92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
#include "icsneo/disk/neomemorydiskdriver.h"
|
|
#include "icsneo/communication/message/neoreadmemorysdmessage.h"
|
|
#include <cstring>
|
|
|
|
using namespace icsneo;
|
|
using namespace icsneo::Disk;
|
|
|
|
optional<uint64_t> NeoMemoryDiskDriver::readLogicalDiskAligned(Communication& com, device_eventhandler_t report,
|
|
uint64_t pos, uint8_t* into, uint64_t amount, std::chrono::milliseconds timeout) {
|
|
static std::shared_ptr<MessageFilter> NeoMemorySDRead = std::make_shared<MessageFilter>(Network::NetID::NeoMemorySDRead);
|
|
|
|
if(pos % SectorSize != 0)
|
|
return nullopt;
|
|
|
|
if(amount != SectorSize)
|
|
return nullopt;
|
|
|
|
if(cachePos != pos || std::chrono::steady_clock::now() > cachedAt + CacheTime) {
|
|
// The cache does not have this data, go get it
|
|
const uint64_t currentSector = pos / SectorSize;
|
|
auto msg = com.waitForMessageSync([¤tSector, &com] {
|
|
return com.sendCommand(Command::NeoReadMemory, {
|
|
MemoryTypeSD,
|
|
uint8_t(currentSector & 0xFF),
|
|
uint8_t((currentSector >> 8) & 0xFF),
|
|
uint8_t((currentSector >> 16) & 0xFF),
|
|
uint8_t((currentSector >> 24) & 0xFF),
|
|
uint8_t(SectorSize & 0xFF),
|
|
uint8_t((SectorSize >> 8) & 0xFF),
|
|
uint8_t((SectorSize >> 16) & 0xFF),
|
|
uint8_t((SectorSize >> 24) & 0xFF)
|
|
});
|
|
}, NeoMemorySDRead, timeout);
|
|
|
|
if(!msg)
|
|
return 0;
|
|
|
|
const auto sdmsg = std::dynamic_pointer_cast<NeoReadMemorySDMessage>(msg);
|
|
if(!sdmsg || sdmsg->data.size() != SectorSize) {
|
|
report(APIEvent::Type::PacketDecodingError, APIEvent::Severity::Error);
|
|
return nullopt;
|
|
}
|
|
|
|
memcpy(cache.data(), sdmsg->data.data(), SectorSize);
|
|
cachedAt = std::chrono::steady_clock::now();
|
|
cachePos = pos;
|
|
}
|
|
|
|
memcpy(into, cache.data(), SectorSize);
|
|
return SectorSize;
|
|
}
|
|
|
|
optional<uint64_t> NeoMemoryDiskDriver::writeLogicalDiskAligned(Communication& com, device_eventhandler_t report,
|
|
uint64_t pos, const uint8_t* atomicBuf, const uint8_t* from, uint64_t amount, std::chrono::milliseconds timeout) {
|
|
|
|
static std::shared_ptr<MessageFilter> NeoMemoryDone = std::make_shared<MessageFilter>(Network::NetID::NeoMemoryWriteDone);
|
|
|
|
if(pos % SectorSize != 0)
|
|
return nullopt;
|
|
|
|
if(amount != SectorSize)
|
|
return nullopt;
|
|
|
|
// Clear the cache if we're writing to the cached sector
|
|
if(pos == cachePos)
|
|
cachedAt = std::chrono::time_point<std::chrono::steady_clock>();
|
|
|
|
// Requesting an atomic operation, but neoMemory does not support it
|
|
// Continue on anyway but warn the caller
|
|
if(atomicBuf != nullptr)
|
|
report(APIEvent::Type::AtomicOperationCompletedNonatomically, NonatomicSeverity);
|
|
|
|
const uint64_t currentSector = pos / SectorSize;
|
|
auto msg = com.waitForMessageSync([¤tSector, &com, from, amount] {
|
|
std::vector<uint8_t> command = {
|
|
MemoryTypeSD,
|
|
uint8_t(currentSector & 0xFF),
|
|
uint8_t((currentSector >> 8) & 0xFF),
|
|
uint8_t((currentSector >> 16) & 0xFF),
|
|
uint8_t((currentSector >> 24) & 0xFF),
|
|
uint8_t(SectorSize & 0xFF),
|
|
uint8_t((SectorSize >> 8) & 0xFF),
|
|
};
|
|
command.insert(command.end(), from, from + amount);
|
|
return com.sendCommand(Command::NeoWriteMemory, command);
|
|
}, NeoMemoryDone, timeout);
|
|
|
|
if(!msg)
|
|
return nullopt;
|
|
|
|
return SectorSize;
|
|
} |