[PATCH] drm/amdgpu: refine pg code for gfx_v8.
Alex Deucher
alexdeucher at gmail.com
Thu Dec 1 15:43:35 UTC 2016
On Thu, Dec 1, 2016 at 3:24 AM, Rex Zhu <Rex.Zhu at amd.com> wrote:
> 1. bit CP_PG_DISABLE was reversed.
Please split this out as a separate patch. Also, with this fixed, we
should be able to enable the AMD_PG_SUPPORT_CP flag for CZ and ST.
> 2. load RLC_SRM_INDEX_CNTL_ADDR/DATA_x pairs
> with valid addr/data.
Please split this out as a separate patch.
> 3. always init gfx pg.
I don't think we want to do this. We need to be able to disable
various pg features for debugging. Also some asics don't support gfx
pg (e.g., fiji), so we don't want to enable it on those asics.
> 4. delete repeated check for pg mask.
>
> Change-Id: I9fcc8d1f79f5fa1803cb2625aa292188a656ae6b
> Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 85 +++++++++++++++--------------------
> 1 file changed, 37 insertions(+), 48 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> index c02ae07..fee8c2a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
> @@ -3948,8 +3948,10 @@ static int gfx_v8_0_init_save_restore_list(struct amdgpu_device *adev)
> temp = mmRLC_SRM_INDEX_CNTL_ADDR_0;
> data = mmRLC_SRM_INDEX_CNTL_DATA_0;
> for (i = 0; i < sizeof(unique_indices) / sizeof(int); i++) {
> - amdgpu_mm_wreg(adev, temp + i, unique_indices[i] & 0x3FFFF, false);
> - amdgpu_mm_wreg(adev, data + i, unique_indices[i] >> 20, false);
> + if (unique_indices[i] != 0) {
> + amdgpu_mm_wreg(adev, temp + i, unique_indices[i] & 0x3FFFF, false);
> + amdgpu_mm_wreg(adev, data + i, unique_indices[i] >> 20, false);
> + }
> }
> kfree(register_list_format);
>
> @@ -3965,20 +3967,16 @@ static void gfx_v8_0_init_power_gating(struct amdgpu_device *adev)
> {
> uint32_t data;
>
> - if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG |
> - AMD_PG_SUPPORT_GFX_SMG |
> - AMD_PG_SUPPORT_GFX_DMG)) {
> - WREG32_FIELD(CP_RB_WPTR_POLL_CNTL, IDLE_POLL_COUNT, 0x60);
> + WREG32_FIELD(CP_RB_WPTR_POLL_CNTL, IDLE_POLL_COUNT, 0x60);
>
> - data = REG_SET_FIELD(0, RLC_PG_DELAY, POWER_UP_DELAY, 0x10);
> - data = REG_SET_FIELD(data, RLC_PG_DELAY, POWER_DOWN_DELAY, 0x10);
> - data = REG_SET_FIELD(data, RLC_PG_DELAY, CMD_PROPAGATE_DELAY, 0x10);
> - data = REG_SET_FIELD(data, RLC_PG_DELAY, MEM_SLEEP_DELAY, 0x10);
> - WREG32(mmRLC_PG_DELAY, data);
> + data = REG_SET_FIELD(0, RLC_PG_DELAY, POWER_UP_DELAY, 0x10);
> + data = REG_SET_FIELD(data, RLC_PG_DELAY, POWER_DOWN_DELAY, 0x10);
> + data = REG_SET_FIELD(data, RLC_PG_DELAY, CMD_PROPAGATE_DELAY, 0x10);
> + data = REG_SET_FIELD(data, RLC_PG_DELAY, MEM_SLEEP_DELAY, 0x10);
> + WREG32(mmRLC_PG_DELAY, data);
>
> - WREG32_FIELD(RLC_PG_DELAY_2, SERDES_CMD_DELAY, 0x3);
> - WREG32_FIELD(RLC_AUTO_PG_CTRL, GRBM_REG_SAVE_GFX_IDLE_THRESHOLD, 0x55f0);
> - }
> + WREG32_FIELD(RLC_PG_DELAY_2, SERDES_CMD_DELAY, 0x3);
> + WREG32_FIELD(RLC_AUTO_PG_CTRL, GRBM_REG_SAVE_GFX_IDLE_THRESHOLD, 0x55f0);
> }
>
> static void cz_enable_sck_slow_down_on_power_up(struct amdgpu_device *adev,
> @@ -3995,41 +3993,35 @@ static void cz_enable_sck_slow_down_on_power_down(struct amdgpu_device *adev,
