// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Raspberry Pi
*/
#include "v3d_drv.h"
#include "v3d_regs.h"
#define V3D_PERFMONID_MIN 1
#define V3D_PERFMONID_MAX U32_MAX
static const struct v3d_perf_counter_desc v3d_v42_performance_counters[] = {
{"FEP", "FEP-valid-primitives-no-rendered-pixels", "[FEP] Valid primitives that result in no rendered pixels, for all rendered tiles"},
{"FEP", "FEP-valid-primitives-rendered-pixels", "[FEP] Valid primitives for all rendered tiles (primitives may be counted in more than one tile)"},
{"FEP", "FEP-clipped-quads", "[FEP] Early-Z/Near/Far clipped quads"},
{"FEP", "FEP-valid-quads", "[FEP] Valid quads"},
{"TLB", "TLB-quads-not-passing-stencil-test", "[TLB] Quads with no pixels passing the stencil test"},
{"TLB", "TLB-quads-not-passing-z-and-stencil-test", "[TLB] Quads with no pixels passing the Z and stencil tests"},
{"TLB", "TLB-quads-passing-z-and-stencil-test", "[TLB] Quads with any pixels passing the Z and stencil tests"},
{"TLB", "TLB-quads-with-zero-coverage", "[TLB] Quads with all pixels having zero coverage"},
{"TLB", "TLB-quads-with-non-zero-coverage", "[TLB] Quads with any pixels having non-zero coverage"},
{"TLB", "TLB-quads-written-to-color-buffer", "[TLB] Quads with valid pixels written to colour buffer"},
{"PTB", "PTB-primitives-discarded-outside-viewport", "[PTB] Primitives discarded by being outside the viewport"},
{"PTB", "PTB-primitives-need-clipping", "[PTB] Primitives that need clipping"},
{"PTB", "PTB-primitives-discarded-reversed", "[PTB] Primitives that are discarded because they are reversed"},
{"QPU", "QPU-total-idle-clk-cycles", "[QPU] Total idle clock cycles for all QPUs"},
{"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)"},
{"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)"},
{"QPU", "QPU-total-clk-cycles-executing-valid-instr", "[QPU] Total clock cycles for all QPUs executing valid instructions"},
{"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)"},
{"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)"},
{"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)"},
{"QPU", "QPU-total-instr-cache-hit", "[QPU] Total instruction cache hits for all slices"},
{"QPU", "QPU-total-instr-cache-miss", "[QPU] Total instruction cache misses for all slices"},
{"QPU", "QPU-total-uniform-cache-hit", "[QPU] Total uniforms cache hits for all slices"},
{"QPU", "QPU-total-uniform-cache-miss", "[QPU] Total uniforms cache misses for all slices"},
{"TMU", "TMU-total-text-quads-access", "[TMU] Total texture cache accesses"},
{"TMU", "TMU-total-text-cache-miss", "[TMU] Total texture cache misses (number of fetches from memory/L2cache)"},
{"VPM", "VPM-total-clk-cycles-VDW-stalled", "[VPM] Total clock cycles VDW is stalled waiting for VPM access"},
{"VPM", "VPM-total-clk-cycles-VCD-stalled", "[VPM] Total clock cycles VCD is stalled waiting for VPM access"},
{"CLE", "CLE-bin-thread-active-cycles", "[CLE] Bin thread active cycles"},
{"CLE", "CLE-render-thread-active-cycles", "[CLE] Render thread active cycles"},
{"L2T", "L2T-total-cache-hit", "[L2T] Total Level 2 cache hits"},
{"L2T", "L2T-total-cache-miss", "[L2T] Total Level 2 cache misses"},
{"CORE", "cycle-count", "[CORE] Cycle counter"},
