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[PATCH] libertas: fixed transmission flow control on the mesh interface
[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);
51d84f50
JC		 269 netif_carrier_on(priv->mesh_dev);
270 } else {
876c9d3a 271 netif_carrier_off(priv->wlan_dev.netdev);
51d84f50
JC		 272 netif_carrier_off(priv->mesh_dev);
273 }
876c9d3a 274
9012b28a 275 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 276 return 0;
277}
278/**
279 * @brief This function opens the mshX interface
280 *
281 * @param dev A pointer to net_device structure
282 * @return 0
283 */
284static int mesh_open(struct net_device *dev)
285{
286 wlan_private *priv = (wlan_private *) dev->priv ;
287
78523daa 288 if (pre_open_check(dev) == -1)
876c9d3a
MT		 289 return -1;
290 priv->mesh_open = 1 ;
51d84f50 291 netif_wake_queue(priv->mesh_dev);
876c9d3a
MT		 292 if (priv->infra_open == 0)
293 return wlan_dev_open(priv->wlan_dev.netdev) ;
294 return 0;
295}
296
297/**
298 * @brief This function opens the ethX interface
299 *
300 * @param dev A pointer to net_device structure
301 * @return 0
302 */
303static int wlan_open(struct net_device *dev)
304{
305 wlan_private *priv = (wlan_private *) dev->priv ;
306
307 if(pre_open_check(dev) == -1)
308 return -1;
309 priv->infra_open = 1 ;
310 netif_wake_queue(priv->wlan_dev.netdev);
311 if (priv->open == 0)
312 return wlan_dev_open(priv->wlan_dev.netdev) ;
313 return 0;
314}
315
316static int wlan_dev_close(struct net_device *dev)
317{
318 wlan_private *priv = dev->priv;
319
9012b28a 320 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 321
322 netif_carrier_off(priv->wlan_dev.netdev);
51d84f50 323 netif_carrier_off(priv->mesh_dev);
876c9d3a
MT		 324 priv->open = 0;
325
9012b28a 326 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 327 return 0;
328}
329
330/**
331 * @brief This function closes the mshX interface
332 *
333 * @param dev A pointer to net_device structure
334 * @return 0
335 */
336static int mesh_close(struct net_device *dev)
337{
338 wlan_private *priv = (wlan_private *) (dev->priv);
339
340 priv->mesh_open = 0;
341 netif_stop_queue(priv->mesh_dev);
342 if (priv->infra_open == 0)
343 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
344 else
345 return 0;
346}
347
348/**
349 * @brief This function closes the ethX interface
350 *
351 * @param dev A pointer to net_device structure
352 * @return 0
353 */
78523daa
HS		 354static int wlan_close(struct net_device *dev)
355{
876c9d3a
MT		 356 wlan_private *priv = (wlan_private *) dev->priv;
357
358 netif_stop_queue(priv->wlan_dev.netdev);
359 priv->infra_open = 0;
360 if (priv->mesh_open == 0)
361 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
362 else
363 return 0;
364}
365
366
876c9d3a
MT		 367static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
368{
369 int ret = 0;
370 wlan_private *priv = dev->priv;
371
9012b28a 372 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 373
374 if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
375 priv->stats.tx_dropped++;
376 goto done;
377 }
378
379 netif_stop_queue(priv->wlan_dev.netdev);
51d84f50 380 netif_stop_queue(priv->mesh_dev);
876c9d3a
MT		 381
382 if (libertas_process_tx(priv, skb) == 0)
383 dev->trans_start = jiffies;
384done:
9012b28a 385 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 386 return ret;
387}
388
389/**
390 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
391 *
392 */
393static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
394{
395 wlan_private *priv = dev->priv;
9012b28a
HS		 396 int ret;
397
398 lbs_deb_enter(LBS_DEB_MESH);
399
876c9d3a 400 SET_MESH_FRAME(skb);
876c9d3a 401
9012b28a
HS		 402 ret = wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
403 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
404 return ret;
876c9d3a
MT		 405}
406
407/**
408 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
409 *
410 */
9012b28a
HS		 411static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
412{
413 int ret;
414
415 lbs_deb_enter(LBS_DEB_NET);
416
876c9d3a 417 UNSET_MESH_FRAME(skb);
9012b28a
HS		 418
419 ret = wlan_hard_start_xmit(skb, dev);
420 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
421 return ret;
876c9d3a
MT		 422}
423
424static void wlan_tx_timeout(struct net_device *dev)
425{
426 wlan_private *priv = (wlan_private *) dev->priv;
427
9012b28a 428 lbs_deb_enter(LBS_DEB_TX);
876c9d3a 429
9012b28a 430 lbs_pr_err("tx watch dog timeout\n");
876c9d3a
MT		 431
432 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
433 dev->trans_start = jiffies;
434
435 if (priv->adapter->currenttxskb) {
436 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
437 /* If we are here, we have not received feedback from
438 the previous packet. Assume TX_FAIL and move on. */
439 priv->adapter->eventcause = 0x01000000;
440 libertas_send_tx_feedback(priv);
441 } else
442 wake_up_interruptible(&priv->mainthread.waitq);
51d84f50 443 } else if (priv->adapter->connect_status == libertas_connected) {
876c9d3a 444 netif_wake_queue(priv->wlan_dev.netdev);
51d84f50
JC		 445 netif_wake_queue(priv->mesh_dev);
446 }
876c9d3a 447
9012b28a 448 lbs_deb_leave(LBS_DEB_TX);
876c9d3a
MT		 449}
450
451/**
452 * @brief This function returns the network statistics
453 *
454 * @param dev A pointer to wlan_private structure
455 * @return A pointer to net_device_stats structure
456 */
457static struct net_device_stats *wlan_get_stats(struct net_device *dev)
458{
459 wlan_private *priv = (wlan_private *) dev->priv;
460
461 return &priv->stats;
462}
463
464static int wlan_set_mac_address(struct net_device *dev, void *addr)
465{
466 int ret = 0;
467 wlan_private *priv = (wlan_private *) dev->priv;
468 wlan_adapter *adapter = priv->adapter;
469 struct sockaddr *phwaddr = addr;
470
9012b28a 471 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 472
473 memset(adapter->current_addr, 0, ETH_ALEN);
474
475 /* dev->dev_addr is 8 bytes */
476 lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
477
478 lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
479 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
480
481 ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
482 cmd_act_set,
483 cmd_option_waitforrsp, 0, NULL);
484
485 if (ret) {
9012b28a 486 lbs_deb_net("set MAC address failed\n");
876c9d3a
MT		 487 ret = -1;
488 goto done;
489 }
490
491 lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
492 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
78523daa
HS		 493 if (priv->mesh_dev)
494 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
876c9d3a
MT		 495
496done:
9012b28a 497 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 498 return ret;
499}
500
501static int wlan_copy_multicast_address(wlan_adapter * adapter,
502 struct net_device *dev)
503{
504 int i = 0;
505 struct dev_mc_list *mcptr = dev->mc_list;
506
507 for (i = 0; i < dev->mc_count; i++) {
508 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
509 mcptr = mcptr->next;
510 }
511
512 return i;
513
514}
515
516static void wlan_set_multicast_list(struct net_device *dev)
517{
518 wlan_private *priv = dev->priv;
519 wlan_adapter *adapter = priv->adapter;
520 int oldpacketfilter;
521
9012b28a 522 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 523
524 oldpacketfilter = adapter->currentpacketfilter;
525
526 if (dev->flags & IFF_PROMISC) {
9012b28a 527 lbs_deb_net("enable promiscuous mode\n");
876c9d3a
MT		 528 adapter->currentpacketfilter |=
529 cmd_act_mac_promiscuous_enable;
530 adapter->currentpacketfilter &=
531 ~(cmd_act_mac_all_multicast_enable |
532 cmd_act_mac_multicast_enable);
533 } else {
534 /* Multicast */
535 adapter->currentpacketfilter &=
536 ~cmd_act_mac_promiscuous_enable;
537
538 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
539 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
9012b28a 540 lbs_deb_net( "enabling all multicast\n");
876c9d3a
MT		 541 adapter->currentpacketfilter |=
542 cmd_act_mac_all_multicast_enable;
543 adapter->currentpacketfilter &=
544 ~cmd_act_mac_multicast_enable;
545 } else {
546 adapter->currentpacketfilter &=
547 ~cmd_act_mac_all_multicast_enable;
548
549 if (!dev->mc_count) {
9012b28a
HS		 550 lbs_deb_net("no multicast addresses, "
551 "disabling multicast\n");
876c9d3a
MT		 552 adapter->currentpacketfilter &=
553 ~cmd_act_mac_multicast_enable;
554 } else {
555 int i;
556
557 adapter->currentpacketfilter |=
558 cmd_act_mac_multicast_enable;
559
560 adapter->nr_of_multicastmacaddr =
561 wlan_copy_multicast_address(adapter, dev);
562
9012b28a 563 lbs_deb_net("multicast addresses: %d\n",
876c9d3a
MT		 564 dev->mc_count);
565
566 for (i = 0; i < dev->mc_count; i++) {
9012b28a
HS		 567 lbs_deb_net("Multicast address %d:"
568 MAC_FMT "\n", i,
876c9d3a
MT		 569 adapter->multicastlist[i][0],
570 adapter->multicastlist[i][1],
571 adapter->multicastlist[i][2],
572 adapter->multicastlist[i][3],
573 adapter->multicastlist[i][4],
574 adapter->multicastlist[i][5]);
575 }
9012b28a 576 /* send multicast addresses to firmware */
876c9d3a
MT		 577 libertas_prepare_and_send_command(priv,
578 cmd_mac_multicast_adr,
579 cmd_act_set, 0, 0,
580 NULL);
581 }
582 }
583 }
584
585 if (adapter->currentpacketfilter != oldpacketfilter) {
586 libertas_set_mac_packet_filter(priv);
587 }
588
9012b28a 589 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 590}
591
592/**
9012b28a
HS		 593 * @brief This function handles the major jobs in the WLAN driver.
594 * It handles all events generated by firmware, RX data received
595 * from firmware and TX data sent from kernel.
876c9d3a
MT		 596 *
597 * @param data A pointer to wlan_thread structure
598 * @return 0
599 */
600static int wlan_service_main_thread(void *data)
601{
602 struct wlan_thread *thread = data;
603 wlan_private *priv = thread->priv;
604 wlan_adapter *adapter = priv->adapter;
605 wait_queue_t wait;
606 u8 ireg = 0;
607
9012b28a 608 lbs_deb_enter(LBS_DEB_THREAD);
876c9d3a
MT		 609
610 wlan_activate_thread(thread);
611
612 init_waitqueue_entry(&wait, current);
613
614 for (;;) {
9012b28a 615 lbs_deb_thread( "main-thread 111: intcounter=%d "
876c9d3a
MT		 616 "currenttxskb=%p dnld_sent=%d\n",
617 adapter->intcounter,
618 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
619
620 add_wait_queue(&thread->waitq, &wait);
621 set_current_state(TASK_INTERRUPTIBLE);
622 spin_lock_irq(&adapter->driver_lock);
623 if ((adapter->psstate == PS_STATE_SLEEP) ||
624 (!adapter->intcounter
625 && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
626 list_empty(&adapter->cmdpendingq)))) {
9012b28a 627 lbs_deb_thread(
876c9d3a
MT		 628 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
629 adapter->connect_status, adapter->intcounter,
630 adapter->psmode, adapter->psstate);
631 spin_unlock_irq(&adapter->driver_lock);
632 schedule();
633 } else
634 spin_unlock_irq(&adapter->driver_lock);
635
636
9012b28a 637 lbs_deb_thread(
876c9d3a
MT		 638 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
639 "dnld_sent=%d\n", adapter->intcounter,
640 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
641
642 set_current_state(TASK_RUNNING);
643 remove_wait_queue(&thread->waitq, &wait);
644 try_to_freeze();
645
9012b28a 646 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 647 "dnld_sent=%d\n",
648 adapter->intcounter,
649 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
650
651 if (kthread_should_stop()
652 || adapter->surpriseremoved) {
9012b28a 653 lbs_deb_thread(
876c9d3a
MT		 654 "main-thread: break from main thread: surpriseremoved=0x%x\n",
655 adapter->surpriseremoved);
656 break;
657 }
658
659
660 spin_lock_irq(&adapter->driver_lock);
661 if (adapter->intcounter) {
662 u8 int_status;
663 adapter->intcounter = 0;
664 int_status = libertas_sbi_get_int_status(priv, &ireg);
665
666 if (int_status) {
9012b28a 667 lbs_deb_thread(
876c9d3a
MT		 668 "main-thread: reading HOST_INT_STATUS_REG failed\n");
669 spin_unlock_irq(&adapter->driver_lock);
670 continue;
671 }
672 adapter->hisregcpy |= ireg;
673 }
674
9012b28a 675 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 676 "dnld_sent=%d\n",
677 adapter->intcounter,
678 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
679
680 /* command response? */
681 if (adapter->hisregcpy & his_cmdupldrdy) {
9012b28a 682 lbs_deb_thread("main-thread: cmd response ready\n");
876c9d3a
MT		 683
684 adapter->hisregcpy &= ~his_cmdupldrdy;
685 spin_unlock_irq(&adapter->driver_lock);
686 libertas_process_rx_command(priv);
687 spin_lock_irq(&adapter->driver_lock);
688 }
689
690 /* Any Card Event */
691 if (adapter->hisregcpy & his_cardevent) {
9012b28a 692 lbs_deb_thread("main-thread: Card Event Activity\n");
876c9d3a
MT		 693
694 adapter->hisregcpy &= ~his_cardevent;
695
696 if (libertas_sbi_read_event_cause(priv)) {
697 lbs_pr_alert(
9012b28a 698 "main-thread: libertas_sbi_read_event_cause failed\n");
876c9d3a
MT		 699 spin_unlock_irq(&adapter->driver_lock);
700 continue;
701 }
702 spin_unlock_irq(&adapter->driver_lock);
703 libertas_process_event(priv);
704 } else
705 spin_unlock_irq(&adapter->driver_lock);
706
707 /* Check if we need to confirm Sleep Request received previously */
708 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
709 if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
710 if (adapter->connect_status ==
711 libertas_connected) {
9012b28a 712 lbs_deb_thread(
876c9d3a
MT		 713 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
714 "dnld_sent=%d cur_cmd=%p, confirm now\n",
715 adapter->intcounter,
716 adapter->currenttxskb,
717 priv->wlan_dev.dnld_sent,
718 adapter->cur_cmd);
719
720 libertas_ps_confirm_sleep(priv,
721 (u16) adapter->psmode);
722 } else {
723 /* workaround for firmware sending
724 * deauth/linkloss event immediately
725 * after sleep request, remove this
726 * after firmware fixes it
727 */
728 adapter->psstate = PS_STATE_AWAKE;
729 lbs_pr_alert(
730 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
731 }
732 }
733 }
734
735 /* The PS state is changed during processing of Sleep Request
736 * event above
737 */
738 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
739 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
740 continue;
741
742 /* Execute the next command */
743 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
744 libertas_execute_next_command(priv);
745
746 /* Wake-up command waiters which can't sleep in
747 * libertas_prepare_and_send_command
748 */
749 if (!adapter->nr_cmd_pending)
750 wake_up_all(&adapter->cmd_pending);
751
752 libertas_tx_runqueue(priv);
753 }
754
755 del_timer(&adapter->command_timer);
756 adapter->nr_cmd_pending = 0;
757 wake_up_all(&adapter->cmd_pending);
758 wlan_deactivate_thread(thread);
759
9012b28a 760 lbs_deb_leave(LBS_DEB_THREAD);
876c9d3a
MT		 761 return 0;
762}
763
764/**
765 * @brief This function adds the card. it will probe the
766 * card, allocate the wlan_priv and initialize the device.
