ata_wdc.c revision 1.1.2.13
1 /* $NetBSD: ata_wdc.c,v 1.1.2.13 1998/10/04 15:50:23 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 void wdc_ata_bio_start __P((struct channel_softc *,struct wdc_xfer *)); 118 int wdc_ata_bio_intr __P((struct channel_softc *, struct wdc_xfer *)); 119 void wdc_ata_bio_done __P((struct channel_softc *, struct wdc_xfer *)); 120 int wdc_ata_ctrl_intr __P((struct channel_softc *, struct wdc_xfer *)); 121 int wdc_ata_err __P((struct channel_softc *, struct ata_bio *)); 122 #define WDC_ATA_NOERR 0x00 /* Drive doesn't report an error */ 123 #define WDC_ATA_RECOV 0x01 /* There was a recovered error */ 124 #define WDC_ATA_ERR 0x02 /* Drive reports an error */ 125 126 /* 127 * Handle block I/O operation. Return WDC_COMPLETE, WDC_QUEUED, or 128 * WDC_TRY_AGAIN. Must be called at splio(). 129 */ 130 int 131 wdc_ata_bio(drvp, ata_bio) 132 struct ata_drive_datas *drvp; 133 struct ata_bio *ata_bio; 134 { 135 struct wdc_xfer *xfer; 136 struct channel_softc *chp = drvp->chnl_softc; 137 138 xfer = wdc_get_xfer(WDC_NOSLEEP); 139 if (xfer == NULL) 140 return WDC_TRY_AGAIN; 141 if (ata_bio->flags & ATA_POLL) 142 xfer->c_flags |= C_POLL; 143 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 144 (ata_bio->flags & ATA_SINGLE) == 0) 145 xfer->c_flags |= C_DMA; 146 xfer->drive = drvp->drive; 147 xfer->cmd = ata_bio; 148 xfer->databuf = ata_bio->databuf; 149 xfer->c_bcount = ata_bio->bcount; 150 xfer->c_start = wdc_ata_bio_start; 151 xfer->c_intr = wdc_ata_bio_intr; 152 wdc_exec_xfer(chp, xfer); 153 return (ata_bio->flags & ATA_ITSDONE) ? WDC_COMPLETE : WDC_QUEUED; 154 } 155 156 void 157 wdc_ata_bio_start(chp, xfer) 158 struct channel_softc *chp; 159 struct wdc_xfer *xfer; 160 { 161 struct ata_bio *ata_bio = xfer->cmd; 162 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 163 u_int16_t cyl; 164 u_int8_t head, sect, cmd = 0; 165 int nblks; 166 int dma_flags = 0; 167 168 WDCDEBUG_PRINT(("wdc_ata_bio_start %s:%d:%d\n", 169 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 170 DEBUG_FUNCS | DEBUG_XFERS); 171 172 /* Do control operations specially. */ 173 if (drvp->state < READY) { 174 /* 175 * Actually, we want to be careful not to mess with the control 176 * state if the device is currently busy, but we can assume 177 * that we never get to this point if that's the case. 178 */ 179 /* at this point, we should only be in RECAL state */ 180 if (drvp->state != RECAL) { 181 printf("%s:%d:%d: bad state %d in wdc_ata_bio_start\n", 182 chp->wdc->sc_dev.dv_xname, chp->channel, 183 xfer->drive, drvp->state); 184 panic("wdc_ata_bio_start: bad state"); 185 } 186 xfer->c_intr = wdc_ata_ctrl_intr; 187 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 188 WDSD_IBM | (xfer->drive << 4)); 189 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY) != 0) 190 goto timeout; 191 wdccommandshort(chp, xfer->drive, WDCC_RECAL); 192 drvp->state = RECAL_WAIT; 193 if ((ata_bio->flags & ATA_POLL) == 0) { 194 chp->ch_flags |= WDCF_IRQ_WAIT; 195 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 196 } else { 197 /* Wait for at last 400ns for status bit to be valid */ 198 delay(1); 199 wdc_ata_ctrl_intr(chp, xfer); 200 } 201 return; 202 } 203 204 if (xfer->c_flags & C_DMA) { 205 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 206 dma_flags |= (ata_bio->flags & ATA_POLL) ? WDC_DMA_POLL : 0; 207 } 208 again: 209 /* 210 * 211 * When starting a multi-sector transfer, or doing single-sector 212 * transfers... 213 */ 214 if (xfer->c_skip == 0 || (ata_bio->flags & ATA_SINGLE) != 0) { 215 if (ata_bio->flags & ATA_SINGLE) 216 nblks = 1; 217 else 218 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 219 /* Check for bad sectors and adjust transfer, if necessary. */ 220 if ((ata_bio->lp->d_flags & D_BADSECT) != 0) { 221 long blkdiff; 222 int i; 223 for (i = 0; (blkdiff = ata_bio->badsect[i]) != -1; 224 i++) { 225 blkdiff -= ata_bio->blkno; 226 if (blkdiff < 0) 227 continue; 228 if (blkdiff == 0) { 229 /* Replace current block of transfer. */ 230 ata_bio->blkno = 231 ata_bio->lp->d_secperunit - 232 ata_bio->lp->d_nsectors - i - 1; 233 } 234 if (blkdiff < nblks) { 235 /* Bad block inside transfer. */ 236 ata_bio->flags |= ATA_SINGLE; 237 nblks = 1; 238 } 239 break; 240 } 241 /* Transfer is okay now. */ 242 } 243 if (ata_bio->flags & ATA_LBA) { 244 sect = (ata_bio->blkno >> 0) & 0xff; 245 cyl = (ata_bio->blkno >> 8) & 0xffff; 246 head = (ata_bio->blkno >> 24) & 0x0f; 247 head |= WDSD_LBA; 248 } else { 249 int blkno = ata_bio->blkno; 250 sect = blkno % ata_bio->lp->d_nsectors; 251 sect++; /* Sectors begin with 1, not 0. */ 252 blkno /= ata_bio->lp->d_nsectors; 253 head = blkno % ata_bio->lp->d_ntracks; 254 blkno /= ata_bio->lp->d_ntracks; 255 cyl = blkno; 256 head |= WDSD_CHS; 257 } 258 if (xfer->c_flags & C_DMA) { 259 ata_bio->nblks = nblks; 260 ata_bio->nbytes = xfer->c_bcount; 261 cmd = (ata_bio->flags & ATA_READ) ? 262 WDCC_READDMA : WDCC_WRITEDMA; 263 nblks = ata_bio->nblks; 264 /* Init the DMA channel. */ 265 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 266 chp->channel, xfer->drive, 267 xfer->databuf + xfer->c_skip, ata_bio->nbytes, 268 dma_flags) != 0) { 269 ata_bio->error = ERR_DMA; 270 ata_bio->r_error = 0; 271 wdc_ata_bio_done(chp, xfer); 272 return; 273 } 274 /* Initiate command */ 275 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 276 WDSD_IBM | (xfer->drive << 4)); 277 if (wait_for_ready(chp, ATA_DELAY) < 0) 278 goto timeout; 279 wdccommand(chp, xfer->drive, cmd, cyl, 280 head, sect, nblks, 0); 281 /* start the DMA channel */ 282 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 283 chp->channel, xfer->drive, dma_flags); 284 /* wait for irq */ 285 goto intr; 286 } /* else not DMA */ 287 ata_bio->nblks = min(nblks, ata_bio->multi); 288 ata_bio->nbytes = ata_bio->nblks * ata_bio->lp->d_secsize; 289 if (ata_bio->nblks > 1 && (ata_bio->flags & ATA_SINGLE) == 0) { 290 cmd = (ata_bio->flags & ATA_READ) ? 291 WDCC_READMULTI : WDCC_WRITEMULTI; 292 } else { 293 cmd = (ata_bio->flags & ATA_READ) ? 294 WDCC_READ : WDCC_WRITE; 295 } 296 /* Initiate command! */ 297 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 298 WDSD_IBM | (xfer->drive << 4)); 299 if (wait_for_ready(chp, ATA_DELAY) < 0) 300 goto timeout; 301 wdccommand(chp, xfer->drive, cmd, cyl, 302 head, sect, nblks, 303 (ata_bio->lp->d_type == DTYPE_ST506) ? 