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/*
* Copyright (c) 2010 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _BRCM_SCB_H_
#define _BRCM_SCB_H_
#include <linux/if_ether.h>
#include <brcmu_utils.h>
#include <defs.h>
#include "types.h"
#define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */
#define AMPDU_MAX_SCB_TID NUMPRIO
/* scb flags */
#define SCB_WMECAP 0x0040
#define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */
#define SCB_IS40 0x80000 /* 40MHz capable */
#define SCB_STBCCAP 0x40000000 /* STBC Capable */
#define SCB_MAGIC 0xbeefcafe
/* structure to store per-tid state for the ampdu initiator */
struct scb_ampdu_tid_ini {
u8 tx_in_transit; /* number of pending mpdus in transit in driver */
u8 tid; /* initiator tid for easy lookup */
/* tx retry count; indexed by seq modulo */
u8 txretry[AMPDU_TX_BA_MAX_WSIZE];
struct scb *scb; /* backptr for easy lookup */
u8 ba_wsize; /* negotiated ba window size (in pdu) */
};
struct scb_ampdu {
struct scb *scb; /* back pointer for easy reference */
u8 mpdu_density; /* mpdu density */
u8 max_pdu; /* max pdus allowed in ampdu */
u8 release; /* # of mpdus released at a time */
u16 min_len; /* min mpdu len to support the density */
u32 max_rx_ampdu_bytes; /* max ampdu rcv length; 8k, 16k, 32k, 64k */
/*
* This could easily be a ini[] pointer and we keep this info in wl
* itself instead of having mac80211 hold it for us. Also could be made
* dynamic per tid instead of static.
*/
/* initiator info - per tid (NUMPRIO): */
struct scb_ampdu_tid_ini ini[AMPDU_MAX_SCB_TID];
};
/* station control block - one per remote MAC address */
struct scb {
u32 magic;
u32 flags; /* various bit flags as defined below */
u32 flags2; /* various bit flags2 as defined below */
u8 state; /* current state bitfield of auth/assoc process */
u8 ea[ETH_ALEN]; /* station address */
uint fragresid[NUMPRIO];/* #bytes unused in frag buffer per prio */
u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */
/* seqctl of last received frame (for dups) for non-QoS data and
* management */
u16 seqctl_nonqos;
u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */
struct scb_ampdu scb_ampdu; /* AMPDU state including per tid info */
};
#endif /* _BRCM_SCB_H_ */
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