esiop.c revision 1.50
1 /* $NetBSD: esiop.c,v 1.50 2010/02/12 06:40:52 dholland 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 /* SYM53c7/8xx PCI-SCSI I/O Processors driver */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: esiop.c,v 1.50 2010/02/12 06:40:52 dholland Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/malloc.h> 37 #include <sys/buf.h> 38 #include <sys/kernel.h> 39 40 #include <uvm/uvm_extern.h> 41 42 #include <machine/endian.h> 43 #include <sys/bus.h> 44 45 #include <dev/microcode/siop/esiop.out> 46 47 #include <dev/scsipi/scsi_all.h> 48 #include <dev/scsipi/scsi_message.h> 49 #include <dev/scsipi/scsipi_all.h> 50 51 #include <dev/scsipi/scsiconf.h> 52 53 #include <dev/ic/siopreg.h> 54 #include <dev/ic/siopvar_common.h> 55 #include <dev/ic/esiopvar.h> 56 57 #include "opt_siop.h" 58 59 #ifndef DEBUG 60 #undef DEBUG 61 #endif 62 /* 63 #define SIOP_DEBUG 64 #define SIOP_DEBUG_DR 65 #define SIOP_DEBUG_INTR 66 #define SIOP_DEBUG_SCHED 67 #define DUMP_SCRIPT 68 */ 69 70 #define SIOP_STATS 71 72 #ifndef SIOP_DEFAULT_TARGET 73 #define SIOP_DEFAULT_TARGET 7 74 #endif 75 76 /* number of cmd descriptors per block */ 77 #define SIOP_NCMDPB (PAGE_SIZE / sizeof(struct esiop_xfer)) 78 79 void esiop_reset(struct esiop_softc *); 80 void esiop_checkdone(struct esiop_softc *); 81 void esiop_handle_reset(struct esiop_softc *); 82 void esiop_scsicmd_end(struct esiop_cmd *, int); 83 void esiop_unqueue(struct esiop_softc *, int, int); 84 int esiop_handle_qtag_reject(struct esiop_cmd *); 85 static void esiop_start(struct esiop_softc *, struct esiop_cmd *); 86 void esiop_timeout(void *); 87 void esiop_scsipi_request(struct scsipi_channel *, 88 scsipi_adapter_req_t, void *); 89 void esiop_dump_script(struct esiop_softc *); 90 void esiop_morecbd(struct esiop_softc *); 91 void esiop_moretagtbl(struct esiop_softc *); 92 void siop_add_reselsw(struct esiop_softc *, int); 93 void esiop_target_register(struct esiop_softc *, uint32_t); 94 95 void esiop_update_scntl3(struct esiop_softc *, struct siop_common_target *); 96 97 #ifdef SIOP_STATS 98 static int esiop_stat_intr = 0; 99 static int esiop_stat_intr_shortxfer = 0; 100 static int esiop_stat_intr_sdp = 0; 101 static int esiop_stat_intr_done = 0; 102 static int esiop_stat_intr_xferdisc = 0; 103 static int esiop_stat_intr_lunresel = 0; 104 static int esiop_stat_intr_qfull = 0; 105 void esiop_printstats(void); 106 #define INCSTAT(x) x++ 107 #else 108 #define INCSTAT(x) 109 #endif 110 111 static inline void esiop_script_sync(struct esiop_softc *, int); 112 static inline void 113 esiop_script_sync(struct esiop_softc *sc, int ops) 114 { 115 116 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) 117 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 118 PAGE_SIZE, ops); 119 } 120 121 static inline uint32_t esiop_script_read(struct esiop_softc *, u_int); 122 static inline uint32_t 123 esiop_script_read(struct esiop_softc *sc, u_int offset) 124 { 125 126 if (sc->sc_c.features & SF_CHIP_RAM) { 127 return bus_space_read_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 128 offset * 4); 129 } else { 130 return le32toh(sc->sc_c.sc_script[offset]); 131 } 132 } 133 134 static inline void esiop_script_write(struct esiop_softc *, u_int, 135 uint32_t); 136 static inline void 137 esiop_script_write(struct esiop_softc *sc, u_int offset, uint32_t val) 138 { 139 140 if (sc->sc_c.features & SF_CHIP_RAM) { 141 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 142 offset * 4, val); 143 } else { 144 sc->sc_c.sc_script[offset] = htole32(val); 145 } 146 } 147 148 void 149 esiop_attach(struct esiop_softc *sc) 150 { 151 struct esiop_dsatbl *tagtbl_donering; 152 153 if (siop_common_attach(&sc->sc_c) != 0 ) 154 return; 155 156 TAILQ_INIT(&sc->free_list); 157 TAILQ_INIT(&sc->cmds); 158 TAILQ_INIT(&sc->free_tagtbl); 159 TAILQ_INIT(&sc->tag_tblblk); 160 sc->sc_currschedslot = 0; 161 #ifdef SIOP_DEBUG 162 aprint_debug_dev(sc->sc_c.sc_dev, 163 "script size = %d, PHY addr=0x%x, VIRT=%p\n", 164 (int)sizeof(esiop_script), 165 (uint32_t)sc->sc_c.sc_scriptaddr, sc->sc_c.sc_script); 166 #endif 167 168 sc->sc_c.sc_adapt.adapt_max_periph = ESIOP_NTAG; 169 sc->sc_c.sc_adapt.adapt_request = esiop_scsipi_request; 170 171 /* 172 * get space for the CMD done slot. For this we use a tag table entry. 173 * It's the same size and allows us to not waste 3/4 of a page 174 */ 175 #ifdef DIAGNOSTIC 176 if (ESIOP_NTAG != A_ndone_slots) { 177 aprint_error_dev(sc->sc_c.sc_dev, 178 "size of tag DSA table different from the done ring\n"); 179 return; 180 } 181 #endif 182 esiop_moretagtbl(sc); 183 tagtbl_donering = TAILQ_FIRST(&sc->free_tagtbl); 184 if (tagtbl_donering == NULL) { 185 aprint_error_dev(sc->sc_c.sc_dev, 186 "no memory for command done ring\n"); 187 return; 188 } 189 TAILQ_REMOVE(&sc->free_tagtbl, tagtbl_donering, next); 190 sc->sc_done_map = tagtbl_donering->tblblk->blkmap; 191 sc->sc_done_offset = tagtbl_donering->tbl_offset; 192 sc->sc_done_slot = &tagtbl_donering->tbl[0]; 193 194 /* Do a bus reset, so that devices fall back to narrow/async */ 195 siop_resetbus(&sc->sc_c); 196 /* 197 * siop_reset() will reset the chip, thus clearing pending interrupts 198 */ 199 esiop_reset(sc); 200 #ifdef DUMP_SCRIPT 201 esiop_dump_script(sc); 202 #endif 203 204 config_found(sc->sc_c.sc_dev, &sc->sc_c.sc_chan, scsiprint); 205 } 206 207 void 208 esiop_reset(struct esiop_softc *sc) 209 { 210 int i, j; 211 uint32_t addr; 212 uint32_t msgin_addr, sem_addr; 213 214 siop_common_reset(&sc->sc_c); 215 216 /* 217 * we copy the script at the beggining of RAM. Then there is 4 bytes 218 * for messages in, and 4 bytes for semaphore 219 */ 220 sc->sc_free_offset = __arraycount(esiop_script); 221 msgin_addr = 222 sc->sc_free_offset * sizeof(uint32_t) + sc->sc_c.sc_scriptaddr; 223 sc->sc_free_offset += 1; 224 sc->sc_semoffset = sc->sc_free_offset; 225 sem_addr = 226 sc->sc_semoffset * sizeof(uint32_t) + sc->sc_c.sc_scriptaddr; 227 sc->sc_free_offset += 1; 228 /* then we have the scheduler ring */ 229 sc->sc_shedoffset = sc->sc_free_offset; 230 sc->sc_free_offset += A_ncmd_slots * CMD_SLOTSIZE; 231 /* then the targets DSA table */ 232 sc->sc_target_table_offset = sc->sc_free_offset; 233 sc->sc_free_offset += sc->sc_c.sc_chan.chan_ntargets; 234 /* copy and patch the script */ 235 if (sc->sc_c.features & SF_CHIP_RAM) { 236 bus_space_write_region_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 0, 237 esiop_script, 238 __arraycount(esiop_script)); 239 for (j = 0; j < __arraycount(E_tlq_offset_Used); j++) { 240 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 241 E_tlq_offset_Used[j] * 4, 242 sizeof(struct siop_common_xfer)); 243 } 244 for (j = 0; j < __arraycount(E_saved_offset_offset_Used); j++) { 245 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 246 E_saved_offset_offset_Used[j] * 4, 247 sizeof(struct siop_common_xfer) + 4); 248 } 249 for (j = 0; j < __arraycount(E_abs_msgin2_Used); j++) { 250 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 251 E_abs_msgin2_Used[j] * 4, msgin_addr); 252 } 253 for (j = 0; j < __arraycount(E_abs_sem_Used); j++) { 254 bus_space_write_4(sc->sc_c.sc_ramt, sc->sc_c.sc_ramh, 255 E_abs_sem_Used[j] * 4, sem_addr); 256 } 257 258 if (sc->sc_c.features & SF_CHIP_LED0) { 259 bus_space_write_region_4(sc->sc_c.sc_ramt, 260 sc->sc_c.sc_ramh, 261 Ent_led_on1, esiop_led_on, 262 __arraycount(esiop_led_on)); 263 bus_space_write_region_4(sc->sc_c.sc_ramt, 264 sc->sc_c.sc_ramh, 265 Ent_led_on2, esiop_led_on, 266 __arraycount(esiop_led_on)); 267 bus_space_write_region_4(sc->sc_c.sc_ramt, 268 sc->sc_c.sc_ramh, 269 Ent_led_off, esiop_led_off, 270 __arraycount(esiop_led_off)); 271 } 272 } else { 273 for (j = 0; j < __arraycount(esiop_script); j++) { 274 sc->sc_c.sc_script[j] = htole32(esiop_script[j]); 275 } 276 for (j = 0; j < __arraycount(E_tlq_offset_Used); j++) { 277 sc->sc_c.sc_script[E_tlq_offset_Used[j]] = 278 htole32(sizeof(struct siop_common_xfer)); 279 } 280 for (j = 0; j < __arraycount(E_saved_offset_offset_Used); j++) { 281 sc->sc_c.sc_script[E_saved_offset_offset_Used[j]] = 282 htole32(sizeof(struct siop_common_xfer) + 4); 283 } 284 for (j = 0; j < __arraycount(E_abs_msgin2_Used); j++) { 285 sc->sc_c.sc_script[E_abs_msgin2_Used[j]] = 286 htole32(msgin_addr); 287 } 288 for (j = 0; j < __arraycount(E_abs_sem_Used); j++) { 289 sc->sc_c.sc_script[E_abs_sem_Used[j]] = 290 htole32(sem_addr); 291 } 292 293 if (sc->sc_c.features & SF_CHIP_LED0) { 294 for (j = 0; j < __arraycount(esiop_led_on); j++) 295 sc->sc_c.sc_script[ 296 Ent_led_on1 / sizeof(esiop_led_on[0]) + j 297 ] = htole32(esiop_led_on[j]); 298 for (j = 0; j < __arraycount(esiop_led_on); j++) 299 sc->sc_c.sc_script[ 300 Ent_led_on2 / sizeof(esiop_led_on[0]) + j 301 ] = htole32(esiop_led_on[j]); 302 for (j = 0; j < __arraycount(esiop_led_off); j++) 303 sc->sc_c.sc_script[ 304 Ent_led_off / sizeof(esiop_led_off[0]) + j 305 ] = htole32(esiop_led_off[j]); 306 } 307 } 308 /* get base of scheduler ring */ 309 addr = sc->sc_c.sc_scriptaddr + sc->sc_shedoffset * sizeof(uint32_t); 310 /* init scheduler */ 311 for (i = 0; i < A_ncmd_slots; i++) { 312 esiop_script_write(sc, 313 sc->sc_shedoffset + i * CMD_SLOTSIZE, A_f_cmd_free); 314 } 315 sc->sc_currschedslot = 0; 316 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); 317 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHD, addr); 318 /* 319 * 0x78000000 is a 'move data8 to reg'. data8 is the second 320 * octet, reg offset is the third. 