1 /* $NetBSD: siop.c,v 1.105 2024/02/08 19:44:08 andvar 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: siop.c,v 1.105 2024/02/08 19:44:08 andvar Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/malloc.h> 37 #include <sys/buf.h> 38 #include <sys/kernel.h> 39 40 #include <machine/endian.h> 41 #include <sys/bus.h> 42 43 #include <dev/microcode/siop/siop.out> 44 45 #include <dev/scsipi/scsi_all.h> 46 #include <dev/scsipi/scsi_message.h> 47 #include <dev/scsipi/scsipi_all.h> 48 49 #include <dev/scsipi/scsiconf.h> 50 51 #include <dev/ic/siopreg.h> 52 #include <dev/ic/siopvar_common.h> 53 #include <dev/ic/siopvar.h> 54 55 #include "opt_siop.h" 56 57 /* 58 #define SIOP_DEBUG 59 #define SIOP_DEBUG_DR 60 #define SIOP_DEBUG_INTR 61 #define SIOP_DEBUG_SCHED 62 #define SIOP_DUMP_SCRIPT 63 */ 64 65 #define SIOP_STATS 66 67 #ifndef SIOP_DEFAULT_TARGET 68 #define SIOP_DEFAULT_TARGET 7 69 #endif 70 71 /* number of cmd descriptors per block */ 72 #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct siop_xfer)) 73 74 /* Number of scheduler slot (needs to match script) */ 75 #define SIOP_NSLOTS 40 76 77 void siop_reset(struct siop_softc *); 78 void siop_handle_reset(struct siop_softc *); 79 int siop_handle_qtag_reject(struct siop_cmd *); 80 void siop_scsicmd_end(struct siop_cmd *); 81 void siop_unqueue(struct siop_softc *, int, int); 82 static void siop_start(struct siop_softc *, struct siop_cmd *); 83 void siop_timeout(void *); 84 int siop_scsicmd(struct scsipi_xfer *); 85 void siop_scsipi_request(struct scsipi_channel *, 86 scsipi_adapter_req_t, void *); 87 void siop_dump_script(struct siop_softc *); 88 void siop_morecbd(struct siop_softc *); 89 struct siop_lunsw *siop_get_lunsw(struct siop_softc *); 90 void siop_add_reselsw(struct siop_softc *, int); 91 void siop_update_scntl3(struct siop_softc *, 92 struct siop_common_target *); 93 94 #ifdef SIOP_STATS 95 static int siop_stat_intr = 0; 96 static int siop_stat_intr_shortxfer = 0; 97 static int siop_stat_intr_sdp = 0; 98 static int siop_stat_intr_saveoffset = 0; 99 static int siop_stat_intr_done = 0; 100 static int siop_stat_intr_xferdisc = 0; 101 static int siop_stat_intr_lunresel = 0; 102 static int siop_stat_intr_qfull = 0; 103 void siop_printstats(void); 104 #define INCSTAT(x) x++ 105 #else 106 #define INCSTAT(x) 107 #endif 108 109 static inline void siop_script_sync(struct siop_softc *, int); 110 static inline void 111 siop_script_sync(struct siop_softc *sc, int ops) 112 { 113 114 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) 115 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 116 PAGE_SIZE, ops); 117 } 118 119 static inline uint32_t siop_script_read(struct siop_softc *, u_int); 120 static inline uint32_t 121 siop_script_read(struct siop_softc *sc, u_int offset) 122 { 123 124 if (sc->sc_c.features & SF_CHIP_RAM) { 125 return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 126 offset * 4); 127 } else { 128 return siop_ctoh32(&sc->sc_c, sc->sc_c.sc_script[offset]); 129 } 130 } 131 132 static inline void siop_script_write(struct siop_softc *, u_int, 133 uint32_t); 134 static inline void 135 siop_script_write(struct siop_softc *sc, u_int offset, uint32_t val) 136 { 137 138 if (sc->sc_c.features & SF_CHIP_RAM) { 139 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 140 offset * 4, val); 141 } else { 142 sc->sc_c.sc_script[offset] = siop_htoc32(&sc->sc_c, val); 143 } 144 } 145 146 void 147 siop_attach(struct siop_softc *sc) 148 { 149 150 if (siop_common_attach(&sc->sc_c) != 0) 151 return; 152 153 TAILQ_INIT(&sc->free_list); 154 TAILQ_INIT(&sc->cmds); 155 TAILQ_INIT(&sc->lunsw_list); 156 sc->sc_currschedslot = 0; 157 #ifdef SIOP_DEBUG 158 printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n", 159 device_xname(sc->sc_c.sc_dev), (int)sizeof(siop_script), 160 (uint32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); 161 #endif 162 163 sc->sc_c.sc_adapt.adapt_max_periph = SIOP_NTAG - 1; 164 sc->sc_c.sc_adapt.adapt_request = siop_scsipi_request; 165 166 /* Do a bus reset, so that devices fall back to narrow/async */ 167 siop_resetbus(&sc->sc_c); 168 /* 169 * siop_reset() will reset the chip, thus clearing pending interrupts 170 */ 171 siop_reset(sc); 172 #ifdef SIOP_DUMP_SCRIPT 173 siop_dump_script(sc); 174 #endif 175 176 config_found(sc->sc_c.sc_dev, &sc->sc_c.sc_chan, scsiprint, CFARGS_NONE); 177 } 178 179 void 180 siop_reset(struct siop_softc *sc) 181 { 182 int i, j; 183 struct siop_lunsw *lunsw; 184 185 siop_common_reset(&sc->sc_c); 186 187 /* copy and patch the script */ 188 if (sc->sc_c.features & SF_CHIP_RAM) { 189 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, 190 siop_script, __arraycount(siop_script)); 191 for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { 192 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 193 E_abs_msgin_Used[j] * 4, 194 sc->sc_c.sc_scriptaddr + Ent_msgin_space); 195 } 196 if (sc->sc_c.features & SF_CHIP_LED0) { 197 bus_space_write_region_4(sc->sc_c.sc_ramt, 198 sc->sc_c.sc_ramh, 199 Ent_led_on1, siop_led_on, 200 __arraycount(siop_led_on)); 201 bus_space_write_region_4(sc->sc_c.sc_ramt, 202 sc->sc_c.sc_ramh, 203 Ent_led_on2, siop_led_on, 204 __arraycount(siop_led_on)); 205 bus_space_write_region_4(sc->sc_c.sc_ramt, 206 sc->sc_c.sc_ramh, 207 Ent_led_off, siop_led_off, 208 __arraycount(siop_led_off)); 209 } 210 } else { 211 for (j = 0; j < __arraycount(siop_script); j++) { 212 sc->sc_c.sc_script[j] = 213 siop_htoc32(&sc->sc_c, siop_script[j]); 214 } 215 for (j = 0; j < __arraycount(E_abs_msgin_Used); j++) { 216 sc->sc_c.sc_script[E_abs_msgin_Used[j]] = 217 siop_htoc32(&sc->sc_c, 218 sc->sc_c.sc_scriptaddr + Ent_msgin_space); 219 } 220 if (sc->sc_c.features & SF_CHIP_LED0) { 221 for (j = 0; j < __arraycount(siop_led_on); j++) 222 sc->sc_c.sc_script[ 223 Ent_led_on1 / sizeof(siop_led_on[0]) + j 224 ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); 225 for (j = 0; j < __arraycount(siop_led_on); j++) 226 sc->sc_c.sc_script[ 227 Ent_led_on2 / sizeof(siop_led_on[0]) + j 228 ] = siop_htoc32(&sc->sc_c, siop_led_on[j]); 229 for (j = 0; j < __arraycount(siop_led_off); j++) 230 sc->sc_c.sc_script[ 231 Ent_led_off / sizeof(siop_led_off[0]) + j 232 ] = siop_htoc32(&sc->sc_c, siop_led_off[j]); 233 } 234 } 235 sc->script_free_lo = __arraycount(siop_script); 236 sc->script_free_hi = sc->sc_c.ram_size / 4; 237 sc->sc_ntargets = 0; 238 239 /* free used and unused lun switches */ 240 while((lunsw = TAILQ_FIRST(&sc->lunsw_list)) != NULL) { 241 #ifdef SIOP_DEBUG 242 printf("%s: free lunsw at offset %d\n", 243 device_xname(sc->sc_c.sc_dev), lunsw->lunsw_off); 244 #endif 245 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 246 free(lunsw, M_DEVBUF); 247 } 248 TAILQ_INIT(&sc->lunsw_list); 249 /* restore reselect switch */ 250 for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { 251 struct siop_target *target; 252 if (sc->sc_c.targets[i] == NULL) 253 continue; 254 #ifdef SIOP_DEBUG 255 printf("%s: restore sw for target %d\n", 256 device_xname(sc->sc_c.sc_dev), i); 257 #endif 258 target = (struct siop_target *)sc->sc_c.targets[i]; 259 free(target->lunsw, M_DEVBUF); 260 target->lunsw = siop_get_lunsw(sc); 261 if (target->lunsw == NULL) { 262 aprint_error_dev(sc->sc_c.sc_dev, 263 "can't alloc lunsw for target %d\n", i); 264 break; 265 } 266 siop_add_reselsw(sc, i); 267 } 268 269 /* start script */ 270 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { 271 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 272 PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 273 } 274 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, 275 sc->sc_c.sc_scriptaddr + Ent_reselect); 276 } 277 278 #if 0 279 #define CALL_SCRIPT(ent) do { \ 280 printf ("start script DSA 0x%lx DSP 0x%lx\n", \ 281 siop_cmd->cmd_c.dsa, \ 282 sc->sc_c.sc_scriptaddr + ent); \ 283 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ 284 SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 285 } while (/* CONSTCOND */0) 286 #else 287 #define CALL_SCRIPT(ent) do { \ 288 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ 289 SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 290 } while (/* CONSTCOND */0) 291 #endif 292 293 int 294 siop_intr(void *v) 295 { 296 struct siop_softc *sc = v; 297 struct siop_target *siop_target; 298 struct siop_cmd *siop_cmd; 299 struct siop_lun *siop_lun; 300 struct scsipi_xfer *xs; 301 int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ 302 uint32_t irqcode; 303 int need_reset = 0; 304 int offset, target, lun, tag; 305 bus_addr_t dsa; 306 struct siop_cbd *cbdp; 307 int freetarget = 0; 308 int restart = 0; 309 310 istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); 311 if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) 312 return 0; 313 INCSTAT(siop_stat_intr); 314 if (istat & ISTAT_INTF) { 315 printf("INTRF\n"); 316 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 317 SIOP_ISTAT, ISTAT_INTF); 318 } 319 if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == 320 (ISTAT_DIP | ISTAT_ABRT)) { 321 /* clear abort */ 322 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 323 SIOP_ISTAT, 0); 324 } 325 /* use DSA to find the current siop_cmd */ 326 siop_cmd = NULL; 327 dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); 328 TAILQ_FOREACH(cbdp, &sc->cmds, next) { 329 if (dsa >= cbdp->xferdma->dm_segs[0].ds_addr && 330 dsa < cbdp->xferdma->dm_segs[0].ds_addr + PAGE_SIZE) { 331 dsa -= cbdp->xferdma->dm_segs[0].ds_addr; 332 siop_cmd = &cbdp->cmds[dsa / sizeof(struct siop_xfer)]; 333 siop_table_sync(siop_cmd, 334 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 335 break; 336 } 337 } 338 if (siop_cmd) { 339 xs = siop_cmd->cmd_c.xs; 340 siop_target = (struct siop_target *)siop_cmd->cmd_c.siop_target; 341 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 342 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 343 tag = siop_cmd->cmd_c.tag; 344 siop_lun = siop_target->siop_lun[lun]; 345 #ifdef DIAGNOSTIC 346 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 347 printf("siop_cmd (lun %d) for DSA 0x%x " 348 "not active (%d)\n", lun, (u_int)dsa, 349 siop_cmd->cmd_c.status); 350 xs = NULL; 351 siop_target = NULL; 352 target = -1; 353 lun = -1; 354 tag = -1; 355 siop_lun = NULL; 356 siop_cmd = NULL; 357 } else if (siop_lun->siop_tag[tag].active != siop_cmd) { 358 printf("siop_cmd (lun %d tag %d) not in siop_lun " 359 "active (%p != %p)\n", lun, tag, siop_cmd, 360 siop_lun->siop_tag[tag].active); 361 } 362 #endif 363 } else { 364 xs = NULL; 365 siop_target = NULL; 366 target = -1; 367 lun = -1; 368 tag = -1; 369 siop_lun = NULL; 370 } 371 if (istat & ISTAT_DIP) { 372 dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 373 SIOP_DSTAT); 374 if (dstat & DSTAT_ABRT) { 375 /* was probably generated by a bus reset IOCTL */ 376 if ((dstat & DSTAT_DFE) == 0) 377 siop_clearfifo(&sc->sc_c); 378 goto reset; 379 } 380 if (dstat & DSTAT_SSI) { 381 printf("single step dsp 0x%08x dsa 0x08%x\n", 382 (int)(bus_space_read_4(sc->sc_c.sc_rt, 383 sc->sc_c.sc_rh, SIOP_DSP) - 384 sc->sc_c.sc_scriptaddr), 385 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 386 SIOP_DSA)); 387 if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && 388 (istat & ISTAT_SIP) == 0) { 389 bus_space_write_1(sc->sc_c.sc_rt, 390 sc->sc_c.sc_rh, SIOP_DCNTL, 391 bus_space_read_1(sc->sc_c.sc_rt, 392 sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); 393 } 394 return 1; 395 } 396 397 if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { 398 printf("DMA IRQ:"); 399 if (dstat & DSTAT_IID) 400 printf(" Illegal instruction"); 401 if (dstat & DSTAT_BF) 402 printf(" bus fault"); 403 if (dstat & DSTAT_MDPE) 404 printf(" parity"); 405 if (dstat & DSTAT_DFE) 406 printf(" DMA fifo empty"); 407 else 408 siop_clearfifo(&sc->sc_c); 409 printf(", DSP=0x%x DSA=0x%x: ", 410 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 411 SIOP_DSP) - sc->sc_c.sc_scriptaddr), 412 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 413 if (siop_cmd) 414 printf("last msg_in=0x%x status=0x%x\n", 415 siop_cmd->cmd_tables->msg_in[0], 416 siop_ctoh32(&sc->sc_c, 417 siop_cmd->cmd_tables->status)); 418 else 419 aprint_error_dev(sc->sc_c.sc_dev, 420 "current DSA invalid\n"); 421 need_reset = 1; 422 } 423 } 424 if (istat & ISTAT_SIP) { 425 if (istat & ISTAT_DIP) 426 delay(10); 427 /* 428 * Can't read sist0 & sist1 independently, or we have to 429 * insert delay 430 */ 431 sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 432 SIOP_SIST0); 433 sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 434 SIOP_SSTAT1); 435 #ifdef SIOP_DEBUG_INTR 436 printf("scsi interrupt, sist=0x%x sstat1=0x%x " 437 "DSA=0x%x DSP=0x%lx\n", sist, 438 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 439 SIOP_SSTAT1), 440 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 441 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 442 SIOP_DSP) - 443 sc->sc_c.sc_scriptaddr)); 444 #endif 445 if (sist & SIST0_RST) { 446 siop_handle_reset(sc); 447 /* no table to flush here */ 448 return 1; 449 } 450 if (sist & SIST0_SGE) { 451 if (siop_cmd) 452 scsipi_printaddr(xs->xs_periph); 453 else 454 printf("%s:", device_xname(sc->sc_c.sc_dev)); 455 printf("scsi gross error\n"); 456 goto reset; 457 } 458 if ((sist & SIST0_MA) && need_reset == 0) { 459 if (siop_cmd) { 460 int scratcha0; 461 dstat = bus_space_read_1(sc->sc_c.sc_rt, 462 sc->sc_c.sc_rh, SIOP_DSTAT); 463 /* 464 * first restore DSA, in case we were in a S/G 465 * operation. 466 */ 467 bus_space_write_4(sc->sc_c.sc_rt, 468 sc->sc_c.sc_rh, 469 SIOP_DSA, siop_cmd->cmd_c.dsa); 470 scratcha0 = bus_space_read_1(sc->sc_c.sc_rt, 471 sc->sc_c.sc_rh, SIOP_SCRATCHA); 472 switch (sstat1 & SSTAT1_PHASE_MASK) { 473 case SSTAT1_PHASE_STATUS: 474 /* 475 * previous phase may be aborted for any reason 476 * ( for example, the target has less data to 477 * transfer than requested). Compute resid and 478 * just go to status, the command should 479 * terminate. 480 */ 481 INCSTAT(siop_stat_intr_shortxfer); 482 if (scratcha0 & A_flag_data) 483 siop_ma(&siop_cmd->cmd_c); 484 else if ((dstat & DSTAT_DFE) == 0) 485 siop_clearfifo(&sc->sc_c); 486 CALL_SCRIPT(Ent_status); 487 return 1; 488 case SSTAT1_PHASE_MSGIN: 489 /* 490 * target may be ready to disconnect 491 * Compute resid which would be used later 492 * if a save data pointer is needed. 493 */ 494 INCSTAT(siop_stat_intr_xferdisc); 495 if (scratcha0 & A_flag_data) 496 siop_ma(&siop_cmd->cmd_c); 497 else if ((dstat & DSTAT_DFE) == 0) 498 siop_clearfifo(&sc->sc_c); 499 bus_space_write_1(sc->sc_c.sc_rt, 500 sc->sc_c.sc_rh, SIOP_SCRATCHA, 501 scratcha0 & ~A_flag_data); 502 CALL_SCRIPT(Ent_msgin); 503 return 1; 504 } 505 aprint_error_dev(sc->sc_c.sc_dev, 506 "unexpected phase mismatch %d\n", 507 sstat1 & SSTAT1_PHASE_MASK); 508 } else { 509 aprint_error_dev(sc->sc_c.sc_dev, 510 "phase mismatch without command\n"); 511 } 512 need_reset = 1; 513 } 514 if (sist & SIST0_PAR) { 515 /* parity error, reset */ 516 if (siop_cmd) 517 scsipi_printaddr(xs->xs_periph); 518 else 519 printf("%s:", device_xname(sc->sc_c.sc_dev)); 520 printf("parity error\n"); 521 goto reset; 522 } 523 if ((sist & (SIST1_STO << 8)) && need_reset == 0) { 524 /* selection time out, assume there's no device here */ 525 if (siop_cmd) { 526 siop_cmd->cmd_c.status = CMDST_DONE; 527 xs->error = XS_SELTIMEOUT; 528 freetarget = 1; 529 goto end; 530 } else { 531 aprint_error_dev(sc->sc_c.sc_dev, 532 "selection timeout without " 533 "command\n"); 534 need_reset = 1; 535 } 536 } 537 if (sist & SIST0_UDC) { 538 /* 539 * unexpected disconnect. Usually the target signals 540 * a fatal condition this way. Attempt to get sense. 541 */ 542 if (siop_cmd) { 543 siop_cmd->cmd_tables->status = 544 siop_htoc32(&sc->sc_c, SCSI_CHECK); 545 goto end; 546 } 547 aprint_error_dev(sc->sc_c.sc_dev, 548 "unexpected disconnect without " 549 "command\n"); 550 goto reset; 551 } 552 if (sist & (SIST1_SBMC << 8)) { 553 /* SCSI bus mode change */ 554 if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) 555 goto reset; 556 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { 557 /* 558 * we have a script interrupt, it will 559 * restart the script. 560 */ 561 goto scintr; 562 } 563 /* 564 * else we have to restart it ourselves, at the 565 * interrupted instruction. 566 */ 567 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 568 SIOP_DSP, 569 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 570 SIOP_DSP) - 8); 571 return 1; 572 } 573 /* Else it's an unhandled exception (for now). */ 574 aprint_error_dev(sc->sc_c.sc_dev, 575 "unhandled scsi interrupt, sist=0x%x sstat1=0x%x " 576 "DSA=0x%x DSP=0x%x\n", sist, 577 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 578 SIOP_SSTAT1), 579 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 580 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 581 SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 582 if (siop_cmd) { 583 siop_cmd->cmd_c.status = CMDST_DONE; 584 xs->error = XS_SELTIMEOUT; 585 goto end; 586 } 587 need_reset = 1; 588 } 589 if (need_reset) { 590 reset: 591 /* fatal error, reset the bus */ 592 siop_resetbus(&sc->sc_c); 593 /* no table to flush here */ 594 return 1; 595 } 596 597 scintr: 598 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ 599 irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 600 SIOP_DSPS); 601 #ifdef SIOP_DEBUG_INTR 602 printf("script interrupt 0x%x\n", irqcode); 603 #endif 604 /* 605 * no command, or an inactive command is only valid for a 606 * reselect interrupt 607 */ 608 if ((irqcode & 0x80) == 0) { 609 if (siop_cmd == NULL) { 610 aprint_error_dev(sc->sc_c.sc_dev, 611 "script interrupt (0x%x) with " 612 "invalid DSA !!!\n", 613 irqcode); 614 goto reset; 615 } 616 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 617 aprint_error_dev(sc->sc_c.sc_dev, 618 "command with invalid status " 619 "(IRQ code 0x%x current status %d) !\n", 620 irqcode, siop_cmd->cmd_c.status); 621 xs = NULL; 622 } 623 } 624 switch(irqcode) { 625 case A_int_err: 626 printf("error, DSP=0x%x\n", 627 (int)(bus_space_read_4(sc->sc_c.sc_rt, 628 sc->sc_c.sc_rh, SIOP_DSP) - 629 sc->sc_c.sc_scriptaddr)); 630 if (xs) { 631 xs->error = XS_SELTIMEOUT; 632 goto end; 633 } else { 634 goto reset; 635 } 636 case A_int_reseltarg: 637 aprint_error_dev(sc->sc_c.sc_dev, 638 "reselect with invalid target\n"); 639 goto reset; 640 case A_int_resellun: 641 INCSTAT(siop_stat_intr_lunresel); 642 target = bus_space_read_1(sc->sc_c.sc_rt, 643 sc->sc_c.sc_rh, SIOP_SCRATCHA) & 0xf; 644 lun = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 645 SIOP_SCRATCHA + 1); 646 tag = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 647 SIOP_SCRATCHA + 2); 648 siop_target = 649 (struct siop_target *)sc->sc_c.targets[target]; 650 if (siop_target == NULL) { 651 printf("%s: reselect with invalid target %d\n", 652 device_xname(sc->sc_c.sc_dev), target); 653 goto reset; 654 } 655 siop_lun = siop_target->siop_lun[lun]; 656 if (siop_lun == NULL) { 657 printf("%s: target %d reselect with invalid " 658 "lun %d\n", device_xname(sc->sc_c.sc_dev), 659 target, lun); 660 goto reset; 661 } 662 if (siop_lun->siop_tag[tag].active == NULL) { 663 printf("%s: target %d lun %d tag %d reselect " 664 "without command\n", 665 device_xname(sc->sc_c.sc_dev), 666 target, lun, tag); 667 goto reset; 668 } 669 siop_cmd = siop_lun->siop_tag[tag].active; 670 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 671 SIOP_DSP, siop_cmd->cmd_c.dsa + 672 sizeof(struct siop_common_xfer) + 673 Ent_ldsa_reload_dsa); 674 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 675 return 1; 676 case A_int_reseltag: 677 printf("%s: reselect with invalid tag\n", 678 device_xname(sc->sc_c.sc_dev)); 679 goto reset; 680 case A_int_msgin: 681 { 682 int msgin = bus_space_read_1(sc->sc_c.sc_rt, 683 sc->sc_c.sc_rh, SIOP_SFBR); 684 685 if (msgin == MSG_MESSAGE_REJECT) { 686 int msg, extmsg; 687 if (siop_cmd->cmd_tables->msg_out[0] & 0x80) { 688 /* 689 * message was part of a identify + 690 * something else. Identify shouldn't 691 * have been rejected. 692 */ 693 msg = 694 siop_cmd->cmd_tables->msg_out[1]; 695 extmsg = 696 siop_cmd->cmd_tables->msg_out[3]; 697 } else { 698 msg = siop_cmd->cmd_tables->msg_out[0]; 699 extmsg = 700 siop_cmd->cmd_tables->msg_out[2]; 701 } 702 if (msg == MSG_MESSAGE_REJECT) { 703 /* MSG_REJECT for a MSG_REJECT !*/ 704 if (xs) 705 scsipi_printaddr(xs->xs_periph); 706 else 707 printf("%s: ", device_xname( 708 sc->sc_c.sc_dev)); 709 printf("our reject message was " 710 "rejected\n"); 711 goto reset; 712 } 713 if (msg == MSG_EXTENDED && 714 extmsg == MSG_EXT_WDTR) { 715 /* WDTR rejected, initiate sync */ 716 if ((siop_target->target_c.flags & 717 TARF_SYNC) == 0) { 718 siop_target->target_c.status = 719 TARST_OK; 720 siop_update_xfer_mode(&sc->sc_c, 721 target); 722 /* no table to flush here */ 723 CALL_SCRIPT(Ent_msgin_ack); 724 return 1; 725 } 726 siop_target->target_c.status = 727 TARST_SYNC_NEG; 728 siop_sdtr_msg(&siop_cmd->cmd_c, 0, 729 sc->sc_c.st_minsync, 730 sc->sc_c.maxoff); 731 siop_table_sync(siop_cmd, 732 BUS_DMASYNC_PREREAD | 733 BUS_DMASYNC_PREWRITE); 734 CALL_SCRIPT(Ent_send_msgout); 735 return 1; 736 } else if (msg == MSG_EXTENDED && 737 extmsg == MSG_EXT_SDTR) { 738 /* sync rejected */ 739 siop_target->target_c.offset = 0; 740 siop_target->target_c.period = 0; 741 siop_target->target_c.status = TARST_OK; 742 siop_update_xfer_mode(&sc->sc_c, 743 target); 744 /* no table to flush here */ 745 CALL_SCRIPT(Ent_msgin_ack); 746 return 1; 747 } else if (msg == MSG_SIMPLE_Q_TAG || 748 msg == MSG_HEAD_OF_Q_TAG || 749 msg == MSG_ORDERED_Q_TAG) { 750 if (siop_handle_qtag_reject( 751 siop_cmd) == -1) 752 goto reset; 753 CALL_SCRIPT(Ent_msgin_ack); 754 return 1; 755 } 756 if (xs) 757 scsipi_printaddr(xs->xs_periph); 758 else 759 printf("%s: ", 760 device_xname(sc->sc_c.sc_dev)); 761 if (msg == MSG_EXTENDED) { 762 printf("scsi message reject, extended " 763 "message sent was 0x%x\n", extmsg); 764 } else { 765 printf("scsi message reject, message " 766 "sent was 0x%x\n", msg); 767 } 768 /* no table to flush here */ 769 CALL_SCRIPT(Ent_msgin_ack); 770 return 1; 771 } 772 if (msgin == MSG_IGN_WIDE_RESIDUE) { 773 /* use the extmsgdata table to get the second byte */ 774 siop_cmd->cmd_tables->t_extmsgdata.count = 775 siop_htoc32(&sc->sc_c, 1); 776 siop_table_sync(siop_cmd, 777 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 778 CALL_SCRIPT(Ent_get_extmsgdata); 779 return 1; 780 } 781 if (xs) 782 scsipi_printaddr(xs->xs_periph); 783 else 784 printf("%s: ", device_xname(sc->sc_c.sc_dev)); 785 printf("unhandled message 0x%x\n", 786 siop_cmd->cmd_tables->msg_in[0]); 787 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 788 siop_cmd->cmd_tables->t_msgout.count = 789 siop_htoc32(&sc->sc_c, 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 aprint_error_dev(sc->sc_c.sc_dev, 804 "extended message too big (%d)\n", 805 siop_cmd->cmd_tables->msg_in[1]); 806 siop_cmd->cmd_tables->t_extmsgdata.count = 807 siop_htoc32(&sc->sc_c, 808 siop_cmd->cmd_tables->msg_in[1] - 1); 809 siop_table_sync(siop_cmd, 810 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 811 CALL_SCRIPT(Ent_get_extmsgdata); 812 return 1; 813 case A_int_extmsgdata: 814 #ifdef SIOP_DEBUG_INTR 815 { 816 int i; 817 printf("extended message: 0x%x, data:", 818 siop_cmd->cmd_tables->msg_in[2]); 819 for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; 820 i++) 821 printf(" 0x%x", 822 siop_cmd->cmd_tables->msg_in[i]); 823 printf("\n"); 824 } 825 #endif 826 if (siop_cmd->cmd_tables->msg_in[0] == 827 MSG_IGN_WIDE_RESIDUE) { 828 /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ 829 if (siop_cmd->cmd_tables->msg_in[3] != 1) 830 printf("MSG_IGN_WIDE_RESIDUE: " 831 "bad len %d\n", 832 siop_cmd->cmd_tables->msg_in[3]); 833 switch (siop_iwr(&siop_cmd->cmd_c)) { 834 case SIOP_NEG_MSGOUT: 835 siop_table_sync(siop_cmd, 836 BUS_DMASYNC_PREREAD | 837 BUS_DMASYNC_PREWRITE); 838 CALL_SCRIPT(Ent_send_msgout); 839 return(1); 840 case SIOP_NEG_ACK: 841 CALL_SCRIPT(Ent_msgin_ack); 842 return(1); 843 default: 844 panic("invalid retval from " 845 "siop_iwr()"); 846 } 847 return(1); 848 } 849 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 850 switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { 851 case SIOP_NEG_MSGOUT: 852 siop_update_scntl3(sc, 853 siop_cmd->cmd_c.siop_target); 854 siop_table_sync(siop_cmd, 855 BUS_DMASYNC_PREREAD | 856 BUS_DMASYNC_PREWRITE); 857 CALL_SCRIPT(Ent_send_msgout); 858 return(1); 859 case SIOP_NEG_ACK: 860 siop_update_scntl3(sc, 861 siop_cmd->cmd_c.siop_target); 862 CALL_SCRIPT(Ent_msgin_ack); 863 return(1); 864 default: 865 panic("invalid retval from " 866 "siop_wdtr_neg()"); 867 } 868 return(1); 869 } 870 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 871 switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { 872 case SIOP_NEG_MSGOUT: 873 siop_update_scntl3(sc, 874 siop_cmd->cmd_c.siop_target); 875 siop_table_sync(siop_cmd, 876 BUS_DMASYNC_PREREAD | 877 BUS_DMASYNC_PREWRITE); 878 CALL_SCRIPT(Ent_send_msgout); 879 return(1); 880 case SIOP_NEG_ACK: 881 siop_update_scntl3(sc, 882 siop_cmd->cmd_c.siop_target); 883 CALL_SCRIPT(Ent_msgin_ack); 884 return(1); 885 default: 886 panic("invalid retval from " 887 "siop_sdtr_neg()"); 888 } 889 return(1); 890 } 891 /* send a message reject */ 892 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 893 siop_cmd->cmd_tables->t_msgout.count = 894 siop_htoc32(&sc->sc_c, 1); 895 siop_table_sync(siop_cmd, 896 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 897 CALL_SCRIPT(Ent_send_msgout); 898 return 1; 899 case A_int_disc: 900 INCSTAT(siop_stat_intr_sdp); 901 offset = bus_space_read_1(sc->sc_c.sc_rt, 902 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 903 #ifdef SIOP_DEBUG_DR 904 printf("disconnect offset %d\n", offset); 905 #endif 906 siop_sdp(&siop_cmd->cmd_c, offset); 907 /* we start again with no offset */ 908 siop_cmd->saved_offset = SIOP_NOOFFSET; 909 siop_table_sync(siop_cmd, 910 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 911 CALL_SCRIPT(Ent_script_sched); 912 return 1; 913 case A_int_saveoffset: 914 INCSTAT(siop_stat_intr_saveoffset); 915 offset = bus_space_read_1(sc->sc_c.sc_rt, 916 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 917 #ifdef SIOP_DEBUG_DR 918 printf("saveoffset offset %d\n", offset); 919 #endif 920 siop_cmd->saved_offset = offset; 921 CALL_SCRIPT(Ent_script_sched); 922 return 1; 923 case A_int_resfail: 924 printf("reselect failed\n"); 925 CALL_SCRIPT(Ent_script_sched); 926 return 1; 927 case A_int_done: 928 if (xs == NULL) { 929 printf("%s: done without command, DSA=0x%lx\n", 930 device_xname(sc->sc_c.sc_dev), 931 (u_long)siop_cmd->cmd_c.dsa); 932 siop_cmd->cmd_c.status = CMDST_FREE; 933 CALL_SCRIPT(Ent_script_sched); 934 return 1; 935 } 936 #ifdef SIOP_DEBUG_INTR 937 printf("done, DSA=0x%lx target id 0x%x last msg " 938 "in=0x%x status=0x%x\n", 939 (u_long)siop_cmd->cmd_c.dsa, 940 siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->id), 941 siop_cmd->cmd_tables->msg_in[0], 942 siop_ctoh32(&sc->sc_c, 943 siop_cmd->cmd_tables->status)); 944 #endif 945 INCSTAT(siop_stat_intr_done); 946 /* update resid. */ 947 offset = bus_space_read_1(sc->sc_c.sc_rt, 948 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 949 /* 950 * if we got a disconnect between the last data phase 951 * and the status phase, offset will be 0. In this 952 * case, siop_cmd->saved_offset will have the proper 953 * value if it got updated by the controller 954 */ 955 if (offset == 0 && 956 siop_cmd->saved_offset != SIOP_NOOFFSET) 957 offset = siop_cmd->saved_offset; 958 siop_update_resid(&siop_cmd->cmd_c, offset); 959 siop_cmd->cmd_c.status = CMDST_DONE; 960 goto end; 961 default: 962 printf("unknown irqcode %x\n", irqcode); 963 if (xs) { 964 xs->error = XS_SELTIMEOUT; 965 goto end; 966 } 967 goto reset; 968 } 969 return 1; 970 } 971 /* 972 * We just shouldn't get there, but on some KVM virtual hosts, 973 * we do - see PR 48277. 974 */ 975 printf("siop_intr: I shouldn't be there !\n"); 976 return 1; 977 978 end: 979 /* 980 * restart the script now if command completed properly 981 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 982 * queue 983 */ 984 xs->status = siop_ctoh32(&sc->sc_c, siop_cmd->cmd_tables->status); 985 if (xs->status == SCSI_OK) 986 CALL_SCRIPT(Ent_script_sched); 987 else 988 restart = 1; 989 siop_lun->siop_tag[tag].active = NULL; 990 siop_scsicmd_end(siop_cmd); 991 if (freetarget && siop_target->target_c.status == TARST_PROBING) 992 siop_del_dev(sc, target, lun); 993 if (restart) 994 CALL_SCRIPT(Ent_script_sched); 995 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 996 /* a command terminated, so we have free slots now */ 997 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 998 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 999 } 1000 1001 return 1; 1002 } 1003 1004 void 1005 siop_scsicmd_end(struct siop_cmd *siop_cmd) 1006 { 1007 struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; 1008 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1009 1010 switch(xs->status) { 1011 case SCSI_OK: 1012 xs->error = XS_NOERROR; 1013 break; 1014 case SCSI_BUSY: 1015 xs->error = XS_BUSY; 1016 break; 1017 case SCSI_CHECK: 1018 xs->error = XS_BUSY; 1019 /* remove commands in the queue and scheduler */ 1020 siop_unqueue(sc, xs->xs_periph->periph_target, 1021 xs->xs_periph->periph_lun); 1022 break; 1023 case SCSI_QUEUE_FULL: 1024 INCSTAT(siop_stat_intr_qfull); 1025 #ifdef SIOP_DEBUG 1026 printf("%s:%d:%d: queue full (tag %d)\n", 1027 device_xname(sc->sc_c.sc_dev), 1028 xs->xs_periph->periph_target, 1029 xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); 1030 #endif 1031 xs->error = XS_BUSY; 1032 break; 1033 case SCSI_SIOP_NOCHECK: 1034 /* 1035 * don't check status, xs->error is already valid 1036 */ 1037 break; 1038 case SCSI_SIOP_NOSTATUS: 1039 /* 1040 * the status byte was not updated, cmd was 1041 * aborted 1042 */ 1043 xs->error = XS_SELTIMEOUT; 1044 break; 1045 default: 1046 scsipi_printaddr(xs->xs_periph); 1047 printf("invalid status code %d\n", xs->status); 1048 xs->error = XS_DRIVER_STUFFUP; 1049 } 1050 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1051 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, 1052 0, siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1053 (xs->xs_control & XS_CTL_DATA_IN) ? 1054 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1055 bus_dmamap_unload(sc->sc_c.sc_dmat, 1056 siop_cmd->cmd_c.dmamap_data); 1057 } 1058 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); 1059 if ((xs->xs_control & XS_CTL_POLL) == 0) 1060 callout_stop(&xs->xs_callout); 1061 siop_cmd->cmd_c.status = CMDST_FREE; 1062 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1063 #if 0 1064 if (xs->resid != 0) 1065 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1066 #endif 1067 scsipi_done(xs); 1068 } 1069 1070 void 1071 siop_unqueue(struct siop_softc *sc, int target, int lun) 1072 { 1073 int slot, tag; 1074 struct siop_cmd *siop_cmd; 1075 struct siop_lun *siop_lun = 1076 ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; 1077 1078 /* first make sure to read valid data */ 1079 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1080 1081 for (tag = 1; tag < SIOP_NTAG; tag++) { 1082 /* look for commands in the scheduler, not yet started */ 1083 if (siop_lun->siop_tag[tag].active == NULL) 1084 continue; 1085 siop_cmd = siop_lun->siop_tag[tag].active; 1086 for (slot = 0; slot <= sc->sc_currschedslot; slot++) { 1087 if (siop_script_read(sc, 1088 (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == 1089 siop_cmd->cmd_c.dsa + 1090 sizeof(struct siop_common_xfer) + 1091 Ent_ldsa_select) 1092 break; 1093 } 1094 if (slot > sc->sc_currschedslot) 1095 continue; /* didn't find it */ 1096 if (siop_script_read(sc, 1097 (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) 1098 continue; /* already started */ 1099 /* clear the slot */ 1100 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1101 0x80000000); 1102 /* ask to requeue */ 1103 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1104 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1105 siop_lun->siop_tag[tag].active = NULL; 1106 siop_scsicmd_end(siop_cmd); 1107 } 1108 /* update sc_currschedslot */ 1109 sc->sc_currschedslot = 0; 1110 for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { 1111 if (siop_script_read(sc, 1112 (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) 1113 sc->sc_currschedslot = slot; 1114 } 1115 } 1116 1117 /* 1118 * handle a rejected queue tag message: the command will run untagged, 1119 * has to adjust the reselect script. 1120 */ 1121 int 1122 siop_handle_qtag_reject(struct siop_cmd *siop_cmd) 1123 { 1124 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1125 int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1126 int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1127 int tag = siop_cmd->cmd_tables->msg_out[2]; 1128 struct siop_lun *siop_lun = 1129 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1130 1131 #ifdef SIOP_DEBUG 1132 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1133 device_xname(sc->sc_c.sc_dev), target, lun, tag, 1134 siop_cmd->cmd_c.tag, 1135 siop_cmd->cmd_c.status); 1136 #endif 1137 1138 if (siop_lun->siop_tag[0].active != NULL) { 1139 printf("%s: untagged command already running for target %d " 1140 "lun %d (status %d)\n", device_xname(sc->sc_c.sc_dev), 1141 target, lun, siop_lun->siop_tag[0].active->cmd_c.status); 1142 return -1; 1143 } 1144 /* clear tag slot */ 1145 siop_lun->siop_tag[tag].active = NULL; 1146 /* add command to non-tagged slot */ 1147 siop_lun->siop_tag[0].active = siop_cmd; 1148 siop_cmd->cmd_c.tag = 0; 1149 /* adjust reselect script if there is one */ 1150 if (siop_lun->siop_tag[0].reseloff > 0) { 1151 siop_script_write(sc, 1152 siop_lun->siop_tag[0].reseloff + 1, 1153 siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + 1154 Ent_ldsa_reload_dsa); 1155 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1156 } 1157 return 0; 1158 } 1159 1160 /* 1161 * handle a bus reset: reset chip, unqueue all active commands, free all 1162 * target struct and report lossage to upper layer. 1163 * As the upper layer may requeue immediately we have to first store 1164 * all active commands in a temporary queue. 1165 */ 1166 void 1167 siop_handle_reset(struct siop_softc *sc) 1168 { 1169 struct siop_cmd *siop_cmd; 1170 struct siop_lun *siop_lun; 1171 int target, lun, tag; 1172 1173 /* 1174 * scsi bus reset. reset the chip and restart 1175 * the queue. Need to clean up all active commands 1176 */ 1177 printf("%s: scsi bus reset\n", device_xname(sc->sc_c.sc_dev)); 1178 /* stop, reset and restart the chip */ 1179 siop_reset(sc); 1180 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1181 /* chip has been reset, all slots are free now */ 1182 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1183 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1184 } 1185 /* 1186 * Process all commands: first commands being executed 1187 */ 1188 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1189 target++) { 1190 if (sc->sc_c.targets[target] == NULL) 1191 continue; 1192 for (lun = 0; lun < 8; lun++) { 1193 struct siop_target *siop_target = 1194 (struct siop_target *)sc->sc_c.targets[target]; 1195 siop_lun = siop_target->siop_lun[lun]; 1196 if (siop_lun == NULL) 1197 continue; 1198 for (tag = 0; tag < 1199 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1200 SIOP_NTAG : 1); 1201 tag++) { 1202 siop_cmd = siop_lun->siop_tag[tag].active; 1203 if (siop_cmd == NULL) 1204 continue; 1205 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1206 printf("command with tag id %d reset\n", tag); 1207 siop_cmd->cmd_c.xs->error = 1208 (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1209 XS_TIMEOUT : XS_RESET; 1210 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1211 siop_lun->siop_tag[tag].active = NULL; 1212 siop_cmd->cmd_c.status = CMDST_DONE; 1213 siop_scsicmd_end(siop_cmd); 1214 } 1215 } 1216 sc->sc_c.targets[target]->status = TARST_ASYNC; 1217 sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; 1218 sc->sc_c.targets[target]->period = 1219 sc->sc_c.targets[target]->offset = 0; 1220 siop_update_xfer_mode(&sc->sc_c, target); 1221 } 1222 1223 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1224 } 1225 1226 void 1227 siop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 1228 void *arg) 1229 { 1230 struct scsipi_xfer *xs; 1231 struct scsipi_periph *periph; 1232 struct siop_softc *sc = device_private(chan->chan_adapter->adapt_dev); 1233 struct siop_cmd *siop_cmd; 1234 struct siop_target *siop_target; 1235 int s, error, i; 1236 int target; 1237 int lun; 1238 1239 switch (req) { 1240 case ADAPTER_REQ_RUN_XFER: 1241 xs = arg; 1242 periph = xs->xs_periph; 1243 target = periph->periph_target; 1244 lun = periph->periph_lun; 1245 1246 s = splbio(); 1247 #ifdef SIOP_DEBUG_SCHED 1248 printf("starting cmd for %d:%d\n", target, lun); 1249 #endif 1250 siop_cmd = TAILQ_FIRST(&sc->free_list); 1251 if (siop_cmd == NULL) { 1252 xs->error = XS_RESOURCE_SHORTAGE; 1253 scsipi_done(xs); 1254 splx(s); 1255 return; 1256 } 1257 TAILQ_REMOVE(&sc->free_list, siop_cmd, next); 1258 #ifdef DIAGNOSTIC 1259 if (siop_cmd->cmd_c.status != CMDST_FREE) 1260 panic("siop_scsicmd: new cmd not free"); 1261 #endif 1262 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1263 if (siop_target == NULL) { 1264 #ifdef SIOP_DEBUG 1265 printf("%s: alloc siop_target for target %d\n", 1266 device_xname(sc->sc_c.sc_dev), target); 1267 #endif 1268 sc->sc_c.targets[target] = 1269 malloc(sizeof(struct siop_target), 1270 M_DEVBUF, M_NOWAIT|M_ZERO); 1271 if (sc->sc_c.targets[target] == NULL) { 1272 aprint_error_dev(sc->sc_c.sc_dev, 1273 "can't malloc memory for " 1274 "target %d\n", target); 1275 xs->error = XS_RESOURCE_SHORTAGE; 1276 scsipi_done(xs); 1277 TAILQ_INSERT_TAIL(&sc->free_list, 1278 siop_cmd, next); 1279 splx(s); 1280 return; 1281 } 1282 siop_target = 1283 (struct siop_target *)sc->sc_c.targets[target]; 1284 siop_target->target_c.status = TARST_PROBING; 1285 siop_target->target_c.flags = 0; 1286 siop_target->target_c.id = 1287 sc->sc_c.clock_div << 24; /* scntl3 */ 1288 siop_target->target_c.id |= target << 16; /* id */ 1289 /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1290 1291 /* get a lun switch script */ 1292 siop_target->lunsw = siop_get_lunsw(sc); 1293 if (siop_target->lunsw == NULL) { 1294 aprint_error_dev(sc->sc_c.sc_dev, 1295 "can't alloc lunsw for target %d\n", 1296 target); 1297 xs->error = XS_RESOURCE_SHORTAGE; 1298 scsipi_done(xs); 1299 TAILQ_INSERT_TAIL(&sc->free_list, 1300 siop_cmd, next); 1301 splx(s); 1302 return; 1303 } 1304 for (i=0; i < 8; i++) 1305 siop_target->siop_lun[i] = NULL; 1306 siop_add_reselsw(sc, target); 1307 } 1308 if (siop_target->siop_lun[lun] == NULL) { 1309 siop_target->siop_lun[lun] = 1310 malloc(sizeof(struct siop_lun), M_DEVBUF, 1311 M_NOWAIT|M_ZERO); 1312 if (siop_target->siop_lun[lun] == NULL) { 1313 aprint_error_dev(sc->sc_c.sc_dev, 1314 "can't alloc siop_lun for " 1315 "target %d lun %d\n", 1316 target, lun); 1317 xs->error = XS_RESOURCE_SHORTAGE; 1318 scsipi_done(xs); 1319 TAILQ_INSERT_TAIL(&sc->free_list, 1320 siop_cmd, next); 1321 splx(s); 1322 return; 1323 } 1324 } 1325 siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1326 siop_cmd->cmd_c.xs = xs; 1327 siop_cmd->cmd_c.flags = 0; 1328 siop_cmd->cmd_c.status = CMDST_READY; 1329 1330 /* load the DMA maps */ 1331 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1332 siop_cmd->cmd_c.dmamap_cmd, 1333 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1334 if (error) { 1335 aprint_error_dev(sc->sc_c.sc_dev, 1336 "unable to load cmd DMA map: %d\n", 1337 error); 1338 xs->error = (error == EAGAIN) ? 1339 XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; 1340 scsipi_done(xs); 1341 siop_cmd->cmd_c.status = CMDST_FREE; 1342 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1343 splx(s); 1344 return; 1345 } 1346 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1347 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1348 siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1349 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1350 ((xs->xs_control & XS_CTL_DATA_IN) ? 