atapi_wdc.c revision 1.16
1 /* $NetBSD: atapi_wdc.c,v 1.16 1999/02/02 12:59:31 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 void 96 wdc_atapibus_attach(chp) 97 struct channel_softc *chp; 98 { 99 struct wdc_softc *wdc = chp->wdc; 100 int channel = chp->channel; 101 struct ata_atapi_attach aa_link; 102 103 /* 104 * Fill in the adapter. 105 */ 106 wdc->sc_atapi_adapter.scsipi_cmd = wdc_atapi_send_cmd; 107 wdc->sc_atapi_adapter.scsipi_minphys = wdc_atapi_minphys; 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->sc_atapi_adapter; 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 wdc_softc *wdc = (void*)sc_xfer->sc_link->adapter_softc; 188 struct wdc_xfer *xfer; 189 struct ata_drive_datas *drvp; 190 int flags = sc_xfer->flags; 191 int channel = sc_xfer->sc_link->scsipi_atapi.channel; 192 int drive = sc_xfer->sc_link->scsipi_atapi.drive; 193 int s, ret; 194 195 WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d\n", 196 wdc->sc_dev.dv_xname, channel, drive), 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 %s:%d:%d, scsi flags 0x%x \n", 236 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 237 sc_xfer->flags), DEBUG_XFERS); 238 /* Do control operations specially. */ 239 if (drvp->state < READY) { 240 if (drvp->state != PIOMODE) { 241 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 242 chp->wdc->sc_dev.dv_xname, chp->channel, 243 xfer->drive, drvp->state); 244 panic("wdc_atapi_start: bad state"); 245 } 246 wdc_atapi_ctrl(chp, xfer); 247 return; 248 } 249 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 250 WDSD_IBM | (xfer->drive << 4)); 251 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 252 printf("wdc_atapi_start: not ready, st = %02x\n", 253 chp->ch_status); 254 sc_xfer->error = XS_TIMEOUT; 255 wdc_atapi_reset(chp, xfer); 256 return; 257 } 258 259 /* 260 * Even with WDCS_ERR, the device should accept a command packet 261 * Limit length to what can be stuffed into the cylinder register 262 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 263 * but not all devices do that and it's not obvious from the 264 * ATAPI spec that that behaviour should be expected. If more 265 * data is necessary, multiple data transfer phases will be done. 266 */ 267 268 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 269 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 270 0, 0, 0, 271 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 272 273 /* 274 * If there is no interrupt for CMD input, busy-wait for it (done in 275 * the interrupt routine. If it is a polled command, call the interrupt 276 * routine until command is done. 277 */ 278 if ((sc_xfer->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || 279 sc_xfer->flags & SCSI_POLL) { 280 /* Wait for at last 400ns for status bit to be valid */ 281 delay(1); 282 if (wdc_atapi_intr(chp, xfer) == 0) { 283 sc_xfer->error = XS_TIMEOUT; 284 wdc_atapi_reset(chp, xfer); 285 return; 286 } 287 } 288 if (sc_xfer->flags & SCSI_POLL) { 289 while ((sc_xfer->flags & ITSDONE) == 0) { 290 /* Wait for at last 400ns for status bit to be valid */ 291 delay(1); 292 if (wdc_atapi_intr(chp, xfer) == 0) { 293 sc_xfer->error = XS_SELTIMEOUT; 294 /* do we know more ? */ 295 wdc_atapi_done(chp, xfer); 296 return; 297 } 298 } 299 } 300 } 301 302 int 303 wdc_atapi_intr(chp, xfer) 304 struct channel_softc *chp; 305 struct wdc_xfer *xfer; 306 { 307 struct scsipi_xfer *sc_xfer = xfer->cmd; 308 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 309 int len, phase, i, retries=0; 310 int ire, dma_err = 0; 311 int dma_flags = 0; 312 struct scsipi_generic _cmd_reqsense; 313 struct scsipi_sense *cmd_reqsense = 314 (struct scsipi_sense *)&_cmd_reqsense; 315 void *cmd; 316 317 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 