atapi_wdc.c revision 1.58
1 /* $NetBSD: atapi_wdc.c,v 1.58 2003/10/05 17:48:49 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. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.58 2003/10/05 17:48:49 bouyer Exp $"); 35 36 #ifndef WDCDEBUG 37 #define WDCDEBUG 38 #endif /* WDCDEBUG */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/file.h> 44 #include <sys/stat.h> 45 #include <sys/buf.h> 46 #include <sys/malloc.h> 47 #include <sys/device.h> 48 #include <sys/syslog.h> 49 #include <sys/proc.h> 50 #include <sys/dvdio.h> 51 52 #include <machine/intr.h> 53 #include <machine/bus.h> 54 55 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 56 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 57 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 58 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 59 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 60 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 61 62 #include <dev/ata/atareg.h> 63 #include <dev/ata/atavar.h> 64 #include <dev/ic/wdcreg.h> 65 #include <dev/ic/wdcvar.h> 66 67 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 68 69 #define DEBUG_INTR 0x01 70 #define DEBUG_XFERS 0x02 71 #define DEBUG_STATUS 0x04 72 #define DEBUG_FUNCS 0x08 73 #define DEBUG_PROBE 0x10 74 #ifdef WDCDEBUG 75 int wdcdebug_atapi_mask = 0; 76 #define WDCDEBUG_PRINT(args, level) \ 77 if (wdcdebug_atapi_mask & (level)) \ 78 printf args 79 #else 80 #define WDCDEBUG_PRINT(args, level) 81 #endif 82 83 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 84 int wdc_atapi_get_params __P((struct scsipi_channel *, int, 85 struct ataparams *)); 86 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 87 void wdc_atapi_minphys __P((struct buf *bp)); 88 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 89 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 90 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 91 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 92 void wdc_atapi_phase_complete __P((struct wdc_xfer *)); 93 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 94 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 95 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 96 scsipi_adapter_req_t, void *)); 97 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 98 void wdc_atapi_polldsc __P((void *arg)); 99 100 #define MAX_SIZE MAXPHYS 101 102 const struct scsipi_bustype wdc_atapi_bustype = { 103 SCSIPI_BUSTYPE_ATAPI, 104 atapi_scsipi_cmd, 105 atapi_interpret_sense, 106 atapi_print_addr, 107 wdc_atapi_kill_pending, 108 }; 109 110 void 111 wdc_atapibus_attach(chp) 112 struct channel_softc *chp; 113 { 114 struct wdc_softc *wdc = chp->wdc; 115 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 116 struct scsipi_channel *chan = &chp->ch_atapi_channel; 117 118 /* 119 * Fill in the scsipi_adapter. 120 */ 121 adapt->adapt_dev = &wdc->sc_dev; 122 adapt->adapt_nchannels = wdc->nchannels; 123 adapt->adapt_request = wdc_atapi_scsipi_request; 124 adapt->adapt_minphys = wdc_atapi_minphys; 125 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 126 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 127 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 128 129 /* 130 * Fill in the scsipi_channel. 131 */ 132 memset(chan, 0, sizeof(*chan)); 133 chan->chan_adapter = adapt; 134 chan->chan_bustype = &wdc_atapi_bustype; 135 chan->chan_channel = chp->channel; 136 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 137 chan->chan_openings = 1; 138 chan->chan_max_periph = 1; 139 chan->chan_ntargets = 2; 140 chan->chan_nluns = 1; 141 142 chp->atapibus = config_found(&wdc->sc_dev, chan, atapiprint); 143 } 144 145 void 146 wdc_atapi_minphys(bp) 147 struct buf *bp; 148 { 149 150 if (bp->b_bcount > MAX_SIZE) 151 bp->b_bcount = MAX_SIZE; 152 minphys(bp); 153 } 154 155 /* 156 * Kill off all pending xfers for a periph. 157 * 158 * Must be called at splbio(). 159 */ 160 void 161 wdc_atapi_kill_pending(periph) 162 struct scsipi_periph *periph; 163 { 164 struct wdc_softc *wdc = 165 (void *)periph->periph_channel->chan_adapter->adapt_dev; 166 struct channel_softc *chp = 167 wdc->channels[periph->periph_channel->chan_channel]; 168 169 wdc_kill_pending(chp); 170 } 171 172 void 173 wdc_atapi_kill_xfer(chp, xfer) 174 struct channel_softc *chp; 175 struct wdc_xfer *xfer; 176 { 177 struct scsipi_xfer *sc_xfer = xfer->cmd; 178 179 callout_stop(&chp->ch_callout); 180 /* remove this command from xfer queue */ 181 wdc_free_xfer(chp, xfer); 182 sc_xfer->error = XS_DRIVER_STUFFUP; 183 scsipi_done(sc_xfer); 184 } 185 186 int 187 wdc_atapi_get_params(chan, drive, id) 188 struct scsipi_channel *chan; 189 int drive; 190 struct ataparams *id; 191 { 192 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 193 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 194 struct wdc_command wdc_c; 195 196 /* if no ATAPI device detected at wdc attach time, skip */ 197 /* 198 * XXX this will break scsireprobe if this is of any interest for 199 * ATAPI devices one day. 200 */ 201 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 202 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 203 drive), DEBUG_PROBE); 204 return -1; 205 } 206 wdccommandshort(chp, drive, ATAPI_SOFT_RESET); 207 chp->ch_drive[drive].state = 0; 208 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 209 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 210 "failed for drive %s:%d:%d\n", 211 chp->wdc->sc_dev.dv_xname, chp->channel, drive), 212 DEBUG_PROBE); 213 return -1; 214 } 215 216 /* Some ATAPI devices need a bit more time after software reset. */ 217 delay(5000); 218 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 219 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 220 "failed for drive %s:%d:%d: error 0x%x\n", 221 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 222 wdc_c.r_error), DEBUG_PROBE); 223 return -1; 224 } 225 return 0; 226 } 227 228 void 229 wdc_atapi_probe_device(sc, target) 230 struct atapibus_softc *sc; 231 int target; 232 { 233 struct scsipi_channel *chan = sc->sc_channel; 234 struct scsipi_periph *periph; 235 struct ataparams ids; 236 struct ataparams *id = &ids; 237 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 238 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 239 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 240 struct scsipibus_attach_args sa; 241 char serial_number[21], model[41], firmware_revision[9]; 242 243 /* skip if already attached */ 244 if (scsipi_lookup_periph(chan, target, 0) != NULL) 245 return; 246 247 if (wdc_atapi_get_params(chan, target, id) == 0) { 248 #ifdef ATAPI_DEBUG_PROBE 249 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 250 sc->sc_dev.dv_xname, target, 251 id->atap_config & ATAPI_CFG_CMD_MASK, 252 id->atap_config & ATAPI_CFG_DRQ_MASK); 253 #endif 254 periph = scsipi_alloc_periph(M_NOWAIT); 255 if (periph == NULL) { 256 printf("%s: unable to allocate periph for drive %d\n", 257 sc->sc_dev.dv_xname, target); 258 return; 259 } 260 periph->periph_dev = NULL; 261 periph->periph_channel = chan; 262 periph->periph_switch = &atapi_probe_periphsw; 263 periph->periph_target = target; 264 periph->periph_lun = 0; 265 periph->periph_quirks = PQUIRK_ONLYBIG; 266 267 #ifdef SCSIPI_DEBUG 268 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 269 SCSIPI_DEBUG_TARGET == target) 270 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 271 #endif 272 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 273 if (id->atap_config & ATAPI_CFG_REMOV) 274 periph->periph_flags |= PERIPH_REMOVABLE; 275 if (periph->periph_type == T_SEQUENTIAL) 276 drvp->drive_flags |= DRIVE_ATAPIST; 277 278 sa.sa_periph = periph; 279 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 280 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 281 T_REMOV : T_FIXED; 282 scsipi_strvis(model, 40, id->atap_model, 40); 283 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 284 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 285 sa.sa_inqbuf.vendor = model; 286 sa.sa_inqbuf.product = serial_number; 287 sa.sa_inqbuf.revision = firmware_revision; 288 289 /* 290 * Determine the operating mode capabilities of the device. 