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Your QBI loss carryover would be the amount on line 16 of your prior year form 8995 that reports your qualified business income (QBI) deduction. Your section 179 deduction would be found on line 13 of your prior year Form 4562, and it reports your unused equipment or vehicle expense election amount.

I'm not sure what you are referring to when you say "regular tax carryovers". Here is a list of the carryovers mentioned in TurboTax, and a reference to what forms you would find the carryover amount on in your prior year return. You would have to look on those forms and schedules in the previous year to find the unused losses which would be the carryover amount: