siop.c revision 1.84
1 /* $NetBSD: siop.c,v 1.84 2007/09/30 11:59:42 martin 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 1.84 2007/09/30 11:59:42 martin 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 /* 68 #define SIOP_DEBUG 69 #define SIOP_DEBUG_DR 70 #define SIOP_DEBUG_INTR 71 #define SIOP_DEBUG_SCHED 72 #define DUMP_SCRIPT 73 */ 74 75 #define SIOP_STATS 76 77 #ifndef SIOP_DEFAULT_TARGET 78 #define SIOP_DEFAULT_TARGET 7 79 #endif 80 81 /* number of cmd descriptors per block */ 82 #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct siop_xfer)) 83 84 /* Number of scheduler slot (needs to match script) */ 85 #define SIOP_NSLOTS 40 86 87 void siop_reset(struct siop_softc *); 88 void siop_handle_reset(struct siop_softc *); 89 int siop_handle_qtag_reject(struct siop_cmd *); 90 void siop_scsicmd_end(struct siop_cmd *); 91 void siop_unqueue(struct siop_softc *, int, int); 92 static void siop_start(struct siop_softc *, struct siop_cmd *); 93 void siop_timeout(void *); 94 int siop_scsicmd(struct scsipi_xfer *); 95 void siop_scsipi_request(struct scsipi_channel *, 96 scsipi_adapter_req_t, void *); 97 void siop_dump_script(struct siop_softc *); 98 void siop_morecbd(struct siop_softc *); 99 struct siop_lunsw *siop_get_lunsw(struct siop_softc *); 100 void siop_add_reselsw(struct siop_softc *, int); 101 void siop_update_scntl3(struct siop_softc *, 102 struct siop_common_target *); 103 104 #ifdef SIOP_STATS 105 static int siop_stat_intr = 0; 106 static int siop_stat_intr_shortxfer = 0; 107 static int siop_stat_intr_sdp = 0; 108 static int siop_stat_intr_saveoffset = 0; 109 static int siop_stat_intr_done = 0; 110 static int siop_stat_intr_xferdisc = 0; 111 static int siop_stat_intr_lunresel = 0; 112 static int siop_stat_intr_qfull = 0; 113 void siop_printstats(void); 114 #define INCSTAT(x) x++ 115 #else 116 #define INCSTAT(x) 117 #endif 118 119 static inline void siop_script_sync(struct siop_softc *, int); 120 static inline void 121 siop_script_sync(sc, ops) 122 struct siop_softc *sc; 123 int ops; 124 { 125 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) 126 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 127 PAGE_SIZE, ops); 128 } 129 130 static inline u_int32_t siop_script_read(struct siop_softc *, u_int); 131 static inline u_int32_t 132 siop_script_read(sc, offset) 133 struct siop_softc *sc; 134 u_int offset; 135 { 136 if (sc->sc_c.features & SF_CHIP_RAM) { 137 return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 138 offset * 4); 139 } else { 140 return le32toh(sc->sc_c.sc_script[offset]); 141 } 142 } 143 144 static inline void siop_script_write(struct siop_softc *, u_int, 145 u_int32_t); 146 static inline void 147 siop_script_write(sc, offset, val) 148 struct siop_softc *sc; 149 u_int offset; 150 u_int32_t val; 151 { 152 if (sc->sc_c.features & SF_CHIP_RAM) { 153 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 154 offset * 4, val); 155 } else { 156 sc->sc_c.sc_script[offset] = htole32(val); 157 } 158 } 159 160 void 161 siop_attach(sc) 162 struct siop_softc *sc; 163 { 164 if (siop_common_attach(&sc->sc_c) != 0) 165 return; 166 167 TAILQ_INIT(&sc->free_list); 168 TAILQ_INIT(&sc->cmds); 169 TAILQ_INIT(&sc->lunsw_list); 170 sc->sc_currschedslot = 0; 171 #ifdef SIOP_DEBUG 172 printf("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n", 173 sc->sc_c.sc_dev.dv_xname, (int)sizeof(siop_script), 174 (u_int32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); 175 #endif 176 177 sc->sc_c.sc_adapt.adapt_max_periph = SIOP_NTAG - 1; 178 sc->sc_c.sc_adapt.adapt_request = siop_scsipi_request; 179 180 /* Do a bus reset, so that devices fall back to narrow/async */ 181 siop_resetbus(&sc->sc_c); 182 /* 183 * siop_reset() will reset the chip, thus clearing pending interrupts 184 */ 185 siop_reset(sc); 186 #ifdef DUMP_SCRIPT 187 siop_dump_script(sc); 188 #endif 189 190 config_found((struct device*)sc, &sc->sc_c.sc_chan, scsiprint); 191 } 192 193 void 194 siop_reset(sc) 195 struct siop_softc *sc; 196 { 197 int i, j; 198 struct siop_lunsw *lunsw; 199 200 siop_common_reset(&sc->sc_c); 201 202 /* copy and patch the script */ 203 if (sc->sc_c.features & SF_CHIP_RAM) { 204 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, 205 siop_script, sizeof(siop_script) / sizeof(siop_script[0])); 206 for (j = 0; j < 207 (sizeof(E_abs_msgin_Used) / sizeof(E_abs_msgin_Used[0])); 208 j++) { 209 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 210 E_abs_msgin_Used[j] * 4, 211 sc->sc_c.sc_scriptaddr + Ent_msgin_space); 212 } 213 if (sc->sc_c.features & SF_CHIP_LED0) { 214 bus_space_write_region_4(sc->sc_c.sc_ramt, 215 sc->sc_c.sc_ramh, 216 Ent_led_on1, siop_led_on, 217 sizeof(siop_led_on) / sizeof(siop_led_on[0])); 218 bus_space_write_region_4(sc->sc_c.sc_ramt, 219 sc->sc_c.sc_ramh, 220 Ent_led_on2, siop_led_on, 221 sizeof(siop_led_on) / sizeof(siop_led_on[0])); 222 bus_space_write_region_4(sc->sc_c.sc_ramt, 223 sc->sc_c.sc_ramh, 224 Ent_led_off, siop_led_off, 225 sizeof(siop_led_off) / sizeof(siop_led_off[0])); 226 } 227 } else { 228 for (j = 0; 229 j < (sizeof(siop_script) / sizeof(siop_script[0])); j++) { 230 sc->sc_c.sc_script[j] = htole32(siop_script[j]); 231 } 232 for (j = 0; j < 233 (sizeof(E_abs_msgin_Used) / sizeof(E_abs_msgin_Used[0])); 234 j++) { 235 sc->sc_c.sc_script[E_abs_msgin_Used[j]] = 236 htole32(sc->sc_c.sc_scriptaddr + Ent_msgin_space); 237 } 238 if (sc->sc_c.features & SF_CHIP_LED0) { 239 for (j = 0; j < (sizeof(siop_led_on) / 240 sizeof(siop_led_on[0])); j++) 241 sc->sc_c.sc_script[ 242 Ent_led_on1 / sizeof(siop_led_on[0]) + j 243 ] = htole32(siop_led_on[j]); 244 for (j = 0; j < (sizeof(siop_led_on) / 245 sizeof(siop_led_on[0])); j++) 246 sc->sc_c.sc_script[ 247 Ent_led_on2 / sizeof(siop_led_on[0]) + j 248 ] = htole32(siop_led_on[j]); 249 for (j = 0; j < (sizeof(siop_led_off) / 250 sizeof(siop_led_off[0])); j++) 251 sc->sc_c.sc_script[ 252 Ent_led_off / sizeof(siop_led_off[0]) + j 253 ] = htole32(siop_led_off[j]); 254 } 255 } 256 sc->script_free_lo = sizeof(siop_script) / sizeof(siop_script[0]); 257 sc->script_free_hi = sc->sc_c.ram_size / 4; 258 sc->sc_ntargets = 0; 259 260 /* free used and unused lun switches */ 261 while((lunsw = TAILQ_FIRST(&sc->lunsw_list)) != NULL) { 262 #ifdef SIOP_DEBUG 263 printf("%s: free lunsw at offset %d\n", 264 sc->sc_c.sc_dev.dv_xname, lunsw->lunsw_off); 265 #endif 266 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 267 free(lunsw, M_DEVBUF); 268 } 269 TAILQ_INIT(&sc->lunsw_list); 270 /* restore reselect switch */ 271 for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { 272 struct siop_target *target; 273 if (sc->sc_c.targets[i] == NULL) 274 continue; 275 #ifdef SIOP_DEBUG 276 printf("%s: restore sw for target %d\n", 277 sc->sc_c.sc_dev.dv_xname, i); 278 #endif 279 target = (struct siop_target *)sc->sc_c.targets[i]; 280 free(target->lunsw, M_DEVBUF); 281 target->lunsw = siop_get_lunsw(sc); 282 if (target->lunsw == NULL) { 283 printf("%s: can't alloc lunsw for target %d\n", 284 sc->sc_c.sc_dev.dv_xname, i); 285 break; 286 } 287 siop_add_reselsw(sc, i); 288 } 289 290 /* start script */ 291 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { 292 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 293 PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 294 } 295 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, 296 sc->sc_c.sc_scriptaddr + Ent_reselect); 297 } 298 299 #if 0 300 #define CALL_SCRIPT(ent) do {\ 301 printf ("start script DSA 0x%lx DSP 0x%lx\n", \ 302 siop_cmd->cmd_c.dsa, \ 303 sc->sc_c.sc_scriptaddr + ent); \ 304 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 305 } while (0) 306 #else 307 #define CALL_SCRIPT(ent) do {\ 308 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 309 } while (0) 310 #endif 311 312 int 313 siop_intr(v) 314 void *v; 315 { 316 struct siop_softc *sc = v; 317 struct siop_target *siop_target; 318 struct siop_cmd *siop_cmd; 319 struct siop_lun *siop_lun; 320 struct scsipi_xfer *xs; 321 int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ 322 u_int32_t irqcode; 323 int need_reset = 0; 324 int offset, target, lun, tag; 325 bus_addr_t dsa; 326 struct siop_cbd *cbdp; 327 int freetarget = 0; 328 int restart = 0; 329 330 istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); 331 if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) 332 return 0; 333 INCSTAT(siop_stat_intr); 334 if (istat & ISTAT_INTF) { 335 printf("INTRF\n"); 336 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 337 SIOP_ISTAT, ISTAT_INTF); 338 } 339 if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == 340 (ISTAT_DIP | ISTAT_ABRT)) { 341 /* clear abort */ 342 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 343 SIOP_ISTAT, 0); 344 } 345 /* use DSA to find the current siop_cmd */ 346 siop_cmd = NULL; 347 dsa = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA); 348 TAILQ_FOREACH(cbdp, &sc->cmds, next) { 349 if (dsa >= cbdp->xferdma->dm_segs[0].ds_addr && 350 dsa < cbdp->xferdma->dm_segs[0].ds_addr + PAGE_SIZE) { 351 dsa -= cbdp->xferdma->dm_segs[0].ds_addr; 352 siop_cmd = &cbdp->cmds[dsa / sizeof(struct siop_xfer)]; 353 siop_table_sync(siop_cmd, 354 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 355 break; 356 } 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 independently, 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). Compute resid and 497 * just go to status, the command should 498 * terminate. 499 */ 500 INCSTAT(siop_stat_intr_shortxfer); 501 if (scratcha0 & A_flag_data) 502 siop_ma(&siop_cmd->cmd_c); 503 else if ((dstat & DSTAT_DFE) == 0) 504 siop_clearfifo(&sc->sc_c); 505 CALL_SCRIPT(Ent_status); 506 return 1; 507 case SSTAT1_PHASE_MSGIN: 508 /* 509 * target may be ready to disconnect 510 * Compute resid which would be used later 511 * if a save data pointer is needed. 512 */ 513 INCSTAT(siop_stat_intr_xferdisc); 514 if (scratcha0 & A_flag_data) 515 siop_ma(&siop_cmd->cmd_c); 516 else if ((dstat & DSTAT_DFE) == 0) 517 siop_clearfifo(&sc->sc_c); 518 bus_space_write_1(sc->sc_c.sc_rt, 519 sc->sc_c.sc_rh, SIOP_SCRATCHA, 520 scratcha0 & ~A_flag_data); 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 exception (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 (msgin == MSG_IGN_WIDE_RESIDUE) { 786 /* use the extmsgdata table to get the second byte */ 787 siop_cmd->cmd_tables->t_extmsgdata.count = 788 htole32(1); 789 siop_table_sync(siop_cmd, 790 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 791 CALL_SCRIPT(Ent_get_extmsgdata); 792 return 1; 793 } 794 if (xs) 795 scsipi_printaddr(xs->xs_periph); 796 else 797 printf("%s: ", sc->sc_c.sc_dev.dv_xname); 798 printf("unhandled message 0x%x\n", 799 siop_cmd->cmd_tables->msg_in[0]); 800 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 801 siop_cmd->cmd_tables->t_msgout.count= htole32(1); 802 siop_table_sync(siop_cmd, 803 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 804 CALL_SCRIPT(Ent_send_msgout); 805 return 1; 806 } 807 case A_int_extmsgin: 808 #ifdef SIOP_DEBUG_INTR 809 printf("extended message: msg 0x%x len %d\n", 810 siop_cmd->cmd_tables->msg_in[2], 811 siop_cmd->cmd_tables->msg_in[1]); 812 #endif 813 if (siop_cmd->cmd_tables->msg_in[1] > 814 sizeof(siop_cmd->cmd_tables->msg_in) - 2) 815 printf("%s: extended message too big (%d)\n", 816 sc->sc_c.sc_dev.dv_xname, 817 siop_cmd->cmd_tables->msg_in[1]); 818 siop_cmd->cmd_tables->t_extmsgdata.count = 819 htole32(siop_cmd->cmd_tables->msg_in[1] - 1); 820 siop_table_sync(siop_cmd, 821 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 822 CALL_SCRIPT(Ent_get_extmsgdata); 823 return 1; 824 case A_int_extmsgdata: 825 #ifdef SIOP_DEBUG_INTR 826 { 827 int i; 828 printf("extended message: 0x%x, data:", 829 siop_cmd->cmd_tables->msg_in[2]); 830 for (i = 3; i < 2 + siop_cmd->cmd_tables->msg_in[1]; 831 i++) 832 printf(" 0x%x", 833 siop_cmd->cmd_tables->msg_in[i]); 834 printf("\n"); 835 } 836 #endif 837 if (siop_cmd->cmd_tables->msg_in[0] == 838 MSG_IGN_WIDE_RESIDUE) { 839 /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ 840 if (siop_cmd->cmd_tables->msg_in[3] != 1) 841 printf("MSG_IGN_WIDE_RESIDUE: " 842 "bad len %d\n", 843 siop_cmd->cmd_tables->msg_in[3]); 844 switch (siop_iwr(&siop_cmd->cmd_c)) { 845 case SIOP_NEG_MSGOUT: 846 siop_table_sync(siop_cmd, 847 BUS_DMASYNC_PREREAD | 848 BUS_DMASYNC_PREWRITE); 849 CALL_SCRIPT(Ent_send_msgout); 850 return(1); 851 case SIOP_NEG_ACK: 852 CALL_SCRIPT(Ent_msgin_ack); 853 return(1); 854 default: 855 panic("invalid retval from " 856 "siop_iwr()"); 857 } 858 return(1); 859 } 860 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 861 switch (siop_wdtr_neg(&siop_cmd->cmd_c)) { 862 case SIOP_NEG_MSGOUT: 863 siop_update_scntl3(sc, 864 siop_cmd->cmd_c.siop_target); 865 siop_table_sync(siop_cmd, 866 BUS_DMASYNC_PREREAD | 867 BUS_DMASYNC_PREWRITE); 868 CALL_SCRIPT(Ent_send_msgout); 869 return(1); 870 case SIOP_NEG_ACK: 871 siop_update_scntl3(sc, 872 siop_cmd->cmd_c.siop_target); 873 CALL_SCRIPT(Ent_msgin_ack); 874 return(1); 875 default: 876 panic("invalid retval from " 877 "siop_wdtr_neg()"); 878 } 879 return(1); 880 } 881 if (siop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 882 switch (siop_sdtr_neg(&siop_cmd->cmd_c)) { 883 case SIOP_NEG_MSGOUT: 884 siop_update_scntl3(sc, 885 siop_cmd->cmd_c.siop_target); 886 siop_table_sync(siop_cmd, 887 BUS_DMASYNC_PREREAD | 888 BUS_DMASYNC_PREWRITE); 889 CALL_SCRIPT(Ent_send_msgout); 890 return(1); 891 case SIOP_NEG_ACK: 892 siop_update_scntl3(sc, 893 siop_cmd->cmd_c.siop_target); 894 CALL_SCRIPT(Ent_msgin_ack); 895 return(1); 896 default: 897 panic("invalid retval from " 898 "siop_wdtr_neg()"); 899 } 900 return(1); 901 } 902 /* send a message reject */ 903 siop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 904 siop_cmd->cmd_tables->t_msgout.count = htole32(1); 905 siop_table_sync(siop_cmd, 906 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 907 CALL_SCRIPT(Ent_send_msgout); 908 return 1; 909 case A_int_disc: 910 INCSTAT(siop_stat_intr_sdp); 911 offset = bus_space_read_1(sc->sc_c.sc_rt, 912 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 913 #ifdef SIOP_DEBUG_DR 914 printf("disconnect offset %d\n", offset); 915 #endif 916 siop_sdp(&siop_cmd->cmd_c, offset); 917 /* we start again with no offset */ 918 siop_cmd->saved_offset = SIOP_NOOFFSET; 919 siop_table_sync(siop_cmd, 920 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 921 CALL_SCRIPT(Ent_script_sched); 922 return 1; 923 case A_int_saveoffset: 924 INCSTAT(siop_stat_intr_saveoffset); 925 offset = bus_space_read_1(sc->sc_c.sc_rt, 926 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 927 #ifdef SIOP_DEBUG_DR 928 printf("saveoffset offset %d\n", offset); 929 #endif 930 siop_cmd->saved_offset = offset; 931 CALL_SCRIPT(Ent_script_sched); 932 return 1; 933 case A_int_resfail: 934 printf("reselect failed\n"); 935 CALL_SCRIPT(Ent_script_sched); 936 return 1; 937 case A_int_done: 938 if (xs == NULL) { 939 printf("%s: done without command, DSA=0x%lx\n", 940 sc->sc_c.sc_dev.dv_xname, 941 (u_long)siop_cmd->cmd_c.dsa); 942 siop_cmd->cmd_c.status = CMDST_FREE; 943 CALL_SCRIPT(Ent_script_sched); 944 return 1; 945 } 946 #ifdef SIOP_DEBUG_INTR 947 printf("done, DSA=0x%lx target id 0x%x last msg " 948 "in=0x%x status=0x%x\n", (u_long)siop_cmd->cmd_c.dsa, 949 le32toh(siop_cmd->cmd_tables->id), 950 siop_cmd->cmd_tables->msg_in[0], 951 le32toh(siop_cmd->cmd_tables->status)); 952 #endif 953 INCSTAT(siop_stat_intr_done); 954 /* update resid. */ 955 offset = bus_space_read_1(sc->sc_c.sc_rt, 956 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 957 /* 958 * if we got a disconnect between the last data phase 959 * and the status phase, offset will be 0. In this 960 * case, siop_cmd->saved_offset will have the proper 961 * value if it got updated by the controller 962 */ 963 if (offset == 0 && 964 siop_cmd->saved_offset != SIOP_NOOFFSET) 965 offset = siop_cmd->saved_offset; 966 siop_update_resid(&siop_cmd->cmd_c, offset); 967 siop_cmd->cmd_c.status = CMDST_DONE; 968 goto end; 969 default: 970 printf("unknown irqcode %x\n", irqcode); 971 if (xs) { 972 xs->error = XS_SELTIMEOUT; 973 goto end; 974 } 975 goto reset; 976 } 977 return 1; 978 } 979 /* We just should't get there */ 980 panic("siop_intr: I shouldn't be there !"); 981 982 end: 983 /* 984 * restart the script now if command completed properly 985 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 986 * queue 987 */ 988 xs->status = le32toh(siop_cmd->cmd_tables->status); 989 if (xs->status == SCSI_OK) 990 CALL_SCRIPT(Ent_script_sched); 991 else 992 restart = 1; 993 siop_lun->siop_tag[tag].active = NULL; 994 siop_scsicmd_end(siop_cmd); 995 if (freetarget && siop_target->target_c.status == TARST_PROBING) 996 siop_del_dev(sc, target, lun); 997 if (restart) 998 CALL_SCRIPT(Ent_script_sched); 999 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1000 /* a command terminated, so we have free slots now */ 1001 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1002 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1003 } 1004 1005 return 1; 1006 } 1007 1008 void 1009 siop_scsicmd_end(siop_cmd) 1010 struct siop_cmd *siop_cmd; 1011 { 1012 struct scsipi_xfer *xs = siop_cmd->cmd_c.xs; 1013 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1014 1015 switch(xs->status) { 1016 case SCSI_OK: 1017 xs->error = XS_NOERROR; 1018 break; 1019 case SCSI_BUSY: 1020 xs->error = XS_BUSY; 1021 break; 1022 case SCSI_CHECK: 1023 xs->error = XS_BUSY; 1024 /* remove commands in the queue and scheduler */ 1025 siop_unqueue(sc, xs->xs_periph->periph_target, 1026 xs->xs_periph->periph_lun); 1027 break; 1028 case SCSI_QUEUE_FULL: 1029 INCSTAT(siop_stat_intr_qfull); 1030 #ifdef SIOP_DEBUG 1031 printf("%s:%d:%d: queue full (tag %d)\n", 1032 sc->sc_c.sc_dev.dv_xname, 1033 xs->xs_periph->periph_target, 1034 xs->xs_periph->periph_lun, siop_cmd->cmd_c.tag); 1035 #endif 1036 xs->error = XS_BUSY; 1037 break; 1038 case SCSI_SIOP_NOCHECK: 1039 /* 1040 * don't check status, xs->error is already valid 1041 */ 1042 break; 1043 case SCSI_SIOP_NOSTATUS: 1044 /* 1045 * the status byte was not updated, cmd was 1046 * aborted 1047 */ 1048 xs->error = XS_SELTIMEOUT; 1049 break; 1050 default: 1051 scsipi_printaddr(xs->xs_periph); 1052 printf("invalid status code %d\n", xs->status); 1053 xs->error = XS_DRIVER_STUFFUP; 1054 } 1055 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1056 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data, 0, 1057 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1058 (xs->xs_control & XS_CTL_DATA_IN) ? 1059 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1060 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_data); 1061 } 1062 bus_dmamap_unload(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd); 1063 if ((xs->xs_control & XS_CTL_POLL) == 0) 1064 callout_stop(&xs->xs_callout); 1065 siop_cmd->cmd_c.status = CMDST_FREE; 1066 TAILQ_INSERT_TAIL(&sc->free_list, siop_cmd, next); 1067 #if 0 1068 if (xs->resid != 0) 1069 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1070 #endif 1071 scsipi_done (xs); 1072 } 1073 1074 void 1075 siop_unqueue(sc, target, lun) 1076 struct siop_softc *sc; 1077 int target; 1078 int lun; 1079 { 1080 int slot, tag; 1081 struct siop_cmd *siop_cmd; 1082 struct siop_lun *siop_lun = 1083 ((struct siop_target *)sc->sc_c.targets[target])->siop_lun[lun]; 1084 1085 /* first make sure to read valid data */ 1086 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1087 1088 for (tag = 1; tag < SIOP_NTAG; tag++) { 1089 /* look for commands in the scheduler, not yet started */ 1090 if (siop_lun->siop_tag[tag].active == NULL) 1091 continue; 1092 siop_cmd = siop_lun->siop_tag[tag].active; 1093 for (slot = 0; slot <= sc->sc_currschedslot; slot++) { 1094 if (siop_script_read(sc, 1095 (Ent_script_sched_slot0 / 4) + slot * 2 + 1) == 1096 siop_cmd->cmd_c.dsa + 1097 sizeof(struct siop_common_xfer) + 1098 Ent_ldsa_select) 1099 break; 1100 } 1101 if (slot > sc->sc_currschedslot) 1102 continue; /* didn't find it */ 1103 if (siop_script_read(sc, 1104 (Ent_script_sched_slot0 / 4) + slot * 2) == 0x80000000) 1105 continue; /* already started */ 1106 /* clear the slot */ 1107 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1108 0x80000000); 1109 /* ask to requeue */ 1110 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1111 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1112 siop_lun->siop_tag[tag].active = NULL; 1113 siop_scsicmd_end(siop_cmd); 1114 } 1115 /* update sc_currschedslot */ 1116 sc->sc_currschedslot = 0; 1117 for (slot = SIOP_NSLOTS - 1; slot >= 0; slot--) { 1118 if (siop_script_read(sc, 1119 (Ent_script_sched_slot0 / 4) + slot * 2) != 0x80000000) 1120 sc->sc_currschedslot = slot; 1121 } 1122 } 1123 1124 /* 1125 * handle a rejected queue tag message: the command will run untagged, 1126 * has to adjust the reselect script. 1127 */ 1128 int 1129 siop_handle_qtag_reject(siop_cmd) 1130 struct siop_cmd *siop_cmd; 1131 { 1132 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1133 int target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1134 int lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1135 int tag = siop_cmd->cmd_tables->msg_out[2]; 1136 struct siop_lun *siop_lun = 1137 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1138 1139 #ifdef SIOP_DEBUG 1140 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1141 sc->sc_c.sc_dev.dv_xname, target, lun, tag, siop_cmd->cmd_c.tag, 1142 siop_cmd->cmd_c.status); 1143 #endif 1144 1145 if (siop_lun->siop_tag[0].active != NULL) { 1146 printf("%s: untagged command already running for target %d " 1147 "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, 1148 target, lun, siop_lun->siop_tag[0].active->cmd_c.status); 1149 return -1; 1150 } 1151 /* clear tag slot */ 1152 siop_lun->siop_tag[tag].active = NULL; 1153 /* add command to non-tagged slot */ 1154 siop_lun->siop_tag[0].active = siop_cmd; 1155 siop_cmd->cmd_c.tag = 0; 1156 /* adjust reselect script if there is one */ 1157 if (siop_lun->siop_tag[0].reseloff > 0) { 1158 siop_script_write(sc, 1159 siop_lun->siop_tag[0].reseloff + 1, 1160 siop_cmd->cmd_c.dsa + sizeof(struct siop_common_xfer) + 1161 Ent_ldsa_reload_dsa); 1162 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1163 } 1164 return 0; 1165 } 1166 1167 /* 1168 * handle a bus reset: reset chip, unqueue all active commands, free all 1169 * target struct and report lossage to upper layer. 1170 * As the upper layer may requeue immediatly we have to first store 1171 * all active commands in a temporary queue. 1172 */ 1173 void 1174 siop_handle_reset(sc) 1175 struct siop_softc *sc; 1176 { 1177 struct siop_cmd *siop_cmd; 1178 struct siop_lun *siop_lun; 1179 int target, lun, tag; 1180 /* 1181 * scsi bus reset. reset the chip and restart 1182 * the queue. Need to clean up all active commands 1183 */ 1184 printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); 1185 /* stop, reset and restart the chip */ 1186 siop_reset(sc); 1187 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1188 /* chip has been reset, all slots are free now */ 1189 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1190 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1191 } 1192 /* 1193 * Process all commands: first commands being executed 1194 */ 1195 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1196 target++) { 1197 if (sc->sc_c.targets[target] == NULL) 1198 continue; 1199 for (lun = 0; lun < 8; lun++) { 1200 struct siop_target *siop_target = 1201 (struct siop_target *)sc->sc_c.targets[target]; 1202 siop_lun = siop_target->siop_lun[lun]; 1203 if (siop_lun == NULL) 1204 continue; 1205 for (tag = 0; tag < 1206 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1207 SIOP_NTAG : 1); 1208 tag++) { 1209 siop_cmd = siop_lun->siop_tag[tag].active; 1210 if (siop_cmd == NULL) 1211 continue; 1212 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1213 printf("command with tag id %d reset\n", tag); 1214 siop_cmd->cmd_c.xs->error = 1215 (siop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1216 XS_TIMEOUT : XS_RESET; 1217 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1218 siop_lun->siop_tag[tag].active = NULL; 1219 siop_cmd->cmd_c.status = CMDST_DONE; 1220 siop_scsicmd_end(siop_cmd); 1221 } 1222 } 1223 sc->sc_c.targets[target]->status = TARST_ASYNC; 1224 sc->sc_c.targets[target]->flags &= ~TARF_ISWIDE; 1225 sc->sc_c.targets[target]->period = 1226 sc->sc_c.targets[target]->offset = 0; 1227 siop_update_xfer_mode(&sc->sc_c, target); 1228 } 1229 1230 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1231 } 1232 1233 void 1234 siop_scsipi_request(chan, req, arg) 1235 struct scsipi_channel *chan; 1236 scsipi_adapter_req_t req; 1237 void *arg; 1238 { 1239 struct scsipi_xfer *xs; 1240 struct scsipi_periph *periph; 1241 struct siop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1242 struct siop_cmd *siop_cmd; 1243 struct siop_target *siop_target; 1244 int s, error, i; 1245 int target; 1246 int lun; 1247 1248 switch (req) { 1249 case ADAPTER_REQ_RUN_XFER: 1250 xs = arg; 1251 periph = xs->xs_periph; 1252 target = periph->periph_target; 1253 lun = periph->periph_lun; 1254 1255 s = splbio(); 1256 #ifdef SIOP_DEBUG_SCHED 1257 printf("starting cmd for %d:%d\n", target, lun); 1258 #endif 1259 siop_cmd = TAILQ_FIRST(&sc->free_list); 1260 if (siop_cmd == NULL) { 1261 xs->error = XS_RESOURCE_SHORTAGE; 1262 scsipi_done(xs); 1263 splx(s); 1264 return; 1265 } 1266 TAILQ_REMOVE(&sc->free_list, siop_cmd, next); 1267 #ifdef DIAGNOSTIC 1268 if (siop_cmd->cmd_c.status != CMDST_FREE) 1269 panic("siop_scsicmd: new cmd not free"); 1270 #endif 1271 siop_target = (struct siop_target*)sc->sc_c.targets[target]; 1272 if (siop_target == NULL) { 1273 #ifdef