[igt-dev] [RFC PATCH 3/4] tests/i915/gem_mmap_offset: Add new API test for gem_mmap_offset

[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>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 tests/Makefile.sources       |   3 +
 tests/i915/gem_mmap_offset.c | 197 +++++++++++++++++++++++++++++++++++
 tests/meson.build            |   1 +
 3 files changed, 201 insertions(+)
 create mode 100644 tests/i915/gem_mmap_offset.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 250dbd33..cd7daf4f 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -307,6 +307,9 @@ 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..8c5ed17e
--- /dev/null
+++ b/tests/i915/gem_mmap_offset.c
@@ -0,0 +1,197 @@
+/*
+ * 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");
+
+int fd;
+
+static const char * const mmap_offset_flags[] = {
+	[LOCAL_I915_MMAP_OFFSET_WC] = "wc",
+	[LOCAL_I915_MMAP_OFFSET_WB] = "wb",
+	[LOCAL_I915_MMAP_OFFSET_UC] = "uc"
+};
+
+static int mmap_offset_ioctl(int i915, struct local_i915_gem_mmap_offset *arg)
+{
+	int err = 0;
+
+	if (igt_ioctl(i915, LOCAL_IOCTL_I915_GEM_MMAP_OFFSET, arg))
+		err = -errno;
+
+	errno = 0;
+	return err;
+}
+
+igt_main
+{
+	uint8_t *addr;
+	uint32_t obj_size, batch_size;
+	uint8_t mem_type;
+	uint32_t id;
+	uint32_t num_regions;
+	int ret;
+	const struct intel_memory_region *mr;
+	struct local_i915_query_memory_region_info *query_info;
+
+	igt_fixture {
+		fd = drm_open_driver(DRIVER_INTEL);
+		igt_require(gem_has_mmap_offset(fd));
+
+		query_info = gem_get_query_memory_regions(fd);
+		igt_assert(query_info);
+		num_regions = query_info->num_regions;
+	}
+
+	for (mr = intel_memory_regions; mr->region_name; mr++) {
+		mem_type = mr->mem_region_type;
+		id = mr->id;
+
+		batch_size = gem_get_batch_size(fd, mem_type);
+		obj_size = 4 * batch_size;
+
+		igt_subtest_f("bad-object-%s", mr->region_name) {
+			uint32_t real_handle = gem_create(fd, batch_size);
+			uint32_t handles[20];
+			int i = 0;
+
+			ret = -1;
+
+			ret = gem_find_memory_region_in_query(query_info,
+							      num_regions, id);
+			igt_require(ret);
+
+			ret = gem_bo_set_memory_region(fd, real_handle, id);
+			igt_assert_eq(ret, 0);
+
+			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 to set memory region\n");
+				ret = gem_bo_set_memory_region(fd, arg.handle,
+							       id);
+				igt_assert_eq(ret, -EINVAL);
+
+				igt_debug("Trying MMAP IOCTL with handle %x\n",
+					  handles[i]);
+				igt_assert_eq(mmap_offset_ioctl(fd, &arg),
+					      -EINVAL);
+			}
+
+			gem_close(fd, real_handle);
+		}
+
+		for (unsigned flags = 0; flags < LOCAL_I915_MMAP_OFFSET_FLAGS + 1; flags++) {
+
+			igt_subtest_f("basic-%s-%s", mmap_offset_flags[flags],
+				      mr->region_name) {
+				struct local_i915_gem_mmap_offset arg = {
+					.handle = gem_create(fd, obj_size),
+					.flags = flags,
+				};
+
+				uint8_t *expected;
+				uint8_t *buf;
+
+				ret = gem_find_memory_region_in_query(query_info,
+								      num_regions,
+								      id);
+				igt_require(ret);
+
+				ret = gem_bo_set_memory_region(fd, arg.handle,
+							       id);
+				igt_assert_eq(ret, 0);
+
+				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_info("Testing contents of newly created object.\n");
+				expected = calloc(obj_size, sizeof(expected));
+				memset(expected, 0, obj_size * sizeof(expected));
+				igt_assert_eq(memcmp(addr, expected, obj_size), 0);
+				free(expected);
+
+				igt_info("Testing coherency of writes and mmap reads.\n");
+				buf = calloc(obj_size, sizeof(buf));
+				memset(buf, 0, 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_info("Testing that mapping stays after close\n");
+				gem_close(fd, arg.handle);
+				igt_assert_eq(memcmp(buf, addr, obj_size), 0);
+				free(buf);
+
+				igt_info("Testing unmapping\n");
+				munmap(addr, obj_size);
+			}
+
+			igt_subtest_f("short-mmap-%s-%s", mmap_offset_flags[flags],
+				      mr->region_name) {
+				uint32_t handle = gem_create(fd, obj_size);
+
+				ret = -1;
+
+				ret = gem_find_memory_region_in_query(query_info,
+								      num_regions,
+								      id);
+
+				igt_require(ret);
+
+				ret = gem_bo_set_memory_region(fd, handle, id);
+				igt_assert_eq(ret, 0);
+
+				igt_assert(obj_size > batch_size);
+
+				addr = __gem_mmap_offset(fd, handle, 0,
+							 batch_size, PROT_WRITE,
+							 flags);
+				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 34a74025..236aaede 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -167,6 +167,7 @@ i915_progs = [
 	'gem_media_vme',
 	'gem_mmap',
 	'gem_mmap_gtt',
+	'gem_mmap_offset',
 	'gem_mmap_offset_exhaustion',
 	'gem_mmap_wc',
 	'gem_partial_pwrite_pread',
-- 
2.20.1

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