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Say hello to Streamer (tape) device support

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Implements the mandatory and a few optional commands for tandberd see
https://bitsavers.org/pdf/tandbergData/TDC4100/6047-1_TDC-4100_SCSI-2_Interface_Functional_Specification_Aug1991.pdf
for more info.

Fixed #480
This commit is contained in:
BogDan Vatra
2024-08-14 12:09:59 +03:00
committed by Daniel Markstedt
parent 65e2729190
commit a985fc83e4
33 changed files with 1235 additions and 107 deletions
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cpp/devices/disk.cpp
-38
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@@ -36,7 +36,6 @@ bool Disk::Init(const param_map& params)
AddCommand(scsi_command::eCmdWrite6, [this] { Write6(); });
AddCommand(scsi_command::eCmdSeek6, [this] { Seek6(); });
AddCommand(scsi_command::eCmdStartStop, [this] { StartStopUnit(); });
AddCommand(scsi_command::eCmdPreventAllowMediumRemoval, [this]{ PreventAllowMediumRemoval(); });
AddCommand(scsi_command::eCmdReadCapacity10, [this] { ReadCapacity10(); });
AddCommand(scsi_command::eCmdRead10, [this] { Read10(); });
AddCommand(scsi_command::eCmdWrite10, [this] { Write10(); });
@@ -232,18 +231,7 @@ void Disk::StartStopUnit()
EnterStatusPhase();
}
void Disk::PreventAllowMediumRemoval()
{
CheckReady();
const bool lock = GetController()->GetCmdByte(4) & 0x01;
LogTrace(lock ? "Locking medium" : "Unlocking medium");
SetLocked(lock);
EnterStatusPhase();
}
void Disk::SynchronizeCache()
{
@@ -682,32 +670,6 @@ tuple<bool, uint64_t, uint32_t> Disk::CheckAndGetStartAndCount(access_mode mode)
return tuple(true, start, count);
}
uint32_t Disk::CalculateShiftCount(uint32_t size_in_bytes)
{
const auto& it = shift_counts.find(size_in_bytes);
return it != shift_counts.end() ? it->second : 0;
}
uint32_t Disk::GetSectorSizeInBytes() const
{
return size_shift_count ? 1 << size_shift_count : 0;
}
void Disk::SetSectorSizeInBytes(uint32_t size_in_bytes)
{
if (!GetSupportedSectorSizes().contains(size_in_bytes)) {
throw io_exception("Invalid sector size of " + to_string(size_in_bytes) + " byte(s)");
}
size_shift_count = CalculateShiftCount(size_in_bytes);
assert(size_shift_count);
}
uint32_t Disk::GetConfiguredSectorSize() const
{
return configured_sector_size;
}
bool Disk::SetConfiguredSectorSize(uint32_t configured_size)
{
if (!supported_sector_sizes.contains(configured_size)) {