drm/amdgpu: add get_clockgating callback for gfx v9

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index b69f827..f0094a3 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -43,6 +43,8 @@ static const struct cg_flag_name clocks[] = {
        {AMD_CG_SUPPORT_GFX_CGTS_LS, "Graphics Coarse Grain Tree Shader Light Sleep"},
        {AMD_CG_SUPPORT_GFX_CP_LS, "Graphics Command Processor Light Sleep"},
        {AMD_CG_SUPPORT_GFX_RLC_LS, "Graphics Run List Controller Light Sleep"},
+       {AMD_CG_SUPPORT_GFX_3D_CGCG, "Graphics 3D Coarse Grain Clock Gating"},
+       {AMD_CG_SUPPORT_GFX_3D_CGLS, "Graphics 3D Coarse Grain memory Light Sleep"},
        {AMD_CG_SUPPORT_MC_LS, "Memory Controller Light Sleep"},
        {AMD_CG_SUPPORT_MC_MGCG, "Memory Controller Medium Grain Clock Gating"},
        {AMD_CG_SUPPORT_SDMA_LS, "System Direct Memory Access Light Sleep"},

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 07800c9..69fa156 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -2946,6 +2946,48 @@ static int gfx_v9_0_set_clockgating_state(void *handle,
        return 0;
 }
 
+static void gfx_v9_0_get_clockgating_state(void *handle, u32 *flags)
+{
+       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+       int data;
+
+       if (amdgpu_sriov_vf(adev))
+               *flags = 0;
+
+       /* AMD_CG_SUPPORT_GFX_MGCG */
+       data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_CGTT_MGCG_OVERRIDE));
+       if (!(data & RLC_CGTT_MGCG_OVERRIDE__GFXIP_MGCG_OVERRIDE_MASK))
+               *flags |= AMD_CG_SUPPORT_GFX_MGCG;
+
+       /* AMD_CG_SUPPORT_GFX_CGCG */
+       data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_CGCG_CGLS_CTRL));
+       if (data & RLC_CGCG_CGLS_CTRL__CGCG_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_CGCG;
+
+       /* AMD_CG_SUPPORT_GFX_CGLS */
+       if (data & RLC_CGCG_CGLS_CTRL__CGLS_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_CGLS;
+
+       /* AMD_CG_SUPPORT_GFX_RLC_LS */
+       data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_MEM_SLP_CNTL));
+       if (data & RLC_MEM_SLP_CNTL__RLC_MEM_LS_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_RLC_LS | AMD_CG_SUPPORT_GFX_MGLS;
+
+       /* AMD_CG_SUPPORT_GFX_CP_LS */
+       data = RREG32(SOC15_REG_OFFSET(GC, 0, mmCP_MEM_SLP_CNTL));
+       if (data & CP_MEM_SLP_CNTL__CP_MEM_LS_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_CP_LS | AMD_CG_SUPPORT_GFX_MGLS;
+
+       /* AMD_CG_SUPPORT_GFX_3D_CGCG */
+       data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_CGCG_CGLS_CTRL_3D));
+       if (data & RLC_CGCG_CGLS_CTRL_3D__CGCG_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_3D_CGCG;
+
+       /* AMD_CG_SUPPORT_GFX_3D_CGLS */
+       if (data & RLC_CGCG_CGLS_CTRL_3D__CGLS_EN_MASK)
+               *flags |= AMD_CG_SUPPORT_GFX_3D_CGLS;
+}
+
 static u64 gfx_v9_0_ring_get_rptr_gfx(struct amdgpu_ring *ring)
 {
        return ring->adev->wb.wb[ring->rptr_offs]; /* gfx9 is 32bit rptr*/
@@ -3626,6 +3668,7 @@ const struct amd_ip_funcs gfx_v9_0_ip_funcs = {
        .soft_reset = gfx_v9_0_soft_reset,
        .set_clockgating_state = gfx_v9_0_set_clockgating_state,
        .set_powergating_state = gfx_v9_0_set_powergating_state,
+       .get_clockgating_state = gfx_v9_0_get_clockgating_state,
 };
 
 static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = {