arch/mips/cavium-octeon/crypto/octeon-crypto.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License. See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012-2013 Cavium Inc., All Rights Reserved.
   7  *
   8  * MD5/SHA1/SHA256/SHA512 instruction definitions added by
   9  * Aaro Koskinen <aaro.koskinen@iki.fi>.
  10  *
  11  */
  12 #ifndef __LINUX_OCTEON_CRYPTO_H
  13 #define __LINUX_OCTEON_CRYPTO_H
  14
  15 #include <linux/sched.h>
  16 #include <asm/mipsregs.h>
  17
  18 #define OCTEON_CR_OPCODE_PRIORITY 300
  19
  20 extern unsigned long octeon_crypto_enable(struct octeon_cop2_state *state);
  21 extern void octeon_crypto_disable(struct octeon_cop2_state *state,
  22                                   unsigned long flags);
  23
  24 /*
  25  * Macros needed to implement MD5/SHA1/SHA256:
  26  */
  27
  28 /*
  29  * The index can be 0-1 (MD5) or 0-2 (SHA1), 0-3 (SHA256).
  30  */
  31 #define write_octeon_64bit_hash_dword(value, index)     \
  32 do {                                                    \
  33         __asm__ __volatile__ (                          \
  34         "dmtc2 %[rt],0x0048+" STR(index)                \
  35         :                                               \
  36         : [rt] "d" (cpu_to_be64(value)));               \
  37 } while (0)
  38
  39 /*
  40  * The index can be 0-1 (MD5) or 0-2 (SHA1), 0-3 (SHA256).
  41  */
  42 #define read_octeon_64bit_hash_dword(index)             \
  43 ({                                                      \
  44         u64 __value;                                    \
  45                                                         \
  46         __asm__ __volatile__ (                          \
  47         "dmfc2 %[rt],0x0048+" STR(index)                \
  48         : [rt] "=d" (__value)                           \
  49         : );                                            \
  50                                                         \
  51         be64_to_cpu(__value);                           \
  52 })
  53
  54 /*
  55  * The index can be 0-6.
  56  */
  57 #define write_octeon_64bit_block_dword(value, index)    \
  58 do {                                                    \
  59         __asm__ __volatile__ (                          \
  60         "dmtc2 %[rt],0x0040+" STR(index)                \
  61         :                                               \
  62         : [rt] "d" (cpu_to_be64(value)));               \
  63 } while (0)
  64
  65 /*
  66  * The value is the final block dword (64-bit).
  67  */
  68 #define octeon_md5_start(value)                         \
  69 do {                                                    \
  70         __asm__ __volatile__ (                          \
  71         "dmtc2 %[rt],0x4047"                            \
  72         :                                               \
  73         : [rt] "d" (cpu_to_be64(value)));               \
  74 } while (0)
  75
  76 /*
  77  * The value is the final block dword (64-bit).
  78  */
  79 #define octeon_sha1_start(value)                        \
  80 do {                                                    \
  81         __asm__ __volatile__ (                          \
  82         "dmtc2 %[rt],0x4057"                            \
  83         :                                               \
  84         : [rt] "d" (value));                            \
  85 } while (0)
  86
  87 /*
  88  * The value is the final block dword (64-bit).
  89  */
  90 #define octeon_sha256_start(value)                      \
  91 do {                                                    \
  92         __asm__ __volatile__ (                          \
  93         "dmtc2 %[rt],0x404f"                            \
  94         :                                               \
  95         : [rt] "d" (value));                            \
  96 } while (0)
  97
  98 /*
  99  * Macros needed to implement SHA512:
 100  */
 101
 102 /*
 103  * The index can be 0-7.
 104  */
 105 #define write_octeon_64bit_hash_sha512(value, index)    \
 106 do {                                                    \
 107         __asm__ __volatile__ (                          \
 108         "dmtc2 %[rt],0x0250+" STR(index)                \
 109         :                                               \
 110         : [rt] "d" (value));                            \
 111 } while (0)
 112
 113 /*
 114  * The index can be 0-7.
 115  */
 116 #define read_octeon_64bit_hash_sha512(index)            \
 117 ({                                                      \
 118         u64 __value;                                    \
 119                                                         \
 120         __asm__ __volatile__ (                          \
 121         "dmfc2 %[rt],0x0250+" STR(index)                \
 122         : [rt] "=d" (__value)                           \
 123         : );                                            \
 124                                                         \
 125         __value;                                        \
 126 })
 127
 128 /*
 129  * The index can be 0-14.
 130  */
 131 #define write_octeon_64bit_block_sha512(value, index)   \
 132 do {                                                    \
 133         __asm__ __volatile__ (                          \
 134         "dmtc2 %[rt],0x0240+" STR(index)                \
 135         :                                               \
 136         : [rt] "d" (value));                            \
 137 } while (0)
 138
 139 /*
 140  * The value is the final block word (64-bit).
 141  */
 142 #define octeon_sha512_start(value)                      \
 143 do {                                                    \
 144         __asm__ __volatile__ (                          \
 145         "dmtc2 %[rt],0x424f"                            \
 146         :                                               \
 147         : [rt] "d" (value));                            \
 148 } while (0)
 149
 150 #endif /* __LINUX_OCTEON_CRYPTO_H */