PageRenderTime 26ms CodeModel.GetById 12ms app.highlight 10ms RepoModel.GetById 1ms app.codeStats 0ms

/drivers/crypto/caam/error.c

https://bitbucket.org/nicktime/gnex-kernel
C | 270 lines | 244 code | 20 blank | 6 comment | 16 complexity | 6cf19977a3d54f3908637f48bf807ea8 MD5 | raw file
  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
 24static 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
 37static void report_ccb_status(u32 status, char *outstr)
 38{
 39	char *cha_id_list[] = {
 40		"",
 41		"AES",
 42		"DES",
 43		"ARC4",
 44		"MDHA",
 45		"RNG",
 46		"SNOW f8",
 47		"Kasumi f8/9",
 48		"PKHA",
 49		"CRCA",
 50		"SNOW f9",
 51		"ZUCE",
 52		"ZUCA",
 53	};
 54	char *err_id_list[] = {
 55		"No error.",
 56		"Mode error.",
 57		"Data size error.",
 58		"Key size error.",
 59		"PKHA A memory size error.",
 60		"PKHA B memory size error.",
 61		"Data arrived out of sequence error.",
 62		"PKHA divide-by-zero error.",
 63		"PKHA modulus even error.",
 64		"DES key parity error.",
 65		"ICV check failed.",
 66		"Hardware error.",
 67		"Unsupported CCM AAD size.",
 68		"Class 1 CHA is not reset",
 69		"Invalid CHA combination was selected",
 70		"Invalid CHA selected.",
 71	};
 72	char *rng_err_id_list[] = {
 73		"",
 74		"",
 75		"",
 76		"Instantiate",
 77		"Not instantiated",
 78		"Test instantiate",
 79		"Prediction resistance",
 80		"Prediction resistance and test request",
 81		"Uninstantiate",
 82		"Secure key generation",
 83	};
 84	u8 cha_id = (status & JRSTA_CCBERR_CHAID_MASK) >>
 85		    JRSTA_CCBERR_CHAID_SHIFT;
 86	u8 err_id = status & JRSTA_CCBERR_ERRID_MASK;
 87
 88	report_jump_idx(status, outstr);
 89
 90	if (cha_id < ARRAY_SIZE(cha_id_list)) {
 91		SPRINTFCAT(outstr, "%s: ", cha_id_list[cha_id],
 92			   strlen(cha_id_list[cha_id]));
 93	} else {
 94		SPRINTFCAT(outstr, "unidentified cha_id value 0x%02x: ",
 95			   cha_id, sizeof("ff"));
 96	}
 97
 98	if ((cha_id << JRSTA_CCBERR_CHAID_SHIFT) == JRSTA_CCBERR_CHAID_RNG &&
 99	    err_id < ARRAY_SIZE(rng_err_id_list) &&
100	    strlen(rng_err_id_list[err_id])) {
101		/* RNG-only error */
102		SPRINTFCAT(outstr, "%s", rng_err_id_list[err_id],
103			   strlen(rng_err_id_list[err_id]));
104	} else if (err_id < ARRAY_SIZE(err_id_list)) {
105		SPRINTFCAT(outstr, "%s", err_id_list[err_id],
106			   strlen(err_id_list[err_id]));
107	} else {
108		SPRINTFCAT(outstr, "unidentified err_id value 0x%02x",
109			   err_id, sizeof("ff"));
110	}
111}
112
113static void report_jump_status(u32 status, char *outstr)
114{
115	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
116}
117
118static void report_deco_status(u32 status, char *outstr)
119{
120	const struct {
121		u8 value;
122		char *error_text;
123	} desc_error_list[] = {
124		{ 0x00, "No error." },
125		{ 0x01, "SGT Length Error. The descriptor is trying to read "
126			"more data than is contained in the SGT table." },
127		{ 0x02, "SGT Null Entry Error." },
128		{ 0x03, "Job Ring Control Error. There is a bad value in the "
129			"Job Ring Control register." },
130		{ 0x04, "Invalid Descriptor Command. The Descriptor Command "
131			"field is invalid." },
132		{ 0x05, "Reserved." },
133		{ 0x06, "Invalid KEY Command" },
134		{ 0x07, "Invalid LOAD Command" },
135		{ 0x08, "Invalid STORE Command" },
136		{ 0x09, "Invalid OPERATION Command" },
137		{ 0x0A, "Invalid FIFO LOAD Command" },
138		{ 0x0B, "Invalid FIFO STORE Command" },
139		{ 0x0C, "Invalid MOVE/MOVE_LEN Command" },
140		{ 0x0D, "Invalid JUMP Command. A nonlocal JUMP Command is "
141			"invalid because the target is not a Job Header "
142			"Command, or the jump is from a Trusted Descriptor to "
143			"a Job Descriptor, or because the target Descriptor "
144			"contains a Shared Descriptor." },
145		{ 0x0E, "Invalid MATH Command" },
146		{ 0x0F, "Invalid SIGNATURE Command" },
147		{ 0x10, "Invalid Sequence Command. A SEQ IN PTR OR SEQ OUT PTR "
148			"Command is invalid or a SEQ KEY, SEQ LOAD, SEQ FIFO "
149			"LOAD, or SEQ FIFO STORE decremented the input or "
150			"output sequence length below 0. This error may result "
151			"if a built-in PROTOCOL Command has encountered a "
152			"malformed PDU." },
153		{ 0x11, "Skip data type invalid. The type must be 0xE or 0xF."},
154		{ 0x12, "Shared Descriptor Header Error" },
155		{ 0x13, "Header Error. Invalid length or parity, or certain "
156			"other problems." },
157		{ 0x14, "Burster Error. Burster has gotten to an illegal "
158			"state" },
159		{ 0x15, "Context Register Length Error. The descriptor is "
