ata_wdc.c revision 1.16
1 /* $NetBSD: ata_wdc.c,v 1.16 1999/03/07 14:02:53 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 #ifndef WDCDEBUG 73 #define WDCDEBUG 74 #endif /* WDCDEBUG */ 75 76 #include <sys/param.h> 77 #include <sys/systm.h> 78 #include <sys/kernel.h> 79 #include <sys/file.h> 80 #include <sys/stat.h> 81 #include <sys/buf.h> 82 #include <sys/malloc.h> 83 #include <sys/device.h> 84 #include <sys/disklabel.h> 85 #include <sys/syslog.h> 86 #include <sys/proc.h> 87 88 #include <machine/intr.h> 89 #include <machine/bus.h> 90 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 91 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 92 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 93 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 94 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 95 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 96 97 #include <dev/ata/atareg.h> 98 #include <dev/ata/atavar.h> 99 #include <dev/ic/wdcreg.h> 100 #include <dev/ic/wdcvar.h> 101 #include <dev/ata/wdvar.h> 102 103 #define DEBUG_INTR 0x01 104 #define DEBUG_XFERS 0x02 105 #define DEBUG_STATUS 0x04 106 #define DEBUG_FUNCS 0x08 107 #define DEBUG_PROBE 0x10 108 #ifdef WDCDEBUG 109 int wdcdebug_wd_mask = 0; 110 #define WDCDEBUG_PRINT(args, level) \ 111 if (wdcdebug_wd_mask & (level)) \ 112 printf args 113 #else 114 #define WDCDEBUG_PRINT(args, level) 115 #endif 116 117 #define ATA_DELAY_NORMAL 1000 /* 1s for a normal drive I/O */ 118 #define ATA_DELAY_RECOVERY 10000 /* 10s for setup or recovery drive I/O */ 119 120 void wdc_ata_bio_start __P((struct channel_softc *,struct wdc_xfer *)); 121 int wdc_ata_bio_intr __P((struct channel_softc *, struct wdc_xfer *)); 122 void wdc_ata_bio_done __P((struct channel_softc *, struct wdc_xfer *)); 123 int wdc_ata_ctrl_intr __P((struct channel_softc *, struct wdc_xfer *)); 124 int wdc_ata_err __P((struct ata_drive_datas *, struct ata_bio *)); 125 #define WDC_ATA_NOERR 0x00 /* Drive doesn't report an error */ 126 #define WDC_ATA_RECOV 0x01 /* There was a recovered error */ 127 #define WDC_ATA_ERR 0x02 /* Drive reports an error */ 128 129 /* 130 * Handle block I/O operation. Return WDC_COMPLETE, WDC_QUEUED, or 131 * WDC_TRY_AGAIN. Must be called at splio(). 132 */ 133 int 134 wdc_ata_bio(drvp, ata_bio) 135 struct ata_drive_datas *drvp; 136 struct ata_bio *ata_bio; 137 { 138 struct wdc_xfer *xfer; 139 struct channel_softc *chp = drvp->chnl_softc; 140 141 xfer = wdc_get_xfer(WDC_NOSLEEP); 142 if (xfer == NULL) 143 return WDC_TRY_AGAIN; 144 if (ata_bio->flags & ATA_POLL) 145 xfer->c_flags |= C_POLL; 146 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 147 (ata_bio->flags & ATA_SINGLE) == 0) 148 xfer->c_flags |= C_DMA; 149 xfer->drive = drvp->drive; 150 xfer->cmd = ata_bio; 151 xfer->databuf = ata_bio->databuf; 152 xfer->c_bcount = ata_bio->bcount; 153 xfer->c_start = wdc_ata_bio_start; 154 xfer->c_intr = wdc_ata_bio_intr; 155 wdc_exec_xfer(chp, xfer); 156 return (ata_bio->flags & ATA_ITSDONE) ? WDC_COMPLETE : WDC_QUEUED; 157 } 158 159 void 160 wdc_ata_bio_start(chp, xfer) 161 struct channel_softc *chp; 162 struct wdc_xfer *xfer; 163 { 164 struct ata_bio *ata_bio = xfer->cmd; 165 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 166 u_int16_t cyl; 167 u_int8_t head, sect, cmd = 0; 168 int nblks; 169 int ata_delay; 170 int dma_flags = 0; 171 172 WDCDEBUG_PRINT(("wdc_ata_bio_start %s:%d:%d\n", 173 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 174 DEBUG_XFERS); 175 176 /* Do control operations specially. */ 177 if (drvp->state < READY) { 178 /* 179 * Actually, we want to be careful not to mess with the control 180 * state if the device is currently busy, but we can assume 181 * that we never get to this point if that's the case. 182 */ 183 /* at this point, we should only be in RECAL state */ 184 if (drvp->state != RECAL) { 185 printf("%s:%d:%d: bad state %d in wdc_ata_bio_start\n", 186 chp->wdc->sc_dev.dv_xname, chp->channel, 187 xfer->drive, drvp->state); 188 panic("wdc_ata_bio_start: bad state"); 189 } 190 xfer->c_intr = wdc_ata_ctrl_intr; 191 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 192 WDSD_IBM | (xfer->drive << 4)); 193 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY) != 0) 194 goto timeout; 195 wdccommandshort(chp, xfer->drive, WDCC_RECAL); 196 drvp->state = RECAL_WAIT; 197 if ((ata_bio->flags & ATA_POLL) == 0) { 198 chp->ch_flags |= WDCF_IRQ_WAIT; 199 timeout(wdctimeout, chp, 200 ATA_DELAY_RECOVERY / 1000 * hz); 201 } else { 202 /* Wait for at last 400ns for status bit to be valid */ 203 delay(1); 204 wdc_ata_ctrl_intr(chp, xfer); 205 } 206 return; 207 } 208 209 if (xfer->c_flags & C_DMA) { 210 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 211 dma_flags |= (ata_bio->flags & ATA_POLL) ? WDC_DMA_POLL : 0; 212 } 213 if (ata_bio->flags & ATA_SINGLE) 214 ata_delay = ATA_DELAY_RECOVERY; 215 else 216 ata_delay = ATA_DELAY_NORMAL; 217 again: 218 /* 219 * 220 * When starting a multi-sector transfer, or doing single-sector 221 * transfers... 222 */ 223 if (xfer->c_skip == 0 || (ata_bio->flags & ATA_SINGLE) != 0) { 224 if (ata_bio->flags & ATA_SINGLE) 225 nblks = 1; 226 else 227 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 228 /* Check for bad sectors and adjust transfer, if necessary. */ 229 if ((ata_bio->lp->d_flags & D_BADSECT) != 0) { 230 long blkdiff; 231 int i; 232 for (i = 0; (blkdiff = ata_bio->badsect[i]) != -1; 233 i++) { 234 blkdiff -= ata_bio->blkno; 235 if (blkdiff < 0) 236 continue; 237 if (blkdiff == 0) { 238 /* Replace current block of transfer. */ 239 ata_bio->blkno = 240 ata_bio->lp->d_secperunit - 241 ata_bio->lp->d_nsectors - i - 1; 242 } 243 if (blkdiff < nblks) { 244 /* Bad block inside transfer. */ 245 ata_bio->flags |= ATA_SINGLE; 246 nblks = 1; 247 } 248 break; 249 } 250 /* Transfer is okay now. */ 251 } 252 if (ata_bio->flags & ATA_LBA) { 253 sect = (ata_bio->blkno >> 0) & 0xff; 254 cyl = (ata_bio->blkno >> 8) & 0xffff; 255 head = (ata_bio->blkno >> 24) & 0x0f; 256 head |= WDSD_LBA; 257 } else { 258 int blkno = ata_bio->blkno; 259 sect = blkno % ata_bio->lp->d_nsectors; 260 sect++; /* Sectors begin with 1, not 0. */ 261 blkno /= ata_bio->lp->d_nsectors; 262 head = blkno % ata_bio->lp->d_ntracks; 263 blkno /= ata_bio->lp->d_ntracks; 264 cyl = blkno; 265 head |= WDSD_CHS; 266 } 267 if (xfer->c_flags & C_DMA) { 268 ata_bio->nblks = nblks; 269 ata_bio->nbytes = xfer->c_bcount; 270 cmd = (ata_bio->flags & ATA_READ) ? 271 WDCC_READDMA : WDCC_WRITEDMA; 272 nblks = ata_bio->nblks; 273 /* Init the DMA channel. */ 274 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 275 chp->channel, xfer->drive, 276 (char *)xfer->databuf + xfer->c_skip, 277 ata_bio->nbytes, dma_flags) != 0) { 278 ata_bio->error = ERR_DMA; 279 ata_bio->r_error = 0; 280 wdc_ata_bio_done(chp, xfer); 281 return; 282 } 283 /* Initiate command */ 284 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 285 WDSD_IBM | (xfer->drive << 4)); 286 if (wait_for_ready(chp, ata_delay) < 0) 287 goto timeout; 288 wdccommand(chp, xfer->drive, cmd, cyl, 289 head, sect, nblks, 0); 290 /* start the DMA channel */ 291 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 292 chp->channel, xfer->drive, dma_flags); 293 /* wait for irq */ 294 goto intr; 295 } /* else not DMA */ 296 ata_bio->nblks = min(nblks, ata_bio->multi); 297 ata_bio->nbytes = ata_bio->nblks * ata_bio->lp->d_secsize; 298 if (ata_bio->nblks > 1 && (ata_bio->flags & ATA_SINGLE) == 0) { 299 cmd = (ata_bio->flags & ATA_READ) ? 