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
MWIFIEX_SKB_RXCB(struct sk_buff * skb)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
MWIFIEX_SKB_TXCB(struct sk_buff * skb)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
mwifiex_store_mapping(struct sk_buff * skb,struct mwifiex_dma_mapping * mapping)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
mwifiex_get_mapping(struct sk_buff * skb,struct mwifiex_dma_mapping * mapping)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
MWIFIEX_SKB_DMA_ADDR(struct sk_buff * skb)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
le16_unaligned_add_cpu(__le16 * var,u16 val)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