aha.c revision 1.65
1 /* $NetBSD: aha.c,v 1.65 2021/08/07 16:19:11 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Originally written by Julian Elischer (julian (at) tfs.com) 35 * for TRW Financial Systems for use under the MACH(2.5) operating system. 36 * 37 * TRW Financial Systems, in accordance with their agreement with Carnegie 38 * Mellon University, makes this software available to CMU to distribute 39 * or use in any manner that they see fit as long as this message is kept with 40 * the software. For this reason TFS also grants any other persons or 41 * organisations permission to use or modify this software. 42 * 43 * TFS supplies this software to be publicly redistributed 44 * on the understanding that TFS is not responsible for the correct 45 * functioning of this software in any circumstances. 46 */ 47 48 #include <sys/cdefs.h> 49 __KERNEL_RCSID(0, "$NetBSD: aha.c,v 1.65 2021/08/07 16:19:11 thorpej Exp $"); 50 51 #include "opt_ddb.h" 52 53 #undef AHADIAG 54 55 #include <sys/param.h> 56 #include <sys/systm.h> 57 #include <sys/callout.h> 58 #include <sys/kernel.h> 59 #include <sys/errno.h> 60 #include <sys/ioctl.h> 61 #include <sys/device.h> 62 #include <sys/malloc.h> 63 #include <sys/buf.h> 64 #include <sys/proc.h> 65 66 #include <sys/bus.h> 67 #include <sys/intr.h> 68 69 #include <dev/scsipi/scsi_all.h> 70 #include <dev/scsipi/scsipi_all.h> 71 #include <dev/scsipi/scsiconf.h> 72 73 #include <dev/ic/ahareg.h> 74 #include <dev/ic/ahavar.h> 75 76 #ifndef DDB 77 #define Debugger() panic("should call debugger here (aha1542.c)") 78 #endif /* ! DDB */ 79 80 #define AHA_MAXXFER ((AHA_NSEG - 1) << PGSHIFT) 81 82 #ifdef AHADEBUG 83 int aha_debug = 1; 84 #endif /* AHADEBUG */ 85 86 static int aha_cmd(bus_space_tag_t, bus_space_handle_t, 87 struct aha_softc *, int, u_char *, int, u_char *); 88 static void aha_finish_ccbs(struct aha_softc *); 89 static void aha_free_ccb(struct aha_softc *, struct aha_ccb *); 90 static int aha_init_ccb(struct aha_softc *, struct aha_ccb *); 91 static struct aha_ccb *aha_get_ccb(struct aha_softc *); 92 static struct aha_ccb *aha_ccb_phys_kv(struct aha_softc *, u_long); 93 static void aha_queue_ccb(struct aha_softc *, struct aha_ccb *); 94 static void aha_collect_mbo(struct aha_softc *); 95 static void aha_start_ccbs(struct aha_softc *); 96 static void aha_done(struct aha_softc *, struct aha_ccb *); 97 static int aha_init(struct aha_softc *); 98 static void aha_inquire_setup_information(struct aha_softc *); 99 static void ahaminphys(struct buf *); 100 static void aha_scsipi_request(struct scsipi_channel *, 101 scsipi_adapter_req_t, void *); 102 static int aha_poll(struct aha_softc *, struct scsipi_xfer *, int); 103 static void aha_timeout(void *arg); 104 static int aha_create_ccbs(struct aha_softc *, struct aha_ccb *, int); 105 106 #define AHA_RESET_TIMEOUT 2000 /* time to wait for reset (mSec) */ 107 #define AHA_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 108 109 /* 110 * aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 111 * 112 * Activate Adapter command 113 * icnt: number of args (outbound bytes including opcode) 114 * ibuf: argument buffer 115 * ocnt: number of expected returned bytes 116 * obuf: result buffer 117 * wait: number of seconds to wait for response 118 * 119 * Performs an adapter command through the ports. Not to be confused with a 120 * scsi command, which is read in via the DMA; one of the adapter commands 121 * tells it to read in a scsi command. 122 */ 123 static int 124 aha_cmd(bus_space_tag_t iot, bus_space_handle_t ioh, struct aha_softc *sc, 125 int icnt, u_char *ibuf, int ocnt, u_char *obuf) 126 { 127 const char *name; 128 int i; 129 int wait; 130 u_char sts; 131 u_char opcode = ibuf[0]; 132 133 if (sc != NULL) 134 name = device_xname(sc->sc_dev); 135 else 136 name = "(aha probe)"; 137 138 /* 139 * Calculate a reasonable timeout for the command. 140 */ 141 switch (opcode) { 142 case AHA_INQUIRE_DEVICES: 143 wait = 90 * 20000; 144 break; 145 default: 146 wait = 1 * 20000; 147 break; 148 } 149 150 /* 151 * Wait for the adapter to go idle, unless it's one of 152 * the commands which don't need this 153 */ 154 if (opcode != AHA_MBO_INTR_EN) { 155 for (i = 20000; i; i--) { /* 1 sec? */ 156 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 157 if (sts & AHA_STAT_IDLE) 158 break; 159 delay(50); 160 } 161 if (!i) { 162 printf("%s: aha_cmd, host not idle(0x%x)\n", 163 name, sts); 164 return (1); 165 } 166 } 167 /* 168 * Now that it is idle, if we expect output, preflush the 169 * queue feeding to us. 170 */ 171 if (ocnt) { 172 while ((bus_space_read_1(iot, ioh, AHA_STAT_PORT)) 173 & AHA_STAT_DF) 174 bus_space_read_1(iot, ioh, AHA_DATA_PORT); 175 } 176 /* 177 * Output the command and the number of arguments given 178 * for each byte, first check the port is empty. 179 */ 180 while (icnt--) { 181 for (i = wait; i; i--) { 182 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 183 if (!(sts & AHA_STAT_CDF)) 184 break; 185 delay(50); 186 } 187 if (!i) { 188 if (opcode != AHA_INQUIRE_REVISION) 189 printf("%s: aha_cmd, cmd/data port full\n", 190 name); 191 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, 192 AHA_CTRL_SRST); 193 return (1); 194 } 195 bus_space_write_1(iot, ioh, AHA_CMD_PORT, *ibuf++); 196 } 197 /* 198 * If we expect input, loop that many times, each time, 199 * looking for the data register to have valid data 200 */ 201 while (ocnt--) { 202 for (i = wait; i; i--) { 203 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 204 if (sts & AHA_STAT_DF) 205 break; 206 delay(50); 207 } 208 if (!i) { 209 if (opcode != AHA_INQUIRE_REVISION) 210 printf("%s: aha_cmd, cmd/data port empty %d\n", 211 name, ocnt); 212 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, 213 AHA_CTRL_SRST); 214 return (1); 215 } 216 *obuf++ = bus_space_read_1(iot, ioh, AHA_DATA_PORT); 217 } 218 /* 219 * Wait for the board to report a finished instruction. 220 * We may get an extra interrupt for the HACC signal, but this is 221 * unimportant. 222 */ 223 if (opcode != AHA_MBO_INTR_EN) { 224 for (i = 20000; i; i--) { /* 1 sec? */ 225 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 226 /* XXX Need to save this in the interrupt handler? */ 227 if (sts & AHA_INTR_HACC) 228 break; 229 delay(50); 230 } 231 if (!i) { 232 printf("%s: aha_cmd, host not finished(0x%x)\n", 233 name, sts); 234 return (1); 235 } 236 } 237 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 238 return (0); 239 } 240 241 void 242 aha_attach(struct aha_softc *sc, struct aha_probe_data *apd) 243 { 244 struct scsipi_adapter *adapt = &sc->sc_adapter; 245 struct scsipi_channel *chan = &sc->sc_channel; 246 247 TAILQ_INIT(&sc->sc_free_ccb); 248 TAILQ_INIT(&sc->sc_waiting_ccb); 249 250 /* 251 * Fill in the scsipi_adapter. 252 */ 253 memset(adapt, 0, sizeof(*adapt)); 254 adapt->adapt_dev = sc->sc_dev; 255 adapt->adapt_nchannels = 1; 256 /* adapt_openings initialized below */ 257 /* adapt_max_periph initialized below */ 258 adapt->adapt_request = aha_scsipi_request; 259 adapt->adapt_minphys = ahaminphys; 260 261 /* 262 * Fill in the scsipi_channel. 263 */ 264 memset(chan, 0, sizeof(*chan)); 265 chan->chan_adapter = adapt; 266 chan->chan_bustype = &scsi_bustype; 267 chan->chan_channel = 0; 268 chan->chan_ntargets = 8; 269 chan->chan_nluns = 8; 270 chan->chan_id = apd->sc_scsi_dev; 271 272 aha_inquire_setup_information(sc); 273 if (aha_init(sc) != 0) { 274 /* Error during initialization! */ 275 return; 276 } 277 278 /* 279 * ask the adapter what subunits are present 280 */ 281 config_found(sc->sc_dev, &sc->sc_channel, scsiprint, CFARGS_NONE); 282 } 283 284 static void 285 aha_finish_ccbs(struct aha_softc *sc) 286 { 287 struct aha_mbx_in *wmbi; 288 struct aha_ccb *ccb; 289 int i; 290 291 wmbi = wmbx->tmbi; 292 293 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 294 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 295 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 296 297 if (wmbi->stat == AHA_MBI_FREE) { 298 for (i = 0; i < AHA_MBX_SIZE; i++) { 299 if (wmbi->stat != AHA_MBI_FREE) { 300 printf("%s: mbi not in round-robin order\n", 301 device_xname(sc->sc_dev)); 302 goto AGAIN; 303 } 304 aha_nextmbx(wmbi, wmbx, mbi); 305 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 306 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 307 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 308 } 309 #ifdef AHADIAGnot 310 printf("%s: mbi interrupt with no full mailboxes\n", 311 device_xname(sc->sc_dev)); 312 #endif 313 return; 314 } 315 316 AGAIN: 317 do { 318 ccb = aha_ccb_phys_kv(sc, phystol(wmbi->ccb_addr)); 319 if (!ccb) { 320 printf("%s: bad mbi ccb pointer; skipping\n", 321 device_xname(sc->sc_dev)); 322 goto next; 323 } 324 325 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 326 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 327 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 328 329 #ifdef AHADEBUG 330 if (aha_debug) { 331 u_char *cp = ccb->scsi_cmd; 332 printf("op=%x %x %x %x %x %x\n", 333 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 334 printf("stat %x for mbi addr = %p, ", 335 wmbi->stat, wmbi); 336 printf("ccb addr = %p\n", ccb); 337 } 338 #endif /* AHADEBUG */ 339 340 switch (wmbi->stat) { 341 case AHA_MBI_OK: 342 case AHA_MBI_ERROR: 343 if ((ccb->flags & CCB_ABORT) != 0) { 344 /* 345 * If we already started an abort, wait for it 346 * to complete before clearing the CCB. We 347 * could instead just clear CCB_SENDING, but 348 * what if the mailbox was already received? 