amr.c revision 7656:2621e50fdf4a
1/* 2 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5/* 6 * Copyright (c) 1999,2000 Michael Smith 7 * Copyright (c) 2000 BSDi 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31/* 32 * Copyright (c) 2002 Eric Moore 33 * Copyright (c) 2002 LSI Logic Corporation 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. The party using or redistributing the source code and binary forms 45 * agrees to the disclaimer below and the terms and conditions set forth 46 * herein. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 */ 60 61#include <sys/int_types.h> 62#include <sys/scsi/scsi.h> 63#include <sys/dkbad.h> 64#include <sys/dklabel.h> 65#include <sys/dkio.h> 66#include <sys/cdio.h> 67#include <sys/mhd.h> 68#include <sys/vtoc.h> 69#include <sys/dktp/fdisk.h> 70#include <sys/scsi/targets/sddef.h> 71#include <sys/debug.h> 72#include <sys/pci.h> 73#include <sys/ksynch.h> 74#include <sys/ddi.h> 75#include <sys/sunddi.h> 76#include <sys/modctl.h> 77#include <sys/byteorder.h> 78 79#include "amrreg.h" 80#include "amrvar.h" 81 82/* dynamic debug symbol */ 83int amr_debug_var = 0; 84 85#define AMR_DELAY(cond, count, done_flag) { \ 86 int local_counter = 0; \ 87 done_flag = 1; \ 88 while (!(cond)) { \ 89 delay(drv_usectohz(100)); \ 90 if ((local_counter) > count) { \ 91 done_flag = 0; \ 92 break; \ 93 } \ 94 (local_counter)++; \ 95 } \ 96 } 97 98#define AMR_BUSYWAIT(cond, count, done_flag) { \ 99 int local_counter = 0; \ 100 done_flag = 1; \ 101 while (!(cond)) { \ 102 drv_usecwait(100); \ 103 if ((local_counter) > count) { \ 104 done_flag = 0; \ 105 break; \ 106 } \ 107 (local_counter)++; \ 108 } \ 109 } 110 111/* 112 * driver interfaces 113 */ 114char _depends_on[] = "misc/scsi"; 115 116static uint_t amr_intr(caddr_t arg); 117static void amr_done(struct amr_softs *softs); 118 119static int amr_info(dev_info_t *dip, ddi_info_cmd_t infocmd, 120 void *arg, void **result); 121static int amr_attach(dev_info_t *, ddi_attach_cmd_t); 122static int amr_detach(dev_info_t *, ddi_detach_cmd_t); 123 124static int amr_setup_mbox(struct amr_softs *softs); 125static int amr_setup_sg(struct amr_softs *softs); 126 127/* 128 * Command wrappers 129 */ 130static int amr_query_controller(struct amr_softs *softs); 131static void *amr_enquiry(struct amr_softs *softs, size_t bufsize, 132 uint8_t cmd, uint8_t cmdsub, uint8_t cmdqual); 133static int amr_flush(struct amr_softs *softs); 134 135/* 136 * Command processing. 137 */ 138static void amr_rw_command(struct amr_softs *softs, 139 struct scsi_pkt *pkt, int lun); 140static void amr_mode_sense(union scsi_cdb *cdbp, struct buf *bp, 141 unsigned int capacity); 142static void amr_set_arq_data(struct scsi_pkt *pkt, uchar_t key); 143static int amr_enquiry_mapcmd(struct amr_command *ac, uint32_t data_size); 144static void amr_enquiry_unmapcmd(struct amr_command *ac); 145static int amr_mapcmd(struct amr_command *ac, int (*callback)(), caddr_t arg); 146static void amr_unmapcmd(struct amr_command *ac); 147 148/* 149 * Status monitoring 150 */ 151static void amr_periodic(void *data); 152 153/* 154 * Interface-specific shims 155 */ 156static int amr_poll_command(struct amr_command *ac); 157static void amr_start_waiting_queue(void *softp); 158static void amr_call_pkt_comp(struct amr_command *head); 159 160/* 161 * SCSI interface 162 */ 163static int amr_setup_tran(dev_info_t *dip, struct amr_softs *softp); 164 165/* 166 * Function prototypes 167 * 168 * SCSA functions exported by means of the transport table 169 */ 170static int amr_tran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip, 171 scsi_hba_tran_t *tran, struct scsi_device *sd); 172static int amr_tran_start(struct scsi_address *ap, struct scsi_pkt *pkt); 173static int amr_tran_reset(struct scsi_address *ap, int level); 174static int amr_tran_getcap(struct scsi_address *ap, char *cap, int whom); 175static int amr_tran_setcap(struct scsi_address *ap, char *cap, int value, 176 int whom); 177static struct scsi_pkt *amr_tran_init_pkt(struct scsi_address *ap, 178 struct scsi_pkt *pkt, struct buf *bp, int cmdlen, int statuslen, 179 int tgtlen, int flags, int (*callback)(), caddr_t arg); 180static void amr_tran_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt); 181static void amr_tran_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt); 182static void amr_tran_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt); 183 184static ddi_dma_attr_t buffer_dma_attr = { 185 DMA_ATTR_V0, /* version of this structure */ 186 0, /* lowest usable address */ 187 0xffffffffull, /* highest usable address */ 188 0x00ffffffull, /* maximum DMAable byte count */ 189 4, /* alignment */ 190 1, /* burst sizes */ 191 1, /* minimum transfer */ 192 0xffffffffull, /* maximum transfer */ 193 0xffffffffull, /* maximum segment length */ 194 AMR_NSEG, /* maximum number of segments */ 195 AMR_BLKSIZE, /* granularity */ 196 0, /* flags (reserved) */ 197}; 198 199static ddi_dma_attr_t addr_dma_attr = { 200 DMA_ATTR_V0, /* version of this structure */ 201 0, /* lowest usable address */ 202 0xffffffffull, /* highest usable address */ 203 0x7fffffff, /* maximum DMAable byte count */ 204 4, /* alignment */ 205 1, /* burst sizes */ 206 1, /* minimum transfer */ 207 0xffffffffull, /* maximum transfer */ 208 0xffffffffull, /* maximum segment length */ 209 1, /* maximum number of segments */ 210 1, /* granularity */ 211 0, /* flags (reserved) */ 212}; 213 214 215static struct dev_ops amr_ops = { 216 DEVO_REV, /* devo_rev, */ 217 0, /* refcnt */ 218 amr_info, /* info */ 219 nulldev, /* identify */ 220 nulldev, /* probe */ 221 amr_attach, /* attach */ 222 amr_detach, /* detach */ 223 nodev, /* reset */ 224 NULL, /* driver operations */ 225 (struct bus_ops *)0, /* bus operations */ 226 0, /* power */ 227 ddi_quiesce_not_supported, /* devo_quiesce */ 228}; 229 230 231extern struct mod_ops mod_driverops; 232static struct modldrv modldrv = { 233 &mod_driverops, /* Type of module. driver here */ 234 "AMR Driver", /* Name of the module. */ 235 &amr_ops, /* Driver ops vector */ 236}; 237 238static struct modlinkage modlinkage = { 239 MODREV_1, 240 &modldrv, 241 NULL 242}; 243 244/* DMA access attributes */ 245static ddi_device_acc_attr_t accattr = { 246 DDI_DEVICE_ATTR_V0, 247 DDI_NEVERSWAP_ACC, 248 DDI_STRICTORDER_ACC 249}; 250 251static struct amr_softs *amr_softstatep; 252 253 254int 255_init(void) 256{ 257 int error; 258 259 error = ddi_soft_state_init((void *)&amr_softstatep, 260 sizeof (struct amr_softs), 0); 261 262 if (error != 0) 263 goto error_out; 264 265 if ((error = scsi_hba_init(&modlinkage)) != 0) { 266 ddi_soft_state_fini((void*)&amr_softstatep); 267 goto error_out; 268 } 269 270 error = mod_install(&modlinkage); 271 if (error != 0) { 272 scsi_hba_fini(&modlinkage); 273 ddi_soft_state_fini((void*)&amr_softstatep); 274 goto error_out; 275 } 276 277 return (error); 278 279error_out: 280 cmn_err(CE_NOTE, "_init failed"); 281 return (error); 282} 283 284int 285_info(struct modinfo *modinfop) 286{ 287 return (mod_info(&modlinkage, modinfop)); 288} 289 290int 291_fini(void) 292{ 293 int error; 294 295 if ((error = mod_remove(&modlinkage)) != 0) { 296 return (error); 297 } 298 299 scsi_hba_fini(&modlinkage); 300 301 ddi_soft_state_fini((void*)&amr_softstatep); 302 return (error); 303} 304 305 306static int 307amr_attach(dev_info_t *dev, ddi_attach_cmd_t cmd) 308{ 309 struct amr_softs *softs; 310 int error; 311 uint32_t command, i; 312 int instance; 313 caddr_t cfgaddr; 314 315 instance = ddi_get_instance(dev); 316 317 switch (cmd) { 318 case DDI_ATTACH: 319 break; 320 321 case DDI_RESUME: 322 return (DDI_FAILURE); 323 324 default: 325 return (DDI_FAILURE); 326 } 327 328 /* 329 * Initialize softs. 