spifi.c revision 1.9
1 /* $NetBSD: spifi.c,v 1.9 2002/10/02 04:27:51 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000 Tsubai Masanari. All rights reserved. 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. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/buf.h> 31 #include <sys/device.h> 32 #include <sys/errno.h> 33 #include <sys/kernel.h> 34 #include <sys/queue.h> 35 #include <sys/systm.h> 36 37 #include <uvm/uvm_extern.h> 38 39 #include <dev/scsipi/scsi_all.h> 40 #include <dev/scsipi/scsi_message.h> 41 #include <dev/scsipi/scsipi_all.h> 42 #include <dev/scsipi/scsiconf.h> 43 44 #include <newsmips/apbus/apbusvar.h> 45 #include <newsmips/apbus/spifireg.h> 46 #include <newsmips/apbus/dmac3reg.h> 47 48 #include <machine/adrsmap.h> 49 50 /* #define SPIFI_DEBUG */ 51 52 #ifdef SPIFI_DEBUG 53 # define DPRINTF printf 54 #else 55 # define DPRINTF while (0) printf 56 #endif 57 58 struct spifi_scb { 59 TAILQ_ENTRY(spifi_scb) chain; 60 int flags; 61 struct scsipi_xfer *xs; 62 struct scsi_generic cmd; 63 int cmdlen; 64 int resid; 65 vaddr_t daddr; 66 u_char target; 67 u_char lun; 68 u_char lun_targ; 69 u_char status; 70 }; 71 /* scb flags */ 72 #define SPIFI_READ 0x80 73 #define SPIFI_DMA 0x01 74 75 struct spifi_softc { 76 struct device sc_dev; 77 struct scsipi_channel sc_channel; 78 struct scsipi_adapter sc_adapter; 79 80 struct spifi_reg *sc_reg; 81 struct spifi_scb *sc_nexus; 82 void *sc_dma; /* attached DMA softc */ 83 int sc_id; /* my SCSI ID */ 84 int sc_msgout; 85 u_char sc_omsg[16]; 86 struct spifi_scb sc_scb[16]; 87 TAILQ_HEAD(, spifi_scb) free_scb; 88 TAILQ_HEAD(, spifi_scb) ready_scb; 89 }; 90 91 #define SPIFI_SYNC_OFFSET_MAX 7 92 93 #define SEND_REJECT 1 94 #define SEND_IDENTIFY 2 95 #define SEND_SDTR 4 96 97 #define SPIFI_DATAOUT 0 98 #define SPIFI_DATAIN PRS_IO 99 #define SPIFI_COMMAND PRS_CD 100 #define SPIFI_STATUS (PRS_CD | PRS_IO) 101 #define SPIFI_MSGOUT (PRS_MSG | PRS_CD) 102 #define SPIFI_MSGIN (PRS_MSG | PRS_CD | PRS_IO) 103 104 int spifi_match(struct device *, struct cfdata *, void *); 105 void spifi_attach(struct device *, struct device *, void *); 106 107 void spifi_scsipi_request(struct scsipi_channel *, scsipi_adapter_req_t, void *); 108 struct spifi_scb *spifi_get_scb(struct spifi_softc *); 109 void spifi_free_scb(struct spifi_softc *, struct spifi_scb *); 110 int spifi_poll(struct spifi_softc *); 111 void spifi_minphys(struct buf *); 112 113 void spifi_sched(struct spifi_softc *); 114 int spifi_intr(void *); 115 void spifi_pmatch(struct spifi_softc *); 116 117 void spifi_select(struct spifi_softc *); 118 void spifi_sendmsg(struct spifi_softc *, int); 119 void spifi_command(struct spifi_softc *); 120 void spifi_data_io(struct spifi_softc *); 121 void spifi_status(struct spifi_softc *); 122 int spifi_done(struct spifi_softc *); 123 void spifi_fifo_drain(struct spifi_softc *); 124 void spifi_reset(struct spifi_softc *); 125 void spifi_bus_reset(struct spifi_softc *); 126 127 static int spifi_read_count(struct spifi_reg *); 128 static void spifi_write_count(struct spifi_reg *, int); 129 130 #define DMAC3_FASTACCESS(sc) dmac3_misc((sc)->sc_dma, DMAC3_CONF_FASTACCESS) 131 #define DMAC3_SLOWACCESS(sc) dmac3_misc((sc)->sc_dma, DMAC3_CONF_SLOWACCESS) 132 133 CFATTACH_DECL(spifi, sizeof(struct spifi_softc), 134 spifi_match, spifi_attach, NULL, NULL); 135 136 int 137 spifi_match(parent, cf, aux) 138 struct device *parent; 139 struct cfdata *cf; 140 void *aux; 141 { 142 struct apbus_attach_args *apa = aux; 143 144 if (strcmp(apa->apa_name, "spifi") == 0) 145 return 1; 146 147 return 0; 148 } 149 150 void 151 spifi_attach(parent, self, aux) 152 struct device *parent, *self; 153 void *aux; 154 { 155 struct spifi_softc *sc = (void *)self; 156 struct apbus_attach_args *apa = aux; 157 struct device *dma; 158 int intr, i; 159 160 /* Initialize scbs. */ 161 TAILQ_INIT(&sc->free_scb); 162 TAILQ_INIT(&sc->ready_scb); 163 for (i = 0; i < sizeof(sc->sc_scb)/sizeof(sc->sc_scb[0]); i++) 164 TAILQ_INSERT_TAIL(&sc->free_scb, &sc->sc_scb[i], chain); 165 166 sc->sc_reg = (struct spifi_reg *)apa->apa_hwbase; 167 sc->sc_id = 7; /* XXX */ 168 169 /* Find my dmac3. */ 170 dma = dmac3_link(apa->apa_ctlnum); 171 if (dma == NULL) { 172 printf(": cannot find slave dmac\n"); 173 return; 174 } 175 sc->sc_dma = dma; 176 177 printf(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase); 178 printf(": SCSI ID = %d, using %s\n", sc->sc_id, dma->dv_xname); 179 180 dmac3_reset(sc->sc_dma); 181 182 DMAC3_SLOWACCESS(sc); 183 spifi_reset(sc); 184 DMAC3_FASTACCESS(sc); 185 186 sc->sc_adapter.adapt_dev = &sc->sc_dev; 187 sc->sc_adapter.adapt_nchannels = 1; 188 sc->sc_adapter.adapt_openings = 7; 189 sc->sc_adapter.adapt_max_periph = 1; 190 sc->sc_adapter.adapt_ioctl = NULL; 191 sc->sc_adapter.adapt_minphys = minphys; 192 sc->sc_adapter.adapt_request = spifi_scsipi_request; 193 194 memset(&sc->sc_channel, 0, sizeof(sc->sc_channel)); 195 sc->sc_channel.chan_adapter = &sc->sc_adapter; 196 sc->sc_channel.chan_bustype = &scsi_bustype; 197 sc->sc_channel.chan_channel = 0; 198 sc->sc_channel.chan_ntargets = 8; 199 sc->sc_channel.chan_nluns = 8; 200 sc->sc_channel.chan_id = sc->sc_id; 201 202 if (apa->apa_slotno == 0) 203 intr = NEWS5000_INT0_DMAC; 204 else 205 intr = SLOTTOMASK(apa->apa_slotno); 206 apbus_intr_establish(0, intr, 0, spifi_intr, sc, apa->apa_name, 207 apa->apa_ctlnum); 208 209 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 210 } 211 212 void 213 spifi_scsipi_request(chan, req, arg) 214 struct scsipi_channel *chan; 215 scsipi_adapter_req_t req; 216 void *arg; 217 { 218 struct scsipi_xfer *xs; 219 struct scsipi_periph *periph; 220 struct spifi_softc *sc = (void *)chan->chan_adapter->adapt_dev; 221 struct spifi_scb *scb; 222 u_int flags; 223 int s; 224 225 switch (req) { 226 case ADAPTER_REQ_RUN_XFER: 227 xs = arg; 228 periph = xs->xs_periph; 229 230 DPRINTF("spifi_scsi_cmd\n"); 231 232 flags = xs->xs_control; 233 234 scb = spifi_get_scb(sc); 235 if (scb == NULL) { 236 panic("spifi_scsipi_request: no scb"); 237 } 238 239 scb->xs = xs; 240 scb->flags = 0; 241 scb->status = 0; 242 scb->daddr = (vaddr_t)xs->data; 243 scb->resid = xs->datalen; 244 bcopy(xs->cmd, &scb->cmd, xs->cmdlen); 245 scb->cmdlen = xs->cmdlen; 246 247 scb->target = periph->periph_target; 248 scb->lun = periph->periph_lun; 249 scb->lun_targ = scb->target | (scb->lun << 3); 250 251 if (flags & XS_CTL_DATA_IN) 252 scb->flags |= SPIFI_READ; 253 254 s = splbio(); 255 256 TAILQ_INSERT_TAIL(&sc->ready_scb, scb, chain); 257 258 if (sc->sc_nexus == NULL) /* IDLE */ 259 spifi_sched(sc); 260 261 splx(s); 262 263 if (flags & XS_CTL_POLL) { 264 if (spifi_poll(sc)) { 265 printf("spifi: timeout\n"); 266 if (spifi_poll(sc)) 267 printf("spifi: timeout again\n"); 268 } 269 } 270 return; 271 case ADAPTER_REQ_GROW_RESOURCES: 272 /* XXX Not supported. */ 273 return; 274 case ADAPTER_REQ_SET_XFER_MODE: 275 /* XXX Not supported. */ 276 return; 277 } 278 } 279 280 struct spifi_scb * 281 spifi_get_scb(sc) 282 struct spifi_softc *sc; 283 { 284 struct spifi_scb *scb; 285 int s; 286 287 s = splbio(); 288 scb = sc->free_scb.tqh_first; 289 if (scb) 290 TAILQ_REMOVE(&sc->free_scb, scb, chain); 291 splx(s); 292 293 return scb; 294 } 295 296 void 297 spifi_free_scb(sc, scb) 298 struct spifi_softc *sc; 299 struct spifi_scb *scb; 300 { 301 int s; 302 303 s = splbio(); 304 TAILQ_INSERT_HEAD(&sc->free_scb, scb, chain); 305 splx(s); 306 } 307 308 int 309 spifi_poll(sc) 310 struct spifi_softc *sc; 311 { 312 struct spifi_scb *scb = sc->sc_nexus; 313 struct scsipi_xfer *xs; 314 int count; 315 316 printf("spifi_poll: not implemented yet\n"); 317 delay(10000); 318 scb->status = SCSI_OK; 319 scb->resid = 0; 320 spifi_done(sc); 321 return 0; 322 323 if (xs == NULL) 324 return 0; 325 326 xs = scb->xs; 327 count = xs->timeout; 328 329 while (count > 0) { 330 if (dmac3_intr(sc->sc_dma) != 0) 331 spifi_intr(sc); 332 333 if (xs->xs_status & XS_STS_DONE) 334 return 0; 335 DELAY(1000); 336 count--; 337 }; 338 return 1; 339 } 340 341 void 342 spifi_minphys(bp) 343 struct buf *bp; 344 { 345 if (bp->b_bcount > 64*1024) 346 bp->b_bcount = 64*1024; 347 348 minphys(bp); 349 } 350 351 void 352 spifi_sched(sc) 353 struct spifi_softc *sc; 354 { 355 struct spifi_scb *scb; 356 357 scb = sc->ready_scb.tqh_first; 358 start: 359 if (scb == NULL || sc->sc_nexus != NULL) 360 return; 361 /* 362 if (sc->sc_targets[scb->target] & (1 << scb->lun)) 363 goto next; 364 */ 365 TAILQ_REMOVE(&sc->ready_scb, scb, chain); 366 367 #ifdef SPIFI_DEBUG 368 { 369 int i; 370 371 printf("spifi_sched: ID:LUN = %d:%d, ", scb->target, scb->lun); 372 printf("cmd = 0x%x", scb->cmd.opcode); 373 for (i = 0; i < 5; i++) 374 printf(" 0x%x", scb->cmd.bytes[i]); 375 printf("\n"); 376 } 377 #endif 378 379 DMAC3_SLOWACCESS(sc); 380 sc->sc_nexus = scb; 381 spifi_select(sc); 382 DMAC3_FASTACCESS(sc); 383 384 scb = scb->chain.tqe_next; 385 goto start; 386 } 387 388 static inline int 389 spifi_read_count(reg) 390 struct spifi_reg *reg; 391 { 392 int count; 393 394 count = (reg->count_hi & 0xff) << 16 | 395 (reg->count_mid & 0xff) << 8 | 396 (reg->count_low & 0xff); 397 return count; 398 } 399 400 static inline void 401 spifi_write_count(reg, count) 402 struct spifi_reg *reg; 403 int count; 404 { 405 reg->count_hi = count >> 16; 406 reg->count_mid = count >> 8; 407 reg->count_low = count; 408 } 409 410 411 #ifdef SPIFI_DEBUG 412 static char scsi_phase_name[][8] = { 413 "DATAOUT", "DATAIN", "COMMAND", "STATUS", 414 "", "", "MSGOUT", "MSGIN" 415 }; 416 #endif 417 418 int 419 spifi_intr(v) 420 void *v; 421 { 422 struct spifi_softc *sc = v; 423 struct spifi_reg *reg = sc->sc_reg; 424 int intr, state, icond; 425 struct spifi_scb *scb; 426 struct scsipi_xfer *xs; 427 #ifdef SPIFI_DEBUG 428 char bitmask[64]; 429 #endif 430 431 switch (dmac3_intr(sc->sc_dma)) { 432 case 0: 433 DPRINTF("spurious dma intr\n"); 434 return 0; 435 case -1: 436 printf("DMAC parity error, data PAD\n"); 437 438 DMAC3_SLOWACCESS(sc); 439 reg->prcmd = PRC_TRPAD; 440 DMAC3_FASTACCESS(sc); 441 return 1; 442 443 default: 444 break; 445 } 446 DMAC3_SLOWACCESS(sc); 447 448 intr = reg->intr & 0xff; 449 if (intr == 0) { 450 DMAC3_FASTACCESS(sc); 451 DPRINTF("spurious intr (not me)\n"); 452 return 0; 453 } 454 455 scb = sc->sc_nexus; 456 xs = scb->xs; 457 state = reg->spstat; 458 icond = reg->icond; 459 460 /* clear interrupt */ 461 reg->intr = ~intr; 462 463 #ifdef SPIFI_DEBUG 464 bitmask_snprintf(intr, INTR_BITMASK, bitmask, sizeof bitmask); 465 printf("spifi_intr intr = 0x%s (%s), ", bitmask, 466 scsi_phase_name[(reg->prstat >> 3) & 7]); 467 printf("state = 0x%x, icond = 0x%x\n", state, icond); 468 #endif 469 470 if (intr & INTR_FCOMP) { 471 spifi_fifo_drain(sc); 472 scb->status = reg->cmbuf[scb->target].status; 473 scb->resid = spifi_read_count(reg); 474 475 DPRINTF("datalen = %d, resid = %d, status = 0x%x\n", 476 xs->datalen, scb->resid, scb->status); 477 DPRINTF("msg = 0x%x\n", reg->cmbuf[sc->sc_id].cdb[0]); 478 479 DMAC3_FASTACCESS(sc); 480 spifi_done(sc); 481 return 1; 482 } 483 if (intr & INTR_DISCON) 484 panic("disconnect"); 485 486 if (intr & INTR_TIMEO) { 487 xs->error = XS_SELTIMEOUT; 488 DMAC3_FASTACCESS(sc); 489 spifi_done(sc); 490 return 1; 491 } 492 if (intr & INTR_BSRQ) { 493 if (scb == NULL) 494 panic("reconnect?"); 495 496 if (intr & INTR_PERR) { 497 printf("%s: %d:%d parity error\n", sc->sc_dev.dv_xname, 498 scb->target, scb->lun); 499 500 /* XXX reset */ 501 xs->error = XS_DRIVER_STUFFUP; 502 spifi_done(sc); 503 return 1; 504 } 505 506 if (state >> 4 == SPS_MSGIN && icond == ICOND_NXTREQ) 507 panic("spifi_intr: NXTREQ"); 508 if (reg->fifoctrl & FIFOC_RQOVRN) 509 panic("spifi_intr RQOVRN"); 510 if (icond == ICOND_UXPHASEZ) 511 panic("ICOND_UXPHASEZ"); 512 513 if ((icond & 0x0f) == ICOND_ADATAOFF) { 514 spifi_data_io(sc); 515 goto done; 516 } 517 if ((icond & 0xf0) == ICOND_UBF) { 518 reg->exstat = reg->exstat & ~EXS_UBF; 519 spifi_pmatch(sc); 520 goto done; 521 } 522 523 /* 524 * XXX Work around the SPIFI bug that interrupts during 525 * XXX dataout phase. 526 */ 527 if (state == ((SPS_DATAOUT << 4) | SPS_INTR) && 528 (reg->prstat & PRS_PHASE) == SPIFI_DATAOUT) { 529 reg->prcmd = PRC_DATAOUT; 530 goto done; 531 } 532 if ((reg->prstat & PRS_Z) == 0) { 533 spifi_pmatch(sc); 534 goto done; 535 } 536 537 panic("spifi_intr: unknown intr state"); 538 } 539 540 done: 541 DMAC3_FASTACCESS(sc); 542 return 1; 543 } 544 545 void 546 spifi_pmatch(sc) 547 struct spifi_softc *sc; 548 { 549 struct spifi_reg *reg = sc->sc_reg; 550 int phase; 551 552 phase = (reg->prstat & PRS_PHASE); 553 554 #ifdef SPIFI_DEBUG 555 printf("spifi_pmatch (%s)\n", scsi_phase_name[phase >> 3]); 556 #endif 557 558 switch (phase) { 559 560 case SPIFI_COMMAND: 561 spifi_command(sc); 562 break; 563 case SPIFI_DATAIN: 564 case SPIFI_DATAOUT: 565 spifi_data_io(sc); 566 break; 567 case SPIFI_STATUS: 568 spifi_status(sc); 569 break; 570 571 case SPIFI_MSGIN: /* XXX */ 572 case SPIFI_MSGOUT: /* XXX */ 573 default: 574 printf("spifi: unknown phase %d\n", phase); 575 } 576 } 577 578 void 579 spifi_select(sc) 580 struct spifi_softc *sc; 581 { 582 struct spifi_reg *reg = sc->sc_reg; 583 struct spifi_scb *scb = sc->sc_nexus; 584 int sel; 585 586 #if 0 587 if (reg->loopdata || reg->intr) 588 return; 589 #endif 590 591 if (scb == NULL) { 592 printf("%s: spifi_select: NULL nexus\n", sc->sc_dev.dv_xname); 593 return; 594 } 595 596 reg->exctrl = EXC_IPLOCK; 597 598 dmac3_reset(sc->sc_dma); 599 sel = scb->target << 4 | SEL_ISTART | SEL_IRESELEN | SEL_WATN; 600 spifi_sendmsg(sc, SEND_IDENTIFY); 601 reg->select = sel; 602 } 603 604 void 605 spifi_sendmsg(sc, msg) 606 struct spifi_softc *sc; 607 int msg; 608 { 609 struct spifi_scb *scb = sc->sc_nexus; 610 /* struct mesh_tinfo *ti; */ 611 int lun, len, i; 612 613 int id = sc->sc_id; 614 struct spifi_reg *reg = sc->sc_reg; 