[965] Replace the state cache suballocator with direct dri_bufmgr use.

The user-space suballocator that was used avoided relocation computations by
using the general and surface state base registers and allocating those types
of buffers out of pools built on top of single buffer objects.  It also
avoided calls into the buffer manager for these small state allocations, since
only one buffer object was being used.

However, the buffer allocation cost appears to be low, and with relocation
caching, computing relocations for buffers is essentially free.  Additionally,
implementing the suballocator required a don't-fence-subdata flag to disable
waiting on buffer maps so that writing new data didn't block on rendering using
old data, and careful handling when mapping to update old data (which we need
to do for unavoidable relocations with FBOs).  More importantly, when the
suballocator filled, it had no replacement algorithm and just threw out all
of the contents and forced them to be recomputed, which is a significant cost.

This is the first step, which just changes the buffer type, but doesn't yet
improve the hash table to not result in full recompute on overflow.  Because
the buffers are all allocated out of the general buffer allocator, we can
no longer use the general/surface state bases to avoid relocations, and they
are set to 0 instead.

1 files changed, 0 insertions, 141 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_state_pool.c b/src/mesa/drivers/dri/i965/brw_state_pool.c
deleted file mode 100644
index 148bb516a6..0000000000
--- a/src/mesa/drivers/dri/i965/brw_state_pool.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/*
- 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>
-  */
-       
-
-#include "brw_state.h"
-#include "imports.h"
-
-#include "intel_ioctl.h"
-#include "dri_bufmgr.h"
-
-GLboolean brw_pool_alloc( struct brw_mem_pool *pool,
-			  GLuint size,
-			  GLuint align,
-			  GLuint *offset_return)
-{
-   GLuint fixup = ALIGN(pool->offset, align) - pool->offset;
-
-   size = ALIGN(size, 4);
-
-   if (pool->offset + fixup + size >= pool->size) {
-      _mesa_printf("%s failed\n", __FUNCTION__);
-      assert(0);
-      exit(0);
-   }
-
-   pool->offset += fixup;
-   *offset_return = pool->offset;
-   pool->offset += size; 
-  
-   return GL_TRUE;
-}
-
-static
-void brw_invalidate_pool( struct intel_context *intel,
-			  struct brw_mem_pool *pool )
-{
-   if (INTEL_DEBUG & DEBUG_STATE)
-      _mesa_printf("\n\n\n %s \n\n\n", __FUNCTION__);
-
-   pool->offset = 0;
-
-   brw_clear_all_caches(pool->brw);
-}
-
-static void
-brw_invalidate_pool_cb(dri_bo *bo, void *ptr)
-{
-   struct brw_mem_pool *pool = ptr;
-   struct brw_context *brw = pool->brw;
-
-   brw_invalidate_pool(&brw->intel, pool);
-}
-
-static void brw_init_pool( struct brw_context *brw,
-			   GLuint pool_id,
-			   GLuint size )
-{
-   struct brw_mem_pool *pool = &brw->pool[pool_id];
-
-   pool->size = size;   
-   pool->brw = brw;
-
-   pool->buffer = dri_bo_alloc(brw->intel.bufmgr,
-			       (pool_id == BRW_GS_POOL) ? "GS pool" : "SS pool",
-			       size, 4096, DRM_BO_FLAG_MEM_TT);
-
-   /* Disable the backing store for the state cache.  It's not worth the
-    * cost of keeping a backing store copy, since we can just regenerate
-    * the contents at approximately the same cost as the memcpy, and only
-    * if the contents are lost.
-    */
-   if (!brw->intel.ttm) {
-      dri_bo_fake_disable_backing_store(pool->buffer, brw_invalidate_pool_cb,
-					pool);
-   }
-}
-
-static void brw_destroy_pool( struct brw_context *brw,
-			      GLuint pool_id )
-{
-   struct brw_mem_pool *pool = &brw->pool[pool_id];
-
-   dri_bo_unreference(pool->buffer);
-}
-
-
-void brw_pool_check_wrap( struct brw_context *brw,
-			  struct brw_mem_pool *pool )
-{
-   if (pool->offset > (pool->size * 3) / 4) {
-      brw->state.dirty.brw |= BRW_NEW_CONTEXT;
-   }
-
-}
-
-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->intel, &brw->pool[BRW_GS_POOL]);
-   brw_invalidate_pool(&brw->intel, &brw->pool[BRW_SS_POOL]);
-}