drivers/staging/wlan-ng/hfa384x_usb.c

   1 /* src/prism2/driver/hfa384x_usb.c
   2 *
   3 * Functions that talk to the USB variantof the Intersil hfa384x MAC
   4 *
   5 * Copyright (C) 1999 AbsoluteValue Systems, Inc.  All Rights Reserved.
   6 * --------------------------------------------------------------------
   7 *
   8 * linux-wlan
   9 *
  10 *   The contents of this file are subject to the Mozilla Public
  11 *   License Version 1.1 (the "License"); you may not use this file
  12 *   except in compliance with the License. You may obtain a copy of
  13 *   the License at http://www.mozilla.org/MPL/
  14 *
  15 *   Software distributed under the License is distributed on an "AS
  16 *   IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  17 *   implied. See the License for the specific language governing
  18 *   rights and limitations under the License.
  19 *
  20 *   Alternatively, the contents of this file may be used under the
  21 *   terms of the GNU Public License version 2 (the "GPL"), in which
  22 *   case the provisions of the GPL are applicable instead of the
  23 *   above.  If you wish to allow the use of your version of this file
  24 *   only under the terms of the GPL and not to allow others to use
  25 *   your version of this file under the MPL, indicate your decision
  26 *   by deleting the provisions above and replace them with the notice
  27 *   and other provisions required by the GPL.  If you do not delete
  28 *   the provisions above, a recipient may use your version of this
  29 *   file under either the MPL or the GPL.
  30 *
  31 * --------------------------------------------------------------------
  32 *
  33 * Inquiries regarding the linux-wlan Open Source project can be
  34 * made directly to:
  35 *
  36 * AbsoluteValue Systems Inc.
  37 * info@linux-wlan.com
  38 * http://www.linux-wlan.com
  39 *
  40 * --------------------------------------------------------------------
  41 *
  42 * Portions of the development of this software were funded by
  43 * Intersil Corporation as part of PRISM(R) chipset product development.
  44 *
  45 * --------------------------------------------------------------------
  46 *
  47 * This file implements functions that correspond to the prism2/hfa384x
  48 * 802.11 MAC hardware and firmware host interface.
  49 *
  50 * The functions can be considered to represent several levels of
  51 * abstraction.  The lowest level functions are simply C-callable wrappers
  52 * around the register accesses.  The next higher level represents C-callable
  53 * prism2 API functions that match the Intersil documentation as closely
  54 * as is reasonable.  The next higher layer implements common sequences
  55 * of invokations of the API layer (e.g. write to bap, followed by cmd).
  56 *
  57 * Common sequences:
  58 * hfa384x_drvr_xxx      Highest level abstractions provided by the
  59 *                       hfa384x code.  They are driver defined wrappers
  60 *                       for common sequences.  These functions generally
  61 *                       use the services of the lower levels.
  62 *
  63 * hfa384x_drvr_xxxconfig  An example of the drvr level abstraction. These
  64 *                       functions are wrappers for the RID get/set
  65 *                       sequence. They  call copy_[to|from]_bap() and
  66 *                       cmd_access().   These functions operate on the
  67 *                       RIDs and buffers without validation.  The caller
  68 *                       is responsible for that.
  69 *
  70 * API wrapper functions:
  71 * hfa384x_cmd_xxx       functions that provide access to the f/w commands.
  72 *                       The function arguments correspond to each command
  73 *                       argument, even command arguments that get packed
  74 *                       into single registers.  These functions _just_
  75 *                       issue the command by setting the cmd/parm regs
  76 *                       & reading the status/resp regs.  Additional
  77 *                       activities required to fully use a command
  78 *                       (read/write from/to bap, get/set int status etc.)
  79 *                       are implemented separately.  Think of these as
  80 *                       C-callable prism2 commands.
  81 *
  82 * Lowest Layer Functions:
  83 * hfa384x_docmd_xxx     These functions implement the sequence required
  84 *                       to issue any prism2 command.  Primarily used by the
  85 *                       hfa384x_cmd_xxx functions.
  86 *
  87 * hfa384x_bap_xxx       BAP read/write access functions.
  88 *                       Note: we usually use BAP0 for non-interrupt context
  89 *                        and BAP1 for interrupt context.
  90 *
  91 * hfa384x_dl_xxx        download related functions.
  92 *
  93 * Driver State Issues:
  94 * Note that there are two pairs of functions that manage the
  95 * 'initialized' and 'running' states of the hw/MAC combo.  The four
  96 * functions are create(), destroy(), start(), and stop().  create()
  97 * sets up the data structures required to support the hfa384x_*
  98 * functions and destroy() cleans them up.  The start() function gets
  99 * the actual hardware running and enables the interrupts.  The stop()
 100 * function shuts the hardware down.  The sequence should be:
 101 * create()
 102 * start()
 103 *  .
 104 *  .  Do interesting things w/ the hardware
 105 *  .
 106 * stop()
 107 * destroy()
 108 *
 109 * Note that destroy() can be called without calling stop() first.
 110 * --------------------------------------------------------------------
 111 */
 112
 113 #include <linux/version.h>
 114
 115 #include <linux/module.h>
 116 #include <linux/kernel.h>
 117 #include <linux/sched.h>
 118 #include <linux/types.h>
 119 #include <linux/slab.h>
 120 #include <linux/wireless.h>
 121 #include <linux/netdevice.h>
 122 #include <linux/timer.h>
 123 #include <asm/io.h>
 124 #include <linux/delay.h>
 125 #include <asm/byteorder.h>
 126 #include <asm/bitops.h>
 127 #include <linux/list.h>
 128 #include <linux/usb.h>
 129 #include <linux/byteorder/generic.h>
 130
 131 #define SUBMIT_URB(u,f)  usb_submit_urb(u,f)
 132
 133 /*================================================================*/
 134 /* Project Includes */
 135
 136 #include "p80211types.h"
 137 #include "p80211hdr.h"
 138 #include "p80211mgmt.h"
 139 #include "p80211conv.h"
 140 #include "p80211msg.h"
 141 #include "p80211netdev.h"
 142 #include "p80211req.h"
 143 #include "p80211metadef.h"
 144 #include "p80211metastruct.h"
 145 #include "hfa384x.h"
 146 #include "prism2mgmt.h"
 147
 148 enum cmd_mode {
 149         DOWAIT = 0,
 150         DOASYNC
 151 };
 152 typedef enum cmd_mode CMD_MODE;
 153
 154 #define THROTTLE_JIFFIES        (HZ/8)
 155 #define URB_ASYNC_UNLINK 0
 156 #define USB_QUEUE_BULK 0
 157
 158 #define ROUNDUP64(a) (((a)+63)&~63)
 159
 160 #ifdef DEBUG_USB
 161 static void dbprint_urb(struct urb *urb);
 162 #endif
 163
 164 static void
 165 hfa384x_int_rxmonitor(wlandevice_t *wlandev, hfa384x_usb_rxfrm_t *rxfrm);
 166
 167 static void hfa384x_usb_defer(struct work_struct *data);
 168
 169 static int submit_rx_urb(hfa384x_t *hw, gfp_t flags);
 170
 171 static int submit_tx_urb(hfa384x_t *hw, struct urb *tx_urb, gfp_t flags);
 172
 173 /*---------------------------------------------------*/
 174 /* Callbacks */
 175 static void hfa384x_usbout_callback(struct urb *urb);
 176 static void hfa384x_ctlxout_callback(struct urb *urb);
 177 static void hfa384x_usbin_callback(struct urb *urb);
 178
 179 static void
 180 hfa384x_usbin_txcompl(wlandevice_t *wlandev, hfa384x_usbin_t *usbin);
 181
 182 static void hfa384x_usbin_rx(wlandevice_t *wlandev, struct sk_buff *skb);
 183
 184 static void hfa384x_usbin_info(wlandevice_t *wlandev, hfa384x_usbin_t *usbin);
 185
 186 static void
 187 hfa384x_usbout_tx(wlandevice_t *wlandev, hfa384x_usbout_t *usbout);
 188
 189 static void hfa384x_usbin_ctlx(hfa384x_t *hw, hfa384x_usbin_t *usbin,
 190                                int urb_status);
 191
 192 /*---------------------------------------------------*/
 193 /* Functions to support the prism2 usb command queue */
 194
 195 static void hfa384x_usbctlxq_run(hfa384x_t *hw);
 196
 197 static void hfa384x_usbctlx_reqtimerfn(unsigned long data);
 198
 199 static void hfa384x_usbctlx_resptimerfn(unsigned long data);
 200
 201 static void hfa384x_usb_throttlefn(unsigned long data);
 202
 203 static void hfa384x_usbctlx_completion_task(unsigned long data);
 204
 205 static void hfa384x_usbctlx_reaper_task(unsigned long data);
 206
 207 static int hfa384x_usbctlx_submit(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx);
 208
 209 static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx);
 210
 211 struct usbctlx_completor {
 212         int (*complete) (struct usbctlx_completor *);
 213 };
 214 typedef struct usbctlx_completor usbctlx_completor_t;
 215
 216 static int
 217 hfa384x_usbctlx_complete_sync(hfa384x_t *hw,
 218                               hfa384x_usbctlx_t *ctlx,
 219                               usbctlx_completor_t *completor);
 220
 221 static int
 222 unlocked_usbctlx_cancel_async(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx);
 223
 224 static void hfa384x_cb_status(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx);
 225
 226 static void hfa384x_cb_rrid(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx);
 227
 228 static int
 229 usbctlx_get_status(const hfa384x_usb_cmdresp_t *cmdresp,
 230                    hfa384x_cmdresult_t *result);
 231
 232 static void
 233 usbctlx_get_rridresult(const hfa384x_usb_rridresp_t *rridresp,
 234                        hfa384x_rridresult_t *result);
 235
 236 /*---------------------------------------------------*/
 237 /* Low level req/resp CTLX formatters and submitters */
 238 static int
 239 hfa384x_docmd(hfa384x_t *hw,
 240               CMD_MODE mode,
 241               hfa384x_metacmd_t *cmd,
 242               ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data);
 243
 244 static int
 245 hfa384x_dorrid(hfa384x_t *hw,
 246                CMD_MODE mode,
 247                u16 rid,
 248                void *riddata,
 249                unsigned int riddatalen,
 250                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data);
 251
 252 static int
 253 hfa384x_dowrid(hfa384x_t *hw,
 254                CMD_MODE mode,
 255                u16 rid,
 256                void *riddata,
 257                unsigned int riddatalen,
 258                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data);
 259
 260 static int
 261 hfa384x_dormem(hfa384x_t *hw,
 262                CMD_MODE mode,
 263                u16 page,
 264                u16 offset,
 265                void *data,
 266                unsigned int len,
 267                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data);
 268
 269 static int
 270 hfa384x_dowmem(hfa384x_t *hw,
 271                CMD_MODE mode,
 272                u16 page,
 273                u16 offset,
 274                void *data,
 275                unsigned int len,
 276                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data);
 277
 278 static int hfa384x_isgood_pdrcode(u16 pdrcode);
 279
 280 static inline const char *ctlxstr(CTLX_STATE s)
 281 {
 282         static const char *ctlx_str[] = {
 283                 "Initial state",
 284                 "Complete",
 285                 "Request failed",
 286                 "Request pending",
 287                 "Request packet submitted",
 288                 "Request packet completed",
 289                 "Response packet completed"
 290         };
 291
 292         return ctlx_str[s];
 293 };
 294
 295 static inline hfa384x_usbctlx_t *get_active_ctlx(hfa384x_t *hw)
 296 {
 297         return list_entry(hw->ctlxq.active.next, hfa384x_usbctlx_t, list);
 298 }
 299
 300 #ifdef DEBUG_USB
 301 void dbprint_urb(struct urb *urb)
 302 {
 303         pr_debug("urb->pipe=0x%08x\n", urb->pipe);
 304         pr_debug("urb->status=0x%08x\n", urb->status);
 305         pr_debug("urb->transfer_flags=0x%08x\n", urb->transfer_flags);
 306         pr_debug("urb->transfer_buffer=0x%08x\n",
 307                (unsigned int)urb->transfer_buffer);
 308         pr_debug("urb->transfer_buffer_length=0x%08x\n",
 309                urb->transfer_buffer_length);
 310         pr_debug("urb->actual_length=0x%08x\n", urb->actual_length);
 311         pr_debug("urb->bandwidth=0x%08x\n", urb->bandwidth);
 312         pr_debug("urb->setup_packet(ctl)=0x%08x\n",
 313                (unsigned int)urb->setup_packet);
 314         pr_debug("urb->start_frame(iso/irq)=0x%08x\n",
 315                urb->start_frame);
 316         pr_debug("urb->interval(irq)=0x%08x\n", urb->interval);
 317         pr_debug("urb->error_count(iso)=0x%08x\n", urb->error_count);
 318         pr_debug("urb->timeout=0x%08x\n", urb->timeout);
 319         pr_debug("urb->context=0x%08x\n", (unsigned int)urb->context);
 320         pr_debug("urb->complete=0x%08x\n",
 321                (unsigned int)urb->complete);
 322 }
 323 #endif
 324
 325 /*----------------------------------------------------------------
 326 * submit_rx_urb
 327 *
 328 * Listen for input data on the BULK-IN pipe. If the pipe has
 329 * stalled then schedule it to be reset.
 330 *
 331 * Arguments:
 332 *       hw              device struct
 333 *       memflags        memory allocation flags
 334 *
 335 * Returns:
 336 *       error code from submission
 337 *
 338 * Call context:
 339 *       Any
 340 ----------------------------------------------------------------*/
 341 static int submit_rx_urb(hfa384x_t *hw, gfp_t memflags)
 342 {
 343         struct sk_buff *skb;
 344         int result;
 345
 346         skb = dev_alloc_skb(sizeof(hfa384x_usbin_t));
 347         if (skb == NULL) {
 348                 result = -ENOMEM;
 349                 goto done;
 350         }
 351
 352         /* Post the IN urb */
 353         usb_fill_bulk_urb(&hw->rx_urb, hw->usb,
 354                           hw->endp_in,
 355                           skb->data, sizeof(hfa384x_usbin_t),
 356                           hfa384x_usbin_callback, hw->wlandev);
 357
 358         hw->rx_urb_skb = skb;
 359
 360         result = -ENOLINK;
 361         if (!hw->wlandev->hwremoved && !test_bit(WORK_RX_HALT, &hw->usb_flags)) {
 362                 result = SUBMIT_URB(&hw->rx_urb, memflags);
 363
 364                 /* Check whether we need to reset the RX pipe */
 365                 if (result == -EPIPE) {
 366                         printk(KERN_WARNING
 367                                "%s rx pipe stalled: requesting reset\n",
 368                                hw->wlandev->netdev->name);
 369                         if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags))
 370                                 schedule_work(&hw->usb_work);
 371                 }
 372         }
 373
 374         /* Don't leak memory if anything should go wrong */
 375         if (result != 0) {
 376                 dev_kfree_skb(skb);
 377                 hw->rx_urb_skb = NULL;
 378         }
 379
 380 done:
 381         return result;
 382 }
 383
 384 /*----------------------------------------------------------------
 385 * submit_tx_urb
 386 *
 387 * Prepares and submits the URB of transmitted data. If the
 388 * submission fails then it will schedule the output pipe to
 389 * be reset.
 390 *
 391 * Arguments:
 392 *       hw              device struct
 393 *       tx_urb          URB of data for tranmission
 394 *       memflags        memory allocation flags
 395 *
 396 * Returns:
 397 *       error code from submission
 398 *
 399 * Call context:
 400 *       Any
 401 ----------------------------------------------------------------*/
 402 static int submit_tx_urb(hfa384x_t *hw, struct urb *tx_urb, gfp_t memflags)
 403 {
 404         struct net_device *netdev = hw->wlandev->netdev;
 405         int result;
 406
 407         result = -ENOLINK;
 408         if (netif_running(netdev)) {
 409
 410                 if (!hw->wlandev->hwremoved
 411                     && !test_bit(WORK_TX_HALT, &hw->usb_flags)) {
 412                         result = SUBMIT_URB(tx_urb, memflags);
 413
 414                         /* Test whether we need to reset the TX pipe */
 415                         if (result == -EPIPE) {
 416                                 printk(KERN_WARNING
 417                                        "%s tx pipe stalled: requesting reset\n",
 418                                        netdev->name);
 419                                 set_bit(WORK_TX_HALT, &hw->usb_flags);
 420                                 schedule_work(&hw->usb_work);
 421                         } else if (result == 0) {
 422                                 netif_stop_queue(netdev);
 423                         }
 424                 }
 425         }
 426
 427         return result;
 428 }
 429
 430 /*----------------------------------------------------------------
 431 * hfa394x_usb_defer
 432 *
 433 * There are some things that the USB stack cannot do while
 434 * in interrupt context, so we arrange this function to run
 435 * in process context.
 436 *
 437 * Arguments:
 438 *       hw      device structure
 439 *
 440 * Returns:
 441 *       nothing
 442 *
 443 * Call context:
 444 *       process (by design)
 445 ----------------------------------------------------------------*/
 446 static void hfa384x_usb_defer(struct work_struct *data)
 447 {
 448         hfa384x_t *hw = container_of(data, struct hfa384x, usb_work);
 449         struct net_device *netdev = hw->wlandev->netdev;
 450
 451         /* Don't bother trying to reset anything if the plug
 452          * has been pulled ...
 453          */
 454         if (hw->wlandev->hwremoved)
 455                 return;
 456
 457         /* Reception has stopped: try to reset the input pipe */
 458         if (test_bit(WORK_RX_HALT, &hw->usb_flags)) {
 459                 int ret;
 460
 461                 usb_kill_urb(&hw->rx_urb);      /* Cannot be holding spinlock! */
 462
 463                 ret = usb_clear_halt(hw->usb, hw->endp_in);
 464                 if (ret != 0) {
 465                         printk(KERN_ERR
 466                                "Failed to clear rx pipe for %s: err=%d\n",
 467                                netdev->name, ret);
 468                 } else {
 469                         printk(KERN_INFO "%s rx pipe reset complete.\n",
 470                                netdev->name);
 471                         clear_bit(WORK_RX_HALT, &hw->usb_flags);
 472                         set_bit(WORK_RX_RESUME, &hw->usb_flags);
 473                 }
 474         }
 475
 476         /* Resume receiving data back from the device. */
 477         if (test_bit(WORK_RX_RESUME, &hw->usb_flags)) {
 478                 int ret;
 479
 480                 ret = submit_rx_urb(hw, GFP_KERNEL);
 481                 if (ret != 0) {
 482                         printk(KERN_ERR
 483                                "Failed to resume %s rx pipe.\n", netdev->name);
 484                 } else {
 485                         clear_bit(WORK_RX_RESUME, &hw->usb_flags);
 486                 }
 487         }
 488
 489         /* Transmission has stopped: try to reset the output pipe */
 490         if (test_bit(WORK_TX_HALT, &hw->usb_flags)) {
 491                 int ret;
 492
 493                 usb_kill_urb(&hw->tx_urb);
 494                 ret = usb_clear_halt(hw->usb, hw->endp_out);
 495                 if (ret != 0) {
 496                         printk(KERN_ERR
 497                                "Failed to clear tx pipe for %s: err=%d\n",
 498                                netdev->name, ret);
 499                 } else {
 500                         printk(KERN_INFO "%s tx pipe reset complete.\n",
 501                                netdev->name);
 502                         clear_bit(WORK_TX_HALT, &hw->usb_flags);
 503                         set_bit(WORK_TX_RESUME, &hw->usb_flags);
 504
 505                         /* Stopping the BULK-OUT pipe also blocked
 506                          * us from sending any more CTLX URBs, so
 507                          * we need to re-run our queue ...
