From: Sujith <Sujith.Manoharan@xxxxxxxxxxx> Features: * Station mode * IBSS mode * Monitor mode * Legacy support * HT support * TX/RX 11n Aggregation * HW encryption * LED For more information: http://wireless.kernel.org/en/users/Drivers/ath9k_htc Signed-off-by: Sujith <Sujith.Manoharan@xxxxxxxxxxx> Signed-off-by: Vasanthakumar Thiagarajan <vasanth@xxxxxxxxxxx> Signed-off-by: Senthil Balasubramanian <senthilkumar@xxxxxxxxxxx> --- drivers/net/wireless/ath/Kconfig | 2 +- drivers/net/wireless/ath/ath9k/Kconfig | 21 + drivers/net/wireless/ath/ath9k/Makefile | 10 + drivers/net/wireless/ath/ath9k/common.c | 421 ++++++ drivers/net/wireless/ath/ath9k/common.h | 17 + drivers/net/wireless/ath/ath9k/hif_usb.c | 936 +++++++++++++ drivers/net/wireless/ath/ath9k/hif_usb.h | 105 ++ drivers/net/wireless/ath/ath9k/htc.h | 439 +++++++ drivers/net/wireless/ath/ath9k/htc_drv_beacon.c | 260 ++++ drivers/net/wireless/ath/ath9k/htc_drv_init.c | 699 ++++++++++ drivers/net/wireless/ath/ath9k/htc_drv_main.c | 1590 +++++++++++++++++++++++ drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 605 +++++++++ drivers/net/wireless/ath/ath9k/htc_hst.c | 463 +++++++ drivers/net/wireless/ath/ath9k/htc_hst.h | 246 ++++ drivers/net/wireless/ath/ath9k/mac.h | 26 + drivers/net/wireless/ath/ath9k/wmi.c | 319 +++++ drivers/net/wireless/ath/ath9k/wmi.h | 126 ++ drivers/net/wireless/ath/debug.h | 1 + 18 files changed, 6285 insertions(+), 1 deletions(-) create mode 100644 drivers/net/wireless/ath/ath9k/hif_usb.c create mode 100644 drivers/net/wireless/ath/ath9k/hif_usb.h create mode 100644 drivers/net/wireless/ath/ath9k/htc.h create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_beacon.c create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_init.c create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_main.c create mode 100644 drivers/net/wireless/ath/ath9k/htc_drv_txrx.c create mode 100644 drivers/net/wireless/ath/ath9k/htc_hst.c create mode 100644 drivers/net/wireless/ath/ath9k/htc_hst.h create mode 100644 drivers/net/wireless/ath/ath9k/wmi.c create mode 100644 drivers/net/wireless/ath/ath9k/wmi.h diff --git a/drivers/net/wireless/ath/Kconfig b/drivers/net/wireless/ath/Kconfig index 4e7a7fd..0a75be0 100644 --- a/drivers/net/wireless/ath/Kconfig +++ b/drivers/net/wireless/ath/Kconfig @@ -3,7 +3,7 @@ menuconfig ATH_COMMON 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: diff --git a/drivers/net/wireless/ath/ath9k/Kconfig b/drivers/net/wireless/ath/ath9k/Kconfig index 5774cea..35f23bd 100644 --- a/drivers/net/wireless/ath/ath9k/Kconfig +++ b/drivers/net/wireless/ath/ath9k/Kconfig @@ -32,3 +32,24 @@ config ATH9K_DEBUGFS 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. diff --git a/drivers/net/wireless/ath/ath9k/Makefile b/drivers/net/wireless/ath/ath9k/Makefile index 6b50d5e..97133be 100644 --- a/drivers/net/wireless/ath/ath9k/Makefile +++ b/drivers/net/wireless/ath/ath9k/Makefile @@ -28,3 +28,13 @@ obj-$(CONFIG_ATH9K_HW) += ath9k_hw.o obj-$(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 diff --git a/drivers/net/wireless/ath/ath9k/common.c b/drivers/net/wireless/ath/ath9k/common.c index 4d775ae..7902d28 100644 --- a/drivers/net/wireless/ath/ath9k/common.c +++ b/drivers/net/wireless/ath/ath9k/common.c @@ -286,6 +286,427 @@ int ath9k_cmn_padpos(__le16 frame_control) } 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; diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h index 042999c..bbcc57f 100644 --- a/drivers/net/wireless/ath/ath9k/common.h +++ b/drivers/net/wireless/ath/ath9k/common.h @@ -23,6 +23,8 @@ /* 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 @@ -125,3 +127,18 @@ void ath9k_cmn_rx_skb_postprocess(struct ath_common *common, 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); diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c new file mode 100644 index 0000000..a6c8007 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/hif_usb.c @@ -0,0 +1,936 @@ +/* + * 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); + } +} + +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_unlink_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_unlink_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; + + 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); + kfree(hif_dev); + } + + if (hif_dev->flags & HIF_USB_START) + usb_reset_device(udev); + + usb_put_dev(udev); + + dev_info(&udev->dev, "ath9k_htc: USB layer deinitialized\n"); +} + +static struct usb_driver ath9k_hif_usb_driver = { + .name = "ath9k_hif_usb", + .probe = ath9k_hif_usb_probe, + .disconnect = ath9k_hif_usb_disconnect, + .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); +} diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.h b/drivers/net/wireless/ath/ath9k/hif_usb.h new file mode 100644 index 0000000..7cc3762 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/hif_usb.h @@ -0,0 +1,105 @@ +/* + * 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 */ diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h new file mode 100644 index 0000000..8958da9 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -0,0 +1,439 @@ +/* + * 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; + struct ieee80211_sta *sta; + 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_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 */ diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c new file mode 100644 index 0000000..25f5b53 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c @@ -0,0 +1,260 @@ +/* + * 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; + } +} diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c new file mode 100644 index 0000000..3256edb --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c @@ -0,0 +1,699 @@ +/* + * 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); + } +} + +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); diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c new file mode 100644 index 0000000..3b4c636 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -0,0 +1,1590 @@ +/* + * 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_sta *sta, + u8 tid, bool oper) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_aggr aggr; + 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; + + if (!ista) + return -EINVAL; + + memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr)); + + aggr.sta_index = ista->index; + 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->sta, 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->sta, 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; + } + + 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; + work->sta = sta; + 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; +} + +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, +}; diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c new file mode 100644 index 0000000..9f9bb94 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c @@ -0,0 +1,605 @@ +/* + * 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->noise = ath9k_hw_getchan_noise(priv->ah, priv->ah->curchan); + 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; +} diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.c b/drivers/net/wireless/ath/ath9k/htc_hst.c new file mode 100644 index 0000000..33bda7d --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_hst.c @@ -0,0 +1,463 @@ +/* + * 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 (*(u32 *) skb->data == 0xC600) + /* 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); +} diff --git a/drivers/net/wireless/ath/ath9k/htc_hst.h b/drivers/net/wireless/ath/ath9k/htc_hst.h new file mode 100644 index 0000000..cd7048f --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_hst.h @@ -0,0 +1,246 @@ +/* + * 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 */ diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h index 29851e6..a5e543b 100644 --- a/drivers/net/wireless/ath/ath9k/mac.h +++ b/drivers/net/wireless/ath/ath9k/mac.h @@ -150,6 +150,32 @@ struct ath_rx_status { 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 diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c new file mode 100644 index 0000000..818dea0 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/wmi.c @@ -0,0 +1,319 @@ +/* + * 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; +} diff --git a/drivers/net/wireless/ath/ath9k/wmi.h b/drivers/net/wireless/ath/ath9k/wmi.h new file mode 100644 index 0000000..39ef926 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/wmi.h @@ -0,0 +1,126 @@ +/* + * 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 */ diff --git a/drivers/net/wireless/ath/debug.h b/drivers/net/wireless/ath/debug.h index 8263633..873bf52 100644 --- a/drivers/net/wireless/ath/debug.h +++ b/drivers/net/wireless/ath/debug.h @@ -59,6 +59,7 @@ enum ATH_DEBUG { ATH_DBG_PS = 0x00000800, ATH_DBG_HWTIMER = 0x00001000, ATH_DBG_BTCOEX = 0x00002000, + ATH_DBG_WMI = 0x00004000, ATH_DBG_ANY = 0xffffffff }; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
