1 /* $NetBSD: siop.c,v 1.65 2002/11/08 22:04:41 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 1.65 2002/11/08 22:04:41 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; 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 dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); 344 for (cbdp = TAILQ_FIRST(&sc->cmds); cbdp != NULL; 345 cbdp = TAILQ_NEXT(cbdp, 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 (cbdp == NULL) { 356 siop_cmd = NULL; 357 } 358 if (siop_cmd) { 359 xs = siop_cmd->cmd_c.xs; 360 siop_target = (struct siop_target *)siop_cmd->cmd_c.siop_target; 361 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 362 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 363 tag = siop_cmd->cmd_c.tag; 364 siop_lun = siop_target->siop_lun[lun]; 365 #ifdef DIAGNOSTIC 366 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 367 printf("siop_cmd (lun %d) for DSA 0x%x " 368 "not active (%d)\n", lun, (u_int)dsa, 369 siop_cmd->cmd_c.status); 370 xs = NULL; 371 siop_target = NULL; 372 target = -1; 373 lun = -1; 374 tag = -1; 375 siop_lun = NULL; 376 siop_cmd = NULL; 377 } else if (siop_lun->siop_tag[tag].active != siop_cmd) { 378 printf("siop_cmd (lun %d tag %d) not in siop_lun " 379 "active (%p != %p)\n", lun, tag, siop_cmd, 380 siop_lun->siop_tag[tag].active); 381 } 382 #endif 383 } else { 384 xs = NULL; 385 siop_target = NULL; 386 target = -1; 387 lun = -1; 388 tag = -1; 389 siop_lun = NULL; 390 } 391 if (istat & ISTAT_DIP) { 392 dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 393 SIOP_DSTAT); 394 if (dstat & DSTAT_ABRT) { 395 /* was probably generated by a bus reset IOCTL */ 396 if ((dstat & DSTAT_DFE) == 0) 397 siop_clearfifo(&sc->sc_c); 398 goto reset; 399 } 400 if (dstat & DSTAT_SSI) { 401 printf("single step dsp 0x%08x dsa 0x08%x\n", 402 (int)(bus_space_read_4(sc->sc_c.sc_rt, 403 sc->sc_c.sc_rh, SIOP_DSP) - 404 sc->sc_c.sc_scriptaddr), 405 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 406 SIOP_DSA)); 407 if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && 408 (istat & ISTAT_SIP) == 0) { 409 bus_space_write_1(sc->sc_c.sc_rt, 410 sc->sc_c.sc_rh, SIOP_DCNTL, 411 bus_space_read_1(sc->sc_c.sc_rt, 412 sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); 413 } 414 return 1; 415 } 416 417 if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { 418 printf("DMA IRQ:"); 419 if (dstat & DSTAT_IID) 420 printf(" Illegal instruction"); 421 if (dstat & DSTAT_BF) 422 printf(" bus fault"); 423 if (dstat & DSTAT_MDPE) 424 printf(" parity"); 425 if (dstat & DSTAT_DFE) 426 printf(" dma fifo empty"); 427 else 428 siop_clearfifo(&sc->sc_c); 429 printf(", DSP=0x%x DSA=0x%x: ", 430 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 431 SIOP_DSP) - sc->sc_c.sc_scriptaddr), 432 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 433 if (siop_cmd) 434 printf("last msg_in=0x%x status=0x%x\n", 435 siop_cmd->cmd_tables->msg_in[0], 436 le32toh(siop_cmd->cmd_tables->status)); 437 else 438 printf("%s: current DSA invalid\n", 439 sc->sc_c.sc_dev.dv_xname); 440 need_reset = 1; 441 } 442 } 443 if (istat & ISTAT_SIP) { 444 if (istat & ISTAT_DIP) 445 delay(10); 446 /* 447 * Can't read sist0 & sist1 independantly, or we have to 448 * insert delay 449 */ 450 sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 451 SIOP_SIST0); 452 sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 453 SIOP_SSTAT1); 454 #ifdef SIOP_DEBUG_INTR 455 printf("scsi interrupt, sist=0x%x sstat1=0x%x " 456 "DSA=0x%x DSP=0x%lx\n", sist, 457 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 458 SIOP_SSTAT1), 459 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 460 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 461 SIOP_DSP) - 462 sc->sc_c.sc_scriptaddr)); 463 #endif 464 if (sist & SIST0_RST) { 465 siop_handle_reset(sc); 466 /* no table to flush here */ 467 return 1; 468 } 469 if (sist & SIST0_SGE) { 470 if (siop_cmd) 471 scsipi_printaddr(xs->xs_periph); 472 else 473 printf("%s:", sc->sc_c.sc_dev.dv_xname); 474 printf("scsi gross error\n"); 475 goto reset; 476 } 477 if ((sist & SIST0_MA) && need_reset == 0) { 478 if (siop_cmd) { 479 int scratcha0; 480 dstat = bus_space_read_1(sc->sc_c.sc_rt, 481 sc->sc_c.sc_rh, SIOP_DSTAT); 482 /* 483 * first restore DSA, in case we were in a S/G 484 * operation. 485 */ 486 bus_space_write_4(sc->sc_c.sc_rt, 487 sc->sc_c.sc_rh, 488 SIOP_DSA, siop_cmd->cmd_c.dsa); 489 scratcha0 = bus_space_read_1(sc->sc_c.sc_rt, 490 sc->sc_c.sc_rh, SIOP_SCRATCHA); 491 switch (sstat1 & SSTAT1_PHASE_MASK) { 492 case SSTAT1_PHASE_STATUS: 493 /* 494 * previous phase may be aborted for any reason 495 * ( for example, the target has less data to 496 * transfer than requested). Just go to status 497 * and the command should terminate. 498 */ 499 INCSTAT(siop_stat_intr_shortxfer); 500 if ((dstat & DSTAT_DFE) == 0) 501 siop_clearfifo(&sc->sc_c); 502 /* no table to flush here */ 503 CALL_SCRIPT(Ent_status); 504 return 1; 505 case SSTAT1_PHASE_MSGIN: 506 /* 507 * target may be ready to disconnect 508 * Save data pointers just in case. 509 */ 510 INCSTAT(siop_stat_intr_xferdisc); 511 if (scratcha0 & A_flag_data) 512 siop_sdp(&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 siop_table_sync(siop_cmd, 519 BUS_DMASYNC_PREREAD | 520 BUS_DMASYNC_PREWRITE); 521 CALL_SCRIPT(Ent_msgin); 522 return 1; 523 } 524 printf("%s: unexpected phase mismatch %d\n", 525 sc->sc_c.sc_dev.dv_xname, 526 sstat1 & SSTAT1_PHASE_MASK); 527 } else { 528 printf("%s: phase mismatch without command\n", 529 sc->sc_c.sc_dev.dv_xname); 530 } 531 need_reset = 1; 532 } 533 if (sist & SIST0_PAR) { 534 /* parity error, reset */ 535 if (siop_cmd) 536 scsipi_printaddr(xs->xs_periph); 537 else 538 printf("%s:", sc->sc_c.sc_dev.dv_xname); 539 printf("parity error\n"); 540 goto reset; 541 } 542 if ((sist & (SIST1_STO << 8)) && need_reset == 0) { 543 /* selection time out, assume there's no device here */ 544 if (siop_cmd) { 545 siop_cmd->cmd_c.status = CMDST_DONE; 546 xs->error = XS_SELTIMEOUT; 547 freetarget = 1; 548 goto end; 549 } else { 550 printf("%s: selection timeout without " 551 "command\n", sc->sc_c.sc_dev.dv_xname); 552 need_reset = 1; 553 } 554 } 555 if (sist & SIST0_UDC) { 556 /* 557 * unexpected disconnect. Usually the target signals 558 * a fatal condition this way. Attempt to get sense. 