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/**********************************************************
* Copyright 2009 VMware, Inc. All rights reserved.
*
* 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 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 AUTHORS OR COPYRIGHT HOLDERS
* 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.
*
**********************************************************/
#include "vmw_screen.h"
#include "vmw_buffer.h"
#include "vmw_fence.h"
#include "pipebuffer/pb_buffer.h"
#include "pipebuffer/pb_bufmgr.h"
/*
* TODO: Have the query pool always ask the fence manager for
* SVGA_FENCE_FLAG_QUERY signaled. Unfortunately, pb_fenced doesn't
* support that currently, so we'd have to create a separate
* pb_fence_ops wrapper that does this implicitly.
*/
/**
* vmw_pools_cleanup - Destroy the buffer pools.
*
* @vws: pointer to a struct vmw_winsys_screen.
*/
void
vmw_pools_cleanup(struct vmw_winsys_screen *vws)
{
if(vws->pools.gmr_fenced)
vws->pools.gmr_fenced->destroy(vws->pools.gmr_fenced);
if (vws->pools.query_fenced)
vws->pools.query_fenced->destroy(vws->pools.query_fenced);
/* gmr_mm pool is already destroyed above */
if (vws->pools.gmr_slab_fenced)
vws->pools.gmr_slab_fenced->destroy(vws->pools.gmr_slab_fenced);
if(vws->pools.gmr)
vws->pools.gmr->destroy(vws->pools.gmr);
if(vws->pools.query)
vws->pools.query->destroy(vws->pools.query);
}
/**
* vmw_query_pools_init - Create a pool of query buffers.
*
* @vws: Pointer to a struct vmw_winsys_screen.
*
* Typically this pool should be created on demand when we
* detect that the app will be using queries. There's nothing
* special with this pool other than the backing kernel buffer size,
* which is limited to 8192.
*/
boolean
vmw_query_pools_init(struct vmw_winsys_screen *vws)
{
vws->pools.query = vmw_gmr_bufmgr_create(vws);
if(!vws->pools.query)
return FALSE;
vws->pools.query_mm = mm_bufmgr_create(vws->pools.query,
VMW_QUERY_POOL_SIZE,
3 /* 8 alignment */);
if(!vws->pools.query_mm)
goto out_no_query_mm;
vws->pools.query_fenced = fenced_bufmgr_create(
vws->pools.query_mm,
vmw_fence_ops_create(vws),
VMW_QUERY_POOL_SIZE,
~0);
if(!vws->pools.query_fenced)
goto out_no_query_fenced;
return TRUE;
out_no_query_fenced:
vws->pools.query_mm->destroy(vws->pools.query_mm);
out_no_query_mm:
vws->pools.query->destroy(vws->pools.query);
return FALSE;
}
/**
* vmw_pools_init - Create a pool of GMR buffers.
*
* @vws: Pointer to a struct vmw_winsys_screen.
*/
boolean
vmw_pools_init(struct vmw_winsys_screen *vws)
{
struct pb_desc desc;
vws->pools.gmr = vmw_gmr_bufmgr_create(vws);
if(!vws->pools.gmr)
goto error;
vws->pools.gmr_mm = mm_bufmgr_create(vws->pools.gmr,
VMW_GMR_POOL_SIZE,
12 /* 4096 alignment */);
if(!vws->pools.gmr_mm)
goto error;
/*
* We disallow "CPU" buffers to be created by the fenced_bufmgr_create,
* because that defers "GPU" buffer creation to buffer validation,
* and at buffer validation we have no means of handling failures
* due to pools space shortage or fragmentation. Effectively this
* makes sure all failures are reported immediately on buffer allocation,
* and we can revert to allocating directly from the kernel.
*/
vws->pools.gmr_fenced = fenced_bufmgr_create(
vws->pools.gmr_mm,
vmw_fence_ops_create(vws),
VMW_GMR_POOL_SIZE,
0);
#ifdef DEBUG
vws->pools.gmr_fenced = pb_debug_manager_create(vws->pools.gmr_fenced,
4096,
4096);
#endif
if(!vws->pools.gmr_fenced)
goto error;
/*
* The slab pool allocates buffers directly from the kernel except
* for very small buffers which are allocated from a slab in order
* not to waste memory, since a kernel buffer is a minimum 4096 bytes.
*
* Here we use it only for emergency in the case our pre-allocated
* buffer pool runs out of memory.
*/
desc.alignment = 64;
desc.usage = ~0;
vws->pools.gmr_slab = pb_slab_range_manager_create(vws->pools.gmr,
64,
8192,
16384,
&desc);
if (!vws->pools.gmr_slab)
goto error;
vws->pools.gmr_slab_fenced =
fenced_bufmgr_create(vws->pools.gmr_slab,
vmw_fence_ops_create(vws),
VMW_MAX_BUFFER_SIZE,
0);
if (!vws->pools.gmr_slab_fenced)
goto error;
vws->pools.query_fenced = NULL;
vws->pools.query_mm = NULL;
vws->pools.query = NULL;
return TRUE;
error:
vmw_pools_cleanup(vws);
return FALSE;
}
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