Re: [PATCH] drm/radeon/si_dpm: Fix SMU power state load

From: Alex Deucher
Date: Mon May 10 2021 - 17:19:40 EST

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In reply to: Kai-Heng Feng: "Re: [PATCH] drm/radeon/si_dpm: Fix SMU power state load"
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Applied. Thanks!

Alex

On Mon, May 10, 2021 at 1:51 AM Kai-Heng Feng
<kai.heng.feng@xxxxxxxxxxxxx> wrote:
>
> On Mon, May 10, 2021 at 6:54 AM Gustavo A. R. Silva
> <gustavoars@xxxxxxxxxx> wrote:
> >
> > Create new structure SISLANDS_SMC_SWSTATE_SINGLE, as initialState.levels
> > and ACPIState.levels are never actually used as flexible arrays. Those
> > arrays can be used as simple objects of type
> > SISLANDS_SMC_HW_PERFORMANCE_LEVEL, instead.
> >
> > Currently, the code fails because flexible array _levels_ in
> > struct SISLANDS_SMC_SWSTATE doesn't allow for code that access
> > the first element of initialState.levels and ACPIState.levels
> > arrays:
> >
> > 4353 table->initialState.levels[0].mclk.vDLL_CNTL =
> > 4354 cpu_to_be32(si_pi->clock_registers.dll_cntl);
> > ...
> > 4555 table->ACPIState.levels[0].mclk.vDLL_CNTL =
> > 4556 cpu_to_be32(dll_cntl);
> >
> > because such element cannot exist without previously allocating
> > any dynamic memory for it (which never actually happens).
> >
> > That's why struct SISLANDS_SMC_SWSTATE should only be used as type
> > for object driverState and new struct SISLANDS_SMC_SWSTATE_SINGLE is
> > created as type for objects initialState, ACPIState and ULVState.
> >
> > Also, with the change from one-element array to flexible-array member
> > in commit 96e27e8d919e ("drm/radeon/si_dpm: Replace one-element array
> > with flexible-array in struct SISLANDS_SMC_SWSTATE"), the size of
> > dpmLevels in struct SISLANDS_SMC_STATETABLE should be fixed to be
> > SISLANDS_MAX_SMC_PERFORMANCE_LEVELS_PER_SWSTATE instead of
> > SISLANDS_MAX_SMC_PERFORMANCE_LEVELS_PER_SWSTATE - 1.
> >
> > Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1583
> > Fixes: 96e27e8d919e ("drm/radeon/si_dpm: Replace one-element array with flexible-array in struct SISLANDS_SMC_SWSTATE")
> > Cc: stable@xxxxxxxxxxxxxxx
> > Reported-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
> > Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
>
> Tested-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
>
> > ---
> > drivers/gpu/drm/radeon/si_dpm.c | 174 +++++++++++++-------------
> > drivers/gpu/drm/radeon/sislands_smc.h | 34 +++--
> > 2 files changed, 109 insertions(+), 99 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
> > index 91bfc4762767..2a8b9680cf6b 100644
> > --- a/drivers/gpu/drm/radeon/si_dpm.c
> > +++ b/drivers/gpu/drm/radeon/si_dpm.c
> > @@ -4350,70 +4350,70 @@ static int si_populate_smc_initial_state(struct radeon_device *rdev,
> > u32 reg;
> > int ret;
> >
> > - table->initialState.levels[0].mclk.vDLL_CNTL =
