drm/i915/selftests: Split igt_atomic_reset testcase

Split igt_atomic_reset selftests into separate full & engines parts,
so we can move former to the dedicated reset selftests file.

While here change engines test to loop first over atomic phases and
then loop over available engines.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190522193203.23932-3-michal.wajdeczko@intel.com

1 files changed, 56 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/selftests/igt_atomic.h b/drivers/gpu/drm/i915/selftests/igt_atomic.h
new file mode 100644
index 000000000000..93ec89f487ec
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_atomic.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef IGT_ATOMIC_H
+#define IGT_ATOMIC_H
+
+#include <linux/preempt.h>
+#include <linux/bottom_half.h>
+#include <linux/irqflags.h>
+
+static void __preempt_begin(void)
+{
+	preempt_disable();
+}
+
+static void __preempt_end(void)
+{
+	preempt_enable();
+}
+
+static void __softirq_begin(void)
+{
+	local_bh_disable();
+}
+
+static void __softirq_end(void)
+{
+	local_bh_enable();
+}
+
+static void __hardirq_begin(void)
+{
+	local_irq_disable();
+}
+
+static void __hardirq_end(void)
+{
+	local_irq_enable();
+}
+
+struct igt_atomic_section {
+	const char *name;
+	void (*critical_section_begin)(void);
+	void (*critical_section_end)(void);
+};
+
+static const struct igt_atomic_section igt_atomic_phases[] = {
+	{ "preempt", __preempt_begin, __preempt_end },
+	{ "softirq", __softirq_begin, __softirq_end },
+	{ "hardirq", __hardirq_begin, __hardirq_end },
+	{ }
+};
+
+#endif /* IGT_ATOMIC_H */