linux-imx

/*

 * Copyright (C) 2007, 2008, Marvell International Ltd.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * for more details.

 */

​

#ifndef MV_XOR_H

#define MV_XOR_H

​

#include <linux/types.h>

#include <linux/io.h>

#include <linux/dmaengine.h>

#include <linux/interrupt.h>

​

#define MV_XOR_POOL_SIZE        (MV_XOR_SLOT_SIZE * 3072)

#define MV_XOR_SLOT_SIZE        64

#define MV_XOR_THRESHOLD        1

#define MV_XOR_MAX_CHANNELS             2

​

#define MV_XOR_MIN_BYTE_COUNT       SZ_128

#define MV_XOR_MAX_BYTE_COUNT       (SZ_16M - 1)

​

/* Values for the XOR_CONFIG register */

#define XOR_OPERATION_MODE_XOR      0

#define XOR_OPERATION_MODE_MEMCPY   2

#define XOR_OPERATION_MODE_IN_DESC      7

#define XOR_DESCRIPTOR_SWAP     BIT(14)

#define XOR_DESC_SUCCESS        0x40000000

​

#define XOR_DESC_OPERATION_XOR          (0 << 24)

#define XOR_DESC_OPERATION_CRC32C       (1 << 24)

#define XOR_DESC_OPERATION_MEMCPY       (2 << 24)

​

#define XOR_DESC_DMA_OWNED      BIT(31)

#define XOR_DESC_EOD_INT_EN     BIT(31)

​

#define XOR_CURR_DESC(chan) (chan->mmr_high_base + 0x10 + (chan->idx * 4))

#define XOR_NEXT_DESC(chan) (chan->mmr_high_base + 0x00 + (chan->idx * 4))

#define XOR_BYTE_COUNT(chan)    (chan->mmr_high_base + 0x20 + (chan->idx * 4))

#define XOR_DEST_POINTER(chan)  (chan->mmr_high_base + 0xB0 + (chan->idx * 4))

#define XOR_BLOCK_SIZE(chan)    (chan->mmr_high_base + 0xC0 + (chan->idx * 4))

#define XOR_INIT_VALUE_LOW(chan)    (chan->mmr_high_base + 0xE0)

#define XOR_INIT_VALUE_HIGH(chan)   (chan->mmr_high_base + 0xE4)

​

#define XOR_CONFIG(chan)    (chan->mmr_base + 0x10 + (chan->idx * 4))

#define XOR_ACTIVATION(chan)    (chan->mmr_base + 0x20 + (chan->idx * 4))

#define XOR_INTR_CAUSE(chan)    (chan->mmr_base + 0x30)

#define XOR_INTR_MASK(chan) (chan->mmr_base + 0x40)

#define XOR_ERROR_CAUSE(chan)   (chan->mmr_base + 0x50)

#define XOR_ERROR_ADDR(chan)    (chan->mmr_base + 0x60)

​

#define XOR_INT_END_OF_DESC BIT(0)

#define XOR_INT_END_OF_CHAIN    BIT(1)

#define XOR_INT_STOPPED     BIT(2)

#define XOR_INT_PAUSED      BIT(3)

#define XOR_INT_ERR_DECODE  BIT(4)

#define XOR_INT_ERR_RDPROT  BIT(5)

#define XOR_INT_ERR_WRPROT  BIT(6)

#define XOR_INT_ERR_OWN     BIT(7)

#define XOR_INT_ERR_PAR     BIT(8)

#define XOR_INT_ERR_MBUS    BIT(9)

​

#define XOR_INTR_ERRORS     (XOR_INT_ERR_DECODE | XOR_INT_ERR_RDPROT | \

                 XOR_INT_ERR_WRPROT | XOR_INT_ERR_OWN    | \

                 XOR_INT_ERR_PAR    | XOR_INT_ERR_MBUS)

​

#define XOR_INTR_MASK_VALUE (XOR_INT_END_OF_DESC | XOR_INT_END_OF_CHAIN | \

                 XOR_INT_STOPPED     | XOR_INTR_ERRORS)

​

#define WINDOW_BASE(w)      (0x50 + ((w) << 2))

#define WINDOW_SIZE(w)      (0x70 + ((w) << 2))

#define WINDOW_REMAP_HIGH(w)    (0x90 + ((w) << 2))

#define WINDOW_BAR_ENABLE(chan) (0x40 + ((chan) << 2))

#define WINDOW_OVERRIDE_CTRL(chan)  (0xA0 + ((chan) << 2))

​

#define WINDOW_COUNT        8

​

struct mv_xor_device {

    void __iomem         *xor_base;

    void __iomem         *xor_high_base;

    struct clk       *clk;

    struct mv_xor_chan   *channels[MV_XOR_MAX_CHANNELS];

    int          xor_type;

​

    u32                  win_start[WINDOW_COUNT];