MdeModulePkg/Bus/Sd/SdBlockIoPei/SdHcMem.h

   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