Feature Matrix for Free Radeon Drivers

This page is only for free Radeon drivers using KMS. radeon (xf86-video-ati) for 2D; radeon, r200 Mesa and r300, r600, radeonsi Gallium drivers only. THIS PAGE IS NOT FOR FGLRX/CATALYST DRIVERS PROVIDED BY AMD/ATI.

See RadeonFeatureUMS for radeon in UMS.

See radeonhd:feature for radeonhd.

Also check out the RadeonProgram, GalliumStatus, and ATIRadeon at DRI wiki.

  • "DONE" means that it is implemented and relatively bug-free.
  • "MOSTLY" means that it is implemented but has some known bugs.
  • "WIP" means that someone has started on the initial implementation.
  • "BIOS" means only if supported by your BIOS. No software support. Yet.
  • "N/A" means that the feature is not supported by the hardware.
  • "N/N" means that the feature will not be implemented, because a better alternative is or will be available.
  • "TODO" means that someone needs to write the code. The required knowledge to write the code may or may not be known. Please ask on #radeon if you want to get your feet wet on this.
  • "UNKNOWN" means that the current status of this item isn't known. You are free to update it if you know.
2D features R100 R200 R300/R400 R500 R600/700 Evergreen N.Islands S.Islands1 C.Islands
Kernel Modesetting DONE DONE DONE DONE DONE DONE DONE DONE DONE
Max Supported Displays (Eyefinity)2 1-2 2 2 2 2 2-6 4-6 2-6 2-6
XRandR 1.2 DONE DONE DONE DONE DONE DONE DONE DONE DONE
DRI2 DONE DONE DONE DONE DONE DONE DONE DONE DONE
Page Flipping DONE DONE DONE DONE DONE DONE DONE DONE DONE
ShadowFB DONE DONE DONE DONE DONE DONE DONE DONE DONE
2D Acceleration (EXA) DONE DONE DONE DONE DONE DONE DONE N/A N/A
2D Acceleration (Glamor)3 N/A N/A N/A N/A DONE DONE DONE DONE DONE
Textured Xv DONE DONE DONE DONE DONE DONE DONE Glamor Glamor
Video Decode (VDPAU/OpenMax) on the 3D engine TODO TODO WIP WIP WIP WIP WIP WIP WIP
Video Decode (VDPAU/OpenMax) on UVD N/A N/A N/A N/A DONE 4 DONE DONE DONE DONE
Video encode (OpenMax) on VCE N/A N/A N/A N/A N/A N/A TODO 35 TODO DONE
Hybrid Graphics/PowerXpress/Enduro5 N/A N/A N/A N/A MOSTLY MOSTLY MOSTLY MOSTLY MOSTLY
Mesa 3D features R100 R200 R300/R400 R500 R600/700 Evergreen N.Islands S.Islands1 C.Islands
3D Driver radeon r200 r300g r300g r600g r600g r600g radeonsi radeonsi
Primitives DONE DONE DONE DONE DONE DONE DONE DONE DONE
Stippled Primitives DONE DONE TODO TODO TODO TODO TODO TODO TODO
Smooth Primitives DONE DONE TODO TODO TODO TODO TODO TODO TODO
Textures DONE DONE DONE DONE DONE DONE DONE DONE DONE
Hardware TCL DONE DONE DONE DONE DONE DONE DONE DONE DONE
Vertex Shaders N/A DONE DONE DONE DONE DONE DONE DONE DONE
Fragment (Pixel) Shaders N/A DONE DONE DONE DONE DONE DONE DONE DONE
GLSL N/A N/A DONE DONE DONE DONE DONE DONE DONE
Color Buffer Tiling DONE DONE DONE DONE DONE DONE DONE DONE 7 DONE
Texture Tiling TODO TODO DONE DONE DONE DONE DONE DONE 7 DONE
S3TC decompression
(via env variable / drirc)
DONE DONE DONE DONE DONE DONE DONE DONE 7 DONE
full S3TC
(via libtxc_dxtn.so)
DONE DONE DONE DONE DONE DONE DONE DONE 7 DONE
Tessellation Shader Stages N/A N/A N/A N/A N/A TODO TODO TODO TODO
Geometry Shaders N/A N/A N/A N/A DONE 17 DONE DONE DONE DONE
Anti-Aliasing (MSAA) N/A N/A DONE DONE DONE 12 DONE 12 DONE 12 DONE DONE
Anti-Aliasing (MLAA) N/A N/A N/A MOSTLY DONE DONE not tested not tested not tested
Anisotropic Filtering DONE DONE DONE DONE DONE DONE DONE DONE DONE
Hyper-Z WIP TODO MOSTLY 14 DONE MOSTLY 15 MOSTLY 15 MOSTLY 15 MOSTLY 15 MOSTLY 15
OpenGL Compliance (Driver/Hardware) 1.3/1.3 1.3/1.4 2.1/2.116 2.1/2.116 3.3/3.317 3.3/4.2 3.3/4.2 3.3/4.218 3.3/4.2 18
Output R100 R200 R300/R400 R500 R600/700 Evergreen N.Islands S.Islands1 C.Islands
TMDS (DL-DVI, SL-DVI, HDMI) DONE DONE DONE DONE DONE DONE DONE DONE DONE
LVDS DONE DONE DONE DONE DONE DONE DONE DONE DONE
VGA DONE DONE DONE DONE DONE DONE DONE DONE DONE
TV Out DONE DONE DONE 36 DONE DONE DONE N/A N/A N/A
DisplayPort N/A N/A N/A N/A DONE DONE DONE DONE DONE
eDP N/A N/A N/A N/A N/A DONE DONE DONE DONE
HDMI Audio22 N/A N/A N/A N/A DONE DONE 23 DONE 24 DONE DONE
DP Audio N/A N/A N/A N/A TODO TODO TODO TODO TODO
Power Saving R100 R200 R300/R400 R500 R600/700 Evergreen N.Islands S.Islands1 C.Islands
Engine reclocking DONE DONE DONE DONE DONE DONE DONE DONE DONE
Memory reclocking TODO TODO TODO DONE DONE DONE DONE DONE DONE
Voltage adjusting DONE DONE DONE DONE DONE DONE DONE DONE DONE
Thermal sensors N/A N/A DONE 26 DONE 26 DONE 28 DONE 28 DONE 28 DONE 28 DONE
Dynamic Power Management (DPM) N/A N/A N/A N/A DONE DONE DONE DONE DONE
Other R100 R200 R300/R400 R500 R600/700 Evergreen N.Islands S.Islands1 C.Islands
Suspend Support DONE DONE DONE DONE DONE DONE DONE DONE DONE
CrossFire (multi-card) N/A N/A N/A TODO TODO TODO TODO TODO TODO
Compute (OpenCL)33 N/A N/A N/A N/A TODO WIP WIP WIP WIP
Asynchronous DMA N/A N/A N/A N/A DONE DONE DONE DONE DONE

VSYNC

There are several mechanisms involved in tear-free rendering due to limitations in X.

3D driver environment variable

  • vblank_mode - selects whether or not the 3D application should synchronize to vblank.

DDX driver options

  • EnablePageFlip - This option enables the use of pageflipping (switching the display controller's base address pointer) rather than blits for GL buffer swaps. It only applies to fullscreen GL apps. Pageflipping is always synced to vblank at the moment.
  • SwapBuffersWait - This option prevents tearing for GL buffer swaps by waiting to update the front buffer until scanout has passed the area of the screen the GL buffer swap is going to blit to.
  • EXAVSync - This option prevents tearing for EXA operations by waiting to update the front buffer until scanout has passed the area of the screen the EXA operation is going to render to.

Xv Attribute

  • XV_VSYNC - This option prevents tearing when playing back videos using Xv by waiting to update the video image until scanout has passed the area of the screen displaying the video. It only prevents tearing if Xv is rendering directly to the front buffer. If you are using a compositer, this does not prevent tearing because Xv is rendering to an offscreen buffer and the compositor copied it to the front buffer.

KMS Power Management Options

Kernel 2.6.35 or newer is required. The pm code supports three basic methods:

  1. "dynpm"
  2. "profile"
  3. "dpm"

You can select the methods via sysfs. Echo "dynpm" or "profile" to /sys/class/drm/card0/device/power_method. "dpm" support, must be selected at boot (via radeon.dpm=1) and is only supported on R6xx and newer asics.

Controlling the fan speed directly is not possible (and would be very dangerous), but it can be lowered by setting lower power profile.

The "dynpm" method dynamically changes the clocks based on the number of pending fences, so performance is ramped up when running GPU intensive apps, and ramped down when the GPU is idle. The reclocking is attemped during vertical blanking periods, but due to the timing of the reclocking functions, doesn't not always complete in the blanking period, which can lead to flicker in the display. Due to this, dynpm only works when a single head is active.

The "profile" method exposes five profiles that can be selected from:

  1. "default"
  2. "auto"
  3. "low"
  4. "mid"
  5. "high"

Select the profile by echoing the selected profile to /sys/class/drm/card0/device/power_profile.

  • "default" uses the default clocks and does not change the power state. This is the default behavior.
  • "auto" selects between "mid" and "high" power states based on the whether the system is on battery power or not. The "low" power state are selected when the monitors are in the dpms off state.
  • "low" forces the gpu to be in the low power state all the time. Note that "low" can cause display problems on some laptops; this is why auto does not use "low" when displays are active.
  • "mid" forces the gpu to be in the "mid" power state all the time. The "low" power state is selected when the monitors are in the dpms off state.
  • "high" forces the gpu to be in the "high" power state all the time. The "low" power state is selected when the monitors are in the dpms off state. The "profile" method is not as agressive as "dynpm," but is currently much more stable and flicker free and works with multiple heads active.

The "dpm" method uses hardware on the GPU to dynamically change the clocks and voltage based on GPU load. It also enables clock and power gating.

Power management is supported on all asics (r1xx-evergreen) that include the appropriate power state tables in the vbios; not all boards do (especially older desktop cards). "dpm" is only supported on R6xx and newer asics.

Thermal sensors are implemented via external i2c chips or via the internal thermal sensor (rv6xx-evergreen only; supported in 2.6.36 or newer); not all OEMs implement a thermal sensor. To get the temperature on asics that use i2c chips, you need to load the appropriate hwmon driver for the sensor used on your board (lm63, lm64, etc.). The drm will attempt to load the appropriate hwmon driver. On boards that use the internal thermal sensor, the drm will set up the hwmon interface automatically. When the appropriate driver is loaded, the temperatures can be accessed via lm_sensors tools or via sysfs in /sys/class/hwmon.

Linux kernel parameters

Try modinfo -p radeon to find up-to-date parameters. To check default values look at drivers/gpu/drm/radeon/radeondrv.c_ in Linux kernel source. To check current values look at /sys/class/drm/card*/device/driver/module/holders/radeon/parameters/*

Option Values Default value1 Explanation
radeon.agpmode 1, 2, 4, 8, -1 0 AGP mode, -1 for PCI/PCIe mode
radeon.audio 0, 1 0 Disable/enable HDMI audio
radeon.benchmark 0 Run benchmark
radeon.connector_table 0 Force connector table
radeon.disp_priority 0, 1, 2 0 Display Priority (0 = auto, 1 = normal, 2 = high)
radeon.dynclks 0, 1, -1 -1 Disable/Enable dynamic clocks, -1 for auto
radeon.gartsize 32, 64, etc. 512 Size of PCIe/IGP gart to setup in megabytes
radeon.hw_i2c 0, 1 0 Disable/enable hw i2c engine
radeon.modeset 0, 1, -1 -1 Disable/enable modesetting, -1 for auto
radeon.msi 0, 1, -1 -1 Disable/enable MSI support, -1 for auto
radeon.no_wb 0, 1 Disable/enable AGP writeback for scratch registers
radeon.pcie_gen2 0, 1 -1 Disable/enable PCIe 2.0 support, -1 for auto
radeon.r4xx_atom 0, 1 0 Disable/enable ATOMBIOS modesetting for R4xx
radeon.test 0 Run tests
radeon.tv 0, 1 1 Disable/enable TV
radeon.vramlimit 32, 64, etc. 0 Restrict VRAM for testing

