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 /**
  24  * This file contains macros for immediate command submission.
  25  */
  26
  27 #ifndef R300_CS_H
  28 #define R300_CS_H
  29
  30 #include "r300_reg.h"
  31 #include "r300_context.h"
  32 #include "r300_winsys.h"
  33
  34 /* Yes, I know macros are ugly. However, they are much prettier than the code
  35  * that they neatly hide away, and don't have the cost of function setup,so
  36  * we're going to use them. */
  37
  38 /**
  39  * Command submission setup.
  40  */
  41
  42 #define CS_LOCALS(context) \
  43     struct r300_winsys_cs *cs_copy = (context)->cs; \
  44     struct r300_winsys_screen *cs_winsys = (context)->rws; \
  45     int cs_count = 0; (void) cs_count; (void) cs_winsys;
  46
  47 #ifdef DEBUG
  48
  49 #define BEGIN_CS(size) do { \
  50     assert(size <= (R300_MAX_CMDBUF_DWORDS - cs_copy->cdw)); \
  51     cs_count = size; \
  52 } while (0)
  53
  54 #define END_CS do { \
  55     if (cs_count != 0) \
  56         debug_printf("r300: Warning: cs_count off by %d at (%s, %s:%i)\n", \
  57                      cs_count, __FUNCTION__, __FILE__, __LINE__); \
  58     cs_count = 0; \
  59 } while (0)
  60
  61 #define CS_USED_DW(x) cs_count -= (x)
  62
  63 #else
  64
  65 #define BEGIN_CS(size)
  66 #define END_CS
  67 #define CS_USED_DW(x)
  68
  69 #endif
  70
  71 /**
  72  * Writing pure DWORDs.
  73  */
  74
  75 #define OUT_CS(value) do { \
  76     cs_copy->buf[cs_copy->cdw++] = (value); \
  77     CS_USED_DW(1); \
  78 } while (0)
  79
  80 #define OUT_CS_32F(value) \
  81     OUT_CS(fui(value))
  82
  83 #define OUT_CS_REG(register, value) do { \
  84     OUT_CS(CP_PACKET0(register, 0)); \
  85     OUT_CS(value); \
  86 } while (0)
  87
  88 /* Note: This expects count to be the number of registers,
  89  * not the actual packet0 count! */
  90 #define OUT_CS_REG_SEQ(register, count) \
  91     OUT_CS(CP_PACKET0((register), ((count) - 1)))
  92
  93 #define OUT_CS_ONE_REG(register, count) \
  94     OUT_CS(CP_PACKET0((register), ((count) - 1)) | RADEON_ONE_REG_WR)
  95
  96 #define OUT_CS_PKT3(op, count) \
  97     OUT_CS(CP_PACKET3(op, count))
  98
  99 #define OUT_CS_TABLE(values, count) do { \
 100     memcpy(cs_copy->buf + cs_copy->cdw, values, count * 4); \
 101     cs_copy->cdw += count; \
 102     CS_USED_DW(count); \
 103 } while (0)
 104
 105
 106 /**
 107  * Writing relocations.
 108  */
 109
 110 #define OUT_CS_RELOC(r) do { \
 111     assert((r)); \
 112     assert((r)->cs_buf); \
 113     cs_winsys->cs_write_reloc(cs_copy, (r)->cs_buf); \
 114     CS_USED_DW(2); \
 115 } while (0)
 116
 117
 118 /**
 119  * Command buffer emission.
 120  */
 121
 122 #define WRITE_CS_TABLE(values, count) do { \
 123     assert(cs_count == 0); \
 124     memcpy(cs_copy->buf + cs_copy->cdw, (values), (count) * 4); \
 125     cs_copy->cdw += (count); \
 126 } while (0)
 127
 128 #endif /* R300_CS_H */