ata_wdc.c revision 1.11
1 /* $NetBSD: ata_wdc.c,v 1.11 1999/01/08 18:10:35 augustss 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 = 0; 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_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 (char *)xfer->databuf + xfer->c_skip, 268 ata_bio->nbytes, 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 if (wait_for_drq(chp, ATA_DELAY) != 0) { 316 printf("%s:%d:%d: timeout waiting for DRQ, " 317 "st=0x%02x, err=0x%02x\n", 318 chp->wdc->sc_dev.dv_xname, chp->channel, 319 xfer->drive, chp->ch_status, chp->ch_error); 320 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 321 ata_bio->error = TIMEOUT; 322 wdc_ata_bio_done(chp, xfer); 323 return; 324 } 325 if (wdc_ata_err(chp, ata_bio) == WDC_ATA_ERR) { 326 wdc_ata_bio_done(chp, xfer); 327 return; 328 } 329 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 330 if (drvp->drive_flags & DRIVE_CAP32) { 331 bus_space_write_multi_4(chp->data32iot, 332 chp->data32ioh, 0, 333 (char *)xfer->databuf + xfer->c_skip, 334 ata_bio->nbytes >> 2); 335 } else { 336 bus_space_write_multi_2(chp->cmd_iot, 337 chp->cmd_ioh, wd_data, 338 (char *)xfer->databuf + xfer->c_skip, 339 ata_bio->nbytes >> 1); 340 } 341 } else { 342 if (drvp->drive_flags & DRIVE_CAP32) { 343 bus_space_write_multi_stream_4(chp->data32iot, 344 chp->data32ioh, 0, 345 (char *)xfer->databuf + xfer->c_skip, 346 ata_bio->nbytes >> 2); 347 } else { 348 bus_space_write_multi_stream_2(chp->cmd_iot, 349 chp->cmd_ioh, wd_data, 350 (char *)xfer->databuf + xfer->c_skip, 351 ata_bio->nbytes >> 1); 352 } 353 } 354 } 355 356 intr: /* Wait for IRQ (either real or polled) */ 357 if ((ata_bio->flags & ATA_POLL) == 0) { 358 chp->ch_flags |= WDCF_IRQ_WAIT; 359 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 360 } else { 361 /* Wait for at last 400ns for status bit to be valid */ 362 delay(1); 363 wdc_ata_bio_intr(chp, xfer); 364 if ((ata_bio->flags & ATA_ITSDONE) == 0) 365 goto again; 366 } 367 return; 368 timeout: 369 printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", 370 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 371 chp->ch_status, chp->ch_error); 372 if (wdc_ata_err(chp, ata_bio) != WDC_ATA_ERR) 373 ata_bio->error = TIMEOUT; 374 wdc_ata_bio_done(chp, xfer); 375 return; 376 } 377 378 int 379 wdc_ata_bio_intr(chp, xfer) 380 struct channel_softc *chp; 381 struct wdc_xfer *xfer; 382 { 383 struct ata_bio *ata_bio = xfer->cmd; 384 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 385 int drv_err; 386 int dma_flags = 0; 387 388 WDCDEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", 389 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 390 DEBUG_INTR | DEBUG_XFERS); 391 392 393 /* Is it not a transfer, but a control operation? */ 394 if (drvp->state < READY) { 395 printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", 396 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 397 drvp->state); 398 panic("wdc_ata_bio_intr: bad state\n"); 399 } 400 401 if (xfer->c_flags & C_DMA) { 402 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 403 dma_flags |= (ata_bio->flags & ATA_POLL) ? WDC_DMA_POLL : 0; 404 } 405 406 /* Ack interrupt done by wait_for_unbusy */ 407 if (wait_for_unbusy(chp, ATA_DELAY) < 0) { 408 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 409 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 410 xfer->c_bcount, xfer->c_skip); 411 /* if we were using DMA, turn off DMA channel */ 412 if (xfer->c_flags & C_DMA) { 413 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 414 chp->channel, xfer->drive, dma_flags); 415 drvp->n_dmaerrs++; 416 } 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 transfert 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 transfers, 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 transfer 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 drv_err = WDC_ATA_ERR; 440 } 441 } 442 if ((*chp->wdc->dma_finish)(chp->wdc->dma_arg, 443 chp->channel, xfer->drive, dma_flags) != 0) { 444 if (drv_err != WDC_ATA_ERR) { 445 ata_bio->error = ERR_DMA; 446 drv_err = WDC_ATA_ERR; 447 } 448 } 449 if (chp->ch_status & WDCS_DRQ) { 450 if (drv_err != WDC_ATA_ERR) { 451 printf("%s:%d:%d: intr with DRQ (st=0x%x)\n", 452 