atapi_wdc.c revision 1.4
1 /* $NetBSD: atapi_wdc.c,v 1.4 1998/10/13 09:34:01 bouyer 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 #define WDCDEBUG 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/kernel.h> 41 #include <sys/file.h> 42 #include <sys/stat.h> 43 #include <sys/buf.h> 44 #include <sys/malloc.h> 45 #include <sys/device.h> 46 #include <sys/syslog.h> 47 #include <sys/proc.h> 48 49 #include <vm/vm.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 #include <dev/scsipi/scsipi_all.h> 66 #include <dev/scsipi/scsipiconf.h> 67 #include <dev/scsipi/atapiconf.h> 68 69 #define DEBUG_INTR 0x01 70 #define DEBUG_XFERS 0x02 71 #define DEBUG_STATUS 0x04 72 #define DEBUG_FUNCS 0x08 73 #define DEBUG_PROBE 0x10 74 #ifdef WDCDEBUG 75 int wdcdebug_atapi_mask = 0; 76 #define WDCDEBUG_PRINT(args, level) \ 77 if (wdcdebug_atapi_mask & (level)) \ 78 printf args 79 #else 80 #define WDCDEBUG_PRINT(args, level) 81 #endif 82 83 #define ATAPI_DELAY 10 /* 10 ms, this is used only before sending a cmd */ 84 85 void wdc_atapi_minphys __P((struct buf *bp)); 86 void wdc_atapi_start __P((struct channel_softc *,struct wdc_xfer *)); 87 int wdc_atapi_intr __P((struct channel_softc *, struct wdc_xfer *)); 88 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *)); 89 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 90 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 91 int wdc_atapi_send_cmd __P((struct scsipi_xfer *sc_xfer)); 92 93 #define MAX_SIZE MAXPHYS 94 95 static struct scsipi_adapter wdc_switch = { 96 wdc_atapi_send_cmd, 97 wdc_atapi_minphys, 98 NULL, /* scsipi_ioctl */ 99 }; 100 101 void 102 wdc_atapibus_attach(chp) 103 struct channel_softc *chp; 104 { 105 struct wdc_softc *wdc = chp->wdc; 106 int channel = chp->channel; 107 struct ata_atapi_attach aa_link; 108 109 memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); 110 aa_link.aa_type = T_ATAPI; 111 aa_link.aa_channel = channel; 112 aa_link.aa_openings = 1; 113 aa_link.aa_drv_data = chp->ch_drive; /* pass the whole array */ 114 aa_link.aa_bus_private = &wdc_switch; 115 (void)config_found(&wdc->sc_dev, (void *)&aa_link, atapi_print); 116 } 117 118 void 119 wdc_atapi_minphys (struct buf *bp) 120 { 121 if(bp->b_bcount > MAX_SIZE) 122 bp->b_bcount = MAX_SIZE; 123 minphys(bp); 124 } 125 126 int 127 wdc_atapi_get_params(ab_link, drive, flags, id) 128 struct scsipi_link *ab_link; 129 u_int8_t drive; 130 int flags; 131 struct ataparams *id; 132 { 133 struct wdc_softc *wdc = (void*)ab_link->adapter_softc; 134 struct channel_softc *chp = 135 &wdc->channels[ab_link->scsipi_atapi.channel]; 136 struct wdc_command wdc_c; 137 138 /* if no ATAPI device detected at wdc attach time, skip */ 139 /* 140 * XXX this will break scsireprobe if this is of any interest for 141 * ATAPI devices one day. 142 */ 143 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 144 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 145 drive), DEBUG_PROBE); 146 return -1; 147 } 148 memset(&wdc_c, 0, sizeof(struct wdc_command)); 149 wdc_c.r_command = ATAPI_SOFT_RESET; 150 wdc_c.r_st_bmask = 0; 151 wdc_c.r_st_pmask = 0; 152 wdc_c.flags = AT_POLL; 153 wdc_c.timeout = WDC_RESET_WAIT; 154 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 155 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 156 " drive %s:%d:%d: driver failed\n", 157 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 158 panic("wdc_atapi_get_params"); 159 } 160 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 161 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 