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/drivers/crypto/caam/error.c

https://bitbucket.org/digetx/picasso-kernel
C | 274 lines | 248 code | 20 blank | 6 comment | 18 complexity | 5045ef250cd196301f6d7ff122de8ac6 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	if (likely(tmp)) {					\
 20		sprintf(tmp, format, param);			\
 21		strcat(str, tmp);				\
 22		kfree(tmp);					\
 23	} else {						\
 24		strcat(str, "kmalloc failure in SPRINTFCAT");	\
 25	}							\
 26}
 27
 28static void report_jump_idx(u32 status, char *outstr)
 29{
 30	u8 idx = (status & JRSTA_DECOERR_INDEX_MASK) >>
 31		  JRSTA_DECOERR_INDEX_SHIFT;
 32
 33	if (status & JRSTA_DECOERR_JUMP)
 34		strcat(outstr, "jump tgt desc idx ");
 35	else
 36		strcat(outstr, "desc idx ");
 37
 38	SPRINTFCAT(outstr, "%d: ", idx, sizeof("255"));
 39}
 40
 41static void report_ccb_status(u32 status, char *outstr)
 42{
 43	char *cha_id_list[] = {
 44		"",
 45		"AES",
 46		"DES",
 47		"ARC4",
 48		"MDHA",
 49		"RNG",
 50		"SNOW f8",
 51		"Kasumi f8/9",
 52		"PKHA",
 53		"CRCA",
 54		"SNOW f9",
 55		"ZUCE",
 56		"ZUCA",
 57	};
 58	char *err_id_list[] = {
 59		"No error.",
 60		"Mode error.",
 61		"Data size error.",
 62		"Key size error.",
 63		"PKHA A memory size error.",
 64		"PKHA B memory size error.",
 65		"Data arrived out of sequence error.",
 66		"PKHA divide-by-zero error.",
 67		"PKHA modulus even error.",
 68		"DES key parity error.",
 69		"ICV check failed.",
 70		"Hardware error.",
 71		"Unsupported CCM AAD size.",
 72		"Class 1 CHA is not reset",
 73		"Invalid CHA combination was selected",
 74		"Invalid CHA selected.",
 75	};
 76	char *rng_err_id_list[] = {
 77		"",
 78		"",
 79		"",
 80		"Instantiate",
 81		"Not instantiated",
 82		"Test instantiate",
 83		"Prediction resistance",
 84		"Prediction resistance and test request",
 85		"Uninstantiate",
 86		"Secure key generation",
 87	};
 88	u8 cha_id = (status & JRSTA_CCBERR_CHAID_MASK) >>
 89		    JRSTA_CCBERR_CHAID_SHIFT;
 90	u8 err_id = status & JRSTA_CCBERR_ERRID_MASK;
 91
 92	report_jump_idx(status, outstr);
 93
 94	if (cha_id < ARRAY_SIZE(cha_id_list)) {
 95		SPRINTFCAT(outstr, "%s: ", cha_id_list[cha_id],
 96			   strlen(cha_id_list[cha_id]));
 97	} else {
 98		SPRINTFCAT(outstr, "unidentified cha_id value 0x%02x: ",
 99			   cha_id, sizeof("ff"));
100	}
101
102	if ((cha_id << JRSTA_CCBERR_CHAID_SHIFT) == JRSTA_CCBERR_CHAID_RNG &&
103	    err_id < ARRAY_SIZE(rng_err_id_list) &&
104	    strlen(rng_err_id_list[err_id])) {
105		/* RNG-only error */
106		SPRINTFCAT(outstr, "%s", rng_err_id_list[err_id],
107			   strlen(rng_err_id_list[err_id]));
108	} else if (err_id < ARRAY_SIZE(err_id_list)) {
109		SPRINTFCAT(outstr, "%s", err_id_list[err_id],
110			   strlen(err_id_list[err_id]));
111	} else {
112		SPRINTFCAT(outstr, "unidentified err_id value 0x%02x",
113			   err_id, sizeof("ff"));
114	}
115}
116
117static void report_jump_status(u32 status, char *outstr)
118{
119	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
120}
121
122static void report_deco_status(u32 status, char *outstr)
123{
124	const struct {
125		u8 value;
126		char *error_text;
