siop.c revision 1.74
1/* $NetBSD: siop.c,v 1.74 2004/05/17 18:37:02 bouyer Exp $ */ 2 3/* 4 * Copyright (c) 2000 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Manuel Bouyer. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33/* SYM53c7/8xx PCI-SCSI I/O Processors driver */ 34 35#include <sys/cdefs.h> 36__KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.74 2004/05/17 18:37:02 bouyer Exp $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/device.h> 41#include <sys/malloc.h> 42#include <sys/buf.h> 43#include <sys/kernel.h> 44 45#include <uvm/uvm_extern.h> 46 47#include <machine/endian.h> 48#include <machine/bus.h> 49 50#include <dev/microcode/siop/siop.out> 51 52#include <dev/scsipi/scsi_all.h> 53#include <dev/scsipi/scsi_message.h> 54#include <dev/scsipi/scsipi_all.h> 55 56#include <dev/scsipi/scsiconf.h> 57 58#include <dev/ic/siopreg.h> 59#include <dev/ic/siopvar_common.h> 60#include <dev/ic/siopvar.h> 61 62#include "opt_siop.h" 63 64#ifndef DEBUG 65#undef DEBUG 66#endif 67#undef SIOP_DEBUG 68#undef SIOP_DEBUG_DR 69#undef SIOP_DEBUG_INTR 70#undef SIOP_DEBUG_SCHED 71#undef DUMP_SCRIPT 72 73#define SIOP_STATS 74 75#ifndef SIOP_DEFAULT_TARGET 76#define SIOP_DEFAULT_TARGET 7 77#endif 78 79/* number of cmd descriptors per block */ 80#define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct siop_xfer)) 81 82/* Number of scheduler slot (needs to match script) */ 83#define SIOP_NSLOTS 40 84 85void siop_reset __P((struct siop_softc *)); 86void siop_handle_reset __P((struct siop_softc *)); 87int siop_handle_qtag_reject __P((struct siop_cmd *)); 88void siop_scsicmd_end __P((struct siop_cmd *)); 89void siop_unqueue __P((struct siop_softc *, int, int)); 90static void siop_start __P((struct siop_softc *, struct siop_cmd *)); 91void siop_timeout __P((void *)); 92int siop_scsicmd __P((struct scsipi_xfer *)); 93void siop_scsipi_request __P((struct scsipi_channel *, 94 scsipi_adapter_req_t, void *)); 95void siop_dump_script __P((struct siop_softc *)); 96void siop_morecbd __P((struct siop_softc *)); 97struct siop_lunsw *siop_get_lunsw __P((struct siop_softc *)); 98void siop_add_reselsw __P((struct siop_softc *, int)); 99void siop_update_scntl3 __P((struct siop_softc *, 100 struct siop_common_target *)); 101 102#ifdef SIOP_STATS 103static int siop_stat_intr = 0; 104static int siop_stat_intr_shortxfer = 0; 105static int siop_stat_intr_sdp = 0; 106static int siop_stat_intr_done = 0; 107static int siop_stat_intr_xferdisc = 0; 108static int siop_stat_intr_lunresel = 0; 109static int siop_stat_intr_qfull = 0; 110void siop_printstats __P((void)); 111#define INCSTAT(x) x++ 112#else 113#define INCSTAT(x) 114#endif 115 116static __inline__ void siop_script_sync __P((struct siop_softc *, int)); 117static __inline__ void 118siop_script_sync(sc, ops) 119 struct siop_softc *sc; 120 int ops; 121{ 122 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) 123 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 124 PAGE_SIZE, ops); 125} 126 127static __inline__ u_int32_t siop_script_read __P((struct siop_softc *, u_int)); 128static __inline__ u_int32_t 129siop_script_read(sc, offset) 130 struct siop_softc *sc; 131 u_int offset; 132{ 133 if (sc->sc_c.features & SF_CHIP_RAM) { 134 return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 135 offset * 4); 136 } else { 137 return le32toh(sc->sc_c.sc_script[offset]); 138 } 139} 140 141static __inline__ void siop_script_write __P((struct siop_softc *, u_int, 142 u_int32_t)); 143static __inline__ void 144siop_script_write(sc, offset, val) 145 struct siop_softc *sc; 146 u_int offset; 147 u_int32_t val; 148{ 149 if (sc->sc_c.features & SF_CHIP_RAM) { 150 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 151 offset * 4, val); 152 } else { 153 sc->sc_c.sc_script[offset] = htole32(val); 154 } 155} 156 157void 158siop_attach(sc) 159 struct siop_softc *sc; 160{ 161 if (siop_common_attach(&sc->sc_c) != 0) 162 return; 163 164 TAILQ_INIT(&sc->free_list); 165 TAILQ_INIT(&sc->cmds); 166 TAILQ_INIT(&sc->lunsw_list); 167 sc->sc_currschedslot = 0; 168#ifdef SIOP_DEBUG 169 printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n", 170 sc->sc_c.sc_dev.dv_xname, (int)sizeof(siop_script), 171 (u_int32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); 172#endif 173 174 sc->sc_c.sc_adapt.adapt_max_periph = SIOP_NTAG - 1; 175 sc->sc_c.sc_adapt.adapt_request = siop_scsipi_request; 176 177 /* Do a bus reset, so that devices fall back to narrow/async */ 178 siop_resetbus(&sc->sc_c); 179 /* 180 * siop_reset() will reset the chip, thus clearing pending interrupts 181 */ 182 siop_reset(sc); 183#ifdef DUMP_SCRIPT 184 siop_dump_script(sc); 185#endif 186 187 config_found((struct device*)sc, &sc->sc_c.sc_chan, scsiprint); 188} 189 190void 191siop_reset(sc) 192 struct siop_softc *sc; 193{ 194 int i, j; 195 struct siop_lunsw *lunsw; 196 197 siop_common_reset(&sc->sc_c); 198 199 /* copy and patch the script */ 200 if (sc->sc_c.features & SF_CHIP_RAM) { 201 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, 202 siop_script, sizeof(siop_script) / sizeof(siop_script[0])); 203 for (j = 0; j < 204 (sizeof(E_abs_msgin_Used) / sizeof(E_abs_msgin_Used[0])); 205 j++) { 206 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 207 E_abs_msgin_Used[j] * 4, 208 sc->sc_c.sc_scriptaddr + Ent_msgin_space); 209 } 210 if (sc->sc_c.features & SF_CHIP_LED0) { 211 bus_space_write_region_4(sc->sc_c.sc_ramt, 212 sc->sc_c.sc_ramh, 213 Ent_led_on1, siop_led_on, 214 sizeof(siop_led_on) / sizeof(siop_led_on[0])); 215 bus_space_write_region_4(sc->sc_c.sc_ramt, 216 sc->sc_c.sc_ramh, 217 Ent_led_on2, siop_led_on, 218 sizeof(siop_led_on) / sizeof(siop_led_on[0])); 219 bus_space_write_region_4(sc->sc_c.sc_ramt, 220 sc->sc_c.sc_ramh, 221 Ent_led_off, siop_led_off, 222 sizeof(siop_led_off) / sizeof(siop_led_off[0])); 223 } 224 } else { 225 for (j = 0; 226 j < (sizeof(siop_script) / sizeof(siop_script[0])); j++) { 227 sc->sc_c.sc_script[j] = htole32(siop_script[j]); 228 } 229 for (j = 0; j < 230 (sizeof(E_abs_msgin_Used) / sizeof(E_abs_msgin_Used[0])); 231 j++) { 232 sc->sc_c.sc_script[E_abs_msgin_Used[j]] = 233 htole32(sc->sc_c.sc_scriptaddr + Ent_msgin_space); 234 } 235 if (sc->sc_c.features & SF_CHIP_LED0) { 236 for (j = 0; j < (sizeof(siop_led_on) / 237 sizeof(siop_led_on[0])); j++) 238 sc->sc_c.sc_script[ 239 Ent_led_on1 / sizeof(siop_led_on[0]) + j 240 ] = htole32(siop_led_on[j]); 241 for (j = 0; j < (sizeof(siop_led_on) / 242 sizeof(siop_led_on[0])); j++) 243 sc->sc_c.sc_script[ 244 Ent_led_on2 / sizeof(siop_led_on[0]) + j 245 ] = htole32(siop_led_on[j]); 246 for (j = 0; j < (sizeof(siop_led_off) / 247 sizeof(siop_led_off[0])); j++) 248 sc->sc_c.sc_script[ 249 Ent_led_off / sizeof(siop_led_off[0]) + j 250 ] = htole32(siop_led_off[j]); 251 } 252 } 253 sc->script_free_lo = sizeof(siop_script) / sizeof(siop_script[0]); 254 sc->script_free_hi = sc->sc_c.ram_size / 4; 255 sc->sc_ntargets = 0; 256 257 /* free used and unused lun switches */ 258 while((lunsw = TAILQ_FIRST(&sc->lunsw_list)) != NULL) { 259#ifdef SIOP_DEBUG 260 printf("%s: free lunsw at offset %d\n", 261 sc->sc_c.sc_dev.dv_xname, lunsw->lunsw_off); 262#endif 263 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 264 free(lunsw, M_DEVBUF); 265 } 266 TAILQ_INIT(&sc->lunsw_list); 267 /* restore reselect switch */ 268 for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { 269 struct siop_target *target; 270 if (sc->sc_c.targets[i] == NULL) 271 continue; 272#ifdef SIOP_DEBUG 273 printf("%s: restore sw for target %d\n", 274 sc->sc_c.sc_dev.dv_xname, i); 275#endif 276 target = (struct siop_target *)sc->sc_c.targets[i]; 277 free(target->lunsw, M_DEVBUF); 278 target->lunsw = siop_get_lunsw(sc); 279 if (target->lunsw == NULL) { 280 printf("%s: can't