1 /*******************************************************************************
2 * Agere Systems Inc.
3 * Wireless device driver for Linux (wlags49).
4 *
5 * Copyright (c) 1998-2003 Agere Systems Inc.
6 * All rights reserved.
7 * http://www.agere.com
8 *
9 * Initially developed by TriplePoint, Inc.
10 * http://www.triplepoint.com
11 *
12 *------------------------------------------------------------------------------
13 *
14 * This file contains handler functions registered with the net_device
15 * structure.
16 *
17 *------------------------------------------------------------------------------
18 *
19 * SOFTWARE LICENSE
20 *
21 * This software is provided subject to the following terms and conditions,
22 * which you should read carefully before using the software. Using this
23 * software indicates your acceptance of these terms and conditions. If you do
24 * not agree with these terms and conditions, do not use the software.
25 *
26 * Copyright © 2003 Agere Systems Inc.
27 * All rights reserved.
28 *
29 * Redistribution and use in source or binary forms, with or without
30 * modifications, are permitted provided that the following conditions are met:
31 *
32 * . Redistributions of source code must retain the above copyright notice, this
33 * list of conditions and the following Disclaimer as comments in the code as
34 * well as in the documentation and/or other materials provided with the
35 * distribution.
36 *
37 * . Redistributions in binary form must reproduce the above copyright notice,
38 * this list of conditions and the following Disclaimer in the documentation
39 * and/or other materials provided with the distribution.
40 *
41 * . Neither the name of Agere Systems Inc. nor the names of the contributors
42 * may be used to endorse or promote products derived from this software
43 * without specific prior written permission.
44 *
45 * Disclaimer
46 *
47 * THIS SOFTWARE IS PROVIDED “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES,
48 * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
49 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
50 * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
51 * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
52 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
53 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
54 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55 * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
58 * DAMAGE.
59 *
60 ******************************************************************************/
61
62 /*******************************************************************************
63 * include files
64 ******************************************************************************/
65 #include <wl_version.h>
66
67 #include <linux/module.h>
68 #include <linux/slab.h>
69 #include <linux/types.h>
70 #include <linux/kernel.h>
71 // #include <linux/sched.h>
72 // #include <linux/ptrace.h>
73 // #include <linux/slab.h>
74 // #include <linux/ctype.h>
75 // #include <linux/string.h>
76 //#include <linux/timer.h>
77 // #include <linux/interrupt.h>
78 // #include <linux/in.h>
79 // #include <linux/delay.h>
80 // #include <linux/skbuff.h>
81 // #include <asm/io.h>
82 // // #include <asm/bitops.h>
83
84 #include <linux/netdevice.h>
85 #include <linux/ethtool.h>
86 #include <linux/etherdevice.h>
87 // #include <linux/skbuff.h>
88 // #include <linux/if_arp.h>
89 // #include <linux/ioport.h>
90
91 #include <debug.h>
92
93 #include <hcf.h>
94 #include <dhf.h>
95 // #include <hcfdef.h>
96
97 #include <wl_if.h>
98 #include <wl_internal.h>
99 #include <wl_util.h>
100 #include <wl_priv.h>
101 #include <wl_main.h>
102 #include <wl_netdev.h>
103 #include <wl_wext.h>
104
105 #ifdef USE_PROFILE
106 #include <wl_profile.h>
107 #endif /* USE_PROFILE */
108
109 #ifdef BUS_PCMCIA
110 #include <wl_cs.h>
111 #endif /* BUS_PCMCIA */
112
113 #ifdef BUS_PCI
114 #include <wl_pci.h>
115 #endif /* BUS_PCI */
116
117
118 /*******************************************************************************
119 * global variables
120 ******************************************************************************/
121 #if DBG
122 extern dbg_info_t *DbgInfo;
123 #endif /* DBG */
124
125
126 #if HCF_ENCAP
127 #define MTU_MAX (HCF_MAX_MSG - ETH_HLEN - 8)
128 #else
129 #define MTU_MAX (HCF_MAX_MSG - ETH_HLEN)
130 #endif
131
132 //static int mtu = MTU_MAX;
133 //MODULE_PARM(mtu, "i");
134 //MODULE_PARM_DESC(mtu, "MTU");
135
136 /*******************************************************************************
137 * macros
138 ******************************************************************************/
139 #define BLOCK_INPUT(buf, len) \
140 desc->buf_addr = buf; \
141 desc->BUF_SIZE = len; \
142 status = hcf_rcv_msg(&(lp->hcfCtx), desc, 0)
143
144 #define BLOCK_INPUT_DMA(buf, len) memcpy( buf, desc_next->buf_addr, pktlen )
145
146 /*******************************************************************************
147 * function prototypes
148 ******************************************************************************/
149
150 /*******************************************************************************
151 * wl_init()
152 *******************************************************************************
153 *
154 * DESCRIPTION:
155 *
156 * We never need to do anything when a "Wireless" device is "initialized"
157 * by the net software, because we only register already-found cards.
158 *
159 * PARAMETERS:
160 *
161 * dev - a pointer to the device's net_device structure
162 *
163 * RETURNS:
164 *
165 * 0 on success
166 * errno value otherwise
167 *
168 ******************************************************************************/
wl_init(struct net_device * dev)169 int wl_init( struct net_device *dev )
170 {
171 // unsigned long flags;
172 // struct wl_private *lp = wl_priv(dev);
173 /*------------------------------------------------------------------------*/
174
175 DBG_FUNC( "wl_init" );
176 DBG_ENTER( DbgInfo );
177
178 DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
179
180 /* Nothing to do, but grab the spinlock anyway just in case we ever need
181 this routine */
182 // wl_lock( lp, &flags );
183 // wl_unlock( lp, &flags );
184
185 DBG_LEAVE( DbgInfo );
186 return 0;
187 } // wl_init
188 /*============================================================================*/
189
190 /*******************************************************************************
191 * wl_config()
192 *******************************************************************************
193 *
194 * DESCRIPTION:
195 *
196 * Implement the SIOCSIFMAP interface.
197 *
198 * PARAMETERS:
199 *
200 * dev - a pointer to the device's net_device structure
201 * map - a pointer to the device's ifmap structure
202 *
203 * RETURNS:
204 *
205 * 0 on success
206 * errno otherwise
207 *
208 ******************************************************************************/
wl_config(struct net_device * dev,struct ifmap * map)209 int wl_config( struct net_device *dev, struct ifmap *map )
210 {
211 DBG_FUNC( "wl_config" );
212 DBG_ENTER( DbgInfo );
213
214 DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
215 DBG_PARAM( DbgInfo, "map", "0x%p", map );
216
217 /* The only thing we care about here is a port change. Since this not needed,
218 ignore the request. */
219 DBG_TRACE(DbgInfo, "%s: %s called.\n", dev->name, __func__);
220
221 DBG_LEAVE( DbgInfo );
222 return 0;
223 } // wl_config
224 /*============================================================================*/
225
226 /*******************************************************************************
227 * wl_stats()
228 *******************************************************************************
229 *
230 * DESCRIPTION:
231 *
232 * Return the current device statistics.
233 *
234 * PARAMETERS:
235 *
236 * dev - a pointer to the device's net_device structure
237 *
238 * RETURNS:
239 *
240 * a pointer to a net_device_stats structure containing the network
241 * statistics.
242 *
243 ******************************************************************************/
wl_stats(struct net_device * dev)244 struct net_device_stats *wl_stats( struct net_device *dev )
245 {
246 #ifdef USE_WDS
247 int count;
248 #endif /* USE_WDS */
249 unsigned long flags;
250 struct net_device_stats *pStats;
251 struct wl_private *lp = wl_priv(dev);
252 /*------------------------------------------------------------------------*/
253
254 //DBG_FUNC( "wl_stats" );
255 //DBG_ENTER( DbgInfo );
256 //DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
257
258 pStats = NULL;
259
260 wl_lock( lp, &flags );
261
262 #ifdef USE_RTS
263 if( lp->useRTS == 1 ) {
264 wl_unlock( lp, &flags );
265
266 //DBG_LEAVE( DbgInfo );
267 return NULL;
268 }
269 #endif /* USE_RTS */
270
271 /* Return the statistics for the appropriate device */
272 #ifdef USE_WDS
273
274 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
275 if( dev == lp->wds_port[count].dev ) {
276 pStats = &( lp->wds_port[count].stats );
277 }
278 }
279
280 #endif /* USE_WDS */
281
282 /* If pStats is still NULL, then the device is not a WDS port */
283 if( pStats == NULL ) {
284 pStats = &( lp->stats );
285 }
286
287 wl_unlock( lp, &flags );
288
289 //DBG_LEAVE( DbgInfo );
290
291 return pStats;
292 } // wl_stats
293 /*============================================================================*/
294
295 /*******************************************************************************
296 * wl_open()
297 *******************************************************************************
298 *
299 * DESCRIPTION:
300 *
301 * Open the device.
