[PATCH 1/7] drm/amdgpu: add amdgpu_bo_vm bo type

[Nirmoy]

On 5/21/21 4:54 PM, Alex Deucher wrote:
> On Fri, May 21, 2021 at 8:46 AM Nirmoy Das <nirmoy.das at amd.com> wrote:
>> Add new BO subcalss that will be used by amdgpu vm code.
> s/subcalss/subclass/


Thanks, Alex!

>
> Alex
>
>> Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 32 ++++++++++++++++++++++
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 10 +++++++
>>   2 files changed, 42 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> index 745fcf3ea450..61b1edcb490a 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> @@ -692,6 +692,38 @@ int amdgpu_bo_create_user(struct amdgpu_device *adev,
>>          *ubo_ptr = to_amdgpu_bo_user(bo_ptr);
>>          return r;
>>   }
>> +
>> +/**
>> + * amdgpu_bo_create_vm - create an &amdgpu_bo_vm buffer object
>> + * @adev: amdgpu device object
>> + * @bp: parameters to be used for the buffer object
>> + * @vmbo_ptr: pointer to the buffer object pointer
>> + *
>> + * Create a BO to be for GPUVM.
>> + *
>> + * Returns:
>> + * 0 for success or a negative error code on failure.
>> + */
>> +
>> +int amdgpu_bo_create_vm(struct amdgpu_device *adev,
>> +                       struct amdgpu_bo_param *bp,
>> +                       struct amdgpu_bo_vm **vmbo_ptr)
>> +{
>> +       struct amdgpu_bo *bo_ptr;
>> +       int r;
>> +
>> +       /* bo_ptr_size will be determined by the caller and it depends on
>> +        * num of amdgpu_vm_pt entries.
>> +        */
>> +       BUG_ON(bp->bo_ptr_size < sizeof(struct amdgpu_bo_vm));
>> +       r = amdgpu_bo_create(adev, bp, &bo_ptr);
>> +       if (r)
>> +               return r;
>> +
>> +       *vmbo_ptr = to_amdgpu_bo_vm(bo_ptr);
>> +       return r;
>> +}
>> +
>>   /**
>>    * amdgpu_bo_validate - validate an &amdgpu_bo buffer object
>>    * @bo: pointer to the buffer object
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
>> index 11480c5a2716..a7fbf5f7051e 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
>> @@ -44,6 +44,7 @@
>>   #define AMDGPU_AMDKFD_CREATE_SVM_BO    (1ULL << 62)
>>
>>   #define to_amdgpu_bo_user(abo) container_of((abo), struct amdgpu_bo_user, bo)
>> +#define to_amdgpu_bo_vm(abo) container_of((abo), struct amdgpu_bo_vm, bo)
>>
>>   struct amdgpu_bo_param {
>>          unsigned long                   size;
>> @@ -125,6 +126,12 @@ struct amdgpu_bo_user {
>>
>>   };
>>
>> +struct amdgpu_bo_vm {
>> +       struct amdgpu_bo                bo;
>> +       struct amdgpu_bo                *shadow;
>> +       struct amdgpu_vm_pt             entries[];
>> +};
>> +
>>   static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
>>   {
>>          return container_of(tbo, struct amdgpu_bo, tbo);
>> @@ -272,6 +279,9 @@ int amdgpu_bo_create_kernel_at(struct amdgpu_device *adev,
>>   int amdgpu_bo_create_user(struct amdgpu_device *adev,
>>                            struct amdgpu_bo_param *bp,
>>                            struct amdgpu_bo_user **ubo_ptr);
>> +int amdgpu_bo_create_vm(struct amdgpu_device *adev,
>> +                       struct amdgpu_bo_param *bp,
>> +                       struct amdgpu_bo_vm **ubo_ptr);
>>   void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
>>                             void **cpu_addr);
>>   int amdgpu_bo_create_shadow(struct amdgpu_device *adev,
>> --
>> 2.31.1
>>
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