1 /* $NetBSD: amdgpu_ih.h,v 1.3 2018/08/27 14:04:50 riastradh Exp $ */ 2 3 /* 4 * Copyright 2014 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 */ 25 26 #ifndef __AMDGPU_IH_H__ 27 #define __AMDGPU_IH_H__ 28 29 struct amdgpu_device; 30 31 /* 32 * R6xx+ IH ring 33 */ 34 struct amdgpu_ih_ring { 35 struct amdgpu_bo *ring_obj; 36 #ifdef __NetBSD__ 37 bus_dma_segment_t ring_seg; 38 bus_dmamap_t ring_map; 39 #endif 40 volatile uint32_t *ring; 41 unsigned rptr; 42 unsigned ring_size; 43 uint64_t gpu_addr; 44 uint32_t ptr_mask; 45 atomic_t lock; 46 bool enabled; 47 unsigned wptr_offs; 48 unsigned rptr_offs; 49 u32 doorbell_index; 50 bool use_doorbell; 51 bool use_bus_addr; 52 dma_addr_t rb_dma_addr; /* only used when use_bus_addr = true */ 53 }; 54 55 struct amdgpu_iv_entry { 56 unsigned src_id; 57 unsigned src_data; 58 unsigned ring_id; 59 unsigned vm_id; 60 unsigned pas_id; 61 const uint32_t *iv_entry; 62 }; 63 64 int amdgpu_ih_ring_init(struct amdgpu_device *adev, unsigned ring_size, 65 bool use_bus_addr); 66 void amdgpu_ih_ring_fini(struct amdgpu_device *adev); 67 int amdgpu_ih_process(struct amdgpu_device *adev); 68 69 #endif 70