tests: Add gem_close_race

The intention is to exercise #70784. Yet the first challenge is make the
test suite happy.

diff --git a/tests/.gitignore b/tests/.gitignore
index eded4a7..4a04c0d 100644 (file)
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -12,6 +12,7 @@ gem_bad_blit
 gem_bad_length
 gem_basic
 gem_caching
+gem_close_race
 gem_concurrent_blit
 gem_cpu_reloc
 gem_cs_prefetch

diff --git a/tests/Makefile.am b/tests/Makefile.am
index 99d7b7a..e9e37a6 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -68,6 +68,7 @@ TESTS_progs = \
        drm_vma_limiter_cpu \
        drm_vma_limiter_gtt \
        gem_bad_length \
+       gem_close_race \
        gem_cpu_reloc \
        gem_cs_prefetch \
        gem_ctx_bad_destroy \

diff --git a/tests/gem_close_race.c b/tests/gem_close_race.c
new file mode 100644 (file)
index 0000000..cceae36
--- /dev/null
+++ b/tests/gem_close_race.c
@@ -0,0 +1,148 @@
+/*
+ * Copyright © 2013 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Chris Wilson <chris@chris-wilson.co.uk>
+ *
+ */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include "drm.h"
+#include "i915_drm.h"
+#include "drmtest.h"
+
+#define OBJECT_SIZE 1024*1024*4
+
+#define COPY_BLT_CMD           (2<<29|0x53<<22|0x6)
+#define BLT_WRITE_ALPHA                (1<<21)
+#define BLT_WRITE_RGB          (1<<20)
+
+static void selfcopy(int fd, uint32_t handle)
+{
+       struct drm_i915_gem_relocation_entry reloc[2];
+       struct drm_i915_gem_exec_object2 gem_exec[2];
+       struct drm_i915_gem_execbuffer2 execbuf;
+       uint32_t buf[10];
+       uint32_t batch;
+
+       memset(reloc, 0, sizeof(reloc));
+       memset(gem_exec, 0, sizeof(gem_exec));
+       memset(&execbuf, 0, sizeof(execbuf));
+
+       buf[0] = COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB;
+       buf[1] = 0xcc << 16 | 1 << 25 | 1 << 24 | (4*1024);
+       buf[2] = 0;
+       buf[3] = 1024 << 16 | 1024;
+       buf[4] = 0;
+       reloc[0].offset = 4 * sizeof(uint32_t);
+       reloc[0].delta = 0;
+       reloc[0].target_handle = handle;
+       reloc[0].read_domains = I915_GEM_DOMAIN_RENDER;
+       reloc[0].write_domain = I915_GEM_DOMAIN_RENDER;
+       reloc[0].presumed_offset = 0;
+
+       buf[5] = 0;
+       buf[6] = 4*1024;
+       buf[7] = 0;
+       reloc[1].offset = 7 * sizeof(uint32_t);
+       reloc[1].delta = 0;
+       reloc[1].target_handle = handle;
+       reloc[1].read_domains = I915_GEM_DOMAIN_RENDER;
+       reloc[1].write_domain = 0;
+       reloc[1].presumed_offset = 0;
+
+       buf[8] = MI_BATCH_BUFFER_END;
+       buf[9] = 0;
+
+       gem_exec[0].handle = handle;
+
+       batch = gem_create(fd, 4096);
+
+       gem_write(fd, batch, 0, buf, sizeof(buf));
+       gem_exec[1].handle = batch;
+       gem_exec[1].relocation_count = 2;
+       gem_exec[1].relocs_ptr = (uintptr_t)reloc;
+
+       execbuf.buffers_ptr = (uintptr_t)&gem_exec;
+       execbuf.buffer_count = 2;
+       execbuf.batch_len = sizeof(buf);
+       if (HAS_BLT_RING(intel_get_drm_devid(fd)))
+               execbuf.flags |= I915_EXEC_BLT;
+
+       gem_execbuf(fd, &execbuf);
+}
+
+static int open_drm(void)
+{
+       char name[80];
+
+       sprintf(name, "/dev/dri/card%d", drm_get_card());
+       return open(name, O_RDWR);
+}
+
+static uint32_t load(int fd)
+{
+       uint32_t handle;
+
+       handle = gem_create(fd, OBJECT_SIZE);
+       if (handle == 0)
+               return 0;
+
+       selfcopy(fd, handle);
+       return handle;
+}
+
+static void run(int child)
+{
+       int fd;
+       uint32_t handle;
+
+       fd = open_drm();
+       igt_assert(fd != -1);
+
+       handle = load(fd);
+       if (child & 1)
+               gem_read(fd, handle, 0, &handle, sizeof(handle));
+}
+
+int main(int argc, char *argv[])
+{
+       igt_skip_on_simulation();
+       igt_subtest_init(argc, argv);
+
+       igt_subtest("gem-close-race")
+               igt_fork(child, 100)
+                       run(child);
+
+       igt_waitchildren();
+       igt_exit();
+}