From my perspective, an iFrame serves as a reference to a webpage or HTML content. While unsure, I believe that accessing components (or parameters) from an SSRS report may require the use of the SSRS plug-in. However, it's been some time since I last experimented with this.
Another option would be to include a direct link in the report itself, redirecting users to the report browser while preserving all current parameters. To achieve this, you could create a textbox displaying text like "Click here" and assign it an action to "Go to URL".
The URL construction would look something like this:
="javascript:void(window.open(' & Globals!ReportServerUrl & "/Pages/ReportViewer.aspx?" & Globals!ReportFolder & Globals!ReportName & "&Param1=" & Parameters!Param1.Value & "&Param2=" & Parameters!Param2.value & "&Param3=" & Parameters!Param3.value & "'))"
It's worth noting that various other controls can be added to the link to hide the parameter bar, enforce specific rendering formats, and more. Additional information on this can be found here.
While this response may not align precisely with your query, I wanted to offer some insights given the lack of previous replies.