aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/ath/ath9k/htc_drv_main.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_main.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/htc_drv_main.c1775
1 files changed, 1775 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
new file mode 100644
index 00000000000..9d371c18eb4
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -0,0 +1,1775 @@
+/*
+ * Copyright (c) 2010 Atheros Communications Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "htc.h"
+
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+static struct dentry *ath9k_debugfs_root;
+#endif
+
+/*************/
+/* Utilities */
+/*************/
+
+static void ath_update_txpow(struct ath9k_htc_priv *priv)
+{
+ struct ath_hw *ah = priv->ah;
+ u32 txpow;
+
+ if (priv->curtxpow != priv->txpowlimit) {
+ ath9k_hw_set_txpowerlimit(ah, priv->txpowlimit);
+ /* read back in case value is clamped */
+ ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
+ priv->curtxpow = txpow;
+ }
+}
+
+/* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
+static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
+ struct ath9k_channel *ichan)
+{
+ enum htc_phymode mode;
+
+ mode = HTC_MODE_AUTO;
+
+ switch (ichan->chanmode) {
+ case CHANNEL_G:
+ case CHANNEL_G_HT20:
+ case CHANNEL_G_HT40PLUS:
+ case CHANNEL_G_HT40MINUS:
+ mode = HTC_MODE_11NG;
+ break;
+ case CHANNEL_A:
+ case CHANNEL_A_HT20:
+ case CHANNEL_A_HT40PLUS:
+ case CHANNEL_A_HT40MINUS:
+ mode = HTC_MODE_11NA;
+ break;
+ default:
+ break;
+ }
+
+ return mode;
+}
+
+static bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
+ enum ath9k_power_mode mode)
+{
+ bool ret;
+
+ mutex_lock(&priv->htc_pm_lock);
+ ret = ath9k_hw_setpower(priv->ah, mode);
+ mutex_unlock(&priv->htc_pm_lock);
+
+ return ret;
+}
+
+void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
+{
+ mutex_lock(&priv->htc_pm_lock);
+ if (++priv->ps_usecount != 1)
+ goto unlock;
+ ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
+
+unlock:
+ mutex_unlock(&priv->htc_pm_lock);
+}
+
+void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
+{
+ mutex_lock(&priv->htc_pm_lock);
+ if (--priv->ps_usecount != 0)
+ goto unlock;
+
+ if (priv->ps_idle)
+ ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
+ else if (priv->ps_enabled)
+ ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
+
+unlock:
+ mutex_unlock(&priv->htc_pm_lock);
+}
+
+void ath9k_ps_work(struct work_struct *work)
+{
+ struct ath9k_htc_priv *priv =
+ container_of(work, struct ath9k_htc_priv,
+ ps_work);
+ ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
+
+ /* The chip wakes up after receiving the first beacon
+ while network sleep is enabled. For the driver to
+ be in sync with the hw, set the chip to awake and
+ only then set it to sleep.
+ */
+ ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
+}
+
+static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
+ struct ieee80211_hw *hw,
+ struct ath9k_channel *hchan)
+{
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_conf *conf = &common->hw->conf;
+ bool fastcc = true;
+ struct ieee80211_channel *channel = hw->conf.channel;
+ enum htc_phymode mode;
+ __be16 htc_mode;
+ u8 cmd_rsp;
+ int ret;
+
+ if (priv->op_flags & OP_INVALID)
+ return -EIO;
+
+ if (priv->op_flags & OP_FULL_RESET)
+ fastcc = false;
+
+ /* Fiddle around with fastcc later on, for now just use full reset */
+ fastcc = false;
+ ath9k_htc_ps_wakeup(priv);
+ htc_stop(priv->htc);
+ WMI_CMD(WMI_DISABLE_INTR_CMDID);
+ WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
+ WMI_CMD(WMI_STOP_RECV_CMDID);
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "(%u MHz) -> (%u MHz), HT: %d, HT40: %d\n",
+ priv->ah->curchan->channel,
+ channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf));
+
+ ret = ath9k_hw_reset(ah, hchan, fastcc);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset channel (%u Mhz) "
+ "reset status %d\n", channel->center_freq, ret);
+ goto err;
+ }
+
+ ath_update_txpow(priv);
+
+ WMI_CMD(WMI_START_RECV_CMDID);
+ if (ret)
+ goto err;
+
+ ath9k_host_rx_init(priv);
+
+ mode = ath9k_htc_get_curmode(priv, hchan);
+ htc_mode = cpu_to_be16(mode);
+ WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
+ if (ret)
+ goto err;
+
+ WMI_CMD(WMI_ENABLE_INTR_CMDID);
+ if (ret)
+ goto err;
+
+ htc_start(priv->htc);
+
+ priv->op_flags &= ~OP_FULL_RESET;
+err:
+ ath9k_htc_ps_restore(priv);
+ return ret;
+}
+
+static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_target_vif hvif;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ if (priv->nvifs > 0)
+ return -ENOBUFS;
+
+ memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
+ memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
+
+ hvif.opmode = cpu_to_be32(HTC_M_MONITOR);
+ priv->ah->opmode = NL80211_IFTYPE_MONITOR;
+ hvif.index = priv->nvifs;
+
+ WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
+ if (ret)
+ return ret;
+
+ priv->nvifs++;
+ return 0;
+}
+
+static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_target_vif hvif;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
+ memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
+ hvif.index = 0; /* Should do for now */
+ WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
+ priv->nvifs--;
+
+ return ret;
+}
+
+static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_target_sta tsta;
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
+ struct ath9k_htc_sta *ista;
+ int ret;
+ u8 cmd_rsp;
+
+ if (priv->nstations >= ATH9K_HTC_MAX_STA)
+ return -ENOBUFS;
+
+ memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
+
+ if (sta) {
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
+ memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
+ tsta.associd = common->curaid;
+ tsta.is_vif_sta = 0;
+ tsta.valid = true;
+ ista->index = priv->nstations;
+ } else {
+ memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
+ tsta.is_vif_sta = 1;
+ }
+
+ tsta.sta_index = priv->nstations;
+ tsta.vif_index = avp->index;
+ tsta.maxampdu = 0xffff;
+ if (sta && sta->ht_cap.ht_supported)
+ tsta.flags = cpu_to_be16(ATH_HTC_STA_HT);
+
+ WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
+ if (ret) {
+ if (sta)
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to add station entry for: %pM\n", sta->addr);
+ return ret;
+ }
+
+ if (sta)
+ ath_print(common, ATH_DBG_CONFIG,
+ "Added a station entry for: %pM (idx: %d)\n",
+ sta->addr, tsta.sta_index);
+
+ priv->nstations++;
+ return 0;
+}
+
+static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_sta *ista;
+ int ret;
+ u8 cmd_rsp, sta_idx;
+
+ if (sta) {
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ sta_idx = ista->index;
+ } else {
+ sta_idx = 0;
+ }
+
+ WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
+ if (ret) {
+ if (sta)
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to remove station entry for: %pM\n",
+ sta->addr);
+ return ret;
+ }
+
+ if (sta)
+ ath_print(common, ATH_DBG_CONFIG,
+ "Removed a station entry for: %pM (idx: %d)\n",
+ sta->addr, sta_idx);
+
+ priv->nstations--;
+ return 0;
+}
+
+static int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv)
+{
+ struct ath9k_htc_cap_target tcap;
+ int ret;
+ u8 cmd_rsp;
+
+ memset(&tcap, 0, sizeof(struct ath9k_htc_cap_target));
+
+ /* FIXME: Values are hardcoded */
+ tcap.flags = 0x240c40;
+ tcap.flags_ext = 0x80601000;
+ tcap.ampdu_limit = 0xffff0000;
+ tcap.ampdu_subframes = 20;
+ tcap.tx_chainmask_legacy = 1;
+ tcap.protmode = 1;
+ tcap.tx_chainmask = 1;
+
+ WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap);
+
+ return ret;
+}
+
+static int ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ struct ieee80211_supported_band *sband;
+ struct ath9k_htc_target_rate trate;
+ u32 caps = 0;
+ u8 cmd_rsp;
+ int i, j, ret;
+
+ memset(&trate, 0, sizeof(trate));
+
+ /* Only 2GHz is supported */
+ sband = priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ];
+
+ for (i = 0, j = 0; i < sband->n_bitrates; i++) {
+ if (sta->supp_rates[sband->band] & BIT(i)) {
+ priv->tgt_rate.rates.legacy_rates.rs_rates[j]
+ = (sband->bitrates[i].bitrate * 2) / 10;
+ j++;
+ }
+ }
+ priv->tgt_rate.rates.legacy_rates.rs_nrates = j;
+
+ if (sta->ht_cap.ht_supported) {
+ for (i = 0, j = 0; i < 77; i++) {
+ if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8)))
+ priv->tgt_rate.rates.ht_rates.rs_rates[j++] = i;
+ if (j == ATH_HTC_RATE_MAX)
+ break;
+ }
+ priv->tgt_rate.rates.ht_rates.rs_nrates = j;
+
+ caps = WLAN_RC_HT_FLAG;
+ if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
+ caps |= WLAN_RC_40_FLAG;
+ if (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)
+ caps |= WLAN_RC_SGI_FLAG;
+
+ }
+
+ priv->tgt_rate.sta_index = ista->index;
+ priv->tgt_rate.isnew = 1;
+ trate = priv->tgt_rate;
+ priv->tgt_rate.capflags = cpu_to_be32(caps);
+ trate.capflags = cpu_to_be32(caps);
+
+ WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, &trate);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to initialize Rate information on target\n");
+ return ret;
+ }
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "Updated target STA: %pM (caps: 0x%x)\n", sta->addr, caps);
+ return 0;
+}
+
+static bool check_rc_update(struct ieee80211_hw *hw, bool *cw40)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ieee80211_conf *conf = &hw->conf;
+
+ if (!conf_is_ht(conf))
+ return false;
+
+ if (!(priv->op_flags & OP_ASSOCIATED) ||
+ (priv->op_flags & OP_SCANNING))
+ return false;
+
+ if (conf_is_ht40(conf)) {
+ if (priv->ah->curchan->chanmode &
+ (CHANNEL_HT40PLUS | CHANNEL_HT40MINUS)) {
+ return false;
+ } else {
+ *cw40 = true;
+ return true;
+ }
+ } else { /* ht20 */
+ if (priv->ah->curchan->chanmode & CHANNEL_HT20)
+ return false;
+ else
+ return true;
+ }
+}
+
+static void ath9k_htc_rc_update(struct ath9k_htc_priv *priv, bool is_cw40)
+{
+ struct ath9k_htc_target_rate trate;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int ret;
+ u32 caps = be32_to_cpu(priv->tgt_rate.capflags);
+ u8 cmd_rsp;
+
+ memset(&trate, 0, sizeof(trate));
+
+ trate = priv->tgt_rate;
+
+ if (is_cw40)
+ caps |= WLAN_RC_40_FLAG;
+ else
+ caps &= ~WLAN_RC_40_FLAG;
+
+ priv->tgt_rate.capflags = cpu_to_be32(caps);
+ trate.capflags = cpu_to_be32(caps);
+
+ WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, &trate);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to update Rate information on target\n");
