depends on CFG80211
---help---
This will enable the support for the Atheros wireless drivers.
- ath5k, ath9k and ar9170 drivers share some common code, this option
+ ath5k, ath9k, ath9k_htc and ar9170 drivers share some common code, this option
enables the common ath.ko module which shares common helpers.
For more information and documentation on this module you can visit:
Also required for changing debug message flags at run time.
+config ATH9K_HTC
+ tristate "Atheros HTC based wireless cards support"
+ depends on USB && MAC80211
+ select ATH9K_HW
+ select MAC80211_LEDS
+ select LEDS_CLASS
+ select NEW_LEDS
+ select ATH9K_COMMON
+ ---help---
+ Support for Atheros HTC based cards.
+ Chipsets supported: AR9271
+
+ For more information: http://wireless.kernel.org/en/users/Drivers/ath9k_htc
+
+ The built module will be ath9k_htc.
+
+config ATH9K_HTC_DEBUGFS
+ bool "Atheros ath9k_htc debugging"
+ depends on ATH9K_HTC && DEBUG_FS
+ ---help---
+ Say Y, if you need access to ath9k_htc's statistics.
obj-$(CONFIG_ATH9K_COMMON) += ath9k_common.o
ath9k_common-y:= common.o
+
+ath9k_htc-y += htc_hst.o \
+ hif_usb.o \
+ wmi.o \
+ htc_drv_txrx.o \
+ htc_drv_main.o \
+ htc_drv_beacon.o \
+ htc_drv_init.o
+
+obj-$(CONFIG_ATH9K_HTC) += ath9k_htc.o
}
EXPORT_SYMBOL(ath9k_cmn_padpos);
+int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+
+ if (tx_info->control.hw_key) {
+ if (tx_info->control.hw_key->alg == ALG_WEP)
+ return ATH9K_KEY_TYPE_WEP;
+ else if (tx_info->control.hw_key->alg == ALG_TKIP)
+ return ATH9K_KEY_TYPE_TKIP;
+ else if (tx_info->control.hw_key->alg == ALG_CCMP)
+ return ATH9K_KEY_TYPE_AES;
+ }
+
+ return ATH9K_KEY_TYPE_CLEAR;
+}
+EXPORT_SYMBOL(ath9k_cmn_get_hw_crypto_keytype);
+
+/*
+ * Calculate the RX filter to be set in the HW.
+ */
+u32 ath9k_cmn_calcrxfilter(struct ieee80211_hw *hw, struct ath_hw *ah,
+ unsigned int rxfilter)
+{
+#define RX_FILTER_PRESERVE (ATH9K_RX_FILTER_PHYERR | ATH9K_RX_FILTER_PHYRADAR)
+
+ u32 rfilt;
+
+ rfilt = (ath9k_hw_getrxfilter(ah) & RX_FILTER_PRESERVE)
+ | ATH9K_RX_FILTER_UCAST | ATH9K_RX_FILTER_BCAST
+ | ATH9K_RX_FILTER_MCAST;
+
+ /* If not a STA, enable processing of Probe Requests */
+ if (ah->opmode != NL80211_IFTYPE_STATION)
+ rfilt |= ATH9K_RX_FILTER_PROBEREQ;
+
+ /*
+ * Set promiscuous mode when FIF_PROMISC_IN_BSS is enabled for station
+ * mode interface or when in monitor mode. AP mode does not need this
+ * since it receives all in-BSS frames anyway.
+ */
+ if (((ah->opmode != NL80211_IFTYPE_AP) &&
+ (rxfilter & FIF_PROMISC_IN_BSS)) ||
+ (ah->opmode == NL80211_IFTYPE_MONITOR))
+ rfilt |= ATH9K_RX_FILTER_PROM;
+
+ if (rxfilter & FIF_CONTROL)
+ rfilt |= ATH9K_RX_FILTER_CONTROL;
+
+ if ((ah->opmode == NL80211_IFTYPE_STATION) &&
+ !(rxfilter & FIF_BCN_PRBRESP_PROMISC))
+ rfilt |= ATH9K_RX_FILTER_MYBEACON;
+ else
+ rfilt |= ATH9K_RX_FILTER_BEACON;
+
+ if ((AR_SREV_9280_10_OR_LATER(ah) ||
+ AR_SREV_9285_10_OR_LATER(ah)) &&
+ (ah->opmode == NL80211_IFTYPE_AP) &&
+ (rxfilter & FIF_PSPOLL))
+ rfilt |= ATH9K_RX_FILTER_PSPOLL;
+
+ if (conf_is_ht(&hw->conf))
+ rfilt |= ATH9K_RX_FILTER_COMP_BAR;
+
+ return rfilt;
+
+#undef RX_FILTER_PRESERVE
+}
+EXPORT_SYMBOL(ath9k_cmn_calcrxfilter);
+
+/*
+ * Recv initialization for opmode change.
+ */
+void ath9k_cmn_opmode_init(struct ieee80211_hw *hw, struct ath_hw *ah,
+ unsigned int rxfilter)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+
+ u32 rfilt, mfilt[2];
+
+ /* configure rx filter */
+ rfilt = ath9k_cmn_calcrxfilter(hw, ah, rxfilter);
+ ath9k_hw_setrxfilter(ah, rfilt);
+
+ /* configure bssid mask */
+ if (ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
+ ath_hw_setbssidmask(common);
+
+ /* configure operational mode */
+ ath9k_hw_setopmode(ah);
+
+ /* Handle any link-level address change. */
+ ath9k_hw_setmac(ah, common->macaddr);
+
+ /* calculate and install multicast filter */
+ mfilt[0] = mfilt[1] = ~0;
+ ath9k_hw_setmcastfilter(ah, mfilt[0], mfilt[1]);
+}
+EXPORT_SYMBOL(ath9k_cmn_opmode_init);
+
+static u32 ath9k_get_extchanmode(struct ieee80211_channel *chan,
+ enum nl80211_channel_type channel_type)
+{
+ u32 chanmode = 0;
+
+ switch (chan->band) {
+ case IEEE80211_BAND_2GHZ:
+ switch (channel_type) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ chanmode = CHANNEL_G_HT20;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ chanmode = CHANNEL_G_HT40PLUS;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ chanmode = CHANNEL_G_HT40MINUS;
+ break;
+ }
+ break;
+ case IEEE80211_BAND_5GHZ:
+ switch (channel_type) {
+ case NL80211_CHAN_NO_HT:
+ case NL80211_CHAN_HT20:
+ chanmode = CHANNEL_A_HT20;
+ break;
+ case NL80211_CHAN_HT40PLUS:
+ chanmode = CHANNEL_A_HT40PLUS;
+ break;
+ case NL80211_CHAN_HT40MINUS:
+ chanmode = CHANNEL_A_HT40MINUS;
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return chanmode;
+}
+
+/*
+ * Update internal channel flags.
+ */
+void ath9k_cmn_update_ichannel(struct ieee80211_hw *hw,
+ struct ath9k_channel *ichan)
+{
+ struct ieee80211_channel *chan = hw->conf.channel;
+ struct ieee80211_conf *conf = &hw->conf;
+
+ ichan->channel = chan->center_freq;
+ ichan->chan = chan;
+
+ if (chan->band == IEEE80211_BAND_2GHZ) {
+ ichan->chanmode = CHANNEL_G;
+ ichan->channelFlags = CHANNEL_2GHZ | CHANNEL_OFDM | CHANNEL_G;
+ } else {
+ ichan->chanmode = CHANNEL_A;
+ ichan->channelFlags = CHANNEL_5GHZ | CHANNEL_OFDM;
+ }
+
+ if (conf_is_ht(conf))
+ ichan->chanmode = ath9k_get_extchanmode(chan,
+ conf->channel_type);
+}
+EXPORT_SYMBOL(ath9k_cmn_update_ichannel);
+
+/*
+ * Get the internal channel reference.
+ */
+struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
+ struct ath_hw *ah)
+{
+ struct ieee80211_channel *curchan = hw->conf.channel;
+ struct ath9k_channel *channel;
+ u8 chan_idx;
+
+ chan_idx = curchan->hw_value;
+ channel = &ah->channels[chan_idx];
+ ath9k_cmn_update_ichannel(hw, channel);
+
+ return channel;
+}
+EXPORT_SYMBOL(ath9k_cmn_get_curchannel);
+
+static int ath_setkey_tkip(struct ath_common *common, u16 keyix, const u8 *key,
+ struct ath9k_keyval *hk, const u8 *addr,
+ bool authenticator)
+{
+ struct ath_hw *ah = common->ah;
+ const u8 *key_rxmic;
+ const u8 *key_txmic;
+
+ key_txmic = key + NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
+ key_rxmic = key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
+
+ if (addr == NULL) {
+ /*
+ * Group key installation - only two key cache entries are used
+ * regardless of splitmic capability since group key is only
+ * used either for TX or RX.
+ */
+ if (authenticator) {
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_mic));
+ } else {
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_rxmic, sizeof(hk->kv_mic));
+ }
+ return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
+ }
+ if (!common->splitmic) {
+ /* TX and RX keys share the same key cache entry. */
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ memcpy(hk->kv_txmic, key_txmic, sizeof(hk->kv_txmic));
+ return ath9k_hw_set_keycache_entry(ah, keyix, hk, addr);
+ }
+
+ /* Separate key cache entries for TX and RX */
+
+ /* TX key goes at first index, RX key at +32. */
+ memcpy(hk->kv_mic, key_txmic, sizeof(hk->kv_mic));
+ if (!ath9k_hw_set_keycache_entry(ah, keyix, hk, NULL)) {
+ /* TX MIC entry failed. No need to proceed further */
+ ath_print(common, ATH_DBG_FATAL,
+ "Setting TX MIC Key Failed\n");
+ return 0;
+ }
+
+ memcpy(hk->kv_mic, key_rxmic, sizeof(hk->kv_mic));
+ /* XXX delete tx key on failure? */
+ return ath9k_hw_set_keycache_entry(ah, keyix + 32, hk, addr);
+}
+
+static int ath_reserve_key_cache_slot_tkip(struct ath_common *common)
+{
+ int i;
+
+ for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
+ if (test_bit(i, common->keymap) ||
+ test_bit(i + 64, common->keymap))
+ continue; /* At least one part of TKIP key allocated */
+ if (common->splitmic &&
+ (test_bit(i + 32, common->keymap) ||
+ test_bit(i + 64 + 32, common->keymap)))
+ continue; /* At least one part of TKIP key allocated */
+
+ /* Found a free slot for a TKIP key */
+ return i;
+ }
+ return -1;
+}
+
+static int ath_reserve_key_cache_slot(struct ath_common *common)
+{
+ int i;
+
+ /* First, try to find slots that would not be available for TKIP. */
+ if (common->splitmic) {
+ for (i = IEEE80211_WEP_NKID; i < common->keymax / 4; i++) {
+ if (!test_bit(i, common->keymap) &&
+ (test_bit(i + 32, common->keymap) ||
+ test_bit(i + 64, common->keymap) ||
+ test_bit(i + 64 + 32, common->keymap)))
+ return i;
+ if (!test_bit(i + 32, common->keymap) &&
+ (test_bit(i, common->keymap) ||
+ test_bit(i + 64, common->keymap) ||
+ test_bit(i + 64 + 32, common->keymap)))
+ return i + 32;
+ if (!test_bit(i + 64, common->keymap) &&
+ (test_bit(i , common->keymap) ||
+ test_bit(i + 32, common->keymap) ||
+ test_bit(i + 64 + 32, common->keymap)))
+ return i + 64;
+ if (!test_bit(i + 64 + 32, common->keymap) &&
+ (test_bit(i, common->keymap) ||
+ test_bit(i + 32, common->keymap) ||
+ test_bit(i + 64, common->keymap)))
+ return i + 64 + 32;
+ }
+ } else {
+ for (i = IEEE80211_WEP_NKID; i < common->keymax / 2; i++) {
+ if (!test_bit(i, common->keymap) &&
+ test_bit(i + 64, common->keymap))
+ return i;
+ if (test_bit(i, common->keymap) &&
+ !test_bit(i + 64, common->keymap))
+ return i + 64;
+ }
+ }
+
+ /* No partially used TKIP slots, pick any available slot */
+ for (i = IEEE80211_WEP_NKID; i < common->keymax; i++) {
+ /* Do not allow slots that could be needed for TKIP group keys
+ * to be used. This limitation could be removed if we know that
+ * TKIP will not be used. */
+ if (i >= 64 && i < 64 + IEEE80211_WEP_NKID)
+ continue;
+ if (common->splitmic) {
+ if (i >= 32 && i < 32 + IEEE80211_WEP_NKID)
+ continue;
+ if (i >= 64 + 32 && i < 64 + 32 + IEEE80211_WEP_NKID)
+ continue;
+ }
+
+ if (!test_bit(i, common->keymap))
+ return i; /* Found a free slot for a key */
+ }
+
+ /* No free slot found */
+ return -1;
+}
+
+/*
+ * Configure encryption in the HW.
+ */
+int ath9k_cmn_key_config(struct ath_common *common,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key)
+{
+ struct ath_hw *ah = common->ah;
+ struct ath9k_keyval hk;
+ const u8 *mac = NULL;
+ int ret = 0;
+ int idx;
+
+ memset(&hk, 0, sizeof(hk));
+
+ switch (key->alg) {
+ case ALG_WEP:
+ hk.kv_type = ATH9K_CIPHER_WEP;
+ break;
+ case ALG_TKIP:
+ hk.kv_type = ATH9K_CIPHER_TKIP;
+ break;
+ case ALG_CCMP:
+ hk.kv_type = ATH9K_CIPHER_AES_CCM;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ hk.kv_len = key->keylen;
+ memcpy(hk.kv_val, key->key, key->keylen);
+
+ if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+ /* For now, use the default keys for broadcast keys. This may
+ * need to change with virtual interfaces. */
+ idx = key->keyidx;
+ } else if (key->keyidx) {
+ if (WARN_ON(!sta))
+ return -EOPNOTSUPP;
+ mac = sta->addr;
+
+ if (vif->type != NL80211_IFTYPE_AP) {
+ /* Only keyidx 0 should be used with unicast key, but
+ * allow this for client mode for now. */
+ idx = key->keyidx;
+ } else
+ return -EIO;
+ } else {
+ if (WARN_ON(!sta))
+ return -EOPNOTSUPP;
+ mac = sta->addr;
+
+ if (key->alg == ALG_TKIP)
+ idx = ath_reserve_key_cache_slot_tkip(common);
+ else
+ idx = ath_reserve_key_cache_slot(common);
+ if (idx < 0)
+ return -ENOSPC; /* no free key cache entries */
+ }
+
+ if (key->alg == ALG_TKIP)
+ ret = ath_setkey_tkip(common, idx, key->key, &hk, mac,
+ vif->type == NL80211_IFTYPE_AP);
+ else
+ ret = ath9k_hw_set_keycache_entry(ah, idx, &hk, mac);
+
+ if (!ret)
+ return -EIO;
+
+ set_bit(idx, common->keymap);
+ if (key->alg == ALG_TKIP) {
+ set_bit(idx + 64, common->keymap);
+ if (common->splitmic) {
+ set_bit(idx + 32, common->keymap);
+ set_bit(idx + 64 + 32, common->keymap);
+ }
+ }
+
+ return idx;
+}
+EXPORT_SYMBOL(ath9k_cmn_key_config);
+
+/*
+ * Delete Key.
+ */
+void ath9k_cmn_key_delete(struct ath_common *common,
+ struct ieee80211_key_conf *key)
+{
+ struct ath_hw *ah = common->ah;
+
+ ath9k_hw_keyreset(ah, key->hw_key_idx);
+ if (key->hw_key_idx < IEEE80211_WEP_NKID)
+ return;
+
+ clear_bit(key->hw_key_idx, common->keymap);
+ if (key->alg != ALG_TKIP)
+ return;
+
+ clear_bit(key->hw_key_idx + 64, common->keymap);
+ if (common->splitmic) {
+ ath9k_hw_keyreset(ah, key->hw_key_idx + 32);
+ clear_bit(key->hw_key_idx + 32, common->keymap);
+ clear_bit(key->hw_key_idx + 64 + 32, common->keymap);
+ }
+}
+EXPORT_SYMBOL(ath9k_cmn_key_delete);
+
static int __init ath9k_cmn_init(void)
{
return 0;
/* Common header for Atheros 802.11n base driver cores */
+#define IEEE80211_WEP_NKID 4
+
#define WME_NUM_TID 16
#define WME_BA_BMP_SIZE 64
#define WME_MAX_BA WME_BA_BMP_SIZE
bool decrypt_error);
int ath9k_cmn_padpos(__le16 frame_control);
+int ath9k_cmn_get_hw_crypto_keytype(struct sk_buff *skb);
+u32 ath9k_cmn_calcrxfilter(struct ieee80211_hw *hw, struct ath_hw *ah,
+ unsigned int rxfilter);
+void ath9k_cmn_opmode_init(struct ieee80211_hw *hw, struct ath_hw *ah,
+ unsigned int rxfilter);
+void ath9k_cmn_update_ichannel(struct ieee80211_hw *hw,
+ struct ath9k_channel *ichan);
+struct ath9k_channel *ath9k_cmn_get_curchannel(struct ieee80211_hw *hw,
+ struct ath_hw *ah);
+int ath9k_cmn_key_config(struct ath_common *common,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_key_conf *key);
+void ath9k_cmn_key_delete(struct ath_common *common,
+ struct ieee80211_key_conf *key);
--- /dev/null
+/*
+ * 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"
+
+#define ATH9K_FW_USB_DEV(devid, fw) \
+ { USB_DEVICE(0x0cf3, devid), .driver_info = (unsigned long) fw }
+
+static struct usb_device_id ath9k_hif_usb_ids[] = {
+ ATH9K_FW_USB_DEV(0x9271, "ar9271.fw"),
+ { },
+};
+
+MODULE_DEVICE_TABLE(usb, ath9k_hif_usb_ids);
+
+static int __hif_usb_tx(struct hif_device_usb *hif_dev);
+
+static void hif_usb_regout_cb(struct urb *urb)
+{
+ struct cmd_buf *cmd = (struct cmd_buf *)urb->context;
+ struct hif_device_usb *hif_dev = cmd->hif_dev;
+
+ if (!hif_dev) {
+ usb_free_urb(urb);
+ if (cmd) {
+ if (cmd->skb)
+ dev_kfree_skb_any(cmd->skb);
+ kfree(cmd);
+ }
+ return;
+ }
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ break;
+ case -ENODEV:
+ case -ESHUTDOWN:
+ return;
+ default:
+ break;
+ }
+
+ if (cmd) {
+ ath9k_htc_txcompletion_cb(cmd->hif_dev->htc_handle,
+ cmd->skb, 1);
+ kfree(cmd);
+ usb_free_urb(urb);
+ }
+}
+
+static int hif_usb_send_regout(struct hif_device_usb *hif_dev,
+ struct sk_buff *skb)
+{
+ struct urb *urb;
+ struct cmd_buf *cmd;
+ int ret = 0;
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (urb == NULL)
+ return -ENOMEM;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL) {
+ usb_free_urb(urb);
+ return -ENOMEM;
+ }
+
+ cmd->skb = skb;
+ cmd->hif_dev = hif_dev;
+
+ usb_fill_int_urb(urb, hif_dev->udev,
+ usb_sndintpipe(hif_dev->udev, USB_REG_OUT_PIPE),
+ skb->data, skb->len,
+ hif_usb_regout_cb, cmd, 1);
+
+ ret = usb_submit_urb(urb, GFP_KERNEL);
+ if (ret) {
+ usb_free_urb(urb);
+ kfree(cmd);
+ }
+
+ return ret;
+}
+
+static void hif_usb_tx_cb(struct urb *urb)
+{
+ struct tx_buf *tx_buf = (struct tx_buf *) urb->context;
+ struct hif_device_usb *hif_dev = tx_buf->hif_dev;
+ struct sk_buff *skb;
+ bool drop, flush;
+
+ if (!hif_dev)
+ return;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ break;
+ case -ENODEV:
+ case -ESHUTDOWN:
+ return;
+ default:
+ break;
+ }
+
+ if (tx_buf) {
+ spin_lock(&hif_dev->tx.tx_lock);
+ drop = !!(hif_dev->tx.flags & HIF_USB_TX_STOP);
+ flush = !!(hif_dev->tx.flags & HIF_USB_TX_FLUSH);
+ spin_unlock(&hif_dev->tx.tx_lock);
+
+ while ((skb = __skb_dequeue(&tx_buf->skb_queue)) != NULL) {
+ if (!drop && !flush) {
+ ath9k_htc_txcompletion_cb(hif_dev->htc_handle,
+ skb, 1);
+ TX_STAT_INC(skb_completed);
+ } else {
+ dev_kfree_skb_any(skb);
+ }
+ }
+
+ if (flush)
+ return;
+
+ tx_buf->len = tx_buf->offset = 0;
+ __skb_queue_head_init(&tx_buf->skb_queue);
+
+ spin_lock(&hif_dev->tx.tx_lock);
+ list_del(&tx_buf->list);
+ list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
+ hif_dev->tx.tx_buf_cnt++;
+ if (!drop)
+ __hif_usb_tx(hif_dev); /* Check for pending SKBs */
+ TX_STAT_INC(buf_completed);
+ spin_unlock(&hif_dev->tx.tx_lock);
+ }
+}
+
+/* TX lock has to be taken */
+static int __hif_usb_tx(struct hif_device_usb *hif_dev)
+{
+ struct tx_buf *tx_buf = NULL;
+ struct sk_buff *nskb = NULL;
+ int ret = 0, i;
+ u16 *hdr, tx_skb_cnt = 0;
+ u8 *buf;
+
+ if (hif_dev->tx.tx_skb_cnt == 0)
+ return 0;
+
+ /* Check if a free TX buffer is available */
+ if (list_empty(&hif_dev->tx.tx_buf))
+ return 0;
+
+ tx_buf = list_first_entry(&hif_dev->tx.tx_buf, struct tx_buf, list);
+ list_del(&tx_buf->list);
+ list_add_tail(&tx_buf->list, &hif_dev->tx.tx_pending);
+ hif_dev->tx.tx_buf_cnt--;
+
+ tx_skb_cnt = min_t(u16, hif_dev->tx.tx_skb_cnt, MAX_TX_AGGR_NUM);
+
+ for (i = 0; i < tx_skb_cnt; i++) {
+ nskb = __skb_dequeue(&hif_dev->tx.tx_skb_queue);
+
+ /* Should never be NULL */
+ BUG_ON(!nskb);
+
+ hif_dev->tx.tx_skb_cnt--;
+
+ buf = tx_buf->buf;
+ buf += tx_buf->offset;
+ hdr = (u16 *)buf;
+ *hdr++ = nskb->len;
+ *hdr++ = ATH_USB_TX_STREAM_MODE_TAG;
+ buf += 4;
+ memcpy(buf, nskb->data, nskb->len);
+ tx_buf->len = nskb->len + 4;
+
+ if (i < (tx_skb_cnt - 1))
+ tx_buf->offset += (((tx_buf->len - 1) / 4) + 1) * 4;
+
+ if (i == (tx_skb_cnt - 1))
+ tx_buf->len += tx_buf->offset;
+
+ __skb_queue_tail(&tx_buf->skb_queue, nskb);
+ TX_STAT_INC(skb_queued);
+ }
+
+ usb_fill_bulk_urb(tx_buf->urb, hif_dev->udev,
+ usb_sndbulkpipe(hif_dev->udev, USB_WLAN_TX_PIPE),
+ tx_buf->buf, tx_buf->len,
+ hif_usb_tx_cb, tx_buf);
+
+ ret = usb_submit_urb(tx_buf->urb, GFP_ATOMIC);
+ if (ret) {
+ tx_buf->len = tx_buf->offset = 0;
+ __skb_queue_purge(&tx_buf->skb_queue);
+ __skb_queue_head_init(&tx_buf->skb_queue);
+ list_move_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
+ hif_dev->tx.tx_buf_cnt++;
+ }
+
+ if (!ret)
+ TX_STAT_INC(buf_queued);
+
+ return ret;
+}
+
+static int hif_usb_send_tx(struct hif_device_usb *hif_dev, struct sk_buff *skb,
+ struct ath9k_htc_tx_ctl *tx_ctl)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
+
+ if (hif_dev->tx.flags & HIF_USB_TX_STOP) {
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+ return -ENODEV;
+ }
+
+ /* Check if the max queue count has been reached */
+ if (hif_dev->tx.tx_skb_cnt > MAX_TX_BUF_NUM) {
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+ return -ENOMEM;
+ }
+
+ __skb_queue_tail(&hif_dev->tx.tx_skb_queue, skb);
+ hif_dev->tx.tx_skb_cnt++;
+
+ /* Send normal frames immediately */
+ if (!tx_ctl || (tx_ctl && (tx_ctl->type == ATH9K_HTC_NORMAL)))
+ __hif_usb_tx(hif_dev);
+
+ /* Check if AMPDUs have to be sent immediately */
+ if (tx_ctl && (tx_ctl->type == ATH9K_HTC_AMPDU) &&
+ (hif_dev->tx.tx_buf_cnt == MAX_TX_URB_NUM) &&
+ (hif_dev->tx.tx_skb_cnt < 2)) {
+ __hif_usb_tx(hif_dev);
+ }
+
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+
+ return 0;
+}
+
+static void hif_usb_start(void *hif_handle, u8 pipe_id)
+{
+ struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
+ unsigned long flags;
+
+ hif_dev->flags |= HIF_USB_START;
+
+ spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
+ hif_dev->tx.flags &= ~HIF_USB_TX_STOP;
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+}
+
+static void hif_usb_stop(void *hif_handle, u8 pipe_id)
+{
+ struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
+ unsigned long flags;
+
+ spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
+ __skb_queue_purge(&hif_dev->tx.tx_skb_queue);
+ hif_dev->tx.tx_skb_cnt = 0;
+ hif_dev->tx.flags |= HIF_USB_TX_STOP;
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+}
+
+static int hif_usb_send(void *hif_handle, u8 pipe_id, struct sk_buff *skb,
+ struct ath9k_htc_tx_ctl *tx_ctl)
+{
+ struct hif_device_usb *hif_dev = (struct hif_device_usb *)hif_handle;
+ int ret = 0;
+
+ switch (pipe_id) {
+ case USB_WLAN_TX_PIPE:
+ ret = hif_usb_send_tx(hif_dev, skb, tx_ctl);
+ break;
+ case USB_REG_OUT_PIPE:
+ ret = hif_usb_send_regout(hif_dev, skb);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static struct ath9k_htc_hif hif_usb = {
+ .transport = ATH9K_HIF_USB,
+ .name = "ath9k_hif_usb",
+
+ .control_ul_pipe = USB_REG_OUT_PIPE,
+ .control_dl_pipe = USB_REG_IN_PIPE,
+
+ .start = hif_usb_start,
+ .stop = hif_usb_stop,
+ .send = hif_usb_send,
+};
+
+static void ath9k_hif_usb_rx_stream(struct hif_device_usb *hif_dev,
+ struct sk_buff *skb)
+{
+ struct sk_buff *nskb, *skb_pool[8];
+ int index = 0, i = 0, chk_idx, len = skb->len;
+ int rx_remain_len = 0, rx_pkt_len = 0;
+ u16 pkt_len, pkt_tag, pool_index = 0;
+ u8 *ptr;
+
+ rx_remain_len = hif_dev->rx_remain_len;
+ rx_pkt_len = hif_dev->rx_transfer_len;
+
+ if (rx_remain_len != 0) {
+ struct sk_buff *remain_skb = hif_dev->remain_skb;
+
+ if (remain_skb) {
+ ptr = (u8 *) remain_skb->data;
+
+ index = rx_remain_len;
+ rx_remain_len -= hif_dev->rx_pad_len;
+ ptr += rx_pkt_len;
+
+ memcpy(ptr, skb->data, rx_remain_len);
+
+ rx_pkt_len += rx_remain_len;
+ hif_dev->rx_remain_len = 0;
+ skb_put(remain_skb, rx_pkt_len);
+
+ skb_pool[pool_index++] = remain_skb;
+
+ } else {
+ index = rx_remain_len;
+ }
+ }
+
+ while (index < len) {
+ ptr = (u8 *) skb->data;
+
+ pkt_len = ptr[index] + (ptr[index+1] << 8);
+ pkt_tag = ptr[index+2] + (ptr[index+3] << 8);
+
+ if (pkt_tag == ATH_USB_RX_STREAM_MODE_TAG) {
+ u16 pad_len;
+
+ pad_len = 4 - (pkt_len & 0x3);
+ if (pad_len == 4)
+ pad_len = 0;
+
+ chk_idx = index;
+ index = index + 4 + pkt_len + pad_len;
+
+ if (index > MAX_RX_BUF_SIZE) {
+ hif_dev->rx_remain_len = index - MAX_RX_BUF_SIZE;
+ hif_dev->rx_transfer_len =
+ MAX_RX_BUF_SIZE - chk_idx - 4;
+ hif_dev->rx_pad_len = pad_len;
+
+ nskb = __dev_alloc_skb(pkt_len + 32,
+ GFP_ATOMIC);
+ if (!nskb) {
+ dev_err(&hif_dev->udev->dev,
+ "ath9k_htc: RX memory allocation"
+ " error\n");
+ goto err;
+ }
+ skb_reserve(nskb, 32);
+ RX_STAT_INC(skb_allocated);
+
+ memcpy(nskb->data, &(skb->data[chk_idx+4]),
+ hif_dev->rx_transfer_len);
+
+ /* Record the buffer pointer */
+ hif_dev->remain_skb = nskb;
+ } else {
+ nskb = __dev_alloc_skb(pkt_len + 32, GFP_ATOMIC);
+ if (!nskb) {
+ dev_err(&hif_dev->udev->dev,
+ "ath9k_htc: RX memory allocation"
+ " error\n");
+ goto err;
+ }
+ skb_reserve(nskb, 32);
+ RX_STAT_INC(skb_allocated);
+
+ memcpy(nskb->data, &(skb->data[chk_idx+4]), pkt_len);
+ skb_put(nskb, pkt_len);
+ skb_pool[pool_index++] = nskb;
+ }
+ } else {
+ RX_STAT_INC(skb_dropped);
+ dev_kfree_skb_any(skb);
+ return;
+ }
+ }
+
+err:
+ dev_kfree_skb_any(skb);
+
+ for (i = 0; i < pool_index; i++) {
+ ath9k_htc_rx_msg(hif_dev->htc_handle, skb_pool[i],
+ skb_pool[i]->len, USB_WLAN_RX_PIPE);
+ RX_STAT_INC(skb_completed);
+ }
+}
+
+static void ath9k_hif_usb_rx_cb(struct urb *urb)
+{
+ struct sk_buff *skb = (struct sk_buff *) urb->context;
+ struct sk_buff *nskb;
+ struct hif_device_usb *hif_dev = (struct hif_device_usb *)
+ usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+ int ret;
+
+ if (!hif_dev)
+ goto free;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ENODEV:
+ case -ESHUTDOWN:
+ goto free;
+ default:
+ goto resubmit;
+ }
+
+ if (likely(urb->actual_length != 0)) {
+ skb_put(skb, urb->actual_length);
+
+ nskb = __dev_alloc_skb(MAX_RX_BUF_SIZE, GFP_ATOMIC);
+ if (!nskb)
+ goto resubmit;
+
+ usb_fill_bulk_urb(urb, hif_dev->udev,
+ usb_rcvbulkpipe(hif_dev->udev,
+ USB_WLAN_RX_PIPE),
+ nskb->data, MAX_RX_BUF_SIZE,
+ ath9k_hif_usb_rx_cb, nskb);
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret) {
+ dev_kfree_skb_any(nskb);
+ goto free;
+ }
+
+ ath9k_hif_usb_rx_stream(hif_dev, skb);
+ return;
+ }
+
+resubmit:
+ skb_reset_tail_pointer(skb);
+ skb_trim(skb, 0);
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret)
+ goto free;
+
+ return;
+free:
+ dev_kfree_skb_any(skb);
+}
+
+static void ath9k_hif_usb_reg_in_cb(struct urb *urb)
+{
+ struct sk_buff *skb = (struct sk_buff *) urb->context;
+ struct sk_buff *nskb;
+ struct hif_device_usb *hif_dev = (struct hif_device_usb *)
+ usb_get_intfdata(usb_ifnum_to_if(urb->dev, 0));
+ int ret;
+
+ if (!hif_dev)
+ goto free;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ENOENT:
+ case -ECONNRESET:
+ case -ENODEV:
+ case -ESHUTDOWN:
+ goto free;
+ default:
+ goto resubmit;
+ }
+
+ if (likely(urb->actual_length != 0)) {
+ skb_put(skb, urb->actual_length);
+
+ nskb = __dev_alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_ATOMIC);
+ if (!nskb)
+ goto resubmit;
+
+ usb_fill_int_urb(urb, hif_dev->udev,
+ usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
+ nskb->data, MAX_REG_IN_BUF_SIZE,
+ ath9k_hif_usb_reg_in_cb, nskb, 1);
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret) {
+ dev_kfree_skb_any(nskb);
+ goto free;
+ }
+
+ ath9k_htc_rx_msg(hif_dev->htc_handle, skb,
+ skb->len, USB_REG_IN_PIPE);
+
+ return;
+ }
+
+resubmit:
+ skb_reset_tail_pointer(skb);
+ skb_trim(skb, 0);
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret)
+ goto free;
+
+ return;
+free:
+ dev_kfree_skb_any(skb);
+}
+
+static void ath9k_hif_usb_dealloc_tx_urbs(struct hif_device_usb *hif_dev)
+{
+ unsigned long flags;
+ struct tx_buf *tx_buf = NULL, *tx_buf_tmp = NULL;
+
+ list_for_each_entry_safe(tx_buf, tx_buf_tmp, &hif_dev->tx.tx_buf, list) {
+ list_del(&tx_buf->list);
+ usb_free_urb(tx_buf->urb);
+ kfree(tx_buf->buf);
+ kfree(tx_buf);
+ }
+
+ spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
+ hif_dev->tx.flags |= HIF_USB_TX_FLUSH;
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+
+ list_for_each_entry_safe(tx_buf, tx_buf_tmp,
+ &hif_dev->tx.tx_pending, list) {
+ usb_kill_urb(tx_buf->urb);
+ list_del(&tx_buf->list);
+ usb_free_urb(tx_buf->urb);
+ kfree(tx_buf->buf);
+ kfree(tx_buf);
+ }
+
+ spin_lock_irqsave(&hif_dev->tx.tx_lock, flags);
+ hif_dev->tx.flags &= ~HIF_USB_TX_FLUSH;
+ spin_unlock_irqrestore(&hif_dev->tx.tx_lock, flags);
+}
+
+static int ath9k_hif_usb_alloc_tx_urbs(struct hif_device_usb *hif_dev)
+{
+ struct tx_buf *tx_buf;
+ int i;
+
+ INIT_LIST_HEAD(&hif_dev->tx.tx_buf);
+ INIT_LIST_HEAD(&hif_dev->tx.tx_pending);
+ spin_lock_init(&hif_dev->tx.tx_lock);
+ __skb_queue_head_init(&hif_dev->tx.tx_skb_queue);
+
+ for (i = 0; i < MAX_TX_URB_NUM; i++) {
+ tx_buf = kzalloc(sizeof(struct tx_buf), GFP_KERNEL);
+ if (!tx_buf)
+ goto err;
+
+ tx_buf->buf = kzalloc(MAX_TX_BUF_SIZE, GFP_KERNEL);
+ if (!tx_buf->buf)
+ goto err;
+
+ tx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!tx_buf->urb)
+ goto err;
+
+ tx_buf->hif_dev = hif_dev;
+ __skb_queue_head_init(&tx_buf->skb_queue);
+
+ list_add_tail(&tx_buf->list, &hif_dev->tx.tx_buf);
+ }
+
+ hif_dev->tx.tx_buf_cnt = MAX_TX_URB_NUM;
+
+ return 0;
+err:
+ ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
+ return -ENOMEM;
+}
+
+static void ath9k_hif_usb_dealloc_rx_skbs(struct hif_device_usb *hif_dev)
+{
+ int i;
+
+ for (i = 0; i < MAX_RX_URB_NUM; i++) {
+ if (hif_dev->wlan_rx_data_urb[i]) {
+ if (hif_dev->wlan_rx_data_urb[i]->transfer_buffer)
+ dev_kfree_skb_any((void *)
+ hif_dev->wlan_rx_data_urb[i]->context);
+ }
+ }
+}
+
+static void ath9k_hif_usb_dealloc_rx_urbs(struct hif_device_usb *hif_dev)
+{
+ int i;
+
+ for (i = 0; i < MAX_RX_URB_NUM; i++) {
+ if (hif_dev->wlan_rx_data_urb[i]) {
+ usb_kill_urb(hif_dev->wlan_rx_data_urb[i]);
+ usb_free_urb(hif_dev->wlan_rx_data_urb[i]);
+ hif_dev->wlan_rx_data_urb[i] = NULL;
+ }
+ }
+}
+
+static int ath9k_hif_usb_prep_rx_urb(struct hif_device_usb *hif_dev,
+ struct urb *urb)
+{
+ struct sk_buff *skb;
+
+ skb = __dev_alloc_skb(MAX_RX_BUF_SIZE, GFP_KERNEL);
+ if (!skb)
+ return -ENOMEM;
+
+ usb_fill_bulk_urb(urb, hif_dev->udev,
+ usb_rcvbulkpipe(hif_dev->udev, USB_WLAN_RX_PIPE),
+ skb->data, MAX_RX_BUF_SIZE,
+ ath9k_hif_usb_rx_cb, skb);
+ return 0;
+}
+
+static int ath9k_hif_usb_alloc_rx_urbs(struct hif_device_usb *hif_dev)
+{
+ int i, ret;
+
+ for (i = 0; i < MAX_RX_URB_NUM; i++) {
+
+ /* Allocate URB */
+ hif_dev->wlan_rx_data_urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+ if (hif_dev->wlan_rx_data_urb[i] == NULL) {
+ ret = -ENOMEM;
+ goto err_rx_urb;
+ }
+
+ /* Allocate buffer */
+ ret = ath9k_hif_usb_prep_rx_urb(hif_dev,
+ hif_dev->wlan_rx_data_urb[i]);
+ if (ret)
+ goto err_rx_urb;
+
+ /* Submit URB */
+ ret = usb_submit_urb(hif_dev->wlan_rx_data_urb[i], GFP_KERNEL);
+ if (ret)
+ goto err_rx_urb;
+
+ }
+
+ return 0;
+
+err_rx_urb:
+ ath9k_hif_usb_dealloc_rx_skbs(hif_dev);
+ ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
+ return ret;
+}
+
+static void ath9k_hif_usb_dealloc_reg_in_urb(struct hif_device_usb *hif_dev)
+{
+ if (hif_dev->reg_in_urb) {
+ usb_kill_urb(hif_dev->reg_in_urb);
+ usb_free_urb(hif_dev->reg_in_urb);
+ hif_dev->reg_in_urb = NULL;
+ }
+}
+
+static int ath9k_hif_usb_alloc_reg_in_urb(struct hif_device_usb *hif_dev)
+{
+ struct sk_buff *skb;
+
+ hif_dev->reg_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (hif_dev->reg_in_urb == NULL)
+ return -ENOMEM;
+
+ skb = __dev_alloc_skb(MAX_REG_IN_BUF_SIZE, GFP_KERNEL);
+ if (!skb)
+ goto err;
+
+ usb_fill_int_urb(hif_dev->reg_in_urb, hif_dev->udev,
+ usb_rcvintpipe(hif_dev->udev, USB_REG_IN_PIPE),
+ skb->data, MAX_REG_IN_BUF_SIZE,
+ ath9k_hif_usb_reg_in_cb, skb, 1);
+
+ if (usb_submit_urb(hif_dev->reg_in_urb, GFP_KERNEL) != 0)
+ goto err_skb;
+
+ return 0;
+
+err_skb:
+ dev_kfree_skb_any(skb);
+err:
+ ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
+ return -ENOMEM;
+}
+
+static int ath9k_hif_usb_alloc_urbs(struct hif_device_usb *hif_dev)
+{
+ /* TX */
+ if (ath9k_hif_usb_alloc_tx_urbs(hif_dev) < 0)
+ goto err;
+
+ /* RX */
+ if (ath9k_hif_usb_alloc_rx_urbs(hif_dev) < 0)
+ goto err;
+
+ /* Register Read/Write */
+ if (ath9k_hif_usb_alloc_reg_in_urb(hif_dev) < 0)
+ goto err;
+
+ return 0;
+err:
+ return -ENOMEM;
+}
+
+static int ath9k_hif_usb_download_fw(struct hif_device_usb *hif_dev)
+{
+ int transfer, err;
+ const void *data = hif_dev->firmware->data;
+ size_t len = hif_dev->firmware->size;
+ u32 addr = AR9271_FIRMWARE;
+ u8 *buf = kzalloc(4096, GFP_KERNEL);
+
+ if (!buf)
+ return -ENOMEM;
+
+ while (len) {
+ transfer = min_t(int, len, 4096);
+ memcpy(buf, data, transfer);
+
+ err = usb_control_msg(hif_dev->udev,
+ usb_sndctrlpipe(hif_dev->udev, 0),
+ FIRMWARE_DOWNLOAD, 0x40 | USB_DIR_OUT,
+ addr >> 8, 0, buf, transfer, HZ);
+ if (err < 0) {
+ kfree(buf);
+ return err;
+ }
+
+ len -= transfer;
+ data += transfer;
+ addr += transfer;
+ }
+ kfree(buf);
+
+ /*
+ * Issue FW download complete command to firmware.
+ */
+ err = usb_control_msg(hif_dev->udev, usb_sndctrlpipe(hif_dev->udev, 0),
+ FIRMWARE_DOWNLOAD_COMP,
+ 0x40 | USB_DIR_OUT,
+ AR9271_FIRMWARE_TEXT >> 8, 0, NULL, 0, HZ);
+ if (err)
+ return -EIO;
+
+ dev_info(&hif_dev->udev->dev, "ath9k_htc: Transferred FW: %s, size: %ld\n",
+ "ar9271.fw", (unsigned long) hif_dev->firmware->size);
+
+ return 0;
+}
+
+static int ath9k_hif_usb_dev_init(struct hif_device_usb *hif_dev,
+ const char *fw_name)
+{
+ int ret;
+
+ /* Request firmware */
+ ret = request_firmware(&hif_dev->firmware, fw_name, &hif_dev->udev->dev);
+ if (ret) {
+ dev_err(&hif_dev->udev->dev,
+ "ath9k_htc: Firmware - %s not found\n", fw_name);
+ goto err_fw_req;
+ }
+
+ /* Download firmware */
+ ret = ath9k_hif_usb_download_fw(hif_dev);
+ if (ret) {
+ dev_err(&hif_dev->udev->dev,
+ "ath9k_htc: Firmware - %s download failed\n", fw_name);
+ goto err_fw_download;
+ }
+
+ /* Alloc URBs */
+ ret = ath9k_hif_usb_alloc_urbs(hif_dev);
+ if (ret) {
+ dev_err(&hif_dev->udev->dev,
+ "ath9k_htc: Unable to allocate URBs\n");
+ goto err_urb;
+ }
+
+ return 0;
+
+err_urb:
+ /* Nothing */
+err_fw_download:
+ release_firmware(hif_dev->firmware);
+err_fw_req:
+ hif_dev->firmware = NULL;
+ return ret;
+}
+
+static void ath9k_hif_usb_dealloc_urbs(struct hif_device_usb *hif_dev)
+{
+ ath9k_hif_usb_dealloc_reg_in_urb(hif_dev);
+ ath9k_hif_usb_dealloc_tx_urbs(hif_dev);
+ ath9k_hif_usb_dealloc_rx_urbs(hif_dev);
+}
+
+static void ath9k_hif_usb_dev_deinit(struct hif_device_usb *hif_dev)
+{
+ ath9k_hif_usb_dealloc_urbs(hif_dev);
+ if (hif_dev->firmware)
+ release_firmware(hif_dev->firmware);
+}
+
+static int ath9k_hif_usb_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
+{
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct hif_device_usb *hif_dev;
+ const char *fw_name = (const char *) id->driver_info;
+ int ret = 0;
+
+ hif_dev = kzalloc(sizeof(struct hif_device_usb), GFP_KERNEL);
+ if (!hif_dev) {
+ ret = -ENOMEM;
+ goto err_alloc;
+ }
+
+ usb_get_dev(udev);
+ hif_dev->udev = udev;
+ hif_dev->interface = interface;
+ hif_dev->device_id = id->idProduct;
+#ifdef CONFIG_PM
+ udev->reset_resume = 1;
+#endif
+ usb_set_intfdata(interface, hif_dev);
+
+ ret = ath9k_hif_usb_dev_init(hif_dev, fw_name);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_hif_init_usb;
+ }
+
+ hif_dev->htc_handle = ath9k_htc_hw_alloc(hif_dev);
+ if (hif_dev->htc_handle == NULL) {
+ ret = -ENOMEM;
+ goto err_htc_hw_alloc;
+ }
+
+ ret = ath9k_htc_hw_init(&hif_usb, hif_dev->htc_handle, hif_dev,
+ &hif_dev->udev->dev, hif_dev->device_id,
+ ATH9K_HIF_USB);
+ if (ret) {
+ ret = -EINVAL;
+ goto err_htc_hw_init;
+ }
+
+ dev_info(&hif_dev->udev->dev, "ath9k_htc: USB layer initialized\n");
+
+ return 0;
+
+err_htc_hw_init:
+ ath9k_htc_hw_free(hif_dev->htc_handle);
+err_htc_hw_alloc:
+ ath9k_hif_usb_dev_deinit(hif_dev);
+err_hif_init_usb:
+ usb_set_intfdata(interface, NULL);
+ kfree(hif_dev);
+ usb_put_dev(udev);
+err_alloc:
+ return ret;
+}
+
+static void ath9k_hif_usb_disconnect(struct usb_interface *interface)
+{
+ struct usb_device *udev = interface_to_usbdev(interface);
+ struct hif_device_usb *hif_dev =
+ (struct hif_device_usb *) usb_get_intfdata(interface);
+
+ if (hif_dev) {
+ ath9k_htc_hw_deinit(hif_dev->htc_handle, true);
+ ath9k_htc_hw_free(hif_dev->htc_handle);
+ ath9k_hif_usb_dev_deinit(hif_dev);
+ usb_set_intfdata(interface, NULL);
+ }
+
+ if (hif_dev->flags & HIF_USB_START)
+ usb_reset_device(udev);
+
+ kfree(hif_dev);
+ dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n");
+ usb_put_dev(udev);
+}
+
+#ifdef CONFIG_PM
+static int ath9k_hif_usb_suspend(struct usb_interface *interface,
+ pm_message_t message)
+{
+ struct hif_device_usb *hif_dev =
+ (struct hif_device_usb *) usb_get_intfdata(interface);
+
+ ath9k_hif_usb_dealloc_urbs(hif_dev);
+
+ return 0;
+}
+
+static int ath9k_hif_usb_resume(struct usb_interface *interface)
+{
+ struct hif_device_usb *hif_dev =
+ (struct hif_device_usb *) usb_get_intfdata(interface);
+ int ret;
+
+ ret = ath9k_hif_usb_alloc_urbs(hif_dev);
+ if (ret)
+ return ret;
+
+ if (hif_dev->firmware) {
+ ret = ath9k_hif_usb_download_fw(hif_dev);
+ if (ret)
+ goto fail_resume;
+ } else {
+ ath9k_hif_usb_dealloc_urbs(hif_dev);
+ return -EIO;
+ }
+
+ mdelay(100);
+
+ ret = ath9k_htc_resume(hif_dev->htc_handle);
+
+ if (ret)
+ goto fail_resume;
+
+ return 0;
+
+fail_resume:
+ ath9k_hif_usb_dealloc_urbs(hif_dev);
+
+ return ret;
+}
+#endif
+
+static struct usb_driver ath9k_hif_usb_driver = {
+ .name = "ath9k_hif_usb",
+ .probe = ath9k_hif_usb_probe,
+ .disconnect = ath9k_hif_usb_disconnect,
+#ifdef CONFIG_PM
+ .suspend = ath9k_hif_usb_suspend,
+ .resume = ath9k_hif_usb_resume,
+ .reset_resume = ath9k_hif_usb_resume,
+#endif
+ .id_table = ath9k_hif_usb_ids,
+ .soft_unbind = 1,
+};
+
+int ath9k_hif_usb_init(void)
+{
+ return usb_register(&ath9k_hif_usb_driver);
+}
+
+void ath9k_hif_usb_exit(void)
+{
+ usb_deregister(&ath9k_hif_usb_driver);
+}
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifndef HTC_USB_H
+#define HTC_USB_H
+
+#define AR9271_FIRMWARE 0x501000
+#define AR9271_FIRMWARE_TEXT 0x903000
+
+#define FIRMWARE_DOWNLOAD 0x30
+#define FIRMWARE_DOWNLOAD_COMP 0x31
+
+#define ATH_USB_RX_STREAM_MODE_TAG 0x4e00
+#define ATH_USB_TX_STREAM_MODE_TAG 0x697e
+
+/* FIXME: Verify these numbers (with Windows) */
+#define MAX_TX_URB_NUM 8
+#define MAX_TX_BUF_NUM 1024
+#define MAX_TX_BUF_SIZE 32768
+#define MAX_TX_AGGR_NUM 20
+
+#define MAX_RX_URB_NUM 8
+#define MAX_RX_BUF_SIZE 16384
+
+#define MAX_REG_OUT_URB_NUM 1
+#define MAX_REG_OUT_BUF_NUM 8
+
+#define MAX_REG_IN_BUF_SIZE 64
+
+/* USB Endpoint definition */
+#define USB_WLAN_TX_PIPE 1
+#define USB_WLAN_RX_PIPE 2
+#define USB_REG_IN_PIPE 3
+#define USB_REG_OUT_PIPE 4
+
+#define HIF_USB_MAX_RXPIPES 2
+#define HIF_USB_MAX_TXPIPES 4
+
+struct tx_buf {
+ u8 *buf;
+ u16 len;
+ u16 offset;
+ struct urb *urb;
+ struct sk_buff_head skb_queue;
+ struct hif_device_usb *hif_dev;
+ struct list_head list;
+};
+
+#define HIF_USB_TX_STOP BIT(0)
+#define HIF_USB_TX_FLUSH BIT(1)
+
+struct hif_usb_tx {
+ u8 flags;
+ u8 tx_buf_cnt;
+ u16 tx_skb_cnt;
+ struct sk_buff_head tx_skb_queue;
+ struct list_head tx_buf;
+ struct list_head tx_pending;
+ spinlock_t tx_lock;
+};
+
+struct cmd_buf {
+ struct sk_buff *skb;
+ struct hif_device_usb *hif_dev;
+};
+
+#define HIF_USB_START BIT(0)
+
+struct hif_device_usb {
+ u16 device_id;
+ struct usb_device *udev;
+ struct usb_interface *interface;
+ const struct firmware *firmware;
+ struct htc_target *htc_handle;
+ u8 flags;
+
+ struct hif_usb_tx tx;
+
+ struct urb *wlan_rx_data_urb[MAX_RX_URB_NUM];
+ struct urb *reg_in_urb;
+
+ struct sk_buff *remain_skb;
+ int rx_remain_len;
+ int rx_pkt_len;
+ int rx_transfer_len;
+ int rx_pad_len;
+};
+
+int ath9k_hif_usb_init(void);
+void ath9k_hif_usb_exit(void);
+
+#endif /* HTC_USB_H */
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifndef HTC_H
+#define HTC_H
+
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/firmware.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/leds.h>
+#include <net/mac80211.h>
+
+#include "common.h"
+#include "htc_hst.h"
+#include "hif_usb.h"
+#include "wmi.h"
+
+#define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */
+#define ATH_ANI_POLLINTERVAL 100 /* 100 ms */
+#define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */
+#define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */
+
+#define ATH_DEFAULT_BMISS_LIMIT 10
+#define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
+#define TSF_TO_TU(_h, _l) \
+ ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
+
+extern struct ieee80211_ops ath9k_htc_ops;
+extern int modparam_nohwcrypt;
+
+enum htc_phymode {
+ HTC_MODE_AUTO = 0,
+ HTC_MODE_11A = 1,
+ HTC_MODE_11B = 2,
+ HTC_MODE_11G = 3,
+ HTC_MODE_FH = 4,
+ HTC_MODE_TURBO_A = 5,
+ HTC_MODE_TURBO_G = 6,
+ HTC_MODE_11NA = 7,
+ HTC_MODE_11NG = 8
+};
+
+enum htc_opmode {
+ HTC_M_STA = 1,
+ HTC_M_IBSS = 0,
+ HTC_M_AHDEMO = 3,
+ HTC_M_HOSTAP = 6,
+ HTC_M_MONITOR = 8,
+ HTC_M_WDS = 2
+};
+
+#define ATH9K_HTC_HDRSPACE sizeof(struct htc_frame_hdr)
+#define ATH9K_HTC_AMPDU 1
+#define ATH9K_HTC_NORMAL 2
+
+#define ATH9K_HTC_TX_CTSONLY 0x1
+#define ATH9K_HTC_TX_RTSCTS 0x2
+#define ATH9K_HTC_TX_USE_MIN_RATE 0x100
+
+struct tx_frame_hdr {
+ u8 data_type;
+ u8 node_idx;
+ u8 vif_idx;
+ u8 tidno;
+ u32 flags; /* ATH9K_HTC_TX_* */
+ u8 key_type;
+ u8 keyix;
+ u8 reserved[26];
+} __packed;
+
+struct tx_mgmt_hdr {
+ u8 node_idx;
+ u8 vif_idx;
+ u8 tidno;
+ u8 flags;
+ u8 key_type;
+ u8 keyix;
+ u16 reserved;
+} __packed;
+
+struct tx_beacon_header {
+ u8 len_changed;
+ u8 vif_index;
+ u16 rev;
+} __packed;
+
+struct ath9k_htc_target_hw {
+ u32 flags;
+ u32 flags_ext;
+ u32 ampdu_limit;
+ u8 ampdu_subframes;
+ u8 tx_chainmask;
+ u8 tx_chainmask_legacy;
+ u8 rtscts_ratecode;
+ u8 protmode;
+} __packed;
+
+struct ath9k_htc_cap_target {
+ u32 flags;
+ u32 flags_ext;
+ u32 ampdu_limit;
+ u8 ampdu_subframes;
+ u8 tx_chainmask;
+ u8 tx_chainmask_legacy;
+ u8 rtscts_ratecode;
+ u8 protmode;
+} __packed;
+
+struct ath9k_htc_target_vif {
+ u8 index;
+ u8 des_bssid[ETH_ALEN];
+ enum htc_opmode opmode;
+ u8 myaddr[ETH_ALEN];
+ u8 bssid[ETH_ALEN];
+ u32 flags;
+ u32 flags_ext;
+ u16 ps_sta;
+ u16 rtsthreshold;
+ u8 ath_cap;
+ u8 node;
+ s8 mcast_rate;
+} __packed;
+
+#define ATH_HTC_STA_AUTH 0x0001
+#define ATH_HTC_STA_QOS 0x0002
+#define ATH_HTC_STA_ERP 0x0004
+#define ATH_HTC_STA_HT 0x0008
+
+/* FIXME: UAPSD variables */
+struct ath9k_htc_target_sta {
+ u16 associd;
+ u16 txpower;
+ u32 ucastkey;
+ u8 macaddr[ETH_ALEN];
+ u8 bssid[ETH_ALEN];
+ u8 sta_index;
+ u8 vif_index;
+ u8 vif_sta;
+ u16 flags; /* ATH_HTC_STA_* */
+ u16 htcap;
+ u8 valid;
+ u16 capinfo;
+ struct ath9k_htc_target_hw *hw;
+ struct ath9k_htc_target_vif *vif;
+ u16 txseqmgmt;
+ u8 is_vif_sta;
+ u16 maxampdu;
+ u16 iv16;
+ u32 iv32;
+} __packed;
+
+struct ath9k_htc_target_aggr {
+ u8 sta_index;
+ u8 tidno;
+ u8 aggr_enable;
+ u8 padding;
+} __packed;
+
+#define ATH_HTC_RATE_MAX 30
+
+#define WLAN_RC_DS_FLAG 0x01
+#define WLAN_RC_40_FLAG 0x02
+#define WLAN_RC_SGI_FLAG 0x04
+#define WLAN_RC_HT_FLAG 0x08
+
+struct ath9k_htc_rateset {
+ u8 rs_nrates;
+ u8 rs_rates[ATH_HTC_RATE_MAX];
+};
+
+struct ath9k_htc_rate {
+ struct ath9k_htc_rateset legacy_rates;
+ struct ath9k_htc_rateset ht_rates;
+} __packed;
+
+struct ath9k_htc_target_rate {
+ u8 sta_index;
+ u8 isnew;
+ u32 capflags;
+ struct ath9k_htc_rate rates;
+};
+
+struct ath9k_htc_target_stats {
+ u32 tx_shortretry;
+ u32 tx_longretry;
+ u32 tx_xretries;
+ u32 ht_txunaggr_xretry;
+ u32 ht_tx_xretries;
+} __packed;
+
+struct ath9k_htc_vif {
+ u8 index;
+};
+
+#define ATH9K_HTC_MAX_STA 8
+#define ATH9K_HTC_MAX_TID 8
+
+enum tid_aggr_state {
+ AGGR_STOP = 0,
+ AGGR_PROGRESS,
+ AGGR_START,
+ AGGR_OPERATIONAL
+};
+
+struct ath9k_htc_sta {
+ u8 index;
+ enum tid_aggr_state tid_state[ATH9K_HTC_MAX_TID];
+};
+
+struct ath9k_htc_aggr_work {
+ u16 tid;
+ u8 sta_addr[ETH_ALEN];
+ struct ieee80211_hw *hw;
+ struct ieee80211_vif *vif;
+ enum ieee80211_ampdu_mlme_action action;
+ struct mutex mutex;
+};
+
+#define ATH9K_HTC_RXBUF 256
+#define HTC_RX_FRAME_HEADER_SIZE 40
+
+struct ath9k_htc_rxbuf {
+ bool in_process;
+ struct sk_buff *skb;
+ struct ath_htc_rx_status rxstatus;
+ struct list_head list;
+};
+
+struct ath9k_htc_rx {
+ int last_rssi; /* FIXME: per-STA */
+ struct list_head rxbuf;
+ spinlock_t rxbuflock;
+};
+
+struct ath9k_htc_tx_ctl {
+ u8 type; /* ATH9K_HTC_* */
+};
+
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+
+#define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
+#define RX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.rx_stats.c++)
+
+struct ath_tx_stats {
+ u32 buf_queued;
+ u32 buf_completed;
+ u32 skb_queued;
+ u32 skb_completed;
+};
+
+struct ath_rx_stats {
+ u32 skb_allocated;
+ u32 skb_completed;
+ u32 skb_dropped;
+};
+
+struct ath9k_debug {
+ struct dentry *debugfs_phy;
+ struct dentry *debugfs_tgt_stats;
+ struct dentry *debugfs_xmit;
+ struct dentry *debugfs_recv;
+ struct ath_tx_stats tx_stats;
+ struct ath_rx_stats rx_stats;
+ u32 txrate;
+};
+
+#else
+
+#define TX_STAT_INC(c) do { } while (0)
+#define RX_STAT_INC(c) do { } while (0)
+
+#endif /* CONFIG_ATH9K_HTC_DEBUGFS */
+
+#define ATH_LED_PIN_DEF 1
+#define ATH_LED_PIN_9287 8
+#define ATH_LED_PIN_9271 15
+#define ATH_LED_ON_DURATION_IDLE 350 /* in msecs */
+#define ATH_LED_OFF_DURATION_IDLE 250 /* in msecs */
+
+enum ath_led_type {
+ ATH_LED_RADIO,
+ ATH_LED_ASSOC,
+ ATH_LED_TX,
+ ATH_LED_RX
+};
+
+struct ath_led {
+ struct ath9k_htc_priv *priv;
+ struct led_classdev led_cdev;
+ enum ath_led_type led_type;
+ struct delayed_work brightness_work;
+ char name[32];
+ bool registered;
+ int brightness;
+};
+
+#define OP_INVALID BIT(0)
+#define OP_SCANNING BIT(1)
+#define OP_FULL_RESET BIT(2)
+#define OP_LED_ASSOCIATED BIT(3)
+#define OP_LED_ON BIT(4)
+#define OP_PREAMBLE_SHORT BIT(5)
+#define OP_PROTECT_ENABLE BIT(6)
+#define OP_TXAGGR BIT(7)
+#define OP_ASSOCIATED BIT(8)
+#define OP_ENABLE_BEACON BIT(9)
+#define OP_LED_DEINIT BIT(10)
+
+struct ath9k_htc_priv {
+ struct device *dev;
+ struct ieee80211_hw *hw;
+ struct ath_hw *ah;
+ struct htc_target *htc;
+ struct wmi *wmi;
+
+ enum htc_endpoint_id wmi_cmd_ep;
+ enum htc_endpoint_id beacon_ep;
+ enum htc_endpoint_id cab_ep;
+ enum htc_endpoint_id uapsd_ep;
+ enum htc_endpoint_id mgmt_ep;
+ enum htc_endpoint_id data_be_ep;
+ enum htc_endpoint_id data_bk_ep;
+ enum htc_endpoint_id data_vi_ep;
+ enum htc_endpoint_id data_vo_ep;
+
+ u16 op_flags;
+ u16 curtxpow;
+ u16 txpowlimit;
+ u16 nvifs;
+ u16 nstations;
+ u16 seq_no;
+ u32 bmiss_cnt;
+
+ struct sk_buff *beacon;
+ spinlock_t beacon_lock;
+
+ struct ieee80211_vif *vif;
+ unsigned int rxfilter;
+ struct tasklet_struct wmi_tasklet;
+ struct tasklet_struct rx_tasklet;
+ struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
+ struct ath9k_htc_rx rx;
+ struct tasklet_struct tx_tasklet;
+ struct sk_buff_head tx_queue;
+ struct ath9k_htc_aggr_work aggr_work;
+ struct delayed_work ath9k_aggr_work;
+ struct delayed_work ath9k_ani_work;
+
+ struct ath_led radio_led;
+ struct ath_led assoc_led;
+ struct ath_led tx_led;
+ struct ath_led rx_led;
+ struct delayed_work ath9k_led_blink_work;
+ int led_on_duration;
+ int led_off_duration;
+ int led_on_cnt;
+ int led_off_cnt;
+ int hwq_map[ATH9K_WME_AC_VO+1];
+
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+ struct ath9k_debug debug;
+#endif
+ struct ath9k_htc_target_rate tgt_rate;
+
+ struct mutex mutex;
+};
+
+static inline void ath_read_cachesize(struct ath_common *common, int *csz)
+{
+ common->bus_ops->read_cachesize(common, csz);
+}
+
+void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf);
+void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending);
+void ath9k_htc_beacon_update(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif);
+
+void ath9k_htc_rxep(void *priv, struct sk_buff *skb,
+ enum htc_endpoint_id ep_id);
+void ath9k_htc_txep(void *priv, struct sk_buff *skb, enum htc_endpoint_id ep_id,
+ bool txok);
+
+void ath9k_htc_station_work(struct work_struct *work);
+void ath9k_htc_aggr_work(struct work_struct *work);
+void ath9k_ani_work(struct work_struct *work);;
+
+int ath9k_tx_init(struct ath9k_htc_priv *priv);
+void ath9k_tx_tasklet(unsigned long data);
+int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb);
+void ath9k_tx_cleanup(struct ath9k_htc_priv *priv);
+bool ath9k_htc_txq_setup(struct ath9k_htc_priv *priv,
+ enum ath9k_tx_queue_subtype qtype);
+int get_hw_qnum(u16 queue, int *hwq_map);
+int ath_txq_update(struct ath9k_htc_priv *priv, int qnum,
+ struct ath9k_tx_queue_info *qinfo);
+
+int ath9k_rx_init(struct ath9k_htc_priv *priv);
+void ath9k_rx_cleanup(struct ath9k_htc_priv *priv);
+void ath9k_host_rx_init(struct ath9k_htc_priv *priv);
+void ath9k_rx_tasklet(unsigned long data);
+
+void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
+void ath9k_init_leds(struct ath9k_htc_priv *priv);
+void ath9k_deinit_leds(struct ath9k_htc_priv *priv);
+
+int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
+ u16 devid);
+void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug);
+#ifdef CONFIG_PM
+int ath9k_htc_resume(struct htc_target *htc_handle);
+#endif
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+int ath9k_debug_create_root(void);
+void ath9k_debug_remove_root(void);
+int ath9k_init_debug(struct ath_hw *ah);
+void ath9k_exit_debug(struct ath_hw *ah);
+#else
+static inline int ath9k_debug_create_root(void) { return 0; };
+static inline void ath9k_debug_remove_root(void) {};
+static inline int ath9k_init_debug(struct ath_hw *ah) { return 0; };
+static inline void ath9k_exit_debug(struct ath_hw *ah) {};
+#endif /* CONFIG_ATH9K_HTC_DEBUGFS */
+
+#endif /* HTC_H */
--- /dev/null
+/*
+ * 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"
+
+#define FUDGE 2
+
+static void ath9k_htc_beacon_config_sta(struct ath9k_htc_priv *priv,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_beacon_state bs;
+ enum ath9k_int imask = 0;
+ int dtimperiod, dtimcount, sleepduration;
+ int cfpperiod, cfpcount, bmiss_timeout;
+ u32 nexttbtt = 0, intval, tsftu, htc_imask = 0;
+ u64 tsf;
+ int num_beacons, offset, dtim_dec_count, cfp_dec_count;
+ int ret;
+ u8 cmd_rsp;
+
+ memset(&bs, 0, sizeof(bs));
+
+ intval = bss_conf->beacon_int & ATH9K_BEACON_PERIOD;
+ bmiss_timeout = (ATH_DEFAULT_BMISS_LIMIT * bss_conf->beacon_int);
+
+ /*
+ * Setup dtim and cfp parameters according to
+ * last beacon we received (which may be none).
+ */
+ dtimperiod = bss_conf->dtim_period;
+ if (dtimperiod <= 0) /* NB: 0 if not known */
+ dtimperiod = 1;
+ dtimcount = 1;
+ if (dtimcount >= dtimperiod) /* NB: sanity check */
+ dtimcount = 0;
+ cfpperiod = 1; /* NB: no PCF support yet */
+ cfpcount = 0;
+
+ sleepduration = intval;
+ if (sleepduration <= 0)
+ sleepduration = intval;
+
+ /*
+ * Pull nexttbtt forward to reflect the current
+ * TSF and calculate dtim+cfp state for the result.
+ */
+ tsf = ath9k_hw_gettsf64(priv->ah);
+ tsftu = TSF_TO_TU(tsf>>32, tsf) + FUDGE;
+
+ num_beacons = tsftu / intval + 1;
+ offset = tsftu % intval;
+ nexttbtt = tsftu - offset;
+ if (offset)
+ nexttbtt += intval;
+
+ /* DTIM Beacon every dtimperiod Beacon */
+ dtim_dec_count = num_beacons % dtimperiod;
+ /* CFP every cfpperiod DTIM Beacon */
+ cfp_dec_count = (num_beacons / dtimperiod) % cfpperiod;
+ if (dtim_dec_count)
+ cfp_dec_count++;
+
+ dtimcount -= dtim_dec_count;
+ if (dtimcount < 0)
+ dtimcount += dtimperiod;
+
+ cfpcount -= cfp_dec_count;
+ if (cfpcount < 0)
+ cfpcount += cfpperiod;
+
+ bs.bs_intval = intval;
+ bs.bs_nexttbtt = nexttbtt;
+ bs.bs_dtimperiod = dtimperiod*intval;
+ bs.bs_nextdtim = bs.bs_nexttbtt + dtimcount*intval;
+ bs.bs_cfpperiod = cfpperiod*bs.bs_dtimperiod;
+ bs.bs_cfpnext = bs.bs_nextdtim + cfpcount*bs.bs_dtimperiod;
+ bs.bs_cfpmaxduration = 0;
+
+ /*
+ * Calculate the number of consecutive beacons to miss* before taking
+ * a BMISS interrupt. The configuration is specified in TU so we only
+ * need calculate based on the beacon interval. Note that we clamp the
+ * result to at most 15 beacons.
+ */
+ if (sleepduration > intval) {
+ bs.bs_bmissthreshold = ATH_DEFAULT_BMISS_LIMIT / 2;
+ } else {
+ bs.bs_bmissthreshold = DIV_ROUND_UP(bmiss_timeout, intval);
+ if (bs.bs_bmissthreshold > 15)
+ bs.bs_bmissthreshold = 15;
+ else if (bs.bs_bmissthreshold <= 0)
+ bs.bs_bmissthreshold = 1;
+ }
+
+ /*
+ * Calculate sleep duration. The configuration is given in ms.
+ * We ensure a multiple of the beacon period is used. Also, if the sleep
+ * duration is greater than the DTIM period then it makes senses
+ * to make it a multiple of that.
+ *
+ * XXX fixed at 100ms
+ */
+
+ bs.bs_sleepduration = roundup(IEEE80211_MS_TO_TU(100), sleepduration);
+ if (bs.bs_sleepduration > bs.bs_dtimperiod)
+ bs.bs_sleepduration = bs.bs_dtimperiod;
+
+ /* TSF out of range threshold fixed at 1 second */
+ bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
+
+ ath_print(common, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
+ ath_print(common, ATH_DBG_BEACON,
+ "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
+ bs.bs_bmissthreshold, bs.bs_sleepduration,
+ bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
+
+ /* Set the computed STA beacon timers */
+
+ WMI_CMD(WMI_DISABLE_INTR_CMDID);
+ ath9k_hw_set_sta_beacon_timers(priv->ah, &bs);
+ imask |= ATH9K_INT_BMISS;
+ htc_imask = cpu_to_be32(imask);
+ WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
+}
+
+static void ath9k_htc_beacon_config_adhoc(struct ath9k_htc_priv *priv,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ enum ath9k_int imask = 0;
+ u32 nexttbtt, intval, htc_imask = 0;
+ int ret;
+ u8 cmd_rsp;
+
+ intval = bss_conf->beacon_int & ATH9K_BEACON_PERIOD;
+ nexttbtt = intval;
+ intval |= ATH9K_BEACON_ENA;
+ if (priv->op_flags & OP_ENABLE_BEACON)
+ imask |= ATH9K_INT_SWBA;
+
+ ath_print(common, ATH_DBG_BEACON,
+ "IBSS Beacon config, intval: %d, imask: 0x%x\n",
+ bss_conf->beacon_int, imask);
+
+ WMI_CMD(WMI_DISABLE_INTR_CMDID);
+ ath9k_hw_beaconinit(priv->ah, nexttbtt, intval);
+ priv->bmiss_cnt = 0;
+ htc_imask = cpu_to_be32(imask);
+ WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
+}
+
+void ath9k_htc_beacon_update(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+
+ spin_lock_bh(&priv->beacon_lock);
+
+ if (priv->beacon)
+ dev_kfree_skb_any(priv->beacon);
+
+ priv->beacon = ieee80211_beacon_get(priv->hw, vif);
+ if (!priv->beacon)
+ ath_print(common, ATH_DBG_BEACON,
+ "Unable to allocate beacon\n");
+
+ spin_unlock_bh(&priv->beacon_lock);
+}
+
+void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending)
+{
+ struct ath9k_htc_vif *avp = (void *)priv->vif->drv_priv;
+ struct tx_beacon_header beacon_hdr;
+ struct ath9k_htc_tx_ctl tx_ctl;
+ struct ieee80211_tx_info *info;
+ u8 *tx_fhdr;
+
+ memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header));
+ memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
+
+ /* FIXME: Handle BMISS */
+ if (beacon_pending != 0) {
+ priv->bmiss_cnt++;
+ return;
+ }
+
+ spin_lock_bh(&priv->beacon_lock);
+
+ if (unlikely(priv->op_flags & OP_SCANNING)) {
+ spin_unlock_bh(&priv->beacon_lock);
+ return;
+ }
+
+ if (unlikely(priv->beacon == NULL)) {
+ spin_unlock_bh(&priv->beacon_lock);
+ return;
+ }
+
+ /* Free the old SKB first */
+ dev_kfree_skb_any(priv->beacon);
+
+ /* Get a new beacon */
+ priv->beacon = ieee80211_beacon_get(priv->hw, priv->vif);
+ if (!priv->beacon) {
+ spin_unlock_bh(&priv->beacon_lock);
+ return;
+ }
+
+ info = IEEE80211_SKB_CB(priv->beacon);
+ if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+ struct ieee80211_hdr *hdr =
+ (struct ieee80211_hdr *) priv->beacon->data;
+ priv->seq_no += 0x10;
+ hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+ hdr->seq_ctrl |= cpu_to_le16(priv->seq_no);
+ }
+
+ tx_ctl.type = ATH9K_HTC_NORMAL;
+ beacon_hdr.vif_index = avp->index;
+ tx_fhdr = skb_push(priv->beacon, sizeof(beacon_hdr));
+ memcpy(tx_fhdr, (u8 *) &beacon_hdr, sizeof(beacon_hdr));
+
+ htc_send(priv->htc, priv->beacon, priv->beacon_ep, &tx_ctl);
+
+ spin_unlock_bh(&priv->beacon_lock);
+}
+
+void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *bss_conf)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+
+ switch (vif->type) {
+ case NL80211_IFTYPE_STATION:
+ ath9k_htc_beacon_config_sta(priv, bss_conf);
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ ath9k_htc_beacon_config_adhoc(priv, bss_conf);
+ break;
+ default:
+ ath_print(common, ATH_DBG_CONFIG,
+ "Unsupported beaconing mode\n");
+ return;
+ }
+}
--- /dev/null
+/*
+ * 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"
+
+MODULE_AUTHOR("Atheros Communications");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");
+
+static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
+module_param_named(debug, ath9k_debug, uint, 0);
+MODULE_PARM_DESC(debug, "Debugging mask");
+
+int modparam_nohwcrypt;
+module_param_named(nohwcrypt, modparam_nohwcrypt, int, 0444);
+MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");
+
+#define CHAN2G(_freq, _idx) { \
+ .center_freq = (_freq), \
+ .hw_value = (_idx), \
+ .max_power = 20, \
+}
+
+static struct ieee80211_channel ath9k_2ghz_channels[] = {
+ CHAN2G(2412, 0), /* Channel 1 */
+ CHAN2G(2417, 1), /* Channel 2 */
+ CHAN2G(2422, 2), /* Channel 3 */
+ CHAN2G(2427, 3), /* Channel 4 */
+ CHAN2G(2432, 4), /* Channel 5 */
+ CHAN2G(2437, 5), /* Channel 6 */
+ CHAN2G(2442, 6), /* Channel 7 */
+ CHAN2G(2447, 7), /* Channel 8 */
+ CHAN2G(2452, 8), /* Channel 9 */
+ CHAN2G(2457, 9), /* Channel 10 */
+ CHAN2G(2462, 10), /* Channel 11 */
+ CHAN2G(2467, 11), /* Channel 12 */
+ CHAN2G(2472, 12), /* Channel 13 */
+ CHAN2G(2484, 13), /* Channel 14 */
+};
+
+/* Atheros hardware rate code addition for short premble */
+#define SHPCHECK(__hw_rate, __flags) \
+ ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04) : 0)
+
+#define RATE(_bitrate, _hw_rate, _flags) { \
+ .bitrate = (_bitrate), \
+ .flags = (_flags), \
+ .hw_value = (_hw_rate), \
+ .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
+}
+
+static struct ieee80211_rate ath9k_legacy_rates[] = {
+ RATE(10, 0x1b, 0),
+ RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp : 0x1e */
+ RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), /* shortp: 0x1d */
+ RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), /* short: 0x1c */
+ RATE(60, 0x0b, 0),
+ RATE(90, 0x0f, 0),
+ RATE(120, 0x0a, 0),
+ RATE(180, 0x0e, 0),
+ RATE(240, 0x09, 0),
+ RATE(360, 0x0d, 0),
+ RATE(480, 0x08, 0),
+ RATE(540, 0x0c, 0),
+};
+
+static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
+{
+ int time_left;
+
+ /* Firmware can take up to 50ms to get ready, to be safe use 1 second */
+ time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
+ if (!time_left) {
+ dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
+{
+ ath9k_exit_debug(priv->ah);
+ ath9k_hw_deinit(priv->ah);
+ tasklet_kill(&priv->wmi_tasklet);
+ tasklet_kill(&priv->rx_tasklet);
+ tasklet_kill(&priv->tx_tasklet);
+ kfree(priv->ah);
+ priv->ah = NULL;
+}
+
+static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
+{
+ struct ieee80211_hw *hw = priv->hw;
+
+ wiphy_rfkill_stop_polling(hw->wiphy);
+ ath9k_deinit_leds(priv);
+ ieee80211_unregister_hw(hw);
+ ath9k_rx_cleanup(priv);
+ ath9k_tx_cleanup(priv);
+ ath9k_deinit_priv(priv);
+}
+
+static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
+ u16 service_id,
+ void (*tx) (void *,
+ struct sk_buff *,
+ enum htc_endpoint_id,
+ bool txok),
+ enum htc_endpoint_id *ep_id)
+{
+ struct htc_service_connreq req;
+
+ memset(&req, 0, sizeof(struct htc_service_connreq));
+
+ req.service_id = service_id;
+ req.ep_callbacks.priv = priv;
+ req.ep_callbacks.rx = ath9k_htc_rxep;
+ req.ep_callbacks.tx = tx;
+
+ return htc_connect_service(priv->htc, &req, ep_id);
+}
+
+static int ath9k_init_htc_services(struct ath9k_htc_priv *priv)
+{
+ int ret;
+
+ /* WMI CMD*/
+ ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
+ if (ret)
+ goto err;
+
+ /* Beacon */
+ ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, NULL,
+ &priv->beacon_ep);
+ if (ret)
+ goto err;
+
+ /* CAB */
+ ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
+ &priv->cab_ep);
+ if (ret)
+ goto err;
+
+
+ /* UAPSD */
+ ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
+ &priv->uapsd_ep);
+ if (ret)
+ goto err;
+
+ /* MGMT */
+ ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
+ &priv->mgmt_ep);
+ if (ret)
+ goto err;
+
+ /* DATA BE */
+ ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
+ &priv->data_be_ep);
+ if (ret)
+ goto err;
+
+ /* DATA BK */
+ ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
+ &priv->data_bk_ep);
+ if (ret)
+ goto err;
+
+ /* DATA VI */
+ ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
+ &priv->data_vi_ep);
+ if (ret)
+ goto err;
+
+ /* DATA VO */
+ ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
+ &priv->data_vo_ep);
+ if (ret)
+ goto err;
+
+ ret = htc_init(priv->htc);
+ if (ret)
+ goto err;
+
+ return 0;
+
+err:
+ dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
+ return ret;
+}
+
+static int ath9k_reg_notifier(struct wiphy *wiphy,
+ struct regulatory_request *request)
+{
+ struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
+ struct ath9k_htc_priv *priv = hw->priv;
+
+ return ath_reg_notifier_apply(wiphy, request,
+ ath9k_hw_regulatory(priv->ah));
+}
+
+static unsigned int ath9k_ioread32(void *hw_priv, u32 reg_offset)
+{
+ struct ath_hw *ah = (struct ath_hw *) hw_priv;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
+ __be32 val, reg = cpu_to_be32(reg_offset);
+ int r;
+
+ r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
+ (u8 *) ®, sizeof(reg),
+ (u8 *) &val, sizeof(val),
+ 100);
+ if (unlikely(r)) {
+ ath_print(common, ATH_DBG_WMI,
+ "REGISTER READ FAILED: (0x%04x, %d)\n",
+ reg_offset, r);
+ return -EIO;
+ }
+
+ return be32_to_cpu(val);
+}
+
+static void ath9k_iowrite32(void *hw_priv, u32 val, u32 reg_offset)
+{
+ struct ath_hw *ah = (struct ath_hw *) hw_priv;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
+ __be32 buf[2] = {
+ cpu_to_be32(reg_offset),
+ cpu_to_be32(val),
+ };
+ int r;
+
+ r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
+ (u8 *) &buf, sizeof(buf),
+ (u8 *) &val, sizeof(val),
+ 100);
+ if (unlikely(r)) {
+ ath_print(common, ATH_DBG_WMI,
+ "REGISTER WRITE FAILED:(0x%04x, %d)\n",
+ reg_offset, r);
+ }
+}
+
+static const struct ath_ops ath9k_common_ops = {
+ .read = ath9k_ioread32,
+ .write = ath9k_iowrite32,
+};
+
+static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
+{
+ *csz = L1_CACHE_BYTES >> 2;
+}
+
+static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
+{
+ struct ath_hw *ah = (struct ath_hw *) common->ah;
+
+ (void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));
+
+ if (!ath9k_hw_wait(ah,
+ AR_EEPROM_STATUS_DATA,
+ AR_EEPROM_STATUS_DATA_BUSY |
+ AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
+ AH_WAIT_TIMEOUT))
+ return false;
+
+ *data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
+ AR_EEPROM_STATUS_DATA_VAL);
+
+ return true;
+}
+
+static const struct ath_bus_ops ath9k_usb_bus_ops = {
+ .read_cachesize = ath_usb_read_cachesize,
+ .eeprom_read = ath_usb_eeprom_read,
+};
+
+static void setup_ht_cap(struct ath9k_htc_priv *priv,
+ struct ieee80211_sta_ht_cap *ht_info)
+{
+ ht_info->ht_supported = true;
+ ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
+ IEEE80211_HT_CAP_SM_PS |
+ IEEE80211_HT_CAP_SGI_40 |
+ IEEE80211_HT_CAP_DSSSCCK40;
+
+ ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
+ ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
+
+ memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
+ ht_info->mcs.rx_mask[0] = 0xff;
+ ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
+}
+
+static int ath9k_init_queues(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
+ priv->hwq_map[i] = -1;
+
+ if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BE)) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for BE traffic\n");
+ goto err;
+ }
+
+ if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_BK)) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for BK traffic\n");
+ goto err;
+ }
+ if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VI)) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for VI traffic\n");
+ goto err;
+ }
+ if (!ath9k_htc_txq_setup(priv, ATH9K_WME_AC_VO)) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to setup xmit queue for VO traffic\n");
+ goto err;
+ }
+
+ return 0;
+
+err:
+ return -EINVAL;
+}
+
+static void ath9k_init_crypto(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int i = 0;
+
+ /* Get the hardware key cache size. */
+ common->keymax = priv->ah->caps.keycache_size;
+ if (common->keymax > ATH_KEYMAX) {
+ ath_print(common, ATH_DBG_ANY,
+ "Warning, using only %u entries in %u key cache\n",
+ ATH_KEYMAX, common->keymax);
+ common->keymax = ATH_KEYMAX;
+ }
+
+ /*
+ * Reset the key cache since some parts do not
+ * reset the contents on initial power up.
+ */
+ for (i = 0; i < common->keymax; i++)
+ ath9k_hw_keyreset(priv->ah, (u16) i);
+
+ if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_TKIP, NULL)) {
+ /*
+ * Whether we should enable h/w TKIP MIC.
+ * XXX: if we don't support WME TKIP MIC, then we wouldn't
+ * report WMM capable, so it's always safe to turn on
+ * TKIP MIC in this case.
+ */
+ ath9k_hw_setcapability(priv->ah, ATH9K_CAP_TKIP_MIC, 0, 1, NULL);
+ }
+
+ /*
+ * Check whether the separate key cache entries
+ * are required to handle both tx+rx MIC keys.
+ * With split mic keys the number of stations is limited
+ * to 27 otherwise 59.
+ */
+ if (ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_TKIP, NULL)
+ && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_CIPHER,
+ ATH9K_CIPHER_MIC, NULL)
+ && ath9k_hw_getcapability(priv->ah, ATH9K_CAP_TKIP_SPLIT,
+ 0, NULL))
+ common->splitmic = 1;
+
+ /* turn on mcast key search if possible */
+ if (!ath9k_hw_getcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH, 0, NULL))
+ (void)ath9k_hw_setcapability(priv->ah, ATH9K_CAP_MCAST_KEYSRCH,
+ 1, 1, NULL);
+}
+
+static void ath9k_init_channels_rates(struct ath9k_htc_priv *priv)
+{
+ if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes)) {
+ priv->sbands[IEEE80211_BAND_2GHZ].channels =
+ ath9k_2ghz_channels;
+ priv->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
+ priv->sbands[IEEE80211_BAND_2GHZ].n_channels =
+ ARRAY_SIZE(ath9k_2ghz_channels);
+ priv->sbands[IEEE80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
+ priv->sbands[IEEE80211_BAND_2GHZ].n_bitrates =
+ ARRAY_SIZE(ath9k_legacy_rates);
+ }
+}
+
+static void ath9k_init_misc(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+
+ common->tx_chainmask = priv->ah->caps.tx_chainmask;
+ common->rx_chainmask = priv->ah->caps.rx_chainmask;
+
+ if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_BSSIDMASK)
+ memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);
+
+ priv->op_flags |= OP_TXAGGR;
+}
+
+static int ath9k_init_priv(struct ath9k_htc_priv *priv, u16 devid)
+{
+ struct ath_hw *ah = NULL;
+ struct ath_common *common;
+ int ret = 0, csz = 0;
+
+ priv->op_flags |= OP_INVALID;
+
+ ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
+ if (!ah)
+ return -ENOMEM;
+
+ ah->hw_version.devid = devid;
+ ah->hw_version.subsysid = 0; /* FIXME */
+ priv->ah = ah;
+
+ common = ath9k_hw_common(ah);
+ common->ops = &ath9k_common_ops;
+ common->bus_ops = &ath9k_usb_bus_ops;
+ common->ah = ah;
+ common->hw = priv->hw;
+ common->priv = priv;
+ common->debug_mask = ath9k_debug;
+
+ spin_lock_init(&priv->wmi->wmi_lock);
+ spin_lock_init(&priv->beacon_lock);
+ mutex_init(&priv->mutex);
+ mutex_init(&priv->aggr_work.mutex);
+ tasklet_init(&priv->wmi_tasklet, ath9k_wmi_tasklet,
+ (unsigned long)priv);
+ tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
+ (unsigned long)priv);
+ tasklet_init(&priv->tx_tasklet, ath9k_tx_tasklet, (unsigned long)priv);
+ INIT_DELAYED_WORK(&priv->ath9k_aggr_work, ath9k_htc_aggr_work);
+ INIT_DELAYED_WORK(&priv->ath9k_ani_work, ath9k_ani_work);
+
+ /*
+ * Cache line size is used to size and align various
+ * structures used to communicate with the hardware.
+ */
+ ath_read_cachesize(common, &csz);
+ common->cachelsz = csz << 2; /* convert to bytes */
+
+ ret = ath9k_hw_init(ah);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to initialize hardware; "
+ "initialization status: %d\n", ret);
+ goto err_hw;
+ }
+
+ ret = ath9k_init_debug(ah);
+ if (ret) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to create debugfs files\n");
+ goto err_debug;
+ }
+
+ ret = ath9k_init_queues(priv);
+ if (ret)
+ goto err_queues;
+
+ ath9k_init_crypto(priv);
+ ath9k_init_channels_rates(priv);
+ ath9k_init_misc(priv);
+
+ return 0;
+
+err_queues:
+ ath9k_exit_debug(ah);
+err_debug:
+ ath9k_hw_deinit(ah);
+err_hw:
+
+ kfree(ah);
+ priv->ah = NULL;
+
+ return ret;
+}
+
+static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
+ struct ieee80211_hw *hw)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+
+ hw->flags = IEEE80211_HW_SIGNAL_DBM |
+ IEEE80211_HW_AMPDU_AGGREGATION |
+ IEEE80211_HW_SPECTRUM_MGMT |
+ IEEE80211_HW_HAS_RATE_CONTROL;
+
+ hw->wiphy->interface_modes =
+ BIT(NL80211_IFTYPE_STATION) |
+ BIT(NL80211_IFTYPE_ADHOC);
+
+ hw->queues = 4;
+ hw->channel_change_time = 5000;
+ hw->max_listen_interval = 10;
+ hw->vif_data_size = sizeof(struct ath9k_htc_vif);
+ hw->sta_data_size = sizeof(struct ath9k_htc_sta);
+
+ /* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
+ hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
+ sizeof(struct htc_frame_hdr) + 4;
+
+ if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
+ hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
+ &priv->sbands[IEEE80211_BAND_2GHZ];
+
+ if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_HT) {
+ if (test_bit(ATH9K_MODE_11G, priv->ah->caps.wireless_modes))
+ setup_ht_cap(priv,
+ &priv->sbands[IEEE80211_BAND_2GHZ].ht_cap);
+ }
+
+ SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
+}
+
+static int ath9k_init_device(struct ath9k_htc_priv *priv, u16 devid)
+{
+ struct ieee80211_hw *hw = priv->hw;
+ struct ath_common *common;
+ struct ath_hw *ah;
+ int error = 0;
+ struct ath_regulatory *reg;
+
+ /* Bring up device */
+ error = ath9k_init_priv(priv, devid);
+ if (error != 0)
+ goto err_init;
+
+ ah = priv->ah;
+ common = ath9k_hw_common(ah);
+ ath9k_set_hw_capab(priv, hw);
+
+ /* Initialize regulatory */
+ error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
+ ath9k_reg_notifier);
+ if (error)
+ goto err_regd;
+
+ reg = &common->regulatory;
+
+ /* Setup TX */
+ error = ath9k_tx_init(priv);
+ if (error != 0)
+ goto err_tx;
+
+ /* Setup RX */
+ error = ath9k_rx_init(priv);
+ if (error != 0)
+ goto err_rx;
+
+ /* Register with mac80211 */
+ error = ieee80211_register_hw(hw);
+ if (error)
+ goto err_register;
+
+ /* Handle world regulatory */
+ if (!ath_is_world_regd(reg)) {
+ error = regulatory_hint(hw->wiphy, reg->alpha2);
+ if (error)
+ goto err_world;
+ }
+
+ ath9k_init_leds(priv);
+ ath9k_start_rfkill_poll(priv);
+
+ return 0;
+
+err_world:
+ ieee80211_unregister_hw(hw);
+err_register:
+ ath9k_rx_cleanup(priv);
+err_rx:
+ ath9k_tx_cleanup(priv);
+err_tx:
+ /* Nothing */
+err_regd:
+ ath9k_deinit_priv(priv);
+err_init:
+ return error;
+}
+
+int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
+ u16 devid)
+{
+ struct ieee80211_hw *hw;
+ struct ath9k_htc_priv *priv;
+ int ret;
+
+ hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
+ if (!hw)
+ return -ENOMEM;
+
+ priv = hw->priv;
+ priv->hw = hw;
+ priv->htc = htc_handle;
+ priv->dev = dev;
+ htc_handle->drv_priv = priv;
+ SET_IEEE80211_DEV(hw, priv->dev);
+
+ ret = ath9k_htc_wait_for_target(priv);
+ if (ret)
+ goto err_free;
+
+ priv->wmi = ath9k_init_wmi(priv);
+ if (!priv->wmi) {
+ ret = -EINVAL;
+ goto err_free;
+ }
+
+ ret = ath9k_init_htc_services(priv);
+ if (ret)
+ goto err_init;
+
+ ret = ath9k_init_device(priv, devid);
+ if (ret)
+ goto err_init;
+
+ return 0;
+
+err_init:
+ ath9k_deinit_wmi(priv);
+err_free:
+ ieee80211_free_hw(hw);
+ return ret;
+}
+
+void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
+{
+ if (htc_handle->drv_priv) {
+ ath9k_deinit_device(htc_handle->drv_priv);
+ ath9k_deinit_wmi(htc_handle->drv_priv);
+ ieee80211_free_hw(htc_handle->drv_priv->hw);
+ }
+}
+
+#ifdef CONFIG_PM
+int ath9k_htc_resume(struct htc_target *htc_handle)
+{
+ int ret;
+
+ ret = ath9k_htc_wait_for_target(htc_handle->drv_priv);
+ if (ret)
+ return ret;
+
+ ret = ath9k_init_htc_services(htc_handle->drv_priv);
+ return ret;
+}
+#endif
+
+static int __init ath9k_htc_init(void)
+{
+ int error;
+
+ error = ath9k_debug_create_root();
+ if (error < 0) {
+ printk(KERN_ERR
+ "ath9k_htc: Unable to create debugfs root: %d\n",
+ error);
+ goto err_dbg;
+ }
+
+ error = ath9k_hif_usb_init();
+ if (error < 0) {
+ printk(KERN_ERR
+ "ath9k_htc: No USB devices found,"
+ " driver not installed.\n");
+ error = -ENODEV;
+ goto err_usb;
+ }
+
+ return 0;
+
+err_usb:
+ ath9k_debug_remove_root();
+err_dbg:
+ return error;
+}
+module_init(ath9k_htc_init);
+
+static void __exit ath9k_htc_exit(void)
+{
+ ath9k_hif_usb_exit();
+ ath9k_debug_remove_root();
+ printk(KERN_INFO "ath9k_htc: Driver unloaded\n");
+}
+module_exit(ath9k_htc_exit);
--- /dev/null
+/*
+ * 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 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;
+ u16 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;
+
+ 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:
+ 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 = 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;
+ u8 cmd_rsp;
+
+ memset(&trate, 0, sizeof(trate));
+
+ trate = priv->tgt_rate;
+
+ if (is_cw40)
+ priv->tgt_rate.capflags |= WLAN_RC_40_FLAG;
+ else
+ priv->tgt_rate.capflags &= ~WLAN_RC_40_FLAG;
+
+ trate.capflags = cpu_to_be32(priv->tgt_rate.capflags);
+
+ 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 = (struct ath9k_htc_sta *) sta->drv_priv;
+ int ret = 0;
+ u8 cmd_rsp;
+
+ if (tid > ATH9K_HTC_MAX_TID)
+ return -EINVAL;
+
+ rcu_read_lock();
+ sta = ieee80211_find_sta(vif, sta_addr);
+ if (sta) {
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ } else {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ if (!ista) {
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+
+ memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));
+
+ aggr.sta_index = ista->index;
+ rcu_read_unlock();
+ aggr.tidno = tid;
+ aggr.aggr_enable = oper;
+
+ if (oper)
+ ista->tid_state[tid] = AGGR_START;
+ else
+ ista->tid_state[tid] = AGGR_STOP;
+
+ 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);
+
+ 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_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_exit_debug(ah);
+ return -ENOMEM;
+}
+
+void ath9k_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_debug_create_root(void)
+{
+ ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
+ if (!ath9k_debugfs_root)
+ return -ENOENT;
+
+ return 0;
+}
+
+void ath9k_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;
+
+ /* 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) {
+ /* 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);
+ }
+ }
+
+ /*
+ * 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);
+ ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);
+}
+
+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;
+
+ 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);
+ }
+
+ if (ath9k_htc_tx_start(priv, skb) != 0) {
+ 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_start(struct ieee80211_hw *hw)
+{
+ 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;
+ u16 htc_mode;
+ u8 cmd_rsp;
+
+ ath_print(common, ATH_DBG_CONFIG,
+ "Starting driver with initial channel: %d MHz\n",
+ curchan->center_freq);
+
+ mutex_lock(&priv->mutex);
+
+ /* 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);
+ goto mutex_unlock;
+ }
+
+ 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);
+ if (ret)
+ goto mutex_unlock;
+
+ WMI_CMD(WMI_ATH_INIT_CMDID);
+ if (ret)
+ goto mutex_unlock;
+
+ WMI_CMD(WMI_START_RECV_CMDID);
+ if (ret)
+ goto mutex_unlock;
+
+ ath9k_host_rx_init(priv);
+
+ priv->op_flags &= ~OP_INVALID;
+ htc_start(priv->htc);
+
+mutex_unlock:
+ mutex_unlock(&priv->mutex);
+ return ret;
+}
+
+static void ath9k_htc_stop(struct ieee80211_hw *hw)
+{
+ 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;
+
+ mutex_lock(&priv->mutex);
+
+ if (priv->op_flags & OP_INVALID) {
+ ath_print(common, ATH_DBG_ANY, "Device not present\n");
+ mutex_unlock(&priv->mutex);
+ return;
+ }
+
+ 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_hw_setpower(ah, ATH9K_PM_FULL_SLEEP);
+
+ 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);
+ 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;
+ mutex_unlock(&priv->mutex);
+
+ ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
+}
+
+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;
+ }
+
+ 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:
+ 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);
+
+ if (vif->type == NL80211_IFTYPE_ADHOC) {
+ spin_lock_bh(&priv->beacon_lock);
+ if (priv->beacon)
+ dev_kfree_skb_any(priv->beacon);
+ priv->beacon = NULL;
+ spin_unlock_bh(&priv->beacon_lock);
+ }
+
+ 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_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_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");
+ }
+ }
+
+ 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);
+
+ changed_flags &= SUPPORTED_FILTERS;
+ *total_flags &= SUPPORTED_FILTERS;
+
+ priv->rxfilter = *total_flags;
+ rfilt = ath9k_cmn_calcrxfilter(hw, priv->ah, priv->rxfilter);
+ ath9k_hw_setrxfilter(priv->ah, rfilt);
+
+ ath_print(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
+ "Set HW RX filter: 0x%x\n", rfilt);
+
+ 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;
+
+ 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;
+ }
+}
+
+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_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 (modparam_nohwcrypt)
+ return -ENOSPC;
+
+ mutex_lock(&priv->mutex);
+ ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
+
+ 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;
+ }
+
+ 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);
+
+ 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_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, bss_conf);
+ }
+
+ if (changed & BSS_CHANGED_BEACON)
+ ath9k_htc_beacon_update(priv, vif);
+
+ if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
+ !bss_conf->enable_beacon) {
+ priv->op_flags &= ~OP_ENABLE_BEACON;
+ ath9k_htc_beacon_config(priv, vif, bss_conf);
+ }
+
+ 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);
+ }
+
+ 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;
+
+ mutex_lock(&priv->mutex);
+ ath9k_hw_reset_tsf(priv->ah);
+ mutex_unlock(&priv->mutex);
+}
+
+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_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;
+
+ 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;
