src/gallium/drivers/r300/r300_cs.h

   1 /*
   2  * Copyright 2008 Corbin Simpson <MostAwesomeDude@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 #ifndef R300_CS_H
  24 #define R300_CS_H
  25
  26 #include "r300_reg.h"
  27 #include "r300_winsys.h"
  28
  29 /* Pack a 32-bit float into a dword. */
  30 static uint32_t pack_float_32(float f)
  31 {
  32     union {
  33         float f;
  34         uint32_t u;
  35     } u;
  36
  37     u.f = f;
  38     return u.u;
  39 }
  40
  41 /* Yes, I know macros are ugly. However, they are much prettier than the code
  42  * that they neatly hide away, and don't have the cost of function setup,so
  43  * we're going to use them. */
  44
  45 #define MAX_CS_SIZE 64 * 1024 / 4
  46
  47 /* XXX stolen from radeon_drm.h */
  48 #define RADEON_GEM_DOMAIN_CPU  0x1
  49 #define RADEON_GEM_DOMAIN_GTT  0x2
  50 #define RADEON_GEM_DOMAIN_VRAM 0x4
  51
  52 /* XXX stolen from radeon_reg.h */
  53 #define RADEON_CP_PACKET0 0x0
  54
  55 #define CP_PACKET0(register, count) \
  56     (RADEON_CP_PACKET0 | ((count) << 16) | ((register) >> 2))
  57
  58 #define CP_PACKET3(op, count) \
  59     (RADEON_CP_PACKET3 | (op) | ((count) << 16))
  60
  61 #define CS_LOCALS(context) \
  62     struct r300_winsys* cs_winsys = context->winsys; \
  63     struct radeon_cs* cs = cs_winsys->cs; \
  64     int cs_count = 0;
  65
  66 #define CHECK_CS(size) \
  67     cs_winsys->check_cs(cs, (size))
  68
  69 #define BEGIN_CS(size) do { \
  70     CHECK_CS(size); \
  71     debug_printf("r300: BEGIN_CS in %s (%s:%d)\n", __FUNCTION__, __FILE__, \
  72         __LINE__); \
  73     cs_winsys->begin_cs(cs, (size), __FILE__, __FUNCTION__, __LINE__); \
  74     int cs_count = size; \
  75 } while (0)
  76
  77 #define OUT_CS(value) do { \
  78     cs_winsys->write_cs_dword(cs, (value)); \
  79     cs_count--; \
  80 } while (0)
  81
  82 #define OUT_CS_32F(value) do { \
  83     cs_winsys->write_cs_dword(cs, pack_float_32(value)); \
  84     cs_count--; \
  85 } while (0)
  86
  87 #define OUT_CS_REG(register, value) do { \
  88     debug_printf("r300: writing 0x%x to register 0x%x\n", value, register); \
  89     OUT_CS(CP_PACKET0(register, 0)); \
  90     OUT_CS(value); \
  91 } while (0)
  92
  93 /* Note: This expects count to be the number of registers,
  94  * not the actual packet0 count! */
  95 #define OUT_CS_REG_SEQ(register, count) do { \
  96     debug_printf("r300: writing register sequence 0x%x\n", register); \
  97     OUT_CS(CP_PACKET0(register, ((count) - 1))); \
  98 } while (0)
  99
 100 #define OUT_CS_RELOC(bo, offset, rd, wd, flags) do { \
 101     debug_printf("r300: writing relocation for buffer %p, offset %d\n", \
 102         bo, offset); \
 103     OUT_CS(offset); \
 104     cs_winsys->write_cs_reloc(cs, bo, rd, wd, flags); \
 105 } while (0)
 106
 107 #define END_CS do { \
 108     debug_printf("r300: END_CS in %s (%s:%d)\n", __FUNCTION__, __FILE__, \
 109         __LINE__); \
 110     if (cs_count != 0) \
 111         debug_printf("r300: Warning: cs_count off by %d\n", cs_count); \
 112     cs_winsys->end_cs(cs, __FILE__, __FUNCTION__, __LINE__); \
 113 } while (0)
 114
 115 #define FLUSH_CS do { \
 116     debug_printf("r300: FLUSH_CS in %s (%s:%d)\n", __FUNCTION__, __FILE__, \
 117         __LINE__); \
 118     cs_winsys->flush_cs(cs); \
 119 } while (0)
 120
 121 #include "r300_cs_inlines.h"
 122
 123 #endif /* R300_CS_H */