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Implement ModeSelect for scsicd 

and honor sector size setting.

DEC's VMS can't handle 2k sector sizes and uses ModeSelect6 to set the
sector size to 512 bytes.

Fixes #1397

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>
This commit is contained in:
Klaus Kämpf 2023-12-26 16:54:24 +01:00
parent 1fc2c09130
commit e0cb5d4d0d
2 changed files with 20 additions and 0 deletions
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19
cpp/devices/scsicd.cpp
View File

@ -165,6 +165,25 @@ vector<uint8_t> SCSICD::InquiryInternal() const
return HandleInquiry(device_type::cd_rom, scsi_level, true);
}
void SCSICD::ModeSelect(scsi_command cmd, cdb_t cdb, span<const uint8_t> buf, int length)
{
int sector_size = 1 << GetSectorSizeShiftCount();
int wanted_sector_size;
// skip Block Descriptor
int offset = 4;
// evaluate Mode Parameter Block Descriptor, sector size
wanted_sector_size = scsi_command_util::GetInt16(buf, offset + 6);
if (wanted_sector_size != sector_size) {
LogDebug("Changing sector size from " + to_string(sector_size) + " to " + to_string(wanted_sector_size));
SetSectorSizeInBytes(wanted_sector_size);
}
if (const string result = scsi_command_util::ModeSelect(cmd, cdb, buf, length, sector_size);
!result.empty()) {
LogWarn(result);
}
}
void SCSICD::SetUpModePages(map<int, vector<byte>>& pages, int page, bool changeable) const
{
Disk::SetUpModePages(pages, page, changeable);

1
cpp/devices/scsicd.h
View File

@ -34,6 +34,7 @@ public:
vector<uint8_t> InquiryInternal() const override;
int Read(span<uint8_t>, uint64_t) override;
void ModeSelect(scsi_defs::scsi_command, cdb_t, span<const uint8_t>, int) override;
protected: