1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/net/wireless/eswin/ecrnx_bfmer.h b/drivers/net/wireless/eswin/ecrnx_bfmer.h
new file mode 100644
index 000000000000..6bb30ef27895
--- /dev/null
+++ b/drivers/net/wireless/eswin/ecrnx_bfmer.h
@@ -0,0 +1,100 @@
+/**
+ ******************************************************************************
+ *
+ * @file ecrnx_bfmer.h
+ *
+ * @brief VHT Beamformer function declarations
+ *
+ * Copyright (C) ESWIN 2015-2020
+ *
+ ******************************************************************************
+ */
+
+#ifndef _ECRNX_BFMER_H_
+#define _ECRNX_BFMER_H_
+
+/**
+ * INCLUDE FILES
+ ******************************************************************************
+ */
+
+#include "ecrnx_defs.h"
+
+/**
+ * DEFINES
+ ******************************************************************************
+ */
+
+/// Maximal supported report length (in bytes)
+#define ECRNX_BFMER_REPORT_MAX_LEN     2048
+
+/// Size of the allocated report space (twice the maximum report length)
+#define ECRNX_BFMER_REPORT_SPACE_SIZE  (ECRNX_BFMER_REPORT_MAX_LEN * 2)
+
+/**
+ * TYPE DEFINITIONS
+ ******************************************************************************
+ */
+
+/*
+ * Structure used to store a beamforming report.
+ */
+struct ecrnx_bfmer_report {
+    dma_addr_t dma_addr;    /* Virtual address provided to MAC for
+                               DMA transfer of the Beamforming Report */
+    unsigned int length;    /* Report Length */
+    u8 report[1];           /* Report to be used for VHT TX Beamforming */
+};
+
+/**
+ * FUNCTION DECLARATIONS
+ ******************************************************************************
+ */
+
+/**
+ ******************************************************************************
+ * @brief Allocate memory aiming to contains the Beamforming Report received
+ * from a Beamformee capable capable.
+ * The providing length shall be large enough to contain the VHT Compressed
+ * Beaforming Report and the MU Exclusive part.
+ * It also perform a DMA Mapping providing an address to be provided to the HW
+ * responsible for the DMA transfer of the report.
+ * If successful a struct ecrnx_bfmer_report object is allocated, it's address
+ * is stored in ecrnx_sta->bfm_report.
+ *
+ * @param[in] ecrnx_hw   PHY Information
+ * @param[in] ecrnx_sta  Peer STA Information
+ * @param[in] length    Memory size to be allocated
+ *
+ * @return 0 if operation is successful, else -1.
+ ******************************************************************************
+ */
+int ecrnx_bfmer_report_add(struct ecrnx_hw *ecrnx_hw, struct ecrnx_sta *ecrnx_sta,
+                          unsigned int length);
+
+/**
+ ******************************************************************************
+ * @brief Free a previously allocated memory intended to be used for
+ * Beamforming Reports.
+ *
+ * @param[in] ecrnx_hw   PHY Information
+ * @param[in] ecrnx_sta  Peer STA Information
+ *
+ ******************************************************************************
+ */
+void ecrnx_bfmer_report_del(struct ecrnx_hw *ecrnx_hw, struct ecrnx_sta *ecrnx_sta);
+
+#ifdef CONFIG_ECRNX_FULLMAC
+/**
+ ******************************************************************************
+ * @brief Parse a Rx VHT-MCS map in order to deduce the maximum number of
+ * Spatial Streams supported by a beamformee.
+ *
+ * @param[in] vht_capa  Received VHT Capability field.
+ *
+ ******************************************************************************
+ */
+u8 ecrnx_bfmer_get_rx_nss(const struct ieee80211_vht_cap *vht_capa);
+#endif /* CONFIG_ECRNX_FULLMAC */
+
+#endif /* _ECRNX_BFMER_H_ */