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 */
38struct scb_ampdu_tid_ini {
39	/* tx retry count; indexed by seq modulo */
40	u8 txretry[AMPDU_TX_BA_MAX_WSIZE];
41};
42
43struct 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 */
58struct 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