GrallocFuncs

    Display

    Description:

    Defines pointers to the memory driver functions.

    Summary

    Data Fields

    Details

    AllocMem

    Description:

    Allocates memory based on the parameters passed by the GUI.

    Parameters:

    Name

    Description
    hdl Indicates the pointer to the handle of memory.
    type Indicates the type of memory to allocate. The value[/table/tgroup/tbody/row/entry/div {“”}) [/table/tgroup/tbody/row/entry/div/div {“”}) 0 (div] (div] indicates memory without cache, [/table/tgroup/tbody/row/entry/div {“”}) [/table/tgroup/tbody/row/entry/div/div {“”}) 1 (div] (div] indicates memory with cache, and[/table/tgroup/tbody/row/entry/div {“”}) [/table/tgroup/tbody/row/entry/div/div {“”}) 2 (div] (div] indicates shared memory.
    size Indicates the size of memory to allocate, in bytes.

    Returns:

    Returns 0 if the operation is successful; returns an error code defined in otherwise.

    FlushCache

    Description:

    Flushes data from the cache to memory and invalidates the data in the cache.

    Parameters:

    Returns:

    Returns 0 if the operation is successful; returns an error code defined in DispErrCode otherwise.

    FlushMCache

    Description:

    Flushes data from the cache mapping to Mmap to memory and invalidates the data in the cache.

    Parameters:

    Name

    Description
    hdl Indicates the pointer to the handle of the cache.
    size Indicates the size of the cache from which data is to flush.

    Returns:

    Returns 0 if the operation is successful; returns an error code defined in DispErrCode otherwise.

    Description:

    Releases memory.

    Mmap

    Description:

    Maps memory with a specified physical address and size to memory without cache in the process’s address space.

    Parameters:

    Name

    Description
    phyAddr Indicates the physical address of memory to map.
    size Indicates the size of memory to map.

    Returns:

    Returns the pointer to a valid address if the operation is successful; returns NULL otherwise.

    MmapCache

      Description:

      Maps memory with a specified physical address and size to memory with cache in the process’s address space.

      Parameters:

      Returns:

      Returns the pointer to a valid address if the operation is successful; returns NULL otherwise.

      Unmap

      Description:

      Unmaps memory, that is, removes any mappings in the process’s address space.

      Parameters:

      Name

      Description
      virAddr Indicates the pointer to the virtual address of memory to unmap.
      size Indicates the size of memory to unmap.

      Returns: