1 /* 2 * hvconsole.h 3 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation 4 * 5 * LPAR console 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_HVCONSOLE_H 23 #define _PPC64_HVCONSOLE_H 24 #ifdef __KERNEL__ 25 26 /* 27 * PSeries firmware will only send/recv up to 16 bytes of character data per 28 * hcall. 29 */ 30 #define MAX_VIO_PUT_CHARS 16 31 #define SIZE_VIO_GET_CHARS 16 32 33 /* 34 * Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count' 35 * parm is included to conform to put_chars() function pointer template 36 */ 37 extern int hvc_get_chars(uint32_t vtermno, char *buf, int count); 38 extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count); 39 40 #endif /* __KERNEL__ */ 41 #endif /* _PPC64_HVCONSOLE_H */ 42