Merge "Allow native process to load updatable driver." into rvc-dev

5 files changed, 89 insertions, 8 deletions

diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 4809c1f0d8..3d0f8bbb11 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -40,6 +40,13 @@
 #include <string>
 #include <thread>
 
+// TODO(b/159240322): Extend this to x86 ABI.
+#if defined(__LP64__)
+#define UPDATABLE_DRIVER_ABI "arm64-v8a"
+#else
+#define UPDATABLE_DRIVER_ABI "armeabi-v7a"
+#endif // defined(__LP64__)
+
 // TODO(ianelliott@): Get the following from an ANGLE header:
 #define CURRENT_ANGLE_API_VERSION 2 // Current API verion we are targetting
 // Version-2 API:
@@ -584,7 +591,28 @@ android_namespace_t* GraphicsEnv::getDriverNamespace() {
     }
 
     if (mDriverPath.empty()) {
-        return nullptr;
+        // For an application process, driver path is empty means this application is not opted in
+        // to use updatable driver. Application process doesn't have the ability to set up
+        // environment variables and hence before `getenv` call will return.
+        // For a process that is not an application process, if it's run from an environment,
+        // for example shell, where environment variables can be set, then it can opt into using
+        // udpatable driver by setting UPDATABLE_GFX_DRIVER to 1. By setting to 1 the developer
+        // driver will be used currently.
+        // TODO(b/159240322) Support the production updatable driver.
+        const char* id = getenv("UPDATABLE_GFX_DRIVER");
+        if (id == nullptr || std::strcmp(id, "1")) {
+            return nullptr;
+        }
+        const sp<IGpuService> gpuService = getGpuService();
+        if (!gpuService) {
+            return nullptr;
+        }
+        mDriverPath = gpuService->getUpdatableDriverPath();
+        if (mDriverPath.empty()) {
+            return nullptr;
+        }
+        mDriverPath.append(UPDATABLE_DRIVER_ABI);
+        ALOGI("Driver path is setup via UPDATABLE_GFX_DRIVER: %s", mDriverPath.c_str());
     }
 
     auto vndkNamespace = android_get_exported_namespace("vndk");
diff --git a/libs/graphicsenv/IGpuService.cpp b/libs/graphicsenv/IGpuService.cpp
index de3503bcf0..fa25c5516d 100644
--- a/libs/graphicsenv/IGpuService.cpp
+++ b/libs/graphicsenv/IGpuService.cpp
@@ -27,11 +27,11 @@ class BpGpuService : public BpInterface<IGpuService> {
 public:
     explicit BpGpuService(const sp<IBinder>& impl) : BpInterface<IGpuService>(impl) {}
 
-    virtual void setGpuStats(const std::string& driverPackageName,
-                             const std::string& driverVersionName, uint64_t driverVersionCode,
-                             int64_t driverBuildTime, const std::string& appPackageName,
-                             const int32_t vulkanVersion, GpuStatsInfo::Driver driver,
-                             bool isDriverLoaded, int64_t driverLoadingTime) {
+    void setGpuStats(const std::string& driverPackageName, const std::string& driverVersionName,
+                     uint64_t driverVersionCode, int64_t driverBuildTime,
+                     const std::string& appPackageName, const int32_t vulkanVersion,
+                     GpuStatsInfo::Driver driver, bool isDriverLoaded,
+                     int64_t driverLoadingTime) override {
         Parcel data, reply;
         data.writeInterfaceToken(IGpuService::getInterfaceDescriptor());
 
@@ -48,8 +48,8 @@ public:
         remote()->transact(BnGpuService::SET_GPU_STATS, data, &reply, IBinder::FLAG_ONEWAY);
     }
 
-    virtual void setTargetStats(const std::string& appPackageName, const uint64_t driverVersionCode,
-                                const GpuStatsInfo::Stats stats, const uint64_t value) {
+    void setTargetStats(const std::string& appPackageName, const uint64_t driverVersionCode,
+                        const GpuStatsInfo::Stats stats, const uint64_t value) override {
         Parcel data, reply;
         data.writeInterfaceToken(IGpuService::getInterfaceDescriptor());
 
@@ -60,6 +60,27 @@ public:
 
         remote()->transact(BnGpuService::SET_TARGET_STATS, data, &reply, IBinder::FLAG_ONEWAY);
     }
+
+    void setUpdatableDriverPath(const std::string& driverPath) override {
+        Parcel data, reply;
+        data.writeInterfaceToken(IGpuService::getInterfaceDescriptor());
+        data.writeUtf8AsUtf16(driverPath);
+
+        remote()->transact(BnGpuService::SET_UPDATABLE_DRIVER_PATH, data, &reply,
+                           IBinder::FLAG_ONEWAY);
+    }
+
+    std::string getUpdatableDriverPath() override {
+        Parcel data, reply;
+        data.writeInterfaceToken(IGpuService::getInterfaceDescriptor());
+
+        status_t error = remote()->transact(BnGpuService::GET_UPDATABLE_DRIVER_PATH, data, &reply);
+        std::string driverPath;
+        if (error == OK) {
+            error = reply.readUtf8FromUtf16(&driverPath);
+        }
+        return driverPath;
+    }
 };
 
 IMPLEMENT_META_INTERFACE(GpuService, "android.graphicsenv.IGpuService");
@@ -126,6 +147,21 @@ status_t BnGpuService::onTransact(uint32_t code, const Parcel& data, Parcel* rep
 
             return OK;
         }
+        case SET_UPDATABLE_DRIVER_PATH: {
+            CHECK_INTERFACE(IGpuService, data, reply);
+
+            std::string driverPath;
+            if ((status = data.readUtf8FromUtf16(&driverPath)) != OK) return status;
+
+            setUpdatableDriverPath(driverPath);
+            return OK;
+        }
+        case GET_UPDATABLE_DRIVER_PATH: {
+            CHECK_INTERFACE(IGpuService, data, reply);
+
+            std::string driverPath = getUpdatableDriverPath();
+            return reply->writeUtf8AsUtf16(driverPath);
+        }
         case SHELL_COMMAND_TRANSACTION: {
             int in = data.readFileDescriptor();
             int out = data.readFileDescriptor();
diff --git a/libs/graphicsenv/include/graphicsenv/IGpuService.h b/libs/graphicsenv/include/graphicsenv/IGpuService.h
index c7c6d1e886..2d59fa0165 100644
--- a/libs/graphicsenv/include/graphicsenv/IGpuService.h
+++ b/libs/graphicsenv/include/graphicsenv/IGpuService.h
@@ -42,6 +42,10 @@ public:
     // set target stats.
     virtual void setTargetStats(const std::string& appPackageName, const uint64_t driverVersionCode,
                                 const GpuStatsInfo::Stats stats, const uint64_t value = 0) = 0;
+
+    // setter and getter for updatable driver path.
+    virtual void setUpdatableDriverPath(const std::string& driverPath) = 0;
+    virtual std::string getUpdatableDriverPath() = 0;
 };
 
 class BnGpuService : public BnInterface<IGpuService> {
@@ -49,6 +53,8 @@ public:
     enum IGpuServiceTag {
         SET_GPU_STATS = IBinder::FIRST_CALL_TRANSACTION,
         SET_TARGET_STATS,
+        SET_UPDATABLE_DRIVER_PATH,
+        GET_UPDATABLE_DRIVER_PATH,
         // Always append new enum to the end.
     };
 
diff --git a/services/gpuservice/GpuService.cpp b/services/gpuservice/GpuService.cpp
index f40ce71bda..304f1d059e 100644
--- a/services/gpuservice/GpuService.cpp
+++ b/services/gpuservice/GpuService.cpp
@@ -62,6 +62,14 @@ void GpuService::setTargetStats(const std::string& appPackageName, const uint64_
     mGpuStats->insertTargetStats(appPackageName, driverVersionCode, stats, value);
 }
 
+void GpuService::setUpdatableDriverPath(const std::string& driverPath) {
+    developerDriverPath = driverPath;
+}
+
+std::string GpuService::getUpdatableDriverPath() {
+    return developerDriverPath;
+}
+
 status_t GpuService::shellCommand(int /*in*/, int out, int err, std::vector<String16>& args) {
     ATRACE_CALL();
 
diff --git a/services/gpuservice/GpuService.h b/services/gpuservice/GpuService.h
index b3e34d559e..ba44fe04d4 100644
--- a/services/gpuservice/GpuService.h
+++ b/services/gpuservice/GpuService.h
@@ -50,6 +50,8 @@ private:
                      int64_t driverLoadingTime) override;
     void setTargetStats(const std::string& appPackageName, const uint64_t driverVersionCode,
                         const GpuStatsInfo::Stats stats, const uint64_t value) override;
+    void setUpdatableDriverPath(const std::string& driverPath) override;
+    std::string getUpdatableDriverPath() override;
 
     /*
      * IBinder interface
@@ -73,6 +75,7 @@ private:
      * Attributes
      */
     std::unique_ptr<GpuStats> mGpuStats;
+    std::string developerDriverPath;
 };
 
 } // namespace android