1 For Linux kernel 3.6

Decoder ring for engineering vs marketing names

Family Engineering Names Marketing Names
R100 R100, RV100, RV200, RS100, RS200 7xxx, 320-345
R200 R200, RV250, RV280, RS300 8xxx - 9250
R300 R300, R350, RV350, RV380, RS400, RS480 9500 - 9800, X300 - X600, X1050 - X1150, 200M
R400 R420, R423, RV410, RS600, RS690, RS740 X700 - X850, X12xx, 2100
R500 RV515, R520, RV530, RV560, RV570, R580 X1300 - X2300, HD2300
R600 R600, RV610, RV630, RV620, RV635, RV670, RS780, RS880 HD2400 - HD4290
R700 RV770, RV730, RV710, RV740 HD4330 - HD5165, HD5xxV
Evergreen CEDAR, REDWOOD, JUNIPER, CYPRESS, PALM (Wrestler/Ontario), SUMO (Llano), SUMO2 (Llano) HD5430 - HD5970, all HD6000 not listed under Northern Islands, HD7350
Northern Islands ARUBA (Trinity/Richland), BARTS, TURKS, CAICOS, CAYMAN HD6450, HD6570, HD6670, HD6790 - HD6990, HD64xxM, HD67xxM, HD69xxM, HD7450 - HD7670
Southern Islands CAPE VERDE, PITCAIRN, TAHITI, OLAND, HAINAN HD7750 - HD7970, R9 270, R9-280, R7 240, R7 250
Sea Islands BONAIRE, KABINI, KAVERI, HAWAII HD7790, R7 260, R9 290

Radeon 3D Hardware

3D Core Engineering Names Shader Model DX OpenGL Max Texture Size Max Renderbuffer Size
R1xx R100, RV100, RV200, RS100, RS200 NA 7 1.3 2048 2048
R2xx R200, RV250, RV280, RS300 1 8 1.4 2048 2048
R3xx R300, R350, RV350, RV380, RS400, RS480 2 9 2.1 2048 2560
R4xx R420, R423, RV410, RS600, RS690, RS740 2 9 2.1 2048 4021
R5xx RV515, R520, RV530, RV560, RV570, R580 3 9 2.1 4096 4096
R6xx R600, RV610, RV630, RV620, RV635, RV670, RS780, RS880 4 10 3.3 8192 8192
R7xx RV770, RV730, RV710, RV740 4 10 3.3 8192 8192
R8xx CEDAR, REDWOOD, JUNIPER, CYPRESS, PALM (Wrestler/Ontario), SUMO (Llano), SUMO2 (Llano), BARTS, TURKS, CAICOS 5 11 4.2 16384 16384
R9xx CAYMAN, ARUBA (Trinity/Richland) 5 11 4.2 16384 16384
RAxx CAPE VERDE, PITCAIRN, TAHITI, OLAND, HAINAN 5 11 4.2 16384 16384
RBxx BONAIRE, KABINI, KAVERI, HAWAII 5 11 4.2 16384 16384

