mpt_pci.c revision 147883
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 name of the LSI Logic Corporation nor the names of its 49 * contributors may be used to endorse or promote products derived from 50 * 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 147883 2005-07-10 15:05:39Z scottl $"); 67 68#include <dev/mpt/mpt.h> 69#include <dev/mpt/mpt_cam.h> 70#include <dev/mpt/mpt_raid.h> 71 72#if __FreeBSD_version < 500000 73#include <pci/pcireg.h> 74#include <pci/pcivar.h> 75#else 76#include <dev/pci/pcireg.h> 77#include <dev/pci/pcivar.h> 78#endif 79 80#ifndef PCI_VENDOR_LSI 81#define PCI_VENDOR_LSI 0x1000 82#endif 83 84#ifndef PCI_PRODUCT_LSI_FC909 85#define PCI_PRODUCT_LSI_FC909 0x0620 86#endif 87 88#ifndef PCI_PRODUCT_LSI_FC909A 89#define PCI_PRODUCT_LSI_FC909A 0x0621 90#endif 91 92#ifndef PCI_PRODUCT_LSI_FC919 93#define PCI_PRODUCT_LSI_FC919 0x0624 94#endif 95 96#ifndef PCI_PRODUCT_LSI_FC929 97#define PCI_PRODUCT_LSI_FC929 0x0622 98#endif 99 100#ifndef PCI_PRODUCT_LSI_1030 101#define PCI_PRODUCT_LSI_1030 0x0030 102#endif 103 104#ifndef PCIM_CMD_SERRESPEN 105#define PCIM_CMD_SERRESPEN 0x0100 106#endif 107 108 109 110#define MPT_IO_BAR 0 111#define MPT_MEM_BAR 1 112 113static int mpt_pci_probe(device_t); 114static int mpt_pci_attach(device_t); 115static void mpt_free_bus_resources(struct mpt_softc *mpt); 116static int mpt_pci_detach(device_t); 117static int mpt_pci_shutdown(device_t); 118static int mpt_dma_mem_alloc(struct mpt_softc *mpt); 119static void mpt_dma_mem_free(struct mpt_softc *mpt); 120static void mpt_read_config_regs(struct mpt_softc *mpt); 121static void mpt_pci_intr(void *); 122 123static device_method_t mpt_methods[] = { 124 /* Device interface */ 125 DEVMETHOD(device_probe, mpt_pci_probe), 126 DEVMETHOD(device_attach, mpt_pci_attach), 127 DEVMETHOD(device_detach, mpt_pci_detach), 128 DEVMETHOD(device_shutdown, mpt_pci_shutdown), 129 { 0, 0 } 130}; 131 132static driver_t mpt_driver = { 133 "mpt", mpt_methods, sizeof(struct mpt_softc) 134}; 135static devclass_t mpt_devclass; 136DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0); 137MODULE_VERSION(mpt, 1); 138 139static int 140mpt_pci_probe(device_t dev) 141{ 142 char *desc; 143 144 if (pci_get_vendor(dev) != PCI_VENDOR_LSI) 145 return (ENXIO); 146 147 switch ((pci_get_device(dev) & ~1)) { 148 case PCI_PRODUCT_LSI_FC909: 149 desc = "LSILogic FC909 FC Adapter"; 150 break; 151 case PCI_PRODUCT_LSI_FC909A: 152 desc = "LSILogic FC909A FC Adapter"; 153 break; 154 case PCI_PRODUCT_LSI_FC919: 155 desc = "LSILogic FC919 FC Adapter"; 156 break; 157 case PCI_PRODUCT_LSI_FC929: 158 desc = "LSILogic FC929 FC Adapter"; 159 break; 160 case PCI_PRODUCT_LSI_1030: 161 desc = "LSILogic 1030 Ultra4 Adapter"; 162 break; 163 default: 164 return (ENXIO); 165 } 166 167 device_set_desc(dev, desc); 168 return (0); 169} 170 171#ifdef RELENG_4 172static void 173mpt_set_options(struct mpt_softc *mpt) 174{ 175 int bitmap; 176 177 bitmap = 0; 178 if (getenv_int("mpt_disable", &bitmap)) { 179 if (bitmap & (1 << mpt->unit)) { 180 mpt->disabled = 1; 181 } 182 } 183 184 bitmap = 0; 185 if (getenv_int("mpt_debug", &bitmap)) { 186 if (bitmap & (1 << mpt->unit)) { 187 mpt->verbose = MPT_PRT_DEBUG; 188 } 189 } 190 191} 192#else 193static void 194mpt_set_options(struct mpt_softc *mpt) 195{ 196 int tval; 197 198 tval = 0; 199 if (resource_int_value(device_get_name(mpt->dev), 200 device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) { 201 mpt->disabled = 1; 202 } 203 tval = 0; 204 if (resource_int_value(device_get_name(mpt->dev), 205 device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) { 206 mpt->verbose += tval; 207 } 208} 209#endif 210 211 212static void 213mpt_link_peer(struct mpt_softc *mpt) 214{ 215 struct mpt_softc *mpt2; 216 217 if (mpt->unit == 0) 218 return; 219 220 /* 