* FILE: ndis/memory.c
* PURPOSE: Memory management routines
* PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
+ * Vizzini (vizzini@plasmic.com)
* REVISIONS:
* CSH 01/08-2000 Created
+ * 8/15/2003 Vizzini - DMA support
*/
#include <ndissys.h>
-
+#include <miniport.h>
/*
* @implemented
* VirtualAddress = a pointer to the returned memory block
* Length = the number of requested bytes
* Tag = 32-bit pool tag
- * NOTES:
- * NDIS 5.0
+ * RETURNS:
+ * NDIS_STATUS_SUCCESS on success
+ * NDIS_STATUS_FAILURE on failure
*/
{
- PVOID Block;
+ PVOID Block;
- /* Plain nonpaged memory with tag */
- Block = ExAllocatePoolWithTag(NonPagedPool, Length, Tag);
- *VirtualAddress = Block;
- if (!Block)
- return NDIS_STATUS_FAILURE;
+ NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
+ Block = ExAllocatePoolWithTag(NonPagedPool, Length, Tag);
+ *VirtualAddress = Block;
- return NDIS_STATUS_SUCCESS;
+ if (!Block)
+ return NDIS_STATUS_FAILURE;
+
+ return NDIS_STATUS_SUCCESS;
}
/*
- * @unimplemented
+ * @implemented
*/
NDIS_STATUS
EXPORT
* Length = Size of the memory block to allocate
* MemoryFlags = Flags to specify special restrictions
* HighestAcceptableAddress = Specifies -1
+ * RETURNS:
+ * NDIS_STATUS_SUCCESS on success
+ * NDIS_STATUS_FAILURE on failure
*/
{
+ NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
if (MemoryFlags & NDIS_MEMORY_NONCACHED)
{
*VirtualAddress = MmAllocateNonCachedMemory(Length);
/*
- * @unimplemented
+ * @implemented
*/
VOID
EXPORT
* MemoryFlags = Memory flags passed to NdisAllocateMemory
*/
{
+ NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
if (MemoryFlags & NDIS_MEMORY_NONCACHED)
{
MmFreeNonCachedMemory(VirtualAddress, Length);
/*
- * @unimplemented
+ * @implemented
*/
VOID
EXPORT
IN BOOLEAN Cached,
OUT PVOID *VirtualAddress,
OUT PNDIS_PHYSICAL_ADDRESS PhysicalAddress)
+/*
+ * FUNCTION: Allocate a common buffer for DMA
+ * ARGUMENTS:
+ * MiniportAdapterHandle: Handle passed into MiniportInitialize
+ * Length: Number of bytes to allocate
+ * Cached: Whether or not the memory can be cached
+ * VirtualAddress: Pointer to memory is returned here
+ * PhysicalAddress: Physical address corresponding to virtual address
+ * NOTES:
+ * - Cached is ignored; we always allocate non-cached
+ */
{
- UNIMPLEMENTED
+ PLOGICAL_ADAPTER Adapter = (PLOGICAL_ADAPTER)MiniportAdapterHandle;
+
+ NDIS_DbgPrint(MAX_TRACE,("Called.\n"));
+
+ *VirtualAddress = HalAllocateCommonBuffer(Adapter->AdapterObject, Length, PhysicalAddress, Cached);
}
IN BOOLEAN Cached,
IN PVOID Context)
{
+ NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
UNIMPLEMENTED
return NDIS_STATUS_FAILURE;
}
+/*
+ * @implemented
+ */
+VOID
+STDCALL
+NdisMFreeSharedMemoryPassive(
+ PVOID Context)
+/*
+ * FUNCTION: Free a common buffer
+ * ARGUMENTS:
+ * Context: Pointer to a miniport shared memory context
+ * NOTES:
+ * - Called by NdisMFreeSharedMemory to do the actual work
+ */
+{
+ PMINIPORT_SHARED_MEMORY Memory = (PMINIPORT_SHARED_MEMORY)Context;
+
+ NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
+ ASSERT(KeGetCurrentIrql() == PASSIVE_LEVEL);
+
+ HalFreeCommonBuffer(Memory->AdapterObject, Memory->Length, Memory->PhysicalAddress,
+ Memory->VirtualAddress, Memory->Cached);
+
+ ExFreePool(Memory);
+}
+
/*
- * @unimplemented
+ * @implemented
*/
VOID
EXPORT
IN BOOLEAN Cached,
IN PVOID VirtualAddress,
IN NDIS_PHYSICAL_ADDRESS PhysicalAddress)
+/*
+ * FUNCTION: Free a shared memory block
+ * ARGUMENTS:
+ * MiniportAdapterHandle: Handle passed into MiniportInitialize
+ * Length: Number of bytes in the block to free
+ * Cached: Whether or not the memory was cached
+ * VirtualAddress: Address to free
+ * PhysicalAddress: corresponding physical addres
+ * NOTES:
+ * - This function can be called at dispatch_level or passive_level.
+ * Therefore we have to do this in a worker thread.
+ */
{
- UNIMPLEMENTED
+ HANDLE ThreadHandle;
+ PLOGICAL_ADAPTER Adapter = (PLOGICAL_ADAPTER)MiniportAdapterHandle;
+ PMINIPORT_SHARED_MEMORY Memory;
+
+ NDIS_DbgPrint(MAX_TRACE,("Called.\n"));
+
+ ASSERT(KeGetCurrentIrql() <= DISPATCH_LEVEL);
+
+ /* Must be NonpagedPool because by definition we're at DISPATCH_LEVEL */
+ Memory = ExAllocatePool(NonPagedPool, sizeof(MINIPORT_SHARED_MEMORY));
+
+ if(!Memory)
+ {
+ NDIS_DbgPrint(MID_TRACE, ("Insufficient resources\n"));
+ return;
+ }
+
+ Memory->AdapterObject = Adapter->AdapterObject;
+ Memory->Length = Length;
+ Memory->PhysicalAddress = PhysicalAddress;
+ Memory->VirtualAddress = VirtualAddress;
+ Memory->Cached = Cached;
+
+ PsCreateSystemThread(&ThreadHandle, THREAD_ALL_ACCESS, 0, 0, 0, NdisMFreeSharedMemoryPassive, Memory);
+ ZwClose(ThreadHandle);
}
/* EOF */
+