📄 hostrbc.c
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** Descriptions: 启动或停止设备(LUN)
** input parameters: ucInterfaceIndex : 接口号
** ucLunIndex : LUN号
** ucStatus : 状态,启动(RBC_MAKEREADY)或停止(RBC_STOPMEDIUM) LUN
** output parameters: None
** Returned value: 错误代码,若返回MS_ERR_SUCESS, 说明执行成功, 否则执行失败
*********************************************************************************************************/
USB_INT8U rbcStartStopUnit (USB_INT16U ucInterfaceIndex,
USB_INT8U ucLunIndex,
USB_INT8U ucStatus)
{
__BULK_ONLY_CBW cbwInq;
USB_INT8U ucErrCode;
OS_ENTER_CRITICAL();
if (__GbHostMsExitReq) {
OS_EXIT_CRITICAL();
return MS_ERR_EXIT_REQ;
}
__GucMsCmdCnt++;
OS_EXIT_CRITICAL();
usbMemSet(&cbwInq, 0 , sizeof(__BULK_ONLY_CBW));
/*
* 单批量传输的特征码:0x43425355(小端模式), 即:"USBC"(大端模式)
*/
cbwInq.dCBWSignature0 = 0x55; /* 'U' */
cbwInq.dCBWSignature1 = 0x53; /* 'S' */
cbwInq.dCBWSignature2 = 0x42; /* 'B' */
cbwInq.dCBWSignature3 = 0x43; /* 'C' */
/*
* 传输标志位,应为随机数,
* 但为加快程序执行速度,此处固定为0x01,0x02,0x03,0x04,而不是产生随机数
*/
cbwInq.dCBWTag0 = 0x01;
cbwInq.dCBWTag1 = 0x02;
cbwInq.dCBWTag2 = 0x03;
cbwInq.dCBWTag3 = 0x04;
/*
* CBW 和 CSW 间要传输的数据量
*/
cbwInq.dCBWDataTransferLength0 = 0;
cbwInq.dCBWDataTransferLength1 = 0;
cbwInq.dCBWDataTransferLength2 = 0;
cbwInq.dCBWDataTransferLength3 = 0;
cbwInq.bmCBWFlags = 0x80; /* 方向: BULK IN */
cbwInq.bCBWLUN = (USB_INT8U)(ucLunIndex & 0x0F);
cbwInq.bCBWCBLength = 6;
cbwInq.CBWCB[0] = SCSI_START_STOP; /* 操作码 */
cbwInq.CBWCB[4] = (USB_INT8U)(ucStatus & 0x03);
ucErrCode = __boSendCommand (&cbwInq, NULL);
if (ucErrCode == MS_ERR_CSW) {
__boMassStorReset(ucInterfaceIndex);
OS_ENTER_CRITICAL();
__GucMsCmdCnt--;
OS_EXIT_CRITICAL();
return SCSI_ERR_CMDEXE;
}
OS_ENTER_CRITICAL();
__GucMsCmdCnt--;
OS_EXIT_CRITICAL();
return ucErrCode;
}
/*********************************************************************************************************
** Function name: rbcRead10
** Descriptions: 读取数据
** input parameters: usInterface : 接口号
** ucLunIndex : LUN号
** uiLba : 块地址
** uiTranLen : 要读取的块数
** output parameters: pucData : 接收数据缓冲区
** Returned value: 错误代码,若返回MS_ERR_SUCESS, 说明执行成功, 否则执行失败
*********************************************************************************************************/
USB_INT8U rbcRead10 (USB_INT16U usInterface,
USB_INT8U ucLunIndex,
USB_INT32U uiLba, /* LBA,即逻辑块地址 */
USB_INT32U uiTranLen, /* 要读取的数据长度(块数) */
USB_INT8U *pucData) /* 接收数据缓冲区 */
{
__BULK_ONLY_CBW cbwInq;
USB_INT8U ucErrCode;
USB_INT32U uiCurLen;
USB_INT32U uiTotalLen;
if ((pucData == NULL) || (uiTranLen == 0) || (ucLunIndex >= __msInfo.ucMaxLun) ||
(uiLba + uiTranLen > __msInfo.msLunInfo[ucLunIndex].uiMaxLba)) {
return MS_ERR_INVALID_PARAM;
}
OS_ENTER_CRITICAL();
if (__GbHostMsExitReq) {
OS_EXIT_CRITICAL();
return MS_ERR_EXIT_REQ;
}
__GucMsCmdCnt++;
OS_EXIT_CRITICAL();
usbMemSet(&cbwInq, 0 , sizeof(__BULK_ONLY_CBW));
/*
* 单批量传输的特征码:0x43425355(小端模式), 即:"USBC"(大端模式)
*/
cbwInq.dCBWSignature0 = 0x55; /* 'U' */
cbwInq.dCBWSignature1 = 0x53; /* 'S' */
cbwInq.dCBWSignature2 = 0x42; /* 'B' */
cbwInq.dCBWSignature3 = 0x43; /* 'C' */
/*
* 传输标志位,应为随机数,
* 但为加快程序执行速度,此处固定为0x01,0x02,0x03,0x04,而不是产生随机数
*/
cbwInq.dCBWTag0 = 0x01;
cbwInq.dCBWTag1 = 0x02;
cbwInq.dCBWTag2 = 0x03;
cbwInq.dCBWTag3 = 0x04;
cbwInq.bmCBWFlags = 0x80; /* 方向: BULK IN */
cbwInq.bCBWLUN = (USB_INT8U)(__msInfo.ucUsedLun[ucLunIndex] & 0x0F);
cbwInq.bCBWCBLength = 10;
cbwInq.CBWCB[0] = 0x28; /* 操作码 */
cbwInq.CBWCB[1] = (USB_INT8U)((__msInfo.ucUsedLun[ucLunIndex] & 0x07) << 5);
