Add default Bluetooth HAL implementation
Also added initial target-side functional test.
Test: bluetooth_hidl_hal_test
Bug: 31972505
Change-Id: I1f574a5b2b53d7fbf65dbb4e1aaa5f8b6c5a9448
diff --git a/bluetooth/1.0/default/Android.bp b/bluetooth/1.0/default/Android.bp
new file mode 100644
index 0000000..4c7017c
--- /dev/null
+++ b/bluetooth/1.0/default/Android.bp
@@ -0,0 +1,36 @@
+//
+// Copyright (C) 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+ name: "android.hardware.bluetooth@1.0-impl",
+ relative_install_path: "hw",
+ srcs: [
+ "async_fd_watcher.cc",
+ "bluetooth_hci.cc",
+ "vendor_interface.cc",
+ ],
+ shared_libs: [
+ "liblog",
+ "libcutils",
+ "libhardware",
+ "libhwbinder",
+ "libbase",
+ "libcutils",
+ "libutils",
+ "libhidlbase",
+ "libhidltransport",
+ "android.hardware.bluetooth@1.0",
+ ],
+}
diff --git a/bluetooth/1.0/default/Android.mk b/bluetooth/1.0/default/Android.mk
new file mode 100644
index 0000000..08bfb4e
--- /dev/null
+++ b/bluetooth/1.0/default/Android.mk
@@ -0,0 +1,40 @@
+#
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_MODULE := android.hardware.bluetooth@1.0-service
+LOCAL_INIT_RC := android.hardware.bluetooth@1.0-service.rc
+LOCAL_SRC_FILES := \
+ service.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+ liblog \
+ libcutils \
+ libdl \
+ libbase \
+ libutils \
+ libhardware_legacy \
+ libhardware \
+
+LOCAL_SHARED_LIBRARIES += \
+ libhwbinder \
+ libhidlbase \
+ libhidltransport \
+ android.hardware.bluetooth@1.0 \
+
+include $(BUILD_EXECUTABLE)
diff --git a/bluetooth/1.0/default/android.hardware.bluetooth@1.0-service.rc b/bluetooth/1.0/default/android.hardware.bluetooth@1.0-service.rc
new file mode 100644
index 0000000..8c5c02a
--- /dev/null
+++ b/bluetooth/1.0/default/android.hardware.bluetooth@1.0-service.rc
@@ -0,0 +1,4 @@
+service bluetooth-1-0 /system/bin/hw/android.hardware.bluetooth@1.0-service
+ class hal
+ user bluetooth
+ group bluetooth
diff --git a/bluetooth/1.0/default/async_fd_watcher.cc b/bluetooth/1.0/default/async_fd_watcher.cc
new file mode 100644
index 0000000..636b4b6
--- /dev/null
+++ b/bluetooth/1.0/default/async_fd_watcher.cc
@@ -0,0 +1,133 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "async_fd_watcher.h"
+
+#include <algorithm>
+#include <atomic>
+#include <condition_variable>
+#include <mutex>
+#include <thread>
+#include <vector>
+#include "fcntl.h"
+#include "sys/select.h"
+#include "unistd.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+int AsyncFdWatcher::WatchFdForNonBlockingReads(
+ int file_descriptor, const ReadCallback& on_read_fd_ready_callback) {
+ // Add file descriptor and callback
+ {
+ std::unique_lock<std::mutex> guard(internal_mutex_);
+ read_fd_ = file_descriptor;
+ cb_ = on_read_fd_ready_callback;
+ }
+
+ // Start the thread if not started yet
+ int started = tryStartThread();
+ if (started != 0) {
+ return started;
+ }
+
+ return 0;
+}
+
+void AsyncFdWatcher::StopWatchingFileDescriptor() { stopThread(); }
+
+AsyncFdWatcher::~AsyncFdWatcher() {}
+
+// Make sure to call this with at least one file descriptor ready to be
+// watched upon or the thread routine will return immediately
+int AsyncFdWatcher::tryStartThread() {
+ if (std::atomic_exchange(&running_, true)) return 0;
+
+ // Set up the communication channel
+ int pipe_fds[2];
+ if (pipe2(pipe_fds, O_NONBLOCK)) return -1;
+
+ notification_listen_fd_ = pipe_fds[0];
+ notification_write_fd_ = pipe_fds[1];
+
+ thread_ = std::thread([this]() { ThreadRoutine(); });
+ if (!thread_.joinable()) return -1;
+
+ return 0;
+}
+
+int AsyncFdWatcher::stopThread() {
+ if (!std::atomic_exchange(&running_, false)) return 0;
+
+ notifyThread();
+ if (std::this_thread::get_id() != thread_.get_id()) {
+ thread_.join();
+ }
+
+ {
+ std::unique_lock<std::mutex> guard(internal_mutex_);
+ cb_ = nullptr;
+ read_fd_ = -1;
+ }
+
+ return 0;
+}
+
+int AsyncFdWatcher::notifyThread() {
+ uint8_t buffer[] = {0};
+ if (TEMP_FAILURE_RETRY(write(notification_write_fd_, &buffer, 1)) < 0) {
+ return -1;
+ }
+ return 0;
+}
+
+void AsyncFdWatcher::ThreadRoutine() {
+ while (running_) {
+ fd_set read_fds;
+ FD_ZERO(&read_fds);
+ FD_SET(notification_listen_fd_, &read_fds);
+ FD_SET(read_fd_, &read_fds);
+
+ // Wait until there is data available to read on some FD
+ int nfds = std::max(notification_listen_fd_, read_fd_);
+ int retval = select(nfds + 1, &read_fds, NULL, NULL, NULL);
+ if (retval <= 0) continue; // there was some error or a timeout
+
+ // Read data from the notification FD
+ if (FD_ISSET(notification_listen_fd_, &read_fds)) {
+ char buffer[] = {0};
+ TEMP_FAILURE_RETRY(read(notification_listen_fd_, buffer, 1));
+ }
+
+ // Make sure we're still running
+ if (!running_) break;
+
+ // Invoke the data ready callback if appropriate
+ if (FD_ISSET(read_fd_, &read_fds)) {
+ std::unique_lock<std::mutex> guard(internal_mutex_);
+ if (cb_) cb_(read_fd_);
+ }
+ }
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/1.0/default/async_fd_watcher.h b/bluetooth/1.0/default/async_fd_watcher.h
new file mode 100644
index 0000000..1e4da8c
--- /dev/null
+++ b/bluetooth/1.0/default/async_fd_watcher.h
@@ -0,0 +1,63 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <mutex>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+using ReadCallback = std::function<void(int)>;
+
+class AsyncFdWatcher {
+ public:
+ AsyncFdWatcher() = default;
+ ~AsyncFdWatcher();
+
+ int WatchFdForNonBlockingReads(int file_descriptor,
+ const ReadCallback& on_read_fd_ready_callback);
+ void StopWatchingFileDescriptor();
+
+ private:
+ AsyncFdWatcher(const AsyncFdWatcher&) = delete;
+ AsyncFdWatcher& operator=(const AsyncFdWatcher&) = delete;
+
+ int tryStartThread();
+ int stopThread();
+ int notifyThread();
+ void ThreadRoutine();
+
+ std::atomic_bool running_{false};
+ std::thread thread_;
+ std::mutex internal_mutex_;
+
+ int read_fd_;
+ int notification_listen_fd_;
+ int notification_write_fd_;
+ ReadCallback cb_;
+};
+
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/1.0/default/bluetooth_hci.cc b/bluetooth/1.0/default/bluetooth_hci.cc
new file mode 100644
index 0000000..d12bfb9
--- /dev/null
+++ b/bluetooth/1.0/default/bluetooth_hci.cc
@@ -0,0 +1,95 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#define LOG_TAG "android.hardware.bluetooth@1.0-impl"
+#include <utils/Log.h>
+
+#include "bluetooth_hci.h"
+#include "vendor_interface.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+static const uint8_t HCI_DATA_TYPE_COMMAND = 1;
+static const uint8_t HCI_DATA_TYPE_ACL = 2;
+static const uint8_t HCI_DATA_TYPE_SCO = 3;
+
+Return<Status> BluetoothHci::initialize(
+ const ::android::sp<IBluetoothHciCallbacks>& cb) {
+ ALOGW("BluetoothHci::initialize()");
+ event_cb_ = cb;
+
+ bool rc = VendorInterface::Initialize(
+ [this](HciPacketType type, const hidl_vec<uint8_t>& packet) {
+ switch (type) {
+ case HCI_PACKET_TYPE_EVENT:
+ event_cb_->hciEventReceived(packet);
+ break;
+ case HCI_PACKET_TYPE_ACL_DATA:
+ event_cb_->aclDataReceived(packet);
+ break;
+ case HCI_PACKET_TYPE_SCO_DATA:
+ event_cb_->scoDataReceived(packet);
+ break;
+ default:
+ ALOGE("%s Unexpected event type %d", __func__, type);
+ break;
+ }
+ });
+ if (!rc) return Status::INITIALIZATION_ERROR;
+
+ return Status::SUCCESS;
+}
+
+Return<void> BluetoothHci::close() {
+ ALOGW("BluetoothHci::close()");
+ VendorInterface::Shutdown();
+ return Void();
+}
+
+Return<void> BluetoothHci::sendHciCommand(const hidl_vec<uint8_t>& command) {
+ sendDataToController(HCI_DATA_TYPE_COMMAND, command);
+ return Void();
+}
+
+Return<void> BluetoothHci::sendAclData(const hidl_vec<uint8_t>& data) {
+ sendDataToController(HCI_DATA_TYPE_ACL, data);
+ return Void();
+}
+
+Return<void> BluetoothHci::sendScoData(const hidl_vec<uint8_t>& data) {
+ sendDataToController(HCI_DATA_TYPE_SCO, data);
+ return Void();
+}
+
+void BluetoothHci::sendDataToController(const uint8_t type,
+ const hidl_vec<uint8_t>& data) {
+ VendorInterface::get()->Send(&type, 1);
+ VendorInterface::get()->Send(data.data(), data.size());
+}
+
+IBluetoothHci* HIDL_FETCH_IBluetoothHci(const char* /* name */) {
+ return new BluetoothHci();
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/1.0/default/bluetooth_hci.h b/bluetooth/1.0/default/bluetooth_hci.h
new file mode 100644
index 0000000..d297570
--- /dev/null
+++ b/bluetooth/1.0/default/bluetooth_hci.h
@@ -0,0 +1,55 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#ifndef HIDL_GENERATED_android_hardware_bluetooth_V1_0_BluetoothHci_H_
+#define HIDL_GENERATED_android_hardware_bluetooth_V1_0_BluetoothHci_H_
+
+#include <android/hardware/bluetooth/1.0/IBluetoothHci.h>
+
+#include <hidl/MQDescriptor.h>
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::Return;
+using ::android::hardware::hidl_vec;
+
+class BluetoothHci : public IBluetoothHci {
+ public:
+ Return<Status> initialize(
+ const ::android::sp<IBluetoothHciCallbacks>& cb) override;
+ Return<void> sendHciCommand(const hidl_vec<uint8_t>& packet) override;
+ Return<void> sendAclData(const hidl_vec<uint8_t>& data) override;
+ Return<void> sendScoData(const hidl_vec<uint8_t>& data) override;
+ Return<void> close() override;
+
+ private:
+ void sendDataToController(const uint8_t type, const hidl_vec<uint8_t>& data);
+ ::android::sp<IBluetoothHciCallbacks> event_cb_;
+};
+
+extern "C" IBluetoothHci* HIDL_FETCH_IBluetoothHci(const char* name);
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
+
+#endif // HIDL_GENERATED_android_hardware_bluetooth_V1_0_BluetoothHci_H_
diff --git a/bluetooth/1.0/default/bt_vendor_lib.h b/bluetooth/1.0/default/bt_vendor_lib.h
new file mode 100644
index 0000000..c140e52
--- /dev/null
+++ b/bluetooth/1.0/default/bt_vendor_lib.h
@@ -0,0 +1,435 @@
+/******************************************************************************
+ *
+ * Copyright (C) 2009-2012 Broadcom Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ ******************************************************************************/
+
+#ifndef BT_VENDOR_LIB_H
+#define BT_VENDOR_LIB_H
+
+#include <stdint.h>
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Struct types */
+
+/** Typedefs and defines */
+
+/** Vendor specific operations OPCODE */
+typedef enum {
+ /* [operation]
+ * Power on or off the BT Controller.
+ * [input param]
+ * A pointer to int type with content of bt_vendor_power_state_t.
+ * Typecasting conversion: (int *) param.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_POWER_CTRL,
+
+ /* [operation]
+ * Perform any vendor specific initialization or configuration
+ * on the BT Controller. This is called before stack initialization.
+ * [input param]
+ * None.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * Must call fwcfg_cb to notify the stack of the completion of vendor
+ * specific initialization once it has been done.
+ */
+ BT_VND_OP_FW_CFG,
+
+ /* [operation]
+ * Perform any vendor specific SCO/PCM configuration on the BT
+ * Controller.
+ * This is called after stack initialization.
+ * [input param]
+ * None.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * Must call scocfg_cb to notify the stack of the completion of vendor
+ * specific SCO configuration once it has been done.
+ */
+ BT_VND_OP_SCO_CFG,
+
+ /* [operation]
+ * Open UART port on where the BT Controller is attached.
+ * This is called before stack initialization.
+ * [input param]
+ * A pointer to int array type for open file descriptors.
+ * The mapping of HCI channel to fd slot in the int array is given in
+ * bt_vendor_hci_channels_t.
+ * And, it requires the vendor lib to fill up the content before
+ * returning
+ * the call.
+ * Typecasting conversion: (int (*)[]) param.
+ * [return]
+ * Numbers of opened file descriptors.
+ * Valid number:
+ * 1 - CMD/EVT/ACL-In/ACL-Out via the same fd (e.g. UART)
+ * 2 - CMD/EVT on one fd, and ACL-In/ACL-Out on the other fd
+ * 4 - CMD, EVT, ACL-In, ACL-Out are on their individual fd
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_USERIAL_OPEN,
+
+ /* [operation]
+ * Close the previously opened UART port.
+ * [input param]
+ * None.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_USERIAL_CLOSE,
+
+ /* [operation]
+ * Get the LPM idle timeout in milliseconds.
+ * The stack uses this information to launch a timer delay before it
+ * attempts to de-assert LPM WAKE signal once downstream HCI packet
+ * has been delivered.
+ * [input param]
+ * A pointer to uint32_t type which is passed in by the stack. And, it
+ * requires the vendor lib to fill up the content before returning
+ * the call.
+ * Typecasting conversion: (uint32_t *) param.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_GET_LPM_IDLE_TIMEOUT,
+
+ /* [operation]
+ * Enable or disable LPM mode on BT Controller.
+ * [input param]
+ * A pointer to uint8_t type with content of bt_vendor_lpm_mode_t.
+ * Typecasting conversion: (uint8_t *) param.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * Must call lpm_cb to notify the stack of the completion of LPM
+ * disable/enable process once it has been done.
+ */
+ BT_VND_OP_LPM_SET_MODE,
+
+ /* [operation]
+ * Assert or Deassert LPM WAKE on BT Controller.
+ * [input param]
+ * A pointer to uint8_t type with content of bt_vendor_lpm_wake_state_t.
+ * Typecasting conversion: (uint8_t *) param.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_LPM_WAKE_SET_STATE,
+
+ /* [operation]
+ * Perform any vendor specific commands related to audio state changes.
+ * [input param]
+ * a pointer to bt_vendor_op_audio_state_t indicating what audio state is
+ * set.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * None.
+ */
+ BT_VND_OP_SET_AUDIO_STATE,
+
+ /* [operation]
+ * The epilog call to the vendor module so that it can perform any
+ * vendor-specific processes (e.g. send a HCI_RESET to BT Controller)
+ * before the caller calls for cleanup().
+ * [input param]
+ * None.
+ * [return]
+ * 0 - default, don't care.
+ * [callback]
+ * Must call epilog_cb to notify the stack of the completion of vendor
+ * specific epilog process once it has been done.
+ */
+ BT_VND_OP_EPILOG,
+
+ /* [operation]
+ * Call to the vendor module so that it can perform all vendor-specific
+ * operations to start offloading a2dp media encode & tx.
