atapi_wdc.c revision 1.64
1 /* $NetBSD: atapi_wdc.c,v 1.64 2004/01/01 20:25:22 thorpej 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 1.64 2004/01/01 20:25:22 thorpej 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 #define ATAPI_MODE_DELAY 1000 /* 1s, timeout for SET_FEATYRE cmds */ 85 int wdc_atapi_get_params __P((struct scsipi_channel *, int, 86 struct ataparams *)); 87 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 88 void wdc_atapi_minphys __P((struct buf *bp)); 89 void wdc_atapi_start __P((struct channel_softc *,struct ata_xfer *)); 90 int wdc_atapi_intr __P((struct channel_softc *, struct ata_xfer *, int)); 91 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct ata_xfer *)); 92 void wdc_atapi_phase_complete __P((struct ata_xfer *)); 93 void wdc_atapi_done __P((struct channel_softc *, struct ata_xfer *)); 94 void wdc_atapi_reset __P((struct channel_softc *, struct ata_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 static 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(ata_sc) 112 struct atabus_softc *ata_sc; 113 { 114 struct channel_softc *chp = ata_sc->sc_chan; 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(&ata_sc->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 ata_xfer *xfer; 177 { 178 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 179 180 callout_stop(&chp->ch_callout); 181 /* remove this command from xfer queue */ 182 wdc_free_xfer(chp, xfer); 183 sc_xfer->error = XS_DRIVER_STUFFUP; 184 scsipi_done(sc_xfer); 185 } 186 187 int 188 wdc_atapi_get_params(chan, drive, id) 189 struct scsipi_channel *chan; 190 int drive; 191 struct ataparams *id; 192 { 193 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 194 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 195 struct wdc_command wdc_c; 196 197 /* if no ATAPI device detected at wdc attach time, skip */ 198 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 199 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 200 drive), DEBUG_PROBE); 201 return -1; 202 } 203 204 memset(&wdc_c, 0, sizeof(struct wdc_command)); 205 wdc_c.r_command = ATAPI_SOFT_RESET; 206 wdc_c.r_st_bmask = 0; 207 wdc_c.r_st_pmask = 0; 208 wdc_c.flags = AT_POLL; 209 wdc_c.timeout = WDC_RESET_WAIT; 210 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 211 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 212 " drive %s:%d:%d: driver failed\n", 213 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 214 panic("wdc_atapi_get_params"); 215 } 216 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 217 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 218 "failed for drive %s:%d:%d: error 0x%x\n", 219 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 220 wdc_c.r_error), DEBUG_PROBE); 221 return -1; 222 } 223 chp->ch_drive[drive].state = 0; 224 225 bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_status], 0); 226 227 /* Some ATAPI devices need a bit more time after software reset. */ 228 delay(5000); 229 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 230 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 231 "failed for drive %s:%d:%d: error 0x%x\n", 232 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 233 wdc_c.r_error), DEBUG_PROBE); 234 return -1; 235 } 236 return 0; 237 } 238 239 void 240 wdc_atapi_probe_device(sc, target) 241 struct atapibus_softc *sc; 242 int target; 243 { 244 struct scsipi_channel *chan = sc->sc_channel; 245 struct scsipi_periph *periph; 246 struct ataparams ids; 247 struct ataparams *id = &ids; 248 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 249 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 250 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 251 struct scsipibus_attach_args sa; 252 char serial_number[21], model[41], firmware_revision[9]; 253 254 /* skip if already attached */ 255 if (scsipi_lookup_periph(chan, target, 0) != NULL) 256 return; 257 258 if (wdc_atapi_get_params(chan, target, id) == 0) { 259 #ifdef ATAPI_DEBUG_PROBE 260 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 261 sc->sc_dev.dv_xname, target, 262 id->atap_config & ATAPI_CFG_CMD_MASK, 263 id->atap_config & ATAPI_CFG_DRQ_MASK); 264 #endif 265 periph = scsipi_alloc_periph(M_NOWAIT); 266 if (periph == NULL) { 267 printf("%s: unable to allocate periph for drive %d\n", 268 sc->sc_dev.dv_xname, target); 269 return; 270 } 271 periph->periph_dev = NULL; 272 periph->periph_channel = chan; 273 periph->periph_switch = &atapi_probe_periphsw; 274 periph->periph_target = target; 275 periph->periph_lun = 0; 276 periph->periph_quirks = PQUIRK_ONLYBIG; 277 278 #ifdef SCSIPI_DEBUG 279 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 280 SCSIPI_DEBUG_TARGET == target) 281 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 282 #endif 283 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 284 if (id->atap_config & ATAPI_CFG_REMOV) 285 periph->periph_flags |= PERIPH_REMOVABLE; 286 if (periph->periph_type == T_SEQUENTIAL) 287 drvp->drive_flags |= DRIVE_ATAPIST; 288 289 sa.sa_periph = periph; 290 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 291 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 292 T_REMOV : T_FIXED; 293 scsipi_strvis(model, 40, id->atap_model, 40); 294 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 295 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 296 sa.sa_inqbuf.vendor = model; 297 sa.sa_inqbuf.product = serial_number; 298 sa.sa_inqbuf.revision = firmware_revision; 299 300 /* 301 * Determine the operating mode capabilities of the device. 302 */ 303 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 304 periph->periph_cap |= PERIPH_CAP_CMD16; 305 /* XXX This is gross. */ 306 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 307 308 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 309 310 if (drvp->drv_softc) 311 wdc_probe_caps(drvp); 312 else 313 drvp->drive_flags &= ~DRIVE_ATAPI; 314 } 315 } 316 317 void 318 wdc_atapi_scsipi_request(chan, req, arg) 319 struct scsipi_channel *chan; 320 scsipi_adapter_req_t req; 321 void *arg; 322 { 323 struct scsipi_adapter *adapt = chan->chan_adapter; 324 struct scsipi_periph *periph; 325 struct scsipi_xfer *sc_xfer; 326 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 327 struct ata_xfer *xfer; 328 int channel = chan->chan_channel; 329 int drive, s; 330 331 switch (req) { 332 case ADAPTER_REQ_RUN_XFER: 333 sc_xfer = arg; 334 periph = sc_xfer->xs_periph; 335 drive = periph->periph_target; 336 337 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 338 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 339 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 340 sc_xfer->error = XS_DRIVER_STUFFUP; 341 scsipi_done(sc_xfer); 342 return; 343 } 344 345 xfer = wdc_get_xfer(WDC_NOSLEEP); 346 if (xfer == NULL) { 347 sc_xfer->error = XS_RESOURCE_SHORTAGE; 348 scsipi_done(sc_xfer); 349 return; 350 } 351 352 if (sc_xfer->xs_control & XS_CTL_POLL) 353 xfer->c_flags |= C_POLL; 354 if ((wdc->channels[channel]->ch_drive[drive].drive_flags & 355 (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) 356 xfer->c_flags |= C_DMA; 357 xfer->c_drive = drive; 358 xfer->c_flags |= C_ATAPI; 359 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 360 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 361 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 362 /* 363 * DVD authentication commands must always be done in 364 * PIO mode. 365 */ 366 xfer->c_flags &= ~C_DMA; 367 } 368 /* 369 * DMA can't deal with transfers which are not a multiple of 370 * 2 bytes. It's a bug to request such transfers for ATAPI 371 * but as the request can come from userland, we have to 372 * protect against it. 373 * Also some devices seems to not handle DMA xfers of less than 374 * 4 bytes. 375 */ 376 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 377 xfer->c_flags &= ~C_DMA; 378 379 xfer->c_cmd = sc_xfer; 380 xfer->c_databuf = sc_xfer->data; 381 xfer->c_bcount = sc_xfer->datalen; 382 xfer->c_start = wdc_atapi_start; 383 xfer->c_intr = wdc_atapi_intr; 384 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 385 xfer->c_dscpoll = 0; 386 s = splbio(); 387 wdc_exec_xfer(wdc->channels[channel], xfer); 388 #ifdef DIAGNOSTIC 389 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 390 (sc_xfer->xs_status & XS_STS_DONE) == 0) 391 panic("wdc_atapi_scsipi_request: polled command " 392 "not done"); 393 #endif 394 splx(s); 395 return; 396 397 default: 398 /* Not supported, nothing to do. */ 399 ; 400 } 401 } 402 403 void 404 wdc_atapi_start(chp, xfer) 405 struct channel_softc *chp; 406 struct ata_xfer *xfer; 407 { 408 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 409 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 410 int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0; 411 char *errstring; 412 413 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 414 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 415 sc_xfer->xs_control), DEBUG_XFERS); 416 if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER)) 417 drvp->n_xfers++; 418 /* Do control operations specially. */ 419 if (__predict_false(drvp->state < READY)) { 420 /* If it's not a polled command, we need the kenrel thread */ 421 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 && 422 (chp->ch_flags & WDCF_TH_RUN) == 0) { 423 chp->ch_queue->queue_freeze++; 424 wakeup(&chp->thread); 425 return; 426 } 427 /* 428 * disable interrupts, all commands here should be quick 429 * enouth to be able to poll, and we don't go here that often 430 */ 431 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 432 WDCTL_4BIT | WDCTL_IDS); 433 if (chp->wdc->cap & WDC_CAPABILITY_SELECT) 434 chp->wdc->select(chp, xfer->c_drive); 435 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 436 WDSD_IBM | (xfer->c_drive << 4)); 437 /* Don't try to set mode if controller can't be adjusted */ 438 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 439 goto ready; 440 /* Also don't try if the drive didn't report its mode */ 441 if ((drvp->drive_flags & DRIVE_MODE) == 0) 442 goto ready; 443 errstring = "unbusy"; 444 if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags)) 445 goto timeout; 446 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 447 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 448 errstring = "piomode"; 449 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 450 goto timeout; 451 if (chp->ch_status & WDCS_ERR) { 452 if (chp->ch_error == WDCE_ABRT) { 453 /* 454 * some ATAPI drives rejects pio settings. 455 * all we can do here is fall back to PIO 0 456 */ 457 drvp->drive_flags &= ~DRIVE_MODE; 458 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 459 drvp->PIO_mode = 0; 460 drvp->DMA_mode = 0; 461 printf("%s:%d:%d: pio setting rejected, " 462 "falling back to PIO mode 0\n", 463 chp->wdc->sc_dev.dv_xname, 464 chp->channel, xfer->c_drive); 465 chp->wdc->set_modes(chp); 466 goto ready; 467 } 468 goto error; 469 } 470 if (drvp->drive_flags & DRIVE_UDMA) { 471 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 472 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 473 } else if (drvp->drive_flags & DRIVE_DMA) { 474 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 475 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 476 } else { 477 goto ready; 478 } 479 errstring = "dmamode"; 480 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 481 goto timeout; 482 if (chp->ch_status & WDCS_ERR) 483 goto error; 484 ready: 485 drvp->state = READY; 486 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 487 WDCTL_4BIT); 488 } 489 /* start timeout machinery */ 490 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 491 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 492 wdctimeout, chp); 493 494 if (chp->wdc->cap & WDC_CAPABILITY_SELECT) 495 chp->wdc->select(chp, xfer->c_drive); 496 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 497 WDSD_IBM | (xfer->c_drive << 4)); 498 switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) { 499 case WDCWAIT_OK: 500 break; 501 case WDCWAIT_TOUT: 502 printf("wdc_atapi_start: not ready, st = %02x\n", 503 chp->ch_status); 