| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * hvconsole.h |
| 4 | * Copyright (C) 2004 Ryan S Arnold, IBM Corporation |
| 5 | * |
| 6 | * LPAR console support. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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 | */ |
| 24 | extern int hvc_get_chars(uint32_t vtermno, char *buf, int count); |
| 25 | extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count); |
| 26 | |
| 27 | #endif /* __KERNEL__ */ |
| 28 | #endif /* _PPC64_HVCONSOLE_H */ |