mirror of https://github.com/akuker/RASCSI.git
121 lines
3.1 KiB
C++
121 lines
3.1 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator RaSCSI Reloaded
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// for Raspberry Pi
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//
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// Copyright (C) 2001-2006 ＰＩ．(ytanaka@ipc-tokai.or.jp)
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// Copyright (C) 2014-2020 GIMONS
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// Copyright (C) akuker
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//
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// Licensed under the BSD 3-Clause License.
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// See LICENSE file in the project root folder.
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//
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// [ SCSI hard disk ]
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//
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//---------------------------------------------------------------------------
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#include "scsihd.h"
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#include "fileio.h"
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#include "rascsi_exceptions.h"
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#include "scsi_command_util.h"
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#include <sstream>
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using namespace scsi_command_util;
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SCSIHD::SCSIHD(int lun, const unordered_set<uint32_t>& sector_sizes, bool removable, scsi_defs::scsi_level level)
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: Disk(removable ? "SCRM" : "SCHD", lun)
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{
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scsi_level = level;
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SetSectorSizes(sector_sizes);
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}
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void SCSIHD::FinalizeSetup(const Filepath &path, off_t size, off_t image_offset)
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{
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// 2TB is the current maximum
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if (size > 2LL * 1024 * 1024 * 1024 * 1024) {
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throw io_exception("File size must not exceed 2 TiB");
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}
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// For non-removable media drives set the default product name based on the drive capacity
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if (!IsRemovable()) {
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uint64_t capacity = GetBlockCount() * GetSectorSizeInBytes();
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string unit;
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// 10 GiB and more
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if (capacity >= 1099511627776) {
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capacity /= 1099511627776;
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unit = "GiB";
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}
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// 1 MiB and more
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else if (capacity >= 1048576) {
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capacity /= 1048576;
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unit = "MiB";
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}
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else {
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capacity /= 1024;
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unit = "KiB";
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}
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stringstream product;
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product << DEFAULT_PRODUCT << " " << capacity << " " << unit;
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SetProduct(product.str(), false);
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}
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SetReadOnly(false);
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SetProtectable(true);
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SetProtected(false);
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Disk::Open(path);
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FileSupport::SetPath(path);
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SetUpCache(path, image_offset);
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}
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void SCSIHD::Open(const Filepath& path)
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{
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assert(!IsReady());
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// Open as read-only
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Fileio fio;
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if (!fio.Open(path, Fileio::OpenMode::ReadOnly)) {
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throw file_not_found_exception("Can't open SCSI hard disk file");
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}
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// Get file size
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off_t size = fio.GetFileSize();
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fio.Close();
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// Sector size (default 512 bytes) and number of blocks
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SetSectorSizeInBytes(GetConfiguredSectorSize() ? GetConfiguredSectorSize() : 512);
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SetBlockCount((DWORD)(size >> GetSectorSizeShiftCount()));
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// Effective size must be a multiple of the sector size
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size = (size / GetSectorSizeInBytes()) * GetSectorSizeInBytes();
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FinalizeSetup(path, size);
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}
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vector<byte> SCSIHD::InquiryInternal() const
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{
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return HandleInquiry(device_type::DIRECT_ACCESS, scsi_level, IsRemovable());
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}
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void SCSIHD::ModeSelect(const vector<int>& cdb, const vector<BYTE>& buf, int length) const
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{
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scsi_command_util::ModeSelect(cdb, buf, length, 1 << GetSectorSizeShiftCount());
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}
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void SCSIHD::AddFormatPage(map<int, vector<byte>>& pages, bool changeable) const
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{
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Disk::AddFormatPage(pages, changeable);
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EnrichFormatPage(pages, changeable, 1 << GetSectorSizeShiftCount());
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}
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void SCSIHD::AddVendorPage(map<int, vector<byte>>& pages, int page, bool changeable) const
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{
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// Page code 48
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if (page == 0x30 || page == 0x3f) {
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AddAppleVendorModePage(pages, changeable);
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}
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}
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