mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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784 lines
29 KiB
C
784 lines
29 KiB
C
/** @file
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Header file for PciSioSerial Driver
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _SERIAL_H_
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#define _SERIAL_H_
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#include <Uefi.h>
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#include <IndustryStandard/Pci.h>
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#include <Protocol/SuperIo.h>
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#include <Protocol/PciIo.h>
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#include <Protocol/SerialIo.h>
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#include <Protocol/DevicePath.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/UefiLib.h>
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#include <Library/DevicePathLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/ReportStatusCodeLib.h>
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#include <Library/PcdLib.h>
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#include <Library/IoLib.h>
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#include <Library/PrintLib.h>
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//
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// Driver Binding Externs
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//
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extern EFI_DRIVER_BINDING_PROTOCOL gSerialControllerDriver;
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extern EFI_COMPONENT_NAME_PROTOCOL gPciSioSerialComponentName;
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extern EFI_COMPONENT_NAME2_PROTOCOL gPciSioSerialComponentName2;
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#define SIO_SERIAL_PORT_NAME L"SIO Serial Port #%d"
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#define PCI_SERIAL_PORT_NAME L"PCI Serial Port #%d"
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#define SERIAL_PORT_NAME_LEN (sizeof (SIO_SERIAL_PORT_NAME) / sizeof (CHAR16) + MAXIMUM_VALUE_CHARACTERS)
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//
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// Internal Data Structures
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//
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#define TIMEOUT_STALL_INTERVAL 10
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#pragma pack(1)
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///
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/// PcdPciSerialParameters contains zero or more instances of the below structure.
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/// If a PCI device contains multiple UARTs, PcdPciSerialParameters needs to contain
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/// two instances of the below structure, with the VendorId and DeviceId equals to the
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/// device ID and vendor ID of the device. If the PCI device uses the first two BARs
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/// to support multiple UARTs, BarIndex of first instance equals to 0 and BarIndex of
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/// second one equals to 1; if the PCI device uses the first BAR to support multiple
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/// UARTs, BarIndex of both instance equals to 0 and Offset of first instance equals
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/// to 0 while Offset of second one equals to some value bigger or equal to 8.
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/// For certain UART whose register needs to be accessed in DWORD aligned address,
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/// RegisterStride equals to 4.
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///
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typedef struct {
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UINT16 VendorId; ///< Vendor ID to match the PCI device. The value 0xFFFF terminates the list of entries.
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UINT16 DeviceId; ///< Device ID to match the PCI device
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UINT32 ClockRate; ///< UART clock rate. Set to 0 for default clock rate of 1843200 Hz
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UINT64 Offset; ///< The byte offset into to the BAR
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UINT8 BarIndex; ///< Which BAR to get the UART base address
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UINT8 RegisterStride; ///< UART register stride in bytes. Set to 0 for default register stride of 1 byte.
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UINT16 ReceiveFifoDepth; ///< UART receive FIFO depth in bytes. Set to 0 for a default FIFO depth of 16 bytes.
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UINT16 TransmitFifoDepth; ///< UART transmit FIFO depth in bytes. Set to 0 for a default FIFO depth of 16 bytes.
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UINT8 Reserved[2];
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} PCI_SERIAL_PARAMETER;
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#pragma pack()
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#define SERIAL_MAX_FIFO_SIZE 17 ///< Actual FIFO size is 16. FIFO based on circular wastes one unit.
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typedef struct {
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UINT16 Head; ///< Head pointer of the FIFO. Empty when (Head == Tail).
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UINT16 Tail; ///< Tail pointer of the FIFO. Full when ((Tail + 1) % SERIAL_MAX_FIFO_SIZE == Head).
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UINT8 Data[SERIAL_MAX_FIFO_SIZE]; ///< Store the FIFO data.
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} SERIAL_DEV_FIFO;
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typedef union {
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EFI_PCI_IO_PROTOCOL *PciIo;
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EFI_SIO_PROTOCOL *Sio;
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} PARENT_IO_PROTOCOL_PTR;
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typedef struct {
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EFI_PCI_IO_PROTOCOL *PciIo; // Pointer to parent PciIo instance.
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UINTN ChildCount; // Count of child SerialIo instance.
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UINT64 PciAttributes; // Original PCI attributes.
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} PCI_DEVICE_INFO;
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typedef struct {
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UINT32 Signature;
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EFI_HANDLE Handle;
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EFI_SERIAL_IO_PROTOCOL SerialIo;
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EFI_SERIAL_IO_MODE SerialMode;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
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UART_DEVICE_PATH UartDevicePath;
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EFI_PHYSICAL_ADDRESS BaseAddress; ///< UART base address
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BOOLEAN MmioAccess; ///< TRUE for MMIO, FALSE for IO
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UINT8 RegisterStride; ///< UART Register Stride
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UINT32 ClockRate; ///< UART clock rate
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UINT16 ReceiveFifoDepth; ///< UART receive FIFO depth in bytes.
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SERIAL_DEV_FIFO Receive; ///< The FIFO used to store received data
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UINT16 TransmitFifoDepth; ///< UART transmit FIFO depth in bytes.
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SERIAL_DEV_FIFO Transmit; ///< The FIFO used to store to-transmit data
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BOOLEAN SoftwareLoopbackEnable;
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BOOLEAN HardwareFlowControl;
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EFI_UNICODE_STRING_TABLE *ControllerNameTable;
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BOOLEAN ContainsControllerNode; ///< TRUE if the device produced contains Controller node
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UINT32 Instance;
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PCI_DEVICE_INFO *PciDeviceInfo;
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} SERIAL_DEV;
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#define SERIAL_DEV_SIGNATURE SIGNATURE_32 ('s', 'e', 'r', 'd')
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#define SERIAL_DEV_FROM_THIS(a) CR (a, SERIAL_DEV, SerialIo, SERIAL_DEV_SIGNATURE)
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//
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// Serial Driver Defaults
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//
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#define SERIAL_PORT_DEFAULT_TIMEOUT 1000000
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#define SERIAL_PORT_SUPPORT_CONTROL_MASK (EFI_SERIAL_CLEAR_TO_SEND | \
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EFI_SERIAL_DATA_SET_READY | \
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EFI_SERIAL_RING_INDICATE | \
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EFI_SERIAL_CARRIER_DETECT | \
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EFI_SERIAL_REQUEST_TO_SEND | \
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EFI_SERIAL_DATA_TERMINAL_READY | \
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EFI_SERIAL_HARDWARE_LOOPBACK_ENABLE | \
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EFI_SERIAL_SOFTWARE_LOOPBACK_ENABLE | \
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EFI_SERIAL_HARDWARE_FLOW_CONTROL_ENABLE | \
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EFI_SERIAL_OUTPUT_BUFFER_EMPTY | \
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EFI_SERIAL_INPUT_BUFFER_EMPTY)
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#define SERIAL_PORT_MIN_TIMEOUT 1 // 1 uS
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#define SERIAL_PORT_MAX_TIMEOUT 100000000 // 100 seconds
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//
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// UART Registers
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//
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#define SERIAL_REGISTER_THR 0 ///< WO Transmit Holding Register
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#define SERIAL_REGISTER_RBR 0 ///< RO Receive Buffer Register
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#define SERIAL_REGISTER_DLL 0 ///< R/W Divisor Latch LSB
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#define SERIAL_REGISTER_DLM 1 ///< R/W Divisor Latch MSB
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#define SERIAL_REGISTER_IER 1 ///< R/W Interrupt Enable Register
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#define SERIAL_REGISTER_IIR 2 ///< RO Interrupt Identification Register
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#define SERIAL_REGISTER_FCR 2 ///< WO FIFO Cotrol Register
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#define SERIAL_REGISTER_LCR 3 ///< R/W Line Control Register
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#define SERIAL_REGISTER_MCR 4 ///< R/W Modem Control Register
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#define SERIAL_REGISTER_LSR 5 ///< R/W Line Status Register
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#define SERIAL_REGISTER_MSR 6 ///< R/W Modem Status Register
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#define SERIAL_REGISTER_SCR 7 ///< R/W Scratch Pad Register
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#pragma pack(1)
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///
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/// Interrupt Enable Register
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///
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typedef union {
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struct {
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UINT8 Ravie : 1; ///< Receiver Data Available Interrupt Enable
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UINT8 Theie : 1; ///< Transmistter Holding Register Empty Interrupt Enable
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UINT8 Rie : 1; ///< Receiver Interrupt Enable
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UINT8 Mie : 1; ///< Modem Interrupt Enable
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UINT8 Reserved : 4;
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_IER;
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///
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/// FIFO Control Register
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///
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typedef union {
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struct {
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UINT8 TrFIFOE : 1; ///< Transmit and Receive FIFO Enable
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UINT8 ResetRF : 1; ///< Reset Reciever FIFO
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UINT8 ResetTF : 1; ///< Reset Transmistter FIFO
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UINT8 Dms : 1; ///< DMA Mode Select
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UINT8 Reserved : 1;
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UINT8 TrFIFO64 : 1; ///< Enable 64 byte FIFO
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UINT8 Rtb : 2; ///< Receive Trigger Bits
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_FCR;
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///
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/// Line Control Register
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///
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typedef union {
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struct {
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UINT8 SerialDB : 2; ///< Number of Serial Data Bits
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UINT8 StopB : 1; ///< Number of Stop Bits
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UINT8 ParEn : 1; ///< Parity Enable
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UINT8 EvenPar : 1; ///< Even Parity Select
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UINT8 SticPar : 1; ///< Sticky Parity
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UINT8 BrCon : 1; ///< Break Control
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UINT8 DLab : 1; ///< Divisor Latch Access Bit
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_LCR;
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///
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/// Modem Control Register
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///
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typedef union {
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struct {
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UINT8 DtrC : 1; ///< Data Terminal Ready Control
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UINT8 Rts : 1; ///< Request To Send Control
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UINT8 Out1 : 1; ///< Output1
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UINT8 Out2 : 1; ///< Output2, used to disable interrupt
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UINT8 Lme : 1; ///< Loopback Mode Enable
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UINT8 Reserved : 3;
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_MCR;
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///
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/// Line Status Register
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///
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typedef union {
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struct {
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UINT8 Dr : 1; ///< Receiver Data Ready Status
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UINT8 Oe : 1; ///< Overrun Error Status
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UINT8 Pe : 1; ///< Parity Error Status
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UINT8 Fe : 1; ///< Framing Error Status
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UINT8 Bi : 1; ///< Break Interrupt Status
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UINT8 Thre : 1; ///< Transmistter Holding Register Status
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UINT8 Temt : 1; ///< Transmitter Empty Status
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UINT8 FIFOe : 1; ///< FIFO Error Status
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_LSR;
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///
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/// Modem Status Register
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///
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typedef union {
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struct {
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UINT8 DeltaCTS : 1; ///< Delta Clear To Send Status
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UINT8 DeltaDSR : 1; ///< Delta Data Set Ready Status
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UINT8 TrailingEdgeRI : 1; ///< Trailing Edge of Ring Indicator Status
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UINT8 DeltaDCD : 1; ///< Delta Data Carrier Detect Status
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UINT8 Cts : 1; ///< Clear To Send Status
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UINT8 Dsr : 1; ///< Data Set Ready Status
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UINT8 Ri : 1; ///< Ring Indicator Status
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UINT8 Dcd : 1; ///< Data Carrier Detect Status
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} Bits;
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UINT8 Data;
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} SERIAL_PORT_MSR;
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#pragma pack()
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//
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// Define serial register I/O macros
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//
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#define READ_RBR(S) SerialReadRegister (S, SERIAL_REGISTER_RBR)
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#define READ_DLL(S) SerialReadRegister (S, SERIAL_REGISTER_DLL)
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#define READ_DLM(S) SerialReadRegister (S, SERIAL_REGISTER_DLM)
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#define READ_IER(S) SerialReadRegister (S, SERIAL_REGISTER_IER)
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#define READ_IIR(S) SerialReadRegister (S, SERIAL_REGISTER_IIR)
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#define READ_LCR(S) SerialReadRegister (S, SERIAL_REGISTER_LCR)
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#define READ_MCR(S) SerialReadRegister (S, SERIAL_REGISTER_MCR)
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#define READ_LSR(S) SerialReadRegister (S, SERIAL_REGISTER_LSR)
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#define READ_MSR(S) SerialReadRegister (S, SERIAL_REGISTER_MSR)
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#define READ_SCR(S) SerialReadRegister (S, SERIAL_REGISTER_SCR)
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#define WRITE_THR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_THR, D)
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#define WRITE_DLL(S, D) SerialWriteRegister (S, SERIAL_REGISTER_DLL, D)
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#define WRITE_DLM(S, D) SerialWriteRegister (S, SERIAL_REGISTER_DLM, D)
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#define WRITE_IER(S, D) SerialWriteRegister (S, SERIAL_REGISTER_IER, D)
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#define WRITE_FCR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_FCR, D)
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#define WRITE_LCR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_LCR, D)
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#define WRITE_MCR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_MCR, D)
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#define WRITE_LSR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_LSR, D)
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#define WRITE_MSR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_MSR, D)
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#define WRITE_SCR(S, D) SerialWriteRegister (S, SERIAL_REGISTER_SCR, D)
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//
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// Prototypes
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// Driver model protocol interface
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//
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/**
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Check to see if this driver supports the given controller
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@param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param Controller The handle of the controller to test.
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@param RemainingDevicePath A pointer to the remaining portion of a device path.
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@return EFI_SUCCESS This driver can support the given controller
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**/
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EFI_STATUS
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EFIAPI
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SerialControllerDriverSupported (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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/**
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Start to management the controller passed in
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@param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param Controller The handle of the controller to test.
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@param RemainingDevicePath A pointer to the remaining portion of a device path.
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@return EFI_SUCCESS Driver is started successfully
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**/
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EFI_STATUS
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EFIAPI
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SerialControllerDriverStart (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
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);
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/**
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Disconnect this driver with the controller, uninstall related protocol instance
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@param This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
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@param Controller The handle of the controller to test.
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@param NumberOfChildren Number of child device.
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@param ChildHandleBuffer A pointer to the remaining portion of a device path.
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@retval EFI_SUCCESS Operation successfully
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@retval EFI_DEVICE_ERROR Cannot stop the driver successfully
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**/
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EFI_STATUS
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EFIAPI
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SerialControllerDriverStop (
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IN EFI_DRIVER_BINDING_PROTOCOL *This,
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IN EFI_HANDLE Controller,
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IN UINTN NumberOfChildren,
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IN EFI_HANDLE *ChildHandleBuffer
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);
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//
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// Serial I/O Protocol Interface
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//
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/**
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Reset serial device.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@retval EFI_SUCCESS Reset successfully
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@retval EFI_DEVICE_ERROR Failed to reset
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**/
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EFI_STATUS
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EFIAPI
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SerialReset (
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IN EFI_SERIAL_IO_PROTOCOL *This
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);
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/**
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Set new attributes to a serial device.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@param BaudRate The baudrate of the serial device
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@param ReceiveFifoDepth The depth of receive FIFO buffer
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@param Timeout The request timeout for a single char
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@param Parity The type of parity used in serial device
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@param DataBits Number of databits used in serial device
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@param StopBits Number of stopbits used in serial device
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@retval EFI_SUCCESS The new attributes were set
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@retval EFI_INVALID_PARAMETERS One or more attributes have an unsupported value
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@retval EFI_UNSUPPORTED Data Bits can not set to 5 or 6
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@retval EFI_DEVICE_ERROR The serial device is not functioning correctly (no return)
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**/
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EFI_STATUS
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EFIAPI
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SerialSetAttributes (
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IN EFI_SERIAL_IO_PROTOCOL *This,
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IN UINT64 BaudRate,
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IN UINT32 ReceiveFifoDepth,
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IN UINT32 Timeout,
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IN EFI_PARITY_TYPE Parity,
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IN UINT8 DataBits,
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IN EFI_STOP_BITS_TYPE StopBits
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);
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/**
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Set Control Bits.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@param Control Control bits that can be settable
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@retval EFI_SUCCESS New Control bits were set successfully
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@retval EFI_UNSUPPORTED The Control bits wanted to set are not supported
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**/
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EFI_STATUS
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EFIAPI
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SerialSetControl (
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IN EFI_SERIAL_IO_PROTOCOL *This,
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IN UINT32 Control
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);
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/**
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Get ControlBits.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@param Control Control signals of the serial device
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@retval EFI_SUCCESS Get Control signals successfully
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**/
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EFI_STATUS
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EFIAPI
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SerialGetControl (
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IN EFI_SERIAL_IO_PROTOCOL *This,
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OUT UINT32 *Control
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);
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/**
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Write the specified number of bytes to serial device.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@param BufferSize On input the size of Buffer, on output the amount of
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data actually written
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@param Buffer The buffer of data to write
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@retval EFI_SUCCESS The data were written successfully
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_TIMEOUT The write operation was stopped due to timeout
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**/
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EFI_STATUS
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EFIAPI
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SerialWrite (
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IN EFI_SERIAL_IO_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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IN VOID *Buffer
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);
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/**
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Read the specified number of bytes from serial device.
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@param This Pointer to EFI_SERIAL_IO_PROTOCOL
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@param BufferSize On input the size of Buffer, on output the amount of
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data returned in buffer
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@param Buffer The buffer to return the data into
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@retval EFI_SUCCESS The data were read successfully
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@retval EFI_DEVICE_ERROR The device reported an error
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@retval EFI_TIMEOUT The read operation was stopped due to timeout
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**/
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EFI_STATUS
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EFIAPI
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SerialRead (
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IN EFI_SERIAL_IO_PROTOCOL *This,
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IN OUT UINTN *BufferSize,
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OUT VOID *Buffer
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);
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//
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// Internal Functions
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//
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/**
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Use scratchpad register to test if this serial port is present.
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@param SerialDevice Pointer to serial device structure
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@return if this serial port is present
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**/
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BOOLEAN
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SerialPresent (
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IN SERIAL_DEV *SerialDevice
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);
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/**
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Detect whether specific FIFO is full or not.
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@param Fifo A pointer to the Data Structure SERIAL_DEV_FIFO
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@return whether specific FIFO is full or not
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**/
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BOOLEAN
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SerialFifoFull (
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IN SERIAL_DEV_FIFO *Fifo
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);
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|
/**
|
|
Detect whether specific FIFO is empty or not.
|
|
|
|
@param Fifo A pointer to the Data Structure SERIAL_DEV_FIFO
|
|
|
|
@return whether specific FIFO is empty or not
|
|
|
|
**/
|
|
BOOLEAN
|
|
SerialFifoEmpty (
|
|
IN SERIAL_DEV_FIFO *Fifo
|
|
);
|
|
|
|
/**
|
|
Add data to specific FIFO.
|
|
|
|
@param Fifo A pointer to the Data Structure SERIAL_DEV_FIFO
|
|
@param Data the data added to FIFO
|
|
|
|
@retval EFI_SUCCESS Add data to specific FIFO successfully
|
|
@retval EFI_OUT_OF_RESOURCE Failed to add data because FIFO is already full
|
|
|
|
**/
|
|
EFI_STATUS
|
|
SerialFifoAdd (
|
|
IN SERIAL_DEV_FIFO *Fifo,
|
|
IN UINT8 Data
|
|
);
|
|
|
|
/**
|
|
Remove data from specific FIFO.
|
|
|
|
@param Fifo A pointer to the Data Structure SERIAL_DEV_FIFO
|
|
@param Data the data removed from FIFO
|
|
|
|
@retval EFI_SUCCESS Remove data from specific FIFO successfully
|
|
@retval EFI_OUT_OF_RESOURCE Failed to remove data because FIFO is empty
|
|
|
|
**/
|
|
EFI_STATUS
|
|
SerialFifoRemove (
|
|
IN SERIAL_DEV_FIFO *Fifo,
|
|
OUT UINT8 *Data
|
|
);
|
|
|
|
/**
|
|
Reads and writes all available data.
|
|
|
|
@param SerialDevice The device to flush
|
|
|
|
@retval EFI_SUCCESS Data was read/written successfully.
|
|
@retval EFI_OUT_OF_RESOURCE Failed because software receive FIFO is full. Note, when
|
|
this happens, pending writes are not done.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
SerialReceiveTransmit (
|
|
IN SERIAL_DEV *SerialDevice
|
|
);
|
|
|
|
/**
|
|
Read serial port.
|
|
|
|
@param SerialDev Pointer to serial device
|
|
@param Offset Offset in register group
|
|
|
|
@return Data read from serial port
|
|
**/
|
|
UINT8
|
|
SerialReadRegister (
|
|
IN SERIAL_DEV *SerialDev,
|
|
IN UINT32 Offset
|
|
);
|
|
|
|
/**
|
|
Write serial port.
|
|
|
|
@param SerialDev Pointer to serial device
|
|
@param Offset Offset in register group
|
|
@param Data data which is to be written to some serial port register
|
|
**/
|
|
VOID
|
|
SerialWriteRegister (
|
|
IN SERIAL_DEV *SerialDev,
|
|
IN UINT32 Offset,
|
|
IN UINT8 Data
|
|
);
|
|
|
|
|
|
//
|
|
// 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
|
|
SerialComponentNameGetDriverName (
|
|
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
|
|
SerialComponentNameGetControllerName (
|
|
IN EFI_COMPONENT_NAME_PROTOCOL *This,
|
|
IN EFI_HANDLE ControllerHandle,
|
|
IN EFI_HANDLE ChildHandle OPTIONAL,
|
|
IN CHAR8 *Language,
|
|
OUT CHAR16 **ControllerName
|
|
);
|
|
|
|
/**
|
|
Add the component name for the serial io device
|
|
|
|
@param SerialDevice A pointer to the SERIAL_DEV instance.
|
|
@param Uid Unique ID for the serial device.
|
|
**/
|
|
VOID
|
|
AddName (
|
|
IN SERIAL_DEV *SerialDevice,
|
|
IN UINT32 Uid
|
|
);
|
|
|
|
/**
|
|
Checks whether the UART parameters are valid and computes the Divisor.
|
|
|
|
@param ClockRate The clock rate of the serial device used to verify
|
|
the BaudRate. Do not verify the BaudRate if it's 0.
|
|
@param BaudRate The requested baudrate of the serial device.
|
|
@param DataBits Number of databits used in serial device.
|
|
@param Parity The type of parity used in serial device.
|
|
@param StopBits Number of stopbits used in serial device.
|
|
@param Divisor Return the divisor if ClockRate is not 0.
|
|
@param ActualBaudRate Return the actual supported baudrate without
|
|
exceeding BaudRate. NULL means baudrate degradation
|
|
is not allowed.
|
|
If the requested BaudRate is not supported, the routine
|
|
returns TRUE and the Actual Baud Rate when ActualBaudRate
|
|
is not NULL, returns FALSE when ActualBaudRate is NULL.
|
|
|
|
@retval TRUE The UART parameters are valid.
|
|
@retval FALSE The UART parameters are not valid.
|
|
**/
|
|
BOOLEAN
|
|
VerifyUartParameters (
|
|
IN UINT32 ClockRate,
|
|
IN UINT64 BaudRate,
|
|
IN UINT8 DataBits,
|
|
IN EFI_PARITY_TYPE Parity,
|
|
IN EFI_STOP_BITS_TYPE StopBits,
|
|
OUT UINT64 *Divisor,
|
|
OUT UINT64 *ActualBaudRate
|
|
);
|
|
|
|
/**
|
|
Skip the optional Controller device path node and return the
|
|
pointer to the next device path node.
|
|
|
|
@param DevicePath Pointer to the device path.
|
|
@param ContainsControllerNode Returns TRUE if the Controller device path exists.
|
|
@param ControllerNumber Returns the Controller Number if Controller device path exists.
|
|
|
|
@return Pointer to the next device path node.
|
|
**/
|
|
UART_DEVICE_PATH *
|
|
SkipControllerDevicePathNode (
|
|
EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
|
BOOLEAN *ContainsControllerNode,
|
|
UINT32 *ControllerNumber
|
|
);
|
|
|
|
/**
|
|
Check the device path node whether it's the Flow Control node or not.
|
|
|
|
@param[in] FlowControl The device path node to be checked.
|
|
|
|
@retval TRUE It's the Flow Control node.
|
|
@retval FALSE It's not.
|
|
|
|
**/
|
|
BOOLEAN
|
|
IsUartFlowControlDevicePathNode (
|
|
IN UART_FLOW_CONTROL_DEVICE_PATH *FlowControl
|
|
);
|
|
#endif
|