crypto/bcm/util.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright 2016 Broadcom
0004  */
0005
0006 #ifndef _UTIL_H
0007 #define _UTIL_H
0008
0009 #include <linux/kernel.h>
0010 #include <linux/delay.h>
0011
0012 #include "spu.h"
0013
0014 extern int flow_debug_logging;
0015 extern int packet_debug_logging;
0016 extern int debug_logging_sleep;
0017
0018 #ifdef DEBUG
0019 #define flow_log(...)                   \
0020     do {                                  \
0021         if (flow_debug_logging) {           \
0022             printk(__VA_ARGS__);              \
0023             if (debug_logging_sleep)          \
0024                 msleep(debug_logging_sleep);    \
0025         }                                   \
0026     } while (0)
0027 #define flow_dump(msg, var, var_len)       \
0028     do {                                     \
0029         if (flow_debug_logging) {              \
0030             print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE,  \
0031                     16, 1, var, var_len, false); \
0032                 if (debug_logging_sleep)           \
0033                     msleep(debug_logging_sleep);   \
0034         }                                    \
0035     } while (0)
0036
0037 #define packet_log(...)               \
0038     do {                                \
0039         if (packet_debug_logging) {       \
0040             printk(__VA_ARGS__);            \
0041             if (debug_logging_sleep)        \
0042                 msleep(debug_logging_sleep);  \
0043         }                                 \
0044     } while (0)
0045 #define packet_dump(msg, var, var_len)   \
0046     do {                                   \
0047         if (packet_debug_logging) {          \
0048             print_hex_dump(KERN_ALERT, msg, DUMP_PREFIX_NONE,  \
0049                     16, 1, var, var_len, false); \
0050             if (debug_logging_sleep)           \
0051                 msleep(debug_logging_sleep);     \
0052         }                                    \
0053     } while (0)
0054
0055 void __dump_sg(struct scatterlist *sg, unsigned int skip, unsigned int len);
0056
0057 #define dump_sg(sg, skip, len)     __dump_sg(sg, skip, len)
0058
0059 #else /* !DEBUG_ON */
0060
0061 static inline void flow_log(const char *format, ...)
0062 {
0063 }
0064
0065 static inline void flow_dump(const char *msg, const void *var, size_t var_len)
0066 {
0067 }
0068
0069 static inline void packet_log(const char *format, ...)
0070 {
0071 }
0072
0073 static inline void packet_dump(const char *msg, const void *var, size_t var_len)
0074 {
0075 }
0076
0077 static inline void dump_sg(struct scatterlist *sg, unsigned int skip,
0078                unsigned int len)
0079 {
0080 }
0081
0082 #endif /* DEBUG_ON */
0083
0084 int spu_sg_at_offset(struct scatterlist *sg, unsigned int skip,
0085              struct scatterlist **sge, unsigned int *sge_offset);
0086
0087 /* Copy sg data, from skip, length len, to dest */
0088 void sg_copy_part_to_buf(struct scatterlist *src, u8 *dest,
0089              unsigned int len, unsigned int skip);
0090 /* Copy src into scatterlist from offset, length len */
0091 void sg_copy_part_from_buf(struct scatterlist *dest, u8 *src,
0092                unsigned int len, unsigned int skip);
0093
0094 int spu_sg_count(struct scatterlist *sg_list, unsigned int skip, int nbytes);
0095 u32 spu_msg_sg_add(struct scatterlist **to_sg,
0096            struct scatterlist **from_sg, u32 *skip,
0097            u8 from_nents, u32 tot_len);
0098
0099 void add_to_ctr(u8 *ctr_pos, unsigned int increment);
0100
0101 /* produce a message digest from data of length n bytes */
0102 int do_shash(unsigned char *name, unsigned char *result,
0103          const u8 *data1, unsigned int data1_len,
0104          const u8 *data2, unsigned int data2_len,
0105          const u8 *key, unsigned int key_len);
0106
0107 char *spu_alg_name(enum spu_cipher_alg alg, enum spu_cipher_mode mode);
0108
0109 void spu_setup_debugfs(void);
0110 void spu_free_debugfs(void);
0111 void format_value_ccm(unsigned int val, u8 *buf, u8 len);
0112
0113 #endif