2 * Copyright (c) 2009 Atheros Communications Inc.
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <net/mac80211.h>
24 /* Common header for Atheros 802.11n base driver cores */
26 #define WME_NUM_TID 16
27 #define WME_BA_BMP_SIZE 64
28 #define WME_MAX_BA WME_BA_BMP_SIZE
29 #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA)
37 #define ATH_RSSI_DUMMY_MARKER 0x127
38 #define ATH_RSSI_LPF_LEN 10
39 #define RSSI_LPF_THRESHOLD -20
40 #define ATH_RSSI_EP_MULTIPLIER (1<<7)
41 #define ATH_EP_MUL(x, mul) ((x) * (mul))
42 #define ATH_RSSI_IN(x) (ATH_EP_MUL((x), ATH_RSSI_EP_MULTIPLIER))
43 #define ATH_LPF_RSSI(x, y, len) \
44 ((x != ATH_RSSI_DUMMY_MARKER) ? (((x) * ((len) - 1) + (y)) / (len)) : (y))
45 #define ATH_RSSI_LPF(x, y) do { \
46 if ((y) >= RSSI_LPF_THRESHOLD) \
47 x = ATH_LPF_RSSI((x), ATH_RSSI_IN((y)), ATH_RSSI_LPF_LEN); \
49 #define ATH_EP_RND(x, mul) \
50 ((((x)%(mul)) >= ((mul)/2)) ? ((x) + ((mul) - 1)) / (mul) : (x)/(mul))
55 struct list_head list
;
56 struct list_head tid_q
;
59 struct ath_buf_state
{
68 enum ath9k_key_type bfs_keytype
;
72 struct list_head list
;
73 struct ath_buf
*bf_lastbf
; /* last buf of this unit (a frame or
75 struct ath_buf
*bf_next
; /* next subframe in the aggregate */
76 struct sk_buff
*bf_mpdu
; /* enclosing frame structure */
77 struct ath_desc
*bf_desc
; /* virtual addr of desc */
78 dma_addr_t bf_daddr
; /* physical addr of desc */
79 dma_addr_t bf_buf_addr
; /* physical addr of data buffer */
83 struct ath_buf_state bf_state
;
84 dma_addr_t bf_dmacontext
;
85 struct ath_wiphy
*aphy
;
89 struct list_head list
;
90 struct list_head buf_q
;
92 struct ath_atx_ac
*ac
;
93 struct ath_buf
*tx_buf
[ATH_TID_MAX_BUFS
];
98 int baw_head
; /* first un-acked tx buffer */
99 int baw_tail
; /* next unused tx buffer slot */
106 struct ath_common
*common
;
107 struct ath_atx_tid tid
[WME_NUM_TID
];
108 struct ath_atx_ac ac
[WME_NUM_AC
];
114 int ath9k_cmn_rx_skb_preprocess(struct ath_common
*common
,
115 struct ieee80211_hw
*hw
,
117 struct ath_rx_status
*rx_stats
,
118 struct ieee80211_rx_status
*rx_status
,
119 bool *decrypt_error
);
121 void ath9k_cmn_rx_skb_postprocess(struct ath_common
*common
,
123 struct ath_rx_status
*rx_stats
,
124 struct ieee80211_rx_status
*rxs
,
127 int ath9k_cmn_padpos(__le16 frame_control
);