304 ata_bio->lp->d_precompcyl / 4 : 0); 305 } else if (ata_bio->nblks > 1) { 306 /* The number of blocks in the last stretch may be smaller. */ 307 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 308 if (ata_bio->nblks > nblks) { 309 ata_bio->nblks = nblks; 310 ata_bio->nbytes = xfer->c_bcount; 311 } 312 } 313 /* If this was a write and not using DMA, push the data. */ 314 if ((ata_bio->flags & ATA_READ) == 0) { 315 /* Wait for at last 400ns for status bit to be valid */ 316 delay(1); 317 if (wait_for_drq(chp, ATA_DELAY) != 0) { 318 printf("%s:%d:%d: timeout waiting for DRQ, " 319 "st=0x%02x, err=0x%02x\n", 320 chp->wdc->sc_dev.dv_xname, chp->channel, 321 xfer->drive, chp->ch_status, chp->ch_error); 322 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 323 ata_bio->error = TIMEOUT; 324 wdc_ata_bio_done(chp, xfer); 325 return; 326 } 327 if (wdc_ata_err(chp, ata_bio) == WDC_ATA_ERR) { 328 wdc_ata_bio_done(chp, xfer); 329 return; 330 } 331 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 332 if (drvp->drive_flags & DRIVE_CAP32) { 333 bus_space_write_multi_4(chp->data32iot, 334 chp->data32ioh, 0, 335 xfer->databuf + xfer->c_skip, 336 ata_bio->nbytes >> 2); 337 } else { 338 bus_space_write_multi_2(chp->cmd_iot, 339 chp->cmd_ioh, wd_data, 340 xfer->databuf + xfer->c_skip, 341 ata_bio->nbytes >> 1); 342 } 343 } else { 344 if (drvp->drive_flags & DRIVE_CAP32) { 345 bus_space_write_multi_stream_4(chp->data32iot, 346 chp->data32ioh, 0, 347 xfer->databuf + xfer->c_skip, 348 ata_bio->nbytes >> 2); 349 } else { 350 bus_space_write_multi_stream_2(chp->cmd_iot, 351 chp->cmd_ioh, wd_data, 352 xfer->databuf + xfer->c_skip, 353 ata_bio->nbytes >> 1); 354 } 355 } 356 } 357 358 intr: /* Wait for IRQ (either real or polled) */ 359 if ((ata_bio->flags & ATA_POLL) == 0) { 360 chp->ch_flags |= WDCF_IRQ_WAIT; 361 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 362 } else { 363 /* Wait for at last 400ns for status bit to be valid */ 364 delay(1); 365 wdc_ata_bio_intr(chp, xfer); 366 if ((ata_bio->flags & ATA_ITSDONE) == 0) 367 goto again; 368 } 369 return; 370 timeout: 371 printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", 372 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 373 chp->ch_status, chp->ch_error); 374 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 375 ata_bio->error = TIMEOUT; 376 wdc_ata_bio_done(chp, xfer); 377 return; 378 } 379 380 int 381 wdc_ata_bio_intr(chp, xfer) 382 struct channel_softc *chp; 383 struct wdc_xfer *xfer; 384 { 385 struct ata_bio *ata_bio = xfer->cmd; 386 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 387 int drv_err; 388 int dma_flags = 0; 389 390 WDCDEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", 391 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 392 DEBUG_INTR | DEBUG_XFERS); 393 394 395 /* Is it not a transfer, but a control operation? */ 396 if (drvp->state < READY) { 397 printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", 398 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 399 drvp->state); 400 panic("wdc_ata_bio_intr: bad state\n"); 401 } 402 403 if (xfer->c_flags & C_DMA) { 404 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 405 dma_flags |= (ata_bio->flags & ATA_POLL) ? WDC_DMA_POLL : 0; 406 } 407 408 /* Ack interrupt done by wait_for_unbusy */ 409 if (wait_for_unbusy(chp, ATA_DELAY) < 0) { 410 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 411 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 412 xfer->c_bcount, xfer->c_skip); 413 /* if we were using DMA, turn off DMA channel */ 414 if (xfer->c_flags & C_DMA) 415 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 416 chp->channel, xfer->drive, dma_flags); 417 ata_bio->error = TIMEOUT; 418 wdc_ata_bio_done(chp, xfer); 419 return 1; 420 } 421 422 drv_err = wdc_ata_err(chp, ata_bio); 423 424 /* If we were using DMA, Turn off the DMA channel and check for error */ 425 if (xfer->c_flags & C_DMA) { 426 if (ata_bio->flags & ATA_POLL) { 427 /* 428 * IDE drives deassert WDCS_BSY before trasfert is 429 * complete when using DMA. Polling for DRQ to deassert 430 * is not enouth DRQ is not required to be 431 * asserted for DMA transferts, so poll for DRDY. 432 */ 433 if (wdcwait(chp, WDCS_DRDY | WDCS_DRQ, WDCS_DRDY, 434 ATA_DELAY) < 0) { 435 printf("%s:%d:%d: polled transfert timed out " 436 "(st=0x%x)\n", chp->wdc->sc_dev.dv_xname, 437 chp->channel, xfer->drive, chp->ch_status); 438 ata_bio->error = TIMEOUT; 439 wdc_ata_bio_done(chp, xfer); 440 return 1; 441 } 442 } 443 if (chp->ch_status & WDCS_DRQ) { 444 if (drv_err != WDC_ATA_ERR) { 445 printf("%s:%d:%d: intr with DRQ (st=0x%x)\n", 446 chp->wdc->sc_dev.dv_xname, chp->channel, 447 xfer->drive, chp->ch_status); 448 ata_bio->error = TIMEOUT; 449 drv_err = WDC_ATA_ERR; 450 } 451 } 452 if ((*chp->wdc->dma_finish)(chp->wdc->dma_arg, 453 chp->channel, xfer->drive, dma_flags) != 0) { 454 if (drv_err != WDC_ATA_ERR) { 455 ata_bio->error = ERR_DMA; 456 drv_err = WDC_ATA_ERR; 457 } 458 } 459 if (drv_err != WDC_ATA_ERR) 460 goto end; 461 462 } 463 464 /* if we had an error, end */ 465 if (drv_err == WDC_ATA_ERR) { 466 wdc_ata_bio_done(chp, xfer); 467 return 1; 468 } 469 470 /* If this was a read and not using DMA, fetch the data. */ 471 if ((ata_bio->flags & ATA_READ) != 0) { 472 if ((chp->ch_status & (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) != 473 (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) { 474 printf("%s:%d:%d: read intr before drq\n", 475 chp->wdc->sc_dev.dv_xname, chp->channel, 476 xfer->drive); 477 ata_bio->error = TIMEOUT; 478 wdc_ata_bio_done(chp, xfer); 479 return 1; 480 } 481 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 482 if (drvp->drive_flags & DRIVE_CAP32) { 483 bus_space_read_multi_4(chp->data32iot, 484 chp->data32ioh, 0, 485 xfer->databuf + xfer->c_skip, 486 ata_bio->nbytes >> 2); 487 } else { 488 bus_space_read_multi_2(chp->cmd_iot, 489 chp->cmd_ioh, wd_data, 490 xfer->databuf + xfer->c_skip, 491 ata_bio->nbytes >> 1); 492 } 493 } else { 494 if (drvp->drive_flags & DRIVE_CAP32) { 495 bus_space_read_multi_stream_4(chp->data32iot, 496 chp->data32ioh, 0, 497 xfer->databuf + xfer->c_skip, 498 ata_bio->nbytes >> 2); 499 } else { 500 bus_space_read_multi_stream_2(chp->cmd_iot, 501 chp->cmd_ioh, wd_data, 502 xfer->databuf + xfer->c_skip, 503 ata_bio->nbytes >> 1); 504 } 505 } 506 } 507 508 end: 