sys/dev/twa/tw_osl_freebsd.c

   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  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*
  34  * AMCC'S 3ware driver for 9000 series storage controllers.
  35  *
  36  * Author: Vinod Kashyap
  37  * Modifications by: Adam Radford
  38  * Modifications by: Manjunath Ranganathaiah
  39  */
  40
  41
  42 /*
  43  * FreeBSD specific functions not related to CAM, and other
  44  * miscellaneous functions.
  45  */
  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
  61 static  d_open_t                twa_open;
  62 static  d_close_t               twa_close;
  63 static  d_ioctl_t               twa_ioctl;
  64
  65 static struct cdevsw twa_cdevsw = {
  66         .d_version =    D_VERSION,
  67         .d_open =       twa_open,
  68         .d_close =      twa_close,
  69         .d_ioctl =      twa_ioctl,
  70         .d_name =       "twa",
  71 };
  72
  73 static devclass_t       twa_devclass;
  74
  75
  76 /*
  77  * Function name:       twa_open
  78  * Description:         Called when the controller is opened.
  79  *                      Simply marks the controller as open.
  80  *
  81  * Input:               dev     -- control device corresponding to the ctlr
  82  *                      flags   -- mode of open
  83  *                      fmt     -- device type (character/block etc.)
  84  *                      proc    -- current process
  85  * Output:              None
  86  * Return value:        0       -- success
  87  *                      non-zero-- failure
  88  */
  89 static TW_INT32
  90 twa_open(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc)
  91 {
  92         struct twa_softc        *sc = (struct twa_softc *)(dev->si_drv1);
  93
  94         tw_osli_dbg_dprintf(5, sc, "entered");
  95         sc->open = TW_CL_TRUE;
  96         return(0);
  97 }
  98
  99
 100
 101 /*
 102  * Function name:       twa_close
 103  * Description:         Called when the controller is closed.
 104  *                      Simply marks the controller as not open.
 105  *
 106  * Input:               dev     -- control device corresponding to the ctlr
 107  *                      flags   -- mode of corresponding open
 108  *                      fmt     -- device type (character/block etc.)
 109  *                      proc    -- current process
 110  * Output:              None
 111  * Return value:        0       -- success
 112  *                      non-zero-- failure
 113  */
 114 static TW_INT32
 115 twa_close(struct cdev *dev, TW_INT32 flags, TW_INT32 fmt, struct thread *proc)
 116 {
 117         struct twa_softc        *sc = (struct twa_softc *)(dev->si_drv1);
 118
 119         tw_osli_dbg_dprintf(5, sc, "entered");
 120         sc->open = TW_CL_FALSE;
 121         return(0);
 122 }
 123
 124
 125
 126 /*
 127  * Function name:       twa_ioctl
 128  * Description:         Called when an ioctl is posted to the controller.
 129  *                      Handles any OS Layer specific cmds, passes the rest
 130  *                      on to the Common Layer.
 131  *
 132  * Input:               dev     -- control device corresponding to the ctlr
 133  *                      cmd     -- ioctl cmd
 134  *                      buf     -- ptr to buffer in kernel memory, which is
 135  *                                 a copy of the input buffer in user-space
 136  *                      flags   -- mode of corresponding open
 137  *                      proc    -- current process
 138  * Output:              buf     -- ptr to buffer in kernel memory, which will
 139  *                                 be copied to the output buffer in user-space
 140  * Return value:        0       -- success
 141  *                      non-zero-- failure
 142  */
 143 static TW_INT32
 144 twa_ioctl(struct cdev *dev, u_long cmd, caddr_t buf, TW_INT32 flags, struct thread *proc)
 145 {
 146         struct twa_softc        *sc = (struct twa_softc *)(dev->si_drv1);
 147         TW_INT32                error;
 148
 149         tw_osli_dbg_dprintf(5, sc, "entered");
 150
 151         switch (cmd) {
 152         case TW_OSL_IOCTL_FIRMWARE_PASS_THROUGH:
 153                 tw_osli_dbg_dprintf(6, sc, "ioctl: fw_passthru");
 154                 error = tw_osli_fw_passthru(sc, (TW_INT8 *)buf);
 155                 break;
 156
 157         case TW_OSL_IOCTL_SCAN_BUS:
 158                 /* Request CAM for a bus scan. */
 159                 tw_osli_dbg_dprintf(6, sc, "ioctl: scan bus");
 160                 error = tw_osli_request_bus_scan(sc);
 161                 break;
 162
 163         default:
 164                 tw_osli_dbg_dprintf(6, sc, "ioctl: 0x%lx", cmd);
 165                 error = tw_cl_ioctl(&sc->ctlr_handle, cmd, buf);
 166                 break;
 167         }
 168         return(error);
 169 }
 170
 171
 172
 173 static TW_INT32 twa_probe(device_t dev);
 174 static TW_INT32 twa_attach(device_t dev);
 175 static TW_INT32 twa_detach(device_t dev);
 176 static TW_INT32 twa_shutdown(device_t dev);
 177 static TW_VOID  twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op);
 178 static TW_VOID  twa_pci_intr(TW_VOID *arg);
 179 static TW_VOID  twa_watchdog(TW_VOID *arg);
 180 int twa_setup_intr(struct twa_softc *sc);
 181 int twa_teardown_intr(struct twa_softc *sc);
 182
 183 static TW_INT32 tw_osli_alloc_mem(struct twa_softc *sc);
 184 static TW_VOID  tw_osli_free_resources(struct twa_softc *sc);
 185
 186 static TW_VOID  twa_map_load_data_callback(TW_VOID *arg,
 187         bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error);
 188 static TW_VOID  twa_map_load_callback(TW_VOID *arg,
 189         bus_dma_segment_t *segs, TW_INT32 nsegments, TW_INT32 error);
 190
 191
 192 static device_method_t  twa_methods[] = {
 193         /* Device interface */
 194         DEVMETHOD(device_probe,         twa_probe),
 195         DEVMETHOD(device_attach,        twa_attach),
 196         DEVMETHOD(device_detach,        twa_detach),
 197         DEVMETHOD(device_shutdown,      twa_shutdown),
 198
 199         DEVMETHOD_END
 200 };
 201
 202 static driver_t twa_pci_driver = {
 203         "twa",
 204         twa_methods,
 205         sizeof(struct twa_softc)
 206 };
 207
 208 DRIVER_MODULE(twa, pci, twa_pci_driver, twa_devclass, 0, 0);
 209 MODULE_DEPEND(twa, cam, 1, 1, 1);
 210 MODULE_DEPEND(twa, pci, 1, 1, 1);
 211
 212
 213 /*
 214  * Function name:       twa_probe
 215  * Description:         Called at driver load time.  Claims 9000 ctlrs.
 216  *
 217  * Input:               dev     -- bus device corresponding to the ctlr
 218  * Output:              None
 219  * Return value:        <= 0    -- success
 220  *                      > 0     -- failure
 221  */
 222 static TW_INT32
 223 twa_probe(device_t dev)
 224 {
 225         static TW_UINT8 first_ctlr = 1;
 226
 227         tw_osli_dbg_printf(3, "entered");
 228
 229         if (tw_cl_ctlr_supported(pci_get_vendor(dev), pci_get_device(dev))) {
 230                 device_set_desc(dev, TW_OSLI_DEVICE_NAME);
 231                 /* Print the driver version only once. */
 232                 if (first_ctlr) {
 233                         printf("3ware device driver for 9000 series storage "
 234                                 "controllers, version: %s\n",
 235                                 TW_OSL_DRIVER_VERSION_STRING);
 236                         first_ctlr = 0;
 237                 }
 238                 return(0);
 239         }
 240         return(ENXIO);
 241 }
 242
 243 int twa_setup_intr(struct twa_softc *sc)
 244 {
 245         int error = 0;
 246
 247         if (!(sc->intr_handle) && (sc->irq_res)) {
 248                 error = bus_setup_intr(sc->bus_dev, sc->irq_res,
 249                                         INTR_TYPE_CAM | INTR_MPSAFE,
 250                                         NULL, twa_pci_intr,
 251                                         sc, &sc->intr_handle);
 252         }
 253         return( error );
 254 }
 255
 256
 257 int twa_teardown_intr(struct twa_softc *sc)
 258 {
 259         int error = 0;
 260
 261         if ((sc->intr_handle) && (sc->irq_res)) {
 262                 error = bus_teardown_intr(sc->bus_dev,
 263                                                 sc->irq_res, sc->intr_handle);
 264                 sc->intr_handle = NULL;
 265         }
 266         return( error );
 267 }
 268
 269
 270
 271 /*
 272  * Function name:       twa_attach
 273  * Description:         Allocates pci resources; updates sc; adds a node to the
 274  *                      sysctl tree to expose the driver version; makes calls
 275  *                      (to the Common Layer) to initialize ctlr, and to
 276  *                      attach to CAM.
 277  *
 278  * Input:               dev     -- bus device corresponding to the ctlr
 279  * Output:              None
 280  * Return value:        0       -- success
 281  *                      non-zero-- failure
 282  */
 283 static TW_INT32
 284 twa_attach(device_t dev)
 285 {
 286         struct twa_softc        *sc = device_get_softc(dev);
 287         TW_UINT32               command;
 288         TW_INT32                bar_num;
 289         TW_INT32                bar0_offset;
 290         TW_INT32                bar_size;
 291         TW_INT32                error;
 292
 293         tw_osli_dbg_dprintf(3, sc, "entered");
 294
 295         sc->ctlr_handle.osl_ctlr_ctxt = sc;
 296
 297         /* Initialize the softc structure. */
 298         sc->bus_dev = dev;
 299         sc->device_id = pci_get_device(dev);
 300
 301         /* Initialize the mutexes right here. */
 302         sc->io_lock = &(sc->io_lock_handle);
 303         mtx_init(sc->io_lock, "tw_osl_io_lock", NULL, MTX_SPIN);
 304         sc->q_lock = &(sc->q_lock_handle);
 305         mtx_init(sc->q_lock, "tw_osl_q_lock", NULL, MTX_SPIN);
 306         sc->sim_lock = &(sc->sim_lock_handle);
 307         mtx_init(sc->sim_lock, "tw_osl_sim_lock", NULL, MTX_DEF | MTX_RECURSE);
 308
 309         sysctl_ctx_init(&sc->sysctl_ctxt);
 310         sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctxt,
 311                 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO,
 312                 device_get_nameunit(dev), CTLFLAG_RD, 0, "");
 313         if (sc->sysctl_tree == NULL) {
 314                 tw_osli_printf(sc, "error = %d",
 315                         TW_CL_SEVERITY_ERROR_STRING,
 316                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 317                         0x2000,
 318                         "Cannot add sysctl tree node",
 319                         ENXIO);
 320                 return(ENXIO);
 321         }
 322         SYSCTL_ADD_STRING(&sc->sysctl_ctxt, SYSCTL_CHILDREN(sc->sysctl_tree),
 323                 OID_AUTO, "driver_version", CTLFLAG_RD,
 324                 TW_OSL_DRIVER_VERSION_STRING, 0, "TWA driver version");
 325
 326         /* Make sure we are going to be able to talk to this board. */
 327         command = pci_read_config(dev, PCIR_COMMAND, 2);
 328         if ((command & PCIM_CMD_PORTEN) == 0) {
 329                 tw_osli_printf(sc, "error = %d",
 330                         TW_CL_SEVERITY_ERROR_STRING,
 331                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 332                         0x2001,
 333                         "Register window not available",
 334                         ENXIO);
 335                 tw_osli_free_resources(sc);
 336                 return(ENXIO);
 337         }
 338
 339         /* Force the busmaster enable bit on, in case the BIOS forgot. */
 340         command |= PCIM_CMD_BUSMASTEREN;
 341         pci_write_config(dev, PCIR_COMMAND, command, 2);
 342
 343         /* Allocate the PCI register window. */
 344         if ((error = tw_cl_get_pci_bar_info(sc->device_id, TW_CL_BAR_TYPE_MEM,
 345                 &bar_num, &bar0_offset, &bar_size))) {
 346                 tw_osli_printf(sc, "error = %d",
 347                         TW_CL_SEVERITY_ERROR_STRING,
 348                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 349                         0x201F,
 350                         "Can't get PCI BAR info",
 351                         error);
 352                 tw_osli_free_resources(sc);
 353                 return(error);
 354         }
 355         sc->reg_res_id = PCIR_BARS + bar0_offset;
 356         if ((sc->reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY,
 357                                 &(sc->reg_res_id), 0, ~0, 1, RF_ACTIVE))
 358                                 == NULL) {
 359                 tw_osli_printf(sc, "error = %d",
 360                         TW_CL_SEVERITY_ERROR_STRING,
 361                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 362                         0x2002,
 363                         "Can't allocate register window",
 364                         ENXIO);
 365                 tw_osli_free_resources(sc);
 366                 return(ENXIO);
 367         }
 368         sc->bus_tag = rman_get_bustag(sc->reg_res);
 369         sc->bus_handle = rman_get_bushandle(sc->reg_res);
 370
 371         /* Allocate and register our interrupt. */
 372         sc->irq_res_id = 0;
 373         if ((sc->irq_res = bus_alloc_resource(sc->bus_dev, SYS_RES_IRQ,
 374                                 &(sc->irq_res_id), 0, ~0, 1,
 375                                 RF_SHAREABLE | RF_ACTIVE)) == NULL) {
 376                 tw_osli_printf(sc, "error = %d",
 377                         TW_CL_SEVERITY_ERROR_STRING,
 378                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 379                         0x2003,
 380                         "Can't allocate interrupt",
 381                         ENXIO);
 382                 tw_osli_free_resources(sc);
 383                 return(ENXIO);
 384         }
 385         if ((error = twa_setup_intr(sc))) {
 386                 tw_osli_printf(sc, "error = %d",
 387                         TW_CL_SEVERITY_ERROR_STRING,
 388                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 389                         0x2004,
 390                         "Can't set up interrupt",
 391                         error);
 392                 tw_osli_free_resources(sc);
 393                 return(error);
 394         }
 395
 396         if ((error = tw_osli_alloc_mem(sc))) {
 397                 tw_osli_printf(sc, "error = %d",
 398                         TW_CL_SEVERITY_ERROR_STRING,
 399                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 400                         0x2005,
 401                         "Memory allocation failure",
 402                         error);
 403                 tw_osli_free_resources(sc);
 404                 return(error);
 405         }
 406
 407         /* Initialize the Common Layer for this controller. */
 408         if ((error = tw_cl_init_ctlr(&sc->ctlr_handle, sc->flags, sc->device_id,
 409                         TW_OSLI_MAX_NUM_REQUESTS, TW_OSLI_MAX_NUM_AENS,
 410                         sc->non_dma_mem, sc->dma_mem,
 411                         sc->dma_mem_phys
 412                         ))) {
 413                 tw_osli_printf(sc, "error = %d",
 414                         TW_CL_SEVERITY_ERROR_STRING,
 415                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 416                         0x2006,
 417                         "Failed to initialize Common Layer/controller",
 418                         error);
 419                 tw_osli_free_resources(sc);
 420                 return(error);
 421         }
 422
 423         /* Create the control device. */
 424         sc->ctrl_dev = make_dev(&twa_cdevsw, device_get_unit(sc->bus_dev),
 425                         UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
 426                         "twa%d", device_get_unit(sc->bus_dev));
 427         sc->ctrl_dev->si_drv1 = sc;
 428
 429         if ((error = tw_osli_cam_attach(sc))) {
 430                 tw_osli_free_resources(sc);
 431                 tw_osli_printf(sc, "error = %d",
 432                         TW_CL_SEVERITY_ERROR_STRING,
 433                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 434                         0x2007,
 435                         "Failed to initialize CAM",
 436                         error);
 437                 return(error);
 438         }
 439
 440         sc->watchdog_index = 0;
 441         callout_init(&(sc->watchdog_callout[0]), CALLOUT_MPSAFE);
 442         callout_init(&(sc->watchdog_callout[1]), CALLOUT_MPSAFE);
 443         callout_reset(&(sc->watchdog_callout[0]), 5*hz, twa_watchdog, &sc->ctlr_handle);
 444
 445         return(0);
 446 }
 447
 448
 449 static TW_VOID
 450 twa_watchdog(TW_VOID *arg)
 451 {
 452         struct tw_cl_ctlr_handle *ctlr_handle =
 453                 (struct tw_cl_ctlr_handle *)arg;
 454         struct twa_softc                *sc = ctlr_handle->osl_ctlr_ctxt;
 455         int                             i;
 456         int                             i_need_a_reset = 0;
 457         int                             driver_is_active = 0;
 458         int                             my_watchdog_was_pending = 1234;
 459         TW_UINT64                       current_time;
 460         struct tw_osli_req_context      *my_req;
 461
 462
 463 //==============================================================================
 464         current_time = (TW_UINT64) (tw_osl_get_local_time());
 465
 466         for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) {
 467                 my_req = &(sc->req_ctx_buf[i]);
 468
 469                 if ((my_req->state == TW_OSLI_REQ_STATE_BUSY) &&
 470                         (my_req->deadline) &&
 471                         (my_req->deadline < current_time)) {
 472                         tw_cl_set_reset_needed(ctlr_handle);
 473 #ifdef    TW_OSL_DEBUG
 474                         device_printf((sc)->bus_dev, "Request %d timed out! d = %llu, c = %llu\n", i, my_req->deadline, current_time);
 475 #else  /* TW_OSL_DEBUG */
 476                         device_printf((sc)->bus_dev, "Request %d timed out!\n", i);
 477 #endif /* TW_OSL_DEBUG */
 478                         break;
 479                 }
 480         }
 481 //==============================================================================
 482
 483         i_need_a_reset = tw_cl_is_reset_needed(ctlr_handle);
 484
 485         i = (int) ((sc->watchdog_index++) & 1);
 486
 487         driver_is_active = tw_cl_is_active(ctlr_handle);
 488
 489         if (i_need_a_reset) {
 490 #ifdef    TW_OSL_DEBUG
 491                 device_printf((sc)->bus_dev, "Watchdog rescheduled in 70 seconds\n");
 492 #endif /* TW_OSL_DEBUG */
 493                 my_watchdog_was_pending =
 494                         callout_reset(&(sc->watchdog_callout[i]), 70*hz, twa_watchdog, &sc->ctlr_handle);
 495                 tw_cl_reset_ctlr(ctlr_handle);
 496 #ifdef    TW_OSL_DEBUG
 497                 device_printf((sc)->bus_dev, "Watchdog reset completed!\n");
 498 #endif /* TW_OSL_DEBUG */
 499         } else if (driver_is_active) {
 500                 my_watchdog_was_pending =
 501                         callout_reset(&(sc->watchdog_callout[i]),  5*hz, twa_watchdog, &sc->ctlr_handle);
 502         }
 503 #ifdef    TW_OSL_DEBUG
 504         if (i_need_a_reset || my_watchdog_was_pending)
 505                 device_printf((sc)->bus_dev, "i_need_a_reset = %d, "
 506                 "driver_is_active = %d, my_watchdog_was_pending = %d\n",
 507                 i_need_a_reset, driver_is_active, my_watchdog_was_pending);
 508 #endif /* TW_OSL_DEBUG */
 509 }
 510
 511
 512 /*
 513  * Function name:       tw_osli_alloc_mem
 514  * Description:         Allocates memory needed both by CL and OSL.
 515  *
 516  * Input:               sc      -- OSL internal controller context
 517  * Output:              None
 518  * Return value:        0       -- success
 519  *                      non-zero-- failure
 520  */
 521 static TW_INT32
 522 tw_osli_alloc_mem(struct twa_softc *sc)
 523 {
 524         struct tw_osli_req_context      *req;
 525         TW_UINT32                       max_sg_elements;
 526         TW_UINT32                       non_dma_mem_size;
 527         TW_UINT32                       dma_mem_size;
 528         TW_INT32                        error;
 529         TW_INT32                        i;
 530
 531         tw_osli_dbg_dprintf(3, sc, "entered");
 532
 533         sc->flags |= (sizeof(bus_addr_t) == 8) ? TW_CL_64BIT_ADDRESSES : 0;
 534         sc->flags |= (sizeof(bus_size_t) == 8) ? TW_CL_64BIT_SG_LENGTH : 0;
 535
 536         max_sg_elements = (sizeof(bus_addr_t) == 8) ?
 537                 TW_CL_MAX_64BIT_SG_ELEMENTS : TW_CL_MAX_32BIT_SG_ELEMENTS;
 538
 539         if ((error = tw_cl_get_mem_requirements(&sc->ctlr_handle, sc->flags,
 540                         sc->device_id, TW_OSLI_MAX_NUM_REQUESTS,  TW_OSLI_MAX_NUM_AENS,
 541                         &(sc->alignment), &(sc->sg_size_factor),
 542                         &non_dma_mem_size, &dma_mem_size
 543                         ))) {
 544                 tw_osli_printf(sc, "error = %d",
 545                         TW_CL_SEVERITY_ERROR_STRING,
 546                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 547                         0x2008,
 548                         "Can't get Common Layer's memory requirements",
 549                         error);
 550                 return(error);
 551         }
 552
 553         if ((sc->non_dma_mem = malloc(non_dma_mem_size, TW_OSLI_MALLOC_CLASS,
 554                                 M_WAITOK)) == NULL) {
 555                 tw_osli_printf(sc, "error = %d",
 556                         TW_CL_SEVERITY_ERROR_STRING,
 557                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 558                         0x2009,
 559                         "Can't allocate non-dma memory",
 560                         ENOMEM);
 561                 return(ENOMEM);
 562         }
 563
 564         /* Create the parent dma tag. */
 565         if (bus_dma_tag_create(bus_get_dma_tag(sc->bus_dev), /* parent */
 566                                 sc->alignment,          /* alignment */
 567                                 0,                      /* boundary */
 568                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 569                                 BUS_SPACE_MAXADDR,      /* highaddr */
 570                                 NULL, NULL,             /* filter, filterarg */
 571                                 TW_CL_MAX_IO_SIZE,      /* maxsize */
 572                                 max_sg_elements,        /* nsegments */
 573                                 TW_CL_MAX_IO_SIZE,      /* maxsegsize */
 574                                 0,                      /* flags */
 575                                 NULL,                   /* lockfunc */
 576                                 NULL,                   /* lockfuncarg */
 577                                 &sc->parent_tag         /* tag */)) {
 578                 tw_osli_printf(sc, "error = %d",
 579                         TW_CL_SEVERITY_ERROR_STRING,
 580                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 581                         0x200A,
 582                         "Can't allocate parent DMA tag",
 583                         ENOMEM);
 584                 return(ENOMEM);
 585         }
 586
 587         /* Create a dma tag for Common Layer's DMA'able memory (dma_mem). */
 588         if (bus_dma_tag_create(sc->parent_tag,          /* parent */
 589                                 sc->alignment,          /* alignment */
 590                                 0,                      /* boundary */
 591                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 592                                 BUS_SPACE_MAXADDR,      /* highaddr */
 593                                 NULL, NULL,             /* filter, filterarg */
 594                                 dma_mem_size,           /* maxsize */
 595                                 1,                      /* nsegments */
 596                                 BUS_SPACE_MAXSIZE,      /* maxsegsize */
 597                                 0,                      /* flags */
 598                                 NULL,                   /* lockfunc */
 599                                 NULL,                   /* lockfuncarg */
 600                                 &sc->cmd_tag            /* tag */)) {
 601                 tw_osli_printf(sc, "error = %d",
 602                         TW_CL_SEVERITY_ERROR_STRING,
 603                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 604                         0x200B,
 605                         "Can't allocate DMA tag for Common Layer's "
 606                         "DMA'able memory",
 607                         ENOMEM);
 608                 return(ENOMEM);
 609         }
 610
 611         if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem,
 612                 BUS_DMA_NOWAIT, &sc->cmd_map)) {
 613                 /* Try a second time. */
 614                 if (bus_dmamem_alloc(sc->cmd_tag, &sc->dma_mem,
 615                         BUS_DMA_NOWAIT, &sc->cmd_map)) {
 616                         tw_osli_printf(sc, "error = %d",
 617                                 TW_CL_SEVERITY_ERROR_STRING,
 618                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 619                                 0x200C,
 620                                 "Can't allocate DMA'able memory for the"
 621                                 "Common Layer",
 622                                 ENOMEM);
 623                         return(ENOMEM);
 624                 }
 625         }
 626
 627         bus_dmamap_load(sc->cmd_tag, sc->cmd_map, sc->dma_mem,
 628                 dma_mem_size, twa_map_load_callback,
 629                 &sc->dma_mem_phys, 0);
 630
 631         /*
 632          * Create a dma tag for data buffers; size will be the maximum
 633          * possible I/O size (128kB).
 634          */
 635         if (bus_dma_tag_create(sc->parent_tag,          /* parent */
 636                                 sc->alignment,          /* alignment */
 637                                 0,                      /* boundary */
 638                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 639                                 BUS_SPACE_MAXADDR,      /* highaddr */
 640                                 NULL, NULL,             /* filter, filterarg */
 641                                 TW_CL_MAX_IO_SIZE,      /* maxsize */
 642                                 max_sg_elements,        /* nsegments */
 643                                 TW_CL_MAX_IO_SIZE,      /* maxsegsize */
 644                                 BUS_DMA_ALLOCNOW,       /* flags */
 645                                 twa_busdma_lock,        /* lockfunc */
 646                                 sc->io_lock,            /* lockfuncarg */
 647                                 &sc->dma_tag            /* tag */)) {
 648                 tw_osli_printf(sc, "error = %d",
 649                         TW_CL_SEVERITY_ERROR_STRING,
 650                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 651                         0x200F,
 652                         "Can't allocate DMA tag for data buffers",
 653                         ENOMEM);
 654                 return(ENOMEM);
 655         }
 656
 657         /*
 658          * Create a dma tag for ioctl data buffers; size will be the maximum
 659          * possible I/O size (128kB).
 660          */
 661         if (bus_dma_tag_create(sc->parent_tag,          /* parent */
 662                                 sc->alignment,          /* alignment */
 663                                 0,                      /* boundary */
 664                                 BUS_SPACE_MAXADDR,      /* lowaddr */
 665                                 BUS_SPACE_MAXADDR,      /* highaddr */
 666                                 NULL, NULL,             /* filter, filterarg */
 667                                 TW_CL_MAX_IO_SIZE,      /* maxsize */
 668                                 max_sg_elements,        /* nsegments */
 669                                 TW_CL_MAX_IO_SIZE,      /* maxsegsize */
 670                                 BUS_DMA_ALLOCNOW,       /* flags */
 671                                 twa_busdma_lock,        /* lockfunc */
 672                                 sc->io_lock,            /* lockfuncarg */
 673                                 &sc->ioctl_tag          /* tag */)) {
 674                 tw_osli_printf(sc, "error = %d",
 675                         TW_CL_SEVERITY_ERROR_STRING,
 676                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 677                         0x2010,
 678                         "Can't allocate DMA tag for ioctl data buffers",
 679                         ENOMEM);
 680                 return(ENOMEM);
 681         }
 682
 683         /* Create just one map for all ioctl request data buffers. */
 684         if (bus_dmamap_create(sc->ioctl_tag, 0, &sc->ioctl_map)) {
 685                 tw_osli_printf(sc, "error = %d",
 686                         TW_CL_SEVERITY_ERROR_STRING,
 687                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 688                         0x2011,
 689                         "Can't create ioctl map",
 690                         ENOMEM);
 691                 return(ENOMEM);
 692         }
 693
 694
 695         /* Initialize request queues. */
 696         tw_osli_req_q_init(sc, TW_OSLI_FREE_Q);
 697         tw_osli_req_q_init(sc, TW_OSLI_BUSY_Q);
 698
 699         if ((sc->req_ctx_buf = (struct tw_osli_req_context *)
 700                         malloc((sizeof(struct tw_osli_req_context) *
 701                                 TW_OSLI_MAX_NUM_REQUESTS),
 702                                 TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) {
 703                 tw_osli_printf(sc, "error = %d",
 704                         TW_CL_SEVERITY_ERROR_STRING,
 705                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 706                         0x2012,
 707                         "Failed to allocate request packets",
 708                         ENOMEM);
 709                 return(ENOMEM);
 710         }
 711         bzero(sc->req_ctx_buf,
 712                 sizeof(struct tw_osli_req_context) * TW_OSLI_MAX_NUM_REQUESTS);
 713
 714         for (i = 0; i < TW_OSLI_MAX_NUM_REQUESTS; i++) {
 715                 req = &(sc->req_ctx_buf[i]);
 716                 req->ctlr = sc;
 717                 if (bus_dmamap_create(sc->dma_tag, 0, &req->dma_map)) {
 718                         tw_osli_printf(sc, "request # = %d, error = %d",
 719                                 TW_CL_SEVERITY_ERROR_STRING,
 720                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 721                                 0x2013,
 722                                 "Can't create dma map",
 723                                 i, ENOMEM);
 724                         return(ENOMEM);
 725                 }
 726
 727                 /* Initialize the ioctl wakeup/ timeout mutex */
 728                 req->ioctl_wake_timeout_lock = &(req->ioctl_wake_timeout_lock_handle);
 729                 mtx_init(req->ioctl_wake_timeout_lock, "tw_ioctl_wake_timeout_lock", NULL, MTX_DEF);
 730
 731                 /* Insert request into the free queue. */
 732                 tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
 733         }
 734
 735         return(0);
 736 }
 737
 738
 739
 740 /*
 741  * Function name:       tw_osli_free_resources
 742  * Description:         Performs clean-up at the time of going down.
 743  *
 744  * Input:               sc      -- ptr to OSL internal ctlr context
 745  * Output:              None
 746  * Return value:        None
 747  */
 748 static TW_VOID
 749 tw_osli_free_resources(struct twa_softc *sc)
 750 {
 751         struct tw_osli_req_context      *req;
 752         TW_INT32                        error = 0;
 753
 754         tw_osli_dbg_dprintf(3, sc, "entered");
 755
 756         /* Detach from CAM */
 757         tw_osli_cam_detach(sc);
 758
 759         if (sc->req_ctx_buf)
 760                 while ((req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q)) !=
 761                         NULL) {
 762                         mtx_destroy(req->ioctl_wake_timeout_lock);
 763
 764                         if ((error = bus_dmamap_destroy(sc->dma_tag,
 765                                         req->dma_map)))
 766                                 tw_osli_dbg_dprintf(1, sc,
 767                                         "dmamap_destroy(dma) returned %d",
 768                                         error);
 769                 }
 770
 771         if ((sc->ioctl_tag) && (sc->ioctl_map))
 772                 if ((error = bus_dmamap_destroy(sc->ioctl_tag, sc->ioctl_map)))
 773                         tw_osli_dbg_dprintf(1, sc,
 774                                 "dmamap_destroy(ioctl) returned %d", error);
 775
 776         /* Free all memory allocated so far. */
 777         if (sc->req_ctx_buf)
 778                 free(sc->req_ctx_buf, TW_OSLI_MALLOC_CLASS);
 779
 780         if (sc->non_dma_mem)
 781                 free(sc->non_dma_mem, TW_OSLI_MALLOC_CLASS);
 782
 783         if (sc->dma_mem) {
 784                 bus_dmamap_unload(sc->cmd_tag, sc->cmd_map);
 785                 bus_dmamem_free(sc->cmd_tag, sc->dma_mem,
 786                         sc->cmd_map);
 787         }
 788         if (sc->cmd_tag)
 789                 if ((error = bus_dma_tag_destroy(sc->cmd_tag)))
 790                         tw_osli_dbg_dprintf(1, sc,
 791                                 "dma_tag_destroy(cmd) returned %d", error);
 792
 793         if (sc->dma_tag)
 794                 if ((error = bus_dma_tag_destroy(sc->dma_tag)))
 795                         tw_osli_dbg_dprintf(1, sc,
 796                                 "dma_tag_destroy(dma) returned %d", error);
 797
 798         if (sc->ioctl_tag)
 799                 if ((error = bus_dma_tag_destroy(sc->ioctl_tag)))
 800                         tw_osli_dbg_dprintf(1, sc,
 801                                 "dma_tag_destroy(ioctl) returned %d", error);
 802
 803         if (sc->parent_tag)
 804                 if ((error = bus_dma_tag_destroy(sc->parent_tag)))
 805                         tw_osli_dbg_dprintf(1, sc,
 806                                 "dma_tag_destroy(parent) returned %d", error);
 807
 808
 809         /* Disconnect the interrupt handler. */
 810         if ((error = twa_teardown_intr(sc)))
 811                         tw_osli_dbg_dprintf(1, sc,
 812                                 "teardown_intr returned %d", error);
 813
 814         if (sc->irq_res != NULL)
 815                 if ((error = bus_release_resource(sc->bus_dev,
 816                                 SYS_RES_IRQ, sc->irq_res_id, sc->irq_res)))
 817                         tw_osli_dbg_dprintf(1, sc,
 818                                 "release_resource(irq) returned %d", error);
 819
 820
 821         /* Release the register window mapping. */
 822         if (sc->reg_res != NULL)
 823                 if ((error = bus_release_resource(sc->bus_dev,
 824                                 SYS_RES_MEMORY, sc->reg_res_id, sc->reg_res)))
 825                         tw_osli_dbg_dprintf(1, sc,
 826                                 "release_resource(io) returned %d", error);
 827
 828
 829         /* Destroy the control device. */
 830         if (sc->ctrl_dev != (struct cdev *)NULL)
 831                 destroy_dev(sc->ctrl_dev);
 832
 833         if ((error = sysctl_ctx_free(&sc->sysctl_ctxt)))
 834                 tw_osli_dbg_dprintf(1, sc,
 835                         "sysctl_ctx_free returned %d", error);
 836
 837 }
 838
 839
 840
 841 /*
 842  * Function name:       twa_detach
 843  * Description:         Called when the controller is being detached from
 844  *                      the pci bus.
 845  *
 846  * Input:               dev     -- bus device corresponding to the ctlr
 847  * Output:              None
 848  * Return value:        0       -- success
 849  *                      non-zero-- failure
 850  */
 851 static TW_INT32
 852 twa_detach(device_t dev)
 853 {
 854         struct twa_softc        *sc = device_get_softc(dev);
 855         TW_INT32                error;
 856
 857         tw_osli_dbg_dprintf(3, sc, "entered");
 858
 859         error = EBUSY;
 860         if (sc->open) {
 861                 tw_osli_printf(sc, "error = %d",
 862                         TW_CL_SEVERITY_ERROR_STRING,
 863                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 864                         0x2014,
 865                         "Device open",
 866                         error);
 867                 goto out;
 868         }
 869
 870         /* Shut the controller down. */
 871         if ((error = twa_shutdown(dev)))
 872                 goto out;
 873
 874         /* Free all resources associated with this controller. */
 875         tw_osli_free_resources(sc);
 876         error = 0;
 877
 878 out:
 879         return(error);
 880 }
 881
 882
 883
 884 /*
 885  * Function name:       twa_shutdown
 886  * Description:         Called at unload/shutdown time.  Lets the controller
 887  *                      know that we are going down.
 888  *
 889  * Input:               dev     -- bus device corresponding to the ctlr
 890  * Output:              None
 891  * Return value:        0       -- success
 892  *                      non-zero-- failure
 893  */
 894 static TW_INT32
 895 twa_shutdown(device_t dev)
 896 {
 897         struct twa_softc        *sc = device_get_softc(dev);
 898         TW_INT32                error = 0;
 899
 900         tw_osli_dbg_dprintf(3, sc, "entered");
 901
 902         /* Disconnect interrupts. */
 903         error = twa_teardown_intr(sc);
 904
 905         /* Stop watchdog task. */
 906         callout_drain(&(sc->watchdog_callout[0]));
 907         callout_drain(&(sc->watchdog_callout[1]));
 908
 909         /* Disconnect from the controller. */
 910         if ((error = tw_cl_shutdown_ctlr(&(sc->ctlr_handle), 0))) {
 911                 tw_osli_printf(sc, "error = %d",
 912                         TW_CL_SEVERITY_ERROR_STRING,
 913                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
 914                         0x2015,
 915                         "Failed to shutdown Common Layer/controller",
 916                         error);
 917         }
 918         return(error);
 919 }
 920
 921
 922
 923 /*
 924  * Function name:       twa_busdma_lock
 925  * Description:         Function to provide synchronization during busdma_swi.
 926  *
 927  * Input:               lock_arg -- lock mutex sent as argument
 928  *                      op -- operation (lock/unlock) expected of the function
 929  * Output:              None
 930  * Return value:        None
 931  */
 932 TW_VOID
 933 twa_busdma_lock(TW_VOID *lock_arg, bus_dma_lock_op_t op)
 934 {
 935         struct mtx      *lock;
 936
 937         lock = (struct mtx *)lock_arg;
 938         switch (op) {
 939         case BUS_DMA_LOCK:
 940                 mtx_lock_spin(lock);
 941                 break;
 942
 943         case BUS_DMA_UNLOCK:
 944                 mtx_unlock_spin(lock);
 945                 break;
 946
 947         default:
 948                 panic("Unknown operation 0x%x for twa_busdma_lock!", op);
 949         }
 950 }
 951
 952
 953 /*
 954  * Function name:       twa_pci_intr
 955  * Description:         Interrupt handler.  Wrapper for twa_interrupt.
 956  *
 957  * Input:               arg     -- ptr to OSL internal ctlr context
 958  * Output:              None
 959  * Return value:        None
 960  */
 961 static TW_VOID
 962 twa_pci_intr(TW_VOID *arg)
 963 {
 964         struct twa_softc        *sc = (struct twa_softc *)arg;
 965
 966         tw_osli_dbg_dprintf(10, sc, "entered");
 967         tw_cl_interrupt(&(sc->ctlr_handle));
 968 }
 969
 970
 971 /*
 972  * Function name:       tw_osli_fw_passthru
 973  * Description:         Builds a fw passthru cmd pkt, and submits it to CL.
 974  *
 975  * Input:               sc      -- ptr to OSL internal ctlr context
 976  *                      buf     -- ptr to ioctl pkt understood by CL
 977  * Output:              None
 978  * Return value:        0       -- success
 979  *                      non-zero-- failure
 980  */
 981 TW_INT32
 982 tw_osli_fw_passthru(struct twa_softc *sc, TW_INT8 *buf)
 983 {
 984         struct tw_osli_req_context              *req;
 985         struct tw_osli_ioctl_no_data_buf        *user_buf =
 986                 (struct tw_osli_ioctl_no_data_buf *)buf;
 987         TW_TIME                                 end_time;
 988         TW_UINT32                               timeout = 60;
 989         TW_UINT32                               data_buf_size_adjusted;
 990         struct tw_cl_req_packet                 *req_pkt;
 991         struct tw_cl_passthru_req_packet        *pt_req;
 992         TW_INT32                                error;
 993
 994         tw_osli_dbg_dprintf(5, sc, "ioctl: passthru");
 995
 996         if ((req = tw_osli_get_request(sc)) == NULL)
 997                 return(EBUSY);
 998
 999         req->req_handle.osl_req_ctxt = req;
1000         req->orig_req = buf;
1001         req->flags |= TW_OSLI_REQ_FLAGS_PASSTHRU;
1002
1003         req_pkt = &(req->req_pkt);
1004         req_pkt->status = 0;
1005         req_pkt->tw_osl_callback = tw_osl_complete_passthru;
1006         /* Let the Common Layer retry the request on cmd queue full. */
1007         req_pkt->flags |= TW_CL_REQ_RETRY_ON_BUSY;
1008
1009         pt_req = &(req_pkt->gen_req_pkt.pt_req);
1010         /*
1011          * Make sure that the data buffer sent to firmware is a
1012          * 512 byte multiple in size.
1013          */
1014         data_buf_size_adjusted =
1015                 (user_buf->driver_pkt.buffer_length +
1016                 (sc->sg_size_factor - 1)) & ~(sc->sg_size_factor - 1);
1017         if ((req->length = data_buf_size_adjusted)) {
1018                 if ((req->data = malloc(data_buf_size_adjusted,
1019                         TW_OSLI_MALLOC_CLASS, M_WAITOK)) == NULL) {
1020                         error = ENOMEM;
1021                         tw_osli_printf(sc, "error = %d",
1022                                 TW_CL_SEVERITY_ERROR_STRING,
1023                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1024                                 0x2016,
1025                                 "Could not alloc mem for "
1026                                 "fw_passthru data_buf",
1027                                 error);
1028                         goto fw_passthru_err;
1029                 }
1030                 /* Copy the payload. */
1031                 if ((error = copyin((TW_VOID *)(user_buf->pdata),
1032                         req->data,
1033                         user_buf->driver_pkt.buffer_length)) != 0) {
1034                         tw_osli_printf(sc, "error = %d",
1035                                 TW_CL_SEVERITY_ERROR_STRING,
1036                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1037                                 0x2017,
1038                                 "Could not copyin fw_passthru data_buf",
1039                                 error);
1040                         goto fw_passthru_err;
1041                 }
1042                 pt_req->sgl_entries = 1; /* will be updated during mapping */
1043                 req->flags |= (TW_OSLI_REQ_FLAGS_DATA_IN |
1044                         TW_OSLI_REQ_FLAGS_DATA_OUT);
1045         } else
1046                 pt_req->sgl_entries = 0; /* no payload */
1047
1048         pt_req->cmd_pkt = (TW_VOID *)(&(user_buf->cmd_pkt));
1049         pt_req->cmd_pkt_length = sizeof(struct tw_cl_command_packet);
1050
1051         if ((error = tw_osli_map_request(req)))
1052                 goto fw_passthru_err;
1053
1054         end_time = tw_osl_get_local_time() + timeout;
1055         while (req->state != TW_OSLI_REQ_STATE_COMPLETE) {
1056                 mtx_lock(req->ioctl_wake_timeout_lock);
1057                 req->flags |= TW_OSLI_REQ_FLAGS_SLEEPING;
1058
1059                 error = mtx_sleep(req, req->ioctl_wake_timeout_lock, 0,
1060                             "twa_passthru", timeout*hz);
1061                 mtx_unlock(req->ioctl_wake_timeout_lock);
1062
1063                 if (!(req->flags & TW_OSLI_REQ_FLAGS_SLEEPING))
1064                         error = 0;
1065                 req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING;
1066
1067                 if (! error) {
1068                         if (((error = req->error_code)) ||
1069                                 ((error = (req->state !=
1070                                 TW_OSLI_REQ_STATE_COMPLETE))) ||
1071                                 ((error = req_pkt->status)))
1072                                 goto fw_passthru_err;
1073                         break;
1074                 }
1075
1076                 if (req_pkt->status) {
1077                         error = req_pkt->status;
1078                         goto fw_passthru_err;
1079                 }
1080
1081                 if (error == EWOULDBLOCK) {
1082                         /* Time out! */
1083                         if ((!(req->error_code))                       &&
1084                             (req->state == TW_OSLI_REQ_STATE_COMPLETE) &&
1085                             (!(req_pkt->status))                          ) {
1086 #ifdef    TW_OSL_DEBUG
1087                                 tw_osli_printf(sc, "request = %p",
1088                                         TW_CL_SEVERITY_ERROR_STRING,
1089                                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1090                                         0x7777,
1091                                         "FALSE Passthru timeout!",
1092                                         req);
1093 #endif /* TW_OSL_DEBUG */
1094                                 error = 0; /* False error */
1095                                 break;
1096                         }
1097                         if (!(tw_cl_is_reset_needed(&(req->ctlr->ctlr_handle)))) {
1098 #ifdef    TW_OSL_DEBUG
1099                                 tw_osli_printf(sc, "request = %p",
1100                                         TW_CL_SEVERITY_ERROR_STRING,
1101                                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1102                                         0x2018,
1103                                         "Passthru request timed out!",
1104                                         req);
1105 #else  /* TW_OSL_DEBUG */
1106                         device_printf((sc)->bus_dev, "Passthru request timed out!\n");
1107 #endif /* TW_OSL_DEBUG */
1108                                 tw_cl_reset_ctlr(&(req->ctlr->ctlr_handle));
1109                         }
1110
1111                         error = 0;
1112                         end_time = tw_osl_get_local_time() + timeout;
1113                         continue;
1114                         /*
1115                          * Don't touch req after a reset.  It (and any
1116                          * associated data) will be
1117                          * unmapped by the callback.
1118                          */
1119                 }
1120                 /*
1121                  * Either the request got completed, or we were woken up by a
1122                  * signal.  Calculate the new timeout, in case it was the latter.
1123                  */
1124                 timeout = (end_time - tw_osl_get_local_time());
1125         } /* End of while loop */
1126
1127         /* If there was a payload, copy it back. */
1128         if ((!error) && (req->length))
1129                 if ((error = copyout(req->data, user_buf->pdata,
1130                         user_buf->driver_pkt.buffer_length)))
1131                         tw_osli_printf(sc, "error = %d",
1132                                 TW_CL_SEVERITY_ERROR_STRING,
1133                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1134                                 0x2019,
1135                                 "Could not copyout fw_passthru data_buf",
1136                                 error);
1137
1138 fw_passthru_err:
1139
1140         if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET)
1141                 error = EBUSY;
1142
1143         user_buf->driver_pkt.os_status = error;
1144         /* Free resources. */
1145         if (req->data)
1146                 free(req->data, TW_OSLI_MALLOC_CLASS);
1147         tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
1148         return(error);
1149 }
1150
1151
1152
1153 /*
1154  * Function name:       tw_osl_complete_passthru
1155  * Description:         Called to complete passthru requests.
1156  *
1157  * Input:               req_handle      -- ptr to request handle
1158  * Output:              None
1159  * Return value:        None
1160  */
1161 TW_VOID
1162 tw_osl_complete_passthru(struct tw_cl_req_handle *req_handle)
1163 {
1164         struct tw_osli_req_context      *req = req_handle->osl_req_ctxt;
1165         struct tw_cl_req_packet         *req_pkt =
1166                 (struct tw_cl_req_packet *)(&req->req_pkt);
1167         struct twa_softc                *sc = req->ctlr;
1168
1169         tw_osli_dbg_dprintf(5, sc, "entered");
1170
1171         if (req->state != TW_OSLI_REQ_STATE_BUSY) {
1172                 tw_osli_printf(sc, "request = %p, status = %d",
1173                         TW_CL_SEVERITY_ERROR_STRING,
1174                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1175                         0x201B,
1176                         "Unposted command completed!!",
1177                         req, req->state);
1178         }
1179
1180         /*
1181          * Remove request from the busy queue.  Just mark it complete.
1182          * There's no need to move it into the complete queue as we are
1183          * going to be done with it right now.
1184          */
1185         req->state = TW_OSLI_REQ_STATE_COMPLETE;
1186         tw_osli_req_q_remove_item(req, TW_OSLI_BUSY_Q);
1187
1188         tw_osli_unmap_request(req);
1189
1190         /*
1191          * Don't do a wake up if there was an error even before the request
1192          * was sent down to the Common Layer, and we hadn't gotten an
1193          * EINPROGRESS.  The request originator will then be returned an
1194          * error, and he can do the clean-up.
1195          */
1196         if ((req->error_code) && (!(req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS)))
1197                 return;
1198
1199         if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) {
1200                 if (req->flags & TW_OSLI_REQ_FLAGS_SLEEPING) {
1201                         /* Wake up the sleeping command originator. */
1202                         tw_osli_dbg_dprintf(5, sc,
1203                                 "Waking up originator of request %p", req);
1204                         req->flags &= ~TW_OSLI_REQ_FLAGS_SLEEPING;
1205                         wakeup_one(req);
1206                 } else {
1207                         /*
1208                          * If the request completed even before mtx_sleep
1209                          * was called, simply return.
1210                          */
1211                         if (req->flags & TW_OSLI_REQ_FLAGS_MAPPED)
1212                                 return;
1213
1214                         if (req_pkt->status == TW_CL_ERR_REQ_BUS_RESET)
1215                                 return;
1216
1217                         tw_osli_printf(sc, "request = %p",
1218                                 TW_CL_SEVERITY_ERROR_STRING,
1219                                 TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1220                                 0x201C,
1221                                 "Passthru callback called, "
1222                                 "and caller not sleeping",
1223                                 req);
1224                 }
1225         } else {
1226                 tw_osli_printf(sc, "request = %p",
1227                         TW_CL_SEVERITY_ERROR_STRING,
1228                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1229                         0x201D,
1230                         "Passthru callback called for non-passthru request",
1231                         req);
1232         }
1233 }
1234
1235
1236
1237 /*
1238  * Function name:       tw_osli_get_request
1239  * Description:         Gets a request pkt from the free queue.
1240  *
1241  * Input:               sc      -- ptr to OSL internal ctlr context
1242  * Output:              None
1243  * Return value:        ptr to request pkt      -- success
1244  *                      NULL                    -- failure
1245  */
1246 struct tw_osli_req_context *
1247 tw_osli_get_request(struct twa_softc *sc)
1248 {
1249         struct tw_osli_req_context      *req;
1250
1251         tw_osli_dbg_dprintf(4, sc, "entered");
1252
1253         /* Get a free request packet. */
1254         req = tw_osli_req_q_remove_head(sc, TW_OSLI_FREE_Q);
1255
1256         /* Initialize some fields to their defaults. */
1257         if (req) {
1258                 req->req_handle.osl_req_ctxt = NULL;
1259                 req->req_handle.cl_req_ctxt = NULL;
1260                 req->req_handle.is_io = 0;
1261                 req->data = NULL;
1262                 req->length = 0;
1263                 req->deadline = 0;
1264                 req->real_data = NULL;
1265                 req->real_length = 0;
1266                 req->state = TW_OSLI_REQ_STATE_INIT;/* req being initialized */
1267                 req->flags = 0;
1268                 req->error_code = 0;
1269                 req->orig_req = NULL;
1270
1271                 bzero(&(req->req_pkt), sizeof(struct tw_cl_req_packet));
1272
1273         }
1274         return(req);
1275 }
1276
1277
1278
1279 /*
1280  * Function name:       twa_map_load_data_callback
1281  * Description:         Callback of bus_dmamap_load for the buffer associated
1282  *                      with data.  Updates the cmd pkt (size/sgl_entries
1283  *                      fields, as applicable) to reflect the number of sg
1284  *                      elements.
1285  *
1286  * Input:               arg     -- ptr to OSL internal request context
1287  *                      segs    -- ptr to a list of segment descriptors
1288  *                      nsegments--# of segments
1289  *                      error   -- 0 if no errors encountered before callback,
1290  *                                 non-zero if errors were encountered
1291  * Output:              None
1292  * Return value:        None
1293  */
1294 static TW_VOID
1295 twa_map_load_data_callback(TW_VOID *arg, bus_dma_segment_t *segs,
1296         TW_INT32 nsegments, TW_INT32 error)
1297 {
1298         struct tw_osli_req_context      *req =
1299                 (struct tw_osli_req_context *)arg;
1300         struct twa_softc                *sc = req->ctlr;
1301         struct tw_cl_req_packet         *req_pkt = &(req->req_pkt);
1302
1303         tw_osli_dbg_dprintf(10, sc, "entered");
1304
1305         if (error == EINVAL) {
1306                 req->error_code = error;
1307                 return;
1308         }
1309
1310         /* Mark the request as currently being processed. */
1311         req->state = TW_OSLI_REQ_STATE_BUSY;
1312         /* Move the request into the busy queue. */
1313         tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q);
1314
1315         req->flags |= TW_OSLI_REQ_FLAGS_MAPPED;
1316
1317         if (error == EFBIG) {
1318                 req->error_code = error;
1319                 goto out;
1320         }
1321
1322         if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) {
1323                 struct tw_cl_passthru_req_packet        *pt_req;
1324
1325                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN)
1326                         bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map,
1327                                 BUS_DMASYNC_PREREAD);
1328
1329                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) {
1330                         /*
1331                          * If we're using an alignment buffer, and we're
1332                          * writing data, copy the real data out.
1333                          */
1334                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED)
1335                                 bcopy(req->real_data, req->data, req->real_length);
1336                         bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map,
1337                                 BUS_DMASYNC_PREWRITE);
1338                 }
1339
1340                 pt_req = &(req_pkt->gen_req_pkt.pt_req);
1341                 pt_req->sg_list = (TW_UINT8 *)segs;
1342                 pt_req->sgl_entries += (nsegments - 1);
1343                 error = tw_cl_fw_passthru(&(sc->ctlr_handle), req_pkt,
1344                         &(req->req_handle));
1345         } else {
1346                 struct tw_cl_scsi_req_packet    *scsi_req;
1347
1348                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN)
1349                         bus_dmamap_sync(sc->dma_tag, req->dma_map,
1350                                 BUS_DMASYNC_PREREAD);
1351
1352                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT) {
1353                         /*
1354                          * If we're using an alignment buffer, and we're
1355                          * writing data, copy the real data out.
1356                          */
1357                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED)
1358                                 bcopy(req->real_data, req->data, req->real_length);
1359                         bus_dmamap_sync(sc->dma_tag, req->dma_map,
1360                                 BUS_DMASYNC_PREWRITE);
1361                 }
1362
1363                 scsi_req = &(req_pkt->gen_req_pkt.scsi_req);
1364                 scsi_req->sg_list = (TW_UINT8 *)segs;
1365                 scsi_req->sgl_entries += (nsegments - 1);
1366                 error = tw_cl_start_io(&(sc->ctlr_handle), req_pkt,
1367                         &(req->req_handle));
1368         }
1369
1370 out:
1371         if (error) {
1372                 req->error_code = error;
1373                 req_pkt->tw_osl_callback(&(req->req_handle));
1374                 /*
1375                  * If the caller had been returned EINPROGRESS, and he has
1376                  * registered a callback for handling completion, the callback
1377                  * will never get called because we were unable to submit the
1378                  * request.  So, free up the request right here.
1379                  */
1380                 if (req->flags & TW_OSLI_REQ_FLAGS_IN_PROGRESS)
1381                         tw_osli_req_q_insert_tail(req, TW_OSLI_FREE_Q);
1382         }
1383 }
1384
1385
1386
1387 /*
1388  * Function name:       twa_map_load_callback
1389  * Description:         Callback of bus_dmamap_load for the buffer associated
1390  *                      with a cmd pkt.
1391  *
1392  * Input:               arg     -- ptr to variable to hold phys addr
1393  *                      segs    -- ptr to a list of segment descriptors
1394  *                      nsegments--# of segments
1395  *                      error   -- 0 if no errors encountered before callback,
1396  *                                 non-zero if errors were encountered
1397  * Output:              None
1398  * Return value:        None
1399  */
1400 static TW_VOID
1401 twa_map_load_callback(TW_VOID *arg, bus_dma_segment_t *segs,
1402         TW_INT32 nsegments, TW_INT32 error)
1403 {
1404         *((bus_addr_t *)arg) = segs[0].ds_addr;
1405 }
1406
1407
1408
1409 /*
1410  * Function name:       tw_osli_map_request
1411  * Description:         Maps a cmd pkt and data associated with it, into
1412  *                      DMA'able memory.
1413  *
1414  * Input:               req     -- ptr to request pkt
1415  * Output:              None
1416  * Return value:        0       -- success
1417  *                      non-zero-- failure
1418  */
1419 TW_INT32
1420 tw_osli_map_request(struct tw_osli_req_context *req)
1421 {
1422         struct twa_softc        *sc = req->ctlr;
1423         TW_INT32                error = 0;
1424
1425         tw_osli_dbg_dprintf(10, sc, "entered");
1426
1427         /* If the command involves data, map that too. */
1428         if (req->data != NULL) {
1429                 /*
1430                  * It's sufficient for the data pointer to be 4-byte aligned
1431                  * to work with 9000.  However, if 4-byte aligned addresses
1432                  * are passed to bus_dmamap_load, we can get back sg elements
1433                  * that are not 512-byte multiples in size.  So, we will let
1434                  * only those buffers that are 512-byte aligned to pass
1435                  * through, and bounce the rest, so as to make sure that we
1436                  * always get back sg elements that are 512-byte multiples
1437                  * in size.
1438                  */
1439                 if (((vm_offset_t)req->data % sc->sg_size_factor) ||
1440                         (req->length % sc->sg_size_factor)) {
1441                         req->flags |= TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED;
1442                         /* Save original data pointer and length. */
1443                         req->real_data = req->data;
1444                         req->real_length = req->length;
1445                         req->length = (req->length +
1446                                 (sc->sg_size_factor - 1)) &
1447                                 ~(sc->sg_size_factor - 1);
1448                         req->data = malloc(req->length, TW_OSLI_MALLOC_CLASS,
1449                                         M_NOWAIT);
1450                         if (req->data == NULL) {
1451                                 tw_osli_printf(sc, "error = %d",
1452                                         TW_CL_SEVERITY_ERROR_STRING,
1453                                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1454                                         0x201E,
1455                                         "Failed to allocate memory "
1456                                         "for bounce buffer",
1457                                         ENOMEM);
1458                                 /* Restore original data pointer and length. */
1459                                 req->data = req->real_data;
1460                                 req->length = req->real_length;
1461                                 return(ENOMEM);
1462                         }
1463                 }
1464
1465                 /*
1466                  * Map the data buffer into bus space and build the SG list.
1467                  */
1468                 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) {
1469                         /* Lock against multiple simultaneous ioctl calls. */
1470                         mtx_lock_spin(sc->io_lock);
1471                         error = bus_dmamap_load(sc->ioctl_tag, sc->ioctl_map,
1472                                 req->data, req->length,
1473                                 twa_map_load_data_callback, req,
1474                                 BUS_DMA_WAITOK);
1475                         mtx_unlock_spin(sc->io_lock);
1476                 } else if (req->flags & TW_OSLI_REQ_FLAGS_CCB) {
1477                         error = bus_dmamap_load_ccb(sc->dma_tag, req->dma_map,
1478                                 req->orig_req, twa_map_load_data_callback, req,
1479                                 BUS_DMA_WAITOK);
1480                 } else {
1481                         /*
1482                          * There's only one CAM I/O thread running at a time.
1483                          * So, there's no need to hold the io_lock.
1484                          */
1485                         error = bus_dmamap_load(sc->dma_tag, req->dma_map,
1486                                 req->data, req->length,
1487                                 twa_map_load_data_callback, req,
1488                                 BUS_DMA_WAITOK);
1489                 }
1490
1491                 if (!error)
1492                         error = req->error_code;
1493                 else {
1494                         if (error == EINPROGRESS) {
1495                                 /*
1496                                  * Specifying sc->io_lock as the lockfuncarg
1497                                  * in ...tag_create should protect the access
1498                                  * of ...FLAGS_MAPPED from the callback.
1499                                  */
1500                                 mtx_lock_spin(sc->io_lock);
1501                                 if (!(req->flags & TW_OSLI_REQ_FLAGS_MAPPED))
1502                                         req->flags |= TW_OSLI_REQ_FLAGS_IN_PROGRESS;
1503                                 tw_osli_disallow_new_requests(sc, &(req->req_handle));
1504                                 mtx_unlock_spin(sc->io_lock);
1505                                 error = 0;
1506                         } else {
1507                                 tw_osli_printf(sc, "error = %d",
1508                                         TW_CL_SEVERITY_ERROR_STRING,
1509                                         TW_CL_MESSAGE_SOURCE_FREEBSD_DRIVER,
1510                                         0x9999,
1511                                         "Failed to map DMA memory "
1512                                         "for I/O request",
1513                                         error);
1514                                 req->flags |= TW_OSLI_REQ_FLAGS_FAILED;
1515                                 /* Free alignment buffer if it was used. */
1516                                 if (req->flags &
1517                                         TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) {
1518                                         free(req->data, TW_OSLI_MALLOC_CLASS);
1519                                         /*
1520                                          * Restore original data pointer
1521                                          * and length.
1522                                          */
1523                                         req->data = req->real_data;
1524                                         req->length = req->real_length;
1525                                 }
1526                         }
1527                 }
1528
1529         } else {
1530                 /* Mark the request as currently being processed. */
1531                 req->state = TW_OSLI_REQ_STATE_BUSY;
1532                 /* Move the request into the busy queue. */
1533                 tw_osli_req_q_insert_tail(req, TW_OSLI_BUSY_Q);
1534                 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU)
1535                         error = tw_cl_fw_passthru(&sc->ctlr_handle,
1536                                         &(req->req_pkt), &(req->req_handle));
1537                 else
1538                         error = tw_cl_start_io(&sc->ctlr_handle,
1539                                         &(req->req_pkt), &(req->req_handle));
1540                 if (error) {
1541                         req->error_code = error;
1542                         req->req_pkt.tw_osl_callback(&(req->req_handle));
1543                 }
1544         }
1545         return(error);
1546 }
1547
1548
1549
1550 /*
1551  * Function name:       tw_osli_unmap_request
1552  * Description:         Undoes the mapping done by tw_osli_map_request.
1553  *
1554  * Input:               req     -- ptr to request pkt
1555  * Output:              None
1556  * Return value:        None
1557  */
1558 TW_VOID
1559 tw_osli_unmap_request(struct tw_osli_req_context *req)
1560 {
1561         struct twa_softc        *sc = req->ctlr;
1562
1563         tw_osli_dbg_dprintf(10, sc, "entered");
1564
1565         /* If the command involved data, unmap that too. */
1566         if (req->data != NULL) {
1567                 if (req->flags & TW_OSLI_REQ_FLAGS_PASSTHRU) {
1568                         /* Lock against multiple simultaneous ioctl calls. */
1569                         mtx_lock_spin(sc->io_lock);
1570
1571                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) {
1572                                 bus_dmamap_sync(sc->ioctl_tag,
1573                                         sc->ioctl_map, BUS_DMASYNC_POSTREAD);
1574
1575                                 /*
1576                                  * If we are using a bounce buffer, and we are
1577                                  * reading data, copy the real data in.
1578                                  */
1579                                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED)
1580                                         bcopy(req->data, req->real_data,
1581                                                 req->real_length);
1582                         }
1583
1584                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT)
1585                                 bus_dmamap_sync(sc->ioctl_tag, sc->ioctl_map,
1586                                         BUS_DMASYNC_POSTWRITE);
1587
1588                         bus_dmamap_unload(sc->ioctl_tag, sc->ioctl_map);
1589
1590                         mtx_unlock_spin(sc->io_lock);
1591                 } else {
1592                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_IN) {
1593                                 bus_dmamap_sync(sc->dma_tag,
1594                                         req->dma_map, BUS_DMASYNC_POSTREAD);
1595
1596                                 /*
1597                                  * If we are using a bounce buffer, and we are
1598                                  * reading data, copy the real data in.
1599                                  */
1600                                 if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED)
1601                                         bcopy(req->data, req->real_data,
1602                                                 req->real_length);
1603                         }
1604                         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_OUT)
1605                                 bus_dmamap_sync(sc->dma_tag, req->dma_map,
1606                                         BUS_DMASYNC_POSTWRITE);
1607
1608                         bus_dmamap_unload(sc->dma_tag, req->dma_map);
1609                 }
1610         }
1611
1612         /* Free alignment buffer if it was used. */
1613         if (req->flags & TW_OSLI_REQ_FLAGS_DATA_COPY_NEEDED) {
1614                 free(req->data, TW_OSLI_MALLOC_CLASS);
1615                 /* Restore original data pointer and length. */
1616                 req->data = req->real_data;
1617                 req->length = req->real_length;
1618         }
1619 }
1620
1621
1622
1623 #ifdef TW_OSL_DEBUG
1624
1625 TW_VOID twa_report_stats(TW_VOID);
1626 TW_VOID twa_reset_stats(TW_VOID);
1627 TW_VOID tw_osli_print_ctlr_stats(struct twa_softc *sc);
1628 TW_VOID twa_print_req_info(struct tw_osli_req_context *req);
1629
1630
1631 /*
1632  * Function name:       twa_report_stats
1633  * Description:         For being called from ddb.  Calls functions that print
1634  *                      OSL and CL internal stats for the controller.
1635  *
1636  * Input:               None
1637  * Output:              None
1638  * Return value:        None
1639  */
1640 TW_VOID
1641 twa_report_stats(TW_VOID)
1642 {
1643         struct twa_softc        *sc;
1644         TW_INT32                i;
1645
1646         for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) {
1647                 tw_osli_print_ctlr_stats(sc);
1648                 tw_cl_print_ctlr_stats(&sc->ctlr_handle);
1649         }
1650 }
1651
1652
1653
1654 /*
1655  * Function name:       tw_osli_print_ctlr_stats
1656  * Description:         For being called from ddb.  Prints OSL controller stats
1657  *
1658  * Input:               sc      -- ptr to OSL internal controller context
1659  * Output:              None
1660  * Return value:        None
1661  */
1662 TW_VOID
1663 tw_osli_print_ctlr_stats(struct twa_softc *sc)
1664 {
1665         twa_printf(sc, "osl_ctlr_ctxt = %p\n", sc);
1666         twa_printf(sc, "OSLq type  current  max\n");
1667         twa_printf(sc, "free      %04d     %04d\n",
1668                 sc->q_stats[TW_OSLI_FREE_Q].cur_len,
1669                 sc->q_stats[TW_OSLI_FREE_Q].max_len);
1670         twa_printf(sc, "busy      %04d     %04d\n",
1671                 sc->q_stats[TW_OSLI_BUSY_Q].cur_len,
1672                 sc->q_stats[TW_OSLI_BUSY_Q].max_len);
1673 }
1674
1675
1676
1677 /*
1678  * Function name:       twa_print_req_info
1679  * Description:         For being called from ddb.  Calls functions that print
1680  *                      OSL and CL internal details for the request.
1681  *
1682  * Input:               req     -- ptr to OSL internal request context
1683  * Output:              None
1684  * Return value:        None
1685  */
1686 TW_VOID
1687 twa_print_req_info(struct tw_osli_req_context *req)
1688 {
1689         struct twa_softc        *sc = req->ctlr;
1690
1691         twa_printf(sc, "OSL details for request:\n");
1692         twa_printf(sc, "osl_req_ctxt = %p, cl_req_ctxt = %p\n"
1693                 "data = %p, length = 0x%x, real_data = %p, real_length = 0x%x\n"
1694                 "state = 0x%x, flags = 0x%x, error = 0x%x, orig_req = %p\n"
1695                 "next_req = %p, prev_req = %p, dma_map = %p\n",
1696                 req->req_handle.osl_req_ctxt, req->req_handle.cl_req_ctxt,
1697                 req->data, req->length, req->real_data, req->real_length,
1698                 req->state, req->flags, req->error_code, req->orig_req,
1699                 req->link.next, req->link.prev, req->dma_map);
1700         tw_cl_print_req_info(&(req->req_handle));
1701 }
1702
1703
1704
1705 /*
1706  * Function name:       twa_reset_stats
1707  * Description:         For being called from ddb.
1708  *                      Resets some OSL controller stats.
1709  *
1710  * Input:               None
1711  * Output:              None
1712  * Return value:        None
1713  */
1714 TW_VOID
1715 twa_reset_stats(TW_VOID)
1716 {
1717         struct twa_softc        *sc;
1718         TW_INT32                i;
1719
1720         for (i = 0; (sc = devclass_get_softc(twa_devclass, i)) != NULL; i++) {
1721                 sc->q_stats[TW_OSLI_FREE_Q].max_len = 0;
1722                 sc->q_stats[TW_OSLI_BUSY_Q].max_len = 0;
1723                 tw_cl_reset_stats(&sc->ctlr_handle);
1724         }
1725 }
1726
1727 #endif /* TW_OSL_DEBUG */