drivers/crypto/caam/error.c

   1 /*
   2  * CAAM Error Reporting
   3  *
   4  * Copyright 2009-2011 Freescale Semiconductor, Inc.
   5  */
   6
   7 #include "compat.h"
   8 #include "regs.h"
   9 #include "intern.h"
  10 #include "desc.h"
  11 #include "jr.h"
  12 #include "error.h"
  13
  14 #define SPRINTFCAT(str, format, param, max_alloc)               \
  15 {                                                               \
  16         char *tmp;                                              \
  17                                                                 \
  18         tmp = kmalloc(sizeof(format) + max_alloc, GFP_ATOMIC);  \
  19         sprintf(tmp, format, param);                            \
  20         strcat(str, tmp);                                       \
  21         kfree(tmp);                                             \
  22 }
  23
  24 static void report_jump_idx(u32 status, char *outstr)
  25 {
  26         u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >>
  27                   JRSTA_DECOERR_INDEX_SHIFT;
  28
  29         if (status & JRSTA_DECOERR_JUMP)
  30                 strcat(outstr, "jump tgt desc idx ");
  31         else
  32                 strcat(outstr, "desc idx ");
  33
  34         SPRINTFCAT(outstr, "%d: ", idx, sizeof("255"));
  35 }
  36
  37 static void report_ccb_status(u32 status, char *outstr)
  38 {
  39         char *cha_id_list[] = {
  40                 "",
  41                 "AES",
  42                 "DES, 3DES",
  43                 "ARC4",
  44                 "MD5, SHA-1, SH-224, SHA-256, SHA-384, SHA-512",
  45                 "RNG",
  46                 "SNOW f8",
  47                 "Kasumi f8, f9",
  48                 "All Public Key Algorithms",
  49                 "CRC",
  50                 "SNOW f9",
  51         };
  52         char *err_id_list[] = {
  53                 "None. No error.",
  54                 "Mode error.",
  55                 "Data size error.",
  56                 "Key size error.",
  57                 "PKHA A memory size error.",
  58                 "PKHA B memory size error.",
  59                 "Data arrived out of sequence error.",
  60                 "PKHA divide-by-zero error.",
  61                 "PKHA modulus even error.",
  62                 "DES key parity error.",
  63                 "ICV check failed.",
  64                 "Hardware error.",
  65                 "Unsupported CCM AAD size.",
  66                 "Class 1 CHA is not reset",
  67                 "Invalid CHA combination was selected",
  68                 "Invalid CHA selected.",
  69         };
  70         u8 cha_id = (status & JRSTA_CCBERR_CHAID_MASK) >>
  71                     JRSTA_CCBERR_CHAID_SHIFT;
  72         u8 err_id = status & JRSTA_CCBERR_ERRID_MASK;
  73
  74         report_jump_idx(status, outstr);
  75
  76         if (cha_id < ARRAY_SIZE(cha_id_list)) {
  77                 SPRINTFCAT(outstr, "%s: ", cha_id_list[cha_id],
  78                            strlen(cha_id_list[cha_id]));
  79         } else {
  80                 SPRINTFCAT(outstr, "unidentified cha_id value 0x%02x: ",
  81                            cha_id, sizeof("ff"));
  82         }
  83
  84         if (err_id < ARRAY_SIZE(err_id_list)) {
  85                 SPRINTFCAT(outstr, "%s", err_id_list[err_id],
  86                            strlen(err_id_list[err_id]));
  87         } else {
  88                 SPRINTFCAT(outstr, "unidentified err_id value 0x%02x",
  89                            err_id, sizeof("ff"));
  90         }
  91 }
  92
  93 static void report_jump_status(u32 status, char *outstr)
  94 {
  95         SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
  96 }
  97
  98 static void report_deco_status(u32 status, char *outstr)
  99 {
 100         const struct {
 101                 u8 value;
 102                 char *error_text;
 103         } desc_error_list[] = {
 104                 { 0x00, "None. No error." },
 105                 { 0x01, "SGT Length Error. The descriptor is trying to read "
