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;
35struct compiled_rs_state;
36
37struct etna_coalesce {
38   uint32_t start;
39   uint32_t last_reg;
40   uint32_t last_fixp;
41};
42
43static inline void
44etna_emit_load_state(struct etna_cmd_stream *stream, const uint16_t offset,
45                     const uint16_t count, const int fixp)
46{
47   uint32_t v;
48
49   v = VIV_FE_LOAD_STATE_HEADER_OP_LOAD_STATE |
50       COND(fixp, VIV_FE_LOAD_STATE_HEADER_FIXP) |
51       VIV_FE_LOAD_STATE_HEADER_OFFSET(offset) |
52       (VIV_FE_LOAD_STATE_HEADER_COUNT(count) &
53        VIV_FE_LOAD_STATE_HEADER_COUNT__MASK);
54
55   etna_cmd_stream_emit(stream, v);
56}
57
58static inline void
59etna_set_state(struct etna_cmd_stream *stream, uint32_t address, uint32_t value)
60{
61   etna_cmd_stream_reserve(stream, 2);
62   etna_emit_load_state(stream, address >> 2, 1, 0);
63   etna_cmd_stream_emit(stream, value);
64}
65
66static inline void
67etna_set_state_reloc(struct etna_cmd_stream *stream, uint32_t address,
68                     const struct etna_reloc *reloc)
69{
70   etna_cmd_stream_reserve(stream, 2);
71   etna_emit_load_state(stream, address >> 2, 1, 0);
72   etna_cmd_stream_reloc(stream, reloc);
73}
74
75static inline void
76etna_set_state_multi(struct etna_cmd_stream *stream, uint32_t base,
77                     uint32_t num, const uint32_t *values)
78{
79   if (num == 0)
80      return;
81
82   etna_cmd_stream_reserve(stream, 1 + num + 1); /* 1 extra for potential alignment */
83   etna_emit_load_state(stream, base >> 2, num, 0);
84
85   for (uint32_t i = 0; i < num; i++)
86      etna_cmd_stream_emit(stream, values[i]);
87
88   /* add potential padding */
89   if ((num % 2) == 0)
90      etna_cmd_stream_emit(stream, 0);
91}
92
93void
94etna_stall(struct etna_cmd_stream *stream, uint32_t from, uint32_t to);
95
96static inline void
97etna_draw_primitives(struct etna_cmd_stream *stream, uint32_t primitive_type,
98                     uint32_t start, uint32_t count)
99{
100   etna_cmd_stream_reserve(stream, 4);
101
102   etna_cmd_stream_emit(stream, VIV_FE_DRAW_PRIMITIVES_HEADER_OP_DRAW_PRIMITIVES);
103   etna_cmd_stream_emit(stream, primitive_type);
104   etna_cmd_stream_emit(stream, start);
105   etna_cmd_stream_emit(stream, count);
106}
107
108static inline void
109etna_draw_indexed_primitives(struct etna_cmd_stream *stream,
110                             uint32_t primitive_type, uint32_t start,
111                             uint32_t count, uint32_t offset)
112{
113   etna_cmd_stream_reserve(stream, 5 + 1);
114
115   etna_cmd_stream_emit(stream, VIV_FE_DRAW_INDEXED_PRIMITIVES_HEADER_OP_DRAW_INDEXED_PRIMITIVES);
116   etna_cmd_stream_emit(stream, primitive_type);
117   etna_cmd_stream_emit(stream, start);
118   etna_cmd_stream_emit(stream, count);
119   etna_cmd_stream_emit(stream, offset);
120   etna_cmd_stream_emit(stream, 0);
121}
122
123/* important: this takes a vertex count, not a primitive count */
124static inline void
125etna_draw_instanced(struct etna_cmd_stream *stream,
126                    uint32_t indexed, uint32_t primitive_type,
127                    uint32_t instance_count,
128                    uint32_t vertex_count, uint32_t offset)
129{
130   etna_cmd_stream_reserve(stream, 3 + 1);
131   etna_cmd_stream_emit(stream,
132      VIV_FE_DRAW_INSTANCED_HEADER_OP_DRAW_INSTANCED |
133      COND(indexed, VIV_FE_DRAW_INSTANCED_HEADER_INDEXED) |
134      VIV_FE_DRAW_INSTANCED_HEADER_TYPE(primitive_type) |
135      VIV_FE_DRAW_INSTANCED_HEADER_INSTANCE_COUNT_LO(instance_count & 0xffff));
136   etna_cmd_stream_emit(stream,
137      VIV_FE_DRAW_INSTANCED_COUNT_INSTANCE_COUNT_HI(instance_count >> 16) |
138      VIV_FE_DRAW_INSTANCED_COUNT_VERTEX_COUNT(vertex_count));
139   etna_cmd_stream_emit(stream,
140      VIV_FE_DRAW_INSTANCED_START_INDEX(offset));
141   etna_cmd_stream_emit(stream, 0);
142}
143
144static inline void
145etna_coalesce_start(struct etna_cmd_stream *stream,
146                    struct etna_coalesce *coalesce)
147{
148   coalesce->start = etna_cmd_stream_offset(stream);
149   coalesce->last_reg = 0;
150   coalesce->last_fixp = 0;
151}
152
153static inline void
154etna_coalesce_end(struct etna_cmd_stream *stream,
155                  struct etna_coalesce *coalesce)
156{
157   uint32_t end = etna_cmd_stream_offset(stream);
158   uint32_t size = end - coalesce->start;
159
160   if (size) {
161      uint32_t offset = coalesce->start - 1;
162      uint32_t value = etna_cmd_stream_get(stream, offset);
163
164      value |= VIV_FE_LOAD_STATE_HEADER_COUNT(size);
165      etna_cmd_stream_set(stream, offset, value);
166   }
167
168   /* append needed padding */
169   if (end % 2 == 1)
170      etna_cmd_stream_emit(stream, 0xdeadbeef);
171}
172
173static inline void
174check_coalsence(struct etna_cmd_stream *stream, struct etna_coalesce *coalesce,
175                uint32_t reg, uint32_t fixp)
176{
177   if (coalesce->last_reg != 0) {
178      if (((coalesce->last_reg + 4) != reg) || (coalesce->last_fixp != fixp)) {
179         etna_coalesce_end(stream, coalesce);
180         etna_emit_load_state(stream, reg >> 2, 0, fixp);
181         coalesce->start = etna_cmd_stream_offset(stream);
182      }
183   } else {
184      etna_emit_load_state(stream, reg >> 2, 0, fixp);
185      coalesce->start = etna_cmd_stream_offset(stream);
186   }
187
188   coalesce->last_reg = reg;
189   coalesce->last_fixp = fixp;
190}
191
192static inline void
193etna_coalsence_emit(struct etna_cmd_stream *stream,
194                    struct etna_coalesce *coalesce, uint32_t reg,
195                    uint32_t value)
196{
197   check_coalsence(stream, coalesce, reg, 0);
198   etna_cmd_stream_emit(stream, value);
199}
200
201static inline void
202etna_coalsence_emit_fixp(struct etna_cmd_stream *stream,
203                         struct etna_coalesce *coalesce, uint32_t reg,
204                         uint32_t value)
205{
206   check_coalsence(stream, coalesce, reg, 1);
207   etna_cmd_stream_emit(stream, value);
208}
209
210static inline void
211etna_coalsence_emit_reloc(struct etna_cmd_stream *stream,
212                          struct etna_coalesce *coalesce, uint32_t reg,
213                          const struct etna_reloc *r)
214{
215   if (r->bo) {
216      check_coalsence(stream, coalesce, reg, 0);
217      etna_cmd_stream_reloc(stream, r);
218   }
219}
220
221void
222etna_emit_state(struct etna_context *ctx);
223
224#endif
225