[igt-dev] [PATCH i-g-t v2 3/4] tests/i915/gem_mmap_offset: Add new API test for gem_mmap_offset

Zbigniew Kempczyński
2019-11-19T16:02:47Z

From: Lukasz Kalamarz <lukasz.kalamarz@intel.com>

This test is a copy/paste of few gem_mmap subtests, due to good
coverage in previous one. We also need to be sure that we cover
all available memory regions.

Signed-off-by: Lukasz Kalamarz <lukasz.kalamarz@intel.com>
Signed-off-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
tests/Makefile.sources | 3 +
tests/i915/gem_mmap_offset.c | 156 +++++++++++++++++++++++++++++++++++
tests/meson.build | 1 +
3 files changed, 160 insertions(+)
create mode 100644 tests/i915/gem_mmap_offset.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 27801c89..9c6c3933 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -320,6 +320,9 @@ gem_mmap_SOURCES = i915/gem_mmap.c
TESTS_progs += gem_mmap_gtt
gem_mmap_gtt_SOURCES = i915/gem_mmap_gtt.c

+TESTS_progs += gem_mmap_offset
+gem_mmap_offset_SOURCES = i915/gem_mmap_offset.c
+
TESTS_progs += gem_mmap_offset_exhaustion
gem_mmap_offset_exhaustion_SOURCES = i915/gem_mmap_offset_exhaustion.c

diff --git a/tests/i915/gem_mmap_offset.c b/tests/i915/gem_mmap_offset.c
new file mode 100644
index 00000000..b2339111
--- /dev/null
+++ b/tests/i915/gem_mmap_offset.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright © 2019 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.
+ */
+
+#include "igt.h"
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include "drm.h"
+
+IGT_TEST_DESCRIPTION("Basic MMAP_OFFSET IOCTL tests for mem regions\n");
+
+static int mmap_offset_ioctl(int fd, struct local_i915_gem_mmap_offset *arg)
+{
+ int err = 0;
+
+ if (igt_ioctl(fd, LOCAL_IOCTL_I915_GEM_MMAP_OFFSET, arg))
+ err = -errno;
+
+ errno = 0;
+ return err;
+}
+
+igt_main
+{
+ uint8_t *addr;
+ uint32_t obj_size, batch_size;
+ uint32_t mem_type, mem_instance;
+ uint32_t region;
+ int fd;
+ const struct intel_memory_region *mr;
+ struct local_i915_query_memory_region_info *query_info;
+
+ igt_fixture {
+ fd = drm_open_driver(DRIVER_INTEL);
+ gem_require_mmap_offset(fd);
+
+ query_info = gem_query_memory_regions(fd);
+ igt_assert(query_info);
+ }
+
+ for (mr = intel_memory_regions; mr->region_name; mr++) {
+ mem_type = mr->memory_type;
+ mem_instance = mr->memory_instance;
+ region = INTEL_MEMORY_REGION_ID(mem_type, mem_instance);
+ batch_size = gem_get_batch_size(fd, region);
+ obj_size = 4 * batch_size;
+
+ igt_subtest_f("bad-object-%s", mr->region_name) {
+ uint32_t real_handle;
+ uint32_t handles[20];
+ int i = 0;
+
+ gem_query_require_region(query_info, region);
+
+ real_handle = gem_create_in_memory_regions(fd, obj_size,
+ region);
+
+ handles[i++] = 0xdeadbeef;
+ for (int bit = 0; bit < 16; bit++)
+ handles[i++] = real_handle | (1 << (bit + 16));
+ handles[i] = real_handle + 1;
+
+ for (; i >= 0; i--) {
+ struct local_i915_gem_mmap_offset arg = {
+ .handle = handles[i],
+ .flags = LOCAL_I915_MMAP_OFFSET_WB,
+ };
+
+ igt_debug("Trying MMAP IOCTL with handle %x\n",
+ handles[i]);
+ igt_assert_eq(mmap_offset_ioctl(fd, &arg),
+ -ENOENT);
+ }
+
+ gem_close(fd, real_handle);
+ }
+
+ igt_subtest_f("basic-%s", mr->region_name) {
+ struct local_i915_gem_mmap_offset arg;
+ uint8_t *expected;
+ uint8_t *buf;
+
+ gem_query_require_region(query_info, region);
+
+ arg.handle = gem_create_in_memory_regions(fd, obj_size,
+ region);
+ arg.flags = LOCAL_I915_MMAP_OFFSET_WB;
+
+ igt_assert_eq(mmap_offset_ioctl(fd, &arg), 0);
+ addr = mmap64(0, obj_size, PROT_READ | PROT_WRITE,
+ MAP_SHARED, fd, arg.offset);
+ igt_assert(addr != MAP_FAILED);
+
+ igt_debug("Testing contents of newly created object.\n");
+ expected = calloc(obj_size, sizeof(*expected));
+ igt_assert_eq(memcmp(addr, expected, obj_size), 0);
+ free(expected);
+
+ igt_debug("Testing coherency of writes and mmap reads.\n");
+ buf = calloc(obj_size, sizeof(*buf));
+ memset(buf + 1024, 0x01, 1024);
+ gem_write(fd, arg.handle, 0, buf, obj_size);
+ igt_assert_eq(memcmp(buf, addr, obj_size), 0);
+
+ igt_debug("Testing that mapping stays after close\n");
+ gem_close(fd, arg.handle);
+ igt_assert_eq(memcmp(buf, addr, obj_size), 0);
+ free(buf);
+
+ igt_debug("Testing unmapping\n");
+ munmap(addr, obj_size);
+ }
+
+ igt_subtest_f("short-mmap-%s", mr->region_name) {
+ uint32_t handle;
+
+ gem_query_require_region(query_info, region);
+
+ handle = gem_create_in_memory_regions(fd, obj_size,
+ region);
+ igt_assert(obj_size > batch_size);
+
+ addr = gem_mmap__cpu(fd, handle, 0, batch_size,
+ PROT_WRITE);
+ memset(addr, 0, batch_size);
+ munmap(addr, batch_size);
+
+ gem_close(fd, handle);
+ }
+ }
+
+ igt_fixture {
+ free(query_info);
+ close(fd);
+ }
+}
diff --git a/tests/meson.build b/tests/meson.build
index 755fc9e6..644b5504 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -174,6 +174,7 @@ i915_progs = [
'gem_media_vme',
'gem_mmap',
'gem_mmap_gtt',
+ 'gem_mmap_offset',
'gem_mmap_offset_exhaustion',
'gem_mmap_wc',
'gem_partial_pwrite_pread',
--
2.23.0