atapi_wdc.c revision 1.32
1 /* $NetBSD: atapi_wdc.c,v 1.32 2000/03/23 07:01:43 thorpej 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 REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 */ 35 36 #ifndef WDCDEBUG 37 #define WDCDEBUG 38 #endif /* WDCDEBUG */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/kernel.h> 43 #include <sys/file.h> 44 #include <sys/stat.h> 45 #include <sys/buf.h> 46 #include <sys/malloc.h> 47 #include <sys/device.h> 48 #include <sys/syslog.h> 49 #include <sys/proc.h> 50 51 #include <vm/vm.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 #include <dev/scsipi/scsipi_all.h> 68 #include <dev/scsipi/scsipiconf.h> 69 #include <dev/scsipi/atapiconf.h> 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 87 void wdc_atapi_minphys __P((struct buf *bp)); 88 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 89 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *, int)); 90 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 91 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 92 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 93 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 94 int wdc_atapi_send_cmd __P((struct scsipi_xfer *sc_xfer)); 95 96 #define MAX_SIZE MAXPHYS 97 98 void 99 wdc_atapibus_attach(chp) 100 struct channel_softc *chp; 101 { 102 struct wdc_softc *wdc = chp->wdc; 103 int channel = chp->channel; 104 struct ata_atapi_attach aa_link; 105 106 /* 107 * Fill in the adapter. 108 */ 109 wdc->sc_atapi_adapter.scsipi_cmd = wdc_atapi_send_cmd; 110 wdc->sc_atapi_adapter.scsipi_minphys = wdc_atapi_minphys; 111 112 memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); 113 aa_link.aa_type = T_ATAPI; 114 aa_link.aa_channel = channel; 115 aa_link.aa_openings = 1; 116 aa_link.aa_drv_data = chp->ch_drive; /* pass the whole array */ 117 aa_link.aa_bus_private = &wdc->sc_atapi_adapter; 118 chp->atapibus = config_found(&wdc->sc_dev, (void *)&aa_link, 119 atapi_print); 120 } 121 122 void 123 wdc_atapi_minphys (struct buf *bp) 124 { 125 if(bp->b_bcount > MAX_SIZE) 126 bp->b_bcount = MAX_SIZE; 127 minphys(bp); 128 } 129 130 /* 131 * Kill off all pending xfers for a scsipi_link. 132 * 133 * Must be called at splbio(). 134 */ 135 void 136 atapi_kill_pending(sc_link) 137 struct scsipi_link *sc_link; 138 { 139 struct wdc_softc *wdc = (void *)sc_link->adapter_softc; 140 struct channel_softc *chp = 141 wdc->channels[sc_link->scsipi_atapi.channel]; 142 143 wdc_kill_pending(chp); 144 } 145 146 void 147 wdc_atapi_kill_xfer(chp, xfer) 148 struct channel_softc *chp; 149 struct wdc_xfer *xfer; 150 { 151 struct scsipi_xfer *sc_xfer = xfer->cmd; 152 153 callout_stop(&chp->ch_callout); 154 /* remove this command from xfer queue */ 155 wdc_free_xfer(chp, xfer); 156 sc_xfer->xs_status |= XS_STS_DONE; 157 sc_xfer->error = XS_DRIVER_STUFFUP; 158 scsipi_done(sc_xfer); 159 } 160 161 int 162 wdc_atapi_get_params(ab_link, drive, flags, id) 163 struct scsipi_link *ab_link; 164 u_int8_t drive; 165 int flags; 166 struct ataparams *id; 167 { 168 struct wdc_softc *wdc = (void*)ab_link->adapter_softc; 169 struct channel_softc *chp = 170 wdc->channels[ab_link->scsipi_atapi.channel]; 171 struct wdc_command wdc_c; 172 173 /* if no ATAPI device detected at wdc attach time, skip */ 174 /* 175 * XXX this will break scsireprobe if this is of any interest for 176 * ATAPI devices one day. 177 */ 178 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 179 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 180 drive), DEBUG_PROBE); 181 return -1; 182 } 183 memset(&wdc_c, 0, sizeof(struct wdc_command)); 184 wdc_c.r_command = ATAPI_SOFT_RESET; 185 wdc_c.r_st_bmask = 0; 186 wdc_c.r_st_pmask = 0; 187 wdc_c.flags = AT_POLL; 188 wdc_c.timeout = WDC_RESET_WAIT; 189 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 190 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 191 " drive %s:%d:%d: driver failed\n", 192 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 193 panic("wdc_atapi_get_params"); 194 } 195 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 196 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 197 "failed for drive %s:%d:%d: error 0x%x\n", 198 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 199 wdc_c.r_error), DEBUG_PROBE); 200 return -1; 201 } 202 chp->ch_drive[drive].state = 0; 203 204 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 205 206 /* Some ATAPI devices need a bit more time after software reset. */ 207 delay(5000); 208 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 209 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 210 "failed for drive %s:%d:%d: error 0x%x\n", 211 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 212 wdc_c.r_error), DEBUG_PROBE); 213 return -1; 214 } 215 return COMPLETE; 216 } 217 218 int 219 wdc_atapi_send_cmd(sc_xfer) 220 struct scsipi_xfer *sc_xfer; 221 { 222 struct wdc_softc *wdc = (void*)sc_xfer->sc_link->adapter_softc; 223 struct wdc_xfer *xfer; 224 int flags = sc_xfer->xs_control; 225 int channel = sc_xfer->sc_link->scsipi_atapi.channel; 226 int drive = sc_xfer->sc_link->scsipi_atapi.drive; 227 int s, ret; 228 229 WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d\n", 230 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 231 232 if ((wdc->sc_dev.dv_flags & DVF_ACTIVE) == 0) { 233 sc_xfer->xs_status |= XS_STS_DONE; 234 sc_xfer->error = XS_DRIVER_STUFFUP; 235 scsipi_done(sc_xfer); 236 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 237 return (SUCCESSFULLY_QUEUED); 238 else 239 return (COMPLETE); 240 } 241 242 xfer = wdc_get_xfer((flags & XS_CTL_NOSLEEP) ? 243 WDC_NOSLEEP : WDC_CANSLEEP); 244 if (xfer == NULL) { 245 return TRY_AGAIN_LATER; 246 } 247 if (sc_xfer->xs_control & XS_CTL_POLL) 248 xfer->c_flags |= C_POLL; 249 xfer->drive = drive; 250 xfer->c_flags |= C_ATAPI; 251 xfer->cmd = sc_xfer; 252 xfer->databuf = sc_xfer->data; 253 xfer->c_bcount = sc_xfer->datalen; 254 xfer->c_start = wdc_atapi_start; 255 xfer->c_intr = wdc_atapi_intr; 256 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 257 s = splbio(); 258 wdc_exec_xfer(wdc->channels[channel], xfer); 259 #ifdef DIAGNOSTIC 260 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 261 (sc_xfer->xs_status & XS_STS_DONE) == 0) 262 panic("wdc_atapi_send_cmd: polled command not done"); 263 #endif 264 ret = (sc_xfer->xs_status & XS_STS_DONE) ? 265 COMPLETE : SUCCESSFULLY_QUEUED; 266 splx(s); 267 return ret; 268 } 269 270 void 271 wdc_atapi_start(chp, xfer) 272 struct channel_softc *chp; 273 struct wdc_xfer *xfer; 274 { 275 struct scsipi_xfer *sc_xfer = xfer->cmd; 276 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 277 278 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 279 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 280 sc_xfer->xs_control), DEBUG_XFERS); 281 /* Adjust C_DMA, it may have changed if we are requesting sense */ 282 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 283 (sc_xfer->datalen > 0 || (xfer->c_flags & C_SENSE))) { 284 if (drvp->n_xfers <= NXFER) 285 drvp->n_xfers++; 286 xfer->c_flags |= C_DMA; 287 } else { 288 xfer->c_flags &= ~C_DMA; 289 } 290 /* start timeout machinery */ 291 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 292 callout_reset(&chp->ch_callout, sc_xfer->timeout * hz / 1000, 293 wdctimeout, chp); 294 /* Do control