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drm/amd/pm: improve the fine grain tuning function for RV/RV2/PCO 

This patch is to improve the fine grain tuning function for RV/RV2/PCO.
This patch adds two new commands: "restore" and "commit".
This function uses the pp_od_clk_voltage sysfs file to configure the min
and max value of gfx clock frequency manually or restore the default value.

Command guide:
echo "s level value" > pp_od_clk_voltage
        "s" - set the sclk frequency
        "level" - 0 or 1, "0" represents the min value,  "1" represents
        the max value
        "value" - the target value of sclk frequency, it should be limited in the
        safe range
echo "r" > pp_od_clk_voltage
        "r" - reset the sclk frequency, restore the default value instantly
echo "c" > pp_od_clk_voltage
        "c" - commit the min and max value of sclk frequency to the system
        only after the commit command, the target values set by "s" command
        will take effect.
Example:
1)change power profile from "auto" to "manual"
        $ cat power_dpm_force_performance_level
        auto
        $ echo "manual" > power_dpm_force_performance_level
        $ cat power_dpm_force_performance_level
        manual
2)check the default sclk frequency
        $ cat pp_od_clk_voltage
        OD_SCLK:
        0:        200Mhz
        1:       1400Mhz
        OD_RANGE:
        SCLK:     200MHz       1400MHz
3)use "s" -- set command to configure the min and max sclk frequency
        $ echo "s 0 600" > pp_od_clk_voltage
        $ echo "s 1 1000" > pp_od_clk_voltage
        $ echo "c" > pp_od_clk_voltage
        $ cat pp_od_clk_voltage
        OD_SCLK:
        0:        600Mhz
        1:       1000Mhz
        OD_RANGE:
        SCLK:     200MHz       1400MHz
4)use "r" -- reset command to restore the min or max sclk frequency
        $ echo "r" > pp_od_clk_voltage
        $ cat pp_od_clk_voltage
        OD_SCLK:
        0:        200Mhz
        1:       1400Mhz
        OD_RANGE:
        SCLK:     200MHz       1400MHz

Signed-off-by: Xiaojian Du <Xiaojian.Du@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiaojian Du 2020-12-18 14:32:02 +08:00 committed by Alex Deucher
parent 0e61f09af4
commit 37030aba0f
2 changed files with 98 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

114
drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.c
View File

@ -251,7 +251,7 @@ static int smu10_set_hard_min_gfxclk_by_freq(struct pp_hwmgr *hwmgr, uint32_t cl
smu10_data->gfx_actual_soft_min_freq = clock;
smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_SetHardMinGfxClk,
smu10_data->gfx_actual_soft_min_freq,
clock,
NULL);
}
return 0;
@ -948,6 +948,8 @@ static int smu10_print_clock_levels(struct pp_hwmgr *hwmgr,
struct smu10_voltage_dependency_table *mclk_table =
data->clock_vol_info.vdd_dep_on_fclk;
uint32_t i, now, size = 0;
uint32_t min_freq, max_freq = 0;
uint32_t ret = 0;
switch (type) {
case PP_SCLK:
@ -983,18 +985,28 @@ static int smu10_print_clock_levels(struct pp_hwmgr *hwmgr,
break;
case OD_SCLK:
if (hwmgr->od_enabled) {
size = sprintf(buf, "%s:\n", "OD_SCLK");
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
if (ret)
return ret;
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
if (ret)
return ret;
size = sprintf(buf, "%s:\n", "OD_SCLK");
size += sprintf(buf + size, "0: %10uMhz\n",
(data->gfx_actual_soft_min_freq > 0) ? data->gfx_actual_soft_min_freq : data->gfx_min_freq_limit/100);
size += sprintf(buf + size, "1: %10uMhz\n", data->gfx_max_freq_limit/100);
(data->gfx_actual_soft_min_freq > 0) ? data->gfx_actual_soft_min_freq : min_freq);
size += sprintf(buf + size, "1: %10uMhz\n",
(data->gfx_actual_soft_max_freq > 0) ? data->gfx_actual_soft_max_freq : max_freq);
}
break;
case OD_RANGE:
if (hwmgr->od_enabled) {
uint32_t min_freq, max_freq = 0;
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
if (ret)
return ret;
ret = smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
if (ret)
return ret;
size = sprintf(buf, "%s:\n", "OD_RANGE");
size += sprintf(buf + size, "SCLK: %7uMHz %10uMHz\n",
@ -1414,23 +1426,91 @@ static int smu10_set_fine_grain_clk_vol(struct pp_hwmgr *hwmgr,
enum PP_OD_DPM_TABLE_COMMAND type,
long *input, uint32_t size)
{
uint32_t min_freq, max_freq = 0;
struct smu10_hwmgr *smu10_data = (struct smu10_hwmgr *)(hwmgr->backend);
int ret = 0;
if (!hwmgr->od_enabled) {
pr_err("Fine grain not support\n");
return -EINVAL;
}
if (size != 2) {
pr_err("Input parameter number not correct\n");
return -EINVAL;
}
if (type == PP_OD_EDIT_SCLK_VDDC_TABLE) {
if (input[0] == 0)
smu10_set_hard_min_gfxclk_by_freq(hwmgr, input[1]);
else if (input[0] == 1)
smu10_set_soft_max_gfxclk_by_freq(hwmgr, input[1]);
else
if (size != 2) {
pr_err("Input parameter number not correct\n");
return -EINVAL;
}
if (input[0] == 0) {
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
if (input[1] < min_freq) {
pr_err("Fine grain setting minimum sclk (%ld) MHz is less than the minimum allowed (%d) MHz\n",
input[1], min_freq);
return -EINVAL;
}
smu10_data->gfx_actual_soft_min_freq = input[1];
} else if (input[0] == 1) {
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
if (input[1] > max_freq) {
pr_err("Fine grain setting maximum sclk (%ld) MHz is greater than the maximum allowed (%d) MHz\n",
input[1], max_freq);
return -EINVAL;
}
smu10_data->gfx_actual_soft_max_freq = input[1];
} else {
return -EINVAL;
}
} else if (type == PP_OD_RESTORE_DEFAULT_TABLE) {
if (size != 0) {
pr_err("Input parameter number not correct\n");
return -EINVAL;
}
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMinGfxclkFrequency, &min_freq);
smum_send_msg_to_smc(hwmgr, PPSMC_MSG_GetMaxGfxclkFrequency, &max_freq);
smu10_data->gfx_actual_soft_min_freq = min_freq;
smu10_data->gfx_actual_soft_max_freq = max_freq;
ret = smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_SetHardMinGfxClk,
min_freq,
NULL);
if (ret)
return ret;
ret = smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_SetSoftMaxGfxClk,
max_freq,
NULL);
if (ret)
return ret;
} else if (type == PP_OD_COMMIT_DPM_TABLE) {
if (size != 0) {
pr_err("Input parameter number not correct\n");
return -EINVAL;
}
if (smu10_data->gfx_actual_soft_min_freq > smu10_data->gfx_actual_soft_max_freq) {
pr_err("The setting minimun sclk (%d) MHz is greater than the setting maximum sclk (%d) MHz\n",
smu10_data->gfx_actual_soft_min_freq, smu10_data->gfx_actual_soft_max_freq);
return -EINVAL;
}
ret = smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_SetHardMinGfxClk,
smu10_data->gfx_actual_soft_min_freq,
NULL);
if (ret)
return ret;
ret = smum_send_msg_to_smc_with_parameter(hwmgr,
PPSMC_MSG_SetSoftMaxGfxClk,
smu10_data->gfx_actual_soft_max_freq,
NULL);
if (ret)
return ret;
} else {
return -EINVAL;
}
return 0;

1
drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu10_hwmgr.h
View File

@ -283,6 +283,7 @@ struct smu10_hwmgr {
uint32_t vclk_soft_min;
uint32_t dclk_soft_min;
uint32_t gfx_actual_soft_min_freq;
uint32_t gfx_actual_soft_max_freq;
uint32_t gfx_min_freq_limit;
uint32_t gfx_max_freq_limit; /* in 10Khz*/