1 files changed, 96 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h
new file mode 100644
index 000000000..e46592956
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright © 2016 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.
+ *
+ */
+
+#ifndef __I915_GEM_H__
+#define __I915_GEM_H__
+
+#include <linux/bug.h>
+#include <linux/interrupt.h>
+
+struct drm_i915_private;
+
+#ifdef CONFIG_DRM_I915_DEBUG_GEM
+
+#define GEM_SHOW_DEBUG() (drm_debug & DRM_UT_DRIVER)
+
+#define GEM_BUG_ON(condition) do { if (unlikely((condition))) {	\
+		pr_err("%s:%d GEM_BUG_ON(%s)\n", \
+		       __func__, __LINE__, __stringify(condition)); \
+		GEM_TRACE("%s:%d GEM_BUG_ON(%s)\n", \
+			  __func__, __LINE__, __stringify(condition)); \
+		BUG(); \
+		} \
+	} while(0)
+#define GEM_WARN_ON(expr) WARN_ON(expr)
+
+#define GEM_DEBUG_DECL(var) var
+#define GEM_DEBUG_EXEC(expr) expr
+#define GEM_DEBUG_BUG_ON(expr) GEM_BUG_ON(expr)
+
+#else
+
+#define GEM_SHOW_DEBUG() (0)
+
+#define GEM_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
+#define GEM_WARN_ON(expr) (BUILD_BUG_ON_INVALID(expr), 0)
+
+#define GEM_DEBUG_DECL(var)
+#define GEM_DEBUG_EXEC(expr) do { } while (0)
+#define GEM_DEBUG_BUG_ON(expr)
+#endif
+
+#if IS_ENABLED(CONFIG_DRM_I915_TRACE_GEM)
+#define GEM_TRACE(...) trace_printk(__VA_ARGS__)
+#define GEM_TRACE_DUMP() ftrace_dump(DUMP_ALL)
+#define GEM_TRACE_DUMP_ON(expr) \
+	do { if (expr) ftrace_dump(DUMP_ALL); } while (0)
+#else
+#define GEM_TRACE(...) do { } while (0)
+#define GEM_TRACE_DUMP() do { } while (0)
+#define GEM_TRACE_DUMP_ON(expr) BUILD_BUG_ON_INVALID(expr)
+#endif
+
+#define I915_NUM_ENGINES 8
+
+void i915_gem_park(struct drm_i915_private *i915);
+void i915_gem_unpark(struct drm_i915_private *i915);
+
+static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
+{
+	if (atomic_inc_return(&t->count) == 1)
+		tasklet_unlock_wait(t);
+}
+
+static inline void __tasklet_enable_sync_once(struct tasklet_struct *t)
+{
+	if (atomic_dec_return(&t->count) == 0)
+		tasklet_kill(t);
+}
+
+static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
+{
+	return !atomic_read(&t->count);
+}
+
+#endif /* __I915_GEM_H__ */