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diff --git a/src/nvidia-modprobe-utils.h b/src/nvidia-modprobe-utils.h
new file mode 100644
index 0000000..e06b4a4
--- /dev/null
+++ b/src/nvidia-modprobe-utils.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright (c) 2013, NVIDIA CORPORATION.
+ *
+ * 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.
+ *
+ * This file provides utility functions on Linux for loading the
+ * NVIDIA kernel module and creating NVIDIA device files.
+ */
+
+#ifndef __NVIDIA_MODPROBE_UTILS_H__
+#define __NVIDIA_MODPROBE_UTILS_H__
+
+#include <stdio.h>
+
+#define NV_MAX_CHARACTER_DEVICE_FILE_STRLEN 128
+#define NV_MODULE_INSTANCE_NONE -1
+#define NV_MODULE_INSTANCE_ZERO 0
+#define NV_MAX_MODULE_INSTANCES 8
+#define NV_CTL_DEVICE_NUM 255
+#define NV_MODESET_MINOR_DEVICE_NUM 254
+
+#define NV_FRONTEND_CONTROL_DEVICE_MINOR_MAX NV_CTL_DEVICE_NUM
+
+#define NV_DEVICE_FILE_PATH "/dev/nvidia%d"
+#define NV_CTRL_DEVICE_FILE_PATH "/dev/nvidiactl"
+#define NV_MODESET_DEVICE_NAME "/dev/nvidia-modeset"
+#define NV_VGPU_VFIO_DEVICE_NAME "/dev/nvidia-vgpu%d"
+#define NV_NVLINK_DEVICE_NAME "/dev/nvidia-nvlink"
+
+#define NV_NMODULE_CTRL_DEVICE_FILE_PATH "/dev/nvidiactl%d"
+
+#define NV_FRONTEND_CONTROL_DEVICE_MINOR_MIN \
+ (NV_FRONTEND_CONTROL_DEVICE_MINOR_MAX - \
+ NV_MAX_MODULE_INSTANCES)
+
+#define NV_FRONTEND_IS_CONTROL_DEVICE(x) \
+ ((x <= NV_FRONTEND_CONTROL_DEVICE_MINOR_MAX) && \
+ (x > NV_FRONTEND_CONTROL_DEVICE_MINOR_MIN))
+
+#if defined(NV_LINUX)
+
+typedef enum
+{
+ NvDeviceFileStateFileExists = 0,
+ NvDeviceFileStateChrDevOk,
+ NvDeviceFileStatePermissionsOk
+} NvDeviceFileState;
+
+static __inline__ void nvidia_update_file_state(int *state,
+ NvDeviceFileState value)
+{
+ *state |= (1 << value);
+}
+
+static __inline__ int nvidia_test_file_state(int state,
+ NvDeviceFileState value)
+{
+ return !!(state & (1 << value));
+}
+
+int nvidia_get_file_state(int minor, int module_instance);
+int nvidia_modprobe(const int print_errors, int module_instance);
+int nvidia_mknod(int minor, int module_instance);
+int nvidia_uvm_modprobe(void);
+int nvidia_uvm_mknod(int base_minor);
+int nvidia_modeset_modprobe(void);
+int nvidia_modeset_mknod(void);
+int nvidia_vgpu_vfio_mknod(int minor_num);
+int nvidia_nvlink_mknod(void);
+
+int mknod_helper(int major, int minor, const char *path, const char *proc_path);
+int get_chardev_major(const char *name);
+
+#endif /* NV_LINUX */
+
+/*
+ * Detect use of multiple kernel module instances. Use a single
+ * module instance unless instance != NV_MODULE_INSTANCE_NONE
+ */
+static __inline__ int is_multi_module(int module_instance)
+{
+ return (module_instance != NV_MODULE_INSTANCE_NONE);
+}
+
+
+/*
+ * Construct the device file name, based on 'minor'. If an error
+ * occurs, the nul terminator will be written to name[0].
+ */
+static __inline__ void assign_device_file_name
+(
+ char name[NV_MAX_CHARACTER_DEVICE_FILE_STRLEN],
+ int minor,
+ int module_instance
+)
+{
+ int ret;
+
+ if ((minor < 0) || (minor > NV_CTL_DEVICE_NUM))
+ {
+ goto fail;
+ }
+
+ if (!is_multi_module(module_instance) && minor == NV_CTL_DEVICE_NUM)
+ {
+ ret = snprintf(name,
+ NV_MAX_CHARACTER_DEVICE_FILE_STRLEN,
+ NV_CTRL_DEVICE_FILE_PATH);
+ }
+ else if (is_multi_module(module_instance) &&
+ NV_FRONTEND_IS_CONTROL_DEVICE(minor))
+ {
+ ret = snprintf(name,
+ NV_MAX_CHARACTER_DEVICE_FILE_STRLEN,
+ NV_NMODULE_CTRL_DEVICE_FILE_PATH,
+ module_instance);
+ }
+ else
+ {
+ ret = snprintf(name,
+ NV_MAX_CHARACTER_DEVICE_FILE_STRLEN,
+ NV_DEVICE_FILE_PATH, minor);
+ }
+
+ if (ret <= 0)
+ {
+ goto fail;
+ }
+
+ name[NV_MAX_CHARACTER_DEVICE_FILE_STRLEN - 1] = '\0';
+
+ return;
+
+fail:
+
+ name[0] = '\0';
+}
+
+#endif /* __NVIDIA_MODPROBE_UTILS_H__ */
\ No newline at end of file
|
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