags, ATACH_TH_RESET, ATACH_NODRIVE); 959 } 960 961 void 962 wdc_reset_channel(struct ata_channel *chp, int flags) 963 { 964 struct ata_xfer *xfer; 965 966 ata_channel_lock_owned(chp); 967 968 #if NATA_DMA || NATA_PIOBM 969 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 970 #endif 971 972 chp->ch_flags &= ~ATACH_IRQ_WAIT; 973 974 /* 975 * if the current command is on an ATAPI device, issue a 976 * ATAPI_SOFT_RESET 977 */ 978 xfer = ata_queue_get_active_xfer_locked(chp); 979 980 if (xfer && xfer->c_chp == chp && (xfer->c_flags & C_ATAPI)) { 981 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 982 ata_delay(chp, 1000, "atardl", flags); 983 } 984 985 /* reset the channel */ 986 if (flags & AT_WAIT) 987 (void) wdcreset(chp, RESET_SLEEP); 988 else 989 (void) wdcreset(chp, RESET_POLL); 990 991 /* 992 * wait a bit after reset; in case the DMA engines needs some time 993 * to recover. 994 */ 995 ata_delay(chp, 1000, "atardl", flags); 996 997 /* 998 * Look for pending xfers. If we have a shared queue, we'll also reset 999 * the other channel if the current xfer is running on it. 1000 * Then we'll kill the eventual active transfer explicitly, so that 1001 * it is queued for retry immediately without waiting for I/O timeout. 1002 */ 1003 if (xfer) { 1004 if (xfer->c_chp != chp) { 1005 ata_thread_run(xfer->c_chp, flags, ATACH_TH_RESET, 1006 ATACH_NODRIVE); 1007 } else { 1008 #if NATA_DMA || NATA_PIOBM 1009 /* 1010 * If we're waiting for DMA, stop the 1011 * DMA engine 1012 */ 1013 if (chp->ch_flags & ATACH_DMA_WAIT) { 1014 (*wdc->dma_finish)(wdc->dma_arg, 1015 chp->ch_channel, xfer->c_drive, 1016 WDC_DMAEND_ABRT_QUIET); 1017 chp->ch_flags &= ~ATACH_DMA_WAIT; 1018 } 1019 #endif 1020 } 1021 } 1022 1023 ata_kill_active(chp, KILL_RESET, flags); 1024 } 1025 1026 static int 1027 wdcreset(struct ata_channel *chp, int poll) 1028 { 1029 struct atac_softc *atac = chp->ch_atac; 1030 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1031 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1032 int drv_mask1, drv_mask2; 1033 1034 ata_channel_lock_owned(chp); 1035 1036 #ifdef WDC_NO_IDS 1037 poll = RESET_POLL; 1038 #endif 1039 wdc->reset(chp, poll); 1040 1041 drv_mask1 = (chp->ch_drive[0].drive_type != ATA_DRIVET_NONE) 1042 ? 0x01 : 0x00; 1043 if (chp->ch_ndrives > 1) 1044 drv_mask1 |= (chp->ch_drive[1].drive_type != ATA_DRIVET_NONE) 1045 ? 0x02 : 0x00; 1046 drv_mask2 = __wdcwait_reset(chp, drv_mask1, 1047 (poll == RESET_SLEEP) ? 0 : 1); 1048 if (drv_mask2 != drv_mask1) { 1049 aprint_error("%s channel %d: reset failed for", 1050 device_xname(atac->atac_dev), chp->ch_channel); 1051 if ((drv_mask1 & 0x01) != 0 && (drv_mask2 & 0x01) == 0) 1052 aprint_normal(" drive 0"); 1053 if ((drv_mask1 & 0x02) != 0 && (drv_mask2 & 0x02) == 0) 1054 aprint_normal(" drive 1"); 1055 aprint_normal("\n"); 1056 } 1057 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) 1058 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 1059 WDCTL_4BIT); 1060 1061 return (drv_mask1 != drv_mask2) ? 1 : 0; 1062 } 1063 1064 void 1065 wdc_do_reset(struct ata_channel *chp, int poll) 1066 { 1067 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1068 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1069 int s = 0; 1070 1071 if (poll != RESET_SLEEP) 1072 s = splbio(); 1073 if (wdc->select) 1074 wdc->select(chp,0); 1075 /* master */ 1076 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, WDSD_IBM); 1077 delay(10); /* 400ns delay */ 1078 /* assert SRST, wait for reset to complete */ 1079 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) { 1080 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 1081 WDCTL_RST | WDCTL_IDS | WDCTL_4BIT); 1082 delay(2000); 1083 } 1084 (void) bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_error], 0); 1085 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) 1086 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 1087 WDCTL_4BIT | WDCTL_IDS); 1088 delay(10); /* 400ns delay */ 1089 if (poll != RESET_SLEEP) { 1090 /* ACK interrupt in case there is one pending left */ 1091 if (wdc->irqack) 1092 wdc->irqack(chp); 1093 splx(s); 1094 } 1095 } 1096 1097 static int 1098 __wdcwait_reset(struct ata_channel *chp, int drv_mask, int poll) 1099 { 1100 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1101 