atapi_wdc.c revision 1.19
1 /* $NetBSD: atapi_wdc.c,v 1.19 1999/03/25 16:17:37 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 #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 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 xfer->drive = drive; 206 xfer->c_flags |= C_ATAPI; 207 xfer->cmd = sc_xfer; 208 xfer->databuf = sc_xfer->data; 209 xfer->c_bcount = sc_xfer->datalen; 210 xfer->c_start = wdc_atapi_start; 211 xfer->c_intr = wdc_atapi_intr; 212 s = splbio(); 213 wdc_exec_xfer(wdc->channels[channel], xfer); 214 #ifdef DIAGNOSTIC 215 if ((sc_xfer->flags & SCSI_POLL) != 0 && 216 (sc_xfer->flags & ITSDONE) == 0) 217 panic("wdc_atapi_send_cmd: polled command not done"); 218 #endif 219 ret = (sc_xfer->flags & ITSDONE) ? COMPLETE : SUCCESSFULLY_QUEUED; 220 splx(s); 221 return ret; 222 } 223 224 void 225 wdc_atapi_start(chp, xfer) 226 struct channel_softc *chp; 227 struct wdc_xfer *xfer; 228 { 229 struct scsipi_xfer *sc_xfer = xfer->cmd; 230 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 231 232 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 233 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 234 sc_xfer->flags), DEBUG_XFERS); 235 /* Adjust C_DMA, it may have changed if we are requesting sense */ 236 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 237 (sc_xfer->datalen > 0 || (xfer->c_flags & C_SENSE))) 238 xfer->c_flags |= C_DMA; 239 else 240 xfer->c_flags &= ~C_DMA; 241 /* Do control operations specially. */ 242 if (drvp->state < READY) { 243 if (drvp->state != PIOMODE) { 244 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 245 chp->wdc->sc_dev.dv_xname, chp->channel, 246 xfer->drive, drvp->state); 247 panic("wdc_atapi_start: bad state"); 248 } 249 wdc_atapi_ctrl(chp, xfer); 250 return; 251 } 252 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 253 WDSD_IBM | (xfer->drive << 4)); 254 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 255 printf("wdc_atapi_start: not ready, st = %02x\n", 256 chp->ch_status); 257 sc_xfer->error = XS_TIMEOUT; 258 wdc_atapi_reset(chp, xfer); 259 return; 260 } 261 262 /* 263 * Even with WDCS_ERR, the device should accept a command packet 264 * Limit length to what can be stuffed into the cylinder register 265 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 266 * but not all devices do that and it's not obvious from the 267 * ATAPI spec that that behaviour should be expected. If more 268 * data is necessary, multiple data transfer phases will be done. 269 */ 270 271 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 272 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 273 0, 0, 0, 274 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 275 276 /* 277 * If there is no interrupt for CMD input, busy-wait for it (done in 278 * the interrupt routine. If it is a polled command, call the interrupt 279 * routine until command is done. 280 */ 281 if ((sc_xfer->sc_link->scsipi_atapi.cap & 0x0300) != ACAP_DRQ_INTR || 282 sc_xfer->flags & SCSI_POLL) { 283 /* Wait for at last 400ns for status bit to be valid */ 284 delay(1); 285 if (wdc_atapi_intr(chp, xfer) == 0) { 286 sc_xfer->error = XS_TIMEOUT; 287 wdc_atapi_reset(chp, xfer); 288 return; 289 } 290 } 291 if (sc_xfer->flags & SCSI_POLL) { 292 while ((sc_xfer->flags & ITSDONE) == 0) { 293 /* Wait for at last 400ns for status bit to be valid */ 294 delay(1); 295 wdc_atapi_intr(chp, xfer); 296 } 297 } 298 } 299 300 int 301 wdc_atapi_intr(chp, xfer) 302 struct channel_softc *chp; 303 struct wdc_xfer *xfer; 304 { 305 struct scsipi_xfer *sc_xfer = xfer->cmd; 306 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 307 int len, phase, i, retries=0; 308 int ire, dma_err = 0; 309 int dma_flags = 0; 310 struct scsipi_generic _cmd_reqsense; 311 struct scsipi_sense *cmd_reqsense = 312 (struct scsipi_sense *)&_cmd_reqsense; 313 void *cmd; 314 315 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 316 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 317 318 /* Is it not a transfer, but a control operation? */ 319 if (drvp->state < READY) { 320 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 321 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 322 drvp->state); 323 panic("wdc_atapi_intr: bad state\n"); 324 } 325 /* Ack interrupt done in wait_for_unbusy */ 326 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 327 WDSD_IBM | (xfer->drive << 4)); 328 if (wait_for_unbusy(chp, 329 (sc_xfer->flags & SCSI_POLL) ? sc_xfer->timeout : 0) != 0) { 330 if ((sc_xfer->flags & SCSI_POLL) == 0 && 331 (xfer->c_flags & C_TIMEOU) == 0) 332 return 0; /* IRQ was not for us */ 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 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 343 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 344 drvp->n_dmaerrs++; 345 /* 346 * if the request sense command was aborted, report the short sense 347 * previously recorded, else continue normal processing 348 */ 349 350 if ((xfer->c_flags & C_SENSE) != 0 && 351 (chp->ch_status & WDCS_ERR) != 0 && 352 (chp->ch_error & WDCE_ABRT) != 0) { 353 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 354 "calling wdc_atapi_done(), sense 0x%x\n", 355 sc_xfer->sense.atapi_sense), DEBUG_INTR); 356 wdc_atapi_done(chp, xfer); 357 return 1; 358 } 359 360 if (xfer->c_flags & C_DMA) { 361 dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || 362 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 363 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 364 } 365 again: 366 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 367 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 368 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 369 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 370 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 371 "ire 0x%x :", xfer->c_bcount, 372 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 373 374 switch (phase) { 375 case PHASE_CMDOUT: 376 if (xfer->c_flags & C_SENSE) { 377 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 378 cmd_reqsense->opcode = REQUEST_SENSE; 379 cmd_reqsense->length = xfer->c_bcount; 380 cmd = cmd_reqsense; 381 } else { 382 cmd = sc_xfer->cmd; 383 } 384 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 385 /* Init the DMA channel if necessary */ 386 if (xfer->c_flags & C_DMA) { 387 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 388 chp->channel, xfer->drive, 389 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 390 sc_xfer->error = XS_DRIVER_STUFFUP; 391 break; 392 } 393 } 394 /* send packet command */ 395 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 396 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 397 if (drvp->drive_flags & DRIVE_CAP32) { 398 bus_space_write_multi_4(chp->data32iot, 399 chp->data32ioh, 0, 400 (u_int32_t *)cmd, 401 sc_xfer->cmdlen >> 2); 402 } else { 403 bus_space_write_multi_2(chp->cmd_iot, 404 chp->cmd_ioh, wd_data, 405 (u_int16_t *)cmd, 406 sc_xfer->cmdlen >> 1); 407 } 408 } else { 409 if (drvp->drive_flags & DRIVE_CAP32) { 410 bus_space_write_multi_stream_4(chp->data32iot, 411 chp->data32ioh, 0, 412 (u_int32_t *)cmd, 413 sc_xfer->cmdlen >> 2); 414 } else { 415 bus_space_write_multi_stream_2(chp->cmd_iot, 416 chp->cmd_ioh, wd_data, 417 (u_int16_t *)cmd, 418 sc_xfer->cmdlen >> 1); 419 } 420 } 421 /* Start the DMA channel if necessary */ 422 if (xfer->c_flags & C_DMA) { 423 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 424 chp->channel, xfer->drive, dma_flags); 425 } 426 427 if ((sc_xfer->flags & SCSI_POLL) == 0) { 428 chp->ch_flags |= WDCF_IRQ_WAIT; 429 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 430 } 431 return 1; 432 433 case PHASE_DATAOUT: 434 /* write data */ 435 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 436 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 437 (xfer->c_flags & C_DMA) != 0) { 438 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 439 if (xfer->c_flags & C_DMA) { 440 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 441 chp->channel, xfer->drive, dma_flags); 442 drvp->n_dmaerrs++; 443 } 444 sc_xfer->error = XS_TIMEOUT; 445 wdc_atapi_reset(chp, xfer); 446 return 1; 447 } 448 if (xfer->c_bcount < len) { 449 printf("wdc_atapi_intr: warning: write only " 450 "%d of %d requested bytes\n", xfer->c_bcount, len); 451 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 452 bus_space_write_multi_2(chp->cmd_iot, 453 chp->cmd_ioh, wd_data, 454 (u_int16_t *)((char *)xfer->databuf + 455 xfer->c_skip), 456 xfer->c_bcount >> 1); 457 } else { 458 bus_space_write_multi_stream_2(chp->cmd_iot, 459 chp->cmd_ioh, wd_data, 460 (u_int16_t *)((char *)xfer->databuf + 461 xfer->c_skip), 462 xfer->c_bcount >> 1); 463 } 464 for (i = xfer->c_bcount; i < len; i += 2) 465 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 466 wd_data, 0); 467 xfer->c_skip += xfer->c_bcount; 468 xfer->c_bcount = 0; 469 } else { 470 if (drvp->drive_flags & DRIVE_CAP32) { 471 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 472 bus_space_write_multi_4(chp->data32iot, 473 chp->data32ioh, 0, 474 (u_int32_t *)((char *)xfer->databuf + 475 xfer->c_skip), 476 len >> 2); 477 else 478 bus_space_write_multi_stream_4(chp->data32iot, 479 chp->data32ioh, wd_data, 480 (u_int32_t *)((char *)xfer->databuf + 481 xfer->c_skip), 482 len >> 2); 483 484 xfer->c_skip += len & 0xfffffffc; 485 xfer->c_bcount -= len & 0xfffffffc; 486 len = len & 0x03; 487 } 488 if (len > 0) { 489 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 490 bus_space_write_multi_2(chp->cmd_iot, 491 chp->cmd_ioh, wd_data, 492 (u_int16_t *)((char *)xfer->databuf + 493 xfer->c_skip), 494 len >> 1); 495 else 496 bus_space_write_multi_stream_2(chp->cmd_iot, 497 chp->cmd_ioh, wd_data, 498 (u_int16_t *)((char *)xfer->databuf + 499 xfer->c_skip), 500 len >> 1); 501 xfer->c_skip += len; 502 xfer->c_bcount -= len; 503 } 504 } 505 if ((sc_xfer->flags & SCSI_POLL) == 0) { 506 chp->ch_flags |= WDCF_IRQ_WAIT; 507 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 508 } 509 return 1; 510 511 case PHASE_DATAIN: 512 /* Read data */ 513 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 514 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 515 (xfer->c_flags & C_SENSE) == 0) || 516 (xfer->c_flags & C_DMA) != 0) { 517 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 518 if (xfer->c_flags & C_DMA) { 519 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 520 chp->channel, xfer->drive, dma_flags); 521 drvp->n_dmaerrs++; 522 } 523 sc_xfer->error = XS_TIMEOUT; 524 wdc_atapi_reset(chp, xfer); 525 return 1; 526 } 527 if (xfer->c_bcount < len) { 528 printf("wdc_atapi_intr: warning: reading only " 529 "%d of %d bytes\n", xfer->c_bcount, len); 530 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 531 bus_space_read_multi_2(chp->cmd_iot, 532 chp->cmd_ioh, wd_data, 533 (u_int16_t *)((char *)xfer->databuf + 534 xfer->c_skip), 535 xfer->c_bcount >> 1); 536 } else { 537 bus_space_read_multi_stream_2(chp->cmd_iot, 538 chp->cmd_ioh, wd_data, 539 (u_int16_t *)((char *)xfer->databuf + 540 xfer->c_skip), 541 xfer->c_bcount >> 1); 542 } 543 wdcbit_bucket(chp, len - xfer->c_bcount); 544 xfer->c_skip += xfer->c_bcount; 545 xfer->c_bcount = 0; 546 } else { 547 if (drvp->drive_flags & DRIVE_CAP32) { 548 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 549 bus_space_read_multi_4(chp->data32iot, 550 chp->data32ioh, 0, 551 (u_int32_t *)((char *)xfer->databuf + 552 xfer->c_skip), 553 len >> 2); 554 else 555 bus_space_read_multi_stream_4(chp->data32iot, 556 chp->data32ioh, wd_data, 557 (u_int32_t *)((char *)xfer->databuf + 558 xfer->c_skip), 559 len >> 2); 560 561 xfer->c_skip += len & 0xfffffffc; 562 xfer->c_bcount -= len & 0xfffffffc; 563 len = len & 0x03; 564 } 565 if (len > 0) { 566 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 567 bus_space_read_multi_2(chp->cmd_iot, 568 chp->cmd_ioh, wd_data, 569 (u_int16_t *)((char *)xfer->databuf + 570 xfer->c_skip), 571 len >> 1); 572 else 573 bus_space_read_multi_stream_2(chp->cmd_iot, 574 chp->cmd_ioh, wd_data, 575 (u_int16_t *)((char *)xfer->databuf + 576 xfer->c_skip), 577 len >> 1); 578 xfer->c_skip += len; 579 xfer->c_bcount -=len; 580 } 581 } 582 if ((sc_xfer->flags & SCSI_POLL) == 0) { 583 chp->ch_flags |= WDCF_IRQ_WAIT; 584 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 585 } 586 return 1; 587 588 case PHASE_ABORTED: 589 case PHASE_COMPLETED: 590 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 591 /* turn off DMA channel */ 592 if (xfer->c_flags & C_DMA) { 593 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 594 chp->channel, xfer->drive, dma_flags); 595 xfer->c_bcount -= sc_xfer->datalen; 596 } 597 if (xfer->c_flags & C_SENSE) { 598 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 599 /* 600 * request sense failed ! it's not suppossed 601 * to be possible 602 */ 603 if (dma_err < 0) 604 drvp->n_dmaerrs++; 605 sc_xfer->error = XS_RESET; 606 wdc_atapi_reset(chp, xfer); 607 return (1); 608 } else if (xfer->c_bcount < 609 sizeof(sc_xfer->sense.scsi_sense)) { 610 /* use the sense we just read */ 611 sc_xfer->error = XS_SENSE; 612 } else { 613 /* 614 * command completed, but no data was read. 615 * use the short sense we saved previsouly. 616 */ 617 sc_xfer->error = XS_SHORTSENSE; 618 } 619 } else { 620 if (chp->ch_status & WDCS_ERR) { 621 /* save the short sense */ 622 sc_xfer->error = XS_SHORTSENSE; 623 sc_xfer->sense.atapi_sense = chp->ch_error; 624 if ((sc_xfer->sc_link->quirks & 625 ADEV_NOSENSE) == 0) { 626 /* 627 * let the driver issue a 628 * 'request sense' 629 */ 630 xfer->databuf = &sc_xfer->sense; 631 xfer->c_bcount = 632 sizeof(sc_xfer->sense.scsi_sense); 633 xfer->c_flags |= C_SENSE; 634 wdc_atapi_start(chp, xfer); 635 return 1; 636 } 637 } else if (dma_err < 0) { 638 drvp->n_dmaerrs++; 639 sc_xfer->error = XS_RESET; 640 wdc_atapi_reset(chp, xfer); 641 return (1); 642 } 643 } 644 if (xfer->c_bcount != 0) { 645 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 646 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 647 } 648 #ifdef DIAGNOSTIC 649 if (xfer->c_bcount < 0) { 650 printf("wdc_atapi_intr warning: bcount value " 651 "is %d after io\n", xfer->c_bcount); 652 } 653 #endif 654 break; 655 656 default: 657 if (++retries<500) { 658 DELAY(100); 659 chp->ch_status = bus_space_read_1(chp->cmd_iot, 660 chp->cmd_ioh, wd_status); 661 chp->ch_error = bus_space_read_1(chp->cmd_iot, 662 chp->cmd_ioh, wd_error); 663 goto again; 664 } 665 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 666 if (chp->ch_status & WDCS_ERR) { 667 sc_xfer->error = XS_SHORTSENSE; 668 sc_xfer->sense.atapi_sense = chp->ch_error; 669 } else { 670 sc_xfer->error = XS_RESET; 671 wdc_atapi_reset(chp, xfer); 672 return (1); 673 } 674 } 675 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 676 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 677 DEBUG_INTR); 678 wdc_atapi_done(chp, xfer); 679 return (1); 680 } 681 682 int 683 wdc_atapi_ctrl(chp, xfer) 684 struct channel_softc *chp; 685 struct wdc_xfer *xfer; 686 { 687 struct scsipi_xfer *sc_xfer = xfer->cmd; 688 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 689 char *errstring = NULL; 690 int delay = (sc_xfer->flags & SCSI_POLL) ? ATAPI_DELAY : 0; 691 692 /* Ack interrupt done in wait_for_unbusy */ 693 again: 694 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 695 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 696 DEBUG_INTR | DEBUG_FUNCS); 697 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 698 WDSD_IBM | (xfer->drive << 4)); 699 switch (drvp->state) { 700 case PIOMODE: 701 /* Don't try to set mode if controller can't be adjusted */ 702 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 703 goto ready; 704 /* Also don't try if the drive didn't report its mode */ 705 if ((drvp->drive_flags & DRIVE_MODE) == 0) 706 goto ready;; 707 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 708 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 709 drvp->state = PIOMODE_WAIT; 710 break; 711 case PIOMODE_WAIT: 712 errstring = "piomode"; 713 if (wait_for_unbusy(chp, delay)) 714 goto timeout; 715 if (chp->ch_status & WDCS_ERR) 716 goto error; 717 /* fall through */ 718 719 case DMAMODE: 720 if (drvp->drive_flags & DRIVE_UDMA) { 721 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 722 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 723 } else if (drvp->drive_flags & DRIVE_DMA) { 724 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 725 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 726 } else { 727 goto ready; 728 } 729 drvp->state = DMAMODE_WAIT; 730 break; 731 case DMAMODE_WAIT: 732 errstring = "dmamode"; 733 if (wait_for_unbusy(chp, delay)) 734 goto timeout; 735 if (chp->ch_status & WDCS_ERR) 736 goto error; 737 /* fall through */ 738 739 case READY: 740 ready: 741 drvp->state = READY; 742 xfer->c_intr = wdc_atapi_intr; 743 wdc_atapi_start(chp, xfer); 744 return 1; 745 } 746 if ((sc_xfer->flags & SCSI_POLL) == 0) { 747 chp->ch_flags |= WDCF_IRQ_WAIT; 748 xfer->c_intr = wdc_atapi_ctrl; 749 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 750 } else { 751 goto again; 752 } 753 return 1; 754 755 timeout: 756 if ((xfer->c_flags & C_TIMEOU) == 0 && delay == 0) { 757 return 0; /* IRQ was not for us */ 758 } 759 printf("%s:%d:%d: %s timed out\n", 760 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 761 sc_xfer->error = XS_TIMEOUT; 762 wdc_atapi_reset(chp, xfer); 763 return 1; 764 error: 765 printf("%s:%d:%d: %s ", 766 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 767 errstring); 768 printf("error (0x%x)\n", chp->ch_error); 769 sc_xfer->error = XS_SHORTSENSE; 770 sc_xfer->sense.atapi_sense = chp->ch_error; 771 wdc_atapi_reset(chp, xfer); 772 return 1; 773 } 774 775 void 776 wdc_atapi_done(chp, xfer) 777 struct channel_softc *chp; 778 struct wdc_xfer *xfer; 779 { 780 struct scsipi_xfer *sc_xfer = xfer->cmd; 781 int need_done = xfer->c_flags & C_NEEDDONE; 782 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 783 784 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 785 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 786 (u_int)xfer->c_flags), DEBUG_XFERS); 787 sc_xfer->resid = xfer->c_bcount; 788 /* remove this command from xfer queue */ 789 xfer->c_skip = 0; 790 wdc_free_xfer(chp, xfer); 791 sc_xfer->flags |= ITSDONE; 792 if (drvp->n_dmaerrs || 793 (sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE && 794 sc_xfer->error != XS_SHORTSENSE)) { 795 drvp->n_dmaerrs = 0; 796 wdc_downgrade_mode(drvp); 797 } 798 799 if (need_done) { 800 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 801 scsipi_done(sc_xfer); 802 } 803 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 804 chp->ch_flags), DEBUG_XFERS); 805 wdcstart(chp); 806 } 807 808 void 809 wdc_atapi_reset(chp, xfer) 810 struct channel_softc *chp; 811 struct wdc_xfer *xfer; 812 { 813 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 814 struct scsipi_xfer *sc_xfer = xfer->cmd; 815 816 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 817 drvp->state = 0; 818 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 819 printf("%s:%d:%d: reset failed\n", 820 chp->wdc->sc_dev.dv_xname, chp->channel, 821 xfer->drive); 822 sc_xfer->error = XS_SELTIMEOUT; 823 } 824 wdc_atapi_done(chp, xfer); 825 return; 826 } 827
Indexes created Tue Sep 23 22:09:46 GMT 2025