atapi_wdc.c revision 1.24
1 /* $NetBSD: atapi_wdc.c,v 1.24 1999/08/06 12:00:26 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 *, int)); 90 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 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 /* start timeout machinery */ 242 if ((sc_xfer->flags & SCSI_POLL) == 0) 243 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 244 /* Do control operations specially. */ 245 if (drvp->state < READY) { 246 if (drvp->state != PIOMODE) { 247 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 248 chp->wdc->sc_dev.dv_xname, chp->channel, 249 xfer->drive, drvp->state); 250 panic("wdc_atapi_start: bad state"); 251 } 252 wdc_atapi_ctrl(chp, xfer, 0); 253 return; 254 } 255 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 256 WDSD_IBM | (xfer->drive << 4)); 257 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 258 printf("wdc_atapi_start: not ready, st = %02x\n", 259 chp->ch_status); 260 sc_xfer->error = XS_TIMEOUT; 261 wdc_atapi_reset(chp, xfer); 262 return; 263 } 264 265 /* 266 * Even with WDCS_ERR, the device should accept a command packet 267 * Limit length to what can be stuffed into the cylinder register 268 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 269 * but not all devices do that and it's not obvious from the 270 * ATAPI spec that that behaviour should be expected. If more 271 * data is necessary, multiple data transfer phases will be done. 272 */ 273 274 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 275 sc_xfer->datalen <= 0xffff ? sc_xfer->datalen : 0xffff, 276 0, 0, 0, 277 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 278 279 /* 280 * If there is no interrupt for CMD input, busy-wait for it (done in 281 * the interrupt routine. If it is a polled command, call the interrupt 282 * routine until command is done. 283 */ 284 if ((sc_xfer->sc_link->scsipi_atapi.cap & ATAPI_CFG_DRQ_MASK) != 285 ATAPI_CFG_IRQ_DRQ || (sc_xfer->flags & SCSI_POLL)) { 286 /* Wait for at last 400ns for status bit to be valid */ 287 DELAY(1); 288 wdc_atapi_intr(chp, xfer, 0); 289 } else { 290 chp->ch_flags |= WDCF_IRQ_WAIT; 291 } 292 if (sc_xfer->flags & SCSI_POLL) { 293 while ((sc_xfer->flags & ITSDONE) == 0) { 294 /* Wait for at last 400ns for status bit to be valid */ 295 DELAY(1); 296 wdc_atapi_intr(chp, xfer, 0); 297 } 298 } 299 } 300 301 int 302 wdc_atapi_intr(chp, xfer, irq) 303 struct channel_softc *chp; 304 struct wdc_xfer *xfer; 305 int irq; 306 { 307 struct scsipi_xfer *sc_xfer = xfer->cmd; 308 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 309 int len, phase, i, retries=0; 310 int ire, dma_err = 0; 311 int dma_flags = 0; 312 struct scsipi_generic _cmd_reqsense; 313 struct scsipi_sense *cmd_reqsense = 314 (struct scsipi_sense *)&_cmd_reqsense; 315 void *cmd; 316 317 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 318 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 319 320 /* Is it not a transfer, but a control operation? */ 321 if (drvp->state < READY) { 322 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 323 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 324 drvp->state); 325 panic("wdc_atapi_intr: bad state\n"); 326 } 327 /* 328 * If we missed an interrupt in a PIO transfer, reset and restart. 329 * Don't try to continue transfer, we may have missed cycles. 330 */ 331 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 332 sc_xfer->error = XS_TIMEOUT; 333 wdc_atapi_reset(chp, xfer); 334 } 335 336 /* Ack interrupt done in wait_for_unbusy */ 337 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 338 WDSD_IBM | (xfer->drive << 4)); 339 if (wait_for_unbusy(chp, 340 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 341 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 342 return 0; /* IRQ was not for us */ 343 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 344 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 345 xfer->c_bcount, xfer->c_skip); 346 if (xfer->c_flags & C_DMA) 347 drvp->n_dmaerrs++; 348 sc_xfer->error = XS_TIMEOUT; 349 wdc_atapi_reset(chp, xfer); 350 return 1; 351 } 352 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 353 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 354 drvp->n_dmaerrs++; 355 /* 356 * if the request sense command was aborted, report the short sense 357 * previously recorded, else continue normal processing 358 */ 359 360 if ((xfer->c_flags & C_SENSE) != 0 && 361 (chp->ch_status & WDCS_ERR) != 0 && 362 (chp->ch_error & WDCE_ABRT) != 0) { 363 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 364 "calling wdc_atapi_done(), sense 0x%x\n", 365 sc_xfer->sense.atapi_sense), DEBUG_INTR); 366 wdc_atapi_done(chp, xfer); 367 return 1; 368 } 369 370 if (xfer->c_flags & C_DMA) { 371 dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || 372 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 373 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 374 } 375 again: 376 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 377 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 378 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 379 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 380 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 381 "ire 0x%x :", xfer->c_bcount, 382 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 383 384 switch (phase) { 385 case PHASE_CMDOUT: 386 if (xfer->c_flags & C_SENSE) { 387 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 388 cmd_reqsense->opcode = REQUEST_SENSE; 389 cmd_reqsense->length = xfer->c_bcount; 390 cmd = cmd_reqsense; 391 } else { 392 cmd = sc_xfer->cmd; 393 } 394 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 395 /* Init the DMA channel if necessary */ 396 if (xfer->c_flags & C_DMA) { 397 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 398 chp->channel, xfer->drive, 399 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 400 sc_xfer->error = XS_DRIVER_STUFFUP; 401 break; 402 } 403 } 404 /* send packet command */ 405 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 406 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 407 if (drvp->drive_flags & DRIVE_CAP32) { 408 bus_space_write_multi_4(chp->data32iot, 409 chp->data32ioh, 0, 410 (u_int32_t *)cmd, 411 sc_xfer->cmdlen >> 2); 412 } else { 413 bus_space_write_multi_2(chp->cmd_iot, 414 chp->cmd_ioh, wd_data, 415 (u_int16_t *)cmd, 416 sc_xfer->cmdlen >> 1); 417 } 418 } else { 419 if (drvp->drive_flags & DRIVE_CAP32) { 420 bus_space_write_multi_stream_4(chp->data32iot, 421 chp->data32ioh, 0, 422 (u_int32_t *)cmd, 423 sc_xfer->cmdlen >> 2); 424 } else { 425 bus_space_write_multi_stream_2(chp->cmd_iot, 426 chp->cmd_ioh, wd_data, 427 (u_int16_t *)cmd, 428 sc_xfer->cmdlen >> 1); 429 } 430 } 431 /* Start the DMA channel if necessary */ 432 if (xfer->c_flags & C_DMA) { 433 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 434 chp->channel, xfer->drive, dma_flags); 435 } 436 437 if ((sc_xfer->flags & SCSI_POLL) == 0) { 438 chp->ch_flags |= WDCF_IRQ_WAIT; 439 } 440 return 1; 441 442 case PHASE_DATAOUT: 443 /* write data */ 444 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 445 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 446 (xfer->c_flags & C_DMA) != 0) { 447 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 448 if (xfer->c_flags & C_DMA) { 449 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 450 chp->channel, xfer->drive, dma_flags); 451 drvp->n_dmaerrs++; 452 } 453 sc_xfer->error = XS_TIMEOUT; 454 wdc_atapi_reset(chp, xfer); 