RE: [Intel-gfx] [RFC 1/1] drm/i915/dgfx: Avoid parent bridge rpm on mmap mappings

2022-08-16 Thread Gupta, Anshuman
> -Original Message- > From: Vivi, Rodrigo > Sent: Tuesday, August 9, 2022 8:36 PM > To: Gupta, Anshuman > Cc: intel-...@lists.freedesktop.org; dan...@ffwll.ch; Wilson, Chris P > ; dri-devel@lists.freedesktop.org > Subject: Re: [Intel-gfx] [RFC 1/1] drm/i915/dgfx

RE: [Intel-gfx] [RFC 1/1] drm/i915/dgfx: Avoid parent bridge rpm on mmap mappings

2022-08-09 Thread Gupta, Anshuman
> -Original Message- > From: Vivi, Rodrigo > Sent: Tuesday, August 9, 2022 8:36 PM > To: Gupta, Anshuman > Cc: intel-...@lists.freedesktop.org; dan...@ffwll.ch; Wilson, Chris P > ; dri-devel@lists.freedesktop.org > Subject: Re: [Intel-gfx] [RFC 1/1] drm/i915/dgfx

Re: [Intel-gfx] [RFC 1/1] drm/i915/dgfx: Avoid parent bridge rpm on mmap mappings

2022-08-09 Thread Rodrigo Vivi
On Mon, Aug 08, 2022 at 04:05:55PM +0530, Anshuman Gupta wrote: > As per PCIe Spec Section 5.3, > When a Type 1 Function associated with a Switch/Root > Port (a “virtual bridge”) is in a non-D0 power state, > it will emulate the behavior of a conventional PCI bridge > in its handling of Memory,