atapi_wdc.c revision 1.30
1 /* $NetBSD: atapi_wdc.c,v 1.30 2000/01/17 00:01:01 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 void wdc_atapi_kill_xfer __P((struct channel_softc *, struct wdc_xfer *)); 91 int wdc_atapi_ctrl __P((struct channel_softc *, struct wdc_xfer *, int)); 92 void wdc_atapi_done __P((struct channel_softc *, struct wdc_xfer *)); 93 void wdc_atapi_reset __P((struct channel_softc *, struct wdc_xfer *)); 94 int wdc_atapi_send_cmd __P((struct scsipi_xfer *sc_xfer)); 95 96 #define MAX_SIZE MAXPHYS 97 98 void 99 wdc_atapibus_attach(chp) 100 struct channel_softc *chp; 101 { 102 struct wdc_softc *wdc = chp->wdc; 103 int channel = chp->channel; 104 struct ata_atapi_attach aa_link; 105 106 /* 107 * Fill in the adapter. 108 */ 109 wdc->sc_atapi_adapter.scsipi_cmd = wdc_atapi_send_cmd; 110 wdc->sc_atapi_adapter.scsipi_minphys = wdc_atapi_minphys; 111 112 memset(&aa_link, 0, sizeof(struct ata_atapi_attach)); 113 aa_link.aa_type = T_ATAPI; 114 aa_link.aa_channel = channel; 115 aa_link.aa_openings = 1; 116 aa_link.aa_drv_data = chp->ch_drive; /* pass the whole array */ 117 aa_link.aa_bus_private = &wdc->sc_atapi_adapter; 118 chp->atapibus = config_found(&wdc->sc_dev, (void *)&aa_link, 119 atapi_print); 120 } 121 122 void 123 wdc_atapi_minphys (struct buf *bp) 124 { 125 if(bp->b_bcount > MAX_SIZE) 126 bp->b_bcount = MAX_SIZE; 127 minphys(bp); 128 } 129 130 /* 131 * Kill off all pending xfers for a scsipi_link. 132 * 133 * Must be called at splbio(). 134 */ 135 void 136 atapi_kill_pending(sc_link) 137 struct scsipi_link *sc_link; 138 { 139 struct wdc_softc *wdc = (void *)sc_link->adapter_softc; 140 struct channel_softc *chp = 141 wdc->channels[sc_link->scsipi_atapi.channel]; 142 143 wdc_kill_pending(chp); 144 } 145 146 void 147 wdc_atapi_kill_xfer(chp, xfer) 148 struct channel_softc *chp; 149 struct wdc_xfer *xfer; 150 { 151 struct scsipi_xfer *sc_xfer = xfer->cmd; 152 153 untimeout(wdctimeout, chp); 154 /* remove this command from xfer queue */ 155 wdc_free_xfer(chp, xfer); 156 sc_xfer->xs_status |= XS_STS_DONE; 157 sc_xfer->error = XS_DRIVER_STUFFUP; 158 scsipi_done(sc_xfer); 159 } 160 161 int 162 wdc_atapi_get_params(ab_link, drive, flags, id) 163 struct scsipi_link *ab_link; 164 u_int8_t drive; 165 int flags; 166 struct ataparams *id; 167 { 168 struct wdc_softc *wdc = (void*)ab_link->adapter_softc; 169 struct channel_softc *chp = 170 wdc->channels[ab_link->scsipi_atapi.channel]; 171 struct wdc_command wdc_c; 172 173 /* if no ATAPI device detected at wdc attach time, skip */ 174 /* 175 * XXX this will break scsireprobe if this is of any interest for 176 * ATAPI devices one day. 177 */ 178 if ((chp->ch_drive[drive].drive_flags & DRIVE_ATAPI) == 0) { 179 WDCDEBUG_PRINT(("wdc_atapi_get_params: drive %d not present\n", 180 drive), DEBUG_PROBE); 181 return -1; 182 } 183 memset(&wdc_c, 0, sizeof(struct wdc_command)); 184 wdc_c.r_command = ATAPI_SOFT_RESET; 185 wdc_c.r_st_bmask = 0; 186 wdc_c.r_st_pmask = 0; 187 wdc_c.flags = AT_POLL; 188 wdc_c.timeout = WDC_RESET_WAIT; 189 if (wdc_exec_command(&chp->ch_drive[drive], &wdc_c) != WDC_COMPLETE) { 190 printf("wdc_atapi_get_params: ATAPI_SOFT_RESET failed for" 191 " drive %s:%d:%d: driver failed\n", 192 chp->wdc->sc_dev.dv_xname, chp->channel, drive); 193 panic("wdc_atapi_get_params"); 194 } 195 if (wdc_c.flags & (AT_ERROR | AT_TIMEOU | AT_DF)) { 196 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_SOFT_RESET " 197 "failed for drive %s:%d:%d: error 0x%x\n", 198 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 199 wdc_c.r_error), DEBUG_PROBE); 200 return -1; 201 } 202 chp->ch_drive[drive].state = 0; 203 204 bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_status); 205 206 /* Some ATAPI devices need a bit more time after software reset. */ 207 delay(5000); 208 if (ata_get_params(&chp->ch_drive[drive], AT_POLL, id) != 0) { 209 WDCDEBUG_PRINT(("wdc_atapi_get_params: ATAPI_IDENTIFY_DEVICE " 210 "failed for drive %s:%d:%d: error 0x%x\n", 211 chp->wdc->sc_dev.dv_xname, chp->channel, drive, 212 wdc_c.r_error), DEBUG_PROBE); 213 return -1; 214 } 215 return COMPLETE; 216 } 217 218 int 219 wdc_atapi_send_cmd(sc_xfer) 220 struct scsipi_xfer *sc_xfer; 221 { 222 struct wdc_softc *wdc = (void*)sc_xfer->sc_link->adapter_softc; 223 struct wdc_xfer *xfer; 224 int flags = sc_xfer->xs_control; 225 int channel = sc_xfer->sc_link->scsipi_atapi.channel; 226 int drive = sc_xfer->sc_link->scsipi_atapi.drive; 227 int s, ret; 228 229 WDCDEBUG_PRINT(("wdc_atapi_send_cmd %s:%d:%d\n", 230 wdc->sc_dev.dv_xname, channel, drive), DEBUG_XFERS); 231 232 xfer = wdc_get_xfer((flags & XS_CTL_NOSLEEP) ? 233 WDC_NOSLEEP : WDC_CANSLEEP); 234 if (xfer == NULL) { 235 return TRY_AGAIN_LATER; 236 } 237 if (sc_xfer->xs_control & XS_CTL_POLL) 238 xfer->c_flags |= C_POLL; 239 xfer->drive = drive; 240 xfer->c_flags |= C_ATAPI; 241 xfer->cmd = sc_xfer; 242 xfer->databuf = sc_xfer->data; 243 xfer->c_bcount = sc_xfer->datalen; 244 xfer->c_start = wdc_atapi_start; 245 xfer->c_intr = wdc_atapi_intr; 246 xfer->c_kill_xfer = wdc_atapi_kill_xfer; 247 s = splbio(); 248 wdc_exec_xfer(wdc->channels[channel], xfer); 249 #ifdef DIAGNOSTIC 250 if ((sc_xfer->xs_control & XS_CTL_POLL) != 0 && 251 (sc_xfer->xs_status & XS_STS_DONE) == 0) 252 panic("wdc_atapi_send_cmd: polled command not done"); 253 #endif 254 ret = (sc_xfer->xs_status & XS_STS_DONE) ? 255 COMPLETE : SUCCESSFULLY_QUEUED; 256 splx(s); 257 return ret; 258 } 259 260 void 261 wdc_atapi_start(chp, xfer) 262 struct channel_softc *chp; 263 struct wdc_xfer *xfer; 264 { 265 struct scsipi_xfer *sc_xfer = xfer->cmd; 266 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 267 268 WDCDEBUG_PRINT(("wdc_atapi_start %s:%d:%d, scsi flags 0x%x \n", 269 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, 270 sc_xfer->xs_control), DEBUG_XFERS); 271 /* Adjust C_DMA, it may have changed if we are requesting sense */ 272 if ((drvp->drive_flags & (DRIVE_DMA | DRIVE_UDMA)) && 273 (sc_xfer->datalen > 0 || (xfer->c_flags & C_SENSE))) { 274 if (drvp->n_xfers <= NXFER) 275 drvp->n_xfers++; 276 xfer->c_flags |= C_DMA; 277 } else { 278 xfer->c_flags &= ~C_DMA; 279 } 280 /* start timeout machinery */ 281 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) 282 timeout(wdctimeout, chp, sc_xfer->timeout * hz / 1000); 283 /* Do control operations specially. */ 284 if (drvp->state < READY) { 285 if (drvp->state != PIOMODE) { 286 printf("%s:%d:%d: bad state %d in wdc_atapi_start\n", 287 chp->wdc->sc_dev.dv_xname, chp->channel, 288 xfer->drive, drvp->state); 289 panic("wdc_atapi_start: bad state"); 290 } 291 wdc_atapi_ctrl(chp, xfer, 0); 292 return; 293 } 294 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 295 WDSD_IBM | (xfer->drive << 4)); 296 if (wait_for_unbusy(chp, ATAPI_DELAY) < 0) { 297 printf("wdc_atapi_start: not ready, st = %02x\n", 298 chp->ch_status); 299 sc_xfer->error = XS_TIMEOUT; 300 wdc_atapi_reset(chp, xfer); 301 return; 302 } 303 304 /* 305 * Even with WDCS_ERR, the device should accept a command packet 306 * Limit length to what can be stuffed into the cylinder register 307 * (16 bits). Some CD-ROMs seem to interpret '0' as 65536, 308 * but not all devices do that and it's not obvious from the 309 * ATAPI spec that that behaviour should be expected. If more 310 * data is necessary, multiple data transfer phases will be done. 311 */ 312 313 wdccommand(chp, xfer->drive, ATAPI_PKT_CMD, 314 xfer->c_bcount <= 0xffff ? xfer->c_bcount : 0xffff, 315 0, 0, 0, 316 (xfer->c_flags & C_DMA) ? ATAPI_PKT_CMD_FTRE_DMA : 0); 317 318 /* 319 * If there is no interrupt for CMD input, busy-wait for it (done in 320 * the interrupt routine. If it is a polled command, call the interrupt 321 * routine until command is done. 322 */ 323 if ((sc_xfer->sc_link->scsipi_atapi.cap & ATAPI_CFG_DRQ_MASK) != 324 ATAPI_CFG_IRQ_DRQ || (sc_xfer->xs_control & XS_CTL_POLL)) { 325 /* Wait for at last 400ns for status bit to be valid */ 326 DELAY(1); 327 wdc_atapi_intr(chp, xfer, 0); 328 } else { 329 chp->ch_flags |= WDCF_IRQ_WAIT; 330 } 331 if (sc_xfer->xs_control & XS_CTL_POLL) { 332 while ((sc_xfer->xs_status & XS_STS_DONE) == 0) { 333 /* Wait for at last 400ns for status bit to be valid */ 334 DELAY(1); 335 wdc_atapi_intr(chp, xfer, 0); 336 } 337 } 338 } 339 340 int 341 wdc_atapi_intr(chp, xfer, irq) 342 struct channel_softc *chp; 343 struct wdc_xfer *xfer; 344 int irq; 345 { 346 struct scsipi_xfer *sc_xfer = xfer->cmd; 347 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 348 int len, phase, i, retries=0; 349 int ire, dma_err = 0; 350 int dma_flags = 0; 351 struct scsipi_generic _cmd_reqsense; 352 struct scsipi_sense *cmd_reqsense = 353 (struct scsipi_sense *)&_cmd_reqsense; 354 void *cmd; 355 356 WDCDEBUG_PRINT(("wdc_atapi_intr %s:%d:%d\n", 357 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive), DEBUG_INTR); 358 359 /* Is it not a transfer, but a control operation? */ 360 if (drvp->state < READY) { 361 printf("%s:%d:%d: bad state %d in wdc_atapi_intr\n", 362 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 363 drvp->state); 364 panic("wdc_atapi_intr: bad state\n"); 365 } 366 /* 367 * If we missed an interrupt in a PIO transfer, reset and restart. 368 * Don't try to continue transfer, we may have missed cycles. 