455 return 1; 456 } 457 if (xfer->c_bcount < len) { 458 printf("wdc_atapi_intr: warning: write only " 459 "%d of %d requested bytes\n", xfer->c_bcount, len); 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 (u_int16_t *)((char *)xfer->databuf + 464 xfer->c_skip), 465 xfer->c_bcount >> 1); 466 } else { 467 bus_space_write_multi_stream_2(chp->cmd_iot, 468 chp->cmd_ioh, wd_data, 469 (u_int16_t *)((char *)xfer->databuf + 470 xfer->c_skip), 471 xfer->c_bcount >> 1); 472 } 473 for (i = xfer->c_bcount; i < len; i += 2) 474 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 475 wd_data, 0); 476 xfer->c_skip += xfer->c_bcount; 477 xfer->c_bcount = 0; 478 } else { 479 if (drvp->drive_flags & DRIVE_CAP32) { 480 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 481 bus_space_write_multi_4(chp->data32iot, 482 chp->data32ioh, 0, 483 (u_int32_t *)((char *)xfer->databuf + 484 xfer->c_skip), 485 len >> 2); 486 else 487 bus_space_write_multi_stream_4(chp->data32iot, 488 chp->data32ioh, wd_data, 489 (u_int32_t *)((char *)xfer->databuf + 490 xfer->c_skip), 491 len >> 2); 492 493 xfer->c_skip += len & 0xfffffffc; 494 xfer->c_bcount -= len & 0xfffffffc; 495 len = len & 0x03; 496 } 497 if (len > 0) { 498 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 499 bus_space_write_multi_2(chp->cmd_iot, 500 chp->cmd_ioh, wd_data, 501 (u_int16_t *)((char *)xfer->databuf + 502 xfer->c_skip), 503 len >> 1); 504 else 505 bus_space_write_multi_stream_2(chp->cmd_iot, 506 chp->cmd_ioh, wd_data, 507 (u_int16_t *)((char *)xfer->databuf + 508 xfer->c_skip), 509 len >> 1); 510 xfer->c_skip += len; 511 xfer->c_bcount -= len; 512 } 513 } 514 if ((sc_xfer->flags & SCSI_POLL) == 0) { 515 chp->ch_flags |= WDCF_IRQ_WAIT; 516 } 517 return 1; 518 519 case PHASE_DATAIN: 520 /* Read data */ 521 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 522 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 523 (xfer->c_flags & C_SENSE) == 0) || 524 (xfer->c_flags & C_DMA) != 0) { 525 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 526 if (xfer->c_flags & C_DMA) { 527 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 528 chp->channel, xfer->drive, dma_flags); 529 drvp->n_dmaerrs++; 530 } 531 sc_xfer->error = XS_TIMEOUT; 532 wdc_atapi_reset(chp, xfer); 533 return 1; 534 } 535 if (xfer->c_bcount < len) { 536 printf("wdc_atapi_intr: warning: reading only " 537 "%d of %d bytes\n", xfer->c_bcount, len); 538 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 539 bus_space_read_multi_2(chp->cmd_iot, 540 chp->cmd_ioh, wd_data, 541 (u_int16_t *)((char *)xfer->databuf + 542 xfer->c_skip), 543 xfer->c_bcount >> 1); 544 } else { 545 bus_space_read_multi_stream_2(chp->cmd_iot, 546 chp->cmd_ioh, wd_data, 547 (u_int16_t *)((char *)xfer->databuf + 548 xfer->c_skip), 549 xfer->c_bcount >> 1); 550 } 551 wdcbit_bucket(chp, len - xfer->c_bcount); 552 xfer->c_skip += xfer->c_bcount; 553 xfer->c_bcount = 0; 554 } else { 555 if (drvp->drive_flags & DRIVE_CAP32) { 556 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 557 bus_space_read_multi_4(chp->data32iot, 558 chp->data32ioh, 0, 559 (u_int32_t *)((char *)xfer->databuf + 560 xfer->c_skip), 561 len >> 2); 562 else 563 bus_space_read_multi_stream_4(chp->data32iot, 564 chp->data32ioh, wd_data, 565 (u_int32_t *)((char *)xfer->databuf + 566 xfer->c_skip), 567 len >> 2); 568 569 xfer->c_skip += len & 0xfffffffc; 570 xfer->c_bcount -= len & 0xfffffffc; 571 len = len & 0x03; 572 } 573 if (len > 0) { 574 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 575 bus_space_read_multi_2(chp->cmd_iot, 576 chp->cmd_ioh, wd_data, 577 (u_int16_t *)((char *)xfer->databuf + 578 xfer->c_skip), 579 len >> 1); 580 else 581 bus_space_read_multi_stream_2(chp->cmd_iot, 582 chp->cmd_ioh, wd_data, 583 (u_int16_t *)((char *)xfer->databuf + 584 xfer->c_skip), 585 len >> 1); 586 xfer->c_skip += len; 587 xfer->c_bcount -=len; 588 } 589 } 590 if ((sc_xfer->flags & SCSI_POLL) == 0) { 591 chp->ch_flags |= WDCF_IRQ_WAIT; 592 } 593 return 1; 594 595 case PHASE_ABORTED: 596 case PHASE_COMPLETED: 597 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 598 /* turn off DMA channel */ 599 if (xfer->c_flags & C_DMA) { 600 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 601 chp->channel, xfer->drive, dma_flags); 602 if (xfer->c_flags & C_SENSE) 603 xfer->c_bcount -= 604 sizeof(sc_xfer->sense.scsi_sense); 605 else 606 xfer->c_bcount -= sc_xfer->datalen; 607 } 608 if (xfer->c_flags & C_SENSE) { 609 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 610 /* 611 * request sense failed ! it's not suppossed 612 * to be possible 613 */ 614 if (dma_err < 0) 615 drvp->n_dmaerrs++; 616 sc_xfer->error = XS_RESET; 617 wdc_atapi_reset(chp, xfer); 618 return (1); 619 } else if (xfer->c_bcount < 620 sizeof(sc_xfer->sense.scsi_sense)) { 621 /* use the sense we just read */ 622 sc_xfer->error = XS_SENSE; 623 } else { 624 /* 625 * command completed, but no data was read. 626 * use the short sense we saved previsouly. 627 */ 628 sc_xfer->error = XS_SHORTSENSE; 629 } 630 } else { 631 sc_xfer->resid = xfer->c_bcount; 632 if (chp->ch_status & WDCS_ERR) { 633 /* save the short sense */ 634 sc_xfer->error = XS_SHORTSENSE; 635 sc_xfer->sense.atapi_sense = chp->ch_error; 636 if ((sc_xfer->sc_link->quirks & 637 ADEV_NOSENSE) == 0) { 638 /* 639 * let the driver issue a 640 * 'request sense' 641 */ 642 xfer->databuf = &sc_xfer->sense; 643 xfer->c_bcount = 644 sizeof(sc_xfer->sense.scsi_sense); 645 xfer->c_skip = 0; 646 xfer->c_flags |= C_SENSE; 647 untimeout(wdctimeout, chp); 648 wdc_atapi_start(chp, xfer); 649 return 1; 650 } 651 } else if (dma_err < 0) { 652 drvp->n_dmaerrs++; 653 sc_xfer->error = XS_RESET; 654 wdc_atapi_reset(chp, xfer); 655 return (1); 656 } 657 } 658 if (xfer->c_bcount != 0) { 659 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 660 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 661 } 662 #ifdef DIAGNOSTIC 663 if (xfer->c_bcount < 0) { 664 printf("wdc_atapi_intr warning: bcount value " 665 "is %d after io\n", xfer->c_bcount); 666 } 667 #endif 668 break; 669 670 default: 671 if (++retries<500) { 672 DELAY(100); 673 chp->ch_status = bus_space_read_1(chp->cmd_iot, 674 chp->cmd_ioh, wd_status); 675 chp->ch_error = bus_space_read_1(chp->cmd_iot, 676 chp->cmd_ioh, wd_error); 677 goto again; 678 } 679 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 680 if (chp->ch_status & WDCS_ERR) { 681 sc_xfer->error = XS_SHORTSENSE; 682 sc_xfer->sense.atapi_sense = chp->ch_error; 683 } else { 684 sc_xfer->error = XS_RESET; 685 wdc_atapi_reset(chp, xfer); 686 return (1); 687 } 688 } 689 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 690 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 691 DEBUG_INTR); 692 wdc_atapi_done(chp, xfer); 693 return (1); 694 } 695 696 int 697 wdc_atapi_ctrl(chp, xfer, irq) 698 struct channel_softc *chp; 699 struct wdc_xfer *xfer; 700 int irq; 701 { 702 struct scsipi_xfer *sc_xfer = xfer->cmd; 703 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 704 char *errstring = NULL; 705 int delay = (irq == 0) ? ATAPI_DELAY : 0; 706 707 /* Ack interrupt done in wait_for_unbusy */ 708 again: 709 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 710 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 711 DEBUG_INTR | DEBUG_FUNCS); 712 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 713 WDSD_IBM | (xfer->drive << 4)); 714 switch (drvp->state) { 715 case PIOMODE: 716 piomode: 717 /* Don't try to set mode if controller can't be adjusted */ 718 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 719 goto ready; 720 /* Also don't try if the drive didn't report its mode */ 721 if ((drvp->drive_flags & DRIVE_MODE) == 0) 722 goto ready;; 723 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 724 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 725 drvp->state = PIOMODE_WAIT; 726 break; 727 case PIOMODE_WAIT: 728 errstring = "piomode"; 729 if (wait_for_unbusy(chp, delay)) 730 goto timeout; 731 if (chp->ch_status & WDCS_ERR) { 732 if (drvp->PIO_mode < 3) { 733 drvp->PIO_mode = 3; 734 goto piomode; 735 } else { 736 goto error; 737 } 738 } 739 /* fall through */ 740 741 case DMAMODE: 742 if (drvp->drive_flags & DRIVE_UDMA) { 743 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 744 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 745 } else if (drvp->drive_flags & DRIVE_DMA) { 746 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 747 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 748 } else { 749 goto ready; 750 } 751 drvp->state = DMAMODE_WAIT; 752 break; 753 case DMAMODE_WAIT: 754 errstring = "dmamode"; 755 if (wait_for_unbusy(chp, delay)) 756 goto timeout; 757 if (chp->ch_status & WDCS_ERR) 758 goto error; 759 /* fall through */ 760 761 case READY: 762 ready: 763 drvp->state = READY; 764 xfer->c_intr = wdc_atapi_intr; 765 untimeout(wdctimeout, chp); 766 wdc_atapi_start(chp, xfer); 767 return 1; 768 } 769 if ((sc_xfer->flags & SCSI_POLL) == 0) { 770 chp->ch_flags |= WDCF_IRQ_WAIT; 771 xfer->c_intr = wdc_atapi_ctrl; 772 } else { 773 goto again; 774 } 775 return 1; 776 777 timeout: 778 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 779 return 0; /* IRQ was not for us */ 780 } 781 printf("%s:%d:%d: %s timed out\n", 782 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 783 sc_xfer->error = XS_TIMEOUT; 784 wdc_atapi_reset(chp, xfer); 785 return 1; 786 error: 787 printf("%s:%d:%d: %s ", 788 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 789 errstring); 790 printf("error (0x%x)\n", chp->ch_error); 791 sc_xfer->error = XS_SHORTSENSE; 792 sc_xfer->sense.atapi_sense = chp->ch_error; 793 wdc_atapi_reset(chp, xfer); 794 return 1; 795 } 796 797 void 798 wdc_atapi_done(chp, xfer) 799 struct channel_softc *chp; 800 struct wdc_xfer *xfer; 801 { 802 struct scsipi_xfer *sc_xfer = xfer->cmd; 803 int need_done = xfer->c_flags & C_NEEDDONE; 804 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 805 806 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 807 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 808 (u_int)xfer->c_flags), DEBUG_XFERS); 809 untimeout(wdctimeout, chp); 810 /* remove this command from xfer queue */ 811 wdc_free_xfer(chp, xfer); 812 sc_xfer->flags |= ITSDONE; 813 if (drvp->n_dmaerrs || 814 (sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE && 815 sc_xfer->error != XS_SHORTSENSE)) { 816 drvp->n_dmaerrs = 0; 817 wdc_downgrade_mode(drvp); 818 } 819 820 if (need_done) { 821 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 822 scsipi_done(sc_xfer); 823 } 824 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 825 chp->ch_flags), DEBUG_XFERS); 826 wdcstart(chp); 827 } 828 829 void 830 wdc_atapi_reset(chp, xfer) 831 struct channel_softc *chp; 832 struct wdc_xfer *xfer; 833 { 834 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 835 struct scsipi_xfer *sc_xfer = xfer->cmd; 836 837 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 838 drvp->state = 0; 839 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 840 printf("%s:%d:%d: reset failed\n", 841 chp->wdc->sc_dev.dv_xname, chp->channel, 842 xfer->drive); 843 sc_xfer->error = XS_SELTIMEOUT; 844 } 845 wdc_atapi_done(chp, xfer); 846 return; 847 } 848
Indexes created Mon Sep 22 21:09:42 GMT 2025