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
12static 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
102static 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
198void 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 >= V3D_GEN_71) {
204 counters = v3d_v71_performance_counters;
205 max = ARRAY_SIZE(v3d_v71_performance_counters);
206 } else if (v3d->ver >= V3D_GEN_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
215void v3d_perfmon_get(struct v3d_perfmon *perfmon)
216{
217 if (perfmon)
218 refcount_inc(r: &perfmon->refcnt);
219}
220
221void v3d_perfmon_put(struct v3d_perfmon *perfmon)
222{
223 if (perfmon && refcount_dec_and_test(r: &perfmon->refcnt)) {
224 mutex_destroy(lock: &perfmon->lock);
225 kfree(objp: perfmon);
226 }
227}
228
229void 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_VER(perfmon->counters[i], V3D_PCTR_S0,
244 v3d->ver);
245
246 i++;
247 channel |= V3D_SET_FIELD_VER(i < ncounters ? perfmon->counters[i] : 0,
248 V3D_PCTR_S1, v3d->ver);
249 i++;
250 channel |= V3D_SET_FIELD_VER(i < ncounters ? perfmon->counters[i] : 0,
251 V3D_PCTR_S2, v3d->ver);
252 i++;
253 channel |= V3D_SET_FIELD_VER(i < ncounters ? perfmon->counters[i] : 0,
254 V3D_PCTR_S3, v3d->ver);
255 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_SRC_X(source), channel);
256 }
257
258 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, mask);
259 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_CLR, mask);
260 V3D_CORE_WRITE(0, V3D_PCTR_0_OVERFLOW, mask);
261
262 v3d->active_perfmon = perfmon;
263}
264
265void v3d_perfmon_stop(struct v3d_dev *v3d, struct v3d_perfmon *perfmon,
266 bool capture)
267{
268 unsigned int i;
269
270 if (!perfmon || !v3d->active_perfmon)
271 return;
272
273 mutex_lock(&perfmon->lock);
274 if (perfmon != v3d->active_perfmon) {
275 mutex_unlock(lock: &perfmon->lock);
276 return;
277 }
278
279 if (capture)
280 for (i = 0; i < perfmon->ncounters; i++)
281 perfmon->values[i] += V3D_CORE_READ(0, V3D_PCTR_0_PCTRX(i));
282
283 V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, 0);
284
285 v3d->active_perfmon = NULL;
286 mutex_unlock(lock: &perfmon->lock);
287}
288
289struct v3d_perfmon *v3d_perfmon_find(struct v3d_file_priv *v3d_priv, int id)
290{
291 struct v3d_perfmon *perfmon;
292
293 mutex_lock(&v3d_priv->perfmon.lock);
294 perfmon = idr_find(&v3d_priv->perfmon.idr, id);
295 v3d_perfmon_get(perfmon);
296 mutex_unlock(lock: &v3d_priv->perfmon.lock);
297
298 return perfmon;
299}
300
301void v3d_perfmon_open_file(struct v3d_file_priv *v3d_priv)
302{
303 mutex_init(&v3d_priv->perfmon.lock);
304 idr_init_base(idr: &v3d_priv->perfmon.idr, base: 1);
305}
306
307static int v3d_perfmon_idr_del(int id, void *elem, void *data)
308{
309 struct v3d_perfmon *perfmon = elem;
310 struct v3d_dev *v3d = (struct v3d_dev *)data;
311
312 /* If the active perfmon is being destroyed, stop it first */
313 if (perfmon == v3d->active_perfmon)
314 v3d_perfmon_stop(v3d, perfmon, capture: false);
315
316 /* If the global perfmon is being destroyed, set it to NULL */
317 cmpxchg(&v3d->global_perfmon, perfmon, NULL);
318
319 v3d_perfmon_put(perfmon);
320
321 return 0;
322}
323
324void v3d_perfmon_close_file(struct v3d_file_priv *v3d_priv)
325{
326 struct v3d_dev *v3d = v3d_priv->v3d;
327
328 mutex_lock(&v3d_priv->perfmon.lock);
329 idr_for_each(&v3d_priv->perfmon.idr, fn: v3d_perfmon_idr_del, data: v3d);
330 idr_destroy(&v3d_priv->perfmon.idr);
331 mutex_unlock(lock: &v3d_priv->perfmon.lock);
332 mutex_destroy(lock: &v3d_priv->perfmon.lock);
333}
334
335int v3d_perfmon_create_ioctl(struct drm_device *dev, void *data,
336 struct drm_file *file_priv)
337{
338 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
339 struct drm_v3d_perfmon_create *req = data;
340 struct v3d_dev *v3d = v3d_priv->v3d;
341 struct v3d_perfmon *perfmon;
342 unsigned int i;
343 int ret;
344
345 /* Number of monitored counters cannot exceed HW limits. */
346 if (req->ncounters > DRM_V3D_MAX_PERF_COUNTERS ||
347 !req->ncounters)
348 return -EINVAL;
349
350 /* Make sure all counters are valid. */
351 for (i = 0; i < req->ncounters; i++) {
352 if (req->counters[i] >= v3d->perfmon_info.max_counters)
353 return -EINVAL;
354 }
355
356 perfmon = kzalloc(struct_size(perfmon, values, req->ncounters),
357 GFP_KERNEL);
358 if (!perfmon)
359 return -ENOMEM;
360
361 for (i = 0; i < req->ncounters; i++)
362 perfmon->counters[i] = req->counters[i];
363
364 perfmon->ncounters = req->ncounters;
365
366 refcount_set(r: &perfmon->refcnt, n: 1);
367 mutex_init(&perfmon->lock);
368
369 mutex_lock(&v3d_priv->perfmon.lock);
370 ret = idr_alloc(&v3d_priv->perfmon.idr, ptr: perfmon, V3D_PERFMONID_MIN,
371 V3D_PERFMONID_MAX, GFP_KERNEL);
372 mutex_unlock(lock: &v3d_priv->perfmon.lock);
373
374 if (ret < 0) {
375 mutex_destroy(lock: &perfmon->lock);
376 kfree(objp: perfmon);
377 return ret;
378 }
379
380 req->id = ret;
381
382 return 0;
383}
384
385int v3d_perfmon_destroy_ioctl(struct drm_device *dev, void *data,
386 struct drm_file *file_priv)
387{
388 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
389 struct drm_v3d_perfmon_destroy *req = data;
390 struct v3d_dev *v3d = v3d_priv->v3d;
391 struct v3d_perfmon *perfmon;
392
393 mutex_lock(&v3d_priv->perfmon.lock);
394 perfmon = idr_remove(&v3d_priv->perfmon.idr, id: req->id);
395 mutex_unlock(lock: &v3d_priv->perfmon.lock);
396
397 if (!perfmon)
398 return -EINVAL;
399
400 /* If the active perfmon is being destroyed, stop it first */
401 if (perfmon == v3d->active_perfmon)
402 v3d_perfmon_stop(v3d, perfmon, capture: false);
403
404 /* If the global perfmon is being destroyed, set it to NULL */
405 cmpxchg(&v3d->global_perfmon, perfmon, NULL);
406
407 v3d_perfmon_put(perfmon);
408
409 return 0;
410}
411
412int v3d_perfmon_get_values_ioctl(struct drm_device *dev, void *data,
413 struct drm_file *file_priv)
414{
415 struct v3d_dev *v3d = to_v3d_dev(dev);
416 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
417 struct drm_v3d_perfmon_get_values *req = data;
418 struct v3d_perfmon *perfmon;
419 int ret = 0;
420
421 if (req->pad != 0)
422 return -EINVAL;
423
424 perfmon = v3d_perfmon_find(v3d_priv, id: req->id);
425 if (!perfmon)
426 return -EINVAL;
427
428 v3d_perfmon_stop(v3d, perfmon, capture: true);
429
430 if (copy_to_user(u64_to_user_ptr(req->values_ptr), from: perfmon->values,
431 n: perfmon->ncounters * sizeof(u64)))
432 ret = -EFAULT;
433
434 v3d_perfmon_put(perfmon);
435
436 return ret;
437}
438
439int v3d_perfmon_get_counter_ioctl(struct drm_device *dev, void *data,
440 struct drm_file *file_priv)
441{
442 struct drm_v3d_perfmon_get_counter *req = data;
443 struct v3d_dev *v3d = to_v3d_dev(dev);
444 const struct v3d_perf_counter_desc *counter;
445
446 for (int i = 0; i < ARRAY_SIZE(req->reserved); i++) {
447 if (req->reserved[i] != 0)
448 return -EINVAL;
449 }
450
451 if (!v3d->perfmon_info.max_counters)
452 return -EOPNOTSUPP;
453
454 /* Make sure that the counter ID is valid */
455 if (req->counter >= v3d->perfmon_info.max_counters)
456 return -EINVAL;
457
458 counter = &v3d->perfmon_info.counters[req->counter];
459
460 strscpy(req->name, counter->name, sizeof(req->name));
461 strscpy(req->category, counter->category, sizeof(req->category));
462 strscpy(req->description, counter->description, sizeof(req->description));
463
464 return 0;
465}
466
467int v3d_perfmon_set_global_ioctl(struct drm_device *dev, void *data,
468 struct drm_file *file_priv)
469{
470 struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
471 struct drm_v3d_perfmon_set_global *req = data;
472 struct v3d_dev *v3d = to_v3d_dev(dev);
473 struct v3d_perfmon *perfmon;
474
475 if (req->flags & ~DRM_V3D_PERFMON_CLEAR_GLOBAL)
476 return -EINVAL;
477
478 perfmon = v3d_perfmon_find(v3d_priv, id: req->id);
479 if (!perfmon)
480 return -EINVAL;
481
482 /* If the request is to clear the global performance monitor */
483 if (req->flags & DRM_V3D_PERFMON_CLEAR_GLOBAL) {
484 if (!v3d->global_perfmon)
485 return -EINVAL;
486
487 xchg(&v3d->global_perfmon, NULL);
488
489 return 0;
490 }
491
492 if (cmpxchg(&v3d->global_perfmon, NULL, perfmon))
493 return -EBUSY;
494
495 return 0;
496}
497

source code of linux/drivers/gpu/drm/v3d/v3d_perfmon.c