| 1 | /* |
| 2 | * Copyright (C) 2010 Marco Stornelli <marco.stornelli@gmail.com> |
| 3 | * Copyright (C) 2011 Kees Cook <keescook@chromium.org> |
| 4 | * Copyright (C) 2011 Google, Inc. |
| 5 | * |
| 6 | * This software is licensed under the terms of the GNU General Public |
| 7 | * License version 2, as published by the Free Software Foundation, and |
| 8 | * may be copied, distributed, and modified under those terms. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #ifndef __LINUX_PSTORE_RAM_H__ |
| 18 | #define __LINUX_PSTORE_RAM_H__ |
| 19 | |
| 20 | #include <linux/device.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/list.h> |
| 23 | #include <linux/types.h> |
| 24 | #include <linux/init.h> |
| 25 | |
| 26 | struct persistent_ram_buffer; |
| 27 | struct rs_control; |
| 28 | |
| 29 | struct persistent_ram_ecc_info { |
| 30 | int block_size; |
| 31 | int ecc_size; |
| 32 | int symsize; |
| 33 | int poly; |
| 34 | }; |
| 35 | |
| 36 | struct persistent_ram_zone { |
| 37 | phys_addr_t paddr; |
| 38 | size_t size; |
| 39 | void *vaddr; |
| 40 | struct persistent_ram_buffer *buffer; |
| 41 | size_t buffer_size; |
| 42 | |
| 43 | /* ECC correction */ |
| 44 | char *par_buffer; |
| 45 | char *par_header; |
| 46 | struct rs_control *rs_decoder; |
| 47 | int corrected_bytes; |
| 48 | int bad_blocks; |
| 49 | struct persistent_ram_ecc_info ecc_info; |
| 50 | |
| 51 | char *old_log; |
| 52 | size_t old_log_size; |
| 53 | }; |
| 54 | |
| 55 | struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, |
| 56 | u32 sig, struct persistent_ram_ecc_info *ecc_info, |
| 57 | unsigned int memtype); |
| 58 | void persistent_ram_free(struct persistent_ram_zone *prz); |
| 59 | void persistent_ram_zap(struct persistent_ram_zone *prz); |
| 60 | |
| 61 | int persistent_ram_write(struct persistent_ram_zone *prz, const void *s, |
| 62 | unsigned int count); |
| 63 | |
| 64 | void persistent_ram_save_old(struct persistent_ram_zone *prz); |
| 65 | size_t persistent_ram_old_size(struct persistent_ram_zone *prz); |
| 66 | void *persistent_ram_old(struct persistent_ram_zone *prz); |
| 67 | void persistent_ram_free_old(struct persistent_ram_zone *prz); |
| 68 | ssize_t persistent_ram_ecc_string(struct persistent_ram_zone *prz, |
| 69 | char *str, size_t len); |
| 70 | |
| 71 | /* |
| 72 | * Ramoops platform data |
| 73 | * @mem_size memory size for ramoops |
| 74 | * @mem_address physical memory address to contain ramoops |
| 75 | */ |
| 76 | |
| 77 | struct ramoops_platform_data { |
| 78 | unsigned long mem_size; |
| 79 | phys_addr_t mem_address; |
| 80 | unsigned int mem_type; |
| 81 | unsigned long record_size; |
| 82 | unsigned long console_size; |
| 83 | unsigned long ftrace_size; |
| 84 | unsigned long pmsg_size; |
| 85 | int dump_oops; |
| 86 | struct persistent_ram_ecc_info ecc_info; |
| 87 | }; |
| 88 | |
| 89 | #endif |