esiop.c revision 1.33
1 /* $NetBSD: esiop.c,v 1.33 2005/03/23 21:23:15 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 2002 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: esiop.c,v 1.33 2005/03/23 21:23:15 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/esiop.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/esiopvar.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 esiop_xfer)) 81 82 void esiop_reset(struct esiop_softc *); 83 void esiop_checkdone(struct esiop_softc *); 84 void esiop_handle_reset(struct esiop_softc *); 85 void esiop_scsicmd_end(struct esiop_cmd *, int); 86 void esiop_unqueue(struct esiop_softc *, int, int); 87 int esiop_handle_qtag_reject(struct esiop_cmd *); 88 static void esiop_start(struct esiop_softc *, struct esiop_cmd *); 89 void esiop_timeout(void *); 90 void esiop_scsipi_request(struct scsipi_channel *, 91 scsipi_adapter_req_t, void *); 92 void esiop_dump_script(struct esiop_softc *); 93 void esiop_morecbd(struct esiop_softc *); 94 void esiop_moretagtbl(struct esiop_softc *); 95 void siop_add_reselsw(struct esiop_softc *, int); 96 void esiop_target_register(struct esiop_softc *, u_int32_t); 97 98 void esiop_update_scntl3(struct esiop_softc *, struct siop_common_target *); 99 100 #ifdef SIOP_STATS 101 static int esiop_stat_intr = 0; 102 static int esiop_stat_intr_shortxfer = 0; 103 static int esiop_stat_intr_sdp = 0; 104 static int esiop_stat_intr_done = 0; 105 static int esiop_stat_intr_xferdisc = 0; 106 static int esiop_stat_intr_lunresel = 0; 107 static int esiop_stat_intr_qfull = 0; 108 void esiop_printstats(void); 109 #define INCSTAT(x) x++ 110 #else 111 #define INCSTAT(x) 112 #endif 113 114 static __inline__ void esiop_script_sync(struct esiop_softc *, int); 115 static __inline__ void 116 esiop_script_sync(sc, ops) 117 struct esiop_softc *sc; 118 int ops; 119 { 120 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) 121 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 122 PAGE_SIZE, ops); 123 } 124 125 static __inline__ u_int32_t esiop_script_read(struct esiop_softc *, u_int); 126 static __inline__ u_int32_t 127 esiop_script_read(sc, offset) 128 struct esiop_softc *sc; 129 u_int offset; 130 { 131 if (sc->sc_c.features & SF_CHIP_RAM) { 132 return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 133 offset * 4); 134 } else { 135 return le32toh(sc->sc_c.sc_script[offset]); 136 } 137 } 138 139 static __inline__ void esiop_script_write(struct esiop_softc *, u_int, 140 u_int32_t); 141 static __inline__ void 142 esiop_script_write(sc, offset, val) 143 struct esiop_softc *sc; 144 u_int offset; 145 u_int32_t val; 146 { 147 if (sc->sc_c.features & SF_CHIP_RAM) { 148 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 149 offset * 4, val); 150 } else { 151 sc->sc_c.sc_script[offset] = htole32(val); 152 } 153 } 154 155 void 156 esiop_attach(sc) 157 struct esiop_softc *sc; 158 { 159 struct esiop_dsatbl *tagtbl_donering; 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->free_tagtbl); 167 TAILQ_INIT(&sc->tag_tblblk); 168 sc->sc_currschedslot = 0; 169 #ifdef SIOP_DEBUG 170 aprint_debug("%s: script size = %d, PHY addr=0x%x, VIRT=%p\n", 171 sc->sc_c.sc_dev.dv_xname, (int)sizeof(esiop_script), 172 (u_int32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); 173 #endif 174 175 sc->sc_c.sc_adapt.adapt_max_periph = ESIOP_NTAG; 176 sc->sc_c.sc_adapt.adapt_request = esiop_scsipi_request; 177 178 /* 179 * get space for the CMD done slot. For this we use a tag table entry. 180 * It's the same size and allows us to not waste 3/4 of a page 181 */ 182 #ifdef DIAGNOSTIC 183 if (ESIOP_NTAG != A_ndone_slots) { 184 aprint_error("%s: size of tag DSA table different from the done" 185 " ring\n", sc->sc_c.sc_dev.dv_xname); 186 return; 187 } 188 #endif 189 esiop_moretagtbl(sc); 190 tagtbl_donering = TAILQ_FIRST(&sc->free_tagtbl); 191 if (tagtbl_donering == NULL) { 192 aprint_error("%s: no memory for command done ring\n", 193 sc->sc_c.sc_dev.dv_xname); 194 return; 195 } 196 TAILQ_REMOVE(&sc->free_tagtbl, tagtbl_donering, next); 197 sc->sc_done_map = tagtbl_donering->tblblk->blkmap; 198 sc->sc_done_offset = tagtbl_donering->tbl_offset; 199 sc->sc_done_slot = &tagtbl_donering->tbl[0]; 200 201 /* Do a bus reset, so that devices fall back to narrow/async */ 202 siop_resetbus(&sc->sc_c); 203 /* 204 * siop_reset() will reset the chip, thus clearing pending interrupts 205 */ 206 esiop_reset(sc); 207 #ifdef DUMP_SCRIPT 208 esiop_dump_script(sc); 209 #endif 210 211 config_found((struct device*)sc, &sc->sc_c.sc_chan, scsiprint); 212 } 213 214 void 215 esiop_reset(sc) 216 struct esiop_softc *sc; 217 { 218 int i, j; 219 u_int32_t addr; 220 u_int32_t msgin_addr, sem_addr; 221 222 siop_common_reset(&sc->sc_c); 223 224 /* 225 * we copy the script at the beggining of RAM. Then there is 4 bytes 226 * for messages in, and 4 bytes for semaphore 227 */ 228 sc->sc_free_offset = sizeof(esiop_script) / sizeof(esiop_script[0]); 229 msgin_addr = 230 sc->sc_free_offset * sizeof(u_int32_t) + sc->sc_c.sc_scriptaddr; 231 sc->sc_free_offset += 1; 232 sc->sc_semoffset = sc->sc_free_offset; 233 sem_addr = 234 sc->sc_semoffset * sizeof(u_int32_t) + sc->sc_c.sc_scriptaddr; 235 sc->sc_free_offset += 1; 236 /* then we have the scheduler ring */ 237 sc->sc_shedoffset = sc->sc_free_offset; 238 sc->sc_free_offset += A_ncmd_slots * CMD_SLOTSIZE; 239 /* then the targets DSA table */ 240 sc->sc_target_table_offset = sc->sc_free_offset; 241 sc->sc_free_offset += sc->sc_c.sc_chan.chan_ntargets; 242 /* copy and patch the script */ 243 if (sc->sc_c.features & SF_CHIP_RAM) { 244 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, 245 esiop_script, 246 sizeof(esiop_script) / sizeof(esiop_script[0])); 247 for (j = 0; j < 248 (sizeof(E_tlq_offset_Used) / sizeof(E_tlq_offset_Used[0])); 249 j++) { 250 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 251 E_tlq_offset_Used[j] * 4, 252 sizeof(struct siop_common_xfer)); 253 } 254 for (j = 0; j < 255 (sizeof(E_abs_msgin2_Used) / sizeof(E_abs_msgin2_Used[0])); 256 j++) { 257 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 258 E_abs_msgin2_Used[j] * 4, msgin_addr); 259 } 260 for (j = 0; j < 261 (sizeof(E_abs_sem_Used) / sizeof(E_abs_sem_Used[0])); 262 j++) { 263 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 264 E_abs_sem_Used[j] * 4, sem_addr); 265 } 266 267 if (sc->sc_c.features & SF_CHIP_LED0) { 268 bus_space_write_region_4(sc->sc_c.sc_ramt, 269 sc->sc_c.sc_ramh, 270 Ent_led_on1, esiop_led_on, 271 sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); 272 bus_space_write_region_4(sc->sc_c.sc_ramt, 273 sc->sc_c.sc_ramh, 274 Ent_led_on2, esiop_led_on, 275 sizeof(esiop_led_on) / sizeof(esiop_led_on[0])); 276 bus_space_write_region_4(sc->sc_c.sc_ramt, 277 sc->sc_c.sc_ramh, 278 Ent_led_off, esiop_led_off, 279 sizeof(esiop_led_off) / sizeof(esiop_led_off[0])); 280 } 281 } else { 282 for (j = 0; 283 j < (sizeof(esiop_script) / sizeof(esiop_script[0])); j++) { 284 sc->sc_c.sc_script[j] = htole32(esiop_script[j]); 285 } 286 for (j = 0; j < 287 (sizeof(E_tlq_offset_Used) / sizeof(E_tlq_offset_Used[0])); 288 j++) { 289 sc->sc_c.sc_script[E_tlq_offset_Used[j]] = 290 htole32(sizeof(struct siop_common_xfer)); 291 } 292 for (j = 0; j < 293 (sizeof(E_abs_msgin2_Used) / sizeof(E_abs_msgin2_Used[0])); 294 j++) { 295 sc->sc_c.sc_script[E_abs_msgin2_Used[j]] = 296 htole32(msgin_addr); 297 } 298 for (j = 0; j < 299 (sizeof(E_abs_sem_Used) / sizeof(E_abs_sem_Used[0])); 300 j++) { 301 sc->sc_c.sc_script[E_abs_sem_Used[j]] = 302 htole32(sem_addr); 303 } 304 305 if (sc->sc_c.features & SF_CHIP_LED0) { 306 for (j = 0; j < (sizeof(esiop_led_on) / 307 sizeof(esiop_led_on[0])); j++) 308 sc->sc_c.sc_script[ 309 Ent_led_on1 / sizeof(esiop_led_on[0]) + j 310 ] = htole32(esiop_led_on[j]); 311 for (j = 0; j < (sizeof(esiop_led_on) / 312 sizeof(esiop_led_on[0])); j++) 313 sc->sc_c.sc_script[ 314 Ent_led_on2 / sizeof(esiop_led_on[0]) + j 315 ] = htole32(esiop_led_on[j]); 316 for (j = 0; j < (sizeof(esiop_led_off) / 317 sizeof(esiop_led_off[0])); j++) 318 sc->sc_c.sc_script[ 319 Ent_led_off / sizeof(esiop_led_off[0]) + j 320 ] = htole32(esiop_led_off[j]); 321 } 322 } 323 /* get base of scheduler ring */ 324 addr = sc->sc_c.sc_scriptaddr + sc->sc_shedoffset * sizeof(u_int32_t); 325 /* init scheduler */ 326 for (i = 0; i < A_ncmd_slots; i++) { 327 esiop_script_write(sc, 328 sc->sc_shedoffset + i * CMD_SLOTSIZE, A_f_cmd_free); 329 } 330 sc->sc_currschedslot = 0; 331 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); 332 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHD, addr); 333 /* 334 * 0x78000000 is a 'move data8 to reg'. data8 is the second 335 * octet, reg offset is the third. 336 */ 337 esiop_script_write(sc, Ent_cmdr0 / 4, 338 0x78640000 | ((addr & 0x000000ff) << 8)); 339 esiop_script_write(sc, Ent_cmdr1 / 4, 340 0x78650000 | ((addr & 0x0000ff00) )); 341 esiop_script_write(sc, Ent_cmdr2 / 4, 342 0x78660000 | ((addr & 0x00ff0000) >> 8)); 343 esiop_script_write(sc, Ent_cmdr3 / 4, 344 0x78670000 | ((addr & 0xff000000) >> 16)); 345 /* done ring */ 346 for (i = 0; i < A_ndone_slots; i++) 347 sc->sc_done_slot[i] = 0; 348 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 349 sc->sc_done_offset, A_ndone_slots * sizeof(u_int32_t), 350 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 351 addr = sc->sc_done_map->dm_segs[0].ds_addr + sc->sc_done_offset; 352 sc->sc_currdoneslot = 0; 353 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE + 2, 0); 354 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHF, addr); 355 esiop_script_write(sc, Ent_doner0 / 4, 356 0x786c0000 | ((addr & 0x000000ff) << 8)); 357 esiop_script_write(sc, Ent_doner1 / 4, 358 0x786d0000 | ((addr & 0x0000ff00) )); 359 esiop_script_write(sc, Ent_doner2 / 4, 360 0x786e0000 | ((addr & 0x00ff0000) >> 8)); 361 esiop_script_write(sc, Ent_doner3 / 4, 362 0x786f0000 | ((addr & 0xff000000) >> 16)); 363 364 /* set flags */ 365 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC, 0); 366 /* write pointer of base of target DSA table */ 367 addr = (sc->sc_target_table_offset * sizeof(u_int32_t)) + 368 sc->sc_c.sc_scriptaddr; 369 esiop_script_write(sc, (Ent_load_targtable / 4) + 0, 370 esiop_script_read(sc,(Ent_load_targtable / 4) + 0) | 371 ((addr & 0x000000ff) << 8)); 372 esiop_script_write(sc, (Ent_load_targtable / 4) + 2, 373 esiop_script_read(sc,(Ent_load_targtable / 4) + 2) | 374 ((addr & 0x0000ff00) )); 375 esiop_script_write(sc, (Ent_load_targtable / 4) + 4, 376 esiop_script_read(sc,(Ent_load_targtable / 4) + 4) | 377 ((addr & 0x00ff0000) >> 8)); 378 esiop_script_write(sc, (Ent_load_targtable / 4) + 6, 379 esiop_script_read(sc,(Ent_load_targtable / 4) + 6) | 380 ((addr & 0xff000000) >> 16)); 381 #ifdef SIOP_DEBUG 382 printf("%s: target table offset %d free offset %d\n", 383 sc->sc_c.sc_dev.dv_xname, sc->sc_target_table_offset, 384 sc->sc_free_offset); 385 #endif 386 387 /* register existing targets */ 388 for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { 389 if (sc->sc_c.targets[i]) 390 esiop_target_register(sc, i); 391 } 392 /* start script */ 393 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { 394 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 395 PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 396 } 397 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, 398 sc->sc_c.sc_scriptaddr + Ent_reselect); 399 } 400 401 #if 0 402 #define CALL_SCRIPT(ent) do {\ 403 printf ("start script DSA 0x%lx DSP 0x%lx\n", \ 404 esiop_cmd->cmd_c.dsa, \ 405 sc->sc_c.sc_scriptaddr + ent); \ 406 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 407 } while (0) 408 #else 409 #define CALL_SCRIPT(ent) do {\ 410 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 411 } while (0) 412 #endif 413 414 int 415 esiop_intr(v) 416 void *v; 417 { 418 struct esiop_softc *sc = v; 419 struct esiop_target *esiop_target; 420 struct esiop_cmd *esiop_cmd; 421 struct esiop_lun *esiop_lun; 422 struct scsipi_xfer *xs; 423 int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ 424 u_int32_t irqcode; 425 int need_reset = 0; 426 int offset, target, lun, tag; 427 u_int32_t tflags; 428 u_int32_t addr; 429 int freetarget = 0; 430 int slot; 431 int retval = 0; 432 433 again: 434 istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); 435 if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) { 436 return retval; 437 } 438 retval = 1; 439 INCSTAT(esiop_stat_intr); 440 esiop_checkdone(sc); 441 if (istat & ISTAT_INTF) { 442 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 443 SIOP_ISTAT, ISTAT_INTF); 444 goto again; 445 } 446 447 if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == 448 (ISTAT_DIP | ISTAT_ABRT)) { 449 /* clear abort */ 450 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 451 SIOP_ISTAT, 0); 452 } 453 454 /* get CMD from T/L/Q */ 455 tflags = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 456 SIOP_SCRATCHC); 457 #ifdef SIOP_DEBUG_INTR 458 printf("interrupt, istat=0x%x tflags=0x%x " 459 "DSA=0x%x DSP=0x%lx\n", istat, tflags, 460 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 461 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 462 SIOP_DSP) - 463 sc->sc_c.sc_scriptaddr)); 464 #endif 465 target = (tflags & A_f_c_target) ? ((tflags >> 8) & 0xff) : -1; 466 if (target > sc->sc_c.sc_chan.chan_ntargets) target = -1; 467 lun = (tflags & A_f_c_lun) ? ((tflags >> 16) & 0xff) : -1; 468 if (lun > sc->sc_c.sc_chan.chan_nluns) lun = -1; 469 tag = (tflags & A_f_c_tag) ? ((tflags >> 24) & 0xff) : -1; 470 471 if (target >= 0 && lun >= 0) { 472 esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; 473 if (esiop_target == NULL) { 474 printf("esiop_target (target %d) not valid\n", target); 475 goto none; 476 } 477 esiop_lun = esiop_target->esiop_lun[lun]; 478 if (esiop_lun == NULL) { 479 printf("esiop_lun (target %d lun %d) not valid\n", 480 target, lun); 481 goto none; 482 } 483 esiop_cmd = 484 (tag >= 0) ? esiop_lun->tactive[tag] : esiop_lun->active; 485 if (esiop_cmd == NULL) { 486 printf("esiop_cmd (target %d lun %d tag %d) not valid\n", 487 target, lun, tag); 488 goto none; 489 } 490 xs = esiop_cmd->cmd_c.xs; 491 #ifdef DIAGNOSTIC 492 if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { 493 printf("esiop_cmd (target %d lun %d) " 494 "not active (%d)\n", target, lun, 495 esiop_cmd->cmd_c.status); 496 goto none; 497 } 498 #endif 499 esiop_table_sync(esiop_cmd, 500 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 501 } else { 502 none: 503 xs = NULL; 504 esiop_target = NULL; 505 esiop_lun = NULL; 506 esiop_cmd = NULL; 507 } 508 if (istat & ISTAT_DIP) { 509 dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 510 SIOP_DSTAT); 511 if (dstat & DSTAT_ABRT) { 512 /* was probably generated by a bus reset IOCTL */ 513 if ((dstat & DSTAT_DFE) == 0) 514 siop_clearfifo(&sc->sc_c); 515 goto reset; 516 } 517 if (dstat & DSTAT_SSI) { 518 printf("single step dsp 0x%08x dsa 0x08%x\n", 519 (int)(bus_space_read_4(sc->sc_c.sc_rt, 520 sc->sc_c.sc_rh, SIOP_DSP) - 521 sc->sc_c.sc_scriptaddr), 522 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 523 SIOP_DSA)); 524 if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && 525 (istat & ISTAT_SIP) == 0) { 526 bus_space_write_1(sc->sc_c.sc_rt, 527 sc->sc_c.sc_rh, SIOP_DCNTL, 528 bus_space_read_1(sc->sc_c.sc_rt, 529 sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); 530 } 531 return 1; 532 } 533 534 if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { 535 printf("%s: DMA IRQ:", sc->sc_c.sc_dev.dv_xname); 536 if (dstat & DSTAT_IID) 537 printf(" Illegal instruction"); 538 if (dstat & DSTAT_BF) 539 printf(" bus fault"); 540 if (dstat & DSTAT_MDPE) 541 printf(" parity"); 542 if (dstat & DSTAT_DFE) 543 printf(" DMA fifo empty"); 544 else 545 siop_clearfifo(&sc->sc_c); 546 printf(", DSP=0x%x DSA=0x%x: ", 547 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 548 SIOP_DSP) - sc->sc_c.sc_scriptaddr), 549 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 550 if (esiop_cmd) 551 printf("T/L/Q=%d/%d/%d last msg_in=0x%x status=0x%x\n", 552 target, lun, tag, esiop_cmd->cmd_tables->msg_in[0], 553 le32toh(esiop_cmd->cmd_tables->status)); 554 else 555 printf(" current T/L/Q invalid\n"); 556 need_reset = 1; 557 } 558 } 559 if (istat & ISTAT_SIP) { 560 if (istat & ISTAT_DIP) 561 delay(10); 562 /* 563 * Can't read sist0 & sist1 independently, or we have to 564 * insert delay 565 */ 566 sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 567 SIOP_SIST0); 568 sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 569 SIOP_SSTAT1); 570 #ifdef SIOP_DEBUG_INTR 571 printf("scsi interrupt, sist=0x%x sstat1=0x%x " 572 "DSA=0x%x DSP=0x%lx\n", sist, sstat1, 573 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 574 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 575 SIOP_DSP) - 576 sc->sc_c.sc_scriptaddr)); 577 #endif 578 if (sist & SIST0_RST) { 579 esiop_handle_reset(sc); 580 /* no table to flush here */ 581 return 1; 582 } 583 if (sist & SIST0_SGE) { 584 if (esiop_cmd) 585 scsipi_printaddr(xs->xs_periph); 586 else 587 printf("%s:", sc->sc_c.sc_dev.dv_xname); 588 printf("scsi gross error\n"); 589 if (esiop_target) 590 esiop_target->target_c.flags &= ~TARF_DT; 591 #ifdef DEBUG 592 printf("DSA=0x%x DSP=0x%lx\n", 593 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 594 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 595 SIOP_DSP) - 596 sc->sc_c.sc_scriptaddr)); 597 printf("SDID 0x%x SCNTL3 0x%x SXFER 0x%x SCNTL4 0x%x\n", 598 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SDID), 599 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCNTL3), 600 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SXFER), 601 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCNTL4)); 602 603 #endif 604 goto reset; 605 } 606 if ((sist & SIST0_MA) && need_reset == 0) { 607 if (esiop_cmd) { 608 int scratchc0; 609 dstat = bus_space_read_1(sc->sc_c.sc_rt, 610 sc->sc_c.sc_rh, SIOP_DSTAT); 611 /* 612 * first restore DSA, in case we were in a S/G 613 * operation. 614 */ 615 bus_space_write_4(sc->sc_c.sc_rt, 616 sc->sc_c.sc_rh, 617 SIOP_DSA, esiop_cmd->cmd_c.dsa); 618 scratchc0 = bus_space_read_1(sc->sc_c.sc_rt, 619 sc->sc_c.sc_rh, SIOP_SCRATCHC); 620 switch (sstat1 & SSTAT1_PHASE_MASK) { 621 case SSTAT1_PHASE_STATUS: 622 /* 623 * previous phase may be aborted for any reason 624 * ( for example, the target has less data to 625 * transfer than requested). Compute resid and 626 * just go to status, the command should 627 * terminate. 628 */ 629 INCSTAT(esiop_stat_intr_shortxfer); 630 if (scratchc0 & A_f_c_data) 631 siop_ma(&esiop_cmd->cmd_c); 632 else if ((dstat & DSTAT_DFE) == 0) 633 siop_clearfifo(&sc->sc_c); 634 CALL_SCRIPT(Ent_status); 635 return 1; 636 case SSTAT1_PHASE_MSGIN: 637 /* 638 * target may be ready to disconnect 639 * Compute resid which would be used later 640 * if a save data pointer is needed. 641 */ 642 INCSTAT(esiop_stat_intr_xferdisc); 643 if (scratchc0 & A_f_c_data) 644 siop_ma(&esiop_cmd->cmd_c); 645 else if ((dstat & DSTAT_DFE) == 0) 646 siop_clearfifo(&sc->sc_c); 647 bus_space_write_1(sc->sc_c.sc_rt, 648 sc->sc_c.sc_rh, SIOP_SCRATCHC, 649 scratchc0 & ~A_f_c_data); 650 CALL_SCRIPT(Ent_msgin); 651 return 1; 652 } 653 printf("%s: unexpected phase mismatch %d\n", 654 sc->sc_c.sc_dev.dv_xname, 655 sstat1 & SSTAT1_PHASE_MASK); 656 } else { 657 printf("%s: phase mismatch without command\n", 658 sc->sc_c.sc_dev.dv_xname); 659 } 660 need_reset = 1; 661 } 662 if (sist & SIST0_PAR) { 663 /* parity error, reset */ 664 if (esiop_cmd) 665 scsipi_printaddr(xs->xs_periph); 666 else 667 printf("%s:", sc->sc_c.sc_dev.dv_xname); 668 printf("parity error\n"); 669 if (esiop_target) 670 esiop_target->target_c.flags &= ~TARF_DT; 671 goto reset; 672 } 673 if ((sist & (SIST1_STO << 8)) && need_reset == 0) { 674 /* 675 * selection time out, assume there's no device here 676 * We also have to update the ring pointer ourselve 677 */ 678 slot = bus_space_read_1(sc->sc_c.sc_rt, 679 sc->sc_c.sc_rh, SIOP_SCRATCHE); 680 esiop_script_sync(sc, 681 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 682 #ifdef SIOP_DEBUG_SCHED 683 printf("sel timeout target %d, slot %d\n", target, slot); 684 #endif 685 /* 686 * mark this slot as free, and advance to next slot 687 */ 688 esiop_script_write(sc, 689 sc->sc_shedoffset + slot * CMD_SLOTSIZE, 690 A_f_cmd_free); 691 addr = bus_space_read_4(sc->sc_c.sc_rt, 692 sc->sc_c.sc_rh, SIOP_SCRATCHD); 693 if (slot < (A_ncmd_slots - 1)) { 694 bus_space_write_1(sc->sc_c.sc_rt, 695 sc->sc_c.sc_rh, SIOP_SCRATCHE, slot + 1); 696 addr = addr + sizeof(struct esiop_slot); 697 } else { 698 bus_space_write_1(sc->sc_c.sc_rt, 699 sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); 700 addr = sc->sc_c.sc_scriptaddr + 701 sc->sc_shedoffset * sizeof(u_int32_t); 702 } 703 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 704 SIOP_SCRATCHD, addr); 705 esiop_script_sync(sc, 706 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 707 if (esiop_cmd) { 708 esiop_cmd->cmd_c.status = CMDST_DONE; 709 xs->error = XS_SELTIMEOUT; 710 freetarget = 1; 711 goto end; 712 } else { 713 printf("%s: selection timeout without " 714 "command, target %d (sdid 0x%x), " 715 "slot %d\n", 716 sc->sc_c.sc_dev.dv_xname, target, 717 bus_space_read_1(sc->sc_c.sc_rt, 718 sc->sc_c.sc_rh, SIOP_SDID), slot); 719 need_reset = 1; 720 } 721 } 722 if (sist & SIST0_UDC) { 723 /* 724 * unexpected disconnect. Usually the target signals 725 * a fatal condition this way. Attempt to get sense. 726 */ 727 if (esiop_cmd) { 728 esiop_cmd->cmd_tables->status = 729 htole32(SCSI_CHECK); 730 goto end; 731 } 732 printf("%s: unexpected disconnect without " 733 "command\n", sc->sc_c.sc_dev.dv_xname); 734 goto reset; 735 } 736 if (sist & (SIST1_SBMC << 8)) { 737 /* SCSI bus mode change */ 738 if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) 739 goto reset; 740 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { 741 /* 742 * we have a script interrupt, it will 743 * restart the script. 744 */ 745 goto scintr; 746 } 747 /* 748 * else we have to restart it ourselve, at the 749 * interrupted instruction. 750 */ 751 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 752 SIOP_DSP, 753 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 754 SIOP_DSP) - 8); 755 return 1; 756 } 757 /* Else it's an unhandled exception (for now). */ 758 printf("%s: unhandled scsi interrupt, sist=0x%x sstat1=0x%x " 759 "DSA=0x%x DSP=0x%x\n", sc->sc_c.sc_dev.dv_xname, sist, 760 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 761 SIOP_SSTAT1), 762 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 763 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 764 SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 765 if (esiop_cmd) { 766 esiop_cmd->cmd_c.status = CMDST_DONE; 767 xs->error = XS_SELTIMEOUT; 768 goto end; 769 } 770 need_reset = 1; 771 } 772 if (need_reset) { 773 reset: 774 /* fatal error, reset the bus */ 775 siop_resetbus(&sc->sc_c); 776 /* no table to flush here */ 777 return 1; 778 } 779 780 scintr: 781 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ 782 irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 783 SIOP_DSPS); 784 #ifdef SIOP_DEBUG_INTR 785 printf("script interrupt 0x%x\n", irqcode); 786 #endif 787 /* 788 * no command, or an inactive command is only valid for a 789 * reselect interrupt 790 */ 791 if ((irqcode & 0x80) == 0) { 792 if (esiop_cmd == NULL) { 793 printf( 794 "%s: script interrupt (0x%x) with invalid DSA !!!\n", 795 sc->sc_c.sc_dev.dv_xname, irqcode); 796 goto reset; 797 } 798 if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { 799 printf("%s: command with invalid status " 800 "(IRQ code 0x%x current status %d) !\n", 801 sc->sc_c.sc_dev.dv_xname, 802 irqcode, esiop_cmd->cmd_c.status); 803 xs = NULL; 804 } 805 } 806 switch(irqcode) { 807 case A_int_err: 808 printf("error, DSP=0x%x\n", 809 (int)(bus_space_read_4(sc->sc_c.sc_rt, 810 sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 811 if (xs) { 812 xs->error = XS_SELTIMEOUT; 813 goto end; 814 } else { 815 goto reset; 816 } 817 case A_int_msgin: 818 { 819 int msgin = bus_space_read_1(sc->sc_c.sc_rt, 820 sc->sc_c.sc_rh, SIOP_SFBR); 821 if (msgin == MSG_MESSAGE_REJECT) { 822 int msg, extmsg; 823 if (esiop_cmd->cmd_tables->msg_out[0] & 0x80) { 824 /* 825 * message was part of a identify + 826 * something else. Identify shouldn't 827 * have been rejected. 828 */ 829 msg = 830 esiop_cmd->cmd_tables->msg_out[1]; 831 extmsg = 832 esiop_cmd->cmd_tables->msg_out[3]; 833 } else { 834 msg = 835 esiop_cmd->cmd_tables->msg_out[0]; 836 extmsg = 837 esiop_cmd->cmd_tables->msg_out[2]; 838 } 839 if (msg == MSG_MESSAGE_REJECT) { 840 /* MSG_REJECT for a MSG_REJECT !*/ 841 if (xs) 842 scsipi_printaddr(xs->xs_periph); 843 else 844 printf("%s: ", 845 sc->sc_c.sc_dev.dv_xname); 846 printf("our reject message was " 847 "rejected\n"); 848 goto reset; 849 } 850 if (msg == MSG_EXTENDED && 851 extmsg == MSG_EXT_WDTR) { 852 /* WDTR rejected, initiate sync */ 853 if ((esiop_target->target_c.flags & 854 TARF_SYNC) == 0) { 855 esiop_target->target_c.status = 856 TARST_OK; 857 siop_update_xfer_mode(&sc->sc_c, 858 target); 859 /* no table to flush here */ 860 CALL_SCRIPT(Ent_msgin_ack); 861 return 1; 862 } 863 esiop_target->target_c.status = 864 TARST_SYNC_NEG; 865 siop_sdtr_msg(&esiop_cmd->cmd_c, 0, 866 sc->sc_c.st_minsync, 867 sc->sc_c.maxoff); 868 esiop_table_sync(esiop_cmd, 869 BUS_DMASYNC_PREREAD | 870 BUS_DMASYNC_PREWRITE); 871 CALL_SCRIPT(Ent_send_msgout); 872 return 1; 873 } else if (msg == MSG_EXTENDED && 874 extmsg == MSG_EXT_SDTR) { 875 /* sync rejected */ 876 esiop_target->target_c.offset = 0; 877 esiop_target->target_c.period = 0; 878 esiop_target->target_c.status = 879 TARST_OK; 880 siop_update_xfer_mode(&sc->sc_c, 881 target); 882 /* no table to flush here */ 883 CALL_SCRIPT(Ent_msgin_ack); 884 return 1; 885 } else if (msg == MSG_EXTENDED && 886 extmsg == MSG_EXT_PPR) { 887 /* PPR rejected */ 888 esiop_target->target_c.offset = 0; 889 esiop_target->target_c.period = 0; 890 esiop_target->target_c.status = 891 TARST_OK; 892 siop_update_xfer_mode(&sc->sc_c, 893 target); 894 /* no table to flush here */ 895 CALL_SCRIPT(Ent_msgin_ack); 896 return 1; 897 } else if (msg == MSG_SIMPLE_Q_TAG || 898 msg == MSG_HEAD_OF_Q_TAG || 899 msg == MSG_ORDERED_Q_TAG) { 900 if (esiop_handle_qtag_reject( 901 esiop_cmd) == -1) 902 goto reset; 903 CALL_SCRIPT(Ent_msgin_ack); 904 return 1; 905 } 906 if (xs) 907 scsipi_printaddr(xs->xs_periph); 908 else 909 printf("%s: ", 910 sc->sc_c.sc_dev.dv_xname); 911 if (msg == MSG_EXTENDED) { 912 printf("scsi message reject, extended " 913 "message sent was 0x%x\n", extmsg); 914 } else { 915 printf("scsi message reject, message " 916 "sent was 0x%x\n", msg); 917 } 918 /* no table to flush here */ 919 CALL_SCRIPT(Ent_msgin_ack); 920 return 1; 921 } 922 if (msgin == MSG_IGN_WIDE_RESIDUE) { 923 /* use the extmsgdata table to get the second byte */ 924 esiop_cmd->cmd_tables->t_extmsgdata.count = 925 htole32(1); 926 esiop_table_sync(esiop_cmd, 927 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 928 CALL_SCRIPT(Ent_get_extmsgdata); 929 return 1; 930 } 931 if (xs) 932 scsipi_printaddr(xs->xs_periph); 933 else 934 printf("%s: ", sc->sc_c.sc_dev.dv_xname); 935 printf("unhandled message 0x%x\n", msgin); 936 esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 937 esiop_cmd->cmd_tables->t_msgout.count= htole32(1); 938 esiop_table_sync(esiop_cmd, 939 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 940 CALL_SCRIPT(Ent_send_msgout); 941 return 1; 942 } 943 case A_int_extmsgin: 944 #ifdef SIOP_DEBUG_INTR 945 printf("extended message: msg 0x%x len %d\n", 946 esiop_cmd->cmd_tables->msg_in[2], 947 esiop_cmd->cmd_tables->msg_in[1]); 948 #endif 949 if (esiop_cmd->cmd_tables->msg_in[1] > 950 sizeof(esiop_cmd->cmd_tables->msg_in) - 2) 951 printf("%s: extended message too big (%d)\n", 952 sc->sc_c.sc_dev.dv_xname, 953 esiop_cmd->cmd_tables->msg_in[1]); 954 esiop_cmd->cmd_tables->t_extmsgdata.count = 955 htole32(esiop_cmd->cmd_tables->msg_in[1] - 1); 956 esiop_table_sync(esiop_cmd, 957 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 958 CALL_SCRIPT(Ent_get_extmsgdata); 959 return 1; 960 case A_int_extmsgdata: 961 #ifdef SIOP_DEBUG_INTR 962 { 963 int i; 964 printf("extended message: 0x%x, data:", 965 esiop_cmd->cmd_tables->msg_in[2]); 966 for (i = 3; i < 2 + esiop_cmd->cmd_tables->msg_in[1]; 967 i++) 968 printf(" 0x%x", 969 esiop_cmd->cmd_tables->msg_in[i]); 970 printf("\n"); 971 } 972 #endif 973 if (esiop_cmd->cmd_tables->msg_in[0] == 974 MSG_IGN_WIDE_RESIDUE) { 975 /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ 976 if (esiop_cmd->cmd_tables->msg_in[3] != 1) 977 printf("MSG_IGN_WIDE_RESIDUE: " 978 "bad len %d\n", 979 esiop_cmd->cmd_tables->msg_in[3]); 980 switch (siop_iwr(&esiop_cmd->cmd_c)) { 981 case SIOP_NEG_MSGOUT: 982 esiop_table_sync(esiop_cmd, 983 BUS_DMASYNC_PREREAD | 984 BUS_DMASYNC_PREWRITE); 985 CALL_SCRIPT(Ent_send_msgout); 986 return 1; 987 case SIOP_NEG_ACK: 988 CALL_SCRIPT(Ent_msgin_ack); 989 return 1; 990 default: 991 panic("invalid retval from " 992 "siop_iwr()"); 993 } 994 return 1; 995 } 996 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_PPR) { 997 switch (siop_ppr_neg(&esiop_cmd->cmd_c)) { 998 case SIOP_NEG_MSGOUT: 999 esiop_update_scntl3(sc, 1000 esiop_cmd->cmd_c.siop_target); 1001 esiop_table_sync(esiop_cmd, 1002 BUS_DMASYNC_PREREAD | 1003 BUS_DMASYNC_PREWRITE); 1004 CALL_SCRIPT(Ent_send_msgout); 1005 return 1; 1006 case SIOP_NEG_ACK: 1007 esiop_update_scntl3(sc, 1008 esiop_cmd->cmd_c.siop_target); 1009 CALL_SCRIPT(Ent_msgin_ack); 1010 return 1; 1011 default: 1012 panic("invalid retval from " 1013 "siop_wdtr_neg()"); 1014 } 1015 return 1; 1016 } 1017 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 1018 switch (siop_wdtr_neg(&esiop_cmd->cmd_c)) { 1019 case SIOP_NEG_MSGOUT: 1020 esiop_update_scntl3(sc, 1021 esiop_cmd->cmd_c.siop_target); 1022 esiop_table_sync(esiop_cmd, 1023 BUS_DMASYNC_PREREAD | 1024 BUS_DMASYNC_PREWRITE); 1025 CALL_SCRIPT(Ent_send_msgout); 1026 return 1; 1027 case SIOP_NEG_ACK: 1028 esiop_update_scntl3(sc, 1029 esiop_cmd->cmd_c.siop_target); 1030 CALL_SCRIPT(Ent_msgin_ack); 1031 return 1; 1032 default: 1033 panic("invalid retval from " 1034 "siop_wdtr_neg()"); 1035 } 1036 return 1; 1037 } 1038 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 1039 switch (siop_sdtr_neg(&esiop_cmd->cmd_c)) { 1040 case SIOP_NEG_MSGOUT: 1041 esiop_update_scntl3(sc, 1042 esiop_cmd->cmd_c.siop_target); 1043 esiop_table_sync(esiop_cmd, 1044 BUS_DMASYNC_PREREAD | 1045 BUS_DMASYNC_PREWRITE); 1046 CALL_SCRIPT(Ent_send_msgout); 1047 return 1; 1048 case SIOP_NEG_ACK: 1049 esiop_update_scntl3(sc, 1050 esiop_cmd->cmd_c.siop_target); 1051 CALL_SCRIPT(Ent_msgin_ack); 1052 return 1; 1053 default: 1054 panic("invalid retval from " 1055 "siop_wdtr_neg()"); 1056 } 1057 return 1; 1058 } 1059 /* send a message reject */ 1060 esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 1061 esiop_cmd->cmd_tables->t_msgout.count = htole32(1); 1062 esiop_table_sync(esiop_cmd, 1063 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1064 CALL_SCRIPT(Ent_send_msgout); 1065 return 1; 1066 case A_int_disc: 1067 INCSTAT(esiop_stat_intr_sdp); 1068 offset = bus_space_read_1(sc->sc_c.sc_rt, 1069 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 1070 #ifdef SIOP_DEBUG_DR 1071 printf("disconnect offset %d\n", offset); 1072 #endif 1073 siop_sdp(&esiop_cmd->cmd_c, offset); 1074 esiop_table_sync(esiop_cmd, 1075 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1076 CALL_SCRIPT(Ent_script_sched); 1077 return 1; 1078 case A_int_resfail: 1079 printf("reselect failed\n"); 1080 CALL_SCRIPT(Ent_script_sched); 1081 return 1; 1082 case A_int_done: 1083 if (xs == NULL) { 1084 printf("%s: done without command\n", 1085 sc->sc_c.sc_dev.dv_xname); 1086 CALL_SCRIPT(Ent_script_sched); 1087 return 1; 1088 } 1089 #ifdef SIOP_DEBUG_INTR 1090 printf("done, DSA=0x%lx target id 0x%x last msg " 1091 "in=0x%x status=0x%x\n", (u_long)esiop_cmd->cmd_c.dsa, 1092 le32toh(esiop_cmd->cmd_tables->id), 1093 esiop_cmd->cmd_tables->msg_in[0], 1094 le32toh(esiop_cmd->cmd_tables->status)); 1095 #endif 1096 INCSTAT(esiop_stat_intr_done); 1097 esiop_cmd->cmd_c.status = CMDST_DONE; 1098 goto end; 1099 default: 1100 printf("unknown irqcode %x\n", irqcode); 1101 if (xs) { 1102 xs->error = XS_SELTIMEOUT; 1103 goto end; 1104 } 1105 goto reset; 1106 } 1107 return 1; 1108 } 1109 /* We just should't get there */ 1110 panic("siop_intr: I shouldn't be there !"); 1111 1112 end: 1113 /* 1114 * restart the script now if command completed properly 1115 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 1116 * queue 1117 */ 1118 xs->status = le32toh(esiop_cmd->cmd_tables->status); 1119 #ifdef SIOP_DEBUG_INTR 1120 printf("esiop_intr end: status %d\n", xs->status); 1121 #endif 1122 if (tag >= 0) 1123 esiop_lun->tactive[tag] = NULL; 1124 else 1125 esiop_lun->active = NULL; 1126 offset = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1127 SIOP_SCRATCHA + 1); 1128 esiop_scsicmd_end(esiop_cmd, offset); 1129 if (freetarget && esiop_target->target_c.status == TARST_PROBING) 1130 esiop_del_dev(sc, target, lun); 1131 CALL_SCRIPT(Ent_script_sched); 1132 return 1; 1133 } 1134 1135 void 1136 esiop_scsicmd_end(esiop_cmd, offset) 1137 struct esiop_cmd *esiop_cmd; 1138 int offset; 1139 { 1140 struct scsipi_xfer *xs = esiop_cmd->cmd_c.xs; 1141 struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1142 1143 siop_update_resid(&esiop_cmd->cmd_c, offset); 1144 1145 switch(xs->status) { 1146 case SCSI_OK: 1147 xs->error = XS_NOERROR; 1148 break; 1149 case SCSI_BUSY: 1150 xs->error = XS_BUSY; 1151 break; 1152 case SCSI_CHECK: 1153 xs->error = XS_BUSY; 1154 /* remove commands in the queue and scheduler */ 1155 esiop_unqueue(sc, xs->xs_periph->periph_target, 1156 xs->xs_periph->periph_lun); 1157 break; 1158 case SCSI_QUEUE_FULL: 1159 INCSTAT(esiop_stat_intr_qfull); 1160 #ifdef SIOP_DEBUG 1161 printf("%s:%d:%d: queue full (tag %d)\n", 1162 sc->sc_c.sc_dev.dv_xname, 1163 xs->xs_periph->periph_target, 1164 xs->xs_periph->periph_lun, esiop_cmd->cmd_c.tag); 1165 #endif 1166 xs->error = XS_BUSY; 1167 break; 1168 case SCSI_SIOP_NOCHECK: 1169 /* 1170 * don't check status, xs->error is already valid 1171 */ 1172 break; 1173 case SCSI_SIOP_NOSTATUS: 1174 /* 1175 * the status byte was not updated, cmd was 1176 * aborted 1177 */ 1178 xs->error = XS_SELTIMEOUT; 1179 break; 1180 default: 1181 scsipi_printaddr(xs->xs_periph); 1182 printf("invalid status code %d\n", xs->status); 1183 xs->error = XS_DRIVER_STUFFUP; 1184 } 1185 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1186 bus_dmamap_sync(sc->sc_c.sc_dmat, 1187 esiop_cmd->cmd_c.dmamap_data, 0, 1188 esiop_cmd->cmd_c.dmamap_data->dm_mapsize, 1189 (xs->xs_control & XS_CTL_DATA_IN) ? 