349 * The worst that happens here is that we clear 350 * the CCB a bit later than we need to. BFD. 351 */ 352 goto next; 353 } 354 break; 355 356 case AHA_MBI_ABORT: 357 case AHA_MBI_UNKNOWN: 358 /* 359 * Even if the CCB wasn't found, we clear it anyway. 360 * See preceding comment. 361 */ 362 break; 363 364 default: 365 printf("%s: bad mbi status %02x; skipping\n", 366 device_xname(sc->sc_dev), wmbi->stat); 367 goto next; 368 } 369 370 callout_stop(&ccb->xs->xs_callout); 371 aha_done(sc, ccb); 372 373 next: 374 wmbi->stat = AHA_MBI_FREE; 375 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 376 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 377 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 378 aha_nextmbx(wmbi, wmbx, mbi); 379 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 380 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 381 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 382 } while (wmbi->stat != AHA_MBI_FREE); 383 384 wmbx->tmbi = wmbi; 385 } 386 387 /* 388 * Catch an interrupt from the adaptor 389 */ 390 int 391 aha_intr(void *arg) 392 { 393 struct aha_softc *sc = arg; 394 bus_space_tag_t iot = sc->sc_iot; 395 bus_space_handle_t ioh = sc->sc_ioh; 396 u_char sts; 397 398 #ifdef AHADEBUG 399 printf("%s: aha_intr ", device_xname(sc->sc_dev)); 400 #endif /*AHADEBUG */ 401 402 /* 403 * First acknowledge the interrupt, Then if it's not telling about 404 * a completed operation just return. 405 */ 406 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 407 if ((sts & AHA_INTR_ANYINTR) == 0) 408 return (0); 409 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 410 411 #ifdef AHADIAG 412 /* Make sure we clear CCB_SENDING before finishing a CCB. */ 413 aha_collect_mbo(sc); 414 #endif 415 416 /* Mail box out empty? */ 417 if (sts & AHA_INTR_MBOA) { 418 struct aha_toggle toggle; 419 420 toggle.cmd.opcode = AHA_MBO_INTR_EN; 421 toggle.cmd.enable = 0; 422 aha_cmd(iot, ioh, sc, 423 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 424 0, (u_char *)0); 425 aha_start_ccbs(sc); 426 } 427 428 /* Mail box in full? */ 429 if (sts & AHA_INTR_MBIF) 430 aha_finish_ccbs(sc); 431 432 return (1); 433 } 434 435 static inline void 436 aha_reset_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 437 { 438 439 ccb->flags = 0; 440 } 441 442 /* 443 * A ccb is put onto the free list. 444 */ 445 static void 446 aha_free_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 447 { 448 int s; 449 450 s = splbio(); 451 aha_reset_ccb(sc, ccb); 452 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 453 splx(s); 454 } 455 456 static int 457 aha_init_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 458 { 459 bus_dma_tag_t dmat = sc->sc_dmat; 460 int hashnum, error; 461 462 /* 463 * Create the DMA map for this CCB. 464 */ 465 error = bus_dmamap_create(dmat, AHA_MAXXFER, AHA_NSEG, AHA_MAXXFER, 466 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 467 if (error) { 468 aprint_error_dev(sc->sc_dev, 469 "unable to create ccb DMA map, error = %d\n", 470 error); 471 return (error); 472 } 473 474 /* 475 * put in the phystokv hash table 476 * Never gets taken out. 477 */ 478 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 479 AHA_CCB_OFF(ccb); 480 hashnum = CCB_HASH(ccb->hashkey); 481 ccb->nexthash = sc->sc_ccbhash[hashnum]; 482 sc->sc_ccbhash[hashnum] = ccb; 483 aha_reset_ccb(sc, ccb); 484 return (0); 485 } 486 487 /* 488 * Create a set of ccbs and add them to the free list. Called once 489 * by aha_init(). We return the number of CCBs successfully created. 490 */ 491 static int 492 aha_create_ccbs(struct aha_softc *sc, struct aha_ccb *ccbstore, int count) 493 { 494 struct aha_ccb *ccb; 495 int i, error; 496 497 memset(ccbstore, 0, sizeof(struct aha_ccb) * count); 498 for (i = 0; i < count; i++) { 499 ccb = &ccbstore[i]; 500 if ((error = aha_init_ccb(sc, ccb)) != 0) { 501 aprint_error_dev(sc->sc_dev, 502 "unable to initialize ccb, error = %d\n", 503 error); 504 goto out; 505 } 506 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 507 } 508 out: 509 return (i); 510 } 511 512 /* 513 * Get a free ccb 514 * 515 * If there are none, see if we can allocate a new one. If so, put it in 516 * the hash table too otherwise either return an error or sleep. 517 */ 518 struct aha_ccb * 519 aha_get_ccb(struct aha_softc *sc) 520 { 521 struct aha_ccb *ccb; 522 int s; 523 524 s = splbio(); 525 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 526 if (ccb != NULL) { 527 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 528 ccb->flags |= CCB_ALLOC; 529 } 530 splx(s); 531 return (ccb); 532 } 533 534 /* 535 * Given a physical address, find the ccb that it corresponds to. 536 */ 537 static struct aha_ccb * 538 aha_ccb_phys_kv(struct aha_softc *sc, u_long ccb_phys) 539 { 540 int hashnum = CCB_HASH(ccb_phys); 541 struct aha_ccb *ccb = sc->sc_ccbhash[hashnum]; 542 543 while (ccb) { 544 if (ccb->hashkey == ccb_phys) 545 break; 546 ccb = ccb->nexthash; 547 } 548 return (ccb); 549 } 550 551 /* 552 * Queue a CCB to be sent to the controller, and send it if possible. 553 */ 554 static void 555 aha_queue_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 556 { 557 558 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 559 aha_start_ccbs(sc); 560 } 561 562 /* 563 * Garbage collect mailboxes that are no longer in use. 564 */ 565 static void 566 aha_collect_mbo(struct aha_softc *sc) 567 { 568 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 569 #ifdef AHADIAG 570 struct aha_ccb *ccb; 571 #endif 572 573 wmbo = wmbx->cmbo; 574 575 while (sc->sc_mbofull > 0) { 576 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 577 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 578 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 579 if (wmbo->cmd != AHA_MBO_FREE) 580 break; 581 582 #ifdef AHADIAG 583 ccb = aha_ccb_phys_kv(sc, phystol(wmbo->ccb_addr)); 584 ccb->flags &= ~CCB_SENDING; 585 #endif 586 587 --sc->sc_mbofull; 588 aha_nextmbx(wmbo, wmbx, mbo); 589 } 590 591 wmbx->cmbo = wmbo; 592 } 593 594 /* 595 * Send as many CCBs as we have empty mailboxes for. 596 */ 597 static void 598 aha_start_ccbs(struct aha_softc *sc) 599 { 600 bus_space_tag_t iot = sc->sc_iot; 601 bus_space_handle_t ioh = sc->sc_ioh; 602 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 603 struct aha_ccb *ccb; 604 605 wmbo = wmbx->tmbo; 606 607 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 608 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 609 aha_collect_mbo(sc); 610 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 611 struct aha_toggle toggle; 612 613 toggle.cmd.opcode = AHA_MBO_INTR_EN; 614 toggle.cmd.enable = 1; 615 aha_cmd(iot, ioh, sc, 616 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 617 0, (u_char *)0); 618 break; 619 } 620 } 621 622 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 623 #ifdef AHADIAG 624 ccb->flags |= CCB_SENDING; 625 #endif 626 627 /* Link ccb to mbo. */ 628 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 629 AHA_CCB_OFF(ccb), wmbo->ccb_addr); 630 if (ccb->flags & CCB_ABORT) 631 wmbo->cmd = AHA_MBO_ABORT; 632 else 633 wmbo->cmd = AHA_MBO_START; 634 635 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 636 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 637 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 638 639 /* Tell the card to poll immediately. */ 640 bus_space_write_1(iot, ioh, AHA_CMD_PORT, AHA_START_SCSI); 641 642 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 643 callout_reset(&ccb->xs->xs_callout, 644 mstohz(ccb->timeout), aha_timeout, ccb); 645 646 ++sc->sc_mbofull; 647 aha_nextmbx(wmbo, wmbx, mbo); 648 } 649 650 wmbx->tmbo = wmbo; 651 } 652 653 /* 654 * We have a ccb which has been processed by the 655 * adaptor, now we look to see how the operation 656 * went. Wake up the owner if waiting 657 */ 658 static void 659 aha_done(struct aha_softc *sc, struct aha_ccb *ccb) 660 { 661 bus_dma_tag_t dmat = sc->sc_dmat; 662 struct scsi_sense_data *s1, *s2; 663 struct scsipi_xfer *xs = ccb->xs; 664 665 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("aha_done\n")); 666 667 /* 668 * If we were a data transfer, unload the map that described 669 * the data buffer. 670 */ 671 if (xs->datalen) { 672 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 673 ccb->dmamap_xfer->dm_mapsize, 674 (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD : 675 BUS_DMASYNC_POSTWRITE); 676 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 677 } 678 679 /* 680 * Otherwise, put the results of the operation 681 * into the xfer and call whoever started it 682 */ 683 #ifdef AHADIAG 684 if (ccb->flags & CCB_SENDING) { 685 printf("%s: exiting ccb still in transit!\n", 686 device_xname(sc->sc_dev)); 687 Debugger(); 688 return; 689 } 690 #endif 691 if ((ccb->flags & CCB_ALLOC) == 0) { 692 printf("%s: exiting ccb not allocated!