1351 BUS_DMA_READ : BUS_DMA_WRITE)); 1352 if (error) { 1353 aprint_error_dev(sc->sc_c.sc_dev, 1354 "unable to load data DMA map: %d\n", 1355 error); 1356 xs->error = (error == EAGAIN) ? 1357 XS_RESOURCE_SHORTAGE : XS_DRIVER_STUFFUP; 1358 scsipi_done(xs); 1359 bus_dmamap_unload(sc->sc_c.sc_dmat, 1360 siop_cmd->cmd_c.dmamap_cmd); 1361 siop_cmd->cmd_c.status = CMDST_FREE; 1362 TAILQ_INSERT_TAIL(&sc->free_list, 1363 siop_cmd, next); 1364 splx(s); 1365 return; 1366 } 1367 bus_dmamap_sync(sc->sc_c.sc_dmat, 1368 siop_cmd->cmd_c.dmamap_data, 0, 1369 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1370 (xs->xs_control & XS_CTL_DATA_IN) ? 1371 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1372 } 1373 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, 1374 siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1375 BUS_DMASYNC_PREWRITE); 1376 1377 if (xs->xs_tag_type) { 1378 /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ 1379 siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; 1380 } else { 1381 siop_cmd->cmd_c.tag = 0; 1382 } 1383 siop_setuptables(&siop_cmd->cmd_c); 1384 siop_cmd->saved_offset = SIOP_NOOFFSET; 1385 siop_table_sync(siop_cmd, 1386 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1387 siop_start(sc, siop_cmd); 1388 if (xs->xs_control & XS_CTL_POLL) { 1389 /* poll for command completion */ 1390 while ((xs->xs_status & XS_STS_DONE) == 0) { 1391 delay(1000); 1392 siop_intr(sc); 1393 } 1394 } 1395 splx(s); 1396 return; 1397 1398 case ADAPTER_REQ_GROW_RESOURCES: 1399 #ifdef SIOP_DEBUG 1400 printf("%s grow resources (%d)\n", 1401 device_xname(sc->sc_c.sc_dev), 1402 sc->sc_c.sc_adapt.adapt_openings); 1403 #endif 1404 siop_morecbd(sc); 1405 return; 1406 1407 case ADAPTER_REQ_SET_XFER_MODE: 1408 { 1409 struct scsipi_xfer_mode *xm = arg; 1410 if (sc->sc_c.targets[xm->xm_target] == NULL) 1411 return; 1412 s = splbio(); 1413 if (xm->xm_mode & PERIPH_CAP_TQING) 1414 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1415 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1416 (sc->sc_c.features & SF_BUS_WIDE)) 1417 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1418 if (xm->xm_mode & PERIPH_CAP_SYNC) 1419 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1420 if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || 1421 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1422 sc->sc_c.targets[xm->xm_target]->status = 1423 TARST_ASYNC; 1424 1425 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1426 if (scsipi_lookup_periph(chan, 1427 xm->xm_target, lun) != NULL) { 1428 /* allocate a lun sw entry for this device */ 1429 siop_add_dev(sc, xm->xm_target, lun); 1430 } 1431 } 1432 1433 splx(s); 1434 } 1435 } 1436 } 1437 1438 static void 1439 siop_start(struct siop_softc *sc, struct siop_cmd *siop_cmd) 1440 { 1441 struct siop_lun *siop_lun; 1442 struct siop_xfer *siop_xfer; 1443 uint32_t dsa; 1444 int timeout; 1445 int target, lun, slot; 1446 1447 /* 1448 * first make sure to read valid data 1449 */ 1450 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1451 1452 /* 1453 * The queue management here is a bit tricky: the script always looks 1454 * at the slot from first to last, so if we always use the first 1455 * free slot commands can stay at the tail of the queue ~forever. 1456 * The algorithm used here is to restart from the head when we know 1457 * that the queue is empty, and only add commands after the last one. 1458 * When we're at the end of the queue wait for the script to clear it. 1459 * The best thing to do here would be to implement a circular queue, 1460 * but using only 53c720 features this can be "interesting". 1461 * A mid-way solution could be to implement 2 queues and swap orders. 1462 */ 1463 slot = sc->sc_currschedslot; 1464 /* 1465 * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is 1466 * free. As this is the last used slot, all previous slots are free, 1467 * we can restart from 0. 1468 */ 1469 if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == 1470 0x80000000) { 1471 slot = sc->sc_currschedslot = 0; 1472 } else { 1473 slot++; 1474 } 1475 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1476 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1477 siop_lun = 1478 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1479 /* if non-tagged command active, panic: this shouldn't happen */ 1480 if (siop_lun->siop_tag[0].active != NULL) { 1481 panic("siop_start: tagged cmd while untagged running"); 1482 } 1483 #ifdef DIAGNOSTIC 1484 /* sanity check the tag if needed */ 1485 if (siop_cmd->cmd_c.flags & CMDFL_TAG) { 1486 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) 1487 panic("siop_start: tag not free"); 1488 if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { 1489 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1490 printf(": tag id %d\n", siop_cmd->cmd_c.tag); 1491 panic("siop_start: invalid tag id"); 1492 } 1493 } 1494 #endif 1495 /* 1496 * find a free scheduler slot and load it. 1497 */ 1498 for (; slot < SIOP_NSLOTS; slot++) { 1499 /* 1500 * If cmd if 0x80000000 the slot is free 1501 */ 1502 if (siop_script_read(sc, 1503 (Ent_script_sched_slot0 / 4) + slot * 2) == 1504 0x80000000) 1505 break; 1506 } 1507 if (slot == SIOP_NSLOTS) { 1508 /* 1509 * no more free slot, no need to continue. freeze the queue 1510 * and requeue this command. 1511 */ 1512 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1513 sc->sc_flags |= SCF_CHAN_NOSLOT; 1514 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1515 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1516 siop_scsicmd_end(siop_cmd); 1517 return; 1518 } 1519 #ifdef SIOP_DEBUG_SCHED 1520 printf("using slot %d for DSA 0x%lx\n", slot, 1521 (u_long)siop_cmd->cmd_c.dsa); 1522 #endif 1523 /* mark command as active */ 1524 if (siop_cmd->cmd_c.status == CMDST_READY) 1525 siop_cmd->cmd_c.status = CMDST_ACTIVE; 1526 else 1527 panic("siop_start: bad status"); 1528 siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; 1529 /* patch scripts with DSA addr */ 1530 dsa = siop_cmd->cmd_c.dsa; 1531 /* first reselect switch, if we have an entry */ 1532 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) 1533 siop_script_write(sc, 1534 siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, 1535 dsa + sizeof(struct siop_common_xfer) + 1536 Ent_ldsa_reload_dsa); 1537 /* CMD script: MOVE MEMORY addr */ 1538 siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; 1539 siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = 1540 siop_htoc32(&sc->sc_c, sc->sc_c.sc_scriptaddr + 1541 Ent_script_sched_slot0 + slot * 8); 1542 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1543 /* scheduler slot: JUMP ldsa_select */ 1544 siop_script_write(sc, 1545 (Ent_script_sched_slot0 / 4) + slot * 2 + 1, 1546 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); 1547 /* handle timeout */ 1548 if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1549 /* start exire timer */ 1550 timeout = mstohz(siop_cmd->cmd_c.xs->timeout); 1551 if (timeout == 0) 1552 timeout = 1; 1553 callout_reset( &siop_cmd->cmd_c.xs->xs_callout, 1554 timeout, siop_timeout, siop_cmd); 1555 } 1556 /* 1557 * Change JUMP cmd so that this slot will be handled 1558 */ 1559 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1560 0x80080000); 1561 sc->sc_currschedslot = slot; 1562 1563 /* make sure SCRIPT processor will read valid data */ 1564 siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1565 /* Signal script it has some work to do */ 1566 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1567 SIOP_ISTAT, ISTAT_SIGP); 1568 /* and wait for IRQ */ 1569 } 1570 1571 void 1572 siop_timeout(void *v) 1573 { 1574 struct siop_cmd *siop_cmd = v; 1575 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1576 int s; 1577 1578 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1579 