11a59d1b8SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-or-later */ 2b8b572e1SStephen Rothwell /* 3b8b572e1SStephen Rothwell * hvcserver.h 4b8b572e1SStephen Rothwell * Copyright (C) 2004 Ryan S Arnold, IBM Corporation 5b8b572e1SStephen Rothwell * 6b8b572e1SStephen Rothwell * PPC64 virtual I/O console server support. 7b8b572e1SStephen Rothwell */ 8b8b572e1SStephen Rothwell 9b8b572e1SStephen Rothwell #ifndef _PPC64_HVCSERVER_H 10b8b572e1SStephen Rothwell #define _PPC64_HVCSERVER_H 11b8b572e1SStephen Rothwell #ifdef __KERNEL__ 12b8b572e1SStephen Rothwell 13b8b572e1SStephen Rothwell #include <linux/list.h> 14b8b572e1SStephen Rothwell 15b8b572e1SStephen Rothwell /* Converged Location Code length */ 16b8b572e1SStephen Rothwell #define HVCS_CLC_LENGTH 79 17b8b572e1SStephen Rothwell 18b8b572e1SStephen Rothwell /** 19b8b572e1SStephen Rothwell * hvcs_partner_info - an element in a list of partner info 20b8b572e1SStephen Rothwell * @node: list_head denoting this partner_info struct's position in the list of 21b8b572e1SStephen Rothwell * partner info. 22b8b572e1SStephen Rothwell * @unit_address: The partner unit address of this entry. 23b8b572e1SStephen Rothwell * @partition_ID: The partner partition ID of this entry. 24b8b572e1SStephen Rothwell * @location_code: The converged location code of this entry + 1 char for the 25b8b572e1SStephen Rothwell * null-term. 26b8b572e1SStephen Rothwell * 27b8b572e1SStephen Rothwell * This structure outlines the format that partner info is presented to a caller 28b8b572e1SStephen Rothwell * of the hvcs partner info fetching functions. These are strung together into 29b8b572e1SStephen Rothwell * a list using linux kernel lists. 30b8b572e1SStephen Rothwell */ 31b8b572e1SStephen Rothwell struct hvcs_partner_info { 32b8b572e1SStephen Rothwell struct list_head node; 33b8b572e1SStephen Rothwell uint32_t unit_address; 34b8b572e1SStephen Rothwell uint32_t partition_ID; 35b8b572e1SStephen Rothwell char location_code[HVCS_CLC_LENGTH + 1]; /* CLC + 1 null-term char */ 36b8b572e1SStephen Rothwell }; 37b8b572e1SStephen Rothwell 38b8b572e1SStephen Rothwell extern int hvcs_free_partner_info(struct list_head *head); 39b8b572e1SStephen Rothwell extern int hvcs_get_partner_info(uint32_t unit_address, 40b8b572e1SStephen Rothwell struct list_head *head, unsigned long *pi_buff); 41b8b572e1SStephen Rothwell extern int hvcs_register_connection(uint32_t unit_address, 42b8b572e1SStephen Rothwell uint32_t p_partition_ID, uint32_t p_unit_address); 43b8b572e1SStephen Rothwell extern int hvcs_free_connection(uint32_t unit_address); 44b8b572e1SStephen Rothwell 45b8b572e1SStephen Rothwell #endif /* __KERNEL__ */ 46b8b572e1SStephen Rothwell #endif /* _PPC64_HVCSERVER_H */ 47