/** @file\r
\r
-Copyright (c) 2007, Intel Corporation\r
+ The routine procedure for uhci memory allocate/free.\r
+\r
+Copyright (c) 2007 - 2010, Intel Corporation\r
All rights reserved. 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
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
-Module Name:\r
-\r
- EhciMem.c\r
-\r
-Abstract:\r
-\r
-\r
-Revision History\r
-\r
**/\r
\r
#include "Uhci.h"\r
\r
\r
-UINTN mUsbHcDebugLevel = DEBUG_INFO;\r
-\r
-\r
/**\r
- Allocate a block of memory to be used by the buffer pool\r
+ Allocate a block of memory to be used by the buffer pool.\r
\r
- @param Pool The buffer pool to allocate memory for\r
- @param Pages How many pages to allocate\r
+ @param Pool The buffer pool to allocate memory for.\r
+ @param Pages How many pages to allocate.\r
\r
- @return The allocated memory block or NULL if failed\r
+ @return The allocated memory block or NULL if failed.\r
\r
**/\r
-STATIC\r
USBHC_MEM_BLOCK *\r
UsbHcAllocMemBlock (\r
IN USBHC_MEM_POOL *Pool,\r
Block->Buf = (UINT8 *) ((UINTN) MappedAddr);\r
Block->Mapping = Mapping;\r
\r
- DEBUG ((mUsbHcDebugLevel, "UsbHcAllocMemBlock: block %x created with buffer %x\n",\r
- Block, Block->Buf));\r
-\r
return Block;\r
\r
FREE_BUFFER:\r
\r
\r
/**\r
- Free the memory block from the memory pool\r
+ Free the memory block from the memory pool.\r
\r
- @param Pool The memory pool to free the block from\r
- @param Block The memory block to free\r
-\r
- @return VOID\r
+ @param Pool The memory pool to free the block from.\r
+ @param Block The memory block to free.\r
\r
**/\r
-STATIC\r
VOID\r
UsbHcFreeMemBlock (\r
IN USBHC_MEM_POOL *Pool,\r
\r
\r
/**\r
- Alloc some memory from the block\r
+ Alloc some memory from the block.\r
\r
- @param Block The memory block to allocate memory from\r
- @param Mem The variable to store the memory allocated\r
- @param Units Number of memory units to allocate\r
+ @param Block The memory block to allocate memory from.\r
+ @param Units Number of memory units to allocate.\r
\r
- @return EFI_SUCCESS : The needed memory is allocated\r
- @return EFI_NOT_FOUND : Can't find the free memory\r
+ @return EFI_SUCCESS The needed memory is allocated.\r
+ @return EFI_NOT_FOUND Can't find the free memory.\r
\r
**/\r
-STATIC\r
VOID *\r
UsbHcAllocMemFromBlock (\r
IN USBHC_MEM_BLOCK *Block,\r
for (Count = 0; Count < Units; Count++) {\r
ASSERT (!USB_HC_BIT_IS_SET (Block->Bits[Byte], Bit));\r
\r
- Block->Bits[Byte] |= USB_HC_BIT (Bit);\r
+ Block->Bits[Byte] = (UINT8) (Block->Bits[Byte] | (UINT8) USB_HC_BIT (Bit));\r
NEXT_BIT (Byte, Bit);\r
}\r
\r
return Block->Buf + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;\r
}\r
\r
-\r
/**\r
- Insert the memory block to the pool's list of the blocks\r
+ Calculate the corresponding pci bus address according to the Mem parameter.\r
\r
- @param Head The head of the memory pool's block list\r
- @param Block The memory block to insert\r
+ @param Pool The memory pool of the host controller.\r
+ @param Mem The pointer to host memory.\r
+ @param Size The size of the memory region.\r
\r
- @return VOID\r
+ @return the pci memory address\r
+**/\r
+EFI_PHYSICAL_ADDRESS\r
+UsbHcGetPciAddressForHostMem (\r
+ IN USBHC_MEM_POOL *Pool,\r
+ IN VOID *Mem,\r
+ IN UINTN Size\r
+ )\r
+{\r
+ USBHC_MEM_BLOCK *Head;\r
+ USBHC_MEM_BLOCK *Block;\r
+ UINTN AllocSize;\r
+ EFI_PHYSICAL_ADDRESS PhyAddr;\r
+ UINTN Offset;\r
+\r
+ Head = Pool->Head;\r
+ AllocSize = USBHC_MEM_ROUND (Size);\r
+\r
+ if (Mem == NULL) {\r
+ return 0;\r
+ }\r
+\r
+ for (Block = Head; Block != NULL; Block = Block->Next) {\r
