siliconmotion(4)siliconmotion(4)NAMEsiliconmotion - Silicon Motion video driver
SYNOPSIS
Section "Device"
Identifier "devname"
Driver "siliconmotion"
...
[ Option "optionname" ["optionvalue"]]
EndSection
DESCRIPTIONsiliconmotion is an XFree86 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 XF86Config(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 follow-
ing ChipSet names may optionally be specified in the con-
fig file "Device" section, and will override the auto-
detection:
"lynx", "lynxe", "lynx3d", "lynxem", "lynxem+",
"lynx3dm".
The following Cursor Options are supported:
Option "HWCursor" "boolean"
Enable or disable the HW cursor. Default: on.
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Option "SWCursor" "boolean"
Inverse of "HWCursor". Default: off.
The following display Options are supported:
Option "ShadowFB" "boolean"
Use shadow framebuffer. Default: off.
Option "Rotate" "CW"
Option "Rotate" "CCW"
Rotate the screen CW - clockwise or CCW - counter
clockwise. Uses ShadowFB. Default: no rotation.
Option "VideoKey" "integer"
Set the video color key. Default: a little off
full blue.
Option "ByteSwap" "boolean"
Turn on byte swapping for capturing using SMI demo
board. Default: off.
Option "UseBIOS" "boolean"
Use the BIOS to set the modes. This is used for
custom panel timings. Default: on.
The following video memory Options are supported:
Option "set_mclk" "integer"
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 "NoAccel"
Disable acceleration. Very useful for determining
if the driver has problems with drawing and accel-
eration 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 "fifo_aggressive"
Option "fifo_moderate"
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Option "fifo_conservative"
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 bet-
ter 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_con-
servative 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 recom-
mended. Default: none.
The following PCI bus Options are supported:
Option "pci_burst" "boolean"
will enable PCI burst mode. This should work on all
but a few broken PCI chipsets, and will increase
performance. Default: off.
Option "pci_retry" "boolean"
will allow the driver to rely on PCI Retry to pro-
gram the ViRGE registers. pci_burst must be
enabled for this to work. This will increase per-
formance, 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.
The following additional Options are supported:
Option "ShowCache" "boolean"
Enable or disable viewing offscreen cache memory.
A development debug option. Default: off.
SEE ALSOXFree86(1), XF86Config(5), xf86config(1), Xserver(1), X(7)SUPPORT
For assistance with this driver, or XFree86 in general,
check the XFree86 web site at http://www.xfree86.org. A
FAQ is available on the web site at
http://www.xfree86.org/FAQ/. If you find a problem with
XFree86 or have a question not answered in the FAQ please
use our bug report form available on the web site or send
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mail to XFree86@XFree86.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.
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