2 * This file contains the major functions in WLAN
3 * driver. It includes init, exit, open, close and main
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>
14 #include <net/iw_handler.h>
15 #include <net/ieee80211.h>
26 #define DRIVER_RELEASE_VERSION "323.p0"
27 const char lbs_driver_version[] = "COMM-USB8388-" DRIVER_RELEASE_VERSION
34 /* Module parameters */
35 unsigned int lbs_debug;
36 EXPORT_SYMBOL_GPL(lbs_debug);
37 module_param_named(libertas_debug, lbs_debug, int, 0644);
40 #define LBS_TX_PWR_DEFAULT 20 /*100mW */
41 #define LBS_TX_PWR_US_DEFAULT 20 /*100mW */
42 #define LBS_TX_PWR_JP_DEFAULT 16 /*50mW */
43 #define LBS_TX_PWR_FR_DEFAULT 20 /*100mW */
44 #define LBS_TX_PWR_EMEA_DEFAULT 20 /*100mW */
46 /* Format { channel, frequency (MHz), maxtxpower } */
47 /* band: 'B/G', region: USA FCC/Canada IC */
48 static struct chan_freq_power channel_freq_power_US_BG[] = {
49 {1, 2412, LBS_TX_PWR_US_DEFAULT},
50 {2, 2417, LBS_TX_PWR_US_DEFAULT},
51 {3, 2422, LBS_TX_PWR_US_DEFAULT},
52 {4, 2427, LBS_TX_PWR_US_DEFAULT},
53 {5, 2432, LBS_TX_PWR_US_DEFAULT},
54 {6, 2437, LBS_TX_PWR_US_DEFAULT},
55 {7, 2442, LBS_TX_PWR_US_DEFAULT},
56 {8, 2447, LBS_TX_PWR_US_DEFAULT},
57 {9, 2452, LBS_TX_PWR_US_DEFAULT},
58 {10, 2457, LBS_TX_PWR_US_DEFAULT},
59 {11, 2462, LBS_TX_PWR_US_DEFAULT}
62 /* band: 'B/G', region: Europe ETSI */
63 static struct chan_freq_power channel_freq_power_EU_BG[] = {
64 {1, 2412, LBS_TX_PWR_EMEA_DEFAULT},
65 {2, 2417, LBS_TX_PWR_EMEA_DEFAULT},
66 {3, 2422, LBS_TX_PWR_EMEA_DEFAULT},
67 {4, 2427, LBS_TX_PWR_EMEA_DEFAULT},
68 {5, 2432, LBS_TX_PWR_EMEA_DEFAULT},
69 {6, 2437, LBS_TX_PWR_EMEA_DEFAULT},
70 {7, 2442, LBS_TX_PWR_EMEA_DEFAULT},
71 {8, 2447, LBS_TX_PWR_EMEA_DEFAULT},
72 {9, 2452, LBS_TX_PWR_EMEA_DEFAULT},
73 {10, 2457, LBS_TX_PWR_EMEA_DEFAULT},
74 {11, 2462, LBS_TX_PWR_EMEA_DEFAULT},
75 {12, 2467, LBS_TX_PWR_EMEA_DEFAULT},
76 {13, 2472, LBS_TX_PWR_EMEA_DEFAULT}
79 /* band: 'B/G', region: Spain */
80 static struct chan_freq_power channel_freq_power_SPN_BG[] = {
81 {10, 2457, LBS_TX_PWR_DEFAULT},
82 {11, 2462, LBS_TX_PWR_DEFAULT}
85 /* band: 'B/G', region: France */
86 static struct chan_freq_power channel_freq_power_FR_BG[] = {
87 {10, 2457, LBS_TX_PWR_FR_DEFAULT},
88 {11, 2462, LBS_TX_PWR_FR_DEFAULT},
89 {12, 2467, LBS_TX_PWR_FR_DEFAULT},
90 {13, 2472, LBS_TX_PWR_FR_DEFAULT}
93 /* band: 'B/G', region: Japan */
94 static struct chan_freq_power channel_freq_power_JPN_BG[] = {
95 {1, 2412, LBS_TX_PWR_JP_DEFAULT},
96 {2, 2417, LBS_TX_PWR_JP_DEFAULT},
97 {3, 2422, LBS_TX_PWR_JP_DEFAULT},
98 {4, 2427, LBS_TX_PWR_JP_DEFAULT},
99 {5, 2432, LBS_TX_PWR_JP_DEFAULT},
100 {6, 2437, LBS_TX_PWR_JP_DEFAULT},
101 {7, 2442, LBS_TX_PWR_JP_DEFAULT},
102 {8, 2447, LBS_TX_PWR_JP_DEFAULT},
103 {9, 2452, LBS_TX_PWR_JP_DEFAULT},
104 {10, 2457, LBS_TX_PWR_JP_DEFAULT},
105 {11, 2462, LBS_TX_PWR_JP_DEFAULT},
106 {12, 2467, LBS_TX_PWR_JP_DEFAULT},
107 {13, 2472, LBS_TX_PWR_JP_DEFAULT},
108 {14, 2484, LBS_TX_PWR_JP_DEFAULT}
112 * the structure for channel, frequency and power
114 struct region_cfp_table {
116 struct chan_freq_power *cfp_BG;
121 * the structure for the mapping between region and CFP
123 static struct region_cfp_table region_cfp_table[] = {
125 channel_freq_power_US_BG,
126 ARRAY_SIZE(channel_freq_power_US_BG),
129 {0x20, /*CANADA IC */
130 channel_freq_power_US_BG,
131 ARRAY_SIZE(channel_freq_power_US_BG),
134 {0x30, /*EU*/ channel_freq_power_EU_BG,
135 ARRAY_SIZE(channel_freq_power_EU_BG),
138 {0x31, /*SPAIN*/ channel_freq_power_SPN_BG,
139 ARRAY_SIZE(channel_freq_power_SPN_BG),
142 {0x32, /*FRANCE*/ channel_freq_power_FR_BG,
143 ARRAY_SIZE(channel_freq_power_FR_BG),
146 {0x40, /*JAPAN*/ channel_freq_power_JPN_BG,
147 ARRAY_SIZE(channel_freq_power_JPN_BG),
150 /*Add new region here */
154 * the table to keep region code
156 u16 lbs_region_code_to_index[MRVDRV_MAX_REGION_CODE] =
157 { 0x10, 0x20, 0x30, 0x31, 0x32, 0x40 };
160 * 802.11b/g supported bitrates (in 500Kb/s units)
162 u8 lbs_bg_rates[MAX_RATES] =
163 { 0x02, 0x04, 0x0b, 0x16, 0x0c, 0x12, 0x18, 0x24, 0x30, 0x48, 0x60, 0x6c,
167 * FW rate table. FW refers to rates by their index in this table, not by the
168 * rate value itself. Values of 0x00 are
169 * reserved positions.
171 static u8 fw_data_rates[MAX_RATES] =
172 { 0x02, 0x04, 0x0B, 0x16, 0x00, 0x0C, 0x12,
173 0x18, 0x24, 0x30, 0x48, 0x60, 0x6C, 0x00
177 * @brief use index to get the data rate
179 * @param idx The index of data rate
180 * @return data rate or 0
182 u32 lbs_fw_index_to_data_rate(u8 idx)
184 if (idx >= sizeof(fw_data_rates))
186 return fw_data_rates[idx];
190 * @brief use rate to get the index
192 * @param rate data rate
195 u8 lbs_data_rate_to_fw_index(u32 rate)
202 for (i = 0; i < sizeof(fw_data_rates); i++) {
203 if (rate == fw_data_rates[i])
210 * Attributes exported through sysfs
214 * @brief Get function for sysfs attribute anycast_mask
216 static ssize_t lbs_anycast_get(struct device *dev,
217 struct device_attribute *attr, char * buf)
219 struct lbs_private *priv = to_net_dev(dev)->priv;
220 struct cmd_ds_mesh_access mesh_access;
223 memset(&mesh_access, 0, sizeof(mesh_access));
225 ret = lbs_mesh_access(priv, CMD_ACT_MESH_GET_ANYCAST, &mesh_access);
229 return snprintf(buf, 12, "0x%X\n", le32_to_cpu(mesh_access.data[0]));
233 * @brief Set function for sysfs attribute anycast_mask
235 static ssize_t lbs_anycast_set(struct device *dev,
236 struct device_attribute *attr, const char * buf, size_t count)
238 struct lbs_private *priv = to_net_dev(dev)->priv;
239 struct cmd_ds_mesh_access mesh_access;
243 memset(&mesh_access, 0, sizeof(mesh_access));
244 sscanf(buf, "%x", &datum);
245 mesh_access.data[0] = cpu_to_le32(datum);
247 ret = lbs_mesh_access(priv, CMD_ACT_MESH_SET_ANYCAST, &mesh_access);
254 static int lbs_add_rtap(struct lbs_private *priv);
255 static void lbs_remove_rtap(struct lbs_private *priv);
256 static int lbs_add_mesh(struct lbs_private *priv);
257 static void lbs_remove_mesh(struct lbs_private *priv);
261 * Get function for sysfs attribute rtap
263 static ssize_t lbs_rtap_get(struct device *dev,
264 struct device_attribute *attr, char * buf)
266 struct lbs_private *priv = to_net_dev(dev)->priv;
267 return snprintf(buf, 5, "0x%X\n", priv->monitormode);
271 * Set function for sysfs attribute rtap
273 static ssize_t lbs_rtap_set(struct device *dev,
274 struct device_attribute *attr, const char * buf, size_t count)
277 struct lbs_private *priv = to_net_dev(dev)->priv;
279 sscanf(buf, "%x", &monitor_mode);
280 if (monitor_mode != LBS_MONITOR_OFF) {
281 if(priv->monitormode == monitor_mode)
283 if (priv->monitormode == LBS_MONITOR_OFF) {
284 if (priv->infra_open || priv->mesh_open)
286 if (priv->mode == IW_MODE_INFRA)
287 lbs_send_deauthentication(priv);
288 else if (priv->mode == IW_MODE_ADHOC)
289 lbs_stop_adhoc_network(priv);
292 priv->monitormode = monitor_mode;
296 if (priv->monitormode == LBS_MONITOR_OFF)
298 priv->monitormode = LBS_MONITOR_OFF;
299 lbs_remove_rtap(priv);
301 if (priv->currenttxskb) {
302 dev_kfree_skb_any(priv->currenttxskb);
303 priv->currenttxskb = NULL;
306 /* Wake queues, command thread, etc. */
307 lbs_host_to_card_done(priv);
310 lbs_prepare_and_send_command(priv,
311 CMD_802_11_MONITOR_MODE, CMD_ACT_SET,
312 CMD_OPTION_WAITFORRSP, 0, &priv->monitormode);
317 * lbs_rtap attribute to be exported per ethX interface
318 * through sysfs (/sys/class/net/ethX/lbs_rtap)
320 static DEVICE_ATTR(lbs_rtap, 0644, lbs_rtap_get, lbs_rtap_set );
323 * Get function for sysfs attribute mesh
325 static ssize_t lbs_mesh_get(struct device *dev,
326 struct device_attribute *attr, char * buf)
328 struct lbs_private *priv = to_net_dev(dev)->priv;
329 return snprintf(buf, 5, "0x%X\n", !!priv->mesh_dev);
333 * Set function for sysfs attribute mesh
335 static ssize_t lbs_mesh_set(struct device *dev,
336 struct device_attribute *attr, const char * buf, size_t count)
338 struct lbs_private *priv = to_net_dev(dev)->priv;
342 sscanf(buf, "%x", &enable);
344 if (enable == !!priv->mesh_dev)
347 ret = lbs_mesh_config(priv, enable, priv->curbssparams.channel);
354 lbs_remove_mesh(priv);
360 * lbs_mesh attribute to be exported per ethX interface
361 * through sysfs (/sys/class/net/ethX/lbs_mesh)
363 static DEVICE_ATTR(lbs_mesh, 0644, lbs_mesh_get, lbs_mesh_set);
366 * anycast_mask attribute to be exported per mshX interface
367 * through sysfs (/sys/class/net/mshX/anycast_mask)
