| /* |
| * 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, 0444); |
| 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 == NL80211_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 < NUM_NL80211_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; |
| |
| if (priv->registered) { |
| priv->registered = false; |
| #ifdef CONFIG_P54_LEDS |
| p54_unregister_leds(priv); |
| #endif /* CONFIG_P54_LEDS */ |
| ieee80211_unregister_hw(dev); |
| } |
| |
| mutex_destroy(&priv->conf_mutex); |
| mutex_destroy(&priv->eeprom_mutex); |
| } |
| EXPORT_SYMBOL_GPL(p54_unregister_common); |