[PATCH V3 16/17] drm/amd/pm: revise the performance level setting APIs
Evan Quan
evan.quan at amd.com
Thu Dec 2 03:09:29 UTC 2021
Avoid cross callings which make lock protection enforcement
on amdgpu_dpm_force_performance_level() impossible.
Signed-off-by: Evan Quan <evan.quan at amd.com>
Change-Id: Ie658140f40ab906ce2ec47576a086062b61076a6
---
drivers/gpu/drm/amd/pm/amdgpu_pm.c | 29 ++++++++++++++++---
.../gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c | 17 ++++++-----
.../gpu/drm/amd/pm/powerplay/amd_powerplay.c | 12 --------
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 12 --------
4 files changed, 34 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index f5c0ae032954..5e5006af6b75 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -305,6 +305,10 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
enum amd_dpm_forced_level level;
enum amd_dpm_forced_level current_level;
int ret = 0;
+ uint32_t profile_mode_mask = AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD |
+ AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK |
+ AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK |
+ AMD_DPM_FORCED_LEVEL_PROFILE_PEAK;
if (amdgpu_in_reset(adev))
return -EPERM;
@@ -358,10 +362,7 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
}
/* profile_exit setting is valid only when current mode is in profile mode */
- if (!(current_level & (AMD_DPM_FORCED_LEVEL_PROFILE_STANDARD |
- AMD_DPM_FORCED_LEVEL_PROFILE_MIN_SCLK |
- AMD_DPM_FORCED_LEVEL_PROFILE_MIN_MCLK |
- AMD_DPM_FORCED_LEVEL_PROFILE_PEAK)) &&
+ if (!(current_level & profile_mode_mask) &&
(level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT)) {
pr_err("Currently not in any profile mode!\n");
pm_runtime_mark_last_busy(ddev->dev);
@@ -369,6 +370,26 @@ static ssize_t amdgpu_set_power_dpm_force_performance_level(struct device *dev,
return -EINVAL;
}
+ if (!(current_level & profile_mode_mask) &&
+ (level & profile_mode_mask)) {
+ /* enter UMD Pstate */
+ amdgpu_device_ip_set_powergating_state(adev,
+ AMD_IP_BLOCK_TYPE_GFX,
+ AMD_PG_STATE_UNGATE);
+ amdgpu_device_ip_set_clockgating_state(adev,
+ AMD_IP_BLOCK_TYPE_GFX,
+ AMD_CG_STATE_UNGATE);
+ } else if ((current_level & profile_mode_mask) &&
+ !(level & profile_mode_mask)) {
+ /* exit UMD Pstate */
+ amdgpu_device_ip_set_clockgating_state(adev,
+ AMD_IP_BLOCK_TYPE_GFX,
+ AMD_CG_STATE_GATE);
+ amdgpu_device_ip_set_powergating_state(adev,
+ AMD_IP_BLOCK_TYPE_GFX,
+ AMD_PG_STATE_GATE);
+ }
+
if (amdgpu_dpm_force_performance_level(adev, level)) {
pm_runtime_mark_last_busy(ddev->dev);
pm_runtime_put_autosuspend(ddev->dev);
diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c
index 3c6ee493e410..9613c6181c17 100644
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c
@@ -953,6 +953,7 @@ static struct amdgpu_ps *amdgpu_dpm_pick_power_state(struct amdgpu_device *adev,
static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
{
+ const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
struct amdgpu_ps *ps;
enum amd_pm_state_type dpm_state;
int ret;
@@ -976,7 +977,7 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
else
return -EINVAL;
- if (amdgpu_dpm == 1 && adev->powerplay.pp_funcs->print_power_state) {
+ if (amdgpu_dpm == 1 && pp_funcs->print_power_state) {
printk("switching from power state:\n");
amdgpu_dpm_print_power_state(adev, adev->pm.dpm.current_ps);
printk("switching to power state:\n");
@@ -985,14 +986,14 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
/* update whether vce is active */
ps->vce_active = adev->pm.dpm.vce_active;
- if (adev->powerplay.pp_funcs->display_configuration_changed)
+ if (pp_funcs->display_configuration_changed)
amdgpu_dpm_display_configuration_changed(adev);
ret = amdgpu_dpm_pre_set_power_state(adev);
if (ret)
return ret;
- if (adev->powerplay.pp_funcs->check_state_equal) {
+ if (pp_funcs->check_state_equal) {
if (0 != amdgpu_dpm_check_state_equal(adev, adev->pm.dpm.current_ps, adev->pm.dpm.requested_ps, &equal))
equal = false;
}
@@ -1000,24 +1001,24 @@ static int amdgpu_dpm_change_power_state_locked(struct amdgpu_device *adev)
if (equal)
return 0;
- if (adev->powerplay.pp_funcs->set_power_state)
- adev->powerplay.pp_funcs->set_power_state(adev->powerplay.pp_handle);
+ if (pp_funcs->set_power_state)
+ pp_funcs->set_power_state(adev->powerplay.pp_handle);
amdgpu_dpm_post_set_power_state(adev);
adev->pm.dpm.current_active_crtcs = adev->pm.dpm.new_active_crtcs;
adev->pm.dpm.current_active_crtc_count = adev->pm.dpm.new_active_crtc_count;
- if (adev->powerplay.pp_funcs->force_performance_level) {
+ if (pp_funcs->force_performance_level) {
if (adev->pm.dpm.thermal_active) {
enum amd_dpm_forced_level level = adev->pm.dpm.forced_level;
/* force low perf level for thermal */
- amdgpu_dpm_force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW);
+ pp_funcs->force_performance_level(adev, AMD_DPM_FORCED_LEVEL_LOW);
/* save the user's level */
adev->pm.dpm.forced_level = level;
} else {
/* otherwise, user selected level */
- amdgpu_dpm_force_performance_level(adev, adev->pm.dpm.forced_level);
+ pp_funcs->force_performance_level(adev, adev->pm.dpm.forced_level);
}
}
diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
index d57d5c28c013..5a14ddd3ef05 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c
@@ -323,12 +323,6 @@ static void pp_dpm_en_umd_pstate(struct pp_hwmgr *hwmgr,
if (*level & profile_mode_mask) {
hwmgr->saved_dpm_level = hwmgr->dpm_level;
hwmgr->en_umd_pstate = true;
- amdgpu_device_ip_set_powergating_state(hwmgr->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_PG_STATE_UNGATE);
- amdgpu_device_ip_set_clockgating_state(hwmgr->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_CG_STATE_UNGATE);
}
} else {
/* exit umd pstate, restore level, enable gfx cg*/
@@ -336,12 +330,6 @@ static void pp_dpm_en_umd_pstate(struct pp_hwmgr *hwmgr,
if (*level == AMD_DPM_FORCED_LEVEL_PROFILE_EXIT)
*level = hwmgr->saved_dpm_level;
hwmgr->en_umd_pstate = false;
- amdgpu_device_ip_set_clockgating_state(hwmgr->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_CG_STATE_GATE);
- amdgpu_device_ip_set_powergating_state(hwmgr->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_PG_STATE_GATE);
}
}
}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index 1edc71dde3e4..e25b3b6fd22d 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -1681,12 +1681,6 @@ static int smu_enable_umd_pstate(void *handle,
smu_dpm_ctx->saved_dpm_level = smu_dpm_ctx->dpm_level;
smu_dpm_ctx->enable_umd_pstate = true;
smu_gpo_control(smu, false);
- amdgpu_device_ip_set_powergating_state(smu->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_PG_STATE_UNGATE);
- amdgpu_device_ip_set_clockgating_state(smu->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_CG_STATE_UNGATE);
smu_gfx_ulv_control(smu, false);
smu_deep_sleep_control(smu, false);
amdgpu_asic_update_umd_stable_pstate(smu->adev, true);
@@ -1700,12 +1694,6 @@ static int smu_enable_umd_pstate(void *handle,
amdgpu_asic_update_umd_stable_pstate(smu->adev, false);
smu_deep_sleep_control(smu, true);
smu_gfx_ulv_control(smu, true);
- amdgpu_device_ip_set_clockgating_state(smu->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_CG_STATE_GATE);
- amdgpu_device_ip_set_powergating_state(smu->adev,
- AMD_IP_BLOCK_TYPE_GFX,
- AMD_PG_STATE_GATE);
smu_gpo_control(smu, true);
}
}
--
2.29.0
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