intel/common: Add interface to allocate device buffers

Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/intel/Makefile.sources

@@ -8,6 +8,7 @@ BLORP_FILES = \
 	blorp/blorp_priv.h
 
 COMMON_FILES = \
+	common/gen_buffer_alloc.h \
 	common/gen_clflush.h \
 	common/gen_batch_decoder.c \
 	common/gen_decoder.c \

src/intel/common/gen_buffer_alloc.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2018 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 GEN_BUFFER_ALLOC_H
+#define GEN_BUFFER_ALLOC_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct gen_buffer {
+   uint64_t gpu;
+   uint64_t gpu_end;
+   void *map;
+   void *driver_bo;
+};
+
+struct gen_mapped_pinned_buffer_alloc {
+   struct gen_buffer * (*alloc)(void *driver_ctx, uint32_t size);
+   void (*free)(void *driver_ctx, struct gen_buffer *buffer);
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GEN_BUFFER_ALLOC_H */

src/intel/common/meson.build

@@ -21,6 +21,7 @@
 # TODO: android?
 
 files_libintel_common = files(
+  'gen_buffer_alloc.h',
   'gen_clflush.h',
   'gen_batch_decoder.c',
   'gen_decoder.c',