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[PATCH] libertas: exclude non-used code when PROC_DEBUG is not set
[linux-2.6-block.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
7#include <linux/delay.h>
8#include <linux/freezer.h>
9#include <linux/etherdevice.h>
10#include <linux/netdevice.h>
11#include <linux/if_arp.h>
12
13#include <net/iw_handler.h>
14
15#include "host.h"
16#include "sbi.h"
17#include "decl.h"
18#include "dev.h"
19#include "fw.h"
20#include "wext.h"
21#include "debugfs.h"
22#include "assoc.h"
23
3ce40232
DW		 24#define DRIVER_RELEASE_VERSION "320.p0"
25const char libertas_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
26#ifdef DEBUG
27 "-dbg"
28#endif
29 "";
30
876c9d3a
MT		 31#define WLAN_TX_PWR_DEFAULT 20 /*100mW */
32#define WLAN_TX_PWR_US_DEFAULT 20 /*100mW */
33#define WLAN_TX_PWR_JP_DEFAULT 16 /*50mW */
34#define WLAN_TX_PWR_FR_DEFAULT 20 /*100mW */
35#define WLAN_TX_PWR_EMEA_DEFAULT 20 /*100mW */
36
37/* Format { channel, frequency (MHz), maxtxpower } */
38/* band: 'B/G', region: USA FCC/Canada IC */
39static struct chan_freq_power channel_freq_power_US_BG[] = {
40 {1, 2412, WLAN_TX_PWR_US_DEFAULT},
41 {2, 2417, WLAN_TX_PWR_US_DEFAULT},
42 {3, 2422, WLAN_TX_PWR_US_DEFAULT},
43 {4, 2427, WLAN_TX_PWR_US_DEFAULT},
44 {5, 2432, WLAN_TX_PWR_US_DEFAULT},
45 {6, 2437, WLAN_TX_PWR_US_DEFAULT},
46 {7, 2442, WLAN_TX_PWR_US_DEFAULT},
47 {8, 2447, WLAN_TX_PWR_US_DEFAULT},
48 {9, 2452, WLAN_TX_PWR_US_DEFAULT},
49 {10, 2457, WLAN_TX_PWR_US_DEFAULT},
50 {11, 2462, WLAN_TX_PWR_US_DEFAULT}
51};
52
53/* band: 'B/G', region: Europe ETSI */
54static struct chan_freq_power channel_freq_power_EU_BG[] = {
55 {1, 2412, WLAN_TX_PWR_EMEA_DEFAULT},
56 {2, 2417, WLAN_TX_PWR_EMEA_DEFAULT},
57 {3, 2422, WLAN_TX_PWR_EMEA_DEFAULT},
58 {4, 2427, WLAN_TX_PWR_EMEA_DEFAULT},
59 {5, 2432, WLAN_TX_PWR_EMEA_DEFAULT},
60 {6, 2437, WLAN_TX_PWR_EMEA_DEFAULT},
61 {7, 2442, WLAN_TX_PWR_EMEA_DEFAULT},
62 {8, 2447, WLAN_TX_PWR_EMEA_DEFAULT},
63 {9, 2452, WLAN_TX_PWR_EMEA_DEFAULT},
64 {10, 2457, WLAN_TX_PWR_EMEA_DEFAULT},
65 {11, 2462, WLAN_TX_PWR_EMEA_DEFAULT},
66 {12, 2467, WLAN_TX_PWR_EMEA_DEFAULT},
67 {13, 2472, WLAN_TX_PWR_EMEA_DEFAULT}
68};
69
70/* band: 'B/G', region: Spain */
71static struct chan_freq_power channel_freq_power_SPN_BG[] = {
72 {10, 2457, WLAN_TX_PWR_DEFAULT},
73 {11, 2462, WLAN_TX_PWR_DEFAULT}
74};
75
76/* band: 'B/G', region: France */
77static struct chan_freq_power channel_freq_power_FR_BG[] = {
78 {10, 2457, WLAN_TX_PWR_FR_DEFAULT},
79 {11, 2462, WLAN_TX_PWR_FR_DEFAULT},
80 {12, 2467, WLAN_TX_PWR_FR_DEFAULT},
81 {13, 2472, WLAN_TX_PWR_FR_DEFAULT}
82};
83
84/* band: 'B/G', region: Japan */
85static struct chan_freq_power channel_freq_power_JPN_BG[] = {
86 {1, 2412, WLAN_TX_PWR_JP_DEFAULT},
87 {2, 2417, WLAN_TX_PWR_JP_DEFAULT},
88 {3, 2422, WLAN_TX_PWR_JP_DEFAULT},
89 {4, 2427, WLAN_TX_PWR_JP_DEFAULT},
90 {5, 2432, WLAN_TX_PWR_JP_DEFAULT},
91 {6, 2437, WLAN_TX_PWR_JP_DEFAULT},
92 {7, 2442, WLAN_TX_PWR_JP_DEFAULT},
93 {8, 2447, WLAN_TX_PWR_JP_DEFAULT},
94 {9, 2452, WLAN_TX_PWR_JP_DEFAULT},
95 {10, 2457, WLAN_TX_PWR_JP_DEFAULT},
96 {11, 2462, WLAN_TX_PWR_JP_DEFAULT},
97 {12, 2467, WLAN_TX_PWR_JP_DEFAULT},
98 {13, 2472, WLAN_TX_PWR_JP_DEFAULT},
99 {14, 2484, WLAN_TX_PWR_JP_DEFAULT}
100};
101
102/**
103 * the structure for channel, frequency and power
104 */
105struct region_cfp_table {
106 u8 region;
107 struct chan_freq_power *cfp_BG;
108 int cfp_no_BG;
109};
110
111/**
112 * the structure for the mapping between region and CFP
113 */
