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 */
60