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/*
* Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* File: desc.h
*
* Purpose:The header file of descriptor
*
* Revision History:
*
* Author: Tevin Chen
*
* Date: May 21, 1996
*
*/
#ifndef __DESC_H__
#define __DESC_H__
#include <linux/types.h>
#include <linux/mm.h>
#include "linux/ieee80211.h"
#define B_OWNED_BY_CHIP 1
#define B_OWNED_BY_HOST 0
/* Bits in the RSR register */
#define RSR_ADDRBROAD 0x80
#define RSR_ADDRMULTI 0x40
#define RSR_ADDRUNI 0x00
#define RSR_IVLDTYP 0x20
#define RSR_IVLDLEN 0x10 /* invalid len (> 2312 byte) */
#define RSR_BSSIDOK 0x08
#define RSR_CRCOK 0x04
#define RSR_BCNSSIDOK 0x02
#define RSR_ADDROK 0x01
/* Bits in the new RSR register */
#define NEWRSR_DECRYPTOK 0x10
#define NEWRSR_CFPIND 0x08
#define NEWRSR_HWUTSF 0x04
#define NEWRSR_BCNHITAID 0x02
#define NEWRSR_BCNHITAID0 0x01
/* Bits in the TSR0 register */
#define TSR0_PWRSTS1_2 0xC0
#define TSR0_PWRSTS7 0x20
#define TSR0_NCR 0x1F
/* Bits in the TSR1 register */
#define TSR1_TERR 0x80
#define TSR1_PWRSTS4_6 0x70
#define TSR1_RETRYTMO 0x08
#define TSR1_TMO 0x04
#define TSR1_PWRSTS3 0x02
#define ACK_DATA 0x01
/* Bits in the TCR register */
#define EDMSDU 0x04 /* end of sdu */
#define TCR_EDP 0x02 /* end of packet */
#define TCR_STP 0x01 /* start of packet */
/* max transmit or receive buffer size */
#define CB_MAX_BUF_SIZE 2900U
/* NOTE: must be multiple of 4 */
#define CB_MAX_TX_BUF_SIZE CB_MAX_BUF_SIZE
#define CB_MAX_RX_BUF_SIZE_NORMAL CB_MAX_BUF_SIZE
#define CB_BEACON_BUF_SIZE 512U
#define CB_MAX_RX_DESC 128
#define CB_MIN_RX_DESC 16
#define CB_MAX_TX_DESC 64
#define CB_MIN_TX_DESC 16
#define CB_MAX_RECEIVED_PACKETS 16
/*
* limit our receive routine to indicating
* this many at a time for 2 reasons:
* 1. driver flow control to protocol layer
* 2. limit the time used in ISR routine
*/
#define CB_EXTRA_RD_NUM 32
#define CB_RD_NUM 32
#define CB_TD_NUM 32
/*
* max number of physical segments in a single NDIS packet. Above this
* threshold, the packet is copied into a single physically contiguous buffer
*/
#define CB_MAX_SEGMENT 4
#define CB_MIN_MAP_REG_NUM 4
#define CB_MAX_MAP_REG_NUM CB_MAX_TX_DESC
#define CB_PROTOCOL_RESERVED_SECTION 16
/*
* if retrys excess 15 times , tx will abort, and if tx fifo underflow,
* tx will fail, we should try to resend it
*/
#define CB_MAX_TX_ABORT_RETRY 3
/* WMAC definition FIFO Control */
#define FIFOCTL_AUTO_FB_1 0x1000
#define FIFOCTL_AUTO_FB_0 0x0800
#define FIFOCTL_GRPACK 0x0400
#define FIFOCTL_11GA 0x0300
#define FIFOCTL_11GB 0x0200
#define FIFOCTL_11B 0x0100
#define FIFOCTL_11A 0x0000
#define FIFOCTL_RTS 0x0080
#define FIFOCTL_ISDMA0 0x0040
#define FIFOCTL_GENINT 0x0020
#define FIFOCTL_TMOEN 0x0010
#define FIFOCTL_LRETRY 0x0008
#define FIFOCTL_CRCDIS 0x0004
#define FIFOCTL_NEEDACK 0x0002
#define FIFOCTL_LHEAD 0x0001
/* WMAC definition Frag Control */
#define FRAGCTL_AES 0x0300
#define FRAGCTL_TKIP 0x0200
#define FRAGCTL_LEGACY 0x0100
#define FRAGCTL_NONENCRYPT 0x0000
#define FRAGCTL_ENDFRAG 0x0003
#define FRAGCTL_MIDFRAG 0x0002
#define FRAGCTL_STAFRAG 0x0001
#define FRAGCTL_NONFRAG 0x0000
#define TYPE_TXDMA0 0
#define TYPE_AC0DMA 1
#define TYPE_ATIMDMA 2
#define TYPE_SYNCDMA 3
#define TYPE_MAXTD 2
#define TYPE_BEACONDMA 4
#define TYPE_RXDMA0 0
#define TYPE_RXDMA1 1
#define TYPE_MAXRD 2
/* TD_INFO flags control bit */
#define TD_FLAGS_NETIF_SKB 0x01 /* check if need release skb */
/* check if called from private skb (hostap) */
#define TD_FLAGS_PRIV_SKB 0x02
#define TD_FLAGS_PS_RETRY 0x04 /* check if PS STA frame re-transmit */
/*
* ref_sk_buff is used for mapping the skb structure between pre-built
* driver-obj & running kernel. Since different kernel version (2.4x) may
* change skb structure, i.e. pre-built driver-obj may link to older skb that
* leads error.
*/
struct vnt_rd_info {
struct sk_buff *skb;
dma_addr_t skb_dma;
};
struct vnt_rdes0 {
volatile __le16 res_count;
#ifdef __BIG_ENDIAN
union {
volatile u16 f15_reserved;
struct {
volatile u8 f8_reserved1;
volatile u8 owner:1;
volatile u8 f7_reserved:7;
} __packed;
} __packed;
#else
u16 f15_reserved:15;
u16 owner:1;
#endif
} __packed;
struct vnt_rdes1 {
__le16 req_count;
u16 reserved;
} __packed;
/* Rx descriptor*/
struct vnt_rx_desc {
volatile struct vnt_rdes0 rd0;
volatile struct vnt_rdes1 rd1;
volatile __le32 buff_addr;
volatile __le32 next_desc;
struct vnt_rx_desc *next __aligned(8);
struct vnt_rd_info *rd_info __aligned(8);
} __packed;
struct vnt_tdes0 {
volatile u8 tsr0;
volatile u8 tsr1;
#ifdef __BIG_ENDIAN
union {
volatile u16 f15_txtime;
struct {
volatile u8 f8_reserved;
volatile u8 owner:1;
volatile u8 f7_reserved:7;
} __packed;
} __packed;
#else
volatile u16 f15_txtime:15;
volatile u16 owner:1;
#endif
} __packed;
struct vnt_tdes1 {
volatile __le16 req_count;
volatile u8 tcr;
volatile u8 reserved;
} __packed;
struct vnt_td_info {
void *mic_hdr;
struct sk_buff *skb;
unsigned char *buf;
dma_addr_t buf_dma;
u16 req_count;
u8 flags;
};
/* transmit descriptor */
struct vnt_tx_desc {
volatile struct vnt_tdes0 td0;
volatile struct vnt_tdes1 td1;
volatile __le32 buff_addr;
volatile __le32 next_desc;
struct vnt_tx_desc *next __aligned(8);
struct vnt_td_info *td_info __aligned(8);
} __packed;
/* Length, Service, and Signal fields of Phy for Tx */
struct vnt_phy_field {
u8 signal;
u8 service;
__le16 len;
} __packed;
union vnt_phy_field_swap {
struct vnt_phy_field field_read;
u16 swap[2];
u32 field_write;
};
#endif /* __DESC_H__ */
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