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Add ModeSense page 0x25 (DEC unique page) 

VAXServer 3100 (CPU KA41-E) console firmware issues ModeSense(6)
page 0x25 when probing for disks. A disk won't be recognized if
this returns an error.

The DEC SCSI specification[1], section 8.5 documents this page.

[1] https://manx-docs.org/collections/antonio/dec/dec-scsi.pdf

Fixes #1410

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>
This commit is contained in:
Klaus Kämpf 2024-01-13 17:47:58 +01:00
parent 7cc8df271c
commit 91611b43ae
2 changed files with 25 additions and 0 deletions
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24
cpp/devices/scsihd.cpp
View File

@ -97,8 +97,32 @@ void SCSIHD::AddFormatPage(map<int, vector<byte>>& pages, bool changeable) const
EnrichFormatPage(pages, changeable, 1 << GetSectorSizeShiftCount());
}
// Page code 37 (25h) - DEC Unique Page
void SCSIHD::AddDECUniquePage(map<int, vector<byte>>& pages, bool changeable) const
{
vector<byte> buf(25);
// No changeable area
if (changeable) {
pages[0x25] = buf;
return;
}
buf[0] = static_cast<byte> (0x25 | 0x80); // page code, high bit set
buf[1] = static_cast<byte> (sizeof(buf) - 1);
buf[2] = static_cast<byte> (0x01); // drive does not auto-start
pages[0x25] = buf;
}
void SCSIHD::AddVendorPage(map<int, vector<byte>>& pages, int page, bool changeable) const
{
// Page code 0x25: DEC unique
if (page == 0x25 || page == 0x3f) {
AddDECUniquePage(pages, changeable);
}
// Page code 48
if (page == 0x30 || page == 0x3f) {
AddAppleVendorModePage(pages, changeable);

1
cpp/devices/scsihd.h
View File

@ -40,6 +40,7 @@ public:
void ModeSelect(scsi_defs::scsi_command, cdb_t, span<const uint8_t>, int) override;
void AddFormatPage(map<int, vector<byte>>&, bool) const override;
void AddDECUniquePage(map<int, vector<byte>>&, bool) const;
void AddVendorPage(map<int, vector<byte>>&, int, bool) const override;
private: