-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello,
On Oct 13, 2009, at 2:51 PM, Adam Jackson wrote: > On Fri, 2009-10-09 at 11:26 +0200, Mark Kettenis wrote: > >>> Hmm, right. The two hunks above were aimed towards my first >>> approach for >>> fixing radeon KMS on big endian machines, by making the root window >>> visual BGRA. I've since abandoned that approach for a different >>> one, so >>> those hunks are not needed anymore and obviously even harmful. I'll >>> submit a patch to revert them. >> >> Well, it would be nice if a solution to support BGRA properly would >> be >> found. I have an i128-based card designed for Sun UltraSPARC >> workstations >> that can't do the byteswaps in hardware like the radeons can. > > Not that you're wrong (about proper BGRA support), but I think you may > be wrong (about i128). I'd like to see an X log from that chip with > Option "Debug" "on" in xorg.conf, I suspect CMD_HDF and MWn_CTRL > will be > interesting. ... which reminds me - I have an SBus card with ( among others ) an I128. I wrote an accelerated kernel driver for NetBSD using the X driver as reference, but the X driver doesn't support any mono-to- colour expansion. Does anyone have any I128 docs? Or does the chip simply not support colour expansion? I have never heard of any i128 PCI cards for Suns - do you have a model name or something? Most PCI graphics chips have their (framebuffer) apertures split into a big endian and a little endian half, some have programmable byte twiddling, some have both. It would be a strange choice to pick one of the few chips that don't support big endian mode for a big endian machine. So, it's probably there somewhere. Also, it might give you a hint or two if you ran the OF console in 24 bit ( output-device=screen:r1152x900x76x24 works on at least some Sun graphics boards ) and then check if the address property agrees with the framebuffer BAR ( there should be an entry for it in /memory/ translations, 'address' is an OF virtual address after all ) Or, just check what's halfway up the framebuffer aperture. have fun Michael -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (Darwin) iQEVAwUBStTTkMpnzkX8Yg2nAQIQKQgAkdzuuwxcFON4cPxYtMsePDIjzUXAkZhQ H55snPB5COunbiwvD2qgq9P4H+eFw3sS675wWKDVtlWht5aKRP+PpF5oZiSSVp8z b5LScg7CCGHGsD8LZXn6U8WmHAA/gdZGKU9EBpneJjQwzIzgFRqrVzYUt+3DyhMu nl6+8yeKtqq+shheai1zApglDtPwD9yiAMOQUObLsE+LiN4S1zlDZfy9pp5jsNcy FmQe99F/AaqiUdmV9O6iZ7nhgAY/rus4bR/UYmc7RnfJINZsNcYvHtCLJq9ynxGE kIHeWOUmB03D/rKykg1Y4q67oWizjXW/ouQRA+jTE7rOilPXKa9Bsw== =1Vw3 -----END PGP SIGNATURE----- _______________________________________________ xorg-devel mailing list xorg-devel@lists.x.org http://lists.x.org/mailman/listinfo/xorg-devel