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[PATCH] libertas: split wlan_add_card()
[deliverable/linux.git] / drivers / net / wireless / libertas / main.c
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
6
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/freezer.h>
10 #include <linux/etherdevice.h>
11 #include <linux/netdevice.h>
12 #include <linux/if_arp.h>
13
14 #include <net/iw_handler.h>
15 #include <net/ieee80211.h>
16
17 #include "host.h"
18 #include "sbi.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "fw.h"
22 #include "wext.h"
23 #include "debugfs.h"
24 #include "assoc.h"
25
26 #define DRIVER_RELEASE_VERSION "320.p0"
27 const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
28 #ifdef DEBUG
29 "-dbg"
30 #endif
31 "";
32
33
34 /* Module parameters */
35 unsigned int libertas_debug = 0;
36 module_param(libertas_debug, int, 0644);
37
38
39
40 #define WLAN_TX_PWR_DEFAULT 20 /*100mW */
41 #define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
42 #define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
43 #define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
44 #define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
45
46 /* Format { channel, frequency (MHz), maxtxpower } */
47 /* band: 'B/G', region: USA FCC/Canada IC */
48 static struct chan_freq_power channel_freq_power_US_BG[] = {
49 {1, 2412, WLAN_TX_PWR_US_DEFAULT},
50 {2, 2417, WLAN_TX_PWR_US_DEFAULT},
51 {3, 2422, WLAN_TX_PWR_US_DEFAULT},
52 {4, 2427, WLAN_TX_PWR_US_DEFAULT},
53 {5, 2432, WLAN_TX_PWR_US_DEFAULT},
54 {6, 2437, WLAN_TX_PWR_US_DEFAULT},
55 {7, 2442, WLAN_TX_PWR_US_DEFAULT},
56 {8, 2447, WLAN_TX_PWR_US_DEFAULT},
57 {9, 2452, WLAN_TX_PWR_US_DEFAULT},
58 {10, 2457, WLAN_TX_PWR_US_DEFAULT},
59 {11, 2462, WLAN_TX_PWR_US_DEFAULT}
60 };
61
62 /* band: 'B/G', region: Europe ETSI */
63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
64 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
65 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
66 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
67 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
68 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
69 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
70 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
71 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
72 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
73 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
74 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
75 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
76 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
77 };
78
79 /* band: 'B/G', region: Spain */
80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
81 {10, 2457, WLAN_TX_PWR_DEFAULT},
82 {11, 2462, WLAN_TX_PWR_DEFAULT}
83 };
84
85 /* band: 'B/G', region: France */
86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
87 {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
88 {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
89 {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
90 {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
91 };
92
93 /* band: 'B/G', region: Japan */
94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
95 {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
96 {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
97 {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
98 {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
99 {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
100 {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
101 {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
102 {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
103 {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
104 {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
105 {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
106 {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
107 {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
108 {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
109 };
110
111 /**
112 * the structure for channel, frequency and power
113 */
114 struct region_cfp_table {
115 u8 region;
116 struct chan_freq_power *cfp_BG;
117 int cfp_no_BG;
118 };
119
120 /**
121 * the structure for the mapping between region and CFP
122 */
123 static struct region_cfp_table region_cfp_table[] = {
124 {0x10, /*US FCC */
125 channel_freq_power_US_BG,
126 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
127 }
128 ,
129 {0x20, /*CANADA IC */
130 channel_freq_power_US_BG,
131 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
132 }
133 ,
134 {0x30, /*EU*/ channel_freq_power_EU_BG,
135 sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
136 }
137 ,
138 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
139 sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
140 }
141 ,
142 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
143 sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
144 }
145 ,
146 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
147 sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
148 }
149 ,
150 /*Add new region here */
151 };
152
153 /**
154 * the rates supported
155 */
156 u8 libertas_supported_rates[G_SUPPORTED_RATES] =
157 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
158 0 };
159
160 /**
161 * the rates supported for ad-hoc G mode
162 */
163 u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
164 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
165 0 };
166
167 /**
168 * the rates supported for ad-hoc B mode
169 */
170 u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
171
172 /**
173 * the table to keep region code
174 */
175 u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
176 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
177
178 static u8 *default_fw_name = "usb8388.bin";
179
180 /**
181 * Attributes exported through sysfs
182 */
183
184 /**
185 * @brief Get function for sysfs attribute libertas_mpp
186 */
187 static ssize_t libertas_mpp_get(struct device * dev,
188 struct device_attribute *attr, char * buf) {
189 struct cmd_ds_mesh_access mesh_access;
190
191 memset(&mesh_access, 0, sizeof(mesh_access));
192 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
193 cmd_mesh_access,
194 cmd_act_mesh_get_mpp,
195 cmd_option_waitforrsp, 0, (void *)&mesh_access);
196
197 return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
198 }
199
200 /**
201 * @brief Set function for sysfs attribute libertas_mpp
202 */
203 static ssize_t libertas_mpp_set(struct device * dev,
204 struct device_attribute *attr, const char * buf, size_t count) {
205 struct cmd_ds_mesh_access mesh_access;
206
207 memset(&mesh_access, 0, sizeof(mesh_access));
208 sscanf(buf, "%d", &(mesh_access.data[0]));
209 libertas_prepare_and_send_command((to_net_dev(dev))->priv,
210 cmd_mesh_access,
211 cmd_act_mesh_set_mpp,
212 cmd_option_waitforrsp, 0, (void *)&mesh_access);
213 return strlen(buf);
214 }
215
216 /**
217 * libertas_mpp attribute to be exported per mshX interface
218 * through sysfs (/sys/class/net/mshX/libertas-mpp)
219 */
220 static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
221 libertas_mpp_set );
222
223 /**
224 * @brief Check if the device can be open and wait if necessary.
225 *
226 * @param dev A pointer to net_device structure
227 * @return 0
228 *
229 * For USB adapter, on some systems the device open handler will be
230 * called before FW ready. Use the following flag check and wait
231 * function to work around the issue.
232 *
233 */
234 static int pre_open_check(struct net_device *dev)
235 {
236 wlan_private *priv = (wlan_private *) dev->priv;
237 wlan_adapter *adapter = priv->adapter;
238 int i = 0;
239
240 while (!adapter->fw_ready && i < 20) {
241 i++;
242 msleep_interruptible(100);
243 }
244 if (!adapter->fw_ready) {
245 lbs_pr_err("firmware not ready\n");
246 return -1;
247 }
248
249 return 0;
250 }
251
252 /**
253 * @brief This function opens the device
254 *
255 * @param dev A pointer to net_device structure
256 * @return 0
257 */
258 static int wlan_dev_open(struct net_device *dev)
259 {
260 wlan_private *priv = (wlan_private *) dev->priv;
261 wlan_adapter *adapter = priv->adapter;
262
263 lbs_deb_enter(LBS_DEB_NET);
264
265 priv->open = 1;
266
267 if (adapter->connect_status == libertas_connected) {
268 netif_carrier_on(priv->wlan_dev.netdev);
269 } else
270 netif_carrier_off(priv->wlan_dev.netdev);
271
272 lbs_deb_leave(LBS_DEB_NET);
273 return 0;
274 }
275 /**
276 * @brief This function opens the mshX interface
277 *
278 * @param dev A pointer to net_device structure
279 * @return 0
280 */
281 static int mesh_open(struct net_device *dev)
282 {
283 wlan_private *priv = (wlan_private *) dev->priv ;
284
285 if (pre_open_check(dev) == -1)
286 return -1;
287 priv->mesh_open = 1 ;
288 netif_start_queue(priv->mesh_dev);
289 if (priv->infra_open == 0)
290 return wlan_dev_open(priv->wlan_dev.netdev) ;
291 return 0;
292 }
293
294 /**
295 * @brief This function opens the ethX interface
296 *
297 * @param dev A pointer to net_device structure
298 * @return 0
299 */
300 static int wlan_open(struct net_device *dev)
301 {
302 wlan_private *priv = (wlan_private *) dev->priv ;
303
304 if(pre_open_check(dev) == -1)
305 return -1;
306 priv->infra_open = 1 ;
307 netif_wake_queue(priv->wlan_dev.netdev);
308 if (priv->open == 0)
309 return wlan_dev_open(priv->wlan_dev.netdev) ;
310 return 0;
311 }
312
313 static int wlan_dev_close(struct net_device *dev)
314 {
315 wlan_private *priv = dev->priv;
316
317 lbs_deb_enter(LBS_DEB_NET);
318
319 netif_carrier_off(priv->wlan_dev.netdev);
320 priv->open = 0;
321
322 lbs_deb_leave(LBS_DEB_NET);
323 return 0;
324 }
325
326 /**
327 * @brief This function closes the mshX interface
328 *
329 * @param dev A pointer to net_device structure
330 * @return 0
331 */
332 static int mesh_close(struct net_device *dev)
333 {
334 wlan_private *priv = (wlan_private *) (dev->priv);
335
336 priv->mesh_open = 0;
337 netif_stop_queue(priv->mesh_dev);
338 if (priv->infra_open == 0)
339 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
340 else
341 return 0;
342 }
343
344 /**
345 * @brief This function closes the ethX interface
346 *
347 * @param dev A pointer to net_device structure
348 * @return 0
349 */
350 static int wlan_close(struct net_device *dev)
351 {
352 wlan_private *priv = (wlan_private *) dev->priv;
353
354 netif_stop_queue(priv->wlan_dev.netdev);
355 priv->infra_open = 0;
356 if (priv->mesh_open == 0)
357 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
358 else
359 return 0;
360 }
361
362
363 static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
364 {
365 int ret = 0;
366 wlan_private *priv = dev->priv;
367
368 lbs_deb_enter(LBS_DEB_NET);
369
370 if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
371 priv->stats.tx_dropped++;
372 goto done;
373 }
374
375 netif_stop_queue(priv->wlan_dev.netdev);
376
377 if (libertas_process_tx(priv, skb) == 0)
378 dev->trans_start = jiffies;
379 done:
380 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
381 return ret;
382 }
383
384 /**
385 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
386 *
387 */
388 static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
389 {
390 wlan_private *priv = dev->priv;
391 int ret;
392
393 lbs_deb_enter(LBS_DEB_MESH);
394
395 SET_MESH_FRAME(skb);
396
397 ret = wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
398 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
399 return ret;
400 }
401
402 /**
403 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
404 *
405 */
406 static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
407 {
408 int ret;
409
410 lbs_deb_enter(LBS_DEB_NET);
411
412 UNSET_MESH_FRAME(skb);
413
414 ret = wlan_hard_start_xmit(skb, dev);
415 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
416 return ret;
417 }
418
419 static void wlan_tx_timeout(struct net_device *dev)
420 {
421 wlan_private *priv = (wlan_private *) dev->priv;
422
423 lbs_deb_enter(LBS_DEB_TX);
424
425 lbs_pr_err("tx watch dog timeout\n");
426
427 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
428 dev->trans_start = jiffies;
429
430 if (priv->adapter->currenttxskb) {
431 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
432 /* If we are here, we have not received feedback from
433 the previous packet. Assume TX_FAIL and move on. */
434 priv->adapter->eventcause = 0x01000000;
435 libertas_send_tx_feedback(priv);
436 } else
437 wake_up_interruptible(&priv->mainthread.waitq);
438 } else if (priv->adapter->connect_status == libertas_connected)
439 netif_wake_queue(priv->wlan_dev.netdev);
440
441 lbs_deb_leave(LBS_DEB_TX);
442 }
443
444 /**
445 * @brief This function returns the network statistics
446 *
447 * @param dev A pointer to wlan_private structure
448 * @return A pointer to net_device_stats structure
449 */
450 static struct net_device_stats *wlan_get_stats(struct net_device *dev)
451 {
452 wlan_private *priv = (wlan_private *) dev->priv;
453
454 return &priv->stats;
455 }
456
457 static int wlan_set_mac_address(struct net_device *dev, void *addr)
458 {
459 int ret = 0;
460 wlan_private *priv = (wlan_private *) dev->priv;
461 wlan_adapter *adapter = priv->adapter;
462 struct sockaddr *phwaddr = addr;
463
464 lbs_deb_enter(LBS_DEB_NET);
465
466 memset(adapter->current_addr, 0, ETH_ALEN);
467
468 /* dev->dev_addr is 8 bytes */
469 lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
470
471 lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
472 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
473
474 ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
475 cmd_act_set,
476 cmd_option_waitforrsp, 0, NULL);
477
478 if (ret) {
479 lbs_deb_net("set MAC address failed\n");
480 ret = -1;
481 goto done;
482 }
483
484 lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
485 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
486 if (priv->mesh_dev)
487 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
488
489 done:
490 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
491 return ret;
492 }
493
494 static int wlan_copy_multicast_address(wlan_adapter * adapter,
495 struct net_device *dev)
496 {
497 int i = 0;
498 struct dev_mc_list *mcptr = dev->mc_list;
499
500 for (i = 0; i < dev->mc_count; i++) {
501 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
502 mcptr = mcptr->next;
503 }
504
505 return i;
506
507 }
508
509 static void wlan_set_multicast_list(struct net_device *dev)
510 {
511 wlan_private *priv = dev->priv;
512 wlan_adapter *adapter = priv->adapter;
513 int oldpacketfilter;
514
515 lbs_deb_enter(LBS_DEB_NET);
516
517 oldpacketfilter = adapter->currentpacketfilter;
518
519 if (dev->flags & IFF_PROMISC) {
520 lbs_deb_net("enable promiscuous mode\n");
521 adapter->currentpacketfilter |=
522 cmd_act_mac_promiscuous_enable;
523 adapter->currentpacketfilter &=
524 ~(cmd_act_mac_all_multicast_enable |
525 cmd_act_mac_multicast_enable);
526 } else {
527 /* Multicast */
528 adapter->currentpacketfilter &=
529 ~cmd_act_mac_promiscuous_enable;
530
531 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
532 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
533 lbs_deb_net( "enabling all multicast\n");
534 adapter->currentpacketfilter |=
535 cmd_act_mac_all_multicast_enable;
536 adapter->currentpacketfilter &=
537 ~cmd_act_mac_multicast_enable;
538 } else {
539 adapter->currentpacketfilter &=
540 ~cmd_act_mac_all_multicast_enable;
541
542 if (!dev->mc_count) {
543 lbs_deb_net("no multicast addresses, "
544 "disabling multicast\n");
545 adapter->currentpacketfilter &=
546 ~cmd_act_mac_multicast_enable;
547 } else {
548 int i;
549
550 adapter->currentpacketfilter |=
551 cmd_act_mac_multicast_enable;
552
553 adapter->nr_of_multicastmacaddr =
554 wlan_copy_multicast_address(adapter, dev);
555
556 lbs_deb_net("multicast addresses: %d\n",
557 dev->mc_count);
558
559 for (i = 0; i < dev->mc_count; i++) {
560 lbs_deb_net("Multicast address %d:"
561 MAC_FMT "\n", i,
562 adapter->multicastlist[i][0],
563 adapter->multicastlist[i][1],
564 adapter->multicastlist[i][2],
565 adapter->multicastlist[i][3],
566 adapter->multicastlist[i][4],
567 adapter->multicastlist[i][5]);
568 }
569 /* send multicast addresses to firmware */
570 libertas_prepare_and_send_command(priv,
571 cmd_mac_multicast_adr,
572 cmd_act_set, 0, 0,
573 NULL);
574 }
575 }
576 }
577
578 if (adapter->currentpacketfilter != oldpacketfilter) {
579 libertas_set_mac_packet_filter(priv);
580 }
581
582 lbs_deb_leave(LBS_DEB_NET);
583 }
584
585 /**
586 * @brief This function handles the major jobs in the WLAN driver.
587 * It handles all events generated by firmware, RX data received
588 * from firmware and TX data sent from kernel.
589 *
590 * @param data A pointer to wlan_thread structure
591 * @return 0
592 */
593 static int wlan_service_main_thread(void *data)
594 {
595 struct wlan_thread *thread = data;
596 wlan_private *priv = thread->priv;
597 wlan_adapter *adapter = priv->adapter;
598 wait_queue_t wait;
599 u8 ireg = 0;
600
601 lbs_deb_enter(LBS_DEB_THREAD);
602
603 wlan_activate_thread(thread);
604
605 init_waitqueue_entry(&wait, current);
606
607 for (;;) {
608 lbs_deb_thread( "main-thread 111: intcounter=%d "
609 "currenttxskb=%p dnld_sent=%d\n",
610 adapter->intcounter,
611 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
612
613 add_wait_queue(&thread->waitq, &wait);
614 set_current_state(TASK_INTERRUPTIBLE);
615 spin_lock_irq(&adapter->driver_lock);
616 if ((adapter->psstate == PS_STATE_SLEEP) ||
617 (!adapter->intcounter
618 && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
619 list_empty(&adapter->cmdpendingq)))) {
620 lbs_deb_thread(
621 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
622 adapter->connect_status, adapter->intcounter,
623 adapter->psmode, adapter->psstate);
624 spin_unlock_irq(&adapter->driver_lock);
625 schedule();
626 } else
627 spin_unlock_irq(&adapter->driver_lock);
628
629
630 lbs_deb_thread(
631 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
632 "dnld_sent=%d\n", adapter->intcounter,
633 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
634
635 set_current_state(TASK_RUNNING);
636 remove_wait_queue(&thread->waitq, &wait);
637 try_to_freeze();
638
639 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
640 "dnld_sent=%d\n",
641 adapter->intcounter,
642 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
643
644 if (kthread_should_stop()
645 || adapter->surpriseremoved) {
646 lbs_deb_thread(
647 "main-thread: break from main thread: surpriseremoved=0x%x\n",
648 adapter->surpriseremoved);
649 break;
650 }
651
652
653 spin_lock_irq(&adapter->driver_lock);
654 if (adapter->intcounter) {
655 u8 int_status;
656 adapter->intcounter = 0;
657 int_status = libertas_sbi_get_int_status(priv, &ireg);
658
659 if (int_status) {
660 lbs_deb_thread(
661 "main-thread: reading HOST_INT_STATUS_REG failed\n");
662 spin_unlock_irq(&adapter->driver_lock);
663 continue;
664 }
665 adapter->hisregcpy |= ireg;
666 }
667
668 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
669 "dnld_sent=%d\n",
670 adapter->intcounter,
671 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
672
673 /* command response? */
674 if (adapter->hisregcpy & his_cmdupldrdy) {
675 lbs_deb_thread("main-thread: cmd response ready\n");
676
677 adapter->hisregcpy &= ~his_cmdupldrdy;
678 spin_unlock_irq(&adapter->driver_lock);
679 libertas_process_rx_command(priv);
680 spin_lock_irq(&adapter->driver_lock);
681 }
682
683 /* Any Card Event */
684 if (adapter->hisregcpy & his_cardevent) {
685 lbs_deb_thread("main-thread: Card Event Activity\n");
686
687 adapter->hisregcpy &= ~his_cardevent;
688
689 if (libertas_sbi_read_event_cause(priv)) {
690 lbs_pr_alert(
691 "main-thread: libertas_sbi_read_event_cause failed\n");
692 spin_unlock_irq(&adapter->driver_lock);
693 continue;
694 }
695 spin_unlock_irq(&adapter->driver_lock);
696 libertas_process_event(priv);
697 } else
698 spin_unlock_irq(&adapter->driver_lock);
699
700 /* Check if we need to confirm Sleep Request received previously */
701 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
702 if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
703 if (adapter->connect_status ==
704 libertas_connected) {
705 lbs_deb_thread(
706 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
707 "dnld_sent=%d cur_cmd=%p, confirm now\n",
708 adapter->intcounter,
709 adapter->currenttxskb,
710 priv->wlan_dev.dnld_sent,
711 adapter->cur_cmd);
712
713 libertas_ps_confirm_sleep(priv,
714 (u16) adapter->psmode);
715 } else {
716 /* workaround for firmware sending
717 * deauth/linkloss event immediately
718 * after sleep request, remove this
719 * after firmware fixes it
720 */
721 adapter->psstate = PS_STATE_AWAKE;
722 lbs_pr_alert(
723 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
724 }
725 }
726 }
727
728 /* The PS state is changed during processing of Sleep Request
729 * event above
730 */
731 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
732 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
733 continue;
734
735 /* Execute the next command */
736 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
737 libertas_execute_next_command(priv);
738
739 /* Wake-up command waiters which can't sleep in
740 * libertas_prepare_and_send_command
741 */
742 if (!adapter->nr_cmd_pending)
743 wake_up_all(&adapter->cmd_pending);
744
745 libertas_tx_runqueue(priv);
746 }
747
748 del_timer(&adapter->command_timer);
749 adapter->nr_cmd_pending = 0;
750 wake_up_all(&adapter->cmd_pending);
751 wlan_deactivate_thread(thread);
752
753 lbs_deb_leave(LBS_DEB_THREAD);
754 return 0;
755 }
756
757 /**
758 * @brief This function adds the card. it will probe the
759 * card, allocate the wlan_priv and initialize the device.
