atapi_wdc.c revision 1.88
1 /* $NetBSD: atapi_wdc.c,v 1.88 2004/08/20 06:39:39 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 1.88 2004/08/20 06:39:39 thorpej Exp $"); 34 35 #ifndef ATADEBUG 36 #define ATADEBUG 37 #endif /* ATADEBUG */ 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 ATADEBUG 74 int wdcdebug_atapi_mask = 0; 75 #define ATADEBUG_PRINT(args, level) \ 76 if (wdcdebug_atapi_mask & (level)) \ 77 printf args 78 #else 79 #define ATADEBUG_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 ata_channel *,struct ata_xfer *); 90 static int wdc_atapi_intr(struct ata_channel *, struct ata_xfer *, int); 91 static void wdc_atapi_kill_xfer(struct ata_channel *, 92 struct ata_xfer *, int); 93 static void wdc_atapi_phase_complete(struct ata_xfer *); 94 static void wdc_atapi_done(struct ata_channel *, struct ata_xfer *); 95 static void wdc_atapi_reset(struct ata_channel *, struct ata_xfer *); 96 static void wdc_atapi_scsipi_request(struct scsipi_channel *, 97 scsipi_adapter_req_t, void *); 98 static void wdc_atapi_kill_pending(struct scsipi_periph *); 99 static void wdc_atapi_polldsc(void *arg); 100 101 #define MAX_SIZE MAXPHYS 102 103 static const struct scsipi_bustype wdc_atapi_bustype = { 104 SCSIPI_BUSTYPE_ATAPI, 105 atapi_scsipi_cmd, 106 atapi_interpret_sense, 107 atapi_print_addr, 108 wdc_atapi_kill_pending, 109 }; 110 111 void 112 wdc_atapibus_attach(struct atabus_softc *ata_sc) 113 { 114 struct ata_channel *chp = ata_sc->sc_chan; 115 struct atac_softc *atac = chp->ch_atac; 116 struct scsipi_adapter *adapt = &atac->atac_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 = &atac->atac_dev; 123 adapt->adapt_nchannels = atac->atac_nchannels; 124 adapt->adapt_request = wdc_atapi_scsipi_request; 125 adapt->adapt_minphys = wdc_atapi_minphys; 126 if (atac->atac_cap & ATAC_CAP_NOIRQ) 127 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 128 atac->atac_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->ch_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 static void 147 wdc_atapi_minphys(struct buf *bp) 148 { 149 150 if (bp->b_bcount > MAX_SIZE) 151 bp->b_bcount = MAX_SIZE; 152 minphys(bp); 153 } 154 155 /* 156 * Kill off all pending xfers for a periph. 157 * 158 * Must be called at splbio(). 159 */ 160 static void 161 wdc_atapi_kill_pending(struct scsipi_periph *periph) 162 { 163 struct atac_softc *atac = 164 (void *)periph->periph_channel->chan_adapter->adapt_dev; 165 struct ata_channel *chp = 166 atac->atac_channels[periph->periph_channel->chan_channel]; 167 168 ata_kill_pending(&chp->ch_drive[periph->periph_target]); 169 } 170 171 static void 172 wdc_atapi_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason) 173 { 174 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 175 176 /* remove this command from xfer queue */ 177 switch (reason) { 178 case KILL_GONE: 179 sc_xfer->error = XS_DRIVER_STUFFUP; 180 break; 181 case KILL_RESET: 182 sc_xfer->error = XS_RESET; 183 break; 184 default: 185 printf("wdc_ata_bio_kill_xfer: unknown reason %d\n", 186 reason); 187 panic("wdc_ata_bio_kill_xfer"); 188 } 189 ata_free_xfer(chp, xfer); 190 scsipi_done(sc_xfer); 191 } 192 193 static int 194 wdc_atapi_get_params(struct scsipi_channel *chan, int drive, 195 struct ataparams *id) 196 { 197 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 198 struct atac_softc *atac = &wdc->sc_atac; 199 struct wdc_regs *wdr = &wdc->regs[chan->chan_channel]; 200 struct ata_channel *chp = atac->atac_channels[chan->chan_channel]; 201 struct ata_command ata_c; 202 203 /* if no ATAPI device detected at wdc attach time, skip */ 204 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 205 ATADEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 206 drive), DEBUG_PROBE); 207 return -1; 208 } 209 210 memset(&ata_c, 0, sizeof(struct ata_command)); 211 ata_c.r_command = ATAPI_SOFT_RESET; 212 ata_c.r_st_bmask = 0; 213 ata_c.r_st_pmask = 0; 214 ata_c.flags = AT_WAIT | AT_POLL; 215 ata_c.timeout = WDC_RESET_WAIT; 216 if (wdc_exec_command(&chp->ch_drive[drive], &ata_c) != ATACMD_COMPLETE) { 217 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 218 " drive %s:%d:%d: driver failed\n", 219 atac->atac_dev.dv_xname, chp->ch_channel, drive); 220 panic("wdc_atapi_get_params"); 221 } 222 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 223 ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 224 "failed for drive %s:%d:%d: error 0x%x\n", 225 atac->atac_dev.dv_xname, chp->ch_channel, drive, 226 ata_c.r_error), DEBUG_PROBE); 227 return -1; 228 } 229 chp->ch_drive[drive].state = 0; 230 231 bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_status], 0); 232 233 /* Some ATAPI devices need a bit more time after software reset. */ 234 delay(5000); 235 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 236 ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 237 "failed for drive %s:%d:%d: error 0x%x\n", 238 atac->atac_dev.dv_xname, chp->ch_channel, drive, 239 ata_c.r_error), DEBUG_PROBE); 240 return -1; 241 } 242 return 0; 243 } 244 245 static void 246 wdc_atapi_probe_device(struct atapibus_softc *sc, int target) 247 { 248 struct scsipi_channel *chan = sc->sc_channel; 249 struct scsipi_periph *periph; 250 struct ataparams ids; 251 struct ataparams *id = &ids; 252 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 253 struct atac_softc *atac = &wdc->sc_atac; 254 struct ata_channel *chp = atac->atac_channels[chan->chan_channel]; 255 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 256 struct scsipibus_attach_args sa; 257 char serial_number[21], model[41], firmware_revision[9]; 258 259 /* skip if already attached */ 260 if (scsipi_lookup_periph(chan, target, 0) != NULL) 261 return; 262 263 if (wdc_atapi_get_params(chan, target, id) == 0) { 264 #ifdef ATAPI_DEBUG_PROBE 265 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 266 sc->sc_dev.dv_xname, target, 267 id->atap_config & ATAPI_CFG_CMD_MASK, 268 id->atap_config & ATAPI_CFG_DRQ_MASK); 269 #endif 270 periph = scsipi_alloc_periph(M_NOWAIT); 271 if (periph == NULL) { 272 printf("%s: unable to allocate periph for drive %d\n", 273 sc->sc_dev.dv_xname, target); 274 return; 275 } 276 periph->periph_dev = NULL; 277 periph->periph_channel = chan; 278 periph->periph_switch = &atapi_probe_periphsw; 279 periph->periph_target = target; 280 periph->periph_lun = 0; 281 periph->periph_quirks = PQUIRK_ONLYBIG; 282 283 #ifdef SCSIPI_DEBUG 284 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 285 SCSIPI_DEBUG_TARGET == target) 286 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 287 #endif 288 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 289 if (id->atap_config & ATAPI_CFG_REMOV) 290 periph->periph_flags |= PERIPH_REMOVABLE; 291 if (periph->periph_type == T_SEQUENTIAL) 292 drvp->drive_flags |= DRIVE_ATAPIST; 293 294 sa.sa_periph = periph; 295 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 296 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 297 T_REMOV : T_FIXED; 298 scsipi_strvis(model, 40, id->atap_model, 40); 299 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 300 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 301 sa.sa_inqbuf.vendor = model; 302 sa.sa_inqbuf.product = serial_number; 303 sa.sa_inqbuf.revision = firmware_revision; 304 305 /* 306 * Determine the operating mode capabilities of the device. 307 */ 308 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 309 periph->periph_cap |= PERIPH_CAP_CMD16; 310 /* XXX This is gross. */ 311 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 312 313 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 314 315 if (drvp->drv_softc) 316 ata_probe_caps(drvp); 317 else 318 drvp->drive_flags &= ~DRIVE_ATAPI; 319 } else { 320 drvp->drive_flags &= ~DRIVE_ATAPI; 321 } 322 } 323 324 static void 325 wdc_atapi_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 326 void *arg) 327 { 328 struct scsipi_adapter *adapt = chan->chan_adapter; 329 struct scsipi_periph *periph; 330 struct scsipi_xfer *sc_xfer; 331 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 332 struct atac_softc *atac = &wdc->sc_atac; 333 struct ata_xfer *xfer; 334 int channel = chan->chan_channel; 335 int drive, s; 336 337 switch (req) { 338 case ADAPTER_REQ_RUN_XFER: 339 sc_xfer = arg; 340 periph = sc_xfer->xs_periph; 341 drive = periph->periph_target; 342 343 ATADEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 344 atac->atac_dev.dv_xname, channel, drive), DEBUG_XFERS); 345 if ((atac->atac_dev.dv_flags & DVF_ACTIVE) == 0) { 346 sc_xfer->error = XS_DRIVER_STUFFUP; 347 scsipi_done(sc_xfer); 348 return; 349 } 350 351 xfer = ata_get_xfer(ATAXF_NOSLEEP); 352 if (xfer == NULL) { 353 sc_xfer->error = XS_RESOURCE_SHORTAGE; 354 scsipi_done(sc_xfer); 355 return; 356 } 357 358 if (sc_xfer->xs_control & XS_CTL_POLL) 359 xfer->c_flags |= C_POLL; 360 if ((atac->atac_channels[channel]->ch_drive[drive].drive_flags & 361 (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) 362 xfer->c_flags |= C_DMA; 363 xfer->c_drive = drive; 364 xfer->c_flags |= C_ATAPI; 365 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 366 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 367 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 368 /* 369 * DVD authentication commands must always be done in 370 * PIO mode. 371 */ 372 xfer->c_flags &= ~C_DMA; 373 } 374 /* 375 * DMA can't deal with transfers which are not a multiple of 376 * 2 bytes. It's a bug to request such transfers for ATAPI 377 * but as the request can come from userland, we have to 378 * protect against it. 379 * Also some devices seems to not handle DMA xfers of less than 380 * 4 bytes. 381 */ 382 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 383 xfer->c_flags &= ~C_DMA; 384 385 xfer->c_cmd = sc_xfer; 386 xfer->c_databuf = sc_xfer->data; 387 xfer->c_bcount = sc_xfer->datalen; 388 xfer->c_start = wdc_atapi_start; 389 xfer->c_intr = wdc_atapi_intr; 390 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 391 xfer->c_dscpoll = 0; 392 s = splbio(); 393 ata_exec_xfer(atac->atac_channels[channel], xfer); 394 #ifdef DIAGNOSTIC 395 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 396 (sc_xfer->xs_status & XS_STS_DONE) == 0) 397 panic("wdc_atapi_scsipi_request: polled command " 398 "not done"); 399 #endif 400 splx(s); 401 return; 402 403 default: 404 /* Not supported, nothing to do. */ 405 ; 406 } 407 } 408 409 static void 410 wdc_atapi_start(struct ata_channel *chp, struct ata_xfer *xfer) 411 { 412 struct atac_softc *atac = chp->ch_atac; 413 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 414 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 415 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 416 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 417 int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0; 418 char *errstring; 419 420 ATADEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 421 atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive, 422 sc_xfer->xs_control), DEBUG_XFERS); 423 if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER)) 424 drvp->n_xfers++; 425 /* Do control operations specially. */ 426 if (__predict_false(drvp->state < READY)) { 427 /* If it's not a polled command, we need the kenrel thread */ 428 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 && 429 (chp->ch_flags & ATACH_TH_RUN) == 0) { 430 chp->ch_queue->queue_freeze++; 431 wakeup(&chp->ch_thread); 432 return; 433 } 434 /* 435 * disable interrupts, all commands here should be quick 436 * enouth to be able to poll, and we don't go here that often 437 */ 438 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 439 WDCTL_4BIT | WDCTL_IDS); 440 if (wdc->select) 441 wdc->select(chp, xfer->c_drive); 442 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 443 WDSD_IBM | (xfer->c_drive << 4)); 444 /* Don't try to set mode if controller can't be adjusted */ 445 if (atac->atac_set_modes == NULL) 446 goto ready; 447 /* Also don't try if the drive didn't report its mode */ 448 if ((drvp->drive_flags & DRIVE_MODE) == 0) 449 goto ready; 450 errstring = "unbusy"; 451 if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags)) 452 goto timeout; 453 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 454 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 455 errstring = "piomode"; 456 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 457 goto timeout; 458 if (chp->ch_status & WDCS_ERR) { 459 if (chp->ch_error == WDCE_ABRT) { 460 /* 461 * Some ATAPI drives reject PIO settings. 