515.43.04

kernel-open/nvidia/os-usermap.c

@@ -0,0 +1,78 @@
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 1999-2011 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define  __NO_VERSION__
+
+#include "os-interface.h"
+#include "nv-linux.h"
+
+void* NV_API_CALL os_map_user_space(
+    NvU64   start,
+    NvU64   size_bytes,
+    NvU32   mode,
+    NvU32   protect,
+    void  **priv_data
+)
+{
+    return (void *)(NvUPtr)start;
+}
+
+void NV_API_CALL os_unmap_user_space(
+    void  *address,
+    NvU64  size,
+    void  *priv_data
+)
+{
+}
+
+NV_STATUS NV_API_CALL os_match_mmap_offset(
+    void  *pAllocPrivate,
+    NvU64  offset,
+    NvU64 *pPageIndex
+)
+{
+    nv_alloc_t *at = pAllocPrivate;
+    NvU64 i;
+
+    for (i = 0; i < at->num_pages; i++)
+    {
+        if (at->flags.contig)
+        {
+            if (offset == (at->page_table[0]->phys_addr + (i * PAGE_SIZE)))
+            {
+                *pPageIndex = i;
+                return NV_OK;
+            }
+        }
+        else
+        {
+            if (offset == at->page_table[i]->phys_addr)
+            {
+                *pPageIndex = i;
+                return NV_OK;
+            }
+        }
+    }
+
+    return NV_ERR_OBJECT_NOT_FOUND;
+}