hvconsole.h (790B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * hvconsole.h 4 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation 5 * 6 * LPAR console support. 7 */ 8 9#ifndef _PPC64_HVCONSOLE_H 10#define _PPC64_HVCONSOLE_H 11#ifdef __KERNEL__ 12 13/* 14 * PSeries firmware will only send/recv up to 16 bytes of character data per 15 * hcall. 16 */ 17#define MAX_VIO_PUT_CHARS 16 18#define SIZE_VIO_GET_CHARS 16 19 20/* 21 * Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count' 22 * parm is included to conform to put_chars() function pointer template 23 */ 24extern int hvc_get_chars(uint32_t vtermno, char *buf, int count); 25extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count); 26 27/* Provided by HVC VIO */ 28void hvc_vio_init_early(void); 29 30#endif /* __KERNEL__ */ 31#endif /* _PPC64_HVCONSOLE_H */