operations specially. */ 295 if (drvp->state < READY) { 296 if (drvp->state != PIOMODE) { 297 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 298 chp->wdc->sc_dev.dv_xname, chp->channel, 299 xfer->drive, drvp->state); 300 panic("wdc_atapi_start: bad state"); 301 } 302 wdc_atapi_ctrl(chp, xfer, 0); 303 return; 304 } 305 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 306 WDSD_IBM | (xfer->drive << 4)); 307 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 308 printf("wdc_atapi_start: not ready, st = %02x\n", 309 chp->ch_status); 310 sc_xfer->error = XS_TIMEOUT; 311 wdc_atapi_reset(chp, xfer); 312 return; 313 } 314 315 /* 316 * Even with WDCS_ERR, the device should accept a command packet 317 * Limit length to what can be stuffed into the cylinder register 318 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 319 * but not all devices do that and it's not obvious from the 320 * ATAPI spec that that behaviour should be expected. If more 321 * data is necessary, multiple data transfer phases will be done. 322 */ 323 324 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 325 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 326 0, 0, 0, 327 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 328 329 /* 330 * If there is no interrupt for CMD input, busy-wait for it (done in 331 * the interrupt routine. If it is a polled command, call the interrupt 332 * routine until command is done. 333 */ 334 if ((sc_xfer->sc_link->scsipi_atapi.cap & ATAPI_CFG_DRQ_MASK) != 335 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 336 /* Wait for at last 400ns for status bit to be valid */ 337 DELAY(1); 338 wdc_atapi_intr(chp, xfer, 0); 339 } else { 340 chp->ch_flags |= WDCF_IRQ_WAIT; 341 } 342 if (sc_xfer->xs_control & XS_CTL_POLL) { 343 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 344 /* Wait for at last 400ns for status bit to be valid */ 345 DELAY(1); 346 wdc_atapi_intr(chp, xfer, 0); 347 } 348 } 349 } 350 351 int 352 wdc_atapi_intr(chp, xfer, irq) 353 struct channel_softc *chp; 354 struct wdc_xfer *xfer; 355 int irq; 356 { 357 struct scsipi_xfer *sc_xfer = xfer->cmd; 358 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 359 int len, phase, i, retries=0; 360 int ire, dma_err = 0; 361 int dma_flags = 0; 362 struct scsipi_generic _cmd_reqsense; 363 struct scsipi_sense *cmd_reqsense = 364 (struct scsipi_sense *)&_cmd_reqsense; 365 void *cmd; 366 367 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 368 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 369 370 /* Is it not a transfer, but a control operation? */ 371 if (drvp->state < READY) { 372 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 373 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 374 drvp->state); 375 panic("wdc_atapi_intr: bad state\n"); 376 } 377 /* 378 * If we missed an interrupt in a PIO transfer, reset and restart. 379 * Don't try to continue transfer, we may have missed cycles. 380 */ 381 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 382 sc_xfer->error = XS_TIMEOUT; 383 wdc_atapi_reset(chp, xfer); 384 return 1; 385 } 386 387 /* Ack interrupt done in wait_for_unbusy */ 388 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 389 WDSD_IBM | (xfer->drive << 4)); 390 if (wait_for_unbusy(chp, 391 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 392 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 393 return 0; /* IRQ was not for us */ 394 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 395 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 396 xfer->c_bcount, xfer->c_skip); 397 if (xfer->c_flags & C_DMA) 398 ata_dmaerr(drvp); 399 sc_xfer->error = XS_TIMEOUT; 