1 files changed, 97 insertions, 0 deletions
diff --git a/src/gallium/winsys/svga/drm/vmw_screen_pools.c b/src/gallium/winsys/svga/drm/vmw_screen_pools.c
new file mode 100644
index 0000000000..b9823d7857
--- /dev/null
+++ b/src/gallium/winsys/svga/drm/vmw_screen_pools.c
@@ -0,0 +1,97 @@
+/**********************************************************
+ * 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"
+
+void
+vmw_pools_cleanup(struct vmw_winsys_screen *vws)
+{
+   if(vws->pools.gmr_fenced)
+      vws->pools.gmr_fenced->destroy(vws->pools.gmr_fenced);
+
+   /* gmr_mm pool is already destroyed above */
+
+   if(vws->pools.gmr)
+      vws->pools.gmr->destroy(vws->pools.gmr);
+}
+
+
+boolean
+vmw_pools_init(struct vmw_winsys_screen *vws)
+{
+   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;
+
+   /*
+    * GMR buffers are typically shortlived, but it's possible that at a given
+    * instance a buffer is mapped. So to avoid stalling we tell pipebuffer to
+    * forbid creation of buffers beyond half the GMR pool size,
+    *
+    * XXX: It is unclear weather we want to limit the total amount of temporary
+    * malloc memory used to backup unvalidated GMR buffers. On one hand it is
+    * preferrable to fail an allocation than exhausting the guest memory with
+    * temporary data, but on the other hand it is possible that a stupid
+    * application creates large vertex buffers and does not use them for a long
+    * time -- since the svga pipe driver only emits the DMA uploads when a
+    * buffer is used for drawing this would effectively disabling swapping GMR
+    * buffers to memory. So far, the preemptively flush already seems to keep
+    * total allocated memory within relatively small numbers, so we don't
+    * limit.
+    */
+   vws->pools.gmr_fenced = fenced_bufmgr_create(
+      vws->pools.gmr_mm,
+      vmw_fence_ops_create(vws),
+      VMW_GMR_POOL_SIZE/2,
+      ~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;
+
+   return TRUE;
+
+error:
+   vmw_pools_cleanup(vws);
+   return FALSE;
+}
+