// Process SCSI WRITE10 command
// input:
// pdev - pointer to the USB device handle
// lun - logical unit number
// params - pointer to the buffer with command parameters
static int8_t SCSI_Write10(USBD_HandleTypeDef *pdev, uint8_t lun, uint8_t *params) {
USBD_MSC_BOT_HandleTypeDef *hmsc = (USBD_MSC_BOT_HandleTypeDef *)pdev->pClassData;
if (hmsc->bot_state == USBD_BOT_IDLE) {
// case 8 : Hi <> Do
if (hmsc->cbw.bmFlags & 0x80) {
SCSI_SenseCode(pdev,hmsc->cbw.bLUN,ILLEGAL_REQUEST,INVALID_CDB);
return -1;
}
// Check whether media is ready
if (((USBD_StorageTypeDef *)pdev->pUserData)->IsReady(lun) != 0) {
SCSI_SenseCode(pdev,lun,NOT_READY,MEDIUM_NOT_PRESENT);
return -1;
}
// Check if media is write-protected
if (((USBD_StorageTypeDef *)pdev->pUserData)->IsWriteProtected(lun) != 0) {
SCSI_SenseCode(pdev,lun,NOT_READY,WRITE_PROTECTED);
return -1;
}
hmsc->scsi_blk_addr = (params[2] << 24) | (params[3] << 16) | (params[4] << 8) | params[5];
hmsc->scsi_blk_len = (params[7] << 8) | params[8];
// Check if LBA address is in the right range
if (SCSI_CheckAddressRange(pdev,lun,hmsc->scsi_blk_addr,hmsc->scsi_blk_len) < 0) return -1;
hmsc->scsi_blk_addr *= hmsc->scsi_blk_size;
hmsc->scsi_blk_len *= hmsc->scsi_blk_size;
// cases 3,11,13 : Hn,Ho <> D0
if (hmsc->cbw.dDataLength != hmsc->scsi_blk_len) {
SCSI_SenseCode(pdev,hmsc->cbw.bLUN,ILLEGAL_REQUEST,INVALID_CDB);
return -1;
}
// Prepare endpoint to receive first data packet
hmsc->bot_state = USBD_BOT_DATA_OUT;
USBD_LL_PrepareReceive(pdev,MSC_EPOUT_ADDR,hmsc->bot_data,MIN(hmsc->scsi_blk_len,MSC_MEDIA_PACKET));
} else {
// Write Process ongoing
return SCSI_ProcessWrite(pdev,lun);
}
return 0;
}
static int8_t SCSI_Write10 (uint8_t lun , uint8_t *params)
{
if (MSC_BOT_State == BOT_IDLE) /* Idle */
{
/* case 8 : Hi <> Do */
if ((MSC_BOT_cbw.bmFlags & 0x80) == 0x80)
{
SCSI_SenseCode(MSC_BOT_cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
return -1;
}
/* Check whether Media is ready */
if(USBD_STORAGE_fops->IsReady(lun) !=0 )
{
SCSI_SenseCode(lun,
NOT_READY,
MEDIUM_NOT_PRESENT);
return -1;
}
/* Check If media is write-protected */
if(USBD_STORAGE_fops->IsWriteProtected(lun) !=0 )
{
SCSI_SenseCode(lun,
NOT_READY,
WRITE_PROTECTED);
return -1;
}
SCSI_blk_addr = (params[2] << 24) | \
(params[3] << 16) | \
(params[4] << 8) | \
params[5];
SCSI_blk_len = (params[7] << 8) | \
params[8];
/* check if LBA address is in the right range */
if(SCSI_CheckAddressRange(lun, SCSI_blk_addr, SCSI_blk_len) < 0)
{
return -1; /* error */
}
SCSI_blk_addr *= SCSI_blk_size;
SCSI_blk_len *= SCSI_blk_size;
/* cases 3,11,13 : Hn,Ho <> D0 */
if (MSC_BOT_cbw.dDataLength != SCSI_blk_len)
{
SCSI_SenseCode(MSC_BOT_cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
return -1;
}
/* Prepare EP to receive first data packet */
MSC_BOT_State = BOT_DATA_OUT;
DCD_EP_PrepareRx (cdev,
MSC_OUT_EP,
MSC_BOT_Data,
MIN (SCSI_blk_len, MSC_MEDIA_PACKET));
}
else /* Write Process ongoing */
{
return SCSI_ProcessWrite(lun);
}
return 0;
}
static int8_t SCSI_Write10 (USBD_HandleTypeDef *pdev, uint8_t lun , uint8_t *params)
{
USBD_MSC_BOT_HandleTypeDef *hmsc = pdev->pClassData;
if (hmsc->bot_state == USBD_BOT_IDLE) /* Idle */
{
/* case 8 : Hi <> Do */
if ((hmsc->cbw.bmFlags & 0x80) == 0x80)
{
SCSI_SenseCode(pdev,
hmsc->cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
return -1;
}
/* Check whether Media is ready */
if(((USBD_StorageTypeDef *)pdev->pUserData)->IsReady(lun) !=0 )
{
SCSI_SenseCode(pdev,
lun,
NOT_READY,
MEDIUM_NOT_PRESENT);
return -1;
}
/* Check If media is write-protected */
if(((USBD_StorageTypeDef *)pdev->pUserData)->IsWriteProtected(lun) !=0 )
{
SCSI_SenseCode(pdev,
lun,
NOT_READY,
WRITE_PROTECTED);
return -1;
}
hmsc->scsi_blk_addr_in_blks = (params[2] << 24) | \
(params[3] << 16) | \
(params[4] << 8) | \
params[5];
hmsc->scsi_blk_len = (params[7] << 8) | \
params[8];
/* check if LBA address is in the right range */
if(SCSI_CheckAddressRange(pdev,
lun,
hmsc->scsi_blk_addr_in_blks,
hmsc->scsi_blk_len) < 0)
{
return -1; /* error */
}
hmsc->scsi_blk_len *= hmsc->scsi_blk_size;
/* cases 3,11,13 : Hn,Ho <> D0 */
if (hmsc->cbw.dDataLength != hmsc->scsi_blk_len)
{
SCSI_SenseCode(pdev,
hmsc->cbw.bLUN,
ILLEGAL_REQUEST,
INVALID_CDB);
return -1;
}
/* Prepare EP to receive first data packet */
hmsc->bot_state = USBD_BOT_DATA_OUT;
USBD_LL_PrepareReceive (pdev,
MSC_OUT_EP,
hmsc->bot_data,
MIN (hmsc->scsi_blk_len, MSC_MEDIA_PACKET));
}
else /* Write Process ongoing */
{
return SCSI_ProcessWrite(pdev, lun);
}
return 0;
}