462 * Fall back to PIO mode 3 since that's the 463 * minimum for ATAPI. 464 */ 465 printf("%s:%d:%d: PIO mode %d rejected, " 466 "falling back to PIO mode 3\n", 467 atac->atac_dev.dv_xname, 468 chp->ch_channel, xfer->c_drive, 469 drvp->PIO_mode); 470 if (drvp->PIO_mode > 3) 471 drvp->PIO_mode = 3; 472 } else 473 goto error; 474 } 475 if (drvp->drive_flags & DRIVE_UDMA) { 476 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 477 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 478 } else if (drvp->drive_flags & DRIVE_DMA) { 479 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 480 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 481 } else { 482 goto ready; 483 } 484 errstring = "dmamode"; 485 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 486 goto timeout; 487 if (chp->ch_status & WDCS_ERR) { 488 if (chp->ch_error == WDCE_ABRT) { 489 if (drvp->drive_flags & DRIVE_UDMA) 490 goto error; 491 else { 492 /* 493 * The drive rejected our DMA setting. 494 * Fall back to mode 1. 495 */ 496 printf("%s:%d:%d: DMA mode %d rejected, " 497 "falling back to DMA mode 0\n", 498 atac->atac_dev.dv_xname, 499 chp->ch_channel, xfer->c_drive, 500 drvp->DMA_mode); 501 if (drvp->DMA_mode > 0) 502 drvp->DMA_mode = 0; 503 } 504 } else 505 goto error; 506 } 507 ready: 508 drvp->state = READY; 509 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 510 WDCTL_4BIT); 511 delay(10); /* some drives need a little delay here */ 512 } 513 /* start timeout machinery */ 514 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 515 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 516 wdctimeout, chp); 517 518 if (wdc->select) 519 wdc->select(chp, xfer->c_drive); 520 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 521 WDSD_IBM | (xfer->c_drive << 4)); 522 switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) { 523 case WDCWAIT_OK: 524 break; 525 case WDCWAIT_TOUT: 526 printf("wdc_atapi_start: not ready, st = %02x\n", 527 chp->ch_status); 528 sc_xfer->error = XS_TIMEOUT; 529 wdc_atapi_reset(chp, xfer); 530 return; 531 case WDCWAIT_THR: 532 return; 533 } 534 535 /* 536 * Even with WDCS_ERR, the device should accept a command packet 537 * Limit length to what can be stuffed into the cylinder register 538 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 539 * but not all devices do that and it's not obvious from the 540 * ATAPI spec that that behaviour should be expected. If more 541 * data is necessary, multiple data transfer phases will be done. 542 */ 543 544 wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD, 545 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 546 0, 0, 0, 547 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 548 549 /* 550 * If there is no interrupt for CMD input, busy-wait for it (done in 551 * the interrupt routine. If it is a polled command, call the interrupt 552 * routine until command is done. 553 */ 554 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 555 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 556 /* Wait for at last 400ns for status bit to be valid */ 557 DELAY(1); 558 wdc_atapi_intr(chp, xfer, 0); 559 } else { 560 chp->ch_flags |= ATACH_IRQ_WAIT; 561 } 562 if (sc_xfer->xs_control & XS_CTL_POLL) { 563 if (chp->ch_flags & ATACH_DMA_WAIT) { 564 wdc_dmawait(chp, xfer, sc_xfer->timeout); 565 chp->ch_flags &= ~ATACH_DMA_WAIT; 566 } 567 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 568 /* Wait for at last 400ns for status bit to be valid */ 569 DELAY(1); 570 wdc_atapi_intr(chp, xfer, 0); 571 } 572 } 573 return; 574 timeout: 575 printf("%s:%d:%d: %s timed out\n", 576 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 577 errstring); 578 sc_xfer->error = XS_TIMEOUT; 579 