369 */ 370 if ((xfer->c_flags & (C_TIMEOU | C_DMA)) == C_TIMEOU) { 371 sc_xfer->error = XS_TIMEOUT; 372 wdc_atapi_reset(chp, xfer); 373 return 1; 374 } 375 376 /* Ack interrupt done in wait_for_unbusy */ 377 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 378 WDSD_IBM | (xfer->drive << 4)); 379 if (wait_for_unbusy(chp, 380 (irq == 0) ? sc_xfer->timeout : 0) != 0) { 381 if (irq && (xfer->c_flags & C_TIMEOU) == 0) 382 return 0; /* IRQ was not for us */ 383 printf("%s:%d:%d: device timeout, c_bcount=%d, c_skip=%d\n", 384 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 385 xfer->c_bcount, xfer->c_skip); 386 if (xfer->c_flags & C_DMA) 387 ata_dmaerr(drvp); 388 sc_xfer->error = XS_TIMEOUT; 389 wdc_atapi_reset(chp, xfer); 390 return 1; 391 } 392 /* If we missed an IRQ and were using DMA, flag it as a DMA error */ 393 if ((xfer->c_flags & C_TIMEOU) && (xfer->c_flags & C_DMA)) 394 ata_dmaerr(drvp); 395 /* 396 * if the request sense command was aborted, report the short sense 397 * previously recorded, else continue normal processing 398 */ 399 400 if ((xfer->c_flags & C_SENSE) != 0 && 401 (chp->ch_status & WDCS_ERR) != 0 && 402 (chp->ch_error & WDCE_ABRT) != 0) { 403 WDCDEBUG_PRINT(("wdc_atapi_intr: request_sense aborted, " 404 "calling wdc_atapi_done(), sense 0x%x\n", 405 sc_xfer->sense.atapi_sense), DEBUG_INTR); 406 wdc_atapi_done(chp, xfer); 407 return 1; 408 } 409 410 if (xfer->c_flags & C_DMA) { 411 dma_flags = ((sc_xfer->xs_control & XS_CTL_DATA_IN) || 412 (xfer->c_flags & C_SENSE)) ? WDC_DMA_READ : 0; 413 dma_flags |= sc_xfer->xs_control & XS_CTL_POLL ? 414 WDC_DMA_POLL : 0; 415 } 416 again: 417 len = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_lo) + 418 256 * bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_cyl_hi); 419 ire = bus_space_read_1(chp->cmd_iot, chp->cmd_ioh, wd_ireason); 420 phase = (ire & (WDCI_CMD | WDCI_IN)) | (chp->ch_status & WDCS_DRQ); 421 WDCDEBUG_PRINT(("wdc_atapi_intr: c_bcount %d len %d st 0x%x err 0x%x " 422 "ire 0x%x :", xfer->c_bcount, 423 len, chp->ch_status, chp->ch_error, ire), DEBUG_INTR); 424 425 switch (phase) { 426 case PHASE_CMDOUT: 427 if (xfer->c_flags & C_SENSE) { 428 memset(cmd_reqsense, 0, sizeof(struct scsipi_generic)); 429 cmd_reqsense->opcode = REQUEST_SENSE; 430 cmd_reqsense->length = xfer->c_bcount; 431 cmd = cmd_reqsense; 432 } else { 433 cmd = sc_xfer->cmd; 434 } 435 WDCDEBUG_PRINT(("PHASE_CMDOUT\n"), DEBUG_INTR); 436 /* Init the DMA channel if necessary */ 437 if (xfer->c_flags & C_DMA) { 438 if ((*chp->wdc->dma_init)(chp->wdc->dma_arg, 439 chp->channel, xfer->drive, 440 xfer->databuf, xfer->c_bcount, dma_flags) != 0) { 441 sc_xfer->error = XS_DRIVER_STUFFUP; 442 break; 443 } 444 } 445 /* send packet command */ 446 /* Commands are 12 or 16 bytes long. It's 32-bit aligned */ 447 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 448 if (drvp->drive_flags & DRIVE_CAP32) { 449 bus_space_write_multi_4(chp->data32iot, 450 chp->data32ioh, 0, 451 (u_int32_t *)cmd, 452 sc_xfer->cmdlen >> 2); 453 } else { 454 