1/*
2 * Copyright © 2009 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Eric Anholt <eric@anholt.net>
25 *
26 */
27
28#include "brw_context.h"
29#include "brw_state.h"
30#include "brw_defines.h"
31#include "intel_batchbuffer.h"
32
33static void
34upload_gs_state(struct brw_context *brw)
35{
36   struct intel_context *intel = &brw->intel;
37
38   /* Disable all the constant buffers. */
39   BEGIN_BATCH(5);
40   OUT_BATCH(_3DSTATE_CONSTANT_GS << 16 | (5 - 2));
41   OUT_BATCH(0);
42   OUT_BATCH(0);
43   OUT_BATCH(0);
44   OUT_BATCH(0);
45   ADVANCE_BATCH();
46
47   if (brw->gs.prog_active) {
48      BEGIN_BATCH(7);
49      OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
50      OUT_BATCH(brw->gs.prog_offset);
51      OUT_BATCH(GEN6_GS_SPF_MODE | GEN6_GS_VECTOR_MASK_ENABLE);
52      OUT_BATCH(0); /* no scratch space */
53      OUT_BATCH((2 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
54	        (brw->gs.prog_data->urb_read_length << GEN6_GS_URB_READ_LENGTH_SHIFT));
55      OUT_BATCH(((brw->max_gs_threads - 1) << GEN6_GS_MAX_THREADS_SHIFT) |
56	        GEN6_GS_STATISTICS_ENABLE |
57		GEN6_GS_SO_STATISTICS_ENABLE |
58		GEN6_GS_RENDERING_ENABLE);
59      OUT_BATCH(GEN6_GS_SVBI_PAYLOAD_ENABLE |
60                GEN6_GS_SVBI_POSTINCREMENT_ENABLE |
61                (brw->gs.prog_data->svbi_postincrement_value <<
62                 GEN6_GS_SVBI_POSTINCREMENT_VALUE_SHIFT) |
63                GEN6_GS_ENABLE);
64      ADVANCE_BATCH();
65   } else {
66      BEGIN_BATCH(7);
67      OUT_BATCH(_3DSTATE_GS << 16 | (7 - 2));
68      OUT_BATCH(0); /* prog_bo */
69      OUT_BATCH((0 << GEN6_GS_SAMPLER_COUNT_SHIFT) |
70		(0 << GEN6_GS_BINDING_TABLE_ENTRY_COUNT_SHIFT));
71      OUT_BATCH(0); /* scratch space base offset */
72      OUT_BATCH((1 << GEN6_GS_DISPATCH_START_GRF_SHIFT) |
73		(0 << GEN6_GS_URB_READ_LENGTH_SHIFT) |
74		(0 << GEN6_GS_URB_ENTRY_READ_OFFSET_SHIFT));
75      OUT_BATCH((0 << GEN6_GS_MAX_THREADS_SHIFT) |
76		GEN6_GS_STATISTICS_ENABLE |
77		GEN6_GS_RENDERING_ENABLE);
78      OUT_BATCH(0);
79      ADVANCE_BATCH();
80   }
81}
82
83const struct brw_tracked_state gen6_gs_state = {
84   .dirty = {
85      .mesa  = _NEW_TRANSFORM,
86      .brw   = BRW_NEW_CONTEXT,
87      .cache = CACHE_NEW_GS_PROG
88   },
89   .emit = upload_gs_state,
90};
91