alloc lunsw for target %d\n", 281 sc->sc_c.sc_dev.dv_xname, i); 282 break; 283 } 284 siop_add_reselsw(sc, i); 285 } 286 287 /* start script */ 288 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { 289 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 290 PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 291 } 292 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, 293 sc->sc_c.sc_scriptaddr + Ent_reselect); 294} 295 296#if 0 297#define CALL_SCRIPT(ent) do {\ 298 printf ("start script DSA 0x%lx DSP 0x%lx\n", \ 299 siop_cmd->cmd_c.dsa, \ 300 sc->sc_c.sc_scriptaddr + ent); \ 301bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 302} while (0) 303#else 304#define CALL_SCRIPT(ent) do {\ 305bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 306} while (0) 307#endif 308 309int 310siop_intr(v) 311 void *v; 312{ 313 struct siop_softc *sc = v; 314 struct siop_target *siop_target; 315 struct siop_cmd *siop_cmd; 316 struct siop_lun *siop_lun; 317 struct scsipi_xfer *xs; 318 int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ 319 u_int32_t irqcode; 320 int need_reset = 0; 321 int offset, target, lun, tag; 322 bus_addr_t dsa; 323 struct siop_cbd *cbdp; 324 int freetarget = 0; 325 int restart = 0; 326 327 istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); 328 if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) 329 return 0; 330 INCSTAT(siop_stat_intr); 331 if (istat & ISTAT_INTF) { 332 printf("INTRF\n"); 333 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 334 SIOP_ISTAT, ISTAT_INTF); 335 } 336 if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == 337 (ISTAT_DIP | ISTAT_ABRT)) { 338 /* clear abort */ 339 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 340 SIOP_ISTAT, 0); 341 } 342 /* use DSA to find the current siop_cmd */ 343 siop_cmd = NULL; 344 dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); 345 TAILQ_FOREACH(cbdp, &sc->cmds, next) { 346 if (dsa >= cbdp->xferdma->dm_segs[0].ds_addr && 347 dsa < cbdp->xferdma->dm_segs[0].ds_addr + PAGE_SIZE) { 348 dsa -= cbdp->xferdma->dm_segs[0].ds_addr; 349 siop_cmd = &cbdp->cmds[dsa / sizeof(struct siop_xfer)]; 350 siop_table_sync(siop_cmd, 351 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 352 break; 353 } 354 } 355 if (siop_cmd) { 356 xs = siop_cmd->cmd_c.xs; 357 siop_target = (struct siop_target *)siop_cmd->cmd_c.siop_target; 358 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 359 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 360 tag = siop_cmd->cmd_c.tag; 361 siop_lun = siop_target->siop_lun[lun]; 362#ifdef DIAGNOSTIC 363 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 364 printf("siop_cmd (lun %d) for DSA 0x%x " 365 "not active (%d)\n", lun, (u_int)dsa, 366 siop_cmd->cmd_c.status); 367 xs = NULL; 368 siop_target = NULL; 369 target = -1; 370 lun = -1; 371 tag = -1; 372 siop_lun = NULL; 373 siop_cmd = NULL; 374 } else if (siop_lun->siop_tag[tag].active != siop_cmd) { 375 printf("siop_cmd (lun %d tag %d) not in siop_lun " 376 "active (%p != %p)\n", lun, tag, siop_cmd, 377 siop_lun->siop_tag[tag].active); 378 } 379#endif 380 } else { 381 xs = NULL; 382 siop_target = NULL; 383 target = -1; 384 lun = -1; 385 tag = -1; 386 siop_lun = NULL; 387 } 388 if (istat & ISTAT_DIP) { 389 dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 390 SIOP_DSTAT); 391 if (dstat & DSTAT_ABRT) { 392 /* was probably generated by a bus reset IOCTL */ 393 if ((dstat & DSTAT_DFE) == 0) 394 siop_clearfifo(&sc->sc_c); 395 goto reset; 396 } 397 if (dstat & DSTAT_SSI) { 398 printf("single step dsp 0x%08x dsa 0x08%x\n", 399 (int)(bus_space_read_4(sc->sc_c.sc_rt, 400 sc->sc_c.sc_rh, SIOP_DSP) - 401 sc->sc_c.sc_scriptaddr), 402 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 403 SIOP_DSA)); 404 if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && 405 (istat & ISTAT_SIP) == 0) { 406 bus_space_write_1(sc->sc_c.sc_rt, 407 sc->sc_c.sc_rh, SIOP_DCNTL, 408 bus_space_read_1(sc->sc_c.sc_rt, 409 sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); 410 } 411 return 1; 412 } 413 414 if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { 415 printf("DMA IRQ:"); 416 if (dstat & DSTAT_IID) 417 printf(" Illegal instruction"); 418 if (dstat & DSTAT_BF) 419 printf(" bus fault"); 420 if (dstat & DSTAT_MDPE) 421 printf(" parity"); 422 if (dstat & DSTAT_DFE) 423 printf(" DMA fifo empty"); 424 else 425 siop_clearfifo(&sc->sc_c); 426 printf(", DSP=0x%x DSA=0x%x: ", 427 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 428 SIOP_DSP) - sc->sc_c.sc_scriptaddr), 429 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 430 if (siop_cmd) 431 printf("last msg_in=0x%x status=0x%x\n", 432 siop_cmd->cmd_tables->msg_in[0], 433 le32toh(siop_cmd->cmd_tables->status)); 434 else 435 printf("%s: current DSA invalid\n", 436 sc->sc_c.sc_dev.dv_xname); 437 need_reset = 1; 438 } 439 } 440 if (istat & ISTAT_SIP) { 441 if (istat & ISTAT_DIP) 442 delay(10); 443 /* 444 * Can't read sist0 & sist1 independently, or we have to 445 * insert delay 446 */ 447 sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 448 SIOP_SIST0); 449 sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 450 SIOP_SSTAT1); 451#ifdef SIOP_DEBUG_INTR 452 printf("scsi interrupt, sist=0x%x sstat1=0x%x " 453 "DSA=0x%x DSP=0x%lx\n", sist, 454 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 455 SIOP_SSTAT1), 456 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 457 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 458 SIOP_DSP) - 459 sc->sc_c.sc_scriptaddr)); 460#endif 461 if (sist & SIST0_RST) { 462 siop_handle_reset(sc); 463 /* no table to flush here */ 464 return 1; 465 } 466 if (sist & SIST0_SGE) { 467 if (siop_cmd) 468 scsipi_printaddr(xs->xs_periph); 469 else 470 printf("%s:", sc->sc_c.sc_dev.dv_xname); 471 printf("scsi gross error\n"); 472 goto reset; 473 } 474 if ((sist & SIST0_MA) && need_reset == 0) { 475 if (siop_cmd) { 476 int scratcha0; 477 dstat = bus_space_read_1(sc->sc_c.sc_rt, 478 sc->sc_c.sc_rh, SIOP_DSTAT); 479 /* 480 * first restore DSA, in case we were in a S/G 481 * operation. 482 */ 483 bus_space_write_4(sc->sc_c.sc_rt, 484 sc->sc_c.sc_rh, 485 SIOP_DSA, siop_cmd->cmd_c.dsa); 486 scratcha0 = bus_space_read_1(sc->sc_c.sc_rt, 487 sc->sc_c.sc_rh, SIOP_SCRATCHA); 488 switch (sstat1 & SSTAT1_PHASE_MASK) { 489 case SSTAT1_PHASE_STATUS: 490 /* 491 * previous phase may be aborted for any reason 492 * ( for example, the target has less data to 493 * transfer than requested). Compute resid and 494 * just go to status, the command should 495 * terminate. 496 */ 497 INCSTAT(siop_stat_intr_shortxfer); 498 if (scratcha0 & A_flag_data) 499 siop_ma(&siop_cmd->cmd_c); 500 else if ((dstat & DSTAT_DFE) == 0) 501 siop_clearfifo(&sc->sc_c); 502 CALL_SCRIPT(Ent_status); 503 return 1; 504 case SSTAT1_PHASE_MSGIN: 505 /* 506 * target may be ready to disconnect 507 * Compute resid which would be used later 508 * if a save data pointer is needed. 509 */ 510 INCSTAT(siop_stat_intr_xferdisc); 511 if (scratcha0 & A_flag_data) 512 siop_ma(&siop_cmd->cmd_c); 513 else if ((dstat & DSTAT_DFE) == 0) 514 siop_clearfifo(&sc->sc_c); 515 bus_space_write_1(sc->sc_c.sc_rt, 516 sc->sc_c.sc_rh, SIOP_SCRATCHA, 517 scratcha0 & ~A_flag_data); 518 CALL_SCRIPT(Ent_msgin); 519 return 1; 520 } 521 printf("%s: unexpected phase mismatch %d\n", 522 sc->sc_c.sc_dev.dv_xname, 523 sstat1 & SSTAT1_PHASE_MASK); 524 } else { 525 printf("%s: phase mismatch without command\n", 526 sc->sc_c.sc_dev.dv_xname); 527 } 528 need_reset = 1; 529 } 530 if (sist & SIST0_PAR) { 531 /* parity error, reset */ 532 if (siop_cmd) 533 scsipi_printaddr(xs->xs_periph); 534 else 535 printf("%s:", sc->sc_c.sc_dev.dv_xname); 536 printf("parity error\n"); 537 goto reset; 538 } 539 if ((sist & (SIST1_STO << 8)) && need_reset == 0) { 540 /* selection time out, assume there's no device here */ 541 if (siop_cmd) { 542 siop_cmd->cmd_c.status = CMDST_DONE; 543 xs->error = XS_SELTIMEOUT; 544 freetarget = 1; 545 goto end; 546 } else { 547 printf("%s: selection timeout without " 548 "command\n", sc->sc_c.sc_dev.dv_xname); 549 need_reset = 1; 550 } 551 } 552 if (sist & SIST0_UDC) { 553 /* 554 * unexpected disconnect. Usually the target signals 555 * a fatal condition this way. Attempt to get sense. 556 */ 557 if (siop_cmd) { 558 siop_cmd->cmd_tables->status = 559 htole32(SCSI_CHECK); 560 goto end; 561 } 562 printf("%s: unexpected disconnect without " 563 "command\n", sc->sc_c.sc_dev.dv_xname); 564 goto reset; 565 } 566 if (sist & (SIST1_SBMC << 8)) { 567 /* SCSI bus mode change */ 568 if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) 569 goto reset; 570 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { 571 /* 572 * we have a script interrupt, it will 573 * restart the script. 574 */ 575 goto scintr; 576 } 577 /* 578 * else we have to restart it ourselve, at the 579 * interrupted instruction. 580 */ 581 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 582 SIOP_DSP, 583 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 584 SIOP_DSP) - 8); 585 return 1; 586 } 587 /* Else it's an unhandled exception (for now). */ 588 printf("%s: unhandled scsi interrupt, sist=0x%x sstat1=0x%x " 589 "DSA=0x%x DSP=0x%x\n", sc->sc_c.sc_dev.dv_xname, sist, 590 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 591 SIOP_SSTAT1), 592 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 593 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 594 SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 595 if (siop_cmd) { 596 siop_cmd->cmd_c.status = CMDST_DONE; 597 xs->error = XS_SELTIMEOUT; 598 goto end; 599 } 600 need_reset = 1; 601 } 602 if (need_reset) { 603reset: 604 /* fatal error, reset the bus */ 605 siop_resetbus(&sc->sc_c); 606 /* no table to flush here */ 607 return 1; 608 } 609 610scintr: 611 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ 612 irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 613 SIOP_DSPS); 614#ifdef SIOP_DEBUG_INTR 615 printf("script interrupt 0x%x\n", irqcode); 616#endif 617 /* 618 * no command, or an inactive command is only valid for a 619 * reselect interrupt 620 */ 621 if ((irqcode & 0x80) == 0) { 622 if (siop_cmd == NULL) { 623 printf( 624 "%s: script interrupt (0x%x) with invalid DSA !!!\n", 625 sc->sc_c.sc_dev.dv_xname, irqcode); 626 goto reset; 627 } 628 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 629 printf("%s: command with invalid status " 630 "(IRQ code 0x%x current status %d) !\n", 631 sc->sc_c.sc_dev.dv_xname, 632 irqcode, siop_cmd->cmd_c.status); 633 xs = NULL; 634 } 635 } 636 switch(irqcode) { 637 case A_int_err: 638 printf("error, DSP=0x%x\n", 639 (int)(bus_space_read_4(sc->sc_c.sc_rt, 640 sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 641 if (xs) { 642 xs->error = XS_SELTIMEOUT; 643 goto end; 644 } else { 645 goto reset; 646 } 647 case A_int_reseltarg: 648 printf("%s: reselect with invalid target\n", 649 sc->sc_c.sc_dev.dv_xname); 650 goto reset; 651 case A_int_resellun: 652 INCSTAT(siop_stat_intr_lunresel); 653 target = bus_space_read_1(sc->sc_c.sc_rt, 654 sc->sc_c.sc_rh, SIOP_SCRATCHA) & 0xf; 655 lun = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 656 SIOP_SCRATCHA + 1); 657 tag = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 658 SIOP_SCRATCHA + 2); 659 siop_target = 660 (struct siop_target *)sc->sc_c.targets[target]; 661 if (siop_target == NULL) { 662 printf("%s: reselect with invalid target %d\n", 663 sc->sc_c.sc_dev.dv_xname, target); 664 goto reset; 665 } 666 siop_lun = siop_target->siop_lun[lun]; 667 if (siop_lun == NULL) { 668 printf("%s: target %d reselect with invalid " 669 "lun %d\n", sc->sc_c.sc_dev.dv_xname, 670 target, lun); 671 goto reset; 672 } 673 if (siop_lun->siop_tag[tag].active == NULL) { 674 printf("%s: target %d lun %d tag %d reselect " 675 "without command\n", 676 sc->sc_c.sc_dev.dv_xname, 677 target, lun, tag); 678 goto reset; 679 } 680 siop_cmd = siop_lun->siop_tag[tag].active; 681 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 682 SIOP_DSP, siop_cmd->cmd_c.dsa + 683 sizeof(struct siop_common_xfer) + 684 Ent_ldsa_reload_dsa); 685 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 686 return 1; 687 case A_int_reseltag: 688 printf("%s: reselect with invalid tag\n", 689 sc->sc_c.sc_dev.dv_xname); 690 goto reset; 691 case A_int_msgin: 692 { 693 int msgin = bus_space_read_1(sc->sc_c.sc_rt, 694 sc->sc_c.sc_rh, SIOP_SFBR); 695 if (msgin == MSG_MESSAGE_REJECT) { 696 int msg, extmsg; 697 if (siop_cmd->cmd_tables->msg_out[0] & 0x80) { 698 /* 699 * message was part of a identify + 700 * something else. Identify shouldn't 701 * have been rejected. 702 */ 703 msg = 704 siop_cmd->cmd_tables->msg_out[1]; 705 extmsg = 706 siop_cmd->cmd_tables->msg_out[3]; 707 } else { 708 msg = siop_cmd->cmd_tables->msg_out[0]; 709 extmsg = 710 siop_cmd->cmd_tables->msg_out[2]; 711 } 712 if (msg == MSG_MESSAGE_REJECT) { 713 /* MSG_REJECT for a MSG_REJECT !*/ 714 if (xs) 715 scsipi_printaddr(xs->xs_periph); 716 else 717 printf("%s: ", 718 sc->sc_c.sc_dev.dv_xname); 719 printf("our reject message was " 720 "rejected\n"); 721 goto reset; 722 } 723 if (msg == MSG_EXTENDED && 724 extmsg == MSG_EXT_WDTR) { 725 /* WDTR rejected, initiate sync */ 726 if ((siop_target->target_c.flags & 727 TARF_SYNC) == 0) { 728 siop_target->target_c.status = 729 TARST_OK; 730 siop_update_xfer_mode(&sc->sc_c, 731 target); 732 /* no table to flush here */ 733 CALL_SCRIPT(Ent_msgin_ack); 734 return 1; 735 } 736 siop_target->target_c.status = 737 TARST_SYNC_NEG; 738 siop_sdtr_msg(&siop_cmd->cmd_c, 0, 739 sc->sc_c.st_minsync, 740 sc->sc_c.maxoff); 741 siop_table_sync(siop_cmd, 742 BUS_DMASYNC_PREREAD | 743 BUS_DMASYNC_PREWRITE); 744 CALL_SCRIPT(Ent_send_msgout); 745 return 1; 746 } else if (msg == MSG_EXTENDED && 747 extmsg == MSG_EXT_SDTR) { 748 /* sync rejected */ 749 siop_target->target_c.offset = 0; 750 siop_target->target_c.period = 0; 751 siop_target->target_c.status = TARST_OK; 752 siop_update_xfer_mode(&sc->sc_c, 753 target); 754 /* no table to flush here */ 755 CALL_SCRIPT(Ent_msgin_ack); 756 return 1; 757 } else if (msg == MSG_SIMPLE_Q_TAG || 758 msg == MSG_HEAD_OF_Q_TAG || 759 msg == MSG_ORDERED_Q_TAG) { 760 if (siop_handle_qtag_reject( 761 siop_cmd) == -1) 762 goto reset; 763 CALL_SCRIPT(Ent_msgin_ack); 764 return 1; 765 } 766 if (xs) 767 scsipi_printaddr(xs->xs_periph); 768 else 769 printf("%s: ", 770 sc->sc_c.sc_dev.dv_xname); 771 if (msg == MSG_EXTENDED) { 772 printf("scsi message reject, extended " 773 "message sent was 0x%x\n", extmsg); 774 } else { 775 printf("scsi message reject, message " 776 "sent was 0x%x\n", msg); 777 } 778 /* no table to flush here */ 779 CALL_SCRIPT(Ent_msgin_ack); 780 return 1; 781 } 782 if (xs) 783 scsipi_printaddr(xs->xs_periph); 784 else 785 printf("%s: ", sc->sc_c.sc_dev.dv_xname); 786 printf("unhandled message 0x%x\n", 787 siop_cmd->cmd_tables->msg_in[0]); 788 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 789 siop_cmd->cmd_tables->t_msgout.count= htole32(1); 790 siop_table_sync(siop_cmd, 791 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 792 CALL_SCRIPT(Ent_send_msgout); 793 return 1; 794 } 795 case A_int_extmsgin: 796#ifdef SIOP_DEBUG_INTR 797 printf("extended message: msg 0x%x len %d\n", 798 siop_cmd->cmd_tables->msg_in[2], 799 siop_cmd->cmd_tables->msg_in[1]); 800#endif 801 if (siop_cmd->cmd_tables->msg_in[1] > 802 sizeof(siop_cmd->cmd_tables->msg_in) - 2) 803 printf("%s: extended message too big (%d)\n", 804 sc->sc_c.sc_dev.dv_xname, 805 siop_cmd->cmd_tables->msg_in[1]); 