diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h new file mode 100644 index 000000000000..c62b09e555d6 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ih.h @@ -0,0 +1,62 @@ +/* + * Copyright 2014 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __AMDGPU_IH_H__ +#define __AMDGPU_IH_H__ + +struct amdgpu_device; + +/* + * R6xx+ IH ring + */ +struct amdgpu_ih_ring { + struct amdgpu_bo *ring_obj; + volatile uint32_t *ring; + unsigned rptr; + unsigned ring_size; + uint64_t gpu_addr; + uint32_t ptr_mask; + atomic_t lock; + bool enabled; + unsigned wptr_offs; + unsigned rptr_offs; + u32 doorbell_index; + bool use_doorbell; + bool use_bus_addr; + dma_addr_t rb_dma_addr; /* only used when use_bus_addr = true */ +}; + +struct amdgpu_iv_entry { + unsigned src_id; + unsigned src_data; + unsigned ring_id; + unsigned vm_id; + unsigned pas_id; +}; + +int amdgpu_ih_ring_init(struct amdgpu_device *adev, unsigned ring_size, + bool use_bus_addr); +void amdgpu_ih_ring_fini(struct amdgpu_device *adev); +int amdgpu_ih_process(struct amdgpu_device *adev); + +#endif |