509 ata_bio->blkno += ata_bio->nblks; 510 ata_bio->blkdone += ata_bio->nblks; 511 xfer->c_skip += ata_bio->nbytes; 512 xfer->c_bcount -= ata_bio->nbytes; 513 /* See if this transfer is complete. */ 514 if (xfer->c_bcount > 0) { 515 if ((ata_bio->flags & ATA_POLL) == 0) { 516 /* Start the next operation */ 517 wdc_ata_bio_start(chp, xfer); 518 } else { 519 /* Let wdc_ata_bio_start do the loop */ 520 return 1; 521 } 522 } else { /* Done with this transfer */ 523 ata_bio->error = NOERROR; 524 wdc_ata_bio_done(chp, xfer); 525 } 526 return 1; 527 } 528 529 void 530 wdc_ata_bio_done(chp, xfer) 531 struct channel_softc *chp; 532 struct wdc_xfer *xfer; 533 { 534 struct ata_bio *ata_bio = xfer->cmd; 535 int need_done = xfer->c_flags & C_NEEDDONE; 536 int drive = xfer->drive; 537 538 WDCDEBUG_PRINT(("wdc_ata_bio_done: flags 0x%x\n", (u_int)xfer->c_flags), 539 DEBUG_FUNCS); 540 541 /* feed back residual bcount to our caller */ 542 ata_bio->bcount = xfer->c_bcount; 543 544 /* remove this command from xfer queue */ 545 wdc_free_xfer(chp, xfer); 546 547 ata_bio->flags |= ATA_ITSDONE; 548 if (need_done) { 549 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_FUNCS); 550 wddone(chp->ch_drive[drive].drv_softc); 551 } 552 WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", 553 chp->ch_flags), DEBUG_FUNCS); 554 wdcstart(chp->wdc, chp->channel); 555 } 556 557 /* 558 * Implement operations needed before read/write. 559 */ 560 int 561 wdc_ata_ctrl_intr(chp, xfer) 562 struct channel_softc *chp; 563 struct wdc_xfer *xfer; 564 { 565 struct ata_bio *ata_bio = xfer->cmd; 566 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 567 char *errstring = NULL; 568 WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), 569 DEBUG_FUNCS); 570 571 again: 572 switch (drvp->state) { 573 case RECAL: /* Should not be in this state here */ 574 panic("wdc_ata_ctrl_intr: state==RECAL"); 575 break; 576 577 case RECAL_WAIT: 578 errstring = "recal"; 579 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 580 goto timeout; 581 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 582 goto error; 583 /* fall through */ 584 585 case PIOMODE: 586 /* Don't try to set mode if controller can't be adjusted */ 587 if ((chp->wdc->cap & WDC_CAPABILITY_PIO) == 0) 588 goto dmamode; 589 /* 590 * if mode is < 3, it is unknown. Assume the defaults are 591 * good. 592 */ 593 if (drvp->PIO_mode < 3) 594 goto dmamode; 595 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 596 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 597 drvp->state = PIOMODE_WAIT; 598 break; 599 600 case PIOMODE_WAIT: 601 errstring = "piomode"; 602 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 603 goto timeout; 604 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 605 goto error; 606 /* fall through */ 607 608 case DMAMODE: 609 dmamode: 610 if (drvp->drive_flags & DRIVE_UDMA) { 611 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 612 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 613 } else if (drvp->drive_flags & DRIVE_DMA) { 614 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 615 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 616 } else { 617 goto