302 *
303 * PARAMETERS:
304 *
305 * dev - a pointer to the device's net_device structure
306 *
307 * RETURNS:
308 *
309 * 0 on success
310 * errno otherwise
311 *
312 ******************************************************************************/
wl_open(struct net_device * dev)313 int wl_open(struct net_device *dev)
314 {
315 int status = HCF_SUCCESS;
316 struct wl_private *lp = wl_priv(dev);
317 unsigned long flags;
318 /*------------------------------------------------------------------------*/
319
320 DBG_FUNC( "wl_open" );
321 DBG_ENTER( DbgInfo );
322
323 wl_lock( lp, &flags );
324
325 #ifdef USE_RTS
326 if( lp->useRTS == 1 ) {
327 DBG_TRACE( DbgInfo, "Skipping device open, in RTS mode\n" );
328 wl_unlock( lp, &flags );
329 DBG_LEAVE( DbgInfo );
330 return -EIO;
331 }
332 #endif /* USE_RTS */
333
334 #ifdef USE_PROFILE
335 parse_config( dev );
336 #endif
337
338 if( lp->portState == WVLAN_PORT_STATE_DISABLED ) {
339 DBG_TRACE( DbgInfo, "Enabling Port 0\n" );
340 status = wl_enable( lp );
341
342 if( status != HCF_SUCCESS ) {
343 DBG_TRACE( DbgInfo, "Enable port 0 failed: 0x%x\n", status );
344 }
345 }
346
347 // Holding the lock too long, make a gap to allow other processes
348 wl_unlock(lp, &flags);
349 wl_lock( lp, &flags );
350
351 if ( strlen( lp->fw_image_filename ) ) {
352 DBG_TRACE( DbgInfo, ";???? Kludgy way to force a download\n" );
353 status = wl_go( lp );
354 } else {
355 status = wl_apply( lp );
356 }
357
358 // Holding the lock too long, make a gap to allow other processes
359 wl_unlock(lp, &flags);
360 wl_lock( lp, &flags );
361
362 if( status != HCF_SUCCESS ) {
363 // Unsuccessful, try reset of the card to recover
364 status = wl_reset( dev );
365 }
366
367 // Holding the lock too long, make a gap to allow other processes
368 wl_unlock(lp, &flags);
369 wl_lock( lp, &flags );
370
371 if( status == HCF_SUCCESS ) {
372 netif_carrier_on( dev );
373 WL_WDS_NETIF_CARRIER_ON( lp );
374
375 lp->is_handling_int = WL_HANDLING_INT; // Start handling interrupts
376 wl_act_int_on( lp );
377
378 netif_start_queue( dev );
379 WL_WDS_NETIF_START_QUEUE( lp );
380 } else {
381 wl_hcf_error( dev, status ); /* Report the error */
382 netif_device_detach( dev ); /* Stop the device and queue */
383 }
384
385 wl_unlock( lp, &flags );
386
387 DBG_LEAVE( DbgInfo );
388 return status;
389 } // wl_open
390 /*============================================================================*/
391
392 /*******************************************************************************
393 * wl_close()
394 *******************************************************************************
395 *
396 * DESCRIPTION:
397 *
398 * Close the device.
399 *
400 * PARAMETERS:
401 *
402 * dev - a pointer to the device's net_device structure
403 *
404 * RETURNS:
405 *
406 * 0 on success
407 * errno otherwise
408 *
409 ******************************************************************************/
wl_close(struct net_device * dev)410 int wl_close( struct net_device *dev )
411 {
412 struct wl_private *lp = wl_priv(dev);
413 unsigned long flags;
414 /*------------------------------------------------------------------------*/
415
416 DBG_FUNC("wl_close");
417 DBG_ENTER(DbgInfo);
418 DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
419
420 /* Mark the adapter as busy */
421 netif_stop_queue( dev );
422 WL_WDS_NETIF_STOP_QUEUE( lp );
423
424 netif_carrier_off( dev );
425 WL_WDS_NETIF_CARRIER_OFF( lp );
426
427 /* Shutdown the adapter:
428 Disable adapter interrupts
429 Stop Tx/Rx
430 Update statistics
431 Set low power mode
432 */
433
434 wl_lock( lp, &flags );
435
436 wl_act_int_off( lp );
437 lp->is_handling_int = WL_NOT_HANDLING_INT; // Stop handling interrupts
438
439 #ifdef USE_RTS
440 if( lp->useRTS == 1 ) {
441 DBG_TRACE( DbgInfo, "Skipping device close, in RTS mode\n" );
442 wl_unlock( lp, &flags );
443 DBG_LEAVE( DbgInfo );
444 return -EIO;
445 }
446 #endif /* USE_RTS */
447
448 /* Disable the ports */
449 wl_disable( lp );
450
451 wl_unlock( lp, &flags );
452
453 DBG_LEAVE( DbgInfo );
454 return 0;
455 } // wl_close
456 /*============================================================================*/
457
wl_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)458 static void wl_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
459 {
460 strncpy(info->driver, DRIVER_NAME, sizeof(info->driver) - 1);
461 strncpy(info->version, DRV_VERSION_STR, sizeof(info->version) - 1);
462 // strncpy(info.fw_version, priv->fw_name,
463 // sizeof(info.fw_version) - 1);
464
465 if (dev->dev.parent) {
466 dev_set_name(dev->dev.parent, "%s", info->bus_info);
467 //strncpy(info->bus_info, dev->dev.parent->bus_id,
468 // sizeof(info->bus_info) - 1);
469 } else {
470 snprintf(info->bus_info, sizeof(info->bus_info) - 1,
471 "PCMCIA FIXME");
472 // "PCMCIA 0x%lx", priv->hw.iobase);
473 }
474 } // wl_get_drvinfo
475
476 static struct ethtool_ops wl_ethtool_ops = {
477 .get_drvinfo = wl_get_drvinfo,
478 .get_link = ethtool_op_get_link,
479 };
480
481
482 /*******************************************************************************
483 * wl_ioctl()
484 *******************************************************************************
485 *
486 * DESCRIPTION:
487 *
488 * The IOCTL handler for the device.
489 *
490 * PARAMETERS:
491 *
492 * dev - a pointer to the device's net_device struct.
493 * rq - a pointer to the IOCTL request buffer.
494 * cmd - the IOCTL command code.
495 *
496 * RETURNS:
497 *
498 * 0 on success
499 * errno value otherwise
500 *
501 ******************************************************************************/
wl_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)502 int wl_ioctl( struct net_device *dev, struct ifreq *rq, int cmd )
503 {
504 struct wl_private *lp = wl_priv(dev);
505 unsigned long flags;
506 int ret = 0;
507 /*------------------------------------------------------------------------*/
508
509 DBG_FUNC( "wl_ioctl" );
510 DBG_ENTER(DbgInfo);
511 DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
512 DBG_PARAM(DbgInfo, "rq", "0x%p", rq);
513 DBG_PARAM(DbgInfo, "cmd", "0x%04x", cmd);
514
515 wl_lock( lp, &flags );
516
517 wl_act_int_off( lp );
518
519 #ifdef USE_RTS
520 if( lp->useRTS == 1 ) {
521 /* Handle any RTS IOCTL here */
522 if( cmd == WL_IOCTL_RTS ) {
523 DBG_TRACE( DbgInfo, "IOCTL: WL_IOCTL_RTS\n" );
524 ret = wvlan_rts( (struct rtsreq *)rq, dev->base_addr );
525 } else {
526 DBG_TRACE( DbgInfo, "IOCTL not supported in RTS mode: 0x%X\n", cmd );
527 ret = -EOPNOTSUPP;
528 }
529
530 goto out_act_int_on_unlock;
531 }
532 #endif /* USE_RTS */
533
534 /* Only handle UIL IOCTL requests when the UIL has the system blocked. */
535 if( !(( lp->flags & WVLAN2_UIL_BUSY ) && ( cmd != WVLAN2_IOCTL_UIL ))) {
536 #ifdef USE_UIL
537 struct uilreq *urq = (struct uilreq *)rq;
538 #endif /* USE_UIL */
539
540 switch( cmd ) {
541 // ================== Private IOCTLs (up to 16) ==================
542 #ifdef USE_UIL
543 case WVLAN2_IOCTL_UIL:
544 DBG_TRACE( DbgInfo, "IOCTL: WVLAN2_IOCTL_UIL\n" );
545 ret = wvlan_uil( urq, lp );
546 break;
547 #endif /* USE_UIL */
548
549 default:
550 DBG_TRACE(DbgInfo, "IOCTL CODE NOT SUPPORTED: 0x%X\n", cmd );
551 ret = -EOPNOTSUPP;
552 break;
553 }
554 } else {
555 DBG_WARNING( DbgInfo, "DEVICE IS BUSY, CANNOT PROCESS REQUEST\n" );
556 ret = -EBUSY;
557 }
558
559 #ifdef USE_RTS
560 out_act_int_on_unlock:
561 #endif /* USE_RTS */
562 wl_act_int_on( lp );
563
564 wl_unlock( lp, &flags );
565
566 DBG_LEAVE( DbgInfo );
567 return ret;
568 } // wl_ioctl
569 /*============================================================================*/
570
571 #ifdef CONFIG_NET_POLL_CONTROLLER
wl_poll(struct net_device * dev)572 void wl_poll(struct net_device *dev)
573 {
574 struct wl_private *lp = wl_priv(dev);
575 unsigned long flags;
576 struct pt_regs regs;
577
578 wl_lock( lp, &flags );
579 wl_isr(dev->irq, dev, ®s);
580 wl_unlock( lp, &flags );
581 }
582 #endif
583
584 /*******************************************************************************
585 * wl_tx_timeout()
586 *******************************************************************************
587 *
588 * DESCRIPTION:
589 *
590 * The handler called when, for some reason, a Tx request is not completed.
591 *
592 * PARAMETERS:
593 *
594 * dev - a pointer to the device's net_device struct.
595 *
596 * RETURNS:
597 *
598 * N/A
599 *
600 ******************************************************************************/
wl_tx_timeout(struct net_device * dev)601 void wl_tx_timeout( struct net_device *dev )
602 {
603 #ifdef USE_WDS
604 int count;
605 #endif /* USE_WDS */
606 unsigned long flags;
607 struct wl_private *lp = wl_priv(dev);
608 struct net_device_stats *pStats = NULL;
609 /*------------------------------------------------------------------------*/
610
611 DBG_FUNC( "wl_tx_timeout" );
612 DBG_ENTER( DbgInfo );
613
614 DBG_WARNING( DbgInfo, "%s: Transmit timeout.\n", dev->name );
615
616 wl_lock( lp, &flags );
617
618 #ifdef USE_RTS
619 if( lp->useRTS == 1 ) {
620 DBG_TRACE( DbgInfo, "Skipping tx_timeout handler, in RTS mode\n" );
621 wl_unlock( lp, &flags );
622
623 DBG_LEAVE( DbgInfo );
624 return;
625 }
626 #endif /* USE_RTS */
627
628 /* Figure out which device (the "root" device or WDS port) this timeout
629 is for */
630 #ifdef USE_WDS
631
632 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
633 if( dev == lp->wds_port[count].dev ) {
634 pStats = &( lp->wds_port[count].stats );
635
636 /* Break the loop so that we can use the counter to access WDS
637 information in the private structure */
638 break;
639 }
640 }
641
642 #endif /* USE_WDS */
643
644 /* If pStats is still NULL, then the device is not a WDS port */
645 if( pStats == NULL ) {
646 pStats = &( lp->stats );
647 }
648
649 /* Accumulate the timeout error */
650 pStats->tx_errors++;
651
652 wl_unlock( lp, &flags );
653
654 DBG_LEAVE( DbgInfo );
655 return;
656 } // wl_tx_timeout
657 /*============================================================================*/
658
659 /*******************************************************************************
660 * wl_send()
661 *******************************************************************************
662 *
663 * DESCRIPTION:
664 *
665 * The routine which performs data transmits.
666 *
667 * PARAMETERS:
668 *
669 * lp - a pointer to the device's wl_private struct.
670 *
671 * RETURNS:
672 *
673 * 0 on success
674 * 1 on error
675 *
676 ******************************************************************************/
wl_send(struct wl_private * lp)677 int wl_send( struct wl_private *lp )
678 {
679
680 int status;
681 DESC_STRCT *desc;
682 WVLAN_LFRAME *txF = NULL;
683 struct list_head *element;
684 int len;
685 /*------------------------------------------------------------------------*/
686
687 DBG_FUNC( "wl_send" );
688
689 if( lp == NULL ) {
690 DBG_ERROR( DbgInfo, "Private adapter struct is NULL\n" );
691 return FALSE;
692 }
693 if( lp->dev == NULL ) {
694 DBG_ERROR( DbgInfo, "net_device struct in wl_private is NULL\n" );
695 return FALSE;
696 }
697
698 /* Check for the availability of FIDs; if none are available, don't take any
699 frames off the txQ */
700 if( lp->hcfCtx.IFB_RscInd == 0 ) {
701 return FALSE;
702 }
703
704 /* Reclaim the TxQ Elements and place them back on the free queue */
705 if( !list_empty( &( lp->txQ[0] ))) {
706 element = lp->txQ[0].next;
707
708 txF = (WVLAN_LFRAME * )list_entry( element, WVLAN_LFRAME, node );
709 if( txF != NULL ) {
710 lp->txF.skb = txF->frame.skb;
711 lp->txF.port = txF->frame.port;
712
713 txF->frame.skb = NULL;
714 txF->frame.port = 0;
715
716 list_del( &( txF->node ));
717 list_add( element, &( lp->txFree ));
718
719 lp->txQ_count--;
720
721 if( lp->txQ_count < TX_Q_LOW_WATER_MARK ) {
722 if( lp->netif_queue_on == FALSE ) {
723 DBG_TX( DbgInfo, "Kickstarting Q: %d\n", lp->txQ_count );
724 netif_wake_queue( lp->dev );
725 WL_WDS_NETIF_WAKE_QUEUE( lp );
726 lp->netif_queue_on = TRUE;
727 }
728 }
729 }
730 }
731
732 if( lp->txF.skb == NULL ) {
733 return FALSE;
734 }
735
736 /* If the device has resources (FIDs) available, then Tx the packet */
737 /* Format the TxRequest and send it to the adapter */
738 len = lp->txF.skb->len < ETH_ZLEN ? ETH_ZLEN : lp->txF.skb->len;
739
740 desc = &( lp->desc_tx );
741 desc->buf_addr = lp->txF.skb->data;
742 desc->BUF_CNT = len;
743 desc->next_desc_addr = NULL;
744
745 status = hcf_send_msg( &( lp->hcfCtx ), desc, lp->txF.port );
746
747 if( status == HCF_SUCCESS ) {
748 lp->dev->trans_start = jiffies;
749
750 DBG_TX( DbgInfo, "Transmit...\n" );
751
752 if( lp->txF.port == HCF_PORT_0 ) {
753 lp->stats.tx_packets++;
754 lp->stats.tx_bytes += lp->txF.skb->len;
755 }
756
757 #ifdef USE_WDS
758 else
759 {
760 lp->wds_port[(( lp->txF.port >> 8 ) - 1)].stats.tx_packets++;
761 lp->wds_port[(( lp->txF.port >> 8 ) - 1)].stats.tx_bytes += lp->txF.skb->len;
762 }
763
764 #endif /* USE_WDS */
765
766 /* Free the skb and perform queue cleanup, as the buffer was
767 transmitted successfully */
768 dev_kfree_skb( lp->txF.skb );
769
770 lp->txF.skb = NULL;
771 lp->txF.port = 0;
772 }
773
774 return TRUE;
775 } // wl_send
776 /*============================================================================*/
777
778 /*******************************************************************************
779 * wl_tx()
780 *******************************************************************************
781 *
782 * DESCRIPTION:
783 *
784 * The Tx handler function for the network layer.
785 *
786 * PARAMETERS:
787 *
788 * skb - a pointer to the sk_buff structure containing the data to transfer.
789 * dev - a pointer to the device's net_device structure.
790 *
791 * RETURNS:
792 *
793 * 0 on success
794 * 1 on error
795 *
796 ******************************************************************************/
wl_tx(struct sk_buff * skb,struct net_device * dev,int port)797 int wl_tx( struct sk_buff *skb, struct net_device *dev, int port )
798 {
799 unsigned long flags;
800 struct wl_private *lp = wl_priv(dev);
801 WVLAN_LFRAME *txF = NULL;
802 struct list_head *element;
803 /*------------------------------------------------------------------------*/
804
805 DBG_FUNC( "wl_tx" );
806
807 /* Grab the spinlock */
808 wl_lock( lp, &flags );
809
810 if( lp->flags & WVLAN2_UIL_BUSY ) {
811 DBG_WARNING( DbgInfo, "UIL has device blocked\n" );
812 /* Start dropping packets here??? */
813 wl_unlock( lp, &flags );
814 return 1;
815 }
816
817 #ifdef USE_RTS
818 if( lp->useRTS == 1 ) {
819 DBG_PRINT( "RTS: we're getting a Tx...\n" );
820 wl_unlock( lp, &flags );
821 return 1;
822 }
823 #endif /* USE_RTS */
824
825 if( !lp->use_dma ) {
826 /* Get an element from the queue */
827 element = lp->txFree.next;
828 txF = (WVLAN_LFRAME *)list_entry( element, WVLAN_LFRAME, node );
829 if( txF == NULL ) {
830 DBG_ERROR( DbgInfo, "Problem with list_entry\n" );
831 wl_unlock( lp, &flags );
832 return 1;
833 }
834 /* Fill out the frame */
835 txF->frame.skb = skb;
836 txF->frame.port = port;
837 /* Move the frame to the txQ */
838 /* NOTE: Here's where we would do priority queueing */
839 list_del( &( txF->node ));
840 list_add( &( txF->node ), &( lp->txQ[0] ));
841
842 lp->txQ_count++;
843 if( lp->txQ_count >= DEFAULT_NUM_TX_FRAMES ) {
844 DBG_TX( DbgInfo, "Q Full: %d\n", lp->txQ_count );
845 if( lp->netif_queue_on == TRUE ) {
846 netif_stop_queue( lp->dev );
847 WL_WDS_NETIF_STOP_QUEUE( lp );
848 lp->netif_queue_on = FALSE;
849 }
850 }
851 }
852 wl_act_int_off( lp ); /* Disable Interrupts */
853
854 /* Send the data to the hardware using the appropriate method */
855 #ifdef ENABLE_DMA
856 if( lp->use_dma ) {
857 wl_send_dma( lp, skb, port );
858 }
859 else
860 #endif
861 {
862 wl_send( lp );
863 }
864 /* Re-enable Interrupts, release the spinlock and return */
865 wl_act_int_on( lp );
866 wl_unlock( lp, &flags );
867 return 0;
868 } // wl_tx
869 /*============================================================================*/
870
871 /*******************************************************************************
872 * wl_rx()
873 *******************************************************************************
874 *
875 * DESCRIPTION:
876 *
877 * The routine which performs data reception.
878 *
879 * PARAMETERS:
880 *
881 * dev - a pointer to the device's net_device structure.
882 *
883 * RETURNS:
884 *
885 * 0 on success
886 * 1 on error
887 *
888 ******************************************************************************/
wl_rx(struct net_device * dev)889 int wl_rx(struct net_device *dev)
890 {
891 int port;
892 struct sk_buff *skb;
893 struct wl_private *lp = wl_priv(dev);
894 int status;
895 hcf_16 pktlen;
896 hcf_16 hfs_stat;
897 DESC_STRCT *desc;
898 /*------------------------------------------------------------------------*/
899
900 DBG_FUNC("wl_rx")
901 DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
902
903 if(!( lp->flags & WVLAN2_UIL_BUSY )) {
904
905 #ifdef USE_RTS
906 if( lp->useRTS == 1 ) {
907 DBG_PRINT( "RTS: We're getting an Rx...\n" );
908 return -EIO;
909 }
910 #endif /* USE_RTS */
911
912 /* Read the HFS_STAT register from the lookahead buffer */
913 hfs_stat = (hcf_16)(( lp->lookAheadBuf[HFS_STAT] ) |
914 ( lp->lookAheadBuf[HFS_STAT + 1] << 8 ));
915
916 /* Make sure the frame isn't bad */
917 if(( hfs_stat & HFS_STAT_ERR ) != HCF_SUCCESS ) {
918 DBG_WARNING( DbgInfo, "HFS_STAT_ERROR (0x%x) in Rx Packet\n",
919 lp->lookAheadBuf[HFS_STAT] );
920 return -EIO;
921 }
922
923 /* Determine what port this packet is for */
924 port = ( hfs_stat >> 8 ) & 0x0007;
925 DBG_RX( DbgInfo, "Rx frame for port %d\n", port );
926
927 pktlen = lp->hcfCtx.IFB_RxLen;
928 if (pktlen != 0) {
929 skb = ALLOC_SKB(pktlen);
930 if (skb != NULL) {
931 /* Set the netdev based on the port */
932 switch( port ) {
933 #ifdef USE_WDS
934 case 1:
935 case 2:
936 case 3:
937 case 4:
938 case 5:
939 case 6:
940 skb->dev = lp->wds_port[port-1].dev;
941 break;
942 #endif /* USE_WDS */
943
944 case 0:
945 default:
946 skb->dev = dev;
947 break;
948 }
949
950 desc = &( lp->desc_rx );
951
952 desc->next_desc_addr = NULL;
953
954 /*
955 #define BLOCK_INPUT(buf, len) \
956 desc->buf_addr = buf; \
957 desc->BUF_SIZE = len; \
958 status = hcf_rcv_msg(&(lp->hcfCtx), desc, 0)
959 */
960
961 GET_PACKET( skb->dev, skb, pktlen );
962
963 if( status == HCF_SUCCESS ) {
964 netif_rx( skb );
965
966 if( port == 0 ) {
967 lp->stats.rx_packets++;
968 lp->stats.rx_bytes += pktlen;
969 }
970 #ifdef USE_WDS
971 else
972 {
973 lp->wds_port[port-1].stats.rx_packets++;
974 lp->wds_port[port-1].stats.rx_bytes += pktlen;
975 }
976 #endif /* USE_WDS */
977
978 dev->last_rx = jiffies;
979
980 #ifdef WIRELESS_EXT
981 #ifdef WIRELESS_SPY
982 if( lp->spydata.spy_number > 0 ) {
983 char *srcaddr = skb->mac.raw + MAC_ADDR_SIZE;
984
985 wl_spy_gather( dev, srcaddr );
986 }
987 #endif /* WIRELESS_SPY */
988 #endif /* WIRELESS_EXT */
989 } else {
990 DBG_ERROR( DbgInfo, "Rx request to card FAILED\n" );
991
992 if( port == 0 ) {
993 lp->stats.rx_dropped++;
994 }
995 #ifdef USE_WDS
996 else
997 {
998 lp->wds_port[port-1].stats.rx_dropped++;
999 }
1000 #endif /* USE_WDS */
1001
1002 dev_kfree_skb( skb );
1003 }
1004 } else {
1005 DBG_ERROR( DbgInfo, "Could not alloc skb\n" );
1006
1007 if( port == 0 ) {
1008 lp->stats.rx_dropped++;
1009 }
1010 #ifdef USE_WDS
1011 else
1012 {
1013 lp->wds_port[port-1].stats.rx_dropped++;
1014 }
1015 #endif /* USE_WDS */
1016 }
1017 }
1018 }
1019
1020 return 0;
1021 } // wl_rx
1022 /*============================================================================*/
1023
1024 /*******************************************************************************
1025 * wl_multicast()
1026 *******************************************************************************
1027 *
1028 * DESCRIPTION:
1029 *
1030 * Function to handle multicast packets
1031 *
1032 * PARAMETERS:
1033 *
1034 * dev - a pointer to the device's net_device structure.
