Displaying 10 results from an estimated 10 matches for "p0ld".
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p0l
2019 Nov 20
1
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...}
If (_OSI ("Windows 2015"))
{
OSYS = 0x07DF
}
So I guess this particular check tries to identify Windows 7 and older,
and Linux.
> If ((PIOF == Zero))
> {
> P0LD = One
> TCNT = Zero
> While ((TCNT < LDLY))
> {
> If ((P0LT == 0x08))
> {
> Break
> }
>
>...
2019 Oct 22
0
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...fallback to some older method of runtime
suspending the device, and I think it will end up touching different
registers on the bridge controller which do not show the broken
behaviour.
You'll find references to following variables which all cause a link
to be powered down: Q0L2 (newest), P0L2, P0LD (oldest, I think).
Maybe I remember incorrectly and have to read the code again... okay,
the fallback path uses P0LD indeed. That's actually the only register
of those being documented by Intel afaik.
> If I read it right, the later condition tries to detect Linux which
> fails nowadays...
2019 Nov 20
0
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
for newer Windows the firmware uses bit 0x80 on 0x248 (Q0L2 being the
field name) on the bridge controller to turn of the device, on other
versions it uses the "older"? 0xb0 register and the P0LD field, which
is documented, where the former is not.
On Wed, Nov 20, 2019 at 12:51 PM Mika Westerberg
<mika.westerberg at intel.com> wrote:
>
> On Wed, Nov 20, 2019 at 01:22:16PM +0200, Mika Westerberg wrote:
> > If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) &&...
2019 Nov 20
2
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...d, Nov 20, 2019 at 12:54 PM Karol Herbst <kherbst at redhat.com> wrote:
>
> for newer Windows the firmware uses bit 0x80 on 0x248 (Q0L2 being the
> field name) on the bridge controller to turn of the device, on other
> versions it uses the "older"? 0xb0 register and the P0LD field, which
> is documented, where the former is not.
>
> On Wed, Nov 20, 2019 at 12:51 PM Mika Westerberg
> <mika.westerberg at intel.com> wrote:
> >
> > On Wed, Nov 20, 2019 at 01:22:16PM +0200, Mika Westerberg wrote:
> > > If (((OSYS <= 0x07...
2019 Oct 22
2
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
On Tue, Oct 22, 2019 at 11:16:14AM +0200, Karol Herbst wrote:
> I think there is something I totally forgot about:
>
> When there was never a driver bound to the GPU, and if runtime power
> management gets enabled on that device, runtime suspend/resume works
> as expected (I am not 100% sure on if that always works, but I will
> recheck that).
AFAIK, if there is no driver bound
2019 Nov 20
4
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...H2DI = S2DI /* \_SB_.PCI0.S2DI */
ECP2 = LCP2 /* \_SB_.PCI0.LCP2 */
}
If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) && (_REV ==
0x05))))
{
If ((PIOF == Zero))
{
P0LD = One
TCNT = Zero
While ((TCNT < LDLY))
{
If ((P0LT == 0x08))
{
Break
}
Sleep (0x10)
TC...
2019 Nov 22
1
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...H2DI = S2DI /* \_SB_.PCI0.S2DI */
ECP2 = LCP2 /* \_SB_.PCI0.LCP2 */
}
If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) && (_REV ==
0x05))))
{
If ((PIOF == Zero))
{
P0LD = One
TCNT = Zero
While ((TCNT < LDLY))
{
If ((P0LT == 0x08))
{
Break
}
Sleep (0x10)
TC...
2019 Nov 22
0
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...> ECP2 = LCP2 /* \_SB_.PCI0.LCP2 */
> }
>
> If (((OSYS <= 0x07D9) || ((OSYS == 0x07DF) && (_REV ==
> 0x05))))
> {
> If ((PIOF == Zero))
> {
> P0LD = One
> TCNT = Zero
> While ((TCNT < LDLY))
> {
> If ((P0LT == 0x08))
> {
> Break
> }
>
>...
2019 Nov 20
1
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
Hi Karol,
On Tue, Nov 19, 2019 at 11:26:45PM +0100, Karol Herbst wrote:
> On Tue, Nov 19, 2019 at 10:50 PM Bjorn Helgaas <helgaas at kernel.org> wrote:
> >
> > [+cc Dave]
> >
> > On Thu, Oct 17, 2019 at 02:19:01PM +0200, Karol Herbst wrote:
> > > Fixes state transitions of Nvidia Pascal GPUs from D3cold into higher device
> > > states.
> >
2019 Nov 22
3
[PATCH v4] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
On Thu, Nov 21, 2019 at 11:39:23PM +0100, Rafael J. Wysocki wrote:
> On Thu, Nov 21, 2019 at 8:49 PM Mika Westerberg
> <mika.westerberg at intel.com> wrote:
> >
> > On Thu, Nov 21, 2019 at 04:43:24PM +0100, Rafael J. Wysocki wrote:
> > > On Thu, Nov 21, 2019 at 1:52 PM Mika Westerberg
> > > <mika.westerberg at intel.com> wrote:
> > > >