etnaviv: gallium driver for Vivante GPUs

This driver supports a wide range of Vivante IP cores like GC880,
GC1000, GC2000 and GC3000.

Changes from V1 -> V2:
 - added missing files to actually integrate the driver into build system.
 - adapted driver to new renderonly API

Signed-off-by: Christian Gmeiner <[email protected]>
Signed-off-by: Lucas Stach <[email protected]>
Signed-off-by: Philipp Zabel <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Russell King <[email protected]>
Signed-off-by: Wladimir J. van der Laan <[email protected]>
Acked-by: Emil Velikov <[email protected]>

1 files changed, 96 insertions, 0 deletions

diff --git a/src/gallium/drivers/etnaviv/etnaviv_tiling.c b/src/gallium/drivers/etnaviv/etnaviv_tiling.c
new file mode 100644
index 00000000000..f4f85c1d6e6
--- /dev/null
+++ b/src/gallium/drivers/etnaviv/etnaviv_tiling.c
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2012-2015 Etnaviv Project
+ *
+ * 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, sub license,
+ * 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 NON-INFRINGEMENT. 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:
+ *    Wladimir J. van der Laan <[email protected]>
+ */
+
+#include "etnaviv_tiling.h"
+
+#include <stdint.h>
+#include <stdio.h>
+
+#define TEX_TILE_WIDTH (4)
+#define TEX_TILE_HEIGHT (4)
+#define TEX_TILE_WORDS (TEX_TILE_WIDTH * TEX_TILE_HEIGHT)
+
+#define DO_TILE(type)                                                   \
+   src_stride /= sizeof(type);                                          \
+   dst_stride = (dst_stride * TEX_TILE_HEIGHT) / sizeof(type);          \
+   for (unsigned srcy = 0; srcy < height; ++srcy) {                     \
+      unsigned dsty = basey + srcy;                                     \
+      unsigned ty = (dsty / TEX_TILE_HEIGHT) * dst_stride +             \
+                    (dsty % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH;          \
+      for (unsigned srcx = 0; srcx < width; ++srcx) {                   \
+         unsigned dstx = basex + srcx;                                  \
+         ((type *)dest)[ty + (dstx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
+                        (dstx % TEX_TILE_WIDTH)] =                      \
+            ((type *)src)[srcy * src_stride + srcx];                    \
+      }                                                                 \
+   }
+
+#define DO_UNTILE(type)                                                   \
+   src_stride = (src_stride * TEX_TILE_HEIGHT) / sizeof(type);            \
+   dst_stride /= sizeof(type);                                            \
+   for (unsigned dsty = 0; dsty < height; ++dsty) {                       \
+      unsigned srcy = basey + dsty;                                       \
+      unsigned sy = (srcy / TEX_TILE_HEIGHT) * src_stride +               \
+                    (srcy % TEX_TILE_HEIGHT) * TEX_TILE_WIDTH;            \
+      for (unsigned dstx = 0; dstx < width; ++dstx) {                     \
+         unsigned srcx = basex + dstx;                                    \
+         ((type *)dest)[dsty * dst_stride + dstx] =                       \
+            ((type *)src)[sy + (srcx / TEX_TILE_WIDTH) * TEX_TILE_WORDS + \
+                          (srcx % TEX_TILE_WIDTH)];                       \
+      }                                                                   \
+   }
+
+void
+etna_texture_tile(void *dest, void *src, unsigned basex, unsigned basey,
+                  unsigned dst_stride, unsigned width, unsigned height,
+                  unsigned src_stride, unsigned elmtsize)
+{
+   if (elmtsize == 4) {
+      DO_TILE(uint32_t)
+   } else if (elmtsize == 2) {
+      DO_TILE(uint16_t)
+   } else if (elmtsize == 1) {
+      DO_TILE(uint8_t)
+   } else {
+      printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
+   }
+}
+
+void
+etna_texture_untile(void *dest, void *src, unsigned basex, unsigned basey,
+                    unsigned src_stride, unsigned width, unsigned height,
+                    unsigned dst_stride, unsigned elmtsize)
+{
+   if (elmtsize == 4) {
+      DO_UNTILE(uint32_t);
+   } else if (elmtsize == 2) {
+      DO_UNTILE(uint16_t);
+   } else if (elmtsize == 1) {
+      DO_UNTILE(uint8_t);
+   } else {
+      printf("etna_texture_tile: unhandled element size %i\n", elmtsize);
+   }
+}