369 static DEVICE_ATTR(anycast_mask, 0644, lbs_anycast_get, lbs_anycast_set);
371 static struct attribute *lbs_mesh_sysfs_entries[] = {
372 &dev_attr_anycast_mask.attr,
376 static struct attribute_group lbs_mesh_attr_group = {
377 .attrs = lbs_mesh_sysfs_entries,
381 * @brief This function opens the ethX or mshX interface
383 * @param dev A pointer to net_device structure
384 * @return 0 or -EBUSY if monitor mode active
386 static int lbs_dev_open(struct net_device *dev)
388 struct lbs_private *priv = (struct lbs_private *) dev->priv ;
391 spin_lock_irq(&priv->driver_lock);
393 if (priv->monitormode != LBS_MONITOR_OFF) {
398 if (dev == priv->mesh_dev) {
400 priv->mesh_connect_status = LBS_CONNECTED;
401 netif_carrier_on(dev);
403 priv->infra_open = 1;
405 if (priv->connect_status == LBS_CONNECTED)
406 netif_carrier_on(dev);
408 netif_carrier_off(dev);
411 if (!priv->tx_pending_len)
412 netif_wake_queue(dev);
415 spin_unlock_irq(&priv->driver_lock);
420 * @brief This function closes the mshX interface
422 * @param dev A pointer to net_device structure
425 static int lbs_mesh_stop(struct net_device *dev)
427 struct lbs_private *priv = (struct lbs_private *) (dev->priv);
429 spin_lock_irq(&priv->driver_lock);
432 priv->mesh_connect_status = LBS_DISCONNECTED;
434 netif_stop_queue(dev);
435 netif_carrier_off(dev);
437 spin_unlock_irq(&priv->driver_lock);
442 * @brief This function closes the ethX interface
444 * @param dev A pointer to net_device structure
447 static int lbs_eth_stop(struct net_device *dev)
449 struct lbs_private *priv = (struct lbs_private *) dev->priv;
451 spin_lock_irq(&priv->driver_lock);
453 priv->infra_open = 0;
455 netif_stop_queue(dev);
457 spin_unlock_irq(&priv->driver_lock);
461 static void lbs_tx_timeout(struct net_device *dev)
463 struct lbs_private *priv = (struct lbs_private *) dev->priv;
465 lbs_deb_enter(LBS_DEB_TX);
467 lbs_pr_err("tx watch dog timeout\n");
469 dev->trans_start = jiffies;
471 if (priv->currenttxskb) {
472 priv->eventcause = 0x01000000;
473 lbs_send_tx_feedback(priv);
475 /* XX: Shouldn't we also call into the hw-specific driver
476 to kick it somehow? */
477 lbs_host_to_card_done(priv);
479 lbs_deb_leave(LBS_DEB_TX);
482 void lbs_host_to_card_done(struct lbs_private *priv)
486 spin_lock_irqsave(&priv->driver_lock, flags);
488 priv->dnld_sent = DNLD_RES_RECEIVED;
490 /* Wake main thread if commands are pending */
491 if (!priv->cur_cmd || priv->tx_pending_len > 0)
492 wake_up_interruptible(&priv->waitq);
494 spin_unlock_irqrestore(&priv->driver_lock, flags);
496 EXPORT_SYMBOL_GPL(lbs_host_to_card_done);
499 * @brief This function returns the network statistics
501 * @param dev A pointer to struct lbs_private structure
502 * @return A pointer to net_device_stats structure
504 static struct net_device_stats *lbs_get_stats(struct net_device *dev)
506 struct lbs_private *priv = (struct lbs_private *) dev->priv;
511 static int lbs_set_mac_address(struct net_device *dev, void *addr)
514 struct lbs_private *priv = (struct lbs_private *) dev->priv;
515 struct sockaddr *phwaddr = addr;
517 lbs_deb_enter(LBS_DEB_NET);
519 /* In case it was called from the mesh device */
522 memset(priv->current_addr, 0, ETH_ALEN);
524 /* dev->dev_addr is 8 bytes */
525 lbs_deb_hex(LBS_DEB_NET, "dev->dev_addr", dev->dev_addr, ETH_ALEN);
527 lbs_deb_hex(LBS_DEB_NET, "addr", phwaddr->sa_data, ETH_ALEN);
528 memcpy(priv->current_addr, phwaddr->sa_data, ETH_ALEN);
530 ret = lbs_prepare_and_send_command(priv, CMD_802_11_MAC_ADDRESS,
532 CMD_OPTION_WAITFORRSP, 0, NULL);
535 lbs_deb_net("set MAC address failed\n");
540 lbs_deb_hex(LBS_DEB_NET, "priv->macaddr", priv->current_addr, ETH_ALEN);
541 memcpy(dev->dev_addr, priv->current_addr, ETH_ALEN);
543 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
546 lbs_deb_leave_args(LBS_DEB_NET, "ret %d", ret);
550 static int lbs_copy_multicast_address(struct lbs_private *priv,
551 struct net_device *dev)
554 struct dev_mc_list *mcptr = dev->mc_list;
556 for (i = 0; i < dev->mc_count; i++) {
557 memcpy(&priv->multicastlist[i], mcptr->dmi_addr, ETH_ALEN);
565 static void lbs_set_multicast_list(struct net_device *dev)
567 struct lbs_private *priv = dev->priv;
569 DECLARE_MAC_BUF(mac);
571 lbs_deb_enter(LBS_DEB_NET);
573 oldpacketfilter = priv->currentpacketfilter;
575 if (dev->flags & IFF_PROMISC) {
576 lbs_deb_net("enable promiscuous mode\n");
577 priv->currentpacketfilter |=
578 CMD_ACT_MAC_PROMISCUOUS_ENABLE;
579 priv->currentpacketfilter &=
580 ~(CMD_ACT_MAC_ALL_MULTICAST_ENABLE |
581 CMD_ACT_MAC_MULTICAST_ENABLE);
584 priv->currentpacketfilter &=
585 ~CMD_ACT_MAC_PROMISCUOUS_ENABLE;
587 if (dev->flags & IFF_ALLMULTI || dev->mc_count >
588 MRVDRV_MAX_MULTICAST_LIST_SIZE) {
589 lbs_deb_net( "enabling all multicast\n");
590 priv->currentpacketfilter |=
591 CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
592 priv->currentpacketfilter &=
593 ~CMD_ACT_MAC_MULTICAST_ENABLE;
595 priv->currentpacketfilter &=
596 ~CMD_ACT_MAC_ALL_MULTICAST_ENABLE;
598 if (!dev->mc_count) {
599 lbs_deb_net("no multicast addresses, "
600 "disabling multicast\n");
601 priv->currentpacketfilter &=
602 ~CMD_ACT_MAC_MULTICAST_ENABLE;
606 priv->currentpacketfilter |=
607 CMD_ACT_MAC_MULTICAST_ENABLE;
609 priv->nr_of_multicastmacaddr =
610 lbs_copy_multicast_address(priv, dev);
612 lbs_deb_net("multicast addresses: %d\n",
615 for (i = 0; i < dev->mc_count; i++) {
616 lbs_deb_net("Multicast address %d:%s\n",
618 priv->multicastlist[i]));
620 /* send multicast addresses to firmware */
621 lbs_prepare_and_send_command(priv,
622 CMD_MAC_MULTICAST_ADR,
629 if (priv->currentpacketfilter != oldpacketfilter) {
630 lbs_set_mac_packet_filter(priv);
633 lbs_deb_leave(LBS_DEB_NET);
637 * @brief This function handles the major jobs in the LBS driver.
638 * It handles all events generated by firmware, RX data received
639 * from firmware and TX data sent from kernel.
641 * @param data A pointer to lbs_thread structure
644 static int lbs_thread(void *data)
646 struct net_device *dev = data;
647 struct lbs_private *priv = dev->priv;
651 lbs_deb_enter(LBS_DEB_THREAD);
653 init_waitqueue_entry(&wait, current);
658 lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
659 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
661 add_wait_queue(&priv->waitq, &wait);
662 set_current_state(TASK_INTERRUPTIBLE);
663 spin_lock_irq(&priv->driver_lock);
665 if (kthread_should_stop())
666 shouldsleep = 0; /* Bye */
667 else if (priv->surpriseremoved)
668 shouldsleep = 1; /* We need to wait until we're _told_ to die */
669 else if (priv->psstate == PS_STATE_SLEEP)
670 shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
671 else if (priv->intcounter)
672 shouldsleep = 0; /* Interrupt pending. Deal with it now */
673 else if (!priv->fw_ready)
674 shouldsleep = 1; /* Firmware not ready. We're waiting for it */
675 else if (priv->dnld_sent)
676 shouldsleep = 1; /* Something is en route to the device already */
677 else if (priv->tx_pending_len > 0)
678 shouldsleep = 0; /* We've a packet to send */
679 else if (priv->cur_cmd)
680 shouldsleep = 1; /* Can't send a command; one already running */
681 else if (!list_empty(&priv->cmdpendingq))
682 shouldsleep = 0; /* We have a command to send */
684 shouldsleep = 1; /* No command */
687 lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
688 priv->connect_status, priv->intcounter,
689 priv->psmode, priv->psstate);
690 spin_unlock_irq(&priv->driver_lock);
693 spin_unlock_irq(&priv->driver_lock);
695 lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
696 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
698 set_current_state(TASK_RUNNING);
699 remove_wait_queue(&priv->waitq, &wait);
701 lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
702 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
704 if (kthread_should_stop()) {
705 lbs_deb_thread("main-thread: break from main thread\n");
709 if (priv->surpriseremoved) {
710 lbs_deb_thread("adapter removed; waiting to die...\n");
714 spin_lock_irq(&priv->driver_lock);
716 if (priv->intcounter) {
719 priv->intcounter = 0;
720 int_status = priv->hw_get_int_status(priv, &ireg);
723 lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
724 spin_unlock_irq(&priv->driver_lock);
727 priv->hisregcpy |= ireg;
730 lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
731 priv->intcounter, priv->currenttxskb, priv->dnld_sent);
733 /* command response? */
734 if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
735 lbs_deb_thread("main-thread: cmd response ready\n");
737 priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
738 spin_unlock_irq(&priv->driver_lock);
739 lbs_process_rx_command(priv);
740 spin_lock_irq(&priv->driver_lock);
744 if (priv->hisregcpy & MRVDRV_CARDEVENT) {
745 lbs_deb_thread("main-thread: Card Event Activity\n");
747 priv->hisregcpy &= ~MRVDRV_CARDEVENT;
749 if (priv->hw_read_event_cause(priv)) {
750 lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
751 spin_unlock_irq(&priv->driver_lock);
754 spin_unlock_irq(&priv->driver_lock);
755 lbs_process_event(priv);
757 spin_unlock_irq(&priv->driver_lock);
762 /* Check if we need to confirm Sleep Request received previously */
763 if (priv->psstate == PS_STATE_PRE_SLEEP &&
764 !priv->dnld_sent && !priv->cur_cmd) {
765 if (priv->connect_status == LBS_CONNECTED) {
766 lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
767 priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
769 lbs_ps_confirm_sleep(priv, (u16) priv->psmode);
771 /* workaround for firmware sending
772 * deauth/linkloss event immediately
773 * after sleep request; remove this
774 * after firmware fixes it
776 priv->psstate = PS_STATE_AWAKE;
777 lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
781 /* The PS state is changed during processing of Sleep Request
784 if ((priv->psstate == PS_STATE_SLEEP) ||
785 (priv->psstate == PS_STATE_PRE_SLEEP))
788 /* Execute the next command */
789 if (!priv->dnld_sent && !priv->cur_cmd)
790 lbs_execute_next_command(priv);
792 /* Wake-up command waiters which can't sleep in
793 * lbs_prepare_and_send_command
795 if (!list_empty(&priv->cmdpendingq))
796 wake_up_all(&priv->cmd_pending);
798 spin_lock_irq(&priv->driver_lock);
799 if (!priv->dnld_sent && priv->tx_pending_len > 0) {
800 int ret = priv->hw_host_to_card(priv, MVMS_DAT,
801 priv->tx_pending_buf,
802 priv->tx_pending_len);
804 lbs_deb_tx("host_to_card failed %d\n", ret);
805 priv->dnld_sent = DNLD_RES_RECEIVED;
807 priv->tx_pending_len = 0;
808 if (!priv->currenttxskb) {
809 /* We can wake the queues immediately if we aren't
810 waiting for TX feedback */
811 if (priv->connect_status == LBS_CONNECTED)
812 netif_wake_queue(priv->dev);
813 if (priv->mesh_dev &&
814 priv->mesh_connect_status == LBS_CONNECTED)
815 netif_wake_queue(priv->mesh_dev);
818 spin_unlock_irq(&priv->driver_lock);
821 del_timer(&priv->command_timer);
822 wake_up_all(&priv->cmd_pending);
824 lbs_deb_leave(LBS_DEB_THREAD);
828 static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
829 struct cmd_header *cmd)
831 lbs_deb_fw("HOST_SLEEP_ACTIVATE succeeded\n");
833 netif_device_detach(priv->dev);
835 netif_device_detach(priv->mesh_dev);
842 int lbs_suspend(struct lbs_private *priv)
844 struct cmd_header cmd;
847 if (priv->wol_criteria == 0xffffffff) {
848 lbs_pr_info("Suspend attempt without configuring wake params!\n");
852 memset(&cmd, 0, sizeof(cmd));
854 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
855 sizeof(cmd), lbs_suspend_callback, 0);
857 lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
861 EXPORT_SYMBOL_GPL(lbs_suspend);
863 int lbs_resume(struct lbs_private *priv)
867 /* Firmware doesn't seem to give us RX packets any more
868 until we send it some command. Might as well update */
869 lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
872 netif_device_attach(priv->dev);
874 netif_device_attach(priv->mesh_dev);
878 EXPORT_SYMBOL_GPL(lbs_resume);
881 * @brief This function downloads firmware image, gets
882 * HW spec from firmware and set basic parameters to
885 * @param priv A pointer to struct lbs_private structure
888 static int lbs_setup_firmware(struct lbs_private *priv)
892 lbs_deb_enter(LBS_DEB_FW);
895 * Read MAC address from HW
897 memset(priv->current_addr, 0xff, ETH_ALEN);
898 ret = lbs_update_hw_spec(priv);
904 lbs_set_mac_packet_filter(priv);
906 ret = lbs_get_data_rate(priv);
914 lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
919 * This function handles the timeout of command sending.
920 * It will re-send the same command again.
922 static void command_timer_fn(unsigned long data)
924 struct lbs_private *priv = (struct lbs_private *)data;
925 struct cmd_ctrl_node *node;
928 node = priv->cur_cmd;
930 lbs_deb_fw("ptempnode empty\n");
935 lbs_deb_fw("cmd is NULL\n");
939 lbs_pr_info("command %x timed out\n", le16_to_cpu(node->cmdbuf->command));
944 spin_lock_irqsave(&priv->driver_lock, flags);
945 priv->cur_cmd = NULL;
946 spin_unlock_irqrestore(&priv->driver_lock, flags);
948 lbs_deb_fw("re-sending same command because of timeout\n");
949 lbs_queue_cmd(priv, node, 0);
951 wake_up_interruptible(&priv->waitq);
956 static int lbs_init_adapter(struct lbs_private *priv)
961 /* Allocate buffer to store the BSSID list */
962 bufsize = MAX_NETWORK_COUNT * sizeof(struct bss_descriptor);
963 priv->networks = kzalloc(bufsize, GFP_KERNEL);
964 if (!priv->networks) {
965 lbs_pr_err("Out of memory allocating beacons\n");
970 /* Initialize scan result lists */
971 INIT_LIST_HEAD(&priv->network_free_list);
972 INIT_LIST_HEAD(&priv->network_list);
973 for (i = 0; i < MAX_NETWORK_COUNT; i++) {
974 list_add_tail(&priv->networks[i].list,
975 &priv->network_free_list);
978 priv->lbs_ps_confirm_sleep.seqnum = cpu_to_le16(++priv->seqnum);
979 priv->lbs_ps_confirm_sleep.command =
980 cpu_to_le16(CMD_802_11_PS_MODE);
981 priv->lbs_ps_confirm_sleep.size =
982 cpu_to_le16(sizeof(struct PS_CMD_ConfirmSleep));
983 priv->lbs_ps_confirm_sleep.action =
984 cpu_to_le16(CMD_SUBCMD_SLEEP_CONFIRMED);
986 memset(priv->current_addr, 0xff, ETH_ALEN);
988 priv->connect_status = LBS_DISCONNECTED;
989 priv->mesh_connect_status = LBS_DISCONNECTED;
990 priv->secinfo.auth_mode = IW_AUTH_ALG_OPEN_SYSTEM;
991 priv->mode = IW_MODE_INFRA;
992 priv->curbssparams.channel = DEFAULT_AD_HOC_CHANNEL;
993 priv->currentpacketfilter = CMD_ACT_MAC_RX_ON | CMD_ACT_MAC_TX_ON;
994 priv->radioon = RADIO_ON;
996 priv->capability = WLAN_CAPABILITY_SHORT_PREAMBLE;
997 priv->psmode = LBS802_11POWERMODECAM;
998 priv->psstate = PS_STATE_FULL_POWER;
1000 mutex_init(&priv->lock);
1002 setup_timer(&priv->command_timer, command_timer_fn,
1003 (unsigned long)priv);
1005 INIT_LIST_HEAD(&priv->cmdfreeq);
1006 INIT_LIST_HEAD(&priv->cmdpendingq);
1008 spin_lock_init(&priv->driver_lock);
1009 init_waitqueue_head(&priv->cmd_pending);
1011 /* Allocate the command buffers */
1012 if (lbs_allocate_cmd_buffer(priv)) {
1013 lbs_pr_err("Out of memory allocating command buffers\n");
1021 static void lbs_free_adapter(struct lbs_private *priv)
1023 lbs_deb_fw("free command buffer\n");
1024 lbs_free_cmd_buffer(priv);
1026 lbs_deb_fw("free command_timer\n");
1027 del_timer(&priv->command_timer);
1029 lbs_deb_fw("free scan results table\n");
1030 kfree(priv->networks);
1031 priv->networks = NULL;
1035 * @brief This function adds the card. it will probe the
1036 * card, allocate the lbs_priv and initialize the device.
1038 * @param card A pointer to card
1039 * @return A pointer to struct lbs_private structure
1041 struct lbs_private *lbs_add_card(void *card, struct device *dmdev)
1043 struct net_device *dev = NULL;
1044 struct lbs_private *priv = NULL;
1046 lbs_deb_enter(LBS_DEB_NET);
1048 /* Allocate an Ethernet device and register it */
1049 dev = alloc_etherdev(sizeof(struct lbs_private));
1051 lbs_pr_err("init ethX device failed\n");
1056 if (lbs_init_adapter(priv)) {
1057 lbs_pr_err("failed to initialize adapter structure.\n");
1058 goto err_init_adapter;
1063 priv->mesh_open = 0;
1064 priv->infra_open = 0;
1066 /* Setup the OS Interface to our functions */
1067 dev->open = lbs_dev_open;
1068 dev->hard_start_xmit = lbs_hard_start_xmit;
1069 dev->stop = lbs_eth_stop;
1070 dev->set_mac_address = lbs_set_mac_address;
1071 dev->tx_timeout = lbs_tx_timeout;
1072 dev->get_stats = lbs_get_stats;
1073 dev->watchdog_timeo = 5 * HZ;
1074 dev->ethtool_ops = &lbs_ethtool_ops;
1076 dev->wireless_handlers = (struct iw_handler_def *)&lbs_handler_def;
1078 dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
1079 dev->set_multicast_list = lbs_set_multicast_list;
1081 SET_NETDEV_DEV(dev, dmdev);
1083 priv->rtap_net_dev = NULL;
1085 lbs_deb_thread("Starting main thread...\n");
1086 init_waitqueue_head(&priv->waitq);
1087 priv->main_thread = kthread_run(lbs_thread, dev, "lbs_main");
1088 if (IS_ERR(priv->main_thread)) {
1089 lbs_deb_thread("Error creating main thread.\n");
1090 goto err_init_adapter;
1093 priv->work_thread = create_singlethread_workqueue("lbs_worker");
1094 INIT_DELAYED_WORK(&priv->assoc_work, lbs_association_worker);
1095 INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
1096 INIT_WORK(&priv->sync_channel, lbs_sync_channel);
1098 sprintf(priv->mesh_ssid, "mesh");
1099 priv->mesh_ssid_len = 4;
1101 priv->wol_criteria = 0xffffffff;
1102 priv->wol_gpio = 0xff;
1107 lbs_free_adapter(priv);
1112 lbs_deb_leave_args(LBS_DEB_NET, "priv %p", priv);
1115 EXPORT_SYMBOL_GPL(lbs_add_card);
1118 int lbs_remove_card(struct lbs_private *priv)
1120 struct net_device *dev = priv->dev;
1121 union iwreq_data wrqu;
1123 lbs_deb_enter(LBS_DEB_MAIN);
1125 lbs_remove_mesh(priv);
1126 lbs_remove_rtap(priv);
1130 cancel_delayed_work(&priv->scan_work);
1131 cancel_delayed_work(&priv->assoc_work);
1132 destroy_workqueue(priv->work_thread);
1134 if (priv->psmode == LBS802_11POWERMODEMAX_PSP) {
1135 priv->psmode = LBS802_11POWERMODECAM;
1136 lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP);
1139 memset(wrqu.ap_addr.sa_data, 0xaa, ETH_ALEN);
1140 wrqu.ap_addr.sa_family = ARPHRD_ETHER;
1141 wireless_send_event(priv->dev, SIOCGIWAP, &wrqu, NULL);
1143 /* Stop the thread servicing the interrupts */
1144 priv->surpriseremoved = 1;
1145 kthread_stop(priv->main_thread);
1147 lbs_free_adapter(priv);
1152 lbs_deb_leave(LBS_DEB_MAIN);
1155 EXPORT_SYMBOL_GPL(lbs_remove_card);
1158 int lbs_start_card(struct lbs_private *priv)
1160 struct net_device *dev = priv->dev;
1163 lbs_deb_enter(LBS_DEB_MAIN);
1165 /* poke the firmware */
1166 ret = lbs_setup_firmware(priv);
1173 if (register_netdev(dev)) {
1174 lbs_pr_err("cannot register ethX device\n");
1177 if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
1178 lbs_pr_err("cannot register lbs_rtap attribute\n");
1180 /* Enable mesh, if supported, and work out which TLV it uses.
