diff options
Diffstat (limited to 'drivers/net/wireless/intersil/p54/main.c')
| -rw-r--r-- | drivers/net/wireless/intersil/p54/main.c | 867 |
1 files changed, 867 insertions, 0 deletions
diff --git a/drivers/net/wireless/intersil/p54/main.c b/drivers/net/wireless/intersil/p54/main.c new file mode 100644 index 0000000..7805864 --- /dev/null +++ b/drivers/net/wireless/intersil/p54/main.c @@ -0,0 +1,867 @@ +/* + * mac80211 glue code for mac80211 Prism54 drivers + * + * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net> + * Copyright (c) 2007-2009, Christian Lamparter <chunkeey@web.de> + * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> + * + * Based on: + * - the islsm (softmac prism54) driver, which is: + * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al. + * - stlc45xx driver + * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/slab.h> +#include <linux/firmware.h> +#include <linux/etherdevice.h> +#include <linux/module.h> + +#include <net/mac80211.h> + +#include "p54.h" +#include "lmac.h" + +static bool modparam_nohwcrypt; +module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO); +MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption."); +MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>"); +MODULE_DESCRIPTION("Softmac Prism54 common code"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("prism54common"); + +static int p54_sta_add_remove(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct p54_common *priv = hw->priv; + + /* + * Notify the firmware that we don't want or we don't + * need to buffer frames for this station anymore. + */ + + p54_sta_unlock(priv, sta->addr); + + return 0; +} + +static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif, + enum sta_notify_cmd notify_cmd, + struct ieee80211_sta *sta) +{ + struct p54_common *priv = dev->priv; + + switch (notify_cmd) { + case STA_NOTIFY_AWAKE: + /* update the firmware's filter table */ + p54_sta_unlock(priv, sta->addr); + break; + default: + break; + } +} + +static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta, + bool set) +{ + struct p54_common *priv = dev->priv; + + return p54_update_beacon_tim(priv, sta->aid, set); +} + +u8 *p54_find_ie(struct sk_buff *skb, u8 ie) +{ + struct ieee80211_mgmt *mgmt = (void *)skb->data; + u8 *pos, *end; + + if (skb->len <= sizeof(mgmt)) + return NULL; + + pos = (u8 *)mgmt->u.beacon.variable; + end = skb->data + skb->len; + while (pos < end) { + if (pos + 2 + pos[1] > end) + return NULL; + + if (pos[0] == ie) + return pos; + + pos += 2 + pos[1]; + } + return NULL; +} + +static int p54_beacon_format_ie_tim(struct sk_buff *skb) +{ + /* + * the good excuse for this mess is ... the firmware. + * The dummy TIM MUST be at the end of the beacon frame, + * because it'll be overwritten! + */ + u8 *tim; + u8 dtim_len; + u8 dtim_period; + u8 *next; + + tim = p54_find_ie(skb, WLAN_EID_TIM); + if (!tim) + return 0; + + dtim_len = tim[1]; + dtim_period = tim[3]; + next = tim + 2 + dtim_len; + + if (dtim_len < 3) + return -EINVAL; + + memmove(tim, next, skb_tail_pointer(skb) - next); + tim = skb_tail_pointer(skb) - (dtim_len + 2); + + /* add the dummy at the end */ + tim[0] = WLAN_EID_TIM; + tim[1] = 3; + tim[2] = 0; + tim[3] = dtim_period; + tim[4] = 0; + + if (dtim_len > 3) + skb_trim(skb, skb->len - (dtim_len - 3)); + + return 0; +} + +static int p54_beacon_update(struct p54_common *priv, + struct ieee80211_vif *vif) +{ + struct ieee80211_tx_control control = { }; + struct sk_buff *beacon; + int ret; + + beacon = ieee80211_beacon_get(priv->hw, vif); + if (!beacon) + return -ENOMEM; + ret = p54_beacon_format_ie_tim(beacon); + if (ret) + return ret; + + /* + * During operation, the firmware takes care of beaconing. + * The driver only needs to upload a new beacon template, once + * the template was changed by the stack or userspace. + * + * LMAC API 3.2.2 also specifies that the driver does not need + * to cancel the old beacon template by hand, instead the firmware + * will release the previous one through the feedback mechanism. + */ + p54_tx_80211(priv->hw, &control, beacon); + priv->tsf_high32 = 0; + priv->tsf_low32 = 0; + + return 0; +} + +static int p54_start(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + int err; + + mutex_lock(&priv->conf_mutex); + err = priv->open(dev); + if (err) + goto out; + P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47); + P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94); + P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0); + P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0); + err = p54_set_edcf(priv); + if (err) + goto out; + + eth_broadcast_addr(priv->bssid); + priv->mode = NL80211_IFTYPE_MONITOR; + err = p54_setup_mac(priv); + if (err) { + priv->mode = NL80211_IFTYPE_UNSPECIFIED; + goto out; + } + + ieee80211_queue_delayed_work(dev, &priv->work, 0); + + priv->softled_state = 0; + err = p54_set_leds(priv); + +out: + mutex_unlock(&priv->conf_mutex); + return err; +} + +static void p54_stop(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + int i; + + priv->mode = NL80211_IFTYPE_UNSPECIFIED; + priv->softled_state = 0; + cancel_delayed_work_sync(&priv->work); + mutex_lock(&priv->conf_mutex); + p54_set_leds(priv); + priv->stop(dev); + skb_queue_purge(&priv->tx_pending); + skb_queue_purge(&priv->tx_queue); + for (i = 0; i < P54_QUEUE_NUM; i++) { + priv->tx_stats[i].count = 0; + priv->tx_stats[i].len = 0; + } + + priv->beacon_req_id = cpu_to_le32(0); + priv->tsf_high32 = priv->tsf_low32 = 0; + mutex_unlock(&priv->conf_mutex); +} + +static int p54_add_interface(struct ieee80211_hw *dev, + struct ieee80211_vif *vif) +{ + struct p54_common *priv = dev->priv; + int err; + + vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER; + + mutex_lock(&priv->conf_mutex); + if (priv->mode != NL80211_IFTYPE_MONITOR) { + mutex_unlock(&priv->conf_mutex); + return -EOPNOTSUPP; + } + + priv->vif = vif; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_MESH_POINT: + priv->mode = vif->type; + break; + default: + mutex_unlock(&priv->conf_mutex); + return -EOPNOTSUPP; + } + + memcpy(priv->mac_addr, vif->addr, ETH_ALEN); + err = p54_setup_mac(priv); + mutex_unlock(&priv->conf_mutex); + return err; +} + +static void p54_remove_interface(struct ieee80211_hw *dev, + struct ieee80211_vif *vif) +{ + struct p54_common *priv = dev->priv; + + mutex_lock(&priv->conf_mutex); + priv->vif = NULL; + + /* + * LMAC API 3.2.2 states that any active beacon template must be + * canceled by the driver before attempting a mode transition. + */ + if (le32_to_cpu(priv->beacon_req_id) != 0) { + p54_tx_cancel(priv, priv->beacon_req_id); + wait_for_completion_interruptible_timeout(&priv->beacon_comp, HZ); + } + priv->mode = NL80211_IFTYPE_MONITOR; + eth_zero_addr(priv->mac_addr); + eth_zero_addr(priv->bssid); + p54_setup_mac(priv); + mutex_unlock(&priv->conf_mutex); +} + +static int p54_wait_for_stats(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + int ret; + + priv->update_stats = true; + ret = p54_fetch_statistics(priv); + if (ret) + return ret; + + ret = wait_for_completion_interruptible_timeout(&priv->stat_comp, HZ); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static