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RADEON(4x)							    RADEON(4x)

       radeon -	ATI/AMD	RADEON video driver

       Section "Device"
	 Identifier "devname"
	 Driver	"radeon"

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

       o Full support for 8-, 15-, 16- and 24-bit pixel	depths,	and for	30-bit
	 depth on Linux	3.16 and later;
       o RandR 1.2 and RandR 1.3 support;
       o Full EXA 2D acceleration;
       o Textured  XVideo acceleration including anti-tearing support (Bicubic
	 filtering  only  available  on	 R/RV3xx,  R/RV/RS4xx,	R/RV5xx,   and
       o 3D acceleration;

       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
		   Radeon X1300/X1400/X1500/X1550/X2300
       R520	   Radeon X1800
       RV530/RV560 Radeon X1600/X1650/X1700
       RV570/R580  Radeon X1900/X1950
		   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
		   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
       HAWAII	   Radeon R9 series

       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,
	      Southern	Islands,  and  Sea  Islands  and  off  for R/RV/RS1XX,
	      R/RV/RS2XX, RS3XX, and RS690/RS780/RS880 when fast fb feature is

       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,  EV-
	      ERGREEN, 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 op-
	      tion  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 rotated
	      outputs, outputs with RandR transforms applied and for RandR 1.4
	      secondary	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 un-
	      til 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  ad-
	      versely  affect the framerate of applications that render	frames
	      at less than refresh rate.

	      The default value	is on.

       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	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 de-
	      fault is 'on'(1).

	      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  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  at-
	      tributes.	 The default is	'off'(0).

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

	1. Wiki	page:

	2. Overview about radeon development code:

	3. Mailing list:

	4. IRC channel:
	   #radeon on

	5. Query the bugtracker	for radeon bugs:

	6. Submit bugs & patches:

       Authors include:
       Rickard E. (Rik)	Faith
       Kevin E.	Martin
       Alan Hourihane
       Marc Aurele La France
       Benjamin	Herrenschmidt
       Michel Danzer
       Alex Deucher
       Bogdan D.
       Eric Anholt

X Version 11		     xf86-video-ati 19.1.0		    RADEON(4x)


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