300 WDCC_READMULTI : WDCC_WRITEMULTI; 301 } else { 302 cmd = (ata_bio->flags & ATA_READ) ? 303 WDCC_READ : WDCC_WRITE; 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, 312 (ata_bio->lp->d_type == DTYPE_ST506) ? 313 ata_bio->lp->d_precompcyl / 4 : 0); 314 } else if (ata_bio->nblks > 1) { 315 /* The number of blocks in the last stretch may be smaller. */ 316 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 317 if (ata_bio->nblks > nblks) { 318 ata_bio->nblks = nblks; 319 ata_bio->nbytes = xfer->c_bcount; 320 } 321 } 322 /* If this was a write and not using DMA, push the data. */ 323 if ((ata_bio->flags & ATA_READ) == 0) { 324 if (wait_for_drq(chp, ata_delay) != 0) { 325 printf("%s:%d:%d: timeout waiting for DRQ, " 326 "st=0x%02x, err=0x%02x\n", 327 chp->wdc->sc_dev.dv_xname, chp->channel, 328 xfer->drive, chp->ch_status, chp->ch_error); 329 if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) 330 ata_bio->error = TIMEOUT; 331 wdc_ata_bio_done(chp, xfer); 332 return; 333 } 334 if (wdc_ata_err(drvp, ata_bio) == WDC_ATA_ERR) { 335 wdc_ata_bio_done(chp, xfer); 336 return; 337 } 338 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 339 if (drvp->drive_flags & DRIVE_CAP32) { 340 bus_space_write_multi_4(chp->data32iot, 341 chp->data32ioh, 0, 342 (u_int32_t *)((char *)xfer->databuf + 343 xfer->c_skip), 344 ata_bio->nbytes >> 2); 345 } else { 346 bus_space_write_multi_2(chp->cmd_iot, 347 chp->cmd_ioh, wd_data, 348 (u_int16_t *)((char *)xfer->databuf + 349 xfer->c_skip), 350 ata_bio->nbytes >> 1); 351 } 352 } else { 353 if (drvp->drive_flags & DRIVE_CAP32) { 354 bus_space_write_multi_stream_4(chp->data32iot, 355 chp->data32ioh, 0, 356 (u_int32_t *)((char *)xfer->databuf + 357 xfer->c_skip), 358 ata_bio->nbytes >> 2); 359 } else { 360 bus_space_write_multi_stream_2(chp->cmd_iot, 361 chp->cmd_ioh, wd_data, 362 (u_int16_t *)((char *)xfer->databuf + 363 xfer->c_skip), 364 ata_bio->nbytes >> 1); 365 } 366 } 367 } 368 369 intr: /* Wait for IRQ (either real or polled) */ 370 if ((ata_bio->flags & ATA_POLL) == 0) { 371 chp->ch_flags |= WDCF_IRQ_WAIT; 372 timeout(wdctimeout, chp, ata_delay / 1000 * hz); 373 } else { 374 /* Wait for at last 400ns for status bit to be valid */ 375 delay(1); 376 wdc_ata_bio_intr(chp, xfer); 377 if ((ata_bio->flags & ATA_ITSDONE) == 0) 378 goto again; 379 } 380 return; 381 timeout: 382 printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", 383 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 384 chp->ch_status, chp->ch_error); 385 if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) 386 ata_bio->error = TIMEOUT; 387 wdc_ata_bio_done(chp, xfer); 388 return; 389 } 390 391 int 392 wdc_ata_bio_intr(chp, xfer) 393 struct channel_softc *chp; 394 struct wdc_xfer *xfer; 395 { 396 struct ata_bio *ata_bio = xfer->cmd; 397 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 398 int drv_err; 399 int dma_flags = 0; 400 401 WDCDEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", 402 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 403 DEBUG_INTR | DEBUG_XFERS); 404 405 406 /* Is it not a transfer, but a control operation? */ 407 if (drvp->state < READY) { 408 printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", 409 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 410 drvp->state); 411 panic("wdc_ata_bio_intr: bad state\n"); 412 } 413 414 if (xfer->c_flags & C_DMA) { 415 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 416 dma_flags |= (ata_bio->flags & ATA_POLL) ? WDC_DMA_POLL : 0; 417 } 418 419 /* Ack interrupt done by wait_for_unbusy */ 420 if (wait_for_unbusy(chp, ATA_DELAY_NORMAL) < 0) { 421 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 422 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 423 xfer->c_bcount, xfer->c_skip); 424 /* if we were using DMA, turn off DMA channel */ 425 if (xfer->c_flags & C_DMA) { 426 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 427 chp->channel, xfer->drive, dma_flags); 428 drvp->n_dmaerrs++; 429 } 430 ata_bio->error = TIMEOUT; 431 wdc_ata_bio_done(chp, xfer); 432 return 1; 433 } 434 435 drv_err = wdc_ata_err(drvp, ata_bio); 436 437 /* If we were using DMA, Turn off the DMA channel and check for error */ 438 if (xfer->c_flags & C_DMA) { 439 if (ata_bio->flags & ATA_POLL) { 440 /* 441 * IDE drives deassert WDCS_BSY before transfer is 442 * complete when using DMA. Polling for DRQ to deassert 443 * is not enouth DRQ is not required to be 444 * asserted for DMA transfers, so poll for DRDY. 445 */ 446 if (wdcwait(chp, WDCS_DRDY | WDCS_DRQ, WDCS_DRDY, 447 ATA_DELAY_NORMAL) < 0) { 448 printf("%s:%d:%d: polled transfer timed out " 449 "(st=0x%x)\n", chp->wdc->sc_dev.dv_xname, 450 chp->channel, xfer->drive, chp->ch_status); 451 ata_bio->error = TIMEOUT; 452 drv_err = WDC_ATA_ERR; 453 } 454 } 455 if ((*chp->wdc->dma_finish)(chp->wdc->dma_arg, 456 chp->channel, xfer->drive, dma_flags) != 0) { 457 if (drv_err != WDC_ATA_ERR) { 458 ata_bio->error = ERR_DMA; 459 drv_err = WDC_ATA_ERR; 460 } 461 } 462 if (chp->ch_status & WDCS_DRQ) { 463 if (drv_err != WDC_ATA_ERR) { 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 drv_err = WDC_ATA_ERR; 469 } 470 } 471 if (drv_err != WDC_ATA_ERR) 472 goto end; 473 drvp->n_dmaerrs++; 474 } 475 476 /* if we had an error, end */ 477 if (drv_err == WDC_ATA_ERR) { 478 wdc_ata_bio_done(chp, xfer); 479 return 1; 480 } 481 482 /* If this was a read and not using DMA, fetch the data. */ 483 if ((ata_bio->flags & ATA_READ) != 0) { 484 if ((chp->ch_status & WDCS_DRQ) != WDCS_DRQ) { 485 printf("%s:%d:%d: read intr before drq\n", 486 chp->wdc->sc_dev.dv_xname, chp->channel, 487 xfer->drive); 488 ata_bio->error = TIMEOUT; 489 wdc_ata_bio_done(chp, xfer); 490 return 1; 491 } 492 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 493 if (drvp->drive_flags & DRIVE_CAP32) { 494 bus_space_read_multi_4(chp->data32iot, 495 chp->data32ioh, 0, 496 (u_int32_t *)((char *)xfer->databuf + 497 xfer->c_skip), 498 ata_bio->nbytes >> 2); 499 } else { 500 bus_space_read_multi_2(chp->cmd_iot, 501 chp->cmd_ioh, wd_data, 502 (u_int16_t *)((char *)xfer->databuf + 503 xfer->c_skip), 504 ata_bio->nbytes >> 1); 505 } 506 } else { 507 if (drvp->drive_flags & DRIVE_CAP32) { 508 bus_space_read_multi_stream_4(chp->data32iot, 509 chp->data32ioh, 0, 510 (u_int32_t *)((char *)xfer->databuf + 511 xfer->c_skip), 512 ata_bio->nbytes >> 2); 513 } else { 514 bus_space_read_multi_stream_2(chp->cmd_iot, 515 chp->cmd_ioh, wd_data, 516 (u_int16_t *)((char *)xfer->databuf + 517 xfer->c_skip), 518 ata_bio->nbytes >> 1); 519 } 520 } 521 } 522 523 end: 524 ata_bio->blkno += ata_bio->nblks; 525 ata_bio->blkdone += ata_bio->nblks; 526 xfer->c_skip += ata_bio->nbytes; 527 