Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/twa/tw_osl_freebsd.c
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1 /* 2 * Copyright (c) 2004-05 Applied Micro Circuits Corporation. 3 * Copyright (c) 2004-05 Vinod Kashyap. 4 * Copyright (c) 2000 Michael Smith 5 * Copyright (c) 2000 BSDi 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: releng/6.2/sys/dev/twa/tw_osl_freebsd.c 165449 2006-12-21 21:00:52Z mjacob $ 30 */ 31 32 /* 33 * AMCC'S 3ware driver for 9000 series storage controllers. 34 * 35 * Author: Vinod Kashyap 36 */ 37 38 39 /* 40 * FreeBSD specific functions not related to CAM, and other 41 * miscellaneous functions. 42 */ 43 44 45 #include <dev/twa/tw_osl_includes.h> 46 #include <dev/twa/tw_cl_fwif.h> 47 #include <dev/twa/tw_cl_ioctl.h> 48 #include <dev/twa/tw_osl_ioctl.h> 49 50 #ifdef TW_OSL_DEBUG 51 TW_INT32 TW_DEBUG_LEVEL_FOR_OSL = TW_OSL_DEBUG; 52 TW_INT32 TW_OSL_DEBUG_LEVEL_FOR_CL = TW_OSL_DEBUG; 53 #endif /* TW_OSL_DEBUG */ 54 55 MALLOC_DEFINE(TW_OSLI_MALLOC_CLASS, "twa_commands", "twa commands"); 56 57 58 static d_open_t twa_open; 59 static d_close_t twa_close; 60 static d_ioctl_t twa_ioctl; 61 62 static struct cdevsw twa_cdevsw = { 63 .d_version = D_VERSION, 64 .d_open = twa_open, 65 .d_close = twa_close, 66 .d_ioctl = twa_ioctl, 67 .d_name = "twa", 68 }; 69 70 static devclass_t twa_devclass; 71 72 73 /* 74 * Function name: twa_open 75 * Description: Called when the controller is opened. 76 * Simply marks the controller as open. 77 * 78 * Input: dev -- control device corresponding to the ctlr 79 * flags -- mode of open 80 * fmt -- device type (character/block etc.) 81 * proc -- current process 82 * Output: None 83 * Return value: 0 -- success 84 * non-zero-- failure 85 */ 86 static TW_INT32 87 twa_open(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, d_thread_t *proc) 88 { 89 TW_INT32 unit = minor(dev); 90 struct twa_softc *sc = devclass_get_softc(twa_devclass, unit); 91 92 tw_osli_dbg_dprintf(5, sc, "entered"); 93 sc->state |= TW_OSLI_CTLR_STATE_OPEN; 94 return(0); 95 } 96 97 98 99 /* 100 * Function name: twa_close 101 * Description: Called when the controller is closed. 102 * Simply marks the controller as not open. 103 * 104 * Input: dev -- control device corresponding to the ctlr 105 * flags -- mode of corresponding open 106 * fmt -- device type (character/block etc.) 107 * proc -- current process 108 * Output: None 109 * Return value: 0 -- success 110 * non-zero-- failure 111 */ 112 static TW_INT32 113 twa_close(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, d_thread_t *proc) 114 { 115 TW_INT32 unit = minor(dev); 116 struct twa_softc *sc = devclass_get_softc(twa_devclass, unit); 117 118 tw_osli_dbg_dprintf(5, sc, "entered"); 119 sc->state &= ~TW_OSLI_CTLR_STATE_OPEN; 120 return(0); 121 } 122 123 124 125 /* 126 * Function name: twa_ioctl 127 * Description: Called when an ioctl is posted to the controller. 128 * Handles any OS Layer specific cmds, passes the rest 129 * on to the Common Layer. 130 * 131 * Input: dev -- control device corresponding to the ctlr 132 * cmd -- ioctl cmd 133 * buf -- ptr to buffer in kernel memory, which is 134 * a copy of the input buffer in user-space 135 * flags -- mode of corresponding open 136 * proc -- current process 137 * Output: buf -- ptr to buffer in kernel memory, which will 138 * be copied to the output buffer in user-space 139 * Return value: 0 -- success 140 * non-zero-- failure 141 */ 142 static TW_INT32 143 twa_ioctl(struct cdev *dev, u_long cmd, caddr_t buf, TW_INT32 flags, d_thread_t *proc) 144 { 145 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 146 TW_INT32 error; 147 148 tw_osli_dbg_dprintf(5, sc, "entered"); 149 150 switch (cmd) { 151 case TW_OSL_IOCTL_FIRMWARE_PASS_THROUGH: 152 tw_osli_dbg_dprintf(6, sc, "ioctl: fw_passthru"); 153 error = tw_osli_fw_passthru(sc, (TW_INT8 *)buf); 154 break; 155 156 case TW_OSL_IOCTL_SCAN_BUS: 157 /* Request CAM for a bus scan. */ 158 tw_osli_dbg_dprintf(6, sc, "ioctl: scan bus"); 159 error = tw_osli_request_bus_scan(sc); 160 break; 161 162 default: 163 tw_osli_dbg_dprintf(6, sc, "ioctl: 0x%lx", cmd); 164 error = tw_cl_ioctl(&sc->ctlr_handle, cmd, buf); 165 break; 166 } 167 return(error); 168 } 169 170 171 172 static TW_INT32 twa_probe(device_t dev); 173 static TW_INT32 twa_attach(device_t dev); 174 static TW_INT32 twa_detach(device_t dev); 175 static TW_INT32 twa_shutdown(device_t dev); 176 static TW_VOID twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op); 177 static TW_VOID twa_pci_intr(TW_VOID *arg); 178 #ifdef TW_OSLI_DEFERRED_INTR_USED 179 static TW_VOID twa_deferred_intr(TW_VOID *context, TW_INT32 pending); 180 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 181 182 static TW_INT32 tw_osli_alloc_mem(struct twa_softc *sc); 183 static TW_VOID tw_osli_free_resources(struct twa_softc *sc); 184 185 static TW_VOID twa_map_load_data_callback(TW_VOID *arg, 186 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 187 static TW_VOID twa_map_load_callback(TW_VOID *arg, 188 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 189 190 191 static device_method_t twa_methods[] = { 192 /* Device interface */ 193 DEVMETHOD(device_probe, twa_probe), 194 DEVMETHOD(device_attach, twa_attach), 195 DEVMETHOD(device_detach, twa_detach), 196 DEVMETHOD(device_shutdown, twa_shutdown), 197 198 DEVMETHOD(bus_print_child, bus_generic_print_child), 199 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 200 {0, 0} 201 }; 202 203 static driver_t twa_pci_driver = { 204 "twa", 205 twa_methods, 206 sizeof(struct twa_softc) 207 }; 208 209 DRIVER_MODULE(twa, pci, twa_pci_driver, twa_devclass, 0, 0); 210 211 MODULE_DEPEND(twa, pci, 1, 1, 1); 212 MODULE_DEPEND(twa, cam, 1, 1, 1); 213 214 215 /* 216 * Function name: twa_probe 217 * Description: Called at driver load time. Claims 9000 ctlrs. 