atapi_wdc.c revision 1.25
1 /* $NetBSD: atapi_wdc.c,v 1.25 1999/08/09 09:49:48 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 #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 return 1; 335 } 336 337 /* Ack interrupt done in wait_for_unbusy */ 338 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 339 WDSD_IBM | (xfer->drive << 4)); 340 if (wait_for_unbusy(chp, 341 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 342 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 343 return 0; /* IRQ was not for us */ 344 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 345 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 346 xfer->c_bcount, xfer->c_skip); 347 if (xfer->c_flags & C_DMA) 348 drvp->n_dmaerrs++; 349 sc_xfer->error = XS_TIMEOUT; 350 wdc_atapi_reset(chp, xfer); 351 return 1; 352 } 353 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 354 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 355 drvp->n_dmaerrs++; 356 /* 357 * if the request sense command was aborted, report the short sense 358 * previously recorded, else continue normal processing 359 */ 360 361 if ((xfer->c_flags & C_SENSE) != 0 && 362 (chp->ch_status & WDCS_ERR) != 0 && 363 (chp->ch_error & WDCE_ABRT) != 0) { 364 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 365 "calling wdc_atapi_done(), sense 0x%x\n", 366 sc_xfer->sense.atapi_sense), DEBUG_INTR); 367 wdc_atapi_done(chp, xfer); 368 return 1; 369 } 370 371 if (xfer->c_flags & C_DMA) { 372 dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || 373 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 374 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 375 } 376 again: 377 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 378 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 379 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 380 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 381 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 382 "ire 0x%x :", xfer->c_bcount, 383 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 384 385 switch (phase) { 386 case PHASE_CMDOUT: 387 if (xfer->c_flags & C_SENSE) { 388 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 389 cmd_reqsense->opcode = REQUEST_SENSE; 390 cmd_reqsense->length = xfer->c_bcount; 391 cmd = cmd_reqsense; 392 } else { 393 cmd = sc_xfer->cmd; 394 } 395 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 396 /* Init the DMA channel if necessary */ 397 if (xfer->c_flags & C_DMA) { 398 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 399 chp->channel, xfer->drive, 400 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 401 sc_xfer->error = XS_DRIVER_STUFFUP; 402 break; 403 } 404 } 405 /* send packet command */ 406 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 407 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 408 if (drvp->drive_flags & DRIVE_CAP32) { 409 bus_space_write_multi_4(chp->data32iot, 410 chp->data32ioh, 0, 411 (u_int32_t *)cmd, 412 sc_xfer->cmdlen >> 2); 413 } else { 414 bus_space_write_multi_2(chp->cmd_iot, 415 chp->cmd_ioh, wd_data, 416 (u_int16_t *)cmd, 417 sc_xfer->cmdlen >> 1); 418 } 419 } else { 420 if (drvp->drive_flags & DRIVE_CAP32) { 421 bus_space_write_multi_stream_4(chp->data32iot, 422 chp->data32ioh, 0, 423 (u_int32_t *)cmd, 424 sc_xfer->cmdlen >> 2); 425 } else { 426 bus_space_write_multi_stream_2(chp->cmd_iot, 427 chp->cmd_ioh, wd_data, 428 (u_int16_t *)cmd, 429 sc_xfer->cmdlen >> 1); 430 } 431 } 432 /* Start the DMA channel if necessary */ 433 if (xfer->c_flags & C_DMA) { 434 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 435 chp->channel, xfer->drive, dma_flags); 436 } 437 438 if ((sc_xfer->flags & SCSI_POLL) == 0) { 439 chp->ch_flags |= WDCF_IRQ_WAIT; 440 } 441 