atapi_wdc.c revision 1.8
1 /* $NetBSD: atapi_wdc.c,v 1.8 1998/11/17 14:45:39 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 %s:%d:%d\n", 197 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 198 199 xfer = wdc_get_xfer(flags & SCSI_NOSLEEP ? WDC_NOSLEEP : WDC_CANSLEEP); 200 if (xfer == NULL) { 201 return TRY_AGAIN_LATER; 202 } 203 if (sc_xfer->flags & SCSI_POLL) 204 xfer->c_flags |= C_POLL; 205 drvp = &wdc->channels[channel].ch_drive[drive]; 206 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 207 sc_xfer->datalen > 0) 208 xfer->c_flags |= C_DMA; 209 xfer->drive = drive; 210 xfer->c_flags |= C_ATAPI; 211 xfer->cmd = sc_xfer; 212 xfer->databuf = sc_xfer->data; 213 xfer->c_bcount = sc_xfer->datalen; 214 xfer->c_start = wdc_atapi_start; 215 xfer->c_intr = wdc_atapi_intr; 216 s = splbio(); 217 wdc_exec_xfer(&wdc->channels[channel], xfer); 218 #ifdef DIAGNOSTIC 219 if ((sc_xfer->flags & SCSI_POLL) != 0 && 220 (sc_xfer->flags & ITSDONE) == 0) 221 panic("wdc_atapi_send_cmd: polled command not done"); 222 #endif 223 ret = (sc_xfer->flags & ITSDONE) ? COMPLETE : SUCCESSFULLY_QUEUED; 224 splx(s); 225 return ret; 226 } 227 228 void 229 wdc_atapi_start(chp, xfer) 230 struct channel_softc *chp; 231 struct wdc_xfer *xfer; 232 { 233 struct scsipi_xfer *sc_xfer = xfer->cmd; 234 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 235 236 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 237 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 238 sc_xfer->flags), DEBUG_XFERS); 239 /* Do control operations specially. */ 240 if (drvp->state < READY) { 241 if (drvp->state != PIOMODE) { 242 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 243 chp->wdc->sc_dev.dv_xname, chp->channel, 244 xfer->drive, drvp->state); 245 panic("wdc_atapi_start: bad state"); 246 } 247 wdc_atapi_ctrl(chp, xfer); 248 return; 249 } 250 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 251 WDSD_IBM | (xfer->drive << 4)); 252 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 253 printf("wdc_atapi_start: not ready, st = %02x\n", 254 chp->ch_status); 255 sc_xfer->error = XS_TIMEOUT; 256 wdc_atapi_reset(chp, xfer); 257 return; 258 } 259 260 /* 261 * Even with WDCS_ERR, the device should accept a command packet 262 * Limit length to what can be stuffed into the cylinder register 263 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 264 * but not all devices do that and it's not obvious from the 265 * ATAPI spec that that behaviour should be expected. If more 266 * data is necessary, multiple data transfer phases will be done. 267 */ 268 269 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 270 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 271 0, 0, 0, 272 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 273 274 /* 275 * If there is no interrupt for CMD input, busy-wait for it (done in 276 * the interrupt routine. If it is a polled command, call the interrupt 277 * routine until command is done. 278 */ 279 if ((sc_xfer->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || 280 sc_xfer->flags & SCSI_POLL) { 281 /* Wait for at last 400ns for status bit to be valid */ 282 delay(1); 283 if (wdc_atapi_intr(chp, xfer) == 0) { 284 sc_xfer->error = XS_TIMEOUT; 285 wdc_atapi_reset(chp, xfer); 286 return; 287 } 288 } 289 if (sc_xfer->flags & SCSI_POLL) { 290 while ((sc_xfer->flags & ITSDONE) == 0) { 291 /* Wait for at last 400ns for status bit to be valid */ 292 delay(1); 293 if (wdc_atapi_intr(chp, xfer) == 0) { 294 sc_xfer->error = XS_SELTIMEOUT; 295 /* do we know more ? */ 296 wdc_atapi_done(chp, xfer); 297 return; 298 } 299 } 300 } 301 } 302 303 int 304 wdc_atapi_intr(chp, xfer) 305 struct channel_softc *chp; 306 struct wdc_xfer *xfer; 307 { 308 struct scsipi_xfer *sc_xfer = xfer->cmd; 309 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 310 int len, phase, i, retries=0; 311 int ire, dma_err = 0; 312 int dma_flags = 0; 313 struct scsipi_generic _cmd_reqsense; 314 struct scsipi_sense *cmd_reqsense = 315 (struct scsipi_sense *)&_cmd_reqsense; 316 void *cmd; 317 318 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 319 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 320 321 /* Is it not a transfer, but a control operation? */ 322 if (drvp->state < READY) { 323 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 324 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 325 drvp->state); 326 panic("wdc_atapi_intr: bad state\n"); 327 } 328 /* Ack interrupt done in wait_for_unbusy */ 329 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 330 WDSD_IBM | (xfer->drive << 4)); 331 if (wait_for_unbusy(chp, sc_xfer->timeout) != 0) { 332 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 333 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 334 xfer->c_bcount, xfer->c_skip); 335 sc_xfer->error = XS_TIMEOUT; 336 wdc_atapi_reset(chp, xfer); 337 return 1; 338 } 339 /* 340 * if the request sense command was aborted, report the short sense 341 * previously recorded, else continue normal processing 342 */ 343 344 if ((xfer->c_flags & C_SENSE) != 0 && 345 (chp->ch_status & WDCS_ERR) != 0 && 346 (chp->ch_error & WDCE_ABRT) != 0) { 347 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 348 "calling wdc_atapi_done(), sense 0x%x\n", 349 sc_xfer->sense.atapi_sense), DEBUG_INTR); 350 wdc_atapi_done(chp, xfer); 351 return 1; 352 } 353 354 if (xfer->c_flags & C_DMA) { 355 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 356 WDC_DMA_READ : 0; 357 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 358 } 359 again: 360 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 361 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 362 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 363 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 364 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 365 "ire 0x%x :", xfer->c_bcount, 366 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 367 368 switch (phase) { 369 case PHASE_CMDOUT: 370 if (xfer->c_flags & C_SENSE) { 371 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 372 cmd_reqsense->opcode = REQUEST_SENSE; 373 cmd_reqsense->length = xfer->c_bcount; 374 cmd = cmd_reqsense; 375 } else { 376 cmd = sc_xfer->cmd; 377 } 378 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 379 /* Init the DMA channel if necessary */ 380 if (xfer->c_flags & C_DMA) { 381 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 382 chp->channel, xfer->drive, 383 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 384 sc_xfer->error = XS_DRIVER_STUFFUP; 385 break; 386 } 387 } 388 /* send packet command */ 389 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 390 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 391 if (drvp->drive_flags & DRIVE_CAP32) { 392 bus_space_write_multi_4(chp->data32iot, 393 chp->data32ioh, 0, 394 (u_int32_t *)cmd, 395 sc_xfer->cmdlen >> 2); 396 } else { 397 bus_space_write_multi_2(chp->cmd_iot, 398 chp->cmd_ioh, wd_data, 399 (u_int16_t *)cmd, 400 sc_xfer->cmdlen >> 1); 401 } 402 } else { 403 if (drvp->drive_flags & DRIVE_CAP32) { 404 bus_space_write_multi_stream_4(chp->data32iot, 405 chp->data32ioh, 0, 406 (u_int32_t *)cmd, 407 sc_xfer->cmdlen >> 2); 408 } else { 409 bus_space_write_multi_stream_2(chp->cmd_iot, 410 chp->cmd_ioh, wd_data, 411 (u_int16_t *)cmd, 412 sc_xfer->cmdlen >> 1); 413 } 414 } 415 /* Start the DMA channel if necessary */ 416 if (xfer->c_flags & C_DMA) { 417 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 418 chp->channel, xfer->drive, dma_flags); 419 } 420 421 if ((sc_xfer->flags & SCSI_POLL) == 0) { 422 chp->ch_flags |= WDCF_IRQ_WAIT; 423 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 424 } 425 return 1; 426 427 case PHASE_DATAOUT: 428 /* write data */ 429 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 430 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 431 (xfer->c_flags & C_DMA) != 0) { 432 printf("wdc_atapi_intr: bad data phase DATAOUT"); 433 if (xfer->c_flags & C_DMA) { 434 printf(", falling back to PIO\n"); 435 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 436 } 437 sc_xfer->error = XS_TIMEOUT; 438 wdc_atapi_reset(chp, xfer); 439 return 1; 440 } 441 if (xfer->c_bcount < len) { 442 printf("wdc_atapi_intr: warning: write only " 443 "%d of %d requested bytes\n", xfer->c_bcount, len); 444 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 445 bus_space_write_multi_2(chp->cmd_iot, 446 chp->cmd_ioh, wd_data, 447 xfer->databuf + xfer->c_skip, 448 xfer->c_bcount >> 1); 449 } else { 450 bus_space_write_multi_stream_2(chp->cmd_iot, 451 chp->cmd_ioh, wd_data, 452 xfer->databuf + xfer->c_skip, 453 xfer->c_bcount >> 1); 454 } 455 for (i = xfer->c_bcount; i < len; i += 2) 456 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 457 wd_data, 0); 458 xfer->c_skip += xfer->c_bcount; 459 xfer->c_bcount = 0; 460 } else { 461 if (drvp->drive_flags & DRIVE_CAP32) { 462 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 463 bus_space_write_multi_4(chp->data32iot, 464 chp->data32ioh, 0, 465 xfer->databuf + xfer->c_skip, len >> 2); 466 else 467 bus_space_write_multi_stream_4(chp->cmd_iot, 468 chp->cmd_ioh, wd_data, 469 xfer->databuf + xfer->c_skip, len >> 2); 470 471 xfer->c_skip += len & 0xfffffffc; 472 xfer->c_bcount -= len & 0xfffffffc; 473 len = len & 0x03; 474 } 475 if (len > 0) { 476 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 477 bus_space_write_multi_2(chp->cmd_iot, 478 chp->cmd_ioh, wd_data, 479 xfer->databuf + xfer->c_skip, len >> 1); 480 else 481 bus_space_write_multi_stream_2(chp->cmd_iot, 482 chp->cmd_ioh, wd_data, 483 xfer->databuf + xfer->c_skip, len >> 1); 484 xfer->c_skip += len; 485 xfer->c_bcount -= len; 486 } 487 } 488 if ((sc_xfer->flags & SCSI_POLL) == 0) { 489 chp->ch_flags |= WDCF_IRQ_WAIT; 490 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 491 } 492 return 1; 493 494 case PHASE_DATAIN: 495 /* Read data */ 496 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 497 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 498 (xfer->c_flags & C_SENSE) == 0) || 499 (xfer->c_flags & C_DMA) != 0) { 500 printf("wdc_atapi_intr: bad data phase DATAIN"); 501 if (xfer->c_flags & C_DMA) { 502 printf(", falling back to PIO\n"); 503 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 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: reading only " 511 "%d of %d bytes\n", xfer->c_bcount, len); 512 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 513 bus_space_read_multi_2(chp->cmd_iot, 514 chp->cmd_ioh, wd_data, 515 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 516 } else { 517 bus_space_read_multi_stream_2(chp->cmd_iot, 518 chp->cmd_ioh, wd_data, 519 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 520 } 521 wdcbit_bucket(chp, len - xfer->c_bcount); 522 xfer->c_skip += xfer->c_bcount; 523 xfer->c_bcount = 0; 524 } else { 525 if (drvp->drive_flags & DRIVE_CAP32) { 526 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 527 bus_space_read_multi_4(chp->data32iot, 528 chp->data32ioh, 0, 529 xfer->databuf + xfer->c_skip, len >> 2); 530 else 531 bus_space_read_multi_stream_4(chp->cmd_iot, 532 chp->cmd_ioh, wd_data, 533 xfer->databuf + xfer->c_skip, len >> 2); 534 535 xfer->c_skip += len & 0xfffffffc; 536 xfer->c_bcount -= len & 0xfffffffc; 537 len = len & 0x03; 538 } 539 if (len > 0) { 540 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 541 bus_space_read_multi_2(chp->cmd_iot, 542 chp->cmd_ioh, wd_data, 543 xfer->databuf + xfer->c_skip, len >> 1); 544 else 545 bus_space_read_multi_stream_2(chp->cmd_iot, 546 chp->cmd_ioh, wd_data, 547 xfer->databuf + xfer->c_skip, len >> 1); 548 xfer->c_skip += len; 549 xfer->c_bcount -=len; 550 } 551 } 552 if ((sc_xfer->flags & SCSI_POLL) == 0) { 553 chp->ch_flags |= WDCF_IRQ_WAIT; 554 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 555 } 556 return 1; 557 558 case PHASE_ABORTED: 559 case PHASE_COMPLETED: 560 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 561 /* turn off DMA channel */ 562 if (xfer->c_flags & C_DMA) { 563 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 564 chp->channel, xfer->drive, dma_flags); 565 xfer->c_bcount -= sc_xfer->datalen; 566 } 567 if (xfer->c_flags & C_SENSE) { 568 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 569 /* 570 * request sense failed ! it's not suppossed 571 * to be possible 572 */ 573 sc_xfer->error = XS_DRIVER_STUFFUP; 574 } else { 575 /* use the sense we just read */ 576 sc_xfer->error = XS_SENSE; 577 } 578 } else { 579 if (chp->ch_status & WDCS_ERR) { 580 /* save the short sense */ 581 sc_xfer->error = XS_SHORTSENSE; 582 sc_xfer->sense.atapi_sense = chp->ch_error; 583 /* let the driver issue a 'request sense' */ 584 xfer->databuf = &sc_xfer->sense; 585 xfer->c_bcount = 586 sizeof(sc_xfer->sense.scsi_sense); 587 xfer->c_flags |= C_SENSE; 588 wdc_atapi_start(chp, xfer); 589 return 1; 590 } else if (dma_err < 0) { 591 sc_xfer->error = XS_DRIVER_STUFFUP; 592 } 593 } 594 if (xfer->c_bcount != 0) { 595 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 596 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 597 } 598 #ifdef DIAGNOSTIC 599 if (xfer->c_bcount < 0) { 600 printf("wdc_atapi_intr warning: bcount value " 601 "is %d after io\n", xfer->c_bcount); 602 } 603 #endif 604 break; 605 606 default: 607 if (++retries<500) { 608 DELAY(100); 609 chp->ch_status = bus_space_read_1(chp->cmd_iot, 610 chp->cmd_ioh, wd_status); 611 chp->ch_error = bus_space_read_1(chp->cmd_iot, 612 chp->cmd_ioh, wd_error); 613 goto again; 614 } 615 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 616 if (chp->ch_status & WDCS_ERR) { 617 sc_xfer->error = XS_SHORTSENSE; 618 sc_xfer->sense.atapi_sense = chp->ch_error; 619 } else { 620 sc_xfer->error = XS_DRIVER_STUFFUP; 621 } 622 } 623 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 624 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 625 DEBUG_INTR); 626 wdc_atapi_done(chp, xfer); 627 return (1); 628 } 629 630 int 631 wdc_atapi_ctrl(chp, xfer) 632 struct channel_softc *chp; 633 struct wdc_xfer *xfer; 634 { 635 struct scsipi_xfer *sc_xfer = xfer->cmd; 636 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 637 char *errstring = NULL; 638 639 /* Ack interrupt done in wait_for_unbusy */ 640 again: 641 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 642 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 643 DEBUG_INTR | DEBUG_FUNCS); 644 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 645 WDSD_IBM | (xfer->drive << 4)); 646 switch (drvp->state) { 647 case PIOMODE: 648 /* Don't try to set mode if controller can't be adjusted */ 649 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 650 goto ready; 651 /* Also don't try if the drive didn't report its mode */ 652 if ((drvp->drive_flags & DRIVE_MODE) == 0) 653 goto ready;; 654 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 655 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 656 drvp->state = PIOMODE_WAIT; 657 break; 658 case PIOMODE_WAIT: 659 errstring = "piomode"; 660 if (wait_for_unbusy(chp, ATAPI_DELAY)) 661 goto timeout; 662 if (chp->ch_status & WDCS_ERR) 663 goto error; 664 /* fall through */ 665 666 case DMAMODE: 667 if (drvp->drive_flags & DRIVE_UDMA) { 668 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 669 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 670 } else if (drvp->drive_flags & DRIVE_DMA) { 671 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 672 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 673 } else { 674 goto ready; 675 } 676 drvp->state = DMAMODE_WAIT; 677 break; 678 case DMAMODE_WAIT: 679 errstring = "dmamode"; 680 if (wait_for_unbusy(chp, ATAPI_DELAY)) 681 goto timeout; 682 if (chp->ch_status & WDCS_ERR) 683 goto error; 684 /* fall through */ 685 686 case READY: 687 ready: 688 drvp->state = READY; 689 xfer->c_intr = wdc_atapi_intr; 690 wdc_atapi_start(chp, xfer); 691 return 1; 692 } 693 if ((sc_xfer->flags & SCSI_POLL) == 0) { 694 chp->ch_flags |= WDCF_IRQ_WAIT; 695 xfer->c_intr = wdc_atapi_ctrl; 696 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 697 } else { 698 goto again; 699 } 700 return 1; 701 702 timeout: 703 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 704 return 0; /* IRQ was not for us */ 705 } 706 printf("%s:%d:%d: %s timed out\n", 707 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 708 sc_xfer->error = XS_TIMEOUT; 709 wdc_atapi_reset(chp, xfer); 710 return 1; 711 error: 712 printf("%s:%d:%d: %s ", 713 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 714 errstring); 715 printf("error (0x%x)\n", chp->ch_error); 716 sc_xfer->error = XS_SHORTSENSE; 717 sc_xfer->sense.atapi_sense = chp->ch_error; 718 wdc_atapi_reset(chp, xfer); 719 return 1; 720 } 721 722 void 723 wdc_atapi_done(chp, xfer) 724 struct channel_softc *chp; 725 struct wdc_xfer *xfer; 726 { 727 struct scsipi_xfer *sc_xfer = xfer->cmd; 728 struct wdc_softc *wdc = chp->wdc; 729 int need_done = xfer->c_flags & C_NEEDDONE; 730 731 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 732 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 733 (u_int)xfer->c_flags), DEBUG_XFERS); 734 sc_xfer->resid = xfer->c_bcount; 735 /* remove this command from xfer queue */ 736 xfer->c_skip = 0; 737 wdc_free_xfer(chp, xfer); 738 sc_xfer->flags |= ITSDONE; 739 if (need_done) { 740 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 741 scsipi_done(sc_xfer); 742 } 743 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 744 chp->ch_flags), DEBUG_XFERS); 745 wdcstart(wdc, chp->channel); 746 } 747 748 void 749 wdc_atapi_reset(chp, xfer) 750 struct channel_softc *chp; 751 struct wdc_xfer *xfer; 752 { 753 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 754 struct scsipi_xfer *sc_xfer = xfer->cmd; 755 756 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 757 drvp->state = 0; 758 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 759 printf("%s:%d:%d: reset failed\n", 760 chp->wdc->sc_dev.dv_xname, chp->channel, 761 xfer->drive); 762 sc_xfer->error = XS_SELTIMEOUT; 763 wdc_atapi_done(chp, xfer); 764 return; 765 } 766 wdc_atapi_done(chp, xfer); 767 return; 768 } 769
Indexes created Mon Sep 22 13:09:51 GMT 2025