291 */ 292 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 293 periph->periph_cap |= PERIPH_CAP_CMD16; 294 /* XXX This is gross. */ 295 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 296 297 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 298 299 if (drvp->drv_softc) 300 wdc_probe_caps(drvp); 301 } 302 } 303 304 void 305 wdc_atapi_scsipi_request(chan, req, arg) 306 struct scsipi_channel *chan; 307 scsipi_adapter_req_t req; 308 void *arg; 309 { 310 struct scsipi_adapter *adapt = chan->chan_adapter; 311 struct scsipi_periph *periph; 312 struct scsipi_xfer *sc_xfer; 313 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 314 struct wdc_xfer *xfer; 315 int channel = chan->chan_channel; 316 int drive, s; 317 318 switch (req) { 319 case ADAPTER_REQ_RUN_XFER: 320 sc_xfer = arg; 321 periph = sc_xfer->xs_periph; 322 drive = periph->periph_target; 323 324 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 325 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 326 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 327 sc_xfer->error = XS_DRIVER_STUFFUP; 328 scsipi_done(sc_xfer); 329 return; 330 } 331 332 xfer = wdc_get_xfer(WDC_NOSLEEP); 333 if (xfer == NULL) { 334 sc_xfer->error = XS_RESOURCE_SHORTAGE; 335 scsipi_done(sc_xfer); 336 return; 337 } 338 339 if (sc_xfer->xs_control & XS_CTL_POLL) 340 xfer->c_flags |= C_POLL; 341 xfer->drive = drive; 342 xfer->c_flags |= C_ATAPI; 343 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 344 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 345 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 346 /* 347 * DVD authentication commands must always be done in 348 * PIO mode. 349 */ 350 xfer->c_flags |= C_FORCEPIO; 351 } 352 /* 353 * DMA can't deal with transfers which are not a multiple of 354 * 2 bytes. It's a bug to request such transfers for ATAPI 355 * but as the request can come from userland, we have to 356 * protect against it. 357 * Also some devices seems to not handle DMA xfers of less than 358 * 4 bytes. 359 */ 360 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 361 xfer->c_flags |= C_FORCEPIO; 362 363 xfer->cmd = sc_xfer; 364 xfer->databuf = sc_xfer->data; 365 xfer->c_bcount = sc_xfer->datalen; 366 xfer->c_start = wdc_atapi_start; 367 xfer->c_intr = wdc_atapi_intr; 368 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 369 xfer->c_dscpoll = 0; 370 s = splbio(); 371 wdc_exec_xfer(wdc->channels[channel], xfer); 372 #ifdef DIAGNOSTIC 373 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 374 (sc_xfer->xs_status & XS_STS_DONE) == 0) 375 panic("wdc_atapi_scsipi_request: polled command " 376 "not done"); 377 #endif 378 splx(s); 379 return; 380 381 default: 382 /* Not supported, nothing to do. */ 383 ; 384 } 385 } 386 387 void 388 wdc_atapi_start(chp, xfer) 389 struct channel_softc *chp; 390 struct wdc_xfer *xfer; 391 { 392 struct scsipi_xfer *sc_xfer = xfer->cmd; 393 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 394 395 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 396 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 397 sc_xfer->xs_control), DEBUG_XFERS); 398 /* Adjust C_DMA, it may have changed if we are requesting sense */ 399 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 400 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 401 if (drvp->n_xfers <= NXFER) 402 drvp->n_xfers++; 403 xfer->c_flags |= C_DMA; 404 } else { 405 xfer->c_flags &= ~C_DMA; 406 } 407 /* start timeout machinery */ 408 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 409 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 410 wdctimeout, chp); 411 /* Do control operations specially. */ 412 if (drvp->state < READY) { 413 if (drvp->state != RESET) { 414 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 415 chp->wdc->sc_dev.dv_xname, chp->channel, 416 xfer->drive, drvp->state); 417 panic("wdc_atapi_start: bad state"); 418 } 419 drvp->state = PIOMODE; 420 wdc_atapi_ctrl(chp, xfer, 0); 421 return; 422 } 423 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 424 WDSD_IBM | (xfer->drive << 4)); 425 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 426 printf("wdc_atapi_start: not ready, st = %02x\n", 427 chp->ch_status); 428 sc_xfer->error = XS_TIMEOUT; 429 wdc_atapi_reset(chp, xfer); 430 return; 431 } 432 433 /* 434 * Even with WDCS_ERR, the device should accept a command packet 435 * Limit length to what can be stuffed into the cylinder register 436 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 437 * but not all devices do that and it's not obvious from the 438 * ATAPI spec that that behaviour should be expected. If more 439 * data is necessary, multiple data transfer phases will be done. 440 */ 441 442 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 443 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 444 0, 0, 0, 445 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 446 447 /* 448 * If there is no interrupt for CMD input, busy-wait for it (done in 449 * the interrupt routine. If it is a polled command, call the interrupt 450 * routine until command is done. 451 */ 452 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 453 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 454 /* Wait for at last 400ns for status bit to be valid */ 455 DELAY(1); 456 if (chp->ch_flags & WDCF_DMA_WAIT) { 457 wdc_dmawait(chp, xfer, sc_xfer->timeout); 458 chp->ch_flags &= ~WDCF_DMA_WAIT; 459 } 460 wdc_atapi_intr(chp, xfer, 0); 461 } else { 462 chp->ch_flags |= WDCF_IRQ_WAIT; 463 } 464 if (sc_xfer->xs_control & XS_CTL_POLL) { 465 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 466 /* Wait for at last 400ns for status bit to be valid */ 467 DELAY(1); 468 wdc_atapi_intr(chp, xfer, 0); 469 } 470 } 471 } 472 473 int 474 wdc_atapi_intr(chp, xfer, irq) 475 struct channel_softc *chp; 476 struct wdc_xfer *xfer; 477 int irq; 478 { 479 struct scsipi_xfer *sc_xfer = xfer->cmd; 480 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 481 int len, phase, i, retries=0; 482 int ire; 483 int dma_flags = 0; 484 void *cmd; 485 486 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 487 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 488 489 /* Is it not a transfer, but a control operation? */ 490 if (drvp->state < READY) { 491 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 492 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 493 drvp->state); 494 panic("wdc_atapi_intr: bad state"); 495 } 496 /* 497 * If we missed an interrupt in a PIO transfer, reset and restart. 498 * Don't try to continue transfer, we may have missed cycles. 499 */ 500 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 501 sc_xfer->error = XS_TIMEOUT; 502 wdc_atapi_reset(chp, xfer); 503 return 1; 504 } 505 506 /* Ack interrupt done in wait_for_unbusy */ 507 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 508 WDSD_IBM | (xfer->drive << 4)); 509 if (wait_for_unbusy(chp, 510 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 511 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 512 return 0; /* IRQ was not for us */ 513 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 514 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 515 xfer->c_bcount, xfer->c_skip); 516 if (xfer->c_flags & C_DMA) { 517 ata_dmaerr(drvp); 518 } 519 sc_xfer->error = XS_TIMEOUT; 520 wdc_atapi_reset(chp, xfer); 521 return 1; 522 } 523 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 524 chp->wdc->irqack(chp); 525 526 /* 527 * If we missed an IRQ and were using DMA, flag it as a DMA error 528 * and reset device. 529 */ 530 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 531 ata_dmaerr(drvp); 532 sc_xfer->error = XS_RESET; 533 wdc_atapi_reset(chp, xfer); 534 return (1); 535 } 536 /* 537 * if the request sense command was aborted, report the short sense 538 * previously recorded, else continue normal processing 539 */ 540 541 if (xfer->c_flags & C_DMA) 542 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 543 ? WDC_DMA_READ : 0; 544 again: 545 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 546 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 547 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 548 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 549 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 550 "ire 0x%x :", xfer->c_bcount, 551 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 552 553 switch (phase) { 554 case PHASE_CMDOUT: 555 cmd = sc_xfer->cmd; 556 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 557 /* Init the DMA channel if necessary */ 558 if (xfer->c_flags & C_DMA) { 559 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 560 chp->channel, xfer->drive, 561 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 562 sc_xfer->error = XS_DRIVER_STUFFUP; 563 break; 564 } 565 } 566 /* send packet command */ 567 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 568 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 569 if (drvp->drive_flags & DRIVE_CAP32) 570 bus_space_write_multi_4(chp->data32iot, 571 chp->data32ioh, 0, (u_int32_t *)cmd, 572 sc_xfer->cmdlen >> 2); 573 else 574 bus_space_write_multi_2(chp->cmd_iot, 575 chp->cmd_ioh, wd_data, (u_int16_t *)cmd, 576 sc_xfer->cmdlen >> 1); 577 } else { 578 if (drvp->drive_flags & DRIVE_CAP32) 579 bus_space_write_multi_stream_4(chp->data32iot, 580 chp->data32ioh, 0, (u_int32_t *)cmd, 581 sc_xfer->cmdlen >> 2); 582 else 583 bus_space_write_multi_stream_2(chp->cmd_iot, 584 chp->cmd_ioh, wd_data, (u_int16_t *)cmd, 585 sc_xfer->cmdlen >> 1); 586 } 587 /* Start the DMA channel if necessary */ 588 if (xfer->c_flags & C_DMA) { 589 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 590 chp->channel, xfer->drive); 591 chp->ch_flags |= WDCF_DMA_WAIT; 592 } 593 594 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 595 chp->ch_flags |= WDCF_IRQ_WAIT; 596 } 597 return 1; 598 599 case PHASE_DATAOUT: 600 /* write data */ 601 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 602 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 603 (xfer->c_flags & C_DMA) != 0) { 604 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 605 if (xfer->c_flags & C_DMA) { 606 ata_dmaerr(drvp); 607 } 608 sc_xfer->error = XS_TIMEOUT; 609 wdc_atapi_reset(chp, xfer); 610 return 1; 611 } 612 if (xfer->c_bcount < len) { 613 printf("wdc_atapi_intr: warning: write only " 614 "%d of %d requested bytes\n", xfer->c_bcount, len); 615 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 616 bus_space_write_multi_2(chp->cmd_iot, 617 chp->cmd_ioh, wd_data, 618 (u_int16_t *)((char *)xfer->databuf + 619 xfer->c_skip), 620 xfer->c_bcount >> 1); 621 } else { 622 bus_space_write_multi_stream_2(chp->cmd_iot, 623 chp->cmd_ioh, wd_data, 624 (u_int16_t *)((char *)xfer->databuf + 625 xfer->c_skip), 626 xfer->c_bcount >> 1); 627 } 628 for (i = xfer->c_bcount; i < len; i += 2) 629 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 630 wd_data, 0); 631 xfer->c_skip += xfer->c_bcount; 632 