1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * Copyright (c) 2010 Broadcom Corporation 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Permission to use, copy, modify, and/or distribute this software for any 5*4882a593Smuzhiyun * purpose with or without fee is hereby granted, provided that the above 6*4882a593Smuzhiyun * copyright notice and this permission notice appear in all copies. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9*4882a593Smuzhiyun * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10*4882a593Smuzhiyun * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 11*4882a593Smuzhiyun * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12*4882a593Smuzhiyun * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 13*4882a593Smuzhiyun * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 14*4882a593Smuzhiyun * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15*4882a593Smuzhiyun */ 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun #ifndef _BRCM_SCB_H_ 18*4882a593Smuzhiyun #define _BRCM_SCB_H_ 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun #include <linux/if_ether.h> 21*4882a593Smuzhiyun #include <brcmu_utils.h> 22*4882a593Smuzhiyun #include <defs.h> 23*4882a593Smuzhiyun #include "types.h" 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun #define AMPDU_TX_BA_MAX_WSIZE 64 /* max Tx ba window size (in pdu) */ 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define AMPDU_MAX_SCB_TID NUMPRIO 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun /* scb flags */ 30*4882a593Smuzhiyun #define SCB_WMECAP 0x0040 31*4882a593Smuzhiyun #define SCB_HTCAP 0x10000 /* HT (MIMO) capable device */ 32*4882a593Smuzhiyun #define SCB_IS40 0x80000 /* 40MHz capable */ 33*4882a593Smuzhiyun #define SCB_STBCCAP 0x40000000 /* STBC Capable */ 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #define SCB_MAGIC 0xbeefcafe 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* structure to store per-tid state for the ampdu initiator */ 38*4882a593Smuzhiyun struct scb_ampdu_tid_ini { 39*4882a593Smuzhiyun u8 tid; /* initiator tid for easy lookup */ 40*4882a593Smuzhiyun /* tx retry count; indexed by seq modulo */ 41*4882a593Smuzhiyun u8 txretry[AMPDU_TX_BA_MAX_WSIZE]; 42*4882a593Smuzhiyun struct scb *scb; /* backptr for easy lookup */ 43*4882a593Smuzhiyun u8 ba_wsize; /* negotiated ba window size (in pdu) */ 44*4882a593Smuzhiyun }; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun struct scb_ampdu { 47*4882a593Smuzhiyun struct scb *scb; /* back pointer for easy reference */ 48*4882a593Smuzhiyun u8 mpdu_density; /* mpdu density */ 49*4882a593Smuzhiyun u8 max_pdu; /* max pdus allowed in ampdu */ 50*4882a593Smuzhiyun u8 release; /* # of mpdus released at a time */ 51*4882a593Smuzhiyun u16 min_len; /* min mpdu len to support the density */ 52*4882a593Smuzhiyun u32 max_rx_ampdu_bytes; /* max ampdu rcv length; 8k, 16k, 32k, 64k */ 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun /* 55*4882a593Smuzhiyun * This could easily be a ini[] pointer and we keep this info in wl 56*4882a593Smuzhiyun * itself instead of having mac80211 hold it for us. Also could be made 57*4882a593Smuzhiyun * dynamic per tid instead of static. 58*4882a593Smuzhiyun */ 59*4882a593Smuzhiyun /* initiator info - per tid (NUMPRIO): */ 60*4882a593Smuzhiyun struct scb_ampdu_tid_ini ini[AMPDU_MAX_SCB_TID]; 61*4882a593Smuzhiyun }; 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun /* station control block - one per remote MAC address */ 64*4882a593Smuzhiyun struct scb { 65*4882a593Smuzhiyun u32 magic; 66*4882a593Smuzhiyun u32 flags; /* various bit flags as defined below */ 67*4882a593Smuzhiyun u32 flags2; /* various bit flags2 as defined below */ 68*4882a593Smuzhiyun u8 state; /* current state bitfield of auth/assoc process */ 69*4882a593Smuzhiyun u8 ea[ETH_ALEN]; /* station address */ 70*4882a593Smuzhiyun uint fragresid[NUMPRIO];/* #bytes unused in frag buffer per prio */ 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun u16 seqctl[NUMPRIO]; /* seqctl of last received frame (for dups) */ 73*4882a593Smuzhiyun /* seqctl of last received frame (for dups) for non-QoS data and 74*4882a593Smuzhiyun * management */ 75*4882a593Smuzhiyun u16 seqctl_nonqos; 76*4882a593Smuzhiyun u16 seqnum[NUMPRIO];/* WME: driver maintained sw seqnum per priority */ 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun struct scb_ampdu scb_ampdu; /* AMPDU state including per tid info */ 79*4882a593Smuzhiyun }; 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #endif /* _BRCM_SCB_H_ */ 82