1/* SPDX-License-Identifier: GPL-2.0-only
2 *
3 * Copyright (c) 2021, MediaTek Inc.
4 * Copyright (c) 2021-2022, Intel Corporation.
5 *
6 * Authors:
7 * Haijun Liu <haijun.liu@mediatek.com>
8 * Eliot Lee <eliot.lee@intel.com>
9 * Ricardo Martinez <ricardo.martinez@linux.intel.com>
10 *
11 * Contributors:
12 * Amir Hanania <amir.hanania@intel.com>
13 * Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
14 * Moises Veleta <moises.veleta@intel.com>
15 * Sreehari Kancharla <sreehari.kancharla@intel.com>
16 */
17
18#ifndef __T7XX_HIF_DPMA_TX_H__
19#define __T7XX_HIF_DPMA_TX_H__
20
21#include <linux/bits.h>
22#include <linux/skbuff.h>
23#include <linux/types.h>
24
25#include "t7xx_hif_dpmaif.h"
26
27#define DPMAIF_TX_DEFAULT_QUEUE 0
28
29struct dpmaif_drb {
30 __le32 header;
31 union {
32 struct {
33 __le32 data_addr_l;
34 __le32 data_addr_h;
35 } pd;
36 struct {
37 __le32 msg_hdr;
38 __le32 reserved1;
39 } msg;
40 };
41 __le32 reserved2;
42};
43
44/* Header fields */
45#define DRB_HDR_DATA_LEN GENMASK(31, 16)
46#define DRB_HDR_RESERVED GENMASK(15, 3)
47#define DRB_HDR_CONT BIT(2)
48#define DRB_HDR_DTYP GENMASK(1, 0)
49
50#define DRB_MSG_DW2_RES GENMASK(31, 30)
51#define DRB_MSG_L4_CHK BIT(29)
52#define DRB_MSG_IP_CHK BIT(28)
53#define DRB_MSG_RESERVED BIT(27)
54#define DRB_MSG_NETWORK_TYPE GENMASK(26, 24)
55#define DRB_MSG_CHANNEL_ID GENMASK(23, 16)
56#define DRB_MSG_COUNT_L GENMASK(15, 0)
57
58struct dpmaif_drb_skb {
59 struct sk_buff *skb;
60 dma_addr_t bus_addr;
61 unsigned int data_len;
62 u16 index:13;
63 u16 is_msg:1;
64 u16 is_frag:1;
65 u16 is_last:1;
66};
67
68int t7xx_dpmaif_tx_send_skb(struct dpmaif_ctrl *dpmaif_ctrl, unsigned int txq_number,
69 struct sk_buff *skb);
70void t7xx_dpmaif_tx_thread_rel(struct dpmaif_ctrl *dpmaif_ctrl);
71int t7xx_dpmaif_tx_thread_init(struct dpmaif_ctrl *dpmaif_ctrl);
72void t7xx_dpmaif_txq_free(struct dpmaif_tx_queue *txq);
73void t7xx_dpmaif_irq_tx_done(struct dpmaif_ctrl *dpmaif_ctrl, unsigned int que_mask);
74int t7xx_dpmaif_txq_init(struct dpmaif_tx_queue *txq);
75void t7xx_dpmaif_tx_stop(struct dpmaif_ctrl *dpmaif_ctrl);
76void t7xx_dpmaif_tx_clear(struct dpmaif_ctrl *dpmaif_ctrl);
77
78#endif /* __T7XX_HIF_DPMA_TX_H__ */
79

source code of linux/drivers/net/wwan/t7xx/t7xx_hif_dpmaif_tx.h