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/************************************************************************** |
* |
* Copyright 2006 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, 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 VMWARE 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. |
* |
**************************************************************************/ |
|
/** |
* \file |
* Buffer manager using the old texture memory manager. |
* |
* \author Jose Fonseca <jfonseca@vmware.com> |
*/ |
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#include "pipe/p_defines.h" |
#include "util/u_debug.h" |
#include "os/os_thread.h" |
#include "util/u_memory.h" |
#include "util/list.h" |
#include "util/u_mm.h" |
#include "pb_buffer.h" |
#include "pb_bufmgr.h" |
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/** |
* Convenience macro (type safe). |
*/ |
#define SUPER(__derived) (&(__derived)->base) |
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struct mm_pb_manager |
{ |
struct pb_manager base; |
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pipe_mutex mutex; |
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pb_size size; |
struct mem_block *heap; |
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pb_size align2; |
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struct pb_buffer *buffer; |
void *map; |
}; |
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static INLINE struct mm_pb_manager * |
mm_pb_manager(struct pb_manager *mgr) |
{ |
assert(mgr); |
return (struct mm_pb_manager *)mgr; |
} |
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struct mm_buffer |
{ |
struct pb_buffer base; |
|
struct mm_pb_manager *mgr; |
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struct mem_block *block; |
}; |
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static INLINE struct mm_buffer * |
mm_buffer(struct pb_buffer *buf) |
{ |
assert(buf); |
return (struct mm_buffer *)buf; |
} |
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static void |
mm_buffer_destroy(struct pb_buffer *buf) |
{ |
struct mm_buffer *mm_buf = mm_buffer(buf); |
struct mm_pb_manager *mm = mm_buf->mgr; |
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assert(!pipe_is_referenced(&mm_buf->base.reference)); |
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pipe_mutex_lock(mm->mutex); |
u_mmFreeMem(mm_buf->block); |
FREE(mm_buf); |
pipe_mutex_unlock(mm->mutex); |
} |
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static void * |
mm_buffer_map(struct pb_buffer *buf, |
unsigned flags, |
void *flush_ctx) |
{ |
struct mm_buffer *mm_buf = mm_buffer(buf); |
struct mm_pb_manager *mm = mm_buf->mgr; |
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/* XXX: it will be necessary to remap here to propagate flush_ctx */ |
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return (unsigned char *) mm->map + mm_buf->block->ofs; |
} |
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static void |
mm_buffer_unmap(struct pb_buffer *buf) |
{ |
/* No-op */ |
} |
|
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static enum pipe_error |
mm_buffer_validate(struct pb_buffer *buf, |
struct pb_validate *vl, |
unsigned flags) |
{ |
struct mm_buffer *mm_buf = mm_buffer(buf); |
struct mm_pb_manager *mm = mm_buf->mgr; |
return pb_validate(mm->buffer, vl, flags); |
} |
|
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static void |
mm_buffer_fence(struct pb_buffer *buf, |
struct pipe_fence_handle *fence) |
{ |
struct mm_buffer *mm_buf = mm_buffer(buf); |
struct mm_pb_manager *mm = mm_buf->mgr; |
pb_fence(mm->buffer, fence); |
} |
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static void |
mm_buffer_get_base_buffer(struct pb_buffer *buf, |
struct pb_buffer **base_buf, |
pb_size *offset) |
{ |
struct mm_buffer *mm_buf = mm_buffer(buf); |
struct mm_pb_manager *mm = mm_buf->mgr; |
pb_get_base_buffer(mm->buffer, base_buf, offset); |
*offset += mm_buf->block->ofs; |
} |
|
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static const struct pb_vtbl |
mm_buffer_vtbl = { |
mm_buffer_destroy, |
mm_buffer_map, |
mm_buffer_unmap, |
mm_buffer_validate, |
mm_buffer_fence, |
mm_buffer_get_base_buffer |
}; |
|
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static struct pb_buffer * |
mm_bufmgr_create_buffer(struct pb_manager *mgr, |
pb_size size, |
const struct pb_desc *desc) |
{ |
struct mm_pb_manager *mm = mm_pb_manager(mgr); |
struct mm_buffer *mm_buf; |
|
/* We don't handle alignments larger then the one initially setup */ |
assert(pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2)); |
if(!pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2)) |
return NULL; |
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pipe_mutex_lock(mm->mutex); |
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mm_buf = CALLOC_STRUCT(mm_buffer); |
if (!mm_buf) { |
pipe_mutex_unlock(mm->mutex); |
return NULL; |
} |
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pipe_reference_init(&mm_buf->base.reference, 1); |
mm_buf->base.alignment = desc->alignment; |
mm_buf->base.usage = desc->usage; |
mm_buf->base.size = size; |
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mm_buf->base.vtbl = &mm_buffer_vtbl; |
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mm_buf->mgr = mm; |
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mm_buf->block = u_mmAllocMem(mm->heap, (int)size, (int)mm->align2, 0); |
if(!mm_buf->block) { |
#if 0 |
debug_printf("warning: heap full\n"); |
mmDumpMemInfo(mm->heap); |
#endif |
FREE(mm_buf); |
pipe_mutex_unlock(mm->mutex); |
return NULL; |
} |
|
/* Some sanity checks */ |
assert(0 <= (pb_size)mm_buf->block->ofs && (pb_size)mm_buf->block->ofs < mm->size); |
assert(size <= (pb_size)mm_buf->block->size && (pb_size)mm_buf->block->ofs + (pb_size)mm_buf->block->size <= mm->size); |
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pipe_mutex_unlock(mm->mutex); |
return SUPER(mm_buf); |
} |
|
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static void |
mm_bufmgr_flush(struct pb_manager *mgr) |
{ |
/* No-op */ |
} |
|
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static void |
mm_bufmgr_destroy(struct pb_manager *mgr) |
{ |
struct mm_pb_manager *mm = mm_pb_manager(mgr); |
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pipe_mutex_lock(mm->mutex); |
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u_mmDestroy(mm->heap); |
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pb_unmap(mm->buffer); |
pb_reference(&mm->buffer, NULL); |
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pipe_mutex_unlock(mm->mutex); |
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FREE(mgr); |
} |
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struct pb_manager * |
mm_bufmgr_create_from_buffer(struct pb_buffer *buffer, |
pb_size size, pb_size align2) |
{ |
struct mm_pb_manager *mm; |
|
if(!buffer) |
return NULL; |
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mm = CALLOC_STRUCT(mm_pb_manager); |
if (!mm) |
return NULL; |
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mm->base.destroy = mm_bufmgr_destroy; |
mm->base.create_buffer = mm_bufmgr_create_buffer; |
mm->base.flush = mm_bufmgr_flush; |
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mm->size = size; |
mm->align2 = align2; /* 64-byte alignment */ |
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pipe_mutex_init(mm->mutex); |
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mm->buffer = buffer; |
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mm->map = pb_map(mm->buffer, |
PB_USAGE_CPU_READ | |
PB_USAGE_CPU_WRITE, NULL); |
if(!mm->map) |
goto failure; |
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mm->heap = u_mmInit(0, (int)size); |
if (!mm->heap) |
goto failure; |
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return SUPER(mm); |
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failure: |
if(mm->heap) |
u_mmDestroy(mm->heap); |
if(mm->map) |
pb_unmap(mm->buffer); |
FREE(mm); |
return NULL; |
} |
|
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struct pb_manager * |
mm_bufmgr_create(struct pb_manager *provider, |
pb_size size, pb_size align2) |
{ |
struct pb_buffer *buffer; |
struct pb_manager *mgr; |
struct pb_desc desc; |
|
if(!provider) |
return NULL; |
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memset(&desc, 0, sizeof(desc)); |
desc.alignment = 1 << align2; |
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buffer = provider->create_buffer(provider, size, &desc); |
if (!buffer) |
return NULL; |
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mgr = mm_bufmgr_create_from_buffer(buffer, size, align2); |
if (!mgr) { |
pb_reference(&buffer, NULL); |
return NULL; |
} |
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return mgr; |
} |