321 */ 322 esiop_script_write(sc, Ent_cmdr0 / 4, 323 0x78640000 | ((addr & 0x000000ff) << 8)); 324 esiop_script_write(sc, Ent_cmdr1 / 4, 325 0x78650000 | ((addr & 0x0000ff00) )); 326 esiop_script_write(sc, Ent_cmdr2 / 4, 327 0x78660000 | ((addr & 0x00ff0000) >> 8)); 328 esiop_script_write(sc, Ent_cmdr3 / 4, 329 0x78670000 | ((addr & 0xff000000) >> 16)); 330 /* done ring */ 331 for (i = 0; i < A_ndone_slots; i++) 332 sc->sc_done_slot[i] = 0; 333 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 334 sc->sc_done_offset, A_ndone_slots * sizeof(uint32_t), 335 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 336 addr = sc->sc_done_map->dm_segs[0].ds_addr + sc->sc_done_offset; 337 sc->sc_currdoneslot = 0; 338 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHE + 2, 0); 339 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHF, addr); 340 esiop_script_write(sc, Ent_doner0 / 4, 341 0x786c0000 | ((addr & 0x000000ff) << 8)); 342 esiop_script_write(sc, Ent_doner1 / 4, 343 0x786d0000 | ((addr & 0x0000ff00) )); 344 esiop_script_write(sc, Ent_doner2 / 4, 345 0x786e0000 | ((addr & 0x00ff0000) >> 8)); 346 esiop_script_write(sc, Ent_doner3 / 4, 347 0x786f0000 | ((addr & 0xff000000) >> 16)); 348 349 /* set flags */ 350 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_SCRATCHC, 0); 351 /* write pointer of base of target DSA table */ 352 addr = (sc->sc_target_table_offset * sizeof(uint32_t)) + 353 sc->sc_c.sc_scriptaddr; 354 esiop_script_write(sc, (Ent_load_targtable / 4) + 0, 355 esiop_script_read(sc,(Ent_load_targtable / 4) + 0) | 356 ((addr & 0x000000ff) << 8)); 357 esiop_script_write(sc, (Ent_load_targtable / 4) + 2, 358 esiop_script_read(sc,(Ent_load_targtable / 4) + 2) | 359 ((addr & 0x0000ff00) )); 360 esiop_script_write(sc, (Ent_load_targtable / 4) + 4, 361 esiop_script_read(sc,(Ent_load_targtable / 4) + 4) | 362 ((addr & 0x00ff0000) >> 8)); 363 esiop_script_write(sc, (Ent_load_targtable / 4) + 6, 364 esiop_script_read(sc,(Ent_load_targtable / 4) + 6) | 365 ((addr & 0xff000000) >> 16)); 366 #ifdef SIOP_DEBUG 367 printf("%s: target table offset %d free offset %d\n", 368 device_xname(sc->sc_c.sc_dev), sc->sc_target_table_offset, 369 sc->sc_free_offset); 370 #endif 371 372 /* register existing targets */ 373 for (i = 0; i < sc->sc_c.sc_chan.chan_ntargets; i++) { 374 if (sc->sc_c.targets[i]) 375 esiop_target_register(sc, i); 376 } 377 /* start script */ 378 if ((sc->sc_c.features & SF_CHIP_RAM) == 0) { 379 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_c.sc_scriptdma, 0, 380 PAGE_SIZE, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 381 } 382 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP, 383 sc->sc_c.sc_scriptaddr + Ent_reselect); 384 } 385 386 #if 0 387 #define CALL_SCRIPT(ent) do { \ 388 printf ("start script DSA 0x%lx DSP 0x%lx\n", \ 389 esiop_cmd->cmd_c.dsa, \ 390 sc->sc_c.sc_scriptaddr + ent); \ 391 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ 392 SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 393 } while (/* CONSTCOND */0) 394 #else 395 #define CALL_SCRIPT(ent) do { \ 396 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, \ 397 SIOP_DSP, sc->sc_c.sc_scriptaddr + ent); \ 398 } while (/* CONSTCOND */0) 399 #endif 400 401 int 402 esiop_intr(void *v) 403 { 404 struct esiop_softc *sc = v; 405 struct esiop_target *esiop_target; 406 struct esiop_cmd *esiop_cmd; 407 struct esiop_lun *esiop_lun; 408 struct scsipi_xfer *xs; 409 int istat, sist, sstat1, dstat = 0; /* XXX: gcc */ 410 uint32_t irqcode; 411 int need_reset = 0; 412 int offset, target, lun, tag; 413 uint32_t tflags; 414 uint32_t addr; 415 int freetarget = 0; 416 int slot; 417 int retval = 0; 418 419 again: 420 istat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT); 421 if ((istat & (ISTAT_INTF | ISTAT_DIP | ISTAT_SIP)) == 0) { 422 return retval; 423 } 424 retval = 1; 425 INCSTAT(esiop_stat_intr); 426 esiop_checkdone(sc); 427 if (istat & ISTAT_INTF) { 428 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 429 SIOP_ISTAT, ISTAT_INTF); 430 goto again; 431 } 432 433 if ((istat &(ISTAT_DIP | ISTAT_SIP | ISTAT_ABRT)) == 434 (ISTAT_DIP | ISTAT_ABRT)) { 435 /* clear abort */ 436 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 437 SIOP_ISTAT, 0); 438 } 439 440 /* get CMD from T/L/Q */ 441 tflags = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 442 SIOP_SCRATCHC); 443 #ifdef SIOP_DEBUG_INTR 444 printf("interrupt, istat=0x%x tflags=0x%x " 445 "DSA=0x%x DSP=0x%lx\n", istat, tflags, 446 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 447 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 448 SIOP_DSP) - 449 sc->sc_c.sc_scriptaddr)); 450 #endif 451 target = (tflags & A_f_c_target) ? ((tflags >> 8) & 0xff) : -1; 452 if (target > sc->sc_c.sc_chan.chan_ntargets) target = -1; 453 lun = (tflags & A_f_c_lun) ? ((tflags >> 16) & 0xff) : -1; 454 if (lun > sc->sc_c.sc_chan.chan_nluns) lun = -1; 455 tag = (tflags & A_f_c_tag) ? ((tflags >> 24) & 0xff) : -1; 456 457 if (target >= 0 && lun >= 0) { 458 esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; 459 if (esiop_target == NULL) { 460 printf("esiop_target (target %d) not valid\n", target); 461 goto none; 462 } 463 esiop_lun = esiop_target->esiop_lun[lun]; 464 if (esiop_lun == NULL) { 465 printf("esiop_lun (target %d lun %d) not valid\n", 466 target, lun); 467 goto none; 468 } 469 esiop_cmd = 470 (tag >= 0) ? esiop_lun->tactive[tag] : esiop_lun->active; 471 if (esiop_cmd == NULL) { 472 printf("esiop_cmd (target %d lun %d tag %d)" 473 " not valid\n", 474 target, lun, tag); 475 goto none; 476 } 477 xs = esiop_cmd->cmd_c.xs; 478 #ifdef DIAGNOSTIC 479 if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { 480 printf("esiop_cmd (target %d lun %d) " 481 "not active (%d)\n", target, lun, 482 esiop_cmd->cmd_c.status); 483 goto none; 484 } 485 #endif 486 esiop_table_sync(esiop_cmd, 487 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 488 } else { 489 none: 490 xs = NULL; 491 esiop_target = NULL; 492 esiop_lun = NULL; 493 esiop_cmd = NULL; 494 } 495 if (istat & ISTAT_DIP) { 496 dstat = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 497 SIOP_DSTAT); 498 if (dstat & DSTAT_ABRT) { 499 /* was probably generated by a bus reset IOCTL */ 500 if ((dstat & DSTAT_DFE) == 0) 501 siop_clearfifo(&sc->sc_c); 502 goto reset; 503 } 504 if (dstat & DSTAT_SSI) { 505 printf("single step dsp 0x%08x dsa 0x08%x\n", 506 (int)(bus_space_read_4(sc->sc_c.sc_rt, 507 sc->sc_c.sc_rh, SIOP_DSP) - 508 sc->sc_c.sc_scriptaddr), 509 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 510 SIOP_DSA)); 511 if ((dstat & ~(DSTAT_DFE | DSTAT_SSI)) == 0 && 512 (istat & ISTAT_SIP) == 0) { 513 bus_space_write_1(sc->sc_c.sc_rt, 514 sc->sc_c.sc_rh, SIOP_DCNTL, 515 bus_space_read_1(sc->sc_c.sc_rt, 516 sc->sc_c.sc_rh, SIOP_DCNTL) | DCNTL_STD); 517 } 518 return 1; 519 } 520 521 if (dstat & ~(DSTAT_SIR | DSTAT_DFE | DSTAT_SSI)) { 522 printf("%s: DMA IRQ:", device_xname(sc->sc_c.sc_dev)); 523 if (dstat & DSTAT_IID) 524 printf(" Illegal instruction"); 525 if (dstat & DSTAT_BF) 526 printf(" bus fault"); 527 if (dstat & DSTAT_MDPE) 528 printf(" parity"); 529 if (dstat & DSTAT_DFE) 530 printf(" DMA fifo empty"); 531 else 532 siop_clearfifo(&sc->sc_c); 533 printf(", DSP=0x%x DSA=0x%x: ", 534 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 535 SIOP_DSP) - sc->sc_c.sc_scriptaddr), 536 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 537 if (esiop_cmd) 538 printf("T/L/Q=%d/%d/%d last msg_in=0x%x status=0x%x\n", 539 target, lun, tag, esiop_cmd->cmd_tables->msg_in[0], 540 le32toh(esiop_cmd->cmd_tables->status)); 541 else 542 printf(" current T/L/Q invalid\n"); 543 need_reset = 1; 544 } 545 } 546 if (istat & ISTAT_SIP) { 547 if (istat & ISTAT_DIP) 548 delay(10); 549 /* 550 * Can't read sist0 & sist1 independently, or we have to 551 * insert delay 552 */ 553 sist = bus_space_read_2(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 554 SIOP_SIST0); 555 sstat1 = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 556 SIOP_SSTAT1); 557 #ifdef SIOP_DEBUG_INTR 558 printf("scsi interrupt, sist=0x%x sstat1=0x%x " 559 "DSA=0x%x DSP=0x%lx\n", sist, sstat1, 560 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 561 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 562 SIOP_DSP) - 563 sc->sc_c.sc_scriptaddr)); 564 #endif 565 if (sist & SIST0_RST) { 566 esiop_handle_reset(sc); 567 /* no table to flush here */ 568 return 1; 569 } 570 if (sist & SIST0_SGE) { 571 if (esiop_cmd) 572 scsipi_printaddr(xs->xs_periph); 573 else 574 printf("%s:", device_xname(sc->sc_c.sc_dev)); 575 printf("scsi gross error\n"); 576 if (esiop_target) 577 esiop_target->target_c.flags &= ~TARF_DT; 578 #ifdef DEBUG 579 printf("DSA=0x%x DSP=0x%lx\n", 580 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 581 SIOP_DSA), 582 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, 583 sc->sc_c.sc_rh, SIOP_DSP) - 584 sc->sc_c.sc_scriptaddr)); 585 printf("SDID 0x%x SCNTL3 0x%x SXFER 0x%x SCNTL4 0x%x\n", 586 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 587 SIOP_SDID), 588 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 589 SIOP_SCNTL3), 590 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 591 SIOP_SXFER), 592 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 593 SIOP_SCNTL4)); 594 595 #endif 596 goto reset; 597 } 598 if ((sist & SIST0_MA) && need_reset == 0) { 599 if (esiop_cmd) { 600 int scratchc0; 601 dstat = bus_space_read_1(sc->sc_c.sc_rt, 602 sc->sc_c.sc_rh, SIOP_DSTAT); 603 /* 604 * first restore DSA, in case we were in a S/G 605 * operation. 606 */ 607 bus_space_write_4(sc->sc_c.sc_rt, 608 sc->sc_c.sc_rh, 609 SIOP_DSA, esiop_cmd->cmd_c.dsa); 610 scratchc0 = bus_space_read_1(sc->sc_c.sc_rt, 611 sc->sc_c.sc_rh, SIOP_SCRATCHC); 612 switch (sstat1 & SSTAT1_PHASE_MASK) { 613 case SSTAT1_PHASE_STATUS: 614 /* 615 * previous phase may be aborted for any reason 616 * ( for example, the target has less data to 617 * transfer than requested). Compute resid and 618 * just go to status, the command should 619 * terminate. 620 */ 621 INCSTAT(esiop_stat_intr_shortxfer); 622 if (scratchc0 & A_f_c_data) 623 siop_ma(&esiop_cmd->cmd_c); 624 else if ((dstat & DSTAT_DFE) == 0) 625 siop_clearfifo(&sc->sc_c); 626 CALL_SCRIPT(Ent_status); 627 return 1; 628 case SSTAT1_PHASE_MSGIN: 629 /* 630 * target may be ready to disconnect 631 * Compute resid which would be used later 632 * if a save data pointer is needed. 633 */ 634 INCSTAT(esiop_stat_intr_xferdisc); 635 if (scratchc0 & A_f_c_data) 636 siop_ma(&esiop_cmd->cmd_c); 637 else if ((dstat & DSTAT_DFE) == 0) 638 siop_clearfifo(&sc->sc_c); 639 bus_space_write_1(sc->sc_c.sc_rt, 640 sc->sc_c.sc_rh, SIOP_SCRATCHC, 641 scratchc0 & ~A_f_c_data); 642 CALL_SCRIPT(Ent_msgin); 643 return 1; 644 } 645 aprint_error_dev(sc->sc_c.sc_dev, 646 "unexpected phase mismatch %d\n", 647 sstat1 & SSTAT1_PHASE_MASK); 648 } else { 649 aprint_error_dev(sc->sc_c.sc_dev, 650 "phase mismatch without command\n"); 651 } 652 need_reset = 1; 653 } 654 if (sist & SIST0_PAR) { 655 /* parity error, reset */ 656 if (esiop_cmd) 657 scsipi_printaddr(xs->xs_periph); 658 else 659 printf("%s:", device_xname(sc->sc_c.sc_dev)); 660 printf("parity error\n"); 661 if (esiop_target) 662 esiop_target->target_c.flags &= ~TARF_DT; 663 goto reset; 664 } 665 if ((sist & (SIST1_STO << 8)) && need_reset == 0) { 666 /* 667 * selection time out, assume there's no device here 668 * We also have to update the ring pointer ourselve 669 */ 670 slot = bus_space_read_1(sc->sc_c.sc_rt, 671 sc->sc_c.sc_rh, SIOP_SCRATCHE); 672 esiop_script_sync(sc, 673 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 674 #ifdef SIOP_DEBUG_SCHED 675 printf("sel timeout target %d, slot %d\n", 676 target, slot); 677 #endif 678 /* 679 * mark this slot as free, and advance to next slot 680 */ 681 esiop_script_write(sc, 682 sc->sc_shedoffset + slot * CMD_SLOTSIZE, 683 A_f_cmd_free); 684 addr = bus_space_read_4(sc->sc_c.sc_rt, 685 sc->sc_c.sc_rh, SIOP_SCRATCHD); 686 if (slot < (A_ncmd_slots - 1)) { 687 bus_space_write_1(sc->sc_c.sc_rt, 688 sc->sc_c.sc_rh, SIOP_SCRATCHE, slot + 1); 689 addr = addr + sizeof(struct esiop_slot); 690 } else { 691 bus_space_write_1(sc->sc_c.sc_rt, 692 sc->sc_c.sc_rh, SIOP_SCRATCHE, 0); 693 addr = sc->sc_c.sc_scriptaddr + 694 sc->sc_shedoffset * sizeof(uint32_t); 695 } 696 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 697 SIOP_SCRATCHD, addr); 698 esiop_script_sync(sc, 699 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 700 if (esiop_cmd) { 701 esiop_cmd->cmd_c.status = CMDST_DONE; 702 xs->error = XS_SELTIMEOUT; 703 freetarget = 1; 704 goto end; 705 } else { 706 printf("%s: selection timeout without " 707 "command, target %d (sdid 0x%x), " 708 "slot %d\n", 709 device_xname(sc->sc_c.sc_dev), target, 710 bus_space_read_1(sc->sc_c.sc_rt, 711 sc->sc_c.sc_rh, SIOP_SDID), slot); 712 need_reset = 1; 713 } 714 } 715 if (sist & SIST0_UDC) { 716 /* 717 * unexpected disconnect. Usually the target signals 718 * a fatal condition this way. Attempt to get sense. 719 */ 720 if (esiop_cmd) { 721 esiop_cmd->cmd_tables->status = 722 htole32(SCSI_CHECK); 723 goto end; 724 } 725 aprint_error_dev(sc->sc_c.sc_dev, 726 "unexpected disconnect without command\n"); 727 goto reset; 728 } 729 if (sist & (SIST1_SBMC << 8)) { 730 /* SCSI bus mode change */ 731 if (siop_modechange(&sc->sc_c) == 0 || need_reset == 1) 732 goto reset; 733 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { 734 /* 735 * we have a script interrupt, it will 736 * restart the script. 737 */ 738 goto scintr; 739 } 740 /* 741 * else we have to restart it ourselve, at the 742 * interrupted instruction. 743 */ 744 bus_space_write_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 745 SIOP_DSP, 746 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 747 SIOP_DSP) - 8); 748 return 1; 749 } 750 /* Else it's an unhandled exception (for now). */ 751 aprint_error_dev(sc->sc_c.sc_dev, 752 "unhandled scsi interrupt, sist=0x%x sstat1=0x%x " 753 "DSA=0x%x DSP=0x%x\n", sist, 754 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 755 SIOP_SSTAT1), 756 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA), 757 (int)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 758 SIOP_DSP) - sc->sc_c.sc_scriptaddr)); 759 if (esiop_cmd) { 760 esiop_cmd->cmd_c.status = CMDST_DONE; 761 xs->error = XS_SELTIMEOUT; 762 goto end; 763 } 764 need_reset = 1; 765 } 766 if (need_reset) { 767 reset: 768 /* fatal error, reset the bus */ 769 siop_resetbus(&sc->sc_c); 770 /* no table to flush here */ 771 return 1; 772 } 773 774 scintr: 775 if ((istat & ISTAT_DIP) && (dstat & DSTAT_SIR)) { /* script interrupt */ 776 irqcode = bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 777 SIOP_DSPS); 778 #ifdef SIOP_DEBUG_INTR 779 printf("script interrupt 0x%x\n", irqcode); 780 #endif 781 /* 782 * no command, or an inactive command is only valid for a 783 * reselect interrupt 784 */ 785 if ((irqcode & 0x80) == 0) { 786 if (esiop_cmd == NULL) { 787 aprint_error_dev(sc->sc_c.sc_dev, 788 "script interrupt (0x%x) with invalid DSA !!!\n", 789 irqcode); 790 goto reset; 791 } 792 if (esiop_cmd->cmd_c.status != CMDST_ACTIVE) { 793 aprint_error_dev(sc->sc_c.sc_dev, 794 "command with invalid status " 795 "(IRQ code 0x%x current status %d) !\n", 796 irqcode, esiop_cmd->cmd_c.status); 797 xs = NULL; 798 } 799 } 800 switch(irqcode) { 801 case A_int_err: 802 printf("error, DSP=0x%x\n", 803 (int)(bus_space_read_4(sc->sc_c.sc_rt, 804 sc->sc_c.sc_rh, SIOP_DSP) - 805 sc->sc_c.sc_scriptaddr)); 806 if (xs) { 807 xs->error = XS_SELTIMEOUT; 808 goto end; 809 } else { 810 goto reset; 811 } 812 case A_int_msgin: 813 { 814 int msgin = bus_space_read_1(sc->sc_c.sc_rt, 815 sc->sc_c.sc_rh, SIOP_SFBR); 816 if (msgin == MSG_MESSAGE_REJECT) { 817 int msg, extmsg; 818 if (esiop_cmd->cmd_tables->msg_out[0] & 0x80) { 819 /* 820 * message was part of a identify + 821 * something else. Identify shouldn't 822 * have been rejected. 823 */ 824 msg = 825 esiop_cmd->cmd_tables->msg_out[1]; 826 extmsg = 827 esiop_cmd->cmd_tables->msg_out[3]; 828 } else { 829 msg = 830 esiop_cmd->cmd_tables->msg_out[0]; 831 extmsg = 832 esiop_cmd->cmd_tables->msg_out[2]; 833 } 834 if (msg == MSG_MESSAGE_REJECT) { 835 /* MSG_REJECT for a MSG_REJECT !*/ 836 if (xs) 837 scsipi_printaddr(xs->xs_periph); 838 else 839 printf("%s: ", device_xname( 840 sc->sc_c.sc_dev)); 841 printf("our reject message was " 842 "rejected\n"); 843 goto reset; 844 } 845 if (msg == MSG_EXTENDED && 846 extmsg == MSG_EXT_WDTR) { 847 /* WDTR rejected, initiate sync */ 848 if ((esiop_target->target_c.flags & 849 TARF_SYNC) == 0) { 850 esiop_target->target_c.status = 851 TARST_OK; 852 siop_update_xfer_mode(&sc->sc_c, 853 target); 854 /* no table to flush here */ 855 CALL_SCRIPT(Ent_msgin_ack); 856 return 1; 857 } 858 esiop_target->target_c.status = 859 TARST_SYNC_NEG; 860 siop_sdtr_msg(&esiop_cmd->cmd_c, 0, 861 sc->sc_c.st_minsync, 862 sc->sc_c.maxoff); 863 esiop_table_sync(esiop_cmd, 864 BUS_DMASYNC_PREREAD | 865 BUS_DMASYNC_PREWRITE); 866 CALL_SCRIPT(Ent_send_msgout); 867 return 1; 868 } else if (msg == MSG_EXTENDED && 869 extmsg == MSG_EXT_SDTR) { 870 /* sync rejected */ 871 esiop_target->target_c.offset = 0; 872 esiop_target->target_c.period = 0; 873 esiop_target->target_c.status = 874 TARST_OK; 875 siop_update_xfer_mode(&sc->sc_c, 876 target); 877 /* no table to flush here */ 878 CALL_SCRIPT(Ent_msgin_ack); 879 return 1; 880 } else if (msg == MSG_EXTENDED && 881 extmsg == MSG_EXT_PPR) { 882 /* PPR rejected */ 883 esiop_target->target_c.offset = 0; 884 esiop_target->target_c.period = 0; 885 esiop_target->target_c.status = 886 TARST_OK; 887 siop_update_xfer_mode(&sc->sc_c, 888 target); 889 /* no table to flush here */ 890 CALL_SCRIPT(Ent_msgin_ack); 891 return 1; 892 } else if (msg == MSG_SIMPLE_Q_TAG || 893 msg == MSG_HEAD_OF_Q_TAG || 894 msg == MSG_ORDERED_Q_TAG) { 895 if (esiop_handle_qtag_reject( 896 esiop_cmd) == -1) 897 goto reset; 898 CALL_SCRIPT(Ent_msgin_ack); 899 return 1; 900 } 901 if (xs) 902 scsipi_printaddr(xs->xs_periph); 903 else 904 printf("%s: ", 905 device_xname(sc->sc_c.sc_dev)); 906 if (msg == MSG_EXTENDED) { 907 printf("scsi message reject, extended " 908 "message sent was 0x%x\n", extmsg); 909 } else { 910 printf("scsi message reject, message " 911 "sent was 0x%x\n", msg); 912 } 913 /* no table to flush here */ 914 CALL_SCRIPT(Ent_msgin_ack); 915 return 1; 916 } 917 if (msgin == MSG_IGN_WIDE_RESIDUE) { 918 /* use the extmsgdata table to get the second byte */ 919 esiop_cmd->cmd_tables->t_extmsgdata.count = 920 htole32(1); 921 esiop_table_sync(esiop_cmd, 922 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 923 CALL_SCRIPT(Ent_get_extmsgdata); 924 return 1; 925 } 926 if (xs) 927 scsipi_printaddr(xs->xs_periph); 928 else 929 printf("%s: ", device_xname(sc->sc_c.sc_dev)); 930 printf("unhandled message 0x%x\n", msgin); 931 esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 932 esiop_cmd->cmd_tables->t_msgout.count= htole32(1); 933 esiop_table_sync(esiop_cmd, 934 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 935 CALL_SCRIPT(Ent_send_msgout); 936 return 1; 937 } 938 case A_int_extmsgin: 939 #ifdef SIOP_DEBUG_INTR 940 printf("extended message: msg 0x%x len %d\n", 941 esiop_cmd->cmd_tables->msg_in[2], 942 esiop_cmd->cmd_tables->msg_in[1]); 943 #endif 944 if (esiop_cmd->cmd_tables->msg_in[1] > 945 sizeof(esiop_cmd->cmd_tables->msg_in) - 2) 946 aprint_error_dev(sc->sc_c.sc_dev, 947 "extended message too big (%d)\n", 948 esiop_cmd->cmd_tables->msg_in[1]); 949 esiop_cmd->cmd_tables->t_extmsgdata.count = 950 htole32(esiop_cmd->cmd_tables->msg_in[1] - 1); 951 esiop_table_sync(esiop_cmd, 952 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 953 CALL_SCRIPT(Ent_get_extmsgdata); 954 return 1; 955 case A_int_extmsgdata: 956 #ifdef SIOP_DEBUG_INTR 957 { 958 int i; 959 printf("extended message: 0x%x, data:", 960 esiop_cmd->cmd_tables->msg_in[2]); 961 for (i = 3; i < 2 + esiop_cmd->cmd_tables->msg_in[1]; 962 i++) 963 printf(" 0x%x", 964 esiop_cmd->cmd_tables->msg_in[i]); 965 printf("\n"); 966 } 967 #endif 968 if (esiop_cmd->cmd_tables->msg_in[0] == 969 MSG_IGN_WIDE_RESIDUE) { 970 /* we got the second byte of MSG_IGN_WIDE_RESIDUE */ 971 if (esiop_cmd->cmd_tables->msg_in[3] != 1) 972 printf("MSG_IGN_WIDE_RESIDUE: " 973 "bad len %d\n", 974 esiop_cmd->cmd_tables->msg_in[3]); 975 switch (siop_iwr(&esiop_cmd->cmd_c)) { 976 case SIOP_NEG_MSGOUT: 977 esiop_table_sync(esiop_cmd, 978 BUS_DMASYNC_PREREAD | 979 BUS_DMASYNC_PREWRITE); 980 CALL_SCRIPT(Ent_send_msgout); 981 return 1; 982 case SIOP_NEG_ACK: 983 CALL_SCRIPT(Ent_msgin_ack); 984 return 1; 985 default: 986 panic("invalid retval from " 987 "siop_iwr()"); 988 } 989 return 1; 990 } 991 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_PPR) { 992 switch (siop_ppr_neg(&esiop_cmd->cmd_c)) { 993 case SIOP_NEG_MSGOUT: 994 esiop_update_scntl3(sc, 995 esiop_cmd->cmd_c.siop_target); 996 esiop_table_sync(esiop_cmd, 997 BUS_DMASYNC_PREREAD | 998 BUS_DMASYNC_PREWRITE); 999 CALL_SCRIPT(Ent_send_msgout); 1000 return 1; 1001 case SIOP_NEG_ACK: 1002 esiop_update_scntl3(sc, 1003 esiop_cmd->cmd_c.siop_target); 1004 CALL_SCRIPT(Ent_msgin_ack); 1005 return 1; 1006 default: 1007 panic("invalid retval from " 1008 "siop_wdtr_neg()"); 1009 } 1010 return 1; 1011 } 1012 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_WDTR) { 1013 switch (siop_wdtr_neg(&esiop_cmd->cmd_c)) { 1014 case SIOP_NEG_MSGOUT: 1015 esiop_update_scntl3(sc, 1016 esiop_cmd->cmd_c.siop_target); 1017 esiop_table_sync(esiop_cmd, 1018 BUS_DMASYNC_PREREAD | 1019 BUS_DMASYNC_PREWRITE); 1020 CALL_SCRIPT(Ent_send_msgout); 1021 return 1; 1022 case SIOP_NEG_ACK: 1023 esiop_update_scntl3(sc, 1024 esiop_cmd->cmd_c.siop_target); 1025 CALL_SCRIPT(Ent_msgin_ack); 1026 return 1; 1027 default: 1028 panic("invalid retval from " 1029 "siop_wdtr_neg()"); 1030 } 1031 return 1; 1032 } 1033 if (esiop_cmd->cmd_tables->msg_in[2] == MSG_EXT_SDTR) { 1034 switch (siop_sdtr_neg(&esiop_cmd->cmd_c)) { 1035 case SIOP_NEG_MSGOUT: 1036 esiop_update_scntl3(sc, 1037 esiop_cmd->cmd_c.siop_target); 1038 esiop_table_sync(esiop_cmd, 1039 BUS_DMASYNC_PREREAD | 1040 BUS_DMASYNC_PREWRITE); 1041 CALL_SCRIPT(Ent_send_msgout); 1042 return 1; 1043 case SIOP_NEG_ACK: 1044 esiop_update_scntl3(sc, 1045 esiop_cmd->cmd_c.siop_target); 1046 CALL_SCRIPT(Ent_msgin_ack); 1047 return 1; 1048 default: 1049 panic("invalid retval from " 1050 "siop_wdtr_neg()"); 1051 } 1052 return 1; 1053 } 1054 /* send a message reject */ 1055 esiop_cmd->cmd_tables->msg_out[0] = MSG_MESSAGE_REJECT; 1056 esiop_cmd->cmd_tables->t_msgout.count = htole32(1); 1057 esiop_table_sync(esiop_cmd, 1058 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1059 CALL_SCRIPT(Ent_send_msgout); 1060 return 1; 1061 case A_int_disc: 1062 INCSTAT(esiop_stat_intr_sdp); 1063 offset = bus_space_read_1(sc->sc_c.sc_rt, 1064 sc->sc_c.sc_rh, SIOP_SCRATCHA + 1); 1065 #ifdef SIOP_DEBUG_DR 1066 printf("disconnect offset %d\n", offset); 1067 #endif 1068 siop_sdp(&esiop_cmd->cmd_c, offset); 1069 /* we start again with no offset */ 1070 ESIOP_XFER(esiop_cmd, saved_offset) = 1071 htole32(SIOP_NOOFFSET); 1072 esiop_table_sync(esiop_cmd, 1073 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1074 CALL_SCRIPT(Ent_script_sched); 1075 return 1; 1076 case A_int_resfail: 1077 printf("reselect failed\n"); 1078 CALL_SCRIPT(Ent_script_sched); 1079 return 1; 1080 case A_int_done: 1081 if (xs == NULL) { 1082 printf("%s: done without command\n", 1083 device_xname(sc->sc_c.sc_dev)); 1084 CALL_SCRIPT(Ent_script_sched); 1085 return 1; 1086 } 1087 #ifdef SIOP_DEBUG_INTR 1088 printf("done, DSA=0x%lx target id 0x%x last msg " 1089 "in=0x%x status=0x%x\n", 1090 (u_long)esiop_cmd->cmd_c.dsa, 1091 le32toh(esiop_cmd->cmd_tables->id), 1092 esiop_cmd->cmd_tables->msg_in[0], 1093 le32toh(esiop_cmd->cmd_tables->status)); 1094 #endif 1095 INCSTAT(esiop_stat_intr_done); 1096 esiop_cmd->cmd_c.status = CMDST_DONE; 1097 goto end; 1098 default: 1099 printf("unknown irqcode %x\n", irqcode); 1100 if (xs) { 1101 xs->error = XS_SELTIMEOUT; 1102 goto end; 1103 } 1104 goto reset; 1105 } 1106 return 1; 1107 } 1108 /* We just should't get there */ 1109 panic("siop_intr: I shouldn't be there !"); 1110 1111 end: 1112 /* 1113 * restart the script now if command completed properly 1114 * Otherwise wait for siop_scsicmd_end(), we may need to cleanup the 1115 * queue 1116 */ 1117 xs->status = le32toh(esiop_cmd->cmd_tables->status); 1118 #ifdef SIOP_DEBUG_INTR 1119 printf("esiop_intr end: status %d\n", xs->status); 1120 #endif 1121 if (tag >= 0) 1122 esiop_lun->tactive[tag] = NULL; 1123 else 1124 esiop_lun->active = NULL; 1125 offset = bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1126 SIOP_SCRATCHA + 1); 1127 /* 1128 * if we got a disconnect between the last data phase 1129 * and the status phase, offset will be 0. In this 1130 * case, cmd_tables->saved_offset will have the proper value 1131 * if it got updated by the controller 1132 */ 1133 if (offset == 0 && 1134 ESIOP_XFER(esiop_cmd, saved_offset) != htole32(SIOP_NOOFFSET)) 1135 offset = 1136 (le32toh(ESIOP_XFER(esiop_cmd, saved_offset)) >> 8) & 0xff; 1137 1138 esiop_scsicmd_end(esiop_cmd, offset); 1139 if (freetarget && esiop_target->target_c.status == TARST_PROBING) 1140 esiop_del_dev(sc, target, lun); 1141 CALL_SCRIPT(Ent_script_sched); 1142 return 1; 1143 } 1144 1145 void 1146 esiop_scsicmd_end(struct esiop_cmd *esiop_cmd, int offset) 1147 { 1148 struct scsipi_xfer *xs = esiop_cmd->cmd_c.xs; 1149 struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1150 1151 siop_update_resid(&esiop_cmd->cmd_c, offset); 1152 1153 switch(xs->status) { 1154 case SCSI_OK: 1155 xs->error = XS_NOERROR; 1156 break; 1157 case SCSI_BUSY: 1158 xs->error = XS_BUSY; 1159 break; 1160 case SCSI_CHECK: 1161 xs->error = XS_BUSY; 1162 /* remove commands in the queue and scheduler */ 1163 esiop_unqueue(sc, xs->xs_periph->periph_target, 1164 xs->xs_periph->periph_lun); 1165 break; 1166 case SCSI_QUEUE_FULL: 1167 INCSTAT(esiop_stat_intr_qfull); 1168 #ifdef SIOP_DEBUG 1169 printf("%s:%d:%d: queue full (tag %d)\n", 1170 device_xname(sc->sc_c.sc_dev), 1171 xs->xs_periph->periph_target, 1172 xs->xs_periph->periph_lun, esiop_cmd->cmd_c.tag); 1173 #endif 1174 xs->error = XS_BUSY; 1175 break; 1176 case SCSI_SIOP_NOCHECK: 1177 /* 1178 * don't check status, xs->error is already valid 1179 */ 1180 break; 1181 case SCSI_SIOP_NOSTATUS: 1182 /* 1183 * the status byte was not updated, cmd was 1184 * aborted 1185 */ 1186 xs->error = XS_SELTIMEOUT; 1187 break; 1188 default: 1189 scsipi_printaddr(xs->xs_periph); 1190 printf("invalid status code %d\n", xs->status); 1191 xs->error = XS_DRIVER_STUFFUP; 1192 } 1193 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1194 bus_dmamap_sync(sc->sc_c.sc_dmat, 1195 esiop_cmd->cmd_c.dmamap_data, 0, 1196 esiop_cmd->cmd_c.dmamap_data->dm_mapsize, 1197 (xs->xs_control & XS_CTL_DATA_IN) ? 1198 BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE); 1199 bus_dmamap_unload(sc->sc_c.sc_dmat, 1200 esiop_cmd->cmd_c.dmamap_data); 1201 } 1202 bus_dmamap_unload(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd); 1203 if ((xs->xs_control & XS_CTL_POLL) == 0) 1204 callout_stop(&xs->xs_callout); 1205 esiop_cmd->cmd_c.status = CMDST_FREE; 1206 TAILQ_INSERT_TAIL(&sc->free_list, esiop_cmd, next); 1207 #if 0 1208 if (xs->resid != 0) 1209 printf("resid %d datalen %d\n", xs->resid, xs->datalen); 1210 #endif 1211 scsipi_done (xs); 1212 } 1213 1214 void 1215 esiop_checkdone(struct esiop_softc *sc) 1216 { 1217 int target, lun, tag; 1218 struct esiop_target *esiop_target; 1219 struct esiop_lun *esiop_lun; 1220 struct esiop_cmd *esiop_cmd; 1221 uint32_t slot; 1222 int needsync = 0; 1223 int status; 1224 uint32_t sem, offset; 1225 1226 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1227 sem = esiop_script_read(sc, sc->sc_semoffset); 1228 esiop_script_write(sc, sc->sc_semoffset, sem & ~A_sem_done); 1229 if ((sc->sc_flags & SCF_CHAN_NOSLOT) && (sem & A_sem_start)) { 1230 /* 1231 * at last one command have been started, 1232 * so we should have free slots now 1233 */ 1234 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1235 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1236 } 1237 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1238 1239 if ((sem & A_sem_done) == 0) { 1240 /* no pending done command */ 1241 return; 1242 } 1243 1244 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 1245 sc->sc_done_offset, A_ndone_slots * sizeof(uint32_t), 1246 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1247 next: 1248 if (sc->sc_done_slot[sc->sc_currdoneslot] == 0) { 1249 if (needsync) 1250 bus_dmamap_sync(sc->sc_c.sc_dmat, sc->sc_done_map, 1251 sc->sc_done_offset, 1252 A_ndone_slots * sizeof(uint32_t), 1253 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1254 return; 1255 } 1256 1257 needsync = 1; 1258 1259 slot = htole32(sc->sc_done_slot[sc->sc_currdoneslot]); 1260 sc->sc_done_slot[sc->sc_currdoneslot] = 0; 1261 sc->sc_currdoneslot += 1; 1262 if (sc->sc_currdoneslot == A_ndone_slots) 1263 sc->sc_currdoneslot = 0; 1264 1265 target = (slot & A_f_c_target) ? (slot >> 8) & 0xff : -1; 1266 lun = (slot & A_f_c_lun) ? (slot >> 16) & 0xff : -1; 1267 tag = (slot & A_f_c_tag) ? (slot >> 24) & 0xff : -1; 1268 1269 esiop_target = (target >= 0) ? 1270 (struct esiop_target *)sc->sc_c.targets[target] : NULL; 1271 if (esiop_target == NULL) { 1272 printf("esiop_target (target %d) not valid\n", target); 1273 goto next; 1274 } 1275 esiop_lun = (lun >= 0) ? esiop_target->esiop_lun[lun] : NULL; 1276 if (esiop_lun == NULL) { 1277 printf("esiop_lun (target %d lun %d) not valid\n", 1278 target, lun); 1279 goto next; 1280 } 1281 esiop_cmd = (tag >= 0) ? esiop_lun->tactive[tag] : esiop_lun->active; 1282 if (esiop_cmd == NULL) { 1283 printf("esiop_cmd (target %d lun %d tag %d) not valid\n", 1284 target, lun, tag); 1285 goto next; 1286 } 1287 1288 esiop_table_sync(esiop_cmd, 1289 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1290 status = le32toh(esiop_cmd->cmd_tables->status); 1291 #ifdef DIAGNOSTIC 1292 if (status != SCSI_OK) { 1293 printf("command for T/L/Q %d/%d/%d status %d\n", 1294 target, lun, tag, status); 1295 goto next; 1296 } 1297 1298 #endif 1299 /* Ok, this command has been handled */ 1300 esiop_cmd->cmd_c.xs->status = status; 1301 if (tag >= 0) 1302 esiop_lun->tactive[tag] = NULL; 1303 else 1304 esiop_lun->active = NULL; 1305 /* 1306 * scratcha was eventually saved in saved_offset by script. 1307 * fetch offset from it 1308 */ 1309 offset = 0; 1310 if (ESIOP_XFER(esiop_cmd, saved_offset) != htole32(SIOP_NOOFFSET)) 1311 offset = 1312 (le32toh(ESIOP_XFER(esiop_cmd, saved_offset)) >> 8) & 0xff; 1313 esiop_scsicmd_end(esiop_cmd, offset); 1314 goto next; 1315 } 1316 1317 void 1318 esiop_unqueue(struct esiop_softc *sc, int target, int lun) 1319 { 1320 int slot, tag; 1321 uint32_t slotdsa; 1322 struct esiop_cmd *esiop_cmd; 1323 struct esiop_lun *esiop_lun = 1324 ((struct esiop_target *)sc->sc_c.targets[target])->esiop_lun[lun]; 1325 1326 /* first make sure to read valid data */ 1327 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1328 1329 for (tag = 0; tag < ESIOP_NTAG; tag++) { 1330 /* look for commands in the scheduler, not yet started */ 1331 if (esiop_lun->tactive[tag] == NULL) 1332 continue; 1333 esiop_cmd = esiop_lun->tactive[tag]; 1334 for (slot = 0; slot < A_ncmd_slots; slot++) { 1335 slotdsa = esiop_script_read(sc, 1336 sc->sc_shedoffset + slot * CMD_SLOTSIZE); 1337 /* if the slot has any flag, it won't match the DSA */ 1338 if (slotdsa == esiop_cmd->cmd_c.dsa) { /* found it */ 1339 /* Mark this slot as ignore */ 1340 esiop_script_write(sc, 1341 sc->sc_shedoffset + slot * CMD_SLOTSIZE, 1342 esiop_cmd->cmd_c.dsa | A_f_cmd_ignore); 1343 /* ask to requeue */ 1344 esiop_cmd->cmd_c.xs->error = XS_REQUEUE; 1345 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1346 esiop_lun->tactive[tag] = NULL; 1347 esiop_scsicmd_end(esiop_cmd, 0); 1348 break; 1349 } 1350 } 1351 } 1352 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1353 } 1354 1355 /* 1356 * handle a rejected queue tag message: the command will run untagged, 1357 * has to adjust the reselect script. 1358 */ 1359 1360 1361 int 1362 esiop_handle_qtag_reject(struct esiop_cmd *esiop_cmd) 1363 { 1364 struct esiop_softc *sc = (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1365 int target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; 1366 int lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; 1367 int tag = esiop_cmd->cmd_tables->msg_out[2]; 1368 struct esiop_target *esiop_target = 1369 (struct esiop_target*)sc->sc_c.targets[target]; 1370 struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; 1371 1372 #ifdef SIOP_DEBUG 1373 printf("%s:%d:%d: tag message %d (%d) rejected (status %d)\n", 1374 device_xname(sc->sc_c.sc_dev), target, lun, tag, 1375 esiop_cmd->cmd_c.tag, esiop_cmd->cmd_c.status); 1376 #endif 1377 1378 if (esiop_lun->active != NULL) { 1379 aprint_error_dev(sc->sc_c.sc_dev, 1380 "untagged command already running for target %d " 1381 "lun %d (status %d)\n", 1382 target, lun, esiop_lun->active->cmd_c.status); 1383 return -1; 1384 } 1385 /* clear tag slot */ 1386 esiop_lun->tactive[tag] = NULL; 1387 /* add command to non-tagged slot */ 1388 esiop_lun->active = esiop_cmd; 1389 esiop_cmd->cmd_c.flags &= ~CMDFL_TAG; 1390 esiop_cmd->cmd_c.tag = -1; 1391 /* update DSA table */ 1392 esiop_script_write(sc, esiop_target->lun_table_offset + 1393 lun * 2 + A_target_luntbl / sizeof(uint32_t), 1394 esiop_cmd->cmd_c.dsa); 1395 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1396 return 0; 1397 } 1398 1399 /* 1400 * handle a bus reset: reset chip, unqueue all active commands, free all 1401 * target struct and report lossage to upper layer. 1402 * As the upper layer may requeue immediatly we have to first store 1403 * all active commands in a temporary queue. 