projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] libertas: indirect all hardware access via hw_XXXX functions
[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"
876c9d3a
MT		 18#include "decl.h"
19#include "dev.h"
20#include "fw.h"
21#include "wext.h"
22#include "debugfs.h"
23#include "assoc.h"
24
3ce40232
DW		 25#define DRIVER_RELEASE_VERSION "320.p0"
26const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
27#ifdef DEBUG
28 "-dbg"
29#endif
30 "";
31
a46c6410
HS		 32
33/* Module parameters */
34unsigned int libertas_debug = 0;
35module_param(libertas_debug, int, 0644);
36
37
38
876c9d3a
MT		 39#define WLAN_TX_PWR_DEFAULT 20 /*100mW */
40#define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
41#define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
42#define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
43#define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
44
45/* Format { channel, frequency (MHz), maxtxpower } */
46/* band: 'B/G', region: USA FCC/Canada IC */
47static struct chan_freq_power channel_freq_power_US_BG[] = {
48 {1, 2412, WLAN_TX_PWR_US_DEFAULT},
49 {2, 2417, WLAN_TX_PWR_US_DEFAULT},
50 {3, 2422, WLAN_TX_PWR_US_DEFAULT},
51 {4, 2427, WLAN_TX_PWR_US_DEFAULT},
52 {5, 2432, WLAN_TX_PWR_US_DEFAULT},
53 {6, 2437, WLAN_TX_PWR_US_DEFAULT},
54 {7, 2442, WLAN_TX_PWR_US_DEFAULT},
55 {8, 2447, WLAN_TX_PWR_US_DEFAULT},
56 {9, 2452, WLAN_TX_PWR_US_DEFAULT},
57 {10, 2457, WLAN_TX_PWR_US_DEFAULT},
58 {11, 2462, WLAN_TX_PWR_US_DEFAULT}
59};
60
61/* band: 'B/G', region: Europe ETSI */
62static struct chan_freq_power channel_freq_power_EU_BG[] = {
63 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
64 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
65 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
66 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
67 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
68 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
69 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
70 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
71 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
72 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
73 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
74 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
75 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
76};
77
78/* band: 'B/G', region: Spain */
79static struct chan_freq_power channel_freq_power_SPN_BG[] = {
80 {10, 2457, WLAN_TX_PWR_DEFAULT},
81 {11, 2462, WLAN_TX_PWR_DEFAULT}
82};
83
84/* band: 'B/G', region: France */
85static struct chan_freq_power channel_freq_power_FR_BG[] = {
86 {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
87 {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
88 {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
89 {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
90};
91
92/* band: 'B/G', region: Japan */
93static struct chan_freq_power channel_freq_power_JPN_BG[] = {
94 {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
95 {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
96 {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
97 {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
98 {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
99 {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
100 {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
101 {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
102 {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
103 {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
104 {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
105 {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
106 {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
107 {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
108};
109
110/**
111 * the structure for channel, frequency and power
112 */
113struct region_cfp_table {
114 u8 region;
115 struct chan_freq_power *cfp_BG;
116 int cfp_no_BG;
117};
118
119/**
120 * the structure for the mapping between region and CFP
121 */
122static struct region_cfp_table region_cfp_table[] = {
123 {0x10, /*US FCC */
124 channel_freq_power_US_BG,
125 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
126 }
127 ,
128 {0x20, /*CANADA IC */
129 channel_freq_power_US_BG,
130 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
131 }
132 ,
133 {0x30, /*EU*/ channel_freq_power_EU_BG,