void p54_reset_stats(struct p54_common *priv) +{ + struct ieee80211_channel *chan = priv->curchan; + + if (chan) { + struct survey_info *info = &priv->survey[chan->hw_value]; + + /* only reset channel statistics, don't touch .filled, etc. */ + info->time = 0; + info->time_busy = 0; + info->time_tx = 0; + } + + priv->update_stats = true; + priv->survey_raw.active = 0; + priv->survey_raw.cca = 0; + priv->survey_raw.tx = 0; +} + +static int p54_config(struct ieee80211_hw *dev, u32 changed) +{ + int ret = 0; + struct p54_common *priv = dev->priv; + struct ieee80211_conf *conf = &dev->conf; + + mutex_lock(&priv->conf_mutex); + if (changed & IEEE80211_CONF_CHANGE_POWER) + priv->output_power = conf->power_level << 2; + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + struct ieee80211_channel *oldchan; + WARN_ON(p54_wait_for_stats(dev)); + oldchan = priv->curchan; + priv->curchan = NULL; + ret = p54_scan(priv, P54_SCAN_EXIT, 0); + if (ret) { + priv->curchan = oldchan; + goto out; + } + /* + * TODO: Use the LM_SCAN_TRAP to determine the current + * operating channel. + */ + priv->curchan = priv->hw->conf.chandef.chan; + p54_reset_stats(priv); + WARN_ON(p54_fetch_statistics(priv)); + } + if (changed & IEEE80211_CONF_CHANGE_PS) { + WARN_ON(p54_wait_for_stats(dev)); + ret = p54_set_ps(priv); + if (ret) + goto out; + WARN_ON(p54_wait_for_stats(dev)); + } + if (changed & IEEE80211_CONF_CHANGE_IDLE) { + WARN_ON(p54_wait_for_stats(dev)); + ret = p54_setup_mac(priv); + if (ret) + goto out; + WARN_ON(p54_wait_for_stats(dev)); + } + +out: + mutex_unlock(&priv->conf_mutex); + return ret; +} + +static u64 p54_prepare_multicast(struct ieee80211_hw *dev, + struct netdev_hw_addr_list *mc_list) +{ + struct p54_common *priv = dev->priv; + struct netdev_hw_addr *ha; + int i; + + BUILD_BUG_ON(ARRAY_SIZE(priv->mc_maclist) != + ARRAY_SIZE(((struct p54_group_address_table *)NULL)->mac_list)); + /* + * The first entry is reserved for the global broadcast MAC. + * Otherwise the firmware will drop it and ARP will no longer work. + */ + i = 1; + priv->mc_maclist_num = netdev_hw_addr_list_count(mc_list) + i; + netdev_hw_addr_list_for_each(ha, mc_list) { + memcpy(&priv->mc_maclist[i], ha->addr, ETH_ALEN); + i++; + if (i >= ARRAY_SIZE(priv->mc_maclist)) + break; + } + + return 1; /* update */ +} + +static void p54_configure_filter(struct ieee80211_hw *dev, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct p54_common *priv = dev->priv; + + *total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS; + + priv->filter_flags = *total_flags; + + if (changed_flags & FIF_OTHER_BSS) + p54_setup_mac(priv); + + if (changed_flags & FIF_ALLMULTI || multicast) + p54_set_groupfilter(priv); +} + +static int p54_conf_tx(struct ieee80211_hw *dev, + struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct p54_common *priv = dev->priv; + int ret; + + mutex_lock(&priv->conf_mutex); + if (queue < dev->queues) { + P54_SET_QUEUE(priv->qos_params[queue], params->aifs, + params->cw_min, params->cw_max, params->txop); + ret = p54_set_edcf(priv); + } else + ret = -EINVAL; + mutex_unlock(&priv->conf_mutex); + return ret; +} + +static void p54_work(struct work_struct *work) +{ + struct p54_common *priv = container_of(work, struct p54_common, + work.work); + + if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED)) + return ; + + /* + * TODO: walk through tx_queue and do the following tasks + * 1. initiate bursts. + * 2. cancel stuck frames / reset the device if necessary. + */ + + mutex_lock(&priv->conf_mutex); + WARN_ON_ONCE(p54_fetch_statistics(priv)); + mutex_unlock(&priv->conf_mutex); +} + +static int p54_get_stats(struct ieee80211_hw *dev, + struct ieee80211_low_level_stats *stats) +{ + struct p54_common *priv = dev->priv; + + memcpy(stats, &priv->stats, sizeof(*stats)); + return 0; +} + +static void p54_bss_info_changed(struct ieee80211_hw *dev, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, + u32 changed) +{ + struct p54_common *priv = dev->priv; + + mutex_lock(&priv->conf_mutex); + if (changed & BSS_CHANGED_BSSID) { + memcpy(priv->bssid, info->bssid, ETH_ALEN); + p54_setup_mac(priv); + } + + if (changed & BSS_CHANGED_BEACON) { + p54_scan(priv, P54_SCAN_EXIT, 0); + p54_setup_mac(priv); + p54_beacon_update(priv, vif); + p54_set_edcf(priv); + } + + if (changed & (BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BEACON)) { + priv->use_short_slot = info->use_short_slot; + p54_set_edcf(priv); + } + if (changed & BSS_CHANGED_BASIC_RATES) { + if (dev->conf.chandef.chan->band == IEEE80211_BAND_5GHZ) + priv->basic_rate_mask = (info->basic_rates << 4); + else + priv->basic_rate_mask = info->basic_rates; + p54_setup_mac(priv); + if (priv->fw_var >= 0x500) + p54_scan(priv, P54_SCAN_EXIT, 0); + } + if (changed & BSS_CHANGED_ASSOC) { + if (info->assoc) { + priv->aid = info->aid; + priv->wakeup_timer = info->beacon_int * + info->dtim_period * 5; + p54_setup_mac(priv); + } else { + priv->wakeup_timer = 500; + priv->aid = 0; + } + } + + mutex_unlock(&priv->conf_mutex); +} + +static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct p54_common *priv = dev->priv; + int slot, ret = 0; + u8 algo = 0; + u8 *addr = NULL; + + if (modparam_nohwcrypt) + return -EOPNOTSUPP; + + if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) { + /* + * Unfortunately most/all firmwares are trying to decrypt + * incoming management frames if a suitable key can be found. + * However, in doing so the data in these frames gets + * corrupted. So, we can't have firmware supported crypto + * offload in this case. + */ + return -EOPNOTSUPP; + } + + mutex_lock(&priv->conf_mutex); + if (cmd == SET_KEY) { + switch (key->cipher) { + case WLAN_CIPHER_SUITE_TKIP: + if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL | + BR_DESC_PRIV_CAP_TKIP))) { + ret = -EOPNOTSUPP; + goto out_unlock; + } + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + algo = P54_CRYPTO_TKIPMICHAEL; + break; + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP)) { + ret = -EOPNOTSUPP; + goto out_unlock; + } + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + algo = P54_CRYPTO_WEP; + break; + case WLAN_CIPHER_SUITE_CCMP: + if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP)) { + ret = -EOPNOTSUPP; + goto out_unlock; + } + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + algo = P54_CRYPTO_AESCCMP; + break; + default: + ret = -EOPNOTSUPP; + goto out_unlock; + } + slot = bitmap_find_free_region(priv->used_rxkeys, + priv->rx_keycache_size, 0); + + if (slot < 0) { + /* + * The device supports the chosen algorithm, but the + * firmware does not provide enough key slots to store + * all of them. + * But encryption offload for outgoing frames is always + * possible, so we just pretend that the upload was + * successful and do the decryption in software. + */ + + /* mark the key as invalid. */ + key->hw_key_idx = 0xff; + goto out_unlock; + } + + key->flags |= IEEE80211_KEY_FLAG_RESERVE_TAILROOM; + } else { + slot = key->hw_key_idx; + + if (slot == 0xff) { + /* This key was not uploaded into the rx key cache. */ + + goto out_unlock; + } + + bitmap_release_region(priv->used_rxkeys, slot, 0); + algo = 0; + } + + if (sta) + addr = sta->addr; + + ret = p54_upload_key(priv, algo, slot, key->keyidx, + key->keylen, addr, key->key); + if (ret) { + bitmap_release_region(priv->used_rxkeys, slot, 0); + ret = -EOPNOTSUPP; + goto out_unlock; + } + + key->hw_key_idx = slot; + +out_unlock: + mutex_unlock(&priv->conf_mutex); + return ret; +} + +static int p54_get_survey(struct ieee80211_hw *dev, int idx, + struct survey_info *survey) +{ + struct p54_common *priv = dev->priv; + struct ieee80211_channel *chan; + int err, tries; + bool in_use = false; + + if (idx >= priv->chan_num) + return -ENOENT; + +#define MAX_TRIES 1 + for (tries = 0; tries < MAX_TRIES; tries++) { + chan = priv->curchan; + if (chan && chan->hw_value == idx) { + mutex_lock(&priv->conf_mutex); + err = p54_wait_for_stats(dev); + mutex_unlock(&priv->conf_mutex); + if (err) + return err; + + in_use = true; + } + + memcpy(survey, &priv->survey[idx], sizeof(*survey)); + + if (in_use) { + /* test if the reported statistics are valid. */ + if (survey->time != 0) { + survey->filled |= SURVEY_INFO_IN_USE; + } else { + /* + * hw/fw has not accumulated enough sample sets. + * Wait for 100ms, this ought to be enough to + * to get at least one non-null set of channel + * usage statistics. + */ + msleep(100); + continue; + } + } + return 0; + } + return -ETIMEDOUT; +#undef MAX_TRIES +} + +static unsigned int p54_flush_count(struct p54_common *priv) +{ + unsigned int total = 0, i; + + BUILD_BUG_ON(P54_QUEUE_NUM > ARRAY_SIZE(priv->tx_stats)); + + /* + * Because the firmware has the sole control over any frames + * in the P54_QUEUE_BEACON or P54_QUEUE_SCAN queues, they + * don't really count as pending or active. + */ + for (i = P54_QUEUE_MGMT; i < P54_QUEUE_NUM; i++) + total += priv->tx_stats[i].len; + return total; +} + +static void p54_flush(struct ieee80211_hw *dev, struct ieee80211_vif *vif, + u32 queues, bool drop) +{ + struct p54_common *priv = dev->priv; + unsigned int total, i; + + /* + * Currently, it wouldn't really matter if we wait for one second + * or 15 minutes. But once someone gets around and completes the + * TODOs [ancel stuck frames / reset device] in p54_work, it will + * suddenly make sense to wait that long. + */ + i = P54_STATISTICS_UPDATE * 2 / 20; + + /* + * In this case no locking is required because as we speak the + * queues have already been stopped and no new frames can sneak + * up from behind. + */ + while ((total = p54_flush_count(priv) && i--)) { + /* waste time */ + msleep(20); + } + + WARN(total, "tx flush timeout, unresponsive firmware"); +} + +static void p54_set_coverage_class(struct ieee80211_hw *dev, + s16 coverage_class) +{ + struct p54_common *priv = dev->priv; + + mutex_lock(&priv->conf_mutex); + /* support all coverage class values as in 802.11-2007 Table 7-27 */ + priv->coverage_class = clamp_t(u8, coverage_class, 0, 31); + p54_set_edcf(priv); + mutex_unlock(&priv->conf_mutex); +} + +static const struct ieee80211_ops p54_ops = { + .tx = p54_tx_80211, + .start = p54_start, + .stop = p54_stop, + .add_interface = p54_add_interface, + .remove_interface = p54_remove_interface, + .set_tim = p54_set_tim, + .sta_notify = p54_sta_notify, + .sta_add = p54_sta_add_remove, + .sta_remove = p54_sta_add_remove, + .set_key = p54_set_key, + .config = p54_config, + .flush = p54_flush, + .bss_info_changed = p54_bss_info_changed, + .prepare_multicast = p54_prepare_multicast, + .configure_filter = p54_configure_filter, + .conf_tx = p54_conf_tx, + .get_stats = p54_get_stats, + .get_survey = p54_get_survey, + .set_coverage_class = p54_set_coverage_class, +}; + +struct ieee80211_hw *p54_init_common(size_t priv_data_len) +{ + struct ieee80211_hw *dev; + struct p54_common *priv; + + dev = ieee80211_alloc_hw(priv_data_len, &p54_ops); + if (!dev) + return NULL; + + priv = dev->priv; + priv->hw = dev; + priv->mode = NL80211_IFTYPE_UNSPECIFIED; + priv->basic_rate_mask = 0x15f; + spin_lock_init(&priv->tx_stats_lock); + skb_queue_head_init(&priv->tx_queue); + skb_queue_head_init(&priv->tx_pending); + ieee80211_hw_set(dev, REPORTS_TX_ACK_STATUS); + ieee80211_hw_set(dev, MFP_CAPABLE); + ieee80211_hw_set(dev, PS_NULLFUNC_STACK); + ieee80211_hw_set(dev, SUPPORTS_PS); + ieee80211_hw_set(dev, RX_INCLUDES_FCS); + ieee80211_hw_set(dev, SIGNAL_DBM); + + dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_MESH_POINT); + + priv->beacon_req_id = cpu_to_le32(0); + priv->tx_stats[P54_QUEUE_BEACON].limit = 1; + priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1; + priv->tx_stats[P54_QUEUE_MGMT].limit = 3; + priv->tx_stats[P54_QUEUE_CAB].limit = 3; + priv->tx_stats[P54_QUEUE_DATA].limit = 5; + dev->queues = 1; + priv->noise = -94; + /* + * We support at most 8 tries no matter which rate they're at, + * we cannot support max_rates * max_rate_tries as we set it + * here, but setting it correctly to 4/2 or so would limit us + * artificially if the RC algorithm wants just two rates, so + * let's say 4/7, we'll redistribute it at TX time, see the + * comments there. + */ + dev->max_rates = 4; + dev->max_rate_tries = 7; + dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 + + sizeof(struct p54_tx_data); + + /* + * For now, disable PS by default because it affects + * link stability significantly. + */ + dev->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT; + + mutex_init(&priv->conf_mutex); + mutex_init(&priv->eeprom_mutex); + init_completion(&priv->stat_comp); + init_completion(&priv->eeprom_comp); + init_completion(&priv->beacon_comp); + INIT_DELAYED_WORK(&priv->work, p54_work); + + eth_broadcast_addr(priv->mc_maclist[0]); + priv->curchan = NULL; + p54_reset_stats(priv); + return dev; +} +EXPORT_SYMBOL_GPL(p54_init_common); + +int p54_register_common(struct ieee80211_hw *dev, struct device *pdev) +{ + struct p54_common __maybe_unused *priv = dev->priv; + int err; + + err = ieee80211_register_hw(dev); + if (err) { + dev_err(pdev, "Cannot register device (%d).\n", err); + return err; + } + priv->registered = true; + +#ifdef CONFIG_P54_LEDS + err = p54_init_leds(priv); + if (err) { + p54_unregister_common(dev); + return err; + } +#endif /* CONFIG_P54_LEDS */ + + dev_info(pdev, "is registered as '%s'\n", wiphy_name(dev->wiphy)); + return 0; +} +EXPORT_SYMBOL_GPL(p54_register_common); + +void p54_free_common(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + unsigned int i; + + for (i = 0; i < IEEE80211_NUM_BANDS; i++) + kfree(priv->band_table[i]); + + kfree(priv->iq_autocal); + kfree(priv->output_limit); + kfree(priv->curve_data); + kfree(priv->rssi_db); + kfree(priv->used_rxkeys); + kfree(priv->survey); + priv->iq_autocal = NULL; + priv->output_limit = NULL; + priv->curve_data = NULL; + priv->rssi_db = NULL; + priv->used_rxkeys = NULL; + priv->survey = NULL; + ieee80211_free_hw(dev); +} +EXPORT_SYMBOL_GPL(p54_free_common); + +void p54_unregister_common(struct ieee80211_hw *dev) +{ + struct p54_common *priv = dev->priv; + +#ifdef CONFIG_P54_LEDS + p54_unregister_leds(priv); +#endif /* CONFIG_P54_LEDS */ + + if (priv->registered) { + priv->registered = false; + ieee80211_unregister_hw(dev); + } + + mutex_destroy(&priv->conf_mutex); + mutex_destroy(&priv->eeprom_mutex); +} +EXPORT_SYMBOL_GPL(p54_unregister_common); |