1181 0x100 + 291 is an unofficial value used in 5.110.20.pXX
1182 0x100 + 37 is the official value used in 5.110.21.pXX
1183 but we check them in that order because 20.pXX doesn't
1184 give an error -- it just silently fails. */
1186 /* 5.110.20.pXX firmware will fail the command if the channel
1187 doesn't match the existing channel. But only if the TLV
1188 is correct. If the channel is wrong, _BOTH_ versions will
1189 give an error to 0x100+291, and allow 0x100+37 to succeed.
1190 It's just that 5.110.20.pXX will not have done anything
1193 lbs_update_channel(priv);
1194 priv->mesh_tlv = 0x100 + 291;
1195 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
1196 priv->mesh_tlv = 0x100 + 37;
1197 if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
1200 if (priv->mesh_tlv) {
1203 if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
1204 lbs_pr_err("cannot register lbs_mesh attribute\n");
1207 lbs_debugfs_init_one(priv, dev);
1209 lbs_pr_info("%s: Marvell WLAN 802.11 adapter\n", dev->name);
1214 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1217 EXPORT_SYMBOL_GPL(lbs_start_card);
1220 int lbs_stop_card(struct lbs_private *priv)
1222 struct net_device *dev = priv->dev;
1224 struct cmd_ctrl_node *cmdnode;
1225 unsigned long flags;
1227 lbs_deb_enter(LBS_DEB_MAIN);
1229 netif_stop_queue(priv->dev);
1230 netif_carrier_off(priv->dev);
1232 lbs_debugfs_remove_one(priv);
1233 device_remove_file(&dev->dev, &dev_attr_lbs_rtap);
1235 device_remove_file(&dev->dev, &dev_attr_lbs_mesh);
1237 /* Flush pending command nodes */
1238 spin_lock_irqsave(&priv->driver_lock, flags);
1239 list_for_each_entry(cmdnode, &priv->cmdpendingq, list) {
1240 cmdnode->cmdwaitqwoken = 1;
1241 wake_up_interruptible(&cmdnode->cmdwait_q);
1243 spin_unlock_irqrestore(&priv->driver_lock, flags);
1245 unregister_netdev(dev);
1247 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1250 EXPORT_SYMBOL_GPL(lbs_stop_card);
1254 * @brief This function adds mshX interface
1256 * @param priv A pointer to the struct lbs_private structure
1257 * @return 0 if successful, -X otherwise
1259 static int lbs_add_mesh(struct lbs_private *priv)
1261 struct net_device *mesh_dev = NULL;
1264 lbs_deb_enter(LBS_DEB_MESH);
1266 /* Allocate a virtual mesh device */
1267 if (!(mesh_dev = alloc_netdev(0, "msh%d", ether_setup))) {
1268 lbs_deb_mesh("init mshX device failed\n");
1272 mesh_dev->priv = priv;
1273 priv->mesh_dev = mesh_dev;
1275 mesh_dev->open = lbs_dev_open;
1276 mesh_dev->hard_start_xmit = lbs_hard_start_xmit;
1277 mesh_dev->stop = lbs_mesh_stop;
1278 mesh_dev->get_stats = lbs_get_stats;
1279 mesh_dev->set_mac_address = lbs_set_mac_address;
1280 mesh_dev->ethtool_ops = &lbs_ethtool_ops;
1281 memcpy(mesh_dev->dev_addr, priv->dev->dev_addr,
1282 sizeof(priv->dev->dev_addr));
1284 SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent);
1287 mesh_dev->wireless_handlers = (struct iw_handler_def *)&mesh_handler_def;
1289 /* Register virtual mesh interface */
1290 ret = register_netdev(mesh_dev);
1292 lbs_pr_err("cannot register mshX virtual interface\n");
1296 ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1298 goto err_unregister;
1300 /* Everything successful */
1305 unregister_netdev(mesh_dev);
1308 free_netdev(mesh_dev);
1311 lbs_deb_leave_args(LBS_DEB_MESH, "ret %d", ret);
1314 EXPORT_SYMBOL_GPL(lbs_add_mesh);
1317 static void lbs_remove_mesh(struct lbs_private *priv)
1319 struct net_device *mesh_dev;
1321 lbs_deb_enter(LBS_DEB_MAIN);
1326 mesh_dev = priv->mesh_dev;
1330 netif_stop_queue(mesh_dev);
1331 netif_carrier_off(priv->mesh_dev);
1333 sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group);
1334 unregister_netdev(mesh_dev);
1336 priv->mesh_dev = NULL;
1337 free_netdev(mesh_dev);
1340 lbs_deb_leave(LBS_DEB_MAIN);
1342 EXPORT_SYMBOL_GPL(lbs_remove_mesh);
1345 * @brief This function finds the CFP in
1346 * region_cfp_table based on region and band parameter.