geometry; 618 } 619 drvp->state = DMAMODE_WAIT; 620 break; 621 case DMAMODE_WAIT: 622 errstring = "dmamode"; 623 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 624 goto timeout; 625 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 626 goto error; 627 /* fall through */ 628 629 case GEOMETRY: 630 geometry: 631 if (ata_bio->flags & ATA_LBA) 632 goto multimode; 633 wdccommand(chp, xfer->drive, WDCC_IDP, 634 ata_bio->lp->d_ncylinders, 635 ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, 636 (ata_bio->lp->d_type == DTYPE_ST506) ? 637 ata_bio->lp->d_precompcyl / 4 : 0); 638 drvp->state = GEOMETRY_WAIT; 639 break; 640 641 case GEOMETRY_WAIT: 642 errstring = "geometry"; 643 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 644 goto timeout; 645 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 646 goto error; 647 /* fall through */ 648 649 case MULTIMODE: 650 multimode: 651 if (ata_bio->multi == 1) 652 goto ready; 653 wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, 654 ata_bio->multi, 0); 655 drvp->state = MULTIMODE_WAIT; 656 break; 657 658 case MULTIMODE_WAIT: 659 errstring = "setmulti"; 660 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 661 goto timeout; 662 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 663 goto error; 664 /* fall through */ 665 666 case READY: 667 ready: 668 drvp->state = READY; 669 /* 670 * The drive is usable now 671 */ 672 xfer->c_intr = wdc_ata_bio_intr; 673 wdc_ata_bio_start(chp, xfer); 674 return 1; 675 } 676 677 if ((ata_bio->flags & ATA_POLL) == 0) { 678 chp->ch_flags |= WDCF_IRQ_WAIT; 679 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 680 } else { 681 goto again; 682 } 683 return 1; 684 685 timeout: 686 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 687 return 0; /* IRQ was not for us */ 688 } 689 printf("%s:%d:%d: %s timed out\n", 690 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 691 ata_bio->error = TIMEOUT; 692 drvp->state = 0; 693 wdc_ata_bio_done(chp, xfer); 694 return 0; 695 error: 696 printf("%s:%d:%d: %s ", 697 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 698 errstring); 699 if (chp->ch_status & WDCS_DWF) { 700 printf("drive fault\n"); 701 ata_bio->error = ERR_DF; 702 } else { 703 printf("error (%x)\n", chp->ch_error); 704 ata_bio->r_error = chp->ch_error; 705 ata_bio->error = ERROR; 706 } 707 drvp->state = 0; 708 wdc_ata_bio_done(chp, xfer); 709 return 1; 710 } 711 712 int 713 wdc_ata_err(chp, ata_bio) 714 struct channel_softc *chp; 715 struct ata_bio *ata_bio; 716 { 717 ata_bio->error = 0; 718 if (chp->ch_status & WDCS_BSY) { 719 ata_bio->error = TIMEOUT; 720 return WDC_ATA_ERR; 721 } 722 723 if (chp->ch_status & WDCS_DWF) { 724 ata_bio->error = ERR_DF; 725 return WDC_ATA_ERR; 726 } 727 728 if (chp->ch_status & WDCS_ERR) { 729 ata_bio->error = ERROR; 730 ata_bio->r_error = chp->ch_error; 731 if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | 732 WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) 733 return WDC_ATA_ERR; 734 return WDC_ATA_NOERR; 735 } 736 737 if (chp->ch_status & WDCS_CORR) 738 ata_bio->flags |= ATA_CORR; 739 return WDC_ATA_NOERR; 740 } 741
Indexes created Thu Oct 23 22:10:10 GMT 2025