221 * XXX: depends on probe order 222 */ 223 mpt2 = (struct mpt_softc *)devclass_get_softc(mpt_devclass,mpt->unit-1); 224 225 if (mpt2 == NULL) { 226 return; 227 } 228 if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) { 229 return; 230 } 231 if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) { 232 return; 233 } 234 mpt->mpt2 = mpt2; 235 mpt2->mpt2 = mpt; 236 if (mpt->verbose >= MPT_PRT_DEBUG) { 237 mpt_prt(mpt, "linking with peer (mpt%d)\n", 238 device_get_unit(mpt2->dev)); 239 } 240} 241 242 243static int 244mpt_pci_attach(device_t dev) 245{ 246 struct mpt_softc *mpt; 247 int iqd; 248 uint32_t data, cmd; 249 250 /* Allocate the softc structure */ 251 mpt = (struct mpt_softc*)device_get_softc(dev); 252 if (mpt == NULL) { 253 device_printf(dev, "cannot allocate softc\n"); 254 return (ENOMEM); 255 } 256 bzero(mpt, sizeof(struct mpt_softc)); 257 switch ((pci_get_device(dev) & ~1)) { 258 case PCI_PRODUCT_LSI_FC909: 259 case PCI_PRODUCT_LSI_FC909A: 260 case PCI_PRODUCT_LSI_FC919: 261 case PCI_PRODUCT_LSI_FC929: 262 mpt->is_fc = 1; 263 break; 264 default: 265 break; 266 } 267 mpt->dev = dev; 268 mpt->unit = device_get_unit(dev); 269 mpt->raid_resync_rate = MPT_RAID_RESYNC_RATE_DEFAULT; 270 mpt->raid_mwce_setting = MPT_RAID_MWCE_DEFAULT; 271 mpt->raid_queue_depth = MPT_RAID_QUEUE_DEPTH_DEFAULT; 272 mpt_set_options(mpt); 273 mpt->verbose = MPT_PRT_INFO; 274 mpt->verbose += (bootverbose != 0)? 1 : 0; 275 276 /* Make sure memory access decoders are enabled */ 277 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 278 if ((cmd & PCIM_CMD_MEMEN) == 0) { 279 device_printf(dev, "Memory accesses disabled"); 280 goto bad; 281 } 282 283 /* 284 * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set. 285 */ 286 cmd |= 287 PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN | 288 PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN; 289 pci_write_config(dev, PCIR_COMMAND, cmd, 2); 290 291 /* 292 * Make sure we've disabled the ROM. 293 */ 294 data = pci_read_config(dev, PCIR_BIOS, 4); 295 data &= ~1; 296 pci_write_config(dev, PCIR_BIOS, data, 4); 297 298 /* 299 * Is this part a dual? 300 * If so, link with our partner (around yet) 301 */ 302 if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 || 303 (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) { 304 mpt_link_peer(mpt); 305 } 306 307 /* 308 * Set up register access. PIO mode is required for 309 * certain reset operations. 310 */ 311 mpt->pci_pio_rid = PCIR_BAR(MPT_IO_BAR); 312 mpt->pci_pio_reg = bus_alloc_resource(dev, SYS_RES_IOPORT, 313 &mpt->pci_pio_rid, 0, ~0, 0, RF_ACTIVE); 314 if (mpt->pci_pio_reg == NULL) { 315 device_printf(dev, "unable to map registers in PIO mode\n"); 316 goto bad; 317 } 318 mpt->pci_pio_st = rman_get_bustag(mpt->pci_pio_reg); 319 mpt->pci_pio_sh = rman_get_bushandle(mpt->pci_pio_reg); 320 321 /* Allocate kernel virtual memory for the 9x9's Mem0 region */ 322 mpt->pci_mem_rid = PCIR_BAR(MPT_MEM_BAR); 323 mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY, 324 &mpt->pci_mem_rid, 0, ~0, 0, RF_ACTIVE); 325 if (mpt->pci_reg == NULL) { 326 device_printf(dev, "Unable to memory map registers.\n"); 327 device_printf(dev, "Falling back to PIO mode.\n"); 328 mpt->pci_st = mpt->pci_pio_st; 329 mpt->pci_sh = mpt->pci_pio_sh; 330 } else { 331 mpt->pci_st = rman_get_bustag(mpt->pci_reg); 332 mpt->pci_sh = rman_get_bushandle(mpt->pci_reg); 333 } 334 335 /* Get a handle to the interrupt */ 336 iqd = 0; 337#if __FreeBSD_version < 500000 338 mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0, 1, 339 RF_ACTIVE | RF_SHAREABLE); 340#else 341 mpt->pci_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd, 342 RF_ACTIVE | RF_SHAREABLE); 343#endif 344 if (mpt->pci_irq == NULL) { 345 device_printf(dev, "could not allocate interrupt\n"); 346 goto bad; 347 } 