1 /* $NetBSD: siop.c,v 1.76 2004/10/03 14:52:53 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 1.76 2004/10/03 14:52:53 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 85 void siop_reset __P((struct siop_softc *)); 86 void siop_handle_reset __P((struct siop_softc *)); 87 int siop_handle_qtag_reject __P((struct siop_cmd *)); 88 void siop_scsicmd_end __P((struct siop_cmd *)); 89 void siop_unqueue __P((struct siop_softc *, int, int)); 90 static void siop_start __P((struct siop_softc *, struct siop_cmd *)); 91 void siop_timeout __P((void *)); 92 int siop_scsicmd __P((struct scsipi_xfer *)); 93 void siop_scsipi_request __P((struct scsipi_channel *, 94 scsipi_adapter_req_t, void *)); 95 void siop_dump_script __P((struct siop_softc *)); 96 void siop_morecbd __P((struct siop_softc *)); 97 struct siop_lunsw *siop_get_lunsw __P((struct siop_softc *)); 98 void siop_add_reselsw __P((struct siop_softc *, int)); 99 void siop_update_scntl3 __P((struct siop_softc *, 100 struct siop_common_target *)); 101 102 #ifdef SIOP_STATS 103 static int siop_stat_intr = 0; 104 static int siop_stat_intr_shortxfer = 0; 105 static int siop_stat_intr_sdp = 0; 106 static int siop_stat_intr_done = 0; 107 static int siop_stat_intr_xferdisc = 0; 108 static int siop_stat_intr_lunresel = 0; 109 static int siop_stat_intr_qfull = 0; 110 void siop_printstats __P((void)); 111 #define INCSTAT(x) x++ 112 #else 113 #define INCSTAT(x) 114 #endif 115 116 static __inline__ void siop_script_sync __P((struct siop_softc *, int)); 117 static __inline__ void 118 siop_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 } 126 127 static __inline__ u_int32_t siop_script_read __P((struct siop_softc *, u_int)); 128 static __inline__ u_int32_t 129 siop_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 } 140 141 static __inline__ void siop_script_write __P((struct siop_softc *, u_int, 142 u_int32_t)); 143 static __inline__ void 144 siop_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 } 156 157 void 158 siop_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 } 189 190 void 191 siop_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); \ 301 bus_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 {\ 305 bus_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 308 309 int 310 siop_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) { 603 reset: 604 /* fatal error, reset the bus */ 605 siop_resetbus(&sc->sc_c); 606 /* no table to flush here */ 607 return 1; 608 } 609 610 scintr: 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 (msgin == MSG_IGN_WIDE_RESIDUE) { 783 /* use the extmsgdata table to get the second byte */ 784 siop_cmd->cmd_tables->t_extmsgdata.count = 785 htole32(1); 786 siop_table_sync(siop_cmd, 787 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 788 CALL_SCRIPT(Ent_get_extmsgdata); 789 return 1; 790 } 791 if (xs) 792 scsipi_printaddr(xs->xs_periph); 793 else 794 printf("%s: ", sc->sc_c.sc_dev.dv_xname); 795 printf("unhandled message 0x%x\n", 796 siop_cmd->cmd_tables->msg_in[0]); 797 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 798 siop_cmd->cmd_tables->t_msgout.count= htole32(1); 799 siop_table_sync(siop_cmd, 800 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 801 CALL_SCRIPT(Ent_send_msgout); 802 return 1; 803 } 804 case A_int_extmsgin: 805 #ifdef SIOP_DEBUG_INTR 806 printf("extended message: msg 0x%x len %d\n", 807 siop_cmd->cmd_tables->msg_in[2], 808 siop_cmd->cmd_tables->msg_in[1]); 809 #endif 810 if (siop_cmd->cmd_tables->msg_in[1] > 811 sizeof(siop_cmd->cmd_tables->msg_in) - 2) 812 printf("%s: extended message too big (%d)\n", 813 sc->sc_c.sc_dev.dv_xname, 814 siop_cmd->cmd_tables->msg_in[1]); 815 siop_cmd->cmd_tables->t_extmsgdata.count = 816 htole32(siop_cmd->cmd_tables->msg_in[1] - 1); 817 siop_table_sync(siop_cmd, 818 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 819 CALL_SCRIPT(Ent_get_extmsgdata); 820 return 1; 821 case A_int_extmsgdata: 822 #ifdef SIOP_DEBUG_INTR 823 { 824 int i; 825 printf("extended message: 0x%x, data:", 826 siop_cmd->cmd_tables->msg_in[2]); 827 for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; 828 i++) 829 printf(" 0x%x", 830 siop_cmd->cmd_tables->msg_in[i]); 831 printf("\n"); 832 } 833 #endif 834 if (siop_cmd->cmd_tables->msg_in[0] == 835 MSG_IGN_WIDE_RESIDUE) { 836 /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ 837 if (siop_cmd->cmd_tables->msg_in[3] != 1) 838 printf("MSG_IGN_WIDE_RESIDUE: " 839 "bad len %d\n", 840 siop_cmd->cmd_tables->msg_in[3]); 841 switch (siop_iwr(&siop_cmd->cmd_c)) { 842 case SIOP_NEG_MSGOUT: 843 siop_table_sync(siop_cmd, 844 BUS_DMASYNC_PREREAD | 845 BUS_DMASYNC_PREWRITE); 846 CALL_SCRIPT(Ent_send_msgout); 847 return(1); 848 case SIOP_NEG_ACK: 849 CALL_SCRIPT(Ent_msgin_ack); 850 return(1); 851 default: 852 panic("invalid retval from " 853 "siop_iwr()"); 854 } 855 return(1); 856 } 857 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 858 switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { 859 case SIOP_NEG_MSGOUT: 860 siop_update_scntl3(sc, 861 siop_cmd->cmd_c.siop_target); 862 siop_table_sync(siop_cmd, 863 BUS_DMASYNC_PREREAD | 864 BUS_DMASYNC_PREWRITE); 865 CALL_SCRIPT(Ent_send_msgout); 866 return(1); 867 case SIOP_NEG_ACK: 868 siop_update_scntl3(sc, 869 siop_cmd->cmd_c.siop_target); 870 CALL_SCRIPT(Ent_msgin_ack); 871 return(1); 872 default: 873 panic("invalid retval from " 874 "siop_wdtr_neg()"); 875 } 876 return(1); 877 } 878 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 879 switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { 880 case SIOP_NEG_MSGOUT: 881 siop_update_scntl3(sc, 882 siop_cmd->cmd_c.siop_target); 883 siop_table_sync(siop_cmd, 884 BUS_DMASYNC_PREREAD | 885 BUS_DMASYNC_PREWRITE); 886 CALL_SCRIPT(Ent_send_msgout); 887 return(1); 888 case SIOP_NEG_ACK: 889 siop_update_scntl3(sc, 890 siop_cmd->cmd_c.siop_target); 891 CALL_SCRIPT(Ent_msgin_ack); 892 return(1); 893 default: 894 panic("invalid retval from " 895 "siop_wdtr_neg()"); 896 } 897 return(1); 898 } 899 /* send a message reject */ 900 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 901 siop_cmd->cmd_tables->t_msgout.count = htole32(1); 902 siop_table_sync(siop_cmd, 903 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 904 CALL_SCRIPT(Ent_send_msgout); 905 return 1; 906 case A_int_disc: 907 INCSTAT(siop_stat_intr_sdp); 908 offset = bus_space_read_1(sc->sc_c.sc_rt, 909 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 910 #ifdef SIOP_DEBUG_DR 911 printf("disconnect offset %d\n", offset); 912 #endif 913 siop_sdp(&siop_cmd->cmd_c, offset); 914 siop_table_sync(siop_cmd, 915 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 916 CALL_SCRIPT(Ent_script_sched); 917 return 1; 918 case A_int_resfail: 919 printf("reselect failed\n"); 920 CALL_SCRIPT(Ent_script_sched); 921 return 1; 922 case A_int_done: 923 if (xs == NULL) { 924 printf("%s: done without command, DSA=0x%lx\n", 925 sc->sc_c.sc_dev.dv_xname, 926 (u_long)siop_cmd->cmd_c.dsa); 927 siop_cmd->cmd_c.status = CMDST_FREE; 928 CALL_SCRIPT(Ent_script_sched); 929 return 1; 930 } 931 #ifdef SIOP_DEBUG_INTR 932 printf("done, DSA=0x%lx target id 0x%x last msg " 933 "in=0x%x status=0x%x\n", (u_long)siop_cmd->cmd_c.dsa, 934 le32toh(siop_cmd->cmd_tables->id), 935 siop_cmd->cmd_tables->msg_in[0], 936 le32toh(siop_cmd->cmd_tables->status)); 937 #endif 938 INCSTAT(siop_stat_intr_done); 939 /* update resid. */ 940 offset = bus_space_read_1(sc->sc_c.sc_rt, 941 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 942 siop_update_resid(&siop_cmd->cmd_c, offset); 943 siop_cmd->cmd_c.status = CMDST_DONE; 944 goto end; 945 default: 946 printf("unknown irqcode %x\n", irqcode); 947 if (xs) { 948 xs->error = XS_SELTIMEOUT; 949 goto end; 950 } 951 goto reset; 952 } 953 return 1; 954 } 955 /* We just should't get there */ 956 panic("siop_intr: I shouldn't be there !"); 957 958 end: 959 /* 960 * restart the script now if command completed properly 961 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 962 * queue 963 */ 964 xs->status = le32toh(siop_cmd->cmd_tables->status); 965 if (xs->status == SCSI_OK) 966 CALL_SCRIPT(Ent_script_sched); 967 else 968 restart = 1; 969 siop_lun->siop_tag[tag].active = NULL; 970 siop_scsicmd_end(siop_cmd); 971 if (freetarget && siop_target->target_c.status == TARST_PROBING) 972 siop_del_dev(sc, target, lun); 973 if (restart) 974 CALL_SCRIPT(Ent_script_sched); 975 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 976 /* a command terminated, so we have free slots now */ 977 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 978 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 979 } 980 981 return 1; 982 } 983 984 void 985 siop_scsicmd_end(siop_cmd) 986 struct siop_cmd *siop_cmd; 987 { 988 struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; 989 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 990 991 switch(xs->status) { 992 case SCSI_OK: 993 xs->error = XS_NOERROR; 994 break; 995 case SCSI_BUSY: 996 xs->error = XS_BUSY; 997 break; 998 case SCSI_CHECK: 999 xs->error = XS_BUSY; 1000 /* remove commands in the queue and scheduler */ 1001 siop_unqueue(sc, xs->xs_periph->periph_target, 1002 xs->xs_periph->periph_lun); 1003 break; 1004 case SCSI_QUEUE_FULL: 1005 INCSTAT(siop_stat_intr_qfull); 1006 #ifdef SIOP_DEBUG 1007 printf("%s:%d:%d: queue full (tag %d)\n", 1008 sc->sc_c.sc_dev.dv_xname, 1009 xs->xs_periph->periph_target, 1010 xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); 1011 #endif 1012 xs->error = XS_BUSY; 1013 break; 1014 case SCSI_SIOP_NOCHECK: 1015 /* 1016 * don't check status, xs->error is already valid 1017 */ 1018 break; 1019 case SCSI_SIOP_NOSTATUS: 1020 /* 1021 * the status byte was not updated, cmd was 1022 * aborted 1023 */ 1024 xs->error = XS_SELTIMEOUT; 1025 break; 1026 default: 1027 scsipi_printaddr(xs->xs_periph); 1028 printf("invalid status code %d\n", xs->status); 1029 xs->error = XS_DRIVER_STUFFUP; 1030 } 1031 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1032 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, 0, 1033 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1034 (xs->xs_control & XS_CTL_DATA_IN) ? 1035 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1036 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data); 1037 } 1038 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); 1039 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1040 siop_cmd->cmd_c.status = CMDST_FREE; 1041 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1042 #if 0 1043 if (xs->resid != 0) 1044 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1045 #endif 1046 scsipi_done (xs); 1047 } 1048 1049 void 1050 siop_unqueue(sc, target, lun) 1051 struct siop_softc *sc; 1052 int target; 1053 int lun; 1054 { 1055 int slot, tag; 1056 struct siop_cmd *siop_cmd; 1057 struct siop_lun *siop_lun = 1058 ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; 1059 1060 /* first make sure to read valid data */ 1061 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1062 1063 for (tag = 1; tag < SIOP_NTAG; tag++) { 1064 /* look for commands in the scheduler, not yet started */ 1065 if (siop_lun->siop_tag[tag].active == NULL) 1066 continue; 1067 siop_cmd = siop_lun->siop_tag[tag].active; 1068 for (slot = 0; slot <= sc->sc_currschedslot; slot++) { 1069 if (siop_script_read(sc, 1070 (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == 1071 siop_cmd->cmd_c.dsa + 1072 sizeof(struct siop_common_xfer) + 1073 Ent_ldsa_select) 1074 break; 1075 } 1076 if (slot > sc->sc_currschedslot) 1077 continue; /* didn't find it */ 1078 if (siop_script_read(sc, 1079 (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) 1080 continue; /* already started */ 1081 /* clear the slot */ 1082 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1083 0x80000000); 1084 /* ask to requeue */ 1085 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1086 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1087 siop_lun->siop_tag[tag].active = NULL; 1088 siop_scsicmd_end(siop_cmd); 1089 } 1090 /* update sc_currschedslot */ 1091 sc->sc_currschedslot = 0; 1092 for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { 1093 if (siop_script_read(sc, 1094 (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) 1095 sc->sc_currschedslot = slot; 1096 } 1097 } 1098 1099 /* 1100 * handle a rejected queue tag message: the command will run untagged, 1101 * has to adjust the reselect script. 1102 */ 1103 int 1104 siop_handle_qtag_reject(siop_cmd) 1105 struct siop_cmd *siop_cmd; 1106 { 1107 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1108 int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1109 int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1110 int tag = siop_cmd->cmd_tables->msg_out[2]; 1111 struct siop_lun *siop_lun = 1112 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1113 1114 #ifdef SIOP_DEBUG 1115 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1116 sc->sc_c.sc_dev.dv_xname, target, lun, tag, siop_cmd->cmd_c.tag, 1117 siop_cmd->cmd_c.status); 1118 #endif 1119 1120 if (siop_lun->siop_tag[0].active != NULL) { 1121 printf("%s: untagged command already running for target %d " 1122 "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, 1123 target, lun, siop_lun->siop_tag[0].active->cmd_c.status); 1124 return -1; 1125 } 1126 /* clear tag slot */ 1127 siop_lun->siop_tag[tag].active = NULL; 1128 /* add command to non-tagged slot */ 1129 siop_lun->siop_tag[0].active = siop_cmd; 1130 siop_cmd->cmd_c.tag = 0; 1131 /* adjust reselect script if there is one */ 1132 if (siop_lun->siop_tag[0].reseloff > 0) { 1133 siop_script_write(sc, 1134 siop_lun->siop_tag[0].reseloff + 1, 1135 siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + 1136 Ent_ldsa_reload_dsa); 1137 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1138 } 1139 return 0; 1140 } 1141 1142 /* 1143 * handle a bus reset: reset chip, unqueue all active commands, free all 1144 * target struct and report lossage to upper layer. 1145 * As the upper layer may requeue immediatly we have to first store 1146 * all active commands in a temporary queue. 1147 */ 1148 void 1149 siop_handle_reset(sc) 1150 struct siop_softc *sc; 1151 { 1152 struct siop_cmd *siop_cmd; 1153 struct siop_lun *siop_lun; 1154 int target, lun, tag; 1155 /* 1156 * scsi bus reset. reset the chip and restart 1157 * the queue. Need to clean up all active commands 1158 */ 1159 printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); 1160 /* stop, reset and restart the chip */ 1161 siop_reset(sc); 1162 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1163 /* chip has been reset, all slots are free now */ 1164 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1165 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1166 } 1167 /* 1168 * Process all commands: first commands being executed 1169 */ 1170 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1171 target++) { 1172 if (sc->sc_c.targets[target] == NULL) 1173 continue; 1174 for (lun = 0; lun < 8; lun++) { 1175 struct siop_target *siop_target = 1176 (struct siop_target *)sc->sc_c.targets[target]; 1177 siop_lun = siop_target->siop_lun[lun]; 1178 if (siop_lun == NULL) 1179 continue; 1180 for (tag = 0; tag < 1181 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1182 SIOP_NTAG : 1); 1183 tag++) { 1184 siop_cmd = siop_lun->siop_tag[tag].active; 1185 if (siop_cmd == NULL) 1186 continue; 1187 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1188 printf("command with tag id %d reset\n", tag); 1189 siop_cmd->cmd_c.xs->error = 1190 (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1191 XS_TIMEOUT : XS_RESET; 1192 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1193 siop_lun->siop_tag[tag].active = NULL; 1194 siop_cmd->cmd_c.status = CMDST_DONE; 1195 siop_scsicmd_end(siop_cmd); 1196 } 1197 } 1198 sc->sc_c.targets[target]->status = TARST_ASYNC; 1199 sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; 1200 sc->sc_c.targets[target]->period = 1201 sc->sc_c.targets[target]->offset = 0; 1202 siop_update_xfer_mode(&sc->sc_c, target); 1203 } 1204 1205 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1206 } 1207 1208 void 1209 siop_scsipi_request(chan, req, arg) 1210 struct scsipi_channel *chan; 1211 scsipi_adapter_req_t req; 1212 void *arg; 1213 { 1214 struct scsipi_xfer *xs; 1215 struct scsipi_periph *periph; 1216 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1217 struct siop_cmd *siop_cmd; 1218 struct siop_target *siop_target; 1219 int s, error, i; 1220 int target; 1221 int lun; 1222 1223 switch (req) { 1224 case ADAPTER_REQ_RUN_XFER: 1225 xs = arg; 1226 periph = xs->xs_periph; 1227 target = periph->periph_target; 1228 lun = periph->periph_lun; 1229 1230 s = splbio(); 1231 #ifdef SIOP_DEBUG_SCHED 1232 printf("starting cmd for %d:%d\n", target, lun); 1233 #endif 1234 siop_cmd = TAILQ_FIRST(&sc->free_list); 1235 if (siop_cmd == NULL) { 1236 xs->error = XS_RESOURCE_SHORTAGE; 1237 scsipi_done(xs); 1238 splx(s); 1239 return; 1240 } 1241 TAILQ_REMOVE(&sc->free_list, siop_cmd, next); 1242 #ifdef DIAGNOSTIC 1243 if (siop_cmd->cmd_c.status != CMDST_FREE) 1244 panic("siop_scsicmd: new cmd not free"); 1245 #endif 1246 siop_target = (struct siop_target*)sc->sc_c.targets[target]; 1247 if (siop_target == NULL) { 1248 #ifdef SIOP_DEBUG 1249 printf("%s: alloc siop_target for target %d\n", 1250 sc->sc_c.sc_dev.dv_xname, target); 1251 #endif 1252 sc->sc_c.targets[target] = 1253 malloc(sizeof(struct siop_target), 1254 M_DEVBUF, M_NOWAIT); 1255 if (sc->sc_c.targets[target] == NULL) { 1256 printf("%s: can't malloc memory for " 1257 "target %d\n", sc->sc_c.sc_dev.dv_xname, 1258 target); 1259 xs->error = XS_RESOURCE_SHORTAGE; 1260 scsipi_done(xs); 1261 splx(s); 1262 return; 1263 } 1264 siop_target = 1265 (struct siop_target*)sc->sc_c.targets[target]; 1266 siop_target->target_c.status = TARST_PROBING; 1267 siop_target->target_c.flags = 0; 1268 siop_target->target_c.id = 1269 sc->sc_c.clock_div << 24; /* scntl3 */ 1270 siop_target->target_c.id |= target << 16; /* id */ 1271 /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1272 1273 /* get a lun switch script */ 1274 siop_target->lunsw = siop_get_lunsw(sc); 1275 if (siop_target->lunsw == NULL) { 1276 printf("%s: can't alloc lunsw for target %d\n", 1277 sc->sc_c.sc_dev.dv_xname, target); 1278 xs->error = XS_RESOURCE_SHORTAGE; 1279 scsipi_done(xs); 1280 splx(s); 1281 return; 1282 } 1283 for (i=0; i < 8; i++) 1284 siop_target->siop_lun[i] = NULL; 1285 siop_add_reselsw(sc, target); 1286 } 1287 if (siop_target->siop_lun[lun] == NULL) { 1288 siop_target->siop_lun[lun] = 1289 malloc(sizeof(struct siop_lun), M_DEVBUF, 1290 M_NOWAIT|M_ZERO); 1291 if (siop_target->siop_lun[lun] == NULL) { 1292 printf("%s: can't alloc siop_lun for " 1293 "target %d lun %d\n", 1294 sc->sc_c.sc_dev.dv_xname, target, lun); 1295 xs->error = XS_RESOURCE_SHORTAGE; 1296 scsipi_done(xs); 1297 splx(s); 1298 return; 1299 } 1300 } 1301 siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1302 siop_cmd->cmd_c.xs = xs; 1303 siop_cmd->cmd_c.flags = 0; 1304 siop_cmd->cmd_c.status = CMDST_READY; 1305 1306 /* load the DMA maps */ 1307 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1308 siop_cmd->cmd_c.dmamap_cmd, 1309 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1310 if (error) { 1311 printf("%s: unable to load cmd DMA map: %d\n", 1312 sc->sc_c.sc_dev.dv_xname, error); 1313 xs->error = XS_DRIVER_STUFFUP; 1314 scsipi_done(xs); 1315 splx(s); 1316 return; 1317 } 1318 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1319 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1320 siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1321 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1322 ((xs->xs_control & XS_CTL_DATA_IN) ? 1323 BUS_DMA_READ : BUS_DMA_WRITE)); 1324 if (error) { 1325 printf("%s: unable to load cmd DMA map: %d", 1326 sc->sc_c.sc_dev.dv_xname, error); 1327 xs->error = XS_DRIVER_STUFFUP; 1328 scsipi_done(xs); 1329 bus_dmamap_unload(sc->sc_c.sc_dmat, 1330 siop_cmd->cmd_c.dmamap_cmd); 1331 splx(s); 1332 return; 1333 } 1334 bus_dmamap_sync(sc->sc_c.sc_dmat, 1335 siop_cmd->cmd_c.dmamap_data, 0, 1336 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1337 (xs->xs_control & XS_CTL_DATA_IN) ? 1338 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1339 } 1340 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, 1341 siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1342 BUS_DMASYNC_PREWRITE); 1343 1344 if (xs->xs_tag_type) { 1345 /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ 1346 siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; 1347 } else { 1348 siop_cmd->cmd_c.tag = 0; 1349 } 1350 siop_setuptables(&siop_cmd->cmd_c); 1351 siop_table_sync(siop_cmd, 1352 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1353 siop_start(sc, siop_cmd); 1354 if (xs->xs_control & XS_CTL_POLL) { 1355 /* poll for command completion */ 1356 while ((xs->xs_status & XS_STS_DONE) == 0) { 1357 delay(1000); 1358 siop_intr(sc); 1359 } 1360 } 1361 splx(s); 1362 return; 1363 1364 case ADAPTER_REQ_GROW_RESOURCES: 1365 #ifdef SIOP_DEBUG 1366 printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, 1367 sc->sc_c.sc_adapt.adapt_openings); 1368 #endif 1369 siop_morecbd(sc); 1370 return; 1371 1372 case ADAPTER_REQ_SET_XFER_MODE: 1373 { 1374 struct scsipi_xfer_mode *xm = arg; 1375 if (sc->sc_c.targets[xm->xm_target] == NULL) 1376 return; 1377 s = splbio(); 1378 if (xm->xm_mode & PERIPH_CAP_TQING) 1379 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1380 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1381 (sc->sc_c.features & SF_BUS_WIDE)) 1382 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1383 if (xm->xm_mode & PERIPH_CAP_SYNC) 1384 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1385 if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || 1386 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1387 sc->sc_c.targets[xm->xm_target]->status = 1388 TARST_ASYNC; 1389 1390 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1391 if (scsipi_lookup_periph(chan, 1392 xm->xm_target, lun) != NULL) { 1393 /* allocate a lun sw entry for this device */ 1394 siop_add_dev(sc, xm->xm_target, lun); 1395 } 1396 } 1397 1398 splx(s); 1399 } 1400 } 1401 } 1402 1403 static void 1404 siop_start(sc, siop_cmd) 1405 struct siop_softc *sc; 1406 struct siop_cmd *siop_cmd; 1407 { 1408 struct siop_lun *siop_lun; 1409 struct siop_xfer *siop_xfer; 1410 u_int32_t dsa; 1411 int timeout; 1412 int target, lun, slot; 1413 1414 /* 1415 * first make sure to read valid data 1416 */ 1417 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1418 1419 /* 1420 * The queue management here is a bit tricky: the script always looks 1421 * at the slot from first to last, so if we always use the first 1422 * free slot commands can stay at the tail of the queue ~forever. 1423 * The algorithm used here is to restart from the head when we know 1424 * that the queue is empty, and only add commands after the last one. 1425 * When we're at the end of the queue wait for the script to clear it. 1426 * The best thing to do here would be to implement a circular queue, 1427 * but using only 53c720 features this can be "interesting". 1428 * A mid-way solution could be to implement 2 queues and swap orders. 1429 */ 1430 slot = sc->sc_currschedslot; 1431 /* 1432 * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is 1433 * free. As this is the last used slot, all previous slots are free, 1434 * we can restart from 0. 1435 */ 1436 if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == 1437 0x80000000) { 1438 slot = sc->sc_currschedslot = 0; 1439 } else { 1440 slot++; 1441 } 1442 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1443 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1444 siop_lun = 1445 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1446 /* if non-tagged command active, panic: this shouldn't happen */ 1447 if (siop_lun->siop_tag[0].active != NULL) { 1448 panic("siop_start: tagged cmd while untagged running"); 1449 } 1450 #ifdef DIAGNOSTIC 1451 /* sanity check the tag if needed */ 1452 if (siop_cmd->cmd_c.flags & CMDFL_TAG) { 1453 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) 1454 panic("siop_start: tag not free"); 1455 if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { 1456 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1457 printf(": tag id %d\n", siop_cmd->cmd_c.tag); 1458 panic("siop_start: invalid tag id"); 1459 } 1460 } 1461 #endif 1462 /* 1463 * find a free scheduler slot and load it. 1464 */ 1465 for (; slot < SIOP_NSLOTS; slot++) { 1466 /* 1467 * If cmd if 0x80000000 the slot is free 1468 */ 1469 if (siop_script_read(sc, 1470 (Ent_script_sched_slot0 / 4) + slot * 2) == 1471 0x80000000) 1472 break; 1473 } 1474 if (slot == SIOP_NSLOTS) { 1475 /* 1476 * no more free slot, no need to continue. freeze the queue 1477 * and requeue this command. 1478 */ 1479 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1480 sc->sc_flags |= SCF_CHAN_NOSLOT; 1481 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1482 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1483 siop_scsicmd_end(siop_cmd); 1484 return; 1485 } 1486 #ifdef SIOP_DEBUG_SCHED 1487 printf("using slot %d for DSA 0x%lx\n", slot, 1488 (u_long)siop_cmd->cmd_c.dsa); 1489 #endif 1490 /* mark command as active */ 1491 if (siop_cmd->cmd_c.status == CMDST_READY) 1492 siop_cmd->cmd_c.status = CMDST_ACTIVE; 1493 else 1494 panic("siop_start: bad status"); 1495 siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; 1496 /* patch scripts with DSA addr */ 1497 dsa = siop_cmd->cmd_c.dsa; 1498 /* first reselect switch, if we have an entry */ 1499 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) 1500 siop_script_write(sc, 1501 siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, 1502 dsa + sizeof(struct siop_common_xfer) + 1503 Ent_ldsa_reload_dsa); 1504 /* CMD script: MOVE MEMORY addr */ 1505 siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; 1506 siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = 1507 htole32(sc->sc_c.sc_scriptaddr + Ent_script_sched_slot0 + slot * 8); 1508 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1509 /* scheduler slot: JUMP ldsa_select */ 1510 siop_script_write(sc, 1511 (Ent_script_sched_slot0 / 4) + slot * 2 + 1, 1512 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); 1513 /* handle timeout */ 1514 if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1515 /* start exire timer */ 1516 timeout = mstohz(siop_cmd->cmd_c.xs->timeout); 1517 if (timeout == 0) 1518 timeout = 1; 1519 callout_reset( &siop_cmd->cmd_c.xs->xs_callout, 1520 timeout, siop_timeout, siop_cmd); 1521 } 1522 /* 1523 * Change JUMP cmd so that this slot will be handled 1524 */ 1525 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1526 0x80080000); 1527 sc->sc_currschedslot = slot; 1528 1529 /* make sure SCRIPT processor will read valid data */ 1530 siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1531 /* Signal script it has some work to do */ 