+ //\r
+ // scan the memory block list for the memory block that\r
+ // completely contains the allocated memory.\r
+ //\r
+ if ((Block->BufHost <= (UINT8 *) Mem) && (((UINT8 *) Mem + AllocSize) <= (Block->BufHost + Block->BufLen))) {\r
+ break;\r
+ }\r
+ }\r
+\r
+ ASSERT ((Block != NULL));\r
+ //\r
+ // calculate the pci memory address for host memory address.\r
+ //\r
+ Offset = (UINT8 *)Mem - Block->BufHost;\r
+ PhyAddr = (EFI_PHYSICAL_ADDRESS)(UINTN) (Block->Buf + Offset);\r
+ return PhyAddr;\r
+}\r
+\r
+/**\r
+ Insert the memory block to the pool's list of the blocks.\r
+\r
+ @param Head The head of the memory pool's block list.\r
+ @param Block The memory block to insert.\r
\r
**/\r
-STATIC\r
VOID\r
UsbHcInsertMemBlockToPool (\r
IN USBHC_MEM_BLOCK *Head,\r
/**\r
Is the memory block empty?\r
\r
- @param Block The memory block to check\r
+ @param Block The memory block to check.\r
\r
- @return TRUE : The memory block is empty\r
- @return FALSE : The memory block isn't empty\r
+ @return TRUE The memory block is empty.\r
+ @return FALSE The memory block isn't empty.\r
\r
**/\r
-STATIC\r
BOOLEAN\r
UsbHcIsMemBlockEmpty (\r
IN USBHC_MEM_BLOCK *Block\r
\r
\r
/**\r
- Unlink the memory block from the pool's list\r
+ Unlink the memory block from the pool's list.\r
\r
- @param Head The block list head of the memory's pool\r
+ @param Head The block list head of the memory's pool.\r
@param BlockToUnlink The memory block to unlink.\r
\r
- @return VOID\r
-\r
**/\r
-STATIC\r
VOID\r
UsbHcUnlinkMemBlock (\r
IN USBHC_MEM_BLOCK *Head,\r
\r
\r
/**\r
- Initialize the memory management pool for the host controller\r
+ Initialize the memory management pool for the host controller.\r
\r
- @param Pool The USB memory pool to initialize\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
+ @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
- @return EFI_SUCCESS : The memory pool is initialized\r
- @return EFI_OUT_OF_RESOURCE : Fail to init the memory pool\r
+ @return EFI_SUCCESS The memory pool is initialized.\r
+ @return EFI_OUT_OF_RESOURCE Fail to init the memory pool.\r
\r
**/\r
USBHC_MEM_POOL *\r
\r
\r
/**\r
- Release the memory management pool\r
+ Release the memory management pool.\r
\r
- @param Pool The USB memory pool to free\r
+ @param Pool The USB memory pool to free.\r
\r
- @return EFI_SUCCESS : The memory pool is freed\r
- @return EFI_DEVICE_ERROR : Failed to free the memory pool\r
+ @return EFI_SUCCESS The memory pool is freed.\r
+ @return EFI_DEVICE_ERROR Failed to free the memory pool.\r
\r
**/\r
EFI_STATUS\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
+ @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
+ @return The allocated memory or NULL.\r
\r
**/\r
VOID *\r
NewBlock = UsbHcAllocMemBlock (Pool, Pages);\r
\r
if (NewBlock == NULL) {\r
- DEBUG ((mUsbHcDebugLevel, "UsbHcAllocateMem: failed to allocate block\n"));\r
+ DEBUG ((EFI_D_INFO, "UsbHcAllocateMem: failed to allocate block\n"));\r
return NULL;\r
}\r
\r
\r
\r
/**\r
- Free the allocated memory back to the memory pool\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
- @return VOID\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
// Release the current memory block if it is empty and not the head\r
//\r
if ((Block != Head) && UsbHcIsMemBlockEmpty (Block)) {\r
- DEBUG ((mUsbHcDebugLevel, "UsbHcFreeMem: block %x is empty, recycle\n", Block));\r
-\r
UsbHcUnlinkMemBlock (Head, Block);\r
UsbHcFreeMemBlock (Pool, Block);\r
}\r
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