return 1; 442 443 case PHASE_DATAOUT: 444 /* write data */ 445 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 446 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 447 (xfer->c_flags & C_DMA) != 0) { 448 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 449 if (xfer->c_flags & C_DMA) { 450 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 451 chp->channel, xfer->drive, dma_flags); 452 drvp->n_dmaerrs++; 453 } 454 sc_xfer->error = XS_TIMEOUT; 455 wdc_atapi_reset(chp, xfer); 456 return 1; 457 } 458 if (xfer->c_bcount < len) { 459 printf("wdc_atapi_intr: warning: write only " 460 "%d of %d requested bytes\n", xfer->c_bcount, len); 461 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 462 bus_space_write_multi_2(chp->cmd_iot, 463 chp->cmd_ioh, wd_data, 464 (u_int16_t *)((char *)xfer->databuf + 465 xfer->c_skip), 466 xfer->c_bcount >> 1); 467 } else { 468 bus_space_write_multi_stream_2(chp->cmd_iot, 469 chp->cmd_ioh, wd_data, 470 (u_int16_t *)((char *)xfer->databuf + 471 xfer->c_skip), 472 xfer->c_bcount >> 1); 473 } 474 for (i = xfer->c_bcount; i < len; i += 2) 475 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 476 wd_data, 0); 477 xfer->c_skip += xfer->c_bcount; 478 xfer->c_bcount = 0; 479 } else { 480 if (drvp->drive_flags & DRIVE_CAP32) { 481 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 482 bus_space_write_multi_4(chp->data32iot, 483 chp->data32ioh, 0, 484 (u_int32_t *)((char *)xfer->databuf + 485 xfer->c_skip), 486 len >> 2); 487 else 488 bus_space_write_multi_stream_4(chp->data32iot, 489 chp->data32ioh, wd_data, 490 (u_int32_t *)((char *)xfer->databuf + 491 xfer->c_skip), 492 len >> 2); 493 494 xfer->c_skip += len & 0xfffffffc; 495 xfer->c_bcount -= len & 0xfffffffc; 496 len = len & 0x03; 497 } 498 if (len > 0) { 499 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 500 bus_space_write_multi_2(chp->cmd_iot, 501 chp->cmd_ioh, wd_data, 502 (u_int16_t *)((char *)xfer->databuf + 503 xfer->c_skip), 504 len >> 1); 505 else 506 bus_space_write_multi_stream_2(chp->cmd_iot, 507 chp->cmd_ioh, wd_data, 508 (u_int16_t *)((char *)xfer->databuf + 509 xfer->c_skip), 510 len >> 1); 511 xfer->c_skip += len; 512 xfer->c_bcount -= len; 513 } 514 } 515 if ((sc_xfer->flags & SCSI_POLL) == 0) { 516 chp->ch_flags |= WDCF_IRQ_WAIT; 517 } 518 return 1; 519 520 case PHASE_DATAIN: 521 /* Read data */ 522 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 523 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 524 (xfer->c_flags & C_SENSE) == 0) || 525 (xfer->c_flags & C_DMA) != 0) { 526 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 527 if (xfer->c_flags & C_DMA) { 528 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 529 chp->channel, xfer->drive, dma_flags); 530 drvp->n_dmaerrs++; 531 } 532 sc_xfer->error = XS_TIMEOUT; 533 wdc_atapi_reset(chp, xfer); 534 return 1; 535 } 536 if (xfer->c_bcount < len) { 537 printf("wdc_atapi_intr: warning: reading only " 538 "%d of %d bytes\n", xfer->c_bcount, len); 539 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 540 bus_space_read_multi_2(chp->cmd_iot, 541 chp->cmd_ioh, wd_data, 542 (u_int16_t *)((char *)xfer->databuf + 543 xfer->c_skip), 544 xfer->c_bcount >> 1); 545 } else { 546 bus_space_read_multi_stream_2(chp->cmd_iot, 547 chp->cmd_ioh, wd_data, 548 (u_int16_t *)((char *)xfer->databuf + 549 xfer->c_skip), 550 xfer->c_bcount >> 1); 551 } 552 wdcbit_bucket(chp, len - xfer->c_bcount); 553 xfer->c_skip += xfer->c_bcount; 554 xfer->c_bcount = 0; 555 } else { 556 if (drvp->drive_flags & DRIVE_CAP32) { 557 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 558 bus_space_read_multi_4(chp->data32iot, 559 chp->data32ioh, 0, 560 (u_int32_t *)((char *)xfer->databuf + 561 xfer->c_skip), 562 len >> 2); 563 else 564 bus_space_read_multi_stream_4(chp->data32iot, 565 chp->data32ioh, wd_data, 566 (u_int32_t *)((char *)xfer->databuf + 567 xfer->c_skip), 568 len >> 2); 569 570 xfer->c_skip += len & 0xfffffffc; 571 xfer->c_bcount -= len & 0xfffffffc; 572 len = len & 0x03; 573 } 574 if (len > 0) { 575 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 576 bus_space_read_multi_2(chp->cmd_iot, 577 chp->cmd_ioh, wd_data, 578 (u_int16_t *)((char *)xfer->databuf + 579 xfer->c_skip), 580 len >> 1); 581 else 582 bus_space_read_multi_stream_2(chp->cmd_iot, 583 chp->cmd_ioh, wd_data, 584 (u_int16_t *)((char *)xfer->databuf + 585 xfer->c_skip), 586 len >> 1); 587 xfer->c_skip += len; 588 xfer->c_bcount -=len; 589 } 590 } 591 if ((sc_xfer->flags & SCSI_POLL) == 0) { 592 chp->ch_flags |= WDCF_IRQ_WAIT; 593 } 594 return 1; 595 596 case PHASE_ABORTED: 597 case PHASE_COMPLETED: 598 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 599 /* turn off DMA channel */ 600 if (xfer->c_flags & C_DMA) { 601 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 602 chp->channel, xfer->drive, dma_flags); 603 if (xfer->c_flags & C_SENSE) 604 xfer->c_bcount -= 605 sizeof(sc_xfer->sense.scsi_sense); 606 else 607 xfer->c_bcount -= sc_xfer->datalen; 608 } 609 if (xfer->c_flags & C_SENSE) { 610 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 611 /* 612 * request sense failed ! it's not suppossed 613 * to be possible 614 */ 615 if (dma_err < 0) 616 drvp->n_dmaerrs++; 617 sc_xfer->error = XS_RESET; 618 wdc_atapi_reset(chp, xfer); 619 return (1); 620 } else if (xfer->c_bcount < 621 sizeof(sc_xfer->sense.scsi_sense)) { 622 /* use the sense we just read */ 623 sc_xfer->error = XS_SENSE; 624 } else { 625 /* 626 * command completed, but no data was read. 627 * use the short sense we saved previsouly. 628 */ 629 sc_xfer->error = XS_SHORTSENSE; 630 } 631 } else { 632 sc_xfer->resid = xfer->c_bcount; 633 if (chp->ch_status & WDCS_ERR) { 634 /* save the short sense */ 635 sc_xfer->error = XS_SHORTSENSE; 636 sc_xfer->sense.atapi_sense = chp->ch_error; 637 if ((sc_xfer->sc_link->quirks & 638 ADEV_NOSENSE) == 0) { 639 /* 640 * let the driver issue a 641 * 'request sense' 642 */ 643 xfer->databuf = &sc_xfer->sense; 644 xfer->c_bcount = 645 sizeof(sc_xfer->sense.scsi_sense); 646 xfer->c_skip = 0; 647 xfer->c_flags |= C_SENSE; 648 untimeout(wdctimeout, chp); 649 wdc_atapi_start(chp, xfer); 650 return 1; 651 } 652 } else if (dma_err < 0) { 653 drvp->n_dmaerrs++; 654 sc_xfer->error = XS_RESET; 655 wdc_atapi_reset(chp, xfer); 656 return (1); 657 } 658 } 659 if (xfer->c_bcount != 0) { 660 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 661 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 662 } 663 #ifdef DIAGNOSTIC 664 if (xfer->c_bcount < 0) { 665 printf("wdc_atapi_intr warning: bcount value " 666 "is %d after io\n", xfer->c_bcount); 667 } 668 #endif 669 break; 670 671 default: 672 if (++retries<500) { 673 DELAY(100); 674 chp->ch_status = bus_space_read_1(chp->cmd_iot, 675 chp->cmd_ioh, wd_status); 676 chp->ch_error = bus_space_read_1(chp->cmd_iot, 677 chp->cmd_ioh, wd_error); 678 goto again; 679 } 680 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 681 if (chp->ch_status & WDCS_ERR) { 682 sc_xfer->error = XS_SHORTSENSE; 683 sc_xfer->sense.atapi_sense = chp->ch_error; 684 } else { 685 sc_xfer->error = XS_RESET; 686 wdc_atapi_reset(chp, xfer); 687 return (1); 688 } 689 } 690 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 691 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 692 DEBUG_INTR); 693 wdc_atapi_done(chp, xfer); 694 return (1); 695 } 696 697 int 698 wdc_atapi_ctrl(chp, xfer, irq) 699 struct channel_softc *chp; 700 struct wdc_xfer *xfer; 701 int irq; 702 { 703 struct scsipi_xfer *sc_xfer = xfer->cmd; 704 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 705 char *errstring = NULL; 706 int delay = (irq == 0) ? ATAPI_DELAY : 0; 707 708 /* Ack interrupt done in wait_for_unbusy */ 709 again: 710 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 711 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 712 DEBUG_INTR | DEBUG_FUNCS); 713 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 714 WDSD_IBM | (xfer->drive << 4)); 715 switch (drvp->state) { 716 case PIOMODE: 717 piomode: 718 /* Don't try to set mode if controller can't be adjusted */ 719 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 720 goto ready; 721 /* Also don't try if the drive didn't report its mode */ 722 if ((drvp->drive_flags & DRIVE_MODE) == 0) 723 goto ready;; 724 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 725 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 726 drvp->state = PIOMODE_WAIT; 727 break; 728 case PIOMODE_WAIT: 729 errstring = "piomode"; 730 if (wait_for_unbusy(chp, delay)) 731 goto timeout; 732 if (chp->ch_status & WDCS_ERR) { 733 if (drvp->PIO_mode < 3) { 734 drvp->PIO_mode = 3; 735 goto piomode; 736 } else { 737 goto error; 738 } 739 } 740 /* fall through */ 741 742 case DMAMODE: 743 if (drvp->drive_flags & DRIVE_UDMA) { 744 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 745 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 746 } else if (drvp->drive_flags & DRIVE_DMA) { 747 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 748 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 749 } else { 750 goto ready; 751 } 752 drvp->state = DMAMODE_WAIT; 753 break; 754 case DMAMODE_WAIT: 755 errstring = "dmamode"; 756 if (wait_for_unbusy(chp, delay)) 757 goto timeout; 758 if (chp->ch_status & WDCS_ERR) 759 goto error; 760 /* fall through */ 761 762 case READY: 763 ready: 764 drvp->state = READY; 765 xfer->c_intr = wdc_atapi_intr; 766 untimeout(wdctimeout, chp); 767 wdc_atapi_start(chp, xfer); 768 return 1; 769 } 770 if ((sc_xfer->flags & SCSI_POLL) == 0) { 771 chp->ch_flags |= WDCF_IRQ_WAIT; 772 xfer->c_intr = wdc_atapi_ctrl; 773 } else { 774 goto again; 775 } 776 return 1; 777 778 timeout: 779 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 780 return 0; /* IRQ was not for us */ 781 } 782 printf("%s:%d:%d: %s timed out\n", 783 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 784 sc_xfer->error = XS_TIMEOUT; 785 wdc_atapi_reset(chp, xfer); 786 return 1; 787 error: 788 printf("%s:%d:%d: %s ", 789 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 790 errstring); 791 printf("error (0x%x)\n", chp->ch_error); 792 sc_xfer->error = XS_SHORTSENSE; 793 sc_xfer->sense.atapi_sense = chp->ch_error; 794 wdc_atapi_reset(chp, xfer); 795 return 1; 796 } 797 798 void 799 wdc_atapi_done(chp, xfer) 800 struct channel_softc *chp; 801 struct wdc_xfer *xfer; 802 { 803 struct scsipi_xfer *sc_xfer = xfer->cmd; 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 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 821 scsipi_done(sc_xfer); 822 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 823 chp->ch_flags), DEBUG_XFERS); 824 wdcstart(chp); 825 } 826 827 void 828 wdc_atapi_reset(chp, xfer) 829 struct channel_softc *chp; 830 struct wdc_xfer *xfer; 831 { 832 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 833 struct scsipi_xfer *sc_xfer = xfer->cmd; 834 835 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 836 drvp->state = 0; 837 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 838 printf("%s:%d:%d: reset failed\n", 839 chp->wdc->sc_dev.dv_xname, chp->channel, 840 xfer->drive); 841 sc_xfer->error = XS_SELTIMEOUT; 842 } 843 wdc_atapi_done(chp, xfer); 844 return; 845 } 846
Indexes created Tue Sep 23 07:09:52 GMT 2025