atapi_wdc.c revision 1.68
1 /* $NetBSD: atapi_wdc.c,v 1.68 2004/01/03 23:59:58 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 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.68 2004/01/03 23:59:58 thorpej Exp $"); 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 #define ATAPI_MODE_DELAY 1000 /* 1s, timeout for SET_FEATYRE cmds */ 84 85 static int wdc_atapi_get_params(struct scsipi_channel *, int, 86 struct ataparams *); 87 static void wdc_atapi_probe_device(struct atapibus_softc *, int); 88 static void wdc_atapi_minphys (struct buf *bp); 89 static void wdc_atapi_start(struct wdc_channel *,struct ata_xfer *); 90 static int wdc_atapi_intr(struct wdc_channel *, struct ata_xfer *, int); 91 static void wdc_atapi_kill_xfer(struct wdc_channel *, struct ata_xfer *); 92 static void wdc_atapi_phase_complete(struct ata_xfer *); 93 static void wdc_atapi_done(struct wdc_channel *, struct ata_xfer *); 94 static void wdc_atapi_reset(struct wdc_channel *, struct ata_xfer *); 95 static void wdc_atapi_scsipi_request(struct scsipi_channel *, 96 scsipi_adapter_req_t, void *); 97 static void wdc_atapi_kill_pending(struct scsipi_periph *); 98 static void wdc_atapi_polldsc(void *arg); 99 100 #define MAX_SIZE MAXPHYS 101 102 static 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(struct atabus_softc *ata_sc) 112 { 113 struct wdc_channel *chp = ata_sc->sc_chan; 114 struct wdc_softc *wdc = chp->ch_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->ch_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(&ata_sc->sc_dev, chan, atapiprint); 143 } 144 145 static void 146 wdc_atapi_minphys(struct buf *bp) 147 { 148 149 if (bp->b_bcount > MAX_SIZE) 150 bp->b_bcount = MAX_SIZE; 151 minphys(bp); 152 } 153 154 /* 155 * Kill off all pending xfers for a periph. 156 * 157 * Must be called at splbio(). 158 */ 159 static void 160 wdc_atapi_kill_pending(struct scsipi_periph *periph) 161 { 162 struct wdc_softc *wdc = 163 (void *)periph->periph_channel->chan_adapter->adapt_dev; 164 struct wdc_channel *chp = 165 wdc->channels[periph->periph_channel->chan_channel]; 166 167 wdc_kill_pending(chp); 168 } 169 170 static void 171 wdc_atapi_kill_xfer(struct wdc_channel *chp, struct ata_xfer *xfer) 172 { 173 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 174 175 callout_stop(&chp->ch_callout); 176 /* remove this command from xfer queue */ 177 wdc_free_xfer(chp, xfer); 178 sc_xfer->error = XS_DRIVER_STUFFUP; 179 scsipi_done(sc_xfer); 180 } 181 182 static int 183 wdc_atapi_get_params(struct scsipi_channel *chan, int drive, 184 struct ataparams *id) 185 { 186 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 187 struct wdc_channel *chp = wdc->channels[chan->chan_channel]; 188 struct wdc_command wdc_c; 189 190 /* if no ATAPI device detected at wdc attach time, skip */ 191 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 192 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 193 drive), DEBUG_PROBE); 194 return -1; 195 } 196 197 memset(&wdc_c, 0, sizeof(struct wdc_command)); 198 wdc_c.r_command = ATAPI_SOFT_RESET; 199 wdc_c.r_st_bmask = 0; 200 wdc_c.r_st_pmask = 0; 201 wdc_c.flags = AT_POLL; 202 wdc_c.timeout = WDC_RESET_WAIT; 203 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 204 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 205 " drive %s:%d:%d: driver failed\n", 206 wdc->sc_dev.dv_xname, chp->ch_channel, drive); 207 panic("wdc_atapi_get_params"); 208 } 209 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 210 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 211 "failed for drive %s:%d:%d: error 0x%x\n", 212 wdc->sc_dev.dv_xname, chp->ch_channel, drive, 213 wdc_c.r_error), DEBUG_PROBE); 214 return -1; 215 } 216 chp->ch_drive[drive].state = 0; 217 218 bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_status], 0); 219 220 /* Some ATAPI devices need a bit more time after software reset. */ 221 delay(5000); 222 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 223 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 224 "failed for drive %s:%d:%d: error 0x%x\n", 225 wdc->sc_dev.dv_xname, chp->ch_channel, drive, 226 wdc_c.r_error), DEBUG_PROBE); 227 return -1; 228 } 229 return 0; 230 } 231 232 static void 233 wdc_atapi_probe_device(struct atapibus_softc *sc, int target) 234 { 235 struct scsipi_channel *chan = sc->sc_channel; 236 struct scsipi_periph *periph; 237 struct ataparams ids; 238 struct ataparams *id = &ids; 239 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 240 struct wdc_channel *chp = wdc->channels[chan->chan_channel]; 241 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 242 struct scsipibus_attach_args sa; 243 char serial_number[21], model[41], firmware_revision[9]; 244 245 /* skip if already attached */ 246 if (scsipi_lookup_periph(chan, target, 0) != NULL) 247 return; 248 249 if (wdc_atapi_get_params(chan, target, id) == 0) { 250 #ifdef ATAPI_DEBUG_PROBE 251 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 252 sc->sc_dev.dv_xname, target, 253 id->atap_config & ATAPI_CFG_CMD_MASK, 254 id->atap_config & ATAPI_CFG_DRQ_MASK); 255 #endif 256 periph = scsipi_alloc_periph(M_NOWAIT); 257 if (periph == NULL) { 258 printf("%s: unable to allocate periph for drive %d\n", 259 sc->sc_dev.dv_xname, target); 260 return; 261 } 262 periph->periph_dev = NULL; 263 periph->periph_channel = chan; 264 periph->periph_switch = &atapi_probe_periphsw; 265 periph->periph_target = target; 266 periph->periph_lun = 0; 267 periph->periph_quirks = PQUIRK_ONLYBIG; 268 269 #ifdef SCSIPI_DEBUG 270 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 271 SCSIPI_DEBUG_TARGET == target) 272 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 273 #endif 274 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 275 if (id->atap_config & ATAPI_CFG_REMOV) 276 periph->periph_flags |= PERIPH_REMOVABLE; 277 if (periph->periph_type == T_SEQUENTIAL) 278 drvp->drive_flags |= DRIVE_ATAPIST; 279 280 sa.sa_periph = periph; 281 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 282 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 283 T_REMOV : T_FIXED; 284 scsipi_strvis(model, 40, id->atap_model, 40); 285 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 286 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 287 sa.sa_inqbuf.vendor = model; 288 sa.sa_inqbuf.product = serial_number; 289 sa.sa_inqbuf.revision = firmware_revision; 290 291 /* 292 * Determine the operating mode capabilities of the device. 293 */ 294 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 295 periph->periph_cap |= PERIPH_CAP_CMD16; 296 /* XXX This is gross. */ 297 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 298 299 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 300 301 if (drvp->drv_softc) 302 wdc_probe_caps(drvp); 303 else 304 drvp->drive_flags &= ~DRIVE_ATAPI; 305 } 306 } 307 308 static void 309 wdc_atapi_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 310 void *arg) 311 { 312 struct scsipi_adapter *adapt = chan->chan_adapter; 313 struct scsipi_periph *periph; 314 struct scsipi_xfer *sc_xfer; 315 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 316 struct ata_xfer *xfer; 317 int channel = chan->chan_channel; 318 int drive, s; 319 320 switch (req) { 321 case ADAPTER_REQ_RUN_XFER: 322 sc_xfer = arg; 323 periph = sc_xfer->xs_periph; 324 drive = periph->periph_target; 325 326 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 327 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 328 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 329 sc_xfer->error = XS_DRIVER_STUFFUP; 330 scsipi_done(sc_xfer); 331 return; 332 } 333 334 xfer = wdc_get_xfer(WDC_NOSLEEP); 335 if (xfer == NULL) { 336 sc_xfer->error = XS_RESOURCE_SHORTAGE; 337 scsipi_done(sc_xfer); 338 return; 339 } 340 341 if (sc_xfer->xs_control & XS_CTL_POLL) 342 xfer->c_flags |= C_POLL; 343 if ((wdc->channels[channel]->ch_drive[drive].drive_flags & 344 (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) 345 xfer->c_flags |= C_DMA; 346 xfer->c_drive = drive; 347 xfer->c_flags |= C_ATAPI; 348 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 349 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 350 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 351 /* 352 * DVD authentication commands must always be done in 353 * PIO mode. 354 */ 355 xfer->c_flags &= ~C_DMA; 356 } 357 /* 358 * DMA can't deal with transfers which are not a multiple of 359 * 2 bytes. It's a bug to request such transfers for ATAPI 360 * but as the request can come from userland, we have to 361 * protect against it. 362 * Also some devices seems to not handle DMA xfers of less than 363 * 4 bytes. 364 */ 365 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 366 xfer->c_flags &= ~C_DMA; 367 368 xfer->c_cmd = sc_xfer; 369 xfer->c_databuf = sc_xfer->data; 370 xfer->c_bcount = sc_xfer->datalen; 371 xfer->c_start = wdc_atapi_start; 372 xfer->c_intr = wdc_atapi_intr; 373 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 374 xfer->c_dscpoll = 0; 375 s = splbio(); 376 wdc_exec_xfer(wdc->channels[channel], xfer); 377 #ifdef DIAGNOSTIC 378 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 379 (sc_xfer->xs_status & XS_STS_DONE) == 0) 380 panic("wdc_atapi_scsipi_request: polled command " 381 "not done"); 382 #endif 383 splx(s); 384 return; 385 386 default: 387 /* Not supported, nothing to do. */ 388 ; 389 } 390 } 391 392 static void 393 wdc_atapi_start(struct wdc_channel *chp, struct ata_xfer *xfer) 394 { 395 struct wdc_softc *wdc = chp->ch_wdc; 396 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 397 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 398 int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0; 399 char *errstring; 400 401 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 402 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive, 403 sc_xfer->xs_control), DEBUG_XFERS); 404 if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER)) 405 drvp->n_xfers++; 406 /* Do control operations specially. */ 407 if (__predict_false(drvp->state < READY)) { 408 /* If it's not a polled command, we need the kenrel thread */ 409 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 && 410 (chp->ch_flags & WDCF_TH_RUN) == 0) { 411 chp->ch_queue->queue_freeze++; 412 wakeup(&chp->ch_thread); 413 return; 414 } 415 /* 416 * disable interrupts, all commands here should be quick 417 * enouth to be able to poll, and we don't go here that often 418 */ 419 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 420 WDCTL_4BIT | WDCTL_IDS); 421 if (wdc->cap & WDC_CAPABILITY_SELECT) 422 wdc->select(chp, xfer->c_drive); 423 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 424 WDSD_IBM | (xfer->c_drive << 4)); 425 /* Don't try to set mode if controller can't be adjusted */ 426 if ((wdc->cap & WDC_CAPABILITY_MODE) == 0) 427 goto ready; 428 /* Also don't try if the drive didn't report its mode */ 429 if ((drvp->drive_flags & DRIVE_MODE) == 0) 430 goto ready; 431 errstring = "unbusy"; 432 if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags)) 433 goto timeout; 434 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 435 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 436 errstring = "piomode"; 437 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 438 goto timeout; 439 if (chp->ch_status & WDCS_ERR) { 440 if (chp->ch_error == WDCE_ABRT) { 441 /* 442 * some ATAPI drives rejects pio settings. 443 * all we can do here is fall back to PIO 0 444 */ 445 drvp->drive_flags &= ~DRIVE_MODE; 446 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 447 drvp->PIO_mode = 0; 448 drvp->DMA_mode = 0; 449 printf("%s:%d:%d: pio setting rejected, " 450 "falling back to PIO mode 0\n", 451 wdc->sc_dev.dv_xname, 452 chp->ch_channel, xfer->c_drive); 453 wdc->set_modes(chp); 454 goto ready; 455 } 456 goto error; 457 } 458 if (drvp->drive_flags & DRIVE_UDMA) { 459 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 460 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 461 } else if (drvp->drive_flags & DRIVE_DMA) { 462 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 463 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 464 } else { 465 goto ready; 466 } 467 errstring = "dmamode"; 468 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 469 goto timeout; 470 if (chp->ch_status & WDCS_ERR) 471 goto error; 472 ready: 473 drvp->state = READY; 474 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 475 WDCTL_4BIT); 476 } 477 /* start timeout machinery */ 478 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 479 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 480 wdctimeout, chp); 481 482 if (wdc->cap & WDC_CAPABILITY_SELECT) 483 wdc->select(chp, xfer->c_drive); 484 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 485 WDSD_IBM | (xfer->c_drive << 4)); 486 switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) { 487 case WDCWAIT_OK: 488 break; 489 case WDCWAIT_TOUT: 490 printf("wdc_atapi_start: not ready, st = %02x\n", 491 chp->ch_status); 492 sc_xfer->error = XS_TIMEOUT; 493 wdc_atapi_reset(chp, xfer); 494 return; 495 case WDCWAIT_THR: 496 return; 497 } 498 499 /* 500 * Even with WDCS_ERR, the device should accept a command packet 501 * Limit length to what can be stuffed into the cylinder register 502 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 503 * but not all devices do that and it's not obvious from the 504 * ATAPI spec that that behaviour should be expected. If more 505 * data is necessary, multiple data transfer phases will be done. 506 */ 507 508 wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD, 509 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 510 0, 0, 0, 511 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 512 513 /* 514 * If there is no interrupt for CMD input, busy-wait for it (done in 515 * the interrupt routine. If it is a polled command, call the interrupt 516 * routine until command is done. 517 */ 518 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 519 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 520 /* Wait for at last 400ns for status bit to be valid */ 521 DELAY(1); 522 if (chp->ch_flags & WDCF_DMA_WAIT) { 523 wdc_dmawait(chp, xfer, sc_xfer->timeout); 524 chp->ch_flags &= ~WDCF_DMA_WAIT; 525 } 526 wdc_atapi_intr(chp, xfer, 0); 527 } else { 528 chp->ch_flags |= WDCF_IRQ_WAIT; 529 } 530 if (sc_xfer->xs_control & XS_CTL_POLL) { 531 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 532 /* Wait for at last 400ns for status bit to be valid */ 533 DELAY(1); 534 wdc_atapi_intr(chp, xfer, 0); 535 } 536 } 537 return; 538 timeout: 539 printf("%s:%d:%d: %s timed out\n", 540 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 541 errstring); 542 sc_xfer->error = XS_TIMEOUT; 543 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 544 wdc_atapi_reset(chp, xfer); 545 return; 546 error: 547 printf("%s:%d:%d: %s ", 548 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 549 errstring); 550 printf("error (0x%x)\n", chp->ch_error); 551 sc_xfer->error = XS_SHORTSENSE; 552 sc_xfer->sense.atapi_sense = chp->ch_error; 553 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 554 wdc_atapi_reset(chp, xfer); 555 return; 556 } 557 558 static int 559 wdc_atapi_intr(struct wdc_channel *chp, struct ata_xfer *xfer, int irq) 560 { 561 struct wdc_softc *wdc = chp->ch_wdc; 562 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 563 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 564 int len, phase, i, retries=0; 565 int ire; 566 int dma_flags = 0; 567 void *cmd; 568 569 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 570 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 571 DEBUG_INTR); 572 573 /* Is it not a transfer, but a control operation? */ 574 if (drvp->state < READY) { 575 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 576 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 577 drvp->state); 578 panic("wdc_atapi_intr: bad state"); 579 } 580 /* 581 * If we missed an interrupt in a PIO transfer, reset and restart. 582 * Don't try to continue transfer, we may have missed cycles. 583 */ 584 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 585 sc_xfer->error = XS_TIMEOUT; 586 wdc_atapi_reset(chp, xfer); 587 return 1; 588 } 589 590 /* Ack interrupt done in wdc_wait_for_unbusy */ 591 if (wdc->cap & WDC_CAPABILITY_SELECT) 592 wdc->select(chp, xfer->c_drive); 593 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 594 WDSD_IBM | (xfer->c_drive << 4)); 595 if (wdc_wait_for_unbusy(chp, 596 (irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) { 597 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 598 return 0; /* IRQ was not for us */ 599 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 600 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 601 xfer->c_bcount, xfer->c_skip); 602 if (xfer->c_flags & C_DMA) { 603 ata_dmaerr(drvp, 604 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 605 } 606 sc_xfer->error = XS_TIMEOUT; 607 wdc_atapi_reset(chp, xfer); 608 return 1; 609 } 610 if (wdc->cap & WDC_CAPABILITY_IRQACK) 611 wdc->irqack(chp); 612 613 /* 614 * If we missed an IRQ and were using DMA, flag it as a DMA error 615 * and reset device. 616 */ 617 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 618 ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); 619 sc_xfer->error = XS_RESET; 620 wdc_atapi_reset(chp, xfer); 621 return (1); 622 } 623 /* 624 * if the request sense command was aborted, report the short sense 625 * previously recorded, else continue normal processing 626 */ 627 628 if (xfer->c_flags & C_DMA) 629 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 630 ? WDC_DMA_READ : 0; 631 again: 632 len = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_lo], 0) + 633 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_hi], 0); 634 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_ireason], 0); 635 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 636 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 637 "ire 0x%x :", xfer->c_bcount, 638 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 639 640 switch (phase) { 641 case PHASE_CMDOUT: 642 cmd = sc_xfer->cmd; 643 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 644 /* Init the DMA channel if necessary */ 645 if (xfer->c_flags & C_DMA) { 646 if ((*wdc->dma_init)(wdc->dma_arg, 647 chp->ch_channel, xfer->c_drive, 648 xfer->c_databuf, xfer->c_bcount, dma_flags) != 0) { 649 sc_xfer->error = XS_DRIVER_STUFFUP; 650 break; 651 } 652 } 653 /* send packet command */ 654 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 655 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 656 if (drvp->drive_flags & DRIVE_CAP32) 657 bus_space_write_multi_4(chp->data32iot, 658 chp->data32ioh, 0, (u_int32_t *)cmd, 659 sc_xfer->cmdlen >> 2); 660 else 661 bus_space_write_multi_2(chp->cmd_iot, 662 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 663 sc_xfer->cmdlen >> 1); 664 } else { 665 if (drvp->drive_flags & DRIVE_CAP32) 666 bus_space_write_multi_stream_4(chp->data32iot, 667 chp->data32ioh, 0, (u_int32_t *)cmd, 668 sc_xfer->cmdlen >> 2); 669 else 670 bus_space_write_multi_stream_2(chp->cmd_iot, 671 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 672 sc_xfer->cmdlen >> 1); 673 } 674 /* Start the DMA channel if necessary */ 675 if (xfer->c_flags & C_DMA) { 676 (*wdc->dma_start)(wdc->dma_arg, 677 chp->ch_channel, xfer->c_drive); 678 chp->ch_flags |= WDCF_DMA_WAIT; 679 } 680 681 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 682 chp->ch_flags |= WDCF_IRQ_WAIT; 683 } 684 return 1; 685 686 case PHASE_DATAOUT: 687 /* write data */ 688 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 689 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 690 (xfer->c_flags & C_DMA) != 0) { 691 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 692 if (xfer->c_flags & C_DMA) { 693 ata_dmaerr(drvp, 694 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 695 } 696 sc_xfer->error = XS_TIMEOUT; 697 wdc_atapi_reset(chp, xfer); 698 return 1; 699 } 700 if (xfer->c_bcount < len) { 701 printf("wdc_atapi_intr: warning: write only " 702 "%d of %d requested bytes\n", xfer->c_bcount, len); 703 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 704 bus_space_write_multi_2(chp->cmd_iot, 705 chp->cmd_iohs[wd_data], 0, 706 (u_int16_t *)((char *)xfer->c_databuf + 707 xfer->c_skip), 708 xfer->c_bcount >> 1); 709 } else { 710 bus_space_write_multi_stream_2(chp->cmd_iot, 711 chp->cmd_iohs[wd_data], 0, 712 (u_int16_t *)((char *)xfer->c_databuf + 713 xfer->c_skip), 714 xfer->c_bcount >> 1); 715 } 716 for (i = xfer->c_bcount; i < len; i += 2) 717 bus_space_write_2(chp->cmd_iot, 718 chp->cmd_iohs[wd_data], 0, 0); 719 xfer->c_skip += xfer->c_bcount; 720 xfer->c_bcount = 0; 721 } else { 722 if (drvp->drive_flags & DRIVE_CAP32) { 723 