114static struct region_cfp_table region_cfp_table[] = {
115 {0x10, /*US FCC */
116 channel_freq_power_US_BG,
117 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
118 }
119 ,
120 {0x20, /*CANADA IC */
121 channel_freq_power_US_BG,
122 sizeof(channel_freq_power_US_BG) / sizeof(struct chan_freq_power),
123 }
124 ,
125 {0x30, /*EU*/ channel_freq_power_EU_BG,
126 sizeof(channel_freq_power_EU_BG) / sizeof(struct chan_freq_power),
127 }
128 ,
129 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
130 sizeof(channel_freq_power_SPN_BG) / sizeof(struct chan_freq_power),
131 }
132 ,
133 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
134 sizeof(channel_freq_power_FR_BG) / sizeof(struct chan_freq_power),
135 }
136 ,
137 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
138 sizeof(channel_freq_power_JPN_BG) / sizeof(struct chan_freq_power),
139 }
140 ,
141/*Add new region here */
142};
143
876c9d3a
MT		 144/**
145 * the rates supported
146 */
147u8 libertas_supported_rates[G_SUPPORTED_RATES] =
148 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1490 };
150
151/**
152 * the rates supported for ad-hoc G mode
153 */
154u8 libertas_adhoc_rates_g[G_SUPPORTED_RATES] =
155 { 0x82, 0x84, 0x8b, 0x96, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
1560 };
157
158/**
159 * the rates supported for ad-hoc B mode
160 */
161u8 libertas_adhoc_rates_b[4] = { 0x82, 0x84, 0x8b, 0x96 };
162
876c9d3a
MT		 163#define MAX_DEVS 5
164static struct net_device *libertas_devs[MAX_DEVS];
165static int libertas_found = 0;
166
167/**
168 * the table to keep region code
169 */
170u16 libertas_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
171 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
172
173static u8 *default_fw_name = "usb8388.bin";
174
175/**
176 * Attributes exported through sysfs
177 */
876c9d3a
MT		 178
179/**
180 * @brief Get function for sysfs attribute libertas_mpp
181 */
b3f1b8cf
JL		 182static ssize_t libertas_mpp_get(struct device * dev,
183 struct device_attribute *attr, char * buf) {
876c9d3a
MT		 184 struct cmd_ds_mesh_access mesh_access;
185
186 memset(&mesh_access, 0, sizeof(mesh_access));
187 libertas_prepare_and_send_command(to_net_dev(dev)->priv,
188 cmd_mesh_access,
189 cmd_act_mesh_get_mpp,
190 cmd_option_waitforrsp, 0, (void *)&mesh_access);
191
192 return snprintf(buf, 3, "%d\n", mesh_access.data[0]);
193}
194
195/**
196 * @brief Set function for sysfs attribute libertas_mpp
197 */
b3f1b8cf
JL		 198static ssize_t libertas_mpp_set(struct device * dev,
199 struct device_attribute *attr, const char * buf, size_t count) {
876c9d3a
MT		 200 struct cmd_ds_mesh_access mesh_access;
201
202
203 memset(&mesh_access, 0, sizeof(mesh_access));
204 sscanf(buf, "%d", &(mesh_access.data[0]));
205 libertas_prepare_and_send_command((to_net_dev(dev))->priv,
206 cmd_mesh_access,
207 cmd_act_mesh_set_mpp,
208 cmd_option_waitforrsp, 0, (void *)&mesh_access);
209 return strlen(buf);
210}
211
212/**
213 * libertas_mpp attribute to be exported per mshX interface
214 * through sysfs (/sys/class/net/mshX/libertas-mpp)
215 */
b3f1b8cf 216static DEVICE_ATTR(libertas_mpp, 0644, libertas_mpp_get,
876c9d3a
MT		 217 libertas_mpp_set );
218
219/**
220 * @brief Check if the device can be open and wait if necessary.
221 *
222 * @param dev A pointer to net_device structure
223 * @return 0
224 *
225 * For USB adapter, on some systems the device open handler will be
226 * called before FW ready. Use the following flag check and wait
227 * function to work around the issue.
228 *
229 */
230static int pre_open_check(struct net_device *dev) {
231 wlan_private *priv = (wlan_private *) dev->priv;
232 wlan_adapter *adapter = priv->adapter;
233 int i = 0;
234
235 while (!adapter->fw_ready && i < 20) {
236 i++;
237 msleep_interruptible(100);
238 }
239 if (!adapter->fw_ready) {
240 lbs_pr_info("FW not ready, pre_open_check() return failure\n");
241 LEAVE();
242 return -1;
243 }
244
245 return 0;
246}
247
248/**
249 * @brief This function opens the device
250 *
251 * @param dev A pointer to net_device structure
252 * @return 0
253 */
254static int wlan_dev_open(struct net_device *dev)
255{
256 wlan_private *priv = (wlan_private *) dev->priv;
257 wlan_adapter *adapter = priv->adapter;
258
259 ENTER();
260
261
262 priv->open = 1;
263
264 if (adapter->connect_status == libertas_connected) {
265 netif_carrier_on(priv->wlan_dev.netdev);
266 } else
267 netif_carrier_off(priv->wlan_dev.netdev);
268
269 LEAVE();
270 return 0;
271}
272/**
273 * @brief This function opens the mshX interface
274 *
275 * @param dev A pointer to net_device structure
276 * @return 0
277 */
278static int mesh_open(struct net_device *dev)
279{
280 wlan_private *priv = (wlan_private *) dev->priv ;
281
282 if(pre_open_check(dev) == -1)
283 return -1;
284 priv->mesh_open = 1 ;
285 netif_start_queue(priv->mesh_dev);
286 if (priv->infra_open == 0)
287 return wlan_dev_open(priv->wlan_dev.netdev) ;
288 return 0;
289}
290
291/**
292 * @brief This function opens the ethX interface
293 *
294 * @param dev A pointer to net_device structure
295 * @return 0
296 */
297static int wlan_open(struct net_device *dev)
298{
299 wlan_private *priv = (wlan_private *) dev->priv ;
300
301 if(pre_open_check(dev) == -1)
302 return -1;
303 priv->infra_open = 1 ;
304 netif_wake_queue(priv->wlan_dev.netdev);
305 if (priv->open == 0)
306 return wlan_dev_open(priv->wlan_dev.netdev) ;
307 return 0;
308}
309
310static int wlan_dev_close(struct net_device *dev)
311{
312 wlan_private *priv = dev->priv;
313
314 ENTER();
315
316 netif_carrier_off(priv->wlan_dev.netdev);
317 priv->open = 0;
318
319 LEAVE();
320 return 0;
321}
322
323/**
324 * @brief This function closes the mshX interface
325 *
326 * @param dev A pointer to net_device structure
327 * @return 0
328 */
329static int mesh_close(struct net_device *dev)
330{
331 wlan_private *priv = (wlan_private *) (dev->priv);
332
333 priv->mesh_open = 0;
334 netif_stop_queue(priv->mesh_dev);
335 if (priv->infra_open == 0)
336 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
337 else
338 return 0;
339}
340
341/**
342 * @brief This function closes the ethX interface
343 *
344 * @param dev A pointer to net_device structure
345 * @return 0
346 */
347static int wlan_close(struct net_device *dev) {
348 wlan_private *priv = (wlan_private *) dev->priv;
349
350 netif_stop_queue(priv->wlan_dev.netdev);
351 priv->infra_open = 0;
352 if (priv->mesh_open == 0)
353 return wlan_dev_close( ((wlan_private *) dev->priv)->wlan_dev.netdev) ;
354 else
355 return 0;
356}
357
358
876c9d3a
MT		 359static int wlan_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
360{
361 int ret = 0;
362 wlan_private *priv = dev->priv;
363
364 ENTER();
365
366 if (priv->wlan_dev.dnld_sent || priv->adapter->TxLockFlag) {
367 priv->stats.tx_dropped++;
368 goto done;
369 }
370
371 netif_stop_queue(priv->wlan_dev.netdev);
372
373 if (libertas_process_tx(priv, skb) == 0)
374 dev->trans_start = jiffies;
375done:
376 LEAVE();
377 return ret;
378}
379
380/**
381 * @brief Mark mesh packets and handover them to wlan_hard_start_xmit
382 *
383 */
384static int mesh_pre_start_xmit(struct sk_buff *skb, struct net_device *dev)
385{
386 wlan_private *priv = dev->priv;
387 ENTER();
388 SET_MESH_FRAME(skb);
389 LEAVE();
390
391 return wlan_hard_start_xmit(skb, priv->wlan_dev.netdev);
392}
393
394/**
395 * @brief Mark non-mesh packets and handover them to wlan_hard_start_xmit
396 *
397 */
398static int wlan_pre_start_xmit(struct sk_buff *skb, struct net_device *dev) {
399 ENTER();
400 UNSET_MESH_FRAME(skb);
401 LEAVE();
402 return wlan_hard_start_xmit(skb, dev);
403}
404
405static void wlan_tx_timeout(struct net_device *dev)
406{
407 wlan_private *priv = (wlan_private *) dev->priv;
408
409 ENTER();
410
411 lbs_pr_err("tx watch dog timeout!\n");
412
413 priv->wlan_dev.dnld_sent = DNLD_RES_RECEIVED;
414 dev->trans_start = jiffies;
415
416 if (priv->adapter->currenttxskb) {
