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

   1/*
   2 * hvcserver.h
   3 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation
   4 *
   5 * PPC64 virtual I/O console server support.
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  20 */
  21
  22#ifndef _PPC64_HVCSERVER_H
  23#define _PPC64_HVCSERVER_H
  24#ifdef __KERNEL__
  25
  26#include <linux/list.h>
  27
  28/* Converged Location Code length */
  29#define HVCS_CLC_LENGTH 79
  30
  31/**
  32 * hvcs_partner_info - an element in a list of partner info
  33 * @node: list_head denoting this partner_info struct's position in the list of
  34 *      partner info.
  35 * @unit_address: The partner unit address of this entry.
  36 * @partition_ID: The partner partition ID of this entry.
  37 * @location_code: The converged location code of this entry + 1 char for the
  38 *      null-term.
  39 *
  40 * This structure outlines the format that partner info is presented to a caller
  41 * of the hvcs partner info fetching functions.  These are strung together into
  42 * a list using linux kernel lists.
  43 */
  44struct hvcs_partner_info {
  45        struct list_head node;
  46        uint32_t unit_address;
  47        uint32_t partition_ID;
  48        char location_code[HVCS_CLC_LENGTH + 1]; /* CLC + 1 null-term char */
  49};
  50
  51extern int hvcs_free_partner_info(struct list_head *head);
  52extern int hvcs_get_partner_info(uint32_t unit_address,
  53                struct list_head *head, unsigned long *pi_buff);
  54extern int hvcs_register_connection(uint32_t unit_address,
  55                uint32_t p_partition_ID, uint32_t p_unit_address);
  56extern int hvcs_free_connection(uint32_t unit_address);
  57
  58#endif /* __KERNEL__ */
  59#endif /* _PPC64_HVCSERVER_H */
  60