218 * 219 * Input: dev -- bus device corresponding to the ctlr 220 * Output: None 221 * Return value: <= 0 -- success 222 * > 0 -- failure 223 */ 224 static TW_INT32 225 twa_probe(device_t dev) 226 { 227 static TW_UINT8 first_ctlr = 1; 228 229 tw_osli_dbg_printf(3, "entered"); 230 231 if (tw_cl_ctlr_supported(pci_get_vendor(dev), pci_get_device(dev))) { 232 device_set_desc(dev, TW_OSLI_DEVICE_NAME); 233 /* Print the driver version only once. */ 234 if (first_ctlr) { 235 printf("3ware device driver for 9000 series storage " 236 "controllers, version: %s\n", 237 TW_OSL_DRIVER_VERSION_STRING); 238 first_ctlr = 0; 239 } 240 return(0); 241 } 242 return(ENXIO); 243 } 244 245 246 247 /* 248 * Function name: twa_attach 249 * Description: Allocates pci resources; updates sc; adds a node to the 250 * sysctl tree to expose the driver version; makes calls 251 * (to the Common Layer) to initialize ctlr, and to 252 * attach to CAM. 253 * 254 * Input: dev -- bus device corresponding to the ctlr 255 * Output: None 256 * Return value: 0 -- success 257 * non-zero-- failure 258 */ 259 static TW_INT32 260 twa_attach(device_t dev) 261 { 262 struct twa_softc *sc = device_get_softc(dev); 263 TW_UINT32 command; 264 TW_INT32 bar_num; 265 TW_INT32 bar0_offset; 266 TW_INT32 bar_size; 267 TW_INT32 error; 268 269 tw_osli_dbg_dprintf(3, sc, "entered"); 270 271 sc->ctlr_handle.osl_ctlr_ctxt = sc; 272 273 /* Initialize the softc structure. */ 274 sc->bus_dev = dev; 275 sc->device_id = pci_get_device(dev); 276 277 /* Initialize the mutexes right here. */ 278 sc->io_lock = &(sc->io_lock_handle); 279 mtx_init(sc->io_lock, "tw_osl_io_lock", NULL, MTX_SPIN); 280 sc->q_lock = &(sc->q_lock_handle); 281 mtx_init(sc->q_lock, "tw_osl_q_lock", NULL, MTX_SPIN); 282 283 sysctl_ctx_init(&sc->sysctl_ctxt); 284 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctxt, 285 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 286 device_get_nameunit(dev), CTLFLAG_RD, 0, ""); 287 if (sc->sysctl_tree == NULL) { 288 tw_osli_printf(sc, "error = %d", 289 TW_CL_SEVERITY_ERROR_STRING, 290 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 291 0x2000, 292 "Cannot add sysctl tree node", 293 ENXIO); 294 return(ENXIO); 295 } 296 SYSCTL_ADD_STRING(&sc->sysctl_ctxt, SYSCTL_CHILDREN(sc->sysctl_tree), 297 OID_AUTO, "driver_version", CTLFLAG_RD, 298 TW_OSL_DRIVER_VERSION_STRING, 0, "TWA driver version"); 299 300 /* Make sure we are going to be able to talk to this board. */ 301 command = pci_read_config(dev, PCIR_COMMAND, 2); 302 if ((command & PCIM_CMD_PORTEN) == 0) { 303 tw_osli_printf(sc, "error = %d", 304 TW_CL_SEVERITY_ERROR_STRING, 305 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 306 0x2001, 307 "Register window not available", 308 ENXIO); 309 tw_osli_free_resources(sc); 310 return(ENXIO); 311 } 312 313 /* Force the busmaster enable bit on, in case the BIOS forgot. */ 314 command |= PCIM_CMD_BUSMASTEREN; 315 pci_write_config(dev, PCIR_COMMAND, command, 2); 316 317 /* Allocate the PCI register window. */ 318 if ((error = tw_cl_get_pci_bar_info(sc->device_id, TW_CL_BAR_TYPE_MEM, 319 &bar_num, &bar0_offset, &bar_size))) { 320 tw_osli_printf(sc, "error = %d", 321 TW_CL_SEVERITY_ERROR_STRING, 322 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 323 0x201F, 324 "Can't get PCI BAR info", 325 error); 326 tw_osli_free_resources(sc); 327 return(error); 328 } 329 sc->reg_res_id = PCIR_BARS + bar0_offset; 330 if ((sc->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 331 &(sc->reg_res_id), 0, ~0, 1, RF_ACTIVE)) 332 == NULL) { 333 tw_osli_printf(sc, "error = %d", 334 TW_CL_SEVERITY_ERROR_STRING, 335 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 336 0x2002, 337 "Can't allocate register window", 338 ENXIO); 339 tw_osli_free_resources(sc); 340 return(ENXIO); 341 } 342 sc->bus_tag = rman_get_bustag(sc->reg_res); 343 sc->bus_handle = rman_get_bushandle(sc->reg_res); 344 345 /* Allocate and register our interrupt. */ 346 sc->irq_res_id = 0; 347 if ((sc->irq_res = bus_alloc_resource(sc->bus_dev, SYS_RES_IRQ, 348 &(sc->irq_res_id), 0, ~0, 1, 349 RF_SHAREABLE | RF_ACTIVE)) == NULL) { 350 tw_osli_printf(sc, "error = %d", 351 TW_CL_SEVERITY_ERROR_STRING, 352 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 353 0x2003, 354 "Can't allocate interrupt", 355 ENXIO); 356 tw_osli_free_resources(sc); 357 return(ENXIO); 358 } 359 if ((error = bus_setup_intr(sc->bus_dev, sc->irq_res, 360 ((mp_ncpus > 1) ? (INTR_MPSAFE 361 #ifdef TW_OSLI_DEFERRED_INTR_USED 362 | INTR_FAST 363 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 364 ) : 0) | INTR_TYPE_CAM, 365 twa_pci_intr, sc, &sc->intr_handle))) { 366 tw_osli_printf(sc, "error = %d", 367 TW_CL_SEVERITY_ERROR_STRING, 368 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 369 0x2004, 370 "Can't set up interrupt", 371 error); 372 tw_osli_free_resources(sc); 373 return(error); 374 } 375 376 #ifdef TW_OSLI_DEFERRED_INTR_USED 377 TASK_INIT(&sc->deferred_intr_callback, 0, twa_deferred_intr, sc); 378 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 379 380 if ((error = tw_osli_alloc_mem(sc))) { 381 tw_osli_printf(sc, "error = %d", 382 TW_CL_SEVERITY_ERROR_STRING, 383 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 384 0x2005, 385 "Memory allocation failure", 386 error); 387 tw_osli_free_resources(sc); 388 return(error); 389 } 390 391 /* Initialize the Common Layer for this controller. */ 392 if ((error = tw_cl_init_ctlr(&sc->ctlr_handle, sc->flags, sc->device_id, 393 TW_OSLI_MAX_NUM_IOS, TW_OSLI_MAX_NUM_AENS, 394 sc->non_dma_mem, sc->dma_mem, 395 sc->dma_mem_phys 396 #ifdef TW_OSL_FLASH_FIRMWARE 397 , sc->flash_dma_mem, sc->flash_dma_mem_phys 398 #endif /* TW_OSL_FLASH_FIRMWARE */ 399 ))) { 400 tw_osli_printf(sc, "error = %d", 401 TW_CL_SEVERITY_ERROR_STRING, 402 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 403 0x2006, 404 "Failed to initialize Common Layer/controller", 405 error); 406 tw_osli_free_resources(sc); 407 return(error); 408 } 409 410 #ifdef TW_OSL_FLASH_FIRMWARE 411 /* Free any memory allocated for firmware flashing. */ 412 if (sc->flash_dma_mem) { 413 bus_dmamap_unload(sc->flash_tag, sc->flash_map); 414 bus_dmamem_free(sc->flash_tag, sc->flash_dma_mem, 415 sc->flash_map); 416 } 417 if (sc->flash_tag) 418 bus_dma_tag_destroy(sc->flash_tag); 419 /* 420 * Set flash_tag and flash_dma_mem to 0, so we don't try freeing them 421 * again, later. 422 */ 423 sc->flash_tag = 0; 424 sc->flash_dma_mem = 0; 425 #endif /* TW_OSL_FLASH_FIRMWARE */ 426 427 /* Create the control device. */ 428 sc->ctrl_dev = make_dev(&twa_cdevsw, device_get_unit(sc->bus_dev), 429 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 430 "twa%d", device_get_unit(sc->bus_dev)); 431 sc->ctrl_dev->si_drv1 = sc; 432 433 if ((error = tw_osli_cam_attach(sc))) { 434 tw_osli_free_resources(sc); 435 tw_osli_printf(sc, "error = %d", 436 TW_CL_SEVERITY_ERROR_STRING, 437 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 438 0x2007, 439 "Failed to initialize CAM", 440 error); 441 return(error); 442 } 443 444 return(0); 445 } 446 447 448 449 /* 450 * Function name: tw_osli_alloc_mem 451 * Description: Allocates memory needed both by CL and OSL. 452 * 453 * Input: sc -- OSL internal controller context 454 * Output: None 455 * Return value: 0 -- success 456 * non-zero-- failure 457 */ 458 static TW_INT32 459 tw_osli_alloc_mem(struct twa_softc *sc) 460 { 461 struct tw_osli_req_context *req; 462 TW_UINT32 max_sg_elements; 463 TW_UINT32 non_dma_mem_size; 464 TW_UINT32 dma_mem_size; 465 #ifdef TW_OSL_FLASH_FIRMWARE 466 TW_UINT32 flash_dma_mem_size; 467 #endif /* TW_OSL_FLASH_FIRMWARE */ 468 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 469 TW_UINT32 per_req_dma_mem_size; 470 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 471 TW_INT32 error; 472 TW_INT32 i; 473 474 tw_osli_dbg_dprintf(3, sc, "entered"); 475 476 sc->flags |= (sizeof(bus_addr_t) == 8) ? TW_CL_64BIT_ADDRESSES : 0; 477 sc->flags |= (sizeof(bus_size_t) == 8) ? TW_CL_64BIT_SG_LENGTH : 0; 478 #ifdef TW_OSL_FLASH_FIRMWARE 479 sc->flags |= TW_CL_FLASH_FIRMWARE; 480 #endif /* TW_OSL_FLASH_FIRMWARE */ 481 #ifdef TW_OSLI_DEFERRED_INTR_USED 482 sc->flags |= TW_CL_DEFERRED_INTR_USED; 483 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 484 485 max_sg_elements = (sizeof(bus_addr_t) == 8) ? 486 TW_CL_MAX_64BIT_SG_ELEMENTS : TW_CL_MAX_32BIT_SG_ELEMENTS; 487 488 if ((error = tw_cl_get_mem_requirements(&sc->ctlr_handle, sc->flags, 489 sc->device_id, TW_OSLI_MAX_NUM_IOS, TW_OSLI_MAX_NUM_AENS, 490 &(sc->alignment), &(sc->sg_size_factor), 491 &non_dma_mem_size, &dma_mem_size 492 #ifdef TW_OSL_FLASH_FIRMWARE 493 , &flash_dma_mem_size 494 #endif /* TW_OSL_FLASH_FIRMWARE */ 495 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 496 , &per_req_dma_mem_size 497 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 498 ))) { 499 tw_osli_printf(sc, "error = %d", 500 TW_CL_SEVERITY_ERROR_STRING, 501 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 502 0x2008, 503 "Can't get Common Layer's memory requirements", 504 error); 505 return(error); 506 } 507 508 if ((sc->non_dma_mem = malloc(non_dma_mem_size, TW_OSLI_MALLOC_CLASS, 509 M_WAITOK)) == NULL) { 510 tw_osli_printf(sc, "error = %d", 511 TW_CL_SEVERITY_ERROR_STRING, 512 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 513 0x2009, 514 "Can't allocate non-dma memory", 515 ENOMEM); 516 return(ENOMEM); 517 } 518 519 /* Create the parent dma tag. */ 520 if (bus_dma_tag_create(NULL, /* parent */ 521 sc->alignment, /* alignment */ 522 0, /* boundary */ 523 BUS_SPACE_MAXADDR, /* lowaddr */ 524 BUS_SPACE_MAXADDR, /* highaddr */ 525 NULL, NULL, /* filter, filterarg */ 526 TW_CL_MAX_IO_SIZE, /* maxsize */ 527 max_sg_elements, /* nsegments */ 528 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 529 0, /* flags */ 530 NULL, /* lockfunc */ 531 NULL, /* lockfuncarg */ 532 &sc->parent_tag /* tag */)) { 533 tw_osli_printf(sc, "error = %d", 534 TW_CL_SEVERITY_ERROR_STRING, 535 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 536 0x200A, 537 "Can't allocate parent DMA tag", 538 ENOMEM); 539 return(ENOMEM); 540 } 541 542 /* Create a dma tag for Common Layer's DMA'able memory (dma_mem). */ 543 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 544 sc->alignment, /* alignment */ 545 0, /* boundary */ 546 BUS_SPACE_MAXADDR, /* lowaddr */ 547 BUS_SPACE_MAXADDR, /* highaddr */ 548 NULL, NULL, /* filter, filterarg */ 549 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 550 (TW_OSLI_MAX_NUM_IOS * 551 per_req_dma_mem_size) + 552 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 553 dma_mem_size, /* maxsize */ 554 1, /* nsegments */ 555 BUS_SPACE_MAXSIZE, /* maxsegsize */ 556 0, /* flags */ 557 NULL, /* lockfunc */ 558 NULL, /* lockfuncarg */ 559 &sc->cmd_tag /* tag */)) { 560 tw_osli_printf(sc, "error = %d", 561 TW_CL_SEVERITY_ERROR_STRING, 562 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 563 0x200B, 564 "Can't allocate DMA tag for Common Layer's " 565 "DMA'able memory", 566 ENOMEM); 567 return(ENOMEM); 568 } 569 570 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 571 BUS_DMA_NOWAIT, &sc->cmd_map)) { 572 /* Try a second time. */ 573 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 574 BUS_DMA_NOWAIT, &sc->cmd_map)) { 575 tw_osli_printf(sc, "error = %d", 576 TW_CL_SEVERITY_ERROR_STRING, 577 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 578 0x200C, 579 "Can't allocate DMA'able memory for the" 580 "Common Layer", 581 ENOMEM); 582 return(ENOMEM); 583 } 584 } 585 586 bus_dmamap_load(sc->cmd_tag, sc->cmd_map, sc->dma_mem, 587 dma_mem_size, twa_map_load_callback, 588 &sc->dma_mem_phys, 0); 589 590 591 #ifdef TW_OSL_FLASH_FIRMWARE 592 /* 593 * Create a dma tag for Common Layer's DMA'able memory, 594 * used to flash firmware (flash_dma_mem). 595 */ 596 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 597 sc->alignment, /* alignment */ 598 0, /* boundary */ 599 BUS_SPACE_MAXADDR, /* lowaddr */ 600 BUS_SPACE_MAXADDR, /* highaddr */ 601 NULL, NULL, /* filter, filterarg */ 602 flash_dma_mem_size, /* maxsize */ 603 1, /* nsegments */ 604 flash_dma_mem_size, /* maxsegsize */ 605 0, /* flags */ 606 NULL, /* lockfunc */ 607 NULL, /* lockfuncarg */ 608 &sc->flash_tag /* tag */)) { 609 tw_osli_printf(sc, "error = %d", 610 TW_CL_SEVERITY_ERROR_STRING, 611 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 612 0x200D, 613 "Can't allocate DMA tag for Common Layer's " 614 "firmware flash memory", 615 ENOMEM); 616 return(ENOMEM); 617 } 618 619 if (bus_dmamem_alloc(sc->flash_tag, &sc->flash_dma_mem, 620 BUS_DMA_NOWAIT, &sc->flash_map)) { 621 tw_osli_printf(sc, "error = %d", 622 TW_CL_SEVERITY_ERROR_STRING, 623 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 624 0x200E, 625 "Can't allocate DMA'able memory for Common Layer's " 626 "firmware flash", 627 ENOMEM); 628 return(ENOMEM); 629 } 630 631 bus_dmamap_load(sc->flash_tag, sc->flash_map, sc->flash_dma_mem, 632 flash_dma_mem_size, twa_map_load_callback, 633 &sc->flash_dma_mem_phys, 0); 634 635 #endif /* TW_OSL_FLASH_FIRMWARE */ 636 637 /* 638 * Create a dma tag for data buffers; size will be the maximum 639 * possible I/O size (128kB). 640 */ 641 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 642 sc->alignment, /* alignment */ 643 0, /* boundary */ 644 BUS_SPACE_MAXADDR, /* lowaddr */ 645 BUS_SPACE_MAXADDR, /* highaddr */ 646 NULL, NULL, /* filter, filterarg */ 647 TW_CL_MAX_IO_SIZE, /* maxsize */ 648 max_sg_elements, /* nsegments */ 649 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 650 BUS_DMA_ALLOCNOW, /* flags */ 651 twa_busdma_lock, /* lockfunc */ 652 sc->io_lock, /* lockfuncarg */ 653 &sc->dma_tag /* tag */)) { 654 tw_osli_printf(sc, "error = %d", 655 TW_CL_SEVERITY_ERROR_STRING, 656 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 657 0x200F, 658 "Can't allocate DMA tag for data buffers", 659 ENOMEM); 660 return(ENOMEM); 661 } 662 663 /* 664 * Create a dma tag for ioctl data buffers; size will be the maximum 665 * possible I/O size (128kB). 