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
flow_log(const char * format,...)61 static inline void flow_log(const char *format, ...)
62 {
63 }
64
flow_dump(const char * msg,const void * var,size_t var_len)65 static inline void flow_dump(const char *msg, const void *var, size_t var_len)
66 {
67 }
68
packet_log(const char * format,...)69 static inline void packet_log(const char *format, ...)
70 {
71 }
72
packet_dump(const char * msg,const void * var,size_t var_len)73 static inline void packet_dump(const char *msg, const void *var, size_t var_len)
74 {
75 }
76
dump_sg(struct scatterlist * sg,unsigned int skip,unsigned int len)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