330 */ 331 if (ddi_soft_state_zalloc(amr_softstatep, instance) != DDI_SUCCESS) 332 return (DDI_FAILURE); 333 softs = ddi_get_soft_state(amr_softstatep, instance); 334 softs->state |= AMR_STATE_SOFT_STATE_SETUP; 335 336 softs->dev_info_p = dev; 337 338 AMRDB_PRINT((CE_NOTE, "softs: %p; busy_slot addr: %p", 339 (void *)softs, (void *)&(softs->amr_busyslots))); 340 341 if (pci_config_setup(dev, &(softs->pciconfig_handle)) 342 != DDI_SUCCESS) { 343 goto error_out; 344 } 345 softs->state |= AMR_STATE_PCI_CONFIG_SETUP; 346 347 error = ddi_regs_map_setup(dev, 1, &cfgaddr, 0, 0, 348 &accattr, &(softs->regsmap_handle)); 349 if (error != DDI_SUCCESS) { 350 goto error_out; 351 } 352 softs->state |= AMR_STATE_PCI_MEM_MAPPED; 353 354 /* 355 * Determine board type. 356 */ 357 command = pci_config_get16(softs->pciconfig_handle, PCI_CONF_COMM); 358 359 /* 360 * Make sure we are going to be able to talk to this board. 361 */ 362 if ((command & PCI_COMM_MAE) == 0) { 363 AMRDB_PRINT((CE_NOTE, "memory window not available")); 364 goto error_out; 365 } 366 367 /* force the busmaster enable bit on */ 368 if (!(command & PCI_COMM_ME)) { 369 command |= PCI_COMM_ME; 370 pci_config_put16(softs->pciconfig_handle, 371 PCI_CONF_COMM, command); 372 command = pci_config_get16(softs->pciconfig_handle, 373 PCI_CONF_COMM); 374 if (!(command & PCI_COMM_ME)) 375 goto error_out; 376 } 377 378 /* 379 * Allocate and connect our interrupt. 380 */ 381 if (ddi_intr_hilevel(dev, 0) != 0) { 382 AMRDB_PRINT((CE_NOTE, 383 "High level interrupt is not supported!")); 384 goto error_out; 385 } 386 387 if (ddi_get_iblock_cookie(dev, 0, &softs->iblock_cookiep) 388 != DDI_SUCCESS) { 389 goto error_out; 390 } 391 392 mutex_init(&softs->cmd_mutex, NULL, MUTEX_DRIVER, 393 softs->iblock_cookiep); /* should be used in interrupt */ 394 mutex_init(&softs->queue_mutex, NULL, MUTEX_DRIVER, 395 softs->iblock_cookiep); /* should be used in interrupt */ 396 mutex_init(&softs->periodic_mutex, NULL, MUTEX_DRIVER, 397 softs->iblock_cookiep); /* should be used in interrupt */ 398 /* sychronize waits for the busy slots via this cv */ 399 cv_init(&softs->cmd_cv, NULL, CV_DRIVER, NULL); 400 softs->state |= AMR_STATE_KMUTEX_INITED; 401 402 /* 403 * Do bus-independent initialisation, bring controller online. 404 */ 405 if (amr_setup_mbox(softs) != DDI_SUCCESS) 406 goto error_out; 407 softs->state |= AMR_STATE_MAILBOX_SETUP; 408 409 if (amr_setup_sg(softs) != DDI_SUCCESS) 410 goto error_out; 411 412 softs->state |= AMR_STATE_SG_TABLES_SETUP; 413 414 if (amr_query_controller(softs) != DDI_SUCCESS) 415 goto error_out; 416 417 /* 418 * A taskq is created for dispatching the waiting queue processing 419 * thread. The threads number equals to the logic drive number and 420 * the thread number should be 1 if there is no logic driver is 421 * configured for this instance. 422 */ 423 if ((softs->amr_taskq = ddi_taskq_create(dev, "amr_taskq", 424 MAX(softs->amr_nlogdrives, 1), TASKQ_DEFAULTPRI, 0)) == NULL) { 425 goto error_out; 426 } 427 softs->state |= AMR_STATE_TASKQ_SETUP; 428 429 if (ddi_add_intr(dev, 0, &softs->iblock_cookiep, NULL, 430 amr_intr, (caddr_t)softs) != DDI_SUCCESS) { 431 goto error_out; 432 } 433 softs->state |= AMR_STATE_INTR_SETUP; 434 435 /* set up the tran interface */ 436 if (amr_setup_tran(softs->dev_info_p, softs) != DDI_SUCCESS) { 437 AMRDB_PRINT((CE_NOTE, "setup tran failed")); 438 goto error_out; 439 } 440 softs->state |= AMR_STATE_TRAN_SETUP; 441 442 /* schedule a thread for periodic check */ 443 mutex_enter(&softs->periodic_mutex); 444 softs->timeout_t = timeout(amr_periodic, (void *)softs, 445 drv_usectohz(500000*AMR_PERIODIC_TIMEOUT)); 446 softs->state |= AMR_STATE_TIMEOUT_ENABLED; 447 mutex_exit(&softs->periodic_mutex); 448 449 /* print firmware information in verbose mode */ 450 cmn_err(CE_CONT, "?MegaRaid %s %s attached.", 451 softs->amr_product_info.pi_product_name, 452 softs->amr_product_info.pi_firmware_ver); 453 454 /* clear any interrupts */ 455 AMR_QCLEAR_INTR(softs); 456 return (DDI_SUCCESS); 457 458error_out: 459 if (softs->state & AMR_STATE_INTR_SETUP) { 460 ddi_remove_intr(dev, 0, softs->iblock_cookiep); 461 } 462 if (softs->state & AMR_STATE_TASKQ_SETUP) { 463 ddi_taskq_destroy(softs->amr_taskq); 464 } 465 if (softs->state & AMR_STATE_SG_TABLES_SETUP) { 466 for (i = 0; i < softs->sg_max_count; i++) { 467 (void) ddi_dma_unbind_handle( 468 softs->sg_items[i].sg_handle); 469 (void) ddi_dma_mem_free( 470 &((softs->sg_items[i]).sg_acc_handle)); 471 (void) ddi_dma_free_handle( 472 &(softs->sg_items[i].sg_handle)); 473 } 474 } 475 if (softs->state & AMR_STATE_MAILBOX_SETUP) { 476 (void) ddi_dma_unbind_handle(softs->mbox_dma_handle); 477 (void) ddi_dma_mem_free(&softs->mbox_acc_handle); 478 (void) ddi_dma_free_handle(&softs->mbox_dma_handle); 479 } 480 if (softs->state & AMR_STATE_KMUTEX_INITED) { 481 mutex_destroy(&softs->queue_mutex); 482 mutex_destroy(&softs->cmd_mutex); 483 mutex_destroy(&softs->periodic_mutex); 484 cv_destroy(&softs->cmd_cv); 485 } 486 if (softs->state & AMR_STATE_PCI_MEM_MAPPED) 487 ddi_regs_map_free(&softs->regsmap_handle); 488 if (softs->state & AMR_STATE_PCI_CONFIG_SETUP) 489 pci_config_teardown(&softs->pciconfig_handle); 490 if (softs->state & AMR_STATE_SOFT_STATE_SETUP) 491 ddi_soft_state_free(amr_softstatep, instance); 492 return (DDI_FAILURE); 493} 494 495/* 496 * Bring the controller down to a dormant state and detach all child devices. 497 * This function is called during detach, system shutdown. 498 * 499 * Note that we can assume that the bufq on the controller is empty, as we won't 500 * allow shutdown if any device is open. 501 */ 502/*ARGSUSED*/ 503static int amr_detach(dev_info_t *dev, ddi_detach_cmd_t cmd) 504{ 505 struct amr_softs *softs; 506 int instance; 507 uint32_t i, done_flag; 508 509 instance = ddi_get_instance(dev); 510 softs = ddi_get_soft_state(amr_softstatep, instance); 511 512 /* flush the controllor */ 513 if (amr_flush(softs) != 0) { 514 AMRDB_PRINT((CE_NOTE, "device shutdown failed")); 515 return (EIO); 516 } 517 518 /* release the amr timer */ 519 mutex_enter(&softs->periodic_mutex); 520 softs->state &= ~AMR_STATE_TIMEOUT_ENABLED; 521 if (softs->timeout_t) { 522 (void) untimeout(softs->timeout_t); 523 softs->timeout_t = 0; 524 } 525 mutex_exit(&softs->periodic_mutex); 526 527 for (i = 0; i < softs->sg_max_count; i++) { 528 (void) ddi_dma_unbind_handle( 529 softs->sg_items[i].sg_handle); 530 (void) ddi_dma_mem_free( 531 &((softs->sg_items[i]).sg_acc_handle)); 532 (void) ddi_dma_free_handle( 533 &(softs->sg_items[i].sg_handle)); 534 } 535 536 (void) ddi_dma_unbind_handle(softs->mbox_dma_handle); 537 (void) ddi_dma_mem_free(&softs->mbox_acc_handle); 538 (void) ddi_dma_free_handle(&softs->mbox_dma_handle); 539 540 /* disconnect the interrupt handler */ 541 ddi_remove_intr(softs->dev_info_p, 0, softs->iblock_cookiep); 542 543 /* wait for the completion of current in-progress interruptes */ 544 AMR_DELAY((softs->amr_interrupts_counter == 0), 1000, done_flag); 545 if (!done_flag) { 546 cmn_err(CE_WARN, "Suspicious interrupts in-progress."); 547 } 548 549 ddi_taskq_destroy(softs->amr_taskq); 550 551 (void) scsi_hba_detach(dev); 552 scsi_hba_tran_free(softs->hba_tran); 553 ddi_regs_map_free(&softs->regsmap_handle); 554 pci_config_teardown(&softs->pciconfig_handle); 555 556 mutex_destroy(&softs->queue_mutex); 557 mutex_destroy(&softs->cmd_mutex); 558 mutex_destroy(&softs->periodic_mutex); 559 cv_destroy(&softs->cmd_cv); 560 561 /* print firmware information in verbose mode */ 562 cmn_err(CE_NOTE, "?MegaRaid %s %s detached.", 563 softs->amr_product_info.pi_product_name, 564 softs->amr_product_info.pi_firmware_ver); 565 566 ddi_soft_state_free(amr_softstatep, instance); 567 568 return (DDI_SUCCESS); 569} 570 571 572/*ARGSUSED*/ 573static int amr_info(dev_info_t *dip, ddi_info_cmd_t infocmd, 574 void *arg, void **result) 575{ 576 struct amr_softs *softs; 577 int instance; 578 579 instance = ddi_get_instance(dip); 580 581 switch (infocmd) { 582 case DDI_INFO_DEVT2DEVINFO: 583 softs = ddi_get_soft_state(amr_softstatep, instance); 584 if (softs != NULL) { 585 *result = softs->dev_info_p; 586 return (DDI_SUCCESS); 587 } else { 588 *result = NULL; 589 return (DDI_FAILURE); 590 } 591 case DDI_INFO_DEVT2INSTANCE: 592 *(int *)result = instance; 593 break; 594 default: 595 break; 596 } 597 return (DDI_SUCCESS); 598} 599 600/* 601 * Take an interrupt, or be poked by other code to look for interrupt-worthy 602 * status. 