760 *
761 * @param card A pointer to card
762 * @return A pointer to wlan_private structure
763 */
764 wlan_private *wlan_add_card(void *card)
765 {
766 struct net_device *dev = NULL;
767 wlan_private *priv = NULL;
768
769 lbs_deb_enter(LBS_DEB_NET);
770
771 /* Allocate an Ethernet device and register it */
772 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
773 lbs_pr_err("init ethX device failed\n");
774 return NULL;
775 }
776 priv = dev->priv;
777
778 /* allocate buffer for wlan_adapter */
779 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
780 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
781 goto err_kzalloc;
782 }
783
784 priv->wlan_dev.netdev = dev;
785 priv->wlan_dev.card = card;
786 priv->mesh_open = 0;
787 priv->infra_open = 0;
788
789 SET_MODULE_OWNER(dev);
790
791 /* Setup the OS Interface to our functions */
792 dev->open = wlan_open;
793 dev->hard_start_xmit = wlan_pre_start_xmit;
794 dev->stop = wlan_close;
795 dev->do_ioctl = libertas_do_ioctl;
796 dev->set_mac_address = wlan_set_mac_address;
797 dev->tx_timeout = wlan_tx_timeout;
798 dev->get_stats = wlan_get_stats;
799 dev->watchdog_timeo = 5 * HZ;
800 dev->ethtool_ops = &libertas_ethtool_ops;
801 #ifdef WIRELESS_EXT
802 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
803 #endif
804 #define NETIF_F_DYNALLOC 16
805 dev->features |= NETIF_F_DYNALLOC;
806 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
807 dev->set_multicast_list = wlan_set_multicast_list;
808
809 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
810 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
811
812 spin_lock_init(&priv->adapter->driver_lock);
813 init_waitqueue_head(&priv->adapter->cmd_pending);
814 priv->adapter->nr_cmd_pending = 0;
815 goto done;
816
817 err_kzalloc:
818 free_netdev(dev);
819 done:
820 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
821 return priv;
822 }
823
824 int libertas_activate_card(wlan_private *priv)
825 {
826 struct net_device *dev = priv->wlan_dev.netdev;
827 int ret = -1;
828
829 lbs_deb_enter(LBS_DEB_MAIN);
830
831 lbs_deb_thread("Starting kthread...\n");
832 priv->mainthread.priv = priv;
833 wlan_create_thread(wlan_service_main_thread,
834 &priv->mainthread, "wlan_main_service");
835
836 priv->assoc_thread =
837 create_singlethread_workqueue("libertas_assoc");
838 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
839
840 /*
841 * Register the device. Fillup the private data structure with
842 * relevant information from the card and request for the required
843 * IRQ.
