src/gallium/drivers/r600/r600_isa.c

   1 /*
   2  * Copyright 2012 Vadim Girlin <vadimgirlin@gmail.com>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * 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 AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Vadim Girlin
  25  */
  26
  27 #include "r600_pipe.h"
  28 #include "r600_isa.h"
  29
  30 int r600_isa_init(struct r600_context *ctx, struct r600_isa *isa) {
  31
  32         assert(ctx->chip_class >= R600 && ctx->chip_class <= CAYMAN);
  33         isa->hw_class = ctx->chip_class - R600;
  34
  35         assert(isa->hw_class >= ISA_CC_R600 && isa->hw_class <= ISA_CC_EVERGREEN);
  36
  37         /* reverse lookup maps are required for bytecode parsing only,
  38          * currently it's needed for handling the bytestream from llvm backend */
  39 #if defined R600_USE_LLVM || defined HAVE_OPENCL
  40         unsigned i, use_llvm;
  41
  42         use_llvm = debug_get_bool_option("R600_LLVM", TRUE);
  43
  44         if (!use_llvm)
  45                 return 0;
  46
  47         isa->alu_op2_map = calloc(256, sizeof(unsigned));
  48         if (!isa->alu_op2_map)
  49                 return -1;
  50         isa->alu_op3_map = calloc(256, sizeof(unsigned));
  51         if (!isa->alu_op3_map)
  52                 return -1;
  53         isa->fetch_map = calloc(256, sizeof(unsigned));
  54         if (!isa->fetch_map)
  55                 return -1;
  56         isa->cf_map = calloc(256, sizeof(unsigned));
  57         if (!isa->cf_map)
  58                 return -1;
  59
  60         for (i = 0; i < TABLE_SIZE(alu_op_table); ++i) {
  61                 const struct alu_op_info *op = &alu_op_table[i];
  62                 unsigned opc;
  63                 if (op->flags & AF_LDS || op->slots[isa->hw_class] == 0)
  64                         continue;
  65                 opc = op->opcode[isa->hw_class >> 1];
  66                 assert(opc != -1);
  67                 if (op->src_count == 3)
  68                         isa->alu_op3_map[opc] = i + 1;
  69                 else
  70                         isa->alu_op2_map[opc] = i + 1;
  71         }
  72
  73         for (i = 0; i < TABLE_SIZE(fetch_op_table); ++i) {
  74                 const struct fetch_op_info *op = &fetch_op_table[i];
  75                 unsigned opc = op->opcode[isa->hw_class];
  76                 if ((op->flags & FF_GDS) || ((opc & 0xFF) != opc))
  77                         continue; /* ignore GDS ops and INST_MOD versions for now */
  78                 isa->fetch_map[opc] = i + 1;
  79         }
  80
  81         for (i = 0; i < TABLE_SIZE(cf_op_table); ++i) {
  82                 const struct cf_op_info *op = &cf_op_table[i];
  83                 unsigned opc = op->opcode[isa->hw_class];
  84                 if (opc == -1)
  85                         continue;
  86                 /* using offset for CF_ALU_xxx opcodes because they overlap with other
  87                  * CF opcodes (they use different encoding in hw) */
  88                 if (op->flags & CF_ALU)
  89                         opc += 0x80;
  90                 isa->cf_map[opc] = i + 1;
  91         }
  92
  93 #endif
  94         return 0;
  95 }
  96
  97 int r600_isa_destroy(struct r600_isa *isa) {
  98
  99         if (!isa)
 100                 return 0;
 101
 102         if (isa->alu_op2_map)
 103                 free(isa->alu_op2_map);
 104         if (isa->alu_op3_map)
 105                 free(isa->alu_op3_map);
 106         if (isa->fetch_map)
 107                 free(isa->fetch_map);
 108         if (isa->cf_map)
 109                 free(isa->cf_map);
 110
 111         free(isa);
 112         return 0;
 113 }
 114
 115
 116