> > + table->initialState.level.mclk.vDLL_CNTL =
> > cpu_to_be32(si_pi->clock_registers.dll_cntl);
> > - table->initialState.levels[0].mclk.vMCLK_PWRMGT_CNTL =
> > + table->initialState.level.mclk.vMCLK_PWRMGT_CNTL =
> > cpu_to_be32(si_pi->clock_registers.mclk_pwrmgt_cntl);
> > - table->initialState.levels[0].mclk.vMPLL_AD_FUNC_CNTL =
> > + table->initialState.level.mclk.vMPLL_AD_FUNC_CNTL =
> > cpu_to_be32(si_pi->clock_registers.mpll_ad_func_cntl);
> > - table->initialState.levels[0].mclk.vMPLL_DQ_FUNC_CNTL =
> > + table->initialState.level.mclk.vMPLL_DQ_FUNC_CNTL =
> > cpu_to_be32(si_pi->clock_registers.mpll_dq_func_cntl);
> > - table->initialState.levels[0].mclk.vMPLL_FUNC_CNTL =
> > + table->initialState.level.mclk.vMPLL_FUNC_CNTL =
> > cpu_to_be32(si_pi->clock_registers.mpll_func_cntl);
> > - table->initialState.levels[0].mclk.vMPLL_FUNC_CNTL_1 =
> > + table->initialState.level.mclk.vMPLL_FUNC_CNTL_1 =
> > cpu_to_be32(si_pi->clock_registers.mpll_func_cntl_1);
> > - table->initialState.levels[0].mclk.vMPLL_FUNC_CNTL_2 =
> > + table->initialState.level.mclk.vMPLL_FUNC_CNTL_2 =
> > cpu_to_be32(si_pi->clock_registers.mpll_func_cntl_2);
> > - table->initialState.levels[0].mclk.vMPLL_SS =
> > + table->initialState.level.mclk.vMPLL_SS =
> > cpu_to_be32(si_pi->clock_registers.mpll_ss1);
> > - table->initialState.levels[0].mclk.vMPLL_SS2 =
> > + table->initialState.level.mclk.vMPLL_SS2 =
> > cpu_to_be32(si_pi->clock_registers.mpll_ss2);
> >
> > - table->initialState.levels[0].mclk.mclk_value =
> > + table->initialState.level.mclk.mclk_value =
> > cpu_to_be32(initial_state->performance_levels[0].mclk);
> >
> > - table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL =
> > + table->initialState.level.sclk.vCG_SPLL_FUNC_CNTL =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_func_cntl);
> > - table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_2 =
> > + table->initialState.level.sclk.vCG_SPLL_FUNC_CNTL_2 =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_func_cntl_2);
> > - table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_3 =
> > + table->initialState.level.sclk.vCG_SPLL_FUNC_CNTL_3 =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_func_cntl_3);
> > - table->initialState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_4 =
> > + table->initialState.level.sclk.vCG_SPLL_FUNC_CNTL_4 =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_func_cntl_4);
> > - table->initialState.levels[0].sclk.vCG_SPLL_SPREAD_SPECTRUM =
> > + table->initialState.level.sclk.vCG_SPLL_SPREAD_SPECTRUM =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_spread_spectrum);
> > - table->initialState.levels[0].sclk.vCG_SPLL_SPREAD_SPECTRUM_2 =
> > + table->initialState.level.sclk.vCG_SPLL_SPREAD_SPECTRUM_2 =
> > cpu_to_be32(si_pi->clock_registers.cg_spll_spread_spectrum_2);
> >
> > - table->initialState.levels[0].sclk.sclk_value =
> > + table->initialState.level.sclk.sclk_value =
