1 /** @file
2 
3 Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
4 
5 SPDX-License-Identifier: BSD-2-Clause-Patent
6 
7 **/
8 
9 #ifndef _SD_PEIM_MEM_H_
10 #define _SD_PEIM_MEM_H_
11 
12 #define SD_PEIM_MEM_BIT(a)          ((UINTN)(1 << (a)))
13 
14 #define SD_PEIM_MEM_BIT_IS_SET(Data, Bit)   \
15           ((BOOLEAN)(((Data) & SD_PEIM_MEM_BIT(Bit)) == SD_PEIM_MEM_BIT(Bit)))
16 
17 typedef struct _SD_PEIM_MEM_BLOCK SD_PEIM_MEM_BLOCK;
18 
19 struct _SD_PEIM_MEM_BLOCK {
20   UINT8                   *Bits;    // Bit array to record which unit is allocated
21   UINTN                   BitsLen;
22   UINT8                   *Buf;
23   UINT8                   *BufHost;
24   UINTN                   BufLen;   // Memory size in bytes
25   VOID                    *Mapping;
26   SD_PEIM_MEM_BLOCK       *Next;
27 };
28 
29 typedef struct _SD_PEIM_MEM_POOL {
30   SD_PEIM_MEM_BLOCK       *Head;
31 } SD_PEIM_MEM_POOL;
32 
33 //
34 // Memory allocation unit, note that the value must meet SD spec alignment requirement.
35 //
36 #define SD_PEIM_MEM_UNIT           128
37 
38 #define SD_PEIM_MEM_UNIT_MASK      (SD_PEIM_MEM_UNIT - 1)
39 #define SD_PEIM_MEM_DEFAULT_PAGES  16
40 
41 #define SD_PEIM_MEM_ROUND(Len)     (((Len) + SD_PEIM_MEM_UNIT_MASK) & (~SD_PEIM_MEM_UNIT_MASK))
42 
43 //
44 // Advance the byte and bit to the next bit, adjust byte accordingly.
45 //
46 #define SD_PEIM_NEXT_BIT(Byte, Bit)   \
47           do {                \
48             (Bit)++;          \
49             if ((Bit) > 7) {  \
50               (Byte)++;       \
51               (Bit) = 0;      \
52             }                 \
53           } while (0)
54 
55 #endif
56 
57