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         unsigned i;
  32
  33         assert(ctx->chip_class >= R600 && ctx->chip_class <= CAYMAN);
  34         isa->hw_class = ctx->chip_class - R600;
  35
  36         /* reverse lookup maps are required for bytecode parsing */
  37
  38         isa->alu_op2_map = calloc(256, sizeof(unsigned));
  39         if (!isa->alu_op2_map)
  40                 return -1;
  41         isa->alu_op3_map = calloc(256, sizeof(unsigned));
  42         if (!isa->alu_op3_map)
  43                 return -1;
  44         isa->fetch_map = calloc(256, sizeof(unsigned));
  45         if (!isa->fetch_map)
  46                 return -1;
  47         isa->cf_map = calloc(256, sizeof(unsigned));
  48         if (!isa->cf_map)
  49                 return -1;
  50
  51         for (i = 0; i < TABLE_SIZE(alu_op_table); ++i) {
  52                 const struct alu_op_info *op = &alu_op_table[i];
  53                 unsigned opc;
  54                 if (op->flags & AF_LDS || op->slots[isa->hw_class] == 0)
  55                         continue;
  56                 opc = op->opcode[isa->hw_class >> 1];
  57                 assert(opc != -1);
  58                 if (op->src_count == 3)
  59                         isa->alu_op3_map[opc] = i + 1;
  60                 else
  61                         isa->alu_op2_map[opc] = i + 1;
  62         }
  63
  64         for (i = 0; i < TABLE_SIZE(fetch_op_table); ++i) {
  65                 const struct fetch_op_info *op = &fetch_op_table[i];
  66                 unsigned opc = op->opcode[isa->hw_class];
  67                 if ((op->flags & FF_GDS) || ((opc & 0xFF) != opc))
  68                         continue; /* ignore GDS ops and INST_MOD versions for now */
  69                 isa->fetch_map[opc] = i + 1;
  70         }
  71
  72         for (i = 0; i < TABLE_SIZE(cf_op_table); ++i) {
  73                 const struct cf_op_info *op = &cf_op_table[i];
  74                 unsigned opc = op->opcode[isa->hw_class];
  75                 if (opc == -1)
  76                         continue;
  77                 /* using offset for CF_ALU_xxx opcodes because they overlap with other
  78                  * CF opcodes (they use different encoding in hw) */
  79                 if (op->flags & CF_ALU)
  80                         opc += 0x80;
  81                 isa->cf_map[opc] = i + 1;
  82         }
  83
  84         return 0;
  85 }
  86
  87 int r600_isa_destroy(struct r600_isa *isa) {
  88
  89         if (!isa)
  90                 return 0;
  91
  92         if (isa->alu_op2_map)
  93                 free(isa->alu_op2_map);
  94         if (isa->alu_op3_map)
  95                 free(isa->alu_op3_map);
  96         if (isa->fetch_map)
  97                 free(isa->fetch_map);
  98         if (isa->cf_map)
  99                 free(isa->cf_map);
 100
 101         free(isa);
 102         return 0;
 103 }
 104
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