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.
Signed-off-by: Tobias Jakobi <tjakobi@xxxxxxxxxxxxxxxxxxxxx>
---
tests/exynos/Makefile.am | 11 +-
tests/exynos/exynos_fimg2d_event.c | 326 +++++++++++++++++++++++++++++++++++++
2 files changed, 335 insertions(+), 2 deletions(-)
create mode 100644 tests/exynos/exynos_fimg2d_event.c
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
--
To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
