[Openchrome-users] [openChrome] #177: Bad video ram size detection on P4M800 (was: Bad video ram size detection on some KM400)

[OpenChrome Trac]

#177: Bad video ram size detection on P4M800
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Reporter:  anonymous  |       Owner:  schlobinux                             
    Type:  patch      |      Status:  assigned                               
Priority:  major      |   Component:  initialization                         
 Version:  trunk      |    Keywords:  VT8378 S3 UniChrome insufficient memory
Blocking:             |   Blockedby:                                         
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Changes (by schlobinux):

  * version:  0.2.902 => trunk


Comment:

 The VRAM probing for the KM400/KM400A/P4M800 (chipset id 0x7205) will fail
 when on the P4M800 variant because it's using a different host bridge and
 then the VRAM needs to be read from another register. The chipset to host
 bridge mapping seems to be 1:1 in all but this case.

 See http://cgit.freedesktop.org/~libv/xf86-video-
 unichrome/tree/src/via_host.c for a host bridge probing implementation.

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Ticket URL: <http://www.openchrome.org/trac/ticket/177#comment:13>
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