--- /dev/null
+/** @file\r
+This file contains the definination for host controller memory\r
+management routines.\r
+\r
+Copyright (c) 2013-2015 Intel Corporation.\r
+\r
+This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+**/\r
+\r
+#ifndef _USB_HC_MEM_H_\r
+#define _USB_HC_MEM_H_\r
+\r
+#define USB_HC_BIT(a) ((UINTN)(1 << (a)))\r
+\r
+#define USB_HC_BIT_IS_SET(Data, Bit) \\r
+ ((BOOLEAN)(((Data) & USB_HC_BIT(Bit)) == USB_HC_BIT(Bit)))\r
+\r
+#define USB_HC_HIGH_32BIT(Addr64) \\r
+ ((UINT32)(RShiftU64((UINTN)(Addr64), 32) & 0XFFFFFFFF))\r
+\r
+typedef struct _USBHC_MEM_BLOCK USBHC_MEM_BLOCK;\r
+struct _USBHC_MEM_BLOCK {\r
+ UINT8 *Bits; // Bit array to record which unit is allocated\r
+ UINTN BitsLen;\r
+ UINT8 *Buf;\r
+ UINT8 *BufHost;\r
+ UINTN BufLen; // Memory size in bytes\r
+ VOID *Mapping;\r
+ USBHC_MEM_BLOCK *Next;\r
+};\r
+\r
+//\r
+// USBHC_MEM_POOL is used to manage the memory used by USB\r
+// host controller. EHCI requires the control memory and transfer\r
+// data to be on the same 4G memory.\r
+//\r
+typedef struct _USBHC_MEM_POOL {\r
+ BOOLEAN Check4G;\r
+ UINT32 Which4G;\r
+ USBHC_MEM_BLOCK *Head;\r
+} USBHC_MEM_POOL;\r
+\r
+//\r
+// Memory allocation unit, must be 2^n, n>4\r
+//\r
+#define USBHC_MEM_UNIT 64\r
+\r
+#define USBHC_MEM_UNIT_MASK (USBHC_MEM_UNIT - 1)\r
+#define USBHC_MEM_DEFAULT_PAGES 16\r
+\r
+#define USBHC_MEM_ROUND(Len) (((Len) + USBHC_MEM_UNIT_MASK) & (~USBHC_MEM_UNIT_MASK))\r
+\r
+//\r
+// Advance the byte and bit to the next bit, adjust byte accordingly.\r
+//\r
+#define NEXT_BIT(Byte, Bit) \\r
+ do { \\r
+ (Bit)++; \\r
+ if ((Bit) > 7) { \\r
+ (Byte)++; \\r
+ (Bit) = 0; \\r
+ } \\r
+ } while (0)\r
+\r
+\r
+\r
+/**\r
+ Initialize the memory management pool for the host controller.\r
+\r
+ @param PciIo The PciIo that can be used to access the host controller.\r
+ @param Check4G Whether the host controller requires allocated memory\r
+ from one 4G address space.\r
+ @param Which4G The 4G memory area each memory allocated should be from.\r
+\r
+ @retval EFI_SUCCESS The memory pool is initialized.\r
+ @retval EFI_OUT_OF_RESOURCE Fail to init the memory pool.\r
+\r
+**/\r
+USBHC_MEM_POOL *\r
+UsbHcInitMemPool (\r
+ IN BOOLEAN Check4G,\r
+ IN UINT32 Which4G\r
+ );\r
+\r
+\r
+/**\r
+ Release the memory management pool.\r
+\r
+ @param Pool The USB memory pool to free.\r
+\r
+ @retval EFI_SUCCESS The memory pool is freed.\r
+ @retval EFI_DEVICE_ERROR Failed to free the memory pool.\r
+\r
+**/\r
+EFI_STATUS\r
+UsbHcFreeMemPool (\r
+ IN USBHC_MEM_POOL *Pool\r
+ );\r
+\r
+\r
+/**\r
+ Allocate some memory from the host controller's memory pool\r
+ which can be used to communicate with host controller.\r
+\r
+ @param Pool The host controller's memory pool.\r
+ @param Size Size of the memory to allocate.\r
+\r
+ @return The allocated memory or NULL.\r
+\r
+**/\r
+VOID *\r
+UsbHcAllocateMem (\r
+ IN USBHC_MEM_POOL *Pool,\r
+ IN UINTN Size\r
+ );\r
+\r
+\r
+/**\r
+ Free the allocated memory back to the memory pool.\r
+\r
+ @param Pool The memory pool of the host controller.\r
+ @param Mem The memory to free.\r
+ @param Size The size of the memory to free.\r
+\r
+**/\r
+VOID\r
+UsbHcFreeMem (\r
+ IN USBHC_MEM_POOL *Pool,\r
+ IN VOID *Mem,\r
+ IN UINTN Size\r
+ );\r
+\r
+#endif\r