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@math.uni-bielefeld.de --- 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; +}