1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * NXP Wireless LAN device driver: utility functions 4 * 5 * Copyright 2011-2020 NXP 6 */ 7 8 #ifndef _MWIFIEX_UTIL_H_ 9 #define _MWIFIEX_UTIL_H_ 10 11 struct mwifiex_private; 12 13 struct mwifiex_dma_mapping { 14 dma_addr_t addr; 15 size_t len; 16 }; 17 18 struct mwifiex_cb { 19 struct mwifiex_dma_mapping dma_mapping; 20 union { 21 struct mwifiex_rxinfo rx_info; 22 struct mwifiex_txinfo tx_info; 23 }; 24 }; 25 26 /* size/addr for mwifiex_debug_info */ 27 #define item_size(n) (sizeof_field(struct mwifiex_debug_info, n)) 28 #define item_addr(n) (offsetof(struct mwifiex_debug_info, n)) 29 30 /* size/addr for struct mwifiex_adapter */ 31 #define adapter_item_size(n) (sizeof_field(struct mwifiex_adapter, n)) 32 #define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n)) 33 34 struct mwifiex_debug_data { 35 char name[32]; /* variable/array name */ 36 u32 size; /* size of the variable/array */ 37 size_t addr; /* address of the variable/array */ 38 int num; /* number of variables in an array */ 39 }; 40 41 static inline struct mwifiex_rxinfo *MWIFIEX_SKB_RXCB(struct sk_buff *skb) 42 { 43 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb; 44 45 BUILD_BUG_ON(sizeof(struct mwifiex_cb) > sizeof(skb->cb)); 46 return &cb->rx_info; 47 } 48 49 static inline struct mwifiex_txinfo *MWIFIEX_SKB_TXCB(struct sk_buff *skb) 50 { 51 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb; 52 53 return &cb->tx_info; 54 } 55 56 static inline void mwifiex_store_mapping(struct sk_buff *skb, 57 struct mwifiex_dma_mapping *mapping) 58 { 59 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb; 60 61 memcpy(&cb->dma_mapping, mapping, sizeof(*mapping)); 62 } 63 64 static inline void mwifiex_get_mapping(struct sk_buff *skb, 65 struct mwifiex_dma_mapping *mapping) 66 { 67 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb; 68 69 memcpy(mapping, &cb->dma_mapping, sizeof(*mapping)); 70 } 71 72 static inline dma_addr_t MWIFIEX_SKB_DMA_ADDR(struct sk_buff *skb) 73 { 74 struct mwifiex_dma_mapping mapping; 75 76 mwifiex_get_mapping(skb, &mapping); 77 78 return mapping.addr; 79 } 80 81 int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf, 82 struct mwifiex_debug_info *info); 83 84 static inline void le16_unaligned_add_cpu(__le16 *var, u16 val) 85 { 86 put_unaligned_le16(get_unaligned_le16(var) + val, var); 87 } 88 89 #endif /* !_MWIFIEX_UTIL_H_ */ 90