diff options
| author | Kenneth Feng <kenneth.feng@amd.com> | 2019-10-11 17:51:34 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-10-15 15:50:37 -0400 |
| commit | 372120f0a5922655eb2579a50d6aafad474fd14c (patch) | |
| tree | c54eedc26b1ba676b59363be4d76b31c6ec4bf24 /drivers/gpu/drm/amd/powerplay/vega20_ppt.c | |
| parent | bcccee89f48c1e96b2aea067507e89f3581693bb (diff) | |
drm/amd/powerplay: bug fix for pcie parameters override
Bug fix for pcie paramerers override on swsmu.
Below is a scenario to have this problem.
pptable definition on pcie dpm:
0 -> pcie gen speed:1, pcie lanes: *16
1 -> pcie gen speed:4, pcie lanes: *16
Then if we have a system only have the capbility:
pcie gen speed: 3, pcie lanes: *8,
we will override dpm 1 to pcie gen speed 3, pcie lanes *8.
But the code skips the dpm 0 configuration.
So the real pcie dpm parameters are:
0 -> pcie gen speed:1, pcie lanes: *16
1 -> pcie gen speed:3, pcie lanes: *8
Then the wrong pcie lanes will be toggled.
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay/vega20_ppt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/vega20_ppt.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c index 3fc6ad088e19..bebf38ca4be7 100644 --- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c +++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c @@ -3157,6 +3157,28 @@ static int vega20_set_df_cstate(struct smu_context *smu, return smu_send_smc_msg_with_param(smu, SMU_MSG_DFCstateControl, state); } +static int vega20_update_pcie_parameters(struct smu_context *smu, + uint32_t pcie_gen_cap, + uint32_t pcie_width_cap) +{ + PPTable_t *pptable = smu->smu_table.driver_pptable; + int ret, i; + uint32_t smu_pcie_arg; + + for (i = 0; i < NUM_LINK_LEVELS; i++) { + smu_pcie_arg = (i << 16) | + ((pptable->PcieGenSpeed[i] <= pcie_gen_cap) ? (pptable->PcieGenSpeed[i] << 8) : + (pcie_gen_cap << 8)) | ((pptable->PcieLaneCount[i] <= pcie_width_cap) ? + pptable->PcieLaneCount[i] : pcie_width_cap); + ret = smu_send_smc_msg_with_param(smu, + SMU_MSG_OverridePcieParameters, + smu_pcie_arg); + } + + return ret; +} + + static const struct pptable_funcs vega20_ppt_funcs = { .tables_init = vega20_tables_init, .alloc_dpm_context = vega20_allocate_dpm_context, @@ -3201,6 +3223,7 @@ static const struct pptable_funcs vega20_ppt_funcs = { .set_watermarks_table = vega20_set_watermarks_table, .get_thermal_temperature_range = vega20_get_thermal_temperature_range, .set_df_cstate = vega20_set_df_cstate, + .update_pcie_parameters = vega20_update_pcie_parameters }; void vega20_set_ppt_funcs(struct smu_context *smu) |