+ ath_start_ani(priv);
+ mutex_unlock(&priv->mutex);
+}
+
+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,
+};
--- /dev/null
+/*
+ * 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"
+
+/******/
+/* TX */
+/******/
+
+int get_hw_qnum(u16 queue, int *hwq_map)
+{
+ switch (queue) {
+ case 0:
+ return hwq_map[ATH9K_WME_AC_VO];
+ case 1:
+ return hwq_map[ATH9K_WME_AC_VI];
+ case 2:
+ return hwq_map[ATH9K_WME_AC_BE];
+ case 3:
+ return hwq_map[ATH9K_WME_AC_BK];
+ default:
+ return hwq_map[ATH9K_WME_AC_BE];
+ }
+}
+
+int ath_txq_update(struct ath9k_htc_priv *priv, int qnum,
+ struct ath9k_tx_queue_info *qinfo)
+{
+ struct ath_hw *ah = priv->ah;
+ int error = 0;
+ struct ath9k_tx_queue_info qi;
+
+ ath9k_hw_get_txq_props(ah, qnum, &qi);
+
+ qi.tqi_aifs = qinfo->tqi_aifs;
+ qi.tqi_cwmin = qinfo->tqi_cwmin / 2; /* XXX */
+ qi.tqi_cwmax = qinfo->tqi_cwmax;
+ qi.tqi_burstTime = qinfo->tqi_burstTime;
+ qi.tqi_readyTime = qinfo->tqi_readyTime;
+
+ if (!ath9k_hw_set_txq_props(ah, qnum, &qi)) {
+ ath_print(ath9k_hw_common(ah), ATH_DBG_FATAL,
+ "Unable to update hardware queue %u!\n", qnum);
+ error = -EIO;
+ } else {
+ ath9k_hw_resettxqueue(ah, qnum);
+ }
+
+ return error;
+}
+
+int ath9k_htc_tx_start(struct ath9k_htc_priv *priv, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_sta *sta = tx_info->control.sta;
+ struct ath9k_htc_sta *ista;
+ struct ath9k_htc_vif *avp;
+ struct ath9k_htc_tx_ctl tx_ctl;
+ enum htc_endpoint_id epid;
+ u16 qnum, hw_qnum;
+ __le16 fc;
+ u8 *tx_fhdr;
+ u8 sta_idx;
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = hdr->frame_control;
+
+ avp = (struct ath9k_htc_vif *) tx_info->control.vif->drv_priv;
+ if (sta) {
+ ista = (struct ath9k_htc_sta *) sta->drv_priv;
+ sta_idx = ista->index;
+ } else {
+ sta_idx = 0;
+ }
+
+ memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
+
+ if (ieee80211_is_data(fc)) {
+ struct tx_frame_hdr tx_hdr;
+ u8 *qc;
+
+ memset(&tx_hdr, 0, sizeof(struct tx_frame_hdr));
+
+ tx_hdr.node_idx = sta_idx;
+ tx_hdr.vif_idx = avp->index;
+
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ tx_ctl.type = ATH9K_HTC_AMPDU;
+ tx_hdr.data_type = ATH9K_HTC_AMPDU;
+ } else {
+ tx_ctl.type = ATH9K_HTC_NORMAL;
+ tx_hdr.data_type = ATH9K_HTC_NORMAL;
+ }
+
+ if (ieee80211_is_data(fc)) {
+ qc = ieee80211_get_qos_ctl(hdr);
+ tx_hdr.tidno = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
+ }
+
+ /* Check for RTS protection */
+ if (priv->hw->wiphy->rts_threshold != (u32) -1)
+ if (skb->len > priv->hw->wiphy->rts_threshold)
+ tx_hdr.flags |= ATH9K_HTC_TX_RTSCTS;
+
+ /* CTS-to-self */
+ if (!(tx_hdr.flags & ATH9K_HTC_TX_RTSCTS) &&
+ (priv->op_flags & OP_PROTECT_ENABLE))
+ tx_hdr.flags |= ATH9K_HTC_TX_CTSONLY;
+
+ tx_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
+ if (tx_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
+ tx_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
+ else
+ tx_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+
+ tx_fhdr = skb_push(skb, sizeof(tx_hdr));
+ memcpy(tx_fhdr, (u8 *) &tx_hdr, sizeof(tx_hdr));
+
+ qnum = skb_get_queue_mapping(skb);
+ hw_qnum = get_hw_qnum(qnum, priv->hwq_map);
+
+ switch (hw_qnum) {
+ case 0:
+ epid = priv->data_be_ep;
+ break;
+ case 2:
+ epid = priv->data_vi_ep;
+ break;
+ case 3:
+ epid = priv->data_vo_ep;
+ break;
+ case 1:
+ default:
+ epid = priv->data_bk_ep;
+ break;
+ }
+ } else {
+ struct tx_mgmt_hdr mgmt_hdr;
+
+ memset(&mgmt_hdr, 0, sizeof(struct tx_mgmt_hdr));
+
+ tx_ctl.type = ATH9K_HTC_NORMAL;
+
+ mgmt_hdr.node_idx = sta_idx;
+ mgmt_hdr.vif_idx = avp->index;
+ mgmt_hdr.tidno = 0;
+ mgmt_hdr.flags = 0;
+
+ mgmt_hdr.key_type = ath9k_cmn_get_hw_crypto_keytype(skb);
+ if (mgmt_hdr.key_type == ATH9K_KEY_TYPE_CLEAR)
+ mgmt_hdr.keyix = (u8) ATH9K_TXKEYIX_INVALID;
+ else
+ mgmt_hdr.keyix = tx_info->control.hw_key->hw_key_idx;
+
+ tx_fhdr = skb_push(skb, sizeof(mgmt_hdr));
+ memcpy(tx_fhdr, (u8 *) &mgmt_hdr, sizeof(mgmt_hdr));
+ epid = priv->mgmt_ep;
+ }
+
+ return htc_send(priv->htc, skb, epid, &tx_ctl);
+}
+
+void ath9k_tx_tasklet(unsigned long data)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
+ struct ieee80211_sta *sta;
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_tx_info *tx_info;
+ struct sk_buff *skb = NULL;
+ __le16 fc;
+
+ while ((skb = skb_dequeue(&priv->tx_queue)) != NULL) {
+
+ hdr = (struct ieee80211_hdr *) skb->data;
+ fc = hdr->frame_control;
+ tx_info = IEEE80211_SKB_CB(skb);
+ sta = tx_info->control.sta;
+
+ rcu_read_lock();
+
+ if (sta && conf_is_ht(&priv->hw->conf) &&
+ (priv->op_flags & OP_TXAGGR)
+ && !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
+ if (ieee80211_is_data_qos(fc)) {
+ u8 *qc, tid;
+ struct ath9k_htc_sta *ista;
+
+ qc = ieee80211_get_qos_ctl(hdr);
+ tid = qc[0] & 0xf;
+ ista = (struct ath9k_htc_sta *)sta->drv_priv;
+
+ if ((tid < ATH9K_HTC_MAX_TID) &&
+ ista->tid_state[tid] == AGGR_STOP) {
+ ieee80211_start_tx_ba_session(sta, tid);
+ ista->tid_state[tid] = AGGR_PROGRESS;
+ }
+ }
+ }
+
+ rcu_read_unlock();
+
+ memset(&tx_info->status, 0, sizeof(tx_info->status));
+ ieee80211_tx_status(priv->hw, skb);
+ }
+}
+
+void ath9k_htc_txep(void *drv_priv, struct sk_buff *skb,
+ enum htc_endpoint_id ep_id, bool txok)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) drv_priv;
+ struct ieee80211_tx_info *tx_info;
+
+ if (!skb)
+ return;
+
+ if (ep_id == priv->mgmt_ep)
+ skb_pull(skb, sizeof(struct tx_mgmt_hdr));
+ else
+ /* TODO: Check for cab/uapsd/data */
+ skb_pull(skb, sizeof(struct tx_frame_hdr));
+
+ tx_info = IEEE80211_SKB_CB(skb);
+
+ if (txok)
+ tx_info->flags |= IEEE80211_TX_STAT_ACK;
+
+ skb_queue_tail(&priv->tx_queue, skb);
+ tasklet_schedule(&priv->tx_tasklet);
+}
+
+int ath9k_tx_init(struct ath9k_htc_priv *priv)
+{
+ skb_queue_head_init(&priv->tx_queue);
+ return 0;
+}
+
+void ath9k_tx_cleanup(struct ath9k_htc_priv *priv)
+{
+
+}
+
+bool ath9k_htc_txq_setup(struct ath9k_htc_priv *priv,
+ enum ath9k_tx_queue_subtype subtype)
+{
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_tx_queue_info qi;
+ int qnum;
+
+ memset(&qi, 0, sizeof(qi));
+
+ qi.tqi_subtype = subtype;
+ qi.tqi_aifs = ATH9K_TXQ_USEDEFAULT;
+ qi.tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
+ qi.tqi_cwmax = ATH9K_TXQ_USEDEFAULT;
+ qi.tqi_physCompBuf = 0;
+ qi.tqi_qflags = TXQ_FLAG_TXEOLINT_ENABLE | TXQ_FLAG_TXDESCINT_ENABLE;
+
+ qnum = ath9k_hw_setuptxqueue(priv->ah, ATH9K_TX_QUEUE_DATA, &qi);
+ if (qnum == -1)
+ return false;
+
+ if (qnum >= ARRAY_SIZE(priv->hwq_map)) {
+ ath_print(common, ATH_DBG_FATAL,
+ "qnum %u out of range, max %u!\n",
+ qnum, (unsigned int)ARRAY_SIZE(priv->hwq_map));
+ ath9k_hw_releasetxqueue(ah, qnum);
+ return false;
+ }
+
+ priv->hwq_map[subtype] = qnum;
+ return true;
+}
+
+/******/
+/* RX */
+/******/
+
+void ath9k_host_rx_init(struct ath9k_htc_priv *priv)
+{
+ ath9k_hw_rxena(priv->ah);
+ ath9k_cmn_opmode_init(priv->hw, priv->ah, priv->rxfilter);
+ ath9k_hw_startpcureceive(priv->ah);
+ priv->rx.last_rssi = ATH_RSSI_DUMMY_MARKER;
+}
+
+static void ath9k_process_rate(struct ieee80211_hw *hw,
+ struct ieee80211_rx_status *rxs,
+ u8 rx_rate, u8 rs_flags)
+{
+ struct ieee80211_supported_band *sband;
+ enum ieee80211_band band;
+ unsigned int i = 0;
+
+ if (rx_rate & 0x80) {
+ /* HT rate */
+ rxs->flag |= RX_FLAG_HT;
+ if (rs_flags & ATH9K_RX_2040)
+ rxs->flag |= RX_FLAG_40MHZ;
+ if (rs_flags & ATH9K_RX_GI)
+ rxs->flag |= RX_FLAG_SHORT_GI;
+ rxs->rate_idx = rx_rate & 0x7f;
+ return;
+ }
+
+ band = hw->conf.channel->band;
+ sband = hw->wiphy->bands[band];
+
+ for (i = 0; i < sband->n_bitrates; i++) {
+ if (sband->bitrates[i].hw_value == rx_rate) {
+ rxs->rate_idx = i;
+ return;
+ }
+ if (sband->bitrates[i].hw_value_short == rx_rate) {
+ rxs->rate_idx = i;
+ rxs->flag |= RX_FLAG_SHORTPRE;
+ return;
+ }
+ }
+
+}
+
+static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv,
+ struct ath9k_htc_rxbuf *rxbuf,
+ struct ieee80211_rx_status *rx_status)
+
+{
+ struct ieee80211_hdr *hdr;
+ struct ieee80211_hw *hw = priv->hw;
+ struct sk_buff *skb = rxbuf->skb;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ int hdrlen, padpos, padsize;
+ int last_rssi = ATH_RSSI_DUMMY_MARKER;
+ __le16 fc;
+
+ hdr = (struct ieee80211_hdr *)skb->data;
+ fc = hdr->frame_control;
+ hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+ padpos = ath9k_cmn_padpos(fc);
+
+ padsize = padpos & 3;
+ if (padsize && skb->len >= padpos+padsize) {
+ memmove(skb->data + padsize, skb->data, padpos);
+ skb_pull(skb, padsize);
+ }
+
+ memset(rx_status, 0, sizeof(struct ieee80211_rx_status));
+
+ if (rxbuf->rxstatus.rs_status != 0) {
+ if (rxbuf->rxstatus.rs_status & ATH9K_RXERR_CRC)
+ rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
+ if (rxbuf->rxstatus.rs_status & ATH9K_RXERR_PHY)
+ goto rx_next;
+
+ if (rxbuf->rxstatus.rs_status & ATH9K_RXERR_DECRYPT) {
+ /* FIXME */
+ } else if (rxbuf->rxstatus.rs_status & ATH9K_RXERR_MIC) {
+ if (ieee80211_is_ctl(fc))
+ /*
+ * Sometimes, we get invalid
+ * MIC failures on valid control frames.
+ * Remove these mic errors.
+ */
+ rxbuf->rxstatus.rs_status &= ~ATH9K_RXERR_MIC;
+ else
+ rx_status->flag |= RX_FLAG_MMIC_ERROR;
+ }
+
+ /*
+ * Reject error frames with the exception of
+ * decryption and MIC failures. For monitor mode,
+ * we also ignore the CRC error.
+ */
+ if (priv->ah->opmode == NL80211_IFTYPE_MONITOR) {
+ if (rxbuf->rxstatus.rs_status &
+ ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC |
+ ATH9K_RXERR_CRC))
+ goto rx_next;
+ } else {
+ if (rxbuf->rxstatus.rs_status &
+ ~(ATH9K_RXERR_DECRYPT | ATH9K_RXERR_MIC)) {
+ goto rx_next;
+ }
+ }
+ }
+
+ if (!(rxbuf->rxstatus.rs_status & ATH9K_RXERR_DECRYPT)) {
+ u8 keyix;
+ keyix = rxbuf->rxstatus.rs_keyix;
+ if (keyix != ATH9K_RXKEYIX_INVALID) {
+ rx_status->flag |= RX_FLAG_DECRYPTED;
+ } else if (ieee80211_has_protected(fc) &&
+ skb->len >= hdrlen + 4) {
+ keyix = skb->data[hdrlen + 3] >> 6;
+ if (test_bit(keyix, common->keymap))
+ rx_status->flag |= RX_FLAG_DECRYPTED;
+ }
+ }
+
+ ath9k_process_rate(hw, rx_status, rxbuf->rxstatus.rs_rate,
+ rxbuf->rxstatus.rs_flags);
+
+ if (priv->op_flags & OP_ASSOCIATED) {
+ if (rxbuf->rxstatus.rs_rssi != ATH9K_RSSI_BAD &&
+ !rxbuf->rxstatus.rs_moreaggr)
+ ATH_RSSI_LPF(priv->rx.last_rssi,
+ rxbuf->rxstatus.rs_rssi);
+
+ last_rssi = priv->rx.last_rssi;
+
+ if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER))
+ rxbuf->rxstatus.rs_rssi = ATH_EP_RND(last_rssi,
+ ATH_RSSI_EP_MULTIPLIER);
+
+ if (rxbuf->rxstatus.rs_rssi < 0)
+ rxbuf->rxstatus.rs_rssi = 0;
+
+ if (ieee80211_is_beacon(fc))
+ priv->ah->stats.avgbrssi = rxbuf->rxstatus.rs_rssi;
+ }
+
+ rx_status->mactime = rxbuf->rxstatus.rs_tstamp;
+ rx_status->band = hw->conf.channel->band;
+ rx_status->freq = hw->conf.channel->center_freq;
+ rx_status->signal = rxbuf->rxstatus.rs_rssi + ATH_DEFAULT_NOISE_FLOOR;
+ rx_status->antenna = rxbuf->rxstatus.rs_antenna;
+ rx_status->flag |= RX_FLAG_TSFT;
+
+ return true;
+
+rx_next:
+ return false;
+}
+
+/*
+ * FIXME: Handle FLUSH later on.
+ */
+void ath9k_rx_tasklet(unsigned long data)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
+ struct ath9k_htc_rxbuf *rxbuf = NULL, *tmp_buf = NULL;
+ struct ieee80211_rx_status rx_status;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+
+ do {
+ spin_lock_irqsave(&priv->rx.rxbuflock, flags);
+ list_for_each_entry(tmp_buf, &priv->rx.rxbuf, list) {
+ if (tmp_buf->in_process) {
+ rxbuf = tmp_buf;
+ break;
+ }
+ }
+
+ if (rxbuf == NULL) {
+ spin_unlock_irqrestore(&priv->rx.rxbuflock, flags);
+ break;
+ }
+
+ if (!rxbuf->skb)
+ goto requeue;
+
+ if (!ath9k_rx_prepare(priv, rxbuf, &rx_status)) {
+ dev_kfree_skb_any(rxbuf->skb);
+ goto requeue;
+ }
+
+ memcpy(IEEE80211_SKB_RXCB(rxbuf->skb), &rx_status,
+ sizeof(struct ieee80211_rx_status));
+ skb = rxbuf->skb;
+ spin_unlock_irqrestore(&priv->rx.rxbuflock, flags);
+
+ ieee80211_rx(priv->hw, skb);
+
+ spin_lock_irqsave(&priv->rx.rxbuflock, flags);
+requeue:
+ rxbuf->in_process = false;
+ rxbuf->skb = NULL;
+ list_move_tail(&rxbuf->list, &priv->rx.rxbuf);
+ rxbuf = NULL;
+ spin_unlock_irqrestore(&priv->rx.rxbuflock, flags);
+ } while (1);
+
+}
+
+void ath9k_htc_rxep(void *drv_priv, struct sk_buff *skb,
+ enum htc_endpoint_id ep_id)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)drv_priv;
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_rxbuf *rxbuf = NULL, *tmp_buf = NULL;
+ struct ath_htc_rx_status *rxstatus;
+ u32 len = 0;
+
+ spin_lock(&priv->rx.rxbuflock);
+ list_for_each_entry(tmp_buf, &priv->rx.rxbuf, list) {
+ if (!tmp_buf->in_process) {
+ rxbuf = tmp_buf;
+ break;
+ }
+ }
+ spin_unlock(&priv->rx.rxbuflock);
+
+ if (rxbuf == NULL) {
+ ath_print(common, ATH_DBG_ANY,
+ "No free RX buffer\n");
+ goto err;
+ }
+
+ len = skb->len;
+ if (len <= HTC_RX_FRAME_HEADER_SIZE) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Corrupted RX frame, dropping\n");
+ goto err;
+ }
+
+ rxstatus = (struct ath_htc_rx_status *)skb->data;
+
+ rxstatus->rs_tstamp = be64_to_cpu(rxstatus->rs_tstamp);
+ rxstatus->rs_datalen = be16_to_cpu(rxstatus->rs_datalen);
+ rxstatus->evm0 = be32_to_cpu(rxstatus->evm0);
+ rxstatus->evm1 = be32_to_cpu(rxstatus->evm1);
+ rxstatus->evm2 = be32_to_cpu(rxstatus->evm2);
+
+ if (rxstatus->rs_datalen - (len - HTC_RX_FRAME_HEADER_SIZE) != 0) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Corrupted RX data len, dropping "
+ "(epid: %d, dlen: %d, skblen: %d)\n",
+ ep_id, rxstatus->rs_datalen, len);
+ goto err;
+ }
+
+ spin_lock(&priv->rx.rxbuflock);
+ memcpy(&rxbuf->rxstatus, rxstatus, HTC_RX_FRAME_HEADER_SIZE);
+ skb_pull(skb, HTC_RX_FRAME_HEADER_SIZE);
+ skb->len = rxstatus->rs_datalen;
+ rxbuf->skb = skb;
+ rxbuf->in_process = true;
+ spin_unlock(&priv->rx.rxbuflock);
+
+ tasklet_schedule(&priv->rx_tasklet);
+ return;
+err:
+ dev_kfree_skb_any(skb);
+ return;
+}
+
+/* FIXME: Locking for cleanup/init */
+
+void ath9k_rx_cleanup(struct ath9k_htc_priv *priv)
+{
+ struct ath9k_htc_rxbuf *rxbuf, *tbuf;
+
+ list_for_each_entry_safe(rxbuf, tbuf, &priv->rx.rxbuf, list) {
+ list_del(&rxbuf->list);
+ if (rxbuf->skb)
+ dev_kfree_skb_any(rxbuf->skb);
+ kfree(rxbuf);
+ }
+}
+