> > cpu_to_be32(initial_state->performance_levels[0].sclk);
> >
> > - table->initialState.levels[0].arbRefreshState =
> > + table->initialState.level.arbRefreshState =
> > SISLANDS_INITIAL_STATE_ARB_INDEX;
> >
> > - table->initialState.levels[0].ACIndex = 0;
> > + table->initialState.level.ACIndex = 0;
> >
> > ret = si_populate_voltage_value(rdev, &eg_pi->vddc_voltage_table,
> > initial_state->performance_levels[0].vddc,
> > - &table->initialState.levels[0].vddc);
> > + &table->initialState.level.vddc);
> >
> > if (!ret) {
> > u16 std_vddc;
> >
> > ret = si_get_std_voltage_value(rdev,
> > - &table->initialState.levels[0].vddc,
> > + &table->initialState.level.vddc,
> > &std_vddc);
> > if (!ret)
> > si_populate_std_voltage_value(rdev, std_vddc,
> > - table->initialState.levels[0].vddc.index,
> > - &table->initialState.levels[0].std_vddc);
> > + table->initialState.level.vddc.index,
> > + &table->initialState.level.std_vddc);
> > }
> >
> > if (eg_pi->vddci_control)
> > si_populate_voltage_value(rdev,
> > &eg_pi->vddci_voltage_table,
> > initial_state->performance_levels[0].vddci,
> > - &table->initialState.levels[0].vddci);
> > + &table->initialState.level.vddci);
> >
> > if (si_pi->vddc_phase_shed_control)
> > si_populate_phase_shedding_value(rdev,
> > @@ -4421,43 +4421,43 @@ static int si_populate_smc_initial_state(struct radeon_device *rdev,
> > initial_state->performance_levels[0].vddc,
> > initial_state->performance_levels[0].sclk,
> > initial_state->performance_levels[0].mclk,
> > - &table->initialState.levels[0].vddc);
> > + &table->initialState.level.vddc);
> >
> > - si_populate_initial_mvdd_value(rdev, &table->initialState.levels[0].mvdd);
> > + si_populate_initial_mvdd_value(rdev, &table->initialState.level.mvdd);
> >
> > reg = CG_R(0xffff) | CG_L(0);
> > - table->initialState.levels[0].aT = cpu_to_be32(reg);
> > + table->initialState.level.aT = cpu_to_be32(reg);
> >
> > - table->initialState.levels[0].bSP = cpu_to_be32(pi->dsp);
> > + table->initialState.level.bSP = cpu_to_be32(pi->dsp);
> >
> > - table->initialState.levels[0].gen2PCIE = (u8)si_pi->boot_pcie_gen;
> > + table->initialState.level.gen2PCIE = (u8)si_pi->boot_pcie_gen;
> >
> > if (pi->mem_gddr5) {
> > - table->initialState.levels[0].strobeMode =
> > + table->initialState.level.strobeMode =
> > si_get_strobe_mode_settings(rdev,
> > initial_state->performance_levels[0].mclk);
> >
> > if (initial_state->performance_levels[0].mclk > pi->mclk_edc_enable_threshold)
> > - table->initialState.levels[0].mcFlags = SISLANDS_SMC_MC_EDC_RD_FLAG | SISLANDS_SMC_MC_EDC_WR_FLAG;
> > + table->initialState.level.mcFlags = SISLANDS_SMC_MC_EDC_RD_FLAG | SISLANDS_SMC_MC_EDC_WR_FLAG;
> > else
> > - table->initialState.levels[0].mcFlags = 0;
> > + table->initialState.level.mcFlags = 0;
> > }
> >
> > table->initialState.levelCount = 1;
> >
> > table->initialState.flags |= PPSMC_SWSTATE_FLAG_DC;
> >
> > - table->initialState.levels[0].dpm2.MaxPS = 0;
> > - table->initialState.levels[0].dpm2.NearTDPDec = 0;
> > - table->initialState.levels[0].dpm2.AboveSafeInc = 0;
> > - table->initialState.levels[0].dpm2.BelowSafeInc = 0;
> > - table->initialState.levels[0].dpm2.PwrEfficiencyRatio = 0;
> > + table->initialState.level.dpm2.MaxPS = 0;
> > + table->initialState.level.dpm2.NearTDPDec = 0;
> > + table->initialState.level.dpm2.AboveSafeInc = 0;
> > + table->initialState.level.dpm2.BelowSafeInc = 0;
> > + table->initialState.level.dpm2.PwrEfficiencyRatio = 0;
> >
> > reg = MIN_POWER_MASK | MAX_POWER_MASK;
> > - table->initialState.levels[0].SQPowerThrottle = cpu_to_be32(reg);
> > + table->initialState.level.SQPowerThrottle = cpu_to_be32(reg);
> >
> > reg = MAX_POWER_DELTA_MASK | STI_SIZE_MASK | LTI_RATIO_MASK;
> > - table->initialState.levels[0].SQPowerThrottle_2 = cpu_to_be32(reg);
> > + table->initialState.level.SQPowerThrottle_2 = cpu_to_be32(reg);
> >
> > return 0;
> > }
> > @@ -4488,18 +4488,18 @@ static int si_populate_smc_acpi_state(struct radeon_device *rdev,
> >
> > if (pi->acpi_vddc) {
> > ret = si_populate_voltage_value(rdev, &eg_pi->vddc_voltage_table,
> > - pi->acpi_vddc, &table->ACPIState.levels[0].vddc);
> > + pi->acpi_vddc, &table->ACPIState.level.vddc);
> > if (!ret) {
> > u16 std_vddc;
> >
> > ret = si_get_std_voltage_value(rdev,
> > - &table->ACPIState.levels[0].vddc, &std_vddc);
> > + &table->ACPIState.level.vddc, &std_vddc);
> > if (!ret)
> > si_populate_std_voltage_value(rdev, std_vddc,
> > - table->ACPIState.levels[0].vddc.index,
> > - &table->ACPIState.levels[0].std_vddc);
> > + table->ACPIState.level.vddc.index,
> > + &table->ACPIState.level.std_vddc);
> > }
> > - table->ACPIState.levels[0].gen2PCIE = si_pi->acpi_pcie_gen;
> > + table->ACPIState.level.gen2PCIE = si_pi->acpi_pcie_gen;
> >
> > if (si_pi->vddc_phase_shed_control) {
> > si_populate_phase_shedding_value(rdev,
> > @@ -4507,23 +4507,23 @@ static int si_populate_smc_acpi_state(struct radeon_device *rdev,
> > pi->acpi_vddc,
> > 0,
> > 0,
> > - &table->ACPIState.levels[0].vddc);
> > + &table->ACPIState.level.vddc);
> > }
> > } else {
> > ret = si_populate_voltage_value(rdev, &eg_pi->vddc_voltage_table,
> > - pi->min_vddc_in_table, &table->ACPIState.levels[0].vddc);
> > + pi->min_vddc_in_table, &table->ACPIState.level.vddc);
> > if (!ret) {
> > u16 std_vddc;
> >
> > ret = si_get_std_voltage_value(rdev,
> > - &table->ACPIState.levels[0].vddc, &std_vddc);
> > + &table->ACPIState.level.vddc, &std_vddc);
> >
> > if (!ret)
> > si_populate_std_voltage_value(rdev, std_vddc,
> > - table->ACPIState.levels[0].vddc.index,
> > - &table->ACPIState.levels[0].std_vddc);
> > + table->ACPIState.level.vddc.index,
> > + &table->ACPIState.level.std_vddc);
> > }
> > - table->ACPIState.levels[0].gen2PCIE = (u8)r600_get_pcie_gen_support(rdev,
> > + table->ACPIState.level.gen2PCIE = (u8)r600_get_pcie_gen_support(rdev,
> > si_pi->sys_pcie_mask,
> > si_pi->boot_pcie_gen,
> > RADEON_PCIE_GEN1);
> > @@ -4534,14 +4534,14 @@ static int si_populate_smc_acpi_state(struct radeon_device *rdev,
> > pi->min_vddc_in_table,
> > 0,
> > 0,
> > - &table->ACPIState.levels[0].vddc);
> > + &table->ACPIState.level.vddc);
> > }
> >
> > if (pi->acpi_vddc) {
> > if (eg_pi->acpi_vddci)
> > si_populate_voltage_value(rdev, &eg_pi->vddci_voltage_table,
> > eg_pi->acpi_vddci,
> > - &table->ACPIState.levels[0].vddci);
> > + &table->ACPIState.level.vddci);
> > }
> >
> > mclk_pwrmgt_cntl |= MRDCK0_RESET | MRDCK1_RESET;
> > @@ -4552,59 +4552,59 @@ static int si_populate_smc_acpi_state(struct radeon_device *rdev,
> > spll_func_cntl_2 &= ~SCLK_MUX_SEL_MASK;
> > spll_func_cntl_2 |= SCLK_MUX_SEL(4);
> >
> > - table->ACPIState.levels[0].mclk.vDLL_CNTL =
> > + table->ACPIState.level.mclk.vDLL_CNTL =
> > cpu_to_be32(dll_cntl);
> > - table->ACPIState.levels[0].mclk.vMCLK_PWRMGT_CNTL =
> > + table->ACPIState.level.mclk.vMCLK_PWRMGT_CNTL =
> > cpu_to_be32(mclk_pwrmgt_cntl);
> > - table->ACPIState.levels[0].mclk.vMPLL_AD_FUNC_CNTL =
> > + table->ACPIState.level.mclk.vMPLL_AD_FUNC_CNTL =
> > cpu_to_be32(mpll_ad_func_cntl);
> > - table->ACPIState.levels[0].mclk.vMPLL_DQ_FUNC_CNTL =
> > + table->ACPIState.level.mclk.vMPLL_DQ_FUNC_CNTL =
> > cpu_to_be32(mpll_dq_func_cntl);
> > - table->ACPIState.levels[0].mclk.vMPLL_FUNC_CNTL =
> > + table->ACPIState.level.mclk.vMPLL_FUNC_CNTL =
> > cpu_to_be32(mpll_func_cntl);
> > - table->ACPIState.levels[0].mclk.vMPLL_FUNC_CNTL_1 =
> > + table->ACPIState.level.mclk.vMPLL_FUNC_CNTL_1 =
> > cpu_to_be32(mpll_func_cntl_1);
> > - table->ACPIState.levels[0].mclk.vMPLL_FUNC_CNTL_2 =
> > + table->ACPIState.level.mclk.vMPLL_FUNC_CNTL_2 =
> > cpu_to_be32(mpll_func_cntl_2);
> > - table->ACPIState.levels[0].mclk.vMPLL_SS =
> > + table->ACPIState.level.mclk.vMPLL_SS =
> > cpu_to_be32(si_pi->clock_registers.mpll_ss1);
> > - table->ACPIState.levels[0].mclk.vMPLL_SS2 =
> > + table->ACPIState.level.mclk.vMPLL_SS2 =
> > cpu_to_be32(si_pi->clock_registers.mpll_ss2);
> >
> > - table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL =
> > + table->ACPIState.level.sclk.vCG_SPLL_FUNC_CNTL =
> > cpu_to_be32(spll_func_cntl);
> > - table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_2 =
> > + table->ACPIState.level.sclk.vCG_SPLL_FUNC_CNTL_2 =
> > cpu_to_be32(spll_func_cntl_2);
> > - table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_3 =
> > + table->ACPIState.level.sclk.vCG_SPLL_FUNC_CNTL_3 =
> > cpu_to_be32(spll_func_cntl_3);
> > - table->ACPIState.levels[0].sclk.vCG_SPLL_FUNC_CNTL_4 =
> > + table->ACPIState.level.sclk.vCG_SPLL_FUNC_CNTL_4 =
> > cpu_to_be32(spll_func_cntl_4);
> >
> > - table->ACPIState.levels[0].mclk.mclk_value = 0;
> > - table->ACPIState.levels[0].sclk.sclk_value = 0;
> > + table->ACPIState.level.mclk.mclk_value = 0;
> > + table->ACPIState.level.sclk.sclk_value = 0;
> >
> > - si_populate_mvdd_value(rdev, 0, &table->ACPIState.levels[0].mvdd);
> > + si_populate_mvdd_value(rdev, 0, &table->ACPIState.level.mvdd);
> >
> > if (eg_pi->dynamic_ac_timing)
> > - table->ACPIState.levels[0].ACIndex = 0;
> > + table->ACPIState.level.ACIndex = 0;
> >
> > - table->ACPIState.levels[0].dpm2.MaxPS = 0;
> > - table->ACPIState.levels[0].dpm2.NearTDPDec = 0;
> > - table->ACPIState.levels[0].dpm2.AboveSafeInc = 0;
> > - table->ACPIState.levels[0].dpm2.BelowSafeInc = 0;
> > - table->ACPIState.levels[0].dpm2.PwrEfficiencyRatio = 0;
> > + table->ACPIState.level.dpm2.MaxPS = 0;
> > + table->ACPIState.level.dpm2.NearTDPDec = 0;
> > + table->ACPIState.level.dpm2.AboveSafeInc = 0;
> > + table->ACPIState.level.dpm2.BelowSafeInc = 0;
> > + table->ACPIState.level.dpm2.PwrEfficiencyRatio = 0;
> >
> > reg = MIN_POWER_MASK | MAX_POWER_MASK;
> > - table->ACPIState.levels[0].SQPowerThrottle = cpu_to_be32(reg);
> > + table->ACPIState.level.SQPowerThrottle = cpu_to_be32(reg);
> >
> > reg = MAX_POWER_DELTA_MASK | STI_SIZE_MASK | LTI_RATIO_MASK;
> > - table->ACPIState.levels[0].SQPowerThrottle_2 = cpu_to_be32(reg);
> > + table->ACPIState.level.SQPowerThrottle_2 = cpu_to_be32(reg);
> >
> > return 0;
> > }
> >
> > static int si_populate_ulv_state(struct radeon_device *rdev,
> > - SISLANDS_SMC_SWSTATE *state)
> > + struct SISLANDS_SMC_SWSTATE_SINGLE *state)
> > {
> > struct evergreen_power_info *eg_pi = evergreen_get_pi(rdev);
> > struct si_power_info *si_pi = si_get_pi(rdev);
> > @@ -4613,19 +4613,19 @@ static int si_populate_ulv_state(struct radeon_device *rdev,
> > int ret;
> >
> > ret = si_convert_power_level_to_smc(rdev, &ulv->pl,
> > - &state->levels[0]);
> > + &state->level);
> > if (!ret) {
> > if (eg_pi->sclk_deep_sleep) {
> > if (sclk_in_sr <= SCLK_MIN_DEEPSLEEP_FREQ)
> > - state->levels[0].stateFlags |= PPSMC_STATEFLAG_DEEPSLEEP_BYPASS;
> > + state->level.stateFlags |= PPSMC_STATEFLAG_DEEPSLEEP_BYPASS;
> > else
> > - state->levels[0].stateFlags |= PPSMC_STATEFLAG_DEEPSLEEP_THROTTLE;
> > + state->level.stateFlags |= PPSMC_STATEFLAG_DEEPSLEEP_THROTTLE;
> > }
> > if (ulv->one_pcie_lane_in_ulv)
> > state->flags |= PPSMC_SWSTATE_FLAG_PCIE_X1;
> > - state->levels[0].arbRefreshState = (u8)(SISLANDS_ULV_STATE_ARB_INDEX);
> > - state->levels[0].ACIndex = 1;
> > - state->levels[0].std_vddc = state->levels[0].vddc;
> > + state->level.arbRefreshState = (u8)(SISLANDS_ULV_STATE_ARB_INDEX);
> > + state->level.ACIndex = 1;
> > + state->level.std_vddc = state->level.vddc;
> > state->levelCount = 1;
> >
> > state->flags |= PPSMC_SWSTATE_FLAG_DC;
> > @@ -4725,7 +4725,9 @@ static int si_init_smc_table(struct radeon_device *rdev)
> > if (ret)
> > return ret;
> >
> > - table->driverState = table->initialState;
> > + table->driverState.flags = table->initialState.flags;
> > + table->driverState.levelCount = table->initialState.levelCount;
> > + table->driverState.levels[0] = table->initialState.level;
> >
> > ret = si_do_program_memory_timing_parameters(rdev, radeon_boot_state,
> > SISLANDS_INITIAL_STATE_ARB_INDEX);
> > @@ -5276,8 +5278,8 @@ static int si_upload_ulv_state(struct radeon_device *rdev)
> > if (ulv->supported && ulv->pl.vddc) {
> > u32 address = si_pi->state_table_start +
> > offsetof(SISLANDS_SMC_STATETABLE, ULVState);
> > - SISLANDS_SMC_SWSTATE *smc_state = &si_pi->smc_statetable.ULVState;
> > - u32 state_size = sizeof(SISLANDS_SMC_SWSTATE);
> > + struct SISLANDS_SMC_SWSTATE_SINGLE *smc_state = &si_pi->smc_statetable.ULVState;
> > + u32 state_size = sizeof(struct SISLANDS_SMC_SWSTATE_SINGLE);
> >
> > memset(smc_state, 0, state_size);
> >
> > diff --git a/drivers/gpu/drm/radeon/sislands_smc.h b/drivers/gpu/drm/radeon/sislands_smc.h
> > index 966e3a556011..334fef2d9cb8 100644
> > --- a/drivers/gpu/drm/radeon/sislands_smc.h
> > +++ b/drivers/gpu/drm/radeon/sislands_smc.h
> > @@ -191,6 +191,14 @@ struct SISLANDS_SMC_SWSTATE
> >
> > typedef struct SISLANDS_SMC_SWSTATE SISLANDS_SMC_SWSTATE;
> >
> > +struct SISLANDS_SMC_SWSTATE_SINGLE {
> > + uint8_t flags;
> > + uint8_t levelCount;
> > + uint8_t padding2;
> > + uint8_t padding3;
> > + SISLANDS_SMC_HW_PERFORMANCE_LEVEL level;
> > +};
> > +
> > #define SISLANDS_SMC_VOLTAGEMASK_VDDC 0
> > #define SISLANDS_SMC_VOLTAGEMASK_MVDD 1
> > #define SISLANDS_SMC_VOLTAGEMASK_VDDCI 2
> > @@ -208,19 +216,19 @@ typedef struct SISLANDS_SMC_VOLTAGEMASKTABLE SISLANDS_SMC_VOLTAGEMASKTABLE;
> >
> > struct SISLANDS_SMC_STATETABLE
> > {
> > - uint8_t thermalProtectType;
> > - uint8_t systemFlags;
> > - uint8_t maxVDDCIndexInPPTable;
> > - uint8_t extraFlags;
> > - uint32_t lowSMIO[SISLANDS_MAX_NO_VREG_STEPS];
> > - SISLANDS_SMC_VOLTAGEMASKTABLE voltageMaskTable;
> > - SISLANDS_SMC_VOLTAGEMASKTABLE phaseMaskTable;
> > - PP_SIslands_DPM2Parameters dpm2Params;
> > - SISLANDS_SMC_SWSTATE initialState;
> > - SISLANDS_SMC_SWSTATE ACPIState;
> > - SISLANDS_SMC_SWSTATE ULVState;
> > - SISLANDS_SMC_SWSTATE driverState;
> > - SISLANDS_SMC_HW_PERFORMANCE_LEVEL dpmLevels[SISLANDS_MAX_SMC_PERFORMANCE_LEVELS_PER_SWSTATE - 1];
> > + uint8_t thermalProtectType;
> > + uint8_t systemFlags;
> > + uint8_t maxVDDCIndexInPPTable;
> > + uint8_t extraFlags;
> > + uint32_t lowSMIO[SISLANDS_MAX_NO_VREG_STEPS];
> > + SISLANDS_SMC_VOLTAGEMASKTABLE voltageMaskTable;
> > + SISLANDS_SMC_VOLTAGEMASKTABLE phaseMaskTable;
> > + PP_SIslands_DPM2Parameters dpm2Params;
> > + struct SISLANDS_SMC_SWSTATE_SINGLE initialState;
> > + struct SISLANDS_SMC_SWSTATE_SINGLE ACPIState;
> > + struct SISLANDS_SMC_SWSTATE_SINGLE ULVState;
> > + SISLANDS_SMC_SWSTATE driverState;
> > + SISLANDS_SMC_HW_PERFORMANCE_LEVEL dpmLevels[SISLANDS_MAX_SMC_PERFORMANCE_LEVELS_PER_SWSTATE];
> > };
> >
> > typedef struct SISLANDS_SMC_STATETABLE SISLANDS_SMC_STATETABLE;
> > --
> > 2.27.0
> >

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