1/* 2 * Copyright (c) 2004-07 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 *
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29 * $FreeBSD: head/sys/dev/twa/tw_osl_freebsd.c 208969 2010-06-09 21:40:38Z delphij $
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29 * $FreeBSD: head/sys/dev/twa/tw_osl_freebsd.c 212008 2010-08-30 19:15:04Z delphij $ |
30 */ 31 32/* 33 * AMCC'S 3ware driver for 9000 series storage controllers. 34 * 35 * Author: Vinod Kashyap 36 * Modifications by: Adam Radford 37 * Modifications by: Manjunath Ranganathaiah 38 */ 39 40 41/* 42 * FreeBSD specific functions not related to CAM, and other 43 * miscellaneous functions. 44 */ 45 46 47#include <dev/twa/tw_osl_includes.h> 48#include <dev/twa/tw_cl_fwif.h> 49#include <dev/twa/tw_cl_ioctl.h> 50#include <dev/twa/tw_osl_ioctl.h> 51 52#ifdef TW_OSL_DEBUG 53TW_INT32 TW_DEBUG_LEVEL_FOR_OSL = TW_OSL_DEBUG; 54TW_INT32 TW_OSL_DEBUG_LEVEL_FOR_CL = TW_OSL_DEBUG; 55#endif /* TW_OSL_DEBUG */ 56 57MALLOC_DEFINE(TW_OSLI_MALLOC_CLASS, "twa_commands", "twa commands"); 58 59 60static d_open_t twa_open; 61static d_close_t twa_close; 62static d_ioctl_t twa_ioctl; 63 64static struct cdevsw twa_cdevsw = { 65 .d_version = D_VERSION, 66 .d_open = twa_open, 67 .d_close = twa_close, 68 .d_ioctl = twa_ioctl, 69 .d_name = "twa", 70}; 71 72static devclass_t twa_devclass; 73 74 75/* 76 * Function name: twa_open 77 * Description: Called when the controller is opened. 78 * Simply marks the controller as open. 79 * 80 * Input: dev -- control device corresponding to the ctlr 81 * flags -- mode of open 82 * fmt -- device type (character/block etc.) 83 * proc -- current process 84 * Output: None 85 * Return value: 0 -- success 86 * non-zero-- failure 87 */ 88static TW_INT32 89twa_open(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc) 90{ 91 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 92 93 tw_osli_dbg_dprintf(5, sc, "entered"); 94 sc->open = TW_CL_TRUE; 95 return(0); 96} 97 98 99 100/* 101 * Function name: twa_close 102 * Description: Called when the controller is closed. 103 * Simply marks the controller as not open. 104 * 105 * Input: dev -- control device corresponding to the ctlr 106 * flags -- mode of corresponding open 107 * fmt -- device type (character/block etc.) 108 * proc -- current process 109 * Output: None 110 * Return value: 0 -- success 111 * non-zero-- failure 112 */ 113static TW_INT32 114twa_close(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc) 115{ 116 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 117 118 tw_osli_dbg_dprintf(5, sc, "entered"); 119 sc->open = TW_CL_FALSE; 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 */ 142static TW_INT32 143twa_ioctl(struct cdev *dev, u_long cmd, caddr_t buf, TW_INT32 flags, struct thread *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 172static TW_INT32 twa_probe(device_t dev); 173static TW_INT32 twa_attach(device_t dev); 174static TW_INT32 twa_detach(device_t dev); 175static TW_INT32 twa_shutdown(device_t dev); 176static TW_VOID twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op); 177static TW_VOID twa_pci_intr(TW_VOID *arg);
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178static TW_VOID twa_watchdog(TW_VOID *arg); 179int twa_setup_intr(struct twa_softc *sc); 180int twa_teardown_intr(struct twa_softc *sc); |
181 182static TW_INT32 tw_osli_alloc_mem(struct twa_softc *sc); 183static TW_VOID tw_osli_free_resources(struct twa_softc *sc); 184 185static TW_VOID twa_map_load_data_callback(TW_VOID *arg, 186 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 187static TW_VOID twa_map_load_callback(TW_VOID *arg, 188 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 189 190 191static 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 203static driver_t twa_pci_driver = { 204 "twa", 205 twa_methods, 206 sizeof(struct twa_softc) 207}; 208 209DRIVER_MODULE(twa, pci, twa_pci_driver, twa_devclass, 0, 0); 210MODULE_DEPEND(twa, cam, 1, 1, 1); 211MODULE_DEPEND(twa, pci, 1, 1, 1); 212 213 214/* 215 * Function name: twa_probe 216 * Description: Called at driver load time. Claims 9000 ctlrs. 217 * 218 * Input: dev -- bus device corresponding to the ctlr 219 * Output: None 220 * Return value: <= 0 -- success 221 * > 0 -- failure 222 */ 223static TW_INT32 224twa_probe(device_t dev) 225{ 226 static TW_UINT8 first_ctlr = 1; 227 228 tw_osli_dbg_printf(3, "entered"); 229 230 if (tw_cl_ctlr_supported(pci_get_vendor(dev), pci_get_device(dev))) { 231 device_set_desc(dev, TW_OSLI_DEVICE_NAME); 232 /* Print the driver version only once. */ 233 if (first_ctlr) { 234 printf("3ware device driver for 9000 series storage " 235 "controllers, version: %s\n", 236 TW_OSL_DRIVER_VERSION_STRING); 237 first_ctlr = 0; 238 } 239 return(0); 240 } 241 return(ENXIO); 242} 243
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244int twa_setup_intr(struct twa_softc *sc) 245{ 246 int error = 0; |
247
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248 if (!(sc->intr_handle) && (sc->irq_res)) { 249 error = bus_setup_intr(sc->bus_dev, sc->irq_res, 250 INTR_TYPE_CAM | INTR_MPSAFE, 251 NULL, twa_pci_intr, 252 sc, &sc->intr_handle); 253 } 254 return( error ); 255} |
256
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257 258int twa_teardown_intr(struct twa_softc *sc) 259{ 260 int error = 0; 261 262 if ((sc->intr_handle) && (sc->irq_res)) { 263 error = bus_teardown_intr(sc->bus_dev, 264 sc->irq_res, sc->intr_handle); 265 sc->intr_handle = NULL; 266 } 267 return( error ); 268} 269 270 271 |
272/* 273 * Function name: twa_attach 274 * Description: Allocates pci resources; updates sc; adds a node to the 275 * sysctl tree to expose the driver version; makes calls 276 * (to the Common Layer) to initialize ctlr, and to 277 * attach to CAM. 278 * 279 * Input: dev -- bus device corresponding to the ctlr 280 * Output: None 281 * Return value: 0 -- success 282 * non-zero-- failure 283 */ 284static TW_INT32 285twa_attach(device_t dev) 286{ 287 struct twa_softc *sc = device_get_softc(dev); 288 TW_UINT32 command; 289 TW_INT32 bar_num; 290 TW_INT32 bar0_offset; 291 TW_INT32 bar_size; 292 TW_INT32 error; 293 294 tw_osli_dbg_dprintf(3, sc, "entered"); 295 296 sc->ctlr_handle.osl_ctlr_ctxt = sc; 297 298 /* Initialize the softc structure. */ 299 sc->bus_dev = dev; 300 sc->device_id = pci_get_device(dev); 301 302 /* Initialize the mutexes right here. */ 303 sc->io_lock = &(sc->io_lock_handle); 304 mtx_init(sc->io_lock, "tw_osl_io_lock", NULL, MTX_SPIN); 305 sc->q_lock = &(sc->q_lock_handle); 306 mtx_init(sc->q_lock, "tw_osl_q_lock", NULL, MTX_SPIN); 307 sc->sim_lock = &(sc->sim_lock_handle); 308 mtx_init(sc->sim_lock, "tw_osl_sim_lock", NULL, MTX_DEF | MTX_RECURSE); 309 310 sysctl_ctx_init(&sc->sysctl_ctxt); 311 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctxt, 312 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 313 device_get_nameunit(dev), CTLFLAG_RD, 0, ""); 314 if (sc->sysctl_tree == NULL) { 315 tw_osli_printf(sc, "error = %d", 316 TW_CL_SEVERITY_ERROR_STRING, 317 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 318 0x2000, 319 "Cannot add sysctl tree node", 320 ENXIO); 321 return(ENXIO); 322 } 323 SYSCTL_ADD_STRING(&sc->sysctl_ctxt, SYSCTL_CHILDREN(sc->sysctl_tree), 324 OID_AUTO, "driver_version", CTLFLAG_RD, 325 TW_OSL_DRIVER_VERSION_STRING, 0, "TWA driver version"); 326 327 /* Make sure we are going to be able to talk to this board. */ 328 command = pci_read_config(dev, PCIR_COMMAND, 2); 329 if ((command & PCIM_CMD_PORTEN) == 0) { 330 tw_osli_printf(sc, "error = %d", 331 TW_CL_SEVERITY_ERROR_STRING, 332 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 333 0x2001, 334 "Register window not available", 335 ENXIO); 336 tw_osli_free_resources(sc); 337 return(ENXIO); 338 } 339 340 /* Force the busmaster enable bit on, in case the BIOS forgot. */ 341 command |= PCIM_CMD_BUSMASTEREN; 342 pci_write_config(dev, PCIR_COMMAND, command, 2); 343 344 /* Allocate the PCI register window. */ 345 if ((error = tw_cl_get_pci_bar_info(sc->device_id, TW_CL_BAR_TYPE_MEM, 346 &bar_num, &bar0_offset, &bar_size))) { 347 tw_osli_printf(sc, "error = %d", 348 TW_CL_SEVERITY_ERROR_STRING, 349 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 350 0x201F, 351 "Can't get PCI BAR info", 352 error); 353 tw_osli_free_resources(sc); 354 return(error); 355 } 356 sc->reg_res_id = PCIR_BARS + bar0_offset; 357 if ((sc->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, 358 &(sc->reg_res_id), 0, ~0, 1, RF_ACTIVE)) 359 == NULL) { 360 tw_osli_printf(sc, "error = %d", 361 TW_CL_SEVERITY_ERROR_STRING, 362 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 363 0x2002, 364 "Can't allocate register window", 365 ENXIO); 366 tw_osli_free_resources(sc); 367 return(ENXIO); 368 } 369 sc->bus_tag = rman_get_bustag(sc->reg_res); 370 sc->bus_handle = rman_get_bushandle(sc->reg_res); 371 372 /* Allocate and register our interrupt. */ 373 sc->irq_res_id = 0; 374 if ((sc->irq_res = bus_alloc_resource(sc->bus_dev, SYS_RES_IRQ, 375 &(sc->irq_res_id), 0, ~0, 1, 376 RF_SHAREABLE | RF_ACTIVE)) == NULL) { 377 tw_osli_printf(sc, "error = %d", 378 TW_CL_SEVERITY_ERROR_STRING, 379 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 380 0x2003, 381 "Can't allocate interrupt", 382 ENXIO); 383 tw_osli_free_resources(sc); 384 return(ENXIO); 385 }
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357 if ((error = bus_setup_intr(sc->bus_dev, sc->irq_res,
358 INTR_TYPE_CAM | INTR_MPSAFE,
359 NULL, twa_pci_intr,
360 sc, &sc->intr_handle))) {
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386 if ((error = twa_setup_intr(sc))) { |
387 tw_osli_printf(sc, "error = %d", 388 TW_CL_SEVERITY_ERROR_STRING, 389 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 390 0x2004, 391 "Can't set up interrupt", 392 error); 393 tw_osli_free_resources(sc); 394 return(error); 395 } 396 397 if ((error = tw_osli_alloc_mem(sc))) { 398 tw_osli_printf(sc, "error = %d", 399 TW_CL_SEVERITY_ERROR_STRING, 400 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 401 0x2005, 402 "Memory allocation failure", 403 error); 404 tw_osli_free_resources(sc); 405 return(error); 406 } 407 408 /* Initialize the Common Layer for this controller. */ 409 if ((error = tw_cl_init_ctlr(&sc->ctlr_handle, sc->flags, sc->device_id, 410 TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, 411 sc->non_dma_mem, sc->dma_mem, 412 sc->dma_mem_phys 413 ))) { 414 tw_osli_printf(sc, "error = %d", 415 TW_CL_SEVERITY_ERROR_STRING, 416 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 417 0x2006, 418 "Failed to initialize Common Layer/controller", 419 error); 420 tw_osli_free_resources(sc); 421 return(error); 422 } 423 424 /* Create the control device. */ 425 sc->ctrl_dev = make_dev(&twa_cdevsw, device_get_unit(sc->bus_dev), 426 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 427 "twa%d", device_get_unit(sc->bus_dev)); 428 sc->ctrl_dev->si_drv1 = sc; 429 430 if ((error = tw_osli_cam_attach(sc))) { 431 tw_osli_free_resources(sc); 432 tw_osli_printf(sc, "error = %d", 433 TW_CL_SEVERITY_ERROR_STRING, 434 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 435 0x2007, 436 "Failed to initialize CAM", 437 error); 438 return(error); 439 } 440
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441 sc->watchdog_index = 0; 442 callout_init(&(sc->watchdog_callout[0]), CALLOUT_MPSAFE); 443 callout_init(&(sc->watchdog_callout[1]), CALLOUT_MPSAFE); 444 callout_reset(&(sc->watchdog_callout[0]), 5*hz, twa_watchdog, &sc->ctlr_handle); 445 |
446 return(0); 447} 448 449
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450static TW_VOID 451twa_watchdog(TW_VOID *arg) 452{ 453 struct tw_cl_ctlr_handle *ctlr_handle = 454 (struct tw_cl_ctlr_handle *)arg; 455 struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 456 int i; 457 int i_need_a_reset = 0; 458 int driver_is_active = 0; 459 int my_watchdog_was_pending = 1234; 460 TW_UINT64 current_time; 461 struct tw_osli_req_context *my_req; |
462
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463 464//============================================================================== 465 current_time = (TW_UINT64) (tw_osl_get_local_time()); 466 467 for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { 468 my_req = &(sc->req_ctx_buf[i]); 469 470 if ((my_req->state == TW_OSLI_REQ_STATE_BUSY) && 471 (my_req->deadline) && 472 (my_req->deadline < current_time)) { 473 tw_cl_set_reset_needed(ctlr_handle); 474#ifdef TW_OSL_DEBUG 475 device_printf((sc)->bus_dev, "Request %d timed out! d = %p, c = %p\n", i, (void*)my_req->deadline, (void*)current_time); 476#else /* TW_OSL_DEBUG */ 477 device_printf((sc)->bus_dev, "Request %d timed out!\n", i); 478#endif /* TW_OSL_DEBUG */ 479 break; 480 } 481 } 482//============================================================================== 483 484 i_need_a_reset = tw_cl_is_reset_needed(ctlr_handle); 485 486 i = (int) ((sc->watchdog_index++) & 1); 487 488 driver_is_active = tw_cl_is_active(ctlr_handle); 489 490 if (i_need_a_reset) { 491#ifdef TW_OSL_DEBUG 492 device_printf((sc)->bus_dev, "Watchdog rescheduled in 70 seconds\n"); 493#endif /* TW_OSL_DEBUG */ 494 my_watchdog_was_pending = 495 callout_reset(&(sc->watchdog_callout[i]), 70*hz, twa_watchdog, &sc->ctlr_handle); 496 tw_cl_reset_ctlr(ctlr_handle); 497#ifdef TW_OSL_DEBUG 498 device_printf((sc)->bus_dev, "Watchdog reset completed!\n"); 499#endif /* TW_OSL_DEBUG */ 500 } else if (driver_is_active) { 501 my_watchdog_was_pending = 502 callout_reset(&(sc->watchdog_callout[i]), 5*hz, twa_watchdog, &sc->ctlr_handle); 503 } 504#ifdef TW_OSL_DEBUG 505 if (i_need_a_reset || my_watchdog_was_pending) 506 device_printf((sc)->bus_dev, "i_need_a_reset = %d, " 507 "driver_is_active = %d, my_watchdog_was_pending = %d\n", 508 i_need_a_reset, driver_is_active, my_watchdog_was_pending); 509#endif /* TW_OSL_DEBUG */ 510} 511 512 |
513/* 514 * Function name: tw_osli_alloc_mem 515 * Description: Allocates memory needed both by CL and OSL. 516 * 517 * Input: sc -- OSL internal controller context 518 * Output: None 519 * Return value: 0 -- success 520 * non-zero-- failure 521 */ 522static TW_INT32 523tw_osli_alloc_mem(struct twa_softc *sc) 524{ 525 struct tw_osli_req_context *req; 526 TW_UINT32 max_sg_elements; 527 TW_UINT32 non_dma_mem_size; 528 TW_UINT32 dma_mem_size; 529 TW_INT32 error; 530 TW_INT32 i; 531 532 tw_osli_dbg_dprintf(3, sc, "entered"); 533 534 sc->flags |= (sizeof(bus_addr_t) == 8) ? TW_CL_64BIT_ADDRESSES : 0; 535 sc->flags |= (sizeof(bus_size_t) == 8) ? TW_CL_64BIT_SG_LENGTH : 0; 536 537 max_sg_elements = (sizeof(bus_addr_t) == 8) ? 538 TW_CL_MAX_64BIT_SG_ELEMENTS : TW_CL_MAX_32BIT_SG_ELEMENTS; 539 540 if ((error = tw_cl_get_mem_requirements(&sc->ctlr_handle, sc->flags, 541 sc->device_id, TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, 542 &(sc->alignment), &(sc->sg_size_factor), 543 &non_dma_mem_size, &dma_mem_size 544 ))) { 545 tw_osli_printf(sc, "error = %d", 546 TW_CL_SEVERITY_ERROR_STRING, 547 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 548 0x2008, 549 "Can't get Common Layer's memory requirements", 550 error); 551 return(error); 552 } 553 554 if ((sc->non_dma_mem = malloc(non_dma_mem_size, TW_OSLI_MALLOC_CLASS, 555 M_WAITOK)) == NULL) { 556 tw_osli_printf(sc, "error = %d", 557 TW_CL_SEVERITY_ERROR_STRING, 558 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 559 0x2009, 560 "Can't allocate non-dma memory", 561 ENOMEM); 562 return(ENOMEM); 563 } 564 565 /* Create the parent dma tag. */ 566 if (bus_dma_tag_create(NULL, /* parent */ 567 sc->alignment, /* alignment */ 568 TW_OSLI_DMA_BOUNDARY, /* boundary */ 569 BUS_SPACE_MAXADDR, /* lowaddr */ 570 BUS_SPACE_MAXADDR, /* highaddr */ 571 NULL, NULL, /* filter, filterarg */ 572 TW_CL_MAX_IO_SIZE, /* maxsize */ 573 max_sg_elements, /* nsegments */ 574 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 575 0, /* flags */ 576 NULL, /* lockfunc */ 577 NULL, /* lockfuncarg */ 578 &sc->parent_tag /* tag */)) { 579 tw_osli_printf(sc, "error = %d", 580 TW_CL_SEVERITY_ERROR_STRING, 581 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 582 0x200A, 583 "Can't allocate parent DMA tag", 584 ENOMEM); 585 return(ENOMEM); 586 } 587 588 /* Create a dma tag for Common Layer's DMA'able memory (dma_mem). */ 589 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 590 sc->alignment, /* alignment */ 591 0, /* boundary */ 592 BUS_SPACE_MAXADDR, /* lowaddr */ 593 BUS_SPACE_MAXADDR, /* highaddr */ 594 NULL, NULL, /* filter, filterarg */ 595 dma_mem_size, /* maxsize */ 596 1, /* nsegments */ 597 BUS_SPACE_MAXSIZE, /* maxsegsize */ 598 0, /* flags */ 599 NULL, /* lockfunc */ 600 NULL, /* lockfuncarg */ 601 &sc->cmd_tag /* tag */)) { 602 tw_osli_printf(sc, "error = %d", 603 TW_CL_SEVERITY_ERROR_STRING, 604 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 605 0x200B, 606 "Can't allocate DMA tag for Common Layer's " 607 "DMA'able memory", 608 ENOMEM); 609 return(ENOMEM); 610 } 611 612 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 613 BUS_DMA_NOWAIT, &sc->cmd_map)) { 614 /* Try a second time. */ 615 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 616 BUS_DMA_NOWAIT, &sc->cmd_map)) { 617 tw_osli_printf(sc, "error = %d", 618 TW_CL_SEVERITY_ERROR_STRING, 619 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 620 0x200C, 621 "Can't allocate DMA'able memory for the" 622 "Common Layer", 623 ENOMEM); 624 return(ENOMEM); 625 } 626 } 627 628 bus_dmamap_load(sc->cmd_tag, sc->cmd_map, sc->dma_mem, 629 dma_mem_size, twa_map_load_callback, 630 &sc->dma_mem_phys, 0); 631 632 /* 633 * Create a dma tag for data buffers; size will be the maximum 634 * possible I/O size (128kB). 635 */ 636 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 637 sc->alignment, /* alignment */ 638 0, /* boundary */ 639 BUS_SPACE_MAXADDR, /* lowaddr */ 640 BUS_SPACE_MAXADDR, /* highaddr */ 641 NULL, NULL, /* filter, filterarg */ 642 TW_CL_MAX_IO_SIZE, /* maxsize */ 643 max_sg_elements, /* nsegments */ 644 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 645 BUS_DMA_ALLOCNOW, /* flags */ 646 twa_busdma_lock, /* lockfunc */ 647 sc->io_lock, /* lockfuncarg */ 648 &sc->dma_tag /* tag */)) { 649 tw_osli_printf(sc, "error = %d", 650 TW_CL_SEVERITY_ERROR_STRING, 651 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 652 0x200F, 653 "Can't allocate DMA tag for data buffers", 654 ENOMEM); 655 return(ENOMEM); 656 } 657 658 /* 659 * Create a dma tag for ioctl data buffers; size will be the maximum 660 * possible I/O size (128kB). 