svn commit: r236005 - stable/9/share/man/man4

Fri May 25 16:09:07 UTC 2012

Author: bschmidt
Date: Fri May 25 16:09:06 2012
New Revision: 236005
URL: http://svn.freebsd.org/changeset/base/236005

Log:
  MFC r235235-235237:
  Update man page due to import of RT2800/RT3000 support.

Modified:
  stable/9/share/man/man4/ral.4
Directory Properties:
  stable/9/share/man/man4/   (props changed)

Modified: stable/9/share/man/man4/ral.4
==============================================================================

--- stable/9/share/man/man4/ral.4	Fri May 25 16:07:39 2012	(r236004)
+++ stable/9/share/man/man4/ral.4	Fri May 25 16:09:06 2012	(r236005)
@@ -1,5 +1,4 @@
-.\" Copyright (c) 2005, 2006
-.\"     Damien Bergamini <damien.bergamini at free.fr>
+.\" Copyright (c) 2005-2010 Damien Bergamini <damien.bergamini at free.fr>
 .\"
 .\" Permission to use, copy, modify, and distribute this software for any
 .\" purpose with or without fee is hereby granted, provided that the above
@@ -15,12 +14,12 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 8, 2009
+.Dd May 10, 2012
 .Dt RAL 4
 .Os
 .Sh NAME
 .Nm ral
-.Nd "Ralink Technology IEEE 802.11 wireless network driver"
+.Nd "Ralink Technology IEEE 802.11a/g/n wireless network device"
 .Sh SYNOPSIS
 To compile this driver into the kernel,
 place the following lines in your
@@ -42,31 +41,43 @@ if_ral_load="YES"
 .Sh DESCRIPTION
 The
 .Nm
-driver supports PCI/CardBus wireless adapters based on the Ralink Technology
-RT2500, RT2501, and RT2600 chipsets.
+driver supports PCI/PCIe/CardBus wireless adapters based on the Ralink RT2500,
+RT2501, RT2600, RT2700, RT2800 and RT3090 chipsets.
 .Pp
 The RT2500 chipset is the first generation of 802.11b/g adapters from Ralink.
-It consists of two integrated chips, a RT2560 MAC/BBP and a RT2525 radio
+It consists of two integrated chips, an RT2560 MAC/BBP and an RT2525 radio
 transceiver.
 .Pp
-The RT2501 chipset is the second generation of 802.11b/g adapters from Ralink.
-It consists of two integrated chips, a RT2561 MAC/BBP and a RT2527 radio
+The RT2501 chipset is the second generation of 802.11a/b/g adapters from
+Ralink.
+It consists of two integrated chips, an RT2561 MAC/BBP and an RT2527 radio
 transceiver.
 This chipset provides support for the IEEE 802.11e standard with multiple
 hardware transmission queues and allows scatter/gather for efficient DMA
 operations.
 .Pp
-The RT2600 chipset consists of two integrated chips, a RT2661 MAC/BBP and a
+The RT2600 chipset consists of two integrated chips, an RT2661 MAC/BBP and an
 RT2529 radio transceiver.
 This chipset uses the MIMO (multiple-input multiple-output) technology with
-multiple antennas to extend the operating range of the adapter and to achieve
-higher throughput.
-MIMO is the basis of the forthcoming IEEE 802.11n standard.
-.Pp
-The transmit speed is user-selectable or can be adapted automatically by the
-driver depending on the received signal strength and on the number of hardware
-transmission retries.
+multiple radio transceivers to extend the operating range of the adapter and
+to achieve higher throughput.
+However, the RT2600 chipset does not support any of the 802.11n features.
+.Pp
+The RT2700 chipset is a low-cost version of the RT2800 chipset.