806 siop_cmd->cmd_tables->t_extmsgdata.count = 807 htole32(siop_cmd->cmd_tables->msg_in[1] - 1); 808 siop_table_sync(siop_cmd, 809 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 810 CALL_SCRIPT(Ent_get_extmsgdata); 811 return 1; 812 case A_int_extmsgdata: 813#ifdef SIOP_DEBUG_INTR 814 { 815 int i; 816 printf("extended message: 0x%x, data:", 817 siop_cmd->cmd_tables->msg_in[2]); 818 for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; 819 i++) 820 printf(" 0x%x", 821 siop_cmd->cmd_tables->msg_in[i]); 822 printf("\n"); 823 } 824#endif 825 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 826 switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { 827 case SIOP_NEG_MSGOUT: 828 siop_update_scntl3(sc, 829 siop_cmd->cmd_c.siop_target); 830 siop_table_sync(siop_cmd, 831 BUS_DMASYNC_PREREAD | 832 BUS_DMASYNC_PREWRITE); 833 CALL_SCRIPT(Ent_send_msgout); 834 return(1); 835 case SIOP_NEG_ACK: 836 siop_update_scntl3(sc, 837 siop_cmd->cmd_c.siop_target); 838 CALL_SCRIPT(Ent_msgin_ack); 839 return(1); 840 default: 841 panic("invalid retval from " 842 "siop_wdtr_neg()"); 843 } 844 return(1); 845 } 846 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 847 switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { 848 case SIOP_NEG_MSGOUT: 849 siop_update_scntl3(sc, 850 siop_cmd->cmd_c.siop_target); 851 siop_table_sync(siop_cmd, 852 BUS_DMASYNC_PREREAD | 853 BUS_DMASYNC_PREWRITE); 854 CALL_SCRIPT(Ent_send_msgout); 855 return(1); 856 case SIOP_NEG_ACK: 857 siop_update_scntl3(sc, 858 siop_cmd->cmd_c.siop_target); 859 CALL_SCRIPT(Ent_msgin_ack); 860 return(1); 861 default: 862 panic("invalid retval from " 863 "siop_wdtr_neg()"); 864 } 865 return(1); 866 } 867 /* send a message reject */ 868 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 869 siop_cmd->cmd_tables->t_msgout.count = htole32(1); 870 siop_table_sync(siop_cmd, 871 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 872 CALL_SCRIPT(Ent_send_msgout); 873 return 1; 874 case A_int_disc: 875 INCSTAT(siop_stat_intr_sdp); 876 offset = bus_space_read_1(sc->sc_c.sc_rt, 877 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 878#ifdef SIOP_DEBUG_DR 879 printf("disconnect offset %d\n", offset); 880#endif 881 siop_sdp(&siop_cmd->cmd_c, offset); 882 siop_table_sync(siop_cmd, 883 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 884 CALL_SCRIPT(Ent_script_sched); 885 return 1; 886 case A_int_resfail: 887 printf("reselect failed\n"); 888 CALL_SCRIPT(Ent_script_sched); 889 return 1; 890 case A_int_done: 891 if (xs == NULL) { 892 printf("%s: done without command, DSA=0x%lx\n", 893 sc->sc_c.sc_dev.dv_xname, 894 (u_long)siop_cmd->cmd_c.dsa); 895 siop_cmd->cmd_c.status = CMDST_FREE; 896 CALL_SCRIPT(Ent_script_sched); 897 return 1; 898 } 899#ifdef SIOP_DEBUG_INTR 900 printf("done, DSA=0x%lx target id 0x%x last msg " 901 "in=0x%x status=0x%x\n", (u_long)siop_cmd->cmd_c.dsa, 902 le32toh(siop_cmd->cmd_tables->id), 903 siop_cmd->cmd_tables->msg_in[0], 904 le32toh(siop_cmd->cmd_tables->status)); 905#endif 906 INCSTAT(siop_stat_intr_done); 907 /* update resid. */ 908 offset = bus_space_read_1(sc->sc_c.sc_rt, 909 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 910 siop_update_resid(&siop_cmd->cmd_c, offset); 911 siop_cmd->cmd_c.status = CMDST_DONE; 912 goto end; 913 default: 914 printf("unknown irqcode %x\n", irqcode); 915 if (xs) { 916 xs->error = XS_SELTIMEOUT; 917 goto end; 918 } 919 goto reset; 920 } 921 return 1; 922 } 923 /* We just should't get there */ 924 panic("siop_intr: I shouldn't be there !"); 925 926end: 927 /* 928 * restart the script now if command completed properly 929 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 930 * queue 931 */ 932 xs->status = le32toh(siop_cmd->cmd_tables->status); 933 if (xs->status == SCSI_OK) 934 CALL_SCRIPT(Ent_script_sched); 935 else 936 restart = 1; 937 siop_lun->siop_tag[tag].active = NULL; 938 siop_scsicmd_end(siop_cmd); 939 if (freetarget && siop_target->target_c.status == TARST_PROBING) 940 siop_del_dev(sc, target, lun); 941 if (restart) 942 CALL_SCRIPT(Ent_script_sched); 943 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 944 /* a command terminated, so we have free slots now */ 945 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 946 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 947 } 948 949 return 1; 950} 951 952void 953siop_scsicmd_end(siop_cmd) 954 struct siop_cmd *siop_cmd; 955{ 956 struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; 957 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 958 959 switch(xs->status) { 960 case SCSI_OK: 961 xs->error = XS_NOERROR; 962 break; 963 case SCSI_BUSY: 964 xs->error = XS_BUSY; 965 break; 966 case SCSI_CHECK: 967 xs->error = XS_BUSY; 968 /* remove commands in the queue and scheduler */ 969 siop_unqueue(sc, xs->xs_periph->periph_target, 970 xs->xs_periph->periph_lun); 971 break; 972 case SCSI_QUEUE_FULL: 973 INCSTAT(siop_stat_intr_qfull); 974#ifdef SIOP_DEBUG 975 printf("%s:%d:%d: queue full (tag %d)\n", 976 sc->sc_c.sc_dev.dv_xname, 977 xs->xs_periph->periph_target, 978 xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); 979#endif 980 xs->error = XS_BUSY; 981 break; 982 case SCSI_SIOP_NOCHECK: 983 /* 984 * don't check status, xs->error is already valid 985 */ 986 break; 987 case SCSI_SIOP_NOSTATUS: 988 /* 989 * the status byte was not updated, cmd was 990 * aborted 991 */ 992 xs->error = XS_SELTIMEOUT; 993 break; 994 default: 995 scsipi_printaddr(xs->xs_periph); 996 printf("invalid status code %d\n", xs->status); 997 xs->error = XS_DRIVER_STUFFUP; 998 } 999 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1000 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, 0, 1001 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1002 (xs->xs_control & XS_CTL_DATA_IN) ? 1003 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1004 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data); 1005 } 1006 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); 1007 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1008 siop_cmd->cmd_c.status = CMDST_FREE; 1009 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1010#if 0 1011 if (xs->resid != 0) 1012 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1013#endif 1014 scsipi_done (xs); 1015} 1016 1017void 1018siop_unqueue(sc, target, lun) 1019 struct siop_softc *sc; 1020 int target; 1021 int lun; 1022{ 1023 int slot, tag; 1024 struct siop_cmd *siop_cmd; 1025 struct siop_lun *siop_lun = 1026 ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; 1027 1028 /* first make sure to read valid data */ 1029 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1030 1031 for (tag = 1; tag < SIOP_NTAG; tag++) { 1032 /* look for commands in the scheduler, not yet started */ 1033 if (siop_lun->siop_tag[tag].active == NULL) 1034 continue; 1035 siop_cmd = siop_lun->siop_tag[tag].active; 1036 for (slot = 0; slot <= sc->sc_currschedslot; slot++) { 1037 if (siop_script_read(sc, 1038 (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == 1039 siop_cmd->cmd_c.dsa + 1040 sizeof(struct siop_common_xfer) + 1041 Ent_ldsa_select) 1042 break; 1043 } 1044 if (slot > sc->sc_currschedslot) 1045 continue; /* didn't find it */ 1046 if (siop_script_read(sc, 1047 (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) 1048 continue; /* already started */ 1049 /* clear the slot */ 1050 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1051 0x80000000); 1052 /* ask to requeue */ 1053 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1054 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1055 siop_lun->siop_tag[tag].active = NULL; 1056 siop_scsicmd_end(siop_cmd); 1057 } 1058 /* update sc_currschedslot */ 1059 sc->sc_currschedslot = 0; 1060 for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { 1061 if (siop_script_read(sc, 1062 (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) 1063 sc->sc_currschedslot = slot; 1064 } 1065} 1066 1067/* 1068 * handle a rejected queue tag message: the command will run untagged, 1069 * has to adjust the reselect script. 1070 */ 1071int 1072siop_handle_qtag_reject(siop_cmd) 1073 struct siop_cmd *siop_cmd; 1074{ 1075 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1076 int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1077 int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1078 int tag = siop_cmd->cmd_tables->msg_out[2]; 1079 struct siop_lun *siop_lun = 1080 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1081 1082#ifdef SIOP_DEBUG 1083 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1084 sc->sc_c.sc_dev.dv_xname, target, lun, tag, siop_cmd->cmd_c.tag, 1085 siop_cmd->cmd_c.status); 1086#endif 1087 1088 if (siop_lun->siop_tag[0].active != NULL) { 1089 printf("%s: untagged command already running for target %d " 1090 "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, 1091 target, lun, siop_lun->siop_tag[0].active->cmd_c.status); 1092 return -1; 1093 } 1094 /* clear tag slot */ 1095 siop_lun->siop_tag[tag].active = NULL; 1096 /* add command to non-tagged slot */ 1097 siop_lun->siop_tag[0].active = siop_cmd; 1098 siop_cmd->cmd_c.tag = 0; 1099 /* adjust reselect script if there is one */ 1100 if (siop_lun->siop_tag[0].reseloff > 0) { 1101 siop_script_write(sc, 1102 siop_lun->siop_tag[0].reseloff + 1, 1103 siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + 1104 Ent_ldsa_reload_dsa); 1105 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1106 } 1107 return 0; 1108} 1109 1110/* 1111 * handle a bus reset: reset chip, unqueue all active commands, free all 1112 * target struct and report lossage to upper layer. 1113 * As the upper layer may requeue immediatly we have to first store 1114 * all active commands in a temporary queue. 1115 */ 1116void 1117siop_handle_reset(sc) 1118 struct siop_softc *sc; 1119{ 1120 struct siop_cmd *siop_cmd; 1121 struct siop_lun *siop_lun; 1122 int target, lun, tag; 1123 /* 1124 * scsi bus reset. reset the chip and restart 1125 * the queue. Need to clean up all active commands 1126 */ 1127 printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); 1128 /* stop, reset and restart the chip */ 1129 siop_reset(sc); 1130 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1131 /* chip has been reset, all slots are free now */ 1132 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1133 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1134 } 1135 /* 1136 * Process all commands: first commands being executed 1137 */ 1138 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1139 target++) { 1140 if (sc->sc_c.targets[target] == NULL) 1141 continue; 1142 for (lun = 0; lun < 8; lun++) { 1143 struct siop_target *siop_target = 1144 (struct siop_target *)sc->sc_c.targets[target]; 1145 siop_lun = siop_target->siop_lun[lun]; 1146 if (siop_lun == NULL) 1147 continue; 1148 for (tag = 0; tag < 1149 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1150 SIOP_NTAG : 1); 1151 tag++) { 1152 siop_cmd = siop_lun->siop_tag[tag].active; 1153 if (siop_cmd == NULL) 1154 continue; 1155 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1156 printf("command with tag id %d reset\n", tag); 1157 siop_cmd->cmd_c.xs->error = 1158 (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1159 XS_TIMEOUT : XS_RESET; 1160 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1161 siop_lun->siop_tag[tag].active = NULL; 1162 siop_cmd->cmd_c.status = CMDST_DONE; 1163 siop_scsicmd_end(siop_cmd); 1164 } 1165 } 1166 sc->sc_c.targets[target]->status = TARST_ASYNC; 1167 sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; 1168 sc->sc_c.targets[target]->period = 1169 sc->sc_c.targets[target]->offset = 0; 1170 siop_update_xfer_mode(&sc->sc_c, target); 1171 } 1172 1173 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1174} 1175 1176void 1177siop_scsipi_request(chan, req, arg) 1178 struct scsipi_channel *chan; 1179 scsipi_adapter_req_t req; 1180 void *arg; 1181{ 1182 struct scsipi_xfer *xs; 1183 struct scsipi_periph *periph; 1184 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1185 struct siop_cmd *siop_cmd; 1186 struct siop_target *siop_target; 1187 int s, error, i; 1188 int target; 1189 int lun; 1190 1191 switch (req) { 1192 case ADAPTER_REQ_RUN_XFER: 1193 xs = arg; 1194 periph = xs->xs_periph; 1195 target = periph->periph_target; 1196 lun = periph->periph_lun; 1197 1198 s = splbio(); 1199#ifdef SIOP_DEBUG_SCHED 1200 printf("starting cmd for %d:%d\n", target, lun); 1201#endif 1202 siop_cmd = TAILQ_FIRST(&sc->free_list); 1203 if (siop_cmd == NULL) { 1204 xs->error = XS_RESOURCE_SHORTAGE; 1205 scsipi_done(xs); 1206 splx(s); 1207 return; 1208 } 1209 TAILQ_REMOVE(&sc->free_list, siop_cmd, next); 1210#ifdef DIAGNOSTIC 1211 if (siop_cmd->cmd_c.status != CMDST_FREE) 1212 panic("siop_scsicmd: new cmd not free"); 1213#endif 1214 siop_target = (struct siop_target*)sc->sc_c.targets[target]; 1215 if (siop_target == NULL) { 1216#ifdef SIOP_DEBUG 1217 printf("%s: alloc siop_target for target %d\n", 1218 sc->sc_c.sc_dev.dv_xname, target); 1219#endif 1220 sc->sc_c.targets[target] = 1221 malloc(sizeof(struct siop_target), 1222 M_DEVBUF, M_NOWAIT); 1223 if (sc->sc_c.targets[target] == NULL) { 1224 printf("%s: can't malloc memory for " 1225 "target %d\n", sc->sc_c.sc_dev.dv_xname, 1226 target); 1227 xs->error = XS_RESOURCE_SHORTAGE; 1228 scsipi_done(xs); 1229 splx(s); 1230 return; 1231 } 1232 siop_target = 1233 (struct siop_target*)sc->sc_c.targets[target]; 1234 siop_target->target_c.status = TARST_PROBING; 1235 siop_target->target_c.flags = 0; 1236 siop_target->target_c.id = 1237 sc->sc_c.clock_div << 24; /* scntl3 */ 1238 siop_target->target_c.id |= target << 16; /* id */ 1239 /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1240 1241 /* get a lun switch script */ 1242 siop_target->lunsw = siop_get_lunsw(sc); 1243 if (siop_target->lunsw == NULL) { 1244 printf("%s: can't alloc lunsw for target %d\n", 1245 sc->sc_c.sc_dev.dv_xname, target); 1246 xs->error = XS_RESOURCE_SHORTAGE; 1247 scsipi_done(xs); 1248 splx(s); 1249 return; 1250 } 1251 for (i=0; i < 8; i++) 1252 siop_target->siop_lun[i] = NULL; 1253 siop_add_reselsw(sc, target); 1254 } 1255 if (siop_target->siop_lun[lun] == NULL) { 1256 siop_target->siop_lun[lun] = 1257 malloc(sizeof(struct siop_lun), M_DEVBUF, 1258 M_NOWAIT|M_ZERO); 1259 if (siop_target->siop_lun[lun] == NULL) { 1260 printf("%s: can't alloc siop_lun for " 1261 "target %d lun %d\n", 1262 sc->sc_c.sc_dev.dv_xname, target, lun); 1263 xs->error = XS_RESOURCE_SHORTAGE; 1264 scsipi_done(xs); 1265 splx(s); 1266 return; 1267 } 1268 } 1269 siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1270 siop_cmd->cmd_c.xs = xs; 1271 siop_cmd->cmd_c.flags = 0; 1272 siop_cmd->cmd_c.status = CMDST_READY; 1273 1274 /* load the DMA maps */ 1275 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1276 siop_cmd->cmd_c.dmamap_cmd, 1277 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1278 if (error) { 1279 printf("%s: unable to load cmd DMA map: %d\n", 1280 sc->sc_c.sc_dev.dv_xname, error); 1281 xs->error = XS_DRIVER_STUFFUP; 1282 scsipi_done(xs); 1283 splx(s); 1284 return; 1285 } 1286 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1287 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1288 siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1289 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1290 ((xs->xs_control & XS_CTL_DATA_IN) ? 