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  */
  44 struct 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
  51 extern int hvcs_free_partner_info(struct list_head *head);
  52 extern int hvcs_get_partner_info(uint32_t unit_address,
  53                 struct list_head *head, unsigned long *pi_buff);
  54 extern int hvcs_register_connection(uint32_t unit_address,
  55                 uint32_t p_partition_ID, uint32_t p_unit_address);
  56 extern int hvcs_free_connection(uint32_t unit_address);
  57
  58 #endif /* __KERNEL__ */
  59 #endif /* _PPC64_HVCSERVER_H */