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/*
* This confidential and proprietary software may be used only as
* authorised by a licensing agreement from ARM Limited
* (C) COPYRIGHT 2009-2010 ARM Limited
* ALL RIGHTS RESERVED
* The entire notice above must be reproduced on all authorised
* copies and copies may only be made to the extent permitted
* by a licensing agreement from ARM Limited.
*/
/**
* @file ump_ref_drv.h
*
* Reference driver extensions to the UMP user space API for allocating UMP memory
*/
#ifndef _UNIFIED_MEMORY_PROVIDER_REF_DRV_H_
#define _UNIFIED_MEMORY_PROVIDER_REF_DRV_H_
#include "ump.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
/* This enum must match with the IOCTL enum in ump_ioctl.h */
UMP_REF_DRV_CONSTRAINT_NONE = 0,
UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR = 1,
/* This enum is included by samsung */
UMP_REF_DRV_CONSTRAINT_USE_CACHE = 128,
} ump_alloc_constraints;
/** Allocate an UMP handle containing a memory buffer.
* Input: Size: The minimum size for the allocation.
* Usage: If this is UMP_REF_DRV_CONSTRAINT_USE_CACHE, the allocation is mapped as cached by the cpu.
* If it is UMP_REF_DRV_CONSTRAINT_NONE it is mapped as noncached.
* The flag UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR is not supported.*/
UMP_API_EXPORT ump_handle ump_ref_drv_allocate(unsigned long size, ump_alloc_constraints usage);
UMP_API_EXPORT ump_handle ump_ref_drv_ion_import(int ion_fd, ump_alloc_constraints constraints);
typedef enum {
UMP_MSYNC_CLEAN = 0 ,
UMP_MSYNC_CLEAN_AND_INVALIDATE = 1,
UMP_MSYNC_READOUT_CACHE_ENABLED = 128,
} ump_cpu_msync_op;
/** Flushing cache for an ump_handle.
* The function will always CLEAN_AND_INVALIDATE as long as the \a op is not UMP_MSYNC_READOUT_CACHE_ENABLED.
* If so it will only report back if the given ump_handle is cacheable.
* At the momement the implementation does not use \a address or \a size.
* Return value is 1 if cache is enabled, and 0 if it is disabled for the given allocation.*/
UMP_API_EXPORT int ump_cpu_msync_now(ump_handle mem, ump_cpu_msync_op op, void* address, int size);
#ifdef __cplusplus
}
#endif
#endif /*_UNIFIED_MEMORY_PROVIDER_REF_DRV_H_ */
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