From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linux Fbdev development list <linux-fbdev-devel@lists.sourceforge.net>
Subject: cfb_* / fbcon vs. 64 bits
Date: Wed, 05 Nov 2003 17:01:19 +1100 [thread overview]
Message-ID: <1068012079.707.140.camel@gaston> (raw)
Hi !
Did anybody tested a non-accelerated framebuffer device (that is one
using the cfb_* functions) on a 64 bits arch ?
Here, with radeonfb, the mode gets properly sync'ed, but I get garbage
on the first lines where the logo should be, and then other junk that
looks like some address calculations aren't done properly in the
blitting code.
Same machine, same driver, with a 32 bits kernel it works just fine.
And yes, the driver itself seem to be passing properly the 64 bits
result of ioremap, but taht could be the problem. On ppc64, ioremap
returns "weird" addresses which are token that only readx/writex
can actually understand. Maybe I should try to "munge" this a bit
first...
Ben.
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next reply other threads:[~2003-11-05 6:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-05 6:01 Benjamin Herrenschmidt [this message]
2003-11-05 7:41 ` cfb_* / fbcon vs. 64 bits Benjamin Herrenschmidt
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