[PATCH 2/5] drm/xe: Add helper to calculate adjusted register offset

[Piotr Piórkowski]

Michal Wajdeczko <michal.wajdeczko at intel.com> wrote on czw [2024-kwi-18 17:27:59 +0200]:
> Our MMIO accessing functions automatically adjust addresses for the
> media registers based on mmio.adj_limit and mmio.adj_offset logic.
> Move it to the separate helper to avoid code duplication and to
> allow using it by the upcoming changes to PF driver code.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
> ---
>  drivers/gpu/drm/xe/xe_mmio.h | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/drivers/gpu/drm/xe/xe_mmio.h b/drivers/gpu/drm/xe/xe_mmio.h
> index a3cd7b3036c7..7d003bfb91a8 100644
> --- a/drivers/gpu/drm/xe/xe_mmio.h
> +++ b/drivers/gpu/drm/xe/xe_mmio.h
> @@ -36,4 +36,11 @@ u64 xe_mmio_read64_2x32(struct xe_gt *gt, struct xe_reg reg);
>  int xe_mmio_wait32(struct xe_gt *gt, struct xe_reg reg, u32 mask, u32 val, u32 timeout_us,
>  		   u32 *out_val, bool atomic);
>  
> +static inline u32 xe_mmio_adjusted_addr(struct xe_gt *gt, u32 addr)
> +{
> +	if (addr < gt->mmio.adj_limit)
> +		addr += gt->mmio.adj_offset;
> +	return addr;
> +}
> +

Since you already extracted it, didn't you think to use it in the xe_mmio_[read|write]_* functions ? 

Piotr
>  #endif
> -- 
> 2.43.0
> 

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