[PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Emily Deng]

When put the IB test out of exclusive mode, and do sriov reset,
the IB test will randomly fail. As out of exclusive mode it uses
kiq to do read and write registers, but as it has world switch,
the kiq read and write time will be random, sometimes it will
beyond the MAX_KIQ_REG_WAIT and then the read or write register
will fail, which will result the IB test fail. So move the

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 211f1af..dc921d6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3156,20 +3156,19 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
 
 	/* now we are okay to resume SMC/CP/SDMA */
 	r = amdgpu_device_ip_reinit_late_sriov(adev);
-	amdgpu_virt_release_full_gpu(adev, true);
 	if (r)
 		goto error;
 
 	amdgpu_irq_gpu_reset_resume_helper(adev);
 	r = amdgpu_ib_ring_tests(adev);
 
+error:
+	amdgpu_virt_release_full_gpu(adev, true);
 	if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
 		atomic_inc(&adev->vram_lost_counter);
 		r = amdgpu_device_handle_vram_lost(adev);
 	}
 
-error:
-
 	return r;
 }
 
-- 
2.7.4

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RE: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Deng, Emily]

Ping...

> -----Original Message-----
> From: Emily Deng [mailto:Emily.Deng@amd.com]
> Sent: Wednesday, April 25, 2018 11:26 AM
> To: amd-gfx@lists.freedesktop.org
> Cc: Deng, Emily <Emily.Deng@amd.com>
> Subject: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive
> mode
> 
> When put the IB test out of exclusive mode, and do sriov reset, the IB test
> will randomly fail. As out of exclusive mode it uses kiq to do read and write
> registers, but as it has world switch, the kiq read and write time will be
> random, sometimes it will beyond the MAX_KIQ_REG_WAIT and then the
> read or write register will fail, which will result the IB test fail. So move the
> 
> Signed-off-by: Emily Deng <Emily.Deng@amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 211f1af..dc921d6 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3156,20 +3156,19 @@ static int amdgpu_device_reset_sriov(struct
> amdgpu_device *adev,
> 
>  	/* now we are okay to resume SMC/CP/SDMA */
>  	r = amdgpu_device_ip_reinit_late_sriov(adev);
> -	amdgpu_virt_release_full_gpu(adev, true);
>  	if (r)
>  		goto error;
> 
>  	amdgpu_irq_gpu_reset_resume_helper(adev);
>  	r = amdgpu_ib_ring_tests(adev);
> 
> +error:
> +	amdgpu_virt_release_full_gpu(adev, true);
>  	if (!r && adev->virt.gim_feature &
> AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
>  		atomic_inc(&adev->vram_lost_counter);
>  		r = amdgpu_device_handle_vram_lost(adev);
>  	}
> 
> -error:
> -
>  	return r;
>  }
> 
> --
> 2.7.4

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Re: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Christian König]

At least of hand sounds like it makes sense. But one comment below.

Am 26.04.2018 um 04:06 schrieb Deng, Emily:
> Ping...
>
>> -----Original Message-----
>> From: Emily Deng [mailto:Emily.Deng@amd.com]
>> Sent: Wednesday, April 25, 2018 11:26 AM
>> To: amd-gfx@lists.freedesktop.org
>> Cc: Deng, Emily <Emily.Deng@amd.com>
>> Subject: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive
>> mode
>>
>> When put the IB test out of exclusive mode, and do sriov reset, the IB test
>> will randomly fail. As out of exclusive mode it uses kiq to do read and write
>> registers, but as it has world switch, the kiq read and write time will be
>> random, sometimes it will beyond the MAX_KIQ_REG_WAIT and then the
>> read or write register will fail, which will result the IB test fail. So move the

Looks like your commit message was cut of.

With that fixed the patch is Reviewed-by: Christian König 
<christian.koenig@amd.com>.

Regards,
Christian.

>>
>> Signed-off-by: Emily Deng <Emily.Deng@amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
>>   1 file changed, 2 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index 211f1af..dc921d6 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -3156,20 +3156,19 @@ static int amdgpu_device_reset_sriov(struct
>> amdgpu_device *adev,
>>
>>   	/* now we are okay to resume SMC/CP/SDMA */
>>   	r = amdgpu_device_ip_reinit_late_sriov(adev);
>> -	amdgpu_virt_release_full_gpu(adev, true);
>>   	if (r)
>>   		goto error;
>>
>>   	amdgpu_irq_gpu_reset_resume_helper(adev);
>>   	r = amdgpu_ib_ring_tests(adev);
>>
>> +error:
>> +	amdgpu_virt_release_full_gpu(adev, true);
>>   	if (!r && adev->virt.gim_feature &
>> AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
>>   		atomic_inc(&adev->vram_lost_counter);
>>   		r = amdgpu_device_handle_vram_lost(adev);
>>   	}
>>
>> -error:
>> -
>>   	return r;
>>   }
>>
>> --
>> 2.7.4
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[PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Emily Deng]

When put the IB test out of exclusive mode, and do sriov reset,
the IB test will randomly fail. As out of exclusive mode it uses
kiq to do read and write registers, but as it has world switch,
the kiq read and write time will be random, sometimes it will
beyond the MAX_KIQ_REG_WAIT and then the read or write register
will fail, which will result the IB test fail.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f509d32..692d172 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3140,20 +3140,19 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
 
 	/* now we are okay to resume SMC/CP/SDMA */
 	r = amdgpu_device_ip_reinit_late_sriov(adev);
-	amdgpu_virt_release_full_gpu(adev, true);
 	if (r)
 		goto error;
 
 	amdgpu_irq_gpu_reset_resume_helper(adev);
 	r = amdgpu_ib_ring_tests(adev);
 
+error:
+	amdgpu_virt_release_full_gpu(adev, true);
 	if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
 		atomic_inc(&adev->vram_lost_counter);
 		r = amdgpu_device_handle_vram_lost(adev);
 	}
 
-error:
-
 	return r;
 }
 
-- 
2.7.4

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RE: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Deng, Emily]

Hi all,
    Please help review this.

Best Wishes,
Emily Deng




> -----Original Message-----
> From: amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org] On Behalf Of
> Emily Deng
> Sent: Thursday, April 26, 2018 12:07 PM
> To: amd-gfx@lists.freedesktop.org
> Cc: Deng, Emily <Emily.Deng@amd.com>
> Subject: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive
> mode
> 
> When put the IB test out of exclusive mode, and do sriov reset, the IB test
> will randomly fail. As out of exclusive mode it uses kiq to do read and write
> registers, but as it has world switch, the kiq read and write time will be
> random, sometimes it will beyond the MAX_KIQ_REG_WAIT and then the
> read or write register will fail, which will result the IB test fail.
> 
> Signed-off-by: Emily Deng <Emily.Deng@amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index f509d32..692d172 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3140,20 +3140,19 @@ static int amdgpu_device_reset_sriov(struct
> amdgpu_device *adev,
> 
>  	/* now we are okay to resume SMC/CP/SDMA */
>  	r = amdgpu_device_ip_reinit_late_sriov(adev);
> -	amdgpu_virt_release_full_gpu(adev, true);
>  	if (r)
>  		goto error;
> 
>  	amdgpu_irq_gpu_reset_resume_helper(adev);
>  	r = amdgpu_ib_ring_tests(adev);
> 
> +error:
> +	amdgpu_virt_release_full_gpu(adev, true);
>  	if (!r && adev->virt.gim_feature &
> AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
>  		atomic_inc(&adev->vram_lost_counter);
>  		r = amdgpu_device_handle_vram_lost(adev);
>  	}
> 
> -error:
> -
>  	return r;
>  }
> 
> --
> 2.7.4
> 
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> amd-gfx@lists.freedesktop.org
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RE: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

[Liu, Monk]

Reviewed-by: Monk Liu 

-----Original Message-----
From: amd-gfx [mailto:amd-gfx-bounces@lists.freedesktop.org] On Behalf Of Emily Deng
Sent: 2018年4月26日 12:07
To: amd-gfx@lists.freedesktop.org
Cc: Deng, Emily <Emily.Deng@amd.com>
Subject: [PATCH] drm/amdgpu: For sriov reset, move IB test into exclusive mode

When put the IB test out of exclusive mode, and do sriov reset, the IB test will randomly fail. As out of exclusive mode it uses kiq to do read and write registers, but as it has world switch, the kiq read and write time will be random, sometimes it will beyond the MAX_KIQ_REG_WAIT and then the read or write register will fail, which will result the IB test fail.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f509d32..692d172 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3140,20 +3140,19 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev,
 
 	/* now we are okay to resume SMC/CP/SDMA */
 	r = amdgpu_device_ip_reinit_late_sriov(adev);
-	amdgpu_virt_release_full_gpu(adev, true);
 	if (r)
 		goto error;
 
 	amdgpu_irq_gpu_reset_resume_helper(adev);
 	r = amdgpu_ib_ring_tests(adev);
 
+error:
+	amdgpu_virt_release_full_gpu(adev, true);
 	if (!r && adev->virt.gim_feature & AMDGIM_FEATURE_GIM_FLR_VRAMLOST) {
 		atomic_inc(&adev->vram_lost_counter);
 		r = amdgpu_device_handle_vram_lost(adev);
 	}
 
-error:
-
 	return r;
 }
 
--
2.7.4

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