* amdgpu_legacy_dpm_compute_clocks() needs lock * protect irq work handler * fix dpm_enabled usage
commit 91dcc66b34beb72dde8412421bdc1b4cd40e4fb8 upstream
v2: fix clang build, integrate Lijo's comments (Alex)
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2524 Fixes: 3712e7a49459 ("drm/amd/pm: unified lock protections in amdgpu_dpm.c") Tested-by: Maciej S. Szmigiero mail@maciej.szmigiero.name # on Oland PRO Signed-off-by: chr[] chris@rudorff.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry picked from commit a940d204d1fddd7fd867a9b6f83030671f83978b) (cherry picked from commit 111735ad5bb76d5f9cc05c63a45190fffdabb412) --- drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c | 25 +++++++++++++----- .../gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c | 8 ++++-- drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c | 26 ++++++++++++++----- 3 files changed, 45 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c index c8586cb7d0fe..4d193313a6d6 100644 --- a/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/kv_dpm.c @@ -3043,6 +3043,7 @@ static int kv_dpm_hw_init(void *handle) if (!amdgpu_dpm) return 0;
+ mutex_lock(&adev->pm.mutex); kv_dpm_setup_asic(adev); ret = kv_dpm_enable(adev); if (ret) @@ -3050,6 +3051,8 @@ static int kv_dpm_hw_init(void *handle) else adev->pm.dpm_enabled = true; amdgpu_legacy_dpm_compute_clocks(adev); + mutex_unlock(&adev->pm.mutex); + return ret; }
@@ -3067,32 +3070,42 @@ static int kv_dpm_suspend(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ cancel_work_sync(&adev->pm.dpm.thermal.work); + if (adev->pm.dpm_enabled) { + mutex_lock(&adev->pm.mutex); + adev->pm.dpm_enabled = false; /* disable dpm */ kv_dpm_disable(adev); /* reset the power state */ adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps; + mutex_unlock(&adev->pm.mutex); } return 0; }
static int kv_dpm_resume(void *handle) { - int ret; + int ret = 0; struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- if (adev->pm.dpm_enabled) { + if (!amdgpu_dpm) + return 0; + + if (!adev->pm.dpm_enabled) { + mutex_lock(&adev->pm.mutex); /* asic init will reset to the boot state */ kv_dpm_setup_asic(adev); ret = kv_dpm_enable(adev); - if (ret) + if (ret) { adev->pm.dpm_enabled = false; - else + } else { adev->pm.dpm_enabled = true; - if (adev->pm.dpm_enabled) amdgpu_legacy_dpm_compute_clocks(adev); + } + mutex_unlock(&adev->pm.mutex); } - return 0; + return ret; }
static bool kv_dpm_is_idle(void *handle) 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 60377747bab4..48ad413d72af 100644 --- a/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/legacy_dpm.c @@ -1018,9 +1018,12 @@ void amdgpu_dpm_thermal_work_handler(struct work_struct *work) enum amd_pm_state_type dpm_state = POWER_STATE_TYPE_INTERNAL_THERMAL; int temp, size = sizeof(temp);
- if (!adev->pm.dpm_enabled) - return; + mutex_lock(&adev->pm.mutex);
+ if (!adev->pm.dpm_enabled) { + mutex_unlock(&adev->pm.mutex); + return; + } if (!pp_funcs->read_sensor(adev->powerplay.pp_handle, AMDGPU_PP_SENSOR_GPU_TEMP, (void *)&temp, @@ -1042,4 +1045,5 @@ void amdgpu_dpm_thermal_work_handler(struct work_struct *work) adev->pm.dpm.state = dpm_state;
amdgpu_legacy_dpm_compute_clocks(adev->powerplay.pp_handle); + mutex_unlock(&adev->pm.mutex); } diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c index 99dde52a4290..e7b1fa2feb92 100644 --- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c +++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c @@ -7789,6 +7789,7 @@ static int si_dpm_hw_init(void *handle) if (!amdgpu_dpm) return 0;
+ mutex_lock(&adev->pm.mutex); si_dpm_setup_asic(adev); ret = si_dpm_enable(adev); if (ret) @@ -7796,6 +7797,7 @@ static int si_dpm_hw_init(void *handle) else adev->pm.dpm_enabled = true; amdgpu_legacy_dpm_compute_clocks(adev); + mutex_unlock(&adev->pm.mutex); return ret; }
@@ -7813,32 +7815,44 @@ static int si_dpm_suspend(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ cancel_work_sync(&adev->pm.dpm.thermal.work); + if (adev->pm.dpm_enabled) { + mutex_lock(&adev->pm.mutex); + adev->pm.dpm_enabled = false; /* disable dpm */ si_dpm_disable(adev); /* reset the power state */ adev->pm.dpm.current_ps = adev->pm.dpm.requested_ps = adev->pm.dpm.boot_ps; + mutex_unlock(&adev->pm.mutex); } + return 0; }
static int si_dpm_resume(void *handle) { - int ret; + int ret = 0; struct amdgpu_device *adev = (struct amdgpu_device *)handle;
- if (adev->pm.dpm_enabled) { + if (!amdgpu_dpm) + return 0; + + if (!adev->pm.dpm_enabled) { /* asic init will reset to the boot state */ + mutex_lock(&adev->pm.mutex); si_dpm_setup_asic(adev); ret = si_dpm_enable(adev); - if (ret) + if (ret) { adev->pm.dpm_enabled = false; - else + } else { adev->pm.dpm_enabled = true; - if (adev->pm.dpm_enabled) amdgpu_legacy_dpm_compute_clocks(adev); + } + mutex_unlock(&adev->pm.mutex); } - return 0; + + return ret; }
static bool si_dpm_is_idle(void *handle)