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