vc4: Initial skeleton driver import.

This mostly just takes every draw call and turns it into a sequence of
commands that clear the FBO and draw a single shaded triangle to it,
regardless of the actual input vertices or shaders.  I copied the initial
driver skeleton mostly from freedreno, and I've preserved Rob Clark's
copyright for those.  I also based my initial hardcoded shaders and
command lists on Scott Mansell (phire)'s "hackdriver" project, though the
bit patterns of the shaders emitted end up being different.

v2: Rebase on gallium megadrivers changes.
v3: Rebase on PIPE_SHADER_CAP_MAX_CONSTS change.
v4: Rely on simpenrose actually being installed when building for
    simulation.
v5: Add more header duplicate-include guards.
v6: Apply Emil's review (protection against vc4 sim and ilo at the same
    time, and dropping the dricommon drm bits) and fix a copyright header
    (thanks, Roland)

1 files changed, 83 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_bufmgr.h b/src/gallium/drivers/vc4/vc4_bufmgr.h
new file mode 100644
index 00000000000..14bfa2466df
--- /dev/null
+++ b/src/gallium/drivers/vc4/vc4_bufmgr.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2014 Broadcom
+ *
+ * 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 VC4_BUFMGR_H
+#define VC4_BUFMGR_H
+
+#include <stdint.h>
+#include "util/u_inlines.h"
+
+struct vc4_context;
+
+struct vc4_bo {
+        struct pipe_reference reference;
+        struct vc4_screen *screen;
+        void *map;
+        const char *name;
+        uint32_t handle;
+        uint32_t size;
+
+#ifdef USE_VC4_SIMULATOR
+        void *simulator_winsys_map;
+        uint32_t simulator_winsys_stride;
+#endif
+};
+
+struct vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
+                            const char *name);
+struct vc4_bo *vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data,
+                                uint32_t size, const char *name);
+void vc4_bo_free(struct vc4_bo *bo);
+struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
+                                uint32_t winsys_stride);
+bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
+
+static inline void
+vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
+{
+        if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
+                vc4_bo_free(*old_bo);
+        *old_bo = new_bo;
+}
+
+static inline struct vc4_bo *
+vc4_bo_reference(struct vc4_bo *bo)
+{
+        pipe_reference(NULL, &bo->reference);
+        return bo;
+}
+
+static inline void
+vc4_bo_unreference(struct vc4_bo **bo)
+{
+        if (pipe_reference(&(*bo)->reference, NULL))
+                vc4_bo_free(*bo);
+        *bo = NULL;
+}
+
+
+void *
+vc4_bo_map(struct vc4_bo *bo);
+
+#endif /* VC4_BUFMGR_H */
+