134 sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
135 }
136 ,
137 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
138 sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
139 }
140 ,
141 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
142 sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
143 }
144 ,
145 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
146 sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
147 }
148 ,
149/*Add new region here */
150};
151
876c9d3a
MT		 152/**
153 * the rates supported
154 */
155u8 libertas_supported_rates[G_SUPPORTED_RATES] =
156 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1570 };
158
159/**
160 * the rates supported for ad-hoc G mode
161 */
162u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
163 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1640 };
165
166/**
167 * the rates supported for ad-hoc B mode
168 */
169u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
170
876c9d3a
MT		 171/**
172 * the table to keep region code
173 */
174u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
175 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
176
177static u8 *default_fw_name = "usb8388.bin";
178
179/**
180 * Attributes exported through sysfs
181 */
876c9d3a
MT		 182
183/**
184 * @brief Get function for sysfs attribute libertas_mpp
185 */
b3f1b8cf
JL		 186static ssize_t libertas_mpp_get(struct device * dev,
187 struct device_attribute *attr, char * buf) {
876c9d3a
MT		 188 struct cmd_ds_mesh_access mesh_access;
189
190 memset(&mesh_access, 0, sizeof(mesh_access));
191 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
192 cmd_mesh_access,
193 cmd_act_mesh_get_mpp,
194 cmd_option_waitforrsp, 0, (void *)&mesh_access);
195
196 return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
197}
198
199/**
200 * @brief Set function for sysfs attribute libertas_mpp
201 */
b3f1b8cf
JL		 202static ssize_t libertas_mpp_set(struct device * dev,
203 struct device_attribute *attr, const char * buf, size_t count) {
876c9d3a
MT		 204 struct cmd_ds_mesh_access mesh_access;
205
876c9d3a
MT		 206 memset(&mesh_access, 0, sizeof(mesh_access));
207 sscanf(buf, "%d", &(mesh_access.data[0]));
208 libertas_prepare_and_send_command((to_net_dev(dev))->priv,
209 cmd_mesh_access,
210 cmd_act_mesh_set_mpp,
211 cmd_option_waitforrsp, 0, (void *)&mesh_access);
212 return strlen(buf);
213}
214
215/**
216 * libertas_mpp attribute to be exported per mshX interface
217 * through sysfs (/sys/class/net/mshX/libertas-mpp)
218 */
b3f1b8cf 219static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
876c9d3a
MT		 220 libertas_mpp_set );
221
222/**
223 * @brief Check if the device can be open and wait if necessary.
224 *
225 * @param dev A pointer to net_device structure
226 * @return 0
227 *
228 * For USB adapter, on some systems the device open handler will be
229 * called before FW ready. Use the following flag check and wait
230 * function to work around the issue.
231 *
232 */
9012b28a
HS		 233static int pre_open_check(struct net_device *dev)
234{
876c9d3a
MT		 235 wlan_private *priv = (wlan_private *) dev->priv;
236 wlan_adapter *adapter = priv->adapter;
237 int i = 0;
238
239 while (!adapter->fw_ready && i < 20) {
240 i++;
241 msleep_interruptible(100);
242 }
243 if (!adapter->fw_ready) {
9012b28a 244 lbs_pr_err("firmware not ready\n");
876c9d3a
MT		 245 return -1;
246 }
247
248 return 0;
249}
250
251/**
252 * @brief This function opens the device
253 *
254 * @param dev A pointer to net_device structure
255 * @return 0
256 */
257static int wlan_dev_open(struct net_device *dev)
258{
259 wlan_private *priv = (wlan_private *) dev->priv;
260 wlan_adapter *adapter = priv->adapter;
261
9012b28a 262 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 263
264 priv->open = 1;
265
266 if (adapter->connect_status == libertas_connected) {
267 netif_carrier_on(priv->wlan_dev.netdev);
51d84f50
JC		 268 netif_carrier_on(priv->mesh_dev);
269 } else {
876c9d3a 270 netif_carrier_off(priv->wlan_dev.netdev);
51d84f50
JC		 271 netif_carrier_off(priv->mesh_dev);
272 }
876c9d3a 273
9012b28a 274 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 275 return 0;
276}
277/**
278 * @brief This function opens the mshX interface
279 *
280 * @param dev A pointer to net_device structure
281 * @return 0
282 */
283static int mesh_open(struct net_device *dev)
284{
285 wlan_private *priv = (wlan_private *) dev->priv ;
286
78523daa 287 if (pre_open_check(dev) == -1)
876c9d3a
MT		 288 return -1;
289 priv->mesh_open = 1 ;
51d84f50 290 netif_wake_queue(priv->mesh_dev);
876c9d3a
MT		 291 if (priv->infra_open == 0)
292 return wlan_dev_open(priv->wlan_dev.netdev) ;
293 return 0;
294}
295
296/**
297 * @brief This function opens the ethX interface
298 *
299 * @param dev A pointer to net_device structure
300 * @return 0
301 */
302static int wlan_open(struct net_device *dev)
303{
304 wlan_private *priv = (wlan_private *) dev->priv ;
305
306 if(pre_open_check(dev) == -1)
307 return -1;
308 priv->infra_open = 1 ;
309 netif_wake_queue(priv->wlan_dev.netdev);
310 if (priv->open == 0)
311 return wlan_dev_open(priv->wlan_dev.netdev) ;
312 return 0;
313}
314
315static int wlan_dev_close(struct net_device *dev)
316{
317 wlan_private *priv = dev->priv;
318
9012b28a 319 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 320
321 netif_carrier_off(priv->wlan_dev.netdev);
51d84f50 322 netif_carrier_off(priv->mesh_dev);
876c9d3a
MT		 323 priv->open = 0;
324
9012b28a 325 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 326 return 0;
327}
328
329/**
330 * @brief This function closes the mshX interface
331 *
332 * @param dev A pointer to net_device structure
333 * @return 0
334 */
335static int mesh_close(struct net_device *dev)
336{
337 wlan_private *priv = (wlan_private *) (dev->priv);
338
339 priv->mesh_open = 0;
340 netif_stop_queue(priv->mesh_dev);
341 if (priv->infra_open == 0)
342 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
343 else
344 return 0;
345}
346
347/**
348 * @brief This function closes the ethX interface
349 *
350 * @param dev A pointer to net_device structure
351 * @return 0
352 */
78523daa
HS		 353static int wlan_close(struct net_device *dev)
354{
876c9d3a
MT		 355 wlan_private *priv = (wlan_private *) dev->priv;
356
357 netif_stop_queue(priv->wlan_dev.netdev);
358 priv->infra_open = 0;
359 if (priv->mesh_open == 0)
360 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
361 else
362 return 0;
363}
364
365
876c9d3a
MT		 366static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
367{
368 int ret = 0;
369 wlan_private *priv = dev->priv;
370
9012b28a 371 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 372
373 if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
374 priv->stats.tx_dropped++;
375 goto done;
376 }
377
378 netif_stop_queue(priv->wlan_dev.netdev);
51d84f50 379 netif_stop_queue(priv->mesh_dev);
876c9d3a
MT		 380
381 if (libertas_process_tx(priv, skb) == 0)
382 dev->trans_start = jiffies;
383done:
9012b28a 384 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 385 return ret;
386}
387
388/**
389 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
390 *
391 */
392static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
393{
394 wlan_private *priv = dev->priv;
9012b28a
HS		 395 int ret;
396
397 lbs_deb_enter(LBS_DEB_MESH);
398
876c9d3a 399 SET_MESH_FRAME(skb);
876c9d3a 400
9012b28a
HS		 401 ret = wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
402 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
403 return ret;
876c9d3a
MT		 404}
405
406/**
407 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
408 *
409 */
9012b28a
HS		 410static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
411{
412 int ret;
413
414 lbs_deb_enter(LBS_DEB_NET);
415
876c9d3a 416 UNSET_MESH_FRAME(skb);
9012b28a
HS		 417
418 ret = wlan_hard_start_xmit(skb, dev);
419 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
420 return ret;
876c9d3a
MT		 421}
422
423static void wlan_tx_timeout(struct net_device *dev)
424{
425 wlan_private *priv = (wlan_private *) dev->priv;
426
9012b28a 427 lbs_deb_enter(LBS_DEB_TX);
876c9d3a 428
9012b28a 429 lbs_pr_err("tx watch dog timeout\n");
876c9d3a
MT		 430
431 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
432 dev->trans_start = jiffies;
433
434 if (priv->adapter->currenttxskb) {
435 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
436 /* If we are here, we have not received feedback from
437 the previous packet. Assume TX_FAIL and move on. */
438 priv->adapter->eventcause = 0x01000000;
439 libertas_send_tx_feedback(priv);
440 } else
441 wake_up_interruptible(&priv->mainthread.waitq);
51d84f50 442 } else if (priv->adapter->connect_status == libertas_connected) {
876c9d3a 443 netif_wake_queue(priv->wlan_dev.netdev);
51d84f50
JC		 444 netif_wake_queue(priv->mesh_dev);
445 }
876c9d3a 446