348 349 MPT_LOCK_SETUP(mpt); 350 351 /* Disable interrupts at the part */ 352 mpt_disable_ints(mpt); 353 354 /* Register the interrupt handler */ 355 if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr, 356 mpt, &mpt->ih)) { 357 device_printf(dev, "could not setup interrupt\n"); 358 goto bad; 359 } 360 361 /* Allocate dma memory */ 362/* XXX JGibbs -Should really be done based on IOCFacts. */ 363 if (mpt_dma_mem_alloc(mpt)) { 364 device_printf(dev, "Could not allocate DMA memory\n"); 365 goto bad; 366 } 367 368 /* 369 * Save the PCI config register values 370 * 371 * Hard resets are known to screw up the BAR for diagnostic 372 * memory accesses (Mem1). 373 * 374 * Using Mem1 is known to make the chip stop responding to 375 * configuration space transfers, so we need to save it now 376 */ 377 378 mpt_read_config_regs(mpt); 379 380 /* Initialize the hardware */ 381 if (mpt->disabled == 0) { 382 MPT_LOCK(mpt); 383 if (mpt_attach(mpt) != 0) { 384 MPT_UNLOCK(mpt); 385 goto bad; 386 } 387 } 388 389 return (0); 390 391bad: 392 mpt_dma_mem_free(mpt); 393 mpt_free_bus_resources(mpt); 394 395 /* 396 * but return zero to preserve unit numbering 397 */ 398 return (0); 399} 400 401/* 402 * Free bus resources 403 */ 404static void 405mpt_free_bus_resources(struct mpt_softc *mpt) 406{ 407 if (mpt->ih) { 408 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih); 409 mpt->ih = 0; 410 } 411 412 if (mpt->pci_irq) { 413 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq); 414 mpt->pci_irq = 0; 415 } 416 417 if (mpt->pci_pio_reg) { 418 bus_release_resource(mpt->dev, SYS_RES_IOPORT, mpt->pci_pio_rid, 419 mpt->pci_pio_reg); 420 mpt->pci_pio_reg = 0; 421 } 422 if (mpt->pci_reg) { 423 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_mem_rid, 424 mpt->pci_reg); 425 mpt->pci_reg = 0; 426 } 427 MPT_LOCK_DESTROY(mpt); 428} 429 430 431/* 432 * Disconnect ourselves from the system. 433 */ 434static int 435mpt_pci_detach(device_t dev) 436{ 437 struct mpt_softc *mpt; 438 439 mpt = (struct mpt_softc*)device_get_softc(dev); 440 mpt_prt(mpt, "mpt_detach\n"); 441 442 if (mpt) { 443 mpt_disable_ints(mpt); 444 mpt_detach(mpt); 445 mpt_reset(mpt, /*reinit*/FALSE); 446 mpt_dma_mem_free(mpt); 447 mpt_free_bus_resources(mpt); 448 if (mpt->raid_volumes != NULL 449 && mpt->ioc_page2 != NULL) { 450 int i; 451 452 for (i = 0; i < mpt->ioc_page2->MaxVolumes; i++) { 453 struct mpt_raid_volume *mpt_vol; 454 455 mpt_vol = &mpt->raid_volumes[i]; 456 if (mpt_vol->config_page) 457 free(mpt_vol->config_page, M_DEVBUF); 458 } 459 } 460 if (mpt->ioc_page2 != NULL) 461 free(mpt->ioc_page2, M_DEVBUF); 462 if (mpt->ioc_page3 != NULL) 463 free(mpt->ioc_page3, M_DEVBUF); 464 if (mpt->raid_volumes != NULL) 465 free(mpt->raid_volumes, M_DEVBUF); 466 if (mpt->raid_disks != NULL) 467 free(mpt->raid_disks, M_DEVBUF); 468 if (mpt->eh != NULL) 469 EVENTHANDLER_DEREGISTER(shutdown_final, mpt->eh); 470 } 471 return(0); 472} 473 474 475/* 476 * Disable the hardware 477 * XXX - Called too early by New Bus!!! ??? 478 */ 479static int 480mpt_pci_shutdown(device_t dev) 481{ 482 struct mpt_softc *mpt; 483 484 mpt = (struct mpt_softc *)device_get_softc(dev); 485 if (mpt) 486 return (mpt_shutdown(mpt)); 487 return(0); 488} 489 490static int 491mpt_dma_mem_alloc(struct mpt_softc *mpt) 492{ 493 int i, error; 494 uint8_t *vptr; 495 uint32_t pptr, end; 496 size_t len; 497 struct mpt_map_info mi; 498 device_t dev = mpt->dev; 499 500 /* Check if we alreay have allocated the reply memory */ 501 if (mpt->reply_phys != 0) { 502 return 0; 503 } 504 505 len = sizeof (request_t) * MPT_MAX_REQUESTS(mpt); 506#ifdef RELENG_4 507 mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK); 508 if (mpt->request_pool == NULL) { 509 device_printf(dev, "cannot allocate request pool\n"); 510 return (1); 511 } 512 bzero(mpt->request_pool, len); 513#else 514 mpt->request_pool = (request_t *)malloc(len, M_DEVBUF, M_WAITOK|M_ZERO); 515 if (mpt->request_pool == NULL) { 516 device_printf(dev, "cannot allocate request pool\n"); 517 return (1); 518 } 519#endif 520 521 /* 522 * Create a parent dma tag for this device 523 * 524 * Align at byte boundaries, limit to 32-bit addressing 525 * (The chip supports 64-bit addressing, but this driver doesn't) 526 */ 527 if (mpt_dma_tag_create(mpt, /*parent*/NULL, /*alignment*/1, 528 /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, 529 /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL, 530 /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, 531 /*nsegments*/BUS_SPACE_MAXSIZE_32BIT, 532 /*maxsegsz*/BUS_SPACE_UNRESTRICTED, /*flags*/0, 533 &mpt->parent_dmat) != 0) { 534 device_printf(dev, "cannot create parent dma tag\n"); 535 return (1); 536 } 537 538 /* Create a child tag for reply buffers */ 539 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 540 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 541 NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 542 &mpt->reply_dmat) != 0) { 543 device_printf(dev, "cannot create a dma tag for replies\n"); 544 return (1); 545 } 546 547 /* Allocate some DMA accessable memory for replies */ 548 if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply, 549 BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) { 550 device_printf(dev, "cannot allocate %lu bytes of reply memory\n", 551 (u_long)PAGE_SIZE); 552 return (1); 553 } 554 555 mi.mpt = mpt; 556 mi.error = 0; 557 558 /* Load and lock it into "bus space" */ 559 bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply, 560 PAGE_SIZE, mpt_map_rquest, &mi, 0); 561 562 if (mi.error) { 563 device_printf(dev, 564 "error %d loading dma map for DMA reply queue\n", mi.error); 565 return (1); 566 } 567 mpt->reply_phys = mi.phys; 568 569 /* Create a child tag for data buffers */ 570 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, 1, 571 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 572 NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0, 573 &mpt->buffer_dmat) != 0) { 574 device_printf(dev, 575 "cannot create a dma tag for data buffers\n"); 576 return (1); 577 } 578 579 /* Create a child tag for request buffers */ 580 if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 581 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 582 NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0, 583 &mpt->request_dmat) != 0) { 584 device_printf(dev, "cannot create a dma tag for requests\n"); 585 return (1); 586 } 587 588 /* Allocate some DMA accessable memory for requests */ 589 if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request, 590 BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) { 591 device_printf(dev, 592 "cannot allocate %d bytes of request memory\n", 593 MPT_REQ_MEM_SIZE(mpt)); 594 return (1); 595 } 596 597 mi.mpt = mpt; 598 mi.error = 0; 599 600 /* Load and lock it into "bus space" */ 601 bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request, 602 MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &mi, 0); 603 604 if (mi.error) { 605 device_printf(dev, 606 "error %d loading dma map for DMA request queue\n", 607 mi.error); 608 return (1); 609 } 610 mpt->request_phys = mi.phys; 611 612 i = 0; 613 pptr = mpt->request_phys; 614 vptr = mpt->request; 615 end = pptr + MPT_REQ_MEM_SIZE(mpt); 616 while(pptr < end) { 617 request_t *req = &mpt->request_pool[i]; 618 req->index = i++; 619 620 /* Store location of Request Data */ 621 req->req_pbuf = pptr; 622 req->req_vbuf = vptr; 623 624 pptr += MPT_REQUEST_AREA; 625 vptr += MPT_REQUEST_AREA; 626 627 req->sense_pbuf = (pptr - MPT_SENSE_SIZE); 628 req->sense_vbuf = (vptr - MPT_SENSE_SIZE); 629 630 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap); 631 if (error) { 632 device_printf(dev, 633 "error %d creating per-cmd DMA maps\n", error); 634 return (1); 635 } 636 } 637 return (0); 638} 639 640 641 642/* Deallocate memory that was allocated by mpt_dma_mem_alloc 643 */ 644static void 645mpt_dma_mem_free(struct mpt_softc *mpt) 646{ 647 int i; 648 649 /* Make sure we aren't double destroying */ 650 if (mpt->reply_dmat == 0) { 651 if (mpt->verbose >= MPT_PRT_DEBUG) 652 device_printf(mpt->dev,"Already released dma memory\n"); 653 return; 654 } 655 656 for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) { 657 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap); 658 } 659 bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap); 660 bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap); 661 bus_dma_tag_destroy(mpt->request_dmat); 662 bus_dma_tag_destroy(mpt->buffer_dmat); 663 bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap); 664 bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap); 665 bus_dma_tag_destroy(mpt->reply_dmat); 666 bus_dma_tag_destroy(mpt->parent_dmat); 667 mpt->reply_dmat = 0; 668 free(mpt->request_pool, M_DEVBUF); 669 mpt->request_pool = 0; 670 671} 672 673 674 675/* Reads modifiable (via PCI transactions) config registers */ 676static void 677mpt_read_config_regs(struct mpt_softc *mpt) 678{ 679 mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2); 680 mpt->pci_cfg.LatencyTimer_LineSize = 681 pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2); 682 mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_BAR(0), 4); 683 mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(1), 4); 684 mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(2), 4); 685 mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(3), 4); 686 mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(4), 4); 687 mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4); 688 mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1); 689 mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4); 690} 691 692/* Sets modifiable config registers */ 693void 694mpt_set_config_regs(struct mpt_softc *mpt) 695{ 696 uint32_t val; 697 698#define MPT_CHECK(reg, offset, size) \ 699 val = pci_read_config(mpt->dev, offset, size); \ 700 if (mpt->pci_cfg.reg != val) { \ 701 mpt_prt(mpt, \ 702 "Restoring " #reg " to 0x%X from 0x%X\n", \ 703 mpt->pci_cfg.reg, val); \ 704 } 705 706 if (mpt->verbose >= MPT_PRT_DEBUG) { 707 MPT_CHECK(Command, PCIR_COMMAND, 2); 708 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2); 709 MPT_CHECK(IO_BAR, PCIR_BAR(0), 4); 710 MPT_CHECK(Mem0_BAR[0], PCIR_BAR(1), 4); 711 MPT_CHECK(Mem0_BAR[1], PCIR_BAR(2), 4); 712 MPT_CHECK(Mem1_BAR[0], PCIR_BAR(3), 4); 713 MPT_CHECK(Mem1_BAR[1], PCIR_BAR(4), 4); 714 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4); 715 MPT_CHECK(IntLine, PCIR_INTLINE, 1); 716 MPT_CHECK(PMCSR, 0x44, 4); 717 } 718#undef MPT_CHECK 719 720 pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2); 721 pci_write_config(mpt->dev, PCIR_CACHELNSZ, 722 mpt->pci_cfg.LatencyTimer_LineSize, 2); 723 pci_write_config(mpt->dev, PCIR_BAR(0), mpt->pci_cfg.IO_BAR, 4); 724 pci_write_config(mpt->dev, PCIR_BAR(1), mpt->pci_cfg.Mem0_BAR[0], 4); 725 pci_write_config(mpt->dev, PCIR_BAR(2), mpt->pci_cfg.Mem0_BAR[1], 4); 726 pci_write_config(mpt->dev, PCIR_BAR(3), mpt->pci_cfg.Mem1_BAR[0], 4); 727 pci_write_config(mpt->dev, PCIR_BAR(4), mpt->pci_cfg.Mem1_BAR[1], 4); 728 pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4); 729 pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1); 730 pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4); 731} 732 733static void 734mpt_pci_intr(void *arg) 735{ 736 struct mpt_softc *mpt; 737 738 mpt = (struct mpt_softc *)arg; 739 MPT_LOCK(mpt); 740 mpt_intr(mpt); 741 MPT_UNLOCK(mpt); 742} 743