1/** @file
2
3Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
4
5This program and the accompanying materials
6are licensed and made available under the terms and conditions
7of the BSD License which accompanies this distribution.  The
8full text of the license may be found at
9http://opensource.org/licenses/bsd-license.php
10
11THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14**/
15
16#ifndef _SD_PEIM_MEM_H_
17#define _SD_PEIM_MEM_H_
18
19#define SD_PEIM_MEM_BIT(a)          ((UINTN)(1 << (a)))
20
21#define SD_PEIM_MEM_BIT_IS_SET(Data, Bit)   \
22          ((BOOLEAN)(((Data) & SD_PEIM_MEM_BIT(Bit)) == SD_PEIM_MEM_BIT(Bit)))
23
24typedef struct _SD_PEIM_MEM_BLOCK SD_PEIM_MEM_BLOCK;
25
26struct _SD_PEIM_MEM_BLOCK {
27  UINT8                   *Bits;    // Bit array to record which unit is allocated
28  UINTN                   BitsLen;
29  UINT8                   *Buf;
30  UINTN                   BufLen;   // Memory size in bytes
31  SD_PEIM_MEM_BLOCK       *Next;
32};
33
34typedef struct _SD_PEIM_MEM_POOL {
35  SD_PEIM_MEM_BLOCK       *Head;
36} SD_PEIM_MEM_POOL;
37
38//
39// Memory allocation unit, note that the value must meet SD spec alignment requirement.
40//
41#define SD_PEIM_MEM_UNIT           128
42
43#define SD_PEIM_MEM_UNIT_MASK      (SD_PEIM_MEM_UNIT - 1)
44#define SD_PEIM_MEM_DEFAULT_PAGES  16
45
46#define SD_PEIM_MEM_ROUND(Len)     (((Len) + SD_PEIM_MEM_UNIT_MASK) & (~SD_PEIM_MEM_UNIT_MASK))
47
48//
49// Advance the byte and bit to the next bit, adjust byte accordingly.
50//
51#define SD_PEIM_NEXT_BIT(Byte, Bit)   \
52          do {                \
53            (Bit)++;          \
54            if ((Bit) > 7) {  \
55              (Byte)++;       \
56              (Bit) = 0;      \
57            }                 \
58          } while (0)
59
60#endif
61
62