First Push

NVIDIA-Linux-x86_64-535.161.07-grid/kernel/nvidia/nv-report-err.c

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+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2017 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 "nv-linux.h"
+#include "os-interface.h"
+
+#include "nv-report-err.h"
+
+nv_report_error_cb_t nv_error_cb_handle = NULL;
+
+int nv_register_error_cb(nv_report_error_cb_t report_error_cb)
+{
+    if (report_error_cb == NULL)
+        return -EINVAL;
+
+    if (nv_error_cb_handle != NULL)
+        return -EBUSY;
+
+    nv_error_cb_handle = report_error_cb;
+    return 0;
+}
+
+EXPORT_SYMBOL(nv_register_error_cb);
+
+int nv_unregister_error_cb(void)
+{
+    if (nv_error_cb_handle == NULL)
+        return -EPERM;
+
+    nv_error_cb_handle = NULL;
+    return 0;
+}
+
+EXPORT_SYMBOL(nv_unregister_error_cb);
+
+struct pci_dev;
+
+void nv_report_error(
+    struct pci_dev *dev,
+    NvU32           error_number,
+    const char     *format,
+    va_list         ap
+)
+{
+    va_list ap_copy;
+    char *buffer;
+    int length = 0;
+    int status = NV_OK;
+
+    if (nv_error_cb_handle != NULL)
+    {
+        va_copy(ap_copy, ap);
+        length = vsnprintf(NULL, 0, format, ap);
+        va_end(ap_copy);
+
+        if (length > 0)
+        {
+            status = os_alloc_mem((void *)&buffer, (length + 1)*sizeof(char));
+
+            if (status == NV_OK)
+            {
+                vsnprintf(buffer, length, format, ap);
+                nv_error_cb_handle(dev, error_number, buffer, length + 1);
+                os_free_mem(buffer);
+            }
+        }
+    }
+}