atapi_wdc.c revision 1.11
1 /* $NetBSD: atapi_wdc.c,v 1.11 1998/12/16 13:02:04 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 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 if (xfer->c_flags & C_DMA) 336 drvp->n_dmaerrs++; 337 sc_xfer->error = XS_TIMEOUT; 338 wdc_atapi_reset(chp, xfer); 339 return 1; 340 } 341 /* 342 * if the request sense command was aborted, report the short sense 343 * previously recorded, else continue normal processing 344 */ 345 346 if ((xfer->c_flags & C_SENSE) != 0 && 347 (chp->ch_status & WDCS_ERR) != 0 && 348 (chp->ch_error & WDCE_ABRT) != 0) { 349 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 350 "calling wdc_atapi_done(), sense 0x%x\n", 351 sc_xfer->sense.atapi_sense), DEBUG_INTR); 352 wdc_atapi_done(chp, xfer); 353 return 1; 354 } 355 356 if (xfer->c_flags & C_DMA) { 357 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 358 WDC_DMA_READ : 0; 359 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 360 } 361 again: 362 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 363 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 364 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 365 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 366 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 367 "ire 0x%x :", xfer->c_bcount, 368 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 369 370 switch (phase) { 371 case PHASE_CMDOUT: 372 if (xfer->c_flags & C_SENSE) { 373 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 374 cmd_reqsense->opcode = REQUEST_SENSE; 375 cmd_reqsense->length = xfer->c_bcount; 376 cmd = cmd_reqsense; 377 } else { 378 cmd = sc_xfer->cmd; 379 } 380 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 381 /* Init the DMA channel if necessary */ 382 if (xfer->c_flags & C_DMA) { 383 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 384 chp->channel, xfer->drive, 385 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 386 sc_xfer->error = XS_DRIVER_STUFFUP; 387 break; 388 } 389 } 390 /* send packet command */ 391 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 392 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 393 if (drvp->drive_flags & DRIVE_CAP32) { 394 bus_space_write_multi_4(chp->data32iot, 395 chp->data32ioh, 0, 396 (u_int32_t *)cmd, 397 sc_xfer->cmdlen >> 2); 398 } else { 399 bus_space_write_multi_2(chp->cmd_iot, 400 chp->cmd_ioh, wd_data, 401 (u_int16_t *)cmd, 402 sc_xfer->cmdlen >> 1); 403 } 404 } else { 405 if (drvp->drive_flags & DRIVE_CAP32) { 406 bus_space_write_multi_stream_4(chp->data32iot, 407 chp->data32ioh, 0, 408 (u_int32_t *)cmd, 409 sc_xfer->cmdlen >> 2); 410 } else { 411 bus_space_write_multi_stream_2(chp->cmd_iot, 412 chp->cmd_ioh, wd_data, 413 (u_int16_t *)cmd, 414 sc_xfer->cmdlen >> 1); 415 } 416 } 417 /* Start the DMA channel if necessary */ 418 if (xfer->c_flags & C_DMA) { 419 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 420 chp->channel, xfer->drive, dma_flags); 421 } 422 423 if ((sc_xfer->flags & SCSI_POLL) == 0) { 424 chp->ch_flags |= WDCF_IRQ_WAIT; 425 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 426 } 427 return 1; 428 429 case PHASE_DATAOUT: 430 /* write data */ 431 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 432 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 433 (xfer->c_flags & C_DMA) != 0) { 434 printf("wdc_atapi_intr: bad data phase DATAOUT"); 435 if (xfer->c_flags & C_DMA) { 436 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 437 chp->channel, xfer->drive, dma_flags); 438 drvp->n_dmaerrs++; 439 } 440 sc_xfer->error = XS_TIMEOUT; 441 wdc_atapi_reset(chp, xfer); 442 return 1; 443 } 444 if (xfer->c_bcount < len) { 445 printf("wdc_atapi_intr: warning: write only " 446 "%d of %d requested bytes\n", xfer->c_bcount, len); 447 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 448 bus_space_write_multi_2(chp->cmd_iot, 449 chp->cmd_ioh, wd_data, 450 xfer->databuf + 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 xfer->databuf + xfer->c_skip, 456 xfer->c_bcount >> 1); 457 } 458 for (i = xfer->c_bcount; i < len; i += 2) 459 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 460 wd_data, 0); 461 xfer->c_skip += xfer->c_bcount; 462 xfer->c_bcount = 0; 463 } else { 464 if (drvp->drive_flags & DRIVE_CAP32) { 465 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 466 bus_space_write_multi_4(chp->data32iot, 467 chp->data32ioh, 0, 468 xfer->databuf + xfer->c_skip, len >> 2); 469 else 470 bus_space_write_multi_stream_4(chp->cmd_iot, 471 chp->cmd_ioh, wd_data, 472 xfer->databuf + xfer->c_skip, len >> 2); 473 474 xfer->c_skip += len & 0xfffffffc; 475 xfer->c_bcount -= len & 0xfffffffc; 476 len = len & 0x03; 477 } 478 if (len > 0) { 479 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 480 bus_space_write_multi_2(chp->cmd_iot, 481 chp->cmd_ioh, wd_data, 482 xfer->databuf + xfer->c_skip, len >> 1); 483 else 484 bus_space_write_multi_stream_2(chp->cmd_iot, 485 chp->cmd_ioh, wd_data, 486 xfer->databuf + xfer->c_skip, len >> 1); 487 xfer->c_skip += len; 488 xfer->c_bcount -= len; 489 } 490 } 491 if ((sc_xfer->flags & SCSI_POLL) == 0) { 492 chp->ch_flags |= WDCF_IRQ_WAIT; 493 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 494 } 495 return 1; 496 497 case PHASE_DATAIN: 498 /* Read data */ 499 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 500 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 501 (xfer->c_flags & C_SENSE) == 0) || 502 (xfer->c_flags & C_DMA) != 0) { 503 printf("wdc_atapi_intr: bad data phase DATAIN"); 504 if (xfer->c_flags & C_DMA) { 505 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 506 chp->channel, xfer->drive, dma_flags); 507 drvp->n_dmaerrs++; 508 } 509 sc_xfer->error = XS_TIMEOUT; 510 wdc_atapi_reset(chp, xfer); 511 return 1; 512 } 513 if (xfer->c_bcount < len) { 514 printf("wdc_atapi_intr: warning: reading only " 515 "%d of %d bytes\n", xfer->c_bcount, len); 516 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 517 bus_space_read_multi_2(chp->cmd_iot, 518 chp->cmd_ioh, wd_data, 519 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 520 } else { 521 bus_space_read_multi_stream_2(chp->cmd_iot, 522 chp->cmd_ioh, wd_data, 523 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 524 } 525 wdcbit_bucket(chp, len - xfer->c_bcount); 526 xfer->c_skip += xfer->c_bcount; 527 xfer->c_bcount = 0; 528 } else { 529 if (drvp->drive_flags & DRIVE_CAP32) { 530 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 531 bus_space_read_multi_4(chp->data32iot, 532 chp->data32ioh, 0, 533 xfer->databuf + xfer->c_skip, len >> 2); 534 else 535 bus_space_read_multi_stream_4(chp->cmd_iot, 536 chp->cmd_ioh, wd_data, 537 xfer->databuf + xfer->c_skip, len >> 2); 538 539 xfer->c_skip += len & 0xfffffffc; 540 xfer->c_bcount -= len & 0xfffffffc; 541 len = len & 0x03; 542 } 543 if (len > 0) { 544 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 545 bus_space_read_multi_2(chp->cmd_iot, 546 