1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2016 Broadcom 4 */ 5 6 #ifndef _UTIL_H 7 #define _UTIL_H 8 9 #include <linux/kernel.h> 10 #include <linux/delay.h> 11 12 #include "spu.h" 13 14 extern int flow_debug_logging; 15 extern int packet_debug_logging; 16 extern int debug_logging_sleep; 17 18 #ifdef DEBUG 19 #define flow_log(...) \ 20 do { \ 21 if (flow_debug_logging) { \ 22 printk(__VA_ARGS__); \ 23 if (debug_logging_sleep) \ 24 msleep(debug_logging_sleep); \ 25 } \ 26 } while (0) 27 #define flow_dump(msg, var, var_len) \ 28 do { \ 29 if (flow_debug_logging) { \ 30 print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE, \ 31 16, 1, var, var_len, false); \ 32 if (debug_logging_sleep) \ 33 msleep(debug_logging_sleep); \ 34 } \ 35 } while (0) 36 37 #define packet_log(...) \ 38 do { \ 39 if (packet_debug_logging) { \ 40 printk(__VA_ARGS__); \ 41 if (debug_logging_sleep) \ 42 msleep(debug_logging_sleep); \ 43 } \ 44 } while (0) 45 #define packet_dump(msg, var, var_len) \ 46 do { \ 47 if (packet_debug_logging) { \ 48 print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE, \ 49 16, 1, var, var_len, false); \ 50 if (debug_logging_sleep) \ 51 msleep(debug_logging_sleep); \ 52 } \ 53 } while (0) 54 55 void __dump_sg(struct scatterlist *sg, unsigned int skip, unsigned int len); 56 57 #define dump_sg(sg, skip, len) __dump_sg(sg, skip, len) 58 59 #else /* !DEBUG_ON */ 60 61 static inline void flow_log(const char *format, ...) 62 { 63 } 64 65 static inline void flow_dump(const char *msg, const void *var, size_t var_len) 66 { 67 } 68 69 static inline void packet_log(const char *format, ...) 70 { 71 } 72 73 static inline void packet_dump(const char *msg, const void *var, size_t var_len) 74 { 75 } 76 77 static inline void dump_sg(struct scatterlist *sg, unsigned int skip, 78 unsigned int len) 79 { 80 } 81 82 #endif /* DEBUG_ON */ 83 84 int spu_sg_at_offset(struct scatterlist *sg, unsigned int skip, 85 struct scatterlist **sge, unsigned int *sge_offset); 86 87 /* Copy sg data, from skip, length len, to dest */ 88 void sg_copy_part_to_buf(struct scatterlist *src, u8 *dest, 89 unsigned int len, unsigned int skip); 90 /* Copy src into scatterlist from offset, length len */ 91 void sg_copy_part_from_buf(struct scatterlist *dest, u8 *src, 92 unsigned int len, unsigned int skip); 93 94 int spu_sg_count(struct scatterlist *sg_list, unsigned int skip, int nbytes); 95 u32 spu_msg_sg_add(struct scatterlist **to_sg, 96 struct scatterlist **from_sg, u32 *skip, 97 u8 from_nents, u32 tot_len); 98 99 void add_to_ctr(u8 *ctr_pos, unsigned int increment); 100 101 /* produce a message digest from data of length n bytes */ 102 int do_shash(unsigned char *name, unsigned char *result, 103 const u8 *data1, unsigned int data1_len, 104 const u8 *data2, unsigned int data2_len, 105 const u8 *key, unsigned int key_len); 106 107 char *spu_alg_name(enum spu_cipher_alg alg, enum spu_cipher_mode mode); 108 109 void spu_setup_debugfs(void); 110 void spu_free_debugfs(void); 111 void format_value_ccm(unsigned int val, u8 *buf, u8 len); 112 113 #endif 114