atapi_wdc.c revision 1.57
1 /* $NetBSD: atapi_wdc.c,v 1.57 2003/09/19 21:36:09 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 1.57 2003/09/19 21:36:09 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, 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, id) 189 struct scsipi_channel *chan; 190 int drive; 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 wdccommandshort(chp, drive, ATAPI_SOFT_RESET); 208 chp->ch_drive[drive].state = 0; 209 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 210 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 211 "failed for drive %s:%d:%d\n", 212 chp->wdc->sc_dev.dv_xname, chp->channel, drive), 213 DEBUG_PROBE); 214 return -1; 215 } 216 217 /* Some ATAPI devices need a bit more time after software reset. */ 218 delay(5000); 219 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 220 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 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 return 0; 227 } 228 229 void 230 wdc_atapi_probe_device(sc, target) 231 struct atapibus_softc *sc; 232 int target; 233 { 234 struct scsipi_channel *chan = sc->sc_channel; 235 struct scsipi_periph *periph; 236 struct ataparams ids; 237 struct ataparams *id = &ids; 238 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 239 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 240 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 241 struct scsipibus_attach_args sa; 242 char serial_number[21], model[41], firmware_revision[9]; 243 244 /* skip if already attached */ 245 if (scsipi_lookup_periph(chan, target, 0) != NULL) 246 return; 247 248 if (wdc_atapi_get_params(chan, target, id) == 0) { 249 #ifdef ATAPI_DEBUG_PROBE 250 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 251 sc->sc_dev.dv_xname, target, 252 id->atap_config & ATAPI_CFG_CMD_MASK, 253 id->atap_config & ATAPI_CFG_DRQ_MASK); 254 #endif 255 periph = scsipi_alloc_periph(M_NOWAIT); 256 if (periph == NULL) { 257 printf("%s: unable to allocate periph for drive %d\n", 258 sc->sc_dev.dv_xname, target); 259 return; 260 } 261 periph->periph_dev = NULL; 262 periph->periph_channel = chan; 263 periph->periph_switch = &atapi_probe_periphsw; 264 periph->periph_target = target; 265 periph->periph_lun = 0; 266 periph->periph_quirks = PQUIRK_ONLYBIG; 267 268 #ifdef SCSIPI_DEBUG 269 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 270 SCSIPI_DEBUG_TARGET == target) 271 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 272 #endif 273 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 274 if (id->atap_config & ATAPI_CFG_REMOV) 275 periph->periph_flags |= PERIPH_REMOVABLE; 276 if (periph->periph_type == T_SEQUENTIAL) 277 drvp->drive_flags |= DRIVE_ATAPIST; 278 279 sa.sa_periph = periph; 280 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 281 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 282 T_REMOV : T_FIXED; 283 scsipi_strvis(model, 40, id->atap_model, 40); 284 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 285 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 286 sa.sa_inqbuf.vendor = model; 287 sa.sa_inqbuf.product = serial_number; 288 sa.sa_inqbuf.revision = firmware_revision; 289 290 /* 291 * Determine the operating mode capabilities of the device. 292 */ 293 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 294 periph->periph_cap |= PERIPH_CAP_CMD16; 295 /* XXX This is gross. */ 296 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 297 298 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 299 300 if (drvp->drv_softc) 301 wdc_probe_caps(drvp); 302 } 303 } 304 305 void 306 wdc_atapi_scsipi_request(chan, req, arg) 307 struct scsipi_channel *chan; 308 scsipi_adapter_req_t req; 309 void *arg; 310 { 311 struct scsipi_adapter *adapt = chan->chan_adapter; 312 struct scsipi_periph *periph; 313 struct scsipi_xfer *sc_xfer; 314 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 315 struct wdc_xfer *xfer; 316 int channel = chan->chan_channel; 317 int drive, s; 318 319 switch (req) { 320 case ADAPTER_REQ_RUN_XFER: 321 sc_xfer = arg; 322 periph = sc_xfer->xs_periph; 323 drive = periph->periph_target; 324 325 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 326 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 327 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 328 sc_xfer->error = XS_DRIVER_STUFFUP; 329 scsipi_done(sc_xfer); 330 return; 331 } 332 333 xfer = wdc_get_xfer(WDC_NOSLEEP); 334 if (xfer == NULL) { 335 sc_xfer->error = XS_RESOURCE_SHORTAGE; 336 scsipi_done(sc_xfer); 337 return; 338 } 339 340 if (sc_xfer->xs_control & XS_CTL_POLL) 341 xfer->c_flags |= C_POLL; 342 xfer->drive = drive; 343 xfer->c_flags |= C_ATAPI; 344 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 345 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 346 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 347 /* 348 * DVD authentication commands must always be done in 349 * PIO mode. 350 */ 351 xfer->c_flags |= C_FORCEPIO; 352 } 353 /* 354 * DMA can't deal with transfers which are not a multiple of 355 * 2 bytes. It's a bug to request such transfers for ATAPI 356 * but as the request can come from userland, we have to 357 * protect against it. 358 * Also some devices seems to not handle DMA xfers of less than 359 * 4 bytes. 360 */ 361 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 362 xfer->c_flags |= C_FORCEPIO; 363 364 xfer->cmd = sc_xfer; 365 xfer->databuf = sc_xfer->data; 366 xfer->c_bcount = sc_xfer->datalen; 367 xfer->c_start = wdc_atapi_start; 368 xfer->c_intr = wdc_atapi_intr; 369 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 370 xfer->c_dscpoll = 0; 371 s = splbio(); 372 wdc_exec_xfer(wdc->channels[channel], xfer); 373 #ifdef DIAGNOSTIC 374 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 375 (sc_xfer->xs_status & XS_STS_DONE) == 0) 376 panic("wdc_atapi_scsipi_request: polled command " 377 "not done"); 378 #endif 379 splx(s); 380 return; 381 382 default: 383 /* Not supported, nothing to do. */ 384 ; 385 } 386 } 387 388 void 389 wdc_atapi_start(chp, xfer) 390 struct channel_softc *chp; 391 struct wdc_xfer *xfer; 392 { 393 struct scsipi_xfer *sc_xfer = xfer->cmd; 394 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 395 396 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 397 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 398 sc_xfer->xs_control), DEBUG_XFERS); 399 /* Adjust C_DMA, it may have changed if we are requesting sense */ 400 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 401 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 402 if (drvp->n_xfers <= NXFER) 403 drvp->n_xfers++; 404 xfer->c_flags |= C_DMA; 405 } else { 406 xfer->c_flags &= ~C_DMA; 407 } 408 /* start timeout machinery */ 409 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 410 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 411 wdctimeout, chp); 412 /* Do control operations specially. */ 413 if (drvp->state < READY) { 414 if (drvp->state != RESET) { 415 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 416 chp->wdc->sc_dev.dv_xname, chp->channel, 417 xfer->drive, drvp->state); 418 panic("wdc_atapi_start: bad state"); 419 } 420 drvp->state = PIOMODE; 421 wdc_atapi_ctrl(chp, xfer, 0); 422 return; 423 } 424 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 425 WDSD_IBM | (xfer->drive << 4)); 426 