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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.

Browse Source 
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10469 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
andrewfish
2010-05-08 19:32:03 +00:00
parent 6191913fb4
commit 7f814ffd44
14 changed files with 840 additions and 178 deletions
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93
Omap35xxPkg/PciEmulation/PciEmulation.c
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@@ -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;
DMA_MAP_OPERATION DmaOperation;
if ( HostAddress == NULL || NumberOfBytes == NULL ||
DeviceAddress == NULL || Mapping == NULL ) {
if (Operation == EfiPciIoOperationBusMasterRead) {
DmaOperation = MapOperationBusMasterRead;
} else if (Operation == EfiPciIoOperationBusMasterWrite) {
DmaOperation = MapOperationBusMasterWrite;
} else if (Operation == EfiPciIoOperationBusMasterCommonBuffer) {
DmaOperation = MapOperationBusMasterCommonBuffer;
} else {
return EFI_INVALID_PARAMETER;
}
if (Operation >= EfiPciOperationMaximum) {
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();