From: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Wire up the enable functions to enable coarse
grained powegating.
Signed-off-by: Hawking Zhang <Hawking.Zhang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 54 +++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 8e0f7e68..bba13c7 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -1960,6 +1960,38 @@ static void gfx_v9_0_enable_cp_power_gating(struct amdgpu_device *adev,
}
}
+static void gfx_v9_0_enable_gfx_cg_power_gating(struct amdgpu_device *adev,
+ bool enable)
+{
+ uint32_t data, default_data;
+
+ default_data = data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL));
+ if (enable == true)
+ data |= RLC_PG_CNTL__GFX_POWER_GATING_ENABLE_MASK;
+ else
+ data &= ~RLC_PG_CNTL__GFX_POWER_GATING_ENABLE_MASK;
+ if(default_data != data)
+ WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data);
+}
+
+static void gfx_v9_0_enable_gfx_pipeline_powergating(struct amdgpu_device *adev,
+ bool enable)
+{
+ uint32_t data, default_data;
+
+ default_data = data = RREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL));
+ if (enable == true)
+ data |= RLC_PG_CNTL__GFX_PIPELINE_PG_ENABLE_MASK;
+ else
+ data &= ~RLC_PG_CNTL__GFX_PIPELINE_PG_ENABLE_MASK;
+ if(default_data != data)
+ WREG32(SOC15_REG_OFFSET(GC, 0, mmRLC_PG_CNTL), data);
+
+ if (!enable)
+ /* read any GFX register to wake up GFX */
+ data = RREG32(SOC15_REG_OFFSET(GC, 0, mmDB_RENDER_CONTROL));
+}
+
static void gfx_v9_0_init_pg(struct amdgpu_device *adev)
{
if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG |
@@ -3209,6 +3241,24 @@ static void gfx_v9_0_exit_rlc_safe_mode(struct amdgpu_device *adev)
}
}
+static void gfx_v9_0_update_gfx_cg_power_gating(struct amdgpu_device *adev,
+ bool enable)
+{
+ /* TODO: double check if we need to perform under safe mdoe */
+ /* gfx_v9_0_enter_rlc_safe_mode(adev); */
+
+ if ((adev->pg_flags & AMD_PG_SUPPORT_GFX_PG) && enable) {
+ gfx_v9_0_enable_gfx_cg_power_gating(adev, true);
+ if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PIPELINE)
+ gfx_v9_0_enable_gfx_pipeline_powergating(adev, true);
+ } else {
+ gfx_v9_0_enable_gfx_cg_power_gating(adev, false);
+ gfx_v9_0_enable_gfx_pipeline_powergating(adev, false);
+ }
+
+ /* gfx_v9_0_exit_rlc_safe_mode(adev); */
+}
+
static void gfx_v9_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
bool enable)
{
@@ -3400,6 +3450,7 @@ static int gfx_v9_0_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ bool enable = (state == AMD_PG_STATE_GATE) ? true : false;
switch (adev->asic_type) {
case CHIP_RAVEN:
@@ -3415,6 +3466,9 @@ static int gfx_v9_0_set_powergating_state(void *handle,
gfx_v9_0_enable_cp_power_gating(adev, true);
else
gfx_v9_0_enable_cp_power_gating(adev, false);
+
+ /* update gfx cgpg state */
+ gfx_v9_0_update_gfx_cg_power_gating(adev, enable);
break;
default:
break;
--
2.5.5
