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drm/amdgpu/mes: implement creating mes process v2

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Create a mes process which contains process-related resources,
like vm, doorbell bitmap, process ctx bo and etc.

v2: move the simple variable to the end

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jack Xiao 2020-03-27 15:03:16 +08:00 committed by Alex Deucher
parent 29634c3f8b
commit 48dcd2b751
2 changed files with 80 additions and 0 deletions
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77
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
View File

@ -214,3 +214,80 @@ void amdgpu_mes_fini(struct amdgpu_device *adev)
ida_destroy(&adev->mes.doorbell_ida);
mutex_destroy(&adev->mes.mutex);
}
int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid,
struct amdgpu_vm *vm)
{
struct amdgpu_mes_process *process;
int r;
mutex_lock(&adev->mes.mutex);
/* allocate the mes process buffer */
process = kzalloc(sizeof(struct amdgpu_mes_process), GFP_KERNEL);
if (!process) {
DRM_ERROR("no more memory to create mes process\n");
mutex_unlock(&adev->mes.mutex);
return -ENOMEM;
}
process->doorbell_bitmap =
kzalloc(DIV_ROUND_UP(AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS,
BITS_PER_BYTE), GFP_KERNEL);
if (!process->doorbell_bitmap) {
DRM_ERROR("failed to allocate doorbell bitmap\n");
kfree(process);
mutex_unlock(&adev->mes.mutex);
return -ENOMEM;
}
/* add the mes process to idr list */
r = idr_alloc(&adev->mes.pasid_idr, process, pasid, pasid + 1,
GFP_KERNEL);
if (r < 0) {
DRM_ERROR("failed to lock pasid=%d\n", pasid);
goto clean_up_memory;
}
/* allocate the process context bo and map it */
r = amdgpu_bo_create_kernel(adev, AMDGPU_MES_PROC_CTX_SIZE, PAGE_SIZE,
AMDGPU_GEM_DOMAIN_GTT,
&process->proc_ctx_bo,
&process->proc_ctx_gpu_addr,
&process->proc_ctx_cpu_ptr);
if (r) {
DRM_ERROR("failed to allocate process context bo\n");
goto clean_up_pasid;
}
memset(process->proc_ctx_cpu_ptr, 0, AMDGPU_MES_PROC_CTX_SIZE);
/* allocate the starting doorbell index of the process */
r = amdgpu_mes_alloc_process_doorbells(adev, process);
if (r < 0) {
DRM_ERROR("failed to allocate doorbell for process\n");
goto clean_up_ctx;
}
DRM_DEBUG("process doorbell index = %d\n", process->doorbell_index);
INIT_LIST_HEAD(&process->gang_list);
process->vm = vm;
process->pasid = pasid;
process->process_quantum = adev->mes.default_process_quantum;
process->pd_gpu_addr = amdgpu_bo_gpu_offset(vm->root.bo);
mutex_unlock(&adev->mes.mutex);
return 0;
clean_up_ctx:
amdgpu_bo_free_kernel(&process->proc_ctx_bo,
&process->proc_ctx_gpu_addr,
&process->proc_ctx_cpu_ptr);
clean_up_pasid:
idr_remove(&adev->mes.pasid_idr, pasid);
clean_up_memory:
kfree(process->doorbell_bitmap);
kfree(process);
mutex_unlock(&adev->mes.mutex);
return r;
}

3
drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
View File

@ -214,4 +214,7 @@ struct amdgpu_mes_funcs {
int amdgpu_mes_init(struct amdgpu_device *adev);
void amdgpu_mes_fini(struct amdgpu_device *adev);
int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid,
struct amdgpu_vm *vm);
#endif /* __AMDGPU_MES_H__ */