aha.c revision 1.10
1 /* $NetBSD: aha.c,v 1.10 1997/11/04 05:58:22 thorpej Exp $ */ 2 3 #undef AHADIAG 4 #ifdef DDB 5 #define integrate 6 #else 7 #define integrate static inline 8 #endif 9 10 /*- 11 * Copyright (c) 1997 The NetBSD Foundation, Inc. 12 * All rights reserved. 13 * 14 * This code is derived from software contributed to The NetBSD Foundation 15 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 16 * NASA Ames Research Center. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 3. All advertising materials mentioning features or use of this software 27 * must display the following acknowledgement: 28 * This product includes software developed by the NetBSD 29 * Foundation, Inc. and its contributors. 30 * 4. Neither the name of The NetBSD Foundation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 35 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 36 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 37 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 38 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 39 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 40 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 41 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 42 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 43 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 44 * POSSIBILITY OF SUCH DAMAGE. 45 */ 46 47 /* 48 * Copyright (c) 1994, 1996, 1997 Charles M. Hannum. All rights reserved. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 3. All advertising materials mentioning features or use of this software 59 * must display the following acknowledgement: 60 * This product includes software developed by Charles M. Hannum. 61 * 4. The name of the author may not be used to endorse or promote products 62 * derived from this software without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 65 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 66 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 67 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 68 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 69 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 70 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 71 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 72 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 73 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 74 */ 75 76 /* 77 * Originally written by Julian Elischer (julian (at) tfs.com) 78 * for TRW Financial Systems for use under the MACH(2.5) operating system. 79 * 80 * TRW Financial Systems, in accordance with their agreement with Carnegie 81 * Mellon University, makes this software available to CMU to distribute 82 * or use in any manner that they see fit as long as this message is kept with 83 * the software. For this reason TFS also grants any other persons or 84 * organisations permission to use or modify this software. 85 * 86 * TFS supplies this software to be publicly redistributed 87 * on the understanding that TFS is not responsible for the correct 88 * functioning of this software in any circumstances. 89 */ 90 91 #include <sys/types.h> 92 #include <sys/param.h> 93 #include <sys/systm.h> 94 #include <sys/kernel.h> 95 #include <sys/errno.h> 96 #include <sys/ioctl.h> 97 #include <sys/device.h> 98 #include <sys/malloc.h> 99 #include <sys/buf.h> 100 #include <sys/proc.h> 101 #include <sys/user.h> 102 103 #include <machine/bus.h> 104 #include <machine/intr.h> 105 106 #include <dev/scsipi/scsi_all.h> 107 #include <dev/scsipi/scsipi_all.h> 108 #include <dev/scsipi/scsiconf.h> 109 110 #include <dev/ic/ahareg.h> 111 #include <dev/ic/ahavar.h> 112 113 #ifndef DDB 114 #define Debugger() panic("should call debugger here (aha1542.c)") 115 #endif /* ! DDB */ 116 117 #define AHA_MAXXFER ((AHA_NSEG - 1) << PGSHIFT) 118 119 #ifdef AHADEBUG 120 int aha_debug = 1; 121 #endif /* AHADEBUG */ 122 123 int aha_cmd __P((bus_space_tag_t, bus_space_handle_t, struct aha_softc *, int, 124 u_char *, int, u_char *)); 125 integrate void aha_finish_ccbs __P((struct aha_softc *)); 126 integrate void aha_reset_ccb __P((struct aha_softc *, struct aha_ccb *)); 127 void aha_free_ccb __P((struct aha_softc *, struct aha_ccb *)); 128 integrate int aha_init_ccb __P((struct aha_softc *, struct aha_ccb *)); 129 struct aha_ccb *aha_get_ccb __P((struct aha_softc *, int)); 130 struct aha_ccb *aha_ccb_phys_kv __P((struct aha_softc *, u_long)); 131 void aha_queue_ccb __P((struct aha_softc *, struct aha_ccb *)); 132 void aha_collect_mbo __P((struct aha_softc *)); 133 void aha_start_ccbs __P((struct aha_softc *)); 134 void aha_done __P((struct aha_softc *, struct aha_ccb *)); 135 void aha_init __P((struct aha_softc *)); 136 void aha_inquire_setup_information __P((struct aha_softc *)); 137 void ahaminphys __P((struct buf *)); 138 int aha_scsi_cmd __P((struct scsipi_xfer *)); 139 int aha_poll __P((struct aha_softc *, struct scsipi_xfer *, int)); 140 void aha_timeout __P((void *arg)); 141 int aha_create_ccbs __P((struct aha_softc *, void *, size_t, int)); 142 void aha_enqueue __P((struct aha_softc *, struct scsipi_xfer *, int)); 143 struct scsipi_xfer *aha_dequeue __P((struct aha_softc *)); 144 145 struct scsipi_adapter aha_switch = { 146 aha_scsi_cmd, 147 ahaminphys, 148 0, 149 0, 150 }; 151 152 /* the below structure is so we have a default dev struct for out link struct */ 153 struct scsipi_device aha_dev = { 154 NULL, /* Use default error handler */ 155 NULL, /* have a queue, served by this */ 156 NULL, /* have no async handler */ 157 NULL, /* Use default 'done' routine */ 158 }; 159 160 struct cfdriver aha_cd = { 161 NULL, "aha", DV_DULL 162 }; 163 164 #define AHA_RESET_TIMEOUT 2000 /* time to wait for reset (mSec) */ 165 #define AHA_ABORT_TIMEOUT 2000 /* time to wait for abort (mSec) */ 166 167 /* XXX Should put this in a better place. */ 168 #define offsetof(type, member) ((size_t)(&((type *)0)->member)) 169 170 /* 171 * Insert a scsipi_xfer into the software queue. We overload xs->free_list 172 * to avoid having to allocate additional resources (since we're used 173 * only during resource shortages anyhow. 174 */ 175 void 176 aha_enqueue(sc, xs, infront) 177 struct aha_softc *sc; 178 struct scsipi_xfer *xs; 179 int infront; 180 { 181 182 if (infront || sc->sc_queue.lh_first == NULL) { 183 if (sc->sc_queue.lh_first == NULL) 184 sc->sc_queuelast = xs; 185 LIST_INSERT_HEAD(&sc->sc_queue, xs, free_list); 186 return; 187 } 188 189 LIST_INSERT_AFTER(sc->sc_queuelast, xs, free_list); 190 sc->sc_queuelast = xs; 191 } 192 193 /* 194 * Pull a scsipi_xfer off the front of the software queue. 195 */ 196 struct scsipi_xfer * 197 aha_dequeue(sc) 198 struct aha_softc *sc; 199 { 200 struct scsipi_xfer *xs; 201 202 xs = sc->sc_queue.lh_first; 203 LIST_REMOVE(xs, free_list); 204 205 if (sc->sc_queue.lh_first == NULL) 206 sc->sc_queuelast = NULL; 207 208 return (xs); 209 } 210 211 /* 212 * aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 213 * 214 * Activate Adapter command 215 * icnt: number of args (outbound bytes including opcode) 216 * ibuf: argument buffer 217 * ocnt: number of expected returned bytes 218 * obuf: result buffer 219 * wait: number of seconds to wait for response 220 * 221 * Performs an adapter command through the ports. Not to be confused with a 222 * scsi command, which is read in via the dma; one of the adapter commands 223 * tells it to read in a scsi command. 224 */ 225 int 226 aha_cmd(iot, ioh, sc, icnt, ibuf, ocnt, obuf) 227 bus_space_tag_t iot; 228 bus_space_handle_t ioh; 229 struct aha_softc *sc; 230 int icnt, ocnt; 231 u_char *ibuf, *obuf; 232 { 233 const char *name; 234 register int i; 235 int wait; 236 u_char sts; 237 u_char opcode = ibuf[0]; 238 239 if (sc != NULL) 240 name = sc->sc_dev.dv_xname; 241 else 242 name = "(aha probe)"; 243 244 /* 245 * Calculate a reasonable timeout for the command. 246 */ 247 switch (opcode) { 248 case AHA_INQUIRE_DEVICES: 249 wait = 90 * 20000; 250 break; 251 default: 252 wait = 1 * 20000; 253 break; 254 } 255 256 /* 257 * Wait for the adapter to go idle, unless it's one of 258 * the commands which don't need this 259 */ 260 if (opcode != AHA_MBO_INTR_EN) { 261 for (i = 20000; i; i--) { /* 1 sec? */ 262 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 263 if (sts & AHA_STAT_IDLE) 264 break; 265 delay(50); 266 } 267 if (!i) { 268 printf("%s: aha_cmd, host not idle(0x%x)\n", 269 name, sts); 270 return (1); 271 } 272 } 273 /* 274 * Now that it is idle, if we expect output, preflush the 275 * queue feeding to us. 276 */ 277 if (ocnt) { 278 while ((bus_space_read_1(iot, ioh, AHA_STAT_PORT)) & AHA_STAT_DF) 279 bus_space_read_1(iot, ioh, AHA_DATA_PORT); 280 } 281 /* 282 * Output the command and the number of arguments given 283 * for each byte, first check the port is empty. 284 */ 285 while (icnt--) { 286 for (i = wait; i; i--) { 287 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 288 if (!(sts & AHA_STAT_CDF)) 289 break; 290 delay(50); 291 } 292 if (!i) { 293 if (opcode != AHA_INQUIRE_REVISION) 294 printf("%s: aha_cmd, cmd/data port full\n", name); 295 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 296 return (1); 297 } 298 bus_space_write_1(iot, ioh, AHA_CMD_PORT, *ibuf++); 299 } 300 /* 301 * If we expect input, loop that many times, each time, 302 * looking for the data register to have valid data 303 */ 304 while (ocnt--) { 305 for (i = wait; i; i--) { 306 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 307 if (sts & AHA_STAT_DF) 308 break; 309 delay(50); 310 } 311 if (!i) { 312 if (opcode != AHA_INQUIRE_REVISION) 313 printf("%s: aha_cmd, cmd/data port empty %d\n", 314 name, ocnt); 315 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_SRST); 316 return (1); 317 } 318 *obuf++ = bus_space_read_1(iot, ioh, AHA_DATA_PORT); 319 } 320 /* 321 * Wait for the board to report a finished instruction. 322 * We may get an extra interrupt for the HACC signal, but this is 323 * unimportant. 324 */ 325 if (opcode != AHA_MBO_INTR_EN) { 326 for (i = 20000; i; i--) { /* 1 sec? */ 327 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 328 /* XXX Need to save this in the interrupt handler? */ 329 if (sts & AHA_INTR_HACC) 330 break; 331 delay(50); 332 } 333 if (!i) { 334 printf("%s: aha_cmd, host not finished(0x%x)\n", 335 name, sts); 336 return (1); 337 } 338 } 339 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 340 return (0); 341 } 342 343 void 344 aha_attach(sc, apd) 345 struct aha_softc *sc; 346 struct aha_probe_data *apd; 347 { 348 349 TAILQ_INIT(&sc->sc_free_ccb); 350 TAILQ_INIT(&sc->sc_waiting_ccb); 351 LIST_INIT(&sc->sc_queue); 352 353 /* 354 * fill in the prototype scsipi_link. 355 */ 356 sc->sc_link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; 357 sc->sc_link.adapter_softc = sc; 358 sc->sc_link.scsipi_scsi.adapter_target = apd->sc_scsi_dev; 359 sc->sc_link.adapter = &aha_switch; 360 sc->sc_link.device = &aha_dev; 361 sc->sc_link.openings = 2; 362 sc->sc_link.scsipi_scsi.max_target = 7; 363 sc->sc_link.type = BUS_SCSI; 364 365 aha_inquire_setup_information(sc); 366 aha_init(sc); 367 368 /* 369 * ask the adapter what subunits are present 370 */ 371 config_found(&sc->sc_dev, &sc->sc_link, scsiprint); 372 } 373 374 integrate void 375 aha_finish_ccbs(sc) 376 struct aha_softc *sc; 377 { 378 struct aha_mbx_in *wmbi; 379 struct aha_ccb *ccb; 380 int i; 381 382 wmbi = wmbx->tmbi; 383 384 if (wmbi->stat == AHA_MBI_FREE) { 385 for (i = 0; i < AHA_MBX_SIZE; i++) { 386 if (wmbi->stat != AHA_MBI_FREE) { 387 printf("%s: mbi not in round-robin order\n", 388 sc->sc_dev.dv_xname); 389 goto AGAIN; 390 } 391 aha_nextmbx(wmbi, wmbx, mbi); 392 } 393 #ifdef AHADIAGnot 394 printf("%s: mbi interrupt with no full mailboxes\n", 395 sc->sc_dev.dv_xname); 396 #endif 397 return; 398 } 399 400 AGAIN: 401 do { 402 ccb = aha_ccb_phys_kv(sc, phystol(wmbi->ccb_addr)); 403 if (!ccb) { 404 printf("%s: bad mbi ccb pointer; skipping\n", 405 sc->sc_dev.dv_xname); 406 goto next; 407 } 408 409 #ifdef AHADEBUG 410 if (aha_debug) { 411 u_char *cp = &ccb->scsi_cmd; 412 printf("op=%x %x %x %x %x %x\n", 413 cp[0], cp[1], cp[2], cp[3], cp[4], cp[5]); 414 printf("stat %x for mbi addr = 0x%08x, ", 415 wmbi->stat, wmbi); 416 printf("ccb addr = 0x%x\n", ccb); 417 } 418 #endif /* AHADEBUG */ 419 420 switch (wmbi->stat) { 421 case AHA_MBI_OK: 422 case AHA_MBI_ERROR: 423 if ((ccb->flags & CCB_ABORT) != 0) { 424 /* 425 * If we already started an abort, wait for it 426 * to complete before clearing the CCB. We 427 * could instead just clear CCB_SENDING, but 428 * what if the mailbox was already received? 429 * The worst that happens here is that we clear 430 * the CCB a bit later than we need to. BFD. 431 */ 432 goto next; 433 } 434 break; 435 436 case AHA_MBI_ABORT: 437 case AHA_MBI_UNKNOWN: 438 /* 439 * Even if the CCB wasn't found, we clear it anyway. 440 * See preceeding comment. 441 */ 442 break; 443 444 default: 445 printf("%s: bad mbi status %02x; skipping\n", 446 sc->sc_dev.dv_xname, wmbi->stat); 447 goto next; 448 } 449 450 untimeout(aha_timeout, ccb); 451 aha_done(sc, ccb); 452 453 next: 454 wmbi->stat = AHA_MBI_FREE; 455 aha_nextmbx(wmbi, wmbx, mbi); 456 } while (wmbi->stat != AHA_MBI_FREE); 457 458 wmbx->tmbi = wmbi; 459 } 460 461 /* 462 * Catch an interrupt from the adaptor 463 */ 464 int 465 aha_intr(arg) 466 void *arg; 467 { 468 struct aha_softc *sc = arg; 469 bus_space_tag_t iot = sc->sc_iot; 470 bus_space_handle_t ioh = sc->sc_ioh; 471 u_char sts; 472 473 #ifdef AHADEBUG 474 printf("%s: aha_intr ", sc->sc_dev.dv_xname); 475 #endif /*AHADEBUG */ 476 477 /* 478 * First acknowlege the interrupt, Then if it's not telling about 479 * a completed operation just return. 480 */ 481 sts = bus_space_read_1(iot, ioh, AHA_INTR_PORT); 482 if ((sts & AHA_INTR_ANYINTR) == 0) 483 return (0); 484 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_IRST); 485 486 #ifdef AHADIAG 487 /* Make sure we clear CCB_SENDING before finishing a CCB. */ 488 aha_collect_mbo(sc); 489 #endif 490 491 /* Mail box out empty? */ 492 if (sts & AHA_INTR_MBOA) { 493 struct aha_toggle toggle; 494 495 toggle.cmd.opcode = AHA_MBO_INTR_EN; 496 toggle.cmd.enable = 0; 497 aha_cmd(iot, ioh, sc, 498 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 499 0, (u_char *)0); 500 aha_start_ccbs(sc); 501 } 502 503 /* Mail box in full? */ 504 if (sts & AHA_INTR_MBIF) 505 aha_finish_ccbs(sc); 506 507 return (1); 508 } 509 510 integrate void 511 aha_reset_ccb(sc, ccb) 512 struct aha_softc *sc; 513 struct aha_ccb *ccb; 514 { 515 516 ccb->flags = 0; 517 } 518 519 /* 520 * A ccb is put onto the free list. 521 */ 522 void 523 aha_free_ccb(sc, ccb) 524 struct aha_softc *sc; 525 struct aha_ccb *ccb; 526 { 527 int s; 528 529 s = splbio(); 530 531 aha_reset_ccb(sc, ccb); 532 TAILQ_INSERT_HEAD(&sc->sc_free_ccb, ccb, chain); 533 534 /* 535 * If there were none, wake anybody waiting for one to come free, 536 * starting with queued entries. 537 */ 538 if (ccb->chain.tqe_next == 0) 539 wakeup(&sc->sc_free_ccb); 540 541 splx(s); 542 } 543 544 integrate int 545 aha_init_ccb(sc, ccb) 546 struct aha_softc *sc; 547 struct aha_ccb *ccb; 548 { 549 bus_dma_tag_t dmat = sc->sc_dmat; 550 int hashnum, error; 551 552 /* 553 * XXX Should we put a DIAGNOSTIC check for multiple 554 * XXX CCB inits here? 555 */ 556 557 bzero(ccb, sizeof(struct aha_ccb)); 558 559 /* 560 * Create DMA maps for this CCB. 561 */ 562 error = bus_dmamap_create(dmat, sizeof(struct aha_ccb), 1, 563 sizeof(struct aha_ccb), 0, BUS_DMA_NOWAIT, &ccb->dmamap_self); 564 if (error) { 565 printf("%s: can't create ccb dmamap_self\n", 566 sc->sc_dev.dv_xname); 567 return (error); 568 } 569 570 error = bus_dmamap_create(dmat, AHA_MAXXFER, AHA_NSEG, AHA_MAXXFER, 571 0, BUS_DMA_NOWAIT|BUS_DMA_ALLOCNOW, &ccb->dmamap_xfer); 572 if (error) { 573 printf("%s: can't create ccb dmamap_xfer\n", 574 sc->sc_dev.dv_xname); 575 bus_dmamap_destroy(dmat, ccb->dmamap_self); 576 return (error); 577 } 578 579 /* 580 * Load the permanent DMA maps. 581 */ 582 error = bus_dmamap_load(dmat, ccb->dmamap_self, ccb, 583 sizeof(struct aha_ccb), NULL, BUS_DMA_NOWAIT); 584 if (error) { 585 printf("%s: can't load ccb dmamap_self\n", 586 sc->sc_dev.dv_xname); 587 bus_dmamap_destroy(dmat, ccb->dmamap_self); 588 bus_dmamap_destroy(dmat, ccb->dmamap_xfer); 589 return (error); 590 } 591 592 /* 593 * put in the phystokv hash table 594 * Never gets taken out. 595 */ 596 ccb->hashkey = ccb->dmamap_self->dm_segs[0].ds_addr; 597 hashnum = CCB_HASH(ccb->hashkey); 598 ccb->nexthash = sc->sc_ccbhash[hashnum]; 599 sc->sc_ccbhash[hashnum] = ccb; 600 aha_reset_ccb(sc, ccb); 601 return (0); 602 } 603 604 /* 605 * Create a set of ccbs and add them to the free list. 606 */ 607 int 608 aha_create_ccbs(sc, mem, size, max_ccbs) 609 struct aha_softc *sc; 610 void *mem; 611 size_t size; 612 int max_ccbs; 613 { 614 bus_dma_segment_t seg; 615 struct aha_ccb *ccb; 616 int rseg, error; 617 618 if (sc->sc_numccbs >= AHA_CCB_MAX) 619 return (0); 620 621 if (max_ccbs > AHA_CCB_MAX) 622 max_ccbs = AHA_CCB_MAX; 623 624 if ((ccb = mem) != NULL) 625 goto have_mem; 626 627 size = NBPG; 628 error = bus_dmamem_alloc(sc->sc_dmat, size, NBPG, 0, &seg, 1, &rseg, 629 BUS_DMA_NOWAIT); 630 if (error) { 631 printf("%s: can't allocate memory for ccbs\n", 632 sc->sc_dev.dv_xname); 633 return (error); 634 } 635 636 error = bus_dmamem_map(sc->sc_dmat, &seg, rseg, size, 637 (caddr_t *)&ccb, BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC); 638 if (error) { 639 printf("%s: can't map memory for ccbs\n", 640 sc->sc_dev.dv_xname); 641 bus_dmamem_free(sc->sc_dmat, &seg, rseg); 642 return (error); 643 } 644 645 have_mem: 646 bzero(ccb, size); 647 while (size > sizeof(struct aha_ccb) && sc->sc_numccbs < max_ccbs) { 648 error = aha_init_ccb(sc, ccb); 649 if (error) { 650 printf("%s: can't initialize ccb\n", 651 sc->sc_dev.dv_xname); 652 return (error); 653 } 654 TAILQ_INSERT_TAIL(&sc->sc_free_ccb, ccb, chain); 655 (caddr_t)ccb += ALIGN(sizeof(struct aha_ccb)); 656 size -= ALIGN(sizeof(struct aha_ccb)); 657 sc->sc_numccbs++; 658 } 659 660 return (0); 661 } 662 663 /* 664 * Get a free ccb 665 * 666 * If there are none, see if we can allocate a new one. If so, put it in 667 * the hash table too otherwise either return an error or sleep. 668 */ 669 struct aha_ccb * 670 aha_get_ccb(sc, flags) 671 struct aha_softc *sc; 672 int flags; 673 { 674 struct aha_ccb *ccb; 675 int s; 676 677 s = splbio(); 678 679 /* 680 * If we can and have to, sleep waiting for one to come free 681 * but only if we can't allocate a new one. 682 */ 683 for (;;) { 684 ccb = sc->sc_free_ccb.tqh_first; 685 if (ccb) { 686 TAILQ_REMOVE(&sc->sc_free_ccb, ccb, chain); 687 break; 688 } 689 if (sc->sc_numccbs < AHA_CCB_MAX) { 690 /* 691 * aha_create_ccbs() might have managed to create 692 * one before it failed. If so, don't abort, 693 * just grab it and continue to hobble along. 694 */ 695 if (aha_create_ccbs(sc, NULL, 0, AHA_CCB_MAX) != 0 && 696 sc->sc_free_ccb.tqh_first == NULL) { 697 printf("%s: can't allocate ccbs\n", 698 sc->sc_dev.dv_xname); 699 goto out; 700 } 701 continue; 702 } 703 if ((flags & SCSI_NOSLEEP) != 0) 704 goto out; 705 tsleep(&sc->sc_free_ccb, PRIBIO, "ahaccb", 0); 706 } 707 708 ccb->flags |= CCB_ALLOC; 709 710 out: 711 splx(s); 712 return (ccb); 713 } 714 715 /* 716 * Given a physical address, find the ccb that it corresponds to. 717 */ 718 struct aha_ccb * 719 aha_ccb_phys_kv(sc, ccb_phys) 720 struct aha_softc *sc; 721 u_long ccb_phys; 722 { 723 int hashnum = CCB_HASH(ccb_phys); 724 struct aha_ccb *ccb = sc->sc_ccbhash[hashnum]; 725 726 while (ccb) { 727 if (ccb->hashkey == ccb_phys) 728 break; 729 ccb = ccb->nexthash; 730 } 731 return (ccb); 732 } 733 734 /* 735 * Queue a CCB to be sent to the controller, and send it if possible. 736 */ 737 void 738 aha_queue_ccb(sc, ccb) 739 struct aha_softc *sc; 740 struct aha_ccb *ccb; 741 { 742 743 TAILQ_INSERT_TAIL(&sc->sc_waiting_ccb, ccb, chain); 744 aha_start_ccbs(sc); 745 } 746 747 /* 748 * Garbage collect mailboxes that are no longer in use. 749 */ 750 void 751 aha_collect_mbo(sc) 752 struct aha_softc *sc; 753 { 754 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 755 #ifdef AHADIAG 756 struct aha_ccb *ccb; 757 #endif 758 759 wmbo = wmbx->cmbo; 760 761 while (sc->sc_mbofull > 0) { 762 if (wmbo->cmd != AHA_MBO_FREE) 763 break; 764 765 #ifdef AHADIAG 766 ccb = aha_ccb_phys_kv(sc, phystol(wmbo->ccb_addr)); 767 ccb->flags &= ~CCB_SENDING; 768 #endif 769 770 --sc->sc_mbofull; 771 aha_nextmbx(wmbo, wmbx, mbo); 772 } 773 774 wmbx->cmbo = wmbo; 775 } 776 777 /* 778 * Send as many CCBs as we have empty mailboxes for. 779 */ 780 void 781 aha_start_ccbs(sc) 782 struct aha_softc *sc; 783 { 784 bus_space_tag_t iot = sc->sc_iot; 785 bus_space_handle_t ioh = sc->sc_ioh; 786 struct aha_mbx_out *wmbo; /* Mail Box Out pointer */ 787 struct aha_ccb *ccb; 788 789 wmbo = wmbx->tmbo; 790 791 while ((ccb = sc->sc_waiting_ccb.tqh_first) != NULL) { 792 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 793 aha_collect_mbo(sc); 794 if (sc->sc_mbofull >= AHA_MBX_SIZE) { 795 struct aha_toggle toggle; 796 797 toggle.cmd.opcode = AHA_MBO_INTR_EN; 798 toggle.cmd.enable = 1; 799 aha_cmd(iot, ioh, sc, 800 sizeof(toggle.cmd), (u_char *)&toggle.cmd, 801 0, (u_char *)0); 802 break; 803 } 804 } 805 806 TAILQ_REMOVE(&sc->sc_waiting_ccb, ccb, chain); 807 #ifdef AHADIAG 808 ccb->flags |= CCB_SENDING; 809 #endif 810 811 /* Link ccb to mbo. */ 812 ltophys(ccb->dmamap_self->dm_segs[0].ds_addr, wmbo->ccb_addr); 813 if (ccb->flags & CCB_ABORT) 814 wmbo->cmd = AHA_MBO_ABORT; 815 else 816 wmbo->cmd = AHA_MBO_START; 817 818 /* Tell the card to poll immediately. */ 819 bus_space_write_1(iot, ioh, AHA_CMD_PORT, AHA_START_SCSI); 820 821 if ((ccb->xs->flags & SCSI_POLL) == 0) 822 timeout(aha_timeout, ccb, (ccb->timeout * hz) / 1000); 823 824 ++sc->sc_mbofull; 825 aha_nextmbx(wmbo, wmbx, mbo); 826 } 827 828 wmbx->tmbo = wmbo; 829 } 830 831 /* 832 * We have a ccb which has been processed by the 833 * adaptor, now we look to see how the operation 834 * went. Wake up the owner if waiting 835 */ 836 void 837 aha_done(sc, ccb) 838 struct aha_softc *sc; 839 struct aha_ccb *ccb; 840 { 841 bus_dma_tag_t dmat = sc->sc_dmat; 842 struct scsipi_sense_data *s1, *s2; 843 struct scsipi_xfer *xs = ccb->xs; 844 845 SC_DEBUG(xs->sc_link, SDEV_DB2, ("aha_done\n")); 846 847 /* 848 * If we were a data transfer, unload the map that described 849 * the data buffer. 850 */ 851 if (xs->datalen) { 852 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 853 (xs->flags & SCSI_DATA_IN) ? BUS_DMASYNC_POSTREAD : 854 BUS_DMASYNC_POSTWRITE); 855 bus_dmamap_unload(dmat, ccb->dmamap_xfer); 856 } 857 858 /* 859 * Otherwise, put the results of the operation 860 * into the xfer and call whoever started it 861 */ 862 #ifdef AHADIAG 863 if (ccb->flags & CCB_SENDING) { 864 printf("%s: exiting ccb still in transit!\n", sc->sc_dev.dv_xname); 865 Debugger(); 866 return; 867 } 868 #endif 869 if ((ccb->flags & CCB_ALLOC) == 0) { 870 printf("%s: exiting ccb not allocated!\n", sc->sc_dev.dv_xname); 871 Debugger(); 872 return; 873 } 874 if (xs->error == XS_NOERROR) { 875 if (ccb->host_stat != AHA_OK) { 876 switch (ccb->host_stat) { 877 case AHA_SEL_TIMEOUT: /* No response */ 878 xs->error = XS_SELTIMEOUT; 879 break; 880 default: /* Other scsi protocol messes */ 881 printf("%s: host_stat %x\n", 882 sc->sc_dev.dv_xname, ccb->host_stat); 883 xs->error = XS_DRIVER_STUFFUP; 884 break; 885 } 886 } else if (ccb->target_stat != SCSI_OK) { 887 switch (ccb->target_stat) { 888 case SCSI_CHECK: 889 s1 = (struct scsipi_sense_data *) (((char *) (&ccb->scsi_cmd)) + 890 ccb->scsi_cmd_length); 891 s2 = &xs->sense.scsi_sense; 892 *s2 = *s1; 893 xs->error = XS_SENSE; 894 break; 895 case SCSI_BUSY: 896 xs->error = XS_BUSY; 897 break; 898 default: 899 printf("%s: target_stat %x\n", 900 sc->sc_dev.dv_xname, ccb->target_stat); 901 xs->error = XS_DRIVER_STUFFUP; 902 break; 903 } 904 } else 905 xs->resid = 0; 906 } 907 aha_free_ccb(sc, ccb); 908 xs->flags |= ITSDONE; 909 scsipi_done(xs); 910 911 /* 912 * If there are queue entries in the software queue, try to 913 * run the first one. We should be more or less guaranteed 914 * to succeed, since we just freed a CCB. 915 * 916 * NOTE: aha_scsi_cmd() relies on our calling it with 917 * the first entry in the queue. 918 */ 919 if ((xs = sc->sc_queue.lh_first) != NULL) 920 (void) aha_scsi_cmd(xs); 921 } 922 923 /* 924 * Find the board and find its irq/drq 925 */ 926 int 927 aha_find(iot, ioh, sc) 928 bus_space_tag_t iot; 929 bus_space_handle_t ioh; 930 struct aha_probe_data *sc; 931 { 932 int i; 933 u_char sts; 934 struct aha_config config; 935 int irq, drq; 936 937 /* 938 * reset board, If it doesn't respond, assume 939 * that it's not there.. good for the probe 940 */ 941 942 bus_space_write_1(iot, ioh, AHA_CTRL_PORT, AHA_CTRL_HRST | AHA_CTRL_SRST); 943 944 delay(100); 945 for (i = AHA_RESET_TIMEOUT; i; i--) { 946 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 947 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 948 break; 949 delay(1000); /* calibrated in msec */ 950 } 951 if (!i) { 952 #ifdef AHADEBUG 953 if (aha_debug) 954 printf("aha_find: No answer from adaptec board\n"); 955 #endif /* AHADEBUG */ 956 return (0); 957 } 958 959 /* 960 * setup dma channel from jumpers and save int 961 * level 962 */ 963 delay(1000); /* for Bustek 545 */ 964 config.cmd.opcode = AHA_INQUIRE_CONFIG; 965 aha_cmd(iot, ioh, (struct aha_softc *)0, 966 sizeof(config.cmd), (u_char *)&config.cmd, 967 sizeof(config.reply), (u_char *)&config.reply); 968 switch (config.reply.chan) { 969 case EISADMA: 970 drq = -1; 971 break; 972 case CHAN0: 973 drq = 0; 974 break; 975 case CHAN5: 976 drq = 5; 977 break; 978 case CHAN6: 979 drq = 6; 980 break; 981 case CHAN7: 982 drq = 7; 983 break; 984 default: 985 printf("aha_find: illegal drq setting %x\n", config.reply.chan); 986 return (0); 987 } 988 989 switch (config.reply.intr) { 990 case INT9: 991 irq = 9; 992 break; 993 case INT10: 994 irq = 10; 995 break; 996 case INT11: 997 irq = 11; 998 break; 999 case INT12: 1000 irq = 12; 1001 break; 1002 case INT14: 1003 irq = 14; 1004 break; 1005 case INT15: 1006 irq = 15; 1007 break; 1008 default: 1009 printf("aha_find: illegal irq setting %x\n", config.reply.intr); 1010 return (0); 1011 } 1012 1013 if (sc) { 1014 sc->sc_irq = irq; 1015 sc->sc_drq = drq; 1016 sc->sc_scsi_dev = config.reply.scsi_dev; 1017 } 1018 1019 return (1); 1020 } 1021 1022 /* 1023 * Start the board, ready for normal operation 1024 */ 1025 void 1026 aha_init(sc) 1027 struct aha_softc *sc; 1028 { 1029 bus_space_tag_t iot = sc->sc_iot; 1030 bus_space_handle_t ioh = sc->sc_ioh; 1031 bus_dma_segment_t seg; 1032 struct aha_devices devices; 1033 struct aha_setup setup; 1034 struct aha_mailbox mailbox; 1035 int i, j, initial_ccbs, rseg; 1036 1037 /* 1038 * XXX 1039 * If we are a 1542C or later, disable the extended BIOS so that the 1040 * mailbox interface is unlocked. 1041 * No need to check the extended BIOS flags as some of the 1042 * extensions that cause us problems are not flagged in that byte. 1043 */ 1044 if (!strncmp(sc->sc_model, "1542C", 5)) { 1045 struct aha_extbios extbios; 1046 struct aha_unlock unlock; 1047 1048 printf("%s: unlocking mailbox interface\n", sc->sc_dev.dv_xname); 1049 extbios.cmd.opcode = AHA_EXT_BIOS; 1050 aha_cmd(iot, ioh, sc, 1051 sizeof(extbios.cmd), (u_char *)&extbios.cmd, 1052 sizeof(extbios.reply), (u_char *)&extbios.reply); 1053 1054 #ifdef AHADEBUG 1055 printf("%s: flags=%02x, mailboxlock=%02x\n", 1056 sc->sc_dev.dv_xname, 1057 extbios.reply.flags, extbios.reply.mailboxlock); 1058 #endif /* AHADEBUG */ 1059 1060 unlock.cmd.opcode = AHA_MBX_ENABLE; 1061 unlock.cmd.junk = 0; 1062 unlock.cmd.magic = extbios.reply.mailboxlock; 1063 aha_cmd(iot, ioh, sc, 1064 sizeof(unlock.cmd), (u_char *)&unlock.cmd, 1065 0, (u_char *)0); 1066 } 1067 1068 #if 0 1069 /* 1070 * Change the bus on/off times to not clash with other dma users. 1071 */ 1072 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_ON_TIME_SET, 7); 1073 aha_cmd(iot, ioh, 1, 0, 0, 0, AHA_BUS_OFF_TIME_SET, 4); 1074 #endif 1075 1076 /* Inquire Installed Devices (to force synchronous negotiation). */ 1077 devices.cmd.opcode = AHA_INQUIRE_DEVICES; 1078 aha_cmd(iot, ioh, sc, 1079 sizeof(devices.cmd), (u_char *)&devices.cmd, 1080 sizeof(devices.reply), (u_char *)&devices.reply); 1081 1082 /* Count installed units */ 1083 initial_ccbs = 0; 1084 for (i = 0; i < 8; i++) { 1085 for (j = 0; j < 8; j++) { 1086 if (((devices.reply.lun_map[i] >> j) & 1) == 1) 1087 initial_ccbs += 1; 1088 } 1089 } 1090 initial_ccbs *= sc->sc_link.openings; 1091 1092 /* Obtain setup information from. */ 1093 setup.cmd.opcode = AHA_INQUIRE_SETUP; 1094 setup.cmd.len = sizeof(setup.reply); 1095 aha_cmd(iot, ioh, sc, 1096 sizeof(setup.cmd), (u_char *)&setup.cmd, 1097 sizeof(setup.reply), (u_char *)&setup.reply); 1098 1099 printf("%s: %s, %s\n", 1100 sc->sc_dev.dv_xname, 1101 setup.reply.sync_neg ? "sync" : "async", 1102 setup.reply.parity ? "parity" : "no parity"); 1103 1104 for (i = 0; i < 8; i++) { 1105 if (!setup.reply.sync[i].valid || 1106 (!setup.reply.sync[i].offset && !setup.reply.sync[i].period)) 1107 continue; 1108 printf("%s targ %d: sync, offset %d, period %dnsec\n", 1109 sc->sc_dev.dv_xname, i, 1110 setup.reply.sync[i].offset, setup.reply.sync[i].period * 50 + 200); 1111 } 1112 1113 /* 1114 * Allocate the mailbox. 1115 */ 1116 if (bus_dmamem_alloc(sc->sc_dmat, NBPG, NBPG, 0, &seg, 1, 1117 &rseg, BUS_DMA_NOWAIT) || 1118 bus_dmamem_map(sc->sc_dmat, &seg, rseg, NBPG, 1119 (caddr_t *)&wmbx, BUS_DMA_NOWAIT|BUS_DMAMEM_NOSYNC)) 1120 panic("aha_init: can't create or map mailbox"); 1121 1122 /* 1123 * Since DMA memory allocation is always rounded up to a 1124 * page size, create some ccbs from the leftovers. 1125 */ 1126 if (aha_create_ccbs(sc, ((caddr_t)wmbx) + 1127 ALIGN(sizeof(struct aha_mbx)), 1128 NBPG - ALIGN(sizeof(struct aha_mbx)), initial_ccbs)) 1129 panic("aha_init: can't create ccbs"); 1130 1131 /* 1132 * Create and load the mailbox DMA map. 1133 */ 1134 if (bus_dmamap_create(sc->sc_dmat, sizeof(struct aha_mbx), 1, 1135 sizeof(struct aha_mbx), 0, BUS_DMA_NOWAIT, &sc->sc_dmamap_mbox) || 1136 bus_dmamap_load(sc->sc_dmat, sc->sc_dmamap_mbox, wmbx, 1137 sizeof(struct aha_mbx), NULL, BUS_DMA_NOWAIT)) 1138 panic("aha_init: can't create or load mailbox dma map"); 1139 1140 /* 1141 * Set up initial mail box for round-robin operation. 1142 */ 1143 for (i = 0; i < AHA_MBX_SIZE; i++) { 1144 wmbx->mbo[i].cmd = AHA_MBO_FREE; 1145 wmbx->mbi[i].stat = AHA_MBI_FREE; 1146 } 1147 wmbx->cmbo = wmbx->tmbo = &wmbx->mbo[0]; 1148 wmbx->tmbi = &wmbx->mbi[0]; 1149 sc->sc_mbofull = 0; 1150 1151 /* Initialize mail box. */ 1152 mailbox.cmd.opcode = AHA_MBX_INIT; 1153 mailbox.cmd.nmbx = AHA_MBX_SIZE; 1154 ltophys(sc->sc_dmamap_mbox->dm_segs[0].ds_addr, mailbox.cmd.addr); 1155 aha_cmd(iot, ioh, sc, 1156 sizeof(mailbox.cmd), (u_char *)&mailbox.cmd, 1157 0, (u_char *)0); 1158 } 1159 1160 void 1161 aha_inquire_setup_information(sc) 1162 struct aha_softc *sc; 1163 { 1164 bus_space_tag_t iot = sc->sc_iot; 1165 bus_space_handle_t ioh = sc->sc_ioh; 1166 struct aha_revision revision; 1167 u_char sts; 1168 int i; 1169 char *p; 1170 1171 strcpy(sc->sc_model, "unknown"); 1172 1173 /* 1174 * Assume we have a board at this stage, do an adapter inquire 1175 * to find out what type of controller it is. If the command 1176 * fails, we assume it's either a crusty board or an old 1542 1177 * clone, and skip the board-specific stuff. 1178 */ 1179 revision.cmd.opcode = AHA_INQUIRE_REVISION; 1180 if (aha_cmd(iot, ioh, sc, 1181 sizeof(revision.cmd), (u_char *)&revision.cmd, 1182 sizeof(revision.reply), (u_char *)&revision.reply)) { 1183 /* 1184 * aha_cmd() already started the reset. It's not clear we 1185 * even need to bother here. 1186 */ 1187 for (i = AHA_RESET_TIMEOUT; i; i--) { 1188 sts = bus_space_read_1(iot, ioh, AHA_STAT_PORT); 1189 if (sts == (AHA_STAT_IDLE | AHA_STAT_INIT)) 1190 break; 1191 delay(1000); 1192 } 1193 if (!i) { 1194 #ifdef AHADEBUG 1195 printf("aha_init: soft reset failed\n"); 1196 #endif /* AHADEBUG */ 1197 return; 1198 } 1199 #ifdef AHADEBUG 1200 printf("aha_init: inquire command failed\n"); 1201 #endif /* AHADEBUG */ 1202 goto noinquire; 1203 } 1204 1205 #ifdef AHADEBUG 1206 printf("%s: inquire %x, %x, %x, %x\n", 1207 sc->sc_dev.dv_xname, 1208 revision.reply.boardid, revision.reply.spec_opts, 1209 revision.reply.revision_1, revision.reply.revision_2); 1210 #endif /* AHADEBUG */ 1211 1212 switch (revision.reply.boardid) { 1213 case 0x31: 1214 strcpy(sc->sc_model, "1540"); 1215 break; 1216 case 0x41: 1217 strcpy(sc->sc_model, "1540A/1542A/1542B"); 1218 break; 1219 case 0x42: 1220 strcpy(sc->sc_model, "1640"); 1221 break; 1222 case 0x43: 1223 strcpy(sc->sc_model, "1542C"); 1224 break; 1225 case 0x44: 1226 case 0x45: 1227 strcpy(sc->sc_model, "1542CF"); 1228 break; 1229 case 0x46: 1230 strcpy(sc->sc_model, "1542CP"); 1231 break; 1232 } 1233 1234 p = sc->sc_firmware; 1235 *p++ = revision.reply.revision_1; 1236 *p++ = '.'; 1237 *p++ = revision.reply.revision_2; 1238 *p = '\0'; 1239 1240 noinquire: 1241 printf("%s: model AHA-%s, firmware %s\n", 1242 sc->sc_dev.dv_xname, 1243 sc->sc_model, sc->sc_firmware); 1244 } 1245 1246 void 1247 ahaminphys(bp) 1248 struct buf *bp; 1249 { 1250 1251 if (bp->b_bcount > AHA_MAXXFER) 1252 bp->b_bcount = AHA_MAXXFER; 1253 minphys(bp); 1254 } 1255 1256 /* 1257 * start a scsi operation given the command and the data address. Also needs 1258 * the unit, target and lu. 1259 */ 1260 int 1261 aha_scsi_cmd(xs) 1262 struct scsipi_xfer *xs; 1263 { 1264 struct scsipi_link *sc_link = xs->sc_link; 1265 struct aha_softc *sc = sc_link->adapter_softc; 1266 bus_dma_tag_t dmat = sc->sc_dmat; 1267 struct aha_ccb *ccb; 1268 int error, seg, flags, s; 1269 int fromqueue = 0, dontqueue = 0; 1270 1271 SC_DEBUG(sc_link, SDEV_DB2, ("aha_scsi_cmd\n")); 1272 1273 s = splbio(); /* protect the queue */ 1274 1275 /* 1276 * If we're running the queue from aha_done(), we've been 1277 * called with the first queue entry as our argument. 1278 */ 1279 if (xs == sc->sc_queue.lh_first) { 1280 xs = aha_dequeue(sc); 1281 fromqueue = 1; 1282 goto get_ccb; 1283 } 1284 1285 /* Polled requests can't be queued for later. */ 1286 dontqueue = xs->flags & SCSI_POLL; 1287 1288 /* 1289 * If there are jobs in the queue, run them first. 1290 */ 1291 if (sc->sc_queue.lh_first != NULL) { 1292 /* 1293 * If we can't queue, we have to abort, since 1294 * we have to preserve order. 1295 */ 1296 if (dontqueue) { 1297 splx(s); 1298 xs->error = XS_DRIVER_STUFFUP; 1299 return (TRY_AGAIN_LATER); 1300 } 1301 1302 /* 1303 * Swap with the first queue entry. 1304 */ 1305 aha_enqueue(sc, xs, 0); 1306 xs = aha_dequeue(sc); 1307 fromqueue = 1; 1308 } 1309 1310 get_ccb: 1311 /* 1312 * get a ccb to use. If the transfer 1313 * is from a buf (possibly from interrupt time) 1314 * then we can't allow it to sleep 1315 */ 1316 flags = xs->flags; 1317 if ((ccb = aha_get_ccb(sc, flags)) == NULL) { 1318 /* 1319 * If we can't queue, we lose. 1320 */ 1321 if (dontqueue) { 1322 splx(s); 1323 xs->error = XS_DRIVER_STUFFUP; 1324 return (TRY_AGAIN_LATER); 1325 } 1326 1327 /* 1328 * Stuff ourselves into the queue, in front 1329 * if we came off in the first place. 