ata_wdc.c revision 1.33
1 /* $NetBSD: ata_wdc.c,v 1.33 2001/12/03 00:20:23 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 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 AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 /*- 36 * Copyright (c) 1998 The NetBSD Foundation, Inc. 37 * All rights reserved. 38 * 39 * This code is derived from software contributed to The NetBSD Foundation 40 * by Charles M. Hannum, by Onno van der Linden and by Manuel Bouyer. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the NetBSD 53 * Foundation, Inc. and its contributors. 54 * 4. Neither the name of The NetBSD Foundation nor the names of its 55 * contributors may be used to endorse or promote products derived 56 * from this software without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 59 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 60 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 61 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 62 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 63 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 64 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 65 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 66 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 67 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 68 * POSSIBILITY OF SUCH DAMAGE. 69 */ 70 71 #include <sys/cdefs.h> 72 __KERNEL_RCSID(0, "$NetBSD: ata_wdc.c,v 1.33 2001/12/03 00:20:23 bouyer Exp $"); 73 74 #ifndef WDCDEBUG 75 #define WDCDEBUG 76 #endif /* WDCDEBUG */ 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 #include <sys/kernel.h> 81 #include <sys/file.h> 82 #include <sys/stat.h> 83 #include <sys/buf.h> 84 #include <sys/malloc.h> 85 #include <sys/device.h> 86 #include <sys/disklabel.h> 87 #include <sys/syslog.h> 88 #include <sys/proc.h> 89 90 #include <machine/intr.h> 91 #include <machine/bus.h> 92 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 93 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 94 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 95 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 96 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 97 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 98 99 #include <dev/ata/atareg.h> 100 #include <dev/ata/atavar.h> 101 #include <dev/ic/wdcreg.h> 102 #include <dev/ic/wdcvar.h> 103 #include <dev/ata/wdvar.h> 104 105 #define DEBUG_INTR 0x01 106 #define DEBUG_XFERS 0x02 107 #define DEBUG_STATUS 0x04 108 #define DEBUG_FUNCS 0x08 109 #define DEBUG_PROBE 0x10 110 #ifdef WDCDEBUG 111 int wdcdebug_wd_mask = 0; 112 #define WDCDEBUG_PRINT(args, level) \ 113 if (wdcdebug_wd_mask & (level)) \ 114 printf args 115 #else 116 #define WDCDEBUG_PRINT(args, level) 117 #endif 118 119 #define ATA_DELAY 10000 /* 10s for a drive I/O */ 120 121 int wdc_ata_bio __P((struct ata_drive_datas*, struct ata_bio*)); 122 void wdc_ata_bio_start __P((struct channel_softc *,struct wdc_xfer *)); 123 void _wdc_ata_bio_start __P((struct channel_softc *,struct wdc_xfer *)); 124 int wdc_ata_bio_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 125 void wdc_ata_bio_kill_xfer __P((struct channel_softc *,struct wdc_xfer *)); 126 void wdc_ata_bio_done __P((struct channel_softc *, struct wdc_xfer *)); 127 int wdc_ata_ctrl_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 128 int wdc_ata_err __P((struct ata_drive_datas *, struct ata_bio *)); 129 #define WDC_ATA_NOERR 0x00 /* Drive doesn't report an error */ 130 #define WDC_ATA_RECOV 0x01 /* There was a recovered error */ 131 #define WDC_ATA_ERR 0x02 /* Drive reports an error */ 132 int wdc_ata_addref __P((struct ata_drive_datas *)); 133 void wdc_ata_delref __P((struct ata_drive_datas *)); 134 void wdc_ata_kill_pending __P((struct ata_drive_datas *)); 135 136 const struct ata_bustype wdc_ata_bustype = { 137 SCSIPI_BUSTYPE_ATA, 138 wdc_ata_bio, 139 wdc_reset_channel, 140 wdc_exec_command, 141 ata_get_params, 142 wdc_ata_addref, 143 wdc_ata_delref, 144 wdc_ata_kill_pending, 145 }; 146 147 148 /* 149 * Handle block I/O operation. Return WDC_COMPLETE, WDC_QUEUED, or 150 * WDC_TRY_AGAIN. Must be called at splbio(). 151 */ 152 int 153 wdc_ata_bio(drvp, ata_bio) 154 struct ata_drive_datas *drvp; 155 struct ata_bio *ata_bio; 156 { 157 struct wdc_xfer *xfer; 158 struct channel_softc *chp = drvp->chnl_softc; 159 160 xfer = wdc_get_xfer(WDC_NOSLEEP); 161 if (xfer == NULL) 162 return WDC_TRY_AGAIN; 163 if (chp->wdc->cap & WDC_CAPABILITY_NOIRQ) 164 ata_bio->flags |= ATA_POLL; 165 if (ata_bio->flags & ATA_POLL) 166 xfer->c_flags |= C_POLL; 167 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 168 (ata_bio->flags & ATA_SINGLE) == 0) 169 xfer->c_flags |= C_DMA; 170 xfer->drive = drvp->drive; 171 xfer->cmd = ata_bio; 172 xfer->databuf = ata_bio->databuf; 173 xfer->c_bcount = ata_bio->bcount; 174 xfer->c_start = wdc_ata_bio_start; 175 xfer->c_intr = wdc_ata_bio_intr; 176 xfer->c_kill_xfer = wdc_ata_bio_kill_xfer; 177 wdc_exec_xfer(chp, xfer); 178 return (ata_bio->flags & ATA_ITSDONE) ? WDC_COMPLETE : WDC_QUEUED; 179 } 180 181 void 182 wdc_ata_bio_start(chp, xfer) 183 struct channel_softc *chp; 184 struct wdc_xfer *xfer; 185 { 186 struct ata_bio *ata_bio = xfer->cmd; 187 WDCDEBUG_PRINT(("wdc_ata_bio_start %s:%d:%d\n", 188 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 189 DEBUG_XFERS); 190 191 /* start timeout machinery */ 192 if ((ata_bio->flags & ATA_POLL) == 0) 193 callout_reset(&chp->ch_callout, ATA_DELAY / 1000 * hz, 194 wdctimeout, chp); 195 _wdc_ata_bio_start(chp, xfer); 196 } 197 198 void 199 _wdc_ata_bio_start(chp, xfer) 200 struct channel_softc *chp; 201 struct wdc_xfer *xfer; 202 { 203 struct ata_bio *ata_bio = xfer->cmd; 204 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 205 u_int16_t cyl; 206 u_int8_t head, sect, cmd = 0; 207 int nblks; 208 int ata_delay; 209 int dma_flags = 0; 210 211 WDCDEBUG_PRINT(("_wdc_ata_bio_start %s:%d:%d\n", 212 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 213 DEBUG_INTR | DEBUG_XFERS); 214 /* Do control operations specially. */ 215 if (drvp->state < READY) { 216 /* 217 * Actually, we want to be careful not to mess with the control 218 * state if the device is currently busy, but we can assume 219 * that we never get to this point if that's the