atapi_wdc.c revision 1.71
1 /* $NetBSD: atapi_wdc.c,v 1.71 2004/07/31 21:26:43 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2001 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.71 2004/07/31 21:26:43 bouyer 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 *, 92 struct ata_xfer *, int); 93 static void wdc_atapi_phase_complete(struct ata_xfer *); 94 static void wdc_atapi_done(struct wdc_channel *, struct ata_xfer *); 95 static void wdc_atapi_reset(struct wdc_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 wdc_channel *chp = ata_sc->sc_chan; 115 struct wdc_softc *wdc = chp->ch_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->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 wdc_softc *wdc = 164 (void *)periph->periph_channel->chan_adapter->adapt_dev; 165 struct wdc_channel *chp = 166 wdc->channels[periph->periph_channel->chan_channel]; 167 168 wdc_kill_pending(chp); 169 } 170 171 static void 172 wdc_atapi_kill_xfer(struct wdc_channel *chp, struct ata_xfer *xfer, int reason) 173 { 174 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 175 176 callout_stop(&chp->ch_callout); 177 /* remove this command from xfer queue */ 178 wdc_free_xfer(chp, xfer); 179 switch (reason) { 180 case KILL_GONE: 181 sc_xfer->error = XS_DRIVER_STUFFUP; 182 scsipi_done(sc_xfer); 183 break; 184 case KILL_RESET: 185 sc_xfer->error = XS_RESET; 186 wdc_atapi_reset(chp, xfer); 187 break; 188 default: 189 printf("wdc_ata_bio_kill_xfer: unknown reason %d\n", 190 reason); 191 panic("wdc_ata_bio_kill_xfer"); 192 } 193 } 194 195 static int 196 wdc_atapi_get_params(struct scsipi_channel *chan, int drive, 197 struct ataparams *id) 198 { 199 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 200 struct wdc_channel *chp = wdc->channels[chan->chan_channel]; 201 struct wdc_command wdc_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 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 206 drive), DEBUG_PROBE); 207 return -1; 208 } 209 210 memset(&wdc_c, 0, sizeof(struct wdc_command)); 211 wdc_c.r_command = ATAPI_SOFT_RESET; 212 wdc_c.r_st_bmask = 0; 213 wdc_c.r_st_pmask = 0; 214 wdc_c.flags = AT_POLL; 215 wdc_c.timeout = WDC_RESET_WAIT; 216 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 217 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 218 " drive %s:%d:%d: driver failed\n", 219 wdc->sc_dev.dv_xname, chp->ch_channel, drive); 220 panic("wdc_atapi_get_params"); 221 } 222 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 223 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 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 chp->ch_drive[drive].state = 0; 230 231 bus_space_read_1(chp->cmd_iot, chp->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 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 237 "failed for drive %s:%d:%d: error 0x%x\n", 238 wdc->sc_dev.dv_xname, chp->ch_channel, drive, 239 wdc_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 wdc_channel *chp = wdc->channels[chan->chan_channel]; 254 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 255 struct scsipibus_attach_args sa; 256 char serial_number[21], model[41], firmware_revision[9]; 257 258 /* skip if already attached */ 259 if (scsipi_lookup_periph(chan, target, 0) != NULL) 260 return; 261 262 if (wdc_atapi_get_params(chan, target, id) == 0) { 263 #ifdef ATAPI_DEBUG_PROBE 264 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 265 sc->sc_dev.dv_xname, target, 266 id->atap_config & ATAPI_CFG_CMD_MASK, 267 id->atap_config & ATAPI_CFG_DRQ_MASK); 268 #endif 269 periph = scsipi_alloc_periph(M_NOWAIT); 270 if (periph == NULL) { 271 printf("%s: unable to allocate periph for drive %d\n", 272 sc->sc_dev.dv_xname, target); 273 return; 274 } 275 periph->periph_dev = NULL; 276 periph->periph_channel = chan; 277 periph->periph_switch = &atapi_probe_periphsw; 278 periph->periph_target = target; 279 periph->periph_lun = 0; 280 periph->periph_quirks = PQUIRK_ONLYBIG; 281 282 #ifdef SCSIPI_DEBUG 283 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 284 SCSIPI_DEBUG_TARGET == target) 285 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 286 #endif 287 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 288 if (id->atap_config & ATAPI_CFG_REMOV) 289 periph->periph_flags |= PERIPH_REMOVABLE; 290 if (periph->periph_type == T_SEQUENTIAL) 291 drvp->drive_flags |= DRIVE_ATAPIST; 292 293 sa.sa_periph = periph; 294 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 295 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 296 T_REMOV : T_FIXED; 297 scsipi_strvis(model, 40, id->atap_model, 40); 298 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 299 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 300 sa.sa_inqbuf.vendor = model; 301 sa.sa_inqbuf.product = serial_number; 302 sa.sa_inqbuf.revision = firmware_revision; 303 304 /* 305 * Determine the operating mode capabilities of the device. 306 */ 307 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 308 periph->periph_cap |= PERIPH_CAP_CMD16; 309 /* XXX This is gross. */ 310 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 311 312 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 313 314 if (drvp->drv_softc) 315 wdc_probe_caps(drvp); 316 else 317 drvp->drive_flags &= ~DRIVE_ATAPI; 318 } else { 319 drvp->drive_flags &= ~DRIVE_ATAPI; 320 } 321 } 322 323 static void 324 wdc_atapi_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 325 void *arg) 326 { 327 struct scsipi_adapter *adapt = chan->chan_adapter; 328 struct scsipi_periph *periph; 329 struct scsipi_xfer *sc_xfer; 330 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 331 struct ata_xfer *xfer; 332 int channel = chan->chan_channel; 333 int drive, s; 334 335 switch (req) { 336 case ADAPTER_REQ_RUN_XFER: 337 sc_xfer = arg; 338 periph = sc_xfer->xs_periph; 339 drive = periph->periph_target; 340 341 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 342 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 343 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 344 sc_xfer->error = XS_DRIVER_STUFFUP; 345 scsipi_done(sc_xfer); 346 return; 347 } 348 349 xfer = wdc_get_xfer(WDC_NOSLEEP); 350 if (xfer == NULL) { 351 sc_xfer->error = XS_RESOURCE_SHORTAGE; 352 scsipi_done(sc_xfer); 353 return; 354 } 355 356 if (sc_xfer->xs_control & XS_CTL_POLL) 357 xfer->c_flags |= C_POLL; 358 if ((wdc->channels[channel]->ch_drive[drive].drive_flags & 359 (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) 360 xfer->c_flags |= C_DMA; 361 xfer->c_drive = drive; 362 xfer->c_flags |= C_ATAPI; 363 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 364 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 365 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 366 /* 367 * DVD authentication commands must always be done in 368 * PIO mode. 369 */ 370 xfer->c_flags &= ~C_DMA; 371 } 372 /* 373 * DMA can't deal with transfers which are not a multiple of 374 * 2 bytes. It's a bug to request such transfers for ATAPI 375 * but as the request can come from userland, we have to 376 * protect against it. 377 * Also some devices seems to not handle DMA xfers of less than 378 * 4 bytes. 379 */ 380 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 381 xfer->c_flags &= ~C_DMA; 382 383 xfer->c_cmd = sc_xfer; 384 xfer->c_databuf = sc_xfer->data; 385 xfer->c_bcount = sc_xfer->datalen; 386 xfer->c_start = wdc_atapi_start; 387 xfer->c_intr = wdc_atapi_intr; 388 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 389 xfer->c_dscpoll = 0; 390 s = splbio(); 391 wdc_exec_xfer(wdc->channels[channel], xfer); 392 #ifdef DIAGNOSTIC 393 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 394 (sc_xfer->xs_status & XS_STS_DONE) == 0) 395 panic("wdc_atapi_scsipi_request: polled command " 396 "not done"); 397 #endif 398 splx(s); 399 return; 400 401 default: 402 /* Not supported, nothing to do. */ 403 ; 404 } 405 } 