added NdisMAllocateSharedMemory and NdisMFreeSharedMemory and fixed a couple minor bugs

svn path=/trunk/; revision=5980

reactos/drivers/net/ndis/ndis/memory.c

@@ -4,11 +4,13 @@
  * 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
@@ -25,15 +27,18 @@ NdisAllocateMemoryWithTag(
  *   VirtualAddress = a pointer to the returned memory block
  *   Length         = the number of requested bytes
  *   Tag            = 32-bit pool tag 
- * NOTES:
+ * RETURNS:  
- *    NDIS 5.0
+ *   NDIS_STATUS_SUCCESS on success
+ *   NDIS_STATUS_FAILURE on failure
  */
 {
   PVOID Block;
 
-    /* Plain nonpaged memory with tag */
+  NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
   Block = ExAllocatePoolWithTag(NonPagedPool, Length, Tag);
   *VirtualAddress = Block;
+
   if (!Block)
     return NDIS_STATUS_FAILURE;
 
@@ -125,7 +130,7 @@ NdisMUpdateSharedMemory(
 
 
 /*
- * @unimplemented
+ * @implemented
  */
 NDIS_STATUS
 EXPORT
@@ -142,8 +147,13 @@ NdisAllocateMemory(
  *     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);
@@ -172,7 +182,7 @@ NdisAllocateMemory(
 
 
 /*
- * @unimplemented
+ * @implemented
  */
 VOID
 EXPORT
@@ -188,6 +198,8 @@ NdisFreeMemory(
  *     MemoryFlags    = Memory flags passed to NdisAllocateMemory
  */
 {
+  NDIS_DbgPrint(MAX_TRACE, ("Called.\n"));
+
   if (MemoryFlags & NDIS_MEMORY_NONCACHED) 
     {
       MmFreeNonCachedMemory(VirtualAddress, Length);
@@ -235,7 +247,7 @@ NdisImmediateWriteSharedMemory(
 
 
 /*
- * @unimplemented
+ * @implemented
  */
 VOID
 EXPORT
@@ -245,8 +257,23 @@ NdisMAllocateSharedMemory(
     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);
 }
 
 
@@ -261,14 +288,42 @@ NdisMAllocateSharedMemoryAsync(
     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
@@ -278,8 +333,45 @@ NdisMFreeSharedMemory(
     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 */
+