160			"trying to read or write past the end of the Context "
161			"Register. A SEQ LOAD or SEQ STORE with the VLF bit "
162			"set was executed with too large a length in the "
163			"variable length register (VSOL for SEQ STORE or VSIL "
164			"for SEQ LOAD)." },
165		{ 0x16, "DMA Error" },
166		{ 0x17, "Reserved." },
167		{ 0x1A, "Job failed due to JR reset" },
168		{ 0x1B, "Job failed due to Fail Mode" },
169		{ 0x1C, "DECO Watchdog timer timeout error" },
170		{ 0x1D, "DECO tried to copy a key from another DECO but the "
171			"other DECO's Key Registers were locked" },
172		{ 0x1E, "DECO attempted to copy data from a DECO that had an "
173			"unmasked Descriptor error" },
174		{ 0x1F, "LIODN error. DECO was trying to share from itself or "
175			"from another DECO but the two Non-SEQ LIODN values "
176			"didn't match or the 'shared from' DECO's Descriptor "
177			"required that the SEQ LIODNs be the same and they "
178			"aren't." },
179		{ 0x20, "DECO has completed a reset initiated via the DRR "
180			"register" },
181		{ 0x21, "Nonce error. When using EKT (CCM) key encryption "
182			"option in the FIFO STORE Command, the Nonce counter "
183			"reached its maximum value and this encryption mode "
184			"can no longer be used." },
185		{ 0x22, "Meta data is too large (> 511 bytes) for TLS decap "
186			"(input frame; block ciphers) and IPsec decap (output "
187			"frame, when doing the next header byte update) and "
188			"DCRC (output frame)." },
189		{ 0x23, "Read Input Frame error" },
190		{ 0x24, "JDKEK, TDKEK or TDSK not loaded error" },
191		{ 0x80, "DNR (do not run) error" },
192		{ 0x81, "undefined protocol command" },
193		{ 0x82, "invalid setting in PDB" },
194		{ 0x83, "Anti-replay LATE error" },
195		{ 0x84, "Anti-replay REPLAY error" },
196		{ 0x85, "Sequence number overflow" },
197		{ 0x86, "Sigver invalid signature" },
198		{ 0x87, "DSA Sign Illegal test descriptor" },
199		{ 0x88, "Protocol Format Error - A protocol has seen an error "
200			"in the format of data received. When running RSA, "
201			"this means that formatting with random padding was "
202			"used, and did not follow the form: 0x00, 0x02, 8-to-N "
203			"bytes of non-zero pad, 0x00, F data." },
204		{ 0x89, "Protocol Size Error - A protocol has seen an error in "
205			"size. When running RSA, pdb size N < (size of F) when "
206			"no formatting is used; or pdb size N < (F + 11) when "
207			"formatting is used." },
208		{ 0xC1, "Blob Command error: Undefined mode" },
209		{ 0xC2, "Blob Command error: Secure Memory Blob mode error" },
210		{ 0xC4, "Blob Command error: Black Blob key or input size "
211			"error" },
212		{ 0xC5, "Blob Command error: Invalid key destination" },
213		{ 0xC8, "Blob Command error: Trusted/Secure mode error" },
214		{ 0xF0, "IPsec TTL or hop limit field either came in as 0, "
215			"or was decremented to 0" },
216		{ 0xF1, "3GPP HFN matches or exceeds the Threshold" },
217	};
218	u8 desc_error = status & JRSTA_DECOERR_ERROR_MASK;
219	int i;
220
221	report_jump_idx(status, outstr);
222
223	for (i = 0; i < ARRAY_SIZE(desc_error_list); i++)
224		if (desc_error_list[i].value == desc_error)
225			break;
226
227	if (i != ARRAY_SIZE(desc_error_list) && desc_error_list[i].error_text) {
228		SPRINTFCAT(outstr, "%s", desc_error_list[i].error_text,
229			   strlen(desc_error_list[i].error_text));
230	} else {
231		SPRINTFCAT(outstr, "unidentified error value 0x%02x",
232			   desc_error, sizeof("ff"));
233	}
234}
235
236static void report_jr_status(u32 status, char *outstr)
237{
238	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
239}
240
241static void report_cond_code_status(u32 status, char *outstr)
242{
243	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
244}
245
246char *caam_jr_strstatus(char *outstr, u32 status)
247{
248	struct stat_src {
249		void (*report_ssed)(u32 status, char *outstr);
250		char *error;
251	} status_src[] = {
252		{ NULL, "No error" },
253		{ NULL, NULL },
254		{ report_ccb_status, "CCB" },
255		{ report_jump_status, "Jump" },
256		{ report_deco_status, "DECO" },
257		{ NULL, NULL },
258		{ report_jr_status, "Job Ring" },
259		{ report_cond_code_status, "Condition Code" },
260	};
261	u32 ssrc = status >> JRSTA_SSRC_SHIFT;
262
263	sprintf(outstr, "%s: ", status_src[ssrc].error);
264
265	if (status_src[ssrc].report_ssed)
266		status_src[ssrc].report_ssed(status, outstr);
267
268	return outstr;
269}
270EXPORT_SYMBOL(caam_jr_strstatus);