The Prism54.org domain redirects here. The old website and drivers are archived at http://lekernel.net/prism54/.
p54 is a driver for Intersil's Prism54 chips series. It supports both older full-MAC devices (with new soft-MAC firmware) and newer soft-MAC devices. It is included in the Linux kernel.
FullMAC PCI / Cardbus devices used to be supported only by the prism54 wireless driver. After Intersil stopped selling these devices in preference for the newer more flexible SoftMAC devices a SoftMAC device driver was required and prism54 did not support them. The p54pci driver now exists and has been present in the kernel for a while. This driver supports both SoftMAC devices and FullMAC devices. The main difference between these devices was the amount of memory which could be used for the firmware. The SoftMAC devices support a smaller amount of memory. Because of this the SoftMAC firmware fits into FullMAC devices's memory. p54pci supports not only PCI / Cardbus but also USB and SPI. Since p54pci supports all devices prism54 supports you will have a conflict. I'm not quite sure how distributions are handling this conflict right now. prism54 was kept around due to claims users may experience issues when using the SoftMAC driver. Time has passed users have not reported issues. If you use prism54 and for whatever reason you cannot use p54pci please let us know! E-mail us at: firstname.lastname@example.org
Before you can use the hardware, you have to get the the right firmware.
- ISL3877, ISL3880, ISL3890 and ISL3886 (miniPCI)
ISL3886 + net2280 (USB, 1st generation with net2280 usb<->pci bridge)
- ISL3887 (USB, 2nd generation, native USB interface)
- ST-Ericsson' STLC4560 (SPI)
For a complete listing of supported products, see the device list.
There are several different firmwares for different hardware. You have to pick the right one, download, rename to the listed name and put it into the right place... Normally this should be /lib/firmware. However some distributions put firmware in a different place.
please pick the right one for your device from the lists:
NOTE: Not all firmwares revisions are compatible with every device out of there!
If you run into problems, first try an alternative firmware before requesting further assistance (Contact).
for 2.6.29 kernels and above:
for 2.6.28 kernels and older:
More firmwares for all devices, even unsupported ones, can be found in Maxi's prism54 firmwares archive.
Alternatively, firmware can be extracted from windows drivers with a tool called "fwextract3" available from http://lekernel.net/prism54/misc.html.
- Ad-Hoc, AP, mesh, monitor and station mode
- WMM/WME/802.11e (QoS)
- TPC and ERP
- Programmable LEDs
- Cryptographic accelerator for WEP, TKIP and CCMP
- Packet injection in monitor mode
- Power save management in station mode
- Supported band table (by radio chip):
depends on hw
depends on hw
not working yet
- Regulatory domain codes
- Firmware scanning
- DFS / Radar Detection
- NITRO Xtreme Multimedia (Hifn's LZS compression)
- Accelerator for Cisco's CKIP and CMIC
To enable p54, you must first enable mac80211:
Networking Support ---> Wireless ---> <M> Improved wireless configuration API <M> Generic IEEE 802.11 Networking Stack (mac80211)
You can then enable p54 in the kernel configuration under
Device Drivers ---> [*] Network device support ---> Wireless LAN ---> [*] Wireless LAN (IEEE 802.11) <M> Softmac Prism54 support <M> Prism54 USB support <M> Prism54 PCI support <M> Prism54 SPI (stlc45xx) support