603 */ 604static uint_t 605amr_intr(caddr_t arg) 606{ 607 struct amr_softs *softs = (struct amr_softs *)arg; 608 609 softs->amr_interrupts_counter++; 610 611 if (AMR_QGET_ODB(softs) != AMR_QODB_READY) { 612 softs->amr_interrupts_counter--; 613 return (DDI_INTR_UNCLAIMED); 614 } 615 616 /* collect finished commands, queue anything waiting */ 617 amr_done(softs); 618 619 softs->amr_interrupts_counter--; 620 621 return (DDI_INTR_CLAIMED); 622 623} 624 625/* 626 * Setup the amr mailbox 627 */ 628static int 629amr_setup_mbox(struct amr_softs *softs) 630{ 631 uint32_t move; 632 size_t mbox_len; 633 634 if (ddi_dma_alloc_handle( 635 softs->dev_info_p, 636 &addr_dma_attr, 637 DDI_DMA_SLEEP, 638 NULL, 639 &softs->mbox_dma_handle) != DDI_SUCCESS) { 640 AMRDB_PRINT((CE_NOTE, "Cannot alloc dma handle for mailbox")); 641 goto error_out; 642 } 643 644 if (ddi_dma_mem_alloc( 645 softs->mbox_dma_handle, 646 sizeof (struct amr_mailbox) + 16, 647 &accattr, 648 DDI_DMA_RDWR | DDI_DMA_CONSISTENT, 649 DDI_DMA_SLEEP, 650 NULL, 651 (caddr_t *)(&softs->mbox), 652 &mbox_len, 653 &softs->mbox_acc_handle) != 654 DDI_SUCCESS) { 655 656 AMRDB_PRINT((CE_WARN, "Cannot alloc dma memory for mailbox")); 657 goto error_out; 658 } 659 660 if (ddi_dma_addr_bind_handle( 661 softs->mbox_dma_handle, 662 NULL, 663 (caddr_t)softs->mbox, 664 mbox_len, 665 DDI_DMA_RDWR | DDI_DMA_CONSISTENT, 666 DDI_DMA_SLEEP, 667 NULL, 668 &softs->mbox_dma_cookie, 669 &softs->mbox_dma_cookien) != DDI_DMA_MAPPED) { 670 671 AMRDB_PRINT((CE_NOTE, "Cannot bind dma memory for mailbox")); 672 goto error_out; 673 } 674 675 if (softs->mbox_dma_cookien != 1) 676 goto error_out; 677 678 /* The phy address of mailbox must be aligned on a 16-byte boundary */ 679 move = 16 - (((uint32_t)softs->mbox_dma_cookie.dmac_address)&0xf); 680 softs->mbox_phyaddr = 681 (softs->mbox_dma_cookie.dmac_address + move); 682 683 softs->mailbox = 684 (struct amr_mailbox *)(((uintptr_t)softs->mbox) + move); 685 686 AMRDB_PRINT((CE_NOTE, "phraddy=%x, mailbox=%p, softs->mbox=%p, move=%x", 687 softs->mbox_phyaddr, (void *)softs->mailbox, 688 softs->mbox, move)); 689 690 return (DDI_SUCCESS); 691 692error_out: 693 if (softs->mbox_dma_cookien) 694 (void) ddi_dma_unbind_handle(softs->mbox_dma_handle); 695 if (softs->mbox_acc_handle) { 696 (void) ddi_dma_mem_free(&(softs->mbox_acc_handle)); 697 softs->mbox_acc_handle = NULL; 698 } 699 if (softs->mbox_dma_handle) { 700 (void) ddi_dma_free_handle(&softs->mbox_dma_handle); 701 softs->mbox_dma_handle = NULL; 702 } 703 704 return (DDI_FAILURE); 705} 706 707/* 708 * Perform a periodic check of the controller status 709 */ 710static void 711amr_periodic(void *data) 712{ 713 uint32_t i; 714 struct amr_softs *softs = (struct amr_softs *)data; 715 struct scsi_pkt *pkt; 716 register struct amr_command *ac; 717 718 for (i = 0; i < softs->sg_max_count; i++) { 719 if (softs->busycmd[i] == NULL) 720 continue; 721 722 mutex_enter(&softs->cmd_mutex); 723 724 if (softs->busycmd[i] == NULL) { 725 mutex_exit(&softs->cmd_mutex); 726 continue; 727 } 728 729 pkt = softs->busycmd[i]->pkt; 730 731 if ((pkt->pkt_time != 0) && 732 (ddi_get_time() - 733 softs->busycmd[i]->ac_timestamp > 734 pkt->pkt_time)) { 735 736 cmn_err(CE_WARN, 737 "!timed out packet detected,\ 738 sc = %p, pkt = %p, index = %d, ac = %p", 739 (void *)softs, 740 (void *)pkt, 741 i, 742 (void *)softs->busycmd[i]); 743 744 ac = softs->busycmd[i]; 745 ac->ac_next = NULL; 746 747 /* pull command from the busy index */ 748 softs->busycmd[i] = NULL; 749 if (softs->amr_busyslots > 0) 750 softs->amr_busyslots--; 751 if (softs->amr_busyslots == 0) 752 cv_broadcast(&softs->cmd_cv); 753 754 mutex_exit(&softs->cmd_mutex); 755 756 pkt = ac->pkt; 757 *pkt->pkt_scbp = 0; 758 pkt->pkt_statistics |= STAT_TIMEOUT; 759 pkt->pkt_reason = CMD_TIMEOUT; 760 if (!(pkt->pkt_flags & 761 FLAG_NOINTR) && pkt->pkt_comp) { 762 /* call pkt callback */ 763 (*pkt->pkt_comp)(pkt); 764 } 765 766 } else { 767 mutex_exit(&softs->cmd_mutex); 768 } 769 } 770 771 /* restart the amr timer */ 772 mutex_enter(&softs->periodic_mutex); 773 if (softs->state & AMR_STATE_TIMEOUT_ENABLED) 774 softs->timeout_t = timeout(amr_periodic, (void *)softs, 775 drv_usectohz(500000*AMR_PERIODIC_TIMEOUT)); 776 mutex_exit(&softs->periodic_mutex); 777} 778 779/* 780 * Interrogate the controller for the operational parameters we require. 781 */ 782static int 783amr_query_controller(struct amr_softs *softs) 784{ 785 struct amr_enquiry3 *aex; 786 struct amr_prodinfo *ap; 787 struct amr_enquiry *ae; 788 uint32_t ldrv; 789 int instance; 790 791 /* 792 * If we haven't found the real limit yet, let us have a couple of 793 * commands in order to be able to probe. 794 */ 795 if (softs->maxio == 0) 796 softs->maxio = 2; 797 798 instance = ddi_get_instance(softs->dev_info_p); 799 800 /* 801 * Try to issue an ENQUIRY3 command 802 */ 803 if ((aex = amr_enquiry(softs, AMR_ENQ_BUFFER_SIZE, AMR_CMD_CONFIG, 804 AMR_CONFIG_ENQ3, AMR_CONFIG_ENQ3_SOLICITED_FULL)) != NULL) { 805 806 AMRDB_PRINT((CE_NOTE, "First enquiry")); 807 808 for (ldrv = 0; ldrv < aex->ae_numldrives; ldrv++) { 809 softs->logic_drive[ldrv].al_size = 810 aex->ae_drivesize[ldrv]; 811 softs->logic_drive[ldrv].al_state = 812 aex->ae_drivestate[ldrv]; 813 softs->logic_drive[ldrv].al_properties = 814 aex->ae_driveprop[ldrv]; 815 AMRDB_PRINT((CE_NOTE, 816 " drive %d: size: %d state %x properties %x\n", 817 ldrv, 818 softs->logic_drive[ldrv].al_size, 819 softs->logic_drive[ldrv].al_state, 820 softs->logic_drive[ldrv].al_properties)); 821 822 if (softs->logic_drive[ldrv].al_state == 823 AMR_LDRV_OFFLINE) 824 cmn_err(CE_NOTE, 825 "!instance %d log-drive %d is offline", 826 instance, ldrv); 827 else 828 softs->amr_nlogdrives++; 829 } 830 kmem_free(aex, AMR_ENQ_BUFFER_SIZE); 831 832 if ((ap = amr_enquiry(softs, AMR_ENQ_BUFFER_SIZE, 833 AMR_CMD_CONFIG, AMR_CONFIG_PRODUCT_INFO, 0)) == NULL) { 834 AMRDB_PRINT((CE_NOTE, 835 "Cannot obtain product data from controller")); 836 return (EIO); 837 } 838 839 softs->maxdrives = AMR_40LD_MAXDRIVES; 840 softs->maxchan = ap->ap_nschan; 841 softs->maxio = ap->ap_maxio; 842 843 bcopy(ap->ap_firmware, softs->amr_product_info.pi_firmware_ver, 844 AMR_FIRMWARE_VER_SIZE); 845 softs->amr_product_info. 846 pi_firmware_ver[AMR_FIRMWARE_VER_SIZE] = 0; 847 848 bcopy(ap->ap_product, softs->amr_product_info.pi_product_name, 849 AMR_PRODUCT_INFO_SIZE); 850 softs->amr_product_info. 851 pi_product_name[AMR_PRODUCT_INFO_SIZE] = 0; 852 853 kmem_free(ap, AMR_ENQ_BUFFER_SIZE); 854 AMRDB_PRINT((CE_NOTE, "maxio=%d", softs->maxio)); 855 } else { 856 857 AMRDB_PRINT((CE_NOTE, "First enquiry failed, \ 858 so try another way")); 859 860 /* failed, try the 8LD ENQUIRY commands */ 861 if ((ae = (struct amr_enquiry *)amr_enquiry(softs, 862 AMR_ENQ_BUFFER_SIZE, AMR_CMD_EXT_ENQUIRY2, 0, 0)) 863 == NULL) { 864 865 if ((ae = (struct amr_enquiry *)amr_enquiry(softs, 866 AMR_ENQ_BUFFER_SIZE, AMR_CMD_ENQUIRY, 0, 0)) 867 == NULL) { 868 AMRDB_PRINT((CE_NOTE, 869 "Cannot obtain configuration data")); 870 return (EIO); 871 } 872 ae->ae_signature = 0; 873 } 874 875 /* 876 * Fetch current state of logical drives. 877 */ 878 for (ldrv = 0; ldrv < ae->ae_ldrv.al_numdrives; ldrv++) { 879 softs->logic_drive[ldrv].al_size = 880 ae->ae_ldrv.al_size[ldrv]; 881 softs->logic_drive[ldrv].al_state = 882 ae->ae_ldrv.al_state[ldrv]; 883 softs->logic_drive[ldrv].al_properties = 884 ae->ae_ldrv.al_properties[ldrv]; 885 AMRDB_PRINT((CE_NOTE, 886 " ********* drive %d: %d state %x properties %x", 887 ldrv, 888 softs->logic_drive[ldrv].al_size, 889 softs->logic_drive[ldrv].al_state, 890 softs->logic_drive[ldrv].al_properties)); 891 892 if (softs->logic_drive[ldrv].al_state == 893 AMR_LDRV_OFFLINE) 894 cmn_err(CE_NOTE, 895 "!instance %d log-drive %d is offline", 896 instance, ldrv); 897 else 898 softs->amr_nlogdrives++; 899 } 900 901 softs->maxdrives = AMR_8LD_MAXDRIVES; 902 softs->maxchan = ae->ae_adapter.aa_channels; 903 softs->maxio = ae->ae_adapter.aa_maxio; 904 kmem_free(ae, AMR_ENQ_BUFFER_SIZE); 905 } 906 907 /* 908 * Mark remaining drives as unused. 