// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
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* All rights reserved.
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*
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* File: desc.h
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*
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* Purpose:The header file of descriptor
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*
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* Revision History:
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*
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* Author: Tevin Chen
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*
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* Date: May 21, 1996
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*
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*/
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#ifndef __DESC_H__
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#define __DESC_H__
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#include <linux/types.h>
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#include <linux/mm.h>
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#include "linux/ieee80211.h"
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#define B_OWNED_BY_CHIP 1
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#define B_OWNED_BY_HOST 0
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/* Bits in the RSR register */
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#define RSR_ADDRBROAD 0x80
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#define RSR_ADDRMULTI 0x40
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#define RSR_ADDRUNI 0x00
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#define RSR_IVLDTYP 0x20
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#define RSR_IVLDLEN 0x10 /* invalid len (> 2312 byte) */
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#define RSR_BSSIDOK 0x08
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#define RSR_CRCOK 0x04
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#define RSR_BCNSSIDOK 0x02
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#define RSR_ADDROK 0x01
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/* Bits in the new RSR register */
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#define NEWRSR_DECRYPTOK 0x10
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#define NEWRSR_CFPIND 0x08
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#define NEWRSR_HWUTSF 0x04
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#define NEWRSR_BCNHITAID 0x02
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#define NEWRSR_BCNHITAID0 0x01
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/* Bits in the TSR0 register */
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#define TSR0_PWRSTS1_2 0xC0
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#define TSR0_PWRSTS7 0x20
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#define TSR0_NCR 0x1F
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/* Bits in the TSR1 register */
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#define TSR1_TERR 0x80
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#define TSR1_PWRSTS4_6 0x70
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#define TSR1_RETRYTMO 0x08
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#define TSR1_TMO 0x04
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#define TSR1_PWRSTS3 0x02
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#define ACK_DATA 0x01
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/* Bits in the TCR register */
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#define EDMSDU 0x04 /* end of sdu */
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#define TCR_EDP 0x02 /* end of packet */
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#define TCR_STP 0x01 /* start of packet */
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/* max transmit or receive buffer size */
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#define CB_MAX_BUF_SIZE 2900U
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/* NOTE: must be multiple of 4 */
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#define CB_MAX_TX_BUF_SIZE CB_MAX_BUF_SIZE
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#define CB_MAX_RX_BUF_SIZE_NORMAL CB_MAX_BUF_SIZE
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#define CB_BEACON_BUF_SIZE 512U
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#define CB_MAX_RX_DESC 128
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#define CB_MIN_RX_DESC 16
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#define CB_MAX_TX_DESC 64
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#define CB_MIN_TX_DESC 16
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#define CB_MAX_RECEIVED_PACKETS 16
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/*
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* limit our receive routine to indicating
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* this many at a time for 2 reasons:
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* 1. driver flow control to protocol layer
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* 2. limit the time used in ISR routine
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*/
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#define CB_EXTRA_RD_NUM 32
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#define CB_RD_NUM 32
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#define CB_TD_NUM 32
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/*
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* max number of physical segments in a single NDIS packet. Above this
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* threshold, the packet is copied into a single physically contiguous buffer
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*/
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#define CB_MAX_SEGMENT 4
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#define CB_MIN_MAP_REG_NUM 4
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#define CB_MAX_MAP_REG_NUM CB_MAX_TX_DESC
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#define CB_PROTOCOL_RESERVED_SECTION 16
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/*
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* if retrys excess 15 times , tx will abort, and if tx fifo underflow,
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* tx will fail, we should try to resend it
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*/
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#define CB_MAX_TX_ABORT_RETRY 3
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/* WMAC definition FIFO Control */
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#define FIFOCTL_AUTO_FB_1 0x1000
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#define FIFOCTL_AUTO_FB_0 0x0800
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#define FIFOCTL_GRPACK 0x0400
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#define FIFOCTL_11GA 0x0300
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#define FIFOCTL_11GB 0x0200
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#define FIFOCTL_11B 0x0100
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#define FIFOCTL_11A 0x0000
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#define FIFOCTL_RTS 0x0080
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#define FIFOCTL_ISDMA0 0x0040
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#define FIFOCTL_GENINT 0x0020
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#define FIFOCTL_TMOEN 0x0010
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#define FIFOCTL_LRETRY 0x0008
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#define FIFOCTL_CRCDIS 0x0004
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#define FIFOCTL_NEEDACK 0x0002
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#define FIFOCTL_LHEAD 0x0001
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/* WMAC definition Frag Control */
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#define FRAGCTL_AES 0x0300
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#define FRAGCTL_TKIP 0x0200
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#define FRAGCTL_LEGACY 0x0100
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#define FRAGCTL_NONENCRYPT 0x0000
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#define FRAGCTL_ENDFRAG 0x0003
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#define FRAGCTL_MIDFRAG 0x0002
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#define FRAGCTL_STAFRAG 0x0001
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#define FRAGCTL_NONFRAG 0x0000
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#define TYPE_TXDMA0 0
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#define TYPE_AC0DMA 1
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#define TYPE_ATIMDMA 2
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#define TYPE_SYNCDMA 3
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#define TYPE_MAXTD 2
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#define TYPE_BEACONDMA 4
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#define TYPE_RXDMA0 0
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#define TYPE_RXDMA1 1
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#define TYPE_MAXRD 2
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/* TD_INFO flags control bit */
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#define TD_FLAGS_NETIF_SKB 0x01 /* check if need release skb */
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/* check if called from private skb (hostap) */
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#define TD_FLAGS_PRIV_SKB 0x02
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#define TD_FLAGS_PS_RETRY 0x04 /* check if PS STA frame re-transmit */
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/*
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* ref_sk_buff is used for mapping the skb structure between pre-built
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* driver-obj & running kernel. Since different kernel version (2.4x) may
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* change skb structure, i.e. pre-built driver-obj may link to older skb that
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* leads error.
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*/
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struct vnt_rd_info {
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struct sk_buff *skb;
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dma_addr_t skb_dma;
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};
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struct vnt_rdes0 {
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volatile __le16 res_count;
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#ifdef __BIG_ENDIAN
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union {
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volatile u16 f15_reserved;
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struct {
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volatile u8 f8_reserved1;
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volatile u8 owner:1;
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volatile u8 f7_reserved:7;
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} __packed;
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} __packed;
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#else
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u16 f15_reserved:15;
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u16 owner:1;
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#endif
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} __packed;
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struct vnt_rdes1 {
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__le16 req_count;
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u16 reserved;
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} __packed;
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/* Rx descriptor*/
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struct vnt_rx_desc {
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volatile struct vnt_rdes0 rd0;
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volatile struct vnt_rdes1 rd1;
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volatile __le32 buff_addr;
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volatile __le32 next_desc;
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struct vnt_rx_desc *next __aligned(8);
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struct vnt_rd_info *rd_info __aligned(8);
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} __packed;
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struct vnt_tdes0 {
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volatile u8 tsr0;
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volatile u8 tsr1;
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#ifdef __BIG_ENDIAN
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union {
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volatile u16 f15_txtime;
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struct {
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volatile u8 f8_reserved;
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volatile u8 owner:1;
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volatile u8 f7_reserved:7;
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} __packed;
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} __packed;
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#else
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volatile u16 f15_txtime:15;
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volatile u16 owner:1;
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#endif
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} __packed;
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struct vnt_tdes1 {
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volatile __le16 req_count;
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volatile u8 tcr;
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volatile u8 reserved;
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} __packed;
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struct vnt_td_info {
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void *mic_hdr;
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struct sk_buff *skb;
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unsigned char *buf;
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dma_addr_t buf_dma;
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u16 req_count;
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u8 flags;
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};
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/* transmit descriptor */
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struct vnt_tx_desc {
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volatile struct vnt_tdes0 td0;
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volatile struct vnt_tdes1 td1;
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volatile __le32 buff_addr;
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volatile __le32 next_desc;
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struct vnt_tx_desc *next __aligned(8);
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struct vnt_td_info *td_info __aligned(8);
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} __packed;
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/* Length, Service, and Signal fields of Phy for Tx */
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struct vnt_phy_field {
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u8 signal;
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u8 service;
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__le16 len;
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} __packed;
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union vnt_phy_field_swap {
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struct vnt_phy_field field_read;
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u16 swap[2];
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u32 field_write;
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};
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#endif /* __DESC_H__ */
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