atapi_wdc.c revision 1.100
1 /* $NetBSD: atapi_wdc.c,v 1.100 2006/06/27 10:39:51 tron 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 1.100 2006/06/27 10:39:51 tron 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_ia(&ata_sc->sc_dev, "atapi", chan, 144 atapiprint); 145 } 146 147 static void 148 wdc_atapi_minphys(struct buf *bp) 149 { 150 151 if (bp->b_bcount > MAX_SIZE) 152 bp->b_bcount = MAX_SIZE; 153 minphys(bp); 154 } 155 156 /* 157 * Kill off all pending xfers for a periph. 158 * 159 * Must be called at splbio(). 160 */ 161 static void 162 wdc_atapi_kill_pending(struct scsipi_periph *periph) 163 { 164 struct atac_softc *atac = 165 (void *)periph->periph_channel->chan_adapter->adapt_dev; 166 struct ata_channel *chp = 167 atac->atac_channels[periph->periph_channel->chan_channel]; 168 169 ata_kill_pending(&chp->ch_drive[periph->periph_target]); 170 } 171 172 static void 173 wdc_atapi_kill_xfer(struct ata_channel *chp, struct ata_xfer *xfer, int reason) 174 { 175 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 176 177 /* remove this command from xfer queue */ 178 switch (reason) { 179 case KILL_GONE: 180 sc_xfer->error = XS_DRIVER_STUFFUP; 181 break; 182 case KILL_RESET: 183 sc_xfer->error = XS_RESET; 184 break; 185 default: 186 printf("wdc_ata_bio_kill_xfer: unknown reason %d\n", 187 reason); 188 panic("wdc_ata_bio_kill_xfer"); 189 } 190 ata_free_xfer(chp, xfer); 191 scsipi_done(sc_xfer); 192 } 193 194 static int 195 wdc_atapi_get_params(struct scsipi_channel *chan, int drive, 196 struct ataparams *id) 197 { 198 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 199 struct atac_softc *atac = &wdc->sc_atac; 200 struct wdc_regs *wdr = &wdc->regs[chan->chan_channel]; 201 struct ata_channel *chp = atac->atac_channels[chan->chan_channel]; 202 struct ata_command ata_c; 203 204 /* if no ATAPI device detected at wdc attach time, skip */ 205 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 206 ATADEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 207 drive), DEBUG_PROBE); 208 return -1; 209 } 210 211 memset(&ata_c, 0, sizeof(struct ata_command)); 212 ata_c.r_command = ATAPI_SOFT_RESET; 213 ata_c.r_st_bmask = 0; 214 ata_c.r_st_pmask = 0; 215 ata_c.flags = AT_WAIT | AT_POLL; 216 ata_c.timeout = WDC_RESET_WAIT; 217 if (wdc_exec_command(&chp->ch_drive[drive], &ata_c) != ATACMD_COMPLETE) { 218 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 219 " drive %s:%d:%d: driver failed\n", 220 atac->atac_dev.dv_xname, chp->ch_channel, drive); 221 panic("wdc_atapi_get_params"); 222 } 223 if (ata_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 224 ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 225 "failed for drive %s:%d:%d: error 0x%x\n", 226 atac->atac_dev.dv_xname, chp->ch_channel, drive, 227 ata_c.r_error), DEBUG_PROBE); 228 return -1; 229 } 230 chp->ch_drive[drive].state = 0; 231 232 (void)bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_status], 0); 233 234 /* Some ATAPI devices need a bit more time after software reset. */ 235 delay(5000); 236 if (ata_get_params(&chp->ch_drive[drive], AT_WAIT, id) != 0) { 237 ATADEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 238 "failed for drive %s:%d:%d: error 0x%x\n", 239 atac->atac_dev.dv_xname, chp->ch_channel, drive, 240 ata_c.r_error), DEBUG_PROBE); 241 return -1; 242 } 243 return 0; 244 } 245 246 static void 247 wdc_atapi_probe_device(struct atapibus_softc *sc, int target) 248 { 249 struct scsipi_channel *chan = sc->sc_channel; 250 struct scsipi_periph *periph; 251 struct ataparams ids; 252 struct ataparams *id = &ids; 253 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 254 struct atac_softc *atac = &wdc->sc_atac; 255 struct ata_channel *chp = atac->atac_channels[chan->chan_channel]; 256 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 257 struct scsipibus_attach_args sa; 258 char serial_number[21], model[41], firmware_revision[9]; 259 int s; 260 261 /* skip if already attached */ 262 if (scsipi_lookup_periph(chan, target, 0) != NULL) 263 return; 264 265 if (wdc_atapi_get_params(chan, target, id) == 0) { 266 #ifdef ATAPI_DEBUG_PROBE 267 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 268 sc->sc_dev.dv_xname, target, 269 id->atap_config & ATAPI_CFG_CMD_MASK, 270 id->atap_config & ATAPI_CFG_DRQ_MASK); 271 #endif 272 periph = scsipi_alloc_periph(M_NOWAIT); 273 if (periph == NULL) { 274 printf("%s: unable to allocate periph for drive %d\n", 275 sc->sc_dev.dv_xname, target); 276 return; 277 } 278 periph->periph_dev = NULL; 279 periph->periph_channel = chan; 280 periph->periph_switch = &atapi_probe_periphsw; 281 periph->periph_target = target; 282 periph->periph_lun = 0; 283 periph->periph_quirks = PQUIRK_ONLYBIG; 284 285 #ifdef SCSIPI_DEBUG 286 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 287 SCSIPI_DEBUG_TARGET == target) 288 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 289 #endif 290 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 291 if (id->atap_config & ATAPI_CFG_REMOV) 292 periph->periph_flags |= PERIPH_REMOVABLE; 293 if (periph->periph_type == T_SEQUENTIAL) { 294 s = splbio(); 295 drvp->drive_flags |= DRIVE_ATAPIST; 296 splx(s); 297 } 298 299 sa.sa_periph = periph; 300 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 301 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 302 T_REMOV : T_FIXED; 303 scsipi_strvis((u_char *)model, 40, id->atap_model, 40); 304 scsipi_strvis((u_char *)serial_number, 20, id->atap_serial, 305 20); 306 scsipi_strvis((u_char *)firmware_revision, 8, 307 id->atap_revision, 8); 308 sa.sa_inqbuf.vendor = model; 309 sa.sa_inqbuf.product = serial_number; 310 sa.sa_inqbuf.revision = firmware_revision; 311 312 /* 313 * Determine the operating mode capabilities of the device. 314 */ 315 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 316 periph->periph_cap |= PERIPH_CAP_CMD16; 317 /* XXX This is gross. */ 318 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 319 320 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 321 322 if (drvp->drv_softc) 323 ata_probe_caps(drvp); 324 else { 325 s = splbio(); 326 drvp->drive_flags &= ~DRIVE_ATAPI; 327 splx(s); 328 } 329 } else { 330 s = splbio(); 331 drvp->drive_flags &= ~DRIVE_ATAPI; 332 splx(s); 333 } 334 } 335 336 static void 337 wdc_atapi_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 338 void *arg) 339 { 340 struct scsipi_adapter *adapt = chan->chan_adapter; 341 struct scsipi_periph *periph; 342 struct scsipi_xfer *sc_xfer; 343 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 344 struct atac_softc *atac = &wdc->sc_atac; 345 struct ata_xfer *xfer; 346 int channel = chan->chan_channel; 347 int drive, s; 348 349 switch (req) { 350 case ADAPTER_REQ_RUN_XFER: 351 sc_xfer = arg; 352 periph = sc_xfer->xs_periph; 353 drive = periph->periph_target; 354 355 ATADEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 356 atac->atac_dev.dv_xname, channel, drive), DEBUG_XFERS); 357 if (!device_is_active(&atac->atac_dev)) { 358 sc_xfer->error = XS_DRIVER_STUFFUP; 359 scsipi_done(sc_xfer); 360 return; 361 } 362 363 xfer = ata_get_xfer(ATAXF_NOSLEEP); 364 if (xfer == NULL) { 365 sc_xfer->error = XS_RESOURCE_SHORTAGE; 366 scsipi_done(sc_xfer); 367 return; 368 } 369 370 if (sc_xfer->xs_control & XS_CTL_POLL) 371 xfer->c_flags |= C_POLL; 372 if ((atac->atac_channels[channel]->ch_drive[drive].drive_flags & 373 (DRIVE_DMA | DRIVE_UDMA)) && sc_xfer->datalen > 0) 374 xfer->c_flags |= C_DMA; 375 xfer->c_drive = drive; 376 xfer->c_flags |= C_ATAPI; 377 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 378 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 379 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 380 /* 381 * DVD authentication commands must always be done in 382 * PIO mode. 383 */ 384 xfer->c_flags &= ~C_DMA; 385 } 386 /* 387 * DMA can't deal with transfers which are not a multiple of 388 * 2 bytes. It's a bug to request such transfers for ATAPI 389 * but as the request can come from userland, we have to 390 * protect against it. 391 * Also some devices seems to not handle DMA xfers of less than 392 * 4 bytes. 