atapi_wdc.c revision 1.18
1 /* $NetBSD: atapi_wdc.c,v 1.18 1999/02/21 00:52:05 hubertf 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 *)); 90 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *)); 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 int wdc_atapi_send_cmd __P((struct scsipi_xfer *sc_xfer)); 94 95 #define MAX_SIZE MAXPHYS 96 97 void 98 wdc_atapibus_attach(chp) 99 struct channel_softc *chp; 100 { 101 struct wdc_softc *wdc = chp->wdc; 102 int channel = chp->channel; 103 struct ata_atapi_attach aa_link; 104 105 /* 106 * Fill in the adapter. 107 */ 108 wdc->sc_atapi_adapter.scsipi_cmd = wdc_atapi_send_cmd; 109 wdc->sc_atapi_adapter.scsipi_minphys = wdc_atapi_minphys; 110 111 memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); 112 aa_link.aa_type = T_ATAPI; 113 aa_link.aa_channel = channel; 114 aa_link.aa_openings = 1; 115 aa_link.aa_drv_data = chp->ch_drive; /* pass the whole array */ 116 aa_link.aa_bus_private = &wdc->sc_atapi_adapter; 117 (void)config_found(&wdc->sc_dev, (void *)&aa_link, atapi_print); 118 } 119 120 void 121 wdc_atapi_minphys (struct buf *bp) 122 { 123 if(bp->b_bcount > MAX_SIZE) 124 bp->b_bcount = MAX_SIZE; 125 minphys(bp); 126 } 127 128 int 129 wdc_atapi_get_params(ab_link, drive, flags, id) 130 struct scsipi_link *ab_link; 131 u_int8_t drive; 132 int flags; 133 struct ataparams *id; 134 { 135 struct wdc_softc *wdc = (void*)ab_link->adapter_softc; 136 struct channel_softc *chp = 137 wdc->channels[ab_link->scsipi_atapi.channel]; 138 struct wdc_command wdc_c; 139 140 /* if no ATAPI device detected at wdc attach time, skip */ 141 /* 142 * XXX this will break scsireprobe if this is of any interest for 143 * ATAPI devices one day. 144 */ 145 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 146 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 147 drive), DEBUG_PROBE); 148 return -1; 149 } 150 memset(&wdc_c, 0, sizeof(struct wdc_command)); 151 wdc_c.r_command = ATAPI_SOFT_RESET; 152 wdc_c.r_st_bmask = 0; 153 wdc_c.r_st_pmask = 0; 154 wdc_c.flags = AT_POLL; 155 wdc_c.timeout = WDC_RESET_WAIT; 156 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 157 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 158 " drive %s:%d:%d: driver failed\n", 159 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 160 panic("wdc_atapi_get_params"); 161 } 162 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 163 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 164 "failed for drive %s:%d:%d: error 0x%x\n", 165 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 166 wdc_c.r_error), DEBUG_PROBE); 167 return -1; 168 } 169 chp->ch_drive[drive].state = 0; 170 171 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 172 173 /* Some ATAPI devices need a bit more time after software reset. */ 174 delay(5000); 175 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 176 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 177 "failed for drive %s:%d:%d: error 0x%x\n", 178 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 179 wdc_c.r_error), DEBUG_PROBE); 180 return -1; 181 } 182 return COMPLETE; 183 } 184 185 int 186 wdc_atapi_send_cmd(sc_xfer) 187 struct scsipi_xfer *sc_xfer; 188 { 189 struct wdc_softc *wdc = (void*)sc_xfer->sc_link->adapter_softc; 190 struct wdc_xfer *xfer; 191 struct ata_drive_datas *drvp; 192 int flags = sc_xfer->flags; 193 int channel = sc_xfer->sc_link->scsipi_atapi.channel; 194 int drive = sc_xfer->sc_link->scsipi_atapi.drive; 195 int s, ret; 196 197 WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d\n", 198 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 199 200 xfer = wdc_get_xfer(flags & SCSI_NOSLEEP ? WDC_NOSLEEP : WDC_CANSLEEP); 201 if (xfer == NULL) { 202 return TRY_AGAIN_LATER; 203 } 204 if (sc_xfer->flags & SCSI_POLL) 205 xfer->c_flags |= C_POLL; 206 drvp = &wdc->channels[channel]->ch_drive[drive]; 207 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 208 sc_xfer->datalen > 0) 209 xfer->c_flags |= C_DMA; 210 xfer->drive = drive; 211 xfer->c_flags |= C_ATAPI; 212 xfer->cmd = sc_xfer; 213 xfer->databuf = sc_xfer->data; 214 xfer->c_bcount = sc_xfer->datalen; 215 xfer->c_start = wdc_atapi_start; 216 xfer->c_intr = wdc_atapi_intr; 217 s = splbio(); 218 wdc_exec_xfer(wdc->channels[channel], xfer); 219 #ifdef DIAGNOSTIC 220 if ((sc_xfer->flags & SCSI_POLL) != 0 && 221 (sc_xfer->flags & ITSDONE) == 0) 222 panic("wdc_atapi_send_cmd: polled command not done"); 223 #endif 224 ret = (sc_xfer->flags & ITSDONE) ? COMPLETE : SUCCESSFULLY_QUEUED; 225 splx(s); 226 return ret; 227 } 228 229 void 230 wdc_atapi_start(chp, xfer) 231 struct channel_softc *chp; 232 struct wdc_xfer *xfer; 233 { 234 struct scsipi_xfer *sc_xfer = xfer->cmd; 235 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 236 237 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 238 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 239 sc_xfer->flags), DEBUG_XFERS); 240 /* Do control operations specially. */ 241 if (drvp->state < READY) { 242 if (drvp->state != PIOMODE) { 243 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 244 chp->wdc->sc_dev.dv_xname, chp->channel, 245 xfer->drive, drvp->state); 246 panic("wdc_atapi_start: bad state"); 247 } 248 wdc_atapi_ctrl(chp, xfer); 249 return; 250 } 251 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 252 WDSD_IBM | (xfer->drive << 4)); 253 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 254 printf("wdc_atapi_start: not ready, st = %02x\n", 255 chp->ch_status); 256 sc_xfer->error = XS_TIMEOUT; 257 wdc_atapi_reset(chp, xfer); 258 return; 259 } 260 261 /* 262 * Even with WDCS_ERR, the device should accept a command packet 263 * Limit length to what can be stuffed into the cylinder register 264 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 265 * but not all devices do that and it's not obvious from the 266 * ATAPI spec that that behaviour should be expected. If more 267 * data is necessary, multiple data transfer phases will be done. 268 */ 269 270 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 271 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 272 0, 0, 0, 273 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 274 275 /* 276 * If there is no interrupt for CMD input, busy-wait for it (done in 277 * the interrupt routine. If it is a polled command, call the interrupt 278 * routine until command is done. 279 */ 280 if ((sc_xfer->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || 281 sc_xfer->flags & SCSI_POLL) { 282 /* Wait for at last 400ns for status bit to be valid */ 283 delay(1); 284 if (wdc_atapi_intr(chp, xfer) == 0) { 285 sc_xfer->error = XS_TIMEOUT; 286 wdc_atapi_reset(chp, xfer); 287 return; 288 } 289 } 290 if (sc_xfer->flags & SCSI_POLL) { 291 while ((sc_xfer->flags & ITSDONE) == 0) { 292 /* Wait for at last 400ns for status bit to be valid */ 293 delay(1); 294 if (wdc_atapi_intr(chp, xfer) == 0) { 295 sc_xfer->error = XS_SELTIMEOUT; 296 /* do we know more ? */ 297 wdc_atapi_done(chp, xfer); 298 return; 299 } 300 } 301 } 302 } 303 304 int 305 wdc_atapi_intr(chp, xfer) 306 struct channel_softc *chp; 307 struct wdc_xfer *xfer; 308 { 309 struct scsipi_xfer *sc_xfer = xfer->cmd; 310 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 311 int len, phase, i, retries=0; 312 int ire, dma_err = 0; 313 int dma_flags = 0; 314 struct scsipi_generic _cmd_reqsense; 315 struct scsipi_sense *cmd_reqsense = 316 (struct scsipi_sense *)&_cmd_reqsense; 317 void *cmd; 318 319 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 320 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 321 322 /* Is it not a transfer, but a control operation? */ 323 if (drvp->state < READY) { 324 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 325 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 326 drvp->state); 327 panic("wdc_atapi_intr: bad state\n"); 328 } 329 /* Ack interrupt done in wait_for_unbusy */ 330 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 331 WDSD_IBM | (xfer->drive << 4)); 332 if (wait_for_unbusy(chp, sc_xfer->timeout) != 0) { 333 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 334 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 335 xfer->c_bcount, xfer->c_skip); 336 if (xfer->c_flags & C_DMA) 337 drvp->n_dmaerrs++; 338 sc_xfer->error = XS_TIMEOUT; 339 wdc_atapi_reset(chp, xfer); 340 return 1; 341 } 342 /* 343 * if the request sense command was aborted, report the short sense 344 * previously recorded, else continue normal processing 345 */ 346 347 if ((xfer->c_flags & C_SENSE) != 0 && 348 (chp->ch_status & WDCS_ERR) != 0 && 349 (chp->ch_error & WDCE_ABRT) != 0) { 350 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 351 "calling wdc_atapi_done(), sense 0x%x\n", 352 sc_xfer->sense.atapi_sense), DEBUG_INTR); 353 wdc_atapi_done(chp, xfer); 354 return 1; 355 } 356 357 if (xfer->c_flags & C_DMA) { 358 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 359 WDC_DMA_READ : 0; 360 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 361 } 362 again: 363 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 364 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 365 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 366 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 367 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 368 "ire 0x%x :", xfer->c_bcount, 369 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 370 371 switch (phase) { 372 case PHASE_CMDOUT: 373 if (xfer->c_flags & C_SENSE) { 374 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 375 cmd_reqsense->opcode = REQUEST_SENSE; 376 cmd_reqsense->length = xfer->c_bcount; 377 cmd = cmd_reqsense; 378 } else { 379 cmd = sc_xfer->cmd; 380 } 381 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 382 /* Init the DMA channel if necessary */ 383 if (xfer->c_flags & C_DMA) { 384 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 385 chp->channel, xfer->drive, 386 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 387 sc_xfer->error = XS_DRIVER_STUFFUP; 388 break; 389 } 390 } 391 /* send packet command */ 392 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 393 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 394 if (drvp->drive_flags & DRIVE_CAP32) { 395 bus_space_write_multi_4(chp->data32iot, 396 chp->data32ioh, 0, 397 (u_int32_t *)cmd, 398 sc_xfer->cmdlen >> 2); 399 } else { 400 bus_space_write_multi_2(chp->cmd_iot, 401 chp->cmd_ioh, wd_data, 402 (u_int16_t *)cmd, 403 sc_xfer->cmdlen >> 1); 404 } 405 } else { 406 if (drvp->drive_flags & DRIVE_CAP32) { 407 bus_space_write_multi_stream_4(chp->data32iot, 408 chp->data32ioh, 0, 409 (u_int32_t *)cmd, 410 sc_xfer->cmdlen >> 2); 411 } else { 412 bus_space_write_multi_stream_2(chp->cmd_iot, 413 chp->cmd_ioh, wd_data, 414 (u_int16_t *)cmd, 415 sc_xfer->cmdlen >> 1); 416 } 417 } 418 /* Start the DMA channel if necessary */ 419 if (xfer->c_flags & C_DMA) { 420 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 421 chp->channel, xfer->drive, dma_flags); 422 } 423 424 if ((sc_xfer->flags & SCSI_POLL) == 0) { 425 chp->ch_flags |= WDCF_IRQ_WAIT; 426 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 427 } 428 return 1; 429 430 case PHASE_DATAOUT: 431 /* write data */ 432 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 433 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 434 (xfer->c_flags & C_DMA) != 0) { 435 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 436 if (xfer->c_flags & C_DMA) { 437 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 438 chp->channel, xfer->drive, dma_flags); 439 drvp->n_dmaerrs++; 440 } 441 sc_xfer->error = XS_TIMEOUT; 442 wdc_atapi_reset(chp, xfer); 443 return 1; 444 } 445 if (xfer->c_bcount < len) { 446 printf("wdc_atapi_intr: warning: write only " 447 "%d of %d requested bytes\n", xfer->c_bcount, len); 448 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 449 bus_space_write_multi_2(chp->cmd_iot, 450 chp->cmd_ioh, wd_data, 451 (u_int16_t *)((char *)xfer->databuf + 452 xfer->c_skip), 453 xfer->c_bcount >> 1); 454 } else { 455 bus_space_write_multi_stream_2(chp->cmd_iot, 456 chp->cmd_ioh, wd_data, 457 (u_int16_t *)((char *)xfer->databuf + 458 xfer->c_skip), 459 xfer->c_bcount >> 1); 460 } 461 for (i = xfer->c_bcount; i < len; i += 2) 462 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 463 wd_data, 0); 464 xfer->c_skip += xfer->c_bcount; 465 xfer->c_bcount = 0; 466 } else { 467 if (drvp->drive_flags & DRIVE_CAP32) { 468 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 469 bus_space_write_multi_4(chp->data32iot, 470 chp->data32ioh, 0, 471 (u_int32_t *)((char *)xfer->databuf + 472 xfer->c_skip), 473 len >> 2); 474 else 475 bus_space_write_multi_stream_4(chp->data32iot, 476 chp->data32ioh, wd_data, 477 (u_int32_t *)((char *)xfer->databuf + 478 xfer->c_skip), 479 len >> 2); 480 481 xfer->c_skip += len & 0xfffffffc; 482 xfer->c_bcount -= len & 0xfffffffc; 483 len = len & 0x03; 484 } 485 if (len > 0) { 486 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 487 bus_space_write_multi_2(chp->cmd_iot, 488 chp->cmd_ioh, wd_data, 489 (u_int16_t *)((char *)xfer->databuf + 490 xfer->c_skip), 491 len >> 1); 492 else 493 bus_space_write_multi_stream_2(chp->cmd_iot, 494 chp->cmd_ioh, wd_data, 495 (u_int16_t *)((char *)xfer->databuf + 496 xfer->c_skip), 497 len >> 1); 498 xfer->c_skip += len; 499 xfer->c_bcount -= len; 500 } 501 } 502 if ((sc_xfer->flags & SCSI_POLL) == 0) { 503 chp->ch_flags |= WDCF_IRQ_WAIT; 504 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 505 } 506 return 1; 507 508 case PHASE_DATAIN: 509 /* Read data */ 510 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 511 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 512 (xfer->c_flags & C_SENSE) == 0) || 513 (xfer->c_flags & C_DMA) != 0) { 514 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 515 if (xfer->c_flags & C_DMA) { 516 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 517 chp->channel, xfer->drive, dma_flags); 518 drvp->n_dmaerrs++; 519 } 520 sc_xfer->error = XS_TIMEOUT; 521 wdc_atapi_reset(chp, xfer); 522 return 1; 523 } 524 if (xfer->c_bcount < len) { 525 printf("wdc_atapi_intr: warning: reading only " 526 "%d of %d bytes\n", xfer->c_bcount, len); 527 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 528 bus_space_read_multi_2(chp->cmd_iot, 529 chp->cmd_ioh, wd_data, 530 (u_int16_t *)((char *)xfer->databuf + 531 xfer->c_skip), 532 xfer->c_bcount >> 1); 533 } else { 534 bus_space_read_multi_stream_2(chp->cmd_iot, 535 chp->cmd_ioh, wd_data, 536 (u_int16_t *)((char *)xfer->databuf + 537 xfer->c_skip), 538 xfer->c_bcount >> 1); 539 } 540 wdcbit_bucket(chp, len - xfer->c_bcount); 541 xfer->c_skip += xfer->c_bcount; 542 xfer->c_bcount = 0; 543 } else { 544 if (drvp->drive_flags & DRIVE_CAP32) { 545 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 546 bus_space_read_multi_4(chp->data32iot, 547 chp->data32ioh, 0, 548 (u_int32_t *)((char *)xfer->databuf + 549 xfer->c_skip), 550 len >> 2); 551 else 552 bus_space_read_multi_stream_4(chp->data32iot, 553 chp->data32ioh, wd_data, 554 (u_int32_t *)((char *)xfer->databuf + 555 xfer->c_skip), 556 len >> 2); 557 558 xfer->c_skip += len & 0xfffffffc; 559 xfer->c_bcount -= len & 0xfffffffc; 560 len = len & 0x03; 561 } 562 if (len > 0) { 563 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 564 bus_space_read_multi_2(chp->cmd_iot, 565 chp->cmd_ioh, wd_data, 566 (u_int16_t *)((char *)xfer->databuf + 567 xfer->c_skip), 568 len >> 1); 569 else 570 bus_space_read_multi_stream_2(chp->cmd_iot, 571 chp->cmd_ioh, wd_data, 572 (u_int16_t *)((char *)xfer->databuf + 573 xfer->c_skip), 574 len >> 1); 575 xfer->c_skip += len; 576 xfer->c_bcount -=len; 577 } 578 } 579 if ((sc_xfer->flags & SCSI_POLL) == 0) { 580 chp->ch_flags |= WDCF_IRQ_WAIT; 581 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 582 } 583 return 1; 584 585 case PHASE_ABORTED: 586 case PHASE_COMPLETED: 587 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 588 /* turn off DMA channel */ 589 if (xfer->c_flags & C_DMA) { 590 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 591 chp->channel, xfer->drive, dma_flags); 592 xfer->c_bcount -= sc_xfer->datalen; 593 } 594 if (xfer->c_flags & C_SENSE) { 595 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 596 /* 597 * request sense failed ! it's not suppossed 598 * to be possible 599 */ 600 if (dma_err < 0) 601 drvp->n_dmaerrs++; 602 sc_xfer->error = XS_RESET; 603 wdc_atapi_reset(chp, xfer); 604 return (1); 605 } else if (xfer->c_bcount < 606 sizeof(sc_xfer->sense.scsi_sense)) { 607 /* use the sense we just read */ 608 sc_xfer->error = XS_SENSE; 609 } else { 610 /* 611 * command completed, but no data was read. 612 * use the short sense we saved previsouly. 613 */ 614 sc_xfer->error = XS_SHORTSENSE; 615 } 616 } else { 617 if (chp->ch_status & WDCS_ERR) { 618 /* save the short sense */ 619 sc_xfer->error = XS_SHORTSENSE; 620 sc_xfer->sense.atapi_sense = chp->ch_error; 621 if ((sc_xfer->sc_link->quirks & 622 ADEV_NOSENSE) == 0) { 623 /* 624 * let the driver issue a 625 * 'request sense' 626 */ 627 xfer->databuf = &sc_xfer->sense; 628 xfer->c_bcount = 629 sizeof(sc_xfer->sense.scsi_sense); 630 xfer->c_flags |= C_SENSE; 631 wdc_atapi_start(chp, xfer); 632 return 1; 633 } 634 } else if (dma_err < 0) { 635 drvp->n_dmaerrs++; 636 sc_xfer->error = XS_RESET; 637 wdc_atapi_reset(chp, xfer); 638 return (1); 639 } 640 } 641 if (xfer->c_bcount != 0) { 642 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 643 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 644 } 645 #ifdef DIAGNOSTIC 646 if (xfer->c_bcount < 0) { 647 printf("wdc_atapi_intr warning: bcount value " 648 "is %d after io\n", xfer->c_bcount); 649 } 650 #endif 651 break; 652 653 default: 654 if (++retries<500) { 655 DELAY(100); 656 chp->ch_status = bus_space_read_1(chp->cmd_iot, 657 chp->cmd_ioh, wd_status); 658 chp->ch_error = bus_space_read_1(chp->cmd_iot, 659 chp->cmd_ioh, wd_error); 660 goto again; 661 } 662 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 663 if (chp->ch_status & WDCS_ERR) { 664 sc_xfer->error = XS_SHORTSENSE; 665 sc_xfer->sense.atapi_sense = chp->ch_error; 666 } else { 667 sc_xfer->error = XS_RESET; 668 wdc_atapi_reset(chp, xfer); 669 return (1); 670 } 671 } 672 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 673 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 674 DEBUG_INTR); 675 wdc_atapi_done(chp, xfer); 676 return (1); 677 } 678 679 int 680 wdc_atapi_ctrl(chp, xfer) 681 struct channel_softc *chp; 682 struct wdc_xfer *xfer; 683 { 684 struct scsipi_xfer *sc_xfer = xfer->cmd; 685 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 686 char *errstring = NULL; 687 688 /* Ack interrupt done in wait_for_unbusy */ 689 again: 690 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 691 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 692 DEBUG_INTR | DEBUG_FUNCS); 693 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 694 WDSD_IBM | (xfer->drive << 4)); 695 switch (drvp->state) { 696 case PIOMODE: 697 /* Don't try to set mode if controller can't be adjusted */ 698 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 699 goto ready; 700 /* Also don't try if the drive didn't report its mode */ 701 if ((drvp->drive_flags & DRIVE_MODE) == 0) 702 goto ready;; 703 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 704 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 705 drvp->state = PIOMODE_WAIT; 706 break; 707 case PIOMODE_WAIT: 708 errstring = "piomode"; 709 if (wait_for_unbusy(chp, ATAPI_DELAY)) 710 goto timeout; 711 if (chp->ch_status & WDCS_ERR) 712 goto error; 713 /* fall through */ 714 715 case DMAMODE: 716 if (drvp->drive_flags & DRIVE_UDMA) { 717 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 718 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 719 } else if (drvp->drive_flags & DRIVE_DMA) { 720 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 721 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 722 } else { 723 goto ready; 724 } 725 drvp->state = DMAMODE_WAIT; 726 break; 727 case DMAMODE_WAIT: 728 errstring = "dmamode"; 729 if (wait_for_unbusy(chp, ATAPI_DELAY)) 730 goto timeout; 731 if (chp->ch_status & WDCS_ERR) 732 goto error; 733 /* fall through */ 734 735 case READY: 736 ready: 737 drvp->state = READY; 738 xfer->c_intr = wdc_atapi_intr; 739 wdc_atapi_start(chp, xfer); 740 return 1; 741 } 742 if ((sc_xfer->flags & SCSI_POLL) == 0) { 743 chp->ch_flags |= WDCF_IRQ_WAIT; 744 xfer->c_intr = wdc_atapi_ctrl; 745 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 746 } else { 747 goto again; 748 } 749 return 1; 750 751 timeout: 752 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 753 return 0; /* IRQ was not for us */ 754 } 755 printf("%s:%d:%d: %s timed out\n", 756 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 757 sc_xfer->error = XS_TIMEOUT; 758 wdc_atapi_reset(chp, xfer); 759 return 1; 760 error: 761 printf("%s:%d:%d: %s ", 762 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 763 errstring); 764 printf("error (0x%x)\n", chp->ch_error); 765 sc_xfer->error = XS_SHORTSENSE; 766 sc_xfer->sense.atapi_sense = chp->ch_error; 767 wdc_atapi_reset(chp, xfer); 768 return 1; 769 } 770 771 void 772 wdc_atapi_done(chp, xfer) 773 struct channel_softc *chp; 774 struct wdc_xfer *xfer; 775 { 776 struct scsipi_xfer *sc_xfer = xfer->cmd; 777 int need_done = xfer->c_flags & C_NEEDDONE; 778 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 779 780 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 781 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 782 (u_int)xfer->c_flags), DEBUG_XFERS); 783 sc_xfer->resid = xfer->c_bcount; 784 /* remove this command from xfer queue */ 785 xfer->c_skip = 0; 786 wdc_free_xfer(chp, xfer); 787 sc_xfer->flags |= ITSDONE; 788 if (sc_xfer->error == XS_NOERROR || 789 sc_xfer->error == XS_SENSE || 790 sc_xfer->error == XS_SHORTSENSE) { 791 drvp->n_dmaerrs = 0; 792 } else { 793 wdc_downgrade_mode(drvp); 794 } 795 796 if (need_done) { 797 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 798 scsipi_done(sc_xfer); 799 } 800 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 801 chp->ch_flags), DEBUG_XFERS); 802 wdcstart(chp); 803 } 804 805 void 806 wdc_atapi_reset(chp, xfer) 807 struct channel_softc *chp; 808 struct wdc_xfer *xfer; 809 { 810 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 811 struct scsipi_xfer *sc_xfer = xfer->cmd; 812 813 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 814 drvp->state = 0; 815 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 816 printf("%s:%d:%d: reset failed\n", 817 chp->wdc->sc_dev.dv_xname, chp->channel, 818 xfer->drive); 819 sc_xfer->error = XS_SELTIMEOUT; 820 } 821 wdc_atapi_done(chp, xfer); 822 return; 823 } 824
Indexes created Thu Sep 25 16:09:42 GMT 2025