162 "failed for drive %s:%d:%d: error 0x%x\n", 163 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 164 wdc_c.r_error), DEBUG_PROBE); 165 return -1; 166 } 167 chp->ch_drive[drive].state = 0; 168 169 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 170 171 /* Some ATAPI devices need a bit more time after software reset. */ 172 delay(5000); 173 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 174 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 175 "failed for drive %s:%d:%d: error 0x%x\n", 176 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 177 wdc_c.r_error), DEBUG_PROBE); 178 return -1; 179 } 180 return COMPLETE; 181 } 182 183 int 184 wdc_atapi_send_cmd(sc_xfer) 185 struct scsipi_xfer *sc_xfer; 186 { 187 struct scsipi_link *sc_link = sc_xfer->sc_link; 188 struct wdc_softc *wdc = (void*)sc_link->adapter_softc; 189 struct wdc_xfer *xfer; 190 struct ata_drive_datas *drvp; 191 int flags = sc_xfer->flags; 192 int channel = sc_xfer->sc_link->scsipi_atapi.channel; 193 int drive = sc_xfer->sc_link->scsipi_atapi.drive; 194 int s, ret; 195 196 WDCDEBUG_PRINT(("wdc_atapi_send_cmd\n"), DEBUG_XFERS); 197 198 xfer = wdc_get_xfer(flags & SCSI_NOSLEEP ? WDC_NOSLEEP : WDC_CANSLEEP); 199 if (xfer == NULL) { 200 return TRY_AGAIN_LATER; 201 } 202 if (sc_xfer->flags & SCSI_POLL) 203 xfer->c_flags |= C_POLL; 204 drvp = &wdc->channels[channel].ch_drive[drive]; 205 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 206 sc_xfer->datalen > 0) 207 xfer->c_flags |= C_DMA; 208 xfer->drive = drive; 209 xfer->c_flags |= C_ATAPI; 210 xfer->cmd = sc_xfer; 211 xfer->databuf = sc_xfer->data; 212 xfer->c_bcount = sc_xfer->datalen; 213 xfer->c_start = wdc_atapi_start; 214 xfer->c_intr = wdc_atapi_intr; 215 s = splbio(); 216 wdc_exec_xfer(&wdc->channels[channel], xfer); 217 #ifdef DIAGNOSTIC 218 if ((sc_xfer->flags & SCSI_POLL) != 0 && 219 (sc_xfer->flags & ITSDONE) == 0) 220 panic("wdc_atapi_send_cmd: polled command not done"); 221 #endif 222 ret = (sc_xfer->flags & ITSDONE) ? COMPLETE : SUCCESSFULLY_QUEUED; 223 splx(s); 224 return ret; 225 } 226 227 void 228 wdc_atapi_start(chp, xfer) 229 struct channel_softc *chp; 230 struct wdc_xfer *xfer; 231 { 232 struct scsipi_xfer *sc_xfer = xfer->cmd; 233 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 234 235 WDCDEBUG_PRINT(("wdc_atapi_start, scsi flags 0x%x \n",sc_xfer->flags), 236 DEBUG_XFERS); 237 /* Do control operations specially. */ 238 if (drvp->state < READY) { 239 if (drvp->state != PIOMODE) { 240 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 241 chp->wdc->sc_dev.dv_xname, chp->channel, 242 xfer->drive, drvp->state); 243 panic("wdc_atapi_start: bad state"); 244 } 245 wdc_atapi_ctrl(chp, xfer); 246 return; 247 } 248 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 249 WDSD_IBM | (xfer->drive << 4)); 250 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 251 printf("wdc_atapi_start: not ready, st = %02x\n", 252 chp->ch_status); 253 sc_xfer->error = XS_TIMEOUT; 254 wdc_atapi_reset(chp, xfer); 255 return; 256 } 257 258 /* 259 * Even with WDCS_ERR, the device should accept a command packet 260 * Limit length to what can be stuffed into the cylinder register 261 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 262 * but not all devices do that and it's not obvious from the 263 * ATAPI spec that that behaviour should be expected. If more 264 * data is necessary, multiple data transfer phases will be done. 265 */ 266 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 267 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 268 0, 0, 0, 269 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 270 271 /* 272 * If there is no interrupt for CMD input, busy-wait for it (done in 273 * the interrupt routine. If it is a polled command, call the interrupt 274 * routine until command is done. 275 */ 276 if ((sc_xfer->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || 277 sc_xfer->flags & SCSI_POLL) { 278 /* Wait for at last 400ns for status bit to be valid */ 279 delay(1); 280 if (wdc_atapi_intr(chp, xfer) == 0) { 281 sc_xfer->error = XS_TIMEOUT; 282 wdc_atapi_reset(chp, xfer); 283 return; 284 } 285 } 286 if (sc_xfer->flags & SCSI_POLL) { 287 while ((sc_xfer->flags & ITSDONE) == 0) { 288 /* Wait for at last 400ns for status bit to be valid */ 289 delay(1); 290 if (wdc_atapi_intr(chp, xfer) == 0) { 291 sc_xfer->error = XS_SELTIMEOUT; 292 /* do we know more ? */ 293 wdc_atapi_done(chp, xfer); 294 return; 295 } 296 } 297 } 298 } 299 300 int 301 wdc_atapi_intr(chp, xfer) 302 struct channel_softc *chp; 303 struct wdc_xfer *xfer; 304 { 305 struct scsipi_xfer *sc_xfer = xfer->cmd; 306 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 307 int len, phase, i, retries=0; 308 int ire, dma_err = 0; 309 int dma_flags = 0; 310 311 WDCDEBUG_PRINT(("wdc_atapi_intr\n"), DEBUG_INTR); 312 313 /* Is it not a transfer, but a control operation? */ 314 if (drvp->state < READY) { 315 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 316 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 317 drvp->state); 318 panic("wdc_atapi_intr: bad state\n"); 319 } 320 /* Ack interrupt done in wait_for_unbusy */ 321 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 322 WDSD_IBM | (xfer->drive << 4)); 323 if (wait_for_unbusy(chp, sc_xfer->timeout) != 0) { 324 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 325 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 326 xfer->c_bcount, xfer->c_skip); 327 sc_xfer->error = XS_TIMEOUT; 328 wdc_atapi_reset(chp, xfer); 329 return 1; 330 } 331 /* Error here only if the command is aborted */ 332 if ((chp->ch_status & WDCS_ERR) != 0 && 333 (chp->ch_error & WDCE_ABRT) != 0) { 334 sc_xfer->error = XS_SENSE; 335 sc_xfer->sense.atapi_sense = chp->ch_error; 336 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done(), " 337 "sense 0x%x\n", sc_xfer->sense.atapi_sense), DEBUG_INTR); 338 wdc_atapi_done(chp, xfer); 339 return 1; 340 } 341 342 if (xfer->c_flags & C_DMA) { 343 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 344 WDC_DMA_READ : 0; 345 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 346 } 347 again: 348 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 349 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 350 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 351 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 352 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 353 "ire 0x%x :", xfer->c_bcount, 354 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 355 356 switch (phase) { 357 case PHASE_CMDOUT: 358 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 359 /* Init the DMA channel if necessary */ 360 if (xfer->c_flags & C_DMA) { 361 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 362 chp->channel, xfer->drive, 363 xfer->databuf, sc_xfer->datalen, dma_flags) != 0) { 364 sc_xfer->error = XS_DRIVER_STUFFUP; 365 break; 366 } 367 } 368 /* send packet command */ 369 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 370 