aha.c revision 1.21
1 /* $NetBSD: aha.c,v 1.21 1998/12/05 19:43:49 mjacob Exp $ */ 2 3 #include "opt_ddb.h" 4 5 #undef AHADIAG 6 #ifdef DDB 7 #define integrate 8 #else 9 #define integrate static inline 10 #endif 11 12 /*- 13 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 14 * All rights reserved. 15 * 16 * This code is derived from software contributed to The NetBSD Foundation 17 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 18 * Simulation Facility, NASA Ames Research Center. 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 1. Redistributions of source code must retain the above copyright 24 * notice, this list of conditions and the following disclaimer. 25 * 2. Redistributions in binary form must reproduce the above copyright 26 * notice, this list of conditions and the following disclaimer in the 27 * documentation and/or other materials provided with the distribution. 28 * 3. All advertising materials mentioning features or use of this software 29 * must display the following acknowledgement: 30 * This product includes software developed by the NetBSD 31 * Foundation, Inc. and its contributors. 32 * 4. Neither the name of The NetBSD Foundation nor the names of its 33 * contributors may be used to endorse or promote products derived 34 * from this software without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 37 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 38 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 40 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 41 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 42 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 43 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 44 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 46 * POSSIBILITY OF SUCH DAMAGE. 47 */ 48 49 /* 50 * Originally written by Julian Elischer (julian (at) tfs.com) 51 * for TRW Financial Systems for use under the MACH(2.5) operating system. 52 * 53 * TRW Financial Systems, in accordance with their agreement with Carnegie 54 * Mellon University, makes this software available to CMU to distribute 55 * or use in any manner that they see fit as long as this message is kept with 56 * the software. For this reason TFS also grants any other persons or 57 * organisations permission to use or modify this software. 58 * 59 * TFS supplies this software to be publicly redistributed 60 * on the understanding that TFS is not responsible for the correct 61 * functioning of this software in any circumstances. 62 */ 63 64 #include <sys/types.h> 65 #include <sys/param.h> 66 #include <sys/systm.h> 67 #include <sys/kernel.h> 68 #include <sys/errno.h> 69 #include <sys/ioctl.h> 70 #include <sys/device.h> 71 #include <sys/malloc.h> 72 #include <sys/buf.h> 73 #include <sys/proc.h> 74 #include <sys/user.h> 75 76 #include <machine/bus.h> 77 #include <machine/intr.h> 78 79 #include <dev/scsipi/scsi_all.h> 80 #include <dev/scsipi/scsipi_all.h> 81 #include <dev/scsipi/scsiconf.h> 82 83 #include <dev/ic/ahareg.h> 84 #include <dev/ic/ahavar.h> 85 86 #ifndef DDB 87 #define Debugger() panic("should call debugger here (aha1542.c)") 88 #endif /* ! DDB */ 89 90 #define AHA_MAXXFER ((AHA_NSEG - 1) << PGSHIFT) 91 92 #ifdef AHADEBUG 93 int aha_debug = 1; 94 #endif /* AHADEBUG */ 95 96 int aha_cmd __P((bus_space_tag_t, bus_space_handle_t, struct aha_softc *, int, 97 u_char *, int, u_char *)); 98 integrate void aha_finish_ccbs __P((struct aha_softc *)); 99 integrate void aha_reset_ccb __P((struct aha_softc *, struct aha_ccb *)); 100 void aha_free_ccb __P((struct aha_softc *, struct aha_ccb *)); 101 integrate int aha_init_ccb __P((struct aha_softc *, struct aha_ccb *)); 102 struct aha_ccb *aha_get_ccb __P((struct aha_softc *, int)); 103 struct aha_ccb *aha_ccb_phys_kv __P((struct aha_softc *, u_long)); 104 void aha_queue_ccb __P((struct aha_softc *, struct aha_ccb *)); 105 void aha_collect_mbo __P((struct aha_softc *)); 106 void aha_start_ccbs __P((struct aha_softc *)); 107 void aha_done __P((struct aha_softc *, struct aha_ccb *)); 108 int aha_init __P((struct aha_softc *)); 109 void aha_inquire_setup_information __P((struct aha_softc *)); 110 void ahaminphys __P((struct buf *)); 111 int aha_scsi_cmd __P((struct scsipi_xfer *)); 112 int aha_poll __P((struct aha_softc *, struct scsipi_xfer *, int)); 113 void aha_timeout __P((void *arg)); 114 int aha_create_ccbs __P((struct aha_softc *, struct aha_ccb *, int)); 115 void aha_enqueue __P((struct aha_softc *, struct scsipi_xfer *, int)); 116 struct scsipi_xfer *aha_dequeue __P((struct aha_softc *)); 117 118 /* the below structure is so we have a default dev struct for out link struct */ 119 struct scsipi_device aha_dev = { 120 NULL, /* Use default error handler */ 121 NULL, /* have a queue, served by this */ 122 NULL, /* have no async handler */ 123 NULL, /* Use default 'done' routine */ 124 }; 125 126 #define AHA_RESET_TIMEOUT 2000 /* time to wait for reset (mSec) */ 127 #define AHA_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 128 129 /* 130 * Insert a scsipi_xfer into the software queue. We overload xs->free_list 131 * to avoid having to allocate additional resources (since we're used 132 * only during resource shortages anyhow. 