diff options
Diffstat (limited to 'Omap35xxPkg/Include/Library/OmapDmaLib.h')
-rwxr-xr-x | Omap35xxPkg/Include/Library/OmapDmaLib.h | 118 |
1 files changed, 2 insertions, 116 deletions
diff --git a/Omap35xxPkg/Include/Library/OmapDmaLib.h b/Omap35xxPkg/Include/Library/OmapDmaLib.h index d4daf6d364..0dc4468c91 100755 --- a/Omap35xxPkg/Include/Library/OmapDmaLib.h +++ b/Omap35xxPkg/Include/Library/OmapDmaLib.h @@ -1,10 +1,7 @@ /** @file - Abstractions for simple OMAP DMA. The DMA functions are modeled on - the PCI IO protocol and follow the same rules as outlined in the UEFI specification. - OMAP_DMA4 structure elements are described in the OMAP35xx TRM. Currently - there is no PCI'less DMA protocol, if one existed it could be used to - replace this library. + Abstractions for simple OMAP DMA. + OMAP_DMA4 structure elements are described in the OMAP35xx TRM. Copyright (c) 2008 - 2010, Apple Inc. All rights reserved.<BR> @@ -21,23 +18,6 @@ #ifndef __OMAP_DMA_LIB_H__ #define __OMAP_DMA_LIB_H__ -typedef enum {
- ///
- /// A read operation from system memory by a bus master.
- ///
- MapOperationBusMasterRead,
- ///
- /// A write operation from system memory by a bus master.
- ///
- MapOperationBusMasterWrite,
- ///
- /// Provides both read and write access to system memory by both the processor and a
- /// bus master. The buffer is coherent from both the processor's and the bus master's point of view.
- ///
- MapOperationBusMasterCommonBuffer,
- MapOperationMaximum
-} DMA_MAP_OPERATION;
- // Example from DMA chapter of the OMAP35xx spec typedef struct {
@@ -105,100 +85,6 @@ DisableDmaChannel ( ); -/**
- Provides the DMA controller-specific addresses needed to access system memory.
-
- Operation is relative to the DMA bus master.
-
- @param Operation Indicates if the bus master is going to read or write to system memory.
- @param HostAddress The system memory address to map to the DMA controller.
- @param NumberOfBytes On input the number of bytes to map. On output the number of bytes
- that were mapped.
- @param DeviceAddress The resulting map address for the bus master controller to use to
- access the hosts HostAddress.
- @param Mapping A resulting value to pass to Unmap().
-
- @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
- @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
- @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
-
-**/ -EFI_STATUS -EFIAPI -DmaMap ( - IN DMA_MAP_OPERATION Operation, - IN VOID *HostAddress,
- IN OUT UINTN *NumberOfBytes,
- OUT PHYSICAL_ADDRESS *DeviceAddress,
- OUT VOID **Mapping
- ); - - - - -/**
- Completes the DmaMapBusMasterRead(), DmaMapBusMasterWrite(), or DmaMapBusMasterCommonBuffer()
- operation and releases any corresponding resources.
-
- @param Mapping The mapping value returned from DmaMap*().
-
- @retval EFI_SUCCESS The range was unmapped.
- @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.
-
-**/ -EFI_STATUS -EFIAPI -DmaUnmap ( - IN VOID *Mapping
- ); - - -/**
- Allocates pages that are suitable for an DmaMap() of type MapOperationBusMasterCommonBuffer.
- mapping.
-
- @param MemoryType The type of memory to allocate, EfiBootServicesData or
- EfiRuntimeServicesData.
- @param Pages The number of pages to allocate.
- @param HostAddress A pointer to store the base system memory address of the
- allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were allocated.
- @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
- MEMORY_WRITE_COMBINE and MEMORY_CACHED.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
-
-**/ -EFI_STATUS -EFIAPI -DmaAllocateBuffer ( - IN EFI_MEMORY_TYPE MemoryType, - IN UINTN Pages,
- OUT VOID **HostAddress
- );
- - -/**
- Frees memory that was allocated with DmaAllocateBuffer().
-
- @param Pages The number of pages to free.
- @param HostAddress The base system memory address of the allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were freed.
- @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages
- was not allocated with DmaAllocateBuffer().
-
-**/
-EFI_STATUS -EFIAPI -DmaFreeBuffer ( - IN UINTN Pages,
- IN VOID *HostAddress
- );
- #endif |