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 "desc.h"
  10 #include "error.h"
  11
  12 #ifdef DEBUG
  13 #include <linux/highmem.h>
  14
  15 void caam_dump_sg(const char *level, const char *prefix_str, int prefix_type,
  16                   int rowsize, int groupsize, struct scatterlist *sg,
  17                   size_t tlen, bool ascii)
  18 {
  19         struct scatterlist *it;
  20         void *it_page;
  21         size_t len;
  22         void *buf;
  23
  24         for (it = sg; it && tlen > 0 ; it = sg_next(sg)) {
  25                 /*
  26                  * make sure the scatterlist's page
  27                  * has a valid virtual memory mapping
  28                  */
  29                 it_page = kmap_atomic(sg_page(it));
  30                 if (unlikely(!it_page)) {
  31                         pr_err("caam_dump_sg: kmap failed\n");
  32                         return;
  33                 }
  34
  35                 buf = it_page + it->offset;
  36                 len = min_t(size_t, tlen, it->length);
  37                 print_hex_dump(level, prefix_str, prefix_type, rowsize,
  38                                groupsize, buf, len, ascii);
  39                 tlen -= len;
  40
  41                 kunmap_atomic(it_page);
  42         }
  43 }
  44 #else
  45 void caam_dump_sg(const char *level, const char *prefix_str, int prefix_type,
  46                   int rowsize, int groupsize, struct scatterlist *sg,
  47                   size_t tlen, bool ascii)
  48 {}
  49 #endif /* DEBUG */
  50 EXPORT_SYMBOL(caam_dump_sg);
  51
  52 static const struct {
  53         u8 value;
  54         const char *error_text;
  55 } desc_error_list[] = {
  56         { 0x00, "No error." },
  57         { 0x01, "SGT Length Error. The descriptor is trying to read more data than is contained in the SGT table." },
  58         { 0x02, "SGT Null Entry Error." },
  59         { 0x03, "Job Ring Control Error. There is a bad value in the Job Ring Control register." },
  60         { 0x04, "Invalid Descriptor Command. The Descriptor Command field is invalid." },
  61         { 0x05, "Reserved." },
  62         { 0x06, "Invalid KEY Command" },
  63         { 0x07, "Invalid LOAD Command" },
  64         { 0x08, "Invalid STORE Command" },
  65         { 0x09, "Invalid OPERATION Command" },
  66         { 0x0A, "Invalid FIFO LOAD Command" },
  67         { 0x0B, "Invalid FIFO STORE Command" },
  68         { 0x0C, "Invalid MOVE/MOVE_LEN Command" },
  69         { 0x0D, "Invalid JUMP Command. A nonlocal JUMP Command is invalid because the target is not a Job Header Command, or the jump is from a Trusted Descriptor to a Job Descriptor, or because the target Descriptor contains a Shared Descriptor." },
  70         { 0x0E, "Invalid MATH Command" },
  71         { 0x0F, "Invalid SIGNATURE Command" },
  72         { 0x10, "Invalid Sequence Command. A SEQ IN PTR OR SEQ OUT PTR Command is invalid or a SEQ KEY, SEQ LOAD, SEQ FIFO LOAD, or SEQ FIFO STORE decremented the input or output sequence length below 0. This error may result if a built-in PROTOCOL Command has encountered a malformed PDU." },
  73         { 0x11, "Skip data type invalid. The type must be 0xE or 0xF."},
  74         { 0x12, "Shared Descriptor Header Error" },
  75         { 0x13, "Header Error. Invalid length or parity, or certain other problems." },
  76         { 0x14, "Burster Error. Burster has gotten to an illegal state" },
  77         { 0x15, "Context Register Length Error. The descriptor is trying to read or write past the end of the Context Register. A SEQ LOAD or SEQ STORE with the VLF bit set was executed with too large a length in the variable length register (VSOL for SEQ STORE or VSIL for SEQ LOAD)." },
  78         { 0x16, "DMA Error" },
  79         { 0x17, "Reserved." },
  80         { 0x1A, "Job failed due to JR reset" },
  81         { 0x1B, "Job failed due to Fail Mode" },
  82         { 0x1C, "DECO Watchdog timer timeout error" },
  83         { 0x1D, "DECO tried to copy a key from another DECO but the other DECO's Key Registers were locked" },
  84         { 0x1E, "DECO attempted to copy data from a DECO that had an unmasked Descriptor error" },
  85         { 0x1F, "LIODN error. DECO was trying to share from itself or from another DECO but the two Non-SEQ LIODN values didn't match or the 'shared from' DECO's Descriptor required that the SEQ LIODNs be the same and they aren't." },
  86         { 0x20, "DECO has completed a reset initiated via the DRR register" },
  87         { 0x21, "Nonce error. When using EKT (CCM) key encryption option in the FIFO STORE Command, the Nonce counter reached its maximum value and this encryption mode can no longer be used." },
