Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 205 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/common-spectral.h b/drivers/net/wireless/ath/ath9k/common-spectral.h
new file mode 100644
index 000000000..011d8ab8b
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/common-spectral.h
@@ -0,0 +1,205 @@
+/*
+ * Copyright (c) 2013 Qualcomm Atheros, 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 SPECTRAL_H
+#define SPECTRAL_H
+
+#include "../spectral_common.h"
+
+/* enum spectral_mode:
+ *
+ * @SPECTRAL_DISABLED: spectral mode is disabled
+ * @SPECTRAL_BACKGROUND: hardware sends samples when it is not busy with
+ *	something else.
+ * @SPECTRAL_MANUAL: spectral scan is enabled, triggering for samples
+ *	is performed manually.
+ * @SPECTRAL_CHANSCAN: Like manual, but also triggered when changing channels
+ *	during a channel scan.
+ */
+enum spectral_mode {
+	SPECTRAL_DISABLED = 0,
+	SPECTRAL_BACKGROUND,
+	SPECTRAL_MANUAL,
+	SPECTRAL_CHANSCAN,
+};
+
+#define SPECTRAL_SCAN_BITMASK		0x10
+/* Radar info packet format, used for DFS and spectral formats. */
+struct ath_radar_info {
+	u8 pulse_length_pri;
+	u8 pulse_length_ext;
+	u8 pulse_bw_info;
+} __packed;
+
+/* The HT20 spectral data has 4 bytes of additional information at it's end.
+ *
+ * [7:0]: all bins {max_magnitude[1:0], bitmap_weight[5:0]}
+ * [7:0]: all bins  max_magnitude[9:2]
+ * [7:0]: all bins {max_index[5:0], max_magnitude[11:10]}
+ * [3:0]: max_exp (shift amount to size max bin to 8-bit unsigned)
+ */
+struct ath_ht20_mag_info {
+	u8 all_bins[3];
+	u8 max_exp;
+} __packed;
+
+/* WARNING: don't actually use this struct! MAC may vary the amount of
+ * data by -1/+2. This struct is for reference only.
+ */
+struct ath_ht20_fft_packet {
+	u8 data[SPECTRAL_HT20_NUM_BINS];
+	struct ath_ht20_mag_info mag_info;
+	struct ath_radar_info radar_info;
+} __packed;
+
+#define SPECTRAL_HT20_TOTAL_DATA_LEN	(sizeof(struct ath_ht20_fft_packet))
+#define	SPECTRAL_HT20_SAMPLE_LEN	(sizeof(struct ath_ht20_mag_info) +\
+					SPECTRAL_HT20_NUM_BINS)
+
+/* Dynamic 20/40 mode:
+ *
+ * [7:0]: lower bins {max_magnitude[1:0], bitmap_weight[5:0]}
+ * [7:0]: lower bins  max_magnitude[9:2]
+ * [7:0]: lower bins {max_index[5:0], max_magnitude[11:10]}
+ * [7:0]: upper bins {max_magnitude[1:0], bitmap_weight[5:0]}
+ * [7:0]: upper bins  max_magnitude[9:2]
+ * [7:0]: upper bins {max_index[5:0], max_magnitude[11:10]}
+ * [3:0]: max_exp (shift amount to size max bin to 8-bit unsigned)
+ */
+struct ath_ht20_40_mag_info {
+	u8 lower_bins[3];
+	u8 upper_bins[3];
+	u8 max_exp;
+} __packed;
+
+/* WARNING: don't actually use this struct! MAC may vary the amount of
+ * data. This struct is for reference only.
+ */
+struct ath_ht20_40_fft_packet {
+	u8 data[SPECTRAL_HT20_40_NUM_BINS];
+	struct ath_ht20_40_mag_info mag_info;
+	struct ath_radar_info radar_info;
+} __packed;
+
+struct ath_spec_scan_priv {
+	struct ath_hw *ah;
+	/* relay(fs) channel for spectral scan */
+	struct rchan *rfs_chan_spec_scan;
+	enum spectral_mode spectral_mode;
+	struct ath_spec_scan spec_config;
+};
+
+#define SPECTRAL_HT20_40_TOTAL_DATA_LEN	(sizeof(struct ath_ht20_40_fft_packet))
+#define	SPECTRAL_HT20_40_SAMPLE_LEN	(sizeof(struct ath_ht20_40_mag_info) +\
+					SPECTRAL_HT20_40_NUM_BINS)
+
+#define	SPECTRAL_SAMPLE_MAX_LEN		SPECTRAL_HT20_40_SAMPLE_LEN
+
+/* grabs the max magnitude from the all/upper/lower bins */
+static inline u16 spectral_max_magnitude(u8 *bins)
+{
+	return (bins[0] & 0xc0) >> 6 |
+	       (bins[1] & 0xff) << 2 |
+	       (bins[2] & 0x03) << 10;
+}
+
+/* return the max magnitude from the all/upper/lower bins */
+static inline u8 spectral_max_index(u8 *bins, int num_bins)
+{
+	s8 m = (bins[2] & 0xfc) >> 2;
+	u8 zero_idx = num_bins / 2;
+
+	/* It's a 5 bit signed int, remove its sign and use one's
+	 * complement interpretation to add the sign back to the 8
+	 * bit int
+	 */
+	if (m & 0x20) {
+		m &= ~0x20;
+		m |= 0xe0;
+	}
+
+	/* Bring the zero point to the beginning
+	 * instead of the middle so that we can use
+	 * it for array lookup and that we don't deal
+	 * with negative values later
+	 */
+	m += zero_idx;
+
+	/* Sanity check to make sure index is within bounds */
+	if (m < 0 || m > num_bins - 1)
+		m = 0;
+
+	return m;
+}
+
+static inline u8 spectral_max_index_ht40(u8 *bins)
+{
+	u8 idx;
+
+	idx = spectral_max_index(bins, SPECTRAL_HT20_40_NUM_BINS);
+
+	/* positive values and zero are starting at the beginning
+	 * of the data field.
+	 */
+	return idx % (SPECTRAL_HT20_40_NUM_BINS / 2);
+}
+
+static inline u8 spectral_max_index_ht20(u8 *bins)
+{
+	return spectral_max_index(bins, SPECTRAL_HT20_NUM_BINS);
+}
+
+/* return the bitmap weight from the all/upper/lower bins */
+static inline u8 spectral_bitmap_weight(u8 *bins)
+{
+	return bins[0] & 0x3f;
+}
+
+#ifdef CONFIG_ATH9K_COMMON_SPECTRAL
+void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv, struct dentry *debugfs_phy);
+void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv);
+
+void ath9k_cmn_spectral_scan_trigger(struct ath_common *common,
+				 struct ath_spec_scan_priv *spec_priv);
+int ath9k_cmn_spectral_scan_config(struct ath_common *common,
+			       struct ath_spec_scan_priv *spec_priv,
+			       enum spectral_mode spectral_mode);
+int ath_cmn_process_fft(struct ath_spec_scan_priv *spec_priv, struct ieee80211_hdr *hdr,
+		    struct ath_rx_status *rs, u64 tsf);
+#else
+static inline void ath9k_cmn_spectral_init_debug(struct ath_spec_scan_priv *spec_priv,
+						 struct dentry *debugfs_phy)
+{
+}
+
+static inline void ath9k_cmn_spectral_deinit_debug(struct ath_spec_scan_priv *spec_priv)
+{
+}
+
+static inline void ath9k_cmn_spectral_scan_trigger(struct ath_common *common,
+						   struct ath_spec_scan_priv *spec_priv)
+{
+}
+
+static inline int ath_cmn_process_fft(struct ath_spec_scan_priv *spec_priv,
+				      struct ieee80211_hdr *hdr,
+				      struct ath_rx_status *rs, u64 tsf)
+{
+	return 0;
+}
+#endif /* CONFIG_ATH9K_COMMON_SPECTRAL */
+
+#endif /* SPECTRAL_H */