[cgutman] 54016: [HAL] - Implement support for scatter/gather DMA - Tested with Intel's NDIS 5.1 PRO/1000 driver (but more testing would be helpful to weed out bugs) [NDIS] - Report NDIS 5.1 now si...
5 Oct
2011
5 Oct
'11
8:36 p.m.
Author: cgutman
Date: Wed Oct 5 20:36:20 2011
New Revision: 54016
URL: http://svn.reactos.org/svn/reactos?rev=54016&view=rev
Log:
[HAL]
- Implement support for scatter/gather DMA
- Tested with Intel's NDIS 5.1 PRO/1000 driver (but more testing would be helpful to
weed out bugs)
[NDIS]
- Report NDIS 5.1 now since S/G DMA is supported
- Stop warning when S/G DMA is used
Modified:
trunk/reactos/drivers/network/ndis/include/ndissys.h
trunk/reactos/drivers/network/ndis/ndis/protocol.c
trunk/reactos/hal/halx86/generic/dma.c
Modified: trunk/reactos/drivers/network/ndis/include/ndissys.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/network/ndis/inclu…
==============================================================================
--- trunk/reactos/drivers/network/ndis/include/ndissys.h [iso-8859-1] (original)
+++ trunk/reactos/drivers/network/ndis/include/ndissys.h [iso-8859-1] Wed Oct 5 20:36:20
2011
@@ -30,7 +30,7 @@
#endif
/* the version of NDIS we claim to be */
-#define NDIS_VERSION 0x00050000
+#define NDIS_VERSION 0x00050001
#define NDIS_TAG 0x4e4d4953
Modified: trunk/reactos/drivers/network/ndis/ndis/protocol.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/network/ndis/ndis/…
==============================================================================
--- trunk/reactos/drivers/network/ndis/ndis/protocol.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/network/ndis/ndis/protocol.c [iso-8859-1] Wed Oct 5 20:36:20
2011
@@ -516,7 +516,7 @@
} else {
if (Adapter->NdisMiniportBlock.ScatterGatherListSize != 0)
{
- NDIS_DbgPrint(MIN_TRACE, ("Using Scatter/Gather DMA\n"));
+ NDIS_DbgPrint(MID_TRACE, ("Using Scatter/Gather DMA\n"));
NdisQueryPacket(Packet,
NULL,
Modified: trunk/reactos/hal/halx86/generic/dma.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/hal/halx86/generic/dma.c?r…
==============================================================================
--- trunk/reactos/hal/halx86/generic/dma.c [iso-8859-1] (original)
+++ trunk/reactos/hal/halx86/generic/dma.c [iso-8859-1] Wed Oct 5 20:36:20 2011
@@ -74,6 +74,8 @@
#include <hal.h>
#define NDEBUG
#include <debug.h>
+
+#define MAX_SG_ELEMENTS 0x10
#ifndef _MINIHAL_
static KEVENT HalpDmaLock;
@@ -110,8 +112,8 @@
(PGET_DMA_ALIGNMENT)HalpDmaGetDmaAlignment,
(PREAD_DMA_COUNTER)HalReadDmaCounter,
/* FIXME: Implement the S/G funtions. */
- NULL /*(PGET_SCATTER_GATHER_LIST)HalGetScatterGatherList*/,
- NULL /*(PPUT_SCATTER_GATHER_LIST)HalPutScatterGatherList*/,
+ (PGET_SCATTER_GATHER_LIST)HalGetScatterGatherList,
+ (PPUT_SCATTER_GATHER_LIST)HalPutScatterGatherList,
NULL /*(PCALCULATE_SCATTER_GATHER_LIST_SIZE)HalCalculateScatterGatherListSize*/,
NULL /*(PBUILD_SCATTER_GATHER_LIST)HalBuildScatterGatherList*/,
NULL /*(PBUILD_MDL_FROM_SCATTER_GATHER_LIST)HalBuildMdlFromScatterGatherList*/
@@ -907,6 +909,192 @@
MmFreeContiguousMemorySpecifyCache(VirtualAddress,
Length,
CacheEnabled ? MmCached : MmNonCached);
+}
+
+typedef struct _SCATTER_GATHER_CONTEXT {
+ PADAPTER_OBJECT AdapterObject;
+ PMDL Mdl;
+ PUCHAR CurrentVa;
+ ULONG Length;
+ PDRIVER_LIST_CONTROL AdapterListControlRoutine;
+ PVOID AdapterListControlContext, MapRegisterBase;
+ ULONG MapRegisterCount;
+ BOOLEAN WriteToDevice;
+} SCATTER_GATHER_CONTEXT, *PSCATTER_GATHER_CONTEXT;
+
+
+IO_ALLOCATION_ACTION
+NTAPI
+HalpScatterGatherAdapterControl(IN PDEVICE_OBJECT DeviceObject,
+ IN PIRP Irp,
+ IN PVOID MapRegisterBase,
+ IN PVOID Context)
+{
+ PSCATTER_GATHER_CONTEXT AdapterControlContext = Context;
+ PADAPTER_OBJECT AdapterObject = AdapterControlContext->AdapterObject;
+ PSCATTER_GATHER_LIST ScatterGatherList;
+ SCATTER_GATHER_ELEMENT TempElements[MAX_SG_ELEMENTS];
+ ULONG ElementCount = 0, RemainingLength = AdapterControlContext->Length;
+ PUCHAR CurrentVa = AdapterControlContext->CurrentVa;
+
+ /* Store the map register base for later in HalPutScatterGatherList */
+ AdapterControlContext->MapRegisterBase = MapRegisterBase;
+
+ while (RemainingLength > 0 && ElementCount < MAX_SG_ELEMENTS)
+ {
+ TempElements[ElementCount].Length = RemainingLength;
+ TempElements[ElementCount].Reserved = 0;
+ TempElements[ElementCount].Address = IoMapTransfer(AdapterObject,
+ AdapterControlContext->Mdl,
+ MapRegisterBase,
+ CurrentVa + (AdapterControlContext->Length - RemainingLength),
+ &TempElements[ElementCount].Length,
+ AdapterControlContext->WriteToDevice);
+ if (TempElements[ElementCount].Length == 0)
+ break;
+
+ DPRINT("Allocated one S/G element: 0x%I64u with length: 0x%x\n",
+ TempElements[ElementCount].Address.QuadPart,
+ TempElements[ElementCount].Length);
+
+ ASSERT(TempElements[ElementCount].Length <= RemainingLength);
+ RemainingLength -= TempElements[ElementCount].Length;
+ ElementCount++;
+ }
+
+ if (RemainingLength > 0)
+ {
+ DPRINT1("Scatter/gather list construction failed!\n");
+ return DeallocateObject;
+ }
+
+ ScatterGatherList = ExAllocatePoolWithTag(NonPagedPool,
+ sizeof(SCATTER_GATHER_LIST) +
sizeof(SCATTER_GATHER_ELEMENT) * ElementCount,
+ TAG_DMA);
+ ASSERT(ScatterGatherList);
+
+ ScatterGatherList->NumberOfElements = ElementCount;
+ ScatterGatherList->Reserved = (ULONG_PTR)AdapterControlContext;
+ RtlCopyMemory(ScatterGatherList->Elements,
+ TempElements,
+ sizeof(SCATTER_GATHER_ELEMENT) * ElementCount);
+
+ DPRINT("Initiating S/G DMA with %d element(s)\n", ElementCount);
+
+ AdapterControlContext->AdapterListControlRoutine(DeviceObject,
+ Irp,
+ ScatterGatherList,
+ AdapterControlContext->AdapterListControlContext);
+
+ return DeallocateObjectKeepRegisters;
+}
+
+/**
+ * @name HalGetScatterGatherList
+ *
+ * Creates a scatter-gather list to be using in scatter/gather DMA
+ *
+ * @param AdapterObject
+ * Adapter object representing the bus master or system dma controller.
+ * @param DeviceObject
+ * The device target for DMA.
+ * @param Mdl
+ * The MDL that describes the buffer to be mapped.
+ * @param CurrentVa
+ * The current VA in the buffer to be mapped for transfer.
+ * @param Length
+ * Specifies the length of data in bytes to be mapped.
+ * @param ExecutionRoutine
+ * A caller supplied AdapterListControl routine to be called when DMA is
available.
+ * @param Context
+ * Context passed to the AdapterListControl routine.
+ * @param WriteToDevice
+ * Indicates direction of DMA operation.
+ *
+ * @return The status of the operation.
+ *
+ * @see HalPutScatterGatherList
+ *
+ * @implemented
+ */
+ NTSTATUS
+ NTAPI
+ HalGetScatterGatherList(IN PADAPTER_OBJECT AdapterObject,
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PMDL Mdl,
+ IN PVOID CurrentVa,
+ IN ULONG Length,
+ IN PDRIVER_LIST_CONTROL ExecutionRoutine,
+ IN PVOID Context,
+ IN BOOLEAN WriteToDevice)
+{
+ PSCATTER_GATHER_CONTEXT AdapterControlContext;
+
+ AdapterControlContext = ExAllocatePoolWithTag(NonPagedPool,
sizeof(SCATTER_GATHER_CONTEXT), TAG_DMA);
+ if (!AdapterControlContext) return STATUS_INSUFFICIENT_RESOURCES;
+
+ AdapterControlContext->AdapterObject = AdapterObject;
+ AdapterControlContext->Mdl = Mdl;
+ AdapterControlContext->CurrentVa = CurrentVa;
+ AdapterControlContext->Length = Length;
+ AdapterControlContext->MapRegisterCount = PAGE_ROUND_UP(Length) >> PAGE_SHIFT;
+ AdapterControlContext->AdapterListControlRoutine = ExecutionRoutine;
+ AdapterControlContext->AdapterListControlContext = Context;
+ AdapterControlContext->WriteToDevice = WriteToDevice;
+
+ return IoAllocateAdapterChannel(AdapterObject,
+ DeviceObject,
+ AdapterControlContext->MapRegisterCount,
+ HalpScatterGatherAdapterControl,
+ AdapterControlContext);
+}
+
+/**
+ * @name HalPutScatterGatherList
+ *
+ * Frees a scatter-gather list allocated from HalGetScatterGatherList
+ *
+ * @param AdapterObject
+ * Adapter object representing the bus master or system dma controller.
+ * @param ScatterGather
+ * The scatter/gather list to be freed.
+ * @param WriteToDevice
+ * Indicates direction of DMA operation.
+ *
+ * @return None
+ *
+ * @see HalGetScatterGatherList
+ *
+ * @implemented
+ */
+ VOID
+ NTAPI
+ HalPutScatterGatherList(IN PADAPTER_OBJECT AdapterObject,
+ IN PSCATTER_GATHER_LIST ScatterGather,
+ IN BOOLEAN WriteToDevice)
+{
+ PSCATTER_GATHER_CONTEXT AdapterControlContext =
(PSCATTER_GATHER_CONTEXT)ScatterGather->Reserved;
+ ULONG i;
+
+ for (i = 0; i < ScatterGather->NumberOfElements; i++)
+ {
+ IoFlushAdapterBuffers(AdapterObject,
+ AdapterControlContext->Mdl,
+ AdapterControlContext->MapRegisterBase,
+ AdapterControlContext->CurrentVa,
+ ScatterGather->Elements[i].Length,
+ AdapterControlContext->WriteToDevice);
+ AdapterControlContext->CurrentVa += ScatterGather->Elements[i].Length;
+ }
+
+ IoFreeMapRegisters(AdapterObject,
+ AdapterControlContext->MapRegisterBase,
+ AdapterControlContext->MapRegisterCount);
+
+ DPRINT("S/G DMA has finished!\n");
+
+ ExFreePoolWithTag(AdapterControlContext, TAG_DMA);
+ ExFreePoolWithTag(ScatterGather, TAG_DMA);
}
#endif
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