1 /*
2  * Copyright 2009 Jerome Glisse.
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 shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Jerome Glisse
23  */
24 
25 #include <drm/amdgpu_drm.h>
26 #include "amdgpu.h"
27 
28 #define AMDGPU_BENCHMARK_ITERATIONS 1024
29 #define AMDGPU_BENCHMARK_COMMON_MODES_N 17
30 
31 static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
32 				    uint64_t saddr, uint64_t daddr, int n)
33 {
34 	unsigned long start_jiffies;
35 	unsigned long end_jiffies;
36 	struct dma_fence *fence;
37 	int i, r;
38 
39 	start_jiffies = jiffies;
40 	for (i = 0; i < n; i++) {
41 		struct amdgpu_ring *ring = adev->mman.buffer_funcs_ring;
42 		r = amdgpu_copy_buffer(ring, saddr, daddr, size, NULL, &fence,
43 				       false, false, false);
44 		if (r)
45 			goto exit_do_move;
46 		r = dma_fence_wait(fence, false);
47 		dma_fence_put(fence);
48 		if (r)
49 			goto exit_do_move;
50 	}
51 	end_jiffies = jiffies;
52 	r = jiffies_to_msecs(end_jiffies - start_jiffies);
53 
54 exit_do_move:
55 	return r;
56 }
57 
58 
59 static void amdgpu_benchmark_log_results(int n, unsigned size,
60 					 unsigned int time,
61 					 unsigned sdomain, unsigned ddomain,
62 					 char *kind)
63 {
64 	unsigned int throughput = (n * (size >> 10)) / time;
65 	DRM_INFO("amdgpu: %s %u bo moves of %u kB from"
66 		 " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
67 		 kind, n, size >> 10, sdomain, ddomain, time,
68 		 throughput * 8, throughput);
69 }
70 
71 static void amdgpu_benchmark_move(struct amdgpu_device *adev, unsigned size,
72 				  unsigned sdomain, unsigned ddomain)
73 {
74 	struct amdgpu_bo *dobj = NULL;
75 	struct amdgpu_bo *sobj = NULL;
76 	struct amdgpu_bo_param bp;
77 	uint64_t saddr, daddr;
78 	int r, n;
79 	int time;
80 
81 	memset(&bp, 0, sizeof(bp));
82 	bp.size = size;
83 	bp.byte_align = PAGE_SIZE;
84 	bp.domain = sdomain;
85 	bp.flags = 0;
86 	bp.type = ttm_bo_type_kernel;
87 	bp.resv = NULL;
88 	bp.bo_ptr_size = sizeof(struct amdgpu_bo);
89 
90 	n = AMDGPU_BENCHMARK_ITERATIONS;
91 	r = amdgpu_bo_create(adev, &bp, &sobj);
92 	if (r) {
93 		goto out_cleanup;
94 	}
95 	r = amdgpu_bo_reserve(sobj, false);
96 	if (unlikely(r != 0))
97 		goto out_cleanup;
98 	r = amdgpu_bo_pin(sobj, sdomain);
99 	if (r) {
100 		amdgpu_bo_unreserve(sobj);
101 		goto out_cleanup;
102 	}
103 	r = amdgpu_ttm_alloc_gart(&sobj->tbo);
104 	amdgpu_bo_unreserve(sobj);
105 	if (r) {
106 		goto out_cleanup;
107 	}
108 	saddr = amdgpu_bo_gpu_offset(sobj);
109 	bp.domain = ddomain;
110 	r = amdgpu_bo_create(adev, &bp, &dobj);
111 	if (r) {
112 		goto out_cleanup;
113 	}
114 	r = amdgpu_bo_reserve(dobj, false);
115 	if (unlikely(r != 0))
116 		goto out_cleanup;
117 	r = amdgpu_bo_pin(dobj, ddomain);
118 	if (r) {
119 		amdgpu_bo_unreserve(sobj);
120 		goto out_cleanup;
121 	}
122 	r = amdgpu_ttm_alloc_gart(&dobj->tbo);
123 	amdgpu_bo_unreserve(dobj);
124 	if (r) {
125 		goto out_cleanup;
126 	}
127 	daddr = amdgpu_bo_gpu_offset(dobj);
128 
129 	if (adev->mman.buffer_funcs) {
130 		time = amdgpu_benchmark_do_move(adev, size, saddr, daddr, n);
131 		if (time < 0)
132 			goto out_cleanup;
133 		if (time > 0)
134 			amdgpu_benchmark_log_results(n, size, time,
135 						     sdomain, ddomain, "dma");
136 	}
137 
138 out_cleanup:
139 	/* Check error value now. The value can be overwritten when clean up.*/
140 	if (r) {
141 		DRM_ERROR("Error while benchmarking BO move.\n");
142 	}
143 
144 	if (sobj) {
145 		r = amdgpu_bo_reserve(sobj, true);
146 		if (likely(r == 0)) {
147 			amdgpu_bo_unpin(sobj);
148 			amdgpu_bo_unreserve(sobj);
149 		}
150 		amdgpu_bo_unref(&sobj);
151 	}
152 	if (dobj) {
153 		r = amdgpu_bo_reserve(dobj, true);
154 		if (likely(r == 0)) {
155 			amdgpu_bo_unpin(dobj);
156 			amdgpu_bo_unreserve(dobj);
157 		}
158 		amdgpu_bo_unref(&dobj);
159 	}
160 }
161 
162 void amdgpu_benchmark(struct amdgpu_device *adev, int test_number)
163 {
164 	int i;
165 	static const int common_modes[AMDGPU_BENCHMARK_COMMON_MODES_N] = {
166 		640 * 480 * 4,
167 		720 * 480 * 4,
168 		800 * 600 * 4,
169 		848 * 480 * 4,
170 		1024 * 768 * 4,
171 		1152 * 768 * 4,
172 		1280 * 720 * 4,
173 		1280 * 800 * 4,
174 		1280 * 854 * 4,
175 		1280 * 960 * 4,
176 		1280 * 1024 * 4,
177 		1440 * 900 * 4,
178 		1400 * 1050 * 4,
179 		1680 * 1050 * 4,
180 		1600 * 1200 * 4,
181 		1920 * 1080 * 4,
182 		1920 * 1200 * 4
183 	};
184 
185 	switch (test_number) {
186 	case 1:
187 		/* simple test, VRAM to GTT and GTT to VRAM */
188 		amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_GTT,
189 				      AMDGPU_GEM_DOMAIN_VRAM);
190 		amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
191 				      AMDGPU_GEM_DOMAIN_GTT);
192 		break;
193 	case 2:
194 		/* simple test, VRAM to VRAM */
195 		amdgpu_benchmark_move(adev, 1024*1024, AMDGPU_GEM_DOMAIN_VRAM,
196 				      AMDGPU_GEM_DOMAIN_VRAM);
197 		break;
198 	case 3:
199 		/* GTT to VRAM, buffer size sweep, powers of 2 */
200 		for (i = 1; i <= 16384; i <<= 1)
201 			amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
202 					      AMDGPU_GEM_DOMAIN_GTT,
203 					      AMDGPU_GEM_DOMAIN_VRAM);
204 		break;
205 	case 4:
206 		/* VRAM to GTT, buffer size sweep, powers of 2 */
207 		for (i = 1; i <= 16384; i <<= 1)
208 			amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
209 					      AMDGPU_GEM_DOMAIN_VRAM,
210 					      AMDGPU_GEM_DOMAIN_GTT);
211 		break;
212 	case 5:
213 		/* VRAM to VRAM, buffer size sweep, powers of 2 */
214 		for (i = 1; i <= 16384; i <<= 1)
215 			amdgpu_benchmark_move(adev, i * AMDGPU_GPU_PAGE_SIZE,
216 					      AMDGPU_GEM_DOMAIN_VRAM,
217 					      AMDGPU_GEM_DOMAIN_VRAM);
218 		break;
219 	case 6:
220 		/* GTT to VRAM, buffer size sweep, common modes */
221 		for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
222 			amdgpu_benchmark_move(adev, common_modes[i],
223 					      AMDGPU_GEM_DOMAIN_GTT,
224 					      AMDGPU_GEM_DOMAIN_VRAM);
225 		break;
226 	case 7:
227 		/* VRAM to GTT, buffer size sweep, common modes */
228 		for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
229 			amdgpu_benchmark_move(adev, common_modes[i],
230 					      AMDGPU_GEM_DOMAIN_VRAM,
231 					      AMDGPU_GEM_DOMAIN_GTT);
232 		break;
233 	case 8:
234 		/* VRAM to VRAM, buffer size sweep, common modes */
235 		for (i = 0; i < AMDGPU_BENCHMARK_COMMON_MODES_N; i++)
236 			amdgpu_benchmark_move(adev, common_modes[i],
237 					      AMDGPU_GEM_DOMAIN_VRAM,
238 					      AMDGPU_GEM_DOMAIN_VRAM);
239 		break;
240 
241 	default:
242 		DRM_ERROR("Unknown benchmark\n");
243 	}
244 }
245