atapi_wdc.c revision 1.50
1 /* $NetBSD: atapi_wdc.c,v 1.50 2002/04/05 18:27:56 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 the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: atapi_wdc.c,v 1.50 2002/04/05 18:27:56 bouyer Exp $"); 37 38 #ifndef WDCDEBUG 39 #define WDCDEBUG 40 #endif /* WDCDEBUG */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/file.h> 46 #include <sys/stat.h> 47 #include <sys/buf.h> 48 #include <sys/malloc.h> 49 #include <sys/device.h> 50 #include <sys/syslog.h> 51 #include <sys/proc.h> 52 #include <sys/dvdio.h> 53 54 #include <machine/intr.h> 55 #include <machine/bus.h> 56 57 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 58 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 59 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 60 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 61 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 62 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 63 64 #include <dev/ata/atareg.h> 65 #include <dev/ata/atavar.h> 66 #include <dev/ic/wdcreg.h> 67 #include <dev/ic/wdcvar.h> 68 69 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 70 71 #define DEBUG_INTR 0x01 72 #define DEBUG_XFERS 0x02 73 #define DEBUG_STATUS 0x04 74 #define DEBUG_FUNCS 0x08 75 #define DEBUG_PROBE 0x10 76 #ifdef WDCDEBUG 77 int wdcdebug_atapi_mask = 0; 78 #define WDCDEBUG_PRINT(args, level) \ 79 if (wdcdebug_atapi_mask & (level)) \ 80 printf args 81 #else 82 #define WDCDEBUG_PRINT(args, level) 83 #endif 84 85 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 86 int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, 87 struct ataparams *)); 88 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 89 void wdc_atapi_minphys __P((struct buf *bp)); 90 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 91 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 92 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 93 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 94 void wdc_atapi_phase_complete __P((struct wdc_xfer *)); 95 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 96 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 97 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 98 scsipi_adapter_req_t, void *)); 99 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 100 void wdc_atapi_polldsc __P((void *arg)); 101 102 #define MAX_SIZE MAXPHYS 103 104 const struct scsipi_bustype wdc_atapi_bustype = { 105 SCSIPI_BUSTYPE_ATAPI, 106 atapi_scsipi_cmd, 107 atapi_interpret_sense, 108 atapi_print_addr, 109 wdc_atapi_kill_pending, 110 }; 111 112 void 113 wdc_atapibus_attach(chp) 114 struct channel_softc *chp; 115 { 116 struct wdc_softc *wdc = chp->wdc; 117 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 118 struct scsipi_channel *chan = &chp->ch_atapi_channel; 119 120 /* 121 * Fill in the scsipi_adapter. 122 */ 123 adapt->adapt_dev = &wdc->sc_dev; 124 adapt->adapt_nchannels = wdc->nchannels; 125 adapt->adapt_request = wdc_atapi_scsipi_request; 126 adapt->adapt_minphys = wdc_atapi_minphys; 127 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 128 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 129 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 130 131 /* 132 * Fill in the scsipi_channel. 133 */ 134 memset(chan, 0, sizeof(*chan)); 135 chan->chan_adapter = adapt; 136 chan->chan_bustype = &wdc_atapi_bustype; 137 chan->chan_channel = chp->channel; 138 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 139 chan->chan_openings = 1; 140 chan->chan_max_periph = 1; 141 chan->chan_ntargets = 2; 142 chan->chan_nluns = 1; 143 144 chp->atapibus = config_found(&wdc->sc_dev, chan, atapiprint); 145 } 146 147 void 148 wdc_atapi_minphys(bp) 149 struct buf *bp; 150 { 151 152 if (bp->b_bcount > MAX_SIZE) 153 bp->b_bcount = MAX_SIZE; 154 minphys(bp); 155 } 156 157 /* 158 * Kill off all pending xfers for a periph. 