LXR linux/drivers/net/ethernet/samsung/sxgbe/sxgbe

   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