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 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 157 158