+It supports a single transmit path and two receiver paths (1T2R).
+It consists of two integrated chips, an RT2760 or RT2790 (PCIe) MAC/BBP and
+an RT2720 (2.4GHz) or RT2750 (2.4GHz/5GHz) radio transceiver.
+.Pp
+The RT2800 chipset is the first generation of 802.11n adapters from Ralink.
+It consists of two integrated chips, an RT2860 or RT2890 (PCIe) MAC/BBP and
+an RT2820 (2.4GHz) or RT2850 (2.4GHz/5GHz) radio transceiver.
+The RT2800 chipset supports two transmit paths and up to three receiver
+paths (2T2R/2T3R).
+It can achieve speeds up to 144Mbps (20MHz bandwidth) and 300Mbps (40MHz
+bandwidth.)
 .Pp
+The RT3090 chipset is the first generation of single-chip 802.11n adapters
+from Ralink.
 .Nm
 supports
 .Cm station ,
@@ -92,13 +103,16 @@ Multiple
 interfaces may be operated together with a
 .Cm hostap
 interface to construct a wireless repeater device.
+.Pp
+The transmit speed is user-selectable or can be adapted automatically by the
+driver depending on the number of hardware transmission retries.
 For more information on configuring this device, see
 .Xr ifconfig 8 .
 .Sh HARDWARE
 The
 .Nm
-driver supports PCI/CardBus wireless adapters based on the Ralink Technology
-RT2500, RT2501, and RT2600 chipsets, including:
+driver supports PCI/PCIe/CardBus wireless adapters based on Ralink Technology
+chipsets, including:
 .Pp
 .Bl -column -compact ".Li Atlantis Land A02-PCM-W54" "RT2561S" "CardBus"
 .It Em Card Ta Em MAC/BBP Ta Em Bus
@@ -188,9 +202,6 @@ RT2500, RT2501, and RT2600 chipsets, inc
 .It "Zonet ZEW1500" Ta RT2560 Ta CardBus
 .It "Zonet ZEW1600" Ta RT2560 Ta PCI
 .El
-.Pp
-An up to date list can be found at
-.Pa http://damien.bergamini.free.fr/ral/list.html .
 .Sh EXAMPLES
 Join an existing BSS network (i.e., connect to an access point):
 .Pp
@@ -238,7 +249,7 @@ This should not happen.
 .Xr wlan_xauth 4 ,
 .Xr hostapd 8 ,
 .Xr ifconfig 8 ,
-.Xr wpa_supplicant 8 .
+.Xr wpa_supplicant 8
 .Rs
 .%T "Ralink Technology"
 .%U http://www.ralinktech.com/
@@ -248,12 +259,37 @@ The
 .Nm
 driver first appeared in
 .Ox 3.7 .
+Support for the RT2501 and RT2600 chipsets was added in
+.Ox 3.9 .
+Support for the RT2800 chipset was added in
+.Ox 4.3 .
+Support for the RT2700 chipset was added in
+.Ox 4.4 .
+Support for the RT3090 chipset was added in
+.Ox 4.9 .
 .Sh AUTHORS
 The original
 .Nm
 driver was written by
-.An Damien Bergamini Aq damien at FreeBSD.org .
-.Sh BUGS
-Host AP mode doesn't support client power save.
-Clients using power save mode will experience
+.An Damien Bergamini Aq damien at openbsd.org .
+.Sh CAVEATS
+The
+.Nm
+driver does not make use of the hardware cryptographic engine.
+.Pp
+The
+.Nm
+driver does not support any of the 802.11n capabilities offered by
+the RT2700 and RT2800 chipsets.
+Additional work is required in before those features can be supported.
+.Pp
+Host AP mode doesn't support power saving.
+Clients attempting to use power saving mode may experience significant
 packet loss (disabling power saving on the client will fix this).
+.Pp
+Some PCI
+.Nm
+adapters seem to strictly require a system supporting PCI 2.2 or greater and
+will likely not work in systems based on older revisions of the PCI
+specification.
+Check the board's PCI version before purchasing the card.
