atheros: put atheros wireless drivers into ath/

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 216 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/rc.h b/drivers/net/wireless/ath/ath9k/rc.h
new file mode 100644
index 0000000..e3abd76
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/rc.h
@@ -0,0 +1,216 @@
+/*
+ * Copyright (c) 2004 Sam Leffler, Errno Consulting
+ * Copyright (c) 2004 Video54 Technologies, Inc.
+ * Copyright (c) 2008-2009 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 RC_H
+#define RC_H
+
+struct ath_softc;
+
+#define ATH_RATE_MAX     30
+#define RATE_TABLE_SIZE  64
+#define MAX_TX_RATE_PHY  48
+
+/* VALID_ALL - valid for 20/40/Legacy,
+ * VALID - Legacy only,
+ * VALID_20 - HT 20 only,
+ * VALID_40 - HT 40 only */
+
+#define INVALID    0x0
+#define VALID      0x1
+#define VALID_20   0x2
+#define VALID_40   0x4
+#define VALID_2040 (VALID_20|VALID_40)
+#define VALID_ALL  (VALID_2040|VALID)
+
+enum {
+	WLAN_RC_PHY_OFDM,
+	WLAN_RC_PHY_CCK,
+	WLAN_RC_PHY_HT_20_SS,
+	WLAN_RC_PHY_HT_20_DS,
+	WLAN_RC_PHY_HT_40_SS,
+	WLAN_RC_PHY_HT_40_DS,
+	WLAN_RC_PHY_HT_20_SS_HGI,
+	WLAN_RC_PHY_HT_20_DS_HGI,
+	WLAN_RC_PHY_HT_40_SS_HGI,
+	WLAN_RC_PHY_HT_40_DS_HGI,
+	WLAN_RC_PHY_MAX
+};
+
+#define WLAN_RC_PHY_DS(_phy)   ((_phy == WLAN_RC_PHY_HT_20_DS)		\
+				|| (_phy == WLAN_RC_PHY_HT_40_DS)	\
+				|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI)	\
+				|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
+#define WLAN_RC_PHY_40(_phy)   ((_phy == WLAN_RC_PHY_HT_40_SS)		\
+				|| (_phy == WLAN_RC_PHY_HT_40_DS)	\
+				|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI)	\
+				|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
+#define WLAN_RC_PHY_SGI(_phy)  ((_phy == WLAN_RC_PHY_HT_20_SS_HGI)      \
+				|| (_phy == WLAN_RC_PHY_HT_20_DS_HGI)   \
+				|| (_phy == WLAN_RC_PHY_HT_40_SS_HGI)   \
+				|| (_phy == WLAN_RC_PHY_HT_40_DS_HGI))
+
+#define WLAN_RC_PHY_HT(_phy)    (_phy >= WLAN_RC_PHY_HT_20_SS)
+
+#define WLAN_RC_CAP_MODE(capflag) (((capflag & WLAN_RC_HT_FLAG) ?	\
+		(capflag & WLAN_RC_40_FLAG) ? VALID_40 : VALID_20 : VALID))
+
+/* Return TRUE if flag supports HT20 && client supports HT20 or
+ * return TRUE if flag supports HT40 && client supports HT40.
+ * This is used becos some rates overlap between HT20/HT40.