 508                          */
 509                         hfa384x_usbctlxq_run(hw);
 510                 }
 511         }
 512
 513         /* Resume transmitting. */
 514         if (test_and_clear_bit(WORK_TX_RESUME, &hw->usb_flags))
 515                 netif_wake_queue(hw->wlandev->netdev);
 516 }
 517
 518 /*----------------------------------------------------------------
 519 * hfa384x_create
 520 *
 521 * Sets up the hfa384x_t data structure for use.  Note this
 522 * does _not_ intialize the actual hardware, just the data structures
 523 * we use to keep track of its state.
 524 *
 525 * Arguments:
 526 *       hw              device structure
 527 *       irq             device irq number
 528 *       iobase          i/o base address for register access
 529 *       membase         memory base address for register access
 530 *
 531 * Returns:
 532 *       nothing
 533 *
 534 * Side effects:
 535 *
 536 * Call context:
 537 *       process
 538 ----------------------------------------------------------------*/
 539 void hfa384x_create(hfa384x_t *hw, struct usb_device *usb)
 540 {
 541         memset(hw, 0, sizeof(hfa384x_t));
 542         hw->usb = usb;
 543
 544         /* set up the endpoints */
 545         hw->endp_in = usb_rcvbulkpipe(usb, 1);
 546         hw->endp_out = usb_sndbulkpipe(usb, 2);
 547
 548         /* Set up the waitq */
 549         init_waitqueue_head(&hw->cmdq);
 550
 551         /* Initialize the command queue */
 552         spin_lock_init(&hw->ctlxq.lock);
 553         INIT_LIST_HEAD(&hw->ctlxq.pending);
 554         INIT_LIST_HEAD(&hw->ctlxq.active);
 555         INIT_LIST_HEAD(&hw->ctlxq.completing);
 556         INIT_LIST_HEAD(&hw->ctlxq.reapable);
 557
 558         /* Initialize the authentication queue */
 559         skb_queue_head_init(&hw->authq);
 560
 561         tasklet_init(&hw->reaper_bh,
 562                      hfa384x_usbctlx_reaper_task, (unsigned long)hw);
 563         tasklet_init(&hw->completion_bh,
 564                      hfa384x_usbctlx_completion_task, (unsigned long)hw);
 565         INIT_WORK(&hw->link_bh, prism2sta_processing_defer);
 566         INIT_WORK(&hw->usb_work, hfa384x_usb_defer);
 567
 568         init_timer(&hw->throttle);
 569         hw->throttle.function = hfa384x_usb_throttlefn;
 570         hw->throttle.data = (unsigned long)hw;
 571
 572         init_timer(&hw->resptimer);
 573         hw->resptimer.function = hfa384x_usbctlx_resptimerfn;
 574         hw->resptimer.data = (unsigned long)hw;
 575
 576         init_timer(&hw->reqtimer);
 577         hw->reqtimer.function = hfa384x_usbctlx_reqtimerfn;
 578         hw->reqtimer.data = (unsigned long)hw;
 579
 580         usb_init_urb(&hw->rx_urb);
 581         usb_init_urb(&hw->tx_urb);
 582         usb_init_urb(&hw->ctlx_urb);
 583
 584         hw->link_status = HFA384x_LINK_NOTCONNECTED;
 585         hw->state = HFA384x_STATE_INIT;
 586
 587         INIT_WORK(&hw->commsqual_bh, prism2sta_commsqual_defer);
 588         init_timer(&hw->commsqual_timer);
 589         hw->commsqual_timer.data = (unsigned long)hw;
 590         hw->commsqual_timer.function = prism2sta_commsqual_timer;
 591 }
 592
 593 /*----------------------------------------------------------------
 594 * hfa384x_destroy
 595 *
 596 * Partner to hfa384x_create().  This function cleans up the hw
 597 * structure so that it can be freed by the caller using a simple
 598 * kfree.  Currently, this function is just a placeholder.  If, at some
 599 * point in the future, an hw in the 'shutdown' state requires a 'deep'
 600 * kfree, this is where it should be done.  Note that if this function
 601 * is called on a _running_ hw structure, the drvr_stop() function is
 602 * called.
 603 *
 604 * Arguments:
 605 *       hw              device structure
 606 *
 607 * Returns:
 608 *       nothing, this function is not allowed to fail.
 609 *
 610 * Side effects:
 611 *
 612 * Call context:
 613 *       process
 614 ----------------------------------------------------------------*/
 615 void hfa384x_destroy(hfa384x_t *hw)
 616 {
 617         struct sk_buff *skb;
 618
 619         if (hw->state == HFA384x_STATE_RUNNING)
 620                 hfa384x_drvr_stop(hw);
 621         hw->state = HFA384x_STATE_PREINIT;
 622
 623         if (hw->scanresults) {
 624                 kfree(hw->scanresults);
 625                 hw->scanresults = NULL;
 626         }
 627
 628         /* Now to clean out the auth queue */
 629         while ((skb = skb_dequeue(&hw->authq)))
 630                 dev_kfree_skb(skb);
 631 }
 632
 633 static hfa384x_usbctlx_t *usbctlx_alloc(void)
 634 {
 635         hfa384x_usbctlx_t *ctlx;
 636
 637         ctlx = kmalloc(sizeof(*ctlx), in_interrupt() ? GFP_ATOMIC : GFP_KERNEL);
 638         if (ctlx != NULL) {
 639                 memset(ctlx, 0, sizeof(*ctlx));
 640                 init_completion(&ctlx->done);
 641         }
 642
 643         return ctlx;
 644 }
 645
 646 static int
 647 usbctlx_get_status(const hfa384x_usb_cmdresp_t *cmdresp,
 648                    hfa384x_cmdresult_t *result)
 649 {
 650         result->status = le16_to_cpu(cmdresp->status);
 651         result->resp0 = le16_to_cpu(cmdresp->resp0);
 652         result->resp1 = le16_to_cpu(cmdresp->resp1);
 653         result->resp2 = le16_to_cpu(cmdresp->resp2);
 654
 655         pr_debug("cmdresult:status=0x%04x "
 656                "resp0=0x%04x resp1=0x%04x resp2=0x%04x\n",
 657                result->status, result->resp0, result->resp1, result->resp2);
 658
 659         return result->status & HFA384x_STATUS_RESULT;
 660 }
 661
 662 static void
 663 usbctlx_get_rridresult(const hfa384x_usb_rridresp_t *rridresp,
 664                        hfa384x_rridresult_t *result)
 665 {
 666         result->rid = le16_to_cpu(rridresp->rid);
 667         result->riddata = rridresp->data;
 668         result->riddata_len = ((le16_to_cpu(rridresp->frmlen) - 1) * 2);
 669
 670 }
 671
 672 /*----------------------------------------------------------------
 673 * Completor object:
 674 * This completor must be passed to hfa384x_usbctlx_complete_sync()
 675 * when processing a CTLX that returns a hfa384x_cmdresult_t structure.
 676 ----------------------------------------------------------------*/
 677 struct usbctlx_cmd_completor {
 678         usbctlx_completor_t head;
 679
 680         const hfa384x_usb_cmdresp_t *cmdresp;
 681         hfa384x_cmdresult_t *result;
 682 };
 683 typedef struct usbctlx_cmd_completor usbctlx_cmd_completor_t;
 684
 685 static int usbctlx_cmd_completor_fn(usbctlx_completor_t *head)
 686 {
 687         usbctlx_cmd_completor_t *complete = (usbctlx_cmd_completor_t *) head;
 688         return usbctlx_get_status(complete->cmdresp, complete->result);
 689 }
 690
 691 static inline usbctlx_completor_t *init_cmd_completor(usbctlx_cmd_completor_t *
 692                                                       completor,
 693                                                       const
 694                                                       hfa384x_usb_cmdresp_t *
 695                                                       cmdresp,
 696                                                       hfa384x_cmdresult_t *
 697                                                       result)
 698 {
 699         completor->head.complete = usbctlx_cmd_completor_fn;
 700         completor->cmdresp = cmdresp;
 701         completor->result = result;
 702         return &(completor->head);
 703 }
 704
 705 /*----------------------------------------------------------------
 706 * Completor object:
 707 * This completor must be passed to hfa384x_usbctlx_complete_sync()
 708 * when processing a CTLX that reads a RID.
 709 ----------------------------------------------------------------*/
 710 struct usbctlx_rrid_completor {
 711         usbctlx_completor_t head;
 712
 713         const hfa384x_usb_rridresp_t *rridresp;
 714         void *riddata;
 715         unsigned int riddatalen;
 716 };
 717 typedef struct usbctlx_rrid_completor usbctlx_rrid_completor_t;
 718
 719 static int usbctlx_rrid_completor_fn(usbctlx_completor_t *head)
 720 {
 721         usbctlx_rrid_completor_t *complete = (usbctlx_rrid_completor_t *) head;
 722         hfa384x_rridresult_t rridresult;
 723
 724         usbctlx_get_rridresult(complete->rridresp, &rridresult);
 725
 726         /* Validate the length, note body len calculation in bytes */
 727         if (rridresult.riddata_len != complete->riddatalen) {
 728                 printk(KERN_WARNING
 729                        "RID len mismatch, rid=0x%04x hlen=%d fwlen=%d\n",
 730                        rridresult.rid,
 731                        complete->riddatalen, rridresult.riddata_len);
 732                 return -ENODATA;
 733         }
 734
 735         memcpy(complete->riddata, rridresult.riddata, complete->riddatalen);
 736         return 0;
 737 }
 738
 739 static inline usbctlx_completor_t *init_rrid_completor(usbctlx_rrid_completor_t
 740                                                        *completor,
 741                                                        const
 742                                                        hfa384x_usb_rridresp_t *
 743                                                        rridresp, void *riddata,
 744                                                        unsigned int riddatalen)
 745 {
 746         completor->head.complete = usbctlx_rrid_completor_fn;
 747         completor->rridresp = rridresp;
 748         completor->riddata = riddata;
 749         completor->riddatalen = riddatalen;
 750         return &(completor->head);
 751 }
 752
 753 /*----------------------------------------------------------------
 754 * Completor object:
 755 * Interprets the results of a synchronous RID-write
 756 ----------------------------------------------------------------*/
 757 typedef usbctlx_cmd_completor_t usbctlx_wrid_completor_t;
 758 #define init_wrid_completor  init_cmd_completor
 759
 760 /*----------------------------------------------------------------
 761 * Completor object:
 762 * Interprets the results of a synchronous memory-write
 763 ----------------------------------------------------------------*/
 764 typedef usbctlx_cmd_completor_t usbctlx_wmem_completor_t;
 765 #define init_wmem_completor  init_cmd_completor
 766
 767 /*----------------------------------------------------------------
 768 * Completor object:
 769 * Interprets the results of a synchronous memory-read
 770 ----------------------------------------------------------------*/
 771 struct usbctlx_rmem_completor {
 772         usbctlx_completor_t head;
 773
 774         const hfa384x_usb_rmemresp_t *rmemresp;
 775         void *data;
 776         unsigned int len;
 777 };
 778 typedef struct usbctlx_rmem_completor usbctlx_rmem_completor_t;
 779
 780 static int usbctlx_rmem_completor_fn(usbctlx_completor_t *head)
 781 {
 782         usbctlx_rmem_completor_t *complete = (usbctlx_rmem_completor_t *) head;
 783
 784         pr_debug("rmemresp:len=%d\n", complete->rmemresp->frmlen);
 785         memcpy(complete->data, complete->rmemresp->data, complete->len);
 786         return 0;
 787 }
 788
 789 static inline usbctlx_completor_t *init_rmem_completor(usbctlx_rmem_completor_t
 790                                                        *completor,
 791                                                        hfa384x_usb_rmemresp_t
 792                                                        *rmemresp, void *data,
 793                                                        unsigned int len)
 794 {
 795         completor->head.complete = usbctlx_rmem_completor_fn;
 796         completor->rmemresp = rmemresp;
 797         completor->data = data;
 798         completor->len = len;
 799         return &(completor->head);
 800 }
 801
 802 /*----------------------------------------------------------------
 803 * hfa384x_cb_status
 804 *
 805 * Ctlx_complete handler for async CMD type control exchanges.
 806 * mark the hw struct as such.
 807 *
 808 * Note: If the handling is changed here, it should probably be
 809 *       changed in docmd as well.
 810 *
 811 * Arguments:
 812 *       hw              hw struct
 813 *       ctlx            completed CTLX
 814 *
 815 * Returns:
 816 *       nothing
 817 *
 818 * Side effects:
 819 *
 820 * Call context:
 821 *       interrupt
 822 ----------------------------------------------------------------*/
 823 static void hfa384x_cb_status(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx)
 824 {
 825         if (ctlx->usercb != NULL) {
 826                 hfa384x_cmdresult_t cmdresult;
 827
 828                 if (ctlx->state != CTLX_COMPLETE) {
 829                         memset(&cmdresult, 0, sizeof(cmdresult));
 830                         cmdresult.status =
 831                             HFA384x_STATUS_RESULT_SET(HFA384x_CMD_ERR);
 832                 } else {
 833                         usbctlx_get_status(&ctlx->inbuf.cmdresp, &cmdresult);
 834                 }
 835
 836                 ctlx->usercb(hw, &cmdresult, ctlx->usercb_data);
 837         }
 838 }
 839
 840 /*----------------------------------------------------------------
 841 * hfa384x_cb_rrid
 842 *
 843 * CTLX completion handler for async RRID type control exchanges.
 844 *
 845 * Note: If the handling is changed here, it should probably be
 846 *       changed in dorrid as well.
 847 *
 848 * Arguments:
 849 *       hw              hw struct
 850 *       ctlx            completed CTLX
 851 *
 852 * Returns:
 853 *       nothing
 854 *
 855 * Side effects:
 856 *
 857 * Call context:
 858 *       interrupt
 859 ----------------------------------------------------------------*/
 860 static void hfa384x_cb_rrid(hfa384x_t *hw, const hfa384x_usbctlx_t *ctlx)
 861 {
 862         if (ctlx->usercb != NULL) {
 863                 hfa384x_rridresult_t rridresult;
 864
 865                 if (ctlx->state != CTLX_COMPLETE) {
 866                         memset(&rridresult, 0, sizeof(rridresult));
 867                         rridresult.rid =
 868                             le16_to_cpu(ctlx->outbuf.rridreq.rid);
 869                 } else {
 870                         usbctlx_get_rridresult(&ctlx->inbuf.rridresp,
 871                                                &rridresult);
 872                 }
 873
 874                 ctlx->usercb(hw, &rridresult, ctlx->usercb_data);
 875         }
 876 }
 877
 878 static inline int hfa384x_docmd_wait(hfa384x_t *hw, hfa384x_metacmd_t *cmd)
 879 {
 880         return hfa384x_docmd(hw, DOWAIT, cmd, NULL, NULL, NULL);
 881 }
 882
 883 static inline int
 884 hfa384x_docmd_async(hfa384x_t *hw,
 885                     hfa384x_metacmd_t *cmd,
 886                     ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
 887 {
 888         return hfa384x_docmd(hw, DOASYNC, cmd, cmdcb, usercb, usercb_data);
 889 }
 890
 891 static inline int
 892 hfa384x_dorrid_wait(hfa384x_t *hw, u16 rid, void *riddata,
 893                     unsigned int riddatalen)
 894 {
 895         return hfa384x_dorrid(hw, DOWAIT,
 896                               rid, riddata, riddatalen, NULL, NULL, NULL);
 897 }
 898
 899 static inline int
 900 hfa384x_dorrid_async(hfa384x_t *hw,
 901                      u16 rid, void *riddata, unsigned int riddatalen,
 902                      ctlx_cmdcb_t cmdcb,
 903                      ctlx_usercb_t usercb, void *usercb_data)
 904 {
 905         return hfa384x_dorrid(hw, DOASYNC,
 906                               rid, riddata, riddatalen,
 907                               cmdcb, usercb, usercb_data);
 908 }
 909
 910 static inline int
 911 hfa384x_dowrid_wait(hfa384x_t *hw, u16 rid, void *riddata,
 912                     unsigned int riddatalen)
 913 {
 914         return hfa384x_dowrid(hw, DOWAIT,
 915                               rid, riddata, riddatalen, NULL, NULL, NULL);
 916 }
 917
 918 static inline int
 919 hfa384x_dowrid_async(hfa384x_t *hw,
 920                      u16 rid, void *riddata, unsigned int riddatalen,
 921                      ctlx_cmdcb_t cmdcb,
 922                      ctlx_usercb_t usercb, void *usercb_data)
 923 {
 924         return hfa384x_dowrid(hw, DOASYNC,
 925                               rid, riddata, riddatalen,
 926                               cmdcb, usercb, usercb_data);
 927 }
 928
 929 static inline int
 930 hfa384x_dormem_wait(hfa384x_t *hw,
 931                     u16 page, u16 offset, void *data, unsigned int len)
 932 {
 933         return hfa384x_dormem(hw, DOWAIT,
 934                               page, offset, data, len, NULL, NULL, NULL);
 935 }
 936
 937 static inline int
 938 hfa384x_dormem_async(hfa384x_t *hw,
 939                      u16 page, u16 offset, void *data, unsigned int len,
 940                      ctlx_cmdcb_t cmdcb,
 941                      ctlx_usercb_t usercb, void *usercb_data)
 942 {
 943         return hfa384x_dormem(hw, DOASYNC,
 944                               page, offset, data, len,
 945                               cmdcb, usercb, usercb_data);
 946 }
 947
 948 static inline int
 949 hfa384x_dowmem_wait(hfa384x_t *hw,
 950                     u16 page, u16 offset, void *data, unsigned int len)
 951 {
 952         return hfa384x_dowmem(hw, DOWAIT,
 953                               page, offset, data, len, NULL, NULL, NULL);
 954 }
 955
 956 static inline int
 957 hfa384x_dowmem_async(hfa384x_t *hw,
 958                      u16 page,
 959                      u16 offset,
 960                      void *data,
 961                      unsigned int len,
 962                      ctlx_cmdcb_t cmdcb,
 963                      ctlx_usercb_t usercb, void *usercb_data)
 964 {
 965         return hfa384x_dowmem(hw, DOASYNC,
 966                               page, offset, data, len,
 967                               cmdcb, usercb, usercb_data);
 968 }
 969
 970 /*----------------------------------------------------------------
 971 * hfa384x_cmd_initialize
 972 *
 973 * Issues the initialize command and sets the hw->state based
 974 * on the result.
 975 *
 976 * Arguments:
 977 *       hw              device structure
 978 *
 979 * Returns:
 980 *       0               success
 981 *       >0              f/w reported error - f/w status code
 982 *       <0              driver reported error
 983 *
 984 * Side effects:
 985 *
 986 * Call context:
 987 *       process
 988 ----------------------------------------------------------------*/
 989 int hfa384x_cmd_initialize(hfa384x_t *hw)
 990 {
 991         int result = 0;
 992         int i;
 993         hfa384x_metacmd_t cmd;
 994
 995         cmd.cmd = HFA384x_CMDCODE_INIT;
 996         cmd.parm0 = 0;
 997         cmd.parm1 = 0;
 998         cmd.parm2 = 0;
 999
1000         result = hfa384x_docmd_wait(hw, &cmd);
1001
1002         pr_debug("cmdresp.init: "
1003                "status=0x%04x, resp0=0x%04x, "
1004                "resp1=0x%04x, resp2=0x%04x\n",
1005                cmd.result.status,
1006                cmd.result.resp0, cmd.result.resp1, cmd.result.resp2);
1007         if (result == 0) {
1008                 for (i = 0; i < HFA384x_NUMPORTS_MAX; i++)
1009                         hw->port_enabled[i] = 0;
1010         }
1011
1012         hw->link_status = HFA384x_LINK_NOTCONNECTED;
1013
1014         return result;
1015 }
1016
1017 /*----------------------------------------------------------------
1018 * hfa384x_cmd_disable
1019 *
1020 * Issues the disable command to stop communications on one of
1021 * the MACs 'ports'.
1022 *
1023 * Arguments:
1024 *       hw              device structure
1025 *       macport         MAC port number (host order)
1026 *
1027 * Returns:
1028 *       0               success
1029 *       >0              f/w reported failure - f/w status code
1030 *       <0              driver reported error (timeout|bad arg)
1031 *
1032 * Side effects:
1033 *
1034 * Call context:
1035 *       process
1036 ----------------------------------------------------------------*/
1037 int hfa384x_cmd_disable(hfa384x_t *hw, u16 macport)
1038 {
1039         int result = 0;
1040         hfa384x_metacmd_t cmd;
1041
1042         cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_DISABLE) |
1043             HFA384x_CMD_MACPORT_SET(macport);
1044         cmd.parm0 = 0;
1045         cmd.parm1 = 0;
1046         cmd.parm2 = 0;
1047
1048         result = hfa384x_docmd_wait(hw, &cmd);
1049
1050         return result;
1051 }
1052
1053 /*----------------------------------------------------------------
1054 * hfa384x_cmd_enable
1055 *
1056 * Issues the enable command to enable communications on one of
1057 * the MACs 'ports'.
1058 *
1059 * Arguments:
1060 *       hw              device structure
1061 *       macport         MAC port number
1062 *
1063 * Returns:
1064 *       0               success
1065 *       >0              f/w reported failure - f/w status code
1066 *       <0              driver reported error (timeout|bad arg)
1067 *
1068 * Side effects:
1069 *
1070 * Call context:
1071 *       process
1072 ----------------------------------------------------------------*/
1073 int hfa384x_cmd_enable(hfa384x_t *hw, u16 macport)
1074 {
1075         int result = 0;
1076         hfa384x_metacmd_t cmd;
1077
1078         cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_ENABLE) |
1079             HFA384x_CMD_MACPORT_SET(macport);
1080         cmd.parm0 = 0;
1081         cmd.parm1 = 0;
1082         cmd.parm2 = 0;
1083
1084         result = hfa384x_docmd_wait(hw, &cmd);
1085
1086         return result;
1087 }
1088
1089 /*----------------------------------------------------------------
1090 * hfa384x_cmd_monitor
1091 *
1092 * Enables the 'monitor mode' of the MAC.  Here's the description of
1093 * monitor mode that I've received thus far:
1094 *
1095 *  "The "monitor mode" of operation is that the MAC passes all
1096 *  frames for which the PLCP checks are correct. All received
1097 *  MPDUs are passed to the host with MAC Port = 7, with a
1098 *  receive status of good, FCS error, or undecryptable. Passing
1099 *  certain MPDUs is a violation of the 802.11 standard, but useful
1100 *  for a debugging tool."  Normal communication is not possible
1101 *  while monitor mode is enabled.
1102 *
1103 * Arguments:
1104 *       hw              device structure
1105 *       enable          a code (0x0b|0x0f) that enables/disables
1106 *                       monitor mode. (host order)
1107 *
1108 * Returns:
1109 *       0               success
1110 *       >0              f/w reported failure - f/w status code
1111 *       <0              driver reported error (timeout|bad arg)
1112 *
1113 * Side effects:
1114 *
1115 * Call context:
1116 *       process
1117 ----------------------------------------------------------------*/
1118 int hfa384x_cmd_monitor(hfa384x_t *hw, u16 enable)
1119 {
1120         int result = 0;
1121         hfa384x_metacmd_t cmd;
1122
1123         cmd.cmd = HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_MONITOR) |
1124             HFA384x_CMD_AINFO_SET(enable);
1125         cmd.parm0 = 0;
1126         cmd.parm1 = 0;
1127         cmd.parm2 = 0;
1128
1129         result = hfa384x_docmd_wait(hw, &cmd);
1130
1131         return result;
1132 }
1133
1134 /*----------------------------------------------------------------
1135 * hfa384x_cmd_download
1136 *
1137 * Sets the controls for the MAC controller code/data download
1138 * process.  The arguments set the mode and address associated
1139 * with a download.  Note that the aux registers should be enabled
1140 * prior to setting one of the download enable modes.
1141 *
1142 * Arguments:
1143 *       hw              device structure
1144 *       mode            0 - Disable programming and begin code exec
1145 *                       1 - Enable volatile mem programming
1146 *                       2 - Enable non-volatile mem programming
1147 *                       3 - Program non-volatile section from NV download
1148 *                           buffer.
1149 *                       (host order)
1150 *       lowaddr
1151 *       highaddr        For mode 1, sets the high & low order bits of
1152 *                       the "destination address".  This address will be
1153 *                       the execution start address when download is
1154 *                       subsequently disabled.
1155 *                       For mode 2, sets the high & low order bits of
1156 *                       the destination in NV ram.
1157 *                       For modes 0 & 3, should be zero. (host order)
1158 *                       NOTE: these are CMD format.
1159 *       codelen         Length of the data to write in mode 2,
1160 *                       zero otherwise. (host order)
1161 *
1162 * Returns:
1163 *       0               success
1164 *       >0              f/w reported failure - f/w status code
1165 *       <0              driver reported error (timeout|bad arg)
1166 *
1167 * Side effects:
1168 *
1169 * Call context:
1170 *       process
1171 ----------------------------------------------------------------*/
1172 int hfa384x_cmd_download(hfa384x_t *hw, u16 mode, u16 lowaddr,
1173                          u16 highaddr, u16 codelen)
1174 {
1175         int result = 0;
1176         hfa384x_metacmd_t cmd;
1177
1178         printk(KERN_DEBUG
1179                "mode=%d, lowaddr=0x%04x, highaddr=0x%04x, codelen=%d\n",
1180                mode, lowaddr, highaddr, codelen);
1181
1182         cmd.cmd = (HFA384x_CMD_CMDCODE_SET(HFA384x_CMDCODE_DOWNLD) |
1183                    HFA384x_CMD_PROGMODE_SET(mode));
1184
1185         cmd.parm0 = lowaddr;
1186         cmd.parm1 = highaddr;
1187         cmd.parm2 = codelen;
1188
1189         result = hfa384x_docmd_wait(hw, &cmd);
1190
1191         return result;
1192 }
1193
1194 /*----------------------------------------------------------------
1195 * hfa384x_corereset
1196 *
1197 * Perform a reset of the hfa38xx MAC core.  We assume that the hw
1198 * structure is in its "created" state.  That is, it is initialized
1199 * with proper values.  Note that if a reset is done after the
1200 * device has been active for awhile, the caller might have to clean
1201 * up some leftover cruft in the hw structure.
1202 *
1203 * Arguments:
1204 *       hw              device structure
1205 *       holdtime        how long (in ms) to hold the reset
1206 *       settletime      how long (in ms) to wait after releasing
1207 *                       the reset
1208 *
1209 * Returns:
1210 *       nothing
1211 *
1212 * Side effects:
1213 *
1214 * Call context:
1215 *       process
1216 ----------------------------------------------------------------*/
1217 int hfa384x_corereset(hfa384x_t *hw, int holdtime, int settletime, int genesis)
1218 {
1219         int result = 0;
1220
1221         result = usb_reset_device(hw->usb);
1222         if (result < 0) {
1223                 printk(KERN_ERR "usb_reset_device() failed, result=%d.\n",
1224                        result);
1225         }
1226
1227         return result;
1228 }
1229
1230 /*----------------------------------------------------------------
1231 * hfa384x_usbctlx_complete_sync
1232 *
1233 * Waits for a synchronous CTLX object to complete,
1234 * and then handles the response.
1235 *
1236 * Arguments:
1237 *       hw              device structure
1238 *       ctlx            CTLX ptr
1239 *       completor       functor object to decide what to
1240 *                       do with the CTLX's result.
1241 *
1242 * Returns:
1243 *       0               Success
1244 *       -ERESTARTSYS    Interrupted by a signal
1245 *       -EIO            CTLX failed
1246 *       -ENODEV         Adapter was unplugged
1247 *       ???             Result from completor
1248 *
1249 * Side effects:
1250 *
1251 * Call context:
1252 *       process
1253 ----------------------------------------------------------------*/
1254 static int hfa384x_usbctlx_complete_sync(hfa384x_t *hw,
1255                                          hfa384x_usbctlx_t *ctlx,
1256                                          usbctlx_completor_t *completor)
1257 {
1258         unsigned long flags;
1259         int result;
1260
1261         result = wait_for_completion_interruptible(&ctlx->done);
1262
1263         spin_lock_irqsave(&hw->ctlxq.lock, flags);
1264
1265         /*
1266          * We can only handle the CTLX if the USB disconnect
1267          * function has not run yet ...
1268          */
1269 cleanup:
1270         if (hw->wlandev->hwremoved) {
1271                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
1272                 result = -ENODEV;
1273         } else if (result != 0) {
1274                 int runqueue = 0;
1275
1276                 /*
1277                  * We were probably interrupted, so delete
1278                  * this CTLX asynchronously, kill the timers
1279                  * and the URB, and then start the next
1280                  * pending CTLX.
1281                  *
1282                  * NOTE: We can only delete the timers and
1283                  *       the URB if this CTLX is active.
1284                  */
1285                 if (ctlx == get_active_ctlx(hw)) {
1286                         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
1287
1288                         del_singleshot_timer_sync(&hw->reqtimer);
1289                         del_singleshot_timer_sync(&hw->resptimer);
1290                         hw->req_timer_done = 1;
1291                         hw->resp_timer_done = 1;
1292                         usb_kill_urb(&hw->ctlx_urb);
1293
1294                         spin_lock_irqsave(&hw->ctlxq.lock, flags);
1295
1296                         runqueue = 1;
1297
1298                         /*
1299                          * This scenario is so unlikely that I'm
1300                          * happy with a grubby "goto" solution ...
1301                          */
1302                         if (hw->wlandev->hwremoved)
1303                                 goto cleanup;
1304                 }
1305
1306                 /*
1307                  * The completion task will send this CTLX
1308                  * to the reaper the next time it runs. We
1309                  * are no longer in a hurry.
1310                  */
1311                 ctlx->reapable = 1;
1312                 ctlx->state = CTLX_REQ_FAILED;
1313                 list_move_tail(&ctlx->list, &hw->ctlxq.completing);
1314
1315                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
1316
1317                 if (runqueue)
1318                         hfa384x_usbctlxq_run(hw);
1319         } else {
1320                 if (ctlx->state == CTLX_COMPLETE) {
1321                         result = completor->complete(completor);
1322                 } else {
1323                         printk(KERN_WARNING "CTLX[%d] error: state(%s)\n",
1324                                le16_to_cpu(ctlx->outbuf.type),
1325                                ctlxstr(ctlx->state));
1326                         result = -EIO;
1327                 }
1328
1329                 list_del(&ctlx->list);
1330                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
1331                 kfree(ctlx);
1332         }
1333
1334         return result;
1335 }
1336
1337 /*----------------------------------------------------------------
1338 * hfa384x_docmd
1339 *
1340 * Constructs a command CTLX and submits it.
1341 *
1342 * NOTE: Any changes to the 'post-submit' code in this function
1343 *       need to be carried over to hfa384x_cbcmd() since the handling
1344 *       is virtually identical.
1345 *
1346 * Arguments:
1347 *       hw              device structure
1348 *       mode            DOWAIT or DOASYNC
1349 *       cmd             cmd structure.  Includes all arguments and result
1350 *                       data points.  All in host order. in host order
1351 *       cmdcb           command-specific callback
1352 *       usercb          user callback for async calls, NULL for DOWAIT calls
1353 *       usercb_data     user supplied data pointer for async calls, NULL
1354 *                       for DOASYNC calls
1355 *
1356 * Returns:
1357 *       0               success
1358 *       -EIO            CTLX failure
1359 *       -ERESTARTSYS    Awakened on signal
1360 *       >0              command indicated error, Status and Resp0-2 are
1361 *                       in hw structure.
1362 *
1363 * Side effects:
1364 *
1365 *
1366 * Call context:
1367 *       process
1368 ----------------------------------------------------------------*/
1369 static int
1370 hfa384x_docmd(hfa384x_t *hw,
1371               CMD_MODE mode,
1372               hfa384x_metacmd_t *cmd,
1373               ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
1374 {
1375         int result;
1376         hfa384x_usbctlx_t *ctlx;
1377
1378         ctlx = usbctlx_alloc();
1379         if (ctlx == NULL) {
1380                 result = -ENOMEM;
1381                 goto done;
1382         }
1383
1384         /* Initialize the command */
1385         ctlx->outbuf.cmdreq.type = cpu_to_le16(HFA384x_USB_CMDREQ);
1386         ctlx->outbuf.cmdreq.cmd = cpu_to_le16(cmd->cmd);
1387         ctlx->outbuf.cmdreq.parm0 = cpu_to_le16(cmd->parm0);
1388         ctlx->outbuf.cmdreq.parm1 = cpu_to_le16(cmd->parm1);
1389         ctlx->outbuf.cmdreq.parm2 = cpu_to_le16(cmd->parm2);
1390
1391         ctlx->outbufsize = sizeof(ctlx->outbuf.cmdreq);
1392
1393         pr_debug("cmdreq: cmd=0x%04x "
1394                "parm0=0x%04x parm1=0x%04x parm2=0x%04x\n",
1395                cmd->cmd, cmd->parm0, cmd->parm1, cmd->parm2);
1396
1397         ctlx->reapable = mode;
1398         ctlx->cmdcb = cmdcb;
1399         ctlx->usercb = usercb;
1400         ctlx->usercb_data = usercb_data;
1401
1402         result = hfa384x_usbctlx_submit(hw, ctlx);
1403         if (result != 0) {
1404                 kfree(ctlx);
1405         } else if (mode == DOWAIT) {
1406                 usbctlx_cmd_completor_t completor;
1407
1408                 result =
1409                     hfa384x_usbctlx_complete_sync(hw, ctlx,
1410                                                   init_cmd_completor(&completor,
1411                                                                      &ctlx->
1412                                                                      inbuf.
1413                                                                      cmdresp,
1414                                                                      &cmd->
1415                                                                      result));
1416         }
1417
1418 done:
1419         return result;
1420 }
1421
1422 /*----------------------------------------------------------------
1423 * hfa384x_dorrid
1424 *
1425 * Constructs a read rid CTLX and issues it.
1426 *
1427 * NOTE: Any changes to the 'post-submit' code in this function
1428 *       need to be carried over to hfa384x_cbrrid() since the handling
1429 *       is virtually identical.
1430 *
1431 * Arguments:
1432 *       hw              device structure
1433 *       mode            DOWAIT or DOASYNC
1434 *       rid             Read RID number (host order)
1435 *       riddata         Caller supplied buffer that MAC formatted RID.data
1436 *                       record will be written to for DOWAIT calls. Should
1437 *                       be NULL for DOASYNC calls.
1438 *       riddatalen      Buffer length for DOWAIT calls. Zero for DOASYNC calls.
1439 *       cmdcb           command callback for async calls, NULL for DOWAIT calls
1440 *       usercb          user callback for async calls, NULL for DOWAIT calls
1441 *       usercb_data     user supplied data pointer for async calls, NULL
1442 *                       for DOWAIT calls
1443 *
1444 * Returns:
1445 *       0               success
1446 *       -EIO            CTLX failure
1447 *       -ERESTARTSYS    Awakened on signal
1448 *       -ENODATA        riddatalen != macdatalen
1449 *       >0              command indicated error, Status and Resp0-2 are
1450 *                       in hw structure.
1451 *
1452 * Side effects:
1453 *
1454 * Call context:
1455 *       interrupt (DOASYNC)
1456 *       process (DOWAIT or DOASYNC)
1457 ----------------------------------------------------------------*/
1458 static int
1459 hfa384x_dorrid(hfa384x_t *hw,
1460                CMD_MODE mode,
1461                u16 rid,
1462                void *riddata,
1463                unsigned int riddatalen,
1464                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
1465 {
1466         int result;
1467         hfa384x_usbctlx_t *ctlx;
1468
1469         ctlx = usbctlx_alloc();
1470         if (ctlx == NULL) {
1471                 result = -ENOMEM;
1472                 goto done;
1473         }
1474
1475         /* Initialize the command */
1476         ctlx->outbuf.rridreq.type = cpu_to_le16(HFA384x_USB_RRIDREQ);
1477         ctlx->outbuf.rridreq.frmlen =
1478             cpu_to_le16(sizeof(ctlx->outbuf.rridreq.rid));
1479         ctlx->outbuf.rridreq.rid = cpu_to_le16(rid);
1480
1481         ctlx->outbufsize = sizeof(ctlx->outbuf.rridreq);
1482
1483         ctlx->reapable = mode;
1484         ctlx->cmdcb = cmdcb;
1485         ctlx->usercb = usercb;
1486         ctlx->usercb_data = usercb_data;
1487
1488         /* Submit the CTLX */
1489         result = hfa384x_usbctlx_submit(hw, ctlx);
1490         if (result != 0) {
1491                 kfree(ctlx);
1492         } else if (mode == DOWAIT) {
1493                 usbctlx_rrid_completor_t completor;
1494
1495                 result =
1496                     hfa384x_usbctlx_complete_sync(hw, ctlx,
1497                                                   init_rrid_completor
1498                                                   (&completor,
1499                                                    &ctlx->inbuf.rridresp,
1500                                                    riddata, riddatalen));
1501         }
1502
1503 done:
1504         return result;
1505 }
1506
1507 /*----------------------------------------------------------------
1508 * hfa384x_dowrid
1509 *
1510 * Constructs a write rid CTLX and issues it.
1511 *
1512 * NOTE: Any changes to the 'post-submit' code in this function
1513 *       need to be carried over to hfa384x_cbwrid() since the handling
1514 *       is virtually identical.
1515 *
1516 * Arguments:
1517 *       hw              device structure
1518 *       CMD_MODE        DOWAIT or DOASYNC
1519 *       rid             RID code
1520 *       riddata         Data portion of RID formatted for MAC
1521 *       riddatalen      Length of the data portion in bytes
1522 *       cmdcb           command callback for async calls, NULL for DOWAIT calls
1523 *       usercb          user callback for async calls, NULL for DOWAIT calls
1524 *       usercb_data     user supplied data pointer for async calls
1525 *
1526 * Returns:
1527 *       0               success
1528 *       -ETIMEDOUT      timed out waiting for register ready or
1529 *                       command completion
1530 *       >0              command indicated error, Status and Resp0-2 are
1531 *                       in hw structure.
1532 *
1533 * Side effects:
1534 *
1535 * Call context:
1536 *       interrupt (DOASYNC)
1537 *       process (DOWAIT or DOASYNC)
1538 ----------------------------------------------------------------*/
1539 static int
1540 hfa384x_dowrid(hfa384x_t *hw,
1541                CMD_MODE mode,
1542                u16 rid,
1543                void *riddata,
1544                unsigned int riddatalen,
1545                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
1546 {
1547         int result;
1548         hfa384x_usbctlx_t *ctlx;
1549
1550         ctlx = usbctlx_alloc();
1551         if (ctlx == NULL) {
1552                 result = -ENOMEM;
1553                 goto done;
1554         }
1555
1556         /* Initialize the command */
1557         ctlx->outbuf.wridreq.type = cpu_to_le16(HFA384x_USB_WRIDREQ);
1558         ctlx->outbuf.wridreq.frmlen = cpu_to_le16((sizeof
1559                                                        (ctlx->outbuf.wridreq.
1560                                                         rid) + riddatalen +
1561                                                        1) / 2);
1562         ctlx->outbuf.wridreq.rid = cpu_to_le16(rid);
1563         memcpy(ctlx->outbuf.wridreq.data, riddata, riddatalen);
1564
1565         ctlx->outbufsize = sizeof(ctlx->outbuf.wridreq.type) +
1566             sizeof(ctlx->outbuf.wridreq.frmlen) +
1567             sizeof(ctlx->outbuf.wridreq.rid) + riddatalen;
1568
1569         ctlx->reapable = mode;
1570         ctlx->cmdcb = cmdcb;
1571         ctlx->usercb = usercb;
1572         ctlx->usercb_data = usercb_data;
1573
1574         /* Submit the CTLX */
1575         result = hfa384x_usbctlx_submit(hw, ctlx);
1576         if (result != 0) {
1577                 kfree(ctlx);
1578         } else if (mode == DOWAIT) {
1579                 usbctlx_wrid_completor_t completor;
1580                 hfa384x_cmdresult_t wridresult;
1581
1582                 result = hfa384x_usbctlx_complete_sync(hw,
1583                                                        ctlx,
1584                                                        init_wrid_completor
1585                                                        (&completor,
1586                                                         &ctlx->inbuf.wridresp,
1587                                                         &wridresult));
1588         }
1589
1590 done:
1591         return result;
1592 }
1593
1594 /*----------------------------------------------------------------
1595 * hfa384x_dormem
1596 *
1597 * Constructs a readmem CTLX and issues it.
1598 *
1599 * NOTE: Any changes to the 'post-submit' code in this function
1600 *       need to be carried over to hfa384x_cbrmem() since the handling
1601 *       is virtually identical.
1602 *
1603 * Arguments:
1604 *       hw              device structure
1605 *       mode            DOWAIT or DOASYNC
1606 *       page            MAC address space page (CMD format)
1607 *       offset          MAC address space offset
1608 *       data            Ptr to data buffer to receive read
1609 *       len             Length of the data to read (max == 2048)
1610 *       cmdcb           command callback for async calls, NULL for DOWAIT calls
1611 *       usercb          user callback for async calls, NULL for DOWAIT calls
1612 *       usercb_data     user supplied data pointer for async calls
1613 *
1614 * Returns:
1615 *       0               success
1616 *       -ETIMEDOUT      timed out waiting for register ready or
1617 *                       command completion
1618 *       >0              command indicated error, Status and Resp0-2 are
1619 *                       in hw structure.
1620 *
1621 * Side effects:
1622 *
1623 * Call context:
1624 *       interrupt (DOASYNC)
1625 *       process (DOWAIT or DOASYNC)
1626 ----------------------------------------------------------------*/
1627 static int
1628 hfa384x_dormem(hfa384x_t *hw,
1629                CMD_MODE mode,
1630                u16 page,
1631                u16 offset,
1632                void *data,
1633                unsigned int len,
1634                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
1635 {
1636         int result;
1637         hfa384x_usbctlx_t *ctlx;
1638
1639         ctlx = usbctlx_alloc();
1640         if (ctlx == NULL) {
1641                 result = -ENOMEM;
1642                 goto done;
1643         }
1644
1645         /* Initialize the command */
1646         ctlx->outbuf.rmemreq.type = cpu_to_le16(HFA384x_USB_RMEMREQ);
1647         ctlx->outbuf.rmemreq.frmlen =
1648             cpu_to_le16(sizeof(ctlx->outbuf.rmemreq.offset) +
1649                             sizeof(ctlx->outbuf.rmemreq.page) + len);
1650         ctlx->outbuf.rmemreq.offset = cpu_to_le16(offset);
1651         ctlx->outbuf.rmemreq.page = cpu_to_le16(page);
1652
1653         ctlx->outbufsize = sizeof(ctlx->outbuf.rmemreq);
1654
1655         printk(KERN_DEBUG
1656                "type=0x%04x frmlen=%d offset=0x%04x page=0x%04x\n",
1657                ctlx->outbuf.rmemreq.type,
1658                ctlx->outbuf.rmemreq.frmlen,
1659                ctlx->outbuf.rmemreq.offset, ctlx->outbuf.rmemreq.page);
1660
1661         pr_debug("pktsize=%zd\n",
1662                ROUNDUP64(sizeof(ctlx->outbuf.rmemreq)));
1663
1664         ctlx->reapable = mode;
1665         ctlx->cmdcb = cmdcb;
1666         ctlx->usercb = usercb;
1667         ctlx->usercb_data = usercb_data;
1668
1669         result = hfa384x_usbctlx_submit(hw, ctlx);
1670         if (result != 0) {
1671                 kfree(ctlx);
1672         } else if (mode == DOWAIT) {
1673                 usbctlx_rmem_completor_t completor;
1674
1675                 result =
1676                     hfa384x_usbctlx_complete_sync(hw, ctlx,
1677                                                   init_rmem_completor
1678                                                   (&completor,
1679                                                    &ctlx->inbuf.rmemresp, data,
1680                                                    len));
1681         }
1682
1683 done:
1684         return result;
1685 }
1686
1687 /*----------------------------------------------------------------
1688 * hfa384x_dowmem
1689 *
1690 * Constructs a writemem CTLX and issues it.
1691 *
1692 * NOTE: Any changes to the 'post-submit' code in this function
1693 *       need to be carried over to hfa384x_cbwmem() since the handling
1694 *       is virtually identical.
1695 *
1696 * Arguments:
1697 *       hw              device structure
1698 *       mode            DOWAIT or DOASYNC
1699 *       page            MAC address space page (CMD format)
1700 *       offset          MAC address space offset
1701 *       data            Ptr to data buffer containing write data
1702 *       len             Length of the data to read (max == 2048)
1703 *       cmdcb           command callback for async calls, NULL for DOWAIT calls
1704 *       usercb          user callback for async calls, NULL for DOWAIT calls
1705 *       usercb_data     user supplied data pointer for async calls.
1706 *
1707 * Returns:
1708 *       0               success
1709 *       -ETIMEDOUT      timed out waiting for register ready or
1710 *                       command completion
1711 *       >0              command indicated error, Status and Resp0-2 are
1712 *                       in hw structure.
1713 *
1714 * Side effects:
1715 *
1716 * Call context:
1717 *       interrupt (DOWAIT)
1718 *       process (DOWAIT or DOASYNC)
1719 ----------------------------------------------------------------*/
1720 static int
1721 hfa384x_dowmem(hfa384x_t *hw,
1722                CMD_MODE mode,
1723                u16 page,
1724                u16 offset,
1725                void *data,
1726                unsigned int len,
1727                ctlx_cmdcb_t cmdcb, ctlx_usercb_t usercb, void *usercb_data)
1728 {
1729         int result;
1730         hfa384x_usbctlx_t *ctlx;
1731
1732         pr_debug("page=0x%04x offset=0x%04x len=%d\n",
1733                page, offset, len);
1734
1735         ctlx = usbctlx_alloc();
1736         if (ctlx == NULL) {
1737                 result = -ENOMEM;
1738                 goto done;
1739         }
1740
1741         /* Initialize the command */
1742         ctlx->outbuf.wmemreq.type = cpu_to_le16(HFA384x_USB_WMEMREQ);
1743         ctlx->outbuf.wmemreq.frmlen =
1744             cpu_to_le16(sizeof(ctlx->outbuf.wmemreq.offset) +
1745                             sizeof(ctlx->outbuf.wmemreq.page) + len);
1746         ctlx->outbuf.wmemreq.offset = cpu_to_le16(offset);
1747         ctlx->outbuf.wmemreq.page = cpu_to_le16(page);
1748         memcpy(ctlx->outbuf.wmemreq.data, data, len);
1749
1750         ctlx->outbufsize = sizeof(ctlx->outbuf.wmemreq.type) +
1751             sizeof(ctlx->outbuf.wmemreq.frmlen) +
1752             sizeof(ctlx->outbuf.wmemreq.offset) +
1753             sizeof(ctlx->outbuf.wmemreq.page) + len;
1754
1755         ctlx->reapable = mode;
1756         ctlx->cmdcb = cmdcb;
1757         ctlx->usercb = usercb;
1758         ctlx->usercb_data = usercb_data;
1759
1760         result = hfa384x_usbctlx_submit(hw, ctlx);
1761         if (result != 0) {
1762                 kfree(ctlx);
1763         } else if (mode == DOWAIT) {
1764                 usbctlx_wmem_completor_t completor;
1765                 hfa384x_cmdresult_t wmemresult;
1766
1767                 result = hfa384x_usbctlx_complete_sync(hw,
1768                                                        ctlx,
1769                                                        init_wmem_completor
1770                                                        (&completor,
1771                                                         &ctlx->inbuf.wmemresp,
1772                                                         &wmemresult));
1773         }
1774
1775 done:
1776         return result;
1777 }
1778
1779 /*----------------------------------------------------------------
1780 * hfa384x_drvr_commtallies
1781 *
1782 * Send a commtallies inquiry to the MAC.  Note that this is an async
1783 * call that will result in an info frame arriving sometime later.
1784 *
1785 * Arguments:
1786 *       hw              device structure
1787 *
1788 * Returns:
1789 *       zero            success.
1790 *
1791 * Side effects:
1792 *
1793 * Call context:
1794 *       process
1795 ----------------------------------------------------------------*/
1796 int hfa384x_drvr_commtallies(hfa384x_t *hw)
1797 {
1798         hfa384x_metacmd_t cmd;
1799
1800         cmd.cmd = HFA384x_CMDCODE_INQ;
1801         cmd.parm0 = HFA384x_IT_COMMTALLIES;
1802         cmd.parm1 = 0;
1803         cmd.parm2 = 0;
1804
1805         hfa384x_docmd_async(hw, &cmd, NULL, NULL, NULL);
1806
1807         return 0;
1808 }
1809
1810 /*----------------------------------------------------------------
1811 * hfa384x_drvr_disable
1812 *
1813 * Issues the disable command to stop communications on one of
1814 * the MACs 'ports'.  Only macport 0 is valid  for stations.
1815 * APs may also disable macports 1-6.  Only ports that have been
1816 * previously enabled may be disabled.
1817 *
1818 * Arguments:
1819 *       hw              device structure
1820 *       macport         MAC port number (host order)
1821 *
1822 * Returns:
1823 *       0               success
1824 *       >0              f/w reported failure - f/w status code
1825 *       <0              driver reported error (timeout|bad arg)
1826 *
1827 * Side effects:
1828 *
1829 * Call context:
1830 *       process
1831 ----------------------------------------------------------------*/
1832 int hfa384x_drvr_disable(hfa384x_t *hw, u16 macport)
1833 {
1834         int result = 0;
1835
1836         if ((!hw->isap && macport != 0) ||
1837             (hw->isap && !(macport <= HFA384x_PORTID_MAX)) ||
1838             !(hw->port_enabled[macport])) {
1839                 result = -EINVAL;
1840         } else {
1841                 result = hfa384x_cmd_disable(hw, macport);
1842                 if (result == 0)
1843                         hw->port_enabled[macport] = 0;
1844         }
1845         return result;
1846 }
1847
1848 /*----------------------------------------------------------------
1849 * hfa384x_drvr_enable
1850 *
1851 * Issues the enable command to enable communications on one of
1852 * the MACs 'ports'.  Only macport 0 is valid  for stations.
1853 * APs may also enable macports 1-6.  Only ports that are currently
1854 * disabled may be enabled.
1855 *
1856 * Arguments:
1857 *       hw              device structure
1858 *       macport         MAC port number
1859 *
1860 * Returns:
1861 *       0               success
1862 *       >0              f/w reported failure - f/w status code
1863 *       <0              driver reported error (timeout|bad arg)
1864 *
1865 * Side effects:
1866 *
1867 * Call context:
1868 *       process
1869 ----------------------------------------------------------------*/
1870 int hfa384x_drvr_enable(hfa384x_t *hw, u16 macport)
1871 {
1872         int result = 0;
1873
1874         if ((!hw->isap && macport != 0) ||
1875             (hw->isap && !(macport <= HFA384x_PORTID_MAX)) ||
1876             (hw->port_enabled[macport])) {
1877                 result = -EINVAL;
1878         } else {
1879                 result = hfa384x_cmd_enable(hw, macport);
1880                 if (result == 0)
1881                         hw->port_enabled[macport] = 1;
1882         }
1883         return result;
1884 }
1885
1886 /*----------------------------------------------------------------
1887 * hfa384x_drvr_flashdl_enable
1888 *
1889 * Begins the flash download state.  Checks to see that we're not
1890 * already in a download state and that a port isn't enabled.
1891 * Sets the download state and retrieves the flash download
1892 * buffer location, buffer size, and timeout length.
1893 *
1894 * Arguments:
1895 *       hw              device structure
1896 *
1897 * Returns:
1898 *       0               success
1899 *       >0              f/w reported error - f/w status code
1900 *       <0              driver reported error
1901 *
1902 * Side effects:
1903 *
1904 * Call context:
1905 *       process
1906 ----------------------------------------------------------------*/
1907 int hfa384x_drvr_flashdl_enable(hfa384x_t *hw)
1908 {
1909         int result = 0;
1910         int i;
1911
1912         /* Check that a port isn't active */
1913         for (i = 0; i < HFA384x_PORTID_MAX; i++) {
1914                 if (hw->port_enabled[i]) {
1915                         pr_debug("called when port enabled.\n");
1916                         return -EINVAL;
1917                 }
1918         }
1919
1920         /* Check that we're not already in a download state */
1921         if (hw->dlstate != HFA384x_DLSTATE_DISABLED)
1922                 return -EINVAL;
1923
1924         /* Retrieve the buffer loc&size and timeout */
1925         if ((result = hfa384x_drvr_getconfig(hw, HFA384x_RID_DOWNLOADBUFFER,
1926                                              &(hw->bufinfo),
1927                                              sizeof(hw->bufinfo)))) {
1928                 return result;
1929         }
1930         hw->bufinfo.page = le16_to_cpu(hw->bufinfo.page);
1931         hw->bufinfo.offset = le16_to_cpu(hw->bufinfo.offset);
1932         hw->bufinfo.len = le16_to_cpu(hw->bufinfo.len);
1933         if ((result = hfa384x_drvr_getconfig16(hw, HFA384x_RID_MAXLOADTIME,
1934                                                &(hw->dltimeout)))) {
1935                 return result;
1936         }
1937         hw->dltimeout = le16_to_cpu(hw->dltimeout);
1938
1939         pr_debug("flashdl_enable\n");
1940
1941         hw->dlstate = HFA384x_DLSTATE_FLASHENABLED;
1942
1943         return result;
1944 }
1945
1946 /*----------------------------------------------------------------
1947 * hfa384x_drvr_flashdl_disable
1948 *
1949 * Ends the flash download state.  Note that this will cause the MAC
1950 * firmware to restart.
1951 *
1952 * Arguments:
1953 *       hw              device structure
1954 *
1955 * Returns:
1956 *       0               success
1957 *       >0              f/w reported error - f/w status code
1958 *       <0              driver reported error
1959 *
1960 * Side effects:
1961 *
1962 * Call context:
1963 *       process
1964 ----------------------------------------------------------------*/
1965 int hfa384x_drvr_flashdl_disable(hfa384x_t *hw)
1966 {
1967         /* Check that we're already in the download state */
1968         if (hw->dlstate != HFA384x_DLSTATE_FLASHENABLED)
1969                 return -EINVAL;
1970
1971         pr_debug("flashdl_enable\n");
1972
1973         /* There isn't much we can do at this point, so I don't */
1974         /*  bother  w/ the return value */
1975         hfa384x_cmd_download(hw, HFA384x_PROGMODE_DISABLE, 0, 0, 0);
1976         hw->dlstate = HFA384x_DLSTATE_DISABLED;
1977
1978         return 0;
1979 }
1980
1981 /*----------------------------------------------------------------
1982 * hfa384x_drvr_flashdl_write
1983 *
1984 * Performs a FLASH download of a chunk of data. First checks to see
1985 * that we're in the FLASH download state, then sets the download
1986 * mode, uses the aux functions to 1) copy the data to the flash
1987 * buffer, 2) sets the download 'write flash' mode, 3) readback and
1988 * compare.  Lather rinse, repeat as many times an necessary to get
1989 * all the given data into flash.
1990 * When all data has been written using this function (possibly
1991 * repeatedly), call drvr_flashdl_disable() to end the download state
1992 * and restart the MAC.
1993 *
1994 * Arguments:
1995 *       hw              device structure
1996 *       daddr           Card address to write to. (host order)
1997 *       buf             Ptr to data to write.
1998 *       len             Length of data (host order).
1999 *
2000 * Returns:
2001 *       0               success
2002 *       >0              f/w reported error - f/w status code
2003 *       <0              driver reported error
2004 *
2005 * Side effects:
2006 *
2007 * Call context:
2008 *       process
2009 ----------------------------------------------------------------*/
2010 int hfa384x_drvr_flashdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
2011 {
2012         int result = 0;
2013         u32 dlbufaddr;
2014         int nburns;
2015         u32 burnlen;
2016         u32 burndaddr;
2017         u16 burnlo;
2018         u16 burnhi;
2019         int nwrites;
2020         u8 *writebuf;
2021         u16 writepage;
2022         u16 writeoffset;
2023         u32 writelen;
2024         int i;
2025         int j;
2026
2027         pr_debug("daddr=0x%08x len=%d\n", daddr, len);
2028
2029         /* Check that we're in the flash download state */
2030         if (hw->dlstate != HFA384x_DLSTATE_FLASHENABLED)
2031                 return -EINVAL;
2032
2033         printk(KERN_INFO "Download %d bytes to flash @0x%06x\n", len, daddr);
2034
2035         /* Convert to flat address for arithmetic */
2036         /* NOTE: dlbuffer RID stores the address in AUX format */
2037         dlbufaddr =
2038             HFA384x_ADDR_AUX_MKFLAT(hw->bufinfo.page, hw->bufinfo.offset);
2039         printk(KERN_DEBUG
2040                "dlbuf.page=0x%04x dlbuf.offset=0x%04x dlbufaddr=0x%08x\n",
2041                hw->bufinfo.page, hw->bufinfo.offset, dlbufaddr);
2042
2043 #if 0
2044         printk(KERN_WARNING "dlbuf@0x%06lx len=%d to=%d\n", dlbufaddr,
2045                hw->bufinfo.len, hw->dltimeout);
2046 #endif
2047         /* Calculations to determine how many fills of the dlbuffer to do
2048          * and how many USB wmemreq's to do for each fill.  At this point
2049          * in time, the dlbuffer size and the wmemreq size are the same.
2050          * Therefore, nwrites should always be 1.  The extra complexity
2051          * here is a hedge against future changes.
2052          */
2053
2054         /* Figure out how many times to do the flash programming */
2055         nburns = len / hw->bufinfo.len;
2056         nburns += (len % hw->bufinfo.len) ? 1 : 0;
2057
2058         /* For each flash program cycle, how many USB wmemreq's are needed? */
2059         nwrites = hw->bufinfo.len / HFA384x_USB_RWMEM_MAXLEN;
2060         nwrites += (hw->bufinfo.len % HFA384x_USB_RWMEM_MAXLEN) ? 1 : 0;
2061
2062         /* For each burn */
2063         for (i = 0; i < nburns; i++) {
2064                 /* Get the dest address and len */
2065                 burnlen = (len - (hw->bufinfo.len * i)) > hw->bufinfo.len ?
2066                     hw->bufinfo.len : (len - (hw->bufinfo.len * i));
2067                 burndaddr = daddr + (hw->bufinfo.len * i);
2068                 burnlo = HFA384x_ADDR_CMD_MKOFF(burndaddr);
2069                 burnhi = HFA384x_ADDR_CMD_MKPAGE(burndaddr);
2070
2071                 printk(KERN_INFO "Writing %d bytes to flash @0x%06x\n",
2072                        burnlen, burndaddr);
2073
2074                 /* Set the download mode */
2075                 result = hfa384x_cmd_download(hw, HFA384x_PROGMODE_NV,
2076                                               burnlo, burnhi, burnlen);
2077                 if (result) {
2078                         printk(KERN_ERR "download(NV,lo=%x,hi=%x,len=%x) "
2079                                "cmd failed, result=%d. Aborting d/l\n",
2080                                burnlo, burnhi, burnlen, result);
2081                         goto exit_proc;
2082                 }
2083
2084                 /* copy the data to the flash download buffer */
2085                 for (j = 0; j < nwrites; j++) {
2086                         writebuf = buf +
2087                             (i * hw->bufinfo.len) +
2088                             (j * HFA384x_USB_RWMEM_MAXLEN);
2089
2090                         writepage = HFA384x_ADDR_CMD_MKPAGE(dlbufaddr +
2091                                                             (j *
2092                                                              HFA384x_USB_RWMEM_MAXLEN));
2093                         writeoffset =
2094                             HFA384x_ADDR_CMD_MKOFF(dlbufaddr +
2095                                                    (j *
2096                                                     HFA384x_USB_RWMEM_MAXLEN));
2097
2098                         writelen = burnlen - (j * HFA384x_USB_RWMEM_MAXLEN);
2099                         writelen = writelen > HFA384x_USB_RWMEM_MAXLEN ?
2100                             HFA384x_USB_RWMEM_MAXLEN : writelen;
2101
2102                         result = hfa384x_dowmem_wait(hw,
2103                                                      writepage,
2104                                                      writeoffset,
2105                                                      writebuf, writelen);
2106                 }
2107
2108                 /* set the download 'write flash' mode */
2109                 result = hfa384x_cmd_download(hw,
2110                                               HFA384x_PROGMODE_NVWRITE,
2111                                               0, 0, 0);
2112                 if (result) {
2113                         printk(KERN_ERR
2114                                "download(NVWRITE,lo=%x,hi=%x,len=%x) "
2115                                "cmd failed, result=%d. Aborting d/l\n",
2116                                burnlo, burnhi, burnlen, result);
2117                         goto exit_proc;
2118                 }
2119
2120                 /* TODO: We really should do a readback and compare. */
2121         }
2122
2123 exit_proc:
2124
2125         /* Leave the firmware in the 'post-prog' mode.  flashdl_disable will */
2126         /*  actually disable programming mode.  Remember, that will cause the */
2127         /*  the firmware to effectively reset itself. */
2128
2129         return result;
2130 }
2131
2132 /*----------------------------------------------------------------
2133 * hfa384x_drvr_getconfig
2134 *
2135 * Performs the sequence necessary to read a config/info item.
2136 *
2137 * Arguments:
2138 *       hw              device structure
2139 *       rid             config/info record id (host order)
2140 *       buf             host side record buffer.  Upon return it will
2141 *                       contain the body portion of the record (minus the
2142 *                       RID and len).
2143 *       len             buffer length (in bytes, should match record length)
2144 *
2145 * Returns:
2146 *       0               success
2147 *       >0              f/w reported error - f/w status code
2148 *       <0              driver reported error
2149 *       -ENODATA        length mismatch between argument and retrieved
2150 *                       record.
2151 *
2152 * Side effects:
2153 *
2154 * Call context:
2155 *       process
2156 ----------------------------------------------------------------*/
2157 int hfa384x_drvr_getconfig(hfa384x_t *hw, u16 rid, void *buf, u16 len)
2158 {
2159         int result;
2160
2161         result = hfa384x_dorrid_wait(hw, rid, buf, len);
2162
2163         return result;
2164 }
2165
2166 /*----------------------------------------------------------------
2167  * hfa384x_drvr_getconfig_async
2168  *
2169  * Performs the sequence necessary to perform an async read of
2170  * of a config/info item.
2171  *
2172  * Arguments:
2173  *       hw              device structure
2174  *       rid             config/info record id (host order)
2175  *       buf             host side record buffer.  Upon return it will
2176  *                       contain the body portion of the record (minus the
2177  *                       RID and len).
2178  *       len             buffer length (in bytes, should match record length)
2179  *       cbfn            caller supplied callback, called when the command
2180  *                       is done (successful or not).
2181  *       cbfndata        pointer to some caller supplied data that will be
2182  *                       passed in as an argument to the cbfn.
2183  *
2184  * Returns:
2185  *       nothing         the cbfn gets a status argument identifying if
2186  *                       any errors occur.
2187  * Side effects:
2188  *       Queues an hfa384x_usbcmd_t for subsequent execution.
2189  *
2190  * Call context:
2191  *       Any
2192  ----------------------------------------------------------------*/
2193 int
2194 hfa384x_drvr_getconfig_async(hfa384x_t *hw,
2195                              u16 rid, ctlx_usercb_t usercb, void *usercb_data)
2196 {
2197         return hfa384x_dorrid_async(hw, rid, NULL, 0,
2198                                     hfa384x_cb_rrid, usercb, usercb_data);
2199 }
2200
2201 /*----------------------------------------------------------------
2202  * hfa384x_drvr_setconfig_async
2203  *
2204  * Performs the sequence necessary to write a config/info item.
2205  *
2206  * Arguments:
2207  *       hw              device structure
2208  *       rid             config/info record id (in host order)
2209  *       buf             host side record buffer
2210  *       len             buffer length (in bytes)
2211  *       usercb          completion callback
2212  *       usercb_data     completion callback argument
2213  *
2214  * Returns:
2215  *       0               success
2216  *       >0              f/w reported error - f/w status code
2217  *       <0              driver reported error
2218  *
2219  * Side effects:
2220  *
2221  * Call context:
2222  *       process
2223  ----------------------------------------------------------------*/
2224 int
2225 hfa384x_drvr_setconfig_async(hfa384x_t *hw,
2226                              u16 rid,
2227                              void *buf,
2228                              u16 len, ctlx_usercb_t usercb, void *usercb_data)
2229 {
2230         return hfa384x_dowrid_async(hw, rid, buf, len,
2231                                     hfa384x_cb_status, usercb, usercb_data);
2232 }
2233
2234 /*----------------------------------------------------------------
2235 * hfa384x_drvr_ramdl_disable
2236 *
2237 * Ends the ram download state.
2238 *
2239 * Arguments:
2240 *       hw              device structure
2241 *
2242 * Returns:
2243 *       0               success
2244 *       >0              f/w reported error - f/w status code
2245 *       <0              driver reported error
2246 *
2247 * Side effects:
2248 *
2249 * Call context:
2250 *       process
2251 ----------------------------------------------------------------*/
2252 int hfa384x_drvr_ramdl_disable(hfa384x_t *hw)
2253 {
2254         /* Check that we're already in the download state */
2255         if (hw->dlstate != HFA384x_DLSTATE_RAMENABLED)
2256                 return -EINVAL;
2257
2258         pr_debug("ramdl_disable()\n");
2259
2260         /* There isn't much we can do at this point, so I don't */
2261         /*  bother  w/ the return value */
2262         hfa384x_cmd_download(hw, HFA384x_PROGMODE_DISABLE, 0, 0, 0);
2263         hw->dlstate = HFA384x_DLSTATE_DISABLED;
2264
2265         return 0;
2266 }
2267
2268 /*----------------------------------------------------------------
2269 * hfa384x_drvr_ramdl_enable
2270 *
2271 * Begins the ram download state.  Checks to see that we're not
2272 * already in a download state and that a port isn't enabled.
2273 * Sets the download state and calls cmd_download with the
2274 * ENABLE_VOLATILE subcommand and the exeaddr argument.
2275 *
2276 * Arguments:
2277 *       hw              device structure
2278 *       exeaddr         the card execution address that will be
2279 *                       jumped to when ramdl_disable() is called
2280 *                       (host order).
2281 *
2282 * Returns:
2283 *       0               success
2284 *       >0              f/w reported error - f/w status code
2285 *       <0              driver reported error
2286 *
2287 * Side effects:
2288 *
2289 * Call context:
2290 *       process
2291 ----------------------------------------------------------------*/
2292 int hfa384x_drvr_ramdl_enable(hfa384x_t *hw, u32 exeaddr)
2293 {
2294         int result = 0;
2295         u16 lowaddr;
2296         u16 hiaddr;
2297         int i;
2298
2299         /* Check that a port isn't active */
2300         for (i = 0; i < HFA384x_PORTID_MAX; i++) {
2301                 if (hw->port_enabled[i]) {
2302                         printk(KERN_ERR
2303                                "Can't download with a macport enabled.\n");
2304                         return -EINVAL;
2305                 }
2306         }
2307
2308         /* Check that we're not already in a download state */
2309         if (hw->dlstate != HFA384x_DLSTATE_DISABLED) {
2310                 printk(KERN_ERR "Download state not disabled.\n");
2311                 return -EINVAL;
2312         }
2313
2314         pr_debug("ramdl_enable, exeaddr=0x%08x\n", exeaddr);
2315
2316         /* Call the download(1,addr) function */
2317         lowaddr = HFA384x_ADDR_CMD_MKOFF(exeaddr);
2318         hiaddr = HFA384x_ADDR_CMD_MKPAGE(exeaddr);
2319
2320         result = hfa384x_cmd_download(hw, HFA384x_PROGMODE_RAM,
2321                                       lowaddr, hiaddr, 0);
2322
2323         if (result == 0) {
2324                 /* Set the download state */
2325                 hw->dlstate = HFA384x_DLSTATE_RAMENABLED;
2326         } else {
2327                 printk(KERN_DEBUG
2328                        "cmd_download(0x%04x, 0x%04x) failed, result=%d.\n",
2329                        lowaddr, hiaddr, result);
2330         }
2331
2332         return result;
2333 }
2334
2335 /*----------------------------------------------------------------
2336 * hfa384x_drvr_ramdl_write
2337 *
2338 * Performs a RAM download of a chunk of data. First checks to see
2339 * that we're in the RAM download state, then uses the [read|write]mem USB
2340 * commands to 1) copy the data, 2) readback and compare.  The download
2341 * state is unaffected.  When all data has been written using
2342 * this function, call drvr_ramdl_disable() to end the download state
2343 * and restart the MAC.
2344 *
2345 * Arguments:
2346 *       hw              device structure
2347 *       daddr           Card address to write to. (host order)
2348 *       buf             Ptr to data to write.
2349 *       len             Length of data (host order).
2350 *
2351 * Returns:
2352 *       0               success
2353 *       >0              f/w reported error - f/w status code
2354 *       <0              driver reported error
2355 *
2356 * Side effects:
2357 *
2358 * Call context:
2359 *       process
2360 ----------------------------------------------------------------*/
2361 int hfa384x_drvr_ramdl_write(hfa384x_t *hw, u32 daddr, void *buf, u32 len)
2362 {
2363         int result = 0;
2364         int nwrites;
2365         u8 *data = buf;
2366         int i;
2367         u32 curraddr;
2368         u16 currpage;
2369         u16 curroffset;
2370         u16 currlen;
2371
2372         /* Check that we're in the ram download state */
2373         if (hw->dlstate != HFA384x_DLSTATE_RAMENABLED)
2374                 return -EINVAL;
2375
2376         printk(KERN_INFO "Writing %d bytes to ram @0x%06x\n", len, daddr);
2377
2378         /* How many dowmem calls?  */
2379         nwrites = len / HFA384x_USB_RWMEM_MAXLEN;
2380         nwrites += len % HFA384x_USB_RWMEM_MAXLEN ? 1 : 0;
2381
2382         /* Do blocking wmem's */
2383         for (i = 0; i < nwrites; i++) {
2384                 /* make address args */
2385                 curraddr = daddr + (i * HFA384x_USB_RWMEM_MAXLEN);
2386                 currpage = HFA384x_ADDR_CMD_MKPAGE(curraddr);
2387                 curroffset = HFA384x_ADDR_CMD_MKOFF(curraddr);
2388                 currlen = len - (i * HFA384x_USB_RWMEM_MAXLEN);
2389                 if (currlen > HFA384x_USB_RWMEM_MAXLEN)
2390                         currlen = HFA384x_USB_RWMEM_MAXLEN;
2391
2392                 /* Do blocking ctlx */
2393                 result = hfa384x_dowmem_wait(hw,
2394                                              currpage,
2395                                              curroffset,
2396                                              data +
2397                                              (i * HFA384x_USB_RWMEM_MAXLEN),
2398                                              currlen);
2399
2400                 if (result)
2401                         break;
2402
2403                 /* TODO: We really should have a readback. */
2404         }
2405
2406         return result;
2407 }
2408
2409 /*----------------------------------------------------------------
2410 * hfa384x_drvr_readpda
2411 *
2412 * Performs the sequence to read the PDA space.  Note there is no
2413 * drvr_writepda() function.  Writing a PDA is
2414 * generally implemented by a calling component via calls to
2415 * cmd_download and writing to the flash download buffer via the
2416 * aux regs.
2417 *
2418 * Arguments:
2419 *       hw              device structure
2420 *       buf             buffer to store PDA in
2421 *       len             buffer length
2422 *
2423 * Returns:
2424 *       0               success
2425 *       >0              f/w reported error - f/w status code
2426 *       <0              driver reported error
2427 *       -ETIMEOUT       timout waiting for the cmd regs to become
2428 *                       available, or waiting for the control reg
2429 *                       to indicate the Aux port is enabled.
2430 *       -ENODATA        the buffer does NOT contain a valid PDA.
2431 *                       Either the card PDA is bad, or the auxdata
2432 *                       reads are giving us garbage.
2433
2434 *
2435 * Side effects:
2436 *
2437 * Call context:
2438 *       process or non-card interrupt.
2439 ----------------------------------------------------------------*/
2440 int hfa384x_drvr_readpda(hfa384x_t *hw, void *buf, unsigned int len)
2441 {
2442         int result = 0;
2443         u16 *pda = buf;
2444         int pdaok = 0;
2445         int morepdrs = 1;
2446         int currpdr = 0;        /* word offset of the current pdr */
2447         size_t i;
2448         u16 pdrlen;             /* pdr length in bytes, host order */
2449         u16 pdrcode;            /* pdr code, host order */
2450         u16 currpage;
2451         u16 curroffset;
2452         struct pdaloc {
2453                 u32 cardaddr;
2454                 u16 auxctl;
2455         } pdaloc[] = {
2456                 {
2457                 HFA3842_PDA_BASE, 0}, {
2458                 HFA3841_PDA_BASE, 0}, {
2459                 HFA3841_PDA_BOGUS_BASE, 0}
2460         };
2461
2462         /* Read the pda from each known address.  */
2463         for (i = 0; i < ARRAY_SIZE(pdaloc); i++) {
2464                 /* Make address */
2465                 currpage = HFA384x_ADDR_CMD_MKPAGE(pdaloc[i].cardaddr);
2466                 curroffset = HFA384x_ADDR_CMD_MKOFF(pdaloc[i].cardaddr);
2467
2468                 result = hfa384x_dormem_wait(hw, currpage, curroffset, buf, len);       /* units of bytes */
2469
2470                 if (result) {
2471                         printk(KERN_WARNING
2472                                "Read from index %zd failed, continuing\n", i);
2473                         continue;
2474                 }
2475
2476                 /* Test for garbage */
2477                 pdaok = 1;      /* initially assume good */
2478                 morepdrs = 1;
2479                 while (pdaok && morepdrs) {
2480                         pdrlen = le16_to_cpu(pda[currpdr]) * 2;
2481                         pdrcode = le16_to_cpu(pda[currpdr + 1]);
2482                         /* Test the record length */
2483                         if (pdrlen > HFA384x_PDR_LEN_MAX || pdrlen == 0) {
2484                                 printk(KERN_ERR "pdrlen invalid=%d\n", pdrlen);
2485                                 pdaok = 0;
2486                                 break;
2487                         }
2488                         /* Test the code */
2489                         if (!hfa384x_isgood_pdrcode(pdrcode)) {
2490                                 printk(KERN_ERR "pdrcode invalid=%d\n",
2491                                        pdrcode);
2492                                 pdaok = 0;
2493                                 break;
2494                         }
2495                         /* Test for completion */
2496                         if (pdrcode == HFA384x_PDR_END_OF_PDA)
2497                                 morepdrs = 0;
2498
2499                         /* Move to the next pdr (if necessary) */
2500                         if (morepdrs) {
2501                                 /* note the access to pda[], need words here */
2502                                 currpdr += le16_to_cpu(pda[currpdr]) + 1;
2503                         }
2504                 }
2505                 if (pdaok) {
2506                         printk(KERN_INFO
2507                                "PDA Read from 0x%08x in %s space.\n",
2508                                pdaloc[i].cardaddr,
2509                                pdaloc[i].auxctl == 0 ? "EXTDS" :
2510                                pdaloc[i].auxctl == 1 ? "NV" :
2511                                pdaloc[i].auxctl == 2 ? "PHY" :
2512                                pdaloc[i].auxctl == 3 ? "ICSRAM" :
2513                                "<bogus auxctl>");
2514                         break;
2515                 }
2516         }
2517         result = pdaok ? 0 : -ENODATA;
2518
2519         if (result)
2520                 pr_debug("Failure: pda is not okay\n");
2521
2522         return result;
2523 }
2524
2525 /*----------------------------------------------------------------
2526 * hfa384x_drvr_setconfig
2527 *
2528 * Performs the sequence necessary to write a config/info item.
2529 *
2530 * Arguments:
2531 *       hw              device structure
2532 *       rid             config/info record id (in host order)
2533 *       buf             host side record buffer
2534 *       len             buffer length (in bytes)
2535 *
2536 * Returns:
2537 *       0               success
2538 *       >0              f/w reported error - f/w status code
2539 *       <0              driver reported error
2540 *
2541 * Side effects:
2542 *
2543 * Call context:
2544 *       process
2545 ----------------------------------------------------------------*/
2546 int hfa384x_drvr_setconfig(hfa384x_t *hw, u16 rid, void *buf, u16 len)
2547 {
2548         return hfa384x_dowrid_wait(hw, rid, buf, len);
2549 }
2550
2551 /*----------------------------------------------------------------
2552 * hfa384x_drvr_start
2553 *
2554 * Issues the MAC initialize command, sets up some data structures,
2555 * and enables the interrupts.  After this function completes, the
2556 * low-level stuff should be ready for any/all commands.
2557 *
2558 * Arguments:
2559 *       hw              device structure
2560 * Returns:
2561 *       0               success
2562 *       >0              f/w reported error - f/w status code
2563 *       <0              driver reported error
2564 *
2565 * Side effects:
2566 *
2567 * Call context:
2568 *       process
2569 ----------------------------------------------------------------*/
2570
2571 int hfa384x_drvr_start(hfa384x_t *hw)
2572 {
2573         int result, result1, result2;
2574         u16 status;
2575
2576         might_sleep();
2577
2578         /* Clear endpoint stalls - but only do this if the endpoint
2579          * is showing a stall status. Some prism2 cards seem to behave
2580          * badly if a clear_halt is called when the endpoint is already
2581          * ok
2582          */
2583         result =
2584             usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_in, &status);
2585         if (result < 0) {
2586                 printk(KERN_ERR "Cannot get bulk in endpoint status.\n");
2587                 goto done;
2588         }
2589         if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_in))
2590                 printk(KERN_ERR "Failed to reset bulk in endpoint.\n");
2591
2592         result =
2593             usb_get_status(hw->usb, USB_RECIP_ENDPOINT, hw->endp_out, &status);
2594         if (result < 0) {
2595                 printk(KERN_ERR "Cannot get bulk out endpoint status.\n");
2596                 goto done;
2597         }
2598         if ((status == 1) && usb_clear_halt(hw->usb, hw->endp_out))
2599                 printk(KERN_ERR "Failed to reset bulk out endpoint.\n");
2600
2601         /* Synchronous unlink, in case we're trying to restart the driver */
2602         usb_kill_urb(&hw->rx_urb);
2603
2604         /* Post the IN urb */
2605         result = submit_rx_urb(hw, GFP_KERNEL);
2606         if (result != 0) {
2607                 printk(KERN_ERR
2608                        "Fatal, failed to submit RX URB, result=%d\n", result);
2609                 goto done;
2610         }
2611
2612         /* Call initialize twice, with a 1 second sleep in between.
2613          * This is a nasty work-around since many prism2 cards seem to
2614          * need time to settle after an init from cold. The second
2615          * call to initialize in theory is not necessary - but we call
2616          * it anyway as a double insurance policy:
2617          * 1) If the first init should fail, the second may well succeed
2618          *    and the card can still be used
2619          * 2) It helps ensures all is well with the card after the first
2620          *    init and settle time.
2621          */
2622         result1 = hfa384x_cmd_initialize(hw);
2623         msleep(1000);
2624         result = result2 = hfa384x_cmd_initialize(hw);
2625         if (result1 != 0) {
2626                 if (result2 != 0) {
2627                         printk(KERN_ERR
2628                                "cmd_initialize() failed on two attempts, results %d and %d\n",
2629                                result1, result2);
2630                         usb_kill_urb(&hw->rx_urb);
2631                         goto done;
2632                 } else {
2633                         printk(KERN_DEBUG
2634                                "First cmd_initialize() failed (result %d),\n",
2635                                result1);
2636                         printk(KERN_DEBUG
2637                                "but second attempt succeeded. All should be ok\n");
2638                 }
2639         } else if (result2 != 0) {
2640                 printk(KERN_WARNING
2641                        "First cmd_initialize() succeeded, but second attempt failed (result=%d)\n",
2642                        result2);
2643                 printk(KERN_WARNING
2644                        "Most likely the card will be functional\n");
2645                 goto done;
2646         }
2647
2648         hw->state = HFA384x_STATE_RUNNING;
2649
2650 done:
2651         return result;
2652 }
2653
2654 /*----------------------------------------------------------------
2655 * hfa384x_drvr_stop
2656 *
2657 * Shuts down the MAC to the point where it is safe to unload the
2658 * driver.  Any subsystem that may be holding a data or function
2659 * ptr into the driver must be cleared/deinitialized.
2660 *
2661 * Arguments:
2662 *       hw              device structure
2663 * Returns:
2664 *       0               success
2665 *       >0              f/w reported error - f/w status code
2666 *       <0              driver reported error
2667 *
2668 * Side effects:
2669 *
2670 * Call context:
2671 *       process
2672 ----------------------------------------------------------------*/
2673 int hfa384x_drvr_stop(hfa384x_t *hw)
2674 {
2675         int result = 0;
2676         int i;
2677
2678         might_sleep();
2679
2680         /* There's no need for spinlocks here. The USB "disconnect"
2681          * function sets this "removed" flag and then calls us.
2682          */
2683         if (!hw->wlandev->hwremoved) {
2684                 /* Call initialize to leave the MAC in its 'reset' state */
2685                 hfa384x_cmd_initialize(hw);
2686
2687                 /* Cancel the rxurb */
2688                 usb_kill_urb(&hw->rx_urb);
2689         }
2690
2691         hw->link_status = HFA384x_LINK_NOTCONNECTED;
2692         hw->state = HFA384x_STATE_INIT;
2693
2694         del_timer_sync(&hw->commsqual_timer);
2695
2696         /* Clear all the port status */
2697         for (i = 0; i < HFA384x_NUMPORTS_MAX; i++)
2698                 hw->port_enabled[i] = 0;
2699
2700         return result;
2701 }
2702
2703 /*----------------------------------------------------------------
2704 * hfa384x_drvr_txframe
2705 *
2706 * Takes a frame from prism2sta and queues it for transmission.
2707 *
2708 * Arguments:
2709 *       hw              device structure
2710 *       skb             packet buffer struct.  Contains an 802.11
2711 *                       data frame.
2712 *       p80211_hdr      points to the 802.11 header for the packet.
2713 * Returns:
2714 *       0               Success and more buffs available
2715 *       1               Success but no more buffs
2716 *       2               Allocation failure
2717 *       4               Buffer full or queue busy
2718 *
2719 * Side effects:
2720 *
2721 * Call context:
2722 *       interrupt
2723 ----------------------------------------------------------------*/
2724 int hfa384x_drvr_txframe(hfa384x_t *hw, struct sk_buff *skb,
2725                          p80211_hdr_t *p80211_hdr,
2726                          p80211_metawep_t *p80211_wep)
2727 {
2728         int usbpktlen = sizeof(hfa384x_tx_frame_t);
2729         int result;
2730         int ret;
2731         char *ptr;
2732
2733         if (hw->tx_urb.status == -EINPROGRESS) {
2734                 printk(KERN_WARNING "TX URB already in use\n");
2735                 result = 3;
2736                 goto exit;
2737         }
2738
2739         /* Build Tx frame structure */
2740         /* Set up the control field */
2741         memset(&hw->txbuff.txfrm.desc, 0, sizeof(hw->txbuff.txfrm.desc));
2742
2743         /* Setup the usb type field */
2744         hw->txbuff.type = cpu_to_le16(HFA384x_USB_TXFRM);
2745
2746         /* Set up the sw_support field to identify this frame */
2747         hw->txbuff.txfrm.desc.sw_support = 0x0123;
2748
2749 /* Tx complete and Tx exception disable per dleach.  Might be causing
2750  * buf depletion
2751  */
2752 /* #define DOEXC  SLP -- doboth breaks horribly under load, doexc less so. */
2753 #if defined(DOBOTH)
2754         hw->txbuff.txfrm.desc.tx_control =
2755             HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) |
2756             HFA384x_TX_TXEX_SET(1) | HFA384x_TX_TXOK_SET(1);
2757 #elif defined(DOEXC)
2758         hw->txbuff.txfrm.desc.tx_control =
2759             HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) |
2760             HFA384x_TX_TXEX_SET(1) | HFA384x_TX_TXOK_SET(0);
2761 #else
2762         hw->txbuff.txfrm.desc.tx_control =
2763             HFA384x_TX_MACPORT_SET(0) | HFA384x_TX_STRUCTYPE_SET(1) |
2764             HFA384x_TX_TXEX_SET(0) | HFA384x_TX_TXOK_SET(0);
2765 #endif
2766         hw->txbuff.txfrm.desc.tx_control =
2767             cpu_to_le16(hw->txbuff.txfrm.desc.tx_control);
2768
2769         /* copy the header over to the txdesc */
2770         memcpy(&(hw->txbuff.txfrm.desc.frame_control), p80211_hdr,
2771                sizeof(p80211_hdr_t));
2772
2773         /* if we're using host WEP, increase size by IV+ICV */
2774         if (p80211_wep->data) {
2775                 hw->txbuff.txfrm.desc.data_len = cpu_to_le16(skb->len + 8);
2776                 usbpktlen += 8;
2777         } else {
2778                 hw->txbuff.txfrm.desc.data_len = cpu_to_le16(skb->len);
2779         }
2780
2781         usbpktlen += skb->len;
2782
2783         /* copy over the WEP IV if we are using host WEP */
2784         ptr = hw->txbuff.txfrm.data;
2785         if (p80211_wep->data) {
2786                 memcpy(ptr, p80211_wep->iv, sizeof(p80211_wep->iv));
2787                 ptr += sizeof(p80211_wep->iv);
2788                 memcpy(ptr, p80211_wep->data, skb->len);
2789         } else {
2790                 memcpy(ptr, skb->data, skb->len);
2791         }
2792         /* copy over the packet data */
2793         ptr += skb->len;
2794
2795         /* copy over the WEP ICV if we are using host WEP */
2796         if (p80211_wep->data)
2797                 memcpy(ptr, p80211_wep->icv, sizeof(p80211_wep->icv));
2798
2799         /* Send the USB packet */
2800         usb_fill_bulk_urb(&(hw->tx_urb), hw->usb,
2801                           hw->endp_out,
2802                           &(hw->txbuff), ROUNDUP64(usbpktlen),
2803                           hfa384x_usbout_callback, hw->wlandev);
2804         hw->tx_urb.transfer_flags |= USB_QUEUE_BULK;
2805
2806         result = 1;
2807         ret = submit_tx_urb(hw, &hw->tx_urb, GFP_ATOMIC);
2808         if (ret != 0) {
2809                 printk(KERN_ERR "submit_tx_urb() failed, error=%d\n", ret);
2810                 result = 3;
2811         }
2812
2813 exit:
2814         return result;
2815 }
2816
2817 void hfa384x_tx_timeout(wlandevice_t *wlandev)
2818 {
2819         hfa384x_t *hw = wlandev->priv;
2820         unsigned long flags;
2821
2822         spin_lock_irqsave(&hw->ctlxq.lock, flags);
2823
2824         if (!hw->wlandev->hwremoved &&
2825             /* Note the bitwise OR, not the logical OR. */
2826             (!test_and_set_bit(WORK_TX_HALT, &hw->usb_flags) |
2827              !test_and_set_bit(WORK_RX_HALT, &hw->usb_flags))) {
2828                 schedule_work(&hw->usb_work);
2829         }
2830
2831         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
2832 }
2833
2834 /*----------------------------------------------------------------
2835 * hfa384x_usbctlx_reaper_task
2836 *
2837 * Tasklet to delete dead CTLX objects
2838 *
2839 * Arguments:
2840 *       data    ptr to a hfa384x_t
2841 *
2842 * Returns:
2843 *
2844 * Call context:
2845 *       Interrupt
2846 ----------------------------------------------------------------*/
2847 static void hfa384x_usbctlx_reaper_task(unsigned long data)
2848 {
2849         hfa384x_t *hw = (hfa384x_t *) data;
2850         struct list_head *entry;
2851         struct list_head *temp;
2852         unsigned long flags;
2853
2854         spin_lock_irqsave(&hw->ctlxq.lock, flags);
2855
2856         /* This list is guaranteed to be empty if someone
2857          * has unplugged the adapter.
2858          */
2859         list_for_each_safe(entry, temp, &hw->ctlxq.reapable) {
2860                 hfa384x_usbctlx_t *ctlx;
2861
2862                 ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
2863                 list_del(&ctlx->list);
2864                 kfree(ctlx);
2865         }
2866
2867         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
2868
2869 }
2870
2871 /*----------------------------------------------------------------
2872 * hfa384x_usbctlx_completion_task
2873 *
2874 * Tasklet to call completion handlers for returned CTLXs
2875 *
2876 * Arguments:
2877 *       data    ptr to hfa384x_t
2878 *
2879 * Returns:
2880 *       Nothing
2881 *
2882 * Call context:
2883 *       Interrupt
2884 ----------------------------------------------------------------*/
2885 static void hfa384x_usbctlx_completion_task(unsigned long data)
2886 {
2887         hfa384x_t *hw = (hfa384x_t *) data;
2888         struct list_head *entry;
2889         struct list_head *temp;
2890         unsigned long flags;
2891
2892         int reap = 0;
2893
2894         spin_lock_irqsave(&hw->ctlxq.lock, flags);
2895
2896         /* This list is guaranteed to be empty if someone
2897          * has unplugged the adapter ...
2898          */
2899         list_for_each_safe(entry, temp, &hw->ctlxq.completing) {
2900                 hfa384x_usbctlx_t *ctlx;
2901
2902                 ctlx = list_entry(entry, hfa384x_usbctlx_t, list);
2903
2904                 /* Call the completion function that this
2905                  * command was assigned, assuming it has one.
2906                  */
2907                 if (ctlx->cmdcb != NULL) {
2908                         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
2909                         ctlx->cmdcb(hw, ctlx);
2910                         spin_lock_irqsave(&hw->ctlxq.lock, flags);
2911
2912                         /* Make sure we don't try and complete
2913                          * this CTLX more than once!
2914                          */
2915                         ctlx->cmdcb = NULL;
2916
2917                         /* Did someone yank the adapter out
2918                          * while our list was (briefly) unlocked?
2919                          */
2920                         if (hw->wlandev->hwremoved) {
2921                                 reap = 0;
2922                                 break;
2923                         }
2924                 }
2925
2926                 /*
2927                  * "Reapable" CTLXs are ones which don't have any
2928                  * threads waiting for them to die. Hence they must
2929                  * be delivered to The Reaper!
2930                  */
2931                 if (ctlx->reapable) {
2932                         /* Move the CTLX off the "completing" list (hopefully)
2933                          * on to the "reapable" list where the reaper task
2934                          * can find it. And "reapable" means that this CTLX
2935                          * isn't sitting on a wait-queue somewhere.
2936                          */
2937                         list_move_tail(&ctlx->list, &hw->ctlxq.reapable);
2938                         reap = 1;
2939                 }
2940
2941                 complete(&ctlx->done);
2942         }
2943         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
2944
2945         if (reap)
2946                 tasklet_schedule(&hw->reaper_bh);
2947 }
2948
2949 /*----------------------------------------------------------------
2950 * unlocked_usbctlx_cancel_async
2951 *
2952 * Mark the CTLX dead asynchronously, and ensure that the
2953 * next command on the queue is run afterwards.
2954 *
2955 * Arguments:
2956 *       hw      ptr to the hfa384x_t structure
2957 *       ctlx    ptr to a CTLX structure
2958 *
2959 * Returns:
2960 *       0       the CTLX's URB is inactive
2961 * -EINPROGRESS  the URB is currently being unlinked
2962 *
2963 * Call context:
2964 *       Either process or interrupt, but presumably interrupt
2965 ----------------------------------------------------------------*/
2966 static int unlocked_usbctlx_cancel_async(hfa384x_t *hw,
2967                                          hfa384x_usbctlx_t *ctlx)
2968 {
2969         int ret;
2970
2971         /*
2972          * Try to delete the URB containing our request packet.
2973          * If we succeed, then its completion handler will be
2974          * called with a status of -ECONNRESET.
2975          */
2976         hw->ctlx_urb.transfer_flags |= URB_ASYNC_UNLINK;
2977         ret = usb_unlink_urb(&hw->ctlx_urb);
2978
2979         if (ret != -EINPROGRESS) {
2980                 /*
2981                  * The OUT URB had either already completed
2982                  * or was still in the pending queue, so the
2983                  * URB's completion function will not be called.
2984                  * We will have to complete the CTLX ourselves.
2985                  */
2986                 ctlx->state = CTLX_REQ_FAILED;
2987                 unlocked_usbctlx_complete(hw, ctlx);
2988                 ret = 0;
2989         }
2990
2991         return ret;
2992 }
2993
2994 /*----------------------------------------------------------------
2995 * unlocked_usbctlx_complete
2996 *
2997 * A CTLX has completed.  It may have been successful, it may not
2998 * have been. At this point, the CTLX should be quiescent.  The URBs
2999 * aren't active and the timers should have been stopped.
3000 *
3001 * The CTLX is migrated to the "completing" queue, and the completing
3002 * tasklet is scheduled.
3003 *
3004 * Arguments:
3005 *       hw              ptr to a hfa384x_t structure
3006 *       ctlx            ptr to a ctlx structure
3007 *
3008 * Returns:
3009 *       nothing
3010 *
3011 * Side effects:
3012 *
3013 * Call context:
3014 *       Either, assume interrupt
3015 ----------------------------------------------------------------*/
3016 static void unlocked_usbctlx_complete(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx)
3017 {
3018         /* Timers have been stopped, and ctlx should be in
3019          * a terminal state. Retire it from the "active"
3020          * queue.
3021          */
3022         list_move_tail(&ctlx->list, &hw->ctlxq.completing);
3023         tasklet_schedule(&hw->completion_bh);
3024
3025         switch (ctlx->state) {
3026         case CTLX_COMPLETE:
3027         case CTLX_REQ_FAILED:
3028                 /* This are the correct terminating states. */
3029                 break;
3030
3031         default:
3032                 printk(KERN_ERR "CTLX[%d] not in a terminating state(%s)\n",
3033                        le16_to_cpu(ctlx->outbuf.type),
3034                        ctlxstr(ctlx->state));
3035                 break;
3036         }                       /* switch */
3037 }
3038
3039 /*----------------------------------------------------------------
3040 * hfa384x_usbctlxq_run
3041 *
3042 * Checks to see if the head item is running.  If not, starts it.
3043 *
3044 * Arguments:
3045 *       hw      ptr to hfa384x_t
3046 *
3047 * Returns:
3048 *       nothing
3049 *
3050 * Side effects:
3051 *
3052 * Call context:
3053 *       any
3054 ----------------------------------------------------------------*/
3055 static void hfa384x_usbctlxq_run(hfa384x_t *hw)
3056 {
3057         unsigned long flags;
3058
3059         /* acquire lock */
3060         spin_lock_irqsave(&hw->ctlxq.lock, flags);
3061
3062         /* Only one active CTLX at any one time, because there's no
3063          * other (reliable) way to match the response URB to the
3064          * correct CTLX.
3065          *
3066          * Don't touch any of these CTLXs if the hardware
3067          * has been removed or the USB subsystem is stalled.
3068          */
3069         if (!list_empty(&hw->ctlxq.active) ||
3070             test_bit(WORK_TX_HALT, &hw->usb_flags) || hw->wlandev->hwremoved)
3071                 goto unlock;
3072
3073         while (!list_empty(&hw->ctlxq.pending)) {
3074                 hfa384x_usbctlx_t *head;
3075                 int result;
3076
3077                 /* This is the first pending command */
3078                 head = list_entry(hw->ctlxq.pending.next,
3079                                   hfa384x_usbctlx_t, list);
3080
3081                 /* We need to split this off to avoid a race condition */
3082                 list_move_tail(&head->list, &hw->ctlxq.active);
3083
3084                 /* Fill the out packet */
3085                 usb_fill_bulk_urb(&(hw->ctlx_urb), hw->usb,
3086                                   hw->endp_out,
3087                                   &(head->outbuf), ROUNDUP64(head->outbufsize),
3088                                   hfa384x_ctlxout_callback, hw);
3089                 hw->ctlx_urb.transfer_flags |= USB_QUEUE_BULK;
3090
3091                 /* Now submit the URB and update the CTLX's state
3092                  */
3093                 if ((result = SUBMIT_URB(&hw->ctlx_urb, GFP_ATOMIC)) == 0) {
3094                         /* This CTLX is now running on the active queue */
3095                         head->state = CTLX_REQ_SUBMITTED;
3096
3097                         /* Start the OUT wait timer */
3098                         hw->req_timer_done = 0;
3099                         hw->reqtimer.expires = jiffies + HZ;
3100                         add_timer(&hw->reqtimer);
3101
3102                         /* Start the IN wait timer */
3103                         hw->resp_timer_done = 0;
3104                         hw->resptimer.expires = jiffies + 2 * HZ;
3105                         add_timer(&hw->resptimer);
3106
3107                         break;
3108                 }
3109
3110                 if (result == -EPIPE) {
3111                         /* The OUT pipe needs resetting, so put
3112                          * this CTLX back in the "pending" queue
3113                          * and schedule a reset ...
3114                          */
3115                         printk(KERN_WARNING
3116                                "%s tx pipe stalled: requesting reset\n",
3117                                hw->wlandev->netdev->name);
3118                         list_move(&head->list, &hw->ctlxq.pending);
3119                         set_bit(WORK_TX_HALT, &hw->usb_flags);
3120                         schedule_work(&hw->usb_work);
3121                         break;
3122                 }
3123
3124                 if (result == -ESHUTDOWN) {
3125                         printk(KERN_WARNING "%s urb shutdown!\n",
3126                                hw->wlandev->netdev->name);
3127                         break;
3128                 }
3129
3130                 printk(KERN_ERR "Failed to submit CTLX[%d]: error=%d\n",
3131                        le16_to_cpu(head->outbuf.type), result);
3132                 unlocked_usbctlx_complete(hw, head);
3133         }                       /* while */
3134
3135 unlock:
3136         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3137 }
3138
3139 /*----------------------------------------------------------------
3140 * hfa384x_usbin_callback
3141 *
3142 * Callback for URBs on the BULKIN endpoint.
3143 *
3144 * Arguments:
3145 *       urb             ptr to the completed urb
3146 *
3147 * Returns:
3148 *       nothing
3149 *
3150 * Side effects:
3151 *
3152 * Call context:
3153 *       interrupt
3154 ----------------------------------------------------------------*/
3155 static void hfa384x_usbin_callback(struct urb *urb)
3156 {
3157         wlandevice_t *wlandev = urb->context;
3158         hfa384x_t *hw;
3159         hfa384x_usbin_t *usbin = (hfa384x_usbin_t *) urb->transfer_buffer;
3160         struct sk_buff *skb = NULL;
3161         int result;
3162         int urb_status;
3163         u16 type;
3164
3165         enum USBIN_ACTION {
3166                 HANDLE,
3167                 RESUBMIT,
3168                 ABORT
3169         } action;
3170
3171         if (!wlandev || !wlandev->netdev || wlandev->hwremoved)
3172                 goto exit;
3173
3174         hw = wlandev->priv;
3175         if (!hw)
3176                 goto exit;
3177
3178         skb = hw->rx_urb_skb;
3179         BUG_ON(!skb || (skb->data != urb->transfer_buffer));
3180
3181         hw->rx_urb_skb = NULL;
3182
3183         /* Check for error conditions within the URB */
3184         switch (urb->status) {
3185         case 0:
3186                 action = HANDLE;
3187
3188                 /* Check for short packet */
3189                 if (urb->actual_length == 0) {
3190                         ++(wlandev->linux_stats.rx_errors);
3191                         ++(wlandev->linux_stats.rx_length_errors);
3192                         action = RESUBMIT;
3193                 }
3194                 break;
3195
3196         case -EPIPE:
3197                 printk(KERN_WARNING "%s rx pipe stalled: requesting reset\n",
3198                        wlandev->netdev->name);
3199                 if (!test_and_set_bit(WORK_RX_HALT, &hw->usb_flags))
3200                         schedule_work(&hw->usb_work);
3201                 ++(wlandev->linux_stats.rx_errors);
3202                 action = ABORT;
3203                 break;
3204
3205         case -EILSEQ:
3206         case -ETIMEDOUT:
3207         case -EPROTO:
3208                 if (!test_and_set_bit(THROTTLE_RX, &hw->usb_flags) &&
3209                     !timer_pending(&hw->throttle)) {
3210                         mod_timer(&hw->throttle, jiffies + THROTTLE_JIFFIES);
3211                 }
3212                 ++(wlandev->linux_stats.rx_errors);
3213                 action = ABORT;
3214                 break;
3215
3216         case -EOVERFLOW:
3217                 ++(wlandev->linux_stats.rx_over_errors);
3218                 action = RESUBMIT;
3219                 break;
3220
3221         case -ENODEV:
3222         case -ESHUTDOWN:
3223                 pr_debug("status=%d, device removed.\n", urb->status);
3224                 action = ABORT;
3225                 break;
3226
3227         case -ENOENT:
3228         case -ECONNRESET:
3229                 pr_debug("status=%d, urb explicitly unlinked.\n",
3230                        urb->status);
3231                 action = ABORT;
3232                 break;
3233
3234         default:
3235                 pr_debug("urb status=%d, transfer flags=0x%x\n",
3236                        urb->status, urb->transfer_flags);
3237                 ++(wlandev->linux_stats.rx_errors);
3238                 action = RESUBMIT;
3239                 break;
3240         }
3241
3242         urb_status = urb->status;
3243
3244         if (action != ABORT) {
3245                 /* Repost the RX URB */
3246                 result = submit_rx_urb(hw, GFP_ATOMIC);
3247
3248                 if (result != 0) {
3249                         printk(KERN_ERR
3250                                "Fatal, failed to resubmit rx_urb. error=%d\n",
3251                                result);
3252                 }
3253         }
3254
3255         /* Handle any USB-IN packet */
3256         /* Note: the check of the sw_support field, the type field doesn't
3257          *       have bit 12 set like the docs suggest.
3258          */
3259         type = le16_to_cpu(usbin->type);
3260         if (HFA384x_USB_ISRXFRM(type)) {
3261                 if (action == HANDLE) {
3262                         if (usbin->txfrm.desc.sw_support == 0x0123) {
3263                                 hfa384x_usbin_txcompl(wlandev, usbin);
3264                         } else {
3265                                 skb_put(skb, sizeof(*usbin));
3266                                 hfa384x_usbin_rx(wlandev, skb);
3267                                 skb = NULL;
3268                         }
3269                 }
3270                 goto exit;
3271         }
3272         if (HFA384x_USB_ISTXFRM(type)) {
3273                 if (action == HANDLE)
3274                         hfa384x_usbin_txcompl(wlandev, usbin);
3275                 goto exit;
3276         }
3277         switch (type) {
3278         case HFA384x_USB_INFOFRM:
3279                 if (action == ABORT)
3280                         goto exit;
3281                 if (action == HANDLE)
3282                         hfa384x_usbin_info(wlandev, usbin);
3283                 break;
3284
3285         case HFA384x_USB_CMDRESP:
3286         case HFA384x_USB_WRIDRESP:
3287         case HFA384x_USB_RRIDRESP:
3288         case HFA384x_USB_WMEMRESP:
3289         case HFA384x_USB_RMEMRESP:
3290                 /* ALWAYS, ALWAYS, ALWAYS handle this CTLX!!!! */
3291                 hfa384x_usbin_ctlx(hw, usbin, urb_status);
3292                 break;
3293
3294         case HFA384x_USB_BUFAVAIL:
3295                 pr_debug("Received BUFAVAIL packet, frmlen=%d\n",
3296                        usbin->bufavail.frmlen);
3297                 break;
3298
3299         case HFA384x_USB_ERROR:
3300                 pr_debug("Received USB_ERROR packet, errortype=%d\n",
3301                        usbin->usberror.errortype);
3302                 break;
3303
3304         default:
3305                 printk(KERN_DEBUG
3306                        "Unrecognized USBIN packet, type=%x, status=%d\n",
3307                        usbin->type, urb_status);
3308                 break;
3309         }                       /* switch */
3310
3311 exit:
3312
3313         if (skb)
3314                 dev_kfree_skb(skb);
3315 }
3316
3317 /*----------------------------------------------------------------
3318 * hfa384x_usbin_ctlx
3319 *
3320 * We've received a URB containing a Prism2 "response" message.
3321 * This message needs to be matched up with a CTLX on the active
3322 * queue and our state updated accordingly.
3323 *
3324 * Arguments:
3325 *       hw              ptr to hfa384x_t
3326 *       usbin           ptr to USB IN packet
3327 *       urb_status      status of this Bulk-In URB
3328 *
3329 * Returns:
3330 *       nothing
3331 *
3332 * Side effects:
3333 *
3334 * Call context:
3335 *       interrupt
3336 ----------------------------------------------------------------*/
3337 static void hfa384x_usbin_ctlx(hfa384x_t *hw, hfa384x_usbin_t *usbin,
3338                                int urb_status)
3339 {
3340         hfa384x_usbctlx_t *ctlx;
3341         int run_queue = 0;
3342         unsigned long flags;
3343
3344 retry:
3345         spin_lock_irqsave(&hw->ctlxq.lock, flags);
3346
3347         /* There can be only one CTLX on the active queue
3348          * at any one time, and this is the CTLX that the
3349          * timers are waiting for.
3350          */
3351         if (list_empty(&hw->ctlxq.active))
3352                 goto unlock;
3353
3354         /* Remove the "response timeout". It's possible that
3355          * we are already too late, and that the timeout is
3356          * already running. And that's just too bad for us,
3357          * because we could lose our CTLX from the active
3358          * queue here ...
3359          */
3360         if (del_timer(&hw->resptimer) == 0) {
3361                 if (hw->resp_timer_done == 0) {
3362                         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3363                         goto retry;
3364                 }
3365         } else {
3366                 hw->resp_timer_done = 1;
3367         }
3368
3369         ctlx = get_active_ctlx(hw);
3370
3371         if (urb_status != 0) {
3372                 /*
3373                  * Bad CTLX, so get rid of it. But we only
3374                  * remove it from the active queue if we're no
3375                  * longer expecting the OUT URB to complete.
3376                  */
3377                 if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0)
3378                         run_queue = 1;
3379         } else {
3380                 const u16 intype = (usbin->type & ~cpu_to_le16(0x8000));
3381
3382                 /*
3383                  * Check that our message is what we're expecting ...
3384                  */
3385                 if (ctlx->outbuf.type != intype) {
3386                         printk(KERN_WARNING
3387                                "Expected IN[%d], received IN[%d] - ignored.\n",
3388                                le16_to_cpu(ctlx->outbuf.type),
3389                                le16_to_cpu(intype));
3390                         goto unlock;
3391                 }
3392
3393                 /* This URB has succeeded, so grab the data ... */
3394                 memcpy(&ctlx->inbuf, usbin, sizeof(ctlx->inbuf));
3395
3396                 switch (ctlx->state) {
3397                 case CTLX_REQ_SUBMITTED:
3398                         /*
3399                          * We have received our response URB before
3400                          * our request has been acknowledged. Odd,
3401                          * but our OUT URB is still alive...
3402                          */
3403                         printk(KERN_DEBUG
3404                                "Causality violation: please reboot Universe, or email linux-wlan-devel@lists.linux-wlan.com\n");
3405                         ctlx->state = CTLX_RESP_COMPLETE;
3406                         break;
3407
3408                 case CTLX_REQ_COMPLETE:
3409                         /*
3410                          * This is the usual path: our request
3411                          * has already been acknowledged, and
3412                          * now we have received the reply too.
3413                          */
3414                         ctlx->state = CTLX_COMPLETE;
3415                         unlocked_usbctlx_complete(hw, ctlx);
3416                         run_queue = 1;
3417                         break;
3418
3419                 default:
3420                         /*
3421                          * Throw this CTLX away ...
3422                          */
3423                         printk(KERN_ERR
3424                                "Matched IN URB, CTLX[%d] in invalid state(%s)."
3425                                " Discarded.\n",
3426                                le16_to_cpu(ctlx->outbuf.type),
3427                                ctlxstr(ctlx->state));
3428                         if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0)
3429                                 run_queue = 1;
3430                         break;
3431                 }               /* switch */
3432         }
3433
3434 unlock:
3435         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3436
3437         if (run_queue)
3438                 hfa384x_usbctlxq_run(hw);
3439 }
3440
3441 /*----------------------------------------------------------------
3442 * hfa384x_usbin_txcompl
3443 *
3444 * At this point we have the results of a previous transmit.
3445 *
3446 * Arguments:
3447 *       wlandev         wlan device
3448 *       usbin           ptr to the usb transfer buffer
3449 *
3450 * Returns:
3451 *       nothing
3452 *
3453 * Side effects:
3454 *
3455 * Call context:
3456 *       interrupt
3457 ----------------------------------------------------------------*/
3458 static void hfa384x_usbin_txcompl(wlandevice_t *wlandev,
3459                                   hfa384x_usbin_t *usbin)
3460 {
3461         u16 status;
3462
3463         status = le16_to_cpu(usbin->type);      /* yeah I know it says type... */
3464
3465         /* Was there an error? */
3466         if (HFA384x_TXSTATUS_ISERROR(status))
3467                 prism2sta_ev_txexc(wlandev, status);
3468         else
3469                 prism2sta_ev_tx(wlandev, status);
3470 }
3471
3472 /*----------------------------------------------------------------
3473 * hfa384x_usbin_rx
3474 *
3475 * At this point we have a successful received a rx frame packet.
3476 *
3477 * Arguments:
3478 *       wlandev         wlan device
3479 *       usbin           ptr to the usb transfer buffer
3480 *
3481 * Returns:
3482 *       nothing
3483 *
3484 * Side effects:
3485 *
3486 * Call context:
3487 *       interrupt
3488 ----------------------------------------------------------------*/
3489 static void hfa384x_usbin_rx(wlandevice_t *wlandev, struct sk_buff *skb)
3490 {
3491         hfa384x_usbin_t *usbin = (hfa384x_usbin_t *) skb->data;
3492         hfa384x_t *hw = wlandev->priv;
3493         int hdrlen;
3494         p80211_rxmeta_t *rxmeta;
3495         u16 data_len;
3496         u16 fc;
3497
3498         /* Byte order convert once up front. */
3499         usbin->rxfrm.desc.status = le16_to_cpu(usbin->rxfrm.desc.status);
3500         usbin->rxfrm.desc.time = le32_to_cpu(usbin->rxfrm.desc.time);
3501
3502         /* Now handle frame based on port# */
3503         switch (HFA384x_RXSTATUS_MACPORT_GET(usbin->rxfrm.desc.status)) {
3504         case 0:
3505                 fc = le16_to_cpu(usbin->rxfrm.desc.frame_control);
3506
3507                 /* If exclude and we receive an unencrypted, drop it */
3508                 if ((wlandev->hostwep & HOSTWEP_EXCLUDEUNENCRYPTED) &&
3509                     !WLAN_GET_FC_ISWEP(fc)) {
3510                         goto done;
3511                 }
3512
3513                 data_len = le16_to_cpu(usbin->rxfrm.desc.data_len);
3514
3515                 /* How much header data do we have? */
3516                 hdrlen = p80211_headerlen(fc);
3517
3518                 /* Pull off the descriptor */
3519                 skb_pull(skb, sizeof(hfa384x_rx_frame_t));
3520
3521                 /* Now shunt the header block up against the data block
3522                  * with an "overlapping" copy
3523                  */
3524                 memmove(skb_push(skb, hdrlen),
3525                         &usbin->rxfrm.desc.frame_control, hdrlen);
3526
3527                 skb->dev = wlandev->netdev;
3528                 skb->dev->last_rx = jiffies;
3529
3530                 /* And set the frame length properly */
3531                 skb_trim(skb, data_len + hdrlen);
3532
3533                 /* The prism2 series does not return the CRC */
3534                 memset(skb_put(skb, WLAN_CRC_LEN), 0xff, WLAN_CRC_LEN);
3535
3536                 skb_reset_mac_header(skb);
3537
3538                 /* Attach the rxmeta, set some stuff */
3539                 p80211skb_rxmeta_attach(wlandev, skb);
3540                 rxmeta = P80211SKB_RXMETA(skb);
3541                 rxmeta->mactime = usbin->rxfrm.desc.time;
3542                 rxmeta->rxrate = usbin->rxfrm.desc.rate;
3543                 rxmeta->signal = usbin->rxfrm.desc.signal - hw->dbmadjust;
3544                 rxmeta->noise = usbin->rxfrm.desc.silence - hw->dbmadjust;
3545
3546                 prism2sta_ev_rx(wlandev, skb);
3547
3548                 break;
3549
3550         case 7:
3551                 if (!HFA384x_RXSTATUS_ISFCSERR(usbin->rxfrm.desc.status)) {
3552                         /* Copy to wlansnif skb */
3553                         hfa384x_int_rxmonitor(wlandev, &usbin->rxfrm);
3554                         dev_kfree_skb(skb);
3555                 } else {
3556                         printk(KERN_DEBUG
3557                                "Received monitor frame: FCSerr set\n");
3558                 }
3559                 break;
3560
3561         default:
3562                 printk(KERN_WARNING "Received frame on unsupported port=%d\n",
3563                        HFA384x_RXSTATUS_MACPORT_GET(usbin->rxfrm.desc.status));
3564                 goto done;
3565                 break;
3566         }
3567
3568 done:
3569         return;
3570 }
3571
3572 /*----------------------------------------------------------------
3573 * hfa384x_int_rxmonitor
3574 *
3575 * Helper function for int_rx.  Handles monitor frames.
3576 * Note that this function allocates space for the FCS and sets it
3577 * to 0xffffffff.  The hfa384x doesn't give us the FCS value but the
3578 * higher layers expect it.  0xffffffff is used as a flag to indicate
3579 * the FCS is bogus.
3580 *
3581 * Arguments:
3582 *       wlandev         wlan device structure
3583 *       rxfrm           rx descriptor read from card in int_rx
3584 *
3585 * Returns:
3586 *       nothing
3587 *
3588 * Side effects:
3589 *       Allocates an skb and passes it up via the PF_PACKET interface.
3590 * Call context:
3591 *       interrupt
3592 ----------------------------------------------------------------*/
3593 static void hfa384x_int_rxmonitor(wlandevice_t *wlandev,
3594                                   hfa384x_usb_rxfrm_t *rxfrm)
3595 {
3596         hfa384x_rx_frame_t *rxdesc = &(rxfrm->desc);
3597         unsigned int hdrlen = 0;
3598         unsigned int datalen = 0;
3599         unsigned int skblen = 0;
3600         u8 *datap;
3601         u16 fc;
3602         struct sk_buff *skb;
3603         hfa384x_t *hw = wlandev->priv;
3604
3605         /* Don't forget the status, time, and data_len fields are in host order */
3606         /* Figure out how big the frame is */
3607         fc = le16_to_cpu(rxdesc->frame_control);
3608         hdrlen = p80211_headerlen(fc);
3609         datalen = le16_to_cpu(rxdesc->data_len);
3610
3611         /* Allocate an ind message+framesize skb */
3612         skblen = sizeof(p80211_caphdr_t) + hdrlen + datalen + WLAN_CRC_LEN;
3613
3614         /* sanity check the length */
3615         if (skblen >
3616             (sizeof(p80211_caphdr_t) +
3617              WLAN_HDR_A4_LEN + WLAN_DATA_MAXLEN + WLAN_CRC_LEN)) {
3618                 pr_debug("overlen frm: len=%zd\n",
3619                        skblen - sizeof(p80211_caphdr_t));
3620         }
3621
3622         if ((skb = dev_alloc_skb(skblen)) == NULL) {
3623                 printk(KERN_ERR
3624                        "alloc_skb failed trying to allocate %d bytes\n",
3625                        skblen);
3626                 return;
3627         }
3628
3629         /* only prepend the prism header if in the right mode */
3630         if ((wlandev->netdev->type == ARPHRD_IEEE80211_PRISM) &&
3631             (hw->sniffhdr != 0)) {
3632                 p80211_caphdr_t *caphdr;
3633                 /* The NEW header format! */
3634                 datap = skb_put(skb, sizeof(p80211_caphdr_t));
3635                 caphdr = (p80211_caphdr_t *) datap;
3636
3637                 caphdr->version = htonl(P80211CAPTURE_VERSION);
3638                 caphdr->length = htonl(sizeof(p80211_caphdr_t));
3639                 caphdr->mactime = __cpu_to_be64(rxdesc->time) * 1000;
3640                 caphdr->hosttime = __cpu_to_be64(jiffies);
3641                 caphdr->phytype = htonl(4);     /* dss_dot11_b */
3642                 caphdr->channel = htonl(hw->sniff_channel);
3643                 caphdr->datarate = htonl(rxdesc->rate);
3644                 caphdr->antenna = htonl(0);     /* unknown */
3645                 caphdr->priority = htonl(0);    /* unknown */
3646                 caphdr->ssi_type = htonl(3);    /* rssi_raw */
3647                 caphdr->ssi_signal = htonl(rxdesc->signal);
3648                 caphdr->ssi_noise = htonl(rxdesc->silence);
3649                 caphdr->preamble = htonl(0);    /* unknown */
3650                 caphdr->encoding = htonl(1);    /* cck */
3651         }
3652
3653         /* Copy the 802.11 header to the skb (ctl frames may be less than a full header) */
3654         datap = skb_put(skb, hdrlen);
3655         memcpy(datap, &(rxdesc->frame_control), hdrlen);
3656
3657         /* If any, copy the data from the card to the skb */
3658         if (datalen > 0) {
3659                 datap = skb_put(skb, datalen);
3660                 memcpy(datap, rxfrm->data, datalen);
3661
3662                 /* check for unencrypted stuff if WEP bit set. */
3663                 if (*(datap - hdrlen + 1) & 0x40)       /* wep set */
3664                         if ((*(datap) == 0xaa) && (*(datap + 1) == 0xaa))
3665                                 *(datap - hdrlen + 1) &= 0xbf;  // clear wep; it's the 802.2 header!
3666         }
3667
3668         if (hw->sniff_fcs) {
3669                 /* Set the FCS */
3670                 datap = skb_put(skb, WLAN_CRC_LEN);
3671                 memset(datap, 0xff, WLAN_CRC_LEN);
3672         }
3673
3674         /* pass it back up */
3675         prism2sta_ev_rx(wlandev, skb);
3676
3677         return;
3678 }
3679
3680 /*----------------------------------------------------------------
3681 * hfa384x_usbin_info
3682 *
3683 * At this point we have a successful received a Prism2 info frame.
3684 *
3685 * Arguments:
3686 *       wlandev         wlan device
3687 *       usbin           ptr to the usb transfer buffer
3688 *
3689 * Returns:
3690 *       nothing
3691 *
3692 * Side effects:
3693 *
3694 * Call context:
3695 *       interrupt
3696 ----------------------------------------------------------------*/
3697 static void hfa384x_usbin_info(wlandevice_t * wlandev, hfa384x_usbin_t * usbin)
3698 {
3699         usbin->infofrm.info.framelen =
3700             le16_to_cpu(usbin->infofrm.info.framelen);
3701         prism2sta_ev_info(wlandev, &usbin->infofrm.info);
3702 }
3703
3704 /*----------------------------------------------------------------
3705 * hfa384x_usbout_callback
3706 *
3707 * Callback for URBs on the BULKOUT endpoint.
3708 *
3709 * Arguments:
3710 *       urb             ptr to the completed urb
3711 *
3712 * Returns:
3713 *       nothing
3714 *
3715 * Side effects:
3716 *
3717 * Call context:
3718 *       interrupt
3719 ----------------------------------------------------------------*/
3720 static void hfa384x_usbout_callback(struct urb *urb)
3721 {
3722         wlandevice_t *wlandev = urb->context;
3723         hfa384x_usbout_t *usbout = urb->transfer_buffer;
3724
3725 #ifdef DEBUG_USB
3726         dbprint_urb(urb);
3727 #endif
3728
3729         if (wlandev && wlandev->netdev) {
3730
3731                 switch (urb->status) {
3732                 case 0:
3733                         hfa384x_usbout_tx(wlandev, usbout);
3734                         break;
3735
3736                 case -EPIPE:
3737                         {
3738                                 hfa384x_t *hw = wlandev->priv;
3739                                 printk(KERN_WARNING
3740                                        "%s tx pipe stalled: requesting reset\n",
3741                                        wlandev->netdev->name);
3742                                 if (!test_and_set_bit
3743                                     (WORK_TX_HALT, &hw->usb_flags))
3744                                         schedule_work(&hw->usb_work);
3745                                 ++(wlandev->linux_stats.tx_errors);
3746                                 break;
3747                         }
3748
3749                 case -EPROTO:
3750                 case -ETIMEDOUT:
3751                 case -EILSEQ:
3752                         {
3753                                 hfa384x_t *hw = wlandev->priv;
3754
3755                                 if (!test_and_set_bit
3756                                     (THROTTLE_TX, &hw->usb_flags)
3757                                     && !timer_pending(&hw->throttle)) {
3758                                         mod_timer(&hw->throttle,
3759                                                   jiffies + THROTTLE_JIFFIES);
3760                                 }
3761                                 ++(wlandev->linux_stats.tx_errors);
3762                                 netif_stop_queue(wlandev->netdev);
3763                                 break;
3764                         }
3765
3766                 case -ENOENT:
3767                 case -ESHUTDOWN:
3768                         /* Ignorable errors */
3769                         break;
3770
3771                 default:
3772                         printk(KERN_INFO "unknown urb->status=%d\n",
3773                                urb->status);
3774                         ++(wlandev->linux_stats.tx_errors);
3775                         break;
3776                 }               /* switch */
3777         }
3778 }
3779
3780 /*----------------------------------------------------------------
3781 * hfa384x_ctlxout_callback
3782 *
3783 * Callback for control data on the BULKOUT endpoint.
3784 *
3785 * Arguments:
3786 *       urb             ptr to the completed urb
3787 *
3788 * Returns:
3789 * nothing
3790 *
3791 * Side effects:
3792 *
3793 * Call context:
3794 * interrupt
3795 ----------------------------------------------------------------*/
3796 static void hfa384x_ctlxout_callback(struct urb *urb)
3797 {
3798         hfa384x_t *hw = urb->context;
3799         int delete_resptimer = 0;
3800         int timer_ok = 1;
3801         int run_queue = 0;
3802         hfa384x_usbctlx_t *ctlx;
3803         unsigned long flags;
3804
3805         pr_debug("urb->status=%d\n", urb->status);
3806 #ifdef DEBUG_USB
3807         dbprint_urb(urb);
3808 #endif
3809         if ((urb->status == -ESHUTDOWN) ||
3810             (urb->status == -ENODEV) || (hw == NULL))
3811                 goto done;
3812
3813 retry:
3814         spin_lock_irqsave(&hw->ctlxq.lock, flags);
3815
3816         /*
3817          * Only one CTLX at a time on the "active" list, and
3818          * none at all if we are unplugged. However, we can
3819          * rely on the disconnect function to clean everything
3820          * up if someone unplugged the adapter.
3821          */
3822         if (list_empty(&hw->ctlxq.active)) {
3823                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3824                 goto done;
3825         }
3826
3827         /*
3828          * Having something on the "active" queue means
3829          * that we have timers to worry about ...
3830          */
3831         if (del_timer(&hw->reqtimer) == 0) {
3832                 if (hw->req_timer_done == 0) {
3833                         /*
3834                          * This timer was actually running while we
3835                          * were trying to delete it. Let it terminate
3836                          * gracefully instead.
3837                          */
3838                         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3839                         goto retry;
3840                 }
3841         } else {
3842                 hw->req_timer_done = 1;
3843         }
3844
3845         ctlx = get_active_ctlx(hw);
3846
3847         if (urb->status == 0) {
3848                 /* Request portion of a CTLX is successful */
3849                 switch (ctlx->state) {
3850                 case CTLX_REQ_SUBMITTED:
3851                         /* This OUT-ACK received before IN */
3852                         ctlx->state = CTLX_REQ_COMPLETE;
3853                         break;
3854
3855                 case CTLX_RESP_COMPLETE:
3856                         /* IN already received before this OUT-ACK,
3857                          * so this command must now be complete.
3858                          */
3859                         ctlx->state = CTLX_COMPLETE;
3860                         unlocked_usbctlx_complete(hw, ctlx);
3861                         run_queue = 1;
3862                         break;
3863
3864                 default:
3865                         /* This is NOT a valid CTLX "success" state! */
3866                         printk(KERN_ERR
3867                                "Illegal CTLX[%d] success state(%s, %d) in OUT URB\n",
3868                                le16_to_cpu(ctlx->outbuf.type),
3869                                ctlxstr(ctlx->state), urb->status);
3870                         break;
3871                 }               /* switch */
3872         } else {
3873                 /* If the pipe has stalled then we need to reset it */
3874                 if ((urb->status == -EPIPE) &&
3875                     !test_and_set_bit(WORK_TX_HALT, &hw->usb_flags)) {
3876                         printk(KERN_WARNING
3877                                "%s tx pipe stalled: requesting reset\n",
3878                                hw->wlandev->netdev->name);
3879                         schedule_work(&hw->usb_work);
3880                 }
3881
3882                 /* If someone cancels the OUT URB then its status
3883                  * should be either -ECONNRESET or -ENOENT.
3884                  */
3885                 ctlx->state = CTLX_REQ_FAILED;
3886                 unlocked_usbctlx_complete(hw, ctlx);
3887                 delete_resptimer = 1;
3888                 run_queue = 1;
3889         }
3890
3891 delresp:
3892         if (delete_resptimer) {
3893                 if ((timer_ok = del_timer(&hw->resptimer)) != 0) {
3894                         hw->resp_timer_done = 1;
3895                 }
3896         }
3897
3898         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3899
3900         if (!timer_ok && (hw->resp_timer_done == 0)) {
3901                 spin_lock_irqsave(&hw->ctlxq.lock, flags);
3902                 goto delresp;
3903         }
3904
3905         if (run_queue)
3906                 hfa384x_usbctlxq_run(hw);
3907
3908 done:
3909         ;
3910 }
3911
3912 /*----------------------------------------------------------------
3913 * hfa384x_usbctlx_reqtimerfn
3914 *
3915 * Timer response function for CTLX request timeouts.  If this
3916 * function is called, it means that the callback for the OUT
3917 * URB containing a Prism2.x XXX_Request was never called.
3918 *
3919 * Arguments:
3920 *       data            a ptr to the hfa384x_t
3921 *
3922 * Returns:
3923 *       nothing
3924 *
3925 * Side effects:
3926 *
3927 * Call context:
3928 *       interrupt
3929 ----------------------------------------------------------------*/
3930 static void hfa384x_usbctlx_reqtimerfn(unsigned long data)
3931 {
3932         hfa384x_t *hw = (hfa384x_t *) data;
3933         unsigned long flags;
3934
3935         spin_lock_irqsave(&hw->ctlxq.lock, flags);
3936
3937         hw->req_timer_done = 1;
3938
3939         /* Removing the hardware automatically empties
3940          * the active list ...
3941          */
3942         if (!list_empty(&hw->ctlxq.active)) {
3943                 /*
3944                  * We must ensure that our URB is removed from
3945                  * the system, if it hasn't already expired.
3946                  */
3947                 hw->ctlx_urb.transfer_flags |= URB_ASYNC_UNLINK;
3948                 if (usb_unlink_urb(&hw->ctlx_urb) == -EINPROGRESS) {
3949                         hfa384x_usbctlx_t *ctlx = get_active_ctlx(hw);
3950
3951                         ctlx->state = CTLX_REQ_FAILED;
3952
3953                         /* This URB was active, but has now been
3954                          * cancelled. It will now have a status of
3955                          * -ECONNRESET in the callback function.
3956                          *
3957                          * We are cancelling this CTLX, so we're
3958                          * not going to need to wait for a response.
3959                          * The URB's callback function will check
3960                          * that this timer is truly dead.
3961                          */
3962                         if (del_timer(&hw->resptimer) != 0)
3963                                 hw->resp_timer_done = 1;
3964                 }
3965         }
3966
3967         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
3968 }
3969
3970 /*----------------------------------------------------------------
3971 * hfa384x_usbctlx_resptimerfn
3972 *
3973 * Timer response function for CTLX response timeouts.  If this
3974 * function is called, it means that the callback for the IN
3975 * URB containing a Prism2.x XXX_Response was never called.
3976 *
3977 * Arguments:
3978 *       data            a ptr to the hfa384x_t
3979 *
3980 * Returns:
3981 *       nothing
3982 *
3983 * Side effects:
3984 *
3985 * Call context:
3986 *       interrupt
3987 ----------------------------------------------------------------*/
3988 static void hfa384x_usbctlx_resptimerfn(unsigned long data)
3989 {
3990         hfa384x_t *hw = (hfa384x_t *) data;
3991         unsigned long flags;
3992
3993         spin_lock_irqsave(&hw->ctlxq.lock, flags);
3994
3995         hw->resp_timer_done = 1;
3996
3997         /* The active list will be empty if the
3998          * adapter has been unplugged ...
3999          */
4000         if (!list_empty(&hw->ctlxq.active)) {
4001                 hfa384x_usbctlx_t *ctlx = get_active_ctlx(hw);
4002
4003                 if (unlocked_usbctlx_cancel_async(hw, ctlx) == 0) {
4004                         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
4005                         hfa384x_usbctlxq_run(hw);
4006                         goto done;
4007                 }
4008         }
4009
4010         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
4011
4012 done:
4013         ;
4014
4015 }
4016
4017 /*----------------------------------------------------------------
4018 * hfa384x_usb_throttlefn
4019 *
4020 *
4021 * Arguments:
4022 *       data    ptr to hw
4023 *
4024 * Returns:
4025 *       Nothing
4026 *
4027 * Side effects:
4028 *
4029 * Call context:
4030 *       Interrupt
4031 ----------------------------------------------------------------*/
4032 static void hfa384x_usb_throttlefn(unsigned long data)
4033 {
4034         hfa384x_t *hw = (hfa384x_t *) data;
4035         unsigned long flags;
4036
4037         spin_lock_irqsave(&hw->ctlxq.lock, flags);
4038
4039         /*
4040          * We need to check BOTH the RX and the TX throttle controls,
4041          * so we use the bitwise OR instead of the logical OR.
4042          */
4043         pr_debug("flags=0x%lx\n", hw->usb_flags);
4044         if (!hw->wlandev->hwremoved &&
4045             ((test_and_clear_bit(THROTTLE_RX, &hw->usb_flags) &&
4046               !test_and_set_bit(WORK_RX_RESUME, &hw->usb_flags))
4047              |
4048              (test_and_clear_bit(THROTTLE_TX, &hw->usb_flags) &&
4049               !test_and_set_bit(WORK_TX_RESUME, &hw->usb_flags))
4050             )) {
4051                 schedule_work(&hw->usb_work);
4052         }
4053
4054         spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
4055 }
4056
4057 /*----------------------------------------------------------------
4058 * hfa384x_usbctlx_submit
4059 *
4060 * Called from the doxxx functions to submit a CTLX to the queue
4061 *
4062 * Arguments:
4063 *       hw              ptr to the hw struct
4064 *       ctlx            ctlx structure to enqueue
4065 *
4066 * Returns:
4067 *       -ENODEV if the adapter is unplugged
4068 *       0
4069 *
4070 * Side effects:
4071 *
4072 * Call context:
4073 *       process or interrupt
4074 ----------------------------------------------------------------*/
4075 static int hfa384x_usbctlx_submit(hfa384x_t *hw, hfa384x_usbctlx_t *ctlx)
4076 {
4077         unsigned long flags;
4078         int ret;
4079
4080         spin_lock_irqsave(&hw->ctlxq.lock, flags);
4081
4082         if (hw->wlandev->hwremoved) {
4083                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
4084                 ret = -ENODEV;
4085         } else {
4086                 ctlx->state = CTLX_PENDING;
4087                 list_add_tail(&ctlx->list, &hw->ctlxq.pending);
4088
4089                 spin_unlock_irqrestore(&hw->ctlxq.lock, flags);
4090                 hfa384x_usbctlxq_run(hw);
4091                 ret = 0;
4092         }
4093
4094         return ret;
4095 }
4096
4097 /*----------------------------------------------------------------
4098 * hfa384x_usbout_tx
4099 *
4100 * At this point we have finished a send of a frame.  Mark the URB
4101 * as available and call ev_alloc to notify higher layers we're
4102 * ready for more.
4103 *
4104 * Arguments:
4105 *       wlandev         wlan device
4106 *       usbout          ptr to the usb transfer buffer
4107 *
4108 * Returns:
4109 *       nothing
4110 *
4111 * Side effects:
4112 *
4113 * Call context:
4114 *       interrupt
4115 ----------------------------------------------------------------*/
4116 static void hfa384x_usbout_tx(wlandevice_t *wlandev, hfa384x_usbout_t *usbout)
4117 {
4118         prism2sta_ev_alloc(wlandev);
4119 }
4120
4121 /*----------------------------------------------------------------
4122 * hfa384x_isgood_pdrcore
4123 *
4124 * Quick check of PDR codes.
4125 *
4126 * Arguments:
4127 *       pdrcode         PDR code number (host order)
4128 *
4129 * Returns:
4130 *       zero            not good.
4131 *       one             is good.
4132 *
4133 * Side effects:
4134 *
4135 * Call context:
4136 ----------------------------------------------------------------*/
4137 static int hfa384x_isgood_pdrcode(u16 pdrcode)
4138 {
4139         switch (pdrcode) {
4140         case HFA384x_PDR_END_OF_PDA:
4141         case HFA384x_PDR_PCB_PARTNUM:
4142         case HFA384x_PDR_PDAVER:
4143         case HFA384x_PDR_NIC_SERIAL:
4144         case HFA384x_PDR_MKK_MEASUREMENTS:
4145         case HFA384x_PDR_NIC_RAMSIZE:
4146         case HFA384x_PDR_MFISUPRANGE:
4147         case HFA384x_PDR_CFISUPRANGE:
4148         case HFA384x_PDR_NICID:
4149         case HFA384x_PDR_MAC_ADDRESS:
4150         case HFA384x_PDR_REGDOMAIN:
4151         case HFA384x_PDR_ALLOWED_CHANNEL:
4152         case HFA384x_PDR_DEFAULT_CHANNEL:
4153         case HFA384x_PDR_TEMPTYPE:
4154         case HFA384x_PDR_IFR_SETTING:
4155         case HFA384x_PDR_RFR_SETTING:
4156         case HFA384x_PDR_HFA3861_BASELINE:
4157         case HFA384x_PDR_HFA3861_SHADOW:
4158         case HFA384x_PDR_HFA3861_IFRF:
4159         case HFA384x_PDR_HFA3861_CHCALSP:
4160         case HFA384x_PDR_HFA3861_CHCALI:
4161         case HFA384x_PDR_3842_NIC_CONFIG:
4162         case HFA384x_PDR_USB_ID:
4163         case HFA384x_PDR_PCI_ID:
4164         case HFA384x_PDR_PCI_IFCONF:
4165         case HFA384x_PDR_PCI_PMCONF:
4166         case HFA384x_PDR_RFENRGY:
4167         case HFA384x_PDR_HFA3861_MANF_TESTSP:
4168         case HFA384x_PDR_HFA3861_MANF_TESTI:
4169                 /* code is OK */
4170                 return 1;
4171                 break;
4172         default:
4173                 if (pdrcode < 0x1000) {
4174                         /* code is OK, but we don't know exactly what it is */
4175                         printk(KERN_DEBUG
4176                                "Encountered unknown PDR#=0x%04x, "
4177                                "assuming it's ok.\n", pdrcode);
4178                         return 1;
4179                 } else {
4180                         /* bad code */
4181                         printk(KERN_DEBUG
4182                                "Encountered unknown PDR#=0x%04x, "
4183                                "(>=0x1000), assuming it's bad.\n", pdrcode);
4184                         return 0;
4185                 }
4186                 break;
4187         }
4188         return 0;               /* avoid compiler warnings */
4189 }