133 */ 134 void 135 aha_enqueue(sc, xs, infront) 136 struct aha_softc *sc; 137 struct scsipi_xfer *xs; 138 int infront; 139 { 140 141 if (infront || sc->sc_queue.lh_first == NULL) { 142 if (sc->sc_queue.lh_first == NULL) 143 sc->sc_queuelast = xs; 144 LIST_INSERT_HEAD(&sc->sc_queue, xs, free_list); 145 return; 146 } 147 148 LIST_INSERT_AFTER(sc->sc_queuelast, xs, free_list); 149 sc->sc_queuelast = xs; 150 } 151 152 /* 153 * Pull a scsipi_xfer off the front of the software queue. 154 */ 155 struct scsipi_xfer * 156 aha_dequeue(sc) 157 struct aha_softc *sc; 158 { 159 struct scsipi_xfer *xs; 160 161 xs = sc->sc_queue.lh_first; 162 LIST_REMOVE(xs, free_list); 163 164 if (sc->sc_queue.lh_first == NULL) 165 sc->sc_queuelast = NULL; 166 167 return (xs); 168 } 169 170 /* 171 * aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 172 * 173 * Activate Adapter command 174 * icnt: number of args (outbound bytes including opcode) 175 * ibuf: argument buffer 176 * ocnt: number of expected returned bytes 177 * obuf: result buffer 178 * wait: number of seconds to wait for response 179 * 180 * Performs an adapter command through the ports. Not to be confused with a 181 * scsi command, which is read in via the dma; one of the adapter commands 182 * tells it to read in a scsi command. 183 */ 184 int 185 aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 186 bus_space_tag_t iot; 187 bus_space_handle_t ioh; 188 struct aha_softc *sc; 189 int icnt, ocnt; 190 u_char *ibuf, *obuf; 191 { 192 const char *name; 193 register int i; 194 int wait; 195 u_char sts; 196 u_char opcode = ibuf[0]; 197 198 if (sc != NULL) 199 name = sc->sc_dev.dv_xname; 200 else 201 name = "(aha probe)"; 202 203 /* 204 * Calculate a reasonable timeout for the command. 205 */ 206 switch (opcode) { 207 case AHA_INQUIRE_DEVICES: 208 wait = 90 * 20000; 209 break; 210 default: 211 wait = 1 * 20000; 212 break; 213 } 214 215 /* 216 * Wait for the adapter to go idle, unless it's one of 217 * the commands which don't need this 218 */ 219 if (opcode != AHA_MBO_INTR_EN) { 220 for (i = 20000; i; i--) { /* 1 sec? */ 221 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 222 if (sts & AHA_STAT_IDLE) 223 break; 224 delay(50); 225 } 226 if (!i) { 227 printf("%s: aha_cmd, host not idle(0x%x)\n", 228 name, sts); 229 return (1); 230 } 231 } 232 /* 233 * Now that it is idle, if we expect output, preflush the 234 * queue feeding to us. 235 */ 236 if (ocnt) { 237 while ((bus_space_read_1(iot, ioh, AHA_STAT_PORT)) & AHA_STAT_DF) 238 bus_space_read_1(iot, ioh, AHA_DATA_PORT); 239 } 240 /* 241 * Output the command and the number of arguments given 242 * for each byte, first check the port is empty. 243 */ 244 while (icnt--) { 245 for (i = wait; i; i--) { 246 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 247 if (!(sts & AHA_STAT_CDF)) 248 break; 249 delay(50); 250 } 251 if (!i) { 252 if (opcode != AHA_INQUIRE_REVISION) 253 printf("%s: aha_cmd, cmd/data port full\n", name); 254 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 255 return (1); 256 } 257 bus_space_write_1(iot, ioh, AHA_CMD_PORT, *ibuf++); 258 } 259 /* 260 * If we expect input, loop that many times, each time, 261 * looking for the data register to have valid data 262 */ 263 while (ocnt--) { 264 for (i = wait; i; i--) { 265 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 266 if (sts & AHA_STAT_DF) 267 break; 268 delay(50); 269 } 270 if (!i) { 271 if (opcode != AHA_INQUIRE_REVISION) 272 printf("%s: aha_cmd, cmd/data port empty %d\n", 273 name, ocnt); 274 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 275 return (1); 276 } 277 *obuf++ = bus_space_read_1(iot, ioh, AHA_DATA_PORT); 278 } 279 /* 280 * Wait for the board to report a finished instruction. 281 * We may get an extra interrupt for the HACC signal, but this is 282 * unimportant. 283 */ 284 if (opcode != AHA_MBO_INTR_EN) { 285 for (i = 20000; i; i--) { /* 1 sec? */ 286 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 287 /* XXX Need to save this in the interrupt handler? */ 288 if (sts & AHA_INTR_HACC) 289 break; 290 delay(50); 291 } 292 if (!i) { 293 printf("%s: aha_cmd, host not finished(0x%x)\n", 294 name, sts); 295 return (1); 296 } 297 } 298 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 299 return (0); 300 } 301 302 void 303 aha_attach(sc, apd) 304 struct aha_softc *sc; 305 struct aha_probe_data *apd; 306 { 307 308 TAILQ_INIT(&sc->sc_free_ccb); 309 TAILQ_INIT(&sc->sc_waiting_ccb); 310 LIST_INIT(&sc->sc_queue); 311 312 /* 313 * Fill in the adapter. 314 */ 315 sc->sc_adapter.scsipi_cmd = aha_scsi_cmd; 316 sc->sc_adapter.scsipi_minphys = ahaminphys; 317 318 /* 319 * fill in the prototype scsipi_link. 320 */ 321 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 322 sc->sc_link.adapter_softc = sc; 323 sc->sc_link.scsipi_scsi.adapter_target = apd->sc_scsi_dev; 324 sc->sc_link.adapter = &sc->sc_adapter; 325 sc->sc_link.device = &aha_dev; 326 sc->sc_link.openings = 2; 327 sc->sc_link.scsipi_scsi.max_target = 7; 328 sc->sc_link.scsipi_scsi.max_lun = 7; 329 sc->sc_link.type = BUS_SCSI; 330 331 aha_inquire_setup_information(sc); 332 if (aha_init(sc) != 0) { 333 /* Error during initialization! */ 334 return; 335 } 336 337 /* 338 * ask the adapter what subunits are present 339 */ 340 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 341 } 342 343 integrate void 344 aha_finish_ccbs(sc) 345 struct aha_softc *sc; 346 { 347 struct aha_mbx_in *wmbi; 348 struct aha_ccb *ccb; 349 int i; 350 351 wmbi = wmbx->tmbi; 352 353 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 354 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 355 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 356 357 if (wmbi->stat == AHA_MBI_FREE) { 358 for (i = 0; i < AHA_MBX_SIZE; i++) { 359 if (wmbi->stat != AHA_MBI_FREE) { 360 printf("%s: mbi not in round-robin order\n", 361 sc->sc_dev.dv_xname); 362 goto AGAIN; 363 } 364 aha_nextmbx(wmbi, wmbx, mbi); 365 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 366 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 367 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 368 } 369 #ifdef AHADIAGnot 370 printf("%s: mbi interrupt with no full mailboxes\n", 371 sc->sc_dev.dv_xname); 372 #endif 373 return; 374 } 375 376 AGAIN: 377 do { 378 ccb = aha_ccb_phys_kv(sc, phystol(wmbi->ccb_addr)); 379 if (!ccb) { 380 printf("%s: bad mbi ccb pointer; skipping\n", 381 sc->sc_dev.dv_xname); 382 goto next; 383 } 384 385 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 386 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 387 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 388 389 #ifdef AHADEBUG 390 if (aha_debug) { 391 u_char *cp = &ccb->scsi_cmd; 392 printf("op=%x %x %x %x %x %x\n", 393 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 394 printf("stat %x for mbi addr = 0x%08x, ", 395 wmbi->stat, wmbi); 396 printf("ccb addr = 0x%x\n", ccb); 397 } 398 #endif /* AHADEBUG */ 399 400 switch (wmbi->stat) { 401 case AHA_MBI_OK: 402 case AHA_MBI_ERROR: 403 if ((ccb->flags & CCB_ABORT) != 0) { 404 /* 405 * If we already started an abort, wait for it 406 * to complete before clearing the CCB. We 407 * could instead just clear CCB_SENDING, but 408 * what if the mailbox was already received? 409 * The worst that happens here is that we clear 410 * the CCB a bit later than we need to. BFD. 411 */ 412 goto next; 413 } 414 break; 415 416 case AHA_MBI_ABORT: 417 case AHA_MBI_UNKNOWN: 418 /* 419 * Even if the CCB wasn't found, we clear it anyway. 420 * See preceeding comment. 421 */ 422 break; 423 424 default: 425 printf("%s: bad mbi status %02x; skipping\n", 426 sc->sc_dev.dv_xname, wmbi->stat); 427 goto next; 428 } 429 430 untimeout(aha_timeout, ccb); 431 aha_done(sc, ccb); 432 433 next: 434 wmbi->stat = AHA_MBI_FREE; 435 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 436 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 437 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 438 aha_nextmbx(wmbi, wmbx, mbi); 439 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 440 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 441 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 442 } while (wmbi->stat != AHA_MBI_FREE); 443 444 wmbx->tmbi = wmbi; 445 } 446 447 /* 448 * Catch an interrupt from the adaptor 449 */ 450 int 451 aha_intr(arg) 452 void *arg; 453 { 454 struct aha_softc *sc = arg; 455 bus_space_tag_t iot = sc->sc_iot; 456 bus_space_handle_t ioh = sc->sc_ioh; 457 u_char sts; 458 459 #ifdef AHADEBUG 460 printf("%s: aha_intr ", sc->sc_dev.dv_xname); 461 #endif /*AHADEBUG */ 462 463 /* 464 * First acknowlege the interrupt, Then if it's not telling about 465 * a completed operation just return. 466 */ 467 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 468 if ((sts & AHA_INTR_ANYINTR) == 0) 469 return (0); 470 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 471 472 #ifdef AHADIAG 473 /* Make sure we clear CCB_SENDING before finishing a CCB. */ 474 aha_collect_mbo(sc); 475 #endif 476 477 /* Mail box out empty? */ 478 if (sts & AHA_INTR_MBOA) { 479 struct aha_toggle toggle; 480 481 toggle.cmd.opcode = AHA_MBO_INTR_EN; 482 toggle.cmd.enable = 0; 483 aha_cmd(iot, ioh, sc, 484 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 485 0, (u_char *)0); 486 aha_start_ccbs(sc); 487 } 488 489 /* Mail box in full? */ 490 if (sts & AHA_INTR_MBIF) 491 aha_finish_ccbs(sc); 492 493 return (1); 494 } 495 496 integrate void 497 aha_reset_ccb(sc, ccb) 498 struct aha_softc *sc; 499 struct aha_ccb *ccb; 500 { 501 502 ccb->flags = 0; 503 } 504 505 /* 506 * A ccb is put onto the free list. 507 */ 508 void 509 aha_free_ccb(sc, ccb) 510 struct aha_softc *sc; 511 struct aha_ccb *ccb; 512 { 513 int s; 514 515 s = splbio(); 516 517 aha_reset_ccb(sc, ccb); 518 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 519 520 /* 521 * If there were none, wake anybody waiting for one to come free, 522 * starting with queued entries. 