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