xfer->c_bcount -= ata_bio->nbytes; 528 /* See if this transfer is complete. */ 529 if (xfer->c_bcount > 0) { 530 if ((ata_bio->flags & ATA_POLL) == 0) { 531 /* Start the next operation */ 532 wdc_ata_bio_start(chp, xfer); 533 } else { 534 /* Let wdc_ata_bio_start do the loop */ 535 return 1; 536 } 537 } else { /* Done with this transfer */ 538 ata_bio->error = NOERROR; 539 wdc_ata_bio_done(chp, xfer); 540 } 541 return 1; 542 } 543 544 void 545 wdc_ata_bio_done(chp, xfer) 546 struct channel_softc *chp; 547 struct wdc_xfer *xfer; 548 { 549 struct ata_bio *ata_bio = xfer->cmd; 550 int need_done = xfer->c_flags & C_NEEDDONE; 551 int drive = xfer->drive; 552 struct ata_drive_datas *drvp = &chp->ch_drive[drive]; 553 554 WDCDEBUG_PRINT(("wdc_ata_bio_done %s:%d:%d: flags 0x%x\n", 555 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 556 (u_int)xfer->c_flags), 557 DEBUG_XFERS); 558 559 if (ata_bio->error == NOERROR) 560 drvp->n_dmaerrs = 0; 561 else if (drvp->n_dmaerrs >= NERRS_MAX) { 562 wdc_downgrade_mode(drvp); 563 } 564 565 /* feed back residual bcount to our caller */ 566 ata_bio->bcount = xfer->c_bcount; 567 568 /* remove this command from xfer queue */ 569 wdc_free_xfer(chp, xfer); 570 571 ata_bio->flags |= ATA_ITSDONE; 572 if (need_done) { 573 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); 574 wddone(chp->ch_drive[drive].drv_softc); 575 } 576 WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", 577 chp->ch_flags), DEBUG_XFERS); 578 wdcstart(chp); 579 } 580 581 /* 582 * Implement operations needed before read/write. 583 */ 584 int 585 wdc_ata_ctrl_intr(chp, xfer) 586 struct channel_softc *chp; 587 struct wdc_xfer *xfer; 588 { 589 struct ata_bio *ata_bio = xfer->cmd; 590 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 591 char *errstring = NULL; 592 WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), 593 DEBUG_FUNCS); 594 595 again: 596 switch (drvp->state) { 597 case RECAL: /* Should not be in this state here */ 598 panic("wdc_ata_ctrl_intr: state==RECAL"); 599 break; 600 601 case RECAL_WAIT: 602 errstring = "recal"; 603 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY)) 604 goto timeout; 605 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 606 goto error; 607 /* fall through */ 608 609 case PIOMODE: 610 /* Don't try to set modes if controller can't be adjusted */ 611 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 612 goto geometry; 613 /* Also don't try if the drive didn't report its mode */ 614 if ((drvp->drive_flags & DRIVE_MODE) == 0) 615 goto geometry; 616 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 617 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 618 drvp->state = PIOMODE_WAIT; 619 break; 620 621 case PIOMODE_WAIT: 622 errstring = "piomode"; 623 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY)) 624 goto timeout; 625 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 626 goto error; 627 /* fall through */ 628 629 case DMAMODE: 630 if (drvp->drive_flags & DRIVE_UDMA) { 631 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 632 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 633 } else if (drvp->drive_flags & DRIVE_DMA) { 634 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 635 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 636 } else { 637 goto geometry; 638 } 639 drvp->state = DMAMODE_WAIT; 640 break; 641 case DMAMODE_WAIT: 642 errstring = "dmamode"; 643 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY)) 644 goto timeout; 645 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 646 goto error; 647 /* fall through */ 648 649 case GEOMETRY: 650 geometry: 651 if (ata_bio->flags & ATA_LBA) 652 goto multimode; 653 wdccommand(chp, xfer->drive, WDCC_IDP, 654 ata_bio->lp->d_ncylinders, 655 ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, 656 (ata_bio->lp->d_type == DTYPE_ST506) ? 