drivers/crypto/bcm/util.h

   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