661 */ 662 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 663 sc->alignment, /* alignment */ 664 0, /* boundary */ 665 BUS_SPACE_MAXADDR, /* lowaddr */ 666 BUS_SPACE_MAXADDR, /* highaddr */ 667 NULL, NULL, /* filter, filterarg */ 668 TW_CL_MAX_IO_SIZE, /* maxsize */ 669 max_sg_elements, /* nsegments */ 670 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 671 BUS_DMA_ALLOCNOW, /* flags */ 672 twa_busdma_lock, /* lockfunc */ 673 sc->io_lock, /* lockfuncarg */ 674 &sc->ioctl_tag /* tag */)) { 675 tw_osli_printf(sc, "error = %d", 676 TW_CL_SEVERITY_ERROR_STRING, 677 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 678 0x2010, 679 "Can't allocate DMA tag for ioctl data buffers", 680 ENOMEM); 681 return(ENOMEM); 682 } 683 684 /* Create just one map for all ioctl request data buffers. */ 685 if (bus_dmamap_create(sc->ioctl_tag, 0, &sc->ioctl_map)) { 686 tw_osli_printf(sc, "error = %d", 687 TW_CL_SEVERITY_ERROR_STRING, 688 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 689 0x2011, 690 "Can't create ioctl map", 691 ENOMEM); 692 return(ENOMEM); 693 } 694 695 696 /* Initialize request queues. */ 697 tw_osli_req_q_init(sc, TW_OSLI_FREE_Q); 698 tw_osli_req_q_init(sc, TW_OSLI_BUSY_Q); 699 700 if ((sc->req_ctx_buf = (struct tw_osli_req_context *) 701 malloc((sizeof(struct tw_osli_req_context) * 702 TW_OSLI_MAX_NUM_REQUESTS), 703 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 704 tw_osli_printf(sc, "error = %d", 705 TW_CL_SEVERITY_ERROR_STRING, 706 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 707 0x2012, 708 "Failed to allocate request packets", 709 ENOMEM); 710 return(ENOMEM); 711 } 712 bzero(sc->req_ctx_buf, 713 sizeof(struct tw_osli_req_context) * TW_OSLI_MAX_NUM_REQUESTS); 714 715 for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { 716 req = &(sc->req_ctx_buf[i]); 717 req->ctlr = sc; 718 if (bus_dmamap_create(sc->dma_tag, 0, &req->dma_map)) { 719 tw_osli_printf(sc, "request # = %d, error = %d", 720 TW_CL_SEVERITY_ERROR_STRING, 721 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 722 0x2013, 723 "Can't create dma map", 724 i, ENOMEM); 725 return(ENOMEM); 726 } 727 728 /* Initialize the ioctl wakeup/ timeout mutex */ 729 req->ioctl_wake_timeout_lock = &(req->ioctl_wake_timeout_lock_handle); 730 mtx_init(req->ioctl_wake_timeout_lock, "tw_ioctl_wake_timeout_lock", NULL, MTX_DEF); 731 732 /* Insert request into the free queue. */ 733 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 734 } 735 736 return(0); 737} 738 739 740 741/* 742 * Function name: tw_osli_free_resources 743 * Description: Performs clean-up at the time of going down. 744 * 745 * Input: sc -- ptr to OSL internal ctlr context 746 * Output: None 747 * Return value: None 748 */ 749static TW_VOID 750tw_osli_free_resources(struct twa_softc *sc) 751{ 752 struct tw_osli_req_context *req; 753 TW_INT32 error = 0; 754 755 tw_osli_dbg_dprintf(3, sc, "entered"); 756 757 /* Detach from CAM */ 758 tw_osli_cam_detach(sc); 759 760 if (sc->req_ctx_buf) 761 while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) != 762 NULL) { 763 mtx_destroy(req->ioctl_wake_timeout_lock); 764 765 if ((error = bus_dmamap_destroy(sc->dma_tag, 766 req->dma_map))) 767 tw_osli_dbg_dprintf(1, sc, 768 "dmamap_destroy(dma) returned %d", 769 error); 770 } 771 772 if ((sc->ioctl_tag) && (sc->ioctl_map)) 773 if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map))) 774 tw_osli_dbg_dprintf(1, sc, 775 "dmamap_destroy(ioctl) returned %d", error); 776 777 /* Free all memory allocated so far. */ 778 if (sc->req_ctx_buf) 779 free(sc->req_ctx_buf, TW_OSLI_MALLOC_CLASS); 780 781 if (sc->non_dma_mem) 782 free(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS); 783 784 if (sc->dma_mem) { 785 bus_dmamap_unload(sc->cmd_tag, sc->cmd_map); 786 bus_dmamem_free(sc->cmd_tag, sc->dma_mem, 787 sc->cmd_map); 788 } 789 if (sc->cmd_tag) 790 if ((error = bus_dma_tag_destroy(sc->cmd_tag))) 791 tw_osli_dbg_dprintf(1, sc, 792 "dma_tag_destroy(cmd) returned %d", error); 793 794 if (sc->dma_tag) 795 if ((error = bus_dma_tag_destroy(sc->dma_tag))) 796 tw_osli_dbg_dprintf(1, sc, 797 "dma_tag_destroy(dma) returned %d", error); 798 799 if (sc->ioctl_tag) 800 if ((error = bus_dma_tag_destroy(sc->ioctl_tag))) 801 tw_osli_dbg_dprintf(1, sc, 802 "dma_tag_destroy(ioctl) returned %d", error); 803 804 if (sc->parent_tag) 805 if ((error = bus_dma_tag_destroy(sc->parent_tag))) 806 tw_osli_dbg_dprintf(1, sc, 807 "dma_tag_destroy(parent) returned %d", error); 808 809 810 /* Disconnect the interrupt handler. */
|
718 if (sc->intr_handle)
719 if ((error = bus_teardown_intr(sc->bus_dev,
720 sc->irq_res, sc->intr_handle)))
|
811 if ((error = twa_teardown_intr(sc))) |
812 tw_osli_dbg_dprintf(1, sc, 813 "teardown_intr returned %d", error); 814 815 if (sc->irq_res != NULL) 816 if ((error = bus_release_resource(sc->bus_dev, 817 SYS_RES_IRQ, sc->irq_res_id, sc->irq_res))) 818 tw_osli_dbg_dprintf(1, sc, 819 "release_resource(irq) returned %d", error); 820 821 822 /* Release the register window mapping. */ 823 if (sc->reg_res != NULL) 824 if ((error = bus_release_resource(sc->bus_dev, 825 SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))) 826 tw_osli_dbg_dprintf(1, sc, 827 "release_resource(io) returned %d", error); 828 829 830 /* Destroy the control device. */ 831 if (sc->ctrl_dev != (struct cdev *)NULL) 832 destroy_dev(sc->ctrl_dev); 833 834 if ((error = sysctl_ctx_free(&sc->sysctl_ctxt))) 835 tw_osli_dbg_dprintf(1, sc, 836 "sysctl_ctx_free returned %d", error); 837 838} 839 840 841 842/* 843 * Function name: twa_detach 844 * Description: Called when the controller is being detached from 845 * the pci bus. 846 * 847 * Input: dev -- bus device corresponding to the ctlr 848 * Output: None 849 * Return value: 0 -- success 850 * non-zero-- failure 851 */ 852static TW_INT32 853twa_detach(device_t dev) 854{ 855 struct twa_softc *sc = device_get_softc(dev); 856 TW_INT32 error; 857 858 tw_osli_dbg_dprintf(3, sc, "entered"); 859 860 error = EBUSY; 861 if (sc->open) { 862 tw_osli_printf(sc, "error = %d", 863 TW_CL_SEVERITY_ERROR_STRING, 864 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 865 0x2014, 866 "Device open", 867 error); 868 goto out; 869 } 870 871 /* Shut the controller down. */ 872 if ((error = twa_shutdown(dev))) 873 goto out; 874 875 /* Free all resources associated with this controller. */ 876 tw_osli_free_resources(sc); 877 error = 0; 878 879out: 880 return(error); 881} 882 883 884 885/* 886 * Function name: twa_shutdown 887 * Description: Called at unload/shutdown time. Lets the controller 888 * know that we are going down. 889 * 890 * Input: dev -- bus device corresponding to the ctlr 891 * Output: None 892 * Return value: 0 -- success 893 * non-zero-- failure 894 */ 895static TW_INT32 896twa_shutdown(device_t dev) 897{ 898 struct twa_softc *sc = device_get_softc(dev); 899 TW_INT32 error = 0; 900 901 tw_osli_dbg_dprintf(3, sc, "entered"); 902
|
903 /* Disconnect interrupts. */ 904 error = twa_teardown_intr(sc); 905 |
906 /* Disconnect from the controller. */ 907 if ((error = tw_cl_shutdown_ctlr(&(sc->ctlr_handle), 0))) { 908 tw_osli_printf(sc, "error = %d", 909 TW_CL_SEVERITY_ERROR_STRING, 910 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 911 0x2015, 912 "Failed to shutdown Common Layer/controller", 913 error); 914 } 915 return(error); 916} 917 918 919 920/* 921 * Function name: twa_busdma_lock 922 * Description: Function to provide synchronization during busdma_swi. 923 * 924 * Input: lock_arg -- lock mutex sent as argument 925 * op -- operation (lock/unlock) expected of the function 926 * Output: None 927 * Return value: None 928 */ 929TW_VOID 930twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op) 931{ 932 struct mtx *lock; 933 934 lock = (struct mtx *)lock_arg; 935 switch (op) { 936 case BUS_DMA_LOCK: 937 mtx_lock_spin(lock); 938 break; 939 940 case BUS_DMA_UNLOCK: 941 mtx_unlock_spin(lock); 942 break; 943 944 default: 945 panic("Unknown operation 0x%x for twa_busdma_lock!", op); 946 } 947} 948 949 950/* 951 * Function name: twa_pci_intr 952 * Description: Interrupt handler. Wrapper for twa_interrupt. 953 * 954 * Input: arg -- ptr to OSL internal ctlr context 955 * Output: None 956 * Return value: None 957 */ 958static TW_VOID 959twa_pci_intr(TW_VOID *arg) 960{ 961 struct twa_softc *sc = (struct twa_softc *)arg; 962 963 tw_osli_dbg_dprintf(10, sc, "entered"); 964 tw_cl_interrupt(&(sc->ctlr_handle)); 965} 966 967 968/* 969 * Function name: tw_osli_fw_passthru 970 * Description: Builds a fw passthru cmd pkt, and submits it to CL. 971 * 972 * Input: sc -- ptr to OSL internal ctlr context 973 * buf -- ptr to ioctl pkt understood by CL 974 * Output: None 975 * Return value: 0 -- success 976 * non-zero-- failure 977 */ 978TW_INT32 979tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf) 980{ 981 struct tw_osli_req_context *req; 982 struct tw_osli_ioctl_no_data_buf *user_buf = 983 (struct tw_osli_ioctl_no_data_buf *)buf; 984 TW_TIME end_time; 985 TW_UINT32 timeout = 60; 986 TW_UINT32 data_buf_size_adjusted; 987 struct tw_cl_req_packet *req_pkt; 988 struct tw_cl_passthru_req_packet *pt_req; 989 TW_INT32 error; 990 991 tw_osli_dbg_dprintf(5, sc, "ioctl: passthru"); 992 993 if ((req = tw_osli_get_request(sc)) == NULL) 994 return(EBUSY); 995 996 req->req_handle.osl_req_ctxt = req; 997 req->orig_req = buf; 998 req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU; 999 1000 req_pkt = &(req->req_pkt); 1001 req_pkt->status = 0; 1002 req_pkt->tw_osl_callback = tw_osl_complete_passthru; 1003 /* Let the Common Layer retry the request on cmd queue full. */ 1004 req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY; 1005 1006 pt_req = &(req_pkt->gen_req_pkt.pt_req); 1007 /* 1008 * Make sure that the data buffer sent to firmware is a 1009 * 512 byte multiple in size. 1010 */ 1011 data_buf_size_adjusted = 1012 (user_buf->driver_pkt.buffer_length + 1013 (sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1); 1014 if ((req->length = data_buf_size_adjusted)) { 1015 if ((req->data = malloc(data_buf_size_adjusted, 1016 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 1017 error = ENOMEM; 1018 tw_osli_printf(sc, "error = %d", 1019 TW_CL_SEVERITY_ERROR_STRING, 1020 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1021 0x2016, 1022 "Could not alloc mem for " 1023 "fw_passthru data_buf", 1024 error); 1025 goto fw_passthru_err; 1026 } 1027 /* Copy the payload. */ 1028 if ((error = copyin((TW_VOID *)(user_buf->pdata), 1029 req->data, 1030 user_buf->driver_pkt.buffer_length)) != 0) { 1031 tw_osli_printf(sc, "error = %d", 1032 TW_CL_SEVERITY_ERROR_STRING, 1033 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1034 0x2017, 1035 "Could not copyin fw_passthru data_buf", 1036 error); 1037 goto fw_passthru_err; 1038 } 1039 pt_req->sgl_entries = 1; /* will be updated during mapping */ 1040 req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN | 1041 TW_OSLI_REQ_FLAGS_DATA_OUT); 1042 } else 1043 pt_req->sgl_entries = 0; /* no payload */ 1044 1045 pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt)); 1046 pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet); 1047 1048 if ((error = tw_osli_map_request(req))) 1049 goto fw_passthru_err; 1050 1051 end_time = tw_osl_get_local_time() + timeout; 1052 while (req->state != TW_OSLI_REQ_STATE_COMPLETE) { 1053 mtx_lock(req->ioctl_wake_timeout_lock); 1054 req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING; 1055 1056 error = mtx_sleep(req, req->ioctl_wake_timeout_lock, 0, 1057 "twa_passthru", timeout*hz); 1058 mtx_unlock(req->ioctl_wake_timeout_lock); 1059 1060 if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING)) 1061 error = 0; 1062 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1063 1064 if (! error) { 1065 if (((error = req->error_code)) || 1066 ((error = (req->state != 1067 TW_OSLI_REQ_STATE_COMPLETE))) || 1068 ((error = req_pkt->status))) 1069 goto fw_passthru_err; 1070 break; 1071 } 1072 1073 if (req_pkt->status) { 1074 error = req_pkt->status; 1075 goto fw_passthru_err; 1076 } 1077 1078 if (error == EWOULDBLOCK) { 1079 /* Time out! */ 1080 if ((!(req->error_code)) && 1081 (req->state == TW_OSLI_REQ_STATE_COMPLETE) && 1082 (!(req_pkt->status)) ) { 1083#ifdef TW_OSL_DEBUG 1084 tw_osli_printf(sc, "request = %p", 1085 TW_CL_SEVERITY_ERROR_STRING, 1086 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1087 0x7777, 1088 "FALSE Passthru timeout!", 1089 req); 1090#endif /* TW_OSL_DEBUG */ 1091 error = 0; /* False error */ 1092 break; 1093 }
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1000 tw_osli_printf(sc, "request = %p",
1001 TW_CL_SEVERITY_ERROR_STRING,
1002 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1003 0x2018,
1004 "Passthru request timed out!",
1005 req);
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1094 if (!(tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 1095#ifdef TW_OSL_DEBUG 1096 tw_osli_printf(sc, "request = %p", 1097 TW_CL_SEVERITY_ERROR_STRING, 1098 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1099 0x2018, 1100 "Passthru request timed out!", 1101 req); 1102#else /* TW_OSL_DEBUG */ 1103 device_printf((sc)->bus_dev, "Passthru request timed out!\n"); 1104#endif /* TW_OSL_DEBUG */ 1105 tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle)); 1106 } 1107 1108 error = 0; 1109 end_time = tw_osl_get_local_time() + timeout; 1110 continue; |
1111 /*
|
1007 * Should I check here if the timeout happened
1008 * because of yet another reset, and not do a
1009 * second reset?