417 if (priv->adapter->radiomode == WLAN_RADIOMODE_RADIOTAP) {
418 /* If we are here, we have not received feedback from
419 the previous packet. Assume TX_FAIL and move on. */
420 priv->adapter->eventcause = 0x01000000;
421 libertas_send_tx_feedback(priv);
422 } else
423 wake_up_interruptible(&priv->mainthread.waitq);
424 } else if (priv->adapter->connect_status == libertas_connected)
425 netif_wake_queue(priv->wlan_dev.netdev);
426
427 LEAVE();
428}
429
430/**
431 * @brief This function returns the network statistics
432 *
433 * @param dev A pointer to wlan_private structure
434 * @return A pointer to net_device_stats structure
435 */
436static struct net_device_stats *wlan_get_stats(struct net_device *dev)
437{
438 wlan_private *priv = (wlan_private *) dev->priv;
439
440 return &priv->stats;
441}
442
443static int wlan_set_mac_address(struct net_device *dev, void *addr)
444{
445 int ret = 0;
446 wlan_private *priv = (wlan_private *) dev->priv;
447 wlan_adapter *adapter = priv->adapter;
448 struct sockaddr *phwaddr = addr;
449
450 ENTER();
451
452 memset(adapter->current_addr, 0, ETH_ALEN);
453
454 /* dev->dev_addr is 8 bytes */
455 lbs_dbg_hex("dev->dev_addr:", dev->dev_addr, ETH_ALEN);
456
457 lbs_dbg_hex("addr:", phwaddr->sa_data, ETH_ALEN);
458 memcpy(adapter->current_addr, phwaddr->sa_data, ETH_ALEN);
459
460 ret = libertas_prepare_and_send_command(priv, cmd_802_11_mac_address,
461 cmd_act_set,
462 cmd_option_waitforrsp, 0, NULL);
463
464 if (ret) {
465 lbs_pr_debug(1, "set mac address failed.\n");
466 ret = -1;
467 goto done;
468 }
469
470 lbs_dbg_hex("adapter->macaddr:", adapter->current_addr, ETH_ALEN);
471 memcpy(dev->dev_addr, adapter->current_addr, ETH_ALEN);
472 memcpy(((wlan_private *) dev->priv)->mesh_dev->dev_addr, adapter->current_addr, ETH_ALEN);
473
474done:
475 LEAVE();
476 return ret;
477}
478
479static int wlan_copy_multicast_address(wlan_adapter * adapter,
480 struct net_device *dev)
481{
482 int i = 0;
483 struct dev_mc_list *mcptr = dev->mc_list;
484
485 for (i = 0; i < dev->mc_count; i++) {
486 memcpy(&adapter->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
487 mcptr = mcptr->next;
488 }
489
490 return i;
491
492}
493
494static void wlan_set_multicast_list(struct net_device *dev)
495{
496 wlan_private *priv = dev->priv;
497 wlan_adapter *adapter = priv->adapter;
498 int oldpacketfilter;
499
500 ENTER();
501
502 oldpacketfilter = adapter->currentpacketfilter;
503
504 if (dev->flags & IFF_PROMISC) {
505 lbs_pr_debug(1, "enable Promiscuous mode\n");
506 adapter->currentpacketfilter |=
507 cmd_act_mac_promiscuous_enable;
508 adapter->currentpacketfilter &=
509 ~(cmd_act_mac_all_multicast_enable |
510 cmd_act_mac_multicast_enable);
511 } else {
512 /* Multicast */
513 adapter->currentpacketfilter &=
514 ~cmd_act_mac_promiscuous_enable;
515
516 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
517 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
518 lbs_pr_debug(1, "Enabling All Multicast!\n");
519 adapter->currentpacketfilter |=
520 cmd_act_mac_all_multicast_enable;
521 adapter->currentpacketfilter &=
522 ~cmd_act_mac_multicast_enable;
523 } else {
524 adapter->currentpacketfilter &=
525 ~cmd_act_mac_all_multicast_enable;
526
527 if (!dev->mc_count) {
528 lbs_pr_debug(1, "No multicast addresses - "
529 "disabling multicast!\n");
530 adapter->currentpacketfilter &=
531 ~cmd_act_mac_multicast_enable;
532 } else {
533 int i;
534
535 adapter->currentpacketfilter |=
536 cmd_act_mac_multicast_enable;
537
538 adapter->nr_of_multicastmacaddr =
539 wlan_copy_multicast_address(adapter, dev);
540
541 lbs_pr_debug(1, "Multicast addresses: %d\n",
542 dev->mc_count);
543
544 for (i = 0; i < dev->mc_count; i++) {
545 lbs_pr_debug(1, "Multicast address %d:"
546 "%x %x %x %x %x %x\n", i,
547 adapter->multicastlist[i][0],
548 adapter->multicastlist[i][1],
549 adapter->multicastlist[i][2],
550 adapter->multicastlist[i][3],
551 adapter->multicastlist[i][4],
552 adapter->multicastlist[i][5]);
553 }
554 /* set multicast addresses to firmware */
555 libertas_prepare_and_send_command(priv,
556 cmd_mac_multicast_adr,
557 cmd_act_set, 0, 0,
558 NULL);
559 }
560 }
561 }
562
563 if (adapter->currentpacketfilter != oldpacketfilter) {
564 libertas_set_mac_packet_filter(priv);
565 }
566
567 LEAVE();
568}
569
570/**
571 * @brief This function hanldes the major job in WLAN driver.
