summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/freedreno/a2xx/ir-a2xx.h
blob: ac2931266d4df47b91fd5266e30a240245087ad4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
/*
 * Copyright (c) 2012 Rob Clark <robdclark@gmail.com>
 *
 * 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 IR2_H_
#define IR2_H_

#include <stdint.h>
#include <stdbool.h>

#include "instr-a2xx.h"

/* low level intermediate representation of an adreno a2xx shader program */

struct ir2_shader;

#define REG_MASK 0xff

struct ir2_shader_info {
	uint16_t sizedwords;
	int8_t   max_reg;   /* highest GPR # used by shader */
};

struct ir2_register {
	int16_t write_idx, write_idx2, read_idx, reg;
	/* bitmask of variables on which this one depends
	 * XXX: use bitmask util?
	 */
	uint32_t regmask[REG_MASK/32+1];
};

struct ir2_src_register {
	enum {
		IR2_REG_INPUT  = 0x1,
		IR2_REG_CONST  = 0x2,
		IR2_REG_NEGATE = 0x4,
		IR2_REG_ABS    = 0x8,
	} flags;
	int num;
	char *swizzle;
};

struct ir2_dst_register {
	enum {
		IR2_REG_EXPORT = 0x1,
	} flags;
	int num;
	char *swizzle;
};

enum ir2_pred {
	IR2_PRED_NONE = 0,
	IR2_PRED_EQ = 1,
	IR2_PRED_NE = 2,
};

struct ir2_instruction {
	struct ir2_shader *shader;
	unsigned idx;
	enum {
		IR2_FETCH,
		IR2_ALU_VECTOR,
		IR2_ALU_SCALAR,
	} instr_type;
	enum ir2_pred pred;
	int sync;
	unsigned src_reg_count;
	struct ir2_dst_register dst_reg;
	struct ir2_src_register src_reg[3];
	union {
		/* FETCH specific: */
		struct {
			instr_fetch_opc_t opc;
			unsigned const_idx;
			/* texture fetch specific: */
			bool is_cube : 1;
			bool is_rect : 1;
			/* vertex fetch specific: */
			unsigned const_idx_sel;
			enum a2xx_sq_surfaceformat fmt;
			bool is_signed : 1;
			bool is_normalized : 1;
			uint32_t stride;
			uint32_t offset;
		} fetch;
		/* ALU-Vector specific: */
		struct {
			instr_vector_opc_t opc;
			bool clamp;
		} alu_vector;
		/* ALU-Scalar specific: */
		struct {
			instr_scalar_opc_t opc;
			bool clamp;
		} alu_scalar;
	};
};

struct ir2_shader {
	unsigned instr_count;
	int max_reg;
	struct ir2_register reg[REG_MASK+1];

	struct ir2_instruction *instr[0x200];
	uint32_t heap[100 * 4096];
	unsigned heap_idx;

	enum ir2_pred pred;  /* pred inherited by newly created instrs */
};

struct ir2_shader * ir2_shader_create(void);
void ir2_shader_destroy(struct ir2_shader *shader);
void * ir2_shader_assemble(struct ir2_shader *shader,
		struct ir2_shader_info *info);

struct ir2_instruction * ir2_instr_create(struct ir2_shader *shader,
		int instr_type);

struct ir2_dst_register * ir2_dst_create(struct ir2_instruction *instr,
		int num, const char *swizzle, int flags);
struct ir2_src_register * ir2_reg_create(struct ir2_instruction *instr,
		int num, const char *swizzle, int flags);

/* some helper fxns: */

static inline struct ir2_instruction *
ir2_instr_create_alu_v(struct ir2_shader *shader, instr_vector_opc_t vop)
{
	struct ir2_instruction *instr = ir2_instr_create(shader, IR2_ALU_VECTOR);
	if (!instr)
		return instr;
	instr->alu_vector.opc = vop;
	return instr;
}

static inline struct ir2_instruction *
ir2_instr_create_alu_s(struct ir2_shader *shader, instr_scalar_opc_t sop)
{
	struct ir2_instruction *instr = ir2_instr_create(shader, IR2_ALU_SCALAR);
	if (!instr)
		return instr;
	instr->alu_scalar.opc = sop;
	return instr;
}

static inline struct ir2_instruction *
ir2_instr_create_vtx_fetch(struct ir2_shader *shader, int ci, int cis,
		enum a2xx_sq_surfaceformat fmt, bool is_signed, int stride)
{
	struct ir2_instruction *instr = ir2_instr_create(shader, IR2_FETCH);
	instr->fetch.opc = VTX_FETCH;
	instr->fetch.const_idx = ci;
	instr->fetch.const_idx_sel = cis;
	instr->fetch.fmt = fmt;
	instr->fetch.is_signed = is_signed;
	instr->fetch.stride = stride;
	return instr;
}
static inline struct ir2_instruction *
ir2_instr_create_tex_fetch(struct ir2_shader *shader, int ci)
{
	struct ir2_instruction *instr = ir2_instr_create(shader, IR2_FETCH);
	instr->fetch.opc = TEX_FETCH;
	instr->fetch.const_idx = ci;
	return instr;
}


#endif /* IR2_H_ */