aha.c revision 1.56
1 /* $NetBSD: aha.c,v 1.56 2008/04/08 12:07:25 cegger 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Originally written by Julian Elischer (julian (at) tfs.com) 42 * for TRW Financial Systems for use under the MACH(2.5) operating system. 43 * 44 * TRW Financial Systems, in accordance with their agreement with Carnegie 45 * Mellon University, makes this software available to CMU to distribute 46 * or use in any manner that they see fit as long as this message is kept with 47 * the software. For this reason TFS also grants any other persons or 48 * organisations permission to use or modify this software. 49 * 50 * TFS supplies this software to be publicly redistributed 51 * on the understanding that TFS is not responsible for the correct 52 * functioning of this software in any circumstances. 53 */ 54 55 #include <sys/cdefs.h> 56 __KERNEL_RCSID(0, "$NetBSD: aha.c,v 1.56 2008/04/08 12:07:25 cegger Exp $"); 57 58 #include "opt_ddb.h" 59 60 #undef AHADIAG 61 62 #include <sys/param.h> 63 #include <sys/systm.h> 64 #include <sys/callout.h> 65 #include <sys/kernel.h> 66 #include <sys/errno.h> 67 #include <sys/ioctl.h> 68 #include <sys/device.h> 69 #include <sys/malloc.h> 70 #include <sys/buf.h> 71 #include <sys/proc.h> 72 #include <sys/user.h> 73 74 #include <uvm/uvm_extern.h> 75 76 #include <sys/bus.h> 77 #include <sys/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 static int aha_cmd(bus_space_tag_t, bus_space_handle_t, 97 struct aha_softc *, int, u_char *, int, u_char *); 98 static void aha_finish_ccbs(struct aha_softc *); 99 static void aha_free_ccb(struct aha_softc *, struct aha_ccb *); 100 static int aha_init_ccb(struct aha_softc *, struct aha_ccb *); 101 static struct aha_ccb *aha_get_ccb(struct aha_softc *); 102 static struct aha_ccb *aha_ccb_phys_kv(struct aha_softc *, u_long); 103 static void aha_queue_ccb(struct aha_softc *, struct aha_ccb *); 104 static void aha_collect_mbo(struct aha_softc *); 105 static void aha_start_ccbs(struct aha_softc *); 106 static void aha_done(struct aha_softc *, struct aha_ccb *); 107 static int aha_init(struct aha_softc *); 108 static void aha_inquire_setup_information(struct aha_softc *); 109 static void ahaminphys(struct buf *); 110 static void aha_scsipi_request(struct scsipi_channel *, 111 scsipi_adapter_req_t, void *); 112 static int aha_poll(struct aha_softc *, struct scsipi_xfer *, int); 113 static void aha_timeout(void *arg); 114 static int aha_create_ccbs(struct aha_softc *, struct aha_ccb *, int); 115 116 #define AHA_RESET_TIMEOUT 2000 /* time to wait for reset (mSec) */ 117 #define AHA_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 118 119 /* 120 * aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 121 * 122 * Activate Adapter command 123 * icnt: number of args (outbound bytes including opcode) 124 * ibuf: argument buffer 125 * ocnt: number of expected returned bytes 126 * obuf: result buffer 127 * wait: number of seconds to wait for response 128 * 129 * Performs an adapter command through the ports. Not to be confused with a 130 * scsi command, which is read in via the DMA; one of the adapter commands 131 * tells it to read in a scsi command. 132 */ 133 static int 134 aha_cmd(bus_space_tag_t iot, bus_space_handle_t ioh, struct aha_softc *sc, 135 int icnt, u_char *ibuf, int ocnt, u_char *obuf) 136 { 137 const char *name; 138 int i; 139 int wait; 140 u_char sts; 141 u_char opcode = ibuf[0]; 142 143 if (sc != NULL) 144 name = device_xname(&sc->sc_dev); 145 else 146 name = "(aha probe)"; 147 148 /* 149 * Calculate a reasonable timeout for the command. 150 */ 151 switch (opcode) { 152 case AHA_INQUIRE_DEVICES: 153 wait = 90 * 20000; 154 break; 155 default: 156 wait = 1 * 20000; 157 break; 158 } 159 160 /* 161 * Wait for the adapter to go idle, unless it's one of 162 * the commands which don't need this 163 */ 164 if (opcode != AHA_MBO_INTR_EN) { 165 for (i = 20000; i; i--) { /* 1 sec? */ 166 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 167 if (sts & AHA_STAT_IDLE) 168 break; 169 delay(50); 170 } 171 if (!i) { 172 printf("%s: aha_cmd, host not idle(0x%x)\n", 173 name, sts); 174 return (1); 175 } 176 } 177 /* 178 * Now that it is idle, if we expect output, preflush the 179 * queue feeding to us. 180 */ 181 if (ocnt) { 182 while ((bus_space_read_1(iot, ioh, AHA_STAT_PORT)) & AHA_STAT_DF) 183 bus_space_read_1(iot, ioh, AHA_DATA_PORT); 184 } 185 /* 186 * Output the command and the number of arguments given 187 * for each byte, first check the port is empty. 188 */ 189 while (icnt--) { 190 for (i = wait; i; i--) { 191 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 192 if (!(sts & AHA_STAT_CDF)) 193 break; 194 delay(50); 195 } 196 if (!i) { 197 if (opcode != AHA_INQUIRE_REVISION) 198 printf("%s: aha_cmd, cmd/data port full\n", name); 199 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 200 return (1); 201 } 202 bus_space_write_1(iot, ioh, AHA_CMD_PORT, *ibuf++); 203 } 204 /* 205 * If we expect input, loop that many times, each time, 206 * looking for the data register to have valid data 207 */ 208 while (ocnt--) { 209 for (i = wait; i; i--) { 210 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 211 if (sts & AHA_STAT_DF) 212 break; 213 delay(50); 214 } 215 if (!i) { 216 if (opcode != AHA_INQUIRE_REVISION) 217 printf("%s: aha_cmd, cmd/data port empty %d\n", 218 name, ocnt); 219 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 220 return (1); 221 } 222 *obuf++ = bus_space_read_1(iot, ioh, AHA_DATA_PORT); 223 } 224 /* 225 * Wait for the board to report a finished instruction. 226 * We may get an extra interrupt for the HACC signal, but this is 227 * unimportant. 228 */ 229 if (opcode != AHA_MBO_INTR_EN) { 230 for (i = 20000; i; i--) { /* 1 sec? */ 231 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 232 /* XXX Need to save this in the interrupt handler? */ 233 if (sts & AHA_INTR_HACC) 234 break; 235 delay(50); 236 } 237 if (!i) { 238 printf("%s: aha_cmd, host not finished(0x%x)\n", 239 name, sts); 240 return (1); 241 } 242 } 243 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 244 return (0); 245 } 246 247 void 248 aha_attach(sc, apd) 249 struct aha_softc *sc; 250 struct aha_probe_data *apd; 251 { 252 struct scsipi_adapter *adapt = &sc->sc_adapter; 253 struct scsipi_channel *chan = &sc->sc_channel; 254 255 TAILQ_INIT(&sc->sc_free_ccb); 256 TAILQ_INIT(&sc->sc_waiting_ccb); 257 258 /* 259 * Fill in the scsipi_adapter. 260 */ 261 memset(adapt, 0, sizeof(*adapt)); 262 adapt->adapt_dev = &sc->sc_dev; 263 adapt->adapt_nchannels = 1; 264 /* adapt_openings initialized below */ 265 /* adapt_max_periph initialized below */ 266 adapt->adapt_request = aha_scsipi_request; 267 adapt->adapt_minphys = ahaminphys; 268 269 /* 270 * Fill in the scsipi_channel. 271 */ 272 memset(chan, 0, sizeof(*chan)); 273 chan->chan_adapter = adapt; 274 chan->chan_bustype = &scsi_bustype; 275 chan->chan_channel = 0; 276 chan->chan_ntargets = 8; 277 chan->chan_nluns = 8; 278 chan->chan_id = apd->sc_scsi_dev; 279 280 aha_inquire_setup_information(sc); 281 if (aha_init(sc) != 0) { 282 /* Error during initialization! */ 283 return; 284 } 285 286 /* 287 * ask the adapter what subunits are present 288 */ 289 config_found(&sc->sc_dev, &sc->sc_channel, scsiprint); 290 } 291 292 static void 293 aha_finish_ccbs(struct aha_softc *sc) 294 { 295 struct aha_mbx_in *wmbi; 296 struct aha_ccb *ccb; 297 int i; 298 299 wmbi = wmbx->tmbi; 300 301 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 302 