1010 */
1011 tw_cl_reset_ctlr(&sc->ctlr_handle);
1012 /*
|
1112 * Don't touch req after a reset. It (and any
|
1014 * associated data) will already have been
|
1113 * associated data) will be |
1114 * unmapped by the callback. 1115 */
|
1017 user_buf->driver_pkt.os_status = error;
1018 error = ETIMEDOUT;
1019 goto fw_passthru_err;
|
1116 } 1117 /* 1118 * Either the request got completed, or we were woken up by a 1119 * signal. Calculate the new timeout, in case it was the latter. 1120 */ 1121 timeout = (end_time - tw_osl_get_local_time());
|
1026 }
|
1122 } /* End of while loop */ |
1123 1124 /* If there was a payload, copy it back. */ 1125 if ((!error) && (req->length)) 1126 if ((error = copyout(req->data, user_buf->pdata, 1127 user_buf->driver_pkt.buffer_length))) 1128 tw_osli_printf(sc, "error = %d", 1129 TW_CL_SEVERITY_ERROR_STRING, 1130 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1131 0x2019, 1132 "Could not copyout fw_passthru data_buf", 1133 error); 1134 1135fw_passthru_err:
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1040 /*
1041 * Print the failure message. For some reason, on certain OS versions,
1042 * printing this error message during reset hangs the display (although
1043 * the rest of the system is running fine. So, don't print it if the
1044 * failure was due to a reset.
1045 */
1046 if ((error) && (error != TW_CL_ERR_REQ_BUS_RESET))
1047 tw_osli_printf(sc, "error = %d",
1048 TW_CL_SEVERITY_ERROR_STRING,
1049 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1050 0x201A,
1051 "Firmware passthru failed!",
1052 error);
|
1136
|
1137 if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) 1138 error = EBUSY; 1139 |
1140 user_buf->driver_pkt.os_status = error; 1141 /* Free resources. */ 1142 if (req->data) 1143 free(req->data, TW_OSLI_MALLOC_CLASS); 1144 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1145 return(error); 1146} 1147 1148 1149 1150/* 1151 * Function name: tw_osl_complete_passthru 1152 * Description: Called to complete passthru requests. 1153 * 1154 * Input: req_handle -- ptr to request handle 1155 * Output: None 1156 * Return value: None 1157 */ 1158TW_VOID 1159tw_osl_complete_passthru(struct tw_cl_req_handle *req_handle) 1160{ 1161 struct tw_osli_req_context *req = req_handle->osl_req_ctxt;
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1162 struct tw_cl_req_packet *req_pkt = 1163 (struct tw_cl_req_packet *)(&req->req_pkt); |
1164 struct twa_softc *sc = req->ctlr; 1165 1166 tw_osli_dbg_dprintf(5, sc, "entered"); 1167 1168 if (req->state != TW_OSLI_REQ_STATE_BUSY) { 1169 tw_osli_printf(sc, "request = %p, status = %d", 1170 TW_CL_SEVERITY_ERROR_STRING, 1171 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1172 0x201B, 1173 "Unposted command completed!!", 1174 req, req->state); 1175 } 1176 1177 /* 1178 * Remove request from the busy queue. Just mark it complete. 1179 * There's no need to move it into the complete queue as we are 1180 * going to be done with it right now. 1181 */ 1182 req->state = TW_OSLI_REQ_STATE_COMPLETE; 1183 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 1184 1185 tw_osli_unmap_request(req); 1186 1187 /* 1188 * Don't do a wake up if there was an error even before the request 1189 * was sent down to the Common Layer, and we hadn't gotten an 1190 * EINPROGRESS. The request originator will then be returned an 1191 * error, and he can do the clean-up. 1192 */ 1193 if ((req->error_code) && (!(req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS))) 1194 return; 1195 1196 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1197 if (req->flags & TW_OSLI_REQ_FLAGS_SLEEPING) { 1198 /* Wake up the sleeping command originator. */ 1199 tw_osli_dbg_dprintf(5, sc, 1200 "Waking up originator of request %p", req); 1201 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1202 wakeup_one(req); 1203 } else { 1204 /* 1205 * If the request completed even before mtx_sleep 1206 * was called, simply return. 1207 */ 1208 if (req->flags & TW_OSLI_REQ_FLAGS_MAPPED) 1209 return; 1210
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1211 if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) 1212 return; 1213 |
1214 tw_osli_printf(sc, "request = %p", 1215 TW_CL_SEVERITY_ERROR_STRING, 1216 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1217 0x201C, 1218 "Passthru callback called, " 1219 "and caller not sleeping", 1220 req); 1221 } 1222 } else { 1223 tw_osli_printf(sc, "request = %p", 1224 TW_CL_SEVERITY_ERROR_STRING, 1225 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1226 0x201D, 1227 "Passthru callback called for non-passthru request", 1228 req); 1229 } 1230} 1231 1232 1233 1234/* 1235 * Function name: tw_osli_get_request 1236 * Description: Gets a request pkt from the free queue. 1237 * 1238 * Input: sc -- ptr to OSL internal ctlr context 1239 * Output: None 1240 * Return value: ptr to request pkt -- success 1241 * NULL -- failure 1242 */ 1243struct tw_osli_req_context * 1244tw_osli_get_request(struct twa_softc *sc) 1245{ 1246 struct tw_osli_req_context *req; 1247 1248 tw_osli_dbg_dprintf(4, sc, "entered"); 1249 1250 /* Get a free request packet. */ 1251 req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q); 1252 1253 /* Initialize some fields to their defaults. */ 1254 if (req) { 1255 req->req_handle.osl_req_ctxt = NULL; 1256 req->req_handle.cl_req_ctxt = NULL; 1257 req->req_handle.is_io = 0; 1258 req->data = NULL; 1259 req->length = 0;
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1260 req->deadline = 0; |
1261 req->real_data = NULL; 1262 req->real_length = 0; 1263 req->state = TW_OSLI_REQ_STATE_INIT;/* req being initialized */ 1264 req->flags = 0; 1265 req->error_code = 0; 1266 req->orig_req = NULL; 1267 1268 bzero(&(req->req_pkt), sizeof(struct tw_cl_req_packet)); 1269 1270 } 1271 return(req); 1272} 1273 1274 1275 1276/* 1277 * Function name: twa_map_load_data_callback 1278 * Description: Callback of bus_dmamap_load for the buffer associated 1279 * with data. Updates the cmd pkt (size/sgl_entries 1280 * fields, as applicable) to reflect the number of sg 1281 * elements. 1282 * 1283 * Input: arg -- ptr to OSL internal request context 1284 * segs -- ptr to a list of segment descriptors 1285 * nsegments--# of segments 1286 * error -- 0 if no errors encountered before callback, 1287 * non-zero if errors were encountered 1288 * Output: None 1289 * Return value: None 1290 */ 1291static TW_VOID 1292twa_map_load_data_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1293 TW_INT32 nsegments, TW_INT32 error) 1294{ 1295 struct tw_osli_req_context *req = 1296 (struct tw_osli_req_context *)arg; 1297 struct twa_softc *sc = req->ctlr; 1298 struct tw_cl_req_packet *req_pkt = &(req->req_pkt); 1299 1300 tw_osli_dbg_dprintf(10, sc, "entered"); 1301