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 427 printf("wdc_atapi_start: not ready, st = %02x\n", 428 chp->ch_status); 429 sc_xfer->error = XS_TIMEOUT; 430 wdc_atapi_reset(chp, xfer); 431 return; 432 } 433 434 /* 435 * Even with WDCS_ERR, the device should accept a command packet 436 * Limit length to what can be stuffed into the cylinder register 437 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 438 * but not all devices do that and it's not obvious from the 439 * ATAPI spec that that behaviour should be expected. If more 440 * data is necessary, multiple data transfer phases will be done. 441 */ 442 443 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 444 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 445 0, 0, 0, 446 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 447 448 /* 449 * If there is no interrupt for CMD input, busy-wait for it (done in 450 * the interrupt routine. If it is a polled command, call the interrupt 451 * routine until command is done. 452 */ 453 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 454 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 455 /* Wait for at last 400ns for status bit to be valid */ 456 DELAY(1); 457 if (chp->ch_flags & WDCF_DMA_WAIT) { 458 wdc_dmawait(chp, xfer, sc_xfer->timeout); 459 chp->ch_flags &= ~WDCF_DMA_WAIT; 460 } 461 wdc_atapi_intr(chp, xfer, 0); 462 } else { 463 chp->ch_flags |= WDCF_IRQ_WAIT; 464 } 465 if (sc_xfer->xs_control & XS_CTL_POLL) { 466 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 467 /* Wait for at last 400ns for status bit to be valid */ 468 DELAY(1); 469 wdc_atapi_intr(chp, xfer, 0); 470 } 471 } 472 } 473 474 int 475 wdc_atapi_intr(chp, xfer, irq) 476 struct channel_softc *chp; 477 struct wdc_xfer *xfer; 478 int irq; 479 { 480 struct scsipi_xfer *sc_xfer = xfer->cmd; 481 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 482 int len, phase, i, retries=0; 483 int ire; 484 int dma_flags = 0; 485 void *cmd; 486 487 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 488 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 489 490 /* Is it not a transfer, but a control operation? */ 491 if (drvp->state < READY) { 492 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 493 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 494 drvp->state); 495 panic("wdc_atapi_intr: bad state"); 496 } 497 /* 498 * If we missed an interrupt in a PIO transfer, reset and restart. 499 * Don't try to continue transfer, we may have missed cycles. 500 */ 501 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 502 sc_xfer->error = XS_TIMEOUT; 503 wdc_atapi_reset(chp, xfer); 504 return 1; 505 } 506 507 /* Ack interrupt done in wait_for_unbusy */ 508 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 509 WDSD_IBM | (xfer->drive << 4)); 510 if (wait_for_unbusy(chp, 511 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 512 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 513 return 0; /* IRQ was not for us */ 514 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 515 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 516 xfer->c_bcount, xfer->c_skip); 517 if (xfer->c_flags & C_DMA) { 518 ata_dmaerr(drvp); 519 } 520 sc_xfer->error = XS_TIMEOUT; 521 wdc_atapi_reset(chp, xfer); 522 return 1; 523 } 524 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 525 chp->wdc->irqack(chp); 526 527 /* 528 * If we missed an IRQ and were using DMA, flag it as a DMA error 529 * and reset device. 530 */ 531 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 532 ata_dmaerr(drvp); 533 sc_xfer->error = XS_RESET; 534 wdc_atapi_reset(chp, xfer); 535 return (1); 536 } 537 /* 538 * if the request sense command was aborted, report the short sense 539 * previously recorded, else continue normal processing 540 */ 541 542 if (xfer->c_flags & C_DMA) 543 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 544 ? WDC_DMA_READ : 0; 545 again: 546 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 547 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 548 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 549 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 550 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 551 "ire 0x%x :", xfer->c_bcount, 552 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 553 554 switch (phase) { 555 case PHASE_CMDOUT: 556 cmd = sc_xfer->cmd; 557 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 558 /* Init the DMA channel if necessary */ 559 if (xfer->c_flags & C_DMA) { 560 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 561 chp->channel, xfer->drive, 562 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 563 sc_xfer->error = XS_DRIVER_STUFFUP; 564 break; 565 } 566 } 567 /* send packet command */ 568 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 569 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 570 if (drvp->drive_flags & DRIVE_CAP32) 571 bus_space_write_multi_4(chp->data32iot, 572 chp->data32ioh, 0, (u_int32_t *)cmd, 573 sc_xfer->cmdlen >> 2); 574 else 575 bus_space_write_multi_2(chp->cmd_iot, 576 chp->cmd_ioh, wd_data, (u_int16_t *)cmd, 577 sc_xfer->cmdlen >> 1); 578 } else { 579 if (drvp->drive_flags & DRIVE_CAP32) 580 bus_space_write_multi_stream_4(chp->data32iot, 581 chp->data32ioh, 0, (u_int32_t *)cmd, 582 sc_xfer->cmdlen >> 2); 583 else 584 bus_space_write_multi_stream_2(chp->cmd_iot, 585 chp->cmd_ioh, wd_data, (u_int16_t *)cmd, 586 sc_xfer->cmdlen >> 1); 587 } 588 /* Start the DMA channel if necessary */ 589 if (xfer->c_flags & C_DMA) { 590 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 591 chp->channel, xfer->drive); 592 chp->ch_flags |= WDCF_DMA_WAIT; 593 } 594 595 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 596 chp->ch_flags |= WDCF_IRQ_WAIT; 597 } 598 return 1; 599 600 case PHASE_DATAOUT: 601 /* write data */ 602 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 603 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 604 (xfer->c_flags & C_DMA) != 0) { 605 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 606 if (xfer->c_flags & C_DMA) { 607 ata_dmaerr(drvp); 608 } 609 sc_xfer->error = XS_TIMEOUT; 610 wdc_atapi_reset(chp, xfer); 611 return 1; 612 } 613 if (xfer->c_bcount < len) { 614 printf("wdc_atapi_intr: warning: write only " 615 "%d of %d requested bytes\n", xfer->c_bcount, len); 616 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 617 bus_space_write_multi_2(chp->cmd_iot, 618 chp->cmd_ioh, wd_data, 619 (u_int16_t *)((char *)xfer->databuf + 620 xfer->c_skip), 621 xfer->c_bcount >> 1); 622 } else { 623 bus_space_write_multi_stream_2(chp->cmd_iot, 624 chp->cmd_ioh, wd_data, 625 (u_int16_t *)((char *)xfer->databuf + 626 xfer->c_skip), 627 xfer->c_bcount >> 1); 628 } 629 for (i = xfer->c_bcount; i < len; i += 2) 630 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 631 wd_data, 0); 632 xfer->c_skip += xfer->c_bcount; 633 xfer->c_bcount = 0; 634 } else { 635 if (drvp->drive_flags & DRIVE_CAP32) { 636 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 637 bus_space_write_multi_4(chp->data32iot, 638 chp->data32ioh, 0, 639 (u_int32_t *)((char *)xfer->databuf + 640 xfer->c_skip), 641 len >> 2); 642 else 643 bus_space_write_multi_stream_4(chp->data32iot, 644 chp->data32ioh, wd_data, 645 (u_int32_t *)((char *)xfer->databuf + 646 xfer->c_skip), 647 len >> 2); 648 649 xfer->c_skip += len & 0xfffffffc; 650 xfer->c_bcount -= len & 0xfffffffc; 651 len = len & 0x03; 652 } 653 if (len > 0) { 654 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 655 bus_space_write_multi_2(chp->cmd_iot, 656 chp->cmd_ioh, wd_data, 657 (u_int16_t *)((char *)xfer->databuf + 658 xfer->c_skip), 659 len >> 1); 660 else 661 bus_space_write_multi_stream_2(chp->cmd_iot, 662 chp->cmd_ioh, wd_data, 663 (u_int16_t *)((char *)xfer->databuf + 664 xfer->c_skip), 665 len >> 1); 666 xfer->c_skip += len; 667 xfer->c_bcount -= len; 668 } 669 } 670 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 671 chp->ch_flags |= WDCF_IRQ_WAIT; 672 } 673 return 1; 674 675 case PHASE_DATAIN: 676 /* Read data */ 677 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 678 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 679 (xfer->c_flags & C_DMA) != 0) { 680 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 681 if (xfer->c_flags & C_DMA) { 682 ata_dmaerr(drvp); 683 } 684 sc_xfer->error = XS_TIMEOUT; 685 wdc_atapi_reset(chp, xfer); 686 return 1; 687 } 688 if (xfer->c_bcount < len) { 689 printf("wdc_atapi_intr: warning: reading only " 690 "%d of %d bytes\n", xfer->c_bcount, len); 691 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 692 bus_space_read_multi_2(chp->cmd_iot, 693 chp->cmd_ioh, wd_data, 694 (u_int16_t *)((char *)xfer->databuf + 695 xfer->c_skip), 696 xfer->c_bcount >> 1); 697 } else { 698 bus_space_read_multi_stream_2(chp->cmd_iot, 699 chp->cmd_ioh, wd_data, 700 (u_int16_t *)((char *)xfer->databuf + 701 xfer->c_skip), 702 xfer->c_bcount >> 1); 703 } 704 wdcbit_bucket(chp, len - xfer->c_bcount); 705 xfer->c_skip += xfer->c_bcount; 706 xfer->c_bcount = 0; 707 } else { 708 if (drvp->drive_flags & DRIVE_CAP32) { 709 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 710 bus_space_read_multi_4(chp->data32iot, 711 chp->data32ioh, 0, 712 (u_int32_t *)((char *)xfer->databuf + 713 xfer->c_skip), 714 len >> 2); 715 else 716 bus_space_read_multi_stream_4(chp->data32iot, 717 chp->data32ioh, wd_data, 718 (u_int32_t *)((char *)xfer->databuf + 719 xfer->c_skip), 720 len >> 2); 721 722 xfer->c_skip += len & 0xfffffffc; 723 xfer->c_bcount -= len & 0xfffffffc; 724 len = len & 0x03; 725 } 726 if (len > 0) { 727 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 728 bus_space_read_multi_2(chp->cmd_iot, 729 chp->cmd_ioh, wd_data, 730 (u_int16_t *)((char *)xfer->databuf + 731 xfer->c_skip), 732 len >> 1); 733 else 734 bus_space_read_multi_stream_2(chp->cmd_iot, 735 chp->cmd_ioh, wd_data, 736 (u_int16_t *)((char *)xfer->databuf + 737 xfer->c_skip), 738 len >> 1); 739 xfer->c_skip += len; 740 xfer->c_bcount -=len; 741 } 742 } 743 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 744 chp->ch_flags |= WDCF_IRQ_WAIT; 745 } 746 return 1; 747 748 case PHASE_ABORTED: 749 case PHASE_COMPLETED: 750 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 751 if (xfer->c_flags & C_DMA) { 752 xfer->c_bcount -= sc_xfer->datalen; 753 } 754 sc_xfer->resid = xfer->c_bcount; 755 wdc_atapi_phase_complete(xfer); 756 return(1); 757 758 default: 759 if (++retries<500) { 760 DELAY(100); 761 chp->ch_status = bus_space_read_1(chp->cmd_iot, 762 chp->cmd_ioh, wd_status); 763 chp->ch_error = bus_space_read_1(chp->cmd_iot, 764 chp->cmd_ioh, wd_error); 765 goto again; 766 } 767 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 768 if (chp->ch_status & WDCS_ERR) { 769 sc_xfer->error = XS_SHORTSENSE; 770 sc_xfer->sense.atapi_sense = chp->ch_error; 771 } else { 772 if (xfer->c_flags & C_DMA) { 773 ata_dmaerr(drvp); 774 } 775 sc_xfer->error = XS_RESET; 776 wdc_atapi_reset(chp, xfer); 777 return (1); 778 } 779 } 780 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 