393 */ 394 if (sc_xfer->datalen < 4 || (sc_xfer->datalen & 0x01)) 395 xfer->c_flags &= ~C_DMA; 396 397 xfer->c_cmd = sc_xfer; 398 xfer->c_databuf = sc_xfer->data; 399 xfer->c_bcount = sc_xfer->datalen; 400 xfer->c_start = wdc_atapi_start; 401 xfer->c_intr = wdc_atapi_intr; 402 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 403 xfer->c_dscpoll = 0; 404 s = splbio(); 405 ata_exec_xfer(atac->atac_channels[channel], xfer); 406 #ifdef DIAGNOSTIC 407 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 408 (sc_xfer->xs_status & XS_STS_DONE) == 0) 409 panic("wdc_atapi_scsipi_request: polled command " 410 "not done"); 411 #endif 412 splx(s); 413 return; 414 415 default: 416 /* Not supported, nothing to do. */ 417 ; 418 } 419 } 420 421 static void 422 wdc_atapi_start(struct ata_channel *chp, struct ata_xfer *xfer) 423 { 424 struct atac_softc *atac = chp->ch_atac; 425 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 426 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 427 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 428 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 429 int wait_flags = (sc_xfer->xs_control & XS_CTL_POLL) ? AT_POLL : 0; 430 const char *errstring; 431 432 ATADEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 433 atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive, 434 sc_xfer->xs_control), DEBUG_XFERS); 435 if ((xfer->c_flags & C_DMA) && (drvp->n_xfers <= NXFER)) 436 drvp->n_xfers++; 437 /* Do control operations specially. */ 438 if (__predict_false(drvp->state < READY)) { 439 /* If it's not a polled command, we need the kernel thread */ 440 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0 && 441 (chp->ch_flags & ATACH_TH_RUN) == 0) { 442 chp->ch_queue->queue_freeze++; 443 wakeup(&chp->ch_thread); 444 return; 445 } 446 /* 447 * disable interrupts, all commands here should be quick 448 * enouth to be able to poll, and we don't go here that often 449 */ 450 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 451 WDCTL_4BIT | WDCTL_IDS); 452 if (wdc->select) 453 wdc->select(chp, xfer->c_drive); 454 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 455 WDSD_IBM | (xfer->c_drive << 4)); 456 /* Don't try to set mode if controller can't be adjusted */ 457 if (atac->atac_set_modes == NULL) 458 goto ready; 459 /* Also don't try if the drive didn't report its mode */ 460 if ((drvp->drive_flags & DRIVE_MODE) == 0) 461 goto ready; 462 errstring = "unbusy"; 463 if (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags)) 464 goto timeout; 465 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 466 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 467 errstring = "piomode"; 468 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 469 goto timeout; 470 if (chp->ch_status & WDCS_ERR) { 471 if (chp->ch_error == WDCE_ABRT) { 472 /* 473 * Some ATAPI drives reject PIO settings. 474 * Fall back to PIO mode 3 since that's the 475 * minimum for ATAPI. 476 */ 477 printf("%s:%d:%d: PIO mode %d rejected, " 478 "falling back to PIO mode 3\n", 479 atac->atac_dev.dv_xname, 480 chp->ch_channel, xfer->c_drive, 481 drvp->PIO_mode); 482 if (drvp->PIO_mode > 3) 483 drvp->PIO_mode = 3; 484 } else 485 goto error; 486 } 487 if (drvp->drive_flags & DRIVE_UDMA) { 488 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 489 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 490 } else if (drvp->drive_flags & DRIVE_DMA) { 491 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 492 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 493 } else { 494 goto ready; 495 } 496 errstring = "dmamode"; 497 if (wdc_wait_for_unbusy(chp, ATAPI_MODE_DELAY, wait_flags)) 498 goto timeout; 499 if (chp->ch_status & WDCS_ERR) { 500 if (chp->ch_error == WDCE_ABRT) { 501 if (drvp->drive_flags & DRIVE_UDMA) 502 goto error; 503 else { 504 /* 505 * The drive rejected our DMA setting. 506 * Fall back to mode 1. 507 */ 508 printf("%s:%d:%d: DMA mode %d rejected, " 509 "falling back to DMA mode 0\n", 510 atac->atac_dev.dv_xname, 511 chp->ch_channel, xfer->c_drive, 512 drvp->DMA_mode); 513 if (drvp->DMA_mode > 0) 514 drvp->DMA_mode = 0; 515 } 516 } else 517 goto error; 518 } 519 ready: 520 drvp->state = READY; 521 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, 522 WDCTL_4BIT); 523 delay(10); /* some drives need a little delay here */ 524 } 525 /* start timeout machinery */ 526 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 527 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 528 wdctimeout, chp); 529 530 if (wdc->select) 531 wdc->select(chp, xfer->c_drive); 532 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 533 WDSD_IBM | (xfer->c_drive << 4)); 534 switch (wdc_wait_for_unbusy(chp, ATAPI_DELAY, wait_flags) < 0) { 535 case WDCWAIT_OK: 536 break; 537 case WDCWAIT_TOUT: 538 printf("wdc_atapi_start: not ready, st = %02x\n", 539 chp->ch_status); 540 sc_xfer->error = XS_TIMEOUT; 541 wdc_atapi_reset(chp, xfer); 542 return; 543 case WDCWAIT_THR: 544 return; 545 } 546 547 /* 548 * Even with WDCS_ERR, the device should accept a command packet 549 * Limit length to what can be stuffed into the cylinder register 550 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 551 * but not all devices do that and it's not obvious from the 552 * ATAPI spec that that behaviour should be expected. If more 553 * data is necessary, multiple data transfer phases will be done. 554 */ 555 556 wdccommand(chp, xfer->c_drive, ATAPI_PKT_CMD, 557 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 558 0, 0, 0, 559 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 560 561 /* 562 * If there is no interrupt for CMD input, busy-wait for it (done in 563 * the interrupt routine. If it is a polled command, call the interrupt 564 * routine until command is done. 565 */ 566 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 567 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 568 /* Wait for at last 400ns for status bit to be valid */ 569 DELAY(1); 570 wdc_atapi_intr(chp, xfer, 0); 571 } else { 572 chp->ch_flags |= ATACH_IRQ_WAIT; 573 } 574 if (sc_xfer->xs_control & XS_CTL_POLL) { 575 if (chp->ch_flags & ATACH_DMA_WAIT) { 576 wdc_dmawait(chp, xfer, sc_xfer->timeout); 577 chp->ch_flags &= ~ATACH_DMA_WAIT; 578 } 579 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 580 /* Wait for at last 400ns for status bit to be valid */ 581 DELAY(1); 582 wdc_atapi_intr(chp, xfer, 0); 583 } 584 } 585 return; 586 timeout: 587 printf("%s:%d:%d: %s timed out\n", 588 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 589 errstring); 590 sc_xfer->error = XS_TIMEOUT; 591 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 592 delay(10); /* some drives need a little delay here */ 593 wdc_atapi_reset(chp, xfer); 594 return; 595 error: 596 printf("%s:%d:%d: %s ", 597 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 598 errstring); 599 printf("error (0x%x)\n", chp->ch_error); 600 sc_xfer->error = XS_SHORTSENSE; 601 sc_xfer->sense.atapi_sense = chp->ch_error; 602 bus_space_write_1(wdr->ctl_iot, wdr->ctl_ioh, wd_aux_ctlr, WDCTL_4BIT); 603 delay(10); /* some drives need a little delay here */ 604 wdc_atapi_reset(chp, xfer); 605 return; 606 } 607 608 static int 609 wdc_atapi_intr(struct ata_channel *chp, struct ata_xfer *xfer, int irq) 610 { 611 struct atac_softc *atac = chp->ch_atac; 612 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 