1/* 10G controller driver for Samsung SoCs
2 *
3 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
4 *		http://www.samsung.com
5 *
6 * Author: Siva Reddy Kallam <siva.kallam@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
11 */
12#ifndef __SXGBE_DMA_H__
13#define __SXGBE_DMA_H__
14
15/* forward declaration */
16struct sxgbe_extra_stats;
17
18#define SXGBE_DMA_BLENMAP_LSHIFT	1
19#define SXGBE_DMA_TXPBL_LSHIFT		16
20#define SXGBE_DMA_RXPBL_LSHIFT		16
21#define DEFAULT_DMA_PBL			8
22
23struct sxgbe_dma_ops {
24	/* DMA core initialization */
25	int (*init)(void __iomem *ioaddr, int fix_burst, int burst_map);
26	void (*cha_init)(void __iomem *ioaddr, int cha_num, int fix_burst,
27			 int pbl, dma_addr_t dma_tx, dma_addr_t dma_rx,
28			 int t_rzie, int r_rsize);
29	void (*enable_dma_transmission)(void __iomem *ioaddr, int dma_cnum);
30	void (*enable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
31	void (*disable_dma_irq)(void __iomem *ioaddr, int dma_cnum);
32	void (*start_tx)(void __iomem *ioaddr, int tchannels);
33	void (*start_tx_queue)(void __iomem *ioaddr, int dma_cnum);
34	void (*stop_tx)(void __iomem *ioaddr, int tchannels);
35	void (*stop_tx_queue)(void __iomem *ioaddr, int dma_cnum);
36	void (*start_rx)(void __iomem *ioaddr, int rchannels);
37	void (*stop_rx)(void __iomem *ioaddr, int rchannels);
38	int (*tx_dma_int_status)(void __iomem *ioaddr, int channel_no,
39				 struct sxgbe_extra_stats *x);
40	int (*rx_dma_int_status)(void __iomem *ioaddr, int channel_no,
41				 struct sxgbe_extra_stats *x);
42	/* Program the HW RX Watchdog */
43	void (*rx_watchdog)(void __iomem *ioaddr, u32 riwt);
44	/* Enable TSO for each DMA channel */
45	void (*enable_tso)(void __iomem *ioaddr, u8 chan_num);
46};
47
48const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void);
49
50#endif /* __SXGBE_CORE_H__ */
51