include/asm-ppc64/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
  25 #include <linux/list.h>
  26
  27 /* Converged Location Code length */
  28 #define HVCS_CLC_LENGTH 79
  29
  30 /**
  31  * hvcs_partner_info - an element in a list of partner info
  32  * @node: list_head denoting this partner_info struct's position in the list of
  33  *      partner info.
  34  * @unit_address: The partner unit address of this entry.
  35  * @partition_ID: The partner partition ID of this entry.
  36  * @location_code: The converged location code of this entry + 1 char for the
  37  *      null-term.
  38  *
  39  * This structure outlines the format that partner info is presented to a caller
  40  * of the hvcs partner info fetching functions.  These are strung together into
  41  * a list using linux kernel lists.
  42  */
  43 struct hvcs_partner_info {
  44         struct list_head node;
  45         uint32_t unit_address;
  46         uint32_t partition_ID;
  47         char location_code[HVCS_CLC_LENGTH + 1]; /* CLC + 1 null-term char */
  48 };
  49
  50 extern int hvcs_free_partner_info(struct list_head *head);
  51 extern int hvcs_get_partner_info(uint32_t unit_address,
  52                 struct list_head *head, unsigned long *pi_buff);
  53 extern int hvcs_register_connection(uint32_t unit_address,
  54                 uint32_t p_partition_ID, uint32_t p_unit_address);
  55 extern int hvcs_free_connection(uint32_t unit_address);
  56
  57 #endif /* _PPC64_HVCSERVER_H */