504 sc_xfer->error = XS_TIMEOUT; 505 wdc_atapi_reset(chp, xfer); 506 return; 507 case WDCWAIT_THR: 508 return; 509 } 510 511 /* 512 * Even with WDCS_ERR, the device should accept a command packet 513 * Limit length to what can be stuffed into the cylinder register 514 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 515 * but not all devices do that and it's not obvious from the 516 * ATAPI spec that that behaviour should be expected. If more 517 * data is necessary, multiple data transfer phases will be done. 518 */ 519 520 wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD, 521 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 522 0, 0, 0, 523 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 524 525 /* 526 * If there is no interrupt for CMD input, busy-wait for it (done in 527 * the interrupt routine. If it is a polled command, call the interrupt 528 * routine until command is done. 529 */ 530 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 531 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 532 /* Wait for at last 400ns for status bit to be valid */ 533 DELAY(1); 534 if (chp->ch_flags & WDCF_DMA_WAIT) { 535 wdc_dmawait(chp, xfer, sc_xfer->timeout); 536 chp->ch_flags &= ~WDCF_DMA_WAIT; 537 } 538 wdc_atapi_intr(chp, xfer, 0); 539 } else { 540 chp->ch_flags |= WDCF_IRQ_WAIT; 541 } 542 if (sc_xfer->xs_control & XS_CTL_POLL) { 543 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 544 /* Wait for at last 400ns for status bit to be valid */ 545 DELAY(1); 546 wdc_atapi_intr(chp, xfer, 0); 547 } 548 } 549 return; 550 timeout: 551 printf("%s:%d:%d: %s timed out\n", 552 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->c_drive, errstring); 553 sc_xfer->error = XS_TIMEOUT; 554 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 555 wdc_atapi_reset(chp, xfer); 556 return; 557 error: 558 printf("%s:%d:%d: %s ", 559 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->c_drive, 560 errstring); 561 printf("error (0x%x)\n", chp->ch_error); 562 sc_xfer->error = XS_SHORTSENSE; 563 sc_xfer->sense.atapi_sense = chp->ch_error; 564 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 565 wdc_atapi_reset(chp, xfer); 566 return; 567 } 568 569 int 570 wdc_atapi_intr(chp, xfer, irq) 571 struct channel_softc *chp; 572 struct ata_xfer *xfer; 573 int irq; 574 { 575 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 576 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 577 int len, phase, i, retries=0; 578 int ire; 579 int dma_flags = 0; 580 void *cmd; 581 582 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 583 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 584 585 /* Is it not a transfer, but a control operation? */ 586 if (drvp->state < READY) { 587 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 588 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->c_drive, 589 drvp->state); 590 panic("wdc_atapi_intr: bad state"); 591 } 592 /* 593 * If we missed an interrupt in a PIO transfer, reset and restart. 594 * Don't try to continue transfer, we may have missed cycles. 595 */ 596 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 597 sc_xfer->error = XS_TIMEOUT; 598 wdc_atapi_reset(chp, xfer); 599 return 1; 600 } 601 602 /* Ack interrupt done in wdc_wait_for_unbusy */ 603 if (chp->wdc->cap & WDC_CAPABILITY_SELECT) 604 chp->wdc->select(chp, xfer->c_drive); 605 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 606 WDSD_IBM | (xfer->c_drive << 4)); 607 if (wdc_wait_for_unbusy(chp, 608 (irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) { 609 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 610 return 0; /* IRQ was not for us */ 611 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 612 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->c_drive, 613 xfer->c_bcount, xfer->c_skip); 614 if (xfer->c_flags & C_DMA) { 615 ata_dmaerr(drvp, 616 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 617 } 618 sc_xfer->error = XS_TIMEOUT; 619 wdc_atapi_reset(chp, xfer); 620 return 1; 621 } 622 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 623 chp->wdc->irqack(chp); 624 625 /* 626 * If we missed an IRQ and were using DMA, flag it as a DMA error 627 * and reset device. 