diff options
| author | kx <kx@radix.pro> | 2024-06-04 06:43:08 +0300 |
|---|---|---|
| committer | kx <kx@radix.pro> | 2024-06-04 06:43:08 +0300 |
| commit | 7e2ccccace24636f29ddc210b94606abd4c7e42b (patch) | |
| tree | 545d43ea12671048956cafeb12303e84d601e571 /MdeModulePkg/Universal/DebugPortDxe/DebugPort.h | |
| parent | 27b044605cd5f6b33a3d231576003850b3fe305b (diff) | |
| download | edk2-trunk.tar.xz | |
Renormalized end-of-lines from master@27b044605cd5f6b33a3d231576003850b3fe305btrunk
Diffstat (limited to 'MdeModulePkg/Universal/DebugPortDxe/DebugPort.h')
| -rw-r--r-- | MdeModulePkg/Universal/DebugPortDxe/DebugPort.h | 776 |
1 files changed, 388 insertions, 388 deletions
diff --git a/MdeModulePkg/Universal/DebugPortDxe/DebugPort.h b/MdeModulePkg/Universal/DebugPortDxe/DebugPort.h index 48be8ef16b..3e09607986 100644 --- a/MdeModulePkg/Universal/DebugPortDxe/DebugPort.h +++ b/MdeModulePkg/Universal/DebugPortDxe/DebugPort.h @@ -1,388 +1,388 @@ -/** @file
- Definitions and prototypes for DebugPort driver.
-
-Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
-SPDX-License-Identifier: BSD-2-Clause-Patent
-
-**/
-
-#ifndef __DEBUGPORT_H__
-#define __DEBUGPORT_H__
-
-#include <Uefi.h>
-
-#include <Protocol/DevicePath.h>
-#include <Protocol/ComponentName.h>
-#include <Protocol/DriverBinding.h>
-#include <Protocol/SerialIo.h>
-#include <Protocol/DebugPort.h>
-
-#include <Library/DebugLib.h>
-#include <Library/UefiDriverEntryPoint.h>
-#include <Library/UefiLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/UefiRuntimeServicesTableLib.h>
-#include <Library/DevicePathLib.h>
-
-//
-// Driver Binding Externs
-//
-extern EFI_DRIVER_BINDING_PROTOCOL gDebugPortDriverBinding;
-extern EFI_COMPONENT_NAME_PROTOCOL gDebugPortComponentName;
-extern EFI_COMPONENT_NAME2_PROTOCOL gDebugPortComponentName2;
-
-//
-// local type definitions
-//
-#define DEBUGPORT_DEVICE_SIGNATURE SIGNATURE_32 ('D', 'B', 'G', 'P')
-
-//
-// Device structure used by driver
-//
-typedef struct {
- UINT32 Signature;
- EFI_HANDLE DriverBindingHandle;
- EFI_HANDLE DebugPortDeviceHandle;
-
- EFI_DEVICE_PATH_PROTOCOL *DebugPortDevicePath;
- EFI_DEBUGPORT_PROTOCOL DebugPortInterface;
-
- EFI_HANDLE SerialIoDeviceHandle;
- EFI_SERIAL_IO_PROTOCOL *SerialIoBinding;
- UINT64 BaudRate;
- UINT32 ReceiveFifoDepth;
- UINT32 Timeout;
- EFI_PARITY_TYPE Parity;
- UINT8 DataBits;
- EFI_STOP_BITS_TYPE StopBits;
-} DEBUGPORT_DEVICE;
-
-#define DEBUGPORT_DEVICE_FROM_THIS(a) CR (a, DEBUGPORT_DEVICE, DebugPortInterface, DEBUGPORT_DEVICE_SIGNATURE)
-
-#define EFI_ACPI_PC_COMPORT_HID EISA_PNP_ID (0x0500)
-#define EFI_ACPI_16550UART_HID EISA_PNP_ID (0x0501)
-
-#define DEBUGPORT_UART_DEFAULT_BAUDRATE 115200
-#define DEBUGPORT_UART_DEFAULT_PARITY 0
-#define DEBUGPORT_UART_DEFAULT_FIFO_DEPTH 16
-#define DEBUGPORT_UART_DEFAULT_TIMEOUT 50000///< 5 ms
-#define DEBUGPORT_UART_DEFAULT_DATA_BITS 8
-#define DEBUGPORT_UART_DEFAULT_STOP_BITS 1
-
-#define DEBUGPORT_DRIVER_VERSION 1
-
-#define IS_UART_DEVICEPATH(dp) (DevicePathType (dp) == MESSAGING_DEVICE_PATH && DevicePathSubType (dp) == MSG_UART_DP)
-
-/**
- Debug Port Driver entry point.
