What does the gain setting in gr-osmosdr soapy actually meen?

in configs i seen it just has a Gain value to set
and in other software there is pga tia lna
So is there a way to interpret it for ex gain 40 = what in pga tia lna?

Soo i figuerd out via some fiddling i can use PGA_Gain TIA_gain LNA_gain

now to figure out what the max setting in sdrconsole means lol guessin 0
SoapySDRUtil --probe=lime,soapy=0
gave a lot of answers