brw_state_pool.c 3.91 KB
Newer Older
Zack Rusin's avatar
Zack Rusin committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
/*
 Copyright (C) Intel Corp.  2006.  All Rights Reserved.
 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
 develop this 3D driver.

 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 the rights to use, copy, modify, merge, publish,
 distribute, sublicense, 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 NONINFRINGEMENT.
 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS 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.

 **********************************************************************/
 /*
  * Authors:
  *   Keith Whitwell <keith@tungstengraphics.com>
  */

/** @file brw_state_pool.c
 * Implements the state pool allocator.
 *
 * For the 965, we create two state pools for state cache entries.  Objects
 * will be allocated into the pools depending on which state base address
 * their pointer is relative to in other 965 state.
 *
 * The state pools are relatively simple: As objects are allocated, increment
 * the offset to allocate space.  When the pool is "full" (rather, close to
 * full), we reset the pool and reset the state cache entries that point into
 * the pool.
 */

Zack Rusin's avatar
Zack Rusin committed
45
#include "pipe/internal/p_winsys_screen.h"
46 47
#include "util/u_math.h"
#include "util/u_memory.h"
48
#include "pipe/p_inlines.h"
Zack Rusin's avatar
Zack Rusin committed
49 50 51 52 53
#include "brw_context.h"
#include "brw_state.h"

boolean brw_pool_alloc( struct brw_mem_pool *pool,
			  unsigned size,
54
			  unsigned alignment,
Zack Rusin's avatar
Zack Rusin committed
55 56
			  unsigned *offset_return)
{
57
   unsigned fixup = align(pool->offset, alignment) - pool->offset;
Zack Rusin's avatar
Zack Rusin committed
58

59
   size = align(size, 4);
Zack Rusin's avatar
Zack Rusin committed
60 61

   if (pool->offset + fixup + size >= pool->size) {
62
      debug_printf("%s failed\n", __FUNCTION__);
Zack Rusin's avatar
Zack Rusin committed
63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
      assert(0);
      exit(0);
   }

   pool->offset += fixup;
   *offset_return = pool->offset;
   pool->offset += size;

   return TRUE;
}

static
void brw_invalidate_pool( struct brw_mem_pool *pool )
{
   if (BRW_DEBUG & DEBUG_STATE)
78
      debug_printf("\n\n\n %s \n\n\n", __FUNCTION__);
Zack Rusin's avatar
Zack Rusin committed
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94

   pool->offset = 0;

   brw_clear_all_caches(pool->brw);
}


static void brw_init_pool( struct brw_context *brw,
			   unsigned pool_id,
			   unsigned size )
{
   struct brw_mem_pool *pool = &brw->pool[pool_id];

   pool->size = size;
   pool->brw = brw;

95 96 97 98
   pool->buffer = pipe_buffer_create(brw->pipe.screen,
                                     4096,
                                     0 /*  DRM_BO_FLAG_MEM_TT */,
                                     size);
Zack Rusin's avatar
Zack Rusin committed
99 100 101 102 103 104 105
}

static void brw_destroy_pool( struct brw_context *brw,
			      unsigned pool_id )
{
   struct brw_mem_pool *pool = &brw->pool[pool_id];

106
   pipe_buffer_reference( pool->brw->pipe.screen,
107 108
			  &pool->buffer,
			  NULL );
Zack Rusin's avatar
Zack Rusin committed
109 110 111 112 113 114 115
}


void brw_pool_check_wrap( struct brw_context *brw,
			  struct brw_mem_pool *pool )
{
   if (pool->offset > (pool->size * 3) / 4) {
116
      brw->state.dirty.brw |= BRW_NEW_SCENE;
Zack Rusin's avatar
Zack Rusin committed
117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
   }

}

void brw_init_pools( struct brw_context *brw )
{
   brw_init_pool(brw, BRW_GS_POOL, 0x80000);
   brw_init_pool(brw, BRW_SS_POOL, 0x80000);
}

void brw_destroy_pools( struct brw_context *brw )
{
   brw_destroy_pool(brw, BRW_GS_POOL);
   brw_destroy_pool(brw, BRW_SS_POOL);
}


void brw_invalidate_pools( struct brw_context *brw )
{
   brw_invalidate_pool(&brw->pool[BRW_GS_POOL]);
   brw_invalidate_pool(&brw->pool[BRW_SS_POOL]);
}