Re: [PATCH v2 01/21] drm/amdgpu: Introduce GEM object functions

[Thomas Zimmermann <tzimmermann-l3A5Bk7waGM@public.gmane.org>]

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Hi

Am 15.09.20 um 17:05 schrieb Christian König:
> Am 15.09.20 um 16:59 schrieb Thomas Zimmermann:
>> GEM object functions deprecate several similar callback interfaces in
>> struct drm_driver. This patch replaces the per-driver callbacks with
>> per-instance callbacks in amdgpu. The only exception is gem_prime_mmap,
>> which is non-trivial to convert.
>>
>> v2:
>>     * move object-function instance to amdgpu_gem.c (Christian)
>>     * set callbacks in amdgpu_gem_object_create() (Christian)
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann-l3A5Bk7waGM@public.gmane.org>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    |  6 ------
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c    | 23 +++++++++++++++++-----
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h    |  5 -----
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_object.c |  1 +
>>   4 files changed, 19 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> index 6edde2b9e402..840ca8f9c1e1 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
>> @@ -1505,19 +1505,13 @@ static struct drm_driver kms_driver = {
>>       .lastclose = amdgpu_driver_lastclose_kms,
>>       .irq_handler = amdgpu_irq_handler,
>>       .ioctls = amdgpu_ioctls_kms,
>> -    .gem_free_object_unlocked = amdgpu_gem_object_free,
>> -    .gem_open_object = amdgpu_gem_object_open,
>> -    .gem_close_object = amdgpu_gem_object_close,
>>       .dumb_create = amdgpu_mode_dumb_create,
>>       .dumb_map_offset = amdgpu_mode_dumb_mmap,
>>       .fops = &amdgpu_driver_kms_fops,
>>         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
>>       .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
>> -    .gem_prime_export = amdgpu_gem_prime_export,
>>       .gem_prime_import = amdgpu_gem_prime_import,
>> -    .gem_prime_vmap = amdgpu_gem_prime_vmap,
>> -    .gem_prime_vunmap = amdgpu_gem_prime_vunmap,
>>       .gem_prime_mmap = amdgpu_gem_prime_mmap,
>>         .name = DRIVER_NAME,
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
>> index aa7f230c71bf..aeecd5dc3ce4 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
>> @@ -36,9 +36,12 @@
>>     #include "amdgpu.h"
>>   #include "amdgpu_display.h"
>> +#include "amdgpu_dma_buf.h"
>>   #include "amdgpu_xgmi.h"
>>   -void amdgpu_gem_object_free(struct drm_gem_object *gobj)
>> +static const struct drm_gem_object_funcs amdgpu_gem_object_funcs;
>> +
>> +static void amdgpu_gem_object_free(struct drm_gem_object *gobj)
>>   {
>>       struct amdgpu_bo *robj = gem_to_amdgpu_bo(gobj);
>>   @@ -87,6 +90,7 @@ int amdgpu_gem_object_create(struct amdgpu_device
>> *adev, unsigned long size,
>>           return r;
>>       }
>>       *obj = &bo->tbo.base;
>> +    (*obj)->funcs = &amdgpu_gem_object_funcs;
>>         return 0;
>>   }
>> @@ -119,8 +123,8 @@ void amdgpu_gem_force_release(struct amdgpu_device
>> *adev)
>>    * Call from drm_gem_handle_create which appear in both new and open
>> ioctl
>>    * case.
>>    */
>> -int amdgpu_gem_object_open(struct drm_gem_object *obj,
>> -               struct drm_file *file_priv)
>> +static int amdgpu_gem_object_open(struct drm_gem_object *obj,
>> +                  struct drm_file *file_priv)
>>   {
>>       struct amdgpu_bo *abo = gem_to_amdgpu_bo(obj);
>>       struct amdgpu_device *adev = amdgpu_ttm_adev(abo->tbo.bdev);
>> @@ -152,8 +156,8 @@ int amdgpu_gem_object_open(struct drm_gem_object
>> *obj,
>>       return 0;
>>   }
>>   -void amdgpu_gem_object_close(struct drm_gem_object *obj,
>> -                 struct drm_file *file_priv)
>> +static void amdgpu_gem_object_close(struct drm_gem_object *obj,
>> +                    struct drm_file *file_priv)
>>   {
>>       struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
>>       struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
>> @@ -211,6 +215,15 @@ void amdgpu_gem_object_close(struct
>> drm_gem_object *obj,
>>       ttm_eu_backoff_reservation(&ticket, &list);
>>   }
>>   +static const struct drm_gem_object_funcs amdgpu_gem_object_funcs = {
>> +    .free = amdgpu_gem_object_free,
>> +    .open = amdgpu_gem_object_open,
>> +    .close = amdgpu_gem_object_close,
>> +    .export = amdgpu_gem_prime_export,
>> +    .vmap = amdgpu_gem_prime_vmap,
>> +    .vunmap = amdgpu_gem_prime_vunmap,
>> +};
>> +
>>   /*
>>    * GEM ioctls.
>>    */
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
>> index e0f025dd1b14..637bf51dbf06 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h
>> @@ -33,11 +33,6 @@
>>   #define AMDGPU_GEM_DOMAIN_MAX        0x3
>>   #define gem_to_amdgpu_bo(gobj) container_of((gobj), struct
>> amdgpu_bo, tbo.base)
>>   -void amdgpu_gem_object_free(struct drm_gem_object *obj);
>> -int amdgpu_gem_object_open(struct drm_gem_object *obj,
>> -                struct drm_file *file_priv);
>> -void amdgpu_gem_object_close(struct drm_gem_object *obj,
>> -                struct drm_file *file_priv);
>>   unsigned long amdgpu_gem_timeout(uint64_t timeout_ns);
>>     /*
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> index ac043baac05d..c4e82a8fa53f 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
>> @@ -561,6 +561,7 @@ static int amdgpu_bo_do_create(struct
>> amdgpu_device *adev,
>>       bo = kzalloc(sizeof(struct amdgpu_bo), GFP_KERNEL);
>>       if (bo == NULL)
>>           return -ENOMEM;
>> +
> 
> The newline is not unrelated.
> 
> Apart from that the patch is Reviewed-by: Christian König
> <christian.koenig-5C7GfCeVMHo@public.gmane.org>.
> 
> But I think we need some smoke testing of it.

I gave it a try on the HW/drivers that I listed in the cover letter.
Appears to be working there. There was a bug reported by CI that will be
fixed in the next iteration.

Best regards
Thomas

> 
> Christian.
> 
>>       drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base,
>> size);
>>       INIT_LIST_HEAD(&bo->shadow_list);
>>       bo->vm_bo = NULL;
> 
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-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer


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