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[PATCH] libertas: move reset_device() code main.c to if_usb.c
[deliverable/linux.git] / drivers / net / wireless / libertas / main.c
CommitLineData
876c9d3a
MT		 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
a46c6410 7#include <linux/moduleparam.h>
876c9d3a
MT		 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>
9012b28a 15#include <net/ieee80211.h>
876c9d3a
MT		 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
3ce40232
DW		 26#define DRIVER_RELEASE_VERSION "320.p0"
27const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
28#ifdef DEBUG
29 "-dbg"
30#endif
31 "";
32
a46c6410
HS		 33
34/* Module parameters */
35unsigned int libertas_debug = 0;
36module_param(libertas_debug, int, 0644);
37
38
39
876c9d3a
MT		 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 */
48static 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 */
63static 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 */
80static 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 */
86static 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 */
94static 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 */
114struct 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 */
123static 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
876c9d3a
MT		 153/**
154 * the rates supported
155 */
156u8 libertas_supported_rates[G_SUPPORTED_RATES] =
157 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1580 };
159
160/**
161 * the rates supported for ad-hoc G mode
162 */
163u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
164 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1650 };
166
167/**
168 * the rates supported for ad-hoc B mode
169 */
170u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
171
876c9d3a
MT		 172/**
173 * the table to keep region code
174 */
175u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
176 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
177
178static u8 *default_fw_name = "usb8388.bin";
179
180/**
181 * Attributes exported through sysfs
182 */
876c9d3a
MT		 183
184/**
185 * @brief Get function for sysfs attribute libertas_mpp
186 */
b3f1b8cf
JL		 187static ssize_t libertas_mpp_get(struct device * dev,
188 struct device_attribute *attr, char * buf) {
876c9d3a
MT		 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 */
b3f1b8cf
JL		 203static ssize_t libertas_mpp_set(struct device * dev,
204 struct device_attribute *attr, const char * buf, size_t count) {
876c9d3a
MT		 205 struct cmd_ds_mesh_access mesh_access;
206
876c9d3a
MT		 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 */
b3f1b8cf 220static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
876c9d3a
MT		 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 */
9012b28a
HS		 234static int pre_open_check(struct net_device *dev)
235{
876c9d3a
MT		 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) {
9012b28a 245 lbs_pr_err("firmware not ready\n");
876c9d3a
MT		 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 */
258static int wlan_dev_open(struct net_device *dev)
259{
260 wlan_private *priv = (wlan_private *) dev->priv;
261 wlan_adapter *adapter = priv->adapter;
262
9012b28a 263 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 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
9012b28a 272 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 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 */
281static int mesh_open(struct net_device *dev)
282{
283 wlan_private *priv = (wlan_private *) dev->priv ;
284
78523daa 285 if (pre_open_check(dev) == -1)
876c9d3a
MT		 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 */
300static 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
313static int wlan_dev_close(struct net_device *dev)
314{
315 wlan_private *priv = dev->priv;
316
9012b28a 317 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 318
319 netif_carrier_off(priv->wlan_dev.netdev);
320 priv->open = 0;
321
9012b28a 322 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 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 */
332static 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 */
78523daa