Radeon Display Hardware

Display Core Engineering Names Display Controllers DACs TV Encoder DVO Digital Notes
Classic Radeon Rage128, R1xx-R4xx 1-2 1-2 0-1 1 2 (1 TMDS, 1 LVDS)
DCE1/Avivo R5xx 2 2 1 1 2 (1 TMDS, 1 LVDS/TMDS)
DCE2 R600, RV610, RV630, RV670, RS600, RS690, RS740 2 2 (R600, RV610, RV630, RV670), 1 (RS600, RS690, RS740) 1 1 2 (1 TMDS, 1 LVDS/TMDS) Adds HDMI 1.2 Support
DCE3 RV620, RV635, RS780, RS880 2 2 (RV620, RV635), 1 (RS780, RS880) 1 1 3 (LVDS/TMDS/DP) Adds support for DisplayPort, HDMI 1.3 Support
DCE3.1 RV770 2 2 1 1 3 (LVDS/TMDS/DP)
DCE3.2 RV710, RV730, RV740 2 2 1 1 5 (LVDS/TMDS/DP) Adds support for up to 5 digital outputs
DCE4 CEDAR, REDWOOD, JUNIPER, CYPRESS 4-6 2 1 1 6 (LVDS/TMDS/DP) Adds support for up to 6 independant displays (max of 2 non-DisplayPort displays)
DCE4.1 PALM (Wrestler/Ontario), SUMO (Llano), SUMO2 (Llano) 2 1 (PALM), 0 (SUMO, SUMO2) 1 1 6 (LVDS/TMDS/DP) VGA and LVDS are implemented via DP bridge chips
DCE5 BARTS, TURKS, CAICOS, CAYMAN 4-6 1 0 1 6 (LVDS/TMDS/DP) Adds improved gamma correction, HDMI 1.4 support, DisplayPort 1.2 support
DCE6 CAPE VERDE, PITCAIRN, TAHITI 6 1 0 1 6 (LVDS/TMDS/DP) HDMI 4K modes
DCE6.1 ARUBA (Trinity/Richland) 4 0 0 1 6 (TMDS/DP) VGA and LVDS are implemented via DP bridge chips
DCE6.4 OLAND 2 1 0 1 2 (TMDS/DP)
DCE8.1 KAVERI 4 0 0 0 7 (TMDS/DP) VGA and LVDS are implemented via DP bridge chips
DCE8.2 BONAIRE 6 1 0 1 6 (LVDS/TMDS/DP)
DCE8.3 KABINI 2 1 0 0 2 (LVDS/TMDS/DP)
DCE8.5 HAWAII 6 0 0 1 6 (TMDS/DP)

Where to get the drivers

Where to file defect reports

http://bugs.freedesktop.org using the following values for Product : Component...

  • Xorg radeon DDX - xorg : Driver/Radeon
  • Mesa 3D driver (1xx) - Mesa : Drivers/DRI/Radeon
  • Mesa 3D driver (2xx) - Mesa : Drivers/DRI/r200
  • Mesa 3D driver (3xx-5xx) - Mesa : Drivers/Gallium/r300
  • Mesa 3D driver (6xx-NI) - Mesa : Drivers/Gallium/r600
  • Mesa 3D driver (SI) - Mesa : Drivers/Gallium/radeonsi
  • KMS DRM aka Kernel graphics driver - DRI : DRM/Radeon

Documentation

Footnotes

1 Kernel 3.4 required
2 Depends on the OEM board. Max of 2 non-Displayport displays.
3 Requires a 3D driver with shader support
4 RV770, RS780/880, R6xx require kernel 3.18
5 There are two versions of hybrd graphics: MUXed and MUX-less. MUXed have a display MUX to switch the displays between the discrete and integrated cards. MUXed systems can be switched using vgaswitcheroo. MUX-less do not have a display MUX and the displays are only connected to the integrated card. On MUX-less systems, the discrete card is solely for rendering, not display. X Server 1.14 is required to support rendering and display from different cards. Most new laptops (2011+) are MUX-less.
7 Kernel 3.10 required
12 Kernel 3.6 required
14 Needs piglit and Lightsmark testing before enabling by default, see mesa commit 12dcbd595
15 Currently disabled by default. It can be enabled by setting the environment variable R600_DEBUG=hyperz, see mesa commit 01e637114
16 Hardware doesn't support ARB NPOT textures fully.
17 Requires this kernel patch: http://www.spinics.net/lists/dri-devel/msg52745.html
18 LLVM 3.5 required
22 Requires loading radeon with the audio parameter set to 1 (e.g., add radeon.audio=1 on the kernel command line in grub).
23 Kernel 3.3 required
24 Kernel 3.5 required
26 i2c chip
28 i2c chip or internal sensor
33 See http://dri.freedesktop.org/wiki/GalliumCompute
34 None
35 ARUBA only
36 No TV-out support on R4xx