wdenk | 56f94be | 2002-11-05 16:35:14 +0000 | [diff] [blame] | 1 | /* |
Igor Lisitsin | 93470f2 | 2007-04-18 14:55:19 +0400 | [diff] [blame] | 2 | * (C) Copyright 2002-2007 |
wdenk | 56f94be | 2002-11-05 16:35:14 +0000 | [diff] [blame] | 3 | * Detlev Zundel, dzu@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | #ifndef _LOGBUFF_H |
| 24 | #define _LOGBUFF_H |
| 25 | |
| 26 | #ifdef CONFIG_LOGBUFFER |
| 27 | |
Igor Lisitsin | 93470f2 | 2007-04-18 14:55:19 +0400 | [diff] [blame] | 28 | #define LOGBUFF_MAGIC 0xc0de4ced /* Forced by code, eh! */ |
wdenk | 9dfa8d1 | 2002-12-08 09:53:23 +0000 | [diff] [blame] | 29 | #define LOGBUFF_LEN (16384) /* Must be 16k right now */ |
| 30 | #define LOGBUFF_MASK (LOGBUFF_LEN-1) |
| 31 | #define LOGBUFF_OVERHEAD (4096) /* Logbuffer overhead for extra info */ |
| 32 | #define LOGBUFF_RESERVE (LOGBUFF_LEN+LOGBUFF_OVERHEAD) |
| 33 | |
Igor Lisitsin | 93470f2 | 2007-04-18 14:55:19 +0400 | [diff] [blame] | 34 | /* The mapping used here has to be the same as in setup_ext_logbuff () |
| 35 | in linux/kernel/printk */ |
| 36 | |
| 37 | typedef struct { |
| 38 | union { |
| 39 | struct { |
| 40 | unsigned long tag; |
| 41 | unsigned long start; |
| 42 | unsigned long con; |
| 43 | unsigned long end; |
| 44 | unsigned long chars; |
| 45 | } v2; |
| 46 | struct { |
| 47 | unsigned long dummy; |
| 48 | unsigned long tag; |
| 49 | unsigned long start; |
| 50 | unsigned long size; |
| 51 | unsigned long chars; |
| 52 | } v1; |
| 53 | }; |
| 54 | unsigned char buf[0]; |
| 55 | } logbuff_t; |
| 56 | |
wdenk | 56f94be | 2002-11-05 16:35:14 +0000 | [diff] [blame] | 57 | int drv_logbuff_init (void); |
wdenk | 9dfa8d1 | 2002-12-08 09:53:23 +0000 | [diff] [blame] | 58 | void logbuff_init_ptrs (void); |
wdenk | 56f94be | 2002-11-05 16:35:14 +0000 | [diff] [blame] | 59 | void logbuff_log(char *msg); |
| 60 | void logbuff_reset (void); |
Marian Balakowicz | 902ce70 | 2008-05-13 15:53:29 +0200 | [diff] [blame] | 61 | unsigned long logbuffer_base (void); |
wdenk | 56f94be | 2002-11-05 16:35:14 +0000 | [diff] [blame] | 62 | |
| 63 | #endif /* CONFIG_LOGBUFFER */ |
| 64 | |
| 65 | #endif /* _LOGBUFF_H */ |