atapi_wdc.c revision 1.56
1 /* $NetBSD: atapi_wdc.c,v 1.56 2003/09/07 22:11:22 mycroft 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 Manuel Bouyer. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.56 2003/09/07 22:11:22 mycroft Exp $"); 36 37 #ifndef WDCDEBUG 38 #define WDCDEBUG 39 #endif /* WDCDEBUG */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/file.h> 45 #include <sys/stat.h> 46 #include <sys/buf.h> 47 #include <sys/malloc.h> 48 #include <sys/device.h> 49 #include <sys/syslog.h> 50 #include <sys/proc.h> 51 #include <sys/dvdio.h> 52 53 #include <machine/intr.h> 54 #include <machine/bus.h> 55 56 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 57 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 58 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 59 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 60 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 61 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 62 63 #include <dev/ata/atareg.h> 64 #include <dev/ata/atavar.h> 65 #include <dev/ic/wdcreg.h> 66 #include <dev/ic/wdcvar.h> 67 68 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 69 70 #define DEBUG_INTR 0x01 71 #define DEBUG_XFERS 0x02 72 #define DEBUG_STATUS 0x04 73 #define DEBUG_FUNCS 0x08 74 #define DEBUG_PROBE 0x10 75 #ifdef WDCDEBUG 76 int wdcdebug_atapi_mask = 0; 77 #define WDCDEBUG_PRINT(args, level) \ 78 if (wdcdebug_atapi_mask & (level)) \ 79 printf args 80 #else 81 #define WDCDEBUG_PRINT(args, level) 82 #endif 83 84 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 85 int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, 86 struct ataparams *)); 87 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 88 void wdc_atapi_minphys __P((struct buf *bp)); 89 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 90 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 91 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 92 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 93 void wdc_atapi_phase_complete __P((struct wdc_xfer *)); 94 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 95 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 96 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 97 scsipi_adapter_req_t, void *)); 98 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 99 void wdc_atapi_polldsc __P((void *arg)); 100 101 #define MAX_SIZE MAXPHYS 102 103 const struct scsipi_bustype wdc_atapi_bustype = { 104 SCSIPI_BUSTYPE_ATAPI, 105 atapi_scsipi_cmd, 106 atapi_interpret_sense, 107 atapi_print_addr, 108 wdc_atapi_kill_pending, 109 }; 110 111 void 112 wdc_atapibus_attach(chp) 113 struct channel_softc *chp; 114 { 115 struct wdc_softc *wdc = chp->wdc; 116 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 117 struct scsipi_channel *chan = &chp->ch_atapi_channel; 118 119 /* 120 * Fill in the scsipi_adapter. 121 */ 122 adapt->adapt_dev = &wdc->sc_dev; 123 adapt->adapt_nchannels = wdc->nchannels; 124 adapt->adapt_request = wdc_atapi_scsipi_request; 125 adapt->adapt_minphys = wdc_atapi_minphys; 126 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 127 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 128 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 129 130 /* 131 * Fill in the scsipi_channel. 132 */ 133 memset(chan, 0, sizeof(*chan)); 134 chan->chan_adapter = adapt; 135 chan->chan_bustype = &wdc_atapi_bustype; 136 chan->chan_channel = chp->channel; 137 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 138 chan->chan_openings = 1; 139 chan->chan_max_periph = 1; 140 chan->chan_ntargets = 2; 141 chan->chan_nluns = 1; 142 143 chp->atapibus = config_found(&wdc->sc_dev, chan, atapiprint); 144 } 145 146 void 147 wdc_atapi_minphys(bp) 148 struct buf *bp; 149 { 150 151 if (bp->b_bcount > MAX_SIZE) 152 bp->b_bcount = MAX_SIZE; 153 minphys(bp); 154 } 155 156 /* 157 * Kill off all pending xfers for a periph. 158 * 159 * Must be called at splbio(). 