[PATCH v2 06/13] tests/exynos: add fimg2d event test

From: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
To: linux-samsung-soc@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org, emil.l.velikov@gmail.com,
	jy0922.shim@samsung.com, inki.dae@samsung.com,
	human.hwang@samsung.com,
	Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Subject: [PATCH v2 06/13] tests/exynos: add fimg2d event test
Date: Sun, 22 Nov 2015 19:48:36 +0100	[thread overview]
Message-ID: <1448218123-21292-7-git-send-email-tjakobi@math.uni-bielefeld.de> (raw)
In-Reply-To: <1448218123-21292-1-git-send-email-tjakobi@math.uni-bielefeld.de>

This tests async processing of G2D jobs. A separate thread is spawned
to monitor the DRM fd for events and check whether a G2D job was
completed.

v2: Add GPLv2 header, argument handling and documentation.
    Test is only installed when requested.
v3: Allocate G2D jobs with calloc which fixes 'busy' being
    potentially uninitialized. Also enable timeout for poll()
    in the monitor thread. This fixes pthread_join() not working
    because of poll() not returning.
v4: Use explicit/fixed values for the DRM event context versions.
v5: Add binary to .gitignore.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
---
 .gitignore                         |   1 +
 tests/exynos/Makefile.am           |  11 +-
 tests/exynos/exynos_fimg2d_event.c | 326 +++++++++++++++++++++++++++++++++++++
 3 files changed, 336 insertions(+), 2 deletions(-)
 create mode 100644 tests/exynos/exynos_fimg2d_event.c

diff --git a/.gitignore b/.gitignore
index 204724a..922e339 100644
--- a/.gitignore
+++ b/.gitignore
@@ -94,6 +94,7 @@ tests/proptest/proptest
 tests/kmstest/kmstest
 tests/vbltest/vbltest
 tests/radeon/radeon_ttm
+tests/exynos/exynos_fimg2d_event
 tests/exynos/exynos_fimg2d_perf
 tests/exynos/exynos_fimg2d_test
 man/*.3
diff --git a/tests/exynos/Makefile.am b/tests/exynos/Makefile.am
index e82d199..357d6b8 100644
--- a/tests/exynos/Makefile.am
+++ b/tests/exynos/Makefile.am
@@ -20,16 +20,23 @@ endif
 
 if HAVE_INSTALL_TESTS
 bin_PROGRAMS += \
-	exynos_fimg2d_perf
+	exynos_fimg2d_perf \
+	exynos_fimg2d_event
 else
 noinst_PROGRAMS += \
-	exynos_fimg2d_perf
+	exynos_fimg2d_perf \
+	exynos_fimg2d_event
 endif
 
 exynos_fimg2d_perf_LDADD = \
 	$(top_builddir)/libdrm.la \
 	$(top_builddir)/exynos/libdrm_exynos.la
 