666 */ 667 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 668 sc->alignment, /* alignment */ 669 0, /* boundary */ 670 BUS_SPACE_MAXADDR, /* lowaddr */ 671 BUS_SPACE_MAXADDR, /* highaddr */ 672 NULL, NULL, /* filter, filterarg */ 673 TW_CL_MAX_IO_SIZE, /* maxsize */ 674 max_sg_elements, /* nsegments */ 675 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 676 BUS_DMA_ALLOCNOW, /* flags */ 677 twa_busdma_lock, /* lockfunc */ 678 sc->io_lock, /* lockfuncarg */ 679 &sc->ioctl_tag /* tag */)) { 680 tw_osli_printf(sc, "error = %d", 681 TW_CL_SEVERITY_ERROR_STRING, 682 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 683 0x2010, 684 "Can't allocate DMA tag for ioctl data buffers", 685 ENOMEM); 686 return(ENOMEM); 687 } 688 689 /* Create just one map for all ioctl request data buffers. */ 690 if (bus_dmamap_create(sc->ioctl_tag, 0, &sc->ioctl_map)) { 691 tw_osli_printf(sc, "error = %d", 692 TW_CL_SEVERITY_ERROR_STRING, 693 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 694 0x2011, 695 "Can't create ioctl map", 696 ENOMEM); 697 return(ENOMEM); 698 } 699 700 701 /* Initialize request queues. */ 702 tw_osli_req_q_init(sc, TW_OSLI_FREE_Q); 703 tw_osli_req_q_init(sc, TW_OSLI_BUSY_Q); 704 705 if ((sc->req_ctxt_buf = (struct tw_osli_req_context *) 706 malloc((sizeof(struct tw_osli_req_context) * 707 TW_OSLI_MAX_NUM_IOS), 708 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 709 tw_osli_printf(sc, "error = %d", 710 TW_CL_SEVERITY_ERROR_STRING, 711 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 712 0x2012, 713 "Failed to allocate request packets", 714 ENOMEM); 715 return(ENOMEM); 716 } 717 bzero(sc->req_ctxt_buf, 718 sizeof(struct tw_osli_req_context) * TW_OSLI_MAX_NUM_IOS); 719 720 for (i = 0; i < TW_OSLI_MAX_NUM_IOS; i++) { 721 req = &(sc->req_ctxt_buf[i]); 722 req->ctlr = sc; 723 if (bus_dmamap_create(sc->dma_tag, 0, &req->dma_map)) { 724 tw_osli_printf(sc, "request # = %d, error = %d", 725 TW_CL_SEVERITY_ERROR_STRING, 726 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 727 0x2013, 728 "Can't create dma map", 729 i, ENOMEM); 730 return(ENOMEM); 731 } 732 733 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 734 735 req->req_pkt.dma_mem = ((TW_INT8 *)(sc->dma_mem)) + 736 (i * per_req_dma_mem_size); 737 req->req_pkt.dma_mem_phys = sc->dma_mem_phys + 738 (i * per_req_dma_mem_size); 739 740 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 741 742 /* Insert request into the free queue. */ 743 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 744 } 745 746 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 747 748 sc->dma_mem = ((TW_INT8 *)(sc->dma_mem)) + 749 (TW_OSLI_MAX_NUM_IOS * per_req_dma_mem_size); 750 sc->dma_mem_phys += (TW_OSLI_MAX_NUM_IOS * per_req_dma_mem_size); 751 752 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 753 754 return(0); 755 } 756 757 758 759 /* 760 * Function name: tw_osli_free_resources 761 * Description: Performs clean-up at the time of going down. 762 * 763 * Input: sc -- ptr to OSL internal ctlr context 764 * Output: None 765 * Return value: None 766 */ 767 static TW_VOID 768 tw_osli_free_resources(struct twa_softc *sc) 769 { 770 struct tw_osli_req_context *req; 771 TW_INT32 error = 0; 772 773 tw_osli_dbg_dprintf(3, sc, "entered"); 774 775 /* Detach from CAM */ 776 tw_osli_cam_detach(sc); 777 778 if (sc->req_ctxt_buf) 779 while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) != 780 NULL) 781 if ((error = bus_dmamap_destroy(sc->dma_tag, 782 req->dma_map))) 783 tw_osli_dbg_dprintf(1, sc, 784 "dmamap_destroy(dma) returned %d", 785 error); 786 787 if ((sc->ioctl_tag) && (sc->ioctl_map)) 788 if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map))) 789 tw_osli_dbg_dprintf(1, sc, 790 "dmamap_destroy(ioctl) returned %d", error); 791 792 /* Free all memory allocated so far. */ 793 if (sc->req_ctxt_buf) 794 free(sc->req_ctxt_buf, TW_OSLI_MALLOC_CLASS); 795 796 if (sc->non_dma_mem) 797 free(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS); 798 799 if (sc->dma_mem) { 800 bus_dmamap_unload(sc->cmd_tag, sc->cmd_map); 801 bus_dmamem_free(sc->cmd_tag, sc->dma_mem, 802 sc->cmd_map); 803 } 804 if (sc->cmd_tag) 805 if ((error = bus_dma_tag_destroy(sc->cmd_tag))) 806 tw_osli_dbg_dprintf(1, sc, 807 "dma_tag_destroy(cmd) returned %d", error); 808 809 810 #ifdef TW_OSL_FLASH_FIRMWARE 811 812 if (sc->flash_dma_mem) { 813 /* In case this piece of memory has already been freed. */ 814 bus_dmamap_unload(sc->flash_tag, sc->flash_map); 815 bus_dmamem_free(sc->flash_tag, sc->flash_dma_mem, 816 sc->flash_map); 817 } 818 if (sc->flash_tag) 819 if ((error = bus_dma_tag_destroy(sc->flash_tag))) 820 tw_osli_dbg_dprintf(1, sc, 821 "dma_tag_destroy(flash) returned %d", error); 822 823 #endif /* TW_OSL_FLASH_FIRMWARE */ 824 825 if (sc->dma_tag) 826 if ((error = bus_dma_tag_destroy(sc->dma_tag))) 827 tw_osli_dbg_dprintf(1, sc, 828 "dma_tag_destroy(dma) returned %d", error); 829 830 if (sc->ioctl_tag) 831 if ((error = bus_dma_tag_destroy(sc->ioctl_tag))) 832 tw_osli_dbg_dprintf(1, sc, 833 "dma_tag_destroy(ioctl) returned %d", error); 834 835 if (sc->parent_tag) 836 if ((error = bus_dma_tag_destroy(sc->parent_tag))) 837 tw_osli_dbg_dprintf(1, sc, 838 "dma_tag_destroy(parent) returned %d", error); 839 840 841 /* Disconnect the interrupt handler. */ 842 if (sc->intr_handle) 843 if ((error = bus_teardown_intr(sc->bus_dev, 844 sc->irq_res, sc->intr_handle))) 845 tw_osli_dbg_dprintf(1, sc, 846 "teardown_intr returned %d", error); 847 848 if (sc->irq_res != NULL) 849 if ((error = bus_release_resource(sc->bus_dev, 850 SYS_RES_IRQ, sc->irq_res_id, sc->irq_res))) 851 tw_osli_dbg_dprintf(1, sc, 852 "release_resource(irq) returned %d", error); 853 854 855 /* Release the register window mapping. */ 856 if (sc->reg_res != NULL) 857 if ((error = bus_release_resource(sc->bus_dev, 858 SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))) 859 tw_osli_dbg_dprintf(1, sc, 860 "release_resource(io) returned %d", error); 861 862 863 /* Destroy the control device. */ 864 if (sc->ctrl_dev != (struct cdev *)NULL) 865 destroy_dev(sc->ctrl_dev); 866 867 if ((error = sysctl_ctx_free(&sc->sysctl_ctxt))) 868 tw_osli_dbg_dprintf(1, sc, 869 "sysctl_ctx_free returned %d", error); 870 871 } 872 873 874 875 /* 876 * Function name: twa_detach 877 * Description: Called when the controller is being detached from 878 * the pci bus. 879 * 880 * Input: dev -- bus device corresponding to the ctlr 881 * Output: None 882 * Return value: 0 -- success 883 * non-zero-- failure 884 */ 885 static TW_INT32 886 twa_detach(device_t dev) 887 { 888 struct twa_softc *sc = device_get_softc(dev); 889 TW_INT32 error; 890 891 tw_osli_dbg_dprintf(3, sc, "entered"); 892 893 error = EBUSY; 894 if (sc->state & TW_OSLI_CTLR_STATE_OPEN) { 895 tw_osli_printf(sc, "error = %d", 896 TW_CL_SEVERITY_ERROR_STRING, 897 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 898 0x2014, 899 "Device open", 900 error); 901 goto out; 902 } 903 904 /* Shut the controller down. */ 905 if ((error = twa_shutdown(dev))) 906 goto out; 907 908 /* Free all resources associated with this controller. */ 909 tw_osli_free_resources(sc); 910 error = 0; 911 912 out: 913 return(error); 914 } 915 916 917 918 /* 919 * Function name: twa_shutdown 920 * Description: Called at unload/shutdown time. Lets the controller 921 * know that we are going down. 922 * 923 * Input: dev -- bus device corresponding to the ctlr 924 * Output: None 925 * Return value: 0 -- success 926 * non-zero-- failure 927 */ 928 static TW_INT32 929 twa_shutdown(device_t dev) 930 { 931 struct twa_softc *sc = device_get_softc(dev); 932 TW_INT32 error = 0; 933 934 tw_osli_dbg_dprintf(3, sc, "entered"); 935 936 /* Disconnect from the controller. */ 937 if ((error = tw_cl_shutdown_ctlr(&(sc->ctlr_handle), 0))) { 938 tw_osli_printf(sc, "error = %d", 939 TW_CL_SEVERITY_ERROR_STRING, 940 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 941 0x2015, 942 "Failed to shutdown Common Layer/controller", 943 error); 944 } 945 return(error); 946 } 947 948 949 950 /* 951 * Function name: twa_busdma_lock 952 * Description: Function to provide synchronization during busdma_swi. 953 * 954 * Input: lock_arg -- lock mutex sent as argument 955 * op -- operation (lock/unlock) expected of the function 956 * Output: None 957 * Return value: None 958 */ 959 TW_VOID 960 twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op) 961 { 962 struct mtx *lock; 963 964 lock = (struct mtx *)lock_arg; 965 switch (op) { 966 case BUS_DMA_LOCK: 967 mtx_lock_spin(lock); 968 break; 969 970 case BUS_DMA_UNLOCK: 971 mtx_unlock_spin(lock); 972 break; 973 974 default: 975 panic("Unknown operation 0x%x for twa_busdma_lock!", op); 976 } 977 } 978 979 980 981 /* 982 * Function name: twa_pci_intr 983 * Description: Interrupt handler. Wrapper for twa_interrupt. 984 * 985 * Input: arg -- ptr to OSL internal ctlr context 986 * Output: None 987 * Return value: None 988 */ 989 static TW_VOID 990 twa_pci_intr(TW_VOID *arg) 991 { 992 struct twa_softc *sc = (struct twa_softc *)arg; 993 994 tw_osli_dbg_dprintf(10, sc, "entered"); 995 if (tw_cl_interrupt(&(sc->ctlr_handle))) 996 #ifdef TW_OSLI_DEFERRED_INTR_USED 997 taskqueue_enqueue_fast(taskqueue_fast, 998 &(sc->deferred_intr_callback)); 999 #else /* TW_OSLI_DEFERRED_INTR_USED */ 1000 tw_cl_deferred_interrupt(&(sc->ctlr_handle)); 1001 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 1002 } 1003 1004 1005 1006 #ifdef TW_OSLI_DEFERRED_INTR_USED 1007 1008 /* 1009 * Function name: twa_deferred_intr 1010 * Description: Deferred interrupt handler. 1011 * 1012 * Input: context -- ptr to OSL internal ctlr context 1013 * pending -- not used 1014 * Output: None 1015 * Return value: None 1016 */ 1017 static TW_VOID 1018 twa_deferred_intr(TW_VOID *context, TW_INT32 pending) 1019 { 1020 struct twa_softc *sc = (struct twa_softc *)context; 1021 1022 tw_osli_dbg_dprintf(10, sc, "entered"); 1023 1024 tw_cl_deferred_interrupt(&(sc->ctlr_handle)); 1025 } 1026 1027 #endif /* TW_OSLI_DEFERRED_INTR_USED */ 1028 1029 1030 1031 /* 1032 * Function name: tw_osli_fw_passthru 1033 * Description: Builds a fw passthru cmd pkt, and submits it to CL. 1034 * 1035 * Input: sc -- ptr to OSL internal ctlr context 1036 * buf -- ptr to ioctl pkt understood by CL 1037 * Output: None 1038 * Return value: 0 -- success 1039 * non-zero-- failure 1040 */ 1041 TW_INT32 1042 tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf) 1043 { 1044 struct tw_osli_req_context *req; 1045 struct tw_osli_ioctl_no_data_buf *user_buf = 1046 (struct tw_osli_ioctl_no_data_buf *)buf; 1047 TW_TIME end_time; 1048 TW_UINT32 timeout = 60; 1049 TW_UINT32 data_buf_size_adjusted; 1050 struct tw_cl_req_packet *req_pkt; 1051 struct tw_cl_passthru_req_packet *pt_req; 1052 TW_INT32 error; 1053 1054 tw_osli_dbg_dprintf(5, sc, "ioctl: passthru"); 1055 1056 if ((req = tw_osli_get_request(sc)) == NULL) 1057 return(EBUSY); 1058 1059 req->req_handle.osl_req_ctxt = req; 1060 req->orig_req = buf; 1061 req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU; 1062 1063 req_pkt = &(req->req_pkt); 1064 req_pkt->status = 0; 1065 req_pkt->tw_osl_callback = tw_osl_complete_passthru; 1066 /* Let the Common Layer retry the request on cmd queue full. */ 1067 req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY; 1068 1069 pt_req = &(req_pkt->gen_req_pkt.pt_req); 1070 /* 1071 * Make sure that the data buffer sent to firmware is a 1072 * 512 byte multiple in size. 1073 */ 1074 data_buf_size_adjusted = 1075 (user_buf->driver_pkt.buffer_length + 1076 (sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1); 1077 if ((req->length = data_buf_size_adjusted)) { 1078 if ((req->data = malloc(data_buf_size_adjusted, 1079 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 1080 error = ENOMEM; 1081 tw_osli_printf(sc, "error = %d", 1082 TW_CL_SEVERITY_ERROR_STRING, 1083 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1084 0x2016, 1085 "Could not alloc mem for " 1086 "fw_passthru data_buf", 1087 error); 1088 goto fw_passthru_err; 1089 } 1090 /* Copy the payload. */ 1091 if ((error = copyin((TW_VOID *)(user_buf->pdata), 1092 req->data, 1093 user_buf->driver_pkt.buffer_length)) != 0) { 1094 tw_osli_printf(sc, "error = %d", 1095 TW_CL_SEVERITY_ERROR_STRING, 1096 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1097 0x2017, 1098 "Could not copyin fw_passthru data_buf", 1099 error); 1100 goto fw_passthru_err; 1101 } 1102 pt_req->sgl_entries = 1; /* will be updated during mapping */ 1103 req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN | 1104 TW_OSLI_REQ_FLAGS_DATA_OUT); 1105 } else 1106 pt_req->sgl_entries = 0; /* no payload */ 1107 1108 pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt)); 1109 pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet); 1110 1111 if ((error = tw_osli_map_request(req))) 1112 goto fw_passthru_err; 1113 1114 end_time = tw_osl_get_local_time() + timeout; 1115 while (req->state != TW_OSLI_REQ_STATE_COMPLETE) { 1116 req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING; 1117 1118 error = tsleep(req, PRIBIO, "twa_passthru", timeout * hz); 1119 1120 if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING)) 1121 error = 0; 1122 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1123 1124 if (! error) { 1125 if (((error = req->error_code)) || 1126 ((error = (req->state != 1127 TW_OSLI_REQ_STATE_COMPLETE))) || 1128 ((error = req_pkt->status))) 1129 goto fw_passthru_err; 1130 break; 1131 } 1132 1133 if (req_pkt->status) { 1134 error = req_pkt->status; 1135 goto fw_passthru_err; 1136 } 1137 1138 if (error == EWOULDBLOCK) { 1139 /* Time out! */ 1140 tw_osli_printf(sc, "request = %p", 1141 TW_CL_SEVERITY_ERROR_STRING, 1142 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1143 0x2018, 1144 "Passthru request timed out!", 1145 req); 1146 /* 1147 * Should I check here if the timeout happened 1148 * because of yet another reset, and not do a 1149 * second reset? 1150 */ 1151 tw_cl_reset_ctlr(&sc->ctlr_handle); 1152 /* 1153 * Don't touch req after a reset. It (and any 1154 * associated data) will already have been 1155 * freed by the callback. Just return. 1156 */ 1157 user_buf->driver_pkt.os_status = error; 1158 return(ETIMEDOUT); 1159 } 1160 /* 1161 * Either the request got completed, or we were woken up by a 1162 * signal. Calculate the new timeout, in case it was the latter. 1163 */ 1164 timeout = (end_time - tw_osl_get_local_time()); 1165 } 1166 1167 /* If there was a payload, copy it back. */ 1168 if ((!error) && (req->length)) 1169 if ((error = copyout(req->data, user_buf->pdata, 1170 user_buf->driver_pkt.buffer_length))) 1171 tw_osli_printf(sc, "error = %d", 1172 TW_CL_SEVERITY_ERROR_STRING, 1173 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1174 0x2019, 1175 "Could not copyout fw_passthru data_buf", 1176 error); 1177 1178 fw_passthru_err: 1179 /* 1180 * Print the failure message. For some reason, on certain OS versions, 1181 * printing this error message during reset hangs the display (although 1182 * the rest of the system is running fine. So, don't print it if the 1183 * failure was due to a reset. 1184 */ 1185 if ((error) && (error != TW_CL_ERR_REQ_BUS_RESET)) 1186 tw_osli_printf(sc, "error = %d", 1187 TW_CL_SEVERITY_ERROR_STRING, 1188 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1189 0x201A, 1190 "Firmware passthru failed!", 1191 error); 1192 1193 user_buf->driver_pkt.os_status = error; 1194 /* Free resources. */ 1195 if (req->data) 1196 free(req->data, TW_OSLI_MALLOC_CLASS); 1197 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1198 return(error); 1199 } 1200 1201 1202 1203 /* 1204 * Function name: tw_osl_complete_passthru 1205 * Description: Called to complete passthru requests. 1206 * 1207 * Input: req_handle -- ptr to request handle 1208 * Output: None 1209 * Return value: None 1210 */ 1211 TW_VOID 1212 tw_osl_complete_passthru(struct tw_cl_req_handle *req_handle) 1213 { 1214 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 1215 struct twa_softc *sc = req->ctlr; 1216 1217 tw_osli_dbg_dprintf(5, sc, "entered"); 1218 1219 if (req->state != TW_OSLI_REQ_STATE_BUSY) { 1220 tw_osli_printf(sc, "request = %p, status = %d", 1221 TW_CL_SEVERITY_ERROR_STRING, 1222 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1223 0x201B, 1224 "Unposted command completed!!", 1225 req, req->state); 1226 } 1227 1228 /* 1229 * Remove request from the busy queue. Just mark it complete. 1230 * There's no need to move it into the complete queue as we are 1231 * going to be done with it right now. 1232 */ 1233 req->state = TW_OSLI_REQ_STATE_COMPLETE; 1234 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 1235 1236 tw_osli_unmap_request(req); 1237 1238 /* 1239 * Don't do a wake up if there was an error even before the request 1240 * was sent down to the Common Layer, and we hadn't gotten an 1241 * EINPROGRESS. The request originator will then be returned an 1242 * error, and he can do the clean-up. 1243 */ 1244 if ((req->error_code) && 1245 (!(req->state & TW_OSLI_REQ_FLAGS_IN_PROGRESS))) 1246 return; 1247 1248 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1249 if (req->flags & TW_OSLI_REQ_FLAGS_SLEEPING) { 1250 /* Wake up the sleeping command originator. */ 1251 tw_osli_dbg_dprintf(5, sc, 1252 "Waking up originator of request %p", req); 1253 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1254 wakeup_one(req); 1255 } else { 1256 /* 1257 * If the request completed even before tsleep 1258 * was called, simply return. 1259 */ 1260 if (req->flags & TW_OSLI_REQ_FLAGS_MAPPED) 1261 return; 1262 1263 tw_osli_printf(sc, "request = %p", 1264 TW_CL_SEVERITY_ERROR_STRING, 1265 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1266 0x201C, 1267 "Passthru callback called, " 1268 "and caller not sleeping", 1269 req); 1270 } 1271 } else { 1272 tw_osli_printf(sc, "request = %p", 1273 TW_CL_SEVERITY_ERROR_STRING, 1274 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1275 0x201D, 1276 "Passthru callback called for non-passthru request", 1277 req); 1278 } 1279 } 1280 1281 1282 1283 /* 1284 * Function name: tw_osli_get_request 1285 * Description: Gets a request pkt from the free queue. 1286 * 1287 * Input: sc -- ptr to OSL internal ctlr context 1288 * Output: None 1289 * Return value: ptr to request pkt -- success 1290 * NULL -- failure 1291 */ 1292 struct tw_osli_req_context * 1293 tw_osli_get_request(struct twa_softc *sc) 1294 { 1295 struct tw_osli_req_context *req; 1296 1297 tw_osli_dbg_dprintf(4, sc, "entered"); 1298 1299 /* Get a free request packet. */ 1300 req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q); 1301 1302 /* Initialize some fields to their defaults. */ 1303 if (req) { 1304 req->req_handle.osl_req_ctxt = NULL; 1305 req->req_handle.cl_req_ctxt = NULL; 1306 req->data = NULL; 1307 req->length = 0; 1308 req->real_data = NULL; 1309 req->real_length = 0; 1310 req->state = TW_OSLI_REQ_STATE_INIT;/* req being initialized */ 1311 req->flags = 0; 1312 req->error_code = 0; 1313 req->orig_req = NULL; 1314 1315 #ifdef TW_OSL_DMA_MEM_ALLOC_PER_REQUEST 1316 1317 /* Don't zero dma_mem & dma_mem_phys in req_pkt. */ 1318 req->req_pkt.cmd = 0; 1319 req->req_pkt.flags = 0; 1320 req->req_pkt.status = 0; 1321 req->req_pkt.tw_osl_callback = NULL; 1322 bzero(&(req->req_pkt.gen_req_pkt), 1323 sizeof(req->req_pkt.gen_req_pkt)); 1324 1325 #else /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 1326 1327 bzero(&(req->req_pkt), sizeof(struct tw_cl_req_packet)); 1328 1329 #endif /* TW_OSL_DMA_MEM_ALLOC_PER_REQUEST */ 1330 } 1331 return(req); 1332 } 1333 1334 1335 1336 /* 1337 * Function name: twa_map_load_data_callback 1338 * Description: Callback of bus_dmamap_load for the buffer associated 1339 * with data. Updates the cmd pkt (size/sgl_entries 1340 * fields, as applicable) to reflect the number of sg 1341 * elements. 1342 * 1343 * Input: arg -- ptr to OSL internal request context 1344 * segs -- ptr to a list of segment descriptors 1345 * nsegments--# of segments 1346 * error -- 0 if no errors encountered before callback, 1347 * non-zero if errors were encountered 1348 * Output: None 1349 * Return value: None 1350 */ 1351 static TW_VOID 1352 twa_map_load_data_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1353 TW_INT32 nsegments, TW_INT32 error) 1354 { 1355 struct tw_osli_req_context *req = 1356 (struct tw_osli_req_context *)arg; 1357 struct twa_softc *sc = req->ctlr; 1358 struct tw_cl_req_packet *req_pkt = &(req->req_pkt); 1359 1360 tw_osli_dbg_dprintf(10, sc, "entered"); 1361 1362 /* Mark the request as currently being processed. */ 1363 req->state = TW_OSLI_REQ_STATE_BUSY; 1364 /* Move the request into the busy queue. */ 1365 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1366 1367 req->flags |= TW_OSLI_REQ_FLAGS_MAPPED; 1368 if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS) 1369 tw_osli_allow_new_requests(sc, (TW_VOID *)(req->orig_req)); 1370 1371 if (error == EFBIG) { 1372 req->error_code = error; 1373 goto out; 1374 } 1375 1376 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1377 struct tw_cl_passthru_req_packet *pt_req; 1378 1379 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1380 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1381 BUS_DMASYNC_PREREAD); 1382 1383 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1384 /* 1385 * If we're using an alignment buffer, and we're 1386 * writing data, copy the real data out. 1387 */ 1388 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1389 bcopy(req->real_data, req->data, req->real_length); 1390 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1391 BUS_DMASYNC_PREWRITE); 1392 } 1393 1394 pt_req = &(req_pkt->gen_req_pkt.pt_req); 1395 pt_req->sg_list = (TW_UINT8 *)segs; 1396 pt_req->sgl_entries += (nsegments - 1); 1397 error = tw_cl_fw_passthru(&(sc->ctlr_handle), req_pkt, 1398 &(req->req_handle)); 1399 } else { 1400 struct tw_cl_scsi_req_packet *scsi_req; 1401 1402 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1403 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1404 BUS_DMASYNC_PREREAD); 1405 1406 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1407 /* 1408 * If we're using an alignment buffer, and we're 1409 * writing data, copy the real data out. 1410 */ 1411 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1412 bcopy(req->real_data, req->data, req->real_length); 1413 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1414 BUS_DMASYNC_PREWRITE); 1415 } 1416 1417 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 1418 scsi_req->sg_list = (TW_UINT8 *)segs; 1419 scsi_req->sgl_entries += (nsegments - 1); 1420 error = tw_cl_start_io(&(sc->ctlr_handle), req_pkt, 1421 &(req->req_handle)); 1422 } 1423 1424 out: 1425 if (error) { 1426 req->error_code = error; 1427 req_pkt->tw_osl_callback(&(req->req_handle)); 1428 /* 1429 * If the caller had been returned EINPROGRESS, and he has 1430 * registered a callback for handling completion, the callback 1431 * will never get called because we were unable to submit the 1432 * request. So, free up the request right here. 1433 */ 1434 if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS) 1435 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1436 } 1437 } 1438 1439 1440 1441 /* 1442 * Function name: twa_map_load_callback 1443 * Description: Callback of bus_dmamap_load for the buffer associated 1444 * with a cmd pkt. 1445 * 1446 * Input: arg -- ptr to variable to hold phys addr 1447 * segs -- ptr to a list of segment descriptors 1448 * nsegments--# of segments 1449 * error -- 0 if no errors encountered before callback, 1450 * non-zero if errors were encountered 1451 * Output: None 1452 * Return value: None 1453 */ 1454 static TW_VOID 1455 twa_map_load_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1456 TW_INT32 nsegments, TW_INT32 error) 1457 { 1458 *((bus_addr_t *)arg) = segs[0].ds_addr; 1459 } 1460 1461 1462 1463 /* 1464 * Function name: tw_osli_map_request 1465 * Description: Maps a cmd pkt and data associated with it, into 1466 * DMA'able memory. 1467 * 1468 * Input: req -- ptr to request pkt 1469 * Output: None 1470 * Return value: 0 -- success 1471 * non-zero-- failure 1472 */ 1473 TW_INT32 1474 tw_osli_map_request(struct tw_osli_req_context *req) 1475 { 1476 struct twa_softc *sc = req->ctlr; 1477 TW_INT32 error = 0; 1478 1479 tw_osli_dbg_dprintf(10, sc, "entered"); 1480 1481 /* If the command involves data, map that too. */ 1482 if (req->data != NULL) { 1483 /* 1484 * It's sufficient for the data pointer to be 4-byte aligned 1485 * to work with 9000. However, if 4-byte aligned addresses 1486 * are passed to bus_dmamap_load, we can get back sg elements 1487 * that are not 512-byte multiples in size. So, we will let 1488 * only those buffers that are 512-byte aligned to pass 1489 * through, and bounce the rest, so as to make sure that we 1490 * always get back sg elements that are 512-byte multiples 1491 * in size. 1492 */ 1493 if (((vm_offset_t)req->data % sc->sg_size_factor) || 1494 (req->length % sc->sg_size_factor)) { 1495 req->flags |= TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED; 1496 /* Save original data pointer and length. */ 1497 req->real_data = req->data; 1498 req->real_length = req->length; 1499 req->length = (req->length + 1500 (sc->sg_size_factor - 1)) & 1501 ~(sc->sg_size_factor - 1); 1502 req->data = malloc(req->length, TW_OSLI_MALLOC_CLASS, 1503 M_NOWAIT); 1504 if (req->data == NULL) { 1505 tw_osli_printf(sc, "error = %d", 1506 TW_CL_SEVERITY_ERROR_STRING, 1507 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1508 0x201E, 1509 "Failed to allocate memory " 1510 "for bounce buffer", 1511 ENOMEM); 1512 /* Restore original data pointer and length. */ 1513 req->data = req->real_data; 1514 req->length = req->real_length; 1515 return(ENOMEM); 1516 } 1517 } 1518 1519 /* 1520 * Map the data buffer into bus space and build the SG list. 1521 */ 1522 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1523 /* Lock against multiple simultaneous ioctl calls. */ 1524 mtx_lock_spin(sc->io_lock); 1525 error = bus_dmamap_load(sc->ioctl_tag, sc->ioctl_map, 1526 req->data, req->length, 1527 twa_map_load_data_callback, req, 1528 BUS_DMA_WAITOK); 1529 mtx_unlock_spin(sc->io_lock); 1530 } else { 1531 /* 1532 * There's only one CAM I/O thread running at a time. 1533 * So, there's no need to hold the io_lock. 1534 */ 1535 error = bus_dmamap_load(sc->dma_tag, req->dma_map, 1536 req->data, req->length, 1537 twa_map_load_data_callback, req, 1538 BUS_DMA_WAITOK); 1539 } 1540 1541 if (!error) 1542 error = req->error_code; 1543 else { 1544 if (error == EINPROGRESS) { 1545 /* 1546 * Specifying sc->io_lock as the lockfuncarg 1547 * in ...tag_create should protect the access 1548 * of ...FLAGS_MAPPED from the callback. 