>
> static void cz_enable_cp_power_gating(struct amdgpu_device *adev, bool enable)
> {
> - WREG32_FIELD(RLC_PG_CNTL, CP_PG_DISABLE, enable ? 1 : 0);
> + WREG32_FIELD(RLC_PG_CNTL, CP_PG_DISABLE, enable ? 0 : 1);
> }
>
> static void gfx_v8_0_init_pg(struct amdgpu_device *adev)
> {
> - if (adev->pg_flags & (AMD_PG_SUPPORT_GFX_PG |
> - AMD_PG_SUPPORT_GFX_SMG |
> - AMD_PG_SUPPORT_GFX_DMG |
> - AMD_PG_SUPPORT_CP |
> - AMD_PG_SUPPORT_GDS |
> - AMD_PG_SUPPORT_RLC_SMU_HS)) {
> - gfx_v8_0_init_csb(adev);
> - gfx_v8_0_init_save_restore_list(adev);
> - gfx_v8_0_enable_save_restore_machine(adev);
> -
> - if ((adev->asic_type == CHIP_CARRIZO) ||
> - (adev->asic_type == CHIP_STONEY)) {
> - WREG32(mmRLC_JUMP_TABLE_RESTORE, adev->gfx.rlc.cp_table_gpu_addr >> 8);
> - gfx_v8_0_init_power_gating(adev);
> - WREG32(mmRLC_PG_ALWAYS_ON_CU_MASK, adev->gfx.cu_info.ao_cu_mask);
> - if (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS) {
> - cz_enable_sck_slow_down_on_power_up(adev, true);
> - cz_enable_sck_slow_down_on_power_down(adev, true);
> - } else {
> - cz_enable_sck_slow_down_on_power_up(adev, false);
> - cz_enable_sck_slow_down_on_power_down(adev, false);
> - }
> - if (adev->pg_flags & AMD_PG_SUPPORT_CP)
> - cz_enable_cp_power_gating(adev, true);
> - else
> - cz_enable_cp_power_gating(adev, false);
> - } else if (adev->asic_type == CHIP_POLARIS11) {
> - gfx_v8_0_init_power_gating(adev);
> + gfx_v8_0_init_csb(adev);
> + gfx_v8_0_init_save_restore_list(adev);
> + gfx_v8_0_enable_save_restore_machine(adev);
> +
> + if ((adev->asic_type == CHIP_CARRIZO) ||
> + (adev->asic_type == CHIP_STONEY)) {
> + WREG32(mmRLC_JUMP_TABLE_RESTORE, adev->gfx.rlc.cp_table_gpu_addr >> 8);
> + gfx_v8_0_init_power_gating(adev);
> + WREG32(mmRLC_PG_ALWAYS_ON_CU_MASK, adev->gfx.cu_info.ao_cu_mask);
> + if (adev->pg_flags & AMD_PG_SUPPORT_RLC_SMU_HS) {
> + cz_enable_sck_slow_down_on_power_up(adev, true);
> + cz_enable_sck_slow_down_on_power_down(adev, true);
> + } else {
> + cz_enable_sck_slow_down_on_power_up(adev, false);
> + cz_enable_sck_slow_down_on_power_down(adev, false);
> }
> + if (adev->pg_flags & AMD_PG_SUPPORT_CP)
> + cz_enable_cp_power_gating(adev, true);
> + else
> + cz_enable_cp_power_gating(adev, false);
> + } else if (adev->asic_type == CHIP_POLARIS11) {
> + gfx_v8_0_init_power_gating(adev);
> }
> +
> }
>
> static void gfx_v8_0_rlc_stop(struct amdgpu_device *adev)
> @@ -5570,14 +5562,11 @@ static int gfx_v8_0_set_powergating_state(void *handle,
> struct amdgpu_device *adev = (struct amdgpu_device *)handle;
> bool enable = (state == AMD_PG_STATE_GATE) ? true : false;
>
> - if (!(adev->pg_flags & AMD_PG_SUPPORT_GFX_PG))
> - return 0;
> -
> switch (adev->asic_type) {
> case CHIP_CARRIZO:
> case CHIP_STONEY:
> - if (adev->pg_flags & AMD_PG_SUPPORT_GFX_PG)
> - cz_update_gfx_cg_power_gating(adev, enable);
> +
> + cz_update_gfx_cg_power_gating(adev, enable);
>
> if ((adev->pg_flags & AMD_PG_SUPPORT_GFX_SMG) && enable)
> gfx_v8_0_enable_gfx_static_mg_power_gating(adev, true);
> --
> 1.9.1
>
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