+exynos_fimg2d_event_LDADD = \
+	$(top_builddir)/libdrm.la \
+	$(top_builddir)/exynos/libdrm_exynos.la \
+	-lpthread
+
 exynos_fimg2d_test_LDADD = \
 	$(top_builddir)/libdrm.la \
 	$(top_builddir)/libkms/libkms.la \
diff --git a/tests/exynos/exynos_fimg2d_event.c b/tests/exynos/exynos_fimg2d_event.c
new file mode 100644
index 0000000..3f5c3f4
--- /dev/null
+++ b/tests/exynos/exynos_fimg2d_event.c
@@ -0,0 +1,326 @@
+/*
+ * Copyright (C) 2015 - Tobias Jakobi
+ *
+ * This is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation, either version 2 of the License,
+ * or (at your option) any later version.
+ *
+ * It is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with it. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <unistd.h>
+#include <poll.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+#include <getopt.h>
+
+#include <pthread.h>
+
+#include <xf86drm.h>
+
+#include "exynos_drm.h"
+#include "exynos_drmif.h"
+#include "exynos_fimg2d.h"
+
+struct g2d_job {
+	unsigned int id;
+	unsigned int busy;
+};
+
+struct exynos_evhandler {
+	struct pollfd fds;
+	struct exynos_event_context evctx;
+};
+
+struct threaddata {
+	unsigned int stop;
+	struct exynos_device *dev;
+	struct exynos_evhandler evhandler;
+};
+
+static void g2d_event_handler(int fd, unsigned int cmdlist_no, unsigned int tv_sec,
+							unsigned int tv_usec, void *user_data)
+{
+	struct g2d_job *job = user_data;
+
+	fprintf(stderr, "info: g2d job (id = %u, cmdlist number = %u) finished!\n",
+			job->id, cmdlist_no);
+
+	job->busy = 0;
+}
+
+static void setup_g2d_event_handler(struct exynos_evhandler *evhandler, int fd)
+{
+	evhandler->fds.fd = fd;
+	evhandler->fds.events = POLLIN;
+	evhandler->evctx.base.version = 2;
+	evhandler->evctx.version = 1;
+	evhandler->evctx.g2d_event_handler = g2d_event_handler;
+}
+
+static void* threadfunc(void *arg) {
+	const int timeout = 0;
+	struct threaddata *data;
+
+	data = arg;
+
+	while (1) {
+		if (data->stop) break;
+
+		usleep(500);
+
+		data->evhandler.fds.revents = 0;
+
+		if (poll(&data->evhandler.fds, 1, timeout) < 0)
+			continue;
+
+		if (data->evhandler.fds.revents & (POLLHUP | POLLERR))
+			continue;
+
+		if (data->evhandler.fds.revents & POLLIN)
+			exynos_handle_event(data->dev, &data->evhandler.evctx);
+	}
+
+	pthread_exit(0);
+}
+
+/*
+ * We need to wait until all G2D jobs are finished, otherwise we
+ * potentially remove a BO which the engine still operates on.
+ * This results in the following kernel message:
+ * [drm:exynos_drm_gem_put_dma_addr] *ERROR* failed to lookup gem object.
+ * Also any subsequent BO allocations fail then with:
+ * [drm:exynos_drm_alloc_buf] *ERROR* failed to allocate buffer.
+ */
+static void wait_all_jobs(struct g2d_job* jobs, unsigned num_jobs)
+{
+	unsigned i;
+
+	for (i = 0; i < num_jobs; ++i) {
+		while (jobs[i].busy)
+			usleep(500);
+	}
+
+}
+
+static struct g2d_job* free_job(struct g2d_job* jobs, unsigned num_jobs)
+{
+	unsigned i;
+
+	for (i = 0; i < num_jobs; ++i) {
+		if (jobs[i].busy == 0)
+			return &jobs[i];
+	}
+
+	return NULL;
+}
+
+static int g2d_work(struct g2d_context *ctx, struct g2d_image *img,
+					unsigned num_jobs, unsigned iterations)
+{
+	struct g2d_job *jobs = calloc(num_jobs, sizeof(struct g2d_job));
+	int ret;
+	unsigned i;
+
+	/* setup job ids */
+	for (i = 0; i < num_jobs; ++i)
+		jobs[i].id = i;
+
+	for (i = 0; i < iterations; ++i) {
+		unsigned x, y, w, h;
+
+		struct g2d_job *j = NULL;
+
+		while (1) {
+			j = free_job(jobs, num_jobs);
+
+			if (j)
+				break;
+			else
+				usleep(500);
+		}
+
+		x = rand() % img->width;
+		y = rand() % img->height;
+
+		if (x == (img->width - 1))
+			x -= 1;
+		if (y == (img->height - 1))
+			y -= 1;
+
+		w = rand() % (img->width - x);
+		h = rand() % (img->height - y);
+
+		if (w == 0) w = 1;
+		if (h == 0) h = 1;
+
+		img->color = rand();
+
+		j->busy = 1;
+		g2d_config_event(ctx, j);
+
+		ret = g2d_solid_fill(ctx, img, x, y, w, h);
+
+		if (ret == 0)
+			g2d_exec2(ctx, G2D_EXEC_FLAG_ASYNC);
+
+		if (ret != 0) {
+			fprintf(stderr, "error: iteration %u (x = %u, x = %u, x = %u, x = %u) failed\n",
+					i, x, y, w, h);
+			break;
+		}
+	}
+
+	wait_all_jobs(jobs, num_jobs);
+	free(jobs);
+
+	return 0;
+}
+
+static void usage(const char *name)
+{
+	fprintf(stderr, "usage: %s [-ijwh]\n\n", name);
+
+	fprintf(stderr, "\t-i <number of iterations>\n");
+	fprintf(stderr, "\t-j <number of G2D jobs> (default = 4)\n\n");
+
+	fprintf(stderr, "\t-w <buffer width> (default = 4096)\n");
+	fprintf(stderr, "\t-h <buffer height> (default = 4096)\n");
+
+	exit(0);
+}
+
+int main(int argc, char **argv)
+{
+	int fd, ret, c, parsefail;
+
+	pthread_t event_thread;
+	struct threaddata event_data = {0};
+
+	struct exynos_device *dev;
+	struct g2d_context *ctx;
+	struct exynos_bo *bo;
+
+	struct g2d_image img = {0};
+
+	unsigned int iters = 0, njobs = 4;
+	unsigned int bufw = 4096, bufh = 4096;
+
+	ret = 0;
+	parsefail = 0;
+
+	while ((c = getopt(argc, argv, "i:j:w:h:")) != -1) {
+		switch (c) {
+		case 'i':
+			if (sscanf(optarg, "%u", &iters) != 1)
+				parsefail = 1;
+			break;
+		case 'j':
+			if (sscanf(optarg, "%u", &njobs) != 1)
+				parsefail = 1;
+			break;
+		case 'w':
+			if (sscanf(optarg, "%u", &bufw) != 1)
+				parsefail = 1;
+			break;
+		case 'h':
+			if (sscanf(optarg, "%u", &bufh) != 1)
+				parsefail = 1;
+			break;
+		default:
+			parsefail = 1;
+			break;
+		}
+	}
+
+	if (parsefail || (argc == 1) || (iters == 0))
+		usage(argv[0]);
+
+	if (bufw > 4096 || bufh > 4096) {
+		fprintf(stderr, "error: buffer width/height should be less than 4096.\n");
+		ret = -1;
+
+		goto out;
+	}
+
+	if (bufw == 0 || bufh == 0) {
+		fprintf(stderr, "error: buffer width/height should be non-zero.\n");
+		ret = -1;
+
+		goto out;
+	}
+
+	fd = drmOpen("exynos", NULL);
+	if (fd < 0) {
+		fprintf(stderr, "error: failed to open drm\n");
+		ret = -1;
+
+		goto out;
+	}
+
+	dev = exynos_device_create(fd);
+	if (dev == NULL) {
+		fprintf(stderr, "error: failed to create device\n");
+		ret = -2;
+
+		goto fail;
+	}
+
+	ctx = g2d_init(fd);
+	if (ctx == NULL) {
+		fprintf(stderr, "error: failed to init G2D\n");
+		ret = -3;
+
+		goto g2d_fail;
+	}
+
+	bo = exynos_bo_create(dev, bufw * bufh * 4, 0);
+	if (bo == NULL) {
+		fprintf(stderr, "error: failed to create bo\n");
+		ret = -4;
+
+		goto bo_fail;
+	}
+
+	/* setup g2d image object */
+	img.width = bufw;
+	img.height = bufh;
+	img.stride = bufw * 4;
+	img.color_mode = G2D_COLOR_FMT_ARGB8888 | G2D_ORDER_AXRGB;
+	img.buf_type = G2D_IMGBUF_GEM;
+	img.bo[0] = bo->handle;
+
+	event_data.dev = dev;
+	setup_g2d_event_handler(&event_data.evhandler, fd);
+
+	pthread_create(&event_thread, NULL, threadfunc, &event_data);
+
+	ret = g2d_work(ctx, &img, njobs, iters);
+	if (ret != 0)
+		fprintf(stderr, "error: g2d_work failed\n");
+
+	event_data.stop = 1;
+	pthread_join(event_thread, NULL);
+
+	exynos_bo_destroy(bo);
+
+bo_fail:
+	g2d_fini(ctx);
+
+g2d_fail:
+	exynos_device_destroy(dev);
+
+fail:
+	drmClose(fd);
+
+out:
+	return ret;
+}
-- 
2.4.9