9012b28a 447 lbs_deb_leave(LBS_DEB_TX);
876c9d3a
MT		 448}
449
450/**
451 * @brief This function returns the network statistics
452 *
453 * @param dev A pointer to wlan_private structure
454 * @return A pointer to net_device_stats structure
455 */
456static struct net_device_stats *wlan_get_stats(struct net_device *dev)
457{
458 wlan_private *priv = (wlan_private *) dev->priv;
459
460 return &priv->stats;
461}
462
463static int wlan_set_mac_address(struct net_device *dev, void *addr)
464{
465 int ret = 0;
466 wlan_private *priv = (wlan_private *) dev->priv;
467 wlan_adapter *adapter = priv->adapter;
468 struct sockaddr *phwaddr = addr;
469
9012b28a 470 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 471
472 memset(adapter->current_addr, 0, ETH_ALEN);
473
474 /* dev->dev_addr is 8 bytes */
475 lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
476
477 lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
478 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
479
480 ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
481 cmd_act_set,
482 cmd_option_waitforrsp, 0, NULL);
483
484 if (ret) {
9012b28a 485 lbs_deb_net("set MAC address failed\n");
876c9d3a
MT		 486 ret = -1;
487 goto done;
488 }
489
490 lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
491 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
78523daa
HS		 492 if (priv->mesh_dev)
493 memcpy(priv->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
876c9d3a
MT		 494
495done:
9012b28a 496 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
876c9d3a
MT		 497 return ret;
498}
499
500static int wlan_copy_multicast_address(wlan_adapter * adapter,
501 struct net_device *dev)
502{
503 int i = 0;
504 struct dev_mc_list *mcptr = dev->mc_list;
505
506 for (i = 0; i < dev->mc_count; i++) {
507 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
508 mcptr = mcptr->next;
509 }
510
511 return i;
512
513}
514
515static void wlan_set_multicast_list(struct net_device *dev)
516{
517 wlan_private *priv = dev->priv;
518 wlan_adapter *adapter = priv->adapter;
519 int oldpacketfilter;
520
9012b28a 521 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 522
523 oldpacketfilter = adapter->currentpacketfilter;
524
525 if (dev->flags & IFF_PROMISC) {
9012b28a 526 lbs_deb_net("enable promiscuous mode\n");
876c9d3a
MT		 527 adapter->currentpacketfilter |=
528 cmd_act_mac_promiscuous_enable;
529 adapter->currentpacketfilter &=
530 ~(cmd_act_mac_all_multicast_enable |
531 cmd_act_mac_multicast_enable);
532 } else {
533 /* Multicast */
534 adapter->currentpacketfilter &=
535 ~cmd_act_mac_promiscuous_enable;
536
537 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
538 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
9012b28a 539 lbs_deb_net( "enabling all multicast\n");
876c9d3a
MT		 540 adapter->currentpacketfilter |=
541 cmd_act_mac_all_multicast_enable;
542 adapter->currentpacketfilter &=
543 ~cmd_act_mac_multicast_enable;
544 } else {
545 adapter->currentpacketfilter &=
546 ~cmd_act_mac_all_multicast_enable;
547
548 if (!dev->mc_count) {
9012b28a
HS		 549 lbs_deb_net("no multicast addresses, "
550 "disabling multicast\n");
876c9d3a
MT		 551 adapter->currentpacketfilter &=
552 ~cmd_act_mac_multicast_enable;
553 } else {
554 int i;
555
556 adapter->currentpacketfilter |=
557 cmd_act_mac_multicast_enable;
558
559 adapter->nr_of_multicastmacaddr =
560 wlan_copy_multicast_address(adapter, dev);
561
9012b28a 562 lbs_deb_net("multicast addresses: %d\n",
876c9d3a
MT		 563 dev->mc_count);
564
565 for (i = 0; i < dev->mc_count; i++) {
9012b28a
HS		 566 lbs_deb_net("Multicast address %d:"
567 MAC_FMT "\n", i,
876c9d3a
MT		 568 adapter->multicastlist[i][0],
569 adapter->multicastlist[i][1],
570 adapter->multicastlist[i][2],
571 adapter->multicastlist[i][3],
572 adapter->multicastlist[i][4],
573 adapter->multicastlist[i][5]);
574 }
9012b28a 575 /* send multicast addresses to firmware */
876c9d3a
MT		 576 libertas_prepare_and_send_command(priv,
577 cmd_mac_multicast_adr,
578 cmd_act_set, 0, 0,
579 NULL);
580 }
581 }
582 }
583
584 if (adapter->currentpacketfilter != oldpacketfilter) {
585 libertas_set_mac_packet_filter(priv);
586 }
587
9012b28a 588 lbs_deb_leave(LBS_DEB_NET);
876c9d3a
MT		 589}
590
591/**
9012b28a
HS		 592 * @brief This function handles the major jobs in the WLAN driver.
593 * It handles all events generated by firmware, RX data received
594 * from firmware and TX data sent from kernel.
876c9d3a
MT		 595 *
596 * @param data A pointer to wlan_thread structure
597 * @return 0
598 */
599static int wlan_service_main_thread(void *data)
600{
601 struct wlan_thread *thread = data;
602 wlan_private *priv = thread->priv;
603 wlan_adapter *adapter = priv->adapter;
604 wait_queue_t wait;
605 u8 ireg = 0;
606
9012b28a 607 lbs_deb_enter(LBS_DEB_THREAD);
876c9d3a
MT		 608
609 wlan_activate_thread(thread);
610
611 init_waitqueue_entry(&wait, current);
612
613 for (;;) {
9012b28a 614 lbs_deb_thread( "main-thread 111: intcounter=%d "
876c9d3a
MT		 615 "currenttxskb=%p dnld_sent=%d\n",
616 adapter->intcounter,
617 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
618
619 add_wait_queue(&thread->waitq, &wait);
620 set_current_state(TASK_INTERRUPTIBLE);
621 spin_lock_irq(&adapter->driver_lock);
622 if ((adapter->psstate == PS_STATE_SLEEP) ||
623 (!adapter->intcounter
624 && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
625 list_empty(&adapter->cmdpendingq)))) {
9012b28a 626 lbs_deb_thread(
876c9d3a
MT		 627 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
628 adapter->connect_status, adapter->intcounter,
629 adapter->psmode, adapter->psstate);
630 spin_unlock_irq(&adapter->driver_lock);
631 schedule();
632 } else
633 spin_unlock_irq(&adapter->driver_lock);
634
635
9012b28a 636 lbs_deb_thread(
876c9d3a
MT		 637 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
638 "dnld_sent=%d\n", adapter->intcounter,
639 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
640
641 set_current_state(TASK_RUNNING);
642 remove_wait_queue(&thread->waitq, &wait);
643 try_to_freeze();
644
9012b28a 645 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 646 "dnld_sent=%d\n",
647 adapter->intcounter,
648 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
649
650 if (kthread_should_stop()
651 || adapter->surpriseremoved) {
9012b28a 652 lbs_deb_thread(
876c9d3a
MT		 653 "main-thread: break from main thread: surpriseremoved=0x%x\n",
654 adapter->surpriseremoved);
655 break;
656 }
657
658
659 spin_lock_irq(&adapter->driver_lock);
660 if (adapter->intcounter) {
661 u8 int_status;
662 adapter->intcounter = 0;
208fdd2f 663 int_status = priv->hw_get_int_status(priv, &ireg);
876c9d3a
MT		 664
665 if (int_status) {
9012b28a 666 lbs_deb_thread(
876c9d3a
MT		 667 "main-thread: reading HOST_INT_STATUS_REG failed\n");
668 spin_unlock_irq(&adapter->driver_lock);
669 continue;
670 }
671 adapter->hisregcpy |= ireg;
672 }
673
9012b28a 674 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p "
876c9d3a
MT		 675 "dnld_sent=%d\n",
676 adapter->intcounter,
677 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
678
679 /* command response? */
680 if (adapter->hisregcpy & his_cmdupldrdy) {
9012b28a 681 lbs_deb_thread("main-thread: cmd response ready\n");
876c9d3a
MT		 682
683 adapter->hisregcpy &= ~his_cmdupldrdy;
684 spin_unlock_irq(&adapter->driver_lock);
685 libertas_process_rx_command(priv);
686 spin_lock_irq(&adapter->driver_lock);
687 }
688
689 /* Any Card Event */
690 if (adapter->hisregcpy & his_cardevent) {
9012b28a 691 lbs_deb_thread("main-thread: Card Event Activity\n");
876c9d3a
MT		 692
693 adapter->hisregcpy &= ~his_cardevent;
694
208fdd2f 695 if (priv->hw_read_event_cause(priv)) {
876c9d3a 696 lbs_pr_alert(
208fdd2f 697 "main-thread: hw_read_event_cause failed\n");
876c9d3a
MT		 698 spin_unlock_irq(&adapter->driver_lock);
699 continue;
700 }
701 spin_unlock_irq(&adapter->driver_lock);
702 libertas_process_event(priv);
703 } else
704 spin_unlock_irq(&adapter->driver_lock);
705
706 /* Check if we need to confirm Sleep Request received previously */
707 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
708 if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
709 if (adapter->connect_status ==
710 libertas_connected) {
9012b28a 711 lbs_deb_thread(
876c9d3a
MT		 712 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
713 "dnld_sent=%d cur_cmd=%p, confirm now\n",
714 adapter->intcounter,
715 adapter->currenttxskb,