615 616 DPRINTF("spifi_sendmsg: sending"); 617 sc->sc_msgout = msg; 618 len = 0; 619 620 if (msg & SEND_REJECT) { 621 DPRINTF(" REJECT"); 622 sc->sc_omsg[len++] = MSG_MESSAGE_REJECT; 623 } 624 if (msg & SEND_IDENTIFY) { 625 DPRINTF(" IDENTIFY"); 626 lun = scb->xs->xs_periph->periph_lun; 627 sc->sc_omsg[len++] = MSG_IDENTIFY(lun, 0); 628 } 629 if (msg & SEND_SDTR) { 630 DPRINTF(" SDTR"); 631 #if 0 632 ti = &sc->sc_tinfo[scb->target]; 633 sc->sc_omsg[len++] = MSG_EXTENDED; 634 sc->sc_omsg[len++] = 3; 635 sc->sc_omsg[len++] = MSG_EXT_SDTR; 636 sc->sc_omsg[len++] = ti->period; 637 sc->sc_omsg[len++] = ti->offset; 638 #endif 639 } 640 DPRINTF("\n"); 641 642 reg->cmlen = CML_AMSG_EN | len; 643 for (i = 0; i < len; i++) 644 reg->cmbuf[id].cdb[i] = sc->sc_omsg[i]; 645 } 646 void 647 spifi_command(struct spifi_softc *sc) 648 { 649 struct spifi_scb *scb = sc->sc_nexus; 650 struct spifi_reg *reg = sc->sc_reg; 651 int len = scb->cmdlen; 652 u_char *cmdp = (char *)&scb->cmd; 653 int i; 654 655 DPRINTF("spifi_command\n"); 656 657 reg->cmdpage = scb->lun_targ; 658 659 if (reg->init_status & IST_ACK) { 660 /* Negate ACK. */ 661 reg->prcmd = PRC_NJMP | PRC_CLRACK | PRC_COMMAND; 662 reg->prcmd = PRC_NJMP | PRC_COMMAND; 663 } 664 665 reg->cmlen = CML_AMSG_EN | len; 666 667 for (i = 0; i < len; i++) 668 reg->cmbuf[sc->sc_id].cdb[i] = *cmdp++; 669 670 reg->prcmd = PRC_COMMAND; 671 } 672 673 void 674 spifi_data_io(struct spifi_softc *sc) 675 { 676 struct spifi_scb *scb = sc->sc_nexus; 677 struct spifi_reg *reg = sc->sc_reg; 678 int phase; 679 680 DPRINTF("spifi_data_io\n"); 681 682 phase = reg->prstat & PRS_PHASE; 683 dmac3_reset(sc->sc_dma); 684 685 spifi_write_count(reg, scb->resid); 686 reg->cmlen = CML_AMSG_EN | 1; 687 reg->data_xfer = 0; 688 689 scb->flags |= SPIFI_DMA; 690 if (phase == SPIFI_DATAIN) { 691 if (reg->fifoctrl & FIFOC_SSTKACT) { 692 /* 693 * Clear FIFO and load the contents of synchronous 694 * stack into the FIFO. 695 */ 696 reg->fifoctrl = FIFOC_CLREVEN; 697 reg->fifoctrl = FIFOC_LOAD; 698 } 699 reg->autodata = ADATA_IN | scb->lun_targ; 700 dmac3_start(sc->sc_dma, scb->daddr, scb->resid, DMAC3_CSR_RECV); 701 reg->prcmd = PRC_DATAIN; 702 } else { 703 reg->fifoctrl = FIFOC_CLREVEN; 704 reg->autodata = scb->lun_targ; 705 dmac3_start(sc->sc_dma, scb->daddr, scb->resid, DMAC3_CSR_SEND); 706 reg->prcmd = PRC_DATAOUT; 707 } 708 } 709 710 void 711 spifi_status(struct spifi_softc *sc) 712 { 713 struct spifi_reg *reg = sc->sc_reg; 714 715 DPRINTF("spifi_status\n"); 716 spifi_fifo_drain(sc); 717 reg->cmlen = CML_AMSG_EN | 1; 718 reg->prcmd = PRC_STATUS; 719 } 720 721 int 722 spifi_done(sc) 723 struct spifi_softc *sc; 724 { 725 struct spifi_scb *scb = sc->sc_nexus; 726 struct scsipi_xfer *xs = scb->xs; 727 728 