+int ath9k_rx_init(struct ath9k_htc_priv *priv)
+{
+ struct ath_hw *ah = priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_htc_rxbuf *rxbuf;
+ int i = 0;
+
+ INIT_LIST_HEAD(&priv->rx.rxbuf);
+ spin_lock_init(&priv->rx.rxbuflock);
+
+ for (i = 0; i < ATH9K_HTC_RXBUF; i++) {
+ rxbuf = kzalloc(sizeof(struct ath9k_htc_rxbuf), GFP_KERNEL);
+ if (rxbuf == NULL) {
+ ath_print(common, ATH_DBG_FATAL,
+ "Unable to allocate RX buffers\n");
+ goto err;
+ }
+ list_add_tail(&rxbuf->list, &priv->rx.rxbuf);
+ }
+
+ return 0;
+
+err:
+ ath9k_rx_cleanup(priv);
+ return -ENOMEM;
+}
--- /dev/null
+/*
+ * 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"
+
+static int htc_issue_send(struct htc_target *target, struct sk_buff* skb,
+ u16 len, u8 flags, u8 epid,
+ struct ath9k_htc_tx_ctl *tx_ctl)
+{
+ struct htc_frame_hdr *hdr;
+ struct htc_endpoint *endpoint = &target->endpoint[epid];
+ int status;
+
+ hdr = (struct htc_frame_hdr *)
+ skb_push(skb, sizeof(struct htc_frame_hdr));
+ hdr->endpoint_id = epid;
+ hdr->flags = flags;
+ hdr->payload_len = cpu_to_be16(len);
+
+ status = target->hif->send(target->hif_dev, endpoint->ul_pipeid, skb,
+ tx_ctl);
+ return status;
+}
+
+static struct htc_endpoint *get_next_avail_ep(struct htc_endpoint *endpoint)
+{
+ enum htc_endpoint_id avail_epid;
+
+ for (avail_epid = ENDPOINT_MAX; avail_epid > ENDPOINT0; avail_epid--)
+ if (endpoint[avail_epid].service_id == 0)
+ return &endpoint[avail_epid];
+ return NULL;
+}
+
+static u8 service_to_ulpipe(u16 service_id)
+{
+ switch (service_id) {
+ case WMI_CONTROL_SVC:
+ return 4;
+ case WMI_BEACON_SVC:
+ case WMI_CAB_SVC:
+ case WMI_UAPSD_SVC:
+ case WMI_MGMT_SVC:
+ case WMI_DATA_VO_SVC:
+ case WMI_DATA_VI_SVC:
+ case WMI_DATA_BE_SVC:
+ case WMI_DATA_BK_SVC:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static u8 service_to_dlpipe(u16 service_id)
+{
+ switch (service_id) {
+ case WMI_CONTROL_SVC:
+ return 3;
+ case WMI_BEACON_SVC:
+ case WMI_CAB_SVC:
+ case WMI_UAPSD_SVC:
+ case WMI_MGMT_SVC:
+ case WMI_DATA_VO_SVC:
+ case WMI_DATA_VI_SVC:
+ case WMI_DATA_BE_SVC:
+ case WMI_DATA_BK_SVC:
+ return 2;
+ default:
+ return 0;
+ }
+}
+
+static void htc_process_target_rdy(struct htc_target *target,
+ void *buf)
+{
+ struct htc_endpoint *endpoint;
+ struct htc_ready_msg *htc_ready_msg = (struct htc_ready_msg *) buf;
+
+ target->credits = be16_to_cpu(htc_ready_msg->credits);
+ target->credit_size = be16_to_cpu(htc_ready_msg->credit_size);
+
+ endpoint = &target->endpoint[ENDPOINT0];
+ endpoint->service_id = HTC_CTRL_RSVD_SVC;
+ endpoint->max_msglen = HTC_MAX_CONTROL_MESSAGE_LENGTH;
+ complete(&target->target_wait);
+}
+
+static void htc_process_conn_rsp(struct htc_target *target,
+ struct htc_frame_hdr *htc_hdr)
+{
+ struct htc_conn_svc_rspmsg *svc_rspmsg;
+ struct htc_endpoint *endpoint, *tmp_endpoint = NULL;
+ u16 service_id;
+ u16 max_msglen;
+ enum htc_endpoint_id epid, tepid;
+
+ svc_rspmsg = (struct htc_conn_svc_rspmsg *)
+ ((void *) htc_hdr + sizeof(struct htc_frame_hdr));
+
+ if (svc_rspmsg->status == HTC_SERVICE_SUCCESS) {
+ epid = svc_rspmsg->endpoint_id;
+ service_id = be16_to_cpu(svc_rspmsg->service_id);
+ max_msglen = be16_to_cpu(svc_rspmsg->max_msg_len);
+ endpoint = &target->endpoint[epid];
+
+ for (tepid = ENDPOINT_MAX; tepid > ENDPOINT0; tepid--) {
+ tmp_endpoint = &target->endpoint[tepid];
+ if (tmp_endpoint->service_id == service_id) {
+ tmp_endpoint->service_id = 0;
+ break;
+ }
+ }
+
+ if (!tmp_endpoint)
+ return;
+
+ endpoint->service_id = service_id;
+ endpoint->max_txqdepth = tmp_endpoint->max_txqdepth;
+ endpoint->ep_callbacks = tmp_endpoint->ep_callbacks;
+ endpoint->ul_pipeid = tmp_endpoint->ul_pipeid;
+ endpoint->dl_pipeid = tmp_endpoint->dl_pipeid;
+ endpoint->max_msglen = max_msglen;
+ target->conn_rsp_epid = epid;
+ complete(&target->cmd_wait);
+ } else {
+ target->conn_rsp_epid = ENDPOINT_UNUSED;
+ }
+}
+
+static int htc_config_pipe_credits(struct htc_target *target)
+{
+ struct sk_buff *skb;
+ struct htc_config_pipe_msg *cp_msg;
+ int ret, time_left;
+
+ skb = dev_alloc_skb(50 + sizeof(struct htc_frame_hdr));
+ if (!skb) {
+ dev_err(target->dev, "failed to allocate send buffer\n");
+ return -ENOMEM;
+ }
+ skb_reserve(skb, sizeof(struct htc_frame_hdr));
+
+ cp_msg = (struct htc_config_pipe_msg *)
+ skb_put(skb, sizeof(struct htc_config_pipe_msg));
+
+ cp_msg->message_id = cpu_to_be16(HTC_MSG_CONFIG_PIPE_ID);
+ cp_msg->pipe_id = USB_WLAN_TX_PIPE;
+ cp_msg->credits = 28;
+
+ target->htc_flags |= HTC_OP_CONFIG_PIPE_CREDITS;
+
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ if (ret)
+ goto err;
+
+ time_left = wait_for_completion_timeout(&target->cmd_wait, HZ);
+ if (!time_left) {
+ dev_err(target->dev, "HTC credit config timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+err:
+ dev_kfree_skb(skb);
+ return -EINVAL;
+}
+
+static int htc_setup_complete(struct htc_target *target)
+{
+ struct sk_buff *skb;
+ struct htc_comp_msg *comp_msg;
+ int ret = 0, time_left;
+
+ skb = dev_alloc_skb(50 + sizeof(struct htc_frame_hdr));
+ if (!skb) {
+ dev_err(target->dev, "failed to allocate send buffer\n");
+ return -ENOMEM;
+ }
+ skb_reserve(skb, sizeof(struct htc_frame_hdr));
+
+ comp_msg = (struct htc_comp_msg *)
+ skb_put(skb, sizeof(struct htc_comp_msg));
+ comp_msg->msg_id = cpu_to_be16(HTC_MSG_SETUP_COMPLETE_ID);
+
+ target->htc_flags |= HTC_OP_START_WAIT;
+
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ if (ret)
+ goto err;
+
+ time_left = wait_for_completion_timeout(&target->cmd_wait, HZ);
+ if (!time_left) {
+ dev_err(target->dev, "HTC start timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+
+err:
+ dev_kfree_skb(skb);
+ return -EINVAL;
+}
+
+/* HTC APIs */
+
+int htc_init(struct htc_target *target)
+{
+ int ret;
+
+ ret = htc_config_pipe_credits(target);
+ if (ret)
+ return ret;
+
+ return htc_setup_complete(target);
+}
+
+int htc_connect_service(struct htc_target *target,
+ struct htc_service_connreq *service_connreq,
+ enum htc_endpoint_id *conn_rsp_epid)
+{
+ struct sk_buff *skb;
+ struct htc_endpoint *endpoint;
+ struct htc_conn_svc_msg *conn_msg;
+ int ret, time_left;
+
+ /* Find an available endpoint */
+ endpoint = get_next_avail_ep(target->endpoint);
+ if (!endpoint) {
+ dev_err(target->dev, "Endpoint is not available for"
+ "service %d\n", service_connreq->service_id);
+ return -EINVAL;
+ }
+
+ endpoint->service_id = service_connreq->service_id;
+ endpoint->max_txqdepth = service_connreq->max_send_qdepth;
+ endpoint->ul_pipeid = service_to_ulpipe(service_connreq->service_id);
+ endpoint->dl_pipeid = service_to_dlpipe(service_connreq->service_id);
+ endpoint->ep_callbacks = service_connreq->ep_callbacks;
+
+ skb = dev_alloc_skb(sizeof(struct htc_conn_svc_msg) +
+ sizeof(struct htc_frame_hdr));
+ if (!skb) {
+ dev_err(target->dev, "Failed to allocate buf to send"
+ "service connect req\n");
+ return -ENOMEM;
+ }
+
+ skb_reserve(skb, sizeof(struct htc_frame_hdr));
+
+ conn_msg = (struct htc_conn_svc_msg *)
+ skb_put(skb, sizeof(struct htc_conn_svc_msg));
+ conn_msg->service_id = cpu_to_be16(service_connreq->service_id);
+ conn_msg->msg_id = cpu_to_be16(HTC_MSG_CONNECT_SERVICE_ID);
+ conn_msg->con_flags = cpu_to_be16(service_connreq->con_flags);
+ conn_msg->dl_pipeid = endpoint->dl_pipeid;
+ conn_msg->ul_pipeid = endpoint->ul_pipeid;
+
+ ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0, NULL);
+ if (ret)
+ goto err;
+
+ time_left = wait_for_completion_timeout(&target->cmd_wait, HZ);
+ if (!time_left) {
+ dev_err(target->dev, "Service connection timeout for: %d\n",
+ service_connreq->service_id);
+ return -ETIMEDOUT;
+ }
+
+ *conn_rsp_epid = target->conn_rsp_epid;
+ return 0;
+err:
+ dev_kfree_skb(skb);
+ return ret;
+}
+
+int htc_send(struct htc_target *target, struct sk_buff *skb,
+ enum htc_endpoint_id epid, struct ath9k_htc_tx_ctl *tx_ctl)
+{
+ return htc_issue_send(target, skb, skb->len, 0, epid, tx_ctl);
+}
+
+void htc_stop(struct htc_target *target)
+{
+ enum htc_endpoint_id epid;
+ struct htc_endpoint *endpoint;
+
+ for (epid = ENDPOINT0; epid <= ENDPOINT_MAX; epid++) {
+ endpoint = &target->endpoint[epid];
+ if (endpoint->service_id != 0)
+ target->hif->stop(target->hif_dev, endpoint->ul_pipeid);
+ }
+}
+
+void htc_start(struct htc_target *target)
+{
+ enum htc_endpoint_id epid;
+ struct htc_endpoint *endpoint;
+
+ for (epid = ENDPOINT0; epid <= ENDPOINT_MAX; epid++) {
+ endpoint = &target->endpoint[epid];
+ if (endpoint->service_id != 0)
+ target->hif->start(target->hif_dev,
+ endpoint->ul_pipeid);
+ }
+}
+
+void ath9k_htc_txcompletion_cb(struct htc_target *htc_handle,
+ struct sk_buff *skb, bool txok)
+{
+ struct htc_endpoint *endpoint;
+ struct htc_frame_hdr *htc_hdr;
+
+ if (htc_handle->htc_flags & HTC_OP_CONFIG_PIPE_CREDITS) {
+ complete(&htc_handle->cmd_wait);
+ htc_handle->htc_flags &= ~HTC_OP_CONFIG_PIPE_CREDITS;
+ }
+
+ if (htc_handle->htc_flags & HTC_OP_START_WAIT) {
+ complete(&htc_handle->cmd_wait);
+ htc_handle->htc_flags &= ~HTC_OP_START_WAIT;
+ }
+
+ if (skb) {
+ htc_hdr = (struct htc_frame_hdr *) skb->data;
+ endpoint = &htc_handle->endpoint[htc_hdr->endpoint_id];
+ skb_pull(skb, sizeof(struct htc_frame_hdr));
+
+ if (endpoint->ep_callbacks.tx) {
+ endpoint->ep_callbacks.tx(htc_handle->drv_priv, skb,
+ htc_hdr->endpoint_id, txok);
+ }
+ }
+}
+
+/*
+ * HTC Messages are handled directly here and the obtained SKB
+ * is freed.
+ *
+ * Sevice messages (Data, WMI) passed to the corresponding
+ * endpoint RX handlers, which have to free the SKB.
+ */
+void ath9k_htc_rx_msg(struct htc_target *htc_handle,
+ struct sk_buff *skb, u32 len, u8 pipe_id)
+{
+ struct htc_frame_hdr *htc_hdr;
+ enum htc_endpoint_id epid;
+ struct htc_endpoint *endpoint;
+ u16 *msg_id;
+
+ if (!htc_handle || !skb)
+ return;
+
+ htc_hdr = (struct htc_frame_hdr *) skb->data;
+ epid = htc_hdr->endpoint_id;
+
+ if (epid >= ENDPOINT_MAX) {
+ dev_kfree_skb_any(skb);
+ return;
+ }
+
+ if (epid == ENDPOINT0) {
+
+ /* Handle trailer */
+ if (htc_hdr->flags & HTC_FLAGS_RECV_TRAILER) {
+ if (be32_to_cpu(*(u32 *) skb->data) == 0x00C60000)
+ /* Move past the Watchdog pattern */
+ htc_hdr = (struct htc_frame_hdr *) skb->data + 4;
+ }
+
+ /* Get the message ID */
+ msg_id = (u16 *) ((void *) htc_hdr +
+ sizeof(struct htc_frame_hdr));
+
+ /* Now process HTC messages */
+ switch (be16_to_cpu(*msg_id)) {
+ case HTC_MSG_READY_ID:
+ htc_process_target_rdy(htc_handle, htc_hdr);
+ break;
+ case HTC_MSG_CONNECT_SERVICE_RESPONSE_ID:
+ htc_process_conn_rsp(htc_handle, htc_hdr);
+ break;
+ default:
+ break;
+ }
+
+ dev_kfree_skb_any(skb);
+
+ } else {
+ if (htc_hdr->flags & HTC_FLAGS_RECV_TRAILER)
+ skb_trim(skb, len - htc_hdr->control[0]);
+
+ skb_pull(skb, sizeof(struct htc_frame_hdr));
+
+ endpoint = &htc_handle->endpoint[epid];
+ if (endpoint->ep_callbacks.rx)
+ endpoint->ep_callbacks.rx(endpoint->ep_callbacks.priv,
+ skb, epid);
+ }
+}
+
+struct htc_target *ath9k_htc_hw_alloc(void *hif_handle)
+{
+ struct htc_target *target;
+
+ target = kzalloc(sizeof(struct htc_target), GFP_KERNEL);
+ if (!target)
+ printk(KERN_ERR "Unable to allocate memory for"
+ "target device\n");
+
+ return target;
+}
+
+void ath9k_htc_hw_free(struct htc_target *htc)
+{
+ kfree(htc);
+}
+
+int ath9k_htc_hw_init(struct ath9k_htc_hif *hif, struct htc_target *target,
+ void *hif_handle, struct device *dev, u16 devid,
+ enum ath9k_hif_transports transport)
+{
+ struct htc_endpoint *endpoint;
+ int err = 0;
+
+ init_completion(&target->target_wait);
+ init_completion(&target->cmd_wait);
+
+ target->hif = hif;
+ target->hif_dev = hif_handle;
+ target->dev = dev;
+
+ /* Assign control endpoint pipe IDs */
+ endpoint = &target->endpoint[ENDPOINT0];
+ endpoint->ul_pipeid = hif->control_ul_pipe;
+ endpoint->dl_pipeid = hif->control_dl_pipe;
+
+ err = ath9k_htc_probe_device(target, dev, devid);
+ if (err) {
+ printk(KERN_ERR "Failed to initialize the device\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+void ath9k_htc_hw_deinit(struct htc_target *target, bool hot_unplug)
+{
+ if (target)
+ ath9k_htc_disconnect_device(target, hot_unplug);
+}
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifndef HTC_HST_H
+#define HTC_HST_H
+
+struct ath9k_htc_priv;
+struct htc_target;
+struct ath9k_htc_tx_ctl;
+
+enum ath9k_hif_transports {
+ ATH9K_HIF_USB,
+};
+
+struct ath9k_htc_hif {
+ struct list_head list;
+ const enum ath9k_hif_transports transport;
+ const char *name;
+
+ u8 control_dl_pipe;
+ u8 control_ul_pipe;
+
+ void (*start) (void *hif_handle, u8 pipe);
+ void (*stop) (void *hif_handle, u8 pipe);
+ int (*send) (void *hif_handle, u8 pipe, struct sk_buff *buf,
+ struct ath9k_htc_tx_ctl *tx_ctl);
+};
+
+enum htc_endpoint_id {
+ ENDPOINT_UNUSED = -1,
+ ENDPOINT0 = 0,
+ ENDPOINT1 = 1,
+ ENDPOINT2 = 2,
+ ENDPOINT3 = 3,
+ ENDPOINT4 = 4,
+ ENDPOINT5 = 5,
+ ENDPOINT6 = 6,
+ ENDPOINT7 = 7,
+ ENDPOINT8 = 8,
+ ENDPOINT_MAX = 22
+};
+
+/* Htc frame hdr flags */
+#define HTC_FLAGS_RECV_TRAILER (1 << 1)
+
+struct htc_frame_hdr {
+ u8 endpoint_id;
+ u8 flags;
+ u16 payload_len;
+ u8 control[4];
+} __packed;
+
+struct htc_ready_msg {
+ u16 message_id;
+ u16 credits;
+ u16 credit_size;
+ u8 max_endpoints;
+ u8 pad;
+} __packed;
+
+struct htc_config_pipe_msg {
+ u16 message_id;
+ u8 pipe_id;
+ u8 credits;
+} __packed;
+
+struct htc_packet {
+ void *pktcontext;
+ u8 *buf;
+ u8 *buf_payload;
+ u32 buflen;
+ u32 payload_len;
+
+ int endpoint;
+ int status;
+
+ void *context;
+ u32 reserved;
+};
+
+struct htc_ep_callbacks {
+ void *priv;
+ void (*tx) (void *, struct sk_buff *, enum htc_endpoint_id, bool txok);
+ void (*rx) (void *, struct sk_buff *, enum htc_endpoint_id);
+};
+
+#define HTC_TX_QUEUE_SIZE 256
+
+struct htc_txq {
+ struct sk_buff *buf[HTC_TX_QUEUE_SIZE];
+ u32 txqdepth;
+ u16 txbuf_cnt;
+ u16 txq_head;
+ u16 txq_tail;
+};
+
+struct htc_endpoint {
+ u16 service_id;
+
+ struct htc_ep_callbacks ep_callbacks;
+ struct htc_txq htc_txq;
+ u32 max_txqdepth;
+ int max_msglen;
+
+ u8 ul_pipeid;
+ u8 dl_pipeid;
+};
+
+#define HTC_MAX_CONTROL_MESSAGE_LENGTH 255
+#define HTC_CONTROL_BUFFER_SIZE \
+ (HTC_MAX_CONTROL_MESSAGE_LENGTH + sizeof(struct htc_frame_hdr))
+
+#define NUM_CONTROL_BUFFERS 8
+#define HST_ENDPOINT_MAX 8
+
+struct htc_control_buf {
+ struct htc_packet htc_pkt;
+ u8 buf[HTC_CONTROL_BUFFER_SIZE];
+};
+
+#define HTC_OP_START_WAIT BIT(0)
+#define HTC_OP_CONFIG_PIPE_CREDITS BIT(1)
+
+struct htc_target {
+ void *hif_dev;
+ struct ath9k_htc_priv *drv_priv;
+ struct device *dev;
+ struct ath9k_htc_hif *hif;
+ struct htc_endpoint endpoint[HST_ENDPOINT_MAX];
+ struct completion target_wait;
+ struct completion cmd_wait;
+ struct list_head list;
+ enum htc_endpoint_id conn_rsp_epid;
+ u16 credits;
+ u16 credit_size;
+ u8 htc_flags;
+};
+
+enum htc_msg_id {
+ HTC_MSG_READY_ID = 1,
+ HTC_MSG_CONNECT_SERVICE_ID,
+ HTC_MSG_CONNECT_SERVICE_RESPONSE_ID,
+ HTC_MSG_SETUP_COMPLETE_ID,
+ HTC_MSG_CONFIG_PIPE_ID,
+ HTC_MSG_CONFIG_PIPE_RESPONSE_ID,
+};
+
+struct htc_service_connreq {
+ u16 service_id;
+ u16 con_flags;
+ u32 max_send_qdepth;
+ struct htc_ep_callbacks ep_callbacks;
+};
+
+/* Current service IDs */
+
+enum htc_service_group_ids{
+ RSVD_SERVICE_GROUP = 0,
+ WMI_SERVICE_GROUP = 1,
+
+ HTC_SERVICE_GROUP_LAST = 255
+};
+
+#define MAKE_SERVICE_ID(group, index) \
+ (int)(((int)group << 8) | (int)(index))
+
+/* NOTE: service ID of 0x0000 is reserved and should never be used */
+#define HTC_CTRL_RSVD_SVC MAKE_SERVICE_ID(RSVD_SERVICE_GROUP, 1)
+#define HTC_LOOPBACK_RSVD_SVC MAKE_SERVICE_ID(RSVD_SERVICE_GROUP, 2)
+
+#define WMI_CONTROL_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 0)
+#define WMI_BEACON_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 1)
+#define WMI_CAB_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 2)
+#define WMI_UAPSD_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 3)
+#define WMI_MGMT_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 4)
+#define WMI_DATA_VO_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 5)
+#define WMI_DATA_VI_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 6)
+#define WMI_DATA_BE_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 7)
+#define WMI_DATA_BK_SVC MAKE_SERVICE_ID(WMI_SERVICE_GROUP, 8)
+
+struct htc_conn_svc_msg {
+ u16 msg_id;
+ u16 service_id;
+ u16 con_flags;
+ u8 dl_pipeid;
+ u8 ul_pipeid;
+ u8 svc_meta_len;
+ u8 pad;
+} __packed;
+
+/* connect response status codes */
+#define HTC_SERVICE_SUCCESS 0
+#define HTC_SERVICE_NOT_FOUND 1
+#define HTC_SERVICE_FAILED 2
+#define HTC_SERVICE_NO_RESOURCES 3
+#define HTC_SERVICE_NO_MORE_EP 4
+
+struct htc_conn_svc_rspmsg {
+ u16 msg_id;
+ u16 service_id;
+ u8 status;
+ u8 endpoint_id;
+ u16 max_msg_len;
+ u8 svc_meta_len;
+ u8 pad;
+} __packed;
+
+struct htc_comp_msg {
+ u16 msg_id;
+} __packed;
+
+int htc_init(struct htc_target *target);
+int htc_connect_service(struct htc_target *target,
+ struct htc_service_connreq *service_connreq,
+ enum htc_endpoint_id *conn_rsp_eid);
+int htc_send(struct htc_target *target, struct sk_buff *skb,
+ enum htc_endpoint_id eid, struct ath9k_htc_tx_ctl *tx_ctl);
+void htc_stop(struct htc_target *target);
+void htc_start(struct htc_target *target);
+
+void ath9k_htc_rx_msg(struct htc_target *htc_handle,
+ struct sk_buff *skb, u32 len, u8 pipe_id);
+void ath9k_htc_txcompletion_cb(struct htc_target *htc_handle,
+ struct sk_buff *skb, bool txok);
+
+struct htc_target *ath9k_htc_hw_alloc(void *hif_handle);
+void ath9k_htc_hw_free(struct htc_target *htc);
+int ath9k_htc_hw_init(struct ath9k_htc_hif *hif, struct htc_target *target,
+ void *hif_handle, struct device *dev, u16 devid,
+ enum ath9k_hif_transports transport);
+void ath9k_htc_hw_deinit(struct htc_target *target, bool hot_unplug);
+
+#endif /* HTC_HST_H */
u32 evm2;
};
+struct ath_htc_rx_status {
+ u64 rs_tstamp;
+ u16 rs_datalen;
+ u8 rs_status;
+ u8 rs_phyerr;
+ int8_t rs_rssi;
+ int8_t rs_rssi_ctl0;
+ int8_t rs_rssi_ctl1;
+ int8_t rs_rssi_ctl2;
+ int8_t rs_rssi_ext0;
+ int8_t rs_rssi_ext1;
+ int8_t rs_rssi_ext2;
+ u8 rs_keyix;
+ u8 rs_rate;
+ u8 rs_antenna;
+ u8 rs_more;
+ u8 rs_isaggr;
+ u8 rs_moreaggr;
+ u8 rs_num_delims;
+ u8 rs_flags;
+ u8 rs_dummy;
+ u32 evm0;
+ u32 evm1;
+ u32 evm2;
+};
+
#define ATH9K_RXERR_CRC 0x01
#define ATH9K_RXERR_PHY 0x02
#define ATH9K_RXERR_FIFO 0x04
--- /dev/null
+/*
+ * 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"
+
+static const char *wmi_cmd_to_name(enum wmi_cmd_id wmi_cmd)
+{
+ switch (wmi_cmd) {
+ case WMI_ECHO_CMDID:
+ return "WMI_ECHO_CMDID";
+ case WMI_ACCESS_MEMORY_CMDID:
+ return "WMI_ACCESS_MEMORY_CMDID";
+ case WMI_DISABLE_INTR_CMDID:
+ return "WMI_DISABLE_INTR_CMDID";
+ case WMI_ENABLE_INTR_CMDID:
+ return "WMI_ENABLE_INTR_CMDID";
+ case WMI_RX_LINK_CMDID:
+ return "WMI_RX_LINK_CMDID";
+ case WMI_ATH_INIT_CMDID:
+ return "WMI_ATH_INIT_CMDID";
+ case WMI_ABORT_TXQ_CMDID:
+ return "WMI_ABORT_TXQ_CMDID";
+ case WMI_STOP_TX_DMA_CMDID:
+ return "WMI_STOP_TX_DMA_CMDID";
+ case WMI_STOP_DMA_RECV_CMDID:
+ return "WMI_STOP_DMA_RECV_CMDID";
+ case WMI_ABORT_TX_DMA_CMDID:
+ return "WMI_ABORT_TX_DMA_CMDID";
+ case WMI_DRAIN_TXQ_CMDID:
+ return "WMI_DRAIN_TXQ_CMDID";
+ case WMI_DRAIN_TXQ_ALL_CMDID:
+ return "WMI_DRAIN_TXQ_ALL_CMDID";
+ case WMI_START_RECV_CMDID:
+ return "WMI_START_RECV_CMDID";
+ case WMI_STOP_RECV_CMDID:
+ return "WMI_STOP_RECV_CMDID";
+ case WMI_FLUSH_RECV_CMDID:
+ return "WMI_FLUSH_RECV_CMDID";
+ case WMI_SET_MODE_CMDID:
+ return "WMI_SET_MODE_CMDID";
+ case WMI_RESET_CMDID:
+ return "WMI_RESET_CMDID";
+ case WMI_NODE_CREATE_CMDID:
+ return "WMI_NODE_CREATE_CMDID";
+ case WMI_NODE_REMOVE_CMDID:
+ return "WMI_NODE_REMOVE_CMDID";
+ case WMI_VAP_REMOVE_CMDID:
+ return "WMI_VAP_REMOVE_CMDID";
+ case WMI_VAP_CREATE_CMDID:
+ return "WMI_VAP_CREATE_CMDID";
+ case WMI_BEACON_UPDATE_CMDID:
+ return "WMI_BEACON_UPDATE_CMDID";
+ case WMI_REG_READ_CMDID:
+ return "WMI_REG_READ_CMDID";
+ case WMI_REG_WRITE_CMDID:
+ return "WMI_REG_WRITE_CMDID";
+ case WMI_RC_STATE_CHANGE_CMDID:
+ return "WMI_RC_STATE_CHANGE_CMDID";
+ case WMI_RC_RATE_UPDATE_CMDID:
+ return "WMI_RC_RATE_UPDATE_CMDID";
+ case WMI_DEBUG_INFO_CMDID:
+ return "WMI_DEBUG_INFO_CMDID";
+ case WMI_HOST_ATTACH:
+ return "WMI_HOST_ATTACH";
+ case WMI_TARGET_IC_UPDATE_CMDID:
+ return "WMI_TARGET_IC_UPDATE_CMDID";
+ case WMI_TGT_STATS_CMDID:
+ return "WMI_TGT_STATS_CMDID";
+ case WMI_TX_AGGR_ENABLE_CMDID:
+ return "WMI_TX_AGGR_ENABLE_CMDID";
+ case WMI_TGT_DETACH_CMDID:
+ return "WMI_TGT_DETACH_CMDID";
+ case WMI_TGT_TXQ_ENABLE_CMDID:
+ return "WMI_TGT_TXQ_ENABLE_CMDID";
+ }
+
+ return "Bogus";
+}
+
+struct wmi *ath9k_init_wmi(struct ath9k_htc_priv *priv)
+{
+ struct wmi *wmi;
+
+ wmi = kzalloc(sizeof(struct wmi), GFP_KERNEL);
+ if (!wmi)
+ return NULL;
+
+ wmi->drv_priv = priv;
+ wmi->stopped = false;
+ mutex_init(&wmi->op_mutex);
+ init_completion(&wmi->cmd_wait);
+
+ return wmi;
+}
+
+void ath9k_deinit_wmi(struct ath9k_htc_priv *priv)
+{
+ struct wmi *wmi = priv->wmi;
+
+ mutex_lock(&wmi->op_mutex);
+ wmi->stopped = true;
+ mutex_unlock(&wmi->op_mutex);
+
+ kfree(priv->wmi);
+}
+
+void ath9k_wmi_tasklet(unsigned long data)
+{
+ struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct wmi_cmd_hdr *hdr;
+ struct wmi_swba *swba_hdr;
+ enum wmi_event_id event;
+ struct sk_buff *skb;
+ void *wmi_event;
+ unsigned long flags;
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+ u32 txrate;
+#endif
+
+ spin_lock_irqsave(&priv->wmi->wmi_lock, flags);
+ skb = priv->wmi->wmi_skb;
+ spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
+
+ hdr = (struct wmi_cmd_hdr *) skb->data;
+ event = be16_to_cpu(hdr->command_id);
+ wmi_event = skb_pull(skb, sizeof(struct wmi_cmd_hdr));
+
+ ath_print(common, ATH_DBG_WMI,
+ "WMI Event: 0x%x\n", event);
+
+ switch (event) {
+ case WMI_TGT_RDY_EVENTID:
+ break;
+ case WMI_SWBA_EVENTID:
+ swba_hdr = (struct wmi_swba *) wmi_event;
+ ath9k_htc_swba(priv, swba_hdr->beacon_pending);
+ break;
+ case WMI_FATAL_EVENTID:
+ break;
+ case WMI_TXTO_EVENTID:
+ break;
+ case WMI_BMISS_EVENTID:
+ break;
+ case WMI_WLAN_TXCOMP_EVENTID:
+ break;
+ case WMI_DELBA_EVENTID:
+ break;
+ case WMI_TXRATE_EVENTID:
+#ifdef CONFIG_ATH9K_HTC_DEBUGFS
+ txrate = ((struct wmi_event_txrate *)wmi_event)->txrate;
+ priv->debug.txrate = be32_to_cpu(txrate);
+#endif
+ break;
+ default:
+ break;
+ }
+
+ dev_kfree_skb_any(skb);
+}
+
+static void ath9k_wmi_rsp_callback(struct wmi *wmi, struct sk_buff *skb)
+{
+ skb_pull(skb, sizeof(struct wmi_cmd_hdr));
+
+ if (wmi->cmd_rsp_buf != NULL && wmi->cmd_rsp_len != 0)
+ memcpy(wmi->cmd_rsp_buf, skb->data, wmi->cmd_rsp_len);
+
+ complete(&wmi->cmd_wait);
+}
+
+static void ath9k_wmi_ctrl_rx(void *priv, struct sk_buff *skb,
+ enum htc_endpoint_id epid)
+{
+ struct wmi *wmi = (struct wmi *) priv;
+ struct wmi_cmd_hdr *hdr;
+ u16 cmd_id;
+
+ if (unlikely(wmi->stopped))
+ goto free_skb;
+
+ hdr = (struct wmi_cmd_hdr *) skb->data;
+ cmd_id = be16_to_cpu(hdr->command_id);
+
+ if (cmd_id & 0x1000) {
+ spin_lock(&wmi->wmi_lock);
+ wmi->wmi_skb = skb;
+ spin_unlock(&wmi->wmi_lock);
+ tasklet_schedule(&wmi->drv_priv->wmi_tasklet);
+ return;
+ }
+
+ /* WMI command response */
+ ath9k_wmi_rsp_callback(wmi, skb);
+
+free_skb:
+ dev_kfree_skb_any(skb);
+}
+
+static void ath9k_wmi_ctrl_tx(void *priv, struct sk_buff *skb,
+ enum htc_endpoint_id epid, bool txok)
+{
+ dev_kfree_skb_any(skb);
+}
+
+int ath9k_wmi_connect(struct htc_target *htc, struct wmi *wmi,
+ enum htc_endpoint_id *wmi_ctrl_epid)
+{
+ struct htc_service_connreq connect;
+ int ret;
+
+ wmi->htc = htc;
+
+ memset(&connect, 0, sizeof(connect));
+
+ connect.ep_callbacks.priv = wmi;
+ connect.ep_callbacks.tx = ath9k_wmi_ctrl_tx;
+ connect.ep_callbacks.rx = ath9k_wmi_ctrl_rx;
+ connect.service_id = WMI_CONTROL_SVC;
+
+ ret = htc_connect_service(htc, &connect, &wmi->ctrl_epid);
+ if (ret)
+ return ret;
+
+ *wmi_ctrl_epid = wmi->ctrl_epid;
+
+ return 0;
+}
+
+static int ath9k_wmi_cmd_issue(struct wmi *wmi,
+ struct sk_buff *skb,
+ enum wmi_cmd_id cmd, u16 len)
+{
+ struct wmi_cmd_hdr *hdr;
+
+ hdr = (struct wmi_cmd_hdr *) skb_push(skb, sizeof(struct wmi_cmd_hdr));
+ hdr->command_id = cpu_to_be16(cmd);
+ hdr->seq_no = cpu_to_be16(++wmi->tx_seq_id);
+
+ return htc_send(wmi->htc, skb, wmi->ctrl_epid, NULL);
+}
+
+int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id,
+ u8 *cmd_buf, u32 cmd_len,
+ u8 *rsp_buf, u32 rsp_len,
+ u32 timeout)
+{
+ struct ath_hw *ah = wmi->drv_priv->ah;
+ struct ath_common *common = ath9k_hw_common(ah);
+ u16 headroom = sizeof(struct htc_frame_hdr) +
+ sizeof(struct wmi_cmd_hdr);
+ struct sk_buff *skb;
+ u8 *data;
+ int time_left, ret = 0;
+
+ if (!wmi)
+ return -EINVAL;
+
+ skb = dev_alloc_skb(headroom + cmd_len);
+ if (!skb)
+ return -ENOMEM;
+
+ skb_reserve(skb, headroom);
+
+ if (cmd_len != 0 && cmd_buf != NULL) {
+ data = (u8 *) skb_put(skb, cmd_len);
+ memcpy(data, cmd_buf, cmd_len);
+ }
+
+ mutex_lock(&wmi->op_mutex);
+
+ /* check if wmi stopped flag is set */
+ if (unlikely(wmi->stopped)) {
+ ret = -EPROTO;
+ goto out;
+ }
+
+ /* record the rsp buffer and length */
+ wmi->cmd_rsp_buf = rsp_buf;
+ wmi->cmd_rsp_len = rsp_len;
+
+ ret = ath9k_wmi_cmd_issue(wmi, skb, cmd_id, cmd_len);
+ if (ret)
+ goto out;
+
+ time_left = wait_for_completion_timeout(&wmi->cmd_wait, timeout);
+ if (!time_left) {
+ ath_print(common, ATH_DBG_WMI,
+ "Timeout waiting for WMI command: %s\n",
+ wmi_cmd_to_name(cmd_id));
+ mutex_unlock(&wmi->op_mutex);
+ return -ETIMEDOUT;
+ }
+
+ mutex_unlock(&wmi->op_mutex);
+
+ return 0;
+
+out:
+ ath_print(common, ATH_DBG_WMI,
+ "WMI failure for: %s\n", wmi_cmd_to_name(cmd_id));
+ mutex_unlock(&wmi->op_mutex);
+ dev_kfree_skb_any(skb);
+
+ return ret;
+}
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifndef WMI_H
+#define WMI_H
+
+
+struct wmi_event_txrate {
+ u32 txrate;
+ struct {
+ u8 rssi_thresh;
+ u8 per;
+ } rc_stats;
+} __packed;
+
+struct wmi_cmd_hdr {
+ u16 command_id;
+ u16 seq_no;
+} __packed;
+
+struct wmi_swba {
+ u8 beacon_pending;
+} __packed;
+
+enum wmi_cmd_id {
+ WMI_ECHO_CMDID = 0x0001,
+ WMI_ACCESS_MEMORY_CMDID,
+
+ /* Commands to Target */
+ WMI_DISABLE_INTR_CMDID,
+ WMI_ENABLE_INTR_CMDID,
+ WMI_RX_LINK_CMDID,
+ WMI_ATH_INIT_CMDID,
+ WMI_ABORT_TXQ_CMDID,
+ WMI_STOP_TX_DMA_CMDID,
+ WMI_STOP_DMA_RECV_CMDID,
+ WMI_ABORT_TX_DMA_CMDID,
+ WMI_DRAIN_TXQ_CMDID,
+ WMI_DRAIN_TXQ_ALL_CMDID,
+ WMI_START_RECV_CMDID,
+ WMI_STOP_RECV_CMDID,
+ WMI_FLUSH_RECV_CMDID,
+ WMI_SET_MODE_CMDID,
+ WMI_RESET_CMDID,
+ WMI_NODE_CREATE_CMDID,
+ WMI_NODE_REMOVE_CMDID,
+ WMI_VAP_REMOVE_CMDID,
+ WMI_VAP_CREATE_CMDID,
+ WMI_BEACON_UPDATE_CMDID,
+ WMI_REG_READ_CMDID,
+ WMI_REG_WRITE_CMDID,
+ WMI_RC_STATE_CHANGE_CMDID,
+ WMI_RC_RATE_UPDATE_CMDID,
+ WMI_DEBUG_INFO_CMDID,
+ WMI_HOST_ATTACH,
+ WMI_TARGET_IC_UPDATE_CMDID,
+ WMI_TGT_STATS_CMDID,
+ WMI_TX_AGGR_ENABLE_CMDID,
+ WMI_TGT_DETACH_CMDID,
+ WMI_TGT_TXQ_ENABLE_CMDID,
+};
+
+enum wmi_event_id {
+ WMI_TGT_RDY_EVENTID = 0x1001,
+ WMI_SWBA_EVENTID,
+ WMI_FATAL_EVENTID,
+ WMI_TXTO_EVENTID,
+ WMI_BMISS_EVENTID,
+ WMI_WLAN_TXCOMP_EVENTID,
+ WMI_DELBA_EVENTID,
+ WMI_TXRATE_EVENTID,
+};
+
+struct wmi {
+ struct ath9k_htc_priv *drv_priv;
+ struct htc_target *htc;
+ enum htc_endpoint_id ctrl_epid;
+ struct mutex op_mutex;
+ struct completion cmd_wait;
+ u16 tx_seq_id;
+ u8 *cmd_rsp_buf;
+ u32 cmd_rsp_len;
+ bool stopped;
+
+ struct sk_buff *wmi_skb;
+ spinlock_t wmi_lock;
+};
+
+struct wmi *ath9k_init_wmi(struct ath9k_htc_priv *priv);
+void ath9k_deinit_wmi(struct ath9k_htc_priv *priv);
+int ath9k_wmi_connect(struct htc_target *htc, struct wmi *wmi,
+ enum htc_endpoint_id *wmi_ctrl_epid);
+int ath9k_wmi_cmd(struct wmi *wmi, enum wmi_cmd_id cmd_id,
+ u8 *cmd_buf, u32 cmd_len,
+ u8 *rsp_buf, u32 rsp_len,
+ u32 timeout);
+void ath9k_wmi_tasklet(unsigned long data);
+
+#define WMI_CMD(_wmi_cmd) \
+ do { \
+ ret = ath9k_wmi_cmd(priv->wmi, _wmi_cmd, NULL, 0, \
+ (u8 *) &cmd_rsp, \
+ sizeof(cmd_rsp), HZ); \
+ } while (0)
+
+#define WMI_CMD_BUF(_wmi_cmd, _buf) \
+ do { \
+ ret = ath9k_wmi_cmd(priv->wmi, _wmi_cmd, \
+ (u8 *) _buf, sizeof(*_buf), \
+ &cmd_rsp, sizeof(cmd_rsp), HZ); \
+ } while (0)
+
+#endif /* WMI_H */
ATH_DBG_PS = 0x00000800,
ATH_DBG_HWTIMER = 0x00001000,
ATH_DBG_BTCOEX = 0x00002000,
+ ATH_DBG_WMI = 0x00004000,
ATH_DBG_ANY = 0xffffffff
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff