227 lines
5.1 KiB
C
227 lines
5.1 KiB
C
/** @file
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Private definitions of the VirtioRng RNG driver
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Copyright (C) 2016, Linaro Ltd.
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _VIRTIO_SERIAL_DXE_H_
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#define _VIRTIO_SERIAL_DXE_H_
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#include <Protocol/ComponentName.h>
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#include <Protocol/DriverBinding.h>
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#include <Protocol/SerialIo.h>
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#include <IndustryStandard/Virtio.h>
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#include <IndustryStandard/VirtioSerial.h>
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#define VIRTIO_SERIAL_SIG SIGNATURE_32 ('V', 'S', 'I', 'O')
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#define MAX_PORTS 8
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#define MAX_RINGS (MAX_PORTS * 2 + 2)
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#define CTRL_RX_BUFSIZE 128
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#define CTRL_TX_BUFSIZE sizeof(VIRTIO_SERIAL_CONTROL)
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#define PORT_RX_BUFSIZE 128
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#define PORT_TX_BUFSIZE 128
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//
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// Data structures
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//
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typedef struct _VIRTIO_SERIAL_DEV VIRTIO_SERIAL_DEV;
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typedef struct _VIRTIO_SERIAL_RING VIRTIO_SERIAL_RING;
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typedef struct _VIRTIO_SERIAL_PORT VIRTIO_SERIAL_PORT;
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typedef struct _VIRTIO_SERIAL_IO_PROTOCOL VIRTIO_SERIAL_IO_PROTOCOL;
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struct _VIRTIO_SERIAL_RING {
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VRING Ring;
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VOID *RingMap;
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DESC_INDICES Indices; /* Avail Ring */
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UINT16 LastUsedIdx; /* Used Ring */
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UINT32 BufferSize;
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UINT32 BufferCount;
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UINT32 BufferPages;
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UINT8 *Buffers;
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VOID *BufferMap;
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EFI_PHYSICAL_ADDRESS DeviceAddress;
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BOOLEAN Ready;
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};
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struct _VIRTIO_SERIAL_PORT {
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BOOLEAN Ready;
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BOOLEAN Console;
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BOOLEAN DeviceOpen;
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CHAR16 Name[32];
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VIRTIO_SERIAL_IO_PROTOCOL *SerialIo;
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};
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struct _VIRTIO_SERIAL_DEV {
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UINT32 Signature;
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LIST_ENTRY Link;
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EFI_HANDLE DriverBindingHandle;
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EFI_HANDLE DeviceHandle;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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VIRTIO_DEVICE_PROTOCOL *VirtIo;
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EFI_EVENT ExitBoot;
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VIRTIO_SERIAL_CONFIG Config;
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VIRTIO_SERIAL_PORT Ports[MAX_PORTS];
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VIRTIO_SERIAL_RING Rings[MAX_RINGS];
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EFI_EVENT Timer;
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UINT32 NumPorts;
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UINT32 NumConsoles;
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UINT32 NumNamedPorts;
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};
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struct _VIRTIO_SERIAL_IO_PROTOCOL {
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EFI_SERIAL_IO_PROTOCOL SerialIo;
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EFI_SERIAL_IO_MODE SerialIoMode;
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EFI_HANDLE DeviceHandle;
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EFI_DEVICE_PATH_PROTOCOL *DevicePath;
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VIRTIO_SERIAL_DEV *Dev;
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UINT32 PortId;
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UINT8 ReadBuffer[PORT_RX_BUFSIZE];
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UINT32 ReadOffset;
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UINT32 ReadSize;
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UINT8 WriteBuffer[PORT_TX_BUFSIZE];
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UINT32 WriteOffset;
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};
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//
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// VirtioSerial.c
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//
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VOID
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EFIAPI
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LogDevicePath (
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UINT32 Level,
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const CHAR8 *Func,
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CHAR16 *Note,
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EFI_DEVICE_PATH_PROTOCOL *DevicePath
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);
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EFI_STATUS
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EFIAPI
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VirtioSerialTxControl (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 Id,
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IN UINT16 Event,
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IN UINT16 Value
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);
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//
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// VirtioSerialRing.c
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//
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EFI_STATUS
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EFIAPI
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VirtioSerialInitRing (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index,
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IN UINT32 BufferSize
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);
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VOID
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EFIAPI
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VirtioSerialUninitRing (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index
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);
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VOID
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EFIAPI
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VirtioSerialRingFillRx (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index
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);
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VOID
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EFIAPI
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VirtioSerialRingClearTx (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index
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);
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EFI_STATUS
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EFIAPI
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VirtioSerialRingSendBuffer (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index,
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IN VOID *Data,
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IN UINT32 DataSize,
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IN BOOLEAN Notify
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);
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BOOLEAN
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EFIAPI
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VirtioSerialRingHasBuffer (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index
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);
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BOOLEAN
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EFIAPI
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VirtioSerialRingGetBuffer (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT16 Index,
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OUT VOID *Data,
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OUT UINT32 *DataSize
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);
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//
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// VirtioSerialPort.c
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//
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EFI_STATUS
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EFIAPI
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VirtioSerialPortAdd (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 PortId
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);
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VOID
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EFIAPI
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VirtioSerialPortSetConsole (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 PortId
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);
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VOID
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EFIAPI
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VirtioSerialPortSetName (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 PortId,
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IN UINT8 *Name
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);
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VOID
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EFIAPI
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VirtioSerialPortSetDeviceOpen (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 PortId,
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IN UINT16 Value
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);
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VOID
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EFIAPI
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VirtioSerialPortRemove (
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IN OUT VIRTIO_SERIAL_DEV *Dev,
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IN UINT32 PortId
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);
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#endif
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