Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/aha.c
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* $NetBSD: aha.c,v 1.52 2006/11/16 01:32:50 christos 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@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 1.52 2006/11/16 01:32:50 christos 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 <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 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 = sc->sc_dev.dv_xname; 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 sc->sc_dev.dv_xname); 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 sc->sc_dev.dv_xname); 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 sc->sc_dev.dv_xname); 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 sc->sc_dev.dv_xname, 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 ", sc->sc_dev.dv_xname); 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 printf("%s: unable to create ccb DMA map, error = %d\n", 478 sc->sc_dev.dv_xname, 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 printf("%s: unable to initialize ccb, error = %d\n", 510 sc->sc_dev.dv_xname, 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", sc->sc_dev.dv_xname); 693 Debugger(); 694 return; 695 } 696 #endif 697 if ((ccb->flags & CCB_ALLOC) == 0) { 698 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 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 sc->sc_dev.dv_xname, 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 sc->sc_dev.dv_xname, 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 * reset board, If it doesn't respond, assume 755 * that it's not there.. good for the probe 756 */ 757 758 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_HRST | AHA_CTRL_SRST); 759 760 delay(100); 761 for (i = AHA_RESET_TIMEOUT; i; i--) { 762 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 763 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 764 break; 765 delay(1000); /* calibrated in msec */ 766 } 767 if (!i) { 768 #ifdef AHADEBUG 769 if (aha_debug) 770 printf("aha_find: No answer from adaptec board\n"); 771 #endif /* AHADEBUG */ 772 return (0); 773 } 774 775 /* 776 * setup DMA channel from jumpers and save int 777 * level 778 */ 779 delay(1000); /* for Bustek 545 */ 780 config.cmd.opcode = AHA_INQUIRE_CONFIG; 781 aha_cmd(iot, ioh, (struct aha_softc *)0, 782 sizeof(config.cmd), (u_char *)&config.cmd, 783 sizeof(config.reply), (u_char *)&config.reply); 784 switch (config.reply.chan) { 785 case EISADMA: 786 drq = -1; 787 break; 788 case CHAN0: 789 drq = 0; 790 break; 791 case CHAN5: 792 drq = 5; 793 break; 794 case CHAN6: 795 drq = 6; 796 break; 797 case CHAN7: 798 drq = 7; 799 break; 800 default: 801 printf("aha_find: illegal drq setting %x\n", config.reply.chan); 802 return (0); 803 } 804 805 switch (config.reply.intr) { 806 case INT9: 807 irq = 9; 808 break; 809 case INT10: 810 irq = 10; 811 break; 812 case INT11: 813 irq = 11; 814 break; 815 case INT12: 816 irq = 12; 817 break; 818 case INT14: 819 irq = 14; 820 break; 821 case INT15: 822 irq = 15; 823 break; 824 default: 825 printf("aha_find: illegal irq setting %x\n", config.reply.intr); 826 return (0); 827 } 828 829 if (sc) { 830 sc->sc_irq = irq; 831 sc->sc_drq = drq; 832 sc->sc_scsi_dev = config.reply.scsi_dev; 833 } 834 835 return (1); 836 } 837 838 /* 839 * Start the board, ready for normal operation 840 */ 841 static int 842 aha_init(struct aha_softc *sc) 843 { 844 bus_space_tag_t iot = sc->sc_iot; 845 bus_space_handle_t ioh = sc->sc_ioh; 846 bus_dma_segment_t seg; 847 struct aha_devices devices; 848 struct aha_setup setup; 849 struct aha_mailbox mailbox; 850 int error, i, j, initial_ccbs, rseg; 851 852 /* 853 * XXX 854 * If we are a 1542C or later, disable the extended BIOS so that the 855 * mailbox interface is unlocked. 856 * No need to check the extended BIOS flags as some of the 857 * extensions that cause us problems are not flagged in that byte. 858 */ 859 if (!strncmp(sc->sc_model, "1542C", 5)) { 860 struct aha_extbios extbios; 861 struct aha_unlock unlock; 862 863 printf("%s: unlocking mailbox interface\n", sc->sc_dev.dv_xname); 864 extbios.cmd.opcode = AHA_EXT_BIOS; 865 aha_cmd(iot, ioh, sc, 866 sizeof(extbios.cmd), (u_char *)&extbios.cmd, 867 sizeof(extbios.reply), (u_char *)&extbios.reply); 868 869 #ifdef AHADEBUG 870 printf("%s: flags=%02x, mailboxlock=%02x\n", 871 sc->sc_dev.dv_xname, 872 extbios.reply.flags, extbios.reply.mailboxlock); 873 #endif /* AHADEBUG */ 874 875 unlock.cmd.opcode = AHA_MBX_ENABLE; 876 unlock.cmd.junk = 0; 877 unlock.cmd.magic = extbios.reply.mailboxlock; 878 aha_cmd(iot, ioh, sc, 879 sizeof(unlock.cmd), (u_char *)&unlock.cmd, 880 0, (u_char *)0); 881 } 882 883 #if 0 884 /* 885 * Change the bus on/off times to not clash with other DMA users. 886 */ 887 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); 888 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); 889 #endif 890 891 /* Inquire Installed Devices (to force synchronous negotiation). */ 892 devices.cmd.opcode = AHA_INQUIRE_DEVICES; 893 aha_cmd(iot, ioh, sc, 894 sizeof(devices.cmd), (u_char *)&devices.cmd, 895 sizeof(devices.reply), (u_char *)&devices.reply); 896 897 /* Count installed units */ 898 initial_ccbs = 0; 899 for (i = 0; i < 8; i++) { 900 for (j = 0; j < 8; j++) { 901 if (((devices.reply.lun_map[i] >> j) & 1) == 1) 902 initial_ccbs += 1; 903 } 904 } 905 initial_ccbs *= 2; 906 if (initial_ccbs > AHA_CCB_MAX) 907 initial_ccbs = AHA_CCB_MAX; 908 if (initial_ccbs == 0) /* yes, this can happen */ 909 initial_ccbs = 2; 910 911 /* Obtain setup information from. */ 912 setup.cmd.opcode = AHA_INQUIRE_SETUP; 913 setup.cmd.len = sizeof(setup.reply); 914 aha_cmd(iot, ioh, sc, 915 sizeof(setup.cmd), (u_char *)&setup.cmd, 916 sizeof(setup.reply), (u_char *)&setup.reply); 917 918 printf("%s: %s, %s\n", 919 sc->sc_dev.dv_xname, 920 setup.reply.sync_neg ? "sync" : "async", 921 setup.reply.parity ? "parity" : "no parity"); 922 923 for (i = 0; i < 8; i++) { 924 if (!setup.reply.sync[i].valid || 925 (!setup.reply.sync[i].offset && !setup.reply.sync[i].period)) 926 continue; 927 printf("%s targ %d: sync, offset %d, period %dnsec\n", 928 sc->sc_dev.dv_xname, i, 929 setup.reply.sync[i].offset, setup.reply.sync[i].period * 50 + 200); 930 } 931 932 /* 933 * Allocate the mailbox and control blocks. 