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| author |   Evan Quan <evan.quan@amd.com> | 2020-01-30 16:46:38 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2020-02-04 10:37:08 -0500 |
| commit | 1cf8c930b378016846c88ef0f1444248033326ec (patch) | |
| tree | edd5b4e6e46e26e8fda94dd4202eef0b5fcdb085 /drivers/gpu/drm/amd/powerplay/navi10_ppt.c | |
| parent | drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode (diff) | |
| download | wireguard-linux-1cf8c930b378016846c88ef0f1444248033326ec.tar.xz wireguard-linux-1cf8c930b378016846c88ef0f1444248033326ec.zip | |
drm/amd/powerplay: fix navi10 system intermittent reboot issue V2
This workaround is needed only for Navi10 12 Gbps SKUs.
V2: added SMU firmware version guard
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/navi10_ppt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c index f1b27fc20c19..e59cd2c74dc9 100644 --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c @@ -119,6 +119,8 @@ static struct smu_11_0_cmn2aisc_mapping navi10_message_map[SMU_MSG_MAX_COUNT] = MSG_MAP(PowerDownJpeg, PPSMC_MSG_PowerDownJpeg), MSG_MAP(BacoAudioD3PME, PPSMC_MSG_BacoAudioD3PME), MSG_MAP(ArmD3, PPSMC_MSG_ArmD3), + MSG_MAP(DAL_DISABLE_DUMMY_PSTATE_CHANGE,PPSMC_MSG_DALDisableDummyPstateChange), + MSG_MAP(DAL_ENABLE_DUMMY_PSTATE_CHANGE, PPSMC_MSG_DALEnableDummyPstateChange), }; static struct smu_11_0_cmn2aisc_mapping navi10_clk_map[SMU_CLK_COUNT] = { @@ -2093,6 +2095,61 @@ static int navi10_run_btc(struct smu_context *smu) return ret; } +static int navi10_dummy_pstate_control(struct smu_context *smu, bool enable) +{ + int result = 0; + + if (!enable) + result = smu_send_smc_msg(smu, SMU_MSG_DAL_DISABLE_DUMMY_PSTATE_CHANGE); + else + result = smu_send_smc_msg(smu, SMU_MSG_DAL_ENABLE_DUMMY_PSTATE_CHANGE); + + return result; +} + +static int navi10_disable_umc_cdr_12gbps_workaround(struct smu_context *smu) +{ + uint32_t uclk_count, uclk_min, uclk_max; + uint32_t smu_version; + int ret = 0; + + ret = smu_get_smc_version(smu, NULL, &smu_version); + if (ret) + return ret; + + /* This workaround is available only for 42.50 or later SMC firmwares */ + if (smu_version < 0x2A3200) + return 0; + + ret = smu_get_dpm_level_count(smu, SMU_UCLK, &uclk_count); + if (ret) + return ret; + + ret = smu_get_dpm_freq_by_index(smu, SMU_UCLK, (uint16_t)0, &uclk_min); + if (ret) + return ret; + + ret = smu_get_dpm_freq_by_index(smu, SMU_UCLK, (uint16_t)(uclk_count - 1), &uclk_max); + if (ret) + return ret; + + /* Force UCLK out of the highest DPM */ + ret = smu_set_hard_freq_range(smu, SMU_UCLK, 0, uclk_min); + if (ret) + return ret; + + /* Revert the UCLK Hardmax */ + ret = smu_set_hard_freq_range(smu, SMU_UCLK, 0, uclk_max); + if (ret) + return ret; + + /* + * In this case, SMU already disabled dummy pstate during enablement + * of UCLK DPM, we have to re-enabled it. + * */ + return navi10_dummy_pstate_control(smu, true); +} + static const struct pptable_funcs navi10_ppt_funcs = { .tables_init = navi10_tables_init, .alloc_dpm_context = navi10_allocate_dpm_context, @@ -2187,6 +2244,7 @@ static const struct pptable_funcs navi10_ppt_funcs = { .od_edit_dpm_table = navi10_od_edit_dpm_table, .get_pptable_power_limit = navi10_get_pptable_power_limit, .run_btc = navi10_run_btc, + .disable_umc_cdr_12gbps_workaround = navi10_disable_umc_cdr_12gbps_workaround, }; void navi10_set_ppt_funcs(struct smu_context *smu) |