From: Darren Powell darren.powell@amd.com
[ Upstream commit ceb180361e3851007547c55035cd1de03f108f75 ]
[v2] simplified fix after Lijo's feedback removed clocks.num_levels from calculation of loop count removed unsafe accesses to shim table freq_values retained corner case output only min,now if clocks.num_levels == 1 && now > min
[v1] added a check to populate and use SCLK shim table freq_values only if using dpm_level == AMD_DPM_FORCED_LEVEL_MANUAL or AMD_DPM_FORCED_LEVEL_PERF_DETERMINISM removed clocks.num_levels from calculation of shim table size removed unsafe accesses to shim table freq_values output gfx_table values if using other dpm levels added check for freq_match when using freq_values for when now == min_clk
== Test == LOGFILE=aldebaran-sclk.test.log AMDGPU_PCI_ADDR=`lspci -nn | grep "VGA|Display" | cut -d " " -f 1` AMDGPU_HWMON=`ls -la /sys/class/hwmon | grep $AMDGPU_PCI_ADDR | awk '{print $9}'` HWMON_DIR=/sys/class/hwmon/${AMDGPU_HWMON}
lspci -nn | grep "VGA|Display" > $LOGFILE FILES="pp_od_clk_voltage pp_dpm_sclk"
for f in $FILES do echo === $f === >> $LOGFILE cat $HWMON_DIR/device/$f >> $LOGFILE done cat $LOGFILE
Signed-off-by: Darren Powell darren.powell@amd.com Reviewed-by: Kenneth Feng kenneth.feng@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../drm/amd/pm/swsmu/smu13/aldebaran_ppt.c | 34 +++++++------------ 1 file changed, 12 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c index 7f998f24af81..b57750cb27c4 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c @@ -733,7 +733,7 @@ static int aldebaran_print_clk_levels(struct smu_context *smu, struct smu_13_0_dpm_table *single_dpm_table; struct smu_dpm_context *smu_dpm = &smu->smu_dpm; struct smu_13_0_dpm_context *dpm_context = NULL; - uint32_t display_levels; + int display_levels; uint32_t freq_values[3] = {0}; uint32_t min_clk, max_clk;
@@ -765,7 +765,7 @@ static int aldebaran_print_clk_levels(struct smu_context *smu, return ret; }
- display_levels = clocks.num_levels; + display_levels = (clocks.num_levels == 1) ? 1 : 2;
min_clk = pstate_table->gfxclk_pstate.curr.min; max_clk = pstate_table->gfxclk_pstate.curr.max; @@ -775,30 +775,20 @@ static int aldebaran_print_clk_levels(struct smu_context *smu,
/* fine-grained dpm has only 2 levels */ if (now > min_clk && now < max_clk) { - display_levels = clocks.num_levels + 1; + display_levels++; freq_values[2] = max_clk; freq_values[1] = now; }
- /* - * For DPM disabled case, there will be only one clock level. - * And it's safe to assume that is always the current clock. - */ - if (display_levels == clocks.num_levels) { - for (i = 0; i < clocks.num_levels; i++) - size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n", i, - freq_values[i], - (clocks.num_levels == 1) ? - "*" : - (aldebaran_freqs_in_same_level( - freq_values[i], now) ? - "*" : - "")); - } else { - for (i = 0; i < display_levels; i++) - size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n", i, - freq_values[i], i == 1 ? "*" : ""); - } + for (i = 0; i < display_levels; i++) + size += sysfs_emit_at(buf, size, "%d: %uMhz %s\n", i, + freq_values[i], + (display_levels == 1) ? + "*" : + (aldebaran_freqs_in_same_level( + freq_values[i], now) ? + "*" : + ""));
break;