atapi_wdc.c revision 1.51
1 /* $NetBSD: atapi_wdc.c,v 1.51 2002/04/23 20:41:19 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. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.51 2002/04/23 20:41:19 bouyer Exp $"); 36 37 #ifndef WDCDEBUG 38 #define WDCDEBUG 39 #endif /* WDCDEBUG */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/file.h> 45 #include <sys/stat.h> 46 #include <sys/buf.h> 47 #include <sys/malloc.h> 48 #include <sys/device.h> 49 #include <sys/syslog.h> 50 #include <sys/proc.h> 51 #include <sys/dvdio.h> 52 53 #include <machine/intr.h> 54 #include <machine/bus.h> 55 56 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 57 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 58 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 59 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 60 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 61 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 62 63 #include <dev/ata/atareg.h> 64 #include <dev/ata/atavar.h> 65 #include <dev/ic/wdcreg.h> 66 #include <dev/ic/wdcvar.h> 67 68 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 69 70 #define DEBUG_INTR 0x01 71 #define DEBUG_XFERS 0x02 72 #define DEBUG_STATUS 0x04 73 #define DEBUG_FUNCS 0x08 74 #define DEBUG_PROBE 0x10 75 #ifdef WDCDEBUG 76 int wdcdebug_atapi_mask = 0; 77 #define WDCDEBUG_PRINT(args, level) \ 78 if (wdcdebug_atapi_mask & (level)) \ 79 printf args 80 #else 81 #define WDCDEBUG_PRINT(args, level) 82 #endif 83 84 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 85 int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, 86 struct ataparams *)); 87 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 88 void wdc_atapi_minphys __P((struct buf *bp)); 89 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 90 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 91 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 92 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 93 void wdc_atapi_phase_complete __P((struct wdc_xfer *)); 94 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 95 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 96 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 97 scsipi_adapter_req_t, void *)); 98 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 99 void wdc_atapi_polldsc __P((void *arg)); 100 101 #define MAX_SIZE MAXPHYS 102 103 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(chp) 113 struct channel_softc *chp; 114 { 115 struct wdc_softc *wdc = chp->wdc; 116 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 117 struct scsipi_channel *chan = &chp->ch_atapi_channel; 118 119 /* 120 * Fill in the scsipi_adapter. 121 */ 122 adapt->adapt_dev = &wdc->sc_dev; 123 adapt->adapt_nchannels = wdc->nchannels; 124 adapt->adapt_request = wdc_atapi_scsipi_request; 125 adapt->adapt_minphys = wdc_atapi_minphys; 126 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 127 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 128 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 129 130 /* 131 * Fill in the scsipi_channel. 132 */ 133 memset(chan, 0, sizeof(*chan)); 134 chan->chan_adapter = adapt; 135 chan->chan_bustype = &wdc_atapi_bustype; 136 chan->chan_channel = chp->channel; 137 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 138 chan->chan_openings = 1; 139 chan->chan_max_periph = 1; 140 chan->chan_ntargets = 2; 141 chan->chan_nluns = 1; 142 143 chp->atapibus = config_found(&wdc->sc_dev, chan, atapiprint); 144 } 145 146 void 147 wdc_atapi_minphys(bp) 148 struct buf *bp; 149 { 150 151 if (bp->b_bcount > MAX_SIZE) 152 bp->b_bcount = MAX_SIZE; 153 minphys(bp); 154 } 155 156 /* 157 * Kill off all pending xfers for a periph. 158 * 159 * Must be called at splbio(). 160 */ 161 void 162 wdc_atapi_kill_pending(periph) 163 struct scsipi_periph *periph; 164 { 165 struct wdc_softc *wdc = 166 (void *)periph->periph_channel->chan_adapter->adapt_dev; 167 struct channel_softc *chp = 168 wdc->channels[periph->periph_channel->chan_channel]; 169 170 wdc_kill_pending(chp); 171 } 172 173 void 174 wdc_atapi_kill_xfer(chp, xfer) 175 struct channel_softc *chp; 176 struct wdc_xfer *xfer; 177 { 178 struct scsipi_xfer *sc_xfer = xfer->cmd; 179 180 callout_stop(&chp->ch_callout); 181 /* remove this command from xfer queue */ 182 wdc_free_xfer(chp, xfer); 183 sc_xfer->error = XS_DRIVER_STUFFUP; 184 scsipi_done(sc_xfer); 185 } 186 187 int 188 wdc_atapi_get_params(chan, drive, flags, id) 189 struct scsipi_channel *chan; 190 int drive, flags; 191 struct ataparams *id; 192 { 193 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 194 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 195 struct wdc_command wdc_c; 196 197 /* if no ATAPI device detected at wdc attach time, skip */ 198 /* 199 * XXX this will break scsireprobe if this is of any interest for 200 * ATAPI devices one day. 201 */ 202 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 203 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 204 drive), DEBUG_PROBE); 205 return -1; 206 } 207 memset(&wdc_c, 0, sizeof(struct wdc_command)); 208 wdc_c.r_command = ATAPI_SOFT_RESET; 209 wdc_c.r_st_bmask = 0; 210 wdc_c.r_st_pmask = 0; 211 wdc_c.flags = AT_POLL; 212 wdc_c.timeout = WDC_RESET_WAIT; 213 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 214 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 215 " drive %s:%d:%d: driver failed\n", 216 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 217 panic("wdc_atapi_get_params"); 218 } 219 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 220 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 221 "failed for drive %s:%d:%d: error 0x%x\n", 222 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 223 wdc_c.r_error), DEBUG_PROBE); 224 return -1; 225 } 226 chp->ch_drive[drive].state = 0; 227 228 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 229 230 /* Some ATAPI devices need a bit more time after software reset. */ 231 delay(5000); 232 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 233 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 234 "failed for drive %s:%d:%d: error 0x%x\n", 235 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 236 wdc_c.r_error), DEBUG_PROBE); 237 return -1; 238 } 239 return 0; 240 } 241 242 void 243 wdc_atapi_probe_device(sc, target) 244 struct atapibus_softc *sc; 245 int target; 246 { 247 struct scsipi_channel *chan = sc->sc_channel; 248 struct scsipi_periph *periph; 249 struct ataparams ids; 250 struct ataparams *id = &ids; 251 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 252 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 253 struct ata_drive_datas *drvp = &chp->ch_drive[target]; 254 struct scsipibus_attach_args sa; 255 char serial_number[21], model[41], firmware_revision[9]; 256 257 /* skip if already attached */ 258 if (scsipi_lookup_periph(chan, target, 0) != NULL) 259 return; 260 261 if (wdc_atapi_get_params(chan, target, 262 XS_CTL_POLL|XS_CTL_NOSLEEP, 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; 280 281 #ifdef SCSIPI_DEBUG 282 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 283 SCSIPI_DEBUG_TARGET == target) 284 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 285 #endif 286 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 287 if (id->atap_config & ATAPI_CFG_REMOV) 288 periph->periph_flags |= PERIPH_REMOVABLE; 289 if (periph->periph_type == T_SEQUENTIAL) 290 drvp->drive_flags |= DRIVE_ATAPIST; 291 292 sa.sa_periph = periph; 293 sa.sa_inqbuf.type = ATAPI_CFG_TYPE(id->atap_config); 294 sa.sa_inqbuf.removable = id->atap_config & ATAPI_CFG_REMOV ? 295 T_REMOV : T_FIXED; 296 scsipi_strvis(model, 40, id->atap_model, 40); 297 scsipi_strvis(serial_number, 20, id->atap_serial, 20); 298 scsipi_strvis(firmware_revision, 8, id->atap_revision, 8); 299 sa.sa_inqbuf.vendor = model; 300 sa.sa_inqbuf.product = serial_number; 301 sa.sa_inqbuf.revision = firmware_revision; 302 303 /* 304 * Determine the operating mode capabilities of the device. 305 */ 306 if ((id->atap_config & ATAPI_CFG_CMD_MASK) == ATAPI_CFG_CMD_16) 307 periph->periph_cap |= PERIPH_CAP_CMD16; 308 /* XXX This is gross. */ 309 periph->periph_cap |= (id->atap_config & ATAPI_CFG_DRQ_MASK); 310 311 drvp->drv_softc = atapi_probe_device(sc, target, periph, &sa); 312 313 if (drvp->drv_softc) 314 wdc_probe_caps(drvp); 315 } 316 } 317 318 void 319 wdc_atapi_scsipi_request(chan, req, arg) 320 struct scsipi_channel *chan; 321 scsipi_adapter_req_t req; 322 void *arg; 323 { 324 struct scsipi_adapter *adapt = chan->chan_adapter; 325 struct scsipi_periph *periph; 326 struct scsipi_xfer *sc_xfer; 327 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 328 struct wdc_xfer *xfer; 329 int channel = chan->chan_channel; 330 int drive, s; 331 332 switch (req) { 333 case ADAPTER_REQ_RUN_XFER: 334 sc_xfer = arg; 335 periph = sc_xfer->xs_periph; 336 drive = periph->periph_target; 337 338 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 339 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 340 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 341 sc_xfer->error = XS_DRIVER_STUFFUP; 342 scsipi_done(sc_xfer); 343 return; 344 } 345 346 xfer = wdc_get_xfer(WDC_NOSLEEP); 347 if (xfer == NULL) { 348 sc_xfer->error = XS_RESOURCE_SHORTAGE; 349 scsipi_done(sc_xfer); 350 return; 351 } 352 353 if (sc_xfer->xs_control & XS_CTL_POLL) 354 xfer->c_flags |= C_POLL; 355 xfer->drive = drive; 356 xfer->c_flags |= C_ATAPI; 357 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 358 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 359 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 360 /* 361 * DVD authentication commands must always be done in 362 * PIO mode. 363 */ 364 xfer->c_flags |= C_FORCEPIO; 365 } 366 xfer->cmd = sc_xfer; 367 xfer->databuf = sc_xfer->data; 368 xfer->c_bcount = sc_xfer->datalen; 369 xfer->c_start = wdc_atapi_start; 370 xfer->c_intr = wdc_atapi_intr; 371 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 372 xfer->c_dscpoll = 0; 373 s = splbio(); 374 wdc_exec_xfer(wdc->channels[channel], xfer); 375 #ifdef DIAGNOSTIC 376 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 377 (sc_xfer->xs_status & XS_STS_DONE) == 0) 378 panic("wdc_atapi_scsipi_request: polled command " 379 "not done"); 380 #endif 381 splx(s); 382 return; 383 384 default: 385 /* Not supported, nothing to do. */ 386 ; 387 } 388 } 389 390 void 391 wdc_atapi_start(chp, xfer) 392 struct channel_softc *chp; 393 struct wdc_xfer *xfer; 394 { 395 struct scsipi_xfer *sc_xfer = xfer->cmd; 396 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 397 398 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 399 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 400 sc_xfer->xs_control), DEBUG_XFERS); 401 /* Adjust C_DMA, it may have changed if we are requesting sense */ 402 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 403 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 404 if (drvp->n_xfers <= NXFER) 405 drvp->n_xfers++; 406 xfer->c_flags |= C_DMA; 407 } else { 408 xfer->c_flags &= ~C_DMA; 409 } 410 /* start timeout machinery */ 411 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 412 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 413 wdctimeout, chp); 414 /* Do control operations specially. */ 415 if (drvp->state < READY) { 416 if (drvp->state != RESET) { 417 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 418 chp->wdc->sc_dev.dv_xname, chp->channel, 419 xfer->drive, drvp->state); 420 panic("wdc_atapi_start: bad state"); 421 } 422 drvp->state = PIOMODE; 423 wdc_atapi_ctrl(chp, xfer, 0); 424 return; 425 } 426 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 427 WDSD_IBM | (xfer->drive << 4)); 428 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 429 printf("wdc_atapi_start: not ready, st = %02x\n", 430 chp->ch_status); 431 sc_xfer->error = XS_TIMEOUT; 432 wdc_atapi_reset(chp, xfer); 433 return; 434 } 435 436 /* 437 * Even with WDCS_ERR, the device should accept a command packet 438 * Limit length to what can be stuffed into the cylinder register 439 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 440 * but not all devices do that and it's not obvious from the 441 * ATAPI spec that that behaviour should be expected. If more 442 * data is necessary, multiple data transfer phases will be done. 443 */ 444 445 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 446 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 447 0, 0, 0, 448 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 449 450 /* 451 * If there is no interrupt for CMD input, busy-wait for it (done in 452 * the interrupt routine. If it is a polled command, call the interrupt 453 * routine until command is done. 454 */ 455 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 456 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 457 /* Wait for at last 400ns for status bit to be valid */ 458 DELAY(1); 459 if (chp->ch_flags & WDCF_DMA_WAIT) { 460 wdc_dmawait(chp, xfer, sc_xfer->timeout); 461 chp->ch_flags &= ~WDCF_DMA_WAIT; 462 } 463 wdc_atapi_intr(chp, xfer, 0); 464 } else { 465 chp->ch_flags |= WDCF_IRQ_WAIT; 466 } 467 if (sc_xfer->xs_control & XS_CTL_POLL) { 468 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 469 /* Wait for at last 400ns for status bit to be valid */ 470 DELAY(1); 471 wdc_atapi_intr(chp, xfer, 0); 472 } 473 } 474 } 475 476 int 477 wdc_atapi_intr(chp, xfer, irq) 478 struct channel_softc *chp; 479 struct wdc_xfer *xfer; 480 int irq; 481 { 482 struct scsipi_xfer *sc_xfer = xfer->cmd; 483 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 484 int len, phase, i, retries=0; 485 int ire; 486 int dma_flags = 0; 487 void *cmd; 488 489 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 490 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 491 492 /* Is it not a transfer, but a control operation? */ 493 if (drvp->state < READY) { 494 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 495 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 496 drvp->state); 497 panic("wdc_atapi_intr: bad state\n"); 498 } 499 /* 500 * If we missed an interrupt in a PIO transfer, reset and restart. 501 * Don't try to continue transfer, we may have missed cycles. 502 */ 503 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 504 sc_xfer->error = XS_TIMEOUT; 505 wdc_atapi_reset(chp, xfer); 506 return 1; 507 } 508 509 /* Ack interrupt done in wait_for_unbusy */ 510 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 511 WDSD_IBM | (xfer->drive << 4)); 512 if (wait_for_unbusy(chp, 513 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 514 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 515 return 0; /* IRQ was not for us */ 516 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 517 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 518 xfer->c_bcount, xfer->c_skip); 519 if (xfer->c_flags & C_DMA) { 520 ata_dmaerr(drvp); 521 } 522 sc_xfer->error = XS_TIMEOUT; 523 wdc_atapi_reset(chp, xfer); 524 return 1; 525 } 526 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 527 chp->wdc->irqack(chp); 528 529 /* 530 * If we missed an IRQ and were using DMA, flag it as a DMA error 531 * and reset device. 532 */ 533 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 534 ata_dmaerr(drvp); 535 sc_xfer->error = XS_RESET; 536 wdc_atapi_reset(chp, xfer); 537 return (1); 538 } 539 /* 540 * if the request sense command was aborted, report the short sense 541 * previously recorded, else continue normal processing 542 */ 543 544 if (xfer->c_flags & C_DMA) 545 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 546 ? WDC_DMA_READ : 0; 547 again: 548 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 549 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 550 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 551 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 552 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 553 "ire 0x%x :", xfer->c_bcount, 554 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 555 556 switch (phase) { 557 case PHASE_CMDOUT: 558 cmd = sc_xfer->cmd; 559 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 560 /* Init the DMA channel if necessary */ 561 if (xfer->c_flags & C_DMA) { 562 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 563 chp->channel, xfer->drive, 564 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 565 sc_xfer->error = XS_DRIVER_STUFFUP; 566 break; 567 } 568 } 569 /* send packet command */ 570 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 571 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 572 if (drvp->drive_flags & DRIVE_CAP32) { 573 bus_space_write_multi_4(chp->data32iot, 574 chp->data32ioh, 0, 575 (u_int32_t *)cmd, 576 sc_xfer->cmdlen >> 2); 577 } else { 578 bus_space_write_multi_2(chp->cmd_iot, 579 chp->cmd_ioh, wd_data, 580 (u_int16_t *)cmd, 581 sc_xfer->cmdlen >> 1); 582 } 583 } else { 584 if (drvp->drive_flags & DRIVE_CAP32) { 585 bus_space_write_multi_stream_4(chp->data32iot, 586 chp->data32ioh, 0, 587 (u_int32_t *)cmd, 588 sc_xfer->cmdlen >> 2); 589 } else { 590 bus_space_write_multi_stream_2(chp->cmd_iot, 591 chp->cmd_ioh, wd_data, 592 (u_int16_t *)cmd, 593 sc_xfer->cmdlen >> 1); 594 } 595 } 596 /* Start the DMA channel if necessary */ 597 if (xfer->c_flags & C_DMA) { 598 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 599 chp->channel, xfer->drive); 600 chp->ch_flags |= WDCF_DMA_WAIT; 601 } 602 603 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 604 chp->ch_flags |= WDCF_IRQ_WAIT; 605 } 606 return 1; 607 608 case PHASE_DATAOUT: 609 /* write data */ 610 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 611 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 612 (xfer->c_flags & C_DMA) != 0) { 613 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 614 if (xfer->c_flags & C_DMA) { 615 ata_dmaerr(drvp); 616 } 617 sc_xfer->error = XS_TIMEOUT; 618 wdc_atapi_reset(chp, xfer); 619 return 1; 620 } 621 if (xfer->c_bcount < len) { 622 printf("wdc_atapi_intr: warning: write only " 623 "%d of %d requested bytes\n", xfer->c_bcount, len); 624 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 625 bus_space_write_multi_2(chp->cmd_iot, 626 chp->cmd_ioh, wd_data, 627 (u_int16_t *)((char *)xfer->databuf + 628 xfer->c_skip), 629 xfer->c_bcount >> 1); 630 } else { 631 bus_space_write_multi_stream_2(chp->cmd_iot, 632 chp->cmd_ioh, wd_data, 633 (u_int16_t *)((char *)xfer->databuf + 634 xfer->c_skip), 635 xfer->c_bcount >> 1); 636 } 637 for (i = xfer->c_bcount; i < len; i += 2) 638 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 639 wd_data, 0); 640 xfer->c_skip += xfer->c_bcount; 641 xfer->c_bcount = 0; 642 } else { 643 if (drvp->drive_flags & DRIVE_CAP32) { 644 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 645 bus_space_write_multi_4(chp->data32iot, 646 chp->data32ioh, 0, 647 (u_int32_t *)((char *)xfer->databuf + 648 xfer->c_skip), 649 len >> 2); 650 else 651 bus_space_write_multi_stream_4(chp->data32iot, 652 chp->data32ioh, wd_data, 653 (u_int32_t *)((char *)xfer->databuf + 654 xfer->c_skip), 655 len >> 2); 656 657 xfer->c_skip += len & 0xfffffffc; 658 xfer->c_bcount -= len & 0xfffffffc; 659 len = len & 0x03; 660 } 661 if (len > 0) { 662 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 663 bus_space_write_multi_2(chp->cmd_iot, 664 chp->cmd_ioh, wd_data, 665 (u_int16_t *)((char *)xfer->databuf + 666 xfer->c_skip), 667 len >> 1); 668 else 669 bus_space_write_multi_stream_2(chp->cmd_iot, 670 chp->cmd_ioh, wd_data, 671 (u_int16_t *)((char *)xfer->databuf + 672 xfer->c_skip), 673 len >> 1); 674 xfer->c_skip += len; 675 xfer->c_bcount -= len; 676 } 677 } 678 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 679 chp->ch_flags |= WDCF_IRQ_WAIT; 680 } 681 return 1; 682 683 case PHASE_DATAIN: 684 /* Read data */ 685 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 686 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 687 (xfer->c_flags & C_DMA) != 0) { 688 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 689 if (xfer->c_flags & C_DMA) { 690 ata_dmaerr(drvp); 691 } 692 sc_xfer->error = XS_TIMEOUT; 693 wdc_atapi_reset(chp, xfer); 694 return 1; 695 } 696 if (xfer->c_bcount < len) { 697 printf("wdc_atapi_intr: warning: reading only " 698 "%d of %d bytes\n", xfer->c_bcount, len); 699 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 700 bus_space_read_multi_2(chp->cmd_iot, 701 chp->cmd_ioh, wd_data, 702 (u_int16_t *)((char *)xfer->databuf + 703 xfer->c_skip), 704 xfer->c_bcount >> 1); 705 } else { 706 bus_space_read_multi_stream_2(chp->cmd_iot, 707 chp->cmd_ioh, wd_data, 708 (u_int16_t *)((char *)xfer->databuf + 709 xfer->c_skip), 710 xfer->c_bcount >> 1); 711 } 712 wdcbit_bucket(chp, len - xfer->c_bcount); 713 xfer->c_skip += xfer->c_bcount; 714 xfer->c_bcount = 0; 715 } else { 716 if (drvp->drive_flags & DRIVE_CAP32) { 717 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 718 bus_space_read_multi_4(chp->data32iot, 719 chp->data32ioh, 0, 720 (u_int32_t *)((char *)xfer->databuf + 721 xfer->c_skip), 722 len >> 2); 723 else 724 bus_space_read_multi_stream_4(chp->data32iot, 725 chp->data32ioh, wd_data, 726 (u_int32_t *)((char *)xfer->databuf + 727 xfer->c_skip), 728 len >> 2); 729 730 xfer->c_skip += len & 0xfffffffc; 731 xfer->c_bcount -= len & 0xfffffffc; 732 len = len & 0x03; 733 } 734 if (len > 0) { 735 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 736 bus_space_read_multi_2(chp->cmd_iot, 737 chp->cmd_ioh, wd_data, 738 (u_int16_t *)((char *)xfer->databuf + 739 xfer->c_skip), 740 len >> 1); 741 else 742 bus_space_read_multi_stream_2(chp->cmd_iot, 743 chp->cmd_ioh, wd_data, 744 (u_int16_t *)((char *)xfer->databuf + 745 xfer->c_skip), 746 len >> 1); 747 xfer->c_skip += len; 748 xfer->c_bcount -=len; 749 } 750 } 751 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 752 chp->ch_flags |= WDCF_IRQ_WAIT; 753 } 754 return 1; 755 756 case PHASE_ABORTED: 757 case PHASE_COMPLETED: 758 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 759 if (xfer->c_flags & C_DMA) { 760 xfer->c_bcount -= sc_xfer->datalen; 761 } 762 sc_xfer->resid = xfer->c_bcount; 763 wdc_atapi_phase_complete(xfer); 764 return(1); 765 766 default: 767 if (++retries<500) { 768 DELAY(100); 769 chp->ch_status = bus_space_read_1(chp->cmd_iot, 770 chp->cmd_ioh, wd_status); 771 chp->ch_error = bus_space_read_1(chp->cmd_iot, 772 chp->cmd_ioh, wd_error); 773 goto again; 774 } 775 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 776 if (chp->ch_status & WDCS_ERR) { 777 sc_xfer->error = XS_SHORTSENSE; 778 sc_xfer->sense.atapi_sense = chp->ch_error; 779 } else { 780 if (xfer->c_flags & C_DMA) { 781 ata_dmaerr(drvp); 782 } 783 sc_xfer->error = XS_RESET; 784 wdc_atapi_reset(chp, xfer); 785 return (1); 786 } 787 } 788 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 789 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 790 DEBUG_INTR); 791 wdc_atapi_done(chp, xfer); 792 return (1); 793 } 794 795 int 796 wdc_atapi_ctrl(chp, xfer, irq) 797 struct channel_softc *chp; 798 struct wdc_xfer *xfer; 799 int irq; 800 { 801 struct scsipi_xfer *sc_xfer = xfer->cmd; 802 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 803 char *errstring = NULL; 804 int delay = (irq == 0) ? ATAPI_DELAY : 0; 805 806 /* Ack interrupt done in wait_for_unbusy */ 807 again: 808 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 809 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 810 DEBUG_INTR | DEBUG_FUNCS); 811 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 812 WDSD_IBM | (xfer->drive << 4)); 813 switch (drvp->state) { 814 case PIOMODE: 815 /* Don't try to set mode if controller can't be adjusted */ 816 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 817 goto ready; 818 /* Also don't try if the drive didn't report its mode */ 819 if ((drvp->drive_flags & DRIVE_MODE) == 0) 820 goto ready; 821 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 822 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 823 drvp->state = PIOMODE_WAIT; 824 break; 825 case PIOMODE_WAIT: 826 errstring = "piomode"; 827 if (wait_for_unbusy(chp, delay)) 828 goto timeout; 829 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 830 chp->wdc->irqack(chp); 831 if (chp->ch_status & WDCS_ERR) { 832 if (chp->ch_error == WDCE_ABRT) { 833 /* 834 * some ATAPI drives rejects pio settings. 835 * all we can do here is fall back to PIO 0 836 */ 837 drvp->drive_flags &= ~DRIVE_MODE; 838 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 839 drvp->PIO_mode = 0; 840 drvp->DMA_mode = 0; 841 printf("%s:%d:%d: pio setting rejected, " 842 "falling back to PIO mode 0\n", 843 chp->wdc->sc_dev.dv_xname, 844 chp->channel, xfer->drive); 845 chp->wdc->set_modes(chp); 846 goto ready; 847 } 848 goto error; 849 } 850 /* fall through */ 851 852 case DMAMODE: 853 if (drvp->drive_flags & DRIVE_UDMA) { 854 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 855 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 856 } else if (drvp->drive_flags & DRIVE_DMA) { 857 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 858 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 859 } else { 860 goto ready; 861 } 862 drvp->state = DMAMODE_WAIT; 863 break; 864 case DMAMODE_WAIT: 865 errstring = "dmamode"; 866 if (wait_for_unbusy(chp, delay)) 867 goto timeout; 868 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 869 chp->wdc->irqack(chp); 870 if (chp->ch_status & WDCS_ERR) 871 goto error; 872 /* fall through */ 873 874 case READY: 875 ready: 876 drvp->state = READY; 877 xfer->c_intr = wdc_atapi_intr; 878 callout_stop(&chp->ch_callout); 879 wdc_atapi_start(chp, xfer); 880 return 1; 881 } 882 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 883 chp->ch_flags |= WDCF_IRQ_WAIT; 884 xfer->c_intr = wdc_atapi_ctrl; 885 } else { 886 goto again; 887 } 888 return 1; 889 890 timeout: 891 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 892 return 0; /* IRQ was not for us */ 893 } 894 printf("%s:%d:%d: %s timed out\n", 895 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 896 sc_xfer->error = XS_TIMEOUT; 897 wdc_atapi_reset(chp, xfer); 898 return 1; 899 error: 900 printf("%s:%d:%d: %s ", 901 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 902 errstring); 903 printf("error (0x%x)\n", chp->ch_error); 904 sc_xfer->error = XS_SHORTSENSE; 905 sc_xfer->sense.atapi_sense = chp->ch_error; 906 wdc_atapi_reset(chp, xfer); 907 return 1; 908 } 909 910 void 911 wdc_atapi_phase_complete(xfer) 912 struct wdc_xfer *xfer; 913 { 914 struct channel_softc *chp = xfer->chp; 915 struct scsipi_xfer *sc_xfer = xfer->cmd; 916 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 917 918 /* wait for DSC if needed */ 919 if (drvp->drive_flags & DRIVE_ATAPIST) { 920 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 921 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 922 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 923 if (cold) { 924 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 925 sc_xfer->timeout)) { 926 printf("%s:%d:%d: wait_for_dsc failed\n", 927 chp->wdc->sc_dev.dv_xname, chp->channel, 928 xfer->drive); 929 sc_xfer->error = XS_TIMEOUT; 930 wdc_atapi_reset(chp, xfer); 931 return; 932 } 933 } else { 934 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 935 /* 10ms not enouth, try again in 1 tick */ 936 if (xfer->c_dscpoll++ > 937 mstohz(sc_xfer->timeout)) { 938 printf("%s:%d:%d: wait_for_dsc " 939 "failed\n", 940 chp->wdc->sc_dev.dv_xname, 941 chp->channel, xfer->drive); 942 sc_xfer->error = XS_TIMEOUT; 943 wdc_atapi_reset(chp, xfer); 944 return; 945 } 946 callout_reset(&chp->ch_callout, 1, 947 wdc_atapi_polldsc, xfer); 948 return; 949 } 950 } 951 } 952 953 /* 954 * Some drive occasionally set WDCS_ERR with 955 * "ATA illegal length indication" in the error 956 * register. If we read some data the sense is valid 957 * anyway, so don't report the error. 958 */ 959 if (chp->ch_status & WDCS_ERR && 960 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 961 sc_xfer->resid == sc_xfer->datalen)) { 962 /* save the short sense */ 963 sc_xfer->error = XS_SHORTSENSE; 964 sc_xfer->sense.atapi_sense = chp->ch_error; 965 if ((sc_xfer->xs_periph->periph_quirks & 966 PQUIRK_NOSENSE) == 0) { 967 /* ask scsipi to send a REQUEST_SENSE */ 968 sc_xfer->error = XS_BUSY; 969 sc_xfer->status = SCSI_CHECK; 970 } else if (chp->wdc->dma_status & 971 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 972 ata_dmaerr(drvp); 973 sc_xfer->error = XS_RESET; 974 wdc_atapi_reset(chp, xfer); 975 return; 976 } 977 } 978 if (xfer->c_bcount != 0) { 979 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 980 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 981 } 982 #ifdef DIAGNOSTIC 983 if (xfer->c_bcount < 0) { 984 printf("wdc_atapi_intr warning: bcount value " 985 "is %d after io\n", xfer->c_bcount); 986 } 987 #endif 988 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 989 "error 0x%x sense 0x%x\n", sc_xfer->error, 990 sc_xfer->sense.atapi_sense), DEBUG_INTR); 991 wdc_atapi_done(chp, xfer); 992 } 993 994 void 995 wdc_atapi_done(chp, xfer) 996 struct channel_softc *chp; 997 struct wdc_xfer *xfer; 998 { 999 struct scsipi_xfer *sc_xfer = xfer->cmd; 1000 1001 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 1002 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 1003 (u_int)xfer->c_flags), DEBUG_XFERS); 1004 callout_stop(&chp->ch_callout); 1005 /* remove this command from xfer queue */ 1006 wdc_free_xfer(chp, xfer); 1007 1008 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 1009 scsipi_done(sc_xfer); 1010 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 1011 chp->ch_flags), DEBUG_XFERS); 1012 wdcstart(chp); 1013 } 1014 1015 void 1016 wdc_atapi_reset(chp, xfer) 1017 struct channel_softc *chp; 1018 struct wdc_xfer *xfer; 1019 { 1020 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1021 struct scsipi_xfer *sc_xfer = xfer->cmd; 1022 1023 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1024 drvp->state = 0; 1025 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1026 printf("%s:%d:%d: reset failed\n", 1027 chp->wdc->sc_dev.dv_xname, chp->channel, 1028 xfer->drive); 1029 sc_xfer->error = XS_SELTIMEOUT; 1030 } 1031 wdc_atapi_done(chp, xfer); 1032 return; 1033 } 1034 1035 void 1036 wdc_atapi_polldsc(arg) 1037 void *arg; 1038 { 1039 wdc_atapi_phase_complete(arg); 1040 } 1041
Indexes created Mon Sep 22 13:09:51 GMT 2025