virtioblk.c File Reference

#include <dtb.h>
#include <aucon.h>
#include <kernelAA64.h>
#include <_null.h>
#include <Hal/AA64/aa64lowlevel.h>
#include <string.h>
#include <Mm/pmmngr.h>
#include <Mm/vmmngr.h>
#include <Mm/kmalloc.h>
#include <pcie.h>
#include <Drivers/virtio.h>
#include <Drivers/uart.h>

Include dependency graph for virtioblk.c:

Classes
struct	VirtioBlkReqHeader
struct	VirtioBlkConfig

Macros
#define	VIRTIO_BLK_T_IN   0
#define	VIRTIO_BLK_T_OUT   1
#define	VIRTIO_BLK_S_OK   0
#define	VIRTIO_BLK_SECTOR_SIZE   512
#define	VIRTIO_BLK_STATUS_OFFSET   64

Functions
bool	AuVirtioBlkReadSector (uint64_t sector, void *bufVirt, uint64_t bufPhys)
	AuVirtioBlkReadSector – read one 512-byte sector into buf.
bool	AuVirtioBlkWriteSector (uint64_t sector, void *bufVirt, uint64_t bufPhys)
	AuVirtioBlkWriteSector – write one 512-byte sector from buf.
void	AuVirtioBlkInitialize (uint64_t device, int bus, int dev, int func)
	AuVirtioBlkInitialize – initialize the virtio block device.

Detailed Description

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

VIRTIO_BLK_S_OK

#define VIRTIO_BLK_S_OK   0

VIRTIO_BLK_SECTOR_SIZE

#define VIRTIO_BLK_SECTOR_SIZE   512

VIRTIO_BLK_STATUS_OFFSET

#define VIRTIO_BLK_STATUS_OFFSET   64

VIRTIO_BLK_T_IN

#define VIRTIO_BLK_T_IN   0

VIRTIO_BLK_T_OUT

#define VIRTIO_BLK_T_OUT   1

Function Documentation

AuVirtioBlkInitialize()

void AuVirtioBlkInitialize	(	uint64_t	device,
		int	bus,
		int	dev,
		int	func
	)

AuVirtioBlkInitialize – initialize the virtio block device.

Parameters

device	– pcie config space address
bus,dev,func	– pcie location of the device

AuVirtioBlkReadSector()

bool AuVirtioBlkReadSector	(	uint64_t	sector,
		void *	bufVirt,
		uint64_t	bufPhys
	)

AuVirtioBlkReadSector – read one 512-byte sector into buf.

AuVirtioBlkWriteSector()

bool AuVirtioBlkWriteSector	(	uint64_t	sector,
		void *	bufVirt,
		uint64_t	bufPhys
	)

AuVirtioBlkWriteSector – write one 512-byte sector from buf.