+ */
+#define WLAN_RC_PHY_HT_VALID(flag, capflag)			\
+	(((flag & VALID_20) && !(capflag & WLAN_RC_40_FLAG)) || \
+	 ((flag & VALID_40) && (capflag & WLAN_RC_40_FLAG)))
+
+#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 ath_rate_table - Rate Control table
+ * @valid: valid for use in rate control
+ * @valid_single_stream: valid for use in rate control for
+ * 	single stream operation
+ * @phy: CCK/OFDM
+ * @ratekbps: rate in Kbits per second
+ * @user_ratekbps: user rate in Kbits per second
+ * @ratecode: rate that goes into HW descriptors
+ * @short_preamble: Mask for enabling short preamble in ratecode for CCK
+ * @dot11rate: value that goes into supported
+ * 	rates info element of MLME
+ * @ctrl_rate: Index of next lower basic rate, used for duration computation
+ * @max_4ms_framelen: maximum frame length(bytes) for tx duration
+ * @probe_interval: interval for rate control to probe for other rates
+ * @rssi_reduce_interval: interval for rate control to reduce rssi
+ * @initial_ratemax: initial ratemax value
+ */
+struct ath_rate_table {
+	int rate_cnt;
+	struct {
+		int valid;
+		int valid_single_stream;
+		u8 phy;
+		u32 ratekbps;
+		u32 user_ratekbps;
+		u8 ratecode;
+		u8 short_preamble;
+		u8 dot11rate;
+		u8 ctrl_rate;
+		int8_t rssi_ack_validmin;
+		int8_t rssi_ack_deltamin;
+		u8 base_index;
+		u8 cw40index;
+		u8 sgi_index;
+		u8 ht_index;
+		u32 max_4ms_framelen;
+	} info[RATE_TABLE_SIZE];
+	u32 probe_interval;
+	u32 rssi_reduce_interval;
+	u8 initial_ratemax;
+};
+
+struct ath_tx_ratectrl_state {
+	int8_t rssi_thres;	/* required rssi for this rate (dB) */
+	u8 per;			/* recent estimate of packet error rate (%) */
+};
+
+struct ath_rateset {
+	u8 rs_nrates;
+	u8 rs_rates[ATH_RATE_MAX];
+};
+
+/**
+ * struct ath_rate_priv - Rate Control priv data
+ * @state: RC state
+ * @rssi_last: last ACK rssi
+ * @rssi_last_lookup: last ACK rssi used for lookup
+ * @rssi_last_prev: previous last ACK rssi
+ * @rssi_last_prev2: 2nd previous last ACK rssi
+ * @rssi_sum_cnt: count of rssi_sum for averaging
+ * @rssi_sum_rate: rate that we are averaging
+ * @rssi_sum: running sum of rssi for averaging
+ * @probe_rate: rate we are probing at
+ * @rssi_time: msec timestamp for last ack rssi
+ * @rssi_down_time: msec timestamp for last down step
+ * @probe_time: msec timestamp for last probe
+ * @hw_maxretry_pktcnt: num of packets since we got HW max retry error
+ * @max_valid_rate: maximum number of valid rate
+ * @per_down_time: msec timestamp for last PER down step
+ * @valid_phy_ratecnt: valid rate count
+ * @rate_max_phy: phy index for the max rate
+ * @probe_interval: interval for ratectrl to probe for other rates
+ * @prev_data_rix: rate idx of last data frame
+ * @ht_cap: HT capabilities
+ * @neg_rates: Negotatied rates
+ * @neg_ht_rates: Negotiated HT rates
+ */
+struct ath_rate_priv {
+	int8_t rssi_last;
+	int8_t rssi_last_lookup;
+	int8_t rssi_last_prev;
+	int8_t rssi_last_prev2;
+	int32_t rssi_sum_cnt;
+	int32_t rssi_sum_rate;
+	int32_t rssi_sum;
+	u8 rate_table_size;
+	u8 probe_rate;
+	u8 hw_maxretry_pktcnt;
+	u8 max_valid_rate;
+	u8 valid_rate_index[RATE_TABLE_SIZE];
+	u8 ht_cap;
+	u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX];
+	u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][RATE_TABLE_SIZE];
+	u8 rate_max_phy;
+	u32 rssi_time;
+	u32 rssi_down_time;
+	u32 probe_time;
+	u32 per_down_time;
+	u32 probe_interval;
+	u32 prev_data_rix;
+	u32 tx_triglevel_max;
+	struct ath_tx_ratectrl_state state[RATE_TABLE_SIZE];
+	struct ath_rateset neg_rates;
+	struct ath_rateset neg_ht_rates;
+	struct ath_rate_softc *asc;
+};
+
+enum ath9k_internal_frame_type {
+	ATH9K_NOT_INTERNAL,
+	ATH9K_INT_PAUSE,
+	ATH9K_INT_UNPAUSE
+};
+
+struct ath_tx_info_priv {
+	struct ath_wiphy *aphy;
+	struct ath_tx_status tx;
+	int n_frames;
+	int n_bad_frames;
+	bool update_rc;
+	enum ath9k_internal_frame_type frame_type;
+};
+
+#define ATH_TX_INFO_PRIV(tx_info) \
+	((struct ath_tx_info_priv *)((tx_info)->rate_driver_data[0]))
+
+void ath_rate_attach(struct ath_softc *sc);
+u8 ath_rate_findrateix(struct ath_softc *sc, u8 dot11_rate);
+int ath_rate_control_register(void);
+void ath_rate_control_unregister(void);
+
+#endif /* RC_H */