1404 */ 1405 void 1406 esiop_handle_reset(struct esiop_softc *sc) 1407 { 1408 struct esiop_cmd *esiop_cmd; 1409 struct esiop_lun *esiop_lun; 1410 int target, lun, tag; 1411 /* 1412 * scsi bus reset. reset the chip and restart 1413 * the queue. Need to clean up all active commands 1414 */ 1415 printf("%s: scsi bus reset\n", device_xname(sc->sc_c.sc_dev)); 1416 /* stop, reset and restart the chip */ 1417 esiop_reset(sc); 1418 1419 if (sc->sc_flags & SCF_CHAN_NOSLOT) { 1420 /* chip has been reset, all slots are free now */ 1421 sc->sc_flags &= ~SCF_CHAN_NOSLOT; 1422 scsipi_channel_thaw(&sc->sc_c.sc_chan, 1); 1423 } 1424 /* 1425 * Process all commands: first commands completes, then commands 1426 * being executed 1427 */ 1428 esiop_checkdone(sc); 1429 for (target = 0; target < sc->sc_c.sc_chan.chan_ntargets; target++) { 1430 struct esiop_target *esiop_target = 1431 (struct esiop_target *)sc->sc_c.targets[target]; 1432 if (esiop_target == NULL) 1433 continue; 1434 for (lun = 0; lun < 8; lun++) { 1435 esiop_lun = esiop_target->esiop_lun[lun]; 1436 if (esiop_lun == NULL) 1437 continue; 1438 for (tag = -1; tag < 1439 ((sc->sc_c.targets[target]->flags & TARF_TAG) ? 1440 ESIOP_NTAG : 0); 1441 tag++) { 1442 if (tag >= 0) 1443 esiop_cmd = esiop_lun->tactive[tag]; 1444 else 1445 esiop_cmd = esiop_lun->active; 1446 if (esiop_cmd == NULL) 1447 continue; 1448 scsipi_printaddr( 1449 esiop_cmd->cmd_c.xs->xs_periph); 1450 printf("command with tag id %d reset\n", tag); 1451 esiop_cmd->cmd_c.xs->error = 1452 (esiop_cmd->cmd_c.flags & CMDFL_TIMEOUT) ? 1453 XS_TIMEOUT : XS_RESET; 1454 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1455 if (tag >= 0) 1456 esiop_lun->tactive[tag] = NULL; 1457 else 1458 esiop_lun->active = NULL; 1459 esiop_cmd->cmd_c.status = CMDST_DONE; 1460 esiop_scsicmd_end(esiop_cmd, 0); 1461 } 1462 } 1463 sc->sc_c.targets[target]->status = TARST_ASYNC; 1464 sc->sc_c.targets[target]->flags &= ~(TARF_ISWIDE | TARF_ISDT); 1465 sc->sc_c.targets[target]->period = 1466 sc->sc_c.targets[target]->offset = 0; 1467 siop_update_xfer_mode(&sc->sc_c, target); 1468 } 1469 1470 scsipi_async_event(&sc->sc_c.sc_chan, ASYNC_EVENT_RESET, NULL); 1471 } 1472 1473 void 1474 esiop_scsipi_request(struct scsipi_channel *chan, scsipi_adapter_req_t req, 1475 void *arg) 1476 { 1477 struct scsipi_xfer *xs; 1478 struct scsipi_periph *periph; 1479 struct esiop_softc *sc = device_private(chan->chan_adapter->adapt_dev); 1480 struct esiop_cmd *esiop_cmd; 1481 struct esiop_target *esiop_target; 1482 int s, error, i; 1483 int target; 1484 int lun; 1485 1486 switch (req) { 1487 case ADAPTER_REQ_RUN_XFER: 1488 xs = arg; 1489 periph = xs->xs_periph; 1490 target = periph->periph_target; 1491 lun = periph->periph_lun; 1492 1493 s = splbio(); 1494 /* 1495 * first check if there are pending complete commands. 1496 * this can free us some resources (in the rings for example). 1497 * we have to lock it to avoid recursion. 1498 */ 1499 if ((sc->sc_flags & SCF_CHAN_ADAPTREQ) == 0) { 1500 sc->sc_flags |= SCF_CHAN_ADAPTREQ; 1501 esiop_checkdone(sc); 1502 sc->sc_flags &= ~SCF_CHAN_ADAPTREQ; 1503 } 1504 #ifdef SIOP_DEBUG_SCHED 1505 printf("starting cmd for %d:%d tag %d(%d)\n", target, lun, 1506 xs->xs_tag_type, xs->xs_tag_id); 1507 #endif 1508 esiop_cmd = TAILQ_FIRST(&sc->free_list); 1509 if (esiop_cmd == NULL) { 1510 xs->error = XS_RESOURCE_SHORTAGE; 1511 scsipi_done(xs); 1512 splx(s); 1513 return; 1514 } 1515 TAILQ_REMOVE(&sc->free_list, esiop_cmd, next); 1516 #ifdef DIAGNOSTIC 1517 if (esiop_cmd->cmd_c.status != CMDST_FREE) 1518 panic("siop_scsicmd: new cmd not free"); 1519 #endif 1520 esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; 1521 if (esiop_target == NULL) { 1522 #ifdef SIOP_DEBUG 1523 printf("%s: alloc siop_target for target %d\n", 1524 device_xname(sc->sc_c.sc_dev), target); 1525 #endif 1526 sc->sc_c.targets[target] = 1527 malloc(sizeof(struct esiop_target), 1528 M_DEVBUF, M_NOWAIT | M_ZERO); 1529 if (sc->sc_c.targets[target] == NULL) { 1530 aprint_error_dev(sc->sc_c.sc_dev, 1531 "can't malloc memory for " 1532 "target %d\n", 1533 target); 1534 xs->error = XS_RESOURCE_SHORTAGE; 1535 scsipi_done(xs); 1536 splx(s); 1537 return; 1538 } 1539 esiop_target = 1540 (struct esiop_target*)sc->sc_c.targets[target]; 1541 esiop_target->target_c.status = TARST_PROBING; 1542 esiop_target->target_c.flags = 0; 1543 esiop_target->target_c.id = 1544 sc->sc_c.clock_div << 24; /* scntl3 */ 1545 esiop_target->target_c.id |= target << 16; /* id */ 1546 /* esiop_target->target_c.id |= 0x0 << 8; scxfer is 0 */ 1547 1548 for (i=0; i < 8; i++) 1549 esiop_target->esiop_lun[i] = NULL; 1550 esiop_target_register(sc, target); 1551 } 1552 if (esiop_target->esiop_lun[lun] == NULL) { 1553 esiop_target->esiop_lun[lun] = 1554 malloc(sizeof(struct esiop_lun), M_DEVBUF, 1555 M_NOWAIT|M_ZERO); 1556 if (esiop_target->esiop_lun[lun] == NULL) { 1557 aprint_error_dev(sc->sc_c.sc_dev, 1558 "can't alloc esiop_lun for " 1559 "target %d lun %d\n", 1560 target, lun); 1561 xs->error = XS_RESOURCE_SHORTAGE; 1562 scsipi_done(xs); 1563 splx(s); 1564 return; 1565 } 1566 } 1567 esiop_cmd->cmd_c.siop_target = sc->sc_c.targets[target]; 1568 esiop_cmd->cmd_c.xs = xs; 1569 esiop_cmd->cmd_c.flags = 0; 1570 esiop_cmd->cmd_c.status = CMDST_READY; 1571 1572 /* load the DMA maps */ 1573 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1574 esiop_cmd->cmd_c.dmamap_cmd, 1575 xs->cmd, xs->cmdlen, NULL, BUS_DMA_NOWAIT); 1576 if (error) { 1577 aprint_error_dev(sc->sc_c.sc_dev, 1578 "unable to load cmd DMA map: %d\n", 1579 error); 1580 xs->error = XS_DRIVER_STUFFUP; 1581 scsipi_done(xs); 1582 splx(s); 1583 return; 1584 } 1585 if (xs->xs_control & (XS_CTL_DATA_IN | XS_CTL_DATA_OUT)) { 1586 error = bus_dmamap_load(sc->sc_c.sc_dmat, 1587 esiop_cmd->cmd_c.dmamap_data, xs->data, xs->datalen, 1588 NULL, BUS_DMA_NOWAIT | BUS_DMA_STREAMING | 1589 ((xs->xs_control & XS_CTL_DATA_IN) ? 1590 BUS_DMA_READ : BUS_DMA_WRITE)); 1591 if (error) { 1592 aprint_error_dev(sc->sc_c.sc_dev, 1593 "unable to load cmd DMA map: %d", 1594 error); 1595 xs->error = XS_DRIVER_STUFFUP; 1596 scsipi_done(xs); 1597 bus_dmamap_unload(sc->sc_c.sc_dmat, 1598 esiop_cmd->cmd_c.dmamap_cmd); 1599 splx(s); 1600 return; 1601 } 1602 bus_dmamap_sync(sc->sc_c.sc_dmat, 1603 esiop_cmd->cmd_c.dmamap_data, 0, 1604 esiop_cmd->cmd_c.dmamap_data->dm_mapsize, 1605 (xs->xs_control & XS_CTL_DATA_IN) ? 1606 BUS_DMASYNC_PREREAD : BUS_DMASYNC_PREWRITE); 1607 } 1608 bus_dmamap_sync(sc->sc_c.sc_dmat, esiop_cmd->cmd_c.dmamap_cmd, 1609 0, esiop_cmd->cmd_c.dmamap_cmd->dm_mapsize, 1610 BUS_DMASYNC_PREWRITE); 1611 1612 if (xs->xs_tag_type) 1613 esiop_cmd->cmd_c.tag = xs->xs_tag_id; 1614 else 1615 esiop_cmd->cmd_c.tag = -1; 1616 siop_setuptables(&esiop_cmd->cmd_c); 1617 ESIOP_XFER(esiop_cmd, saved_offset) = htole32(SIOP_NOOFFSET); 1618 ESIOP_XFER(esiop_cmd, tlq) = htole32(A_f_c_target | A_f_c_lun); 1619 ESIOP_XFER(esiop_cmd, tlq) |= 1620 htole32((target << 8) | (lun << 16)); 1621 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1622 ESIOP_XFER(esiop_cmd, tlq) |= htole32(A_f_c_tag); 1623 ESIOP_XFER(esiop_cmd, tlq) |= 1624 htole32(esiop_cmd->cmd_c.tag << 24); 1625 } 1626 1627 esiop_table_sync(esiop_cmd, 1628 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1629 esiop_start(sc, esiop_cmd); 1630 if (xs->xs_control & XS_CTL_POLL) { 1631 /* poll for command completion */ 1632 while ((xs->xs_status & XS_STS_DONE) == 0) { 1633 delay(1000); 1634 esiop_intr(sc); 1635 } 1636 } 1637 splx(s); 1638 return; 1639 1640 case ADAPTER_REQ_GROW_RESOURCES: 1641 #ifdef SIOP_DEBUG 1642 printf("%s grow resources (%d)\n", 1643 device_xname(sc->sc_c.sc_dev), 1644 sc->sc_c.sc_adapt.adapt_openings); 1645 #endif 1646 esiop_morecbd(sc); 1647 return; 1648 1649 case ADAPTER_REQ_SET_XFER_MODE: 1650 { 1651 struct scsipi_xfer_mode *xm = arg; 1652 if (sc->sc_c.targets[xm->xm_target] == NULL) 1653 return; 1654 s = splbio(); 1655 if (xm->xm_mode & PERIPH_CAP_TQING) { 1656 sc->sc_c.targets[xm->xm_target]->flags |= TARF_TAG; 1657 /* allocate tag tables for this device */ 1658 for (lun = 0; 1659 lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 1660 if (scsipi_lookup_periph(chan, 1661 xm->xm_target, lun) != NULL) 1662 esiop_add_dev(sc, xm->xm_target, lun); 1663 } 1664 } 1665 if ((xm->xm_mode & PERIPH_CAP_WIDE16) && 1666 (sc->sc_c.features & SF_BUS_WIDE)) 1667 sc->sc_c.targets[xm->xm_target]->flags |= TARF_WIDE; 1668 if (xm->xm_mode & PERIPH_CAP_SYNC) 1669 sc->sc_c.targets[xm->xm_target]->flags |= TARF_SYNC; 1670 if ((xm->xm_mode & PERIPH_CAP_DT) && 1671 (sc->sc_c.features & SF_CHIP_DT)) 1672 sc->sc_c.targets[xm->xm_target]->flags |= TARF_DT; 1673 if ((xm->xm_mode & 1674 (PERIPH_CAP_SYNC | PERIPH_CAP_WIDE16 | PERIPH_CAP_DT)) || 1675 sc->sc_c.targets[xm->xm_target]->status == TARST_PROBING) 1676 sc->sc_c.targets[xm->xm_target]->status = TARST_ASYNC; 1677 1678 splx(s); 1679 } 1680 } 1681 } 1682 1683 static void 1684 esiop_start(struct esiop_softc *sc, struct esiop_cmd *esiop_cmd) 1685 { 1686 struct esiop_lun *esiop_lun; 1687 struct esiop_target *esiop_target; 1688 int timeout; 1689 int target, lun, slot; 1690 1691 /* 1692 * first make sure to read valid data 1693 */ 1694 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1695 1696 /* 1697 * We use a circular queue here. sc->sc_currschedslot points to a 1698 * free slot, unless we have filled the queue. Check this. 1699 */ 1700 slot = sc->sc_currschedslot; 1701 if ((esiop_script_read(sc, sc->sc_shedoffset + slot * CMD_SLOTSIZE) & 1702 A_f_cmd_free) == 0) { 1703 /* 1704 * no more free slot, no need to continue. freeze the queue 1705 * and requeue this command. 