Bluetooth: Check for waiting HAL callbacks (00802c2a) · Commits · e / os / android_hardware_interfaces

bluetooth/1.0/default/hci_internals.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -42,3 +42,6 @@ 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;

		// Event codes (Volume 2, Part E, 7.7.14)
		const uint8_t HCI_COMMAND_COMPLETE_EVENT = 0x0E;

bluetooth/1.0/default/vendor_interface.cc

+30 −10

Original line number	Diff line number	Diff line
		@@ -40,6 +40,8 @@ using android::hardware::bluetooth::V1_0::implementation::VendorInterface;
		using android::hardware::hidl_vec;

		tINT_CMD_CBACK internal_command_cb;
		uint16_t internal_command_opcode;

		VendorInterface* g_vendor_interface = nullptr;

		const size_t preamble_size_for_type[] = {
		@@ -68,9 +70,27 @@ HC_BT_HDR* WrapPacketAndCopy(uint16_t event, const hidl_vec<uint8_t>& data) {
		return packet;
		}

		bool internal_command_event_match(const hidl_vec<uint8_t>& packet) {
		uint8_t event_code = packet[0];
		if (event_code != HCI_COMMAND_COMPLETE_EVENT) {
		ALOGE("%s: Unhandled event type %02X", __func__, event_code);
		return false;
		}

		size_t opcode_offset = HCI_EVENT_PREAMBLE_SIZE + 1; // Skip num packets.

		uint16_t opcode = packet[opcode_offset] \| (packet[opcode_offset + 1] << 8);

		ALOGV("%s internal_command_opcode = %04X opcode = %04x", __func__,
		internal_command_opcode, opcode);
		return opcode == internal_command_opcode;
		}

		uint8_t transmit_cb(uint16_t opcode, void* buffer, tINT_CMD_CBACK callback) {
		ALOGV("%s opcode: 0x%04x, ptr: %p", __func__, opcode, buffer);
		ALOGV("%s opcode: 0x%04x, ptr: %p, cb: %p", __func__, opcode, buffer,
		callback);
		internal_command_cb = callback;
		internal_command_opcode = opcode;
		uint8_t type = HCI_PACKET_TYPE_COMMAND;
		VendorInterface::get()->Send(&type, 1);
		HC_BT_HDR* bt_hdr = reinterpret_cast<HC_BT_HDR*>(buffer);
		@@ -281,7 +301,6 @@ size_t VendorInterface::Send(const uint8_t* data, size_t length) {

		void VendorInterface::OnFirmwareConfigured(uint8_t result) {
		ALOGD("%s result: %d", __func__, result);
		internal_command_cb = nullptr;

		if (firmware_startup_timer_ != nullptr) {
		delete firmware_startup_timer_;
		@@ -341,17 +360,18 @@ void VendorInterface::OnDataReady(int fd) {
		hci_packet_bytes_remaining_ -= bytes_read;
		hci_packet_bytes_read_ += bytes_read;
		if (hci_packet_bytes_remaining_ == 0) {
		if (internal_command_cb != nullptr) {
		if (internal_command_cb != nullptr &&
		hci_packet_type_ == HCI_PACKET_TYPE_EVENT &&
		internal_command_event_match(hci_packet_)) {
		HC_BT_HDR* bt_hdr =
		WrapPacketAndCopy(HCI_PACKET_TYPE_EVENT, hci_packet_);
		internal_command_cb(bt_hdr);
		} else if (packet_read_cb_ != nullptr &&
		initialize_complete_cb_ == nullptr) {
		packet_read_cb_(hci_packet_type_, hci_packet_);

		// The callbacks can send new commands, so don't zero after calling.
		tINT_CMD_CBACK saved_cb = internal_command_cb;
		internal_command_cb = nullptr;
		saved_cb(bt_hdr);
		} else {
		ALOGE(
		"%s HCI_PAYLOAD received without packet_read_cb or pending init.",
		__func__);
		packet_read_cb_(hci_packet_type_, hci_packet_);
		}
		hci_parser_state_ = HCI_IDLE;
		}

bluetooth/1.0/default/vendor_interface.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -49,7 +49,8 @@ class VendorInterface {
		private:
		virtual ~VendorInterface() = default;

		bool Open(InitializeCompleteCallback initialize_complete_cb, PacketReadCallback packet_read_cb);
		bool Open(InitializeCompleteCallback initialize_complete_cb,
		PacketReadCallback packet_read_cb);
		void Close();

		void OnDataReady(int fd);