LXR linux/drivers/staging/rtl8712/rtl8712

   1/******************************************************************************
   2 *
   3 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
   4 *
   5 * This program is free software; you can redistribute it and/or modify it
   6 * under the terms of version 2 of the GNU General Public License as
   7 * published by the Free Software Foundation.
   8 *
   9 * This program is distributed in the hope that it will be useful, but WITHOUT
  10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  12 * more details.
  13 *
  14 * You should have received a copy of the GNU General Public License along with
  15 * this program; if not, write to the Free Software Foundation, Inc.,
  16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17 *
  18 * Modifications for inclusion into the Linux staging tree are
  19 * Copyright(c) 2010 Larry Finger. All rights reserved.
  20 *
  21 * Contact information:
  22 * WLAN FAE <wlanfae@realtek.com>
  23 * Larry Finger <Larry.Finger@lwfinger.net>
  24 *
  25 ******************************************************************************/
  26#ifndef _RTL8712_RECV_H_
  27#define _RTL8712_RECV_H_
  28
  29#include "osdep_service.h"
  30#include "drv_types.h"
  31
  32/* Realtek's v2.6.6 reduced this to 4. However, under heavy network and CPU
  33 * loads, even 8 receive buffers might not be enough; cutting it to 4 seemed
  34 * unwise.
  35 */
  36#define NR_RECVBUFF (8)
  37
  38#define NR_PREALLOC_RECV_SKB (8)
  39#define RXDESC_SIZE     24
  40#define RXDESC_OFFSET RXDESC_SIZE
  41#define RECV_BLK_SZ 512
  42#define RECV_BLK_CNT 16
  43#define RECV_BLK_TH RECV_BLK_CNT
  44#define MAX_RECVBUF_SZ 9100
  45#define RECVBUFF_ALIGN_SZ 512
  46#define RSVD_ROOM_SZ (0)
  47/*These definition is used for Rx packet reordering.*/
  48#define SN_LESS(a, b)           (((a-b) & 0x800) != 0)
  49#define SN_EQUAL(a, b)  (a == b)
  50#define REORDER_WAIT_TIME       30 /* (ms)*/
  51
  52struct recv_stat {
  53        __le32 rxdw0;
  54        __le32 rxdw1;
  55        __le32 rxdw2;
  56        __le32 rxdw3;
  57        __le32 rxdw4;
  58        __le32 rxdw5;
  59};
  60
  61struct phy_cck_rx_status {
  62        /* For CCK rate descriptor. This is a unsigned 8:1 variable.
  63         * LSB bit present 0.5. And MSB 7 bts present a signed value.
  64         * Range from -64~+63.5.
  65         */
  66        u8      adc_pwdb_X[4];
  67        u8      sq_rpt;
  68        u8      cck_agc_rpt;
  69};
  70
  71struct phy_stat {
  72        __le32 phydw0;
  73        __le32 phydw1;
  74        __le32 phydw2;
  75        __le32 phydw3;
  76        __le32 phydw4;
  77        __le32 phydw5;
  78        __le32 phydw6;
  79        __le32 phydw7;
  80};
  81#define PHY_STAT_GAIN_TRSW_SHT 0
  82#define PHY_STAT_PWDB_ALL_SHT 4
  83#define PHY_STAT_CFOSHO_SHT 5
  84#define PHY_STAT_CCK_AGC_RPT_SHT 5
  85#define PHY_STAT_CFOTAIL_SHT 9
  86#define PHY_STAT_RXEVM_SHT 13
  87#define PHY_STAT_RXSNR_SHT 15
  88#define PHY_STAT_PDSNR_SHT 19
  89#define PHY_STAT_CSI_CURRENT_SHT 21
  90#define PHY_STAT_CSI_TARGET_SHT 23
  91#define PHY_STAT_SIGEVM_SHT 25
  92#define PHY_STAT_MAX_EX_PWR_SHT 26
  93
  94union recvstat {
  95        struct recv_stat recv_stat;
  96        unsigned int value[RXDESC_SIZE>>2];
  97};
  98
  99
 100struct recv_buf {
 101        struct list_head list;
 102        spinlock_t recvbuf_lock;
 103        u32     ref_cnt;
 104        struct _adapter  *adapter;
 105        struct urb *purb;
 106        _pkt *pskb;
 107        u8  irp_pending;
 108        u32  transfer_len;
 109        uint  len;
 110        u8 *phead;
 111        u8 *pdata;
 112        u8 *ptail;
 113        u8 *pend;
 114        u8 *pbuf;
 115        u8 *pallocated_buf;
 116};
 117
 118/*
 119 *      head  ----->
 120 *              data  ----->
 121 *                      payload
 122 *              tail  ----->
 123 *      end   ----->
 124 *      len = (unsigned int )(tail - data);
 125 */
 126struct recv_frame_hdr {
 127        struct list_head list;
 128        _pkt    *pkt;
 129        _pkt *pkt_newalloc;
 130        struct _adapter  *adapter;
 131        u8 fragcnt;
 132        struct rx_pkt_attrib attrib;
 133        uint  len;
 134        u8 *rx_head;
 135        u8 *rx_data;
 136        u8 *rx_tail;
 137        u8 *rx_end;
 138        void *precvbuf;
 139        struct sta_info *psta;
 140        /*for A-MPDU Rx reordering buffer control*/
 141        struct recv_reorder_ctrl *preorder_ctrl;
 142};
 143
 144union recv_frame {
 145        union {
 146                struct list_head list;
 147                struct recv_frame_hdr hdr;
 148        } u;
 149};
 150
 151int r8712_init_recvbuf(struct _adapter *padapter, struct recv_buf *precvbuf);
 152void r8712_rxcmd_event_hdl(struct _adapter *padapter, void *prxcmdbuf);
 153s32 r8712_signal_scale_mapping(s32 cur_sig);
 154void r8712_reordering_ctrl_timeout_handler(void *pcontext);
 155
 156#endif
 157
 158