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-rw-r--r--util/types.h35
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diff --git a/util/types.h b/util/types.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _MISC_H
+#define _MISC_H
+
+/* type conversion helpers */
+
+#include <stdint.h>
+#include <linux/types.h>
+
+#include <libnvme.h>
+
+#define ABSOLUTE_ZERO_CELSIUS -273
+
+static inline long kelvin_to_celsius(long t)
+{
+ return t + ABSOLUTE_ZERO_CELSIUS;
+}
+
+/* uint128_t is not always available, define our own. */
+union nvme_uint128 {
+ __u8 bytes[16];
+ __u32 words[4]; /* [0] is most significant word */
+};
+
+typedef union nvme_uint128 nvme_uint128_t;
+
+nvme_uint128_t le128_to_cpu(__u8 *data);
+long double int128_to_double(__u8 *data);
+uint64_t int48_to_long(__u8 *data);
+
+char *uint128_t_to_string(nvme_uint128_t val);
+const char *util_uuid_to_string(unsigned char uuid[NVME_UUID_LEN]);
+const char *util_fw_to_string(char *c);
+
+#endif /* _MISC_H */