Re: [v2 09/19] drm/{i915, xe}: Remove i915_reg.h from intel_overlay.c

[Jani Nikula <jani.nikula@intel.com>]

On Thu, 22 Jan 2026, Uma Shankar <uma.shankar@intel.com> wrote:
> Move GEN2_ISR and some interrupt definitions to common header.
> This removes dependency of i915_reg.h from intel_overlay.c.

Subject: drm/i915.

Here too I think this should be a dedicated file for the feture.

I actually think we might be able to refactor this away, but for the
time being a header in include/drm/intel is probably fine. But at least
you can just git grep who includes it (provided it's not included in
i915_reg.h!) and see what to do about it.

BR,
Jani.

>
> Signed-off-by: Uma Shankar <uma.shankar@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_overlay.c |  2 +-
>  drivers/gpu/drm/i915/i915_reg.h              | 36 -------------------
>  include/drm/intel/intel_gmd_common_regs.h    | 38 ++++++++++++++++++++
>  3 files changed, 39 insertions(+), 37 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_overlay.c b/drivers/gpu/drm/i915/display/intel_overlay.c
> index 88eb7ae5765c..62026f7f71d3 100644
> --- a/drivers/gpu/drm/i915/display/intel_overlay.c
> +++ b/drivers/gpu/drm/i915/display/intel_overlay.c
> @@ -28,6 +28,7 @@
>  
>  #include <drm/drm_fourcc.h>
>  #include <drm/drm_print.h>
> +#include <drm/intel/intel_gmd_common_regs.h>
>  
>  #include "gem/i915_gem_internal.h"
>  #include "gem/i915_gem_object_frontbuffer.h"
> @@ -37,7 +38,6 @@
>  #include "gt/intel_ring.h"
>  
>  #include "i915_drv.h"
> -#include "i915_reg.h"
>  #include "intel_color_regs.h"
>  #include "intel_de.h"
>  #include "intel_display_regs.h"
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index c1d141e9ca47..504ba9b2fb5b 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -522,42 +522,6 @@
>  /* These are all the "old" interrupts */
>  #define ILK_BSD_USER_INTERRUPT				(1 << 5)
>  
> -#define I915_PM_INTERRUPT				(1 << 31)
> -#define I915_ISP_INTERRUPT				(1 << 22)
> -#define I915_LPE_PIPE_B_INTERRUPT			(1 << 21)
> -#define I915_LPE_PIPE_A_INTERRUPT			(1 << 20)
> -#define I915_MIPIC_INTERRUPT				(1 << 19)
> -#define I915_MIPIA_INTERRUPT				(1 << 18)
> -#define I915_PIPE_CONTROL_NOTIFY_INTERRUPT		(1 << 18)
> -#define I915_DISPLAY_PORT_INTERRUPT			(1 << 17)
> -#define I915_DISPLAY_PIPE_C_HBLANK_INTERRUPT		(1 << 16)
> -#define I915_MASTER_ERROR_INTERRUPT			(1 << 15)
> -#define I915_DISPLAY_PIPE_B_HBLANK_INTERRUPT		(1 << 14)
> -#define I915_GMCH_THERMAL_SENSOR_EVENT_INTERRUPT	(1 << 14) /* p-state */
> -#define I915_DISPLAY_PIPE_A_HBLANK_INTERRUPT		(1 << 13)
> -#define I915_HWB_OOM_INTERRUPT				(1 << 13)
> -#define I915_LPE_PIPE_C_INTERRUPT			(1 << 12)
> -#define I915_SYNC_STATUS_INTERRUPT			(1 << 12)
> -#define I915_MISC_INTERRUPT				(1 << 11)
> -#define I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT	(1 << 11)
> -#define I915_DISPLAY_PIPE_C_VBLANK_INTERRUPT		(1 << 10)
> -#define I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT	(1 << 10)
> -#define I915_DISPLAY_PIPE_C_EVENT_INTERRUPT		(1 << 9)
> -#define I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT	(1 << 9)
> -#define I915_DISPLAY_PIPE_C_DPBM_INTERRUPT		(1 << 8)
> -#define I915_DISPLAY_PLANE_C_FLIP_PENDING_INTERRUPT	(1 << 8)
> -#define I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT		(1 << 7)
> -#define I915_DISPLAY_PIPE_A_EVENT_INTERRUPT		(1 << 6)
> -#define I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT		(1 << 5)
> -#define I915_DISPLAY_PIPE_B_EVENT_INTERRUPT		(1 << 4)
> -#define I915_DISPLAY_PIPE_A_DPBM_INTERRUPT		(1 << 3)
> -#define I915_DISPLAY_PIPE_B_DPBM_INTERRUPT		(1 << 2)
> -#define I915_DEBUG_INTERRUPT				(1 << 2)
> -#define I915_WINVALID_INTERRUPT				(1 << 1)
> -#define I915_USER_INTERRUPT				(1 << 1)
> -#define I915_ASLE_INTERRUPT				(1 << 0)
> -#define I915_BSD_USER_INTERRUPT				(1 << 25)
> -
>  #define GEN6_BSD_RNCID			_MMIO(0x12198)
>  
>  #define GEN7_FF_THREAD_MODE		_MMIO(0x20a0)
> diff --git a/include/drm/intel/intel_gmd_common_regs.h b/include/drm/intel/intel_gmd_common_regs.h
> index 489d59379ab0..2214cee38cf7 100644
> --- a/include/drm/intel/intel_gmd_common_regs.h
> +++ b/include/drm/intel/intel_gmd_common_regs.h
> @@ -110,4 +110,42 @@
>  #define   GMD_ID_RELEASE_MASK			REG_GENMASK(21, 14)
>  #define   GMD_ID_STEP				REG_GENMASK(5, 0)
>  
> +#define GEN2_ISR       _MMIO(0x20ac)

This is duplication, and only used in display.

> +
> +#define I915_PM_INTERRUPT				(1 << 31)
> +#define I915_ISP_INTERRUPT				(1 << 22)
> +#define I915_LPE_PIPE_B_INTERRUPT			(1 << 21)
> +#define I915_LPE_PIPE_A_INTERRUPT			(1 << 20)
> +#define I915_MIPIC_INTERRUPT				(1 << 19)
> +#define I915_MIPIA_INTERRUPT				(1 << 18)
> +#define I915_PIPE_CONTROL_NOTIFY_INTERRUPT		(1 << 18)
> +#define I915_DISPLAY_PORT_INTERRUPT			(1 << 17)
> +#define I915_DISPLAY_PIPE_C_HBLANK_INTERRUPT		(1 << 16)
> +#define I915_MASTER_ERROR_INTERRUPT			(1 << 15)
> +#define I915_DISPLAY_PIPE_B_HBLANK_INTERRUPT		(1 << 14)
> +#define I915_GMCH_THERMAL_SENSOR_EVENT_INTERRUPT	(1 << 14) /* p-state */
> +#define I915_DISPLAY_PIPE_A_HBLANK_INTERRUPT		(1 << 13)
> +#define I915_HWB_OOM_INTERRUPT				(1 << 13)
> +#define I915_LPE_PIPE_C_INTERRUPT			(1 << 12)
> +#define I915_SYNC_STATUS_INTERRUPT			(1 << 12)
> +#define I915_MISC_INTERRUPT				(1 << 11)
> +#define I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT	(1 << 11)
> +#define I915_DISPLAY_PIPE_C_VBLANK_INTERRUPT		(1 << 10)
> +#define I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT	(1 << 10)
> +#define I915_DISPLAY_PIPE_C_EVENT_INTERRUPT		(1 << 9)
> +#define I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT	(1 << 9)
> +#define I915_DISPLAY_PIPE_C_DPBM_INTERRUPT		(1 << 8)
> +#define I915_DISPLAY_PLANE_C_FLIP_PENDING_INTERRUPT	(1 << 8)
> +#define I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT		(1 << 7)
> +#define I915_DISPLAY_PIPE_A_EVENT_INTERRUPT		(1 << 6)
> +#define I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT		(1 << 5)
> +#define I915_DISPLAY_PIPE_B_EVENT_INTERRUPT		(1 << 4)
> +#define I915_DISPLAY_PIPE_A_DPBM_INTERRUPT		(1 << 3)
> +#define I915_DISPLAY_PIPE_B_DPBM_INTERRUPT		(1 << 2)
> +#define I915_DEBUG_INTERRUPT				(1 << 2)
> +#define I915_WINVALID_INTERRUPT				(1 << 1)
> +#define I915_USER_INTERRUPT				(1 << 1)
> +#define I915_ASLE_INTERRUPT				(1 << 0)
> +#define I915_BSD_USER_INTERRUPT				(1 << 25)
> +
>  #endif

-- 
Jani Nikula, Intel