+ return;
+ }
+
+ ath_print(common, ATH_DBG_CONFIG, "Rate control updated with "
+ "caps:0x%x on target\n", priv->tgt_rate.capflags);
+}
+
+static int ath9k_htc_aggr_oper(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ u8 *sta_addr, u8 tid, bool oper)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_target_aggr aggr;
+ struct ieee80211_sta *sta = NULL;
+ struct ath9k_htc_sta *ista;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ if (tid >= ATH9K_HTC_MAX_TID)
+ return -EINVAL;
+
+ memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));
+
+ rcu_read_lock();
+
+ /* Check if we are able to retrieve the station */
+ sta = ieee80211_find_sta(vif, sta_addr);
+ if (!sta) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+
+ if (oper)
+ ista->tid_state[tid] = AGGR_START;
+ else
+ ista->tid_state[tid] = AGGR_STOP;
+
+ aggr.sta_index = ista->index;
+
+ rcu_read_unlock();
+
+ aggr.tidno = tid;
+ aggr.aggr_enable = oper;
+
+ WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
+ if (ret)
+ ath_print(common, ATH_DBG_CONFIG,
+ "Unable to %s TX aggregation for (%pM, %d)\n",
+ (oper) ? "start" : "stop", sta->addr, tid);
+ else
+ ath_print(common, ATH_DBG_CONFIG,
+ "%s aggregation for (%pM, %d)\n",
+ (oper) ? "Starting" : "Stopping", sta->addr, tid);
+
+ return ret;
+}
+
+void ath9k_htc_aggr_work(struct work_struct *work)
+{
+ int ret = 0;
+ struct ath9k_htc_priv *priv =
+ container_of(work, struct ath9k_htc_priv,
+ ath9k_aggr_work.work);
+ struct ath9k_htc_aggr_work *wk = &priv->aggr_work;
+
+ mutex_lock(&wk->mutex);
+
+ switch (wk->action) {
+ case IEEE80211_AMPDU_TX_START:
+ ret = ath9k_htc_aggr_oper(priv, wk->vif, wk->sta_addr,
+ wk->tid, true);
+ if (!ret)
+ ieee80211_start_tx_ba_cb(wk->vif, wk->sta_addr,
+ wk->tid);
+ break;
+ case IEEE80211_AMPDU_TX_STOP:
+ ath9k_htc_aggr_oper(priv, wk->vif, wk->sta_addr,
+ wk->tid, false);
+ ieee80211_stop_tx_ba_cb(wk->vif, wk->sta_addr, wk->tid);
+ break;
+ default:
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
+ "Unknown AMPDU action\n");
+ }
+
+ mutex_unlock(&wk->mutex);
+}
+
+/*********/
+/* DEBUG */
+/*********/
+
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+
+static int ath9k_debugfs_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+ return 0;
+}
+
+static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath9k_htc_priv *priv =
+ (struct ath9k_htc_priv *) file->private_data;
+ struct ath9k_htc_target_stats cmd_rsp;
+ char buf[512];
+ unsigned int len = 0;
+ int ret = 0;
+
+ memset(&cmd_rsp, 0, sizeof(cmd_rsp));
+
+ WMI_CMD(WMI_TGT_STATS_CMDID);
+ if (ret)
+ return -EINVAL;
+
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Short Retries",
+ be32_to_cpu(cmd_rsp.tx_shortretry));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Long Retries",
+ be32_to_cpu(cmd_rsp.tx_longretry));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Xretries",
+ be32_to_cpu(cmd_rsp.tx_xretries));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Unaggr. Xretries",
+ be32_to_cpu(cmd_rsp.ht_txunaggr_xretry));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Xretries (HT)",
+ be32_to_cpu(cmd_rsp.ht_tx_xretries));
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%19s : %10u\n", "TX Rate", priv->debug.txrate);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_tgt_stats = {
+ .read = read_file_tgt_stats,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath9k_htc_priv *priv =
+ (struct ath9k_htc_priv *) file->private_data;
+ char buf[512];
+ unsigned int len = 0;
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "Buffers queued",
+ priv->debug.tx_stats.buf_queued);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "Buffers completed",
+ priv->debug.tx_stats.buf_completed);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs queued",
+ priv->debug.tx_stats.skb_queued);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs completed",
+ priv->debug.tx_stats.skb_completed);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs dropped",
+ priv->debug.tx_stats.skb_dropped);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_xmit = {
+ .read = read_file_xmit,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+static ssize_t read_file_recv(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath9k_htc_priv *priv =
+ (struct ath9k_htc_priv *) file->private_data;
+ char buf[512];
+ unsigned int len = 0;
+
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs allocated",
+ priv->debug.rx_stats.skb_allocated);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs completed",
+ priv->debug.rx_stats.skb_completed);
+ len += snprintf(buf + len, sizeof(buf) - len,
+ "%20s : %10u\n", "SKBs Dropped",
+ priv->debug.rx_stats.skb_dropped);
+
+ return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_recv = {
+ .read = read_file_recv,
+ .open = ath9k_debugfs_open,
+ .owner = THIS_MODULE
+};
+
+int ath9k_htc_init_debug(struct ath_hw *ah)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
+
+ if (!ath9k_debugfs_root)
+ return -ENOENT;
+
+ priv->debug.debugfs_phy = debugfs_create_dir(wiphy_name(priv->hw->wiphy),
+ ath9k_debugfs_root);
+ if (!priv->debug.debugfs_phy)
+ goto err;
+
+ priv->debug.debugfs_tgt_stats = debugfs_create_file("tgt_stats", S_IRUSR,
+ priv->debug.debugfs_phy,
+ priv, &fops_tgt_stats);
+ if (!priv->debug.debugfs_tgt_stats)
+ goto err;
+
+
+ priv->debug.debugfs_xmit = debugfs_create_file("xmit", S_IRUSR,
+ priv->debug.debugfs_phy,
+ priv, &fops_xmit);
+ if (!priv->debug.debugfs_xmit)
+ goto err;
+
+ priv->debug.debugfs_recv = debugfs_create_file("recv", S_IRUSR,
+ priv->debug.debugfs_phy,
+ priv, &fops_recv);
+ if (!priv->debug.debugfs_recv)
+ goto err;
+
+ return 0;
+
+err:
+ ath9k_htc_exit_debug(ah);
+ return -ENOMEM;
+}
+
+void ath9k_htc_exit_debug(struct ath_hw *ah)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
+
+ debugfs_remove(priv->debug.debugfs_recv);
+ debugfs_remove(priv->debug.debugfs_xmit);
+ debugfs_remove(priv->debug.debugfs_tgt_stats);
+ debugfs_remove(priv->debug.debugfs_phy);
+}
+
+int ath9k_htc_debug_create_root(void)
+{
+ ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
+ if (!ath9k_debugfs_root)
+ return -ENOENT;
+
+ return 0;
+}
+
+void ath9k_htc_debug_remove_root(void)
+{
+ debugfs_remove(ath9k_debugfs_root);
+ ath9k_debugfs_root = NULL;
+}
+
+#endif /* CONFIG_ATH9K_HTC_DEBUGFS */
+
+/*******/
+/* ANI */
+/*******/
+
+static void ath_start_ani(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ unsigned long timestamp = jiffies_to_msecs(jiffies);
+
+ common->ani.longcal_timer = timestamp;
+ common->ani.shortcal_timer = timestamp;
+ common->ani.checkani_timer = timestamp;
+
+ ieee80211_queue_delayed_work(common->hw, &priv->ath9k_ani_work,
+ msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
+}
+
+void ath9k_ani_work(struct work_struct *work)
+{
+ struct ath9k_htc_priv *priv =
+ container_of(work, struct ath9k_htc_priv,
+ ath9k_ani_work.work);
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ bool longcal = false;
+ bool shortcal = false;
+ bool aniflag = false;
+ unsigned int timestamp = jiffies_to_msecs(jiffies);
+ u32 cal_interval, short_cal_interval;
+
+ short_cal_interval = ATH_STA_SHORT_CALINTERVAL;
+
+ /* Only calibrate if awake */
+ if (ah->power_mode != ATH9K_PM_AWAKE)
+ goto set_timer;
+
+ /* Long calibration runs independently of short calibration. */
+ if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
+ longcal = true;
+ ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
+ common->ani.longcal_timer = timestamp;
+ }
+
+ /* Short calibration applies only while caldone is false */
+ if (!common->ani.caldone) {
+ if ((timestamp - common->ani.shortcal_timer) >=
+ short_cal_interval) {
+ shortcal = true;
+ ath_print(common, ATH_DBG_ANI,
+ "shortcal @%lu\n", jiffies);
+ common->ani.shortcal_timer = timestamp;
+ common->ani.resetcal_timer = timestamp;
+ }
+ } else {
+ if ((timestamp - common->ani.resetcal_timer) >=
+ ATH_RESTART_CALINTERVAL) {
+ common->ani.caldone = ath9k_hw_reset_calvalid(ah);
+ if (common->ani.caldone)
+ common->ani.resetcal_timer = timestamp;
+ }
+ }
+
+ /* Verify whether we must check ANI */
+ if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
+ aniflag = true;
+ common->ani.checkani_timer = timestamp;
+ }
+
+ /* Skip all processing if there's nothing to do. */
+ if (longcal || shortcal || aniflag) {
+
+ ath9k_htc_ps_wakeup(priv);
+
+ /* Call ANI routine if necessary */
+ if (aniflag)
+ ath9k_hw_ani_monitor(ah, ah->curchan);
+
+ /* Perform calibration if necessary */
+ if (longcal || shortcal) {
+ common->ani.caldone =
+ ath9k_hw_calibrate(ah, ah->curchan,
+ common->rx_chainmask,
+ longcal);
+
+ if (longcal)
+ common->ani.noise_floor =
+ ath9k_hw_getchan_noise(ah, ah->curchan);
+
+ ath_print(common, ATH_DBG_ANI,
+ " calibrate chan %u/%x nf: %d\n",
+ ah->curchan->channel,
+ ah->curchan->channelFlags,
+ common->ani.noise_floor);
+ }
+
+ ath9k_htc_ps_restore(priv);
+ }
+
+set_timer:
+ /*
+ * Set timer interval based on previous results.
+ * The interval must be the shortest necessary to satisfy ANI,
+ * short calibration and long calibration.
+ */
+ cal_interval = ATH_LONG_CALINTERVAL;
+ if (priv->ah->config.enable_ani)
+ cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
+ if (!common->ani.caldone)
+ cal_interval = min(cal_interval, (u32)short_cal_interval);
+
+ ieee80211_queue_delayed_work(common->hw, &priv->ath9k_ani_work,
+ msecs_to_jiffies(cal_interval));
+}
+
+/*******/
+/* LED */
+/*******/
+
+static void ath9k_led_blink_work(struct work_struct *work)
+{
+ struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
+ ath9k_led_blink_work.work);
+
+ if (!(priv->op_flags & OP_LED_ASSOCIATED))
+ return;
+
+ if ((priv->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
+ (priv->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
+ else
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
+ (priv->op_flags & OP_LED_ON) ? 1 : 0);
+
+ ieee80211_queue_delayed_work(priv->hw,
+ &priv->ath9k_led_blink_work,
+ (priv->op_flags & OP_LED_ON) ?
+ msecs_to_jiffies(priv->led_off_duration) :
+ msecs_to_jiffies(priv->led_on_duration));
+
+ priv->led_on_duration = priv->led_on_cnt ?
+ max((ATH_LED_ON_DURATION_IDLE - priv->led_on_cnt), 25) :
+ ATH_LED_ON_DURATION_IDLE;
+ priv->led_off_duration = priv->led_off_cnt ?
