siliconmotion
is an Xorg driver for Silicon Motion based video cards. The driver is fully
accelerated, and provides support for the following framebuffer depths:
8, 16, and 24. All
visual types are supported for depth 8, and TrueColor
visuals are supported for the other depths.
SUPPORTED HARDWARE
The
siliconmotion
driver supports PCI and AGP video cards based on the following Silicon Motion chips:
Lynx
SM910
LynxE
SM810
Lynx3D
SM820
LynxEM
SM710
LynxEM+
SM712
Lynx3DM
SM720
CONFIGURATION DETAILS
Please refer to xorg.conf(5) for general configuration
details. This section only covers configuration details specific to this
driver. All options names are case and white space insensitive when
parsed by the server, for example, "lynxe" and "LynxE" are equivalent.
The driver auto-detects the chipset type, but the following
ChipSet
names may optionally be specified in the config file
N'34'DeviceN'34'
section, and will override the auto-detection:
Rotate the screen CW - clockwise or CCW - counter clockwise.
Uses ShadowFB and disables RandR extension. Default: no rotation.
Option N'34'VideoKeyN'34' N'34'integerN'34'
Set the video color key. Default: a little off full blue.
Option N'34'ByteSwapN'34' N'34'booleanN'34'
Turn on byte swapping for capturing using SMI demo board. Default: off.
Option N'34'InterlacedN'34' N'34'booleanN'34'
Turn on interlaced video capturing. Default: off.
Option N'34'UseBIOSN'34' N'34'booleanN'34'
Use the BIOS to set the modes. This is used for custom panel timings.
Default: on.
Option N'34'ZoomOnLCDN'34' N'34'booleanN'34'
Allow changing resolution on LCD (Ctrl-Alt-Plus and Ctrl-Alt-Minus).
Default: off.
Option N'34'DualheadN'34' N'34'booleanN'34'
Enable dualhead mode. Due to hardware limitations, dualhead is limited
to depth 16 and to the panel size and timings on both the flat panel and
the CRT and the CRT must be to the right of the flat panel. Only lynx
chips are supported at the moment.
Default: off.
The following video memory
Options
are supported:
Option N'34'set_mclkN'34' N'34'integerN'34'
sets the memory clock, where
integer
is in kHz, and
integer
<= 100000. Default: probe the memory clock value,
and use it at server start.
The following acceleration and graphics engine
Options
are supported:
Option N'34'NoAccelN'34'
Disable acceleration. Very useful for determining if the
driver has problems with drawing and acceleration routines. This is the first
option to try if your server runs but you see graphic corruption on the screen.
Using it decreases performance, as it uses software emulation for drawing
operations the video driver can accelerate with hardware.
Default: acceleration is enabled.
Option N'34'fifo_aggressiveN'34'
Option N'34'fifo_moderateN'34'
Option N'34'fifo_conservativeN'34'
alter the settings
for the threshold at which the pixel FIFO takes over the internal
memory bus to refill itself. The smaller this threshold, the better
the acceleration performance of the card. You may try the fastest
setting
(fifo_aggressive)
and move down if you encounter pixel corruption.
The optimal setting will probably depend on dot-clock and on color
depth. Note that specifying any of these options will also alter other
memory settings which may increase performance, so trying
fifo_conservative
will in most cases be a slight benefit (this uses the chip defaults).
If pixel corruption or transient streaking is observed during drawing
operations then removing any fifo options is recommended. Default: none.
The following PCI bus
Options
are supported:
Option N'34'pci_burstN'34' N'34'booleanN'34'
will enable PCI burst mode. This should work on all but a
few broken PCI chipsets, and will increase performance. Default: off.
Option N'34'pci_retryN'34' N'34'booleanN'34'
will allow the driver to rely on PCI Retry to program the
ViRGE registers.
pci_burst
must be enabled for this to work.
This will increase performance, especially for small fills/blits,
because the driver does not have to poll the ViRGE before sending it
commands to make sure it is ready. It should work on most
recent PCI chipsets. Default: off.
Option N'34'AccelMethodN'34' N'34'stringN'34'
Chooses between available acceleration architectures. Valid options are
XAA
and
EXA.
XAA is the traditional acceleration architecture and support for it is very
stable. EXA is a newer acceleration architecture with better performance for
the Render and Composite extensions, but the rendering code for it is newer and
possibly unstable. The default is
XAA.
The following additional
Options
are supported:
Option N'34'ShowCacheN'34' N'34'booleanN'34'
Enable or disable viewing offscreen cache memory. A
development debug option. Default: off.
For assistance with this driver, or Xorg in general, check the web
site at http://www.x.org/. If you find a problem with Xorg or have a
question not answered in the FAQ please use our bug report form available on
the web site or send mail to xorg@lists.freedesktop.org. When reporting problems
with the driver send as much detail as possible, including chipset type, a
server output log, and operating system specifics.
AUTHORS
Kevin Brosius,
Matt Grossman,
Harald Koenig,
Sebastien Marineau,
Mark Vojkovich,
Frido Garritsen,
Corvin Zahn.
