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 */ 13 struct 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 20 struct 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 45 const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void); 46 47 #endif /* __SXGBE_CORE_H__ */ 48