xref: /linux/drivers/net/wireless/broadcom/brcm80211/brcmsmac/scb.h (revision a1c613ae4c322ddd58d5a8539dbfba2a0380a8c0)
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 	/* tx retry count; indexed by seq modulo */
40 	u8 txretry[AMPDU_TX_BA_MAX_WSIZE];
41 };
42 
43 struct scb_ampdu {
44 	u8 max_pdu;		/* max pdus allowed in ampdu */
45 	u8 release;		/* # of mpdus released at a time */
46 	u32 max_rx_ampdu_bytes;	/* max ampdu rcv length; 8k, 16k, 32k, 64k */
47 
48 	/*
49 	 * This could easily be a ini[] pointer and we keep this info in wl
50 	 * itself instead of having mac80211 hold it for us. Also could be made
51 	 * dynamic per tid instead of static.
52 	 */
53 	/* initiator info - per tid (NUMPRIO): */
54 	struct scb_ampdu_tid_ini ini[AMPDU_MAX_SCB_TID];
55 };
56 
57 /* station control block - one per remote MAC address */
58 struct scb {
59 	u32 magic;
60 	u32 flags;	/* various bit flags as defined below */
61 	u16 seqctl[NUMPRIO];	/* seqctl of last received frame (for dups) */
62 	u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */
63 
64 	struct scb_ampdu scb_ampdu;	/* AMPDU state including per tid info */
65 };
66 
67 #endif				/* _BRCM_SCB_H_ */
68