Re: [PATCH v7 05/16] drm/amdgpu: Handle IOMMU enabled case.

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Maybe this patch needs a better explanation how the GART and IH changes
relate to IOMMU or what's the problem this is meant to fix. Just looking
at the patch I don't see the connection. Looks like just a bunch of
refactoring to me.

Regards,
  Felix


Am 2021-05-14 um 10:41 a.m. schrieb Andrey Grodzovsky:
> Ping
>
> Andrey
>
> On 2021-05-12 10:26 a.m., Andrey Grodzovsky wrote:
>> Handle all DMA IOMMU gropup related dependencies before the
>> group is removed.
>>
>> v5: Drop IOMMU notifier and switch to lockless call to ttm_tt_unpopulate
>> v6: Drop the BO unamp list
>> v7:
>> Drop amdgpu_gart_fini
>> In amdgpu_ih_ring_fini do uncinditional  check (!ih->ring)
>> to avoid freeing uniniitalized rings.
>> Call amdgpu_ih_ring_fini unconditionally.
>>
>> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  4 ++--
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c   | 14 +-------------
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h   |  2 +-
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c     |  6 ++++--
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c    |  5 +++++
>>   drivers/gpu/drm/amd/amdgpu/cik_ih.c        |  1 -
>>   drivers/gpu/drm/amd/amdgpu/cz_ih.c         |  1 -
>>   drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c     |  1 -
>>   drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c      |  1 -
>>   drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c      |  1 -
>>   drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c      |  1 -
>>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c      |  1 -
>>   drivers/gpu/drm/amd/amdgpu/iceland_ih.c    |  1 -
>>   drivers/gpu/drm/amd/amdgpu/navi10_ih.c     |  4 ----
>>   drivers/gpu/drm/amd/amdgpu/si_ih.c         |  1 -
>>   drivers/gpu/drm/amd/amdgpu/tonga_ih.c      |  1 -
>>   drivers/gpu/drm/amd/amdgpu/vega10_ih.c     |  4 ----
>>   drivers/gpu/drm/amd/amdgpu/vega20_ih.c     |  4 ----
>>   18 files changed, 13 insertions(+), 40 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> index 18598eda18f6..a0bff4713672 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
>> @@ -3256,7 +3256,6 @@ static const struct attribute
>> *amdgpu_dev_attributes[] = {
>>       NULL
>>   };
>>   -
>>   /**
>>    * amdgpu_device_init - initialize the driver
>>    *
>> @@ -3698,12 +3697,13 @@ void amdgpu_device_fini_hw(struct
>> amdgpu_device *adev)
>>           amdgpu_ucode_sysfs_fini(adev);
>>       sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes);
>>   -
>>       amdgpu_fbdev_fini(adev);
>>         amdgpu_irq_fini_hw(adev);
>>         amdgpu_device_ip_fini_early(adev);
>> +
>> +    amdgpu_gart_dummy_page_fini(adev);
>>   }
>>     void amdgpu_device_fini_sw(struct amdgpu_device *adev)
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
>> index c5a9a4fb10d2..6460cf723f0a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
>> @@ -92,7 +92,7 @@ static int amdgpu_gart_dummy_page_init(struct
>> amdgpu_device *adev)
>>    *
>>    * Frees the dummy page used by the driver (all asics).
>>    */
>> -static void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev)
>> +void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev)
>>   {
>>       if (!adev->dummy_page_addr)
>>           return;
>> @@ -365,15 +365,3 @@ int amdgpu_gart_init(struct amdgpu_device *adev)
>>         return 0;
>>   }
>> -
>> -/**
>> - * amdgpu_gart_fini - tear down the driver info for managing the gart
>> - *
>> - * @adev: amdgpu_device pointer
>> - *
>> - * Tear down the gart driver info and free the dummy page (all asics).
>> - */
>> -void amdgpu_gart_fini(struct amdgpu_device *adev)
>> -{
>> -    amdgpu_gart_dummy_page_fini(adev);
>> -}
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
>> index a25fe97b0196..030b9d4c736a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.h
>> @@ -57,7 +57,7 @@ void amdgpu_gart_table_vram_free(struct
>> amdgpu_device *adev);
>>   int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
>>   void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
>>   int amdgpu_gart_init(struct amdgpu_device *adev);
>> -void amdgpu_gart_fini(struct amdgpu_device *adev);
>> +void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev);
>>   int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
>>                  int pages);
>>   int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
>> index faaa6aa2faaf..433469ace6f4 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.c
>> @@ -115,9 +115,11 @@ int amdgpu_ih_ring_init(struct amdgpu_device
>> *adev, struct amdgpu_ih_ring *ih,
>>    */
>>   void amdgpu_ih_ring_fini(struct amdgpu_device *adev, struct
>> amdgpu_ih_ring *ih)
>>   {
>> +
>> +    if (!ih->ring)
>> +        return;
>> +
>>       if (ih->use_bus_addr) {
>> -        if (!ih->ring)
>> -            return;
>>             /* add 8 bytes for the rptr/wptr shadows and
>>            * add them to the end of the ring allocation.
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> index 233b64dab94b..32ce0e679dc7 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c
>> @@ -361,6 +361,11 @@ void amdgpu_irq_fini_hw(struct amdgpu_device *adev)
>>           if (!amdgpu_device_has_dc_support(adev))
>>               flush_work(&adev->hotplug_work);
>>       }
>> +
>> +    amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
>> +    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>> +    amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
>> +    amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
>>   }
>>     /**
>> diff --git a/drivers/gpu/drm/amd/amdgpu/cik_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
>> index 183d44a6583c..df385ffc9768 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/cik_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
>> @@ -310,7 +310,6 @@ static int cik_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>       amdgpu_irq_remove_domain(adev);
>>         return 0;
>> diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
>> index d32743949003..b8c47e0cf37a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
>> @@ -302,7 +302,6 @@ static int cz_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>       amdgpu_irq_remove_domain(adev);
>>         return 0;
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
>> index 2bfd620576f2..5e8bfcdd422e 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
>> @@ -954,7 +954,6 @@ static int gmc_v10_0_sw_init(void *handle)
>>   static void gmc_v10_0_gart_fini(struct amdgpu_device *adev)
>>   {
>>       amdgpu_gart_table_vram_free(adev);
>> -    amdgpu_gart_fini(adev);
>>   }
>>     static int gmc_v10_0_sw_fini(void *handle)
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
>> index 405d6ad09022..0e81e03e9b49 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
>> @@ -898,7 +898,6 @@ static int gmc_v6_0_sw_fini(void *handle)
>>       amdgpu_vm_manager_fini(adev);
>>       amdgpu_gart_table_vram_free(adev);
>>       amdgpu_bo_fini(adev);
>> -    amdgpu_gart_fini(adev);
>>       release_firmware(adev->gmc.fw);
>>       adev->gmc.fw = NULL;
>>   diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
>> index 210ada2289ec..0795ea736573 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
>> @@ -1085,7 +1085,6 @@ static int gmc_v7_0_sw_fini(void *handle)
>>       kfree(adev->gmc.vm_fault_info);
>>       amdgpu_gart_table_vram_free(adev);
>>       amdgpu_bo_fini(adev);
>> -    amdgpu_gart_fini(adev);
>>       release_firmware(adev->gmc.fw);
>>       adev->gmc.fw = NULL;
>>   diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> index c1bd190841f8..dbf2e5472069 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> @@ -1194,7 +1194,6 @@ static int gmc_v8_0_sw_fini(void *handle)
>>       kfree(adev->gmc.vm_fault_info);
>>       amdgpu_gart_table_vram_free(adev);
>>       amdgpu_bo_fini(adev);
>> -    amdgpu_gart_fini(adev);
>>       release_firmware(adev->gmc.fw);
>>       adev->gmc.fw = NULL;
>>   diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> index c82d82da2c73..5ed0adae05cf 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
>> @@ -1601,7 +1601,6 @@ static int gmc_v9_0_sw_fini(void *handle)
>>       amdgpu_gart_table_vram_free(adev);
>>       amdgpu_bo_unref(&adev->gmc.pdb0_bo);
>>       amdgpu_bo_fini(adev);
>> -    amdgpu_gart_fini(adev);
>>         return 0;
>>   }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
>> index da96c6013477..ddfe4eaeea05 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
>> @@ -301,7 +301,6 @@ static int iceland_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>       amdgpu_irq_remove_domain(adev);
>>         return 0;
>> diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
>> index 5eea4550b856..941d464a2b47 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c
>> @@ -570,10 +570,6 @@ static int navi10_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>         return 0;
>>   }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/si_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/si_ih.c
>> index 751307f3252c..9a24f17a5750 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/si_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/si_ih.c
>> @@ -176,7 +176,6 @@ static int si_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>         return 0;
>>   }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
>> index 973d80ec7f6c..b08905d1c00f 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
>> @@ -313,7 +313,6 @@ static int tonga_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>       amdgpu_irq_remove_domain(adev);
>>         return 0;
>> diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
>> index dead9c2fbd4c..32ec4b8e806a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
>> @@ -514,10 +514,6 @@ static int vega10_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>         return 0;
>>   }
>> diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
>> b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
>> index 58993ae1fe11..f51dfc38ac65 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c
>> @@ -566,10 +566,6 @@ static int vega20_ih_sw_fini(void *handle)
>>       struct amdgpu_device *adev = (struct amdgpu_device *)handle;
>>         amdgpu_irq_fini_sw(adev);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih2);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih1);
>> -    amdgpu_ih_ring_fini(adev, &adev->irq.ih);
>>         return 0;
>>   }
>>
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