1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2021 Raspberry Pi
4 */
5
6 #include "v3d_drv.h"
7 #include "v3d_regs.h"
8
9 #define V3D_PERFMONID_MIN 1
10 #define V3D_PERFMONID_MAX U32_MAX
11
12 static const struct v3d_perf_counter_desc v3d_v42_performance_counters[] = {
13 {"FEP", "FEP-valid-primitives-no-rendered-pixels", "[FEP] Valid primitives that result in no rendered pixels, for all rendered tiles"},
14 {"FEP", "FEP-valid-primitives-rendered-pixels", "[FEP] Valid primitives for all rendered tiles (primitives may be counted in more than one tile)"},
15 {"FEP", "FEP-clipped-quads", "[FEP] Early-Z/Near/Far clipped quads"},
16 {"FEP", "FEP-valid-quads", "[FEP] Valid quads"},
17 {"TLB", "TLB-quads-not-passing-stencil-test", "[TLB] Quads with no pixels passing the stencil test"},
18 {"TLB", "TLB-quads-not-passing-z-and-stencil-test", "[TLB] Quads with no pixels passing the Z and stencil tests"},
19 {"TLB", "TLB-quads-passing-z-and-stencil-test", "[TLB] Quads with any pixels passing the Z and stencil tests"},
20 {"TLB", "TLB-quads-with-zero-coverage", "[TLB] Quads with all pixels having zero coverage"},
21 {"TLB", "TLB-quads-with-non-zero-coverage", "[TLB] Quads with any pixels having non-zero coverage"},
22 {"TLB", "TLB-quads-written-to-color-buffer", "[TLB] Quads with valid pixels written to colour buffer"},
23 {"PTB", "PTB-primitives-discarded-outside-viewport", "[PTB] Primitives discarded by being outside the viewport"},
24 {"PTB", "PTB-primitives-need-clipping", "[PTB] Primitives that need clipping"},
25 {"PTB", "PTB-primitives-discarded-reversed", "[PTB] Primitives that are discarded because they are reversed"},
26 {"QPU", "QPU-total-idle-clk-cycles", "[QPU] Total idle clock cycles for all QPUs"},
27 {"QPU", "QPU-total-active-clk-cycles-vertex-coord-shading", "[QPU] Total active clock cycles for all QPUs doing vertex/coordinate/user shading (counts only when QPU is not stalled)"},
28 {"QPU", "QPU-total-active-clk-cycles-fragment-shading", "[QPU] Total active clock cycles for all QPUs doing fragment shading (counts only when QPU is not stalled)"},
29 {"QPU", "QPU-total-clk-cycles-executing-valid-instr", "[QPU] Total clock cycles for all QPUs executing valid instructions"},
30 {"QPU", "QPU-total-clk-cycles-waiting-TMU", "[QPU] Total clock cycles for all QPUs stalled waiting for TMUs only (counter won't increment if QPU also stalling for another reason)"},
31 {"QPU", "QPU-total-clk-cycles-waiting-scoreboard", "[QPU] Total clock cycles for all QPUs stalled waiting for Scoreboard only (counter won't increment if QPU also stalling for another reason)"},
32 {"QPU", "QPU-total-clk-cycles-waiting-varyings", "[QPU] Total clock cycles for all QPUs stalled waiting for Varyings only (counter won't increment if QPU also stalling for another reason)"},
33 {"QPU", "QPU-total-instr-cache-hit", "[QPU] Total instruction cache hits for all slices"},
34 {"QPU", "QPU-total-instr-cache-miss", "[QPU] Total instruction cache misses for all slices"},
35 {"QPU", "QPU-total-uniform-cache-hit", "[QPU] Total uniforms cache hits for all slices"},
36 {"QPU", "QPU-total-uniform-cache-miss", "[QPU] Total uniforms cache misses for all slices"},
37 {"TMU", "TMU-total-text-quads-access", "[TMU] Total texture cache accesses"},
38 {"TMU", "TMU-total-text-cache-miss", "[TMU] Total texture cache misses (number of fetches from memory/L2cache)"},
39 {"VPM", "VPM-total-clk-cycles-VDW-stalled", "[VPM] Total clock cycles VDW is stalled waiting for VPM access"},
40 {"VPM", "VPM-total-clk-cycles-VCD-stalled", "[VPM] Total clock cycles VCD is stalled waiting for VPM access"},
41 {"CLE", "CLE-bin-thread-active-cycles", "[CLE] Bin thread active cycles"},
42 {"CLE", "CLE-render-thread-active-cycles", "[CLE] Render thread active cycles"},
43 {"L2T", "L2T-total-cache-hit", "[L2T] Total Level 2 cache hits"},
44 {"L2T", "L2T-total-cache-miss", "[L2T] Total Level 2 cache misses"},
45 {"CORE", "cycle-count", "[CORE] Cycle counter"},
46 {"QPU", "QPU-total-clk-cycles-waiting-vertex-coord-shading", "[QPU] Total stalled clock cycles for all QPUs doing vertex/coordinate/user shading"},
47 {"QPU", "QPU-total-clk-cycles-waiting-fragment-shading", "[QPU] Total stalled clock cycles for all QPUs doing fragment shading"},
48 {"PTB", "PTB-primitives-binned", "[PTB] Total primitives binned"},
49 {"AXI", "AXI-writes-seen-watch-0", "[AXI] Writes seen by watch 0"},
50 {"AXI", "AXI-reads-seen-watch-0", "[AXI] Reads seen by watch 0"},
51 {"AXI", "AXI-writes-stalled-seen-watch-0", "[AXI] Write stalls seen by watch 0"},
52 {"AXI", "AXI-reads-stalled-seen-watch-0", "[AXI] Read stalls seen by watch 0"},
53 {"AXI", "AXI-write-bytes-seen-watch-0", "[AXI] Total bytes written seen by watch 0"},
54 {"AXI", "AXI-read-bytes-seen-watch-0", "[AXI] Total bytes read seen by watch 0"},
55 {"AXI", "AXI-writes-seen-watch-1", "[AXI] Writes seen by watch 1"},
56 {"AXI", "AXI-reads-seen-watch-1", "[AXI] Reads seen by watch 1"},
57 {"AXI", "AXI-writes-stalled-seen-watch-1", "[AXI] Write stalls seen by watch 1"},
58 {"AXI", "AXI-reads-stalled-seen-watch-1", "[AXI] Read stalls seen by watch 1"},
59 {"AXI", "AXI-write-bytes-seen-watch-1", "[AXI] Total bytes written seen by watch 1"},
60 {"AXI", "AXI-read-bytes-seen-watch-1", "[AXI] Total bytes read seen by watch 1"},
61 {"TLB", "TLB-partial-quads-written-to-color-buffer", "[TLB] Partial quads written to the colour buffer"},
62 {"TMU", "TMU-total-config-access", "[TMU] Total config accesses"},
63 {"L2T", "L2T-no-id-stalled", "[L2T] No ID stall"},
64 {"L2T", "L2T-command-queue-stalled", "[L2T] Command queue full stall"},
65 {"L2T", "L2T-TMU-writes", "[L2T] TMU write accesses"},
66 {"TMU", "TMU-active-cycles", "[TMU] Active cycles"},
67 {"TMU", "TMU-stalled-cycles", "[TMU] Stalled cycles"},
68 {"CLE", "CLE-thread-active-cycles", "[CLE] Bin or render thread active cycles"},
69 {"L2T", "L2T-TMU-reads", "[L2T] TMU read accesses"},
70 {"L2T", "L2T-CLE-reads", "[L2T] CLE read accesses"},
71 {"L2T", "L2T-VCD-reads", "[L2T] VCD read accesses"},
72 {"L2T", "L2T-TMU-config-reads", "[L2T] TMU CFG read accesses"},
73 {"L2T", "L2T-SLC0-reads", "[L2T] SLC0 read accesses"},
74 {"L2T", "L2T-SLC1-reads", "[L2T] SLC1 read accesses"},
75 {"L2T", "L2T-SLC2-reads", "[L2T] SLC2 read accesses"},
76 {"L2T", "L2T-TMU-write-miss", "[L2T] TMU write misses"},
77 {"L2T", "L2T-TMU-read-miss", "[L2T] TMU read misses"},
78 {"L2T", "L2T-CLE-read-miss", "[L2T] CLE read misses"},
79 {"L2T", "L2T-VCD-read-miss", "[L2T] VCD read misses"},
80 {"L2T", "L2T-TMU-config-read-miss", "[L2T] TMU CFG read misses"},
81 {"L2T", "L2T-SLC0-read-miss", "[L2T] SLC0 read misses"},
82 {"L2T", "L2T-SLC1-read-miss", "[L2T] SLC1 read misses"},
83 {"L2T", "L2T-SLC2-read-miss", "[L2T] SLC2 read misses"},
84 {"CORE", "core-memory-writes", "[CORE] Total memory writes"},
85 {"L2T", "L2T-memory-writes", "[L2T] Total memory writes"},
86 {"PTB", "PTB-memory-writes", "[PTB] Total memory writes"},
87 {"TLB", "TLB-memory-writes", "[TLB] Total memory writes"},
88 {"CORE", "core-memory-reads", "[CORE] Total memory reads"},
89 {"L2T", "L2T-memory-reads", "[L2T] Total memory reads"},
90 {"PTB", "PTB-memory-reads", "[PTB] Total memory reads"},
91 {"PSE", "PSE-memory-reads", "[PSE] Total memory reads"},
92 {"TLB", "TLB-memory-reads", "[TLB] Total memory reads"},
93 {"GMP", "GMP-memory-reads", "[GMP] Total memory reads"},
94 {"PTB", "PTB-memory-words-writes", "[PTB] Total memory words written"},
95 {"TLB", "TLB-memory-words-writes", "[TLB] Total memory words written"},
96 {"PSE", "PSE-memory-words-reads", "[PSE] Total memory words read"},
97 {"TLB", "TLB-memory-words-reads", "[TLB] Total memory words read"},
98 {"TMU", "TMU-MRU-hits", "[TMU] Total MRU hits"},
99 {"CORE", "compute-active-cycles", "[CORE] Compute active cycles"},
100 };
101
102 static const struct v3d_perf_counter_desc v3d_v71_performance_counters[] = {
103 {"CORE", "cycle-count", "[CORE] Cycle counter"},
104 {"CORE", "core-active", "[CORE] Bin/Render/Compute active cycles"},
105 {"CLE", "CLE-bin-thread-active-cycles", "[CLE] Bin thread active cycles"},
106 {"CLE", "CLE-render-thread-active-cycles", "[CLE] Render thread active cycles"},
107 {"CORE", "compute-active-cycles", "[CORE] Compute active cycles"},
108 {"FEP", "FEP-valid-primitives-no-rendered-pixels", "[FEP] Valid primitives that result in no rendered pixels, for all rendered tiles"},
109 {"FEP", "FEP-valid-primitives-rendered-pixels", "[FEP] Valid primitives for all rendered tiles (primitives may be counted in more than one tile)"},
110 {"FEP", "FEP-clipped-quads", "[FEP] Early-Z/Near/Far clipped quads"},
111 {"FEP", "FEP-valid-quads", "[FEP] Valid quads"},
112 {"TLB", "TLB-quads-not-passing-stencil-test", "[TLB] Quads with no pixels passing the stencil test"},
113 {"TLB", "TLB-quads-not-passing-z-and-stencil-test", "[TLB] Quads with no pixels passing the Z and stencil tests"},
114 {"TLB", "TLB-quads-passing-z-and-stencil-test", "[TLB] Quads with any pixels passing the Z and stencil tests"},
115 {"TLB", "TLB-quads-written-to-color-buffer", "[TLB] Quads with valid pixels written to colour buffer"},
116 {"TLB", "TLB-partial-quads-written-to-color-buffer", "[TLB] Partial quads written to the colour buffer"},
117 {"PTB", "PTB-primitives-need-clipping", "[PTB] Primitives that need clipping"},
118 {"PTB", "PTB-primitives-discarded-outside-viewport", "[PTB] Primitives discarded by being outside the viewport"},
119 {"PTB", "PTB-primitives-binned", "[PTB] Total primitives binned"},
120 {"PTB", "PTB-primitives-discarded-reversed", "[PTB] Primitives that are discarded because they are reversed"},
121 {"QPU", "QPU-total-instr-cache-hit", "[QPU] Total instruction cache hits for all slices"},
122 {"QPU", "QPU-total-instr-cache-miss", "[QPU] Total instruction cache misses for all slices"},
123 {"QPU", "QPU-total-uniform-cache-hit", "[QPU] Total uniforms cache hits for all slices"},
124 {"QPU", "QPU-total-uniform-cache-miss", "[QPU] Total uniforms cache misses for all slices"},
125 {"TMU", "TMU-active-cycles", "[TMU] Active cycles"},
126 {"TMU", "TMU-stalled-cycles", "[TMU] Stalled cycles"},
127 {"TMU", "TMU-total-text-quads-access", "[TMU] Total texture cache accesses"},
128 {"TMU", "TMU-cache-x4-active-cycles", "[TMU] Cache active cycles for x4 access"},
129 {"TMU", "TMU-cache-x4-stalled-cycles", "[TMU] Cache stalled cycles for x4 access"},
130 {"TMU", "TMU-total-text-quads-x4-access", "[TMU] Total texture cache x4 access"},
131 {"L2T", "L2T-total-cache-hit", "[L2T] Total Level 2 cache hits"},
132 {"L2T", "L2T-total-cache-miss", "[L2T] Total Level 2 cache misses"},
133 {"L2T", "L2T-local", "[L2T] Local mode access"},
134 {"L2T", "L2T-writeback", "[L2T] Writeback"},
135 {"L2T", "L2T-zero", "[L2T] Zero"},
136 {"L2T", "L2T-merge", "[L2T] Merge"},
137 {"L2T", "L2T-fill", "[L2T] Fill"},
138 {"L2T", "L2T-stalls-no-wid", "[L2T] Stalls because no WID available"},
139 {"L2T", "L2T-stalls-no-rid", "[L2T] Stalls because no RID available"},
140 {"L2T", "L2T-stalls-queue-full", "[L2T] Stalls because internal queue full"},
141 {"L2T", "L2T-stalls-wrightback", "[L2T] Stalls because writeback in flight"},
142 {"L2T", "L2T-stalls-mem", "[L2T] Stalls because AXI blocks read"},
143 {"L2T", "L2T-stalls-fill", "[L2T] Stalls because fill pending for victim cache-line"},
144 {"L2T", "L2T-hitq", "[L2T] Sent request via hit queue"},
145 {"L2T", "L2T-hitq-full", "[L2T] Sent request via main queue because hit queue is full"},
146 {"L2T", "L2T-stalls-read-data", "[L2T] Stalls because waiting for data from SDRAM"},
147 {"L2T", "L2T-TMU-read-hits", "[L2T] TMU read hits"},
148 {"L2T", "L2T-TMU-read-miss", "[L2T] TMU read misses"},
149 {"L2T", "L2T-VCD-read-hits", "[L2T] VCD read hits"},
150 {"L2T", "L2T-VCD-read-miss", "[L2T] VCD read misses"},
151 {"L2T", "L2T-SLC-read-hits", "[L2T] SLC read hits (all slices)"},
152 {"L2T", "L2T-SLC-read-miss", "[L2T] SLC read misses (all slices)"},
153 {"AXI", "AXI-writes-seen-watch-0", "[AXI] Writes seen by watch 0"},
154 {"AXI", "AXI-reads-seen-watch-0", "[AXI] Reads seen by watch 0"},
155 {"AXI", "AXI-writes-stalled-seen-watch-0", "[AXI] Write stalls seen by watch 0"},
156 {"AXI", "AXI-reads-stalled-seen-watch-0", "[AXI] Read stalls seen by watch 0"},
157 {"AXI", "AXI-write-bytes-seen-watch-0", "[AXI] Total bytes written seen by watch 0"},
158 {"AXI", "AXI-read-bytes-seen-watch-0", "[AXI] Total bytes read seen by watch 0"},
159 {"AXI", "AXI-writes-seen-watch-1", "[AXI] Writes seen by watch 1"},
160 {"AXI", "AXI-reads-seen-watch-1", "[AXI] Reads seen by watch 1"},
161 {"AXI", "AXI-writes-stalled-seen-watch-1", "[AXI] Write stalls seen by watch 1"},
162 {"AXI", "AXI-reads-stalled-seen-watch-1", "[AXI] Read stalls seen by watch 1"},
163 {"AXI", "AXI-write-bytes-seen-watch-1", "[AXI] Total bytes written seen by watch 1"},
164 {"AXI", "AXI-read-bytes-seen-watch-1", "[AXI] Total bytes read seen by watch 1"},
165 {"CORE", "core-memory-writes", "[CORE] Total memory writes"},
166 {"L2T", "L2T-memory-writes", "[L2T] Total memory writes"},
167 {"PTB", "PTB-memory-writes", "[PTB] Total memory writes"},
168 {"TLB", "TLB-memory-writes", "[TLB] Total memory writes"},
169 {"CORE", "core-memory-reads", "[CORE] Total memory reads"},
170 {"L2T", "L2T-memory-reads", "[L2T] Total memory reads"},
171 {"PTB", "PTB-memory-reads", "[PTB] Total memory reads"},
172 {"PSE", "PSE-memory-reads", "[PSE] Total memory reads"},
173 {"TLB", "TLB-memory-reads", "[TLB] Total memory reads"},
174 {"PTB", "PTB-memory-words-writes", "[PTB] Total memory words written"},
175 {"TLB", "TLB-memory-words-writes", "[TLB] Total memory words written"},
176 {"PSE", "PSE-memory-words-reads", "[PSE] Total memory words read"},
177 {"TLB", "TLB-memory-words-reads", "[TLB] Total memory words read"},
178 {"AXI", "AXI-read-trans", "[AXI] Read transaction count"},
179 {"AXI", "AXI-write-trans", "[AXI] Write transaction count"},
180 {"AXI", "AXI-read-wait-cycles", "[AXI] Read total wait cycles"},
181 {"AXI", "AXI-write-wait-cycles", "[AXI] Write total wait cycles"},
182 {"AXI", "AXI-max-outstanding-reads", "[AXI] Maximum outstanding read transactions"},
183 {"AXI", "AXI-max-outstanding-writes", "[AXI] Maximum outstanding write transactions"},
184 {"QPU", "QPU-wait-bubble", "[QPU] Pipeline bubble in qcycles due all threads waiting"},
185 {"QPU", "QPU-ic-miss-bubble", "[QPU] Pipeline bubble in qcycles due instruction-cache miss"},
186 {"QPU", "QPU-active", "[QPU] Executed shader instruction"},
187 {"QPU", "QPU-total-active-clk-cycles-fragment-shading", "[QPU] Total active clock cycles for all QPUs doing fragment shading (counts only when QPU is not stalled)"},
188 {"QPU", "QPU-stalls", "[QPU] Stalled qcycles executing shader instruction"},
189 {"QPU", "QPU-total-clk-cycles-waiting-fragment-shading", "[QPU] Total stalled clock cycles for all QPUs doing fragment shading"},
190 {"QPU", "QPU-stalls-TMU", "[QPU] Stalled qcycles waiting for TMU"},
191 {"QPU", "QPU-stalls-TLB", "[QPU] Stalled qcycles waiting for TLB"},
192 {"QPU", "QPU-stalls-VPM", "[QPU] Stalled qcycles waiting for VPM"},
193 {"QPU", "QPU-stalls-uniforms", "[QPU] Stalled qcycles waiting for uniforms"},
194 {"QPU", "QPU-stalls-SFU", "[QPU] Stalled qcycles waiting for SFU"},
195 {"QPU", "QPU-stalls-other", "[QPU] Stalled qcycles waiting for any other reason (vary/W/Z)"},
196 };
197
v3d_perfmon_init(struct v3d_dev * v3d)198 void v3d_perfmon_init(struct v3d_dev *v3d)
199 {
200 const struct v3d_perf_counter_desc *counters = NULL;
201 unsigned int max = 0;
202
203 if (v3d->ver >= 71) {
204 counters = v3d_v71_performance_counters;
205 max = ARRAY_SIZE(v3d_v71_performance_counters);
206 } else if (v3d->ver >= 42) {
207 counters = v3d_v42_performance_counters;
208 max = ARRAY_SIZE(v3d_v42_performance_counters);
209 }
210
211 v3d->perfmon_info.max_counters = max;
212 v3d->perfmon_info.counters = counters;
213 }
214
v3d_perfmon_get(struct v3d_perfmon * perfmon)215 void v3d_perfmon_get(struct v3d_perfmon *perfmon)
216 {
217 if (perfmon)
218 refcount_inc(&perfmon->refcnt);
219 }
220
v3d_perfmon_put(struct v3d_perfmon * perfmon)221 void v3d_perfmon_put(struct v3d_perfmon *perfmon)
222 {
223 if (perfmon && refcount_dec_and_test(&perfmon->refcnt)) {
224 mutex_destroy(&perfmon->lock);
225 kfree(perfmon);
226 }
227 }
228
v3d_perfmon_start(struct v3d_dev * v3d,struct v3d_perfmon * perfmon)229 void v3d_perfmon_start(struct v3d_dev *v3d, struct v3d_perfmon *perfmon)
230 {
231 unsigned int i;
232 u32 mask;
233 u8 ncounters;
234
235 if (WARN_ON_ONCE(!perfmon || v3d->active_perfmon))
236 return;
237
238 ncounters = perfmon->ncounters;
239 mask = GENMASK(ncounters - 1, 0);
240
241 for (i = 0; i < ncounters; i++) {
