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sys/dev/twa/tw_osl_freebsd.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004-07 Applied Micro Circuits Corporation. 5 * Copyright (c) 2004-05 Vinod Kashyap. 6 * Copyright (c) 2000 Michael Smith 7 * Copyright (c) 2000 BSDi 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 /* 36 * AMCC'S 3ware driver for 9000 series storage controllers. 37 * 38 * Author: Vinod Kashyap 39 * Modifications by: Adam Radford 40 * Modifications by: Manjunath Ranganathaiah 41 */ 42 43 /* 44 * FreeBSD specific functions not related to CAM, and other 45 * miscellaneous functions. 46 */ 47 48 #include <dev/twa/tw_osl_includes.h> 49 #include <dev/twa/tw_cl_fwif.h> 50 #include <dev/twa/tw_cl_ioctl.h> 51 #include <dev/twa/tw_osl_ioctl.h> 52 53 #ifdef TW_OSL_DEBUG 54 TW_INT32 TW_DEBUG_LEVEL_FOR_OSL = TW_OSL_DEBUG; 55 TW_INT32 TW_OSL_DEBUG_LEVEL_FOR_CL = TW_OSL_DEBUG; 56 #endif /* TW_OSL_DEBUG */ 57 58 static MALLOC_DEFINE(TW_OSLI_MALLOC_CLASS, "twa_commands", "twa commands"); 59 60 static d_open_t twa_open; 61 static d_close_t twa_close; 62 static d_ioctl_t twa_ioctl; 63 64 static 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 72 static devclass_t twa_devclass; 73 74 /* 75 * Function name: twa_open 76 * Description: Called when the controller is opened. 77 * Simply marks the controller as open. 78 * 79 * Input: dev -- control device corresponding to the ctlr 80 * flags -- mode of open 81 * fmt -- device type (character/block etc.) 82 * proc -- current process 83 * Output: None 84 * Return value: 0 -- success 85 * non-zero-- failure 86 */ 87 static TW_INT32 88 twa_open(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc) 89 { 90 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 91 92 tw_osli_dbg_dprintf(5, sc, "entered"); 93 sc->open = TW_CL_TRUE; 94 return(0); 95 } 96 97 /* 98 * Function name: twa_close 99 * Description: Called when the controller is closed. 100 * Simply marks the controller as not open. 101 * 102 * Input: dev -- control device corresponding to the ctlr 103 * flags -- mode of corresponding open 104 * fmt -- device type (character/block etc.) 105 * proc -- current process 106 * Output: None 107 * Return value: 0 -- success 108 * non-zero-- failure 109 */ 110 static TW_INT32 111 twa_close(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc) 112 { 113 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 114 115 tw_osli_dbg_dprintf(5, sc, "entered"); 116 sc->open = TW_CL_FALSE; 117 return(0); 118 } 119 120 /* 121 * Function name: twa_ioctl 122 * Description: Called when an ioctl is posted to the controller. 123 * Handles any OS Layer specific cmds, passes the rest 124 * on to the Common Layer. 125 * 126 * Input: dev -- control device corresponding to the ctlr 127 * cmd -- ioctl cmd 128 * buf -- ptr to buffer in kernel memory, which is 129 * a copy of the input buffer in user-space 130 * flags -- mode of corresponding open 131 * proc -- current process 132 * Output: buf -- ptr to buffer in kernel memory, which will 133 * be copied to the output buffer in user-space 134 * Return value: 0 -- success 135 * non-zero-- failure 136 */ 137 static TW_INT32 138 twa_ioctl(struct cdev *dev, u_long cmd, caddr_t buf, TW_INT32 flags, struct thread *proc) 139 { 140 struct twa_softc *sc = (struct twa_softc *)(dev->si_drv1); 141 TW_INT32 error; 142 143 tw_osli_dbg_dprintf(5, sc, "entered"); 144 145 switch (cmd) { 146 case TW_OSL_IOCTL_FIRMWARE_PASS_THROUGH: 147 tw_osli_dbg_dprintf(6, sc, "ioctl: fw_passthru"); 148 error = tw_osli_fw_passthru(sc, (TW_INT8 *)buf); 149 break; 150 151 case TW_OSL_IOCTL_SCAN_BUS: 152 /* Request CAM for a bus scan. */ 153 tw_osli_dbg_dprintf(6, sc, "ioctl: scan bus"); 154 error = tw_osli_request_bus_scan(sc); 155 break; 156 157 default: 158 tw_osli_dbg_dprintf(6, sc, "ioctl: 0x%lx", cmd); 159 error = tw_cl_ioctl(&sc->ctlr_handle, cmd, buf); 160 break; 161 } 162 return(error); 163 } 164 165 static TW_INT32 twa_probe(device_t dev); 166 static TW_INT32 twa_attach(device_t dev); 167 static TW_INT32 twa_detach(device_t dev); 168 static TW_INT32 twa_shutdown(device_t dev); 169 static TW_VOID twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op); 170 static TW_VOID twa_pci_intr(TW_VOID *arg); 171 static TW_VOID twa_watchdog(TW_VOID *arg); 172 int twa_setup_intr(struct twa_softc *sc); 173 int twa_teardown_intr(struct twa_softc *sc); 174 175 static TW_INT32 tw_osli_alloc_mem(struct twa_softc *sc); 176 static TW_VOID tw_osli_free_resources(struct twa_softc *sc); 177 178 static TW_VOID twa_map_load_data_callback(TW_VOID *arg, 179 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 180 static TW_VOID twa_map_load_callback(TW_VOID *arg, 181 bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error); 182 183 static device_method_t twa_methods[] = { 184 /* Device interface */ 185 DEVMETHOD(device_probe, twa_probe), 186 DEVMETHOD(device_attach, twa_attach), 187 DEVMETHOD(device_detach, twa_detach), 188 DEVMETHOD(device_shutdown, twa_shutdown), 189 190 DEVMETHOD_END 191 }; 192 193 static driver_t twa_pci_driver = { 194 "twa", 195 twa_methods, 196 sizeof(struct twa_softc) 197 }; 198 199 DRIVER_MODULE(twa, pci, twa_pci_driver, twa_devclass, 0, 0); 200 MODULE_DEPEND(twa, cam, 1, 1, 1); 201 MODULE_DEPEND(twa, pci, 1, 1, 1); 202 203 /* 204 * Function name: twa_probe 205 * Description: Called at driver load time. Claims 9000 ctlrs. 206 * 207 * Input: dev -- bus device corresponding to the ctlr 208 * Output: None 209 * Return value: <= 0 -- success 210 * > 0 -- failure 211 */ 212 static TW_INT32 213 twa_probe(device_t dev) 214 { 215 static TW_UINT8 first_ctlr = 1; 216 217 tw_osli_dbg_printf(3, "entered"); 218 219 if (tw_cl_ctlr_supported(pci_get_vendor(dev), pci_get_device(dev))) { 220 device_set_desc(dev, TW_OSLI_DEVICE_NAME); 221 /* Print the driver version only once. */ 222 if (first_ctlr) { 223 printf("3ware device driver for 9000 series storage " 224 "controllers, version: %s\n", 225 TW_OSL_DRIVER_VERSION_STRING); 226 first_ctlr = 0; 227 } 228 return(0); 229 } 230 return(ENXIO); 231 } 232 233 int twa_setup_intr(struct twa_softc *sc) 234 { 235 int error = 0; 236 237 if (!(sc->intr_handle) && (sc->irq_res)) { 238 error = bus_setup_intr(sc->bus_dev, sc->irq_res, 239 INTR_TYPE_CAM | INTR_MPSAFE, 240 NULL, twa_pci_intr, 241 sc, &sc->intr_handle); 242 } 243 return( error ); 244 } 245 246 int twa_teardown_intr(struct twa_softc *sc) 247 { 248 int error = 0; 249 250 if ((sc->intr_handle) && (sc->irq_res)) { 251 error = bus_teardown_intr(sc->bus_dev, 252 sc->irq_res, sc->intr_handle); 253 sc->intr_handle = NULL; 254 } 255 return( error ); 256 } 257 258 /* 259 * Function name: twa_attach 260 * Description: Allocates pci resources; updates sc; adds a node to the 261 * sysctl tree to expose the driver version; makes calls 262 * (to the Common Layer) to initialize ctlr, and to 263 * attach to CAM. 264 * 265 * Input: dev -- bus device corresponding to the ctlr 266 * Output: None 267 * Return value: 0 -- success 268 * non-zero-- failure 269 */ 270 static TW_INT32 271 twa_attach(device_t dev) 272 { 273 struct twa_softc *sc = device_get_softc(dev); 274 TW_INT32 bar_num; 275 TW_INT32 bar0_offset; 276 TW_INT32 bar_size; 277 TW_INT32 error; 278 279 tw_osli_dbg_dprintf(3, sc, "entered"); 280 281 sc->ctlr_handle.osl_ctlr_ctxt = sc; 282 283 /* Initialize the softc structure. */ 284 sc->bus_dev = dev; 285 sc->device_id = pci_get_device(dev); 286 287 /* Initialize the mutexes right here. */ 288 sc->io_lock = &(sc->io_lock_handle); 289 mtx_init(sc->io_lock, "tw_osl_io_lock", NULL, MTX_SPIN); 290 sc->q_lock = &(sc->q_lock_handle); 291 mtx_init(sc->q_lock, "tw_osl_q_lock", NULL, MTX_SPIN); 292 sc->sim_lock = &(sc->sim_lock_handle); 293 mtx_init(sc->sim_lock, "tw_osl_sim_lock", NULL, MTX_DEF | MTX_RECURSE); 294 295 sysctl_ctx_init(&sc->sysctl_ctxt); 296 sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctxt, 297 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, device_get_nameunit(dev), 298 CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); 299 if (sc->sysctl_tree == NULL) { 300 tw_osli_printf(sc, "error = %d", 301 TW_CL_SEVERITY_ERROR_STRING, 302 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 303 0x2000, 304 "Cannot add sysctl tree node", 305 ENXIO); 306 return(ENXIO); 307 } 308 SYSCTL_ADD_STRING(&sc->sysctl_ctxt, SYSCTL_CHILDREN(sc->sysctl_tree), 309 OID_AUTO, "driver_version", CTLFLAG_RD, 310 TW_OSL_DRIVER_VERSION_STRING, 0, "TWA driver version"); 311 312 /* Force the busmaster enable bit on, in case the BIOS forgot. */ 313 pci_enable_busmaster(dev); 314 315 /* Allocate the PCI register window. */ 316 if ((error = tw_cl_get_pci_bar_info(sc->device_id, TW_CL_BAR_TYPE_MEM, 317 &bar_num, &bar0_offset, &bar_size))) { 318 tw_osli_printf(sc, "error = %d", 319 TW_CL_SEVERITY_ERROR_STRING, 320 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 321 0x201F, 322 "Can't get PCI BAR info", 323 error); 324 tw_osli_free_resources(sc); 325 return(error); 326 } 327 sc->reg_res_id = PCIR_BARS + bar0_offset; 328 if ((sc->reg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 329 &(sc->reg_res_id), RF_ACTIVE)) 330 == NULL) { 331 tw_osli_printf(sc, "error = %d", 332 TW_CL_SEVERITY_ERROR_STRING, 333 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 334 0x2002, 335 "Can't allocate register window", 336 ENXIO); 337 tw_osli_free_resources(sc); 338 return(ENXIO); 339 } 340 sc->bus_tag = rman_get_bustag(sc->reg_res); 341 sc->bus_handle = rman_get_bushandle(sc->reg_res); 342 343 /* Allocate and register our interrupt. */ 344 sc->irq_res_id = 0; 345 if ((sc->irq_res = bus_alloc_resource_any(sc->bus_dev, SYS_RES_IRQ, 346 &(sc->irq_res_id), 347 RF_SHAREABLE | RF_ACTIVE)) == NULL) { 348 tw_osli_printf(sc, "error = %d", 349 TW_CL_SEVERITY_ERROR_STRING, 350 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 351 0x2003, 352 "Can't allocate interrupt", 353 ENXIO); 354 tw_osli_free_resources(sc); 355 return(ENXIO); 356 } 357 if ((error = twa_setup_intr(sc))) { 358 tw_osli_printf(sc, "error = %d", 359 TW_CL_SEVERITY_ERROR_STRING, 360 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 361 0x2004, 362 "Can't set up interrupt", 363 error); 364 tw_osli_free_resources(sc); 365 return(error); 366 } 367 368 if ((error = tw_osli_alloc_mem(sc))) { 369 tw_osli_printf(sc, "error = %d", 370 TW_CL_SEVERITY_ERROR_STRING, 371 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 372 0x2005, 373 "Memory allocation failure", 374 error); 375 tw_osli_free_resources(sc); 376 return(error); 377 } 378 379 /* Initialize the Common Layer for this controller. */ 380 if ((error = tw_cl_init_ctlr(&sc->ctlr_handle, sc->flags, sc->device_id, 381 TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, 382 sc->non_dma_mem, sc->dma_mem, 383 sc->dma_mem_phys 384 ))) { 385 tw_osli_printf(sc, "error = %d", 386 TW_CL_SEVERITY_ERROR_STRING, 387 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 388 0x2006, 389 "Failed to initialize Common Layer/controller", 390 error); 391 tw_osli_free_resources(sc); 392 return(error); 393 } 394 395 /* Create the control device. */ 396 sc->ctrl_dev = make_dev(&twa_cdevsw, device_get_unit(sc->bus_dev), 397 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR, 398 "twa%d", device_get_unit(sc->bus_dev)); 399 sc->ctrl_dev->si_drv1 = sc; 400 401 if ((error = tw_osli_cam_attach(sc))) { 402 tw_osli_free_resources(sc); 403 tw_osli_printf(sc, "error = %d", 404 TW_CL_SEVERITY_ERROR_STRING, 405 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 406 0x2007, 407 "Failed to initialize CAM", 408 error); 409 return(error); 410 } 411 412 sc->watchdog_index = 0; 413 callout_init(&(sc->watchdog_callout[0]), 1); 414 callout_init(&(sc->watchdog_callout[1]), 1); 415 callout_reset(&(sc->watchdog_callout[0]), 5*hz, twa_watchdog, &sc->ctlr_handle); 416 gone_in_dev(dev, 13, "twa(4) removed"); 417 418 return(0); 419 } 420 421 static TW_VOID 422 twa_watchdog(TW_VOID *arg) 423 { 424 struct tw_cl_ctlr_handle *ctlr_handle = 425 (struct tw_cl_ctlr_handle *)arg; 426 struct twa_softc *sc = ctlr_handle->osl_ctlr_ctxt; 427 int i; 428 int i_need_a_reset = 0; 429 int driver_is_active = 0; 430 int my_watchdog_was_pending = 1234; 431 TW_UINT64 current_time; 432 struct tw_osli_req_context *my_req; 433 434 //============================================================================== 435 current_time = (TW_UINT64) (tw_osl_get_local_time()); 436 437 for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { 438 my_req = &(sc->req_ctx_buf[i]); 439 440 if ((my_req->state == TW_OSLI_REQ_STATE_BUSY) && 441 (my_req->deadline) && 442 (my_req->deadline < current_time)) { 443 tw_cl_set_reset_needed(ctlr_handle); 444 #ifdef TW_OSL_DEBUG 445 device_printf((sc)->bus_dev, "Request %d timed out! d = %llu, c = %llu\n", i, my_req->deadline, current_time); 446 #else /* TW_OSL_DEBUG */ 447 device_printf((sc)->bus_dev, "Request %d timed out!