-
- Reads DebugPort variable to determine what device and settings to use as the
- debug port. Binds exclusively to SerialIo. Reverts to defaults if no variable
- is found.
-
- @param[in] ImageHandle The firmware allocated handle for the EFI image.
- @param[in] SystemTable A pointer to the EFI System Table.
-
- @retval EFI_SUCCESS The entry point is executed successfully.
- @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
- @retval other Some error occurs when executing this entry point.
-
-**/
-EFI_STATUS
-EFIAPI
-InitializeDebugPortDriver (
- IN EFI_HANDLE ImageHandle,
- IN EFI_SYSTEM_TABLE *SystemTable
- );
-
-/**
- Checks to see if there's not already a DebugPort interface somewhere.
-
- If there's a DEBUGPORT variable, the device path must match exactly. If there's
- no DEBUGPORT variable, then device path is not checked and does not matter.
- Checks to see that there's a serial io interface on the controller handle
- that can be bound BY_DRIVER | EXCLUSIVE.
- If all these tests succeed, then we return EFI_SUCCESS, else, EFI_UNSUPPORTED
- or other error returned by OpenProtocol.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to test.
- @param RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCESS This driver supports this device.
- @retval EFI_UNSUPPORTED Debug Port device is not supported.
- @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
- @retval others Some error occurs.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortSupported (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- );
-
-/**
- Binds exclusively to serial io on the controller handle, Produces DebugPort
- protocol and DevicePath on new handle.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to bind driver to.
- @param RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCESS This driver is added to ControllerHandle.
- @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device.
- @retval others Some error occurs.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortStart (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
- );
-
-/**
- Stop this driver on ControllerHandle by removing Serial IO protocol on
- the ControllerHandle.
-
- @param This Protocol instance pointer.
- @param ControllerHandle Handle of device to stop driver on
- @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
- children is zero stop the entire bus driver.
- @param ChildHandleBuffer List of Child Handles to Stop.
-
- @retval EFI_SUCCESS This driver is removed ControllerHandle.
- @retval other This driver was not removed from this device.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortStop (
- IN EFI_DRIVER_BINDING_PROTOCOL *This,
- IN EFI_HANDLE Controller,
- IN UINTN NumberOfChildren,
- IN EFI_HANDLE *ChildHandleBuffer
- );
-
-//
-// EFI Component Name Functions
-//
-
-/**
- Retrieves a Unicode string that is the user readable name of the driver.
-
- This function retrieves the user readable name of a driver in the form of a
- Unicode string. If the driver specified by This has a user readable name in
- the language specified by Language, then a pointer to the driver name is
- returned in DriverName, and EFI_SUCCESS is returned. If the driver specified
- by This does not support the language specified by Language,
- then EFI_UNSUPPORTED is returned.
-
- @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
- EFI_COMPONENT_NAME_PROTOCOL instance.
-
- @param Language[in] A pointer to a Null-terminated ASCII string
- array indicating the language. This is the
- language of the driver name that the caller is
- requesting, and it must match one of the
- languages specified in SupportedLanguages. The
- number of languages supported by a driver is up
- to the driver writer. Language is specified
- in RFC 4646 or ISO 639-2 language code format.
-
- @param DriverName[out] A pointer to the Unicode string to return.
- This Unicode string is the name of the
- driver specified by This in the language
- specified by Language.
-
- @retval EFI_SUCCESS The Unicode string for the Driver specified by
- This and the language specified by Language was
- returned in DriverName.
-
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER DriverName is NULL.
-
- @retval EFI_UNSUPPORTED The driver specified by This does not support
- the language specified by Language.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortComponentNameGetDriverName (
- IN EFI_COMPONENT_NAME_PROTOCOL *This,
- IN CHAR8 *Language,
- OUT CHAR16 **DriverName
- );
-
-/**
- Retrieves a Unicode string that is the user readable name of the controller
- that is being managed by a driver.
-
- This function retrieves the user readable name of the controller specified by
- ControllerHandle and ChildHandle in the form of a Unicode string. If the
- driver specified by This has a user readable name in the language specified by
- Language, then a pointer to the controller name is returned in ControllerName,
- and EFI_SUCCESS is returned. If the driver specified by This is not currently
- managing the controller specified by ControllerHandle and ChildHandle,
- then EFI_UNSUPPORTED is returned. If the driver specified by This does not
- support the language specified by Language, then EFI_UNSUPPORTED is returned.
-
- @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or
- EFI_COMPONENT_NAME_PROTOCOL instance.
-
- @param ControllerHandle[in] The handle of a controller that the driver
- specified by This is managing. This handle
- specifies the controller whose name is to be
- returned.
-
- @param ChildHandle[in] The handle of the child controller to retrieve
- the name of. This is an optional parameter that
- may be NULL. It will be NULL for device
- drivers. It will also be NULL for a bus drivers
- that wish to retrieve the name of the bus
- controller. It will not be NULL for a bus
- driver that wishes to retrieve the name of a
- child controller.
-
- @param Language[in] A pointer to a Null-terminated ASCII string
- array indicating the language. This is the
- language of the driver name that the caller is
- requesting, and it must match one of the
- languages specified in SupportedLanguages. The
- number of languages supported by a driver is up
- to the driver writer. Language is specified in
- RFC 4646 or ISO 639-2 language code format.
-
- @param ControllerName[out] A pointer to the Unicode string to return.
- This Unicode string is the name of the
- controller specified by ControllerHandle and
- ChildHandle in the language specified by
- Language from the point of view of the driver
- specified by This.
-
- @retval EFI_SUCCESS The Unicode string for the user readable name in
- the language specified by Language for the
- driver specified by This was returned in
- DriverName.
-
- @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.
-
- @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid
- EFI_HANDLE.
-
- @retval EFI_INVALID_PARAMETER Language is NULL.
-
- @retval EFI_INVALID_PARAMETER ControllerName is NULL.
-
- @retval EFI_UNSUPPORTED The driver specified by This is not currently
- managing the controller specified by
- ControllerHandle and ChildHandle.
-
- @retval EFI_UNSUPPORTED The driver specified by This does not support
- the language specified by Language.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortComponentNameGetControllerName (
- IN EFI_COMPONENT_NAME_PROTOCOL *This,
- IN EFI_HANDLE ControllerHandle,
- IN EFI_HANDLE ChildHandle OPTIONAL,
- IN CHAR8 *Language,
- OUT CHAR16 **ControllerName
- );
-
-/**
- DebugPort protocol member function. Calls SerialIo:GetControl to flush buffer.
- We cannot call SerialIo:SetAttributes because it uses pool services, which use
- locks, which affect TPL, so it's not interrupt context safe or re-entrant.
- SerialIo:Reset() calls SetAttributes, so it can't be used either.
-
- The port itself should be fine since it was set up during initialization.
-
- @param This Protocol instance pointer.
-
- @return EFI_SUCCESS Always.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortReset (
- IN EFI_DEBUGPORT_PROTOCOL *This
- );
-
-/**
- DebugPort protocol member function. Calls SerialIo:Read() after setting
- if it's different than the last SerialIo access.
-
- @param This Pointer to DebugPort protocol.
- @param Timeout Timeout value.
- @param BufferSize On input, the size of Buffer.
- On output, the amount of data actually written.
- @param Buffer Pointer to buffer to read.
-
- @retval EFI_SUCCESS
- @retval others
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortRead (
- IN EFI_DEBUGPORT_PROTOCOL *This,
- IN UINT32 Timeout,
- IN OUT UINTN *BufferSize,
- IN VOID *Buffer
- );
-
-/**
- DebugPort protocol member function. Calls SerialIo:Write() Writes 8 bytes at
- a time and does a GetControl between 8 byte writes to help insure reads are
- interspersed This is poor-man's flow control.
-
- @param This Pointer to DebugPort protocol.
- @param Timeout Timeout value.
- @param BufferSize On input, the size of Buffer.
- On output, the amount of data actually written.
- @param Buffer Pointer to buffer to read.
-
- @retval EFI_SUCCESS The data was written.
- @retval others Fails when writting datas to debug port device.
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortWrite (
- IN EFI_DEBUGPORT_PROTOCOL *This,
- IN UINT32 Timeout,
- IN OUT UINTN *BufferSize,
- OUT VOID *Buffer
- );
-
-/**
- DebugPort protocol member function. Calls SerialIo:Write() after setting
- if it's different than the last SerialIo access.
-
- @param This Pointer to DebugPort protocol.
-
- @retval EFI_SUCCESS At least 1 character is ready to be read from
- the DebugPort interface.
