From f6dfe556659f5473e4bf13cc8d4770ac39c7d678 Mon Sep 17 00:00:00 2001
From: Michał Winiarski <michal.winiarski@intel.com>
Date: Mon, 16 Oct 2017 11:05:14 +0200
Subject: lib: Extract helpers for determining submission method
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Couple of tests are using either determining submission method, or
pretty printing. Let's move those to helpers in lib.

v2: s/igt_show/gem_show

Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Katarzyna Dec <katarzyna.dec@intel.com>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Katarzyna Dec <katarzyna.dec@intel.com>
Acked-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
---
 lib/igt_gt.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

(limited to 'lib/igt_gt.c')

diff --git a/lib/igt_gt.c b/lib/igt_gt.c
index f6cc20b0..601b03f6 100644
--- a/lib/igt_gt.c
+++ b/lib/igt_gt.c
@@ -607,3 +607,66 @@ bool gem_can_store_dword(int fd, unsigned int engine)
 
 	return true;
 }
+
+/**
+ * gem_submission_method:
+ * @fd: open i915 drm file descriptor
+ *
+ * Returns: Submission method bitmap.
+ */
+unsigned gem_submission_method(int fd)
+{
+	unsigned flags = 0;
+	bool active;
+	int dir;
+
+	dir = igt_sysfs_open_parameters(fd);
+	if (dir < 0)
+		return 0;
+
+	active = igt_sysfs_get_boolean(dir, "enable_guc_submission");
+	if (active) {
+		flags |= GEM_SUBMISSION_GUC | GEM_SUBMISSION_EXECLISTS;
+		goto out;
+	}
+
+	active = igt_sysfs_get_boolean(dir, "enable_execlists");
+	if (active) {
+		flags |= GEM_SUBMISSION_EXECLISTS;
+		goto out;
+	}
+
+	active = igt_sysfs_get_boolean(dir, "semaphores");
+	if (active) {
+		flags |= GEM_SUBMISSION_SEMAPHORES;
+	}
+
+out:
+	close(dir);
+	return flags;
+}
+
+
+/**
+ * gem_has_semaphores:
+ * @fd: open i915 drm file descriptor
+ *
+ * Feature test macro to query whether the driver is using semaphores for
+ * synchronization between engines.
+ */
+bool gem_has_semaphores(int fd)
+{
+	return gem_submission_method(fd) & GEM_SUBMISSION_SEMAPHORES;
+}
+
+/**
+ * gem_has_execlists:
+ * @fd: open i915 drm file descriptor
+ *
+ * Feature test macro to query whether the driver is using execlists as a
+ * hardware submission method.
+ */
+bool gem_has_execlists(int fd)
+{
+	return gem_submission_method(fd) & GEM_SUBMISSION_EXECLISTS;
+}
-- 
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