321 lines
7.3 KiB
C
321 lines
7.3 KiB
C
/**************************************************************************
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*
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* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* \file
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* Buffer manager using the old texture memory manager.
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*
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* \author Jose Fonseca <jrfonseca@tungstengraphics.com>
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*/
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#include "pipe/p_defines.h"
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#include "util/u_debug.h"
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#include "os/os_thread.h"
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#include "util/u_memory.h"
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#include "util/u_double_list.h"
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#include "util/u_mm.h"
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#include "pb_buffer.h"
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#include "pb_bufmgr.h"
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/**
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* Convenience macro (type safe).
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*/
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#define SUPER(__derived) (&(__derived)->base)
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struct mm_pb_manager
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{
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struct pb_manager base;
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pipe_mutex mutex;
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pb_size size;
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struct mem_block *heap;
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pb_size align2;
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struct pb_buffer *buffer;
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void *map;
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};
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static INLINE struct mm_pb_manager *
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mm_pb_manager(struct pb_manager *mgr)
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{
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assert(mgr);
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return (struct mm_pb_manager *)mgr;
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}
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struct mm_buffer
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{
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struct pb_buffer base;
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struct mm_pb_manager *mgr;
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struct mem_block *block;
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};
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static INLINE struct mm_buffer *
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mm_buffer(struct pb_buffer *buf)
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{
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assert(buf);
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return (struct mm_buffer *)buf;
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}
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static void
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mm_buffer_destroy(struct pb_buffer *buf)
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{
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struct mm_buffer *mm_buf = mm_buffer(buf);
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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);
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u_mmFreeMem(mm_buf->block);
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FREE(mm_buf);
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pipe_mutex_unlock(mm->mutex);
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}
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static void *
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mm_buffer_map(struct pb_buffer *buf,
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unsigned flags,
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void *flush_ctx)
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{
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struct mm_buffer *mm_buf = mm_buffer(buf);
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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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}
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static void
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mm_buffer_unmap(struct pb_buffer *buf)
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{
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/* No-op */
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}
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static enum pipe_error
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mm_buffer_validate(struct pb_buffer *buf,
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struct pb_validate *vl,
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unsigned flags)
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{
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struct mm_buffer *mm_buf = mm_buffer(buf);
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struct mm_pb_manager *mm = mm_buf->mgr;
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return pb_validate(mm->buffer, vl, flags);
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}
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static void
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mm_buffer_fence(struct pb_buffer *buf,
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struct pipe_fence_handle *fence)
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{
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struct mm_buffer *mm_buf = mm_buffer(buf);
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struct mm_pb_manager *mm = mm_buf->mgr;
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pb_fence(mm->buffer, fence);
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}
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static void
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mm_buffer_get_base_buffer(struct pb_buffer *buf,
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struct pb_buffer **base_buf,
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pb_size *offset)
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{
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struct mm_buffer *mm_buf = mm_buffer(buf);
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struct mm_pb_manager *mm = mm_buf->mgr;
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pb_get_base_buffer(mm->buffer, base_buf, offset);
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*offset += mm_buf->block->ofs;
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}
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static const struct pb_vtbl
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mm_buffer_vtbl = {
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mm_buffer_destroy,
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mm_buffer_map,
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mm_buffer_unmap,
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mm_buffer_validate,
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mm_buffer_fence,
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mm_buffer_get_base_buffer
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};
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static struct pb_buffer *
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mm_bufmgr_create_buffer(struct pb_manager *mgr,
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pb_size size,
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const struct pb_desc *desc)
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{
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struct mm_pb_manager *mm = mm_pb_manager(mgr);
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struct mm_buffer *mm_buf;
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/* We don't handle alignments larger then the one initially setup */
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assert(pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2));
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if(!pb_check_alignment(desc->alignment, (pb_size)1 << mm->align2))
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return NULL;
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pipe_mutex_lock(mm->mutex);
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mm_buf = CALLOC_STRUCT(mm_buffer);
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if (!mm_buf) {
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pipe_mutex_unlock(mm->mutex);
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return NULL;
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}
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pipe_reference_init(&mm_buf->base.reference, 1);
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mm_buf->base.alignment = desc->alignment;
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mm_buf->base.usage = desc->usage;
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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);
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if(!mm_buf->block) {
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#if 0
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debug_printf("warning: heap full\n");
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mmDumpMemInfo(mm->heap);
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#endif
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FREE(mm_buf);
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pipe_mutex_unlock(mm->mutex);
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return NULL;
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}
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/* Some sanity checks */
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assert(0 <= (pb_size)mm_buf->block->ofs && (pb_size)mm_buf->block->ofs < mm->size);
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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);
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return SUPER(mm_buf);
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}
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static void
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mm_bufmgr_flush(struct pb_manager *mgr)
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{
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/* No-op */
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}
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static void
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mm_bufmgr_destroy(struct pb_manager *mgr)
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{
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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);
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pb_reference(&mm->buffer, NULL);
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pipe_mutex_unlock(mm->mutex);
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FREE(mgr);
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}
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struct pb_manager *
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mm_bufmgr_create_from_buffer(struct pb_buffer *buffer,
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pb_size size, pb_size align2)
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{
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struct mm_pb_manager *mm;
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if(!buffer)
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return NULL;
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mm = CALLOC_STRUCT(mm_pb_manager);
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if (!mm)
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return NULL;
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mm->base.destroy = mm_bufmgr_destroy;
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mm->base.create_buffer = mm_bufmgr_create_buffer;
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mm->base.flush = mm_bufmgr_flush;
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mm->size = size;
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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,
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PB_USAGE_CPU_READ |
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PB_USAGE_CPU_WRITE, NULL);
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if(!mm->map)
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goto failure;
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mm->heap = u_mmInit(0, (int)size);
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if (!mm->heap)
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goto failure;
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return SUPER(mm);
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failure:
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if(mm->heap)
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u_mmDestroy(mm->heap);
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if(mm->map)
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pb_unmap(mm->buffer);
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FREE(mm);
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return NULL;
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}
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struct pb_manager *
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mm_bufmgr_create(struct pb_manager *provider,
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pb_size size, pb_size align2)
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{
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struct pb_buffer *buffer;
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struct pb_manager *mgr;
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struct pb_desc desc;
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if(!provider)
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return NULL;
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memset(&desc, 0, sizeof(desc));
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desc.alignment = 1 << align2;
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buffer = provider->create_buffer(provider, size, &desc);
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if (!buffer)
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return NULL;
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mgr = mm_bufmgr_create_from_buffer(buffer, size, align2);
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if (!mgr) {
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pb_reference(&buffer, NULL);
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return NULL;
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}
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return mgr;
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}
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