572 * it handles the event generated by firmware, rx data received
573 * from firmware and tx data sent from kernel.
574 *
575 * @param data A pointer to wlan_thread structure
576 * @return 0
577 */
578static int wlan_service_main_thread(void *data)
579{
580 struct wlan_thread *thread = data;
581 wlan_private *priv = thread->priv;
582 wlan_adapter *adapter = priv->adapter;
583 wait_queue_t wait;
584 u8 ireg = 0;
585
586 ENTER();
587
588 wlan_activate_thread(thread);
589
590 init_waitqueue_entry(&wait, current);
591
592 for (;;) {
593 lbs_pr_debug(1, "main-thread 111: intcounter=%d "
594 "currenttxskb=%p dnld_sent=%d\n",
595 adapter->intcounter,
596 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
597
598 add_wait_queue(&thread->waitq, &wait);
599 set_current_state(TASK_INTERRUPTIBLE);
600 spin_lock_irq(&adapter->driver_lock);
601 if ((adapter->psstate == PS_STATE_SLEEP) ||
602 (!adapter->intcounter
603 && (priv->wlan_dev.dnld_sent || adapter->cur_cmd ||
604 list_empty(&adapter->cmdpendingq)))) {
605 lbs_pr_debug(1,
606 "main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
607 adapter->connect_status, adapter->intcounter,
608 adapter->psmode, adapter->psstate);
609 spin_unlock_irq(&adapter->driver_lock);
610 schedule();
611 } else
612 spin_unlock_irq(&adapter->driver_lock);
613
614
615 lbs_pr_debug(1,
616 "main-thread 222 (waking up): intcounter=%d currenttxskb=%p "
617 "dnld_sent=%d\n", adapter->intcounter,
618 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
619
620 set_current_state(TASK_RUNNING);
621 remove_wait_queue(&thread->waitq, &wait);
622 try_to_freeze();
623
624 lbs_pr_debug(1, "main-thread 333: intcounter=%d currenttxskb=%p "
625 "dnld_sent=%d\n",
626 adapter->intcounter,
627 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
628
629 if (kthread_should_stop()
630 || adapter->surpriseremoved) {
631 lbs_pr_debug(1,
632 "main-thread: break from main thread: surpriseremoved=0x%x\n",
633 adapter->surpriseremoved);
634 break;
635 }
636
637
638 spin_lock_irq(&adapter->driver_lock);
639 if (adapter->intcounter) {
640 u8 int_status;
641 adapter->intcounter = 0;
642 int_status = libertas_sbi_get_int_status(priv, &ireg);
643
644 if (int_status) {
645 lbs_pr_debug(1,
646 "main-thread: reading HOST_INT_STATUS_REG failed\n");
647 spin_unlock_irq(&adapter->driver_lock);
648 continue;
649 }
650 adapter->hisregcpy |= ireg;
651 }
652
653 lbs_pr_debug(1, "main-thread 444: intcounter=%d currenttxskb=%p "
654 "dnld_sent=%d\n",
655 adapter->intcounter,
656 adapter->currenttxskb, priv->wlan_dev.dnld_sent);
657
658 /* command response? */
659 if (adapter->hisregcpy & his_cmdupldrdy) {
660 lbs_pr_debug(1, "main-thread: cmd response ready.\n");
661
662 adapter->hisregcpy &= ~his_cmdupldrdy;
663 spin_unlock_irq(&adapter->driver_lock);
664 libertas_process_rx_command(priv);
665 spin_lock_irq(&adapter->driver_lock);
666 }
667
668 /* Any Card Event */
669 if (adapter->hisregcpy & his_cardevent) {
670 lbs_pr_debug(1, "main-thread: Card Event Activity.\n");
671
672 adapter->hisregcpy &= ~his_cardevent;
673
674 if (libertas_sbi_read_event_cause(priv)) {
675 lbs_pr_alert(
676 "main-thread: libertas_sbi_read_event_cause failed.\n");
677 spin_unlock_irq(&adapter->driver_lock);
678 continue;
679 }
680 spin_unlock_irq(&adapter->driver_lock);
681 libertas_process_event(priv);
682 } else
683 spin_unlock_irq(&adapter->driver_lock);
684
685 /* Check if we need to confirm Sleep Request received previously */
686 if (adapter->psstate == PS_STATE_PRE_SLEEP) {
687 if (!priv->wlan_dev.dnld_sent && !adapter->cur_cmd) {
688 if (adapter->connect_status ==
689 libertas_connected) {
690 lbs_pr_debug(1,
691 "main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p "
692 "dnld_sent=%d cur_cmd=%p, confirm now\n",
693 adapter->intcounter,
694 adapter->currenttxskb,
695 priv->wlan_dev.dnld_sent,
696 adapter->cur_cmd);
697
698 libertas_ps_confirm_sleep(priv,
699 (u16) adapter->psmode);
700 } else {
701 /* workaround for firmware sending
702 * deauth/linkloss event immediately
703 * after sleep request, remove this
704 * after firmware fixes it
705 */
706 adapter->psstate = PS_STATE_AWAKE;
707 lbs_pr_alert(
708 "main-thread: ignore PS_SleepConfirm in non-connected state\n");
709 }
710 }
711 }
712
713 /* The PS state is changed during processing of Sleep Request
714 * event above
715 */
716 if ((priv->adapter->psstate == PS_STATE_SLEEP) ||
717 (priv->adapter->psstate == PS_STATE_PRE_SLEEP))
718 continue;
719
720 /* Execute the next command */
721 if (!priv->wlan_dev.dnld_sent && !priv->adapter->cur_cmd)
722 libertas_execute_next_command(priv);
723
724 /* Wake-up command waiters which can't sleep in
725 * libertas_prepare_and_send_command
726 */
727 if (!adapter->nr_cmd_pending)
728 wake_up_all(&adapter->cmd_pending);
729
730 libertas_tx_runqueue(priv);
731 }
732
733 del_timer(&adapter->command_timer);
734 adapter->nr_cmd_pending = 0;
735 wake_up_all(&adapter->cmd_pending);
736 wlan_deactivate_thread(thread);
737
738 LEAVE();
739 return 0;
740}
741
742/**
743 * @brief This function adds the card. it will probe the
744 * card, allocate the wlan_priv and initialize the device.
745 *
746 * @param card A pointer to card
747 * @return A pointer to wlan_private structure
748 */
749wlan_private *wlan_add_card(void *card)
750{
751 struct net_device *dev = NULL;
752 struct net_device *mesh_dev = NULL;
753 wlan_private *priv = NULL;
754
755 ENTER();
756
757 /* Allocate an Ethernet device and register it */
758 if (!(dev = alloc_etherdev(sizeof(wlan_private)))) {
759 lbs_pr_alert( "Init ethernet device failed!\n");
760 return NULL;
761 }
762
763 priv = dev->priv;
764
765 /* allocate buffer for wlan_adapter */
766 if (!(priv->adapter = kmalloc(sizeof(wlan_adapter), GFP_KERNEL))) {
767 lbs_pr_alert( "Allocate buffer for wlan_adapter failed!\n");
768 goto err_kmalloc;
769 }
770
771 /* Allocate a virtual mesh device */
772 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
773 lbs_pr_debug(1, "Init ethernet device failed!\n");
774 return NULL;
775 }
776
777 /* Both intervaces share the priv structure */
778 mesh_dev->priv = priv;
779
780 /* init wlan_adapter */
781 memset(priv->adapter, 0, sizeof(wlan_adapter));
782
783 priv->wlan_dev.netdev = dev;
784 priv->wlan_dev.card = card;
785 priv->mesh_open = 0;
786 priv->infra_open = 0;
787 priv->mesh_dev = mesh_dev;
876c9d3a
MT		 788
789 SET_MODULE_OWNER(dev);
790 SET_MODULE_OWNER(mesh_dev);
791
792 /* Setup the OS Interface to our functions */
793 dev->open = wlan_open;
794 dev->hard_start_xmit = wlan_pre_start_xmit;
795 dev->stop = wlan_close;
796 dev->do_ioctl = libertas_do_ioctl;
797 dev->set_mac_address = wlan_set_mac_address;
798 mesh_dev->open = mesh_open;
799 mesh_dev->hard_start_xmit = mesh_pre_start_xmit;
800 mesh_dev->stop = mesh_close;
801 mesh_dev->do_ioctl = libertas_do_ioctl;
5c20676f
MT		 802 memcpy(mesh_dev->dev_addr, priv->wlan_dev.netdev->dev_addr,
803 sizeof(priv->wlan_dev.netdev->dev_addr));
876c9d3a
MT		 804
805#define WLAN_WATCHDOG_TIMEOUT (5 * HZ)
806
807 dev->tx_timeout = wlan_tx_timeout;
808 dev->get_stats = wlan_get_stats;
809 dev->watchdog_timeo = WLAN_WATCHDOG_TIMEOUT;
810 dev->ethtool_ops = &libertas_ethtool_ops;
811 mesh_dev->get_stats = wlan_get_stats;
812 mesh_dev->ethtool_ops = &libertas_ethtool_ops;
813
814#ifdef WIRELESS_EXT
815 dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
816 mesh_dev->wireless_handlers = (struct iw_handler_def *)&libertas_handler_def;
817#endif
818#define NETIF_F_DYNALLOC 16
819 dev->features |= NETIF_F_DYNALLOC;
820 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
821 dev->set_multicast_list = wlan_set_multicast_list;
822
823 INIT_LIST_HEAD(&priv->adapter->cmdfreeq);
824 INIT_LIST_HEAD(&priv->adapter->cmdpendingq);
825
826 spin_lock_init(&priv->adapter->driver_lock);
827 init_waitqueue_head(&priv->adapter->cmd_pending);
828 priv->adapter->nr_cmd_pending = 0;
829
830 lbs_pr_debug(1, "Starting kthread...\n");
831 priv->mainthread.priv = priv;
832 wlan_create_thread(wlan_service_main_thread,
833 &priv->mainthread, "wlan_main_service");
834
835 priv->assoc_thread =
836 create_singlethread_workqueue("libertas_assoc");
eb3ce631 837 INIT_DELAYED_WORK(&priv->assoc_work, libertas_association_worker);
876c9d3a
MT		 838
839 /*
840 * Register the device. Fillup the private data structure with
841 * relevant information from the card and request for the required
842 * IRQ.
843 */
844 if (libertas_sbi_register_dev(priv) < 0) {
845 lbs_pr_info("failed to register wlan device!\n");
846 goto err_registerdev;
847 }
848
849 /* init FW and HW */
850 if (libertas_init_fw(priv)) {
851 lbs_pr_debug(1, "Firmware Init failed\n");
852 goto err_registerdev;
853 }
854
855 if (register_netdev(dev)) {
856 lbs_pr_err("Cannot register network device!\n");
857 goto err_init_fw;
858 }
859
860 /* Register virtual mesh interface */
861 if (register_netdev(mesh_dev)) {
862 lbs_pr_info("Cannot register mesh virtual interface!\n");
863 goto err_init_fw;
864 }
865
604ba491 866 lbs_pr_info("%s: Marvell Wlan 802.11 adapter\n", dev->name);
876c9d3a
MT		 867
868 libertas_debugfs_init_one(priv, dev);
869
870 if (libertas_found == MAX_DEVS)
871 goto err_init_fw;
872 libertas_devs[libertas_found] = dev;
873 libertas_found++;
b3f1b8cf 874 if (device_create_file(&(mesh_dev->dev), &dev_attr_libertas_mpp))
876c9d3a
MT		 875 goto err_create_file;
876
877 LEAVE();
878 return priv;
879
880err_create_file:
b3f1b8cf 881 device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
876c9d3a
MT		 882err_init_fw:
883 libertas_sbi_unregister_dev(priv);
884err_registerdev:
885 destroy_workqueue(priv->assoc_thread);
886 /* Stop the thread servicing the interrupts */
887 wake_up_interruptible(&priv->mainthread.waitq);
888 wlan_terminate_thread(&priv->mainthread);
889 kfree(priv->adapter);
890err_kmalloc:
891 free_netdev(dev);
892 free_netdev(mesh_dev);
876c9d3a
MT		 893
894 LEAVE();
895 return NULL;
896}
897
898static void wake_pending_cmdnodes(wlan_private *priv)
899{
900 struct cmd_ctrl_node *cmdnode;
901 unsigned long flags;
902
903 spin_lock_irqsave(&priv->adapter->driver_lock, flags);
904 list_for_each_entry(cmdnode, &priv->adapter->cmdpendingq, list) {
905 cmdnode->cmdwaitqwoken = 1;
906 wake_up_interruptible(&cmdnode->cmdwait_q);
907 }
908 spin_unlock_irqrestore(&priv->adapter->driver_lock, flags);
909}
910
911
912int wlan_remove_card(void *card)
913{
914 wlan_private *priv = libertas_sbi_get_priv(card);
915 wlan_adapter *adapter;
916 struct net_device *dev;
917 struct net_device *mesh_dev;
918 union iwreq_data wrqu;
919 int i;
920
921 ENTER();
922
923 if (!priv) {
924 LEAVE();
925 return 0;
926 }
927
928 adapter = priv->adapter;
929
930 if (!adapter) {
931 LEAVE();
932 return 0;
933 }
934
935 dev = priv->wlan_dev.netdev;
936 mesh_dev = priv->mesh_dev;
937
938 netif_stop_queue(mesh_dev);
939 netif_stop_queue(priv->wlan_dev.netdev);
940 netif_carrier_off(priv->wlan_dev.netdev);
941
942 wake_pending_cmdnodes(priv);
943
b3f1b8cf 944 device_remove_file(&(mesh_dev->dev), &dev_attr_libertas_mpp);
876c9d3a
MT		 945 unregister_netdev(mesh_dev);
946 unregister_netdev(dev);
947
948 cancel_delayed_work(&priv->assoc_work);
949 destroy_workqueue(priv->assoc_thread);
950
951 if (adapter->psmode == wlan802_11powermodemax_psp) {
952 adapter->psmode = wlan802_11powermodecam;
953 libertas_ps_wakeup(priv, cmd_option_waitforrsp);
954 }
955
956 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
957 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
958 wireless_send_event(priv->wlan_dev.netdev, SIOCGIWAP, &wrqu, NULL);
959
876c9d3a
MT		 960 adapter->surpriseremoved = 1;
961
962 /* Stop the thread servicing the interrupts */
963 wlan_terminate_thread(&priv->mainthread);
964
965 libertas_debugfs_remove_one(priv);
966
967 lbs_pr_debug(1, "Free adapter\n");
968 libertas_free_adapter(priv);
969
970 for (i = 0; i<libertas_found; i++) {
971 if (libertas_devs[i]==priv->wlan_dev.netdev) {
972 libertas_devs[i] = libertas_devs[--libertas_found];
973 libertas_devs[libertas_found] = NULL ;
974 break ;
975 }
976 }
977
978 lbs_pr_debug(1, "Unregister finish\n");
979
980 priv->wlan_dev.netdev = NULL;
981 priv->mesh_dev = NULL ;
982 free_netdev(mesh_dev);
983 free_netdev(dev);
876c9d3a
MT		 984
985 LEAVE();
986 return 0;
987}
988
989/**
990 * @brief This function finds the CFP in
991 * region_cfp_table based on region and band parameter.
992 *
993 * @param region The region code
994 * @param band The band
995 * @param cfp_no A pointer to CFP number
996 * @return A pointer to CFP
997 */
998struct chan_freq_power *libertas_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
999{
1000 int i, end;
1001
1002 ENTER();
1003
1004 end = sizeof(region_cfp_table)/sizeof(struct region_cfp_table);
1005
1006 for (i = 0; i < end ; i++) {
1007 lbs_pr_debug(1, "region_cfp_table[i].region=%d\n",
1008 region_cfp_table[i].region);
1009 if (region_cfp_table[i].region == region) {
1010 *cfp_no = region_cfp_table[i].cfp_no_BG;
1011 LEAVE();
1012 return region_cfp_table[i].cfp_BG;
1013 }
1014 }
1015
1016 LEAVE();
1017 return NULL;
1018}
1019
1020int libertas_set_regiontable(wlan_private * priv, u8 region, u8 band)
1021{
1022 wlan_adapter *adapter = priv->adapter;
1023 int i = 0;
1024
1025 struct chan_freq_power *cfp;
1026 int cfp_no;
1027
1028 ENTER();
1029
1030 memset(adapter->region_channel, 0, sizeof(adapter->region_channel));
1031
1032 {
1033 cfp = libertas_get_region_cfp_table(region, band, &cfp_no);
1034 if (cfp != NULL) {
1035 adapter->region_channel[i].nrcfp = cfp_no;
1036 adapter->region_channel[i].CFP = cfp;
1037 } else {
1038 lbs_pr_debug(1, "wrong region code %#x in band B-G\n",
1039 region);
1040 return -1;
1041 }
1042 adapter->region_channel[i].valid = 1;
1043 adapter->region_channel[i].region = region;
1044 adapter->region_channel[i].band = band;
1045 i++;
1046 }
1047 LEAVE();
1048 return 0;
1049}
1050
1051/**
1052 * @brief This function handles the interrupt. it will change PS
1053 * state if applicable. it will wake up main_thread to handle
1054 * the interrupt event as well.
1055 *
1056 * @param dev A pointer to net_device structure
1057 * @return n/a
1058 */
1059void libertas_interrupt(struct net_device *dev)
1060{
1061 wlan_private *priv = dev->priv;
1062
1063 ENTER();
1064
1065 lbs_pr_debug(1, "libertas_interrupt: intcounter=%d\n",
1066 priv->adapter->intcounter);
1067
1068 priv->adapter->intcounter++;
1069
1070 if (priv->adapter->psstate == PS_STATE_SLEEP) {
1071 priv->adapter->psstate = PS_STATE_AWAKE;
1072 netif_wake_queue(dev);
1073 }
1074
1075 wake_up_interruptible(&priv->mainthread.waitq);
1076
1077 LEAVE();
1078}
1079
1080static int wlan_init_module(void)
1081{
1082 int ret = 0;
1083
1084 ENTER();
1085
1086 if (libertas_fw_name == NULL) {
1087 libertas_fw_name = default_fw_name;
1088 }
1089
1090 libertas_debugfs_init();
1091
1092 if (libertas_sbi_register()) {
1093 ret = -1;
1094 libertas_debugfs_remove();
1095 goto done;
1096 }
1097
1098done:
1099 LEAVE();
1100 return ret;
1101}
1102
1103static void wlan_cleanup_module(void)
1104{
1105 int i;
1106
1107 ENTER();
1108
1109 for (i = 0; i<libertas_found; i++) {
1110 wlan_private *priv = libertas_devs[i]->priv;
1111 reset_device(priv);
1112 }
1113
1114 libertas_sbi_unregister();
1115 libertas_debugfs_remove();
1116
1117 LEAVE();
1118}
1119
1120module_init(wlan_init_module);
1121module_exit(wlan_cleanup_module);
1122
1123MODULE_DESCRIPTION("M-WLAN Driver");
1124MODULE_AUTHOR("Marvell International Ltd.");
1125MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)