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 #define flow_log(...) do {} while (0) 62 #define flow_dump(msg, var, var_len) do {} while (0) 63 #define packet_log(...) do {} while (0) 64 #define packet_dump(msg, var, var_len) do {} while (0) 65 66 #define dump_sg(sg, skip, len) do {} while (0) 67 68 #endif /* DEBUG_ON */ 69 70 int spu_sg_at_offset(struct scatterlist *sg, unsigned int skip, 71 struct scatterlist **sge, unsigned int *sge_offset); 72 73 /* Copy sg data, from skip, length len, to dest */ 74 void sg_copy_part_to_buf(struct scatterlist *src, u8 *dest, 75 unsigned int len, unsigned int skip); 76 /* Copy src into scatterlist from offset, length len */ 77 void sg_copy_part_from_buf(struct scatterlist *dest, u8 *src, 78 unsigned int len, unsigned int skip); 79 80 int spu_sg_count(struct scatterlist *sg_list, unsigned int skip, int nbytes); 81 u32 spu_msg_sg_add(struct scatterlist **to_sg, 82 struct scatterlist **from_sg, u32 *skip, 83 u8 from_nents, u32 tot_len); 84 85 void add_to_ctr(u8 *ctr_pos, unsigned int increment); 86 87 /* produce a message digest from data of length n bytes */ 88 int do_shash(unsigned char *name, unsigned char *result, 89 const u8 *data1, unsigned int data1_len, 90 const u8 *data2, unsigned int data2_len, 91 const u8 *key, unsigned int key_len); 92 93 char *spu_alg_name(enum spu_cipher_alg alg, enum spu_cipher_mode mode); 94 95 void spu_setup_debugfs(void); 96 void spu_free_debugfs(void); 97 void format_value_ccm(unsigned int val, u8 *buf, u8 len); 98 99 #endif 100