\n", i); 448 #endif /* TW_OSL_DEBUG */ 449 break; 450 } 451 } 452 //============================================================================== 453 454 i_need_a_reset = tw_cl_is_reset_needed(ctlr_handle); 455 456 i = (int) ((sc->watchdog_index++) & 1); 457 458 driver_is_active = tw_cl_is_active(ctlr_handle); 459 460 if (i_need_a_reset) { 461 #ifdef TW_OSL_DEBUG 462 device_printf((sc)->bus_dev, "Watchdog rescheduled in 70 seconds\n"); 463 #endif /* TW_OSL_DEBUG */ 464 my_watchdog_was_pending = 465 callout_reset(&(sc->watchdog_callout[i]), 70*hz, twa_watchdog, &sc->ctlr_handle); 466 tw_cl_reset_ctlr(ctlr_handle); 467 #ifdef TW_OSL_DEBUG 468 device_printf((sc)->bus_dev, "Watchdog reset completed!\n"); 469 #endif /* TW_OSL_DEBUG */ 470 } else if (driver_is_active) { 471 my_watchdog_was_pending = 472 callout_reset(&(sc->watchdog_callout[i]), 5*hz, twa_watchdog, &sc->ctlr_handle); 473 } 474 #ifdef TW_OSL_DEBUG 475 if (i_need_a_reset || my_watchdog_was_pending) 476 device_printf((sc)->bus_dev, "i_need_a_reset = %d, " 477 "driver_is_active = %d, my_watchdog_was_pending = %d\n", 478 i_need_a_reset, driver_is_active, my_watchdog_was_pending); 479 #endif /* TW_OSL_DEBUG */ 480 } 481 482 /* 483 * Function name: tw_osli_alloc_mem 484 * Description: Allocates memory needed both by CL and OSL. 485 * 486 * Input: sc -- OSL internal controller context 487 * Output: None 488 * Return value: 0 -- success 489 * non-zero-- failure 490 */ 491 static TW_INT32 492 tw_osli_alloc_mem(struct twa_softc *sc) 493 { 494 struct tw_osli_req_context *req; 495 TW_UINT32 max_sg_elements; 496 TW_UINT32 non_dma_mem_size; 497 TW_UINT32 dma_mem_size; 498 TW_INT32 error; 499 TW_INT32 i; 500 501 tw_osli_dbg_dprintf(3, sc, "entered"); 502 503 sc->flags |= (sizeof(bus_addr_t) == 8) ? TW_CL_64BIT_ADDRESSES : 0; 504 sc->flags |= (sizeof(bus_size_t) == 8) ? TW_CL_64BIT_SG_LENGTH : 0; 505 506 max_sg_elements = (sizeof(bus_addr_t) == 8) ? 507 TW_CL_MAX_64BIT_SG_ELEMENTS : TW_CL_MAX_32BIT_SG_ELEMENTS; 508 509 if ((error = tw_cl_get_mem_requirements(&sc->ctlr_handle, sc->flags, 510 sc->device_id, TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS, 511 &(sc->alignment), &(sc->sg_size_factor), 512 &non_dma_mem_size, &dma_mem_size 513 ))) { 514 tw_osli_printf(sc, "error = %d", 515 TW_CL_SEVERITY_ERROR_STRING, 516 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 517 0x2008, 518 "Can't get Common Layer's memory requirements", 519 error); 520 return(error); 521 } 522 523 if ((sc->non_dma_mem = malloc(non_dma_mem_size, TW_OSLI_MALLOC_CLASS, 524 M_WAITOK)) == NULL) { 525 tw_osli_printf(sc, "error = %d", 526 TW_CL_SEVERITY_ERROR_STRING, 527 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 528 0x2009, 529 "Can't allocate non-dma memory", 530 ENOMEM); 531 return(ENOMEM); 532 } 533 534 /* Create the parent dma tag. */ 535 if (bus_dma_tag_create(bus_get_dma_tag(sc->bus_dev), /* parent */ 536 sc->alignment, /* alignment */ 537 TW_OSLI_DMA_BOUNDARY, /* boundary */ 538 BUS_SPACE_MAXADDR, /* lowaddr */ 539 BUS_SPACE_MAXADDR, /* highaddr */ 540 NULL, NULL, /* filter, filterarg */ 541 TW_CL_MAX_IO_SIZE, /* maxsize */ 542 max_sg_elements, /* nsegments */ 543 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 544 0, /* flags */ 545 NULL, /* lockfunc */ 546 NULL, /* lockfuncarg */ 547 &sc->parent_tag /* tag */)) { 548 tw_osli_printf(sc, "error = %d", 549 TW_CL_SEVERITY_ERROR_STRING, 550 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 551 0x200A, 552 "Can't allocate parent DMA tag", 553 ENOMEM); 554 return(ENOMEM); 555 } 556 557 /* Create a dma tag for Common Layer's DMA'able memory (dma_mem). */ 558 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 559 sc->alignment, /* alignment */ 560 0, /* boundary */ 561 BUS_SPACE_MAXADDR, /* lowaddr */ 562 BUS_SPACE_MAXADDR, /* highaddr */ 563 NULL, NULL, /* filter, filterarg */ 564 dma_mem_size, /* maxsize */ 565 1, /* nsegments */ 566 BUS_SPACE_MAXSIZE, /* maxsegsize */ 567 0, /* flags */ 568 NULL, /* lockfunc */ 569 NULL, /* lockfuncarg */ 570 &sc->cmd_tag /* tag */)) { 571 tw_osli_printf(sc, "error = %d", 572 TW_CL_SEVERITY_ERROR_STRING, 573 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 574 0x200B, 575 "Can't allocate DMA tag for Common Layer's " 576 "DMA'able memory", 577 ENOMEM); 578 return(ENOMEM); 579 } 580 581 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 582 BUS_DMA_NOWAIT, &sc->cmd_map)) { 583 /* Try a second time. */ 584 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem, 585 BUS_DMA_NOWAIT, &sc->cmd_map)) { 586 tw_osli_printf(sc, "error = %d", 587 TW_CL_SEVERITY_ERROR_STRING, 588 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 589 0x200C, 590 "Can't allocate DMA'able memory for the" 591 "Common Layer", 592 ENOMEM); 593 return(ENOMEM); 594 } 595 } 596 597 bus_dmamap_load(sc->cmd_tag, sc->cmd_map, sc->dma_mem, 598 dma_mem_size, twa_map_load_callback, 599 &sc->dma_mem_phys, 0); 600 601 /* 602 * Create a dma tag for data buffers; size will be the maximum 603 * possible I/O size (128kB). 604 */ 605 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 606 sc->alignment, /* alignment */ 607 0, /* boundary */ 608 BUS_SPACE_MAXADDR, /* lowaddr */ 609 BUS_SPACE_MAXADDR, /* highaddr */ 610 NULL, NULL, /* filter, filterarg */ 611 TW_CL_MAX_IO_SIZE, /* maxsize */ 612 max_sg_elements, /* nsegments */ 613 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 614 BUS_DMA_ALLOCNOW, /* flags */ 615 twa_busdma_lock, /* lockfunc */ 616 sc->io_lock, /* lockfuncarg */ 617 &sc->dma_tag /* tag */)) { 618 tw_osli_printf(sc, "error = %d", 619 TW_CL_SEVERITY_ERROR_STRING, 620 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 621 0x200F, 622 "Can't allocate DMA tag for data buffers", 623 ENOMEM); 624 return(ENOMEM); 625 } 626 627 /* 628 * Create a dma tag for ioctl data buffers; size will be the maximum 629 * possible I/O size (128kB). 630 */ 631 if (bus_dma_tag_create(sc->parent_tag, /* parent */ 632 sc->alignment, /* alignment */ 633 0, /* boundary */ 634 BUS_SPACE_MAXADDR, /* lowaddr */ 635 BUS_SPACE_MAXADDR, /* highaddr */ 636 NULL, NULL, /* filter, filterarg */ 637 TW_CL_MAX_IO_SIZE, /* maxsize */ 638 max_sg_elements, /* nsegments */ 639 TW_CL_MAX_IO_SIZE, /* maxsegsize */ 640 BUS_DMA_ALLOCNOW, /* flags */ 641 twa_busdma_lock, /* lockfunc */ 642 sc->io_lock, /* lockfuncarg */ 643 &sc->ioctl_tag /* tag */)) { 644 tw_osli_printf(sc, "error = %d", 645 TW_CL_SEVERITY_ERROR_STRING, 646 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 647 0x2010, 648 "Can't allocate DMA tag for ioctl data buffers", 649 ENOMEM); 650 return(ENOMEM); 651 } 652 653 /* Create just one map for all ioctl request data buffers. */ 654 if (bus_dmamap_create(sc->ioctl_tag, 0, &sc->ioctl_map)) { 655 tw_osli_printf(sc, "error = %d", 656 TW_CL_SEVERITY_ERROR_STRING, 657 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 658 0x2011, 659 "Can't create ioctl map", 660 ENOMEM); 661 return(ENOMEM); 662 } 663 664 /* Initialize request queues. */ 665 tw_osli_req_q_init(sc, TW_OSLI_FREE_Q); 666 tw_osli_req_q_init(sc, TW_OSLI_BUSY_Q); 667 668 if ((sc->req_ctx_buf = (struct tw_osli_req_context *) 669 malloc((sizeof(struct tw_osli_req_context) * 670 TW_OSLI_MAX_NUM_REQUESTS), 671 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 672 tw_osli_printf(sc, "error = %d", 673 TW_CL_SEVERITY_ERROR_STRING, 674 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 675 0x2012, 676 "Failed to allocate request packets", 677 ENOMEM); 678 return(ENOMEM); 679 } 680 bzero(sc->req_ctx_buf, 681 sizeof(struct tw_osli_req_context) * TW_OSLI_MAX_NUM_REQUESTS); 682 683 for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) { 684 req = &(sc->req_ctx_buf[i]); 685 req->ctlr = sc; 686 if (bus_dmamap_create(sc->dma_tag, 0, &req->dma_map)) { 687 tw_osli_printf(sc, "request # = %d, error = %d", 688 TW_CL_SEVERITY_ERROR_STRING, 689 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 690 0x2013, 691 "Can't create dma map", 692 i, ENOMEM); 693 return(ENOMEM); 694 } 695 696 /* Initialize the ioctl wakeup/ timeout mutex */ 697 req->ioctl_wake_timeout_lock = &(req->ioctl_wake_timeout_lock_handle); 698 mtx_init(req->ioctl_wake_timeout_lock, "tw_ioctl_wake_timeout_lock", NULL, MTX_DEF); 699 700 /* Insert request into the free queue. */ 701 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 702 } 703 704 return(0); 705 } 706 707 /* 708 * Function name: tw_osli_free_resources 709 * Description: Performs clean-up at the time of going down. 710 * 711 * Input: sc -- ptr to OSL internal ctlr context 712 * Output: None 713 * Return value: None 714 */ 715 static TW_VOID 716 tw_osli_free_resources(struct twa_softc *sc) 717 { 718 struct tw_osli_req_context *req; 719 TW_INT32 error = 0; 720 721 tw_osli_dbg_dprintf(3, sc, "entered"); 722 723 /* Detach from CAM */ 724 tw_osli_cam_detach(sc); 725 726 if (sc->req_ctx_buf) 727 while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) != 728 NULL) { 729 mtx_destroy(req->ioctl_wake_timeout_lock); 730 731 if ((error = bus_dmamap_destroy(sc->dma_tag, 732 req->dma_map))) 733 tw_osli_dbg_dprintf(1, sc, 734 "dmamap_destroy(dma) returned %d", 735 error); 736 } 737 738 if ((sc->ioctl_tag) && (sc->ioctl_map)) 739 if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map))) 740 tw_osli_dbg_dprintf(1, sc, 741 "dmamap_destroy(ioctl) returned %d", error); 742 743 /* Free all memory allocated so far. */ 744 if (sc->req_ctx_buf) 745 free(sc->req_ctx_buf, TW_OSLI_MALLOC_CLASS); 746 747 if (sc->non_dma_mem) 748 free(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS); 749 750 if (sc->dma_mem) { 751 bus_dmamap_unload(sc->cmd_tag, sc->cmd_map); 752 bus_dmamem_free(sc->cmd_tag, sc->dma_mem, 753 sc->cmd_map); 754 } 755 if (sc->cmd_tag) 756 if ((error = bus_dma_tag_destroy(sc->cmd_tag))) 757 tw_osli_dbg_dprintf(1, sc, 758 "dma_tag_destroy(cmd) returned %d", error); 759 760 if (sc->dma_tag) 761 if ((error = bus_dma_tag_destroy(sc->dma_tag))) 762 tw_osli_dbg_dprintf(1, sc, 763 "dma_tag_destroy(dma) returned %d", error); 764 765 if (sc->ioctl_tag) 766 if ((error = bus_dma_tag_destroy(sc->ioctl_tag))) 767 tw_osli_dbg_dprintf(1, sc, 768 "dma_tag_destroy(ioctl) returned %d", error); 769 770 if (sc->parent_tag) 771 if ((error = bus_dma_tag_destroy(sc->parent_tag))) 772 tw_osli_dbg_dprintf(1, sc, 773 "dma_tag_destroy(parent) returned %d", error); 774 775 /* Disconnect the interrupt handler. */ 776 if ((error = twa_teardown_intr(sc))) 777 tw_osli_dbg_dprintf(1, sc, 778 "teardown_intr returned %d", error); 779 780 if (sc->irq_res != NULL) 781 if ((error = bus_release_resource(sc->bus_dev, 782 SYS_RES_IRQ, sc->irq_res_id, sc->irq_res))) 783 tw_osli_dbg_dprintf(1, sc, 784 "release_resource(irq) returned %d", error); 785 786 /* Release the register window mapping. */ 787 if (sc->reg_res != NULL) 788 if ((error = bus_release_resource(sc->bus_dev, 789 SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res))) 790 tw_osli_dbg_dprintf(1, sc, 791 "release_resource(io) returned %d", error); 792 793 /* Destroy the control device. */ 794 if (sc->ctrl_dev != (struct cdev *)NULL) 795 destroy_dev(sc->ctrl_dev); 796 797 if ((error = sysctl_ctx_free(&sc->sysctl_ctxt))) 798 tw_osli_dbg_dprintf(1, sc, 799 "sysctl_ctx_free returned %d", error); 800 801 } 802 803 /* 804 * Function name: twa_detach 805 * Description: Called when the controller is being detached from 806 * the pci bus. 807 * 808 * Input: dev -- bus device corresponding to the ctlr 809 * Output: None 810 * Return value: 0 -- success 811 * non-zero-- failure 812 */ 813 static TW_INT32 814 twa_detach(device_t dev) 815 { 816 struct twa_softc *sc = device_get_softc(dev); 817 TW_INT32 error; 818 819 tw_osli_dbg_dprintf(3, sc, "entered"); 820 821 error = EBUSY; 822 if (sc->open) { 823 tw_osli_printf(sc, "error = %d", 824 TW_CL_SEVERITY_ERROR_STRING, 825 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 826 0x2014, 827 "Device open", 828 error); 829 goto out; 830 } 831 832 /* Shut the controller down. */ 833 if ((error = twa_shutdown(dev))) 834 goto out; 835 836 /* Free all resources associated with this controller. */ 837 tw_osli_free_resources(sc); 838 error = 0; 839 840 out: 841 return(error); 842 } 843 844 /* 845 * Function name: twa_shutdown 846 * Description: Called at unload/shutdown time. Lets the controller 847 * know that we are going down. 848 * 849 * Input: dev -- bus device corresponding to the ctlr 850 * Output: None 851 * Return value: 0 -- success 852 * non-zero-- failure 853 */ 854 static TW_INT32 855 twa_shutdown(device_t dev) 856 { 857 struct twa_softc *sc = device_get_softc(dev); 858 TW_INT32 error = 0; 859 860 tw_osli_dbg_dprintf(3, sc, "entered"); 861 862 /* Disconnect interrupts. */ 863 error = twa_teardown_intr(sc); 864 865 /* Stop watchdog task. */ 866 callout_drain(&(sc->watchdog_callout[0])); 867 callout_drain(&(sc->watchdog_callout[1])); 868 869 /* Disconnect from the controller. */ 870 if ((error = tw_cl_shutdown_ctlr(&(sc->ctlr_handle), 0))) { 871 tw_osli_printf(sc, "error = %d", 872 TW_CL_SEVERITY_ERROR_STRING, 873 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 874 0x2015, 875 "Failed to shutdown Common Layer/controller", 876 error); 877 } 878 return(error); 879 } 880 881 /* 882 * Function name: twa_busdma_lock 883 * Description: Function to provide synchronization during busdma_swi. 884 * 885 * Input: lock_arg -- lock mutex sent as argument 886 * op -- operation (lock/unlock) expected of the function 887 * Output: None 888 * Return value: None 889 */ 890 TW_VOID 891 twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op) 892 { 893 struct mtx *lock; 894 895 lock = (struct mtx *)lock_arg; 896 switch (op) { 897 case BUS_DMA_LOCK: 898 mtx_lock_spin(lock); 899 break; 900 901 case BUS_DMA_UNLOCK: 902 mtx_unlock_spin(lock); 903 break; 904 905 default: 906 panic("Unknown operation 0x%x for twa_busdma_lock!", op); 907 } 908 } 909 910 /* 911 * Function name: twa_pci_intr 912 * Description: Interrupt handler. Wrapper for twa_interrupt. 913 * 914 * Input: arg -- ptr to OSL internal ctlr context 915 * Output: None 916 * Return value: None 917 */ 918 static TW_VOID 919 twa_pci_intr(TW_VOID *arg) 920 { 921 struct twa_softc *sc = (struct twa_softc *)arg; 922 923 tw_osli_dbg_dprintf(10, sc, "entered"); 924 tw_cl_interrupt(&(sc->ctlr_handle)); 925 } 926 927 /* 928 * Function name: tw_osli_fw_passthru 929 * Description: Builds a fw passthru cmd pkt, and submits it to CL. 930 * 931 * Input: sc -- ptr to OSL internal ctlr context 932 * buf -- ptr to ioctl pkt understood by CL 933 * Output: None 934 * Return value: 0 -- success 935 * non-zero-- failure 936 */ 937 TW_INT32 938 tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf) 939 { 940 struct tw_osli_req_context *req; 941 struct tw_osli_ioctl_no_data_buf *user_buf = 942 (struct tw_osli_ioctl_no_data_buf *)buf; 943 TW_TIME end_time; 944 TW_UINT32 timeout = 60; 945 TW_UINT32 data_buf_size_adjusted; 946 struct tw_cl_req_packet *req_pkt; 947 struct tw_cl_passthru_req_packet *pt_req; 948 TW_INT32 error; 949 950 tw_osli_dbg_dprintf(5, sc, "ioctl: passthru"); 951 952 if ((req = tw_osli_get_request(sc)) == NULL) 953 return(EBUSY); 954 955 req->req_handle.osl_req_ctxt = req; 956 req->orig_req = buf; 957 req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU; 958 959 req_pkt = &(req->req_pkt); 960 req_pkt->status = 0; 961 req_pkt->tw_osl_callback = tw_osl_complete_passthru; 962 /* Let the Common Layer retry the request on cmd queue full. */ 963 req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY; 964 965 pt_req = &(req_pkt->gen_req_pkt.pt_req); 966 /* 967 * Make sure that the data buffer sent to firmware is a 968 * 512 byte multiple in size. 969 */ 970 data_buf_size_adjusted = 971 (user_buf->driver_pkt.buffer_length + 972 (sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1); 973 if ((req->length = data_buf_size_adjusted)) { 974 if ((req->data = malloc(data_buf_size_adjusted, 975 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) { 976 error = ENOMEM; 977 tw_osli_printf(sc, "error = %d", 978 TW_CL_SEVERITY_ERROR_STRING, 979 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 980 0x2016, 981 "Could not alloc mem for " 982 "fw_passthru data_buf", 983 error); 984 goto fw_passthru_err; 985 } 986 /* Copy the payload. */ 987 if ((error = copyin((TW_VOID *)(user_buf->pdata), 988 req->data, 989 user_buf->driver_pkt.buffer_length)) != 0) { 990 tw_osli_printf(sc, "error = %d", 991 TW_CL_SEVERITY_ERROR_STRING, 992 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 993 0x2017, 994 "Could not copyin fw_passthru data_buf", 995 error); 996 goto fw_passthru_err; 997 } 998 pt_req->sgl_entries = 1; /* will be updated during mapping */ 999 req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN | 1000 TW_OSLI_REQ_FLAGS_DATA_OUT); 1001 } else 1002 pt_req->sgl_entries = 0; /* no payload */ 1003 1004 pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt)); 1005 pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet); 1006 1007 if ((error = tw_osli_map_request(req))) 1008 goto fw_passthru_err; 1009 1010 end_time = tw_osl_get_local_time() + timeout; 1011 while (req->state != TW_OSLI_REQ_STATE_COMPLETE) { 1012 mtx_lock(req->ioctl_wake_timeout_lock); 1013 req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING; 1014 1015 error = mtx_sleep(req, req->ioctl_wake_timeout_lock, 0, 1016 "twa_passthru", timeout*hz); 1017 mtx_unlock(req->ioctl_wake_timeout_lock); 1018 1019 if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING)) 1020 error = 0; 1021 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1022 1023 if (! error) { 1024 if (((error = req->error_code)) || 1025 ((error = (req->state != 1026 TW_OSLI_REQ_STATE_COMPLETE))) || 1027 ((error = req_pkt->status))) 1028 goto fw_passthru_err; 1029 break; 1030 } 1031 1032 if (req_pkt->status) { 1033 error = req_pkt->status; 1034 goto fw_passthru_err; 1035 } 1036 1037 if (error == EWOULDBLOCK) { 1038 /* Time out! */ 1039 if ((!(req->error_code)) && 1040 (req->state == TW_OSLI_REQ_STATE_COMPLETE) && 1041 (!(req_pkt->status)) ) { 1042 #ifdef TW_OSL_DEBUG 1043 tw_osli_printf(sc, "request = %p", 1044 TW_CL_SEVERITY_ERROR_STRING, 1045 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1046 0x7777, 1047 "FALSE Passthru timeout!", 1048 req); 1049 #endif /* TW_OSL_DEBUG */ 1050 error = 0; /* False error */ 1051 break; 1052 } 1053 if (!(tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) { 1054 #ifdef TW_OSL_DEBUG 1055 tw_osli_printf(sc, "request = %p", 1056 TW_CL_SEVERITY_ERROR_STRING, 1057 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1058 0x2018, 1059 "Passthru request timed out!", 1060 req); 1061 #else /* TW_OSL_DEBUG */ 1062 device_printf((sc)->bus_dev, "Passthru request timed out!