1 /* $NetBSD: atapi_wdc.c,v 1.41 2001/05/15 13:53:20 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1998 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #ifndef WDCDEBUG 36 #define WDCDEBUG 37 #endif /* WDCDEBUG */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/file.h> 43 #include <sys/stat.h> 44 #include <sys/buf.h> 45 #include <sys/malloc.h> 46 #include <sys/device.h> 47 #include <sys/syslog.h> 48 #include <sys/proc.h> 49 #include <sys/dvdio.h> 50 51 #include <machine/intr.h> 52 #include <machine/bus.h> 53 54 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 55 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 56 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 57 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 58 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 59 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 60 61 #include <dev/ata/atareg.h> 62 #include <dev/ata/atavar.h> 63 #include <dev/ic/wdcreg.h> 64 #include <dev/ic/wdcvar.h> 65 66 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 67 68 #define DEBUG_INTR 0x01 69 #define DEBUG_XFERS 0x02 70 #define DEBUG_STATUS 0x04 71 #define DEBUG_FUNCS 0x08 72 #define DEBUG_PROBE 0x10 73 #ifdef WDCDEBUG 74 int wdcdebug_atapi_mask = 0; 75 #define WDCDEBUG_PRINT(args, level) \ 76 if (wdcdebug_atapi_mask & (level)) \ 77 printf args 78 #else 79 #define WDCDEBUG_PRINT(args, level) 80 #endif 81 82 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 83 int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, 84 struct ataparams *)); 85 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 86 void wdc_atapi_minphys __P((struct buf *bp)); 87 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 88 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 89 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 90 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 91 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 92 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 93 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 94 scsipi_adapter_req_t, void *)); 95 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 96 97 #define MAX_SIZE MAXPHYS 98 99 const struct scsipi_bustype wdc_atapi_bustype = { 100 SCSIPI_BUSTYPE_ATAPI, 101 atapi_scsipi_cmd, 102 atapi_interpret_sense, 103 atapi_print_addr, 104 wdc_atapi_kill_pending, 105 }; 106 107 void 108 wdc_atapibus_attach(chp) 109 struct channel_softc *chp; 110 { 111 struct wdc_softc *wdc = chp->wdc; 112 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 113 struct scsipi_channel *chan = &chp->ch_atapi_channel; 114 struct ata_atapi_attach aa; 115 116 /* 117 * Fill in the scsipi_adapter. 118 */ 119 memset(adapt, 0, sizeof(*adapt)); 120 adapt->adapt_dev = &wdc->sc_dev; 121 adapt->adapt_nchannels = wdc->nchannels; 122 adapt->adapt_request = wdc_atapi_scsipi_request; 123 adapt->adapt_minphys = wdc_atapi_minphys; 124 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 125 126 /* 127 * Fill in the scsipi_channel. 128 */ 129 memset(chan, 0, sizeof(*chan)); 130 chan->chan_adapter = adapt; 131 chan->chan_bustype = &wdc_atapi_bustype; 132 chan->chan_channel = chp->channel; 133 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 134 chan->chan_openings = 1; 135 chan->chan_max_periph = 1; 136 chan->chan_ntargets = 2; 137 chan->chan_nluns = 1; 138 139 memset(&aa, 0, sizeof(aa)); 140 aa.aa_type = T_ATAPI; 141 aa.aa_channel = chan->chan_channel; 142 aa.aa_openings = chan->chan_openings; 143 aa.aa_drv_data = chp->ch_drive; /* pass the whole array */ 144 aa.aa_bus_private = chan; 145 chp->atapibus = config_found(&wdc->sc_dev, &aa, atapiprint); 146 } 147 148 void 149 wdc_atapi_minphys(bp) 150 struct buf *bp; 151 { 152 153 if (bp->b_bcount > MAX_SIZE) 154 bp->b_bcount = MAX_SIZE; 155 minphys(bp); 156 } 157 158 /* 159 * Kill off all pending xfers for a periph. 160 * 161 * Must be called at splbio(). 162 */ 163 void 164 wdc_atapi_kill_pending(periph) 165 struct scsipi_periph *periph; 166 { 167 struct wdc_softc *wdc = 168 (void *)periph->periph_channel->chan_adapter->adapt_dev; 169 struct channel_softc *chp = 170 wdc->channels[periph->periph_channel->chan_channel]; 171 172 wdc_kill_pending(chp); 173 } 174 175 void 176 wdc_atapi_kill_xfer(chp, xfer) 177 struct channel_softc *chp; 178 struct wdc_xfer *xfer; 179 { 180 struct scsipi_xfer *sc_xfer = xfer->cmd; 181 182 callout_stop(&chp->ch_callout); 183 /* remove this command from xfer queue */ 184 wdc_free_xfer(chp, xfer); 185 sc_xfer->error = XS_DRIVER_STUFFUP; 186 scsipi_done(sc_xfer); 187 } 188 189 int 190 wdc_atapi_get_params(chan, drive, flags, id) 191 struct scsipi_channel *chan; 192 int drive, flags; 193 struct ataparams *id; 194 { 195 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 196 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 197 struct wdc_command wdc_c; 198 199 /* if no ATAPI device detected at wdc attach time, skip */ 200 /* 201 * XXX this will break scsireprobe if this is of any interest for 202 * ATAPI devices one day. 203 */ 204 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 205 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 206 drive), DEBUG_PROBE); 207 return -1; 208 } 209 memset(&wdc_c, 0, sizeof(struct wdc_command)); 210 wdc_c.r_command = ATAPI_SOFT_RESET; 211 wdc_c.r_st_bmask = 0; 212 wdc_c.r_st_pmask = 0; 213 wdc_c.flags = AT_POLL; 214 wdc_c.timeout = WDC_RESET_WAIT; 215 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 216 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 217 " drive %s:%d:%d: driver failed\n", 218 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 219 panic("wdc_atapi_get_params"); 220 } 221 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 222 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 223 "failed for drive %s:%d:%d: error 0x%x\n", 224 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 225 wdc_c.r_error), DEBUG_PROBE); 226 return -1; 227 } 228 chp->ch_drive[drive].state = 0; 229 230 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 231 232 /* Some ATAPI devices need a bit more time after software reset. */ 233 delay(5000); 234 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 235 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 236 "failed for drive %s:%d:%d: error 0x%x\n", 237 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 238 wdc_c.r_error), DEBUG_PROBE); 239 return -1; 240 } 241 return 0; 242 } 243 244 void 245 wdc_atapi_probe_device(sc, target) 246 struct atapibus_softc *sc; 247 int target; 248 { 249 struct scsipi_channel *chan = sc->sc_channel; 250 struct scsipi_periph *periph; 251 struct ataparams ids; 252 struct ataparams *id = &ids; 253 struct ata_drive_datas *drvp = &sc->sc_drvs[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; 289 290 sa.sa_periph = periph; 291 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 292 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 293 T_REMOV : T_FIXED; 294 scsipi_strvis(model, 40, id->atap_model, 40); 295 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 296 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 297 sa.sa_inqbuf.vendor = model; 298 sa.sa_inqbuf.product = serial_number; 299 sa.sa_inqbuf.revision = firmware_revision; 300 301 /* 302 * Determine the operating mode capabilities of the device. 303 */ 304 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 305 periph->periph_cap |= PERIPH_CAP_CMD16; 306 /* XXX This is gross. */ 307 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 308 309 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 310 311 if (drvp->drv_softc) 312 wdc_probe_caps(drvp); 313 } 314 } 315 316 void 317 wdc_atapi_scsipi_request(chan, req, arg) 318 struct scsipi_channel *chan; 319 scsipi_adapter_req_t req; 320 void *arg; 321 { 322 struct scsipi_adapter *adapt = chan->chan_adapter; 323 struct scsipi_periph *periph; 324 struct scsipi_xfer *sc_xfer; 325 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 326 struct wdc_xfer *xfer; 327 int channel = chan->chan_channel; 328 int drive, s; 329 330 switch (req) { 331 case ADAPTER_REQ_RUN_XFER: 332 sc_xfer = arg; 333 periph = sc_xfer->xs_periph; 334 drive = periph->periph_target; 335 336 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 337 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 338 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 339 sc_xfer->error = XS_DRIVER_STUFFUP; 340 scsipi_done(sc_xfer); 341 return; 342 } 343 344 xfer = wdc_get_xfer(WDC_NOSLEEP); 345 if (xfer == NULL) { 346 sc_xfer->error = XS_RESOURCE_SHORTAGE; 347 scsipi_done(sc_xfer); 348 return; 349 } 350 351 if (sc_xfer->xs_control & XS_CTL_POLL) 352 xfer->c_flags |= C_POLL; 353 xfer->drive = drive; 354 xfer->c_flags |= C_ATAPI; 355 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 356 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 357 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 358 /* 359 * DVD authentication commands must always be done in 360 * PIO mode. 361 */ 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 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, sc_xfer->timeout * hz / 1000, 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\n"); 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 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 527 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 528 ata_dmaerr(drvp); 529 } 530 /* 531 * if the request sense command was aborted, report the short sense 532 * previously recorded, else continue normal processing 533 */ 534 535 if (xfer->c_flags & C_DMA) 536 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 537 ? WDC_DMA_READ : 0; 538 again: 539 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 540 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 541 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 542 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 543 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 544 "ire 0x%x :", xfer->c_bcount, 545 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 546 547 switch (phase) { 548 case PHASE_CMDOUT: 549 cmd = sc_xfer->cmd; 550 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 551 /* Init the DMA channel if necessary */ 552 if (xfer->c_flags & C_DMA) { 553 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 554 chp->channel, xfer->drive, 555 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 556 sc_xfer->error = XS_DRIVER_STUFFUP; 557 break; 558 } 559 } 560 /* send packet command */ 561 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 562 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 563 if (drvp->drive_flags & DRIVE_CAP32) { 564 bus_space_write_multi_4(chp->data32iot, 565 chp->data32ioh, 0, 566 (u_int32_t *)cmd, 567 sc_xfer->cmdlen >> 2); 568 } else { 569 bus_space_write_multi_2(chp->cmd_iot, 570 chp->cmd_ioh, wd_data, 571 (u_int16_t *)cmd, 572 sc_xfer->cmdlen >> 1); 573 } 574 } else { 575 if (drvp->drive_flags & DRIVE_CAP32) { 576 bus_space_write_multi_stream_4(chp->data32iot, 577 chp->data32ioh, 0, 578 (u_int32_t *)cmd, 579 sc_xfer->cmdlen >> 2); 580 } else { 581 bus_space_write_multi_stream_2(chp->cmd_iot, 582 chp->cmd_ioh, wd_data, 583 (u_int16_t *)cmd, 584 sc_xfer->cmdlen >> 1); 585 } 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 /* turn off DMA channel */ 751 if (xfer->c_flags & C_DMA) { 752 xfer->c_bcount -= sc_xfer->datalen; 753 } 754 sc_xfer->resid = xfer->c_bcount; 755 if (chp->ch_status & WDCS_ERR) { 756 /* save the short sense */ 757 sc_xfer->error = XS_SHORTSENSE; 758 sc_xfer->sense.atapi_sense = chp->ch_error; 759 if ((sc_xfer->xs_periph->periph_quirks & 760 PQUIRK_NOSENSE) == 0) { 761 /* ask scsipi to send a REQUEST_SENSE */ 762 sc_xfer->error = XS_BUSY; 763 sc_xfer->status = SCSI_CHECK; 764 } else if (chp->wdc->dma_status & 765 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 766 ata_dmaerr(drvp); 767 sc_xfer->error = XS_RESET; 768 wdc_atapi_reset(chp, xfer); 769 return (1); 770 } 771 } 772 if (xfer->c_bcount != 0) { 773 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 774 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 775 } 776 #ifdef DIAGNOSTIC 777 if (xfer->c_bcount < 0) { 778 printf("wdc_atapi_intr warning: bcount value " 779 "is %d after io\n", xfer->c_bcount); 780 } 781 #endif 782 break; 783 784 default: 785 if (++retries<500) { 786 DELAY(100); 787 chp->ch_status = bus_space_read_1(chp->cmd_iot, 788 chp->cmd_ioh, wd_status); 789 chp->ch_error = bus_space_read_1(chp->cmd_iot, 790 chp->cmd_ioh, wd_error); 791 goto again; 792 } 793 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 794 if (chp->ch_status & WDCS_ERR) { 795 sc_xfer->error = XS_SHORTSENSE; 796 sc_xfer->sense.atapi_sense = chp->ch_error; 797 } else { 798 if (xfer->c_flags & C_DMA) { 799 ata_dmaerr(drvp); 800 } 801 sc_xfer->error = XS_RESET; 802 wdc_atapi_reset(chp, xfer); 803 return (1); 804 } 805 } 806 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 807 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 808 DEBUG_INTR); 809 wdc_atapi_done(chp, xfer); 810 return (1); 811 } 812 813 int 814 wdc_atapi_ctrl(chp, xfer, irq) 815 struct channel_softc *chp; 816 struct wdc_xfer *xfer; 817 int irq; 818 { 819 struct scsipi_xfer *sc_xfer = xfer->cmd; 820 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 821 char *errstring = NULL; 822 int delay = (irq == 0) ? ATAPI_DELAY : 0; 823 824 /* Ack interrupt done in wait_for_unbusy */ 825 again: 826 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 827 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 828 DEBUG_INTR | DEBUG_FUNCS); 829 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 830 WDSD_IBM | (xfer->drive << 4)); 831 switch (drvp->state) { 832 case PIOMODE: 833 /* Don't try to set mode if controller can't be adjusted */ 834 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 835 goto ready; 836 /* Also don't try if the drive didn't report its mode */ 837 if ((drvp->drive_flags & DRIVE_MODE) == 0) 838 goto ready; 839 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 840 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 841 drvp->state = PIOMODE_WAIT; 842 break; 843 case PIOMODE_WAIT: 844 errstring = "piomode"; 845 if (wait_for_unbusy(chp, delay)) 846 goto timeout; 847 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 848 chp->wdc->irqack(chp); 849 if (chp->ch_status & WDCS_ERR) { 850 if (chp->ch_error == WDCE_ABRT) { 851 /* 852 * some ATAPI drives rejects pio settings. 853 * all we can do here is fall back to PIO 0 854 */ 855 drvp->drive_flags &= ~DRIVE_MODE; 856 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 857 drvp->PIO_mode = 0; 858 drvp->DMA_mode = 0; 859 printf("%s:%d:%d: pio setting rejected, " 860 "falling back to PIO mode 0\n", 861 chp->wdc->sc_dev.dv_xname, 862 chp->channel, xfer->drive); 863 chp->wdc->set_modes(chp); 864 goto ready; 865 } 866 goto error; 867 } 868 /* fall through */ 869 870 case DMAMODE: 871 if (drvp->drive_flags & DRIVE_UDMA) { 872 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 873 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 874 } else if (drvp->drive_flags & DRIVE_DMA) { 875 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 876 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 877 } else { 878 goto ready; 879 } 880 drvp->state = DMAMODE_WAIT; 881 break; 882 case DMAMODE_WAIT: 883 errstring = "dmamode"; 884 if (wait_for_unbusy(chp, delay)) 885 goto timeout; 886 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 887 chp->wdc->irqack(chp); 888 if (chp->ch_status & WDCS_ERR) 889 goto error; 890 /* fall through */ 891 892 case READY: 893 ready: 894 drvp->state = READY; 895 xfer->c_intr = wdc_atapi_intr; 896 callout_stop(&chp->ch_callout); 897 wdc_atapi_start(chp, xfer); 898 return 1; 899 } 900 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 901 chp->ch_flags |= WDCF_IRQ_WAIT; 902 xfer->c_intr = wdc_atapi_ctrl; 903 } else { 904 goto again; 905 } 906 return 1; 907 908 timeout: 909 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 910 return 0; /* IRQ was not for us */ 911 } 912 printf("%s:%d:%d: %s timed out\n", 913 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 914 sc_xfer->error = XS_TIMEOUT; 915 wdc_atapi_reset(chp, xfer); 916 return 1; 917 error: 918 printf("%s:%d:%d: %s ", 919 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 920 errstring); 921 printf("error (0x%x)\n", chp->ch_error); 922 sc_xfer->error = XS_SHORTSENSE; 923 sc_xfer->sense.atapi_sense = chp->ch_error; 924 wdc_atapi_reset(chp, xfer); 925 return 1; 926 } 927 928 void 929 wdc_atapi_done(chp, xfer) 930 struct channel_softc *chp; 931 struct wdc_xfer *xfer; 932 { 933 struct scsipi_xfer *sc_xfer = xfer->cmd; 934 935 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 936 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 937 (u_int)xfer->c_flags), DEBUG_XFERS); 938 callout_stop(&chp->ch_callout); 939 /* remove this command from xfer queue */ 940 wdc_free_xfer(chp, xfer); 941 942 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 943 scsipi_done(sc_xfer); 944 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 945 chp->ch_flags), DEBUG_XFERS); 946 wdcstart(chp); 947 } 948 949 void 950 wdc_atapi_reset(chp, xfer) 951 struct channel_softc *chp; 952 struct wdc_xfer *xfer; 953 { 954 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 955 struct scsipi_xfer *sc_xfer = xfer->cmd; 956 957 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 958 drvp->state = 0; 959 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 960 printf("%s:%d:%d: reset failed\n", 961 chp->wdc->sc_dev.dv_xname, chp->channel, 962 xfer->drive); 963 sc_xfer->error = XS_SELTIMEOUT; 964 } 965 wdc_atapi_done(chp, xfer); 966 return; 967 } 968