drivers/serial/Kconfig.virtio_console

# Copyright (c) 2025 Antmicro <www.antmicro.com>
# SPDX-License-Identifier: Apache-2.0

menuconfig UART_VIRTIO_CONSOLE
	bool "VIRTIO console paravirtualization device driver"
	default y
	depends on VIRTIO && DT_HAS_VIRTIO_CONSOLE_ENABLED && \
		!(X86_VERY_EARLY_CONSOLE || EARLY_CONSOLE || BOOT_BANNER)

if UART_VIRTIO_CONSOLE

config UART_VIRTIO_CONSOLE_RX_BUFSIZE
	int "VIRTIO console receive buffer length"
	default 1

config UART_VIRTIO_CONSOLE_TX_BUFSIZE
	int "VIRTIO console transmit buffer length"
	default 2

config UART_VIRTIO_CONSOLE_F_MULTIPORT
	bool "Support multiple VIRTIO console ports"
	default n
	help
	  The VIRTIO console device can support multiple i/o ports simultaneously
	  (up to 31 in the case of QEMU). Select to enable this feature. Otherwise
	  only one will be used.

if UART_VIRTIO_CONSOLE_F_MULTIPORT

config UART_VIRTIO_CONSOLE_RX_CONTROL_BUFSIZE
	int "VIRTIO console receive buffer length (for control messages)"
	default 16
	help
	  This will set the size of the control receive buffer and its corresponding
	  virtqueue. Keep in mind that control messages are sent in quick succession
	  and thus some may never be received if this value is too low. Try increasing
	  this value if you're experiencing issues with the multiport feature.

config UART_VIRTIO_CONSOLE_TX_CONTROL_BUFSIZE
	int "VIRTIO console transmit buffer length (for control messages)"
	default 8
	help
	  This will set the size of the control transmit buffer and its corresponding
	  virtqueue. Keep in mind that control messages are sent in quick succession
	  and this buffer may fill up fast if this value is too low. Try increasing
	  this value if you're experiencing issues with the multiport feature.

endif

config UART_VIRTIO_CONSOLE_NAME_BUFSIZE
	int "VIRTIO console maximum port name length"
	default 0 if UART_LOG_LEVEL < 3
	default 16
	help
	  Ports can be assigned human-readable names, which are then printed in logs.

endif