- @retval EFI_NOT_READY There are no characters ready to read from the
- DebugPort interface
- @retval EFI_DEVICE_ERROR A hardware failure occurred... (from SerialIo)
-
-**/
-EFI_STATUS
-EFIAPI
-DebugPortPoll (
- IN EFI_DEBUGPORT_PROTOCOL *This
- );
-
-#endif
+/** @file + Definitions and prototypes for DebugPort driver. + +Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#ifndef __DEBUGPORT_H__ +#define __DEBUGPORT_H__ + +#include <Uefi.h> + +#include <Protocol/DevicePath.h> +#include <Protocol/ComponentName.h> +#include <Protocol/DriverBinding.h> +#include <Protocol/SerialIo.h> +#include <Protocol/DebugPort.h> + +#include <Library/DebugLib.h> +#include <Library/UefiDriverEntryPoint.h> +#include <Library/UefiLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/MemoryAllocationLib.h> +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiRuntimeServicesTableLib.h> +#include <Library/DevicePathLib.h> + +// +// Driver Binding Externs +// +extern EFI_DRIVER_BINDING_PROTOCOL gDebugPortDriverBinding; +extern EFI_COMPONENT_NAME_PROTOCOL gDebugPortComponentName; +extern EFI_COMPONENT_NAME2_PROTOCOL gDebugPortComponentName2; + +// +// local type definitions +// +#define DEBUGPORT_DEVICE_SIGNATURE SIGNATURE_32 ('D', 'B', 'G', 'P') + +// +// Device structure used by driver +// +typedef struct { + UINT32 Signature; + EFI_HANDLE DriverBindingHandle; + EFI_HANDLE DebugPortDeviceHandle; + + EFI_DEVICE_PATH_PROTOCOL *DebugPortDevicePath; + EFI_DEBUGPORT_PROTOCOL DebugPortInterface; + + EFI_HANDLE SerialIoDeviceHandle; + EFI_SERIAL_IO_PROTOCOL *SerialIoBinding; + UINT64 BaudRate; + UINT32 ReceiveFifoDepth; + UINT32 Timeout; + EFI_PARITY_TYPE Parity; + UINT8 DataBits; + EFI_STOP_BITS_TYPE StopBits; +} DEBUGPORT_DEVICE; + +#define DEBUGPORT_DEVICE_FROM_THIS(a) CR (a, DEBUGPORT_DEVICE, DebugPortInterface, DEBUGPORT_DEVICE_SIGNATURE) + +#define EFI_ACPI_PC_COMPORT_HID EISA_PNP_ID (0x0500) +#define EFI_ACPI_16550UART_HID EISA_PNP_ID (0x0501) + +#define DEBUGPORT_UART_DEFAULT_BAUDRATE 115200 +#define DEBUGPORT_UART_DEFAULT_PARITY 0 +#define DEBUGPORT_UART_DEFAULT_FIFO_DEPTH 16 +#define DEBUGPORT_UART_DEFAULT_TIMEOUT 50000///< 5 ms +#define DEBUGPORT_UART_DEFAULT_DATA_BITS 8 +#define DEBUGPORT_UART_DEFAULT_STOP_BITS 1 + +#define DEBUGPORT_DRIVER_VERSION 1 + +#define IS_UART_DEVICEPATH(dp) (DevicePathType (dp) == MESSAGING_DEVICE_PATH && DevicePathSubType (dp) == MSG_UART_DP) + +/** + Debug Port Driver entry point. + + Reads DebugPort variable to determine what device and settings to use as the + debug port. Binds exclusively to SerialIo. Reverts to defaults if no variable + is found. + + @param[in] ImageHandle The firmware allocated handle for the EFI image. + @param[in] SystemTable A pointer to the EFI System Table. + + @retval EFI_SUCCESS The entry point is executed successfully. + @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device. + @retval other Some error occurs when executing this entry point. + +**/ +EFI_STATUS +EFIAPI +InitializeDebugPortDriver ( + IN EFI_HANDLE ImageHandle, + IN EFI_SYSTEM_TABLE *SystemTable + ); + +/** + Checks to see if there's not already a DebugPort interface somewhere. + + If there's a DEBUGPORT variable, the device path must match exactly. If there's + no DEBUGPORT variable, then device path is not checked and does not matter. + Checks to see that there's a serial io interface on the controller handle + that can be bound BY_DRIVER | EXCLUSIVE. + If all these tests succeed, then we return EFI_SUCCESS, else, EFI_UNSUPPORTED + or other error returned by OpenProtocol. + + @param This Protocol instance pointer. + @param ControllerHandle Handle of device to test. + @param RemainingDevicePath Optional parameter use to pick a specific child + device to start. + + @retval EFI_SUCCESS This driver supports this device. + @retval EFI_UNSUPPORTED Debug Port device is not supported. + @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device. + @retval others Some error occurs. + +**/ +EFI_STATUS +EFIAPI +DebugPortSupported ( + IN EFI_DRIVER_BINDING_PROTOCOL *This, + IN EFI_HANDLE Controller, + IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath + ); + +/** + Binds exclusively to serial io on the