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, 194 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_packet.h b/src/gallium/drivers/vc4/vc4_packet.h
new file mode 100644
index 00000000000..e7c334c5556
--- /dev/null
+++ b/src/gallium/drivers/vc4/vc4_packet.h
@@ -0,0 +1,194 @@
+/*
+ * 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_PACKET_H
+#define VC4_PACKET_H
+
+enum vc4_packet {
+        VC4_PACKET_HALT = 0,
+        VC4_PACKET_NOP = 1,
+
+        VC4_PACKET_FLUSH = 4,
+        VC4_PACKET_FLUSH_ALL = 5,
+        VC4_PACKET_START_TILE_BINNING = 6,
+        VC4_PACKET_INCREMENT_SEMAPHORE = 7,
+        VC4_PACKET_WAIT_ON_SEMAPHORE = 8,
+
+        VC4_PACKET_BRANCH = 16,
+        VC4_PACKET_BRANCH_TO_SUB_LIST = 17,
+
+        VC4_PACKET_STORE_MS_TILE_BUFFER = 24,
+        VC4_PACKET_STORE_MS_TILE_BUFFER_AND_EOF = 25,
+        VC4_PACKET_STORE_FULL_RES_TILE_BUFFER = 26,
+        VC4_PACKET_LOAD_FULL_RES_TILE_BUFFER = 27,
+        VC4_PACKET_STORE_TILE_BUFFER_GENERAL = 28,
+        VC4_PACKET_LOAD_TILE_BUFFER_GENERAL = 29,
+
+        VC4_PACKET_GL_INDEXED_PRIMITIVE = 32,
+        VC4_PACKET_GL_ARRAY_PRIMITIVE = 33,
+
+        VC4_PACKET_COMPRESSED_PRIMITIVE = 48,
+        VC4_PACKET_CLIPPED_COMPRESSED_PRIMITIVE = 49,
+
+        VC4_PACKET_PRIMITIVE_LIST_FORMAT = 56,
+
+        VC4_PACKET_GL_SHADER_STATE = 64,
+        VC4_PACKET_NV_SHADER_STATE = 65,
+        VC4_PACKET_VG_SHADER_STATE = 66,
+
+        VC4_PACKET_CONFIGURATION_BITS = 96,
+        VC4_PACKET_FLAT_SHADE_FLAGS = 97,
+        VC4_PACKET_POINT_SIZE = 98,
+        VC4_PACKET_LINE_WIDTH = 99,
+        VC4_PACKET_RHT_X_BOUNDARY = 100,
+        VC4_PACKET_DEPTH_OFFSET = 101,
+        VC4_PACKET_CLIP_WINDOW = 102,
+        VC4_PACKET_VIEWPORT_OFFSET = 103,
+        VC4_PACKET_Z_CLIPPING = 104,
+        VC4_PACKET_CLIPPER_XY_SCALING = 105,
+        VC4_PACKET_CLIPPER_Z_SCALING = 106,
+
+        VC4_PACKET_TILE_BINNING_MODE_CONFIG = 112,
+        VC4_PACKET_TILE_RENDERING_MODE_CONFIG = 113,
+        VC4_PACKET_CLEAR_COLORS = 114,
+        VC4_PACKET_TILE_COORDINATES = 115,
+        GEM_HANDLES = 254,
+} __attribute__ ((__packed__));
+
+/** @{
+ * byte 2 of VC4_PACKET_STORE_TILE_BUFFER_GENERAL (low bits of the
+ * address)
+ */
+
+#define VC4_STORE_TILE_BUFFER_DISABLE_FULL_VG_MASK_DUMP (1 << 2)
+#define VC4_STORE_TILE_BUFFER_DISABLE_FULL_ZS_DUMP      (1 << 1)
+#define VC4_STORE_TILE_BUFFER_DISABLE_FULL_COLOR_DUMP   (1 << 0)
+
+/** @} */
+
+/** @{ byte 1 of VC4_PACKET_STORE_TILE_BUFFER_GENERAL */
+#define VC4_STORE_TILE_BUFFER_DISABLE_VG_MASK_CLEAR (1 << 7)
+#define VC4_STORE_TILE_BUFFER_DISABLE_ZS_CLEAR     (1 << 6)
+#define VC4_STORE_TILE_BUFFER_DISABLE_COLOR_CLEAR  (1 << 5)
+#define VC4_STORE_TILE_BUFFER_DISABLE_SWAP         (1 << 4)
+
+#define VC4_STORE_TILE_BUFFER_RGBA8888             (0 << 0)
+#define VC4_STORE_TILE_BUFFER_BGR565_DITHER        (1 << 0)
+#define VC4_STORE_TILE_BUFFER_BGR565               (2 << 0)
+/** @} */
+
+/** @{ byte 0 of VC4_PACKET_STORE_TILE_BUFFER_GENERAL */
+#define VC4_STORE_TILE_BUFFER_MODE_SAMPLE0         (0 << 6)
+#define VC4_STORE_TILE_BUFFER_MODE_DECIMATE_X4     (1 << 6)
+#define VC4_STORE_TILE_BUFFER_MODE_DECIMATE_X16    (2 << 6)
+
+#define VC4_STORE_TILE_BUFFER_FORMAT_RASTER        (0 << 4)
+#define VC4_STORE_TILE_BUFFER_FORMAT_T             (1 << 4)
+#define VC4_STORE_TILE_BUFFER_FORMAT_LT            (2 << 4)
+
+#define VC4_STORE_TILE_BUFFER_NONE                 (0 << 0)
+#define VC4_STORE_TILE_BUFFER_COLOR                (1 << 0)
+#define VC4_STORE_TILE_BUFFER_ZS                   (2 << 0)
+#define VC4_STORE_TILE_BUFFER_Z                    (3 << 0)
+#define VC4_STORE_TILE_BUFFER_VG_MASK              (4 << 0)