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 303 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 304 305 if (wmbi->stat == AHA_MBI_FREE) { 306 for (i = 0; i < AHA_MBX_SIZE; i++) { 307 if (wmbi->stat != AHA_MBI_FREE) { 308 printf("%s: mbi not in round-robin order\n", 309 device_xname(&sc->sc_dev)); 310 goto AGAIN; 311 } 312 aha_nextmbx(wmbi, wmbx, mbi); 313 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 314 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 315 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 316 } 317 #ifdef AHADIAGnot 318 printf("%s: mbi interrupt with no full mailboxes\n", 319 device_xname(&sc->sc_dev)); 320 #endif 321 return; 322 } 323 324 AGAIN: 325 do { 326 ccb = aha_ccb_phys_kv(sc, phystol(wmbi->ccb_addr)); 327 if (!ccb) { 328 printf("%s: bad mbi ccb pointer; skipping\n", 329 device_xname(&sc->sc_dev)); 330 goto next; 331 } 332 333 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 334 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 335 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 336 337 #ifdef AHADEBUG 338 if (aha_debug) { 339 u_char *cp = ccb->scsi_cmd; 340 printf("op=%x %x %x %x %x %x\n", 341 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 342 printf("stat %x for mbi addr = %p, ", 343 wmbi->stat, wmbi); 344 printf("ccb addr = %p\n", ccb); 345 } 346 #endif /* AHADEBUG */ 347 348 switch (wmbi->stat) { 349 case AHA_MBI_OK: 350 case AHA_MBI_ERROR: 351 if ((ccb->flags & CCB_ABORT) != 0) { 352 /* 353 * If we already started an abort, wait for it 354 * to complete before clearing the CCB. We 355 * could instead just clear CCB_SENDING, but 356 * what if the mailbox was already received? 357 * The worst that happens here is that we clear 358 * the CCB a bit later than we need to. BFD. 359 */ 360 goto next; 361 } 362 break; 363 364 case AHA_MBI_ABORT: 365 case AHA_MBI_UNKNOWN: 366 /* 367 * Even if the CCB wasn't found, we clear it anyway. 368 * See preceding comment. 369 */ 370 break; 371 372 default: 373 printf("%s: bad mbi status %02x; skipping\n", 374 device_xname(&sc->sc_dev), wmbi->stat); 375 goto next; 376 } 377 378 callout_stop(&ccb->xs->xs_callout); 379 aha_done(sc, ccb); 380 381 next: 382 wmbi->stat = AHA_MBI_FREE; 383 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 384 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 385 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 386 aha_nextmbx(wmbi, wmbx, mbi); 387 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 388 AHA_MBI_OFF(wmbi), sizeof(struct aha_mbx_in), 389 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 390 } while (wmbi->stat != AHA_MBI_FREE); 391 392 wmbx->tmbi = wmbi; 393 } 394 395 /* 396 * Catch an interrupt from the adaptor 397 */ 398 int 399 aha_intr(arg) 400 void *arg; 401 { 402 struct aha_softc *sc = arg; 403 bus_space_tag_t iot = sc->sc_iot; 404 bus_space_handle_t ioh = sc->sc_ioh; 405 u_char sts; 406 407 #ifdef AHADEBUG 408 printf("%s: aha_intr ", device_xname(&sc->sc_dev)); 409 #endif /*AHADEBUG */ 410 411 /* 412 * First acknowledge the interrupt, Then if it's not telling about 413 * a completed operation just return. 414 */ 415 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 416 if ((sts & AHA_INTR_ANYINTR) == 0) 417 return (0); 418 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 419 420 #ifdef AHADIAG 421 /* Make sure we clear CCB_SENDING before finishing a CCB. */ 422 aha_collect_mbo(sc); 423 #endif 424 425 /* Mail box out empty? */ 426 if (sts & AHA_INTR_MBOA) { 427 struct aha_toggle toggle; 428 429 toggle.cmd.opcode = AHA_MBO_INTR_EN; 430 toggle.cmd.enable = 0; 431 aha_cmd(iot, ioh, sc, 432 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 433 0, (u_char *)0); 434 aha_start_ccbs(sc); 435 } 436 437 /* Mail box in full? */ 438 if (sts & AHA_INTR_MBIF) 439 aha_finish_ccbs(sc); 440 441 return (1); 442 } 443 444 static inline void 445 aha_reset_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 446 { 447 448 ccb->flags = 0; 449 } 450 451 /* 452 * A ccb is put onto the free list. 453 */ 454 static void 455 aha_free_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 456 { 457 int s; 458 459 s = splbio(); 460 aha_reset_ccb(sc, ccb); 461 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 462 splx(s); 463 } 464 465 static int 466 aha_init_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 467 { 468 bus_dma_tag_t dmat = sc->sc_dmat; 469 int hashnum, error; 470 471 /* 472 * Create the DMA map for this CCB. 473 */ 474 error = bus_dmamap_create(dmat, AHA_MAXXFER, AHA_NSEG, AHA_MAXXFER, 475 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 476 if (error) { 477 aprint_error_dev(&sc->sc_dev, "unable to create ccb DMA map, error = %d\n", 478 error); 479 return (error); 480 } 481 482 /* 483 * put in the phystokv hash table 484 * Never gets taken out. 485 */ 486 ccb->hashkey = sc->sc_dmamap_control->dm_segs[0].ds_addr + 487 AHA_CCB_OFF(ccb); 488 hashnum = CCB_HASH(ccb->hashkey); 489 ccb->nexthash = sc->sc_ccbhash[hashnum]; 490 sc->sc_ccbhash[hashnum] = ccb; 491 aha_reset_ccb(sc, ccb); 492 return (0); 493 } 494 495 /* 496 * Create a set of ccbs and add them to the free list. Called once 497 * by aha_init(). We return the number of CCBs successfully created. 498 */ 499 static int 500 aha_create_ccbs(struct aha_softc *sc, struct aha_ccb *ccbstore, int count) 501 { 502 struct aha_ccb *ccb; 503 int i, error; 504 505 memset(ccbstore, 0, sizeof(struct aha_ccb) * count); 506 for (i = 0; i < count; i++) { 507 ccb = &ccbstore[i]; 508 if ((error = aha_init_ccb(sc, ccb)) != 0) { 509 aprint_error_dev(&sc->sc_dev, "unable to initialize ccb, error = %d\n", 510 error); 511 goto out; 512 } 513 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 514 } 515 out: 516 return (i); 517 } 518 519 /* 520 * Get a free ccb 521 * 522 * If there are none, see if we can allocate a new one. If so, put it in 523 * the hash table too otherwise either return an error or sleep. 524 */ 525 struct aha_ccb * 526 aha_get_ccb(struct aha_softc *sc) 527 { 528 struct aha_ccb *ccb; 529 int s; 530 531 s = splbio(); 532 ccb = TAILQ_FIRST(&sc->sc_free_ccb); 533 if (ccb != NULL) { 534 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 535 ccb->flags |= CCB_ALLOC; 536 } 537 splx(s); 538 return (ccb); 539 } 540 541 /* 542 * Given a physical address, find the ccb that it corresponds to. 543 */ 544 static struct aha_ccb * 545 aha_ccb_phys_kv(struct aha_softc *sc, u_long ccb_phys) 546 { 547 int hashnum = CCB_HASH(ccb_phys); 548 struct aha_ccb *ccb = sc->sc_ccbhash[hashnum]; 549 550 while (ccb) { 551 if (ccb->hashkey == ccb_phys) 552 break; 553 ccb = ccb->nexthash; 554 } 555 return (ccb); 556 } 557 558 /* 559 * Queue a CCB to be sent to the controller, and send it if possible. 560 */ 561 static void 562 aha_queue_ccb(struct aha_softc *sc, struct aha_ccb *ccb) 563 { 564 565 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 566 aha_start_ccbs(sc); 567 } 568 569 /* 570 * Garbage collect mailboxes that are no longer in use. 571 */ 572 static void 573 aha_collect_mbo(struct aha_softc *sc) 574 { 575 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 576 #ifdef AHADIAG 577 struct aha_ccb *ccb; 578 #endif 579 580 wmbo = wmbx->cmbo; 581 582 while (sc->sc_mbofull > 0) { 583 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 584 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 585 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 586 if (wmbo->cmd != AHA_MBO_FREE) 587 break; 588 589 #ifdef AHADIAG 590 ccb = aha_ccb_phys_kv(sc, phystol(wmbo->ccb_addr)); 