wifi: Add implementation of driver/firmware memory dumps

am: cdb77f3cf2

Change-Id: I11fb9cc47f84a49b4a836da28266089f9971768c

wifi/1.0/default/wifi_chip.cpp

@@ -97,12 +97,46 @@ Return<void> WifiChip::requestChipDebugInfo() {
 }
 
 Return<void> WifiChip::requestDriverDebugDump() {
-  // TODO implement
+  if (!legacy_hal_.lock())
+    return Void();
+
+  std::pair<wifi_error, std::vector<char>> ret =
+      legacy_hal_.lock()->requestWlanDriverMemoryDump();
+  if (ret.first != WIFI_SUCCESS) {
+    LOG(ERROR) << "Failed to get driver debug dump: "
+               << LegacyErrorToString(ret.first);
+    return Void();
+  }
+
+  auto& driver_dump = ret.second;
+  hidl_vec<uint8_t> hidl_data;
+  hidl_data.setToExternal(reinterpret_cast<uint8_t*>(driver_dump.data()),
+                          driver_dump.size());
+  for (const auto& callback : callbacks_) {
+    callback->onDriverDebugDumpAvailable(hidl_data);
+  }
   return Void();
 }
 
 Return<void> WifiChip::requestFirmwareDebugDump() {
-  // TODO implement
+  if (!legacy_hal_.lock())
+    return Void();
+
+  std::pair<wifi_error, std::vector<char>> ret =
+      legacy_hal_.lock()->requestWlanFirmwareMemoryDump();
+  if (ret.first != WIFI_SUCCESS) {
+    LOG(ERROR) << "Failed to get firmware debug dump: "
+               << LegacyErrorToString(ret.first);
+    return Void();
+  }
+
+  auto& firmware_dump = ret.second;
+  hidl_vec<uint8_t> hidl_data;
+  hidl_data.setToExternal(reinterpret_cast<uint8_t*>(firmware_dump.data()),
+                          firmware_dump.size());
+  for (const auto& callback : callbacks_) {
+    callback->onFirmwareDebugDumpAvailable(hidl_data);
+  }
   return Void();
 }
 

wifi/1.0/default/wifi_legacy_hal.cpp

@@ -41,6 +41,22 @@ void onStopComplete(wifi_handle handle) {
     on_stop_complete_internal_callback(handle);
   }
 }
+
+// Callback to be invoked for driver dump.
+std::function<void(char*, int)> on_driver_memory_dump_internal_callback;
+void onDriverMemoryDump(char* buffer, int buffer_size) {
+  if (on_driver_memory_dump_internal_callback) {
+    on_driver_memory_dump_internal_callback(buffer, buffer_size);
+  }
+}
+
+// Callback to be invoked for firmware dump.
+std::function<void(char*, int)> on_firmware_memory_dump_internal_callback;
+void onFirmwareMemoryDump(char* buffer, int buffer_size) {
+  if (on_firmware_memory_dump_internal_callback) {
+    on_firmware_memory_dump_internal_callback(buffer, buffer_size);
+  }
+}
 }
 
 namespace android {
@@ -120,6 +136,32 @@ std::pair<wifi_error, std::string> WifiLegacyHal::getWlanFirmwareVersion() {
   return std::make_pair(status, buffer.data());
 }
 
+std::pair<wifi_error, std::vector<char>>
+WifiLegacyHal::requestWlanDriverMemoryDump() {
+  std::vector<char> driver_dump;
+  on_driver_memory_dump_internal_callback = [&driver_dump](char* buffer,
+                                                           int buffer_size) {
+    driver_dump.insert(driver_dump.end(), buffer, buffer + buffer_size);
+  };
+  wifi_error status = global_func_table_.wifi_get_driver_memory_dump(
+      wlan_interface_handle_, {onDriverMemoryDump});
+  on_driver_memory_dump_internal_callback = nullptr;
+  return std::make_pair(status, std::move(driver_dump));
+}
+
+std::pair<wifi_error, std::vector<char>>
+WifiLegacyHal::requestWlanFirmwareMemoryDump() {
+  std::vector<char> firmware_dump;
+  on_firmware_memory_dump_internal_callback = [&firmware_dump](
+      char* buffer, int buffer_size) {
+    firmware_dump.insert(firmware_dump.end(), buffer, buffer + buffer_size);
+  };
+  wifi_error status = global_func_table_.wifi_get_firmware_memory_dump(
+      wlan_interface_handle_, {onFirmwareMemoryDump});
+  on_firmware_memory_dump_internal_callback = nullptr;
+  return std::make_pair(status, std::move(firmware_dump));
+}
+
 wifi_error WifiLegacyHal::retrieveWlanInterfaceHandle() {
   const std::string& ifname_to_find = getWlanInterfaceName();
 

wifi/1.0/default/wifi_legacy_hal.h

@@ -42,6 +42,8 @@ class WifiLegacyHal {
   // Wrappers for all the functions in the legacy HAL function table.
   std::pair<wifi_error, std::string> getWlanDriverVersion();
   std::pair<wifi_error, std::string> getWlanFirmwareVersion();
+  std::pair<wifi_error, std::vector<char>> requestWlanDriverMemoryDump();
+  std::pair<wifi_error, std::vector<char>> requestWlanFirmwareMemoryDump();
 
  private:
   static const uint32_t kMaxVersionStringLength;