559 */ 560 if (siop_cmd) { 561 siop_cmd->cmd_tables->status = 562 htole32(SCSI_CHECK); 563 goto end; 564 } 565 printf("%s: unexpected disconnect without " 566 "command\n", sc->sc_c.sc_dev.dv_xname); 567 goto reset; 568 } 569 if (sist & (SIST1_SBMC << 8)) { 570 /* SCSI bus mode change */ 571 if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) 572 goto reset; 573 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { 574 /* 575 * we have a script interrupt, it will 576 * restart the script. 577 */ 578 goto scintr; 579 } 580 /* 581 * else we have to restart it ourselve, at the 582 * interrupted instruction. 583 */ 584 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 585 SIOP_DSP, 586 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 587 SIOP_DSP) - 8); 588 return 1; 589 } 590 /* Else it's an unhandled exeption (for now). */ 591 printf("%s: unhandled scsi interrupt, sist=0x%x sstat1=0x%x " 592 "DSA=0x%x DSP=0x%x\n", sc->sc_c.sc_dev.dv_xname, sist, 593 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 594 SIOP_SSTAT1), 595 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 596 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 597 SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 598 if (siop_cmd) { 599 siop_cmd->cmd_c.status = CMDST_DONE; 600 xs->error = XS_SELTIMEOUT; 601 goto end; 602 } 603 need_reset = 1; 604 } 605 if (need_reset) { 606 reset: 607 /* fatal error, reset the bus */ 608 siop_resetbus(&sc->sc_c); 609 /* no table to flush here */ 610 return 1; 611 } 612 613 scintr: 614 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ 615 irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 616 SIOP_DSPS); 617 #ifdef SIOP_DEBUG_INTR 618 printf("script interrupt 0x%x\n", irqcode); 619 #endif 620 /* 621 * no command, or an inactive command is only valid for a 622 * reselect interrupt 623 */ 624 if ((irqcode & 0x80) == 0) { 625 if (siop_cmd == NULL) { 626 printf( 627 "%s: script interrupt (0x%x) with invalid DSA !!!\n", 628 sc->sc_c.sc_dev.dv_xname, irqcode); 629 goto reset; 630 } 631 if (siop_cmd->cmd_c.status != CMDST_ACTIVE) { 632 printf("%s: command with invalid status " 633 "(IRQ code 0x%x current status %d) !\n", 634 sc->sc_c.sc_dev.dv_xname, 635 irqcode, siop_cmd->cmd_c.status); 636 xs = NULL; 637 } 638 } 639 switch(irqcode) { 640 case A_int_err: 641 printf("error, DSP=0x%x\n", 642 (int)(bus_space_read_4(sc->sc_c.sc_rt, 643 sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 644 if (xs) { 645 xs->error = XS_SELTIMEOUT; 646 goto end; 647 } else { 648 goto reset; 649 } 650 case A_int_reseltarg: 651 printf("%s: reselect with invalid target\n", 652 sc->sc_c.sc_dev.dv_xname); 653 goto reset; 654 case A_int_resellun: 655 INCSTAT(siop_stat_intr_lunresel); 656 target = bus_space_read_1(sc->sc_c.sc_rt, 657 sc->sc_c.sc_rh, SIOP_SCRATCHA) & 0xf; 658 lun = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 659 SIOP_SCRATCHA + 1); 660 tag = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 661 SIOP_SCRATCHA + 2); 662 siop_target = 663 (struct siop_target *)sc->sc_c.targets[target]; 664 if (siop_target == NULL) { 665 printf("%s: reselect with invalid target %d\n", 666 sc->sc_c.sc_dev.dv_xname, target); 667 goto reset; 668 } 669 siop_lun = siop_target->siop_lun[lun]; 670 if (siop_lun == NULL) { 671 printf("%s: target %d reselect with invalid " 672 "lun %d\n", sc->sc_c.sc_dev.dv_xname, 673 target, lun); 674 goto reset; 675 } 676 if (siop_lun->siop_tag[tag].active == NULL) { 677 printf("%s: target %d lun %d tag %d reselect " 678 "without command\n", 679 sc->sc_c.sc_dev.dv_xname, 680 target, lun, tag); 681 goto reset; 682 } 683 siop_cmd = siop_lun->siop_tag[tag].active; 684 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 685 SIOP_DSP, siop_cmd->cmd_c.dsa + 686 sizeof(struct siop_common_xfer) + 687 Ent_ldsa_reload_dsa); 688 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 689 return 1; 690 case A_int_reseltag: 691 printf("%s: reselect with invalid tag\n", 692 sc->sc_c.sc_dev.dv_xname); 693 goto reset; 694 case A_int_msgin: 695 { 696 int msgin = bus_space_read_1(sc->sc_c.sc_rt, 697 sc->sc_c.sc_rh, SIOP_SFBR); 698 if (msgin == MSG_MESSAGE_REJECT) { 699 int msg, extmsg; 700 if (siop_cmd->cmd_tables->msg_out[0] & 0x80) { 701 /* 702 * message was part of a identify + 703 * something else. Identify shouldn't 704 * have been rejected. 705 */ 706 msg = 707 siop_cmd->cmd_tables->msg_out[1]; 708 extmsg = 709 siop_cmd->cmd_tables->msg_out[3]; 710 } else { 711 msg = siop_cmd->cmd_tables->msg_out[0]; 712 extmsg = 713 siop_cmd->cmd_tables->msg_out[2]; 714 } 715 if (msg == MSG_MESSAGE_REJECT) { 716 /* MSG_REJECT for a MSG_REJECT !*/ 717 if (xs) 718 scsipi_printaddr(xs->xs_periph); 719 else 720 printf("%s: ", 721 sc->sc_c.sc_dev.dv_xname); 722 printf("our reject message was " 723 "rejected\n"); 724 goto reset; 725 } 726 if (msg == MSG_EXTENDED && 727 extmsg == MSG_EXT_WDTR) { 728 /* WDTR rejected, initiate sync */ 729 if ((siop_target->target_c.flags & 730 TARF_SYNC) == 0) { 731 siop_target->target_c.status = 732 TARST_OK; 733 siop_update_xfer_mode(&sc->sc_c, 734 target); 735 /* no table to flush here */ 736 CALL_SCRIPT(Ent_msgin_ack); 737 return 1; 738 } 739 siop_target->target_c.status = 740 TARST_SYNC_NEG; 741 siop_sdtr_msg(&siop_cmd->cmd_c, 0, 742 sc->sc_c.st_minsync, 743 sc->sc_c.maxoff); 744 siop_table_sync(siop_cmd, 745 BUS_DMASYNC_PREREAD | 746 BUS_DMASYNC_PREWRITE); 747 CALL_SCRIPT(Ent_send_msgout); 748 return 1; 749 } else if (msg == MSG_EXTENDED && 750 extmsg == MSG_EXT_SDTR) { 751 /* sync rejected */ 752 siop_target->target_c.offset = 0; 753 siop_target->target_c.period = 0; 754 siop_target->target_c.status = TARST_OK; 755 siop_update_xfer_mode(&sc->sc_c, 756 target); 757 /* no table to flush here */ 758 CALL_SCRIPT(Ent_msgin_ack); 759 return 1; 760 } else if (msg == MSG_SIMPLE_Q_TAG || 761 msg == MSG_HEAD_OF_Q_TAG || 762 msg == MSG_ORDERED_Q_TAG) { 763 if (siop_handle_qtag_reject( 764 siop_cmd) == -1) 765 goto reset; 766 CALL_SCRIPT(Ent_msgin_ack); 767 return 1; 768 } 769 if (xs) 770 scsipi_printaddr(xs->xs_periph); 771 else 772 printf("%s: ", 773 sc->sc_c.sc_dev.dv_xname); 774 if (msg == MSG_EXTENDED) { 775 printf("scsi message reject, extended " 776 "message sent was 0x%x\n", extmsg); 777 } else { 778 printf("scsi message reject, message " 779 "sent was 0x%x\n", msg); 780 } 781 /* no table to flush here */ 782 CALL_SCRIPT(Ent_msgin_ack); 783 return 1; 784 } 785 if (xs) 786 scsipi_printaddr(xs->xs_periph); 787 else 788 printf("%s: ", sc->sc_c.sc_dev.dv_xname); 789 printf("unhandled message 0x%x\n", 790 siop_cmd->cmd_tables->msg_in[0]); 791 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 792 siop_cmd->cmd_tables->t_msgout.count= htole32(1); 793 siop_table_sync(siop_cmd, 794 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 795 CALL_SCRIPT(Ent_send_msgout); 796 return 1; 797 } 798 case A_int_extmsgin: 799 #ifdef SIOP_DEBUG_INTR 800 printf("extended message: msg 0x%x len %d\n", 801 siop_cmd->cmd_tables->msg_in[2], 802 siop_cmd->cmd_tables->msg_in[1]); 803 #endif 804 if (siop_cmd->cmd_tables->msg_in[1] > 805 sizeof(siop_cmd->cmd_tables->msg_in) - 2) 806 printf("%s: extended message too big (%d)\n", 807 sc->sc_c.sc_dev.dv_xname, 808 siop_cmd->cmd_tables->msg_in[1]); 809 siop_cmd->cmd_tables->t_extmsgdata.count = 810 htole32(siop_cmd->cmd_tables->msg_in[1] - 1); 811 siop_table_sync(siop_cmd, 812 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 813 CALL_SCRIPT(Ent_get_extmsgdata); 814 return 1; 815 case A_int_extmsgdata: 816 #ifdef SIOP_DEBUG_INTR 817 { 818 int i; 819 printf("extended message: 0x%x, data:", 820 siop_cmd->cmd_tables->msg_in[2]); 821 for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; 822 i++) 823 printf(" 0x%x", 824 siop_cmd->cmd_tables->msg_in[i]); 825 printf("\n"); 826 } 827 #endif 828 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 829 switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { 830 case SIOP_NEG_MSGOUT: 831 siop_update_scntl3(sc, 832 siop_cmd->cmd_c.siop_target); 833 siop_table_sync(siop_cmd, 834 BUS_DMASYNC_PREREAD | 835 BUS_DMASYNC_PREWRITE); 836 CALL_SCRIPT(Ent_send_msgout); 837 return(1); 838 case SIOP_NEG_ACK: 839 siop_update_scntl3(sc, 840 siop_cmd->cmd_c.siop_target); 841 CALL_SCRIPT(Ent_msgin_ack); 842 return(1); 843 default: 844 panic("invalid retval from " 845 "siop_wdtr_neg()"); 846 } 847 return(1); 848 } 849 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 850 switch (siop_sdtr_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 /* send a message reject */ 871 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 872 siop_cmd->cmd_tables->t_msgout.count = htole32(1); 873 siop_table_sync(siop_cmd, 874 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 875 CALL_SCRIPT(Ent_send_msgout); 876 return 1; 877 case A_int_disc: 878 INCSTAT(siop_stat_intr_sdp); 879 offset = bus_space_read_1(sc->sc_c.sc_rt, 880 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 881 #ifdef SIOP_DEBUG_DR 882 printf("disconnect offset %d\n", offset); 883 #endif 884 if (offset > SIOP_NSG) { 885 printf("%s: bad offset for disconnect (%d)\n", 886 sc->sc_c.sc_dev.dv_xname, offset); 887 goto reset; 888 } 889 /* 890 * offset == SIOP_NSG may be a valid condition if 891 * we get a sdp when the xfer is done. 892 * Don't call memmove in this case. 893 */ 894 if (offset < SIOP_NSG) { 895 memmove(&siop_cmd->cmd_tables->data[0], 896 &siop_cmd->cmd_tables->data[offset], 897 (SIOP_NSG - offset) * sizeof(scr_table_t)); 898 siop_table_sync(siop_cmd, 899 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 900 } 901 CALL_SCRIPT(Ent_script_sched); 902 return 1; 903 case A_int_resfail: 904 printf("reselect failed\n"); 905 CALL_SCRIPT(Ent_script_sched); 906 return 1; 907 case A_int_done: 908 if (xs == NULL) { 909 printf("%s: done without command, DSA=0x%lx\n", 910 sc->sc_c.sc_dev.dv_xname, 911 (u_long)siop_cmd->cmd_c.dsa); 912 siop_cmd->cmd_c.status = CMDST_FREE; 913 CALL_SCRIPT(Ent_script_sched); 914 return 1; 915 } 916 #ifdef SIOP_DEBUG_INTR 917 printf("done, DSA=0x%lx target id 0x%x last msg " 918 "in=0x%x status=0x%x\n", (u_long)siop_cmd->cmd_c.dsa, 919 le32toh(siop_cmd->cmd_tables->id), 920 siop_cmd->cmd_tables->msg_in[0], 921 le32toh(siop_cmd->cmd_tables->status)); 922 #endif 923 INCSTAT(siop_stat_intr_done); 924 siop_cmd->cmd_c.status = CMDST_DONE; 925 goto end; 926 default: 927 printf("unknown irqcode %x\n", irqcode); 928 if (xs) { 929 xs->error = XS_SELTIMEOUT; 930 goto end; 931 } 932 goto reset; 933 } 934 return 1; 935 } 936 /* We just should't get there */ 937 panic("siop_intr: I shouldn't be there !"); 938 return 1; 939 end: 940 /* 941 * restart the script now if command completed properly 942 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 943 * queue 944 */ 945 xs->status = le32toh(siop_cmd->cmd_tables->status); 946 if (xs->status == SCSI_OK) 947 CALL_SCRIPT(Ent_script_sched); 948 else 949 restart = 1; 950 siop_lun->siop_tag[tag].active = NULL; 951 siop_scsicmd_end(siop_cmd); 952 if (freetarget && siop_target->target_c.status == TARST_PROBING) 953 siop_del_dev(sc, target, lun); 954 if (restart) 955 CALL_SCRIPT(Ent_script_sched); 956 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 957 /* a command terminated, so we have free slots now */ 958 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 959 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 960 } 961 962 return 1; 963 } 964 965 void 966 siop_scsicmd_end(siop_cmd) 967 struct siop_cmd *siop_cmd; 968 { 969 struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; 970 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 971 972 switch(xs->status) { 973 case SCSI_OK: 974 xs->error = XS_NOERROR; 975 break; 976 case SCSI_BUSY: 977 xs->error = XS_BUSY; 978 break; 979 case SCSI_CHECK: 980 xs->error = XS_BUSY; 981 /* remove commands in the queue and scheduler */ 982 siop_unqueue(sc, xs->xs_periph->periph_target, 983 xs->xs_periph->periph_lun); 984 break; 985 case SCSI_QUEUE_FULL: 986 INCSTAT(siop_stat_intr_qfull); 987 #ifdef SIOP_DEBUG 988 printf("%s:%d:%d: queue full (tag %d)\n", 989 sc->sc_c.sc_dev.dv_xname, 990 xs->xs_periph->periph_target, 991 xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); 992 #endif 993 xs->error = XS_BUSY; 994 break; 995 case SCSI_SIOP_NOCHECK: 996 /* 997 * don't check status, xs->error is already valid 998 */ 999 break; 1000 case SCSI_SIOP_NOSTATUS: 1001 /* 1002 * the status byte was not updated, cmd was 1003 * aborted 1004 */ 1005 xs->error = XS_SELTIMEOUT; 1006 break; 1007 default: 1008 scsipi_printaddr(xs->xs_periph); 1009 printf("invalid status code %d\n", xs->status); 1010 xs->error = XS_DRIVER_STUFFUP; 1011 } 1012 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1013 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, 0, 1014 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1015 (xs->xs_control & XS_CTL_DATA_IN) ? 