[PATCH 4/7] drm/amd/pm: correct the fan speed RPM retrieving
Chen, Guchun
Guchun.Chen at amd.com
Wed Jul 7 04:58:28 UTC 2021
[Public]
A comment inline.
Regards,
Guchun
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Evan Quan
Sent: Wednesday, July 7, 2021 9:57 AM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Quan, Evan <Evan.Quan at amd.com>
Subject: [PATCH 4/7] drm/amd/pm: correct the fan speed RPM retrieving
The relationship "PWM = RPM / smu->fan_max_rpm" between fan speed PWM and RPM is not true for SMU11 ASICs. So, we need a new way to retrieving the fan speed RPM.
Change-Id: Ife4298c8b7ec93ef023a7da27d59654e0444e044
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
.../include/asic_reg/thm/thm_11_0_2_offset.h | 3 ++
drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h | 5 ++++
drivers/gpu/drm/amd/pm/inc/smu_v11_0.h | 3 ++
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 7 ++---
.../gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c | 24 ++++++++++++++++
.../gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 24 ++++++++++++++++
.../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 21 ++++++++++++++
.../gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 28 +++++++++++++++++++
8 files changed, 110 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_offset.h b/drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_offset.h
index eca96abef445..8474f419caa5 100644
--- a/drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_offset.h
+++ b/drivers/gpu/drm/amd/include/asic_reg/thm/thm_11_0_2_offset.h
@@ -38,6 +38,9 @@
#define mmCG_TACH_CTRL 0x006a
#define mmCG_TACH_CTRL_BASE_IDX 0
+#define mmCG_TACH_STATUS 0x006b
+#define mmCG_TACH_STATUS_BASE_IDX 0
+
#define mmTHM_THERMAL_INT_ENA 0x000a
#define mmTHM_THERMAL_INT_ENA_BASE_IDX 0
#define mmTHM_THERMAL_INT_CTRL 0x000b
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index fa585f0be530..db5123fc6042 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -726,6 +726,11 @@ struct pptable_funcs {
*/
int (*get_fan_speed_percent)(struct smu_context *smu, uint32_t *speed);
+ /**
+ * @get_fan_speed_rpm: Get the current fan speed in rpm.
+ */
+ int (*get_fan_speed_rpm)(struct smu_context *smu, uint32_t *speed);
+
/**
* @set_watermarks_table: Configure and upload the watermarks tables to
* the SMU.
diff --git a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
index 8e0f8e9a1665..05c8fc8fc3f9 100644
--- a/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
+++ b/drivers/gpu/drm/amd/pm/inc/smu_v11_0.h
@@ -229,6 +229,9 @@ int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu, int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
uint32_t *speed);
+int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu,
+ uint32_t *speed);
+
int smu_v11_0_set_xgmi_pstate(struct smu_context *smu,
uint32_t pstate);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 9a25443988e3..54fb3d7d23ee 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -2614,17 +2614,14 @@ static int smu_get_fan_speed_rpm(void *handle, uint32_t *speed) {
struct smu_context *smu = handle;
int ret = 0;
- u32 percent;
if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
return -EOPNOTSUPP;
mutex_lock(&smu->mutex);
- if (smu->ppt_funcs->get_fan_speed_percent) {
- ret = smu->ppt_funcs->get_fan_speed_percent(smu, &percent);
- *speed = percent * smu->fan_max_rpm / 100;
- }
+ if (smu->ppt_funcs->get_fan_speed_rpm)
+ ret = smu->ppt_funcs->get_fan_speed_rpm(smu, speed);
mutex_unlock(&smu->mutex);
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
index 4a6544b8e05e..e3303c8dcaca 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
@@ -1162,6 +1162,29 @@ static int arcturus_read_sensor(struct smu_context *smu,
return ret;
}
+static int arcturus_get_fan_speed_rpm(struct smu_context *smu,
+ uint32_t *speed)
+{
+ int ret = 0;
+
+ if (!speed)
+ return -EINVAL;
+
+ switch (smu_v11_0_get_fan_control_mode(smu)) {
+ case AMD_FAN_CTRL_AUTO:
+ ret = arcturus_get_smu_metrics_data(smu,
+ METRICS_CURR_FANSPEED,
+ speed);
+ break;
+ default:
+ ret = smu_v11_0_get_fan_speed_rpm(smu,
+ speed);
+ break;
+ }
+
+ return ret;
+}
+
static int arcturus_get_fan_parameters(struct smu_context *smu) {
