/** @file

  Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef _EMMC_BLOCK_IO_PEI_H_
#define _EMMC_BLOCK_IO_PEI_H_

#include <PiPei.h>

#include <Ppi/SdMmcHostController.h>
#include <Ppi/BlockIo.h>
#include <Ppi/BlockIo2.h>
#include <Ppi/IoMmu.h>
#include <Ppi/EndOfPeiPhase.h>

#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/IoLib.h>
#include <Library/TimerLib.h>
#include <Library/PeiServicesLib.h>

#include <IndustryStandard/Emmc.h>

typedef struct _EMMC_PEIM_HC_PRIVATE_DATA  EMMC_PEIM_HC_PRIVATE_DATA;
typedef struct _EMMC_PEIM_HC_SLOT          EMMC_PEIM_HC_SLOT;
typedef struct _EMMC_TRB                   EMMC_TRB;

#include "EmmcHci.h"
#include "EmmcHcMem.h"

#define EMMC_PEIM_SIG       SIGNATURE_32 ('E', 'M', 'C', 'P')
#define EMMC_PEIM_SLOT_SIG  SIGNATURE_32 ('E', 'M', 'C', 'S')

#define EMMC_PEIM_MAX_SLOTS       6
#define EMMC_PEIM_MAX_PARTITIONS  8

struct _EMMC_PEIM_HC_SLOT {
  UINT32                       Signature;
  EFI_PEI_BLOCK_IO2_MEDIA      Media[EMMC_PEIM_MAX_PARTITIONS];
  UINT8                        MediaNum;
  EMMC_PARTITION_TYPE          PartitionType[EMMC_PEIM_MAX_PARTITIONS];

  UINTN                        EmmcHcBase;
  EMMC_HC_SLOT_CAP             Capability;
  EMMC_CSD                     Csd;
  EMMC_EXT_CSD                 ExtCsd;
  BOOLEAN                      SectorAddressing;
  EMMC_PEIM_HC_PRIVATE_DATA    *Private;
};

struct _EMMC_PEIM_HC_PRIVATE_DATA {
  UINT32                            Signature;
  EMMC_PEIM_MEM_POOL                *Pool;
  EFI_PEI_RECOVERY_BLOCK_IO_PPI     BlkIoPpi;
  EFI_PEI_RECOVERY_BLOCK_IO2_PPI    BlkIo2Ppi;
  EFI_PEI_PPI_DESCRIPTOR            BlkIoPpiList;
  EFI_PEI_PPI_DESCRIPTOR            BlkIo2PpiList;

  //
  // EndOfPei callback is used to do the cleanups before exit of PEI phase.
  //
  EFI_PEI_NOTIFY_DESCRIPTOR         EndOfPeiNotifyList;

  EMMC_PEIM_HC_SLOT                 Slot[EMMC_PEIM_MAX_SLOTS];
  UINT8                             SlotNum;
  UINT8                             TotalBlkIoDevices;
};

#define EMMC_TIMEOUT  MultU64x32((UINT64)(3), 1000000)
#define GET_EMMC_PEIM_HC_PRIVATE_DATA_FROM_THIS(a)         CR (a, EMMC_PEIM_HC_PRIVATE_DATA, BlkIoPpi, EMMC_PEIM_SIG)
#define GET_EMMC_PEIM_HC_PRIVATE_DATA_FROM_THIS2(a)        CR (a, EMMC_PEIM_HC_PRIVATE_DATA, BlkIo2Ppi, EMMC_PEIM_SIG)
#define GET_EMMC_PEIM_HC_PRIVATE_DATA_FROM_THIS_NOTIFY(a)  CR (a, EMMC_PEIM_HC_PRIVATE_DATA, EndOfPeiNotifyList, EMMC_PEIM_SIG)

struct _EMMC_TRB {
  EMMC_PEIM_HC_SLOT         *Slot;
  UINT16                    BlockSize;

  EMMC_COMMAND_PACKET       *Packet;
  VOID                      *Data;
  UINT32                    DataLen;
  BOOLEAN                   Read;
  EFI_PHYSICAL_ADDRESS      DataPhy;
  VOID                      *DataMap;
  EMMC_HC_TRANSFER_MODE     Mode;

  UINT64                    Timeout;

  EMMC_HC_ADMA_DESC_LINE    *AdmaDesc;
  UINTN                     AdmaDescSize;
};

/**
  Gets the count of block I/O devices that one specific block driver detects.

  This function is used for getting the count of block I/O devices that one
  specific block driver detects.  To the PEI ATAPI driver, it returns the number
  of all the detected ATAPI devices it detects during the enumeration process.
  To the PEI legacy floppy driver, it returns the number of all the legacy
  devices it finds during its enumeration process. If no device is detected,
  then the function will return zero.

