[PATCH 3/3] igt/gem_create: Test to validate parameters for GEM_CREATE ioctl

ankitprasad.r.sharma
2015-07-22T14:02:49Z

This test validates the two parameters (size and flags) GEM_CREATE ioctl.

v2: Added IGT_TEST_DESCRIPTION (Thomas Wood)

v3: Removed use of hard coded values, updated comments (Tvrtko)

Signed-off-by: Ankitprasad Sharma <ankitprasad.r.sharma at intel.com>
---
tests/Makefile.sources | 1 +
tests/gem_create.c | 170 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 171 insertions(+)
create mode 100644 tests/gem_create.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 324cbb5..f5790df 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -15,6 +15,7 @@ TESTS_progs_M = \
gem_close_race \
gem_concurrent_blit \
gem_concurrent_all \
+ gem_create \
gem_cs_tlb \
gem_ctx_param_basic \
gem_ctx_bad_exec \
diff --git a/tests/gem_create.c b/tests/gem_create.c
new file mode 100644
index 0000000..d2c1189
--- /dev/null
+++ b/tests/gem_create.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright © 2015 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:
+ * Ankitprasad Sharma <ankitprasad.r.sharma at intel.com>
+ *
+ */
+
+/** @file gem_create.c
+ *
+ * This is a test for the extended and old gem_create ioctl, that
+ * includes allocation of object from stolen memory and shmem.
+ *
+ * The goal is to simply ensure that basics work and invalid input
+ * combinations are rejected.
+ */
+
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <stdio.h>
+#include <string.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <getopt.h>
+
+#include <drm.h>
+
+#include "ioctl_wrappers.h"
+#include "intel_bufmgr.h"
+#include "intel_batchbuffer.h"
+#include "intel_io.h"
+#include "intel_chipset.h"
+#include "igt_aux.h"
+#include "drmtest.h"
+#include "drm.h"
+#include "i915_drm.h"
+
+IGT_TEST_DESCRIPTION("This is a test for the extended & old gem_create ioctl,"
+ " that includes allocation of object from stolen memory"
+ " and shmem");
+
+#define CLEAR(s) memset(&s, 0, sizeof(s))
+#define UNALIGNED_SIZE (PAGE_SIZE - (2*1024))
+#define VALID_OFFSET (PAGE_SIZE - 1024)
+#define INVALID_OFFSET (PAGE_SIZE + 1024)
+#define LENGTH 256
+#define DWORD_SIZE 4
+
+struct local_i915_gem_create_v2 {
+ uint64_t size;
+ uint32_t handle;
+ uint32_t pad;
+#define I915_CREATE_PLACEMENT_STOLEN (1<<0)
+ uint32_t flags;
+} create;
+
+#define LOCAL_IOCTL_I915_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_CREATE, struct local_i915_gem_create_v2)
+
+static void invalid_flag_test(int fd)
+{
+ int ret;
+
+ gem_require_stolen_support(fd);
+
+ create.handle = 0;
+ create.size = PAGE_SIZE;
+ create.flags = ~I915_CREATE_PLACEMENT_STOLEN;
+ ret = drmIoctl(fd, LOCAL_IOCTL_I915_GEM_CREATE, &create);
+
+ igt_assert(ret <= 0);
+
+ create.flags = ~0;
+ ret = drmIoctl(fd, LOCAL_IOCTL_I915_GEM_CREATE, &create);
+
+ igt_assert(ret <= 0);
+}
+
+static void invalid_size_test(int fd)
+{
+ int handle;
+
+ handle = __gem_create(fd, 0);
+ igt_assert(handle == 0);
+}
+
+/*
+ * Creating an object with non-aligned size and trying to access it with an
+ * offset, which is greater than the requested size but smaller than the
+ * object's last page boundary. pwrite here must be successful.
+ */
+static void valid_nonaligned_size(int fd)
+{
+ int handle, i;
+ uint32_t buf[PAGE_SIZE/DWORD_SIZE];
+
+ handle = gem_create(fd, UNALIGNED_SIZE);
+ igt_assert(handle != 0);
+
+ gem_write(fd, handle, VALID_OFFSET, buf, LENGTH);
+
+ gem_close(fd, handle);
+}
+
+/*
+ * Creating an object with non-aligned size and trying to access it with an
+ * offset, which is greater than the requested size and larger than the
+ * object's last page boundary. pwrite here must fail.
+ */
+static void invalid_nonaligned_size(int fd)
+{
+ int handle, i;
+ uint32_t buf[PAGE_SIZE/DWORD_SIZE];
+ struct drm_i915_gem_pwrite gem_pwrite;
+
+ handle = gem_create(fd, UNALIGNED_SIZE);
+
+ CLEAR(gem_pwrite);
+ gem_pwrite.handle = handle;
+ gem_pwrite.offset = INVALID_OFFSET;
+ gem_pwrite.size = LENGTH;
+ gem_pwrite.data_ptr = (uintptr_t)buf;
+ igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &gem_pwrite) != 0);
+
+ gem_close(fd, handle);
+}
+
+igt_main
+{
+ int fd = -1;
+
+ igt_skip_on_simulation();
+
+ igt_fixture {
+ fd = drm_open_any();
+ }
+
+ igt_subtest("stolen-invalid-flag")
+ invalid_flag_test(fd);
+
+ igt_subtest("stolen-invalid-size")
+ invalid_size_test(fd);
+
+ igt_subtest("stolen-valid-nonaligned")
+ valid_nonaligned_size(fd);
+
+ igt_subtest("stolen-invalid-nonaligned")
+ invalid_nonaligned_size(fd);
+}