1 files changed, 75 insertions, 0 deletions

diff --git a/include/nvgpu/vm_area.h b/include/nvgpu/vm_area.h
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+++ b/include/nvgpu/vm_area.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2017-2018, NVIDIA CORPORATION.  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.
+ */
+
+#ifndef NVGPU_VM_AREA_H
+#define NVGPU_VM_AREA_H
+
+#include <nvgpu/list.h>
+#include <nvgpu/types.h>
+
+struct vm_gk20a;
+struct gk20a_as_share;
+struct nvgpu_as_alloc_space_args;
+struct nvgpu_as_free_space_args;
+
+struct nvgpu_vm_area {
+        /*
+         * Entry into the list of VM areas owned by a VM.
+         */
+        struct nvgpu_list_node vm_area_list;
+
+        /*
+         * List of buffers mapped into this vm_area.
+         */
+        struct nvgpu_list_node buffer_list_head;
+
+        u32 flags;
+        u32 pgsz_idx;
+        u64 addr;
+        u64 size;
+        bool sparse;
+};
+
+static inline struct nvgpu_vm_area *
+nvgpu_vm_area_from_vm_area_list(struct nvgpu_list_node *node)
+{
+        return (struct nvgpu_vm_area *)
+                ((uintptr_t)node - offsetof(struct nvgpu_vm_area,
+                                            vm_area_list));
+};
+
+/*
+ * Alloc space flags.
+ */
+#define NVGPU_VM_AREA_ALLOC_FIXED_OFFSET                BIT(0)
+#define NVGPU_VM_AREA_ALLOC_SPARSE                      BIT(1)
+
+int nvgpu_vm_area_alloc(struct vm_gk20a *vm, u32 pages, u32 page_size,
+                        u64 *addr, u32 flags);
+int nvgpu_vm_area_free(struct vm_gk20a *vm, u64 addr);
+
+struct nvgpu_vm_area *nvgpu_vm_area_find(struct vm_gk20a *vm, u64 addr);
+int nvgpu_vm_area_validate_buffer(struct vm_gk20a *vm,
+                                  u64 map_offset, u64 map_size, u32 pgsz_idx,
+                                  struct nvgpu_vm_area **pvm_area);
+
+#endif /* NVGPU_VM_AREA_H */