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amdgpu: add amdgpu_bo_list_update interface v2 

v2: some minor improvement

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
main
Jammy Zhou 2015-05-18 20:27:24 +08:00 committed by Alex Deucher
parent 3f1ca0f939
commit 7244698ddc
2 changed files with 54 additions and 0 deletions
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19
amdgpu/amdgpu.h
View File

@ -781,6 +781,25 @@ int amdgpu_bo_list_create(amdgpu_device_handle dev,
*/
int amdgpu_bo_list_destroy(amdgpu_bo_list_handle handle);
/**
* Update resources for existing BO list
*
* \param handle - \c [in] BO list handle
* \param number_of_resources - \c [in] Number of BOs in the list
* \param resources - \c [in] List of BO handles
* \param resource_prios - \c [in] Optional priority for each handle
*
* \return 0 on success\n
* >0 - AMD specific error code\n
* <0 - Negative POSIX Error code
*
* \sa amdgpu_bo_list_update()
*/
int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
uint32_t number_of_resources,
amdgpu_bo_handle *resources,
uint8_t *resource_prios);
/*
* Special GPU Resources
*

35
amdgpu/amdgpu_bo.c
View File

@ -715,3 +715,38 @@ int amdgpu_bo_list_destroy(amdgpu_bo_list_handle list)
return r;
}
int amdgpu_bo_list_update(amdgpu_bo_list_handle handle,
uint32_t number_of_resources,
amdgpu_bo_handle *resources,
uint8_t *resource_prios)
{
struct drm_amdgpu_bo_list_entry *list;
union drm_amdgpu_bo_list args;
unsigned i;
int r;
list = calloc(number_of_resources, sizeof(struct drm_amdgpu_bo_list_entry));
if (list == NULL)
return -ENOMEM;
memset(&args, 0, sizeof(args));
args.in.operation = AMDGPU_BO_LIST_OP_UPDATE;
args.in.list_handle = handle->handle;
args.in.bo_number = number_of_resources;
args.in.bo_info_size = sizeof(struct drm_amdgpu_bo_list_entry);
args.in.bo_info_ptr = (uintptr_t)list;
for (i = 0; i < number_of_resources; i++) {
list[i].bo_handle = resources[i]->handle;
if (resource_prios)
list[i].bo_priority = resource_prios[i];
else
list[i].bo_priority = 0;
}
r = drmCommandWriteRead(handle->dev->fd, DRM_AMDGPU_BO_LIST,
&args, sizeof(args));
free(list);
return r;
}