[Intel-gfx] [PATCH 06/49] drm/i915/bdw: New file for logical ring contexts and execlists

[oscar.mateo at intel.com]

From: Oscar Mateo <oscar.mateo at intel.com>

Some legacy HW context and ringbuffer code assumptions don't make sense
for this new submission method, so we will place this stuff in a separate
file.

Note for reviewers: I've carefully considered the best name for this file
and this was my best option (other possibilities were intel_lr_context.c
or intel_execlist.c). I am open to a certain bikeshedding on this matter,
anyway. Regarding splitting execlists and logical ring contexts, it is
probably not worth it for the moment.

Signed-off-by: Oscar Mateo <oscar.mateo at intel.com>
---
 drivers/gpu/drm/i915/Makefile   |  1 +
 drivers/gpu/drm/i915/i915_lrc.c | 42 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/i915_lrc.c

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index b1445b7..e81aed7 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -17,6 +17,7 @@ i915-$(CONFIG_DEBUG_FS) += i915_debugfs.o
 
 # GEM code
 i915-y += i915_cmd_parser.o \
+	  i915_lrc.o \
 	  i915_gem_context.o \
 	  i915_gem_debug.o \
 	  i915_gem_dmabuf.o \
diff --git a/drivers/gpu/drm/i915/i915_lrc.c b/drivers/gpu/drm/i915/i915_lrc.c
new file mode 100644
index 0000000..49bb6fc
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_lrc.c
@@ -0,0 +1,42 @@
+/*
+ * 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:
+ *    Ben Widawsky <ben at bwidawsk.net>
+ *    Michel Thierry <michel.thierry at intel.com>
+ *    Thomas Daniel <thomas.daniel at intel.com>
+ *    Oscar Mateo <oscar.mateo at intel.com>
+ *
+ */
+
+/*
+ * GEN8 brings an expansion of the HW contexts: "Logical Ring Contexts".
+ * These expanded contexts enable a number of new abilities, especially
+ * "Execlists" (also implemented in this file).
+ *
+ * Execlists are the new method by which, on gen8+ hardware, workloads are
+ * submitted for execution (as opposed to the legacy, ringbuffer-based, method).
+ */
+
+#include <drm/drmP.h>
+#include <drm/i915_drm.h>
+#include "i915_drv.h"
-- 
1.9.0