160 */ 161 void 162 wdc_atapi_kill_pending(periph) 163 struct scsipi_periph *periph; 164 { 165 struct wdc_softc *wdc = 166 (void *)periph->periph_channel->chan_adapter->adapt_dev; 167 struct channel_softc *chp = 168 wdc->channels[periph->periph_channel->chan_channel]; 169 170 wdc_kill_pending(chp); 171 } 172 173 void 174 wdc_atapi_kill_xfer(chp, xfer) 175 struct channel_softc *chp; 176 struct wdc_xfer *xfer; 177 { 178 struct scsipi_xfer *sc_xfer = xfer->cmd; 179 180 callout_stop(&chp->ch_callout); 181 /* remove this command from xfer queue */ 182 wdc_free_xfer(chp, xfer); 183 sc_xfer->error = XS_DRIVER_STUFFUP; 184 scsipi_done(sc_xfer); 185 } 186 187 int 188 wdc_atapi_get_params(chan, drive, flags, id) 189 struct scsipi_channel *chan; 190 int drive, flags; 191 struct ataparams *id; 192 { 193 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 194 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 195 struct wdc_command wdc_c; 196 197 /* if no ATAPI device detected at wdc attach time, skip */ 198 /* 199 * XXX this will break scsireprobe if this is of any interest for 200 * ATAPI devices one day. 201 */ 202 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 203 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 204 drive), DEBUG_PROBE); 205 return -1; 206 } 207 memset(&wdc_c, 0, sizeof(struct wdc_command)); 208 wdc_c.r_command = ATAPI_SOFT_RESET; 209 wdc_c.r_st_bmask = 0; 210 wdc_c.r_st_pmask = 0; 211 wdc_c.flags = AT_POLL; 212 wdc_c.timeout = WDC_RESET_WAIT; 213 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 214 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 215 " drive %s:%d:%d: driver failed\n", 216 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 217 panic("wdc_atapi_get_params"); 218 } 219 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 220 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 221 "failed for drive %s:%d:%d: error 0x%x\n", 222 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 223 wdc_c.r_error), DEBUG_PROBE); 224 return -1; 225 } 226 chp->ch_drive[drive].state = 0; 227 228 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 229 230 /* Some ATAPI devices need a bit more time after software reset. */ 231 delay(5000); 232 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 233 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 234 "failed for drive %s:%d:%d: error 0x%x\n", 235 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 236 wdc_c.r_error), DEBUG_PROBE); 237 return -1; 238 } 239 return 0; 240 } 241 242 void 243 wdc_atapi_probe_device(sc, target) 244 struct atapibus_softc *sc; 245 int target; 246 { 247 struct scsipi_channel *chan = sc->sc_channel; 248 struct scsipi_periph *periph; 249 struct ataparams ids; 250 struct ataparams *id = &ids; 251 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 252 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 253 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 254 struct scsipibus_attach_args sa; 255 char serial_number[21], model[41], firmware_revision[9]; 256 257 /* skip if already attached */ 258 if (scsipi_lookup_periph(chan, target, 0) != NULL) 259 return; 260 261 if (wdc_atapi_get_params(chan, target, 262 XS_CTL_POLL|XS_CTL_NOSLEEP, id) == 0) { 263 #ifdef ATAPI_DEBUG_PROBE 264 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 265 sc->sc_dev.dv_xname, target, 266 id->atap_config & ATAPI_CFG_CMD_MASK, 267 id->atap_config & ATAPI_CFG_DRQ_MASK); 268 #endif 269 periph = scsipi_alloc_periph(M_NOWAIT); 270 if (periph == NULL) { 271 printf("%s: unable to allocate periph for drive %d\n", 272 sc->sc_dev.dv_xname, target); 273 return; 274 } 275 periph->periph_dev = NULL; 276 periph->periph_channel = chan; 277 periph->periph_switch = &atapi_probe_periphsw; 278 periph->periph_target = target; 279 periph->periph_lun = 0; 280 periph->periph_quirks = PQUIRK_ONLYBIG; 281 282 #ifdef SCSIPI_DEBUG 283 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 284 SCSIPI_DEBUG_TARGET == target) 285 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 286 #endif 287 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 288 if (id->atap_config & ATAPI_CFG_REMOV) 289 periph->periph_flags |= PERIPH_REMOVABLE; 290 if (periph->periph_type == T_SEQUENTIAL) 291 drvp->drive_flags |= DRIVE_ATAPIST; 292 293 sa.sa_periph = periph; 294 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 295 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 296 T_REMOV : T_FIXED; 297 scsipi_strvis(model, 40, id->atap_model, 40); 298 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 299 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 300 sa.sa_inqbuf.vendor = model; 301 sa.sa_inqbuf.product = serial_number; 302 sa.sa_inqbuf.revision = firmware_revision; 303 304 /* 305 * Determine the operating mode capabilities of the device. 306 */ 307 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 308 periph->periph_cap |= PERIPH_CAP_CMD16; 309 /* XXX This is gross. */ 310 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 311 312 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 313 314 if (drvp->drv_softc) 315 wdc_probe_caps(drvp); 316 } 317 } 318 319 void 320 wdc_atapi_scsipi_request(chan, req, arg) 321 struct scsipi_channel *chan; 322 scsipi_adapter_req_t req; 323 void *arg; 324 { 325 struct scsipi_adapter *adapt = chan->chan_adapter; 326 struct scsipi_periph *periph; 327 struct scsipi_xfer *sc_xfer; 328 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 329 struct wdc_xfer *xfer; 330 int channel = chan->chan_channel; 331 int drive, s; 332 333 switch (req) { 334 case ADAPTER_REQ_RUN_XFER: 335 sc_xfer = arg; 336 periph = sc_xfer->xs_periph; 337 drive = periph->periph_target; 338 339 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 340 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 341 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 342 sc_xfer->error = XS_DRIVER_STUFFUP; 343 scsipi_done(sc_xfer); 344 return; 345 } 346 347 xfer = wdc_get_xfer(WDC_NOSLEEP); 348 if (xfer == NULL) { 349 sc_xfer->error = XS_RESOURCE_SHORTAGE; 350 scsipi_done(sc_xfer); 351 return; 352 } 353 354 if (sc_xfer->xs_control & XS_CTL_POLL) 355 xfer->c_flags |= C_POLL; 356 xfer->drive = drive; 357 xfer->c_flags |= C_ATAPI; 358 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 359 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 360 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 361 /* 362 * DVD authentication commands must always be done in 363 * PIO mode. 364 */ 365 xfer->c_flags |= C_FORCEPIO; 366 } 367 /* 368 * DMA can't deal with transfers which are not a multiple of 369 * 2 bytes. It's a bug to request such transfers for ATAPI 370 * but as the request can come from userland, we have to 371 * protect against it. 372 * Also some devices seems to not handle DMA xfers of less than 373 * 4 bytes. 374 */ 375 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 376 xfer->c_flags |= C_FORCEPIO; 377 378 xfer->cmd = sc_xfer; 379 xfer->databuf = sc_xfer->data; 380 xfer->c_bcount = sc_xfer->datalen; 381 xfer->c_start = wdc_atapi_start; 382 xfer->c_intr = wdc_atapi_intr; 383 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 384 xfer->c_dscpoll = 0; 385 s = splbio(); 386 wdc_exec_xfer(wdc->channels[channel], xfer); 387 #ifdef DIAGNOSTIC 388 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 389 (sc_xfer->xs_status & XS_STS_DONE) == 0) 390 panic("wdc_atapi_scsipi_request: polled command " 391 "not done"); 392 #endif 393 splx(s); 394 return; 395 396 default: 397 /* Not supported, nothing to do. */ 398 ; 399 } 400 } 401 402 void 403 wdc_atapi_start(chp, xfer) 404 struct channel_softc *chp; 405 struct wdc_xfer *xfer; 406 { 407 struct scsipi_xfer *sc_xfer = xfer->cmd; 408 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 409 410 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 411 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 412 sc_xfer->xs_control), DEBUG_XFERS); 413 /* Adjust C_DMA, it may have changed if we are requesting sense */ 414 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 415 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 416 if (drvp->n_xfers <= NXFER) 417 drvp->n_xfers++; 418 xfer->c_flags |= C_DMA; 419 } else { 420 xfer->c_flags &= ~C_DMA; 421 } 422 /* start timeout machinery */ 423 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 424 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 425 wdctimeout, chp); 426 /* Do control operations specially. */ 427 if (drvp->state < READY) { 428 if (drvp->state != RESET) { 429 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 430 chp->wdc->sc_dev.dv_xname, chp->channel, 431 xfer->drive, drvp->state); 432 panic("wdc_atapi_start: bad state"); 433 } 434 drvp->state = PIOMODE; 435 wdc_atapi_ctrl(chp, xfer, 0); 436 return; 437 } 438 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 439 WDSD_IBM | (xfer->drive << 4)); 440 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 441 printf("wdc_atapi_start: not ready, st = %02x\n", 442 chp->ch_status); 443 sc_xfer->error = XS_TIMEOUT; 444 wdc_atapi_reset(chp, xfer); 445 return; 446 } 447 448 /* 449 * Even with WDCS_ERR, the device should accept a command packet 450 * Limit length to what can be stuffed into the cylinder register 451 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 452 * but not all devices do that and it's not obvious from the 453 * ATAPI spec that that behaviour should be expected. If more 454 * data is necessary, multiple data transfer phases will be done. 455 */ 456 457 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 458 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 459 0, 0, 0, 460 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 461 462 /* 463 * If there is no interrupt for CMD input, busy-wait for it (done in 464 * the interrupt routine. If it is a polled command, call the interrupt 465 * routine until command is done. 466 */ 467 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 468 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 469 /* Wait for at last 400ns for status bit to be valid */ 470 DELAY(1); 471 if (chp->ch_flags & WDCF_DMA_WAIT) { 472 wdc_dmawait(chp, xfer, sc_xfer->timeout); 473 chp->ch_flags &= ~WDCF_DMA_WAIT; 474 } 475 wdc_atapi_intr(chp, xfer, 0); 476 } else { 477 chp->ch_flags |= WDCF_IRQ_WAIT; 478 } 479 if (sc_xfer->xs_control & XS_CTL_POLL) { 480 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 481 /* Wait for at last 400ns for status bit to be valid */ 482 DELAY(1); 483 wdc_atapi_intr(chp, xfer, 0); 484 } 485 } 486 } 487 488 int 489 wdc_atapi_intr(chp, xfer, irq) 490 struct channel_softc *chp; 491 struct wdc_xfer *xfer; 492 int irq; 493 { 494 struct scsipi_xfer *sc_xfer = xfer->cmd; 495 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 496 int len, phase, i, retries=0; 497 int ire; 498 int dma_flags = 0; 499 void *cmd; 500 501 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 502 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 503 504 /* Is it not a transfer, but a control operation? */ 505 if (drvp->state < READY) { 506 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 507 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 508 drvp->state); 509 panic("wdc_atapi_intr: bad state"); 510 } 511 /* 512 * If we missed an interrupt in a PIO transfer, reset and restart. 513 * Don't try to continue transfer, we may have missed cycles. 514 */ 515 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 516 sc_xfer->error = XS_TIMEOUT; 517 wdc_atapi_reset(chp, xfer); 518 return 1; 519 } 520 521 /* Ack interrupt done in wait_for_unbusy */ 522 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 523 WDSD_IBM | (xfer->drive << 4)); 524 if (wait_for_unbusy(chp, 525 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 526 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 527 return 0; /* IRQ was not for us */ 528 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 529 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 530 xfer->c_bcount, xfer->c_skip); 531 if (xfer->c_flags & C_DMA) { 532 ata_dmaerr(drvp); 533 } 534 sc_xfer->error = XS_TIMEOUT; 535 wdc_atapi_reset(chp, xfer); 536 return 1; 537 } 538 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 539 chp->wdc->irqack(chp); 540 541 /* 542 * If we missed an IRQ and were using DMA, flag it as a DMA error 543 * and reset device. 544 */ 545 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 546 ata_dmaerr(drvp); 547 sc_xfer->error = XS_RESET; 548 wdc_atapi_reset(chp, xfer); 549 return (1); 550 } 551 /* 552 * if the request sense command was aborted, report the short sense 553 * previously recorded, else continue normal processing 554 */ 555 556 if (xfer->c_flags & C_DMA) 557 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 558 ? WDC_DMA_READ : 0; 559 again: 560 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 561 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 562 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 563 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 564 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 565 "ire 0x%x :", xfer->c_bcount, 566 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 567 568 switch (phase) { 569 case PHASE_CMDOUT: 570 cmd = sc_xfer->cmd; 571 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 572 /* Init the DMA channel if necessary */ 573 if (xfer->c_flags & C_DMA) { 574 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 575 chp->channel, xfer->drive, 576 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 577 sc_xfer->error = XS_DRIVER_STUFFUP; 578 break; 579 } 580 } 581 /* send packet command */ 582 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 583 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 584 if (drvp->drive_flags & DRIVE_CAP32) { 585 bus_space_write_multi_4(chp->data32iot, 586 chp->data32ioh, 0, 587 (u_int32_t *)cmd, 588 sc_xfer->cmdlen >> 2); 589 } else { 590 bus_space_write_multi_2(chp->cmd_iot, 591 chp->cmd_ioh, wd_data, 592 (u_int16_t *)cmd, 593 sc_xfer->cmdlen >> 1); 594 } 595 } else { 596 if (drvp->drive_flags & DRIVE_CAP32) { 597 bus_space_write_multi_stream_4(chp->data32iot, 598 chp->data32ioh, 0, 599 (u_int32_t *)cmd, 600 sc_xfer->cmdlen >> 2); 601 } else { 602 bus_space_write_multi_stream_2(chp->cmd_iot, 603 chp->cmd_ioh, wd_data, 604 (u_int16_t *)cmd, 605 sc_xfer->cmdlen >> 1); 606 } 607 } 608 /* Start the DMA channel if necessary */ 609 if (xfer->c_flags & C_DMA) { 610 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 611 chp->channel, xfer->drive); 612 chp->ch_flags |= WDCF_DMA_WAIT; 613 } 614 615 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 616 chp->ch_flags |= WDCF_IRQ_WAIT; 617 } 618 return 1; 619 620 case PHASE_DATAOUT: 621 /* write data */ 622 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 623 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 624 (xfer->c_flags & C_DMA) != 0) { 625 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 626 if (xfer->c_flags & C_DMA) { 627 ata_dmaerr(drvp); 628 } 629 sc_xfer->error = XS_TIMEOUT; 630 wdc_atapi_reset(chp, xfer); 631 return 1; 632 } 633 if (xfer->c_bcount < len) { 634 printf("wdc_atapi_intr: warning: write only " 635 "%d of %d requested bytes\n", xfer->c_bcount, len); 636 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 637 bus_space_write_multi_2(chp->cmd_iot, 638 chp->cmd_ioh, wd_data, 639 (u_int16_t *)((char *)xfer->databuf + 640 xfer->c_skip), 641 xfer->c_bcount >> 1); 642 } else { 643 bus_space_write_multi_stream_2(chp->cmd_iot, 644 chp->cmd_ioh, wd_data, 645 (u_int16_t *)((char *)xfer->databuf + 646 xfer->c_skip), 647 xfer->c_bcount >> 1); 648 } 649 for (i = xfer->c_bcount; i < len; i += 2) 650 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 651 wd_data, 0); 652 xfer->c_skip += xfer->c_bcount; 653 xfer->c_bcount = 0; 654 } else { 655 if (drvp->drive_flags & DRIVE_CAP32) { 656 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 657 bus_space_write_multi_4(chp->data32iot, 658 chp->data32ioh, 0, 659 (u_int32_t *)((char *)xfer->databuf + 660 xfer->c_skip), 661 len >> 2); 662 else 663 bus_space_write_multi_stream_4(chp->data32iot, 664 chp->data32ioh, wd_data, 665 (u_int32_t *)((char *)xfer->databuf + 666 xfer->c_skip), 667 len >> 2); 668 669 xfer->c_skip += len & 0xfffffffc; 670 xfer->c_bcount -= len & 0xfffffffc; 671 len = len & 0x03; 672 } 673 if (len > 0) { 674 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 675 bus_space_write_multi_2(chp->cmd_iot, 676 chp->cmd_ioh, wd_data, 677 (u_int16_t *)((char *)xfer->databuf + 678 xfer->c_skip), 679 len >> 1); 680 else 681 bus_space_write_multi_stream_2(chp->cmd_iot, 682 chp->cmd_ioh, wd_data, 683 (u_int16_t *)((char *)xfer->databuf + 684 xfer->c_skip), 685 len >> 1); 686 xfer->c_skip += len; 687 xfer->c_bcount -= len; 688 } 689 } 690 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 691 chp->ch_flags |= WDCF_IRQ_WAIT; 692 } 693 return 1; 694 695 case PHASE_DATAIN: 696 /* Read data */ 697 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 698 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 699 (xfer->c_flags & C_DMA) != 0) { 700 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 701 if (xfer->c_flags & C_DMA) { 702 ata_dmaerr(drvp); 703 } 704 sc_xfer->error = XS_TIMEOUT; 705 wdc_atapi_reset(chp, xfer); 706 return 1; 707 } 708 if (xfer->c_bcount < len) { 709 printf("wdc_atapi_intr: warning: reading only " 710 "%d of %d bytes\n", xfer->c_bcount, len); 711 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 712 bus_space_read_multi_2(chp->cmd_iot, 713 chp->cmd_ioh, wd_data, 714 (u_int16_t *)((char *)xfer->databuf + 715 xfer->c_skip), 716 xfer->c_bcount >> 1); 717 } else { 718 bus_space_read_multi_stream_2(chp->cmd_iot, 719 chp->cmd_ioh, wd_data, 720 (u_int16_t *)((char *)xfer->databuf + 721 xfer->c_skip), 722 xfer->c_bcount >> 1); 723 } 724 wdcbit_bucket(chp, len - xfer->c_bcount); 725 xfer->c_skip += xfer->c_bcount; 726 xfer->c_bcount = 0; 727 } else { 728 if (drvp->drive_flags & DRIVE_CAP32) { 729 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 730 bus_space_read_multi_4(chp->data32iot, 731 chp->data32ioh, 0, 732 (u_int32_t *)((char *)xfer->databuf + 733 xfer->c_skip), 734 len >> 2); 735 else 736 bus_space_read_multi_stream_4(chp->data32iot, 737 chp->data32ioh, wd_data, 738 (u_int32_t *)((char *)xfer->databuf + 739 xfer->c_skip), 740 len >> 2); 741 742 xfer->c_skip += len & 0xfffffffc; 743 xfer->c_bcount -= len & 0xfffffffc; 744 len = len & 0x03; 745 } 746 if (len > 0) { 747 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 748 bus_space_read_multi_2(chp->cmd_iot, 749 chp->cmd_ioh, wd_data, 750 (u_int16_t *)((char *)xfer->databuf + 751 xfer->c_skip), 752 len >> 1); 753 else 754 bus_space_read_multi_stream_2(chp->cmd_iot, 755 chp->cmd_ioh, wd_data, 756 (u_int16_t *)((char *)xfer->databuf + 757 xfer->c_skip), 758 len >> 1); 759 xfer->c_skip += len; 760 xfer->c_bcount -=len; 761 } 762 } 763 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 764 chp->ch_flags |= WDCF_IRQ_WAIT; 765 } 766 return 1; 767 768 case PHASE_ABORTED: 769 case PHASE_COMPLETED: 770 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 771 if (xfer->c_flags & C_DMA) { 772 xfer->c_bcount -= sc_xfer->datalen; 773 } 774 sc_xfer->resid = xfer->c_bcount; 775 wdc_atapi_phase_complete(xfer); 776 return(1); 777 778 default: 779 if (++retries<500) { 780 DELAY(100); 781 chp->ch_status = bus_space_read_1(chp->cmd_iot, 782 chp->cmd_ioh, wd_status); 783 chp->ch_error = bus_space_read_1(chp->cmd_iot, 784 chp->cmd_ioh, wd_error); 785 goto again; 786 } 787 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 788 if (chp->ch_status & WDCS_ERR) { 789 sc_xfer->error = XS_SHORTSENSE; 790 sc_xfer->sense.atapi_sense = chp->ch_error; 791 } else { 792 if (xfer->c_flags & C_DMA) { 793 ata_dmaerr(drvp); 794 } 795 sc_xfer->error = XS_RESET; 796 wdc_atapi_reset(chp, xfer); 797 return (1); 798 } 799 } 800 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 801 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 802 DEBUG_INTR); 803 wdc_atapi_done(chp, xfer); 804 return (1); 805 } 806 807 int 808 wdc_atapi_ctrl(chp, xfer, irq) 809 struct channel_softc *chp; 810 struct wdc_xfer *xfer; 811 int irq; 812 { 813 struct scsipi_xfer *sc_xfer = xfer->cmd; 814 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 815 char *errstring = NULL; 816 int delay = (irq == 0) ? ATAPI_DELAY : 0; 817 818 /* Ack interrupt done in wait_for_unbusy */ 819 again: 820 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 821 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 822 DEBUG_INTR | DEBUG_FUNCS); 823 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 824 WDSD_IBM | (xfer->drive << 4)); 825 switch (drvp->state) { 826 case PIOMODE: 827 /* Don't try to set mode if controller can't be adjusted */ 828 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 829 goto ready; 830 /* Also don't try if the drive didn't report its mode */ 831 if ((drvp->drive_flags & DRIVE_MODE) == 0) 832 goto ready; 833 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 834 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 835 drvp->state = PIOMODE_WAIT; 836 break; 837 case PIOMODE_WAIT: 838 errstring = "piomode"; 839 if (wait_for_unbusy(chp, delay)) 840 goto timeout; 841 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 842 chp->wdc->irqack(chp); 843 if (chp->ch_status & WDCS_ERR) { 844 if (chp->ch_error == WDCE_ABRT) { 845 /* 846 * some ATAPI drives rejects pio settings. 847 * all we can do here is fall back to PIO 0 848 */ 849 drvp->drive_flags &= ~DRIVE_MODE; 850 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 851 drvp->PIO_mode = 0; 852 drvp->DMA_mode = 0; 853 printf("%s:%d:%d: pio setting rejected, " 854 "falling back to PIO mode 0\n", 855 chp->wdc->sc_dev.dv_xname, 856 chp->channel, xfer->drive); 857 chp->wdc->set_modes(chp); 858 goto ready; 859 } 860 goto error; 861 } 862 /* fall through */ 863 864 case DMAMODE: 865 if (drvp->drive_flags & DRIVE_UDMA) { 866 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 867 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 868 } else if (drvp->drive_flags & DRIVE_DMA) { 869 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 870 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 871 } else { 872 goto ready; 873 } 874 drvp->state = DMAMODE_WAIT; 875 break; 876 case DMAMODE_WAIT: 877 errstring = "dmamode"; 878 if (wait_for_unbusy(chp, delay)) 879 goto timeout; 880 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 881 chp->wdc->irqack(chp); 882 if (chp->ch_status & WDCS_ERR) 883 goto error; 884 /* fall through */ 885 886 case READY: 887 ready: 888 drvp->state = READY; 889 xfer->c_intr = wdc_atapi_intr; 890 callout_stop(&chp->ch_callout); 891 wdc_atapi_start(chp, xfer); 892 return 1; 893 } 894 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 895 chp->ch_flags |= WDCF_IRQ_WAIT; 896 xfer->c_intr = wdc_atapi_ctrl; 897 } else { 898 goto again; 899 } 900 return 1; 901 902 timeout: 903 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 904 return 0; /* IRQ was not for us */ 905 } 906 printf("%s:%d:%d: %s timed out\n", 907 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 908 sc_xfer->error = XS_TIMEOUT; 909 wdc_atapi_reset(chp, xfer); 910 return 1; 911 error: 912 printf("%s:%d:%d: %s ", 913 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 914 errstring); 915 printf("error (0x%x)\n", chp->ch_error); 916 sc_xfer->error = XS_SHORTSENSE; 917 sc_xfer->sense.atapi_sense = chp->ch_error; 918 wdc_atapi_reset(chp, xfer); 919 return 1; 920 } 921 922 void 923 wdc_atapi_phase_complete(xfer) 924 struct wdc_xfer *xfer; 925 { 926 struct channel_softc *chp = xfer->chp; 927 struct scsipi_xfer *sc_xfer = xfer->cmd; 928 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 929 930 /* wait for DSC if needed */ 931 if (drvp->drive_flags & DRIVE_ATAPIST) { 932 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 933 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 934 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 935 if (cold) { 936 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 937 sc_xfer->timeout)) { 938 printf("%s:%d:%d: wait_for_dsc failed\n", 939 chp->wdc->sc_dev.dv_xname, chp->channel, 940 xfer->drive); 941 sc_xfer->error = XS_TIMEOUT; 942 wdc_atapi_reset(chp, xfer); 943 return; 944 } 945 } else { 946 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 947 /* 10ms not enough, try again in 1 tick */ 948 if (xfer->c_dscpoll++ > 949 mstohz(sc_xfer->timeout)) { 950 printf("%s:%d:%d: wait_for_dsc " 951 "failed\n", 952 chp->wdc->sc_dev.dv_xname, 953 chp->channel, xfer->drive); 954 sc_xfer->error = XS_TIMEOUT; 955 wdc_atapi_reset(chp, xfer); 956 return; 957 } 958 callout_reset(&chp->ch_callout, 1, 959 wdc_atapi_polldsc, xfer); 960 return; 961 } 962 } 963 } 964 965 /* 966 * Some drive occasionally set WDCS_ERR with 967 * "ATA illegal length indication" in the error 968 * register. If we read some data the sense is valid 969 * anyway, so don't report the error. 970 */ 971 if (chp->ch_status & WDCS_ERR && 972 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 973 sc_xfer->resid == sc_xfer->datalen)) { 974 /* save the short sense */ 975 sc_xfer->error = XS_SHORTSENSE; 976 sc_xfer->sense.atapi_sense = chp->ch_error; 977 if ((sc_xfer->xs_periph->periph_quirks & 978 PQUIRK_NOSENSE) == 0) { 979 /* ask scsipi to send a REQUEST_SENSE */ 980 sc_xfer->error = XS_BUSY; 981 sc_xfer->status = SCSI_CHECK; 982 } else if (chp->wdc->dma_status & 983 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 984 ata_dmaerr(drvp); 985 sc_xfer->error = XS_RESET; 986 wdc_atapi_reset(chp, xfer); 987 return; 988 } 989 } 990 if (xfer->c_bcount != 0) { 991 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 992 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 993 } 994 #ifdef DIAGNOSTIC 995 if (xfer->c_bcount < 0) { 996 printf("wdc_atapi_intr warning: bcount value " 997 "is %d after io\n", xfer->c_bcount); 998 } 999 #endif 1000 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 1001 "error 0x%x sense 0x%x\n", sc_xfer->error, 1002 sc_xfer->sense.atapi_sense), DEBUG_INTR); 1003 wdc_atapi_done(chp, xfer); 1004 } 1005 1006 void 1007 wdc_atapi_done(chp, xfer) 1008 struct channel_softc *chp; 1009 struct wdc_xfer *xfer; 1010 { 1011 struct scsipi_xfer *sc_xfer = xfer->cmd; 1012 1013 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 1014 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 1015 (u_int)xfer->c_flags), DEBUG_XFERS); 1016 callout_stop(&chp->ch_callout); 1017 /* remove this command from xfer queue */ 1018 wdc_free_xfer(chp, xfer); 1019 1020 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 1021 scsipi_done(sc_xfer); 1022 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 1023 chp->ch_flags), DEBUG_XFERS); 1024 wdcstart(chp); 1025 } 1026 1027 void 1028 wdc_atapi_reset(chp, xfer) 1029 struct channel_softc *chp; 1030 struct wdc_xfer *xfer; 1031 { 1032 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1033 struct scsipi_xfer *sc_xfer = xfer->cmd; 1034 1035 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1036 drvp->state = 0; 1037 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1038 printf("%s:%d:%d: reset failed\n", 1039 chp->wdc->sc_dev.dv_xname, chp->channel, 1040 xfer->drive); 1041 sc_xfer->error = XS_SELTIMEOUT; 1042 } 1043 wdc_atapi_done(chp, xfer); 1044 return; 1045 } 1046 1047 void 1048 wdc_atapi_polldsc(arg) 1049 void *arg; 1050 { 1051 wdc_atapi_phase_complete(arg); 1052 } 1053
Indexes created Tue Sep 23 14:10:03 GMT 2025