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, 148 insertions, 0 deletions

diff --git a/src/gallium/drivers/etnaviv/etnaviv_resource.h b/src/gallium/drivers/etnaviv/etnaviv_resource.h
new file mode 100644
index 00000000000..a9b288e708b
--- /dev/null
+++ b/src/gallium/drivers/etnaviv/etnaviv_resource.h
@@ -0,0 +1,148 @@
+/*
+ * 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]>
+ */
+
+#ifndef H_ETNAVIV_RESOURCE
+#define H_ETNAVIV_RESOURCE
+
+#include "etnaviv_internal.h"
+#include "etnaviv_tiling.h"
+#include "pipe/p_state.h"
+#include "util/list.h"
+
+struct pipe_screen;
+
+struct etna_resource_level {
+   unsigned width, padded_width; /* in pixels */
+   unsigned height, padded_height; /* in samples */
+   unsigned offset; /* offset into memory area */
+   uint32_t stride; /* row stride */
+   uint32_t layer_stride; /* layer stride */
+   unsigned size; /* total size of memory area */
+
+   uint32_t ts_offset;
+   uint32_t ts_layer_stride;
+   uint32_t ts_size;
+   uint32_t clear_value; /* clear value of resource level (mainly for TS) */
+};
+
+/* status of queued up but not flushed reads and write operations.
+ * In _transfer_map() we need to know if queued up rendering needs
+ * to be flushed to preserve the order of cpu and gpu access. */
+enum etna_resource_status {
+   ETNA_PENDING_WRITE = 0x01,
+   ETNA_PENDING_READ = 0x02,
+};
+
+struct etna_resource {
+   struct pipe_resource base;
+   struct renderonly_scanout *scanout;
+   uint32_t seqno;
+
+   /* only lod 0 used for non-texture buffers */
+   /* Layout for surface (tiled, multitiled, split tiled, ...) */
+   enum etna_surface_layout layout;
+   /* Horizontal alignment for texture unit (TEXTURE_HALIGN_*) */
+   unsigned halign;
+   struct etna_bo *bo; /* Surface video memory */
+   struct etna_bo *ts_bo; /* Tile status video memory */
+
+   struct etna_resource_level levels[ETNA_NUM_LOD];
+
+   /* When we are rendering to a texture, we need a differently tiled resource */
+   struct pipe_resource *texture;
+
+   enum etna_resource_status status;
+
+   /* resources accessed by queued but not flushed draws are tracked
+    * in the used_resources list. */
+   struct list_head list;
+   struct etna_context *pending_ctx;
+};
+
+/* returns TRUE if a is newer than b */
+static inline bool
+etna_resource_newer(struct etna_resource *a, struct etna_resource *b)
+{
+   return (int)(a->seqno - b->seqno) > 0;
+}
+
+/* returns TRUE if a is older than b */
+static inline bool
+etna_resource_older(struct etna_resource *a, struct etna_resource *b)
+{
+   return (int)(a->seqno - b->seqno) < 0;
+}
+
+/* is the resource only used on the sampler? */
+static inline bool
+etna_resource_sampler_only(const struct pipe_resource *pres)
+{
+   return (pres->bind & (PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET |
+                         PIPE_BIND_DEPTH_STENCIL | PIPE_BIND_BLENDABLE)) ==
+          PIPE_BIND_SAMPLER_VIEW;
+}
+
+static inline struct etna_resource *
+etna_resource(struct pipe_resource *p)
+{
+   return (struct etna_resource *)p;
+}
+
+void
+etna_resource_used(struct etna_context *ctx, struct pipe_resource *prsc,
+                   enum etna_resource_status status);
+
+void
+etna_resource_wait(struct pipe_context *ctx, struct etna_resource *rsc);
+
+static inline void
+resource_read(struct etna_context *ctx, struct pipe_resource *prsc)
+{
+   etna_resource_used(ctx, prsc, ETNA_PENDING_READ);
+}
+
+static inline void
+resource_written(struct etna_context *ctx, struct pipe_resource *prsc)
+{
+   etna_resource_used(ctx, prsc, ETNA_PENDING_WRITE);
+}
+
+/* Allocate Tile Status for an etna resource.
+ * Tile status is a cache of the clear status per tile. This means a smaller
+ * surface has to be cleared which is faster.
+ * This is also called "fast clear". */
+bool
+etna_screen_resource_alloc_ts(struct pipe_screen *pscreen,
+                              struct etna_resource *prsc);
+
+struct pipe_resource *
+etna_resource_alloc(struct pipe_screen *pscreen, unsigned layout,
+                    const struct pipe_resource *templat);
+
+void
+etna_resource_screen_init(struct pipe_screen *pscreen);
+
+#endif