virtionet.c File Reference

#include <pcie.h>
#include <Hal/AA64/aa64lowlevel.h>
#include <Hal/AA64/gic.h>
#include <Fs/Dev/devinput.h>
#include <Drivers/virtio.h>
#include <Drivers/uart.h>
#include <Mm/pmmngr.h>
#include <aucon.h>
#include <Mm/vmmngr.h>
#include <Hal/AA64/sched.h>

Include dependency graph for virtionet.c:

Classes
struct	VirtioNetCfg

Macros
#define	VIRTIO_F_VERSION_1   (1ull << 32)
#define	RX_BUFFER_COUNT   8
#define	RX_BUFFER_SIZE   2048
#define	VIRTIO_PCI_CAP_ID   0x09
#define	VIRTIO_PCI_CAP_COMMON_CFG   1
#define	VIRTIO_PCI_CAP_DEVICE_CFG   4

Functions
void	AuVirtioNetHandler (int spiNum)
	AuVirtioNetHandler – interrupt handler for virtio-net-dev.
void	AuVirtioNetNotifyQueue (struct VirtioCommonCfg *cfg, uint16_t queueIdx)
	AuVirtioNetNotifyQueue – notify queue.
void	AuVirtioNetRxinitialize (struct VirtioCommonCfg *common)
	AuVirtioNetRxInitialize – initialize rx queue.
void	AuVirtioNetTxinitialize (struct VirtioCommonCfg *common)
	AuVirtioNetTxInitialize – initialize tx queue.
void	AuVirtioNetInitialize (uint64_t device)
	AuVirtioNetInitialize – initialize the virtio network device.

Variables
struct VirtioQueue *	rxqueue
struct VirtioQueue *	txqueue
volatile uint8_t *	notifyBase
uint32_t	notifyOffMultiplier

Detailed Description

BSD 2-Clause License

Copyright (c) 2022-2023, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

BSD 2-Clause License

Copyright (c) 2022-2025, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Macro Definition Documentation

RX_BUFFER_COUNT

#define RX_BUFFER_COUNT   8

RX_BUFFER_SIZE

#define RX_BUFFER_SIZE   2048

VIRTIO_F_VERSION_1

#define VIRTIO_F_VERSION_1   (1ull << 32)

VIRTIO_PCI_CAP_COMMON_CFG

#define VIRTIO_PCI_CAP_COMMON_CFG   1

VIRTIO_PCI_CAP_DEVICE_CFG

#define VIRTIO_PCI_CAP_DEVICE_CFG   4

VIRTIO_PCI_CAP_ID

#define VIRTIO_PCI_CAP_ID   0x09

Function Documentation

AuVirtioNetHandler()

void AuVirtioNetHandler

(

int

spiNum

)

AuVirtioNetHandler – interrupt handler for virtio-net-dev.

Parameters

spiNum

– shared peripheral interrupt number passed by system

AuVirtioNetInitialize()

void AuVirtioNetInitialize

(

uint64_t

device

)

AuVirtioNetInitialize – initialize the virtio network device.

Parameters

device

– device address passed by PCIe

feature negotiation

enable RX+TX queue

AuVirtioNetNotifyQueue()

void AuVirtioNetNotifyQueue	(	struct VirtioCommonCfg *	cfg,
		uint16_t	queueIdx
	)

AuVirtioNetNotifyQueue – notify queue.

Parameters

cfg	– Pointer to common queue
queueIdx	– queue number, zero – rx queue, one – tx queue

AuVirtioNetRxinitialize()

void AuVirtioNetRxinitialize

(

struct VirtioCommonCfg *

common

)

AuVirtioNetRxInitialize – initialize rx queue.

Parameters

common

– pointer to virtio common config

AuVirtioNetTxinitialize()

void AuVirtioNetTxinitialize

(

struct VirtioCommonCfg *

common

)

AuVirtioNetTxInitialize – initialize tx queue.

Parameters

common

– pointer to virtio common config

Variable Documentation

notifyBase

volatile uint8_t* notifyBase

notifyOffMultiplier

uint32_t notifyOffMultiplier

rxqueue

struct VirtioQueue* rxqueue

txqueue

struct VirtioQueue* txqueue