From: Hawking Zhang <[email protected]> Wire up the enable functions to enable coarse grained powegating.
Signed-off-by: Hawking Zhang <[email protected]> Reviewed-by: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- 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 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