1549 */ 1550 mtx_lock_spin(sc->io_lock); 1551 if (!(req->flags & TW_OSLI_REQ_FLAGS_MAPPED)) { 1552 req->flags |= 1553 TW_OSLI_REQ_FLAGS_IN_PROGRESS; 1554 tw_osli_disallow_new_requests(sc); 1555 } 1556 mtx_unlock_spin(sc->io_lock); 1557 error = 0; 1558 } else { 1559 /* Free alignment buffer if it was used. */ 1560 if (req->flags & 1561 TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1562 free(req->data, TW_OSLI_MALLOC_CLASS); 1563 /* 1564 * Restore original data pointer 1565 * and length. 1566 */ 1567 req->data = req->real_data; 1568 req->length = req->real_length; 1569 } 1570 } 1571 } 1572 1573 } else { 1574 /* Mark the request as currently being processed. */ 1575 req->state = TW_OSLI_REQ_STATE_BUSY; 1576 /* Move the request into the busy queue. */ 1577 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1578 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) 1579 error = tw_cl_fw_passthru(&sc->ctlr_handle, 1580 &(req->req_pkt), &(req->req_handle)); 1581 else 1582 error = tw_cl_start_io(&sc->ctlr_handle, 1583 &(req->req_pkt), &(req->req_handle)); 1584 if (error) { 1585 req->error_code = error; 1586 req->req_pkt.tw_osl_callback(&(req->req_handle)); 1587 } 1588 } 1589 return(error); 1590 } 1591 1592 1593 1594 /* 1595 * Function name: tw_osli_unmap_request 1596 * Description: Undoes the mapping done by tw_osli_map_request. 1597 * 1598 * Input: req -- ptr to request pkt 1599 * Output: None 1600 * Return value: None 1601 */ 1602 TW_VOID 1603 tw_osli_unmap_request(struct tw_osli_req_context *req) 1604 { 1605 struct twa_softc *sc = req->ctlr; 1606 1607 tw_osli_dbg_dprintf(10, sc, "entered"); 1608 1609 /* If the command involved data, unmap that too. */ 1610 if (req->data != NULL) { 1611 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1612 /* Lock against multiple simultaneous ioctl calls. */ 1613 mtx_lock_spin(sc->io_lock); 1614 1615 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1616 bus_dmamap_sync(sc->ioctl_tag, 1617 sc->ioctl_map, BUS_DMASYNC_POSTREAD); 1618 1619 /* 1620 * If we are using a bounce buffer, and we are 1621 * reading data, copy the real data in. 1622 */ 1623 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1624 bcopy(req->data, req->real_data, 1625 req->real_length); 1626 } 1627 1628 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1629 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1630 BUS_DMASYNC_POSTWRITE); 1631 1632 bus_dmamap_unload(sc->ioctl_tag, sc->ioctl_map); 1633 1634 mtx_unlock_spin(sc->io_lock); 1635 } else { 1636 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1637 bus_dmamap_sync(sc->dma_tag, 1638 req->dma_map, BUS_DMASYNC_POSTREAD); 1639 1640 /* 1641 * If we are using a bounce buffer, and we are 1642 * reading data, copy the real data in. 1643 */ 1644 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1645 bcopy(req->data, req->real_data, 1646 req->real_length); 1647 } 1648 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1649 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1650 BUS_DMASYNC_POSTWRITE); 1651 1652 bus_dmamap_unload(sc->dma_tag, req->dma_map); 1653 } 1654 } 1655 1656 /* Free alignment buffer if it was used. */ 1657 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1658 free(req->data, TW_OSLI_MALLOC_CLASS); 1659 /* Restore original data pointer and length. */ 1660 req->data = req->real_data; 1661 req->length = req->real_length; 1662 } 1663 } 1664 1665 1666 1667 #ifdef TW_OSL_DEBUG 1668 1669 TW_VOID twa_report_stats(TW_VOID); 1670 TW_VOID twa_reset_stats(TW_VOID); 1671 TW_VOID tw_osli_print_ctlr_stats(struct twa_softc *sc); 1672 TW_VOID twa_print_req_info(struct tw_osli_req_context *req); 1673 1674 1675 /* 1676 * Function name: twa_report_stats 1677 * Description: For being called from ddb. Calls functions that print 1678 * OSL and CL internal stats for the controller. 1679 * 1680 * Input: None 1681 * Output: None 1682 * Return value: None 1683 */ 1684 TW_VOID 1685 twa_report_stats(TW_VOID) 1686 { 1687 struct twa_softc *sc; 1688 TW_INT32 i; 1689 1690 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1691 tw_osli_print_ctlr_stats(sc); 1692 tw_cl_print_ctlr_stats(&sc->ctlr_handle); 1693 } 1694 } 1695 1696 1697 1698 /* 1699 * Function name: tw_osli_print_ctlr_stats 1700 * Description: For being called from ddb. Prints OSL controller stats 1701 * 1702 * Input: sc -- ptr to OSL internal controller context 1703 * Output: None 1704 * Return value: None 1705 */ 1706 TW_VOID 1707 tw_osli_print_ctlr_stats(struct twa_softc *sc) 1708 { 1709 twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc); 1710 twa_printf(sc, "OSLq type current max\n"); 1711 twa_printf(sc, "free %04d %04d\n", 1712 sc->q_stats[TW_OSLI_FREE_Q].cur_len, 1713 sc->q_stats[TW_OSLI_FREE_Q].max_len); 1714 twa_printf(sc, "busy %04d %04d\n", 1715 sc->q_stats[TW_OSLI_BUSY_Q].cur_len, 1716 sc->q_stats[TW_OSLI_BUSY_Q].max_len); 1717 } 1718 1719 1720 1721 /* 1722 * Function name: twa_print_req_info 1723 * Description: For being called from ddb. Calls functions that print 1724 * OSL and CL internal details for the request. 1725 * 1726 * Input: req -- ptr to OSL internal request context 1727 * Output: None 1728 * Return value: None 1729 */ 1730 TW_VOID 1731 twa_print_req_info(struct tw_osli_req_context *req) 1732 { 1733 struct twa_softc *sc = req->ctlr; 1734 1735 twa_printf(sc, "OSL details for request:\n"); 1736 twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n" 1737 "data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n" 1738 "state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n" 1739 "next_req = %p, prev_req = %p, dma_map = %p\n", 1740 req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt, 1741 req->data, req->length, req->real_data, req->real_length, 1742 req->state, req->flags, req->error_code, req->orig_req, 1743 req->link.next, req->link.prev, req->dma_map); 1744 tw_cl_print_req_info(&(req->req_handle)); 1745 } 1746 1747 1748 1749 /* 1750 * Function name: twa_reset_stats 1751 * Description: For being called from ddb. 1752 * Resets some OSL controller stats. 1753 * 1754 * Input: None 1755 * Output: None 1756 * Return value: None 1757 */ 1758 TW_VOID 1759 twa_reset_stats(TW_VOID) 1760 { 1761 struct twa_softc *sc; 1762 TW_INT32 i; 1763 1764 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1765 sc->q_stats[TW_OSLI_FREE_Q].max_len = 0; 1766 sc->q_stats[TW_OSLI_BUSY_Q].max_len = 0; 1767 tw_cl_reset_stats(&sc->ctlr_handle); 1768 } 1769 } 1770 1771 #endif /* TW_OSL_DEBUG */
Cache object: b35d052150dc3635f9ef39373e39e2ce
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