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1302 if (error == EINVAL) { 1303 req->error_code = error; 1304 return; 1305 } 1306 |
1307 /* Mark the request as currently being processed. */ 1308 req->state = TW_OSLI_REQ_STATE_BUSY; 1309 /* Move the request into the busy queue. */ 1310 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1311 1312 req->flags |= TW_OSLI_REQ_FLAGS_MAPPED; 1313 1314 if (error == EFBIG) { 1315 req->error_code = error; 1316 goto out; 1317 } 1318 1319 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1320 struct tw_cl_passthru_req_packet *pt_req; 1321 1322 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1323 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1324 BUS_DMASYNC_PREREAD); 1325 1326 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1327 /* 1328 * If we're using an alignment buffer, and we're 1329 * writing data, copy the real data out. 1330 */ 1331 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1332 bcopy(req->real_data, req->data, req->real_length); 1333 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1334 BUS_DMASYNC_PREWRITE); 1335 } 1336 1337 pt_req = &(req_pkt->gen_req_pkt.pt_req); 1338 pt_req->sg_list = (TW_UINT8 *)segs; 1339 pt_req->sgl_entries += (nsegments - 1); 1340 error = tw_cl_fw_passthru(&(sc->ctlr_handle), req_pkt, 1341 &(req->req_handle)); 1342 } else { 1343 struct tw_cl_scsi_req_packet *scsi_req; 1344 1345 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1346 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1347 BUS_DMASYNC_PREREAD); 1348 1349 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1350 /* 1351 * If we're using an alignment buffer, and we're 1352 * writing data, copy the real data out. 1353 */ 1354 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1355 bcopy(req->real_data, req->data, req->real_length); 1356 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1357 BUS_DMASYNC_PREWRITE); 1358 } 1359 1360 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 1361 scsi_req->sg_list = (TW_UINT8 *)segs; 1362 scsi_req->sgl_entries += (nsegments - 1); 1363 error = tw_cl_start_io(&(sc->ctlr_handle), req_pkt, 1364 &(req->req_handle)); 1365 } 1366 1367out: 1368 if (error) { 1369 req->error_code = error; 1370 req_pkt->tw_osl_callback(&(req->req_handle)); 1371 /* 1372 * If the caller had been returned EINPROGRESS, and he has 1373 * registered a callback for handling completion, the callback 1374 * will never get called because we were unable to submit the 1375 * request. So, free up the request right here. 1376 */ 1377 if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS) 1378 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1379 } 1380} 1381 1382 1383 1384/* 1385 * Function name: twa_map_load_callback 1386 * Description: Callback of bus_dmamap_load for the buffer associated 1387 * with a cmd pkt. 1388 * 1389 * Input: arg -- ptr to variable to hold phys addr 1390 * segs -- ptr to a list of segment descriptors 1391 * nsegments--# of segments 1392 * error -- 0 if no errors encountered before callback, 1393 * non-zero if errors were encountered 1394 * Output: None 1395 * Return value: None 1396 */ 1397static TW_VOID 1398twa_map_load_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1399 TW_INT32 nsegments, TW_INT32 error) 1400{ 1401 *((bus_addr_t *)arg) = segs[0].ds_addr; 1402} 1403 1404 1405 1406/* 1407 * Function name: tw_osli_map_request 1408 * Description: Maps a cmd pkt and data associated with it, into 1409 * DMA'able memory. 1410 * 1411 * Input: req -- ptr to request pkt 1412 * Output: None 1413 * Return value: 0 -- success 1414 * non-zero-- failure 1415 */ 1416TW_INT32 1417tw_osli_map_request(struct tw_osli_req_context *req) 1418{ 1419 struct twa_softc *sc = req->ctlr; 1420 TW_INT32 error = 0; 1421 1422 tw_osli_dbg_dprintf(10, sc, "entered"); 1423 1424 /* If the command involves data, map that too. */ 1425 if (req->data != NULL) { 1426 /* 1427 * It's sufficient for the data pointer to be 4-byte aligned 1428 * to work with 9000. However, if 4-byte aligned addresses 1429 * are passed to bus_dmamap_load, we can get back sg elements 1430 * that are not 512-byte multiples in size. So, we will let 1431 * only those buffers that are 512-byte aligned to pass 1432 * through, and bounce the rest, so as to make sure that we 1433 * always get back sg elements that are 512-byte multiples 1434 * in size. 1435 */ 1436 if (((vm_offset_t)req->data % sc->sg_size_factor) || 1437 (req->length % sc->sg_size_factor)) { 1438 req->flags |= TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED; 1439 /* Save original data pointer and length. */ 1440 req->real_data = req->data; 1441 req->real_length = req->length; 1442 req->length = (req->length + 1443 (sc->sg_size_factor - 1)) & 1444 ~(sc->sg_size_factor - 1); 1445 req->data = malloc(req->length, TW_OSLI_MALLOC_CLASS, 1446 M_NOWAIT); 1447 if (req->data == NULL) { 1448 tw_osli_printf(sc, "error = %d", 1449 TW_CL_SEVERITY_ERROR_STRING, 1450 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1451 0x201E, 1452 "Failed to allocate memory " 1453 "for bounce buffer", 1454 ENOMEM); 1455 /* Restore original data pointer and length. */ 1456 req->data = req->real_data; 1457 req->length = req->real_length; 1458 return(ENOMEM); 1459 } 1460 } 1461 1462 /* 1463 * Map the data buffer into bus space and build the SG list. 1464 */ 1465 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1466 /* Lock against multiple simultaneous ioctl calls. */ 1467 mtx_lock_spin(sc->io_lock); 1468 error = bus_dmamap_load(sc->ioctl_tag, sc->ioctl_map, 1469 req->data, req->length, 1470 twa_map_load_data_callback, req, 1471 BUS_DMA_WAITOK); 1472 mtx_unlock_spin(sc->io_lock); 1473 } else { 1474 /* 1475 * There's only one CAM I/O thread running at a time. 1476 * So, there's no need to hold the io_lock. 1477 */ 1478 error = bus_dmamap_load(sc->dma_tag, req->dma_map, 1479 req->data, req->length, 1480 twa_map_load_data_callback, req, 1481 BUS_DMA_WAITOK); 1482 } 1483 1484 if (!error) 1485 error = req->error_code; 1486 else { 1487 if (error == EINPROGRESS) { 1488 /* 1489 * Specifying sc->io_lock as the lockfuncarg 1490 * in ...tag_create should protect the access 1491 * of ...FLAGS_MAPPED from the callback. 1492 */ 1493 mtx_lock_spin(sc->io_lock); 1494 if (!(req->flags & TW_OSLI_REQ_FLAGS_MAPPED)) 1495 req->flags |= TW_OSLI_REQ_FLAGS_IN_PROGRESS; 1496 tw_osli_disallow_new_requests(sc, &(req->req_handle)); 1497 mtx_unlock_spin(sc->io_lock); 1498 error = 0; 1499 } else {
