1/* SPDX-License-Identifier: GPL-2.0-only */
2/* 10G controller driver for Samsung SoCs
3 *
4 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
6 *
7 * Author: Siva Reddy Kallam <siva.kallam@samsung.com>
8 */
9#ifndef __SXGBE_DMA_H__
10#define __SXGBE_DMA_H__
11
12/* forward declaration */
13struct sxgbe_extra_stats;
14
15#define SXGBE_DMA_BLENMAP_LSHIFT 1
16#define SXGBE_DMA_TXPBL_LSHIFT 16
17#define SXGBE_DMA_RXPBL_LSHIFT 16
18#define DEFAULT_DMA_PBL 8
19
20struct sxgbe_dma_ops {
21 /* DMA core initialization */
22 int (*init)(void __iomem *ioaddr, int fix_burst, int burst_map);
23 void (*cha_init)(void __iomem *ioaddr, int cha_num, int fix_burst,
24 int pbl, dma_addr_t dma_tx, dma_addr_t dma_rx,
25 int t_rzie, int r_rsize);
26 void (*enable_dma_transmission)(void __iomem *ioaddr, int dma_cnum);
27 void (*enable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
28 void (*disable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
29 void (*start_tx)(void __iomem *ioaddr, int tchannels);
30 void (*start_tx_queue)(void __iomem *ioaddr, int dma_cnum);
31 void (*stop_tx)(void __iomem *ioaddr, int tchannels);
32 void (*stop_tx_queue)(void __iomem *ioaddr, int dma_cnum);
33 void (*start_rx)(void __iomem *ioaddr, int rchannels);
34 void (*stop_rx)(void __iomem *ioaddr, int rchannels);
35 int (*tx_dma_int_status)(void __iomem *ioaddr, int channel_no,
36 struct sxgbe_extra_stats *x);
37 int (*rx_dma_int_status)(void __iomem *ioaddr, int channel_no,
38 struct sxgbe_extra_stats *x);
39 /* Program the HW RX Watchdog */
40 void (*rx_watchdog)(void __iomem *ioaddr, u32 riwt);
41 /* Enable TSO for each DMA channel */
42 void (*enable_tso)(void __iomem *ioaddr, u8 chan_num);
43};
44
45const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void);
46
47#endif /* __SXGBE_CORE_H__ */
48

source code of linux/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h