934 */ 935 if ((error = bus_dmamem_alloc(sc->sc_dmat, sizeof(struct aha_control), 936 PAGE_SIZE, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) != 0) { 937 printf("%s: unable to allocate control structures, " 938 "error = %d\n", sc->sc_dev.dv_xname, error); 939 return (error); 940 } 941 if ((error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, 942 sizeof(struct aha_control), (caddr_t *)&sc->sc_control, 943 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) { 944 printf("%s: unable to map control structures, error = %d\n", 945 sc->sc_dev.dv_xname, error); 946 return (error); 947 } 948 949 /* 950 * Create and load the DMA map used for the mailbox and 951 * control blocks. 952 */ 953 if ((error = bus_dmamap_create(sc->sc_dmat, sizeof(struct aha_control), 954 1, sizeof(struct aha_control), 0, BUS_DMA_NOWAIT, 955 &sc->sc_dmamap_control)) != 0) { 956 printf("%s: unable to create control DMA map, error = %d\n", 957 sc->sc_dev.dv_xname, error); 958 return (error); 959 } 960 if ((error = bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_control, 961 sc->sc_control, sizeof(struct aha_control), NULL, 962 BUS_DMA_NOWAIT)) != 0) { 963 printf("%s: unable to load control DMA map, error = %d\n", 964 sc->sc_dev.dv_xname, error); 965 return (error); 966 } 967 968 /* 969 * Initialize the control blocks. 970 */ 971 i = aha_create_ccbs(sc, sc->sc_control->ac_ccbs, initial_ccbs); 972 if (i == 0) { 973 printf("%s: unable to create control blocks\n", 974 sc->sc_dev.dv_xname); 975 return (ENOMEM); 976 } else if (i != initial_ccbs) { 977 printf("%s: WARNING: only %d of %d control blocks created\n", 978 sc->sc_dev.dv_xname, i, initial_ccbs); 979 } 980 981 sc->sc_adapter.adapt_openings = i; 982 sc->sc_adapter.adapt_max_periph = sc->sc_adapter.adapt_openings; 983 984 /* 985 * Set up initial mail box for round-robin operation. 986 */ 987 for (i = 0; i < AHA_MBX_SIZE; i++) { 988 wmbx->mbo[i].cmd = AHA_MBO_FREE; 989 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 990 AHA_MBO_OFF(&wmbx->mbo[i]), sizeof(struct aha_mbx_out), 991 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 992 wmbx->mbi[i].stat = AHA_MBI_FREE; 993 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 994 AHA_MBI_OFF(&wmbx->mbi[i]), sizeof(struct aha_mbx_in), 995 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 996 } 997 wmbx->cmbo = wmbx->tmbo = &wmbx->mbo[0]; 998 wmbx->tmbi = &wmbx->mbi[0]; 999 sc->sc_mbofull = 0; 1000 1001 /* Initialize mail box. */ 1002 mailbox.cmd.opcode = AHA_MBX_INIT; 1003 mailbox.cmd.nmbx = AHA_MBX_SIZE; 1004 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1005 offsetof(struct aha_control, ac_mbx), mailbox.cmd.addr); 1006 aha_cmd(iot, ioh, sc, 1007 sizeof(mailbox.cmd), (u_char *)&mailbox.cmd, 1008 0, (u_char *)0); 1009 return (0); 1010 } 1011 1012 static void 1013 aha_inquire_setup_information(struct aha_softc *sc) 1014 { 1015 bus_space_tag_t iot = sc->sc_iot; 1016 bus_space_handle_t ioh = sc->sc_ioh; 1017 struct aha_revision revision; 1018 u_char sts; 1019 int i; 1020 char *p; 1021 1022 strcpy(sc->sc_model, "unknown"); 1023 1024 /* 1025 * Assume we have a board at this stage, do an adapter inquire 1026 * to find out what type of controller it is. If the command 1027 * fails, we assume it's either a crusty board or an old 1542 1028 * clone, and skip the board-specific stuff. 