hikey: Add a HIDL HAL for Bluetooth
The hikey HCI tty driver needs FIONREAD to be called before every read.
Add an HciPacketizerHikey class to make sure that FIONREAD is called.
Test: Bluetooth starts/stops, VtsHalBluetoothV1_0TargetTest passes
Change-Id: I9e9260337108c93cae66b89e21c3561916f42f54
diff --git a/bluetooth/Android.bp b/bluetooth/Android.bp
new file mode 100644
index 0000000..aecdcb7
--- /dev/null
+++ b/bluetooth/Android.bp
@@ -0,0 +1,41 @@
+//
+// Copyright (C) 2017 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_binary {
+ name: "android.hardware.bluetooth@1.0-service.hikey",
+ proprietary: true,
+ relative_install_path: "hw",
+ srcs: [
+ "bluetooth_hci.cc",
+ "hci_packetizer_hikey.cc",
+ "service.cc",
+ ],
+ shared_libs: [
+ "android.hardware.bluetooth@1.0",
+ "libbase",
+ "libcutils",
+ "libhardware",
+ "libhwbinder",
+ "libhidlbase",
+ "libhidltransport",
+ "liblog",
+ "libutils",
+ ],
+ static_libs: [
+ "android.hardware.bluetooth-async",
+ "android.hardware.bluetooth-hci",
+ ],
+ init_rc: ["android.hardware.bluetooth@1.0-service.hikey.rc"],
+}
diff --git a/bluetooth/android.hardware.bluetooth@1.0-service.hikey.rc b/bluetooth/android.hardware.bluetooth@1.0-service.hikey.rc
new file mode 100644
index 0000000..6f31efd
--- /dev/null
+++ b/bluetooth/android.hardware.bluetooth@1.0-service.hikey.rc
@@ -0,0 +1,4 @@
+service bluetooth-1-0 /vendor/bin/hw/android.hardware.bluetooth@1.0-service.hikey
+ class hal
+ user bluetooth
+ group bluetooth
diff --git a/bluetooth/bluetooth_hci.cc b/bluetooth/bluetooth_hci.cc
new file mode 100644
index 0000000..6410765
--- /dev/null
+++ b/bluetooth/bluetooth_hci.cc
@@ -0,0 +1,152 @@
+//
+// 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.hikey"
+
+#include "bluetooth_hci.h"
+
+#include <utils/Log.h>
+
+#include <android-base/logging.h>
+
+#include "hci_internals.h"
+
+namespace {
+
+using android::hardware::bluetooth::V1_0::hikey::BluetoothHci;
+using android::hardware::hidl_vec;
+
+BluetoothHci* g_bluetooth_hci = nullptr;
+
+size_t write_safely(int fd, const uint8_t* data, size_t length) {
+ size_t transmitted_length = 0;
+ while (length > 0) {
+ ssize_t ret =
+ TEMP_FAILURE_RETRY(write(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;
+}
+
+} // namespace
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace hikey {
+
+Return<void> BluetoothHci::initialize(
+ const ::android::sp<IBluetoothHciCallbacks>& cb) {
+ ALOGI("BluetoothHci::initialize()");
+
+ CHECK(cb != nullptr);
+ event_cb_ = cb;
+
+ hci_tty_fd_ = open("/dev/hci_tty", O_RDWR);
+ if (hci_tty_fd_ < 0) {
+ ALOGE("%s: Can't open hci_tty", __func__);
+ event_cb_->initializationComplete(Status::INITIALIZATION_ERROR);
+ }
+
+ CHECK(g_bluetooth_hci == nullptr) << __func__ << " is not reentrant";
+ g_bluetooth_hci = this;
+
+ fd_watcher_.WatchFdForNonBlockingReads(
+ hci_tty_fd_, [this](int fd) { hci_packetizer_.OnDataReadyHikey(fd); });
+
+ event_cb_->initializationComplete(Status::SUCCESS);
+ return Void();
+}
+
+Return<void> BluetoothHci::close() {
+ ALOGW("BluetoothHci::close()");
+ ::close(hci_tty_fd_);
+ hci_tty_fd_ = -1;
+ g_bluetooth_hci = nullptr;
+ return Void();
+}
+
+Return<void> BluetoothHci::sendHciCommand(const hidl_vec<uint8_t>& packet) {
+ uint8_t type = HCI_PACKET_TYPE_COMMAND;
+ int rv = write_safely(hci_tty_fd_, &type, sizeof(type));
+ if (rv == sizeof(type))
+ rv = write_safely(hci_tty_fd_, packet.data(), packet.size());
+ return Void();
+}
+
+Return<void> BluetoothHci::sendAclData(const hidl_vec<uint8_t>& packet) {
+ uint8_t type = HCI_PACKET_TYPE_ACL_DATA;
