On Wed, Aug 23, 2023 at 10:07:18AM -0700, Lucas De Marchi wrote:
> From: Clint Taylor <[email protected]>
>
> Do not read DE_RRMR register after display version 20. This register
> contains display state information during GFX state dumps.
>
> Bspec: 69456
> Cc: Anusha Srivatsa <[email protected]>
> Cc: Gustavo Sousa <[email protected]>
> Signed-off-by: Clint Taylor <[email protected]>
> Signed-off-by: Lucas De Marchi <[email protected]>
> ---
> drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
> b/drivers/gpu/drm/i915/i915_gpu_error.c
> index 4749f99e6320..fe2fa6f966f2 100644
> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
> @@ -1755,7 +1755,7 @@ static void gt_record_display_regs(struct
> intel_gt_coredump *gt)
> struct intel_uncore *uncore = gt->_gt->uncore;
> struct drm_i915_private *i915 = uncore->i915;
>
> - if (GRAPHICS_VER(i915) >= 6)
> + if (DISPLAY_VER(i915) >= 6 && DISPLAY_VER(i915) < 20)
We have IS_DISPLAY_VER() that's slightly simpler for ranges like this.
Aside from that,
Reviewed-by: Matt Roper <[email protected]>
Matt
> gt->derrmr = intel_uncore_read(uncore, DERRMR);
>
> if (GRAPHICS_VER(i915) >= 8)
> --
> 2.40.1
>
--
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation
