linux/drivers/staging/brcm80211
Linus Torvalds 7a6362800c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits)
  bonding: enable netpoll without checking link status
  xfrm: Refcount destination entry on xfrm_lookup
  net: introduce rx_handler results and logic around that
  bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag
  bonding: wrap slave state work
  net: get rid of multiple bond-related netdevice->priv_flags
  bonding: register slave pointer for rx_handler
  be2net: Bump up the version number
  be2net: Copyright notice change. Update to Emulex instead of ServerEngines
  e1000e: fix kconfig for crc32 dependency
  netfilter ebtables: fix xt_AUDIT to work with ebtables
  xen network backend driver
  bonding: Improve syslog message at device creation time
  bonding: Call netif_carrier_off after register_netdevice
  bonding: Incorrect TX queue offset
  net_sched: fix ip_tos2prio
  xfrm: fix __xfrm_route_forward()
  be2net: Fix UDP packet detected status in RX compl
  Phonet: fix aligned-mode pipe socket buffer header reserve
  netxen: support for GbE port settings
  ...

Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c
with the staging updates.
2011-03-16 16:29:25 -07:00
..
brcmfmac Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-03-16 16:29:25 -07:00
brcmsmac Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-03-16 16:29:25 -07:00
include staging: brcm80211: lower number of wlc_bsscfg.h includes 2011-03-14 11:45:16 -07:00
util staging: brcm80211: Remove NULL check before kfree 2011-03-14 11:57:31 -07:00
Kconfig staging: brcm80211: allow both driver are created in single build 2011-02-04 13:29:10 -08:00
Makefile staging: brcm80211: allow both driver are created in single build 2011-02-04 13:29:10 -08:00
README staging: brcm80211: fix documentation on installing firmware 2010-12-08 14:28:51 -08:00
TODO staging: brcm80211: updated maintainers contact information 2010-11-29 10:53:14 -08:00

Broadcom Mac80211 driver

This is a driver in progress.  It has features still to be implemented well as
bugs in current code.


What's here and not here
=======================
- Completely open source host driver, no binary object files
- Features Broadcom's OneDriver architecture (single source base for
  supported chips and architectures)
- On-chip firmware loaded using standard request_firmware()
- Support for BCM43224, BCM43225, BCM4313 (PCIe NIC)
- Framework for supporting new chips, including mac80211-aware embedded chips
- Does not support older PCI/PCIe chips with SSB backplane
- Driver includes BMAC interface for transparent dongle support
- Uses minstrel_ht rate algorithm
- HW based encryption not enabled yet


What's done
==========
- Integration with mac80211 stack
- A-MPDU single & dual stream rates
- BCM43224:	Dualband, Dual stream, 20MHz channels
	Throughput (in chamber): ~85-90 Mbits/sec (in both 2.4 & 5 GHz bands)
- BCM43225:	2.4 GHz, Dual Stream, 20MHz channels
	Throughput (in chamber): ~85-90 Mbits/sec
- BCM4313:		2.4 GHz, Single Stream
	Throughput (in chamber): ~40 Mbits/sec


Things To Be Done
=================
See the TODO file


Firmware installation
======================
Firmware is available from the Linux firmware repository at:

	git://git.kernel.org/pub/scm/linux/kernel/git/dwmw2/linux-firmware.git
	http://git.kernel.org/?p=linux/kernel/git/dwmw2/linux-firmware.git
	https://git.kernel.org/?p=linux/kernel/git/dwmw2/linux-firmware.git

For all chips, copy brcm/bcm43xx-0.fw and brcm/bcm43xx_hdr-0.fw to
/lib/firmware/brcm (or wherever firmware is normally installed on your system).

Currently supported chips
==============
PCI
Name		Device ID
BCM4313		0x4727
BCM43224	0x4353
BCM43225	0x4357


Bugs/Problems
==============
- Driver can get confused while scanning during high throughput, can cause
  burping, hanging, and possible crashing.
- Occasional hangs & burps with BCM43224 on 2.4 GHz with dual stream rates.
- Occasional crashes with BCM43224 on multicore machines.


Note on Regulatory Implementation
================================
This generation of chips contain additional regulatory support independent of
the driver. The devices use a single worldwide regulatory domain, with channels
12-14 (2.4 GHz band) and channels 52-64 and 100-140 (5 GHz band) restricted to
passive operation. Transmission on those channels is suppressed until
appropriate other traffic is observed on those channels.

Within the driver, we use the ficticious country code "X2" to represent this
worldwide regulatory domain. There is currently no interface to configure a
different domain.

The driver reads the SROM country code from the chip and hands it up to
mac80211 as the regulatory hint, however this information is otherwise unused
with the driver.


Contact Info:
=============
Brett Rudley		brudley@broadcom.com
Henry Ptasinski		henryp@broadcom.com
Dowan Kim			dowan@broadcom.com
Roland Vossen		rvossen@broadcom.com
Arend van Spriel	arend@broadcom.com