Re: [PATCH 1/2] dmr/amdgpu: Avoid HW GPU reset for RAS.

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On 8/28/19 5:18 PM, Kuehling, Felix wrote:
> On 2019-08-28 4:00 p.m., Andrey Grodzovsky wrote:
>> Problem:
>> Under certain conditions, when some IP bocks take a RAS error,
>> we can get into a situation where a GPU reset is not possible
>> due to issues in RAS in SMU/PSP.
>>
>> Temporary fix until proper solution in PSP/SMU is ready:
>> When uncorrectable error happens the DF will unconditionally
>> broadcast error event packets to all its clients/slave upon
>> receiving fatal error event and freeze all its outbound queues,
>> err_event_athub interrupt  will be triggered.
>> In such case and we use this interrupt
>> to issue GPU reset. THe GPU reset code is modified for such case to avoid HW
>> reset, only stops schedulers, deatches all in progress and not yet scheduled
>> job's fences, set error code on them and signals.
>> Also reject any new incoming job submissions from user space.
>> All this is done to notify the applications of the problem.
>>
>> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
>> ---
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c     |  4 ++
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 98 ++++++++++++++++++++++--------
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    |  5 ++
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c    |  6 ++
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c    | 30 +++++++--
>>    drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h    | 12 +++-
>>    drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c      | 10 +--
>>    drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c      | 24 ++++----
>>    drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c     |  5 ++
>>    drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c     | 32 +++++-----
>>    10 files changed, 164 insertions(+), 62 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
>> index 9da681e..300adb8 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
>> @@ -38,6 +38,7 @@
>>    #include "amdgpu_gmc.h"
>>    #include "amdgpu_gem.h"
>>    #include "amdgpu_display.h"
>> +#include "amdgpu_ras.h"
>>    
>>    #if defined(HAVE_DRM_FREE_LARGE)
>>    #define kvfree drm_free_large
>> @@ -1461,6 +1462,9 @@ int amdgpu_cs_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
>>    	bool reserved_buffers = false;
>>    	int i, r;
>>    
>> +	if (amdgpu_ras_intr_triggered())
>> +		return -EHWPOISON;
>> +
>>    	if (!adev->accel_working)
>>    		return -EBUSY;
>>    
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index 07a4ba0..3ecee10 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -3734,10 +3734,10 @@ static bool amdgpu_device_lock_adev(struct amdgpu_device *adev, bool trylock)
>>    	return true;
>>    }
>>    
>> -static void amdgpu_device_unlock_adev(struct amdgpu_device *adev)
>> +static void amdgpu_device_unlock_adev(struct amdgpu_device *adev, bool skip_kfd)
>>    {
>>    	/*unlock kfd: SRIOV would do it separately */
>> -	if (!amdgpu_sriov_vf(adev))
>> +	if (!amdgpu_sriov_vf(adev) && !skip_kfd)
>>                    amdgpu_amdkfd_post_reset(adev);
>>    	amdgpu_vf_error_trans_all(adev);
>>    	adev->mp1_state = PP_MP1_STATE_NONE;
>> @@ -3746,6 +3746,44 @@ static void amdgpu_device_unlock_adev(struct amdgpu_device *adev)
>>    }
>>    
>>    
>> +#define to_drm_sched_job(sched_job)		\
>> +		container_of((sched_job), struct drm_sched_job, queue_node)
>> +
>> +static void amdgpu_stop_all_jobs_on_sched(struct drm_gpu_scheduler *sched)
>> +{
>> +	struct drm_sched_job *s_job;
>> +	struct drm_sched_entity *s_entity = NULL;
>> +	int i;
>> +
>> +	/* Signal all jobs not yet scheduled */
>> +	for (i = DRM_SCHED_PRIORITY_MAX - 1; i >= DRM_SCHED_PRIORITY_MIN; i--) {
>> +		struct drm_sched_rq *rq = &sched->sched_rq[i];
>> +
>> +		if (!rq)
>> +			continue;
>> +
>> +		spin_lock(&rq->lock);
>> +		list_for_each_entry(s_entity, &rq->entities, list) {
>> +			while ((s_job = to_drm_sched_job(spsc_queue_pop(&s_entity->job_queue)))) {
>> +				struct drm_sched_fence *s_fence = s_job->s_fence;
>> +
>> +				dma_fence_signal(&s_fence->scheduled);
>> +				dma_fence_set_error(&s_fence->finished, -EHWPOISON);
>> +				dma_fence_signal(&s_fence->finished);
>> +			}
>> +		}
>> +		spin_unlock(&rq->lock);
>> +	}
>> +
>> +	/* Signal all jobs already scheduled to HW */
>> +	list_for_each_entry(s_job, &sched->ring_mirror_list, node) {
>> +		struct drm_sched_fence *s_fence = s_job->s_fence;
>> +
>> +		dma_fence_set_error(&s_fence->finished, -EHWPOISON);
>> +		dma_fence_signal(&s_fence->finished);
>> +	}
>> +}
>> +
>>    /**
>>     * amdgpu_device_gpu_recover - reset the asic and recover scheduler
>>     *
>> @@ -3765,11 +3803,12 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>>    	struct amdgpu_hive_info *hive = NULL;
>>    	struct amdgpu_device *tmp_adev = NULL;
>>    	int i, r = 0;
>> +	bool in_ras_intr = amdgpu_ras_intr_triggered();
>>    
>>    	need_full_reset = job_signaled = false;
>>    	INIT_LIST_HEAD(&device_list);
>>    
>> -	dev_info(adev->dev, "GPU reset begin!\n");
>> +	dev_info(adev->dev, "GPU %s begin!\n", in_ras_intr ? "jobs stop":"reset");
>>    
>>    	cancel_delayed_work_sync(&adev->delayed_init_work);
>>    
>> @@ -3799,7 +3838,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>>    	/* Build list of devices to reset */
>>    	if  (adev->gmc.xgmi.num_physical_nodes > 1) {
>>    		if (!hive) {
>> -			amdgpu_device_unlock_adev(adev);
>> +			amdgpu_device_unlock_adev(adev, false);
> Is there a reason why you're not using in_ras_intr here to control KFD
> post-reset?
>
> Regards,
>     Felix

It's a failure code path so I am not sure what to put here.

I can skip KFD activation here too I guess.

Andrey


>
>
>>    			return -ENODEV;
>>    		}
>>    
>> @@ -3824,7 +3863,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>>    	/* block all schedulers and reset given job's ring */
>>    	list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
>>    		/* disable ras on ALL IPs */
>> -		if (amdgpu_device_ip_need_full_reset(tmp_adev))
>> +		if (!in_ras_intr && amdgpu_device_ip_need_full_reset(tmp_adev))
>>    			amdgpu_ras_suspend(tmp_adev);
>>    
>>    		for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
>> @@ -3834,10 +3873,16 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>>    				continue;
>>    
>>    			drm_sched_stop(&ring->sched, job ? &job->base : NULL);
>> +
>> +			if (in_ras_intr)
>> +				amdgpu_stop_all_jobs_on_sched(&ring->sched);
>>    		}
>>    	}
>>    
>>    
>> +	if (in_ras_intr)
>> +		goto skip_hw_reset;
>> +
>>    	/*
>>    	 * Must check guilty signal here since after this point all old
>>    	 * HW fences are force signaled.
>> @@ -3902,34 +3947,37 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
>>    
>>    	/* Post ASIC reset for all devs .*/
>>    	list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
>> -		for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
>> -			struct amdgpu_ring *ring = tmp_adev->rings[i];
>>    
>> -			if (!ring || !ring->sched.thread)
>> -				continue;
>> +		if (!in_ras_intr) {
>> +			for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
>> +				struct amdgpu_ring *ring = tmp_adev->rings[i];
>>    
>> -			/* No point to resubmit jobs if we didn't HW reset*/
>> -			if (!tmp_adev->asic_reset_res && !job_signaled)
>> -				drm_sched_resubmit_jobs(&ring->sched);
>> +				if (!ring || !ring->sched.thread)
>> +					continue;
>>    
>> -			drm_sched_start(&ring->sched, !tmp_adev->asic_reset_res);
>> -		}
>> +				/* No point to resubmit jobs if we didn't HW reset*/
>> +				if (!tmp_adev->asic_reset_res && !job_signaled)
>> +					drm_sched_resubmit_jobs(&ring->sched);
>>    
>> -		if (!amdgpu_device_has_dc_support(tmp_adev) && !job_signaled) {
>> -			drm_helper_resume_force_mode(tmp_adev->ddev);
>> -		}
>> +				drm_sched_start(&ring->sched, !tmp_adev->asic_reset_res);
>> +			}
>>    
>> -		tmp_adev->asic_reset_res = 0;
>> +			if (!amdgpu_device_has_dc_support(tmp_adev) && !job_signaled) {
>> +				drm_helper_resume_force_mode(tmp_adev->ddev);
>> +			}
>>    
>> -		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));
>> +			tmp_adev->asic_reset_res = 0;
>> +
>> +			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);
>> +		amdgpu_device_unlock_adev(tmp_adev, in_ras_intr);
>>    	}
>>    
>>    	if (hive)
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> index 151d7f2..757fd6d 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> @@ -40,6 +40,8 @@
>>    
>>    #include "amdgpu_amdkfd.h"
>>    
>> +#include "amdgpu_ras.h"
>> +
>>    /*
>>     * KMS wrapper.
>>     * - 3.0.0 - initial driver
>> @@ -1179,6 +1181,9 @@ amdgpu_pci_shutdown(struct pci_dev *pdev)
>>    	struct drm_device *dev = pci_get_drvdata(pdev);
>>    	struct amdgpu_device *adev = dev->dev_private;
>>    
>> +	if (amdgpu_ras_intr_triggered())
>> +		return;
>> +
>>    	/* if we are running in a VM, make sure the device
>>    	 * torn down properly on reboot/shutdown.
>>    	 * unfortunately we can't detect certain
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>> index da2143d..ced766c 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
>> @@ -1046,6 +1046,12 @@ int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv)
>>    	/* Ensure IB tests are run on ring */
>>    	flush_delayed_work(&adev->delayed_init_work);
>>    
>> +
>> +	if (amdgpu_ras_intr_triggered()) {
>> +		DRM_ERROR("RAS Intr triggered, device disabled!!");
>> +		return -EHWPOISON;
>> +	}
>> +
>>    	file_priv->driver_priv = NULL;
>>    
>>    	r = pm_runtime_get_sync(dev->dev);
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> index 2d5897a..086e6df 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
>> @@ -24,6 +24,8 @@
>>    #include <linux/debugfs.h>
>>    #include <linux/list.h>
>>    #include <linux/module.h>
>> +#include <linux/reboot.h>
>> +#include <linux/syscalls.h>
>>    #include "amdgpu.h"
>>    #include "amdgpu_ras.h"
>>    #include "amdgpu_atomfirmware.h"
>> @@ -64,6 +66,9 @@ const char *ras_block_string[] = {
>>    /* inject address is 52 bits */
>>    #define	RAS_UMC_INJECT_ADDR_LIMIT	(0x1ULL << 52)
>>    
>> +
>> +atomic_t amdgpu_ras_in_intr = ATOMIC_INIT(0);
>> +
>>    static int amdgpu_ras_reserve_vram(struct amdgpu_device *adev,
>>    		uint64_t offset, uint64_t size,
>>    		struct amdgpu_bo **bo_ptr);
>> @@ -80,7 +85,7 @@ static ssize_t amdgpu_ras_debugfs_read(struct file *f, char __user *buf,
>>    	ssize_t s;
>>    	char val[128];
>>    
>> -	if (amdgpu_ras_error_query(obj->adev, &info))
>> +	if (amdgpu_ras_error_query(obj->adev, &info, false))
>>    		return -EINVAL;
>>    
>>    	s = snprintf(val, sizeof(val), "%s: %lu\n%s: %lu\n",
>> @@ -188,6 +193,10 @@ static int amdgpu_ras_debugfs_ctrl_parse_data(struct file *f,
>>    
>>    	return 0;
>>    }
>> +
>> +static struct ras_manager *amdgpu_ras_find_obj(struct amdgpu_device *adev,
>> +		struct ras_common_if *head);
>> +
>>    /**
>>     * DOC: AMDGPU RAS debugfs control interface
>>     *
>> @@ -304,7 +313,7 @@ static ssize_t amdgpu_ras_sysfs_read(struct device *dev,
>>    		.head = obj->head,
>>    	};
>>    
>> -	if (amdgpu_ras_error_query(obj->adev, &info))
>> +	if (amdgpu_ras_error_query(obj->adev, &info, false))
>>    		return -EINVAL;
>>    
>>    	return snprintf(buf, PAGE_SIZE, "%s: %lu\n%s: %lu\n",
>> @@ -591,7 +600,7 @@ static int amdgpu_ras_enable_all_features(struct amdgpu_device *adev,
>>    
>>    /* query/inject/cure begin */
>>    int amdgpu_ras_error_query(struct amdgpu_device *adev,
>> -		struct ras_query_if *info)
>> +		struct ras_query_if *info, bool print)
>>    {
>>    	struct ras_manager *obj = amdgpu_ras_find_obj(adev, &info->head);
>>    	struct ras_err_data err_data = {0, 0, 0, NULL};
>> @@ -627,12 +636,14 @@ int amdgpu_ras_error_query(struct amdgpu_device *adev,
>>    	info->ue_count = obj->err_data.ue_count;
>>    	info->ce_count = obj->err_data.ce_count;
>>    
>> -	if (err_data.ce_count)
>> +	if (err_data.ce_count || print) {
>>    		dev_info(adev->dev, "%ld correctable errors detected in %s block\n",
>>    			 obj->err_data.ce_count, ras_block_str(info->head.block));
>> -	if (err_data.ue_count)
>> +	}
>> +	if (err_data.ue_count || print) {
>>    		dev_info(adev->dev, "%ld uncorrectable errors detected in %s block\n",
>>    			 obj->err_data.ue_count, ras_block_str(info->head.block));
>> +	}
>>    
>>    	return 0;
>>    }
>> @@ -702,7 +713,7 @@ int amdgpu_ras_query_error_count(struct amdgpu_device *adev,
>>    			.head = obj->head,
>>    		};
>>    
>> -		if (amdgpu_ras_error_query(adev, &info))
>> +		if (amdgpu_ras_error_query(adev, &info, true))
>>    			return -EINVAL;
>>    
>>    		data.ce_count += info.ce_count;
>> @@ -1718,3 +1729,10 @@ int amdgpu_ras_fini(struct amdgpu_device *adev)
>>    
>>    	return 0;
>>    }
>> +
>> +void amdgpu_ras_global_ras_isr(struct amdgpu_device *adev)
>> +{
>> +	if (atomic_cmpxchg(&amdgpu_ras_in_intr, 0, 1) == 0) {
>> +		DRM_WARN("RAS event of type ERREVENT_ATHUB_INTERRUPT detected! Stopping all GPU jobs.\n");
>> +	}
>> +}
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
>> index 5a0df73..c0e22af 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
>> @@ -587,7 +587,7 @@ void amdgpu_ras_debugfs_remove(struct amdgpu_device *adev,
>>    		struct ras_common_if *head);
>>    
>>    int amdgpu_ras_error_query(struct amdgpu_device *adev,
>> -		struct ras_query_if *info);
>> +		struct ras_query_if *info, bool print);
>>    
>>    int amdgpu_ras_error_inject(struct amdgpu_device *adev,
>>    		struct ras_inject_if *info);
>> @@ -600,4 +600,14 @@ int amdgpu_ras_interrupt_remove_handler(struct amdgpu_device *adev,
>>    
>>    int amdgpu_ras_interrupt_dispatch(struct amdgpu_device *adev,
>>    		struct ras_dispatch_if *info);
>> +
>> +extern atomic_t amdgpu_ras_in_intr;
>> +
>> +static inline bool amdgpu_ras_intr_triggered(void)
>> +{
>> +	return !!atomic_read(&amdgpu_ras_in_intr);
>> +}
>> +
>> +void amdgpu_ras_global_ras_isr(struct amdgpu_device *adev);
>> +
>>    #endif
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
>> index b2c86a0..e7a83f6 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
>> @@ -5669,10 +5669,12 @@ static int gfx_v9_0_process_ras_data_cb(struct amdgpu_device *adev,
>>    		struct amdgpu_iv_entry *entry)
>>    {
>>    	/* TODO ue will trigger an interrupt. */
>> -	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>> -	if (adev->gfx.funcs->query_ras_error_count)
>> -		adev->gfx.funcs->query_ras_error_count(adev, err_data);
>> -	amdgpu_ras_reset_gpu(adev, 0);
>> +	if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) {
>> +		kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>> +		if (adev->gfx.funcs->query_ras_error_count)
>> +			adev->gfx.funcs->query_ras_error_count(adev, err_data);
>> +		amdgpu_ras_reset_gpu(adev, 0);
>> +	}
>>    	return AMDGPU_RAS_SUCCESS;
>>    }
>>    
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> index 43b4fbc..87a66c2 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> @@ -243,18 +243,20 @@ static int gmc_v9_0_process_ras_data_cb(struct amdgpu_device *adev,
>>    		struct ras_err_data *err_data,
>>    		struct amdgpu_iv_entry *entry)
>>    {
>> -	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>> -	if (adev->umc.funcs->query_ras_error_count)
>> -		adev->umc.funcs->query_ras_error_count(adev, err_data);
>> -	/* umc query_ras_error_address is also responsible for clearing
>> -	 * error status
>> -	 */
>> -	if (adev->umc.funcs->query_ras_error_address)
>> -		adev->umc.funcs->query_ras_error_address(adev, err_data);
>> +	if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) {
>> +		kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>> +		if (adev->umc.funcs->query_ras_error_count)
>> +			adev->umc.funcs->query_ras_error_count(adev, err_data);
>> +		/* umc query_ras_error_address is also responsible for clearing
>> +		 * error status
>> +		 */
>> +		if (adev->umc.funcs->query_ras_error_address)
>> +			adev->umc.funcs->query_ras_error_address(adev, err_data);
>>    
>> -	/* only uncorrectable error needs gpu reset */
>> -	if (err_data->ue_count)
>> -		amdgpu_ras_reset_gpu(adev, 0);
>> +		/* only uncorrectable error needs gpu reset */
>> +		if (err_data->ue_count)
>> +			amdgpu_ras_reset_gpu(adev, 0);
>> +	}
>>    
>>    	return AMDGPU_RAS_SUCCESS;
>>    }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
>> index 367f9d6..545990c 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
>> @@ -30,6 +30,7 @@
>>    #include "nbio/nbio_7_4_0_smn.h"
>>    #include "ivsrcid/nbio/irqsrcs_nbif_7_4.h"
>>    #include <uapi/linux/kfd_ioctl.h>
>> +#include "amdgpu_ras.h"
>>    
>>    #define smnNBIF_MGCG_CTRL_LCLK	0x1013a21c
>>    
>> @@ -329,6 +330,8 @@ static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device
>>    						BIF_DOORBELL_INT_CNTL,
>>    						RAS_CNTLR_INTERRUPT_CLEAR, 1);
>>    		WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
>> +
>> +		amdgpu_ras_global_ras_isr(adev);
>>    	}
>>    }
>>    
>> @@ -344,6 +347,8 @@ static void nbio_v7_4_handle_ras_err_event_athub_intr_no_bifring(struct amdgpu_d
>>    						BIF_DOORBELL_INT_CNTL,
>>    						RAS_ATHUB_ERR_EVENT_INTERRUPT_CLEAR, 1);
>>    		WREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL, bif_doorbell_intr_cntl);
>> +
>> +		amdgpu_ras_global_ras_isr(adev);
>>    	}
>>    }
>>    
>> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
>> index 956432f..438e504 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
>> @@ -1972,24 +1972,26 @@ static int sdma_v4_0_process_ras_data_cb(struct amdgpu_device *adev,
>>    	uint32_t err_source;
>>    	int instance;
>>    
>> -	instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
>> -	if (instance < 0)
>> -		return 0;
>> +	if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) {
>> +		instance = sdma_v4_0_irq_id_to_seq(entry->client_id);
>> +		if (instance < 0)
>> +			return 0;
>>    
>> -	switch (entry->src_id) {
>> -	case SDMA0_4_0__SRCID__SDMA_SRAM_ECC:
>> -		err_source = 0;
>> -		break;
>> -	case SDMA0_4_0__SRCID__SDMA_ECC:
>> -		err_source = 1;
>> -		break;
>> -	default:
>> -		return 0;
>> -	}
>> +		switch (entry->src_id) {
>> +		case SDMA0_4_0__SRCID__SDMA_SRAM_ECC:
>> +			err_source = 0;
>> +			break;
>> +		case SDMA0_4_0__SRCID__SDMA_ECC:
>> +			err_source = 1;
>> +			break;
>> +		default:
>> +			return 0;
>> +		}
>>    
>> -	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>> +		kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
>>    
>> -	amdgpu_ras_reset_gpu(adev, 0);
>> +		amdgpu_ras_reset_gpu(adev, 0);
>> +	}
>>    
>>    	return AMDGPU_RAS_SUCCESS;
>>    }
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