RASCSI/cpp/devices/scsimo.cpp
Klaus Kämpf b7f65d33e2
Honor sector size change via ModeSelect6 in scsicd (#1406)
* Make ModeSelect() non-const

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

* 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>

* Test sector size setting via ModeSelect in SCSICD

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

* Re-calculate total blocks when sector size changes

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

* Reset CD data tracks after sector size change

The track calculation is based on sector size and must be reset after
change of sector size.

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

* resize cache after change of sector size

The disk cache is based on sector size and must be resized when the
sector size changes.

Disk::ResizeCache needs a `raw` parameter, make this value accessible
from the current cache.

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

* Make GetRawMode const

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>

---------

Signed-off-by: Klaus Kämpf <kkaempf@gmail.com>
2024-01-10 06:36:24 +09:00

207 lines
4.8 KiB
C++
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

//---------------------------------------------------------------------------
//
// SCSI Target Emulator PiSCSI
// for Raspberry Pi
//
// Copyright (C) 2001-2006 (ytanaka@ipc-tokai.or.jp)
// Copyright (C) 2014-2020 GIMONS
// Copyright (C) 2022-2023 Uwe Seimet
// Copyright (C) akuker
//
// Licensed under the BSD 3-Clause License.
// See LICENSE file in the project root folder.
//
//---------------------------------------------------------------------------
#include "shared/piscsi_exceptions.h"
#include "scsi_command_util.h"
#include "scsimo.h"
using namespace scsi_command_util;
SCSIMO::SCSIMO(int lun) : Disk(SCMO, lun, { 512, 1024, 2048, 4096 })
{
// 128 MB, 512 bytes per sector, 248826 sectors
geometries[512 * 248826] = { 512, 248826 };
// 230 MB, 512 bytes per block, 446325 sectors
geometries[512 * 446325] = { 512, 446325 };
// 540 MB, 512 bytes per sector, 1041500 sectors
geometries[512 * 1041500] = { 512, 1041500 };
// 640 MB, 20248 bytes per sector, 310352 sectors
geometries[2048 * 310352] = { 2048, 310352 };
SetProtectable(true);
SetRemovable(true);
SetLockable(true);
SupportsSaveParameters(true);
}
void SCSIMO::Open()
{
assert(!IsReady());
// For some capacities there are hard-coded, well-defined sector sizes and block counts
if (const off_t size = GetFileSize(); !SetGeometryForCapacity(size)) {
// Sector size (default 512 bytes) and number of blocks
SetSectorSizeInBytes(GetConfiguredSectorSize() ? GetConfiguredSectorSize() : 512);
SetBlockCount(size >> GetSectorSizeShiftCount());
}
Disk::ValidateFile();
SetUpCache(0);
// Attention if ready
if (IsReady()) {
SetAttn(true);
}
}
vector<uint8_t> SCSIMO::InquiryInternal() const
{
return HandleInquiry(device_type::optical_memory, scsi_level::scsi_2, true);
}
void SCSIMO::SetUpModePages(map<int, vector<byte>>& pages, int page, bool changeable) const
{
Disk::SetUpModePages(pages, page, changeable);
// Page code 6
if (page == 0x06 || page == 0x3f) {
AddOptionPage(pages, changeable);
}
}
void SCSIMO::AddFormatPage(map<int, vector<byte>>& pages, bool changeable) const
{
Disk::AddFormatPage(pages, changeable);
EnrichFormatPage(pages, changeable, 1 << GetSectorSizeShiftCount());
}
void SCSIMO::AddOptionPage(map<int, vector<byte>>& pages, bool) const
{
vector<byte> buf(4);
pages[6] = buf;
// Do not report update blocks
}
void SCSIMO::ModeSelect(scsi_command cmd, cdb_t cdb, span<const uint8_t> buf, int length)
{
if (const string result = scsi_command_util::ModeSelect(cmd, cdb, buf, length, 1 << GetSectorSizeShiftCount());
!result.empty()) {
LogWarn(result);
}
}
//
// Mode page code 20h - Vendor Unique Format Page
// Format mode XXh type 0
// Information: http://h20628.www2.hp.com/km-ext/kmcsdirect/emr_na-lpg28560-1.pdf
// Offset description
// 02h format mode
// 03h type of format (0)
// 04~07h size of user band (total sectors?)
// 08~09h size of spare band (spare sectors?)
// 0A~0Bh number of bands
//
// Actual value of each 3.5 inches optical medium (grabbed by Fujitsu M2513EL)
//
// 128M 230M 540M 640M
// ---------------------------------------------------
// Size of user band 3CBFAh 6CF75h FE45Ch 4BC50h
// Size of spare band 0400h 0401h 08CAh 08C4h
// Number of bands 0001h 000Ah 0012h 000Bh
//
// Further information: http://r2089.blog36.fc2.com/blog-entry-177.html
//
void SCSIMO::AddVendorPage(map<int, vector<byte>>& pages, int page, bool changeable) const
{
if (page != 0x20 && page != 0x3f) {
return;
}
vector<byte> buf(12);
// No changeable area
if (changeable) {
pages[32] = buf;
return;
}
if (IsReady()) {
unsigned spare = 0;
unsigned bands = 0;
uint64_t blocks = GetBlockCount();
if (GetSectorSizeInBytes() == 512) {
switch (blocks) {
// 128MB
case 248826:
spare = 1024;
bands = 1;
break;
// 230MB
case 446325:
spare = 1025;
bands = 10;
break;
// 540MB
case 1041500:
spare = 2250;
bands = 18;
break;
default:
break;
}
}
if (GetSectorSizeInBytes() == 2048) {
switch (blocks) {
// 640MB
case 310352:
spare = 2244;
bands = 11;
break;
// 1.3GB (lpproj: not tested with real device)
case 605846:
spare = 4437;
bands = 18;
break;
default:
break;
}
}
buf[2] = (byte)0; // format mode
buf[3] = (byte)0; // type of format
SetInt32(buf, 4, static_cast<uint32_t>(blocks));
SetInt16(buf, 8, spare);
SetInt16(buf, 10, bands);
}
pages[32] = buf;
return;
}
bool SCSIMO::SetGeometryForCapacity(uint64_t capacity) {
if (const auto& geometry = geometries.find(capacity); geometry != geometries.end()) {
SetSectorSizeInBytes(geometry->second.first);
SetBlockCount(geometry->second.second);
return true;
}
return false;
}