+++ /dev/null
-/** @file\r
- The implementation for EFI_ISA_IO_PROTOCOL.\r
-\r
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
-SPDX-License-Identifier: BSD-2-Clause-Patent\r
-\r
-**/\r
-\r
-#include "InternalIsaIo.h"\r
-\r
-//\r
-// Module Variables\r
-//\r
-EFI_ISA_IO_PROTOCOL mIsaIoInterface = {\r
- {\r
- IsaIoMemRead,\r
- IsaIoMemWrite\r
- },\r
- {\r
- IsaIoIoRead,\r
- IsaIoIoWrite\r
- },\r
- IsaIoCopyMem,\r
- IsaIoMap,\r
- IsaIoUnmap,\r
- IsaIoAllocateBuffer,\r
- IsaIoFreeBuffer,\r
- IsaIoFlush,\r
- NULL,\r
- 0,\r
- NULL\r
-};\r
-\r
-EFI_ISA_DMA_REGISTERS mDmaRegisters[8] = {\r
- {\r
- 0x00,\r
- 0x87,\r
- 0x01\r
- },\r
- {\r
- 0x02,\r
- 0x83,\r
- 0x03\r
- },\r
- {\r
- 0x04,\r
- 0x81,\r
- 0x05\r
- },\r
- {\r
- 0x06,\r
- 0x82,\r
- 0x07\r
- },\r
- {\r
- 0x00,\r
- 0x00,\r
- 0x00\r
- }, // Channel 4 is invalid\r
- {\r
- 0xC4,\r
- 0x8B,\r
- 0xC6\r
- },\r
- {\r
- 0xC8,\r
- 0x89,\r
- 0xCA\r
- },\r
- {\r
- 0xCC,\r
- 0x8A,\r
- 0xCE\r
- },\r
-};\r
-\r
-/**\r
- Initializes an ISA I/O Instance\r
-\r
- @param[in] IsaIoDevice The iso device to be initialized.\r
- @param[in] IsaDeviceResourceList The resource list.\r
-\r
-**/\r
-VOID\r
-InitializeIsaIoInstance (\r
- IN ISA_IO_DEVICE *IsaIoDevice,\r
- IN EFI_ISA_ACPI_RESOURCE_LIST *IsaDeviceResourceList\r
- )\r
-{\r
- //\r
- // Use the ISA IO Protocol structure template to initialize the ISA IO instance\r
- //\r
- CopyMem (\r
- &IsaIoDevice->IsaIo,\r
- &mIsaIoInterface,\r
- sizeof (EFI_ISA_IO_PROTOCOL)\r
- );\r
-\r
- IsaIoDevice->IsaIo.ResourceList = IsaDeviceResourceList;\r
-}\r
-\r
-/**\r
- Performs an ISA I/O Read Cycle\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Width Specifies the width of the I/O operation.\r
- @param[in] Offset The offset in ISA I/O space to start the I/O operation.\r
- @param[in] Count The number of I/O operations to perform.\r
- @param[out] Buffer The destination buffer to store the results\r
-\r
- @retval EFI_SUCCESS The data was read from the device sucessfully.\r
- @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoIoRead (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINT32 Offset,\r
- IN UINTN Count,\r
- OUT VOID *Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- //\r
- // Verify Isa IO Access\r
- //\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeIo,\r
- Width,\r
- Count,\r
- Offset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoDevice->PciIo->Io.Read (\r
- IsaIoDevice->PciIo,\r
- (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- Offset,\r
- Count,\r
- Buffer\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Performs an ISA I/O Write Cycle\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Width Specifies the width of the I/O operation.\r
- @param[in] Offset The offset in ISA I/O space to start the I/O operation.\r
- @param[in] Count The number of I/O operations to perform.\r
- @param[in] Buffer The source buffer to write data from\r
-\r
- @retval EFI_SUCCESS The data was writen to the device sucessfully.\r
- @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoIoWrite (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINT32 Offset,\r
- IN UINTN Count,\r
- IN VOID *Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- //\r
- // Verify Isa IO Access\r
- //\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeIo,\r
- Width,\r
- Count,\r
- Offset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoDevice->PciIo->Io.Write (\r
- IsaIoDevice->PciIo,\r
- (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- Offset,\r
- Count,\r
- Buffer\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Writes an 8-bit I/O Port\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Offset The offset in ISA IO space to start the IO operation.\r
- @param[in] Value The data to write port.\r
-\r
- @retval EFI_SUCCESS Success.\r
- @retval EFI_INVALID_PARAMETER Parameter is invalid.\r
- @retval EFI_UNSUPPORTED The address range specified by Offset is not valid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-WritePort (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN UINT32 Offset,\r
- IN UINT8 Value\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- Status = IsaIoDevice->PciIo->Io.Write (\r
- IsaIoDevice->PciIo,\r
- EfiPciIoWidthUint8,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- Offset,\r
- 1,\r
- &Value\r
- );\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- return Status;\r
- }\r
-\r
