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 */ 16 struct 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 23 struct 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 48 const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void); 49 50 #endif /* __SXGBE_CORE_H__ */ 51