33 */ 34 35 /* 36 * Special thanks to Leonard N. Zubkoff for writing such a complete and 37 * well documented Mylex/BusLogic MultiMaster driver for Linux. Support 38 * in this driver for the wide range of MultiMaster controllers and 39 * firmware revisions, with their otherwise undocumented quirks, would not 40 * have been possible without his efforts. 41 */ 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/malloc.h> 46#include <sys/buf.h> 47#include <sys/kernel.h> 48#include <sys/sysctl.h> 49#include <sys/bus.h> 50 51/* 52 * XXX It appears that BusLogic PCI adapters go out to lunch if you 53 * attempt to perform memory mapped I/O. 54 */ 55#if 0 56#include "pci.h" 57#if NPCI > 0 58#include <machine/bus_memio.h> 59#endif 60#endif 61#include <machine/bus_pio.h> 62#include <machine/bus.h> 63#include <machine/clock.h> 64#include <sys/rman.h> 65 66#include <cam/cam.h> 67#include <cam/cam_ccb.h> 68#include <cam/cam_sim.h> 69#include <cam/cam_xpt_sim.h> 70#include <cam/cam_debug.h> 71 72#include <cam/scsi/scsi_message.h> 73 74#include <vm/vm.h> 75#include <vm/pmap.h> 76 77#include <dev/buslogic/btreg.h> 78 79#ifndef MAX 80#define MAX(a, b) ((a) > (b) ? (a) : (b)) 81#endif 82 83/* MailBox Management functions */ 84static __inline void btnextinbox(struct bt_softc *bt); 85static __inline void btnextoutbox(struct bt_softc *bt); 86 87static __inline void 88btnextinbox(struct bt_softc *bt) 89{ 90 if (bt->cur_inbox == bt->last_inbox) 91 bt->cur_inbox = bt->in_boxes; 92 else 93 bt->cur_inbox++; 94} 95 96static __inline void 97btnextoutbox(struct bt_softc *bt) 98{ 99 if (bt->cur_outbox == bt->last_outbox) 100 bt->cur_outbox = bt->out_boxes; 101 else 102 bt->cur_outbox++; 103} 104 105/* CCB Mangement functions */ 106static __inline u_int32_t btccbvtop(struct bt_softc *bt, 107 struct bt_ccb *bccb); 108static __inline struct bt_ccb* btccbptov(struct bt_softc *bt, 109 u_int32_t ccb_addr); 110static __inline u_int32_t btsensepaddr(struct bt_softc *bt, 111 struct bt_ccb *bccb); 112static __inline struct scsi_sense_data* btsensevaddr(struct bt_softc *bt, 113 struct bt_ccb *bccb); 114 115static __inline u_int32_t 116btccbvtop(struct bt_softc *bt, struct bt_ccb *bccb) 117{ 118 return (bt->bt_ccb_physbase 119 + (u_int32_t)((caddr_t)bccb - (caddr_t)bt->bt_ccb_array)); 120} 121 122static __inline struct bt_ccb * 123btccbptov(struct bt_softc *bt, u_int32_t ccb_addr) 124{ 125 return (bt->bt_ccb_array + 126 ((struct bt_ccb*)ccb_addr-(struct bt_ccb*)bt->bt_ccb_physbase)); 127} 128 129static __inline u_int32_t 130btsensepaddr(struct bt_softc *bt, struct bt_ccb *bccb) 131{ 132 u_int index; 133 134 index = (u_int)(bccb - bt->bt_ccb_array); 135 return (bt->sense_buffers_physbase 136 + (index * sizeof(struct scsi_sense_data))); 137} 138 139static __inline struct scsi_sense_data * 140btsensevaddr(struct bt_softc *bt, struct bt_ccb *bccb) 141{ 142 u_int index; 143 144 index = (u_int)(bccb - bt->bt_ccb_array); 145 return (bt->sense_buffers + index); 146} 147 148static __inline struct bt_ccb* btgetccb(struct bt_softc *bt); 149static __inline void btfreeccb(struct bt_softc *bt, 150 struct bt_ccb *bccb); 151static void btallocccbs(struct bt_softc *bt); 152static bus_dmamap_callback_t btexecuteccb; 153static void btdone(struct bt_softc *bt, struct bt_ccb *bccb, 154 bt_mbi_comp_code_t comp_code); 155 156/* Host adapter command functions */ 157static int btreset(struct bt_softc* bt, int hard_reset); 158 159/* Initialization functions */ 160static int btinitmboxes(struct bt_softc *bt); 161static bus_dmamap_callback_t btmapmboxes; 162static bus_dmamap_callback_t btmapccbs; 163static bus_dmamap_callback_t btmapsgs; 164 165/* Transfer Negotiation Functions */ 166static void btfetchtransinfo(struct bt_softc *bt, 167 struct ccb_trans_settings *cts); 168 169/* CAM SIM entry points */ 170#define ccb_bccb_ptr spriv_ptr0 171#define ccb_bt_ptr spriv_ptr1 172static void btaction(struct cam_sim *sim, union ccb *ccb); 173static void btpoll(struct cam_sim *sim); 174 175/* Our timeout handler */ 176timeout_t bttimeout; 177 178u_long bt_unit = 0; 179 180/* 181 * XXX 182 * Do our own re-probe protection until a configuration 183 * manager can do it for us. This ensures that we don't 184 * reprobe a card already found by the EISA or PCI probes. 185 */ 186struct bt_isa_port bt_isa_ports[] = 187{ 188 { 0x130, 0, 4 }, 189 { 0x134, 0, 5 }, 190 { 0x230, 0, 2 }, 191 { 0x234, 0, 3 }, 192 { 0x330, 0, 0 }, 193 { 0x334, 0, 1 } 194}; 195 196/* 197 * I/O ports listed in the order enumerated by the 198 * card for certain op codes. 199 */ 200u_int16_t bt_board_ports[] = 201{ 202 0x330, 203 0x334, 204 0x230, 205 0x234, 206 0x130, 207 0x134 208}; 209 210/* Exported functions */ 211void 212bt_init_softc(device_t dev, struct resource *port, 213 struct resource *irq, struct resource *drq) 214{ 215 struct bt_softc *bt = device_get_softc(dev); 216 217 SLIST_INIT(&bt->free_bt_ccbs); 218 LIST_INIT(&bt->pending_ccbs); 219 SLIST_INIT(&bt->sg_maps); 220 bt->dev = dev; 221 bt->unit = device_get_unit(dev); 222 bt->port = port; 223 bt->irq = irq; 224 bt->drq = drq; 225 bt->tag = rman_get_bustag(port); 226 bt->bsh = rman_get_bushandle(port); 227} 228 229void 230bt_free_softc(device_t dev) 231{ 232 struct bt_softc *bt = device_get_softc(dev); 233 234 switch (bt->init_level) { 235 default: 236 case 11: 237 bus_dmamap_unload(bt->sense_dmat, bt->sense_dmamap); 238 case 10: 239 bus_dmamem_free(bt->sense_dmat, bt->sense_buffers, 240 bt->sense_dmamap); 241 case 9: 242 bus_dma_tag_destroy(bt->sense_dmat); 243 case 8: 244 { 245 struct sg_map_node *sg_map; 246 247 while ((sg_map = SLIST_FIRST(&bt->sg_maps))!= NULL) { 248 SLIST_REMOVE_HEAD(&bt->sg_maps, links); 249 bus_dmamap_unload(bt->sg_dmat, 250 sg_map->sg_dmamap); 251 bus_dmamem_free(bt->sg_dmat, sg_map->sg_vaddr, 252 sg_map->sg_dmamap); 253 free(sg_map, M_DEVBUF); 254 } 255 bus_dma_tag_destroy(bt->sg_dmat); 256 } 257 case 7: 258 bus_dmamap_unload(bt->ccb_dmat, bt->ccb_dmamap); 259 case 6: 260 bus_dmamem_free(bt->ccb_dmat, bt->bt_ccb_array, 261 bt->ccb_dmamap); 262 bus_dmamap_destroy(bt->ccb_dmat, bt->ccb_dmamap); 263 case 5: 264 bus_dma_tag_destroy(bt->ccb_dmat); 265 case 4: 266 bus_dmamap_unload(bt->mailbox_dmat, bt->mailbox_dmamap); 267 case 3: 268 bus_dmamem_free(bt->mailbox_dmat, bt->in_boxes, 269 bt->mailbox_dmamap); 270 bus_dmamap_destroy(bt->mailbox_dmat, bt->mailbox_dmamap); 271 case 2: 272 bus_dma_tag_destroy(bt->buffer_dmat); 273 case 1: 274 bus_dma_tag_destroy(bt->mailbox_dmat); 275 case 0: 276 break; 277 } 278} 279 280int 281bt_port_probe(device_t dev, struct bt_probe_info *info) 282{ 283 struct bt_softc *bt = device_get_softc(dev); 284 config_data_t config_data; 285 int error; 286 287 /* See if there is really a card present */ 288 if (bt_probe(dev) || bt_fetch_adapter_info(dev)) 289 return(1); 290 291 /* 292 * Determine our IRQ, and DMA settings and 293 * export them to the configuration system. 294 */ 295 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, 296 (u_int8_t*)&config_data, sizeof(config_data), 297 DEFAULT_CMD_TIMEOUT); 298 if (error != 0) { 299 printf("bt_port_probe: Could not determine IRQ or DMA " 300 "settings for adapter.\n"); 301 return (1); 302 } 303 304 if (bt->model[0] == '5') { 305 /* DMA settings only make sense for ISA cards */ 306 switch (config_data.dma_chan) { 307 case DMA_CHAN_5: 308 info->drq = 5; 309 break; 310 case DMA_CHAN_6: 311 info->drq = 6; 312 break; 313 case DMA_CHAN_7: 314 info->drq = 7; 315 break; 316 default: 317 printf("bt_port_probe: Invalid DMA setting " 318 "detected for adapter.\n"); 319 return (1); 320 } 321 } else { 322 /* VL/EISA/PCI DMA */ 323 info->drq = -1; 324 } 325 switch (config_data.irq) { 326 case IRQ_9: 327 case IRQ_10: 328 case IRQ_11: 329 case IRQ_12: 330 case IRQ_14: 331 case IRQ_15: 332 info->irq = ffs(config_data.irq) + 8; 333 break; 334 default: 335 printf("bt_port_probe: Invalid IRQ setting %x" 336 "detected for adapter.\n", config_data.irq); 337 return (1); 338 } 339 return (0); 340} 341 342/* 343 * Probe the adapter and verify that the card is a BusLogic. 344 */ 345int 346bt_probe(device_t dev) 347{ 348 struct bt_softc *bt = device_get_softc(dev); 349 esetup_info_data_t esetup_info; 350 u_int status; 351 u_int intstat; 352 u_int geometry; 353 int error; 354 u_int8_t param; 355 356 /* 357 * See if the three I/O ports look reasonable. 358 * Touch the minimal number of registers in the 359 * failure case. 360 */ 361 status = bt_inb(bt, STATUS_REG); 362 if ((status == 0) 363 || (status & (DIAG_ACTIVE|CMD_REG_BUSY| 364 STATUS_REG_RSVD|CMD_INVALID)) != 0) { 365 if (bootverbose) 366 device_printf(dev, "Failed Status Reg Test - %x\n", 367 status); 368 return (ENXIO); 369 } 370 371 intstat = bt_inb(bt, INTSTAT_REG); 372 if ((intstat & INTSTAT_REG_RSVD) != 0) { 373 device_printf(dev, "Failed Intstat Reg Test\n"); 374 return (ENXIO); 375 } 376 377 geometry = bt_inb(bt, GEOMETRY_REG); 378 if (geometry == 0xFF) { 379 if (bootverbose) 380 device_printf(dev, "Failed Geometry Reg Test\n"); 381 return (ENXIO); 382 } 383 384 /* 385 * Looking good so far. Final test is to reset the 386 * adapter and attempt to fetch the extended setup 387 * information. This should filter out all 1542 cards. 388 */ 389 if ((error = btreset(bt, /*hard_reset*/TRUE)) != 0) { 390 if (bootverbose) 391 device_printf(dev, "Failed Reset\n"); 392 return (ENXIO); 393 } 394 395 param = sizeof(esetup_info); 396 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, ¶m, /*parmlen*/1, 397 (u_int8_t*)&esetup_info, sizeof(esetup_info), 398 DEFAULT_CMD_TIMEOUT); 399 if (error != 0) { 400 return (ENXIO); 401 } 402 403 return (0); 404} 405 406/* 407 * Pull the boards setup information and record it in our softc. 408 */ 409int 410bt_fetch_adapter_info(device_t dev) 411{ 412 struct bt_softc *bt = device_get_softc(dev); 413 board_id_data_t board_id; 414 esetup_info_data_t esetup_info; 415 config_data_t config_data; 416 int error; 417 u_int8_t length_param; 418 419 /* First record the firmware version */ 420 error = bt_cmd(bt, BOP_INQUIRE_BOARD_ID, NULL, /*parmlen*/0, 421 (u_int8_t*)&board_id, sizeof(board_id), 422 DEFAULT_CMD_TIMEOUT); 423 if (error != 0) { 424 device_printf(dev, "bt_fetch_adapter_info - Failed Get Board Info\n"); 425 return (error); 426 } 427 bt->firmware_ver[0] = board_id.firmware_rev_major; 428 bt->firmware_ver[1] = '.'; 429 bt->firmware_ver[2] = board_id.firmware_rev_minor; 430 bt->firmware_ver[3] = '\0'; 431 432 /* 433 * Depending on the firmware major and minor version, 434 * we may be able to fetch additional minor version info. 435 */ 436 if (bt->firmware_ver[0] > '0') { 437 438 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_3DIG, NULL, /*parmlen*/0, 439 (u_int8_t*)&bt->firmware_ver[3], 1, 440 DEFAULT_CMD_TIMEOUT); 441 if (error != 0) { 442 device_printf(dev, 443 "bt_fetch_adapter_info - Failed Get " 444 "Firmware 3rd Digit\n"); 445 return (error); 446 } 447 if (bt->firmware_ver[3] == ' ') 448 bt->firmware_ver[3] = '\0'; 449 bt->firmware_ver[4] = '\0'; 450 } 451 452 if (strcmp(bt->firmware_ver, "3.3") >= 0) { 453 454 error = bt_cmd(bt, BOP_INQUIRE_FW_VER_4DIG, NULL, /*parmlen*/0, 455 (u_int8_t*)&bt->firmware_ver[4], 1, 456 DEFAULT_CMD_TIMEOUT); 457 if (error != 0) { 458 device_printf(dev, 459 "bt_fetch_adapter_info - Failed Get " 460 "Firmware 4th Digit\n"); 461 return (error); 462 } 463 if (bt->firmware_ver[4] == ' ') 464 bt->firmware_ver[4] = '\0'; 465 bt->firmware_ver[5] = '\0'; 466 } 467 468 /* 469 * Some boards do not handle the "recently documented" 470 * Inquire Board Model Number command correctly or do not give 471 * exact information. Use the Firmware and Extended Setup 472 * information in these cases to come up with the right answer. 473 * The major firmware revision number indicates: 474 * 475 * 5.xx BusLogic "W" Series Host Adapters: 476 * BT-948/958/958D 477 * 4.xx BusLogic "C" Series Host Adapters: 478 * BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF 479 * 3.xx BusLogic "S" Series Host Adapters: 480 * BT-747S/747D/757S/757D/445S/545S/542D 481 * BT-542B/742A (revision H) 482 * 2.xx BusLogic "A" Series Host Adapters: 483 * BT-542B/742A (revision G and below) 484 * 0.xx AMI FastDisk VLB/EISA BusLogic Clone Host Adapter 485 */ 486 length_param = sizeof(esetup_info); 487 error = bt_cmd(bt, BOP_INQUIRE_ESETUP_INFO, &length_param, /*parmlen*/1, 488 (u_int8_t*)&esetup_info, sizeof(esetup_info), 489 DEFAULT_CMD_TIMEOUT); 490 if (error != 0) { 491 return (error); 492 } 493 494 bt->bios_addr = esetup_info.bios_addr << 12; 495 496 if (esetup_info.bus_type == 'A' 497 && bt->firmware_ver[0] == '2') { 498 snprintf(bt->model, sizeof(bt->model), "542B"); 499 } else if (esetup_info.bus_type == 'E' 500 && (strncmp(bt->firmware_ver, "2.1", 3) == 0 501 || strncmp(bt->firmware_ver, "2.20", 4) == 0)) { 502 snprintf(bt->model, sizeof(bt->model), "742A"); 503 } else if (esetup_info.bus_type == 'E' 504 && bt->firmware_ver[0] == '0') { 505 /* AMI FastDisk EISA Series 441 0.x */ 506 snprintf(bt->model, sizeof(bt->model), "747A"); 507 } else { 508 ha_model_data_t model_data; 509 int i; 510 511 length_param = sizeof(model_data); 512 error = bt_cmd(bt, BOP_INQUIRE_MODEL, &length_param, 1, 513 (u_int8_t*)&model_data, sizeof(model_data), 514 DEFAULT_CMD_TIMEOUT); 515 if (error != 0) { 516 device_printf(dev, 517 "bt_fetch_adapter_info - Failed Inquire " 518 "Model Number\n"); 519 return (error); 520 } 521 for (i = 0; i < sizeof(model_data.ascii_model); i++) { 522 bt->model[i] = model_data.ascii_model[i]; 523 if (bt->model[i] == ' ') 524 break; 525 } 526 bt->model[i] = '\0'; 527 } 528 529 bt->level_trigger_ints = esetup_info.level_trigger_ints ? 1 : 0; 530 531 /* SG element limits */ 532 bt->max_sg = esetup_info.max_sg; 533 534 /* Set feature flags */ 535 bt->wide_bus = esetup_info.wide_bus; 536 bt->diff_bus = esetup_info.diff_bus; 537 bt->ultra_scsi = esetup_info.ultra_scsi; 538 539 if ((bt->firmware_ver[0] == '5') 540 || (bt->firmware_ver[0] == '4' && bt->wide_bus)) 541 bt->extended_lun = TRUE; 542 543 bt->strict_rr = (strcmp(bt->firmware_ver, "3.31") >= 0); 544 545 bt->extended_trans = 546 ((bt_inb(bt, GEOMETRY_REG) & EXTENDED_TRANSLATION) != 0); 547 548 /* 549 * Determine max CCB count and whether tagged queuing is 550 * available based on controller type. Tagged queuing 551 * only works on 'W' series adapters, 'C' series adapters 552 * with firmware of rev 4.42 and higher, and 'S' series 553 * adapters with firmware of rev 3.35 and higher. The 554 * maximum CCB counts are as follows: 555 * 556 * 192 BT-948/958/958D 557 * 100 BT-946C/956C/956CD/747C/757C/757CD/445C 558 * 50 BT-545C/540CF 559 * 30 BT-747S/747D/757S/757D/445S/545S/542D/542B/742A 560 */ 561 if (bt->firmware_ver[0] == '5') { 562 bt->max_ccbs = 192; 563 bt->tag_capable = TRUE; 564 } else if (bt->firmware_ver[0] == '4') { 565 if (bt->model[0] == '5') 566 bt->max_ccbs = 50; 567 else 568 bt->max_ccbs = 100; 569 bt->tag_capable = (strcmp(bt->firmware_ver, "4.22") >= 0); 570 } else { 571 bt->max_ccbs = 30; 572 if (bt->firmware_ver[0] == '3' 573 && (strcmp(bt->firmware_ver, "3.35") >= 0)) 574 bt->tag_capable = TRUE; 575 else 576 bt->tag_capable = FALSE; 577 } 578 579 if (bt->tag_capable != FALSE) 580 bt->tags_permitted = ALL_TARGETS; 581 582 /* Determine Sync/Wide/Disc settings */ 583 if (bt->firmware_ver[0] >= '4') { 584 auto_scsi_data_t auto_scsi_data; 585 fetch_lram_params_t fetch_lram_params; 586 int error; 587 588 /* 589 * These settings are stored in the 590 * AutoSCSI data in LRAM of 'W' and 'C' 591 * adapters. 