ata_wdc.c revision 1.1.2.9
1 /* $NetBSD: ata_wdc.c,v 1.1.2.9 1998/08/21 16:34:46 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Manuel Bouyer. 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 the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 /*- 37 * Copyright (c) 1998 The NetBSD Foundation, Inc. 38 * All rights reserved. 39 * 40 * This code is derived from software contributed to The NetBSD Foundation 41 * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 42 * 43 * Redistribution and use in source and binary forms, with or without 44 * modification, are permitted provided that the following conditions 45 * are met: 46 * 1. Redistributions of source code must retain the above copyright 47 * notice, this list of conditions and the following disclaimer. 48 * 2. Redistributions in binary form must reproduce the above copyright 49 * notice, this list of conditions and the following disclaimer in the 50 * documentation and/or other materials provided with the distribution. 51 * 3. All advertising materials mentioning features or use of this software 52 * must display the following acknowledgement: 53 * This product includes software developed by the NetBSD 54 * Foundation, Inc. and its contributors. 55 * 4. Neither the name of The NetBSD Foundation nor the names of its 56 * contributors may be used to endorse or promote products derived 57 * from this software without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 60 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 61 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 62 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 63 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 64 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 65 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 66 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 67 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 68 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 69 * POSSIBILITY OF SUCH DAMAGE. 70 */ 71 72 #define WDCDEBUG 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kernel.h> 77 #include <sys/file.h> 78 #include <sys/stat.h> 79 #include <sys/buf.h> 80 #include <sys/malloc.h> 81 #include <sys/device.h> 82 #include <sys/disklabel.h> 83 #include <sys/syslog.h> 84 #include <sys/proc.h> 85 86 #include <machine/intr.h> 87 #include <machine/bus.h> 88 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 89 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 90 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 91 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 92 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 93 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 94 95 #include <dev/ata/atareg.h> 96 #include <dev/ata/atavar.h> 97 #include <dev/ic/wdcreg.h> 98 #include <dev/ic/wdcvar.h> 99 #include <dev/ata/wdvar.h> 100 101 #define DEBUG_INTR 0x01 102 #define DEBUG_XFERS 0x02 103 #define DEBUG_STATUS 0x04 104 #define DEBUG_FUNCS 0x08 105 #define DEBUG_PROBE 0x10 106 #ifdef WDCDEBUG 107 int wdcdebug_wd_mask = DEBUG_PROBE; 108 #define WDCDEBUG_PRINT(args, level) \ 109 if (wdcdebug_wd_mask & (level)) \ 110 printf args 111 #else 112 #define WDCDEBUG_PRINT(args, level) 113 #endif 114 115 #define ATA_DELAY 10000 /* 10s for a drive I/O */ 116 117 int wdprint __P((void *, const char *)); 118 void wdc_ata_bio_start __P((struct channel_softc *,struct wdc_xfer *)); 119 int wdc_ata_bio_intr __P((struct channel_softc *, struct wdc_xfer *)); 120 void wdc_ata_bio_done __P((struct channel_softc *, struct wdc_xfer *)); 121 int wdc_ata_ctrl_intr __P((struct channel_softc *, struct wdc_xfer *)); 122 int wdc_ata_err __P((struct channel_softc *, struct ata_bio *)); 123 #define WDC_ATA_NOERR 0x00 /* Drive doesn't report an error */ 124 #define WDC_ATA_RECOV 0x01 /* There was a recovered error */ 125 #define WDC_ATA_ERR 0x02 /* Drive reports an error */ 126 127 int wdprint(aux, pnp) 128 void *aux; 129 const char *pnp; 130 { 131 struct ata_atapi_attach *aa_link = aux; 132 if (pnp) 133 printf("drive at %s", pnp); 134 printf(" channel %d drive %d", aa_link->aa_channel, 135 aa_link->aa_drv_data->drive); 136 return (UNCONF); 137 } 138 139 void 140 wdc_ata_attach(chp) 141 struct channel_softc *chp; 142 { 143 struct wdc_softc *wdc = chp->wdc; 144 int channel = chp->channel; 145 struct ata_atapi_attach aa_link; 146 int drive; 147 148 WDCDEBUG_PRINT(("wdc_ata_attach\n"), DEBUG_FUNCS | DEBUG_PROBE); 149 150 memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); 151 aa_link.aa_type = T_ATA; 152 aa_link.aa_channel = channel; 153 aa_link.aa_openings = 1; 154 for (drive = 0; drive < 2; drive++) { 155 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATA) == 0) { 156 continue; 157 } 158 aa_link.aa_drv_data = &chp->ch_drive[drive]; 159 if (config_found(&wdc->sc_dev, (void *)&aa_link, wdprint)) 160 wdc_probe_caps(&chp->ch_drive[drive]); 161 } 162 } 163 164 /* 165 * Handle block I/O operation. Return WDC_COMPLETE, WDC_QUEUED, or 166 * WDC_TRY_AGAIN. Must be called at splio(). 167 */ 168 int 169 wdc_ata_bio(drvp, ata_bio) 170 struct ata_drive_datas *drvp; 171 struct ata_bio *ata_bio; 172 { 173 struct wdc_xfer *xfer; 174 struct channel_softc *chp = drvp->chnl_softc; 175 176 xfer = wdc_get_xfer(WDC_NOSLEEP); 177 if (xfer == NULL) 178 return WDC_TRY_AGAIN; 179 if (ata_bio->flags & ATA_POLL) 180 xfer->c_flags |= C_POLL; 181 xfer->drive = drvp->drive; 182 xfer->cmd = ata_bio; 183 xfer->databuf = ata_bio->databuf; 184 xfer->c_bcount = ata_bio->bcount; 185 xfer->c_start = wdc_ata_bio_start; 186 xfer->c_intr = wdc_ata_bio_intr; 187 wdc_exec_xfer(chp, xfer); 188 return (ata_bio->flags & ATA_ITSDONE) ? WDC_COMPLETE : WDC_QUEUED; 189 } 190 191 void 192 wdc_ata_bio_start(chp, xfer) 193 struct channel_softc *chp; 194 struct wdc_xfer *xfer; 195 { 196 struct ata_bio *ata_bio = xfer->cmd; 197 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 198 u_int16_t cyl; 199 u_int8_t head, sect, cmd = 0; 200 int nblks; 201 202 WDCDEBUG_PRINT(("wdc_ata_bio_start\n"), 203 DEBUG_FUNCS | DEBUG_XFERS); 204 205 /* Do control operations specially. */ 206 if (drvp->state < READY) { 207 /* 208 * Actually, we want to be careful not to mess with the control 209 * state if the device is currently busy, but we can assume 210 * that we never get to this point if that's the case. 211 */ 212 /* at this point, we should only be in RECAL state */ 213 if (drvp->state != RECAL) { 214 printf("%s:%d:%d: bad state %d in wdc_ata_bio_start\n", 215 chp->wdc->sc_dev.dv_xname, chp->channel, 216 xfer->drive, drvp->state); 217 panic("wdc_ata_bio_start: bad state"); 218 } 219 xfer->c_intr = wdc_ata_ctrl_intr; 220 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 221 WDSD_IBM | (xfer->drive << 4)); 222 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY) != 0) 223 goto timeout; 224 wdccommandshort(chp, xfer->drive, WDCC_RECAL); 225 drvp->state = RECAL_WAIT; 226 if ((ata_bio->flags & ATA_POLL) == 0) { 227 chp->ch_flags |= WDCF_IRQ_WAIT; 228 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 229 } else { 230 /* Wait for at last 400ns for status bit to be valid */ 231 delay(1); 232 wdc_ata_ctrl_intr(chp, xfer); 233 } 234 return; 235 } 236 237 again: 238 /* 239 * 240 * When starting a multi-sector transfer, or doing single-sector 241 * transfers... 