developer | 8d16ac2 | 2021-05-26 15:32:12 +0800 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. |
| 4 | * |
| 5 | * OS-dependent definitions for NAND Mapped-block Management (NMBM) |
| 6 | * |
| 7 | * Author: Weijie Gao <weijie.gao@mediatek.com> |
| 8 | */ |
| 9 | |
| 10 | #ifndef _NMBM_OS_H_ |
| 11 | #define _NMBM_OS_H_ |
| 12 | |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/limits.h> |
| 15 | #include <linux/string.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/types.h> |
| 18 | #include <linux/crc32.h> |
| 19 | #include <linux/log2.h> |
| 20 | #include <asm/div64.h> |
| 21 | |
| 22 | static inline uint32_t nmbm_crc32(uint32_t crcval, const void *buf, size_t size) |
| 23 | { |
| 24 | uint chksz; |
| 25 | const unsigned char *p = buf; |
| 26 | |
| 27 | while (size) { |
| 28 | if (size > UINT_MAX) |
| 29 | chksz = UINT_MAX; |
| 30 | else |
| 31 | chksz = (uint)size; |
| 32 | |
| 33 | crcval = crc32_le(crcval, p, chksz); |
| 34 | size -= chksz; |
| 35 | p += chksz; |
| 36 | } |
| 37 | |
| 38 | return crcval; |
| 39 | } |
| 40 | |
| 41 | static inline uint32_t nmbm_lldiv(uint64_t dividend, uint32_t divisor) |
| 42 | { |
| 43 | #if BITS_PER_LONG == 64 |
| 44 | return dividend / divisor; |
| 45 | #else |
| 46 | do_div(dividend, divisor); |
| 47 | return dividend; |
| 48 | #endif |
| 49 | } |
| 50 | |
| 51 | #define WATCHDOG_RESET() |
| 52 | |
| 53 | #ifdef CONFIG_NMBM_LOG_LEVEL_DEBUG |
| 54 | #define NMBM_DEFAULT_LOG_LEVEL 0 |
| 55 | #elif defined(NMBM_LOG_LEVEL_INFO) |
| 56 | #define NMBM_DEFAULT_LOG_LEVEL 1 |
| 57 | #elif defined(NMBM_LOG_LEVEL_WARN) |
| 58 | #define NMBM_DEFAULT_LOG_LEVEL 2 |
| 59 | #elif defined(NMBM_LOG_LEVEL_ERR) |
| 60 | #define NMBM_DEFAULT_LOG_LEVEL 3 |
| 61 | #elif defined(NMBM_LOG_LEVEL_EMERG) |
| 62 | #define NMBM_DEFAULT_LOG_LEVEL 4 |
| 63 | #elif defined(NMBM_LOG_LEVEL_NONE) |
| 64 | #define NMBM_DEFAULT_LOG_LEVEL 5 |
| 65 | #else |
| 66 | #define NMBM_DEFAULT_LOG_LEVEL 1 |
| 67 | #endif |
| 68 | |
| 69 | #endif /* _NMBM_OS_H_ */ |