mpt_pci.c revision 155521
1/*- 2 * PCI specific probe and attach routines for LSI Fusion Adapters 3 * FreeBSD Version. 4 * 5 * Copyright (c) 2000, 2001 by Greg Ansley 6 * Partially derived from Matt Jacob's ISP driver. 7 * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002 by Matthew Jacob 8 * Feral Software 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice immediately at the beginning of the file, without modification, 16 * this list of conditions, and the following disclaimer. 17 * 2. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32/* 33 * Copyright (c) 2004, Avid Technology, Inc. and its contributors. 34 * Copyright (c) 2005, WHEEL Sp. z o.o. 35 * Copyright (c) 2004, 2005 Justin T. Gibbs 36 * All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions are 40 * met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 44 * substantially similar to the "NO WARRANTY" disclaimer below 45 * ("Disclaimer") and any redistribution must be conditioned upon including 46 * a substantially similar Disclaimer requirement for further binary 47 * redistribution. 48 * 3. Neither the names of the above listed copyright holders nor the names 49 * of any contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 53 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 56 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT 62 * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65#include <sys/cdefs.h> 66__FBSDID("$FreeBSD: head/sys/dev/mpt/mpt_pci.c 155521 2006-02-11 01:35:29Z mjacob $"); 67 68#include <dev/mpt/mpt.h> 69#include <dev/mpt/mpt_cam.h> 70#include <dev/mpt/mpt_raid.h> 71 72 73#ifndef PCI_VENDOR_LSI 74#define PCI_VENDOR_LSI 0x1000 75#endif 76 77#ifndef PCI_PRODUCT_LSI_FC909 78#define PCI_PRODUCT_LSI_FC909 0x0620 79#endif 80 81#ifndef PCI_PRODUCT_LSI_FC909A 82#define PCI_PRODUCT_LSI_FC909A 0x0621 83#endif 84 85#ifndef PCI_PRODUCT_LSI_FC919 86#define PCI_PRODUCT_LSI_FC919 0x0624 87#endif 88 89#ifndef PCI_PRODUCT_LSI_FC929 90#define PCI_PRODUCT_LSI_FC929 0x0622 91#endif 92 93#ifndef PCI_PRODUCT_LSI_FC929X 94#define PCI_PRODUCT_LSI_FC929X 0x0626 95#endif 96 97#ifndef PCI_PRODUCT_LSI_1030 98#define PCI_PRODUCT_LSI_1030 0x0030 99#endif 100 101#ifndef PCI_PRODUCT_LSI_SAS1064 102#define PCI_PRODUCT_LSI_SAS1064 0x0050 103#endif 104 105#ifndef PCI_PRODUCT_LSI_SAS1064A 106#define PCI_PRODUCT_LSI_SAS1064A 0x005C 107#endif 108 109#ifndef PCI_PRODUCT_LSI_SAS1064E 110#define PCI_PRODUCT_LSI_SAS1064E 0x0056 111#endif 112 113#ifndef PCI_PRODUCT_LSI_SAS1066 114#define PCI_PRODUCT_LSI_SAS1066 0x005E 115#endif 116 117#ifndef PCI_PRODUCT_LSI_SAS1066E 118#define PCI_PRODUCT_LSI_SAS1066E 0x005A 119#endif 120 121#ifndef PCI_PRODUCT_LSI_SAS1068 122#define PCI_PRODUCT_LSI_SAS1068 0x0054 123#endif 124 125#ifndef PCI_PRODUCT_LSI_SAS1068E 126#define PCI_PRODUCT_LSI_SAS1068E 0x0058 127#endif 128 129#ifndef PCI_PRODUCT_LSI_SAS1078 130#define PCI_PRODUCT_LSI_SAS1078 0x0060 131#endif 132 133#ifndef PCIM_CMD_SERRESPEN 134#define PCIM_CMD_SERRESPEN 0x0100 135#endif 136 137 138#define MPT_IO_BAR 0 139#define MPT_MEM_BAR 1 140 141static int mpt_pci_probe(device_t); 142static int mpt_pci_attach(device_t); 143static void mpt_free_bus_resources(struct mpt_softc *mpt); 144static int mpt_pci_detach(device_t); 145static int mpt_pci_shutdown(device_t); 146static int mpt_dma_mem_alloc(struct mpt_softc *mpt); 147static void mpt_dma_mem_free(struct mpt_softc *mpt); 148static void mpt_read_config_regs(struct mpt_softc *mpt); 149static void mpt_pci_intr(void *); 150 151static device_method_t mpt_methods[] = { 152 /* Device interface */ 153 DEVMETHOD(device_probe, mpt_pci_probe), 154 DEVMETHOD(device_attach, mpt_pci_attach), 155 DEVMETHOD(device_detach, mpt_pci_detach), 156 DEVMETHOD(device_shutdown, mpt_pci_shutdown), 157 { 0, 0 } 158}; 159 160static driver_t mpt_driver = { 161 "mpt", mpt_methods, sizeof(struct mpt_softc) 162}; 163static devclass_t mpt_devclass; 164DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0); 165MODULE_VERSION(mpt, 1); 166 167static int 168mpt_pci_probe(device_t dev) 169{ 170 char *desc; 171 172 if (pci_get_vendor(dev) != PCI_VENDOR_LSI) 173 return (ENXIO); 174 175 switch ((pci_get_device(dev) & ~1)) { 176 case PCI_PRODUCT_LSI_FC909: 177 desc = "LSILogic FC909 FC Adapter"; 178 break; 179 case PCI_PRODUCT_LSI_FC909A: 180 desc = "LSILogic FC909A FC Adapter"; 181 break; 182 case PCI_PRODUCT_LSI_FC919: 183 desc = "LSILogic FC919 FC Adapter"; 184 break; 185 case PCI_PRODUCT_LSI_FC929: 186 desc = "LSILogic FC929 FC Adapter"; 187 break; 188 case PCI_PRODUCT_LSI_FC929X: 189 desc = "LSILogic FC929X FC Adapter"; 190 break; 191 case PCI_PRODUCT_LSI_1030: 192 desc = "LSILogic 1030 Ultra4 Adapter"; 193 break; 194 case PCI_PRODUCT_LSI_SAS1064: 195 case PCI_PRODUCT_LSI_SAS1064A: 196 case PCI_PRODUCT_LSI_SAS1064E: 197 case PCI_PRODUCT_LSI_SAS1066: 198 case PCI_PRODUCT_LSI_SAS1066E: 199 case PCI_PRODUCT_LSI_SAS1068: 200 case PCI_PRODUCT_LSI_SAS1068E: 201 case PCI_PRODUCT_LSI_SAS1078: 202 desc = "LSILogic SAS Adapter"; 203 break; 204 default: 205 return (ENXIO); 206 } 207 208 device_set_desc(dev, desc); 209 return (0); 210} 211 212#ifdef RELENG_4 213static void 214mpt_set_options(struct mpt_softc *mpt) 215{ 216 int bitmap; 217 218 bitmap = 0; 219 if (getenv_int("mpt_disable", &bitmap)) { 220 if (bitmap & (1 << mpt->unit)) { 221 mpt->disabled = 1; 222 } 223 } 224 225 bitmap = 0; 226 if (getenv_int("mpt_debug", &bitmap)) { 227 if (bitmap & (1 << mpt->unit)) { 228 mpt->verbose = MPT_PRT_DEBUG; 229 } 230 } 231 232} 233#else 234static void 235mpt_set_options(struct mpt_softc *mpt) 236{ 237 int tval; 238 239 tval = 0; 240 if (resource_int_value(device_get_name(mpt->dev), 241 device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) { 242 mpt->disabled = 1; 243 } 244 tval = 0; 245 if (resource_int_value(device_get_name(mpt->dev), 246 device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) { 247 mpt->verbose += tval; 248 } 249} 250#endif 251 252 253static void 254mpt_link_peer(struct mpt_softc *mpt) 255{ 256 struct mpt_softc *mpt2; 257 258 if (mpt->unit == 0) 259 return; 260 261 /* 262 * XXX: depends on probe order 263 */ 264 mpt2 = (struct mpt_softc *)devclass_get_softc(mpt_devclass,mpt->unit-1); 265 266 if (mpt2 == NULL) { 267 return; 268 } 269 if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) { 270 return; 271 } 272 if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) { 273 return; 274 } 275 mpt->mpt2 = mpt2; 276 mpt2->mpt2 = mpt; 277 if (mpt->verbose >= MPT_PRT_DEBUG) { 278 mpt_prt(mpt, "linking with peer (mpt%d)\n", 279 device_get_unit(mpt2->dev)); 280 } 281} 282 283 284static int 285mpt_pci_attach(device_t dev) 286{ 287 struct mpt_softc *mpt; 288 int iqd; 289 uint32_t data, cmd; 290 291 /* Allocate the softc structure */ 292 mpt = (struct mpt_softc*)device_get_softc(dev); 293 if (mpt == NULL) { 294 device_printf(dev, "cannot allocate softc\n"); 295 return (ENOMEM); 296 } 297 bzero(mpt, sizeof(struct mpt_softc)); 298 switch ((pci_get_device(dev) & ~1)) { 299 case PCI_PRODUCT_LSI_FC909: 300 case PCI_PRODUCT_LSI_FC909A: 301 case PCI_PRODUCT_LSI_FC919: 302 case PCI_PRODUCT_LSI_FC929: 303 mpt->is_fc = 1; 304 break; 305 case PCI_PRODUCT_LSI_SAS1064: 306 case PCI_PRODUCT_LSI_SAS1064A: 307 case PCI_PRODUCT_LSI_SAS1064E: 308 case PCI_PRODUCT_LSI_SAS1066: 309 case PCI_PRODUCT_LSI_SAS1066E: 310 case PCI_PRODUCT_LSI_SAS1068: 311 case PCI_PRODUCT_LSI_SAS1068E: 312 case PCI_PRODUCT_LSI_SAS1078: 313 mpt->is_sas = 1; 314 break; 315 default: 316 break; 317 } 318 mpt->dev = dev; 319 mpt->unit = device_get_unit(dev); 320 mpt->raid_resync_rate = MPT_RAID_RESYNC_RATE_DEFAULT; 321 mpt->raid_mwce_setting = MPT_RAID_MWCE_DEFAULT; 322 mpt->raid_queue_depth = MPT_RAID_QUEUE_DEPTH_DEFAULT; 323 mpt->verbose = MPT_PRT_NONE; 324 mpt_set_options(mpt); 325 if (mpt->verbose == MPT_PRT_NONE) { 326 mpt->verbose = MPT_PRT_WARN; 327 /* Print INFO level (if any) if bootverbose is set */ 328 mpt->verbose += (bootverbose != 0)? 1 : 0; 329 } 330 /* Make sure memory access decoders are enabled */ 331 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 332 if ((cmd & PCIM_CMD_MEMEN) == 0) { 333 device_printf(dev, "Memory accesses disabled"); 334 goto bad; 335 } 336 337 /* 338 * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set. 339 */ 340 cmd |= 341 PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN | 342 PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN; 343 pci_write_config(dev, PCIR_COMMAND, cmd, 2); 344 345 /* 346 * Make sure we've disabled the ROM. 347 */ 348 data = pci_read_config(dev, PCIR_BIOS, 4); 349 data &= ~1; 350 pci_write_config(dev, PCIR_BIOS, data, 4); 351 352 /* 353 * Is this part a dual? 354 * If so, link with our partner (around yet) 355 */ 356 if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 || 357 (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) { 358 mpt_link_peer(mpt); 359 } 360 361 /* 362 * Set up register access. PIO mode is required for 363 * certain reset operations (but must be disabled for 364 * some cards otherwise). 365 */ 366 mpt->pci_pio_rid = PCIR_BAR(MPT_IO_BAR); 367 mpt->pci_pio_reg = bus_alloc_resource(dev, SYS_RES_IOPORT, 368 &mpt->pci_pio_rid, 0, ~0, 0, RF_ACTIVE); 369 if (mpt->pci_pio_reg == NULL) { 370 device_printf(dev, "unable to map registers in PIO mode\n"); 371 goto bad; 372 } 373 mpt->pci_pio_st = rman_get_bustag(mpt->pci_pio_reg); 374 mpt->pci_pio_sh = rman_get_bushandle(mpt->pci_pio_reg); 375 376 /* Allocate kernel virtual memory for the 9x9's Mem0 region */ 377 mpt->pci_mem_rid = PCIR_BAR(MPT_MEM_BAR); 378 mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY, 379 &mpt->pci_mem_rid, 0, ~0, 0, RF_ACTIVE); 380 if (mpt->pci_reg == NULL) { 381 device_printf(dev, "Unable to memory map registers.\n"); 382 if (mpt->is_sas) { 383 device_printf(dev, "Giving Up.\n"); 384 goto bad; 385 } 386 device_printf(dev, "Falling back to PIO mode.\n"); 387 mpt->pci_st = mpt->pci_pio_st; 388 mpt->pci_sh = mpt->pci_pio_sh; 389 } else { 390 mpt->pci_st = rman_get_bustag(mpt->pci_reg); 391 mpt->pci_sh = rman_get_bushandle(mpt->pci_reg); 392 } 393 394 /* Get a handle to the interrupt */ 395 iqd = 0; 396#if __FreeBSD_version < 500000 397 mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0, 1, 398 RF_ACTIVE | RF_SHAREABLE); 399#else 400 mpt->pci_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 401 RF_ACTIVE | RF_SHAREABLE); 402#endif 403 if (mpt->pci_irq == NULL) { 404 device_printf(dev, "could not allocate interrupt\n"); 405 goto bad; 406 } 407 408 MPT_LOCK_SETUP(mpt); 409 410 /* Disable interrupts at the part */ 411 mpt_disable_ints(mpt); 412 413 /* Register the interrupt handler */ 414 if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr, 415 mpt, &mpt->ih)) { 416 device_printf(dev, "could not setup interrupt\n"); 417 goto bad; 418 } 419 420 /* Allocate dma memory */ 421/* XXX JGibbs -Should really be done based on IOCFacts. */ 422 if (mpt_dma_mem_alloc(mpt)) { 423 device_printf(dev, "Could not allocate DMA memory\n"); 424 goto bad; 425 } 426 427 /* 428 * Save the PCI config register values 429 * 430 * Hard resets are known to screw up the BAR for diagnostic 431 * memory accesses (Mem1). 432 * 433 * Using Mem1 is known to make the chip stop responding to 434 * configuration space transfers, so we need to save it now 435 */ 436 437 mpt_read_config_regs(mpt); 438 439 /* 440 * Disable PIO until we need it 441 */ 442 pci_disable_io(dev, SYS_RES_IOPORT); 443 444 /* Initialize the hardware */ 445 if (mpt->disabled == 0) { 446 447 MPT_LOCK(mpt); 448 if (mpt_attach(mpt) != 0) { 449 MPT_UNLOCK(mpt); 450 goto bad; 451 } 452 } 453 454 return (0); 455 456bad: 457 mpt_dma_mem_free(mpt); 458 mpt_free_bus_resources(mpt); 459 460 /* 461 * but return zero to preserve unit numbering 462 */ 463 return (0); 464} 465 466/* 467 * Free bus resources 468 */ 469static void 470mpt_free_bus_resources(struct mpt_softc *mpt) 471{ 472 if (mpt->ih) { 473 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih); 474 mpt->ih = 0; 475 } 476 477 if (mpt->pci_irq) { 478 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq); 479 mpt->pci_irq = 0; 480 } 481 482 if (mpt->pci_pio_reg) { 483 bus_release_resource(mpt->dev, SYS_RES_IOPORT, mpt->pci_pio_rid, 484 mpt->pci_pio_reg); 485 mpt->pci_pio_reg = 0; 486 } 487 if (mpt->pci_reg) { 488 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_mem_rid, 489 mpt->pci_reg); 490 mpt->pci_reg = 0; 491 } 492 MPT_LOCK_DESTROY(mpt); 493} 494 495 496/* 497 * Disconnect ourselves from the system. 498 */ 499static int 500mpt_pci_detach(device_t dev) 501{ 502 struct mpt_softc *mpt; 503 504 mpt = (struct mpt_softc*)device_get_softc(dev); 505 mpt_prt(mpt, "mpt_detach\n"); 506 507 if (mpt) { 508 mpt_disable_ints(mpt); 509 mpt_detach(mpt); 510 mpt_reset(mpt, /*reinit*/FALSE); 511 mpt_dma_mem_free(mpt); 512 mpt_free_bus_resources(mpt); 513 if (mpt->raid_volumes != NULL 514 && mpt->ioc_page2 != NULL) { 515 int i; 516 517 for (i = 0; i < mpt->ioc_page2->MaxVolumes; i++) { 518 struct mpt_raid_volume *mpt_vol; 519 520 mpt_vol = &mpt->raid_volumes[i]; 521 if (mpt_vol->config_page) 522 free(mpt_vol->config_page, M_DEVBUF); 523 } 524 } 525 if (mpt->ioc_page2 != NULL) 526 free(mpt->ioc_page2, M_DEVBUF); 527 if (mpt->ioc_page3 != NULL) 528 free(mpt->ioc_page3, M_DEVBUF); 529 if (mpt->raid_volumes != NULL) 530 free(mpt->raid_volumes, M_DEVBUF); 531 if (mpt->raid_disks != NULL) 532 free(mpt->raid_disks, M_DEVBUF); 533 if (mpt->eh != NULL) 534 EVENTHANDLER_DEREGISTER(shutdown_final, mpt->eh); 535 } 536 return(0); 537} 538 539 540/* 541 * Disable the hardware 542 * XXX - Called too early by New Bus!!! ??? 543 */ 544static int 545mpt_pci_shutdown(device_t dev) 546{ 547 struct mpt_softc *mpt; 548 549 mpt = (struct mpt_softc *)device_get_softc(dev); 550 if (mpt) 551 return (mpt_shutdown(mpt)); 552 return(0); 553} 554 555static int 556mpt_dma_mem_alloc(struct mpt_softc *mpt) 557{ 558 int i, error, nsegs; 559 uint8_t *vptr; 560 uint32_t pptr, end; 561 size_t len; 562 struct mpt_map_info mi; 563 device_t dev = mpt->dev; 564 565 /* Check if we alreay have allocated the reply memory */ 566 if (mpt->reply_phys != 0) { 567 return 0; 568 } 569 570 len = sizeof (request_t) * MPT_MAX_REQUESTS(mpt); 571#ifdef RELENG_4 572 mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK); 573 if (mpt->request_pool == NULL) { 574 device_printf(dev, "cannot allocate request pool\n"); 575 return (1); 576 } 577 bzero(mpt->request_pool, len); 578#else 579 mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK|M_ZERO); 580 if (mpt->request_pool == NULL) { 581 device_printf(dev, "cannot allocate request pool\n"); 582 return (1); 583 } 584#endif 585 586 /* 587 * Create a parent dma tag for this device. 588 * 589 * Align at byte boundaries, limit to 32-bit addressing for 590 * request/reply queues. 591 */ 592 if (mpt_dma_tag_create(mpt, /*parent*/NULL, /*alignment*/1, 593 /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR, 594 /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, 595 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 596 /*nsegments*/BUS_SPACE_MAXSIZE_32BIT, 597 /*maxsegsz*/BUS_SPACE_UNRESTRICTED, /*flags*/0, 598 &mpt->parent_dmat) != 0) { 599 device_printf(dev, "cannot create parent dma tag\n"); 600 return (1); 601 } 602 603 /* Create a child tag for reply buffers */ 604 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, 2 * PAGE_SIZE, 605 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 606 NULL, NULL, 2 * PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 607 &mpt->reply_dmat) != 0) { 608 device_printf(dev, "cannot create a dma tag for replies\n"); 609 return (1); 610 } 611 612 /* Allocate some DMA accessable memory for replies */ 613 if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply, 614 BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) { 615 device_printf(dev, 616 "cannot allocate %lu bytes of reply memory\n", 617 (u_long) (2 * PAGE_SIZE)); 618 return (1); 619 } 620 621 mi.mpt = mpt; 622 mi.error = 0; 623 624 /* Load and lock it into "bus space" */ 625 bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply, 626 2 * PAGE_SIZE, mpt_map_rquest, &mi, 0); 627 628 if (mi.error) { 629 device_printf(dev, 630 "error %d loading dma map for DMA reply queue\n", mi.error); 631 return (1); 632 } 633 mpt->reply_phys = mi.phys; 634 635 /* Create a child tag for data buffers */ 636 637 /* 638 * XXX: we should say that nsegs is 'unrestricted, but that 639 * XXX: tickles a horrible bug in the busdma code. Instead, 640 * XXX: we'll derive a reasonable segment limit from MAXPHYS 641 */ 642 nsegs = (MAXPHYS / PAGE_SIZE) + 1; 643 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, 1, 644 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 645 NULL, NULL, MAXBSIZE, nsegs, BUS_SPACE_MAXSIZE_32BIT, 0, 646 &mpt->buffer_dmat) != 0) { 647 device_printf(dev, 648 "cannot create a dma tag for data buffers\n"); 649 return (1); 650 } 651 652 /* Create a child tag for request buffers */ 653 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 654 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, 655 NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0, 656 &mpt->request_dmat) != 0) { 657 device_printf(dev, "cannot create a dma tag for requests\n"); 658 return (1); 659 } 660 661 /* Allocate some DMA accessable memory for requests */ 662 if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request, 663 BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) { 664 device_printf(dev, 665 "cannot allocate %d bytes of request memory\n", 666 MPT_REQ_MEM_SIZE(mpt)); 667 return (1); 668 } 669 670 mi.mpt = mpt; 671 mi.error = 0; 672 673 /* Load and lock it into "bus space" */ 674 bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request, 675 MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &mi, 0); 676 677 if (mi.error) { 678 device_printf(dev, 679 "error %d loading dma map for DMA request queue\n", 680 mi.error); 681 return (1); 682 } 683 mpt->request_phys = mi.phys; 684 685 i = 0; 686 pptr = mpt->request_phys; 687 vptr = mpt->request; 688 end = pptr + MPT_REQ_MEM_SIZE(mpt); 689 while(pptr < end) { 690 request_t *req = &mpt->request_pool[i]; 691 req->index = i++; 692 693 /* Store location of Request Data */ 694 req->req_pbuf = pptr; 695 req->req_vbuf = vptr; 696 697 pptr += MPT_REQUEST_AREA; 698 vptr += MPT_REQUEST_AREA; 699 700 req->sense_pbuf = (pptr - MPT_SENSE_SIZE); 701 req->sense_vbuf = (vptr - MPT_SENSE_SIZE); 702 703 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap); 704 if (error) { 705 device_printf(dev, 706 "error %d creating per-cmd DMA maps\n", error); 707 return (1); 708 } 709 } 710 return (0); 711} 712 713 714 715/* Deallocate memory that was allocated by mpt_dma_mem_alloc 716 */ 717static void 718mpt_dma_mem_free(struct mpt_softc *mpt) 719{ 720 int i; 721 722 /* Make sure we aren't double destroying */ 723 if (mpt->reply_dmat == 0) { 724 if (mpt->verbose >= MPT_PRT_DEBUG) 725 device_printf(mpt->dev,"Already released dma memory\n"); 726 return; 727 } 728 729 for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) { 730 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap); 731 } 732 bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap); 733 bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap); 734 bus_dma_tag_destroy(mpt->request_dmat); 735 bus_dma_tag_destroy(mpt->buffer_dmat); 736 bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap); 737 bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap); 738 bus_dma_tag_destroy(mpt->reply_dmat); 739 bus_dma_tag_destroy(mpt->parent_dmat); 740 mpt->reply_dmat = 0; 741 free(mpt->request_pool, M_DEVBUF); 742 mpt->request_pool = 0; 743 744} 745 746 747 748/* Reads modifiable (via PCI transactions) config registers */ 749static void 750mpt_read_config_regs(struct mpt_softc *mpt) 751{ 752 mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2); 753 mpt->pci_cfg.LatencyTimer_LineSize = 754 pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2); 755 mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_BAR(0), 4); 756 mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(1), 4); 757 mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(2), 4); 758 mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(3), 4); 759 mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(4), 4); 760 mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4); 761 mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1); 762 mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4); 763} 764 765/* Sets modifiable config registers */ 766void 767mpt_set_config_regs(struct mpt_softc *mpt) 768{ 769 uint32_t val; 770 771#define MPT_CHECK(reg, offset, size) \ 772 val = pci_read_config(mpt->dev, offset, size); \ 773 if (mpt->pci_cfg.reg != val) { \ 774 mpt_prt(mpt, \ 775 "Restoring " #reg " to 0x%X from 0x%X\n", \ 776 mpt->pci_cfg.reg, val); \ 777 } 778 779 if (mpt->verbose >= MPT_PRT_DEBUG) { 780 MPT_CHECK(Command, PCIR_COMMAND, 2); 781 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2); 782 MPT_CHECK(IO_BAR, PCIR_BAR(0), 4); 783 MPT_CHECK(Mem0_BAR[0], PCIR_BAR(1), 4); 784 MPT_CHECK(Mem0_BAR[1], PCIR_BAR(2), 4); 785 MPT_CHECK(Mem1_BAR[0], PCIR_BAR(3), 4); 786 MPT_CHECK(Mem1_BAR[1], PCIR_BAR(4), 4); 787 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4); 788 MPT_CHECK(IntLine, PCIR_INTLINE, 1); 789 MPT_CHECK(PMCSR, 0x44, 4); 790 } 791#undef MPT_CHECK 792 793 pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2); 794 pci_write_config(mpt->dev, PCIR_CACHELNSZ, 795 mpt->pci_cfg.LatencyTimer_LineSize, 2); 796 pci_write_config(mpt->dev, PCIR_BAR(0), mpt->pci_cfg.IO_BAR, 4); 797 pci_write_config(mpt->dev, PCIR_BAR(1), mpt->pci_cfg.Mem0_BAR[0], 4); 798 pci_write_config(mpt->dev, PCIR_BAR(2), mpt->pci_cfg.Mem0_BAR[1], 4); 799 pci_write_config(mpt->dev, PCIR_BAR(3), mpt->pci_cfg.Mem1_BAR[0], 4); 800 pci_write_config(mpt->dev, PCIR_BAR(4), mpt->pci_cfg.Mem1_BAR[1], 4); 801 pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4); 802 pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1); 803 pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4); 804} 805 806static void 807mpt_pci_intr(void *arg) 808{ 809 struct mpt_softc *mpt; 810 811 mpt = (struct mpt_softc *)arg; 812 MPT_LOCK(mpt); 813 mpt_intr(mpt); 814 MPT_UNLOCK(mpt); 815} 816