[PATCH v2] drm/amd/pm: Allow setting max UCLK on SMU v13.0.6
Lijo Lazar
lijo.lazar at amd.com
Fri Feb 9 07:50:39 UTC 2024
Allow reducing max UCLK in MANUAL performance level. New UCLK value
should be less than the max DPM level UCLK level value.
Ex:
echo manual > "/sys/bus/pci/devices/.../power_dpm_force_performance_level"
echo m 1 900 > "/sys/bus/pci/devices/.../pp_od_clk_voltage”
echo c > "/sys/bus/pci/devices/.../pp_od_clk_voltage”
Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
v2:
On switching perf level to auto, restore GFX and UCLK levels only if needed.
.../drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c | 122 +++++++++++++++---
1 file changed, 102 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
index 03873d784be6..6e8a7eb1864d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -1578,6 +1578,8 @@ static int smu_v13_0_6_set_performance_level(struct smu_context *smu,
struct smu_13_0_dpm_context *dpm_context = smu_dpm->dpm_context;
struct smu_13_0_dpm_table *gfx_table =
&dpm_context->dpm_tables.gfx_table;
+ struct smu_13_0_dpm_table *uclk_table =
+ &dpm_context->dpm_tables.uclk_table;
struct smu_umd_pstate_table *pstate_table = &smu->pstate_table;
int ret;
@@ -1593,17 +1595,27 @@ static int smu_v13_0_6_set_performance_level(struct smu_context *smu,
return 0;
case AMD_DPM_FORCED_LEVEL_AUTO:
- if ((gfx_table->min == pstate_table->gfxclk_pstate.curr.min) &&
- (gfx_table->max == pstate_table->gfxclk_pstate.curr.max))
- return 0;
+ if ((gfx_table->min != pstate_table->gfxclk_pstate.curr.min) ||
+ (gfx_table->max != pstate_table->gfxclk_pstate.curr.max)) {
+ ret = smu_v13_0_6_set_gfx_soft_freq_limited_range(
+ smu, gfx_table->min, gfx_table->max);
+ if (ret)
+ return ret;
- ret = smu_v13_0_6_set_gfx_soft_freq_limited_range(
- smu, gfx_table->min, gfx_table->max);
- if (ret)
- return ret;
+ pstate_table->gfxclk_pstate.curr.min = gfx_table->min;
+ pstate_table->gfxclk_pstate.curr.max = gfx_table->max;
+ }
+
+ if (uclk_table->max != pstate_table->uclk_pstate.curr.max) {
+ /* Min UCLK is not expected to be changed */
+ ret = smu_v13_0_set_soft_freq_limited_range(
+ smu, SMU_UCLK, 0, uclk_table->max);
+ if (ret)
+ return ret;
+ pstate_table->uclk_pstate.curr.max = uclk_table->max;
+ }
+ pstate_table->uclk_pstate.custom.max = 0;
- pstate_table->gfxclk_pstate.curr.min = gfx_table->min;
- pstate_table->gfxclk_pstate.curr.max = gfx_table->max;
return 0;
case AMD_DPM_FORCED_LEVEL_MANUAL:
return 0;
@@ -1626,7 +1638,8 @@ static int smu_v13_0_6_set_soft_freq_limited_range(struct smu_context *smu,
uint32_t max_clk;
int ret = 0;
- if (clk_type != SMU_GFXCLK && clk_type != SMU_SCLK)
+ if (clk_type != SMU_GFXCLK && clk_type != SMU_SCLK &&
+ clk_type != SMU_UCLK)
return -EINVAL;
if ((smu_dpm->dpm_level != AMD_DPM_FORCED_LEVEL_MANUAL) &&
@@ -1636,18 +1649,31 @@ static int smu_v13_0_6_set_soft_freq_limited_range(struct smu_context *smu,
if (smu_dpm->dpm_level == AMD_DPM_FORCED_LEVEL_MANUAL) {
if (min >= max) {
dev_err(smu->adev->dev,
- "Minimum GFX clk should be less than the maximum allowed clock\n");
+ "Minimum clk should be less than the maximum allowed clock\n");
return -EINVAL;
}
- if ((min == pstate_table->gfxclk_pstate.curr.min) &&
- (max == pstate_table->gfxclk_pstate.curr.max))
- return 0;
+ if (clk_type == SMU_GFXCLK) {
+ if ((min == pstate_table->gfxclk_pstate.curr.min) &&
+ (max == pstate_table->gfxclk_pstate.curr.max))
+ return 0;
- ret = smu_v13_0_6_set_gfx_soft_freq_limited_range(smu, min, max);
- if (!ret) {
- pstate_table->gfxclk_pstate.curr.min = min;
- pstate_table->gfxclk_pstate.curr.max = max;
+ ret = smu_v13_0_6_set_gfx_soft_freq_limited_range(
+ smu, min, max);
+ if (!ret) {
+ pstate_table->gfxclk_pstate.curr.min = min;
+ pstate_table->gfxclk_pstate.curr.max = max;
+ }
+ }
+
+ if (clk_type == SMU_UCLK) {
+ if (max == pstate_table->uclk_pstate.curr.max)
+ return 0;
+ /* Only max clock limiting is allowed for UCLK */
+ ret = smu_v13_0_set_soft_freq_limited_range(
+ smu, SMU_UCLK, 0, max);
+ if (!ret)
+ pstate_table->uclk_pstate.curr.max = max;
}
return ret;
@@ -1740,6 +1766,40 @@ static int smu_v13_0_6_usr_edit_dpm_table(struct smu_context *smu,
return -EINVAL;
}
break;
+ case PP_OD_EDIT_MCLK_VDDC_TABLE:
+ if (size != 2) {
+ dev_err(smu->adev->dev,
+ "Input parameter number not correct\n");
+ return -EINVAL;
+ }
+
+ if (!smu_cmn_feature_is_enabled(smu,
+ SMU_FEATURE_DPM_UCLK_BIT)) {
+ dev_warn(smu->adev->dev,
+ "UCLK_LIMITS setting not supported!\n");
+ return -EOPNOTSUPP;
+ }
+
+ if (input[0] == 0) {
+ dev_info(smu->adev->dev,
+ "Setting min UCLK level is not supported");
+ return -EINVAL;
+ } else if (input[0] == 1) {
+ if (input[1] > dpm_context->dpm_tables.uclk_table.max) {
+ dev_warn(
+ smu->adev->dev,
+ "Maximum UCLK (%ld) MHz specified is greater than the maximum allowed (%d) MHz\n",
+ input[1],
+ dpm_context->dpm_tables.uclk_table.max);
+ pstate_table->uclk_pstate.custom.max =
+ pstate_table->uclk_pstate.curr.max;
+ return -EINVAL;
+ }
+
+ pstate_table->uclk_pstate.custom.max = input[1];
+ }
+ break;
+
case PP_OD_RESTORE_DEFAULT_TABLE:
if (size != 0) {
dev_err(smu->adev->dev,
@@ -1750,8 +1810,19 @@ static int smu_v13_0_6_usr_edit_dpm_table(struct smu_context *smu,
min_clk = dpm_context->dpm_tables.gfx_table.min;
max_clk = dpm_context->dpm_tables.gfx_table.max;
- return smu_v13_0_6_set_soft_freq_limited_range(
+ ret = smu_v13_0_6_set_soft_freq_limited_range(
smu, SMU_GFXCLK, min_clk, max_clk);
+
+ if (ret)
+ return ret;
+
+ min_clk = dpm_context->dpm_tables.uclk_table.min;
+ max_clk = dpm_context->dpm_tables.uclk_table.max;
+ ret = smu_v13_0_6_set_soft_freq_limited_range(
+ smu, SMU_UCLK, min_clk, max_clk);
+ if (ret)
+ return ret;
+ pstate_table->uclk_pstate.custom.max = 0;
}
break;
case PP_OD_COMMIT_DPM_TABLE:
@@ -1771,8 +1842,19 @@ static int smu_v13_0_6_usr_edit_dpm_table(struct smu_context *smu,
min_clk = pstate_table->gfxclk_pstate.custom.min;
max_clk = pstate_table->gfxclk_pstate.custom.max;
- return smu_v13_0_6_set_soft_freq_limited_range(
+ ret = smu_v13_0_6_set_soft_freq_limited_range(
smu, SMU_GFXCLK, min_clk, max_clk);
+
+ if (ret)
+ return ret;
+
+ if (!pstate_table->uclk_pstate.custom.max)
+ return 0;
+
+ min_clk = pstate_table->uclk_pstate.curr.min;
+ max_clk = pstate_table->uclk_pstate.custom.max;
+ return smu_v13_0_6_set_soft_freq_limited_range(
+ smu, SMU_UCLK, min_clk, max_clk);
}
break;
default:
--
2.25.1
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