IOReturn
IOSCSITape::WriteFilemarks(int count)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnError;
SCSITaskStatus taskStatus = kSCSITaskStatus_No_Status;
task = GetSCSITask();
require((task != 0), ErrorExit);
flags |= ST_WRITTEN_TOGGLE;
if (WRITE_FILEMARKS_6(task, 0x0, 0x0, count, 0) == true)
taskStatus = DoSCSICommand(task, SCSI_MOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
status = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return status;
}
int
DoReadCapacity(UInt32 id, UInt32 bus, UInt32 *blockCount, UInt32 *blockSize)
{
OSErr status;
Str255 errorText;
static const SCSI_10_Byte_Command gCapacityCommand = {
kScsiCmdReadCapacity, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
SCSI_Sense_Data senseData;
DeviceIdent scsiDevice;
SCSI_Capacity_Data capacityData;
UInt32 temp;
int rtn_value;
scsiDevice.diReserved = 0;
scsiDevice.bus = bus;
scsiDevice.targetID = id;
scsiDevice.LUN = 0;
CLEAR(capacityData);
status = DoSCSICommand(
scsiDevice,
"\pRead Capacity",
(SCSI_CommandPtr) &gCapacityCommand,
(Ptr) &capacityData,
sizeof (SCSI_Capacity_Data),
scsiDirectionIn,
NULL,
&senseData,
errorText
);
if (status == noErr) {
temp = capacityData.lbn4;
temp = (temp << 8) | capacityData.lbn3;
temp = (temp << 8) | capacityData.lbn2;
temp = (temp << 8) | capacityData.lbn1;
*blockCount = temp;
temp = capacityData.len4;
temp = (temp << 8) | capacityData.len3;
temp = (temp << 8) | capacityData.len2;
temp = (temp << 8) | capacityData.len1;
*blockSize = temp;
rtn_value = 1;
} else {
rtn_value = 0;
}
return rtn_value;
}
int
SCSI_ReadBlock(UInt32 id, UInt32 bus, UInt32 block_size, UInt32 block, UInt8 *address)
{
OSErr status;
Str255 errorText;
char* msg;
static SCSI_10_Byte_Command gReadCommand = {
kScsiCmdRead10, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
SCSI_Sense_Data senseData;
DeviceIdent scsiDevice;
int rtn_value;
long count;
//printf("scsi read %d:%d block %d size %d\n", bus, id, block, block_size);
scsiDevice.diReserved = 0;
scsiDevice.bus = bus;
scsiDevice.targetID = id;
scsiDevice.LUN = 0;
gReadCommand.lbn4 = (block >> 24) & 0xFF;
gReadCommand.lbn3 = (block >> 16) & 0xFF;
gReadCommand.lbn2 = (block >> 8) & 0xFF;
gReadCommand.lbn1 = block & 0xFF;
count = 1;
gReadCommand.len2 = (count >> 8) & 0xFF;
gReadCommand.len1 = count & 0xFF;
status = DoSCSICommand(
scsiDevice,
"\pRead",
(SCSI_CommandPtr) &gReadCommand,
(Ptr) address,
count * block_size,
scsiDirectionIn,
NULL,
&senseData,
errorText
);
if (status == noErr) {
rtn_value = 1;
} else {
rtn_value = 0;
}
return rtn_value;
}
IOReturn
IOSCSITape::GetDeviceBlockLimits(void)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnError;
UInt8 blockLimitsData[6] = { 0 };
SCSITaskStatus taskStatus = kSCSITaskStatus_DeliveryFailure;
IOMemoryDescriptor * dataBuffer = NULL;
dataBuffer = IOMemoryDescriptor::withAddress(&blockLimitsData,
sizeof(blockLimitsData),
kIODirectionIn);
require ((dataBuffer != 0), ErrorExit);
task = GetSCSITask();
require ((task != 0), ErrorExit);
if (READ_BLOCK_LIMITS(task, dataBuffer, 0x00) == true)
taskStatus = DoSCSICommand(task, SCSI_NOMOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
{
// blkgran = blockLimitsData[0] & 0x1F;
blkmin =
(blockLimitsData[4] << 8) |
blockLimitsData[5];
blkmax =
(blockLimitsData[1] << 16) |
(blockLimitsData[2] << 8) |
blockLimitsData[3];
STATUS_LOG("min/max block size: %d/%d", blkmin, blkmax);
status = kIOReturnSuccess;
}
ReleaseSCSITask(task);
dataBuffer->release();
ErrorExit:
return status;
}
int
DoInquiry(UInt32 id, UInt32 bus, UInt32 *devType)
{
OSErr status;
Str255 errorText;
static const SCSI_6_Byte_Command gInquiryCommand = {
kScsiCmdInquiry, 0, 0, 0, kRequiredSCSIinquiryLength, 0
};
SCSI_Sense_Data senseData;
DeviceIdent scsiDevice;
SCSI_Inquiry_Data inquiryData;
UInt32 temp;
int rtn_value;
scsiDevice.diReserved = 0;
