Am 03.10.2018 um 11:06 schrieb Daniel Vetter:
On Wed, Oct 03, 2018 at 08:54:44AM +, Koenig, Christian wrote:
Am 03.10.2018 um 09:14 schrieb Daniel Vetter:
On Sat, Sep 29, 2018 at 9:27 AM Koenig, Christian
wrote:
This is work in progress.
I published patches to enable DMA_buf P2P a few
On Wed, Oct 03, 2018 at 08:54:44AM +, Koenig, Christian wrote:
> Am 03.10.2018 um 09:14 schrieb Daniel Vetter:
> > On Sat, Sep 29, 2018 at 9:27 AM Koenig, Christian
> > wrote:
> >> This is work in progress.
> >>
> >> I published patches to enable DMA_buf P2P a few months ago, but now I'm
>
Am 03.10.2018 um 09:14 schrieb Daniel Vetter:
> On Sat, Sep 29, 2018 at 9:27 AM Koenig, Christian
> wrote:
>> This is work in progress.
>>
>> I published patches to enable DMA_buf P2P a few months ago, but now I'm
>> waiting for the PCI subsystem to pick up core support for this.
>>
>> I can
On Sat, Sep 29, 2018 at 9:27 AM Koenig, Christian
wrote:
>
> This is work in progress.
>
> I published patches to enable DMA_buf P2P a few months ago, but now I'm
> waiting for the PCI subsystem to pick up core support for this.
>
> I can prepare you a branch based on current upstream kernel
Hi Christian,
Could I simply force it by overwriting peer2peer after the attach call?
Cheers
Dirk
> Hi Dirk,
>
> > Any ideas?
> Could be anything. Most likely cause is that some function things the
> two device can't communicate directly with each other.
>
> Please provide a full dmesg and
Hi Dirk,
Any ideas?
Could be anything. Most likely cause is that some function things the
two device can't communicate directly with each other.
Please provide a full dmesg and "lspci -t -nn -v" as attachment and note
which devices should communicate with which.
I'm currently on vacation
Hi Christian,
I took the repository Dieter suggested and gave it a spin. I am not
sure, if I got the API right.
In userspace I create a bo and get a fd.
bo = gbm_bo_create(gbm, w, h, GBM_FORMAT_ARGB, GBM_BO_USE_LINEAR);
dmabuf_fd = gbm_bo_get_fd(bo);
Then I pass the fd to the grabber
Hello Dirk,
I think Christian is talking about this branch:
https://cgit.freedesktop.org/~deathsimple/linux/log/?h=p2p
His 'home' is, here:
https://cgit.freedesktop.org/~deathsimple/linux/
Happy hacking! ;-)
Dieter
Am 29.09.2018 10:17, schrieb Dirk Eibach:
This is work in progress.
I
> This is work in progress.
>
> I published patches to enable DMA_buf P2P a few months ago, but now I'm
> waiting for the PCI subsystem to pick up core support for this.
Great news! Can you give me a link to this series so I can already have a look?
> I can prepare you a branch based on current
This is work in progress.
I published patches to enable DMA_buf P2P a few months ago, but now I'm waiting
for the PCI subsystem to pick up core support for this.
I can prepare you a branch based on current upstream kernel next week if you
want to test this.
Regards,
Christian.
Am 29.09.2018
I want to access GPU VRAM via PCIe P2P access, like DirectGMA but with
mainline drivers.
I can acquire a dmabuf from the GPU and pass it to my PCIe
framegrabber. But I don't see a way to get the PCIe bus address of the
video memory which I need for the P2P transfer. Is there already any
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