mirror of https://github.com/akuker/RASCSI.git
122 lines
2.9 KiB
C++
122 lines
2.9 KiB
C++
//---------------------------------------------------------------------------
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//
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// SCSI Target Emulator RaSCSI (*^..^*)
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// for Raspberry Pi
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//
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// Copyright (C) 2022 Uwe Seimet
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//
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// A basic device with mode page support, to be used for subclassing
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//
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//---------------------------------------------------------------------------
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#include "log.h"
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#include "controllers/scsidev_ctrl.h"
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#include "mode_page_device.h"
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using namespace std;
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using namespace scsi_defs;
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ModePageDevice::ModePageDevice(const string& id) : PrimaryDevice(id)
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{
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dispatcher.AddCommand(eCmdModeSense6, "ModeSense6", &ModePageDevice::ModeSense6);
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dispatcher.AddCommand(eCmdModeSense10, "ModeSense10", &ModePageDevice::ModeSense10);
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dispatcher.AddCommand(eCmdModeSelect6, "ModeSelect6", &ModePageDevice::ModeSelect6);
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dispatcher.AddCommand(eCmdModeSelect10, "ModeSelect10", &ModePageDevice::ModeSelect10);
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}
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bool ModePageDevice::Dispatch(SCSIDEV *controller)
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{
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// The superclass class handles the less specific commands
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return dispatcher.Dispatch(this, controller) ? true : super::Dispatch(controller);
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}
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void ModePageDevice::ModeSense6(SASIDEV *controller)
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{
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ctrl->length = ModeSense6(ctrl->cmd, ctrl->buffer);
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if (ctrl->length <= 0) {
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controller->Error();
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return;
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}
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controller->DataIn();
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}
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void ModePageDevice::ModeSense10(SASIDEV *controller)
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{
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ctrl->length = ModeSense10(ctrl->cmd, ctrl->buffer);
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if (ctrl->length <= 0) {
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controller->Error();
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return;
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}
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controller->DataIn();
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}
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bool ModePageDevice::ModeSelect(const DWORD* /*cdb*/, const BYTE *buf, int length)
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{
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ASSERT(buf);
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ASSERT(length >= 0);
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// cannot be set
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SetStatusCode(STATUS_INVALIDPRM);
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return false;
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}
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void ModePageDevice::ModeSelect6(SASIDEV *controller)
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{
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LOGTRACE("%s Unsupported mode page $%02X", __PRETTY_FUNCTION__, ctrl->buffer[0]);
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ctrl->length = ModeSelectCheck6(ctrl->cmd);
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if (ctrl->length <= 0) {
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controller->Error();
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return;
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}
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controller->DataOut();
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}
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void ModePageDevice::ModeSelect10(SASIDEV *controller)
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{
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LOGTRACE("%s Unsupported mode page $%02X", __PRETTY_FUNCTION__, ctrl->buffer[0]);
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ctrl->length = ModeSelectCheck10(ctrl->cmd);
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if (ctrl->length <= 0) {
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controller->Error();
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return;
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}
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controller->DataOut();
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}
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int ModePageDevice::ModeSelectCheck(const DWORD *cdb, int length)
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{
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// Error if save parameters are set for other types than of SCHD or SCRM
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// TODO This assumption is not correct, and this code should be located elsewhere
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if (!IsSCSIHD() && (cdb[1] & 0x01)) {
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SetStatusCode(STATUS_INVALIDCDB);
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return 0;
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}
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return length;
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}
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int ModePageDevice::ModeSelectCheck6(const DWORD *cdb)
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{
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// Receive the data specified by the parameter length
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return ModeSelectCheck(cdb, cdb[4]);
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}
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int ModePageDevice::ModeSelectCheck10(const DWORD *cdb)
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{
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// Receive the data specified by the parameter length
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int length = cdb[7];
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length <<= 8;
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length |= cdb[8];
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if (length > 0x800) {
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length = 0x800;
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}
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return ModeSelectCheck(cdb, length);
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}
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