diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 716a268256981c710a49577e1560461930c33aaa..ee3b5a8a45f01966a53c65ae76080c2843ab5fad 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -886,6 +886,7 @@ struct amdgpu_device { bool need_swiotlb; bool accel_working; struct notifier_block acpi_nb; + struct notifier_block pm_nb; struct amdgpu_i2c_chan *i2c_bus[AMDGPU_MAX_I2C_BUS]; struct debugfs_blob_wrapper debugfs_vbios_blob; struct debugfs_blob_wrapper debugfs_discovery_blob; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 2dda6ed1763372ea23273cf5a5e67adb2d597c9b..3f7995abfa83733a7a9b4892893d7a2c89fba374 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -199,6 +199,8 @@ void amdgpu_set_init_level(struct amdgpu_device *adev, } static inline void amdgpu_device_stop_pending_resets(struct amdgpu_device *adev); +static int amdgpu_device_pm_notifier(struct notifier_block *nb, unsigned long mode, + void *data); /** * DOC: pcie_replay_count @@ -4560,6 +4562,11 @@ int amdgpu_device_init(struct amdgpu_device *adev, amdgpu_device_check_iommu_direct_map(adev); + adev->pm_nb.notifier_call = amdgpu_device_pm_notifier; + r = register_pm_notifier(&adev->pm_nb); + if (r) + goto failed; + return 0; release_ras_con: @@ -4624,6 +4631,8 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev) drain_workqueue(adev->mman.bdev.wq); adev->shutdown = true; + unregister_pm_notifier(&adev->pm_nb); + /* make sure IB test finished before entering exclusive mode * to avoid preemption on IB test */ @@ -4755,6 +4764,41 @@ static int amdgpu_device_evict_resources(struct amdgpu_device *adev) /* * Suspend & resume. */ +/** + * amdgpu_device_pm_notifier - Notification block for Suspend/Hibernate events + * @nb: notifier block + * @mode: suspend mode + * @data: data + * + * This function is called when the system is about to suspend or hibernate. + * It is used to evict resources from the device before the system goes to + * sleep while there is still access to swap. + */ +static int amdgpu_device_pm_notifier(struct notifier_block *nb, unsigned long mode, + void *data) +{ + struct amdgpu_device *adev = container_of(nb, struct amdgpu_device, pm_nb); + int r; + + switch (mode) { + case PM_HIBERNATION_PREPARE: + adev->in_s4 = true; + fallthrough; + case PM_SUSPEND_PREPARE: + r = amdgpu_device_evict_resources(adev); + /* + * This is considered non-fatal at this time because + * amdgpu_device_prepare() will also fatally evict resources. + * See https://gitlab.freedesktop.org/drm/amd/-/issues/3781 + */ + if (r) + drm_warn(adev_to_drm(adev), "Failed to evict resources, freeze active processes if problems occur: %d\n", r); + break; + } + + return NOTIFY_DONE; +} + /** * amdgpu_device_prepare - prepare for device suspend * @@ -4794,7 +4838,7 @@ int amdgpu_device_prepare(struct drm_device *dev) return 0; unprepare: - adev->in_s0ix = adev->in_s3 = false; + adev->in_s0ix = adev->in_s3 = adev->in_s4 = false; return r; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 29bc10f4746b47351ef5a438f8604f30db9bfffc..62de668e9ff829bfbf54f19677824f91602372ee 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -2554,7 +2554,6 @@ static int amdgpu_pmops_freeze(struct device *dev) struct amdgpu_device *adev = drm_to_adev(drm_dev); int r; - adev->in_s4 = true; r = amdgpu_device_suspend(drm_dev, true); adev->in_s4 = false; if (r)