[ARM] pxa: Gumstix Verdex PCMCIA support
[linux-2.6/verdex.git] / drivers / net / wireless / libertas / main.c
blob87b4e497faa2eee4818e81d5df49732710bdd48e
1 /**
2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
4 * thread etc..
5 */
7 #include <linux/moduleparam.h>
8 #include <linux/delay.h>
9 #include <linux/etherdevice.h>
10 #include <linux/netdevice.h>
11 #include <linux/if_arp.h>
12 #include <linux/kthread.h>
13 #include <linux/kfifo.h>
14 #include <linux/stddef.h>
15 #include <linux/ieee80211.h>
16 #include <net/iw_handler.h>
18 #include "host.h"
19 #include "decl.h"
20 #include "dev.h"
21 #include "wext.h"
22 #include "debugfs.h"
23 #include "scan.h"
24 #include "assoc.h"
25 #include "cmd.h"
27 #define DRIVER_RELEASE_VERSION "323.p0"
28 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
29 #ifdef DEBUG
30 "-dbg"
31 #endif
32 "";
35 /* Module parameters */
36 unsigned int lbs_debug;
37 EXPORT_SYMBOL_GPL(lbs_debug);
38 module_param_named(libertas_debug, lbs_debug, int, 0644);
41 /* This global structure is used to send the confirm_sleep command as
42 * fast as possible down to the firmware. */
43 struct cmd_confirm_sleep confirm_sleep;
46 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
47 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
48 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
49 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
50 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
52 /* Format { channel, frequency (MHz), maxtxpower } */
53 /* band: 'B/G', region: USA FCC/Canada IC */
54 static struct chan_freq_power channel_freq_power_US_BG[] = {
55 {1, 2412, LBS_TX_PWR_US_DEFAULT},
56 {2, 2417, LBS_TX_PWR_US_DEFAULT},
57 {3, 2422, LBS_TX_PWR_US_DEFAULT},
58 {4, 2427, LBS_TX_PWR_US_DEFAULT},
59 {5, 2432, LBS_TX_PWR_US_DEFAULT},
60 {6, 2437, LBS_TX_PWR_US_DEFAULT},
61 {7, 2442, LBS_TX_PWR_US_DEFAULT},
62 {8, 2447, LBS_TX_PWR_US_DEFAULT},
63 {9, 2452, LBS_TX_PWR_US_DEFAULT},
64 {10, 2457, LBS_TX_PWR_US_DEFAULT},
65 {11, 2462, LBS_TX_PWR_US_DEFAULT}
68 /* band: 'B/G', region: Europe ETSI */
69 static struct chan_freq_power channel_freq_power_EU_BG[] = {
70 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
71 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
72 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
73 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
74 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
75 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
76 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
77 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
78 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
79 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
80 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
81 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
82 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
85 /* band: 'B/G', region: Spain */
86 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
87 {10, 2457, LBS_TX_PWR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_DEFAULT}
91 /* band: 'B/G', region: France */
92 static struct chan_freq_power channel_freq_power_FR_BG[] = {
93 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
94 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
95 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
96 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
99 /* band: 'B/G', region: Japan */
100 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
101 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
102 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
103 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
104 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
105 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
106 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
107 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
108 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
109 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
110 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
111 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
112 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
113 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
114 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
118 * the structure for channel, frequency and power
120 struct region_cfp_table {
121 u8 region;
122 struct chan_freq_power *cfp_BG;
123 int cfp_no_BG;
127 * the structure for the mapping between region and CFP
129 static struct region_cfp_table region_cfp_table[] = {
130 {0x10, /*US FCC */
131 channel_freq_power_US_BG,
132 ARRAY_SIZE(channel_freq_power_US_BG),
135 {0x20, /*CANADA IC */
136 channel_freq_power_US_BG,
137 ARRAY_SIZE(channel_freq_power_US_BG),
140 {0x30, /*EU*/ channel_freq_power_EU_BG,
141 ARRAY_SIZE(channel_freq_power_EU_BG),
144 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
145 ARRAY_SIZE(channel_freq_power_SPN_BG),
148 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
149 ARRAY_SIZE(channel_freq_power_FR_BG),
152 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
153 ARRAY_SIZE(channel_freq_power_JPN_BG),
156 /*Add new region here */
160 * the table to keep region code
162 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
163 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
166 * 802.11b/g supported bitrates (in 500Kb/s units)
168 u8 lbs_bg_rates[MAX_RATES] =
169 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
170 0x00, 0x00 };
173 * FW rate table. FW refers to rates by their index in this table, not by the
174 * rate value itself. Values of 0x00 are
175 * reserved positions.
177 static u8 fw_data_rates[MAX_RATES] =
178 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
179 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
183 * @brief use index to get the data rate
185 * @param idx The index of data rate
186 * @return data rate or 0
188 u32 lbs_fw_index_to_data_rate(u8 idx)
190 if (idx >= sizeof(fw_data_rates))
191 idx = 0;
192 return fw_data_rates[idx];
196 * @brief use rate to get the index
198 * @param rate data rate
199 * @return index or 0
201 u8 lbs_data_rate_to_fw_index(u32 rate)
203 u8 i;
205 if (!rate)
206 return 0;
208 for (i = 0; i < sizeof(fw_data_rates); i++) {
209 if (rate == fw_data_rates[i])
210 return i;
212 return 0;
216 * Attributes exported through sysfs
220 * @brief Get function for sysfs attribute anycast_mask
222 static ssize_t lbs_anycast_get(struct device *dev,
223 struct device_attribute *attr, char * buf)
225 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
226 struct cmd_ds_mesh_access mesh_access;
227 int ret;
229 memset(&mesh_access, 0, sizeof(mesh_access));
231 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
232 if (ret)
233 return ret;
235 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
239 * @brief Set function for sysfs attribute anycast_mask
241 static ssize_t lbs_anycast_set(struct device *dev,
242 struct device_attribute *attr, const char * buf, size_t count)
244 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
245 struct cmd_ds_mesh_access mesh_access;
246 uint32_t datum;
247 int ret;
249 memset(&mesh_access, 0, sizeof(mesh_access));
250 sscanf(buf, "%x", &datum);
251 mesh_access.data[0] = cpu_to_le32(datum);
253 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
254 if (ret)
255 return ret;
257 return strlen(buf);
261 * @brief Get function for sysfs attribute prb_rsp_limit
263 static ssize_t lbs_prb_rsp_limit_get(struct device *dev,
264 struct device_attribute *attr, char *buf)
266 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
267 struct cmd_ds_mesh_access mesh_access;
268 int ret;
269 u32 retry_limit;
271 memset(&mesh_access, 0, sizeof(mesh_access));
272 mesh_access.data[0] = cpu_to_le32(CMD_ACT_GET);
274 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
275 &mesh_access);
276 if (ret)
277 return ret;
279 retry_limit = le32_to_cpu(mesh_access.data[1]);
280 return snprintf(buf, 10, "%d\n", retry_limit);
284 * @brief Set function for sysfs attribute prb_rsp_limit
286 static ssize_t lbs_prb_rsp_limit_set(struct device *dev,
287 struct device_attribute *attr, const char *buf, size_t count)
289 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
290 struct cmd_ds_mesh_access mesh_access;
291 int ret;
292 unsigned long retry_limit;
294 memset(&mesh_access, 0, sizeof(mesh_access));
295 mesh_access.data[0] = cpu_to_le32(CMD_ACT_SET);
297 if (!strict_strtoul(buf, 10, &retry_limit))
298 return -ENOTSUPP;
299 if (retry_limit > 15)
300 return -ENOTSUPP;
302 mesh_access.data[1] = cpu_to_le32(retry_limit);
304 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_GET_PRB_RSP_LIMIT,
305 &mesh_access);
306 if (ret)
307 return ret;
309 return strlen(buf);
312 static int lbs_add_rtap(struct lbs_private *priv);
313 static void lbs_remove_rtap(struct lbs_private *priv);
314 static int lbs_add_mesh(struct lbs_private *priv);
315 static void lbs_remove_mesh(struct lbs_private *priv);
319 * Get function for sysfs attribute rtap
321 static ssize_t lbs_rtap_get(struct device *dev,
322 struct device_attribute *attr, char * buf)
324 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
325 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
329 * Set function for sysfs attribute rtap
331 static ssize_t lbs_rtap_set(struct device *dev,
332 struct device_attribute *attr, const char * buf, size_t count)
334 int monitor_mode;
335 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
337 sscanf(buf, "%x", &monitor_mode);
338 if (monitor_mode) {
339 if (priv->monitormode == monitor_mode)
340 return strlen(buf);
341 if (!priv->monitormode) {
342 if (priv->infra_open || priv->mesh_open)
343 return -EBUSY;
344 if (priv->mode == IW_MODE_INFRA)
345 lbs_cmd_80211_deauthenticate(priv,
346 priv->curbssparams.bssid,
347 WLAN_REASON_DEAUTH_LEAVING);
348 else if (priv->mode == IW_MODE_ADHOC)
349 lbs_adhoc_stop(priv);
350 lbs_add_rtap(priv);
352 priv->monitormode = monitor_mode;
353 } else {
354 if (!priv->monitormode)
355 return strlen(buf);
356 priv->monitormode = 0;
357 lbs_remove_rtap(priv);
359 if (priv->currenttxskb) {
360 dev_kfree_skb_any(priv->currenttxskb);
361 priv->currenttxskb = NULL;
364 /* Wake queues, command thread, etc. */
365 lbs_host_to_card_done(priv);
368 lbs_prepare_and_send_command(priv,
369 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
370 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
371 return strlen(buf);
375 * lbs_rtap attribute to be exported per ethX interface
376 * through sysfs (/sys/class/net/ethX/lbs_rtap)
378 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
381 * Get function for sysfs attribute mesh
383 static ssize_t lbs_mesh_get(struct device *dev,
384 struct device_attribute *attr, char * buf)
386 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
387 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
391 * Set function for sysfs attribute mesh
393 static ssize_t lbs_mesh_set(struct device *dev,
394 struct device_attribute *attr, const char * buf, size_t count)
396 struct lbs_private *priv = to_net_dev(dev)->ml_priv;
397 int enable;
398 int ret, action = CMD_ACT_MESH_CONFIG_STOP;
400 sscanf(buf, "%x", &enable);
401 enable = !!enable;
402 if (enable == !!priv->mesh_dev)
403 return count;
404 if (enable)
405 action = CMD_ACT_MESH_CONFIG_START;
406 ret = lbs_mesh_config(priv, action, priv->curbssparams.channel);
407 if (ret)
408 return ret;
410 if (enable)
411 lbs_add_mesh(priv);
412 else
413 lbs_remove_mesh(priv);
415 return count;
419 * lbs_mesh attribute to be exported per ethX interface
420 * through sysfs (/sys/class/net/ethX/lbs_mesh)
422 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
425 * anycast_mask attribute to be exported per mshX interface
426 * through sysfs (/sys/class/net/mshX/anycast_mask)
428 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
431 * prb_rsp_limit attribute to be exported per mshX interface
432 * through sysfs (/sys/class/net/mshX/prb_rsp_limit)
434 static DEVICE_ATTR(prb_rsp_limit, 0644, lbs_prb_rsp_limit_get,
435 lbs_prb_rsp_limit_set);
437 static struct attribute *lbs_mesh_sysfs_entries[] = {
438 &dev_attr_anycast_mask.attr,
439 &dev_attr_prb_rsp_limit.attr,
440 NULL,
443 static struct attribute_group lbs_mesh_attr_group = {
444 .attrs = lbs_mesh_sysfs_entries,
448 * @brief This function opens the ethX or mshX interface
450 * @param dev A pointer to net_device structure
451 * @return 0 or -EBUSY if monitor mode active
453 static int lbs_dev_open(struct net_device *dev)
455 struct lbs_private *priv = dev->ml_priv;
456 int ret = 0;
458 lbs_deb_enter(LBS_DEB_NET);
460 spin_lock_irq(&priv->driver_lock);
462 if (priv->monitormode) {
463 ret = -EBUSY;
464 goto out;
467 if (dev == priv->mesh_dev) {
468 priv->mesh_open = 1;
469 priv->mesh_connect_status = LBS_CONNECTED;
470 netif_carrier_on(dev);
471 } else {
472 priv->infra_open = 1;
474 if (priv->connect_status == LBS_CONNECTED)
475 netif_carrier_on(dev);
476 else
477 netif_carrier_off(dev);
480 if (!priv->tx_pending_len)
481 netif_wake_queue(dev);
482 out:
484 spin_unlock_irq(&priv->driver_lock);
485 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
486 return ret;
490 * @brief This function closes the mshX interface
492 * @param dev A pointer to net_device structure
493 * @return 0
495 static int lbs_mesh_stop(struct net_device *dev)
497 struct lbs_private *priv = dev->ml_priv;
499 lbs_deb_enter(LBS_DEB_MESH);
500 spin_lock_irq(&priv->driver_lock);
502 priv->mesh_open = 0;
503 priv->mesh_connect_status = LBS_DISCONNECTED;
505 netif_stop_queue(dev);
506 netif_carrier_off(dev);
508 spin_unlock_irq(&priv->driver_lock);
510 schedule_work(&priv->mcast_work);
512 lbs_deb_leave(LBS_DEB_MESH);
513 return 0;
517 * @brief This function closes the ethX interface
519 * @param dev A pointer to net_device structure
520 * @return 0
522 static int lbs_eth_stop(struct net_device *dev)
524 struct lbs_private *priv = dev->ml_priv;
526 lbs_deb_enter(LBS_DEB_NET);
528 spin_lock_irq(&priv->driver_lock);
529 priv->infra_open = 0;
530 netif_stop_queue(dev);
531 spin_unlock_irq(&priv->driver_lock);
533 schedule_work(&priv->mcast_work);
535 lbs_deb_leave(LBS_DEB_NET);
536 return 0;
539 static void lbs_tx_timeout(struct net_device *dev)
541 struct lbs_private *priv = dev->ml_priv;
543 lbs_deb_enter(LBS_DEB_TX);
545 lbs_pr_err("tx watch dog timeout\n");
547 dev->trans_start = jiffies;
549 if (priv->currenttxskb)
550 lbs_send_tx_feedback(priv, 0);
552 /* XX: Shouldn't we also call into the hw-specific driver
553 to kick it somehow? */
554 lbs_host_to_card_done(priv);
556 /* More often than not, this actually happens because the
557 firmware has crapped itself -- rather than just a very
558 busy medium. So send a harmless command, and if/when
559 _that_ times out, we'll kick it in the head. */
560 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
561 0, 0, NULL);
563 lbs_deb_leave(LBS_DEB_TX);
566 void lbs_host_to_card_done(struct lbs_private *priv)
568 unsigned long flags;
570 lbs_deb_enter(LBS_DEB_THREAD);
572 spin_lock_irqsave(&priv->driver_lock, flags);
574 priv->dnld_sent = DNLD_RES_RECEIVED;
576 /* Wake main thread if commands are pending */
577 if (!priv->cur_cmd || priv->tx_pending_len > 0)
578 wake_up_interruptible(&priv->waitq);
580 spin_unlock_irqrestore(&priv->driver_lock, flags);
581 lbs_deb_leave(LBS_DEB_THREAD);
583 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
585 static int lbs_set_mac_address(struct net_device *dev, void *addr)
587 int ret = 0;
588 struct lbs_private *priv = dev->ml_priv;
589 struct sockaddr *phwaddr = addr;
590 struct cmd_ds_802_11_mac_address cmd;
592 lbs_deb_enter(LBS_DEB_NET);
594 /* In case it was called from the mesh device */
595 dev = priv->dev;
597 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
598 cmd.action = cpu_to_le16(CMD_ACT_SET);
599 memcpy(cmd.macadd, phwaddr->sa_data, ETH_ALEN);
601 ret = lbs_cmd_with_response(priv, CMD_802_11_MAC_ADDRESS, &cmd);
602 if (ret) {
603 lbs_deb_net("set MAC address failed\n");
604 goto done;
607 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
608 memcpy(dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
609 if (priv->mesh_dev)
610 memcpy(priv->mesh_dev->dev_addr, phwaddr->sa_data, ETH_ALEN);
612 done:
613 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
614 return ret;
618 static inline int mac_in_list(unsigned char *list, int list_len,
619 unsigned char *mac)
621 while (list_len) {
622 if (!memcmp(list, mac, ETH_ALEN))
623 return 1;
624 list += ETH_ALEN;
625 list_len--;
627 return 0;
631 static int lbs_add_mcast_addrs(struct cmd_ds_mac_multicast_adr *cmd,
632 struct net_device *dev, int nr_addrs)
634 int i = nr_addrs;
635 struct dev_mc_list *mc_list;
637 if ((dev->flags & (IFF_UP|IFF_MULTICAST)) != (IFF_UP|IFF_MULTICAST))
638 return nr_addrs;
640 netif_addr_lock_bh(dev);
641 for (mc_list = dev->mc_list; mc_list; mc_list = mc_list->next) {
642 if (mac_in_list(cmd->maclist, nr_addrs, mc_list->dmi_addr)) {
643 lbs_deb_net("mcast address %s:%pM skipped\n", dev->name,
644 mc_list->dmi_addr);
645 continue;
648 if (i == MRVDRV_MAX_MULTICAST_LIST_SIZE)
649 break;
650 memcpy(&cmd->maclist[6*i], mc_list->dmi_addr, ETH_ALEN);
651 lbs_deb_net("mcast address %s:%pM added to filter\n", dev->name,
652 mc_list->dmi_addr);
653 i++;
655 netif_addr_unlock_bh(dev);
656 if (mc_list)
657 return -EOVERFLOW;
659 return i;
662 static void lbs_set_mcast_worker(struct work_struct *work)
664 struct lbs_private *priv = container_of(work, struct lbs_private, mcast_work);
665 struct cmd_ds_mac_multicast_adr mcast_cmd;
666 int dev_flags;
667 int nr_addrs;
668 int old_mac_control = priv->mac_control;
670 lbs_deb_enter(LBS_DEB_NET);
672 dev_flags = priv->dev->flags;
673 if (priv->mesh_dev)
674 dev_flags |= priv->mesh_dev->flags;
676 if (dev_flags & IFF_PROMISC) {
677 priv->mac_control |= CMD_ACT_MAC_PROMISCUOUS_ENABLE;
678 priv->mac_control &= ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
679 CMD_ACT_MAC_MULTICAST_ENABLE);
680 goto out_set_mac_control;
681 } else if (dev_flags & IFF_ALLMULTI) {
682 do_allmulti:
683 priv->mac_control |= CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
684 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
685 CMD_ACT_MAC_MULTICAST_ENABLE);
686 goto out_set_mac_control;
689 /* Once for priv->dev, again for priv->mesh_dev if it exists */
690 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->dev, 0);
691 if (nr_addrs >= 0 && priv->mesh_dev)
692 nr_addrs = lbs_add_mcast_addrs(&mcast_cmd, priv->mesh_dev, nr_addrs);
693 if (nr_addrs < 0)
694 goto do_allmulti;
696 if (nr_addrs) {
697 int size = offsetof(struct cmd_ds_mac_multicast_adr,
698 maclist[6*nr_addrs]);
700 mcast_cmd.action = cpu_to_le16(CMD_ACT_SET);
701 mcast_cmd.hdr.size = cpu_to_le16(size);
702 mcast_cmd.nr_of_adrs = cpu_to_le16(nr_addrs);
704 lbs_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &mcast_cmd.hdr, size);
706 priv->mac_control |= CMD_ACT_MAC_MULTICAST_ENABLE;
707 } else
708 priv->mac_control &= ~CMD_ACT_MAC_MULTICAST_ENABLE;
710 priv->mac_control &= ~(CMD_ACT_MAC_PROMISCUOUS_ENABLE |
711 CMD_ACT_MAC_ALL_MULTICAST_ENABLE);
712 out_set_mac_control:
713 if (priv->mac_control != old_mac_control)
714 lbs_set_mac_control(priv);
716 lbs_deb_leave(LBS_DEB_NET);
719 static void lbs_set_multicast_list(struct net_device *dev)
721 struct lbs_private *priv = dev->ml_priv;
723 schedule_work(&priv->mcast_work);
727 * @brief This function handles the major jobs in the LBS driver.
728 * It handles all events generated by firmware, RX data received
729 * from firmware and TX data sent from kernel.
731 * @param data A pointer to lbs_thread structure
732 * @return 0
734 static int lbs_thread(void *data)
736 struct net_device *dev = data;
737 struct lbs_private *priv = dev->ml_priv;
738 wait_queue_t wait;
740 lbs_deb_enter(LBS_DEB_THREAD);
742 init_waitqueue_entry(&wait, current);
744 for (;;) {
745 int shouldsleep;
746 u8 resp_idx;
748 lbs_deb_thread("1: currenttxskb %p, dnld_sent %d\n",
749 priv->currenttxskb, priv->dnld_sent);
751 add_wait_queue(&priv->waitq, &wait);
752 set_current_state(TASK_INTERRUPTIBLE);
753 spin_lock_irq(&priv->driver_lock);
755 if (kthread_should_stop())
756 shouldsleep = 0; /* Bye */
757 else if (priv->surpriseremoved)
758 shouldsleep = 1; /* We need to wait until we're _told_ to die */
759 else if (priv->psstate == PS_STATE_SLEEP)
760 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
761 else if (priv->cmd_timed_out)
762 shouldsleep = 0; /* Command timed out. Recover */
763 else if (!priv->fw_ready)
764 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
765 else if (priv->dnld_sent)
766 shouldsleep = 1; /* Something is en route to the device already */
767 else if (priv->tx_pending_len > 0)
768 shouldsleep = 0; /* We've a packet to send */
769 else if (priv->resp_len[priv->resp_idx])
770 shouldsleep = 0; /* We have a command response */
771 else if (priv->cur_cmd)
772 shouldsleep = 1; /* Can't send a command; one already running */
773 else if (!list_empty(&priv->cmdpendingq))
774 shouldsleep = 0; /* We have a command to send */
775 else if (__kfifo_len(priv->event_fifo))
776 shouldsleep = 0; /* We have an event to process */
777 else
778 shouldsleep = 1; /* No command */
780 if (shouldsleep) {
781 lbs_deb_thread("sleeping, connect_status %d, "
782 "psmode %d, psstate %d\n",
783 priv->connect_status,
784 priv->psmode, priv->psstate);
785 spin_unlock_irq(&priv->driver_lock);
786 schedule();
787 } else
788 spin_unlock_irq(&priv->driver_lock);
790 lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
791 priv->currenttxskb, priv->dnld_sent);
793 set_current_state(TASK_RUNNING);
794 remove_wait_queue(&priv->waitq, &wait);
796 lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
797 priv->currenttxskb, priv->dnld_sent);
799 if (kthread_should_stop()) {
800 lbs_deb_thread("break from main thread\n");
801 break;
804 if (priv->surpriseremoved) {
805 lbs_deb_thread("adapter removed; waiting to die...\n");
806 continue;
809 lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
810 priv->currenttxskb, priv->dnld_sent);
812 /* Process any pending command response */
813 spin_lock_irq(&priv->driver_lock);
814 resp_idx = priv->resp_idx;
815 if (priv->resp_len[resp_idx]) {
816 spin_unlock_irq(&priv->driver_lock);
817 lbs_process_command_response(priv,
818 priv->resp_buf[resp_idx],
819 priv->resp_len[resp_idx]);
820 spin_lock_irq(&priv->driver_lock);
821 priv->resp_len[resp_idx] = 0;
823 spin_unlock_irq(&priv->driver_lock);
825 /* command timeout stuff */
826 if (priv->cmd_timed_out && priv->cur_cmd) {
827 struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
829 if (++priv->nr_retries > 3) {
830 lbs_pr_info("Excessive timeouts submitting "
831 "command 0x%04x\n",
832 le16_to_cpu(cmdnode->cmdbuf->command));
833 lbs_complete_command(priv, cmdnode, -ETIMEDOUT);
834 priv->nr_retries = 0;
835 if (priv->reset_card)
836 priv->reset_card(priv);
837 } else {
838 priv->cur_cmd = NULL;
839 priv->dnld_sent = DNLD_RES_RECEIVED;
840 lbs_pr_info("requeueing command 0x%04x due "
841 "to timeout (#%d)\n",
842 le16_to_cpu(cmdnode->cmdbuf->command),
843 priv->nr_retries);
845 /* Stick it back at the _top_ of the pending queue
846 for immediate resubmission */
847 list_add(&cmdnode->list, &priv->cmdpendingq);
850 priv->cmd_timed_out = 0;
852 /* Process hardware events, e.g. card removed, link lost */
853 spin_lock_irq(&priv->driver_lock);
854 while (__kfifo_len(priv->event_fifo)) {
855 u32 event;
857 __kfifo_get(priv->event_fifo, (unsigned char *) &event,
858 sizeof(event));
859 spin_unlock_irq(&priv->driver_lock);
860 lbs_process_event(priv, event);
861 spin_lock_irq(&priv->driver_lock);
863 spin_unlock_irq(&priv->driver_lock);
865 if (!priv->fw_ready)
866 continue;
868 /* Check if we need to confirm Sleep Request received previously */
869 if (priv->psstate == PS_STATE_PRE_SLEEP &&
870 !priv->dnld_sent && !priv->cur_cmd) {
871 if (priv->connect_status == LBS_CONNECTED) {
872 lbs_deb_thread("pre-sleep, currenttxskb %p, "
873 "dnld_sent %d, cur_cmd %p\n",
874 priv->currenttxskb, priv->dnld_sent,
875 priv->cur_cmd);
877 lbs_ps_confirm_sleep(priv);
878 } else {
879 /* workaround for firmware sending
880 * deauth/linkloss event immediately
881 * after sleep request; remove this
882 * after firmware fixes it
884 priv->psstate = PS_STATE_AWAKE;
885 lbs_pr_alert("ignore PS_SleepConfirm in "
886 "non-connected state\n");
890 /* The PS state is changed during processing of Sleep Request
891 * event above
893 if ((priv->psstate == PS_STATE_SLEEP) ||
894 (priv->psstate == PS_STATE_PRE_SLEEP))
895 continue;
897 /* Execute the next command */
898 if (!priv->dnld_sent && !priv->cur_cmd)
899 lbs_execute_next_command(priv);
901 /* Wake-up command waiters which can't sleep in
902 * lbs_prepare_and_send_command
904 if (!list_empty(&priv->cmdpendingq))
905 wake_up_all(&priv->cmd_pending);
907 spin_lock_irq(&priv->driver_lock);
908 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
909 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
910 priv->tx_pending_buf,
911 priv->tx_pending_len);
912 if (ret) {
913 lbs_deb_tx("host_to_card failed %d\n", ret);
914 priv->dnld_sent = DNLD_RES_RECEIVED;
916 priv->tx_pending_len = 0;
917 if (!priv->currenttxskb) {
918 /* We can wake the queues immediately if we aren't
919 waiting for TX feedback */
920 if (priv->connect_status == LBS_CONNECTED)
921 netif_wake_queue(priv->dev);
922 if (priv->mesh_dev &&
923 priv->mesh_connect_status == LBS_CONNECTED)
924 netif_wake_queue(priv->mesh_dev);
927 spin_unlock_irq(&priv->driver_lock);
930 del_timer(&priv->command_timer);
931 wake_up_all(&priv->cmd_pending);
933 lbs_deb_leave(LBS_DEB_THREAD);
934 return 0;
937 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
938 struct cmd_header *cmd)
940 lbs_deb_enter(LBS_DEB_FW);
942 netif_device_detach(priv->dev);
943 if (priv->mesh_dev)
944 netif_device_detach(priv->mesh_dev);
946 priv->fw_ready = 0;
947 lbs_deb_leave(LBS_DEB_FW);
948 return 0;
951 int lbs_suspend(struct lbs_private *priv)
953 struct cmd_header cmd;
954 int ret;
956 lbs_deb_enter(LBS_DEB_FW);
958 if (priv->wol_criteria == 0xffffffff) {
959 lbs_pr_info("Suspend attempt without configuring wake params!\n");
960 return -EINVAL;
963 memset(&cmd, 0, sizeof(cmd));
965 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
966 sizeof(cmd), lbs_suspend_callback, 0);
967 if (ret)
968 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
970 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
971 return ret;
973 EXPORT_SYMBOL_GPL(lbs_suspend);
975 void lbs_resume(struct lbs_private *priv)
977 lbs_deb_enter(LBS_DEB_FW);
979 priv->fw_ready = 1;
981 /* Firmware doesn't seem to give us RX packets any more
982 until we send it some command. Might as well update */
983 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
984 0, 0, NULL);
986 netif_device_attach(priv->dev);
987 if (priv->mesh_dev)
988 netif_device_attach(priv->mesh_dev);
990 lbs_deb_leave(LBS_DEB_FW);
992 EXPORT_SYMBOL_GPL(lbs_resume);
995 * @brief This function gets the HW spec from the firmware and sets
996 * some basic parameters.
998 * @param priv A pointer to struct lbs_private structure
999 * @return 0 or -1
1001 static int lbs_setup_firmware(struct lbs_private *priv)
1003 int ret = -1;
1004 s16 curlevel = 0, minlevel = 0, maxlevel = 0;
1006 lbs_deb_enter(LBS_DEB_FW);
1008 /* Read MAC address from firmware */
1009 memset(priv->current_addr, 0xff, ETH_ALEN);
1010 ret = lbs_update_hw_spec(priv);
1011 if (ret)
1012 goto done;
1014 /* Read power levels if available */
1015 ret = lbs_get_tx_power(priv, &curlevel, &minlevel, &maxlevel);
1016 if (ret == 0) {
1017 priv->txpower_cur = curlevel;
1018 priv->txpower_min = minlevel;
1019 priv->txpower_max = maxlevel;
1022 lbs_set_mac_control(priv);
1023 done:
1024 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
1025 return ret;
1029 * This function handles the timeout of command sending.
1030 * It will re-send the same command again.
1032 static void command_timer_fn(unsigned long data)
1034 struct lbs_private *priv = (struct lbs_private *)data;
1035 unsigned long flags;
1037 lbs_deb_enter(LBS_DEB_CMD);
1038 spin_lock_irqsave(&priv->driver_lock, flags);
1040 if (!priv->cur_cmd)
1041 goto out;
1043 lbs_pr_info("command 0x%04x timed out\n",
1044 le16_to_cpu(priv->cur_cmd->cmdbuf->command));
1046 priv->cmd_timed_out = 1;
1047 wake_up_interruptible(&priv->waitq);
1048 out:
1049 spin_unlock_irqrestore(&priv->driver_lock, flags);
1050 lbs_deb_leave(LBS_DEB_CMD);
1053 static void lbs_sync_channel_worker(struct work_struct *work)
1055 struct lbs_private *priv = container_of(work, struct lbs_private,
1056 sync_channel);
1058 lbs_deb_enter(LBS_DEB_MAIN);
1059 if (lbs_update_channel(priv))
1060 lbs_pr_info("Channel synchronization failed.");
1061 lbs_deb_leave(LBS_DEB_MAIN);
1065 static int lbs_init_adapter(struct lbs_private *priv)
1067 size_t bufsize;
1068 int i, ret = 0;
1070 lbs_deb_enter(LBS_DEB_MAIN);
1072 /* Allocate buffer to store the BSSID list */
1073 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
1074 priv->networks = kzalloc(bufsize, GFP_KERNEL);
1075 if (!priv->networks) {
1076 lbs_pr_err("Out of memory allocating beacons\n");
1077 ret = -1;
1078 goto out;
1081 /* Initialize scan result lists */
1082 INIT_LIST_HEAD(&priv->network_free_list);
1083 INIT_LIST_HEAD(&priv->network_list);
1084 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
1085 list_add_tail(&priv->networks[i].list,
1086 &priv->network_free_list);
1089 memset(priv->current_addr, 0xff, ETH_ALEN);
1091 priv->connect_status = LBS_DISCONNECTED;
1092 priv->mesh_connect_status = LBS_DISCONNECTED;
1093 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
1094 priv->mode = IW_MODE_INFRA;
1095 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
1096 priv->mac_control = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
1097 priv->radio_on = 1;
1098 priv->enablehwauto = 1;
1099 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
1100 priv->psmode = LBS802_11POWERMODECAM;
1101 priv->psstate = PS_STATE_FULL_POWER;
1103 mutex_init(&priv->lock);
1105 setup_timer(&priv->command_timer, command_timer_fn,
1106 (unsigned long)priv);
1108 INIT_LIST_HEAD(&priv->cmdfreeq);
1109 INIT_LIST_HEAD(&priv->cmdpendingq);
1111 spin_lock_init(&priv->driver_lock);
1112 init_waitqueue_head(&priv->cmd_pending);
1114 /* Allocate the command buffers */
1115 if (lbs_allocate_cmd_buffer(priv)) {
1116 lbs_pr_err("Out of memory allocating command buffers\n");
1117 ret = -ENOMEM;
1118 goto out;
1120 priv->resp_idx = 0;
1121 priv->resp_len[0] = priv->resp_len[1] = 0;
1123 /* Create the event FIFO */
1124 priv->event_fifo = kfifo_alloc(sizeof(u32) * 16, GFP_KERNEL, NULL);
1125 if (IS_ERR(priv->event_fifo)) {
1126 lbs_pr_err("Out of memory allocating event FIFO buffer\n");
1127 ret = -ENOMEM;
1128 goto out;
1131 out:
1132 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1134 return ret;
1137 static void lbs_free_adapter(struct lbs_private *priv)
1139 lbs_deb_enter(LBS_DEB_MAIN);
1141 lbs_free_cmd_buffer(priv);
1142 if (priv->event_fifo)
1143 kfifo_free(priv->event_fifo);
1144 del_timer(&priv->command_timer);
1145 kfree(priv->networks);
1146 priv->networks = NULL;
1148 lbs_deb_leave(LBS_DEB_MAIN);
1151 static const struct net_device_ops lbs_netdev_ops = {
1152 .ndo_open = lbs_dev_open,
1153 .ndo_stop = lbs_eth_stop,
1154 .ndo_start_xmit = lbs_hard_start_xmit,
1155 .ndo_set_mac_address = lbs_set_mac_address,
1156 .ndo_tx_timeout = lbs_tx_timeout,
1157 .ndo_set_multicast_list = lbs_set_multicast_list,
1158 .ndo_change_mtu = eth_change_mtu,
1159 .ndo_validate_addr = eth_validate_addr,
1163 * @brief This function adds the card. it will probe the
1164 * card, allocate the lbs_priv and initialize the device.
1166 * @param card A pointer to card
1167 * @return A pointer to struct lbs_private structure
1169 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1171 struct net_device *dev = NULL;
1172 struct lbs_private *priv = NULL;
1174 lbs_deb_enter(LBS_DEB_MAIN);
1176 /* Allocate an Ethernet device and register it */
1177 dev = alloc_etherdev(sizeof(struct lbs_private));
1178 if (!dev) {
1179 lbs_pr_err("init wlanX device failed\n");
1180 goto done;
1182 priv = netdev_priv(dev);
1183 dev->ml_priv = priv;
1185 if (lbs_init_adapter(priv)) {
1186 lbs_pr_err("failed to initialize adapter structure.\n");
1187 goto err_init_adapter;
1190 priv->dev = dev;
1191 priv->card = card;
1192 priv->mesh_open = 0;
1193 priv->infra_open = 0;
1195 /* Setup the OS Interface to our functions */
1196 dev->netdev_ops = &lbs_netdev_ops;
1197 dev->watchdog_timeo = 5 * HZ;
1198 dev->ethtool_ops = &lbs_ethtool_ops;
1199 #ifdef WIRELESS_EXT
1200 dev->wireless_handlers = &lbs_handler_def;
1201 #endif
1202 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1204 SET_NETDEV_DEV(dev, dmdev);
1206 priv->rtap_net_dev = NULL;
1207 strcpy(dev->name, "wlan%d");
1209 lbs_deb_thread("Starting main thread...\n");
1210 init_waitqueue_head(&priv->waitq);
1211 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1212 if (IS_ERR(priv->main_thread)) {
1213 lbs_deb_thread("Error creating main thread.\n");
1214 goto err_init_adapter;
1217 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1218 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1219 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1220 INIT_WORK(&priv->mcast_work, lbs_set_mcast_worker);
1221 INIT_WORK(&priv->sync_channel, lbs_sync_channel_worker);
1223 sprintf(priv->mesh_ssid, "mesh");
1224 priv->mesh_ssid_len = 4;
1226 priv->wol_criteria = 0xffffffff;
1227 priv->wol_gpio = 0xff;
1229 goto done;
1231 err_init_adapter:
1232 lbs_free_adapter(priv);
1233 free_netdev(dev);
1234 priv = NULL;
1236 done:
1237 lbs_deb_leave_args(LBS_DEB_MAIN, "priv %p", priv);
1238 return priv;
1240 EXPORT_SYMBOL_GPL(lbs_add_card);
1243 void lbs_remove_card(struct lbs_private *priv)
1245 struct net_device *dev = priv->dev;
1246 union iwreq_data wrqu;
1248 lbs_deb_enter(LBS_DEB_MAIN);
1250 lbs_remove_mesh(priv);
1251 lbs_remove_rtap(priv);
1253 dev = priv->dev;
1255 cancel_delayed_work_sync(&priv->scan_work);
1256 cancel_delayed_work_sync(&priv->assoc_work);
1257 cancel_work_sync(&priv->mcast_work);
1259 /* worker thread destruction blocks on the in-flight command which
1260 * should have been cleared already in lbs_stop_card().
1262 lbs_deb_main("destroying worker thread\n");
1263 destroy_workqueue(priv->work_thread);
1264 lbs_deb_main("done destroying worker thread\n");
1266 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1267 priv->psmode = LBS802_11POWERMODECAM;
1268 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1271 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1272 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1273 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1275 /* Stop the thread servicing the interrupts */
1276 priv->surpriseremoved = 1;
1277 kthread_stop(priv->main_thread);
1279 lbs_free_adapter(priv);
1281 priv->dev = NULL;
1282 free_netdev(dev);
1284 lbs_deb_leave(LBS_DEB_MAIN);
1286 EXPORT_SYMBOL_GPL(lbs_remove_card);
1289 int lbs_start_card(struct lbs_private *priv)
1291 struct net_device *dev = priv->dev;
1292 int ret = -1;
1294 lbs_deb_enter(LBS_DEB_MAIN);
1296 /* poke the firmware */
1297 ret = lbs_setup_firmware(priv);
1298 if (ret)
1299 goto done;
1301 /* init 802.11d */
1302 lbs_init_11d(priv);
1304 if (register_netdev(dev)) {
1305 lbs_pr_err("cannot register ethX device\n");
1306 goto done;
1309 lbs_update_channel(priv);
1311 /* Check mesh FW version and appropriately send the mesh start
1312 * command
1314 if (priv->mesh_fw_ver == MESH_FW_OLD) {
1315 /* Enable mesh, if supported, and work out which TLV it uses.
