drm/amdgpu/gfx: create a common bitmask function (v2)

The same function was duplicated in all the gfx IPs. Use
a single implementation for all.

v2: use static inline (Alex Xie)

Reviewed-by: Alex Xie <AlexBin.Xie@amd.com>
Suggested-by: Andres Rodriguez <andresx7@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 16 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
index ae9861134f8b..4c04e9dec28b 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c
@@ -1608,19 +1608,6 @@ static void gfx_v7_0_select_se_sh(struct amdgpu_device *adev,
 }
 
 /**
- * gfx_v7_0_create_bitmask - create a bitmask
- *
- * @bit_width: length of the mask
- *
- * create a variable length bit mask (CIK).
- * Returns the bitmask.
- */
-static u32 gfx_v7_0_create_bitmask(u32 bit_width)
-{
-	return (u32)((1ULL << bit_width) - 1);
-}
-
-/**
  * gfx_v7_0_get_rb_active_bitmap - computes the mask of enabled RBs
  *
  * @adev: amdgpu_device pointer
@@ -1638,8 +1625,8 @@ static u32 gfx_v7_0_get_rb_active_bitmap(struct amdgpu_device *adev)
 	data &= CC_RB_BACKEND_DISABLE__BACKEND_DISABLE_MASK;
 	data >>= GC_USER_RB_BACKEND_DISABLE__BACKEND_DISABLE__SHIFT;
 
-	mask = gfx_v7_0_create_bitmask(adev->gfx.config.max_backends_per_se /
-				       adev->gfx.config.max_sh_per_se);
+	mask = amdgpu_gfx_create_bitmask(adev->gfx.config.max_backends_per_se /
+					 adev->gfx.config.max_sh_per_se);
 
 	return (~data) & mask;
 }
@@ -4157,7 +4144,7 @@ static u32 gfx_v7_0_get_cu_active_bitmap(struct amdgpu_device *adev)
 	data &= CC_GC_SHADER_ARRAY_CONFIG__INACTIVE_CUS_MASK;
 	data >>= CC_GC_SHADER_ARRAY_CONFIG__INACTIVE_CUS__SHIFT;
 
-	mask = gfx_v7_0_create_bitmask(adev->gfx.config.max_cu_per_sh);
+	mask = amdgpu_gfx_create_bitmask(adev->gfx.config.max_cu_per_sh);
 
 	return (~data) & mask;
 }