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      1 /*
      2  * Copyright 2008 Corbin Simpson <MostAwesomeDude (at) 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 
     33 /* Yes, I know macros are ugly. However, they are much prettier than the code
     34  * that they neatly hide away, and don't have the cost of function setup,so
     35  * we're going to use them. */
     36 
     37 /**
     38  * Command submission setup.
     39  */
     40 
     41 #define CS_LOCALS(context) \
     42     struct radeon_winsys_cs *cs_copy = (context)->cs; \
     43     struct radeon_winsys *cs_winsys = (context)->rws; \
     44     int cs_count = 0; (void) cs_count; (void) cs_winsys;
     45 
     46 #ifdef DEBUG
     47 
     48 #define BEGIN_CS(size) do { \
     49     assert(size <= (RADEON_MAX_CMDBUF_DWORDS - cs_copy->cdw)); \
     50     cs_count = size; \
     51 } while (0)
     52 
     53 #define END_CS do { \
     54     if (cs_count != 0) \
     55         debug_printf("r300: Warning: cs_count off by %d at (%s, %s:%i)\n", \
     56                      cs_count, __FUNCTION__, __FILE__, __LINE__); \
     57     cs_count = 0; \
     58 } while (0)
     59 
     60 #define CS_USED_DW(x) cs_count -= (x)
     61 
     62 #else
     63 
     64 #define BEGIN_CS(size)
     65 #define END_CS
     66 #define CS_USED_DW(x)
     67 
     68 #endif
     69 
     70 /**
     71  * Writing pure DWORDs.
     72  */
     73 
     74 #define OUT_CS(value) do { \
     75     cs_copy->buf[cs_copy->cdw++] = (value); \
     76     CS_USED_DW(1); \
     77 } while (0)
     78 
     79 #define OUT_CS_32F(value) \
     80     OUT_CS(fui(value))
     81 
     82 #define OUT_CS_REG(register, value) do { \
     83     OUT_CS(CP_PACKET0(register, 0)); \
     84     OUT_CS(value); \
     85 } while (0)
     86 
     87 /* Note: This expects count to be the number of registers,
     88  * not the actual packet0 count! */
     89 #define OUT_CS_REG_SEQ(register, count) \
     90     OUT_CS(CP_PACKET0((register), ((count) - 1)))
     91 
     92 #define OUT_CS_ONE_REG(register, count) \
     93     OUT_CS(CP_PACKET0((register), ((count) - 1)) | RADEON_ONE_REG_WR)
     94 
     95 #define OUT_CS_PKT3(op, count) \
     96     OUT_CS(CP_PACKET3(op, count))
     97 
     98 #define OUT_CS_TABLE(values, count) do { \
     99     memcpy(cs_copy->buf + cs_copy->cdw, values, count * 4); \
    100     cs_copy->cdw += count; \
    101     CS_USED_DW(count); \
    102 } while (0)
    103 
    104 
    105 /**
    106  * Writing relocations.
    107  */
    108 
    109 #define OUT_CS_RELOC(r) do { \
    110     assert((r)); \
    111     assert((r)->cs_buf); \
    112     cs_winsys->cs_write_reloc(cs_copy, (r)->cs_buf); \
    113     CS_USED_DW(2); \
    114 } while (0)
    115 
    116 
    117 /**
    118  * Command buffer emission.
    119  */
    120 
    121 #define WRITE_CS_TABLE(values, count) do { \
    122     assert(cs_count == 0); \
    123     memcpy(cs_copy->buf + cs_copy->cdw, (values), (count) * 4); \
    124     cs_copy->cdw += (count); \
    125 } while (0)
    126 
    127 #endif /* R300_CS_H */
    128