printf("command timeout, CDB: "); 1580 scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); 1581 printf("\n"); 1582 1583 s = splbio(); 1584 /* reset the scsi bus */ 1585 siop_resetbus(&sc->sc_c); 1586 1587 /* deactivate callout */ 1588 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1589 /* mark command as being timed out; siop_intr will handle it */ 1590 /* 1591 * mark command has being timed out and just return; 1592 * the bus reset will generate an interrupt, 1593 * it will be handled in siop_intr() 1594 */ 1595 siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1596 splx(s); 1597 } 1598 1599 void 1600 siop_dump_script(struct siop_softc *sc) 1601 { 1602 int i; 1603 1604 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1605 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1606 siop_script_read(sc, i), 1607 siop_script_read(sc, i + 1)); 1608 if ((siop_script_read(sc, i) & 0xe0000000) == 0xc0000000) { 1609 i++; 1610 printf(" 0x%08x", siop_script_read(sc, i + 1)); 1611 } 1612 printf("\n"); 1613 } 1614 } 1615 1616 void 1617 siop_morecbd(struct siop_softc *sc) 1618 { 1619 int error, off, i, j, s; 1620 bus_dma_segment_t seg; 1621 int rseg; 1622 struct siop_cbd *newcbd; 1623 struct siop_xfer *xfer; 1624 bus_addr_t dsa; 1625 uint32_t *scr; 1626 1627 /* allocate a new list head */ 1628 newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1629 if (newcbd == NULL) { 1630 aprint_error_dev(sc->sc_c.sc_dev, 1631 "can't allocate memory for command descriptors head\n"); 1632 return; 1633 } 1634 1635 /* allocate cmd list */ 1636 newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, 1637 M_DEVBUF, M_NOWAIT|M_ZERO); 1638 if (newcbd->cmds == NULL) { 1639 aprint_error_dev(sc->sc_c.sc_dev, 1640 "can't allocate memory for command descriptors\n"); 1641 goto bad3; 1642 } 1643 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 1644 0, &seg, 1, &rseg, BUS_DMA_NOWAIT); 1645 if (error) { 1646 aprint_error_dev(sc->sc_c.sc_dev, 1647 "unable to allocate cbd DMA memory, error = %d\n", 1648 error); 1649 goto bad2; 1650 } 1651 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1652 (void **)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1653 if (error) { 1654 aprint_error_dev(sc->sc_c.sc_dev, 1655 "unable to map cbd DMA memory, error = %d\n", 1656 error); 1657 goto bad2; 1658 } 1659 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1660 BUS_DMA_NOWAIT, &newcbd->xferdma); 1661 if (error) { 1662 aprint_error_dev(sc->sc_c.sc_dev, 1663 "unable to create cbd DMA map, error = %d\n", 1664 error); 1665 goto bad1; 1666 } 1667 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, 1668 newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1669 if (error) { 1670 aprint_error_dev(sc->sc_c.sc_dev, 1671 "unable to load cbd DMA map, error = %d\n", 1672 error); 1673 goto bad0; 1674 } 1675 #ifdef SIOP_DEBUG 1676 printf("%s: alloc newcdb at PHY addr 0x%lx\n", 1677 device_xname(sc->sc_c.sc_dev), 1678 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1679 #endif 1680 off = (sc->sc_c.features & SF_CHIP_BE) ? 3 : 0; 1681 for (i = 0; i < SIOP_NCMDPB; i++) { 1682 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1683 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1684 &newcbd->cmds[i].cmd_c.dmamap_data); 1685 if (error) { 1686 aprint_error_dev(sc->sc_c.sc_dev, 1687 "unable to create data DMA map for cbd: " 1688 "error %d\n", error); 1689 goto bad0; 1690 } 1691 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1692 sizeof(struct scsipi_generic), 1, 1693 sizeof(struct scsipi_generic), 0, 1694 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1695 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1696 if (error) { 1697 aprint_error_dev(sc->sc_c.sc_dev, 1698 "unable to create cmd DMA map for cbd %d\n", error); 1699 goto bad0; 1700 } 1701 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1702 newcbd->cmds[i].siop_cbdp = newcbd; 1703 xfer = &newcbd->xfers[i]; 1704 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1705 memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); 1706 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1707 i * sizeof(struct siop_xfer); 1708 newcbd->cmds[i].cmd_c.dsa = dsa; 1709 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1710 xfer->siop_tables.t_msgout.count= siop_htoc32(&sc->sc_c, 1); 1711 xfer->siop_tables.t_msgout.addr = siop_htoc32(&sc->sc_c, dsa); 1712 xfer->siop_tables.t_msgin.count= siop_htoc32(&sc->sc_c, 1); 1713 xfer->siop_tables.t_msgin.addr = siop_htoc32(&sc->sc_c, 1714 dsa + offsetof(struct siop_common_xfer, msg_in)); 1715 xfer->siop_tables.t_extmsgin.count= siop_htoc32(&sc->sc_c, 2); 1716 xfer->siop_tables.t_extmsgin.addr = siop_htoc32(&sc->sc_c, 1717 dsa + offsetof(struct siop_common_xfer, msg_in) + 1); 1718 xfer->siop_tables.t_extmsgdata.addr = siop_htoc32(&sc->sc_c, 1719 dsa + offsetof(struct siop_common_xfer, msg_in) + 3); 1720 xfer->siop_tables.t_status.count= siop_htoc32(&sc->sc_c, 1); 1721 xfer->siop_tables.t_status.addr = siop_htoc32(&sc->sc_c, 1722 dsa + offsetof(struct siop_common_xfer, status) + off); 1723 /* The select/reselect script */ 1724 scr = &xfer->resel[0]; 1725 for (j = 0; j < __arraycount(load_dsa); j++) 1726 scr[j] = siop_htoc32(&sc->sc_c, load_dsa[j]); 1727 /* 1728 * 0x78000000 is a 'move data8 to reg'. data8 is the second 1729 * octet, reg offset is the third. 1730 */ 1731 scr[Ent_rdsa0 / 4] = siop_htoc32(&sc->sc_c, 1732 0x78100000 | ((dsa & 0x000000ff) << 8)); 1733 scr[Ent_rdsa1 / 4] = siop_htoc32(&sc->sc_c, 1734 0x78110000 | ( dsa & 0x0000ff00 )); 1735 scr[Ent_rdsa2 / 4] = siop_htoc32(&sc->sc_c, 1736 0x78120000 | ((dsa & 0x00ff0000) >> 8)); 1737 scr[Ent_rdsa3 / 4] = siop_htoc32(&sc->sc_c, 1738 0x78130000 | ((dsa & 0xff000000) >> 16)); 1739 scr[E_ldsa_abs_reselected_Used[0]] = siop_htoc32(&sc->sc_c, 1740 sc->sc_c.sc_scriptaddr + Ent_reselected); 1741 scr[E_ldsa_abs_reselect_Used[0]] = siop_htoc32(&sc->sc_c, 1742 sc->sc_c.sc_scriptaddr + Ent_reselect); 1743 scr[E_ldsa_abs_selected_Used[0]] = siop_htoc32(&sc->sc_c, 1744 sc->sc_c.sc_scriptaddr + Ent_selected); 1745 scr[E_ldsa_abs_data_Used[0]] = siop_htoc32(&sc->sc_c, 1746 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_data); 1747 /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ 1748 scr[Ent_ldsa_data / 4] = siop_htoc32(&sc->sc_c, 0x80000000); 1749 s = splbio(); 1750 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1751 splx(s); 1752 #ifdef SIOP_DEBUG 1753 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1754 siop_ctoh32(&sc->sc_c, 1755 newcbd->cmds[i].cmd_tables->t_msgin.addr), 1756 siop_ctoh32(&sc->sc_c, 1757 newcbd->cmds[i].cmd_tables->t_msgout.addr), 1758 siop_ctoh32(&sc->sc_c, 1759 newcbd->cmds[i].cmd_tables->t_status.addr)); 1760 #endif 1761 } 1762 s = splbio(); 1763 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1764 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1765 splx(s); 1766 return; 1767 bad0: 1768 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1769 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1770 bad1: 1771 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1772 bad2: 1773 free(newcbd->cmds, M_DEVBUF); 1774 bad3: 1775 free(newcbd, M_DEVBUF); 1776 } 1777 1778 struct siop_lunsw * 1779 siop_get_lunsw(struct siop_softc *sc) 1780 { 1781 struct siop_lunsw *lunsw; 1782 int i; 1783 1784 if (sc->script_free_lo + __arraycount(lun_switch) >= sc->script_free_hi) 1785 return NULL; 1786 lunsw = TAILQ_FIRST(&sc->lunsw_list); 1787 if (lunsw != NULL) { 1788 #ifdef SIOP_DEBUG 1789 printf("siop_get_lunsw got lunsw at offset %d\n", 1790 lunsw->lunsw_off); 1791 #endif 1792 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 1793 return lunsw; 1794 } 1795 lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); 1796 if (lunsw == NULL) 1797 return NULL; 1798 #ifdef SIOP_DEBUG 1799 printf("allocating lunsw at offset %d\n", sc->script_free_lo); 1800 #endif 1801 if (sc->sc_c.features & SF_CHIP_RAM) { 1802 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1803 sc->script_free_lo * 4, lun_switch, 1804 __arraycount(lun_switch)); 1805 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1806 (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, 1807 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1808 } else { 1809 for (i = 0; i < __arraycount(lun_switch); i++) 1810 sc->sc_c.sc_script[sc->script_free_lo + i] = 1811 siop_htoc32(&sc->sc_c, lun_switch[i]); 1812 sc->sc_c.sc_script[ 1813 sc->script_free_lo + E_abs_lunsw_return_Used[0]] = 1814 siop_htoc32(&sc->sc_c, 1815 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1816 } 1817 lunsw->lunsw_off = sc->script_free_lo; 1818 lunsw->lunsw_size = __arraycount(lun_switch); 1819 sc->script_free_lo += lunsw->lunsw_size; 1820 siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1821 return lunsw; 1822 } 1823 1824 void 1825 siop_add_reselsw(struct siop_softc *sc, int target) 1826 { 1827 int i, j; 1828 struct siop_target *siop_target; 1829 struct siop_lun *siop_lun; 1830 1831 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1832 /* 1833 * add an entry to resel switch 1834 */ 1835 siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); 1836 for (i = 0; i < 15; i++) { 1837 siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; 1838 if ((siop_script_read(sc, siop_target->reseloff) & 0xff) 1839 == 0xff) { /* it's free */ 1840 #ifdef SIOP_DEBUG 1841 printf("siop: target %d slot %d offset %d\n", 1842 target, i, siop_target->reseloff); 1843 #endif 1844 /* JUMP abs_foo, IF target | 0x80; */ 1845 siop_script_write(sc, siop_target->reseloff, 1846 0x800c0080 | target); 1847 siop_script_write(sc, siop_target->reseloff + 1, 1848 sc->sc_c.sc_scriptaddr + 1849 siop_target->lunsw->lunsw_off * 4 + 1850 Ent_lun_switch_entry); 1851 break; 1852 } 1853 } 1854 if (i == 15) /* no free slot, shouldn't happen */ 1855 panic("siop: resel switch full"); 1856 1857 sc->sc_ntargets++; 1858 for (i = 0; i < 8; i++) { 1859 siop_lun = siop_target->siop_lun[i]; 1860 if (siop_lun == NULL) 1861 continue; 1862 if (siop_lun->reseloff > 0) { 1863 siop_lun->reseloff = 0; 1864 for (j = 0; j < SIOP_NTAG; j++) 1865 siop_lun->siop_tag[j].reseloff = 0; 1866 siop_add_dev(sc, target, i); 1867 } 1868 } 1869 siop_update_scntl3(sc, sc->sc_c.targets[target]); 1870 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1871 } 1872 1873 void 1874 siop_update_scntl3(struct siop_softc *sc, 1875 struct siop_common_target *_siop_target) 1876 { 1877 struct siop_target *siop_target = (struct siop_target *)_siop_target; 1878 1879 /* MOVE target->id >> 24 TO SCNTL3 */ 1880 siop_script_write(sc, 1881 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), 1882 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); 1883 /* MOVE target->id >> 8 TO SXFER */ 1884 siop_script_write(sc, 1885 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, 1886 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); 1887 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1888 } 1889 1890 void 1891 siop_add_dev(struct siop_softc *sc, int target, int lun) 1892 { 1893 struct siop_lunsw *lunsw; 1894 struct siop_target *siop_target = 1895 (struct siop_target *)sc->sc_c.targets[target]; 1896 struct siop_lun *siop_lun = siop_target->siop_lun[lun]; 1897 int i, ntargets; 1898 1899 if (siop_lun->reseloff > 0) 1900 return; 1901 lunsw = siop_target->lunsw; 1902 if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { 1903 /* 1904 * can't extend this slot. Probably not worth trying to deal 1905 * with this case 1906 */ 1907 #ifdef SIOP_DEBUG 1908 aprint_error_dev(sc->sc_c.sc_dev, 1909 "%d:%d: can't allocate a lun sw slot\n", target, lun); 1910 #endif 1911 return; 1912 } 1913 /* count how many free targets we still have to probe */ 1914 ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; 1915 1916 /* 1917 * we need 8 bytes for the lun sw additional entry, and 1918 * eventually sizeof(tag_switch) for the tag switch entry. 1919 * Keep enough free space for the free targets that could be 1920 * probed later. 1921 */ 1922 if (sc->script_free_lo + 2 + 1923 (ntargets * __arraycount(lun_switch)) >= 1924 ((siop_target->target_c.flags & TARF_TAG) ? 1925 sc->script_free_hi - __arraycount(tag_switch) : 1926 sc->script_free_hi)) { 1927 /* 1928 * not enough space, probably not worth dealing with it. 1929 * We can hold 13 tagged-queuing capable devices in the 4k RAM. 1930 */ 1931 #ifdef SIOP_DEBUG 1932 aprint_error_dev(sc->sc_c.sc_dev, 1933 "%d:%d: not enough memory for a lun sw slot\n", 1934 target, lun); 1935 #endif 1936 return; 1937 } 1938 #ifdef SIOP_DEBUG 1939 printf("%s:%d:%d: allocate lun sw entry\n", 1940 device_xname(sc->sc_c.sc_dev), target, lun); 1941 #endif 1942 /* INT int_resellun */ 1943 siop_script_write(sc, sc->script_free_lo, 0x98080000); 1944 siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); 1945 /* Now the slot entry: JUMP abs_foo, IF lun */ 1946 siop_script_write(sc, sc->script_free_lo - 2, 1947 0x800c0000 | lun); 1948 siop_script_write(sc, sc->script_free_lo - 1, 0); 1949 siop_lun->reseloff = sc->script_free_lo - 2; 1950 lunsw->lunsw_size += 2; 1951 sc->script_free_lo += 2; 1952 if (siop_target->target_c.flags & TARF_TAG) { 1953 /* we need a tag switch */ 1954 sc->script_free_hi -= __arraycount(tag_switch); 1955 if (sc->sc_c.features & SF_CHIP_RAM) { 1956 bus_space_write_region_4(sc->sc_c.sc_ramt, 1957 sc->sc_c.sc_ramh, 1958 sc->script_free_hi * 4, tag_switch, 1959 __arraycount(tag_switch)); 1960 } else { 1961 for(i = 0; i < __arraycount(tag_switch); i++) { 1962 sc->sc_c.sc_script[sc->script_free_hi + i] = 1963 siop_htoc32(&sc->sc_c, tag_switch[i]); 1964 } 1965 } 1966 siop_script_write(sc, 1967 siop_lun->reseloff + 1, 1968 sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + 1969 Ent_tag_switch_entry); 1970 1971 for (i = 0; i < SIOP_NTAG; i++) { 1972 siop_lun->siop_tag[i].reseloff = 1973 sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; 1974 } 1975 } else { 1976 /* non-tag case; just work with the lun switch */ 1977 siop_lun->siop_tag[0].reseloff = 1978 siop_target->siop_lun[lun]->reseloff; 1979 } 1980 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1981 } 1982 1983 void 1984 siop_del_dev(struct siop_softc *sc, int target, int lun) 1985 { 1986 int i; 1987 struct siop_target *siop_target; 1988 1989 #ifdef SIOP_DEBUG 1990 printf("%s:%d:%d: free lun sw entry\n", 1991 device_xname(sc->sc_c.sc_dev), target, lun); 1992 #endif 1993 if (sc->sc_c.targets[target] == NULL) 1994 return; 1995 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1996 free(siop_target->siop_lun[lun], M_DEVBUF); 1997 siop_target->siop_lun[lun] = NULL; 1998 /* XXX compact sw entry too ? */ 1999 /* check if we can free the whole target */ 2000 for (i = 0; i < 8; i++) { 2001 if (siop_target->siop_lun[i] != NULL) 2002 return; 2003 } 2004 #ifdef SIOP_DEBUG 2005 printf("%s: free siop_target for target %d lun %d lunsw offset %d\n", 2006 device_xname(sc->sc_c.sc_dev), target, lun, 2007 siop_target->lunsw->lunsw_off); 2008 #endif 2009 /* 2010 * nothing here, free the target struct and resel 2011 * switch entry 2012 */ 2013 siop_script_write(sc, siop_target->reseloff, 0x800c00ff); 2014 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 2015 TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); 2016 free(sc->sc_c.targets[target], M_DEVBUF); 2017 sc->sc_c.targets[target] = NULL; 2018 sc->sc_ntargets--; 2019 } 2020 2021 #ifdef SIOP_STATS 2022 void 2023 siop_printstats(void) 2024 { 2025 2026 printf("siop_stat_intr %d\n", siop_stat_intr); 2027 printf("siop_stat_intr_shortxfer %d\n", siop_stat_intr_shortxfer); 2028 printf("siop_stat_intr_xferdisc %d\n", siop_stat_intr_xferdisc); 2029 printf("siop_stat_intr_sdp %d\n", siop_stat_intr_sdp); 2030 printf("siop_stat_intr_saveoffset %d\n", siop_stat_intr_saveoffset); 2031 printf("siop_stat_intr_done %d\n", siop_stat_intr_done); 2032 printf("siop_stat_intr_lunresel %d\n", siop_stat_intr_lunresel); 2033 printf("siop_stat_intr_qfull %d\n", siop_stat_intr_qfull); 2034 } 2035 #endif 2036
Indexes created Wed Sep 24 05:09:52 GMT 2025