1330 */ 1331 aha_enqueue(sc, xs, fromqueue); 1332 splx(s); 1333 return (SUCCESSFULLY_QUEUED); 1334 } 1335 1336 splx(s); /* done playing with the queue */ 1337 1338 ccb->xs = xs; 1339 ccb->timeout = xs->timeout; 1340 1341 /* 1342 * Put all the arguments for the xfer in the ccb 1343 */ 1344 if (flags & SCSI_RESET) { 1345 ccb->opcode = AHA_RESET_CCB; 1346 ccb->scsi_cmd_length = 0; 1347 } else { 1348 /* can't use S/G if zero length */ 1349 ccb->opcode = (xs->datalen ? AHA_INIT_SCAT_GATH_CCB 1350 : AHA_INITIATOR_CCB); 1351 bcopy(xs->cmd, &ccb->scsi_cmd, 1352 ccb->scsi_cmd_length = xs->cmdlen); 1353 } 1354 1355 if (xs->datalen) { 1356 /* 1357 * Map the DMA transfer. 1358 */ 1359 #ifdef TFS 1360 if (flags & SCSI_DATA_UIO) { 1361 error = bus_dmamap_load_uio(dmat, 1362 ccb->dmamap_xfer, (struct uio *)xs->data, 1363 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : 1364 BUS_DMA_WAITOK); 1365 } else 1366 #endif 1367 { 1368 error = bus_dmamap_load(dmat, 1369 ccb->dmamap_xfer, xs->data, xs->datalen, NULL, 1370 (flags & SCSI_NOSLEEP) ? BUS_DMA_NOWAIT : 1371 BUS_DMA_WAITOK); 1372 } 1373 1374 if (error) { 1375 if (error == EFBIG) { 1376 printf("%s: aha_scsi_cmd, more than %d" 1377 " dma segments\n", 1378 sc->sc_dev.dv_xname, AHA_NSEG); 1379 } else { 1380 printf("%s: aha_scsi_cmd, error %d loading" 1381 " dma map\n", 1382 sc->sc_dev.dv_xname, error); 1383 } 1384 goto bad; 1385 } 1386 1387 bus_dmamap_sync(dmat, ccb->dmamap_xfer, 1388 (flags & SCSI_DATA_IN) ? BUS_DMASYNC_PREREAD : 1389 BUS_DMASYNC_PREWRITE); 1390 1391 /* 1392 * Load the hardware scatter/gather map with the 1393 * contents of the DMA map. 1394 */ 1395 for (seg = 0; seg < ccb->dmamap_xfer->dm_nsegs; seg++) { 1396 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_addr, 1397 ccb->scat_gath[seg].seg_addr); 1398 ltophys(ccb->dmamap_xfer->dm_segs[seg].ds_len, 1399 ccb->scat_gath[seg].seg_len); 1400 } 1401 1402 ltophys(ccb->dmamap_self->dm_segs[0].ds_addr + 1403 offsetof(struct aha_ccb, scat_gath), ccb->data_addr); 1404 ltophys(ccb->dmamap_xfer->dm_nsegs * 1405 sizeof(struct aha_scat_gath), ccb->data_length); 1406 } else { 1407 /* 1408 * No data xfer, use non S/G values. 1409 */ 1410 ltophys(0, ccb->data_addr); 1411 ltophys(0, ccb->data_length); 1412 } 1413 1414 ccb->data_out = 0; 1415 ccb->data_in = 0; 1416 ccb->target = sc_link->scsipi_scsi.target; 1417 ccb->lun = sc_link->scsipi_scsi.lun; 1418 ccb->req_sense_length = sizeof(ccb->scsi_sense); 1419 ccb->host_stat = 0x00; 1420 ccb->target_stat = 0x00; 1421 ccb->link_id = 0; 1422 ltophys(0, ccb->link_addr); 1423 1424 s = splbio(); 1425 aha_queue_ccb(sc, ccb); 1426 splx(s); 1427 1428 /* 1429 * Usually return SUCCESSFULLY QUEUED 1430 */ 1431 SC_DEBUG(sc_link, SDEV_DB3, ("cmd_sent\n")); 1432 if ((flags & SCSI_POLL) == 0) 1433 return (SUCCESSFULLY_QUEUED); 1434 1435 /* 1436 * If we can't use interrupts, poll on completion 1437 */ 1438 if (aha_poll(sc, xs, ccb->timeout)) { 1439 aha_timeout(ccb); 1440 if (aha_poll(sc, xs, ccb->timeout)) 1441 aha_timeout(ccb); 1442 } 1443 return (COMPLETE); 1444 1445 bad: 1446 xs->error = XS_DRIVER_STUFFUP; 1447 aha_free_ccb(sc, ccb); 1448 return (COMPLETE); 1449 } 1450 1451 /* 1452 * Poll a particular unit, looking for a particular xs 1453 */ 1454 int 1455 aha_poll(sc, xs, count) 1456 struct aha_softc *sc; 1457 struct scsipi_xfer *xs; 1458 int count; 1459 { 1460 bus_space_tag_t iot = sc->sc_iot; 1461 bus_space_handle_t ioh = sc->sc_ioh; 1462 1463 /* timeouts are in msec, so we loop in 1000 usec cycles */ 1464 while (count) { 1465 /* 1466 * If we had interrupts enabled, would we 1467 * have got an interrupt? 1468 */ 1469 if (bus_space_read_1(iot, ioh, AHA_INTR_PORT) & AHA_INTR_ANYINTR) 1470 aha_intr(sc); 1471 if (xs->flags & ITSDONE) 1472 return (0); 1473 delay(1000); /* only happens in boot so ok */ 1474 count--; 1475 } 1476 return (1); 1477 } 1478 1479 void 1480 aha_timeout(arg) 1481 void *arg; 1482 { 1483 struct aha_ccb *ccb = arg; 1484 struct scsipi_xfer *xs = ccb->xs; 1485 struct scsipi_link *sc_link = xs->sc_link; 1486 struct aha_softc *sc = sc_link->adapter_softc; 1487 int s; 1488 1489 scsi_print_addr(sc_link); 1490 printf("timed out"); 1491 1492 s = splbio(); 1493 1494 #ifdef AHADIAG 1495 /* 1496 * If The ccb's mbx is not free, then the board has gone south? 1497 */ 1498 aha_collect_mbo(sc); 1499 if (ccb->flags & CCB_SENDING) { 1500 printf("%s: not taking commands!\n", sc->sc_dev.dv_xname); 1501 Debugger(); 1502 } 1503 #endif 1504 1505 /* 1506 * If it has been through before, then 1507 * a previous abort has failed, don't 1508 * try abort again 1509 */ 1510 if (ccb->flags & CCB_ABORT) { 1511 /* abort timed out */ 1512 printf(" AGAIN\n"); 1513 /* XXX Must reset! */ 1514 } else { 1515 /* abort the operation that has timed out */ 1516 printf("\n"); 1517 ccb->xs->error = XS_TIMEOUT; 1518 ccb->timeout = AHA_ABORT_TIMEOUT; 1519 ccb->flags |= CCB_ABORT; 1520 aha_queue_ccb(sc, ccb); 1521 } 1522 1523 splx(s); 1524 } 1525
Indexes created Mon Sep 22 10:09:38 GMT 2025