[Intel-gfx] [PATCH 3/8] drm/i915/pcode: Extend pcode functions for multiple gt's

[Dixit, Ashutosh]

On Thu, 14 Apr 2022 06:28:57 -0700, Jani Nikula wrote:
>
> On Wed, 13 Apr 2022, Ashutosh Dixit <ashutosh.dixit at intel.com> wrote:
> > Each gt contains an independent instance of pcode. Extend pcode functions
> > to interface with pcode on different gt's. Previous (GT0) pcode read/write
> > interfaces are preserved.
>
> The big problem here is that this hard couples display code to gt code,
> while we're trying hard to go the opposite direction. It doesn't matter
> that the existing interfaces are preserved as wrappers when it relies on
> an intel_gt being available (via i915->gt0).
>
> Note how 'git grep intel_gt -- drivers/gpu/drm/i915/display/' matches
> only 1 line.

Hi Jani, would you have suggestions about how to do this (handle pcode on
multiple gt's)? The thinking was this patch would be a straightforward way
to avoid code duplication. Also:

int intel_gt_probe_all() {
	...
       /*
        * We always have at least one primary GT on any device
        * and it has been already initialized early during probe
        * in i915_driver_probe()
        */

Thanks.