+ * [input param]
+ * pointer to bt_vendor_op_a2dp_offload_start_t containing elements
+ * required for VND FW to setup a2dp offload.
+ * [return]
+ * 0 - default, dont care.
+ * [callback]
+ * Must call a2dp_offload_start_cb to notify the stack of the
+ * completion of vendor specific setup process once it has been done.
+ */
+ BT_VND_OP_A2DP_OFFLOAD_START,
+
+ /* [operation]
+ * Call to the vendor module so that it can perform all vendor-specific
+ * operations to suspend offloading a2dp media encode & tx.
+ * [input param]
+ * pointer to bt_vendor_op_a2dp_offload_t containing elements
+ * required for VND FW to setup a2dp offload.
+ * [return]
+ * 0 - default, dont care.
+ * [callback]
+ * Must call a2dp_offload_cb to notify the stack of the
+ * completion of vendor specific setup process once it has been done.
+ */
+ BT_VND_OP_A2DP_OFFLOAD_STOP,
+
+} bt_vendor_opcode_t;
+
+/** Power on/off control states */
+typedef enum {
+ BT_VND_PWR_OFF,
+ BT_VND_PWR_ON,
+} bt_vendor_power_state_t;
+
+/** Define HCI channel identifier in the file descriptors array
+ used in BT_VND_OP_USERIAL_OPEN operation.
+ */
+typedef enum {
+ CH_CMD, // HCI Command channel
+ CH_EVT, // HCI Event channel
+ CH_ACL_OUT, // HCI ACL downstream channel
+ CH_ACL_IN, // HCI ACL upstream channel
+
+ CH_MAX // Total channels
+} bt_vendor_hci_channels_t;
+
+/** LPM disable/enable request */
+typedef enum {
+ BT_VND_LPM_DISABLE,
+ BT_VND_LPM_ENABLE,
+} bt_vendor_lpm_mode_t;
+
+/** LPM WAKE set state request */
+typedef enum {
+ BT_VND_LPM_WAKE_ASSERT,
+ BT_VND_LPM_WAKE_DEASSERT,
+} bt_vendor_lpm_wake_state_t;
+
+/** Callback result values */
+typedef enum {
+ BT_VND_OP_RESULT_SUCCESS,
+ BT_VND_OP_RESULT_FAIL,
+} bt_vendor_op_result_t;
+
+/** audio (SCO) state changes triggering VS commands for configuration */
+typedef struct {
+ uint16_t handle;
+ uint16_t peer_codec;
+ uint16_t state;
+} bt_vendor_op_audio_state_t;
+
+/*
+ * Bluetooth Host/Controller Vendor callback structure.
+ */
+
+/* vendor initialization/configuration callback */
+typedef void (*cfg_result_cb)(bt_vendor_op_result_t result);
+
+/* datapath buffer allocation callback (callout)
+ *
+ * Vendor lib needs to request a buffer through the alloc callout function
+ * from HCI lib if the buffer is for constructing a HCI Command packet which
+ * will be sent through xmit_cb to BT Controller.
+ *
+ * For each buffer allocation, the requested size needs to be big enough to
+ * accommodate the below header plus a complete HCI packet --
+ * typedef struct
+ * {
+ * uint16_t event;
+ * uint16_t len;
+ * uint16_t offset;
+ * uint16_t layer_specific;
+ * } HC_BT_HDR;
+ *
+ * HCI lib returns a pointer to the buffer where Vendor lib should use to
+ * construct a HCI command packet as below format:
+ *
+ * --------------------------------------------
+ * | HC_BT_HDR | HCI command |
+ * --------------------------------------------
+ * where
+ * HC_BT_HDR.event = 0x2000;
+ * HC_BT_HDR.len = Length of HCI command;
+ * HC_BT_HDR.offset = 0;
+ * HC_BT_HDR.layer_specific = 0;
+ *
+ * For example, a HCI_RESET Command will be formed as
+ * ------------------------
+ * | HC_BT_HDR |03|0c|00|
+ * ------------------------
+ * with
+ * HC_BT_HDR.event = 0x2000;
+ * HC_BT_HDR.len = 3;
+ * HC_BT_HDR.offset = 0;
+ * HC_BT_HDR.layer_specific = 0;
+ */
+typedef void* (*malloc_cb)(int size);
+
+/* datapath buffer deallocation callback (callout) */
+typedef void (*mdealloc_cb)(void* p_buf);
+
+/* define callback of the cmd_xmit_cb
+ *
+ * The callback function which HCI lib will call with the return of command
+ * complete packet. Vendor lib is responsible for releasing the buffer passed
+ * in at the p_mem parameter by calling dealloc callout function.
+ */
+typedef void (*tINT_CMD_CBACK)(void* p_mem);
+
+/* hci command packet transmit callback (callout)
+ *
+ * Vendor lib calls xmit_cb callout function in order to send a HCI Command
+ * packet to BT Controller. The buffer carrying HCI Command packet content
+ * needs to be first allocated through the alloc callout function.
+ * HCI lib will release the buffer for Vendor lib once it has delivered the
+ * packet content to BT Controller.
+ *
+ * Vendor lib needs also provide a callback function (p_cback) which HCI lib
+ * will call with the return of command complete packet.
+ *
+ * The opcode parameter gives the HCI OpCode (combination of OGF and OCF) of
+ * HCI Command packet. For example, opcode = 0x0c03 for the HCI_RESET command
+ * packet.