  88         { 0x22, "Meta data is too large (> 511 bytes) for TLS decap (input frame; block ciphers) and IPsec decap (output frame, when doing the next header byte update) and DCRC (output frame)." },
  89         { 0x23, "Read Input Frame error" },
  90         { 0x24, "JDKEK, TDKEK or TDSK not loaded error" },
  91         { 0x80, "DNR (do not run) error" },
  92         { 0x81, "undefined protocol command" },
  93         { 0x82, "invalid setting in PDB" },
  94         { 0x83, "Anti-replay LATE error" },
  95         { 0x84, "Anti-replay REPLAY error" },
  96         { 0x85, "Sequence number overflow" },
  97         { 0x86, "Sigver invalid signature" },
  98         { 0x87, "DSA Sign Illegal test descriptor" },
  99         { 0x88, "Protocol Format Error - A protocol has seen an error in the format of data received. When running RSA, this means that formatting with random padding was used, and did not follow the form: 0x00, 0x02, 8-to-N bytes of non-zero pad, 0x00, F data." },
 100         { 0x89, "Protocol Size Error - A protocol has seen an error in size. When running RSA, pdb size N < (size of F) when no formatting is used; or pdb size N < (F + 11) when formatting is used." },
 101         { 0xC1, "Blob Command error: Undefined mode" },
 102         { 0xC2, "Blob Command error: Secure Memory Blob mode error" },
 103         { 0xC4, "Blob Command error: Black Blob key or input size error" },
 104         { 0xC5, "Blob Command error: Invalid key destination" },
 105         { 0xC8, "Blob Command error: Trusted/Secure mode error" },
 106         { 0xF0, "IPsec TTL or hop limit field either came in as 0, or was decremented to 0" },
 107         { 0xF1, "3GPP HFN matches or exceeds the Threshold" },
 108 };
 109
 110 static const char * const cha_id_list[] = {
 111         "",
 112         "AES",
 113         "DES",
 114         "ARC4",
 115         "MDHA",
 116         "RNG",
 117         "SNOW f8",
 118         "Kasumi f8/9",
 119         "PKHA",
 120         "CRCA",
 121         "SNOW f9",
 122         "ZUCE",
 123         "ZUCA",
 124 };
 125
 126 static const char * const err_id_list[] = {
 127         "No error.",
 128         "Mode error.",
 129         "Data size error.",
 130         "Key size error.",
 131         "PKHA A memory size error.",
 132         "PKHA B memory size error.",
 133         "Data arrived out of sequence error.",
 134         "PKHA divide-by-zero error.",
 135         "PKHA modulus even error.",
 136         "DES key parity error.",
 137         "ICV check failed.",
 138         "Hardware error.",
 139         "Unsupported CCM AAD size.",
 140         "Class 1 CHA is not reset",
 141         "Invalid CHA combination was selected",
 142         "Invalid CHA selected.",
 143 };
 144
 145 static const char * const rng_err_id_list[] = {
 146         "",
 147         "",
 148         "",
 149         "Instantiate",
 150         "Not instantiated",
 151         "Test instantiate",
 152         "Prediction resistance",
 153         "Prediction resistance and test request",
 154         "Uninstantiate",
 155         "Secure key generation",
 156 };
 157
 158 static void report_ccb_status(struct device *jrdev, const u32 status,
 159                               const char *error)
 160 {
 161         u8 cha_id = (status & JRSTA_CCBERR_CHAID_MASK) >>
 162                     JRSTA_CCBERR_CHAID_SHIFT;
 163         u8 err_id = status & JRSTA_CCBERR_ERRID_MASK;
 164         u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >>
 165                   JRSTA_DECOERR_INDEX_SHIFT;
 166         char *idx_str;
 167         const char *cha_str = "unidentified cha_id value 0x";
 168         char cha_err_code[3] = { 0 };
 169         const char *err_str = "unidentified err_id value 0x";
 170         char err_err_code[3] = { 0 };
 171
 172         if (status & JRSTA_DECOERR_JUMP)
 173                 idx_str = "jump tgt desc idx";
 174         else
 175                 idx_str = "desc idx";
 176
 177         if (cha_id < ARRAY_SIZE(cha_id_list))
 178                 cha_str = cha_id_list[cha_id];
 179         else
 180                 snprintf(cha_err_code, sizeof(cha_err_code), "%02x", cha_id);
 181
 182         if ((cha_id << JRSTA_CCBERR_CHAID_SHIFT) == JRSTA_CCBERR_CHAID_RNG &&
 183             err_id < ARRAY_SIZE(rng_err_id_list) &&
 184             strlen(rng_err_id_list[err_id])) {
 185                 /* RNG-only error */
 186                 err_str = rng_err_id_list[err_id];
 187         } else {
 188                 err_str = err_id_list[err_id];
 189         }
 190
 191         /*
 192          * CCB ICV check failures are part of normal operation life;
 193          * we leave the upper layers to do what they want with them.
 194          */
 195         if (err_id != JRSTA_CCBERR_ERRID_ICVCHK)
 196                 dev_err(jrdev, "%08x: %s: %s %d: %s%s: %s%s\n",
 197                         status, error, idx_str, idx,
 198                         cha_str, cha_err_code,
 199                         err_str, err_err_code);
 200 }
 201
 202 static void report_jump_status(struct device *jrdev, const u32 status,
 203                                const char *error)
 204 {
 205         dev_err(jrdev, "%08x: %s: %s() not implemented\n",
 206                 status, error, __func__);
 207 }
 208
 209 static void report_deco_status(struct device *jrdev, const u32 status,
 210                                const char *error)
 211 {
 212         u8 err_id = status & JRSTA_DECOERR_ERROR_MASK;
 213         u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >>
 214                   JRSTA_DECOERR_INDEX_SHIFT;
 215         char *idx_str;
 216         const char *err_str = "unidentified error value 0x";
 217         char err_err_code[3] = { 0 };
 218         int i;
 219
 220         if (status & JRSTA_DECOERR_JUMP)
 221                 idx_str = "jump tgt desc idx";
 222         else
 223                 idx_str = "desc idx";
 224
 225         for (i = 0; i < ARRAY_SIZE(desc_error_list); i++)
 226                 if (desc_error_list[i].value == err_id)
 227                         break;
 228
 229         if (i != ARRAY_SIZE(desc_error_list) && desc_error_list[i].error_text)
 230                 err_str = desc_error_list[i].error_text;
 231         else
 232                 snprintf(err_err_code, sizeof(err_err_code), "%02x", err_id);
 233
 234         dev_err(jrdev, "%08x: %s: %s %d: %s%s\n",
 235                 status, error, idx_str, idx, err_str, err_err_code);
 236 }
 237
 238 static void report_jr_status(struct device *jrdev, const u32 status,
 239                              const char *error)
 240 {
 241         dev_err(jrdev, "%08x: %s: %s() not implemented\n",
 242                 status, error, __func__);
 243 }
 244
 245 static void report_cond_code_status(struct device *jrdev, const u32 status,
 246                                     const char *error)
 247 {
 248         dev_err(jrdev, "%08x: %s: %s() not implemented\n",
 249                 status, error, __func__);
 250 }
 251
 252 void caam_jr_strstatus(struct device *jrdev, u32 status)
 253 {
 254         static const struct stat_src {
 255                 void (*report_ssed)(struct device *jrdev, const u32 status,
 256                                     const char *error);
 257                 const char *error;
 258         } status_src[16] = {
 259                 { NULL, "No error" },
 260                 { NULL, NULL },
 261                 { report_ccb_status, "CCB" },
 262                 { report_jump_status, "Jump" },
 263                 { report_deco_status, "DECO" },
 264                 { NULL, "Queue Manager Interface" },
 265                 { report_jr_status, "Job Ring" },
 266                 { report_cond_code_status, "Condition Code" },
 267                 { NULL, NULL },
 268                 { NULL, NULL },
 269                 { NULL, NULL },
 270                 { NULL, NULL },
 271                 { NULL, NULL },
 272                 { NULL, NULL },
 273                 { NULL, NULL },
 274                 { NULL, NULL },
 275         };
 276         u32 ssrc = status >> JRSTA_SSRC_SHIFT;
 277         const char *error = status_src[ssrc].error;
 278
 279         /*
 280          * If there is an error handling function, call it to report the error.
 281          * Otherwise print the error source name.
 282          */
 283         if (status_src[ssrc].report_ssed)
 284                 status_src[ssrc].report_ssed(jrdev, status, error);
 285         else if (error)
 286                 dev_err(jrdev, "%d: %s\n", ssrc, error);
 287         else
 288                 dev_err(jrdev, "%d: unknown error source\n", ssrc);
 289 }
 290 EXPORT_SYMBOL(caam_jr_strstatus);