I need some help. I have very little brake pressure on my 1999 S70 T5. The pedal goes all the way to the floor. When I pump the brakes, I get a little bit of pedal, but not much. The little pedal I do have does not bleed down. Master cylinder?

The black brake dust is excessive. I understand there is a Volvo ceramic pad. Has anyone had any experience with brake dust with this pad? Other aftermarket pads?