\n", 693 device_xname(sc->sc_dev)); 694 Debugger(); 695 return; 696 } 697 if (xs->error == XS_NOERROR) { 698 if (ccb->host_stat != AHA_OK) { 699 switch (ccb->host_stat) { 700 case AHA_SEL_TIMEOUT: /* No response */ 701 xs->error = XS_SELTIMEOUT; 702 break; 703 default: /* Other scsi protocol messes */ 704 printf("%s: host_stat %x\n", 705 device_xname(sc->sc_dev), ccb->host_stat); 706 xs->error = XS_DRIVER_STUFFUP; 707 break; 708 } 709 } else if (ccb->target_stat != SCSI_OK) { 710 switch (ccb->target_stat) { 711 case SCSI_CHECK: 712 s1 = (struct scsi_sense_data *) 713 (((char *)(&ccb->scsi_cmd)) + 714 ccb->scsi_cmd_length); 715 s2 = &xs->sense.scsi_sense; 716 *s2 = *s1; 717 xs->error = XS_SENSE; 718 break; 719 case SCSI_BUSY: 720 xs->error = XS_BUSY; 721 break; 722 default: 723 printf("%s: target_stat %x\n", 724 device_xname(sc->sc_dev), ccb->target_stat); 725 xs->error = XS_DRIVER_STUFFUP; 726 break; 727 } 728 } else 729 xs->resid = 0; 730 } 731 aha_free_ccb(sc, ccb); 732 scsipi_done(xs); 733 } 734 735 /* 736 * Find the board and find its irq/drq 737 */ 738 int 739 aha_find(bus_space_tag_t iot, bus_space_handle_t ioh, 740 struct aha_probe_data *sc) 741 { 742 int i; 743 u_char sts; 744 struct aha_config config; 745 int irq, drq; 746 747 /* 748 * assume invalid status means the board is not present. 749 */ 750 751 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 752 if (sts == 0) 753 return (0); 754 if ((sts & (AHA_STAT_STST|AHA_STAT_RSVD|AHA_STAT_CDF)) != 0) 755 return (0); 756 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 757 if ((sts & AHA_INTR_RSVD) != 0) 758 return (0); 759 760 /* 761 * reset board, If it doesn't respond, assume 762 * that it's not there.. good for the probe 763 */ 764 765 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, 766 AHA_CTRL_HRST | AHA_CTRL_SRST); 767 768 delay(100); 769 for (i = AHA_RESET_TIMEOUT; i; i--) { 770 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 771 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 772 break; 773 delay(1000); /* calibrated in msec */ 774 } 775 if (!i) { 776 #ifdef AHADEBUG 777 if (aha_debug) 778 printf("aha_find: No answer from adaptec board\n"); 779 #endif /* AHADEBUG */ 780 return (0); 781 } 782 783 /* 784 * setup DMA channel from jumpers and save int 785 * level 786 */ 787 delay(1000); /* for Bustek 545 */ 788 config.cmd.opcode = AHA_INQUIRE_CONFIG; 789 aha_cmd(iot, ioh, (struct aha_softc *)0, 790 sizeof(config.cmd), (u_char *)&config.cmd, 791 sizeof(config.reply), (u_char *)&config.reply); 792 switch (config.reply.chan) { 793 case EISADMA: 794 drq = -1; 795 break; 796 case CHAN0: 797 drq = 0; 798 break; 799 case CHAN5: 800 drq = 5; 801 break; 802 case CHAN6: 803 drq = 6; 804 break; 805 case CHAN7: 806 drq = 7; 807 break; 808 default: 809 printf("aha_find: illegal drq setting %x\n", config.reply.chan); 810 return (0); 811 } 812 813 switch (config.reply.intr) { 814 case INT9: 815 irq = 9; 816 break; 817 case INT10: 818 irq = 10; 819 break; 820 case INT11: 821 irq = 11; 822 break; 823 case INT12: 824 irq = 12; 825 break; 826 case INT14: 827 irq = 14; 828 break; 829 case INT15: 830 irq = 15; 831 break; 832 default: 833 printf("aha_find: illegal irq setting %x\n", config.reply.intr); 834 return (0); 835 } 836 837 if (sc) { 838 sc->sc_irq = irq; 839 sc->sc_drq = drq; 840 sc->sc_scsi_dev = config.reply.scsi_dev; 841 } 842 843 return (1); 844 } 845 846 /* 847 * Start the board, ready for normal operation 848 */ 849 static int 850 aha_init(struct aha_softc *sc) 851 { 852 bus_space_tag_t iot = sc->sc_iot; 853 bus_space_handle_t ioh = sc->sc_ioh; 854 bus_dma_segment_t seg; 855 struct aha_devices devices; 856 struct aha_setup setup; 857 struct aha_mailbox mailbox; 858 int error, i, j, initial_ccbs, rseg; 859 860 /* 861 * XXX 862 * If we are a 1542C or later, disable the extended BIOS so that the 863 * mailbox interface is unlocked. 864 * No need to check the extended BIOS flags as some of the 865 * extensions that cause us problems are not flagged in that byte. 866 */ 867 if (!strncmp(sc->sc_model, "1542C", 5)) { 868 struct aha_extbios extbios; 869 struct aha_unlock unlock; 870 871 printf("%s: unlocking mailbox interface\n", 872 device_xname(sc->sc_dev)); 873 extbios.cmd.opcode = AHA_EXT_BIOS; 874 aha_cmd(iot, ioh, sc, 875 sizeof(extbios.cmd), (u_char *)&extbios.cmd, 876 sizeof(extbios.reply), (u_char *)&extbios.reply); 877 878 #ifdef AHADEBUG 879 printf("%s: flags=%02x, mailboxlock=%02x\n", 880 device_xname(sc->sc_dev), 881 extbios.reply.flags, extbios.reply.mailboxlock); 882 #endif /* AHADEBUG */ 883 884 unlock.cmd.opcode = AHA_MBX_ENABLE; 885 unlock.cmd.junk = 0; 886 unlock.cmd.magic = extbios.reply.mailboxlock; 887 aha_cmd(iot, ioh, sc, 888 sizeof(unlock.cmd), (u_char *)&unlock.cmd, 889 0, (u_char *)0); 890 } 891 892 #if 0 893 /* 894 * Change the bus on/off times to not clash with other DMA users. 