242 */ 243 if (xfer->c_skip == 0 || (ata_bio->flags & ATA_SINGLE) != 0 || 244 (drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) != 0) { 245 if (ata_bio->flags & ATA_SINGLE) 246 nblks = 1; 247 else 248 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 249 /* Check for bad sectors and adjust transfer, if necessary. */ 250 if ((ata_bio->lp->d_flags & D_BADSECT) != 0) { 251 long blkdiff; 252 int i; 253 for (i = 0; (blkdiff = ata_bio->badsect[i]) != -1; 254 i++) { 255 blkdiff -= ata_bio->blkno; 256 if (blkdiff < 0) 257 continue; 258 if (blkdiff == 0) { 259 /* Replace current block of transfer. */ 260 ata_bio->blkno = 261 ata_bio->lp->d_secperunit - 262 ata_bio->lp->d_nsectors - i - 1; 263 } 264 if (blkdiff < nblks) { 265 /* Bad block inside transfer. */ 266 ata_bio->flags |= ATA_SINGLE; 267 nblks = 1; 268 } 269 break; 270 } 271 /* Transfer is okay now. */ 272 } 273 if (ata_bio->flags & ATA_LBA) { 274 sect = (ata_bio->blkno >> 0) & 0xff; 275 cyl = (ata_bio->blkno >> 8) & 0xffff; 276 head = (ata_bio->blkno >> 24) & 0x0f; 277 head |= WDSD_LBA; 278 } else { 279 int blkno = ata_bio->blkno; 280 sect = blkno % ata_bio->lp->d_nsectors; 281 sect++; /* Sectors begin with 1, not 0. */ 282 blkno /= ata_bio->lp->d_nsectors; 283 head = blkno % ata_bio->lp->d_ntracks; 284 blkno /= ata_bio->lp->d_ntracks; 285 cyl = blkno; 286 head |= WDSD_CHS; 287 } 288 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 289 (ata_bio->flags & ATA_SINGLE) == 0) { 290 ata_bio->nblks = nblks; 291 ata_bio->nbytes = xfer->c_bcount; 292 cmd = (ata_bio->flags & ATA_READ) ? 293 WDCC_READDMA : WDCC_WRITEDMA; 294 nblks = ata_bio->nblks; 295 /* Init the DMA channel. */ 296 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 297 chp->channel, xfer->drive, 298 xfer->databuf + xfer->c_skip, ata_bio->nbytes, 299 ata_bio->flags & ATA_READ) != 0) { 300 ata_bio->error = ERR_DMA; 301 ata_bio->r_error = 0; 302 wdc_ata_bio_done(chp, xfer); 303 return; 304 } 305 /* Initiate command */ 306 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 307 WDSD_IBM | (xfer->drive << 4)); 308 if (wait_for_ready(chp, ATA_DELAY) < 0) 309 goto timeout; 310 wdccommand(chp, xfer->drive, cmd, cyl, 311 head, sect, nblks, 0); 312 /* start the DMA channel */ 313 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 314 chp->channel, xfer->drive, 315 ata_bio->flags & ATA_READ); 316 /* wait for irq */ 317 goto intr; 318 } /* else not DMA */ 319 ata_bio->nblks = min(nblks, ata_bio->multi); 320 ata_bio->nbytes = ata_bio->nblks * ata_bio->lp->d_secsize; 321 if (ata_bio->nblks > 1 && (ata_bio->flags & ATA_SINGLE) == 0) { 322 cmd = (ata_bio->flags & ATA_READ) ? 323 WDCC_READMULTI : WDCC_WRITEMULTI; 324 } else { 325 cmd = (ata_bio->flags & ATA_READ) ? 326 WDCC_READ : WDCC_WRITE; 327 } 328 /* Initiate command! */ 329 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 330 WDSD_IBM | (xfer->drive << 4)); 331 if (wait_for_ready(chp, ATA_DELAY) < 0) 332 goto timeout; 333 wdccommand(chp, xfer->drive, cmd, cyl, 334 head, sect, nblks, 335 (ata_bio->lp->d_type == DTYPE_ST506) ? 336 ata_bio->lp->d_precompcyl / 4 : 0); 337 } else if (ata_bio->nblks > 1) { 338 /* The number of blocks in the last stretch may be smaller. */ 339 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 340 if (ata_bio->nblks > nblks) { 341 ata_bio->nblks = nblks; 342 ata_bio->nbytes = xfer->c_bcount; 343 } 344 } 345 /* If this was a write and not using DMA, push the data. */ 346 if ((ata_bio->flags & ATA_READ) == 0) { 347 /* Wait for at last 400ns for status bit to be valid */ 348 delay(1); 349 if (wait_for_drq(chp, ATA_DELAY) != 0) { 350 printf("%s:%d:%d: timeout waiting for DRQ, " 351 "st=0x%02x, err=0x%02x\n", 352 chp->wdc->sc_dev.dv_xname, chp->channel, 353 xfer->drive, chp->ch_status, chp->ch_error); 354 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 355 ata_bio->error = TIMEOUT; 356 wdc_ata_bio_done(chp, xfer); 357 return; 358 } 359 if (wdc_ata_err(chp, ata_bio) == WDC_ATA_ERR) { 360 wdc_ata_bio_done(chp, xfer); 361 return; 362 } 363 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 364 if (drvp->drive_flags & DRIVE_CAP32) { 365 bus_space_write_multi_4(chp->cmd_iot, 366 chp->cmd_ioh, wd_data, 367 xfer->databuf + xfer->c_skip, 368 ata_bio->nbytes >> 2); 369 } else { 370 bus_space_write_multi_2(chp->cmd_iot, 371 chp->cmd_ioh, wd_data, 372 xfer->databuf + xfer->c_skip, 373 ata_bio->nbytes >> 1); 374 } 375 } else { 376 if (drvp->drive_flags & DRIVE_CAP32) { 377 bus_space_write_multi_stream_4(chp->cmd_iot, 378 chp->cmd_ioh, wd_data, 379 xfer->databuf + xfer->c_skip, 380 ata_bio->nbytes >> 2); 381 } else { 382 bus_space_write_multi_stream_2(chp->cmd_iot, 383 chp->cmd_ioh, wd_data, 384 xfer->databuf + xfer->c_skip, 385 ata_bio->nbytes >> 1); 386 } 387 } 388 } 389 390 intr: /* Wait for IRQ (either real or polled) */ 391 if ((ata_bio->flags & ATA_POLL) == 0) { 392 chp->ch_flags |= WDCF_IRQ_WAIT; 393 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 394 } else { 395 /* Wait for at last 400ns for status bit to be valid */ 396 delay(1); 397 wdc_ata_bio_intr(chp, xfer); 398 if ((ata_bio->flags & ATA_ITSDONE) == 0) 399 goto again; 400 } 401 return; 402 timeout: 403 printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", 404 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 405 chp->ch_status, chp->ch_error); 406 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 407 ata_bio->error = TIMEOUT; 408 wdc_ata_bio_done(chp, xfer); 409 return; 410 } 411 412 int 413 wdc_ata_bio_intr(chp, xfer) 414 struct channel_softc *chp; 415 struct wdc_xfer *xfer; 416 { 417 struct ata_bio *ata_bio = xfer->cmd; 418 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 419 int drv_err; 420 421 WDCDEBUG_PRINT(("wdc_ata_bio_intr\n"), DEBUG_INTR); 422 423 /* Is it not a transfer, but a control operation? */ 424 if (drvp->state < READY) { 425 printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", 426 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 427 drvp->state); 428 panic("wdc_ata_bio_intr: bad state\n"); 429 } 430 431 /* Ack interrupt done by wait_for_unbusy */ 432 if (wait_for_unbusy(chp, ATA_DELAY) < 0) { 433 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 434 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 435 xfer->c_bcount, xfer->c_skip); 436 /* if we were using DMA, turn off DMA channel */ 437 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 438 (ata_bio->flags & ATA_SINGLE) == 0) 439 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 440 chp->channel, xfer->drive, 441 ata_bio->flags & ATA_READ); 442 ata_bio->error = TIMEOUT; 443 wdc_ata_bio_done(chp, xfer); 444 return 1; 445 } 446 447 drv_err = wdc_ata_err(chp, ata_bio); 448 449 /* If we were using DMA, Turn off the DMA channel and check for error */ 450 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 451 (ata_bio->flags & ATA_SINGLE) == 0) { 452 if (ata_bio->flags & ATA_POLL) { 453 /* 454 * IDE drives deassert WDCS_BSY before trasfert is 455 * complete when using DMA. Polling for DRQ to deassert 456 * is not enouth because INTR may not be 457 * flagged in the DMA status, so poll for DRDY. 458 */ 459 wdcwait(chp, WDCS_DRDY | WDCS_DRQ, WDCS_DRDY, 460 ATA_DELAY); 461 delay(50); 462 } 463 if (chp->ch_status & WDCS_DRQ) { 464 printf("%s:%d:%d: intr with DRQ (st=0x%x)\n", 465 chp->wdc->sc_dev.dv_xname, chp->channel, 466 xfer->drive, chp->ch_status); 467 ata_bio->error = TIMEOUT; 468 wdc_ata_bio_done(chp, xfer); 469 return 1; 470 } 471 if ((*chp->wdc->dma_finish)(chp->wdc->dma_arg, 472 chp->channel, xfer->drive, ata_bio->flags & ATA_READ)) { 473 if (drv_err != WDC_ATA_ERR) { 474 ata_bio->error = ERR_DMA; 475 drv_err = WDC_ATA_ERR; 476 } 477 } 478 if (drv_err != WDC_ATA_ERR) 479 goto end; 480 481 } 482 483 /* if we had an error, end */ 484 if (drv_err == WDC_ATA_ERR) { 485 wdc_ata_bio_done(chp, xfer); 486 return 1; 487 } 488 489 /* If this was a read and not using DMA, fetch the data. */ 490 if ((ata_bio->flags & ATA_READ) != 0) { 491 if ((chp->ch_status & (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) != 492 (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) { 493 printf("%s:%d:%d: read intr before drq\n", 494 chp->wdc->sc_dev.dv_xname, chp->channel, 495 xfer->drive); 496 ata_bio->error = TIMEOUT; 497 wdc_ata_bio_done(chp, xfer); 498 return 1; 499 } 500 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 501 if (drvp->drive_flags & DRIVE_CAP32) { 502 bus_space_read_multi_4(chp->cmd_iot, 503 chp->cmd_ioh, wd_data, 504 xfer->databuf + xfer->c_skip, 505 ata_bio->nbytes >> 2); 506 } else { 507 bus_space_read_multi_2(chp->cmd_iot, 508 chp->cmd_ioh, wd_data, 509 xfer->databuf + xfer->c_skip, 510 ata_bio->nbytes >> 1); 511 } 512 } else { 513 if (drvp->drive_flags & DRIVE_CAP32) { 514 bus_space_read_multi_stream_4(chp->cmd_iot, 515 chp->cmd_ioh, wd_data, 516 xfer->databuf + xfer->c_skip, 517 ata_bio->nbytes >> 2); 518 } else { 519 bus_space_read_multi_stream_2(chp->cmd_iot, 520 chp->cmd_ioh, wd_data, 521 xfer->databuf + xfer->c_skip, 522 ata_bio->nbytes >> 1); 523 } 524 } 525 } 526 527 end: 528 ata_bio->blkno += ata_bio->nblks; 529 ata_bio->blkdone += ata_bio->nblks; 530 xfer->c_skip += ata_bio->nbytes; 531 xfer->c_bcount -= ata_bio->nbytes; 532 /* See if this transfer is complete. */ 533 if (xfer->c_bcount > 0) { 534 if ((ata_bio->flags & ATA_POLL) == 0) { 535 /* Start the next operation */ 536 wdc_ata_bio_start(chp, xfer); 537 } else { 538 /* Let wdc_ata_bio_start do the loop */ 539 return 1; 540 } 541 } else { /* Done with this transfer */ 542 ata_bio->error = NOERROR; 543 wdc_ata_bio_done(chp, xfer); 544 } 545 return 1; 546 } 547 548 void 549 wdc_ata_bio_done(chp, xfer) 550 struct channel_softc *chp; 551 struct wdc_xfer *xfer; 552 { 553 struct ata_bio *ata_bio = xfer->cmd; 554 int need_done = xfer->c_flags & C_NEEDDONE; 555 int drive = xfer->drive; 556 557 WDCDEBUG_PRINT(("wdc_ata_bio_done: flags 0x%x\n", (u_int)xfer->c_flags), 558 DEBUG_FUNCS); 559 560 /* feed back residual bcount to our caller */ 561 ata_bio->bcount = xfer->c_bcount; 562 563 /* remove this command from xfer queue */ 564 wdc_free_xfer(chp, xfer); 565 566 ata_bio->flags |= ATA_ITSDONE; 567 if (need_done) { 568 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_FUNCS); 569 wddone(chp->ch_drive[drive].drv_softc); 570 } 571 WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", 572 chp->ch_flags), DEBUG_FUNCS); 573 wdcstart(chp->wdc, chp->channel); 574 } 575 576 /* 577 * Implement operations needed before read/write. 578 */ 579 int 580 wdc_ata_ctrl_intr(chp, xfer) 581 struct channel_softc *chp; 582 struct wdc_xfer *xfer; 583 { 584 struct ata_bio *ata_bio = xfer->cmd; 585 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 586 char *errstring = NULL; 587 WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), 588 DEBUG_FUNCS); 589 590 again: 591 switch (drvp->state) { 592 case RECAL: /* Should not be in this state here */ 593 panic("wdc_ata_ctrl_intr: state==RECAL"); 594 break; 595 596 case RECAL_WAIT: 597 errstring = "recal"; 598 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 599 goto timeout; 600 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 601 goto error; 602 /* fall through */ 603 604 case PIOMODE: 605 /* Don't try to set mode if controller can't be adjusted */ 606 if ((chp->wdc->cap & WDC_CAPABILITY_PIO) == 0) 607 goto dmamode; 608 /* 609 * if mode is < 3, it is unknown. Assume the defaults are 610 * good. 611 */ 612 if (drvp->PIO_mode < 3) 613 goto dmamode; 614 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 615 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 616 drvp->state = PIOMODE_WAIT; 617 break; 