LXR linux/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
  14extern int flow_debug_logging;
  15extern int packet_debug_logging;
  16extern 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
  55void __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
  61static inline void flow_log(const char *format, ...)
  62{
  63}
  64
  65static inline void flow_dump(const char *msg, const void *var, size_t var_len)
  66{
  67}
  68
  69static inline void packet_log(const char *format, ...)
  70{
  71}
  72
  73static inline void packet_dump(const char *msg, const void *var, size_t var_len)
  74{
  75}
  76
  77static inline void dump_sg(struct scatterlist *sg, unsigned int skip,
  78                           unsigned int len)
  79{
  80}
  81
  82#endif /* DEBUG_ON */
  83
  84int 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 */
  88void 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 */
  91void sg_copy_part_from_buf(struct scatterlist *dest, u8 *src,
  92                           unsigned int len, unsigned int skip);
  93
  94int spu_sg_count(struct scatterlist *sg_list, unsigned int skip, int nbytes);
  95u32 spu_msg_sg_add(struct scatterlist **to_sg,
  96                   struct scatterlist **from_sg, u32 *skip,
  97                   u8 from_nents, u32 tot_len);
  98
  99void add_to_ctr(u8 *ctr_pos, unsigned int increment);
 100
 101/* produce a message digest from data of length n bytes */
 102int 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
 107char *spu_alg_name(enum spu_cipher_alg alg, enum spu_cipher_mode mode);
 108
 109void spu_setup_debugfs(void);
 110void spu_free_debugfs(void);
 111void format_value_ccm(unsigned int val, u8 *buf, u8 len);
 112
 113#endif
 114