src/gallium/drivers/panfrost/midgard/midgard.h

   1 /* Author(s):
   2  *   Connor Abbott
   3  *   Alyssa Rosenzweig
   4  *
   5  * Copyright (c) 2013 Connor Abbott (connor@abbott.cx)
   6  * Copyright (c) 2018 Alyssa Rosenzweig (alyssa@rosenzweig.io)
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24  * THE SOFTWARE.
  25  */
  26
  27 #ifndef __midgard_h__
  28 #define __midgard_h__
  29
  30 #include <stdint.h>
  31 #include <stdbool.h>
  32
  33 #define MIDGARD_DBG_MSGS                0x0001
  34 #define MIDGARD_DBG_SHADERS             0x0002
  35
  36 extern int midgard_debug;
  37
  38 typedef enum {
  39         midgard_word_type_alu,
  40         midgard_word_type_load_store,
  41         midgard_word_type_texture,
  42         midgard_word_type_unknown
  43 } midgard_word_type;
  44
  45 typedef enum {
  46         midgard_alu_vmul,
  47         midgard_alu_sadd,
  48         midgard_alu_smul,
  49         midgard_alu_vadd,
  50         midgard_alu_lut
  51 } midgard_alu;
  52
  53 /*
  54  * ALU words
  55  */
  56
  57 typedef enum {
  58         midgard_alu_op_fadd       = 0x10,
  59         midgard_alu_op_fmul       = 0x14,
  60         midgard_alu_op_fmin       = 0x28,
  61         midgard_alu_op_fmax       = 0x2C,
  62         midgard_alu_op_fmov       = 0x30,
  63         midgard_alu_op_froundeven = 0x34,
  64         midgard_alu_op_ftrunc     = 0x35,
  65         midgard_alu_op_ffloor     = 0x36,
  66         midgard_alu_op_fceil      = 0x37,
  67         midgard_alu_op_ffma       = 0x38,
  68         midgard_alu_op_fdot3      = 0x3C,
  69         midgard_alu_op_fdot3r     = 0x3D,
  70         midgard_alu_op_fdot4      = 0x3E,
  71         midgard_alu_op_freduce    = 0x3F,
  72         midgard_alu_op_iadd       = 0x40,
  73         midgard_alu_op_ishladd    = 0x41,
  74         midgard_alu_op_isub       = 0x46,
  75         midgard_alu_op_imul       = 0x58,
  76         midgard_alu_op_imin       = 0x60,
  77         midgard_alu_op_imax       = 0x62,
  78         midgard_alu_op_iasr       = 0x68,
  79         midgard_alu_op_ilsr       = 0x69,
  80         midgard_alu_op_ishl       = 0x6E,
  81         midgard_alu_op_iand       = 0x70,
  82         midgard_alu_op_ior        = 0x71,
  83         midgard_alu_op_inot       = 0x72,
  84         midgard_alu_op_iandnot    = 0x74, /* (a, b) -> a & ~b, used for not/b2f */
  85         midgard_alu_op_ixor       = 0x76,
  86         midgard_alu_op_imov       = 0x7B,
  87         midgard_alu_op_iabs       = 0x7C,
  88         midgard_alu_op_feq        = 0x80,
  89         midgard_alu_op_fne        = 0x81,
  90         midgard_alu_op_flt        = 0x82,
  91         midgard_alu_op_fle        = 0x83,
  92         midgard_alu_op_fball_eq   = 0x88,
  93         midgard_alu_op_bball_eq   = 0x89,
  94         midgard_alu_op_fball_lt   = 0x8A, /* all(lessThan(.., ..)) */
  95         midgard_alu_op_fball_lte  = 0x8B, /* all(lessThanEqual(.., ..)) */
  96         midgard_alu_op_bbany_neq  = 0x90, /* used for bvec4(1) */
  97         midgard_alu_op_fbany_neq  = 0x91, /* bvec4(0) also */
  98         midgard_alu_op_fbany_lt   = 0x92, /* any(lessThan(.., ..)) */
  99         midgard_alu_op_fbany_lte  = 0x93, /* any(lessThanEqual(.., ..)) */
 100         midgard_alu_op_f2i        = 0x99,
 101         midgard_alu_op_f2u8       = 0x9C,
 102         midgard_alu_op_f2u        = 0x9D,
 103
 104         midgard_alu_op_ieq        = 0xA0,
 105         midgard_alu_op_ine        = 0xA1,
 106         midgard_alu_op_ilt        = 0xA4,
 107         midgard_alu_op_ile        = 0xA5,
 108         midgard_alu_op_iball_eq   = 0xA8,
 109         midgard_alu_op_ball       = 0xA9,
 110         midgard_alu_op_uball_lt   = 0xAA,
 111         midgard_alu_op_uball_lte  = 0xAB,
 112         midgard_alu_op_iball_lt   = 0xAC,
 113         midgard_alu_op_iball_lte  = 0xAD,
 114         midgard_alu_op_ibany_eq   = 0xB0,
 115         midgard_alu_op_ibany_neq  = 0xB1,
 116         midgard_alu_op_ubany_lt   = 0xB2,
 117         midgard_alu_op_ubany_lte  = 0xB3,
 118         midgard_alu_op_ibany_lt   = 0xB4, /* any(lessThan(.., ..)) */
 119         midgard_alu_op_ibany_lte  = 0xB5, /* any(lessThanEqual(.., ..)) */
 120         midgard_alu_op_i2f        = 0xB8,
 121         midgard_alu_op_u2f        = 0xBC,
 122         midgard_alu_op_icsel      = 0xC1,
 123         midgard_alu_op_fcsel_i    = 0xC4,
 124         midgard_alu_op_fcsel      = 0xC5,
 125         midgard_alu_op_fround     = 0xC6,
 126         midgard_alu_op_fatan_pt2  = 0xE8,
 127         midgard_alu_op_fpow       = 0xEC,
 128         midgard_alu_op_frcp       = 0xF0,
 129         midgard_alu_op_frsqrt     = 0xF2,
 130         midgard_alu_op_fsqrt      = 0xF3,
 131         midgard_alu_op_fexp2      = 0xF4,
 132         midgard_alu_op_flog2      = 0xF5,
 133         midgard_alu_op_fsin       = 0xF6,
 134         midgard_alu_op_fcos       = 0xF7,
 135         midgard_alu_op_fatan2_pt1 = 0xF9,
 136 } midgard_alu_op;
 137
 138 typedef enum {
 139         midgard_outmod_none = 0,
 140         midgard_outmod_pos  = 1,
 141         midgard_outmod_int  = 2,
 142         midgard_outmod_sat  = 3
 143 } midgard_outmod;
 144
 145 typedef enum {
 146         midgard_reg_mode_quarter = 0,
 147         midgard_reg_mode_half = 1,
 148         midgard_reg_mode_full = 2,
 149         midgard_reg_mode_double = 3 /* TODO: verify */
 150 } midgard_reg_mode;
 151
 152 typedef enum {
 153         midgard_dest_override_lower = 0,
 154         midgard_dest_override_upper = 1,
 155         midgard_dest_override_none = 2
 156 } midgard_dest_override;
 157
 158 typedef struct
 159 __attribute__((__packed__))
 160 {
 161         bool abs         : 1;
 162         bool negate      : 1;
 163
 164         /* replicate lower half if dest = half, or low/high half selection if
 165          * dest = full
 166          */
 167         bool rep_low     : 1;
 168         bool rep_high    : 1; /* unused if dest = full */
 169         bool half        : 1; /* only matters if dest = full */
 170         unsigned swizzle : 8;
 171 }
 172 midgard_vector_alu_src;
 173
 174 typedef struct
 175 __attribute__((__packed__))
 176 {
 177         midgard_alu_op op               :  8;
 178         midgard_reg_mode reg_mode   :  2;
 179         unsigned src1 : 13;
 180         unsigned src2 : 13;
 181         midgard_dest_override dest_override : 2;
 182         midgard_outmod outmod               : 2;
 183         unsigned mask                           : 8;
 184 }
 185 midgard_vector_alu;
 186
 187 typedef struct
 188 __attribute__((__packed__))
 189 {
 190         bool abs           : 1;
 191         bool negate        : 1;
 192         bool full          : 1; /* 0 = half, 1 = full */
 193         unsigned component : 3;
 194 }
 195 midgard_scalar_alu_src;
 196
 197 typedef struct
 198 __attribute__((__packed__))
 199 {
 200         midgard_alu_op op         :  8;
 201         unsigned src1             :  6;
 202         unsigned src2             : 11;
 203         unsigned unknown          :  1;
 204         midgard_outmod outmod :  2;
 205         bool output_full          :  1;
 206         unsigned output_component :  3;
 207 }
 208 midgard_scalar_alu;
 209
 210 typedef struct
 211 __attribute__((__packed__))
 212 {
 213         unsigned src1_reg : 5;
 214         unsigned src2_reg : 5;
 215         unsigned out_reg  : 5;
 216         bool src2_imm     : 1;
 217 }
 218 midgard_reg_info;
 219
 220 typedef enum {
 221         midgard_jmp_writeout_op_branch_uncond = 1,
 222         midgard_jmp_writeout_op_branch_cond = 2,
 223         midgard_jmp_writeout_op_discard = 4,
 224         midgard_jmp_writeout_op_writeout = 7,
 225 } midgard_jmp_writeout_op;
 226
 227 typedef enum {
 228         midgard_condition_write0 = 0,
 229         midgard_condition_false = 1,
 230         midgard_condition_true = 2,
 231         midgard_condition_always = 3, /* Special for writeout/uncond discard */
 232 } midgard_condition;
 233
 234 typedef struct
 235 __attribute__((__packed__))
 236 {
 237         midgard_jmp_writeout_op op : 3; /* == branch_uncond */
 238         unsigned dest_tag : 4; /* tag of branch destination */
 239         unsigned unknown : 2;
 240         int offset : 7;
 241 }
 242 midgard_branch_uncond;
 243
 244 typedef struct
 245 __attribute__((__packed__))
 246 {
 247         midgard_jmp_writeout_op op : 3; /* == branch_cond */
 248         unsigned dest_tag : 4; /* tag of branch destination */
 249         int offset : 7;
 250         midgard_condition cond : 2;
 251 }
 252 midgard_branch_cond;
 253
 254 typedef struct
 255 __attribute__((__packed__))
 256 {
 257         midgard_jmp_writeout_op op : 3; /* == branch_cond */
 258         unsigned dest_tag : 4; /* tag of branch destination */
 259         unsigned unknown : 2;
 260         signed offset : 23;
 261         unsigned cond : 16;
 262 }
 263 midgard_branch_extended;
 264
 265 typedef struct
 266 __attribute__((__packed__))
 267 {
 268         midgard_jmp_writeout_op op : 3; /* == writeout */
 269         unsigned unknown : 13;
 270 }
 271 midgard_writeout;
 272
 273 /*
 274  * Load/store words
 275  */
 276
 277 typedef enum {
 278         midgard_op_ld_st_noop   = 0x03,
 279         midgard_op_load_attr_16 = 0x95,
 280         midgard_op_load_attr_32 = 0x94,
 281         midgard_op_load_vary_16 = 0x99,
 282         midgard_op_load_vary_32 = 0x98,
 283         midgard_op_load_color_buffer_16 = 0x9D,
 284         midgard_op_load_color_buffer_8 = 0xBA,
 285         midgard_op_load_uniform_16 = 0xAC,
 286         midgard_op_load_uniform_32 = 0xB0,
 287         midgard_op_store_vary_16 = 0xD5,
 288         midgard_op_store_vary_32 = 0xD4
 289 } midgard_load_store_op;
 290
 291 typedef enum {
 292         midgard_interp_centroid = 1,
 293         midgard_interp_default = 2
 294 } midgard_interpolation;
 295
 296 typedef struct
 297 __attribute__((__packed__))
 298 {
 299         unsigned zero1 : 4; /* Always zero */
 300
 301         /* Varying qualifiers, zero if not a varying */
 302         unsigned flat    : 1;
 303         unsigned is_varying : 1; /* Always one for varying, but maybe something else? */
 304         midgard_interpolation interpolation : 2;
 305
 306         unsigned zero2 : 2; /* Always zero */
 307 }
 308 midgard_varying_parameter;
 309
 310 typedef struct
 311 __attribute__((__packed__))
 312 {
 313         midgard_load_store_op op : 8;
 314         unsigned reg     : 5;
 315         unsigned mask    : 4;
 316         unsigned swizzle : 8;
 317         unsigned unknown : 16;
 318
 319         unsigned varying_parameters : 10;
 320
 321         unsigned address : 9;
 322 }
 323 midgard_load_store_word;
 324
 325 typedef struct
 326 __attribute__((__packed__))
 327 {
 328         unsigned type      : 4;
 329         unsigned next_type : 4;
 330         uint64_t word1     : 60;
 331         uint64_t word2     : 60;
 332 }
 333 midgard_load_store;
 334
 335 /* Texture pipeline results are in r28-r29 */
 336 #define REG_TEX_BASE 28
 337
