diff options
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c | 37 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h | 9 |
2 files changed, 31 insertions, 15 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c index e23c864aca11..5be30bf68b0c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c @@ -29,31 +29,40 @@ #define AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS 1024 #define AMDGPU_ONE_DOORBELL_SIZE 8 -static int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev) +int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev) { return roundup(AMDGPU_ONE_DOORBELL_SIZE * AMDGPU_MES_MAX_NUM_OF_QUEUES_PER_PROCESS, PAGE_SIZE); } -static int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev, - struct amdgpu_mes_process *process) +int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev, + unsigned int *doorbell_index) { int r = ida_simple_get(&adev->mes.doorbell_ida, 2, adev->mes.max_doorbell_slices, GFP_KERNEL); if (r > 0) - process->doorbell_index = r; + *doorbell_index = r; return r; } -static void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev, - struct amdgpu_mes_process *process) +void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev, + unsigned int doorbell_index) { - if (process->doorbell_index) - ida_simple_remove(&adev->mes.doorbell_ida, - process->doorbell_index); + if (doorbell_index) + ida_simple_remove(&adev->mes.doorbell_ida, doorbell_index); +} + +unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar( + struct amdgpu_device *adev, + uint32_t doorbell_index, + unsigned int doorbell_id) +{ + return ((doorbell_index * + amdgpu_mes_doorbell_process_slice(adev)) / sizeof(u32) + + doorbell_id * 2); } static int amdgpu_mes_queue_doorbell_get(struct amdgpu_device *adev, @@ -79,10 +88,8 @@ static int amdgpu_mes_queue_doorbell_get(struct amdgpu_device *adev, set_bit(found, process->doorbell_bitmap); - *doorbell_index = - (process->doorbell_index * - amdgpu_mes_doorbell_process_slice(adev)) / sizeof(u32) + - found * 2; + *doorbell_index = amdgpu_mes_get_doorbell_dw_offset_in_bar(adev, + process->doorbell_index, found); return 0; } @@ -262,7 +269,7 @@ int amdgpu_mes_create_process(struct amdgpu_device *adev, int 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); + r = amdgpu_mes_alloc_process_doorbells(adev, &process->doorbell_index); if (r < 0) { DRM_ERROR("failed to allocate doorbell for process\n"); goto clean_up_ctx; @@ -338,7 +345,7 @@ void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid) kfree(gang); } - amdgpu_mes_free_process_doorbells(adev, process); + amdgpu_mes_free_process_doorbells(adev, process->doorbell_index); idr_remove(&adev->mes.pasid_idr, pasid); amdgpu_bo_free_kernel(&process->proc_ctx_bo, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h index 781b57c30725..548015bb6ee7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h @@ -271,4 +271,13 @@ int amdgpu_mes_ctx_map_meta_data(struct amdgpu_device *adev, int amdgpu_mes_self_test(struct amdgpu_device *adev); +int amdgpu_mes_alloc_process_doorbells(struct amdgpu_device *adev, + unsigned int *doorbell_index); +void amdgpu_mes_free_process_doorbells(struct amdgpu_device *adev, + unsigned int doorbell_index); +unsigned int amdgpu_mes_get_doorbell_dw_offset_in_bar( + struct amdgpu_device *adev, + uint32_t doorbell_index, + unsigned int doorbell_id); +int amdgpu_mes_doorbell_process_slice(struct amdgpu_device *adev); #endif /* __AMDGPU_MES_H__ */ |