LXR linux/arch/powerpc/include/asm/hvcserver.h

   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 */
  31struct 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
  38extern int hvcs_free_partner_info(struct list_head *head);
  39extern int hvcs_get_partner_info(uint32_t unit_address,
  40                struct list_head *head, unsigned long *pi_buff);
  41extern int hvcs_register_connection(uint32_t unit_address,
  42                uint32_t p_partition_ID, uint32_t p_unit_address);
  43extern int hvcs_free_connection(uint32_t unit_address);
  44
  45#endif /* __KERNEL__ */
  46#endif /* _PPC64_HVCSERVER_H */
  47