Am 07.06.2016 um 14:19 schrieb Mathieu Malaterre:
On Tue, Jun 7, 2016 at 8:05 AM, Mathieu Malaterre <malat@xxxxxxxxxx> wrote:
Hi Alex,
On Mon, Jun 6, 2016 at 7:20 PM, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
On Mon, Jun 6, 2016 at 1:16 PM, Marek Olšák <maraeo@xxxxxxxxx> wrote:
[+ dri-devel]
On Mon, Jun 6, 2016 at 8:42 AM, Mathieu Malaterre <malat@xxxxxxxxxx> wrote:
Hi,
Before reporting a possible invalid bug report. Does anyone knows why
radeaonfb is not configured the same way radeon is ? For instance on a
PowerPC machine, when Open Firmware Frame Buffer is used (OFfb), I
cannot `modprobe radeonfb` (but I can load `radeon`). It fails with:
[ 96.551486] radeonfb 0000:00:10.0: enabling device (0006 -> 0007)
[ 96.551526] radeonfb 0000:00:10.0: BAR 0: can't reserve [mem
0x98000000-0x9fffffff pref]
[ 96.551531] radeonfb (0000:00:10.0): cannot request region 0.
[ 96.551545] radeonfb: probe of 0000:00:10.0 failed with error -16
It seems (to me) that it should be possible to add something like this
to `radeonfb`:
https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/radeon/radeon_drv.c#L353
Is the above correct ?
Yes, probably. But is there any reason why you'd want to use radeonfb
rather than radeon?
I'll check with the debian-installer team if this is possible. Right
now the debian-installer is setup to use `radeonfb` (at least on
PowerPC) during the text-based installation.
ref: https://bugs.debian.org/825840#77
[between a rock and a hard place]
So it seems there would be a risk moving from radeonfb to radeon, esp.
since Debian does not distribute (at least by default) the firmware
during installation: https://bugs.debian.org/826629#12.
I'll report the bug against radeonfb and see if I can provide a patch.
radeon should be able to offer the same functionality as radeonfb even
without firmware.
But saying so that functionality is usually rarely tested.
Regards,
Christian.
-M
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