DPRINTF("spifi_done\n"); 729 730 xs->status = scb->status; 731 if (xs->status == SCSI_CHECK) { 732 DPRINTF("spifi_done: CHECK CONDITION\n"); 733 if (xs->error == XS_NOERROR) 734 xs->error = XS_BUSY; 735 } 736 737 xs->resid = scb->resid; 738 739 scsipi_done(xs); 740 spifi_free_scb(sc, scb); 741 742 sc->sc_nexus = NULL; 743 spifi_sched(sc); 744 745 return FALSE; 746 } 747 748 void 749 spifi_fifo_drain(sc) 750 struct spifi_softc *sc; 751 { 752 struct spifi_scb *scb = sc->sc_nexus; 753 struct spifi_reg *reg = sc->sc_reg; 754 int fifoctrl, fifo_count; 755 756 DPRINTF("spifi_fifo_drain\n"); 757 758 if ((scb->flags & SPIFI_READ) == 0) 759 return; 760 761 fifoctrl = reg->fifoctrl; 762 if (fifoctrl & FIFOC_SSTKACT) 763 return; 764 765 fifo_count = 8 - (fifoctrl & FIFOC_FSLOT); 766 if (fifo_count > 0 && (scb->flags & SPIFI_DMA)) { 767 /* Flush data still in FIFO. */ 768 reg->fifoctrl = FIFOC_FLUSH; 769 return; 770 } 771 772 reg->fifoctrl = FIFOC_CLREVEN; 773 } 774 775 void 776 spifi_reset(sc) 777 struct spifi_softc *sc; 778 { 779 struct spifi_reg *reg = sc->sc_reg; 780 int id = sc->sc_id; 781 782 DPRINTF("spifi_reset\n"); 783 784 reg->auxctrl = AUXCTRL_SRST; 785 reg->auxctrl = AUXCTRL_CRST; 786 787 dmac3_reset(sc->sc_dma); 788 789 reg->auxctrl = AUXCTRL_SRST; 790 reg->auxctrl = AUXCTRL_CRST; 791 reg->auxctrl = AUXCTRL_DMAEDGE; 792 793 /* Mask (only) target mode interrupts. */ 794 reg->imask = INTR_TGSEL | INTR_COMRECV; 795 796 reg->config = CONFIG_DMABURST | CONFIG_PCHKEN | CONFIG_PGENEN | id; 797 reg->fastwide = FAST_FASTEN; 798 reg->prctrl = 0; 799 reg->loopctrl = 0; 800 801 /* Enable automatic status input except the initiator. */ 802 reg->autostat = ~(1 << id); 803 804 reg->fifoctrl = FIFOC_CLREVEN; 805 spifi_write_count(reg, 0); 806 807 /* Flush write buffer. */ 808 (void)reg->spstat; 809 } 810 811 void 812 spifi_bus_reset(sc) 813 struct spifi_softc *sc; 814 { 815 struct spifi_reg *reg = sc->sc_reg; 816 817 printf("%s: bus reset\n", sc->sc_dev.dv_xname); 818 819 sc->sc_nexus = NULL; 820 821 reg->auxctrl = AUXCTRL_SETRST; 822 delay(100); 823 reg->auxctrl = 0; 824 } 825 826 #if 0 827 static u_char spifi_sync_period[] = { 828 /* 0 1 2 3 4 5 6 7 8 9 10 11 */ 829 137, 125, 112, 100, 87, 75, 62, 50, 43, 37, 31, 25 830 }; 831 832 void 833 spifi_setsync(sc, ti) 834 struct spifi_softc *sc; 835 struct spifi_tinfo *ti; 836 { 837 if ((ti->flags & T_SYNCMODE) == 0) 838 reg->data_xfer = 0; 839 else { 840 int period = ti->period; 841 int offset = ti->offset; 842 int v; 843 844 for (v = sizeof(spifi_sync_period) - 1; v >= 0; v--) 845 if (spifi_sync_period[v] >= period) 846 break; 847 if (v == -1) 848 reg->data_xfer = 0; /* XXX */ 849 else 850 reg->data_xfer = v << 4 | offset; 851 } 852 } 853 #endif 854
Indexes created Tue Sep 30 20:09:53 GMT 2025