1 files changed, 265 insertions, 0 deletions

diff --git a/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c b/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c
new file mode 100644
index 0000000000..8e6dcf1116
--- /dev/null
+++ b/src/mesa/pipe/pipebuffer/pb_bufmgr_mm.c
@@ -0,0 +1,265 @@
+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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 TUNGSTEN GRAPHICS 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 José Fonseca <jrfonseca@tungstengraphics.com>
+ */
+
+
+#include <assert.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "main/imports.h"
+#include "glapi/glthread.h"
+#include "main/mm.h"
+#include "linked_list.h"
+
+#include "p_defines.h"
+#include "pb_buffer.h"
+#include "pb_bufmgr.h"
+
+
+/**
+ * Convenience macro (type safe).
+ */
+#define SUPER(__derived) (&(__derived)->base)
+
+
+struct mm_buffer_manager
+{
+   struct buffer_manager base;
+   
+   _glthread_Mutex mutex;
+   
+   size_t size;
+   struct mem_block *heap;
+   
+   size_t align2;
+   
+   struct pipe_buffer *buffer;
+   void *map;
+};
+
+
+static inline struct mm_buffer_manager *
+mm_buffer_manager(struct buffer_manager *mgr)
+{
+   assert(mgr);
+   return (struct mm_buffer_manager *)mgr;
+}
+
+
+struct mm_buffer
+{
+   struct pipe_buffer base;
+   
+   struct mm_buffer_manager *mgr;
+   
+   struct mem_block *block;
+};
+
+
+static inline struct mm_buffer *
+mm_buffer(struct pipe_buffer *buf)
+{
+   assert(buf);
+   return (struct mm_buffer *)buf;
+}
+
+
+static void
+mm_buffer_reference(struct pipe_buffer *buf)
+{
+   /* No-op */
+}
+
+
+static void
+mm_buffer_release(struct pipe_buffer *buf)
+{
+   struct mm_buffer *mm_buf = mm_buffer(buf);
+   struct mm_buffer_manager *mm = mm_buf->mgr;
+   
+   _glthread_LOCK_MUTEX(mm->mutex);
+   mmFreeMem(mm_buf->block);
+   free(buf);
+   _glthread_UNLOCK_MUTEX(mm->mutex);
+}
+
+
+static void *
+mm_buffer_map(struct pipe_buffer *buf,
+              unsigned flags)
+{
+   struct mm_buffer *mm_buf = mm_buffer(buf);
+   struct mm_buffer_manager *mm = mm_buf->mgr;
+
+   return (unsigned char *) mm->map + mm_buf->block->ofs;
+}
+
+
+static void
+mm_buffer_unmap(struct pipe_buffer *buf)
+{
+   /* No-op */
+}
+
+
+static void
+mm_buffer_get_base_buffer(struct pipe_buffer *buf,
+                          struct pipe_buffer **base_buf,
+                          unsigned *offset)
+{
+   struct mm_buffer *mm_buf = mm_buffer(buf);
+   struct mm_buffer_manager *mm = mm_buf->mgr;
+   buffer_get_base_buffer(mm->buffer, base_buf, offset);
+   *offset += mm_buf->block->ofs;
+}
+
+
+static const struct pipe_buffer_vtbl 
+mm_buffer_vtbl = {
+      mm_buffer_reference,
+      mm_buffer_release,
+      mm_buffer_map,
+      mm_buffer_unmap,
+      mm_buffer_get_base_buffer
+};
+
+
+static struct pipe_buffer *
+mm_bufmgr_create_buffer(struct buffer_manager *mgr, 
+                        size_t size)
+{
+   struct mm_buffer_manager *mm = mm_buffer_manager(mgr);
+   struct mm_buffer *mm_buf;
+
+   _glthread_LOCK_MUTEX(mm->mutex);
+
+   mm_buf = (struct mm_buffer *)malloc(sizeof(*mm_buf));
+   if (!mm_buf) {
+      _glthread_UNLOCK_MUTEX(mm->mutex);
+      return NULL;
+   }
+
+   mm_buf->base.vtbl = &mm_buffer_vtbl;
+   
+   mm_buf->mgr = mm;
+   
+   mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0);
+   if(!mm_buf->block) {
+      fprintf(stderr, "warning: heap full\n");
+#if 0
+      mmDumpMemInfo(mm->heap);
+#endif
+      
+      mm_buf->block = mmAllocMem(mm->heap, size, mm->align2, 0);
+      if(!mm_buf->block) {
+	 assert(0);
+         free(mm_buf);
+         _glthread_UNLOCK_MUTEX(mm->mutex);
+         return NULL;
+      }
+   }
+   
+   /* Some sanity checks */
+   assert(0 <= mm_buf->block->ofs && mm_buf->block->ofs < mm->size);
+   assert(size <= mm_buf->block->size && mm_buf->block->ofs + mm_buf->block->size <= mm->size);
+   
+   _glthread_UNLOCK_MUTEX(mm->mutex);
+   return SUPER(mm_buf);
+}
+
+
+static void
+mm_bufmgr_destroy(struct buffer_manager *mgr)
+{
+   struct mm_buffer_manager *mm = mm_buffer_manager(mgr);
+   
+   _glthread_LOCK_MUTEX(mm->mutex);
+
+   mmDestroy(mm->heap);
+   
+   buffer_unmap(mm->buffer);
+   buffer_release(mm->buffer);
+   
+   _glthread_UNLOCK_MUTEX(mm->mutex);
+   
+   free(mgr);
+}
+
+
+struct buffer_manager *
+mm_bufmgr_create(struct buffer_manager *provider, 
+                 size_t size, size_t align2) 
+{
+   struct mm_buffer_manager *mm;
+
+   mm = (struct mm_buffer_manager *)calloc(1, sizeof(*mm));
+   if (!mm)
+      return NULL;
+
+   assert(provider);
+   assert(provider->create_buffer);
+   mm->base.create_buffer = mm_bufmgr_create_buffer;
+   mm->base.destroy = mm_bufmgr_destroy;
+
+   mm->size = size;
+   mm->align2 = align2; /* 64-byte alignment */
+
+   _glthread_INIT_MUTEX(mm->mutex);
+
+   mm->buffer = provider->create_buffer(provider, size); 
+   if (!mm->buffer)
+      goto failure;
+
+   mm->map = buffer_map(mm->buffer, 
+                        PIPE_BUFFER_FLAG_READ | PIPE_BUFFER_FLAG_WRITE );
+   if(!mm->map)
+      goto failure;
+
+   mm->heap = mmInit(0, size); 
+   if (!mm->heap)
+      goto failure;
+
+   return SUPER(mm);
+   
+failure:
+if(mm->heap)
+   mmDestroy(mm->heap);
+   if(mm->map)
+      buffer_unmap(mm->buffer);
+   if(mm->buffer)
+      buffer_release(mm->buffer);
+   if(mm)
+      free(mm);
+   return NULL;
+}