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 #include <drm/drmP.h>
25 #include <drm/radeon_drm.h>
26 #include "radeon_reg.h"
27 #include "radeon.h"
28 
29 #define RADEON_BENCHMARK_COPY_BLIT 1
30 #define RADEON_BENCHMARK_COPY_DMA  0
31 
32 #define RADEON_BENCHMARK_ITERATIONS 1024
33 #define RADEON_BENCHMARK_COMMON_MODES_N 17
34 
35 static int radeon_benchmark_do_move(struct radeon_device *rdev, unsigned size,
36 				    uint64_t saddr, uint64_t daddr,
37 				    int flag, int n,
38 				    struct reservation_object *resv)
39 {
40 	unsigned long start_jiffies;
41 	unsigned long end_jiffies;
42 	struct radeon_fence *fence = NULL;
43 	int i, r;
44 
45 	start_jiffies = jiffies;
46 	for (i = 0; i < n; i++) {
47 		switch (flag) {
48 		case RADEON_BENCHMARK_COPY_DMA:
49 			fence = radeon_copy_dma(rdev, saddr, daddr,
50 						size / RADEON_GPU_PAGE_SIZE,
51 						resv);
52 			break;
53 		case RADEON_BENCHMARK_COPY_BLIT:
54 			fence = radeon_copy_blit(rdev, saddr, daddr,
55 						 size / RADEON_GPU_PAGE_SIZE,
56 						 resv);
57 			break;
58 		default:
59 			DRM_ERROR("Unknown copy method\n");
60 			return -EINVAL;
61 		}
62 		if (IS_ERR(fence))
63 			return PTR_ERR(fence);
64 
65 		r = radeon_fence_wait(fence, false);
66 		radeon_fence_unref(&fence);
67 		if (r)
68 			return r;
69 	}
70 	end_jiffies = jiffies;
71 	return jiffies_to_msecs(end_jiffies - start_jiffies);
72 }
73 
74 
75 static void radeon_benchmark_log_results(int n, unsigned size,
76 					 unsigned int time,
77 					 unsigned sdomain, unsigned ddomain,
78 					 char *kind)
79 {
80 	unsigned int throughput = (n * (size >> 10)) / time;
81 	DRM_INFO("radeon: %s %u bo moves of %u kB from"
82 		 " %d to %d in %u ms, throughput: %u Mb/s or %u MB/s\n",
83 		 kind, n, size >> 10, sdomain, ddomain, time,
84 		 throughput * 8, throughput);
85 }
86 
87 static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size,
88 				  unsigned sdomain, unsigned ddomain)
89 {
90 	struct radeon_bo *dobj = NULL;
91 	struct radeon_bo *sobj = NULL;
92 	uint64_t saddr, daddr;
93 	int r, n;
94 	int time;
95 
96 	n = RADEON_BENCHMARK_ITERATIONS;
97 	r = radeon_bo_create(rdev, size, PAGE_SIZE, true, sdomain, 0, NULL, NULL, &sobj);
98 	if (r) {
99 		goto out_cleanup;
100 	}
101 	r = radeon_bo_reserve(sobj, false);
102 	if (unlikely(r != 0))
103 		goto out_cleanup;
104 	r = radeon_bo_pin(sobj, sdomain, &saddr);
105 	radeon_bo_unreserve(sobj);
106 	if (r) {
107 		goto out_cleanup;
108 	}
109 	r = radeon_bo_create(rdev, size, PAGE_SIZE, true, ddomain, 0, NULL, NULL, &dobj);
110 	if (r) {
111 		goto out_cleanup;
112 	}
113 	r = radeon_bo_reserve(dobj, false);
114 	if (unlikely(r != 0))
115 		goto out_cleanup;
116 	r = radeon_bo_pin(dobj, ddomain, &daddr);
117 	radeon_bo_unreserve(dobj);
118 	if (r) {
119 		goto out_cleanup;
120 	}
121 
122 	if (rdev->asic->copy.dma) {
123 		time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
124 						RADEON_BENCHMARK_COPY_DMA, n,
125 						dobj->tbo.resv);
126 		if (time < 0)
127 			goto out_cleanup;
128 		if (time > 0)
129 			radeon_benchmark_log_results(n, size, time,
130 						     sdomain, ddomain, "dma");
131 	}
132 
133 	if (rdev->asic->copy.blit) {
134 		time = radeon_benchmark_do_move(rdev, size, saddr, daddr,
135 						RADEON_BENCHMARK_COPY_BLIT, n,
136 						dobj->tbo.resv);
137 		if (time < 0)
138 			goto out_cleanup;
139 		if (time > 0)
140 			radeon_benchmark_log_results(n, size, time,
141 						     sdomain, ddomain, "blit");
142 	}
143 
144 out_cleanup:
145 	if (sobj) {
146 		r = radeon_bo_reserve(sobj, false);
147 		if (likely(r == 0)) {
148 			radeon_bo_unpin(sobj);
149 			radeon_bo_unreserve(sobj);
150 		}
151 		radeon_bo_unref(&sobj);
152 	}
153 	if (dobj) {
154 		r = radeon_bo_reserve(dobj, false);
155 		if (likely(r == 0)) {
156 			radeon_bo_unpin(dobj);
157 			radeon_bo_unreserve(dobj);
158 		}
159 		radeon_bo_unref(&dobj);
160 	}
161 
162 	if (r) {
163 		DRM_ERROR("Error while benchmarking BO move.\n");
164 	}
165 }
166 
167 void radeon_benchmark(struct radeon_device *rdev, int test_number)
168 {
169 	int i;
170 	int common_modes[RADEON_BENCHMARK_COMMON_MODES_N] = {
171 		640 * 480 * 4,
172 		720 * 480 * 4,
173 		800 * 600 * 4,
174 		848 * 480 * 4,
175 		1024 * 768 * 4,
176 		1152 * 768 * 4,
177 		1280 * 720 * 4,
178 		1280 * 800 * 4,
179 		1280 * 854 * 4,
180 		1280 * 960 * 4,
181 		1280 * 1024 * 4,
182 		1440 * 900 * 4,
183 		1400 * 1050 * 4,
184 		1680 * 1050 * 4,
185 		1600 * 1200 * 4,
186 		1920 * 1080 * 4,
187 		1920 * 1200 * 4
188 	};
189 
190 	switch (test_number) {
191 	case 1:
192 		/* simple test, VRAM to GTT and GTT to VRAM */
193 		radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_GTT,
194 				      RADEON_GEM_DOMAIN_VRAM);
195 		radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
196 				      RADEON_GEM_DOMAIN_GTT);
197 		break;
198 	case 2:
199 		/* simple test, VRAM to VRAM */
200 		radeon_benchmark_move(rdev, 1024*1024, RADEON_GEM_DOMAIN_VRAM,
201 				      RADEON_GEM_DOMAIN_VRAM);
202 		break;
203 	case 3:
204 		/* GTT to VRAM, buffer size sweep, powers of 2 */
205 		for (i = 1; i <= 16384; i <<= 1)
206 			radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
207 					      RADEON_GEM_DOMAIN_GTT,
208 					      RADEON_GEM_DOMAIN_VRAM);
209 		break;
210 	case 4:
211 		/* VRAM to GTT, buffer size sweep, powers of 2 */
212 		for (i = 1; i <= 16384; i <<= 1)
213 			radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
214 					      RADEON_GEM_DOMAIN_VRAM,
215 					      RADEON_GEM_DOMAIN_GTT);
216 		break;
217 	case 5:
218 		/* VRAM to VRAM, buffer size sweep, powers of 2 */
219 		for (i = 1; i <= 16384; i <<= 1)
220 			radeon_benchmark_move(rdev, i * RADEON_GPU_PAGE_SIZE,
221 					      RADEON_GEM_DOMAIN_VRAM,
222 					      RADEON_GEM_DOMAIN_VRAM);
223 		break;
224 	case 6:
225 		/* GTT to VRAM, buffer size sweep, common modes */
226 		for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
227 			radeon_benchmark_move(rdev, common_modes[i],
228 					      RADEON_GEM_DOMAIN_GTT,
229 					      RADEON_GEM_DOMAIN_VRAM);
230 		break;
231 	case 7:
232 		/* VRAM to GTT, buffer size sweep, common modes */
233 		for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
234 			radeon_benchmark_move(rdev, common_modes[i],
235 					      RADEON_GEM_DOMAIN_VRAM,
236 					      RADEON_GEM_DOMAIN_GTT);
237 		break;
238 	case 8:
239 		/* VRAM to VRAM, buffer size sweep, common modes */
240 		for (i = 0; i < RADEON_BENCHMARK_COMMON_MODES_N; i++)
241 			radeon_benchmark_move(rdev, common_modes[i],
242 					      RADEON_GEM_DOMAIN_VRAM,
243 					      RADEON_GEM_DOMAIN_VRAM);
244 		break;
245 
246 	default:
247 		DRM_ERROR("Unknown benchmark\n");
248 	}
249 }
250