But BCM4313 is not recognized by b43, and it's not ssb based; so there's no need to blacklist those drivers.
From kernel >=2.6.38.x you can install it's FOSS version with brcm80211, by selecting it on staging drivers, if you'll compile your own kernel. The only extra thing that you'll have to do is to download the firmware, which is available at the kernel-git-repository - http://git.kernel.org/?p=linux/kerne...x-firmware.git
- because it's a propetary firmware, and cannot be bundled on the kernel-source tree. At this site - http://linuxwireless.org/en/users/Drivers/brcm80211
- there's all one needs to know about this driver.