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 580 delay(10); /* some drives need a little delay here */ 581 wdc_atapi_reset(chp, xfer); 582 return; 583 error: 584 printf("%s:%d:%d: %s ", 585 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 586 errstring); 587 printf("error (0x%x)\n", chp->ch_error); 588 sc_xfer->error = XS_SHORTSENSE; 589 sc_xfer->sense.atapi_sense = chp->ch_error; 590 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 591 delay(10); /* some drives need a little delay here */ 592 wdc_atapi_reset(chp, xfer); 593 return; 594 } 595 596 static int 597 wdc_atapi_intr(struct ata_channel *chp, struct ata_xfer *xfer, int irq) 598 { 599 struct atac_softc *atac = chp->ch_atac; 600 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 601 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 602 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 603 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 604 int len, phase, i, retries=0; 605 int ire; 606 int dma_flags = 0; 607 void *cmd; 608 609 ATADEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 610 atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive), 611 DEBUG_INTR); 612 613 /* Is it not a transfer, but a control operation? */ 614 if (drvp->state < READY) { 615 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 616 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 617 drvp->state); 618 panic("wdc_atapi_intr: bad state"); 619 } 620 /* 621 * If we missed an interrupt in a PIO transfer, reset and restart. 622 * Don't try to continue transfer, we may have missed cycles. 623 */ 624 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 625 sc_xfer->error = XS_TIMEOUT; 626 wdc_atapi_reset(chp, xfer); 627 return 1; 628 } 629 630 /* Ack interrupt done in wdc_wait_for_unbusy */ 631 if (wdc->select) 632 wdc->select(chp, xfer->c_drive); 633 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 634 WDSD_IBM | (xfer->c_drive << 4)); 635 if (wdc_wait_for_unbusy(chp, 636 (irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) { 637 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 638 return 0; /* IRQ was not for us */ 639 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 640 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 641 xfer->c_bcount, xfer->c_skip); 642 if (xfer->c_flags & C_DMA) { 643 ata_dmaerr(drvp, 644 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 645 } 646 sc_xfer->error = XS_TIMEOUT; 647 wdc_atapi_reset(chp, xfer); 648 return 1; 649 } 650 if (wdc->irqack) 651 wdc->irqack(chp); 652 653 /* 654 * If we missed an IRQ and were using DMA, flag it as a DMA error 655 * and reset device. 656 */ 657 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 658 ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); 659 sc_xfer->error = XS_RESET; 660 wdc_atapi_reset(chp, xfer); 661 return (1); 662 } 663 /* 664 * if the request sense command was aborted, report the short sense 665 * previously recorded, else continue normal processing 666 */ 667 668 if (xfer->c_flags & C_DMA) 669 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 670 ? WDC_DMA_READ : 0; 671 again: 672 len = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_lo], 0) + 673 256 * bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_hi], 0); 674 ire = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_ireason], 0); 675 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 676 ATADEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 677 "ire 0x%x :", xfer->c_bcount, 678 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 679 680 switch (phase) { 681 case PHASE_CMDOUT: 682 cmd = sc_xfer->cmd; 683 ATADEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 684 /* Init the DMA channel if necessary */ 685 if (xfer->c_flags & C_DMA) { 686 if ((*wdc->dma_init)(wdc->dma_arg, 687 chp->ch_channel, xfer->c_drive, 688 xfer->c_databuf, xfer->c_bcount, dma_flags) != 0) { 689 sc_xfer->error = XS_DRIVER_STUFFUP; 690 break; 691 } 692 } 693 694 /* send packet command */ 695 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 696 wdc->dataout_pio(chp, drvp->drive_flags, cmd, sc_xfer->cmdlen); 697 698 /* Start the DMA channel if necessary */ 699 if (xfer->c_flags & C_DMA) { 700 (*wdc->dma_start)(wdc->dma_arg, 701 chp->ch_channel, xfer->c_drive); 702 chp->ch_flags |= ATACH_DMA_WAIT; 703 } 704 705 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 706 chp->ch_flags |= ATACH_IRQ_WAIT; 707 } 708 return 1; 709 710 case PHASE_DATAOUT: 711 /* write data */ 712 ATADEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 713 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 714 (xfer->c_flags & C_DMA) != 0) { 715 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 716 if (xfer->c_flags & C_DMA) { 717 ata_dmaerr(drvp, 718 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 719 } 720 sc_xfer->error = XS_TIMEOUT; 721 wdc_atapi_reset(chp, xfer); 722 return 1; 723 } 724 if (xfer->c_bcount < len) { 725 printf("wdc_atapi_intr: warning: write only " 726 "%d of %d requested bytes\n", xfer->c_bcount, len); 727 wdc->dataout_pio(chp, drvp->drive_flags, 728 (char *)xfer->c_databuf + xfer->c_skip, 729 xfer->c_bcount); 730 for (i = xfer->c_bcount; i < len; i += 2) 731 bus_space_write_2(wdr->cmd_iot, 732 wdr->cmd_iohs[wd_data], 0, 0); 733 xfer->c_skip += xfer->c_bcount; 734 xfer->c_bcount = 0; 735 } else { 736 wdc->dataout_pio(chp, drvp->drive_flags, 737 (char *)xfer->c_databuf + xfer->c_skip, len); 738 xfer->c_skip += len; 739 xfer->c_bcount -= len; 740 } 741 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 742 chp->ch_flags |= ATACH_IRQ_WAIT; 743 } 744 return 1; 745 746 case PHASE_DATAIN: 747 /* Read data */ 748 ATADEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 749 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 750 (xfer->c_flags & C_DMA) != 0) { 751 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 752 if (xfer->c_flags & C_DMA) { 753 ata_dmaerr(drvp, 754 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 755 } 756 sc_xfer->error = XS_TIMEOUT; 757 wdc_atapi_reset(chp, xfer); 758 return 1; 759 } 760 if (xfer->c_bcount < len) { 761 printf("wdc_atapi_intr: warning: reading only " 762 "%d of %d bytes\n", xfer->c_bcount, len); 763 wdc->datain_pio(chp, drvp->drive_flags, 764 (char *)xfer->c_databuf + xfer->c_skip, 765 xfer->c_bcount); 766 wdcbit_bucket(chp, len - xfer->c_bcount); 767 xfer->c_skip += xfer->c_bcount; 768 xfer->c_bcount = 0; 769 } else { 770 wdc->datain_pio(chp, drvp->drive_flags, 771 (char *)xfer->c_databuf + xfer->c_skip, len); 772 xfer->c_skip += len; 773 xfer->c_bcount -=len; 774 } 775 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 776 chp->ch_flags |= ATACH_IRQ_WAIT; 777 } 778 return 1; 779 780 case PHASE_ABORTED: 781 case PHASE_COMPLETED: 782 ATADEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 783 if (xfer->c_flags & C_DMA) { 784 xfer->c_bcount -= sc_xfer->datalen; 785 } 786 sc_xfer->resid = xfer->c_bcount; 787 wdc_atapi_phase_complete(xfer); 788 return(1); 789 790 default: 791 if (++retries<500) { 792 DELAY(100); 793 chp->ch_status = bus_space_read_1(wdr->cmd_iot, 794 wdr->cmd_iohs[wd_status], 0); 795 chp->ch_error = bus_space_read_1(wdr->cmd_iot, 796 wdr->cmd_iohs[wd_error], 0); 797 goto again; 798 } 799 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 800 if (chp->ch_status & WDCS_ERR) { 801 sc_xfer->error = XS_SHORTSENSE; 802 sc_xfer->sense.atapi_sense = chp->ch_error; 803 } else { 804 if (xfer->c_flags & C_DMA) { 805 ata_dmaerr(drvp, 806 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 807 } 808 sc_xfer->error = XS_RESET; 809 wdc_atapi_reset(chp, xfer); 810 return (1); 811 } 812 } 813 ATADEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 814 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 815 DEBUG_INTR); 816 wdc_atapi_done(chp, xfer); 817 return (1); 818 } 819 820 static void 821 wdc_atapi_phase_complete(struct ata_xfer *xfer) 822 { 823 struct ata_channel *chp = xfer->c_chp; 824 struct atac_softc *atac = chp->ch_atac; 825 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 826 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 827 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 828 829 /* wait for DSC if needed */ 830 if (drvp->drive_flags & DRIVE_ATAPIST) { 831 ATADEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 832 "polldsc %d\n", atac->atac_dev.dv_xname, chp->ch_channel, 833 xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS); 834 #if 1 835 if (cold) 836 panic("wdc_atapi_phase_complete: cold"); 837 #endif 838 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10, 839 AT_POLL) == WDCWAIT_TOUT) { 840 /* 10ms not enough, try again in 1 tick */ 841 if (xfer->c_dscpoll++ > 842 mstohz(sc_xfer->timeout)) { 843 printf("%s:%d:%d: wait_for_dsc " 844 "failed\n", 845 atac->atac_dev.dv_xname, 846 chp->ch_channel, xfer->c_drive); 847 sc_xfer->error = XS_TIMEOUT; 848 wdc_atapi_reset(chp, xfer); 849 return; 850 } else 851 callout_reset(&chp->ch_callout, 1, 852 wdc_atapi_polldsc, xfer); 853 return; 854 } 855 } 856 857 /* 858 * Some drive occasionally set WDCS_ERR with 859 * "ATA illegal length indication" in the error 860 * register. If we read some data the sense is valid 861 * anyway, so don't report the error. 862 */ 863 if (chp->ch_status & WDCS_ERR && 864 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 865 sc_xfer->resid == sc_xfer->datalen)) { 866 /* save the short sense */ 867 sc_xfer->error = XS_SHORTSENSE; 868 sc_xfer->sense.atapi_sense = chp->ch_error; 869 if ((sc_xfer->xs_periph->periph_quirks & 870 PQUIRK_NOSENSE) == 0) { 871 /* ask scsipi to send a REQUEST_SENSE */ 872 sc_xfer->error = XS_BUSY; 873 sc_xfer->status = SCSI_CHECK; 874 } else if (wdc->dma_status & 875 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 876 ata_dmaerr(drvp, 877 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 878 sc_xfer->error = XS_RESET; 879 wdc_atapi_reset(chp, xfer); 880 return; 881 } 882 } 883 if (xfer->c_bcount != 0) { 884 ATADEBUG_PRINT(("wdc_atapi_intr: bcount value is " 885 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 886 } 887 #ifdef DIAGNOSTIC 888 if (xfer->c_bcount < 0) { 889 printf("wdc_atapi_intr warning: bcount value " 890 "is %d after io\n", xfer->c_bcount); 891 } 892 #endif 893 ATADEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 894 "error 0x%x sense 0x%x\n", sc_xfer->error, 895 sc_xfer->sense.atapi_sense), DEBUG_INTR); 896 wdc_atapi_done(chp, xfer); 897 } 898 899 static void 900 wdc_atapi_done(struct ata_channel *chp, struct ata_xfer *xfer) 901 { 902 struct atac_softc *atac = chp->ch_atac; 903 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 904 int drive = xfer->c_drive; 905 906 ATADEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 907 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 908 (u_int)xfer->c_flags), DEBUG_XFERS); 909 callout_stop(&chp->ch_callout); 910 /* mark controller inactive and free the command */ 911 chp->ch_queue->active_xfer = NULL; 912 ata_free_xfer(chp, xfer); 913 914 if (chp->ch_drive[drive].drive_flags & DRIVE_WAITDRAIN) { 915 sc_xfer->error = XS_DRIVER_STUFFUP; 916 chp->ch_drive[drive].drive_flags &= ~DRIVE_WAITDRAIN; 917 wakeup(&chp->ch_queue->active_xfer); 918 } 919 920 ATADEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 921 scsipi_done(sc_xfer); 922 ATADEBUG_PRINT(("atastart from wdc_atapi_done, flags 0x%x\n", 923 chp->ch_flags), DEBUG_XFERS); 924 atastart(chp); 925 } 926 927 static void 928 wdc_atapi_reset(struct ata_channel *chp, struct ata_xfer *xfer) 929 { 930 struct atac_softc *atac = chp->ch_atac; 931 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 932 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 933 934 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 935 drvp->state = 0; 936 if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) { 937 printf("%s:%d:%d: reset failed\n", 938 atac->atac_dev.dv_xname, chp->ch_channel, 939 xfer->c_drive); 940 sc_xfer->error = XS_SELTIMEOUT; 941 } 942 wdc_atapi_done(chp, xfer); 943 return; 944 } 945 946 static void 947 wdc_atapi_polldsc(void *arg) 948 { 949 950 wdc_atapi_phase_complete(arg); 951 } 952
Indexes created Thu Sep 25 16:09:42 GMT 2025