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amdgpu_ih.h revision 1.3 
      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