- gBS->Stall (50);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Writes I/O operation base address and count number to a 8 bit I/O Port.\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] AddrOffset The address' offset.\r
- @param[in] PageOffset The page's offest.\r
- @param[in] CountOffset The count's offset.\r
- @param[in] BaseAddress The base address.\r
- @param[in] Count The number of I/O operations to perform.\r
-\r
- @retval EFI_SUCCESS Success.\r
- @retval EFI_INVALID_PARAMETER Parameter is invalid.\r
- @retval EFI_UNSUPPORTED The address range specified by these Offsets and Count is not valid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-WriteDmaPort (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN UINT32 AddrOffset,\r
- IN UINT32 PageOffset,\r
- IN UINT32 CountOffset,\r
- IN UINT32 BaseAddress,\r
- IN UINT16 Count\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = WritePort (This, AddrOffset, (UINT8) (BaseAddress & 0xff));\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, AddrOffset, (UINT8) ((BaseAddress >> 8) & 0xff));\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, PageOffset, (UINT8) ((BaseAddress >> 16) & 0xff));\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, CountOffset, (UINT8) (Count & 0xff));\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, CountOffset, (UINT8) ((Count >> 8) & 0xff));\r
- return Status;\r
-}\r
-\r
-/**\r
- Unmaps a memory region for DMA\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Mapping The mapping value returned from EFI_ISA_IO.Map().\r
-\r
- @retval EFI_SUCCESS The range was unmapped.\r
- @retval EFI_DEVICE_ERROR The data was not committed to the target system memory.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoUnmap (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN VOID *Mapping\r
- )\r
-{\r
- ISA_MAP_INFO *IsaMapInfo;\r
-\r
- //\r
- // Check if DMA is supported.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- //\r
- // See if the Map() operation associated with this Unmap() required a mapping\r
- // buffer.If a mapping buffer was not required, then this function simply\r
- // returns EFI_SUCCESS.\r
- //\r
- if (Mapping != NULL) {\r
- //\r
- // Get the MAP_INFO structure from Mapping\r
- //\r
- IsaMapInfo = (ISA_MAP_INFO *) Mapping;\r
-\r
- //\r
- // If this is a write operation from the Agent's point of view,\r
- // then copy the contents of the mapped buffer into the real buffer\r
- // so the processor can read the contents of the real buffer.\r
- //\r
- if (IsaMapInfo->Operation == EfiIsaIoOperationBusMasterWrite) {\r
- CopyMem (\r
- (VOID *) (UINTN) IsaMapInfo->HostAddress,\r
- (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r
- IsaMapInfo->NumberOfBytes\r
- );\r
- }\r
- //\r
- // Free the mapped buffer and the MAP_INFO structure.\r
- //\r
- gBS->FreePages (IsaMapInfo->MappedHostAddress, IsaMapInfo->NumberOfPages);\r
- FreePool (IsaMapInfo);\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Flushes any posted write data to the system memory.\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
-\r
- @retval EFI_SUCCESS The buffers were flushed.\r
- @retval EFI_DEVICE_ERROR The buffers were not flushed due to a hardware error.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoFlush (\r
- IN EFI_ISA_IO_PROTOCOL *This\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- Status = IsaIoDevice->PciIo->Flush (IsaIoDevice->PciIo);\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Verifies access to an ISA device\r
-\r
- @param[in] IsaIoDevice The ISA device to be verified.\r
- @param[in] Type The Access type. The input must be either IsaAccessTypeMem or IsaAccessTypeIo.\r
- @param[in] Width The width of the memory operation.\r
- @param[in] Count The number of memory operations to perform.\r
- @param[in] Offset The offset in ISA memory space to start the memory operation.\r
-\r
- @retval EFI_SUCCESS Verify success.\r
- @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r
- @retval EFI_UNSUPPORTED The device ont support the access type.\r
-**/\r
-EFI_STATUS\r
-IsaIoVerifyAccess (\r
- IN ISA_IO_DEVICE *IsaIoDevice,\r
- IN ISA_ACCESS_TYPE Type,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINTN Count,\r
- IN UINT32 Offset\r
- )\r
-{\r
- EFI_ISA_ACPI_RESOURCE *Item;\r
- EFI_STATUS Status;\r
-\r
- if ((UINT32)Width >= EfiIsaIoWidthMaximum ||\r
- Width == EfiIsaIoWidthReserved ||\r
- Width == EfiIsaIoWidthFifoReserved ||\r
- Width == EfiIsaIoWidthFillReserved\r
- ) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // If Width is EfiIsaIoWidthFifoUintX then convert to EfiIsaIoWidthUintX\r
