atapi_wdc.c revision 1.42
1 /* $NetBSD: atapi_wdc.c,v 1.42 2001/06/13 18:17:41 bjh21 Exp $ */ 2 3 /* 4 * Copyright (c) 1998 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 #ifndef WDCDEBUG 36 #define WDCDEBUG 37 #endif /* WDCDEBUG */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/file.h> 43 #include <sys/stat.h> 44 #include <sys/buf.h> 45 #include <sys/malloc.h> 46 #include <sys/device.h> 47 #include <sys/syslog.h> 48 #include <sys/proc.h> 49 #include <sys/dvdio.h> 50 51 #include <machine/intr.h> 52 #include <machine/bus.h> 53 54 #ifndef __BUS_SPACE_HAS_STREAM_METHODS 55 #define bus_space_write_multi_stream_2 bus_space_write_multi_2 56 #define bus_space_write_multi_stream_4 bus_space_write_multi_4 57 #define bus_space_read_multi_stream_2 bus_space_read_multi_2 58 #define bus_space_read_multi_stream_4 bus_space_read_multi_4 59 #endif /* __BUS_SPACE_HAS_STREAM_METHODS */ 60 61 #include <dev/ata/atareg.h> 62 #include <dev/ata/atavar.h> 63 #include <dev/ic/wdcreg.h> 64 #include <dev/ic/wdcvar.h> 65 66 #include <dev/scsipi/scsi_all.h> /* for SCSI status */ 67 68 #define DEBUG_INTR 0x01 69 #define DEBUG_XFERS 0x02 70 #define DEBUG_STATUS 0x04 71 #define DEBUG_FUNCS 0x08 72 #define DEBUG_PROBE 0x10 73 #ifdef WDCDEBUG 74 int wdcdebug_atapi_mask = 0; 75 #define WDCDEBUG_PRINT(args, level) \ 76 if (wdcdebug_atapi_mask & (level)) \ 77 printf args 78 #else 79 #define WDCDEBUG_PRINT(args, level) 80 #endif 81 82 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 83 int wdc_atapi_get_params __P((struct scsipi_channel *, int, int, 84 struct ataparams *)); 85 void wdc_atapi_probe_device __P((struct atapibus_softc *, int)); 86 void wdc_atapi_minphys __P((struct buf *bp)); 87 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 88 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 89 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 90 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 91 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 92 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 93 void wdc_atapi_scsipi_request __P((struct scsipi_channel *, 94 scsipi_adapter_req_t, void *)); 95 void wdc_atapi_kill_pending __P((struct scsipi_periph *)); 96 97 #define MAX_SIZE MAXPHYS 98 99 const struct scsipi_bustype wdc_atapi_bustype = { 100 SCSIPI_BUSTYPE_ATAPI, 101 atapi_scsipi_cmd, 102 atapi_interpret_sense, 103 atapi_print_addr, 104 wdc_atapi_kill_pending, 105 }; 106 107 void 108 wdc_atapibus_attach(chp) 109 struct channel_softc *chp; 110 { 111 struct wdc_softc *wdc = chp->wdc; 112 struct scsipi_adapter *adapt = &wdc->sc_atapi_adapter._generic; 113 struct scsipi_channel *chan = &chp->ch_atapi_channel; 114 struct ata_atapi_attach aa; 115 116 /* 117 * Fill in the scsipi_adapter. 118 */ 119 memset(adapt, 0, sizeof(*adapt)); 120 adapt->adapt_dev = &wdc->sc_dev; 121 adapt->adapt_nchannels = wdc->nchannels; 122 adapt->adapt_request = wdc_atapi_scsipi_request; 123 adapt->adapt_minphys = wdc_atapi_minphys; 124 if (wdc->cap & WDC_CAPABILITY_NOIRQ) 125 adapt->adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 126 wdc->sc_atapi_adapter.atapi_probe_device = wdc_atapi_probe_device; 127 128 /* 129 * Fill in the scsipi_channel. 130 */ 131 memset(chan, 0, sizeof(*chan)); 132 chan->chan_adapter = adapt; 133 chan->chan_bustype = &wdc_atapi_bustype; 134 chan->chan_channel = chp->channel; 135 chan->chan_flags = SCSIPI_CHAN_OPENINGS; 136 chan->chan_openings = 1; 137 chan->chan_max_periph = 1; 138 chan->chan_ntargets = 2; 139 chan->chan_nluns = 1; 140 141 memset(&aa, 0, sizeof(aa)); 142 aa.aa_type = T_ATAPI; 143 aa.aa_channel = chan->chan_channel; 144 aa.aa_openings = chan->chan_openings; 145 aa.aa_drv_data = chp->ch_drive; /* pass the whole array */ 146 aa.aa_bus_private = chan; 147 chp->atapibus = config_found(&wdc->sc_dev, &aa, atapiprint); 148 } 149 150 void 151 wdc_atapi_minphys(bp) 152 struct buf *bp; 153 { 154 155 if (bp->b_bcount > MAX_SIZE) 156 bp->b_bcount = MAX_SIZE; 157 minphys(bp); 158 } 159 160 /* 161 * Kill off all pending xfers for a periph. 162 * 163 * Must be called at splbio(). 164 */ 165 void 166 wdc_atapi_kill_pending(periph) 167 struct scsipi_periph *periph; 168 { 169 struct wdc_softc *wdc = 170 (void *)periph->periph_channel->chan_adapter->adapt_dev; 171 struct channel_softc *chp = 172 wdc->channels[periph->periph_channel->chan_channel]; 173 174 wdc_kill_pending(chp); 175 } 176 177 void 178 wdc_atapi_kill_xfer(chp, xfer) 179 struct channel_softc *chp; 180 struct wdc_xfer *xfer; 181 { 182 struct scsipi_xfer *sc_xfer = xfer->cmd; 183 184 callout_stop(&chp->ch_callout); 185 /* remove this command from xfer queue */ 186 wdc_free_xfer(chp, xfer); 187 sc_xfer->error = XS_DRIVER_STUFFUP; 188 scsipi_done(sc_xfer); 189 } 190 191 int 192 wdc_atapi_get_params(chan, drive, flags, id) 193 struct scsipi_channel *chan; 194 int drive, flags; 195 struct ataparams *id; 196 { 197 struct wdc_softc *wdc = (void *)chan->chan_adapter->adapt_dev; 198 struct channel_softc *chp = wdc->channels[chan->chan_channel]; 199 struct wdc_command wdc_c; 200 201 /* if no ATAPI device detected at wdc attach time, skip */ 202 /* 203 * XXX this will break scsireprobe if this is of any interest for 204 * ATAPI devices one day. 205 */ 206 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 207 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 208 drive), DEBUG_PROBE); 209 return -1; 210 } 211 memset(&wdc_c, 0, sizeof(struct wdc_command)); 212 wdc_c.r_command = ATAPI_SOFT_RESET; 213 wdc_c.r_st_bmask = 0; 214 wdc_c.r_st_pmask = 0; 215 wdc_c.flags = AT_POLL; 216 wdc_c.timeout = WDC_RESET_WAIT; 217 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 218 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 219 " drive %s:%d:%d: driver failed\n", 220 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 221 panic("wdc_atapi_get_params"); 222 } 223 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 224 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 225 "failed for drive %s:%d:%d: error 0x%x\n", 226 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 227 wdc_c.r_error), DEBUG_PROBE); 228 return -1; 229 } 230 chp->ch_drive[drive].state = 0; 231 232 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 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_POLL, id) != 0) { 237 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 238 "failed for drive %s:%d:%d: error 0x%x\n", 239 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 240 wdc_c.r_error), DEBUG_PROBE); 241 return -1; 242 } 243 return 0; 244 } 245 246 void 247 wdc_atapi_probe_device(sc, target) 248 struct atapibus_softc *sc; 249 int target; 250 { 251 struct scsipi_channel *chan = sc->sc_channel; 252 struct scsipi_periph *periph; 253 struct ataparams ids; 254 struct ataparams *id = &ids; 255 struct ata_drive_datas *drvp = &sc->sc_drvs[target]; 256 struct scsipibus_attach_args sa; 257 char serial_number[21], model[41], firmware_revision[9]; 258 259 /* skip if already attached */ 260 if (scsipi_lookup_periph(chan, target, 0) != NULL) 261 return; 262 263 if (wdc_atapi_get_params(chan, target, 264 XS_CTL_POLL|XS_CTL_NOSLEEP, id) == 0) { 265 #ifdef ATAPI_DEBUG_PROBE 266 printf("%s drive %d: cmdsz 0x%x drqtype 0x%x\n", 267 sc->sc_dev.dv_xname, target, 268 id->atap_config & ATAPI_CFG_CMD_MASK, 269 id->atap_config & ATAPI_CFG_DRQ_MASK); 270 #endif 271 periph = scsipi_alloc_periph(M_NOWAIT); 272 if (periph == NULL) { 273 printf("%s: unable to allocate periph for drive %d\n", 274 sc->sc_dev.dv_xname, target); 275 return; 276 } 277 periph->periph_dev = NULL; 278 periph->periph_channel = chan; 279 periph->periph_switch = &atapi_probe_periphsw; 280 periph->periph_target = target; 281 periph->periph_lun = 0; 282 283 #ifdef SCSIPI_DEBUG 284 if (SCSIPI_DEBUG_TYPE == SCSIPI_BUSTYPE_ATAPI && 285 SCSIPI_DEBUG_TARGET == target) 286 periph->periph_dbflags |= SCSIPI_DEBUG_FLAGS; 287 #endif 288 periph->periph_type = ATAPI_CFG_TYPE(id->atap_config); 289 if (id->atap_config & ATAPI_CFG_REMOV) 290 periph->periph_flags |= PERIPH_REMOVABLE; 291 292 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 s = splbio(); 373 wdc_exec_xfer(wdc->channels[channel], xfer); 374 #ifdef DIAGNOSTIC 375 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 376 (sc_xfer->xs_status & XS_STS_DONE) == 0) 377 panic("wdc_atapi_scsipi_request: polled command " 378 "not done"); 379 #endif 380 splx(s); 381 return; 382 383 default: 384 /* Not supported, nothing to do. */ 385 ; 386 } 387 } 388 389 void 390 wdc_atapi_start(chp, xfer) 391 struct channel_softc *chp; 392 struct wdc_xfer *xfer; 393 { 394 struct scsipi_xfer *sc_xfer = xfer->cmd; 395 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 396 397 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 398 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 399 sc_xfer->xs_control), DEBUG_XFERS); 400 /* Adjust C_DMA, it may have changed if we are requesting sense */ 401 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 402 sc_xfer->datalen > 0 && !(xfer->c_flags & C_FORCEPIO)) { 403 if (drvp->n_xfers <= NXFER) 404 drvp->n_xfers++; 405 xfer->c_flags |= C_DMA; 406 } else { 407 xfer->c_flags &= ~C_DMA; 408 } 409 /* start timeout machinery */ 410 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 411 callout_reset(&chp->ch_callout, sc_xfer->timeout * hz / 1000, 412 wdctimeout, chp); 413 /* Do control operations specially. */ 414 if (drvp->state < READY) { 415 if (drvp->state != RESET) { 416 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 417 chp->wdc->sc_dev.dv_xname, chp->channel, 418 xfer->drive, drvp->state); 419 panic("wdc_atapi_start: bad state"); 420 } 421 drvp->state = PIOMODE; 422 wdc_atapi_ctrl(chp, xfer, 0); 423 return; 424 } 425 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 426 WDSD_IBM | (xfer->drive << 4)); 427 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 428 printf("wdc_atapi_start: not ready, st = %02x\n", 429 chp->ch_status); 430 sc_xfer->error = XS_TIMEOUT; 431 wdc_atapi_reset(chp, xfer); 432 return; 433 } 434 435 /* 436 * Even with WDCS_ERR, the device should accept a command packet 437 * Limit length to what can be stuffed into the cylinder register 438 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 439 * but not all devices do that and it's not obvious from the 440 * ATAPI spec that that behaviour should be expected. If more 441 * data is necessary, multiple data transfer phases will be done. 442 */ 443 444 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 445 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 446 0, 0, 0, 447 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 448 449 /* 450 * If there is no interrupt for CMD input, busy-wait for it (done in 451 * the interrupt routine. If it is a polled command, call the interrupt 452 * routine until command is done. 453 */ 454 if ((sc_xfer->xs_periph->periph_cap & ATAPI_CFG_DRQ_MASK) != 455 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 456 /* Wait for at last 400ns for status bit to be valid */ 457 DELAY(1); 458 if (chp->ch_flags & WDCF_DMA_WAIT) { 459 wdc_dmawait(chp, xfer, sc_xfer->timeout); 460 chp->ch_flags &= ~WDCF_DMA_WAIT; 461 } 462 wdc_atapi_intr(chp, xfer, 0); 463 } else { 464 chp->ch_flags |= WDCF_IRQ_WAIT; 465 } 466 if (sc_xfer->xs_control & XS_CTL_POLL) { 467 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 468 /* Wait for at last 400ns for status bit to be valid */ 469 DELAY(1); 470 wdc_atapi_intr(chp, xfer, 0); 471 } 472 } 473 } 474 475 int 476 wdc_atapi_intr(chp, xfer, irq) 477 struct channel_softc *chp; 478 struct wdc_xfer *xfer; 479 int irq; 480 { 481 struct scsipi_xfer *sc_xfer = xfer->cmd; 482 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 483 int len, phase, i, retries=0; 484 int ire; 485 int dma_flags = 0; 486 void *cmd; 487 488 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 489 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 490 491 /* Is it not a transfer, but a control operation? */ 492 if (drvp->state < READY) { 493 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 494 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 495 drvp->state); 496 panic("wdc_atapi_intr: bad state\n"); 497 } 498 /* 499 * If we missed an interrupt in a PIO transfer, reset and restart. 500 * Don't try to continue transfer, we may have missed cycles. 501 */ 502 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 503 sc_xfer->error = XS_TIMEOUT; 504 wdc_atapi_reset(chp, xfer); 505 return 1; 506 } 507 508 /* Ack interrupt done in wait_for_unbusy */ 509 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 510 WDSD_IBM | (xfer->drive << 4)); 511 if (wait_for_unbusy(chp, 512 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 513 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 514 return 0; /* IRQ was not for us */ 515 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 516 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 517 xfer->c_bcount, xfer->c_skip); 518 if (xfer->c_flags & C_DMA) { 519 ata_dmaerr(drvp); 520 } 521 sc_xfer->error = XS_TIMEOUT; 522 wdc_atapi_reset(chp, xfer); 523 return 1; 524 } 525 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 526 chp->wdc->irqack(chp); 527 528 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 529 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) { 530 ata_dmaerr(drvp); 531 } 532 /* 533 * if the request sense command was aborted, report the short sense 534 * previously recorded, else continue normal processing 535 */ 536 537 if (xfer->c_flags & C_DMA) 538 dma_flags = (sc_xfer->xs_control & XS_CTL_DATA_IN) 539 ? WDC_DMA_READ : 0; 540 again: 541 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 542 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 543 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 544 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 545 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 546 "ire 0x%x :", xfer->c_bcount, 547 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 548 549 switch (phase) { 550 case PHASE_CMDOUT: 551 cmd = sc_xfer->cmd; 552 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 553 /* Init the DMA channel if necessary */ 554 if (xfer->c_flags & C_DMA) { 555 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 556 chp->channel, xfer->drive, 557 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 558 sc_xfer->error = XS_DRIVER_STUFFUP; 559 break; 560 } 561 } 562 /* send packet command */ 563 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 564 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 565 if (drvp->drive_flags & DRIVE_CAP32) { 566 bus_space_write_multi_4(chp->data32iot, 567 chp->data32ioh, 0, 568 (u_int32_t *)cmd, 569 sc_xfer->cmdlen >> 2); 570 } else { 571 bus_space_write_multi_2(chp->cmd_iot, 572 chp->cmd_ioh, wd_data, 573 (u_int16_t *)cmd, 574 sc_xfer->cmdlen >> 1); 575 } 576 } else { 577 if (drvp->drive_flags & DRIVE_CAP32) { 578 bus_space_write_multi_stream_4(chp->data32iot, 579 chp->data32ioh, 0, 580 (u_int32_t *)cmd, 581 sc_xfer->cmdlen >> 2); 582 } else { 583 bus_space_write_multi_stream_2(chp->cmd_iot, 584 