summaryrefslogtreecommitdiff
path: root/drivers/crypto/caam/error.c
blob: a4129a35a330241b1309e6fa42796e8441bf5119 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
// 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(sg)) {
		/*
		 * 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);

bool caam_little_end;
EXPORT_SYMBOL(caam_little_end);

bool caam_imx;
EXPORT_SYMBOL(caam_imx);

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 struct {
	u8 value;
	const char *error_text;
} qi_error_list[] = {
	{ 0x1F, "Job terminated by FQ or ICID flush" },
	{ 0x20, "FD format error"},
	{ 0x21, "FD command format error"},
	{ 0x23, "FL format error"},
	{ 0x25, "CRJD specified in FD, but not enabled in FLC"},
	{ 0x30, "Max. buffer size too small"},
	{ 0x31, "DHR exceeds max. buffer size (allocate mode, S/G format)"},
	{ 0x32, "SGT exceeds max. buffer size (allocate mode, S/G format"},
	{ 0x33, "Size over/underflow (allocate mode)"},
	{ 0x34, "Size over/underflow (reuse mode)"},
	{ 0x35, "Length exceeds max. short length (allocate mode, S/G/ format)"},
	{ 0x36, "Memory footprint exceeds max. value (allocate mode, S/G/ format)"},
	{ 0x41, "SBC frame format not supported (allocate mode)"},
	{ 0x42, "Pool 0 invalid / pool 1 size < pool 0 size (allocate mode)"},
	{ 0x43, "Annotation output enabled but ASAR = 0 (allocate mode)"},
	{ 0x44, "Unsupported or reserved frame format or SGHR = 1 (reuse mode)"},
	{ 0x45, "DHR correction underflow (reuse mode, single buffer format)"},
	{ 0x46, "Annotation length exceeds offset (reuse mode)"},
	{ 0x48, "Annotation output enabled but ASA limited by ASAR (reuse mode)"},
	{ 0x49, "Data offset correction exceeds input frame data length (reuse mode)"},
	{ 0x4B, "Annotation output enabled but ASA cannot be expanded (frame list)"},
	{ 0x51, "Unsupported IF reuse mode"},
	{ 0x52, "Unsupported FL use mode"},
	{ 0x53, "Unsupported RJD use mode"},
	{ 0x54, "Unsupported inline descriptor use mode"},
	{ 0xC0, "Table buffer pool 0 depletion"},
	{ 0xC1, "Table buffer pool 1 depletion"},
	{ 0xC2, "Data buffer pool 0 depletion, no OF allocated"},
	{ 0xC3, "Data buffer pool 1 depletion, no OF allocated"},
	{ 0xC4, "Data buffer pool 0 depletion, partial OF allocated"},
	{ 0xC5, "Data buffer pool 1 depletion, partial OF allocated"},
	{ 0xD0, "FLC read error"},
	{ 0xD1, "FL read error"},
	{ 0xD2, "FL write error"},
	{ 0xD3, "OF SGT write error"},
	{ 0xD4, "PTA read error"},
	{ 0xD5, "PTA write error"},
	{ 0xD6, "OF SGT F-bit write error"},
	{ 0xD7, "ASA write error"},
	{ 0xE1, "FLC[ICR]=0 ICID error"},
	{ 0xE2, "FLC[ICR]=1 ICID error"},
	{ 0xE4, "source of ICID flush not trusted (BDI = 0)"},
};

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_qi_status(struct device *qidev, const u32 status,
			     const char *error)
{
	u8 err_id = status & JRSTA_QIERR_ERROR_MASK;
	const char *err_str = "unidentified error value 0x";
	char err_err_code[3] = { 0 };
	int i;

	for (i = 0; i < ARRAY_SIZE(qi_error_list); i++)
		if (qi_error_list[i].value == err_id)
			break;

	if (i != ARRAY_SIZE(qi_error_list) && qi_error_list[i].error_text)
		err_str = qi_error_list[i].error_text;
	else
		snprintf(err_err_code, sizeof(err_err_code), "%02x", err_id);

	dev_err(qidev, "%08x: %s: %s%s\n",
		status, error, 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_strstatus(struct device *jrdev, u32 status, bool qi_v2)
{
	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" },
		{ report_qi_status, "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_strstatus);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("FSL CAAM error reporting");
MODULE_AUTHOR("Freescale Semiconductor");