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/*
* Copyright (C) 2022-2025 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#pragma once
#include "shared/source/helpers/basic_math.h"
#include "shared/source/os_interface/linux/drm_debug.h"
#include "shared/source/os_interface/linux/i915_prelim.h"
#include "shared/source/os_interface/linux/sys_calls.h"
#include "level_zero/core/source/device/device.h"
#include "level_zero/tools/source/debug/debug_session.h"
#include "level_zero/tools/source/debug/debug_session_imp.h"
#include "level_zero/tools/source/debug/linux/debug_session.h"
#include <atomic>
#include <mutex>
namespace NEO {
class Thread;
struct EngineClassInstance;
} // namespace NEO
namespace L0 {
struct TileDebugSessionLinuxi915;
struct DebugSession;
struct DebugSessionImp;
struct DebugSessionLinuxi915 : DebugSessionLinux {
friend struct TileDebugSessionLinuxi915;
~DebugSessionLinuxi915() override;
DebugSessionLinuxi915(const zet_debug_config_t &config, Device *device, int debugFd, void *params);
static DebugSession *createLinuxSession(const zet_debug_config_t &config, Device *device, ze_result_t &result, bool isRootAttach);
struct IoctlHandleri915 : DebugSessionLinux::IoctlHandler {
int ioctl(int fd, unsigned long request, void *arg) override {
int ret = 0;
int error = 0;
bool shouldRetryIoctl = false;
do {
shouldRetryIoctl = false;
ret = NEO::SysCalls::ioctl(fd, request, arg);
error = errno;
if (ret == -1) {
shouldRetryIoctl = (error == EINTR || error == EAGAIN || error == EBUSY);
if (request == PRELIM_I915_DEBUG_IOCTL_EU_CONTROL) {
shouldRetryIoctl = (error == EINTR || error == EAGAIN);
}
}
} while (shouldRetryIoctl);
return ret;
}
};
using ContextHandle = uint64_t;
struct ContextParams {
ContextHandle handle = 0;
uint64_t vm = UINT64_MAX;
std::vector<i915_engine_class_instance> engines;
};
struct UuidData {
uint64_t handle = 0;
uint64_t classHandle = 0;
NEO::DrmResourceClass classIndex = NEO::DrmResourceClass::maxSize;
std::unique_ptr<char[]> data;
size_t dataSize = 0;
uint64_t ptr = 0;
};
struct ClientConnectioni915 : public ClientConnection {
prelim_drm_i915_debug_event_client client = {};
size_t getElfSize(uint64_t elfHandle) override { return uuidMap[elfHandle].dataSize; };
char *getElfData(uint64_t elfHandle) override { return uuidMap[elfHandle].data.get(); };
std::unordered_map<ContextHandle, ContextParams> contextsCreated;
std::unordered_map<uint64_t, std::pair<std::string, uint32_t>> classHandleToIndex;
std::unordered_map<uint64_t, UuidData> uuidMap;
std::unordered_map<uint64_t, ContextHandle> lrcToContextHandle;
std::unordered_map<uint64_t, Module> uuidToModule;
};
std::shared_ptr<ClientConnection> getClientConnection(uint64_t clientHandle) override {
return clientHandleToConnection[clientHandle];
};
protected:
MOCKABLE_VIRTUAL void handleEvent(prelim_drm_i915_debug_event *event);
std::unordered_map<uint64_t, std::shared_ptr<ClientConnectioni915>> clientHandleToConnection;
ze_result_t readEventImp(prelim_drm_i915_debug_event *drmDebugEvent);
DebugSessionImp *createTileSession(const zet_debug_config_t &config, Device *device, DebugSessionImp *rootDebugSession) override;
static void *asyncThreadFunction(void *arg);
void startAsyncThread() override;
bool handleInternalEvent() override;
void updateContextAndLrcHandlesForThreadsWithAttention(EuThread::ThreadId threadId, const AttentionEventFields &attention) override {}
uint64_t getVmHandleFromClientAndlrcHandle(uint64_t clientHandle, uint64_t lrcHandle) override;
bool handleVmBindEvent(prelim_drm_i915_debug_event_vm_bind *vmBind);
void handleContextParamEvent(prelim_drm_i915_debug_event_context_param *contextParam);
void handleAttentionEvent(prelim_drm_i915_debug_event_eu_attention *attention);
void handleEnginesEvent(prelim_drm_i915_debug_event_engines *engines);
int eventAckIoctl(EventToAck &event) override;
Module &getModule(uint64_t moduleHandle) override {
auto connection = clientHandleToConnection[clientHandle].get();
DEBUG_BREAK_IF(connection->uuidToModule.find(moduleHandle) == connection->uuidToModule.end());
return connection->uuidToModule[moduleHandle];
}
MOCKABLE_VIRTUAL void processPendingVmBindEvents();
std::unique_lock<std::mutex> getThreadStateMutexForTileSession(uint32_t tileIndex) override;
void checkTriggerEventsForAttentionForTileSession(uint32_t tileIndex) override;
void addThreadToNewlyStoppedFromRaisedAttentionForTileSession(EuThread::ThreadId threadId,
uint64_t memoryHandle,
const void *stateSaveArea,
uint32_t tileIndex) override;
void pushApiEventForTileSession(uint32_t tileIndex, zet_debug_event_t &debugEvent) override;
void setPageFaultForTileSession(uint32_t tileIndex, EuThread::ThreadId threadId, bool hasPageFault) override;
void attachTile() override {
UNRECOVERABLE_IF(true);
}
void detachTile() override {
UNRECOVERABLE_IF(true);
}
void extractUuidData(uint64_t client, const UuidData &uuidData);
uint64_t extractVaFromUuidString(std::string &uuid);
int openVmFd(uint64_t vmHandle, bool readOnly) override;
int threadControl(const std::vector<EuThread::ThreadId> &threads, uint32_t tile, ThreadControlCmd threadCmd, std::unique_ptr<uint8_t[]> &bitmask, size_t &bitmaskSize) override;
void printContextVms();
std::vector<std::unique_ptr<uint64_t[]>> pendingVmBindEvents;
uint32_t i915DebuggerVersion = 0;
virtual int ioctl(unsigned long request, void *arg);
std::atomic<bool> detached{false};
std::unordered_map<uint64_t, uint32_t> uuidL0CommandQueueHandleToDevice;
uint64_t euControlInterruptSeqno[NEO::EngineLimits::maxHandleCount];
void readInternalEventsAsync() override;
bool blockOnFenceMode = false; // false - blocking VM_BIND on CPU - autoack events until last blocking event
// true - blocking on fence - do not auto-ack events
};
struct TileDebugSessionLinuxi915 : DebugSessionLinuxi915 {
TileDebugSessionLinuxi915(zet_debug_config_t config, Device *device, DebugSessionImp *rootDebugSession) : DebugSessionLinuxi915(config, device, 0, nullptr),
rootDebugSession(reinterpret_cast<DebugSessionLinuxi915 *>(rootDebugSession)) {
tileIndex = Math::log2(static_cast<uint32_t>(connectedDevice->getNEODevice()->getDeviceBitfield().to_ulong()));
}
~TileDebugSessionLinuxi915() override = default;
bool closeConnection() override { return true; }
ze_result_t initialize() override {
createEuThreads();
return ZE_RESULT_SUCCESS;
}
bool insertModule(zet_debug_event_info_module_t module);
bool removeModule(zet_debug_event_info_module_t module);
bool processEntry();
bool processExit();
void attachTile() override;
void detachTile() override;
bool isAttached = false;
protected:
void startAsyncThread() override { UNRECOVERABLE_IF(true); };
void cleanRootSessionAfterDetach(uint32_t deviceIndex) override { UNRECOVERABLE_IF(true); };
bool readModuleDebugArea() override { return true; };
uint64_t getContextStateSaveAreaGpuVa(uint64_t memoryHandle) override {
return rootDebugSession->getContextStateSaveAreaGpuVa(memoryHandle);
};
size_t getContextStateSaveAreaSize(uint64_t memoryHandle) override {
return rootDebugSession->getContextStateSaveAreaSize(memoryHandle);
};
void readStateSaveAreaHeader() override;
uint64_t getSbaBufferGpuVa(uint64_t memoryHandle) override {
return rootDebugSession->getSbaBufferGpuVa(memoryHandle);
}
int ioctl(unsigned long request, void *arg) override {
return rootDebugSession->ioctl(request, arg);
}
std::vector<uint64_t> getAllMemoryHandles() override {
return rootDebugSession->getAllMemoryHandles();
}
bool tryReadElf(const zet_debug_memory_space_desc_t *desc, size_t size, void *buffer, ze_result_t &status) override {
return rootDebugSession->tryReadElf(desc, size, buffer, status);
}
bool tryAccessIsa(NEO::DeviceBitfield deviceBitfield, const zet_debug_memory_space_desc_t *desc, size_t size, void *buffer, bool write, ze_result_t &status) override {
return rootDebugSession->tryAccessIsa(deviceBitfield, desc, size, buffer, write, status);
}
bool ackIsaEvents(uint32_t deviceIndex, uint64_t isaVa) override {
return rootDebugSession->ackIsaEvents(this->tileIndex, isaVa);
}
bool ackModuleEvents(uint32_t deviceIndex, uint64_t moduleUuidHandle) override {
return rootDebugSession->ackModuleEvents(this->tileIndex, moduleUuidHandle);
}
ze_result_t readGpuMemory(uint64_t vmHandle, char *output, size_t size, uint64_t gpuVa) override {
return rootDebugSession->readGpuMemory(vmHandle, output, size, gpuVa);
}
ze_result_t writeGpuMemory(uint64_t vmHandle, const char *input, size_t size, uint64_t gpuVa) override {
return rootDebugSession->writeGpuMemory(vmHandle, input, size, gpuVa);
}
ze_result_t resumeImp(const std::vector<EuThread::ThreadId> &threads, uint32_t deviceIndex) override {
return rootDebugSession->resumeImp(threads, this->tileIndex);
}
ze_result_t interruptImp(uint32_t deviceIndex) override {
return rootDebugSession->interruptImp(this->tileIndex);
}
DebugSessionLinuxi915 *rootDebugSession = nullptr;
uint32_t tileIndex = std::numeric_limits<uint32_t>::max();
bool processEntryState = false;
std::unordered_map<uint64_t, zet_debug_event_info_module_t> modules;
};
} // namespace L0
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