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 371 if (drvp->drive_flags & DRIVE_CAP32) { 372 bus_space_write_multi_4(chp->data32iot, 373 chp->data32ioh, 0, 374 (u_int32_t *)sc_xfer->cmd, 375 sc_xfer->cmdlen >> 2); 376 } else { 377 bus_space_write_multi_2(chp->cmd_iot, 378 chp->cmd_ioh, wd_data, 379 (u_int16_t *)sc_xfer->cmd, 380 sc_xfer->cmdlen >> 1); 381 } 382 } else { 383 if (drvp->drive_flags & DRIVE_CAP32) { 384 bus_space_write_multi_stream_4(chp->data32iot, 385 chp->data32ioh, 0, 386 (u_int32_t *)sc_xfer->cmd, 387 sc_xfer->cmdlen >> 2); 388 } else { 389 bus_space_write_multi_stream_2(chp->cmd_iot, 390 chp->cmd_ioh, wd_data, 391 (u_int16_t *)sc_xfer->cmd, 392 sc_xfer->cmdlen >> 1); 393 } 394 } 395 /* Start the DMA channel if necessary */ 396 if (xfer->c_flags & C_DMA) { 397 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 398 chp->channel, xfer->drive, dma_flags); 399 } 400 401 if ((sc_xfer->flags & SCSI_POLL) == 0) { 402 chp->ch_flags |= WDCF_IRQ_WAIT; 403 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 404 } 405 return 1; 406 407 case PHASE_DATAOUT: 408 /* write data */ 409 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 410 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 411 (xfer->c_flags & C_DMA) != 0) { 412 printf("wdc_atapi_intr: bad data phase DATAOUT"); 413 if (xfer->c_flags & C_DMA) { 414 printf(", falling back to PIO\n"); 415 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 416 } 417 sc_xfer->error = XS_TIMEOUT; 418 wdc_atapi_reset(chp, xfer); 419 return 1; 420 } 421 if (xfer->c_bcount < len) { 422 printf("wdc_atapi_intr: warning: write only " 423 "%d of %d requested bytes\n", xfer->c_bcount, len); 424 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 425 bus_space_write_multi_2(chp->cmd_iot, 426 chp->cmd_ioh, wd_data, 427 xfer->databuf + xfer->c_skip, 428 xfer->c_bcount >> 1); 429 } else { 430 bus_space_write_multi_stream_2(chp->cmd_iot, 431 chp->cmd_ioh, wd_data, 432 xfer->databuf + xfer->c_skip, 433 xfer->c_bcount >> 1); 434 } 435 for (i = xfer->c_bcount; i < len; i += 2) 436 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 437 wd_data, 0); 438 xfer->c_skip += xfer->c_bcount; 439 xfer->c_bcount = 0; 440 } else { 441 if (drvp->drive_flags & DRIVE_CAP32) { 442 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 443 bus_space_write_multi_4(chp->data32iot, 444 chp->data32ioh, 0, 445 xfer->databuf + xfer->c_skip, len >> 2); 446 else 447 bus_space_write_multi_stream_4(chp->cmd_iot, 448 chp->cmd_ioh, wd_data, 449 xfer->databuf + xfer->c_skip, len >> 2); 450 451 xfer->c_skip += len & 0xfffffffc; 452 xfer->c_bcount -= len & 0xfffffffc; 453 len = len & 0x03; 454 } 455 if (len > 0) { 456 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 457 bus_space_write_multi_2(chp->cmd_iot, 458 chp->cmd_ioh, wd_data, 459 xfer->databuf + xfer->c_skip, len >> 1); 460 else 461 bus_space_write_multi_stream_2(chp->cmd_iot, 462 chp->cmd_ioh, wd_data, 463 xfer->databuf + xfer->c_skip, len >> 1); 464 xfer->c_skip += len; 465 xfer->c_bcount -= len; 466 } 467 } 468 if ((sc_xfer->flags & SCSI_POLL) == 0) { 469 chp->ch_flags |= WDCF_IRQ_WAIT; 470 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 471 } 472 return 1; 473 474 case PHASE_DATAIN: 475 /* Read data */ 476 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 477 if ((sc_xfer->flags & SCSI_DATA_IN) == 0 || 478 (xfer->c_flags & C_DMA) != 0) { 479 printf("wdc_atapi_intr: bad data phase DATAIN"); 480 if (xfer->c_flags & C_DMA) { 481 printf(", falling back to PIO\n"); 482 