drm/etnaviv: Allow DRAW_INSTANCED commands

Vivante GPUs with HALTI0 feature support a DRAW_INSTANCED command in the
command stream to draw a number of instances of the same geometry.

The information that has been figured out about the command can be found
here: https://github.com/etnaviv/etna_viv/blob/master/rnndb/cmdstream.xml#L270

This command is not allowed currently by the DRM driver because it
was not known before. This patch enables parsing it in command
streams and allows using it by userspace drivers.

Signed-off-by: Wladimir J. van der Laan <[e-mail]>
Signed-off-by: Lucas Stach <[e-mail]>

drivers/gpu/drm/etnaviv/cmdstream.xml.h

···
 git clone git://0x04.net/rules-ng-ng
 
 The rules-ng-ng source files this header was generated from are:
-- cmdstream.xml (  12589 bytes, from 2014-02-17 14:57:56)
-- common.xml    (  18437 bytes, from 2015-03-25 11:27:41)
+- cmdstream.xml (  14094 bytes, from 2016-11-11 06:55:14)
+- copyright.xml (   1597 bytes, from 2016-10-29 07:29:22)
+- common.xml    (  23344 bytes, from 2016-11-10 15:14:07)
 
-Copyright (C) 2014
+Copyright (C) 2012-2016 by the following authors:
+- Wladimir J. van der Laan <[e-mail]>
+- Christian Gmeiner <[e-mail]>
+- Lucas Stach <[e-mail]>
+- Russell King <[e-mail]>
+
+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.
 */
 
 
···
 #define FE_OPCODE_STALL						0x00000009
 #define FE_OPCODE_CALL						0x0000000a
 #define FE_OPCODE_RETURN					0x0000000b
+#define FE_OPCODE_DRAW_INSTANCED				0x0000000c
 #define FE_OPCODE_CHIP_SELECT					0x0000000d
 #define PRIMITIVE_TYPE_POINTS					0x00000001
 #define PRIMITIVE_TYPE_LINES					0x00000002
···
 #define VIV_FE_CHIP_SELECT_HEADER_ENABLE_CHIP2			0x00000004
 #define VIV_FE_CHIP_SELECT_HEADER_ENABLE_CHIP1			0x00000002
 #define VIV_FE_CHIP_SELECT_HEADER_ENABLE_CHIP0			0x00000001
+
+#define VIV_FE_DRAW_INSTANCED					0x00000000
+
+#define VIV_FE_DRAW_INSTANCED_HEADER				0x00000000
+#define VIV_FE_DRAW_INSTANCED_HEADER_OP__MASK			0xf8000000
+#define VIV_FE_DRAW_INSTANCED_HEADER_OP__SHIFT			27
+#define VIV_FE_DRAW_INSTANCED_HEADER_OP_DRAW_INSTANCED		0x60000000
+#define VIV_FE_DRAW_INSTANCED_HEADER_INDEXED			0x00100000
+#define VIV_FE_DRAW_INSTANCED_HEADER_TYPE__MASK			0x000f0000
+#define VIV_FE_DRAW_INSTANCED_HEADER_TYPE__SHIFT		16
+#define VIV_FE_DRAW_INSTANCED_HEADER_TYPE(x)			(((x) << VIV_FE_DRAW_INSTANCED_HEADER_TYPE__SHIFT) & VIV_FE_DRAW_INSTANCED_HEADER_TYPE__MASK)
+#define VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO__MASK	0x0000ffff
+#define VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO__SHIFT	0
+#define VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO(x)	(((x) << VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO__SHIFT) & VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO__MASK)
+
+#define VIV_FE_DRAW_INSTANCED_COUNT				0x00000004
+#define VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI__MASK	0xff000000
+#define VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI__SHIFT	24
+#define VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI(x)	(((x) << VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI__SHIFT) & VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI__MASK)
+#define VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT__MASK		0x00ffffff
+#define VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT__SHIFT		0
+#define VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT(x)		(((x) << VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT__SHIFT) & VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT__MASK)
+
+#define VIV_FE_DRAW_INSTANCED_START				0x00000008
+#define VIV_FE_DRAW_INSTANCED_START_INDEX__MASK			0xffffffff
+#define VIV_FE_DRAW_INSTANCED_START_INDEX__SHIFT		0
+#define VIV_FE_DRAW_INSTANCED_START_INDEX(x)			(((x) << VIV_FE_DRAW_INSTANCED_START_INDEX__SHIFT) & VIV_FE_DRAW_INSTANCED_START_INDEX__MASK)
 
 
 #endif /* CMDSTREAM_XML */

drivers/gpu/drm/etnaviv/etnaviv_cmd_parser.c

···
 static uint8_t cmd_length[32] = {
 	[FE_OPCODE_DRAW_PRIMITIVES] = 4,
 	[FE_OPCODE_DRAW_INDEXED_PRIMITIVES] = 6,
+	[FE_OPCODE_DRAW_INSTANCED] = 4,
 	[FE_OPCODE_NOP] = 2,
 	[FE_OPCODE_STALL] = 2,
 };