895 */ 896 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); 897 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); 898 #endif 899 900 /* Inquire Installed Devices (to force synchronous negotiation). */ 901 devices.cmd.opcode = AHA_INQUIRE_DEVICES; 902 aha_cmd(iot, ioh, sc, 903 sizeof(devices.cmd), (u_char *)&devices.cmd, 904 sizeof(devices.reply), (u_char *)&devices.reply); 905 906 /* Count installed units */ 907 initial_ccbs = 0; 908 for (i = 0; i < 8; i++) { 909 for (j = 0; j < 8; j++) { 910 if (((devices.reply.lun_map[i] >> j) & 1) == 1) 911 initial_ccbs += 1; 912 } 913 } 914 initial_ccbs *= 2; 915 if (initial_ccbs > AHA_CCB_MAX) 916 initial_ccbs = AHA_CCB_MAX; 917 if (initial_ccbs == 0) /* yes, this can happen */ 918 initial_ccbs = 2; 919 920 /* Obtain setup information from. */ 921 setup.cmd.opcode = AHA_INQUIRE_SETUP; 922 setup.cmd.len = sizeof(setup.reply); 923 aha_cmd(iot, ioh, sc, 924 sizeof(setup.cmd), (u_char *)&setup.cmd, 925 sizeof(setup.reply), (u_char *)&setup.reply); 926 927 printf("%s: %s, %s\n", 928 device_xname(sc->sc_dev), 929 setup.reply.sync_neg ? "sync" : "async", 930 setup.reply.parity ? "parity" : "no parity"); 931 932 for (i = 0; i < 8; i++) { 933 if (!setup.reply.sync[i].valid || 934 (!setup.reply.sync[i].offset 935 && !setup.reply.sync[i].period)) 936 continue; 937 printf("%s targ %d: sync, offset %d, period %dnsec\n", 938 device_xname(sc->sc_dev), i, setup.reply.sync[i].offset, 939 setup.reply.sync[i].period * 50 + 200); 940 } 941 942 /* 943 * Allocate the mailbox and control blocks. 944 */ 945 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct aha_control), 946 PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 947 aprint_error_dev(sc->sc_dev, 948 "unable to allocate control structures, " 949 "error = %d\n", error); 950 return (error); 951 } 952 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 953 sizeof(struct aha_control), (void **)&sc->sc_control, 954 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 955 aprint_error_dev(sc->sc_dev, 956 "unable to map control structures, error = %d\n", error); 957 return (error); 958 } 959 960 /* 961 * Create and load the DMA map used for the mailbox and 962 * control blocks. 963 */ 964 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct aha_control), 965 1, sizeof(struct aha_control), 0, BUS_DMA_NOWAIT, 966 &sc->sc_dmamap_control)) != 0) { 967 aprint_error_dev(sc->sc_dev, 968 "unable to create control DMA map, error = %d\n", error); 969 return (error); 970 } 971 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 972 sc->sc_control, sizeof(struct aha_control), NULL, 973 BUS_DMA_NOWAIT)) != 0) { 974 aprint_error_dev(sc->sc_dev, 975 "unable to load control DMA map, error = %d\n", error); 976 return (error); 977 } 978 979 /* 980 * Initialize the control blocks. 981 */ 982 i = aha_create_ccbs(sc, sc->sc_control->ac_ccbs, initial_ccbs); 983 if (i == 0) { 984 aprint_error_dev(sc->sc_dev, 985 "unable to create control blocks\n"); 986 return (ENOMEM); 987 } else if (i != initial_ccbs) { 988 printf("%s: WARNING: only %d of %d control blocks created\n", 989 device_xname(sc->sc_dev), i, initial_ccbs); 990 } 991 992 sc->sc_adapter.adapt_openings = i; 993 sc->sc_adapter.adapt_max_periph = sc->sc_adapter.adapt_openings; 994 995 /* 996 * Set up initial mail box for round-robin operation. 997 */ 998 for (i = 0; i < AHA_MBX_SIZE; i++) { 999 wmbx->mbo[i].cmd = AHA_MBO_FREE; 1000 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1001 AHA_MBO_OFF(&wmbx->mbo[i]), sizeof(struct aha_mbx_out), 1002 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1003 wmbx->mbi[i].stat = AHA_MBI_FREE; 1004 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1005 AHA_MBI_OFF(&wmbx->mbi[i]), sizeof(struct aha_mbx_in), 1006 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1007 } 1008 wmbx->cmbo = wmbx->tmbo = &wmbx->mbo[0]; 1009 wmbx->tmbi = &wmbx->mbi[0]; 1010 sc->sc_mbofull = 0; 1011 1012 /* Initialize mail box. */ 1013 mailbox.cmd.opcode = AHA_MBX_INIT; 1014 mailbox.cmd.nmbx = AHA_MBX_SIZE; 1015 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1016 offsetof(struct aha_control, ac_mbx), mailbox.cmd.addr); 1017 aha_cmd(iot, ioh, sc, 1018 sizeof(mailbox.cmd), (u_char *)&mailbox.cmd, 1019 0, (u_char *)0); 1020 return (0); 1021 } 1022 1023 static void 1024 aha_inquire_setup_information(struct aha_softc *sc) 1025 { 1026 bus_space_tag_t iot = sc->sc_iot; 1027 bus_space_handle_t ioh = sc->sc_ioh; 1028 struct aha_revision revision; 1029 u_char sts; 1030 int i; 1031 char *p; 1032 1033 strcpy(sc->sc_model, "unknown"); 1034 1035 /* 1036 * Assume we have a board at this stage, do an adapter inquire 1037 * to find out what type of controller it is. If the command 1038 * fails, we assume it's either a crusty board or an old 1542 1039 * clone, and skip the board-specific stuff. 