''Wassup, can a loc come up in your crib''?

I think, in the first mission of Franklin in the video-game GTA 5, Llamar says this to Franklin in front of a house:

Wassup, can a loc come up in your crib?

What does that mean? I just can't even guess it's meaning. For more context: Franklin responds with:

Man f*** you, I'll see you at work.

And here is the video

It's very limited currency "gangland slang" in California.

Loc = loco = crazy somehow morphed into being a generalised term for Hispanic members of certain street gangs (you can read all about it in that link; I can't be bothered). I think in context here it's the Latino equivalent of blood or homie as used by negro gang members (or plain dude, guy as used by more mainstream speakers).