[PATCH 1/2] drm/amdgpu: add custom power policy support in sysfs
Alex Deucher
alexdeucher at gmail.com
Tue Jan 16 15:58:55 UTC 2018
On Tue, Jan 16, 2018 at 6:50 AM, Rex Zhu <Rex.Zhu at amd.com> wrote:
> when cat pp_power_profile_mode on Vega10
> NUM MODE_NAME BUSY_SET_POINT FPS USE_RLC_BUSY MIN_ACTIVE_LEVEL
> 0 3D_FULL_SCREEN : 70 60 1 3
> 1 POWER_SAVING : 90 60 0 0
> 2 VIDEO*: 70 60 0 0
> 3 VR : 70 90 0 0
> 4 COMPUTER : 30 60 0 6
> 5 CUSTOM : 0 0 0 0
>
> the result show all the profile mode we can support and custom mode.
> user can echo the num(0-4) to pp_power_profile_mode to select the profile
> mode or can echo "5 value value value value" to enter CUSTOM mode.
> the four parameter is set_point/FPS/USER_RLC_BUSY/MIN_ACTIVE_LEVEL.
>
> Change-Id: I72634646a9a179ccd57f175b4c0b3f45e538a03f
> Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h | 8 +++
> drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 81 +++++++++++++++++++++++++-
> drivers/gpu/drm/amd/include/kgd_pp_interface.h | 11 +++-
> 3 files changed, 98 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
> index 8a8d09dd..986f1d5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dpm.h
> @@ -366,6 +366,14 @@ enum amdgpu_pcie_gen {
> (adev)->powerplay.pp_handle, virtual_addr_low, \
> virtual_addr_hi, mc_addr_low, mc_addr_hi, size)
>
> +#define amdgpu_dpm_get_power_profile_mode(adev, buf) \
> + ((adev)->powerplay.pp_funcs->get_power_profile_mode(\
> + (adev)->powerplay.pp_handle, buf))
> +
> +#define amdgpu_dpm_set_power_profile_mode(adev, parameter, size) \
> + ((adev)->powerplay.pp_funcs->set_power_profile_mode(\
> + (adev)->powerplay.pp_handle, parameter, size))
> +
> struct amdgpu_dpm {
> struct amdgpu_ps *ps;
> /* number of valid power states */
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> index e5ee7cf..662edca 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
> @@ -584,6 +584,73 @@ static ssize_t amdgpu_set_pp_mclk_od(struct device *dev,
> return count;
> }
>
> +static ssize_t amdgpu_get_pp_power_profile_mode(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct drm_device *ddev = dev_get_drvdata(dev);
> + struct amdgpu_device *adev = ddev->dev_private;
> +
> + if (adev->powerplay.pp_funcs->get_power_profile_mode)
> + return amdgpu_dpm_get_power_profile_mode(adev, buf);
> +
> + return snprintf(buf, PAGE_SIZE, "\n");
> +}
> +
> +
> +static ssize_t amdgpu_set_pp_power_profile_mode(struct device *dev,
> + struct device_attribute *attr,
> + const char *buf,
> + size_t count)
> +{
> + int ret = 0xff;
> + struct drm_device *ddev = dev_get_drvdata(dev);
> + struct amdgpu_device *adev = ddev->dev_private;
> + uint32_t parameter_size = 0;
> + long parameter[64];
> + char *sub_str, buf_cpy[128];
> + char *tmp_str;
> + uint32_t i = 0;
> + char tmp[2];
> + long int profile_mode = 0;
> + const char delimiter[3] = {' ', '\n', '\0'};
> +
> + tmp[0] = *(buf);
> + tmp[1] = '\0';
> + ret = kstrtol(tmp, 0, &profile_mode);
> + if (ret)
> + goto fail;
> +
> + if (profile_mode == PP_SMC_POWER_PROFILE_CUSTOM) {
> + if (count < 2 || count > 127)
> + return -EINVAL;
> + while (isspace(*++buf))
> + i++;
> + memcpy(buf_cpy, buf, count-i);
> + tmp_str = buf_cpy;
> + while (tmp_str[0]) {
> + sub_str = strsep(&tmp_str, delimiter);
> + ret = kstrtol(sub_str, 0, ¶meter[parameter_size]);
> + if (ret) {
> + count = -EINVAL;
> + goto fail;
> + }
> + pr_info("value is %ld \n", parameter[parameter_size]);
> + parameter_size++;
> + while (isspace(*tmp_str))
> + tmp_str++;
> + }
> + }
> + parameter[parameter_size] = profile_mode;
> + if (adev->powerplay.pp_funcs->set_power_profile_mode)
> + ret = amdgpu_dpm_set_power_profile_mode(adev, parameter, parameter_size);
> +
> + if (!ret)
> + return count;
> +fail:
> + return -EINVAL;
> +}
> +
> static ssize_t amdgpu_get_pp_power_profile(struct device *dev,
> char *buf, struct amd_pp_profile *query)
> {
> @@ -772,7 +839,9 @@ static DEVICE_ATTR(pp_gfx_power_profile, S_IRUGO | S_IWUSR,
> static DEVICE_ATTR(pp_compute_power_profile, S_IRUGO | S_IWUSR,
> amdgpu_get_pp_compute_power_profile,
> amdgpu_set_pp_compute_power_profile);
> -
> +static DEVICE_ATTR(pp_power_profile_mode, S_IRUGO | S_IWUSR,
> + amdgpu_get_pp_power_profile_mode,
> + amdgpu_set_pp_power_profile_mode);
> static ssize_t amdgpu_hwmon_show_temp(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> @@ -1405,6 +1474,14 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
> return ret;
> }
>
> + ret = device_create_file(adev->dev,
> + &dev_attr_pp_power_profile_mode);
> + if (ret) {
> + DRM_ERROR("failed to create device file "
> + "pp_power_profile_mode\n");
> + return ret;
> + }
> +
> ret = amdgpu_debugfs_pm_init(adev);
> if (ret) {
> DRM_ERROR("Failed to register debugfs file for dpm!\n");
> @@ -1440,6 +1517,8 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
> &dev_attr_pp_gfx_power_profile);
> device_remove_file(adev->dev,
> &dev_attr_pp_compute_power_profile);
> + device_remove_file(adev->dev,
> + &dev_attr_pp_power_profile_mode);
> }
>
> void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
> diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> index 0f89d2a8..a823c03 100644
> --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h
> @@ -140,7 +140,14 @@ struct amd_pp_init {
> uint32_t feature_mask;
> };
>
> -
> +enum PP_SMC_POWER_PROFILE {
We probably want to add a:
PP_SMC_POWER_PROFILE_AUTO
as well. that way when auto is selected, the driver can select the
profile dynamically based on conditions in the driver. Selecting
anything else will force that profile. With that fixed:
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> + PP_SMC_POWER_PROFILE_FULLSCREEN3D = 0x0,
> + PP_SMC_POWER_PROFILE_POWERSAVING = 0x1,
> + PP_SMC_POWER_PROFILE_VIDEO = 0x2,
> + PP_SMC_POWER_PROFILE_VR = 0x3,
> + PP_SMC_POWER_PROFILE_COMPUTE = 0x4,
> + PP_SMC_POWER_PROFILE_CUSTOM = 0x5,
> +};
>
> enum {
> PP_GROUP_UNKNOWN = 0,
> @@ -289,6 +296,8 @@ struct amd_pm_funcs {
> struct pp_display_clock_request *clock);
> int (*get_display_mode_validation_clocks)(void *handle,
> struct amd_pp_simple_clock_info *clocks);
> + int (*get_power_profile_mode)(void *handle, char *buf);
> + int (*set_power_profile_mode)(void *handle, long *input, uint32_t size);
> };
>
> #endif
> --
> 1.9.1
>
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