UsbHcMem.h

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#ifndef _EFI_PEI_XHCI_MEM_H_
#define _EFI_PEI_XHCI_MEM_H_
 
#include <Uefi.h>
 
#define USBHC_MEM_DEFAULT_PAGES  16
 
typedef struct _USBHC_MEM_BLOCK USBHC_MEM_BLOCK;
 
struct _USBHC_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;
  USBHC_MEM_BLOCK    *Next;
};
 
//
// Memory allocation unit, must be 2^n, n>4
//
#define USBHC_MEM_UNIT  64
 
#define USBHC_MEM_UNIT_MASK  (USBHC_MEM_UNIT - 1)
#define USBHC_MEM_ROUND(Len)  (((Len) + USBHC_MEM_UNIT_MASK) & (~USBHC_MEM_UNIT_MASK))
 
#define USB_HC_BIT(a)  ((UINTN)(1 << (a)))
 
#define USB_HC_BIT_IS_SET(Data, Bit)   \
          ((BOOLEAN)(((Data) & USB_HC_BIT(Bit)) == USB_HC_BIT(Bit)))
 
//
// Advance the byte and bit to the next bit, adjust byte accordingly.
//
#define NEXT_BIT(Byte, Bit)  \
          do {               \
            (Bit)++;         \
            if ((Bit) > 7) { \
              (Byte)++;      \
              (Bit) = 0;     \
            }                \
          } while (0)
 
//
// USBHC_MEM_POOL is used to manage the memory used by USB
// host controller. XHCI requires the control memory and transfer
// data to be on the same 4G memory.
//
typedef struct _USBHC_MEM_POOL {
  BOOLEAN            Check4G;
  UINT32             Which4G;
  USBHC_MEM_BLOCK    *Head;
} USBHC_MEM_POOL;
 
EFI_PHYSICAL_ADDRESS
UsbHcGetPciAddrForHostAddr (
  IN USBHC_MEM_POOL  *Pool,
  IN VOID            *Mem,
  IN UINTN           Size,
  IN BOOLEAN         Alignment
  );
 
EFI_PHYSICAL_ADDRESS
UsbHcGetHostAddrForPciAddr (
  IN USBHC_MEM_POOL  *Pool,
  IN VOID            *Mem,
  IN UINTN           Size,
  IN BOOLEAN         Alignment
  );
 
EFI_STATUS
UsbHcAllocateAlignedPages (
  IN UINTN                  Pages,
  IN UINTN                  Alignment,
  OUT VOID                  **HostAddress,
  OUT EFI_PHYSICAL_ADDRESS  *DeviceAddress,
  OUT VOID                  **Mapping
  );
 
VOID
UsbHcFreeAlignedPages (
  IN VOID   *HostAddress,
  IN UINTN  Pages,
  IN VOID   *Mapping
  );
 
#endif