bus_space_write_multi_2(chp->cmd_iot, 455 chp->cmd_ioh, wd_data, 456 (u_int16_t *)cmd, 457 sc_xfer->cmdlen >> 1); 458 } 459 } else { 460 if (drvp->drive_flags & DRIVE_CAP32) { 461 bus_space_write_multi_stream_4(chp->data32iot, 462 chp->data32ioh, 0, 463 (u_int32_t *)cmd, 464 sc_xfer->cmdlen >> 2); 465 } else { 466 bus_space_write_multi_stream_2(chp->cmd_iot, 467 chp->cmd_ioh, wd_data, 468 (u_int16_t *)cmd, 469 sc_xfer->cmdlen >> 1); 470 } 471 } 472 /* Start the DMA channel if necessary */ 473 if (xfer->c_flags & C_DMA) { 474 (*chp->wdc->dma_start)(chp->wdc->dma_arg, 475 chp->channel, xfer->drive, dma_flags); 476 } 477 478 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 479 chp->ch_flags |= WDCF_IRQ_WAIT; 480 } 481 return 1; 482 483 case PHASE_DATAOUT: 484 /* write data */ 485 WDCDEBUG_PRINT(("PHASE_DATAOUT\n"), DEBUG_INTR); 486 if ((sc_xfer->xs_control & XS_CTL_DATA_OUT) == 0 || 487 (xfer->c_flags & C_DMA) != 0) { 488 printf("wdc_atapi_intr: bad data phase DATAOUT\n"); 489 if (xfer->c_flags & C_DMA) { 490 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 491 chp->channel, xfer->drive, dma_flags); 492 ata_dmaerr(drvp); 493 } 494 sc_xfer->error = XS_TIMEOUT; 495 wdc_atapi_reset(chp, xfer); 496 return 1; 497 } 498 if (xfer->c_bcount < len) { 499 printf("wdc_atapi_intr: warning: write only " 500 "%d of %d requested bytes\n", xfer->c_bcount, len); 501 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 502 bus_space_write_multi_2(chp->cmd_iot, 503 chp->cmd_ioh, wd_data, 504 (u_int16_t *)((char *)xfer->databuf + 505 xfer->c_skip), 506 xfer->c_bcount >> 1); 507 } else { 508 bus_space_write_multi_stream_2(chp->cmd_iot, 509 chp->cmd_ioh, wd_data, 510 (u_int16_t *)((char *)xfer->databuf + 511 xfer->c_skip), 512 xfer->c_bcount >> 1); 513 } 514 for (i = xfer->c_bcount; i < len; i += 2) 515 bus_space_write_2(chp->cmd_iot, chp->cmd_ioh, 516 wd_data, 0); 517 xfer->c_skip += xfer->c_bcount; 518 xfer->c_bcount = 0; 519 } else { 520 if (drvp->drive_flags & DRIVE_CAP32) { 521 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 522 bus_space_write_multi_4(chp->data32iot, 523 chp->data32ioh, 0, 524 (u_int32_t *)((char *)xfer->databuf + 525 xfer->c_skip), 526 len >> 2); 527 else 528 bus_space_write_multi_stream_4(chp->data32iot, 529 chp->data32ioh, wd_data, 530 (u_int32_t *)((char *)xfer->databuf + 531 xfer->c_skip), 532 len >> 2); 533 534 xfer->c_skip += len & 0xfffffffc; 535 xfer->c_bcount -= len & 0xfffffffc; 536 len = len & 0x03; 537 } 538 if (len > 0) { 539 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 540 bus_space_write_multi_2(chp->cmd_iot, 541 chp->cmd_ioh, wd_data, 542 (u_int16_t *)((char *)xfer->databuf + 543 xfer->c_skip), 544 len >> 1); 545 else 546 bus_space_write_multi_stream_2(chp->cmd_iot, 547 chp->cmd_ioh, wd_data, 548 (u_int16_t *)((char *)xfer->databuf + 549 xfer->c_skip), 550 len >> 1); 551 xfer->c_skip += len; 552 xfer->c_bcount -= len; 553 } 554 } 555 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 556 chp->ch_flags |= WDCF_IRQ_WAIT; 557 } 558 return 1; 559 560 case PHASE_DATAIN: 561 /* Read