SdHcMem.h

Go to the documentation of this file.

 
#ifndef _SD_PEIM_MEM_H_
#define _SD_PEIM_MEM_H_
 
#define SD_PEIM_MEM_BIT(a)  ((UINTN)(1 << (a)))
 
#define SD_PEIM_MEM_BIT_IS_SET(Data, Bit)   \
          ((BOOLEAN)(((Data) & SD_PEIM_MEM_BIT(Bit)) == SD_PEIM_MEM_BIT(Bit)))
 
typedef struct _SD_PEIM_MEM_BLOCK SD_PEIM_MEM_BLOCK;
 
struct _SD_PEIM_MEM_BLOCK {
  UINT8                *Bits;       // Bit array to record which unit is allocated
  UINTN                BitsLen;
  UINT8                *Buf;
  UINT8                *BufHost;
  UINTN                BufLen;      // Memory size in bytes
  VOID                 *Mapping;
  SD_PEIM_MEM_BLOCK    *Next;
};
 
typedef struct _SD_PEIM_MEM_POOL {
  SD_PEIM_MEM_BLOCK    *Head;
} SD_PEIM_MEM_POOL;
 
//
// Memory allocation unit, note that the value must meet SD spec alignment requirement.
//
#define SD_PEIM_MEM_UNIT  128
 
#define SD_PEIM_MEM_UNIT_MASK      (SD_PEIM_MEM_UNIT - 1)
#define SD_PEIM_MEM_DEFAULT_PAGES  16
 
#define SD_PEIM_MEM_ROUND(Len)  (((Len) + SD_PEIM_MEM_UNIT_MASK) & (~SD_PEIM_MEM_UNIT_MASK))
 
//
// Advance the byte and bit to the next bit, adjust byte accordingly.
//
#define SD_PEIM_NEXT_BIT(Byte, Bit)   \
          do {                \
            (Bit)++;          \
            if ((Bit) > 7) {  \
              (Byte)++;       \
              (Bit) = 0;      \
            }                 \
          } while (0)
 
#endif