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1500 tw_osli_printf(sc, "error = %d", 1501 TW_CL_SEVERITY_ERROR_STRING, 1502 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1503 0x9999, 1504 "Failed to map DMA memory " 1505 "for I/O request", 1506 error); 1507 req->flags |= TW_OSLI_REQ_FLAGS_FAILED; |
1508 /* Free alignment buffer if it was used. */ 1509 if (req->flags & 1510 TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1511 free(req->data, TW_OSLI_MALLOC_CLASS); 1512 /* 1513 * Restore original data pointer 1514 * and length. 1515 */ 1516 req->data = req->real_data; 1517 req->length = req->real_length; 1518 } 1519 } 1520 } 1521 1522 } else { 1523 /* Mark the request as currently being processed. */ 1524 req->state = TW_OSLI_REQ_STATE_BUSY; 1525 /* Move the request into the busy queue. */ 1526 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1527 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) 1528 error = tw_cl_fw_passthru(&sc->ctlr_handle, 1529 &(req->req_pkt), &(req->req_handle)); 1530 else 1531 error = tw_cl_start_io(&sc->ctlr_handle, 1532 &(req->req_pkt), &(req->req_handle)); 1533 if (error) { 1534 req->error_code = error; 1535 req->req_pkt.tw_osl_callback(&(req->req_handle)); 1536 } 1537 } 1538 return(error); 1539} 1540 1541 1542 1543/* 1544 * Function name: tw_osli_unmap_request 1545 * Description: Undoes the mapping done by tw_osli_map_request. 1546 * 1547 * Input: req -- ptr to request pkt 1548 * Output: None 1549 * Return value: None 1550 */ 1551TW_VOID 1552tw_osli_unmap_request(struct tw_osli_req_context *req) 1553{ 1554 struct twa_softc *sc = req->ctlr; 1555 1556 tw_osli_dbg_dprintf(10, sc, "entered"); 1557 1558 /* If the command involved data, unmap that too. */ 1559 if (req->data != NULL) { 1560 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1561 /* Lock against multiple simultaneous ioctl calls. */ 1562 mtx_lock_spin(sc->io_lock); 1563 1564 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1565 bus_dmamap_sync(sc->ioctl_tag, 1566 sc->ioctl_map, BUS_DMASYNC_POSTREAD); 1567 1568 /* 1569 * If we are using a bounce buffer, and we are 1570 * reading data, copy the real data in. 1571 */ 1572 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1573 bcopy(req->data, req->real_data, 1574 req->real_length); 1575 } 1576 1577 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1578 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1579 BUS_DMASYNC_POSTWRITE); 1580 1581 bus_dmamap_unload(sc->ioctl_tag, sc->ioctl_map); 1582 1583 mtx_unlock_spin(sc->io_lock); 1584 } else { 1585 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1586 bus_dmamap_sync(sc->dma_tag, 1587 req->dma_map, BUS_DMASYNC_POSTREAD); 1588 1589 /* 1590 * If we are using a bounce buffer, and we are 1591 * reading data, copy the real data in. 1592 */ 1593 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1594 bcopy(req->data, req->real_data, 1595 req->real_length); 1596 } 1597 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1598 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1599 BUS_DMASYNC_POSTWRITE); 1600 1601 bus_dmamap_unload(sc->dma_tag, req->dma_map); 1602 } 1603 } 1604 1605 /* Free alignment buffer if it was used. */ 1606 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1607 free(req->data, TW_OSLI_MALLOC_CLASS); 1608 /* Restore original data pointer and length. */ 1609 req->data = req->real_data; 1610 req->length = req->real_length; 1611 } 1612} 1613 1614 1615 1616#ifdef TW_OSL_DEBUG 1617 1618TW_VOID twa_report_stats(TW_VOID); 1619TW_VOID twa_reset_stats(TW_VOID); 1620TW_VOID tw_osli_print_ctlr_stats(struct twa_softc *sc); 1621TW_VOID twa_print_req_info(struct tw_osli_req_context *req); 1622 1623 1624/* 1625 * Function name: twa_report_stats 1626 * Description: For being called from ddb. Calls functions that print 1627 * OSL and CL internal stats for the controller. 1628 * 1629 * Input: None 1630 * Output: None 1631 * Return value: None 1632 */ 1633TW_VOID 1634twa_report_stats(TW_VOID) 1635{ 1636 struct twa_softc *sc; 1637 TW_INT32 i; 1638 1639 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1640 tw_osli_print_ctlr_stats(sc); 1641 tw_cl_print_ctlr_stats(&sc->ctlr_handle); 1642 } 1643} 1644 1645 1646 1647/* 1648 * Function name: tw_osli_print_ctlr_stats 1649 * Description: For being called from ddb. Prints OSL controller stats 1650 * 1651 * Input: sc -- ptr to OSL internal controller context 1652 * Output: None 1653 * Return value: None 1654 */ 1655TW_VOID 1656tw_osli_print_ctlr_stats(struct twa_softc *sc) 1657{ 1658 twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc); 1659 twa_printf(sc, "OSLq type current max\n"); 1660 twa_printf(sc, "free %04d %04d\n", 1661 sc->q_stats[TW_OSLI_FREE_Q].cur_len, 1662 sc->q_stats[TW_OSLI_FREE_Q].max_len); 1663 twa_printf(sc, "busy %04d %04d\n", 1664 sc->q_stats[TW_OSLI_BUSY_Q].cur_len, 1665 sc->q_stats[TW_OSLI_BUSY_Q].max_len); 1666} 1667 1668 1669 1670/* 1671 * Function name: twa_print_req_info 1672 * Description: For being called from ddb. Calls functions that print 1673 * OSL and CL internal details for the request. 1674 * 1675 * Input: req -- ptr to OSL internal request context 1676 * Output: None 1677 * Return value: None 1678 */ 1679TW_VOID 1680twa_print_req_info(struct tw_osli_req_context *req) 1681{ 1682 struct twa_softc *sc = req->ctlr; 1683 1684 twa_printf(sc, "OSL details for request:\n"); 1685 twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n" 1686 "data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n" 1687 "state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n" 1688 "next_req = %p, prev_req = %p, dma_map = %p\n", 1689 req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt, 1690 req->data, req->length, req->real_data, req->real_length, 1691 req->state, req->flags, req->error_code, req->orig_req, 1692 req->link.next, req->link.prev, req->dma_map); 1693 tw_cl_print_req_info(&(req->req_handle)); 1694} 1695 1696 1697 1698/* 1699 * Function name: twa_reset_stats 1700 * Description: For being called from ddb. 1701 * Resets some OSL controller stats. 1702 * 1703 * Input: None 1704 * Output: None 1705 * Return value: None 1706 */ 1707TW_VOID 1708twa_reset_stats(TW_VOID) 1709{ 1710 struct twa_softc *sc; 1711 TW_INT32 i; 1712 1713 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1714 sc->q_stats[TW_OSLI_FREE_Q].max_len = 0; 1715 sc->q_stats[TW_OSLI_BUSY_Q].max_len = 0; 1716 tw_cl_reset_stats(&sc->ctlr_handle); 1717 } 1718} 1719 1720#endif /* TW_OSL_DEBUG */
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