767 *
768 * @param card A pointer to card
769 * @return A pointer to wlan_private structure
770 */
771wlan_private *wlan_add_card(void *card)
772{
773 struct net_device *dev = NULL;
876c9d3a
MT		 774 wlan_private *priv = NULL;
775
9012b28a 776 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 777
778 /* Allocate an Ethernet device and register it */
779 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
9012b28a 780 lbs_pr_err("init ethX device failed\n");
876c9d3a
MT		 781 return NULL;
782 }
876c9d3a
MT		 783 priv = dev->priv;
784
785 /* allocate buffer for wlan_adapter */
fb3dddf2 786 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
9012b28a 787 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
fb3dddf2 788 goto err_kzalloc;
876c9d3a
MT		 789 }
790
876c9d3a
MT		 791 priv->wlan_dev.netdev = dev;
792 priv->wlan_dev.card = card;
793 priv->mesh_open = 0;
794 priv->infra_open = 0;
876c9d3a
MT		 795
796 SET_MODULE_OWNER(dev);
876c9d3a
MT		 797
798 /* Setup the OS Interface to our functions */
799 dev->open = wlan_open;
800 dev->hard_start_xmit = wlan_pre_start_xmit;
801 dev->stop = wlan_close;
802 dev->do_ioctl = libertas_do_ioctl;
803 dev->set_mac_address = wlan_set_mac_address;
876c9d3a
MT		 804 dev->tx_timeout = wlan_tx_timeout;
805 dev->get_stats = wlan_get_stats;
fb3dddf2 806 dev->watchdog_timeo = 5 * HZ;
876c9d3a 807 dev->ethtool_ops = &libertas_ethtool_ops;
876c9d3a
MT		 808#ifdef WIRELESS_EXT
809 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
876c9d3a
MT		 810#endif
811#define NETIF_F_DYNALLOC 16
812 dev->features |= NETIF_F_DYNALLOC;
813 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
814 dev->set_multicast_list = wlan_set_multicast_list;
815
816 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
817 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
818
819 spin_lock_init(&priv->adapter->driver_lock);
820 init_waitqueue_head(&priv->adapter->cmd_pending);
821 priv->adapter->nr_cmd_pending = 0;
32a74b7c
HS		 822 goto done;
823
824err_kzalloc:
825 free_netdev(dev);
826done:
827 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
828 return priv;
829}
830
831int libertas_activate_card(wlan_private *priv)
832{
833 struct net_device *dev = priv->wlan_dev.netdev;
834 int ret = -1;
835
836 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a 837
9012b28a 838 lbs_deb_thread("Starting kthread...\n");
876c9d3a
MT		 839 priv->mainthread.priv = priv;
840 wlan_create_thread(wlan_service_main_thread,
841 &priv->mainthread, "wlan_main_service");
842
843 priv->assoc_thread =
844 create_singlethread_workqueue("libertas_assoc");
eb3ce631 845 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
876c9d3a
MT		 846
847 /*
848 * Register the device. Fillup the private data structure with
849 * relevant information from the card and request for the required
850 * IRQ.
851 */
852 if (libertas_sbi_register_dev(priv) < 0) {
9012b28a 853 lbs_pr_err("failed to register WLAN device\n");
876c9d3a
MT		 854 goto err_registerdev;
855 }
856
857 /* init FW and HW */
858 if (libertas_init_fw(priv)) {
9012b28a 859 lbs_pr_err("firmware init failed\n");
876c9d3a
MT		 860 goto err_registerdev;
861 }
862
863 if (register_netdev(dev)) {
9012b28a 864 lbs_pr_err("cannot register ethX device\n");
876c9d3a
MT		 865 goto err_init_fw;
866 }
867
9012b28a 868 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
876c9d3a
MT		 869
870 libertas_debugfs_init_one(priv, dev);
871
32a74b7c
HS		 872 ret = 0;
873 goto done;
876c9d3a 874
876c9d3a
MT		 875err_init_fw:
876 libertas_sbi_unregister_dev(priv);
877err_registerdev:
878 destroy_workqueue(priv->assoc_thread);
879 /* Stop the thread servicing the interrupts */
880 wake_up_interruptible(&priv->mainthread.waitq);
881 wlan_terminate_thread(&priv->mainthread);
882 kfree(priv->adapter);
876c9d3a 883 free_netdev(dev);
32a74b7c
HS		 884done:
885 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
886 return ret;
876c9d3a
MT		 887}
888
78523daa
HS		 889/**
890 * @brief This function adds mshX interface
891 *
892 * @param priv A pointer to the wlan_private structure
893 * @return 0 if successful, -X otherwise
894 */
895int wlan_add_mesh(wlan_private *priv)
896{
897 struct net_device *mesh_dev = NULL;
