RASCSI/src/raspberrypi/devices/sasihd.cpp
Uwe Seimet 0e8d89e827
Code cleanup, in particular related to MODE SENSE (#699)
* Replace member functions

* Fixed TODO

* Added TODOs

* Added TODOs

* Removed duplicate code

* Fixed return value

* CD-ROM mode pages are provided by the CD-ROM implementation

* MO mode pages are provided by the MO implementation

* Comment update

* Removed duplicate code

* Removed more duplicate code

* Optimization

* Updated mode page size handling

* Addec TODO

* Started more flexible mode page handling

* Map mode pages

* Page 0 must be last

* Error handling update

* Updated size handling

* Updated map handling

* Use map references

* Move superclass call

* Added comment

* Host services also support mode page 0x3f (all pages)

* Updated handling of page 0

* Removed duplicate code

* Updated buffer size handling

* Code cleanup

* Removed duplicate code

* Use calloc()

* Removed duplicate code

* Comment update

* Fixed buffer offset

* Fixed TODO

* Added buffer size check

* Comment udpate

* Logging update

* Updated logging

* Avoid potential memory leak

* Updated handling of page 0

* Added TODO

* Comment update

* Fixed error message

* Use vector instead of byte array

* Optimization

* More optimizations

* Removed duplicate code

* Do not try to add more pages when buffer is full

* Updated error message

* Comment update, fixed host services message length handling

* Code cleanup, optimizations

* Updated payload handling for page 0

* Fixed TODO

* Updated handling of PS field

* Fixed offsets

* Updated handling for page 0

* Code cleanup

* More cleanup

* Updated block descriptor handling

* Result of REPORT LUNS must not depend on whether a device is ready or not

* Printer uses a dynamically allocated buffer

* Use realloc

* Updated memory handling

* Added assertion

* Comment update

* Fixed initialization

* Reset byte transfer flag

* Updated usage of realloc

* Reverted some changes

* Re-added buffer size check

* Renaming

* Inquiry for hard disk must also work when drive is not ready

* Primary device checks EVPD

* Added page code check to Inquiry

* Explicitly set response level format

* Added comment

* Removed useless cast

* Fixed inconsistencies in setting the additional length

* Logging uodate

* Updated logging

* Made methods const

* Moved code

* Added TODO

* Added vendor page

* Reduced visibility

* Code cleanup

* Mark override

* Removed duplicate cast

* Synchronized host services mode page handling with other code

* Added TODO

* Signature update

* Moved code

* Removed duplicate code

* Fixed TODO

* Removed duplicate code

* Added buffer size check

* Improved buffer size check

* Code cleanup

* Removed useless assertions

* Cleanup

* Renaming

* Added overrides

* Removed unnecessary casts

* Cleanup

* Added TODO

* Removed obsolete memset

* Removed duplicate code

* Logging update

* Logging update

* Assertion update

* Removed useless comments

* Code cleanup

* Removed obsolete casts

* User super typedef

* Updated log messages

* Fixed #712

* Updated error handling

* Removed useless assertions

* Reduced casts to Disk*

* Updated sector size list argument

* Removed obsolete casts

* Removed comment
2022-02-27 15:58:01 -06:00

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//---------------------------------------------------------------------------
//
// SCSI Target Emulator RaSCSI (*^..^*)
// for Raspberry Pi
//
// Copyright (C) 2001-2006 (ytanaka@ipc-tokai.or.jp)
// Copyright (C) 2014-2020 GIMONS
// Copyright (C) akuker
//
// Licensed under the BSD 3-Clause License.
// See LICENSE file in the project root folder.
//
// [ SASI hard disk ]
//
//---------------------------------------------------------------------------
#include "sasihd.h"
#include "fileio.h"
#include "exceptions.h"
#include "../config.h"
SASIHD::SASIHD(const set<uint32_t>& sector_sizes) : Disk("SAHD")
{
SetSectorSizes(sector_sizes);
}
void SASIHD::Reset()
{
// Unlock, clear attention
SetLocked(false);
SetAttn(false);
// Reset, clear the code
SetReset(false);
SetStatusCode(STATUS_NOERROR);
}
void SASIHD::Open(const Filepath& path)
{
assert(!IsReady());
// Open as read-only
Fileio fio;
if (!fio.Open(path, Fileio::ReadOnly)) {
throw file_not_found_exception("Can't open SASI hard disk file");
}
// Get file size
off_t size = fio.GetFileSize();
fio.Close();
// Sector size (default 256 bytes) and number of blocks
SetSectorSizeInBytes(GetConfiguredSectorSize() ? GetConfiguredSectorSize() : 256, true);
SetBlockCount((DWORD)(size >> GetSectorSizeShiftCount()));
#if defined(REMOVE_FIXED_SASIHD_SIZE)
// Effective size must be a multiple of the sector size
size = (size / GetSectorSizeInBytes()) * GetSectorSizeInBytes();
#else
// 10MB, 20MB, 40MBのみ
switch (size) {
// 10MB (10441728 BS=256 C=40788)
case 0x9f5400:
break;
// 20MB (20748288 BS=256 C=81048)
case 0x13c9800:
break;
// 40MB (41496576 BS=256 C=162096)
case 0x2793000:
break;
// Other (Not supported )
default:
throw io_exception("Unsupported file size");
}
#endif // REMOVE_FIXED_SASIHD_SIZE
Disk::Open(path);
FileSupport::SetPath(path);
}
int SASIHD::Inquiry(const DWORD* /*cdb*/, BYTE* /*buf*/)
{
SetStatusCode(STATUS_INVALIDCMD);
return 0;
}
int SASIHD::RequestSense(const DWORD *cdb, BYTE *buf)
{
// Size decision
int size = (int)cdb[4];
assert(size >= 0 && size < 0x100);
// Transfer 4 bytes when size 0 (Shugart Associates System Interface specification)
if (size == 0) {
size = 4;
}
// SASI fixed to non-extended format
memset(buf, 0, size);
buf[0] = (BYTE)(GetStatusCode() >> 16);
buf[1] = (BYTE)(GetLun() << 5);
return size;
}