1035 *
1036 * RETURNS:
1037 *
1038 * N/A
1039 *
1040 ******************************************************************************/
1041 #ifdef NEW_MULTICAST
1042
wl_multicast(struct net_device * dev)1043 void wl_multicast( struct net_device *dev )
1044 {
1045 #if 1 //;? (HCF_TYPE) & HCF_TYPE_STA //;?should we return an error status in AP mode
1046 //;?seems reasonable that even an AP-only driver could afford this small additional footprint
1047
1048 int x;
1049 struct netdev_hw_addr *ha;
1050 struct wl_private *lp = wl_priv(dev);
1051 unsigned long flags;
1052 /*------------------------------------------------------------------------*/
1053
1054 DBG_FUNC( "wl_multicast" );
1055 DBG_ENTER( DbgInfo );
1056 DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
1057
1058 if( !wl_adapter_is_open( dev )) {
1059 DBG_LEAVE( DbgInfo );
1060 return;
1061 }
1062
1063 #if DBG
1064 if( DBG_FLAGS( DbgInfo ) & DBG_PARAM_ON ) {
1065 DBG_PRINT(" flags: %s%s%s\n",
1066 ( dev->flags & IFF_PROMISC ) ? "Promiscous " : "",
1067 ( dev->flags & IFF_MULTICAST ) ? "Multicast " : "",
1068 ( dev->flags & IFF_ALLMULTI ) ? "All-Multicast" : "" );
1069
1070 DBG_PRINT( " mc_count: %d\n", netdev_mc_count(dev));
1071
1072 netdev_for_each_mc_addr(ha, dev)
1073 DBG_PRINT(" %pM (%d)\n", ha->addr, dev->addr_len);
1074 }
1075 #endif /* DBG */
1076
1077 if(!( lp->flags & WVLAN2_UIL_BUSY )) {
1078
1079 #ifdef USE_RTS
1080 if( lp->useRTS == 1 ) {
1081 DBG_TRACE( DbgInfo, "Skipping multicast, in RTS mode\n" );
1082
1083 DBG_LEAVE( DbgInfo );
1084 return;
1085 }
1086 #endif /* USE_RTS */
1087
1088 wl_lock( lp, &flags );
1089 wl_act_int_off( lp );
1090
1091 if ( CNV_INT_TO_LITTLE( lp->hcfCtx.IFB_FWIdentity.comp_id ) == COMP_ID_FW_STA ) {
1092 if( dev->flags & IFF_PROMISC ) {
1093 /* Enable promiscuous mode */
1094 lp->ltvRecord.len = 2;
1095 lp->ltvRecord.typ = CFG_PROMISCUOUS_MODE;
1096 lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 1 );
1097 DBG_PRINT( "Enabling Promiscuous mode (IFF_PROMISC)\n" );
1098 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1099 }
1100 else if ((netdev_mc_count(dev) > HCF_MAX_MULTICAST) ||
1101 ( dev->flags & IFF_ALLMULTI )) {
1102 /* Shutting off this filter will enable all multicast frames to
1103 be sent up from the device; however, this is a static RID, so
1104 a call to wl_apply() is needed */
1105 lp->ltvRecord.len = 2;
1106 lp->ltvRecord.typ = CFG_CNF_RX_ALL_GROUP_ADDR;
1107 lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 0 );
1108 DBG_PRINT( "Enabling all multicast mode (IFF_ALLMULTI)\n" );
1109 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1110 wl_apply( lp );
1111 }
1112 else if (!netdev_mc_empty(dev)) {
1113 /* Set the multicast addresses */
1114 lp->ltvRecord.len = ( netdev_mc_count(dev) * 3 ) + 1;
1115 lp->ltvRecord.typ = CFG_GROUP_ADDR;
1116
1117 x = 0;
1118 netdev_for_each_mc_addr(ha, dev)
1119 memcpy(&(lp->ltvRecord.u.u8[x++ * ETH_ALEN]),
1120 ha->addr, ETH_ALEN);
1121 DBG_PRINT( "Setting multicast list\n" );
1122 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1123 } else {
1124 /* Disable promiscuous mode */
1125 lp->ltvRecord.len = 2;
1126 lp->ltvRecord.typ = CFG_PROMISCUOUS_MODE;
1127 lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 0 );
1128 DBG_PRINT( "Disabling Promiscuous mode\n" );
1129 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1130
1131 /* Disable multicast mode */
1132 lp->ltvRecord.len = 2;
1133 lp->ltvRecord.typ = CFG_GROUP_ADDR;
1134 DBG_PRINT( "Disabling Multicast mode\n" );
1135 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1136
1137 /* Turning on this filter will prevent all multicast frames from
1138 being sent up from the device; however, this is a static RID,
1139 so a call to wl_apply() is needed */
1140 lp->ltvRecord.len = 2;
1141 lp->ltvRecord.typ = CFG_CNF_RX_ALL_GROUP_ADDR;
1142 lp->ltvRecord.u.u16[0] = CNV_INT_TO_LITTLE( 1 );
1143 DBG_PRINT( "Disabling all multicast mode (IFF_ALLMULTI)\n" );
1144 hcf_put_info( &( lp->hcfCtx ), (LTVP)&( lp->ltvRecord ));
1145 wl_apply( lp );
1146 }
1147 }
1148 wl_act_int_on( lp );
1149 wl_unlock( lp, &flags );
1150 }
1151 DBG_LEAVE( DbgInfo );
1152 #endif /* HCF_STA */
1153 } // wl_multicast
1154 /*============================================================================*/
1155
1156 #else /* NEW_MULTICAST */
1157
wl_multicast(struct net_device * dev,int num_addrs,void * addrs)1158 void wl_multicast( struct net_device *dev, int num_addrs, void *addrs )
1159 {
1160 DBG_FUNC( "wl_multicast");
1161 DBG_ENTER(DbgInfo);
1162
1163 DBG_PARAM( DbgInfo, "dev", "%s (0x%p)", dev->name, dev );
1164 DBG_PARAM( DbgInfo, "num_addrs", "%d", num_addrs );
1165 DBG_PARAM( DbgInfo, "addrs", "0x%p", addrs );
1166
1167 #error Obsolete set multicast interface!
1168
1169 DBG_LEAVE( DbgInfo );
1170 } // wl_multicast
1171 /*============================================================================*/
1172
1173 #endif /* NEW_MULTICAST */
1174
1175 static const struct net_device_ops wl_netdev_ops =
1176 {
1177 .ndo_start_xmit = &wl_tx_port0,
1178
1179 .ndo_set_config = &wl_config,
1180 .ndo_get_stats = &wl_stats,
1181 .ndo_set_rx_mode = &wl_multicast,
1182
1183 .ndo_init = &wl_insert,
1184 .ndo_open = &wl_adapter_open,
1185 .ndo_stop = &wl_adapter_close,
1186 .ndo_do_ioctl = &wl_ioctl,
1187
1188 .ndo_tx_timeout = &wl_tx_timeout,
1189
1190 #ifdef CONFIG_NET_POLL_CONTROLLER
1191 .ndo_poll_controller = wl_poll,
1192 #endif
1193 };
1194
1195 /*******************************************************************************
1196 * wl_device_alloc()
1197 *******************************************************************************
1198 *
1199 * DESCRIPTION:
1200 *
1201 * Create instances of net_device and wl_private for the new adapter
1202 * and register the device's entry points in the net_device structure.
1203 *
1204 * PARAMETERS:
1205 *
1206 * N/A
1207 *
1208 * RETURNS:
1209 *
1210 * a pointer to an allocated and initialized net_device struct for this
1211 * device.
1212 *
1213 ******************************************************************************/
wl_device_alloc(void)1214 struct net_device * wl_device_alloc( void )
1215 {
1216 struct net_device *dev = NULL;
1217 struct wl_private *lp = NULL;
1218 /*------------------------------------------------------------------------*/
1219
1220 DBG_FUNC( "wl_device_alloc" );
1221 DBG_ENTER( DbgInfo );
1222
1223 /* Alloc a net_device struct */
1224 dev = alloc_etherdev(sizeof(struct wl_private));
1225 if (!dev)
1226 return NULL;
1227
1228 /* Initialize the 'next' pointer in the struct. Currently only used for PCI,
1229 but do it here just in case it's used for other buses in the future */
1230 lp = wl_priv(dev);
1231
1232
1233 /* Check MTU */
1234 if( dev->mtu > MTU_MAX )
1235 {
1236 DBG_WARNING( DbgInfo, "%s: MTU set too high, limiting to %d.\n",
1237 dev->name, MTU_MAX );
1238 dev->mtu = MTU_MAX;
1239 }
1240
1241 /* Setup the function table in the device structure. */
1242
1243 dev->wireless_handlers = (struct iw_handler_def *)&wl_iw_handler_def;
1244 lp->wireless_data.spy_data = &lp->spy_data;
1245 dev->wireless_data = &lp->wireless_data;
1246
1247 dev->netdev_ops = &wl_netdev_ops;
1248
1249 dev->watchdog_timeo = TX_TIMEOUT;
1250
1251 dev->ethtool_ops = &wl_ethtool_ops;
1252
1253 netif_stop_queue( dev );
1254
1255 /* Allocate virutal devices for WDS support if needed */
1256 WL_WDS_DEVICE_ALLOC( lp );
1257
1258 DBG_LEAVE( DbgInfo );
1259 return dev;
1260 } // wl_device_alloc
1261 /*============================================================================*/
1262
1263 /*******************************************************************************
1264 * wl_device_dealloc()
1265 *******************************************************************************
1266 *
1267 * DESCRIPTION:
1268 *
1269 * Free instances of net_device and wl_private strcutres for an adapter
1270 * and perform basic cleanup.
1271 *
1272 * PARAMETERS:
1273 *
1274 * dev - a pointer to the device's net_device structure.
1275 *
1276 * RETURNS:
1277 *
1278 * N/A
1279 *
1280 ******************************************************************************/
wl_device_dealloc(struct net_device * dev)1281 void wl_device_dealloc( struct net_device *dev )
1282 {
1283 // struct wl_private *lp = wl_priv(dev);
1284 /*------------------------------------------------------------------------*/
1285
1286 DBG_FUNC( "wl_device_dealloc" );
1287 DBG_ENTER( DbgInfo );
1288
1289 /* Dealloc the WDS ports */
1290 WL_WDS_DEVICE_DEALLOC( lp );
1291
1292 free_netdev( dev );
1293
1294 DBG_LEAVE( DbgInfo );
1295 return;
1296 } // wl_device_dealloc
1297 /*============================================================================*/
1298
1299 /*******************************************************************************
1300 * wl_tx_port0()
1301 *******************************************************************************
1302 *
1303 * DESCRIPTION:
1304 *
1305 * The handler routine for Tx over HCF_PORT_0.
1306 *
1307 * PARAMETERS:
1308 *
1309 * skb - a pointer to the sk_buff to transmit.
1310 * dev - a pointer to a net_device structure representing HCF_PORT_0.
1311 *
1312 * RETURNS:
1313 *
1314 * N/A
1315 *
1316 ******************************************************************************/
wl_tx_port0(struct sk_buff * skb,struct net_device * dev)1317 int wl_tx_port0( struct sk_buff *skb, struct net_device *dev )
1318 {
1319 DBG_TX( DbgInfo, "Tx on Port 0\n" );
1320
1321 return wl_tx( skb, dev, HCF_PORT_0 );
1322 #ifdef ENABLE_DMA
1323 return wl_tx_dma( skb, dev, HCF_PORT_0 );
1324 #endif
1325 } // wl_tx_port0
1326 /*============================================================================*/
1327
1328 #ifdef USE_WDS
1329
1330 /*******************************************************************************
1331 * wl_tx_port1()
1332 *******************************************************************************
1333 *
1334 * DESCRIPTION:
1335 *
1336 * The handler routine for Tx over HCF_PORT_1.
1337 *
1338 * PARAMETERS:
1339 *
1340 * skb - a pointer to the sk_buff to transmit.
1341 * dev - a pointer to a net_device structure representing HCF_PORT_1.
1342 *
1343 * RETURNS:
1344 *
1345 * N/A
1346 *
1347 ******************************************************************************/
wl_tx_port1(struct sk_buff * skb,struct net_device * dev)1348 int wl_tx_port1( struct sk_buff *skb, struct net_device *dev )
1349 {
1350 DBG_TX( DbgInfo, "Tx on Port 1\n" );
1351 return wl_tx( skb, dev, HCF_PORT_1 );
1352 } // wl_tx_port1
1353 /*============================================================================*/
1354
1355 /*******************************************************************************
1356 * wl_tx_port2()
1357 *******************************************************************************
1358 *
1359 * DESCRIPTION:
1360 *
1361 * The handler routine for Tx over HCF_PORT_2.
1362 *
1363 * PARAMETERS:
1364 *
1365 * skb - a pointer to the sk_buff to transmit.
1366 * dev - a pointer to a net_device structure representing HCF_PORT_2.
1367 *
1368 * RETURNS:
1369 *
1370 * N/A
1371 *
1372 ******************************************************************************/
wl_tx_port2(struct sk_buff * skb,struct net_device * dev)1373 int wl_tx_port2( struct sk_buff *skb, struct net_device *dev )
1374 {
1375 DBG_TX( DbgInfo, "Tx on Port 2\n" );
1376 return wl_tx( skb, dev, HCF_PORT_2 );
1377 } // wl_tx_port2
1378 /*============================================================================*/
1379
1380 /*******************************************************************************
1381 * wl_tx_port3()
1382 *******************************************************************************
1383 *
1384 * DESCRIPTION:
1385 *
1386 * The handler routine for Tx over HCF_PORT_3.
1387 *
1388 * PARAMETERS:
1389 *
1390 * skb - a pointer to the sk_buff to transmit.
1391 * dev - a pointer to a net_device structure representing HCF_PORT_3.
1392 *
1393 * RETURNS:
1394 *
1395 * N/A
1396 *
1397 ******************************************************************************/
wl_tx_port3(struct sk_buff * skb,struct net_device * dev)1398 int wl_tx_port3( struct sk_buff *skb, struct net_device *dev )
1399 {
1400 DBG_TX( DbgInfo, "Tx on Port 3\n" );
1401 return wl_tx( skb, dev, HCF_PORT_3 );
1402 } // wl_tx_port3
1403 /*============================================================================*/
1404
1405 /*******************************************************************************
1406 * wl_tx_port4()
1407 *******************************************************************************
1408 *
1409 * DESCRIPTION:
1410 *
1411 * The handler routine for Tx over HCF_PORT_4.
1412 *
1413 * PARAMETERS:
1414 *
1415 * skb - a pointer to the sk_buff to transmit.
1416 * dev - a pointer to a net_device structure representing HCF_PORT_4.
1417 *
1418 * RETURNS:
1419 *
1420 * N/A
1421 *
1422 ******************************************************************************/
wl_tx_port4(struct sk_buff * skb,struct net_device * dev)1423 int wl_tx_port4( struct sk_buff *skb, struct net_device *dev )
1424 {
1425 DBG_TX( DbgInfo, "Tx on Port 4\n" );
1426 return wl_tx( skb, dev, HCF_PORT_4 );
1427 } // wl_tx_port4
1428 /*============================================================================*/
1429
1430 /*******************************************************************************
1431 * wl_tx_port5()
1432 *******************************************************************************
1433 *
1434 * DESCRIPTION:
1435 *
1436 * The handler routine for Tx over HCF_PORT_5.
1437 *
1438 * PARAMETERS:
1439 *
1440 * skb - a pointer to the sk_buff to transmit.
1441 * dev - a pointer to a net_device structure representing HCF_PORT_5.
1442 *
1443 * RETURNS:
1444 *
1445 * N/A
1446 *
1447 ******************************************************************************/
wl_tx_port5(struct sk_buff * skb,struct net_device * dev)1448 int wl_tx_port5( struct sk_buff *skb, struct net_device *dev )
1449 {
1450 DBG_TX( DbgInfo, "Tx on Port 5\n" );
1451 return wl_tx( skb, dev, HCF_PORT_5 );
1452 } // wl_tx_port5
1453 /*============================================================================*/
1454
1455 /*******************************************************************************
1456 * wl_tx_port6()
1457 *******************************************************************************
1458 *
1459 * DESCRIPTION:
1460 *
1461 * The handler routine for Tx over HCF_PORT_6.
1462 *
1463 * PARAMETERS:
1464 *
1465 * skb - a pointer to the sk_buff to transmit.
1466 * dev - a pointer to a net_device structure representing HCF_PORT_6.
1467 *
1468 * RETURNS:
1469 *
1470 * N/A
1471 *
1472 ******************************************************************************/
wl_tx_port6(struct sk_buff * skb,struct net_device * dev)1473 int wl_tx_port6( struct sk_buff *skb, struct net_device *dev )
1474 {
1475 DBG_TX( DbgInfo, "Tx on Port 6\n" );
1476 return wl_tx( skb, dev, HCF_PORT_6 );
1477 } // wl_tx_port6
1478 /*============================================================================*/
1479
1480 /*******************************************************************************
1481 * wl_wds_device_alloc()
1482 *******************************************************************************
1483 *
1484 * DESCRIPTION:
1485 *
1486 * Create instances of net_device to represent the WDS ports, and register
1487 * the device's entry points in the net_device structure.
1488 *
1489 * PARAMETERS:
1490 *
1491 * lp - a pointer to the device's private adapter structure
1492 *
1493 * RETURNS:
1494 *
1495 * N/A, but will place pointers to the allocated and initialized net_device
1496 * structs in the private adapter structure.
1497 *
1498 ******************************************************************************/
wl_wds_device_alloc(struct wl_private * lp)1499 void wl_wds_device_alloc( struct wl_private *lp )
1500 {
1501 int count;
1502 /*------------------------------------------------------------------------*/
1503
1504 DBG_FUNC( "wl_wds_device_alloc" );
1505 DBG_ENTER( DbgInfo );
1506
1507 /* WDS support requires additional net_device structs to be allocated,
1508 so that user space apps can use these virtual devices to specify the
1509 port on which to Tx/Rx */
1510 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1511 struct net_device *dev_wds = NULL;
1512
1513 dev_wds = kmalloc( sizeof( struct net_device ), GFP_KERNEL );
1514 memset( dev_wds, 0, sizeof( struct net_device ));
1515
1516 ether_setup( dev_wds );
1517
1518 lp->wds_port[count].dev = dev_wds;
1519
1520 /* Re-use wl_init for all the devices, as it currently does nothing, but
1521 is required. Re-use the stats/tx_timeout handler for all as well; the
1522 WDS port which is requesting these operations can be determined by
1523 the net_device pointer. Set the private member of all devices to point
1524 to the same net_device struct; that way, all information gets
1525 funnelled through the one "real" net_device. Name the WDS ports
1526 "wds<n>" */
1527 lp->wds_port[count].dev->init = &wl_init;
1528 lp->wds_port[count].dev->get_stats = &wl_stats;
1529 lp->wds_port[count].dev->tx_timeout = &wl_tx_timeout;
1530 lp->wds_port[count].dev->watchdog_timeo = TX_TIMEOUT;
1531 lp->wds_port[count].dev->priv = lp;
1532
1533 sprintf( lp->wds_port[count].dev->name, "wds%d", count );
1534 }
1535
1536 /* Register the Tx handlers */
1537 lp->wds_port[0].dev->hard_start_xmit = &wl_tx_port1;
1538 lp->wds_port[1].dev->hard_start_xmit = &wl_tx_port2;
1539 lp->wds_port[2].dev->hard_start_xmit = &wl_tx_port3;
1540 lp->wds_port[3].dev->hard_start_xmit = &wl_tx_port4;
1541 lp->wds_port[4].dev->hard_start_xmit = &wl_tx_port5;
1542 lp->wds_port[5].dev->hard_start_xmit = &wl_tx_port6;
1543
1544 WL_WDS_NETIF_STOP_QUEUE( lp );
1545
1546 DBG_LEAVE( DbgInfo );
1547 return;
1548 } // wl_wds_device_alloc
1549 /*============================================================================*/
1550
1551 /*******************************************************************************
1552 * wl_wds_device_dealloc()
1553 *******************************************************************************
1554 *
1555 * DESCRIPTION:
1556 *
1557 * Free instances of net_device structures used to support WDS.
1558 *
1559 * PARAMETERS:
1560 *
1561 * lp - a pointer to the device's private adapter structure
1562 *
1563 * RETURNS:
1564 *
1565 * N/A
1566 *
1567 ******************************************************************************/
wl_wds_device_dealloc(struct wl_private * lp)1568 void wl_wds_device_dealloc( struct wl_private *lp )
1569 {
1570 int count;
1571 /*------------------------------------------------------------------------*/
1572
1573 DBG_FUNC( "wl_wds_device_dealloc" );
1574 DBG_ENTER( DbgInfo );
1575
1576 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1577 struct net_device *dev_wds = NULL;
1578
1579 dev_wds = lp->wds_port[count].dev;
1580
1581 if( dev_wds != NULL ) {
1582 if( dev_wds->flags & IFF_UP ) {
1583 dev_close( dev_wds );
1584 dev_wds->flags &= ~( IFF_UP | IFF_RUNNING );
1585 }
1586
1587 free_netdev(dev_wds);
1588 lp->wds_port[count].dev = NULL;
1589 }
1590 }
1591
1592 DBG_LEAVE( DbgInfo );
1593 return;
1594 } // wl_wds_device_dealloc
1595 /*============================================================================*/
1596
1597 /*******************************************************************************
1598 * wl_wds_netif_start_queue()
1599 *******************************************************************************
1600 *
1601 * DESCRIPTION:
1602 *
1603 * Used to start the netif queues of all the "virtual" network devices
1604 * which repesent the WDS ports.
1605 *
1606 * PARAMETERS:
1607 *
1608 * lp - a pointer to the device's private adapter structure
1609 *
1610 * RETURNS:
1611 *
1612 * N/A
1613 *
1614 ******************************************************************************/
wl_wds_netif_start_queue(struct wl_private * lp)1615 void wl_wds_netif_start_queue( struct wl_private *lp )
1616 {
1617 int count;
1618 /*------------------------------------------------------------------------*/
1619
1620 if( lp != NULL ) {
1621 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1622 if( lp->wds_port[count].is_registered &&
1623 lp->wds_port[count].netif_queue_on == FALSE ) {
1624 netif_start_queue( lp->wds_port[count].dev );
1625 lp->wds_port[count].netif_queue_on = TRUE;
1626 }
1627 }
1628 }
1629
1630 return;
1631 } // wl_wds_netif_start_queue
1632 /*============================================================================*/
1633
1634 /*******************************************************************************
1635 * wl_wds_netif_stop_queue()
1636 *******************************************************************************
1637 *
1638 * DESCRIPTION:
1639 *
1640 * Used to stop the netif queues of all the "virtual" network devices
1641 * which repesent the WDS ports.
1642 *
1643 * PARAMETERS:
1644 *
1645 * lp - a pointer to the device's private adapter structure
1646 *
1647 * RETURNS:
1648 *
1649 * N/A
1650 *
1651 ******************************************************************************/
wl_wds_netif_stop_queue(struct wl_private * lp)1652 void wl_wds_netif_stop_queue( struct wl_private *lp )
1653 {
1654 int count;
1655 /*------------------------------------------------------------------------*/
1656
1657 if( lp != NULL ) {
1658 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1659 if( lp->wds_port[count].is_registered &&
1660 lp->wds_port[count].netif_queue_on == TRUE ) {
1661 netif_stop_queue( lp->wds_port[count].dev );
1662 lp->wds_port[count].netif_queue_on = FALSE;
1663 }
1664 }
1665 }
1666
1667 return;
1668 } // wl_wds_netif_stop_queue
1669 /*============================================================================*/
1670
1671 /*******************************************************************************
1672 * wl_wds_netif_wake_queue()
1673 *******************************************************************************
1674 *
1675 * DESCRIPTION:
1676 *
1677 * Used to wake the netif queues of all the "virtual" network devices
1678 * which repesent the WDS ports.
1679 *
1680 * PARAMETERS:
1681 *
1682 * lp - a pointer to the device's private adapter structure
1683 *
1684 * RETURNS:
1685 *
1686 * N/A
1687 *
1688 ******************************************************************************/
wl_wds_netif_wake_queue(struct wl_private * lp)1689 void wl_wds_netif_wake_queue( struct wl_private *lp )
1690 {
1691 int count;
1692 /*------------------------------------------------------------------------*/
1693
1694 if( lp != NULL ) {
1695 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1696 if( lp->wds_port[count].is_registered &&
1697 lp->wds_port[count].netif_queue_on == FALSE ) {
1698 netif_wake_queue( lp->wds_port[count].dev );
1699 lp->wds_port[count].netif_queue_on = TRUE;
1700 }
1701 }
1702 }
1703
1704 return;
1705 } // wl_wds_netif_wake_queue
1706 /*============================================================================*/
1707
1708 /*******************************************************************************
1709 * wl_wds_netif_carrier_on()
1710 *******************************************************************************
1711 *
1712 * DESCRIPTION:
1713 *
1714 * Used to signal the network layer that carrier is present on all of the
1715 * "virtual" network devices which repesent the WDS ports.
1716 *
1717 * PARAMETERS:
1718 *
1719 * lp - a pointer to the device's private adapter structure
1720 *
1721 * RETURNS:
1722 *
1723 * N/A
1724 *
1725 ******************************************************************************/
wl_wds_netif_carrier_on(struct wl_private * lp)1726 void wl_wds_netif_carrier_on( struct wl_private *lp )
1727 {
1728 int count;
1729 /*------------------------------------------------------------------------*/
1730
1731 if( lp != NULL ) {
1732 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1733 if( lp->wds_port[count].is_registered ) {
1734 netif_carrier_on( lp->wds_port[count].dev );
1735 }
1736 }
1737 }
1738
1739 return;
1740 } // wl_wds_netif_carrier_on
1741 /*============================================================================*/
1742
1743 /*******************************************************************************
1744 * wl_wds_netif_carrier_off()
1745 *******************************************************************************
1746 *
1747 * DESCRIPTION:
1748 *
1749 * Used to signal the network layer that carrier is NOT present on all of
1750 * the "virtual" network devices which repesent the WDS ports.
1751 *
1752 * PARAMETERS:
1753 *
1754 * lp - a pointer to the device's private adapter structure
1755 *
1756 * RETURNS:
1757 *
1758 * N/A
1759 *
1760 ******************************************************************************/
wl_wds_netif_carrier_off(struct wl_private * lp)1761 void wl_wds_netif_carrier_off( struct wl_private *lp )
1762 {
1763 int count;
1764 /*------------------------------------------------------------------------*/
1765
1766 if( lp != NULL ) {
1767 for( count = 0; count < NUM_WDS_PORTS; count++ ) {
1768 if( lp->wds_port[count].is_registered ) {
1769 netif_carrier_off( lp->wds_port[count].dev );
1770 }
1771 }
1772 }
1773
1774 return;
1775 } // wl_wds_netif_carrier_off
1776 /*============================================================================*/
1777
1778 #endif /* USE_WDS */
1779
1780 #ifdef ENABLE_DMA
1781 /*******************************************************************************
1782 * wl_send_dma()
1783 *******************************************************************************
1784 *
1785 * DESCRIPTION:
1786 *
1787 * The routine which performs data transmits when using busmaster DMA.
1788 *
1789 * PARAMETERS:
1790 *
1791 * lp - a pointer to the device's wl_private struct.
1792 * skb - a pointer to the network layer's data buffer.
1793 * port - the Hermes port on which to transmit.