159 * 160 * Must be called at splbio(). 161 */ 162 void 163 wdc_atapi_kill_pending(periph) 164 struct scsipi_periph *periph; 165 { 166 struct wdc_softc *wdc = 167 (void *)periph->periph_channel->chan_adapter->adapt_dev; 168 struct channel_softc *chp = 169 wdc->channels[periph->periph_channel->chan_channel]; 170 171 wdc_kill_pending(chp); 172 } 173 174 void 175 wdc_atapi_kill_xfer(chp, xfer) 176 struct channel_softc *chp; 177 struct wdc_xfer *xfer; 178 { 179 struct scsipi_xfer *sc_xfer = xfer->cmd; 180 181 callout_stop(&chp->ch_callout); 182 /* remove this command from xfer queue */ 183 wdc_free_xfer(chp, xfer); 184 sc_xfer->error = XS_DRIVER_STUFFUP; 185 scsipi_done(sc_xfer); 186 } 187 188 int 189 wdc_atapi_get_params(chan, drive, flags, id) 190 struct scsipi_channel *chan; 191 int drive, flags; 192 struct ataparams *id; 193 { 194 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 195 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 196 struct wdc_command wdc_c; 197 198 /* if no ATAPI device detected at wdc attach time, skip */ 199 /* 200 * XXX this will break scsireprobe if this is of any interest for 201 * ATAPI devices one day. 202 */ 203 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 204 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 205 drive), DEBUG_PROBE); 206 return -1; 207 } 208 memset(&wdc_c, 0, sizeof(struct wdc_command)); 209 wdc_c.r_command = ATAPI_SOFT_RESET; 210 wdc_c.r_st_bmask = 0; 211 wdc_c.r_st_pmask = 0; 212 wdc_c.flags = AT_POLL; 213 wdc_c.timeout = WDC_RESET_WAIT; 214 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 215 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 216 " drive %s:%d:%d: driver failed\n", 217 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 218 panic("wdc_atapi_get_params"); 219 } 220 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 221 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 222 "failed for drive %s:%d:%d: error 0x%x\n", 223 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 224 wdc_c.r_error), DEBUG_PROBE); 225 return -1; 226 } 227 chp->ch_drive[drive].state = 0; 228 229 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 230 231 /* Some ATAPI devices need a bit more time after software reset. */ 232 delay(5000); 233 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 234 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 235 "failed for drive %s:%d:%d: error 0x%x\n", 236 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 237 wdc_c.r_error), DEBUG_PROBE); 238 return -1; 239 } 240 return 0; 241 } 242 243 void 244 wdc_atapi_probe_device(sc, target) 245 struct atapibus_softc *sc; 246 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 channel_softc *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, 263 XS_CTL_POLL|XS_CTL_NOSLEEP, id) == 0) { 264 #ifdef ATAPI_DEBUG_PROBE 265 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 266 sc->sc_dev.dv_xname, target, 267 id->atap_config & ATAPI_CFG_CMD_MASK, 268 id->atap_config & ATAPI_CFG_DRQ_MASK); 269 #endif 270 periph = scsipi_alloc_periph(M_NOWAIT); 271 if (periph == NULL) { 272 printf("%s: unable to allocate periph for drive %d\n", 273 sc->sc_dev.dv_xname, target); 274 return; 275 } 276 periph->periph_dev = NULL; 277 periph->periph_channel = chan; 278 periph->periph_switch = &atapi_probe_periphsw; 279 periph->periph_target = target; 280 periph->periph_lun = 0; 281 282 #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 } 317 } 318 319 void 320 wdc_atapi_scsipi_request(chan, req, arg) 321 struct scsipi_channel *chan; 322 scsipi_adapter_req_t req; 323 void *arg; 324 { 325 struct scsipi_adapter *adapt = chan->chan_adapter; 326 struct scsipi_periph *periph; 327 struct scsipi_xfer *sc_xfer; 328 struct wdc_softc *wdc = (void *)adapt->adapt_dev; 329 struct wdc_xfer *xfer; 330 int channel = chan->chan_channel; 331 int drive, s; 332 333 switch (req) { 334 case ADAPTER_REQ_RUN_XFER: 335 sc_xfer = arg; 336 periph = sc_xfer->xs_periph; 337 drive = periph->periph_target; 338 339 WDCDEBUG_PRINT(("wdc_atapi_scsipi_request %s:%d:%d\n", 340 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 341 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 342 sc_xfer->error = XS_DRIVER_STUFFUP; 343 scsipi_done(sc_xfer); 344 return; 345 } 346 347 xfer = wdc_get_xfer(WDC_NOSLEEP); 348 if (xfer == NULL) { 349 sc_xfer->error = XS_RESOURCE_SHORTAGE; 350 scsipi_done(sc_xfer); 351 return; 352 } 353 354 if (sc_xfer->xs_control & XS_CTL_POLL) 355 xfer->c_flags |= C_POLL; 356 xfer->drive = drive; 357 xfer->c_flags |= C_ATAPI; 358 if (sc_xfer->cmd->opcode == GPCMD_REPORT_KEY || 359 sc_xfer->cmd->opcode == GPCMD_SEND_KEY || 360 sc_xfer->cmd->opcode == GPCMD_READ_DVD_STRUCTURE) { 361 /* 362 * DVD authentication commands must always be done in 363 * PIO mode. 364 */ 365 xfer->c_flags |= C_FORCEPIO; 366 } 367 xfer->cmd = sc_xfer; 368 xfer->databuf = sc_xfer->data; 369 xfer->c_bcount = sc_xfer->datalen; 370 xfer->c_start = wdc_atapi_start; 371 xfer->c_intr = wdc_atapi_intr; 372 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 373 xfer->c_dscpoll = 0; 374 s = splbio(); 375 wdc_exec_xfer(wdc->channels[channel], xfer); 376 #ifdef DIAGNOSTIC 377 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 378 (sc_xfer->xs_status & XS_STS_DONE) == 0) 379 panic("wdc_atapi_scsipi_request: polled command " 380 "not done"); 381 #endif 382 splx(s); 383 return; 384 385 default: 386 /* Not supported, nothing to do. */ 387 ; 388 } 389 } 390 391 void 392 wdc_atapi_start(chp, xfer) 393 struct channel_softc *chp; 394 struct wdc_xfer *xfer; 395 { 396 struct scsipi_xfer *sc_xfer = xfer->cmd; 397 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 398 399 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 400 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 401 sc_xfer->xs_control), DEBUG_XFERS); 402 /* Adjust C_DMA, it may have changed if we are requesting sense */ 403 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 404 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 405 if (drvp->n_xfers <= NXFER) 406 drvp->n_xfers++; 407 xfer->c_flags |= C_DMA; 408 } else { 409 xfer->c_flags &= ~C_DMA; 410 } 411 /* start timeout machinery */ 412 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 413 callout_reset(&chp->ch_callout, mstohz(sc_xfer->timeout), 414 wdctimeout, chp); 415 /* Do control operations specially. */ 416 if (drvp->state < READY) { 417 if (drvp->state != RESET) { 418 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 419 chp->wdc->sc_dev.dv_xname, chp->channel, 420 xfer->drive, drvp->state); 421 panic("wdc_atapi_start: bad state"); 422 } 423 drvp->state = PIOMODE; 424 wdc_atapi_ctrl(chp, xfer, 0); 425 return; 426 } 427 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 428 WDSD_IBM | (xfer->drive << 4)); 429 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 430 printf("wdc_atapi_start: not ready, st = %02x\n", 431 chp->ch_status); 432 sc_xfer->error = XS_TIMEOUT; 433 wdc_atapi_reset(chp, xfer); 434 return; 435 } 436 437 /* 438 * Even with WDCS_ERR, the device should accept a command packet 439 * Limit length to what can be