/* SPDX-License-Identifier: GPL-2.0 */
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/******************************************************************************
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*
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* Copyright (C) 2020 SeekWave Technology Co.,Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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******************************************************************************/
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#ifndef __SKW_TX_H__
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#define __SKW_TX_H__
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#include <linux/virtio_ring.h>
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#include "skw_platform_data.h"
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/* used for tx descriptor */
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#define SKW_ETHER_FRAME 0
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#define SKW_80211_FRAME 1
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#define SKW_SNAP_HDR_LEN 8
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#define SKW_TXQ_HIGH_THRESHOLD 768
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#define SKW_TXQ_LOW_THRESHOLD 512
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#define SKW_TX_WAIT_TIME 1000000
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#define SKW_TX_VRING_SIZE 128
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struct skw_tx_vring {
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struct page *page;
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int tx_bytes;
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struct vring vr;
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void *queue_mem; // 新增：记录vring内存块指针
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struct scatterlist *sgl_dat;
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spinlock_t lock;
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atomic_t set, write;
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};
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enum SKW_TX_RUNNING_STATE {
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SKW_TX_RUNNING_EXIT,
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SKW_TX_RUNNING_RESTART,
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SKW_TX_RUNNING_GO,
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};
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struct skw_tx_desc_hdr {
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/* pading bytes for gap */
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u16 padding_gap:2;
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u16 inst:2;
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u16 tid:4;
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u16 peer_lut:5;
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/* frame_type:
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* 0: ethernet frame
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* 1: 80211 frame
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*/
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u16 frame_type:1;
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u16 encry_dis:1;
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/* rate: 0: auto, 1: sw config */
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u16 rate:1;
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u16 msdu_len:12;
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u16 lmac_id:2;
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u16 rsv:2;
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u16 eth_type;
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/* pading for address align */
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u8 gap[0];
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} __packed;
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struct skw_tx_desc_conf {
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u16 l4_hdr_offset:10;
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u16 csum:1;
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/* ip_prot: 0: UDP, 1: TCP */
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u16 ip_prot:1;
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u16 rsv:4;
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} __packed;
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struct skw_tx_cb {
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u8 ret:1;
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u8 recycle:1;
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u8 lmac_id;
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u8 peer_idx;
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u8 tx_retry;
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u16 skb_native_len;
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dma_addr_t skb_data_pa;
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struct skw_edma_elem e;
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};
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static inline void
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skw_set_tx_desc_eth_type(struct skw_tx_desc_hdr *desc_hdr, u16 proto)
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{
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desc_hdr->eth_type = proto;
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}
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static inline int skw_tx_allowed(unsigned long flags)
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{
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unsigned long mask = BIT(SKW_FLAG_FW_ASSERT) |
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BIT(SKW_FLAG_BLOCK_TX) |
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BIT(SKW_FLAG_MP_MODE) |
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BIT(SKW_FLAG_FW_THERMAL) |
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BIT(SKW_FLAG_FW_MAC_RECOVERY);
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return !(mask & flags);
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}
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static inline int skw_cmd_tx_allowed(unsigned long flags)
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{
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clear_bit(SKW_FLAG_FW_THERMAL, &flags);
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return skw_tx_allowed(flags);
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}
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#ifdef CONFIG_SWT6621S_SKB_RECYCLE
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void skw_recycle_skb_free(struct skw_core *skw, struct sk_buff *skb);
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int skw_recycle_skb_copy(struct skw_core *skw, struct sk_buff *skb_recycle, struct sk_buff *skb);
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struct sk_buff *skw_recycle_skb_get(struct skw_core *skw);
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#endif
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void skw_skb_kfree(struct skw_core *skw, struct sk_buff *skb);
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int skw_pcie_cmd_xmit(struct skw_core *skw, void *data, int data_len);
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int skw_pcie_xmit(struct skw_core *skw, int lmac_id, struct sk_buff_head *txq);
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int skw_sdio_cmd_xmit(struct skw_core *skw, void *data, int data_len);
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int skw_sdio_xmit(struct skw_core *skw, int lmac_id, struct sk_buff_head *txq);
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int skw_usb_cmd_xmit(struct skw_core *skw, void *data, int data_len);
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int skw_usb_xmit(struct skw_core *skw, int lmac_id, struct sk_buff_head *txq);
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int skw_hw_xmit_init(struct skw_core *skw, int dma);
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int skw_tx_init(struct skw_core *skw);
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int skw_tx_deinit(struct skw_core *skw);
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void skw_sdio_hdr_set(struct skw_core *skw, struct sk_buff *skb, int lmac_id);
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int skw_vring_set(struct skw_core *skw, void *data, u16 len, int lmac_id);
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u16 skw_vring_available_count(struct skw_tx_vring *tx_vring);
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#endif
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