| /* |
| * Copyright (C) 2019 Connor Abbott <cwabbott0@gmail.com> |
| * Copyright (C) 2019 Lyude Paul <thatslyude@gmail.com> |
| * Copyright (C) 2019 Ryan Houdek <Sonicadvance1@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 __bifrost_h__ |
| #define __bifrost_h__ |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| |
| #define BIFROST_DBG_MSGS 0x0001 |
| #define BIFROST_DBG_SHADERS 0x0002 |
| |
| extern int bifrost_debug; |
| |
| enum bifrost_clause_type { |
| BIFROST_CLAUSE_NONE = 0, |
| BIFROST_CLAUSE_LOAD_VARY = 1, |
| BIFROST_CLAUSE_UBO = 2, |
| BIFROST_CLAUSE_TEX = 3, |
| BIFROST_CLAUSE_SSBO_LOAD = 5, |
| BIFROST_CLAUSE_SSBO_STORE = 6, |
| BIFROST_CLAUSE_BLEND = 9, |
| BIFROST_CLAUSE_FRAGZ = 12, |
| BIFROST_CLAUSE_ATEST = 13, |
| BIFROST_CLAUSE_64BIT = 15 |
| }; |
| |
| struct bifrost_header { |
| unsigned unk0 : 7; |
| // If true, convert any infinite result of any floating-point operation to |
| // the biggest representable number. |
| unsigned suppress_inf: 1; |
| // Convert any NaN results to 0. |
| unsigned suppress_nan : 1; |
| unsigned unk1 : 2; |
| // true if the execution mask of the next clause is the same as the mask of |
| // the current clause. |
| unsigned back_to_back : 1; |
| unsigned no_end_of_shader: 1; |
| unsigned unk2 : 2; |
| // Set to true for fragment shaders, to implement this bit of spec text |
| // from section 7.1.5 of the GLSL ES spec: |
| // |
| // "Stores to image and buffer variables performed by helper invocations |
| // have no effect on the underlying image or buffer memory." |
| // |
| // Helper invocations are threads (invocations) corresponding to pixels in |
| // a quad that aren't actually part of the triangle, but are included to |
| // make derivatives work correctly. They're usually turned on, but they |
| // need to be masked off for GLSL-level stores. This bit seems to be the |
| // only bit that's actually different between fragment shaders and other |
| // shaders, so this is probably what it's doing. |
| unsigned elide_writes : 1; |
| // If backToBack is off: |
| // - true for conditional branches and fallthrough |
| // - false for unconditional branches |
| // The blob seems to always set it to true if back-to-back is on. |
| unsigned branch_cond : 1; |
| // This bit is set when the next clause writes to the data register of some |
| // previous clause. |
| unsigned datareg_writebarrier: 1; |
| unsigned datareg : 6; |
| unsigned scoreboard_deps: 8; |
| unsigned scoreboard_index: 3; |
| enum bifrost_clause_type clause_type: 4; |
| unsigned unk3 : 1; // part of clauseType? |
| enum bifrost_clause_type next_clause_type: 4; |
| unsigned unk4 : 1; // part of nextClauseType? |
| } __attribute__((packed)); |
| |
| enum bifrost_packed_src { |
| BIFROST_SRC_PORT0 = 0, |
| BIFROST_SRC_PORT1 = 1, |
| BIFROST_SRC_PORT3 = 2, |
| BIFROST_SRC_STAGE = 3, |
| BIFROST_SRC_CONST_LO = 4, |
| BIFROST_SRC_CONST_HI = 5, |
| BIFROST_SRC_PASS_FMA = 6, |
| BIFROST_SRC_PASS_ADD = 7, |
| }; |
| |
| #define BIFROST_FMA_EXT (0xe0000) |
| #define BIFROST_FMA_OP_MOV BIFROST_FMA_EXT | (0x32d) |
| #define BIFROST_FMA_OP_FREXPE_LOG BIFROST_FMA_EXT | 0x3c5 |
| #define BIFROST_FMA_OP_ADD_FREXPM ((BIFROST_FMA_EXT | 0x1e80) >> 3) |
| #define BIFROST_FMA_SEL_16(swiz) (((BIFROST_FMA_EXT | 0x1e00) >> 3) | (swiz)) |
| |
| #define BIFROST_FMA_ROUND_16(mode, swiz) (BIFROST_FMA_EXT | 0x1800 | (swiz) | ((mode) << 6)) |
| #define BIFROST_FMA_ROUND_32(mode) (BIFROST_FMA_EXT | 0x1805 | ((mode) << 6)) |
| |
| struct bifrost_fma_inst { |
| unsigned src0 : 3; |
| unsigned op : 20; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_IADD_32 (0x4ff98 >> 3) |
| #define BIFROST_FMA_ISUB_32 (0x4ffd8 >> 3) |
| |
| struct bifrost_fma_2src { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned op : 17; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_SEL8 (0x71) |
| |
| struct bifrost_fma_sel8 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned src3 : 3; |
| unsigned swizzle : 4; |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_MSCALE (0x50 >> 3) |
| |
| struct bifrost_fma_mscale { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned src3 : 3; |
| |
| /* If mscale_mode is set - an MSCALE specific mode. If it is not set, a |
| * regular outmod */ |
| unsigned mode : 2; |
| unsigned mscale_mode : 1; |
| |
| unsigned src0_abs : 1; |
| unsigned src1_neg : 1; |
| unsigned src2_neg : 1; |
| unsigned op : 5; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_BLEND (0x1952c) |
| #define BIFROST_ADD_OP_FRCP_FAST_F32 (0x0cc00) |
| #define BIFROST_ADD_OP_FRCP_FAST_F16_X (0x0ce10) |
| #define BIFROST_ADD_OP_FRCP_FAST_F16_Y (0x0ce30) |
| #define BIFROST_ADD_OP_FRSQ_FAST_F32 (0x0cc20) |
| #define BIFROST_ADD_OP_FRSQ_FAST_F16_X (0x0ce50) |
| #define BIFROST_ADD_OP_FRSQ_FAST_F16_Y (0x0ce70) |
| #define BIFROST_ADD_OP_LOG2_HELP (0x0cc68) |
| #define BIFROST_ADD_OP_FEXP2_FAST (0x0cd58) |
| |
| struct bifrost_add_inst { |
| unsigned src0 : 3; |
| unsigned op : 17; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_DISCARD (0x19100 >> 8) |
| |
| enum bifrost_discard_cond { |
| BIFROST_DISCARD_FEQ = 0, |
| BIFROST_DISCARD_FNE = 1, |
| BIFROST_DISCARD_FLE = 2, |
| BIFROST_DISCARD_FLT = 3, |
| }; |
| |
| struct bifrost_add_discard { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| enum bifrost_discard_cond cond : 2; |
| /* Zero for fp32 */ |
| unsigned src0_select : 1; |
| unsigned src1_select : 1; |
| unsigned fp32 : 1; |
| unsigned op : 9; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_LD_UBO_1 (0x0c1a0 >> 3) |
| #define BIFROST_ADD_OP_LD_UBO_2 (0x0c1e0 >> 3) |
| #define BIFROST_ADD_OP_LD_UBO_3 (0x0caa0 >> 3) |
| #define BIFROST_ADD_OP_LD_UBO_4 (0x0c220 >> 3) |
| #define BIFROST_ADD_SEL_16(swiz) ((0xea60 >> 3) | (swiz)) |
| |
| #define BIFROST_ADD_IADD_8 (0x17880 >> 3) |
| #define BIFROST_ADD_IADD_16 (0x17900 >> 3) |
| #define BIFROST_ADD_IADD_32 (0x178c0 >> 3) |
| #define BIFROST_ADD_ISUB_8 (0x17a80 >> 3) |
| #define BIFROST_ADD_ISUB_16 (0x17b00 >> 3) |
| #define BIFROST_ADD_ISUB_32 (0x17ac0 >> 3) |
| |
| struct bifrost_add_2src { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned op : 14; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_FMAX32 (0x00) |
| #define BIFROST_ADD_OP_FMIN32 (0x01) |
| #define BIFROST_ADD_OP_FADD32 (0x02) |
| |
| #define BIFROST_ADD_OP_FADD16 (0x0A) |
| |
| struct bifrost_add_faddmin { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src1_abs : 1; |
| unsigned src0_neg : 1; |
| unsigned src1_neg : 1; |
| unsigned select : 2; /* swizzle_0 for fp16 */ |
| unsigned outmod : 2; /* swizzle_1 for fp16 */ |
| unsigned mode : 2; |
| unsigned src0_abs : 1; |
| unsigned op : 4; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_FMAX16 (0x10) |
| #define BIFROST_ADD_OP_FMIN16 (0x12) |
| |
| struct bifrost_add_fmin16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| /* abs2 inferred as with FMA */ |
| unsigned abs1 : 1; |
| unsigned src0_neg : 1; |
| unsigned src1_neg : 1; |
| unsigned src0_swizzle : 2; |
| unsigned src1_swizzle : 2; |
| unsigned mode : 2; |
| unsigned op : 5; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_ST_VAR (0x19300 >> 8) |
| |
| struct bifrost_st_vary { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned channels : 2; |
| unsigned op : 9; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_ATEST (0xc8f) |
| |
| struct bifrost_add_atest { |
| /* gl_SampleMask (R60) */ |
| unsigned src0 : 3; |
| |
| /* Alpha value */ |
| unsigned src1 : 3; |
| |
| /* If half, X/Y select. If !half, always set */ |
| unsigned component : 1; |
| unsigned half : 1; |
| |
| unsigned op : 12; |
| } __attribute__((packed)); |
| |
| enum bifrost_outmod { |
| BIFROST_NONE = 0x0, |
| BIFROST_POS = 0x1, |
| BIFROST_SAT_SIGNED = 0x2, |
| BIFROST_SAT = 0x3, |
| }; |
| |
| enum bifrost_roundmode { |
| BIFROST_RTE = 0x0, /* round to even */ |
| BIFROST_RTP = 0x1, /* round to positive */ |
| BIFROST_RTN = 0x2, /* round to negative */ |
| BIFROST_RTZ = 0x3 /* round to zero */ |
| }; |
| |
| /* NONE: Same as fmax() and fmin() -- return the other |
| * number if any number is NaN. Also always return +0 if |
| * one argument is +0 and the other is -0. |
| * |
| * NAN_WINS: Instead of never returning a NaN, always return |
| * one. The "greater"/"lesser" NaN is always returned, first |
| * by checking the sign and then the mantissa bits. |
| * |
| * SRC1_WINS: For max, implement src0 > src1 ? src0 : src1. |
| * For min, implement src0 < src1 ? src0 : src1. This |
| * includes handling NaN's and signedness of 0 differently |
| * from above, since +0 and -0 compare equal and comparisons |
| * always return false for NaN's. As a result, this mode is |
| * *not* commutative. |
| * |
| * SRC0_WINS: For max, implement src0 < src1 ? src1 : src0 |
| * For min, implement src0 > src1 ? src1 : src0 |
| */ |
| |
| |
| enum bifrost_minmax_mode { |
| BIFROST_MINMAX_NONE = 0x0, |
| BIFROST_NAN_WINS = 0x1, |
| BIFROST_SRC1_WINS = 0x2, |
| BIFROST_SRC0_WINS = 0x3, |
| }; |
| |
| #define BIFROST_FMA_OP_FADD32 (0x58 >> 2) |
| #define BIFROST_FMA_OP_FMAX32 (0x40 >> 2) |
| #define BIFROST_FMA_OP_FMIN32 (0x44 >> 2) |
| |
| struct bifrost_fma_add { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src1_abs : 1; |
| unsigned src0_neg : 1; |
| unsigned src1_neg : 1; |
| unsigned unk : 3; |
| unsigned src0_abs : 1; |
| enum bifrost_roundmode roundmode : 2; |
| enum bifrost_outmod outmod : 2; |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_FMAX16 (0xC0 >> 2) |
| #define BIFROST_FMA_OP_FMIN16 (0xCC >> 2) |
| #define BIFROST_FMA_OP_FADD16 (0xD8 >> 2) |
| |
| struct bifrost_fma_add_minmax16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| /* abs2 inferred as (src1 < src0) */ |
| unsigned abs1 : 1; |
| unsigned src0_neg : 1; |
| unsigned src1_neg : 1; |
| unsigned src0_swizzle : 2; |
| unsigned src1_swizzle : 2; |
| unsigned mode : 2; |
| enum bifrost_outmod outmod : 2; |
| /* roundmode for add, min/max mode for min/max */ |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_FMA (0x00) |
| |
| struct bifrost_fma_fma { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned src_expand : 3; |
| unsigned src0_abs : 1; |
| enum bifrost_roundmode roundmode : 2; |
| enum bifrost_outmod outmod : 2; |
| unsigned src0_neg : 1; /* 14 */ |
| unsigned src2_neg : 1; |
| unsigned src1_abs : 1; |
| unsigned src2_abs : 1; /* 17 */ |
| unsigned op : 2; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_FMA16 (0x2) |
| |
| struct bifrost_fma_fma16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned swizzle_0 : 2; |
| unsigned swizzle_1 : 2; |
| enum bifrost_roundmode roundmode : 2; |
| enum bifrost_outmod outmod : 2; |
| unsigned src0_neg : 1; |
| unsigned src2_neg : 1; |
| unsigned swizzle_2 : 2; |
| unsigned op : 2; |
| } __attribute__((packed)); |
| |
| enum bifrost_csel_cond { |
| BIFROST_FEQ_F = 0x0, |
| BIFROST_FGT_F = 0x1, |
| BIFROST_FGE_F = 0x2, |
| BIFROST_IEQ_F = 0x3, |
| BIFROST_IGT_I = 0x4, |
| BIFROST_IGE_I = 0x5, |
| BIFROST_UGT_I = 0x6, |
| BIFROST_UGE_I = 0x7 |
| }; |
| |
| #define BIFROST_FMA_OP_CSEL4 (0x5c) |
| #define BIFROST_FMA_OP_CSEL4_V16 (0xdc) |
| |
| struct bifrost_csel4 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned src3 : 3; |
| enum bifrost_csel_cond cond : 3; |
| unsigned op : 8; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMA_OP_RSHIFT_NAND (0x60000 >> 12) |
| #define BIFROST_FMA_OP_RSHIFT_AND (0x61000 >> 12) |
| #define BIFROST_FMA_OP_LSHIFT_NAND (0x62000 >> 12) |
| #define BIFROST_FMA_OP_LSHIFT_AND (0x63000 >> 12) |
| #define BIFROST_FMA_OP_RSHIFT_XOR (0x64000 >> 12) |
| #define BIFROST_FMA_OP_LSHIFT_ADD_32 (0x65200 >> 6) |
| #define BIFROST_FMA_OP_LSHIFT_SUB_32 (0x65600 >> 6) |
| #define BIFROST_FMA_OP_LSHIFT_RSUB_32 (0x65a00 >> 6) |
| #define BIFROST_FMA_OP_RSHIFT_ADD_32 (0x65e00 >> 6) |
| #define BIFROST_FMA_OP_RSHIFT_SUB_32 (0x66200 >> 6) |
| #define BIFROST_FMA_OP_RSHIFT_RSUB_32 (0x66600 >> 6) |
| |
| struct bifrost_shift_fma { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned half : 3; |
| unsigned unk : 1; /* always set? */ |
| unsigned invert_1 : 1; /* Inverts sources to combining op */ |
| /* For XOR, switches RSHIFT to LSHIFT since only one invert needed */ |
| unsigned invert_2 : 1; |
| unsigned op : 8; |
| } __attribute__((packed)); |
| |
| struct bifrost_shift_add { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src2 : 3; |
| unsigned zero : 2; |
| |
| unsigned invert_1 : 1; |
| unsigned invert_2 : 1; |
| |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| enum bifrost_fcmp_cond { |
| BIFROST_OEQ = 0, |
| BIFROST_OGT = 1, |
| BIFROST_OGE = 2, |
| BIFROST_UNE = 3, |
| BIFROST_OLT = 4, |
| BIFROST_OLE = 5, |
| }; |
| |
| /* "gl" version produces 0/1. "d3d" version produces 0/~0 */ |
| #define BIFROST_FMA_OP_FCMP_GL (0x48000 >> 13) |
| #define BIFROST_FMA_OP_FCMP_D3D (0x4c000 >> 13) |
| |
| struct bifrost_fma_fcmp { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src1_abs : 1; |
| unsigned unk1 : 1; |
| unsigned src1_neg : 1; |
| unsigned src_expand : 3; |
| unsigned src0_abs : 1; |
| enum bifrost_fcmp_cond cond : 3; |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| struct bifrost_add_fcmp { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| enum bifrost_fcmp_cond cond : 3; |