chp->cmd_ioh, wd_data, 547 xfer->databuf + xfer->c_skip, len >> 1); 548 else 549 bus_space_read_multi_stream_2(chp->cmd_iot, 550 chp->cmd_ioh, wd_data, 551 xfer->databuf + xfer->c_skip, len >> 1); 552 xfer->c_skip += len; 553 xfer->c_bcount -=len; 554 } 555 } 556 if ((sc_xfer->flags & SCSI_POLL) == 0) { 557 chp->ch_flags |= WDCF_IRQ_WAIT; 558 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 559 } 560 return 1; 561 562 case PHASE_ABORTED: 563 case PHASE_COMPLETED: 564 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 565 /* turn off DMA channel */ 566 if (xfer->c_flags & C_DMA) { 567 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 568 chp->channel, xfer->drive, dma_flags); 569 xfer->c_bcount -= sc_xfer->datalen; 570 } 571 if (xfer->c_flags & C_SENSE) { 572 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 573 /* 574 * request sense failed ! it's not suppossed 575 * to be possible 576 */ 577 sc_xfer->error = XS_DRIVER_STUFFUP; 578 } else { 579 /* use the sense we just read */ 580 sc_xfer->error = XS_SENSE; 581 } 582 } else { 583 if (chp->ch_status & WDCS_ERR) { 584 /* save the short sense */ 585 sc_xfer->error = XS_SHORTSENSE; 586 sc_xfer->sense.atapi_sense = chp->ch_error; 587 /* let the driver issue a 'request sense' */ 588 xfer->databuf = &sc_xfer->sense; 589 xfer->c_bcount = 590 sizeof(sc_xfer->sense.scsi_sense); 591 xfer->c_flags |= C_SENSE; 592 wdc_atapi_start(chp, xfer); 593 return 1; 594 } else if (dma_err < 0) { 595 drvp->n_dmaerrs++; 596 sc_xfer->error = XS_DRIVER_STUFFUP; 597 } 598 } 599 if (xfer->c_bcount != 0) { 600 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 601 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 602 } 603 #ifdef DIAGNOSTIC 604 if (xfer->c_bcount < 0) { 605 printf("wdc_atapi_intr warning: bcount value " 606 "is %d after io\n", xfer->c_bcount); 607 } 608 #endif 609 break; 610 611 default: 612 if (++retries<500) { 613 DELAY(100); 614 chp->ch_status = bus_space_read_1(chp->cmd_iot, 615 chp->cmd_ioh, wd_status); 616 chp->ch_error = bus_space_read_1(chp->cmd_iot, 617 chp->cmd_ioh, wd_error); 618 goto again; 619 } 620 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 621 if (chp->ch_status & WDCS_ERR) { 622 sc_xfer->error = XS_SHORTSENSE; 623 sc_xfer->sense.atapi_sense = chp->ch_error; 624 } else { 625 sc_xfer->error = XS_DRIVER_STUFFUP; 626 } 627 } 628 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 629 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 630 DEBUG_INTR); 631 wdc_atapi_done(chp, xfer); 632 return (1); 633 } 634 635 int 636 wdc_atapi_ctrl(chp, xfer) 637 struct channel_softc *chp; 638 struct wdc_xfer *xfer; 639 { 640 struct scsipi_xfer *sc_xfer = xfer->cmd; 641 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 642 char *errstring = NULL; 643 644 /* Ack interrupt done in wait_for_unbusy */ 645 again: 646 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 647 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 648 DEBUG_INTR | DEBUG_FUNCS); 649 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 650 WDSD_IBM | (xfer->drive << 4)); 651 switch (drvp->state) { 652 case PIOMODE: 653 /* Don't try to set mode if controller can't be adjusted */ 654 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 655 goto ready; 656 /* Also don't try if the drive didn't report its mode */ 657 if ((drvp->drive_flags & DRIVE_MODE) == 0) 658 goto ready;; 659 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 660 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 661 drvp->state = PIOMODE_WAIT; 662 break; 663 case PIOMODE_WAIT: 664 errstring = "piomode"; 665 if (wait_for_unbusy(chp, ATAPI_DELAY)) 666 goto timeout; 667 if (chp->ch_status & WDCS_ERR) 668 goto error; 669 /* fall through */ 670 671 case DMAMODE: 672 if (drvp->drive_flags & DRIVE_UDMA) { 673 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 674 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 675 } else if (drvp->drive_flags & DRIVE_DMA) { 676 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 677 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 678 } else { 679 goto ready; 680 } 681 drvp->state = DMAMODE_WAIT; 682 break; 683 case DMAMODE_WAIT: 684 errstring = "dmamode"; 685 if (wait_for_unbusy(chp, ATAPI_DELAY)) 686 goto timeout; 687 if (chp->ch_status & WDCS_ERR) 688 goto error; 689 /* fall through */ 690 691 case READY: 692 ready: 693 drvp->state = READY; 694 xfer->c_intr = wdc_atapi_intr; 695 wdc_atapi_start(chp, xfer); 696 return 1; 697 } 698 if ((sc_xfer->flags & SCSI_POLL) == 0) { 699 chp->ch_flags |= WDCF_IRQ_WAIT; 700 xfer->c_intr = wdc_atapi_ctrl; 701 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 702 } else { 703 goto again; 704 } 705 return 1; 706 707 timeout: 708 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 709 return 0; /* IRQ was not for us */ 710 } 711 printf("%s:%d:%d: %s timed out\n", 712 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 713 sc_xfer->error = XS_TIMEOUT; 714 wdc_atapi_reset(chp, xfer); 715 return 1; 716 error: 717 printf("%s:%d:%d: %s ", 718 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 719 errstring); 720 printf("error (0x%x)\n", chp->ch_error); 721 sc_xfer->error = XS_SHORTSENSE; 722 sc_xfer->sense.atapi_sense = chp->ch_error; 723 wdc_atapi_reset(chp, xfer); 724 return 1; 725 } 726 727 void 728 wdc_atapi_done(chp, xfer) 729 struct channel_softc *chp; 730 struct wdc_xfer *xfer; 731 { 732 struct scsipi_xfer *sc_xfer = xfer->cmd; 733 int need_done = xfer->c_flags & C_NEEDDONE; 734 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 735 736 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 737 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 738 (u_int)xfer->c_flags), DEBUG_XFERS); 739 sc_xfer->resid = xfer->c_bcount; 740 /* remove this command from xfer queue */ 741 xfer->c_skip = 0; 742 wdc_free_xfer(chp, xfer); 743 sc_xfer->flags |= ITSDONE; 744 if (sc_xfer->error == XS_NOERROR || 745 sc_xfer->error == XS_SENSE || 746 sc_xfer->error == XS_SHORTSENSE) { 747 drvp->n_dmaerrs = 0; 748 } else { 749 wdc_downgrade_mode(drvp); 750 } 751 752 if (need_done) { 753 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 754 scsipi_done(sc_xfer); 755 } 756 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 757 chp->ch_flags), DEBUG_XFERS); 758 wdcstart(chp); 759 } 760 761 void 762 wdc_atapi_reset(chp, xfer) 763 struct channel_softc *chp; 764 struct wdc_xfer *xfer; 765 { 766 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 767 struct scsipi_xfer *sc_xfer = xfer->cmd; 768 769 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 770 drvp->state = 0; 771 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 772 printf("%s:%d:%d: reset failed\n", 773 chp->wdc->sc_dev.dv_xname, chp->channel, 774 xfer->drive); 775 sc_xfer->error = XS_SELTIMEOUT; 776 wdc_atapi_done(chp, xfer); 777 return; 778 } 779 wdc_atapi_done(chp, xfer); 780 return; 781 } 782
Indexes created Tue Sep 23 22:09:46 GMT 2025