1794 *
1795 * RETURNS:
1796 *
1797 * 0 on success
1798 * 1 on error
1799 *
1800 ******************************************************************************/
wl_send_dma(struct wl_private * lp,struct sk_buff * skb,int port)1801 int wl_send_dma( struct wl_private *lp, struct sk_buff *skb, int port )
1802 {
1803 int len;
1804 DESC_STRCT *desc = NULL;
1805 DESC_STRCT *desc_next = NULL;
1806 /*------------------------------------------------------------------------*/
1807
1808 DBG_FUNC( "wl_send_dma" );
1809
1810 if( lp == NULL )
1811 {
1812 DBG_ERROR( DbgInfo, "Private adapter struct is NULL\n" );
1813 return FALSE;
1814 }
1815
1816 if( lp->dev == NULL )
1817 {
1818 DBG_ERROR( DbgInfo, "net_device struct in wl_private is NULL\n" );
1819 return FALSE;
1820 }
1821
1822 /* AGAIN, ALL THE QUEUEING DONE HERE IN I/O MODE IS NOT PERFORMED */
1823
1824 if( skb == NULL )
1825 {
1826 DBG_WARNING (DbgInfo, "Nothing to send.\n");
1827 return FALSE;
1828 }
1829
1830 len = skb->len;
1831
1832 /* Get a free descriptor */
1833 desc = wl_pci_dma_get_tx_packet( lp );
1834
1835 if( desc == NULL )
1836 {
1837 if( lp->netif_queue_on == TRUE ) {
1838 netif_stop_queue( lp->dev );
1839 WL_WDS_NETIF_STOP_QUEUE( lp );
1840 lp->netif_queue_on = FALSE;
1841
1842 dev_kfree_skb( skb );
1843 return 0;
1844 }
1845 }
1846
1847 SET_BUF_CNT( desc, /*HCF_DMA_FD_CNT*/HFS_ADDR_DEST );
1848 SET_BUF_SIZE( desc, HCF_DMA_TX_BUF1_SIZE );
1849
1850 desc_next = desc->next_desc_addr;
1851
1852 if( desc_next->buf_addr == NULL )
1853 {
1854 DBG_ERROR( DbgInfo, "DMA descriptor buf_addr is NULL\n" );
1855 return FALSE;
1856 }
1857
1858 /* Copy the payload into the DMA packet */
1859 memcpy( desc_next->buf_addr, skb->data, len );
1860
1861 SET_BUF_CNT( desc_next, len );
1862 SET_BUF_SIZE( desc_next, HCF_MAX_PACKET_SIZE );
1863
1864 hcf_dma_tx_put( &( lp->hcfCtx ), desc, 0 );
1865
1866 /* Free the skb and perform queue cleanup, as the buffer was
1867 transmitted successfully */
1868 dev_kfree_skb( skb );
1869
1870 return TRUE;
1871 } // wl_send_dma
1872 /*============================================================================*/
1873
1874 /*******************************************************************************
1875 * wl_rx_dma()
1876 *******************************************************************************
1877 *
1878 * DESCRIPTION:
1879 *
1880 * The routine which performs data reception when using busmaster DMA.
1881 *
1882 * PARAMETERS:
1883 *
1884 * dev - a pointer to the device's net_device structure.
1885 *
1886 * RETURNS:
1887 *
1888 * 0 on success
1889 * 1 on error
1890 *
1891 ******************************************************************************/
wl_rx_dma(struct net_device * dev)1892 int wl_rx_dma( struct net_device *dev )
1893 {
1894 int port;
1895 hcf_16 pktlen;
1896 hcf_16 hfs_stat;
1897 struct sk_buff *skb;
1898 struct wl_private *lp = NULL;
1899 DESC_STRCT *desc, *desc_next;
1900 //CFG_MB_INFO_RANGE2_STRCT x;
1901 /*------------------------------------------------------------------------*/
1902
1903 DBG_FUNC("wl_rx")
1904 DBG_PARAM(DbgInfo, "dev", "%s (0x%p)", dev->name, dev);
1905
1906 if((( lp = dev->priv ) != NULL ) &&
1907 !( lp->flags & WVLAN2_UIL_BUSY )) {
1908
1909 #ifdef USE_RTS
1910 if( lp->useRTS == 1 ) {
1911 DBG_PRINT( "RTS: We're getting an Rx...\n" );
1912 return -EIO;
1913 }
1914 #endif /* USE_RTS */
1915
1916 //if( lp->dma.status == 0 )
1917 //{
1918 desc = hcf_dma_rx_get( &( lp->hcfCtx ));
1919
1920 if( desc != NULL )
1921 {
1922 /* Check and see if we rcvd. a WMP frame */
1923 /*
1924 if((( *(hcf_8 *)&desc->buf_addr[HFS_STAT] ) &
1925 ( HFS_STAT_MSG_TYPE | HFS_STAT_ERR )) == HFS_STAT_WMP_MSG )
1926 {
1927 DBG_TRACE( DbgInfo, "Got a WMP frame\n" );
1928
1929 x.len = sizeof( CFG_MB_INFO_RANGE2_STRCT ) / sizeof( hcf_16 );
1930 x.typ = CFG_MB_INFO;
1931 x.base_typ = CFG_WMP;
1932 x.frag_cnt = 2;
1933 x.frag_buf[0].frag_len = GET_BUF_CNT( descp ) / sizeof( hcf_16 );
1934 x.frag_buf[0].frag_addr = (hcf_8 *) descp->buf_addr ;
1935 x.frag_buf[1].frag_len = ( GET_BUF_CNT( descp->next_desc_addr ) + 1 ) / sizeof( hcf_16 );
1936 x.frag_buf[1].frag_addr = (hcf_8 *) descp->next_desc_addr->buf_addr ;
1937
1938 hcf_put_info( &( lp->hcfCtx ), (LTVP)&x );
1939 }
1940 */
1941
1942 desc_next = desc->next_desc_addr;
1943
1944 /* Make sure the buffer isn't empty */
1945 if( GET_BUF_CNT( desc ) == 0 ) {
1946 DBG_WARNING( DbgInfo, "Buffer is empty!\n" );
1947
1948 /* Give the descriptor back to the HCF */
1949 hcf_dma_rx_put( &( lp->hcfCtx ), desc );
1950 return -EIO;
1951 }
1952
1953 /* Read the HFS_STAT register from the lookahead buffer */
1954 hfs_stat = (hcf_16)( desc->buf_addr[HFS_STAT/2] );
1955
1956 /* Make sure the frame isn't bad */
1957 if(( hfs_stat & HFS_STAT_ERR ) != HCF_SUCCESS )
1958 {
1959 DBG_WARNING( DbgInfo, "HFS_STAT_ERROR (0x%x) in Rx Packet\n",
1960 desc->buf_addr[HFS_STAT/2] );
1961
1962 /* Give the descriptor back to the HCF */
1963 hcf_dma_rx_put( &( lp->hcfCtx ), desc );
1964 return -EIO;
1965 }
1966
1967 /* Determine what port this packet is for */
1968 port = ( hfs_stat >> 8 ) & 0x0007;
1969 DBG_RX( DbgInfo, "Rx frame for port %d\n", port );
1970
1971 pktlen = GET_BUF_CNT(desc_next);
1972 if (pktlen != 0) {
1973 skb = ALLOC_SKB(pktlen);
1974 if (skb != NULL) {
1975 switch( port ) {
1976 #ifdef USE_WDS
1977 case 1:
1978 case 2:
1979 case 3:
1980 case 4:
1981 case 5:
1982 case 6:
1983 skb->dev = lp->wds_port[port-1].dev;
1984 break;
1985 #endif /* USE_WDS */
1986
1987 case 0:
1988 default:
1989 skb->dev = dev;
1990 break;
1991 }
1992
1993 GET_PACKET_DMA( skb->dev, skb, pktlen );
1994
1995 /* Give the descriptor back to the HCF */
1996 hcf_dma_rx_put( &( lp->hcfCtx ), desc );
1997
1998 netif_rx( skb );
1999
2000 if( port == 0 ) {
2001 lp->stats.rx_packets++;
2002 lp->stats.rx_bytes += pktlen;
2003 }
2004 #ifdef USE_WDS
2005 else
2006 {
2007 lp->wds_port[port-1].stats.rx_packets++;
2008 lp->wds_port[port-1].stats.rx_bytes += pktlen;
2009 }
2010 #endif /* USE_WDS */
2011
2012 dev->last_rx = jiffies;
2013
2014 } else {
2015 DBG_ERROR( DbgInfo, "Could not alloc skb\n" );
2016
2017 if( port == 0 )
2018 {
2019 lp->stats.rx_dropped++;
2020 }
2021 #ifdef USE_WDS
2022 else
2023 {
2024 lp->wds_port[port-1].stats.rx_dropped++;
2025 }
2026 #endif /* USE_WDS */
2027 }
2028 }
2029 }
2030 //}
2031 }
2032
2033 return 0;
2034 } // wl_rx_dma
2035 /*============================================================================*/
2036 #endif // ENABLE_DMA
2037