| unsigned src_expand : 2; |
| unsigned src0_abs : 1; |
| unsigned src1_abs : 1; |
| unsigned src1_neg : 1; |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| /* "gl" version produces 0/1. "d3d" version produces 0/~0 */ |
| #define BIFROST_FMA_OP_FCMP_GL_16 (0xc8000 >> 13) |
| #define BIFROST_FMA_OP_FCMP_D3D_16 (0xcc000 >> 13) |
| |
| struct bifrost_fma_fcmp16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| |
| /* abs2 inferred */ |
| unsigned abs1 : 1; |
| unsigned unk : 2; |
| |
| unsigned src0_swizzle : 2; |
| unsigned src1_swizzle : 2; |
| |
| enum bifrost_fcmp_cond cond : 3; |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| struct bifrost_add_fcmp16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| enum bifrost_fcmp_cond cond : 3; |
| |
| unsigned src0_swizzle : 2; |
| unsigned src1_swizzle : 2; |
| |
| /* No abs mods */ |
| unsigned src0_neg : 1; |
| |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| enum bifrost_icmp_cond { |
| BIFROST_ICMP_IGT = 0, |
| BIFROST_ICMP_IGE = 1, /* swapped for 16-bit */ |
| BIFROST_ICMP_UGT = 2, /* swapped for 16-bit */ |
| BIFROST_ICMP_UGE = 3, |
| BIFROST_ICMP_EQ = 4, |
| BIFROST_ICMP_NEQ = 5, |
| BIFROST_ICMP_32_OR_8 = 6, /* nested */ |
| BIFROST_ICMP_64 = 7, /* nested */ |
| }; |
| |
| struct bifrost_fma_icmp32 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| enum bifrost_icmp_cond cond : 3; |
| unsigned unk1 : 1; /* set */ |
| unsigned d3d : 1; /* if set, true is ~0. otherwise, true is 1 */ |
| unsigned op : 12; |
| } __attribute__((packed)); |
| |
| struct bifrost_fma_icmp16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned unk : 5; /* 11010 */ |
| enum bifrost_icmp_cond cond : 3; |
| unsigned op : 9; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_ICMP_32 (0x0f600 >> 8) |
| #define BIFROST_ADD_OP_ICMP_16 (0x0f000 >> 11) |
| |
| struct bifrost_add_icmp { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| enum bifrost_icmp_cond cond : 3; |
| unsigned sz : 1; /* 1 for 32, 0 for 8 */ |
| unsigned d3d : 1; /* if set, true is ~0. otherwise, true is 1 */ |
| unsigned op : 9; |
| } __attribute__((packed)); |
| |
| struct bifrost_add_icmp16 { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned src0_swizzle : 2; |
| unsigned src1_swizzle : 2; |
| unsigned d3d : 1; /* if set, true is ~0. otherwise, true is 1 */ |
| enum bifrost_icmp_cond cond : 3; |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| /* Two sources for vectorization */ |
| #define BIFROST_FMA_FLOAT32_TO_16 (0xdd000 >> 3) |
| #define BIFROST_ADD_FLOAT32_TO_16 (0x0EC00 >> 3) |
| |
| enum bifrost_convert_mode { |
| BIFROST_CONV_UNK0 = 0, |
| BIFROST_CONV_F32_TO_I32 = 1, |
| BIFROST_CONV_F16_TO_I16 = 2, |
| BIFROST_CONV_I32_TO_F32 = 3, |
| BIFROST_CONV_I16_TO_X32 = 4, |
| BIFROST_CONV_F16_TO_F32 = 5, |
| BIFROST_CONV_I16_TO_F16 = 6, |
| BIFROST_CONV_UNK7 = 7 |
| }; |
| |
| /* i16 to x32 */ |
| #define BIFROST_CONVERT_4(is_unsigned, component, to_float) \ |
| ((is_unsigned & 1) | ((component & 1) << 1) | ((to_float & 1) << 2) | \ |
| ((0x3) << 3) | ((4) << 5) | 0x100) |
| |
| /* f16 to f32 */ |
| #define BIFROST_CONVERT_5(component) \ |
| ((component & 1) | ((1) << 1) | ((5) << 5) | 0x100) |
| |
| /* Other conversions */ |
| #define BIFROST_CONVERT(is_unsigned, roundmode, swizzle, mode) \ |
| ((is_unsigned & 1) | ((roundmode & 3) << 1) | ((swizzle & 3) << 3) | ((mode & 7) << 5)) |
| |
| #define BIFROST_FMA_CONVERT (0xe0000) |
| #define BIFROST_ADD_CONVERT (0x07800) |
| |
| enum bifrost_ldst_type { |
| BIFROST_LDST_F16 = 0, |
| BIFROST_LDST_F32 = 1, |
| BIFROST_LDST_I32 = 2, |
| BIFROST_LDST_U32 = 3 |
| }; |
| |
| #define BIFROST_ADD_OP_LD_VAR_ADDR (0x18000 >> 10) |
| |
| struct bifrost_ld_var_addr { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned location : 5; |
| enum bifrost_ldst_type type : 2; |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_LD_ATTR (0x08000 >> 12) |
| |
| struct bifrost_ld_attr { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned location : 5; |
| unsigned channels : 2; /* MALI_POSITIVE */ |
| enum bifrost_ldst_type type : 2; |
| unsigned op : 5; |
| } __attribute__((packed)); |
| |
| enum bifrost_interp_mode { |
| BIFROST_INTERP_PER_FRAG = 0x0, |
| BIFROST_INTERP_CENTROID = 0x1, |
| BIFROST_INTERP_DEFAULT = 0x2, |
| BIFROST_INTERP_EXPLICIT = 0x3 |
| }; |
| |
| #define BIFROST_ADD_OP_LD_VAR_16 (0x1a << 1) |
| #define BIFROST_ADD_OP_LD_VAR_32 (0x0a << 1) |
| |
| /* Fixed location for gl_FragCoord.zw */ |
| #define BIFROST_FRAGZ (23) |
| #define BIFROST_FRAGW (22) |
| |
| struct bifrost_ld_var { |
| unsigned src0 : 3; |
| |
| /* If top two bits set, indirect with src in bottom three */ |
| unsigned addr : 5; |
| |
| unsigned channels : 2; /* MALI_POSITIVE */ |
| enum bifrost_interp_mode interp_mode : 2; |
| unsigned reuse : 1; |
| unsigned flat : 1; |
| unsigned op : 6; |
| } __attribute__((packed)); |
| |
| struct bifrost_tex_ctrl { |
| unsigned sampler_index : 4; // also used to signal indirects |
| unsigned tex_index : 7; |
| bool no_merge_index : 1; // whether to merge (direct) sampler & texture indices |
| bool filter : 1; // use the usual filtering pipeline (0 for texelFetch & textureGather) |
| unsigned unk0 : 2; |
| bool texel_offset : 1; // *Offset() |
| bool is_shadow : 1; |
| bool is_array : 1; |
| unsigned tex_type : 2; // 2D, 3D, Cube, Buffer |
| bool compute_lod : 1; // 0 for *Lod() |
| bool not_supply_lod : 1; // 0 for *Lod() or when a bias is applied |
| bool calc_gradients : 1; // 0 for *Grad() |
| unsigned unk1 : 1; |
| unsigned result_type : 4; // integer, unsigned, float TODO: why is this 4 bits? |
| unsigned unk2 : 4; |
| } __attribute__((packed)); |
| |
| struct bifrost_dual_tex_ctrl { |
| unsigned sampler_index0 : 2; |
| unsigned unk0 : 2; |
| unsigned tex_index0 : 2; |
| unsigned sampler_index1 : 2; |
| unsigned tex_index1 : 2; |
| unsigned unk1 : 22; |
| } __attribute__((packed)); |
| |
| #define BIFROST_ADD_OP_TEX_COMPACT_F32(vtx) ((0x0b000 | ((vtx) ? (0x400) : (0))) >> 10) |
| #define BIFROST_ADD_OP_TEX_COMPACT_F16(vtx) ((0x1b000 | ((vtx) ? (0x400) : (0))) >> 10) |
| |
| struct bifrost_tex_compact { |
| unsigned src0 : 3; |
| unsigned src1 : 3; |
| unsigned tex_index : 3; |
| unsigned compute_lod : 1; |
| unsigned sampler_index : 3; |
| unsigned op : 7; |
| } __attribute__((packed)); |
| |
| enum branch_bit_size { |
| BR_SIZE_32 = 0, |
| BR_SIZE_16XX = 1, |
| BR_SIZE_16YY = 2, |
| // For the above combinations of bitsize and location, an extra bit is |
| // encoded via comparing the sources. The only possible source of ambiguity |
| // would be if the sources were the same, but then the branch condition |
| // would be always true or always false anyways, so we can ignore it. But |
| // this no longer works when comparing the y component to the x component, |
| // since it's valid to compare the y component of a source against its own |
| // x component. Instead, the extra bit is encoded via an extra bitsize. |
| BR_SIZE_16YX0 = 3, |
| BR_SIZE_16YX1 = 4, |
| BR_SIZE_32_AND_16X = 5, |
| BR_SIZE_32_AND_16Y = 6, |
| // Used for comparisons with zero and always-true, see below. I think this |
| // only works for integer comparisons. |
| BR_SIZE_ZERO = 7, |
| }; |
| |
| enum bifrost_reg_write_unit { |
| REG_WRITE_NONE = 0, // don't write |
| REG_WRITE_TWO, // write using reg2 |
| REG_WRITE_THREE, // write using reg3 |
| }; |
| |
| struct bifrost_regs { |
| unsigned uniform_const : 8; |
| unsigned reg2 : 6; |
| unsigned reg3 : 6; |
| unsigned reg0 : 5; |
| unsigned reg1 : 6; |
| unsigned ctrl : 4; |
| } __attribute__((packed)); |
| |
| enum bifrost_branch_cond { |
| BR_COND_LT = 0, |
| BR_COND_LE = 1, |
| BR_COND_GE = 2, |
| BR_COND_GT = 3, |
| // Equal vs. not-equal determined by src0/src1 comparison |
| BR_COND_EQ = 4, |
| // floating-point comparisons |
| // Becomes UNE when you flip the arguments |
| BR_COND_OEQ = 5, |
| // TODO what happens when you flip the arguments? |
| BR_COND_OGT = 6, |
| BR_COND_OLT = 7, |
| }; |
| |
| enum bifrost_branch_code { |
| BR_ALWAYS = 63, |
| }; |
| |
| #define BIFROST_ADD_OP_BRANCH (0x0d000 >> 12) |
| |
| struct bifrost_branch { |
| unsigned src0 : 3; |
| |
| /* For BR_SIZE_ZERO, upper two bits become ctrl */ |
| unsigned src1 : 3; |
| |
| /* Offset source -- always uniform/const but |
| * theoretically could support indirect jumps? */ |
| unsigned src2 : 3; |
| |
| enum bifrost_branch_cond cond : 3; |
| enum branch_bit_size size : 3; |
| |
| unsigned op : 5; |
| }; |
| |
| /* Clause packing */ |
| |
| #define BIFROST_FMA_NOP (0x701960 | BIFROST_SRC_STAGE) |
| #define BIFROST_ADD_NOP (0x3D960 | BIFROST_SRC_STAGE) |
| |
| struct bifrost_fmt1 { |
| unsigned ins_0 : 3; |
| unsigned tag : 5; |
| uint64_t ins_1 : 64; |
| unsigned ins_2 : 11; |
| uint64_t header : 45; |
| } __attribute__((packed)); |
| |
| #define BIFROST_FMT1_INSTRUCTIONS 0b00101 |
| #define BIFROST_FMT1_FINAL 0b01001 |
| #define BIFROST_FMT1_CONSTANTS 0b00001 |
| |
| #define BIFROST_FMTC_CONSTANTS 0b0011 |
| #define BIFROST_FMTC_FINAL 0b0111 |
| |
| struct bifrost_fmt_constant { |
| unsigned pos : 4; |
| unsigned tag : 4; |
| uint64_t imm_1 : 60; |
| uint64_t imm_2 : 60; |
| } __attribute__((packed)); |
| |
| enum bifrost_reg_control { |
| BIFROST_WRITE_FMA_P2 = 1, |
| BIFROST_WRITE_FMA_P2_READ_P3 = 2, |
| BIFROST_FIRST_WRITE_FMA_P2_READ_P3 = 3, |
| BIFROST_READ_P3 = 4, |
| BIFROST_WRITE_ADD_P2 = 5, |
| BIFROST_WRITE_ADD_P2_READ_P3 = 6, |
| BIFROST_WRITE_ADD_P2_FMA_P3 = 7, |
| |
| BIFROST_FIRST_NONE = 8, |
| BIFROST_FIRST_WRITE_FMA_P2 = 9, |
| /* INSTR_INVALID_ENC */ |
| BIFROST_REG_NONE = 11, |
| BIFROST_FIRST_READ_P3 = 12, |
| BIFROST_FIRST_WRITE_ADD_P2 = 13, |
| BIFROST_FIRST_WRITE_ADD_P2_READ_P3 = 14, |
| BIFROST_FIRST_WRITE_ADD_P2_FMA_P3 = 15 |
| }; |
| |
| #endif |
