[PATCH i-g-t v3] tests/core_getparams: Create new test core_getparams

[jeff.mcgee at intel.com]

From: Jeff McGee <jeff.mcgee at intel.com>

New test core_getparams consists of 2 subtests, each one testing
the ability of userspace to query the correct value of a GT config
attribute: subslice total or EU total. drm/i915 implementation of
these queries is required for Cherryview and Gen9+ devices (non-
simulated).

v2: Duplicate small amount of new libdrm functionality to avoid
    bumping libdrm version requirement (Daniel). Convert some
    igt_asserts to the appropriate comparison variants. Add a
    test description.
v3: Actually use the LOCAL GETPARAM defines. Otherwise can't build
    against older libdrm as intended by v2.

For: VIZ-4636
Signed-off-by: Jeff McGee <jeff.mcgee at intel.com>
---
 tests/.gitignore       |   1 +
 tests/Makefile.sources |   1 +
 tests/core_getparams.c | 167 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 169 insertions(+)
 create mode 100644 tests/core_getparams.c

diff --git a/tests/.gitignore b/tests/.gitignore
index 426cc67..c742308 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -1,6 +1,7 @@
 # Please keep sorted alphabetically
 core_get_client_auth
 core_getclient
+core_getparams
 core_getstats
 core_getversion
 drm_import_export
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 51e8376..999c8f8 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -15,6 +15,7 @@ NOUVEAU_TESTS_M = \
 
 TESTS_progs_M = \
 	core_get_client_auth \
+	core_getparams \
 	drv_suspend \
 	drv_hangman \
 	gem_bad_reloc \
diff --git a/tests/core_getparams.c b/tests/core_getparams.c
new file mode 100644
index 0000000..2855d06
--- /dev/null
+++ b/tests/core_getparams.c
@@ -0,0 +1,167 @@
+/*
+ * Copyright © 2014 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:
+ *    Jeff McGee <jeff.mcgee at intel.com>
+ *
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <xf86drm.h>
+#include <i915_drm.h>
+#include "drmtest.h"
+#include "intel_chipset.h"
+#include "intel_bufmgr.h"
+
+IGT_TEST_DESCRIPTION("Tests the export of parameters via DRM_IOCTL_I915_GETPARAM\n");
+
+int drm_fd;
+int devid;
+
+static void
+init(void)
+{
+	drm_fd = drm_open_any();
+	devid = intel_get_drm_devid(drm_fd);
+}
+
+static void
+deinit(void)
+{
+	close(drm_fd);
+}
+
+#define LOCAL_I915_PARAM_SUBSLICE_TOTAL	33
+#define LOCAL_I915_PARAM_EU_TOTAL	34
+
+static int
+getparam(int param, int *value)
+{
+	drm_i915_getparam_t gp;
+	int ret;
+
+	memset(&gp, 0, sizeof(gp));
+	gp.value = value;
+	gp.param = param;
+	ret = drmIoctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp);
+	if (ret)
+		return -errno;
+
+	return 0;
+}
+
+static void
+subslice_total(void)
+{
+	unsigned int subslice_total = 0;
+	int ret;
+
+	ret = getparam(LOCAL_I915_PARAM_SUBSLICE_TOTAL, (int*)&subslice_total);
+
+	if (ret) {
+		/*
+		 * These devices are not required to implement the
+		 * interface. If they do not, -ENODEV must be returned.
+		*/
+		if ((intel_gen(devid) < 8) ||
+		    IS_BROADWELL(devid) ||
+		    igt_run_in_simulation()) {
+			igt_assert_eq(ret, -ENODEV);
+			igt_info("subslice total: unknown\n");
+		/*
+		 * All other devices must implement the interface, so
+		 * fail them if we are here.
+		*/
+		} else {
+			igt_assert_neq(ret, EINVAL); /* request not recognized? */
+			igt_assert_neq(ret, ENODEV); /* device not supported? */
+			igt_assert_eq(ret, 0); /* other error? */
+		}
+	} else {
+		/*
+		 * On success, just make sure the returned count value is
+		 * non-zero. The validity of the count value for the given
+		 * device is not checked.
+		*/
+		igt_assert_neq(subslice_total, 0);
+		igt_info("subslice total: %u\n", subslice_total);
+	}
+}
+
+static void
+eu_total(void)
+{
+	unsigned int eu_total = 0;
+	int ret;
+
+	ret = getparam(LOCAL_I915_PARAM_EU_TOTAL, (int*)&eu_total);
+
+	if (ret) {
+		/*
+		 * These devices are not required to implement the
+		 * interface. If they do not, -ENODEV must be returned.
+		*/
+		if ((intel_gen(devid) < 8) ||
+		    IS_BROADWELL(devid) ||
+		    igt_run_in_simulation()) {
+			igt_assert_eq(ret, -ENODEV);
+			igt_info("EU total: unknown\n");
+		/*
+		 * All other devices must implement the interface, so
+		 * fail them if we are here.
+		*/
+		} else {
+			igt_assert_neq(ret, EINVAL); /* request not recognized? */
+			igt_assert_neq(ret, ENODEV); /* device not supported? */
+			igt_assert_eq(ret, 0); /* other error? */
+		}
+	} else {
+		/*
+		 * On success, just make sure the returned count value is
+		 * non-zero. The validity of the count value for the given
+		 * device is not checked.
+		*/
+		igt_assert_neq(eu_total, 0);
+		igt_info("EU total: %u\n", eu_total);
+	}
+}
+
+static void
+exit_handler(int sig)
+{
+	deinit();
+}
+
+igt_main
+{
+	igt_fixture {
+		igt_install_exit_handler(exit_handler);
+		init();
+	}
+
+	igt_subtest("subslice-total")
+		subslice_total();
+
+	igt_subtest("eu-total")
+		eu_total();
+}
-- 
2.3.0