108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
/*
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* Copyright 2011 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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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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* This file is part of MetalSVM.
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*/
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#ifndef __ARCH_SVM_H__
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#define __ARCH_SVM_H__
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#include <metalsvm/stddef.h>
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#ifdef CONFIG_ROCKCREEK
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#include <asm/RCCE_lib.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef CONFIG_ROCKCREEK
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#define SVM_STRONG (1 << 0)
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#define SVM_LAZYRELEASE (1 << 1)
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/** @brief Init routine of the SVM subsystem
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*
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* @return
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* - 0 on success
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* - -ENOMEM not enough memory
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*/
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int svm_init(void);
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/** @brief Memory allocator of the SVM subsystem.
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*
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* Like RCCE function, belongs svmmalloc to the synchronous
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* function.
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*
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* @return Pointer to the new memory range
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*/
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void* svmmalloc(size_t sizei, uint32_t flags);
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/** @brief Frees memory, which is managed by the SVM subsystem
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*
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* Like RCCE function, belongs svmfree to the synchronous function.
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*/
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void svmfree(void* addr, size_t size);
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/** @brief Request for exlusive access
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*
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* @return
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* - 0 on success
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*/
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int svm_access_request(size_t addr);
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/** @brief emit page to core ue
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*
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* @return
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* - 0 on success
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*/
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int svm_emit_page(size_t addr, int ue);
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/* @brief invalidate the cache entries for all SVM regions
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*/
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static inline void svm_invalidate(void)
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{
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asm volatile ( ".byte 0x0f; .byte 0x0a;\n" ); // CL1FLUSHMB
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}
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/* *brief flushs the cache for all SVM regions
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*/
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#ifdef CONFIG_ROCKCREEK
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#ifndef SVM_WB
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static inline void svm_flush(void)
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{
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// need to write to another line to make sure the write combine buffer gets flushed
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*(int *)RCCE_fool_write_combine_buffer = 1;
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}
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#else
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void svm_flush(void);
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#endif
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#endif
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/* @brief dumps the some performance counters (e.g. numbers of page migrations)
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*
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* @retrun
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* - 0 on success
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*/
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int svm_statistics(void);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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