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update code to eliminate the wrong assumption that pci address is equal to host address in all archs.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9339 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
eric_tian
2009-10-14 06:22:49 +00:00
parent 62b658dd7f
commit 739802e49c
6 changed files with 126 additions and 32 deletions
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44
MdeModulePkg/Bus/Pci/EhciDxe/UsbHcMem.c
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@@ -221,6 +221,50 @@ UsbHcAllocMemFromBlock (
return Block->Buf + (StartByte * 8 + StartBit) * USBHC_MEM_UNIT;
}
/**
Get the pci memory address according to the allocated host memory address.
@param Pool The memory pool of the host controller.
@param Mem The memory to free.
@param Size The size of the memory to free.
@return the pci memory address
**/
EFI_PHYSICAL_ADDRESS
UsbHcGetPciAddressForHostMem (
IN USBHC_MEM_POOL *Pool,
IN VOID *Mem,
IN UINTN Size
)
{
USBHC_MEM_BLOCK *Head;
USBHC_MEM_BLOCK *Block;
UINTN AllocSize;
EFI_PHYSICAL_ADDRESS PhyAddr;
UINTN Offset;
Head = Pool->Head;
AllocSize = USBHC_MEM_ROUND (Size);
for (Block = Head; Block != NULL; Block = Block->Next) {
//
// scan the memory block list for the memory block that
// completely contains the allocated memory.
//
if ((Block->Buf <= (UINT8 *) Mem) && (((UINT8 *) Mem + AllocSize) <= (Block->Buf + Block->BufLen))) {
break;
}
}
ASSERT ((Block != NULL));
//
// calculate the pci memory address for host memory address.
//
Offset = (UINT8 *)Mem - Block->BufHost;
PhyAddr = (EFI_PHYSICAL_ADDRESS)(Block->Buf + Offset);
return PhyAddr;
}
/**
Insert the memory block to the pool's list of the blocks.