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RADEON(4)							     RADEON(4)

NAME
       radeon - ATI/AMD RADEON video driver

SYNOPSIS
       Section "Device"
	 Identifier "devname"
	 Driver "radeon"
	 ...
       EndSection

DESCRIPTION
       radeon  is an Xorg driver for ATI/AMD RADEON-based video cards with the
       following features:

       · Full support for 8-, 15-, 16- and 24-bit pixel depths;
       · RandR 1.2 and RandR 1.3 support;
       · Full EXA 2D acceleration;
       · Textured XVideo acceleration including anti-tearing support  (Bicubic
	 filtering   only  available  on  R/RV3xx,  R/RV/RS4xx,	 R/RV5xx,  and
	 RS6xx/RS740);
       · 3D acceleration;

SUPPORTED HARDWARE
       The radeon driver supports PCI, AGP, and PCIe video cards based on  the
       following ATI/AMD chips (note: list is non-exhaustive):

       R100	   Radeon 7200
       RV100	   Radeon 7000(VE), M6, RN50/ES1000
       RS100	   Radeon IGP320(M)
       RV200	   Radeon 7500, M7, FireGL 7800
       RS200	   Radeon IGP330(M)/IGP340(M)
       RS250	   Radeon Mobility 7000 IGP
       R200	   Radeon 8500, 9100, FireGL 8800/8700
       RV250	   Radeon 9000PRO/9000, M9
       RV280	   Radeon 9200PRO/9200/9200SE/9250, M9+
       RS300	   Radeon 9100 IGP
       RS350	   Radeon 9200 IGP
       RS400/RS480 Radeon XPRESS 200(M)/1100 IGP
       R300	   Radeon 9700PRO/9700/9500PRO/9500/9600TX, FireGL X1/Z1
       R350	   Radeon 9800PRO/9800SE/9800, FireGL X2
       R360	   Radeon 9800XT
       RV350	   Radeon 9600PRO/9600SE/9600/9550, M10/M11, FireGL T2
       RV360	   Radeon 9600XT
       RV370	   Radeon X300, M22
       RV380	   Radeon X600, M24
       RV410	   Radeon X700, M26 PCIe
       R420	   Radeon X800 AGP
       R423/R430   Radeon X800, M28 PCIe
       R480/R481   Radeon X850 PCIe/AGP
       RV505/RV515/RV516/RV550
		   Radeon X1300/X1400/X1500/X1550/X2300
       R520	   Radeon X1800
       RV530/RV560 Radeon X1600/X1650/X1700
       RV570/R580  Radeon X1900/X1950
       RS600/RS690/RS740
		   Radeon X1200/X1250/X2100
       R600	   Radeon HD 2900
       RV610/RV630 Radeon HD 2400/2600/2700/4200/4225/4250
       RV620/RV635 Radeon HD 3410/3430/3450/3470/3650/3670
       RV670	   Radeon HD 3690/3850/3870
       RS780/RS880 Radeon HD 3100/3200/3300/4100/4200/4250/4290
       RV710/RV730 Radeon						    HD
		   4330/4350/4550/4650/4670/5145/5165/530v/545v/560v/565v
       RV740/RV770/RV790
		   Radeon HD 4770/4730/4830/4850/4860/4870/4890
       CEDAR	   Radeon HD 5430/5450/6330/6350/6370
       REDWOOD	   Radeon HD 5550/5570/5650/5670/5730/5750/5770/6530/6550/6570
       JUNIPER	   Radeon HD 5750/5770/5830/5850/5870/6750/6770/6830/6850/6870
       CYPRESS	   Radeon HD 5830/5850/5870
       HEMLOCK	   Radeon HD 5970
       PALM	   Radeon HD 6310/6250
       SUMO/SUMO2  Radeon HD 6370/6380/6410/6480/6520/6530/6550/6620
       BARTS	   Radeon HD 6790/6850/6870/6950/6970/6990
       TURKS	   Radeon HD 6570/6630/6650/6670/6730/6750/6770
       CAICOS	   Radeon HD 6430/6450/6470/6490
       CAYMAN	   Radeon HD 6950/6970/6990
       ARUBA	   Radeon HD 7000 series
       TAHITI	   Radeon HD 7900 series
       PITCAIRN	   Radeon HD 7800 series
       VERDE	   Radeon HD 7700 series
       OLAND	   Radeon HD 8000 series
       HAINAN	   Radeon HD 8000 series
       BONAIRE	   Radeon HD 7790 series
       KAVERI	   KAVERI APUs
       KABINI	   KABINI APUs
       HAWAII	   Radeon R9 series
       MULLINS	   MULLINS APUs

CONFIGURATION DETAILS
       Please refer to xorg.conf(5) for general configuration  details.	  This
       section only covers configuration details specific to this driver.

       The following driver Options are supported:

       Option "SWcursor" "boolean"
	      Selects software cursor.	The default is off.

       Option "Accel" "boolean"
	      Enables or disables all hardware acceleration.
	      The default is on.

       Option "ZaphodHeads" "string"
	      Specify  the  RandR output(s) to use with zaphod mode for a par‐
	      ticular driver instance.	If you use this option	you  must  use
	      this option for all instances of the driver.
	      For  example:  Option  "ZaphodHeads"  "LVDS,VGA-0"  will	assign
	      xrandr outputs LVDS and VGA-0 to this instance of the driver.

       Option "ColorTiling" "boolean"
	      The framebuffer can be addressed either in linear or tiled mode.
	      Tiled  mode can provide significant performance benefits with 3D
	      applications.  Tiling will be disabled if the drm module is  too
	      old or if the current display configuration does not support it.
	      On R600+ this enables 1D tiling mode.
	      The default value is on for R/RV3XX,  R/RV4XX,  R/RV5XX,	RS6XX,
	      RS740, R/RV6XX, R/RV7XX, RS780, RS880, EVERGREEN, CAYMAN, ARUBA,
	      Southern Islands,	 and  Sea  Islands  and	 off  for  R/RV/RS1XX,
	      R/RV/RS2XX, RS3XX, and RS690/RS780/RS880 when fast fb feature is
	      enabled.

       Option "ColorTiling2D" "boolean"
	      The framebuffer can be addressed either in  linear,  1D,	or  2D
	      tiled  modes.  2D tiled mode can provide significant performance
	      benefits over 1D tiling with 3D applications.   Tiling  will  be
	      disabled	if the drm module is too old or if the current display
	      configuration does not support it.  KMS  ColorTiling2D  is  only
	      supported on R600 and newer chips and requires Mesa 9.0 or newer
	      for R6xx-ARUBA, Mesa 9.2 or newer for Southern Islands, and Mesa
	      10.1 or newer for Sea Islands.
	      The  default  value  is  on  for R/RV6XX, R/RV7XX, RS780, RS880,
	      EVERGREEN, CAYMAN, ARUBA, Southern Islands, and Sea Islands.

       Option "DRI" "integer"
	      Define the maximum level of DRI to enable. Valid	values	are  2
	      for  DRI2	 or 3 for DRI3.	 The default is 3 for DRI3 if the Xorg
	      version is >= 1.18.3 and glamor  is  enabled,  otherwise	2  for
	      DRI2.  Note:  DRI3 may not work correctly in all cases with EXA,
	      enable at your own risk.

       Option "EnablePageFlip" "boolean"
	      Enable DRI2 page flipping.  The default is on.  Pageflipping  is
	      supported on all radeon hardware.

       Option "TearFree" "boolean"
	      Set  the	default	 value	of the per-output 'TearFree' property,
	      which controls tearing prevention using the hardware page	 flip‐
	      ping  mechanism. TearFree is on for any CRTC associated with one
	      or more outputs with TearFree on. Two separate  scanout  buffers
	      need  to	be  allocated  for each CRTC with TearFree on. If this
	      option is set, the default value of  the	property  is  'on'  or
	      'off'  accordingly.  If this option isn't set, the default value
	      of the property is auto, which means that	 TearFree  is  on  for
	      outputs  with  rotation or other RandR transforms, and for RandR
	      1.4 slave outputs, otherwise off.

       Option "AccelMethod" "string"
	      Chooses between  available  acceleration	architectures.	 Valid
	      values  are  EXA	(for  pre-TAHITI GPUs) and glamor (for R300 or
	      higher). The default is glamor with R600 or newer (with Xorg  >=
	      1.18.3, otherwise with TAHITI or newer), otherwise EXA.

       The following driver Options are supported for glamor :

       Option "ShadowPrimary" "boolean"
	      This option enables a so-called "shadow primary" buffer for fast
	      CPU access to pixel data, and separate scanout buffers for  each
	      display  controller  (CRTC).   This  may improve performance for
	      some 2D workloads, potentially at the expense of other (e.g. 3D,
	      video)  workloads.  Note in particular that enabling this option
	      currently disables page flipping.	 The default is off.

       The following driver Options are supported for EXA :

       Option "EXAVSync" "boolean"
	      This option attempts to avoid tearing  by	 stalling  the	engine
	      until  the display controller has passed the destination region.
	      It reduces tearing at the cost of performance and has been known
	      to cause instability on some chips.  The default is off.

       Option "EXAPixmaps" "boolean"
	      Under KMS, to avoid thrashing pixmaps in/out of VRAM on low mem‐
	      ory cards, we use a heuristic based on VRAM amount to  determine
	      whether  to  allow  EXA  to  use VRAM for non-essential pixmaps.
	      This option allows us to override the heuristic.	The default is
	      on  with > 32MB VRAM, off with < 32MB or when fast fb feature is
	      enabled for RS690/RS780/RS880.

       Option "SwapbuffersWait" "boolean"
	      This option controls the behavior of glXSwapBuffers and glXCopy‐
	      SubBufferMESA  calls  by GL applications.	 If enabled, the calls
	      will avoid tearing by making sure the display scanline  is  out‐
	      side  of	the area to be copied before the copy occurs.  If dis‐
	      abled, no scanline synchronization is performed, meaning tearing
	      will  likely  occur.   Note  that	 when enabled, this option can
	      adversely affect	the  framerate	of  applications  that	render
	      frames at less than refresh rate.

	      The default value is on.

TEXTURED VIDEO ATTRIBUTES
       The driver supports the following X11 Xv attributes for Textured Video.
       You can use the "xvattr" tool to query/set those attributes at runtime.

       XV_VSYNC
	      XV_VSYNC is used to control whether  textured  adapter  synchro‐
	      nizes the screen update to the monitor vertical refresh to elim‐
	      inate tearing.  It has two values:  'off'(0)  and	 'on'(1).  The
	      default is 'on'(1).

       XV_CRTC
	      XV_CRTC  is  used to control which display controller (crtc) the
	      textured	adapter	 synchronizes  the  screen  update  with  when
	      XV_VSYNC	is enabled.  The default, 'auto'(-1), will sync to the
	      display controller that more of the video is on;	when  this  is
	      ambiguous, the display controller associated with the RandR pri‐
	      mary output is preferred.	 This attribute is useful  for	things
	      like  clone  mode	 where	the user can best decide which display
	      should be synced.	 The default is 'auto'(-1).

       XV_BICUBIC
	      XV_BICUBIC is used to control whether  textured  adapter	should
	      apply  a	bicubic filter to smooth the output. It has three val‐
	      ues: 'off'(0), 'on'(1) and 'auto'(2). 'off'  means  never	 apply
	      the  filter, 'on' means always apply the filter and 'auto' means
	      apply the filter only if the X and Y sizes are  scaled  to  more
	      than  double  to avoid blurred output.  Bicubic filtering is not
	      currently compatible with other Xv  attributes  like  hue,  con‐
	      trast,  and  brightness,	and  must  be  disabled	 to  use those
	      attributes.  The default is 'off'(0).

SEE ALSO
       Xorg(1), xorg.conf(5), Xserver(1), X(7)

	1. Wiki page:
	   https://www.x.org/wiki/radeon

	2. Overview about radeon development code:
	   https://cgit.freedesktop.org/xorg/driver/xf86-video-ati/

	3. Mailing list:
	   https://lists.freedesktop.org/mailman/listinfo/amd-gfx

	4. IRC channel:
	   #radeon on irc.freenode.net

	5. Query the bugtracker for radeon bugs:
	   https://bugs.freedesktop.org/query.cgi?product=xorg&compo‐
	   nent=Driver/Radeon

	6. Submit bugs & patches:
	   https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&compo‐
	   nent=Driver/Radeon

AUTHORS
       Authors include:
       Rickard E. (Rik) Faith	faith@precisioninsight.com
       Kevin E. Martin		kem@freedesktop.org
       Alan Hourihane		alanh@fairlite.demon.co.uk
       Marc Aurele La France	tsi@xfree86.org
       Benjamin Herrenschmidt	benh@kernel.crashing.org
       Michel Dänzer		michel@daenzer.net
       Alex Deucher		alexdeucher@gmail.com
       Bogdan D.		bogdand@users.sourceforge.net
       Eric Anholt		eric@anholt.net

X Version 11		     xf86-video-ati 7.10.0		     RADEON(4)
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