mirror of
https://github.com/akuker/RASCSI.git
synced 2024-12-23 06:30:04 +00:00
144 lines
3.8 KiB
C++
144 lines
3.8 KiB
C++
//---------------------------------------------------------------------------
|
|
//
|
|
// SCSI Target Emulator RaSCSI Reloaded
|
|
// for Raspberry Pi
|
|
//
|
|
// Copyright (C) 2022 Uwe Seimet
|
|
//
|
|
// Host Services with realtime clock and shutdown support
|
|
//
|
|
//---------------------------------------------------------------------------
|
|
|
|
//
|
|
// Features of the host services device:
|
|
//
|
|
// 1. Vendor-specific mode page 0x20 returns the current date and time, see mode_page_datetime
|
|
//
|
|
// 2. START/STOP UNIT shuts down RaSCSI or shuts down/reboots the Raspberry Pi
|
|
// a) !start && !load (STOP): Shut down RaSCSI
|
|
// b) !start && load (EJECT): Shut down the Raspberry Pi
|
|
// c) start && load (LOAD): Reboot the Raspberry Pi
|
|
//
|
|
|
|
#include "shared/rascsi_exceptions.h"
|
|
#include "controllers/scsi_controller.h"
|
|
#include "scsi_command_util.h"
|
|
#include "host_services.h"
|
|
#include <algorithm>
|
|
|
|
using namespace scsi_defs;
|
|
using namespace scsi_command_util;
|
|
|
|
bool HostServices::Init(const unordered_map<string, string>& params)
|
|
{
|
|
ModePageDevice::Init(params);
|
|
|
|
AddCommand(scsi_command::eCmdTestUnitReady, [this] { TestUnitReady(); });
|
|
AddCommand(scsi_command::eCmdStartStop, [this] { StartStopUnit(); });
|
|
|
|
SetReady(true);
|
|
|
|
return true;
|
|
}
|
|
|
|
void HostServices::TestUnitReady()
|
|
{
|
|
// Always successful
|
|
EnterStatusPhase();
|
|
}
|
|
|
|
vector<uint8_t> HostServices::InquiryInternal() const
|
|
{
|
|
return HandleInquiry(device_type::PROCESSOR, scsi_level::SPC_3, false);
|
|
}
|
|
|
|
void HostServices::StartStopUnit() const
|
|
{
|
|
const bool start = GetController()->GetCmd(4) & 0x01;
|
|
const bool load = GetController()->GetCmd(4) & 0x02;
|
|
|
|
if (!start) {
|
|
if (load) {
|
|
GetController()->ScheduleShutdown(AbstractController::rascsi_shutdown_mode::STOP_PI);
|
|
}
|
|
else {
|
|
GetController()->ScheduleShutdown(AbstractController::rascsi_shutdown_mode::STOP_RASCSI);
|
|
}
|
|
}
|
|
else if (load) {
|
|
GetController()->ScheduleShutdown(AbstractController::rascsi_shutdown_mode::RESTART_PI);
|
|
}
|
|
else {
|
|
throw scsi_exception(sense_key::ILLEGAL_REQUEST, asc::INVALID_FIELD_IN_CDB);
|
|
}
|
|
|
|
EnterStatusPhase();
|
|
}
|
|
|
|
int HostServices::ModeSense6(const vector<int>& cdb, vector<uint8_t>& buf) const
|
|
{
|
|
// Block descriptors cannot be returned
|
|
if (!(cdb[1] & 0x08)) {
|
|
throw scsi_exception(sense_key::ILLEGAL_REQUEST, asc::INVALID_FIELD_IN_CDB);
|
|
}
|
|
|
|
const auto length = static_cast<int>(min(buf.size(), static_cast<size_t>(cdb[4])));
|
|
fill_n(buf.begin(), length, 0);
|
|
|
|
// 4 bytes basic information
|
|
const int size = AddModePages(cdb, buf, 4, length, 255);
|
|
|
|
buf[0] = (uint8_t)size;
|
|
|
|
return size;
|
|
}
|
|
|
|
int HostServices::ModeSense10(const vector<int>& cdb, vector<uint8_t>& buf) const
|
|
{
|
|
// Block descriptors cannot be returned
|
|
if (!(cdb[1] & 0x08)) {
|
|
throw scsi_exception(sense_key::ILLEGAL_REQUEST, asc::INVALID_FIELD_IN_CDB);
|
|
}
|
|
|
|
const auto length = static_cast<int>(min(buf.size(), static_cast<size_t>(GetInt16(cdb, 7))));
|
|
fill_n(buf.begin(), length, 0);
|
|
|
|
// 8 bytes basic information
|
|
const int size = AddModePages(cdb, buf, 8, length, 65535);
|
|
|
|
SetInt16(buf, 0, size);
|
|
|
|
return size;
|
|
}
|
|
|
|
void HostServices::SetUpModePages(map<int, vector<byte>>& pages, int page, bool changeable) const
|
|
{
|
|
if (page == 0x20 || page == 0x3f) {
|
|
AddRealtimeClockPage(pages, changeable);
|
|
}
|
|
}
|
|
|
|
void HostServices::AddRealtimeClockPage(map<int, vector<byte>>& pages, bool changeable) const
|
|
{
|
|
pages[32] = vector<byte>(10);
|
|
|
|
if (!changeable) {
|
|
time_t t = time(nullptr);
|
|
tm localtime;
|
|
localtime_r(&t, &localtime);
|
|
|
|
mode_page_datetime datetime;
|
|
datetime.major_version = 0x01;
|
|
datetime.minor_version = 0x00;
|
|
datetime.year = (uint8_t)localtime.tm_year;
|
|
datetime.month = (uint8_t)localtime.tm_mon;
|
|
datetime.day = (uint8_t)localtime.tm_mday;
|
|
datetime.hour = (uint8_t)localtime.tm_hour;
|
|
datetime.minute = (uint8_t)localtime.tm_min;
|
|
// Ignore leap second for simplicity
|
|
datetime.second = (uint8_t)(localtime.tm_sec < 60 ? localtime.tm_sec : 59);
|
|
|
|
memcpy(&pages[32][2], &datetime, sizeof(datetime));
|
|
}
|
|
}
|