 338 /* Texture opcodes... maybe? */
 339 #define TEXTURE_OP_NORMAL 0x11
 340 #define TEXTURE_OP_TEXEL_FETCH 0x14
 341
 342 /* Texture format types, found in format */
 343 #define TEXTURE_CUBE 0x00
 344 #define TEXTURE_2D 0x02
 345 #define TEXTURE_3D 0x03
 346
 347 typedef struct
 348 __attribute__((__packed__))
 349 {
 350         unsigned type      : 4;
 351         unsigned next_type : 4;
 352
 353         unsigned op  : 6;
 354         unsigned shadow    : 1;
 355         unsigned unknown3  : 1;
 356
 357         /* A little obscure, but last is set for the last texture operation in
 358          * a shader. cont appears to just be last's opposite (?). Yeah, I know,
 359          * kind of funky.. BiOpen thinks it could do with memory hinting, or
 360          * tile locking? */
 361
 362         unsigned cont  : 1;
 363         unsigned last  : 1;
 364
 365         unsigned format    : 5;
 366         unsigned has_offset : 1;
 367
 368         /* Like in Bifrost */
 369         unsigned filter  : 1;
 370
 371         unsigned in_reg_select : 1;
 372         unsigned in_reg_upper  : 1;
 373
 374         unsigned in_reg_swizzle_left : 2;
 375         unsigned in_reg_swizzle_right : 2;
 376
 377         unsigned unknown1 : 2;
 378
 379         unsigned unknown8  : 4;
 380
 381         unsigned out_full  : 1;
 382
 383         /* Always 1 afaict... */
 384         unsigned unknown7  : 2;
 385
 386         unsigned out_reg_select : 1;
 387         unsigned out_upper : 1;
 388
 389         unsigned mask : 4;
 390
 391         unsigned unknown2  : 2;
 392
 393         unsigned swizzle  : 8;
 394         unsigned unknown4  : 8;
 395
 396         unsigned unknownA  : 4;
 397
 398         unsigned offset_unknown1  : 1;
 399         unsigned offset_reg_select : 1;
 400         unsigned offset_reg_upper : 1;
 401         unsigned offset_unknown4  : 1;
 402         unsigned offset_unknown5  : 1;
 403         unsigned offset_unknown6  : 1;
 404         unsigned offset_unknown7  : 1;
 405         unsigned offset_unknown8  : 1;
 406         unsigned offset_unknown9  : 1;
 407
 408         unsigned unknownB  : 3;
 409
 410         /* Texture bias or LOD, depending on whether it is executed in a
 411          * fragment/vertex shader respectively. Compute as int(2^8 * biasf).
 412          *
 413          * For texel fetch, this is the LOD as is. */
 414         unsigned bias  : 8;
 415
 416         unsigned unknown9  : 8;
 417
 418         unsigned texture_handle : 16;
 419         unsigned sampler_handle : 16;
 420 }
 421 midgard_texture_word;
 422
 423 /* Opcode name table */
 424
 425 static char *alu_opcode_names[256] = {
 426         [midgard_alu_op_fadd]       = "fadd",
 427         [midgard_alu_op_fmul]       = "fmul",
 428         [midgard_alu_op_fmin]       = "fmin",
 429         [midgard_alu_op_fmax]       = "fmax",
 430         [midgard_alu_op_fmov]       = "fmov",
 431         [midgard_alu_op_froundeven] = "froundeven",
 432         [midgard_alu_op_ftrunc]     = "ftrunc",
 433         [midgard_alu_op_ffloor]     = "ffloor",
 434         [midgard_alu_op_fceil]      = "fceil",
 435         [midgard_alu_op_ffma]       = "ffma",
 436         [midgard_alu_op_fdot3]      = "fdot3",
 437         [midgard_alu_op_fdot3r]     = "fdot3r",
 438         [midgard_alu_op_fdot4]      = "fdot4",
 439         [midgard_alu_op_freduce]    = "freduce",
 440         [midgard_alu_op_imin]       = "imin",
 441         [midgard_alu_op_imax]       = "imax",
 442         [midgard_alu_op_ishl]       = "ishl",
 443         [midgard_alu_op_iasr]       = "iasr",
 444         [midgard_alu_op_ilsr]       = "ilsr",
 445         [midgard_alu_op_iadd]       = "iadd",
 446         [midgard_alu_op_ishladd]    = "ishladd",
 447         [midgard_alu_op_isub]       = "isub",
 448         [midgard_alu_op_imul]       = "imul",
 449         [midgard_alu_op_imov]       = "imov",
 450         [midgard_alu_op_iabs]       = "iabs",
 451         [midgard_alu_op_iand]       = "iand",
 452         [midgard_alu_op_ior]        = "ior",
 453         [midgard_alu_op_inot]       = "inot",
 454         [midgard_alu_op_iandnot]    = "iandnot",
 455         [midgard_alu_op_ixor]       = "ixor",
 456         [midgard_alu_op_feq]        = "feq",
 457         [midgard_alu_op_fne]        = "fne",
 458         [midgard_alu_op_flt]        = "flt",
 459         [midgard_alu_op_fle]        = "fle",
 460         [midgard_alu_op_fball_eq]   = "fball_eq",
 461         [midgard_alu_op_fbany_neq]  = "fbany_neq",
 462         [midgard_alu_op_bball_eq]   = "bball_eq",
 463         [midgard_alu_op_fball_lt]   = "fball_lt",
 464         [midgard_alu_op_fball_lte]  = "fball_lte",
 465         [midgard_alu_op_bbany_neq]  = "bbany_neq",
 466         [midgard_alu_op_fbany_lt]   = "fbany_lt",
 467         [midgard_alu_op_fbany_lte]  = "fbany_lte",
 468         [midgard_alu_op_f2i]        = "f2i",
 469         [midgard_alu_op_f2u]        = "f2u",
 470         [midgard_alu_op_f2u8]       = "f2u8",
 471         [midgard_alu_op_ieq]        = "ieq",
 472         [midgard_alu_op_ine]        = "ine",
 473         [midgard_alu_op_ilt]        = "ilt",
 474         [midgard_alu_op_ile]        = "ile",
 475         [midgard_alu_op_iball_eq]   = "iball_eq",
 476         [midgard_alu_op_ball]       = "ball",
 477         [midgard_alu_op_uball_lt]   = "uball_lt",
 478         [midgard_alu_op_uball_lte]  = "uball_lte",
 479         [midgard_alu_op_iball_lt]   = "iball_lt",
 480         [midgard_alu_op_iball_lte]  = "iball_lte",
 481         [midgard_alu_op_iball_eq]   = "iball_eq",
 482         [midgard_alu_op_ibany_neq]  = "ibany_neq",
 483         [midgard_alu_op_ubany_lt]   = "ubany_lt",
 484         [midgard_alu_op_ubany_lte]  = "ubany_lte",
 485         [midgard_alu_op_ibany_lt]   = "ibany_lt",
 486         [midgard_alu_op_ibany_lte]  = "ibany_lte",
 487         [midgard_alu_op_i2f]        = "i2f",
 488         [midgard_alu_op_u2f]        = "u2f",
 489         [midgard_alu_op_icsel]      = "icsel",
 490         [midgard_alu_op_fcsel_i]    = "fcsel_i",
 491         [midgard_alu_op_fcsel]      = "fcsel",
 492         [midgard_alu_op_fround]     = "fround",
 493         [midgard_alu_op_fatan_pt2]  = "fatan_pt2",
 494         [midgard_alu_op_frcp]       = "frcp",
 495         [midgard_alu_op_frsqrt]     = "frsqrt",
 496         [midgard_alu_op_fsqrt]      = "fsqrt",
 497         [midgard_alu_op_fpow]       = "fpow",
 498         [midgard_alu_op_fexp2]      = "fexp2",
 499         [midgard_alu_op_flog2]      = "flog2",
 500         [midgard_alu_op_fsin]       = "fsin",
 501         [midgard_alu_op_fcos]       = "fcos",
 502         [midgard_alu_op_fatan2_pt1] = "fatan2_pt1"
 503 };
 504
 505 static char *load_store_opcode_names[256] = {
 506         [midgard_op_load_attr_16] = "ld_attr_16",
 507         [midgard_op_load_attr_32] = "ld_attr_32",
 508         [midgard_op_load_vary_16] = "ld_vary_16",
 509         [midgard_op_load_vary_32] = "ld_vary_32",
 510         [midgard_op_load_uniform_16] = "ld_uniform_16",
 511         [midgard_op_load_uniform_32] = "ld_uniform_32",
 512         [midgard_op_load_color_buffer_8] = "ld_color_buffer_8",
 513         [midgard_op_load_color_buffer_16] = "ld_color_buffer_16",
 514         [midgard_op_store_vary_16] = "st_vary_16",
 515         [midgard_op_store_vary_32] = "st_vary_32"
 516 };
 517
 518 #endif