HS		 350static int wlan_close(struct net_device *dev)
351{
876c9d3a
MT		 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
876c9d3a
MT		 363static 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
9012b28a 368 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 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;
379done:
9012b28a 380 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 381 return ret;
382}
383
384/**
385 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
386 *
387 */
388static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
389{
390 wlan_private *priv = dev->priv;
9012b28a
HS		 391 int ret;
392
393 lbs_deb_enter(LBS_DEB_MESH);
394
876c9d3a 395 SET_MESH_FRAME(skb);
876c9d3a 396
9012b28a
HS		 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;
876c9d3a
MT		 400}
401
402/**
403 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
404 *
405 */
9012b28a
HS		 406static 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
876c9d3a 412 UNSET_MESH_FRAME(skb);
9012b28a
HS		 413
414 ret = wlan_hard_start_xmit(skb, dev);
415 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
416 return ret;
876c9d3a
MT		 417}
418
419static void wlan_tx_timeout(struct net_device *dev)
420{
421 wlan_private *priv = (wlan_private *) dev->priv;
422
9012b28a 423 lbs_deb_enter(LBS_DEB_TX);
876c9d3a 424
9012b28a 425 lbs_pr_err("tx watch dog timeout\n");
876c9d3a
MT		 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
9012b28a 441 lbs_deb_leave(LBS_DEB_TX);
876c9d3a
MT		 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 */
450static 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
457static 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
9012b28a 464 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 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) {
9012b28a 479 lbs_deb_net("set MAC address failed\n");
876c9d3a
MT		 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);
78523daa
HS		 486 if (priv->mesh_dev)
487 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
876c9d3a
MT		 488
489done:
9012b28a 490 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 491 return ret;
492}
493
494static 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
509static 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
9012b28a 515 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 516
517 oldpacketfilter = adapter->currentpacketfilter;
518
519 if (dev->flags & IFF_PROMISC) {
9012b28a 520 lbs_deb_net("enable promiscuous mode\n");
876c9d3a
MT		 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) {
9012b28a 533 lbs_deb_net( "enabling all multicast\n");
876c9d3a
MT		 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) {
9012b28a
HS		 543 lbs_deb_net("no multicast addresses, "
544 "disabling multicast\n");
876c9d3a
MT		 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
9012b28a 556 lbs_deb_net("multicast addresses: %d\n",
876c9d3a
MT		 557 dev->mc_count);
558
559 for (i = 0; i < dev->mc_count; i++) {
9012b28a
HS		 560 lbs_deb_net("Multicast address %d:"
561 MAC_FMT "\n", i,
876c9d3a
MT		 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 }
9012b28a 569 /* send multicast addresses to firmware */
876c9d3a
MT		 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
9012b28a 582 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 583}
584
585/**
9012b28a
HS		 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.
876c9d3a
MT		 589 *
590 * @param data A pointer to wlan_thread structure
591 * @return 0
592 */
593static 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
9012b28a 601 lbs_deb_enter(LBS_DEB_THREAD);
876c9d3a
MT		 602
603 wlan_activate_thread(thread);
604
605 init_waitqueue_entry(&wait, current);
606
607 for (;;) {
9012b28a 608 lbs_deb_thread( "main-thread 111: intcounter=%d "
876c9d3a
MT		 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)))) {
9012b28a 620 lbs_deb_thread(
876c9d3a
MT		 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
9012b28a 630 lbs_deb_thread(
876c9d3a
MT		 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
9012b28a 639 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 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) {
9012b28a 646 lbs_deb_thread(
876c9d3a
MT		 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) {
9012b28a 660 lbs_deb_thread(
876c9d3a
MT		 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
9012b28a 668 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 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) {
9012b28a 675 lbs_deb_thread("main-thread: cmd response ready\n");
876c9d3a
MT		 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) {
9012b28a 685 lbs_deb_thread("main-thread: Card Event Activity\n");
876c9d3a
MT		 686
687 adapter->hisregcpy &= ~his_cardevent;
688
689 if (libertas_sbi_read_event_cause(priv)) {
690 lbs_pr_alert(
9012b28a 691 "main-thread: libertas_sbi_read_event_cause failed\n");
876c9d3a
MT		 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) {
9012b28a 705 lbs_deb_thread(
876c9d3a
MT		 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
9012b28a 753 lbs_deb_leave(LBS_DEB_THREAD);
876c9d3a
MT		 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 */
764wlan_private *wlan_add_card(void *card)
765{
766 struct net_device *dev = NULL;
876c9d3a
MT		 767 wlan_private *priv = NULL;
768
9012b28a 769 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 770
771 /* Allocate an Ethernet device and register it */
772 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
9012b28a 773 lbs_pr_err("init ethX device failed\n");
876c9d3a
MT		 774 return NULL;
775 }
876c9d3a
MT		 776 priv = dev->priv;
777
778 /* allocate buffer for wlan_adapter */
fb3dddf2 779 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
9012b28a 780 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
fb3dddf2 781 goto err_kzalloc;
876c9d3a
MT		 782 }
783
876c9d3a
MT		 784 priv->wlan_dev.netdev = dev;
785 priv->wlan_dev.card = card;
786 priv->mesh_open = 0;
787 priv->infra_open = 0;
876c9d3a
MT		 788
789 SET_MODULE_OWNER(dev);
876c9d3a
MT		 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;
876c9d3a
MT		 797 dev->tx_timeout = wlan_tx_timeout;
798 dev->get_stats = wlan_get_stats;
fb3dddf2 799 dev->watchdog_timeo = 5 * HZ;
876c9d3a 800 dev->ethtool_ops = &libertas_ethtool_ops;
876c9d3a
MT		 801#ifdef WIRELESS_EXT
802 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
876c9d3a
MT		 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
9012b28a 816 lbs_deb_thread("Starting kthread...\n");
876c9d3a
MT		 817 priv->mainthread.priv = priv;
818 wlan_create_thread(wlan_service_main_thread,
819 &priv->mainthread, "wlan_main_service");
820
821 priv->assoc_thread =
822 create_singlethread_workqueue("libertas_assoc");
eb3ce631 823 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
876c9d3a
MT		 824
825 /*
826 * Register the device. Fillup the private data structure with
827 * relevant information from the card and request for the required
828 * IRQ.
829 */
830 if (libertas_sbi_register_dev(priv) < 0) {
9012b28a 831 lbs_pr_err("failed to register WLAN device\n");
876c9d3a
MT		 832 goto err_registerdev;
833 }
834
835 /* init FW and HW */
836 if (libertas_init_fw(priv)) {
9012b28a 837 lbs_pr_err("firmware init failed\n");
876c9d3a
MT		 838 goto err_registerdev;
839 }
840
841 if (register_netdev(dev)) {
9012b28a 842 lbs_pr_err("cannot register ethX device\n");
876c9d3a
MT		 843 goto err_init_fw;
844 }
845
9012b28a 846 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
876c9d3a
MT		 847
848 libertas_debugfs_init_one(priv, dev);
849
9012b28a 850 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
876c9d3a
MT		 851 return priv;
852
876c9d3a
MT		 853err_init_fw:
854 libertas_sbi_unregister_dev(priv);
855err_registerdev:
856 destroy_workqueue(priv->assoc_thread);
857 /* Stop the thread servicing the interrupts */
858 wake_up_interruptible(&priv->mainthread.waitq);
859 wlan_terminate_thread(&priv->mainthread);
860 kfree(priv->adapter);
fb3dddf2 861err_kzalloc:
876c9d3a 862 free_netdev(dev);
876c9d3a 863
9012b28a 864 lbs_deb_leave_args(LBS_DEB_NET, "priv NULL");
876c9d3a
MT		 865 return NULL;
866}
867
78523daa
HS		 868/**
869 * @brief This function adds mshX interface
870 *
871 * @param priv A pointer to the wlan_private structure
872 * @return 0 if successful, -X otherwise
873 */
874int wlan_add_mesh(wlan_private *priv)
875{
876 struct net_device *mesh_dev = NULL;
877 int ret = 0;
878
879 lbs_deb_enter(LBS_DEB_MESH);
880
881 /* Allocate a virtual mesh device */
882 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
883 lbs_deb_mesh("init mshX device failed\n");
884 ret = -ENOMEM;
885 goto done;
886 }
887 mesh_dev->priv = priv;
888 priv->mesh_dev = mesh_dev;
889
890 SET_MODULE_OWNER(mesh_dev);
891
892 mesh_dev->open = mesh_open;
893 mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
894 mesh_dev->stop = mesh_close;
895 mesh_dev->do_ioctl = libertas_do_ioctl;
896 mesh_dev->get_stats = wlan_get_stats;
897 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
898 memcpy(mesh_dev->dev_addr, priv->wlan_dev.netdev->dev_addr,
899 sizeof(priv->wlan_dev.netdev->dev_addr));
900
901#ifdef WIRELESS_EXT
902 mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
903#endif
904#define NETIF_F_DYNALLOC 16
905
906 /* Register virtual mesh interface */
907 ret = register_netdev(mesh_dev);
908 if (ret) {
909 lbs_pr_err("cannot register mshX virtual interface\n");
910 goto err_free;
911 }
912
913 ret = device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
914 if (ret)
915 goto err_unregister;
916
917 /* Everything successful */
918 ret = 0;
919 goto done;
920
921
922err_unregister:
923 unregister_netdev(mesh_dev);
924
925err_free:
926 free_netdev(mesh_dev);
927
928done:
929 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
930 return ret;
931}
932
876c9d3a
MT		 933static void wake_pending_cmdnodes(wlan_private *priv)
934{
935 struct cmd_ctrl_node *cmdnode;
936 unsigned long flags;
937
9012b28a
HS		 938 lbs_deb_enter(LBS_DEB_CMD);
939
876c9d3a
MT		 940 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
941 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
942 cmdnode->cmdwaitqwoken = 1;
943 wake_up_interruptible(&cmdnode->cmdwait_q);
944 }
945 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
946}
947
948
1ac812f1 949int wlan_remove_card(wlan_private *priv)
876c9d3a 950{
876c9d3a
MT		 951 wlan_adapter *adapter;
952 struct net_device *dev;
876c9d3a 953 union iwreq_data wrqu;
876c9d3a 954
9012b28a 955 lbs_deb_enter(LBS_DEB_NET);
876c9d3a 956
9012b28a
HS		 957 if (!priv)
958 goto out;
876c9d3a
MT		 959
960 adapter = priv->adapter;
961
9012b28a
HS		 962 if (!adapter)
963 goto out;
876c9d3a
MT		 964
965 dev = priv->wlan_dev.netdev;
876c9d3a 966
876c9d3a
MT		 967 netif_stop_queue(priv->wlan_dev.netdev);
968 netif_carrier_off(priv->wlan_dev.netdev);
969
970 wake_pending_cmdnodes(priv);
971
876c9d3a
MT		 972 unregister_netdev(dev);
973
974 cancel_delayed_work(&priv->assoc_work);
975 destroy_workqueue(priv->assoc_thread);
976
977 if (adapter->psmode == wlan802_11powermodemax_psp) {
978 adapter->psmode = wlan802_11powermodecam;
979 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
980 }
981
982 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
983 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
984 wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
985
876c9d3a
MT		 986 adapter->surpriseremoved = 1;
987
988 /* Stop the thread servicing the interrupts */
989 wlan_terminate_thread(&priv->mainthread);
990
991 libertas_debugfs_remove_one(priv);
992
9012b28a 993 lbs_deb_net("free adapter\n");
876c9d3a
MT		 994 libertas_free_adapter(priv);
995
9012b28a 996 lbs_deb_net("unregister finish\n");
876c9d3a
MT		 997
998 priv->wlan_dev.netdev = NULL;
876c9d3a 999 free_netdev(dev);
876c9d3a 1000
9012b28a
HS		 1001out:
1002 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 1003 return 0;
1004}
1005
78523daa
HS		 1006void wlan_remove_mesh(wlan_private *priv)
1007{
1008 struct net_device *mesh_dev;
1009
1010 lbs_deb_enter(LBS_DEB_NET);
1011
1012 if (!priv)
1013 goto out;
1014
1015 mesh_dev = priv->mesh_dev;
1016
1017 netif_stop_queue(mesh_dev);
1018
1019 device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1020 unregister_netdev(mesh_dev);
1021
1022 priv->mesh_dev = NULL ;
1023 free_netdev(mesh_dev);
1024
1025out:
1026 lbs_deb_leave(LBS_DEB_NET);
1027}
1028
876c9d3a
MT		 1029/**
1030 * @brief This function finds the CFP in
1031 * region_cfp_table based on region and band parameter.
1032 *
1033 * @param region The region code
1034 * @param band The band
1035 * @param cfp_no A pointer to CFP number
1036 * @return A pointer to CFP
1037 */
1038struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1039{
1040 int i, end;
1041
9012b28a 1042 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1043
1044 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1045
1046 for (i = 0; i < end ; i++) {
9012b28a 1047 lbs_deb_main("region_cfp_table[i].region=%d\n",
876c9d3a
MT		 1048 region_cfp_table[i].region);
1049 if (region_cfp_table[i].region == region) {
1050 *cfp_no = region_cfp_table[i].cfp_no_BG;
9012b28a 1051 lbs_deb_leave(LBS_DEB_MAIN);
876c9d3a
MT		 1052 return region_cfp_table[i].cfp_BG;
1053 }
1054 }
1055
9012b28a 1056 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
876c9d3a
MT		 1057 return NULL;
1058}
1059
1060int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1061{
1062 wlan_adapter *adapter = priv->adapter;
9012b28a 1063 int ret = 0;
876c9d3a
MT		 1064 int i = 0;
1065
1066 struct chan_freq_power *cfp;
1067 int cfp_no;
1068
9012b28a 1069 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1070
1071 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1072
1073 {
1074 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1075 if (cfp != NULL) {
1076 adapter->region_channel[i].nrcfp = cfp_no;
1077 adapter->region_channel[i].CFP = cfp;
1078 } else {
9012b28a 1079 lbs_deb_main("wrong region code %#x in band B/G\n",
876c9d3a 1080 region);
9012b28a
HS		 1081 ret = -1;
1082 goto out;
876c9d3a
MT		 1083 }
1084 adapter->region_channel[i].valid = 1;
1085 adapter->region_channel[i].region = region;
1086 adapter->region_channel[i].band = band;
1087 i++;
1088 }
9012b28a
HS		 1089out:
1090 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1091 return ret;
876c9d3a
MT		 1092}
1093
1094/**
1095 * @brief This function handles the interrupt. it will change PS
1096 * state if applicable. it will wake up main_thread to handle
1097 * the interrupt event as well.
1098 *
1099 * @param dev A pointer to net_device structure
1100 * @return n/a
1101 */
1102void libertas_interrupt(struct net_device *dev)
1103{
1104 wlan_private *priv = dev->priv;
1105
ed37b516 1106 lbs_deb_enter(LBS_DEB_THREAD);
876c9d3a 1107
ed37b516 1108 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
876c9d3a
MT		 1109 priv->adapter->intcounter);
1110
1111 priv->adapter->intcounter++;
1112
1113 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1114 priv->adapter->psstate = PS_STATE_AWAKE;
1115 netif_wake_queue(dev);
1116 }
1117
1118 wake_up_interruptible(&priv->mainthread.waitq);
1119
ed37b516 1120 lbs_deb_leave(LBS_DEB_THREAD);
876c9d3a
MT		 1121}
1122
1123static int wlan_init_module(void)
1124{
1125 int ret = 0;
1126
9012b28a 1127 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1128
1129 if (libertas_fw_name == NULL) {
1130 libertas_fw_name = default_fw_name;
1131 }
1132
1133 libertas_debugfs_init();
1134
1135 if (libertas_sbi_register()) {
1136 ret = -1;
1137 libertas_debugfs_remove();
876c9d3a
MT		 1138 }
1139
9012b28a 1140 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
876c9d3a
MT		 1141 return ret;
1142}
1143
1144static void wlan_cleanup_module(void)
1145{
9012b28a 1146 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a 1147
876c9d3a
MT		 1148 libertas_sbi_unregister();
1149 libertas_debugfs_remove();
1150
9012b28a 1151 lbs_deb_leave(LBS_DEB_MAIN);
876c9d3a
MT		 1152}
1153
1154module_init(wlan_init_module);
1155module_exit(wlan_cleanup_module);
1156
1157MODULE_DESCRIPTION("M-WLAN Driver");
1158MODULE_AUTHOR("Marvell International Ltd.");
1159MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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