909 */ 910 for (; ldrv < AMR_MAXLD; ldrv++) 911 softs->logic_drive[ldrv].al_state = AMR_LDRV_OFFLINE; 912 913 /* 914 * Cap the maximum number of outstanding I/Os. AMI's driver 915 * doesn't trust the controller's reported value, and lockups have 916 * been seen when we do. 917 */ 918 softs->maxio = MIN(softs->maxio, AMR_LIMITCMD); 919 920 return (DDI_SUCCESS); 921} 922 923/* 924 * Run a generic enquiry-style command. 925 */ 926static void * 927amr_enquiry(struct amr_softs *softs, size_t bufsize, uint8_t cmd, 928 uint8_t cmdsub, uint8_t cmdqual) 929{ 930 struct amr_command ac; 931 void *result; 932 933 result = NULL; 934 935 bzero(&ac, sizeof (struct amr_command)); 936 ac.ac_softs = softs; 937 938 /* set command flags */ 939 ac.ac_flags |= AMR_CMD_DATAOUT; 940 941 /* build the command proper */ 942 ac.mailbox.mb_command = cmd; 943 ac.mailbox.mb_cmdsub = cmdsub; 944 ac.mailbox.mb_cmdqual = cmdqual; 945 946 if (amr_enquiry_mapcmd(&ac, bufsize) != DDI_SUCCESS) 947 return (NULL); 948 949 if (amr_poll_command(&ac) || ac.ac_status != 0) { 950 AMRDB_PRINT((CE_NOTE, "can not poll command, goto out")); 951 amr_enquiry_unmapcmd(&ac); 952 return (NULL); 953 } 954 955 /* allocate the response structure */ 956 result = kmem_zalloc(bufsize, KM_SLEEP); 957 958 bcopy(ac.ac_data, result, bufsize); 959 960 amr_enquiry_unmapcmd(&ac); 961 return (result); 962} 963 964/* 965 * Flush the controller's internal cache, return status. 966 */ 967static int 968amr_flush(struct amr_softs *softs) 969{ 970 struct amr_command ac; 971 int error = 0; 972 973 bzero(&ac, sizeof (struct amr_command)); 974 ac.ac_softs = softs; 975 976 ac.ac_flags |= AMR_CMD_DATAOUT; 977 978 /* build the command proper */ 979 ac.mailbox.mb_command = AMR_CMD_FLUSH; 980 981 /* have to poll, as the system may be going down or otherwise damaged */ 982 if (error = amr_poll_command(&ac)) { 983 AMRDB_PRINT((CE_NOTE, "can not poll this cmd")); 984 return (error); 985 } 986 987 return (error); 988} 989 990/* 991 * Take a command, submit it to the controller and wait for it to return. 992 * Returns nonzero on error. Can be safely called with interrupts enabled. 993 */ 994static int 995amr_poll_command(struct amr_command *ac) 996{ 997 struct amr_softs *softs = ac->ac_softs; 998 volatile uint32_t done_flag; 999 1000 AMRDB_PRINT((CE_NOTE, "Amr_Poll bcopy(%p, %p, %d)", 1001 (void *)&ac->mailbox, 1002 (void *)softs->mailbox, 1003 (uint32_t)AMR_MBOX_CMDSIZE)); 1004 1005 mutex_enter(&softs->cmd_mutex); 1006 1007 while (softs->amr_busyslots != 0) 1008 cv_wait(&softs->cmd_cv, &softs->cmd_mutex); 1009 1010 /* 1011 * For read/write commands, the scatter/gather table should be 1012 * filled, and the last entry in scatter/gather table will be used. 1013 */ 1014 if ((ac->mailbox.mb_command == AMR_CMD_LREAD) || 1015 (ac->mailbox.mb_command == AMR_CMD_LWRITE)) { 1016 bcopy(ac->sgtable, 1017 softs->sg_items[softs->sg_max_count - 1].sg_table, 1018 sizeof (struct amr_sgentry) * AMR_NSEG); 1019 1020 (void) ddi_dma_sync( 1021 softs->sg_items[softs->sg_max_count - 1].sg_handle, 1022 0, 0, DDI_DMA_SYNC_FORDEV); 1023 1024 ac->mailbox.mb_physaddr = 1025 softs->sg_items[softs->sg_max_count - 1].sg_phyaddr; 1026 } 1027 1028 bcopy(&ac->mailbox, (void *)softs->mailbox, AMR_MBOX_CMDSIZE); 1029 1030 /* sync the dma memory */ 1031 (void) ddi_dma_sync(softs->mbox_dma_handle, 0, 0, DDI_DMA_SYNC_FORDEV); 1032 1033 /* clear the poll/ack fields in the mailbox */ 1034 softs->mailbox->mb_ident = AMR_POLL_COMMAND_ID; 1035 softs->mailbox->mb_nstatus = AMR_POLL_DEFAULT_NSTATUS; 1036 softs->mailbox->mb_status = AMR_POLL_DEFAULT_STATUS; 1037 softs->mailbox->mb_poll = 0; 1038 softs->mailbox->mb_ack = 0; 1039 softs->mailbox->mb_busy = 1; 1040 1041 AMR_QPUT_IDB(softs, softs->mbox_phyaddr | AMR_QIDB_SUBMIT); 1042 1043 /* sync the dma memory */ 1044 (void) ddi_dma_sync(softs->mbox_dma_handle, 0, 0, DDI_DMA_SYNC_FORCPU); 1045 1046 AMR_DELAY((softs->mailbox->mb_nstatus != AMR_POLL_DEFAULT_NSTATUS), 1047 1000, done_flag); 1048 if (!done_flag) { 1049 mutex_exit(&softs->cmd_mutex); 1050 return (1); 1051 } 1052 1053 ac->ac_status = softs->mailbox->mb_status; 1054 1055 AMR_DELAY((softs->mailbox->mb_poll == AMR_POLL_ACK), 1000, done_flag); 1056 if (!done_flag) { 1057 mutex_exit(&softs->cmd_mutex); 1058 return (1); 1059 } 1060 1061 softs->mailbox->mb_poll = 0; 1062 softs->mailbox->mb_ack = AMR_POLL_ACK; 1063 1064 /* acknowledge that we have the commands */ 1065 AMR_QPUT_IDB(softs, softs->mbox_phyaddr | AMR_QIDB_ACK); 1066 1067 AMR_DELAY(!(AMR_QGET_IDB(softs) & AMR_QIDB_ACK), 1000, done_flag); 1068 if (!done_flag) { 1069 mutex_exit(&softs->cmd_mutex); 1070 return (1); 1071 } 1072 1073 mutex_exit(&softs->cmd_mutex); 1074 return (ac->ac_status != AMR_STATUS_SUCCESS); 1075} 1076 1077/* 1078 * setup the scatter/gather table 1079 */ 1080static int 1081amr_setup_sg(struct amr_softs *softs) 1082{ 1083 uint32_t i; 1084 size_t len; 1085 ddi_dma_cookie_t cookie; 1086 uint_t cookien; 1087 1088 softs->sg_max_count = 0; 1089 1090 for (i = 0; i < AMR_MAXCMD; i++) { 1091 1092 /* reset the cookien */ 1093 cookien = 0; 1094 1095 (softs->sg_items[i]).sg_handle = NULL; 1096 if (ddi_dma_alloc_handle( 1097 softs->dev_info_p, 1098 &addr_dma_attr, 1099 DDI_DMA_SLEEP, 1100 NULL, 1101 &((softs->sg_items[i]).sg_handle)) != DDI_SUCCESS) { 1102 1103 AMRDB_PRINT((CE_WARN, 1104 "Cannot alloc dma handle for s/g table")); 1105 goto error_out; 1106 } 1107 1108 if (ddi_dma_mem_alloc((softs->sg_items[i]).sg_handle, 1109 sizeof (struct amr_sgentry) * AMR_NSEG, 1110 &accattr, 1111 DDI_DMA_RDWR | DDI_DMA_CONSISTENT, 1112 DDI_DMA_SLEEP, NULL, 1113 (caddr_t *)(&(softs->sg_items[i]).sg_table), 1114 &len, 1115 &(softs->sg_items[i]).sg_acc_handle) 1116 != DDI_SUCCESS) { 1117 1118 AMRDB_PRINT((CE_WARN, 1119 "Cannot allocate DMA memory")); 1120 goto error_out; 1121 } 1122 1123 if (ddi_dma_addr_bind_handle( 1124 (softs->sg_items[i]).sg_handle, 1125 NULL, 1126 (caddr_t)((softs->sg_items[i]).sg_table), 1127 len, 1128 DDI_DMA_RDWR | DDI_DMA_CONSISTENT, 1129 DDI_DMA_SLEEP, 1130 NULL, 1131 &cookie, 1132 &cookien) != DDI_DMA_MAPPED) { 1133 1134 AMRDB_PRINT((CE_WARN, 1135 "Cannot bind communication area for s/g table")); 1136 goto error_out; 1137 } 1138 1139 if (cookien != 1) 1140 goto error_out; 1141 1142 softs->sg_items[i].sg_phyaddr = cookie.dmac_address; 1143 softs->sg_max_count++; 1144 } 1145 1146 return (DDI_SUCCESS); 1147 1148error_out: 1149 /* 1150 * Couldn't allocate/initialize all of the sg table entries. 1151 * Clean up the partially-initialized entry before returning. 1152 */ 1153 if (cookien) { 1154 (void) ddi_dma_unbind_handle((softs->sg_items[i]).sg_handle); 1155 } 1156 if ((softs->sg_items[i]).sg_acc_handle) { 1157 (void) ddi_dma_mem_free(&((softs->sg_items[i]).sg_acc_handle)); 1158 (softs->sg_items[i]).sg_acc_handle = NULL; 1159 } 1160 if ((softs->sg_items[i]).sg_handle) { 1161 (void) ddi_dma_free_handle(&((softs->sg_items[i]).sg_handle)); 1162 (softs->sg_items[i]).sg_handle = NULL; 1163 } 1164 1165 /* 1166 * At least two sg table entries are needed. One is for regular data 1167 * I/O commands, the other is for poll I/O commands. 1168 */ 1169 return (softs->sg_max_count > 1 ? DDI_SUCCESS : DDI_FAILURE); 1170} 1171 1172/* 1173 * Map/unmap (ac)'s data in the controller's addressable space as required. 1174 * 1175 * These functions may be safely called multiple times on a given command. 1176 */ 1177static void 1178amr_setup_dmamap(struct amr_command *ac, ddi_dma_cookie_t *buffer_dma_cookiep, 1179 int nsegments) 1180{ 1181 struct amr_sgentry *sg; 1182 uint32_t i, size; 1183 1184 sg = ac->sgtable; 1185 1186 size = 0; 1187 1188 ac->mailbox.mb_nsgelem = (uint8_t)nsegments; 1189 for (i = 0; i < nsegments; i++, sg++) { 1190 sg->sg_addr = buffer_dma_cookiep->dmac_address; 1191 sg->sg_count = buffer_dma_cookiep->dmac_size; 1192 size += sg->sg_count; 1193 1194 /* 1195 * There is no next cookie if the end of the current 1196 * window is reached. Otherwise, the next cookie 1197 * would be found. 1198 */ 1199 if ((ac->current_cookie + i + 1) != ac->num_of_cookie) 1200 ddi_dma_nextcookie(ac->buffer_dma_handle, 1201 buffer_dma_cookiep); 1202 } 1203 1204 ac->transfer_size = size; 1205 ac->data_transfered += size; 1206} 1207 1208 1209/* 1210 * map the amr command for enquiry, allocate the DMA resource 1211 */ 1212static int 1213amr_enquiry_mapcmd(struct amr_command *ac, uint32_t data_size) 1214{ 1215 struct amr_softs *softs = ac->ac_softs; 1216 size_t len; 1217 uint_t dma_flags; 1218 1219 AMRDB_PRINT((CE_NOTE, "Amr_enquiry_mapcmd called, ac=%p, flags=%x", 1220 (void *)ac, ac->ac_flags)); 1221 1222 if (ac->ac_flags & AMR_CMD_DATAOUT) { 1223 dma_flags = DDI_DMA_READ; 1224 } else { 1225 dma_flags = DDI_DMA_WRITE; 1226 } 1227 1228 dma_flags |= DDI_DMA_CONSISTENT; 1229 1230 /* process the DMA by address bind mode */ 1231 if (ddi_dma_alloc_handle(softs->dev_info_p, 1232 &addr_dma_attr, DDI_DMA_SLEEP, NULL, 1233 &ac->buffer_dma_handle) != 1234 DDI_SUCCESS) { 1235 1236 AMRDB_PRINT((CE_WARN, 1237 "Cannot allocate addr DMA tag")); 1238 goto error_out; 1239 } 1240 1241 if (ddi_dma_mem_alloc(ac->buffer_dma_handle, 1242 data_size, 1243 &accattr, 1244 dma_flags, 1245 DDI_DMA_SLEEP, 1246 NULL, 1247 (caddr_t *)&ac->ac_data, 1248 &len, 1249 &ac->buffer_acc_handle) != 1250 DDI_SUCCESS) { 1251 1252 AMRDB_PRINT((CE_WARN, 1253 "Cannot allocate DMA memory")); 1254 goto error_out; 1255 } 1256 1257 if ((ddi_dma_addr_bind_handle( 1258 ac->buffer_dma_handle, 1259 NULL, ac->ac_data, len, dma_flags, 1260 DDI_DMA_SLEEP, NULL, &ac->buffer_dma_cookie, 1261 &ac->num_of_cookie)) != DDI_DMA_MAPPED) { 1262 1263 AMRDB_PRINT((CE_WARN, 1264 "Cannot bind addr for dma")); 1265 goto error_out; 1266 } 1267 1268 ac->ac_dataphys = (&ac->buffer_dma_cookie)->dmac_address; 1269 1270 ((struct amr_mailbox *)&(ac->mailbox))->mb_param = 0; 1271 ac->mailbox.mb_nsgelem = 0; 1272 ac->mailbox.mb_physaddr = ac->ac_dataphys; 1273 1274 ac->ac_flags |= AMR_CMD_MAPPED; 1275 1276 return (DDI_SUCCESS); 1277 1278error_out: 1279 if (ac->num_of_cookie) 1280 (void) ddi_dma_unbind_handle(ac->buffer_dma_handle); 1281 if (ac->buffer_acc_handle) { 1282 ddi_dma_mem_free(&ac->buffer_acc_handle); 1283 ac->buffer_acc_handle = NULL; 1284 } 1285 if (ac->buffer_dma_handle) { 1286 (void) ddi_dma_free_handle(&ac->buffer_dma_handle); 1287 ac->buffer_dma_handle = NULL; 1288 } 1289 1290 return (DDI_FAILURE); 1291} 1292 1293/* 1294 * unmap the amr command for enquiry, free the DMA resource 1295 */ 1296static void 1297amr_enquiry_unmapcmd(struct amr_command *ac) 1298{ 1299 AMRDB_PRINT((CE_NOTE, "Amr_enquiry_unmapcmd called, ac=%p", 1300 (void *)ac)); 1301 1302 /* if the command involved data at all and was mapped */ 1303 if ((ac->ac_flags & AMR_CMD_MAPPED) && ac->ac_data) { 1304 if (ac->buffer_dma_handle) 1305 (void) ddi_dma_unbind_handle( 1306 ac->buffer_dma_handle); 1307 if (ac->buffer_acc_handle) { 1308 ddi_dma_mem_free(&ac->buffer_acc_handle); 1309 ac->buffer_acc_handle = NULL; 1310 } 1311 if (ac->buffer_dma_handle) { 1312 (void) ddi_dma_free_handle( 1313 &ac->buffer_dma_handle); 1314 ac->buffer_dma_handle = NULL; 1315 } 1316 } 1317 1318 ac->ac_flags &= ~AMR_CMD_MAPPED; 1319} 1320 1321/* 1322 * map the amr command, allocate the DMA resource 1323 */ 1324static int 1325amr_mapcmd(struct amr_command *ac, int (*callback)(), caddr_t arg) 1326{ 1327 uint_t dma_flags; 1328 off_t off; 1329 size_t len; 1330 int error; 1331 int (*cb)(caddr_t); 1332 1333 AMRDB_PRINT((CE_NOTE, "Amr_mapcmd called, ac=%p, flags=%x", 1334 (void *)ac, ac->ac_flags)); 1335 1336 if (ac->ac_flags & AMR_CMD_DATAOUT) { 1337 dma_flags = DDI_DMA_READ; 1338 } else { 1339 dma_flags = DDI_DMA_WRITE; 1340 } 1341 1342 if (ac->ac_flags & AMR_CMD_PKT_CONSISTENT) { 1343 dma_flags |= DDI_DMA_CONSISTENT; 1344 } 1345 if (ac->ac_flags & AMR_CMD_PKT_DMA_PARTIAL) { 1346 dma_flags |= DDI_DMA_PARTIAL; 1347 } 1348 1349 if ((!(ac->ac_flags & AMR_CMD_MAPPED)) && (ac->ac_buf == NULL)) { 1350 ac->ac_flags |= AMR_CMD_MAPPED; 1351 return (DDI_SUCCESS); 1352 } 1353 1354 cb = (callback == NULL_FUNC) ? DDI_DMA_DONTWAIT : DDI_DMA_SLEEP; 1355 1356 /* if the command involves data at all, and hasn't been mapped */ 1357 if (!(ac->ac_flags & AMR_CMD_MAPPED)) { 1358 /* process the DMA by buffer bind mode */ 1359 error = ddi_dma_buf_bind_handle(ac->buffer_dma_handle, 1360 ac->ac_buf, 1361 dma_flags, 1362 cb, 1363 arg, 1364 &ac->buffer_dma_cookie, 1365 &ac->num_of_cookie); 1366 switch (error) { 1367 case DDI_DMA_PARTIAL_MAP: 1368 if (ddi_dma_numwin(ac->buffer_dma_handle, 1369 &ac->num_of_win) == DDI_FAILURE) { 1370 1371 AMRDB_PRINT((CE_WARN, 1372 "Cannot get dma num win")); 1373 (void) ddi_dma_unbind_handle( 1374 ac->buffer_dma_handle); 1375 (void) ddi_dma_free_handle( 1376 &ac->buffer_dma_handle); 1377 ac->buffer_dma_handle = NULL; 1378 return (DDI_FAILURE); 1379 } 1380 ac->current_win = 0; 1381 break; 1382 1383 case DDI_DMA_MAPPED: 1384 ac->num_of_win = 1; 1385 ac->current_win = 0; 1386 break; 1387 1388 default: 1389 AMRDB_PRINT((CE_WARN, 1390 "Cannot bind buf for dma")); 1391 1392 (void) ddi_dma_free_handle( 1393 &ac->buffer_dma_handle); 1394 ac->buffer_dma_handle = NULL; 1395 return (DDI_FAILURE); 1396 } 1397 1398 ac->current_cookie = 0; 1399 1400 ac->ac_flags |= AMR_CMD_MAPPED; 1401 } else if (ac->current_cookie == AMR_LAST_COOKIE_TAG) { 1402 /* get the next window */ 1403 ac->current_win++; 1404 (void) ddi_dma_getwin(ac->buffer_dma_handle, 1405 ac->current_win, &off, &len, 1406 &ac->buffer_dma_cookie, 1407 &ac->num_of_cookie); 1408 ac->current_cookie = 0; 1409 } 1410 1411 if ((ac->num_of_cookie - ac->current_cookie) > AMR_NSEG) { 1412 amr_setup_dmamap(ac, &ac->buffer_dma_cookie, AMR_NSEG); 1413 ac->current_cookie += AMR_NSEG; 1414 } else { 1415 amr_setup_dmamap(ac, &ac->buffer_dma_cookie, 1416 ac->num_of_cookie - ac->current_cookie); 1417 ac->current_cookie = AMR_LAST_COOKIE_TAG; 1418 } 1419 1420 return (DDI_SUCCESS); 1421} 1422 1423/* 1424 * unmap the amr command, free the DMA resource 1425 */ 1426static void 1427amr_unmapcmd(struct amr_command *ac) 1428{ 1429 AMRDB_PRINT((CE_NOTE, "Amr_unmapcmd called, ac=%p", 1430 (void *)ac)); 1431 1432 /* if the command involved data at all and was mapped */ 1433 if ((ac->ac_flags & AMR_CMD_MAPPED) && 1434 ac->ac_buf && ac->buffer_dma_handle) 1435 (void) ddi_dma_unbind_handle(ac->buffer_dma_handle); 1436 1437 ac->ac_flags &= ~AMR_CMD_MAPPED; 1438} 1439 1440static int 1441amr_setup_tran(dev_info_t *dip, struct amr_softs *softp) 1442{ 1443 softp->hba_tran = scsi_hba_tran_alloc(dip, SCSI_HBA_CANSLEEP); 1444 1445 /* 1446 * hba_private always points to the amr_softs struct 1447 */ 1448 softp->hba_tran->tran_hba_private = softp; 1449 softp->hba_tran->tran_tgt_init = amr_tran_tgt_init; 1450 softp->hba_tran->tran_tgt_probe = scsi_hba_probe; 1451 softp->hba_tran->tran_start = amr_tran_start; 1452 softp->hba_tran->tran_reset = amr_tran_reset; 1453 softp->hba_tran->tran_getcap = amr_tran_getcap; 1454 softp->hba_tran->tran_setcap = amr_tran_setcap; 1455 softp->hba_tran->tran_init_pkt = amr_tran_init_pkt; 1456 softp->hba_tran->tran_destroy_pkt = amr_tran_destroy_pkt; 1457 softp->hba_tran->tran_dmafree = amr_tran_dmafree; 1458 softp->hba_tran->tran_sync_pkt = amr_tran_sync_pkt; 1459 softp->hba_tran->tran_abort = NULL; 1460 softp->hba_tran->tran_tgt_free = NULL; 1461 softp->hba_tran->tran_quiesce = NULL; 1462 softp->hba_tran->tran_unquiesce = NULL; 1463 softp->hba_tran->tran_sd = NULL; 1464 1465 if (scsi_hba_attach_setup(dip, &buffer_dma_attr, softp->hba_tran, 1466 SCSI_HBA_TRAN_CLONE) != DDI_SUCCESS) { 1467 scsi_hba_tran_free(softp->hba_tran); 1468 softp->hba_tran = NULL; 1469 return (DDI_FAILURE); 1470 } else { 1471 return (DDI_SUCCESS); 1472 } 1473} 1474 1475/*ARGSUSED*/ 1476static int 1477amr_tran_tgt_init(dev_info_t *hba_dip, dev_info_t *tgt_dip, 1478 scsi_hba_tran_t *tran, struct scsi_device *sd) 1479{ 1480 struct amr_softs *softs; 1481 ushort_t target = sd->sd_address.a_target; 1482 uchar_t lun = sd->sd_address.a_lun; 1483 1484 softs = (struct amr_softs *) 1485 (sd->sd_address.a_hba_tran->tran_hba_private); 1486 1487 if ((lun == 0) && (target < AMR_MAXLD)) 1488 if (softs->logic_drive[target].al_state != AMR_LDRV_OFFLINE) 1489 return (DDI_SUCCESS); 1490 1491 return (DDI_FAILURE); 1492} 1493 1494static int 1495amr_tran_start(struct scsi_address *ap, struct scsi_pkt *pkt) 1496{ 1497 struct amr_softs *softs; 1498 struct buf *bp = NULL; 1499 union scsi_cdb *cdbp = (union scsi_cdb *)pkt->pkt_cdbp; 1500 int ret; 1501 uint32_t capacity; 1502 struct amr_command *ac; 1503 1504 AMRDB_PRINT((CE_NOTE, "amr_tran_start, cmd=%X,target=%d,lun=%d", 1505 cdbp->scc_cmd, ap->a_target, ap->a_lun)); 1506 1507 softs = (struct amr_softs *)(ap->a_hba_tran->tran_hba_private); 1508 if ((ap->a_lun != 0) || (ap->a_target >= AMR_MAXLD) || 1509 (softs->logic_drive[ap->a_target].al_state == 1510 AMR_LDRV_OFFLINE)) { 1511 cmn_err(CE_WARN, "target or lun is not correct!"); 1512 ret = TRAN_BADPKT; 1513 return (ret); 1514 } 1515 1516 ac = (struct amr_command *)pkt->pkt_ha_private; 1517 bp = ac->ac_buf; 1518 1519 AMRDB_PRINT((CE_NOTE, "scsi cmd accepted, cmd=%X", cdbp->scc_cmd)); 1520 1521 switch (cdbp->scc_cmd) { 1522 case SCMD_READ: /* read */ 1523 case SCMD_READ_G1: /* read g1 */ 1524 case SCMD_READ_BUFFER: /* read buffer */ 1525 case SCMD_WRITE: /* write */ 1526 case SCMD_WRITE_G1: /* write g1 */ 1527 case SCMD_WRITE_BUFFER: /* write buffer */ 1528 amr_rw_command(softs, pkt, ap->a_target); 1529 1530 if (pkt->pkt_flags & FLAG_NOINTR) { 1531 (void) amr_poll_command(ac); 1532 pkt->pkt_state |= (STATE_GOT_BUS 1533 | STATE_GOT_TARGET 1534 | STATE_SENT_CMD 1535 | STATE_XFERRED_DATA); 1536 *pkt->pkt_scbp = 0; 1537 pkt->pkt_statistics |= STAT_SYNC; 1538 pkt->pkt_reason = CMD_CMPLT; 1539 } else { 1540 mutex_enter(&softs->queue_mutex); 1541 if (softs->waiting_q_head == NULL) { 1542 ac->ac_prev = NULL; 1543 ac->ac_next = NULL; 1544 softs->waiting_q_head = ac; 1545 softs->waiting_q_tail = ac; 1546 } else { 1547 ac->ac_next = NULL; 1548 ac->ac_prev = softs->waiting_q_tail; 1549 softs->waiting_q_tail->ac_next = ac; 1550 softs->waiting_q_tail = ac; 1551 } 1552 mutex_exit(&softs->queue_mutex); 1553 amr_start_waiting_queue((void *)softs); 1554 } 1555 ret = TRAN_ACCEPT; 1556 break; 1557 1558 case SCMD_INQUIRY: /* inquiry */ 1559 if (bp && bp->b_un.b_addr && bp->b_bcount) { 1560 struct scsi_inquiry inqp; 1561 uint8_t *sinq_p = (uint8_t *)&inqp; 1562 1563 bzero(&inqp, sizeof (struct scsi_inquiry)); 1564 1565 if (((char *)cdbp)[1] || ((char *)cdbp)[2]) { 1566 /* 1567 * The EVDP and pagecode is 1568 * not supported 1569 */ 1570 sinq_p[1] = 0xFF; 1571 sinq_p[2] = 0x0; 1572 } else { 1573 inqp.inq_len = AMR_INQ_ADDITIONAL_LEN; 1574 inqp.inq_ansi = AMR_INQ_ANSI_VER; 1575 inqp.inq_rdf = AMR_INQ_RESP_DATA_FORMAT; 1576 /* Enable Tag Queue */ 1577 inqp.inq_cmdque = 1; 1578 bcopy("MegaRaid", inqp.inq_vid, 1579 sizeof (inqp.inq_vid)); 1580 bcopy(softs->amr_product_info.pi_product_name, 1581 inqp.inq_pid, 1582 AMR_PRODUCT_INFO_SIZE); 1583 bcopy(softs->amr_product_info.pi_firmware_ver, 1584 inqp.inq_revision, 1585 AMR_FIRMWARE_VER_SIZE); 1586 } 1587 1588 amr_unmapcmd(ac); 1589 1590 if (bp->b_flags & (B_PHYS | B_PAGEIO)) 1591 bp_mapin(bp); 1592 bcopy(&inqp, bp->b_un.b_addr, 1593 sizeof (struct scsi_inquiry)); 1594 1595 pkt->pkt_state |= STATE_XFERRED_DATA; 1596 } 1597 pkt->pkt_reason = CMD_CMPLT; 1598 pkt->pkt_state |= (STATE_GOT_BUS 1599 | STATE_GOT_TARGET 1600 | STATE_SENT_CMD); 1601 *pkt->pkt_scbp = 0; 1602 ret = TRAN_ACCEPT; 1603 if (!(pkt->pkt_flags & FLAG_NOINTR)) 1604 (*pkt->pkt_comp)(pkt); 1605 break; 1606 1607 case SCMD_READ_CAPACITY: /* read capacity */ 1608 if (bp && bp->b_un.b_addr && bp->b_bcount) { 1609 struct scsi_capacity cp; 1610 1611 capacity = softs->logic_drive[ap->a_target].al_size - 1; 1612 cp.capacity = BE_32(capacity); 1613 cp.lbasize = BE_32(512); 1614 1615 amr_unmapcmd(ac); 1616 1617 if (bp->b_flags & (B_PHYS | B_PAGEIO)) 1618 bp_mapin(bp); 1619 bcopy(&cp, bp->b_un.b_addr, 8); 1620 } 1621 pkt->pkt_reason = CMD_CMPLT; 1622 pkt->pkt_state |= (STATE_GOT_BUS 1623 | STATE_GOT_TARGET 1624 | STATE_SENT_CMD 1625 | STATE_XFERRED_DATA); 1626 *pkt->pkt_scbp = 0; 1627 ret = TRAN_ACCEPT; 1628 if (!(pkt->pkt_flags & FLAG_NOINTR)) 1629 (*pkt->pkt_comp)(pkt); 1630 break; 1631 1632 case SCMD_MODE_SENSE: /* mode sense */ 1633 case SCMD_MODE_SENSE_G1: /* mode sense g1 */ 1634 amr_unmapcmd(ac); 1635 1636 capacity = softs->logic_drive[ap->a_target].al_size - 1; 1637 amr_mode_sense(cdbp, bp, capacity); 1638 1639 pkt->pkt_reason = CMD_CMPLT; 1640 pkt->pkt_state |= (STATE_GOT_BUS 1641 | STATE_GOT_TARGET 1642 | STATE_SENT_CMD 1643 | STATE_XFERRED_DATA); 1644 *pkt->pkt_scbp = 0; 1645 ret = TRAN_ACCEPT; 1646 if (!(pkt->pkt_flags & FLAG_NOINTR)) 1647 (*pkt->pkt_comp)(pkt); 1648 break; 1649 1650 case SCMD_TEST_UNIT_READY: /* test unit ready */ 1651 case SCMD_REQUEST_SENSE: /* request sense */ 1652 case SCMD_FORMAT: /* format */ 1653 case SCMD_START_STOP: /* start stop */ 1654 case SCMD_SYNCHRONIZE_CACHE: /* synchronize cache */ 1655 if (bp && bp->b_un.b_addr && bp->b_bcount) { 1656 amr_unmapcmd(ac); 1657 1658 if (bp->b_flags & (B_PHYS | B_PAGEIO)) 1659 bp_mapin(bp); 1660 bzero(bp->b_un.b_addr, bp->b_bcount); 1661 1662 pkt->pkt_state |= STATE_XFERRED_DATA; 1663 } 1664 pkt->pkt_reason = CMD_CMPLT; 1665 pkt->pkt_state |= (STATE_GOT_BUS 1666 | STATE_GOT_TARGET 1667 | STATE_SENT_CMD); 1668 ret = TRAN_ACCEPT; 1669 *pkt->pkt_scbp = 0; 1670 if (!(pkt->pkt_flags & FLAG_NOINTR)) 1671 (*pkt->pkt_comp)(pkt); 1672 break; 1673 1674 default: /* any other commands */ 1675 amr_unmapcmd(ac); 1676 pkt->pkt_reason = CMD_INCOMPLETE; 1677 pkt->pkt_state = (STATE_GOT_BUS 1678 | STATE_GOT_TARGET 1679 | STATE_SENT_CMD 1680 | STATE_GOT_STATUS 1681 | STATE_ARQ_DONE); 1682 ret = TRAN_ACCEPT; 1683 *pkt->pkt_scbp = 0; 1684 amr_set_arq_data(pkt, KEY_ILLEGAL_REQUEST); 1685 if (!(pkt->pkt_flags & FLAG_NOINTR)) 1686 (*pkt->pkt_comp)(pkt); 1687 break; 1688 } 1689 1690 return (ret); 1691} 1692 1693/* 1694 * tran_reset() will reset the bus/target/adapter to support the fault recovery 1695 * functionality according to the "level" in interface. However, we got the 1696 * confirmation from LSI that these HBA cards does not support any commands to 1697 * reset bus/target/adapter/channel. 1698 * 1699 * If the tran_reset() return a FAILURE to the sd, the system will not 1700 * continue to dump the core. But core dump is an crucial method to analyze 1701 * problems in panic. Now we adopt a work around solution, that is to return 1702 * a fake SUCCESS to sd during panic, which will force the system continue 1703 * to dump core though the core may have problems in some situtation because 1704 * some on-the-fly commands will continue DMAing data to the memory. 1705 * In addition, the work around core dump method may not be performed 1706 * successfully if the panic is caused by the HBA itself. So the work around 1707 * solution is not a good example for the implementation of tran_reset(), 1708 * the most reasonable approach should send a reset command to the adapter. 1709 */ 1710/*ARGSUSED*/ 1711static int 1712amr_tran_reset(struct scsi_address *ap, int level) 1713{ 1714 struct amr_softs *softs; 1715 volatile uint32_t done_flag; 1716 1717 if (ddi_in_panic()) { 1718 softs = (struct amr_softs *)(ap->a_hba_tran->tran_hba_private); 1719 1720 /* Acknowledge the card if there are any significant commands */ 1721 while (softs->amr_busyslots > 0) { 1722 AMR_DELAY((softs->mailbox->mb_busy == 0), 1723 AMR_RETRYCOUNT, done_flag); 1724 if (!done_flag) { 1725 /* 1726 * command not completed, indicate the 1727 * problem and continue get ac 1728 */ 1729 cmn_err(CE_WARN, 1730 "AMR command is not completed"); 1731 return (0); 1732 } 1733 1734 AMR_QPUT_IDB(softs, softs->mbox_phyaddr | AMR_QIDB_ACK); 1735 1736 /* wait for the acknowledge from hardware */ 1737 AMR_BUSYWAIT(!