592 */ 593 fetch_lram_params.offset = AUTO_SCSI_BYTE_OFFSET; 594 fetch_lram_params.response_len = sizeof(auto_scsi_data); 595 error = bt_cmd(bt, BOP_FETCH_LRAM, 596 (u_int8_t*)&fetch_lram_params, 597 sizeof(fetch_lram_params), 598 (u_int8_t*)&auto_scsi_data, 599 sizeof(auto_scsi_data), DEFAULT_CMD_TIMEOUT); 600 601 if (error != 0) { 602 device_printf(dev, 603 "bt_fetch_adapter_info - Failed " 604 "Get Auto SCSI Info\n"); 605 return (error); 606 } 607 608 bt->disc_permitted = auto_scsi_data.low_disc_permitted 609 | (auto_scsi_data.high_disc_permitted << 8); 610 bt->sync_permitted = auto_scsi_data.low_sync_permitted 611 | (auto_scsi_data.high_sync_permitted << 8); 612 bt->fast_permitted = auto_scsi_data.low_fast_permitted 613 | (auto_scsi_data.high_fast_permitted << 8); 614 bt->ultra_permitted = auto_scsi_data.low_ultra_permitted 615 | (auto_scsi_data.high_ultra_permitted << 8); 616 bt->wide_permitted = auto_scsi_data.low_wide_permitted 617 | (auto_scsi_data.high_wide_permitted << 8); 618 619 if (bt->ultra_scsi == FALSE) 620 bt->ultra_permitted = 0; 621 622 if (bt->wide_bus == FALSE) 623 bt->wide_permitted = 0; 624 } else { 625 /* 626 * 'S' and 'A' series have this information in the setup 627 * information structure. 628 */ 629 setup_data_t setup_info; 630 631 length_param = sizeof(setup_info); 632 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, &length_param, 633 /*paramlen*/1, (u_int8_t*)&setup_info, 634 sizeof(setup_info), DEFAULT_CMD_TIMEOUT); 635 636 if (error != 0) { 637 device_printf(dev, 638 "bt_fetch_adapter_info - Failed " 639 "Get Setup Info\n"); 640 return (error); 641 } 642 643 if (setup_info.initiate_sync != 0) { 644 bt->sync_permitted = ALL_TARGETS; 645 646 if (bt->model[0] == '7') { 647 if (esetup_info.sync_neg10MB != 0) 648 bt->fast_permitted = ALL_TARGETS; 649 if (strcmp(bt->model, "757") == 0) 650 bt->wide_permitted = ALL_TARGETS; 651 } 652 } 653 bt->disc_permitted = ALL_TARGETS; 654 } 655 656 /* We need as many mailboxes as we can have ccbs */ 657 bt->num_boxes = bt->max_ccbs; 658 659 /* Determine our SCSI ID */ 660 661 error = bt_cmd(bt, BOP_INQUIRE_CONFIG, NULL, /*parmlen*/0, 662 (u_int8_t*)&config_data, sizeof(config_data), 663 DEFAULT_CMD_TIMEOUT); 664 if (error != 0) { 665 device_printf(dev, 666 "bt_fetch_adapter_info - Failed Get Config\n"); 667 return (error); 668 } 669 bt->scsi_id = config_data.scsi_id; 670 671 return (0); 672} 673 674/* 675 * Start the board, ready for normal operation 676 */ 677int 678bt_init(device_t dev) 679{ 680 struct bt_softc *bt = device_get_softc(dev); 681 682 /* Announce the Adapter */ 683 device_printf(dev, "BT-%s FW Rev. %s ", bt->model, bt->firmware_ver); 684 685 if (bt->ultra_scsi != 0) 686 printf("Ultra "); 687 688 if (bt->wide_bus != 0) 689 printf("Wide "); 690 else 691 printf("Narrow "); 692 693 if (bt->diff_bus != 0) 694 printf("Diff "); 695 696 printf("SCSI Host Adapter, SCSI ID %d, %d CCBs\n", bt->scsi_id, 697 bt->max_ccbs); 698 699 /* 700 * Create our DMA tags. These tags define the kinds of device 701 * accessable memory allocations and memory mappings we will 702 * need to perform during normal operation. 703 * 704 * Unless we need to further restrict the allocation, we rely 705 * on the restrictions of the parent dmat, hence the common 706 * use of MAXADDR and MAXSIZE. 707 */ 708 709 /* DMA tag for mapping buffers into device visible space. */
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790 /*lowaddr*/BUS_SPACE_MAXADDR, 791 /*highaddr*/BUS_SPACE_MAXADDR, 792 /*filter*/NULL, /*filterarg*/NULL, 793 PAGE_SIZE, /*nsegments*/1, 794 /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, 795 /*flags*/0, &bt->sg_dmat) != 0) { 796 goto error_exit; 797 } 798 799 bt->init_level++; 800 801 /* Perform initial CCB allocation */ 802 bzero(bt->bt_ccb_array, bt->max_ccbs * sizeof(struct bt_ccb)); 803 btallocccbs(bt); 804 805 if (bt->num_ccbs == 0) { 806 device_printf(dev, 807 "bt_init - Unable to allocate initial ccbs\n"); 808 goto error_exit; 809 } 810 811 /* 812 * Note that we are going and return (to probe) 813 */ 814 return 0; 815 816error_exit: 817 818 return (ENXIO); 819} 820 821int 822bt_attach(device_t dev) 823{ 824 struct bt_softc *bt = device_get_softc(dev); 825 int tagged_dev_openings; 826 struct cam_devq *devq; 827 int error; 828 829 /* 830 * We reserve 1 ccb for error recovery, so don't 831 * tell the XPT about it. 832 */ 833 if (bt->tag_capable != 0) 834 tagged_dev_openings = bt->max_ccbs - 1; 835 else 836 tagged_dev_openings = 0; 837 838 /* 839 * Create the device queue for our SIM. 840 */ 841 devq = cam_simq_alloc(bt->max_ccbs - 1); 842 if (devq == NULL) 843 return (ENOMEM); 844 845 /* 846 * Construct our SIM entry 847 */ 848 bt->sim = cam_sim_alloc(btaction, btpoll, "bt", bt, bt->unit, 849 2, tagged_dev_openings, devq); 850 if (bt->sim == NULL) { 851 cam_simq_free(devq); 852 return (ENOMEM); 853 } 854 855 if (xpt_bus_register(bt->sim, 0) != CAM_SUCCESS) { 856 cam_sim_free(bt->sim, /*free_devq*/TRUE); 857 return (ENXIO); 858 } 859 860 if (xpt_create_path(&bt->path, /*periph*/NULL, 861 cam_sim_path(bt->sim), CAM_TARGET_WILDCARD, 862 CAM_LUN_WILDCARD) != CAM_REQ_CMP) { 863 xpt_bus_deregister(cam_sim_path(bt->sim)); 864 cam_sim_free(bt->sim, /*free_devq*/TRUE); 865 return (ENXIO); 866 } 867 868 /* 869 * Setup interrupt. 870 */ 871 error = bus_setup_intr(dev, bt->irq, INTR_TYPE_CAM, 872 bt_intr, bt, &bt->ih); 873 if (error) { 874 device_printf(dev, "bus_setup_intr() failed: %d\n", error); 875 return (error); 876 } 877 878 return (0); 879} 880 881int 882bt_check_probed_iop(u_int ioport) 883{ 884 u_int i; 885 886 for (i = 0; i < BT_NUM_ISAPORTS; i++) { 887 if (bt_isa_ports[i].addr == ioport) { 888 if (bt_isa_ports[i].probed != 0) 889 return (1); 890 else { 891 return (0); 892 } 893 } 894 } 895 return (1); 896} 897 898void 899bt_mark_probed_bio(isa_compat_io_t port) 900{ 901 if (port < BIO_DISABLED) 902 bt_mark_probed_iop(bt_board_ports[port]); 903} 904 905void 906bt_mark_probed_iop(u_int ioport) 907{ 908 u_int i; 909 910 for (i = 0; i < BT_NUM_ISAPORTS; i++) { 911 if (ioport == bt_isa_ports[i].addr) { 912 bt_isa_ports[i].probed = 1; 913 break; 914 } 915 } 916} 917 918void 919bt_find_probe_range(int ioport, int *port_index, int *max_port_index) 920{ 921 if (ioport > 0) { 922 int i; 923 924 for (i = 0;i < BT_NUM_ISAPORTS; i++) 925 if (ioport <= bt_isa_ports[i].addr) 926 break; 927 if ((i >= BT_NUM_ISAPORTS) 928 || (ioport != bt_isa_ports[i].addr)) { 929 printf(" 930bt_isa_probe: Invalid baseport of 0x%x specified. 931bt_isa_probe: Nearest valid baseport is 0x%x. 932bt_isa_probe: Failing probe.\n", 933 ioport, 934 (i < BT_NUM_ISAPORTS) 935 ? bt_isa_ports[i].addr 936 : bt_isa_ports[BT_NUM_ISAPORTS - 1].addr); 937 *port_index = *max_port_index = -1; 938 return; 939 } 940 *port_index = *max_port_index = bt_isa_ports[i].bio; 941 } else { 942 *port_index = 0; 943 *max_port_index = BT_NUM_ISAPORTS - 1; 944 } 945} 946 947int 948bt_iop_from_bio(isa_compat_io_t bio_index) 949{ 950 if (bio_index >= 0 && bio_index < BT_NUM_ISAPORTS) 951 return (bt_board_ports[bio_index]); 952 return (-1); 953} 954 955 956static void 957btallocccbs(struct bt_softc *bt) 958{ 959 struct bt_ccb *next_ccb; 960 struct sg_map_node *sg_map; 961 bus_addr_t physaddr; 962 bt_sg_t *segs; 963 int newcount; 964 int i; 965 966 if (bt->num_ccbs >= bt->max_ccbs) 967 /* Can't allocate any more */ 968 return; 969 970 next_ccb = &bt->bt_ccb_array[bt->num_ccbs]; 971 972 sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); 973 974 if (sg_map == NULL) 975 goto error_exit; 976 977 /* Allocate S/G space for the next batch of CCBS */ 978 if (bus_dmamem_alloc(bt->sg_dmat, (void **)&sg_map->sg_vaddr, 979 BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) { 980 free(sg_map, M_DEVBUF); 981 goto error_exit; 982 } 983 984 SLIST_INSERT_HEAD(&bt->sg_maps, sg_map, links); 985 986 bus_dmamap_load(bt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr, 987 PAGE_SIZE, btmapsgs, bt, /*flags*/0); 988 989 segs = sg_map->sg_vaddr; 990 physaddr = sg_map->sg_physaddr; 991 992 newcount = (PAGE_SIZE / (BT_NSEG * sizeof(bt_sg_t))); 993 for (i = 0; bt->num_ccbs < bt->max_ccbs && i < newcount; i++) { 994 int error; 995 996 next_ccb->sg_list = segs; 997 next_ccb->sg_list_phys = physaddr; 998 next_ccb->flags = BCCB_FREE; 999 error = bus_dmamap_create(bt->buffer_dmat, /*flags*/0, 1000 &next_ccb->dmamap); 1001 if (error != 0) 1002 break; 1003 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, next_ccb, links); 1004 segs += BT_NSEG; 1005 physaddr += (BT_NSEG * sizeof(bt_sg_t)); 1006 next_ccb++; 1007 bt->num_ccbs++; 1008 } 1009 1010 /* Reserve a CCB for error recovery */ 1011 if (bt->recovery_bccb == NULL) { 1012 bt->recovery_bccb = SLIST_FIRST(&bt->free_bt_ccbs); 1013 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); 1014 } 1015 1016 if (SLIST_FIRST(&bt->free_bt_ccbs) != NULL) 1017 return; 1018 1019error_exit: 1020 device_printf(bt->dev, "Can't malloc BCCBs\n"); 1021} 1022 1023static __inline void 1024btfreeccb(struct bt_softc *bt, struct bt_ccb *bccb) 1025{ 1026 int s; 1027 1028 s = splcam(); 1029 if ((bccb->flags & BCCB_ACTIVE) != 0) 1030 LIST_REMOVE(&bccb->ccb->ccb_h, sim_links.le); 1031 if (bt->resource_shortage != 0 1032 && (bccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { 1033 bccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 1034 bt->resource_shortage = FALSE; 1035 } 1036 bccb->flags = BCCB_FREE; 1037 SLIST_INSERT_HEAD(&bt->free_bt_ccbs, bccb, links); 1038 bt->active_ccbs--; 1039 splx(s); 1040} 1041 1042static __inline struct bt_ccb* 1043btgetccb(struct bt_softc *bt) 1044{ 1045 struct bt_ccb* bccb; 1046 int s; 1047 1048 s = splcam(); 1049 if ((bccb = SLIST_FIRST(&bt->free_bt_ccbs)) != NULL) { 1050 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); 1051 bt->active_ccbs++; 1052 } else { 1053 btallocccbs(bt); 1054 bccb = SLIST_FIRST(&bt->free_bt_ccbs); 1055 if (bccb != NULL) { 1056 SLIST_REMOVE_HEAD(&bt->free_bt_ccbs, links); 1057 bt->active_ccbs++; 1058 } 1059 } 1060 splx(s); 1061 1062 return (bccb); 1063} 1064 1065static void 1066btaction(struct cam_sim *sim, union ccb *ccb) 1067{ 1068 struct bt_softc *bt; 1069 1070 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("btaction\n")); 1071 1072 bt = (struct bt_softc *)cam_sim_softc(sim); 1073 1074 switch (ccb->ccb_h.func_code) { 1075 /* Common cases first */ 1076 case XPT_SCSI_IO: /* Execute the requested I/O operation */ 1077 case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ 1078 { 1079 struct bt_ccb *bccb; 1080 struct bt_hccb *hccb; 1081 1082 /* 1083 * get a bccb to use. 1084 */ 1085 if ((bccb = btgetccb(bt)) == NULL) { 1086 int s; 1087 1088 s = splcam(); 1089 bt->resource_shortage = TRUE; 1090 splx(s); 1091 xpt_freeze_simq(bt->sim, /*count*/1); 1092 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1093 xpt_done(ccb); 1094 return; 1095 } 1096 1097 hccb = &bccb->hccb; 1098 1099 /* 1100 * So we can find the BCCB when an abort is requested 1101 */ 1102 bccb->ccb = ccb; 1103 ccb->ccb_h.ccb_bccb_ptr = bccb; 1104 ccb->ccb_h.ccb_bt_ptr = bt; 1105 1106 /* 1107 * Put all the arguments for the xfer in the bccb 1108 */ 1109 hccb->target_id = ccb->ccb_h.target_id; 1110 hccb->target_lun = ccb->ccb_h.target_lun; 1111 hccb->btstat = 0; 1112 hccb->sdstat = 0; 1113 1114 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 1115 struct ccb_scsiio *csio; 1116 struct ccb_hdr *ccbh; 1117 1118 csio = &ccb->csio; 1119 ccbh = &csio->ccb_h; 1120 hccb->opcode = INITIATOR_CCB_WRESID; 1121 hccb->datain = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0; 1122 hccb->dataout =(ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0; 1123 hccb->cmd_len = csio->cdb_len; 1124 if (hccb->cmd_len > sizeof(hccb->scsi_cdb)) { 1125 ccb->ccb_h.status = CAM_REQ_INVALID; 1126 btfreeccb(bt, bccb); 1127 xpt_done(ccb); 1128 return; 1129 } 1130 hccb->sense_len = csio->sense_len; 1131 if ((ccbh->flags & CAM_TAG_ACTION_VALID) != 0 1132 && ccb->csio.tag_action != CAM_TAG_ACTION_NONE) { 1133 hccb->tag_enable = TRUE; 1134 hccb->tag_type = (ccb->csio.tag_action & 0x3); 1135 } else { 1136 hccb->tag_enable = FALSE; 1137 hccb->tag_type = 0; 1138 } 1139 if ((ccbh->flags & CAM_CDB_POINTER) != 0) { 1140 if ((ccbh->flags & CAM_CDB_PHYS) == 0) { 1141 bcopy(csio->cdb_io.cdb_ptr, 1142 hccb->scsi_cdb, hccb->cmd_len); 1143 } else { 1144 /* I guess I could map it in... */ 1145 ccbh->status = CAM_REQ_INVALID; 1146 btfreeccb(bt, bccb); 1147 xpt_done(ccb); 1148 return; 1149 } 1150 } else { 1151 bcopy(csio->cdb_io.cdb_bytes, 1152 hccb->scsi_cdb, hccb->cmd_len); 1153 } 1154 /* If need be, bounce our sense buffer */ 1155 if (bt->sense_buffers != NULL) { 1156 hccb->sense_addr = btsensepaddr(bt, bccb); 1157 } else { 1158 hccb->sense_addr = vtophys(&csio->sense_data); 1159 } 1160 /* 1161 * If we have any data to send with this command, 1162 * map it into bus space. 1163 */ 1164 /* Only use S/G if there is a transfer */ 1165 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 1166 if ((ccbh->flags & CAM_SCATTER_VALID) == 0) { 1167 /* 1168 * We've been given a pointer 1169 * to a single buffer. 1170 */ 1171 if ((ccbh->flags & CAM_DATA_PHYS)==0) { 1172 int s; 1173 int error; 1174 1175 s = splsoftvm(); 1176 error = bus_dmamap_load( 1177 bt->buffer_dmat, 1178 bccb->dmamap, 1179 csio->data_ptr, 1180 csio->dxfer_len, 1181 btexecuteccb, 1182 bccb, 1183 /*flags*/0); 1184 if (error == EINPROGRESS) { 1185 /* 1186 * So as to maintain 1187 * ordering, freeze the 1188 * controller queue 1189 * until our mapping is 1190 * returned. 1191 */ 1192 xpt_freeze_simq(bt->sim, 1193 1); 1194 csio->ccb_h.status |= 1195 CAM_RELEASE_SIMQ; 1196 } 1197 splx(s); 1198 } else { 1199 struct bus_dma_segment seg; 1200 1201 /* Pointer to physical buffer */ 1202 seg.ds_addr = 1203 (bus_addr_t)csio->data_ptr; 1204 seg.ds_len = csio->dxfer_len; 1205 btexecuteccb(bccb, &seg, 1, 0); 1206 } 1207 } else { 1208 struct bus_dma_segment *segs; 1209 1210 if ((ccbh->flags & CAM_DATA_PHYS) != 0) 1211 panic("btaction - Physical " 1212 "segment pointers " 1213 "unsupported"); 1214 1215 if ((ccbh->flags&CAM_SG_LIST_PHYS)==0) 1216 panic("btaction - Virtual " 1217 "segment addresses " 1218 "unsupported"); 1219 1220 /* Just use the segments provided */ 1221 segs = (struct bus_dma_segment *) 1222 csio->data_ptr; 1223 btexecuteccb(bccb, segs, 1224 csio->sglist_cnt, 0); 1225 } 1226 } else { 1227 btexecuteccb(bccb, NULL, 0, 0); 1228 } 1229 } else { 1230 hccb->opcode = INITIATOR_BUS_DEV_RESET; 1231 /* No data transfer */ 1232 hccb->datain = TRUE; 1233 hccb->dataout = TRUE; 1234 hccb->cmd_len = 0; 1235 hccb->sense_len = 0; 1236 hccb->tag_enable = FALSE; 1237 hccb->tag_type = 0; 1238 btexecuteccb(bccb, NULL, 0, 0); 1239 } 1240 break; 1241 } 1242 case XPT_EN_LUN: /* Enable LUN as a target */ 1243 case XPT_TARGET_IO: /* Execute target I/O request */ 1244 case XPT_ACCEPT_TARGET_IO: /* Accept Host Target Mode CDB */ 1245 case XPT_CONT_TARGET_IO: /* Continue Host Target I/O Connection*/ 1246 case XPT_ABORT: /* Abort the specified CCB */ 1247 /* XXX Implement */ 1248 ccb->ccb_h.status = CAM_REQ_INVALID; 1249 xpt_done(ccb); 1250 break; 1251 case XPT_SET_TRAN_SETTINGS: 1252 { 1253 /* XXX Implement */ 1254 ccb->ccb_h.status = CAM_PROVIDE_FAIL; 1255 xpt_done(ccb); 1256 break; 1257 } 1258 case XPT_GET_TRAN_SETTINGS: 1259 /* Get default/user set transfer settings for the target */ 1260 { 1261 struct ccb_trans_settings *cts; 1262 u_int target_mask; 1263 1264 cts = &ccb->cts; 1265 target_mask = 0x01 << ccb->ccb_h.target_id; 1266 if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { 1267 cts->flags = 0; 1268 if ((bt->disc_permitted & target_mask) != 0) 1269 cts->flags |= CCB_TRANS_DISC_ENB; 1270 if ((bt->tags_permitted & target_mask) != 0) 1271 cts->flags |= CCB_TRANS_TAG_ENB; 1272 if ((bt->wide_permitted & target_mask) != 0) 1273 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 1274 else 1275 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 1276 if ((bt->ultra_permitted & target_mask) != 0) 1277 cts->sync_period = 12; 1278 else if ((bt->fast_permitted & target_mask) != 0) 1279 cts->sync_period = 25; 1280 else if ((bt->sync_permitted & target_mask) != 0) 1281 cts->sync_period = 50; 1282 else 1283 cts->sync_period = 0; 1284 1285 if (cts->sync_period != 0) 1286 cts->sync_offset = 15; 1287 1288 cts->valid = CCB_TRANS_SYNC_RATE_VALID 1289 | CCB_TRANS_SYNC_OFFSET_VALID 1290 | CCB_TRANS_BUS_WIDTH_VALID 1291 | CCB_TRANS_DISC_VALID 1292 | CCB_TRANS_TQ_VALID; 1293 } else { 1294 btfetchtransinfo(bt, cts); 1295 } 1296 1297 ccb->ccb_h.status = CAM_REQ_CMP; 1298 xpt_done(ccb); 1299 break; 1300 } 1301 case XPT_CALC_GEOMETRY: 1302 { 1303 struct ccb_calc_geometry *ccg; 1304 u_int32_t size_mb; 1305 u_int32_t secs_per_cylinder; 1306 1307 ccg = &ccb->ccg; 1308 size_mb = ccg->volume_size 1309 / ((1024L * 1024L) / ccg->block_size); 1310 1311 if (size_mb >= 1024 && (bt->extended_trans != 0)) { 1312 if (size_mb >= 2048) { 1313 ccg->heads = 255; 1314 ccg->secs_per_track = 63; 1315 } else { 1316 ccg->heads = 128; 1317 ccg->secs_per_track = 32; 1318 } 1319 } else { 1320 ccg->heads = 64; 1321 ccg->secs_per_track = 32; 1322 } 1323 secs_per_cylinder = ccg->heads * ccg->secs_per_track; 1324 ccg->cylinders = ccg->volume_size / secs_per_cylinder; 1325 ccb->ccb_h.status = CAM_REQ_CMP; 1326 xpt_done(ccb); 1327 break; 1328 } 1329 case XPT_RESET_BUS: /* Reset the specified SCSI bus */ 1330 { 1331 btreset(bt, /*hardreset*/TRUE); 1332 ccb->ccb_h.status = CAM_REQ_CMP; 1333 xpt_done(ccb); 1334 break; 1335 } 1336 case XPT_TERM_IO: /* Terminate the I/O process */ 1337 /* XXX Implement */ 1338 ccb->ccb_h.status = CAM_REQ_INVALID; 1339 xpt_done(ccb); 1340 break; 1341 case XPT_PATH_INQ: /* Path routing inquiry */ 1342 { 1343 struct ccb_pathinq *cpi = &ccb->cpi; 1344 1345 cpi->version_num = 1; /* XXX??? */ 1346 cpi->hba_inquiry = PI_SDTR_ABLE; 1347 if (bt->tag_capable != 0) 1348 cpi->hba_inquiry |= PI_TAG_ABLE; 1349 if (bt->wide_bus != 0) 1350 cpi->hba_inquiry |= PI_WIDE_16; 1351 cpi->target_sprt = 0; 1352 cpi->hba_misc = 0; 1353 cpi->hba_eng_cnt = 0; 1354 cpi->max_target = bt->wide_bus ? 15 : 7; 1355 cpi->max_lun = 7; 1356 cpi->initiator_id = bt->scsi_id; 1357 cpi->bus_id = cam_sim_bus(sim); 1358 cpi->base_transfer_speed = 3300; 1359 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 1360 strncpy(cpi->hba_vid, "BusLogic", HBA_IDLEN); 1361 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 1362 cpi->unit_number = cam_sim_unit(sim); 1363 cpi->ccb_h.status = CAM_REQ_CMP; 1364 xpt_done(ccb); 1365 break; 1366 } 1367 default: 1368 ccb->ccb_h.status = CAM_REQ_INVALID; 1369 xpt_done(ccb); 1370 break; 1371 } 1372} 1373 1374static void 1375btexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) 1376{ 1377 struct bt_ccb *bccb; 1378 union ccb *ccb; 1379 struct bt_softc *bt; 1380 int s; 1381 1382 bccb = (struct bt_ccb *)arg; 1383 ccb = bccb->ccb; 1384 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr; 1385 1386 if (error != 0) { 1387 if (error != EFBIG) 1388 device_printf(bt->dev, 1389 "Unexepected error 0x%x returned from " 1390 "bus_dmamap_load\n", error); 1391 if (ccb->ccb_h.status == CAM_REQ_INPROG) { 1392 xpt_freeze_devq(ccb->ccb_h.path, /*count*/1); 1393 ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN; 1394 } 1395 btfreeccb(bt, bccb); 1396 xpt_done(ccb); 1397 return; 1398 } 1399 1400 if (nseg != 0) { 1401 bt_sg_t *sg; 1402 bus_dma_segment_t *end_seg; 1403 bus_dmasync_op_t op; 1404 1405 end_seg = dm_segs + nseg; 1406 1407 /* Copy the segments into our SG list */ 1408 sg = bccb->sg_list; 1409 while (dm_segs < end_seg) { 1410 sg->len = dm_segs->ds_len; 1411 sg->addr = dm_segs->ds_addr; 1412 sg++; 1413 dm_segs++; 1414 } 1415 1416 if (nseg > 1) { 1417 bccb->hccb.opcode = INITIATOR_SG_CCB_WRESID; 1418 bccb->hccb.data_len = sizeof(bt_sg_t) * nseg; 1419 bccb->hccb.data_addr = bccb->sg_list_phys; 1420 } else { 1421 bccb->hccb.data_len = bccb->sg_list->len; 1422 bccb->hccb.data_addr = bccb->sg_list->addr; 1423 } 1424 1425 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) 1426 op = BUS_DMASYNC_PREREAD; 1427 else 1428 op = BUS_DMASYNC_PREWRITE; 1429 1430 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op); 1431 1432 } else { 1433 bccb->hccb.opcode = INITIATOR_CCB; 1434 bccb->hccb.data_len = 0; 1435 bccb->hccb.data_addr = 0; 1436 } 1437 1438 s = splcam(); 1439 1440 /* 1441 * Last time we need to check if this CCB needs to 1442 * be aborted. 1443 */ 1444 if (ccb->ccb_h.status != CAM_REQ_INPROG) { 1445 if (nseg != 0) 1446 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); 1447 btfreeccb(bt, bccb); 1448 xpt_done(ccb); 1449 splx(s); 1450 return; 1451 } 1452 1453 bccb->flags = BCCB_ACTIVE; 1454 ccb->ccb_h.status |= CAM_SIM_QUEUED; 1455 LIST_INSERT_HEAD(&bt->pending_ccbs, &ccb->ccb_h, sim_links.le); 1456 1457 ccb->ccb_h.timeout_ch = 1458 timeout(bttimeout, (caddr_t)bccb, 1459 (ccb->ccb_h.timeout * hz) / 1000); 1460 1461 /* Tell the adapter about this command */ 1462 bt->cur_outbox->ccb_addr = btccbvtop(bt, bccb); 1463 if (bt->cur_outbox->action_code != BMBO_FREE) { 1464 /* 1465 * We should never encounter a busy mailbox. 1466 * If we do, warn the user, and treat it as 1467 * a resource shortage. If the controller is 1468 * hung, one of the pending transactions will 1469 * timeout causing us to start recovery operations. 1470 */ 1471 device_printf(bt->dev, 1472 "Encountered busy mailbox with %d out of %d " 1473 "commands active!!!\n", bt->active_ccbs, 1474 bt->max_ccbs); 1475 untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch); 1476 if (nseg != 0) 1477 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); 1478 btfreeccb(bt, bccb); 1479 bt->resource_shortage = TRUE; 1480 xpt_freeze_simq(bt->sim, /*count*/1); 1481 ccb->ccb_h.status = CAM_REQUEUE_REQ; 1482 xpt_done(ccb); 1483 return; 1484 } 1485 bt->cur_outbox->action_code = BMBO_START; 1486 bt_outb(bt, COMMAND_REG, BOP_START_MBOX); 1487 btnextoutbox(bt); 1488 splx(s); 1489} 1490 1491void 1492bt_intr(void *arg) 1493{ 1494 struct bt_softc *bt; 1495 u_int intstat; 1496 1497 bt = (struct bt_softc *)arg; 1498 while (((intstat = bt_inb(bt, INTSTAT_REG)) & INTR_PENDING) != 0) { 1499 1500 if ((intstat & CMD_COMPLETE) != 0) { 1501 bt->latched_status = bt_inb(bt, STATUS_REG); 1502 bt->command_cmp = TRUE; 1503 } 1504 1505 bt_outb(bt, CONTROL_REG, RESET_INTR); 1506 1507 if ((intstat & IMB_LOADED) != 0) { 1508 while (bt->cur_inbox->comp_code != BMBI_FREE) { 1509 btdone(bt, 1510 btccbptov(bt, bt->cur_inbox->ccb_addr), 1511 bt->cur_inbox->comp_code); 1512 bt->cur_inbox->comp_code = BMBI_FREE; 1513 btnextinbox(bt); 1514 } 1515 } 1516 1517 if ((intstat & SCSI_BUS_RESET) != 0) { 1518 btreset(bt, /*hardreset*/FALSE); 1519 } 1520 } 1521} 1522 1523static void 1524btdone(struct bt_softc *bt, struct bt_ccb *bccb, bt_mbi_comp_code_t comp_code) 1525{ 1526 union ccb *ccb; 1527 struct ccb_scsiio *csio; 1528 1529 ccb = bccb->ccb; 1530 csio = &bccb->ccb->csio; 1531 1532 if ((bccb->flags & BCCB_ACTIVE) == 0) { 1533 device_printf(bt->dev, 1534 "btdone - Attempt to free non-active BCCB %p\n", 1535 (void *)bccb); 1536 return; 1537 } 1538 1539 if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { 1540 bus_dmasync_op_t op; 1541 1542 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) 1543 op = BUS_DMASYNC_POSTREAD; 1544 else 1545 op = BUS_DMASYNC_POSTWRITE; 1546 bus_dmamap_sync(bt->buffer_dmat, bccb->dmamap, op); 1547 bus_dmamap_unload(bt->buffer_dmat, bccb->dmamap); 1548 } 1549 1550 if (bccb == bt->recovery_bccb) { 1551 /* 1552 * The recovery BCCB does not have a CCB associated 1553 * with it, so short circuit the normal error handling. 1554 * We now traverse our list of pending CCBs and process 1555 * any that were terminated by the recovery CCBs action. 1556 * We also reinstate timeouts for all remaining, pending, 1557 * CCBs. 1558 */ 1559 struct cam_path *path; 1560 struct ccb_hdr *ccb_h; 1561 cam_status error; 1562 1563 /* Notify all clients that a BDR occured */ 1564 error = xpt_create_path(&path, /*periph*/NULL, 1565 cam_sim_path(bt->sim), 1566 bccb->hccb.target_id, 1567 CAM_LUN_WILDCARD); 1568 1569 if (error == CAM_REQ_CMP) 1570 xpt_async(AC_SENT_BDR, path, NULL); 1571 1572 ccb_h = LIST_FIRST(&bt->pending_ccbs); 1573 while (ccb_h != NULL) { 1574 struct bt_ccb *pending_bccb; 1575 1576 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; 1577 if (pending_bccb->hccb.target_id 1578 == bccb->hccb.target_id) { 1579 pending_bccb->hccb.btstat = BTSTAT_HA_BDR; 1580 ccb_h = LIST_NEXT(ccb_h, sim_links.le); 1581 btdone(bt, pending_bccb, BMBI_ERROR); 1582 } else { 1583 ccb_h->timeout_ch = 1584 timeout(bttimeout, (caddr_t)pending_bccb, 1585 (ccb_h->timeout * hz) / 1000); 1586 ccb_h = LIST_NEXT(ccb_h, sim_links.le); 1587 } 1588 } 1589 device_printf(bt->dev, "No longer in timeout\n"); 1590 return; 1591 } 1592 1593 untimeout(bttimeout, bccb, ccb->ccb_h.timeout_ch); 1594 1595 switch (comp_code) { 1596 case BMBI_FREE: 1597 device_printf(bt->dev, 1598 "btdone - CCB completed with free status!\n"); 1599 break; 1600 case BMBI_NOT_FOUND: 1601 device_printf(bt->dev, 1602 "btdone - CCB Abort failed to find CCB\n"); 1603 break; 1604 case BMBI_ABORT: 1605 case BMBI_ERROR: 1606 if (bootverbose) { 1607 printf("bt: ccb %p - error %x occured. " 1608 "btstat = %x, sdstat = %x\n", 1609 (void *)bccb, comp_code, bccb->hccb.btstat, 1610 bccb->hccb.sdstat); 1611 } 1612 /* An error occured */ 1613 switch(bccb->hccb.btstat) { 1614 case BTSTAT_DATARUN_ERROR: 1615 if (bccb->hccb.data_len == 0) { 1616 /* 1617 * At least firmware 4.22, does this 1618 * for a QUEUE FULL condition. 1619 */ 1620 bccb->hccb.sdstat = SCSI_STATUS_QUEUE_FULL; 1621 } else if (bccb->hccb.data_len < 0) { 1622 csio->ccb_h.status = CAM_DATA_RUN_ERR; 1623 break; 1624 } 1625 /* FALLTHROUGH */ 1626 case BTSTAT_NOERROR: 1627 case BTSTAT_LINKED_CMD_COMPLETE: 1628 case BTSTAT_LINKED_CMD_FLAG_COMPLETE: 1629 case BTSTAT_DATAUNDERUN_ERROR: 1630 1631 csio->scsi_status = bccb->hccb.sdstat; 1632 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR; 1633 switch(csio->scsi_status) { 1634 case SCSI_STATUS_CHECK_COND: 1635 case SCSI_STATUS_CMD_TERMINATED: 1636 csio->ccb_h.status |= CAM_AUTOSNS_VALID; 1637 /* Bounce sense back if necessary */ 1638 if (bt->sense_buffers != NULL) { 1639 csio->sense_data = 1640 *btsensevaddr(bt, bccb); 1641 } 1642 break; 1643 default: 1644 break; 1645 case SCSI_STATUS_OK: 1646 csio->ccb_h.status = CAM_REQ_CMP; 1647 break; 1648 } 1649 csio->resid = bccb->hccb.data_len; 1650 break; 1651 case BTSTAT_SELTIMEOUT: 1652 csio->ccb_h.status = CAM_SEL_TIMEOUT; 1653 break; 1654 case BTSTAT_UNEXPECTED_BUSFREE: 1655 csio->ccb_h.status = CAM_UNEXP_BUSFREE; 1656 break; 1657 case BTSTAT_INVALID_PHASE: 1658 csio->ccb_h.status = CAM_SEQUENCE_FAIL; 1659 break; 1660 case BTSTAT_INVALID_ACTION_CODE: 1661 panic("%s: Inavlid Action code", bt_name(bt)); 1662 break; 1663 case BTSTAT_INVALID_OPCODE: 1664 panic("%s: Inavlid CCB Opcode code", bt_name(bt)); 1665 break; 1666 case BTSTAT_LINKED_CCB_LUN_MISMATCH: 1667 /* We don't even support linked commands... */ 1668 panic("%s: Linked CCB Lun Mismatch", bt_name(bt)); 1669 break; 1670 case BTSTAT_INVALID_CCB_OR_SG_PARAM: 1671 panic("%s: Invalid CCB or SG list", bt_name(bt)); 1672 break; 1673 case BTSTAT_AUTOSENSE_FAILED: 1674 csio->ccb_h.status = CAM_AUTOSENSE_FAIL; 1675 break; 1676 case BTSTAT_TAGGED_MSG_REJECTED: 1677 { 1678 struct ccb_trans_settings neg; 1679 1680 xpt_print_path(csio->ccb_h.path); 1681 printf("refuses tagged commands. Performing " 1682 "non-tagged I/O\n"); 1683 neg.flags = 0; 1684 neg.valid = CCB_TRANS_TQ_VALID; 1685 xpt_setup_ccb(&neg.ccb_h, csio->ccb_h.path, 1686 /*priority*/1); 1687 xpt_async(AC_TRANSFER_NEG, csio->ccb_h.path, &neg); 1688 bt->tags_permitted &= ~(0x01 << csio->ccb_h.target_id); 1689 csio->ccb_h.status = CAM_MSG_REJECT_REC; 1690 break; 1691 } 1692 case BTSTAT_UNSUPPORTED_MSG_RECEIVED: 1693 /* 1694 * XXX You would think that this is 1695 * a recoverable error... Hmmm. 1696 */ 1697 csio->ccb_h.status = CAM_REQ_CMP_ERR; 1698 break; 1699 case BTSTAT_HA_SOFTWARE_ERROR: 1700 case BTSTAT_HA_WATCHDOG_ERROR: 1701 case BTSTAT_HARDWARE_FAILURE: 1702 /* Hardware reset ??? Can we recover ??? */ 1703 csio->ccb_h.status = CAM_NO_HBA; 1704 break; 1705 case BTSTAT_TARGET_IGNORED_ATN: 1706 case BTSTAT_OTHER_SCSI_BUS_RESET: 1707 case BTSTAT_HA_SCSI_BUS_RESET: 1708 if ((csio->ccb_h.status & CAM_STATUS_MASK) 1709 != CAM_CMD_TIMEOUT) 1710 csio->ccb_h.status = CAM_SCSI_BUS_RESET; 1711 break; 1712 case BTSTAT_HA_BDR: 1713 if ((bccb->flags & BCCB_DEVICE_RESET) == 0) 1714 csio->ccb_h.status = CAM_BDR_SENT; 1715 else 1716 csio->ccb_h.status = CAM_CMD_TIMEOUT; 1717 break; 1718 case BTSTAT_INVALID_RECONNECT: 1719 case BTSTAT_ABORT_QUEUE_GENERATED: 1720 csio->ccb_h.status = CAM_REQ_TERMIO; 1721 break; 1722 case BTSTAT_SCSI_PERROR_DETECTED: 1723 csio->ccb_h.status = CAM_UNCOR_PARITY; 1724 break; 1725 } 1726 if (csio->ccb_h.status != CAM_REQ_CMP) { 1727 xpt_freeze_devq(csio->ccb_h.path, /*count*/1); 1728 csio->ccb_h.status |= CAM_DEV_QFRZN; 1729 } 1730 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0) 1731 ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 1732 btfreeccb(bt, bccb); 1733 xpt_done(ccb); 1734 break; 1735 case BMBI_OK: 1736 /* All completed without incident */ 1737 ccb->ccb_h.status |= CAM_REQ_CMP; 1738 if ((bccb->flags & BCCB_RELEASE_SIMQ) != 0) 1739 ccb->ccb_h.status |= CAM_RELEASE_SIMQ; 1740 btfreeccb(bt, bccb); 1741 xpt_done(ccb); 1742 break; 1743 } 1744} 1745 1746static int 1747btreset(struct bt_softc* bt, int hard_reset) 1748{ 1749 struct ccb_hdr *ccb_h; 1750 u_int status; 1751 u_int timeout; 1752 u_int8_t reset_type; 1753 1754 if (hard_reset != 0) 1755 reset_type = HARD_RESET; 1756 else 1757 reset_type = SOFT_RESET; 1758 bt_outb(bt, CONTROL_REG, reset_type); 1759 1760 /* Wait 5sec. for Diagnostic start */ 1761 timeout = 5 * 10000; 1762 while (--timeout) { 1763 status = bt_inb(bt, STATUS_REG); 1764 if ((status & DIAG_ACTIVE) != 0) 1765 break; 1766 DELAY(100); 1767 } 1768 if (timeout == 0) { 1769 if (bootverbose) 1770 printf("%s: btreset - Diagnostic Active failed to " 1771 "assert. status = 0x%x\n", bt_name(bt), status); 1772 return (ETIMEDOUT); 1773 } 1774 1775 /* Wait 10sec. for Diagnostic end */ 1776 timeout = 10 * 10000; 1777 while (--timeout) { 1778 status = bt_inb(bt, STATUS_REG); 1779 if ((status & DIAG_ACTIVE) == 0) 1780 break; 1781 DELAY(100); 1782 } 1783 if (timeout == 0) { 1784 panic("%s: btreset - Diagnostic Active failed to drop. " 1785 "status = 0x%x\n", bt_name(bt), status); 1786 return (ETIMEDOUT); 1787 } 1788 1789 /* Wait for the host adapter to become ready or report a failure */ 1790 timeout = 10000; 1791 while (--timeout) { 1792 status = bt_inb(bt, STATUS_REG); 1793 if ((status & (DIAG_FAIL|HA_READY|DATAIN_REG_READY)) != 0) 1794 break; 1795 DELAY(100); 1796 } 1797 if (timeout == 0) { 1798 printf("%s: btreset - Host adapter failed to come ready. " 1799 "status = 0x%x\n", bt_name(bt), status); 1800 return (ETIMEDOUT); 1801 } 1802 1803 /* If the diagnostics failed, tell the user */ 1804 if ((status & DIAG_FAIL) != 0 1805 || (status & HA_READY) == 0) { 1806 printf("%s: btreset - Adapter failed diagnostics\n", 1807 bt_name(bt)); 1808 1809 if ((status & DATAIN_REG_READY) != 0) 1810 printf("%s: btreset - Host Adapter Error code = 0x%x\n", 1811 bt_name(bt), bt_inb(bt, DATAIN_REG)); 1812 return (ENXIO); 1813 } 1814 1815 /* If we've allocated mailboxes, initialize them */ 1816 if (bt->init_level > 4) 1817 btinitmboxes(bt); 1818 1819 /* If we've attached to the XPT, tell it about the event */ 1820 if (bt->path != NULL) 1821 xpt_async(AC_BUS_RESET, bt->path, NULL); 1822 1823 /* 1824 * Perform completion processing for all outstanding CCBs. 1825 */ 1826 while ((ccb_h = LIST_FIRST(&bt->pending_ccbs)) != NULL) { 1827 struct bt_ccb *pending_bccb; 1828 1829 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; 1830 pending_bccb->hccb.btstat = BTSTAT_HA_SCSI_BUS_RESET; 1831 btdone(bt, pending_bccb, BMBI_ERROR); 1832 } 1833 1834 return (0); 1835} 1836 1837/* 1838 * Send a command to the adapter. 1839 */ 1840int 1841bt_cmd(struct bt_softc *bt, bt_op_t opcode, u_int8_t *params, u_int param_len, 1842 u_int8_t *reply_data, u_int reply_len, u_int cmd_timeout) 1843{ 1844 u_int timeout; 1845 u_int status; 1846 u_int saved_status; 1847 u_int intstat; 1848 u_int reply_buf_size; 1849 int s; 1850 int cmd_complete; 1851 int error; 1852 1853 /* No data returned to start */ 1854 reply_buf_size = reply_len; 1855 reply_len = 0; 1856 intstat = 0; 1857 cmd_complete = 0; 1858 saved_status = 0; 1859 error = 0; 1860 1861 bt->command_cmp = 0; 1862 /* 1863 * Wait up to 10 sec. for the adapter to become 1864 * ready to accept commands. 1865 */ 1866 timeout = 100000; 1867 while (--timeout) { 1868 status = bt_inb(bt, STATUS_REG); 1869 if ((status & HA_READY) != 0 1870 && (status & CMD_REG_BUSY) == 0) 1871 break; 1872 /* 1873 * Throw away any pending data which may be 1874 * left over from earlier commands that we 1875 * timedout on. 1876 */ 1877 if ((status & DATAIN_REG_READY) != 0) 1878 (void)bt_inb(bt, DATAIN_REG); 1879 DELAY(100); 1880 } 1881 if (timeout == 0) { 1882 printf("%s: bt_cmd: Timeout waiting for adapter ready, " 1883 "status = 0x%x\n", bt_name(bt), status); 1884 return (ETIMEDOUT); 1885 } 1886 1887 /* 1888 * Send the opcode followed by any necessary parameter bytes. 1889 */ 1890 bt_outb(bt, COMMAND_REG, opcode); 1891 1892 /* 1893 * Wait for up to 1sec for each byte of the the 1894 * parameter list sent to be sent. 1895 */ 1896 timeout = 10000; 1897 while (param_len && --timeout) { 1898 DELAY(100); 1899 s = splcam(); 1900 status = bt_inb(bt, STATUS_REG); 1901 intstat = bt_inb(bt, INTSTAT_REG); 1902 splx(s); 1903 1904 if ((intstat & (INTR_PENDING|CMD_COMPLETE)) 1905 == (INTR_PENDING|CMD_COMPLETE)) { 1906 saved_status = status; 1907 cmd_complete = 1; 1908 break; 1909 } 1910 if (bt->command_cmp != 0) { 1911 saved_status = bt->latched_status; 1912 cmd_complete = 1; 1913 break; 1914 } 1915 if ((status & DATAIN_REG_READY) != 0) 1916 break; 1917 if ((status & CMD_REG_BUSY) == 0) { 1918 bt_outb(bt, COMMAND_REG, *params++); 1919 param_len--; 1920 timeout = 10000; 1921 } 1922 } 1923 if (timeout == 0) { 1924 printf("%s: bt_cmd: Timeout sending parameters, " 1925 "status = 0x%x\n", bt_name(bt), status); 1926 cmd_complete = 1; 1927 saved_status = status; 1928 error = ETIMEDOUT; 1929 } 1930 1931 /* 1932 * Wait for the command to complete. 1933 */ 1934 while (cmd_complete == 0 && --cmd_timeout) { 1935 1936 s = splcam(); 1937 status = bt_inb(bt, STATUS_REG); 1938 intstat = bt_inb(bt, INTSTAT_REG); 1939 /* 1940 * It may be that this command was issued with 1941 * controller interrupts disabled. We'll never 1942 * get to our command if an incoming mailbox 1943 * interrupt is pending, so take care of completed 1944 * mailbox commands by calling our interrupt handler. 1945 */ 1946 if ((intstat & (INTR_PENDING|IMB_LOADED)) 1947 == (INTR_PENDING|IMB_LOADED)) 1948 bt_intr(bt); 1949 splx(s); 1950 1951 if (bt->command_cmp != 0) { 1952 /* 1953 * Our interrupt handler saw CMD_COMPLETE 1954 * status before we did. 1955 */ 1956 cmd_complete = 1; 1957 saved_status = bt->latched_status; 1958 } else if ((intstat & (INTR_PENDING|CMD_COMPLETE)) 1959 == (INTR_PENDING|CMD_COMPLETE)) { 1960 /* 1961 * Our poll (in case interrupts are blocked) 1962 * saw the CMD_COMPLETE interrupt. 1963 */ 1964 cmd_complete = 1; 1965 saved_status = status; 1966 } else if (opcode == BOP_MODIFY_IO_ADDR 1967 && (status & CMD_REG_BUSY) == 0) { 1968 /* 1969 * The BOP_MODIFY_IO_ADDR does not issue a CMD_COMPLETE, 1970 * but it should update the status register. So, we 1971 * consider this command complete when the CMD_REG_BUSY 1972 * status clears. 1973 */ 1974 saved_status = status; 1975 cmd_complete = 1; 1976 } else if ((status & DATAIN_REG_READY) != 0) { 1977 u_int8_t data; 1978 1979 data = bt_inb(bt, DATAIN_REG); 1980 if (reply_len < reply_buf_size) { 1981 *reply_data++ = data; 1982 } else { 1983 printf("%s: bt_cmd - Discarded reply data byte " 1984 "for opcode 0x%x\n", bt_name(bt), 1985 opcode); 1986 } 1987 /* 1988 * Reset timeout to ensure at least a second 1989 * between response bytes. 1990 */ 1991 cmd_timeout = MAX(cmd_timeout, 10000); 1992 reply_len++; 1993 1994 } else if ((opcode == BOP_FETCH_LRAM) 1995 && (status & HA_READY) != 0) { 1996 saved_status = status; 1997 cmd_complete = 1; 1998 } 1999 DELAY(100); 2000 } 2001 if (cmd_timeout == 0) { 2002 printf("%s: bt_cmd: Timeout waiting for command (%x) " 2003 "to complete.\n%s: status = 0x%x, intstat = 0x%x, " 2004 "rlen %d\n", bt_name(bt), opcode, 2005 bt_name(bt), status, intstat, reply_len); 2006 error = (ETIMEDOUT); 2007 } 2008 2009 /* 2010 * Clear any pending interrupts. Block interrupts so our 2011 * interrupt handler is not re-entered. 2012 */ 2013 s = splcam(); 2014 bt_intr(bt); 2015 splx(s); 2016 2017 if (error != 0) 2018 return (error); 2019 2020 /* 2021 * If the command was rejected by the controller, tell the caller. 2022 */ 2023 if ((saved_status & CMD_INVALID) != 0) { 2024 /* 2025 * Some early adapters may not recover properly from 2026 * an invalid command. If it appears that the controller 2027 * has wedged (i.e. status was not cleared by our interrupt 2028 * reset above), perform a soft reset. 2029 */ 2030 if (bootverbose) 2031 printf("%s: Invalid Command 0x%x\n", bt_name(bt), 2032 opcode); 2033 DELAY(1000); 2034 status = bt_inb(bt, STATUS_REG); 2035 if ((status & (CMD_INVALID|STATUS_REG_RSVD|DATAIN_REG_READY| 2036 CMD_REG_BUSY|DIAG_FAIL|DIAG_ACTIVE)) != 0 2037 || (status & (HA_READY|INIT_REQUIRED)) 2038 != (HA_READY|INIT_REQUIRED)) { 2039 btreset(bt, /*hard_reset*/FALSE); 2040 } 2041 return (EINVAL); 2042 } 2043 2044 if (param_len > 0) { 2045 /* The controller did not accept the full argument list */ 2046 return (E2BIG); 2047 } 2048 2049 if (reply_len != reply_buf_size) { 2050 /* Too much or too little data received */ 2051 return (EMSGSIZE); 2052 } 2053 2054 /* We were successful */ 2055 return (0); 2056} 2057 2058static int 2059btinitmboxes(struct bt_softc *bt) { 2060 init_32b_mbox_params_t init_mbox; 2061 int error; 2062 2063 bzero(bt->in_boxes, sizeof(bt_mbox_in_t) * bt->num_boxes); 2064 bzero(bt->out_boxes, sizeof(bt_mbox_out_t) * bt->num_boxes); 2065 bt->cur_inbox = bt->in_boxes; 2066 bt->last_inbox = bt->in_boxes + bt->num_boxes - 1; 2067 bt->cur_outbox = bt->out_boxes; 2068 bt->last_outbox = bt->out_boxes + bt->num_boxes - 1; 2069 2070 /* Tell the adapter about them */ 2071 init_mbox.num_boxes = bt->num_boxes; 2072 init_mbox.base_addr[0] = bt->mailbox_physbase & 0xFF; 2073 init_mbox.base_addr[1] = (bt->mailbox_physbase >> 8) & 0xFF; 2074 init_mbox.base_addr[2] = (bt->mailbox_physbase >> 16) & 0xFF; 2075 init_mbox.base_addr[3] = (bt->mailbox_physbase >> 24) & 0xFF; 2076 error = bt_cmd(bt, BOP_INITIALIZE_32BMBOX, (u_int8_t *)&init_mbox, 2077 /*parmlen*/sizeof(init_mbox), /*reply_buf*/NULL, 2078 /*reply_len*/0, DEFAULT_CMD_TIMEOUT); 2079 2080 if (error != 0) 2081 printf("btinitmboxes: Initialization command failed\n"); 2082 else if (bt->strict_rr != 0) { 2083 /* 2084 * If the controller supports 2085 * strict round robin mode, 2086 * enable it 2087 */ 2088 u_int8_t param; 2089 2090 param = 0; 2091 error = bt_cmd(bt, BOP_ENABLE_STRICT_RR, ¶m, 1, 2092 /*reply_buf*/NULL, /*reply_len*/0, 2093 DEFAULT_CMD_TIMEOUT); 2094 2095 if (error != 0) { 2096 printf("btinitmboxes: Unable to enable strict RR\n"); 2097 error = 0; 2098 } else if (bootverbose) { 2099 printf("%s: Using Strict Round Robin Mailbox Mode\n", 2100 bt_name(bt)); 2101 } 2102 } 2103 2104 return (error); 2105} 2106 2107/* 2108 * Update the XPT's idea of the negotiated transfer 2109 * parameters for a particular target. 2110 */ 2111static void 2112btfetchtransinfo(struct bt_softc *bt, struct ccb_trans_settings* cts) 2113{ 2114 setup_data_t setup_info; 2115 u_int target; 2116 u_int targ_offset; 2117 u_int targ_mask; 2118 u_int sync_period; 2119 int error; 2120 u_int8_t param; 2121 targ_syncinfo_t sync_info; 2122 2123 target = cts->ccb_h.target_id; 2124 targ_offset = (target & 0x7); 2125 targ_mask = (0x01 << targ_offset); 2126 2127 /* 2128 * Inquire Setup Information. This command retreives the 2129 * Wide negotiation status for recent adapters as well as 2130 * the sync info for older models. 2131 */ 2132 param = sizeof(setup_info); 2133 error = bt_cmd(bt, BOP_INQUIRE_SETUP_INFO, ¶m, /*paramlen*/1, 2134 (u_int8_t*)&setup_info, sizeof(setup_info), 2135 DEFAULT_CMD_TIMEOUT); 2136 2137 if (error != 0) { 2138 printf("%s: btfetchtransinfo - Inquire Setup Info Failed %x\n", 2139 bt_name(bt), error); 2140 cts->valid = 0; 2141 return; 2142 } 2143 2144 sync_info = (target < 8) ? setup_info.low_syncinfo[targ_offset] 2145 : setup_info.high_syncinfo[targ_offset]; 2146 2147 if (sync_info.sync == 0) 2148 cts->sync_offset = 0; 2149 else 2150 cts->sync_offset = sync_info.offset; 2151 2152 cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT; 2153 if (strcmp(bt->firmware_ver, "5.06L") >= 0) { 2154 u_int wide_active; 2155 2156 wide_active = 2157 (target < 8) ? (setup_info.low_wide_active & targ_mask) 2158 : (setup_info.high_wide_active & targ_mask); 2159 2160 if (wide_active) 2161 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2162 } else if ((bt->wide_permitted & targ_mask) != 0) { 2163 struct ccb_getdev cgd; 2164 2165 /* 2166 * Prior to rev 5.06L, wide status isn't provided, 2167 * so we "guess" that wide transfers are in effect 2168 * if the user settings allow for wide and the inquiry 2169 * data for the device indicates that it can handle 2170 * wide transfers. 2171 */ 2172 xpt_setup_ccb(&cgd.ccb_h, cts->ccb_h.path, /*priority*/1); 2173 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 2174 xpt_action((union ccb *)&cgd); 2175 if ((cgd.ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP 2176 && (cgd.inq_data.flags & SID_WBus16) != 0) 2177 cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT; 2178 } 2179 2180 if (bt->firmware_ver[0] >= '3') { 2181 /* 2182 * For adapters that can do fast or ultra speeds, 2183 * use the more exact Target Sync Information command. 2184 */ 2185 target_sync_info_data_t sync_info; 2186 2187 param = sizeof(sync_info); 2188 error = bt_cmd(bt, BOP_TARG_SYNC_INFO, ¶m, /*paramlen*/1, 2189 (u_int8_t*)&sync_info, sizeof(sync_info), 2190 DEFAULT_CMD_TIMEOUT); 2191 2192 if (error != 0) { 2193 printf("%s: btfetchtransinfo - Inquire Sync " 2194 "Info Failed 0x%x\n", bt_name(bt), error); 2195 cts->valid = 0; 2196 return; 2197 } 2198 sync_period = sync_info.sync_rate[target] * 100; 2199 } else { 2200 sync_period = 2000 + (500 * sync_info.period); 2201 } 2202 2203 /* Convert ns value to standard SCSI sync rate */ 2204 if (cts->sync_offset != 0) 2205 cts->sync_period = scsi_calc_syncparam(sync_period); 2206 else 2207 cts->sync_period = 0; 2208 2209 cts->valid = CCB_TRANS_SYNC_RATE_VALID 2210 | CCB_TRANS_SYNC_OFFSET_VALID 2211 | CCB_TRANS_BUS_WIDTH_VALID; 2212 xpt_async(AC_TRANSFER_NEG, cts->ccb_h.path, cts); 2213} 2214 2215static void 2216btmapmboxes(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2217{ 2218 struct bt_softc* bt; 2219 2220 bt = (struct bt_softc*)arg; 2221 bt->mailbox_physbase = segs->ds_addr; 2222} 2223 2224static void 2225btmapccbs(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2226{ 2227 struct bt_softc* bt; 2228 2229 bt = (struct bt_softc*)arg; 2230 bt->bt_ccb_physbase = segs->ds_addr; 2231} 2232 2233static void 2234btmapsgs(void *arg, bus_dma_segment_t *segs, int nseg, int error) 2235{ 2236 2237 struct bt_softc* bt; 2238 2239 bt = (struct bt_softc*)arg; 2240 SLIST_FIRST(&bt->sg_maps)->sg_physaddr = segs->ds_addr; 2241} 2242 2243static void 2244btpoll(struct cam_sim *sim) 2245{ 2246 bt_intr(cam_sim_softc(sim)); 2247} 2248 2249void 2250bttimeout(void *arg) 2251{ 2252 struct bt_ccb *bccb; 2253 union ccb *ccb; 2254 struct bt_softc *bt; 2255 int s; 2256 2257 bccb = (struct bt_ccb *)arg; 2258 ccb = bccb->ccb; 2259 bt = (struct bt_softc *)ccb->ccb_h.ccb_bt_ptr; 2260 xpt_print_path(ccb->ccb_h.path); 2261 printf("CCB %p - timed out\n", (void *)bccb); 2262 2263 s = splcam(); 2264 2265 if ((bccb->flags & BCCB_ACTIVE) == 0) { 2266 xpt_print_path(ccb->ccb_h.path); 2267 printf("CCB %p - timed out CCB already completed\n", 2268 (void *)bccb); 2269 splx(s); 2270 return; 2271 } 2272 2273 /* 2274 * In order to simplify the recovery process, we ask the XPT 2275 * layer to halt the queue of new transactions and we traverse 2276 * the list of pending CCBs and remove their timeouts. This 2277 * means that the driver attempts to clear only one error 2278 * condition at a time. In general, timeouts that occur 2279 * close together are related anyway, so there is no benefit 2280 * in attempting to handle errors in parrallel. Timeouts will 2281 * be reinstated when the recovery process ends. 2282 */ 2283 if ((bccb->flags & BCCB_DEVICE_RESET) == 0) { 2284 struct ccb_hdr *ccb_h; 2285 2286 if ((bccb->flags & BCCB_RELEASE_SIMQ) == 0) { 2287 xpt_freeze_simq(bt->sim, /*count*/1); 2288 bccb->flags |= BCCB_RELEASE_SIMQ; 2289 } 2290 2291 ccb_h = LIST_FIRST(&bt->pending_ccbs); 2292 while (ccb_h != NULL) { 2293 struct bt_ccb *pending_bccb; 2294 2295 pending_bccb = (struct bt_ccb *)ccb_h->ccb_bccb_ptr; 2296 untimeout(bttimeout, pending_bccb, ccb_h->timeout_ch); 2297 ccb_h = LIST_NEXT(ccb_h, sim_links.le); 2298 } 2299 } 2300 2301 if ((bccb->flags & BCCB_DEVICE_RESET) != 0 2302 || bt->cur_outbox->action_code != BMBO_FREE 2303 || ((bccb->hccb.tag_enable == TRUE) 2304 && (bt->firmware_ver[0] < '5'))) { 2305 /* 2306 * Try a full host adapter/SCSI bus reset. 2307 * We do this only if we have already attempted 2308 * to clear the condition with a BDR, or we cannot 2309 * attempt a BDR for lack of mailbox resources 2310 * or because of faulty firmware. It turns out 2311 * that firmware versions prior to 5.xx treat BDRs 2312 * as untagged commands that cannot be sent until 2313 * all outstanding tagged commands have been processed. 2314 * This makes it somewhat difficult to use a BDR to 2315 * clear up a problem with an uncompleted tagged command. 2316 */ 2317 ccb->ccb_h.status = CAM_CMD_TIMEOUT; 2318 btreset(bt, /*hardreset*/TRUE); 2319 printf("%s: No longer in timeout\n", bt_name(bt)); 2320 } else { 2321 /* 2322 * Send a Bus Device Reset message: 2323 * The target that is holding up the bus may not 2324 * be the same as the one that triggered this timeout 2325 * (different commands have different timeout lengths), 2326 * but we have no way of determining this from our 2327 * timeout handler. Our strategy here is to queue a 2328 * BDR message to the target of the timed out command. 2329 * If this fails, we'll get another timeout 2 seconds 2330 * later which will attempt a bus reset. 2331 */ 2332 bccb->flags |= BCCB_DEVICE_RESET; 2333 ccb->ccb_h.timeout_ch = 2334 timeout(bttimeout, (caddr_t)bccb, 2 * hz); 2335 2336 bt->recovery_bccb->hccb.opcode = INITIATOR_BUS_DEV_RESET; 2337 2338 /* No Data Transfer */ 2339 bt->recovery_bccb->hccb.datain = TRUE; 2340 bt->recovery_bccb->hccb.dataout = TRUE; 2341 bt->recovery_bccb->hccb.btstat = 0; 2342 bt->recovery_bccb->hccb.sdstat = 0; 2343 bt->recovery_bccb->hccb.target_id = ccb->ccb_h.target_id; 2344 2345 /* Tell the adapter about this command */ 2346 bt->cur_outbox->ccb_addr = btccbvtop(bt, bt->recovery_bccb); 2347 bt->cur_outbox->action_code = BMBO_START; 2348 bt_outb(bt, COMMAND_REG, BOP_START_MBOX); 2349 btnextoutbox(bt); 2350 } 2351 2352 splx(s); 2353} 2354
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