return 0;
}
-/**
- * amdgpu_device_reset - reset ASIC/GPU for bare-metal or passthrough
- *
- * @adev: amdgpu device pointer
- *
- * attempt to do soft-reset or full-reset and reinitialize Asic
- * return 0 means succeeded otherwise failed
- */
-static int amdgpu_device_reset(struct amdgpu_device *adev)
-{
- bool need_full_reset, vram_lost = 0;
- int r;
-
- need_full_reset = amdgpu_device_ip_need_full_reset(adev);
-
- if (!need_full_reset) {
- amdgpu_device_ip_pre_soft_reset(adev);
- r = amdgpu_device_ip_soft_reset(adev);
- amdgpu_device_ip_post_soft_reset(adev);
- if (r || amdgpu_device_ip_check_soft_reset(adev)) {
- DRM_INFO("soft reset failed, will fallback to full reset!\n");
- need_full_reset = true;
- }
- }
-
- if (need_full_reset) {
- r = amdgpu_device_ip_suspend(adev);
-
-retry:
- r = amdgpu_asic_reset(adev);
- /* post card */
- amdgpu_atom_asic_init(adev->mode_info.atom_context);
-
- if (!r) {
- dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
- r = amdgpu_device_ip_resume_phase1(adev);
- if (r)
- goto out;
-
- vram_lost = amdgpu_device_check_vram_lost(adev);
- if (vram_lost) {
- DRM_ERROR("VRAM is lost!\n");
- atomic_inc(&adev->vram_lost_counter);
- }
-
- r = amdgpu_gtt_mgr_recover(
- &adev->mman.bdev.man[TTM_PL_TT]);
- if (r)
- goto out;
-
- r = amdgpu_device_fw_loading(adev);
- if (r)
- return r;
-
- r = amdgpu_device_ip_resume_phase2(adev);
- if (r)
- goto out;
-
- if (vram_lost)
- amdgpu_device_fill_reset_magic(adev);
- }
- }
-
-out:
- if (!r) {
- amdgpu_irq_gpu_reset_resume_helper(adev);
- r = amdgpu_ib_ring_tests(adev);
- if (r) {
- dev_err(adev->dev, "ib ring test failed (%d).\n", r);
- r = amdgpu_device_ip_suspend(adev);
- need_full_reset = true;
- goto retry;
- }
- }
-
- if (!r)
- r = amdgpu_device_recover_vram(adev);
-
- return r;
-}
/**
* amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf
return false;
}
-/**
- * amdgpu_device_gpu_recover - reset the asic and recover scheduler
- *
- * @adev: amdgpu device pointer
- * @job: which job trigger hang
- *
- * Attempt to reset the GPU if it has hung (all asics).
- * Returns 0 for success or an error on failure.
- */
-int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
- struct amdgpu_job *job)
-{
- int i, r, resched;
-
- dev_info(adev->dev, "GPU reset begin!\n");
-
- mutex_lock(&adev->lock_reset);
- atomic_inc(&adev->gpu_reset_counter);
- adev->in_gpu_reset = 1;
-
- /* Block kfd */
- amdgpu_amdkfd_pre_reset(adev);
- /* block TTM */
- resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
+static int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
+ struct amdgpu_job *job,
+ bool *need_full_reset_arg)
+{
+ int i, r = 0;
+ bool need_full_reset = *need_full_reset_arg;
/* block all schedulers and reset given job's ring */
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
amdgpu_fence_driver_force_completion(ring);
}
- if (amdgpu_sriov_vf(adev))
- r = amdgpu_device_reset_sriov(adev, job ? false : true);
- else
- r = amdgpu_device_reset(adev);
+
+
+ if (!amdgpu_sriov_vf(adev)) {
+
+ if (!need_full_reset)
+ need_full_reset = amdgpu_device_ip_need_full_reset(adev);
+
+ if (!need_full_reset) {
+ amdgpu_device_ip_pre_soft_reset(adev);
+ r = amdgpu_device_ip_soft_reset(adev);
+ amdgpu_device_ip_post_soft_reset(adev);
+ if (r || amdgpu_device_ip_check_soft_reset(adev)) {
+ DRM_INFO("soft reset failed, will fallback to full reset!\n");
+ need_full_reset = true;
+ }
+ }
+
+ if (need_full_reset)
+ r = amdgpu_device_ip_suspend(adev);
+
+ *need_full_reset_arg = need_full_reset;
+ }
+
+ return r;
+}
+
+static int amdgpu_do_asic_reset(struct amdgpu_hive_info *hive,
+ struct list_head *device_list_handle,
+ bool *need_full_reset_arg)
+{
+ struct amdgpu_device *tmp_adev = NULL;
+ bool need_full_reset = *need_full_reset_arg, vram_lost = false;
+ int r = 0;
+
+ /*
+ * ASIC reset has to be done on all HGMI hive nodes ASAP
+ * to allow proper links negotiation in FW (within 1 sec)
+ */
+ if (need_full_reset) {
+ list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+ r = amdgpu_asic_reset(tmp_adev);
+ if (r)
+ DRM_WARN("ASIC reset failed with err r, %d for drm dev, %s",
+ r, tmp_adev->ddev->unique);
+ }
+ }
+
+
+ list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+ if (need_full_reset) {
+ /* post card */
+ if (amdgpu_atom_asic_init(tmp_adev->mode_info.atom_context))
+ DRM_WARN("asic atom init failed!");
+
+ if (!r) {
+ dev_info(tmp_adev->dev, "GPU reset succeeded, trying to resume\n");
+ r = amdgpu_device_ip_resume_phase1(tmp_adev);
+ if (r)
+ goto out;
+
+ vram_lost = amdgpu_device_check_vram_lost(tmp_adev);
+ if (vram_lost) {
+ DRM_ERROR("VRAM is lost!\n");
+ atomic_inc(&tmp_adev->vram_lost_counter);
+ }
+
+ r = amdgpu_gtt_mgr_recover(
+ &tmp_adev->mman.bdev.man[TTM_PL_TT]);
+ if (r)
+ goto out;
+
+ r = amdgpu_device_fw_loading(tmp_adev);
+ if (r)
+ return r;
+
+ r = amdgpu_device_ip_resume_phase2(tmp_adev);
+ if (r)
+ goto out;
+
+ if (vram_lost)
+ amdgpu_device_fill_reset_magic(tmp_adev);
+
+ /* Update PSP FW topology after reset */
+ if (hive && tmp_adev->gmc.xgmi.num_physical_nodes > 1)
+ r = amdgpu_xgmi_update_topology(hive, tmp_adev);
+ }
+ }
+
+
+out:
+ if (!r) {
+ amdgpu_irq_gpu_reset_resume_helper(tmp_adev);
+ r = amdgpu_ib_ring_tests(tmp_adev);
+ if (r) {
+ dev_err(tmp_adev->dev, "ib ring test failed (%d).\n", r);
+ r = amdgpu_device_ip_suspend(tmp_adev);
+ need_full_reset = true;
+ r = -EAGAIN;
+ goto end;
+ }
+ }
+
+ if (!r)
+ r = amdgpu_device_recover_vram(tmp_adev);
+ else
+ tmp_adev->asic_reset_res = r;
+ }
+
+end:
+ *need_full_reset_arg = need_full_reset;
+ return r;
+}
+
+static void amdgpu_device_post_asic_reset(struct amdgpu_device *adev,
+ struct amdgpu_job *job)
+{
+ int i;
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
* or all rings (in the case @job is NULL)
* after above amdgpu_reset accomplished
*/
- if ((!job || job->base.sched == &ring->sched) && !r)
+ if ((!job || job->base.sched == &ring->sched) && !adev->asic_reset_res)
drm_sched_job_recovery(&ring->sched);
kthread_unpark(ring->sched.thread);
drm_helper_resume_force_mode(adev->ddev);
}
- ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
+ adev->asic_reset_res = 0;
+}
- if (r) {
- /* bad news, how to tell it to userspace ? */
- dev_info(adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter));
- amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
- } else {
- dev_info(adev->dev, "GPU reset(%d) succeeded!\n",atomic_read(&adev->gpu_reset_counter));
- }
+static void amdgpu_device_lock_adev(struct amdgpu_device *adev)
+{
+ mutex_lock(&adev->lock_reset);
+ atomic_inc(&adev->gpu_reset_counter);
+ adev->in_gpu_reset = 1;
+ /* Block kfd */
+ amdgpu_amdkfd_pre_reset(adev);
+}
+static void amdgpu_device_unlock_adev(struct amdgpu_device *adev)
+{
/*unlock kfd */
amdgpu_amdkfd_post_reset(adev);
amdgpu_vf_error_trans_all(adev);
adev->in_gpu_reset = 0;
mutex_unlock(&adev->lock_reset);
+}
+
+
+/**
+ * amdgpu_device_gpu_recover - reset the asic and recover scheduler
+ *
+ * @adev: amdgpu device pointer
+ * @job: which job trigger hang
+ *
+ * Attempt to reset the GPU if it has hung (all asics).
+ * Attempt to do soft-reset or full-reset and reinitialize Asic
+ * Returns 0 for success or an error on failure.
+ */
+
+int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
+ struct amdgpu_job *job)
+{
+ int r;
+ struct amdgpu_hive_info *hive = NULL;
+ bool need_full_reset = false;
+ struct amdgpu_device *tmp_adev = NULL;
+ struct list_head device_list, *device_list_handle = NULL;
+
+ INIT_LIST_HEAD(&device_list);
+
+ dev_info(adev->dev, "GPU reset begin!\n");
+
+ /*
+ * In case of XGMI hive disallow concurrent resets to be triggered
+ * by different nodes. No point also since the one node already executing
+ * reset will also reset all the other nodes in the hive.
+ */
+ hive = amdgpu_get_xgmi_hive(adev);
+ if (hive && adev->gmc.xgmi.num_physical_nodes > 1 &&
+ !mutex_trylock(&hive->hive_lock))
+ return 0;
+
+ /* Start with adev pre asic reset first for soft reset check.*/
+ amdgpu_device_lock_adev(adev);
+ r = amdgpu_device_pre_asic_reset(adev,
+ job,
+ &need_full_reset);
+ if (r) {
+ /*TODO Should we stop ?*/
+ DRM_ERROR("GPU pre asic reset failed with err, %d for drm dev, %s ",
+ r, adev->ddev->unique);
+ adev->asic_reset_res = r;
+ }
+
+ /* Build list of devices to reset */
+ if (need_full_reset && adev->gmc.xgmi.num_physical_nodes > 1) {
+ if (!hive) {
+ amdgpu_device_unlock_adev(adev);
+ return -ENODEV;
+ }
+
+ /*
+ * In case we are in XGMI hive mode device reset is done for all the
+ * nodes in the hive to retrain all XGMI links and hence the reset
+ * sequence is executed in loop on all nodes.
+ */
+ device_list_handle = &hive->device_list;
+ } else {
+ list_add_tail(&adev->gmc.xgmi.head, &device_list);
+ device_list_handle = &device_list;
+ }
+
+retry: /* Rest of adevs pre asic reset from XGMI hive. */
+ list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+
+ if (tmp_adev == adev)
+ continue;
+
+ dev_info(tmp_adev->dev, "GPU reset begin for drm dev %s!\n", adev->ddev->unique);
+
+ amdgpu_device_lock_adev(tmp_adev);
+ r = amdgpu_device_pre_asic_reset(tmp_adev,
+ NULL,
+ &need_full_reset);
+ /*TODO Should we stop ?*/
+ if (r) {
+ DRM_ERROR("GPU pre asic reset failed with err, %d for drm dev, %s ",
+ r, tmp_adev->ddev->unique);
+ tmp_adev->asic_reset_res = r;
+ }
+ }
+
+ /* Actual ASIC resets if needed.*/
+ /* TODO Implement XGMI hive reset logic for SRIOV */
+ if (amdgpu_sriov_vf(adev)) {
+ r = amdgpu_device_reset_sriov(adev, job ? false : true);
+ if (r)
+ adev->asic_reset_res = r;
+ } else {
+ r = amdgpu_do_asic_reset(hive, device_list_handle, &need_full_reset);
+ if (r && r == -EAGAIN)
+ goto retry;
+ }
+
+ /* Post ASIC reset for all devs .*/
+ list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+ amdgpu_device_post_asic_reset(tmp_adev, tmp_adev == adev ? job : NULL);
+
+ if (r) {
+ /* bad news, how to tell it to userspace ? */
+ dev_info(tmp_adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter));
+ amdgpu_vf_error_put(tmp_adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
+ } else {
+ dev_info(tmp_adev->dev, "GPU reset(%d) succeeded!\n", atomic_read(&adev->gpu_reset_counter));
+ }
+
+ amdgpu_device_unlock_adev(tmp_adev);
+ }
+
+ if (hive && adev->gmc.xgmi.num_physical_nodes > 1)
+ mutex_unlock(&hive->hive_lock);
+
+ if (r)
+ dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
return r;
}
projects / platform / kernel / linux-rpi.git / commitdiff