atapi_wdc.c revision 1.21
1 /* $NetBSD: atapi_wdc.c,v 1.21 1999/04/08 11:29:01 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 & ATAPI_CFG_DRQ_MASK) != 282 ATAPI_CFG_IRQ_DRQ || (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 } else { 287 chp->ch_flags |= WDCF_IRQ_WAIT; 288 timeout(wdctimeout, chp, hz); 289 } 290 if (sc_xfer->flags & SCSI_POLL) { 291 while ((sc_xfer->flags & ITSDONE) == 0) { 292 /* Wait for at last 400ns for status bit to be valid */ 293 DELAY(1); 294 wdc_atapi_intr(chp, xfer, 0); 295 } 296 } 297 } 298 299 int 300 wdc_atapi_intr(chp, xfer, irq) 301 struct channel_softc *chp; 302 struct wdc_xfer *xfer; 303 int irq; 304 { 305 struct scsipi_xfer *sc_xfer = xfer->cmd; 306 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 307 int len, phase, i, retries=0; 308 int ire, dma_err = 0; 309 int dma_flags = 0; 310 struct scsipi_generic _cmd_reqsense; 311 struct scsipi_sense *cmd_reqsense = 312 (struct scsipi_sense *)&_cmd_reqsense; 313 void *cmd; 314 315 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 316 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 317 318 /* Is it not a transfer, but a control operation? */ 319 if (drvp->state < READY) { 320 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 321 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 322 drvp->state); 323 panic("wdc_atapi_intr: bad state\n"); 324 } 325 /* Ack interrupt done in wait_for_unbusy */ 326 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 327 WDSD_IBM | (xfer->drive << 4)); 328 if (wait_for_unbusy(chp, 329 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 330 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 331 return 0; /* IRQ was not for us */ 332 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 333 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 334 xfer->c_bcount, xfer->c_skip); 335 if (xfer->c_flags & C_DMA) 336 drvp->n_dmaerrs++; 337 sc_xfer->error = XS_TIMEOUT; 338 wdc_atapi_reset(chp, xfer); 339 return 1; 340 } 341 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 342 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 343 drvp->n_dmaerrs++; 344 /* 345 * if the request sense command was aborted, report the short sense 346 * previously recorded, else continue normal processing 347 */ 348 349 if ((xfer->c_flags & C_SENSE) != 0 && 350 (chp->ch_status & WDCS_ERR) != 0 && 351 (chp->ch_error & WDCE_ABRT) != 0) { 352 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 353 "calling wdc_atapi_done(), sense 0x%x\n", 354 sc_xfer->sense.atapi_sense), DEBUG_INTR); 355 wdc_atapi_done(chp, xfer); 356 return 1; 357 } 358 359 if (xfer->c_flags & C_DMA) { 360 dma_flags = ((sc_xfer->flags & SCSI_DATA_IN) || 361 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 362 dma_flags |= sc_xfer->flags & SCSI_POLL ? WDC_DMA_POLL : 0; 363 } 364 again: 365 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 366 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 367 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 368 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 369 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 370 "ire 0x%x :", xfer->c_bcount, 371 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 372 373 switch (phase) { 374 case PHASE_CMDOUT: 375 if (xfer->c_flags & C_SENSE) { 376 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 377 cmd_reqsense->opcode = REQUEST_SENSE; 378 cmd_reqsense->length = xfer->c_bcount; 379 cmd = cmd_reqsense; 380 } else { 381 cmd = sc_xfer->cmd; 382 } 383 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 384 /* Init the DMA channel if necessary */ 385 if (xfer->c_flags & C_DMA) { 386 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 387 chp->channel, xfer->drive, 388 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 389 sc_xfer->error = XS_DRIVER_STUFFUP; 390 break; 391 } 392 } 393 /* send packet command */ 394 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 395 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 396 if (drvp->drive_flags & DRIVE_CAP32) { 397 bus_space_write_multi_4(chp->data32iot, 398 chp->data32ioh, 0, 399 (u_int32_t *)cmd, 400 sc_xfer->cmdlen >> 2); 401 } else { 402 bus_space_write_multi_2(chp->cmd_iot, 403 chp->cmd_ioh, wd_data, 404 (u_int16_t *)cmd, 405 sc_xfer->cmdlen >> 1); 406 } 407 } else { 408 if (drvp->drive_flags & DRIVE_CAP32) { 409 bus_space_write_multi_stream_4(chp->data32iot, 410 chp->data32ioh, 0, 411 (u_int32_t *)cmd, 412 sc_xfer->cmdlen >> 2); 413 } else { 414 bus_space_write_multi_stream_2(chp->cmd_iot, 415 chp->cmd_ioh, wd_data, 416 (u_int16_t *)cmd, 417 sc_xfer->cmdlen >> 1); 418 } 419 } 420 /* Start the DMA channel if necessary */ 421 if (xfer->c_flags & C_DMA) { 422 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 423 chp->channel, xfer->drive, dma_flags); 424 } 425 426 if ((sc_xfer->flags & SCSI_POLL) == 0) { 427 chp->ch_flags |= WDCF_IRQ_WAIT; 428 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 429 } 430 return 1; 431 432 case PHASE_DATAOUT: 433 /* write data */ 434 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 435 if ((sc_xfer->flags & SCSI_DATA_OUT) == 0 || 436 (xfer->c_flags & C_DMA) != 0) { 437 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 438 if (xfer->c_flags & C_DMA) { 439 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 440 chp->channel, xfer->drive, dma_flags); 441 drvp->n_dmaerrs++; 442 } 443 sc_xfer->error = XS_TIMEOUT; 444 wdc_atapi_reset(chp, xfer); 445 return 1; 446 } 447 if (xfer->c_bcount < len) { 448 printf("wdc_atapi_intr: warning: write only " 449 "%d of %d requested bytes\n", xfer->c_bcount, len); 450 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 451 bus_space_write_multi_2(chp->cmd_iot, 452 chp->cmd_ioh, wd_data, 453 (u_int16_t *)((char *)xfer->databuf + 454 xfer->c_skip), 455 xfer->c_bcount >> 1); 456 } else { 457 bus_space_write_multi_stream_2(chp->cmd_iot, 458 chp->cmd_ioh, wd_data, 459 (u_int16_t *)((char *)xfer->databuf + 460 xfer->c_skip), 461 xfer->c_bcount >> 1); 462 } 463 for (i = xfer->c_bcount; i < len; i += 2) 464 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 465 wd_data, 0); 466 xfer->c_skip += xfer->c_bcount; 467 xfer->c_bcount = 0; 468 } else { 469 if (drvp->drive_flags & DRIVE_CAP32) { 470 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 471 bus_space_write_multi_4(chp->data32iot, 472 chp->data32ioh, 0, 473 (u_int32_t *)((char *)xfer->databuf + 474 xfer->c_skip), 475 len >> 2); 476 else 477 bus_space_write_multi_stream_4(chp->data32iot, 478 chp->data32ioh, wd_data, 479 (u_int32_t *)((char *)xfer->databuf + 480 xfer->c_skip), 481 len >> 2); 482 483 xfer->c_skip += len & 0xfffffffc; 484 xfer->c_bcount -= len & 0xfffffffc; 485 len = len & 0x03; 486 } 487 if (len > 0) { 488 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 489 bus_space_write_multi_2(chp->cmd_iot, 490 chp->cmd_ioh, wd_data, 491 (u_int16_t *)((char *)xfer->databuf + 492 xfer->c_skip), 493 len >> 1); 494 else 495 bus_space_write_multi_stream_2(chp->cmd_iot, 496 chp->cmd_ioh, wd_data, 497 (u_int16_t *)((char *)xfer->databuf + 498 xfer->c_skip), 499 len >> 1); 500 xfer->c_skip += len; 501 xfer->c_bcount -= len; 502 } 503 } 504 if ((sc_xfer->flags & SCSI_POLL) == 0) { 505 chp->ch_flags |= WDCF_IRQ_WAIT; 506 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 507 } 508 return 1; 509 510 case PHASE_DATAIN: 511 /* Read data */ 512 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 513 if (((sc_xfer->flags & SCSI_DATA_IN) == 0 && 514 (xfer->c_flags & C_SENSE) == 0) || 515 (xfer->c_flags & C_DMA) != 0) { 516 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 517 if (xfer->c_flags & C_DMA) { 518 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 519 chp->channel, xfer->drive, dma_flags); 520 drvp->n_dmaerrs++; 521 } 522 sc_xfer->error = XS_TIMEOUT; 523 wdc_atapi_reset(chp, xfer); 524 return 1; 525 } 526 if (xfer->c_bcount < len) { 527 printf("wdc_atapi_intr: warning: reading only " 528 "%d of %d bytes\n", xfer->c_bcount, len); 529 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 530 bus_space_read_multi_2(chp->cmd_iot, 531 chp->cmd_ioh, wd_data, 532 (u_int16_t *)((char *)xfer->databuf + 533 xfer->c_skip), 534 xfer->c_bcount >> 1); 535 } else { 536 bus_space_read_multi_stream_2(chp->cmd_iot, 537 chp->cmd_ioh, wd_data, 538 (u_int16_t *)((char *)xfer->databuf + 539 xfer->c_skip), 540 xfer->c_bcount >> 1); 541 } 542 wdcbit_bucket(chp, len - xfer->c_bcount); 543 xfer->c_skip += xfer->c_bcount; 544 xfer->c_bcount = 0; 545 } else { 546 if (drvp->drive_flags & DRIVE_CAP32) { 547 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 548 bus_space_read_multi_4(chp->data32iot, 549 chp->data32ioh, 0, 550 (u_int32_t *)((char *)xfer->databuf + 551 xfer->c_skip), 552 len >> 2); 553 else 554 bus_space_read_multi_stream_4(chp->data32iot, 555 chp->data32ioh, wd_data, 556 (u_int32_t *)((char *)xfer->databuf + 557 xfer->c_skip), 558 len >> 2); 559 560 xfer->c_skip += len & 0xfffffffc; 561 xfer->c_bcount -= len & 0xfffffffc; 562 len = len & 0x03; 563 } 564 if (len > 0) { 565 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 566 bus_space_read_multi_2(chp->cmd_iot, 567 chp->cmd_ioh, wd_data, 568 (u_int16_t *)((char *)xfer->databuf + 569 xfer->c_skip), 570 len >> 1); 571 else 572 bus_space_read_multi_stream_2(chp->cmd_iot, 573 chp->cmd_ioh, wd_data, 574 (u_int16_t *)((char *)xfer->databuf + 575 xfer->c_skip), 576 len >> 1); 577 xfer->c_skip += len; 578 xfer->c_bcount -=len; 579 } 580 } 581 if ((sc_xfer->flags & SCSI_POLL) == 0) { 582 chp->ch_flags |= WDCF_IRQ_WAIT; 583 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 584 } 585 return 1; 586 587 case PHASE_ABORTED: 588 case PHASE_COMPLETED: 589 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 590 /* turn off DMA channel */ 591 if (xfer->c_flags & C_DMA) { 592 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 593 chp->channel, xfer->drive, dma_flags); 594 if (xfer->c_flags & C_SENSE) 595 xfer->c_bcount -= 596 sizeof(sc_xfer->sense.scsi_sense); 597 else 598 xfer->c_bcount -= sc_xfer->datalen; 599 } 600 if (xfer->c_flags & C_SENSE) { 601 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 602 /* 603 * request sense failed ! it's not suppossed 604 * to be possible 605 */ 606 if (dma_err < 0) 607 drvp->n_dmaerrs++; 608 sc_xfer->error = XS_RESET; 609 wdc_atapi_reset(chp, xfer); 610 return (1); 611 } else if (xfer->c_bcount < 612 sizeof(sc_xfer->sense.scsi_sense)) { 613 /* use the sense we just read */ 614 sc_xfer->error = XS_SENSE; 615 } else { 616 /* 617 * command completed, but no data was read. 618 * use the short sense we saved previsouly. 619 */ 620 sc_xfer->error = XS_SHORTSENSE; 621 } 622 } else { 623 if (chp->ch_status & WDCS_ERR) { 624 /* save the short sense */ 625 sc_xfer->error = XS_SHORTSENSE; 626 sc_xfer->sense.atapi_sense = chp->ch_error; 627 if ((sc_xfer->sc_link->quirks & 628 ADEV_NOSENSE) == 0) { 629 /* 630 * let the driver issue a 631 * 'request sense' 632 */ 633 xfer->databuf = &sc_xfer->sense; 634 xfer->c_bcount = 635 sizeof(sc_xfer->sense.scsi_sense); 636 xfer->c_flags |= C_SENSE; 637 wdc_atapi_start(chp, xfer); 638 return 1; 639 } 640 } else if (dma_err < 0) { 641 drvp->n_dmaerrs++; 642 sc_xfer->error = XS_RESET; 643 wdc_atapi_reset(chp, xfer); 644 return (1); 645 } 646 } 647 if (xfer->c_bcount != 0) { 648 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 649 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 650 } 651 #ifdef DIAGNOSTIC 652 if (xfer->c_bcount < 0) { 653 printf("wdc_atapi_intr warning: bcount value " 654 "is %d after io\n", xfer->c_bcount); 655 } 656 #endif 657 break; 658 659 default: 660 if (++retries<500) { 661 DELAY(100); 662 chp->ch_status = bus_space_read_1(chp->cmd_iot, 663 chp->cmd_ioh, wd_status); 664 chp->ch_error = bus_space_read_1(chp->cmd_iot, 665 chp->cmd_ioh, wd_error); 666 goto again; 667 } 668 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 669 if (chp->ch_status & WDCS_ERR) { 670 sc_xfer->error = XS_SHORTSENSE; 671 sc_xfer->sense.atapi_sense = chp->ch_error; 672 } else { 673 sc_xfer->error = XS_RESET; 674 wdc_atapi_reset(chp, xfer); 675 return (1); 676 } 677 } 678 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 679 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 680 DEBUG_INTR); 681 wdc_atapi_done(chp, xfer); 682 return (1); 683 } 684 685 int 686 wdc_atapi_ctrl(chp, xfer, irq) 687 struct channel_softc *chp; 688 struct wdc_xfer *xfer; 689 int irq; 690 { 691 struct scsipi_xfer *sc_xfer = xfer->cmd; 692 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 693 char *errstring = NULL; 694 int delay = (irq == 0) ? ATAPI_DELAY : 0; 695 696 /* Ack interrupt done in wait_for_unbusy */ 697 again: 698 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 699 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 700 DEBUG_INTR | DEBUG_FUNCS); 701 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 702 WDSD_IBM | (xfer->drive << 4)); 703 switch (drvp->state) { 704 case PIOMODE: 705 /* Don't try to set mode if controller can't be adjusted */ 706 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 707 goto ready; 708 /* Also don't try if the drive didn't report its mode */ 709 if ((drvp->drive_flags & DRIVE_MODE) == 0) 710 goto ready;; 711 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 712 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 713 drvp->state = PIOMODE_WAIT; 714 break; 715 case PIOMODE_WAIT: 716 errstring = "piomode"; 717 if (wait_for_unbusy(chp, delay)) 718 goto timeout; 719 if (chp->ch_status & WDCS_ERR) 720 goto error; 721 /* fall through */ 722 723 case DMAMODE: 724 if (drvp->drive_flags & DRIVE_UDMA) { 725 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 726 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 727 } else if (drvp->drive_flags & DRIVE_DMA) { 728 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 729 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 730 } else { 731 goto ready; 732 } 733 drvp->state = DMAMODE_WAIT; 734 break; 735 case DMAMODE_WAIT: 736 errstring = "dmamode"; 737 if (wait_for_unbusy(chp, delay)) 738 goto timeout; 739 if (chp->ch_status & WDCS_ERR) 740 goto error; 741 /* fall through */ 742 743 case READY: 744 ready: 745 drvp->state = READY; 746 xfer->c_intr = wdc_atapi_intr; 747 wdc_atapi_start(chp, xfer); 748 return 1; 749 } 750 if ((sc_xfer->flags & SCSI_POLL) == 0) { 751 chp->ch_flags |= WDCF_IRQ_WAIT; 752 xfer->c_intr = wdc_atapi_ctrl; 753 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 754 } else { 755 goto again; 756 } 757 return 1; 758 759 timeout: 760 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 761 return 0; /* IRQ was not for us */ 762 } 763 printf("%s:%d:%d: %s timed out\n", 764 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 765 sc_xfer->error = XS_TIMEOUT; 766 wdc_atapi_reset(chp, xfer); 767 return 1; 768 error: 769 printf("%s:%d:%d: %s ", 770 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 771 errstring); 772 printf("error (0x%x)\n", chp->ch_error); 773 sc_xfer->error = XS_SHORTSENSE; 774 sc_xfer->sense.atapi_sense = chp->ch_error; 775 wdc_atapi_reset(chp, xfer); 776 return 1; 777 } 778 779 void 780 wdc_atapi_done(chp, xfer) 781 struct channel_softc *chp; 782 struct wdc_xfer *xfer; 783 { 784 struct scsipi_xfer *sc_xfer = xfer->cmd; 785 int need_done = xfer->c_flags & C_NEEDDONE; 786 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 787 788 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 789 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 790 (u_int)xfer->c_flags), DEBUG_XFERS); 791 sc_xfer->resid = xfer->c_bcount; 792 /* remove this command from xfer queue */ 793 xfer->c_skip = 0; 794 wdc_free_xfer(chp, xfer); 795 sc_xfer->flags |= ITSDONE; 796 if (drvp->n_dmaerrs || 797 (sc_xfer->error != XS_NOERROR && sc_xfer->error != XS_SENSE && 798 sc_xfer->error != XS_SHORTSENSE)) { 799 drvp->n_dmaerrs = 0; 800 wdc_downgrade_mode(drvp); 801 } 802 803 if (need_done) { 804 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 805 scsipi_done(sc_xfer); 806 } 807 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 808 chp->ch_flags), DEBUG_XFERS); 809 wdcstart(chp); 810 } 811 812 void 813 wdc_atapi_reset(chp, xfer) 814 struct channel_softc *chp; 815 struct wdc_xfer *xfer; 816 { 817 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 818 struct scsipi_xfer *sc_xfer = xfer->cmd; 819 820 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 821 drvp->state = 0; 822 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 823 printf("%s:%d:%d: reset failed\n", 824 chp->wdc->sc_dev.dv_xname, chp->channel, 825 xfer->drive); 826 sc_xfer->error = XS_SELTIMEOUT; 827 } 828 wdc_atapi_done(chp, xfer); 829 return; 830 } 831
Indexes created Mon Sep 22 13:09:51 GMT 2025