PPTable_t *pptable = smu->smu_table.driver_pptable; @@ -2246,6 +2269,7 @@ static const struct pptable_funcs arcturus_ppt_funcs = {
.force_clk_levels = arcturus_force_clk_levels,
.read_sensor = arcturus_read_sensor,
.get_fan_speed_percent = smu_v11_0_get_fan_speed_percent,
+ .get_fan_speed_rpm = arcturus_get_fan_speed_rpm,
.get_power_profile_mode = arcturus_get_power_profile_mode,
.set_power_profile_mode = arcturus_set_power_profile_mode,
.set_performance_level = arcturus_set_performance_level, diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
index 2ddf35788672..7dce5ea7c1a0 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c
@@ -1668,6 +1668,29 @@ static bool navi10_is_dpm_running(struct smu_context *smu)
return !!(feature_enabled & SMC_DPM_FEATURE); }
+static int navi10_get_fan_speed_rpm(struct smu_context *smu,
+ uint32_t *speed)
+{
+ int ret = 0;
+
+ if (!speed)
+ return -EINVAL;
+
+ switch (smu_v11_0_get_fan_control_mode(smu)) {
+ case AMD_FAN_CTRL_AUTO:
+ ret = navi10_get_smu_metrics_data(smu,
+ METRICS_CURR_FANSPEED,
+ speed);
+ break;
+ default:
+ ret = smu_v11_0_get_fan_speed_rpm(smu,
+ speed);
+ break;
+ }
+
+ return ret;
+}
+
static int navi10_get_fan_parameters(struct smu_context *smu) {
PPTable_t *pptable = smu->smu_table.driver_pptable; @@ -3182,6 +3205,7 @@ static const struct pptable_funcs navi10_ppt_funcs = {
.notify_smc_display_config = navi10_notify_smc_display_config,
.is_dpm_running = navi10_is_dpm_running,
.get_fan_speed_percent = smu_v11_0_get_fan_speed_percent,
+ .get_fan_speed_rpm = navi10_get_fan_speed_rpm,
.get_power_profile_mode = navi10_get_power_profile_mode,
.set_power_profile_mode = navi10_set_power_profile_mode,
.set_watermarks_table = navi10_set_watermarks_table, diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
index e7686ce6744b..2f93dc4b5968 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
@@ -1355,6 +1355,26 @@ static bool sienna_cichlid_is_dpm_running(struct smu_context *smu)
return !!(feature_enabled & SMC_DPM_FEATURE); }
+static int sienna_cichlid_get_fan_speed_rpm(struct smu_context *smu,
+ uint32_t *speed)
+{
+ int ret = 0;
+
+ if (!speed)
+ return -EINVAL;
+
+ /*
+ * For Sienna_Cichlid and later, the fan speed(rpm) reported
+ * by pmfw is always trustable(even when the fan control feature
+ * disabled or 0 RPM kicked in).
+ */
+ ret = sienna_cichlid_get_smu_metrics_data(smu,
+ METRICS_CURR_FANSPEED,
+ speed);
+
+ return ret;
[Guchun] More simple if directly return function sienna_cichlid_get_smu_metrics_data, then variable 'ret' can be dropped.
+}
+
static int sienna_cichlid_get_fan_parameters(struct smu_context *smu) {
uint16_t *table_member;
@@ -3820,6 +3840,7 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
.notify_smc_display_config = sienna_cichlid_notify_smc_display_config,
.is_dpm_running = sienna_cichlid_is_dpm_running,
.get_fan_speed_percent = smu_v11_0_get_fan_speed_percent,
+ .get_fan_speed_rpm = sienna_cichlid_get_fan_speed_rpm,
.get_power_profile_mode = sienna_cichlid_get_power_profile_mode,
.set_power_profile_mode = sienna_cichlid_set_power_profile_mode,
.set_watermarks_table = sienna_cichlid_set_watermarks_table,
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
index c49683b07076..0cdf55a0dba2 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c
@@ -1284,6 +1284,34 @@ int smu_v11_0_get_fan_speed_percent(struct smu_context *smu,
return 0;
}
+int smu_v11_0_get_fan_speed_rpm(struct smu_context *smu,
+ uint32_t *speed)
+{
+ struct amdgpu_device *adev = smu->adev;
+ uint32_t tach_status, crystal_clock_freq;
+ uint64_t tmp64;
+
+ /*
+ * For pre Sienna Cichlid ASICs, the 0 RPM may be not correctly
+ * detected via register retrieving. To workaround this, we will
+ * report the fan speed as 0 RPM if user just requested such.
+ */
+ if ((smu->user_dpm_profile.custom_fan_speed & SMU_CUSTOM_FAN_SPEED_RPM)
+ && !smu->user_dpm_profile.fan_speed_rpm) {
+ *speed = 0;
+ return 0;
+ }
+
+ crystal_clock_freq = amdgpu_asic_get_xclk(adev) / 4;
+ tmp64 = (uint64_t)crystal_clock_freq * 60 * 10000;
+
+ tach_status = RREG32_SOC15(THM, 0, mmCG_TACH_STATUS);
+ do_div(tmp64, tach_status);
+ *speed = (uint32_t)tmp64;
+
+ return 0;
+}
+
int
smu_v11_0_set_fan_control_mode(struct smu_context *smu,
uint32_t mode)
--
2.29.0
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