1 /* $NetBSD: atapi_wdc.c,v 1.52 2002/05/18 14:49:55 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 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 1.52 2002/05/18 14:49:55 bouyer 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; 280 281 #ifdef SCSIPI_DEBUG 282 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 283 SCSIPI_DEBUG_TARGET == target) 284 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 285 #endif 286 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 287 if (id->atap_config & ATAPI_CFG_REMOV) 288 periph->periph_flags |= PERIPH_REMOVABLE; 289 if (periph->periph_type == T_SEQUENTIAL) 290 drvp->drive_flags |= DRIVE_ATAPIST; 291 292 sa.sa_periph = periph; 293 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 294 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 295 T_REMOV : T_FIXED; 296 scsipi_strvis(model, 40, id->atap_model, 40); 297 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 298 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 299 sa.sa_inqbuf.vendor = model; 300 sa.sa_inqbuf.product = serial_number; 301 sa.sa_inqbuf.revision = firmware_revision; 302 303 /* 304 * Determine the operating mode capabilities of the device. 305 */ 306 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 307 periph->periph_cap |= PERIPH_CAP_CMD16; 308 /* XXX This is gross. */ 309 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 310 311 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 312 313 if (drvp->drv_softc) 314 wdc_probe_caps(drvp); 315 } 316 } 317 318 void 319 wdc_atapi_scsipi_request(chan, req, arg) 320 struct scsipi_channel *chan; 321 scsipi_adapter_req_t req; 322 void *arg; 323 { 324 struct scsipi_adapter *adapt = chan->chan_adapter; 325 struct scsipi_periph *periph; 326 struct scsipi_xfer *sc_xfer; 327 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 328 struct wdc_xfer *xfer; 329 int channel = chan->chan_channel; 330 int drive, s; 331 332 switch (req) { 333 case ADAPTER_REQ_RUN_XFER: 334 sc_xfer = arg; 335 periph = sc_xfer->xs_periph; 336 drive = periph->periph_target; 337 338 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 339 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 340 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 341 sc_xfer->error = XS_DRIVER_STUFFUP; 342 scsipi_done(sc_xfer); 343 return; 344 } 345 346 xfer = wdc_get_xfer(WDC_NOSLEEP); 347 if (xfer == NULL) { 348 sc_xfer->error = XS_RESOURCE_SHORTAGE; 349 scsipi_done(sc_xfer); 350 return; 351 } 352 353 if (sc_xfer->xs_control & XS_CTL_POLL) 354 xfer->c_flags |= C_POLL; 355 xfer->drive = drive; 356 xfer->c_flags |= C_ATAPI; 357 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 358 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 359 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 360 /* 361 * DVD authentication commands must always be done in 362 * PIO mode. 363 */ 364 xfer->c_flags |= C_FORCEPIO; 365 } 366 /* 367 * DMA can't deal with transfers which are not a multiple of 368 * 2 bytes. It's a bug to request such transfers for ATAPI 369 * but as the request can come from userland, we have to 370 * protect against it. 371 */ 372 if (sc_xfer->datalen & 0x01) 373 xfer->c_flags |= C_FORCEPIO; 374 375 xfer->cmd = sc_xfer; 376 xfer->databuf = sc_xfer->data; 377 xfer->c_bcount = sc_xfer->datalen; 378 xfer->c_start = wdc_atapi_start; 379 xfer->c_intr = wdc_atapi_intr; 380 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 381 xfer->c_dscpoll = 0; 382 s = splbio(); 383 wdc_exec_xfer(wdc->channels[channel], xfer); 384 #ifdef DIAGNOSTIC 385 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 386 (sc_xfer->xs_status & XS_STS_DONE) == 0) 387 panic("wdc_atapi_scsipi_request: polled command " 388 "not done"); 389 #endif 390 splx(s); 391 return; 392 393 default: 394 /* Not supported, nothing to do. */ 395 ; 396 } 397 } 398 399 void 400 wdc_atapi_start(chp, xfer) 401 struct channel_softc *chp; 402 struct wdc_xfer *xfer; 403 { 404 struct scsipi_xfer *sc_xfer = xfer->cmd; 405 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 406 407 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 408 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 409 sc_xfer->xs_control), DEBUG_XFERS); 410 /* Adjust C_DMA, it may have changed if we are requesting sense */ 411 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 412 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 413 if (drvp->n_xfers <= NXFER) 414 drvp->n_xfers++; 415 xfer->c_flags |= C_DMA; 416 } else { 417 xfer->c_flags &= ~C_DMA; 418 } 419 /* start timeout machinery */ 420 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 421 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 422 wdctimeout, chp); 423 /* Do control operations specially. */ 424 if (drvp->state < READY) { 425 if (drvp->state != RESET) { 426 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 427 chp->wdc->sc_dev.dv_xname, chp->channel, 428 xfer->drive, drvp->state); 429 panic("wdc_atapi_start: bad state"); 430 } 431 drvp->state = PIOMODE; 432 wdc_atapi_ctrl(chp, xfer, 0); 433 return; 434 } 435 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 436 WDSD_IBM | (xfer->drive << 4)); 437 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 438 printf("wdc_atapi_start: not ready, st = %02x\n", 439 chp->ch_status); 440 sc_xfer->error = XS_TIMEOUT; 441 wdc_atapi_reset(chp, xfer); 442 return; 443 } 444 445 /* 446 * Even with WDCS_ERR, the device should accept a command packet 447 * Limit length to what can be stuffed into the cylinder register 448 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 449 * but not all devices do that and it's not obvious from the 450 * ATAPI spec that that behaviour should be expected. If more 451 * data is necessary, multiple data transfer phases will be done. 452 */ 453 454 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 455 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 456 0, 0, 0, 457 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 458 459 /* 460 * If there is no interrupt for CMD input, busy-wait for it (done in 461 * the interrupt routine. If it is a polled command, call the interrupt 462 * routine until command is done. 463 */ 464 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 465 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 466 /* Wait for at last 400ns for status bit to be valid */ 467 DELAY(1); 468 if (chp->ch_flags & WDCF_DMA_WAIT) { 469 wdc_dmawait(chp, xfer, sc_xfer->timeout); 470 chp->ch_flags &= ~WDCF_DMA_WAIT; 471 } 472 wdc_atapi_intr(chp, xfer, 0); 473 } else { 474 chp->ch_flags |= WDCF_IRQ_WAIT; 475 } 476 if (sc_xfer->xs_control & XS_CTL_POLL) { 477 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 478 /* Wait for at last 400ns for status bit to be valid */ 479 DELAY(1); 480 wdc_atapi_intr(chp, xfer, 0); 481 } 482 } 483 } 484 485 int 486 wdc_atapi_intr(chp, xfer, irq) 487 struct channel_softc *chp; 488 struct wdc_xfer *xfer; 489 int irq; 490 { 491 struct scsipi_xfer *sc_xfer = xfer->cmd; 492 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 493 int len, phase, i, retries=0; 494 int ire; 495 int dma_flags = 0; 496 void *cmd; 497 498 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 499 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 500 501 /* Is it not a transfer, but a control operation? */ 502 if (drvp->state < READY) { 503 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 504 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 505 drvp->state); 506 panic("wdc_atapi_intr: bad state\n"); 507 } 508 /* 509 * If we missed an interrupt in a PIO transfer, reset and restart. 510 * Don't try to continue transfer, we may have missed cycles. 511 */ 512 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 513 sc_xfer->error = XS_TIMEOUT; 514 wdc_atapi_reset(chp, xfer); 515 return 1; 516 } 517 518 /* Ack interrupt done in wait_for_unbusy */ 519 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 520 WDSD_IBM | (xfer->drive << 4)); 521 if (wait_for_unbusy(chp, 522 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 523 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 524 return 0; /* IRQ was not for us */ 525 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 526 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 527 xfer->c_bcount, xfer->c_skip); 528 if (xfer->c_flags & C_DMA) { 529 ata_dmaerr(drvp); 530 } 531 sc_xfer->error = XS_TIMEOUT; 532 wdc_atapi_reset(chp, xfer); 533 return 1; 534 } 535 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 536 chp->wdc->irqack(chp); 537 538 /* 539 * If we missed an IRQ and were using DMA, flag it as a DMA error 540 * and reset device. 541 */ 542 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 543 ata_dmaerr(drvp); 544 sc_xfer->error = XS_RESET; 545 wdc_atapi_reset(chp, xfer); 546 return (1); 547 } 548 /* 549 * if the request sense command was aborted, report the short sense 550 * previously recorded, else continue normal processing 551 */ 552 553 if (xfer->c_flags & C_DMA) 554 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 555 ? WDC_DMA_READ : 0; 556 again: 557 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 558 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 559 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 560 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 561 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 562 "ire 0x%x :", xfer->c_bcount, 563 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 564 565 switch (phase) { 566 case PHASE_CMDOUT: 567 cmd = sc_xfer->cmd; 568 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 569 /* Init the DMA channel if necessary */ 570 if (xfer->c_flags & C_DMA) { 571 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 572 chp->channel, xfer->drive, 573 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 574 sc_xfer->error = XS_DRIVER_STUFFUP; 575 break; 576 } 577 } 578 /* send packet command */ 579 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 580 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 581 if (drvp->drive_flags & DRIVE_CAP32) { 582 bus_space_write_multi_4(chp->data32iot, 583 chp->data32ioh, 0, 584 (u_int32_t *)cmd, 585 sc_xfer->cmdlen >> 2); 586 } else { 587 bus_space_write_multi_2(chp->cmd_iot, 588 chp->cmd_ioh, wd_data, 589 (u_int16_t *)cmd, 590 sc_xfer->cmdlen >> 1); 591 } 592 } else { 593 if (drvp->drive_flags & DRIVE_CAP32) { 594 bus_space_write_multi_stream_4(chp->data32iot, 595 chp->data32ioh, 0, 596 (u_int32_t *)cmd, 597 sc_xfer->cmdlen >> 2); 598 } else { 599 bus_space_write_multi_stream_2(chp->cmd_iot, 600 chp->cmd_ioh, wd_data, 601 (u_int16_t *)cmd, 602 sc_xfer->cmdlen >> 1); 603 } 604 } 605 /* Start the DMA channel if necessary */ 606 if (xfer->c_flags & C_DMA) { 607 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 608 chp->channel, xfer->drive); 609 chp->ch_flags |= WDCF_DMA_WAIT; 610 } 611 612 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 613 chp->ch_flags |= WDCF_IRQ_WAIT; 614 } 615 return 1; 616 617 case PHASE_DATAOUT: 618 /* write data */ 619 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 620 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 621 (xfer->c_flags & C_DMA) != 0) { 622 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 623 if (xfer->c_flags & C_DMA) { 624 ata_dmaerr(drvp); 625 } 626 sc_xfer->error = XS_TIMEOUT; 627 wdc_atapi_reset(chp, xfer); 628 return 1; 629 } 630 if (xfer->c_bcount < len) { 631 printf("wdc_atapi_intr: warning: write only " 632 "%d of %d requested bytes\n", xfer->c_bcount, len); 633 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 634 bus_space_write_multi_2(chp->cmd_iot, 635 chp->cmd_ioh, wd_data, 636 (u_int16_t *)((char *)xfer->databuf + 637 xfer->c_skip), 638 xfer->c_bcount >> 1); 639 } else { 640 bus_space_write_multi_stream_2(chp->cmd_iot, 641 chp->cmd_ioh, wd_data, 642 (u_int16_t *)((char *)xfer->databuf + 643 xfer->c_skip), 644 xfer->c_bcount >> 1); 645 } 646 for (i = xfer->c_bcount; i < len; i += 2) 647 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 648 wd_data, 0); 649 xfer->c_skip += xfer->c_bcount; 650 xfer->c_bcount = 0; 651 } else { 652 if (drvp->drive_flags & DRIVE_CAP32) { 653 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 654 bus_space_write_multi_4(chp->data32iot, 655 chp->data32ioh, 0, 656 (u_int32_t *)((char *)xfer->databuf + 657 xfer->c_skip), 658 len >> 2); 659 else 660 bus_space_write_multi_stream_4(chp->data32iot, 661 chp->data32ioh, wd_data, 662 (u_int32_t *)((char *)xfer->databuf + 663 xfer->c_skip), 664 len >> 2); 665 666 xfer->c_skip += len & 0xfffffffc; 667 xfer->c_bcount -= len & 0xfffffffc; 668 len = len & 0x03; 669 } 670 if (len > 0) { 671 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 672 bus_space_write_multi_2(chp->cmd_iot, 673 chp->cmd_ioh, wd_data, 674 (u_int16_t *)((char *)xfer->databuf + 675 xfer->c_skip), 676 len >> 1); 677 else 678 bus_space_write_multi_stream_2(chp->cmd_iot, 679 chp->cmd_ioh, wd_data, 680 (u_int16_t *)((char *)xfer->databuf + 681 xfer->c_skip), 682 len >> 1); 683 xfer->c_skip += len; 684 xfer->c_bcount -= len; 685 } 686 } 687 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 688 chp->ch_flags |= WDCF_IRQ_WAIT; 689 } 690 return 1; 691 692 case PHASE_DATAIN: 693 /* Read data */ 694 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 695 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 696 (xfer->c_flags & C_DMA) != 0) { 697 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 698 if (xfer->c_flags & C_DMA) { 699 ata_dmaerr(drvp); 700 } 701 sc_xfer->error = XS_TIMEOUT; 702 wdc_atapi_reset(chp, xfer); 703 return 1; 704 } 705 if (xfer->c_bcount < len) { 706 printf("wdc_atapi_intr: warning: reading only " 707 "%d of %d bytes\n", xfer->c_bcount, len); 708 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 709 bus_space_read_multi_2(chp->cmd_iot, 710 chp->cmd_ioh, wd_data, 711 (u_int16_t *)((char *)xfer->databuf + 712 xfer->c_skip), 713 xfer->c_bcount >> 1); 714 } else { 715 bus_space_read_multi_stream_2(chp->cmd_iot, 716 chp->cmd_ioh, wd_data, 717 (u_int16_t *)((char *)xfer->databuf + 718 xfer->c_skip), 719 xfer->c_bcount >> 1); 720 } 721 wdcbit_bucket(chp, len - xfer->c_bcount); 722 xfer->c_skip += xfer->c_bcount; 723 xfer->c_bcount = 0; 724 } else { 725 if (drvp->drive_flags & DRIVE_CAP32) { 726 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 727 bus_space_read_multi_4(chp->data32iot, 728 chp->data32ioh, 0, 729 (u_int32_t *)((char *)xfer->databuf + 730 xfer->c_skip), 731 len >> 2); 732 else 733 bus_space_read_multi_stream_4(chp->data32iot, 734 chp->data32ioh, wd_data, 735 (u_int32_t *)((char *)xfer->databuf + 736 xfer->c_skip), 737 len >> 2); 738 739 xfer->c_skip += len & 0xfffffffc; 740 xfer->c_bcount -= len & 0xfffffffc; 741 len = len & 0x03; 742 } 743 if (len > 0) { 744 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 745 bus_space_read_multi_2(chp->cmd_iot, 746 chp->cmd_ioh, wd_data, 747 (u_int16_t *)((char *)xfer->databuf + 748 xfer->c_skip), 749 len >> 1); 750 else 751 bus_space_read_multi_stream_2(chp->cmd_iot, 752 chp->cmd_ioh, wd_data, 753 (u_int16_t *)((char *)xfer->databuf + 754 xfer->c_skip), 755 len >> 1); 756 xfer->c_skip += len; 757 xfer->c_bcount -=len; 758 } 759 } 760 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 761 chp->ch_flags |= WDCF_IRQ_WAIT; 762 } 763 return 1; 764 765 case PHASE_ABORTED: 766 case PHASE_COMPLETED: 767 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 768 if (xfer->c_flags & C_DMA) { 769 xfer->c_bcount -= sc_xfer->datalen; 770 } 771 sc_xfer->resid = xfer->c_bcount; 772 wdc_atapi_phase_complete(xfer); 773 return(1); 774 775 default: 776 if (++retries<500) { 777 DELAY(100); 778 chp->ch_status = bus_space_read_1(chp->cmd_iot, 779 chp->cmd_ioh, wd_status); 780 chp->ch_error = bus_space_read_1(chp->cmd_iot, 781 chp->cmd_ioh, wd_error); 782 goto again; 783 } 784 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 785 if (chp->ch_status & WDCS_ERR) { 786 sc_xfer->error = XS_SHORTSENSE; 787 sc_xfer->sense.atapi_sense = chp->ch_error; 788 } else { 789 if (xfer->c_flags & C_DMA) { 790 ata_dmaerr(drvp); 791 } 792 sc_xfer->error = XS_RESET; 793 wdc_atapi_reset(chp, xfer); 794 return (1); 795 } 796 } 797 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 798 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 799 DEBUG_INTR); 800 wdc_atapi_done(chp, xfer); 801 return (1); 802 } 803 804 int 805 wdc_atapi_ctrl(chp, xfer, irq) 806 struct channel_softc *chp; 807 struct wdc_xfer *xfer; 808 int irq; 809 { 810 struct scsipi_xfer *sc_xfer = xfer->cmd; 811 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 812 char *errstring = NULL; 813 int delay = (irq == 0) ? ATAPI_DELAY : 0; 814 815 /* Ack interrupt done in wait_for_unbusy */ 816 again: 817 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 818 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 819 DEBUG_INTR | DEBUG_FUNCS); 820 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 821 WDSD_IBM | (xfer->drive << 4)); 822 switch (drvp->state) { 823 case PIOMODE: 824 /* Don't try to set mode if controller can't be adjusted */ 825 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 826 goto ready; 827 /* Also don't try if the drive didn't report its mode */ 828 if ((drvp->drive_flags & DRIVE_MODE) == 0) 829 goto ready; 830 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 831 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 832 drvp->state = PIOMODE_WAIT; 833 break; 834 case PIOMODE_WAIT: 835 errstring = "piomode"; 836 if (wait_for_unbusy(chp, delay)) 837 goto timeout; 838 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 839 chp->wdc->irqack(chp); 840 if (chp->ch_status & WDCS_ERR) { 841 if (chp->ch_error == WDCE_ABRT) { 842 /* 843 * some ATAPI drives rejects pio settings. 844 * all we can do here is fall back to PIO 0 845 */ 846 drvp->drive_flags &= ~DRIVE_MODE; 847 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 848 drvp->PIO_mode = 0; 849 drvp->DMA_mode = 0; 850 printf("%s:%d:%d: pio setting rejected, " 851 "falling back to PIO mode 0\n", 852 chp->wdc->sc_dev.dv_xname, 853 chp->channel, xfer->drive); 854 chp->wdc->set_modes(chp); 855 goto ready; 856 } 857 goto error; 858 } 859 /* fall through */ 860 861 case DMAMODE: 862 if (drvp->drive_flags & DRIVE_UDMA) { 863 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 864 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 865 } else if (drvp->drive_flags & DRIVE_DMA) { 866 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 867 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 868 } else { 869 goto ready; 870 } 871 drvp->state = DMAMODE_WAIT; 872 break; 873 case DMAMODE_WAIT: 874 errstring = "dmamode"; 875 if (wait_for_unbusy(chp, delay)) 876 goto timeout; 877 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 878 chp->wdc->irqack(chp); 879 if (chp->ch_status & WDCS_ERR) 880 goto error; 881 /* fall through */ 882 883 case READY: 884 ready: 885 drvp->state = READY; 886 xfer->c_intr = wdc_atapi_intr; 887 callout_stop(&chp->ch_callout); 888 wdc_atapi_start(chp, xfer); 889 return 1; 890 } 891 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 892 chp->ch_flags |= WDCF_IRQ_WAIT; 893 xfer->c_intr = wdc_atapi_ctrl; 894 } else { 895 goto again; 896 } 897 return 1; 898 899 timeout: 900 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 901 return 0; /* IRQ was not for us */ 902 } 903 printf("%s:%d:%d: %s timed out\n", 904 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 905 sc_xfer->error = XS_TIMEOUT; 906 wdc_atapi_reset(chp, xfer); 907 return 1; 908 error: 909 printf("%s:%d:%d: %s ", 910 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 911 errstring); 912 printf("error (0x%x)\n", chp->ch_error); 913 sc_xfer->error = XS_SHORTSENSE; 914 sc_xfer->sense.atapi_sense = chp->ch_error; 915 wdc_atapi_reset(chp, xfer); 916 return 1; 917 } 918 919 void 920 wdc_atapi_phase_complete(xfer) 921 struct wdc_xfer *xfer; 922 { 923 struct channel_softc *chp = xfer->chp; 924 struct scsipi_xfer *sc_xfer = xfer->cmd; 925 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 926 927 /* wait for DSC if needed */ 928 if (drvp->drive_flags & DRIVE_ATAPIST) { 929 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 930 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 931 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 932 if (cold) { 933 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 934 sc_xfer->timeout)) { 935 printf("%s:%d:%d: wait_for_dsc failed\n", 936 chp->wdc->sc_dev.dv_xname, chp->channel, 937 xfer->drive); 938 sc_xfer->error = XS_TIMEOUT; 939 wdc_atapi_reset(chp, xfer); 940 return; 941 } 942 } else { 943 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 944 /* 10ms not enouth, try again in 1 tick */ 945 if (xfer->c_dscpoll++ > 946 mstohz(sc_xfer->timeout)) { 947 printf("%s:%d:%d: wait_for_dsc " 948 "failed\n", 949 chp->wdc->sc_dev.dv_xname, 950 chp->channel, xfer->drive); 951 sc_xfer->error = XS_TIMEOUT; 952 wdc_atapi_reset(chp, xfer); 953 return; 954 } 955 callout_reset(&chp->ch_callout, 1, 956 wdc_atapi_polldsc, xfer); 957 return; 958 } 959 } 960 } 961 962 /* 963 * Some drive occasionally set WDCS_ERR with 964 * "ATA illegal length indication" in the error 965 * register. If we read some data the sense is valid 966 * anyway, so don't report the error. 967 */ 968 if (chp->ch_status & WDCS_ERR && 969 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 970 sc_xfer->resid == sc_xfer->datalen)) { 971 /* save the short sense */ 972 sc_xfer->error = XS_SHORTSENSE; 973 sc_xfer->sense.atapi_sense = chp->ch_error; 974 if ((sc_xfer->xs_periph->periph_quirks & 975 PQUIRK_NOSENSE) == 0) { 976 /* ask scsipi to send a REQUEST_SENSE */ 977 sc_xfer->error = XS_BUSY; 978 sc_xfer->status = SCSI_CHECK; 979 } else if (chp->wdc->dma_status & 980 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 981 ata_dmaerr(drvp); 982 sc_xfer->error = XS_RESET; 983 wdc_atapi_reset(chp, xfer); 984 return; 985 } 986 } 987 if (xfer->c_bcount != 0) { 988 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 989 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 990 } 991 #ifdef DIAGNOSTIC 992 if (xfer->c_bcount < 0) { 993 printf("wdc_atapi_intr warning: bcount value " 994 "is %d after io\n", xfer->c_bcount); 995 } 996 #endif 997 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 998 "error 0x%x sense 0x%x\n", sc_xfer->error, 999 sc_xfer->sense.atapi_sense), DEBUG_INTR); 1000 wdc_atapi_done(chp, xfer); 1001 } 1002 1003 void 1004 wdc_atapi_done(chp, xfer) 1005 struct channel_softc *chp; 1006 struct wdc_xfer *xfer; 1007 { 1008 struct scsipi_xfer *sc_xfer = xfer->cmd; 1009 1010 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 1011 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 1012 (u_int)xfer->c_flags), DEBUG_XFERS); 1013 callout_stop(&chp->ch_callout); 1014 /* remove this command from xfer queue */ 1015 wdc_free_xfer(chp, xfer); 1016 1017 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 1018 scsipi_done(sc_xfer); 1019 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 1020 chp->ch_flags), DEBUG_XFERS); 1021 wdcstart(chp); 1022 } 1023 1024 void 1025 wdc_atapi_reset(chp, xfer) 1026 struct channel_softc *chp; 1027 struct wdc_xfer *xfer; 1028 { 1029 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1030 struct scsipi_xfer *sc_xfer = xfer->cmd; 1031 1032 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1033 drvp->state = 0; 1034 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1035 printf("%s:%d:%d: reset failed\n", 1036 chp->wdc->sc_dev.dv_xname, chp->channel, 1037 xfer->drive); 1038 sc_xfer->error = XS_SELTIMEOUT; 1039 } 1040 wdc_atapi_done(chp, xfer); 1041 return; 1042 } 1043 1044 void 1045 wdc_atapi_polldsc(arg) 1046 void *arg; 1047 { 1048 wdc_atapi_phase_complete(arg); 1049 } 1050