127	} desc_error_list[] = {
128		{ 0x00, "No error." },
129		{ 0x01, "SGT Length Error. The descriptor is trying to read "
130			"more data than is contained in the SGT table." },
131		{ 0x02, "SGT Null Entry Error." },
132		{ 0x03, "Job Ring Control Error. There is a bad value in the "
133			"Job Ring Control register." },
134		{ 0x04, "Invalid Descriptor Command. The Descriptor Command "
135			"field is invalid." },
136		{ 0x05, "Reserved." },
137		{ 0x06, "Invalid KEY Command" },
138		{ 0x07, "Invalid LOAD Command" },
139		{ 0x08, "Invalid STORE Command" },
140		{ 0x09, "Invalid OPERATION Command" },
141		{ 0x0A, "Invalid FIFO LOAD Command" },
142		{ 0x0B, "Invalid FIFO STORE Command" },
143		{ 0x0C, "Invalid MOVE/MOVE_LEN Command" },
144		{ 0x0D, "Invalid JUMP Command. A nonlocal JUMP Command is "
145			"invalid because the target is not a Job Header "
146			"Command, or the jump is from a Trusted Descriptor to "
147			"a Job Descriptor, or because the target Descriptor "
148			"contains a Shared Descriptor." },
149		{ 0x0E, "Invalid MATH Command" },
150		{ 0x0F, "Invalid SIGNATURE Command" },
151		{ 0x10, "Invalid Sequence Command. A SEQ IN PTR OR SEQ OUT PTR "
152			"Command is invalid or a SEQ KEY, SEQ LOAD, SEQ FIFO "
153			"LOAD, or SEQ FIFO STORE decremented the input or "
154			"output sequence length below 0. This error may result "
155			"if a built-in PROTOCOL Command has encountered a "
156			"malformed PDU." },
157		{ 0x11, "Skip data type invalid. The type must be 0xE or 0xF."},
158		{ 0x12, "Shared Descriptor Header Error" },
159		{ 0x13, "Header Error. Invalid length or parity, or certain "
160			"other problems." },
161		{ 0x14, "Burster Error. Burster has gotten to an illegal "
162			"state" },
163		{ 0x15, "Context Register Length Error. The descriptor is "
164			"trying to read or write past the end of the Context "
165			"Register. A SEQ LOAD or SEQ STORE with the VLF bit "
166			"set was executed with too large a length in the "
167			"variable length register (VSOL for SEQ STORE or VSIL "
168			"for SEQ LOAD)." },
169		{ 0x16, "DMA Error" },
170		{ 0x17, "Reserved." },
171		{ 0x1A, "Job failed due to JR reset" },
172		{ 0x1B, "Job failed due to Fail Mode" },
173		{ 0x1C, "DECO Watchdog timer timeout error" },
174		{ 0x1D, "DECO tried to copy a key from another DECO but the "
175			"other DECO's Key Registers were locked" },
176		{ 0x1E, "DECO attempted to copy data from a DECO that had an "
177			"unmasked Descriptor error" },
178		{ 0x1F, "LIODN error. DECO was trying to share from itself or "
179			"from another DECO but the two Non-SEQ LIODN values "
180			"didn't match or the 'shared from' DECO's Descriptor "
181			"required that the SEQ LIODNs be the same and they "
182			"aren't." },
183		{ 0x20, "DECO has completed a reset initiated via the DRR "
184			"register" },
185		{ 0x21, "Nonce error. When using EKT (CCM) key encryption "
186			"option in the FIFO STORE Command, the Nonce counter "
187			"reached its maximum value and this encryption mode "
188			"can no longer be used." },
189		{ 0x22, "Meta data is too large (> 511 bytes) for TLS decap "
190			"(input frame; block ciphers) and IPsec decap (output "
191			"frame, when doing the next header byte update) and "
192			"DCRC (output frame)." },
193		{ 0x23, "Read Input Frame error" },
194		{ 0x24, "JDKEK, TDKEK or TDSK not loaded error" },
195		{ 0x80, "DNR (do not run) error" },
196		{ 0x81, "undefined protocol command" },
197		{ 0x82, "invalid setting in PDB" },
198		{ 0x83, "Anti-replay LATE error" },
199		{ 0x84, "Anti-replay REPLAY error" },
200		{ 0x85, "Sequence number overflow" },
201		{ 0x86, "Sigver invalid signature" },
202		{ 0x87, "DSA Sign Illegal test descriptor" },
203		{ 0x88, "Protocol Format Error - A protocol has seen an error "
204			"in the format of data received. When running RSA, "
205			"this means that formatting with random padding was "
206			"used, and did not follow the form: 0x00, 0x02, 8-to-N "
207			"bytes of non-zero pad, 0x00, F data." },
208		{ 0x89, "Protocol Size Error - A protocol has seen an error in "
209			"size. When running RSA, pdb size N < (size of F) when "
210			"no formatting is used; or pdb size N < (F + 11) when "
211			"formatting is used." },
212		{ 0xC1, "Blob Command error: Undefined mode" },
213		{ 0xC2, "Blob Command error: Secure Memory Blob mode error" },
214		{ 0xC4, "Blob Command error: Black Blob key or input size "
215			"error" },
216		{ 0xC5, "Blob Command error: Invalid key destination" },
217		{ 0xC8, "Blob Command error: Trusted/Secure mode error" },
218		{ 0xF0, "IPsec TTL or hop limit field either came in as 0, "
219			"or was decremented to 0" },
220		{ 0xF1, "3GPP HFN matches or exceeds the Threshold" },
221	};
222	u8 desc_error = status & JRSTA_DECOERR_ERROR_MASK;
223	int i;
224
225	report_jump_idx(status, outstr);
226
227	for (i = 0; i < ARRAY_SIZE(desc_error_list); i++)
228		if (desc_error_list[i].value == desc_error)
229			break;
230
231	if (i != ARRAY_SIZE(desc_error_list) && desc_error_list[i].error_text) {
232		SPRINTFCAT(outstr, "%s", desc_error_list[i].error_text,
233			   strlen(desc_error_list[i].error_text));
234	} else {
235		SPRINTFCAT(outstr, "unidentified error value 0x%02x",
236			   desc_error, sizeof("ff"));
237	}
238}
239
240static void report_jr_status(u32 status, char *outstr)
241{
242	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
243}
244
245static void report_cond_code_status(u32 status, char *outstr)
246{
247	SPRINTFCAT(outstr, "%s() not implemented", __func__, sizeof(__func__));
248}
249
250char *caam_jr_strstatus(char *outstr, u32 status)
251{
252	struct stat_src {
253		void (*report_ssed)(u32 status, char *outstr);
254		char *error;
255	} status_src[] = {
256		{ NULL, "No error" },
257		{ NULL, NULL },
258		{ report_ccb_status, "CCB" },
259		{ report_jump_status, "Jump" },
260		{ report_deco_status, "DECO" },
261		{ NULL, NULL },
262		{ report_jr_status, "Job Ring" },
263		{ report_cond_code_status, "Condition Code" },
264	};
265	u32 ssrc = status >> JRSTA_SSRC_SHIFT;
266
267	sprintf(outstr, "%s: ", status_src[ssrc].error);
268
269	if (status_src[ssrc].report_ssed)
270		status_src[ssrc].report_ssed(status, outstr);
271
272	return outstr;
273}
274EXPORT_SYMBOL(caam_jr_strstatus);