1 files changed, 86 insertions, 0 deletions
diff --git a/roms/edk2/MdeModulePkg/Bus/Pci/EhciPei/UsbHcMem.h b/roms/edk2/MdeModulePkg/Bus/Pci/EhciPei/UsbHcMem.h
new file mode 100644
index 000000000..21b2d7fa9
--- /dev/null
+++ b/roms/edk2/MdeModulePkg/Bus/Pci/EhciPei/UsbHcMem.h
@@ -0,0 +1,86 @@
+/** @file
+Private Header file for Usb Host Controller PEIM
+
+Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef _EFI_EHCI_MEM_H_
+#define _EFI_EHCI_MEM_H_
+
+#include <Uefi.h>
+#include <IndustryStandard/Pci22.h>
+
+#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)))
+
+#define USB_HC_HIGH_32BIT(Addr64)    \
+          ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0XFFFFFFFF))
+
+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;
+};
+
+//
+// USBHC_MEM_POOL is used to manage the memory used by USB
+// host controller. EHCI 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;
+
+//
+// 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_DEFAULT_PAGES  16
+
+#define USBHC_MEM_ROUND(Len)  (((Len) + USBHC_MEM_UNIT_MASK) & (~USBHC_MEM_UNIT_MASK))
+
+//
+// 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)
+
+
+/**
+  Calculate the corresponding pci bus address according to the Mem parameter.
+
+  @param  Pool           The memory pool of the host controller.
+  @param  Mem            The pointer to host memory.
+  @param  Size           The size of the memory region.
+
+  @return the pci memory address
+**/
+EFI_PHYSICAL_ADDRESS
+UsbHcGetPciAddressForHostMem (
+  IN USBHC_MEM_POOL       *Pool,
+  IN VOID                 *Mem,
+  IN UINTN                Size
+  );
+
+#endif