diff options
Diffstat (limited to 'drivers/crypto/caam/error.c')
| -rw-r--r-- | drivers/crypto/caam/error.c | 291 |
1 files changed, 291 insertions, 0 deletions
diff --git a/drivers/crypto/caam/error.c b/drivers/crypto/caam/error.c new file mode 100644 index 000000000..832ba2afd --- /dev/null +++ b/drivers/crypto/caam/error.c @@ -0,0 +1,291 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CAAM Error Reporting + * + * Copyright 2009-2011 Freescale Semiconductor, Inc. + */ + +#include "compat.h" +#include "regs.h" +#include "desc.h" +#include "error.h" + +#ifdef DEBUG +#include <linux/highmem.h> + +void caam_dump_sg(const char *level, const char *prefix_str, int prefix_type, + int rowsize, int groupsize, struct scatterlist *sg, + size_t tlen, bool ascii) +{ + struct scatterlist *it; + void *it_page; + size_t len; + void *buf; + + for (it = sg; it && tlen > 0 ; it = sg_next(it)) { + /* + * make sure the scatterlist's page + * has a valid virtual memory mapping + */ + it_page = kmap_atomic(sg_page(it)); + if (unlikely(!it_page)) { + pr_err("caam_dump_sg: kmap failed\n"); + return; + } + + buf = it_page + it->offset; + len = min_t(size_t, tlen, it->length); + print_hex_dump(level, prefix_str, prefix_type, rowsize, + groupsize, buf, len, ascii); + tlen -= len; + + kunmap_atomic(it_page); + } +} +#else +void caam_dump_sg(const char *level, const char *prefix_str, int prefix_type, + int rowsize, int groupsize, struct scatterlist *sg, + size_t tlen, bool ascii) +{} +#endif /* DEBUG */ +EXPORT_SYMBOL(caam_dump_sg); + +static const struct { + u8 value; + const char *error_text; +} desc_error_list[] = { + { 0x00, "No error." }, + { 0x01, "SGT Length Error. The descriptor is trying to read more data than is contained in the SGT table." }, + { 0x02, "SGT Null Entry Error." }, + { 0x03, "Job Ring Control Error. There is a bad value in the Job Ring Control register." }, + { 0x04, "Invalid Descriptor Command. The Descriptor Command field is invalid." }, + { 0x05, "Reserved." }, + { 0x06, "Invalid KEY Command" }, + { 0x07, "Invalid LOAD Command" }, + { 0x08, "Invalid STORE Command" }, + { 0x09, "Invalid OPERATION Command" }, + { 0x0A, "Invalid FIFO LOAD Command" }, + { 0x0B, "Invalid FIFO STORE Command" }, + { 0x0C, "Invalid MOVE/MOVE_LEN Command" }, + { 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." }, + { 0x0E, "Invalid MATH Command" }, + { 0x0F, "Invalid SIGNATURE Command" }, + { 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." }, + { 0x11, "Skip data type invalid. The type must be 0xE or 0xF."}, + { 0x12, "Shared Descriptor Header Error" }, + { 0x13, "Header Error. Invalid length or parity, or certain other problems." }, + { 0x14, "Burster Error. Burster has gotten to an illegal state" }, + { 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)." }, + { 0x16, "DMA Error" }, + { 0x17, "Reserved." }, + { 0x1A, "Job failed due to JR reset" }, + { 0x1B, "Job failed due to Fail Mode" }, + { 0x1C, "DECO Watchdog timer timeout error" }, + { 0x1D, "DECO tried to copy a key from another DECO but the other DECO's Key Registers were locked" }, + { 0x1E, "DECO attempted to copy data from a DECO that had an unmasked Descriptor error" }, + { 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." }, + { 0x20, "DECO has completed a reset initiated via the DRR register" }, + { 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." }, + { 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)." }, + { 0x23, "Read Input Frame error" }, + { 0x24, "JDKEK, TDKEK or TDSK not loaded error" }, + { 0x80, "DNR (do not run) error" }, + { 0x81, "undefined protocol command" }, + { 0x82, "invalid setting in PDB" }, + { 0x83, "Anti-replay LATE error" }, + { 0x84, "Anti-replay REPLAY error" }, + { 0x85, "Sequence number overflow" }, + { 0x86, "Sigver invalid signature" }, + { 0x87, "DSA Sign Illegal test descriptor" }, + { 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." }, + { 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." }, + { 0xC1, "Blob Command error: Undefined mode" }, + { 0xC2, "Blob Command error: Secure Memory Blob mode error" }, + { 0xC4, "Blob Command error: Black Blob key or input size error" }, + { 0xC5, "Blob Command error: Invalid key destination" }, + { 0xC8, "Blob Command error: Trusted/Secure mode error" }, + { 0xF0, "IPsec TTL or hop limit field either came in as 0, or was decremented to 0" }, + { 0xF1, "3GPP HFN matches or exceeds the Threshold" }, +}; + +static const char * const cha_id_list[] = { + "", + "AES", + "DES", + "ARC4", + "MDHA", + "RNG", + "SNOW f8", + "Kasumi f8/9", + "PKHA", + "CRCA", + "SNOW f9", + "ZUCE", + "ZUCA", +}; + +static const char * const err_id_list[] = { + "No error.", + "Mode error.", + "Data size error.", + "Key size error.", + "PKHA A memory size error.", + "PKHA B memory size error.", + "Data arrived out of sequence error.", + "PKHA divide-by-zero error.", + "PKHA modulus even error.", + "DES key parity error.", + "ICV check failed.", + "Hardware error.", + "Unsupported CCM AAD size.", + "Class 1 CHA is not reset", + "Invalid CHA combination was selected", + "Invalid CHA selected.", +}; + +static const char * const rng_err_id_list[] = { + "", + "", + "", + "Instantiate", + "Not instantiated", + "Test instantiate", + "Prediction resistance", + "Prediction resistance and test request", + "Uninstantiate", + "Secure key generation", +}; + +static void report_ccb_status(struct device *jrdev, const u32 status, + const char *error) +{ + u8 cha_id = (status & JRSTA_CCBERR_CHAID_MASK) >> + JRSTA_CCBERR_CHAID_SHIFT; + u8 err_id = status & JRSTA_CCBERR_ERRID_MASK; + u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >> + JRSTA_DECOERR_INDEX_SHIFT; + char *idx_str; + const char *cha_str = "unidentified cha_id value 0x"; + char cha_err_code[3] = { 0 }; + const char *err_str = "unidentified err_id value 0x"; + char err_err_code[3] = { 0 }; + + if (status & JRSTA_DECOERR_JUMP) + idx_str = "jump tgt desc idx"; + else + idx_str = "desc idx"; + + if (cha_id < ARRAY_SIZE(cha_id_list)) + cha_str = cha_id_list[cha_id]; + else + snprintf(cha_err_code, sizeof(cha_err_code), "%02x", cha_id); + + if ((cha_id << JRSTA_CCBERR_CHAID_SHIFT) == JRSTA_CCBERR_CHAID_RNG && + err_id < ARRAY_SIZE(rng_err_id_list) && + strlen(rng_err_id_list[err_id])) { + /* RNG-only error */ + err_str = rng_err_id_list[err_id]; + } else { + err_str = err_id_list[err_id]; + } + + /* + * CCB ICV check failures are part of normal operation life; + * we leave the upper layers to do what they want with them. + */ + if (err_id != JRSTA_CCBERR_ERRID_ICVCHK) + dev_err(jrdev, "%08x: %s: %s %d: %s%s: %s%s\n", + status, error, idx_str, idx, + cha_str, cha_err_code, + err_str, err_err_code); +} + +static void report_jump_status(struct device *jrdev, const u32 status, + const char *error) +{ + dev_err(jrdev, "%08x: %s: %s() not implemented\n", + status, error, __func__); +} + +static void report_deco_status(struct device *jrdev, const u32 status, + const char *error) +{ + u8 err_id = status & JRSTA_DECOERR_ERROR_MASK; + u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >> + JRSTA_DECOERR_INDEX_SHIFT; + char *idx_str; + const char *err_str = "unidentified error value 0x"; + char err_err_code[3] = { 0 }; + int i; + + if (status & JRSTA_DECOERR_JUMP) + idx_str = "jump tgt desc idx"; + else + idx_str = "desc idx"; + + for (i = 0; i < ARRAY_SIZE(desc_error_list); i++) + if (desc_error_list[i].value == err_id) + break; + + if (i != ARRAY_SIZE(desc_error_list) && desc_error_list[i].error_text) + err_str = desc_error_list[i].error_text; + else + snprintf(err_err_code, sizeof(err_err_code), "%02x", err_id); + + dev_err(jrdev, "%08x: %s: %s %d: %s%s\n", + status, error, idx_str, idx, err_str, err_err_code); +} + +static void report_jr_status(struct device *jrdev, const u32 status, + const char *error) +{ + dev_err(jrdev, "%08x: %s: %s() not implemented\n", + status, error, __func__); +} + +static void report_cond_code_status(struct device *jrdev, const u32 status, + const char *error) +{ + dev_err(jrdev, "%08x: %s: %s() not implemented\n", + status, error, __func__); +} + +void caam_jr_strstatus(struct device *jrdev, u32 status) +{ + static const struct stat_src { + void (*report_ssed)(struct device *jrdev, const u32 status, + const char *error); + const char *error; + } status_src[16] = { + { NULL, "No error" }, + { NULL, NULL }, + { report_ccb_status, "CCB" }, + { report_jump_status, "Jump" }, + { report_deco_status, "DECO" }, + { NULL, "Queue Manager Interface" }, + { report_jr_status, "Job Ring" }, + { report_cond_code_status, "Condition Code" }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + { NULL, NULL }, + }; + u32 ssrc = status >> JRSTA_SSRC_SHIFT; + const char *error = status_src[ssrc].error; + + /* + * If there is an error handling function, call it to report the error. + * Otherwise print the error source name. + */ + if (status_src[ssrc].report_ssed) + status_src[ssrc].report_ssed(jrdev, status, error); + else if (error) + dev_err(jrdev, "%d: %s\n", ssrc, error); + else + dev_err(jrdev, "%d: unknown error source\n", ssrc); +} +EXPORT_SYMBOL(caam_jr_strstatus); |