628 */ 629 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 630 ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); 631 sc_xfer->error = XS_RESET; 632 wdc_atapi_reset(chp, xfer); 633 return (1); 634 } 635 /* 636 * if the request sense command was aborted, report the short sense 637 * previously recorded, else continue normal processing 638 */ 639 640 if (xfer->c_flags & C_DMA) 641 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 642 ? WDC_DMA_READ : 0; 643 again: 644 len = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_lo], 0) + 645 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_hi], 0); 646 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_ireason], 0); 647 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 648 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 649 "ire 0x%x :", xfer->c_bcount, 650 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 651 652 switch (phase) { 653 case PHASE_CMDOUT: 654 cmd = sc_xfer->cmd; 655 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 656 /* Init the DMA channel if necessary */ 657 if (xfer->c_flags & C_DMA) { 658 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 659 chp->channel, xfer->c_drive, 660 xfer->c_databuf, xfer->c_bcount, dma_flags) != 0) { 661 sc_xfer->error = XS_DRIVER_STUFFUP; 662 break; 663 } 664 } 665 /* send packet command */ 666 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 667 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 668 if (drvp->drive_flags & DRIVE_CAP32) 669 bus_space_write_multi_4(chp->data32iot, 670 chp->data32ioh, 0, (u_int32_t *)cmd, 671 sc_xfer->cmdlen >> 2); 672 else 673 bus_space_write_multi_2(chp->cmd_iot, 674 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 675 sc_xfer->cmdlen >> 1); 676 } else { 677 if (drvp->drive_flags & DRIVE_CAP32) 678 bus_space_write_multi_stream_4(chp->data32iot, 679 chp->data32ioh, 0, (u_int32_t *)cmd, 680 sc_xfer->cmdlen >> 2); 681 else 682 bus_space_write_multi_stream_2(chp->cmd_iot, 683 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 684 sc_xfer->cmdlen >> 1); 685 } 686 /* Start the DMA channel if necessary */ 687 if (xfer->c_flags & C_DMA) { 688 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 689 chp->channel, xfer->c_drive); 690 chp->ch_flags |= WDCF_DMA_WAIT; 691 } 692 693 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 694 chp->ch_flags |= WDCF_IRQ_WAIT; 695 } 696 return 1; 697 698 case PHASE_DATAOUT: 699 /* write data */ 700 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 701 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 702 (xfer->c_flags & C_DMA) != 0) { 703 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 704 if (xfer->c_flags & C_DMA) { 705 ata_dmaerr(drvp, 706 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 707 } 708 sc_xfer->error = XS_TIMEOUT; 709 wdc_atapi_reset(chp, xfer); 710 return 1; 711 } 712 if (xfer->c_bcount < len) { 713 printf("wdc_atapi_intr: warning: write only " 714 "%d of %d requested bytes\n", xfer->c_bcount, len); 715 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 716 bus_space_write_multi_2(chp->cmd_iot, 717 chp->cmd_iohs[wd_data], 0, 718 (u_int16_t *)((char *)xfer->c_databuf + 719 xfer->c_skip), 720 xfer->c_bcount >> 1); 721 } else { 722 bus_space_write_multi_stream_2(chp->cmd_iot, 723 chp->cmd_iohs[wd_data], 0, 724 (u_int16_t *)((char *)xfer->c_databuf + 725 xfer->c_skip), 726 xfer->c_bcount >> 1); 727 } 728 for (i = xfer->c_bcount; i < len; i += 2) 729 bus_space_write_2(chp->cmd_iot, 730 chp->cmd_iohs[wd_data], 0, 0); 731 xfer->c_skip += xfer->c_bcount; 732 xfer->c_bcount = 0; 733 } else { 734 if (drvp->drive_flags & DRIVE_CAP32) { 735 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 736 bus_space_write_multi_4(chp->data32iot, 737 chp->data32ioh, 0, 738 (u_int32_t *)((char *)xfer->c_databuf + 739 xfer->c_skip), 740 len >> 2); 741 else 742 bus_space_write_multi_stream_4(chp->data32iot, 743 chp->data32ioh, wd_data, 744 (u_int32_t *)((char *)xfer->c_databuf + 745 xfer->c_skip), 746 len >> 2); 747 748 xfer->c_skip += len & 0xfffffffc; 749 xfer->c_bcount -= len & 0xfffffffc; 750 len = len & 0x03; 751 } 752 if (len > 0) { 753 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 754 bus_space_write_multi_2(chp->cmd_iot, 755 chp->cmd_iohs[wd_data], 0, 756 (u_int16_t *)((char *)xfer->c_databuf + 757 xfer->c_skip), 758 len >> 1); 759 else 760 bus_space_write_multi_stream_2(chp->cmd_iot, 761 chp->cmd_iohs[wd_data], 0, 762 (u_int16_t *)((char *)xfer->c_databuf + 763 xfer->c_skip), 764 len >> 1); 765 xfer->c_skip += len; 766 xfer->c_bcount -= len; 767 } 768 } 769 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 770 chp->ch_flags |= WDCF_IRQ_WAIT; 771 } 772 return 1; 773 774 case PHASE_DATAIN: 775 /* Read data */ 776 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 777 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 778 (xfer->c_flags & C_DMA) != 0) { 779 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 780 if (xfer->c_flags & C_DMA) { 781 ata_dmaerr(drvp, 782 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 783 } 784 sc_xfer->error = XS_TIMEOUT; 785 wdc_atapi_reset(chp, xfer); 786 return 1; 787 } 788 if (xfer->c_bcount < len) { 789 printf("wdc_atapi_intr: warning: reading only " 790 "%d of %d bytes\n", xfer->c_bcount, len); 791 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 792 bus_space_read_multi_2(chp->cmd_iot, 793 chp->cmd_iohs[wd_data], 0, 794 (u_int16_t *)((char *)xfer->c_databuf + 795 xfer->c_skip), 796 xfer->c_bcount >> 1); 797 } else { 798 bus_space_read_multi_stream_2(chp->cmd_iot, 799 chp->cmd_iohs[wd_data], 0, 800 (u_int16_t *)((char *)xfer->c_databuf + 801 xfer->c_skip), 802 xfer->c_bcount >> 1); 803 } 804 wdcbit_bucket(chp, len - xfer->c_bcount); 805 xfer->c_skip += xfer->c_bcount; 806 xfer->c_bcount = 0; 807 } else { 808 if (drvp->drive_flags & DRIVE_CAP32) { 809 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 810 bus_space_read_multi_4(chp->data32iot, 811 chp->data32ioh, 0, 812 (u_int32_t *)((char *)xfer->c_databuf + 813 xfer->c_skip), 814 len >> 2); 815 else 816 bus_space_read_multi_stream_4(chp->data32iot, 817 chp->data32ioh, wd_data, 818 (u_int32_t *)((char *)xfer->c_databuf + 819 xfer->c_skip), 820 len >> 2); 821 822 xfer->c_skip += len & 0xfffffffc; 823 xfer->c_bcount -= len & 0xfffffffc; 824 len = len & 0x03; 825 } 826 if (len > 0) { 827 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 828 bus_space_read_multi_2(chp->cmd_iot, 829 chp->cmd_iohs[wd_data], 0, 830 (u_int16_t *)((char *)xfer->c_databuf + 831 xfer->c_skip), 832 len >> 1); 833 else 834 bus_space_read_multi_stream_2(chp->cmd_iot, 835 chp->cmd_iohs[wd_data], 0, 836 (u_int16_t *)((char *)xfer->c_databuf + 837 xfer->c_skip), 838 len >> 1); 839 xfer->c_skip += len; 840 xfer->c_bcount -=len; 841 } 842 } 843 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 844 chp->ch_flags |= WDCF_IRQ_WAIT; 845 } 846 return 1; 847 848 case PHASE_ABORTED: 849 case PHASE_COMPLETED: 850 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 851 if (xfer->c_flags & C_DMA) { 852 xfer->c_bcount -= sc_xfer->datalen; 853 } 854 sc_xfer->resid = xfer->c_bcount; 855 wdc_atapi_phase_complete(xfer); 856 return(1); 857 858 default: 859 if (++retries<500) { 860 DELAY(100); 861 chp->ch_status = bus_space_read_1(chp->cmd_iot, 862 chp->cmd_iohs[wd_status], 0); 863 chp->ch_error = bus_space_read_1(chp->cmd_iot, 864 chp->cmd_iohs[wd_error], 0); 865 goto again; 866 } 867 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 868 if (chp->ch_status & WDCS_ERR) { 869 sc_xfer->error = XS_SHORTSENSE; 870 sc_xfer->sense.atapi_sense = chp->ch_error; 871 } else { 872 if (xfer->c_flags & C_DMA) { 873 ata_dmaerr(drvp, 874 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 875 } 876 sc_xfer->error = XS_RESET; 877 wdc_atapi_reset(chp, xfer); 878 return (1); 879 } 880 } 881 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 