406 407 static void 408 wdc_atapi_start(struct wdc_channel *chp, struct ata_xfer *xfer) 409 { 410 struct wdc_softc *wdc = chp->ch_wdc; 411 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 412 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 413 int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0; 414 char *errstring; 415 416 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 417 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive, 418 sc_xfer->xs_control), DEBUG_XFERS); 419 if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER)) 420 drvp->n_xfers++; 421 /* Do control operations specially. */ 422 if (__predict_false(drvp->state < READY)) { 423 /* If it's not a polled command, we need the kenrel thread */ 424 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 && 425 (chp->ch_flags & WDCF_TH_RUN) == 0) { 426 chp->ch_queue->queue_freeze++; 427 wakeup(&chp->ch_thread); 428 return; 429 } 430 /* 431 * disable interrupts, all commands here should be quick 432 * enouth to be able to poll, and we don't go here that often 433 */ 434 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 435 WDCTL_4BIT | WDCTL_IDS); 436 if (wdc->cap & WDC_CAPABILITY_SELECT) 437 wdc->select(chp, xfer->c_drive); 438 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 439 WDSD_IBM | (xfer->c_drive << 4)); 440 /* Don't try to set mode if controller can't be adjusted */ 441 if ((wdc->cap & WDC_CAPABILITY_MODE) == 0) 442 goto ready; 443 /* Also don't try if the drive didn't report its mode */ 444 if ((drvp->drive_flags & DRIVE_MODE) == 0) 445 goto ready; 446 errstring = "unbusy"; 447 if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags)) 448 goto timeout; 449 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 450 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 451 errstring = "piomode"; 452 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 453 goto timeout; 454 if (chp->ch_status & WDCS_ERR) { 455 if (chp->ch_error == WDCE_ABRT) { 456 /* 457 * some ATAPI drives rejects pio settings. 458 * all we can do here is fall back to PIO 0 459 */ 460 drvp->drive_flags &= ~DRIVE_MODE; 461 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 462 drvp->PIO_mode = 0; 463 drvp->DMA_mode = 0; 464 printf("%s:%d:%d: pio setting rejected, " 465 "falling back to PIO mode 0\n", 466 wdc->sc_dev.dv_xname, 467 chp->ch_channel, xfer->c_drive); 468 wdc->set_modes(chp); 469 goto ready; 470 } 471 goto error; 472 } 473 if (drvp->drive_flags & DRIVE_UDMA) { 474 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 475 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 476 } else if (drvp->drive_flags & DRIVE_DMA) { 477 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 478 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 479 } else { 480 goto ready; 481 } 482 errstring = "dmamode"; 483 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 484 goto timeout; 485 if (chp->ch_status & WDCS_ERR) 486 goto error; 487 ready: 488 drvp->state = READY; 489 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, 490 WDCTL_4BIT); 491 delay(10); /* some drives need a little delay here */ 492 } 493 /* start timeout machinery */ 494 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 495 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 496 wdctimeout, chp); 497 498 if (wdc->cap & WDC_CAPABILITY_SELECT) 499 wdc->select(chp, xfer->c_drive); 500 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 501 WDSD_IBM | (xfer->c_drive << 4)); 502 switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) { 503 case WDCWAIT_OK: 504 break; 505 case WDCWAIT_TOUT: 506 printf("wdc_atapi_start: not ready, st = %02x\n", 507 chp->ch_status); 508 sc_xfer->error = XS_TIMEOUT; 509 wdc_atapi_reset(chp, xfer); 510 return; 511 case WDCWAIT_THR: 512 return; 513 } 514 515 /* 516 * Even with WDCS_ERR, the device should accept a command packet 517 * Limit length to what can be stuffed into the cylinder register 518 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 519 * but not all devices do that and it's not obvious from the 520 * ATAPI spec that that behaviour should be expected. If more 521 * data is necessary, multiple data transfer phases will be done. 522 */ 523 524 wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD, 525 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 526 0, 0, 0, 527 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 528 529 /* 530 * If there is no interrupt for CMD input, busy-wait for it (done in 531 * the interrupt routine. If it is a polled command, call the interrupt 532 * routine until command is done. 533 */ 534 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 535 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 536 /* Wait for at last 400ns for status bit to be valid */ 537 DELAY(1); 538 if (chp->ch_flags & WDCF_DMA_WAIT) { 539 wdc_dmawait(chp, xfer, sc_xfer->timeout); 540 chp->ch_flags &= ~WDCF_DMA_WAIT; 541 } 542 wdc_atapi_intr(chp, xfer, 0); 543 } else { 544 chp->ch_flags |= WDCF_IRQ_WAIT; 545 } 546 if (sc_xfer->xs_control & XS_CTL_POLL) { 547 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 548 /* Wait for at last 400ns for status bit to be valid */ 549 DELAY(1); 550 wdc_atapi_intr(chp, xfer, 0); 551 } 552 } 553 return; 554 timeout: 555 printf("%s:%d:%d: %s timed out\n", 556 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 557 errstring); 558 sc_xfer->error = XS_TIMEOUT; 559 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 560 delay(10); /* some drives need a little delay here */ 561 wdc_atapi_reset(chp, xfer); 562 return; 563 error: 564 printf("%s:%d:%d: %s ", 565 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 566 errstring); 567 printf("error (0x%x)\n", chp->ch_error); 568 sc_xfer->error = XS_SHORTSENSE; 569 sc_xfer->sense.atapi_sense = chp->ch_error; 570 bus_space_write_1(chp->ctl_iot, chp->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 571 delay(10); /* some drives need a little delay here */ 572 wdc_atapi_reset(chp, xfer); 573 return; 574 } 575 576 static int 577 wdc_atapi_intr(struct wdc_channel *chp, struct ata_xfer *xfer, int irq) 578 { 579 struct wdc_softc *wdc = chp->ch_wdc; 580 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 581 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 582 int len, phase, i, retries=0; 583 int ire; 584 int dma_flags = 0; 585 void *cmd; 586 587 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 588 wdc->sc_dev.dv_xname, chp->ch_channel, drvp->drive), 589 DEBUG_INTR); 590 591 /* Is it not a transfer, but a control operation? */ 592 if (drvp->state < READY) { 593 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 594 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 595 drvp->state); 596 panic("wdc_atapi_intr: bad state"); 597 } 598 /* 599 * If we missed an interrupt in a PIO transfer, reset and restart. 600 * Don't try to continue transfer, we may have missed cycles. 601 */ 602 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 603 sc_xfer->error = XS_TIMEOUT; 604 wdc_atapi_reset(chp, xfer); 605 return 1; 606 } 607 608 /* Ack interrupt done in wdc_wait_for_unbusy */ 609 if (wdc->cap & WDC_CAPABILITY_SELECT) 610 wdc->select(chp, xfer->c_drive); 611 bus_space_write_1(chp->cmd_iot, chp->cmd_iohs[wd_sdh], 0, 612 WDSD_IBM | (xfer->c_drive << 4)); 613 if (wdc_wait_for_unbusy(chp, 614 (irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) { 615 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 616 return 0; /* IRQ was not for us */ 617 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 618 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 619 xfer->c_bcount, xfer->c_skip); 620 if (xfer->c_flags & C_DMA) { 621 ata_dmaerr(drvp, 622 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 623 } 624 sc_xfer->error = XS_TIMEOUT; 625 wdc_atapi_reset(chp, xfer); 626 return 1; 627 } 628 if (wdc->cap & WDC_CAPABILITY_IRQACK) 629 wdc->irqack(chp); 630 631 /* 632 * If we missed an IRQ and were using DMA, flag it as a DMA error 633 * and reset device. 634 */ 635 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 636 ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); 637 sc_xfer->error = XS_RESET; 638 wdc_atapi_reset(chp, xfer); 639 return (1); 640 } 641 /* 642 * if the request sense command was aborted, report the short sense 643 * previously recorded, else continue normal processing 644 */ 645 646 if (xfer->c_flags & C_DMA) 647 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 648 ? WDC_DMA_READ : 0; 649 again: 650 len = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_lo], 0) + 651 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_cyl_hi], 0); 652 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_iohs[wd_ireason], 0); 653 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 654 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 655 "ire 0x%x :", xfer->c_bcount, 656 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 657 658 switch (phase) { 659 case PHASE_CMDOUT: 660 cmd = sc_xfer->cmd; 661 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 662 /* Init the DMA channel if necessary */ 663 if (xfer->c_flags & C_DMA) { 664 if ((*wdc->dma_init)(wdc->dma_arg, 665 chp->ch_channel, xfer->c_drive, 666 xfer->c_databuf, xfer->c_bcount, dma_flags) != 0) { 667 sc_xfer->error = XS_DRIVER_STUFFUP; 668 break; 669 } 670 } 671 /* send packet command */ 672 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 673 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 674 if (drvp->drive_flags & DRIVE_CAP32) 675 bus_space_write_multi_4(chp->data32iot, 676 chp->data32ioh, 0, (u_int32_t *)cmd, 677 sc_xfer->cmdlen >> 2); 678 else 679 bus_space_write_multi_2(chp->cmd_iot, 680 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 681 sc_xfer->cmdlen >> 1); 682 } else { 683 if (drvp->drive_flags & DRIVE_CAP32) 684 bus_space_write_multi_stream_4(chp->data32iot, 685 chp->data32ioh, 0, (u_int32_t *)cmd, 686 sc_xfer->cmdlen >> 2); 687 else 688 bus_space_write_multi_stream_2(chp->cmd_iot, 689 chp->cmd_iohs[wd_data], 0, (u_int16_t *)cmd, 690 sc_xfer->cmdlen >> 1); 691 } 692 /* Start the DMA channel if necessary */ 693 if (xfer->c_flags & C_DMA) { 694 (*wdc->dma_start)(wdc->dma_arg, 695 chp->ch_channel, xfer->c_drive); 696 chp->ch_flags |= WDCF_DMA_WAIT; 697 } 698 699 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 700 chp->ch_flags |= WDCF_IRQ_WAIT; 701 } 702 return 1; 703 704 case PHASE_DATAOUT: 705 /* write data */ 706 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 707 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 708 (xfer->c_flags & C_DMA) != 0) { 709 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 710 if (xfer->c_flags & C_DMA) { 711 ata_dmaerr(drvp, 712 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 713 } 714 sc_xfer->error = XS_TIMEOUT; 715 wdc_atapi_reset(chp, xfer); 716 return 1; 717 } 718 if (xfer->c_bcount < len) { 719 printf("wdc_atapi_intr: warning: write only " 720 "%d of %d requested bytes\n", xfer->c_bcount, len); 721 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 722 bus_space_write_multi_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 } else { 728 bus_space_write_multi_stream_2(chp->cmd_iot, 729 chp->cmd_iohs[wd_data], 0, 730 (u_int16_t *)((char *)xfer->c_databuf + 731 xfer->c_skip), 732 xfer->c_bcount >> 1); 733 } 734 for (i = xfer->c_bcount; i < len; i += 2) 735 bus_space_write_2(chp->cmd_iot, 736 chp->cmd_iohs[wd_data], 0, 0); 737 xfer->c_skip += xfer->c_bcount; 738 xfer->c_bcount = 0; 739 } else { 740 if (drvp->drive_flags & DRIVE_CAP32) { 741 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 742 bus_space_write_multi_4(chp->data32iot, 743 chp->data32ioh, 0, 744 (u_int32_t *)((char *)xfer->c_databuf + 745 xfer->c_skip), 746 len >> 2); 747 else 748 bus_space_write_multi_stream_4(chp->data32iot, 749 chp->data32ioh, wd_data, 750 (u_int32_t *)((char *)xfer->c_databuf + 751 xfer->c_skip), 752 len >> 2); 753 754 xfer->c_skip += len & 0xfffffffc; 755 xfer->c_bcount -= len & 0xfffffffc; 756 len = len & 0x03; 757 } 758 if (len > 0) { 759 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 760 bus_space_write_multi_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 else 766 bus_space_write_multi_stream_2(chp->cmd_iot, 767 chp->cmd_iohs[wd_data], 0, 768 (u_int16_t *)((char *)xfer->c_databuf + 769 xfer->c_skip), 770 len >> 1); 771 xfer->c_skip += len; 772 xfer->c_bcount -= len; 773 } 774 } 775 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 776 chp->ch_flags |= WDCF_IRQ_WAIT; 777 } 778 return 1; 779 780 case PHASE_DATAIN: 781 /* Read data */ 782 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 783 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 784 (xfer->c_flags & C_DMA) != 0) { 785 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 786 if (xfer->c_flags & C_DMA) { 787 ata_dmaerr(drvp, 788 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 789 } 790 sc_xfer->error = XS_TIMEOUT; 791 wdc_atapi_reset(chp, xfer); 792 return 1; 793 } 794 if (xfer->c_bcount < len) { 795 printf("wdc_atapi_intr: warning: reading only " 796 "%d of %d bytes\n", xfer->c_bcount, len); 797 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 798 bus_space_read_multi_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 } else { 804 bus_space_read_multi_stream_2(chp->cmd_iot, 805 chp->cmd_iohs[wd_data], 0, 806 (u_int16_t *)((char *)xfer->c_databuf + 807 xfer->c_skip), 808 xfer->c_bcount >> 1); 809 } 810 wdcbit_bucket(chp, len - xfer->c_bcount); 811 xfer->c_skip += xfer->c_bcount; 812 xfer->c_bcount = 0; 813 } else { 814 if (drvp->drive_flags & DRIVE_CAP32) { 815 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 816 bus_space_read_multi_4(chp->data32iot, 817 chp->data32ioh, 0, 818 (u_int32_t *)((char *)xfer->c_databuf + 819 xfer->c_skip), 820 len >> 2); 821 else 822 bus_space_read_multi_stream_4(chp->data32iot, 823 chp->data32ioh, wd_data, 824 (u_int32_t *)((char *)xfer->c_databuf + 825 xfer->c_skip), 826 len >> 2); 827 828 xfer->c_skip += len & 0xfffffffc; 829 xfer->c_bcount -= len & 0xfffffffc; 830 len = len & 0x03; 831 } 832 if (len > 0) { 833 if ((wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 834 bus_space_read_multi_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 else 840 bus_space_read_multi_stream_2(chp->cmd_iot, 841 chp->cmd_iohs[wd_data], 0, 842 (u_int16_t *)((char *)xfer->c_databuf + 843 xfer->c_skip), 844 len >> 1); 845 xfer->c_skip += len; 846 xfer->c_bcount -=len; 847 } 848 } 849 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 850 chp->ch_flags |= WDCF_IRQ_WAIT; 851 } 852 return 1; 853 854 case PHASE_ABORTED: 855 case PHASE_COMPLETED: 856 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 857 if (xfer->c_flags & C_DMA) { 858 xfer->c_bcount -= sc_xfer->datalen; 859 } 860 sc_xfer->resid = xfer->c_bcount; 861 wdc_atapi_phase_complete(xfer); 862 return(1); 863 864 default: 865 if (++retries<500) { 866 DELAY(100); 867 chp->ch_status = bus_space_read_1(chp->cmd_iot, 868 chp->cmd_iohs[wd_status], 0); 869 chp->ch_error = bus_space_read_1(chp->cmd_iot, 870 chp->cmd_iohs[wd_error], 0); 871 goto again; 872 } 873 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 874 if (chp->ch_status & WDCS_ERR) { 875 sc_xfer->error = XS_SHORTSENSE; 876 sc_xfer->sense.atapi_sense = chp->ch_error; 877 } else { 878 if (xfer->c_flags & C_DMA) { 879 ata_dmaerr(drvp, 880 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 881 } 882 sc_xfer->error = XS_RESET; 883 wdc_atapi_reset(chp, xfer); 884 return (1); 885 } 886 } 887 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 888 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 889 DEBUG_INTR); 890 wdc_atapi_done(chp, xfer); 891 return (1); 892 } 893 894 static void 895 wdc_atapi_phase_complete(struct ata_xfer *xfer) 896 { 897 struct wdc_channel *chp = xfer->c_chp; 898 struct wdc_softc *wdc = chp->ch_wdc; 899 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 900 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 901 902 /* wait for DSC if needed */ 903 if (drvp->drive_flags & DRIVE_ATAPIST) { 904 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 905 "polldsc %d\n", wdc->sc_dev.dv_xname, chp->ch_channel, 906 xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS); 907 #if 1 908 if (cold) 909 panic("wdc_atapi_phase_complete: cold"); 910 #endif 911 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10, 912 AT_POLL) == WDCWAIT_TOUT) { 913 /* 10ms not enough, try again in 1 tick */ 914 if (xfer->c_dscpoll++ > 915 mstohz(sc_xfer->timeout)) { 916 printf("%s:%d:%d: wait_for_dsc " 917 "failed\n", 918 wdc->sc_dev.dv_xname, 919 chp->ch_channel, xfer->c_drive); 920 sc_xfer->error = XS_TIMEOUT; 921 wdc_atapi_reset(chp, xfer); 922 return; 923 } else 924 callout_reset(&chp->ch_callout, 1, 925 wdc_atapi_polldsc, xfer); 926 return; 927 } 928 } 929 930 /* 931 * Some drive occasionally set WDCS_ERR with 932 * "ATA illegal length indication" in the error 933 * register. If we read some data the sense is valid 934 * anyway, so don't report the error. 935 */ 936 if (chp->ch_status & WDCS_ERR && 937 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 938 sc_xfer->resid == sc_xfer->datalen)) { 939 /* save the short sense */ 940 sc_xfer->error = XS_SHORTSENSE; 941 sc_xfer->sense.atapi_sense = chp->ch_error; 942 if ((sc_xfer->xs_periph->periph_quirks & 943 PQUIRK_NOSENSE) == 0) { 944 /* ask scsipi to send a REQUEST_SENSE */ 945 sc_xfer->error = XS_BUSY; 946 sc_xfer->status = SCSI_CHECK; 947 } else if (wdc->dma_status & 948 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 949 ata_dmaerr(drvp, 950 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 951 sc_xfer->error = XS_RESET; 952 wdc_atapi_reset(chp, xfer); 953 return; 954 } 955 } 956 if (xfer->c_bcount != 0) { 957 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 958 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 959 } 960 #ifdef DIAGNOSTIC 961 if (xfer->c_bcount < 0) { 962 printf("wdc_atapi_intr warning: bcount value " 963 "is %d after io\n", xfer->c_bcount); 964 } 965 #endif 966 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 967 "error 0x%x sense 0x%x\n", sc_xfer->error, 968 sc_xfer->sense.atapi_sense), DEBUG_INTR); 969 wdc_atapi_done(chp, xfer); 970 } 971 972 static void 973 wdc_atapi_done(struct wdc_channel *chp, struct ata_xfer *xfer) 974 { 975 struct wdc_softc *wdc = chp->ch_wdc; 976 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 977 978 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 979 wdc->sc_dev.dv_xname, chp->ch_channel, xfer->c_drive, 980 (u_int)xfer->c_flags), DEBUG_XFERS); 981 callout_stop(&chp->ch_callout); 982 /* remove this command from xfer queue */ 983 wdc_free_xfer(chp, xfer); 984 985 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 986 scsipi_done(sc_xfer); 987 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 988 chp->ch_flags), DEBUG_XFERS); 989 wdcstart(chp); 990 } 991 992 static void 993 wdc_atapi_reset(struct wdc_channel *chp, struct ata_xfer *xfer) 994 { 995 struct wdc_softc *wdc = chp->ch_wdc; 996 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 997 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 998 999 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 1000 drvp->state = 0; 1001 if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) { 1002 printf("%s:%d:%d: reset failed\n", 1003 wdc->sc_dev.dv_xname, chp->ch_channel, 1004 xfer->c_drive); 1005 sc_xfer->error = XS_SELTIMEOUT; 1006 } 1007 wdc_atapi_done(chp, xfer); 1008 return; 1009 } 1010 1011 static void 1012 wdc_atapi_polldsc(void *arg) 1013 { 1014 1015 wdc_atapi_phase_complete(arg); 1016 } 1017
Indexes created Wed Sep 24 15:09:51 GMT 2025