mirror of https://github.com/acidanthera/audk.git
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/** @file
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _SD_PEIM_MEM_H_
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#define _SD_PEIM_MEM_H_
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#define SD_PEIM_MEM_BIT(a) ((UINTN)(1 << (a)))
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#define SD_PEIM_MEM_BIT_IS_SET(Data, Bit) \
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((BOOLEAN)(((Data) & SD_PEIM_MEM_BIT(Bit)) == SD_PEIM_MEM_BIT(Bit)))
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typedef struct _SD_PEIM_MEM_BLOCK SD_PEIM_MEM_BLOCK;
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struct _SD_PEIM_MEM_BLOCK {
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UINT8 *Bits; // Bit array to record which unit is allocated
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UINTN BitsLen;
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UINT8 *Buf;
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UINT8 *BufHost;
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UINTN BufLen; // Memory size in bytes
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VOID *Mapping;
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SD_PEIM_MEM_BLOCK *Next;
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};
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typedef struct _SD_PEIM_MEM_POOL {
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SD_PEIM_MEM_BLOCK *Head;
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} SD_PEIM_MEM_POOL;
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//
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// Memory allocation unit, note that the value must meet SD spec alignment requirement.
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//
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#define SD_PEIM_MEM_UNIT 128
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#define SD_PEIM_MEM_UNIT_MASK (SD_PEIM_MEM_UNIT - 1)
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#define SD_PEIM_MEM_DEFAULT_PAGES 16
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#define SD_PEIM_MEM_ROUND(Len) (((Len) + SD_PEIM_MEM_UNIT_MASK) & (~SD_PEIM_MEM_UNIT_MASK))
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//
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// Advance the byte and bit to the next bit, adjust byte accordingly.
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//
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#define SD_PEIM_NEXT_BIT(Byte, Bit) \
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do { \
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(Bit)++; \
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if ((Bit) > 7) { \
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(Byte)++; \
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(Bit) = 0; \
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} \
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} while (0)
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#endif
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