drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h

   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__ */