linux-fbdev-users

[Linux-fbdev-users] radeonfb FBIO_WAITFORVSYNC

[Andrew H. <a....@ca...>]

Hi,

Sorry if this is a noob boob, but are there any patches
that will add FBIO_WAITFORVSYNC functionality to ioctl
in radeon_base.c?

I'm hoping to use the framebuffer in an embedded pc and
need as much mapped video ram as possible with the
ability to pan on a vsync. Would I be better off looking
at another manufacturer? It seemed that the Radeons give
a good Mb per buck ratio.

I got myself a 9250 128Mb PCI and so far found that I
can map all the memory to user space; but only after
I've started X on the device first and then closed it
down again. Otherwise I get "Found 0k...videoram" in
dmesg?

Any advice would be greatly appreciated?

Cheers, Andy.

Re: [Linux-fbdev-users] radeonfb FBIO_WAITFORVSYNC

[Ville <sy...@sc...>]

On Mon, Dec 12, 2005 at 04:08:00PM +0000, Andrew Hill wrote:
> Hi,
>=20
> Sorry if this is a noob boob, but are there any patches
> that will add FBIO_WAITFORVSYNC functionality to ioctl
> in radeon_base.c?

http://thread.gmane.org/gmane.linux.fbdev.devel/6462

--=20
Ville Syrj=E4l=E4
sy...@sc...
http://www.sci.fi/~syrjala/

Re: [Linux-fbdev-users] radeonfb FBIO_WAITFORVSYNC

[Andrew H. <a....@ca...>]

Ville et al.

Many thanks for that, it looks promising; I'll have a
play around and see what gives.

Can anyone give me a clue as to how to get the radeonfb
module to recognise the video memory without first
starting x on the card. I'm assuming that something's
not been fully initiated so I'm having a hunt around
X11R6.8.2-src\xc\programs\Xserver\hw\xfree86\drivers\ati
but no luck as yet. Are there any BIOS settings that
might be worth a tweak?

It's a CGA-9258PYVD (so an RV280) PCI card with 128Mb
that I'm trying to get working on a VIA Mini-itx board.

dmesg said:

radeonfb_pci_register BEGIN
PCI: Enabling device 0000:00:14.0 (0000 -> 0003)
ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
PCI: setting IRQ 10 as level-triggered
ACPI: PCI Interrupt 0000:00:14.0[A] -> Link [LNKB] -> GSI 10 (level, 
low) -> IRQ 10
radeonfb (0000:00:14.0): Found 0k of SDRAM 64 bits wide videoram
radeonfb (0000:00:14.0): found 0Kb video memory
ACPI: PCI interrupt for device 0000:00:14.0 disabled
radeonfb: probe of 0000:00:14.0 failed with error -5


Regards,
   Andy.



Ville Syrjälä wrote:
> On Mon, Dec 12, 2005 at 04:08:00PM +0000, Andrew Hill wrote:
> 
>>Hi,
>>
>>Sorry if this is a noob boob, but are there any patches
>>that will add FBIO_WAITFORVSYNC functionality to ioctl
>>in radeon_base.c?
> 
> 
> http://thread.gmane.org/gmane.linux.fbdev.devel/6462
> 

Re: [Linux-fbdev-users] radeonfb FBIO_WAITFORVSYNC

[Antonino A. D. <ad...@gm...>]

Andrew Hill wrote:
> Ville et al.
> 
> Many thanks for that, it looks promising; I'll have a
> play around and see what gives.
> 
> Can anyone give me a clue as to how to get the radeonfb
> module to recognise the video memory without first
> starting x on the card. I'm assuming that something's
> not been fully initiated so I'm having a hunt around
> X11R6.8.2-src\xc\programs\Xserver\hw\xfree86\drivers\ati
> but no luck as yet. Are there any BIOS settings that
> might be worth a tweak?

If this is not the primary card, you need to POST it.
Try vbetool.

http://www.srcf.ucam.org/~mjg59/vbetool/

Tony