brw_state_pool.c File Reference

Implements the state pool allocator. More...

Include dependency graph for brw_state_pool.c:

Go to the source code of this file.

Functions
boolean	brw_pool_alloc (struct brw_mem_pool *pool, unsigned size, unsigned alignment, unsigned *offset_return)
static void	brw_invalidate_pool (struct brw_mem_pool *pool)
static void	brw_init_pool (struct brw_context *brw, unsigned pool_id, unsigned size)
static void	brw_destroy_pool (struct brw_context *brw, unsigned pool_id)
void	brw_pool_check_wrap (struct brw_context *brw, struct brw_mem_pool *pool)
void	brw_init_pools (struct brw_context *brw)
void	brw_destroy_pools (struct brw_context *brw)
void	brw_invalidate_pools (struct brw_context *brw)

---

Detailed Description

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.

Definition in file brw_state_pool.c.

---

Function Documentation

static void brw_destroy_pool	(	struct brw_context *	brw,
		unsigned	pool_id
	)			[static]

Definition at line 101 of file brw_state_pool.c.

References brw_mem_pool::brw, brw_mem_pool::buffer, brw_context::pipe, pipe_buffer_reference(), brw_context::pool, and pipe_context::screen.

{
   struct brw_mem_pool *pool = &brw->pool[pool_id];

   pipe_buffer_reference( pool->brw->pipe.screen,
                          &pool->buffer,
                          NULL );
}

void brw_destroy_pools

(

struct brw_context *

brw

)

Definition at line 127 of file brw_state_pool.c.

References brw_destroy_pool(), BRW_GS_POOL, and BRW_SS_POOL.

{
   brw_destroy_pool(brw, BRW_GS_POOL);
   brw_destroy_pool(brw, BRW_SS_POOL);
}

static void brw_init_pool	(	struct brw_context *	brw,
		unsigned	pool_id,
		unsigned	size
	)			[static]

Definition at line 86 of file brw_state_pool.c.

References brw_mem_pool::brw, brw_mem_pool::buffer, brw_context::pipe, pipe_buffer_create(), brw_context::pool, pipe_context::screen, and brw_mem_pool::size.

{
   struct brw_mem_pool *pool = &brw->pool[pool_id];

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

   pool->buffer = pipe_buffer_create(brw->pipe.screen,
                                     4096,
                                     0 /*  DRM_BO_FLAG_MEM_TT */,
                                     size);
}

void brw_init_pools

(

struct brw_context *

brw

)

Definition at line 121 of file brw_state_pool.c.

References BRW_GS_POOL, brw_init_pool(), and BRW_SS_POOL.

{
   brw_init_pool(brw, BRW_GS_POOL, 0x80000);
   brw_init_pool(brw, BRW_SS_POOL, 0x80000);
}

static void brw_invalidate_pool

(

struct brw_mem_pool *

pool

)

[static]

Definition at line 75 of file brw_state_pool.c.

References brw_mem_pool::brw, brw_clear_all_caches(), BRW_DEBUG, debug_printf(), DEBUG_STATE, and brw_mem_pool::offset.

{
   if (BRW_DEBUG & DEBUG_STATE)
      debug_printf("\n\n\n %s \n\n\n", __FUNCTION__);

   pool->offset = 0;

   brw_clear_all_caches(pool->brw);
}

void brw_invalidate_pools

(

struct brw_context *

brw

)

Definition at line 134 of file brw_state_pool.c.

References BRW_GS_POOL, brw_invalidate_pool(), BRW_SS_POOL, and brw_context::pool.

{
   brw_invalidate_pool(&brw->pool[BRW_GS_POOL]);
   brw_invalidate_pool(&brw->pool[BRW_SS_POOL]);
}

boolean brw_pool_alloc	(	struct brw_mem_pool *	pool,
		unsigned	size,
		unsigned	alignment,
		unsigned *	offset_return
	)

Definition at line 52 of file brw_state_pool.c.

References align(), assert, debug_printf(), brw_mem_pool::offset, brw_mem_pool::size, and TRUE.

{
   unsigned fixup = align(pool->offset, alignment) - pool->offset;

   size = align(size, 4);

   if (pool->offset + fixup + size >= pool->size) {
      debug_printf("%s failed\n", __FUNCTION__);
      assert(0);
      exit(0);
   }

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

   return TRUE;
}

void brw_pool_check_wrap	(	struct brw_context *	brw,
		struct brw_mem_pool *	pool
	)

Definition at line 112 of file brw_state_pool.c.

References brw_state_flags::brw, BRW_NEW_SCENE, brw_context::dirty, brw_mem_pool::offset, brw_mem_pool::size, and brw_context::state.

{
   if (pool->offset > (pool->size * 3) / 4) {
      brw->state.dirty.brw |= BRW_NEW_SCENE;
   }

}

---