- // If Width is EfiIsaIoWidthFillUintX then convert to EfiIsaIoWidthUintX\r
- //\r
- if (Width >= EfiIsaIoWidthFifoUint8 && Width < EfiIsaIoWidthFifoReserved) {\r
- Count = 1;\r
- }\r
-\r
- Width = (EFI_ISA_IO_PROTOCOL_WIDTH) (Width & 0x03);\r
-\r
- Status = EFI_UNSUPPORTED;\r
- Item = IsaIoDevice->IsaIo.ResourceList->ResourceItem;\r
- while (Item->Type != EfiIsaAcpiResourceEndOfList) {\r
- if ((Type == IsaAccessTypeMem && Item->Type == EfiIsaAcpiResourceMemory) ||\r
- (Type == IsaAccessTypeIo && Item->Type == EfiIsaAcpiResourceIo)) {\r
- if (Offset >= Item->StartRange && (Offset + Count * (UINT32)(1 << Width)) - 1 <= Item->EndRange) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (Offset >= Item->StartRange && Offset <= Item->EndRange) {\r
- Status = EFI_INVALID_PARAMETER;\r
- }\r
- }\r
-\r
- Item++;\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Performs an ISA Memory Read Cycle\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Width Specifies the width of the memory operation.\r
- @param[in] Offset The offset in ISA memory space to start the memory operation.\r
- @param[in] Count The number of memory operations to perform.\r
- @param[out] Buffer The destination buffer to store the results\r
-\r
- @retval EFI_SUCCESS The data was read from the device successfully.\r
- @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoMemRead (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINT32 Offset,\r
- IN UINTN Count,\r
- OUT VOID *Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- //\r
- // Check if ISA memory is supported.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- //\r
- // Verify the Isa Io Access\r
- //\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeMem,\r
- Width,\r
- Count,\r
- Offset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoDevice->PciIo->Mem.Read (\r
- IsaIoDevice->PciIo,\r
- (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- Offset,\r
- Count,\r
- Buffer\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Performs an ISA Memory Write Cycle\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Width Specifies the width of the memory operation.\r
- @param[in] Offset The offset in ISA memory space to start the memory operation.\r
- @param[in] Count The number of memory operations to perform.\r
- @param[in] Buffer The source buffer to write data from\r
-\r
- @retval EFI_SUCCESS The data was written to the device sucessfully.\r
- @retval EFI_UNSUPPORTED The Offset is not valid for this device.\r
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoMemWrite (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINT32 Offset,\r
- IN UINTN Count,\r
- IN VOID *Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- //\r
- // Check if ISA memory is supported.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- //\r
- // Verify Isa IO Access\r
- //\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeMem,\r
- Width,\r
- Count,\r
- Offset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoDevice->PciIo->Mem.Write (\r
- IsaIoDevice->PciIo,\r
- (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- Offset,\r
- Count,\r
- Buffer\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Copy one region of ISA memory space to another region of ISA memory space on the ISA controller.\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Width Specifies the width of the memory copy operation.\r
- @param[in] DestOffset The offset of the destination\r
- @param[in] SrcOffset The offset of the source\r
- @param[in] Count The number of memory copy operations to perform\r
-\r
- @retval EFI_SUCCESS The data was copied sucessfully.\r
- @retval EFI_UNSUPPORTED The DestOffset or SrcOffset is not valid for this device.\r
- @retval EFI_INVALID_PARAMETER Width or Count, or both, were invalid.\r
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoCopyMem (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_WIDTH Width,\r
- IN UINT32 DestOffset,\r
- IN UINT32 SrcOffset,\r
- IN UINTN Count\r
- )\r
-{\r
- EFI_STATUS Status;\r
- ISA_IO_DEVICE *IsaIoDevice;\r
-\r
- //\r
- // Check if ISA memory is supported.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_ISA_MEMORY) == 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- IsaIoDevice = ISA_IO_DEVICE_FROM_ISA_IO_THIS (This);\r
-\r
- //\r
- // Verify Isa IO Access for destination and source\r
- //\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeMem,\r
- Width,\r
- Count,\r
- DestOffset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoVerifyAccess (\r
- IsaIoDevice,\r
- IsaAccessTypeMem,\r
- Width,\r
- Count,\r
- SrcOffset\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = IsaIoDevice->PciIo->CopyMem (\r
- IsaIoDevice->PciIo,\r
- (EFI_PCI_IO_PROTOCOL_WIDTH) Width,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- DestOffset,\r
- EFI_PCI_IO_PASS_THROUGH_BAR,\r
- SrcOffset,\r
- Count\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Maps a memory region for DMA, note this implementation\r
- only supports slave read/write operation to save code size.\r
-\r
- @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param Operation Indicates the type of DMA (slave or bus master), and if\r
- the DMA operation is going to read or write to system memory.\r
- @param ChannelNumber The slave channel number to use for this DMA operation.\r
- If Operation and ChannelAttributes shows that this device\r
- performs bus mastering DMA, then this field is ignored.\r
- The legal range for this field is 0..7.\r
- @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r
- @param HostAddress The system memory address to map to the device.\r
- @param NumberOfBytes On input the number of bytes to map. On output the number\r
- of bytes that were mapped.\r
- @param DeviceAddress The resulting map address for the bus master device to use\r
- to access the hosts HostAddress.\r
- @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r
-\r
- @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
- @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r
- @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r
- @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r
-**/\r
-EFI_STATUS\r
-IsaIoMapOnlySupportSlaveReadWrite (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r
- IN UINT8 ChannelNumber OPTIONAL,\r
- IN UINT32 ChannelAttributes,\r
- IN VOID *HostAddress,\r
- IN OUT UINTN *NumberOfBytes,\r
- OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r
- OUT VOID **Mapping\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS PhysicalAddress;\r
- ISA_MAP_INFO *IsaMapInfo;\r
- UINT8 DmaMode;\r
- UINTN MaxNumberOfBytes;\r
- UINT32 BaseAddress;\r
- UINT16 Count;\r
- UINT8 DmaMask;\r
- UINT8 DmaClear;\r
- UINT8 DmaChannelMode;\r
-\r
- if ((NULL == This) ||\r
- (NULL == HostAddress) ||\r
- (NULL == NumberOfBytes) ||\r
- (NULL == DeviceAddress) ||\r
- (NULL == Mapping)\r
- ) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Initialize the return values to their defaults\r
- //\r
- *Mapping = NULL;\r
-\r
- //\r
- // Make sure the Operation parameter is valid.\r
- // Light IsaIo only supports two operations.\r
- //\r
- if (!(Operation == EfiIsaIoOperationSlaveRead ||\r
- Operation == EfiIsaIoOperationSlaveWrite)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (ChannelNumber >= 4) {\r
- //\r
- // The Light IsaIo doesn't support channelNumber larger than 4.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Map the HostAddress to a DeviceAddress.\r
- //\r
- PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r
- if ((PhysicalAddress + *NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r
- //\r
- // Common Buffer operations can not be remapped. If the common buffer\r
- // is above 16MB, then it is not possible to generate a mapping, so return\r
- // an error.\r
- //\r
- if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r
- return EFI_UNSUPPORTED;\r
- }\r
- //\r
- // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r
- // is called later.\r
- //\r
- IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r
- if (IsaMapInfo == NULL) {\r
- *NumberOfBytes = 0;\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- //\r
- // Return a pointer to the MAP_INFO structure in Mapping\r
- //\r
- *Mapping = IsaMapInfo;\r
-\r
- //\r
- // Initialize the MAP_INFO structure\r
- //\r
- IsaMapInfo->Operation = Operation;\r
- IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r
- IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r
- IsaMapInfo->HostAddress = PhysicalAddress;\r
- IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r
-\r
- //\r
- // Allocate a buffer below 16MB to map the transfer to.\r
- //\r
- Status = gBS->AllocatePages (\r
- AllocateMaxAddress,\r
- EfiBootServicesData,\r
- IsaMapInfo->NumberOfPages,\r
- &IsaMapInfo->MappedHostAddress\r
- );\r
- if (EFI_ERROR (Status)) {\r
- FreePool (IsaMapInfo);\r
- *NumberOfBytes = 0;\r
- *Mapping = NULL;\r
- return Status;\r
- }\r
- //\r
- // If this is a read operation from the DMA agents's point of view,\r
- // then copy the contents of the real buffer into the mapped buffer\r
- // so the DMA agent can read the contents of the real buffer.\r
- //\r
- if (Operation == EfiIsaIoOperationSlaveRead) {\r
- CopyMem (\r
- (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r
- (VOID *) (UINTN) IsaMapInfo->HostAddress,\r
- IsaMapInfo->NumberOfBytes\r
- );\r
- }\r
- //\r
- // The DeviceAddress is the address of the maped buffer below 16 MB\r
- //\r
- *DeviceAddress = IsaMapInfo->MappedHostAddress;\r
- } else {\r
- //\r
- // The transfer is below 16 MB, so the DeviceAddress is simply the\r
- // HostAddress\r
- //\r
- *DeviceAddress = PhysicalAddress;\r
- }\r
-\r
- //\r
- // Figure out what to program into the DMA Channel Mode Register\r
- //\r
- DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r
- if (Operation == EfiIsaIoOperationSlaveRead) {\r
- DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r
- } else {\r
- DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r
- }\r
- //\r
- // We only support EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE in simplified IsaIo\r
- //\r
- DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r
-\r
- //\r
- // A Slave DMA transfer can not cross a 64K boundary.\r
- // Compute *NumberOfBytes based on this restriction.\r
- //\r
- MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r
- if (*NumberOfBytes > MaxNumberOfBytes) {\r
- *NumberOfBytes = MaxNumberOfBytes;\r
- }\r
- //\r
- // Compute the values to program into the BaseAddress and Count registers\r
- // of the Slave DMA controller\r
- //\r
- BaseAddress = (UINT32) (*DeviceAddress);\r
- Count = (UINT16) (*NumberOfBytes - 1);\r
- //\r
- // Program the DMA Write Single Mask Register for ChannelNumber\r
- // Clear the DMA Byte Pointer Register\r
- //\r
- DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r
- DmaClear = R_8237_DMA_CBPR_CH0_3;\r
- DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r
-\r
- Status = WritePort (\r
- This,\r
- DmaMask,\r
- (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (\r
- This,\r
- DmaClear,\r
- (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, DmaChannelMode, DmaMode);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WriteDmaPort (\r
- This,\r
- mDmaRegisters[ChannelNumber].Address,\r
- mDmaRegisters[ChannelNumber].Page,\r
- mDmaRegisters[ChannelNumber].Count,\r
- BaseAddress,\r
- Count\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (\r
- This,\r
- DmaMask,\r
- (UINT8) (ChannelNumber & 0x03)\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Maps a memory region for DMA. This implementation implement the\r
- the full mapping support.\r
-\r
- @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param Operation Indicates the type of DMA (slave or bus master), and if\r
- the DMA operation is going to read or write to system memory.\r
- @param ChannelNumber The slave channel number to use for this DMA operation.\r
- If Operation and ChannelAttributes shows that this device\r
- performs bus mastering DMA, then this field is ignored.\r
- The legal range for this field is 0..7.\r
- @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r
- @param HostAddress The system memory address to map to the device.\r
- @param NumberOfBytes On input the number of bytes to map. On output the number\r
- of bytes that were mapped.\r
- @param DeviceAddress The resulting map address for the bus master device to use\r
- to access the hosts HostAddress.\r
- @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r
-\r
- @retval EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.\r
- @retval EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.\r
- @retval EFI_UNSUPPORTED - The HostAddress can not be mapped as a common buffer.\r
- @retval EFI_DEVICE_ERROR - The system hardware could not map the requested address.\r
- @retval EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.\r
-**/\r
-EFI_STATUS\r
-IsaIoMapFullSupport (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r
- IN UINT8 ChannelNumber OPTIONAL,\r
- IN UINT32 ChannelAttributes,\r
- IN VOID *HostAddress,\r
- IN OUT UINTN *NumberOfBytes,\r
- OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r
- OUT VOID **Mapping\r
- )\r
-{\r
- EFI_STATUS Status;\r
- BOOLEAN Master;\r
- BOOLEAN Read;\r
- EFI_PHYSICAL_ADDRESS PhysicalAddress;\r
- ISA_MAP_INFO *IsaMapInfo;\r
- UINT8 DmaMode;\r
- UINTN MaxNumberOfBytes;\r
- UINT32 BaseAddress;\r
- UINT16 Count;\r
- UINT8 DmaMask;\r
- UINT8 DmaClear;\r
- UINT8 DmaChannelMode;\r
-\r
- if ((NULL == This) ||\r
- (NULL == HostAddress) ||\r
- (NULL == NumberOfBytes) ||\r
- (NULL == DeviceAddress) ||\r
- (NULL == Mapping)\r
- ) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Initialize the return values to their defaults\r
- //\r
- *Mapping = NULL;\r
-\r
- //\r
- // Make sure the Operation parameter is valid\r
- //\r
- if ((UINT32)Operation >= EfiIsaIoOperationMaximum) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (ChannelNumber >= 8) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // See if this is a Slave DMA Operation\r
- //\r
- Master = TRUE;\r
- Read = FALSE;\r
- if (Operation == EfiIsaIoOperationSlaveRead) {\r
- Operation = EfiIsaIoOperationBusMasterRead;\r
- Master = FALSE;\r
- Read = TRUE;\r
- }\r
-\r
- if (Operation == EfiIsaIoOperationSlaveWrite) {\r
- Operation = EfiIsaIoOperationBusMasterWrite;\r
- Master = FALSE;\r
- Read = FALSE;\r
- }\r
-\r
- if (!Master) {\r
- //\r
- // Make sure that ChannelNumber is a valid channel number\r
- // Channel 4 is used to cascade, so it is illegal.\r
- //\r
- if (ChannelNumber == 4 || ChannelNumber > 7) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // This implementation only support COMPATIBLE DMA Transfers\r
- //\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_COMPATIBLE) == 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((ChannelAttributes &\r
- (EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_A |\r
- EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_B |\r
- EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SPEED_C)) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (ChannelNumber < 4) {\r
- //\r
- // If this is Channel 0..3, then the width must be 8 bit\r
- //\r
- if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) == 0) ||\r
- ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) != 0)\r
- ) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- //\r
- // If this is Channel 4..7, then the width must be 16 bit\r
- //\r
- if (((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_8) != 0) ||\r
- ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_WIDTH_16) == 0)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
- //\r
- // Either Demand Mode or Single Mode must be selected, but not both\r
- //\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) == 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
- }\r
- //\r
- // Map the HostAddress to a DeviceAddress.\r
- //\r
- PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress;\r
- if ((PhysicalAddress +*NumberOfBytes) > ISA_MAX_MEMORY_ADDRESS) {\r
- //\r
- // Common Buffer operations can not be remapped. If the common buffer\r
- // is above 16MB, then it is not possible to generate a mapping, so return\r
- // an error.\r
- //\r
- if (Operation == EfiIsaIoOperationBusMasterCommonBuffer) {\r
- return EFI_UNSUPPORTED;\r
- }\r
- //\r
- // Allocate an ISA_MAP_INFO structure to remember the mapping when Unmap()\r
- // is called later.\r
- //\r
- IsaMapInfo = AllocatePool (sizeof (ISA_MAP_INFO));\r
- if (IsaMapInfo == NULL) {\r
- *NumberOfBytes = 0;\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- //\r
- // Return a pointer to the MAP_INFO structure in Mapping\r
- //\r
- *Mapping = IsaMapInfo;\r
-\r
- //\r
- // Initialize the MAP_INFO structure\r
- //\r
- IsaMapInfo->Operation = Operation;\r
- IsaMapInfo->NumberOfBytes = *NumberOfBytes;\r
- IsaMapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);\r
- IsaMapInfo->HostAddress = PhysicalAddress;\r
- IsaMapInfo->MappedHostAddress = ISA_MAX_MEMORY_ADDRESS - 1;\r
-\r
- //\r
- // Allocate a buffer below 16MB to map the transfer to.\r
- //\r
- Status = gBS->AllocatePages (\r
- AllocateMaxAddress,\r
- EfiBootServicesData,\r
- IsaMapInfo->NumberOfPages,\r
- &IsaMapInfo->MappedHostAddress\r
- );\r
- if (EFI_ERROR (Status)) {\r
- FreePool (IsaMapInfo);\r
- *NumberOfBytes = 0;\r
- *Mapping = NULL;\r
- return Status;\r
- }\r
- //\r
- // If this is a read operation from the DMA agents's point of view,\r
- // then copy the contents of the real buffer into the mapped buffer\r
- // so the DMA agent can read the contents of the real buffer.\r
- //\r
- if (Operation == EfiIsaIoOperationBusMasterRead) {\r
- CopyMem (\r
- (VOID *) (UINTN) IsaMapInfo->MappedHostAddress,\r
- (VOID *) (UINTN) IsaMapInfo->HostAddress,\r
- IsaMapInfo->NumberOfBytes\r
- );\r
- }\r
- //\r
- // The DeviceAddress is the address of the maped buffer below 16 MB\r
- //\r
- *DeviceAddress = IsaMapInfo->MappedHostAddress;\r
- } else {\r
- //\r
- // The transfer is below 16 MB, so the DeviceAddress is simply the\r
- // HostAddress\r
- //\r
- *DeviceAddress = PhysicalAddress;\r
- }\r
- //\r
- // If this is a Bus Master operation then return\r
- //\r
- if (Master) {\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Figure out what to program into the DMA Channel Mode Register\r
- //\r
- DmaMode = (UINT8) (B_8237_DMA_CHMODE_INCREMENT | (ChannelNumber & 0x03));\r
- if (Read) {\r
- DmaMode |= V_8237_DMA_CHMODE_MEM2IO;\r
- } else {\r
- DmaMode |= V_8237_DMA_CHMODE_IO2MEM;\r
- }\r
-\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_AUTO_INITIALIZE) != 0) {\r
- DmaMode |= B_8237_DMA_CHMODE_AE;\r
- }\r
-\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_DEMAND_MODE) != 0) {\r
- DmaMode |= V_8237_DMA_CHMODE_DEMAND;\r
- }\r
-\r
- if ((ChannelAttributes & EFI_ISA_IO_SLAVE_DMA_ATTRIBUTE_SINGLE_MODE) != 0) {\r
- DmaMode |= V_8237_DMA_CHMODE_SINGLE;\r
- }\r
- //\r
- // A Slave DMA transfer can not cross a 64K boundary.\r
- // Compute *NumberOfBytes based on this restriction.\r
- //\r
- MaxNumberOfBytes = 0x10000 - ((UINT32) (*DeviceAddress) & 0xffff);\r
- if (*NumberOfBytes > MaxNumberOfBytes) {\r
- *NumberOfBytes = MaxNumberOfBytes;\r
- }\r
- //\r
- // Compute the values to program into the BaseAddress and Count registers\r
- // of the Slave DMA controller\r
- //\r
- if (ChannelNumber < 4) {\r
- BaseAddress = (UINT32) (*DeviceAddress);\r
- Count = (UINT16) (*NumberOfBytes - 1);\r
- } else {\r
- BaseAddress = (UINT32) (((UINT32) (*DeviceAddress) & 0xff0000) | (((UINT32) (*DeviceAddress) & 0xffff) >> 1));\r
- Count = (UINT16) ((*NumberOfBytes - 1) >> 1);\r
- }\r
- //\r
- // Program the DMA Write Single Mask Register for ChannelNumber\r
- // Clear the DMA Byte Pointer Register\r
- //\r
- if (ChannelNumber < 4) {\r
- DmaMask = R_8237_DMA_WRSMSK_CH0_3;\r
- DmaClear = R_8237_DMA_CBPR_CH0_3;\r
- DmaChannelMode = R_8237_DMA_CHMODE_CH0_3;\r
- } else {\r
- DmaMask = R_8237_DMA_WRSMSK_CH4_7;\r
- DmaClear = R_8237_DMA_CBPR_CH4_7;\r
- DmaChannelMode = R_8237_DMA_CHMODE_CH4_7;\r
- }\r
-\r
- Status = WritePort (\r
- This,\r
- DmaMask,\r
- (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (\r
- This,\r
- DmaClear,\r
- (UINT8) (B_8237_DMA_WRSMSK_CMS | (ChannelNumber & 0x03))\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (This, DmaChannelMode, DmaMode);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WriteDmaPort (\r
- This,\r
- mDmaRegisters[ChannelNumber].Address,\r
- mDmaRegisters[ChannelNumber].Page,\r
- mDmaRegisters[ChannelNumber].Count,\r
- BaseAddress,\r
- Count\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = WritePort (\r
- This,\r
- DmaMask,\r
- (UINT8) (ChannelNumber & 0x03)\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Maps a memory region for DMA\r
-\r
- @param This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param Operation Indicates the type of DMA (slave or bus master), and if\r
- the DMA operation is going to read or write to system memory.\r
- @param ChannelNumber The slave channel number to use for this DMA operation.\r
- If Operation and ChannelAttributes shows that this device\r
- performs bus mastering DMA, then this field is ignored.\r
- The legal range for this field is 0..7.\r
- @param ChannelAttributes The attributes of the DMA channel to use for this DMA operation\r
- @param HostAddress The system memory address to map to the device.\r
- @param NumberOfBytes On input the number of bytes to map. On output the number\r
- of bytes that were mapped.\r
- @param DeviceAddress The resulting map address for the bus master device to use\r
- to access the hosts HostAddress.\r
- @param Mapping A resulting value to pass to EFI_ISA_IO.Unmap().\r
-\r
- @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.\r
- @retval EFI_INVALID_PARAMETER The Operation or HostAddress is undefined.\r
- @retval EFI_UNSUPPORTED The HostAddress can not be mapped as a common buffer.\r
- @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.\r
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoMap (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ISA_IO_PROTOCOL_OPERATION Operation,\r
- IN UINT8 ChannelNumber OPTIONAL,\r
- IN UINT32 ChannelAttributes,\r
- IN VOID *HostAddress,\r
- IN OUT UINTN *NumberOfBytes,\r
- OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,\r
- OUT VOID **Mapping\r
- )\r
-{\r
- //\r
- // Check if DMA is supported.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
- //\r
- // Set Feature Flag PcdIsaBusSupportBusMaster to FALSE to disable support for\r
- // ISA Bus Master.\r
- //\r
- // So we just return EFI_UNSUPPORTED for these functions.\r
- //\r
- if ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0) {\r
- return IsaIoMapOnlySupportSlaveReadWrite (\r
- This,\r
- Operation,\r
- ChannelNumber,\r
- ChannelAttributes,\r
- HostAddress,\r
- NumberOfBytes,\r
- DeviceAddress,\r
- Mapping\r
- );\r
-\r
- } else {\r
- return IsaIoMapFullSupport (\r
- This,\r
- Operation,\r
- ChannelNumber,\r
- ChannelAttributes,\r
- HostAddress,\r
- NumberOfBytes,\r
- DeviceAddress,\r
- Mapping\r
- );\r
- }\r
-}\r
-\r
-/**\r
- Allocates pages that are suitable for an EfiIsaIoOperationBusMasterCommonBuffer mapping.\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Type The type allocation to perform.\r
- @param[in] MemoryType The type of memory to allocate.\r
- @param[in] Pages The number of pages to allocate.\r
- @param[out] HostAddress A pointer to store the base address of the allocated range.\r
- @param[in] Attributes The requested bit mask of attributes for the allocated range.\r
-\r
- @retval EFI_SUCCESS The requested memory pages were allocated.\r
- @retval EFI_INVALID_PARAMETER Type is invalid or MemoryType is invalid or HostAddress is NULL\r
- @retval EFI_UNSUPPORTED Attributes is unsupported or the memory range specified\r
- by HostAddress, Pages, and Type is not available for common buffer use.\r
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoAllocateBuffer (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN EFI_ALLOCATE_TYPE Type,\r
- IN EFI_MEMORY_TYPE MemoryType,\r
- IN UINTN Pages,\r
- OUT VOID **HostAddress,\r
- IN UINT64 Attributes\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS PhysicalAddress;\r
-\r
- //\r
- // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for\r
- // ISA Bus Master.\r
- // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r
- //\r
- if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r
- ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- if (HostAddress == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((UINT32)Type >= MaxAllocateType) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- //\r
- // The only valid memory types are EfiBootServicesData and EfiRuntimeServicesData\r
- //\r
- if (MemoryType != EfiBootServicesData && MemoryType != EfiRuntimeServicesData) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((Attributes & ~(EFI_ISA_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE | EFI_ISA_IO_ATTRIBUTE_MEMORY_CACHED)) != 0) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- PhysicalAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) (ISA_MAX_MEMORY_ADDRESS - 1);\r
- if (Type == AllocateAddress) {\r
- if ((UINTN) (*HostAddress) >= ISA_MAX_MEMORY_ADDRESS) {\r
- return EFI_UNSUPPORTED;\r
- } else {\r
- PhysicalAddress = (UINTN) (*HostAddress);\r
- }\r
- }\r
-\r
- if (Type == AllocateAnyPages) {\r
- Type = AllocateMaxAddress;\r
- }\r
-\r
- Status = gBS->AllocatePages (Type, MemoryType, Pages, &PhysicalAddress);\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- return Status;\r
- }\r
-\r
- *HostAddress = (VOID *) (UINTN) PhysicalAddress;\r
- return Status;\r
-}\r
-\r
-/**\r
- Frees memory that was allocated with EFI_ISA_IO.AllocateBuffer().\r
-\r
- @param[in] This A pointer to the EFI_ISA_IO_PROTOCOL instance.\r
- @param[in] Pages The number of pages to free.\r
- @param[in] HostAddress The base address of the allocated range.\r
-\r
- @retval EFI_SUCCESS The requested memory pages were freed.\r
- @retval EFI_INVALID_PARAMETER The memory was not allocated with EFI_ISA_IO.AllocateBufer().\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-IsaIoFreeBuffer (\r
- IN EFI_ISA_IO_PROTOCOL *This,\r
- IN UINTN Pages,\r
- IN VOID *HostAddress\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Set Feature Flag PcdIsaBusOnlySupportSlaveDma to FALSE to disable support for\r
- // ISA Bus Master.\r
- // Or unset Feature Flag PcdIsaBusSupportDma to disable support for ISA DMA.\r
- //\r
- if (((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_SUPPORT_DMA) == 0) ||\r
- ((PcdGet8 (PcdIsaBusSupportedFeatures) & PCD_ISA_BUS_ONLY_SUPPORT_SLAVE_DMA) != 0)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- Status = gBS->FreePages (\r
- (EFI_PHYSICAL_ADDRESS) (UINTN) HostAddress,\r
- Pages\r
- );\r
- if (EFI_ERROR (Status)) {\r
- REPORT_STATUS_CODE (\r
- EFI_ERROR_CODE | EFI_ERROR_MINOR,\r
- EFI_IO_BUS_LPC | EFI_IOB_EC_CONTROLLER_ERROR\r
- );\r
- }\r
-\r
- return Status;\r
-}\r
-\r
projects / mirror_edk2.git / blobdiff