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 724 bus_space_write_multi_4(chp->data32iot, 725 chp->data32ioh, 0, 726 (u_int32_t *)((char *)xfer->c_databuf + 727 xfer->c_skip), 728 len >> 2); 729 else 730 bus_space_write_multi_stream_4(chp->data32iot, 731 chp->data32ioh, wd_data, 732 (u_int32_t *)((char *)xfer->c_databuf + 733 xfer->c_skip), 734 len >> 2); 735 736 xfer->c_skip += len & 0xfffffffc; 737 xfer->c_bcount -= len & 0xfffffffc; 738 len = len & 0x03; 739 } 740 if (len > 0) { 741 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 742 bus_space_write_multi_2(chp->cmd_iot, 743 chp->cmd_iohs[wd_data], 0, 744 (u_int16_t *)((char *)xfer->c_databuf + 745 xfer->c_skip), 746 len >> 1); 747 else 748 bus_space_write_multi_stream_2(chp->cmd_iot, 749 chp->cmd_iohs[wd_data], 0, 750 (u_int16_t *)((char *)xfer->c_databuf + 751 xfer->c_skip), 752 len >> 1); 753 xfer->c_skip += len; 754 xfer->c_bcount -= len; 755 } 756 } 757 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 758 chp->ch_flags |= WDCF_IRQ_WAIT; 759 } 760 return 1; 761 762 case PHASE_DATAIN: 763 /* Read data */ 764 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 765 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 766 (xfer->c_flags & C_DMA) != 0) { 767 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 768 if (xfer->c_flags & C_DMA) { 769 ata_dmaerr(drvp, 770 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 771 } 772 sc_xfer->error = XS_TIMEOUT; 773 wdc_atapi_reset(chp, xfer); 774 return 1; 775 } 776 if (xfer->c_bcount < len) { 777 printf("wdc_atapi_intr: warning: reading only " 778 "%d of %d bytes\n", xfer->c_bcount, len); 779 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 780 bus_space_read_multi_2(chp->cmd_iot, 781 chp->cmd_iohs[wd_data], 0, 782 (u_int16_t *)((char *)xfer->c_databuf + 783 xfer->c_skip), 784 xfer->c_bcount >> 1); 785 } else { 786 bus_space_read_multi_stream_2(chp->cmd_iot, 787 chp->cmd_iohs[wd_data], 0, 788 (u_int16_t *)((char *)xfer->c_databuf + 789 xfer->c_skip), 790 xfer->c_bcount >> 1); 791 } 792 wdcbit_bucket(chp, len - xfer->c_bcount); 793 xfer->c_skip += xfer->c_bcount; 794 xfer->c_bcount = 0; 795 } else { 796 if (drvp->drive_flags & DRIVE_CAP32) { 797 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 798 bus_space_read_multi_4(chp->data32iot, 799 chp->data32ioh, 0, 800 (u_int32_t *)((char *)xfer->c_databuf + 801 xfer->c_skip), 802 len >> 2); 803 else 804 bus_space_read_multi_stream_4(chp->data32iot, 805 chp->data32ioh, wd_data, 806 (u_int32_t *)((char *)xfer->c_databuf + 807 xfer->c_skip), 808 len >> 2); 809 810 xfer->c_skip += len & 0xfffffffc; 811 xfer->c_bcount -= len & 0xfffffffc; 812 len = len & 0x03; 813 } 814 if (len > 0) { 815 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 816 bus_space_read_multi_2(chp->cmd_iot, 817 chp->cmd_iohs[wd_data], 0, 818 (u_int16_t *)((char *)xfer->c_databuf + 819 xfer->c_skip), 820 len >> 1); 821 else 822 bus_space_read_multi_stream_2(chp->cmd_iot, 823 chp->cmd_iohs[wd_data], 0, 824 (u_int16_t *)((char *)xfer->c_databuf + 825 xfer->c_skip), 826 len >> 1); 827 xfer->c_skip += len; 828 xfer->c_bcount -=len; 829 } 830 } 831 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 832 chp->ch_flags |= WDCF_IRQ_WAIT; 833 } 834 return 1; 835 836 case PHASE_ABORTED: 837 case PHASE_COMPLETED: 838 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 839 if (xfer->c_flags & C_DMA) { 840 xfer->c_bcount -= sc_xfer->datalen; 841 } 842 sc_xfer->resid = xfer->c_bcount; 843 wdc_atapi_phase_complete(xfer); 844 return(1); 845 846 default: 847 if (++retries<500) { 848 DELAY(100); 849 chp->ch_status = bus_space_read_1(chp->cmd_iot, 850 chp->cmd_iohs[wd_status], 0); 851 chp->ch_error = bus_space_read_1(chp->cmd_iot, 852 chp->cmd_iohs[wd_error], 0); 853 goto again; 854 } 855 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 856 if (chp->ch_status & WDCS_ERR) { 857 sc_xfer->error = XS_SHORTSENSE; 858 sc_xfer->sense.atapi_sense = chp->ch_error; 859 } else { 860 if (xfer->c_flags & C_DMA) { 861 ata_dmaerr(drvp, 862 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 863 } 864 sc_xfer->error = XS_RESET; 865 wdc_atapi_reset(chp, xfer); 