242 u32 source = i / 4;
243 u32 channel = V3D_SET_FIELD(perfmon->counters[i], V3D_PCTR_S0);
244
245 i++;
246 channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
247 V3D_PCTR_S1);
248 i++;
249 channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
250 V3D_PCTR_S2);
251 i++;
252 channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
253 V3D_PCTR_S3);
254 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_SRC_X(source), channel);
255 }
256
257 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_CLR, mask);
258 V3D_CORE_WRITE(0, V3D_PCTR_0_OVERFLOW, mask);
259 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, mask);
260
261 v3d->active_perfmon = perfmon;
262 }
263
v3d_perfmon_stop(struct v3d_dev * v3d,struct v3d_perfmon * perfmon,bool capture)264 void v3d_perfmon_stop(struct v3d_dev *v3d, struct v3d_perfmon *perfmon,
265 bool capture)
266 {
267 unsigned int i;
268
269 if (!perfmon || !v3d->active_perfmon)
270 return;
271
272 mutex_lock(&perfmon->lock);
273 if (perfmon != v3d->active_perfmon) {
274 mutex_unlock(&perfmon->lock);
275 return;
276 }
277
278 if (capture)
279 for (i = 0; i < perfmon->ncounters; i++)
280 perfmon->values[i] += V3D_CORE_READ(0, V3D_PCTR_0_PCTRX(i));
281
282 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, 0);
283
284 v3d->active_perfmon = NULL;
285 mutex_unlock(&perfmon->lock);
286 }
287
v3d_perfmon_find(struct v3d_file_priv * v3d_priv,int id)288 struct v3d_perfmon *v3d_perfmon_find(struct v3d_file_priv *v3d_priv, int id)
289 {
290 struct v3d_perfmon *perfmon;
291
292 mutex_lock(&v3d_priv->perfmon.lock);
293 perfmon = idr_find(&v3d_priv->perfmon.idr, id);
294 v3d_perfmon_get(perfmon);
295 mutex_unlock(&v3d_priv->perfmon.lock);
296
297 return perfmon;
298 }
299
v3d_perfmon_open_file(struct v3d_file_priv * v3d_priv)300 void v3d_perfmon_open_file(struct v3d_file_priv *v3d_priv)
301 {
302 mutex_init(&v3d_priv->perfmon.lock);
303 idr_init_base(&v3d_priv->perfmon.idr, 1);
304 }
305
v3d_perfmon_idr_del(int id,void * elem,void * data)306 static int v3d_perfmon_idr_del(int id, void *elem, void *data)
307 {
308 struct v3d_perfmon *perfmon = elem;
309 struct v3d_dev *v3d = (struct v3d_dev *)data;
310
311 /* If the active perfmon is being destroyed, stop it first */
312 if (perfmon == v3d->active_perfmon)
313 v3d_perfmon_stop(v3d, perfmon, false);
314
315 v3d_perfmon_put(perfmon);
316
317 return 0;
318 }
319
v3d_perfmon_close_file(struct v3d_file_priv * v3d_priv)320 void v3d_perfmon_close_file(struct v3d_file_priv *v3d_priv)
321 {
322 struct v3d_dev *v3d = v3d_priv->v3d;
323
324 mutex_lock(&v3d_priv->perfmon.lock);
325 idr_for_each(&v3d_priv->perfmon.idr, v3d_perfmon_idr_del, v3d);
326 idr_destroy(&v3d_priv->perfmon.idr);
327 mutex_unlock(&v3d_priv->perfmon.lock);
328 mutex_destroy(&v3d_priv->perfmon.lock);
329 }
330
v3d_perfmon_create_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)331 int v3d_perfmon_create_ioctl(struct drm_device *dev, void *data,
332 struct drm_file *file_priv)
333 {
334 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
335 struct drm_v3d_perfmon_create *req = data;
336 struct v3d_dev *v3d = v3d_priv->v3d;
337 struct v3d_perfmon *perfmon;
338 unsigned int i;
339 int ret;
340
341 /* Number of monitored counters cannot exceed HW limits. */
342 if (req->ncounters > DRM_V3D_MAX_PERF_COUNTERS ||
343 !req->ncounters)
344 return -EINVAL;
345
346 /* Make sure all counters are valid. */
347 for (i = 0; i < req->ncounters; i++) {
348 if (req->counters[i] >= v3d->perfmon_info.max_counters)
349 return -EINVAL;
350 }
351
352 perfmon = kzalloc(struct_size(perfmon, values, req->ncounters),
353 GFP_KERNEL);
354 if (!perfmon)
355 return -ENOMEM;
356
357 for (i = 0; i < req->ncounters; i++)
358 perfmon->counters[i] = req->counters[i];
359
360 perfmon->ncounters = req->ncounters;
361
362 refcount_set(&perfmon->refcnt, 1);
363 mutex_init(&perfmon->lock);
364
365 mutex_lock(&v3d_priv->perfmon.lock);
366 ret = idr_alloc(&v3d_priv->perfmon.idr, perfmon, V3D_PERFMONID_MIN,
367 V3D_PERFMONID_MAX, GFP_KERNEL);
368 mutex_unlock(&v3d_priv->perfmon.lock);
369
370 if (ret < 0) {
371 mutex_destroy(&perfmon->lock);
372 kfree(perfmon);
373 return ret;
374 }
375
376 req->id = ret;
377
378 return 0;
379 }
380
v3d_perfmon_destroy_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)381 int v3d_perfmon_destroy_ioctl(struct drm_device *dev, void *data,
382 struct drm_file *file_priv)
383 {
384 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
385 struct drm_v3d_perfmon_destroy *req = data;
386 struct v3d_perfmon *perfmon;
387
388 mutex_lock(&v3d_priv->perfmon.lock);
389 perfmon = idr_remove(&v3d_priv->perfmon.idr, req->id);
390 mutex_unlock(&v3d_priv->perfmon.lock);
391
392 if (!perfmon)
393 return -EINVAL;
394
395 v3d_perfmon_put(perfmon);
396
397 return 0;
398 }
399
v3d_perfmon_get_values_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)400 int v3d_perfmon_get_values_ioctl(struct drm_device *dev, void *data,
401 struct drm_file *file_priv)
402 {
403 struct v3d_dev *v3d = to_v3d_dev(dev);
404 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
405 struct drm_v3d_perfmon_get_values *req = data;
406 struct v3d_perfmon *perfmon;
407 int ret = 0;
408
409 if (req->pad != 0)
410 return -EINVAL;
411
412 mutex_lock(&v3d_priv->perfmon.lock);
413 perfmon = idr_find(&v3d_priv->perfmon.idr, req->id);
414 v3d_perfmon_get(perfmon);
415 mutex_unlock(&v3d_priv->perfmon.lock);
416
417 if (!perfmon)
418 return -EINVAL;
419
420 v3d_perfmon_stop(v3d, perfmon, true);
421
422 if (copy_to_user(u64_to_user_ptr(req->values_ptr), perfmon->values,
423 perfmon->ncounters * sizeof(u64)))
424 ret = -EFAULT;
425
426 v3d_perfmon_put(perfmon);
427
428 return ret;
429 }
430
v3d_perfmon_get_counter_ioctl(struct drm_device * dev,void * data,struct drm_file * file_priv)431 int v3d_perfmon_get_counter_ioctl(struct drm_device *dev, void *data,
432 struct drm_file *file_priv)
433 {
434 struct drm_v3d_perfmon_get_counter *req = data;
435 struct v3d_dev *v3d = to_v3d_dev(dev);
436 const struct v3d_perf_counter_desc *counter;
437
438 for (int i = 0; i < ARRAY_SIZE(req->reserved); i++) {
439 if (req->reserved[i] != 0)
440 return -EINVAL;
441 }
442
443 if (!v3d->perfmon_info.max_counters)
444 return -EOPNOTSUPP;
445
446 /* Make sure that the counter ID is valid */
447 if (req->counter >= v3d->perfmon_info.max_counters)
448 return -EINVAL;
449
450 counter = &v3d->perfmon_info.counters[req->counter];
451
452 strscpy(req->name, counter->name, sizeof(req->name));
453 strscpy(req->category, counter->category, sizeof(req->category));
454 strscpy(req->description, counter->description, sizeof(req->description));
455
456 return 0;
457 }
458