+#define VC4_STORE_TILE_BUFFER_FULL                 (5 << 0)
+/** @} */
+
+/* This flag is only present in NV shader state. */
+#define VC4_SHADER_FLAG_SHADED_CLIP_COORDS         (1 << 3)
+#define VC4_SHADER_FLAG_ENABLE_CLIPPING            (1 << 2)
+#define VC4_SHADER_FLAG_VS_POINT_SIZE              (1 << 1)
+#define VC4_SHADER_FLAG_FS_SINGLE_THREAD           (1 << 0)
+
+/** @{ byte 2 of config bits. */
+#define VC4_CONFIG_BITS_EARLY_Z_UPDATE             (1 << 1)
+#define VC4_CONFIG_BITS_EARLY_Z                    (1 << 0)
+/** @} */
+
+/** @{ byte 1 of config bits. */
+#define VC4_CONFIG_BITS_Z_UPDATE                   (1 << 7)
+/** same values in this 3-bit field as PIPE_FUNC_* */
+#define VC4_CONFIG_BITS_DEPTH_FUNC_SHIFT           4
+#define VC4_CONFIG_BITS_COVERAGE_READ_LEAVE        (1 << 3)
+
+#define VC4_CONFIG_BITS_COVERAGE_UPDATE_NONZERO    (0 << 1)
+#define VC4_CONFIG_BITS_COVERAGE_UPDATE_ODD        (1 << 1)
+#define VC4_CONFIG_BITS_COVERAGE_UPDATE_OR         (2 << 1)
+#define VC4_CONFIG_BITS_COVERAGE_UPDATE_ZERO       (3 << 1)
+
+#define VC4_CONFIG_BITS_COVERAGE_PIPE_SELECT       (1 << 0)
+/** @} */
+
+/** @{ byte 0 of config bits. */
+#define VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_NONE (0 << 6)
+#define VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_4X   (1 << 6)
+#define VC4_CONFIG_BITS_RASTERIZER_OVERSAMPLE_16X  (2 << 6)
+
+#define VC4_CONFIG_BITS_AA_POINTS_AND_LINES        (1 << 4)
+#define VC4_CONFIG_BITS_ENABLE_DEPTH_OFFSET        (1 << 3)
+#define VC4_CONFIG_BITS_CW_PRIMITIVES              (1 << 2)
+#define VC4_CONFIG_BITS_ENABLE_PRIM_BACK           (1 << 1)
+#define VC4_CONFIG_BITS_ENABLE_PRIM_FRONT          (1 << 0)
+/** @} */
+
+/** @{ bits in the last u8 of VC4_PACKET_TILE_BINNING_MODE_CONFIG */
+#define VC4_BIN_CONFIG_DB_NON_MS                   (1 << 7)
+
+#define VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_32         (0 << 5)
+#define VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_64         (1 << 5)
+#define VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_128        (2 << 5)
+#define VC4_BIN_CONFIG_ALLOC_BLOCK_SIZE_256        (3 << 5)
+
+#define VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_32    (0 << 3)
+#define VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_64    (1 << 3)
+#define VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_128   (2 << 3)
+#define VC4_BIN_CONFIG_ALLOC_INIT_BLOCK_SIZE_256   (3 << 3)
+
+#define VC4_BIN_CONFIG_AUTO_INIT_TSDA              (1 << 2)
+#define VC4_BIN_CONFIG_TILE_BUFFER_64BIT           (1 << 1)
+#define VC4_BIN_CONFIG_MS_MODE_4X                  (1 << 0)
+/** @} */
+
+/** @{ bits in the last u16 of VC4_PACKET_TILE_RENDERING_MODE_CONFIG */
+#define VC4_RENDER_CONFIG_DB_NON_MS                (1 << 12)
+#define VC4_RENDER_CONFIG_EARLY_Z_COVERAGE_DISABLE (1 << 11)
+#define VC4_RENDER_CONFIG_EARLY_Z_DIRECTION_G      (1 << 10)
+#define VC4_RENDER_CONFIG_COVERAGE_MODE            (1 << 9)
+#define VC4_RENDER_CONFIG_ENABLE_VG_MASK           (1 << 8)
+
+#define VC4_RENDER_CONFIG_MEMORY_FORMAT_LINEAR     (0 << 6)
+#define VC4_RENDER_CONFIG_MEMORY_FORMAT_T          (1 << 6)
+#define VC4_RENDER_CONFIG_MEMORY_FORMAT_LT         (2 << 6)
+
+#define VC4_RENDER_CONFIG_DECIMATE_MODE_1X         (0 << 4)
+#define VC4_RENDER_CONFIG_DECIMATE_MODE_4X         (1 << 4)
+#define VC4_RENDER_CONFIG_DECIMATE_MODE_16X        (2 << 4)
+
+#define VC4_RENDER_CONFIG_FORMAT_BGR565            (0 << 2)
+#define VC4_RENDER_CONFIG_FORMAT_RGBA8888          (1 << 2)
+#define VC4_RENDER_CONFIG_FORMAT_BGR565_DITHERED   (2 << 2)
+
+#define VC4_RENDER_CONFIG_TILE_BUFFER_64BIT        (1 << 1)
+#define VC4_RENDER_CONFIG_MS_MODE_4X               (1 << 0)
+
+#endif /* VC4_PACKET_H */