/****************************************************************************
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*    Copyright (c) 2014 - 2021 Vivante Corporation
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*****************************************************************************
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*    The GPL License (GPL)
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*    Copyright (C) 2014 - 2021 Vivante Corporation
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*    This program is free software; you can redistribute it and/or
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*    as published by the Free Software Foundation; either version 2
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#ifndef _GC_HAL_SECURITY_INTERFACE_H_
#define _GC_HAL_SECURITY_INTERFACE_H_
struct kernel_start_command {
    kernel_packet_command_t command;      /*! The command (always needs to be the first entry in a structure). */
    gctUINT8       gpu;                    /*! Which GPU. */
    gctUINT32      address;
    gctUINT32      bytes;
};

/*!
 @brief gckCOMMAND Object requests TrustZone to submit command buffer.
 @discussion
 Code in trustzone will check content of command buffer after copying command buffer to TrustZone.
 */
struct kernel_submit {
    kernel_packet_command_t command;      /*! The command (always needs to be the first entry in a structure). */
    gctUINT8       gpu;                    /*! Which GPU. */
    gctUINT8       kernel_command;         /*! Whether it is a kernel command. */
    gctUINT32      command_buffer_handle;  /*! Handle to command buffer. */
    gctUINT32      offset;                  /* Offset in command buffer. */
    gctUINT32 *    command_buffer;         /*! Content of command buffer need to be submit. */
    gctUINT32      command_buffer_length;  /*! Length of command buffer. */
};


/*!
 @brief gckVIDMEM Object requests TrustZone to allocate security memory.
 @discussion
 Allocate a buffer from security GPU memory.
 */
struct kernel_allocate_security_memory {
    kernel_packet_command_t command;      /*! The command (always needs to be the first entry in a structure). */
    gctUINT32      bytes;                  /*! Requested bytes. */
    gctUINT32      memory_handle;          /*! Handle of allocated memory. */
};

/*!
 @brief gckVIDMEM Object requests TrustZone to allocate security memory.
 @discussion
 Free a video memory buffer from security GPU memory.
 */
struct kernel_free_security_memory {
    kernel_packet_command_t command;      /*! The command (always needs to be the first entry in a structure). */
    gctUINT32      memory_handle;          /*! Handle of allocated memory. */
};

struct kernel_execute {
    kernel_packet_command_t command;      /*! The command (always needs to be the first entry in a structure). */
    gctUINT8       gpu;                    /*! Which GPU. */
    gctUINT8       kernel_command;         /*! Whether it is a kernel command. */
    gctUINT32 *    command_buffer;         /*! Content of command buffer need to be submit. */
    gctUINT32      command_buffer_length;  /*! Length of command buffer. */
};

typedef struct kernel_map_scatter_gather {
    gctUINT32      bytes;
    gctUINT32      physical;
    struct kernel_map_scatter_gather *next;
}
kernel_map_scatter_gather_t;

struct kernel_map_memory {
    kernel_packet_command_t command;
    kernel_map_scatter_gather_t *scatter;
    gctUINT32       *physicals;
    gctPHYS_ADDR_T  physical;   /*! Contiguous physical address range. */
    gctUINT32       pageCount;
    gctUINT32       gpuAddress;
};

struct kernel_unmap_memory {
    gctUINT32       gpuAddress;
    gctUINT32       pageCount;
};

struct kernel_read_mmu_exception {
    gctUINT32       mmuStatus;
    gctUINT32       mmuException;
};

struct kernel_handle_mmu_exception {
    gctUINT32       mmuStatus;
    gctPHYS_ADDR_T  physical;
    gctUINT32       gpuAddress;
};

typedef struct _gcsTA_INTERFACE {
    kernel_packet_command_t command;
    union {
        struct kernel_submit                   Submit;
        struct kernel_start_command            StartCommand;
        struct kernel_allocate_security_memory AllocateSecurityMemory;
        struct kernel_execute                  Execute;
        struct kernel_map_memory               MapMemory;
        struct kernel_unmap_memory             UnmapMemory;
        struct kernel_read_mmu_exception       ReadMMUException;
        struct kernel_handle_mmu_exception     HandleMMUException;
    } u;
    gceSTATUS result;
} gcsTA_INTERFACE;

#endif