1 /*
2 * Marvell Wireless LAN device driver: utility functions
3 *
4 * Copyright (C) 2011-2014, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
18 */
19
20 #ifndef _MWIFIEX_UTIL_H_
21 #define _MWIFIEX_UTIL_H_
22
23 struct mwifiex_private;
24
25 struct mwifiex_dma_mapping {
26 dma_addr_t addr;
27 size_t len;
28 };
29
30 struct mwifiex_cb {
31 struct mwifiex_dma_mapping dma_mapping;
32 union {
33 struct mwifiex_rxinfo rx_info;
34 struct mwifiex_txinfo tx_info;
35 };
36 };
37
38 /* size/addr for mwifiex_debug_info */
39 #define item_size(n) (FIELD_SIZEOF(struct mwifiex_debug_info, n))
40 #define item_addr(n) (offsetof(struct mwifiex_debug_info, n))
41
42 /* size/addr for struct mwifiex_adapter */
43 #define adapter_item_size(n) (FIELD_SIZEOF(struct mwifiex_adapter, n))
44 #define adapter_item_addr(n) (offsetof(struct mwifiex_adapter, n))
45
46 struct mwifiex_debug_data {
47 char name[32]; /* variable/array name */
48 u32 size; /* size of the variable/array */
49 size_t addr; /* address of the variable/array */
50 int num; /* number of variables in an array */
51 };
52
MWIFIEX_SKB_RXCB(struct sk_buff * skb)53 static inline struct mwifiex_rxinfo *MWIFIEX_SKB_RXCB(struct sk_buff *skb)
54 {
55 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
56
57 BUILD_BUG_ON(sizeof(struct mwifiex_cb) > sizeof(skb->cb));
58 return &cb->rx_info;
59 }
60
MWIFIEX_SKB_TXCB(struct sk_buff * skb)61 static inline struct mwifiex_txinfo *MWIFIEX_SKB_TXCB(struct sk_buff *skb)
62 {
63 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
64
65 return &cb->tx_info;
66 }
67
mwifiex_store_mapping(struct sk_buff * skb,struct mwifiex_dma_mapping * mapping)68 static inline void mwifiex_store_mapping(struct sk_buff *skb,
69 struct mwifiex_dma_mapping *mapping)
70 {
71 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
72
73 memcpy(&cb->dma_mapping, mapping, sizeof(*mapping));
74 }
75
mwifiex_get_mapping(struct sk_buff * skb,struct mwifiex_dma_mapping * mapping)76 static inline void mwifiex_get_mapping(struct sk_buff *skb,
77 struct mwifiex_dma_mapping *mapping)
78 {
79 struct mwifiex_cb *cb = (struct mwifiex_cb *)skb->cb;
80
81 memcpy(mapping, &cb->dma_mapping, sizeof(*mapping));
82 }
83
MWIFIEX_SKB_DMA_ADDR(struct sk_buff * skb)84 static inline dma_addr_t MWIFIEX_SKB_DMA_ADDR(struct sk_buff *skb)
85 {
86 struct mwifiex_dma_mapping mapping;
87
88 mwifiex_get_mapping(skb, &mapping);
89
90 return mapping.addr;
91 }
92
93 int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
94 struct mwifiex_debug_info *info);
95
le16_unaligned_add_cpu(__le16 * var,u16 val)96 static inline void le16_unaligned_add_cpu(__le16 *var, u16 val)
97 {
98 put_unaligned_le16(get_unaligned_le16(var) + val, var);
99 }
100
101 #endif /* !_MWIFIEX_UTIL_H_ */
102