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1102 int timeout, nloop; 1103 int wflags = poll ? AT_POLL : AT_WAIT; 1104 u_int8_t st0 = 0, st1 = 0; 1105 #ifdef ATADEBUG 1106 u_int8_t sc0 = 0, sn0 = 0, cl0 = 0, ch0 = 0; 1107 u_int8_t sc1 = 0, sn1 = 0, cl1 = 0, ch1 = 0; 1108 #endif 1109 if (poll) 1110 nloop = WDCNDELAY_RST; 1111 else 1112 nloop = WDC_RESET_WAIT * hz / 1000; 1113 /* wait for BSY to deassert */ 1114 for (timeout = 0; timeout < nloop; timeout++) { 1115 if ((drv_mask & 0x01) != 0) { 1116 if (wdc->select) 1117 wdc->select(chp,0); 1118 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 1119 0, WDSD_IBM); /* master */ 1120 delay(10); 1121 st0 = bus_space_read_1(wdr->cmd_iot, 1122 wdr->cmd_iohs[wd_status], 0); 1123 #ifdef ATADEBUG 1124 sc0 = bus_space_read_1(wdr->cmd_iot, 1125 wdr->cmd_iohs[wd_seccnt], 0); 1126 sn0 = bus_space_read_1(wdr->cmd_iot, 1127 wdr->cmd_iohs[wd_sector], 0); 1128 cl0 = bus_space_read_1(wdr->cmd_iot, 1129 wdr->cmd_iohs[wd_cyl_lo], 0); 1130 ch0 = bus_space_read_1(wdr->cmd_iot, 1131 wdr->cmd_iohs[wd_cyl_hi], 0); 1132 #endif 1133 } 1134 if ((drv_mask & 0x02) != 0) { 1135 if (wdc->select) 1136 wdc->select(chp,1); 1137 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 1138 0, WDSD_IBM | 0x10); /* slave */ 1139 delay(10); 1140 st1 = bus_space_read_1(wdr->cmd_iot, 1141 wdr->cmd_iohs[wd_status], 0); 1142 #ifdef ATADEBUG 1143 sc1 = bus_space_read_1(wdr->cmd_iot, 1144 wdr->cmd_iohs[wd_seccnt], 0); 1145 sn1 = bus_space_read_1(wdr->cmd_iot, 1146 wdr->cmd_iohs[wd_sector], 0); 1147 cl1 = bus_space_read_1(wdr->cmd_iot, 1148 wdr->cmd_iohs[wd_cyl_lo], 0); 1149 ch1 = bus_space_read_1(wdr->cmd_iot, 1150 wdr->cmd_iohs[wd_cyl_hi], 0); 1151 #endif 1152 } 1153 1154 if ((drv_mask & 0x01) == 0) { 1155 /* no master */ 1156 if ((drv_mask & 0x02) != 0 && (st1 & WDCS_BSY) == 0) { 1157 /* No master, slave is ready, it's done */ 1158 goto end; 1159 } 1160 if ((drv_mask & 0x02) == 0) { 1161 /* No master, no slave: it's done */ 1162 goto end; 1163 } 1164 } else if ((drv_mask & 0x02) == 0) { 1165 /* no slave */ 1166 if ((drv_mask & 0x01) != 0 && (st0 & WDCS_BSY) == 0) { 1167 /* No slave, master is ready, it's done */ 1168 goto end; 1169 } 1170 } else { 1171 /* Wait for both master and slave to be ready */ 1172 if ((st0 & WDCS_BSY) == 0 && (st1 & WDCS_BSY) == 0) { 1173 goto end; 1174 } 1175 } 1176 ata_delay(chp, WDCDELAY, "atarst", wflags); 1177 } 1178 /* Reset timed out. Maybe it's because drv_mask was not right */ 1179 if (st0 & WDCS_BSY) 1180 drv_mask &= ~0x01; 1181 if (st1 & WDCS_BSY) 1182 drv_mask &= ~0x02; 1183 end: 1184 ATADEBUG_PRINT(("%s:%d:0: after reset, sc=0x%x sn=0x%x " 1185 "cl=0x%x ch=0x%x\n", 1186 device_xname(chp->ch_atac->atac_dev), 1187 chp->ch_channel, sc0, sn0, cl0, ch0), DEBUG_PROBE); 1188 ATADEBUG_PRINT(("%s:%d:1: after reset, sc=0x%x sn=0x%x " 1189 "cl=0x%x ch=0x%x\n", 1190 device_xname(chp->ch_atac->atac_dev), 1191 chp->ch_channel, sc1, sn1, cl1, ch1), DEBUG_PROBE); 1192 1193 ATADEBUG_PRINT(("%s:%d: wdcwait_reset() end, st0=0x%x st1=0x%x\n", 1194 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 1195 st0, st1), DEBUG_PROBE); 1196 1197 return drv_mask; 1198 } 1199 1200 /* 1201 * Wait for a drive to be !BSY, and have mask in its status register. 1202 * return -1 for a timeout after "timeout" ms. 1203 */ 1204 static int 1205 __wdcwait(struct ata_channel *chp, int mask, int bits, int timeout, int *tfd) 1206 { 1207 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1208 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1209 u_char status, error = 0; 1210 int xtime = 0; 1211 int rv; 1212 1213 ATADEBUG_PRINT(("__wdcwait %s:%d\n", 1214 device_xname(chp->ch_atac->atac_dev), 1215 chp->ch_channel), DEBUG_STATUS); 1216 *tfd = 0; 1217 1218 timeout = timeout * 1000 / WDCDELAY; /* delay uses microseconds */ 1219 1220 for (;;) { 1221 status = 1222 bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_status], 0); 1223 if ((status & (WDCS_BSY | mask)) == bits) 1224 break; 1225 if (++xtime > timeout) { 1226 ATADEBUG_PRINT(("__wdcwait: timeout (time=%d), " 1227 "status %x error %x (mask 0x%x bits 0x%x)\n", 1228 xtime, status, 1229 bus_space_read_1(wdr->cmd_iot, 1230 wdr->cmd_iohs[wd_error], 0), mask, bits), 1231 DEBUG_STATUS | DEBUG_PROBE | DEBUG_DELAY); 1232 rv = WDCWAIT_TOUT; 1233 goto out; 1234 } 1235 delay(WDCDELAY); 1236 } 1237 #ifdef ATADEBUG 1238 if (xtime > 0 && (atadebug_mask & DEBUG_DELAY)) 1239 printf("__wdcwait: did busy-wait, time=%d\n", xtime); 1240 #endif 1241 if (status & WDCS_ERR) 1242 error = bus_space_read_1(wdr->cmd_iot, 1243 wdr->cmd_iohs[wd_error], 0); 1244 #ifdef WDCNDELAY_DEBUG 1245 /* After autoconfig, there should be no long delays. */ 1246 if (!cold && xtime > WDCNDELAY_DEBUG) { 1247 struct ata_xfer *xfer; 1248 1249 xfer = ata_queue_get_active_xfer_locked(chp); 1250 if (xfer == NULL) 1251 printf("%s channel %d: warning: busy-wait took %dus\n", 1252 device_xname(chp->ch_atac->atac_dev), 1253 chp->ch_channel, WDCDELAY * xtime); 1254 else 1255 printf("%s:%d:%d: warning: busy-wait took %dus\n", 1256 device_xname(chp->ch_atac->atac_dev), 1257 chp->ch_channel, xfer->c_drive, 1258 WDCDELAY * xtime); 1259 } 1260 #endif 1261 rv = WDCWAIT_OK; 1262 1263 out: 1264 *tfd = ATACH_ERR_ST(error, status); 1265 return rv; 1266 } 1267 1268 /* 1269 * Call __wdcwait(), polling using kpause() or waking up the kernel 1270 * thread if possible 1271 */ 1272 int 1273 wdcwait(struct ata_channel *chp, int mask, int bits, int timeout, int flags, 1274 int *tfd) 1275 { 1276 int error, i, timeout_hz = mstohz(timeout); 1277 1278 ata_channel_lock_owned(chp); 1279 1280 if (timeout_hz == 0 || 1281 (flags & (AT_WAIT | AT_POLL)) == AT_POLL) 1282 error = __wdcwait(chp, mask, bits, timeout, tfd); 1283 else { 1284 error = __wdcwait(chp, mask, bits, WDCDELAY_POLL, tfd); 1285 if (error != 0) { 1286 if (ata_is_thread_run(chp) || (flags & AT_WAIT)) { 1287 /* 1288 * we're running in the channel thread 1289 * or some userland thread context 1290 */ 1291 for (i = 0; i < timeout_hz; i++) { 1292 if (__wdcwait(chp, mask, bits, 1293 WDCDELAY_POLL, tfd) == 0) { 1294 error = 0; 1295 break; 1296 } 1297 kpause("atapoll", true, 1, 1298 &chp->ch_lock); 1299 } 1300 } else { 1301 /* 1302 * we're probably in interrupt context, 1303 * caller must ask the thread to come back here 1304 */ 1305 return(WDCWAIT_THR); 1306 } 1307 } 1308 } 1309 return (error); 1310 } 1311 1312 1313 #if NATA_DMA 1314 /* 1315 * Busy-wait for DMA to complete 1316 */ 1317 int 1318 wdc_dmawait(struct ata_channel *chp, struct ata_xfer *xfer, int timeout) 1319 { 1320 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1321 int xtime; 1322 1323 for (xtime = 0; xtime < timeout * 1000 / WDCDELAY; xtime++) { 1324 wdc->dma_status = 1325 (*wdc->dma_finish)(wdc->dma_arg, 1326 chp->ch_channel, xfer->c_drive, WDC_DMAEND_END); 1327 if ((wdc->dma_status & WDC_DMAST_NOIRQ) == 0) 1328 return 0; 1329 delay(WDCDELAY); 1330 } 1331 /* timeout, force a DMA halt */ 1332 wdc->dma_status = (*wdc->dma_finish)(wdc->dma_arg, 1333 chp->ch_channel, xfer->c_drive, WDC_DMAEND_ABRT); 1334 return 1; 1335 } 1336 #endif 1337 1338 void 1339 wdctimeout(void *arg) 1340 { 1341 struct ata_xfer *xfer; 1342 struct ata_channel *chp = arg; 1343 #if NATA_DMA || NATA_PIOBM 1344 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1345 #endif 1346 int s; 1347 1348 ATADEBUG_PRINT(("wdctimeout\n"), DEBUG_FUNCS); 1349 1350 s = splbio(); 1351 1352 callout_ack(&chp->c_timo_callout); 1353 1354 if ((chp->ch_flags & ATACH_IRQ_WAIT) == 0) { 1355 __wdcerror(chp, "timeout not expected without pending irq"); 1356 goto out; 1357 } 1358 1359 xfer = ata_queue_get_active_xfer(chp); 1360 KASSERT(xfer != NULL); 1361 1362 if (ata_timo_xfer_check(xfer)) { 1363 /* Already logged */ 1364 goto out; 1365 } 1366 1367 __wdcerror(chp, "lost interrupt"); 1368 printf("\ttype: %s tc_bcount: %d tc_skip: %d\n", 1369 (xfer->c_flags & C_ATAPI) ? "atapi" : "ata", 1370 xfer->c_bcount, xfer->c_skip); 1371 #if NATA_DMA || NATA_PIOBM 1372 if (chp->ch_flags & ATACH_DMA_WAIT) { 1373 wdc->dma_status = 1374 (*wdc->dma_finish)(wdc->dma_arg, chp->ch_channel, 1375 xfer->c_drive, WDC_DMAEND_ABRT); 1376 chp->ch_flags &= ~ATACH_DMA_WAIT; 1377 } 1378 #endif 1379 /* 1380 * Call the interrupt routine. If we just missed an interrupt, 1381 * it will do what's needed. Else, it will take the needed 1382 * action (reset the device). 1383 */ 1384 xfer->c_flags |= C_TIMEOU; 1385 chp->ch_flags &= ~ATACH_IRQ_WAIT; 1386 KASSERT(xfer->ops != NULL && xfer->ops->c_intr != NULL); 1387 xfer->ops->c_intr(chp, xfer, 1); 1388 1389 out: 1390 splx(s); 1391 } 1392 1393 static const struct ata_xfer_ops wdc_cmd_xfer_ops = { 1394 .c_start = __wdccommand_start, 1395 .c_poll = __wdccommand_poll, 1396 .c_abort = __wdccommand_done, 1397 .c_intr = __wdccommand_intr, 1398 .c_kill_xfer = __wdccommand_kill_xfer, 1399 }; 1400 1401 void 1402 wdc_exec_command(struct ata_drive_datas *drvp, struct ata_xfer *xfer) 1403 { 1404 struct ata_channel *chp = drvp->chnl_softc; 1405 struct ata_command *ata_c = &xfer->c_ata_c; 1406 1407 ATADEBUG_PRINT(("wdc_exec_command %s:%d:%d\n", 1408 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 1409 drvp->drive), DEBUG_FUNCS); 1410 1411 /* set up an xfer and queue. Wait for completion */ 1412 if (chp->ch_atac->atac_cap & ATAC_CAP_NOIRQ) 1413 ata_c->flags |= AT_POLL; 1414 if (ata_c->flags & AT_POLL) 1415 xfer->c_flags |= C_POLL; 1416 if (ata_c->flags & AT_WAIT) 1417 xfer->c_flags |= C_WAIT; 1418 xfer->c_drive = drvp->drive; 1419 xfer->c_databuf = ata_c->data; 1420 xfer->c_bcount = ata_c->bcount; 1421 xfer->ops = &wdc_cmd_xfer_ops; 1422 1423 ata_exec_xfer(chp, xfer); 1424 } 1425 1426 static int 1427 __wdccommand_start(struct ata_channel *chp, struct ata_xfer *xfer) 1428 { 1429 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1430 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1431 int drive = xfer->c_drive; 1432 int wait_flags = (xfer->c_flags & C_POLL) ? AT_POLL : 0; 1433 struct ata_command *ata_c = &xfer->c_ata_c; 1434 int tfd; 1435 1436 ATADEBUG_PRINT(("__wdccommand_start %s:%d:%d\n", 1437 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 1438 xfer->c_drive), DEBUG_FUNCS); 1439 1440 if (wdc->select) 1441 wdc->select(chp,drive); 1442 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 1443 WDSD_IBM | (drive << 4)); 1444 switch(wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1445 ata_c->r_st_bmask, ata_c->timeout, wait_flags, &tfd)) { 1446 case WDCWAIT_OK: 1447 break; 1448 case WDCWAIT_TOUT: 1449 ata_c->flags |= AT_TIMEOU; 1450 return ATASTART_ABORT; 1451 case WDCWAIT_THR: 1452 return ATASTART_TH; 1453 } 1454 if (ata_c->flags & AT_POLL) { 1455 /* polled command, disable interrupts */ 1456 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) 1457 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, 1458 wd_aux_ctlr, WDCTL_4BIT | WDCTL_IDS); 1459 } 1460 if ((ata_c->flags & AT_LBA48) != 0) { 1461 wdccommandext(chp, drive, ata_c->r_command, 1462 ata_c->r_lba, ata_c->r_count, ata_c->r_features, 1463 ata_c->r_device & ~0x10); 1464 } else { 1465 wdccommand(chp, drive, ata_c->r_command, 1466 (ata_c->r_lba >> 8) & 0xffff, 1467 WDSD_IBM | (drive << 4) | 1468 (((ata_c->flags & AT_LBA) != 0) ? WDSD_LBA : 0) | 1469 ((ata_c->r_lba >> 24) & 0x0f), 1470 ata_c->r_lba & 0xff, 1471 ata_c->r_count & 0xff, 1472 ata_c->r_features & 0xff); 1473 } 1474 1475 if ((ata_c->flags & AT_POLL) == 0) { 1476 chp->ch_flags |= ATACH_IRQ_WAIT; /* wait for interrupt */ 1477 callout_reset(&chp->c_timo_callout, ata_c->timeout / 1000 * hz, 1478 wdctimeout, chp); 1479 return ATASTART_STARTED; 1480 } 1481 1482 /* 1483 * Polled command. Wait for drive ready or drq. Done in intr(). 1484 * Wait for at last 400ns for status bit to be valid. 1485 */ 1486 delay(10); /* 400ns delay */ 1487 return ATASTART_POLL; 1488 } 1489 1490 static int 1491 __wdccommand_poll(struct ata_channel *chp, struct ata_xfer *xfer) 1492 { 1493 __wdccommand_intr(chp, xfer, 0); 1494 return ATAPOLL_DONE; 1495 } 1496 1497 static int 1498 __wdccommand_intr(struct ata_channel *chp, struct ata_xfer *xfer, int irq) 1499 { 1500 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1501 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1502 struct ata_command *ata_c = &xfer->c_ata_c; 1503 int bcount = ata_c->bcount; 1504 char *data = ata_c->data; 1505 int wflags, tfd; 1506 int drive_flags; 1507 1508 if (ata_c->r_command == WDCC_IDENTIFY || 1509 ata_c->r_command == ATAPI_IDENTIFY_DEVICE) { 1510 /* 1511 * The IDENTIFY data has been designed as an array of 1512 * u_int16_t, so we can byteswap it on the fly. 1513 * Historically it's what we have always done so keeping it 1514 * here ensure binary backward compatibility. 1515 */ 1516 drive_flags = ATA_DRIVE_NOSTREAM | 1517 chp->ch_drive[xfer->c_drive].drive_flags; 1518 } else { 1519 /* 1520 * Other data structure are opaque and should be transferred 1521 * as is. 1522 */ 1523 drive_flags = chp->ch_drive[xfer->c_drive].drive_flags; 1524 } 1525 1526 #ifdef WDC_NO_IDS 1527 wflags = AT_POLL; 1528 #else 1529 if ((ata_c->flags & (AT_WAIT | AT_POLL)) == (AT_WAIT | AT_POLL)) { 1530 /* both wait and poll, we can kpause here */ 1531 wflags = AT_WAIT | AT_POLL; 1532 } else { 1533 wflags = AT_POLL; 1534 } 1535 #endif 1536 1537 ata_channel_lock(chp); 1538 1539 again: 1540 ATADEBUG_PRINT(("__wdccommand_intr %s:%d:%d\n", 1541 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, 1542 xfer->c_drive), DEBUG_INTR); 1543 /* 1544 * after a ATAPI_SOFT_RESET, the device will have released the bus. 1545 * Reselect again, it doesn't hurt for others commands, and the time 1546 * penalty for the extra register write is acceptable, 1547 * wdc_exec_command() isn't called often (mostly for autoconfig) 1548 */ 1549 if ((xfer->c_flags & C_ATAPI) != 0) { 1550 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 1551 WDSD_IBM | (xfer->c_drive << 4)); 1552 } 1553 if ((ata_c->flags & AT_XFDONE) != 0) { 1554 /* 1555 * We have completed a data xfer. The drive should now be 1556 * in its initial state 1557 */ 1558 if (wdcwait(chp, ata_c->r_st_bmask | WDCS_DRQ, 1559 ata_c->r_st_bmask, (irq == 0) ? ata_c->timeout : 0, 1560 wflags, &tfd) == WDCWAIT_TOUT) { 1561 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 1562 ata_channel_unlock(chp); 1563 return 0; /* IRQ was not for us */ 1564 } 1565 ata_c->flags |= AT_TIMEOU; 1566 } 1567 goto out; 1568 } 1569 if (wdcwait(chp, ata_c->r_st_pmask, ata_c->r_st_pmask, 1570 (irq == 0) ? ata_c->timeout : 0, wflags, &tfd) == WDCWAIT_TOUT) { 1571 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 1572 ata_channel_unlock(chp); 1573 return 0; /* IRQ was not for us */ 1574 } 1575 ata_c->flags |= AT_TIMEOU; 1576 goto out; 1577 } 1578 if (wdc->irqack) 1579 wdc->irqack(chp); 1580 if (ata_c->flags & AT_READ) { 1581 if ((ATACH_ST(tfd) & WDCS_DRQ) == 0) { 1582 ata_c->flags |= AT_TIMEOU; 1583 goto out; 1584 } 1585 wdc->datain_pio(chp, drive_flags, data, bcount); 1586 /* at this point the drive should be in its initial state */ 1587 ata_c->flags |= AT_XFDONE; 1588 /* 1589 * XXX checking the status register again here cause some 1590 * hardware to timeout. 1591 */ 1592 } else if (ata_c->flags & AT_WRITE) { 1593 if ((ATACH_ST(tfd) & WDCS_DRQ) == 0) { 1594 ata_c->flags |= AT_TIMEOU; 1595 goto out; 1596 } 1597 wdc->dataout_pio(chp, drive_flags, data, bcount); 1598 ata_c->flags |= AT_XFDONE; 1599 if ((ata_c->flags & AT_POLL) == 0) { 1600 chp->ch_flags |= ATACH_IRQ_WAIT; /* wait for interrupt */ 1601 callout_reset(&chp->c_timo_callout, 1602 mstohz(ata_c->timeout), wdctimeout, chp); 1603 ata_channel_unlock(chp); 1604 return 1; 1605 } else { 1606 goto again; 1607 } 1608 } 1609 out: 1610 if (ATACH_ST(tfd) & WDCS_DWF) 1611 ata_c->flags |= AT_DF; 1612 if (ATACH_ST(tfd) & WDCS_ERR) { 1613 ata_c->flags |= AT_ERROR; 1614 ata_c->r_error = ATACH_ST(tfd); 1615 } 1616 1617 ata_channel_unlock(chp); 1618 1619 __wdccommand_done(chp, xfer); 1620 return 1; 1621 } 1622 1623 static void 1624 __wdccommand_done(struct ata_channel *chp, struct ata_xfer *xfer) 1625 { 1626 struct atac_softc *atac = chp->ch_atac; 1627 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1628 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1629 struct ata_command *ata_c = &xfer->c_ata_c; 1630 bool start = true; 1631 1632 ATADEBUG_PRINT(("__wdccommand_done %s:%d:%d flags 0x%x\n", 1633 device_xname(atac->atac_dev), chp->ch_channel, xfer->c_drive, 1634 ata_c->flags), DEBUG_FUNCS); 1635 1636 if (ata_waitdrain_xfer_check(chp, xfer)) { 1637 start = false; 1638 goto out; 1639 } 1640 1641 if ((ata_c->flags & AT_READREG) != 0 && 1642 device_is_active(atac->atac_dev) && 1643 (ata_c->flags & (AT_ERROR | AT_DF)) == 0) { 1644 ata_c->r_status = bus_space_read_1(wdr->cmd_iot, 1645 wdr->cmd_iohs[wd_status], 0); 1646 ata_c->r_error = bus_space_read_1(wdr->cmd_iot, 1647 wdr->cmd_iohs[wd_error], 0); 1648 ata_c->r_count = bus_space_read_1(wdr->cmd_iot, 1649 wdr->cmd_iohs[wd_seccnt], 0); 1650 ata_c->r_lba = (uint64_t)bus_space_read_1(wdr->cmd_iot, 1651 wdr->cmd_iohs[wd_sector], 0) << 0; 1652 ata_c->r_lba |= (uint64_t)bus_space_read_1(wdr->cmd_iot, 1653 wdr->cmd_iohs[wd_cyl_lo], 0) << 8; 1654 ata_c->r_lba |= (uint64_t)bus_space_read_1(wdr->cmd_iot, 1655 wdr->cmd_iohs[wd_cyl_hi], 0) << 16; 1656 ata_c->r_device = bus_space_read_1(wdr->cmd_iot, 1657 wdr->cmd_iohs[wd_sdh], 0); 1658 1659 if ((ata_c->flags & AT_LBA48) != 0) { 1660 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) { 1661 if ((ata_c->flags & AT_POLL) != 0) 1662 bus_space_write_1(wdr->ctl_iot, 1663 wdr->ctl_ioh, wd_aux_ctlr, 1664 WDCTL_HOB|WDCTL_4BIT|WDCTL_IDS); 1665 else 1666 bus_space_write_1(wdr->ctl_iot, 1667 wdr->ctl_ioh, wd_aux_ctlr, 1668 WDCTL_HOB|WDCTL_4BIT); 1669 } 1670 ata_c->r_count |= bus_space_read_1(wdr->cmd_iot, 1671 wdr->cmd_iohs[wd_seccnt], 0) << 8; 1672 ata_c->r_lba |= (uint64_t)bus_space_read_1(wdr->cmd_iot, 1673 wdr->cmd_iohs[wd_sector], 0) << 24; 1674 ata_c->r_lba |= (uint64_t)bus_space_read_1(wdr->cmd_iot, 1675 wdr->cmd_iohs[wd_cyl_lo], 0) << 32; 1676 ata_c->r_lba |= (uint64_t)bus_space_read_1(wdr->cmd_iot, 1677 wdr->cmd_iohs[wd_cyl_hi], 0) << 40; 1678 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) { 1679 if ((ata_c->flags & AT_POLL) != 0) 1680 bus_space_write_1(wdr->ctl_iot, 1681 wdr->ctl_ioh, wd_aux_ctlr, 1682 WDCTL_4BIT|WDCTL_IDS); 1683 else 1684 bus_space_write_1(wdr->ctl_iot, 1685 wdr->ctl_ioh, wd_aux_ctlr, 1686 WDCTL_4BIT); 1687 } 1688 } else { 1689 ata_c->r_lba |= 1690 (uint64_t)(ata_c->r_device & 0x0f) << 24; 1691 } 1692 ata_c->r_device &= 0xf0; 1693 } 1694 1695 __wdccommand_done_end(chp, xfer); 1696 1697 ata_deactivate_xfer(chp, xfer); 1698 1699 out: 1700 if (ata_c->flags & AT_POLL) { 1701 /* enable interrupts */ 1702 if (! (wdc->cap & WDC_CAPABILITY_NO_AUXCTL)) 1703 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, 1704 wd_aux_ctlr, WDCTL_4BIT); 1705 delay(10); /* some drives need a little delay here */ 1706 } 1707 1708 if (start) 1709 atastart(chp); 1710 } 1711 1712 static void 1713 __wdccommand_done_end(struct ata_channel *chp, struct ata_xfer *xfer) 1714 { 1715 struct ata_command *ata_c = &xfer->c_ata_c; 1716 1717 ata_c->flags |= AT_DONE; 1718 } 1719 1720 static void 1721 __wdccommand_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, 1722 int reason) 1723 { 1724 struct ata_command *ata_c = &xfer->c_ata_c; 1725 bool deactivate = true; 1726 1727 switch (reason) { 1728 case KILL_GONE_INACTIVE: 1729 deactivate = false; 1730 /* FALLTHROUGH */ 1731 case KILL_GONE: 1732 ata_c->flags |= AT_GONE; 1733 break; 1734 case KILL_RESET: 1735 ata_c->flags |= AT_RESET; 1736 break; 1737 default: 1738 printf("__wdccommand_kill_xfer: unknown reason %d\n", 1739 reason); 1740 panic("__wdccommand_kill_xfer"); 1741 } 1742 1743 __wdccommand_done_end(chp, xfer); 1744 1745 if (deactivate) 1746 ata_deactivate_xfer(chp, xfer); 1747 } 1748 1749 /* 1750 * Send a command. The drive should be ready. 1751 * Assumes interrupts are blocked. 1752 */ 1753 void 1754 wdccommand(struct ata_channel *chp, u_int8_t drive, u_int8_t command, 1755 u_int16_t cylin, u_int8_t head, u_int8_t sector, u_int8_t count, 1756 u_int8_t features) 1757 { 1758 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1759 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1760 1761 ATADEBUG_PRINT(("wdccommand %s:%d:%d: command=0x%x cylin=%d head=%d " 1762 "sector=%d count=%d features=%d\n", 1763 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, drive, 1764 command, cylin, head, sector, count, features), DEBUG_FUNCS); 1765 1766 if (wdc->select) 1767 wdc->select(chp,drive); 1768 1769 /* Select drive, head, and addressing mode. */ 1770 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 1771 WDSD_IBM | (drive << 4) | head); 1772 /* Load parameters into the wd_features register. */ 1773 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_features], 0, 1774 features); 1775 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_seccnt], 0, count); 1776 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sector], 0, sector); 1777 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_lo], 0, cylin); 1778 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_hi], 1779 0, cylin >> 8); 1780 1781 /* Send command. */ 1782 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_command], 0, command); 1783 return; 1784 } 1785 1786 /* 1787 * Send a 48-bit addressing command. The drive should be ready. 1788 * Assumes interrupts are blocked. 1789 */ 1790 void 1791 wdccommandext(struct ata_channel *chp, u_int8_t drive, u_int8_t command, 1792 u_int64_t blkno, u_int16_t count, u_int16_t features, u_int8_t device) 1793 { 1794 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1795 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1796 1797 ATADEBUG_PRINT(("wdccommandext %s:%d:%d: command=0x%02x " 1798 "blkno=0x%012"PRIx64" count=0x%04x features=0x%04x " 1799 "device=0x%02x\n", device_xname(chp->ch_atac->atac_dev), 1800 chp->ch_channel, drive, command, blkno, count, features, device), 1801 DEBUG_FUNCS); 1802 1803 KASSERT(drive < wdc->wdc_maxdrives); 1804 1805 if (wdc->select) 1806 wdc->select(chp,drive); 1807 1808 /* Select drive, head, and addressing mode. */ 1809 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 1810 (drive << 4) | device); 1811 1812 if (wdc->cap & WDC_CAPABILITY_WIDEREGS) { 1813 bus_space_write_2(wdr->cmd_iot, wdr->cmd_iohs[wd_features], 1814 0, features); 1815 bus_space_write_2(wdr->cmd_iot, wdr->cmd_iohs[wd_seccnt], 1816 0, count); 1817 bus_space_write_2(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_lo], 1818 0, (((blkno >> 16) & 0xff00) | (blkno & 0x00ff))); 1819 bus_space_write_2(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_mi], 1820 0, (((blkno >> 24) & 0xff00) | ((blkno >> 8) & 0x00ff))); 1821 bus_space_write_2(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_hi], 1822 0, (((blkno >> 32) & 0xff00) | ((blkno >> 16) & 0x00ff))); 1823 } else { 1824 /* previous */ 1825 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_features], 1826 0, features >> 8); 1827 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_seccnt], 1828 0, count >> 8); 1829 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_lo], 1830 0, blkno >> 24); 1831 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_mi], 1832 0, blkno >> 32); 1833 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_hi], 1834 0, blkno >> 40); 1835 1836 /* current */ 1837 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_features], 1838 0, features); 1839 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_seccnt], 1840 0, count); 1841 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_lo], 1842 0, blkno); 1843 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_mi], 1844 0, blkno >> 8); 1845 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_lba_hi], 1846 0, blkno >> 16); 1847 } 1848 1849 /* Send command. */ 1850 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_command], 0, command); 1851 return; 1852 } 1853 1854 /* 1855 * Simplified version of wdccommand(). Unbusy/ready/drq must be 1856 * tested by the caller. 1857 */ 1858 void 1859 wdccommandshort(struct ata_channel *chp, int drive, int command) 1860 { 1861 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 1862 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 1863 1864 ATADEBUG_PRINT(("wdccommandshort %s:%d:%d command 0x%x\n", 1865 device_xname(chp->ch_atac->atac_dev), chp->ch_channel, drive, 1866 command), DEBUG_FUNCS); 1867 1868 if (wdc->select) 1869 wdc->select(chp,drive); 1870 1871 /* Select drive. */ 1872 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 1873 WDSD_IBM | (drive << 4)); 1874 1875 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_command], 0, command); 1876 } 1877 1878 static void 1879 __wdcerror(struct ata_channel *chp, const char *msg) 1880 { 1881 struct atac_softc *atac = chp->ch_atac; 1882 struct ata_xfer *xfer = ata_queue_get_active_xfer(chp); 1883 1884 if (xfer == NULL) 1885 aprint_error("%s:%d: %s\n", device_xname(atac->atac_dev), 1886 chp->ch_channel, msg); 1887 else 1888 aprint_error("%s:%d:%d: %s\n", device_xname(atac->atac_dev), 1889 chp->ch_channel, xfer->c_drive, msg); 1890 } 1891 1892 /* 1893 * the bit bucket 1894 */ 1895 void 1896 wdcbit_bucket(struct ata_channel *chp, int size) 1897 { 1898 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 1899 1900 for (; size >= 2; size -= 2) 1901 (void)bus_space_read_2(wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0); 1902 if (size) 1903 (void)bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_data], 0); 1904 } 1905 1906 static void 1907 wdc_datain_pio(struct ata_channel *chp, int flags, void *bf, size_t len) 1908 { 1909 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 1910 1911 #ifndef __NO_STRICT_ALIGNMENT 1912 if ((uintptr_t)bf & 1) 1913 goto unaligned; 1914 if ((flags & ATA_DRIVE_CAP32) && ((uintptr_t)bf & 3)) 1915 goto unaligned; 1916 #endif 1917 1918 if (flags & ATA_DRIVE_NOSTREAM) { 1919 if ((flags & ATA_DRIVE_CAP32) && len > 3) { 1920 bus_space_read_multi_4(wdr->data32iot, 1921 wdr->data32ioh, 0, bf, len >> 2); 1922 bf = (char *)bf + (len & ~3); 1923 len &= 3; 1924 } 1925 if (len > 1) { 1926 bus_space_read_multi_2(wdr->cmd_iot, 1927 wdr->cmd_iohs[wd_data], 0, bf, len >> 1); 1928 bf = (char *)bf + (len & ~1); 1929 len &= 1; 1930 } 1931 } else { 1932 if ((flags & ATA_DRIVE_CAP32) && len > 3) { 1933 bus_space_read_multi_stream_4(wdr->data32iot, 1934 wdr->data32ioh, 0, bf, len >> 2); 1935 bf = (char *)bf + (len & ~3); 1936 len &= 3; 1937 } 1938 if (len > 1) { 1939 bus_space_read_multi_stream_2(wdr->cmd_iot, 1940 wdr->cmd_iohs[wd_data], 0, bf, len >> 1); 1941 bf = (char *)bf + (len & ~1); 1942 len &= 1; 1943 } 1944 } 1945 if (len) 1946 *((uint8_t *)bf) = bus_space_read_1(wdr->cmd_iot, 1947 wdr->cmd_iohs[wd_data], 0); 1948 return; 1949 1950 #ifndef __NO_STRICT_ALIGNMENT 1951 unaligned: 1952 if (flags & ATA_DRIVE_NOSTREAM) { 1953 if (flags & ATA_DRIVE_CAP32) { 1954 while (len > 3) { 1955 uint32_t val; 1956 1957 val = bus_space_read_4(wdr->data32iot, 1958 wdr->data32ioh, 0); 1959 memcpy(bf, &val, 4); 1960 bf = (char *)bf + 4; 1961 len -= 4; 1962 } 1963 } 1964 while (len > 1) { 1965 uint16_t val; 1966 1967 val = bus_space_read_2(wdr->cmd_iot, 1968 wdr->cmd_iohs[wd_data], 0); 1969 memcpy(bf, &val, 2); 1970 bf = (char *)bf + 2; 1971 len -= 2; 1972 } 1973 } else { 1974 if (flags & ATA_DRIVE_CAP32) { 1975 while (len > 3) { 1976 uint32_t val; 1977 1978 val = bus_space_read_stream_4(wdr->data32iot, 1979 wdr->data32ioh, 0); 1980 memcpy(bf, &val, 4); 1981 bf = (char *)bf + 4; 1982 len -= 4; 1983 } 1984 } 1985 while (len > 1) { 1986 uint16_t val; 1987 1988 val = bus_space_read_stream_2(wdr->cmd_iot, 1989 wdr->cmd_iohs[wd_data], 0); 1990 memcpy(bf, &val, 2); 1991 bf = (char *)bf + 2; 1992 len -= 2; 1993 } 1994 } 1995 #endif 1996 } 1997 1998 static void 1999 wdc_dataout_pio(struct ata_channel *chp, int flags, void *bf, size_t len) 2000 { 2001 struct wdc_regs *wdr = CHAN_TO_WDC_REGS(chp); 2002 2003 #ifndef __NO_STRICT_ALIGNMENT 2004 if ((uintptr_t)bf & 1) 2005 goto unaligned; 2006 if ((flags & ATA_DRIVE_CAP32) && ((uintptr_t)bf & 3)) 2007 goto unaligned; 2008 #endif 2009 2010 if (flags & ATA_DRIVE_NOSTREAM) { 2011 if (flags & ATA_DRIVE_CAP32) { 2012 bus_space_write_multi_4(wdr->data32iot, 2013 wdr->data32ioh, 0, bf, len >> 2); 2014 bf = (char *)bf + (len & ~3); 2015 len &= 3; 2016 } 2017 if (len) { 2018 bus_space_write_multi_2(wdr->cmd_iot, 2019 wdr->cmd_iohs[wd_data], 0, bf, len >> 1); 2020 } 2021 } else { 2022 if (flags & ATA_DRIVE_CAP32) { 2023 bus_space_write_multi_stream_4(wdr->data32iot, 2024 wdr->data32ioh, 0, bf, len >> 2); 2025 bf = (char *)bf + (len & ~3); 2026 len &= 3; 2027 } 2028 if (len) { 2029 bus_space_write_multi_stream_2(wdr->cmd_iot, 2030 wdr->cmd_iohs[wd_data], 0, bf, len >> 1); 2031 } 2032 } 2033 return; 2034 2035 #ifndef __NO_STRICT_ALIGNMENT 2036 unaligned: 2037 if (flags & ATA_DRIVE_NOSTREAM) { 2038 if (flags & ATA_DRIVE_CAP32) { 2039 while (len > 3) { 2040 uint32_t val; 2041 2042 memcpy(&val, bf, 4); 2043 bus_space_write_4(wdr->data32iot, 2044 wdr->data32ioh, 0, val); 2045 bf = (char *)bf + 4; 2046 len -= 4; 2047 } 2048 } 2049 while (len > 1) { 2050 uint16_t val; 2051 2052 memcpy(&val, bf, 2); 2053 bus_space_write_2(wdr->cmd_iot, 2054 wdr->cmd_iohs[wd_data], 0, val); 2055 bf = (char *)bf + 2; 2056 len -= 2; 2057 } 2058 } else { 2059 if (flags & ATA_DRIVE_CAP32) { 2060 while (len > 3) { 2061 uint32_t val; 2062 2063 memcpy(&val, bf, 4); 2064 bus_space_write_stream_4(wdr->data32iot, 2065 wdr->data32ioh, 0, val); 2066 bf = (char *)bf + 4; 2067 len -= 4; 2068 } 2069 } 2070 while (len > 1) { 2071 uint16_t val; 2072 2073 memcpy(&val, bf, 2); 2074 bus_space_write_stream_2(wdr->cmd_iot, 2075 wdr->cmd_iohs[wd_data], 0, val); 2076 bf = (char *)bf + 2; 2077 len -= 2; 2078 } 2079 } 2080 #endif 2081 } 2082
Indexes created Sun Sep 21 20:09:37 GMT 2025