Add a DMA lib for the OMAP. It is a combination of PCI IO (generic ARM) DMA functions and OMAP specific DMA config routines. Update PCI emulation driver to use the new library. Started converting MMCHS (SD Card) driver over to using DMA, still a work in progress. Need to verify the 22 parameters required to setup a DMA transfer.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10469 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 15 insertions, 80 deletions

diff --git a/Omap35xxPkg/PciEmulation/PciEmulation.c b/Omap35xxPkg/PciEmulation/PciEmulation.c
index b264349b99..dd5e8f7b67 100644
--- a/Omap35xxPkg/PciEmulation/PciEmulation.c
+++ b/Omap35xxPkg/PciEmulation/PciEmulation.c
@@ -13,9 +13,7 @@
 **/
 
 #include "PciEmulation.h"
-#include <Omap3530/Omap3530.h>
 
-EFI_CPU_ARCH_PROTOCOL      *gCpu;
 EMBEDDED_EXTERNAL_DEVICE   *gTPS65950;
 
 #define HOST_CONTROLLER_OPERATION_REG_SIZE  0x44
@@ -263,41 +261,18 @@ PciIoMap (
   OUT    VOID                           **Mapping
   )
 {
-  MAP_INFO_INSTANCE     *Map;
-  EFI_STATUS            Status;
-
-  if ( HostAddress == NULL || NumberOfBytes == NULL || 
-       DeviceAddress == NULL || Mapping == NULL ) {
-    
-    return EFI_INVALID_PARAMETER;
-  }
-  
-
-  if (Operation >= EfiPciOperationMaximum) {
+  DMA_MAP_OPERATION   DmaOperation;
+
+  if (Operation == EfiPciIoOperationBusMasterRead) {
+    DmaOperation = MapOperationBusMasterRead;
+  } else if (Operation == EfiPciIoOperationBusMasterWrite) {
+    DmaOperation = MapOperationBusMasterWrite;
+  } else if (Operation == EfiPciIoOperationBusMasterCommonBuffer) {
+    DmaOperation = MapOperationBusMasterCommonBuffer;
+  } else {
     return EFI_INVALID_PARAMETER;
   }
-
-  *DeviceAddress = ConvertToPhysicalAddress (HostAddress);
-
-  // Data cache flush (HostAddress, NumberOfBytes);
-
-  // Remember range so we can flush on the other side
-  Status = gBS->AllocatePool (EfiBootServicesData, sizeof (PCI_DMA_MAP), (VOID **) &Map);
-  if (EFI_ERROR(Status)) {
-    return  EFI_OUT_OF_RESOURCES;
-  }
-  
-  *Mapping = Map;
-
-  Map->HostAddress   = (UINTN)HostAddress;
-  Map->DeviceAddress = *DeviceAddress;
-  Map->NumberOfBytes = *NumberOfBytes;
-  Map->Operation     = Operation;
-
-  // EfiCpuFlushTypeWriteBack, EfiCpuFlushTypeInvalidate
-  gCpu->FlushDataCache (gCpu, (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress, *NumberOfBytes, EfiCpuFlushTypeWriteBackInvalidate);
-  
-  return EFI_SUCCESS;
+  return DmaMap (DmaOperation, HostAddress, NumberOfBytes, DeviceAddress, Mapping);
 }
 
 EFI_STATUS
@@ -306,24 +281,7 @@ PciIoUnmap (
   IN  VOID                         *Mapping
   )
 {
-  PCI_DMA_MAP *Map;
-  
-  if (Mapping == NULL) {
-    ASSERT (FALSE);
-    return EFI_INVALID_PARAMETER;
-  }
-  
-  Map = (PCI_DMA_MAP *)Mapping;
-  if (Map->Operation == EfiPciOperationBusMasterWrite) {
-    //
-    // Make sure we read buffer from uncached memory and not the cache
-    //
-    gCpu->FlushDataCache (gCpu, Map->HostAddress, Map->NumberOfBytes, EfiCpuFlushTypeInvalidate);
-  } 
-  
-  FreePool (Map);
-
-  return EFI_SUCCESS;
+  return DmaUnmap (Mapping);
 }
 
 EFI_STATUS
@@ -337,29 +295,14 @@ PciIoAllocateBuffer (
   )
 {
   if (Attributes & EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER) {
+    // Check this
     return EFI_UNSUPPORTED;
   }
 
-  if (HostAddress == NULL) {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  //
-  // The only valid memory types are EfiBootServicesData and EfiRuntimeServicesData
-  //
-  // We used uncached memory to keep coherency
-  //
-  if (MemoryType == EfiBootServicesData) {
-    *HostAddress = UncachedAllocatePages (Pages);
-  } else if (MemoryType != EfiRuntimeServicesData) {
-    *HostAddress = UncachedAllocateRuntimePages (Pages);
-  } else {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  return EFI_SUCCESS;
+  return DmaAllocateBuffer (MemoryType, Pages, HostAddress);
 }
 
+
 EFI_STATUS
 PciIoFreeBuffer (
   IN EFI_PCI_IO_PROTOCOL           *This,
@@ -367,12 +310,7 @@ PciIoFreeBuffer (
   IN  VOID                         *HostAddress
   )
 {
-  if (HostAddress == NULL) {
-     return EFI_INVALID_PARAMETER;
-  } 
-  
-  UncachedFreePages (HostAddress, Pages);
-  return EFI_SUCCESS;
+  return DmaFreeBuffer (Pages, HostAddress);
 }
 
 
@@ -508,9 +446,6 @@ PciEmulationEntryPoint (
   UINT8                   PhysicalPorts;
   UINTN                   Count;
 
-  // Get the Cpu protocol for later use
-  Status = gBS->LocateProtocol(&gEfiCpuArchProtocolGuid, NULL, (VOID **)&gCpu);
-  ASSERT_EFI_ERROR(Status);
 
   //Configure USB host for OMAP3530.
   ConfigureUSBHost();