SIOP_DEBUG 1274 printf("%s: alloc siop_target for target %d\n", 1275 sc->sc_c.sc_dev.dv_xname, target); 1276 #endif 1277 sc->sc_c.targets[target] = 1278 malloc(sizeof(struct siop_target), 1279 M_DEVBUF, M_NOWAIT); 1280 if (sc->sc_c.targets[target] == NULL) { 1281 printf("%s: can't malloc memory for " 1282 "target %d\n", sc->sc_c.sc_dev.dv_xname, 1283 target); 1284 xs->error = XS_RESOURCE_SHORTAGE; 1285 scsipi_done(xs); 1286 splx(s); 1287 return; 1288 } 1289 siop_target = 1290 (struct siop_target*)sc->sc_c.targets[target]; 1291 siop_target->target_c.status = TARST_PROBING; 1292 siop_target->target_c.flags = 0; 1293 siop_target->target_c.id = 1294 sc->sc_c.clock_div << 24; /* scntl3 */ 1295 siop_target->target_c.id |= target << 16; /* id */ 1296 /* siop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1297 1298 /* get a lun switch script */ 1299 siop_target->lunsw = siop_get_lunsw(sc); 1300 if (siop_target->lunsw == NULL) { 1301 printf("%s: can't alloc lunsw for target %d\n", 1302 sc->sc_c.sc_dev.dv_xname, target); 1303 xs->error = XS_RESOURCE_SHORTAGE; 1304 scsipi_done(xs); 1305 splx(s); 1306 return; 1307 } 1308 for (i=0; i < 8; i++) 1309 siop_target->siop_lun[i] = NULL; 1310 siop_add_reselsw(sc, target); 1311 } 1312 if (siop_target->siop_lun[lun] == NULL) { 1313 siop_target->siop_lun[lun] = 1314 malloc(sizeof(struct siop_lun), M_DEVBUF, 1315 M_NOWAIT|M_ZERO); 1316 if (siop_target->siop_lun[lun] == NULL) { 1317 printf("%s: can't alloc siop_lun for " 1318 "target %d lun %d\n", 1319 sc->sc_c.sc_dev.dv_xname, target, lun); 1320 xs->error = XS_RESOURCE_SHORTAGE; 1321 scsipi_done(xs); 1322 splx(s); 1323 return; 1324 } 1325 } 1326 siop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1327 siop_cmd->cmd_c.xs = xs; 1328 siop_cmd->cmd_c.flags = 0; 1329 siop_cmd->cmd_c.status = CMDST_READY; 1330 1331 /* load the DMA maps */ 1332 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1333 siop_cmd->cmd_c.dmamap_cmd, 1334 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1335 if (error) { 1336 printf("%s: unable to load cmd DMA map: %d\n", 1337 sc->sc_c.sc_dev.dv_xname, error); 1338 xs->error = XS_DRIVER_STUFFUP; 1339 scsipi_done(xs); 1340 splx(s); 1341 return; 1342 } 1343 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1344 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1345 siop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1346 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1347 ((xs->xs_control & XS_CTL_DATA_IN) ? 1348 BUS_DMA_READ : BUS_DMA_WRITE)); 1349 if (error) { 1350 printf("%s: unable to load cmd DMA map: %d", 1351 sc->sc_c.sc_dev.dv_xname, error); 1352 xs->error = XS_DRIVER_STUFFUP; 1353 scsipi_done(xs); 1354 bus_dmamap_unload(sc->sc_c.sc_dmat, 1355 siop_cmd->cmd_c.dmamap_cmd); 1356 splx(s); 1357 return; 1358 } 1359 bus_dmamap_sync(sc->sc_c.sc_dmat, 1360 siop_cmd->cmd_c.dmamap_data, 0, 1361 siop_cmd->cmd_c.dmamap_data->dm_mapsize, 1362 (xs->xs_control & XS_CTL_DATA_IN) ? 1363 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1364 } 1365 bus_dmamap_sync(sc->sc_c.sc_dmat, siop_cmd->cmd_c.dmamap_cmd, 0, 1366 siop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1367 BUS_DMASYNC_PREWRITE); 1368 1369 if (xs->xs_tag_type) { 1370 /* use tag_id + 1, tag 0 is reserved for untagged cmds*/ 1371 siop_cmd->cmd_c.tag = xs->xs_tag_id + 1; 1372 } else { 1373 siop_cmd->cmd_c.tag = 0; 1374 } 1375 siop_setuptables(&siop_cmd->cmd_c); 1376 siop_cmd->saved_offset = SIOP_NOOFFSET; 1377 siop_table_sync(siop_cmd, 1378 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1379 siop_start(sc, siop_cmd); 1380 if (xs->xs_control & XS_CTL_POLL) { 1381 /* poll for command completion */ 1382 while ((xs->xs_status & XS_STS_DONE) == 0) { 1383 delay(1000); 1384 siop_intr(sc); 1385 } 1386 } 1387 splx(s); 1388 return; 1389 1390 case ADAPTER_REQ_GROW_RESOURCES: 1391 #ifdef SIOP_DEBUG 1392 printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, 1393 sc->sc_c.sc_adapt.adapt_openings); 1394 #endif 1395 siop_morecbd(sc); 1396 return; 1397 1398 case ADAPTER_REQ_SET_XFER_MODE: 1399 { 1400 struct scsipi_xfer_mode *xm = arg; 1401 if (sc->sc_c.targets[xm->xm_target] == NULL) 1402 return; 1403 s = splbio(); 1404 if (xm->xm_mode & PERIPH_CAP_TQING) 1405 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1406 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1407 (sc->sc_c.features & SF_BUS_WIDE)) 1408 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1409 if (xm->xm_mode & PERIPH_CAP_SYNC) 1410 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1411 if ((xm->xm_mode & (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16)) || 1412 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1413 sc->sc_c.targets[xm->xm_target]->status = 1414 TARST_ASYNC; 1415 1416 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1417 if (scsipi_lookup_periph(chan, 1418 xm->xm_target, lun) != NULL) { 1419 /* allocate a lun sw entry for this device */ 1420 siop_add_dev(sc, xm->xm_target, lun); 1421 } 1422 } 1423 1424 splx(s); 1425 } 1426 } 1427 } 1428 1429 static void 1430 siop_start(sc, siop_cmd) 1431 struct siop_softc *sc; 1432 struct siop_cmd *siop_cmd; 1433 { 1434 struct siop_lun *siop_lun; 1435 struct siop_xfer *siop_xfer; 1436 u_int32_t dsa; 1437 int timeout; 1438 int target, lun, slot; 1439 1440 /* 1441 * first make sure to read valid data 1442 */ 1443 siop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1444 1445 /* 1446 * The queue management here is a bit tricky: the script always looks 1447 * at the slot from first to last, so if we always use the first 1448 * free slot commands can stay at the tail of the queue ~forever. 1449 * The algorithm used here is to restart from the head when we know 1450 * that the queue is empty, and only add commands after the last one. 1451 * When we're at the end of the queue wait for the script to clear it. 1452 * The best thing to do here would be to implement a circular queue, 1453 * but using only 53c720 features this can be "interesting". 1454 * A mid-way solution could be to implement 2 queues and swap orders. 1455 */ 1456 slot = sc->sc_currschedslot; 1457 /* 1458 * If the instruction is 0x80000000 (JUMP foo, IF FALSE) the slot is 1459 * free. As this is the last used slot, all previous slots are free, 1460 * we can restart from 0. 1461 */ 1462 if (siop_script_read(sc, (Ent_script_sched_slot0 / 4) + slot * 2) == 1463 0x80000000) { 1464 slot = sc->sc_currschedslot = 0; 1465 } else { 1466 slot++; 1467 } 1468 target = siop_cmd->cmd_c.xs->xs_periph->periph_target; 1469 lun = siop_cmd->cmd_c.xs->xs_periph->periph_lun; 1470 siop_lun = 1471 ((struct siop_target*)sc->sc_c.targets[target])->siop_lun[lun]; 1472 /* if non-tagged command active, panic: this shouldn't happen */ 1473 if (siop_lun->siop_tag[0].active != NULL) { 1474 panic("siop_start: tagged cmd while untagged running"); 1475 } 1476 #ifdef DIAGNOSTIC 1477 /* sanity check the tag if needed */ 1478 if (siop_cmd->cmd_c.flags & CMDFL_TAG) { 1479 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].active != NULL) 1480 panic("siop_start: tag not free"); 1481 if (siop_cmd->cmd_c.tag >= SIOP_NTAG) { 1482 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1483 printf(": tag id %d\n", siop_cmd->cmd_c.tag); 1484 panic("siop_start: invalid tag id"); 1485 } 1486 } 1487 #endif 1488 /* 1489 * find a free scheduler slot and load it. 1490 */ 1491 for (; slot < SIOP_NSLOTS; slot++) { 1492 /* 1493 * If cmd if 0x80000000 the slot is free 1494 */ 1495 if (siop_script_read(sc, 1496 (Ent_script_sched_slot0 / 4) + slot * 2) == 1497 0x80000000) 1498 break; 1499 } 1500 if (slot == SIOP_NSLOTS) { 1501 /* 1502 * no more free slot, no need to continue. freeze the queue 1503 * and requeue this command. 1504 */ 1505 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1506 sc->sc_flags |= SCF_CHAN_NOSLOT; 1507 siop_cmd->cmd_c.xs->error = XS_REQUEUE; 1508 siop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1509 siop_scsicmd_end(siop_cmd); 1510 return; 1511 } 1512 #ifdef SIOP_DEBUG_SCHED 1513 printf("using slot %d for DSA 0x%lx\n", slot, 1514 (u_long)siop_cmd->cmd_c.dsa); 1515 #endif 1516 /* mark command as active */ 1517 if (siop_cmd->cmd_c.status == CMDST_READY) 1518 siop_cmd->cmd_c.status = CMDST_ACTIVE; 1519 else 1520 panic("siop_start: bad status"); 1521 siop_lun->siop_tag[siop_cmd->cmd_c.tag].active = siop_cmd; 1522 /* patch scripts with DSA addr */ 1523 dsa = siop_cmd->cmd_c.dsa; 1524 /* first reselect switch, if we have an entry */ 1525 if (siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff > 0) 1526 siop_script_write(sc, 1527 siop_lun->siop_tag[siop_cmd->cmd_c.tag].reseloff + 1, 1528 dsa + sizeof(struct siop_common_xfer) + 1529 Ent_ldsa_reload_dsa); 1530 /* CMD script: MOVE MEMORY addr */ 1531 siop_xfer = (struct siop_xfer*)siop_cmd->cmd_tables; 1532 siop_xfer->resel[E_ldsa_abs_slot_Used[0]] = 1533 htole32(sc->sc_c.sc_scriptaddr + Ent_script_sched_slot0 + slot * 8); 1534 siop_table_sync(siop_cmd, BUS_DMASYNC_PREWRITE); 1535 /* scheduler slot: JUMP ldsa_select */ 1536 siop_script_write(sc, 1537 (Ent_script_sched_slot0 / 4) + slot * 2 + 1, 1538 dsa + sizeof(struct siop_common_xfer) + Ent_ldsa_select); 1539 /* handle timeout */ 1540 if ((siop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1541 /* start exire timer */ 1542 timeout = mstohz(siop_cmd->cmd_c.xs->timeout); 1543 if (timeout == 0) 1544 timeout = 1; 1545 callout_reset( &siop_cmd->cmd_c.xs->xs_callout, 1546 timeout, siop_timeout, siop_cmd); 1547 } 1548 /* 1549 * Change JUMP cmd so that this slot will be handled 1550 */ 1551 siop_script_write(sc, (Ent_script_sched_slot0 / 4) + slot * 2, 1552 0x80080000); 1553 sc->sc_currschedslot = slot; 1554 1555 /* make sure SCRIPT processor will read valid data */ 1556 siop_script_sync(sc,BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1557 /* Signal script it has some work to do */ 1558 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1559 SIOP_ISTAT, ISTAT_SIGP); 1560 /* and wait for IRQ */ 1561 return; 1562 } 1563 1564 void 1565 siop_timeout(v) 1566 void *v; 1567 { 1568 struct siop_cmd *siop_cmd = v; 1569 struct siop_softc *sc = (struct siop_softc *)siop_cmd->cmd_c.siop_sc; 1570 int s; 1571 1572 scsipi_printaddr(siop_cmd->cmd_c.xs->xs_periph); 1573 printf("command timeout, CDB: "); 1574 scsipi_print_cdb(siop_cmd->cmd_c.xs->cmd); 1575 printf("\n"); 1576 1577 s = splbio(); 1578 /* reset the scsi bus */ 1579 siop_resetbus(&sc->sc_c); 1580 1581 /* deactivate callout */ 1582 callout_stop(&siop_cmd->cmd_c.xs->xs_callout); 1583 /* mark command as being timed out; siop_intr will handle it */ 1584 /* 1585 * mark command has being timed out and just return; 1586 * the bus reset will generate an interrupt, 1587 * it will be handled in siop_intr() 1588 */ 1589 siop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1590 splx(s); 1591 return; 1592 1593 } 1594 1595 void 1596 siop_dump_script(sc) 1597 struct siop_softc *sc; 1598 { 1599 int i; 1600 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1601 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1602 le32toh(sc->sc_c.sc_script[i]), 1603 le32toh(sc->sc_c.sc_script[i+1])); 1604 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1605 0xc0000000) { 1606 i++; 1607 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); 1608 } 1609 printf("\n"); 1610 } 1611 } 1612 1613 void 1614 siop_morecbd(sc) 1615 struct siop_softc *sc; 1616 { 1617 int error, i, j, s; 1618 bus_dma_segment_t seg; 1619 int rseg; 1620 struct siop_cbd *newcbd; 1621 struct siop_xfer *xfer; 1622 bus_addr_t dsa; 1623 u_int32_t *scr; 1624 1625 /* allocate a new list head */ 1626 newcbd = malloc(sizeof(struct siop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1627 if (newcbd == NULL) { 1628 printf("%s: can't allocate memory for command descriptors " 1629 "head\n", sc->sc_c.sc_dev.dv_xname); 1630 return; 1631 } 1632 1633 /* allocate cmd list */ 1634 newcbd->cmds = malloc(sizeof(struct siop_cmd) * SIOP_NCMDPB, 1635 M_DEVBUF, M_NOWAIT|M_ZERO); 1636 if (newcbd->cmds == NULL) { 1637 printf("%s: can't allocate memory for command descriptors\n", 1638 sc->sc_c.sc_dev.dv_xname); 1639 goto bad3; 1640 } 1641 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, &seg, 1642 1, &rseg, BUS_DMA_NOWAIT); 1643 if (error) { 1644 printf("%s: unable to allocate cbd DMA memory, error = %d\n", 1645 sc->sc_c.sc_dev.dv_xname, error); 1646 goto bad2; 1647 } 1648 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1649 (void **)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1650 if (error) { 1651 printf("%s: unable to map cbd DMA memory, error = %d\n", 1652 sc->sc_c.sc_dev.dv_xname, error); 1653 goto bad2; 1654 } 1655 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1656 BUS_DMA_NOWAIT, &newcbd->xferdma); 1657 if (error) { 1658 printf("%s: unable to create cbd DMA map, error = %d\n", 1659 sc->sc_c.sc_dev.dv_xname, error); 1660 goto bad1; 1661 } 1662 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, newcbd->xfers, 1663 PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1664 if (error) { 1665 printf("%s: unable to load cbd DMA map, error = %d\n", 1666 sc->sc_c.sc_dev.dv_xname, error); 1667 goto bad0; 1668 } 1669 #ifdef DEBUG 1670 printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, 1671 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1672 #endif 1673 for (i = 0; i < SIOP_NCMDPB; i++) { 1674 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1675 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1676 &newcbd->cmds[i].cmd_c.dmamap_data); 1677 if (error) { 1678 printf("%s: unable to create data DMA map for cbd: " 1679 "error %d\n", 1680 sc->sc_c.sc_dev.dv_xname, error); 1681 goto bad0; 1682 } 1683 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1684 sizeof(struct scsipi_generic), 1, 1685 sizeof(struct scsipi_generic), 0, 1686 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1687 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1688 if (error) { 1689 printf("%s: unable to create cmd DMA map for cbd %d\n", 1690 sc->sc_c.sc_dev.dv_xname, error); 1691 goto bad0; 1692 } 1693 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1694 newcbd->cmds[i].siop_cbdp = newcbd; 1695 xfer = &newcbd->xfers[i]; 1696 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1697 memset(newcbd->cmds[i].cmd_tables, 0, sizeof(struct siop_xfer)); 1698 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1699 i * sizeof(struct siop_xfer); 1700 newcbd->cmds[i].cmd_c.dsa = dsa; 1701 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1702 xfer->siop_tables.t_msgout.count= htole32(1); 1703 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1704 xfer->siop_tables.t_msgin.count= htole32(1); 1705 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1706 offsetof(struct siop_common_xfer, msg_in)); 1707 xfer->siop_tables.t_extmsgin.count= htole32(2); 1708 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1709 offsetof(struct siop_common_xfer, msg_in) + 1); 1710 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1711 offsetof(struct siop_common_xfer, msg_in) + 3); 1712 xfer->siop_tables.t_status.count= htole32(1); 1713 xfer->siop_tables.t_status.addr = htole32(dsa + 1714 offsetof(struct siop_common_xfer, status)); 1715 /* The select/reselect script */ 1716 scr = &xfer->resel[0]; 1717 for (j = 0; j < sizeof(load_dsa) / sizeof(load_dsa[0]); j++) 1718 scr[j] = htole32(load_dsa[j]); 1719 /* 1720 * 0x78000000 is a 'move data8 to reg'. data8 is the second 1721 * octet, reg offset is the third. 1722 */ 1723 scr[Ent_rdsa0 / 4] = 1724 htole32(0x78100000 | ((dsa & 0x000000ff) << 8)); 1725 scr[Ent_rdsa1 / 4] = 1726 htole32(0x78110000 | ( dsa & 0x0000ff00 )); 1727 scr[Ent_rdsa2 / 4] = 1728 htole32(0x78120000 | ((dsa & 0x00ff0000) >> 8)); 1729 scr[Ent_rdsa3 / 4] = 1730 htole32(0x78130000 | ((dsa & 0xff000000) >> 16)); 1731 scr[E_ldsa_abs_reselected_Used[0]] = 1732 htole32(sc->sc_c.sc_scriptaddr + Ent_reselected); 1733 scr[E_ldsa_abs_reselect_Used[0]] = 1734 htole32(sc->sc_c.sc_scriptaddr + Ent_reselect); 1735 scr[E_ldsa_abs_selected_Used[0]] = 1736 htole32(sc->sc_c.sc_scriptaddr + Ent_selected); 1737 scr[E_ldsa_abs_data_Used[0]] = 1738 htole32(dsa + sizeof(struct siop_common_xfer) + 1739 Ent_ldsa_data); 1740 /* JUMP foo, IF FALSE - used by MOVE MEMORY to clear the slot */ 1741 scr[Ent_ldsa_data / 4] = htole32(0x80000000); 1742 s = splbio(); 1743 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1744 splx(s); 1745 #ifdef SIOP_DEBUG 1746 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1747 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1748 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1749 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1750 #endif 1751 } 1752 s = splbio(); 1753 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1754 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1755 splx(s); 1756 return; 1757 bad0: 1758 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1759 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1760 bad1: 1761 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1762 bad2: 1763 free(newcbd->cmds, M_DEVBUF); 1764 bad3: 1765 free(newcbd, M_DEVBUF); 1766 return; 1767 } 1768 1769 struct siop_lunsw * 1770 siop_get_lunsw(sc) 1771 struct siop_softc *sc; 1772 { 1773 struct siop_lunsw *lunsw; 1774 int i; 1775 1776 if (sc->script_free_lo + (sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1777 sc->script_free_hi) 1778 return NULL; 1779 lunsw = TAILQ_FIRST(&sc->lunsw_list); 1780 if (lunsw != NULL) { 1781 #ifdef SIOP_DEBUG 1782 printf("siop_get_lunsw got lunsw at offset %d\n", 1783 lunsw->lunsw_off); 1784 #endif 1785 TAILQ_REMOVE(&sc->lunsw_list, lunsw, next); 1786 return lunsw; 1787 } 1788 lunsw = malloc(sizeof(struct siop_lunsw), M_DEVBUF, M_NOWAIT|M_ZERO); 1789 if (lunsw == NULL) 1790 return NULL; 1791 #ifdef SIOP_DEBUG 1792 printf("allocating lunsw at offset %d\n", sc->script_free_lo); 1793 #endif 1794 if (sc->sc_c.features & SF_CHIP_RAM) { 1795 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1796 sc->script_free_lo * 4, lun_switch, 1797 sizeof(lun_switch) / sizeof(lun_switch[0])); 1798 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 1799 (sc->script_free_lo + E_abs_lunsw_return_Used[0]) * 4, 1800 sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1801 } else { 1802 for (i = 0; i < sizeof(lun_switch) / sizeof(lun_switch[0]); 1803 i++) 1804 sc->sc_c.sc_script[sc->script_free_lo + i] = 1805 htole32(lun_switch[i]); 1806 sc->sc_c.sc_script[ 1807 sc->script_free_lo + E_abs_lunsw_return_Used[0]] = 1808 htole32(sc->sc_c.sc_scriptaddr + Ent_lunsw_return); 1809 } 1810 lunsw->lunsw_off = sc->script_free_lo; 1811 lunsw->lunsw_size = sizeof(lun_switch) / sizeof(lun_switch[0]); 1812 sc->script_free_lo += lunsw->lunsw_size; 1813 siop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1814 return lunsw; 1815 } 1816 1817 void 1818 siop_add_reselsw(sc, target) 1819 struct siop_softc *sc; 1820 int target; 1821 { 1822 int i, j; 1823 struct siop_target *siop_target; 1824 struct siop_lun *siop_lun; 1825 1826 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1827 /* 1828 * add an entry to resel switch 1829 */ 1830 siop_script_sync(sc, BUS_DMASYNC_POSTWRITE); 1831 for (i = 0; i < 15; i++) { 1832 siop_target->reseloff = Ent_resel_targ0 / 4 + i * 2; 1833 if ((siop_script_read(sc, siop_target->reseloff) & 0xff) 1834 == 0xff) { /* it's free */ 1835 #ifdef SIOP_DEBUG 1836 printf("siop: target %d slot %d offset %d\n", 1837 target, i, siop_target->reseloff); 1838 #endif 1839 /* JUMP abs_foo, IF target | 0x80; */ 1840 siop_script_write(sc, siop_target->reseloff, 1841 0x800c0080 | target); 1842 siop_script_write(sc, siop_target->reseloff + 1, 1843 sc->sc_c.sc_scriptaddr + 1844 siop_target->lunsw->lunsw_off * 4 + 1845 Ent_lun_switch_entry); 1846 break; 1847 } 1848 } 1849 if (i == 15) /* no free slot, shouldn't happen */ 1850 panic("siop: resel switch full"); 1851 1852 sc->sc_ntargets++; 1853 for (i = 0; i < 8; i++) { 1854 siop_lun = siop_target->siop_lun[i]; 1855 if (siop_lun == NULL) 1856 continue; 1857 if (siop_lun->reseloff > 0) { 1858 siop_lun->reseloff = 0; 1859 for (j = 0; j < SIOP_NTAG; j++) 1860 siop_lun->siop_tag[j].reseloff = 0; 1861 siop_add_dev(sc, target, i); 1862 } 1863 } 1864 siop_update_scntl3(sc, sc->sc_c.targets[target]); 1865 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1866 } 1867 1868 void 1869 siop_update_scntl3(sc, _siop_target) 1870 struct siop_softc *sc; 1871 struct siop_common_target *_siop_target; 1872 { 1873 struct siop_target *siop_target = (struct siop_target *)_siop_target; 1874 /* MOVE target->id >> 24 TO SCNTL3 */ 1875 siop_script_write(sc, 1876 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4), 1877 0x78030000 | ((siop_target->target_c.id >> 16) & 0x0000ff00)); 1878 /* MOVE target->id >> 8 TO SXFER */ 1879 siop_script_write(sc, 1880 siop_target->lunsw->lunsw_off + (Ent_restore_scntl3 / 4) + 2, 1881 0x78050000 | (siop_target->target_c.id & 0x0000ff00)); 1882 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 1883 } 1884 1885 void 1886 siop_add_dev(sc, target, lun) 1887 struct siop_softc *sc; 1888 int target; 1889 int lun; 1890 { 1891 struct siop_lunsw *lunsw; 1892 struct siop_target *siop_target = 1893 (struct siop_target *)sc->sc_c.targets[target]; 1894 struct siop_lun *siop_lun = siop_target->siop_lun[lun]; 1895 int i, ntargets; 1896 1897 if (siop_lun->reseloff > 0) 1898 return; 1899 lunsw = siop_target->lunsw; 1900 if ((lunsw->lunsw_off + lunsw->lunsw_size) < sc->script_free_lo) { 1901 /* 1902 * can't extend this slot. Probably not worth trying to deal 1903 * with this case 1904 */ 1905 #ifdef DEBUG 1906 printf("%s:%d:%d: can't allocate a lun sw slot\n", 1907 sc->sc_c.sc_dev.dv_xname, target, lun); 1908 #endif 1909 return; 1910 } 1911 /* count how many free targets we still have to probe */ 1912 ntargets = sc->sc_c.sc_chan.chan_ntargets - 1 - sc->sc_ntargets; 1913 1914 /* 1915 * we need 8 bytes for the lun sw additional entry, and 1916 * eventually sizeof(tag_switch) for the tag switch entry. 1917 * Keep enough free space for the free targets that could be 1918 * probed later. 1919 */ 1920 if (sc->script_free_lo + 2 + 1921 (ntargets * sizeof(lun_switch) / sizeof(lun_switch[0])) >= 1922 ((siop_target->target_c.flags & TARF_TAG) ? 1923 sc->script_free_hi - (sizeof(tag_switch) / sizeof(tag_switch[0])) : 1924 sc->script_free_hi)) { 1925 /* 1926 * not enough space, probably not worth dealing with it. 1927 * We can hold 13 tagged-queuing capable devices in the 4k RAM. 1928 */ 1929 #ifdef DEBUG 1930 printf("%s:%d:%d: not enough memory for a lun sw slot\n", 1931 sc->sc_c.sc_dev.dv_xname, target, lun); 1932 #endif 1933 return; 1934 } 1935 #ifdef SIOP_DEBUG 1936 printf("%s:%d:%d: allocate lun sw entry\n", 1937 sc->sc_c.sc_dev.dv_xname, target, lun); 1938 #endif 1939 /* INT int_resellun */ 1940 siop_script_write(sc, sc->script_free_lo, 0x98080000); 1941 siop_script_write(sc, sc->script_free_lo + 1, A_int_resellun); 1942 /* Now the slot entry: JUMP abs_foo, IF lun */ 1943 siop_script_write(sc, sc->script_free_lo - 2, 1944 0x800c0000 | lun); 1945 siop_script_write(sc, sc->script_free_lo - 1, 0); 1946 siop_lun->reseloff = sc->script_free_lo - 2; 1947 lunsw->lunsw_size += 2; 1948 sc->script_free_lo += 2; 1949 if (siop_target->target_c.flags & TARF_TAG) { 1950 /* we need a tag switch */ 1951 sc->script_free_hi -= 1952 sizeof(tag_switch) / sizeof(tag_switch[0]); 1953 if (sc->sc_c.features & SF_CHIP_RAM) { 1954 bus_space_write_region_4(sc->sc_c.sc_ramt, 1955 sc->sc_c.sc_ramh, 1956 sc->script_free_hi * 4, tag_switch, 1957 sizeof(tag_switch) / sizeof(tag_switch[0])); 1958 } else { 1959 for(i = 0; 1960 i < sizeof(tag_switch) / sizeof(tag_switch[0]); 1961 i++) { 1962 sc->sc_c.sc_script[sc->script_free_hi + i] = 1963 htole32(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(sc, target, lun) 1985 struct siop_softc *sc; 1986 int target; 1987 int lun; 1988 { 1989 int i; 1990 struct siop_target *siop_target; 1991 #ifdef SIOP_DEBUG 1992 printf("%s:%d:%d: free lun sw entry\n", 1993 sc->sc_c.sc_dev.dv_xname, target, lun); 1994 #endif 1995 if (sc->sc_c.targets[target] == NULL) 1996 return; 1997 siop_target = (struct siop_target *)sc->sc_c.targets[target]; 1998 free(siop_target->siop_lun[lun], M_DEVBUF); 1999 siop_target->siop_lun[lun] = NULL; 2000 /* XXX compact sw entry too ? */ 2001 /* check if we can free the whole target */ 2002 for (i = 0; i < 8; i++) { 2003 if (siop_target->siop_lun[i] != NULL) 2004 return; 2005 } 2006 #ifdef SIOP_DEBUG 2007 printf("%s: free siop_target for target %d lun %d lunsw offset %d\n", 2008 sc->sc_c.sc_dev.dv_xname, target, lun, 2009 siop_target->lunsw->lunsw_off); 2010 #endif 2011 /* 2012 * nothing here, free the target struct and resel 2013 * switch entry 2014 */ 2015 siop_script_write(sc, siop_target->reseloff, 0x800c00ff); 2016 siop_script_sync(sc, BUS_DMASYNC_PREWRITE); 2017 TAILQ_INSERT_TAIL(&sc->lunsw_list, siop_target->lunsw, next); 2018 free(sc->sc_c.targets[target], M_DEVBUF); 2019 sc->sc_c.targets[target] = NULL; 2020 sc->sc_ntargets--; 2021 } 2022 2023 #ifdef SIOP_STATS 2024 void 2025 siop_printstats() 2026 { 2027 printf("siop_stat_intr %d\n", siop_stat_intr); 2028 printf("siop_stat_intr_shortxfer %d\n", siop_stat_intr_shortxfer); 2029 printf("siop_stat_intr_xferdisc %d\n", siop_stat_intr_xferdisc); 2030 printf("siop_stat_intr_sdp %d\n", siop_stat_intr_sdp); 2031 printf("siop_stat_intr_saveoffset %d\n", siop_stat_intr_saveoffset); 2032 printf("siop_stat_intr_done %d\n", siop_stat_intr_done); 2033 printf("siop_stat_intr_lunresel %d\n", siop_stat_intr_lunresel); 2034 printf("siop_stat_intr_qfull %d\n", siop_stat_intr_qfull); 2035 } 2036 #endif 2037
Indexes created Fri Sep 26 20:09:58 GMT 2025