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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 */
43struct 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
50extern int hvcs_free_partner_info(struct list_head *head);
51extern int hvcs_get_partner_info(uint32_t unit_address,
52 struct list_head *head, unsigned long *pi_buff);
53extern int hvcs_register_connection(uint32_t unit_address,
54 uint32_t p_partition_ID, uint32_t p_unit_address);
55extern int hvcs_free_connection(uint32_t unit_address);
56
57#endif /* _PPC64_HVCSERVER_H */