+ max((ATH_LED_OFF_DURATION_IDLE - priv->led_off_cnt), 10) :
+ ATH_LED_OFF_DURATION_IDLE;
+ priv->led_on_cnt = priv->led_off_cnt = 0;
+
+ if (priv->op_flags & OP_LED_ON)
+ priv->op_flags &= ~OP_LED_ON;
+ else
+ priv->op_flags |= OP_LED_ON;
+}
+
+static void ath9k_led_brightness_work(struct work_struct *work)
+{
+ struct ath_led *led = container_of(work, struct ath_led,
+ brightness_work.work);
+ struct ath9k_htc_priv *priv = led->priv;
+
+ switch (led->brightness) {
+ case LED_OFF:
+ if (led->led_type == ATH_LED_ASSOC ||
+ led->led_type == ATH_LED_RADIO) {
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
+ (led->led_type == ATH_LED_RADIO));
+ priv->op_flags &= ~OP_LED_ASSOCIATED;
+ if (led->led_type == ATH_LED_RADIO)
+ priv->op_flags &= ~OP_LED_ON;
+ } else {
+ priv->led_off_cnt++;
+ }
+ break;
+ case LED_FULL:
+ if (led->led_type == ATH_LED_ASSOC) {
+ priv->op_flags |= OP_LED_ASSOCIATED;
+ ieee80211_queue_delayed_work(priv->hw,
+ &priv->ath9k_led_blink_work, 0);
+ } else if (led->led_type == ATH_LED_RADIO) {
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
+ priv->op_flags |= OP_LED_ON;
+ } else {
+ priv->led_on_cnt++;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+static void ath9k_led_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+{
+ struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
+ struct ath9k_htc_priv *priv = led->priv;
+
+ led->brightness = brightness;
+ if (!(priv->op_flags & OP_LED_DEINIT))
+ ieee80211_queue_delayed_work(priv->hw,
+ &led->brightness_work, 0);
+}
+
+static void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv)
+{
+ cancel_delayed_work_sync(&priv->radio_led.brightness_work);
+ cancel_delayed_work_sync(&priv->assoc_led.brightness_work);
+ cancel_delayed_work_sync(&priv->tx_led.brightness_work);
+ cancel_delayed_work_sync(&priv->rx_led.brightness_work);
+}
+
+static int ath9k_register_led(struct ath9k_htc_priv *priv, struct ath_led *led,
+ char *trigger)
+{
+ int ret;
+
+ led->priv = priv;
+ led->led_cdev.name = led->name;
+ led->led_cdev.default_trigger = trigger;
+ led->led_cdev.brightness_set = ath9k_led_brightness;
+
+ ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_cdev);
+ if (ret)
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
+ "Failed to register led:%s", led->name);
+ else
+ led->registered = 1;
+
+ INIT_DELAYED_WORK(&led->brightness_work, ath9k_led_brightness_work);
+
+ return ret;
+}
+
+static void ath9k_unregister_led(struct ath_led *led)
+{
+ if (led->registered) {
+ led_classdev_unregister(&led->led_cdev);
+ led->registered = 0;
+ }
+}
+
+void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
+{
+ priv->op_flags |= OP_LED_DEINIT;
+ ath9k_unregister_led(&priv->assoc_led);
+ priv->op_flags &= ~OP_LED_ASSOCIATED;
+ ath9k_unregister_led(&priv->tx_led);
+ ath9k_unregister_led(&priv->rx_led);
+ ath9k_unregister_led(&priv->radio_led);
+}
+
+void ath9k_init_leds(struct ath9k_htc_priv *priv)
+{
+ char *trigger;
+ int ret;
+
+ if (AR_SREV_9287(priv->ah))
+ priv->ah->led_pin = ATH_LED_PIN_9287;
+ else if (AR_SREV_9271(priv->ah))
+ priv->ah->led_pin = ATH_LED_PIN_9271;
+ else
+ priv->ah->led_pin = ATH_LED_PIN_DEF;
+
+ /* Configure gpio 1 for output */
+ ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ /* LED off, active low */
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
+
+ INIT_DELAYED_WORK(&priv->ath9k_led_blink_work, ath9k_led_blink_work);
+
+ trigger = ieee80211_get_radio_led_name(priv->hw);
+ snprintf(priv->radio_led.name, sizeof(priv->radio_led.name),
+ "ath9k-%s::radio", wiphy_name(priv->hw->wiphy));
+ ret = ath9k_register_led(priv, &priv->radio_led, trigger);
+ priv->radio_led.led_type = ATH_LED_RADIO;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_assoc_led_name(priv->hw);
+ snprintf(priv->assoc_led.name, sizeof(priv->assoc_led.name),
+ "ath9k-%s::assoc", wiphy_name(priv->hw->wiphy));
+ ret = ath9k_register_led(priv, &priv->assoc_led, trigger);
+ priv->assoc_led.led_type = ATH_LED_ASSOC;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_tx_led_name(priv->hw);
+ snprintf(priv->tx_led.name, sizeof(priv->tx_led.name),
+ "ath9k-%s::tx", wiphy_name(priv->hw->wiphy));
+ ret = ath9k_register_led(priv, &priv->tx_led, trigger);
+ priv->tx_led.led_type = ATH_LED_TX;
+ if (ret)
+ goto fail;
+
+ trigger = ieee80211_get_rx_led_name(priv->hw);
+ snprintf(priv->rx_led.name, sizeof(priv->rx_led.name),
+ "ath9k-%s::rx", wiphy_name(priv->hw->wiphy));
+ ret = ath9k_register_led(priv, &priv->rx_led, trigger);
+ priv->rx_led.led_type = ATH_LED_RX;
+ if (ret)
+ goto fail;
+
+ priv->op_flags &= ~OP_LED_DEINIT;
+
+ return;
+
+fail:
+ cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
+ ath9k_deinit_leds(priv);
+}
+
+/*******************/
+/* Rfkill */
+/*******************/
+
+static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
+{
+ return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
+ priv->ah->rfkill_polarity;
+}
+
+static void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ bool blocked = !!ath_is_rfkill_set(priv);
+
+ wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
+}
+
+void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
+{
+ if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+ wiphy_rfkill_start_polling(priv->hw->wiphy);
+}
+
+/**********************/
+/* mac80211 Callbacks */
+/**********************/
+
+static int ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+ struct ath9k_htc_priv *priv = hw->priv;
+ int padpos, padsize, ret;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+
+ /* Add the padding after the header if this is not already done */
+ padpos = ath9k_cmn_padpos(hdr->frame_control);
+ padsize = padpos & 3;
+ if (padsize && skb->len > padpos) {
+ if (skb_headroom(skb) < padsize)
+ return -1;
+ skb_push(skb, padsize);
+ memmove(skb->data, skb->data + padsize, padpos);
+ }
+
+ ret = ath9k_htc_tx_start(priv, skb);
+ if (ret != 0) {
+ if (ret == -ENOMEM) {
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
+ "Stopping TX queues\n");
+ ieee80211_stop_queues(hw);
+ spin_lock_bh(&priv->tx_lock);
+ priv->tx_queues_stop = true;
+ spin_unlock_bh(&priv->tx_lock);
+ } else {
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
+ "Tx failed");
+ }
+ goto fail_tx;
+ }
+
+ return 0;
+
+fail_tx:
+ dev_kfree_skb_any(skb);
+ return 0;
+}
+
+static int ath9k_htc_radio_enable(struct ieee80211_hw *hw, bool led)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ struct ath9k_channel *init_channel;
+ int ret = 0;
+ enum htc_phymode mode;
+ __be16 htc_mode;
+ u8 cmd_rsp;
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "Starting driver with initial channel: %d MHz\n",
+ curchan->center_freq);
+
+ /* setup initial channel */
+ init_channel = ath9k_cmn_get_curchannel(hw, ah);
+
+ /* Reset SERDES registers */
+ ath9k_hw_configpcipowersave(ah, 0, 0);
+
+ ath9k_hw_htc_resetinit(ah);
+ ret = ath9k_hw_reset(ah, init_channel, false);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to reset hardware; reset status %d "
+ "(freq %u MHz)\n", ret, curchan->center_freq);
+ return ret;
+ }
+
+ ath_update_txpow(priv);
+
+ mode = ath9k_htc_get_curmode(priv, init_channel);
+ htc_mode = cpu_to_be16(mode);
+ WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
+ WMI_CMD(WMI_ATH_INIT_CMDID);
+ WMI_CMD(WMI_START_RECV_CMDID);
+
+ ath9k_host_rx_init(priv);
+
+ priv->op_flags &= ~OP_INVALID;
+ htc_start(priv->htc);
+
+ spin_lock_bh(&priv->tx_lock);
+ priv->tx_queues_stop = false;
+ spin_unlock_bh(&priv->tx_lock);
+
+ if (led) {
+ /* Enable LED */
+ ath9k_hw_cfg_output(ah, ah->led_pin,
+ AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
+ ath9k_hw_set_gpio(ah, ah->led_pin, 0);
+ }
+
+ ieee80211_wake_queues(hw);
+
+ return ret;
+}
+
+static int ath9k_htc_start(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ int ret = 0;
+
+ mutex_lock(&priv->mutex);
+ ret = ath9k_htc_radio_enable(hw, false);
+ mutex_unlock(&priv->mutex);
+
+ return ret;
+}
+
+static void ath9k_htc_radio_disable(struct ieee80211_hw *hw, bool led)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ int ret = 0;
+ u8 cmd_rsp;
+
+ if (priv->op_flags & OP_INVALID) {
+ ath_print(common, ATH_DBG_ANY, "Device not present\n");
+ return;
+ }
+
+ if (led) {
+ /* Disable LED */
+ ath9k_hw_set_gpio(ah, ah->led_pin, 1);
+ ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
+ }
+
+ /* Cancel all the running timers/work .. */
+ cancel_work_sync(&priv->ps_work);
+ cancel_delayed_work_sync(&priv->ath9k_ani_work);
+ cancel_delayed_work_sync(&priv->ath9k_aggr_work);
+ cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
+ ath9k_led_stop_brightness(priv);
+
+ ath9k_htc_ps_wakeup(priv);
+ htc_stop(priv->htc);
+ WMI_CMD(WMI_DISABLE_INTR_CMDID);
+ WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
+ WMI_CMD(WMI_STOP_RECV_CMDID);
+ ath9k_hw_phy_disable(ah);
+ ath9k_hw_disable(ah);
+ ath9k_hw_configpcipowersave(ah, 1, 1);
+ ath9k_htc_ps_restore(priv);
+ ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
+
+ skb_queue_purge(&priv->tx_queue);
+
+ /* Remove monitor interface here */
+ if (ah->opmode == NL80211_IFTYPE_MONITOR) {
+ if (ath9k_htc_remove_monitor_interface(priv))
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to remove monitor interface\n");
+ else
+ ath_print(common, ATH_DBG_CONFIG,
+ "Monitor interface removed\n");
+ }
+
+ priv->op_flags |= OP_INVALID;
+
+ ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
+}
+
+static void ath9k_htc_stop(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ mutex_lock(&priv->mutex);
+ ath9k_htc_radio_disable(hw, false);
+ mutex_unlock(&priv->mutex);
+}
+
+
+static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_target_vif hvif;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ mutex_lock(&priv->mutex);
+
+ /* Only one interface for now */
+ if (priv->nvifs > 0) {
+ ret = -ENOBUFS;
+ goto out;
+ }
+
+ ath9k_htc_ps_wakeup(priv);
+ memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
+ memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ hvif.opmode = cpu_to_be32(HTC_M_STA);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ hvif.opmode = cpu_to_be32(HTC_M_IBSS);
+ break;
+ default:
+ ath_print(common, ATH_DBG_FATAL,
+ "Interface type %d not yet supported\n", vif->type);
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "Attach a VIF of type: %d\n", vif->type);
+
+ priv->ah->opmode = vif->type;
+
+ /* Index starts from zero on the target */
+ avp->index = hvif.index = priv->nvifs;
+ hvif.rtsthreshold = cpu_to_be16(2304);
+ WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
+ if (ret)
+ goto out;
+
+ priv->nvifs++;
+
+ /*
+ * We need a node in target to tx mgmt frames
+ * before association.
