Data file much size I can increase in any data file as per the available hard disk size.

FATAL : production-sql-server : ABEadobesqlpr1\lcstat db : lcstats - msg: data file space used 099%

Whenever I get such type of alert from Tivoli and I have to expand the data files.But you know multiple instance and multiple database with multiple data file and all are of restricted sizes. I want to make a query which gives the detail about  current usage of data files and log file in such a sense so that I can estimate how much size I can increase in any data file as per the available hard disk size.

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Thanks