591 ccb->flags &= ~CCB_SENDING; 592 #endif 593 594 --sc->sc_mbofull; 595 aha_nextmbx(wmbo, wmbx, mbo); 596 } 597 598 wmbx->cmbo = wmbo; 599 } 600 601 /* 602 * Send as many CCBs as we have empty mailboxes for. 603 */ 604 static void 605 aha_start_ccbs(struct aha_softc *sc) 606 { 607 bus_space_tag_t iot = sc->sc_iot; 608 bus_space_handle_t ioh = sc->sc_ioh; 609 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 610 struct aha_ccb *ccb; 611 612 wmbo = wmbx->tmbo; 613 614 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 615 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 616 aha_collect_mbo(sc); 617 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 618 struct aha_toggle toggle; 619 620 toggle.cmd.opcode = AHA_MBO_INTR_EN; 621 toggle.cmd.enable = 1; 622 aha_cmd(iot, ioh, sc, 623 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 624 0, (u_char *)0); 625 break; 626 } 627 } 628 629 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 630 #ifdef AHADIAG 631 ccb->flags |= CCB_SENDING; 632 #endif 633 634 /* Link ccb to mbo. */ 635 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 636 AHA_CCB_OFF(ccb), wmbo->ccb_addr); 637 if (ccb->flags & CCB_ABORT) 638 wmbo->cmd = AHA_MBO_ABORT; 639 else 640 wmbo->cmd = AHA_MBO_START; 641 642 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 643 AHA_MBO_OFF(wmbo), sizeof(struct aha_mbx_out), 644 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 645 646 /* Tell the card to poll immediately. */ 647 bus_space_write_1(iot, ioh, AHA_CMD_PORT, AHA_START_SCSI); 648 649 if ((ccb->xs->xs_control & XS_CTL_POLL) == 0) 650 callout_reset(&ccb->xs->xs_callout, 651 mstohz(ccb->timeout), aha_timeout, ccb); 652 653 ++sc->sc_mbofull; 654 aha_nextmbx(wmbo, wmbx, mbo); 655 } 656 657 wmbx->tmbo = wmbo; 658 } 659 660 /* 661 * We have a ccb which has been processed by the 662 * adaptor, now we look to see how the operation 663 * went. Wake up the owner if waiting 664 */ 665 static void 666 aha_done(struct aha_softc *sc, struct aha_ccb *ccb) 667 { 668 bus_dma_tag_t dmat = sc->sc_dmat; 669 struct scsi_sense_data *s1, *s2; 670 struct scsipi_xfer *xs = ccb->xs; 671 672 SC_DEBUG(xs->xs_periph, SCSIPI_DB2, ("aha_done\n")); 673 674 /* 675 * If we were a data transfer, unload the map that described 676 * the data buffer. 677 */ 678 if (xs->datalen) { 679 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 680 ccb->dmamap_xfer->dm_mapsize, 681 (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD : 682 BUS_DMASYNC_POSTWRITE); 683 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 684 } 685 686 /* 687 * Otherwise, put the results of the operation 688 * into the xfer and call whoever started it 689 */ 690 #ifdef AHADIAG 691 if (ccb->flags & CCB_SENDING) { 692 printf("%s: exiting ccb still in transit!\n", device_xname(&sc->sc_dev)); 693 Debugger(); 694 return; 695 } 696 #endif 697 if ((ccb->flags & CCB_ALLOC) == 0) { 698 printf("%s: exiting ccb not allocated!\n", device_xname(&sc->sc_dev)); 699 Debugger(); 700 return; 701 } 702 if (xs->error == XS_NOERROR) { 703 if (ccb->host_stat != AHA_OK) { 704 switch (ccb->host_stat) { 705 case AHA_SEL_TIMEOUT: /* No response */ 706 xs->error = XS_SELTIMEOUT; 707 break; 708 default: /* Other scsi protocol messes */ 709 printf("%s: host_stat %x\n", 710 device_xname(&sc->sc_dev), ccb->host_stat); 711 xs->error = XS_DRIVER_STUFFUP; 712 break; 713 } 714 } else if (ccb->target_stat != SCSI_OK) { 715 switch (ccb->target_stat) { 716 case SCSI_CHECK: 717 s1 = (struct scsi_sense_data *) (((char *) (&ccb->scsi_cmd)) + 718 ccb->scsi_cmd_length); 719 s2 = &xs->sense.scsi_sense; 720 *s2 = *s1; 721 xs->error = XS_SENSE; 722 break; 723 case SCSI_BUSY: 724 xs->error = XS_BUSY; 725 break; 726 default: 727 printf("%s: target_stat %x\n", 728 device_xname(&sc->sc_dev), ccb->target_stat); 729 xs->error = XS_DRIVER_STUFFUP; 730 break; 731 } 732 } else 733 xs->resid = 0; 734 } 735 aha_free_ccb(sc, ccb); 736 scsipi_done(xs); 737 } 738 739 /* 740 * Find the board and find its irq/drq 741 */ 742 int 743 aha_find(iot, ioh, sc) 744 bus_space_tag_t iot; 745 bus_space_handle_t ioh; 746 struct aha_probe_data *sc; 747 { 748 int i; 749 u_char sts; 750 struct aha_config config; 751 int irq, drq; 752 753 /* 754 * assume invalid status means the board is not present. 755 */ 756 757 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 758 if (sts == 0) 759 return (0); 760 if ((sts & (AHA_STAT_STST|AHA_STAT_RSVD|AHA_STAT_CDF)) != 0) 761 return (0); 762 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 763 if ((sts & AHA_INTR_RSVD) != 0) 764 return (0); 765 766 /* 767 * reset board, If it doesn't respond, assume 768 * that it's not there.. good for the probe 769 */ 770 771 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_HRST | AHA_CTRL_SRST); 772 773 delay(100); 774 for (i = AHA_RESET_TIMEOUT; i; i--) { 775 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 776 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 777 break; 778 delay(1000); /* calibrated in msec */ 779 } 780 if (!i) { 781 #ifdef AHADEBUG 782 if (aha_debug) 783 printf("aha_find: No answer from adaptec board\n"); 784 #endif /* AHADEBUG */ 785 return (0); 786 } 787 788 /* 789 * setup DMA channel from jumpers and save int 790 * level 791 */ 792 delay(1000); /* for Bustek 545 */ 793 config.cmd.opcode = AHA_INQUIRE_CONFIG; 794 aha_cmd(iot, ioh, (struct aha_softc *)0, 795 sizeof(config.cmd), (u_char *)&config.cmd, 796 sizeof(config.reply), (u_char *)&config.reply); 797 switch (config.reply.chan) { 798 case EISADMA: 799 drq = -1; 800 break; 801 case CHAN0: 802 drq = 0; 803 break; 804 case CHAN5: 805 drq = 5; 806 break; 807 case CHAN6: 808 drq = 6; 809 break; 810 case CHAN7: 811 drq = 7; 812 break; 813 default: 814 printf("aha_find: illegal drq setting %x\n", config.reply.chan); 815 return (0); 816 } 817 818 switch (config.reply.intr) { 819 case INT9: 820 irq = 9; 821 break; 822 case INT10: 823 irq = 10; 824 break; 825 case INT11: 826 irq = 11; 827 break; 828 case INT12: 829 irq = 12; 830 break; 831 case INT14: 832 irq = 14; 833 break; 834 case INT15: 835 irq = 15; 836 break; 837 default: 838 printf("aha_find: illegal irq setting %x\n", config.reply.intr); 839 return (0); 840 } 841 842 if (sc) { 843 sc->sc_irq = irq; 844 sc->sc_drq = drq; 845 sc->sc_scsi_dev = config.reply.scsi_dev; 846 } 847 848 return (1); 849 } 850 851 /* 852 * Start the board, ready for normal operation 853 */ 854 static int 855 aha_init(struct aha_softc *sc) 856 { 857 bus_space_tag_t iot = sc->sc_iot; 858 bus_space_handle_t ioh = sc->sc_ioh; 859 bus_dma_segment_t seg; 860 struct aha_devices devices; 861 struct aha_setup setup; 862 struct aha_mailbox mailbox; 863 int error, i, j, initial_ccbs, rseg; 864 865 /* 866 * XXX 867 * If we are a 1542C or later, disable the extended BIOS so that the 868 * mailbox interface is unlocked. 869 * No need to check the extended BIOS flags as some of the 870 * extensions that cause us problems are not flagged in that byte. 871 */ 872 if (!strncmp(sc->sc_model, "1542C", 5)) { 873 struct aha_extbios extbios; 874 struct aha_unlock unlock; 875 876 printf("%s: unlocking mailbox interface\n", device_xname(&sc->sc_dev)); 877 extbios.cmd.opcode = AHA_EXT_BIOS; 878 aha_cmd(iot, ioh, sc, 879 sizeof(extbios.cmd), (u_char *)&extbios.cmd, 880 sizeof(extbios.reply), (u_char *)&extbios.reply); 881 882 #ifdef AHADEBUG 883 printf("%s: flags=%02x, mailboxlock=%02x\n", 884 device_xname(&sc->sc_dev), 885 extbios.reply.flags, extbios.reply.mailboxlock); 886 #endif /* AHADEBUG */ 887 888 unlock.cmd.opcode = AHA_MBX_ENABLE; 889 unlock.cmd.junk = 0; 890 unlock.cmd.magic = extbios.reply.mailboxlock; 891 aha_cmd(iot, ioh, sc, 892 sizeof(unlock.cmd), (u_char *)&unlock.cmd, 893 0, (u_char *)0); 894 } 895 896 #if 0 897 /* 898 * Change the bus on/off times to not clash with other DMA users. 899 */ 900 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); 901 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); 902 #endif 903 904 /* Inquire Installed Devices (to force synchronous negotiation). */ 905 devices.cmd.opcode = AHA_INQUIRE_DEVICES; 906 aha_cmd(iot, ioh, sc, 907 sizeof(devices.cmd), (u_char *)&devices.cmd, 908 sizeof(devices.reply), (u_char *)&devices.reply); 909 910 /* Count installed units */ 911 initial_ccbs = 0; 912 for (i = 0; i < 8; i++) { 913 for (j = 0; j < 8; j++) { 914 if (((devices.reply.lun_map[i] >> j) & 1) == 1) 915 initial_ccbs += 1; 916 } 917 } 918 initial_ccbs *= 2; 919 if (initial_ccbs > AHA_CCB_MAX) 920 initial_ccbs = AHA_CCB_MAX; 921 if (initial_ccbs == 0) /* yes, this can happen */ 922 initial_ccbs = 2; 923 924 /* Obtain setup information from. */ 925 setup.cmd.opcode = AHA_INQUIRE_SETUP; 926 setup.cmd.len = sizeof(setup.reply); 927 aha_cmd(iot, ioh, sc, 928 sizeof(setup.cmd), (u_char *)&setup.cmd, 929 sizeof(setup.reply), (u_char *)&setup.reply); 930 931 printf("%s: %s, %s\n", 932 device_xname(&sc->sc_dev), 933 setup.reply.sync_neg ? "sync" : "async", 934 setup.reply.parity ? "parity" : "no parity"); 935 936 for (i = 0; i < 8; i++) { 937 if (!setup.reply.sync[i].valid || 938 (!setup.reply.sync[i].offset && !setup.reply.sync[i].period)) 939 continue; 940 printf("%s targ %d: sync, offset %d, period %dnsec\n", 941 device_xname(&sc->sc_dev), i, 942 setup.reply.sync[i].offset, setup.reply.sync[i].period * 50 + 200); 943 } 944 945 /* 946 * Allocate the mailbox and control blocks. 947 */ 948 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct aha_control), 949 PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 950 aprint_error_dev(&sc->sc_dev, "unable to allocate control structures, " 951 "error = %d\n", error); 952 return (error); 953 } 954 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 955 sizeof(struct aha_control), (void **)&sc->sc_control, 956 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 957 aprint_error_dev(&sc->sc_dev, "unable to map control structures, error = %d\n", error); 958 return (error); 959 } 960 961 /* 962 * Create and load the DMA map used for the mailbox and 963 * control blocks. 964 */ 965 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct aha_control), 966 1, sizeof(struct aha_control), 0, BUS_DMA_NOWAIT, 967 &sc->sc_dmamap_control)) != 0) { 968 aprint_error_dev(&sc->sc_dev, "unable to create control DMA map, error = %d\n", 969 error); 970 return (error); 971 } 972 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 973 sc->sc_control, sizeof(struct aha_control), NULL, 974 BUS_DMA_NOWAIT)) != 0) { 975 aprint_error_dev(&sc->sc_dev, "unable to load control DMA map, error = %d\n", 976 error); 977 return (error); 978 } 979 980 /* 981 * Initialize the control blocks. 982 */ 983 i = aha_create_ccbs(sc, sc->sc_control->ac_ccbs, initial_ccbs); 984 if (i == 0) { 985 aprint_error_dev(&sc->sc_dev, "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 = (void *)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, "error %d loading DMA map\n", 1224 error); 1225 } 1226 out_bad: 1227 aha_free_ccb(sc, ccb); 1228 scsipi_done(xs); 1229 return; 1230 } 1231 1232 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1233 ccb->dmamap_xfer->dm_mapsize, 1234 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 1235 BUS_DMASYNC_PREWRITE); 1236 1237 /* 1238 * Load the hardware scatter/gather map with the 1239 * contents