controller handle, Produces DebugPort + protocol and DevicePath on new handle. + + @param This Protocol instance pointer. + @param ControllerHandle Handle of device to bind driver to. + @param RemainingDevicePath Optional parameter use to pick a specific child + device to start. + + @retval EFI_SUCCESS This driver is added to ControllerHandle. + @retval EFI_OUT_OF_RESOURCES Fails to allocate memory for device. + @retval others Some error occurs. + +**/ +EFI_STATUS +EFIAPI +DebugPortStart ( + IN EFI_DRIVER_BINDING_PROTOCOL *This, + IN EFI_HANDLE Controller, + IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath + ); + +/** + Stop this driver on ControllerHandle by removing Serial IO protocol on + the ControllerHandle. + + @param This Protocol instance pointer. + @param ControllerHandle Handle of device to stop driver on + @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of + children is zero stop the entire bus driver. + @param ChildHandleBuffer List of Child Handles to Stop. + + @retval EFI_SUCCESS This driver is removed ControllerHandle. + @retval other This driver was not removed from this device. + +**/ +EFI_STATUS +EFIAPI +DebugPortStop ( + IN EFI_DRIVER_BINDING_PROTOCOL *This, + IN EFI_HANDLE Controller, + IN UINTN NumberOfChildren, + IN EFI_HANDLE *ChildHandleBuffer + ); + +// +// EFI Component Name Functions +// + +/** + Retrieves a Unicode string that is the user readable name of the driver. + + This function retrieves the user readable name of a driver in the form of a + Unicode string. If the driver specified by This has a user readable name in + the language specified by Language, then a pointer to the driver name is + returned in DriverName, and EFI_SUCCESS is returned. If the driver specified + by This does not support the language specified by Language, + then EFI_UNSUPPORTED is returned. + + @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or + EFI_COMPONENT_NAME_PROTOCOL instance. + + @param Language[in] A pointer to a Null-terminated ASCII string + array indicating the language. This is the + language of the driver name that the caller is + requesting, and it must match one of the + languages specified in SupportedLanguages. The + number of languages supported by a driver is up + to the driver writer. Language is specified + in RFC 4646 or ISO 639-2 language code format. + + @param DriverName[out] A pointer to the Unicode string to return. + This Unicode string is the name of the + driver specified by This in the language + specified by Language. + + @retval EFI_SUCCESS The Unicode string for the Driver specified by + This and the language specified by Language was + returned in DriverName. + + @retval EFI_INVALID_PARAMETER Language is NULL. + + @retval EFI_INVALID_PARAMETER DriverName is NULL. + + @retval EFI_UNSUPPORTED The driver specified by This does not support + the language specified by Language. + +**/ +EFI_STATUS +EFIAPI +DebugPortComponentNameGetDriverName ( + IN EFI_COMPONENT_NAME_PROTOCOL *This, + IN CHAR8 *Language, + OUT CHAR16 **DriverName + ); + +/** + Retrieves a Unicode string that is the user readable name of the controller + that is being managed by a driver. + + This function retrieves the user readable name of the controller specified by + ControllerHandle and ChildHandle in the form of a Unicode string. If the + driver specified by This has a user readable name in the language specified by + Language, then a pointer to the controller name is returned in ControllerName, + and EFI_SUCCESS is returned. If the driver specified by This is not currently + managing the controller specified by ControllerHandle and ChildHandle, + then EFI_UNSUPPORTED is returned. If the driver specified by This does not + support the language specified by Language, then EFI_UNSUPPORTED is returned. + + @param This[in] A pointer to the EFI_COMPONENT_NAME2_PROTOCOL or + EFI_COMPONENT_NAME_PROTOCOL instance. + + @param ControllerHandle[in] The handle of a controller that the driver + specified by This is managing. This handle + specifies the controller whose name is to be + returned. + + @param ChildHandle[in] The handle of the child controller to retrieve + the name of. This is an optional