1 /* SPDX-License-Identifier: GPL-2.0-or-later */
4 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation
6 * LPAR console support.
9 #ifndef _PPC64_HVCONSOLE_H
10 #define _PPC64_HVCONSOLE_H
14 * PSeries firmware will only send/recv up to 16 bytes of character data per
17 #define MAX_VIO_PUT_CHARS 16
18 #define SIZE_VIO_GET_CHARS 16
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
24 extern ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count);
25 extern ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count);
27 /* Provided by HVC VIO */
28 void hvc_vio_init_early(void);
30 #endif /* __KERNEL__ */
31 #endif /* _PPC64_HVCONSOLE_H */