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
11struct mwifiex_private;
12
13struct mwifiex_dma_mapping {
14	dma_addr_t addr;
15	size_t len;
16};
17
18struct 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
34struct 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
41static 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
49static 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
56static 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
64static 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
72static 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
81int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
82				 struct mwifiex_debug_info *info);
83
84static 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_ */