Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / gpu / drm / vmwgfx / vmwgfx_ttm_glue.c

diff --git a/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
new file mode 100644 (file)
index 0000000..98d6bfb
--- /dev/null
+++ b/kernel/drivers/gpu/drm/vmwgfx/vmwgfx_ttm_glue.c
@@ -0,0 +1,98 @@
+/**************************************************************************
+ *
+ * Copyright © 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 <drm/drmP.h>
+#include "vmwgfx_drv.h"
+
+int vmw_mmap(struct file *filp, struct vm_area_struct *vma)
+{
+       struct drm_file *file_priv;
+       struct vmw_private *dev_priv;
+
+       if (unlikely(vma->vm_pgoff < VMWGFX_FILE_PAGE_OFFSET)) {
+               DRM_ERROR("Illegal attempt to mmap old fifo space.\n");
+               return -EINVAL;
+       }
+
+       file_priv = filp->private_data;
+       dev_priv = vmw_priv(file_priv->minor->dev);
+       return ttm_bo_mmap(filp, vma, &dev_priv->bdev);
+}
+
+static int vmw_ttm_mem_global_init(struct drm_global_reference *ref)
+{
+       DRM_INFO("global init.\n");
+       return ttm_mem_global_init(ref->object);
+}
+
+static void vmw_ttm_mem_global_release(struct drm_global_reference *ref)
+{
+       ttm_mem_global_release(ref->object);
+}
+
+int vmw_ttm_global_init(struct vmw_private *dev_priv)
+{
+       struct drm_global_reference *global_ref;
+       int ret;
+
+       global_ref = &dev_priv->mem_global_ref;
+       global_ref->global_type = DRM_GLOBAL_TTM_MEM;
+       global_ref->size = sizeof(struct ttm_mem_global);
+       global_ref->init = &vmw_ttm_mem_global_init;
+       global_ref->release = &vmw_ttm_mem_global_release;
+
+       ret = drm_global_item_ref(global_ref);
+       if (unlikely(ret != 0)) {
+               DRM_ERROR("Failed setting up TTM memory accounting.\n");
+               return ret;
+       }
+
+       dev_priv->bo_global_ref.mem_glob =
+               dev_priv->mem_global_ref.object;
+       global_ref = &dev_priv->bo_global_ref.ref;
+       global_ref->global_type = DRM_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 = drm_global_item_ref(global_ref);
+
+       if (unlikely(ret != 0)) {
+               DRM_ERROR("Failed setting up TTM buffer objects.\n");
+               goto out_no_bo;
+       }
+
+       return 0;
+out_no_bo:
+       drm_global_item_unref(&dev_priv->mem_global_ref);
+       return ret;
+}
+
+void vmw_ttm_global_release(struct vmw_private *dev_priv)
+{
+       drm_global_item_unref(&dev_priv->bo_global_ref.ref);
+       drm_global_item_unref(&dev_priv->mem_global_ref);
+}