atapi_wdc.c revision 1.20
1 /* $NetBSD: atapi_wdc.c,v 1.20 1999/04/01 21:46:30 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 /* 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, 0); 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 wdc_atapi_intr(chp, xfer, 0); 286 } 287 if (sc_xfer->flags & SCSI_POLL) { 288 while ((sc_xfer->flags & ITSDONE) == 0) { 289 /* Wait for at last 400ns for status bit to be valid */ 290 DELAY(1); 291 wdc_atapi_intr(chp, xfer, 0); 292 } 293 } 294 } 295 296 int 297 wdc_atapi_intr(chp, xfer, irq) 298 struct channel_softc *chp; 299 struct wdc_xfer *xfer; 300 int irq; 301 { 302 struct scsipi_xfer *sc_xfer = xfer->cmd; 303 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 304 int len, phase, i, retries=0; 305 int ire, dma_err = 0; 306 int dma_flags = 0; 307 struct scsipi_generic _cmd_reqsense; 308 struct scsipi_sense *cmd_reqsense = 309 (struct scsipi_sense *)&_cmd_reqsense; 310 void *cmd; 311 312 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 313 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 314 315 /* Is it not a transfer, but a control operation? */ 316 if (drvp->state < READY) { 317 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 318 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 319 drvp->state); 320 panic("wdc_atapi_intr: bad state\n"); 321 } 322 /* Ack interrupt done in wait_for_unbusy */ 323 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 324 WDSD_IBM | (xfer->drive << 4)); 325 if (wait_for_unbusy(chp, 326 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 327 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 328 return 0; /* IRQ was not for us */ 329 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 330 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 331 xfer->c_bcount, xfer->c_skip); 332 if (xfer->c_flags & C_DMA) 333 drvp->n_dmaerrs++; 334 sc_xfer->error = XS_TIMEOUT; 335 wdc_atapi_reset(chp, xfer); 336 return 1; 337 } 338 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 339 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 340 drvp->n_dmaerrs++; 341 /* 342 * if the request sense command was aborted, report the short sense 343 * previously recorded, else continue normal processing 344 */ 345 346 if ((xfer->c_flags & C_SENSE) != 0 && 347 (chp->ch_status & WDCS_ERR) != 0 && 348 (chp->ch_error & WDCE_ABRT) != 0) { 349 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 350 "calling wdc_atapi_done(), sense 0x%x\n", 351 sc_xfer->sense.atapi_sense), DEBUG_INTR); 352 wdc_atapi_done(chp, xfer); 353 return 1; 354 } 355 356 if (xfer->c_flags & C_DMA) { 357 dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || 358 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 359 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 360 } 361 again: 362 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 363 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 364 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 365 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 366 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 367 "ire 0x%x :", xfer->c_bcount, 368 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 369 370 switch (phase) { 371 case PHASE_CMDOUT: 372 if (xfer->c_flags & C_SENSE) { 373 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 374 cmd_reqsense->opcode = REQUEST_SENSE; 375 cmd_reqsense->length = xfer->c_bcount; 376 cmd = cmd_reqsense; 377 } else { 378 cmd = sc_xfer->cmd; 379 } 380 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 381 /* Init the DMA channel if necessary */ 382 if (xfer->c_flags & C_DMA) { 383 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 384 chp->channel, xfer->drive, 385 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 386 sc_xfer->error = XS_DRIVER_STUFFUP; 387 break; 388 } 389 } 390 /* send packet command */ 391 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 392 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 393 if (drvp->drive_flags & DRIVE_CAP32) { 394 bus_space_write_multi_4(chp->data32iot, 395 chp->data32ioh, 0, 396 (u_int32_t *)cmd, 397 sc_xfer->cmdlen >> 2); 398 } else { 399 bus_space_write_multi_2(chp->cmd_iot, 400 chp->cmd_ioh, wd_data, 401 (u_int16_t *)cmd, 402 sc_xfer->cmdlen >> 1); 403 } 404 } else { 405 if (drvp->drive_flags & DRIVE_CAP32) { 406 bus_space_write_multi_stream_4(chp->data32iot, 407 chp->data32ioh, 0, 408 (u_int32_t *)cmd, 409 sc_xfer->cmdlen >> 2); 410 } else { 411 bus_space_write_multi_stream_2(chp->cmd_iot, 412 chp->cmd_ioh, wd_data, 413 (u_int16_t *)cmd, 414 sc_xfer->cmdlen >> 1); 415 } 416 } 417 /* Start the DMA channel if necessary */ 418 if (xfer->c_flags & C_DMA) { 419 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 420 chp->channel, xfer->drive, dma_flags); 421 } 422 423 if ((sc_xfer->flags & SCSI_POLL) == 0) { 424 chp->ch_flags |= WDCF_IRQ_WAIT; 425 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 426 } 427 return 1; 428 429 case PHASE_DATAOUT: 430 /* write data */ 431 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 432 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 433 (xfer->c_flags & C_DMA) != 0) { 434 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 435 if (xfer->c_flags & C_DMA) { 436 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 437 chp->channel, xfer->drive, dma_flags); 438 drvp->n_dmaerrs++; 439 } 440 sc_xfer->error = XS_TIMEOUT; 441 wdc_atapi_reset(chp, xfer); 442 return 1; 443 } 444 if (xfer->c_bcount < len) { 445 printf("wdc_atapi_intr: warning: write only " 446 "%d of %d requested bytes\n", xfer->c_bcount, len); 447 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 448 bus_space_write_multi_2(chp->cmd_iot, 449 chp->cmd_ioh, wd_data, 450 (u_int16_t *)((char *)xfer->databuf + 451 xfer->c_skip), 452 xfer->c_bcount >> 1); 453 } else { 454 bus_space_write_multi_stream_2(chp->cmd_iot, 455 chp->cmd_ioh, wd_data, 456 (u_int16_t *)((char *)xfer->databuf + 457 xfer->c_skip), 458 xfer->c_bcount >> 1); 459 } 460 for (i = xfer->c_bcount; i < len; i += 2) 461 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 462 wd_data, 0); 463 xfer->c_skip += xfer->c_bcount; 464 xfer->c_bcount = 0; 465 } else { 466 if (drvp->drive_flags & DRIVE_CAP32) { 467 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 468 bus_space_write_multi_4(chp->data32iot, 469 chp->data32ioh, 0, 470 (u_int32_t *)((char *)xfer->databuf + 471 xfer->c_skip), 472 len >> 2); 473 else 474 bus_space_write_multi_stream_4(chp->data32iot, 475 chp->data32ioh, wd_data, 476 (u_int32_t *)((char *)xfer->databuf + 477 xfer->c_skip), 478 len >> 2); 479 480 xfer->c_skip += len & 0xfffffffc; 481 xfer->c_bcount -= len & 0xfffffffc; 482 len = len & 0x03; 483 } 484 if (len > 0) { 485 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 486 bus_space_write_multi_2(chp->cmd_iot, 487 chp->cmd_ioh, wd_data, 488 (u_int16_t *)((char *)xfer->databuf + 489 xfer->c_skip), 490 len >> 1); 491 else 492 bus_space_write_multi_stream_2(chp->cmd_iot, 493 chp->cmd_ioh, wd_data, 494 (u_int16_t *)((char *)xfer->databuf + 495 xfer->c_skip), 496 len >> 1); 497 xfer->c_skip += len; 498 xfer->c_bcount -= len; 499 } 500 } 501 if ((sc_xfer->flags & SCSI_POLL) == 0) { 502 chp->ch_flags |= WDCF_IRQ_WAIT; 503 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 504 } 505 return 1; 506 507 case PHASE_DATAIN: 508 /* Read data */ 509 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 510 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 511 (xfer->c_flags & C_SENSE) == 0) || 512 (xfer->c_flags & C_DMA) != 0) { 513 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 514 if (xfer->c_flags & C_DMA) { 515 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 516 chp->channel, xfer->drive, dma_flags); 517 drvp->n_dmaerrs++; 518 } 519 sc_xfer->error = XS_TIMEOUT; 520 wdc_atapi_reset(chp, xfer); 521 return 1; 522 } 523 if (xfer->c_bcount < len) { 524 printf("wdc_atapi_intr: warning: reading only " 525 "%d of %d bytes\n", xfer->c_bcount, len); 526 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 527 bus_space_read_multi_2(chp->cmd_iot, 528 chp->cmd_ioh, wd_data, 529 (u_int16_t *)((char *)xfer->databuf + 530 xfer->c_skip), 531 xfer->c_bcount >> 1); 532 } else { 533 bus_space_read_multi_stream_2(chp->cmd_iot, 534 chp->cmd_ioh, wd_data, 535 (u_int16_t *)((char *)xfer->databuf + 536 xfer->c_skip), 537 xfer->c_bcount >> 1); 538 } 539 wdcbit_bucket(chp, len - xfer->c_bcount); 540 xfer->c_skip += xfer->c_bcount; 541 xfer->c_bcount = 0; 542 } else { 543 if (drvp->drive_flags & DRIVE_CAP32) { 544 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 545 bus_space_read_multi_4(chp->data32iot, 546 chp->data32ioh, 0, 547 (u_int32_t *)((char *)xfer->databuf + 548 xfer->c_skip), 549 len >> 2); 550 else 551 bus_space_read_multi_stream_4(chp->data32iot, 552 chp->data32ioh, wd_data, 553 (u_int32_t *)((char *)xfer->databuf + 554 xfer->c_skip), 555 len >> 2); 556 557 xfer->c_skip += len & 0xfffffffc; 558 xfer->c_bcount -= len & 0xfffffffc; 559 len = len & 0x03; 560 } 561 if (len > 0) { 562 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 563 bus_space_read_multi_2(chp->cmd_iot, 564 chp->cmd_ioh, wd_data, 565 (u_int16_t *)((char *)xfer->databuf + 566 xfer->c_skip), 567 len >> 1); 568 else 569 bus_space_read_multi_stream_2(chp->cmd_iot, 570 chp->cmd_ioh, wd_data, 571 (u_int16_t *)((char *)xfer->databuf + 572 xfer->c_skip), 573 len >> 1); 574 xfer->c_skip += len; 575 xfer->c_bcount -=len; 576 } 577 } 578 if ((sc_xfer->flags & SCSI_POLL) == 0) { 579 chp->ch_flags |= WDCF_IRQ_WAIT; 580 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 581 } 582 return 1; 583 584 case PHASE_ABORTED: 585 case PHASE_COMPLETED: 586 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 587 /* turn off DMA channel */ 588 if (xfer->c_flags & C_DMA) { 589 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 590 chp->channel, xfer->drive, dma_flags); 591 if (xfer->c_flags & C_SENSE) 592 xfer->c_bcount -= 593 sizeof(sc_xfer->sense.scsi_sense); 594 else 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, irq) 684 struct channel_softc *chp; 685 struct wdc_xfer *xfer; 686 int irq; 687 { 688 struct scsipi_xfer *sc_xfer = xfer->cmd; 689 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 690 char *errstring = NULL; 691 int delay = (irq == 0) ? ATAPI_DELAY : 0; 692 693 /* Ack interrupt done in wait_for_unbusy */ 694 again: 695 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 696 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 697 DEBUG_INTR | DEBUG_FUNCS); 698 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 699 WDSD_IBM | (xfer->drive << 4)); 700 switch (drvp->state) { 701 case PIOMODE: 702 /* Don't try to set mode if controller can't be adjusted */ 703 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 704 goto ready; 705 /* Also don't try if the drive didn't report its mode */ 706 if ((drvp->drive_flags & DRIVE_MODE) == 0) 707 goto ready;; 708 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 709 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 710 drvp->state = PIOMODE_WAIT; 711 break; 712 case PIOMODE_WAIT: 713 errstring = "piomode"; 714 if (wait_for_unbusy(chp, delay)) 715 goto timeout; 716 if (chp->ch_status & WDCS_ERR) 717 goto error; 718 /* fall through */ 719 720 case DMAMODE: 721 if (drvp->drive_flags & DRIVE_UDMA) { 722 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 723 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 724 } else if (drvp->drive_flags & DRIVE_DMA) { 725 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 726 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 727 } else { 728 goto ready; 729 } 730 drvp->state = DMAMODE_WAIT; 731 break; 732 case DMAMODE_WAIT: 733 errstring = "dmamode"; 734 if (wait_for_unbusy(chp, delay)) 735 goto timeout; 736 if (chp->ch_status & WDCS_ERR) 737 goto error; 738 /* fall through */ 739 740 case READY: 741 ready: 742 drvp->state = READY; 743 xfer->c_intr = wdc_atapi_intr; 744 wdc_atapi_start(chp, xfer); 745 return 1; 746 } 747 if ((sc_xfer->flags & SCSI_POLL) == 0) { 748 chp->ch_flags |= WDCF_IRQ_WAIT; 749 xfer->c_intr = wdc_atapi_ctrl; 750 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 751 } else { 752 goto again; 753 } 754 return 1; 755 756 timeout: 757 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 758 return 0; /* IRQ was not for us */ 759 } 760 printf("%s:%d:%d: %s timed out\n", 761 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 762 sc_xfer->error = XS_TIMEOUT; 763 wdc_atapi_reset(chp, xfer); 764 return 1; 765 error: 766 printf("%s:%d:%d: %s ", 767 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 768 errstring); 769 printf("error (0x%x)\n", chp->ch_error); 770 sc_xfer->error = XS_SHORTSENSE; 771 sc_xfer->sense.atapi_sense = chp->ch_error; 772 wdc_atapi_reset(chp, xfer); 773 return 1; 774 } 775 776 void 777 wdc_atapi_done(chp, xfer) 778 struct channel_softc *chp; 779 struct wdc_xfer *xfer; 780 { 781 struct scsipi_xfer *sc_xfer = xfer->cmd; 782 int need_done = xfer->c_flags & C_NEEDDONE; 783 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 784 785 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 786 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 787 (u_int)xfer->c_flags), DEBUG_XFERS); 788 sc_xfer->resid = xfer->c_bcount; 789 /* remove this command from xfer queue */ 790 xfer->c_skip = 0; 791 wdc_free_xfer(chp, xfer); 792 sc_xfer->flags |= ITSDONE; 793 if (drvp->n_dmaerrs || 794 (sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE && 795 sc_xfer->error != XS_SHORTSENSE)) { 796 drvp->n_dmaerrs = 0; 797 wdc_downgrade_mode(drvp); 798 } 799 800 if (need_done) { 801 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 802 scsipi_done(sc_xfer); 803 } 804 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 805 chp->ch_flags), DEBUG_XFERS); 806 wdcstart(chp); 807 } 808 809 void 810 wdc_atapi_reset(chp, xfer) 811 struct channel_softc *chp; 812 struct wdc_xfer *xfer; 813 { 814 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 815 struct scsipi_xfer *sc_xfer = xfer->cmd; 816 817 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 818 drvp->state = 0; 819 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 820 printf("%s:%d:%d: reset failed\n", 821 chp->wdc->sc_dev.dv_xname, chp->channel, 822 xfer->drive); 823 sc_xfer->error = XS_SELTIMEOUT; 824 } 825 wdc_atapi_done(chp, xfer); 826 return; 827 } 828
Indexes created Tue Sep 23 14:10:03 GMT 2025