613 struct wdc_regs *wdr = &wdc->regs[chp->ch_channel]; 614 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 615 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 616 int len, phase, i, retries=0; 617 int ire, error; 618 int dma_flags = 0; 619 void *cmd; 620 621 ATADEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 622 atac->atac_dev.dv_xname, chp->ch_channel, drvp->drive), 623 DEBUG_INTR); 624 625 /* Is it not a transfer, but a control operation? */ 626 if (drvp->state < READY) { 627 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 628 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 629 drvp->state); 630 panic("wdc_atapi_intr: bad state"); 631 } 632 /* 633 * If we missed an interrupt in a PIO transfer, reset and restart. 634 * Don't try to continue transfer, we may have missed cycles. 635 */ 636 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 637 sc_xfer->error = XS_TIMEOUT; 638 wdc_atapi_reset(chp, xfer); 639 return 1; 640 } 641 642 /* Ack interrupt done in wdc_wait_for_unbusy */ 643 if (wdc->select) 644 wdc->select(chp, xfer->c_drive); 645 bus_space_write_1(wdr->cmd_iot, wdr->cmd_iohs[wd_sdh], 0, 646 WDSD_IBM | (xfer->c_drive << 4)); 647 if (wdc_wait_for_unbusy(chp, 648 (irq == 0) ? sc_xfer->timeout : 0, AT_POLL) == WDCWAIT_TOUT) { 649 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 650 return 0; /* IRQ was not for us */ 651 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 652 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 653 xfer->c_bcount, xfer->c_skip); 654 if (xfer->c_flags & C_DMA) { 655 ata_dmaerr(drvp, 656 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 657 } 658 sc_xfer->error = XS_TIMEOUT; 659 wdc_atapi_reset(chp, xfer); 660 return 1; 661 } 662 if (wdc->irqack) 663 wdc->irqack(chp); 664 665 /* 666 * If we missed an IRQ and were using DMA, flag it as a DMA error 667 * and reset device. 668 */ 669 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 670 ata_dmaerr(drvp, (xfer->c_flags & C_POLL) ? AT_POLL : 0); 671 sc_xfer->error = XS_RESET; 672 wdc_atapi_reset(chp, xfer); 673 return (1); 674 } 675 /* 676 * if the request sense command was aborted, report the short sense 677 * previously recorded, else continue normal processing 678 */ 679 680 if (xfer->c_flags & C_DMA) 681 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 682 ? WDC_DMA_READ : 0; 683 again: 684 len = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_lo], 0) + 685 256 * bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_cyl_hi], 0); 686 ire = bus_space_read_1(wdr->cmd_iot, wdr->cmd_iohs[wd_ireason], 0); 687 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 688 ATADEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 689 "ire 0x%x :", xfer->c_bcount, 690 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 691 692 switch (phase) { 693 case PHASE_CMDOUT: 694 cmd = sc_xfer->cmd; 695 ATADEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 696 /* Init the DMA channel if necessary */ 697 if (xfer->c_flags & C_DMA) { 698 error = (*wdc->dma_init)(wdc->dma_arg, 699 chp->ch_channel, xfer->c_drive, 700 xfer->c_databuf, xfer->c_bcount, dma_flags); 701 if (error) { 702 if (error == EINVAL) { 703 /* 704 * We can't do DMA on this transfer 705 * for some reason. Fall back to 706 * PIO. 707 */ 708 xfer->c_flags &= ~C_DMA; 709 error = 0; 710 } else { 711 sc_xfer->error = XS_DRIVER_STUFFUP; 712 break; 713 } 714 } 715 } 716 717 /* send packet command */ 718 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 719 wdc->dataout_pio(chp, drvp->drive_flags, cmd, sc_xfer->cmdlen); 720 721 /* Start the DMA channel if necessary */ 722 if (xfer->c_flags & C_DMA) { 723 (*wdc->dma_start)(wdc->dma_arg, 724 chp->ch_channel, xfer->c_drive); 725 chp->ch_flags |= ATACH_DMA_WAIT; 726 } 727 728 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 729 chp->ch_flags |= ATACH_IRQ_WAIT; 730 } 731 return 1; 732 733 case PHASE_DATAOUT: 734 /* write data */ 735 ATADEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 736 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 737 (xfer->c_flags & C_DMA) != 0) { 738 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 739 if (xfer->c_flags & C_DMA) { 740 ata_dmaerr(drvp, 741 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 742 } 743 sc_xfer->error = XS_TIMEOUT; 744 wdc_atapi_reset(chp, xfer); 745 return 1; 746 } 747 if (xfer->c_bcount < len) { 748 printf("wdc_atapi_intr: warning: write only " 749 "%d of %d requested bytes\n", xfer->c_bcount, len); 750 wdc->dataout_pio(chp, drvp->drive_flags, 751 (char *)xfer->c_databuf + xfer->c_skip, 752 xfer->c_bcount); 753 for (i = xfer->c_bcount; i < len; i += 2) 754 bus_space_write_2(wdr->cmd_iot, 755 wdr->cmd_iohs[wd_data], 0, 0); 756 xfer->c_skip += xfer->c_bcount; 757 xfer->c_bcount = 0; 758 } else { 759 wdc->dataout_pio(chp, drvp->drive_flags, 760 (char *)xfer->c_databuf + xfer->c_skip, len); 761 xfer->c_skip += len; 762 xfer->c_bcount -= len; 763 } 764 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 765 chp->ch_flags |= ATACH_IRQ_WAIT; 766 } 767 return 1; 768 769 case PHASE_DATAIN: 770 /* Read data */ 771 ATADEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 772 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 773 (xfer->c_flags & C_DMA) != 0) { 774 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 775 if (xfer->c_flags & C_DMA) { 776 ata_dmaerr(drvp, 777 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 778 } 779 sc_xfer->error = XS_TIMEOUT; 780 wdc_atapi_reset(chp, xfer); 781 return 1; 782 } 783 if (xfer->c_bcount < len) { 784 printf("wdc_atapi_intr: warning: reading only " 785 "%d of %d bytes\n", xfer->c_bcount, len); 786 wdc->datain_pio(chp, drvp->drive_flags, 787 (char *)xfer->c_databuf + xfer->c_skip, 788 xfer->c_bcount); 789 wdcbit_bucket(chp, len - xfer->c_bcount); 790 xfer->c_skip += xfer->c_bcount; 791 xfer->c_bcount = 0; 792 } else { 793 wdc->datain_pio(chp, drvp->drive_flags, 794 (char *)xfer->c_databuf + xfer->c_skip, len); 795 xfer->c_skip += len; 796 xfer->c_bcount -=len; 797 } 798 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 799 chp->ch_flags |= ATACH_IRQ_WAIT; 800 } 801 return 1; 802 803 case PHASE_ABORTED: 804 case PHASE_COMPLETED: 805 ATADEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 806 if (xfer->c_flags & C_DMA) { 807 xfer->c_bcount -= sc_xfer->datalen; 808 } 809 sc_xfer->resid = xfer->c_bcount; 810 wdc_atapi_phase_complete(xfer); 811 return(1); 812 813 default: 814 if (++retries<500) { 815 DELAY(100); 816 chp->ch_status = bus_space_read_1(wdr->cmd_iot, 817 wdr->cmd_iohs[wd_status], 0); 818 chp->ch_error = bus_space_read_1(wdr->cmd_iot, 819 wdr->cmd_iohs[wd_error], 0); 820 goto again; 821 } 822 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 823 if (chp->ch_status & WDCS_ERR) { 824 sc_xfer->error = XS_SHORTSENSE; 825 sc_xfer->sense.atapi_sense = chp->ch_error; 826 } else { 827 if (xfer->c_flags & C_DMA) { 828 ata_dmaerr(drvp, 829 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 830 } 831 sc_xfer->error = XS_RESET; 832 wdc_atapi_reset(chp, xfer); 833 return (1); 834 } 835 } 836 ATADEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 837 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 838 DEBUG_INTR); 839 wdc_atapi_done(chp, xfer); 840 return (1); 841 } 842 843 static void 844 wdc_atapi_phase_complete(struct ata_xfer *xfer) 845 { 846 struct ata_channel *chp = xfer->c_chp; 847 struct atac_softc *atac = chp->ch_atac; 848 struct wdc_softc *wdc = CHAN_TO_WDC(chp); 849 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 850 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 851 852 /* wait for DSC if needed */ 853 if (drvp->drive_flags & DRIVE_ATAPIST) { 854 ATADEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 855 "polldsc %d\n", atac->atac_dev.dv_xname, chp->ch_channel, 856 xfer->c_drive, xfer->c_dscpoll), DEBUG_XFERS); 857 #if 1 858 if (cold) 859 panic("wdc_atapi_phase_complete: cold"); 860 #endif 861 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10, 862 AT_POLL) == WDCWAIT_TOUT) { 863 /* 10ms not enough, try again in 1 tick */ 864 if (xfer->c_dscpoll++ > 865 mstohz(sc_xfer->timeout)) { 866 printf("%s:%d:%d: wait_for_dsc " 867 "failed\n", 868 atac->atac_dev.dv_xname, 869 chp->ch_channel, xfer->c_drive); 870 sc_xfer->error = XS_TIMEOUT; 871 wdc_atapi_reset(chp, xfer); 872 return; 873 } else 874 callout_reset(&chp->ch_callout, 1, 875 wdc_atapi_polldsc, xfer); 876 return; 877 } 878 } 879 880 /* 881 * Some drive occasionally set WDCS_ERR with 882 * "ATA illegal length indication" in the error 883 * register. If we read some data the sense is valid 884 * anyway, so don't report the error. 885 */ 886 if (chp->ch_status & WDCS_ERR && 887 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 888 sc_xfer->resid == sc_xfer->datalen)) { 889 /* save the short sense */ 890 sc_xfer->error = XS_SHORTSENSE; 891 sc_xfer->sense.atapi_sense = chp->ch_error; 892 if ((sc_xfer->xs_periph->periph_quirks & 893 PQUIRK_NOSENSE) == 0) { 894 /* ask scsipi to send a REQUEST_SENSE */ 895 sc_xfer->error = XS_BUSY; 896 sc_xfer->status = SCSI_CHECK; 897 } else if (wdc->dma_status & 898 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 899 ata_dmaerr(drvp, 900 (xfer->c_flags & C_POLL) ? AT_POLL : 0); 901 sc_xfer->error = XS_RESET; 902 wdc_atapi_reset(chp, xfer); 903 return; 904 } 905 } 906 if (xfer->c_bcount != 0) { 907 ATADEBUG_PRINT(("wdc_atapi_intr: bcount value is " 908 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 909 } 910 #ifdef DIAGNOSTIC 911 if (xfer->c_bcount < 0) { 912 printf("wdc_atapi_intr warning: bcount value " 913 "is %d after io\n", xfer->c_bcount); 914 } 915 #endif 916 ATADEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 917 "error 0x%x sense 0x%x\n", sc_xfer->error, 918 sc_xfer->sense.atapi_sense), DEBUG_INTR); 919 wdc_atapi_done(chp, xfer); 920 } 921 922 static void 923 wdc_atapi_done(struct ata_channel *chp, struct ata_xfer *xfer) 924 { 925 struct atac_softc *atac = chp->ch_atac; 926 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 927 int drive = xfer->c_drive; 928 929 ATADEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 930 atac->atac_dev.dv_xname, chp->ch_channel, xfer->c_drive, 931 (u_int)xfer->c_flags), DEBUG_XFERS); 932 callout_stop(&chp->ch_callout); 933 /* mark controller inactive and free the command */ 934 chp->ch_queue->active_xfer = NULL; 935 ata_free_xfer(chp, xfer); 936 937 if (chp->ch_drive[drive].drive_flags & DRIVE_WAITDRAIN) { 938 sc_xfer->error = XS_DRIVER_STUFFUP; 939 chp->ch_drive[drive].drive_flags &= ~DRIVE_WAITDRAIN; 940 wakeup(&chp->ch_queue->active_xfer); 941 } 942 943 ATADEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 944 scsipi_done(sc_xfer); 945 ATADEBUG_PRINT(("atastart from wdc_atapi_done, flags 0x%x\n", 946 chp->ch_flags), DEBUG_XFERS); 947 atastart(chp); 948 } 949 950 static void 951 wdc_atapi_reset(struct ata_channel *chp, struct ata_xfer *xfer) 952 { 953 struct atac_softc *atac = chp->ch_atac; 954 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->c_drive]; 955 struct scsipi_xfer *sc_xfer = xfer->c_cmd; 956 957 wdccommandshort(chp, xfer->c_drive, ATAPI_SOFT_RESET); 958 drvp->state = 0; 959 if (wdc_wait_for_unbusy(chp, WDC_RESET_WAIT, AT_POLL) != 0) { 960 printf("%s:%d:%d: reset failed\n", 961 atac->atac_dev.dv_xname, chp->ch_channel, 962 xfer->c_drive); 963 sc_xfer->error = XS_SELTIMEOUT; 964 } 965 wdc_atapi_done(chp, xfer); 966 return; 967 } 968 969 static void 970 wdc_atapi_polldsc(void *arg) 971 { 972 973 wdc_atapi_phase_complete(arg); 974 } 975
Indexes created Mon Sep 22 21:09:42 GMT 2025