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/*
* Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
* Copyright 2010 Marek Olšák <maraeo@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**
* This file contains macros for building command buffers in memory.
*
* Use NEW_CB for buffers with a varying size and it will also allocate
* the buffer.
* Use BEGIN_CB for arrays with a static size.
*
* Example:
*
* uint32_t cb[3];
* CB_LOCALS;
*
* BEGIN_CB(cb, 3);
* OUT_CB_REG_SEQ(R500_RB3D_CONSTANT_COLOR_AR, 2);
* OUT_CB(blend_color_red_alpha);
* OUT_CB(blend_color_green_blue);
* END_CB;
*
* And later:
*
* CS_LOCALS;
* WRITE_CS_TABLE(cb, 3);
*
* Or using a little slower variant:
*
* CS_LOCALS;
* BEGIN_CS(cb, 3);
* OUT_CS_TABLE(cb, 3);
* END_CS;
*/
#ifndef R300_CB_H
#define R300_CB_H
#include "r300_reg.h"
/* Yes, I know macros are ugly. However, they are much prettier than the code
* that they neatly hide away, and don't have the cost of function setup, so
* we're going to use them. */
/**
* Command buffer setup.
*/
#define CB_LOCALS \
int cs_count = 0; \
uint32_t *cs_ptr = NULL; \
(void) cs_count; (void) cs_ptr;
#define NEW_CB(ptr, size) do { \
assert(sizeof(*ptr) == sizeof(uint32_t)); \
cs_ptr = (ptr) = (uint32_t*)malloc((size) * sizeof(uint32_t)); \
cs_count = size; \
} while (0)
#define BEGIN_CB(ptr, size) do { \
assert(sizeof(*ptr) == sizeof(uint32_t)); \
cs_ptr = ptr; \
cs_count = size; \
} while (0)
#define END_CB do { \
if (cs_count != 0) \
debug_printf("r300: Warning: cs_count off by %d at (%s, %s:%i)\n", \
cs_count, __FUNCTION__, __FILE__, __LINE__); \
} while (0)
/**
* Storing pure DWORDs.
*/
#define OUT_CB(value) do { \
*cs_ptr = (value); \
cs_ptr++; \
cs_count--; \
} while (0)
#define OUT_CB_TABLE(values, count) do { \
memcpy(cs_ptr, values, count * sizeof(uint32_t)); \
cs_ptr += count; \
cs_count -= count; \
} while (0)
#define OUT_CB_32F(value) \
OUT_CB(fui(value));
#define OUT_CB_REG(register, value) do { \
assert(register); \
OUT_CB(CP_PACKET0(register, 0)); \
OUT_CB(value); \
} while (0)
/* Note: This expects count to be the number of registers,
* not the actual packet0 count! */
#define OUT_CB_REG_SEQ(register, count) do { \
assert(register); \
OUT_CB(CP_PACKET0(register, (count) - 1)); \
} while (0)
#define OUT_CB_ONE_REG(register, count) do { \
assert(register); \
OUT_CB(CP_PACKET0(register, (count) - 1) | RADEON_ONE_REG_WR); \
} while (0)
#define OUT_CB_PKT3(op, count) \
OUT_CB(CP_PACKET3(op, count))
#endif /* R300_CB_H */
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