1 files changed, 103 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
new file mode 100644
index 000000000000..c385d50f041b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA,
+ * All Rights Reserved.
+ * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA,
+ * 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ */
+
+#include "drmP.h"
+
+#include "nouveau_drv.h"
+
+int
+nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+        struct drm_file *file_priv = filp->private_data;
+        struct drm_nouveau_private *dev_priv =
+                file_priv->minor->dev->dev_private;
+
+        if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
+                return drm_mmap(filp, vma);
+
+        return ttm_bo_mmap(filp, vma, &dev_priv->ttm.bdev);
+}
+
+static int
+nouveau_ttm_mem_global_init(struct ttm_global_reference *ref)
+{
+        return ttm_mem_global_init(ref->object);
+}
+
+static void
+nouveau_ttm_mem_global_release(struct ttm_global_reference *ref)
+{
+        ttm_mem_global_release(ref->object);
+}
+
+int
+nouveau_ttm_global_init(struct drm_nouveau_private *dev_priv)
+{
+        struct ttm_global_reference *global_ref;
+        int ret;
+
+        global_ref = &dev_priv->ttm.mem_global_ref;
+        global_ref->global_type = TTM_GLOBAL_TTM_MEM;
+        global_ref->size = sizeof(struct ttm_mem_global);
+        global_ref->init = &nouveau_ttm_mem_global_init;
+        global_ref->release = &nouveau_ttm_mem_global_release;
+
+        ret = ttm_global_item_ref(global_ref);
+        if (unlikely(ret != 0)) {
+                DRM_ERROR("Failed setting up TTM memory accounting\n");
+                dev_priv->ttm.mem_global_ref.release = NULL;
+                return ret;
+        }
+
+        dev_priv->ttm.bo_global_ref.mem_glob = global_ref->object;
+        global_ref = &dev_priv->ttm.bo_global_ref.ref;
+        global_ref->global_type = TTM_GLOBAL_TTM_BO;
+        global_ref->size = sizeof(struct ttm_bo_global);
+        global_ref->init = &ttm_bo_global_init;
+        global_ref->release = &ttm_bo_global_release;
+
+        ret = ttm_global_item_ref(global_ref);
+        if (unlikely(ret != 0)) {
+                DRM_ERROR("Failed setting up TTM BO subsystem\n");
+                ttm_global_item_unref(&dev_priv->ttm.mem_global_ref);
+                dev_priv->ttm.mem_global_ref.release = NULL;
+                return ret;
+        }
+
+        return 0;
+}
+
+void
+nouveau_ttm_global_release(struct drm_nouveau_private *dev_priv)
+{
+        if (dev_priv->ttm.mem_global_ref.release == NULL)
+                return;
+
+        ttm_global_item_unref(&dev_priv->ttm.bo_global_ref.ref);
+        ttm_global_item_unref(&dev_priv->ttm.mem_global_ref);
+        dev_priv->ttm.mem_global_ref.release = NULL;
+}
+