diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h index fce22d3f816b..2ce310b31942 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_rlc.h @@ -237,7 +237,21 @@ struct amdgpu_rlc_funcs { void (*unset_safe_mode)(struct amdgpu_device *adev, int xcc_id); int (*init)(struct amdgpu_device *adev); u32 (*get_csb_size)(struct amdgpu_device *adev); - void (*get_csb_buffer)(struct amdgpu_device *adev, volatile u32 *buffer); + + /** + * @get_csb_buffer: Get the clear state to be put into the hardware. + * + * The parameter adev is used to get the CS data and other gfx info, + * and buffer is the RLC CS pointer + * + * Sometimes, the user space puts a request to clear the state in the + * command buffer; this function provides the clear state that gets put + * into the hardware. Note that the driver programs Clear State + * Indirect Buffer (CSB) explicitly when it sets up the kernel rings, + * and it also provides a pointer to it which is used by the firmware + * to load the clear state in some cases. + */ + void (*get_csb_buffer)(struct amdgpu_device *adev, u32 *buffer); int (*get_cp_table_num)(struct amdgpu_device *adev); int (*resume)(struct amdgpu_device *adev); void (*stop)(struct amdgpu_device *adev); @@ -261,19 +275,19 @@ struct amdgpu_rlc { /* for power gating */ struct amdgpu_bo *save_restore_obj; uint64_t save_restore_gpu_addr; - volatile uint32_t *sr_ptr; + uint32_t *sr_ptr; const u32 *reg_list; u32 reg_list_size; /* for clear state */ struct amdgpu_bo *clear_state_obj; uint64_t clear_state_gpu_addr; - volatile uint32_t *cs_ptr; + uint32_t *cs_ptr; const struct cs_section_def *cs_data; u32 clear_state_size; /* for cp tables */ struct amdgpu_bo *cp_table_obj; uint64_t cp_table_gpu_addr; - volatile uint32_t *cp_table_ptr; + uint32_t *cp_table_ptr; u32 cp_table_size; /* safe mode for updating CG/PG state */ |