400 wdc_atapi_reset(chp, xfer); 401 return 1; 402 } 403 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 404 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 405 ata_dmaerr(drvp); 406 /* 407 * if the request sense command was aborted, report the short sense 408 * previously recorded, else continue normal processing 409 */ 410 411 if ((xfer->c_flags & C_SENSE) != 0 && 412 (chp->ch_status & WDCS_ERR) != 0 && 413 (chp->ch_error & WDCE_ABRT) != 0) { 414 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 415 "calling wdc_atapi_done(), sense 0x%x\n", 416 sc_xfer->sense.atapi_sense), DEBUG_INTR); 417 wdc_atapi_done(chp, xfer); 418 return 1; 419 } 420 421 if (xfer->c_flags & C_DMA) { 422 dma_flags = ((sc_xfer->xs_control & XS_CTL_DATA_IN) || 423 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 424 dma_flags |= sc_xfer->xs_control & XS_CTL_POLL ? 425 WDC_DMA_POLL : 0; 426 } 427 again: 428 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 429 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 430 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 431 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 432 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 433 "ire 0x%x :", xfer->c_bcount, 434 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 435 436 switch (phase) { 437 case PHASE_CMDOUT: 438 if (xfer->c_flags & C_SENSE) { 439 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 440 cmd_reqsense->opcode = REQUEST_SENSE; 441 cmd_reqsense->length = xfer->c_bcount; 442 cmd = cmd_reqsense; 443 } else { 444 cmd = sc_xfer->cmd; 445 } 446 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 447 /* Init the DMA channel if necessary */ 448 if (xfer->c_flags & C_DMA) { 449 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 450 chp->channel, xfer->drive, 451 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 452 sc_xfer->error = XS_DRIVER_STUFFUP; 453 break; 454 } 455 } 456 /* send packet command */ 457 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 458 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 459 if (drvp->drive_flags & DRIVE_CAP32) { 460 bus_space_write_multi_4(chp->data32iot, 461 chp->data32ioh, 0, 462 (u_int32_t *)cmd, 463 sc_xfer->cmdlen >> 2); 464 } else { 465 bus_space_write_multi_2(chp->cmd_iot, 466 chp->cmd_ioh, wd_data, 467 (u_int16_t *)cmd, 468 sc_xfer->cmdlen >> 1); 469 } 470 } else { 471 if (drvp->drive_flags & DRIVE_CAP32) { 472 bus_space_write_multi_stream_4(chp->data32iot, 473 chp->data32ioh, 0, 474 (u_int32_t *)cmd, 475 sc_xfer->cmdlen >> 2); 476 } else { 477 bus_space_write_multi_stream_2(chp->cmd_iot, 478 chp->cmd_ioh, wd_data, 479 (u_int16_t *)cmd, 480 sc_xfer->cmdlen >> 1); 481 } 482 } 483 /* Start the DMA channel if necessary */ 484 if (xfer->c_flags & C_DMA) { 485 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 486 chp->channel, xfer->drive, dma_flags); 487 } 488 489 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 490 chp->ch_flags |= WDCF_IRQ_WAIT; 491 } 492 return 1; 493 494 case PHASE_DATAOUT: 495 /* write data */ 496 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 497 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 498 (xfer->c_flags & C_DMA) != 0) { 499 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 500 if (xfer->c_flags & C_DMA) { 501 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 502 chp->channel, xfer->drive, dma_flags); 503 ata_dmaerr(drvp); 504 } 505 sc_xfer->error = XS_TIMEOUT; 506 wdc_atapi_reset(chp, xfer); 507 return 1; 508 } 509 if (xfer->c_bcount < len) { 510 printf("wdc_atapi_intr: warning: write only " 511 "%d of %d requested bytes\n", xfer->c_bcount, len); 512 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 513 bus_space_write_multi_2(chp->cmd_iot, 514 chp->cmd_ioh, wd_data, 515 (u_int16_t *)((char *)xfer->databuf + 516 xfer->c_skip), 517 xfer->c_bcount >> 1); 518 } else { 519 bus_space_write_multi_stream_2(chp->cmd_iot, 520 chp->cmd_ioh, wd_data, 521 (u_int16_t *)((char *)xfer->databuf + 522 xfer->c_skip), 523 xfer->c_bcount >> 1); 524 } 525 for (i = xfer->c_bcount; i < len; i += 2) 526 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 527 wd_data, 0); 528 xfer->c_skip += xfer->c_bcount; 529 xfer->c_bcount = 0; 530 } else { 531 if (drvp->drive_flags & DRIVE_CAP32) { 532 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 533 bus_space_write_multi_4(chp->data32iot, 534 chp->data32ioh, 0, 535 (u_int32_t *)((char *)xfer->databuf + 536 xfer->c_skip), 537 len >> 2); 538 else 539 bus_space_write_multi_stream_4(chp->data32iot, 540 chp->data32ioh, wd_data, 541 (u_int32_t *)((char *)xfer->databuf + 542 xfer->c_skip), 543 len >> 2); 544 545 xfer->c_skip += len & 0xfffffffc; 546 xfer->c_bcount -= len & 0xfffffffc; 547 len = len & 0x03; 548 } 549 if (len > 0) { 550 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 551 bus_space_write_multi_2(chp->cmd_iot, 552 chp->cmd_ioh, wd_data, 553 (u_int16_t *)((char *)xfer->databuf + 554 xfer->c_skip), 555 len >> 1); 556 else 557 bus_space_write_multi_stream_2(chp->cmd_iot, 558 chp->cmd_ioh, wd_data, 559 (u_int16_t *)((char *)xfer->databuf + 560 xfer->c_skip), 561 len >> 1); 562 xfer->c_skip += len; 563 xfer->c_bcount -= len; 564 } 565 } 566 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 567 chp->ch_flags |= WDCF_IRQ_WAIT; 568 } 569 return 1; 570 571 case PHASE_DATAIN: 572 /* Read data */ 573 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 574 if (((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 && 575 (xfer->c_flags & C_SENSE) == 0) || 576 (xfer->c_flags & C_DMA) != 0) { 577 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 578 if (xfer->c_flags & C_DMA) { 579 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 580 chp->channel, xfer->drive, dma_flags); 581 ata_dmaerr(drvp); 582 } 583 sc_xfer->error = XS_TIMEOUT; 584 wdc_atapi_reset(chp, xfer); 585 return 1; 586 } 587 if (xfer->c_bcount < len) { 588 printf("wdc_atapi_intr: warning: reading only " 589 "%d of %d bytes\n", xfer->c_bcount, len); 590 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 591 bus_space_read_multi_2(chp->cmd_iot, 592 chp->cmd_ioh, wd_data, 593 (u_int16_t *)((char *)xfer->databuf + 594 xfer->c_skip), 595 xfer->c_bcount >> 1); 596 } else { 597 bus_space_read_multi_stream_2(chp->cmd_iot, 598 chp->cmd_ioh, wd_data, 599 (u_int16_t *)((char *)xfer->databuf + 600 xfer->c_skip), 601 xfer->c_bcount >> 1); 602 } 603 wdcbit_bucket(chp, len - xfer->c_bcount); 604 xfer->c_skip += xfer->c_bcount; 605 xfer->c_bcount = 0; 606 } else { 607 if (drvp->drive_flags & DRIVE_CAP32) { 608 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 609 bus_space_read_multi_4(chp->data32iot, 610 chp->data32ioh, 0, 611 (u_int32_t *)((char *)xfer->databuf + 612 xfer->c_skip), 613 len >> 2); 614 else 615 bus_space_read_multi_stream_4(chp->data32iot, 616 chp->data32ioh, wd_data, 617 (u_int32_t *)((char *)xfer->databuf + 618 xfer->c_skip), 619 len >> 2); 620 621 xfer->c_skip += len & 0xfffffffc; 622 xfer->c_bcount -= len & 0xfffffffc; 623 len = len & 0x03; 624 } 625 if (len > 0) { 626 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 627 bus_space_read_multi_2(chp->cmd_iot, 628 chp->cmd_ioh, wd_data, 629 (u_int16_t *)((char *)xfer->databuf + 630 xfer->c_skip), 631 len >> 1); 632 else 633 bus_space_read_multi_stream_2(chp->cmd_iot, 634 chp->cmd_ioh, wd_data, 635 (u_int16_t *)((char *)xfer->databuf + 636 xfer->c_skip), 637 len >> 1); 638 xfer->c_skip += len; 639 xfer->c_bcount -=len; 640 } 641 } 642 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 643 chp->ch_flags |= WDCF_IRQ_WAIT; 644 } 645 return 1; 646 647 case PHASE_ABORTED: 648 case PHASE_COMPLETED: 649 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 650 /* turn off DMA channel */ 651 if (xfer->c_flags & C_DMA) { 652 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 653 chp->channel, xfer->drive, dma_flags); 654 if (xfer->c_flags & C_SENSE) 655 xfer->c_bcount -= 656 sizeof(sc_xfer->sense.scsi_sense); 657 else 658 xfer->c_bcount -= sc_xfer->datalen; 659 } 660 if (xfer->c_flags & C_SENSE) { 661 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 662 /* 663 * request sense failed ! it's not suppossed 664 * to be possible 665 */ 666 if (xfer->c_flags & C_DMA) 667 ata_dmaerr(drvp); 668 sc_xfer->error = XS_RESET; 669 wdc_atapi_reset(chp, xfer); 670 return (1); 671 } else if (xfer->c_bcount < 672 sizeof(sc_xfer->sense.scsi_sense)) { 673 /* use the sense we just read */ 674 sc_xfer->error = XS_SENSE; 675 } else { 676 /* 677 * command completed, but no data was read. 678 * use the short sense we saved previsouly. 679 */ 680 sc_xfer->error = XS_SHORTSENSE; 681 } 682 } else { 683 sc_xfer->resid = xfer->c_bcount; 684 if (chp->ch_status & WDCS_ERR) { 685 /* save the short sense */ 686 sc_xfer->error = XS_SHORTSENSE; 687 sc_xfer->sense.atapi_sense = chp->ch_error; 688 if ((sc_xfer->sc_link->quirks & 689 ADEV_NOSENSE) == 0) { 690 /* 691 * let the driver issue a 692 * 'request sense' 693 */ 694 xfer->databuf = &sc_xfer->sense; 695 xfer->c_bcount = 696 sizeof(sc_xfer->sense.scsi_sense); 697 xfer->c_skip = 0; 698 xfer->c_flags |= C_SENSE; 699 callout_stop(&chp->ch_callout); 700 wdc_atapi_start(chp, xfer); 701 return 1; 702 } 703 } else if (dma_err < 0) { 704 ata_dmaerr(drvp); 705 sc_xfer->error = XS_RESET; 706 wdc_atapi_reset(chp, xfer); 707 return (1); 708 } 709 } 710 if (xfer->c_bcount != 0) { 711 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 712 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 713 } 714 #ifdef DIAGNOSTIC 715 if (xfer->c_bcount < 0) { 716 printf("wdc_atapi_intr warning: bcount value " 717 "is %d after io\n", xfer->c_bcount); 718 } 719 #endif 720 break; 721 722 default: 723 if (++retries<500) { 724 DELAY(100); 725 chp->ch_status = bus_space_read_1(chp->cmd_iot, 726 chp->cmd_ioh, wd_status); 727 chp->ch_error = bus_space_read_1(chp->cmd_iot, 728 chp->cmd_ioh, wd_error); 729 goto again; 730 } 731 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 732 if (chp->ch_status & WDCS_ERR) { 733 sc_xfer->error = XS_SHORTSENSE; 734 sc_xfer->sense.atapi_sense = chp->ch_error; 735 } else { 736 if (xfer->c_flags & C_DMA) 737 ata_dmaerr(drvp); 738 sc_xfer->error = XS_RESET; 739 wdc_atapi_reset(chp, xfer); 740 return (1); 741 } 742 } 743 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 744 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 745 DEBUG_INTR); 746 wdc_atapi_done(chp, xfer); 747 return (1); 748 } 749 750 int 751 wdc_atapi_ctrl(chp, xfer, irq) 752 struct channel_softc *chp; 753 struct wdc_xfer *xfer; 754 int irq; 755 { 756 struct scsipi_xfer *sc_xfer = xfer->cmd; 757 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 758 char *errstring = NULL; 759 int delay = (irq == 0) ? ATAPI_DELAY : 0; 760 761 /* Ack interrupt done in wait_for_unbusy */ 762 again: 763 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 764 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 765 DEBUG_INTR | DEBUG_FUNCS); 766 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 767 WDSD_IBM | (xfer->drive << 4)); 768 switch (drvp->state) { 769 case PIOMODE: 770 piomode: 771 /* Don't try to set mode if controller can't be adjusted */ 772 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 773 goto ready; 774 /* Also don't try if the drive didn't report its mode */ 775 if ((drvp->drive_flags & DRIVE_MODE) == 0) 776 goto ready;; 777 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 778 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 779 drvp->state = PIOMODE_WAIT; 780 break; 781 case PIOMODE_WAIT: 782 errstring = "piomode"; 783 if (wait_for_unbusy(chp, delay)) 784 goto timeout; 785 if (chp->ch_status & WDCS_ERR) { 786 if (drvp->PIO_mode < 3) { 787 drvp->PIO_mode = 3; 788 goto piomode; 789 } else { 790 goto error; 791 } 792 } 793 /* fall through */ 794 795 case DMAMODE: 796 if (drvp->drive_flags & DRIVE_UDMA) { 797 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 798 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 799 } else if (drvp->drive_flags & DRIVE_DMA) { 800 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 801 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 802 } else { 803 goto ready; 804 } 805 drvp->state = DMAMODE_WAIT; 806 break; 807 case DMAMODE_WAIT: 808 errstring = "dmamode"; 809 if (wait_for_unbusy(chp, delay)) 810 goto timeout; 811 if (chp->ch_status & WDCS_ERR) 812 goto error; 813 /* fall through */ 814 815 case READY: 816 ready: 817 drvp->state = READY; 818 xfer->c_intr = wdc_atapi_intr; 819 callout_stop(&chp->ch_callout); 820 wdc_atapi_start(chp, xfer); 821 return 1; 822 } 823 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 824 chp->ch_flags |= WDCF_IRQ_WAIT; 825 xfer->c_intr = wdc_atapi_ctrl; 826 } else { 827 goto again; 828 } 829 return 1; 830 831 timeout: 832 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 833 return 0; /* IRQ was not for us */ 834 } 835 printf("%s:%d:%d: %s timed out\n", 836 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 837 sc_xfer->error = XS_TIMEOUT; 838 wdc_atapi_reset(chp, xfer); 839 return 1; 840 error: 841 printf("%s:%d:%d: %s ", 842 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 843 errstring); 844 printf("error (0x%x)\n", chp->ch_error); 845 sc_xfer->error = XS_SHORTSENSE; 846 sc_xfer->sense.atapi_sense = chp->ch_error; 847 wdc_atapi_reset(chp, xfer); 848 return 1; 849 } 850 851 void 852 wdc_atapi_done(chp, xfer) 853 struct channel_softc *chp; 854 struct wdc_xfer *xfer; 855 { 856 struct scsipi_xfer *sc_xfer = xfer->cmd; 857 858 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 859 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 860 (u_int)xfer->c_flags), DEBUG_XFERS); 861 callout_stop(&chp->ch_callout); 862 /* remove this command from xfer queue */ 863 wdc_free_xfer(chp, xfer); 864 sc_xfer->xs_status |= XS_STS_DONE; 865 866 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 867 scsipi_done(sc_xfer); 868 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 869 chp->ch_flags), DEBUG_XFERS); 870 wdcstart(chp); 871 } 872 873 void 874 wdc_atapi_reset(chp, xfer) 875 struct channel_softc *chp; 876 struct wdc_xfer *xfer; 877 { 878 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 879 struct scsipi_xfer *sc_xfer = xfer->cmd; 880 881 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 882 drvp->state = 0; 883 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 884 printf("%s:%d:%d: reset failed\n", 885 chp->wdc->sc_dev.dv_xname, chp->channel, 886 xfer->drive); 887 sc_xfer->error = XS_SELTIMEOUT; 888 } 889 wdc_atapi_done(chp, xfer); 890 return; 891 } 892
Indexes created Mon Sep 22 05:09:51 GMT 2025