657 ata_bio->lp->d_precompcyl / 4 : 0); 658 drvp->state = GEOMETRY_WAIT; 659 break; 660 661 case GEOMETRY_WAIT: 662 errstring = "geometry"; 663 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY)) 664 goto timeout; 665 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 666 goto error; 667 /* fall through */ 668 669 case MULTIMODE: 670 multimode: 671 if (ata_bio->multi == 1) 672 goto ready; 673 wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, 674 ata_bio->multi, 0); 675 drvp->state = MULTIMODE_WAIT; 676 break; 677 678 case MULTIMODE_WAIT: 679 errstring = "setmulti"; 680 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY_RECOVERY)) 681 goto timeout; 682 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 683 goto error; 684 /* fall through */ 685 686 case READY: 687 ready: 688 drvp->state = READY; 689 /* 690 * The drive is usable now 691 */ 692 xfer->c_intr = wdc_ata_bio_intr; 693 wdc_ata_bio_start(chp, xfer); 694 return 1; 695 } 696 697 if ((ata_bio->flags & ATA_POLL) == 0) { 698 chp->ch_flags |= WDCF_IRQ_WAIT; 699 timeout(wdctimeout, chp, ATA_DELAY_RECOVERY / 1000 * hz); 700 } else { 701 goto again; 702 } 703 return 1; 704 705 timeout: 706 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 707 return 0; /* IRQ was not for us */ 708 } 709 printf("%s:%d:%d: %s timed out\n", 710 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 711 ata_bio->error = TIMEOUT; 712 drvp->state = 0; 713 wdc_ata_bio_done(chp, xfer); 714 return 0; 715 error: 716 printf("%s:%d:%d: %s ", 717 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 718 errstring); 719 if (chp->ch_status & WDCS_DWF) { 720 printf("drive fault\n"); 721 ata_bio->error = ERR_DF; 722 } else { 723 printf("error (%x)\n", chp->ch_error); 724 ata_bio->r_error = chp->ch_error; 725 ata_bio->error = ERROR; 726 } 727 drvp->state = 0; 728 wdc_ata_bio_done(chp, xfer); 729 return 1; 730 } 731 732 int 733 wdc_ata_err(drvp, ata_bio) 734 struct ata_drive_datas *drvp; 735 struct ata_bio *ata_bio; 736 { 737 struct channel_softc *chp = drvp->chnl_softc; 738 ata_bio->error = 0; 739 if (chp->ch_status & WDCS_BSY) { 740 ata_bio->error = TIMEOUT; 741 return WDC_ATA_ERR; 742 } 743 744 if (chp->ch_status & WDCS_DWF) { 745 ata_bio->error = ERR_DF; 746 return WDC_ATA_ERR; 747 } 748 749 if (chp->ch_status & WDCS_ERR) { 750 ata_bio->error = ERROR; 751 ata_bio->r_error = chp->ch_error; 752 if (drvp->drive_flags & DRIVE_UDMA && 753 (ata_bio->r_error & WDCE_CRC)) { 754 /* 755 * Record the CRC error, to avoid downgrading to 756 * multiword DMA 757 */ 758 drvp->drive_flags |= DRIVE_DMAERR; 759 } 760 if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | 761 WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) 762 return WDC_ATA_ERR; 763 return WDC_ATA_NOERR; 764 } 765 766 if (chp->ch_status & WDCS_CORR) 767 ata_bio->flags |= ATA_CORR; 768 return WDC_ATA_NOERR; 769 } 770 771 int 772 wdc_ata_addref(drvp) 773 struct ata_drive_datas *drvp; 774 { 775 struct channel_softc *chp = drvp->chnl_softc; 776 777 return (wdc_addref(chp)); 778 } 779 780 void 781 wdc_ata_delref(drvp) 782 struct ata_drive_datas *drvp; 783 { 784 struct channel_softc *chp = drvp->chnl_softc; 785 786 wdc_delref(chp); 787 } 788
Indexes created Mon Sep 29 15:09:53 GMT 2025