diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 46 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 |
3 files changed, 46 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index b7aad43d9ad0..8050e0960f5e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -853,6 +853,7 @@ 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 24d007715a14..e6c8426fa06e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -145,6 +145,8 @@ const char *amdgpu_asic_name[] = { }; 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 @@ -4519,6 +4521,11 @@ fence_driver_init: 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: @@ -4583,6 +4590,8 @@ 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 */ @@ -4713,6 +4722,41 @@ 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 * * @dev: drm dev pointer @@ -4751,7 +4795,7 @@ 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 a9eb0927a766..700be1ac3c64 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -2635,7 +2635,6 @@ 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); if (r) return r; |