1016 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1017 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data); 1018 } 1019 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); 1020 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1021 siop_cmd->cmd_c.status = CMDST_FREE; 1022 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1023 xs->resid = 0; 1024 scsipi_done (xs); 1025 } 1026 1027 void 1028 siop_unqueue(sc, target, lun) 1029 struct siop_softc *sc; 1030 int target; 1031 int lun; 1032 { 1033 int slot, tag; 1034 struct siop_cmd *siop_cmd; 1035 struct siop_lun *siop_lun = 1036 ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; 1037 1038 /* first make sure to read valid data */ 1039 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1040 1041 for (tag = 1; tag < SIOP_NTAG; tag++) { 1042 /* look for commands in the scheduler, not yet started */ 1043 if (siop_lun->siop_tag[tag].active == NULL) 1044 continue; 1045 siop_cmd = siop_lun->siop_tag[tag].active; 1046 for (slot = 0; slot <= sc->sc_currschedslot; slot++) { 1047 if (siop_script_read(sc, 1048 (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == 1049 siop_cmd->cmd_c.dsa + 1050 sizeof(struct siop_common_xfer) + 1051 Ent_ldsa_select) 1052 break; 1053 } 1054 if (slot > sc->sc_currschedslot) 1055 continue; /* didn't find it */ 1056 if (siop_script_read(sc, 1057 (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) 1058 continue; /* already started */ 1059 /* clear the slot */ 1060 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1061 0x80000000); 1062 /* ask to requeue */ 1063 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1064 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1065 siop_lun->siop_tag[tag].active = NULL; 1066 siop_scsicmd_end(siop_cmd); 1067 } 1068 /* update sc_currschedslot */ 1069 sc->sc_currschedslot = 0; 1070 for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { 1071 if (siop_script_read(sc, 1072 (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) 1073 sc->sc_currschedslot = slot; 1074 } 1075 } 1076 1077 /* 1078 * handle a rejected queue tag message: the command will run untagged, 1079 * has to adjust the reselect script. 1080 */ 1081 int 1082 siop_handle_qtag_reject(siop_cmd) 1083 struct siop_cmd *siop_cmd; 1084 { 1085 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1086 int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1087 int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1088 int tag = siop_cmd->cmd_tables->msg_out[2]; 1089 struct siop_lun *siop_lun = 1090 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1091 1092 #ifdef SIOP_DEBUG 1093 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1094 sc->sc_c.sc_dev.dv_xname, target, lun, tag, siop_cmd->cmd_c.tag, 1095 siop_cmd->cmd_c.status); 1096 #endif 1097 1098 if (siop_lun->siop_tag[0].active != NULL) { 1099 printf("%s: untagged command already running for target %d " 1100 "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, 1101 target, lun, siop_lun->siop_tag[0].active->cmd_c.status); 1102 return -1; 1103 } 1104 /* clear tag slot */ 1105 siop_lun->siop_tag[tag].active = NULL; 1106 /* add command to non-tagged slot */ 1107 siop_lun->siop_tag[0].active = siop_cmd; 1108 siop_cmd->cmd_c.tag = 0; 1109 /* adjust reselect script if there is one */ 1110 if (siop_lun->siop_tag[0].reseloff > 0) { 1111 siop_script_write(sc, 1112 siop_lun->siop_tag[0].reseloff + 1, 1113 siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + 1114 Ent_ldsa_reload_dsa); 1115 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1116 } 1117 return 0; 1118 } 1119 1120 /* 1121 * handle a bus reset: reset chip, unqueue all active commands, free all 1122 * target struct and report loosage to upper layer. 1123 * As the upper layer may requeue immediatly we have to first store 1124 * all active commands in a temporary queue. 1125 */ 1126 void 1127 siop_handle_reset(sc) 1128 struct siop_softc *sc; 1129 { 1130 struct siop_cmd *siop_cmd; 1131 struct siop_lun *siop_lun; 1132 int target, lun, tag; 1133 /* 1134 * scsi bus reset. reset the chip and restart 1135 * the queue. Need to clean up all active commands 1136 */ 1137 printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); 1138 /* stop, reset and restart the chip */ 1139 siop_reset(sc); 1140 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1141 /* chip has been reset, all slots are free now */ 1142 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1143 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1144 } 1145 /* 1146 * Process all commands: first commmands being executed 1147 */ 1148 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1149 target++) { 1150 if (sc->sc_c.targets[target] == NULL) 1151 continue; 1152 for (lun = 0; lun < 8; lun++) { 1153 struct siop_target *siop_target = 1154 (struct siop_target *)sc->sc_c.targets[target]; 1155 siop_lun = siop_target->siop_lun[lun]; 1156 if (siop_lun == NULL) 1157 continue; 1158 for (tag = 0; tag < 1159 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1160 SIOP_NTAG : 1); 1161 tag++) { 1162 siop_cmd = siop_lun->siop_tag[tag].active; 1163 if (siop_cmd == NULL) 1164 continue; 1165 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1166 printf("command with tag id %d reset\n", tag); 1167 siop_cmd->cmd_c.xs->error = 1168 (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1169 XS_TIMEOUT : XS_RESET; 1170 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1171 siop_lun->siop_tag[tag].active = NULL; 1172 siop_cmd->cmd_c.status = CMDST_DONE; 1173 siop_scsicmd_end(siop_cmd); 1174 } 1175 } 1176 sc->sc_c.targets[target]->status = TARST_ASYNC; 1177 sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; 1178 sc->sc_c.targets[target]->period = 1179 sc->sc_c.targets[target]->offset = 0; 1180 siop_update_xfer_mode(&sc->sc_c, target); 1181 } 1182 1183 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1184 } 1185 1186 void 1187 siop_scsipi_request(chan, req, arg) 1188 struct scsipi_channel *chan; 1189 scsipi_adapter_req_t req; 1190 void *arg; 1191 { 1192 struct scsipi_xfer *xs; 1193 struct scsipi_periph *periph; 1194 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1195 struct siop_cmd *siop_cmd; 1196 struct siop_target *siop_target; 1197 int s, error, i; 1198 int target; 1199 int lun; 1200 1201 switch (req) { 1202 case ADAPTER_REQ_RUN_XFER: 1203 xs = arg; 1204 periph = xs->xs_periph; 1205 target = periph->periph_target; 1206 lun = periph->periph_lun; 1207 1208 s = splbio(); 1209 #ifdef SIOP_DEBUG_SCHED 1210 printf("starting cmd for %d:%d\n", target, lun); 1211 #endif 1212 siop_cmd = TAILQ_FIRST(&sc->free_list); 1213 if (siop_cmd == NULL) { 1214 xs->error = XS_RESOURCE_SHORTAGE; 1215 scsipi_done(xs); 1216 splx(s); 1217 return; 1218 } 1219 TAILQ_REMOVE(&sc->free_list, siop_cmd, next); 1220 #ifdef DIAGNOSTIC 1221 if (siop_cmd->cmd_c.status != CMDST_FREE) 1222 panic("siop_scsicmd: new cmd not free"); 1223 #endif 1224 siop_target = (struct siop_target*)sc->sc_c.targets[target]; 1225 if (siop_target == NULL) { 1226 #ifdef SIOP_DEBUG 1227 printf("%s: alloc siop_target for target %d\n", 1228 sc->sc_c.sc_dev.dv_xname, target); 1229 #endif 1230 sc->sc_c.targets[target] = 1231 malloc(sizeof(struct siop_target), 1232 M_DEVBUF, M_NOWAIT); 1233 if (sc->sc_c.targets[target] == NULL) { 1234 printf("%s: can't malloc memory for " 1235 "target %d\n", sc->sc_c.sc_dev.dv_xname, 1236 target); 1237 xs->error = XS_RESOURCE_SHORTAGE; 1238 scsipi_done(xs); 1239 splx(s); 1240 return; 1241 } 1242 siop_target = 1243 (struct siop_target*)sc->sc_c.targets[target]; 1244 siop_target->target_c.status = TARST_PROBING; 1245 siop_target->target_c.flags = 0; 1246 siop_target->target_c.id = 1247 sc->sc_c.clock_div << 24; /* scntl3 */ 1248 siop_target->target_c.id |= target << 16; /* id */ 1249 /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1250 1251 /* get a lun switch script */ 1252 siop_target->lunsw = siop_get_lunsw(sc); 1253 if (siop_target->lunsw == NULL) { 1254 printf("%s: can't alloc lunsw for target %d\n", 1255 sc->sc_c.sc_dev.dv_xname, target); 1256 xs->error = XS_RESOURCE_SHORTAGE; 1257 scsipi_done(xs); 1258 splx(s); 1259 return; 1260 } 1261 for (i=0; i < 8; i++) 1262 siop_target->siop_lun[i] = NULL; 1263 siop_add_reselsw(sc, target); 1264 } 1265 if (siop_target->siop_lun[lun] == NULL) { 1266 siop_target->siop_lun[lun] = 1267 malloc(sizeof(struct siop_lun), M_DEVBUF, 1268 M_NOWAIT|M_ZERO); 1269 if (siop_target->siop_lun[lun] == NULL) { 1270 printf("%s: can't alloc siop_lun for " 1271 "target %d lun %d\n", 1272 sc->sc_c.sc_dev.dv_xname, target, lun); 1273 xs->error = XS_RESOURCE_SHORTAGE; 1274 scsipi_done(xs); 1275 splx(s); 1276 return; 1277 } 1278 } 1279 siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1280 siop_cmd->cmd_c.xs = xs; 1281 siop_cmd->cmd_c.flags = 0; 1282 siop_cmd->cmd_c.status = CMDST_READY; 1283 1284 /* load the DMA maps */ 1285 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1286 siop_cmd->cmd_c.dmamap_cmd, 1287 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1288 if (error) { 1289 printf("%s: unable to load cmd DMA map: %d\n", 1290 sc->sc_c.sc_dev.dv_xname, error); 1291 xs->error = XS_DRIVER_STUFFUP; 1292 scsipi_done(xs); 1293 splx(s); 1294 return; 1295 } 1296 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1297 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1298 siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1299 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1300 ((xs->xs_control & XS_CTL_DATA_IN) ? 1301 BUS_DMA_READ : BUS_DMA_WRITE)); 1302 if (error) { 1303 printf("%s: unable to load cmd DMA map: %d", 1304 sc->sc_c.sc_dev.dv_xname, error); 1305 xs->error = XS_DRIVER_STUFFUP; 1306 scsipi_done(xs); 1307 bus_dmamap_unload(sc->sc_c.sc_dmat, 1308 siop_cmd->cmd_c.dmamap_cmd); 1309 splx(s); 1310 return; 1311 } 1312 bus_dmamap_sync(sc->sc_c.sc_dmat, 1313 siop_cmd->cmd_c.dmamap_data, 0, 1314 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1315 (xs->xs_control & XS_CTL_DATA_IN) ? 1316 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1317 } 1318 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, 1319 siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1320 BUS_DMASYNC_PREWRITE); 1321 1322 if (xs->xs_tag_type) { 1323 /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ 1324 siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; 1325 } else { 1326 siop_cmd->cmd_c.tag = 0; 1327 } 1328 siop_setuptables(&siop_cmd->cmd_c); 1329 siop_table_sync(siop_cmd, 1330 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1331 siop_start(sc, siop_cmd); 1332 if (xs->xs_control & XS_CTL_POLL) { 1333 /* poll for command completion */ 1334 while ((xs->xs_status & XS_STS_DONE) == 0) { 1335 delay(1000); 1336 siop_intr(sc); 1337 } 1338 } 1339 splx(s); 1340 return; 1341 1342 case ADAPTER_REQ_GROW_RESOURCES: 1343 #ifdef SIOP_DEBUG 1344 printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, 1345 sc->sc_c.sc_adapt.adapt_openings); 1346 #endif 1347 siop_morecbd(sc); 1348 return; 1349 1350 case ADAPTER_REQ_SET_XFER_MODE: 1351 { 1352 struct scsipi_xfer_mode *xm = arg; 1353 if (sc->sc_c.targets[xm->xm_target] == NULL) 1354 return; 1355 s = splbio(); 1356 if (xm->xm_mode & PERIPH_CAP_TQING) 1357 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1358 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1359 (sc->sc_c.features & SF_BUS_WIDE)) 1360 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1361 if (xm->xm_mode & PERIPH_CAP_SYNC) 1362 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1363 if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || 1364 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1365 sc->sc_c.targets[xm->xm_target]->status = 1366 TARST_ASYNC; 1367 1368 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1369 if (scsipi_lookup_periph(chan, 1370 xm->xm_target, lun) != NULL) { 1371 /* allocate a lun sw entry for this device */ 1372 siop_add_dev(sc, xm->xm_target, lun); 1373 } 1374 } 1375 1376 splx(s); 1377 } 1378 } 1379 } 1380 1381 static void 1382 siop_start(sc, siop_cmd) 1383 struct siop_softc *sc; 1384 struct siop_cmd *siop_cmd; 1385 { 1386 struct siop_lun *siop_lun; 1387 struct siop_xfer *siop_xfer; 1388 u_int32_t dsa; 1389 int timeout; 1390 int target, lun, slot; 1391 1392 /* 1393 * first make sure to read valid data 1394 */ 1395 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1396 1397 /* 1398 * The queue management here is a bit tricky: the script always looks 1399 * at the slot from first to last, so if we always use the first 1400 * free slot commands can stay at the tail of the queue ~forever. 1401 * The algorithm used here is to restart from the head when we know 1402 * that the queue is empty, and only add commands after the last one. 1403 * When we're at the end of the queue wait for the script to clear it. 1404 * The best thing to do here would be to implement a circular queue, 1405 * but using only 53c720 features this can be "interesting". 1406 * A mid-way solution could be to implement 2 queues and swap orders. 1407 */ 1408 slot = sc->sc_currschedslot; 1409 /* 1410 * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is 1411 * free. As this is the last used slot, all previous slots are free, 1412 * we can restart from 0. 