866 return (1); 867 } 868 } 869 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 870 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 871 DEBUG_INTR); 872 wdc_atapi_done(chp, xfer); 873 return (1); 874 } 875 876 static void 877 wdc_atapi_phase_complete(struct ata_xfer *xfer) 878 { 879 struct wdc_channel *chp = xfer->c_chp; 880 struct wdc_softc *wdc = chp->ch_wdc; 881 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 882 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 883 884 /* wait for DSC if needed */ 885 if (drvp->drive_flags & DRIVE_ATAPIST) { 886 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 887 "polldsc %d\n", wdc->sc_dev.dv_xname, chp->ch_channel, 888 xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS); 889 #if 1 890 if (cold) 891 panic("wdc_atapi_phase_complete: cold"); 892 #endif 893 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10, 894 AT_POLL) == WDCWAIT_TOUT) { 895 /* 10ms not enough, try again in 1 tick */ 896 if (xfer->c_dscpoll++ > 897 mstohz(sc_xfer->timeout)) { 898 printf("%s:%d:%d: wait_for_dsc " 899 "failed\n", 900 wdc->sc_dev.dv_xname, 901 chp->ch_channel, xfer->c_drive); 902 sc_xfer->error = XS_TIMEOUT; 903 wdc_atapi_reset(chp, xfer); 904 return; 905 } else 906 callout_reset(&chp->ch_callout, 1, 907 wdc_atapi_polldsc, xfer); 908 return; 909 } 910 } 911 912 /* 913 * Some drive occasionally set WDCS_ERR with 914 * "ATA illegal length indication" in the error 915 * register. If we read some data the sense is valid 916 * anyway, so don't report the error. 917 */ 918 if (chp->ch_status & WDCS_ERR && 919 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 920 sc_xfer->resid == sc_xfer->datalen)) { 921 /* save the short sense */ 922 sc_xfer->error = XS_SHORTSENSE; 923 sc_xfer->sense.atapi_sense = chp->ch_error; 924 if ((sc_xfer->xs_periph->periph_quirks & 925 PQUIRK_NOSENSE) == 0) { 926 /* ask scsipi to send a REQUEST_SENSE */ 927 sc_xfer->error = XS_BUSY; 928 sc_xfer->status = SCSI_CHECK; 929 } else if (wdc->dma_status & 930 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 931 ata_dmaerr(drvp, 932 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 933 sc_xfer->error = XS_RESET; 934 wdc_atapi_reset(chp, xfer); 935 return; 936 } 937 } 938 if (xfer->c_bcount != 0) { 939 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 940 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 941 } 942 #ifdef DIAGNOSTIC 943 if (xfer->c_bcount < 0) { 944 printf("wdc_atapi_intr warning: bcount value " 945 "is %d after io\n", xfer->c_bcount); 946 } 947 #endif 948 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 949 "error 0x%x sense 0x%x\n", sc_xfer->error, 950 sc_xfer->sense.atapi_sense), DEBUG_INTR); 951 wdc_atapi_done(chp, xfer); 952 } 953 954 static void 955 wdc_atapi_done(struct wdc_channel *chp, struct ata_xfer *xfer) 956 { 957 struct wdc_softc *wdc = chp->ch_wdc; 958 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 959 960 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 961 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 962 (u_int)xfer->c_flags), DEBUG_XFERS); 963 callout_stop(&chp->ch_callout); 964 /* remove this command from xfer queue */ 965 wdc_free_xfer(chp, xfer); 966 967 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 968 scsipi_done(sc_xfer); 969 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 970 chp->ch_flags), DEBUG_XFERS); 971 wdcstart(chp); 972 } 973 974 static void 975 wdc_atapi_reset(struct wdc_channel *chp, struct ata_xfer *xfer) 976 { 977 struct wdc_softc *wdc = chp->ch_wdc; 978 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 979 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 980 981 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 982 drvp->state = 0; 983 if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) { 984 printf("%s:%d:%d: reset failed\n", 985 wdc->sc_dev.dv_xname, chp->ch_channel, 986 xfer->c_drive); 987 sc_xfer->error = XS_SELTIMEOUT; 988 } 989 wdc_atapi_done(chp, xfer); 990 return; 991 } 992 993 static void 994 wdc_atapi_polldsc(void *arg) 995 { 996 997 wdc_atapi_phase_complete(arg); 998 } 999
Indexes created Mon Sep 22 21:09:42 GMT 2025