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/* $Id: scsiinline.h $ */
/** @file
* VirtualBox: SCSI inline helpers used by devices, drivers, etc.
*/
/*
* Copyright (C) 2006-2020 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
#ifndef VBOX_INCLUDED_scsiinline_h
#define VBOX_INCLUDED_scsiinline_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <iprt/stdint.h>
/** @defgroup grp_scsi_inline The SCSI inline helpers
* @{
*/
/**
* Converts a given 16bit value to big endian and stores it in the given buffer.
*
* @returns nothing.
* @param pbBuf The buffer to store the value into.
* @param u16Val The value to store.
*/
DECLINLINE(void) scsiH2BE_U16(uint8_t *pbBuf, uint16_t u16Val)
{
pbBuf[0] = u16Val >> 8;
pbBuf[1] = u16Val;
}
/**
* Converts a given 24bit value to big endian and stores it in the given buffer.
*
* @returns nothing.
* @param pbBuf The buffer to store the value into.
* @param u32Val The value to store.
*/
DECLINLINE(void) scsiH2BE_U24(uint8_t *pbBuf, uint32_t u32Val)
{
pbBuf[0] = u32Val >> 16;
pbBuf[1] = u32Val >> 8;
pbBuf[2] = u32Val;
}
/**
* Converts a given 32bit value to big endian and stores it in the given buffer.
*
* @returns nothing.
* @param pbBuf The buffer to store the value into.
* @param u32Val The value to store.
*/
DECLINLINE(void) scsiH2BE_U32(uint8_t *pbBuf, uint32_t u32Val)
{
pbBuf[0] = u32Val >> 24;
pbBuf[1] = u32Val >> 16;
pbBuf[2] = u32Val >> 8;
pbBuf[3] = u32Val;
}
/**
* Converts a given 64bit value to big endian and stores it in the given buffer.
*
* @returns nothing.
* @param pbBuf The buffer to store the value into.
* @param u64Val The value to store.
*/
DECLINLINE(void) scsiH2BE_U64(uint8_t *pbBuf, uint64_t u64Val)
{
pbBuf[0] = u64Val >> 56;
pbBuf[1] = u64Val >> 48;
pbBuf[2] = u64Val >> 40;
pbBuf[3] = u64Val >> 32;
pbBuf[4] = u64Val >> 24;
pbBuf[5] = u64Val >> 16;
pbBuf[6] = u64Val >> 8;
pbBuf[7] = u64Val;
}
/**
* Returns a 16bit value read from the given buffer converted to host endianess.
*
* @returns The converted 16bit value.
* @param pbBuf The buffer to read the value from.
*/
DECLINLINE(uint16_t) scsiBE2H_U16(const uint8_t *pbBuf)
{
return (pbBuf[0] << 8) | pbBuf[1];
}
/**
* Returns a 24bit value read from the given buffer converted to host endianess.
*
* @returns The converted 24bit value as a 32bit unsigned integer.
* @param pbBuf The buffer to read the value from.
*/
DECLINLINE(uint32_t) scsiBE2H_U24(const uint8_t *pbBuf)
{
return (pbBuf[0] << 16) | (pbBuf[1] << 8) | pbBuf[2];
}
/**
* Returns a 32bit value read from the given buffer converted to host endianess.
*
* @returns The converted 32bit value.
* @param pbBuf The buffer to read the value from.
*/
DECLINLINE(uint32_t) scsiBE2H_U32(const uint8_t *pbBuf)
{
return (pbBuf[0] << 24) | (pbBuf[1] << 16) | (pbBuf[2] << 8) | pbBuf[3];
}
/**
* Returns a 64bit value read from the given buffer converted to host endianess.
*
* @returns The converted 64bit value.
* @param pbBuf The buffer to read the value from.
*/
DECLINLINE(uint64_t) scsiBE2H_U64(const uint8_t *pbBuf)
{
return ((uint64_t)pbBuf[0] << 56)
| ((uint64_t)pbBuf[1] << 48)
| ((uint64_t)pbBuf[2] << 40)
| ((uint64_t)pbBuf[3] << 32)
| ((uint64_t)pbBuf[4] << 24)
| ((uint64_t)pbBuf[5] << 16)
| ((uint64_t)pbBuf[6] << 8)
| (uint64_t)pbBuf[7];
}
/**
* Converts the given LBA number to the MSF (Minutes:Seconds:Frames) format
* and stores it in the given buffer.
*
* @returns nothing.
* @param pbBuf The buffer to store the value into.
* @param iLBA The LBA to convert.
*/
DECLINLINE(void) scsiLBA2MSF(uint8_t *pbBuf, uint32_t iLBA)
{
iLBA += 150;
pbBuf[0] = (iLBA / 75) / 60;
pbBuf[1] = (iLBA / 75) % 60;
pbBuf[2] = iLBA % 75;
}
/**
* Converts a MSF formatted address value read from the given buffer
* to an LBA number.
*
* @returns The LBA number.
* @param pbBuf The buffer to read the MSF formatted address
* from.
*/
DECLINLINE(uint32_t) scsiMSF2LBA(const uint8_t *pbBuf)
{
return (pbBuf[0] * 60 + pbBuf[1]) * 75 + pbBuf[2] - 150;
}
/**
* Copies a given string to the given destination padding all unused space
* in the destination with spaces.
*
* @returns nothing.
* @param pbDst Where to store the string padded with spaces.
* @param pbSrc The string to copy.
* @param cbSize Size of the destination buffer.
*/
DECLINLINE(void) scsiPadStr(uint8_t *pbDst, const char *pbSrc, uint32_t cbSize)
{
uint32_t i;
for (i = 0; i < cbSize; i++)
{
if (*pbSrc)
pbDst[i] = *pbSrc++;
else
pbDst[i] = ' ';
}
}
/**
* Copies a given string to the given destination padding all unused space
* in the destination with spaces.
*
* @returns nothing.
* @param pbDst Where to store the string padded with spaces.
* @param pbSrc The string to copy.
* @param cbSize Size of the destination buffer.
*/
DECLINLINE(void) scsiPadStrS(int8_t *pbDst, const char *pbSrc, uint32_t cbSize)
{
uint32_t i;
for (i = 0; i < cbSize; i++)
{
if (*pbSrc)
pbDst[i] = *pbSrc++;
else
pbDst[i] = ' ';
}
}
/** @} */
#endif /* !VBOX_INCLUDED_scsiinline_h */
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