case. 220 */ 221 /* at this point, we should only be in RECAL state */ 222 if (drvp->state != RESET) { 223 printf("%s:%d:%d: bad state %d in _wdc_ata_bio_start\n", 224 chp->wdc->sc_dev.dv_xname, chp->channel, 225 xfer->drive, drvp->state); 226 panic("_wdc_ata_bio_start: bad state"); 227 } 228 drvp->state = RECAL; 229 xfer->c_intr = wdc_ata_ctrl_intr; 230 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 231 WDSD_IBM | (xfer->drive << 4)); 232 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, ATA_DELAY) != 0) 233 goto timeout; 234 wdccommandshort(chp, xfer->drive, WDCC_RECAL); 235 drvp->state = RECAL_WAIT; 236 if ((ata_bio->flags & ATA_POLL) == 0) { 237 chp->ch_flags |= WDCF_IRQ_WAIT; 238 } else { 239 /* Wait for at last 400ns for status bit to be valid */ 240 DELAY(1); 241 wdc_ata_ctrl_intr(chp, xfer, 0); 242 } 243 return; 244 } 245 246 if (xfer->c_flags & C_DMA) { 247 if (drvp->n_xfers <= NXFER) 248 drvp->n_xfers++; 249 dma_flags = (ata_bio->flags & ATA_READ) ? WDC_DMA_READ : 0; 250 } 251 if (ata_bio->flags & ATA_SINGLE) 252 ata_delay = ATA_DELAY; 253 else 254 ata_delay = ATA_DELAY; 255 again: 256 /* 257 * 258 * When starting a multi-sector transfer, or doing single-sector 259 * transfers... 260 */ 261 if (xfer->c_skip == 0 || (ata_bio->flags & ATA_SINGLE) != 0) { 262 if (ata_bio->flags & ATA_SINGLE) 263 nblks = 1; 264 else 265 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 266 /* Check for bad sectors and adjust transfer, if necessary. */ 267 if ((ata_bio->lp->d_flags & D_BADSECT) != 0) { 268 long blkdiff; 269 int i; 270 for (i = 0; (blkdiff = ata_bio->badsect[i]) != -1; 271 i++) { 272 blkdiff -= ata_bio->blkno; 273 if (blkdiff < 0) 274 continue; 275 if (blkdiff == 0) { 276 /* Replace current block of transfer. */ 277 ata_bio->blkno = 278 ata_bio->lp->d_secperunit - 279 ata_bio->lp->d_nsectors - i - 1; 280 } 281 if (blkdiff < nblks) { 282 /* Bad block inside transfer. */ 283 ata_bio->flags |= ATA_SINGLE; 284 nblks = 1; 285 } 286 break; 287 } 288 /* Transfer is okay now. */ 289 } 290 if (ata_bio->flags & ATA_LBA) { 291 sect = (ata_bio->blkno >> 0) & 0xff; 292 cyl = (ata_bio->blkno >> 8) & 0xffff; 293 head = (ata_bio->blkno >> 24) & 0x0f; 294 head |= WDSD_LBA; 295 } else { 296 int blkno = ata_bio->blkno; 297 sect = blkno % ata_bio->lp->d_nsectors; 298 sect++; /* Sectors begin with 1, not 0. */ 299 blkno /= ata_bio->lp->d_nsectors; 300 head = blkno % ata_bio->lp->d_ntracks; 301 blkno /= ata_bio->lp->d_ntracks; 302 cyl = blkno; 303 head |= WDSD_CHS; 304 } 305 if (xfer->c_flags & C_DMA) { 306 ata_bio->nblks = nblks; 307 ata_bio->nbytes = xfer->c_bcount; 308 cmd = (ata_bio->flags & ATA_READ) ? 309 WDCC_READDMA : WDCC_WRITEDMA; 310 /* Init the DMA channel. */ 311 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 312 chp->channel, xfer->drive, 313 (char *)xfer->databuf + xfer->c_skip, 314 ata_bio->nbytes, dma_flags) != 0) { 315 ata_bio->error = ERR_DMA; 316 ata_bio->r_error = 0; 317 wdc_ata_bio_done(chp, xfer); 318 return; 319 } 320 /* Initiate command */ 321 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 322 WDSD_IBM | (xfer->drive << 4)); 323 if (wait_for_ready(chp, ata_delay) < 0) 324 goto timeout; 325 wdccommand(chp, xfer->drive, cmd, cyl, 326 head, sect, nblks, 0); 327 /* start the DMA channel */ 328 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 329 chp->channel, xfer->drive); 330 chp->ch_flags |= WDCF_DMA_WAIT; 331 /* wait for irq */ 332 goto intr; 333 } /* else not DMA */ 334 ata_bio->nblks = min(nblks, ata_bio->multi); 335 ata_bio->nbytes = ata_bio->nblks * ata_bio->lp->d_secsize; 336 if (ata_bio->nblks > 1 && (ata_bio->flags & ATA_SINGLE) == 0) { 337 cmd = (ata_bio->flags & ATA_READ) ? 338 WDCC_READMULTI : WDCC_WRITEMULTI; 339 } else { 340 cmd = (ata_bio->flags & ATA_READ) ? 341 WDCC_READ : WDCC_WRITE; 342 } 343 /* Initiate command! */ 344 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 345 WDSD_IBM | (xfer->drive << 4)); 346 if (wait_for_ready(chp, ata_delay) < 0) 347 goto timeout; 348 wdccommand(chp, xfer->drive, cmd, cyl, 349 head, sect, nblks, 350 (ata_bio->lp->d_type == DTYPE_ST506) ? 351 ata_bio->lp->d_precompcyl / 4 : 0); 352 } else if (ata_bio->nblks > 1) { 353 /* The number of blocks in the last stretch may be smaller. */ 354 nblks = xfer->c_bcount / ata_bio->lp->d_secsize; 355 if (ata_bio->nblks > nblks) { 356 ata_bio->nblks = nblks; 357 ata_bio->nbytes = xfer->c_bcount; 358 } 359 } 360 /* If this was a write and not using DMA, push the data. */ 361 if ((ata_bio->flags & ATA_READ) == 0) { 362 if (wait_for_drq(chp, ata_delay) != 0) { 363 printf("%s:%d:%d: timeout waiting for DRQ, " 364 "st=0x%02x, err=0x%02x\n", 365 chp->wdc->sc_dev.dv_xname, chp->channel, 366 xfer->drive, chp->ch_status, chp->ch_error); 367 if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) 368 ata_bio->error = TIMEOUT; 369 wdc_ata_bio_done(chp, xfer); 370 return; 371 } 372 if (wdc_ata_err(drvp, ata_bio) == WDC_ATA_ERR) { 373 wdc_ata_bio_done(chp, xfer); 374 return; 375 } 376 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 377 if (drvp->drive_flags & DRIVE_CAP32) { 378 bus_space_write_multi_4(chp->data32iot, 379 chp->data32ioh, 0, 380 (u_int32_t *)((char *)xfer->databuf + 381 xfer->c_skip), 382 ata_bio->nbytes >> 2); 383 } else { 384 bus_space_write_multi_2(chp->cmd_iot, 385 chp->cmd_ioh, wd_data, 386 (u_int16_t *)((char *)xfer->databuf + 387 xfer->c_skip), 388 ata_bio->nbytes >> 1); 389 } 390 } else { 391 if (drvp->drive_flags & DRIVE_CAP32) { 392 bus_space_write_multi_stream_4(chp->data32iot, 393 chp->data32ioh, 0, 394 (u_int32_t *)((char *)xfer->databuf + 395 xfer->c_skip), 396 ata_bio->nbytes >> 2); 397 } else { 398 bus_space_write_multi_stream_2(chp->cmd_iot, 399 chp->cmd_ioh, wd_data, 400 (u_int16_t *)((char *)xfer->databuf + 401 xfer->c_skip), 402 ata_bio->nbytes >> 1); 403 } 404 } 405 } 406 407 intr: /* Wait for IRQ (either real or polled) */ 408 if ((ata_bio->flags & ATA_POLL) == 0) { 409 chp->ch_flags |= WDCF_IRQ_WAIT; 410 } else { 411 /* Wait for at last 400ns for status bit to be valid */ 412 delay(1); 413 if (chp->ch_flags & WDCF_DMA_WAIT) { 414 wdc_dmawait(chp, xfer, ATA_DELAY); 415 chp->ch_flags &= ~WDCF_DMA_WAIT; 416 } 417 wdc_ata_bio_intr(chp, xfer, 0); 418 if ((ata_bio->flags & ATA_ITSDONE) == 0) 419 goto again; 420 } 421 return; 422 timeout: 423 printf("%s:%d:%d: not ready, st=0x%02x, err=0x%02x\n", 424 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 425 chp->ch_status, chp->ch_error); 426 if (wdc_ata_err(drvp, ata_bio) != WDC_ATA_ERR) 427 ata_bio->error = TIMEOUT; 428 wdc_ata_bio_done(chp, xfer); 429 return; 430 } 431 432 int 433 wdc_ata_bio_intr(chp, xfer, irq) 434 struct channel_softc *chp; 435 struct wdc_xfer *xfer; 436 int irq; 437 { 438 struct ata_bio *ata_bio = xfer->cmd; 439 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 440 int drv_err; 441 442 WDCDEBUG_PRINT(("wdc_ata_bio_intr %s:%d:%d\n", 443 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive), 444 DEBUG_INTR | DEBUG_XFERS); 445 446 447 /* Is it not a transfer, but a control operation? */ 448 if (drvp->state < READY) { 449 printf("%s:%d:%d: bad state %d in wdc_ata_bio_intr\n", 450 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 451 drvp->state); 452 panic("wdc_ata_bio_intr: bad state\n"); 453 } 454 455 /* 456 * if we missed an interrupt in a PIO transfer, reset and restart. 457 * Don't try to continue transfer, we may have missed cycles. 458 */ 459 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 460 ata_bio->error = TIMEOUT; 461 wdc_ata_bio_done(chp, xfer); 462 return 1; 463 } 464 465 /* Ack interrupt done by wait_for_unbusy */ 466 if (wait_for_unbusy(chp, 467 (irq == 0) ? ATA_DELAY : 0) < 0) { 468 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 469 return 0; /* IRQ was not for us */ 470 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 471 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 472 xfer->c_bcount, xfer->c_skip); 473 /* if we were using DMA, flag a DMA error */ 474 if (xfer->c_flags & C_DMA) { 475 ata_dmaerr(drvp); 476 } 477 ata_bio->error = TIMEOUT; 478 wdc_ata_bio_done(chp, xfer); 479 return 1; 480 } 481 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 482 chp->wdc->irqack(chp); 483 484 drv_err = wdc_ata_err(drvp, ata_bio); 485 486 /* If we were using DMA, Turn off the DMA channel and check for error */ 487 if (xfer->c_flags & C_DMA) { 488 if (ata_bio->flags & ATA_POLL) { 489 /* 490 * IDE drives deassert WDCS_BSY before transfer is 491 * complete when using DMA. Polling for DRQ to deassert 492 * is not enouth DRQ is not required to be 493 * asserted for DMA transfers, so poll for DRDY. 494 */ 495 if (wdcwait(chp, WDCS_DRDY | WDCS_DRQ, WDCS_DRDY, 496 ATA_DELAY) < 0) { 497 printf("%s:%d:%d: polled transfer timed out " 498 "(st=0x%x)\n", chp->wdc->sc_dev.dv_xname, 499 chp->channel, xfer->drive, chp->ch_status); 500 ata_bio->error = TIMEOUT; 501 drv_err = WDC_ATA_ERR; 502 } 503 } 504 if (chp->wdc->dma_status != 0) { 505 if (drv_err != WDC_ATA_ERR) { 506 ata_bio->error = ERR_DMA; 507 drv_err = WDC_ATA_ERR; 508 } 509 } 510 if (chp->ch_status & WDCS_DRQ) { 511 if (drv_err != WDC_ATA_ERR) { 512 printf("%s:%d:%d: intr with DRQ (st=0x%x)\n", 513 chp->wdc->sc_dev.dv_xname, chp->channel, 514 xfer->drive, chp->ch_status); 515 ata_bio->error = TIMEOUT; 516 drv_err = WDC_ATA_ERR; 517 } 518 } 519 if (drv_err != WDC_ATA_ERR) 520 goto end; 521 ata_dmaerr(drvp); 522 } 523 524 /* if we had an error, end */ 525 if (drv_err == WDC_ATA_ERR) { 526 wdc_ata_bio_done(chp, xfer); 527 return 1; 528 } 529 530 /* If this was a read and not using DMA, fetch the data. */ 531 if ((ata_bio->flags & ATA_READ) != 0) { 532 if ((chp->ch_status & WDCS_DRQ) != WDCS_DRQ) { 533 printf("%s:%d:%d: read intr before drq\n", 534 chp->wdc->sc_dev.dv_xname, chp->channel, 535 xfer->drive); 536 ata_bio->error = TIMEOUT; 537 wdc_ata_bio_done(chp, xfer); 538 return 1; 539 } 540 if ((chp->wdc->cap & WDC_CAPABILITY_ATA_NOSTREAM)) { 541 if (drvp->drive_flags & DRIVE_CAP32) { 542 bus_space_read_multi_4(chp->data32iot, 543 chp->data32ioh, 0, 544 (u_int32_t *)((char *)xfer->databuf + 545 xfer->c_skip), 546 ata_bio->nbytes >> 2); 547 } else { 548 bus_space_read_multi_2(chp->cmd_iot, 549 chp->cmd_ioh, wd_data, 550 (u_int16_t *)((char *)xfer->databuf + 551 xfer->c_skip), 552 ata_bio->nbytes >> 1); 553 } 554 } else { 555 if (drvp->drive_flags & DRIVE_CAP32) { 556 bus_space_read_multi_stream_4(chp->data32iot, 557 chp->data32ioh, 0, 558 (u_int32_t *)((char *)xfer->databuf + 559 xfer->c_skip), 560 ata_bio->nbytes >> 2); 561 } else { 562 bus_space_read_multi_stream_2(chp->cmd_iot, 563 chp->cmd_ioh, wd_data, 564 (u_int16_t *)((char *)xfer->databuf + 565 xfer->c_skip), 566 ata_bio->nbytes >> 1); 567 } 568 } 569 } 570 571 end: 572 ata_bio->blkno += ata_bio->nblks; 573 ata_bio->blkdone += ata_bio->nblks; 574 xfer->c_skip += ata_bio->nbytes; 575 xfer->c_bcount -= ata_bio->nbytes; 576 /* See if this transfer is complete. */ 577 if (xfer->c_bcount > 0) { 578 if ((ata_bio->flags & ATA_POLL) == 0) { 579 /* Start the next operation */ 580 _wdc_ata_bio_start(chp, xfer); 581 } else { 582 /* Let _wdc_ata_bio_start do the loop */ 583 return 1; 584 } 585 } else { /* Done with this transfer */ 586 ata_bio->error = NOERROR; 587 wdc_ata_bio_done(chp, xfer); 588 } 589 return 1; 590 } 591 592 void 593 wdc_ata_kill_pending(drvp) 594 struct ata_drive_datas *drvp; 595 { 596 struct channel_softc *chp = drvp->chnl_softc; 597 598 wdc_kill_pending(chp); 599 } 600 601 void 602 wdc_ata_bio_kill_xfer(chp, xfer) 603 struct channel_softc *chp; 604 struct wdc_xfer *xfer; 605 { 606 struct ata_bio *ata_bio = xfer->cmd; 607 int drive = xfer->drive; 608 609 callout_stop(&chp->ch_callout); 610 /* remove this command from xfer queue */ 611 wdc_free_xfer(chp, xfer); 612 613 ata_bio->flags |= ATA_ITSDONE; 614 ata_bio->error = ERR_NODEV; 615 ata_bio->r_error = WDCE_ABRT; 616 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); 617 wddone(chp->ch_drive[drive].drv_softc); 618 } 619 620 void 621 wdc_ata_bio_done(chp, xfer) 622 struct channel_softc *chp; 623 struct wdc_xfer *xfer; 624 { 625 struct ata_bio *ata_bio = xfer->cmd; 626 int drive = xfer->drive; 627 628 WDCDEBUG_PRINT(("wdc_ata_bio_done %s:%d:%d: flags 0x%x\n", 629 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 630 (u_int)xfer->c_flags), 631 DEBUG_XFERS); 632 633 callout_stop(&chp->ch_callout); 634 635 /* feed back residual bcount to our caller */ 636 ata_bio->bcount = xfer->c_bcount; 637 638 /* remove this command from xfer queue */ 639 wdc_free_xfer(chp, xfer); 640 641 ata_bio->flags |= ATA_ITSDONE; 642 WDCDEBUG_PRINT(("wdc_ata_done: wddone\n"), DEBUG_XFERS); 643 wddone(chp->ch_drive[drive].drv_softc); 644 WDCDEBUG_PRINT(("wdcstart from wdc_ata_done, flags 0x%x\n", 645 chp->ch_flags), DEBUG_XFERS); 646 wdcstart(chp); 647 } 648 649 /* 650 * Implement operations needed before read/write. 651 */ 652 int 653 wdc_ata_ctrl_intr(chp, xfer, irq) 654 struct channel_softc *chp; 655 struct wdc_xfer *xfer; 656 int irq; 657 { 658 struct ata_bio *ata_bio = xfer->cmd; 659 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 660 char *errstring = NULL; 661 int delay = (irq == 0) ? ATA_DELAY : 0; 662 663 WDCDEBUG_PRINT(("wdc_ata_ctrl_intr: state %d\n", drvp->state), 664 DEBUG_FUNCS); 665 666 again: 667 switch (drvp->state) { 668 case RECAL: /* Should not be in this state here */ 669 panic("wdc_ata_ctrl_intr: state==RECAL"); 670 break; 671 672 case RECAL_WAIT: 673 errstring = "recal"; 674 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) 675 goto timeout; 676 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 677 chp->wdc->irqack(chp); 678 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 679 goto error; 680 /* fall through */ 681 682 case PIOMODE: 683 /* Don't try to set modes if controller can't be adjusted */ 684 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 685 goto geometry; 686 /* Also don't try if the drive didn't report its mode */ 687 if ((drvp->drive_flags & DRIVE_MODE) == 0) 688 goto geometry; 689 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 690 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 691 drvp->state = PIOMODE_WAIT; 692 break; 693 694 case PIOMODE_WAIT: 695 errstring = "piomode"; 696 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) 697 goto timeout; 698 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 699 chp->wdc->irqack(chp); 700 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 701 goto error; 702 /* fall through */ 703 704 case DMAMODE: 705 if (drvp->drive_flags & DRIVE_UDMA) { 706 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 707 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 708 } else if (drvp->drive_flags & DRIVE_DMA) { 709 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 710 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 711 } else { 712 goto geometry; 713 } 714 drvp->state = DMAMODE_WAIT; 715 break; 716 case DMAMODE_WAIT: 717 errstring = "dmamode"; 718 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) 719 goto timeout; 720 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 721 chp->wdc->irqack(chp); 722 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 723 goto error; 724 /* fall through */ 725 726 case GEOMETRY: 727 geometry: 728 if (ata_bio->flags & ATA_LBA) 729 goto multimode; 730 wdccommand(chp, xfer->drive, WDCC_IDP, 731 ata_bio->lp->d_ncylinders, 732 ata_bio->lp->d_ntracks - 1, 0, ata_bio->lp->d_nsectors, 733 (ata_bio->lp->d_type == DTYPE_ST506) ? 734 ata_bio->lp->d_precompcyl / 4 : 0); 735 drvp->state = GEOMETRY_WAIT; 736 break; 737 738 case GEOMETRY_WAIT: 739 errstring = "geometry"; 740 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) 741 goto timeout; 742 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 743 chp->wdc->irqack(chp); 744 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 745 goto error; 746 /* fall through */ 747 748 case MULTIMODE: 749 multimode: 750 if (ata_bio->multi == 1) 751 goto ready; 752 wdccommand(chp, xfer->drive, WDCC_SETMULTI, 0, 0, 0, 753 ata_bio->multi, 0); 754 drvp->state = MULTIMODE_WAIT; 755 break; 756 757 case MULTIMODE_WAIT: 758 errstring = "setmulti"; 759 if (wdcwait(chp, WDCS_DRDY, WDCS_DRDY, delay)) 760 goto timeout; 761 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 762 chp->wdc->irqack(chp); 763 if (chp->ch_status & (WDCS_ERR | WDCS_DWF)) 764 goto error; 765 /* fall through */ 766 767 case READY: 768 ready: 769 drvp->state = READY; 770 /* 771 * The drive is usable now 772 */ 773 xfer->c_intr = wdc_ata_bio_intr; 774 _wdc_ata_bio_start(chp, xfer); 775 return 1; 776 } 777 778 if ((ata_bio->flags & ATA_POLL) == 0) { 779 chp->ch_flags |= WDCF_IRQ_WAIT; 780 } else { 781 goto again; 782 } 783 return 1; 784 785 timeout: 786 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 787 return 0; /* IRQ was not for us */ 788 } 789 printf("%s:%d:%d: %s timed out\n", 790 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 791 ata_bio->error = TIMEOUT; 792 drvp->state = 0; 793 wdc_ata_bio_done(chp, xfer); 794 return 0; 795 error: 796 printf("%s:%d:%d: %s ", 797 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 798 errstring); 799 if (chp->ch_status & WDCS_DWF) { 800 printf("drive fault\n"); 801 ata_bio->error = ERR_DF; 802 } else { 803 printf("error (%x)\n", chp->ch_error); 804 ata_bio->r_error = chp->ch_error; 805 ata_bio->error = ERROR; 806 } 807 drvp->state = 0; 808 wdc_ata_bio_done(chp, xfer); 809 return 1; 810 } 811 812 int 813 wdc_ata_err(drvp, ata_bio) 814 struct ata_drive_datas *drvp; 815 struct ata_bio *ata_bio; 816 { 817 struct channel_softc *chp = drvp->chnl_softc; 818 ata_bio->error = 0; 819 if (chp->ch_status & WDCS_BSY) { 820 ata_bio->error = TIMEOUT; 821 return WDC_ATA_ERR; 822 } 823 824 if (chp->ch_status & WDCS_DWF) { 825 ata_bio->error = ERR_DF; 826 return WDC_ATA_ERR; 827 } 828 829 if (chp->ch_status & WDCS_ERR) { 830 ata_bio->error = ERROR; 831 ata_bio->r_error = chp->ch_error; 832 if (drvp->drive_flags & DRIVE_UDMA && 833 (ata_bio->r_error & WDCE_CRC)) { 834 /* 835 * Record the CRC error, to avoid downgrading to 836 * multiword DMA 837 */ 838 drvp->drive_flags |= DRIVE_DMAERR; 839 } 840 if (ata_bio->r_error & (WDCE_BBK | WDCE_UNC | WDCE_IDNF | 841 WDCE_ABRT | WDCE_TK0NF | WDCE_AMNF)) 842 return WDC_ATA_ERR; 843 return WDC_ATA_NOERR; 844 } 845 846 if (chp->ch_status & WDCS_CORR) 847 ata_bio->flags |= ATA_CORR; 848 return WDC_ATA_NOERR; 849 } 850 851 int 852 wdc_ata_addref(drvp) 853 struct ata_drive_datas *drvp; 854 { 855 struct channel_softc *chp = drvp->chnl_softc; 856 857 return (wdc_addref(chp)); 858 } 859 860 void 861 wdc_ata_delref(drvp) 862 struct ata_drive_datas *drvp; 863 { 864 struct channel_softc *chp = drvp->chnl_softc; 865 866 wdc_delref(chp); 867 } 868
Indexes created Tue Sep 30 06:09:59 GMT 2025