1706 */ 1707 scsipi_channel_freeze(&sc->sc_c.sc_chan, 1); 1708 sc->sc_flags |= SCF_CHAN_NOSLOT; 1709 esiop_script_write(sc, sc->sc_semoffset, 1710 esiop_script_read(sc, sc->sc_semoffset) & ~A_sem_start); 1711 esiop_script_sync(sc, 1712 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1713 esiop_cmd->cmd_c.xs->error = XS_REQUEUE; 1714 esiop_cmd->cmd_c.xs->status = SCSI_SIOP_NOCHECK; 1715 esiop_scsicmd_end(esiop_cmd, 0); 1716 return; 1717 } 1718 /* OK, we can use this slot */ 1719 1720 target = esiop_cmd->cmd_c.xs->xs_periph->periph_target; 1721 lun = esiop_cmd->cmd_c.xs->xs_periph->periph_lun; 1722 esiop_target = (struct esiop_target*)sc->sc_c.targets[target]; 1723 esiop_lun = esiop_target->esiop_lun[lun]; 1724 /* if non-tagged command active, panic: this shouldn't happen */ 1725 if (esiop_lun->active != NULL) { 1726 panic("esiop_start: tagged cmd while untagged running"); 1727 } 1728 #ifdef DIAGNOSTIC 1729 /* sanity check the tag if needed */ 1730 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1731 if (esiop_cmd->cmd_c.tag >= ESIOP_NTAG || 1732 esiop_cmd->cmd_c.tag < 0) { 1733 scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); 1734 printf(": tag id %d\n", esiop_cmd->cmd_c.tag); 1735 panic("esiop_start: invalid tag id"); 1736 } 1737 if (esiop_lun->tactive[esiop_cmd->cmd_c.tag] != NULL) 1738 panic("esiop_start: tag not free"); 1739 } 1740 #endif 1741 #ifdef SIOP_DEBUG_SCHED 1742 printf("using slot %d for DSA 0x%lx\n", slot, 1743 (u_long)esiop_cmd->cmd_c.dsa); 1744 #endif 1745 /* mark command as active */ 1746 if (esiop_cmd->cmd_c.status == CMDST_READY) 1747 esiop_cmd->cmd_c.status = CMDST_ACTIVE; 1748 else 1749 panic("esiop_start: bad status"); 1750 /* DSA table for reselect */ 1751 if (esiop_cmd->cmd_c.flags & CMDFL_TAG) { 1752 esiop_lun->tactive[esiop_cmd->cmd_c.tag] = esiop_cmd; 1753 /* DSA table for reselect */ 1754 esiop_lun->lun_tagtbl->tbl[esiop_cmd->cmd_c.tag] = 1755 htole32(esiop_cmd->cmd_c.dsa); 1756 bus_dmamap_sync(sc->sc_c.sc_dmat, 1757 esiop_lun->lun_tagtbl->tblblk->blkmap, 1758 esiop_lun->lun_tagtbl->tbl_offset, 1759 sizeof(uint32_t) * ESIOP_NTAG, BUS_DMASYNC_PREWRITE); 1760 } else { 1761 esiop_lun->active = esiop_cmd; 1762 esiop_script_write(sc, 1763 esiop_target->lun_table_offset + 1764 lun * 2 + A_target_luntbl / sizeof(uint32_t), 1765 esiop_cmd->cmd_c.dsa); 1766 } 1767 /* scheduler slot: DSA */ 1768 esiop_script_write(sc, sc->sc_shedoffset + slot * CMD_SLOTSIZE, 1769 esiop_cmd->cmd_c.dsa); 1770 /* make sure SCRIPT processor will read valid data */ 1771 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1772 /* handle timeout */ 1773 if ((esiop_cmd->cmd_c.xs->xs_control & XS_CTL_POLL) == 0) { 1774 /* start exire timer */ 1775 timeout = mstohz(esiop_cmd->cmd_c.xs->timeout); 1776 if (timeout == 0) 1777 timeout = 1; 1778 callout_reset( &esiop_cmd->cmd_c.xs->xs_callout, 1779 timeout, esiop_timeout, esiop_cmd); 1780 } 1781 /* Signal script it has some work to do */ 1782 bus_space_write_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, 1783 SIOP_ISTAT, ISTAT_SIGP); 1784 /* update the current slot, and wait for IRQ */ 1785 sc->sc_currschedslot++; 1786 if (sc->sc_currschedslot >= A_ncmd_slots) 1787 sc->sc_currschedslot = 0; 1788 } 1789 1790 void 1791 esiop_timeout(void *v) 1792 { 1793 struct esiop_cmd *esiop_cmd = v; 1794 struct esiop_softc *sc = 1795 (struct esiop_softc *)esiop_cmd->cmd_c.siop_sc; 1796 int s; 1797 #ifdef SIOP_DEBUG 1798 int slot, slotdsa; 1799 #endif 1800 1801 s = splbio(); 1802 esiop_table_sync(esiop_cmd, 1803 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1804 scsipi_printaddr(esiop_cmd->cmd_c.xs->xs_periph); 1805 #ifdef SIOP_DEBUG 1806 printf("command timeout (status %d)\n", 1807 le32toh(esiop_cmd->cmd_tables->status)); 1808 1809 esiop_script_sync(sc, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1810 for (slot = 0; slot < A_ncmd_slots; slot++) { 1811 slotdsa = esiop_script_read(sc, 1812 sc->sc_shedoffset + slot * CMD_SLOTSIZE); 1813 if ((slotdsa & 0x01) == 0) 1814 printf("slot %d not free (0x%x)\n", slot, slotdsa); 1815 } 1816 printf("istat 0x%x ", 1817 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT)); 1818 printf("DSP 0x%lx DSA 0x%x\n", 1819 (u_long)(bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSP) 1820 - sc->sc_c.sc_scriptaddr), 1821 bus_space_read_4(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_DSA)); 1822 (void)bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_CTEST2); 1823 printf("istat 0x%x\n", 1824 bus_space_read_1(sc->sc_c.sc_rt, sc->sc_c.sc_rh, SIOP_ISTAT)); 1825 #else 1826 printf("command timeout, CDB: "); 1827 scsipi_print_cdb(esiop_cmd->cmd_c.xs->cmd); 1828 printf("\n"); 1829 #endif 1830 /* reset the scsi bus */ 1831 siop_resetbus(&sc->sc_c); 1832 1833 /* deactivate callout */ 1834 callout_stop(&esiop_cmd->cmd_c.xs->xs_callout); 1835 /* 1836 * mark command has being timed out and just return; 1837 * the bus reset will generate an interrupt, 1838 * it will be handled in siop_intr() 1839 */ 1840 esiop_cmd->cmd_c.flags |= CMDFL_TIMEOUT; 1841 splx(s); 1842 } 1843 1844 void 1845 esiop_dump_script(struct esiop_softc *sc) 1846 { 1847 int i; 1848 1849 for (i = 0; i < PAGE_SIZE / 4; i += 2) { 1850 printf("0x%04x: 0x%08x 0x%08x", i * 4, 1851 le32toh(sc->sc_c.sc_script[i]), 1852 le32toh(sc->sc_c.sc_script[i + 1])); 1853 if ((le32toh(sc->sc_c.sc_script[i]) & 0xe0000000) == 1854 0xc0000000) { 1855 i++; 1856 printf(" 0x%08x", le32toh(sc->sc_c.sc_script[i + 1])); 1857 } 1858 printf("\n"); 1859 } 1860 } 1861 1862 void 1863 esiop_morecbd(struct esiop_softc *sc) 1864 { 1865 int error, i, s; 1866 bus_dma_segment_t seg; 1867 int rseg; 1868 struct esiop_cbd *newcbd; 1869 struct esiop_xfer *xfer; 1870 bus_addr_t dsa; 1871 1872 /* allocate a new list head */ 1873 newcbd = malloc(sizeof(struct esiop_cbd), M_DEVBUF, M_NOWAIT|M_ZERO); 1874 if (newcbd == NULL) { 1875 aprint_error_dev(sc->sc_c.sc_dev, 1876 "can't allocate memory for command descriptors " 1877 "head\n"); 1878 return; 1879 } 1880 1881 /* allocate cmd list */ 1882 newcbd->cmds = malloc(sizeof(struct esiop_cmd) * SIOP_NCMDPB, 1883 M_DEVBUF, M_NOWAIT|M_ZERO); 1884 if (newcbd->cmds == NULL) { 1885 aprint_error_dev(sc->sc_c.sc_dev, 1886 "can't allocate memory for command descriptors\n"); 1887 goto bad3; 1888 } 1889 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 1890 &seg, 1, &rseg, BUS_DMA_NOWAIT); 1891 if (error) { 1892 aprint_error_dev(sc->sc_c.sc_dev, 1893 "unable to allocate cbd DMA memory, error = %d\n", 1894 error); 1895 goto bad2; 1896 } 1897 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 1898 (void **)&newcbd->xfers, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 1899 if (error) { 1900 aprint_error_dev(sc->sc_c.sc_dev, 1901 "unable to map cbd DMA memory, error = %d\n", 1902 error); 1903 goto bad2; 1904 } 1905 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 1906 BUS_DMA_NOWAIT, &newcbd->xferdma); 1907 if (error) { 1908 aprint_error_dev(sc->sc_c.sc_dev, 1909 "unable to create cbd DMA map, error = %d\n", error); 1910 goto bad1; 1911 } 1912 error = bus_dmamap_load(sc->sc_c.sc_dmat, newcbd->xferdma, 1913 newcbd->xfers, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 1914 if (error) { 1915 aprint_error_dev(sc->sc_c.sc_dev, 1916 "unable to load cbd DMA map, error = %d\n", error); 1917 goto bad0; 1918 } 1919 #ifdef DEBUG 1920 printf("%s: alloc newcdb at PHY addr 0x%lx\n", 1921 device_xname(sc->sc_c.sc_dev), 1922 (unsigned long)newcbd->xferdma->dm_segs[0].ds_addr); 1923 #endif 1924 for (i = 0; i < SIOP_NCMDPB; i++) { 1925 error = bus_dmamap_create(sc->sc_c.sc_dmat, MAXPHYS, SIOP_NSG, 1926 MAXPHYS, 0, BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1927 &newcbd->cmds[i].cmd_c.dmamap_data); 1928 if (error) { 1929 aprint_error_dev(sc->sc_c.sc_dev, 1930 "unable to create data DMA map for cbd: " 1931 "error %d\n", error); 1932 goto bad0; 1933 } 1934 error = bus_dmamap_create(sc->sc_c.sc_dmat, 1935 sizeof(struct scsipi_generic), 1, 1936 sizeof(struct scsipi_generic), 0, 1937 BUS_DMA_NOWAIT | BUS_DMA_ALLOCNOW, 1938 &newcbd->cmds[i].cmd_c.dmamap_cmd); 1939 if (error) { 1940 aprint_error_dev(sc->sc_c.sc_dev, 1941 "unable to create cmd DMA map for cbd %d\n", error); 1942 goto bad0; 1943 } 1944 newcbd->cmds[i].cmd_c.siop_sc = &sc->sc_c; 1945 newcbd->cmds[i].esiop_cbdp = newcbd; 1946 xfer = &newcbd->xfers[i]; 1947 newcbd->cmds[i].cmd_tables = (struct siop_common_xfer *)xfer; 1948 memset(newcbd->cmds[i].cmd_tables, 0, 1949 sizeof(struct esiop_xfer)); 1950 dsa = newcbd->xferdma->dm_segs[0].ds_addr + 1951 i * sizeof(struct esiop_xfer); 1952 newcbd->cmds[i].cmd_c.dsa = dsa; 1953 newcbd->cmds[i].cmd_c.status = CMDST_FREE; 1954 xfer->siop_tables.t_msgout.count= htole32(1); 1955 xfer->siop_tables.t_msgout.addr = htole32(dsa); 1956 xfer->siop_tables.t_msgin.count= htole32(1); 1957 xfer->siop_tables.t_msgin.addr = htole32(dsa + 1958 offsetof(struct siop_common_xfer, msg_in)); 1959 xfer->siop_tables.t_extmsgin.count= htole32(2); 1960 xfer->siop_tables.t_extmsgin.addr = htole32(dsa + 1961 offsetof(struct siop_common_xfer, msg_in) + 1); 1962 xfer->siop_tables.t_extmsgdata.addr = htole32(dsa + 1963 offsetof(struct siop_common_xfer, msg_in) + 3); 1964 xfer->siop_tables.t_status.count= htole32(1); 1965 xfer->siop_tables.t_status.addr = htole32(dsa + 1966 offsetof(struct siop_common_xfer, status)); 1967 1968 s = splbio(); 1969 TAILQ_INSERT_TAIL(&sc->free_list, &newcbd->cmds[i], next); 1970 splx(s); 1971 #ifdef SIOP_DEBUG 1972 printf("tables[%d]: in=0x%x out=0x%x status=0x%x\n", i, 1973 le32toh(newcbd->cmds[i].cmd_tables->t_msgin.addr), 1974 le32toh(newcbd->cmds[i].cmd_tables->t_msgout.addr), 1975 le32toh(newcbd->cmds[i].cmd_tables->t_status.addr)); 1976 #endif 1977 } 1978 s = splbio(); 1979 TAILQ_INSERT_TAIL(&sc->cmds, newcbd, next); 1980 sc->sc_c.sc_adapt.adapt_openings += SIOP_NCMDPB; 1981 splx(s); 1982 return; 1983 bad0: 1984 bus_dmamap_unload(sc->sc_c.sc_dmat, newcbd->xferdma); 1985 bus_dmamap_destroy(sc->sc_c.sc_dmat, newcbd->xferdma); 1986 bad1: 1987 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 1988 bad2: 1989 free(newcbd->cmds, M_DEVBUF); 1990 bad3: 1991 free(newcbd, M_DEVBUF); 1992 } 1993 1994 void 1995 esiop_moretagtbl(struct esiop_softc *sc) 1996 { 1997 int error, i, j, s; 1998 bus_dma_segment_t seg; 1999 int rseg; 2000 struct esiop_dsatblblk *newtblblk; 2001 struct esiop_dsatbl *newtbls; 2002 uint32_t *tbls; 2003 2004 /* allocate a new list head */ 2005 newtblblk = malloc(sizeof(struct esiop_dsatblblk), 2006 M_DEVBUF, M_NOWAIT|M_ZERO); 2007 if (newtblblk == NULL) { 2008 aprint_error_dev(sc->sc_c.sc_dev, 2009 "can't allocate memory for tag DSA table block\n"); 2010 return; 2011 } 2012 2013 /* allocate tbl list */ 2014 newtbls = malloc(sizeof(struct esiop_dsatbl) * ESIOP_NTPB, 2015 M_DEVBUF, M_NOWAIT|M_ZERO); 2016 if (newtbls == NULL) { 2017 aprint_error_dev(sc->sc_c.sc_dev, 2018 "can't allocate memory for command descriptors\n"); 2019 goto bad3; 2020 } 2021 error = bus_dmamem_alloc(sc->sc_c.sc_dmat, PAGE_SIZE, PAGE_SIZE, 0, 2022 &seg, 1, &rseg, BUS_DMA_NOWAIT); 2023 if (error) { 2024 aprint_error_dev(sc->sc_c.sc_dev, 2025 "unable to allocate tbl DMA memory, error = %d\n", error); 2026 goto bad2; 2027 } 2028 error = bus_dmamem_map(sc->sc_c.sc_dmat, &seg, rseg, PAGE_SIZE, 2029 (void *)&tbls, BUS_DMA_NOWAIT|BUS_DMA_COHERENT); 2030 if (error) { 2031 aprint_error_dev(sc->sc_c.sc_dev, 2032 "unable to map tbls DMA memory, error = %d\n", error); 2033 goto bad2; 2034 } 2035 error = bus_dmamap_create(sc->sc_c.sc_dmat, PAGE_SIZE, 1, PAGE_SIZE, 0, 2036 BUS_DMA_NOWAIT, &newtblblk->blkmap); 2037 if (error) { 2038 aprint_error_dev(sc->sc_c.sc_dev, 2039 "unable to create tbl DMA map, error = %d\n", error); 2040 goto bad1; 2041 } 2042 error = bus_dmamap_load(sc->sc_c.sc_dmat, newtblblk->blkmap, 2043 tbls, PAGE_SIZE, NULL, BUS_DMA_NOWAIT); 2044 if (error) { 2045 aprint_error_dev(sc->sc_c.sc_dev, 2046 "unable to load tbl DMA map, error = %d\n", error); 2047 goto bad0; 2048 } 2049 #ifdef DEBUG 2050 printf("%s: alloc new tag DSA table at PHY addr 0x%lx\n", 2051 device_xname(sc->sc_c.sc_dev), 2052 (unsigned long)newtblblk->blkmap->dm_segs[0].ds_addr); 2053 #endif 2054 for (i = 0; i < ESIOP_NTPB; i++) { 2055 newtbls[i].tblblk = newtblblk; 2056 newtbls[i].tbl = &tbls[i * ESIOP_NTAG]; 2057 newtbls[i].tbl_offset = i * ESIOP_NTAG * sizeof(uint32_t); 2058 newtbls[i].tbl_dsa = newtblblk->blkmap->dm_segs[0].ds_addr + 2059 newtbls[i].tbl_offset; 2060 for (j = 0; j < ESIOP_NTAG; j++) 2061 newtbls[i].tbl[j] = j; 2062 s = splbio(); 2063 TAILQ_INSERT_TAIL(&sc->free_tagtbl, &newtbls[i], next); 2064 splx(s); 2065 } 2066 s = splbio(); 2067 TAILQ_INSERT_TAIL(&sc->tag_tblblk, newtblblk, next); 2068 splx(s); 2069 return; 2070 bad0: 2071 bus_dmamap_unload(sc->sc_c.sc_dmat, newtblblk->blkmap); 2072 bus_dmamap_destroy(sc->sc_c.sc_dmat, newtblblk->blkmap); 2073 bad1: 2074 bus_dmamem_free(sc->sc_c.sc_dmat, &seg, rseg); 2075 bad2: 2076 free(newtbls, M_DEVBUF); 2077 bad3: 2078 free(newtblblk, M_DEVBUF); 2079 } 2080 2081 void 2082 esiop_update_scntl3(struct esiop_softc *sc, 2083 struct siop_common_target *_siop_target) 2084 { 2085 struct esiop_target *esiop_target = (struct esiop_target *)_siop_target; 2086 2087 esiop_script_write(sc, esiop_target->lun_table_offset, 2088 esiop_target->target_c.id); 2089 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2090 } 2091 2092 void 2093 esiop_add_dev(struct esiop_softc *sc, int target, int lun) 2094 { 2095 struct esiop_target *esiop_target = 2096 (struct esiop_target *)sc->sc_c.targets[target]; 2097 struct esiop_lun *esiop_lun = esiop_target->esiop_lun[lun]; 2098 2099 if (esiop_lun->lun_tagtbl != NULL) 2100 return; /* already allocated */ 2101 2102 /* we need a tag DSA table */ 2103 esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); 2104 if (esiop_lun->lun_tagtbl == NULL) { 2105 esiop_moretagtbl(sc); 2106 esiop_lun->lun_tagtbl= TAILQ_FIRST(&sc->free_tagtbl); 2107 if (esiop_lun->lun_tagtbl == NULL) { 2108 /* no resources, run untagged */ 2109 esiop_target->target_c.flags &= ~TARF_TAG; 2110 return; 2111 } 2112 } 2113 TAILQ_REMOVE(&sc->free_tagtbl, esiop_lun->lun_tagtbl, next); 2114 /* Update LUN DSA table */ 2115 esiop_script_write(sc, esiop_target->lun_table_offset + 2116 lun * 2 + A_target_luntbl_tag / sizeof(uint32_t), 2117 esiop_lun->lun_tagtbl->tbl_dsa); 2118 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2119 } 2120 2121 void 2122 esiop_del_dev(struct esiop_softc *sc, int target, int lun) 2123 { 2124 struct esiop_target *esiop_target; 2125 2126 #ifdef SIOP_DEBUG 2127 printf("%s:%d:%d: free lun sw entry\n", 2128 device_xname(sc->sc_c.sc_dev), target, lun); 2129 #endif 2130 if (sc->sc_c.targets[target] == NULL) 2131 return; 2132 esiop_target = (struct esiop_target *)sc->sc_c.targets[target]; 2133 free(esiop_target->esiop_lun[lun], M_DEVBUF); 2134 esiop_target->esiop_lun[lun] = NULL; 2135 } 2136 2137 void 2138 esiop_target_register(struct esiop_softc *sc, uint32_t target) 2139 { 2140 struct esiop_target *esiop_target = 2141 (struct esiop_target *)sc->sc_c.targets[target]; 2142 struct esiop_lun *esiop_lun; 2143 int lun; 2144 2145 /* get a DSA table for this target */ 2146 esiop_target->lun_table_offset = sc->sc_free_offset; 2147 sc->sc_free_offset += sc->sc_c.sc_chan.chan_nluns * 2 + 2; 2148 #ifdef SIOP_DEBUG 2149 printf("%s: lun table for target %d offset %d free offset %d\n", 2150 device_xname(sc->sc_c.sc_dev), target, 2151 esiop_target->lun_table_offset, 2152 sc->sc_free_offset); 2153 #endif 2154 /* first 32 bytes are ID (for select) */ 2155 esiop_script_write(sc, esiop_target->lun_table_offset, 2156 esiop_target->target_c.id); 2157 /* Record this table in the target DSA table */ 2158 esiop_script_write(sc, 2159 sc->sc_target_table_offset + target, 2160 (esiop_target->lun_table_offset * sizeof(uint32_t)) + 2161 sc->sc_c.sc_scriptaddr); 2162 /* if we have a tag table, register it */ 2163 for (lun = 0; lun < sc->sc_c.sc_chan.chan_nluns; lun++) { 2164 esiop_lun = esiop_target->esiop_lun[lun]; 2165 if (esiop_lun == NULL) 2166 continue; 2167 if (esiop_lun->lun_tagtbl) 2168 esiop_script_write(sc, esiop_target->lun_table_offset + 2169 lun * 2 + A_target_luntbl_tag / sizeof(uint32_t), 2170 esiop_lun->lun_tagtbl->tbl_dsa); 2171 } 2172 esiop_script_sync(sc, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2173 } 2174 2175 #ifdef SIOP_STATS 2176 void 2177 esiop_printstats(void) 2178 { 2179 2180 printf("esiop_stat_intr %d\n", esiop_stat_intr); 2181 printf("esiop_stat_intr_shortxfer %d\n", esiop_stat_intr_shortxfer); 2182 printf("esiop_stat_intr_xferdisc %d\n", esiop_stat_intr_xferdisc); 2183 printf("esiop_stat_intr_sdp %d\n", esiop_stat_intr_sdp); 2184 printf("esiop_stat_intr_done %d\n", esiop_stat_intr_done); 2185 printf("esiop_stat_intr_lunresel %d\n", esiop_stat_intr_lunresel); 2186 printf("esiop_stat_intr_qfull %d\n", esiop_stat_intr_qfull); 2187 } 2188 #endif 2189
Indexes created Tue Sep 30 11:09:46 GMT 2025