1 // Copyright (C) 2023 The Android Open Source Project 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #include "host/magma/Connection.h" 16 17 #include <i915_drm.h> 18 #include <sys/mman.h> 19 20 #include <cerrno> 21 #include <cinttypes> 22 23 #include "host-common/logging.h" 24 #include "host/magma/DrmDevice.h" 25 26 namespace gfxstream { 27 namespace magma { 28 Connection(DrmDevice & device)29Connection::Connection(DrmDevice& device) : mDevice(device) {} 30 getDevice()31DrmDevice& Connection::getDevice() { 32 return mDevice; 33 } 34 createContext()35std::optional<uint32_t> Connection::createContext() { 36 auto context = DrmContext::create(*this); 37 if (!context) { 38 ERR("Failed to create context"); 39 return std::nullopt; 40 } 41 42 auto id = context->getId(); 43 auto [_, emplaced] = mContexts.emplace(id, std::move(*context)); 44 if (!emplaced) { 45 ERR("GEM produced duplicate context ID %" PRIu32, id); 46 return std::nullopt; 47 } 48 49 return id; 50 } 51 getContext(uint32_t id)52DrmContext* Connection::getContext(uint32_t id) { 53 auto it = mContexts.find(id); 54 if (it == mContexts.end()) { 55 return nullptr; 56 } 57 return &it->second; 58 } 59 60 } // namespace magma 61 } // namespace gfxstream 62