844 */
845 if (libertas_sbi_register_dev(priv) < 0) {
846 lbs_pr_err("failed to register WLAN device\n");
847 goto err_registerdev;
848 }
849
850 /* init FW and HW */
851 if (libertas_init_fw(priv)) {
852 lbs_pr_err("firmware init failed\n");
853 goto err_registerdev;
854 }
855
856 if (register_netdev(dev)) {
857 lbs_pr_err("cannot register ethX device\n");
858 goto err_init_fw;
859 }
860
861 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
862
863 libertas_debugfs_init_one(priv, dev);
864
865 ret = 0;
866 goto done;
867
868 err_init_fw:
869 libertas_sbi_unregister_dev(priv);
870 err_registerdev:
871 destroy_workqueue(priv->assoc_thread);
872 /* Stop the thread servicing the interrupts */
873 wake_up_interruptible(&priv->mainthread.waitq);
874 wlan_terminate_thread(&priv->mainthread);
875 kfree(priv->adapter);
876 free_netdev(dev);
877 done:
878 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
879 return ret;
880 }
881
882 /**
883 * @brief This function adds mshX interface
884 *
885 * @param priv A pointer to the wlan_private structure
886 * @return 0 if successful, -X otherwise
887 */
888 int wlan_add_mesh(wlan_private *priv)
889 {
890 struct net_device *mesh_dev = NULL;
891 int ret = 0;
892
893 lbs_deb_enter(LBS_DEB_MESH);
894
895 /* Allocate a virtual mesh device */
896 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
897 lbs_deb_mesh("init mshX device failed\n");
898 ret = -ENOMEM;
899 goto done;
900 }
901 mesh_dev->priv = priv;
902 priv->mesh_dev = mesh_dev;
903
904 SET_MODULE_OWNER(mesh_dev);
905
906 mesh_dev->open = mesh_open;
907 mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
908 mesh_dev->stop = mesh_close;
909 mesh_dev->do_ioctl = libertas_do_ioctl;
910 mesh_dev->get_stats = wlan_get_stats;
911 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
912 memcpy(mesh_dev->dev_addr, priv->wlan_dev.netdev->dev_addr,
913 sizeof(priv->wlan_dev.netdev->dev_addr));
914
915 #ifdef WIRELESS_EXT
916 mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
917 #endif
918 #define NETIF_F_DYNALLOC 16
919
920 /* Register virtual mesh interface */
921 ret = register_netdev(mesh_dev);
922 if (ret) {
923 lbs_pr_err("cannot register mshX virtual interface\n");
924 goto err_free;
925 }
926
927 ret = device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
928 if (ret)
929 goto err_unregister;
930
931 /* Everything successful */
932 ret = 0;
933 goto done;
934
935
936 err_unregister:
937 unregister_netdev(mesh_dev);
938
939 err_free:
940 free_netdev(mesh_dev);
941
942 done:
943 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
944 return ret;
945 }
946
947 static void wake_pending_cmdnodes(wlan_private *priv)
948 {
949 struct cmd_ctrl_node *cmdnode;
950 unsigned long flags;
951
952 lbs_deb_enter(LBS_DEB_CMD);
953
954 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
955 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
956 cmdnode->cmdwaitqwoken = 1;
957 wake_up_interruptible(&cmdnode->cmdwait_q);
958 }
959 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
960 }
961
962
963 int wlan_remove_card(wlan_private *priv)
964 {
965 wlan_adapter *adapter;
966 struct net_device *dev;
967 union iwreq_data wrqu;
968
969 lbs_deb_enter(LBS_DEB_NET);
970
971 if (!priv)
972 goto out;
973
974 adapter = priv->adapter;
975
976 if (!adapter)
977 goto out;
978
979 dev = priv->wlan_dev.netdev;
980
981 netif_stop_queue(priv->wlan_dev.netdev);
982 netif_carrier_off(priv->wlan_dev.netdev);
983
984 wake_pending_cmdnodes(priv);
985
986 unregister_netdev(dev);
987
988 cancel_delayed_work(&priv->assoc_work);
989 destroy_workqueue(priv->assoc_thread);
990
991 if (adapter->psmode == wlan802_11powermodemax_psp) {
992 adapter->psmode = wlan802_11powermodecam;
993 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
994 }
995
996 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
997 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
998 wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
999
1000 adapter->surpriseremoved = 1;
1001
1002 /* Stop the thread servicing the interrupts */
1003 wlan_terminate_thread(&priv->mainthread);
1004
1005 libertas_debugfs_remove_one(priv);
1006
1007 lbs_deb_net("free adapter\n");
1008 libertas_free_adapter(priv);
1009
1010 lbs_deb_net("unregister finish\n");
1011
1012 priv->wlan_dev.netdev = NULL;
1013 free_netdev(dev);
1014
1015 out:
1016 lbs_deb_leave(LBS_DEB_NET);
1017 return 0;
1018 }
1019
1020 void wlan_remove_mesh(wlan_private *priv)
1021 {
1022 struct net_device *mesh_dev;
1023
1024 lbs_deb_enter(LBS_DEB_NET);
1025
1026 if (!priv)
1027 goto out;
1028
1029 mesh_dev = priv->mesh_dev;
1030
1031 netif_stop_queue(mesh_dev);
1032
1033 device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1034 unregister_netdev(mesh_dev);
1035
1036 priv->mesh_dev = NULL ;
1037 free_netdev(mesh_dev);
1038
1039 out:
1040 lbs_deb_leave(LBS_DEB_NET);
1041 }
1042
1043 /**
1044 * @brief This function finds the CFP in
1045 * region_cfp_table based on region and band parameter.
1046 *
1047 * @param region The region code
1048 * @param band The band
1049 * @param cfp_no A pointer to CFP number
1050 * @return A pointer to CFP
1051 */
1052 struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1053 {
1054 int i, end;
1055
1056 lbs_deb_enter(LBS_DEB_MAIN);
1057
1058 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1059
1060 for (i = 0; i < end ; i++) {
1061 lbs_deb_main("region_cfp_table[i].region=%d\n",
1062 region_cfp_table[i].region);
1063 if (region_cfp_table[i].region == region) {
1064 *cfp_no = region_cfp_table[i].cfp_no_BG;
1065 lbs_deb_leave(LBS_DEB_MAIN);
1066 return region_cfp_table[i].cfp_BG;
1067 }
1068 }
1069
1070 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1071 return NULL;
1072 }
1073
1074 int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1075 {
1076 wlan_adapter *adapter = priv->adapter;
1077 int ret = 0;
1078 int i = 0;
1079
1080 struct chan_freq_power *cfp;
1081 int cfp_no;
1082
1083 lbs_deb_enter(LBS_DEB_MAIN);
1084
1085 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1086
1087 {
1088 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1089 if (cfp != NULL) {
1090 adapter->region_channel[i].nrcfp = cfp_no;
1091 adapter->region_channel[i].CFP = cfp;
1092 } else {
1093 lbs_deb_main("wrong region code %#x in band B/G\n",
1094 region);
1095 ret = -1;
1096 goto out;
1097 }
1098 adapter->region_channel[i].valid = 1;
1099 adapter->region_channel[i].region = region;
1100 adapter->region_channel[i].band = band;
1101 i++;
1102 }
1103 out:
1104 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1105 return ret;
1106 }
1107
1108 /**
1109 * @brief This function handles the interrupt. it will change PS
1110 * state if applicable. it will wake up main_thread to handle
1111 * the interrupt event as well.
1112 *
1113 * @param dev A pointer to net_device structure
1114 * @return n/a
1115 */
1116 void libertas_interrupt(struct net_device *dev)
1117 {
1118 wlan_private *priv = dev->priv;
1119
1120 lbs_deb_enter(LBS_DEB_THREAD);
1121
1122 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
1123 priv->adapter->intcounter);
1124
1125 priv->adapter->intcounter++;
1126
1127 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1128 priv->adapter->psstate = PS_STATE_AWAKE;
1129 netif_wake_queue(dev);
1130 }
1131
1132 wake_up_interruptible(&priv->mainthread.waitq);
1133
1134 lbs_deb_leave(LBS_DEB_THREAD);
1135 }
1136
1137 static int wlan_init_module(void)
1138 {
1139 int ret = 0;
1140
1141 lbs_deb_enter(LBS_DEB_MAIN);
1142
1143 if (libertas_fw_name == NULL) {
1144 libertas_fw_name = default_fw_name;
1145 }
1146
1147 libertas_debugfs_init();
1148
1149 if (libertas_sbi_register()) {
1150 ret = -1;
1151 libertas_debugfs_remove();
1152 }
1153
1154 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1155 return ret;
1156 }
1157
1158 static void wlan_cleanup_module(void)
1159 {
1160 lbs_deb_enter(LBS_DEB_MAIN);
1161
1162 libertas_sbi_unregister();
1163 libertas_debugfs_remove();
1164
1165 lbs_deb_leave(LBS_DEB_MAIN);
1166 }
1167
1168 module_init(wlan_init_module);
1169 module_exit(wlan_cleanup_module);
1170
1171 MODULE_DESCRIPTION("M-WLAN Driver");
1172 MODULE_AUTHOR("Marvell International Ltd.");
1173 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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