{"QPU", "QPU-total-clk-cycles-waiting-vertex-coord-shading", "[QPU] Total stalled clock cycles for all QPUs doing vertex/coordinate/user shading"},
{"QPU", "QPU-total-clk-cycles-waiting-fragment-shading", "[QPU] Total stalled clock cycles for all QPUs doing fragment shading"},
{"PTB", "PTB-primitives-binned", "[PTB] Total primitives binned"},
{"AXI", "AXI-writes-seen-watch-0", "[AXI] Writes seen by watch 0"},
{"AXI", "AXI-reads-seen-watch-0", "[AXI] Reads seen by watch 0"},
{"AXI", "AXI-writes-stalled-seen-watch-0", "[AXI] Write stalls seen by watch 0"},
{"AXI", "AXI-reads-stalled-seen-watch-0", "[AXI] Read stalls seen by watch 0"},
{"AXI", "AXI-write-bytes-seen-watch-0", "[AXI] Total bytes written seen by watch 0"},
{"AXI", "AXI-read-bytes-seen-watch-0", "[AXI] Total bytes read seen by watch 0"},
{"AXI", "AXI-writes-seen-watch-1", "[AXI] Writes seen by watch 1"},
{"AXI", "AXI-reads-seen-watch-1", "[AXI] Reads seen by watch 1"},
{"AXI", "AXI-writes-stalled-seen-watch-1", "[AXI] Write stalls seen by watch 1"},
{"AXI", "AXI-reads-stalled-seen-watch-1", "[AXI] Read stalls seen by watch 1"},
{"AXI", "AXI-write-bytes-seen-watch-1", "[AXI] Total bytes written seen by watch 1"},
{"AXI", "AXI-read-bytes-seen-watch-1", "[AXI] Total bytes read seen by watch 1"},
{"TLB", "TLB-partial-quads-written-to-color-buffer", "[TLB] Partial quads written to the colour buffer"},
{"TMU", "TMU-total-config-access", "[TMU] Total config accesses"},
{"L2T", "L2T-no-id-stalled", "[L2T] No ID stall"},
{"L2T", "L2T-command-queue-stalled", "[L2T] Command queue full stall"},
{"L2T", "L2T-TMU-writes", "[L2T] TMU write accesses"},
{"TMU", "TMU-active-cycles", "[TMU] Active cycles"},
{"TMU", "TMU-stalled-cycles", "[TMU] Stalled cycles"},
{"CLE", "CLE-thread-active-cycles", "[CLE] Bin or render thread active cycles"},
{"L2T", "L2T-TMU-reads", "[L2T] TMU read accesses"},
{"L2T", "L2T-CLE-reads", "[L2T] CLE read accesses"},
{"L2T", "L2T-VCD-reads", "[L2T] VCD read accesses"},
{"L2T", "L2T-TMU-config-reads", "[L2T] TMU CFG read accesses"},
{"L2T", "L2T-SLC0-reads", "[L2T] SLC0 read accesses"},
{"L2T", "L2T-SLC1-reads", "[L2T] SLC1 read accesses"},
{"L2T", "L2T-SLC2-reads", "[L2T] SLC2 read accesses"},
{"L2T", "L2T-TMU-write-miss", "[L2T] TMU write misses"},
{"L2T", "L2T-TMU-read-miss", "[L2T] TMU read misses"},
{"L2T", "L2T-CLE-read-miss", "[L2T] CLE read misses"},
{"L2T", "L2T-VCD-read-miss", "[L2T] VCD read misses"},
{"L2T", "L2T-TMU-config-read-miss", "[L2T] TMU CFG read misses"},
{"L2T", "L2T-SLC0-read-miss", "[L2T] SLC0 read misses"},
{"L2T", "L2T-SLC1-read-miss", "[L2T] SLC1 read misses"},
{"L2T", "L2T-SLC2-read-miss", "[L2T] SLC2 read misses"},
{"CORE", "core-memory-writes", "[CORE] Total memory writes"},
{"L2T", "L2T-memory-writes", "[L2T] Total memory writes"},
{"PTB", "PTB-memory-writes", "[PTB] Total memory writes"},
{"TLB", "TLB-memory-writes", "[TLB] Total memory writes"},
{"CORE", "core-memory-reads", "[CORE] Total memory reads"},
{"L2T", "L2T-memory-reads", "[L2T] Total memory reads"},
{"PTB", "PTB-memory-reads", "[PTB] Total memory reads"},
{"PSE", "PSE-memory-reads", "[PSE] Total memory reads"},
{"TLB", "TLB-memory-reads", "[TLB] Total memory reads"},
{"GMP", "GMP-memory-reads", "[GMP] Total memory reads"},
{"PTB", "PTB-memory-words-writes", "[PTB] Total memory words written"},
{"TLB", "TLB-memory-words-writes", "[TLB] Total memory words written"},
{"PSE", "PSE-memory-words-reads", "[PSE] Total memory words read"},
{"TLB", "TLB-memory-words-reads", "[TLB] Total memory words read"},
{"TMU", "TMU-MRU-hits", "[TMU] Total MRU hits"},
{"CORE", "compute-active-cycles", "[CORE] Compute active cycles"},
};
static const struct v3d_perf_counter_desc v3d_v71_performance_counters[] = {
{"CORE", "cycle-count", "[CORE] Cycle counter"},
{"CORE", "core-active", "[CORE] Bin/Render/Compute active cycles"},
{"CLE", "CLE-bin-thread-active-cycles", "[CLE] Bin thread active cycles"},
{"CLE", "CLE-render-thread-active-cycles", "[CLE] Render thread active cycles"},
{"CORE", "compute-active-cycles", "[CORE] Compute active cycles"},
{"FEP", "FEP-valid-primitives-no-rendered-pixels", "[FEP] Valid primitives that result in no rendered pixels, for all rendered tiles"},
{"FEP", "FEP-valid-primitives-rendered-pixels", "[FEP] Valid primitives for all rendered tiles (primitives may be counted in more than one tile)"},
{"FEP", "FEP-clipped-quads", "[FEP] Early-Z/Near/Far clipped quads"},
{"FEP", "FEP-valid-quads", "[FEP] Valid quads"},
{"TLB", "TLB-quads-not-passing-stencil-test", "[TLB] Quads with no pixels passing the stencil test"},
{"TLB", "TLB-quads-not-passing-z-and-stencil-test", "[TLB] Quads with no pixels passing the Z and stencil tests"},
{"TLB", "TLB-quads-passing-z-and-stencil-test", "[TLB] Quads with any pixels passing the Z and stencil tests"},
{"TLB", "TLB-quads-written-to-color-buffer", "[TLB] Quads with valid pixels written to colour buffer"},
{"TLB", "TLB-partial-quads-written-to-color-buffer", "[TLB] Partial quads written to the colour buffer"},
{"PTB", "PTB-primitives-need-clipping", "[PTB] Primitives that need clipping"},
{"PTB", "PTB-primitives-discarded-outside-viewport", "[PTB] Primitives discarded by being outside the viewport"},
{"PTB", "PTB-primitives-binned", "[PTB] Total primitives binned"},
{"PTB", "PTB-primitives-discarded-reversed", "[PTB] Primitives that are discarded because they are reversed"},
{"QPU", "QPU-total-instr-cache-hit", "[QPU] Total instruction cache hits for all slices"},
{"QPU", "QPU-total-instr-cache-miss", "[QPU] Total instruction cache misses for all slices"},
{"QPU", "QPU-total-uniform-cache-hit", "[QPU] Total uniforms cache hits for all slices"},
{"QPU", "QPU-total-uniform-cache-miss", "[QPU] Total uniforms cache misses for all slices"},
{"TMU", "TMU-active-cycles", "[TMU] Active cycles"},
{"TMU", "TMU-stalled-cycles", "[TMU] Stalled cycles"},
{"TMU", "TMU-total-text-quads-access", "[TMU] Total texture cache accesses"},
{"TMU", "TMU-cache-x4-active-cycles", "[TMU] Cache active cycles for x4 access"},
{"TMU", "TMU-cache-x4-stalled-cycles", "[TMU] Cache stalled cycles for x4 access"},
{"TMU", "TMU-total-text-quads-x4-access", "[TMU] Total texture cache x4 access"},
{"L2T", "L2T-total-cache-hit", "[L2T] Total Level 2 cache hits"},
{"L2T", "L2T-total-cache-miss", "[L2T] Total Level 2 cache misses"},
{"L2T", "L2T-local", "[L2T] Local mode access"},
{"L2T", "L2T-writeback", "[L2T] Writeback"},
{"L2T", "L2T-zero", "[L2T] Zero"},
{"L2T", "L2T-merge", "[L2T] Merge"},
{"L2T", "L2T-fill", "[L2T] Fill"},
{"L2T", "L2T-stalls-no-wid", "[L2T] Stalls because no WID available"},
{"L2T", "L2T-stalls-no-rid", "[L2T] Stalls because no RID available"},
{"L2T", "L2T-stalls-queue-full", "[L2T] Stalls because internal queue full"},
{"L2T", "L2T-stalls-wrightback", "[L2T] Stalls because writeback in flight"},
{"L2T", "L2T-stalls-mem", "[L2T] Stalls because AXI blocks read"},
{"L2T", "L2T-stalls-fill", "[L2T] Stalls because fill pending for victim cache-line"},
{"L2T", "L2T-hitq", "[L2T] Sent request via hit queue"},
{"L2T", "L2T-hitq-full", "[L2T] Sent request via main queue because hit queue is full"},
{"L2T", "L2T-stalls-read-data", "[L2T] Stalls because waiting for data from SDRAM"},
{"L2T", "L2T-TMU-read-hits", "[L2T] TMU read hits"},
{"L2T", "L2T-TMU-read-miss", "[L2T] TMU read misses"},
{"L2T", "L2T-VCD-read-hits", "[L2T] VCD read hits"},
{"L2T", "L2T-VCD-read-miss", "[L2T] VCD read misses"},
{"L2T", "L2T-SLC-read-hits", "[L2T] SLC read hits (all slices)"},
{"L2T", "L2T-SLC-read-miss", "[L2T] SLC read misses (all slices)"},
{"AXI", "AXI-writes-seen-watch-0", "[AXI] Writes seen by watch 0"},
{"AXI", "AXI-reads-seen-watch-0", "[AXI] Reads seen by watch 0"},
{"AXI", "AXI-writes-stalled-seen-watch-0", "[AXI] Write stalls seen by watch 0"},
{"AXI", "AXI-reads-stalled-seen-watch-0", "[AXI] Read stalls seen by watch 0"},
{"AXI", "AXI-write-bytes-seen-watch-0", "[AXI] Total bytes written seen by watch 0"},
{"AXI", "AXI-read-bytes-seen-watch-0", "[AXI] Total bytes read seen by watch 0"},
{"AXI", "AXI-writes-seen-watch-1", "[AXI] Writes seen by watch 1"},
{"AXI", "AXI-reads-seen-watch-1", "[AXI] Reads seen by watch 1"},
{"AXI", "AXI-writes-stalled-seen-watch-1", "[AXI] Write stalls seen by watch 1"},
{"AXI", "AXI-reads-stalled-seen-watch-1", "[AXI] Read stalls seen by watch 1"},
{"AXI", "AXI-write-bytes-seen-watch-1", "[AXI] Total bytes written seen by watch 1"},
{"AXI", "AXI-read-bytes-seen-watch-1", "[AXI] Total bytes read seen by watch 1"},
{"CORE", "core-memory-writes", "[CORE] Total memory writes"},
{"L2T", "L2T-memory-writes", "[L2T] Total memory writes"},
{"PTB", "PTB-memory-writes", "[PTB] Total memory writes"},
{"TLB", "TLB-memory-writes", "[TLB] Total memory writes"},
{"CORE", "core-memory-reads", "[CORE] Total memory reads"},
{"L2T", "L2T-memory-reads", "[L2T] Total memory reads"},
{"PTB", "PTB-memory-reads", "[PTB] Total memory reads"},
{"PSE", "PSE-memory-reads", "[PSE] Total memory reads"},
{"TLB", "TLB-memory-reads", "[TLB] Total memory reads"},
{"PTB", "PTB-memory-words-writes", "[PTB] Total memory words written"},
{"TLB", "TLB-memory-words-writes", "[TLB] Total memory words written"},
{"PSE", "PSE-memory-words-reads", "[PSE] Total memory words read"},
{"TLB", "TLB-memory-words-reads", "[TLB] Total memory words read"},
{"AXI", "AXI-read-trans", "[AXI] Read transaction count"},
{"AXI", "AXI-write-trans", "[AXI] Write transaction count"},
{"AXI", "AXI-read-wait-cycles", "[AXI] Read total wait cycles"},
{"AXI", "AXI-write-wait-cycles", "[AXI] Write total wait cycles"},
{"AXI", "AXI-max-outstanding-reads", "[AXI] Maximum outstanding read transactions"},
{"AXI", "AXI-max-outstanding-writes", "[AXI] Maximum outstanding write transactions"},
{"QPU", "QPU-wait-bubble", "[QPU] Pipeline bubble in qcycles due all threads waiting"},
