1 files changed, 84 insertions, 0 deletions

diff --git a/drivers/video/tegra/nvmap/nvmap_mru.h b/drivers/video/tegra/nvmap/nvmap_mru.h
new file mode 100644
index 00000000000..6c94630bc3e
--- /dev/null
+++ b/drivers/video/tegra/nvmap/nvmap_mru.h
@@ -0,0 +1,84 @@
+/*
+ * drivers/video/tegra/nvmap_mru.c
+ *
+ * IOVMM virtualization support for nvmap
+ *
+ * Copyright (c) 2009-2010, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+
+#ifndef __VIDEO_TEGRA_NVMAP_MRU_H
+#define __VIDEO_TEGRA_NVMAP_MRU_H
+
+#include <linux/spinlock.h>
+
+#include "nvmap.h"
+
+struct tegra_iovmm_area;
+struct tegra_iovmm_client;
+
+#ifdef CONFIG_NVMAP_RECLAIM_UNPINNED_VM
+
+static inline void nvmap_mru_lock(struct nvmap_share *share)
+{
+        mutex_lock(&share->mru_lock);
+}
+
+static inline void nvmap_mru_unlock(struct nvmap_share *share)
+{
+        mutex_unlock(&share->mru_lock);
+}
+
+int nvmap_mru_init(struct nvmap_share *share);
+
+void nvmap_mru_destroy(struct nvmap_share *share);
+
+size_t nvmap_mru_vm_size(struct tegra_iovmm_client *iovmm);
+
+void nvmap_mru_insert_locked(struct nvmap_share *share, struct nvmap_handle *h);
+
+void nvmap_mru_remove(struct nvmap_share *s, struct nvmap_handle *h);
+
+struct tegra_iovmm_area *nvmap_handle_iovmm_locked(struct nvmap_client *c,
+                                            struct nvmap_handle *h);
+
+#else
+
+#define nvmap_mru_lock(_s)      do { } while (0)
+#define nvmap_mru_unlock(_s)    do { } while (0)
+#define nvmap_mru_init(_s)      0
+#define nvmap_mru_destroy(_s)   do { } while (0)
+#define nvmap_mru_vm_size(_a)   tegra_iovmm_get_vm_size(_a)
+
+static inline void nvmap_mru_insert_locked(struct nvmap_share *share,
+                                           struct nvmap_handle *h)
+{ }
+
+static inline void nvmap_mru_remove(struct nvmap_share *s,
+                                    struct nvmap_handle *h)
+{ }
+
+static inline struct tegra_iovmm_area *nvmap_handle_iovmm_locked(struct nvmap_client *c,
+                                                          struct nvmap_handle *h)
+{
+        BUG_ON(!h->pgalloc.area);
+        return h->pgalloc.area;
+}
+
+#endif
+
+#endif