zcrypt_msgtype6.h 5.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * Copyright IBM Corp. 2001, 2012
  4. * Author(s): Robert Burroughs
  5. * Eric Rossman (edrossma@us.ibm.com)
  6. *
  7. * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
  8. * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
  9. * MSGTYPE restruct: Holger Dengler <hd@linux.vnet.ibm.com>
  10. */
  11. #ifndef _ZCRYPT_MSGTYPE6_H_
  12. #define _ZCRYPT_MSGTYPE6_H_
  13. #include <asm/zcrypt.h>
  14. #define MSGTYPE06_NAME "zcrypt_msgtype6"
  15. #define MSGTYPE06_VARIANT_DEFAULT 0
  16. #define MSGTYPE06_VARIANT_NORNG 1
  17. #define MSGTYPE06_VARIANT_EP11 2
  18. #define MSGTYPE06_MAX_MSG_SIZE (12*1024)
  19. /**
  20. * The type 6 message family is associated with CEXxC/CEXxP cards.
  21. *
  22. * It contains a message header followed by a CPRB, both of which
  23. * are described below.
  24. *
  25. * Note that all reserved fields must be zeroes.
  26. */
  27. struct type6_hdr {
  28. unsigned char reserved1; /* 0x00 */
  29. unsigned char type; /* 0x06 */
  30. unsigned char reserved2[2]; /* 0x0000 */
  31. unsigned char right[4]; /* 0x00000000 */
  32. unsigned char reserved3[2]; /* 0x0000 */
  33. unsigned char reserved4[2]; /* 0x0000 */
  34. unsigned char apfs[4]; /* 0x00000000 */
  35. unsigned int offset1; /* 0x00000058 (offset to CPRB) */
  36. unsigned int offset2; /* 0x00000000 */
  37. unsigned int offset3; /* 0x00000000 */
  38. unsigned int offset4; /* 0x00000000 */
  39. unsigned char agent_id[16]; /* 0x4341000000000000 */
  40. /* 0x0000000000000000 */
  41. unsigned char rqid[2]; /* rqid. internal to 603 */
  42. unsigned char reserved5[2]; /* 0x0000 */
  43. unsigned char function_code[2]; /* for PKD, 0x5044 (ascii 'PD') */
  44. unsigned char reserved6[2]; /* 0x0000 */
  45. unsigned int ToCardLen1; /* (request CPRB len + 3) & -4 */
  46. unsigned int ToCardLen2; /* db len 0x00000000 for PKD */
  47. unsigned int ToCardLen3; /* 0x00000000 */
  48. unsigned int ToCardLen4; /* 0x00000000 */
  49. unsigned int FromCardLen1; /* response buffer length */
  50. unsigned int FromCardLen2; /* db len 0x00000000 for PKD */
  51. unsigned int FromCardLen3; /* 0x00000000 */
  52. unsigned int FromCardLen4; /* 0x00000000 */
  53. } __packed;
  54. /**
  55. * The type 86 message family is associated with CEXxC/CEXxP cards.
  56. *
  57. * It contains a message header followed by a CPRB. The CPRB is
  58. * the same as the request CPRB, which is described above.
  59. *
  60. * If format is 1, an error condition exists and no data beyond
  61. * the 8-byte message header is of interest.
  62. *
  63. * The non-error message is shown below.
  64. *
  65. * Note that all reserved fields must be zeroes.
  66. */
  67. struct type86_hdr {
  68. unsigned char reserved1; /* 0x00 */
  69. unsigned char type; /* 0x86 */
  70. unsigned char format; /* 0x01 (error) or 0x02 (ok) */
  71. unsigned char reserved2; /* 0x00 */
  72. unsigned char reply_code; /* reply code (see above) */
  73. unsigned char reserved3[3]; /* 0x000000 */
  74. } __packed;
  75. #define TYPE86_RSP_CODE 0x86
  76. #define TYPE87_RSP_CODE 0x87
  77. #define TYPE86_FMT2 0x02
  78. struct type86_fmt2_ext {
  79. unsigned char reserved[4]; /* 0x00000000 */
  80. unsigned char apfs[4]; /* final status */
  81. unsigned int count1; /* length of CPRB + parameters */
  82. unsigned int offset1; /* offset to CPRB */
  83. unsigned int count2; /* 0x00000000 */
  84. unsigned int offset2; /* db offset 0x00000000 for PKD */
  85. unsigned int count3; /* 0x00000000 */
  86. unsigned int offset3; /* 0x00000000 */
  87. unsigned int count4; /* 0x00000000 */
  88. unsigned int offset4; /* 0x00000000 */
  89. } __packed;
  90. unsigned int get_cprb_fc(bool userspace, struct ica_xcRB *, struct ap_message *,
  91. unsigned int *, unsigned short **);
  92. unsigned int get_ep11cprb_fc(bool userspace, struct ep11_urb *, struct ap_message *,
  93. unsigned int *);
  94. unsigned int get_rng_fc(struct ap_message *, int *, unsigned int *);
  95. #define LOW 10
  96. #define MEDIUM 100
  97. #define HIGH 500
  98. int speed_idx_cca(int);
  99. int speed_idx_ep11(int);
  100. /**
  101. * Prepare a type6 CPRB message for random number generation
  102. *
  103. * @ap_dev: AP device pointer
  104. * @ap_msg: pointer to AP message
  105. */
  106. static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg,
  107. unsigned int random_number_length,
  108. unsigned int *domain)
  109. {
  110. struct {
  111. struct type6_hdr hdr;
  112. struct CPRBX cprbx;
  113. char function_code[2];
  114. short int rule_length;
  115. char rule[8];
  116. short int verb_length;
  117. short int key_length;
  118. } __packed * msg = ap_msg->msg;
  119. static struct type6_hdr static_type6_hdrX = {
  120. .type = 0x06,
  121. .offset1 = 0x00000058,
  122. .agent_id = {'C', 'A'},
  123. .function_code = {'R', 'L'},
  124. .ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
  125. .FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr),
  126. };
  127. static struct CPRBX local_cprbx = {
  128. .cprb_len = 0x00dc,
  129. .cprb_ver_id = 0x02,
  130. .func_id = {0x54, 0x32},
  131. .req_parml = sizeof(*msg) - sizeof(msg->hdr) -
  132. sizeof(msg->cprbx),
  133. .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr),
  134. };
  135. msg->hdr = static_type6_hdrX;
  136. msg->hdr.FromCardLen2 = random_number_length,
  137. msg->cprbx = local_cprbx;
  138. msg->cprbx.rpl_datal = random_number_length,
  139. memcpy(msg->function_code, msg->hdr.function_code, 0x02);
  140. msg->rule_length = 0x0a;
  141. memcpy(msg->rule, "RANDOM ", 8);
  142. msg->verb_length = 0x02;
  143. msg->key_length = 0x02;
  144. ap_msg->len = sizeof(*msg);
  145. *domain = (unsigned short)msg->cprbx.domain;
  146. }
  147. void zcrypt_msgtype6_init(void);
  148. void zcrypt_msgtype6_exit(void);
  149. #endif /* _ZCRYPT_MSGTYPE6_H_ */