+ int rv = write_safely(hci_tty_fd_, &type, sizeof(type));
+ if (rv == sizeof(type))
+ rv = write_safely(hci_tty_fd_, packet.data(), packet.size());
+ return Void();
+}
+
+Return<void> BluetoothHci::sendScoData(const hidl_vec<uint8_t>& packet) {
+ uint8_t type = HCI_PACKET_TYPE_SCO_DATA;
+ int rv = write_safely(hci_tty_fd_, &type, sizeof(type));
+ if (rv == sizeof(type))
+ rv = write_safely(hci_tty_fd_, packet.data(), packet.size());
+ return Void();
+}
+
+BluetoothHci* BluetoothHci::get() { return g_bluetooth_hci; }
+
+void BluetoothHci::OnPacketReady() {
+ BluetoothHci::get()->HandleIncomingPacket();
+}
+
+void BluetoothHci::HandleIncomingPacket() {
+ HciPacketType hci_packet_type = hci_packetizer_.GetPacketType();
+ hidl_vec<uint8_t> hci_packet = hci_packetizer_.GetPacket();
+
+ switch (hci_packet_type) {
+ case HCI_PACKET_TYPE_EVENT:
+ event_cb_->hciEventReceived(hci_packet);
+ break;
+ case HCI_PACKET_TYPE_ACL_DATA:
+ event_cb_->aclDataReceived(hci_packet);
+ break;
+ case HCI_PACKET_TYPE_SCO_DATA:
+ event_cb_->scoDataReceived(hci_packet);
+ break;
+ default: {
+ bool hci_packet_type_corrupted = true;
+ CHECK(hci_packet_type_corrupted == false);
+ }
+ }
+}
+
+} // namespace hikey
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/bluetooth_hci.h b/bluetooth/bluetooth_hci.h
new file mode 100644
index 0000000..91fad27
--- /dev/null
+++ b/bluetooth/bluetooth_hci.h
@@ -0,0 +1,63 @@
+//
+// Copyright 2017 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 <android/hardware/bluetooth/1.0/IBluetoothHci.h>
+
+#include <hidl/MQDescriptor.h>
+
+#include "async_fd_watcher.h"
+#include "hci_packetizer_hikey.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace hikey {
+
+using ::android::hardware::Return;
+using ::android::hardware::hidl_vec;
+
+class BluetoothHci : public IBluetoothHci {
+ public:
+ Return<void> 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>& packet) override;
+ Return<void> sendScoData(const hidl_vec<uint8_t>& packet) override;
+ Return<void> close() override;
+
+ static void OnPacketReady();
+
+ static BluetoothHci* get();
+
+ private:
+ ::android::sp<IBluetoothHciCallbacks> event_cb_;
+ int hci_tty_fd_;
+
+ void HandleIncomingPacket();
+
+ async::AsyncFdWatcher fd_watcher_;
+
+ HciPacketizerHikey hci_packetizer_{BluetoothHci::OnPacketReady};
+};
+
+} // namespace hikey
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/hci_packetizer_hikey.cc b/bluetooth/hci_packetizer_hikey.cc
new file mode 100644
index 0000000..9b54b8e
--- /dev/null
+++ b/bluetooth/hci_packetizer_hikey.cc
@@ -0,0 +1,121 @@
+//
+// Copyright 2017 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 "hci_packetizer_hikey.h"
+
+#include <sys/ioctl.h>
+#include <utils/Log.h>
+
+#include <android-base/logging.h>
+
+namespace {
+
+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 uint8_t* preamble) {
+ size_t offset = packet_length_offset_for_type[type];
+ if (type != HCI_PACKET_TYPE_ACL_DATA) return preamble[offset];
+ return (((preamble[offset + 1]) << 8) | preamble[offset]);
+}
+
+} // namespace
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace hikey {
+
+void HciPacketizerHikey::OnDataReadyHikey(int fd) {
+ int tty_bytes = 0;
+ if (ioctl(fd, FIONREAD, &tty_bytes) == -1)
+ ALOGE("%s:FIONREAD %s", __func__, strerror(errno));
+ ALOGV("%s:tty_bytes = %d", __func__, tty_bytes);
+ uint8_t* tmp_buffer = new uint8_t[tty_bytes];
+ size_t bytes_read = TEMP_FAILURE_RETRY(read(fd, tmp_buffer, tty_bytes));
+ CHECK(static_cast<int>(bytes_read) == tty_bytes);
+
+ size_t index = 0;
+ while (index < bytes_read - 1) {
+ switch (hci_parser_state_) {
+ case HCI_IDLE: {
+ hci_packet_type_ = static_cast<HciPacketType>(tmp_buffer[index++]);
+ CHECK(hci_packet_type_ >= HCI_PACKET_TYPE_ACL_DATA &&
+ hci_packet_type_ <= HCI_PACKET_TYPE_EVENT)
+ << "hci_packet_type_ = "
+ << static_cast<unsigned int>(hci_packet_type_);
+ hci_parser_state_ = HCI_TYPE_READY;
+ hci_packet_bytes_remaining_ = preamble_size_for_type[hci_packet_type_];
+ hci_packet_bytes_read_ = 0;
+ break;
+ }
+
+ case HCI_TYPE_READY: {
+ size_t bytes_to_copy = (bytes_read - index < hci_packet_bytes_remaining_
+ ? bytes_read - index
+ : hci_packet_bytes_remaining_);
+ memcpy(hci_packet_preamble_ + hci_packet_bytes_read_,
+ &tmp_buffer[index], bytes_to_copy);
+ hci_packet_bytes_remaining_ -= bytes_to_copy;
+ hci_packet_bytes_read_ += bytes_to_copy;
+ index += bytes_to_copy;
+ ALOGV("%s:TYPE index = %d", __func__, static_cast<int>(index));
+ if (hci_packet_bytes_remaining_ == 0) {
+ size_t packet_length =
+ HciGetPacketLengthForType(hci_packet_type_, hci_packet_preamble_);
+ hci_packet_.resize(preamble_size_for_type[hci_packet_type_] +
+ packet_length);
+ memcpy(hci_packet_.data(), hci_packet_preamble_,
+ preamble_size_for_type[hci_packet_type_]);
+ hci_packet_bytes_remaining_ = packet_length;
+ hci_parser_state_ = HCI_PAYLOAD;
+ hci_packet_bytes_read_ = 0;
+ }
+ break;
+ }
+
+ case HCI_PAYLOAD: {
+ size_t bytes_to_copy = (bytes_read - index < hci_packet_bytes_remaining_
+ ? bytes_read - index
+ : hci_packet_bytes_remaining_);
+ memcpy(hci_packet_.data() + preamble_size_for_type[hci_packet_type_] +
+ hci_packet_bytes_read_,
+ &tmp_buffer[index], bytes_to_copy);
+ hci_packet_bytes_remaining_ -= bytes_to_copy;
+ hci_packet_bytes_read_ += bytes_to_copy;
+ index += bytes_to_copy;
+ ALOGV("%s:PAYLOAD index = %d", __func__, static_cast<int>(index));
+ if (hci_packet_bytes_remaining_ == 0) {
+ hci_packet_ready_cb_();
+ hci_parser_state_ = HCI_IDLE;
+ }
+ break;
+ }
+ }
+ }
+ delete[] tmp_buffer;
+}
+
+} // namespace hikey
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/hci_packetizer_hikey.h b/bluetooth/hci_packetizer_hikey.h
new file mode 100644
index 0000000..12fdde2
--- /dev/null
+++ b/bluetooth/hci_packetizer_hikey.h
@@ -0,0 +1,38 @@
+//
+// Copyright 2017 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 "hci_packetizer.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace V1_0 {
+namespace hikey {
+
+class HciPacketizerHikey : public hci::HciPacketizer {
+ public:
+ HciPacketizerHikey(hci::HciPacketReadyCallback packet_cb)
+ : HciPacketizer(packet_cb){};
+ void OnDataReadyHikey(int fd);
+};
+
+} // namespace hikey
+} // namespace V1_0
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
diff --git a/bluetooth/service.cc b/bluetooth/service.cc
new file mode 100644
index 0000000..5c59154
--- /dev/null
+++ b/bluetooth/service.cc
@@ -0,0 +1,36 @@
+//
+// Copyright 2017 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.hikey"
+
+#include <android/hardware/bluetooth/1.0/IBluetoothHci.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "bluetooth_hci.h"
+
+using ::android::hardware::configureRpcThreadpool;
+using ::android::hardware::bluetooth::V1_0::IBluetoothHci;
+using ::android::hardware::bluetooth::V1_0::hikey::BluetoothHci;
+using ::android::hardware::joinRpcThreadpool;
+using ::android::sp;
+
+int main(int /* argc */, char** /* argv */) {
+ sp<IBluetoothHci> bluetooth = new BluetoothHci;
+ configureRpcThreadpool(1, true);
+ bluetooth->registerAsService();
+ joinRpcThreadpool();
+}