898 int ret = 0;
899
900 lbs_deb_enter(LBS_DEB_MESH);
901
902 /* Allocate a virtual mesh device */
903 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
904 lbs_deb_mesh("init mshX device failed\n");
905 ret = -ENOMEM;
906 goto done;
907 }
908 mesh_dev->priv = priv;
909 priv->mesh_dev = mesh_dev;
910
911 SET_MODULE_OWNER(mesh_dev);
912
913 mesh_dev->open = mesh_open;
914 mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
915 mesh_dev->stop = mesh_close;
916 mesh_dev->do_ioctl = libertas_do_ioctl;
917 mesh_dev->get_stats = wlan_get_stats;
918 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
919 memcpy(mesh_dev->dev_addr, priv->wlan_dev.netdev->dev_addr,
920 sizeof(priv->wlan_dev.netdev->dev_addr));
921
922#ifdef WIRELESS_EXT
923 mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
924#endif
925#define NETIF_F_DYNALLOC 16
926
927 /* Register virtual mesh interface */
928 ret = register_netdev(mesh_dev);
929 if (ret) {
930 lbs_pr_err("cannot register mshX virtual interface\n");
931 goto err_free;
932 }
933
934 ret = device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
935 if (ret)
936 goto err_unregister;
937
938 /* Everything successful */
939 ret = 0;
940 goto done;
941
942
943err_unregister:
944 unregister_netdev(mesh_dev);
945
946err_free:
947 free_netdev(mesh_dev);
948
949done:
950 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
951 return ret;
952}
953
876c9d3a
MT		 954static void wake_pending_cmdnodes(wlan_private *priv)
955{
956 struct cmd_ctrl_node *cmdnode;
957 unsigned long flags;
958
9012b28a
HS		 959 lbs_deb_enter(LBS_DEB_CMD);
960
876c9d3a
MT		 961 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
962 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
963 cmdnode->cmdwaitqwoken = 1;
964 wake_up_interruptible(&cmdnode->cmdwait_q);
965 }
966 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
967}
968
969
1ac812f1 970int wlan_remove_card(wlan_private *priv)
876c9d3a 971{
876c9d3a
MT		 972 wlan_adapter *adapter;
973 struct net_device *dev;
876c9d3a 974 union iwreq_data wrqu;
876c9d3a 975
9012b28a 976 lbs_deb_enter(LBS_DEB_NET);
876c9d3a 977
9012b28a
HS		 978 if (!priv)
979 goto out;
876c9d3a
MT		 980
981 adapter = priv->adapter;
982
9012b28a
HS		 983 if (!adapter)
984 goto out;
876c9d3a
MT		 985
986 dev = priv->wlan_dev.netdev;
876c9d3a 987
876c9d3a
MT		 988 netif_stop_queue(priv->wlan_dev.netdev);
989 netif_carrier_off(priv->wlan_dev.netdev);
990
991 wake_pending_cmdnodes(priv);
992
876c9d3a
MT		 993 unregister_netdev(dev);
994
995 cancel_delayed_work(&priv->assoc_work);
996 destroy_workqueue(priv->assoc_thread);
997
998 if (adapter->psmode == wlan802_11powermodemax_psp) {
999 adapter->psmode = wlan802_11powermodecam;
1000 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
1001 }
1002
1003 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1004 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1005 wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
1006
876c9d3a
MT		 1007 adapter->surpriseremoved = 1;
1008
1009 /* Stop the thread servicing the interrupts */
1010 wlan_terminate_thread(&priv->mainthread);
1011
1012 libertas_debugfs_remove_one(priv);
1013
9012b28a 1014 lbs_deb_net("free adapter\n");
876c9d3a
MT		 1015 libertas_free_adapter(priv);
1016
9012b28a 1017 lbs_deb_net("unregister finish\n");
876c9d3a
MT		 1018
1019 priv->wlan_dev.netdev = NULL;
876c9d3a 1020 free_netdev(dev);
876c9d3a 1021
9012b28a
HS		 1022out:
1023 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 1024 return 0;
1025}
1026
78523daa
HS		 1027void wlan_remove_mesh(wlan_private *priv)
1028{
1029 struct net_device *mesh_dev;
1030
1031 lbs_deb_enter(LBS_DEB_NET);
1032
1033 if (!priv)
1034 goto out;
1035
1036 mesh_dev = priv->mesh_dev;
1037
1038 netif_stop_queue(mesh_dev);
51d84f50 1039 netif_carrier_off(priv->mesh_dev);
78523daa
HS		 1040
1041 device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
1042 unregister_netdev(mesh_dev);
1043
1044 priv->mesh_dev = NULL ;
1045 free_netdev(mesh_dev);
1046
1047out:
1048 lbs_deb_leave(LBS_DEB_NET);
1049}
1050
876c9d3a
MT		 1051/**
1052 * @brief This function finds the CFP in
1053 * region_cfp_table based on region and band parameter.
1054 *
1055 * @param region The region code
1056 * @param band The band
1057 * @param cfp_no A pointer to CFP number
1058 * @return A pointer to CFP
1059 */
1060struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1061{
1062 int i, end;
1063
9012b28a 1064 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1065
1066 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1067
1068 for (i = 0; i < end ; i++) {
9012b28a 1069 lbs_deb_main("region_cfp_table[i].region=%d\n",
876c9d3a
MT		 1070 region_cfp_table[i].region);
1071 if (region_cfp_table[i].region == region) {
1072 *cfp_no = region_cfp_table[i].cfp_no_BG;
9012b28a 1073 lbs_deb_leave(LBS_DEB_MAIN);
876c9d3a
MT		 1074 return region_cfp_table[i].cfp_BG;
1075 }
1076 }
1077
9012b28a 1078 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
876c9d3a
MT		 1079 return NULL;
1080}
1081
1082int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1083{
1084 wlan_adapter *adapter = priv->adapter;
9012b28a 1085 int ret = 0;
876c9d3a
MT		 1086 int i = 0;
1087
1088 struct chan_freq_power *cfp;
1089 int cfp_no;
1090
9012b28a 1091 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1092
1093 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1094
1095 {
1096 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1097 if (cfp != NULL) {
1098 adapter->region_channel[i].nrcfp = cfp_no;
1099 adapter->region_channel[i].CFP = cfp;
1100 } else {
9012b28a 1101 lbs_deb_main("wrong region code %#x in band B/G\n",
876c9d3a 1102 region);
9012b28a
HS		 1103 ret = -1;
1104 goto out;
876c9d3a
MT		 1105 }
1106 adapter->region_channel[i].valid = 1;
1107 adapter->region_channel[i].region = region;
1108 adapter->region_channel[i].band = band;
1109 i++;
1110 }
9012b28a
HS		 1111out:
1112 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1113 return ret;
876c9d3a
MT		 1114}
1115
1116/**
1117 * @brief This function handles the interrupt. it will change PS
1118 * state if applicable. it will wake up main_thread to handle
1119 * the interrupt event as well.
1120 *
1121 * @param dev A pointer to net_device structure
1122 * @return n/a
1123 */
1124void libertas_interrupt(struct net_device *dev)
1125{
1126 wlan_private *priv = dev->priv;
1127
ed37b516 1128 lbs_deb_enter(LBS_DEB_THREAD);
876c9d3a 1129
ed37b516 1130 lbs_deb_thread("libertas_interrupt: intcounter=%d\n",
876c9d3a
MT		 1131 priv->adapter->intcounter);
1132
1133 priv->adapter->intcounter++;
1134
1135 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1136 priv->adapter->psstate = PS_STATE_AWAKE;
1137 netif_wake_queue(dev);
51d84f50 1138 netif_wake_queue(priv->mesh_dev);
876c9d3a
MT		 1139 }
1140
1141 wake_up_interruptible(&priv->mainthread.waitq);
1142
ed37b516 1143 lbs_deb_leave(LBS_DEB_THREAD);
876c9d3a
MT		 1144}
1145
1146static int wlan_init_module(void)
1147{
1148 int ret = 0;
1149
9012b28a 1150 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a
MT		 1151
1152 if (libertas_fw_name == NULL) {
1153 libertas_fw_name = default_fw_name;
1154 }
1155
1156 libertas_debugfs_init();
1157
1158 if (libertas_sbi_register()) {
1159 ret = -1;
1160 libertas_debugfs_remove();
876c9d3a
MT		 1161 }
1162
9012b28a 1163 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
876c9d3a
MT		 1164 return ret;
1165}
1166
1167static void wlan_cleanup_module(void)
1168{
9012b28a 1169 lbs_deb_enter(LBS_DEB_MAIN);
876c9d3a 1170
876c9d3a
MT		 1171 libertas_sbi_unregister();
1172 libertas_debugfs_remove();
1173
9012b28a 1174 lbs_deb_leave(LBS_DEB_MAIN);
876c9d3a
MT		 1175}
1176
1177module_init(wlan_init_module);
1178module_exit(wlan_cleanup_module);
1179
1180MODULE_DESCRIPTION("M-WLAN Driver");
1181MODULE_AUTHOR("Marvell International Ltd.");
1182MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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