1348 * @param region The region code
1349 * @param band The band
1350 * @param cfp_no A pointer to CFP number
1351 * @return A pointer to CFP
1353 struct chan_freq_power *lbs_get_region_cfp_table(u8 region, u8 band, int *cfp_no)
1357 lbs_deb_enter(LBS_DEB_MAIN);
1359 end = ARRAY_SIZE(region_cfp_table);
1361 for (i = 0; i < end ; i++) {
1362 lbs_deb_main("region_cfp_table[i].region=%d\n",
1363 region_cfp_table[i].region);
1364 if (region_cfp_table[i].region == region) {
1365 *cfp_no = region_cfp_table[i].cfp_no_BG;
1366 lbs_deb_leave(LBS_DEB_MAIN);
1367 return region_cfp_table[i].cfp_BG;
1371 lbs_deb_leave_args(LBS_DEB_MAIN, "ret NULL");
1375 int lbs_set_regiontable(struct lbs_private *priv, u8 region, u8 band)
1380 struct chan_freq_power *cfp;
1383 lbs_deb_enter(LBS_DEB_MAIN);
1385 memset(priv->region_channel, 0, sizeof(priv->region_channel));
1388 cfp = lbs_get_region_cfp_table(region, band, &cfp_no);
1390 priv->region_channel[i].nrcfp = cfp_no;
1391 priv->region_channel[i].CFP = cfp;
1393 lbs_deb_main("wrong region code %#x in band B/G\n",
1398 priv->region_channel[i].valid = 1;
1399 priv->region_channel[i].region = region;
1400 priv->region_channel[i].band = band;
1404 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1409 * @brief This function handles the interrupt. it will change PS
1410 * state if applicable. it will wake up main_thread to handle
1411 * the interrupt event as well.
1413 * @param dev A pointer to net_device structure
1416 void lbs_interrupt(struct lbs_private *priv)
1418 lbs_deb_enter(LBS_DEB_THREAD);
1420 lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
1422 if (!spin_is_locked(&priv->driver_lock)) {
1423 printk(KERN_CRIT "%s called without driver_lock held\n", __func__);
1429 if (priv->psstate == PS_STATE_SLEEP)
1430 priv->psstate = PS_STATE_AWAKE;
1432 wake_up_interruptible(&priv->waitq);
1434 lbs_deb_leave(LBS_DEB_THREAD);
1436 EXPORT_SYMBOL_GPL(lbs_interrupt);
1438 int lbs_reset_device(struct lbs_private *priv)
1442 lbs_deb_enter(LBS_DEB_MAIN);
1443 ret = lbs_prepare_and_send_command(priv, CMD_802_11_RESET,
1444 CMD_ACT_HALT, 0, 0, NULL);
1445 msleep_interruptible(10);
1447 lbs_deb_leave_args(LBS_DEB_MAIN, "ret %d", ret);
1450 EXPORT_SYMBOL_GPL(lbs_reset_device);
1452 static int __init lbs_init_module(void)
1454 lbs_deb_enter(LBS_DEB_MAIN);
1456 lbs_deb_leave(LBS_DEB_MAIN);
1460 static void __exit lbs_exit_module(void)
1462 lbs_deb_enter(LBS_DEB_MAIN);
1464 lbs_debugfs_remove();
1466 lbs_deb_leave(LBS_DEB_MAIN);
1470 * rtap interface support fuctions
1473 static int lbs_rtap_open(struct net_device *dev)
1475 /* Yes, _stop_ the queue. Because we don't support injection */
1476 netif_carrier_off(dev);
1477 netif_stop_queue(dev);
1481 static int lbs_rtap_stop(struct net_device *dev)
1486 static int lbs_rtap_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
1488 netif_stop_queue(dev);
1489 return NETDEV_TX_BUSY;
1492 static struct net_device_stats *lbs_rtap_get_stats(struct net_device *dev)
1494 struct lbs_private *priv = dev->priv;
1495 return &priv->stats;
1499 static void lbs_remove_rtap(struct lbs_private *priv)
1501 if (priv->rtap_net_dev == NULL)
1503 unregister_netdev(priv->rtap_net_dev);
1504 free_netdev(priv->rtap_net_dev);
1505 priv->rtap_net_dev = NULL;
1508 static int lbs_add_rtap(struct lbs_private *priv)
1511 struct net_device *rtap_dev;
1513 if (priv->rtap_net_dev)
1516 rtap_dev = alloc_netdev(0, "rtap%d", ether_setup);
1517 if (rtap_dev == NULL)
1520 memcpy(rtap_dev->dev_addr, priv->current_addr, ETH_ALEN);
1521 rtap_dev->type = ARPHRD_IEEE80211_RADIOTAP;
1522 rtap_dev->open = lbs_rtap_open;
1523 rtap_dev->stop = lbs_rtap_stop;
1524 rtap_dev->get_stats = lbs_rtap_get_stats;
1525 rtap_dev->hard_start_xmit = lbs_rtap_hard_start_xmit;
1526 rtap_dev->set_multicast_list = lbs_set_multicast_list;
1527 rtap_dev->priv = priv;
1529 rc = register_netdev(rtap_dev);
1531 free_netdev(rtap_dev);
1534 priv->rtap_net_dev = rtap_dev;
1540 module_init(lbs_init_module);
1541 module_exit(lbs_exit_module);
1543 MODULE_DESCRIPTION("Libertas WLAN Driver Library");
1544 MODULE_AUTHOR("Marvell International Ltd.");
1545 MODULE_LICENSE("GPL");