uiTotalLen = 0;
do {
if (__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock == 512) {
if (((uiTranLen - uiTotalLen) * 512) > 512 * 1024) {
uiCurLen = (512 * 1024) / 512;
} else {
uiCurLen = uiTranLen - uiTotalLen;
}
} else {
if ((uiTranLen - uiTotalLen) * __msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock
> 512 * 1024) {
uiCurLen = (512 * 1024) / __msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock;
} else {
uiCurLen = uiTranLen - uiTotalLen;
}
}
/*
* CBW 和 CSW 间要传输的数据量
*/
if (__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock == 512) {
cbwInq.dCBWDataTransferLength0 = __MSLSB(uiCurLen * 512, 0);
cbwInq.dCBWDataTransferLength1 = __MSLSB(uiCurLen * 512, 1);
cbwInq.dCBWDataTransferLength2 = __MSLSB(uiCurLen * 512, 2);
cbwInq.dCBWDataTransferLength3 = __MSLSB(uiCurLen * 512, 3);
} else {
cbwInq.dCBWDataTransferLength0 = __MSLSB(uiCurLen * \
__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock, 0);
cbwInq.dCBWDataTransferLength1 = __MSLSB(uiCurLen * \
__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock, 1);
cbwInq.dCBWDataTransferLength2 = __MSLSB(uiCurLen * \
__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock, 2);
cbwInq.dCBWDataTransferLength3 = __MSLSB(uiCurLen * \
__msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock, 3);
}
cbwInq.CBWCB[2] = __MSLSB(uiLba, 3);
cbwInq.CBWCB[3] = __MSLSB(uiLba, 2);
cbwInq.CBWCB[4] = __MSLSB(uiLba, 1);
cbwInq.CBWCB[5] = __MSLSB(uiLba, 0);
cbwInq.CBWCB[7] = __MSLSB(uiCurLen, 1);
cbwInq.CBWCB[8] = __MSLSB(uiCurLen, 0);
ucErrCode = __boSendCommand(&cbwInq, pucData);
if (ucErrCode != MS_ERR_SUCESS) {
if (ucErrCode == MS_ERR_CSW) {
ucErrCode = rbcRequestSense (ucLunIndex);
if ((ucErrCode != MS_ERR_SUCESS) && (ucErrCode != 0x06)) {
__boMassStorReset(usInterface);
break;
}
} else {
__boMassStorReset(usInterface);
break;
}
}
uiTotalLen = (USB_INT32U)(uiTotalLen + uiCurLen);
uiLba = (USB_INT32U)(uiLba + uiCurLen);
pucData = pucData + uiCurLen * __msInfo.msLunInfo[ucLunIndex].uiBytesPerBlock;
} while (uiTotalLen < uiTranLen);
OS_ENTER_CRITICAL();
__GucMsCmdCnt--;
OS_EXIT_CRITICAL();
return ucErrCode;
}
/*********************************************************************************************************
** Function name: rbcWrite10
** Descriptions: 读取数据
** input parameters: usInterface : 接口号
** ucLunIndex : LUN号
** uiLba : 块地址
** uiTranLen : 要写的块数
** output parameters: pucData : 写数据缓冲区
** Returned value: 错误代码,若返回MS_ERR_SUCESS, 说明执行成功, 否则执行失败
*********************************************************************************************************/
USB_INT8U rbcWrite10 (USB_INT16U usInterface,
USB_INT8U ucLunIndex,
USB_INT32U uiLba, /* LBA,即逻辑块地址 */
USB_INT32U uiTranLen, /* 要读取的数据长度 */
USB_INT8U *pucData) /* 接收数据缓冲区 */
{
USB_INT8U ucErrCode;
__BULK_ONLY_CBW cbwInq;
USB_INT32U uiCurLen;
USB_INT32U uiTotalLen;
if ((pucData == NULL) || (uiTranLen == 0) || (ucLunIndex >= __msInfo.ucMaxLun) ||
(uiLba + uiTranLen > __msInfo.msLunInfo[ucLunIndex].uiMaxLba)) {
return MS_ERR_INVALID_PARAM;
}
OS_ENTER_CRITICAL();
if (__GbHostMsExitReq) {
OS_EXIT_CRITICAL();
return MS_ERR_EXIT_REQ;
}
__GucMsCmdCnt++;
OS_EXIT_CRITICAL();
usbMemSet(&cbwInq, 0 , sizeof(__BULK_ONLY_CBW));
/*
* 单批量传输的特征码:0x43425355(小端模式), 即:"USBC"(大端模式)
*/
cbwInq.dCBWSignature0 = 0x55; /* 'U' */
cbwInq.dCBWSignature1 = 0x53; /* 'S' */
cbwInq.dCBWSignature2 = 0x42; /* 'B' */
cbwInq.dCBWSignature3 = 0x43; /* 'C' */
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