  @param[in]  PeiServices          General-purpose services that are available
                                   to every PEIM.
  @param[in]  This                 Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI
                                   instance.
  @param[out] NumberBlockDevices   The number of block I/O devices discovered.

  @retval     EFI_SUCCESS          The operation performed successfully.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimGetDeviceNo (
  IN  EFI_PEI_SERVICES               **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO_PPI  *This,
  OUT UINTN                          *NumberBlockDevices
  );

/**
  Gets a block device's media information.

  This function will provide the caller with the specified block device's media
  information. If the media changes, calling this function will update the media
  information accordingly.

  @param[in]  PeiServices   General-purpose services that are available to every
                            PEIM
  @param[in]  This          Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
  @param[in]  DeviceIndex   Specifies the block device to which the function wants
                            to talk. Because the driver that implements Block I/O
                            PPIs will manage multiple block devices, the PPIs that
                            want to talk to a single device must specify the
                            device index that was assigned during the enumeration
                            process. This index is a number from one to
                            NumberBlockDevices.
  @param[out] MediaInfo     The media information of the specified block media.
                            The caller is responsible for the ownership of this
                            data structure.

  @par Note:
      The MediaInfo structure describes an enumeration of possible block device
      types.  This enumeration exists because no device paths are actually passed
      across interfaces that describe the type or class of hardware that is publishing
      the block I/O interface. This enumeration will allow for policy decisions
      in the Recovery PEIM, such as "Try to recover from legacy floppy first,
      LS-120 second, CD-ROM third." If there are multiple partitions abstracted
      by a given device type, they should be reported in ascending order; this
      order also applies to nested partitions, such as legacy MBR, where the
      outermost partitions would have precedence in the reporting order. The
      same logic applies to systems such as IDE that have precedence relationships
      like "Master/Slave" or "Primary/Secondary". The master device should be
      reported first, the slave second.

  @retval EFI_SUCCESS        Media information about the specified block device
                             was obtained successfully.
  @retval EFI_DEVICE_ERROR   Cannot get the media information due to a hardware
                             error.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimGetMediaInfo (
  IN  EFI_PEI_SERVICES               **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO_PPI  *This,
  IN  UINTN                          DeviceIndex,
  OUT EFI_PEI_BLOCK_IO_MEDIA         *MediaInfo
  );

/**
  Reads the requested number of blocks from the specified block device.

  The function reads the requested number of blocks from the device. All the
  blocks are read, or an error is returned. If there is no media in the device,
  the function returns EFI_NO_MEDIA.

  @param[in]  PeiServices   General-purpose services that are available to
                            every PEIM.
  @param[in]  This          Indicates the EFI_PEI_RECOVERY_BLOCK_IO_PPI instance.
  @param[in]  DeviceIndex   Specifies the block device to which the function wants
                            to talk. Because the driver that implements Block I/O
                            PPIs will manage multiple block devices, PPIs that
                            want to talk to a single device must specify the device
                            index that was assigned during the enumeration process.
                            This index is a number from one to NumberBlockDevices.
  @param[in]  StartLBA      The starting logical block address (LBA) to read from
                            on the device
  @param[in]  BufferSize    The size of the Buffer in bytes. This number must be
                            a multiple of the intrinsic block size of the device.
  @param[out] Buffer        A pointer to the destination buffer for the data.
                            The caller is responsible for the ownership of the
                            buffer.

  @retval EFI_SUCCESS             The data was read correctly from the device.
  @retval EFI_DEVICE_ERROR        The device reported an error while attempting
                                  to perform the read operation.
  @retval EFI_INVALID_PARAMETER   The read request contains LBAs that are not
                                  valid, or the buffer is not properly aligned.
  @retval EFI_NO_MEDIA            There is no media in the device.
  @retval EFI_BAD_BUFFER_SIZE     The BufferSize parameter is not a multiple of
                                  the intrinsic block size of the device.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimReadBlocks (
  IN  EFI_PEI_SERVICES               **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO_PPI  *This,
  IN  UINTN                          DeviceIndex,
  IN  EFI_PEI_LBA                    StartLBA,
  IN  UINTN                          BufferSize,
  OUT VOID                           *Buffer
  );

/**
  Gets the count of block I/O devices that one specific block driver detects.

  This function is used for getting the count of block I/O devices that one
  specific block driver detects.  To the PEI ATAPI driver, it returns the number
  of all the detected ATAPI devices it detects during the enumeration process.
  To the PEI legacy floppy driver, it returns the number of all the legacy
  devices it finds during its enumeration process. If no device is detected,
  then the function will return zero.

  @param[in]  PeiServices          General-purpose services that are available
                                   to every PEIM.
  @param[in]  This                 Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI
                                   instance.
  @param[out] NumberBlockDevices   The number of block I/O devices discovered.

  @retval     EFI_SUCCESS          The operation performed successfully.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimGetDeviceNo2 (
  IN  EFI_PEI_SERVICES                **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO2_PPI  *This,
  OUT UINTN                           *NumberBlockDevices
  );

/**
  Gets a block device's media information.

  This function will provide the caller with the specified block device's media
  information. If the media changes, calling this function will update the media
  information accordingly.

  @param[in]  PeiServices   General-purpose services that are available to every
                            PEIM
  @param[in]  This          Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
  @param[in]  DeviceIndex   Specifies the block device to which the function wants
                            to talk. Because the driver that implements Block I/O
                            PPIs will manage multiple block devices, the PPIs that
                            want to talk to a single device must specify the
                            device index that was assigned during the enumeration
                            process. This index is a number from one to
                            NumberBlockDevices.
  @param[out] MediaInfo     The media information of the specified block media.
                            The caller is responsible for the ownership of this
                            data structure.

  @par Note:
      The MediaInfo structure describes an enumeration of possible block device
      types.  This enumeration exists because no device paths are actually passed
      across interfaces that describe the type or class of hardware that is publishing
      the block I/O interface. This enumeration will allow for policy decisions
      in the Recovery PEIM, such as "Try to recover from legacy floppy first,
      LS-120 second, CD-ROM third." If there are multiple partitions abstracted
      by a given device type, they should be reported in ascending order; this
      order also applies to nested partitions, such as legacy MBR, where the
      outermost partitions would have precedence in the reporting order. The
      same logic applies to systems such as IDE that have precedence relationships
      like "Master/Slave" or "Primary/Secondary". The master device should be
      reported first, the slave second.

  @retval EFI_SUCCESS        Media information about the specified block device
                             was obtained successfully.
  @retval EFI_DEVICE_ERROR   Cannot get the media information due to a hardware
                             error.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimGetMediaInfo2 (
  IN  EFI_PEI_SERVICES                **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO2_PPI  *This,
  IN  UINTN                           DeviceIndex,
  OUT EFI_PEI_BLOCK_IO2_MEDIA         *MediaInfo
  );

/**
  Reads the requested number of blocks from the specified block device.

  The function reads the requested number of blocks from the device. All the
  blocks are read, or an error is returned. If there is no media in the device,
  the function returns EFI_NO_MEDIA.

  @param[in]  PeiServices   General-purpose services that are available to
                            every PEIM.
  @param[in]  This          Indicates the EFI_PEI_RECOVERY_BLOCK_IO2_PPI instance.
  @param[in]  DeviceIndex   Specifies the block device to which the function wants
                            to talk. Because the driver that implements Block I/O
                            PPIs will manage multiple block devices, PPIs that
                            want to talk to a single device must specify the device
                            index that was assigned during the enumeration process.
                            This index is a number from one to NumberBlockDevices.
  @param[in]  StartLBA      The starting logical block address (LBA) to read from
                            on the device
  @param[in]  BufferSize    The size of the Buffer in bytes. This number must be
                            a multiple of the intrinsic block size of the device.
  @param[out] Buffer        A pointer to the destination buffer for the data.
                            The caller is responsible for the ownership of the
                            buffer.

  @retval EFI_SUCCESS             The data was read correctly from the device.
  @retval EFI_DEVICE_ERROR        The device reported an error while attempting
                                  to perform the read operation.
  @retval EFI_INVALID_PARAMETER   The read request contains LBAs that are not
                                  valid, or the buffer is not properly aligned.
  @retval EFI_NO_MEDIA            There is no media in the device.
  @retval EFI_BAD_BUFFER_SIZE     The BufferSize parameter is not a multiple of
                                  the intrinsic block size of the device.

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimReadBlocks2 (
  IN  EFI_PEI_SERVICES                **PeiServices,
  IN  EFI_PEI_RECOVERY_BLOCK_IO2_PPI  *This,
  IN  UINTN                           DeviceIndex,
  IN  EFI_PEI_LBA                     StartLBA,
  IN  UINTN                           BufferSize,
  OUT VOID                            *Buffer
  );

/**
  Initialize the memory management pool for the host controller.

  @param  Private               The Emmc Peim driver private data.

  @retval EFI_SUCCESS           The memory pool is initialized.
  @retval Others                Fail to init the memory pool.

**/
EFI_STATUS
EmmcPeimInitMemPool (
  IN  EMMC_PEIM_HC_PRIVATE_DATA  *Private
  );

/**
  Release the memory management pool.

  @param  Pool                  The memory pool to free.

  @retval EFI_DEVICE_ERROR      Fail to free the memory pool.
  @retval EFI_SUCCESS           The memory pool is freed.

**/
EFI_STATUS
EmmcPeimFreeMemPool (
  IN EMMC_PEIM_MEM_POOL  *Pool
  );

/**
  Allocate some memory from the host controller's memory pool
  which can be used to communicate with host controller.

  @param  Pool      The host controller's memory pool.
  @param  Size      Size of the memory to allocate.

  @return The allocated memory or NULL.

**/
VOID *
EmmcPeimAllocateMem (
  IN  EMMC_PEIM_MEM_POOL  *Pool,
  IN  UINTN               Size
  );

/**
  Free the allocated memory back to the memory pool.

  @param  Pool           The memory pool of the host controller.
  @param  Mem            The memory to free.
  @param  Size           The size of the memory to free.

**/
VOID
EmmcPeimFreeMem (
  IN EMMC_PEIM_MEM_POOL  *Pool,
  IN VOID                *Mem,
  IN UINTN               Size
  );

/**
  Initialize IOMMU.
**/
VOID
IoMmuInit (
  VOID
  );

/**
  Provides the controller-specific addresses required to access system memory from a
  DMA bus master.

  @param  Operation             Indicates if the bus master is going to read or write to system memory.
  @param  HostAddress           The system memory address to map to the PCI controller.
  @param  NumberOfBytes         On input the number of bytes to map. On output the number of bytes
                                that were mapped.
  @param  DeviceAddress         The resulting map address for the bus master PCI controller to use to
                                access the hosts HostAddress.
  @param  Mapping               A resulting value to pass to Unmap().

  @retval EFI_SUCCESS           The range was mapped for the returned NumberOfBytes.
  @retval EFI_UNSUPPORTED       The HostAddress cannot be mapped as a common buffer.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES  The request could not be completed due to a lack of resources.
  @retval EFI_DEVICE_ERROR      The system hardware could not map the requested address.

**/
EFI_STATUS
IoMmuMap (
  IN  EDKII_IOMMU_OPERATION  Operation,
  IN  VOID                   *HostAddress,
  IN  OUT UINTN              *NumberOfBytes,
  OUT EFI_PHYSICAL_ADDRESS   *DeviceAddress,
  OUT VOID                   **Mapping
  );

/**
  Completes the Map() operation and releases any corresponding resources.

  @param  Mapping               The mapping value returned from Map().

  @retval EFI_SUCCESS           The range was unmapped.
  @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by Map().
  @retval EFI_DEVICE_ERROR      The data was not committed to the target system memory.
**/
EFI_STATUS
IoMmuUnmap (
  IN VOID  *Mapping
  );

/**
  Allocates pages that are suitable for an OperationBusMasterCommonBuffer or
  OperationBusMasterCommonBuffer64 mapping.

  @param  Pages                 The number of pages to allocate.
  @param  HostAddress           A pointer to store the base system memory address of the
                                allocated range.
  @param  DeviceAddress         The resulting map address for the bus master PCI controller to use to
                                access the hosts HostAddress.
  @param  Mapping               A resulting value to pass to Unmap().

  @retval EFI_SUCCESS           The requested memory pages were allocated.
  @retval EFI_UNSUPPORTED       Attributes is unsupported. The only legal attribute bits are
                                MEMORY_WRITE_COMBINE and MEMORY_CACHED.
  @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
  @retval EFI_OUT_OF_RESOURCES  The memory pages could not be allocated.

**/
EFI_STATUS
IoMmuAllocateBuffer (
  IN UINTN                  Pages,
  OUT VOID                  **HostAddress,
  OUT EFI_PHYSICAL_ADDRESS  *DeviceAddress,
  OUT VOID                  **Mapping
  );

/**
  Frees memory that was allocated with AllocateBuffer().

  @param  Pages                 The number of pages to free.
  @param  HostAddress           The base system memory address of the allocated range.
  @param  Mapping               The mapping value returned from Map().

  @retval EFI_SUCCESS           The requested memory pages were freed.
  @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
                                was not allocated with AllocateBuffer().

**/
EFI_STATUS
IoMmuFreeBuffer (
  IN UINTN  Pages,
  IN VOID   *HostAddress,
  IN VOID   *Mapping
  );

/**
  One notified function to cleanup the allocated DMA buffers at the end of PEI.

  @param[in]  PeiServices        Pointer to PEI Services Table.
  @param[in]  NotifyDescriptor   Pointer to the descriptor for the Notification
                                 event that caused this function to execute.
  @param[in]  Ppi                Pointer to the PPI data associated with this function.

  @retval     EFI_SUCCESS  The function completes successfully

**/
EFI_STATUS
EFIAPI
EmmcBlockIoPeimEndOfPei (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDescriptor,
  IN VOID                       *Ppi
  );

#endif