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5b435de0 AS |
1 | /* |
2 | * Copyright (c) 2010 Broadcom Corporation | |
3 | * | |
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. | |
7 | * | |
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 ANY | |
11 | * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION | |
13 | * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN | |
14 | * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
15 | */ | |
16 | ||
17 | #ifndef _BRCM_SCB_H_ | |
18 | #define _BRCM_SCB_H_ | |
19 | ||
20 | #include <linux/if_ether.h> | |
21 | #include <brcmu_utils.h> | |
22 | #include <defs.h> | |
23 | #include "types.h" | |
24 | ||
25 | #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ | |
26 | ||
27 | #define AMPDU_MAX_SCB_TID NUMPRIO | |
28 | ||
29 | /* scb flags */ | |
30 | #define SCB_WMECAP 0x0040 | |
31 | #define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */ | |
32 | #define SCB_IS40 0x80000 /* 40MHz capable */ | |
33 | #define SCB_STBCCAP 0x40000000 /* STBC Capable */ | |
34 | ||
35 | #define SCB_MAGIC 0xbeefcafe | |
36 | ||
37 | /* structure to store per-tid state for the ampdu initiator */ | |
38 | struct scb_ampdu_tid_ini { | |
39 | u8 tx_in_transit; /* number of pending mpdus in transit in driver */ | |
40 | u8 tid; /* initiator tid for easy lookup */ | |
41 | /* tx retry count; indexed by seq modulo */ | |
42 | u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; | |
43 | struct scb *scb; /* backptr for easy lookup */ | |
44 | u8 ba_wsize; /* negotiated ba window size (in pdu) */ | |
45 | }; | |
46 | ||
47 | struct scb_ampdu { | |
48 | struct scb *scb; /* back pointer for easy reference */ | |
49 | u8 mpdu_density; /* mpdu density */ | |
50 | u8 max_pdu; /* max pdus allowed in ampdu */ | |
51 | u8 release; /* # of mpdus released at a time */ | |
52 | u16 min_len; /* min mpdu len to support the density */ | |
53 | u32 max_rx_ampdu_bytes; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ | |
54 | ||
55 | /* | |
56 | * This could easily be a ini[] pointer and we keep this info in wl | |
57 | * itself instead of having mac80211 hold it for us. Also could be made | |
58 | * dynamic per tid instead of static. | |
59 | */ | |
60 | /* initiator info - per tid (NUMPRIO): */ | |
61 | struct scb_ampdu_tid_ini ini[AMPDU_MAX_SCB_TID]; | |
62 | }; | |
63 | ||
64 | /* station control block - one per remote MAC address */ | |
65 | struct scb { | |
66 | u32 magic; | |
67 | u32 flags; /* various bit flags as defined below */ | |
68 | u32 flags2; /* various bit flags2 as defined below */ | |
69 | u8 state; /* current state bitfield of auth/assoc process */ | |
70 | u8 ea[ETH_ALEN]; /* station address */ | |
71 | uint fragresid[NUMPRIO];/* #bytes unused in frag buffer per prio */ | |
72 | ||
73 | u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */ | |
74 | /* seqctl of last received frame (for dups) for non-QoS data and | |
75 | * management */ | |
76 | u16 seqctl_nonqos; | |
77 | u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */ | |
78 | ||
79 | struct scb_ampdu scb_ampdu; /* AMPDU state including per tid info */ | |
80 | }; | |
81 | ||
82 | #endif /* _BRCM_SCB_H_ */ |