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Copyright (C) 2016 Marvell International Ltd.

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If you received this File from Marvell, you may opt to use, redistribute and/or
modify this File under the following licensing terms.
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are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright
  notice, this list of conditions and the following disclaimer in the
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  used to endorse or promote products derived from this software without
  specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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*******************************************************************************/
#ifndef __SPI_MASTER_H__
#define __SPI_MASTER_H__

#include <Library/IoLib.h>
#include <Library/PcdLib.h>
#include <Library/UefiLib.h>
#include <Library/DebugLib.h>
#include <Library/DxeServicesTableLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Uefi/UefiBaseType.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeLib.h>

#include <Protocol/Spi.h>

#define SPI_MASTER_SIGNATURE                      SIGNATURE_32 ('M', 'S', 'P', 'I')
#define SPI_MASTER_FROM_SPI_MASTER_PROTOCOL(a)  CR (a, SPI_MASTER, SpiMasterProtocol, SPI_MASTER_SIGNATURE)

// Marvell Flash Device Controller Registers
#define SPI_CTRL_REG                    (0x00)
#define SPI_CONF_REG                    (0x04)
#define SPI_DATA_OUT_REG                (0x08)
#define SPI_DATA_IN_REG                 (0x0c)
#define SPI_INT_CAUSE_REG               (0x10)

// Serial Memory Interface Control Register Masks
#define SPI_CS_NUM_OFFSET               2
#define SPI_CS_NUM_MASK                 (0x7 << SPI_CS_NUM_OFFSET)
#define SPI_MEM_READY_MASK              (0x1 << 1)
#define SPI_CS_EN_MASK                  (0x1 << 0)

// Serial Memory Interface Configuration Register Masks
#define SPI_BYTE_LENGTH_OFFSET          5
#define SPI_BYTE_LENGTH                 (0x1  << SPI_BYTE_LENGTH_OFFSET)
#define SPI_CPOL_OFFSET                 11
#define SPI_CPOL_MASK                   (0x1 << SPI_CPOL_OFFSET)
#define SPI_CPHA_OFFSET                 12
#define SPI_CPHA_MASK                  (0x1 << SPI_CPHA_OFFSET)
#define SPI_TXLSBF_OFFSET               13
#define SPI_TXLSBF_MASK                 (0x1 << SPI_TXLSBF_OFFSET)
#define SPI_RXLSBF_OFFSET               14
#define SPI_RXLSBF_MASK                 (0x1 << SPI_RXLSBF_OFFSET)

#define SPI_SPR_OFFSET                  0
#define SPI_SPR_MASK                    (0xf << SPI_SPR_OFFSET)
#define SPI_SPPR_0_OFFSET               4
#define SPI_SPPR_0_MASK                 (0x1 << SPI_SPPR_0_OFFSET)
#define SPI_SPPR_HI_OFFSET              6
#define SPI_SPPR_HI_MASK                (0x3 << SPI_SPPR_HI_OFFSET)

#define SPI_TRANSFER_BEGIN              0x01  // Assert CS before transfer
#define SPI_TRANSFER_END                0x02  // Deassert CS after transfers

#define SPI_TIMEOUT                     100000

typedef struct {
  MARVELL_SPI_MASTER_PROTOCOL SpiMasterProtocol;
  UINTN                   Signature;
  EFI_HANDLE              Handle;
  EFI_LOCK                Lock;
} SPI_MASTER;

EFI_STATUS
EFIAPI
MvSpiTransfer (
  IN MARVELL_SPI_MASTER_PROTOCOL *This,
  IN SPI_DEVICE *Slave,
  IN UINTN DataByteCount,
  IN VOID *DataOut,
  IN VOID *DataIn,
  IN UINTN Flag
  );

EFI_STATUS
EFIAPI
MvSpiReadWrite (
  IN  MARVELL_SPI_MASTER_PROTOCOL *This,
  IN  SPI_DEVICE *Slave,
  IN  UINT8 *Cmd,
  IN  UINTN CmdSize,
  IN  UINT8 *DataOut,
  OUT UINT8 *DataIn,
  IN  UINTN DataSize
  );

EFI_STATUS
EFIAPI
MvSpiInit (
  IN MARVELL_SPI_MASTER_PROTOCOL     * This
  );

SPI_DEVICE *
EFIAPI
MvSpiSetupSlave (
  IN MARVELL_SPI_MASTER_PROTOCOL     * This,
  IN SPI_DEVICE *Slave,
  IN UINTN Cs,
  IN SPI_MODE Mode
  );

EFI_STATUS
EFIAPI
MvSpiFreeSlave (
  IN SPI_DEVICE *Slave
  );

EFI_STATUS
EFIAPI
SpiMasterEntryPoint (
  IN EFI_HANDLE       ImageHandle,
  IN EFI_SYSTEM_TABLE *SystemTable
  );

#endif // __SPI_MASTER_H__