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/*
* Copyright (C) 2018-2020 Intel Corporation
*
* SPDX-License-Identifier: MIT
*
*/
#include "shared/source/os_interface/linux/os_context_linux.h"
#include "shared/source/os_interface/linux/drm_neo.h"
#include "shared/source/os_interface/linux/os_interface.h"
#include "shared/source/os_interface/os_context.h"
namespace NEO {
OsContext *OsContext::create(OSInterface *osInterface, uint32_t contextId, DeviceBitfield deviceBitfield,
aub_stream::EngineType engineType, PreemptionMode preemptionMode,
bool lowPriority, bool internalEngine, bool rootDevice) {
if (osInterface) {
return new OsContextLinux(*osInterface->get()->getDrm(), contextId, deviceBitfield, engineType, preemptionMode,
lowPriority, internalEngine, rootDevice);
}
return new OsContext(contextId, deviceBitfield, engineType, preemptionMode,
lowPriority, internalEngine, rootDevice);
}
OsContextLinux::OsContextLinux(Drm &drm, uint32_t contextId, DeviceBitfield deviceBitfield,
aub_stream::EngineType engineType, PreemptionMode preemptionMode,
bool lowPriority, bool internalEngine, bool rootDevice)
: OsContext(contextId, deviceBitfield, engineType, preemptionMode, lowPriority, internalEngine, rootDevice),
drm(drm) {
for (auto deviceIndex = 0u; deviceIndex < deviceBitfield.size(); deviceIndex++) {
if (deviceBitfield.test(deviceIndex)) {
auto drmVmId = drm.getVirtualMemoryAddressSpace(deviceIndex);
auto drmContextId = drm.createDrmContext(drmVmId);
if (drm.areNonPersistentContextsSupported()) {
drm.setNonPersistentContext(drmContextId);
}
if (drm.isPreemptionSupported() && lowPriority) {
drm.setLowPriorityContextParam(drmContextId);
}
this->engineFlag = drm.bindDrmContext(drmContextId, deviceIndex, engineType);
this->drmContextIds.push_back(drmContextId);
if (drm.isPerContextVMRequired()) {
auto ret = drm.queryVmId(drmContextId, drmVmId);
DEBUG_BREAK_IF(drmVmId == 0);
DEBUG_BREAK_IF(ret != 0);
UNUSED_VARIABLE(ret);
this->drmVmIds.push_back(drmVmId);
}
}
}
}
Drm &OsContextLinux::getDrm() const {
return this->drm;
}
OsContextLinux::~OsContextLinux() {
for (auto drmContextId : drmContextIds) {
drm.destroyDrmContext(drmContextId);
}
}
} // namespace NEO
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