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Updated: Friday, August 13, 2021

radeon (4)


radeon - ATI/AMD RADEON video driver


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


RADEON(4)                  Kernel Interfaces Manual                  RADEON(4)

       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;
       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
       KAVERI      KAVERI APUs
       KABINI      KABINI APUs
       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,
              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

       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"
              Enable tearing prevention using the hardware page flipping mech-
              anism. Requires allocating two separate scanout buffers for each
              CRTC.   Enabling   this   option   currently   disables   Option
              "EnablePageFlip". The default is 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 as of TAHITI, 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.

       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
              default 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
              attributes.  The default is 'off'(0).

       See attributes(7) for descriptions of the following attributes:

       |ATTRIBUTE TYPE |           ATTRIBUTE VALUE             |
       |Availability   | x11/server/xorg/driver/xorg-video-ati |
       |Stability      | Volatile                              |
       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 irc.freenode.net

        5. Query the bugtracker for radeon bugs:

        6. Submit bugs & patches:

       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 Dnzer            michel@daenzer.net
       Alex Deucher             alexdeucher@gmail.com
       Bogdan D.                bogdand@users.sourceforge.net
       Eric Anholt              eric@anholt.net

       This     software     was    built    from    source    available    at
       https://github.com/oracle/solaris-userland.   The  original   community
       source   was   downloaded   from    https://www.x.org/releases/individ-

       Further information about this software can be found on the open source
       community website at https://www.x.org.

X Version 11                 xf86-video-ati 7.8.0                    RADEON(4)