+ */
+typedef uint8_t (*cmd_xmit_cb)(uint16_t opcode, void* p_buf,
+ tINT_CMD_CBACK p_cback);
+
+typedef void (*cfg_a2dp_cb)(bt_vendor_op_result_t result, bt_vendor_opcode_t op,
+ uint8_t bta_av_handle);
+
+typedef struct {
+ /** set to sizeof(bt_vendor_callbacks_t) */
+ size_t size;
+
+ /*
+ * Callback and callout functions have implemented in HCI libray
+ * (libbt-hci.so).
+ */
+
+ /* notifies caller result of firmware configuration request */
+ cfg_result_cb fwcfg_cb;
+
+ /* notifies caller result of sco configuration request */
+ cfg_result_cb scocfg_cb;
+
+ /* notifies caller result of lpm enable/disable */
+ cfg_result_cb lpm_cb;
+
+ /* notifies the result of codec setting */
+ cfg_result_cb audio_state_cb;
+
+ /* buffer allocation request */
+ malloc_cb alloc;
+
+ /* buffer deallocation request */
+ mdealloc_cb dealloc;
+
+ /* hci command packet transmit request */
+ cmd_xmit_cb xmit_cb;
+
+ /* notifies caller completion of epilog process */
+ cfg_result_cb epilog_cb;
+
+ /* notifies status of a2dp offload cmd's */
+ cfg_a2dp_cb a2dp_offload_cb;
+} bt_vendor_callbacks_t;
+
+/** A2DP offload request */
+typedef struct {
+ uint8_t bta_av_handle; /* BTA_AV Handle for callbacks */
+ uint16_t xmit_quota; /* Total ACL quota for light stack */
+ uint16_t acl_data_size; /* Max ACL data size across HCI transport */
+ uint16_t stream_mtu;
+ uint16_t local_cid;
+ uint16_t remote_cid;
+ uint16_t lm_handle;
+ uint8_t is_flushable; /* true if flushable channel */
+ uint32_t stream_source;
+ uint8_t codec_info[10]; /* Codec capabilities array */
+} bt_vendor_op_a2dp_offload_t;
+
+/*
+ * Bluetooth Host/Controller VENDOR Interface
+ */
+typedef struct {
+ /** Set to sizeof(bt_vndor_interface_t) */
+ size_t size;
+
+ /*
+ * Functions need to be implemented in Vendor libray (libbt-vendor.so).
+ */
+
+ /**
+ * Caller will open the interface and pass in the callback routines
+ * to the implemenation of this interface.
+ */
+ int (*init)(const bt_vendor_callbacks_t* p_cb, unsigned char* local_bdaddr);
+
+ /** Vendor specific operations */
+ int (*op)(bt_vendor_opcode_t opcode, void* param);
+
+ /** Closes the interface */
+ void (*cleanup)(void);
+} bt_vendor_interface_t;
+
+/*
+ * External shared lib functions/data
+ */
+
+/* Entry point of DLib --
+ * Vendor library needs to implement the body of bt_vendor_interface_t
+ * structure and uses the below name as the variable name. HCI library
+ * will use this symbol name to get address of the object through the
+ * dlsym call.
+ */
+extern const bt_vendor_interface_t BLUETOOTH_VENDOR_LIB_INTERFACE;
+
+// MODIFICATION FOR NEW HAL/HIDL IMPLEMENTATION:
+// EXPOSE THE BT_HDR STRUCT HERE FOR THE VENDOR INTERFACE
+// ONLY, WITHOUT REQUIRING INCLUDES FROM system/bt OR OTHER
+// DIRECTORIES.
+// ONLY USED INSIDE transmit_cb.
+// DO NOT USE IN NEW HAL IMPLEMENTATIONS GOING FORWARD
+typedef struct
+{
+ uint16_t event;
+ uint16_t len;
+ uint16_t offset;
+ uint16_t layer_specific;
+ uint8_t data[];
+} HC_BT_HDR;
+// /MODIFICATION
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BT_VENDOR_LIB_H */
diff --git a/bluetooth/1.0/default/hci_internals.h b/bluetooth/1.0/default/hci_internals.h
new file mode 100644
index 0000000..d839590
--- /dev/null
+++ b/bluetooth/1.0/default/hci_internals.h
@@ -0,0 +1,44 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+// HCI UART transport packet types (Volume 4, Part A, 2)
+enum HciPacketType {
+ HCI_PACKET_TYPE_UNKNOWN = 0,
+ HCI_PACKET_TYPE_COMMAND = 1,
+ HCI_PACKET_TYPE_ACL_DATA = 2,
+ HCI_PACKET_TYPE_SCO_DATA = 3,
+ HCI_PACKET_TYPE_EVENT = 4
+};
+
+// 2 bytes for opcode, 1 byte for parameter length (Volume 2, Part E, 5.4.1)
+const size_t HCI_COMMAND_PREAMBLE_SIZE = 3;
+const size_t HCI_LENGTH_OFFSET_CMD = 2;
+
+// 2 bytes for handle, 2 bytes for data length (Volume 2, Part E, 5.4.2)
+const size_t HCI_ACL_PREAMBLE_SIZE = 4;
+const size_t HCI_LENGTH_OFFSET_ACL = 2;
+
+// 2 bytes for handle, 1 byte for data length (Volume 2, Part E, 5.4.3)
+const size_t HCI_SCO_PREAMBLE_SIZE = 3;
+const size_t HCI_LENGTH_OFFSET_SCO = 2;
+
+// 1 byte for event code, 1 byte for parameter length (Volume 2, Part E, 5.4.4)
