drivers/staging/vt6655/desc.h

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * File: desc.h
  16  *
  17  * Purpose:The header file of descriptor
  18  *
  19  * Revision History:
  20  *
  21  * Author: Tevin Chen
  22  *
  23  * Date: May 21, 1996
  24  *
  25  */
  26
  27 #ifndef __DESC_H__
  28 #define __DESC_H__
  29
  30 #include <linux/types.h>
  31 #include <linux/mm.h>
  32 #include "linux/ieee80211.h"
  33
  34 #define B_OWNED_BY_CHIP     1
  35 #define B_OWNED_BY_HOST     0
  36
  37 /* Bits in the RSR register */
  38 #define RSR_ADDRBROAD       0x80
  39 #define RSR_ADDRMULTI       0x40
  40 #define RSR_ADDRUNI         0x00
  41 #define RSR_IVLDTYP         0x20
  42 #define RSR_IVLDLEN         0x10        /* invalid len (> 2312 byte) */
  43 #define RSR_BSSIDOK         0x08
  44 #define RSR_CRCOK           0x04
  45 #define RSR_BCNSSIDOK       0x02
  46 #define RSR_ADDROK          0x01
  47
  48 /* Bits in the new RSR register */
  49 #define NEWRSR_DECRYPTOK    0x10
  50 #define NEWRSR_CFPIND       0x08
  51 #define NEWRSR_HWUTSF       0x04
  52 #define NEWRSR_BCNHITAID    0x02
  53 #define NEWRSR_BCNHITAID0   0x01
  54
  55 /* Bits in the TSR0 register */
  56 #define TSR0_PWRSTS1_2      0xC0
  57 #define TSR0_PWRSTS7        0x20
  58 #define TSR0_NCR            0x1F
  59
  60 /* Bits in the TSR1 register */
  61 #define TSR1_TERR           0x80
  62 #define TSR1_PWRSTS4_6      0x70
  63 #define TSR1_RETRYTMO       0x08
  64 #define TSR1_TMO            0x04
  65 #define TSR1_PWRSTS3        0x02
  66 #define ACK_DATA            0x01
  67
  68 /* Bits in the TCR register */
  69 #define EDMSDU              0x04        /* end of sdu */
  70 #define TCR_EDP             0x02        /* end of packet */
  71 #define TCR_STP             0x01        /* start of packet */
  72
  73 /* max transmit or receive buffer size */
  74 #define CB_MAX_BUF_SIZE     2900U
  75                                         /* NOTE: must be multiple of 4 */
  76 #define CB_MAX_TX_BUF_SIZE          CB_MAX_BUF_SIZE
  77 #define CB_MAX_RX_BUF_SIZE_NORMAL   CB_MAX_BUF_SIZE
  78
  79 #define CB_BEACON_BUF_SIZE  512U
  80
  81 #define CB_MAX_RX_DESC      128
  82 #define CB_MIN_RX_DESC      16
  83 #define CB_MAX_TX_DESC      64
  84 #define CB_MIN_TX_DESC      16
  85
  86 #define CB_MAX_RECEIVED_PACKETS     16
  87                                 /*
  88                                  * limit our receive routine to indicating
  89                                  * this many at a time for 2 reasons:
  90                                  * 1. driver flow control to protocol layer
  91                                  * 2. limit the time used in ISR routine
  92                                  */
  93
  94 #define CB_EXTRA_RD_NUM     32
  95 #define CB_RD_NUM           32
  96 #define CB_TD_NUM           32
  97
  98 /*
  99  * max number of physical segments in a single NDIS packet. Above this
 100  * threshold, the packet is copied into a single physically contiguous buffer
 101  */
 102 #define CB_MAX_SEGMENT      4
 103
 104 #define CB_MIN_MAP_REG_NUM  4
 105 #define CB_MAX_MAP_REG_NUM  CB_MAX_TX_DESC
 106
 107 #define CB_PROTOCOL_RESERVED_SECTION    16
 108
 109 /*
 110  * if retrys excess 15 times , tx will abort, and if tx fifo underflow,
 111  * tx will fail, we should try to resend it
 112  */
 113 #define CB_MAX_TX_ABORT_RETRY   3
 114
 115 /* WMAC definition FIFO Control */
 116 #define FIFOCTL_AUTO_FB_1   0x1000
 117 #define FIFOCTL_AUTO_FB_0   0x0800
 118 #define FIFOCTL_GRPACK      0x0400
 119 #define FIFOCTL_11GA        0x0300
 120 #define FIFOCTL_11GB        0x0200
 121 #define FIFOCTL_11B         0x0100
 122 #define FIFOCTL_11A         0x0000
 123 #define FIFOCTL_RTS         0x0080
 124 #define FIFOCTL_ISDMA0      0x0040
 125 #define FIFOCTL_GENINT      0x0020
 126 #define FIFOCTL_TMOEN       0x0010
 127 #define FIFOCTL_LRETRY      0x0008
 128 #define FIFOCTL_CRCDIS      0x0004
 129 #define FIFOCTL_NEEDACK     0x0002
 130 #define FIFOCTL_LHEAD       0x0001
 131
 132 /* WMAC definition Frag Control */
 133 #define FRAGCTL_AES         0x0300
 134 #define FRAGCTL_TKIP        0x0200
 135 #define FRAGCTL_LEGACY      0x0100
 136 #define FRAGCTL_NONENCRYPT  0x0000
 137 #define FRAGCTL_ENDFRAG     0x0003
 138 #define FRAGCTL_MIDFRAG     0x0002
 139 #define FRAGCTL_STAFRAG     0x0001
 140 #define FRAGCTL_NONFRAG     0x0000
 141
 142 #define TYPE_TXDMA0     0
 143 #define TYPE_AC0DMA     1
 144 #define TYPE_ATIMDMA    2
 145 #define TYPE_SYNCDMA    3
 146 #define TYPE_MAXTD      2
 147
 148 #define TYPE_BEACONDMA  4
 149
 150 #define TYPE_RXDMA0     0
 151 #define TYPE_RXDMA1     1
 152 #define TYPE_MAXRD      2
 153
 154 /* TD_INFO flags control bit */
 155 #define TD_FLAGS_NETIF_SKB      0x01    /* check if need release skb */
 156 /* check if called from private skb (hostap) */
 157 #define TD_FLAGS_PRIV_SKB       0x02
 158 #define TD_FLAGS_PS_RETRY       0x04    /* check if PS STA frame re-transmit */
 159
 160 /*
 161  * ref_sk_buff is used for mapping the skb structure between pre-built
 162  * driver-obj & running kernel. Since different kernel version (2.4x) may
 163  * change skb structure, i.e. pre-built driver-obj may link to older skb that
 164  * leads error.
 165  */
 166
 167 struct vnt_rd_info {
 168         struct sk_buff *skb;
 169         dma_addr_t  skb_dma;
 170 };
 171
 172 struct vnt_rdes0 {
 173         volatile __le16 res_count;
 174 #ifdef __BIG_ENDIAN
 175         union {
 176                 volatile u16 f15_reserved;
 177                 struct {
 178                         volatile u8 f8_reserved1;
 179                         volatile u8 owner:1;
 180                         volatile u8 f7_reserved:7;
 181                 } __packed;
 182         } __packed;
 183 #else
 184         u16 f15_reserved:15;
 185         u16 owner:1;
 186 #endif
 187 } __packed;
 188
 189 struct vnt_rdes1 {
 190         __le16 req_count;
 191         u16 reserved;
 192 } __packed;
 193
 194 /* Rx descriptor*/
 195 struct vnt_rx_desc {
 196         volatile struct vnt_rdes0 rd0;
 197         volatile struct vnt_rdes1 rd1;
 198         volatile __le32 buff_addr;
 199         volatile __le32 next_desc;
 200         struct vnt_rx_desc *next __aligned(8);
 201         struct vnt_rd_info *rd_info __aligned(8);
 202 } __packed;
 203
 204 struct vnt_tdes0 {
 205         volatile u8 tsr0;
 206         volatile u8 tsr1;
 207 #ifdef __BIG_ENDIAN
 208         union {
 209                 volatile u16 f15_txtime;
 210                 struct {
 211                         volatile u8 f8_reserved;
 212                         volatile u8 owner:1;
 213                         volatile u8 f7_reserved:7;
 214                 } __packed;
 215         } __packed;
 216 #else
 217         volatile u16 f15_txtime:15;
 218         volatile u16 owner:1;
 219 #endif
 220 } __packed;
 221
 222 struct vnt_tdes1 {
 223         volatile __le16 req_count;
 224         volatile u8 tcr;
 225         volatile u8 reserved;
 226 } __packed;
 227
 228 struct vnt_td_info {
 229         void *mic_hdr;
 230         struct sk_buff *skb;
 231         unsigned char *buf;
 232         dma_addr_t buf_dma;
 233         u16 req_count;
 234         u8 flags;
 235 };
 236
 237 /* transmit descriptor */
 238 struct vnt_tx_desc {
 239         volatile struct vnt_tdes0 td0;
 240         volatile struct vnt_tdes1 td1;
 241         volatile __le32 buff_addr;
 242         volatile __le32 next_desc;
 243         struct vnt_tx_desc *next __aligned(8);
 244         struct vnt_td_info *td_info __aligned(8);
 245 } __packed;
 246
 247 /* Length, Service, and Signal fields of Phy for Tx */
 248 struct vnt_phy_field {
 249         u8 signal;
 250         u8 service;
 251         __le16 len;
 252 } __packed;
 253
 254 union vnt_phy_field_swap {
 255         struct vnt_phy_field field_read;
 256         u16 swap[2];
 257         u32 field_write;
 258 };
 259
 260 #endif /* __DESC_H__ */