chp->cmd_ioh, wd_data, 585 (u_int16_t *)cmd, 586 sc_xfer->cmdlen >> 1); 587 } 588 } 589 /* Start the DMA channel if necessary */ 590 if (xfer->c_flags & C_DMA) { 591 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 592 chp->channel, xfer->drive); 593 chp->ch_flags |= WDCF_DMA_WAIT; 594 } 595 596 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 597 chp->ch_flags |= WDCF_IRQ_WAIT; 598 } 599 return 1; 600 601 case PHASE_DATAOUT: 602 /* write data */ 603 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 604 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 605 (xfer->c_flags & C_DMA) != 0) { 606 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 607 if (xfer->c_flags & C_DMA) { 608 ata_dmaerr(drvp); 609 } 610 sc_xfer->error = XS_TIMEOUT; 611 wdc_atapi_reset(chp, xfer); 612 return 1; 613 } 614 if (xfer->c_bcount < len) { 615 printf("wdc_atapi_intr: warning: write only " 616 "%d of %d requested bytes\n", xfer->c_bcount, len); 617 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 618 bus_space_write_multi_2(chp->cmd_iot, 619 chp->cmd_ioh, wd_data, 620 (u_int16_t *)((char *)xfer->databuf + 621 xfer->c_skip), 622 xfer->c_bcount >> 1); 623 } else { 624 bus_space_write_multi_stream_2(chp->cmd_iot, 625 chp->cmd_ioh, wd_data, 626 (u_int16_t *)((char *)xfer->databuf + 627 xfer->c_skip), 628 xfer->c_bcount >> 1); 629 } 630 for (i = xfer->c_bcount; i < len; i += 2) 631 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 632 wd_data, 0); 633 xfer->c_skip += xfer->c_bcount; 634 xfer->c_bcount = 0; 635 } else { 636 if (drvp->drive_flags & DRIVE_CAP32) { 637 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 638 bus_space_write_multi_4(chp->data32iot, 639 chp->data32ioh, 0, 640 (u_int32_t *)((char *)xfer->databuf + 641 xfer->c_skip), 642 len >> 2); 643 else 644 bus_space_write_multi_stream_4(chp->data32iot, 645 chp->data32ioh, wd_data, 646 (u_int32_t *)((char *)xfer->databuf + 647 xfer->c_skip), 648 len >> 2); 649 650 xfer->c_skip += len & 0xfffffffc; 651 xfer->c_bcount -= len & 0xfffffffc; 652 len = len & 0x03; 653 } 654 if (len > 0) { 655 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 656 bus_space_write_multi_2(chp->cmd_iot, 657 chp->cmd_ioh, wd_data, 658 (u_int16_t *)((char *)xfer->databuf + 659 xfer->c_skip), 660 len >> 1); 661 else 662 bus_space_write_multi_stream_2(chp->cmd_iot, 663 chp->cmd_ioh, wd_data, 664 (u_int16_t *)((char *)xfer->databuf + 665 xfer->c_skip), 666 len >> 1); 667 xfer->c_skip += len; 668 xfer->c_bcount -= len; 669 } 670 } 671 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 672 chp->ch_flags |= WDCF_IRQ_WAIT; 673 } 674 return 1; 675 676 case PHASE_DATAIN: 677 /* Read data */ 678 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 679 if ((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 || 680 (xfer->c_flags & C_DMA) != 0) { 681 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 682 if (xfer->c_flags & C_DMA) { 683 ata_dmaerr(drvp); 684 } 685 sc_xfer->error = XS_TIMEOUT; 686 wdc_atapi_reset(chp, xfer); 687 return 1; 688 } 689 if (xfer->c_bcount < len) { 690 printf("wdc_atapi_intr: warning: reading only " 691 "%d of %d bytes\n", xfer->c_bcount, len); 692 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 693 bus_space_read_multi_2(chp->cmd_iot, 694 chp->cmd_ioh, wd_data, 695 (u_int16_t *)((char *)xfer->databuf + 696 xfer->c_skip), 697 xfer->c_bcount >> 1); 698 } else { 699 bus_space_read_multi_stream_2(chp->cmd_iot, 700 chp->cmd_ioh, wd_data, 701 (u_int16_t *)((char *)xfer->databuf + 702 xfer->c_skip), 703 xfer->c_bcount >> 1); 704 } 705 wdcbit_bucket(chp, len - xfer->c_bcount); 706 xfer->c_skip += xfer->c_bcount; 707 xfer->c_bcount = 0; 708 } else { 709 if (drvp->drive_flags & DRIVE_CAP32) { 710 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 711 bus_space_read_multi_4(chp->data32iot, 712 chp->data32ioh, 0, 713 (u_int32_t *)((char *)xfer->databuf + 714 xfer->c_skip), 715 len >> 2); 716 else 717 bus_space_read_multi_stream_4(chp->data32iot, 718 chp->data32ioh, wd_data, 719 (u_int32_t *)((char *)xfer->databuf + 720 xfer->c_skip), 721 len >> 2); 722 723 xfer->c_skip += len & 0xfffffffc; 724 xfer->c_bcount -= len & 0xfffffffc; 725 len = len & 0x03; 726 } 727 if (len > 0) { 728 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 729 bus_space_read_multi_2(chp->cmd_iot, 730 chp->cmd_ioh, wd_data, 731 (u_int16_t *)((char *)xfer->databuf + 732 xfer->c_skip), 733 len >> 1); 734 else 735 bus_space_read_multi_stream_2(chp->cmd_iot, 736 chp->cmd_ioh, wd_data, 737 (u_int16_t *)((char *)xfer->databuf + 738 xfer->c_skip), 739 len >> 1); 740 xfer->c_skip += len; 741 xfer->c_bcount -=len; 742 } 743 } 744 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 745 chp->ch_flags |= WDCF_IRQ_WAIT; 746 } 747 return 1; 748 749 case PHASE_ABORTED: 750 case PHASE_COMPLETED: 751 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 752 /* turn off DMA channel */ 753 if (xfer->c_flags & C_DMA) { 754 xfer->c_bcount -= sc_xfer->datalen; 755 } 756 sc_xfer->resid = xfer->c_bcount; 757 if (chp->ch_status & WDCS_ERR) { 758 /* save the short sense */ 759 sc_xfer->error = XS_SHORTSENSE; 760 sc_xfer->sense.atapi_sense = chp->ch_error; 761 if ((sc_xfer->xs_periph->periph_quirks & 762 PQUIRK_NOSENSE) == 0) { 763 /* ask scsipi to send a REQUEST_SENSE */ 764 sc_xfer->error = XS_BUSY; 765 sc_xfer->status = SCSI_CHECK; 766 } else if (chp->wdc->dma_status & 767 (WDC_DMAST_NOIRQ | WDC_DMAST_ERR)) { 768 ata_dmaerr(drvp); 769 sc_xfer->error = XS_RESET; 770 wdc_atapi_reset(chp, xfer); 771 return (1); 772 } 773 } 774 if (xfer->c_bcount != 0) { 775 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 776 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 777 } 778 #ifdef DIAGNOSTIC 779 if (xfer->c_bcount < 0) { 780 printf("wdc_atapi_intr warning: bcount value " 781 "is %d after io\n", xfer->c_bcount); 782 } 783 #endif 784 break; 785 786 default: 787 if (++retries<500) { 788 DELAY(100); 789 chp->ch_status = bus_space_read_1(chp->cmd_iot, 790 chp->cmd_ioh, wd_status); 791 chp->ch_error = bus_space_read_1(chp->cmd_iot, 792 chp->cmd_ioh, wd_error); 793 goto again; 794 } 795 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 796 if (chp->ch_status & WDCS_ERR) { 797 sc_xfer->error = XS_SHORTSENSE; 798 sc_xfer->sense.atapi_sense = chp->ch_error; 799 } else { 800 if (xfer->c_flags & C_DMA) { 801 ata_dmaerr(drvp); 802 } 803 sc_xfer->error = XS_RESET; 804 wdc_atapi_reset(chp, xfer); 805 return (1); 806 } 807 } 808 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 809 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 810 DEBUG_INTR); 811 wdc_atapi_done(chp, xfer); 812 return (1); 813 } 814 815 int 816 wdc_atapi_ctrl(chp, xfer, irq) 817 struct channel_softc *chp; 818 struct wdc_xfer *xfer; 819 int irq; 820 { 821 struct scsipi_xfer *sc_xfer = xfer->cmd; 822 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 823 char *errstring = NULL; 824 int delay = (irq == 0) ? ATAPI_DELAY : 0; 825 826 /* Ack interrupt done in wait_for_unbusy */ 827 again: 828 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 829 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 830 DEBUG_INTR | DEBUG_FUNCS); 831 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 832 WDSD_IBM | (xfer->drive << 4)); 833 switch (drvp->state) { 834 case PIOMODE: 835 /* Don't try to set mode if controller can't be adjusted */ 836 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 837 goto ready; 838 /* Also don't try if the drive didn't report its mode */ 839 if ((drvp->drive_flags & DRIVE_MODE) == 0) 840 goto ready; 841 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 842 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 843 drvp->state = PIOMODE_WAIT; 844 break; 845 case PIOMODE_WAIT: 846 errstring = "piomode"; 847 if (wait_for_unbusy(chp, delay)) 848 goto timeout; 849 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 850 chp->wdc->irqack(chp); 851 if (chp->ch_status & WDCS_ERR) { 852 if (chp->ch_error == WDCE_ABRT) { 853 /* 854 * some ATAPI drives rejects pio settings. 855 * all we can do here is fall back to PIO 0 856 */ 857 drvp->drive_flags &= ~DRIVE_MODE; 858 drvp->drive_flags &= ~(DRIVE_DMA|DRIVE_UDMA); 859 drvp->PIO_mode = 0; 860 drvp->DMA_mode = 0; 861 printf("%s:%d:%d: pio setting rejected, " 862 "falling back to PIO mode 0\n", 863 chp->wdc->sc_dev.dv_xname, 864 chp->channel, xfer->drive); 865 chp->wdc->set_modes(chp); 866 goto ready; 867 } 868 goto error; 869 } 870 /* fall through */ 871 872 case DMAMODE: 873 if (drvp->drive_flags & DRIVE_UDMA) { 874 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 875 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 876 } else if (drvp->drive_flags & DRIVE_DMA) { 877 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 878 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 879 } else { 880 goto ready; 881 } 882 drvp->state = DMAMODE_WAIT; 883 break; 884 case DMAMODE_WAIT: 885 errstring = "dmamode"; 886 if (wait_for_unbusy(chp, delay)) 887 goto timeout; 888 if (chp->wdc->cap & WDC_CAPABILITY_IRQACK) 889 chp->wdc->irqack(chp); 890 if (chp->ch_status & WDCS_ERR) 891 goto error; 892 /* fall through */ 893 894 case READY: 895 ready: 896 drvp->state = READY; 897 xfer->c_intr = wdc_atapi_intr; 898 callout_stop(&chp->ch_callout); 899 wdc_atapi_start(chp, xfer); 900 return 1; 901 } 902 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 903 chp->ch_flags |= WDCF_IRQ_WAIT; 904 xfer->c_intr = wdc_atapi_ctrl; 905 } else { 906 goto again; 907 } 908 return 1; 909 910 timeout: 911 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 912 return 0; /* IRQ was not for us */ 913 } 914 printf("%s:%d:%d: %s timed out\n", 915 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 916 sc_xfer->error = XS_TIMEOUT; 917 wdc_atapi_reset(chp, xfer); 918 return 1; 919 error: 920 printf("%s:%d:%d: %s ", 921 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 922 errstring); 923 printf("error (0x%x)\n", chp->ch_error); 924 sc_xfer->error = XS_SHORTSENSE; 925 sc_xfer->sense.atapi_sense = chp->ch_error; 926 wdc_atapi_reset(chp, xfer); 927 return 1; 928 } 929 930 void 931 wdc_atapi_done(chp, xfer) 932 struct channel_softc *chp; 933 struct wdc_xfer *xfer; 934 { 935 struct scsipi_xfer *sc_xfer = xfer->cmd; 936 937 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 938 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 939 (u_int)xfer->c_flags), DEBUG_XFERS); 940 callout_stop(&chp->ch_callout); 941 /* remove this command from xfer queue */ 942 wdc_free_xfer(chp, xfer); 943 944 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 945 scsipi_done(sc_xfer); 946 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 947 chp->ch_flags), DEBUG_XFERS); 948 wdcstart(chp); 949 } 950 951 void 952 wdc_atapi_reset(chp, xfer) 953 struct channel_softc *chp; 954 struct wdc_xfer *xfer; 955 { 956 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 957 struct scsipi_xfer *sc_xfer = xfer->cmd; 958 959 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 960 drvp->state = 0; 961 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 962 printf("%s:%d:%d: reset failed\n", 963 chp->wdc->sc_dev.dv_xname, chp->channel, 964 xfer->drive); 965 sc_xfer->error = XS_SELTIMEOUT; 966 } 967 wdc_atapi_done(chp, xfer); 968 return; 969 } 970
Indexes created Tue Sep 23 23:09:58 GMT 2025