The following SQL Scripts helps you to list out all the reports with associated Data-sources which are all deployed at Microsoft Reporting server(SSRS)

UseReportServer
SELECT
      Catalog.Name AS ReportName,
      Catalog.pathAS Report_Location,
      DataSource.Name AS DataSourceName
FROM
      [Catalog] INNERJOIN DataSource
            ON Catalog.ItemID = DataSource.ItemID
order byCatalog.path
Categories: SSRS