stuffed into the cylinder register 440 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 441 * but not all devices do that and it's not obvious from the 442 * ATAPI spec that that behaviour should be expected. If more 443 * data is necessary, multiple data transfer phases will be done. 444 */ 445 446 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 447 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 448 0, 0, 0, 449 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 450 451 /* 452 * If there is no interrupt for CMD input, busy-wait for it (done in 453 * the interrupt routine. If it is a polled command, call the interrupt 454 * routine until command is done. 455 */ 456 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 457 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 458 /* Wait for at last 400ns for status bit to be valid */ 459 DELAY(1); 460 if (chp->ch_flags & WDCF_DMA_WAIT) { 461 wdc_dmawait(chp, xfer, sc_xfer->timeout); 462 chp->ch_flags &= ~WDCF_DMA_WAIT; 463 } 464 wdc_atapi_intr(chp, xfer, 0); 465 } else { 466 chp->ch_flags |= WDCF_IRQ_WAIT; 467 } 468 if (sc_xfer->xs_control & XS_CTL_POLL) { 469 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 470 /* Wait for at last 400ns for status bit to be valid */ 471 DELAY(1); 472 wdc_atapi_intr(chp, xfer, 0); 473 } 474 } 475 } 476 477 int 478 wdc_atapi_intr(chp, xfer, irq) 479 struct channel_softc *chp; 480 struct wdc_xfer *xfer; 481 int irq; 482 { 483 struct scsipi_xfer *sc_xfer = xfer->cmd; 484 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 485 int len, phase, i, retries=0; 486 int ire; 487 int dma_flags = 0; 488 void *cmd; 489 490 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 491 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 492 493 /* Is it not a transfer, but a control operation? */ 494 if (drvp->state < READY) { 495 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 496 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 497 drvp->state); 498 panic("wdc_atapi_intr: bad state\n"); 499 } 500 /* 501 * If we missed an interrupt in a PIO transfer, reset and restart. 502 * Don't try to continue transfer, we may have missed cycles. 503 */ 504 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 505 sc_xfer->error = XS_TIMEOUT; 506 wdc_atapi_reset(chp, xfer); 507 return 1; 508 } 509 510 /* Ack interrupt done in wait_for_unbusy */ 511 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 512 WDSD_IBM | (xfer->drive << 4)); 513 if (wait_for_unbusy(chp, 514 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 515 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 516 return 0; /* IRQ was not for us */ 517 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 518 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 519 xfer->c_bcount, xfer->c_skip); 520 if (xfer->c_flags & C_DMA) { 521 ata_dmaerr(drvp); 522 } 523 sc_xfer->error = XS_TIMEOUT; 524 wdc_atapi_reset(chp, xfer); 525 return 1; 526 } 527 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 528 chp->wdc->irqack(chp); 529 530 /* 531 * If we missed an IRQ and were using DMA, flag it as a DMA error 532 * and reset device. 533 */ 534 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 535 ata_dmaerr(drvp); 536 sc_xfer->error = XS_RESET; 537 wdc_atapi_reset(chp, xfer); 538 return (1); 539 } 540 /* 541 * if the request sense command was aborted, report the short sense 542 * previously recorded, else continue normal processing 543 */ 544 545 if (xfer->c_flags & C_DMA) 546 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 547 ? WDC_DMA_READ : 0; 548 again: 549 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 550 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 551 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 552 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 553 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 554 "ire 0x%x :", xfer->c_bcount, 555 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 556 557 switch (phase) { 558 case PHASE_CMDOUT: 559 cmd = sc_xfer->cmd; 560 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 561 /* Init the DMA channel if necessary */ 562 if (xfer->c_flags & C_DMA) { 563 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 564 chp->channel, xfer->drive, 565 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 566 sc_xfer->error = XS_DRIVER_STUFFUP; 567 break; 568 } 569 } 570 /* send packet command */ 571 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 572 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 573 if (drvp->drive_flags & DRIVE_CAP32) { 574 bus_space_write_multi_4(chp->data32iot, 575 chp->data32ioh, 0, 576 (u_int32_t *)cmd, 577 sc_xfer->cmdlen >> 2); 578 } else { 579 bus_space_write_multi_2(chp->cmd_iot, 580 chp->cmd_ioh, wd_data, 581 (u_int16_t *)cmd, 582 sc_xfer->cmdlen >> 1); 583 } 584 } else { 585 if (drvp->drive_flags & DRIVE_CAP32) { 586 bus_space_write_multi_stream_4(chp->data32iot, 587 chp->data32ioh, 0, 588 (u_int32_t *)cmd, 589 sc_xfer->cmdlen >> 2); 590 } else { 591 bus_space_write_multi_stream_2(chp->cmd_iot, 592 chp->cmd_ioh, wd_data, 593 (u_int16_t *)cmd, 594 sc_xfer->cmdlen >> 1); 595 } 596 } 597 /* Start the DMA channel if necessary */ 598 if (xfer->c_flags & C_DMA) { 599 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 600 chp->channel, xfer->drive); 601 chp->ch_flags |= WDCF_DMA_WAIT; 602 } 603 604 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 605 chp->ch_flags |= WDCF_IRQ_WAIT; 606 } 607 return 1; 608 609 case PHASE_DATAOUT: 610 /* write data */ 611 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 612 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 613 (xfer->c_flags & C_DMA) != 0) { 614 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 615 if (xfer->c_flags & C_DMA) { 616 ata_dmaerr(drvp); 617 } 618 sc_xfer->error = XS_TIMEOUT; 619 wdc_atapi_reset(chp, xfer); 620 return 1; 621 } 622 if (xfer->c_bcount < len) { 623 printf("wdc_atapi_intr: warning: write only " 624 "%d of %d requested bytes\n", xfer->c_bcount, len); 625 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 626 bus_space_write_multi_2(chp->cmd_iot, 627 chp->cmd_ioh, wd_data, 628 (u_int16_t *)((char *)xfer->databuf + 629 xfer->c_skip), 630 xfer->c_bcount >> 1); 631 } else { 632 bus_space_write_multi_stream_2(chp->cmd_iot, 633 chp->cmd_ioh, wd_data, 634 (u_int16_t *)((char *)xfer->databuf + 635 xfer->c_skip), 636 xfer->c_bcount >> 1); 637 } 638 for (i = xfer->c_bcount; i < len; i += 2) 639 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 640 wd_data, 0); 641 xfer->c_skip += xfer->c_bcount; 642 xfer->c_bcount = 0; 643 } else { 644 if (drvp->drive_flags & DRIVE_CAP32) { 645 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 646 bus_space_write_multi_4(chp->data32iot, 647 chp->data32ioh, 0, 648 (u_int32_t *)((char *)xfer->databuf + 649 xfer->c_skip), 650 len >> 2); 651 else 652 bus_space_write_multi_stream_4(chp->data32iot, 653 chp->data32ioh, wd_data, 654 (u_int32_t *)((char *)xfer->databuf + 655 xfer->c_skip), 656 len >> 2); 657 658 xfer->c_skip += len & 0xfffffffc; 659 xfer->c_bcount -= len & 0xfffffffc; 660 len = len & 0x03; 661 } 662 if (len > 0) { 663 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 664 bus_space_write_multi_2(chp->cmd_iot, 665 chp->cmd_ioh, wd_data, 666 (u_int16_t *)((char *)xfer->databuf + 667 xfer->c_skip), 668 len >> 1); 669 else 670 bus_space_write_multi_stream_2(chp->cmd_iot, 671 chp->cmd_ioh, wd_data, 672 (u_int16_t *)((char *)xfer->databuf + 673 xfer->c_skip), 674 len >> 1); 675 xfer->c_skip += len; 676 xfer->c_bcount -= len; 677 } 678 } 679 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 680 chp->ch_flags |= WDCF_IRQ_WAIT; 681 } 682 return 1; 683 684 case PHASE_DATAIN: 685 /* Read data */ 686 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 687 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 688 (xfer->c_flags & C_DMA) != 0) { 689 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 690 if (xfer->c_flags & C_DMA) { 691 ata_dmaerr(drvp); 692 } 693 sc_xfer->error = XS_TIMEOUT; 694 wdc_atapi_reset(chp, xfer); 695 return 1; 696 } 697 if (xfer->c_bcount < len) { 698 printf("wdc_atapi_intr: warning: reading only " 699 "%d of %d bytes\n", xfer->c_bcount, len); 700 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 701 bus_space_read_multi_2(chp->cmd_iot, 702 chp->cmd_ioh, wd_data, 703 (u_int16_t *)((char *)xfer->databuf + 704 xfer->c_skip), 705 xfer->c_bcount >> 1); 706 } else { 707 bus_space_read_multi_stream_2(chp->cmd_iot, 708 chp->cmd_ioh, wd_data, 709 (u_int16_t *)((char *)xfer->databuf + 710 xfer->c_skip), 711 xfer->c_bcount >> 1); 712 } 713 wdcbit_bucket(chp, len - xfer->c_bcount); 714 xfer->c_skip += xfer->c_bcount; 715 xfer->c_bcount = 0; 716 } else { 717 if (drvp->drive_flags & DRIVE_CAP32) { 718 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 719 bus_space_read_multi_4(chp->data32iot, 720 chp->data32ioh, 0, 721 (u_int32_t *)((char *)xfer->databuf + 722 xfer->c_skip), 723 len >> 2); 724 else 725 bus_space_read_multi_stream_4(chp->data32iot, 726 chp->data32ioh, wd_data, 727 (u_int32_t *)((char *)xfer->databuf + 728 xfer->c_skip), 729 len >> 2); 730 731 xfer->c_skip += len & 0xfffffffc; 732 xfer->c_bcount -= len & 0xfffffffc; 733 len = len & 0x03; 734 } 735 if (len > 0) { 736 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 737 bus_space_read_multi_2(chp->cmd_iot, 738 chp->cmd_ioh, wd_data, 739 (u_int16_t *)((char *)xfer->databuf + 740 xfer->c_skip), 741 len >> 1); 742 else 743 bus_space_read_multi_stream_2(chp->cmd_iot, 744 chp->cmd_ioh, wd_data, 745 (u_int16_t *)((char *)xfer->databuf + 746 xfer->c_skip), 747 len >> 1); 748 xfer->c_skip += len; 749 xfer->c_bcount -=len; 750 } 751 } 752 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 753 chp->ch_flags |= WDCF_IRQ_WAIT; 754 } 755 return 1; 756 757 case PHASE_ABORTED: 758 case PHASE_COMPLETED: 759 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 760 if (xfer->c_flags & C_DMA) { 761 xfer->c_bcount -= sc_xfer->datalen; 762 } 763 sc_xfer->resid = xfer->c_bcount; 764 wdc_atapi_phase_complete(xfer); 765 return(1); 766 767 default: 768 if (++retries<500) { 769 DELAY(100); 770 chp->ch_status = bus_space_read_1(chp->cmd_iot, 771 chp->cmd_ioh, wd_status); 772 chp->ch_error = bus_space_read_1(chp->cmd_iot, 773 chp->cmd_ioh, wd_error); 774 goto again; 775 } 776 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 777 if (chp->ch_status & WDCS_ERR) { 778 sc_xfer->error = XS_SHORTSENSE; 779 sc_xfer->sense.atapi_sense = chp->ch_error; 780 } else { 781 if (xfer->c_flags & C_DMA) { 782 ata_dmaerr(drvp); 783 } 784 sc_xfer->error = XS_RESET; 785 wdc_atapi_reset(chp, xfer); 786 return (1); 787 } 788 } 789 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 790 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 791 DEBUG_INTR); 792 wdc_atapi_done(chp, xfer); 793 return (1); 794 } 795 796 int 797 wdc_atapi_ctrl(chp, xfer, irq) 798 struct channel_softc *chp; 799 struct wdc_xfer *xfer; 800 int irq; 801 { 802 struct scsipi_xfer *sc_xfer = xfer->cmd; 803 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 804 char *errstring = NULL; 805 int delay = (irq == 0) ? ATAPI_DELAY : 0; 806 807 /* Ack interrupt done in wait_for_unbusy */ 808 again: 809 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 810 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 811 DEBUG_INTR | DEBUG_FUNCS); 812 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 813 WDSD_IBM | (xfer->drive << 4)); 814 switch (drvp->state) { 815 case PIOMODE: 816 /* Don't try to set mode if controller can't be adjusted */ 817 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 818 goto ready; 819 /* Also don't try if the drive didn't report its mode */ 820 if ((drvp->drive_flags & DRIVE_MODE) == 0) 821 goto ready; 822 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 823 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 824 drvp->state = PIOMODE_WAIT; 825 break; 826 case PIOMODE_WAIT: 827 errstring = "piomode"; 828 if (wait_for_unbusy(chp, delay)) 829 goto timeout; 830 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 831 chp->wdc->irqack(chp); 832 if (chp->ch_status & WDCS_ERR) { 833 if (chp->ch_error == WDCE_ABRT) { 834 /* 835 * some ATAPI drives rejects pio settings. 836 * all we can do here is fall back to PIO 0 837 */ 838 drvp->drive_flags &= ~DRIVE_MODE; 839 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 840 drvp->PIO_mode = 0; 841 drvp->DMA_mode = 0; 842 printf("%s:%d:%d: pio setting rejected, " 843 "falling back to PIO mode 0\n", 844 chp->wdc->sc_dev.dv_xname, 845 chp->channel, xfer->drive); 846 chp->wdc->set_modes(chp); 847 goto ready; 848 } 849 goto error; 850 } 851 /* fall through */ 852 853 case DMAMODE: 854 if (drvp->drive_flags & DRIVE_UDMA) { 855 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 856 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 857 } else if (drvp->drive_flags & DRIVE_DMA) { 858 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 859 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 860 } else { 861 goto ready; 862 } 863 drvp->state = DMAMODE_WAIT; 864 break; 865 case DMAMODE_WAIT: 866 errstring = "dmamode"; 867 if (wait_for_unbusy(chp, delay)) 868 goto timeout; 869 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 870 chp->wdc->irqack(chp); 871 if (chp->ch_status & WDCS_ERR) 872 goto error; 873 /* fall through */ 874 875 case READY: 876 ready: 877 drvp->state = READY; 878 xfer->c_intr = wdc_atapi_intr; 879 callout_stop(&chp->ch_callout); 880 wdc_atapi_start(chp, xfer); 881 return 1; 882 } 883 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 884 chp->ch_flags |= WDCF_IRQ_WAIT; 885 xfer->c_intr = wdc_atapi_ctrl; 886 } else { 887 goto again; 888 } 889 return 1; 890 891 timeout: 892 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 893 return 0; /* IRQ was not for us */ 894 } 895 printf("%s:%d:%d: %s timed out\n", 896 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 897 sc_xfer->error = XS_TIMEOUT; 898 wdc_atapi_reset(chp, xfer); 899 return 1; 900 error: 901 printf("%s:%d:%d: %s ", 902 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 903 errstring); 904 printf("error (0x%x)\n", chp->ch_error); 905 sc_xfer->error = XS_SHORTSENSE; 906 sc_xfer->sense.atapi_sense = chp->ch_error; 907 wdc_atapi_reset(chp, xfer); 908 return 1; 909 } 910 911 void 912 wdc_atapi_phase_complete(xfer) 913 struct wdc_xfer *xfer; 914 { 915 struct channel_softc *chp = xfer->chp; 916 struct scsipi_xfer *sc_xfer = xfer->cmd; 917 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 918 919 /* wait for DSC if needed */ 920 if (drvp->drive_flags & DRIVE_ATAPIST) { 921 WDCDEBUG_PRINT(("wdc_atapi_phase_complete(%s:%d:%d) " 922 "polldsc %d\n", chp->wdc->sc_dev.dv_xname, chp->channel, 923 xfer->drive, xfer->c_dscpoll), DEBUG_XFERS); 924 if (cold) { 925 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 926 sc_xfer->timeout)) { 927 printf("%s:%d:%d: wait_for_dsc failed\n", 928 chp->wdc->sc_dev.dv_xname, chp->channel, 929 xfer->drive); 930 sc_xfer->error = XS_TIMEOUT; 931 wdc_atapi_reset(chp, xfer); 932 return; 933 } 934 } else { 935 if (wdcwait(chp, WDCS_DSC, WDCS_DSC, 10)) { 936 /* 10ms not enouth, try again in 1 tick */ 937 if (xfer->c_dscpoll++ > 938 mstohz(sc_xfer->timeout)) { 939 printf("%s:%d:%d: wait_for_dsc " 940 "failed\n", 941 chp->wdc->sc_dev.dv_xname, 942 chp->channel, xfer->drive); 943 sc_xfer->error = XS_TIMEOUT; 944 wdc_atapi_reset(chp, xfer); 945 return; 946 } 947 callout_reset(&chp->ch_callout, 1, 948 wdc_atapi_polldsc, xfer); 949 return; 950 } 951 } 952 } 953 954 /* 955 * Some drive occasionally set WDCS_ERR with 956 * "ATA illegal length indication" in the error 957 * register. If we read some data the sense is valid 958 * anyway, so don't report the error. 959 */ 960 if (chp->ch_status & WDCS_ERR && 961 ((sc_xfer->xs_control & XS_CTL_REQSENSE) == 0 || 962 sc_xfer->resid == sc_xfer->datalen)) { 963 /* save the short sense */ 964 sc_xfer->error = XS_SHORTSENSE; 965 sc_xfer->sense.atapi_sense = chp->ch_error; 966 if ((sc_xfer->xs_periph->periph_quirks & 967 PQUIRK_NOSENSE) == 0) { 968 /* ask scsipi to send a REQUEST_SENSE */ 969 sc_xfer->error = XS_BUSY; 970 sc_xfer->status = SCSI_CHECK; 971 } else if (chp->wdc->dma_status & 972 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 973 ata_dmaerr(drvp); 974 sc_xfer->error = XS_RESET; 975 wdc_atapi_reset(chp, xfer); 976 return; 977 } 978 } 979 if (xfer->c_bcount != 0) { 980 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 981 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 982 } 983 #ifdef DIAGNOSTIC 984 if (xfer->c_bcount < 0) { 985 printf("wdc_atapi_intr warning: bcount value " 986 "is %d after io\n", xfer->c_bcount); 987 } 988 #endif 989 WDCDEBUG_PRINT(("wdc_atapi_phase_complete: wdc_atapi_done(), " 990 "error 0x%x sense 0x%x\n", sc_xfer->error, 991 sc_xfer->sense.atapi_sense), DEBUG_INTR); 992 wdc_atapi_done(chp, xfer); 993 } 994 995 void 996 wdc_atapi_done(chp, xfer) 997 struct channel_softc *chp; 998 struct wdc_xfer *xfer; 999 { 1000 struct scsipi_xfer *sc_xfer = xfer->cmd; 1001 1002 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 1003 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 1004 (u_int)xfer->c_flags), DEBUG_XFERS); 1005 callout_stop(&chp->ch_callout); 1006 /* remove this command from xfer queue */ 1007 wdc_free_xfer(chp, xfer); 1008 1009 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 1010 scsipi_done(sc_xfer); 1011 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 1012 chp->ch_flags), DEBUG_XFERS); 1013 wdcstart(chp); 1014 } 1015 1016 void 1017 wdc_atapi_reset(chp, xfer) 1018 struct channel_softc *chp; 1019 struct wdc_xfer *xfer; 1020 { 1021 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 1022 struct scsipi_xfer *sc_xfer = xfer->cmd; 1023 1024 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 1025 drvp->state = 0; 1026 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 1027 printf("%s:%d:%d: reset failed\n", 1028 chp->wdc->sc_dev.dv_xname, chp->channel, 1029 xfer->drive); 1030 sc_xfer->error = XS_SELTIMEOUT; 1031 } 1032 wdc_atapi_done(chp, xfer); 1033 return; 1034 } 1035 1036 void 1037 wdc_atapi_polldsc(arg) 1038 void *arg; 1039 { 1040 wdc_atapi_phase_complete(arg); 1041 } 1042
Indexes created Tue Sep 23 23:09:58 GMT 2025