\n"); 1063 #endif /* TW_OSL_DEBUG */ 1064 tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle)); 1065 } 1066 1067 error = 0; 1068 end_time = tw_osl_get_local_time() + timeout; 1069 continue; 1070 /* 1071 * Don't touch req after a reset. It (and any 1072 * associated data) will be 1073 * unmapped by the callback. 1074 */ 1075 } 1076 /* 1077 * Either the request got completed, or we were woken up by a 1078 * signal. Calculate the new timeout, in case it was the latter. 1079 */ 1080 timeout = (end_time - tw_osl_get_local_time()); 1081 } /* End of while loop */ 1082 1083 /* If there was a payload, copy it back. */ 1084 if ((!error) && (req->length)) 1085 if ((error = copyout(req->data, user_buf->pdata, 1086 user_buf->driver_pkt.buffer_length))) 1087 tw_osli_printf(sc, "error = %d", 1088 TW_CL_SEVERITY_ERROR_STRING, 1089 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1090 0x2019, 1091 "Could not copyout fw_passthru data_buf", 1092 error); 1093 1094 fw_passthru_err: 1095 1096 if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) 1097 error = EBUSY; 1098 1099 user_buf->driver_pkt.os_status = error; 1100 /* Free resources. */ 1101 if (req->data) 1102 free(req->data, TW_OSLI_MALLOC_CLASS); 1103 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1104 return(error); 1105 } 1106 1107 /* 1108 * Function name: tw_osl_complete_passthru 1109 * Description: Called to complete passthru requests. 1110 * 1111 * Input: req_handle -- ptr to request handle 1112 * Output: None 1113 * Return value: None 1114 */ 1115 TW_VOID 1116 tw_osl_complete_passthru(struct tw_cl_req_handle *req_handle) 1117 { 1118 struct tw_osli_req_context *req = req_handle->osl_req_ctxt; 1119 struct tw_cl_req_packet *req_pkt = 1120 (struct tw_cl_req_packet *)(&req->req_pkt); 1121 struct twa_softc *sc = req->ctlr; 1122 1123 tw_osli_dbg_dprintf(5, sc, "entered"); 1124 1125 if (req->state != TW_OSLI_REQ_STATE_BUSY) { 1126 tw_osli_printf(sc, "request = %p, status = %d", 1127 TW_CL_SEVERITY_ERROR_STRING, 1128 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1129 0x201B, 1130 "Unposted command completed!!", 1131 req, req->state); 1132 } 1133 1134 /* 1135 * Remove request from the busy queue. Just mark it complete. 1136 * There's no need to move it into the complete queue as we are 1137 * going to be done with it right now. 1138 */ 1139 req->state = TW_OSLI_REQ_STATE_COMPLETE; 1140 tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q); 1141 1142 tw_osli_unmap_request(req); 1143 1144 /* 1145 * Don't do a wake up if there was an error even before the request 1146 * was sent down to the Common Layer, and we hadn't gotten an 1147 * EINPROGRESS. The request originator will then be returned an 1148 * error, and he can do the clean-up. 1149 */ 1150 if ((req->error_code) && (!(req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS))) 1151 return; 1152 1153 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1154 if (req->flags & TW_OSLI_REQ_FLAGS_SLEEPING) { 1155 /* Wake up the sleeping command originator. */ 1156 tw_osli_dbg_dprintf(5, sc, 1157 "Waking up originator of request %p", req); 1158 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING; 1159 wakeup_one(req); 1160 } else { 1161 /* 1162 * If the request completed even before mtx_sleep 1163 * was called, simply return. 1164 */ 1165 if (req->flags & TW_OSLI_REQ_FLAGS_MAPPED) 1166 return; 1167 1168 if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET) 1169 return; 1170 1171 tw_osli_printf(sc, "request = %p", 1172 TW_CL_SEVERITY_ERROR_STRING, 1173 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1174 0x201C, 1175 "Passthru callback called, " 1176 "and caller not sleeping", 1177 req); 1178 } 1179 } else { 1180 tw_osli_printf(sc, "request = %p", 1181 TW_CL_SEVERITY_ERROR_STRING, 1182 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1183 0x201D, 1184 "Passthru callback called for non-passthru request", 1185 req); 1186 } 1187 } 1188 1189 /* 1190 * Function name: tw_osli_get_request 1191 * Description: Gets a request pkt from the free queue. 1192 * 1193 * Input: sc -- ptr to OSL internal ctlr context 1194 * Output: None 1195 * Return value: ptr to request pkt -- success 1196 * NULL -- failure 1197 */ 1198 struct tw_osli_req_context * 1199 tw_osli_get_request(struct twa_softc *sc) 1200 { 1201 struct tw_osli_req_context *req; 1202 1203 tw_osli_dbg_dprintf(4, sc, "entered"); 1204 1205 /* Get a free request packet. */ 1206 req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q); 1207 1208 /* Initialize some fields to their defaults. */ 1209 if (req) { 1210 req->req_handle.osl_req_ctxt = NULL; 1211 req->req_handle.cl_req_ctxt = NULL; 1212 req->req_handle.is_io = 0; 1213 req->data = NULL; 1214 req->length = 0; 1215 req->deadline = 0; 1216 req->real_data = NULL; 1217 req->real_length = 0; 1218 req->state = TW_OSLI_REQ_STATE_INIT;/* req being initialized */ 1219 req->flags = 0; 1220 req->error_code = 0; 1221 req->orig_req = NULL; 1222 1223 bzero(&(req->req_pkt), sizeof(struct tw_cl_req_packet)); 1224 } 1225 return(req); 1226 } 1227 1228 /* 1229 * Function name: twa_map_load_data_callback 1230 * Description: Callback of bus_dmamap_load for the buffer associated 1231 * with data. Updates the cmd pkt (size/sgl_entries 1232 * fields, as applicable) to reflect the number of sg 1233 * elements. 1234 * 1235 * Input: arg -- ptr to OSL internal request context 1236 * segs -- ptr to a list of segment descriptors 1237 * nsegments--# of segments 1238 * error -- 0 if no errors encountered before callback, 1239 * non-zero if errors were encountered 1240 * Output: None 1241 * Return value: None 1242 */ 1243 static TW_VOID 1244 twa_map_load_data_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1245 TW_INT32 nsegments, TW_INT32 error) 1246 { 1247 struct tw_osli_req_context *req = 1248 (struct tw_osli_req_context *)arg; 1249 struct twa_softc *sc = req->ctlr; 1250 struct tw_cl_req_packet *req_pkt = &(req->req_pkt); 1251 1252 tw_osli_dbg_dprintf(10, sc, "entered"); 1253 1254 if (error == EINVAL) { 1255 req->error_code = error; 1256 return; 1257 } 1258 1259 /* Mark the request as currently being processed. */ 1260 req->state = TW_OSLI_REQ_STATE_BUSY; 1261 /* Move the request into the busy queue. */ 1262 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1263 1264 req->flags |= TW_OSLI_REQ_FLAGS_MAPPED; 1265 1266 if (error == EFBIG) { 1267 req->error_code = error; 1268 goto out; 1269 } 1270 1271 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1272 struct tw_cl_passthru_req_packet *pt_req; 1273 1274 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1275 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1276 BUS_DMASYNC_PREREAD); 1277 1278 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1279 /* 1280 * If we're using an alignment buffer, and we're 1281 * writing data, copy the real data out. 1282 */ 1283 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1284 bcopy(req->real_data, req->data, req->real_length); 1285 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1286 BUS_DMASYNC_PREWRITE); 1287 } 1288 1289 pt_req = &(req_pkt->gen_req_pkt.pt_req); 1290 pt_req->sg_list = (TW_UINT8 *)segs; 1291 pt_req->sgl_entries += (nsegments - 1); 1292 error = tw_cl_fw_passthru(&(sc->ctlr_handle), req_pkt, 1293 &(req->req_handle)); 1294 } else { 1295 struct tw_cl_scsi_req_packet *scsi_req; 1296 1297 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) 1298 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1299 BUS_DMASYNC_PREREAD); 1300 1301 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) { 1302 /* 1303 * If we're using an alignment buffer, and we're 1304 * writing data, copy the real data out. 1305 */ 1306 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1307 bcopy(req->real_data, req->data, req->real_length); 1308 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1309 BUS_DMASYNC_PREWRITE); 1310 } 1311 1312 scsi_req = &(req_pkt->gen_req_pkt.scsi_req); 1313 scsi_req->sg_list = (TW_UINT8 *)segs; 1314 scsi_req->sgl_entries += (nsegments - 1); 1315 error = tw_cl_start_io(&(sc->ctlr_handle), req_pkt, 1316 &(req->req_handle)); 1317 } 1318 1319 out: 1320 if (error) { 1321 req->error_code = error; 1322 req_pkt->tw_osl_callback(&(req->req_handle)); 1323 /* 1324 * If the caller had been returned EINPROGRESS, and he has 1325 * registered a callback for handling completion, the callback 1326 * will never get called because we were unable to submit the 1327 * request. So, free up the request right here. 1328 */ 1329 if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS) 1330 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q); 1331 } 1332 } 1333 1334 /* 1335 * Function name: twa_map_load_callback 1336 * Description: Callback of bus_dmamap_load for the buffer associated 1337 * with a cmd pkt. 1338 * 1339 * Input: arg -- ptr to variable to hold phys addr 1340 * segs -- ptr to a list of segment descriptors 1341 * nsegments--# of segments 1342 * error -- 0 if no errors encountered before callback, 1343 * non-zero if errors were encountered 1344 * Output: None 1345 * Return value: None 1346 */ 1347 static TW_VOID 1348 twa_map_load_callback(TW_VOID *arg, bus_dma_segment_t *segs, 1349 TW_INT32 nsegments, TW_INT32 error) 1350 { 1351 *((bus_addr_t *)arg) = segs[0].ds_addr; 1352 } 1353 1354 /* 1355 * Function name: tw_osli_map_request 1356 * Description: Maps a cmd pkt and data associated with it, into 1357 * DMA'able memory. 1358 * 1359 * Input: req -- ptr to request pkt 1360 * Output: None 1361 * Return value: 0 -- success 1362 * non-zero-- failure 1363 */ 1364 TW_INT32 1365 tw_osli_map_request(struct tw_osli_req_context *req) 1366 { 1367 struct twa_softc *sc = req->ctlr; 1368 TW_INT32 error = 0; 1369 1370 tw_osli_dbg_dprintf(10, sc, "entered"); 1371 1372 /* If the command involves data, map that too. */ 1373 if (req->data != NULL) { 1374 /* 1375 * It's sufficient for the data pointer to be 4-byte aligned 1376 * to work with 9000. However, if 4-byte aligned addresses 1377 * are passed to bus_dmamap_load, we can get back sg elements 1378 * that are not 512-byte multiples in size. So, we will let 1379 * only those buffers that are 512-byte aligned to pass 1380 * through, and bounce the rest, so as to make sure that we 1381 * always get back sg elements that are 512-byte multiples 1382 * in size. 1383 */ 1384 if (((vm_offset_t)req->data % sc->sg_size_factor) || 1385 (req->length % sc->sg_size_factor)) { 1386 req->flags |= TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED; 1387 /* Save original data pointer and length. */ 1388 req->real_data = req->data; 1389 req->real_length = req->length; 1390 req->length = (req->length + 1391 (sc->sg_size_factor - 1)) & 1392 ~(sc->sg_size_factor - 1); 1393 req->data = malloc(req->length, TW_OSLI_MALLOC_CLASS, 1394 M_NOWAIT); 1395 if (req->data == NULL) { 1396 tw_osli_printf(sc, "error = %d", 1397 TW_CL_SEVERITY_ERROR_STRING, 1398 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1399 0x201E, 1400 "Failed to allocate memory " 1401 "for bounce buffer", 1402 ENOMEM); 1403 /* Restore original data pointer and length. */ 1404 req->data = req->real_data; 1405 req->length = req->real_length; 1406 return(ENOMEM); 1407 } 1408 } 1409 1410 /* 1411 * Map the data buffer into bus space and build the SG list. 1412 */ 1413 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1414 /* Lock against multiple simultaneous ioctl calls. */ 1415 mtx_lock_spin(sc->io_lock); 1416 error = bus_dmamap_load(sc->ioctl_tag, sc->ioctl_map, 1417 req->data, req->length, 1418 twa_map_load_data_callback, req, 1419 BUS_DMA_WAITOK); 1420 mtx_unlock_spin(sc->io_lock); 1421 } else if (req->flags & TW_OSLI_REQ_FLAGS_CCB) { 1422 error = bus_dmamap_load_ccb(sc->dma_tag, req->dma_map, 1423 req->orig_req, twa_map_load_data_callback, req, 1424 BUS_DMA_WAITOK); 1425 } else { 1426 /* 1427 * There's only one CAM I/O thread running at a time. 1428 * So, there's no need to hold the io_lock. 1429 */ 1430 error = bus_dmamap_load(sc->dma_tag, req->dma_map, 1431 req->data, req->length, 1432 twa_map_load_data_callback, req, 1433 BUS_DMA_WAITOK); 1434 } 1435 1436 if (!error) 1437 error = req->error_code; 1438 else { 1439 if (error == EINPROGRESS) { 1440 /* 1441 * Specifying sc->io_lock as the lockfuncarg 1442 * in ...tag_create should protect the access 1443 * of ...FLAGS_MAPPED from the callback. 1444 */ 1445 mtx_lock_spin(sc->io_lock); 1446 if (!(req->flags & TW_OSLI_REQ_FLAGS_MAPPED)) 1447 req->flags |= TW_OSLI_REQ_FLAGS_IN_PROGRESS; 1448 tw_osli_disallow_new_requests(sc, &(req->req_handle)); 1449 mtx_unlock_spin(sc->io_lock); 1450 error = 0; 1451 } else { 1452 tw_osli_printf(sc, "error = %d", 1453 TW_CL_SEVERITY_ERROR_STRING, 1454 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER, 1455 0x9999, 1456 "Failed to map DMA memory " 1457 "for I/O request", 1458 error); 1459 req->flags |= TW_OSLI_REQ_FLAGS_FAILED; 1460 /* Free alignment buffer if it was used. */ 1461 if (req->flags & 1462 TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1463 free(req->data, TW_OSLI_MALLOC_CLASS); 1464 /* 1465 * Restore original data pointer 1466 * and length. 1467 */ 1468 req->data = req->real_data; 1469 req->length = req->real_length; 1470 } 1471 } 1472 } 1473 1474 } else { 1475 /* Mark the request as currently being processed. */ 1476 req->state = TW_OSLI_REQ_STATE_BUSY; 1477 /* Move the request into the busy queue. */ 1478 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q); 1479 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) 1480 error = tw_cl_fw_passthru(&sc->ctlr_handle, 1481 &(req->req_pkt), &(req->req_handle)); 1482 else 1483 error = tw_cl_start_io(&sc->ctlr_handle, 1484 &(req->req_pkt), &(req->req_handle)); 1485 if (error) { 1486 req->error_code = error; 1487 req->req_pkt.tw_osl_callback(&(req->req_handle)); 1488 } 1489 } 1490 return(error); 1491 } 1492 1493 /* 1494 * Function name: tw_osli_unmap_request 1495 * Description: Undoes the mapping done by tw_osli_map_request. 1496 * 1497 * Input: req -- ptr to request pkt 1498 * Output: None 1499 * Return value: None 1500 */ 1501 TW_VOID 1502 tw_osli_unmap_request(struct tw_osli_req_context *req) 1503 { 1504 struct twa_softc *sc = req->ctlr; 1505 1506 tw_osli_dbg_dprintf(10, sc, "entered"); 1507 1508 /* If the command involved data, unmap that too. */ 1509 if (req->data != NULL) { 1510 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) { 1511 /* Lock against multiple simultaneous ioctl calls. */ 1512 mtx_lock_spin(sc->io_lock); 1513 1514 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1515 bus_dmamap_sync(sc->ioctl_tag, 1516 sc->ioctl_map, BUS_DMASYNC_POSTREAD); 1517 1518 /* 1519 * If we are using a bounce buffer, and we are 1520 * reading data, copy the real data in. 1521 */ 1522 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1523 bcopy(req->data, req->real_data, 1524 req->real_length); 1525 } 1526 1527 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1528 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map, 1529 BUS_DMASYNC_POSTWRITE); 1530 1531 bus_dmamap_unload(sc->ioctl_tag, sc->ioctl_map); 1532 1533 mtx_unlock_spin(sc->io_lock); 1534 } else { 1535 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) { 1536 bus_dmamap_sync(sc->dma_tag, 1537 req->dma_map, BUS_DMASYNC_POSTREAD); 1538 1539 /* 1540 * If we are using a bounce buffer, and we are 1541 * reading data, copy the real data in. 1542 */ 1543 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) 1544 bcopy(req->data, req->real_data, 1545 req->real_length); 1546 } 1547 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) 1548 bus_dmamap_sync(sc->dma_tag, req->dma_map, 1549 BUS_DMASYNC_POSTWRITE); 1550 1551 bus_dmamap_unload(sc->dma_tag, req->dma_map); 1552 } 1553 } 1554 1555 /* Free alignment buffer if it was used. */ 1556 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) { 1557 free(req->data, TW_OSLI_MALLOC_CLASS); 1558 /* Restore original data pointer and length. */ 1559 req->data = req->real_data; 1560 req->length = req->real_length; 1561 } 1562 } 1563 1564 #ifdef TW_OSL_DEBUG 1565 1566 TW_VOID twa_report_stats(TW_VOID); 1567 TW_VOID twa_reset_stats(TW_VOID); 1568 TW_VOID tw_osli_print_ctlr_stats(struct twa_softc *sc); 1569 TW_VOID twa_print_req_info(struct tw_osli_req_context *req); 1570 1571 /* 1572 * Function name: twa_report_stats 1573 * Description: For being called from ddb. Calls functions that print 1574 * OSL and CL internal stats for the controller. 1575 * 1576 * Input: None 1577 * Output: None 1578 * Return value: None 1579 */ 1580 TW_VOID 1581 twa_report_stats(TW_VOID) 1582 { 1583 struct twa_softc *sc; 1584 TW_INT32 i; 1585 1586 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1587 tw_osli_print_ctlr_stats(sc); 1588 tw_cl_print_ctlr_stats(&sc->ctlr_handle); 1589 } 1590 } 1591 1592 /* 1593 * Function name: tw_osli_print_ctlr_stats 1594 * Description: For being called from ddb. Prints OSL controller stats 1595 * 1596 * Input: sc -- ptr to OSL internal controller context 1597 * Output: None 1598 * Return value: None 1599 */ 1600 TW_VOID 1601 tw_osli_print_ctlr_stats(struct twa_softc *sc) 1602 { 1603 twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc); 1604 twa_printf(sc, "OSLq type current max\n"); 1605 twa_printf(sc, "free %04d %04d\n", 1606 sc->q_stats[TW_OSLI_FREE_Q].cur_len, 1607 sc->q_stats[TW_OSLI_FREE_Q].max_len); 1608 twa_printf(sc, "busy %04d %04d\n", 1609 sc->q_stats[TW_OSLI_BUSY_Q].cur_len, 1610 sc->q_stats[TW_OSLI_BUSY_Q].max_len); 1611 } 1612 1613 /* 1614 * Function name: twa_print_req_info 1615 * Description: For being called from ddb. Calls functions that print 1616 * OSL and CL internal details for the request. 1617 * 1618 * Input: req -- ptr to OSL internal request context 1619 * Output: None 1620 * Return value: None 1621 */ 1622 TW_VOID 1623 twa_print_req_info(struct tw_osli_req_context *req) 1624 { 1625 struct twa_softc *sc = req->ctlr; 1626 1627 twa_printf(sc, "OSL details for request:\n"); 1628 twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n" 1629 "data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n" 1630 "state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n" 1631 "next_req = %p, prev_req = %p, dma_map = %p\n", 1632 req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt, 1633 req->data, req->length, req->real_data, req->real_length, 1634 req->state, req->flags, req->error_code, req->orig_req, 1635 req->link.next, req->link.prev, req->dma_map); 1636 tw_cl_print_req_info(&(req->req_handle)); 1637 } 1638 1639 /* 1640 * Function name: twa_reset_stats 1641 * Description: For being called from ddb. 1642 * Resets some OSL controller stats. 1643 * 1644 * Input: None 1645 * Output: None 1646 * Return value: None 1647 */ 1648 TW_VOID 1649 twa_reset_stats(TW_VOID) 1650 { 1651 struct twa_softc *sc; 1652 TW_INT32 i; 1653 1654 for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) { 1655 sc->q_stats[TW_OSLI_FREE_Q].max_len = 0; 1656 sc->q_stats[TW_OSLI_BUSY_Q].max_len = 0; 1657 tw_cl_reset_stats(&sc->ctlr_handle); 1658 } 1659 } 1660 1661 #endif /* TW_OSL_DEBUG */
Cache object: 2dbf873c41b14a6d55f0ec0bdc229da1
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