81 lines
2.8 KiB
C
81 lines
2.8 KiB
C
/*
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* Copyright (C) 2010-2013 ARM Limited. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file ump_arch.h
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*
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* Header file for the arch dependent backend, which will do the communication with the UMP device driver.
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*/
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#ifndef _UNIFIED_MEMORY_PROVIDER_ARCH_H_
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#define _UNIFIED_MEMORY_PROVIDER_ARCH_H_
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#include "ump.h"
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#include "ump_ref_drv.h"
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#include "ump_internal.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Open UMP interface. */
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ump_result ump_arch_open(void);
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/** Close UMP interface. */
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void ump_arch_close(void);
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/** Allocate UMP memory. */
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ump_secure_id ump_arch_allocate(unsigned long * size, ump_alloc_constraints constraints);
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/** Query size of specified UMP memory, in bytes. */
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unsigned long ump_arch_size_get(ump_secure_id secure_id);
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/** Release a reference from specified UMP memory. */
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void ump_arch_reference_release(ump_secure_id secure_id);
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/** Map specified UMP memory into CPU address space */
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void* ump_arch_map(ump_secure_id secure_id, unsigned long size, ump_cache_enabled cache, unsigned long *cookie_out);
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/** Unmap specified UMP memory from CPU adderss space */
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void ump_arch_unmap(void* mapping, unsigned long size, unsigned long cookie);
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/** Memory synchronization - cache flushing of mapped memory
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* @return Is_cached: 1==True 0==NonCached */
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ump_cache_enabled ump_arch_msync(ump_secure_id secure_id, void* mapping, unsigned long cookie, void * address, unsigned long size, ump_cpu_msync_op op);
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/** Cache operation control. Tell when cache maintenance operations start and end.
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This will allow the kernel to merge cache operations togheter, thus making them faster */
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int ump_arch_cache_operations_control(ump_cache_op_control op);
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/** Memory synchronization - cache flushing if previous user was different hardware */
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int ump_arch_switch_hw_usage( ump_secure_id secure_id, ump_hw_usage new_user );
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/** Locking buffer. Blocking call if the buffer is already locked. */
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int ump_arch_lock( ump_secure_id secure_id, ump_lock_usage lock_usage );
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/** Unlocking buffer. Let other users lock the buffer for their usage */
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int ump_arch_unlock( ump_secure_id secure_id );
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ump_secure_id ump_arch_ion_import(int ion_fd, unsigned long *size, ump_alloc_constraints constraints);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UNIFIED_MEMORY_PROVIDER_ARCH_H_ */
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