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, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
index c2b4e9f..7b0b3cf 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v6_0.c
@@ -1114,11 +1114,6 @@ static void gfx_v6_0_select_se_sh(struct amdgpu_device *adev, u32 se_num,
 	WREG32(mmGRBM_GFX_INDEX, data);
 }
 
-static u32 gfx_v6_0_create_bitmask(u32 bit_width)
-{
-	return (u32)(((u64)1 << bit_width) - 1);
-}
-
 static u32 gfx_v6_0_get_rb_active_bitmap(struct amdgpu_device *adev)
 {
 	u32 data, mask;
@@ -1128,8 +1123,8 @@ static u32 gfx_v6_0_get_rb_active_bitmap(struct amdgpu_device *adev)
 
 	data = REG_GET_FIELD(data, GC_USER_RB_BACKEND_DISABLE, BACKEND_DISABLE);
 
-	mask = gfx_v6_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;
 }
@@ -1331,7 +1326,7 @@ static u32 gfx_v6_0_get_cu_enabled(struct amdgpu_device *adev)
 	data = RREG32(mmCC_GC_SHADER_ARRAY_CONFIG) |
 		RREG32(mmGC_USER_SHADER_ARRAY_CONFIG);
 
-	mask = gfx_v6_0_create_bitmask(adev->gfx.config.max_cu_per_sh);
+	mask = amdgpu_gfx_create_bitmask(adev->gfx.config.max_cu_per_sh);
 	return ~REG_GET_FIELD(data, CC_GC_SHADER_ARRAY_CONFIG, INACTIVE_CUS) & mask;
 }