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 483 } 484 sc_xfer->error = XS_TIMEOUT; 485 wdc_atapi_reset(chp, xfer); 486 return 1; 487 } 488 if (xfer->c_bcount < len) { 489 printf("wdc_atapi_intr: warning: reading only " 490 "%d of %d bytes\n", xfer->c_bcount, len); 491 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 492 bus_space_read_multi_2(chp->cmd_iot, 493 chp->cmd_ioh, wd_data, 494 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 495 } else { 496 bus_space_read_multi_stream_2(chp->cmd_iot, 497 chp->cmd_ioh, wd_data, 498 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 499 } 500 wdcbit_bucket(chp, len - xfer->c_bcount); 501 xfer->c_skip += xfer->c_bcount; 502 xfer->c_bcount = 0; 503 } else { 504 if (drvp->drive_flags & DRIVE_CAP32) { 505 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 506 bus_space_read_multi_4(chp->data32iot, 507 chp->data32ioh, 0, 508 xfer->databuf + xfer->c_skip, len >> 2); 509 else 510 bus_space_read_multi_stream_4(chp->cmd_iot, 511 chp->cmd_ioh, wd_data, 512 xfer->databuf + xfer->c_skip, len >> 2); 513 514 xfer->c_skip += len & 0xfffffffc; 515 xfer->c_bcount -= len & 0xfffffffc; 516 len = len & 0x03; 517 } 518 if (len > 0) { 519 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 520 bus_space_read_multi_2(chp->cmd_iot, 521 chp->cmd_ioh, wd_data, 522 xfer->databuf + xfer->c_skip, len >> 1); 523 else 524 bus_space_read_multi_stream_2(chp->cmd_iot, 525 chp->cmd_ioh, wd_data, 526 xfer->databuf + xfer->c_skip, len >> 1); 527 xfer->c_skip += len; 528 xfer->c_bcount -=len; 529 } 530 } 531 if ((sc_xfer->flags & SCSI_POLL) == 0) { 532 chp->ch_flags |= WDCF_IRQ_WAIT; 533 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 534 } 535 return 1; 536 537 case PHASE_ABORTED: 538 case PHASE_COMPLETED: 539 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 540 /* turn off DMA channel */ 541 if (xfer->c_flags & C_DMA) { 542 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 543 chp->channel, xfer->drive, dma_flags); 544 xfer->c_bcount -= sc_xfer->datalen; 545 } 546 547 if (chp->ch_status & WDCS_ERR) { 548 sc_xfer->error = XS_SENSE; 549 sc_xfer->sense.atapi_sense = chp->ch_error; 550 } else if (dma_err < 0) { 551 sc_xfer->error = XS_DRIVER_STUFFUP; 552 } 553 #ifdef DIAGNOSTIC 554 if (xfer->c_bcount != 0) { 555 printf("wdc_atapi_intr warning: bcount value " 556 "is %d after io\n", xfer->c_bcount); 557 } 558 #endif 559 break; 560 561 default: 562 if (++retries<500) { 563 DELAY(100); 564 chp->ch_status = bus_space_read_1(chp->cmd_iot, 565 chp->cmd_ioh, wd_status); 566 chp->ch_error = bus_space_read_1(chp->cmd_iot, 567 chp->cmd_ioh, wd_error); 568 goto again; 569 } 570 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 571 if (chp->ch_status & WDCS_ERR) { 572 sc_xfer->error = XS_SENSE; 573 sc_xfer->sense.atapi_sense = chp->ch_error; 574 } else { 575 sc_xfer->error = XS_DRIVER_STUFFUP; 576 } 577 } 578 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 579 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 580 DEBUG_INTR); 581 wdc_atapi_done(chp, xfer); 582 return (1); 583 } 584 585 int 586 wdc_atapi_ctrl(chp, xfer) 587 struct channel_softc *chp; 588 struct wdc_xfer *xfer; 589 { 590 struct scsipi_xfer *sc_xfer = xfer->cmd; 591 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 592 char *errstring = NULL; 593 594 /* Ack interrupt done in wait_for_unbusy */ 595 again: 596 WDCDEBUG_PRINT(("wdc_atapi_ctrl state %d\n", drvp->state), 597 DEBUG_INTR | DEBUG_FUNCS); 598 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 599 WDSD_IBM | (xfer->drive << 4)); 600 switch (drvp->state) { 601 case PIOMODE: 602 /* Don't try to set mode if controller can't be adjusted */ 603 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 604 goto ready; 605 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 606 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 607 drvp->state = PIOMODE_WAIT; 608 break; 609 case PIOMODE_WAIT: 610 errstring = "piomode"; 611 if (wait_for_unbusy(chp, ATAPI_DELAY)) 612 goto timeout; 613 if (chp->ch_status & WDCS_ERR) 614 goto error; 615 /* fall through */ 616 617 case DMAMODE: 618 if (drvp->drive_flags & DRIVE_UDMA) { 619 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 620 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 621 } else if (drvp->drive_flags & DRIVE_DMA) { 622 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 623 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 624 } else { 625 goto ready; 626 } 627 drvp->state = DMAMODE_WAIT; 628 break; 629 case DMAMODE_WAIT: 630 errstring = "dmamode"; 631 if (wait_for_unbusy(chp, ATAPI_DELAY)) 632 goto timeout; 633 if (chp->ch_status & WDCS_ERR) 634 goto error; 635 /* fall through */ 636 637 case READY: 638 ready: 639 drvp->state = READY; 640 xfer->c_intr = wdc_atapi_intr; 641 wdc_atapi_start(chp, xfer); 642 return 1; 643 } 644 if ((sc_xfer->flags & SCSI_POLL) == 0) { 645 chp->ch_flags |= WDCF_IRQ_WAIT; 646 xfer->c_intr = wdc_atapi_ctrl; 647 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 648 } else { 649 goto again; 650 } 651 return 1; 652 653 timeout: 654 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 655 return 0; /* IRQ was not for us */ 656 } 657 printf("%s:%d:%d: %s timed out\n", 658 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 659 sc_xfer->error = XS_TIMEOUT; 660 wdc_atapi_reset(chp, xfer); 661 return 1; 662 error: 663 printf("%s:%d:%d: %s ", 664 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 665 errstring); 666 printf("error (0x%x)\n", chp->ch_error); 667 sc_xfer->error = XS_SENSE; 668 sc_xfer->sense.atapi_sense = chp->ch_error; 669 wdc_atapi_reset(chp, xfer); 670 return 1; 671 } 672 673 void 674 wdc_atapi_done(chp, xfer) 675 struct channel_softc *chp; 676 struct wdc_xfer *xfer; 677 { 678 struct scsipi_xfer *sc_xfer = xfer->cmd; 679 struct wdc_softc *wdc = chp->wdc; 680 int need_done = xfer->c_flags & C_NEEDDONE; 681 682 WDCDEBUG_PRINT(("wdc_atapi_done: flags 0x%x\n", (u_int)xfer->c_flags), 683 DEBUG_XFERS); 684 sc_xfer->resid = xfer->c_bcount; 685 /* remove this command from xfer queue */ 686 xfer->c_skip = 0; 687 wdc_free_xfer(chp, xfer); 688 sc_xfer->flags |= ITSDONE; 689 if (need_done) { 690 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 691 scsipi_done(sc_xfer); 692 } 693 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 694 chp->ch_flags), DEBUG_XFERS); 695 wdcstart(wdc, chp->channel); 696 } 697 698 void 699 wdc_atapi_reset(chp, xfer) 700 struct channel_softc *chp; 701 struct wdc_xfer *xfer; 702 { 703 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 704 struct scsipi_xfer *sc_xfer = xfer->cmd; 705 706 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 707 drvp->state = 0; 708 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 709 printf("%s:%d:%d: reset failed\n", 710 chp->wdc->sc_dev.dv_xname, chp->channel, 711 xfer->drive); 712 sc_xfer->error = XS_SELTIMEOUT; 713 wdc_atapi_done(chp, xfer); 714 return; 715 } 716 wdc_atapi_done(chp, xfer); 717 return; 718 } 719
Indexes created Tue Sep 23 14:10:03 GMT 2025