Hey guys,
This patch caused some kind of reversion with smu_reset on Navi10. I'm no expert since everything I know comes from just reading through the code, so this could be some kind of intended behavior, but after this patch, if you write a pptable to the sysfs pp_table interface on navi10, then the SMU will fail to reset successfully, and the result is seemingly an unrecoverable situation. I put in a report on bugzilla with dmesg logs : https://bugs.freedesktop.org/show_bug.cgi?id=112234 Finding this change was the result of a bisect to find where the issue started, and reverting the changes to smu_hw_fini resolved the issue. Any advice on possible proper fixes? Thanks in advance, Matt On 9/2/19 9:44 PM, Quan, Evan wrote: > These are needed for smu_reset support. > > Change-Id: If29ede4b99758adb08fd4e16665f44fd893ec99b > Signed-off-by: Evan Quan <evan.q...@amd.com> > --- > drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 17 +++++++++++++++++ > drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 3 +++ > drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 10 ++++++++++ > 3 files changed, 30 insertions(+) > > diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > index d5ee13a78eb7..3cf8d944f890 100644 > --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > @@ -1286,6 +1286,11 @@ static int smu_hw_init(void *handle) > return ret; > } > > +static int smu_stop_dpms(struct smu_context *smu) > +{ > + return smu_send_smc_msg(smu, SMU_MSG_DisableAllSmuFeatures); > +} > + > static int smu_hw_fini(void *handle) > { > struct amdgpu_device *adev = (struct amdgpu_device *)handle; > @@ -1298,6 +1303,18 @@ static int smu_hw_fini(void *handle) > smu_powergate_vcn(&adev->smu, true); > } > > + ret = smu_stop_thermal_control(smu); > + if (ret) { > + pr_warn("Fail to stop thermal control!\n"); > + return ret; > + } > + > + ret = smu_stop_dpms(smu); > + if (ret) { > + pr_warn("Fail to stop Dpms!\n"); > + return ret; > + } > + > kfree(table_context->driver_pptable); > table_context->driver_pptable = NULL; > > diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > index b19224cb6d6d..8e4b0ad24712 100644 > --- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > +++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > @@ -498,6 +498,7 @@ struct smu_funcs > int (*get_current_clk_freq)(struct smu_context *smu, enum smu_clk_type > clk_id, uint32_t *value); > int (*init_max_sustainable_clocks)(struct smu_context *smu); > int (*start_thermal_control)(struct smu_context *smu); > + int (*stop_thermal_control)(struct smu_context *smu); > int (*read_sensor)(struct smu_context *smu, enum amd_pp_sensors sensor, > void *data, uint32_t *size); > int (*set_deep_sleep_dcefclk)(struct smu_context *smu, uint32_t clk); > @@ -647,6 +648,8 @@ struct smu_funcs > ((smu)->ppt_funcs->set_thermal_fan_table ? > (smu)->ppt_funcs->set_thermal_fan_table((smu)) : 0) > #define smu_start_thermal_control(smu) \ > ((smu)->funcs->start_thermal_control? > (smu)->funcs->start_thermal_control((smu)) : 0) > +#define smu_stop_thermal_control(smu) \ > + ((smu)->funcs->stop_thermal_control? > (smu)->funcs->stop_thermal_control((smu)) : 0) > #define smu_read_sensor(smu, sensor, data, size) \ > ((smu)->ppt_funcs->read_sensor? (smu)->ppt_funcs->read_sensor((smu), > (sensor), (data), (size)) : 0) > #define smu_smc_read_sensor(smu, sensor, data, size) \ > diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c > b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c > index db5e94ce54af..1a38af84394e 100644 > --- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c > +++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c > @@ -1209,6 +1209,15 @@ static int smu_v11_0_start_thermal_control(struct > smu_context *smu) > return ret; > } > > +static int smu_v11_0_stop_thermal_control(struct smu_context *smu) > +{ > + struct amdgpu_device *adev = smu->adev; > + > + WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0); > + > + return 0; > +} > + > static uint16_t convert_to_vddc(uint8_t vid) > { > return (uint16_t) ((6200 - (vid * 25)) / SMU11_VOLTAGE_SCALE); > @@ -1783,6 +1792,7 @@ static const struct smu_funcs smu_v11_0_funcs = { > .get_current_clk_freq = smu_v11_0_get_current_clk_freq, > .init_max_sustainable_clocks = smu_v11_0_init_max_sustainable_clocks, > .start_thermal_control = smu_v11_0_start_thermal_control, > + .stop_thermal_control = smu_v11_0_stop_thermal_control, > .read_sensor = smu_v11_0_read_sensor, > .set_deep_sleep_dcefclk = smu_v11_0_set_deep_sleep_dcefclk, > .display_clock_voltage_request = > smu_v11_0_display_clock_voltage_request, > _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