data */ 562 WDCDEBUG_PRINT(("PHASE_DATAIN\n"), DEBUG_INTR); 563 if (((sc_xfer->xs_control & XS_CTL_DATA_IN) == 0 && 564 (xfer->c_flags & C_SENSE) == 0) || 565 (xfer->c_flags & C_DMA) != 0) { 566 printf("wdc_atapi_intr: bad data phase DATAIN\n"); 567 if (xfer->c_flags & C_DMA) { 568 (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 569 chp->channel, xfer->drive, dma_flags); 570 ata_dmaerr(drvp); 571 } 572 sc_xfer->error = XS_TIMEOUT; 573 wdc_atapi_reset(chp, xfer); 574 return 1; 575 } 576 if (xfer->c_bcount < len) { 577 printf("wdc_atapi_intr: warning: reading only " 578 "%d of %d bytes\n", xfer->c_bcount, len); 579 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) { 580 bus_space_read_multi_2(chp->cmd_iot, 581 chp->cmd_ioh, wd_data, 582 (u_int16_t *)((char *)xfer->databuf + 583 xfer->c_skip), 584 xfer->c_bcount >> 1); 585 } else { 586 bus_space_read_multi_stream_2(chp->cmd_iot, 587 chp->cmd_ioh, wd_data, 588 (u_int16_t *)((char *)xfer->databuf + 589 xfer->c_skip), 590 xfer->c_bcount >> 1); 591 } 592 wdcbit_bucket(chp, len - xfer->c_bcount); 593 xfer->c_skip += xfer->c_bcount; 594 xfer->c_bcount = 0; 595 } else { 596 if (drvp->drive_flags & DRIVE_CAP32) { 597 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 598 bus_space_read_multi_4(chp->data32iot, 599 chp->data32ioh, 0, 600 (u_int32_t *)((char *)xfer->databuf + 601 xfer->c_skip), 602 len >> 2); 603 else 604 bus_space_read_multi_stream_4(chp->data32iot, 605 chp->data32ioh, wd_data, 606 (u_int32_t *)((char *)xfer->databuf + 607 xfer->c_skip), 608 len >> 2); 609 610 xfer->c_skip += len & 0xfffffffc; 611 xfer->c_bcount -= len & 0xfffffffc; 612 len = len & 0x03; 613 } 614 if (len > 0) { 615 if ((chp->wdc->cap & WDC_CAPABILITY_ATAPI_NOSTREAM)) 616 bus_space_read_multi_2(chp->cmd_iot, 617 chp->cmd_ioh, wd_data, 618 (u_int16_t *)((char *)xfer->databuf + 619 xfer->c_skip), 620 len >> 1); 621 else 622 bus_space_read_multi_stream_2(chp->cmd_iot, 623 chp->cmd_ioh, wd_data, 624 (u_int16_t *)((char *)xfer->databuf + 625 xfer->c_skip), 626 len >> 1); 627 xfer->c_skip += len; 628 xfer->c_bcount -=len; 629 } 630 } 631 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 632 chp->ch_flags |= WDCF_IRQ_WAIT; 633 } 634 return 1; 635 636 case PHASE_ABORTED: 637 case PHASE_COMPLETED: 638 WDCDEBUG_PRINT(("PHASE_COMPLETED\n"), DEBUG_INTR); 639 /* turn off DMA channel */ 640 if (xfer->c_flags & C_DMA) { 641 dma_err = (*chp->wdc->dma_finish)(chp->wdc->dma_arg, 642 chp->channel, xfer->drive, dma_flags); 643 if (xfer->c_flags & C_SENSE) 644 xfer->c_bcount -= 645 sizeof(sc_xfer->sense.scsi_sense); 646 else 647 xfer->c_bcount -= sc_xfer->datalen; 648 } 649 if (xfer->c_flags & C_SENSE) { 650 if ((chp->ch_status & WDCS_ERR) || dma_err < 0) { 651 /* 652 * request sense failed ! it's not suppossed 653 * to be possible 654 */ 655 if (xfer->c_flags & C_DMA) 656 ata_dmaerr(drvp); 657 sc_xfer->error = XS_RESET; 658 wdc_atapi_reset(chp, xfer); 659 return (1); 660 } else if (xfer->c_bcount < 661 sizeof(sc_xfer->sense.scsi_sense)) { 662 /* use the sense we just read */ 663 sc_xfer->error = XS_SENSE; 664 } else { 665 /* 666 * command completed, but no data was read. 667 * use the short sense we saved previsouly. 668 */ 669 sc_xfer->error = XS_SHORTSENSE; 670 } 671 } else { 672 sc_xfer->resid = xfer->c_bcount; 673 if (chp->ch_status & WDCS_ERR) { 674 /* save the short sense */ 675 sc_xfer->error = XS_SHORTSENSE; 676 sc_xfer->sense.atapi_sense = chp->ch_error; 677 if ((sc_xfer->sc_link->quirks & 678 ADEV_NOSENSE) == 0) { 679 /* 680 * let the driver issue a 681 * 'request sense' 682 */ 683 xfer->databuf = &sc_xfer->sense; 684 xfer->c_bcount = 685 sizeof(sc_xfer->sense.scsi_sense); 686 xfer->c_skip = 0; 687 xfer->c_flags |= C_SENSE; 688 untimeout(wdctimeout, chp); 689 wdc_atapi_start(chp, xfer); 690 return 1; 691 } 692 } else if (dma_err < 0) { 693 ata_dmaerr(drvp); 694 sc_xfer->error = XS_RESET; 695 wdc_atapi_reset(chp, xfer); 696 return (1); 697 } 698 } 699 if (xfer->c_bcount != 0) { 700 WDCDEBUG_PRINT(("wdc_atapi_intr: bcount value is " 701 "%d after io\n", xfer->c_bcount), DEBUG_XFERS); 702 } 703 #ifdef DIAGNOSTIC 704 if (xfer->c_bcount < 0) { 705 printf("wdc_atapi_intr warning: bcount value " 706 "is %d after io\n", xfer->c_bcount); 707 } 708 #endif 709 break; 710 711 default: 712 if (++retries<500) { 713 DELAY(100); 714 chp->ch_status = bus_space_read_1(chp->cmd_iot, 715 chp->cmd_ioh, wd_status); 716 chp->ch_error = bus_space_read_1(chp->cmd_iot, 717 chp->cmd_ioh, wd_error); 718 goto again; 719 } 720 printf("wdc_atapi_intr: unknown phase 0x%x\n", phase); 721 if (chp->ch_status & WDCS_ERR) { 722 sc_xfer->error = XS_SHORTSENSE; 723 sc_xfer->sense.atapi_sense = chp->ch_error; 724 } else { 725 if (xfer->c_flags & C_DMA) 726 ata_dmaerr(drvp); 727 sc_xfer->error = XS_RESET; 728 wdc_atapi_reset(chp, xfer); 729 return (1); 730 } 731 } 732 WDCDEBUG_PRINT(("wdc_atapi_intr: wdc_atapi_done() (end), error 0x%x " 733 "sense 0x%x\n", sc_xfer->error, sc_xfer->sense.atapi_sense), 734 DEBUG_INTR); 735 wdc_atapi_done(chp, xfer); 736 return (1); 737 } 738 739 int 740 wdc_atapi_ctrl(chp, xfer, irq) 741 struct channel_softc *chp; 742 struct wdc_xfer *xfer; 743 int irq; 744 { 745 struct scsipi_xfer *sc_xfer = xfer->cmd; 746 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 747 char *errstring = NULL; 748 int delay = (irq == 0) ? ATAPI_DELAY : 0; 749 750 /* Ack interrupt done in wait_for_unbusy */ 751 again: 752 WDCDEBUG_PRINT(("wdc_atapi_ctrl %s:%d:%d state %d\n", 753 chp->wdc->sc_dev.dv_xname, chp->channel, drvp->drive, drvp->state), 754 DEBUG_INTR | DEBUG_FUNCS); 755 bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh, 756 WDSD_IBM | (xfer->drive << 4)); 757 switch (drvp->state) { 758 case PIOMODE: 759 piomode: 760 /* Don't try to set mode if controller can't be adjusted */ 761 if ((chp->wdc->cap & WDC_CAPABILITY_MODE) == 0) 762 goto ready; 763 /* Also don't try if the drive didn't report its mode */ 764 if ((drvp->drive_flags & DRIVE_MODE) == 0) 765 goto ready;; 766 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 767 0x08 | drvp->PIO_mode, WDSF_SET_MODE); 768 drvp->state = PIOMODE_WAIT; 769 break; 770 case PIOMODE_WAIT: 771 errstring = "piomode"; 772 if (wait_for_unbusy(chp, delay)) 773 goto timeout; 774 if (chp->ch_status & WDCS_ERR) { 775 if (drvp->PIO_mode < 3) { 776 drvp->PIO_mode = 3; 777 goto piomode; 778 } else { 779 goto error; 780 } 781 } 782 /* fall through */ 783 784 case DMAMODE: 785 if (drvp->drive_flags & DRIVE_UDMA) { 786 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 787 0x40 | drvp->UDMA_mode, WDSF_SET_MODE); 788 } else if (drvp->drive_flags & DRIVE_DMA) { 789 wdccommand(chp, drvp->drive, SET_FEATURES, 0, 0, 0, 790 0x20 | drvp->DMA_mode, WDSF_SET_MODE); 791 } else { 792 goto ready; 793 } 794 drvp->state = DMAMODE_WAIT; 795 break; 796 case DMAMODE_WAIT: 797 errstring = "dmamode"; 798 if (wait_for_unbusy(chp, delay)) 799 goto timeout; 800 if (chp->ch_status & WDCS_ERR) 801 goto error; 802 /* fall through */ 803 804 case READY: 805 ready: 806 drvp->state = READY; 807 xfer->c_intr = wdc_atapi_intr; 808 untimeout(wdctimeout, chp); 809 wdc_atapi_start(chp, xfer); 810 return 1; 811 } 812 if ((sc_xfer->xs_control & XS_CTL_POLL) == 0) { 813 chp->ch_flags |= WDCF_IRQ_WAIT; 814 xfer->c_intr = wdc_atapi_ctrl; 815 } else { 816 goto again; 817 } 818 return 1; 819 820 timeout: 821 if (irq && (xfer->c_flags & C_TIMEOU) == 0) { 822 return 0; /* IRQ was not for us */ 823 } 824 printf("%s:%d:%d: %s timed out\n", 825 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, errstring); 826 sc_xfer->error = XS_TIMEOUT; 827 wdc_atapi_reset(chp, xfer); 828 return 1; 829 error: 830 printf("%s:%d:%d: %s ", 831 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 832 errstring); 833 printf("error (0x%x)\n", chp->ch_error); 834 sc_xfer->error = XS_SHORTSENSE; 835 sc_xfer->sense.atapi_sense = chp->ch_error; 836 wdc_atapi_reset(chp, xfer); 837 return 1; 838 } 839 840 void 841 wdc_atapi_done(chp, xfer) 842 struct channel_softc *chp; 843 struct wdc_xfer *xfer; 844 { 845 struct scsipi_xfer *sc_xfer = xfer->cmd; 846 847 WDCDEBUG_PRINT(("wdc_atapi_done %s:%d:%d: flags 0x%x\n", 848 chp->wdc->sc_dev.dv_xname, chp->channel, xfer->drive, 849 (u_int)xfer->c_flags), DEBUG_XFERS); 850 untimeout(wdctimeout, chp); 851 /* remove this command from xfer queue */ 852 wdc_free_xfer(chp, xfer); 853 sc_xfer->xs_status |= XS_STS_DONE; 854 855 WDCDEBUG_PRINT(("wdc_atapi_done: scsipi_done\n"), DEBUG_XFERS); 856 scsipi_done(sc_xfer); 857 WDCDEBUG_PRINT(("wdcstart from wdc_atapi_done, flags 0x%x\n", 858 chp->ch_flags), DEBUG_XFERS); 859 wdcstart(chp); 860 } 861 862 void 863 wdc_atapi_reset(chp, xfer) 864 struct channel_softc *chp; 865 struct wdc_xfer *xfer; 866 { 867 struct ata_drive_datas *drvp = &chp->ch_drive[xfer->drive]; 868 struct scsipi_xfer *sc_xfer = xfer->cmd; 869 870 wdccommandshort(chp, xfer->drive, ATAPI_SOFT_RESET); 871 drvp->state = 0; 872 if (wait_for_unbusy(chp, WDC_RESET_WAIT) != 0) { 873 printf("%s:%d:%d: reset failed\n", 874 chp->wdc->sc_dev.dv_xname, chp->channel, 875 xfer->drive); 876 sc_xfer->error = XS_SELTIMEOUT; 877 } 878 wdc_atapi_done(chp, xfer); 879 return; 880 } 881
Indexes created Tue Sep 23 23:09:58 GMT 2025