882 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 883 DEBUG_INTR); 884 wdc_atapi_done(chp, xfer); 885 return (1); 886 } 887 888 void 889 wdc_atapi_phase_complete(xfer) 890 struct ata_xfer *xfer; 891 { 892 struct channel_softc *chp = xfer->c_chp; 893 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 894 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 895 896 /* wait for DSC if needed */ 897 if (drvp->drive_flags & DRIVE_ATAPIST) { 898 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 899 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 900 xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS); 901 #if 1 902 if (cold) 903 panic("wdc_atapi_phase_complete: cold"); 904 #endif 905 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10, 906 AT_POLL) == WDCWAIT_TOUT) { 907 /* 10ms not enough, try again in 1 tick */ 908 if (xfer->c_dscpoll++ > 909 mstohz(sc_xfer->timeout)) { 910 printf("%s:%d:%d: wait_for_dsc " 911 "failed\n", 912 chp->wdc->sc_dev.dv_xname, 913 chp->channel, xfer->c_drive); 914 sc_xfer->error = XS_TIMEOUT; 915 wdc_atapi_reset(chp, xfer); 916 return; 917 } else 918 callout_reset(&chp->ch_callout, 1, 919 wdc_atapi_polldsc, xfer); 920 return; 921 } 922 } 923 924 /* 925 * Some drive occasionally set WDCS_ERR with 926 * "ATA illegal length indication" in the error 927 * register. If we read some data the sense is valid 928 * anyway, so don't report the error. 929 */ 930 if (chp->ch_status & WDCS_ERR && 931 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 932 sc_xfer->resid == sc_xfer->datalen)) { 933 /* save the short sense */ 934 sc_xfer->error = XS_SHORTSENSE; 935 sc_xfer->sense.atapi_sense = chp->ch_error; 936 if ((sc_xfer->xs_periph->periph_quirks & 937 PQUIRK_NOSENSE) == 0) { 938 /* ask scsipi to send a REQUEST_SENSE */ 939 sc_xfer->error = XS_BUSY; 940 sc_xfer->status = SCSI_CHECK; 941 } else if (chp->wdc->dma_status & 942 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 943 ata_dmaerr(drvp, 944 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 945 sc_xfer->error = XS_RESET; 946 wdc_atapi_reset(chp, xfer); 947 return; 948 } 949 } 950 if (xfer->c_bcount != 0) { 951 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 952 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 953 } 954 #ifdef DIAGNOSTIC 955 if (xfer->c_bcount < 0) { 956 printf("wdc_atapi_intr warning: bcount value " 957 "is %d after io\n", xfer->c_bcount); 958 } 959 #endif 960 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 961 "error 0x%x sense 0x%x\n", sc_xfer->error, 962 sc_xfer->sense.atapi_sense), DEBUG_INTR); 963 wdc_atapi_done(chp, xfer); 964 } 965 966 void 967 wdc_atapi_done(chp, xfer) 968 struct channel_softc *chp; 969 struct ata_xfer *xfer; 970 { 971 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 972 973 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 974 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->c_drive, 975 (u_int)xfer->c_flags), DEBUG_XFERS); 976 callout_stop(&chp->ch_callout); 977 /* remove this command from xfer queue */ 978 wdc_free_xfer(chp, xfer); 979 980 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 981 scsipi_done(sc_xfer); 982 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 983 chp->ch_flags), DEBUG_XFERS); 984 wdcstart(chp); 985 } 986 987 void 988 wdc_atapi_reset(chp, xfer) 989 struct channel_softc *chp; 990 struct ata_xfer *xfer; 991 { 992 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 993 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 994 995 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 996 drvp->state = 0; 997 if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) { 998 printf("%s:%d:%d: reset failed\n", 999 chp->wdc->sc_dev.dv_xname, chp->channel, 1000 xfer->c_drive); 1001 sc_xfer->error = XS_SELTIMEOUT; 1002 } 1003 wdc_atapi_done(chp, xfer); 1004 return; 1005 } 1006 1007 static void 1008 wdc_atapi_polldsc(arg) 1009 void *arg; 1010 { 1011 wdc_atapi_phase_complete(arg); 1012 } 1013
Indexes created Mon Sep 22 13:09:51 GMT 2025