618 619 case PIOMODE_WAIT: 620 errstring = "piomode"; 621 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 622 goto timeout; 623 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 624 goto error; 625 /* fall through */ 626 627 case DMAMODE: 628 dmamode: 629 if (drvp->drive_flags & DRIVE_UDMA) { 630 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 631 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 632 } else if (drvp->drive_flags & DRIVE_DMA) { 633 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 634 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 635 } else { 636 goto geometry; 637 } 638 drvp->state = DMAMODE_WAIT; 639 break; 640 case DMAMODE_WAIT: 641 errstring = "dmamode"; 642 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 643 goto timeout; 644 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 645 goto error; 646 /* fall through */ 647 648 case GEOMETRY: 649 geometry: 650 if (ata_bio->flags & ATA_LBA) 651 goto multimode; 652 wdccommand(chp, xfer->drive, WDCC_IDP, 653 ata_bio->lp->d_ncylinders, 654 ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, 655 (ata_bio->lp->d_type == DTYPE_ST506) ? 656 ata_bio->lp->d_precompcyl / 4 : 0); 657 drvp->state = GEOMETRY_WAIT; 658 break; 659 660 case GEOMETRY_WAIT: 661 errstring = "geometry"; 662 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 663 goto timeout; 664 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 665 goto error; 666 /* fall through */ 667 668 case MULTIMODE: 669 multimode: 670 if (ata_bio->multi == 1) 671 goto ready; 672 wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, 673 ata_bio->multi, 0); 674 drvp->state = MULTIMODE_WAIT; 675 break; 676 677 case MULTIMODE_WAIT: 678 errstring = "setmulti"; 679 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 680 goto timeout; 681 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 682 goto error; 683 /* fall through */ 684 685 case READY: 686 ready: 687 drvp->state = READY; 688 /* 689 * The drive is usable now 690 */ 691 xfer->c_intr = wdc_ata_bio_intr; 692 wdc_ata_bio_start(chp, xfer); 693 return 1; 694 } 695 696 if ((ata_bio->flags & ATA_POLL) == 0) { 697 chp->ch_flags |= WDCF_IRQ_WAIT; 698 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 699 } else { 700 goto again; 701 } 702 return 1; 703 704 timeout: 705 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 706 return 0; /* IRQ was not for us */ 707 } 708 printf("%s:%d:%d: %s timed out\n", 709 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 710 ata_bio->error = TIMEOUT; 711 drvp->state = 0; 712 wdc_ata_bio_done(chp, xfer); 713 return 0; 714 error: 715 printf("%s:%d:%d: %s ", 716 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 717 errstring); 718 if (chp->ch_status & WDCS_DWF) { 719 printf("drive fault\n"); 720 ata_bio->error = ERR_DF; 721 } else { 722 printf("error (%x)\n", chp->ch_error); 723 ata_bio->r_error = chp->ch_error; 724 ata_bio->error = ERROR; 725 } 726 drvp->state = 0; 727 wdc_ata_bio_done(chp, xfer); 728 return 1; 729 } 730 731 int 732 wdc_ata_err(chp, ata_bio) 733 struct channel_softc *chp; 734 struct ata_bio *ata_bio; 735 { 736 ata_bio->error = 0; 737 if (chp->ch_status & WDCS_BSY) { 738 ata_bio->error = TIMEOUT; 739 return WDC_ATA_ERR; 740 } 741 742 if (chp->ch_status & WDCS_DWF) { 743 ata_bio->error = ERR_DF; 744 return WDC_ATA_ERR; 745 } 746 747 if (chp->ch_status & WDCS_ERR) { 748 ata_bio->error = ERROR; 749 ata_bio->r_error = chp->ch_error; 750 if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | 751 WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) 752 return WDC_ATA_ERR; 753 return WDC_ATA_NOERR; 754 } 755 756 if (chp->ch_status & WDCS_CORR) 757 ata_bio->flags |= ATA_CORR; 758 return WDC_ATA_NOERR; 759 } 760
Indexes created Thu Oct 23 22:10:10 GMT 2025