1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * hvcserver.h 4 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation 5 * 6 * PPC64 virtual I/O console server support. 7 */ 8 9 #ifndef _PPC64_HVCSERVER_H 10 #define _PPC64_HVCSERVER_H 11 #ifdef __KERNEL__ 12 13 #include <linux/list.h> 14 15 /* Converged Location Code length */ 16 #define HVCS_CLC_LENGTH 79 17 18 /** 19 * hvcs_partner_info - an element in a list of partner info 20 * @node: list_head denoting this partner_info struct's position in the list of 21 * partner info. 22 * @unit_address: The partner unit address of this entry. 23 * @partition_ID: The partner partition ID of this entry. 24 * @location_code: The converged location code of this entry + 1 char for the 25 * null-term. 26 * 27 * This structure outlines the format that partner info is presented to a caller 28 * of the hvcs partner info fetching functions. These are strung together into 29 * a list using linux kernel lists. 30 */ 31 struct hvcs_partner_info { 32 struct list_head node; 33 uint32_t unit_address; 34 uint32_t partition_ID; 35 char location_code[HVCS_CLC_LENGTH + 1]; /* CLC + 1 null-term char */ 36 }; 37 38 extern int hvcs_free_partner_info(struct list_head *head); 39 extern int hvcs_get_partner_info(uint32_t unit_address, 40 struct list_head *head, unsigned long *pi_buff); 41 extern int hvcs_register_connection(uint32_t unit_address, 42 uint32_t p_partition_ID, uint32_t p_unit_address); 43 extern int hvcs_free_connection(uint32_t unit_address); 44 45 #endif /* __KERNEL__ */ 46 #endif /* _PPC64_HVCSERVER_H */ 47