atapi_wdc.c revision 1.6
1 /* $NetBSD: atapi_wdc.c,v 1.6 1998/10/13 15:18:48 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; 313 314 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 315 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 316 317 /* Is it not a transfer, but a control operation? */ 318 if (drvp->state < READY) { 319 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 320 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 321 drvp->state); 322 panic("wdc_atapi_intr: bad state\n"); 323 } 324 /* Ack interrupt done in wait_for_unbusy */ 325 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 326 WDSD_IBM | (xfer->drive << 4)); 327 if (wait_for_unbusy(chp, sc_xfer->timeout) != 0) { 328 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip%d\n", 329 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 330 xfer->c_bcount, xfer->c_skip); 331 sc_xfer->error = XS_TIMEOUT; 332 wdc_atapi_reset(chp, xfer); 333 return 1; 334 } 335 /* Error here only if the command is aborted */ 336 if ((chp->ch_status & WDCS_ERR) != 0 && 337 (chp->ch_error & WDCE_ABRT) != 0) { 338 sc_xfer->error = XS_SENSE; 339 sc_xfer->sense.atapi_sense = chp->ch_error; 340 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done(), " 341 "sense 0x%x\n", sc_xfer->sense.atapi_sense), DEBUG_INTR); 342 wdc_atapi_done(chp, xfer); 343 return 1; 344 } 345 346 if (xfer->c_flags & C_DMA) { 347 dma_flags = (sc_xfer->flags & SCSI_DATA_IN) ? 348 WDC_DMA_READ : 0; 349 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 350 } 351 again: 352 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 353 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 354 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 355 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 356 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 357 "ire 0x%x :", xfer->c_bcount, 358 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 359 360 switch (phase) { 361 case PHASE_CMDOUT: 362 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 363 /* Init the DMA channel if necessary */ 364 if (xfer->c_flags & C_DMA) { 365 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 366 chp->channel, xfer->drive, 367 xfer->databuf, sc_xfer->datalen, dma_flags) != 0) { 368 sc_xfer->error = XS_DRIVER_STUFFUP; 369 break; 370 } 371 } 372 /* send packet command */ 373 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 374 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 375 if (drvp->drive_flags & DRIVE_CAP32) { 376 bus_space_write_multi_4(chp->data32iot, 377 chp->data32ioh, 0, 378 (u_int32_t *)sc_xfer->cmd, 379 sc_xfer->cmdlen >> 2); 380 } else { 381 bus_space_write_multi_2(chp->cmd_iot, 382 chp->cmd_ioh, wd_data, 383 (u_int16_t *)sc_xfer->cmd, 384 sc_xfer->cmdlen >> 1); 385 } 386 } else { 387 if (drvp->drive_flags & DRIVE_CAP32) { 388 bus_space_write_multi_stream_4(chp->data32iot, 389 chp->data32ioh, 0, 390 (u_int32_t *)sc_xfer->cmd, 391 sc_xfer->cmdlen >> 2); 392 } else { 393 bus_space_write_multi_stream_2(chp->cmd_iot, 394 chp->cmd_ioh, wd_data, 395 (u_int16_t *)sc_xfer->cmd, 396 sc_xfer->cmdlen >> 1); 397 } 398 } 399 /* Start the DMA channel if necessary */ 400 if (xfer->c_flags & C_DMA) { 401 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 402 chp->channel, xfer->drive, dma_flags); 403 } 404 405 if ((sc_xfer->flags & SCSI_POLL) == 0) { 406 chp->ch_flags |= WDCF_IRQ_WAIT; 407 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 408 } 409 return 1; 410 411 case PHASE_DATAOUT: 412 /* write data */ 413 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 414 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 415 (xfer->c_flags & C_DMA) != 0) { 416 printf("wdc_atapi_intr: bad data phase DATAOUT"); 417 if (xfer->c_flags & C_DMA) { 418 printf(", falling back to PIO\n"); 419 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 420 } 421 sc_xfer->error = XS_TIMEOUT; 422 wdc_atapi_reset(chp, xfer); 423 return 1; 424 } 425 if (xfer->c_bcount < len) { 426 printf("wdc_atapi_intr: warning: write only " 427 "%d of %d requested bytes\n", xfer->c_bcount, len); 428 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 429 bus_space_write_multi_2(chp->cmd_iot, 430 chp->cmd_ioh, wd_data, 431 xfer->databuf + xfer->c_skip, 432 xfer->c_bcount >> 1); 433 } else { 434 bus_space_write_multi_stream_2(chp->cmd_iot, 435 chp->cmd_ioh, wd_data, 436 xfer->databuf + xfer->c_skip, 