1029 */ 1030 revision.cmd.opcode = AHA_INQUIRE_REVISION; 1031 if (aha_cmd(iot, ioh, sc, 1032 sizeof(revision.cmd), (u_char *)&revision.cmd, 1033 sizeof(revision.reply), (u_char *)&revision.reply)) { 1034 /* 1035 * aha_cmd() already started the reset. It's not clear we 1036 * even need to bother here. 1037 */ 1038 for (i = AHA_RESET_TIMEOUT; i; i--) { 1039 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 1040 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 1041 break; 1042 delay(1000); 1043 } 1044 if (!i) { 1045 #ifdef AHADEBUG 1046 printf("aha_init: soft reset failed\n"); 1047 #endif /* AHADEBUG */ 1048 return; 1049 } 1050 #ifdef AHADEBUG 1051 printf("aha_init: inquire command failed\n"); 1052 #endif /* AHADEBUG */ 1053 goto noinquire; 1054 } 1055 1056 #ifdef AHADEBUG 1057 printf("%s: inquire %x, %x, %x, %x\n", 1058 sc->sc_dev.dv_xname, 1059 revision.reply.boardid, revision.reply.spec_opts, 1060 revision.reply.revision_1, revision.reply.revision_2); 1061 #endif /* AHADEBUG */ 1062 1063 switch (revision.reply.boardid) { 1064 case BOARD_1540_16HEAD_BIOS: 1065 case BOARD_1540_64HEAD_BIOS: 1066 case BOARD_1540: 1067 strcpy(sc->sc_model, "1540"); 1068 break; 1069 case BOARD_1542: 1070 strcpy(sc->sc_model, "1540A/1542A/1542B"); 1071 break; 1072 case BOARD_1640: 1073 strcpy(sc->sc_model, "1640"); 1074 break; 1075 case BOARD_1740: 1076 strcpy(sc->sc_model, "1740"); 1077 break; 1078 case BOARD_1542C: 1079 strcpy(sc->sc_model, "1542C"); 1080 break; 1081 case BOARD_1542CF: 1082 strcpy(sc->sc_model, "1542CF"); 1083 break; 1084 case BOARD_1542CP: 1085 strcpy(sc->sc_model, "1542CP"); 1086 break; 1087 } 1088 1089 p = sc->sc_firmware; 1090 *p++ = revision.reply.revision_1; 1091 *p++ = '.'; 1092 *p++ = revision.reply.revision_2; 1093 *p = '\0'; 1094 1095 noinquire: 1096 printf("%s: model AHA-%s, firmware %s\n", 1097 sc->sc_dev.dv_xname, 1098 sc->sc_model, sc->sc_firmware); 1099 } 1100 1101 static void 1102 ahaminphys(struct buf *bp) 1103 { 1104 1105 if (bp->b_bcount > AHA_MAXXFER) 1106 bp->b_bcount = AHA_MAXXFER; 1107 minphys(bp); 1108 } 1109 1110 /* 1111 * start a scsi operation given the command and the data address. Also needs 1112 * the unit, target and lu. 1113 */ 1114 1115 static void 1116 aha_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 1117 void *arg) 1118 { 1119 struct scsipi_xfer *xs; 1120 struct scsipi_periph *periph; 1121 struct aha_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1122 bus_dma_tag_t dmat = sc->sc_dmat; 1123 struct aha_ccb *ccb; 1124 int error, seg, flags, s; 1125 1126 1127 switch (req) { 1128 case ADAPTER_REQ_RUN_XFER: 1129 xs = arg; 1130 periph = xs->xs_periph; 1131 flags = xs->xs_control; 1132 1133 SC_DEBUG(periph, SCSIPI_DB2, ("aha_scsipi_request\n")); 1134 1135 /* Get a CCB to use. */ 1136 ccb = aha_get_ccb(sc); 1137 #ifdef DIAGNOSTIC 1138 /* 1139 * This should never happen as we track the resources 1140 * in the mid-layer. 1141 */ 1142 if (ccb == NULL) { 1143 scsipi_printaddr(periph); 1144 printf("unable to allocate ccb\n"); 1145 panic("aha_scsipi_request"); 1146 } 1147 #endif 1148 1149 ccb->xs = xs; 1150 ccb->timeout = xs->timeout; 1151 1152 /* 1153 * Put all the arguments for the xfer in the ccb 1154 */ 1155 if (flags & XS_CTL_RESET) { 1156 ccb->opcode = AHA_RESET_CCB; 1157 ccb->scsi_cmd_length = 0; 1158 } else { 1159 /* can't use S/G if zero length */ 1160 if (xs->cmdlen > sizeof(ccb->scsi_cmd)) { 1161 printf("%s: cmdlen %d too large for CCB\n", 1162 sc->sc_dev.dv_xname, xs->cmdlen); 1163 xs->error = XS_DRIVER_STUFFUP; 1164 goto out_bad; 1165 } 1166 ccb->opcode = (xs->datalen ? AHA_INIT_SCAT_GATH_CCB 1167 : AHA_INITIATOR_CCB); 1168 memcpy(&ccb->scsi_cmd, xs->cmd, 1169 ccb->scsi_cmd_length = xs->cmdlen); 1170 } 1171 1172 if (xs->datalen) { 1173 /* 1174 * Map the DMA transfer. 1175 */ 1176 #ifdef TFS 1177 if (flags & XS_CTL_DATA_UIO) { 1178 error = bus_dmamap_load_uio(dmat, 1179 ccb->dmamap_xfer, (struct uio *)xs->data, 1180 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 1181 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 1182 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 1183 BUS_DMA_WRITE)); 1184 } else 1185 #endif 1186 { 1187 error = bus_dmamap_load(dmat, 1188 ccb->dmamap_xfer, xs->data, xs->datalen, 1189 NULL, 1190 ((flags & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : 1191 BUS_DMA_WAITOK) | BUS_DMA_STREAMING | 1192 ((flags & XS_CTL_DATA_IN) ? BUS_DMA_READ : 1193 BUS_DMA_WRITE)); 1194 } 1195 1196 switch (error) { 1197 case 0: 1198 break; 1199 1200 case ENOMEM: 1201 case EAGAIN: 1202 xs->error = XS_RESOURCE_SHORTAGE; 1203 goto out_bad; 1204 1205 default: 1206 xs->error = XS_DRIVER_STUFFUP; 1207 if (error == EFBIG) { 1208 printf("%s: aha_scsi_cmd, more than %d" 1209 " DMA segments\n", 1210 sc->sc_dev.dv_xname, AHA_NSEG); 1211 } else { 1212 printf("%s: error %d loading DMA map\n", 1213 sc->sc_dev.dv_xname, error); 1214 } 1215 out_bad: 1216 aha_free_ccb(sc, ccb); 1217 scsipi_done(xs); 1218 return; 1219 } 1220 1221 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 0, 1222 ccb->dmamap_xfer->dm_mapsize, 1223 (flags & XS_CTL_DATA_IN) ? BUS_DMASYNC_PREREAD : 1224 BUS_DMASYNC_PREWRITE); 1225 1226 /* 1227 * Load the hardware scatter/gather map with the 1228 * contents of the DMA map. 1229 */ 1230 for (seg = 0; seg < ccb->dmamap_xfer->dm_nsegs; seg++) { 1231 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_addr, 1232 ccb->scat_gath[seg].seg_addr); 1233 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_len, 1234 ccb->scat_gath[seg].seg_len); 1235 } 1236 1237 ltophys(sc->sc_dmamap_control->dm_segs[0].ds_addr + 1238 AHA_CCB_OFF(ccb) + 1239 offsetof(struct aha_ccb, scat_gath), 1240 ccb->data_addr); 1241 ltophys(ccb->dmamap_xfer->dm_nsegs * 1242 sizeof(struct aha_scat_gath), ccb->data_length); 1243 } else { 1244 /* 1245 * No data xfer, use non S/G values. 1246 */ 1247 ltophys(0, ccb->data_addr); 1248 ltophys(0, ccb->data_length); 1249 } 1250 1251 ccb->data_out = 0; 1252 ccb->data_in = 0; 1253 ccb->target = periph->periph_target; 1254 ccb->lun = periph->periph_lun; 1255 ccb->req_sense_length = sizeof(ccb->scsi_sense); 1256 ccb->host_stat = 0x00; 1257 ccb->target_stat = 0x00; 1258 ccb->link_id = 0; 1259 ltophys(0, ccb->link_addr); 1260 1261 bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap_control, 1262 AHA_CCB_OFF(ccb), sizeof(struct aha_ccb), 1263 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1264 1265 s = splbio(); 1266 aha_queue_ccb(sc, ccb); 1267 splx(s); 1268 1269 SC_DEBUG(periph, SCSIPI_DB3, ("cmd_sent\n")); 1270 if ((flags & XS_CTL_POLL) == 0) 1271 return; 1272 1273 /* Not allowed to use interrupts, poll for completion. */ 1274 if (aha_poll(sc, xs, ccb->timeout)) { 1275 aha_timeout(ccb); 1276 if (aha_poll(sc, xs, ccb->timeout)) 1277 aha_timeout(ccb); 1278 } 1279 return; 1280 1281 case ADAPTER_REQ_GROW_RESOURCES: 1282 /* XXX Not supported. */ 1283 return; 1284 1285 case ADAPTER_REQ_SET_XFER_MODE: 1286 /* 1287 * Can't really do this on the Adaptec; it has 1288 * its own config mechanism, but we do know how 1289 * to query what the firmware negotiated. 1290 */ 1291 /* XXX XXX XXX */ 1292 return; 1293 } 1294 } 1295 1296 /* 1297 * Poll a particular unit, looking for a particular xs 1298 */ 1299 static int 1300 aha_poll(struct aha_softc *sc, struct scsipi_xfer *xs, int count) 1301 { 1302 bus_space_tag_t iot = sc->sc_iot; 1303 bus_space_handle_t ioh = sc->sc_ioh; 1304 1305 /* timeouts are in msec, so we loop in 1000 usec cycles */ 1306 while (count) { 1307 /* 1308 * If we had interrupts enabled, would we 1309 * have got an interrupt? 1310 */ 1311 if (bus_space_read_1(iot, ioh, AHA_INTR_PORT) & AHA_INTR_ANYINTR) 1312 aha_intr(sc); 1313 if (xs->xs_status & XS_STS_DONE) 1314 return (0); 1315 delay(1000); /* only happens in boot so ok */ 1316 count--; 1317 } 1318 return (1); 1319 } 1320 1321 static void 1322 aha_timeout(void *arg) 1323 { 1324 struct aha_ccb *ccb = arg; 1325 struct scsipi_xfer *xs = ccb->xs; 1326 struct scsipi_periph *periph = xs->xs_periph; 1327 struct aha_softc *sc = 1328 (void *)periph->periph_channel->chan_adapter->adapt_dev; 1329 int s; 1330 1331 scsipi_printaddr(periph); 1332 printf("timed out"); 1333 1334 s = splbio(); 1335 1336 #ifdef AHADIAG 1337 /* 1338 * If The ccb's mbx is not free, then the board has gone south? 1339 */ 1340 aha_collect_mbo(sc); 1341 if (ccb->flags & CCB_SENDING) { 1342 printf("%s: not taking commands!\n", sc->sc_dev.dv_xname); 1343 Debugger(); 1344 } 1345 #endif 1346 1347 /* 1348 * If it has been through before, then 1349 * a previous abort has failed, don't 1350 * try abort again 1351 */ 1352 if (ccb->flags & CCB_ABORT) { 1353 /* abort timed out */ 1354 printf(" AGAIN\n"); 1355 /* XXX Must reset! */ 1356 } else { 1357 /* abort the operation that has timed out */ 1358 printf("\n"); 1359 ccb->xs->error = XS_TIMEOUT; 1360 ccb->timeout = AHA_ABORT_TIMEOUT; 1361 ccb->flags |= CCB_ABORT; 1362 aha_queue_ccb(sc, ccb); 1363 } 1364 1365 splx(s); 1366 }
Cache object: 7e4b506715413f7b5abbe28d2136f281
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]