1316 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1317 0x100 + 37 is the official value used in 5.110.21.pXX
1318 but we check them in that order because 20.pXX doesn't
1319 give an error -- it just silently fails. */
1321 /* 5.110.20.pXX firmware will fail the command if the channel
1322 doesn't match the existing channel. But only if the TLV
1323 is correct. If the channel is wrong, _BOTH_ versions will
1324 give an error to 0x100+291, and allow 0x100+37 to succeed.
1325 It's just that 5.110.20.pXX will not have done anything
1326 useful */
1328 priv->mesh_tlv = TLV_TYPE_OLD_MESH_ID;
1329 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1330 priv->curbssparams.channel)) {
1331 priv->mesh_tlv = TLV_TYPE_MESH_ID;
1332 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1333 priv->curbssparams.channel))
1334 priv->mesh_tlv = 0;
1336 } else if (priv->mesh_fw_ver == MESH_FW_NEW) {
1337 /* 10.0.0.pXX new firmwares should succeed with TLV
1338 * 0x100+37; Do not invoke command with old TLV.
1340 priv->mesh_tlv = TLV_TYPE_MESH_ID;
1341 if (lbs_mesh_config(priv, CMD_ACT_MESH_CONFIG_START,
1342 priv->curbssparams.channel))
1343 priv->mesh_tlv = 0;
1345 if (priv->mesh_tlv) {
1346 lbs_add_mesh(priv);
1348 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1349 lbs_pr_err("cannot register lbs_mesh attribute\n");
1351 /* While rtap isn't related to mesh, only mesh-enabled
1352 * firmware implements the rtap functionality via
1353 * CMD_802_11_MONITOR_MODE.
1355 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1356 lbs_pr_err("cannot register lbs_rtap attribute\n");
1359 lbs_debugfs_init_one(priv, dev);
1361 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1363 ret = 0;
1365 done:
1366 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1367 return ret;
1369 EXPORT_SYMBOL_GPL(lbs_start_card);
1372 void lbs_stop_card(struct lbs_private *priv)
1374 struct net_device *dev;
1375 struct cmd_ctrl_node *cmdnode;
1376 unsigned long flags;
1378 lbs_deb_enter(LBS_DEB_MAIN);
1380 if (!priv)
1381 goto out;
1382 dev = priv->dev;
1384 netif_stop_queue(dev);
1385 netif_carrier_off(dev);
1387 lbs_debugfs_remove_one(priv);
1388 if (priv->mesh_tlv) {
1389 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1390 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1393 /* Delete the timeout of the currently processing command */
1394 del_timer_sync(&priv->command_timer);
1396 /* Flush pending command nodes */
1397 spin_lock_irqsave(&priv->driver_lock, flags);
1398 lbs_deb_main("clearing pending commands\n");
1399 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1400 cmdnode->result = -ENOENT;
1401 cmdnode->cmdwaitqwoken = 1;
1402 wake_up_interruptible(&cmdnode->cmdwait_q);
1405 /* Flush the command the card is currently processing */
1406 if (priv->cur_cmd) {
1407 lbs_deb_main("clearing current command\n");
1408 priv->cur_cmd->result = -ENOENT;
1409 priv->cur_cmd->cmdwaitqwoken = 1;
1410 wake_up_interruptible(&priv->cur_cmd->cmdwait_q);
1412 lbs_deb_main("done clearing commands\n");
1413 spin_unlock_irqrestore(&priv->driver_lock, flags);
1415 unregister_netdev(dev);
1417 out:
1418 lbs_deb_leave(LBS_DEB_MAIN);
1420 EXPORT_SYMBOL_GPL(lbs_stop_card);
1423 static const struct net_device_ops mesh_netdev_ops = {
1424 .ndo_open = lbs_dev_open,
1425 .ndo_stop = lbs_mesh_stop,
1426 .ndo_start_xmit = lbs_hard_start_xmit,
1427 .ndo_set_mac_address = lbs_set_mac_address,
1428 .ndo_set_multicast_list = lbs_set_multicast_list,
1432 * @brief This function adds mshX interface
1434 * @param priv A pointer to the struct lbs_private structure
1435 * @return 0 if successful, -X otherwise
1437 static int lbs_add_mesh(struct lbs_private *priv)
1439 struct net_device *mesh_dev = NULL;
1440 int ret = 0;
1442 lbs_deb_enter(LBS_DEB_MESH);
1444 /* Allocate a virtual mesh device */
1445 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1446 lbs_deb_mesh("init mshX device failed\n");
1447 ret = -ENOMEM;
1448 goto done;
1450 mesh_dev->ml_priv = priv;
1451 priv->mesh_dev = mesh_dev;
1453 mesh_dev->netdev_ops = &mesh_netdev_ops;
1454 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1455 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1456 sizeof(priv->dev->dev_addr));
1458 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1460 #ifdef WIRELESS_EXT
1461 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1462 #endif
1463 mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1464 /* Register virtual mesh interface */
1465 ret = register_netdev(mesh_dev);
1466 if (ret) {
1467 lbs_pr_err("cannot register mshX virtual interface\n");
1468 goto err_free;
1471 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1472 if (ret)
1473 goto err_unregister;
1475 lbs_persist_config_init(mesh_dev);
1477 /* Everything successful */
1478 ret = 0;
1479 goto done;
1481 err_unregister:
1482 unregister_netdev(mesh_dev);
1484 err_free:
1485 free_netdev(mesh_dev);
1487 done:
1488 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1489 return ret;
1492 static void lbs_remove_mesh(struct lbs_private *priv)
1494 struct net_device *mesh_dev;
1497 mesh_dev = priv->mesh_dev;
1498 if (!mesh_dev)
1499 return;
1501 lbs_deb_enter(LBS_DEB_MESH);
1502 netif_stop_queue(mesh_dev);
1503 netif_carrier_off(mesh_dev);
1504 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1505 lbs_persist_config_remove(mesh_dev);
1506 unregister_netdev(mesh_dev);
1507 priv->mesh_dev = NULL;
1508 free_netdev(mesh_dev);
1509 lbs_deb_leave(LBS_DEB_MESH);
1513 * @brief This function finds the CFP in
1514 * region_cfp_table based on region and band parameter.
1516 * @param region The region code
1517 * @param band The band
1518 * @param cfp_no A pointer to CFP number
1519 * @return A pointer to CFP
1521 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, int *cfp_no)
1523 int i, end;
1525 lbs_deb_enter(LBS_DEB_MAIN);
1527 end = ARRAY_SIZE(region_cfp_table);
1529 for (i = 0; i < end ; i++) {
1530 lbs_deb_main("region_cfp_table[i].region=%d\n",
1531 region_cfp_table[i].region);
1532 if (region_cfp_table[i].region == region) {
1533 *cfp_no = region_cfp_table[i].cfp_no_BG;
1534 lbs_deb_leave(LBS_DEB_MAIN);
1535 return region_cfp_table[i].cfp_BG;
1539 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1540 return NULL;
1543 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1545 int ret = 0;
1546 int i = 0;
1548 struct chan_freq_power *cfp;
1549 int cfp_no;
1551 lbs_deb_enter(LBS_DEB_MAIN);
1553 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1555 cfp = lbs_get_region_cfp_table(region, &cfp_no);
1556 if (cfp != NULL) {
1557 priv->region_channel[i].nrcfp = cfp_no;
1558 priv->region_channel[i].CFP = cfp;
1559 } else {
1560 lbs_deb_main("wrong region code %#x in band B/G\n",
1561 region);
1562 ret = -1;
1563 goto out;
1565 priv->region_channel[i].valid = 1;
1566 priv->region_channel[i].region = region;
1567 priv->region_channel[i].band = band;
1568 i++;
1569 out:
1570 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1571 return ret;
1574 void lbs_queue_event(struct lbs_private *priv, u32 event)
1576 unsigned long flags;
1578 lbs_deb_enter(LBS_DEB_THREAD);
1579 spin_lock_irqsave(&priv->driver_lock, flags);
1581 if (priv->psstate == PS_STATE_SLEEP)
1582 priv->psstate = PS_STATE_AWAKE;
1584 __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof(u32));
1586 wake_up_interruptible(&priv->waitq);
1588 spin_unlock_irqrestore(&priv->driver_lock, flags);
1589 lbs_deb_leave(LBS_DEB_THREAD);
1591 EXPORT_SYMBOL_GPL(lbs_queue_event);
1593 void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
1595 lbs_deb_enter(LBS_DEB_THREAD);
1597 if (priv->psstate == PS_STATE_SLEEP)
1598 priv->psstate = PS_STATE_AWAKE;
1600 /* Swap buffers by flipping the response index */
1601 BUG_ON(resp_idx > 1);
1602 priv->resp_idx = resp_idx;
1604 wake_up_interruptible(&priv->waitq);
1606 lbs_deb_leave(LBS_DEB_THREAD);
1608 EXPORT_SYMBOL_GPL(lbs_notify_command_response);
1610 static int __init lbs_init_module(void)
1612 lbs_deb_enter(LBS_DEB_MAIN);
1613 memset(&confirm_sleep, 0, sizeof(confirm_sleep));
1614 confirm_sleep.hdr.command = cpu_to_le16(CMD_802_11_PS_MODE);
1615 confirm_sleep.hdr.size = cpu_to_le16(sizeof(confirm_sleep));
1616 confirm_sleep.action = cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
1617 lbs_debugfs_init();
1618 lbs_deb_leave(LBS_DEB_MAIN);
1619 return 0;
1622 static void __exit lbs_exit_module(void)
1624 lbs_deb_enter(LBS_DEB_MAIN);
1625 lbs_debugfs_remove();
1626 lbs_deb_leave(LBS_DEB_MAIN);
1630 * rtap interface support fuctions
1633 static int lbs_rtap_open(struct net_device *dev)
1635 /* Yes, _stop_ the queue. Because we don't support injection */
1636 lbs_deb_enter(LBS_DEB_MAIN);
1637 netif_carrier_off(dev);
1638 netif_stop_queue(dev);
1639 lbs_deb_leave(LBS_DEB_LEAVE);
1640 return 0;
1643 static int lbs_rtap_stop(struct net_device *dev)
1645 lbs_deb_enter(LBS_DEB_MAIN);
1646 lbs_deb_leave(LBS_DEB_MAIN);
1647 return 0;
1650 static netdev_tx_t lbs_rtap_hard_start_xmit(struct sk_buff *skb,
1651 struct net_device *dev)
1653 netif_stop_queue(dev);
1654 return NETDEV_TX_BUSY;
1657 static void lbs_remove_rtap(struct lbs_private *priv)
1659 lbs_deb_enter(LBS_DEB_MAIN);
1660 if (priv->rtap_net_dev == NULL)
1661 goto out;
1662 unregister_netdev(priv->rtap_net_dev);
1663 free_netdev(priv->rtap_net_dev);
1664 priv->rtap_net_dev = NULL;
1665 out:
1666 lbs_deb_leave(LBS_DEB_MAIN);
1669 static const struct net_device_ops rtap_netdev_ops = {
1670 .ndo_open = lbs_rtap_open,
1671 .ndo_stop = lbs_rtap_stop,
1672 .ndo_start_xmit = lbs_rtap_hard_start_xmit,
1675 static int lbs_add_rtap(struct lbs_private *priv)
1677 int ret = 0;
1678 struct net_device *rtap_dev;
1680 lbs_deb_enter(LBS_DEB_MAIN);
1681 if (priv->rtap_net_dev) {
1682 ret = -EPERM;
1683 goto out;
1686 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1687 if (rtap_dev == NULL) {
1688 ret = -ENOMEM;
1689 goto out;
1692 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1693 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1694 rtap_dev->netdev_ops = &rtap_netdev_ops;
1695 rtap_dev->ml_priv = priv;
1696 SET_NETDEV_DEV(rtap_dev, priv->dev->dev.parent);
1698 ret = register_netdev(rtap_dev);
1699 if (ret) {
1700 free_netdev(rtap_dev);
1701 goto out;
1703 priv->rtap_net_dev = rtap_dev;
1705 out:
1706 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1707 return ret;
1710 module_init(lbs_init_module);
1711 module_exit(lbs_exit_module);
1713 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1714 MODULE_AUTHOR("Marvell International Ltd.");
1715 MODULE_LICENSE("GPL");