1/*
2 * Copyright (c) 2012-2015 Etnaviv Project
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, sub license,
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
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the 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 NON-INFRINGEMENT. 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
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Wladimir J. van der Laan <laanwj@gmail.com>
25 */
26
27#ifndef H_ETNA_EMIT
28#define H_ETNA_EMIT
29
30#include "etnaviv_screen.h"
31#include "etnaviv_util.h"
32#include "hw/cmdstream.xml.h"
33
34struct etna_context;
35
36struct etna_coalesce {
37   uint32_t start;
38   uint32_t last_reg;
39   uint32_t last_fixp;
40};
41
42static inline void
43etna_emit_load_state(struct etna_cmd_stream *stream, const uint16_t offset,
44                     const uint16_t count, const int fixp)
45{
46   uint32_t v;
47
48   v = VIV_FE_LOAD_STATE_HEADER_OP_LOAD_STATE |
49       COND(fixp, VIV_FE_LOAD_STATE_HEADER_FIXP) |
50       VIV_FE_LOAD_STATE_HEADER_OFFSET(offset) |
51       (VIV_FE_LOAD_STATE_HEADER_COUNT(count) &
52        VIV_FE_LOAD_STATE_HEADER_COUNT__MASK);
53
54   etna_cmd_stream_emit(stream, v);
55}
56
57static inline void
58etna_set_state(struct etna_cmd_stream *stream, uint32_t address, uint32_t value)
59{
60   etna_cmd_stream_reserve(stream, 2);
61   etna_emit_load_state(stream, address >> 2, 1, 0);
62   etna_cmd_stream_emit(stream, value);
63}
64
65static inline void
66etna_set_state_reloc(struct etna_cmd_stream *stream, uint32_t address,
67                     const struct etna_reloc *reloc)
68{
69   etna_cmd_stream_reserve(stream, 2);
70   etna_emit_load_state(stream, address >> 2, 1, 0);
71   etna_cmd_stream_reloc(stream, reloc);
72}
73
74static inline void
75etna_set_state_multi(struct etna_cmd_stream *stream, uint32_t base,
76                     uint32_t num, const uint32_t *values)
77{
78   if (num == 0)
79      return;
80
81   etna_cmd_stream_reserve(stream, 1 + num + 1); /* 1 extra for potential alignment */
82   etna_emit_load_state(stream, base >> 2, num, 0);
83
84   for (uint32_t i = 0; i < num; i++)
85      etna_cmd_stream_emit(stream, values[i]);
86
87   /* add potential padding */
88   if ((num % 2) == 0)
89      etna_cmd_stream_emit(stream, 0);
90}
91
92void
93etna_stall(struct etna_cmd_stream *stream, uint32_t from, uint32_t to);
94
95static inline void
96etna_draw_primitives(struct etna_cmd_stream *stream, uint32_t primitive_type,
97                     uint32_t start, uint32_t count)
98{
99   etna_cmd_stream_reserve(stream, 4);
100
101   etna_cmd_stream_emit(stream, VIV_FE_DRAW_PRIMITIVES_HEADER_OP_DRAW_PRIMITIVES);
102   etna_cmd_stream_emit(stream, primitive_type);
103   etna_cmd_stream_emit(stream, start);
104   etna_cmd_stream_emit(stream, count);
105}
106
107static inline void
108etna_draw_indexed_primitives(struct etna_cmd_stream *stream,
109                             uint32_t primitive_type, uint32_t start,
110                             uint32_t count, uint32_t offset)
111{
112   etna_cmd_stream_reserve(stream, 5 + 1);
113
114   etna_cmd_stream_emit(stream, VIV_FE_DRAW_INDEXED_PRIMITIVES_HEADER_OP_DRAW_INDEXED_PRIMITIVES);
115   etna_cmd_stream_emit(stream, primitive_type);
116   etna_cmd_stream_emit(stream, start);
117   etna_cmd_stream_emit(stream, count);
118   etna_cmd_stream_emit(stream, offset);
119   etna_cmd_stream_emit(stream, 0);
120}
121
122/* important: this takes a vertex count, not a primitive count */
