56 lines
2.4 KiB
C
56 lines
2.4 KiB
C
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/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __MEM_MGT_H__
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#define __MEM_MGT_H__
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/* Macros */
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#define BITMAP_WORD_SIZE 32
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struct mem_pool {
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void *start_addr; /* Start Address of Memory Pool */
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spinlock_t spinlock; /* To protect Memory Allocation */
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uint32_t size; /* Size of Memory Pool in Bytes */
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uint32_t buff_size; /* Size of one Buffer in Bytes */
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uint32_t total_buffs; /* Total Buffers in Memory Pool */
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uint32_t bmp_size; /* Size of Bitmap Array */
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uint32_t *bitmap; /* Pointer to allocation bitmap */
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uint32_t *contiguity_bitmap; /* Pointer to contiguity bitmap */
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};
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/* APIs exposing memory allocation/deallocation abstractions */
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void *malloc(unsigned int num_bytes);
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void *calloc(unsigned int num_elements, unsigned int element_size);
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void *alloc_page();
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void *alloc_pages(unsigned int page_num);
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void free(void *ptr);
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#endif /* MEM_MGT_H_ */
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