318 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 319 320 /* Is it not a transfer, but a control operation? */ 321 if (drvp->state < READY) { 322 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 323 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 324 drvp->state); 325 panic("wdc_atapi_intr: bad state\n"); 326 } 327 /* Ack interrupt done in wait_for_unbusy */ 328 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 329 WDSD_IBM | (xfer->drive << 4)); 330 if (wait_for_unbusy(chp, sc_xfer->timeout) != 0) { 331 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 332 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 333 xfer->c_bcount, xfer->c_skip); 334 if (xfer->c_flags & C_DMA) 335 drvp->n_dmaerrs++; 336 sc_xfer->error = XS_TIMEOUT; 337 wdc_atapi_reset(chp, xfer); 338 return 1; 339 } 340 /* 341 * if the request sense command was aborted, report the short sense 342 * previously recorded, else continue normal processing 343 */ 344 345 if ((xfer->c_flags & C_SENSE) != 0 && 346 (chp->ch_status & WDCS_ERR) != 0 && 347 (chp->ch_error & WDCE_ABRT) != 0) { 348 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 349 "calling wdc_atapi_done(), sense 0x%x\n", 350 sc_xfer->sense.atapi_sense), DEBUG_INTR); 351 wdc_atapi_done(chp, xfer); 352 return 1; 353 } 354 355 if (xfer->c_flags & C_DMA) { 356 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 357 WDC_DMA_READ : 0; 358 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 359 } 360 again: 361 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 362 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 363 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 364 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 365 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 366 "ire 0x%x :", xfer->c_bcount, 367 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 368 369 switch (phase) { 370 case PHASE_CMDOUT: 371 if (xfer->c_flags & C_SENSE) { 372 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 373 cmd_reqsense->opcode = REQUEST_SENSE; 374 cmd_reqsense->length = xfer->c_bcount; 375 cmd = cmd_reqsense; 376 } else { 377 cmd = sc_xfer->cmd; 378 } 379 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 380 /* Init the DMA channel if necessary */ 381 if (xfer->c_flags & C_DMA) { 382 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 383 chp->channel, xfer->drive, 384 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 385 sc_xfer->error = XS_DRIVER_STUFFUP; 386 break; 387 } 388 } 389 /* send packet command */ 390 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 391 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 392 if (drvp->drive_flags & DRIVE_CAP32) { 393 bus_space_write_multi_4(chp->data32iot, 394 chp->data32ioh, 0, 395 (u_int32_t *)cmd, 396 sc_xfer->cmdlen >> 2); 397 } else { 398 bus_space_write_multi_2(chp->cmd_iot, 399 chp->cmd_ioh, wd_data, 400 (u_int16_t *)cmd, 401 sc_xfer->cmdlen >> 1); 402 } 403 } else { 404 if (drvp->drive_flags & DRIVE_CAP32) { 405 bus_space_write_multi_stream_4(chp->data32iot, 406 chp->data32ioh, 0, 407 (u_int32_t *)cmd, 408 sc_xfer->cmdlen >> 2); 409 } else { 410 bus_space_write_multi_stream_2(chp->cmd_iot, 411 chp->cmd_ioh, wd_data, 412 (u_int16_t *)cmd, 413 sc_xfer->cmdlen >> 1); 414 } 415 } 416 /* Start the DMA channel if necessary */ 417 if (xfer->c_flags & C_DMA) { 418 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 419 chp->channel, xfer->drive, dma_flags); 420 } 421 422 if ((sc_xfer->flags & SCSI_POLL) == 0) { 423 chp->ch_flags |= WDCF_IRQ_WAIT; 424 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 425 } 426 return 1; 427 428 case PHASE_DATAOUT: 429 /* write data */ 430 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 431 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 432 (xfer->c_flags & C_DMA) != 0) { 433 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 434 if (xfer->c_flags & C_DMA) { 435 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 436 chp->channel, xfer->drive, dma_flags); 437 drvp->n_dmaerrs++; 438 } 439 sc_xfer->error = XS_TIMEOUT; 440 wdc_atapi_reset(chp, xfer); 441 return 1; 442 } 443 if (xfer->c_bcount < len) { 444 printf("wdc_atapi_intr: warning: write only " 445 "%d of %d requested bytes\n", xfer->c_bcount, len); 446 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 447 bus_space_write_multi_2(chp->cmd_iot, 448 chp->cmd_ioh, wd_data, 449 (u_int16_t *)((char *)xfer->databuf + 450 xfer->c_skip), 451 xfer->c_bcount >> 1); 452 } else { 453 bus_space_write_multi_stream_2(chp->cmd_iot, 454 chp->cmd_ioh, wd_data, 455 (u_int16_t *)((char *)xfer->databuf + 456 xfer->c_skip), 457 xfer->c_bcount >> 1); 458 } 459 for (i = xfer->c_bcount; i < len; i += 2) 460 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 461 wd_data, 0); 462 xfer->c_skip += xfer->c_bcount; 463 xfer->c_bcount = 0; 464 } else { 465 if (drvp->drive_flags & DRIVE_CAP32) { 466 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 467 bus_space_write_multi_4(chp->data32iot, 468 chp->data32ioh, 0, 469 (u_int32_t *)((char *)xfer->databuf + 470 xfer->c_skip), 471 len >> 2); 472 else 473 bus_space_write_multi_stream_4(chp->data32iot, 474 chp->data32ioh, wd_data, 475 (u_int32_t *)((char *)xfer->databuf + 476 xfer->c_skip), 477 len >> 2); 478 479 xfer->c_skip += len & 0xfffffffc; 480 xfer->c_bcount -= len & 0xfffffffc; 481 len = len & 0x03; 482 } 483 if (len > 0) { 484 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 485 bus_space_write_multi_2(chp->cmd_iot, 486 chp->cmd_ioh, wd_data, 487 (u_int16_t *)((char *)xfer->databuf + 488 xfer->c_skip), 489 len >> 1); 490 else 491 bus_space_write_multi_stream_2(chp->cmd_iot, 492 chp->cmd_ioh, wd_data, 493 (u_int16_t *)((char *)xfer->databuf + 494 xfer->c_skip), 495 len >> 1); 496 xfer->c_skip += len; 497 xfer->c_bcount -= len; 498 } 499 } 500 if ((sc_xfer->flags & SCSI_POLL) == 0) { 501 chp->ch_flags |= WDCF_IRQ_WAIT; 502 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 503 } 504 return 1; 505 506 case PHASE_DATAIN: 507 /* Read data */ 508 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 509 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 510 (xfer->c_flags & C_SENSE) == 0) || 511 (xfer->c_flags & C_DMA) != 0) { 512 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 513 if (xfer->c_flags & C_DMA) { 514 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 515 chp->channel, xfer->drive, dma_flags); 516 drvp->n_dmaerrs++; 517 } 518 sc_xfer->error = XS_TIMEOUT; 519 wdc_atapi_reset(chp, xfer); 520 return 1; 521 } 522 if (xfer->c_bcount < len) { 523 printf("wdc_atapi_intr: warning: reading only " 524 "%d of %d bytes\n", xfer->c_bcount, len); 525 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 526 bus_space_read_multi_2(chp->cmd_iot, 527 chp->cmd_ioh, wd_data, 528 (u_int16_t *)((char *)xfer->databuf + 529 xfer->c_skip), 530 xfer->c_bcount >> 1); 531 } else { 532 bus_space_read_multi_stream_2(chp->cmd_iot, 533 chp->cmd_ioh, wd_data, 534 (u_int16_t *)((char *)xfer->databuf + 535 xfer->c_skip), 536 xfer->c_bcount >> 1); 537 } 538 wdcbit_bucket(chp, len - xfer->c_bcount); 539 xfer->c_skip += xfer->c_bcount; 540 xfer->c_bcount = 0; 541 } else { 542 if (drvp->drive_flags & DRIVE_CAP32) { 543 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 544 bus_space_read_multi_4(chp->data32iot, 545 chp->data32ioh, 0, 546 (u_int32_t *)((char *)xfer->databuf + 547 xfer->c_skip), 548 len >> 2); 549 else 550 bus_space_read_multi_stream_4(chp->data32iot, 551 chp->data32ioh, wd_data, 552 (u_int32_t *)((char *)xfer->databuf + 553 xfer->c_skip), 554 len >> 2); 555 556 xfer->c_skip += len & 0xfffffffc; 557 xfer->c_bcount -= len & 0xfffffffc; 558 len = len & 0x03; 559 } 560 if (len > 0) { 561 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 562 bus_space_read_multi_2(chp->cmd_iot, 563 chp->cmd_ioh, wd_data, 564 (u_int16_t *)((char *)xfer->databuf + 565 xfer->c_skip), 566 len >> 1); 567 else 568 bus_space_read_multi_stream_2(chp->cmd_iot, 569 chp->cmd_ioh, wd_data, 570 (u_int16_t *)((char *)xfer->databuf + 571 xfer->c_skip), 572 len >> 1); 573 xfer->c_skip += len; 574 xfer->c_bcount -=len; 575 } 576 } 577 if ((sc_xfer->flags & SCSI_POLL) == 0) { 578 chp->ch_flags |= WDCF_IRQ_WAIT; 579 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 580 } 581 return 1; 582 583 case PHASE_ABORTED: 584 case PHASE_COMPLETED: 585 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 586 /* turn off DMA channel */ 587 if (xfer->c_flags & C_DMA) { 588 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 589 chp->channel, xfer->drive, dma_flags); 590 xfer->c_bcount -= sc_xfer->datalen; 591 } 592 if (xfer->c_flags & C_SENSE) { 593 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 594 /* 595 * request sense failed ! it's not suppossed 596 * to be possible 597 */ 598 sc_xfer->error = XS_DRIVER_STUFFUP; 599 } else { 600 /* use the sense we just read */ 601 sc_xfer->error = XS_SENSE; 602 } 603 } else { 604 if (chp->ch_status & WDCS_ERR) { 605 /* save the short sense */ 606 sc_xfer->error = XS_SHORTSENSE; 607 sc_xfer->sense.atapi_sense = chp->ch_error; 608 if ((sc_xfer->sc_link->quirks & 609 ADEV_NOSENSE) == 0) { 610 /* 611 * let the driver issue a 612 * 'request sense' 613 */ 614 xfer->databuf = &sc_xfer->sense; 615 xfer->c_bcount = 616 sizeof(sc_xfer->sense.scsi_sense); 617 xfer->c_flags |= C_SENSE; 618 wdc_atapi_start(chp, xfer); 619 return 1; 620 } 621 } else if (dma_err < 0) { 622 drvp->n_dmaerrs++; 623 sc_xfer->error = XS_RESET; 624 wdc_atapi_reset(chp, xfer); 625 return (1); 626 } 627 } 628 if (xfer->c_bcount != 0) { 629 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 630 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 631 } 632 #ifdef DIAGNOSTIC 633 if (xfer->c_bcount < 0) { 634 printf("wdc_atapi_intr warning: bcount value " 635 "is %d after io\n", xfer->c_bcount); 636 } 637 #endif 638 break; 639 640 default: 641 if (++retries<500) { 642 DELAY(100); 643 chp->ch_status = bus_space_read_1(chp->cmd_iot, 644 chp->cmd_ioh, wd_status); 645 chp->ch_error = bus_space_read_1(chp->cmd_iot, 646 chp->cmd_ioh, wd_error); 647 goto again; 648 } 649 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 650 if (chp->ch_status & WDCS_ERR) { 651 sc_xfer->error = XS_SHORTSENSE; 652 sc_xfer->sense.atapi_sense = chp->ch_error; 653 } else { 654 sc_xfer->error = XS_RESET; 655 wdc_atapi_reset(chp, xfer); 656 return (1); 657 } 658 } 659 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 660 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 661 DEBUG_INTR); 662 wdc_atapi_done(chp, xfer); 663 return (1); 664 } 665 666 int 667 wdc_atapi_ctrl(chp, xfer) 668 struct channel_softc *chp; 669 struct wdc_xfer *xfer; 670 { 671 struct scsipi_xfer *sc_xfer = xfer->cmd; 672 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 673 char *errstring = NULL; 674 675 /* Ack interrupt done in wait_for_unbusy */ 676 again: 677 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 678 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 679 DEBUG_INTR | DEBUG_FUNCS); 680 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 681 WDSD_IBM | (xfer->drive << 4)); 682 switch (drvp->state) { 683 case PIOMODE: 684 /* Don't try to set mode if controller can't be adjusted */ 685 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 686 goto ready; 687 /* Also don't try if the drive didn't report its mode */ 688 if ((drvp->drive_flags & DRIVE_MODE) == 0) 689 goto ready;; 690 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 691 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 692 drvp->state = PIOMODE_WAIT; 693 break; 694 case PIOMODE_WAIT: 695 errstring = "piomode"; 696 if (wait_for_unbusy(chp, ATAPI_DELAY)) 697 goto timeout; 698 if (chp->ch_status & WDCS_ERR) 699 goto error; 700 /* fall through */ 701 702 case DMAMODE: 703 if (drvp->drive_flags & DRIVE_UDMA) { 704 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 705 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 706 } else if (drvp->drive_flags & DRIVE_DMA) { 707 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 708 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 709 } else { 710 goto ready; 711 } 712 drvp->state = DMAMODE_WAIT; 713 break; 714 case DMAMODE_WAIT: 715 errstring = "dmamode"; 716 if (wait_for_unbusy(chp, ATAPI_DELAY)) 717 goto timeout; 718 if (chp->ch_status & WDCS_ERR) 719 goto error; 720 /* fall through */ 721 722 case READY: 723 ready: 724 drvp->state = READY; 725 xfer->c_intr = wdc_atapi_intr; 726 wdc_atapi_start(chp, xfer); 727 return 1; 728 } 729 if ((sc_xfer->flags & SCSI_POLL) == 0) { 730 chp->ch_flags |= WDCF_IRQ_WAIT; 731 xfer->c_intr = wdc_atapi_ctrl; 732 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 733 } else { 734 goto again; 735 } 736 return 1; 737 738 timeout: 739 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 740 return 0; /* IRQ was not for us */ 741 } 742 printf("%s:%d:%d: %s timed out\n", 743 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 744 sc_xfer->error = XS_TIMEOUT; 745 wdc_atapi_reset(chp, xfer); 746 return 1; 747 error: 748 printf("%s:%d:%d: %s ", 749 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 750 errstring); 751 printf("error (0x%x)\n", chp->ch_error); 752 sc_xfer->error = XS_SHORTSENSE; 753 sc_xfer->sense.atapi_sense = chp->ch_error; 754 wdc_atapi_reset(chp, xfer); 755 return 1; 756 } 757 758 void 759 wdc_atapi_done(chp, xfer) 760 struct channel_softc *chp; 761 struct wdc_xfer *xfer; 762 { 763 struct scsipi_xfer *sc_xfer = xfer->cmd; 764 int need_done = xfer->c_flags & C_NEEDDONE; 765 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 766 767 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 768 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 769 (u_int)xfer->c_flags), DEBUG_XFERS); 770 sc_xfer->resid = xfer->c_bcount; 771 /* remove this command from xfer queue */ 772 xfer->c_skip = 0; 773 wdc_free_xfer(chp, xfer); 774 sc_xfer->flags |= ITSDONE; 775 if (sc_xfer->error == XS_NOERROR || 776 sc_xfer->error == XS_SENSE || 777 sc_xfer->error == XS_SHORTSENSE) { 778 drvp->n_dmaerrs = 0; 779 } else { 780 wdc_downgrade_mode(drvp); 781 } 782 783 if (need_done) { 784 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 785 scsipi_done(sc_xfer); 786 } 787 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 788 chp->ch_flags), DEBUG_XFERS); 789 wdcstart(chp); 790 } 791 792 void 793 wdc_atapi_reset(chp, xfer) 794 struct channel_softc *chp; 795 struct wdc_xfer *xfer; 796 { 797 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 798 struct scsipi_xfer *sc_xfer = xfer->cmd; 799 800 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 801 drvp->state = 0; 802 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 803 printf("%s:%d:%d: reset failed\n", 804 chp->wdc->sc_dev.dv_xname, chp->channel, 805 xfer->drive); 806 sc_xfer->error = XS_SELTIMEOUT; 807 } 808 wdc_atapi_done(chp, xfer); 809 return; 810 } 811
Indexes created Mon Sep 22 13:09:51 GMT 2025