1190 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1191 bus_dmamap_unload(sc->sc_c.sc_dmat, 1192 esiop_cmd->cmd_c.dmamap_data); 1193 } 1194 bus_dmamap_unload(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd); 1195 callout_stop(&esiop_cmd->cmd_c.xs->xs_callout); 1196 esiop_cmd->cmd_c.status = CMDST_FREE; 1197 TAILQ_INSERT_TAIL(&sc->free_list, esiop_cmd, next); 1198 #if 0 1199 if (xs->resid != 0) 1200 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1201 #endif 1202 scsipi_done (xs); 1203 } 1204 1205 void 1206 esiop_checkdone(sc) 1207 struct esiop_softc *sc; 1208 { 1209 int target, lun, tag; 1210 struct esiop_target *esiop_target; 1211 struct esiop_lun *esiop_lun; 1212 struct esiop_cmd *esiop_cmd; 1213 u_int32_t slot; 1214 int needsync = 0; 1215 int status; 1216 u_int32_t sem; 1217 1218 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1219 sem = esiop_script_read(sc, sc->sc_semoffset); 1220 esiop_script_write(sc, sc->sc_semoffset, sem & ~A_sem_done); 1221 if ((sc->sc_flags & SCF_CHAN_NOSLOT) && (sem & A_sem_start)) { 1222 /* 1223 * at last one command have been started, 1224 * so we should have free slots now 1225 */ 1226 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1227 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1228 } 1229 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1230 1231 if ((sem & A_sem_done) == 0) { 1232 /* no pending done command */ 1233 return; 1234 } 1235 1236 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 1237 sc->sc_done_offset, A_ndone_slots * sizeof(u_int32_t), 1238 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1239 next: 1240 if (sc->sc_done_slot[sc->sc_currdoneslot] == 0) { 1241 if (needsync) 1242 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 1243 sc->sc_done_offset, 1244 A_ndone_slots * sizeof(u_int32_t), 1245 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1246 return; 1247 } 1248 1249 needsync = 1; 1250 1251 slot = htole32(sc->sc_done_slot[sc->sc_currdoneslot]); 1252 sc->sc_done_slot[sc->sc_currdoneslot] = 0; 1253 sc->sc_currdoneslot += 1; 1254 if (sc->sc_currdoneslot == A_ndone_slots) 1255 sc->sc_currdoneslot = 0; 1256 1257 target = (slot & A_f_c_target) ? (slot >> 8) & 0xff : -1; 1258 lun = (slot & A_f_c_lun) ? (slot >> 16) & 0xff : -1; 1259 tag = (slot & A_f_c_tag) ? (slot >> 24) & 0xff : -1; 1260 1261 esiop_target = (target >= 0) ? 1262 (struct esiop_target *)sc->sc_c.targets[target] : NULL; 1263 if (esiop_target == NULL) { 1264 printf("esiop_target (target %d) not valid\n", target); 1265 goto next; 1266 } 1267 esiop_lun = (lun >= 0) ? esiop_target->esiop_lun[lun] : NULL; 1268 if (esiop_lun == NULL) { 1269 printf("esiop_lun (target %d lun %d) not valid\n", 1270 target, lun); 1271 goto next; 1272 } 1273 esiop_cmd = (tag >= 0) ? esiop_lun->tactive[tag] : esiop_lun->active; 1274 if (esiop_cmd == NULL) { 1275 printf("esiop_cmd (target %d lun %d tag %d) not valid\n", 1276 target, lun, tag); 1277 goto next; 1278 } 1279 1280 esiop_table_sync(esiop_cmd, 1281 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1282 status = le32toh(esiop_cmd->cmd_tables->status); 1283 #ifdef DIAGNOSTIC 1284 if (status != SCSI_OK) { 1285 printf("command for T/L/Q %d/%d/%d status %d\n", 1286 target, lun, tag, status); 1287 goto next; 1288 } 1289 1290 #endif 1291 /* Ok, this command has been handled */ 1292 esiop_cmd->cmd_c.xs->status = status; 1293 if (tag >= 0) 1294 esiop_lun->tactive[tag] = NULL; 1295 else 1296 esiop_lun->active = NULL; 1297 /* scratcha was saved in tlq by script. fetch offset from it */ 1298 esiop_scsicmd_end(esiop_cmd, 1299 (le32toh(((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq) >> 8) 1300 & 0xff); 1301 goto next; 1302 } 1303 1304 void 1305 esiop_unqueue(sc, target, lun) 1306 struct esiop_softc *sc; 1307 int target; 1308 int lun; 1309 { 1310 int slot, tag; 1311 u_int32_t slotdsa; 1312 struct esiop_cmd *esiop_cmd; 1313 struct esiop_lun *esiop_lun = 1314 ((struct esiop_target *)sc->sc_c.targets[target])->esiop_lun[lun]; 1315 1316 /* first make sure to read valid data */ 1317 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1318 1319 for (tag = 0; tag < ESIOP_NTAG; tag++) { 1320 /* look for commands in the scheduler, not yet started */ 1321 if (esiop_lun->tactive[tag] == NULL) 1322 continue; 1323 esiop_cmd = esiop_lun->tactive[tag]; 1324 for (slot = 0; slot < A_ncmd_slots; slot++) { 1325 slotdsa = esiop_script_read(sc, 1326 sc->sc_shedoffset + slot * CMD_SLOTSIZE); 1327 /* if the slot has any flag, it won't match the DSA */ 1328 if (slotdsa == esiop_cmd->cmd_c.dsa) { /* found it */ 1329 /* Mark this slot as ignore */ 1330 esiop_script_write(sc, 1331 sc->sc_shedoffset + slot * CMD_SLOTSIZE, 1332 esiop_cmd->cmd_c.dsa | A_f_cmd_ignore); 1333 /* ask to requeue */ 1334 esiop_cmd->cmd_c.xs->error = XS_REQUEUE; 1335 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1336 esiop_lun->tactive[tag] = NULL; 1337 esiop_scsicmd_end(esiop_cmd, 0); 1338 break; 1339 } 1340 } 1341 } 1342 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1343 } 1344 1345 /* 1346 * handle a rejected queue tag message: the command will run untagged, 1347 * has to adjust the reselect script. 1348 */ 1349 1350 1351 int 1352 esiop_handle_qtag_reject(esiop_cmd) 1353 struct esiop_cmd *esiop_cmd; 1354 { 1355 struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1356 int target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; 1357 int lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; 1358 int tag = esiop_cmd->cmd_tables->msg_out[2]; 1359 struct esiop_target *esiop_target = 1360 (struct esiop_target*)sc->sc_c.targets[target]; 1361 struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; 1362 1363 #ifdef SIOP_DEBUG 1364 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1365 sc->sc_c.sc_dev.dv_xname, target, lun, tag, esiop_cmd->cmd_c.tag, 1366 esiop_cmd->cmd_c.status); 1367 #endif 1368 1369 if (esiop_lun->active != NULL) { 1370 printf("%s: untagged command already running for target %d " 1371 "lun %d (status %d)\n", sc->sc_c.sc_dev.dv_xname, 1372 target, lun, esiop_lun->active->cmd_c.status); 1373 return -1; 1374 } 1375 /* clear tag slot */ 1376 esiop_lun->tactive[tag] = NULL; 1377 /* add command to non-tagged slot */ 1378 esiop_lun->active = esiop_cmd; 1379 esiop_cmd->cmd_c.flags &= ~CMDFL_TAG; 1380 esiop_cmd->cmd_c.tag = -1; 1381 /* update DSA table */ 1382 esiop_script_write(sc, esiop_target->lun_table_offset + 1383 lun * 2 + A_target_luntbl / sizeof(u_int32_t), 1384 esiop_cmd->cmd_c.dsa); 1385 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1386 return 0; 1387 } 1388 1389 /* 1390 * handle a bus reset: reset chip, unqueue all active commands, free all 1391 * target struct and report lossage to upper layer. 1392 * As the upper layer may requeue immediatly we have to first store 1393 * all active commands in a temporary queue. 1394 */ 1395 void 1396 esiop_handle_reset(sc) 1397 struct esiop_softc *sc; 1398 { 1399 struct esiop_cmd *esiop_cmd; 1400 struct esiop_lun *esiop_lun; 1401 int target, lun, tag; 1402 /* 1403 * scsi bus reset. reset the chip and restart 1404 * the queue. Need to clean up all active commands 1405 */ 1406 printf("%s: scsi bus reset\n", sc->sc_c.sc_dev.dv_xname); 1407 /* stop, reset and restart the chip */ 1408 esiop_reset(sc); 1409 1410 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1411 /* chip has been reset, all slots are free now */ 1412 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1413 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1414 } 1415 /* 1416 * Process all commands: first commands completes, then commands 1417 * being executed 1418 */ 1419 esiop_checkdone(sc); 1420 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; 1421 target++) { 1422 struct esiop_target *esiop_target = 1423 (struct esiop_target *)sc->sc_c.targets[target]; 1424 if (esiop_target == NULL) 1425 continue; 1426 for (lun = 0; lun < 8; lun++) { 1427 esiop_lun = esiop_target->esiop_lun[lun]; 1428 if (esiop_lun == NULL) 1429 continue; 1430 for (tag = -1; tag < 1431 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1432 ESIOP_NTAG : 0); 1433 tag++) { 1434 if (tag >= 0) 1435 esiop_cmd = esiop_lun->tactive[tag]; 1436 else 1437 esiop_cmd = esiop_lun->active; 1438 if (esiop_cmd == NULL) 1439 continue; 1440 scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); 1441 printf("command with tag id %d reset\n", tag); 1442 esiop_cmd->cmd_c.xs->error = 1443 (esiop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1444 XS_TIMEOUT : XS_RESET; 1445 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1446 if (tag >= 0) 1447 esiop_lun->tactive[tag] = NULL; 1448 else 1449 esiop_lun->active = NULL; 1450 esiop_cmd->cmd_c.status = CMDST_DONE; 1451 esiop_scsicmd_end(esiop_cmd, 0); 1452 } 1453 } 1454 sc->sc_c.targets[target]->status = TARST_ASYNC; 1455 sc->sc_c.targets[target]->flags &= ~(TARF_ISWIDE | TARF_ISDT); 1456 sc->sc_c.targets[target]->period = 1457 sc->sc_c.targets[target]->offset = 0; 1458 siop_update_xfer_mode(&sc->sc_c, target); 1459 } 1460 1461 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1462 } 1463 1464 void 1465 esiop_scsipi_request(chan, req, arg) 1466 struct scsipi_channel *chan; 1467 scsipi_adapter_req_t req; 1468 void *arg; 1469 { 1470 struct scsipi_xfer *xs; 1471 struct scsipi_periph *periph; 1472 struct esiop_softc *sc = (void *)chan->chan_adapter->adapt_dev; 1473 struct esiop_cmd *esiop_cmd; 1474 struct esiop_target *esiop_target; 1475 int s, error, i; 1476 int target; 1477 int lun; 1478 1479 switch (req) { 1480 case ADAPTER_REQ_RUN_XFER: 1481 xs = arg; 1482 periph = xs->xs_periph; 1483 target = periph->periph_target; 1484 lun = periph->periph_lun; 1485 1486 s = splbio(); 1487 /* 1488 * first check if there are pending complete commands. 1489 * this can free us some resources (in the rings for example). 1490 * we have to lock it to avoid recursion. 1491 */ 1492 if ((sc->sc_flags & SCF_CHAN_ADAPTREQ) == 0) { 1493 sc->sc_flags |= SCF_CHAN_ADAPTREQ; 1494 esiop_checkdone(sc); 1495 sc->sc_flags &= ~SCF_CHAN_ADAPTREQ; 1496 } 1497 #ifdef SIOP_DEBUG_SCHED 1498 printf("starting cmd for %d:%d tag %d(%d)\n", target, lun, 1499 xs->xs_tag_type, xs->xs_tag_id); 1500 #endif 1501 esiop_cmd = TAILQ_FIRST(&sc->free_list); 1502 if (esiop_cmd == NULL) { 1503 xs->error = XS_RESOURCE_SHORTAGE; 1504 scsipi_done(xs); 1505 splx(s); 1506 return; 1507 } 1508 TAILQ_REMOVE(&sc->free_list, esiop_cmd, next); 1509 #ifdef DIAGNOSTIC 1510 if (esiop_cmd->cmd_c.status != CMDST_FREE) 1511 panic("siop_scsicmd: new cmd not free"); 1512 #endif 1513 esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; 1514 if (esiop_target == NULL) { 1515 #ifdef SIOP_DEBUG 1516 printf("%s: alloc siop_target for target %d\n", 1517 sc->sc_c.sc_dev.dv_xname, target); 1518 #endif 1519 sc->sc_c.targets[target] = 1520 malloc(sizeof(struct esiop_target), 1521 M_DEVBUF, M_NOWAIT | M_ZERO); 1522 if (sc->sc_c.targets[target] == NULL) { 1523 printf("%s: can't malloc memory for " 1524 "target %d\n", sc->sc_c.sc_dev.dv_xname, 1525 target); 1526 xs->error = XS_RESOURCE_SHORTAGE; 1527 scsipi_done(xs); 1528 splx(s); 1529 return; 1530 } 1531 esiop_target = 1532 (struct esiop_target*)sc->sc_c.targets[target]; 1533 esiop_target->target_c.status = TARST_PROBING; 1534 esiop_target->target_c.flags = 0; 1535 esiop_target->target_c.id = 1536 sc->sc_c.clock_div << 24; /* scntl3 */ 1537 esiop_target->target_c.id |= target << 16; /* id */ 1538 /* esiop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1539 1540 for (i=0; i < 8; i++) 1541 esiop_target->esiop_lun[i] = NULL; 1542 esiop_target_register(sc, target); 1543 } 1544 if (esiop_target->esiop_lun[lun] == NULL) { 1545 esiop_target->esiop_lun[lun] = 1546 malloc(sizeof(struct esiop_lun), M_DEVBUF, 1547 M_NOWAIT|M_ZERO); 1548 if (esiop_target->esiop_lun[lun] == NULL) { 1549 printf("%s: can't alloc esiop_lun for " 1550 "target %d lun %d\n", 1551 sc->sc_c.sc_dev.dv_xname, target, lun); 1552 xs->error = XS_RESOURCE_SHORTAGE; 1553 scsipi_done(xs); 1554 splx(s); 1555 return; 1556 } 1557 } 1558 esiop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1559 esiop_cmd->cmd_c.xs = xs; 1560 esiop_cmd->cmd_c.flags = 0; 1561 esiop_cmd->cmd_c.status = CMDST_READY; 1562 1563 /* load the DMA maps */ 1564 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1565 esiop_cmd->cmd_c.dmamap_cmd, 1566 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1567 if (error) { 1568 printf("%s: unable to load cmd DMA map: %d\n", 1569 sc->sc_c.sc_dev.dv_xname, error); 1570 xs->error = XS_DRIVER_STUFFUP; 1571 scsipi_done(xs); 1572 splx(s); 1573 return; 1574 } 1575 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1576 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1577 esiop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1578 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1579 ((xs->xs_control & XS_CTL_DATA_IN) ? 1580 BUS_DMA_READ : BUS_DMA_WRITE)); 1581 if (error) { 1582 printf("%s: unable to load cmd DMA map: %d", 1583 sc->sc_c.sc_dev.dv_xname, error); 1584 xs->error = XS_DRIVER_STUFFUP; 1585 scsipi_done(xs); 1586 bus_dmamap_unload(sc->sc_c.sc_dmat, 1587 esiop_cmd->cmd_c.dmamap_cmd); 1588 splx(s); 1589 return; 1590 } 1591 bus_dmamap_sync(sc->sc_c.sc_dmat, 1592 esiop_cmd->cmd_c.dmamap_data, 0, 1593 esiop_cmd->cmd_c.dmamap_data->dm_mapsize, 1594 (xs->xs_control & XS_CTL_DATA_IN) ? 1595 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1596 } 1597 bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd, 1598 0, esiop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1599 BUS_DMASYNC_PREWRITE); 1600 1601 if (xs->xs_tag_type) 1602 esiop_cmd->cmd_c.tag = xs->xs_tag_id; 1603 else 1604 esiop_cmd->cmd_c.tag = -1; 1605 siop_setuptables(&esiop_cmd->cmd_c); 1606 ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq = 1607 htole32(A_f_c_target | A_f_c_lun); 1608 ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= 1609 htole32((target << 8) | (lun << 16)); 1610 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1611 ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= 1612 htole32(A_f_c_tag); 1613 ((struct esiop_xfer *)esiop_cmd->cmd_tables)->tlq |= 1614 htole32(esiop_cmd->cmd_c.tag << 24); 1615 } 1616 1617 esiop_table_sync(esiop_cmd, 1618 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1619 esiop_start(sc, esiop_cmd); 1620 if (xs->xs_control & XS_CTL_POLL) { 1621 /* poll for command completion */ 1622 while ((xs->xs_status & XS_STS_DONE) == 0) { 1623 delay(1000); 1624 esiop_intr(sc); 1625 } 1626 } 1627 splx(s); 1628 return; 1629 1630 case ADAPTER_REQ_GROW_RESOURCES: 1631 #ifdef SIOP_DEBUG 1632 printf("%s grow resources (%d)\n", sc->sc_c.sc_dev.dv_xname, 1633 sc->sc_c.sc_adapt.adapt_openings); 1634 #endif 1635 esiop_morecbd(sc); 1636 return; 1637 1638 case ADAPTER_REQ_SET_XFER_MODE: 1639 { 1640 struct scsipi_xfer_mode *xm = arg; 1641 if (sc->sc_c.targets[xm->xm_target] == NULL) 1642 return; 1643 s = splbio(); 1644 if (xm->xm_mode & PERIPH_CAP_TQING) { 1645 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1646 /* allocate tag tables for this device */ 1647 for (lun = 0; 1648 lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1649 if (scsipi_lookup_periph(chan, 1650 xm->xm_target, lun) != NULL) 1651 esiop_add_dev(sc, xm->xm_target, lun); 1652 } 1653 } 1654 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1655 (sc->sc_c.features & SF_BUS_WIDE)) 1656 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1657 if (xm->xm_mode & PERIPH_CAP_SYNC) 1658 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1659 if ((xm->xm_mode & PERIPH_CAP_DT) && 1660 (sc->sc_c.features & SF_CHIP_DT)) 1661 sc->sc_c.targets[xm->xm_target]->flags |= TARF_DT; 1662 if ((xm->xm_mode & 1663 (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) || 1664 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1665 sc->sc_c.targets[xm->xm_target]->status = TARST_ASYNC; 1666 1667 splx(s); 1668 } 1669 } 1670 } 1671 1672 static void 1673 esiop_start(sc, esiop_cmd) 1674 struct esiop_softc *sc; 1675 struct esiop_cmd *esiop_cmd; 1676 { 1677 struct esiop_lun *esiop_lun; 1678 struct esiop_target *esiop_target; 1679 int timeout; 1680 int target, lun, slot; 1681 1682 /* 1683 * first make sure to read valid data 1684 */ 1685 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1686 1687 /* 1688 * We use a circular queue here. sc->sc_currschedslot points to a 1689 * free slot, unless we have filled the queue. Check this. 1690 */ 1691 slot = sc->sc_currschedslot; 1692 if ((esiop_script_read(sc, sc->sc_shedoffset + slot * CMD_SLOTSIZE) & 1693 A_f_cmd_free) == 0) { 1694 /* 1695 * no more free slot, no need to continue. freeze the queue 1696 * and requeue this command. 