linux-kernel - [PATCH 38/43] wifi: nxpwifi: add util.h

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Message-Id: <20240621075208.513497-39-yu-hao.lin@nxp.com>
Date: Fri, 21 Jun 2024 15:52:03 +0800
From: David Lin <yu-hao.lin@....com>
To: linux-wireless@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	briannorris@...omium.org,
	kvalo@...nel.org,
	francesco@...cini.it,
	tsung-hsien.hsieh@....com,
	David Lin <yu-hao.lin@....com>
Subject: [PATCH 38/43] wifi: nxpwifi: add util.h

Signed-off-by: David Lin <yu-hao.lin@....com>
---
 drivers/net/wireless/nxp/nxpwifi/util.h | 90 +++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 drivers/net/wireless/nxp/nxpwifi/util.h

diff --git a/drivers/net/wireless/nxp/nxpwifi/util.h b/drivers/net/wireless/nxp/nxpwifi/util.h
new file mode 100644
index 000000000000..b9cccb340933
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/util.h
@@ -0,0 +1,90 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * NXP Wireless LAN device driver: utility functions
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#ifndef _NXPWIFI_UTIL_H_
+#define _NXPWIFI_UTIL_H_
+
+struct nxpwifi_private;
+
+struct nxpwifi_dma_mapping {
+	dma_addr_t addr;
+	size_t len;
+};
+
+struct nxpwifi_cb {
+	struct nxpwifi_dma_mapping dma_mapping;
+	union {
+		struct nxpwifi_rxinfo rx_info;
+		struct nxpwifi_txinfo tx_info;
+	};
+};
+
+/* size/addr for nxpwifi_debug_info */
+#define item_size(n)		(sizeof_field(struct nxpwifi_debug_info, n))
+#define item_addr(n)		(offsetof(struct nxpwifi_debug_info, n))
+
+/* size/addr for struct nxpwifi_adapter */
+#define adapter_item_size(n)	(sizeof_field(struct nxpwifi_adapter, n))
+#define adapter_item_addr(n)	(offsetof(struct nxpwifi_adapter, n))
+
+struct nxpwifi_debug_data {
+	char name[32];		/* variable/array name */
+	u32 size;		/* size of the variable/array */
+	size_t addr;		/* address of the variable/array */
+	int num;		/* number of variables in an array */
+};
+
+static inline struct nxpwifi_rxinfo *NXPWIFI_SKB_RXCB(struct sk_buff *skb)
+{
+	struct nxpwifi_cb *cb = (struct nxpwifi_cb *)skb->cb;
+
+	BUILD_BUG_ON(sizeof(struct nxpwifi_cb) > sizeof(skb->cb));
+	return &cb->rx_info;
+}
+
+static inline struct nxpwifi_txinfo *NXPWIFI_SKB_TXCB(struct sk_buff *skb)
+{
+	struct nxpwifi_cb *cb = (struct nxpwifi_cb *)skb->cb;
+
+	return &cb->tx_info;
+}
+
+static inline void nxpwifi_store_mapping(struct sk_buff *skb,
+					 struct nxpwifi_dma_mapping *mapping)
+{
+	struct nxpwifi_cb *cb = (struct nxpwifi_cb *)skb->cb;
+
+	memcpy(&cb->dma_mapping, mapping, sizeof(*mapping));
+}
+
+static inline void nxpwifi_get_mapping(struct sk_buff *skb,
+				       struct nxpwifi_dma_mapping *mapping)
+{
+	struct nxpwifi_cb *cb = (struct nxpwifi_cb *)skb->cb;
+
+	memcpy(mapping, &cb->dma_mapping, sizeof(*mapping));
+}
+
+static inline dma_addr_t NXPWIFI_SKB_DMA_ADDR(struct sk_buff *skb)
+{
+	struct nxpwifi_dma_mapping mapping;
+
+	nxpwifi_get_mapping(skb, &mapping);
+
+	return mapping.addr;
+}
+
+int nxpwifi_debug_info_to_buffer(struct nxpwifi_private *priv, char *buf,
+				 struct nxpwifi_debug_info *info);
+
+static inline void le16_unaligned_add_cpu(__le16 *var, u16 val)
+{
+	put_unaligned_le16(get_unaligned_le16(var) + val, var);
+}
+
+int nxpwifi_append_data_tlv(u16 id, u8 *data, int len, u8 *pos, u8 *cmd_end);
+#endif /* !_NXPWIFI_UTIL_H_ */
-- 
2.34.1