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, 63 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_screen.h b/src/gallium/drivers/vc4/vc4_screen.h
new file mode 100644
index 00000000000..64bd2cf6510
--- /dev/null
+++ b/src/gallium/drivers/vc4/vc4_screen.h
@@ -0,0 +1,63 @@
+/*
+ * 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_SCREEN_H
+#define VC4_SCREEN_H
+
+#include "pipe/p_screen.h"
+#include "state_tracker/drm_driver.h"
+
+struct vc4_bo;
+
+#define VC4_DBG_CL        0x0001
+
+#define VC4_MAX_MIP_LEVELS 11
+
+struct vc4_screen {
+        struct pipe_screen base;
+        int fd;
+
+        void *simulator_mem_base;
+        uint32_t simulator_mem_next;
+        uint32_t simulator_mem_size;
+};
+
+static inline struct vc4_screen *
+vc4_screen(struct pipe_screen *screen)
+{
+        return (struct vc4_screen *)screen;
+}
+
+struct pipe_screen *vc4_screen_create(int fd);
+boolean vc4_screen_bo_get_handle(struct pipe_screen *pscreen,
+                                 struct vc4_bo *bo,
+                                 unsigned stride,
+                                 struct winsys_handle *whandle);
+struct vc4_bo *
+vc4_screen_bo_from_handle(struct pipe_screen *pscreen,
+                          struct winsys_handle *whandle,
+                          unsigned *out_stride);
+
+uint8_t vc4_get_texture_format(enum pipe_format format);
+
+#endif /* VC4_SCREEN_H */