716 priv->wlan_dev.dnld_sent,
717 adapter->cur_cmd);
718
719 libertas_ps_confirm_sleep(priv,
720 (u16) adapter->psmode);
721 } else {
722 /* workaround for firmware sending
723 * deauth/linkloss event immediately
724 * after sleep request, remove this
725 * after firmware fixes it
726 */
727 adapter->psstate = PS_STATE_AWAKE;
728 lbs_pr_alert(
729 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
730 }
731 }
732 }
733
734 /* The PS state is changed during processing of Sleep Request
735 * event above
736 */
737 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
738 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
739 continue;
740
741 /* Execute the next command */
742 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
743 libertas_execute_next_command(priv);
744
745 /* Wake-up command waiters which can't sleep in
746 * libertas_prepare_and_send_command
747 */
748 if (!adapter->nr_cmd_pending)
749 wake_up_all(&adapter->cmd_pending);
750
751 libertas_tx_runqueue(priv);
752 }
753
754 del_timer(&adapter->command_timer);
755 adapter->nr_cmd_pending = 0;
756 wake_up_all(&adapter->cmd_pending);
757 wlan_deactivate_thread(thread);
758
9012b28a 759 lbs_deb_leave(LBS_DEB_THREAD);
876c9d3a
MT		 760 return 0;
761}
762
763/**
764 * @brief This function adds the card. it will probe the
765 * card, allocate the wlan_priv and initialize the device.
766 *
767 * @param card A pointer to card
768 * @return A pointer to wlan_private structure
769 */
770wlan_private *wlan_add_card(void *card)
771{
772 struct net_device *dev = NULL;
876c9d3a
MT		 773 wlan_private *priv = NULL;
774
9012b28a 775 lbs_deb_enter(LBS_DEB_NET);
876c9d3a
MT		 776
777 /* Allocate an Ethernet device and register it */
778 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
9012b28a 779 lbs_pr_err("init ethX device failed\n");
876c9d3a
MT		 780 return NULL;
781 }
876c9d3a
MT		 782 priv = dev->priv;
783
784 /* allocate buffer for wlan_adapter */
fb3dddf2 785 if (!(priv->adapter = kzalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
9012b28a 786 lbs_pr_err("allocate buffer for wlan_adapter failed\n");
fb3dddf2 787 goto err_kzalloc;
876c9d3a
MT		 788 }
789
876c9d3a
MT		 790 priv->wlan_dev.netdev = dev;
791 priv->wlan_dev.card = card;
792 priv->mesh_open = 0;
793 priv->infra_open = 0;
876c9d3a
MT		 794
795 SET_MODULE_OWNER(dev);
876c9d3a
MT		 796
797 /* Setup the OS Interface to our functions */
798 dev->open = wlan_open;
799 dev->hard_start_xmit = wlan_pre_start_xmit;
800 dev->stop = wlan_close;
801 dev->do_ioctl = libertas_do_ioctl;
802 dev->set_mac_address = wlan_set_mac_address;
876c9d3a
MT		 803 dev->tx_timeout = wlan_tx_timeout;
804 dev->get_stats = wlan_get_stats;
fb3dddf2 805 dev->watchdog_timeo = 5 * HZ;
876c9d3a 806 dev->ethtool_ops = &libertas_ethtool_ops;
876c9d3a
MT		 807#ifdef WIRELESS_EXT
808 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
876c9d3a
MT		 809#endif
810#define NETIF_F_DYNALLOC 16
811 dev->features |= NETIF_F_DYNALLOC;
812 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
813 dev->set_multicast_list = wlan_set_multicast_list;
814
815 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
816 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
817
818 spin_lock_init(&priv->adapter->driver_lock);
819 init_waitqueue_head(&priv->adapter->cmd_pending);
820 priv->adapter->nr_cmd_pending = 0;
32a74b7c
HS		 821 goto done;
822
823err_kzalloc:
824 free_netdev(dev);
6a812157 825 priv = NULL;
32a74b7c
HS		 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 */
208fdd2f 852 if (priv->hw_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 875err_init_fw:
208fdd2f 876 priv->hw_unregister_dev(priv);
876c9d3a
MT		 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
208fdd2f 1158 if (if_usb_register()) {
876c9d3a
MT		 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
208fdd2f 1171 if_usb_unregister();
876c9d3a
MT		 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
This page took 0.106042 seconds and 5 git commands to generate.