of the DMA map. 1240 */ 1241 for (seg = 0; seg < ccb->dmamap_xfer->dm_nsegs; seg++) { 1242 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_addr, 1243 ccb->scat_gath[seg].seg_addr); 1244 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_len, 1245 ccb->scat_gath[seg].seg_len); 1246 } 1247 1248 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1249 AHA_CCB_OFF(ccb) + 1250 offsetof(struct aha_ccb, scat_gath), 1251 ccb->data_addr); 1252 ltophys(ccb->dmamap_xfer->dm_nsegs * 1253 sizeof(struct aha_scat_gath), ccb->data_length); 1254 } else { 1255 /* 1256 * No data xfer, use non S/G values. 1257 */ 1258 ltophys(0, ccb->data_addr); 1259 ltophys(0, ccb->data_length); 1260 } 1261 1262 ccb->data_out = 0; 1263 ccb->data_in = 0; 1264 ccb->target = periph->periph_target; 1265 ccb->lun = periph->periph_lun; 1266 ccb->req_sense_length = sizeof(ccb->scsi_sense); 1267 ccb->host_stat = 0x00; 1268 ccb->target_stat = 0x00; 1269 ccb->link_id = 0; 1270 ltophys(0, ccb->link_addr); 1271 1272 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1273 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 1274 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1275 1276 s = splbio(); 1277 aha_queue_ccb(sc, ccb); 1278 splx(s); 1279 1280 SC_DEBUG(periph, SCSIPI_DB3, ("cmd_sent\n")); 1281 if ((flags & XS_CTL_POLL) == 0) 1282 return; 1283 1284 /* Not allowed to use interrupts, poll for completion. */ 1285 if (aha_poll(sc, xs, ccb->timeout)) { 1286 aha_timeout(ccb); 1287 if (aha_poll(sc, xs, ccb->timeout)) 1288 aha_timeout(ccb); 1289 } 1290 return; 1291 1292 case ADAPTER_REQ_GROW_RESOURCES: 1293 /* XXX Not supported. */ 1294 return; 1295 1296 case ADAPTER_REQ_SET_XFER_MODE: 1297 /* 1298 * Can't really do this on the Adaptec; it has 1299 * its own config mechanism, but we do know how 1300 * to query what the firmware negotiated. 1301 */ 1302 /* XXX XXX XXX */ 1303 return; 1304 } 1305 } 1306 1307 /* 1308 * Poll a particular unit, looking for a particular xs 1309 */ 1310 static int 1311 aha_poll(struct aha_softc *sc, struct scsipi_xfer *xs, int count) 1312 { 1313 bus_space_tag_t iot = sc->sc_iot; 1314 bus_space_handle_t ioh = sc->sc_ioh; 1315 1316 /* timeouts are in msec, so we loop in 1000 usec cycles */ 1317 while (count) { 1318 /* 1319 * If we had interrupts enabled, would we 1320 * have got an interrupt? 1321 */ 1322 if (bus_space_read_1(iot, ioh, AHA_INTR_PORT) & AHA_INTR_ANYINTR) 1323 aha_intr(sc); 1324 if (xs->xs_status & XS_STS_DONE) 1325 return (0); 1326 delay(1000); /* only happens in boot so ok */ 1327 count--; 1328 } 1329 return (1); 1330 } 1331 1332 static void 1333 aha_timeout(void *arg) 1334 { 1335 struct aha_ccb *ccb = arg; 1336 struct scsipi_xfer *xs = ccb->xs; 1337 struct scsipi_periph *periph = xs->xs_periph; 1338 struct aha_softc *sc = 1339 (void *)periph->periph_channel->chan_adapter->adapt_dev; 1340 int s; 1341 1342 scsipi_printaddr(periph); 1343 printf("timed out"); 1344 1345 s = splbio(); 1346 1347 #ifdef AHADIAG 1348 /* 1349 * If The ccb's mbx is not free, then the board has gone south? 1350 */ 1351 aha_collect_mbo(sc); 1352 if (ccb->flags & CCB_SENDING) { 1353 aprint_error_dev(&sc->sc_dev, "not taking commands!\n"); 1354 Debugger(); 1355 } 1356 #endif 1357 1358 /* 1359 * If it has been through before, then 1360 * a previous abort has failed, don't 1361 * try abort again 1362 */ 1363 if (ccb->flags & CCB_ABORT) { 1364 /* abort timed out */ 1365 printf(" AGAIN\n"); 1366 /* XXX Must reset! */ 1367 } else { 1368 /* abort the operation that has timed out */ 1369 printf("\n"); 1370 ccb->xs->error = XS_TIMEOUT; 1371 ccb->timeout = AHA_ABORT_TIMEOUT; 1372 ccb->flags |= CCB_ABORT; 1373 aha_queue_ccb(sc, ccb); 1374 } 1375 1376 splx(s); 1377 } 1378
Indexes created Tue Sep 23 07:09:52 GMT 2025