1291 BUS_DMA_READ : BUS_DMA_WRITE)); 1292 if (error) { 1293 printf("%s: unable to load cmd DMA map: %d", 1294 sc->sc_c.sc_dev.dv_xname, error); 1295 xs->error = XS_DRIVER_STUFFUP; 1296 scsipi_done(xs); 1297 bus_dmamap_unload(sc->sc_c.sc_dmat, 1298 siop_cmd->cmd_c.dmamap_cmd); 1299 splx(s); 1300 return; 1301 } 1302 bus_dmamap_sync(sc->sc_c.sc_dmat, 1303 siop_cmd->cmd_c.dmamap_data, 0, 1304 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1305 (xs->xs_control & XS_CTL_DATA_IN) ? 1306 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1307 } 1308 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, 1309 siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1310 BUS_DMASYNC_PREWRITE); 1311 1312 if (xs->xs_tag_type) { 1313 /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ 1314 siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; 1315 } else { 1316 siop_cmd->cmd_c.tag = 0; 1317 } 1318 siop_setuptables(&siop_cmd->cmd_c); 1319 siop_table_sync(siop_cmd, 1320 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1321 siop_start(sc, siop_cmd); 1322 if (xs->xs_control & XS_CTL_POLL) { 1323 /* poll for command completion */ 1324 while ((xs->xs_status & XS_STS_DONE) == 0) { 1325 delay(1000); 1326 siop_intr(sc); 1327 } 1328 } 1329 splx(s); 1330 return; 1331 1332 case ADAPTER_REQ_GROW_RESOURCES: 1333#ifdef SIOP_DEBUG 1334 printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, 1335 sc->sc_c.sc_adapt.adapt_openings); 1336#endif 1337 siop_morecbd(sc); 1338 return; 1339 1340 case ADAPTER_REQ_SET_XFER_MODE: 1341 { 1342 struct scsipi_xfer_mode *xm = arg; 1343 if (sc->sc_c.targets[xm->xm_target] == NULL) 1344 return; 1345 s = splbio(); 1346 if (xm->xm_mode & PERIPH_CAP_TQING) 1347 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1348 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1349 (sc->sc_c.features & SF_BUS_WIDE)) 1350 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1351 if (xm->xm_mode & PERIPH_CAP_SYNC) 1352 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1353 if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || 1354 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1355 sc->sc_c.targets[xm->xm_target]->status = 1356 TARST_ASYNC; 1357 1358 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1359 if (scsipi_lookup_periph(chan, 1360 xm->xm_target, lun) != NULL) { 1361 /* allocate a lun sw entry for this device */ 1362 siop_add_dev(sc, xm->xm_target, lun); 1363 } 1364 } 1365 1366 splx(s); 1367 } 1368 } 1369} 1370 1371static void 1372siop_start(sc, siop_cmd) 1373 struct siop_softc *sc; 1374 struct siop_cmd *siop_cmd; 1375{ 1376 struct siop_lun *siop_lun; 1377 struct siop_xfer *siop_xfer; 1378 u_int32_t dsa; 1379 int timeout; 1380 int target, lun, slot; 1381 1382 /* 1383 * first make sure to read valid data 1384 */ 1385 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1386 1387 /* 1388 * The queue management here is a bit tricky: the script always looks 1389 * at the slot from first to last, so if we always use the first 1390 * free slot commands can stay at the tail of the queue ~forever. 1391 * The algorithm used here is to restart from the head when we know 1392 * that the queue is empty, and only add commands after the last one. 1393 * When we're at the end of the queue wait for the script to clear it. 1394 * The best thing to do here would be to implement a circular queue, 1395 * but using only 53c720 features this can be "interesting". 1396 * A mid-way solution could be to implement 2 queues and swap orders. 1397 */ 1398 slot = sc->sc_currschedslot; 1399 /* 1400 * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is 1401 * free. As this is the last used slot, all previous slots are free, 1402 * we can restart from 0. 1403 */ 1404 if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == 1405 0x80000000) { 1406 slot = sc->sc_currschedslot = 0; 1407 } else { 1408 slot++; 1409 } 1410 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1411 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1412 siop_lun = 1413 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1414 /* if non-tagged command active, panic: this shouldn't happen */ 1415 if (siop_lun->siop_tag[0].active != NULL) { 1416 panic("siop_start: tagged cmd while untagged running"); 1417 } 1418#ifdef DIAGNOSTIC 1419 /* sanity check the tag if needed */ 1420 if (siop_cmd->cmd_c.flags & CMDFL_TAG) { 1421 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) 1422 panic("siop_start: tag not free"); 1423 if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { 1424 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1425 printf(": tag id %d\n", siop_cmd->cmd_c.tag); 1426 panic("siop_start: invalid tag id"); 1427 } 1428 } 1429#endif 1430 /* 1431 * find a free scheduler slot and load it. 1432 */ 1433 for (; slot < SIOP_NSLOTS; slot++) { 1434 /* 1435 * If cmd if 0x80000000 the slot is free 1436 */ 1437 if (siop_script_read(sc, 1438 (Ent_script_sched_slot0 / 4) + slot * 2) == 1439 0x80000000) 1440 break; 1441 } 1442 if (slot == SIOP_NSLOTS) { 1443 /* 1444 * no more free slot, no need to continue. freeze the queue 1445 * and requeue this command. 1446 */ 1447 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1448 sc->sc_flags |= SCF_CHAN_NOSLOT; 1449 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1450 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1451 siop_scsicmd_end(siop_cmd); 1452 return; 1453 } 1454#ifdef SIOP_DEBUG_SCHED 1455 printf("using slot %d for DSA 0x%lx\n", slot, 1456 (u_long)siop_cmd->cmd_c.dsa); 1457#endif 1458 /* mark command as active */ 1459 if (siop_cmd->cmd_c.status == CMDST_READY) 1460 siop_cmd->cmd_c.status = CMDST_ACTIVE; 1461 else 1462 panic("siop_start: bad status"); 1463 siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; 1464 /* patch scripts with DSA addr */ 1465 dsa = siop_cmd->cmd_c.dsa; 1466 /* first reselect switch, if we have an entry */ 1467 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) 1468 siop_script_write(sc, 1469 siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, 1470 dsa + sizeof(struct siop_common_xfer) + 1471 Ent_ldsa_reload_dsa); 1472 /* CMD script: MOVE MEMORY addr */ 1473 siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; 1474 siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = 1475 htole32(sc->sc_c.sc_scriptaddr + Ent_script_sched_slot0 + slot * 8); 1476 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1477 /* scheduler slot: JUMP ldsa_select */ 1478 siop_script_write(sc, 1479 (Ent_script_sched_slot0 / 4) + slot * 2 + 1, 1480 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); 1481 /* handle timeout */ 1482 if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1483 /* start exire timer */ 1484 timeout = mstohz(siop_cmd->cmd_c.xs->timeout); 1485 if (timeout == 0) 1486 timeout = 1; 1487 callout_reset( &siop_cmd->cmd_c.xs->xs_callout, 1488 timeout, siop_timeout, siop_cmd); 1489 } 1490 /* 1491 * Change JUMP cmd so that this slot will be handled 1492 */ 1493 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1494 0x80080000); 1495 sc->sc_currschedslot = slot; 1496 1497 /* make sure SCRIPT processor will read valid data */ 1498 siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1499 /* Signal script it has some work to do */ 1500 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1501 SIOP_ISTAT, ISTAT_SIGP); 1502 /* and wait for IRQ */ 1503 return; 1504} 1505 1506void 1507siop_timeout(v) 1508 void *v; 1509{ 1510 struct siop_cmd *siop_cmd = v; 1511 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1512 int s; 1513 1514 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1515 printf("command timeout, CDB: "); 1516 scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); 1517 printf("\n"); 1518 1519 s = splbio(); 1520 /* reset the scsi bus */ 1521 siop_resetbus(&sc->sc_c); 1522 1523 /* deactivate callout */ 1524 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1525 /* mark command as being timed out; siop_intr will handle it */ 1526 /* 1527 * mark command has being timed out and just return; 1528 * the bus reset will generate an interrupt, 1529 * it will be handled in siop_intr() 1530 */ 1531 siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1532 splx(s); 1533 return; 1534 1535} 1536 1537void 1538siop_dump_script(sc) 1539 struct siop_softc *sc; 1540{ 1541 int i; 1542 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1543 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1544 le32toh(sc->sc_c.sc_script[i]), 1545 le32toh(sc->sc_c.sc_script[i+1])); 1546 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1547 0xc0000000) { 1548 i++; 1549 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); 1550 } 1551 printf("\n"); 1552 } 1553} 1554 1555void 1556siop_morecbd(sc) 1557 struct siop_softc *sc; 1558{ 1559 int error, i, j, s; 1560 bus_dma_segment_t seg; 1561 int rseg; 1562 struct siop_cbd *newcbd; 1563 struct siop_xfer *xfer; 1564 bus_addr_t dsa; 1565 u_int32_t *scr; 1566 1567 /* allocate a new list head */ 1568 newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1569 if (newcbd == NULL) { 1570 printf("%s: can't allocate memory for command descriptors " 1571 "head\n", sc->sc_c.sc_dev.dv_xname); 1572 return; 1573 } 1574 1575 /* allocate cmd list */ 1576 newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, 1577 M_DEVBUF, M_NOWAIT|M_ZERO); 1578 if (newcbd->cmds == NULL) { 1579 printf("%s: can't allocate memory for command descriptors\n", 1580 sc->sc_c.sc_dev.dv_xname); 1581 goto bad3; 1582 } 1583 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1584 1, &rseg, BUS_DMA_NOWAIT); 1585 if (error) { 1586 printf("%s: unable to allocate cbd DMA memory, error = %d\n", 1587 sc->sc_c.sc_dev.dv_xname, error); 1588 goto bad2; 1589 } 1590 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1591 (caddr_t *)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1592 if (error) { 1593 printf("%s: unable to map cbd DMA memory, error = %d\n", 1594 sc->sc_c.sc_dev.dv_xname, error); 1595 goto bad2; 1596 } 1597 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1598 BUS_DMA_NOWAIT, &newcbd->xferdma); 1599 if (error) { 1600 printf("%s: unable to create cbd DMA map, error = %d\n", 1601 sc->sc_c.sc_dev.dv_xname, error); 1602 goto bad1; 1603 } 1604 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, newcbd->xfers, 1605 PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1606 if (error) { 1607 printf("%s: unable to load cbd DMA map, error = %d\n", 1608 sc->sc_c.sc_dev.dv_xname, error); 1609 goto bad0; 1610 } 1611#ifdef DEBUG 1612 printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, 1613 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1614#endif 1615 for (i = 0; i < SIOP_NCMDPB; i++) { 1616 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1617 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1618 &newcbd->cmds[i].cmd_c.dmamap_data); 1619 if (error) { 1620 printf("%s: unable to create data DMA map for cbd: " 1621 "error %d\n", 1622 sc->sc_c.sc_dev.dv_xname, error); 1623 goto bad0; 1624 } 1625 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1626 sizeof(struct scsipi_generic), 1, 1627 sizeof(struct scsipi_generic), 0, 1628 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1629 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1630 if (error) { 1631 printf("%s: unable to create cmd DMA map for cbd %d\n", 1632 sc->sc_c.sc_dev.dv_xname, error); 1633 goto bad0; 1634 } 1635 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1636 newcbd->cmds[i].siop_cbdp = newcbd; 1637 xfer = &newcbd->xfers[i]; 1638 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1639 memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); 1640 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1641 i * sizeof(struct siop_xfer); 1642 newcbd->cmds[i].cmd_c.dsa = dsa; 1643 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1644 xfer->siop_tables.t_msgout.count= htole32(1); 1645 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1646 xfer->siop_tables.t_msgin.count= htole32(1); 1647 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1648 offsetof(struct siop_common_xfer, msg_in)); 1649 xfer->siop_tables.t_extmsgin.count= htole32(2); 1650 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1651 offsetof(struct siop_common_xfer, msg_in) + 1); 1652 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1653 offsetof(struct siop_common_xfer, msg_in) + 3); 1654 xfer->siop_tables.t_status.count= htole32(1); 1655 xfer->siop_tables.t_status.addr = htole32(dsa + 1656 offsetof(struct siop_common_xfer, status)); 1657 /* The select/reselect script */ 1658 scr = &xfer->resel[0]; 1659 for (j = 0; j < sizeof(load_dsa) / sizeof(load_dsa[0]); j++) 1660 scr[j] = htole32(load_dsa[j]); 1661 /* 1662 * 0x78000000 is a 'move data8 to reg'. data8 is the second 1663 * octet, reg offset is the third. 1664 */ 1665 scr[Ent_rdsa0 / 4] = 1666 htole32(0x78100000 | ((dsa & 0x000000ff) << 8)); 1667 scr[Ent_rdsa1 / 4] = 1668 htole32(0x78110000 | ( dsa & 0x0000ff00 )); 1669 scr[Ent_rdsa2 / 4] = 1670 htole32(0x78120000 | ((dsa & 0x00ff0000) >> 8)); 1671 scr[Ent_rdsa3 / 4] = 1672 htole32(0x78130000 | ((dsa & 0xff000000) >> 16)); 1673 scr[E_ldsa_abs_reselected_Used[0]] = 1674 htole32(sc->sc_c.sc_scriptaddr + Ent_reselected); 1675 scr[E_ldsa_abs_reselect_Used[0]] = 1676 htole32(sc->sc_c.sc_scriptaddr + Ent_reselect); 1677 scr[E_ldsa_abs_selected_Used[0]] = 1678 htole32(sc->sc_c.sc_scriptaddr + Ent_selected); 1679 scr[E_ldsa_abs_data_Used[0]] = 1680 htole32(dsa + sizeof(struct siop_common_xfer) + 1681 Ent_ldsa_data); 1682 /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ 1683 scr[Ent_ldsa_data / 4] = htole32(0x80000000); 1684 s = splbio(); 1685 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1686 splx(s); 1687#ifdef SIOP_DEBUG 1688 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1689 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1690 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1691 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1692#endif 1693 } 1694 s = splbio(); 1695 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1696 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1697 splx(s); 1698 return; 1699bad0: 1700 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1701 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1702bad1: 1703 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1704bad2: 1705 free(newcbd->cmds, M_DEVBUF); 1706bad3: 1707 free(newcbd, M_DEVBUF); 1708 return; 1709} 1710 1711struct siop_lunsw * 1712siop_get_lunsw(sc) 1713 struct siop_softc *sc; 1714{ 1715 struct siop_lunsw *lunsw; 1716 int i; 1717 1718 if (sc->script_free_lo + (sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1719 sc->script_free_hi) 1720 return NULL; 1721 lunsw = TAILQ_FIRST(&sc->lunsw_list); 1722 if (lunsw != NULL) { 1723#ifdef SIOP_DEBUG 1724 printf("siop_get_lunsw got lunsw at offset %d\n", 1725 lunsw->lunsw_off); 1726#endif 1727 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 1728 return lunsw; 1729 } 1730 lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); 1731 if (lunsw == NULL) 1732 return NULL; 1733#ifdef SIOP_DEBUG 1734 printf("allocating lunsw at offset %d\n", sc->script_free_lo); 1735#endif 1736 if (sc->sc_c.features & SF_CHIP_RAM) { 1737 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1738 sc->script_free_lo * 4, lun_switch, 1739 sizeof(lun_switch) / sizeof(lun_switch[0])); 1740 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1741 (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, 1742 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1743 } else { 1744 for (i = 0; i < sizeof(lun_switch) / sizeof(lun_switch[0]); 1745 i++) 1746 sc->sc_c.sc_script[sc->script_free_lo + i] = 1747 htole32(lun_switch[i]); 1748 sc->sc_c.sc_script[ 1749 sc->script_free_lo + E_abs_lunsw_return_Used[0]] = 1750 htole32(sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1751 } 1752 lunsw->lunsw_off = sc->script_free_lo; 1753 lunsw->lunsw_size = sizeof(lun_switch) / sizeof(lun_switch[0]); 1754 sc->script_free_lo += lunsw->lunsw_size; 1755 siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1756 return lunsw; 1757} 1758 1759void 1760siop_add_reselsw(sc, target) 1761 struct siop_softc *sc; 1762 int target; 1763{ 1764 int i, j; 1765 struct siop_target *siop_target; 1766 struct siop_lun *siop_lun; 1767 1768 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1769 /* 1770 * add an entry to resel switch 1771 */ 1772 siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); 1773 for (i = 0; i < 15; i++) { 1774 siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; 1775 if ((siop_script_read(sc, siop_target->reseloff) & 0xff) 1776 == 0xff) { /* it's free */ 1777#ifdef SIOP_DEBUG 1778 printf("siop: target %d slot %d offset %d\n", 1779 target, i, siop_target->reseloff); 1780#endif 1781 /* JUMP abs_foo, IF target | 0x80; */ 1782 siop_script_write(sc, siop_target->reseloff, 1783 0x800c0080 | target); 1784 siop_script_write(sc, siop_target->reseloff + 1, 1785 sc->sc_c.sc_scriptaddr + 1786 siop_target->lunsw->lunsw_off * 4 + 1787 Ent_lun_switch_entry); 1788 break; 1789 } 1790 } 1791 if (i == 15) /* no free slot, shouldn't happen */ 1792 panic("siop: resel switch full"); 1793 1794 sc->sc_ntargets++; 1795 for (i = 0; i < 8; i++) { 1796 siop_lun = siop_target->siop_lun[i]; 1797 if (siop_lun == NULL) 1798 continue; 1799 if (siop_lun->reseloff > 0) { 1800 siop_lun->reseloff = 0; 1801 for (j = 0; j < SIOP_NTAG; j++) 1802 siop_lun->siop_tag[j].reseloff = 0; 1803 siop_add_dev(sc, target, i); 1804 } 1805 } 1806 siop_update_scntl3(sc, sc->sc_c.targets[target]); 1807 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1808} 1809 1810void 1811siop_update_scntl3(sc, _siop_target) 1812 struct siop_softc *sc; 1813 struct siop_common_target *_siop_target; 1814{ 1815 struct siop_target *siop_target = (struct siop_target *)_siop_target; 1816 /* MOVE target->id >> 24 TO SCNTL3 */ 1817 siop_script_write(sc, 1818 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), 1819 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); 1820 /* MOVE target->id >> 8 TO SXFER */ 1821 siop_script_write(sc, 1822 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, 1823 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); 1824 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1825} 1826 1827void 1828siop_add_dev(sc, target, lun) 1829 struct siop_softc *sc; 1830 int target; 1831 int lun; 1832{ 1833 struct siop_lunsw *lunsw; 1834 struct siop_target *siop_target = 1835 (struct siop_target *)sc->sc_c.targets[target]; 1836 struct siop_lun *siop_lun = siop_target->siop_lun[lun]; 1837 int i, ntargets; 1838 1839 if (siop_lun->reseloff > 0) 1840 return; 1841 lunsw = siop_target->lunsw; 1842 if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { 1843 /* 1844 * can't extend this slot. Probably not worth trying to deal 1845 * with this case 1846 */ 1847#ifdef DEBUG 1848 printf("%s:%d:%d: can't allocate a lun sw slot\n", 1849 sc->sc_c.sc_dev.dv_xname, target, lun); 1850#endif 1851 return; 1852 } 1853 /* count how many free targets we still have to probe */ 1854 ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; 1855 1856 /* 1857 * we need 8 bytes for the lun sw additional entry, and 1858 * eventually sizeof(tag_switch) for the tag switch entry. 1859 * Keep enough free space for the free targets that could be 1860 * probed later. 1861 */ 1862 if (sc->script_free_lo + 2 + 1863 (ntargets * sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1864 ((siop_target->target_c.flags & TARF_TAG) ? 1865 sc->script_free_hi - (sizeof(tag_switch) / sizeof(tag_switch[0])) : 1866 sc->script_free_hi)) { 1867 /* 1868 * not enough space, probably not worth dealing with it. 1869 * We can hold 13 tagged-queuing capable devices in the 4k RAM. 1870 */ 1871#ifdef DEBUG 1872 printf("%s:%d:%d: not enough memory for a lun sw slot\n", 1873 sc->sc_c.sc_dev.dv_xname, target, lun); 1874#endif 1875 return; 1876 } 1877#ifdef SIOP_DEBUG 1878 printf("%s:%d:%d: allocate lun sw entry\n", 1879 sc->sc_c.sc_dev.dv_xname, target, lun); 1880#endif 1881 /* INT int_resellun */ 1882 siop_script_write(sc, sc->script_free_lo, 0x98080000); 1883 siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); 1884 /* Now the slot entry: JUMP abs_foo, IF lun */ 1885 siop_script_write(sc, sc->script_free_lo - 2, 1886 0x800c0000 | lun); 1887 siop_script_write(sc, sc->script_free_lo - 1, 0); 1888 siop_lun->reseloff = sc->script_free_lo - 2; 1889 lunsw->lunsw_size += 2; 1890 sc->script_free_lo += 2; 1891 if (siop_target->target_c.flags & TARF_TAG) { 1892 /* we need a tag switch */ 1893 sc->script_free_hi -= 1894 sizeof(tag_switch) / sizeof(tag_switch[0]); 1895 if (sc->sc_c.features & SF_CHIP_RAM) { 1896 bus_space_write_region_4(sc->sc_c.sc_ramt, 1897 sc->sc_c.sc_ramh, 1898 sc->script_free_hi * 4, tag_switch, 1899 sizeof(tag_switch) / sizeof(tag_switch[0])); 1900 } else { 1901 for(i = 0; 1902 i < sizeof(tag_switch) / sizeof(tag_switch[0]); 1903 i++) { 1904 sc->sc_c.sc_script[sc->script_free_hi + i] = 1905 htole32(tag_switch[i]); 1906 } 1907 } 1908 siop_script_write(sc, 1909 siop_lun->reseloff + 1, 1910 sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + 1911 Ent_tag_switch_entry); 1912 1913 for (i = 0; i < SIOP_NTAG; i++) { 1914 siop_lun->siop_tag[i].reseloff = 1915 sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; 1916 } 1917 } else { 1918 /* non-tag case; just work with the lun switch */ 1919 siop_lun->siop_tag[0].reseloff = 1920 siop_target->siop_lun[lun]->reseloff; 1921 } 1922 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1923} 1924 1925void 1926siop_del_dev(sc, target, lun) 1927 struct siop_softc *sc; 1928 int target; 1929 int lun; 1930{ 1931 int i; 1932 struct siop_target *siop_target; 1933#ifdef SIOP_DEBUG 1934 printf("%s:%d:%d: free lun sw entry\n", 1935 sc->sc_c.sc_dev.dv_xname, target, lun); 1936#endif 1937 if (sc->sc_c.targets[target] == NULL) 1938 return; 1939 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1940 free(siop_target->siop_lun[lun], M_DEVBUF); 1941 siop_target->siop_lun[lun] = NULL; 1942 /* XXX compact sw entry too ? */ 1943 /* check if we can free the whole target */ 1944 for (i = 0; i < 8; i++) { 1945 if (siop_target->siop_lun[i] != NULL) 1946 return; 1947 } 1948#ifdef SIOP_DEBUG 1949 printf("%s: free siop_target for target %d lun %d lunsw offset %d\n", 1950 sc->sc_c.sc_dev.dv_xname, target, lun, 1951 sc->sc_c.targets[target]->lunsw->lunsw_off); 1952#endif 1953 /* 1954 * nothing here, free the target struct and resel 1955 * switch entry 1956 */ 1957 siop_script_write(sc, siop_target->reseloff, 0x800c00ff); 1958 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1959 TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); 1960 free(sc->sc_c.targets[target], M_DEVBUF); 1961 sc->sc_c.targets[target] = NULL; 1962 sc->sc_ntargets--; 1963} 1964 1965#ifdef SIOP_STATS 1966void 1967siop_printstats() 1968{ 1969 printf("siop_stat_intr %d\n", siop_stat_intr); 1970 printf("siop_stat_intr_shortxfer %d\n", siop_stat_intr_shortxfer); 1971 printf("siop_stat_intr_xferdisc %d\n", siop_stat_intr_xferdisc); 1972 printf("siop_stat_intr_sdp %d\n", siop_stat_intr_sdp); 1973 printf("siop_stat_intr_done %d\n", siop_stat_intr_done); 1974 printf("siop_stat_intr_lunresel %d\n", siop_stat_intr_lunresel); 1975 printf("siop_stat_intr_qfull %d\n", siop_stat_intr_qfull); 1976} 1977#endif 1978