1697 */ 1698 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1699 sc->sc_flags |= SCF_CHAN_NOSLOT; 1700 esiop_script_write(sc, sc->sc_semoffset, 1701 esiop_script_read(sc, sc->sc_semoffset) & ~A_sem_start); 1702 esiop_script_sync(sc, 1703 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1704 esiop_cmd->cmd_c.xs->error = XS_REQUEUE; 1705 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1706 esiop_scsicmd_end(esiop_cmd, 0); 1707 return; 1708 } 1709 /* OK, we can use this slot */ 1710 1711 target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; 1712 lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; 1713 esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; 1714 esiop_lun = esiop_target->esiop_lun[lun]; 1715 /* if non-tagged command active, panic: this shouldn't happen */ 1716 if (esiop_lun->active != NULL) { 1717 panic("esiop_start: tagged cmd while untagged running"); 1718 } 1719 #ifdef DIAGNOSTIC 1720 /* sanity check the tag if needed */ 1721 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1722 if (esiop_lun->tactive[esiop_cmd->cmd_c.tag] != NULL) 1723 panic("esiop_start: tag not free"); 1724 if (esiop_cmd->cmd_c.tag >= ESIOP_NTAG || 1725 esiop_cmd->cmd_c.tag < 0) { 1726 scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); 1727 printf(": tag id %d\n", esiop_cmd->cmd_c.tag); 1728 panic("esiop_start: invalid tag id"); 1729 } 1730 } 1731 #endif 1732 #ifdef SIOP_DEBUG_SCHED 1733 printf("using slot %d for DSA 0x%lx\n", slot, 1734 (u_long)esiop_cmd->cmd_c.dsa); 1735 #endif 1736 /* mark command as active */ 1737 if (esiop_cmd->cmd_c.status == CMDST_READY) 1738 esiop_cmd->cmd_c.status = CMDST_ACTIVE; 1739 else 1740 panic("esiop_start: bad status"); 1741 /* DSA table for reselect */ 1742 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1743 esiop_lun->tactive[esiop_cmd->cmd_c.tag] = esiop_cmd; 1744 /* DSA table for reselect */ 1745 esiop_lun->lun_tagtbl->tbl[esiop_cmd->cmd_c.tag] = 1746 htole32(esiop_cmd->cmd_c.dsa); 1747 bus_dmamap_sync(sc->sc_c.sc_dmat, 1748 esiop_lun->lun_tagtbl->tblblk->blkmap, 1749 esiop_lun->lun_tagtbl->tbl_offset, 1750 sizeof(u_int32_t) * ESIOP_NTAG, BUS_DMASYNC_PREWRITE); 1751 } else { 1752 esiop_lun->active = esiop_cmd; 1753 esiop_script_write(sc, 1754 esiop_target->lun_table_offset + 1755 lun * 2 + A_target_luntbl / sizeof(u_int32_t), 1756 esiop_cmd->cmd_c.dsa); 1757 } 1758 /* scheduler slot: DSA */ 1759 esiop_script_write(sc, sc->sc_shedoffset + slot * CMD_SLOTSIZE, 1760 esiop_cmd->cmd_c.dsa); 1761 /* make sure SCRIPT processor will read valid data */ 1762 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1763 /* handle timeout */ 1764 if ((esiop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1765 /* start exire timer */ 1766 timeout = mstohz(esiop_cmd->cmd_c.xs->timeout); 1767 if (timeout == 0) 1768 timeout = 1; 1769 callout_reset( &esiop_cmd->cmd_c.xs->xs_callout, 1770 timeout, esiop_timeout, esiop_cmd); 1771 } 1772 /* Signal script it has some work to do */ 1773 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1774 SIOP_ISTAT, ISTAT_SIGP); 1775 /* update the current slot, and wait for IRQ */ 1776 sc->sc_currschedslot++; 1777 if (sc->sc_currschedslot >= A_ncmd_slots) 1778 sc->sc_currschedslot = 0; 1779 return; 1780 } 1781 1782 void 1783 esiop_timeout(v) 1784 void *v; 1785 { 1786 struct esiop_cmd *esiop_cmd = v; 1787 struct esiop_softc *sc = 1788 (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1789 int s; 1790 #ifdef SIOP_DEBUG 1791 int slot, slotdsa; 1792 #endif 1793 1794 s = splbio(); 1795 esiop_table_sync(esiop_cmd, 1796 BUS_DMASYNC_POSTREAD | 1797 BUS_DMASYNC_POSTWRITE); 1798 scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); 1799 #ifdef SIOP_DEBUG 1800 printf("command timeout (status %d)\n", le32toh(esiop_cmd->cmd_tables->status)); 1801 1802 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1803 for (slot = 0; slot < A_ncmd_slots; slot++) { 1804 slotdsa = esiop_script_read(sc, 1805 sc->sc_shedoffset + slot * CMD_SLOTSIZE); 1806 if ((slotdsa & 0x01) == 0) 1807 printf("slot %d not free (0x%x)\n", slot, slotdsa); 1808 } 1809 printf("istat 0x%x ", bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT)); 1810 printf("DSP 0x%lx DSA 0x%x\n", 1811 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) - sc->sc_c.sc_scriptaddr), 1812 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 1813 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_CTEST2); 1814 printf("istat 0x%x\n", bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT)); 1815 #else 1816 printf("command timeout, CDB: "); 1817 scsipi_print_cdb(esiop_cmd->cmd_c.xs->cmd); 1818 printf("\n"); 1819 #endif 1820 /* reset the scsi bus */ 1821 siop_resetbus(&sc->sc_c); 1822 1823 /* deactivate callout */ 1824 callout_stop(&esiop_cmd->cmd_c.xs->xs_callout); 1825 /* 1826 * mark command has being timed out and just return; 1827 * the bus reset will generate an interrupt, 1828 * it will be handled in siop_intr() 1829 */ 1830 esiop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1831 splx(s); 1832 return; 1833 1834 } 1835 1836 void 1837 esiop_dump_script(sc) 1838 struct esiop_softc *sc; 1839 { 1840 int i; 1841 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1842 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1843 le32toh(sc->sc_c.sc_script[i]), 1844 le32toh(sc->sc_c.sc_script[i+1])); 1845 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1846 0xc0000000) { 1847 i++; 1848 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i+1])); 1849 } 1850 printf("\n"); 1851 } 1852 } 1853 1854 void 1855 esiop_morecbd(sc) 1856 struct esiop_softc *sc; 1857 { 1858 int error, i, s; 1859 bus_dma_segment_t seg; 1860 int rseg; 1861 struct esiop_cbd *newcbd; 1862 struct esiop_xfer *xfer; 1863 bus_addr_t dsa; 1864 1865 /* allocate a new list head */ 1866 newcbd = malloc(sizeof(struct esiop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1867 if (newcbd == NULL) { 1868 printf("%s: can't allocate memory for command descriptors " 1869 "head\n", sc->sc_c.sc_dev.dv_xname); 1870 return; 1871 } 1872 1873 /* allocate cmd list */ 1874 newcbd->cmds = malloc(sizeof(struct esiop_cmd) * SIOP_NCMDPB, 1875 M_DEVBUF, M_NOWAIT|M_ZERO); 1876 if (newcbd->cmds == NULL) { 1877 printf("%s: can't allocate memory for command descriptors\n", 1878 sc->sc_c.sc_dev.dv_xname); 1879 goto bad3; 1880 } 1881 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 1882 &seg, 1, &rseg, BUS_DMA_NOWAIT); 1883 if (error) { 1884 printf("%s: unable to allocate cbd DMA memory, error = %d\n", 1885 sc->sc_c.sc_dev.dv_xname, error); 1886 goto bad2; 1887 } 1888 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1889 (caddr_t *)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1890 if (error) { 1891 printf("%s: unable to map cbd DMA memory, error = %d\n", 1892 sc->sc_c.sc_dev.dv_xname, error); 1893 goto bad2; 1894 } 1895 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1896 BUS_DMA_NOWAIT, &newcbd->xferdma); 1897 if (error) { 1898 printf("%s: unable to create cbd DMA map, error = %d\n", 1899 sc->sc_c.sc_dev.dv_xname, error); 1900 goto bad1; 1901 } 1902 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, 1903 newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1904 if (error) { 1905 printf("%s: unable to load cbd DMA map, error = %d\n", 1906 sc->sc_c.sc_dev.dv_xname, error); 1907 goto bad0; 1908 } 1909 #ifdef DEBUG 1910 printf("%s: alloc newcdb at PHY addr 0x%lx\n", sc->sc_c.sc_dev.dv_xname, 1911 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1912 #endif 1913 for (i = 0; i < SIOP_NCMDPB; i++) { 1914 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1915 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1916 &newcbd->cmds[i].cmd_c.dmamap_data); 1917 if (error) { 1918 printf("%s: unable to create data DMA map for cbd: " 1919 "error %d\n", 1920 sc->sc_c.sc_dev.dv_xname, error); 1921 goto bad0; 1922 } 1923 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1924 sizeof(struct scsipi_generic), 1, 1925 sizeof(struct scsipi_generic), 0, 1926 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1927 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1928 if (error) { 1929 printf("%s: unable to create cmd DMA map for cbd %d\n", 1930 sc->sc_c.sc_dev.dv_xname, error); 1931 goto bad0; 1932 } 1933 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1934 newcbd->cmds[i].esiop_cbdp = newcbd; 1935 xfer = &newcbd->xfers[i]; 1936 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1937 memset(newcbd->cmds[i].cmd_tables, 0, 1938 sizeof(struct esiop_xfer)); 1939 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1940 