1040 */ 1041 revision.cmd.opcode = AHA_INQUIRE_REVISION; 1042 if (aha_cmd(iot, ioh, sc, 1043 sizeof(revision.cmd), (u_char *)&revision.cmd, 1044 sizeof(revision.reply), (u_char *)&revision.reply)) { 1045 /* 1046 * aha_cmd() already started the reset. It's not clear we 1047 * even need to bother here. 1048 */ 1049 for (i = AHA_RESET_TIMEOUT; i; i--) { 1050 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 1051 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 1052 break; 1053 delay(1000); 1054 } 1055 if (!i) { 1056 #ifdef AHADEBUG 1057 printf("aha_init: soft reset failed\n"); 1058 #endif /* AHADEBUG */ 1059 return; 1060 } 1061 #ifdef AHADEBUG 1062 printf("aha_init: inquire command failed\n"); 1063 #endif /* AHADEBUG */ 1064 goto noinquire; 1065 } 1066 1067 #ifdef AHADEBUG 1068 printf("%s: inquire %x, %x, %x, %x\n", 1069 device_xname(sc->sc_dev), 1070 revision.reply.boardid, revision.reply.spec_opts, 1071 revision.reply.revision_1, revision.reply.revision_2); 1072 #endif /* AHADEBUG */ 1073 1074 switch (revision.reply.boardid) { 1075 case BOARD_1540_16HEAD_BIOS: 1076 case BOARD_1540_64HEAD_BIOS: 1077 case BOARD_1540: 1078 strcpy(sc->sc_model, "1540"); 1079 break; 1080 case BOARD_1542: 1081 strcpy(sc->sc_model, "1540A/1542A/1542B"); 1082 break; 1083 case BOARD_1640: 1084 strcpy(sc->sc_model, "1640"); 1085 break; 1086 case BOARD_1740: 1087 strcpy(sc->sc_model, "1740"); 1088 break; 1089 case BOARD_1542C: 1090 strcpy(sc->sc_model, "1542C"); 1091 break; 1092 case BOARD_1542CF: 1093 strcpy(sc->sc_model, "1542CF"); 1094 break; 1095 case BOARD_1542CP: 1096 strcpy(sc->sc_model, "1542CP"); 1097 break; 1098 } 1099 1100 p = sc->sc_firmware; 1101 *p++ = revision.reply.revision_1; 1102 *p++ = '.'; 1103 *p++ = revision.reply.revision_2; 1104 *p = '\0'; 1105 1106 noinquire: 1107 printf("%s: model AHA-%s, firmware %s\n", 1108 device_xname(sc->sc_dev), 1109 sc->sc_model, sc->sc_firmware); 1110 } 1111 1112 static void 1113 ahaminphys(struct buf *bp) 1114 { 1115 1116 if (bp->b_bcount > AHA_MAXXFER) 1117 bp->b_bcount = AHA_MAXXFER; 1118 minphys(bp); 1119 } 1120 1121 /* 1122 * start a scsi operation given the command and the data address. Also needs 1123 * the unit, target and lu. 1124 */ 1125 1126 static void 1127 aha_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 1128 void *arg) 1129 { 1130 struct scsipi_xfer *xs; 1131 struct scsipi_periph *periph; 1132 struct aha_softc *sc = device_private(chan->chan_adapter->adapt_dev); 1133 bus_dma_tag_t dmat = sc->sc_dmat; 1134 struct aha_ccb *ccb; 1135 int error, seg, flags, s; 1136 1137 1138 switch (req) { 1139 case ADAPTER_REQ_RUN_XFER: 1140 xs = arg; 1141 periph = xs->xs_periph; 1142 flags = xs->xs_control; 1143 1144 SC_DEBUG(periph, SCSIPI_DB2, ("aha_scsipi_request\n")); 1145 1146 /* Get a CCB to use. */ 1147 ccb = aha_get_ccb(sc); 1148 #ifdef DIAGNOSTIC 1149 /* 1150 * This should never happen as we track the resources 1151 * in the mid-layer. 1152 */ 1153 if (ccb == NULL) { 1154 scsipi_printaddr(periph); 1155 printf("unable to allocate ccb\n"); 1156 panic("aha_scsipi_request"); 1157 } 1158 #endif 1159 1160 ccb->xs = xs; 1161 ccb->timeout = xs->timeout; 1162 1163 /* 1164 * Put all the arguments for the xfer in the ccb 1165 */ 1166 if (flags & XS_CTL_RESET) { 1167 ccb->opcode = AHA_RESET_CCB; 1168 ccb->scsi_cmd_length = 0; 1169 } else { 1170 /* can't use S/G if zero length */ 1171 if (xs->cmdlen > sizeof(ccb->scsi_cmd)) { 1172 printf("%s: cmdlen %d too large for CCB\n", 1173 device_xname(sc->sc_dev), xs->cmdlen); 1174 xs->error = XS_DRIVER_STUFFUP; 1175 goto out_bad; 1176 } 1177 ccb->opcode = (xs->datalen ? AHA_INIT_SCAT_GATH_CCB 1178 : AHA_INITIATOR_CCB); 1179 memcpy(&ccb->scsi_cmd, xs->cmd, 1180 ccb->scsi_cmd_length = xs->cmdlen); 1181 } 1182 1183 if (xs->datalen) { 1184 /* 1185 * Map the DMA transfer. 