123static inline void
124etna_draw_instanced(struct etna_cmd_stream *stream,
125                    uint32_t indexed, uint32_t primitive_type,
126                    uint32_t instance_count,
127                    uint32_t vertex_count, uint32_t offset)
128{
129   etna_cmd_stream_reserve(stream, 3 + 1);
130   etna_cmd_stream_emit(stream,
131      VIV_FE_DRAW_INSTANCED_HEADER_OP_DRAW_INSTANCED |
132      COND(indexed, VIV_FE_DRAW_INSTANCED_HEADER_INDEXED) |
133      VIV_FE_DRAW_INSTANCED_HEADER_TYPE(primitive_type) |
134      VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO(instance_count & 0xffff));
135   etna_cmd_stream_emit(stream,
136      VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI(instance_count >> 16) |
137      VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT(vertex_count));
138   etna_cmd_stream_emit(stream,
139      VIV_FE_DRAW_INSTANCED_START_INDEX(offset));
140   etna_cmd_stream_emit(stream, 0);
141}
142
143static inline void
144etna_coalesce_start(struct etna_cmd_stream *stream,
145                    struct etna_coalesce *coalesce)
146{
147   coalesce->start = etna_cmd_stream_offset(stream);
148   coalesce->last_reg = 0;
149   coalesce->last_fixp = 0;
150}
151
152static inline void
153etna_coalesce_end(struct etna_cmd_stream *stream,
154                  struct etna_coalesce *coalesce)
155{
156   uint32_t end = etna_cmd_stream_offset(stream);
157   uint32_t size = end - coalesce->start;
158
159   if (size) {
160      uint32_t offset = coalesce->start - 1;
161      uint32_t value = etna_cmd_stream_get(stream, offset);
162
163      value |= VIV_FE_LOAD_STATE_HEADER_COUNT(size);
164      etna_cmd_stream_set(stream, offset, value);
165   }
166
167   /* append needed padding */
168   if (end % 2 == 1)
169      etna_cmd_stream_emit(stream, 0xdeadbeef);
170}
171
172static inline void
173check_coalsence(struct etna_cmd_stream *stream, struct etna_coalesce *coalesce,
174                uint32_t reg, uint32_t fixp)
175{
176   if (coalesce->last_reg != 0) {
177      if (((coalesce->last_reg + 4) != reg) || (coalesce->last_fixp != fixp)) {
178         etna_coalesce_end(stream, coalesce);
179         etna_emit_load_state(stream, reg >> 2, 0, fixp);
180         coalesce->start = etna_cmd_stream_offset(stream);
181      }
182   } else {
183      etna_emit_load_state(stream, reg >> 2, 0, fixp);
184      coalesce->start = etna_cmd_stream_offset(stream);
185   }
186
187   coalesce->last_reg = reg;
188   coalesce->last_fixp = fixp;
189}
190
191static inline void
192etna_coalsence_emit(struct etna_cmd_stream *stream,
193                    struct etna_coalesce *coalesce, uint32_t reg,
194                    uint32_t value)
195{
196   check_coalsence(stream, coalesce, reg, 0);
197   etna_cmd_stream_emit(stream, value);
198}
199
200static inline void
201etna_coalsence_emit_fixp(struct etna_cmd_stream *stream,
202                         struct etna_coalesce *coalesce, uint32_t reg,
203                         uint32_t value)
204{
205   check_coalsence(stream, coalesce, reg, 1);
206   etna_cmd_stream_emit(stream, value);
207}
208
209static inline void
210etna_coalsence_emit_reloc(struct etna_cmd_stream *stream,
211                          struct etna_coalesce *coalesce, uint32_t reg,
212                          const struct etna_reloc *r)
213{
214   if (r->bo) {
215      check_coalsence(stream, coalesce, reg, 0);
216      etna_cmd_stream_reloc(stream, r);
217   }
218}
219
220void
221etna_emit_state(struct etna_context *ctx);
222
223#endif
224