+ */
+ ret = ath9k_htc_add_station(priv, vif, NULL);
+ if (ret)
+ goto out;
+
+ ret = ath9k_htc_update_cap_target(priv);
+ if (ret)
+ ath_print(common, ATH_DBG_CONFIG, "Failed to update"
+ " capability in target \n");
+
+ priv->vif = vif;
+out:
+ ath9k_htc_ps_restore(priv);
+ mutex_unlock(&priv->mutex);
+ return ret;
+}
+
+static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
+ struct ath9k_htc_target_vif hvif;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");
+
+ mutex_lock(&priv->mutex);
+
+ memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
+ memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
+ hvif.index = avp->index;
+ WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
+ priv->nvifs--;
+
+ ath9k_htc_remove_station(priv, vif, NULL);
+ priv->vif = NULL;
+
+ mutex_unlock(&priv->mutex);
+}
+
+static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ieee80211_conf *conf = &hw->conf;
+
+ mutex_lock(&priv->mutex);
+
+ if (changed & IEEE80211_CONF_CHANGE_IDLE) {
+ bool enable_radio = false;
+ bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
+
+ if (!idle && priv->ps_idle)
+ enable_radio = true;
+
+ priv->ps_idle = idle;
+
+ if (enable_radio) {
+ ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
+ ath9k_htc_radio_enable(hw, true);
+ ath_print(common, ATH_DBG_CONFIG,
+ "not-idle: enabling radio\n");
+ }
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ int pos = curchan->hw_value;
+ bool is_cw40 = false;
+
+ ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
+ curchan->center_freq);
+
+ if (check_rc_update(hw, &is_cw40))
+ ath9k_htc_rc_update(priv, is_cw40);
+
+ ath9k_cmn_update_ichannel(hw, &priv->ah->channels[pos]);
+
+ if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to set channel\n");
+ mutex_unlock(&priv->mutex);
+ return -EINVAL;
+ }
+
+ }
+ if (changed & IEEE80211_CONF_CHANGE_PS) {
+ if (conf->flags & IEEE80211_CONF_PS) {
+ ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
+ priv->ps_enabled = true;
+ } else {
+ priv->ps_enabled = false;
+ cancel_work_sync(&priv->ps_work);
+ ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
+ }
+ }
+
+ if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+ if (conf->flags & IEEE80211_CONF_MONITOR) {
+ if (ath9k_htc_add_monitor_interface(priv))
+ ath_print(common, ATH_DBG_FATAL,
+ "Failed to set monitor mode\n");
+ else
+ ath_print(common, ATH_DBG_CONFIG,
+ "HW opmode set to Monitor mode\n");
+ }
+ }
+
+ if (priv->ps_idle) {
+ ath_print(common, ATH_DBG_CONFIG,
+ "idle: disabling radio\n");
+ ath9k_htc_radio_disable(hw, true);
+ }
+
+ mutex_unlock(&priv->mutex);
+
+ return 0;
+}
+
+#define SUPPORTED_FILTERS \
+ (FIF_PROMISC_IN_BSS | \
+ FIF_ALLMULTI | \
+ FIF_CONTROL | \
+ FIF_PSPOLL | \
+ FIF_OTHER_BSS | \
+ FIF_BCN_PRBRESP_PROMISC | \
+ FIF_FCSFAIL)
+
+static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
+ unsigned int changed_flags,
+ unsigned int *total_flags,
+ u64 multicast)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ u32 rfilt;
+
+ mutex_lock(&priv->mutex);
+
+ ath9k_htc_ps_wakeup(priv);
+ changed_flags &= SUPPORTED_FILTERS;
+ *total_flags &= SUPPORTED_FILTERS;
+
+ priv->rxfilter = *total_flags;
+ rfilt = ath9k_htc_calcrxfilter(priv);
+ ath9k_hw_setrxfilter(priv->ah, rfilt);
+
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
+ "Set HW RX filter: 0x%x\n", rfilt);
+
+ ath9k_htc_ps_restore(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static void ath9k_htc_sta_notify(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd,
+ struct ieee80211_sta *sta)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ int ret;
+
+ mutex_lock(&priv->mutex);
+
+ switch (cmd) {
+ case STA_NOTIFY_ADD:
+ ret = ath9k_htc_add_station(priv, vif, sta);
+ if (!ret)
+ ath9k_htc_init_rate(priv, vif, sta);
+ break;
+ case STA_NOTIFY_REMOVE:
+ ath9k_htc_remove_station(priv, vif, sta);
+ break;
+ default:
+ break;
+ }
+
+ mutex_unlock(&priv->mutex);
+}
+
+static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, u16 queue,
+ const struct ieee80211_tx_queue_params *params)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_tx_queue_info qi;
+ int ret = 0, qnum;
+
+ if (queue >= WME_NUM_AC)
+ return 0;
+
+ mutex_lock(&priv->mutex);
+
+ memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
+
+ qi.tqi_aifs = params->aifs;
+ qi.tqi_cwmin = params->cw_min;
+ qi.tqi_cwmax = params->cw_max;
+ qi.tqi_burstTime = params->txop;
+
+ qnum = get_hw_qnum(queue, priv->hwq_map);
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "Configure tx [queue/hwq] [%d/%d], "
+ "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
+ queue, qnum, params->aifs, params->cw_min,
+ params->cw_max, params->txop);
+
+ ret = ath_htc_txq_update(priv, qnum, &qi);
+ if (ret)
+ ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
+
+ mutex_unlock(&priv->mutex);
+
+ return ret;
+}
+
+static int ath9k_htc_set_key(struct ieee80211_hw *hw,
+ enum set_key_cmd cmd,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int ret = 0;
+
+ if (htc_modparam_nohwcrypt)
+ return -ENOSPC;
+
+ mutex_lock(&priv->mutex);
+ ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
+ ath9k_htc_ps_wakeup(priv);
+
+ switch (cmd) {
+ case SET_KEY:
+ ret = ath9k_cmn_key_config(common, vif, sta, key);
+ if (ret >= 0) {
+ key->hw_key_idx = ret;
+ /* push IV and Michael MIC generation to stack */
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ if (key->alg == ALG_TKIP)
+ key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+ if (priv->ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
+ key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
+ ret = 0;
+ }
+ break;
+ case DISABLE_KEY:
+ ath9k_cmn_key_delete(common, key);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ ath9k_htc_ps_restore(priv);
+ mutex_unlock(&priv->mutex);
+
+ return ret;
+}
+
+static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+
+ mutex_lock(&priv->mutex);
+ ath9k_htc_ps_wakeup(priv);
+
+ if (changed & BSS_CHANGED_ASSOC) {
+ common->curaid = bss_conf->assoc ?
+ bss_conf->aid : 0;
+ ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
+ bss_conf->assoc);
+
+ if (bss_conf->assoc) {
+ priv->op_flags |= OP_ASSOCIATED;
+ ath_start_ani(priv);
+ } else {
+ priv->op_flags &= ~OP_ASSOCIATED;
+ cancel_work_sync(&priv->ps_work);
+ cancel_delayed_work_sync(&priv->ath9k_ani_work);
+ }
+ }
+
+ if (changed & BSS_CHANGED_BSSID) {
+ /* Set BSSID */
+ memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
+ ath9k_hw_write_associd(ah);
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "BSSID: %pM aid: 0x%x\n",
+ common->curbssid, common->curaid);
+ }
+
+ if ((changed & BSS_CHANGED_BEACON_INT) ||
+ (changed & BSS_CHANGED_BEACON) ||
+ ((changed & BSS_CHANGED_BEACON_ENABLED) &&
+ bss_conf->enable_beacon)) {
+ priv->op_flags |= OP_ENABLE_BEACON;
+ ath9k_htc_beacon_config(priv, vif);
+ }
+
+ if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
+ !bss_conf->enable_beacon) {
+ priv->op_flags &= ~OP_ENABLE_BEACON;
+ ath9k_htc_beacon_config(priv, vif);
+ }
+
+ if (changed & BSS_CHANGED_ERP_PREAMBLE) {
+ ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
+ bss_conf->use_short_preamble);
+ if (bss_conf->use_short_preamble)
+ priv->op_flags |= OP_PREAMBLE_SHORT;
+ else
+ priv->op_flags &= ~OP_PREAMBLE_SHORT;
+ }
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT) {
+ ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
+ bss_conf->use_cts_prot);
+ if (bss_conf->use_cts_prot &&
+ hw->conf.channel->band != IEEE80211_BAND_5GHZ)
+ priv->op_flags |= OP_PROTECT_ENABLE;
+ else
+ priv->op_flags &= ~OP_PROTECT_ENABLE;
+ }
+
+ if (changed & BSS_CHANGED_ERP_SLOT) {
+ if (bss_conf->use_short_slot)
+ ah->slottime = 9;
+ else
+ ah->slottime = 20;
+
+ ath9k_hw_init_global_settings(ah);
+ }
+
+ ath9k_htc_ps_restore(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ u64 tsf;
+
+ mutex_lock(&priv->mutex);
+ tsf = ath9k_hw_gettsf64(priv->ah);
+ mutex_unlock(&priv->mutex);
+
+ return tsf;
+}
+
+static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, u64 tsf)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ mutex_lock(&priv->mutex);
+ ath9k_hw_settsf64(priv->ah, tsf);
+ mutex_unlock(&priv->mutex);
+}
+
+static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ ath9k_htc_ps_wakeup(priv);
+ mutex_lock(&priv->mutex);
+ ath9k_hw_reset_tsf(priv->ah);
+ mutex_unlock(&priv->mutex);
+ ath9k_htc_ps_restore(priv);
+}
+
+static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ enum ieee80211_ampdu_mlme_action action,
+ struct ieee80211_sta *sta,
+ u16 tid, u16 *ssn)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+ struct ath9k_htc_aggr_work *work = &priv->aggr_work;
+ struct ath9k_htc_sta *ista;
+
+ switch (action) {
+ case IEEE80211_AMPDU_RX_START:
+ break;
+ case IEEE80211_AMPDU_RX_STOP:
+ break;
+ case IEEE80211_AMPDU_TX_START:
+ case IEEE80211_AMPDU_TX_STOP:
+ if (!(priv->op_flags & OP_TXAGGR))
+ return -ENOTSUPP;
+ memcpy(work->sta_addr, sta->addr, ETH_ALEN);
+ work->hw = hw;
+ work->vif = vif;
+ work->action = action;
+ work->tid = tid;
+ ieee80211_queue_delayed_work(hw, &priv->ath9k_aggr_work, 0);
+ break;
+ case IEEE80211_AMPDU_TX_OPERATIONAL:
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ ista->tid_state[tid] = AGGR_OPERATIONAL;
+ break;
+ default:
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
+ "Unknown AMPDU action\n");
+ }
+
+ return 0;
+}
+
+static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ mutex_lock(&priv->mutex);
+ spin_lock_bh(&priv->beacon_lock);
+ priv->op_flags |= OP_SCANNING;
+ spin_unlock_bh(&priv->beacon_lock);
+ cancel_work_sync(&priv->ps_work);
+ cancel_delayed_work_sync(&priv->ath9k_ani_work);
+ mutex_unlock(&priv->mutex);
+}
+
+static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ ath9k_htc_ps_wakeup(priv);
+ mutex_lock(&priv->mutex);
+ spin_lock_bh(&priv->beacon_lock);
+ priv->op_flags &= ~OP_SCANNING;
+ spin_unlock_bh(&priv->beacon_lock);
+ priv->op_flags |= OP_FULL_RESET;
+ if (priv->op_flags & OP_ASSOCIATED)
+ ath9k_htc_beacon_config(priv, priv->vif);
+ ath_start_ani(priv);
+ mutex_unlock(&priv->mutex);
+ ath9k_htc_ps_restore(priv);
+}
+
+static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
+{
+ return 0;
+}
+
+static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
+ u8 coverage_class)
+{
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ mutex_lock(&priv->mutex);
+ priv->ah->coverage_class = coverage_class;
+ ath9k_hw_init_global_settings(priv->ah);
+ mutex_unlock(&priv->mutex);
+}
+
+struct ieee80211_ops ath9k_htc_ops = {
+ .tx = ath9k_htc_tx,
+ .start = ath9k_htc_start,
+ .stop = ath9k_htc_stop,
+ .add_interface = ath9k_htc_add_interface,
+ .remove_interface = ath9k_htc_remove_interface,
+ .config = ath9k_htc_config,
+ .configure_filter = ath9k_htc_configure_filter,
+ .sta_notify = ath9k_htc_sta_notify,
+ .conf_tx = ath9k_htc_conf_tx,
+ .bss_info_changed = ath9k_htc_bss_info_changed,
+ .set_key = ath9k_htc_set_key,
+ .get_tsf = ath9k_htc_get_tsf,
+ .set_tsf = ath9k_htc_set_tsf,
+ .reset_tsf = ath9k_htc_reset_tsf,
+ .ampdu_action = ath9k_htc_ampdu_action,
+ .sw_scan_start = ath9k_htc_sw_scan_start,
+ .sw_scan_complete = ath9k_htc_sw_scan_complete,
+ .set_rts_threshold = ath9k_htc_set_rts_threshold,
+ .rfkill_poll = ath9k_htc_rfkill_poll_state,
+ .set_coverage_class = ath9k_htc_set_coverage_class,
+};