1532 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1533 SIOP_ISTAT, ISTAT_SIGP); 1534 /* and wait for IRQ */ 1535 return; 1536 } 1537 1538 void 1539 siop_timeout(v) 1540 void *v; 1541 { 1542 struct siop_cmd *siop_cmd = v; 1543 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1544 int s; 1545 1546 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1547 printf("command timeout, CDB: "); 1548 scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); 1549 printf("\n"); 1550 1551 s = splbio(); 1552 /* reset the scsi bus */ 1553 siop_resetbus(&sc->sc_c); 1554 1555 /* deactivate callout */ 1556 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1557 /* mark command as being timed out; siop_intr will handle it */ 1558 /* 1559 * mark command has being timed out and just return; 1560 * the bus reset will generate an interrupt, 1561 * it will be handled in siop_intr() 1562 */ 1563 siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1564 splx(s); 1565 return; 1566 1567 } 1568 1569 void 1570 siop_dump_script(sc) 1571 struct siop_softc *sc; 1572 { 1573 int i; 1574 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1575 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1576 le32toh(sc->sc_c.sc_script[i]), 1577 le32toh(sc->sc_c.sc_script[i+1])); 1578 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1579 0xc0000000) { 1580 i++; 1581 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); 1582 } 1583 printf("\n"); 1584 } 1585 } 1586 1587 void 1588 siop_morecbd(sc) 1589 struct siop_softc *sc; 1590 { 1591 int error, i, j, s; 1592 bus_dma_segment_t seg; 1593 int rseg; 1594 struct siop_cbd *newcbd; 1595 struct siop_xfer *xfer; 1596 bus_addr_t dsa; 1597 u_int32_t *scr; 1598 1599 /* allocate a new list head */ 1600 newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1601 if (newcbd == NULL) { 1602 printf("%s: can't allocate memory for command descriptors " 1603 "head\n", sc->sc_c.sc_dev.dv_xname); 1604 return; 1605 } 1606 1607 /* allocate cmd list */ 1608 newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, 1609 M_DEVBUF, M_NOWAIT|M_ZERO); 1610 if (newcbd->cmds == NULL) { 1611 printf("%s: can't allocate memory for command descriptors\n", 1612 sc->sc_c.sc_dev.dv_xname); 1613 goto bad3; 1614 } 1615 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1616 1, &rseg, BUS_DMA_NOWAIT); 1617 if (error) { 1618 printf("%s: unable to allocate cbd DMA memory, error = %d\n", 1619 sc->sc_c.sc_dev.dv_xname, error); 1620 goto bad2; 1621 } 1622 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1623 (caddr_t *)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1624 if (error) { 1625 printf("%s: unable to map cbd DMA memory, error = %d\n", 1626 sc->sc_c.sc_dev.dv_xname, error); 1627 goto bad2; 1628 } 1629 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1630 BUS_DMA_NOWAIT, &newcbd->xferdma); 1631 if (error) { 1632 printf("%s: unable to create cbd DMA map, error = %d\n", 1633 sc->sc_c.sc_dev.dv_xname, error); 1634 goto bad1; 1635 } 1636 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, newcbd->xfers, 1637 PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1638 if (error) { 1639 printf("%s: unable to load cbd DMA map, error = %d\n", 1640 sc->sc_c.sc_dev.dv_xname, error); 1641 goto bad0; 1642 } 1643 #ifdef DEBUG 1644 printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, 1645 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1646 #endif 1647 for (i = 0; i < SIOP_NCMDPB; i++) { 1648 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1649 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1650 &newcbd->cmds[i].cmd_c.dmamap_data); 1651 if (error) { 1652 printf("%s: unable to create data DMA map for cbd: " 1653 "error %d\n", 1654 sc->sc_c.sc_dev.dv_xname, error); 1655 goto bad0; 1656 } 1657 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1658 sizeof(struct scsipi_generic), 1, 1659 sizeof(struct scsipi_generic), 0, 1660 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1661 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1662 if (error) { 1663 printf("%s: unable to create cmd DMA map for cbd %d\n", 1664 sc->sc_c.sc_dev.dv_xname, error); 1665 goto bad0; 1666 } 1667 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1668 newcbd->cmds[i].siop_cbdp = newcbd; 1669 xfer = &newcbd->xfers[i]; 1670 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1671 memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); 1672 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1673 i * sizeof(struct siop_xfer); 1674 newcbd->cmds[i].cmd_c.dsa = dsa; 1675 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1676 xfer->siop_tables.t_msgout.count= htole32(1); 1677 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1678 xfer->siop_tables.t_msgin.count= htole32(1); 1679 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1680 offsetof(struct siop_common_xfer, msg_in)); 1681 xfer->siop_tables.t_extmsgin.count= htole32(2); 1682 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1683 offsetof(struct siop_common_xfer, msg_in) + 1); 1684 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1685 offsetof(struct siop_common_xfer, msg_in) + 3); 1686 xfer->siop_tables.t_status.count= htole32(1); 1687 xfer->siop_tables.t_status.addr = htole32(dsa + 1688 offsetof(struct siop_common_xfer, status)); 1689 /* The select/reselect script */ 1690 scr = &xfer->resel[0]; 1691 for (j = 0; j < sizeof(load_dsa) / sizeof(load_dsa[0]); j++) 1692 scr[j] = htole32(load_dsa[j]); 1693 /* 1694 * 0x78000000 is a 'move data8 to reg'. data8 is the second 1695 * octet, reg offset is the third. 1696 */ 1697 scr[Ent_rdsa0 / 4] = 1698 htole32(0x78100000 | ((dsa & 0x000000ff) << 8)); 1699 scr[Ent_rdsa1 / 4] = 1700 htole32(0x78110000 | ( dsa & 0x0000ff00 )); 1701 scr[Ent_rdsa2 / 4] = 1702 htole32(0x78120000 | ((dsa & 0x00ff0000) >> 8)); 1703 scr[Ent_rdsa3 / 4] = 1704 htole32(0x78130000 | ((dsa & 0xff000000) >> 16)); 1705 scr[E_ldsa_abs_reselected_Used[0]] = 1706 htole32(sc->sc_c.sc_scriptaddr + Ent_reselected); 1707 scr[E_ldsa_abs_reselect_Used[0]] = 1708 htole32(sc->sc_c.sc_scriptaddr + Ent_reselect); 1709 scr[E_ldsa_abs_selected_Used[0]] = 1710 htole32(sc->sc_c.sc_scriptaddr + Ent_selected); 1711 scr[E_ldsa_abs_data_Used[0]] = 1712 htole32(dsa + sizeof(struct siop_common_xfer) + 1713 Ent_ldsa_data); 1714 /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ 1715 scr[Ent_ldsa_data / 4] = htole32(0x80000000); 1716 s = splbio(); 1717 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1718 splx(s); 1719 #ifdef SIOP_DEBUG 1720 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1721 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1722 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1723 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1724 #endif 1725 } 1726 s = splbio(); 1727 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1728 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1729 splx(s); 1730 return; 1731 bad0: 1732 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1733 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1734 bad1: 1735 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1736 bad2: 1737 free(newcbd->cmds, M_DEVBUF); 1738 bad3: 1739 free(newcbd, M_DEVBUF); 1740 return; 1741 } 1742 1743 struct siop_lunsw * 1744 siop_get_lunsw(sc) 1745 struct siop_softc *sc; 1746 { 1747 struct siop_lunsw *lunsw; 1748 int i; 1749 1750 if (sc->script_free_lo + (sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1751 sc->script_free_hi) 1752 return NULL; 1753 lunsw = TAILQ_FIRST(&sc->lunsw_list); 1754 if (lunsw != NULL) { 1755 #ifdef SIOP_DEBUG 1756 printf("siop_get_lunsw got lunsw at offset %d\n", 1757 lunsw->lunsw_off); 1758 #endif 1759 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 1760 return lunsw; 1761 } 1762 lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); 1763 if (lunsw == NULL) 1764 return NULL; 1765 #ifdef SIOP_DEBUG 1766 printf("allocating lunsw at offset %d\n", sc->script_free_lo); 1767 #endif 1768 if (sc->sc_c.features & SF_CHIP_RAM) { 1769 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1770 sc->script_free_lo * 4, lun_switch, 1771 sizeof(lun_switch) / sizeof(lun_switch[0])); 1772 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1773 (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, 1774 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1775 } else { 1776 for (i = 0; i < sizeof(lun_switch) / sizeof(lun_switch[0]); 1777 i++) 1778 sc->sc_c.sc_script[sc->script_free_lo + i] = 1779 htole32(lun_switch[i]); 1780 sc->sc_c.sc_script[ 1781 sc->script_free_lo + E_abs_lunsw_return_Used[0]] = 1782 htole32(sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1783 } 1784 lunsw->lunsw_off = sc->script_free_lo; 1785 lunsw->lunsw_size = sizeof(lun_switch) / sizeof(lun_switch[0]); 1786 sc->script_free_lo += lunsw->lunsw_size; 1787 siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1788 return lunsw; 1789 } 1790 1791 void 1792 siop_add_reselsw(sc, target) 1793 struct siop_softc *sc; 1794 int target; 1795 { 1796 int i, j; 1797 struct siop_target *siop_target; 1798 struct siop_lun *siop_lun; 1799 1800 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1801 /* 1802 * add an entry to resel switch 1803 */ 1804 siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); 1805 for (i = 0; i < 15; i++) { 1806 siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; 1807 if ((siop_script_read(sc, siop_target->reseloff) & 0xff) 1808 == 0xff) { /* it's free */ 1809 #ifdef SIOP_DEBUG 1810 printf("siop: target %d slot %d offset %d\n", 1811 target, i, siop_target->reseloff); 1812 #endif 1813 /* JUMP abs_foo, IF target | 0x80; */ 1814 siop_script_write(sc, siop_target->reseloff, 1815 0x800c0080 | target); 1816 siop_script_write(sc, siop_target->reseloff + 1, 1817 sc->sc_c.sc_scriptaddr + 1818 siop_target->lunsw->lunsw_off * 4 + 1819 Ent_lun_switch_entry); 1820 break; 1821 } 1822 } 1823 if (i == 15) /* no free slot, shouldn't happen */ 1824 panic("siop: resel switch full"); 1825 1826 sc->sc_ntargets++; 1827 for (i = 0; i < 8; i++) { 1828 siop_lun = siop_target->siop_lun[i]; 1829 if (siop_lun == NULL) 1830 continue; 1831 if (siop_lun->reseloff > 0) { 1832 siop_lun->reseloff = 0; 1833 for (j = 0; j < SIOP_NTAG; j++) 1834 siop_lun->siop_tag[j].reseloff = 0; 1835 siop_add_dev(sc, target, i); 1836 } 1837 } 1838 siop_update_scntl3(sc, sc->sc_c.targets[target]); 1839 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1840 } 1841 1842 void 1843 siop_update_scntl3(sc, _siop_target) 1844 struct siop_softc *sc; 1845 struct siop_common_target *_siop_target; 1846 { 1847 struct siop_target *siop_target = (struct siop_target *)_siop_target; 1848 /* MOVE target->id >> 24 TO SCNTL3 */ 1849 siop_script_write(sc, 1850 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), 1851 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); 1852 /* MOVE target->id >> 8 TO SXFER */ 1853 siop_script_write(sc, 1854 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, 1855 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); 1856 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1857 } 1858 1859 void 1860 siop_add_dev(sc, target, lun) 1861 struct siop_softc *sc; 1862 int target; 1863 int lun; 1864 { 1865 struct siop_lunsw *lunsw; 1866 struct siop_target *siop_target = 1867 (struct siop_target *)sc->sc_c.targets[target]; 1868 struct siop_lun *siop_lun = siop_target->siop_lun[lun]; 1869 int i, ntargets; 1870 1871 if (siop_lun->reseloff > 0) 1872 return; 1873 lunsw = siop_target->lunsw; 1874 if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { 1875 /* 1876 * can't extend this slot. Probably not worth trying to deal 1877 * with this case 1878 */ 1879 #ifdef DEBUG 1880 printf("%s:%d:%d: can't allocate a lun sw slot\n", 1881 sc->sc_c.sc_dev.dv_xname, target, lun); 1882 #endif 1883 return; 1884 } 1885 /* count how many free targets we still have to probe */ 1886 ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; 1887 1888 /* 1889 * we need 8 bytes for the lun sw additional entry, and 1890 * eventually sizeof(tag_switch) for the tag switch entry. 1891 * Keep enough free space for the free targets that could be 1892 * probed later. 1893 */ 1894 if (sc->script_free_lo + 2 + 1895 (ntargets * sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1896 ((siop_target->target_c.flags & TARF_TAG) ? 1897 sc->script_free_hi - (sizeof(tag_switch) / sizeof(tag_switch[0])) : 1898 sc->script_free_hi)) { 1899 /* 1900 * not enough space, probably not worth dealing with it. 1901 * We can hold 13 tagged-queuing capable devices in the 4k RAM. 1902 */ 1903 #ifdef DEBUG 1904 printf("%s:%d:%d: not enough memory for a lun sw slot\n", 1905 sc->sc_c.sc_dev.dv_xname, target, lun); 1906 #endif 1907 return; 1908 } 1909 #ifdef SIOP_DEBUG 1910 printf("%s:%d:%d: allocate lun sw entry\n", 1911 sc->sc_c.sc_dev.dv_xname, target, lun); 1912 #endif 1913 /* INT int_resellun */ 1914 siop_script_write(sc, sc->script_free_lo, 0x98080000); 1915 siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); 1916 /* Now the slot entry: JUMP abs_foo, IF lun */ 1917 siop_script_write(sc, sc->script_free_lo - 2, 1918 0x800c0000 | lun); 1919 siop_script_write(sc, sc->script_free_lo - 1, 0); 1920 siop_lun->reseloff = sc->script_free_lo - 2; 1921 lunsw->lunsw_size += 2; 1922 sc->script_free_lo += 2; 1923 if (siop_target->target_c.flags & TARF_TAG) { 1924 /* we need a tag switch */ 1925 sc->script_free_hi -= 1926 sizeof(tag_switch) / sizeof(tag_switch[0]); 1927 if (sc->sc_c.features & SF_CHIP_RAM) { 1928 bus_space_write_region_4(sc->sc_c.sc_ramt, 1929 sc->sc_c.sc_ramh, 1930 sc->script_free_hi * 4, tag_switch, 1931 sizeof(tag_switch) / sizeof(tag_switch[0])); 1932 } else { 1933 for(i = 0; 1934 i < sizeof(tag_switch) / sizeof(tag_switch[0]); 1935 i++) { 1936 sc->sc_c.sc_script[sc->script_free_hi + i] = 1937 htole32(tag_switch[i]); 1938 } 1939 } 1940 siop_script_write(sc, 1941 siop_lun->reseloff + 1, 1942 sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + 1943 Ent_tag_switch_entry); 1944 1945 for (i = 0; i < SIOP_NTAG; i++) { 1946 siop_lun->siop_tag[i].reseloff = 1947 sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; 1948 } 1949 } else { 1950 /* non-tag case; just work with the lun switch */ 1951 siop_lun->siop_tag[0].reseloff = 1952 siop_target->siop_lun[lun]->reseloff; 1953 } 1954 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1955 } 1956 1957 void 1958 siop_del_dev(sc, target, lun) 1959 struct siop_softc *sc; 1960 int target; 1961 int lun; 1962 { 1963 int i; 1964 struct siop_target *siop_target; 1965 #ifdef SIOP_DEBUG 1966 printf("%s:%d:%d: free lun sw entry\n", 1967 sc->sc_c.sc_dev.dv_xname, target, lun); 1968 #endif 1969 if (sc->sc_c.targets[target] == NULL) 1970 return; 1971 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1972 free(siop_target->siop_lun[lun], M_DEVBUF); 1973 siop_target->siop_lun[lun] = NULL; 1974 /* XXX compact sw entry too ? */ 1975 /* check if we can free the whole target */ 1976 for (i = 0; i < 8; i++) { 1977 if (siop_target->siop_lun[i] != NULL) 1978 return; 1979 } 1980 #ifdef SIOP_DEBUG 1981 printf("%s: free siop_target for target %d lun %d lunsw offset %d\n", 1982 sc->sc_c.sc_dev.dv_xname, target, lun, 1983 sc->sc_c.targets[target]->lunsw->lunsw_off); 1984 #endif 1985 /* 1986 * nothing here, free the target struct and resel 1987 * switch entry 1988 */ 1989 siop_script_write(sc, siop_target->reseloff, 0x800c00ff); 1990 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1991 TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); 1992 free(sc->sc_c.targets[target], M_DEVBUF); 1993 sc->sc_c.targets[target] = NULL; 1994 sc->sc_ntargets--; 1995 } 1996 1997 #ifdef SIOP_STATS 1998 void 1999 siop_printstats() 2000 { 2001 printf("siop_stat_intr %d\n", siop_stat_intr); 2002 printf("siop_stat_intr_shortxfer %d\n", siop_stat_intr_shortxfer); 2003 printf("siop_stat_intr_xferdisc %d\n", siop_stat_intr_xferdisc); 2004 printf("siop_stat_intr_sdp %d\n", siop_stat_intr_sdp); 2005 printf("siop_stat_intr_done %d\n", siop_stat_intr_done); 2006 printf("siop_stat_intr_lunresel %d\n", siop_stat_intr_lunresel); 2007 printf("siop_stat_intr_qfull %d\n", siop_stat_intr_qfull); 2008 } 2009 #endif 2010