1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2025 Oxide Computer Company 14 */ 15 16 #ifndef _ZEN_UDF_H 17 #define _ZEN_UDF_H 18 19 /* 20 * Private ioctls for interfacing with the zen_udf driver. 21 */ 22 23 #ifdef __cplusplus 24 extern "C" { 25 #endif 26 27 #define ZEN_UDF_IOCTL (('u' << 24) | ('d' << 16) | ('f' << 8)) 28 29 #define ZEN_UDF_READ (ZEN_UDF_IOCTL | 0x01) 30 31 typedef enum zen_udf_flags { 32 /* 33 * Perform a broadcast rather than per-instance read. This is 34 * effectively an OR of the result across all instances. 35 */ 36 ZEN_UDF_F_BCAST = 1 << 0, 37 /* 38 * Treat the given register as 64-bits wide rather than 32-bits. 39 */ 40 ZEN_UDF_F_64 = 1 << 1 41 42 } zen_udf_flags_t; 43 44 typedef struct zen_udf_io { 45 zen_udf_flags_t zui_flags; 46 uint8_t zui_inst; 47 uint8_t zui_func; 48 uint16_t zui_reg; 49 uint64_t zui_data; 50 } zen_udf_io_t; 51 52 #ifdef __cplusplus 53 } 54 #endif 55 56 #endif /* _ZEN_UDF_H */ 57