a) How are you scheduling flips for ChromeOS HWDRM overlays(not primary planes)?
b) For this you need to understand race. The race is between - Display HW
detecting that there is HDCP display config change and deciding to destroy
crypto context vs. Display HW flipping HWDRM protected surface.
On Thu, Jan 21, 2021 at 09:34:53PM +, Gaurav, Kumar wrote:
> So the idea is to perform HWDRM session check in flip IRQL and i915 PXP will
> guarantee that IRQL is not blocked.
> We have done similar check in Windows flip IRQL.
>
What's an flip IRQL? Some sort of flip related irq handler?
So the idea is to perform HWDRM session check in flip IRQL and i915 PXP will
guarantee that IRQL is not blocked.
We have done similar check in Windows flip IRQL.
-Original Message-
From: Ville Syrjälä
Sent: Thursday, January 21, 2021 1:00 PM
To: Gaurav, Kumar
Cc: Gupta, Anshuman ; H
On Thu, Jan 21, 2021 at 08:50:18PM +, Gaurav, Kumar wrote:
> Thanks Anshuman for adding me for review.
>
> Actually, using plane Gamma is good idea to show black frame. Another option
> could be alpha value since we know for ChromeOS protected buffer will always
> be flipped on overlays.
>
Thanks Anshuman for adding me for review.
Actually, using plane Gamma is good idea to show black frame. Another option
could be alpha value since we know for ChromeOS protected buffer will always be
flipped on overlays.
Below explanation captures need for black frame in i915 Display for HWDRM
On Tue, Jan 19, 2021 at 09:35:18AM +, Gupta, Anshuman wrote:
> Jani/Ville
> I had received an offline comment form Gaurav on this patch,
> See below,
> > -Original Message-
> > From: Huang, Sean Z
> > Sent: Tuesday, January 19, 2021 1:13 PM
> > To: Intel-gfx@lists.freedesktop.org
> > C
Jani/Ville
I had received an offline comment form Gaurav on this patch,
See below,
> -Original Message-
> From: Huang, Sean Z
> Sent: Tuesday, January 19, 2021 1:13 PM
> To: Intel-gfx@lists.freedesktop.org
> Cc: Gaurav, Kumar ; Gupta, Anshuman
> ; Bommu, Krishnaiah
> ; Huang, Sean Z
> Sub
From: Anshuman Gupta
Add support to enable/disable PLANE_SURF Decryption Request bit.
It requires only to enable plane decryption support when following
condition met.
1. PXP session is enabled.
2. Buffer object is protected.
v2:
- Rebased to libva_cp-drm-tip_tgl_cp tree.
- Used gen fb obj user_
