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1 /*
2  * Copyright (C) 2014-2015 Etnaviv Project
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21  * SOFTWARE.
22  *
23  * Authors:
24  *    Christian Gmeiner <christian.gmeiner@gmail.com>
25  */
26 
27 #ifndef ETNAVIV_DRMIF_H_
28 #define ETNAVIV_DRMIF_H_
29 
30 #include <xf86drm.h>
31 #include <stdint.h>
32 
33 struct etna_bo;
34 struct etna_pipe;
35 struct etna_gpu;
36 struct etna_device;
37 struct etna_cmd_stream;
38 
39 enum etna_pipe_id {
40 	ETNA_PIPE_3D = 0,
41 	ETNA_PIPE_2D = 1,
42 	ETNA_PIPE_VG = 2,
43 	ETNA_PIPE_MAX
44 };
45 
46 enum etna_param_id {
47 	ETNA_GPU_MODEL                     = 0x1,
48 	ETNA_GPU_REVISION                  = 0x2,
49 	ETNA_GPU_FEATURES_0                = 0x3,
50 	ETNA_GPU_FEATURES_1                = 0x4,
51 	ETNA_GPU_FEATURES_2                = 0x5,
52 	ETNA_GPU_FEATURES_3                = 0x6,
53 	ETNA_GPU_FEATURES_4                = 0x7,
54 	ETNA_GPU_FEATURES_5                = 0x8,
55 	ETNA_GPU_FEATURES_6                = 0x9,
56 
57 	ETNA_GPU_STREAM_COUNT              = 0x10,
58 	ETNA_GPU_REGISTER_MAX              = 0x11,
59 	ETNA_GPU_THREAD_COUNT              = 0x12,
60 	ETNA_GPU_VERTEX_CACHE_SIZE         = 0x13,
61 	ETNA_GPU_SHADER_CORE_COUNT         = 0x14,
62 	ETNA_GPU_PIXEL_PIPES               = 0x15,
63 	ETNA_GPU_VERTEX_OUTPUT_BUFFER_SIZE = 0x16,
64 	ETNA_GPU_BUFFER_SIZE               = 0x17,
65 	ETNA_GPU_INSTRUCTION_COUNT         = 0x18,
66 	ETNA_GPU_NUM_CONSTANTS             = 0x19,
67 	ETNA_GPU_NUM_VARYINGS              = 0x1a
68 };
69 
70 /* bo flags: */
71 #define DRM_ETNA_GEM_CACHE_CACHED       0x00010000
72 #define DRM_ETNA_GEM_CACHE_WC           0x00020000
73 #define DRM_ETNA_GEM_CACHE_UNCACHED     0x00040000
74 #define DRM_ETNA_GEM_CACHE_MASK         0x000f0000
75 /* map flags */
76 #define DRM_ETNA_GEM_FORCE_MMU          0x00100000
77 
78 /* bo access flags: (keep aligned to ETNA_PREP_x) */
79 #define DRM_ETNA_PREP_READ              0x01
80 #define DRM_ETNA_PREP_WRITE             0x02
81 #define DRM_ETNA_PREP_NOSYNC            0x04
82 
83 /* device functions:
84  */
85 
86 struct etna_device *etna_device_new(int fd);
87 struct etna_device *etna_device_new_dup(int fd);
88 struct etna_device *etna_device_ref(struct etna_device *dev);
89 void etna_device_del(struct etna_device *dev);
90 int etna_device_fd(struct etna_device *dev);
91 
92 /* gpu functions:
93  */
94 
95 struct etna_gpu *etna_gpu_new(struct etna_device *dev, unsigned int core);
96 void etna_gpu_del(struct etna_gpu *gpu);
97 int etna_gpu_get_param(struct etna_gpu *gpu, enum etna_param_id param,
98 		uint64_t *value);
99 
100 
101 /* pipe functions:
102  */
103 
104 struct etna_pipe *etna_pipe_new(struct etna_gpu *gpu, enum etna_pipe_id id);
105 void etna_pipe_del(struct etna_pipe *pipe);
106 int etna_pipe_wait(struct etna_pipe *pipe, uint32_t timestamp, uint32_t ms);
107 int etna_pipe_wait_ns(struct etna_pipe *pipe, uint32_t timestamp, uint64_t ns);
108 
109 
110 /* buffer-object functions:
111  */
112 
113 struct etna_bo *etna_bo_new(struct etna_device *dev,
114 		uint32_t size, uint32_t flags);
115 struct etna_bo *etna_bo_from_handle(struct etna_device *dev,
116 		uint32_t handle, uint32_t size);
117 struct etna_bo *etna_bo_from_name(struct etna_device *dev, uint32_t name);
118 struct etna_bo *etna_bo_from_dmabuf(struct etna_device *dev, int fd);
119 struct etna_bo *etna_bo_ref(struct etna_bo *bo);
120 void etna_bo_del(struct etna_bo *bo);
121 int etna_bo_get_name(struct etna_bo *bo, uint32_t *name);
122 uint32_t etna_bo_handle(struct etna_bo *bo);
123 int etna_bo_dmabuf(struct etna_bo *bo);
124 uint32_t etna_bo_size(struct etna_bo *bo);
125 void * etna_bo_map(struct etna_bo *bo);
126 int etna_bo_cpu_prep(struct etna_bo *bo, uint32_t op);
127 void etna_bo_cpu_fini(struct etna_bo *bo);
128 
129 
130 /* cmd stream functions:
131  */
132 
133 struct etna_cmd_stream {
134 	uint32_t *buffer;
135 	uint32_t offset;	/* in 32-bit words */
136 	uint32_t size;		/* in 32-bit words */
137 };
138 
139 struct etna_cmd_stream *etna_cmd_stream_new(struct etna_pipe *pipe, uint32_t size,
140 		void (*reset_notify)(struct etna_cmd_stream *stream, void *priv),
141 		void *priv);
142 void etna_cmd_stream_del(struct etna_cmd_stream *stream);
143 uint32_t etna_cmd_stream_timestamp(struct etna_cmd_stream *stream);
144 void etna_cmd_stream_flush(struct etna_cmd_stream *stream);
145 void etna_cmd_stream_finish(struct etna_cmd_stream *stream);
146 
etna_cmd_stream_avail(struct etna_cmd_stream * stream)147 static inline uint32_t etna_cmd_stream_avail(struct etna_cmd_stream *stream)
148 {
149 	static const uint32_t END_CLEARANCE = 2; /* LINK op code */
150 
151 	return stream->size - stream->offset - END_CLEARANCE;
152 }
153 
etna_cmd_stream_reserve(struct etna_cmd_stream * stream,size_t n)154 static inline void etna_cmd_stream_reserve(struct etna_cmd_stream *stream, size_t n)
155 {
156 	if (etna_cmd_stream_avail(stream) < n)
157 		etna_cmd_stream_flush(stream);
158 }
159 
etna_cmd_stream_emit(struct etna_cmd_stream * stream,uint32_t data)160 static inline void etna_cmd_stream_emit(struct etna_cmd_stream *stream, uint32_t data)
161 {
162 	stream->buffer[stream->offset++] = data;
163 }
164 
etna_cmd_stream_get(struct etna_cmd_stream * stream,uint32_t offset)165 static inline uint32_t etna_cmd_stream_get(struct etna_cmd_stream *stream, uint32_t offset)
166 {
167 	return stream->buffer[offset];
168 }
169 
etna_cmd_stream_set(struct etna_cmd_stream * stream,uint32_t offset,uint32_t data)170 static inline void etna_cmd_stream_set(struct etna_cmd_stream *stream, uint32_t offset,
171 		uint32_t data)
172 {
173 	stream->buffer[offset] = data;
174 }
175 
etna_cmd_stream_offset(struct etna_cmd_stream * stream)176 static inline uint32_t etna_cmd_stream_offset(struct etna_cmd_stream *stream)
177 {
178 	return stream->offset;
179 }
180 
181 struct etna_reloc {
182 	struct etna_bo *bo;
183 #define ETNA_RELOC_READ             0x0001
184 #define ETNA_RELOC_WRITE            0x0002
185 	uint32_t flags;
186 	uint32_t offset;
187 };
188 
189 void etna_cmd_stream_reloc(struct etna_cmd_stream *stream, const struct etna_reloc *r);
190 
191 #endif /* ETNAVIV_DRMIF_H_ */
192