drivers/staging/rtl8712/rtl8712_recv.h

   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 (30720) /* 30K */
  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
  52 struct recv_stat {
  53         unsigned int rxdw0;
  54         unsigned int rxdw1;
  55         unsigned int rxdw2;
  56         unsigned int rxdw3;
  57         unsigned int rxdw4;
  58         unsigned int rxdw5;
  59 };
  60
  61 struct 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         u8      adc_pwdb_X[4];
  66         u8      sq_rpt;
  67         u8      cck_agc_rpt;
  68 };
  69
  70 struct phy_stat {
  71         unsigned int phydw0;
  72         unsigned int phydw1;
  73         unsigned int phydw2;
  74         unsigned int phydw3;
  75         unsigned int phydw4;
  76         unsigned int phydw5;
  77         unsigned int phydw6;
  78         unsigned int phydw7;
  79 };
  80 #define PHY_STAT_GAIN_TRSW_SHT 0
  81 #define PHY_STAT_PWDB_ALL_SHT 4
  82 #define PHY_STAT_CFOSHO_SHT 5
  83 #define PHY_STAT_CCK_AGC_RPT_SHT 5
  84 #define PHY_STAT_CFOTAIL_SHT 9
  85 #define PHY_STAT_RXEVM_SHT 13
  86 #define PHY_STAT_RXSNR_SHT 15
  87 #define PHY_STAT_PDSNR_SHT 19
  88 #define PHY_STAT_CSI_CURRENT_SHT 21
  89 #define PHY_STAT_CSI_TARGET_SHT 23
  90 #define PHY_STAT_SIGEVM_SHT 25
  91 #define PHY_STAT_MAX_EX_PWR_SHT 26
  92
  93 union recvstat {
  94         struct recv_stat recv_stat;
  95         unsigned int value[RXDESC_SIZE>>2];
  96 };
  97
  98
  99 struct recv_buf {
 100         struct list_head list;
 101         spinlock_t recvbuf_lock;
 102         u32     ref_cnt;
 103         struct _adapter  *adapter;
 104         struct urb *purb;
 105         _pkt *pskb;
 106         u8 reuse;
 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 */
 126 struct 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
 144 union recv_frame {
 145         union {
 146                 struct list_head list;
 147                 struct recv_frame_hdr hdr;
 148         } u;
 149 };
 150
 151 int r8712_init_recvbuf(struct _adapter *padapter, struct recv_buf *precvbuf);
 152 void r8712_rxcmd_event_hdl(struct _adapter *padapter, void *prxcmdbuf);
 153 s32 r8712_signal_scale_mapping(s32 cur_sig);
 154 void r8712_reordering_ctrl_timeout_handler(void *pcontext);
 155
 156 #endif
 157