437 xfer->c_bcount >> 1); 438 } 439 for (i = xfer->c_bcount; i < len; i += 2) 440 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 441 wd_data, 0); 442 xfer->c_skip += xfer->c_bcount; 443 xfer->c_bcount = 0; 444 } else { 445 if (drvp->drive_flags & DRIVE_CAP32) { 446 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 447 bus_space_write_multi_4(chp->data32iot, 448 chp->data32ioh, 0, 449 xfer->databuf + xfer->c_skip, len >> 2); 450 else 451 bus_space_write_multi_stream_4(chp->cmd_iot, 452 chp->cmd_ioh, wd_data, 453 xfer->databuf + xfer->c_skip, len >> 2); 454 455 xfer->c_skip += len & 0xfffffffc; 456 xfer->c_bcount -= len & 0xfffffffc; 457 len = len & 0x03; 458 } 459 if (len > 0) { 460 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 461 bus_space_write_multi_2(chp->cmd_iot, 462 chp->cmd_ioh, wd_data, 463 xfer->databuf + xfer->c_skip, len >> 1); 464 else 465 bus_space_write_multi_stream_2(chp->cmd_iot, 466 chp->cmd_ioh, wd_data, 467 xfer->databuf + xfer->c_skip, len >> 1); 468 xfer->c_skip += len; 469 xfer->c_bcount -= len; 470 } 471 } 472 if ((sc_xfer->flags & SCSI_POLL) == 0) { 473 chp->ch_flags |= WDCF_IRQ_WAIT; 474 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 475 } 476 return 1; 477 478 case PHASE_DATAIN: 479 /* Read data */ 480 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 481 if ((sc_xfer->flags & SCSI_DATA_IN) == 0 || 482 (xfer->c_flags & C_DMA) != 0) { 483 printf("wdc_atapi_intr: bad data phase DATAIN"); 484 if (xfer->c_flags & C_DMA) { 485 printf(", falling back to PIO\n"); 486 drvp->drive_flags &= ~(DRIVE_DMA | DRIVE_UDMA); 487 } 488 sc_xfer->error = XS_TIMEOUT; 489 wdc_atapi_reset(chp, xfer); 490 return 1; 491 } 492 if (xfer->c_bcount < len) { 493 printf("wdc_atapi_intr: warning: reading only " 494 "%d of %d bytes\n", xfer->c_bcount, len); 495 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 496 bus_space_read_multi_2(chp->cmd_iot, 497 chp->cmd_ioh, wd_data, 498 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 499 } else { 500 bus_space_read_multi_stream_2(chp->cmd_iot, 501 chp->cmd_ioh, wd_data, 502 xfer->databuf + xfer->c_skip, xfer->c_bcount >> 1); 503 } 504 wdcbit_bucket(chp, len - xfer->c_bcount); 505 xfer->c_skip += xfer->c_bcount; 506 xfer->c_bcount = 0; 507 } else { 508 if (drvp->drive_flags & DRIVE_CAP32) { 509 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 510 bus_space_read_multi_4(chp->data32iot, 511 chp->data32ioh, 0, 512 xfer->databuf + xfer->c_skip, len >> 2); 513 else 514 bus_space_read_multi_stream_4(chp->cmd_iot, 515 chp->cmd_ioh, wd_data, 516 xfer->databuf + xfer->c_skip, len >> 2); 517 518 xfer->c_skip += len & 0xfffffffc; 519 xfer->c_bcount -= len & 0xfffffffc; 520 len = len & 0x03; 521 } 522 if (len > 0) { 523 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 524 bus_space_read_multi_2(chp->cmd_iot, 525 chp->cmd_ioh, wd_data, 526 xfer->databuf + xfer->c_skip, len >> 1); 527 else 528 bus_space_read_multi_stream_2(chp->cmd_iot, 529 chp->cmd_ioh, wd_data, 530 xfer->databuf + xfer->c_skip, len >> 1); 531 xfer->c_skip += len; 532 xfer->c_bcount -=len; 533 } 534 } 535 if ((sc_xfer->flags & SCSI_POLL) == 0) { 536 chp->ch_flags |= WDCF_IRQ_WAIT; 537 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 538 } 539 return 1; 540 541 case PHASE_ABORTED: 542 case PHASE_COMPLETED: 543 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 544 /* turn off DMA channel */ 545 if (xfer->c_flags & C_DMA) { 546 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 547 chp->channel, xfer->drive, dma_flags); 548 xfer->c_bcount -= sc_xfer->datalen; 549 } 550 551 if (chp->ch_status & WDCS_ERR) { 552 sc_xfer->error = XS_SENSE; 553 sc_xfer->sense.atapi_sense = chp->ch_error; 554 } else if (dma_err < 0) { 555 sc_xfer->error = XS_DRIVER_STUFFUP; 556 } 557 #ifdef DIAGNOSTIC 558 if (xfer->c_bcount != 0) { 559 printf("wdc_atapi_intr warning: bcount value " 560 "is %d after io\n", xfer->c_bcount); 561 } 562 #endif 563 break; 564 565 default: 566 if (++retries<500) { 567 DELAY(100); 568 chp->ch_status = bus_space_read_1(chp->cmd_iot, 569 chp->cmd_ioh, wd_status); 570 chp->ch_error = bus_space_read_1(chp->cmd_iot, 571 chp->cmd_ioh, wd_error); 572 goto again; 573 } 574 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 575 if (chp->ch_status & WDCS_ERR) { 576 sc_xfer->error = XS_SENSE; 577 sc_xfer->sense.atapi_sense = chp->ch_error; 578 } else { 579 sc_xfer->error = XS_DRIVER_STUFFUP; 580 } 581 } 582 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 583 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 584 DEBUG_INTR); 585 wdc_atapi_done(chp, xfer); 586 return (1); 587 } 588 589 int 590 wdc_atapi_ctrl(chp, xfer) 591 struct channel_softc *chp; 592 struct wdc_xfer *xfer; 593 { 594 struct scsipi_xfer *sc_xfer = xfer->cmd; 595 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 596 char *errstring = NULL; 597 598 /* Ack interrupt done in wait_for_unbusy */ 599 again: 600 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 601 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 602 DEBUG_INTR | DEBUG_FUNCS); 603 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 604 WDSD_IBM | (xfer->drive << 4)); 605 switch (drvp->state) { 606 case PIOMODE: 607 /* Don't try to set mode if controller can't be adjusted */ 608 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 609 goto ready; 610 /* Also don't try if the drive didn't report its mode */ 611 if ((drvp->drive_flags & DRIVE_MODE) == 0) 612 goto ready;; 613 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 614 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 615 drvp->state = PIOMODE_WAIT; 616 break; 617 case PIOMODE_WAIT: 618 errstring = "piomode"; 619 if (wait_for_unbusy(chp, ATAPI_DELAY)) 620 goto timeout; 621 if (chp->ch_status & WDCS_ERR) 622 goto error; 623 /* fall through */ 624 625 case DMAMODE: 626 if (drvp->drive_flags & DRIVE_UDMA) { 627 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 628 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 629 } else if (drvp->drive_flags & DRIVE_DMA) { 630 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 631 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 632 } else { 633 goto ready; 634 } 635 drvp->state = DMAMODE_WAIT; 636 break; 637 case DMAMODE_WAIT: 638 errstring = "dmamode"; 639 if (wait_for_unbusy(chp, ATAPI_DELAY)) 640 goto timeout; 641 if (chp->ch_status & WDCS_ERR) 642 goto error; 643 /* fall through */ 644 645 case READY: 646 ready: 647 drvp->state = READY; 648 xfer->c_intr = wdc_atapi_intr; 649 wdc_atapi_start(chp, xfer); 650 return 1; 651 } 652 if ((sc_xfer->flags & SCSI_POLL) == 0) { 653 chp->ch_flags |= WDCF_IRQ_WAIT; 654 xfer->c_intr = wdc_atapi_ctrl; 655 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 656 } else { 657 goto again; 658 } 659 return 1; 660 661 timeout: 662 if ((xfer->c_flags & C_TIMEOU) == 0 ) { 663 return 0; /* IRQ was not for us */ 664 } 665 printf("%s:%d:%d: %s timed out\n", 666 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 667 sc_xfer->error = XS_TIMEOUT; 668 wdc_atapi_reset(chp, xfer); 669 return 1; 670 error: 671 printf("%s:%d:%d: %s ", 672 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 673 errstring); 674 printf("error (0x%x)\n", chp->ch_error); 675 sc_xfer->error = XS_SENSE; 676 sc_xfer->sense.atapi_sense = chp->ch_error; 677 wdc_atapi_reset(chp, xfer); 678 return 1; 679 } 680 681 void 682 wdc_atapi_done(chp, xfer) 683 struct channel_softc *chp; 684 struct wdc_xfer *xfer; 685 { 686 struct scsipi_xfer *sc_xfer = xfer->cmd; 687 struct wdc_softc *wdc = chp->wdc; 688 int need_done = xfer->c_flags & C_NEEDDONE; 689 690 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 691 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 692 (u_int)xfer->c_flags), DEBUG_XFERS); 693 sc_xfer->resid = xfer->c_bcount; 694 /* remove this command from xfer queue */ 695 xfer->c_skip = 0; 696 wdc_free_xfer(chp, xfer); 697 sc_xfer->flags |= ITSDONE; 698 if (need_done) { 699 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 700 scsipi_done(sc_xfer); 701 } 702 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 703 chp->ch_flags), DEBUG_XFERS); 704 wdcstart(wdc, chp->channel); 705 } 706 707 void 708 wdc_atapi_reset(chp, xfer) 709 struct channel_softc *chp; 710 struct wdc_xfer *xfer; 711 { 712 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 713 struct scsipi_xfer *sc_xfer = xfer->cmd; 714 715 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 716 drvp->state = 0; 717 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 718 printf("%s:%d:%d: reset failed\n", 719 chp->wdc->sc_dev.dv_xname, chp->channel, 720 xfer->drive); 721 sc_xfer->error = XS_SELTIMEOUT; 722 wdc_atapi_done(chp, xfer); 723 return; 724 } 725 wdc_atapi_done(chp, xfer); 726 return; 727 } 728
Indexes created Tue Sep 23 14:10:03 GMT 2025