 106                         "more data than is contained in the SGT table." },
 107                 { 0x02, "Reserved." },
 108                 { 0x03, "Job Ring Control Error. There is a bad value in the "
 109                         "Job Ring Control register." },
 110                 { 0x04, "Invalid Descriptor Command. The Descriptor Command "
 111                         "field is invalid." },
 112                 { 0x05, "Reserved." },
 113                 { 0x06, "Invalid KEY Command" },
 114                 { 0x07, "Invalid LOAD Command" },
 115                 { 0x08, "Invalid STORE Command" },
 116                 { 0x09, "Invalid OPERATION Command" },
 117                 { 0x0A, "Invalid FIFO LOAD Command" },
 118                 { 0x0B, "Invalid FIFO STORE Command" },
 119                 { 0x0C, "Invalid MOVE Command" },
 120                 { 0x0D, "Invalid JUMP Command. A nonlocal JUMP Command is "
 121                         "invalid because the target is not a Job Header "
 122                         "Command, or the jump is from a Trusted Descriptor to "
 123                         "a Job Descriptor, or because the target Descriptor "
 124                         "contains a Shared Descriptor." },
 125                 { 0x0E, "Invalid MATH Command" },
 126                 { 0x0F, "Invalid SIGNATURE Command" },
 127                 { 0x10, "Invalid Sequence Command. A SEQ IN PTR OR SEQ OUT PTR "
 128                         "Command is invalid or a SEQ KEY, SEQ LOAD, SEQ FIFO "
 129                         "LOAD, or SEQ FIFO STORE decremented the input or "
 130                         "output sequence length below 0. This error may result "
 131                         "if a built-in PROTOCOL Command has encountered a "
 132                         "malformed PDU." },
 133                 { 0x11, "Skip data type invalid. The type must be 0xE or 0xF."},
 134                 { 0x12, "Shared Descriptor Header Error" },
 135                 { 0x13, "Header Error. Invalid length or parity, or certain "
 136                         "other problems." },
 137                 { 0x14, "Burster Error. Burster has gotten to an illegal "
 138                         "state" },
 139                 { 0x15, "Context Register Length Error. The descriptor is "
 140                         "trying to read or write past the end of the Context "
 141                         "Register. A SEQ LOAD or SEQ STORE with the VLF bit "
 142                         "set was executed with too large a length in the "
 143                         "variable length register (VSOL for SEQ STORE or VSIL "
 144                         "for SEQ LOAD)." },
 145                 { 0x16, "DMA Error" },
 146                 { 0x17, "Reserved." },
 147                 { 0x1A, "Job failed due to JR reset" },
 148                 { 0x1B, "Job failed due to Fail Mode" },
 149                 { 0x1C, "DECO Watchdog timer timeout error" },
 150                 { 0x1D, "DECO tried to copy a key from another DECO but the "
 151                         "other DECO's Key Registers were locked" },
 152                 { 0x1E, "DECO attempted to copy data from a DECO that had an "
 153                         "unmasked Descriptor error" },
 154                 { 0x1F, "LIODN error. DECO was trying to share from itself or "
 155                         "from another DECO but the two Non-SEQ LIODN values "
 156                         "didn't match or the 'shared from' DECO's Descriptor "
 157                         "required that the SEQ LIODNs be the same and they "
 158                         "aren't." },
 159                 { 0x20, "DECO has completed a reset initiated via the DRR "
 160                         "register" },
 161                 { 0x21, "Nonce error. When using EKT (CCM) key encryption "
 162                         "option in the FIFO STORE Command, the Nonce counter "
 163                         "reached its maximum value and this encryption mode "
 164                         "can no longer be used." },
 165                 { 0x22, "Meta data is too large (> 511 bytes) for TLS decap "
 166                         "(input frame; block ciphers) and IPsec decap (output "
 167                         "frame, when doing the next header byte update) and "
 168                         "DCRC (output frame)." },
 169                 { 0x80, "DNR (do not run) error" },
 170                 { 0x81, "undefined protocol command" },
 171                 { 0x82, "invalid setting in PDB" },
 172                 { 0x83, "Anti-replay LATE error" },
 173                 { 0x84, "Anti-replay REPLAY error" },
 174                 { 0x85, "Sequence number overflow" },
 175                 { 0x86, "Sigver invalid signature" },
 176                 { 0x87, "DSA Sign Illegal test descriptor" },
 177                 { 0x88, "Protocol Format Error - A protocol has seen an error "
 178                         "in the format of data received. When running RSA, "
 179                         "this means that formatting with random padding was "
 180                         "used, and did not follow the form: 0x00, 0x02, 8-to-N "
 181                         "bytes of non-zero pad, 0x00, F data." },
 182                 { 0x89, "Protocol Size Error - A protocol has seen an error in "
 183                         "size. When running RSA, pdb size N < (size of F) when "
 184                         "no formatting is used; or pdb size N < (F + 11) when "
 185                         "formatting is used." },
 186                 { 0xC1, "Blob Command error: Undefined mode" },
 187                 { 0xC2, "Blob Command error: Secure Memory Blob mode error" },
 188                 { 0xC4, "Blob Command error: Black Blob key or input size "
 189                         "error" },
 190                 { 0xC5, "Blob Command error: Invalid key destination" },
 191                 { 0xC8, "Blob Command error: Trusted/Secure mode error" },
 192                 { 0xF0, "IPsec TTL or hop limit field either came in as 0, "
 193                         "or was decremented to 0" },
 194                 { 0xF1, "3GPP HFN matches or exceeds the Threshold" },
 195         };
 196         u8 desc_error = status & JRSTA_DECOERR_ERROR_MASK;
 197         int i;
 198
 199         report_jump_idx(status, outstr);
 200
 201         for (i = 0; i < ARRAY_SIZE(desc_error_list); i++)
 202                 if (desc_error_list[i].value == desc_error)
 203                         break;
 204
 205         if (i != ARRAY_SIZE(desc_error_list) && desc_error_list[i].error_text) {
 206                 SPRINTFCAT(outstr, "%s", desc_error_list[i].error_text,
 207                            strlen(desc_error_list[i].error_text));
 208         } else {
 209                 SPRINTFCAT(outstr, "unidentified error value 0x%02x",
 210                            desc_error, sizeof("ff"));
 211         }
 212 }
 213
 214 static void report_jr_status(u32 status, char *outstr)
 215 {
 216         SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
 217 }
 218
 219 static void report_cond_code_status(u32 status, char *outstr)
 220 {
 221         SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
 222 }
 223
 224 char *caam_jr_strstatus(char *outstr, u32 status)
 225 {
 226         struct stat_src {
 227                 void (*report_ssed)(u32 status, char *outstr);
 228                 char *error;
 229         } status_src[] = {
 230                 { NULL, "No error" },
 231                 { NULL, NULL },
 232                 { report_ccb_status, "CCB" },
 233                 { report_jump_status, "Jump" },
 234                 { report_deco_status, "DECO" },
 235                 { NULL, NULL },
 236                 { report_jr_status, "Job Ring" },
 237                 { report_cond_code_status, "Condition Code" },
 238         };
 239         u32 ssrc = status >> JRSTA_SSRC_SHIFT;
 240
 241         sprintf(outstr, "%s: ", status_src[ssrc].error);
 242
 243         if (status_src[ssrc].report_ssed)
 244                 status_src[ssrc].report_ssed(status, outstr);
 245
 246         return outstr;
 247 }
 248 EXPORT_SYMBOL(caam_jr_strstatus);