chp->wdc->sc_dev.dv_xname, chp->channel, 453 xfer->drive, chp->ch_status); 454 ata_bio->error = TIMEOUT; 455 drv_err = WDC_ATA_ERR; 456 } 457 } 458 if (drv_err != WDC_ATA_ERR) 459 goto end; 460 drvp->n_dmaerrs++; 461 } 462 463 /* if we had an error, end */ 464 if (drv_err == WDC_ATA_ERR) { 465 wdc_ata_bio_done(chp, xfer); 466 return 1; 467 } 468 469 /* If this was a read and not using DMA, fetch the data. */ 470 if ((ata_bio->flags & ATA_READ) != 0) { 471 if ((chp->ch_status & (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) != 472 (WDCS_DRDY | WDCS_DSC | WDCS_DRQ)) { 473 printf("%s:%d:%d: read intr before drq\n", 474 chp->wdc->sc_dev.dv_xname, chp->channel, 475 xfer->drive); 476 ata_bio->error = TIMEOUT; 477 wdc_ata_bio_done(chp, xfer); 478 return 1; 479 } 480 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 481 if (drvp->drive_flags & DRIVE_CAP32) { 482 bus_space_read_multi_4(chp->data32iot, 483 chp->data32ioh, 0, 484 (char *)xfer->databuf + xfer->c_skip, 485 ata_bio->nbytes >> 2); 486 } else { 487 bus_space_read_multi_2(chp->cmd_iot, 488 chp->cmd_ioh, wd_data, 489 (char *)xfer->databuf + xfer->c_skip, 490 ata_bio->nbytes >> 1); 491 } 492 } else { 493 if (drvp->drive_flags & DRIVE_CAP32) { 494 bus_space_read_multi_stream_4(chp->data32iot, 495 chp->data32ioh, 0, 496 (char *)xfer->databuf + xfer->c_skip, 497 ata_bio->nbytes >> 2); 498 } else { 499 bus_space_read_multi_stream_2(chp->cmd_iot, 500 chp->cmd_ioh, wd_data, 501 (char *)xfer->databuf + xfer->c_skip, 502 ata_bio->nbytes >> 1); 503 } 504 } 505 } 506 507 end: 508 ata_bio->blkno += ata_bio->nblks; 509 ata_bio->blkdone += ata_bio->nblks; 510 xfer->c_skip += ata_bio->nbytes; 511 xfer->c_bcount -= ata_bio->nbytes; 512 /* See if this transfer is complete. */ 513 if (xfer->c_bcount > 0) { 514 if ((ata_bio->flags & ATA_POLL) == 0) { 515 /* Start the next operation */ 516 wdc_ata_bio_start(chp, xfer); 517 } else { 518 /* Let wdc_ata_bio_start do the loop */ 519 return 1; 520 } 521 } else { /* Done with this transfer */ 522 ata_bio->error = NOERROR; 523 wdc_ata_bio_done(chp, xfer); 524 } 525 return 1; 526 } 527 528 void 529 wdc_ata_bio_done(chp, xfer) 530 struct channel_softc *chp; 531 struct wdc_xfer *xfer; 532 { 533 struct ata_bio *ata_bio = xfer->cmd; 534 int need_done = xfer->c_flags & C_NEEDDONE; 535 int drive = xfer->drive; 536 struct ata_drive_datas *drvp = &chp->ch_drive[drive]; 537 538 WDCDEBUG_PRINT(("wdc_ata_bio_done %s:%d:%d: flags 0x%x\n", 539 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 540 (u_int)xfer->c_flags), 541 DEBUG_XFERS); 542 543 if (ata_bio->error == NOERROR) 544 drvp->n_dmaerrs = 0; 545 else if (drvp->n_dmaerrs >= NERRS_MAX) { 546 wdc_downgrade_mode(drvp); 547 } 548 549 /* feed back residual bcount to our caller */ 550 ata_bio->bcount = xfer->c_bcount; 551 552 /* remove this command from xfer queue */ 553 wdc_free_xfer(chp, xfer); 554 555 ata_bio->flags |= ATA_ITSDONE; 556 if (need_done) { 557 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); 558 wddone(chp->ch_drive[drive].drv_softc); 559 } 560 WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", 561 chp->ch_flags), DEBUG_XFERS); 562 wdcstart(chp); 563 } 564 565 /* 566 * Implement operations needed before read/write. 567 */ 568 int 569 wdc_ata_ctrl_intr(chp, xfer) 570 struct channel_softc *chp; 571 struct wdc_xfer *xfer; 572 { 573 struct ata_bio *ata_bio = xfer->cmd; 574 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 575 char *errstring = NULL; 576 WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), 577 DEBUG_FUNCS); 578 579 again: 580 switch (drvp->state) { 581 case RECAL: /* Should not be in this state here */ 582 panic("wdc_ata_ctrl_intr: state==RECAL"); 583 break; 584 585 case RECAL_WAIT: 586 errstring = "recal"; 587 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 588 goto timeout; 589 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 590 goto error; 591 /* fall through */ 592 593 case PIOMODE: 594 /* Don't try to set modes if controller can't be adjusted */ 595 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 596 goto geometry; 597 /* Also don't try if the drive didn't report its mode */ 598 if ((drvp->drive_flags & DRIVE_MODE) == 0) 599 goto geometry; 600 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 601 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 602 drvp->state = PIOMODE_WAIT; 603 break; 604 605 case PIOMODE_WAIT: 606 errstring = "piomode"; 607 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 608 goto timeout; 609 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 610 goto error; 611 /* fall through */ 612 613 case DMAMODE: 614 if (drvp->drive_flags & DRIVE_UDMA) { 615 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 616 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 617 } else if (drvp->drive_flags & DRIVE_DMA) { 618 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 619 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 620 } else { 621 goto geometry; 622 } 623 drvp->state = DMAMODE_WAIT; 624 break; 625 case DMAMODE_WAIT: 626 errstring = "dmamode"; 627 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 628 goto timeout; 629 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 630 goto error; 631 /* fall through */ 632 633 case GEOMETRY: 634 geometry: 635 if (ata_bio->flags & ATA_LBA) 636 goto multimode; 637 wdccommand(chp, xfer->drive, WDCC_IDP, 638 ata_bio->lp->d_ncylinders, 639 ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, 640 (ata_bio->lp->d_type == DTYPE_ST506) ? 641 ata_bio->lp->d_precompcyl / 4 : 0); 642 drvp->state = GEOMETRY_WAIT; 643 break; 644 645 case GEOMETRY_WAIT: 646 errstring = "geometry"; 647 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 648 goto timeout; 649 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 650 goto error; 651 /* fall through */ 652 653 case MULTIMODE: 654 multimode: 655 if (ata_bio->multi == 1) 656 goto ready; 657 wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, 658 ata_bio->multi, 0); 659 drvp->state = MULTIMODE_WAIT; 660 break; 661 662 case MULTIMODE_WAIT: 663 errstring = "setmulti"; 664 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY)) 665 goto timeout; 666 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 667 goto error; 668 /* fall through */ 669 670 case READY: 671 ready: 672 drvp->state = READY; 673 /* 674 * The drive is usable now 675 */ 676 xfer->c_intr = wdc_ata_bio_intr; 677 wdc_ata_bio_start(chp, xfer); 678 return 1; 679 } 680 681 if ((ata_bio->flags & ATA_POLL) == 0) { 682 chp->ch_flags |= WDCF_IRQ_WAIT; 683 timeout(wdctimeout, chp, ATA_DELAY / 1000 * hz); 684 } else { 685 goto again; 686 } 687 return 1; 688 689 timeout: 690 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 691 return 0; /* IRQ was not for us */ 692 } 693 printf("%s:%d:%d: %s timed out\n", 694 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 695 ata_bio->error = TIMEOUT; 696 drvp->state = 0; 697 wdc_ata_bio_done(chp, xfer); 698 return 0; 699 error: 700 printf("%s:%d:%d: %s ", 701 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 702 errstring); 703 if (chp->ch_status & WDCS_DWF) { 704 printf("drive fault\n"); 705 ata_bio->error = ERR_DF; 706 } else { 707 printf("error (%x)\n", chp->ch_error); 708 ata_bio->r_error = chp->ch_error; 709 ata_bio->error = ERROR; 710 } 711 drvp->state = 0; 712 wdc_ata_bio_done(chp, xfer); 713 return 1; 714 } 715 716 int 717 wdc_ata_err(chp, ata_bio) 718 struct channel_softc *chp; 719 struct ata_bio *ata_bio; 720 { 721 ata_bio->error = 0; 722 if (chp->ch_status & WDCS_BSY) { 723 ata_bio->error = TIMEOUT; 724 return WDC_ATA_ERR; 725 } 726 727 if (chp->ch_status & WDCS_DWF) { 728 ata_bio->error = ERR_DF; 729 return WDC_ATA_ERR; 730 } 731 732 if (chp->ch_status & WDCS_ERR) { 733 ata_bio->error = ERROR; 734 ata_bio->r_error = chp->ch_error; 735 if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | 736 WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) 737 return WDC_ATA_ERR; 738 return WDC_ATA_NOERR; 739 } 740 741 if (chp->ch_status & WDCS_CORR) 742 ata_bio->flags |= ATA_CORR; 743 return WDC_ATA_NOERR; 744 } 745 746 int 747 wdc_ata_addref(drvp) 748 struct ata_drive_datas *drvp; 749 { 750 struct channel_softc *chp = drvp->chnl_softc; 751 752 return (wdc_addref(chp)); 753 } 754 755 void 756 wdc_ata_delref(drvp) 757 struct ata_drive_datas *drvp; 758 { 759 struct channel_softc *chp = drvp->chnl_softc; 760 761 wdc_delref(chp); 762 } 763
Indexes created Mon Sep 29 21:09:56 GMT 2025