xfer->c_bcount = 0; 633 } else { 634 if (drvp->drive_flags & DRIVE_CAP32) { 635 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 636 bus_space_write_multi_4(chp->data32iot, 637 chp->data32ioh, 0, 638 (u_int32_t *)((char *)xfer->databuf + 639 xfer->c_skip), 640 len >> 2); 641 else 642 bus_space_write_multi_stream_4(chp->data32iot, 643 chp->data32ioh, wd_data, 644 (u_int32_t *)((char *)xfer->databuf + 645 xfer->c_skip), 646 len >> 2); 647 648 xfer->c_skip += len & 0xfffffffc; 649 xfer->c_bcount -= len & 0xfffffffc; 650 len = len & 0x03; 651 } 652 if (len > 0) { 653 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 654 bus_space_write_multi_2(chp->cmd_iot, 655 chp->cmd_ioh, wd_data, 656 (u_int16_t *)((char *)xfer->databuf + 657 xfer->c_skip), 658 len >> 1); 659 else 660 bus_space_write_multi_stream_2(chp->cmd_iot, 661 chp->cmd_ioh, wd_data, 662 (u_int16_t *)((char *)xfer->databuf + 663 xfer->c_skip), 664 len >> 1); 665 xfer->c_skip += len; 666 xfer->c_bcount -= len; 667 } 668 } 669 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 670 chp->ch_flags |= WDCF_IRQ_WAIT; 671 } 672 return 1; 673 674 case PHASE_DATAIN: 675 /* Read data */ 676 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 677 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 678 (xfer->c_flags & C_DMA) != 0) { 679 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 680 if (xfer->c_flags & C_DMA) { 681 ata_dmaerr(drvp); 682 } 683 sc_xfer->error = XS_TIMEOUT; 684 wdc_atapi_reset(chp, xfer); 685 return 1; 686 } 687 if (xfer->c_bcount < len) { 688 printf("wdc_atapi_intr: warning: reading only " 689 "%d of %d bytes\n", xfer->c_bcount, len); 690 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 691 bus_space_read_multi_2(chp->cmd_iot, 692 chp->cmd_ioh, wd_data, 693 (u_int16_t *)((char *)xfer->databuf + 694 xfer->c_skip), 695 xfer->c_bcount >> 1); 696 } else { 697 bus_space_read_multi_stream_2(chp->cmd_iot, 698 chp->cmd_ioh, wd_data, 699 (u_int16_t *)((char *)xfer->databuf + 700 xfer->c_skip), 701 xfer->c_bcount >> 1); 702 } 703 wdcbit_bucket(chp, len - xfer->c_bcount); 704 xfer->c_skip += xfer->c_bcount; 705 xfer->c_bcount = 0; 706 } else { 707 if (drvp->drive_flags & DRIVE_CAP32) { 708 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 709 bus_space_read_multi_4(chp->data32iot, 710 chp->data32ioh, 0, 711 (u_int32_t *)((char *)xfer->databuf + 712 xfer->c_skip), 713 len >> 2); 714 else 715 bus_space_read_multi_stream_4(chp->data32iot, 716 chp->data32ioh, wd_data, 717 (u_int32_t *)((char *)xfer->databuf + 718 xfer->c_skip), 719 len >> 2); 720 721 xfer->c_skip += len & 0xfffffffc; 722 xfer->c_bcount -= len & 0xfffffffc; 723 len = len & 0x03; 724 } 725 if (len > 0) { 726 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 727 bus_space_read_multi_2(chp->cmd_iot, 728 chp->cmd_ioh, wd_data, 729 (u_int16_t *)((char *)xfer->databuf + 730 xfer->c_skip), 731 len >> 1); 732 else 733 bus_space_read_multi_stream_2(chp->cmd_iot, 734 chp->cmd_ioh, wd_data, 735 (u_int16_t *)((char *)xfer->databuf + 736 xfer->c_skip), 737 len >> 1); 738 xfer->c_skip += len; 739 xfer->c_bcount -=len; 740 } 741 } 742 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 743 chp->ch_flags |= WDCF_IRQ_WAIT; 744 } 745 return 1; 746 747 case PHASE_ABORTED: 748 case PHASE_COMPLETED: 749 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 750 if (xfer->c_flags & C_DMA) { 751 xfer->c_bcount -= sc_xfer->datalen; 752 } 753 sc_xfer->resid = xfer->c_bcount; 754 wdc_atapi_phase_complete(xfer); 755 return(1); 756 757 default: 758 if (++retries<500) { 759 DELAY(100); 760 chp->ch_status = bus_space_read_1(chp->cmd_iot, 761 chp->cmd_ioh, wd_status); 762 chp->ch_error = bus_space_read_1(chp->cmd_iot, 763 chp->cmd_ioh, wd_error); 764 goto again; 765 } 766 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 767 if (chp->ch_status & WDCS_ERR) { 768 sc_xfer->error = XS_SHORTSENSE; 769 sc_xfer->sense.atapi_sense = chp->ch_error; 770 } else { 771 if (xfer->c_flags & C_DMA) { 772 ata_dmaerr(drvp); 773 } 774 sc_xfer->error = XS_RESET; 775 wdc_atapi_reset(chp, xfer); 776 return (1); 777 } 778 } 779 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 780 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 781 DEBUG_INTR); 782 wdc_atapi_done(chp, xfer); 783 return (1); 784 } 785 786 int 787 wdc_atapi_ctrl(chp, xfer, irq) 788 struct channel_softc *chp; 789 struct wdc_xfer *xfer; 790 int irq; 791 { 792 struct scsipi_xfer *sc_xfer = xfer->cmd; 793 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 794 char *errstring = NULL; 795 int delay = (irq == 0) ? ATAPI_DELAY : 0; 796 797 /* Ack interrupt done in wait_for_unbusy */ 798 again: 799 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 800 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 801 DEBUG_INTR | DEBUG_FUNCS); 802 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 803 WDSD_IBM | (xfer->drive << 4)); 804 switch (drvp->state) { 805 case PIOMODE: 806 /* Don't try to set mode if controller can't be adjusted */ 807 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 808 goto ready; 809 /* Also don't try if the drive didn't report its mode */ 810 if ((drvp->drive_flags & DRIVE_MODE) == 0) 811 goto ready; 812 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 813 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 814 drvp->state = PIOMODE_WAIT; 815 break; 816 case PIOMODE_WAIT: 817 errstring = "piomode"; 818 if (wait_for_unbusy(chp, delay)) 819 goto timeout; 820 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 821 chp->wdc->irqack(chp); 822 if (chp->ch_status & WDCS_ERR) { 823 if (chp->ch_error == WDCE_ABRT) { 824 /* 825 * some ATAPI drives rejects pio settings. 826 * all we can do here is fall back to PIO 0 827 */ 828 drvp->drive_flags &= ~DRIVE_MODE; 829 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 830 drvp->PIO_mode = 0; 831 drvp->DMA_mode = 0; 832 printf("%s:%d:%d: pio setting rejected, " 833 "falling back to PIO mode 0\n", 834 chp->wdc->sc_dev.dv_xname, 835 chp->channel, xfer->drive); 836 chp->wdc->set_modes(chp); 837 goto ready; 838 } 839 goto error; 840 } 841 /* fall through */ 842 843 case DMAMODE: 844 if (drvp->drive_flags & DRIVE_UDMA) { 845 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 846 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 847 } else if (drvp->drive_flags & DRIVE_DMA) { 848 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 849 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 850 } else { 851 goto ready; 852 } 853 drvp->state = DMAMODE_WAIT; 854 break; 855 case DMAMODE_WAIT: 856 errstring = "dmamode"; 857 if (wait_for_unbusy(chp, delay)) 858 goto timeout; 859 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 860 chp->wdc->irqack(chp); 861 if (chp->ch_status & WDCS_ERR) 862 goto error; 863 /* fall through */ 864 865 case READY: 866 ready: 867 drvp->state = READY; 868 xfer->c_intr = wdc_atapi_intr; 869 callout_stop(&chp->ch_callout); 870 wdc_atapi_start(chp, xfer); 871 return 1; 872 } 873 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 874 chp->ch_flags |= WDCF_IRQ_WAIT; 875 xfer->c_intr = wdc_atapi_ctrl; 876 } else { 877 goto again; 878 } 879 return 1; 880 881 timeout: 882 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 883 return 0; /* IRQ was not for us */ 884 } 885 printf("%s:%d:%d: %s timed out\n", 886 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 887 sc_xfer->error = XS_TIMEOUT; 888 wdc_atapi_reset(chp, xfer); 889 return 1; 890 error: 891 printf("%s:%d:%d: %s ", 892 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 893 errstring); 894 printf("error (0x%x)\n", chp->ch_error); 895 sc_xfer->error = XS_SHORTSENSE; 896 sc_xfer->sense.atapi_sense = chp->ch_error; 897 wdc_atapi_reset(chp, xfer); 898 return 1; 899 } 900 901 void 902 wdc_atapi_phase_complete(xfer) 903 struct wdc_xfer *xfer; 904 { 905 struct channel_softc *chp = xfer->chp; 906 struct scsipi_xfer *sc_xfer = xfer->cmd; 907 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 908 909 /* wait for DSC if needed */ 910 if (drvp->drive_flags & DRIVE_ATAPIST) { 911 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 912 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 913 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 914 #if 1 915 if (cold) 916 panic("wdc_atapi_phase_complete: cold"); 917 #endif 918 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 919 /* 10ms not enough, try again in 1 tick */ 920 if (xfer->c_dscpoll++ > 921 mstohz(sc_xfer->timeout)) { 922 printf("%s:%d:%d: wait_for_dsc failed\n", 923 chp->wdc->sc_dev.dv_xname, chp->channel, 924 xfer->drive); 925 sc_xfer->error = XS_TIMEOUT; 926 wdc_atapi_reset(chp, xfer); 927 } else 928 callout_reset(&chp->ch_callout, 1, 929 wdc_atapi_polldsc, xfer); 930 return; 931 } 932 } 933 934 /* 935 * Some drive occasionally set WDCS_ERR with 936 * "ATA illegal length indication" in the error 937 * register. If we read some data the sense is valid 938 * anyway, so don't report the error. 939 */ 940 if (chp->ch_status & WDCS_ERR && 941 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 942 sc_xfer->resid == sc_xfer->datalen)) { 943 /* save the short sense */ 944 sc_xfer->error = XS_SHORTSENSE; 945 sc_xfer->sense.atapi_sense = chp->ch_error; 946 if ((sc_xfer->xs_periph->periph_quirks & 947 PQUIRK_NOSENSE) == 0) { 948 /* ask scsipi to send a REQUEST_SENSE */ 949 sc_xfer->error = XS_BUSY; 950 sc_xfer->status = SCSI_CHECK; 951 } else if (chp->wdc->dma_status & 952 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 953 ata_dmaerr(drvp); 954 sc_xfer->error = XS_RESET; 955 wdc_atapi_reset(chp, xfer); 956 return; 957 } 958 } 959 if (xfer->c_bcount != 0) { 960 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 961 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 962 } 963 #ifdef DIAGNOSTIC 964 if (xfer->c_bcount < 0) { 965 printf("wdc_atapi_intr warning: bcount value " 966 "is %d after io\n", xfer->c_bcount); 967 } 968 #endif 969 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 970 "error 0x%x sense 0x%x\n", sc_xfer->error, 971 sc_xfer->sense.atapi_sense), DEBUG_INTR); 972 wdc_atapi_done(chp, xfer); 973 } 974 975 void 976 wdc_atapi_done(chp, xfer) 977 struct channel_softc *chp; 978 struct wdc_xfer *xfer; 979 { 980 struct scsipi_xfer *sc_xfer = xfer->cmd; 981 982 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 983 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 984 (u_int)xfer->c_flags), DEBUG_XFERS); 985 callout_stop(&chp->ch_callout); 986 /* remove this command from xfer queue */ 987 wdc_free_xfer(chp, xfer); 988 989 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 990 scsipi_done(sc_xfer); 991 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 992 chp->ch_flags), DEBUG_XFERS); 993 wdcstart(chp); 994 } 995 996 void 997 wdc_atapi_reset(chp, xfer) 998 struct channel_softc *chp; 999 struct wdc_xfer *xfer; 1000 { 1001 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1002 struct scsipi_xfer *sc_xfer = xfer->cmd; 1003 1004 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1005 drvp->state = 0; 1006 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1007 printf("%s:%d:%d: reset failed\n", 1008 chp->wdc->sc_dev.dv_xname, chp->channel, 1009 xfer->drive); 1010 sc_xfer->error = XS_SELTIMEOUT; 1011 } 1012 wdc_atapi_done(chp, xfer); 1013 return; 1014 } 1015 1016 void 1017 wdc_atapi_polldsc(arg) 1018 void *arg; 1019 { 1020 wdc_atapi_phase_complete(arg); 1021 } 1022
Indexes created Mon Sep 22 13:09:51 GMT 2025