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drm/amd/powerplay: add some sysfs interfaces for powerplay.

Browse Source 
The new sysfs interfaces:
pp_num_states: Read-only, return the number of all pp states, 0 if powerplay is not available.
pp_cur_state: Read-only, return the index number of current pp state.
pp_force_state: Read-write, to write a power state index will switch to selected state forcedly and
		enable forced state mode, disable forced state mode. such as "echo >...".
pp_table: Read-write, binary output, to be used to read or write the dpm table, the maximum
		file size is 4KB of page size.
pp_dpm_sclk: Read-write, reading will return a dpm levels list, to write an index number will force
		powerplay to set the corresponding dpm level.
pp_dpm_mclk: same as sclk.
pp_dpm_pcie: same as sclk.

And add new setting "manual" to the existing interface power_dpm_force_performance_level.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Eric Huang 2015-12-11 16:24:34 -05:00 committed by Alex Deucher
parent c7e6be2303
commit f3898ea12f
5 changed files with 488 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View File

@ -1503,6 +1503,7 @@ enum amdgpu_dpm_forced_level {
AMDGPU_DPM_FORCED_LEVEL_AUTO = 0,
AMDGPU_DPM_FORCED_LEVEL_LOW = 1,
AMDGPU_DPM_FORCED_LEVEL_HIGH = 2,
AMDGPU_DPM_FORCED_LEVEL_MANUAL = 3,
};
struct amdgpu_vce_state {
@ -2014,6 +2015,7 @@ struct amdgpu_device {
/* powerplay */
struct amd_powerplay powerplay;
bool pp_enabled;
bool pp_force_state_enabled;
/* dpm */
struct amdgpu_pm pm;
@ -2301,6 +2303,21 @@ amdgpu_get_sdma_instance(struct amdgpu_ring *ring)
#define amdgpu_dpm_get_performance_level(adev) \
(adev)->powerplay.pp_funcs->get_performance_level((adev)->powerplay.pp_handle)
#define amdgpu_dpm_get_pp_num_states(adev, data) \
(adev)->powerplay.pp_funcs->get_pp_num_states((adev)->powerplay.pp_handle, data)
#define amdgpu_dpm_get_pp_table(adev, table) \
(adev)->powerplay.pp_funcs->get_pp_table((adev)->powerplay.pp_handle, table)
#define amdgpu_dpm_set_pp_table(adev, buf, size) \
(adev)->powerplay.pp_funcs->set_pp_table((adev)->powerplay.pp_handle, buf, size)
#define amdgpu_dpm_print_clock_levels(adev, type, buf) \
(adev)->powerplay.pp_funcs->print_clock_levels((adev)->powerplay.pp_handle, type, buf)
#define amdgpu_dpm_force_clock_level(adev, type, level) \
(adev)->powerplay.pp_funcs->force_clock_level((adev)->powerplay.pp_handle, type, level)
#define amdgpu_dpm_dispatch_task(adev, event_id, input, output) \
(adev)->powerplay.pp_funcs->dispatch_tasks((adev)->powerplay.pp_handle, (event_id), (input), (output))

336
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -119,7 +119,9 @@ static ssize_t amdgpu_get_dpm_forced_performance_level(struct device *dev,
level = amdgpu_dpm_get_performance_level(adev);
return snprintf(buf, PAGE_SIZE, "%s\n",
(level == AMD_DPM_FORCED_LEVEL_AUTO) ? "auto" :
(level == AMD_DPM_FORCED_LEVEL_LOW) ? "low" : "high");
(level == AMD_DPM_FORCED_LEVEL_LOW) ? "low" :
(level == AMD_DPM_FORCED_LEVEL_HIGH) ? "high" :
(level == AMD_DPM_FORCED_LEVEL_MANUAL) ? "manual" : "unknown");
} else {
enum amdgpu_dpm_forced_level level;
@ -146,6 +148,8 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
level = AMDGPU_DPM_FORCED_LEVEL_HIGH;
} else if (strncmp("auto", buf, strlen("auto")) == 0) {
level = AMDGPU_DPM_FORCED_LEVEL_AUTO;
} else if (strncmp("manual", buf, strlen("manual")) == 0) {
level = AMDGPU_DPM_FORCED_LEVEL_MANUAL;
} else {
count = -EINVAL;
goto fail;
@ -172,10 +176,293 @@ static ssize_t amdgpu_set_dpm_forced_performance_level(struct device *dev,
return count;
}
static ssize_t amdgpu_get_pp_num_states(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
struct pp_states_info data;
int i, buf_len;
if (adev->pp_enabled)
amdgpu_dpm_get_pp_num_states(adev, &data);
buf_len = snprintf(buf, PAGE_SIZE, "states: %d\n", data.nums);
for (i = 0; i < data.nums; i++)
buf_len += snprintf(buf + buf_len, PAGE_SIZE, "%d %s\n", i,
(data.states[i] == POWER_STATE_TYPE_INTERNAL_BOOT) ? "boot" :
(data.states[i] == POWER_STATE_TYPE_BATTERY) ? "battery" :
(data.states[i] == POWER_STATE_TYPE_BALANCED) ? "balanced" :
(data.states[i] == POWER_STATE_TYPE_PERFORMANCE) ? "performance" : "default");
return buf_len;
}
static ssize_t amdgpu_get_pp_cur_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
struct pp_states_info data;
enum amd_pm_state_type pm = 0;
int i = 0;
if (adev->pp_enabled) {
pm = amdgpu_dpm_get_current_power_state(adev);
amdgpu_dpm_get_pp_num_states(adev, &data);
for (i = 0; i < data.nums; i++) {
if (pm == data.states[i])
break;
}
if (i == data.nums)
i = -EINVAL;
}
return snprintf(buf, PAGE_SIZE, "%d\n", i);
}
static ssize_t amdgpu_get_pp_force_state(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
struct pp_states_info data;
enum amd_pm_state_type pm = 0;
int i;
if (adev->pp_force_state_enabled && adev->pp_enabled) {
pm = amdgpu_dpm_get_current_power_state(adev);
amdgpu_dpm_get_pp_num_states(adev, &data);
for (i = 0; i < data.nums; i++) {
if (pm == data.states[i])
break;
}
if (i == data.nums)
i = -EINVAL;
return snprintf(buf, PAGE_SIZE, "%d\n", i);
} else
return snprintf(buf, PAGE_SIZE, "\n");
}
static ssize_t amdgpu_set_pp_force_state(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
enum amd_pm_state_type state = 0;
long idx;
int ret;
if (strlen(buf) == 1)
adev->pp_force_state_enabled = false;
else {
ret = kstrtol(buf, 0, &idx);
if (ret) {
count = -EINVAL;
goto fail;
}
if (adev->pp_enabled) {
struct pp_states_info data;
amdgpu_dpm_get_pp_num_states(adev, &data);
state = data.states[idx];
/* only set user selected power states */
if (state != POWER_STATE_TYPE_INTERNAL_BOOT &&
state != POWER_STATE_TYPE_DEFAULT) {
amdgpu_dpm_dispatch_task(adev,
AMD_PP_EVENT_ENABLE_USER_STATE, &state, NULL);
adev->pp_force_state_enabled = true;
}
}
}
fail:
return count;
}
static ssize_t amdgpu_get_pp_table(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
char *table = NULL;
int size, i;
if (adev->pp_enabled)
size = amdgpu_dpm_get_pp_table(adev, &table);
else
return 0;
if (size >= PAGE_SIZE)
size = PAGE_SIZE - 1;
for (i = 0; i < size; i++) {
sprintf(buf + i, "%02x", table[i]);
}
sprintf(buf + i, "\n");
return size;
}
static ssize_t amdgpu_set_pp_table(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
if (adev->pp_enabled)
amdgpu_dpm_set_pp_table(adev, buf, count);
return count;
}
static ssize_t amdgpu_get_pp_dpm_sclk(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
ssize_t size = 0;
if (adev->pp_enabled)
size = amdgpu_dpm_print_clock_levels(adev, PP_SCLK, buf);
return size;
}
static ssize_t amdgpu_set_pp_dpm_sclk(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
int ret;
long level;
ret = kstrtol(buf, 0, &level);
if (ret) {
count = -EINVAL;
goto fail;
}
if (adev->pp_enabled)
amdgpu_dpm_force_clock_level(adev, PP_SCLK, level);
fail:
return count;
}
static ssize_t amdgpu_get_pp_dpm_mclk(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
ssize_t size = 0;
if (adev->pp_enabled)
size = amdgpu_dpm_print_clock_levels(adev, PP_MCLK, buf);
return size;
}
static ssize_t amdgpu_set_pp_dpm_mclk(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
int ret;
long level;
ret = kstrtol(buf, 0, &level);
if (ret) {
count = -EINVAL;
goto fail;
}
if (adev->pp_enabled)
amdgpu_dpm_force_clock_level(adev, PP_MCLK, level);
fail:
return count;
}
static ssize_t amdgpu_get_pp_dpm_pcie(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
ssize_t size = 0;
if (adev->pp_enabled)
size = amdgpu_dpm_print_clock_levels(adev, PP_PCIE, buf);
return size;
}
static ssize_t amdgpu_set_pp_dpm_pcie(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t count)
{
struct drm_device *ddev = dev_get_drvdata(dev);
struct amdgpu_device *adev = ddev->dev_private;
int ret;
long level;
ret = kstrtol(buf, 0, &level);
if (ret) {
count = -EINVAL;
goto fail;
}
if (adev->pp_enabled)
amdgpu_dpm_force_clock_level(adev, PP_PCIE, level);
fail:
return count;
}
static DEVICE_ATTR(power_dpm_state, S_IRUGO | S_IWUSR, amdgpu_get_dpm_state, amdgpu_set_dpm_state);
static DEVICE_ATTR(power_dpm_force_performance_level, S_IRUGO | S_IWUSR,
amdgpu_get_dpm_forced_performance_level,
amdgpu_set_dpm_forced_performance_level);
static DEVICE_ATTR(pp_num_states, S_IRUGO, amdgpu_get_pp_num_states, NULL);
static DEVICE_ATTR(pp_cur_state, S_IRUGO, amdgpu_get_pp_cur_state, NULL);
static DEVICE_ATTR(pp_force_state, S_IRUGO | S_IWUSR,
amdgpu_get_pp_force_state,
amdgpu_set_pp_force_state);
static DEVICE_ATTR(pp_table, S_IRUGO | S_IWUSR,
amdgpu_get_pp_table,
amdgpu_set_pp_table);
static DEVICE_ATTR(pp_dpm_sclk, S_IRUGO | S_IWUSR,
amdgpu_get_pp_dpm_sclk,
amdgpu_set_pp_dpm_sclk);
static DEVICE_ATTR(pp_dpm_mclk, S_IRUGO | S_IWUSR,
amdgpu_get_pp_dpm_mclk,
amdgpu_set_pp_dpm_mclk);
static DEVICE_ATTR(pp_dpm_pcie, S_IRUGO | S_IWUSR,
amdgpu_get_pp_dpm_pcie,
amdgpu_set_pp_dpm_pcie);
static ssize_t amdgpu_hwmon_show_temp(struct device *dev,
struct device_attribute *attr,
@ -765,6 +1052,44 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
DRM_ERROR("failed to create device file for dpm state\n");
return ret;
}
if (adev->pp_enabled) {
ret = device_create_file(adev->dev, &dev_attr_pp_num_states);
if (ret) {
DRM_ERROR("failed to create device file pp_num_states\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_cur_state);
if (ret) {
DRM_ERROR("failed to create device file pp_cur_state\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_force_state);
if (ret) {
DRM_ERROR("failed to create device file pp_force_state\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_table);
if (ret) {
DRM_ERROR("failed to create device file pp_table\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_dpm_sclk);
if (ret) {
DRM_ERROR("failed to create device file pp_dpm_sclk\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_dpm_mclk);
if (ret) {
DRM_ERROR("failed to create device file pp_dpm_mclk\n");
return ret;
}
ret = device_create_file(adev->dev, &dev_attr_pp_dpm_pcie);
if (ret) {
DRM_ERROR("failed to create device file pp_dpm_pcie\n");
return ret;
}
}
ret = amdgpu_debugfs_pm_init(adev);
if (ret) {
DRM_ERROR("Failed to register debugfs file for dpm!\n");
@ -782,6 +1107,15 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
hwmon_device_unregister(adev->pm.int_hwmon_dev);
device_remove_file(adev->dev, &dev_attr_power_dpm_state);
device_remove_file(adev->dev, &dev_attr_power_dpm_force_performance_level);
if (adev->pp_enabled) {
device_remove_file(adev->dev, &dev_attr_pp_num_states);
device_remove_file(adev->dev, &dev_attr_pp_cur_state);
device_remove_file(adev->dev, &dev_attr_pp_force_state);
device_remove_file(adev->dev, &dev_attr_pp_table);
device_remove_file(adev->dev, &dev_attr_pp_dpm_sclk);
device_remove_file(adev->dev, &dev_attr_pp_dpm_mclk);
device_remove_file(adev->dev, &dev_attr_pp_dpm_pcie);
}
}
void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)

116
drivers/gpu/drm/amd/powerplay/amd_powerplay.c
View File

@ -433,7 +433,10 @@ enum amd_pm_state_type pp_dpm_get_current_power_state(void *handle)
case PP_StateUILabel_Performance:
return POWER_STATE_TYPE_PERFORMANCE;
default:
return POWER_STATE_TYPE_DEFAULT;
if (state->classification.flags & PP_StateClassificationFlag_Boot)
return POWER_STATE_TYPE_INTERNAL_BOOT;
else
return POWER_STATE_TYPE_DEFAULT;
}
}
@ -535,6 +538,112 @@ static int pp_dpm_get_temperature(void *handle)
return hwmgr->hwmgr_func->get_temperature(hwmgr);
}
static int pp_dpm_get_pp_num_states(void *handle,
struct pp_states_info *data)
{
struct pp_hwmgr *hwmgr;
int i;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
if (hwmgr == NULL || hwmgr->ps == NULL)
return -EINVAL;
data->nums = hwmgr->num_ps;
for (i = 0; i < hwmgr->num_ps; i++) {
struct pp_power_state *state = (struct pp_power_state *)
((unsigned long)hwmgr->ps + i * hwmgr->ps_size);
switch (state->classification.ui_label) {
case PP_StateUILabel_Battery:
data->states[i] = POWER_STATE_TYPE_BATTERY;
break;
case PP_StateUILabel_Balanced:
data->states[i] = POWER_STATE_TYPE_BALANCED;
break;
case PP_StateUILabel_Performance:
data->states[i] = POWER_STATE_TYPE_PERFORMANCE;
break;
default:
if (state->classification.flags & PP_StateClassificationFlag_Boot)
data->states[i] = POWER_STATE_TYPE_INTERNAL_BOOT;
else
data->states[i] = POWER_STATE_TYPE_DEFAULT;
}
}
return 0;
}
static int pp_dpm_get_pp_table(void *handle, char **table)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
hwmgr->hwmgr_func->get_pp_table == NULL)
return -EINVAL;
return hwmgr->hwmgr_func->get_pp_table(hwmgr, table);
}
static int pp_dpm_set_pp_table(void *handle, const char *buf, size_t size)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
hwmgr->hwmgr_func->set_pp_table == NULL)
return -EINVAL;
return hwmgr->hwmgr_func->set_pp_table(hwmgr, buf, size);
}
static int pp_dpm_force_clock_level(void *handle,
enum pp_clock_type type, int level)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
hwmgr->hwmgr_func->force_clock_level == NULL)
return -EINVAL;
return hwmgr->hwmgr_func->force_clock_level(hwmgr, type, level);
}
static int pp_dpm_print_clock_levels(void *handle,
enum pp_clock_type type, char *buf)
{
struct pp_hwmgr *hwmgr;
if (!handle)
return -EINVAL;
hwmgr = ((struct pp_instance *)handle)->hwmgr;
if (hwmgr == NULL || hwmgr->hwmgr_func == NULL ||
hwmgr->hwmgr_func->print_clock_levels == NULL)
return -EINVAL;
return hwmgr->hwmgr_func->print_clock_levels(hwmgr, type, buf);
}
const struct amd_powerplay_funcs pp_dpm_funcs = {
.get_temperature = pp_dpm_get_temperature,
.load_firmware = pp_dpm_load_fw,
@ -552,6 +661,11 @@ const struct amd_powerplay_funcs pp_dpm_funcs = {
.get_fan_control_mode = pp_dpm_get_fan_control_mode,
.set_fan_speed_percent = pp_dpm_set_fan_speed_percent,
.get_fan_speed_percent = pp_dpm_get_fan_speed_percent,
.get_pp_num_states = pp_dpm_get_pp_num_states,
.get_pp_table = pp_dpm_get_pp_table,
.set_pp_table = pp_dpm_set_pp_table,
.force_clock_level = pp_dpm_force_clock_level,
.print_clock_levels = pp_dpm_print_clock_levels,
};
static int amd_pp_instance_init(struct amd_pp_init *pp_init,

17
drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h
View File

@ -123,6 +123,7 @@ enum amd_dpm_forced_level {
AMD_DPM_FORCED_LEVEL_AUTO = 0,
AMD_DPM_FORCED_LEVEL_LOW = 1,
AMD_DPM_FORCED_LEVEL_HIGH = 2,
AMD_DPM_FORCED_LEVEL_MANUAL = 3,
};
struct amd_pp_init {
@ -225,6 +226,17 @@ enum {
PP_GROUP_MAX
};
enum pp_clock_type {
PP_SCLK,
PP_MCLK,
PP_PCIE,
};
struct pp_states_info {
uint32_t nums;
uint32_t states[16];
};
#define PP_GROUP_MASK 0xF0000000
#define PP_GROUP_SHIFT 28
@ -278,6 +290,11 @@ struct amd_powerplay_funcs {
int (*get_fan_control_mode)(void *handle);
int (*set_fan_speed_percent)(void *handle, uint32_t percent);
int (*get_fan_speed_percent)(void *handle, uint32_t *speed);
int (*get_pp_num_states)(void *handle, struct pp_states_info *data);
int (*get_pp_table)(void *handle, char **table);
int (*set_pp_table)(void *handle, const char *buf, size_t size);
int (*force_clock_level)(void *handle, enum pp_clock_type type, int level);
int (*print_clock_levels)(void *handle, enum pp_clock_type type, char *buf);
};
struct amd_powerplay {

4
drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
View File

@ -327,6 +327,10 @@ struct pp_hwmgr_func {
int (*get_dal_power_level)(struct pp_hwmgr *hwmgr,
struct amd_pp_dal_clock_info *info);
int (*power_off_asic)(struct pp_hwmgr *hwmgr);
int (*get_pp_table)(struct pp_hwmgr *hwmgr, char **table);
int (*set_pp_table)(struct pp_hwmgr *hwmgr, const char *buf, size_t size);
int (*force_clock_level)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, int level);
int (*print_clock_levels)(struct pp_hwmgr *hwmgr, enum pp_clock_type type, char *buf);
};
struct pp_table_func {