1186 */ 1187 #ifdef TFS 1188 if (flags & XS_CTL_DATA_UIO) { 1189 error = bus_dmamap_load_uio(dmat, 1190 ccb->dmamap_xfer, (struct uio *)xs->data, 1191 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 1192 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 1193 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 1194 BUS_DMA_WRITE)); 1195 } else 1196 #endif 1197 { 1198 error = bus_dmamap_load(dmat, 1199 ccb->dmamap_xfer, xs->data, xs->datalen, 1200 NULL, 1201 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 1202 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 1203 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 1204 BUS_DMA_WRITE)); 1205 } 1206 1207 switch (error) { 1208 case 0: 1209 break; 1210 1211 case ENOMEM: 1212 case EAGAIN: 1213 xs->error = XS_RESOURCE_SHORTAGE; 1214 goto out_bad; 1215 1216 default: 1217 xs->error = XS_DRIVER_STUFFUP; 1218 if (error == EFBIG) { 1219 printf("%s: aha_scsi_cmd, more than %d" 1220 " DMA segments\n", 1221 device_xname(sc->sc_dev), AHA_NSEG); 1222 } else { 1223 aprint_error_dev(sc->sc_dev, 1224 "error %d loading DMA map\n", 1225 error); 1226 } 1227 out_bad: 1228 aha_free_ccb(sc, ccb); 1229 scsipi_done(xs); 1230 return; 1231 } 1232 1233 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1234 ccb->dmamap_xfer->dm_mapsize, 1235 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 1236 BUS_DMASYNC_PREWRITE); 1237 1238 /* 1239 * Load the hardware scatter/gather map with the 1240 * contents of the DMA map. 1241 */ 1242 for (seg = 0; seg < ccb->dmamap_xfer->dm_nsegs; seg++) { 1243 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_addr, 1244 ccb->scat_gath[seg].seg_addr); 1245 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_len, 1246 ccb->scat_gath[seg].seg_len); 1247 } 1248 1249 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1250 AHA_CCB_OFF(ccb) + 1251 offsetof(struct aha_ccb, scat_gath), 1252 ccb->data_addr); 1253 ltophys(ccb->dmamap_xfer->dm_nsegs * 1254 sizeof(struct aha_scat_gath), ccb->data_length); 1255 } else { 1256 /* 1257 * No data xfer, use non S/G values. 1258 */ 1259 ltophys(0, ccb->data_addr); 1260 ltophys(0, ccb->data_length); 1261 } 1262 1263 ccb->data_out = 0; 1264 ccb->data_in = 0; 1265 ccb->target = periph->periph_target; 1266 ccb->lun = periph->periph_lun; 1267 ccb->req_sense_length = sizeof(ccb->scsi_sense); 1268 ccb->host_stat = 0x00; 1269 ccb->target_stat = 0x00; 1270 ccb->link_id = 0; 1271 ltophys(0, ccb->link_addr); 1272 1273 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1274 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 1275 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1276 1277 s = splbio(); 1278 aha_queue_ccb(sc, ccb); 1279 splx(s); 1280 1281 SC_DEBUG(periph, SCSIPI_DB3, ("cmd_sent\n")); 1282 if ((flags & XS_CTL_POLL) == 0) 1283 return; 1284 1285 /* Not allowed to use interrupts, poll for completion. */ 1286 if (aha_poll(sc, xs, ccb->timeout)) { 1287 aha_timeout(ccb); 1288 if (aha_poll(sc, xs, ccb->timeout)) 1289 aha_timeout(ccb); 1290 } 1291 return; 1292 1293 case ADAPTER_REQ_GROW_RESOURCES: 1294 /* XXX Not supported. */ 1295 return; 1296 1297 case ADAPTER_REQ_SET_XFER_MODE: 1298 /* 1299 * Can't really do this on the Adaptec; it has 1300 * its own config mechanism, but we do know how 1301 * to query what the firmware negotiated. 1302 */ 1303 /* XXX XXX XXX */ 1304 return; 1305 } 1306 } 1307 1308 /* 1309 * Poll a particular unit, looking for a particular xs 1310 */ 1311 static int 1312 aha_poll(struct aha_softc *sc, struct scsipi_xfer *xs, int count) 1313 { 1314 bus_space_tag_t iot = sc->sc_iot; 1315 bus_space_handle_t ioh = sc->sc_ioh; 1316 1317 /* timeouts are in msec, so we loop in 1000 usec cycles */ 1318 while (count) { 1319 /* 1320 * If we had interrupts enabled, would we 1321 * have got an interrupt? 1322 */ 1323 if (bus_space_read_1(iot, ioh, AHA_INTR_PORT) 1324 & AHA_INTR_ANYINTR) 1325 aha_intr(sc); 1326 if (xs->xs_status & XS_STS_DONE) 1327 return (0); 1328 delay(1000); /* only happens in boot so ok */ 1329 count--; 1330 } 1331 return (1); 1332 } 1333 1334 static void 1335 aha_timeout(void *arg) 1336 { 1337 struct aha_ccb *ccb = arg; 1338 struct scsipi_xfer *xs = ccb->xs; 1339 struct scsipi_periph *periph = xs->xs_periph; 1340 struct aha_softc *sc = 1341 device_private(periph->periph_channel->chan_adapter->adapt_dev); 1342 int s; 1343 1344 scsipi_printaddr(periph); 1345 printf("timed out"); 1346 1347 s = splbio(); 1348 1349 #ifdef AHADIAG 1350 /* 1351 * If The ccb's mbx is not free, then the board has gone south? 1352 */ 1353 aha_collect_mbo(sc); 1354 if (ccb->flags & CCB_SENDING) { 1355 aprint_error_dev(sc->sc_dev, "not taking commands!\n"); 1356 Debugger(); 1357 } 1358 #endif 1359 1360 /* 1361 * If it has been through before, then 1362 * a previous abort has failed, don't 1363 * try abort again 1364 */ 1365 if (ccb->flags & CCB_ABORT) { 1366 /* abort timed out */ 1367 printf(" AGAIN\n"); 1368 /* XXX Must reset! */ 1369 } else { 1370 /* abort the operation that has timed out */ 1371 printf("\n"); 1372 ccb->xs->error = XS_TIMEOUT; 1373 ccb->timeout = AHA_ABORT_TIMEOUT; 1374 ccb->flags |= CCB_ABORT; 1375 aha_queue_ccb(sc, ccb); 1376 } 1377 1378 splx(s); 1379 } 1380
Indexes created Mon Sep 22 10:09:38 GMT 2025