+const size_t HCI_EVENT_PREAMBLE_SIZE = 2;
+const size_t HCI_LENGTH_OFFSET_EVT = 1;
+
+const size_t HCI_PREAMBLE_SIZE_MAX = HCI_ACL_PREAMBLE_SIZE;
diff --git a/bluetooth/1.0/default/service.cpp b/bluetooth/1.0/default/service.cpp
new file mode 100644
index 0000000..a3c3cad
--- /dev/null
+++ b/bluetooth/1.0/default/service.cpp
@@ -0,0 +1,29 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#define LOG_TAG "android.hardware.bluetooth@1.0-service"
+
+#include <android/hardware/bluetooth/1.0/IBluetoothHci.h>
+
+#include <hidl/LegacySupport.h>
+
+// Generated HIDL files
+using android::hardware::bluetooth::V1_0::IBluetoothHci;
+using android::hardware::defaultPassthroughServiceImplementation;
+
+int main() {
+ return defaultPassthroughServiceImplementation<IBluetoothHci>("bluetooth");
+}
diff --git a/bluetooth/1.0/default/vendor_interface.cc b/bluetooth/1.0/default/vendor_interface.cc
new file mode 100644
index 0000000..7efd5bd
--- /dev/null
+++ b/bluetooth/1.0/default/vendor_interface.cc
@@ -0,0 +1,351 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#include "vendor_interface.h"
+
+#define LOG_TAG "android.hardware.bluetooth@1.0-impl"
+#include <android-base/logging.h>
+#include <utils/Log.h>
+
+#include <dlfcn.h>
+
+static const char* VENDOR_LIBRARY_NAME = "libbt-vendor.so";
+static const char* VENDOR_LIBRARY_SYMBOL_NAME =
+ "BLUETOOTH_VENDOR_LIB_INTERFACE";
+
+static const int INVALID_FD = -1;
+
+namespace {
+
+using android::hardware::bluetooth::V1_0::implementation::VendorInterface;
+
+tINT_CMD_CBACK internal_command_cb;
+VendorInterface* g_vendor_interface = nullptr;
+
+const size_t preamble_size_for_type[] = {
+ 0, HCI_COMMAND_PREAMBLE_SIZE, HCI_ACL_PREAMBLE_SIZE, HCI_SCO_PREAMBLE_SIZE,
+ HCI_EVENT_PREAMBLE_SIZE};
+const size_t packet_length_offset_for_type[] = {
+ 0, HCI_LENGTH_OFFSET_CMD, HCI_LENGTH_OFFSET_ACL, HCI_LENGTH_OFFSET_SCO,
+ HCI_LENGTH_OFFSET_EVT};
+
+size_t HciGetPacketLengthForType(
+ HciPacketType type, const android::hardware::hidl_vec<uint8_t>& packet) {
+ size_t offset = packet_length_offset_for_type[type];
+ if (type == HCI_PACKET_TYPE_ACL_DATA) {
+ return (((packet[offset + 1]) << 8) | packet[offset]);
+ }
+ return packet[offset];
+}
+
+HC_BT_HDR* WrapPacketAndCopy(uint16_t event,
+ const android::hardware::hidl_vec<uint8_t>& data) {
+ size_t packet_size = data.size() + sizeof(HC_BT_HDR);
+ HC_BT_HDR* packet = reinterpret_cast<HC_BT_HDR*>(new uint8_t[packet_size]);
+ packet->offset = 0;
+ packet->len = data.size();
+ packet->layer_specific = 0;
+ packet->event = event;
+ // TODO(eisenbach): Avoid copy here; if BT_HDR->data can be enusred to
+ // be the only way the data is accessed, a pointer could be passed here...
+ memcpy(packet->data, data.data(), data.size());
+ return packet;
+}
+
+uint8_t transmit_cb(uint16_t opcode, void* buffer, tINT_CMD_CBACK callback) {
+ ALOGV("%s opcode: 0x%04x, ptr: %p", __func__, opcode, buffer);
+ HC_BT_HDR* bt_hdr = reinterpret_cast<HC_BT_HDR*>(buffer);
+
+ internal_command_cb = callback;
+ uint8_t type = HCI_PACKET_TYPE_COMMAND;
+ VendorInterface::get()->SendPrivate(&type, 1);
+ VendorInterface::get()->SendPrivate(bt_hdr->data, bt_hdr->len);
+ return true;
+}
+
+void firmware_config_cb(bt_vendor_op_result_t result) {
+ ALOGD("%s result: %d", __func__, result);
+ VendorInterface::get()->OnFirmwareConfigured(result);
+}
+
+void sco_config_cb(bt_vendor_op_result_t result) {
+ ALOGD("%s result: %d", __func__, result);
+}
+
+void low_power_mode_cb(bt_vendor_op_result_t result) {
+ ALOGD("%s result: %d", __func__, result);
+}
+
+void sco_audiostate_cb(bt_vendor_op_result_t result) {
+ ALOGD("%s result: %d", __func__, result);
+}
+
+void* buffer_alloc_cb(int size) {
+ void* p = new uint8_t[size];
+ ALOGV("%s pts: %p, size: %d", __func__, p, size);
+ return p;
+}
+
+void buffer_free_cb(void* buffer) {
+ ALOGV("%s ptr: %p", __func__, buffer);
+ delete[] reinterpret_cast<uint8_t*>(buffer);
+}
+
+void epilog_cb(bt_vendor_op_result_t result) {
+ ALOGD("%s result: %d", __func__, result);
+}
+
+void a2dp_offload_cb(bt_vendor_op_result_t result, bt_vendor_opcode_t op,
+ uint8_t av_handle) {
+ ALOGD("%s result: %d, op: %d, handle: %d", __func__, result, op, av_handle);
+}
+
+const bt_vendor_callbacks_t lib_callbacks = {
+ sizeof(lib_callbacks), firmware_config_cb, sco_config_cb,
+ low_power_mode_cb, sco_audiostate_cb, buffer_alloc_cb,
+ buffer_free_cb, transmit_cb, epilog_cb,
+ a2dp_offload_cb};
+
+} // namespace
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+bool VendorInterface::Initialize(PacketReadCallback packet_read_cb) {
+ assert(!g_vendor_interface);
+ g_vendor_interface = new VendorInterface();
+ return g_vendor_interface->Open(packet_read_cb);
+}
+
+void VendorInterface::Shutdown() {
+ CHECK(g_vendor_interface);
+ g_vendor_interface->Close();
+ delete g_vendor_interface;
+ g_vendor_interface = nullptr;
+}
+
+VendorInterface* VendorInterface::get() { return g_vendor_interface; }
+
+bool VendorInterface::Open(PacketReadCallback packet_read_cb) {
+ // TODO(eisenbach): P0 - get local BD address somehow
+ uint8_t local_bda[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
+
+ firmware_configured_ = false;
+ packet_read_cb_ = packet_read_cb;
+
+ // Initialize vendor interface
+
+ lib_handle_ = dlopen(VENDOR_LIBRARY_NAME, RTLD_NOW);
+ if (!lib_handle_) {
+ ALOGE("%s unable to open %s (%s)", __func__, VENDOR_LIBRARY_NAME,
+ dlerror());
+ return false;
+ }
+
+ lib_interface_ = reinterpret_cast<bt_vendor_interface_t*>(
+ dlsym(lib_handle_, VENDOR_LIBRARY_SYMBOL_NAME));
+ if (!lib_interface_) {
+ ALOGE("%s unable to find symbol %s in %s (%s)", __func__,
+ VENDOR_LIBRARY_SYMBOL_NAME, VENDOR_LIBRARY_NAME, dlerror());
+ return false;
+ }
+
+ int status = lib_interface_->init(&lib_callbacks, (unsigned char*)local_bda);
+ if (status) {
+ ALOGE("%s unable to initialize vendor library: %d", __func__, status);
+ return false;
+ }
+
+ ALOGD("%s vendor library loaded", __func__);
+
+ // Power cycle chip
+
+ int power_state = BT_VND_PWR_OFF;
+ lib_interface_->op(BT_VND_OP_POWER_CTRL, &power_state);
+ power_state = BT_VND_PWR_ON;
+ lib_interface_->op(BT_VND_OP_POWER_CTRL, &power_state);
+
+ // Get the UART socket
+
+ int fd_list[CH_MAX] = {0};
+ int fd_count = lib_interface_->op(BT_VND_OP_USERIAL_OPEN, &fd_list);
+
+ if (fd_count != 1) {
+ ALOGE("%s fd count %d != 1; we can't handle this currently...", __func__,
+ fd_count);
+ return false;
+ }
+
+ uart_fd_ = fd_list[0];
+ if (uart_fd_ == INVALID_FD) {
+ ALOGE("%s unable to determine UART fd", __func__);
+ return false;
+ }
+
+ ALOGD("%s UART fd: %d", __func__, uart_fd_);
+
+ fd_watcher_.WatchFdForNonBlockingReads(uart_fd_,
+ [this](int fd) { OnDataReady(fd); });
+
+ // Start configuring the firmware
+ lib_interface_->op(BT_VND_OP_FW_CFG, nullptr);
+
+ return true;
+}
+
+void VendorInterface::Close() {
+ fd_watcher_.StopWatchingFileDescriptor();
+
+ if (lib_interface_ != nullptr) {
+ lib_interface_->op(BT_VND_OP_USERIAL_CLOSE, nullptr);
+ uart_fd_ = INVALID_FD;
+ int power_state = BT_VND_PWR_OFF;
+ lib_interface_->op(BT_VND_OP_POWER_CTRL, &power_state);
+ }
+
+ if (lib_handle_ != nullptr) {
+ dlclose(lib_handle_);
+ lib_handle_ = nullptr;
+ }
+
+ firmware_configured_ = false;
+}
+
+size_t VendorInterface::Send(const uint8_t* data, size_t length) {
+ if (firmware_configured_ && queued_data_.size() == 0)
+ return SendPrivate(data, length);
+
+ if (!firmware_configured_) {
+ ALOGI("%s queueing command", __func__);
+ queued_data_.resize(queued_data_.size() + length);
+ uint8_t* append_ptr = &queued_data_[queued_data_.size() - length];
+ memcpy(append_ptr, data, length);
+ return length;
+ }
+
+ ALOGI("%s sending queued command", __func__);
+ SendPrivate(queued_data_.data(), queued_data_.size());
+ queued_data_.resize(0);
+
+ ALOGI("%s done sending queued command", __func__);
+
+ return SendPrivate(data, length);
+}
+
+size_t VendorInterface::SendPrivate(const uint8_t* data, size_t length) {
+ if (uart_fd_ == INVALID_FD) return 0;
+
+ size_t transmitted_length = 0;
+ while (length > 0) {
+ ssize_t ret =
+ TEMP_FAILURE_RETRY(write(uart_fd_, data + transmitted_length, length));
+
+ if (ret == -1) {
+ if (errno == EAGAIN) continue;
+ ALOGE("%s error writing to UART (%s)", __func__, strerror(errno));
+ break;
+
+ } else if (ret == 0) {
+ // Nothing written :(
+ ALOGE("%s zero bytes written - something went wrong...", __func__);
+ break;
+ }
+
+ transmitted_length += ret;
+ length -= ret;
+ }
+
+ return transmitted_length;
+}
+
+void VendorInterface::OnFirmwareConfigured(uint8_t result) {
+ ALOGI("%s: result = %d", __func__, result);
+ firmware_configured_ = true;
+ VendorInterface::get()->Send(NULL, 0);
+}
+
+void VendorInterface::OnDataReady(int fd) {
+ switch (hci_parser_state_) {
+ case HCI_IDLE: {
+ uint8_t buffer[1] = {0};
+ size_t bytes_read = TEMP_FAILURE_RETRY(read(fd, buffer, 1));
+ CHECK(bytes_read == 1);
+ hci_packet_type_ = static_cast<HciPacketType>(buffer[0]);
+ // TODO(eisenbach): Check for workaround(s)
+ CHECK(hci_packet_type_ >= HCI_PACKET_TYPE_ACL_DATA &&
+ hci_packet_type_ <= HCI_PACKET_TYPE_EVENT)
+ << "buffer[0] = " << buffer[0];
+ hci_parser_state_ = HCI_TYPE_READY;
+ hci_packet_.resize(HCI_PREAMBLE_SIZE_MAX);
+ hci_packet_bytes_remaining_ = preamble_size_for_type[hci_packet_type_];
+ hci_packet_bytes_read_ = 0;
+ break;
+ }
+
+ case HCI_TYPE_READY: {
+ size_t bytes_read = TEMP_FAILURE_RETRY(
+ read(fd, hci_packet_.data() + hci_packet_bytes_read_,
+ hci_packet_bytes_remaining_));
+ CHECK(bytes_read > 0);
+ hci_packet_bytes_remaining_ -= bytes_read;
+ hci_packet_bytes_read_ += bytes_read;
+ if (hci_packet_bytes_remaining_ == 0) {
+ size_t packet_length =
+ HciGetPacketLengthForType(hci_packet_type_, hci_packet_);
+ hci_packet_.resize(preamble_size_for_type[hci_packet_type_] +
+ packet_length);
+ hci_packet_bytes_remaining_ = packet_length;
+ hci_parser_state_ = HCI_PAYLOAD;
+ hci_packet_bytes_read_ = 0;
+ }
+ break;
+ }
+
+ case HCI_PAYLOAD: {
+ size_t bytes_read = TEMP_FAILURE_RETRY(
+ read(fd,
+ hci_packet_.data() + preamble_size_for_type[hci_packet_type_] +
+ hci_packet_bytes_read_,
+ hci_packet_bytes_remaining_));
+ hci_packet_bytes_remaining_ -= bytes_read;
+ hci_packet_bytes_read_ += bytes_read;
+ if (hci_packet_bytes_remaining_ == 0) {
+ if (firmware_configured_) {
+ if (packet_read_cb_ != nullptr) {
+ packet_read_cb_(hci_packet_type_, hci_packet_);
+ }
+ } else {
+ if (internal_command_cb != nullptr) {
+ HC_BT_HDR* bt_hdr =
+ WrapPacketAndCopy(HCI_PACKET_TYPE_EVENT, hci_packet_);
+ internal_command_cb(bt_hdr);
+ }
+ }
+ hci_parser_state_ = HCI_IDLE;
+ }
+ break;
+ }
+ }
+}
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/1.0/default/vendor_interface.h b/bluetooth/1.0/default/vendor_interface.h
new file mode 100644
index 0000000..133c51b
--- /dev/null
+++ b/bluetooth/1.0/default/vendor_interface.h
@@ -0,0 +1,82 @@
+//
+// Copyright 2016 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+#pragma once
+
+#include <hidl/HidlSupport.h>
+
+#include "async_fd_watcher.h"
+#include "bt_vendor_lib.h"
+#include "hci_internals.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::hidl_vec;
+using PacketReadCallback = std::function<void(HciPacketType, const hidl_vec<uint8_t>&)>;
+
+class VendorInterface {
+ public:
+ static bool Initialize(PacketReadCallback packet_read_cb);
+ static void Shutdown();
+ static VendorInterface* get();
+
+ size_t Send(const uint8_t *data, size_t length);
+
+ void OnFirmwareConfigured(uint8_t result);
+
+ // Actually send the data.
+ size_t SendPrivate(const uint8_t *data, size_t length);
+
+ private:
+ VendorInterface() { queued_data_.resize(0); }
+ virtual ~VendorInterface() = default;
+
+ bool Open(PacketReadCallback packet_read_cb);
+ void Close();
+
+ void OnDataReady(int fd);
+
+ // Queue data from Send() until the interface is ready.
+ hidl_vec<uint8_t> queued_data_;
+
+ void *lib_handle_;
+ bt_vendor_interface_t *lib_interface_;
+ AsyncFdWatcher fd_watcher_;
+ int uart_fd_;
+ PacketReadCallback packet_read_cb_;
+ bool firmware_configured_;
+
+ enum HciParserState {
+ HCI_IDLE,
+ HCI_TYPE_READY,
+ HCI_PAYLOAD
+ };
+ HciParserState hci_parser_state_{HCI_IDLE};
+ HciPacketType hci_packet_type_{HCI_PACKET_TYPE_UNKNOWN};
+ hidl_vec<uint8_t> hci_packet_;
+ size_t hci_packet_bytes_remaining_;
+ size_t hci_packet_bytes_read_;
+};
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android