(AMR_QGET_IDB(softs) & AMR_QIDB_ACK), 1738 AMR_RETRYCOUNT, done_flag); 1739 if (!done_flag) { 1740 /* 1741 * command is not completed, return from the 1742 * current interrupt and wait for the next one 1743 */ 1744 cmn_err(CE_WARN, "No answer from the hardware"); 1745 1746 mutex_exit(&softs->cmd_mutex); 1747 return (0); 1748 } 1749 1750 softs->amr_busyslots -= softs->mailbox->mb_nstatus; 1751 } 1752 1753 /* flush the controllor */ 1754 (void) amr_flush(softs); 1755 1756 /* 1757 * If the system is in panic, the tran_reset() will return a 1758 * fake SUCCESS to sd, then the system would continue dump the 1759 * core by poll commands. This is a work around for dumping 1760 * core in panic. 1761 * 1762 * Note: Some on-the-fly command will continue DMAing data to 1763 * the memory when the core is dumping, which may cause 1764 * some flaws in the dumped core file, so a cmn_err() 1765 * will be printed out to warn users. However, for most 1766 * cases, the core file will be fine. 1767 */ 1768 cmn_err(CE_WARN, "This system contains a SCSI HBA card/driver " 1769 "that doesn't support software reset. This " 1770 "means that memory being used by the HBA for " 1771 "DMA based reads could have been updated after " 1772 "we panic'd."); 1773 return (1); 1774 } else { 1775 /* return failure to sd */ 1776 return (0); 1777 } 1778} 1779 1780/*ARGSUSED*/ 1781static int 1782amr_tran_getcap(struct scsi_address *ap, char *cap, int whom) 1783{ 1784 struct amr_softs *softs; 1785 1786 /* 1787 * We don't allow inquiring about capabilities for other targets 1788 */ 1789 if (cap == NULL || whom == 0) 1790 return (-1); 1791 1792 softs = ((struct amr_softs *)(ap->a_hba_tran)->tran_hba_private); 1793 1794 switch (scsi_hba_lookup_capstr(cap)) { 1795 case SCSI_CAP_ARQ: 1796 return (1); 1797 case SCSI_CAP_GEOMETRY: 1798 return ((AMR_DEFAULT_HEADS << 16) | AMR_DEFAULT_CYLINDERS); 1799 case SCSI_CAP_SECTOR_SIZE: 1800 return (AMR_DEFAULT_SECTORS); 1801 case SCSI_CAP_TOTAL_SECTORS: 1802 /* number of sectors */ 1803 return (softs->logic_drive[ap->a_target].al_size); 1804 case SCSI_CAP_UNTAGGED_QING: 1805 case SCSI_CAP_TAGGED_QING: 1806 return (1); 1807 default: 1808 return (-1); 1809 } 1810} 1811 1812/*ARGSUSED*/ 1813static int 1814amr_tran_setcap(struct scsi_address *ap, char *cap, int value, 1815 int whom) 1816{ 1817 /* 1818 * We don't allow setting capabilities for other targets 1819 */ 1820 if (cap == NULL || whom == 0) { 1821 AMRDB_PRINT((CE_NOTE, 1822 "Set Cap not supported, string = %s, whom=%d", 1823 cap, whom)); 1824 return (-1); 1825 } 1826 1827 switch (scsi_hba_lookup_capstr(cap)) { 1828 case SCSI_CAP_ARQ: 1829 return (1); 1830 case SCSI_CAP_TOTAL_SECTORS: 1831 return (1); 1832 case SCSI_CAP_SECTOR_SIZE: 1833 return (1); 1834 case SCSI_CAP_UNTAGGED_QING: 1835 case SCSI_CAP_TAGGED_QING: 1836 return ((value == 1) ? 1 : 0); 1837 default: 1838 return (0); 1839 } 1840} 1841 1842static struct scsi_pkt * 1843amr_tran_init_pkt(struct scsi_address *ap, 1844 struct scsi_pkt *pkt, struct buf *bp, int cmdlen, int statuslen, 1845 int tgtlen, int flags, int (*callback)(), caddr_t arg) 1846{ 1847 struct amr_softs *softs; 1848 struct amr_command *ac; 1849 uint32_t slen; 1850 1851 softs = (struct amr_softs *)(ap->a_hba_tran->tran_hba_private); 1852 1853 if ((ap->a_lun != 0)||(ap->a_target >= AMR_MAXLD)|| 1854 (softs->logic_drive[ap->a_target].al_state == 1855 AMR_LDRV_OFFLINE)) { 1856 return (NULL); 1857 } 1858 1859 if (pkt == NULL) { 1860 /* force auto request sense */ 1861 slen = MAX(statuslen, sizeof (struct scsi_arq_status)); 1862 1863 pkt = scsi_hba_pkt_alloc(softs->dev_info_p, ap, cmdlen, 1864 slen, tgtlen, sizeof (struct amr_command), 1865 callback, arg); 1866 if (pkt == NULL) { 1867 AMRDB_PRINT((CE_WARN, "scsi_hba_pkt_alloc failed")); 1868 return (NULL); 1869 } 1870 pkt->pkt_address = *ap; 1871 pkt->pkt_comp = (void (*)())NULL; 1872 pkt->pkt_time = 0; 1873 pkt->pkt_resid = 0; 1874 pkt->pkt_statistics = 0; 1875 pkt->pkt_reason = 0; 1876 1877 ac = (struct amr_command *)pkt->pkt_ha_private; 1878 ac->ac_buf = bp; 1879 ac->cmdlen = cmdlen; 1880 ac->ac_softs = softs; 1881 ac->pkt = pkt; 1882 ac->ac_flags &= ~AMR_CMD_GOT_SLOT; 1883 ac->ac_flags &= ~AMR_CMD_BUSY; 1884 1885 if ((bp == NULL) || (bp->b_bcount == 0)) { 1886 return (pkt); 1887 } 1888 1889 if (ddi_dma_alloc_handle(softs->dev_info_p, &buffer_dma_attr, 1890 DDI_DMA_SLEEP, NULL, 1891 &ac->buffer_dma_handle) != DDI_SUCCESS) { 1892 1893 AMRDB_PRINT((CE_WARN, 1894 "Cannot allocate buffer DMA tag")); 1895 scsi_hba_pkt_free(ap, pkt); 1896 return (NULL); 1897 1898 } 1899 1900 } else { 1901 if ((bp == NULL) || (bp->b_bcount == 0)) { 1902 return (pkt); 1903 } 1904 ac = (struct amr_command *)pkt->pkt_ha_private; 1905 } 1906 1907 ASSERT(ac != NULL); 1908 1909 if (bp->b_flags & B_READ) { 1910 ac->ac_flags |= AMR_CMD_DATAOUT; 1911 } else { 1912 ac->ac_flags |= AMR_CMD_DATAIN; 1913 } 1914 1915 if (flags & PKT_CONSISTENT) { 1916 ac->ac_flags |= AMR_CMD_PKT_CONSISTENT; 1917 } 1918 1919 if (flags & PKT_DMA_PARTIAL) { 1920 ac->ac_flags |= AMR_CMD_PKT_DMA_PARTIAL; 1921 } 1922 1923 if (amr_mapcmd(ac, callback, arg) != DDI_SUCCESS) { 1924 scsi_hba_pkt_free(ap, pkt); 1925 return (NULL); 1926 } 1927 1928 pkt->pkt_resid = bp->b_bcount - ac->data_transfered; 1929 1930 AMRDB_PRINT((CE_NOTE, 1931 "init pkt, pkt_resid=%d, b_bcount=%d, data_transfered=%d", 1932 (uint32_t)pkt->pkt_resid, (uint32_t)bp->b_bcount, 1933 ac->data_transfered)); 1934 1935 ASSERT(pkt->pkt_resid >= 0); 1936 1937 return (pkt); 1938} 1939 1940static void 1941amr_tran_destroy_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) 1942{ 1943 struct amr_command *ac = (struct amr_command *)pkt->pkt_ha_private; 1944 1945 amr_unmapcmd(ac); 1946 1947 if (ac->buffer_dma_handle) { 1948 (void) ddi_dma_free_handle(&ac->buffer_dma_handle); 1949 ac->buffer_dma_handle = NULL; 1950 } 1951 1952 scsi_hba_pkt_free(ap, pkt); 1953 AMRDB_PRINT((CE_NOTE, "Destroy pkt called")); 1954} 1955 1956/*ARGSUSED*/ 1957static void 1958amr_tran_sync_pkt(struct scsi_address *ap, struct scsi_pkt *pkt) 1959{ 1960 struct amr_command *ac = (struct amr_command *)pkt->pkt_ha_private; 1961 1962 if (ac->buffer_dma_handle) { 1963 (void) ddi_dma_sync(ac->buffer_dma_handle, 0, 0, 1964 (ac->ac_flags & AMR_CMD_DATAIN) ? 1965 DDI_DMA_SYNC_FORDEV : DDI_DMA_SYNC_FORCPU); 1966 } 1967} 1968 1969/*ARGSUSED*/ 1970static void 1971amr_tran_dmafree(struct scsi_address *ap, struct scsi_pkt *pkt) 1972{ 1973 struct amr_command *ac = (struct amr_command *)pkt->pkt_ha_private; 1974 1975 if (ac->ac_flags & AMR_CMD_MAPPED) { 1976 (void) ddi_dma_unbind_handle(ac->buffer_dma_handle); 1977 (void) ddi_dma_free_handle(&ac->buffer_dma_handle); 1978 ac->buffer_dma_handle = NULL; 1979 ac->ac_flags &= ~AMR_CMD_MAPPED; 1980 } 1981 1982} 1983 1984/*ARGSUSED*/ 1985static void 1986amr_rw_command(struct amr_softs *softs, struct scsi_pkt *pkt, int target) 1987{ 1988 struct amr_command *ac = (struct amr_command *)pkt->pkt_ha_private; 1989 union scsi_cdb *cdbp = (union scsi_cdb *)pkt->pkt_cdbp; 1990 uint8_t cmd; 1991 1992 if (ac->ac_flags & AMR_CMD_DATAOUT) { 1993 cmd = AMR_CMD_LREAD; 1994 } else { 1995 cmd = AMR_CMD_LWRITE; 1996 } 1997 1998 ac->mailbox.mb_command = cmd; 1999 ac->mailbox.mb_blkcount = 2000 (ac->transfer_size + AMR_BLKSIZE - 1)/AMR_BLKSIZE; 2001 ac->mailbox.mb_lba = (ac->cmdlen == 10) ? 2002 GETG1ADDR(cdbp) : GETG0ADDR(cdbp); 2003 ac->mailbox.mb_drive = (uint8_t)target; 2004} 2005 2006static void 2007amr_mode_sense(union scsi_cdb *cdbp, struct buf *bp, unsigned int capacity) 2008{ 2009 uchar_t pagecode; 2010 struct mode_format *page3p; 2011 struct mode_geometry *page4p; 2012 struct mode_header *headerp; 2013 uint32_t ncyl; 2014 2015 if (!(bp && bp->b_un.b_addr && bp->b_bcount)) 2016 return; 2017 2018 if (bp->b_flags & (B_PHYS | B_PAGEIO)) 2019 bp_mapin(bp); 2020 2021 pagecode = cdbp->cdb_un.sg.scsi[0]; 2022 switch (pagecode) { 2023 case SD_MODE_SENSE_PAGE3_CODE: 2024 headerp = (struct mode_header *)(bp->b_un.b_addr); 2025 headerp->bdesc_length = MODE_BLK_DESC_LENGTH; 2026 2027 page3p = (struct mode_format *)((caddr_t)headerp + 2028 MODE_HEADER_LENGTH + MODE_BLK_DESC_LENGTH); 2029 page3p->mode_page.code = BE_8(SD_MODE_SENSE_PAGE3_CODE); 2030 page3p->mode_page.length = BE_8(sizeof (struct mode_format)); 2031 page3p->data_bytes_sect = BE_16(AMR_DEFAULT_SECTORS); 2032 page3p->sect_track = BE_16(AMR_DEFAULT_CYLINDERS); 2033 2034 return; 2035 2036 case SD_MODE_SENSE_PAGE4_CODE: 2037 headerp = (struct mode_header *)(bp->b_un.b_addr); 2038 headerp->bdesc_length = MODE_BLK_DESC_LENGTH; 2039 2040 page4p = (struct mode_geometry *)((caddr_t)headerp + 2041 MODE_HEADER_LENGTH + MODE_BLK_DESC_LENGTH); 2042 page4p->mode_page.code = BE_8(SD_MODE_SENSE_PAGE4_CODE); 2043 page4p->mode_page.length = BE_8(sizeof (struct mode_geometry)); 2044 page4p->heads = BE_8(AMR_DEFAULT_HEADS); 2045 page4p->rpm = BE_16(AMR_DEFAULT_ROTATIONS); 2046 2047 ncyl = capacity / (AMR_DEFAULT_HEADS*AMR_DEFAULT_CYLINDERS); 2048 page4p->cyl_lb = BE_8(ncyl & 0xff); 2049 page4p->cyl_mb = BE_8((ncyl >> 8) & 0xff); 2050 page4p->cyl_ub = BE_8((ncyl >> 16) & 0xff); 2051 2052 return; 2053 default: 2054 bzero(bp->b_un.b_addr, bp->b_bcount); 2055 return; 2056 } 2057} 2058 2059static void 2060amr_set_arq_data(struct scsi_pkt *pkt, uchar_t key) 2061{ 2062 struct scsi_arq_status *arqstat; 2063 2064 arqstat = (struct scsi_arq_status *)(pkt->pkt_scbp); 2065 arqstat->sts_status.sts_chk = 1; /* CHECK CONDITION */ 2066 arqstat->sts_rqpkt_reason = CMD_CMPLT; 2067 arqstat->sts_rqpkt_resid = 0; 2068 arqstat->sts_rqpkt_state = STATE_GOT_BUS | STATE_GOT_TARGET | 2069 STATE_SENT_CMD | STATE_XFERRED_DATA; 2070 arqstat->sts_rqpkt_statistics = 0; 2071 arqstat->sts_sensedata.es_valid = 1; 2072 arqstat->sts_sensedata.es_class = CLASS_EXTENDED_SENSE; 2073 arqstat->sts_sensedata.es_key = key; 2074} 2075 2076static void 2077amr_start_waiting_queue(void *softp) 2078{ 2079 uint32_t slot; 2080 struct amr_command *ac; 2081 volatile uint32_t done_flag; 2082 struct amr_softs *softs = (struct amr_softs *)softp; 2083 2084 /* only one command allowed at the same time */ 2085 mutex_enter(&softs->queue_mutex); 2086 mutex_enter(&softs->cmd_mutex); 2087 2088 while ((ac = softs->waiting_q_head) != NULL) { 2089 /* 2090 * Find an available slot, the last slot is 2091 * occupied by poll I/O command. 2092 */ 2093 for (slot = 0; slot < (softs->sg_max_count - 1); slot++) { 2094 if (softs->busycmd[slot] == NULL) { 2095 if (AMR_QGET_IDB(softs) & AMR_QIDB_SUBMIT) { 2096 /* 2097 * only one command allowed at the 2098 * same time 2099 */ 2100 mutex_exit(&softs->cmd_mutex); 2101 mutex_exit(&softs->queue_mutex); 2102 return; 2103 } 2104 2105 ac->ac_timestamp = ddi_get_time(); 2106 2107 if (!(ac->ac_flags & AMR_CMD_GOT_SLOT)) { 2108 2109 softs->busycmd[slot] = ac; 2110 ac->ac_slot = slot; 2111 softs->amr_busyslots++; 2112 2113 bcopy(ac->sgtable, 2114 softs->sg_items[slot].sg_table, 2115 sizeof (struct amr_sgentry) * 2116 AMR_NSEG); 2117 2118 (void) ddi_dma_sync( 2119 softs->sg_items[slot].sg_handle, 2120 0, 0, DDI_DMA_SYNC_FORDEV); 2121 2122 ac->mailbox.mb_physaddr = 2123 softs->sg_items[slot].sg_phyaddr; 2124 } 2125 2126 /* take the cmd from the queue */ 2127 softs->waiting_q_head = ac->ac_next; 2128 2129 ac->mailbox.mb_ident = ac->ac_slot + 1; 2130 ac->mailbox.mb_busy = 1; 2131 ac->ac_next = NULL; 2132 ac->ac_prev = NULL; 2133 ac->ac_flags |= AMR_CMD_GOT_SLOT; 2134 2135 /* clear the poll/ack fields in the mailbox */ 2136 softs->mailbox->mb_poll = 0; 2137 softs->mailbox->mb_ack = 0; 2138 2139 AMR_DELAY((softs->mailbox->mb_busy == 0), 2140 AMR_RETRYCOUNT, done_flag); 2141 if (!done_flag) { 2142 /* 2143 * command not completed, indicate the 2144 * problem and continue get ac 2145 */ 2146 cmn_err(CE_WARN, 2147 "AMR command is not completed"); 2148 break; 2149 } 2150 2151 bcopy(&ac->mailbox, (void *)softs->mailbox, 2152 AMR_MBOX_CMDSIZE); 2153 ac->ac_flags |= AMR_CMD_BUSY; 2154 2155 (void) ddi_dma_sync(softs->mbox_dma_handle, 2156 0, 0, DDI_DMA_SYNC_FORDEV); 2157 2158 AMR_QPUT_IDB(softs, 2159 softs->mbox_phyaddr | AMR_QIDB_SUBMIT); 2160 2161 /* 2162 * current ac is submitted 2163 * so quit 'for-loop' to get next ac 2164 */ 2165 break; 2166 } 2167 } 2168 2169 /* no slot, finish our task */ 2170 if (slot == softs->maxio) 2171 break; 2172 } 2173 2174 /* only one command allowed at the same time */ 2175 mutex_exit(&softs->cmd_mutex); 2176 mutex_exit(&softs->queue_mutex); 2177} 2178 2179static void 2180amr_done(struct amr_softs *softs) 2181{ 2182 2183 uint32_t i, idx; 2184 volatile uint32_t done_flag; 2185 struct amr_mailbox *mbox, mbsave; 2186 struct amr_command *ac, *head, *tail; 2187 2188 head = tail = NULL; 2189 2190 AMR_QPUT_ODB(softs, AMR_QODB_READY); 2191 2192 /* acknowledge interrupt */ 2193 (void) AMR_QGET_ODB(softs); 2194 2195 mutex_enter(&softs->cmd_mutex); 2196 2197 if (softs->mailbox->mb_nstatus != 0) { 2198 (void) ddi_dma_sync(softs->mbox_dma_handle, 2199 0, 0, DDI_DMA_SYNC_FORCPU); 2200 2201 /* save mailbox, which contains a list of completed commands */ 2202 bcopy((void *)(uintptr_t)(volatile void *)softs->mailbox, 2203 &mbsave, sizeof (mbsave)); 2204 2205 mbox = &mbsave; 2206 2207 AMR_QPUT_IDB(softs, softs->mbox_phyaddr | AMR_QIDB_ACK); 2208 2209 /* wait for the acknowledge from hardware */ 2210 AMR_BUSYWAIT(!(AMR_QGET_IDB(softs) & AMR_QIDB_ACK), 2211 AMR_RETRYCOUNT, done_flag); 2212 if (!done_flag) { 2213 /* 2214 * command is not completed, return from the current 2215 * interrupt and wait for the next one 2216 */ 2217 cmn_err(CE_WARN, "No answer from the hardware"); 2218 2219 mutex_exit(&softs->cmd_mutex); 2220 return; 2221 } 2222 2223 for (i = 0; i < mbox->mb_nstatus; i++) { 2224 idx = mbox->mb_completed[i] - 1; 2225 ac = softs->busycmd[idx]; 2226 2227 if (ac != NULL) { 2228 /* pull the command from the busy index */ 2229 softs->busycmd[idx] = NULL; 2230 if (softs->amr_busyslots > 0) 2231 softs->amr_busyslots--; 2232 if (softs->amr_busyslots == 0) 2233 cv_broadcast(&softs->cmd_cv); 2234 2235 ac->ac_flags &= ~AMR_CMD_BUSY; 2236 ac->ac_flags &= ~AMR_CMD_GOT_SLOT; 2237 ac->ac_status = mbox->mb_status; 2238 2239 /* enqueue here */ 2240 if (head) { 2241 tail->ac_next = ac; 2242 tail = ac; 2243 tail->ac_next = NULL; 2244 } else { 2245 tail = head = ac; 2246 ac->ac_next = NULL; 2247 } 2248 } else { 2249 AMRDB_PRINT((CE_WARN, 2250 "ac in mailbox is NULL!")); 2251 } 2252 } 2253 } else { 2254 AMRDB_PRINT((CE_WARN, "mailbox is not ready for copy out!")); 2255 } 2256 2257 mutex_exit(&softs->cmd_mutex); 2258 2259 if (head != NULL) { 2260 amr_call_pkt_comp(head); 2261 } 2262 2263 /* dispatch a thread to process the pending I/O if there is any */ 2264 if ((ddi_taskq_dispatch(softs->amr_taskq, amr_start_waiting_queue, 2265 (void *)softs, DDI_NOSLEEP)) != DDI_SUCCESS) { 2266 cmn_err(CE_WARN, "No memory available to dispatch taskq"); 2267 } 2268} 2269 2270static void 2271amr_call_pkt_comp(register struct amr_command *head) 2272{ 2273 register struct scsi_pkt *pkt; 2274 register struct amr_command *ac, *localhead; 2275 2276 localhead = head; 2277 2278 while (localhead) { 2279 ac = localhead; 2280 localhead = ac->ac_next; 2281 ac->ac_next = NULL; 2282 2283 pkt = ac->pkt; 2284 *pkt->pkt_scbp = 0; 2285 2286 if (ac->ac_status == AMR_STATUS_SUCCESS) { 2287 pkt->pkt_state |= (STATE_GOT_BUS 2288 | STATE_GOT_TARGET 2289 | STATE_SENT_CMD 2290 | STATE_XFERRED_DATA); 2291 pkt->pkt_reason = CMD_CMPLT; 2292 } else { 2293 pkt->pkt_state |= STATE_GOT_BUS 2294 | STATE_ARQ_DONE; 2295 pkt->pkt_reason = CMD_INCOMPLETE; 2296 amr_set_arq_data(pkt, KEY_HARDWARE_ERROR); 2297 } 2298 2299 if (!(pkt->pkt_flags & FLAG_NOINTR) && 2300 pkt->pkt_comp) { 2301 (*pkt->pkt_comp)(pkt); 2302 } 2303 } 2304} 2305