1413 */ 1414 if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == 1415 0x80000000) { 1416 slot = sc->sc_currschedslot = 0; 1417 } else { 1418 slot++; 1419 } 1420 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1421 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1422 siop_lun = 1423 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1424 /* if non-tagged command active, panic: this shouldn't happen */ 1425 if (siop_lun->siop_tag[0].active != NULL) { 1426 panic("siop_start: tagged cmd while untagged running"); 1427 } 1428 #ifdef DIAGNOSTIC 1429 /* sanity check the tag if needed */ 1430 if (siop_cmd->cmd_c.flags & CMDFL_TAG) { 1431 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) 1432 panic("siop_start: tag not free"); 1433 if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { 1434 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1435 printf(": tag id %d\n", siop_cmd->cmd_c.tag); 1436 panic("siop_start: invalid tag id"); 1437 } 1438 } 1439 #endif 1440 /* 1441 * find a free scheduler slot and load it. 1442 */ 1443 for (; slot < SIOP_NSLOTS; slot++) { 1444 /* 1445 * If cmd if 0x80000000 the slot is free 1446 */ 1447 if (siop_script_read(sc, 1448 (Ent_script_sched_slot0 / 4) + slot * 2) == 1449 0x80000000) 1450 break; 1451 } 1452 if (slot == SIOP_NSLOTS) { 1453 /* 1454 * no more free slot, no need to continue. freeze the queue 1455 * and requeue this command. 1456 */ 1457 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1458 sc->sc_flags |= SCF_CHAN_NOSLOT; 1459 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1460 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1461 siop_scsicmd_end(siop_cmd); 1462 return; 1463 } 1464 #ifdef SIOP_DEBUG_SCHED 1465 printf("using slot %d for DSA 0x%lx\n", slot, 1466 (u_long)siop_cmd->cmd_c.dsa); 1467 #endif 1468 /* mark command as active */ 1469 if (siop_cmd->cmd_c.status == CMDST_READY) 1470 siop_cmd->cmd_c.status = CMDST_ACTIVE; 1471 else 1472 panic("siop_start: bad status"); 1473 siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; 1474 /* patch scripts with DSA addr */ 1475 dsa = siop_cmd->cmd_c.dsa; 1476 /* first reselect switch, if we have an entry */ 1477 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) 1478 siop_script_write(sc, 1479 siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, 1480 dsa + sizeof(struct siop_common_xfer) + 1481 Ent_ldsa_reload_dsa); 1482 /* CMD script: MOVE MEMORY addr */ 1483 siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; 1484 siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = 1485 htole32(sc->sc_c.sc_scriptaddr + Ent_script_sched_slot0 + slot * 8); 1486 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1487 /* scheduler slot: JUMP ldsa_select */ 1488 siop_script_write(sc, 1489 (Ent_script_sched_slot0 / 4) + slot * 2 + 1, 1490 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); 1491 /* handle timeout */ 1492 if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1493 /* start exire timer */ 1494 timeout = mstohz(siop_cmd->cmd_c.xs->timeout); 1495 if (timeout == 0) 1496 timeout = 1; 1497 callout_reset( &siop_cmd->cmd_c.xs->xs_callout, 1498 timeout, siop_timeout, siop_cmd); 1499 } 1500 /* 1501 * Change JUMP cmd so that this slot will be handled 1502 */ 1503 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1504 0x80080000); 1505 sc->sc_currschedslot = slot; 1506 1507 /* make sure SCRIPT processor will read valid data */ 1508 siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1509 /* Signal script it has some work to do */ 1510 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1511 SIOP_ISTAT, ISTAT_SIGP); 1512 /* and wait for IRQ */ 1513 return; 1514 } 1515 1516 void 1517 siop_timeout(v) 1518 void *v; 1519 { 1520 struct siop_cmd *siop_cmd = v; 1521 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1522 int s; 1523 1524 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1525 printf("command timeout\n"); 1526 1527 s = splbio(); 1528 /* reset the scsi bus */ 1529 siop_resetbus(&sc->sc_c); 1530 1531 /* deactivate callout */ 1532 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1533 /* mark command as being timed out; siop_intr will handle it */ 1534 /* 1535 * mark command has being timed out and just return; 1536 * the bus reset will generate an interrupt, 1537 * it will be handled in siop_intr() 1538 */ 1539 siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1540 splx(s); 1541 return; 1542 1543 } 1544 1545 void 1546 siop_dump_script(sc) 1547 struct siop_softc *sc; 1548 { 1549 int i; 1550 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1551 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1552 le32toh(sc->sc_c.sc_script[i]), 1553 le32toh(sc->sc_c.sc_script[i+1])); 1554 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1555 0xc0000000) { 1556 i++; 1557 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); 1558 } 1559 printf("\n"); 1560 } 1561 } 1562 1563 void 1564 siop_morecbd(sc) 1565 struct siop_softc *sc; 1566 { 1567 int error, i, j, s; 1568 bus_dma_segment_t seg; 1569 int rseg; 1570 struct siop_cbd *newcbd; 1571 struct siop_xfer *xfer; 1572 bus_addr_t dsa; 1573 u_int32_t *scr; 1574 1575 /* allocate a new list head */ 1576 newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1577 if (newcbd == NULL) { 1578 printf("%s: can't allocate memory for command descriptors " 1579 "head\n", sc->sc_c.sc_dev.dv_xname); 1580 return; 1581 } 1582 1583 /* allocate cmd list */ 1584 newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, 1585 M_DEVBUF, M_NOWAIT|M_ZERO); 1586 if (newcbd->cmds == NULL) { 1587 printf("%s: can't allocate memory for command descriptors\n", 1588 sc->sc_c.sc_dev.dv_xname); 1589 goto bad3; 1590 } 1591 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1592 1, &rseg, BUS_DMA_NOWAIT); 1593 if (error) { 1594 printf("%s: unable to allocate cbd DMA memory, error = %d\n", 1595 sc->sc_c.sc_dev.dv_xname, error); 1596 goto bad2; 1597 } 1598 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1599 (caddr_t *)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1600 if (error) { 1601 printf("%s: unable to map cbd DMA memory, error = %d\n", 1602 sc->sc_c.sc_dev.dv_xname, error); 1603 goto bad2; 1604 } 1605 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1606 BUS_DMA_NOWAIT, &newcbd->xferdma); 1607 if (error) { 1608 printf("%s: unable to create cbd DMA map, error = %d\n", 1609 sc->sc_c.sc_dev.dv_xname, error); 1610 goto bad1; 1611 } 1612 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, newcbd->xfers, 1613 PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1614 if (error) { 1615 printf("%s: unable to load cbd DMA map, error = %d\n", 1616 sc->sc_c.sc_dev.dv_xname, error); 1617 goto bad0; 1618 } 1619 #ifdef DEBUG 1620 printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, 1621 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1622 #endif 1623 for (i = 0; i < SIOP_NCMDPB; i++) { 1624 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1625 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1626 &newcbd->cmds[i].cmd_c.dmamap_data); 1627 if (error) { 1628 printf("%s: unable to create data DMA map for cbd: " 1629 "error %d\n", 1630 sc->sc_c.sc_dev.dv_xname, error); 1631 goto bad0; 1632 } 1633 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1634 sizeof(struct scsipi_generic), 1, 1635 sizeof(struct scsipi_generic), 0, 1636 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1637 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1638 if (error) { 1639 printf("%s: unable to create cmd DMA map for cbd %d\n", 1640 sc->sc_c.sc_dev.dv_xname, error); 1641 goto bad0; 1642 } 1643 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1644 newcbd->cmds[i].siop_cbdp = newcbd; 1645 xfer = &newcbd->xfers[i]; 1646 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1647 memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); 1648 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1649 i * sizeof(struct siop_xfer); 1650 newcbd->cmds[i].cmd_c.dsa = dsa; 1651 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1652 xfer->siop_tables.t_msgout.count= htole32(1); 1653 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1654 xfer->siop_tables.t_msgin.count= htole32(1); 1655 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1656 offsetof(struct siop_common_xfer, msg_in)); 1657 xfer->siop_tables.t_extmsgin.count= htole32(2); 1658 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1659 offsetof(struct siop_common_xfer, msg_in) + 1); 1660 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1661 offsetof(struct siop_common_xfer, msg_in) + 3); 1662 xfer->siop_tables.t_status.count= htole32(1); 1663 xfer->siop_tables.t_status.addr = htole32(dsa + 1664 offsetof(struct siop_common_xfer, status)); 1665 /* The select/reselect script */ 1666 scr = &xfer->resel[0]; 1667 for (j = 0; j < sizeof(load_dsa) / sizeof(load_dsa[0]); j++) 1668 scr[j] = htole32(load_dsa[j]); 1669 /* 1670 * 0x78000000 is a 'move data8 to reg'. data8 is the second 1671 * octet, reg offset is the third. 1672 */ 1673 scr[Ent_rdsa0 / 4] = 1674 htole32(0x78100000 | ((dsa & 0x000000ff) << 8)); 1675 scr[Ent_rdsa1 / 4] = 1676 htole32(0x78110000 | ( dsa & 0x0000ff00 )); 1677 scr[Ent_rdsa2 / 4] = 1678 htole32(0x78120000 | ((dsa & 0x00ff0000) >> 8)); 1679 scr[Ent_rdsa3 / 4] = 1680 htole32(0x78130000 | ((dsa & 0xff000000) >> 16)); 1681 scr[E_ldsa_abs_reselected_Used[0]] = 1682 htole32(sc->sc_c.sc_scriptaddr + Ent_reselected); 1683 scr[E_ldsa_abs_reselect_Used[0]] = 1684 htole32(sc->sc_c.sc_scriptaddr + Ent_reselect); 1685 scr[E_ldsa_abs_selected_Used[0]] = 1686 htole32(sc->sc_c.sc_scriptaddr + Ent_selected); 1687 scr[E_ldsa_abs_data_Used[0]] = 1688 htole32(dsa + sizeof(struct siop_common_xfer) + 1689 Ent_ldsa_data); 1690 /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ 1691 scr[Ent_ldsa_data / 4] = htole32(0x80000000); 1692 s = splbio(); 1693 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1694 splx(s); 1695 #ifdef SIOP_DEBUG 1696 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1697 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1698 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1699 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1700 #endif 1701 } 1702 s = splbio(); 1703 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1704 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1705 splx(s); 1706 return; 1707 bad0: 1708 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1709 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1710 bad1: 1711 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1712 bad2: 1713 free(newcbd->cmds, M_DEVBUF); 1714 bad3: 1715 free(newcbd, M_DEVBUF); 1716 return; 1717 } 1718 1719 struct siop_lunsw * 1720 siop_get_lunsw(sc) 1721 struct siop_softc *sc; 1722 { 1723 struct siop_lunsw *lunsw; 1724 int i; 1725 1726 if (sc->script_free_lo + (sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1727 sc->script_free_hi) 1728 return NULL; 1729 lunsw = TAILQ_FIRST(&sc->lunsw_list); 1730 if (lunsw != NULL) { 1731 #ifdef SIOP_DEBUG 1732 printf("siop_get_lunsw got lunsw at offset %d\n", 1733 lunsw->lunsw_off); 1734 #endif 1735 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 1736 return lunsw; 1737 } 1738 lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); 1739 if (lunsw == NULL) 1740 return NULL; 1741 #ifdef SIOP_DEBUG 1742 printf("allocating lunsw at offset %d\n", sc->script_free_lo); 1743 #endif 1744 if (sc->sc_c.features & SF_CHIP_RAM) { 1745 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1746 sc->script_free_lo * 4, lun_switch, 1747 sizeof(lun_switch) / sizeof(lun_switch[0])); 1748 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1749 (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, 1750 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1751 } else { 1752 for (i = 0; i < sizeof(lun_switch) / sizeof(lun_switch[0]); 1753 i++) 1754 sc->sc_c.sc_script[sc->script_free_lo + i] = 1755 htole32(lun_switch[i]); 1756 sc->sc_c.sc_script[ 1757 sc->script_free_lo + E_abs_lunsw_return_Used[0]] = 1758 htole32(sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1759 } 1760 lunsw->lunsw_off = sc->script_free_lo; 1761 lunsw->lunsw_size = sizeof(lun_switch) / sizeof(lun_switch[0]); 1762 sc->script_free_lo += lunsw->lunsw_size; 1763 siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1764 return lunsw; 1765 } 1766 1767 void 1768 siop_add_reselsw(sc, target) 1769 struct siop_softc *sc; 1770 int target; 1771 { 1772 int i, j; 1773 struct siop_target *siop_target; 1774 struct siop_lun *siop_lun; 1775 1776 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1777 /* 1778 * add an entry to resel switch 1779 */ 1780 siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); 1781 for (i = 0; i < 15; i++) { 1782 siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; 1783 if ((siop_script_read(sc, siop_target->reseloff) & 0xff) 1784 == 0xff) { /* it's free */ 1785 #ifdef SIOP_DEBUG 1786 printf("siop: target %d slot %d offset %d\n", 1787 target, i, siop_target->reseloff); 1788 #endif 1789 /* JUMP abs_foo, IF target | 0x80; */ 1790 siop_script_write(sc, siop_target->reseloff, 1791 0x800c0080 | target); 1792 siop_script_write(sc, siop_target->reseloff + 1, 1793 sc->sc_c.sc_scriptaddr + 1794 siop_target->lunsw->lunsw_off * 4 + 1795 Ent_lun_switch_entry); 1796 break; 1797 } 1798 } 1799 if (i == 15) /* no free slot, shouldn't happen */ 1800 panic("siop: resel switch full"); 1801 1802 sc->sc_ntargets++; 1803 for (i = 0; i < 8; i++) { 1804 siop_lun = siop_target->siop_lun[i]; 1805 if (siop_lun == NULL) 1806 continue; 1807 if (siop_lun->reseloff > 0) { 1808 siop_lun->reseloff = 0; 1809 for (j = 0; j < SIOP_NTAG; j++) 1810 siop_lun->siop_tag[j].reseloff = 0; 1811 siop_add_dev(sc, target, i); 1812 } 1813 } 1814 siop_update_scntl3(sc, sc->sc_c.targets[target]); 1815 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1816 } 1817 1818 void 1819 siop_update_scntl3(sc, _siop_target) 1820 struct siop_softc *sc; 1821 struct siop_common_target *_siop_target; 1822 { 1823 struct siop_target *siop_target = (struct siop_target *)_siop_target; 1824 /* MOVE target->id >> 24 TO SCNTL3 */ 1825 siop_script_write(sc, 1826 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), 1827 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); 1828 /* MOVE target->id >> 8 TO SXFER */ 1829 siop_script_write(sc, 1830 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, 1831 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); 1832 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1833 } 1834 1835 void 1836 siop_add_dev(sc, target, lun) 1837 struct siop_softc *sc; 1838 int target; 1839 int lun; 1840 { 1841 struct siop_lunsw *lunsw; 1842 struct siop_target *siop_target = 1843 (struct siop_target *)sc->sc_c.targets[target]; 1844 struct siop_lun *siop_lun = siop_target->siop_lun[lun]; 1845 int i, ntargets; 1846 1847 if (siop_lun->reseloff > 0) 1848 return; 1849 lunsw = siop_target->lunsw; 1850 if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { 1851 /* 1852 * can't extend this slot. Probably not worth trying to deal 1853 * with this case 1854 */ 1855 #ifdef DEBUG 1856 printf("%s:%d:%d: can't allocate a lun sw slot\n", 1857 sc->sc_c.sc_dev.dv_xname, target, lun); 1858 #endif 1859 return; 1860 } 1861 /* count how many free targets we still have to probe */ 1862 ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; 1863 1864 /* 1865 * we need 8 bytes for the lun sw additionnal entry, and 1866 * eventually sizeof(tag_switch) for the tag switch entry. 1867 * Keep enough free space for the free targets that could be 1868 * probed later. 1869 */ 1870 if (sc->script_free_lo + 2 + 1871 (ntargets * sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1872 ((siop_target->target_c.flags & TARF_TAG) ? 1873 sc->script_free_hi - (sizeof(tag_switch) / sizeof(tag_switch[0])) : 1874 sc->script_free_hi)) { 1875 /* 1876 * not enough space, probably not worth dealing with it. 1877 * We can hold 13 tagged-queuing capable devices in the 4k RAM. 1878 */ 1879 #ifdef DEBUG 1880 printf("%s:%d:%d: not enough memory for a lun sw slot\n", 1881 sc->sc_c.sc_dev.dv_xname, target, lun); 1882 #endif 1883 return; 1884 } 1885 #ifdef SIOP_DEBUG 1886 printf("%s:%d:%d: allocate lun sw entry\n", 1887 sc->sc_c.sc_dev.dv_xname, target, lun); 1888 #endif 1889 /* INT int_resellun */ 1890 siop_script_write(sc, sc->script_free_lo, 0x98080000); 1891 siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); 1892 /* Now the slot entry: JUMP abs_foo, IF lun */ 1893 siop_script_write(sc, sc->script_free_lo - 2, 1894 0x800c0000 | lun); 1895 siop_script_write(sc, sc->script_free_lo - 1, 0); 1896 siop_lun->reseloff = sc->script_free_lo - 2; 1897 lunsw->lunsw_size += 2; 1898 sc->script_free_lo += 2; 1899 if (siop_target->target_c.flags & TARF_TAG) { 1900 /* we need a tag switch */ 1901 sc->script_free_hi -= 1902 sizeof(tag_switch) / sizeof(tag_switch[0]); 1903 if (sc->sc_c.features & SF_CHIP_RAM) { 1904 bus_space_write_region_4(sc->sc_c.sc_ramt, 1905 sc->sc_c.sc_ramh, 1906 sc->script_free_hi * 4, tag_switch, 1907 sizeof(tag_switch) / sizeof(tag_switch[0])); 1908 } else { 1909 for(i = 0; 1910 i < sizeof(tag_switch) / sizeof(tag_switch[0]); 1911 i++) { 1912 sc->sc_c.sc_script[sc->script_free_hi + i] = 1913 htole32(tag_switch[i]); 1914 } 1915 } 1916 siop_script_write(sc, 1917 siop_lun->reseloff + 1, 1918 sc->sc_c.sc_scriptaddr + sc->script_free_hi * 4 + 1919 Ent_tag_switch_entry); 1920 1921 for (i = 0; i < SIOP_NTAG; i++) { 1922 siop_lun->siop_tag[i].reseloff = 1923 sc->script_free_hi + (Ent_resel_tag0 / 4) + i * 2; 1924 } 1925 } else { 1926 /* non-tag case; just work with the lun switch */ 1927 siop_lun->siop_tag[0].reseloff = 1928 siop_target->siop_lun[lun]->reseloff; 1929 } 1930 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1931 } 1932 1933 void 1934 siop_del_dev(sc, target, lun) 1935 struct siop_softc *sc; 1936 int target; 1937 int lun; 1938 { 1939 int i; 1940 struct siop_target *siop_target; 1941 #ifdef SIOP_DEBUG 1942 printf("%s:%d:%d: free lun sw entry\n", 1943 sc->sc_c.sc_dev.dv_xname, target, lun); 1944 #endif 1945 if (sc->sc_c.targets[target] == NULL) 1946 return; 1947 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1948 free(siop_target->siop_lun[lun], M_DEVBUF); 1949 siop_target->siop_lun[lun] = NULL; 1950 /* XXX compact sw entry too ? */ 1951 /* check if we can free the whole target */ 1952 for (i = 0; i < 8; i++) { 1953 if (siop_target->siop_lun[i] != NULL) 1954 return; 1955 } 1956 #ifdef SIOP_DEBUG 1957 printf("%s: free siop_target for target %d lun %d lunsw offset %d\n", 1958 sc->sc_c.sc_dev.dv_xname, target, lun, 1959 sc->sc_c.targets[target]->lunsw->lunsw_off); 1960 #endif 1961 /* 1962 * nothing here, free the target struct and resel 1963 * switch entry 1964 */ 1965 siop_script_write(sc, siop_target->reseloff, 0x800c00ff); 1966 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1967 TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); 1968 free(sc->sc_c.targets[target], M_DEVBUF); 1969 sc->sc_c.targets[target] = NULL; 1970 sc->sc_ntargets--; 1971 } 1972 1973 #ifdef SIOP_STATS 1974 void 1975 siop_printstats() 1976 { 1977 printf("siop_stat_intr %d\n", siop_stat_intr); 1978 printf("siop_stat_intr_shortxfer %d\n", siop_stat_intr_shortxfer); 1979 printf("siop_stat_intr_xferdisc %d\n", siop_stat_intr_xferdisc); 1980 printf("siop_stat_intr_sdp %d\n", siop_stat_intr_sdp); 1981 printf("siop_stat_intr_done %d\n", siop_stat_intr_done); 1982 printf("siop_stat_intr_lunresel %d\n", siop_stat_intr_lunresel); 1983 printf("siop_stat_intr_qfull %d\n", siop_stat_intr_qfull); 1984 } 1985 #endif 1986