i * sizeof(struct esiop_xfer); 1941 newcbd->cmds[i].cmd_c.dsa = dsa; 1942 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1943 xfer->siop_tables.t_msgout.count= htole32(1); 1944 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1945 xfer->siop_tables.t_msgin.count= htole32(1); 1946 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1947 offsetof(struct siop_common_xfer, msg_in)); 1948 xfer->siop_tables.t_extmsgin.count= htole32(2); 1949 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1950 offsetof(struct siop_common_xfer, msg_in) + 1); 1951 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1952 offsetof(struct siop_common_xfer, msg_in) + 3); 1953 xfer->siop_tables.t_status.count= htole32(1); 1954 xfer->siop_tables.t_status.addr = htole32(dsa + 1955 offsetof(struct siop_common_xfer, status)); 1956 1957 s = splbio(); 1958 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1959 splx(s); 1960 #ifdef SIOP_DEBUG 1961 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1962 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1963 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1964 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1965 #endif 1966 } 1967 s = splbio(); 1968 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1969 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1970 splx(s); 1971 return; 1972 bad0: 1973 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1974 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1975 bad1: 1976 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1977 bad2: 1978 free(newcbd->cmds, M_DEVBUF); 1979 bad3: 1980 free(newcbd, M_DEVBUF); 1981 return; 1982 } 1983 1984 void 1985 esiop_moretagtbl(sc) 1986 struct esiop_softc *sc; 1987 { 1988 int error, i, j, s; 1989 bus_dma_segment_t seg; 1990 int rseg; 1991 struct esiop_dsatblblk *newtblblk; 1992 struct esiop_dsatbl *newtbls; 1993 u_int32_t *tbls; 1994 1995 /* allocate a new list head */ 1996 newtblblk = malloc(sizeof(struct esiop_dsatblblk), 1997 M_DEVBUF, M_NOWAIT|M_ZERO); 1998 if (newtblblk == NULL) { 1999 printf("%s: can't allocate memory for tag DSA table block\n", 2000 sc->sc_c.sc_dev.dv_xname); 2001 return; 2002 } 2003 2004 /* allocate tbl list */ 2005 newtbls = malloc(sizeof(struct esiop_dsatbl) * ESIOP_NTPB, 2006 M_DEVBUF, M_NOWAIT|M_ZERO); 2007 if (newtbls == NULL) { 2008 printf("%s: can't allocate memory for command descriptors\n", 2009 sc->sc_c.sc_dev.dv_xname); 2010 goto bad3; 2011 } 2012 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 2013 &seg, 1, &rseg, BUS_DMA_NOWAIT); 2014 if (error) { 2015 printf("%s: unable to allocate tbl DMA memory, error = %d\n", 2016 sc->sc_c.sc_dev.dv_xname, error); 2017 goto bad2; 2018 } 2019 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 2020 (void *)&tbls, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 2021 if (error) { 2022 printf("%s: unable to map tbls DMA memory, error = %d\n", 2023 sc->sc_c.sc_dev.dv_xname, error); 2024 goto bad2; 2025 } 2026 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 2027 BUS_DMA_NOWAIT, &newtblblk->blkmap); 2028 if (error) { 2029 printf("%s: unable to create tbl DMA map, error = %d\n", 2030 sc->sc_c.sc_dev.dv_xname, error); 2031 goto bad1; 2032 } 2033 error = bus_dmamap_load(sc->sc_c.sc_dmat, newtblblk->blkmap, 2034 tbls, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 2035 if (error) { 2036 printf("%s: unable to load tbl DMA map, error = %d\n", 2037 sc->sc_c.sc_dev.dv_xname, error); 2038 goto bad0; 2039 } 2040 #ifdef DEBUG 2041 printf("%s: alloc new tag DSA table at PHY addr 0x%lx\n", 2042 sc->sc_c.sc_dev.dv_xname, 2043 (unsigned long)newtblblk->blkmap->dm_segs[0].ds_addr); 2044 #endif 2045 for (i = 0; i < ESIOP_NTPB; i++) { 2046 newtbls[i].tblblk = newtblblk; 2047 newtbls[i].tbl = &tbls[i * ESIOP_NTAG]; 2048 newtbls[i].tbl_offset = i * ESIOP_NTAG * sizeof(u_int32_t); 2049 newtbls[i].tbl_dsa = newtblblk->blkmap->dm_segs[0].ds_addr + 2050 newtbls[i].tbl_offset; 2051 for (j = 0; j < ESIOP_NTAG; j++) 2052 newtbls[i].tbl[j] = j; 2053 s = splbio(); 2054 TAILQ_INSERT_TAIL(&sc->free_tagtbl, &newtbls[i], next); 2055 splx(s); 2056 } 2057 s = splbio(); 2058 TAILQ_INSERT_TAIL(&sc->tag_tblblk, newtblblk, next); 2059 splx(s); 2060 return; 2061 bad0: 2062 bus_dmamap_unload(sc->sc_c.sc_dmat, newtblblk->blkmap); 2063 bus_dmamap_destroy(sc->sc_c.sc_dmat, newtblblk->blkmap); 2064 bad1: 2065 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 2066 bad2: 2067 free(newtbls, M_DEVBUF); 2068 bad3: 2069 free(newtblblk, M_DEVBUF); 2070 return; 2071 } 2072 2073 void 2074 esiop_update_scntl3(sc, _siop_target) 2075 struct esiop_softc *sc; 2076 struct siop_common_target *_siop_target; 2077 { 2078 struct esiop_target *esiop_target = (struct esiop_target *)_siop_target; 2079 esiop_script_write(sc, esiop_target->lun_table_offset, 2080 esiop_target->target_c.id); 2081 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2082 } 2083 2084 void 2085 esiop_add_dev(sc, target, lun) 2086 struct esiop_softc *sc; 2087 int target; 2088 int lun; 2089 { 2090 struct esiop_target *esiop_target = 2091 (struct esiop_target *)sc->sc_c.targets[target]; 2092 struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; 2093 2094 if (esiop_lun->lun_tagtbl != NULL) 2095 return; /* already allocated */ 2096 2097 /* we need a tag DSA table */ 2098 esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); 2099 if (esiop_lun->lun_tagtbl == NULL) { 2100 esiop_moretagtbl(sc); 2101 esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); 2102 if (esiop_lun->lun_tagtbl == NULL) { 2103 /* no resources, run untagged */ 2104 esiop_target->target_c.flags &= ~TARF_TAG; 2105 return; 2106 } 2107 } 2108 TAILQ_REMOVE(&sc->free_tagtbl, esiop_lun->lun_tagtbl, next); 2109 /* Update LUN DSA table */ 2110 esiop_script_write(sc, esiop_target->lun_table_offset + 2111 lun * 2 + A_target_luntbl_tag / sizeof(u_int32_t), 2112 esiop_lun->lun_tagtbl->tbl_dsa); 2113 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2114 } 2115 2116 void 2117 esiop_del_dev(sc, target, lun) 2118 struct esiop_softc *sc; 2119 int target; 2120 int lun; 2121 { 2122 struct esiop_target *esiop_target; 2123 #ifdef SIOP_DEBUG 2124 printf("%s:%d:%d: free lun sw entry\n", 2125 sc->sc_c.sc_dev.dv_xname, target, lun); 2126 #endif 2127 if (sc->sc_c.targets[target] == NULL) 2128 return; 2129 esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; 2130 free(esiop_target->esiop_lun[lun], M_DEVBUF); 2131 esiop_target->esiop_lun[lun] = NULL; 2132 } 2133 2134 void 2135 esiop_target_register(sc, target) 2136 struct esiop_softc *sc; 2137 u_int32_t target; 2138 { 2139 struct esiop_target *esiop_target = 2140 (struct esiop_target *)sc->sc_c.targets[target]; 2141 struct esiop_lun *esiop_lun; 2142 int lun; 2143 2144 /* get a DSA table for this target */ 2145 esiop_target->lun_table_offset = sc->sc_free_offset; 2146 sc->sc_free_offset += sc->sc_c.sc_chan.chan_nluns * 2 + 2; 2147 #ifdef SIOP_DEBUG 2148 printf("%s: lun table for target %d offset %d free offset %d\n", 2149 sc->sc_c.sc_dev.dv_xname, target, esiop_target->lun_table_offset, 2150 sc->sc_free_offset); 2151 #endif 2152 /* first 32 bytes are ID (for select) */ 2153 esiop_script_write(sc, esiop_target->lun_table_offset, 2154 esiop_target->target_c.id); 2155 /* Record this table in the target DSA table */ 2156 esiop_script_write(sc, 2157 sc->sc_target_table_offset + target, 2158 (esiop_target->lun_table_offset * sizeof(u_int32_t)) + 2159 sc->sc_c.sc_scriptaddr); 2160 /* if we have a tag table, register it */ 2161 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 2162 esiop_lun = esiop_target->esiop_lun[lun]; 2163 if (esiop_lun == NULL) 2164 continue; 2165 if (esiop_lun->lun_tagtbl) 2166 esiop_script_write(sc, esiop_target->lun_table_offset + 2167 lun * 2 + A_target_luntbl_tag / sizeof(u_int32_t), 2168 esiop_lun->lun_tagtbl->tbl_dsa); 2169 } 2170 esiop_script_sync(sc, 2171 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2172 } 2173 2174 #ifdef SIOP_STATS 2175 void 2176 esiop_printstats() 2177 { 2178 printf("esiop_stat_intr %d\n", esiop_stat_intr); 2179 printf("esiop_stat_intr_shortxfer %d\n", esiop_stat_intr_shortxfer); 2180 printf("esiop_stat_intr_xferdisc %d\n", esiop_stat_intr_xferdisc); 2181 printf("esiop_stat_intr_sdp %d\n", esiop_stat_intr_sdp); 2182 printf("esiop_stat_intr_done %d\n", esiop_stat_intr_done); 2183 printf("esiop_stat_intr_lunresel %d\n", esiop_stat_intr_lunresel); 2184 printf("esiop_stat_intr_qfull %d\n", esiop_stat_intr_qfull); 2185 } 2186 #endif 2187
Indexes created Tue Sep 30 11:09:46 GMT 2025