scsiDevice.bus = bus;
scsiDevice.targetID = id;
scsiDevice.LUN = 0;
CLEAR(inquiryData);
status = DoSCSICommand(
scsiDevice,
"\pInquiry",
(SCSI_CommandPtr) &gInquiryCommand,
(Ptr) &inquiryData,
kRequiredSCSIinquiryLength,
scsiDirectionIn,
NULL,
&senseData,
errorText
);
if (status == noErr) {
*devType = inquiryData.devType & kScsiDevTypeMask;
rtn_value = 1;
} else {
rtn_value = 0;
}
return rtn_value;
}
IOReturn
IOSCSITape::SetDeviceDetails(SCSI_ModeSense_Default *modeData)
{
IOReturn status = kIOReturnError;
IOMemoryDescriptor * dataBuffer = NULL;
SCSITaskIdentifier task = NULL;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeviceNotResponding;
dataBuffer = IOMemoryDescriptor::withAddress(modeData,
sizeof(SCSI_ModeSense_Default),
kIODirectionOut);
require((dataBuffer != 0), ErrorExit);
task = GetSCSITask();
require((task != 0), ErrorExit);
if (MODE_SELECT_6(task,
dataBuffer,
0x0, // PF
0x0, // SP
sizeof(SCSI_ModeSense_Default),
0x00) == true)
{
taskStatus = DoSCSICommand(task, SCSI_NOMOTION_TIMEOUT);
}
if (taskStatus == kSCSITaskStatus_GOOD)
{
status = kIOReturnSuccess;
}
ReleaseSCSITask(task);
dataBuffer->release();
ErrorExit:
return status;
}
int
DoTestUnitReady(UInt8 targetID, int bus)
{
OSErr status;
Str255 errorText;
char* msg;
static const SCSI_6_Byte_Command gTestUnitReadyCommand = {
kScsiCmdTestUnitReady, 0, 0, 0, 0, 0
};
SCSI_Sense_Data senseData;
DeviceIdent scsiDevice;
int rtn_value;
scsiDevice.diReserved = 0;
scsiDevice.bus = bus;
scsiDevice.targetID = targetID;
scsiDevice.LUN = 0;
status = DoSCSICommand(
scsiDevice,
"\pTest Unit Ready",
(SCSI_CommandPtr) &gTestUnitReadyCommand,
NULL,
0,
scsiDirectionNone,
NULL,
&senseData,
errorText
);
if (status == scsiNonZeroStatus) {
rtn_value = -1;
} else if (status != noErr) {
rtn_value = 0;
} else {
rtn_value = 1;
}
return rtn_value;
}
IOReturn
IOSCSITape::LoadUnload(int loadUnload)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnError;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeviceNotResponding;
task = GetSCSITask();
require((task != 0), ErrorExit);
if (LOAD_UNLOAD(task, 0, 0, 0, 0, loadUnload, 0) == true)
taskStatus = DoSCSICommand(task, SCSI_MOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
status = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return status;
}
IOReturn
IOSCSITape::Space(SCSISpaceCode type, int count)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnError;
SCSITaskStatus taskStatus = kSCSITaskStatus_No_Status;
task = GetSCSITask();
require((task != 0), ErrorExit);
if (SPACE_6(task, type, count, 0) == true)
taskStatus = DoSCSICommand(task, SCSI_MOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
status = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return status;
}
IOReturn
IOSCSITape::Rewind(void)
{
IOReturn status = kIOReturnError;
SCSITaskIdentifier task = NULL;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeliveryFailure;
task = GetSCSITask();
require ((task != 0), ErrorExit);
if (REWIND(task, 0, 0) == true)
taskStatus = DoSCSICommand(task, SCSI_MOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
status = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return status;
}
IOReturn
IOSCSITape::TestUnitReady(void)
{
SCSITaskIdentifier task = NULL;
IOReturn result = kIOReturnError;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeviceNotResponding;
task = GetSCSITask();
require((task != 0), ErrorExit);
if (TEST_UNIT_READY(task, 0x00) == true)
taskStatus = DoSCSICommand(task, SCSI_NOMOTION_TIMEOUT);
if (taskStatus == kSCSITaskStatus_GOOD)
result = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return result;
}
/*
* GetDeviceDetails()
* Get mode sense details and set device parameters.
*
* Would have ideally liked to use super::GetModeSense() but it appears
* to set the DBD bit and we need the descriptor values for density,
* etc.
*/
IOReturn
IOSCSITape::GetDeviceDetails(void)
{
IOReturn status = kIOReturnError;
SCSITaskIdentifier task = NULL;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeviceNotResponding;
IOMemoryDescriptor * dataBuffer = NULL;
SCSI_ModeSense_Default modeData = { 0 };
dataBuffer = IOMemoryDescriptor::withAddress(&modeData,
sizeof(modeData),
kIODirectionIn);
require((dataBuffer != 0), ErrorExit);
task = GetSCSITask();
require((task != 0), ErrorExit);
if (MODE_SENSE_6(task,
dataBuffer,
0x0,
0x0,
0x00,
sizeof(SCSI_ModeSense_Default),
0x00) == true)
{
taskStatus = DoSCSICommand(task, SCSI_NOMOTION_TIMEOUT);
}
if (taskStatus == kSCSITaskStatus_GOOD)
{
/* copy mode data for next MODE SELECT */
bcopy(&modeData, &lastModeData, sizeof(SCSI_ModeSense_Default));
blksize =
(modeData.descriptor.BLOCK_LENGTH[0] << 16) |
(modeData.descriptor.BLOCK_LENGTH[1] << 8) |
modeData.descriptor.BLOCK_LENGTH[2];
density = modeData.descriptor.DENSITY_CODE;
flags &= ~(ST_READONLY | ST_BUFF_MODE);
if (modeData.header.DEVICE_SPECIFIC_PARAMETER & SMH_DSP_WRITE_PROT)
flags |= ST_READONLY;
if (modeData.header.DEVICE_SPECIFIC_PARAMETER & SMH_DSP_BUFF_MODE)
flags |= ST_BUFF_MODE;
STATUS_LOG("density code: %d, %d-byte blocks, write-%s, %sbuffered",
density, blksize,
flags & ST_READONLY ? "protected" : "enabled",
flags & ST_BUFF_MODE ? "" : "un");
status = kIOReturnSuccess;
}
ReleaseSCSITask(task);
dataBuffer->release();
ErrorExit:
return status;
}
IOReturn
IOSCSITape::ReadWrite(IOMemoryDescriptor *dataBuffer, int *realizedBytes)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnNoResources;
SCSITaskStatus taskStatus = kSCSITaskStatus_No_Status;
bool cmdStatus = false;
int transferSize = 0;
require((dataBuffer != 0), ErrorExit);
transferSize = dataBuffer->getLength();
if (IsFixedBlockSize())
{
if (transferSize % blksize)
{
STATUS_LOG("must be multiple of block size");
return kIOReturnNotAligned;
}
transferSize /= blksize;
}
task = GetSCSITask();
require((task != 0), ErrorExit);
if (dataBuffer->getDirection() == kIODirectionIn)
{
cmdStatus = READ_6(
task,
dataBuffer,
blksize,
0x0,
IsFixedBlockSize() ? 0x1 : 0x0,
transferSize,
0x00);
}
else
{
cmdStatus = WRITE_6(
task,
dataBuffer,
blksize,
IsFixedBlockSize() ? 0x1 : 0x0,
transferSize,
0x00);
flags |= ST_WRITTEN_TOGGLE;
}
if (cmdStatus == true)
taskStatus = DoSCSICommand(task, SCSI_MOTION_TIMEOUT);
*realizedBytes = GetRealizedDataTransferCount(task);
if (taskStatus == kSCSITaskStatus_GOOD)
status = kIOReturnSuccess;
ReleaseSCSITask(task);
ErrorExit:
return status;
}
IOReturn
IOSCSITape::ReadPosition(SCSI_ReadPositionShortForm *readPos, bool vendor)
{
SCSITaskIdentifier task = NULL;
IOReturn status = kIOReturnError;
SCSITaskStatus taskStatus = kSCSITaskStatus_DeviceNotResponding;
IOMemoryDescriptor * dataBuffer = NULL;
UInt8 readPosData[20] = { 0 };
dataBuffer = IOMemoryDescriptor::withAddress(&readPosData,
sizeof(readPosData),
kIODirectionIn);
require((dataBuffer != 0), ErrorExit);
task = GetSCSITask();
require((task != 0), ErrorExit);
if (READ_POSITION(task,
dataBuffer,
(vendor ? kSCSIReadPositionServiceAction_ShortFormVendorSpecific : kSCSIReadPositionServiceAction_ShortFormBlockID),
0x0,
0x00) == true)
{
taskStatus = DoSCSICommand(task, SCSI_NOMOTION_TIMEOUT);
}
if (taskStatus == kSCSITaskStatus_GOOD)
{
readPos->flags = readPosData[0];
readPos->partitionNumber = readPosData[1];
readPos->firstLogicalObjectLocation =
(readPosData[4] << 24) |
(readPosData[5] << 16) |
(readPosData[6] << 8) |
readPosData[7];
readPos->lastLogicalObjectLocation =
(readPosData[8] << 24) |
(readPosData[9] << 16) |
(readPosData[10] << 8) |
readPosData[11];
readPos->logicalObjectsInObjectBuffer =
(readPosData[13] << 16) |
(readPosData[14] << 8) |
readPosData[15];
readPos->bytesInObjectBuffer =
(readPosData[16] << 24) |
(readPosData[17] << 16) |
(readPosData[18] << 8) |
readPosData[19];
status = kIOReturnSuccess;
}
ReleaseSCSITask(task);
dataBuffer->release();
ErrorExit:
return status;
}