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

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