{"QPU", "QPU-ic-miss-bubble", "[QPU] Pipeline bubble in qcycles due instruction-cache miss"},
{"QPU", "QPU-active", "[QPU] Executed shader instruction"},
{"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)"},
{"QPU", "QPU-stalls", "[QPU] Stalled qcycles executing shader instruction"},
{"QPU", "QPU-total-clk-cycles-waiting-fragment-shading", "[QPU] Total stalled clock cycles for all QPUs doing fragment shading"},
{"QPU", "QPU-stalls-TMU", "[QPU] Stalled qcycles waiting for TMU"},
{"QPU", "QPU-stalls-TLB", "[QPU] Stalled qcycles waiting for TLB"},
{"QPU", "QPU-stalls-VPM", "[QPU] Stalled qcycles waiting for VPM"},
{"QPU", "QPU-stalls-uniforms", "[QPU] Stalled qcycles waiting for uniforms"},
{"QPU", "QPU-stalls-SFU", "[QPU] Stalled qcycles waiting for SFU"},
{"QPU", "QPU-stalls-other", "[QPU] Stalled qcycles waiting for any other reason (vary/W/Z)"},
};
void v3d_perfmon_init(struct v3d_dev *v3d)
{
const struct v3d_perf_counter_desc *counters = NULL;
unsigned int max = 0;
if (v3d->ver >= 71) {
counters = v3d_v71_performance_counters;
max = ARRAY_SIZE(v3d_v71_performance_counters);
} else if (v3d->ver >= 42) {
counters = v3d_v42_performance_counters;
max = ARRAY_SIZE(v3d_v42_performance_counters);
}
v3d->perfmon_info.max_counters = max;
v3d->perfmon_info.counters = counters;
}
void v3d_perfmon_get(struct v3d_perfmon *perfmon)
{
if (perfmon)
refcount_inc(&perfmon->refcnt);
}
void v3d_perfmon_put(struct v3d_perfmon *perfmon)
{
if (perfmon && refcount_dec_and_test(&perfmon->refcnt)) {
mutex_destroy(&perfmon->lock);
kfree(perfmon);
}
}
void v3d_perfmon_start(struct v3d_dev *v3d, struct v3d_perfmon *perfmon)
{
unsigned int i;
u32 mask;
u8 ncounters;
if (WARN_ON_ONCE(!perfmon || v3d->active_perfmon))
return;
ncounters = perfmon->ncounters;
mask = GENMASK(ncounters - 1, 0);
for (i = 0; i < ncounters; i++) {
u32 source = i / 4;
u32 channel = V3D_SET_FIELD(perfmon->counters[i], V3D_PCTR_S0);
i++;
channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
V3D_PCTR_S1);
i++;
channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
V3D_PCTR_S2);
i++;
channel |= V3D_SET_FIELD(i < ncounters ? perfmon->counters[i] : 0,
V3D_PCTR_S3);
V3D_CORE_WRITE(0, V3D_V4_PCTR_0_SRC_X(source), channel);
}
V3D_CORE_WRITE(0, V3D_V4_PCTR_0_CLR, mask);
V3D_CORE_WRITE(0, V3D_PCTR_0_OVERFLOW, mask);
V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, mask);
v3d->active_perfmon = perfmon;
}
void v3d_perfmon_stop(struct v3d_dev *v3d, struct v3d_perfmon *perfmon,
bool capture)
{
unsigned int i;
if (!perfmon || !v3d->active_perfmon)
return;
mutex_lock(&perfmon->lock);
if (perfmon != v3d->active_perfmon) {
mutex_unlock(&perfmon->lock);
return;
}
if (capture)
for (i = 0; i < perfmon->ncounters; i++)
perfmon->values[i] += V3D_CORE_READ(0, V3D_PCTR_0_PCTRX(i));
V3D_CORE_WRITE(0, V3D_V4_PCTR_0_EN, 0);
v3d->active_perfmon = NULL;
mutex_unlock(&perfmon->lock);
}
struct v3d_perfmon *v3d_perfmon_find(struct v3d_file_priv *v3d_priv, int id)
{
struct v3d_perfmon *perfmon;
mutex_lock(&v3d_priv->perfmon.lock);
perfmon = idr_find(&v3d_priv->perfmon.idr, id);
v3d_perfmon_get(perfmon);
mutex_unlock(&v3d_priv->perfmon.lock);
return perfmon;
}
void v3d_perfmon_open_file(struct v3d_file_priv *v3d_priv)
{
mutex_init(&v3d_priv->perfmon.lock);
idr_init_base(&v3d_priv->perfmon.idr, 1);
}
static int v3d_perfmon_idr_del(int id, void *elem, void *data)
{
struct v3d_perfmon *perfmon = elem;
v3d_perfmon_put(perfmon);
return 0;
}
void v3d_perfmon_close_file(struct v3d_file_priv *v3d_priv)
{
mutex_lock(&v3d_priv->perfmon.lock);
idr_for_each(&v3d_priv->perfmon.idr, v3d_perfmon_idr_del, NULL);
idr_destroy(&v3d_priv->perfmon.idr);
mutex_unlock(&v3d_priv->perfmon.lock);
mutex_destroy(&v3d_priv->perfmon.lock);
}
int v3d_perfmon_create_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct drm_v3d_perfmon_create *req = data;
struct v3d_dev *v3d = v3d_priv->v3d;
struct v3d_perfmon *perfmon;
unsigned int i;
int ret;
/* Number of monitored counters cannot exceed HW limits. */
if (req->ncounters > DRM_V3D_MAX_PERF_COUNTERS ||
!req->ncounters)
return -EINVAL;
/* Make sure all counters are valid. */
for (i = 0; i < req->ncounters; i++) {
if (req->counters[i] >= v3d->perfmon_info.max_counters)
return -EINVAL;
}
perfmon = kzalloc(struct_size(perfmon, values, req->ncounters),
GFP_KERNEL);
if (!perfmon)
return -ENOMEM;
for (i = 0; i < req->ncounters; i++)
perfmon->counters[i] = req->counters[i];
perfmon->ncounters = req->ncounters;
refcount_set(&perfmon->refcnt, 1);
mutex_init(&perfmon->lock);
mutex_lock(&v3d_priv->perfmon.lock);
ret = idr_alloc(&v3d_priv->perfmon.idr, perfmon, V3D_PERFMONID_MIN,
V3D_PERFMONID_MAX, GFP_KERNEL);
mutex_unlock(&v3d_priv->perfmon.lock);
if (ret < 0) {
mutex_destroy(&perfmon->lock);
kfree(perfmon);
return ret;
}
req->id = ret;
return 0;
}
int v3d_perfmon_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct drm_v3d_perfmon_destroy *req = data;
struct v3d_perfmon *perfmon;
mutex_lock(&v3d_priv->perfmon.lock);
perfmon = idr_remove(&v3d_priv->perfmon.idr, req->id);
mutex_unlock(&v3d_priv->perfmon.lock);
if (!perfmon)
return -EINVAL;
v3d_perfmon_put(perfmon);
return 0;
}
int v3d_perfmon_get_values_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct v3d_dev *v3d = to_v3d_dev(dev);
struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
struct drm_v3d_perfmon_get_values *req = data;
struct v3d_perfmon *perfmon;
int ret = 0;
if (req->pad != 0)
return -EINVAL;
mutex_lock(&v3d_priv->perfmon.lock);
perfmon = idr_find(&v3d_priv->perfmon.idr, req->id);
v3d_perfmon_get(perfmon);
mutex_unlock(&v3d_priv->perfmon.lock);
if (!perfmon)
return -EINVAL;
v3d_perfmon_stop(v3d, perfmon, true);
if (copy_to_user(u64_to_user_ptr(req->values_ptr), perfmon->values,
perfmon->ncounters * sizeof(u64)))
ret = -EFAULT;
v3d_perfmon_put(perfmon);
return ret;
}
int v3d_perfmon_get_counter_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_v3d_perfmon_get_counter *req = data;
struct v3d_dev *v3d = to_v3d_dev(dev);
const struct v3d_perf_counter_desc *counter;
for (int i = 0; i < ARRAY_SIZE(req->reserved); i++) {
if (req->reserved[i] != 0)
return -EINVAL;
}
if (!v3d->perfmon_info.max_counters)
return -EOPNOTSUPP;
/* Make sure that the counter ID is valid */
if (req->counter >= v3d->perfmon_info.max_counters)
return -EINVAL;
counter = &v3d->perfmon_info.counters[req->counter];
strscpy(req->name, counter->name, sizeof(req->name));
strscpy(req->category, counter->category, sizeof(req->category));
strscpy(req->description, counter->description, sizeof(req->description));
return 0;
}
Codebase Browser
linux