parameter that + may be NULL. It will be NULL for device + drivers. It will also be NULL for a bus drivers + that wish to retrieve the name of the bus + controller. It will not be NULL for a bus + driver that wishes to retrieve the name of a + child controller. + + @param Language[in] A pointer to a Null-terminated ASCII string + array indicating the language. This is the + language of the driver name that the caller is + requesting, and it must match one of the + languages specified in SupportedLanguages. The + number of languages supported by a driver is up + to the driver writer. Language is specified in + RFC 4646 or ISO 639-2 language code format. + + @param ControllerName[out] A pointer to the Unicode string to return. + This Unicode string is the name of the + controller specified by ControllerHandle and + ChildHandle in the language specified by + Language from the point of view of the driver + specified by This. + + @retval EFI_SUCCESS The Unicode string for the user readable name in + the language specified by Language for the + driver specified by This was returned in + DriverName. + + @retval EFI_INVALID_PARAMETER ControllerHandle is NULL. + + @retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid + EFI_HANDLE. + + @retval EFI_INVALID_PARAMETER Language is NULL. + + @retval EFI_INVALID_PARAMETER ControllerName is NULL. + + @retval EFI_UNSUPPORTED The driver specified by This is not currently + managing the controller specified by + ControllerHandle and ChildHandle. + + @retval EFI_UNSUPPORTED The driver specified by This does not support + the language specified by Language. + +**/ +EFI_STATUS +EFIAPI +DebugPortComponentNameGetControllerName ( + IN EFI_COMPONENT_NAME_PROTOCOL *This, + IN EFI_HANDLE ControllerHandle, + IN EFI_HANDLE ChildHandle OPTIONAL, + IN CHAR8 *Language, + OUT CHAR16 **ControllerName + ); + +/** + DebugPort protocol member function. Calls SerialIo:GetControl to flush buffer. + We cannot call SerialIo:SetAttributes because it uses pool services, which use + locks, which affect TPL, so it's not interrupt context safe or re-entrant. + SerialIo:Reset() calls SetAttributes, so it can't be used either. + + The port itself should be fine since it was set up during initialization. + + @param This Protocol instance pointer. + + @return EFI_SUCCESS Always. + +**/ +EFI_STATUS +EFIAPI +DebugPortReset ( + IN EFI_DEBUGPORT_PROTOCOL *This + ); + +/** + DebugPort protocol member function. Calls SerialIo:Read() after setting + if it's different than the last SerialIo access. + + @param This Pointer to DebugPort protocol. + @param Timeout Timeout value. + @param BufferSize On input, the size of Buffer. + On output, the amount of data actually written. + @param Buffer Pointer to buffer to read. + + @retval EFI_SUCCESS + @retval others + +**/ +EFI_STATUS +EFIAPI +DebugPortRead ( + IN EFI_DEBUGPORT_PROTOCOL *This, + IN UINT32 Timeout, + IN OUT UINTN *BufferSize, + IN VOID *Buffer + ); + +/** + DebugPort protocol member function. Calls SerialIo:Write() Writes 8 bytes at + a time and does a GetControl between 8 byte writes to help insure reads are + interspersed This is poor-man's flow control. + + @param This Pointer to DebugPort protocol. + @param Timeout Timeout value. + @param BufferSize On input, the size of Buffer. + On output, the amount of data actually written. + @param Buffer Pointer to buffer to read. + + @retval EFI_SUCCESS The data was written. + @retval others Fails when writting datas to debug port device. + +**/ +EFI_STATUS +EFIAPI +DebugPortWrite ( + IN EFI_DEBUGPORT_PROTOCOL *This, + IN UINT32 Timeout, + IN OUT UINTN *BufferSize, + OUT VOID *Buffer + ); + +/** + DebugPort protocol member function. Calls SerialIo:Write() after setting + if it's different than the last SerialIo access. + + @param This Pointer to DebugPort protocol. + + @retval EFI_SUCCESS At least 1 character is ready to be read from + the DebugPort interface. + @retval EFI_NOT_READY There are no characters ready to read from the + DebugPort interface + @retval EFI_DEVICE_ERROR A hardware failure occurred... (from SerialIo) + +**/ +EFI_STATUS +EFIAPI +DebugPortPoll ( + IN EFI_DEBUGPORT_PROTOCOL *This + ); + +#endif |