781 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 782 DEBUG_INTR); 783 wdc_atapi_done(chp, xfer); 784 return (1); 785 } 786 787 int 788 wdc_atapi_ctrl(chp, xfer, irq) 789 struct channel_softc *chp; 790 struct wdc_xfer *xfer; 791 int irq; 792 { 793 struct scsipi_xfer *sc_xfer = xfer->cmd; 794 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 795 char *errstring = NULL; 796 int delay = (irq == 0) ? ATAPI_DELAY : 0; 797 798 /* Ack interrupt done in wait_for_unbusy */ 799 again: 800 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 801 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 802 DEBUG_INTR | DEBUG_FUNCS); 803 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 804 WDSD_IBM | (xfer->drive << 4)); 805 switch (drvp->state) { 806 case PIOMODE: 807 /* Don't try to set mode if controller can't be adjusted */ 808 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 809 goto ready; 810 /* Also don't try if the drive didn't report its mode */ 811 if ((drvp->drive_flags & DRIVE_MODE) == 0) 812 goto ready; 813 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 814 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 815 drvp->state = PIOMODE_WAIT; 816 break; 817 case PIOMODE_WAIT: 818 errstring = "piomode"; 819 if (wait_for_unbusy(chp, delay)) 820 goto timeout; 821 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 822 chp->wdc->irqack(chp); 823 if (chp->ch_status & WDCS_ERR) { 824 if (chp->ch_error == WDCE_ABRT) { 825 /* 826 * some ATAPI drives rejects pio settings. 827 * all we can do here is fall back to PIO 0 828 */ 829 drvp->drive_flags &= ~DRIVE_MODE; 830 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 831 drvp->PIO_mode = 0; 832 drvp->DMA_mode = 0; 833 printf("%s:%d:%d: pio setting rejected, " 834 "falling back to PIO mode 0\n", 835 chp->wdc->sc_dev.dv_xname, 836 chp->channel, xfer->drive); 837 chp->wdc->set_modes(chp); 838 goto ready; 839 } 840 goto error; 841 } 842 /* fall through */ 843 844 case DMAMODE: 845 if (drvp->drive_flags & DRIVE_UDMA) { 846 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 847 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 848 } else if (drvp->drive_flags & DRIVE_DMA) { 849 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 850 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 851 } else { 852 goto ready; 853 } 854 drvp->state = DMAMODE_WAIT; 855 break; 856 case DMAMODE_WAIT: 857 errstring = "dmamode"; 858 if (wait_for_unbusy(chp, delay)) 859 goto timeout; 860 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 861 chp->wdc->irqack(chp); 862 if (chp->ch_status & WDCS_ERR) 863 goto error; 864 /* fall through */ 865 866 case READY: 867 ready: 868 drvp->state = READY; 869 xfer->c_intr = wdc_atapi_intr; 870 callout_stop(&chp->ch_callout); 871 wdc_atapi_start(chp, xfer); 872 return 1; 873 } 874 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 875 chp->ch_flags |= WDCF_IRQ_WAIT; 876 xfer->c_intr = wdc_atapi_ctrl; 877 } else { 878 goto again; 879 } 880 return 1; 881 882 timeout: 883 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 884 return 0; /* IRQ was not for us */ 885 } 886 printf("%s:%d:%d: %s timed out\n", 887 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 888 sc_xfer->error = XS_TIMEOUT; 889 wdc_atapi_reset(chp, xfer); 890 return 1; 891 error: 892 printf("%s:%d:%d: %s ", 893 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 894 errstring); 895 printf("error (0x%x)\n", chp->ch_error); 896 sc_xfer->error = XS_SHORTSENSE; 897 sc_xfer->sense.atapi_sense = chp->ch_error; 898 wdc_atapi_reset(chp, xfer); 899 return 1; 900 } 901 902 void 903 wdc_atapi_phase_complete(xfer) 904 struct wdc_xfer *xfer; 905 { 906 struct channel_softc *chp = xfer->chp; 907 struct scsipi_xfer *sc_xfer = xfer->cmd; 908 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 909 910 /* wait for DSC if needed */ 911 if (drvp->drive_flags & DRIVE_ATAPIST) { 912 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 913 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 914 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 915 #if 1 916 if (cold) 917 panic("wdc_atapi_phase_complete: cold"); 918 #endif 919 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 920 /* 10ms not enough, try again in 1 tick */ 921 if (xfer->c_dscpoll++ > 922 mstohz(sc_xfer->timeout)) { 923 printf("%s:%d:%d: wait_for_dsc failed\n", 924 chp->wdc->sc_dev.dv_xname, chp->channel, 925 xfer->drive); 926 sc_xfer->error = XS_TIMEOUT; 927 wdc_atapi_reset(chp, xfer); 928 } else 929 callout_reset(&chp->ch_callout, 1, 930 wdc_atapi_polldsc, xfer); 931 return; 932 } 933 } 934 935 /* 936 * Some drive occasionally set WDCS_ERR with 937 * "ATA illegal length indication" in the error 938 * register. If we read some data the sense is valid 939 * anyway, so don't report the error. 940 */ 941 if (chp->ch_status & WDCS_ERR && 942 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 943 sc_xfer->resid == sc_xfer->datalen)) { 944 /* save the short sense */ 945 sc_xfer->error = XS_SHORTSENSE; 946 sc_xfer->sense.atapi_sense = chp->ch_error; 947 if ((sc_xfer->xs_periph->periph_quirks & 948 PQUIRK_NOSENSE) == 0) { 949 /* ask scsipi to send a REQUEST_SENSE */ 950 sc_xfer->error = XS_BUSY; 951 sc_xfer->status = SCSI_CHECK; 952 } else if (chp->wdc->dma_status & 953 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 954 ata_dmaerr(drvp); 955 sc_xfer->error = XS_RESET; 956 wdc_atapi_reset(chp, xfer); 957 return; 958 } 959 } 960 if (xfer->c_bcount != 0) { 961 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 962 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 963 } 964 #ifdef DIAGNOSTIC 965 if (xfer->c_bcount < 0) { 966 printf("wdc_atapi_intr warning: bcount value " 967 "is %d after io\n", xfer->c_bcount); 968 } 969 #endif 970 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 971 "error 0x%x sense 0x%x\n", sc_xfer->error, 972 sc_xfer->sense.atapi_sense), DEBUG_INTR); 973 wdc_atapi_done(chp, xfer); 974 } 975 976 void 977 wdc_atapi_done(chp, xfer) 978 struct channel_softc *chp; 979 struct wdc_xfer *xfer; 980 { 981 struct scsipi_xfer *sc_xfer = xfer->cmd; 982 983 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 984 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 985 (u_int)xfer->c_flags), DEBUG_XFERS); 986 callout_stop(&chp->ch_callout); 987 /* remove this command from xfer queue */ 988 wdc_free_xfer(chp, xfer); 989 990 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 991 scsipi_done(sc_xfer); 992 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 993 chp->ch_flags), DEBUG_XFERS); 994 wdcstart(chp); 995 } 996 997 void 998 wdc_atapi_reset(chp, xfer) 999 struct channel_softc *chp; 1000 struct wdc_xfer *xfer; 1001 { 1002 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1003 struct scsipi_xfer *sc_xfer = xfer->cmd; 1004 1005 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1006 drvp->state = 0; 1007 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1008 printf("%s:%d:%d: reset failed\n", 1009 chp->wdc->sc_dev.dv_xname, chp->channel, 1010 xfer->drive); 1011 sc_xfer->error = XS_SELTIMEOUT; 1012 } 1013 wdc_atapi_done(chp, xfer); 1014 return; 1015 } 1016 1017 void 1018 wdc_atapi_polldsc(arg) 1019 void *arg; 1020 { 1021 wdc_atapi_phase_complete(arg); 1022 } 1023
Indexes created Wed Sep 24 05:09:52 GMT 2025