523 */ 524 if (ccb->chain.tqe_next == 0) 525 wakeup(&sc->sc_free_ccb); 526 527 splx(s); 528 } 529 530 integrate int 531 aha_init_ccb(sc, ccb) 532 struct aha_softc *sc; 533 struct aha_ccb *ccb; 534 { 535 bus_dma_tag_t dmat = sc->sc_dmat; 536 int hashnum, error; 537 538 /* 539 * Create the DMA map for this CCB. 540 */ 541 error = bus_dmamap_create(dmat, AHA_MAXXFER, AHA_NSEG, AHA_MAXXFER, 542 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 543 if (error) { 544 printf("%s: unable to create ccb DMA map, error = %d\n", 545 sc->sc_dev.dv_xname, error); 546 return (error); 547 } 548 549 /* 550 * put in the phystokv hash table 551 * Never gets taken out. 552 */ 553 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 554 AHA_CCB_OFF(ccb); 555 hashnum = CCB_HASH(ccb->hashkey); 556 ccb->nexthash = sc->sc_ccbhash[hashnum]; 557 sc->sc_ccbhash[hashnum] = ccb; 558 aha_reset_ccb(sc, ccb); 559 return (0); 560 } 561 562 /* 563 * Create a set of ccbs and add them to the free list. Called once 564 * by aha_init(). We return the number of CCBs successfully created. 565 */ 566 int 567 aha_create_ccbs(sc, ccbstore, count) 568 struct aha_softc *sc; 569 struct aha_ccb *ccbstore; 570 int count; 571 { 572 struct aha_ccb *ccb; 573 int i, error; 574 575 bzero(ccbstore, sizeof(struct aha_ccb) * count); 576 for (i = 0; i < count; i++) { 577 ccb = &ccbstore[i]; 578 if ((error = aha_init_ccb(sc, ccb)) != 0) { 579 printf("%s: unable to initialize ccb, error = %d\n", 580 sc->sc_dev.dv_xname, error); 581 goto out; 582 } 583 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 584 } 585 out: 586 return (i); 587 } 588 589 /* 590 * Get a free ccb 591 * 592 * If there are none, see if we can allocate a new one. If so, put it in 593 * the hash table too otherwise either return an error or sleep. 594 */ 595 struct aha_ccb * 596 aha_get_ccb(sc, flags) 597 struct aha_softc *sc; 598 int flags; 599 { 600 struct aha_ccb *ccb; 601 int s; 602 603 s = splbio(); 604 605 /* 606 * If we can and have to, sleep waiting for one to come free 607 * but only if we can't allocate a new one. 608 */ 609 for (;;) { 610 ccb = sc->sc_free_ccb.tqh_first; 611 if (ccb) { 612 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 613 break; 614 } 615 if ((flags & SCSI_NOSLEEP) != 0) 616 goto out; 617 tsleep(&sc->sc_free_ccb, PRIBIO, "ahaccb", 0); 618 } 619 620 ccb->flags |= CCB_ALLOC; 621 622 out: 623 splx(s); 624 return (ccb); 625 } 626 627 /* 628 * Given a physical address, find the ccb that it corresponds to. 629 */ 630 struct aha_ccb * 631 aha_ccb_phys_kv(sc, ccb_phys) 632 struct aha_softc *sc; 633 u_long ccb_phys; 634 { 635 int hashnum = CCB_HASH(ccb_phys); 636 struct aha_ccb *ccb = sc->sc_ccbhash[hashnum]; 637 638 while (ccb) { 639 if (ccb->hashkey == ccb_phys) 640 break; 641 ccb = ccb->nexthash; 642 } 643 return (ccb); 644 } 645 646 /* 647 * Queue a CCB to be sent to the controller, and send it if possible. 648 */ 649 void 650 aha_queue_ccb(sc, ccb) 651 struct aha_softc *sc; 652 struct aha_ccb *ccb; 653 { 654 655 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 656 aha_start_ccbs(sc); 657 } 658 659 /* 660 * Garbage collect mailboxes that are no longer in use. 661 */ 662 void 663 aha_collect_mbo(sc) 664 struct aha_softc *sc; 665 { 666 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 667 #ifdef AHADIAG 668 struct aha_ccb *ccb; 669 #endif 670 671 wmbo = wmbx->cmbo; 672 673 while (sc->sc_mbofull > 0) { 674 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 675 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 676 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 677 if (wmbo->cmd != AHA_MBO_FREE) 678 break; 679 680 #ifdef AHADIAG 681 ccb = aha_ccb_phys_kv(sc, phystol(wmbo->ccb_addr)); 682 ccb->flags &= ~CCB_SENDING; 683 #endif 684 685 --sc->sc_mbofull; 686 aha_nextmbx(wmbo, wmbx, mbo); 687 } 688 689 wmbx->cmbo = wmbo; 690 } 691 692 /* 693 * Send as many CCBs as we have empty mailboxes for. 694 */ 695 void 696 aha_start_ccbs(sc) 697 struct aha_softc *sc; 698 { 699 bus_space_tag_t iot = sc->sc_iot; 700 bus_space_handle_t ioh = sc->sc_ioh; 701 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 702 struct aha_ccb *ccb; 703 704 wmbo = wmbx->tmbo; 705 706 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 707 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 708 aha_collect_mbo(sc); 709 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 710 struct aha_toggle toggle; 711 712 toggle.cmd.opcode = AHA_MBO_INTR_EN; 713 toggle.cmd.enable = 1; 714 aha_cmd(iot, ioh, sc, 715 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 716 0, (u_char *)0); 717 break; 718 } 719 } 720 721 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 722 #ifdef AHADIAG 723 ccb->flags |= CCB_SENDING; 724 #endif 725 726 /* Link ccb to mbo. */ 727 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 728 AHA_CCB_OFF(ccb), wmbo->ccb_addr); 729 if (ccb->flags & CCB_ABORT) 730 wmbo->cmd = AHA_MBO_ABORT; 731 else 732 wmbo->cmd = AHA_MBO_START; 733 734 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 735 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 736 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 737 738 /* Tell the card to poll immediately. */ 739 bus_space_write_1(iot, ioh, AHA_CMD_PORT, AHA_START_SCSI); 740 741 if ((ccb->xs->flags & SCSI_POLL) == 0) 742 timeout(aha_timeout, ccb, (ccb->timeout * hz) / 1000); 743 744 ++sc->sc_mbofull; 745 aha_nextmbx(wmbo, wmbx, mbo); 746 } 747 748 wmbx->tmbo = wmbo; 749 } 750 751 /* 752 * We have a ccb which has been processed by the 753 * adaptor, now we look to see how the operation 754 * went. Wake up the owner if waiting 755 */ 756 void 757 aha_done(sc, ccb) 758 struct aha_softc *sc; 759 struct aha_ccb *ccb; 760 { 761 bus_dma_tag_t dmat = sc->sc_dmat; 762 struct scsipi_sense_data *s1, *s2; 763 struct scsipi_xfer *xs = ccb->xs; 764 765 SC_DEBUG(xs->sc_link, SDEV_DB2, ("aha_done\n")); 766 767 /* 768 * If we were a data transfer, unload the map that described 769 * the data buffer. 770 */ 771 if (xs->datalen) { 772 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 773 ccb->dmamap_xfer->dm_mapsize, 774 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 775 BUS_DMASYNC_POSTWRITE); 776 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 777 } 778 779 /* 780 * Otherwise, put the results of the operation 781 * into the xfer and call whoever started it 782 */ 783 #ifdef AHADIAG 784 if (ccb->flags & CCB_SENDING) { 785 printf("%s: exiting ccb still in transit!\n", sc->sc_dev.dv_xname); 786 Debugger(); 787 return; 788 } 789 #endif 790 if ((ccb->flags & CCB_ALLOC) == 0) { 791 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 792 Debugger(); 793 return; 794 } 795 if (xs->error == XS_NOERROR) { 796 if (ccb->host_stat != AHA_OK) { 797 switch (ccb->host_stat) { 798 case AHA_SEL_TIMEOUT: /* No response */ 799 xs->error = XS_SELTIMEOUT; 800 break; 801 default: /* Other scsi protocol messes */ 802 printf("%s: host_stat %x\n", 803 sc->sc_dev.dv_xname, ccb->host_stat); 804 xs->error = XS_DRIVER_STUFFUP; 805 break; 806 } 807 } else if (ccb->target_stat != SCSI_OK) { 808 switch (ccb->target_stat) { 809 case SCSI_CHECK: 810 s1 = (struct scsipi_sense_data *) (((char *) (&ccb->scsi_cmd)) + 811 ccb->scsi_cmd_length); 812 s2 = &xs->sense.scsi_sense; 813 *s2 = *s1; 814 xs->error = XS_SENSE; 815 break; 816 case SCSI_BUSY: 817 xs->error = XS_BUSY; 818 break; 819 default: 820 printf("%s: target_stat %x\n", 821 sc->sc_dev.dv_xname, ccb->target_stat); 822 xs->error = XS_DRIVER_STUFFUP; 823 break; 824 } 825 } else 826 xs->resid = 0; 827 } 828 aha_free_ccb(sc, ccb); 829 xs->flags |= ITSDONE; 830 scsipi_done(xs); 831 832 /* 833 * If there are queue entries in the software queue, try to 834 * run the first one. We should be more or less guaranteed 835 * to succeed, since we just freed a CCB. 836 * 837 * NOTE: aha_scsi_cmd() relies on our calling it with 838 * the first entry in the queue. 839 */ 840 if ((xs = sc->sc_queue.lh_first) != NULL) 841 (void) aha_scsi_cmd(xs); 842 } 843 844 /* 845 * Find the board and find its irq/drq 846 */ 847 int 848 aha_find(iot, ioh, sc) 849 bus_space_tag_t iot; 850 bus_space_handle_t ioh; 851 struct aha_probe_data *sc; 852 { 853 int i; 854 u_char sts; 855 struct aha_config config; 856 int irq, drq; 857 858 /* 859 * reset board, If it doesn't respond, assume 860 * that it's not there.. good for the probe 861 */ 862 863 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_HRST | AHA_CTRL_SRST); 864 865 delay(100); 866 for (i = AHA_RESET_TIMEOUT; i; i--) { 867 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 868 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 869 break; 870 delay(1000); /* calibrated in msec */ 871 } 872 if (!i) { 873 #ifdef AHADEBUG 874 if (aha_debug) 875 printf("aha_find: No answer from adaptec board\n"); 876 #endif /* AHADEBUG */ 877 return (0); 878 } 879 880 /* 881 * setup dma channel from jumpers and save int 882 * level 883 */ 884 delay(1000); /* for Bustek 545 */ 885 config.cmd.opcode = AHA_INQUIRE_CONFIG; 886 aha_cmd(iot, ioh, (struct aha_softc *)0, 887 sizeof(config.cmd), (u_char *)&config.cmd, 888 sizeof(config.reply), (u_char *)&config.reply); 889 switch (config.reply.chan) { 890 case EISADMA: 891 drq = -1; 892 break; 893 case CHAN0: 894 drq = 0; 895 break; 896 case CHAN5: 897 drq = 5; 898 break; 899 case CHAN6: 900 drq = 6; 901 break; 902 case CHAN7: 903 drq = 7; 904 break; 905 default: 906 printf("aha_find: illegal drq setting %x\n", config.reply.chan); 907 return (0); 908 } 909 910 switch (config.reply.intr) { 911 case INT9: 912 irq = 9; 913 break; 914 case INT10: 915 irq = 10; 916 break; 917 case INT11: 918 irq = 11; 919 break; 920 case INT12: 921 irq = 12; 922 break; 923 case INT14: 924 irq = 14; 925 break; 926 case INT15: 927 irq = 15; 928 break; 929 default: 930 printf("aha_find: illegal irq setting %x\n", config.reply.intr); 931 return (0); 932 } 933 934 if (sc) { 935 sc->sc_irq = irq; 936 sc->sc_drq = drq; 937 sc->sc_scsi_dev = config.reply.scsi_dev; 938 } 939 940 return (1); 941 } 942 943 /* 944 * Start the board, ready for normal operation 945 */ 946 int 947 aha_init(sc) 948 struct aha_softc *sc; 949 { 950 bus_space_tag_t iot = sc->sc_iot; 951 bus_space_handle_t ioh = sc->sc_ioh; 952 bus_dma_segment_t seg; 953 struct aha_devices devices; 954 struct aha_setup setup; 955 struct aha_mailbox mailbox; 956 int error, i, j, initial_ccbs, rseg; 957 958 /* 959 * XXX 960 * If we are a 1542C or later, disable the extended BIOS so that the 961 * mailbox interface is unlocked. 962 * No need to check the extended BIOS flags as some of the 963 * extensions that cause us problems are not flagged in that byte. 964 */ 965 if (!strncmp(sc->sc_model, "1542C", 5)) { 966 struct aha_extbios extbios; 967 struct aha_unlock unlock; 968 969 printf("%s: unlocking mailbox interface\n", sc->sc_dev.dv_xname); 970 extbios.cmd.opcode = AHA_EXT_BIOS; 971 aha_cmd(iot, ioh, sc, 972 sizeof(extbios.cmd), (u_char *)&extbios.cmd, 973 sizeof(extbios.reply), (u_char *)&extbios.reply); 974 975 #ifdef AHADEBUG 976 printf("%s: flags=%02x, mailboxlock=%02x\n", 977 sc->sc_dev.dv_xname, 978 extbios.reply.flags, extbios.reply.mailboxlock); 979 #endif /* AHADEBUG */ 980 981 unlock.cmd.opcode = AHA_MBX_ENABLE; 982 unlock.cmd.junk = 0; 983 unlock.cmd.magic = extbios.reply.mailboxlock; 984 aha_cmd(iot, ioh, sc, 985 sizeof(unlock.cmd), (u_char *)&unlock.cmd, 986 0, (u_char *)0); 987 } 988 989 #if 0 990 /* 991 * Change the bus on/off times to not clash with other dma users. 992 */ 993 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); 994 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); 995 #endif 996 997 /* Inquire Installed Devices (to force synchronous negotiation). */ 998 devices.cmd.opcode = AHA_INQUIRE_DEVICES; 999 aha_cmd(iot, ioh, sc, 1000 sizeof(devices.cmd), (u_char *)&devices.cmd, 1001 sizeof(devices.reply), (u_char *)&devices.reply); 1002 1003 /* Count installed units */ 1004 initial_ccbs = 0; 1005 for (i = 0; i < 8; i++) { 1006 for (j = 0; j < 8; j++) { 1007 if (((devices.reply.lun_map[i] >> j) & 1) == 1) 1008 initial_ccbs += 1; 1009 } 1010 } 1011 initial_ccbs *= sc->sc_link.openings; 1012 if (initial_ccbs > AHA_CCB_MAX) 1013 initial_ccbs = AHA_CCB_MAX; 1014 if (initial_ccbs == 0) /* yes, this can happen */ 1015 initial_ccbs = sc->sc_link.openings; 1016 1017 /* Obtain setup information from. */ 1018 setup.cmd.opcode = AHA_INQUIRE_SETUP; 1019 setup.cmd.len = sizeof(setup.reply); 1020 aha_cmd(iot, ioh, sc, 1021 sizeof(setup.cmd), (u_char *)&setup.cmd, 1022 sizeof(setup.reply), (u_char *)&setup.reply); 1023 1024 printf("%s: %s, %s\n", 1025 sc->sc_dev.dv_xname, 1026 setup.reply.sync_neg ? "sync" : "async", 1027 setup.reply.parity ? "parity" : "no parity"); 1028 1029 for (i = 0; i < 8; i++) { 1030 if (!setup.reply.sync[i].valid || 1031 (!setup.reply.sync[i].offset && !setup.reply.sync[i].period)) 1032 continue; 1033 printf("%s targ %d: sync, offset %d, period %dnsec\n", 1034 sc->sc_dev.dv_xname, i, 1035 setup.reply.sync[i].offset, setup.reply.sync[i].period * 50 + 200); 1036 } 1037 1038 /* 1039 * Allocate the mailbox and control blocks. 1040 */ 1041 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct aha_control), 1042 NBPG, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 1043 printf("%s: unable to allocate control structures, " 1044 "error = %d\n", sc->sc_dev.dv_xname, error); 1045 return (error); 1046 } 1047 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 1048 sizeof(struct aha_control), (caddr_t *)&sc->sc_control, 1049 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 1050 printf("%s: unable to map control structures, error = %d\n", 1051 sc->sc_dev.dv_xname, error); 1052 return (error); 1053 } 1054 1055 /* 1056 * Create and load the DMA map used for the mailbox and 1057 * control blocks. 1058 */ 1059 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct aha_control), 1060 1, sizeof(struct aha_control), 0, BUS_DMA_NOWAIT, 1061 &sc->sc_dmamap_control)) != 0) { 1062 printf("%s: unable to create control DMA map, error = %d\n", 1063 sc->sc_dev.dv_xname, error); 1064 return (error); 1065 } 1066 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 1067 sc->sc_control, sizeof(struct aha_control), NULL, 1068 BUS_DMA_NOWAIT)) != 0) { 1069 printf("%s: unable to load control DMA map, error = %d\n", 1070 sc->sc_dev.dv_xname, error); 1071 return (error); 1072 } 1073 1074 /* 1075 * Initialize the control blocks. 1076 */ 1077 i = aha_create_ccbs(sc, sc->sc_control->ac_ccbs, initial_ccbs); 1078 if (i == 0) { 1079 printf("%s: unable to create control blocks\n", 1080 sc->sc_dev.dv_xname); 1081 return (ENOMEM); 1082 } else if (i != initial_ccbs) { 1083 printf("%s: WARNING: only %d of %d control blocks created\n", 1084 sc->sc_dev.dv_xname, i, initial_ccbs); 1085 } 1086 1087 /* 1088 * Set up initial mail box for round-robin operation. 1089 */ 1090 for (i = 0; i < AHA_MBX_SIZE; i++) { 1091 wmbx->mbo[i].cmd = AHA_MBO_FREE; 1092 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1093 AHA_MBO_OFF(&wmbx->mbo[i]), sizeof(struct aha_mbx_out), 1094 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1095 wmbx->mbi[i].stat = AHA_MBI_FREE; 1096 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1097 AHA_MBI_OFF(&wmbx->mbi[i]), sizeof(struct aha_mbx_in), 1098 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1099 } 1100 wmbx->cmbo = wmbx->tmbo = &wmbx->mbo[0]; 1101 wmbx->tmbi = &wmbx->mbi[0]; 1102 sc->sc_mbofull = 0; 1103 1104 /* Initialize mail box. */ 1105 mailbox.cmd.opcode = AHA_MBX_INIT; 1106 mailbox.cmd.nmbx = AHA_MBX_SIZE; 1107 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1108 offsetof(struct aha_control, ac_mbx), mailbox.cmd.addr); 1109 aha_cmd(iot, ioh, sc, 1110 sizeof(mailbox.cmd), (u_char *)&mailbox.cmd, 1111 0, (u_char *)0); 1112 return (0); 1113 } 1114 1115 void 1116 aha_inquire_setup_information(sc) 1117 struct aha_softc *sc; 1118 { 1119 bus_space_tag_t iot = sc->sc_iot; 1120 bus_space_handle_t ioh = sc->sc_ioh; 1121 struct aha_revision revision; 1122 u_char sts; 1123 int i; 1124 char *p; 1125 1126 strcpy(sc->sc_model, "unknown"); 1127 1128 /* 1129 * Assume we have a board at this stage, do an adapter inquire 1130 * to find out what type of controller it is. If the command 1131 * fails, we assume it's either a crusty board or an old 1542 1132 * clone, and skip the board-specific stuff. 1133 */ 1134 revision.cmd.opcode = AHA_INQUIRE_REVISION; 1135 if (aha_cmd(iot, ioh, sc, 1136 sizeof(revision.cmd), (u_char *)&revision.cmd, 1137 sizeof(revision.reply), (u_char *)&revision.reply)) { 1138 /* 1139 * aha_cmd() already started the reset. It's not clear we 1140 * even need to bother here. 1141 */ 1142 for (i = AHA_RESET_TIMEOUT; i; i--) { 1143 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 1144 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 1145 break; 1146 delay(1000); 1147 } 1148 if (!i) { 1149 #ifdef AHADEBUG 1150 printf("aha_init: soft reset failed\n"); 1151 #endif /* AHADEBUG */ 1152 return; 1153 } 1154 #ifdef AHADEBUG 1155 printf("aha_init: inquire command failed\n"); 1156 #endif /* AHADEBUG */ 1157 goto noinquire; 1158 } 1159 1160 #ifdef AHADEBUG 1161 printf("%s: inquire %x, %x, %x, %x\n", 1162 sc->sc_dev.dv_xname, 1163 revision.reply.boardid, revision.reply.spec_opts, 1164 revision.reply.revision_1, revision.reply.revision_2); 1165 #endif /* AHADEBUG */ 1166 1167 switch (revision.reply.boardid) { 1168 case 0x31: 1169 strcpy(sc->sc_model, "1540"); 1170 break; 1171 case 0x41: 1172 strcpy(sc->sc_model, "1540A/1542A/1542B"); 1173 break; 1174 case 0x42: 1175 strcpy(sc->sc_model, "1640"); 1176 break; 1177 case 0x43: 1178 strcpy(sc->sc_model, "1542C"); 1179 break; 1180 case 0x44: 1181 case 0x45: 1182 strcpy(sc->sc_model, "1542CF"); 1183 break; 1184 case 0x46: 1185 strcpy(sc->sc_model, "1542CP"); 1186 break; 1187 } 1188 1189 p = sc->sc_firmware; 1190 *p++ = revision.reply.revision_1; 1191 *p++ = '.'; 1192 *p++ = revision.reply.revision_2; 1193 *p = '\0'; 1194 1195 noinquire: 1196 printf("%s: model AHA-%s, firmware %s\n", 1197 sc->sc_dev.dv_xname, 1198 sc->sc_model, sc->sc_firmware); 1199 } 1200 1201 void 1202 ahaminphys(bp) 1203 struct buf *bp; 1204 { 1205 1206 if (bp->b_bcount > AHA_MAXXFER) 1207 bp->b_bcount = AHA_MAXXFER; 1208 minphys(bp); 1209 } 1210 1211 /* 1212 * start a scsi operation given the command and the data address. Also needs 1213 * the unit, target and lu. 1214 */ 1215 int 1216 aha_scsi_cmd(xs) 1217 struct scsipi_xfer *xs; 1218 { 1219 struct scsipi_link *sc_link = xs->sc_link; 1220 struct aha_softc *sc = sc_link->adapter_softc; 1221 bus_dma_tag_t dmat = sc->sc_dmat; 1222 struct aha_ccb *ccb; 1223 int error, seg, flags, s; 1224 int fromqueue = 0, dontqueue = 0; 1225 1226 SC_DEBUG(sc_link, SDEV_DB2, ("aha_scsi_cmd\n")); 1227 1228 s = splbio(); /* protect the queue */ 1229 1230 /* 1231 * If we're running the queue from aha_done(), we've been 1232 * called with the first queue entry as our argument. 1233 */ 1234 if (xs == sc->sc_queue.lh_first) { 1235 xs = aha_dequeue(sc); 1236 fromqueue = 1; 1237 goto get_ccb; 1238 } 1239 1240 /* Polled requests can't be queued for later. */ 1241 dontqueue = xs->flags & SCSI_POLL; 1242 1243 /* 1244 * If there are jobs in the queue, run them first. 1245 */ 1246 if (sc->sc_queue.lh_first != NULL) { 1247 /* 1248 * If we can't queue, we have to abort, since 1249 * we have to preserve order. 1250 */ 1251 if (dontqueue) { 1252 splx(s); 1253 xs->error = XS_DRIVER_STUFFUP; 1254 return (TRY_AGAIN_LATER); 1255 } 1256 1257 /* 1258 * Swap with the first queue entry. 1259 */ 1260 aha_enqueue(sc, xs, 0); 1261 xs = aha_dequeue(sc); 1262 fromqueue = 1; 1263 } 1264 1265 get_ccb: 1266 /* 1267 * get a ccb to use. If the transfer 1268 * is from a buf (possibly from interrupt time) 1269 * then we can't allow it to sleep 1270 */ 1271 flags = xs->flags; 1272 if ((ccb = aha_get_ccb(sc, flags)) == NULL) { 1273 /* 1274 * If we can't queue, we lose. 1275 */ 1276 if (dontqueue) { 1277 splx(s); 1278 xs->error = XS_DRIVER_STUFFUP; 1279 return (TRY_AGAIN_LATER); 1280 } 1281 1282 /* 1283 * Stuff ourselves into the queue, in front 1284 * if we came off in the first place. 1285 */ 1286 aha_enqueue(sc, xs, fromqueue); 1287 splx(s); 1288 return (SUCCESSFULLY_QUEUED); 1289 } 1290 1291 splx(s); /* done playing with the queue */ 1292 1293 ccb->xs = xs; 1294 ccb->timeout = xs->timeout; 1295 1296 /* 1297 * Put all the arguments for the xfer in the ccb 1298 */ 1299 if (flags & SCSI_RESET) { 1300 ccb->opcode = AHA_RESET_CCB; 1301 ccb->scsi_cmd_length = 0; 1302 } else { 1303 /* can't use S/G if zero length */ 1304 ccb->opcode = (xs->datalen ? AHA_INIT_SCAT_GATH_CCB 1305 : AHA_INITIATOR_CCB); 1306 bcopy(xs->cmd, &ccb->scsi_cmd, 1307 ccb->scsi_cmd_length = xs->cmdlen); 1308 } 1309 1310 if (xs->datalen) { 1311 /* 1312 * Map the DMA transfer. 1313 */ 1314 #ifdef TFS 1315 if (flags & SCSI_DATA_UIO) { 1316 error = bus_dmamap_load_uio(dmat, 1317 ccb->dmamap_xfer, (struct uio *)xs->data, 1318 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : 1319 BUS_DMA_WAITOK); 1320 } else 1321 #endif 1322 { 1323 error = bus_dmamap_load(dmat, 1324 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 1325 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : 1326 BUS_DMA_WAITOK); 1327 } 1328 1329 if (error) { 1330 if (error == EFBIG) { 1331 printf("%s: aha_scsi_cmd, more than %d" 1332 " dma segments\n", 1333 sc->sc_dev.dv_xname, AHA_NSEG); 1334 } else { 1335 printf("%s: aha_scsi_cmd, error %d loading" 1336 " dma map\n", 1337 sc->sc_dev.dv_xname, error); 1338 } 1339 goto bad; 1340 } 1341 1342 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1343 ccb->dmamap_xfer->dm_mapsize, 1344 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 1345 BUS_DMASYNC_PREWRITE); 1346 1347 /* 1348 * Load the hardware scatter/gather map with the 1349 * contents of the DMA map. 1350 */ 1351 for (seg = 0; seg < ccb->dmamap_xfer->dm_nsegs; seg++) { 1352 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_addr, 1353 ccb->scat_gath[seg].seg_addr); 1354 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_len, 1355 ccb->scat_gath[seg].seg_len); 1356 } 1357 1358 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1359 AHA_CCB_OFF(ccb) + offsetof(struct aha_ccb, scat_gath), 1360 ccb->data_addr); 1361 ltophys(ccb->dmamap_xfer->dm_nsegs * 1362 sizeof(struct aha_scat_gath), ccb->data_length); 1363 } else { 1364 /* 1365 * No data xfer, use non S/G values. 1366 */ 1367 ltophys(0, ccb->data_addr); 1368 ltophys(0, ccb->data_length); 1369 } 1370 1371 ccb->data_out = 0; 1372 ccb->data_in = 0; 1373 ccb->target = sc_link->scsipi_scsi.target; 1374 ccb->lun = sc_link->scsipi_scsi.lun; 1375 ccb->req_sense_length = sizeof(ccb->scsi_sense); 1376 ccb->host_stat = 0x00; 1377 ccb->target_stat = 0x00; 1378 ccb->link_id = 0; 1379 ltophys(0, ccb->link_addr); 1380 1381 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1382 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 1383 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1384 1385 s = splbio(); 1386 aha_queue_ccb(sc, ccb); 1387 splx(s); 1388 1389 /* 1390 * Usually return SUCCESSFULLY QUEUED 1391 */ 1392 SC_DEBUG(sc_link, SDEV_DB3, ("cmd_sent\n")); 1393 if ((flags & SCSI_POLL) == 0) 1394 return (SUCCESSFULLY_QUEUED); 1395 1396 /* 1397 * If we can't use interrupts, poll on completion 1398 */ 1399 if (aha_poll(sc, xs, ccb->timeout)) { 1400 aha_timeout(ccb); 1401 if (aha_poll(sc, xs, ccb->timeout)) 1402 aha_timeout(ccb); 1403 } 1404 return (COMPLETE); 1405 1406 bad: 1407 xs->error = XS_DRIVER_STUFFUP; 1408 aha_free_ccb(sc, ccb); 1409 return (COMPLETE); 1410 } 1411 1412 /* 1413 * Poll a particular unit, looking for a particular xs 1414 */ 1415 int 1416 aha_poll(sc, xs, count) 1417 struct aha_softc *sc; 1418 struct scsipi_xfer *xs; 1419 int count; 1420 { 1421 bus_space_tag_t iot = sc->sc_iot; 1422 bus_space_handle_t ioh = sc->sc_ioh; 1423 1424 /* timeouts are in msec, so we loop in 1000 usec cycles */ 1425 while (count) { 1426 /* 1427 * If we had interrupts enabled, would we 1428 * have got an interrupt? 1429 */ 1430 if (bus_space_read_1(iot, ioh, AHA_INTR_PORT) & AHA_INTR_ANYINTR) 1431 aha_intr(sc); 1432 if (xs->flags & ITSDONE) 1433 return (0); 1434 delay(1000); /* only happens in boot so ok */ 1435 count--; 1436 } 1437 return (1); 1438 } 1439 1440 void 1441 aha_timeout(arg) 1442 void *arg; 1443 { 1444 struct aha_ccb *ccb = arg; 1445 struct scsipi_xfer *xs = ccb->xs; 1446 struct scsipi_link *sc_link = xs->sc_link; 1447 struct aha_softc *sc = sc_link->adapter_softc; 1448 int s; 1449 1450 scsi_print_addr(sc_link); 1451 printf("timed out"); 1452 1453 s = splbio(); 1454 1455 #ifdef AHADIAG 1456 /* 1457 * If The ccb's mbx is not free, then the board has gone south? 1458 */ 1459 aha_collect_mbo(sc); 1460 if (ccb->flags & CCB_SENDING) { 1461 printf("%s: not taking commands!\n", sc->sc_dev.dv_xname); 1462 Debugger(); 1463 } 1464 #endif 1465 1466 /* 1467 * If it has been through before, then 1468 * a previous abort has failed, don't 1469 * try abort again 1470 */ 1471 if (ccb->flags & CCB_ABORT) { 1472 /* abort timed out */ 1473 printf(" AGAIN\n"); 1474 /* XXX Must reset! */ 1475 } else { 1476 /* abort the operation that has timed out */ 1477 printf("\n"); 1478 ccb->xs->error = XS_TIMEOUT; 1479 ccb->timeout = AHA_ABORT_TIMEOUT; 1480 ccb->flags |= CCB_ABORT; 1481 aha_queue_ccb(sc, ccb); 1482 } 1483 1484 splx(s); 1485 } 1486
Indexes created Wed Sep 24 02:09:48 GMT 2025