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- Set the MAP_BASE_SW_SG flag for map registers in IoFreeMapRegisters.

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- Fix address calculation in HalpCopyBufferMap.
- Correctly set the map register counter in IoMapTransfer if dealing with MAP_BASE_SW_SG map registers.

svn path=/trunk/; revision=17629
This commit is contained in:
Filip Navara 2005-09-04 10:02:19 +00:00
parent adb5d8466f
commit 3a10e56852
1 changed files with 15 additions and 3 deletions
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18
reactos/hal/halx86/generic/dma.c
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@ -1402,6 +1402,13 @@ IoFreeMapRegisters(
AdapterObject->MapRegisterBase =
MasterAdapter->MapRegisterBase + Index;
if (!AdapterObject->ScatterGather)
{
AdapterObject->MapRegisterBase =
(PMAP_REGISTER_ENTRY)(
(ULONG_PTR)AdapterObject->MapRegisterBase |
MAP_BASE_SW_SG);
}
Result = ((PDRIVER_CONTROL)AdapterObject->CurrentWcb->DeviceRoutine)(
AdapterObject->CurrentWcb->DeviceObject,
@ -1471,7 +1478,8 @@ HalpCopyBufferMap(
KEBUGCHECK(0);
}
CurrentAddress = (ULONG_PTR)CurrentVa -
CurrentAddress = (ULONG_PTR)VirtualAddress +
(ULONG_PTR)CurrentVa -
(ULONG_PTR)MmGetMdlVirtualAddress(Mdl);
while (Length > 0)
@ -1583,7 +1591,7 @@ IoFlushAdapterBuffers(
Length -= HalReadDmaCounter(AdapterObject);
}
HalpCopyBufferMap(Mdl, RealMapRegisterBase, CurrentVa, Length, 0);
HalpCopyBufferMap(Mdl, RealMapRegisterBase, CurrentVa, Length, FALSE);
}
else
{
@ -1763,7 +1771,7 @@ IoMapTransfer(
RealMapRegisterBase->Counter += BYTES_TO_PAGES(ByteOffset + TransferLength);
/*
* Check if the buffer doesn't exceed the highest phisical address
* Check if the buffer doesn't exceed the highest physical address
* limit of the device. In that case we must use the map registers to
* store the data.
*/
@ -1775,6 +1783,10 @@ IoMapTransfer(
UseMapRegisters = TRUE;
PhysicalAddress = RealMapRegisterBase->PhysicalAddress;
PhysicalAddress.QuadPart += ByteOffset;
if ((ULONG_PTR)MapRegisterBase & MAP_BASE_SW_SG)
{
RealMapRegisterBase->Counter = ~0;
}
}
}