Commit | Line | Data |
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8628e7c8 DK |
1 | /* |
2 | * Cryptographic API. | |
3 | * | |
4 | * Support for OMAP SHA1/MD5 HW acceleration. | |
5 | * | |
6 | * Copyright (c) 2010 Nokia Corporation | |
7 | * Author: Dmitry Kasatkin <dmitry.kasatkin@nokia.com> | |
0d373d60 | 8 | * Copyright (c) 2011 Texas Instruments Incorporated |
8628e7c8 DK |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as published | |
12 | * by the Free Software Foundation. | |
13 | * | |
14 | * Some ideas are from old omap-sha1-md5.c driver. | |
15 | */ | |
16 | ||
17 | #define pr_fmt(fmt) "%s: " fmt, __func__ | |
18 | ||
8628e7c8 DK |
19 | #include <linux/err.h> |
20 | #include <linux/device.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/errno.h> | |
24 | #include <linux/interrupt.h> | |
25 | #include <linux/kernel.h> | |
8628e7c8 DK |
26 | #include <linux/irq.h> |
27 | #include <linux/io.h> | |
28 | #include <linux/platform_device.h> | |
29 | #include <linux/scatterlist.h> | |
30 | #include <linux/dma-mapping.h> | |
dfd061d5 MG |
31 | #include <linux/dmaengine.h> |
32 | #include <linux/omap-dma.h> | |
b359f034 | 33 | #include <linux/pm_runtime.h> |
03feec9c MG |
34 | #include <linux/of.h> |
35 | #include <linux/of_device.h> | |
36 | #include <linux/of_address.h> | |
37 | #include <linux/of_irq.h> | |
8628e7c8 DK |
38 | #include <linux/delay.h> |
39 | #include <linux/crypto.h> | |
40 | #include <linux/cryptohash.h> | |
41 | #include <crypto/scatterwalk.h> | |
42 | #include <crypto/algapi.h> | |
43 | #include <crypto/sha.h> | |
44 | #include <crypto/hash.h> | |
45 | #include <crypto/internal/hash.h> | |
46 | ||
8628e7c8 DK |
47 | #define MD5_DIGEST_SIZE 16 |
48 | ||
0d373d60 MG |
49 | #define SHA_REG_IDIGEST(dd, x) ((dd)->pdata->idigest_ofs + ((x)*0x04)) |
50 | #define SHA_REG_DIN(dd, x) ((dd)->pdata->din_ofs + ((x) * 0x04)) | |
51 | #define SHA_REG_DIGCNT(dd) ((dd)->pdata->digcnt_ofs) | |
52 | ||
eaef7e3f | 53 | #define SHA_REG_ODIGEST(dd, x) ((dd)->pdata->odigest_ofs + (x * 0x04)) |
8628e7c8 DK |
54 | |
55 | #define SHA_REG_CTRL 0x18 | |
56 | #define SHA_REG_CTRL_LENGTH (0xFFFFFFFF << 5) | |
57 | #define SHA_REG_CTRL_CLOSE_HASH (1 << 4) | |
58 | #define SHA_REG_CTRL_ALGO_CONST (1 << 3) | |
59 | #define SHA_REG_CTRL_ALGO (1 << 2) | |
60 | #define SHA_REG_CTRL_INPUT_READY (1 << 1) | |
61 | #define SHA_REG_CTRL_OUTPUT_READY (1 << 0) | |
62 | ||
0d373d60 | 63 | #define SHA_REG_REV(dd) ((dd)->pdata->rev_ofs) |
8628e7c8 | 64 | |
0d373d60 | 65 | #define SHA_REG_MASK(dd) ((dd)->pdata->mask_ofs) |
8628e7c8 DK |
66 | #define SHA_REG_MASK_DMA_EN (1 << 3) |
67 | #define SHA_REG_MASK_IT_EN (1 << 2) | |
68 | #define SHA_REG_MASK_SOFTRESET (1 << 1) | |
69 | #define SHA_REG_AUTOIDLE (1 << 0) | |
70 | ||
0d373d60 | 71 | #define SHA_REG_SYSSTATUS(dd) ((dd)->pdata->sysstatus_ofs) |
8628e7c8 DK |
72 | #define SHA_REG_SYSSTATUS_RESETDONE (1 << 0) |
73 | ||
eaef7e3f | 74 | #define SHA_REG_MODE(dd) ((dd)->pdata->mode_ofs) |
0d373d60 MG |
75 | #define SHA_REG_MODE_HMAC_OUTER_HASH (1 << 7) |
76 | #define SHA_REG_MODE_HMAC_KEY_PROC (1 << 5) | |
77 | #define SHA_REG_MODE_CLOSE_HASH (1 << 4) | |
78 | #define SHA_REG_MODE_ALGO_CONSTANT (1 << 3) | |
0d373d60 | 79 | |
eaef7e3f LV |
80 | #define SHA_REG_MODE_ALGO_MASK (7 << 0) |
81 | #define SHA_REG_MODE_ALGO_MD5_128 (0 << 1) | |
82 | #define SHA_REG_MODE_ALGO_SHA1_160 (1 << 1) | |
83 | #define SHA_REG_MODE_ALGO_SHA2_224 (2 << 1) | |
84 | #define SHA_REG_MODE_ALGO_SHA2_256 (3 << 1) | |
85 | #define SHA_REG_MODE_ALGO_SHA2_384 (1 << 0) | |
86 | #define SHA_REG_MODE_ALGO_SHA2_512 (3 << 0) | |
87 | ||
88 | #define SHA_REG_LENGTH(dd) ((dd)->pdata->length_ofs) | |
0d373d60 MG |
89 | |
90 | #define SHA_REG_IRQSTATUS 0x118 | |
91 | #define SHA_REG_IRQSTATUS_CTX_RDY (1 << 3) | |
92 | #define SHA_REG_IRQSTATUS_PARTHASH_RDY (1 << 2) | |
93 | #define SHA_REG_IRQSTATUS_INPUT_RDY (1 << 1) | |
94 | #define SHA_REG_IRQSTATUS_OUTPUT_RDY (1 << 0) | |
95 | ||
96 | #define SHA_REG_IRQENA 0x11C | |
97 | #define SHA_REG_IRQENA_CTX_RDY (1 << 3) | |
98 | #define SHA_REG_IRQENA_PARTHASH_RDY (1 << 2) | |
99 | #define SHA_REG_IRQENA_INPUT_RDY (1 << 1) | |
100 | #define SHA_REG_IRQENA_OUTPUT_RDY (1 << 0) | |
101 | ||
8628e7c8 DK |
102 | #define DEFAULT_TIMEOUT_INTERVAL HZ |
103 | ||
ea1fd224 DK |
104 | /* mostly device flags */ |
105 | #define FLAGS_BUSY 0 | |
106 | #define FLAGS_FINAL 1 | |
107 | #define FLAGS_DMA_ACTIVE 2 | |
108 | #define FLAGS_OUTPUT_READY 3 | |
109 | #define FLAGS_INIT 4 | |
110 | #define FLAGS_CPU 5 | |
6c63db82 | 111 | #define FLAGS_DMA_READY 6 |
0d373d60 MG |
112 | #define FLAGS_AUTO_XOR 7 |
113 | #define FLAGS_BE32_SHA1 8 | |
ea1fd224 DK |
114 | /* context flags */ |
115 | #define FLAGS_FINUP 16 | |
116 | #define FLAGS_SG 17 | |
8628e7c8 | 117 | |
0d373d60 | 118 | #define FLAGS_MODE_SHIFT 18 |
eaef7e3f LV |
119 | #define FLAGS_MODE_MASK (SHA_REG_MODE_ALGO_MASK << FLAGS_MODE_SHIFT) |
120 | #define FLAGS_MODE_MD5 (SHA_REG_MODE_ALGO_MD5_128 << FLAGS_MODE_SHIFT) | |
121 | #define FLAGS_MODE_SHA1 (SHA_REG_MODE_ALGO_SHA1_160 << FLAGS_MODE_SHIFT) | |
122 | #define FLAGS_MODE_SHA224 (SHA_REG_MODE_ALGO_SHA2_224 << FLAGS_MODE_SHIFT) | |
123 | #define FLAGS_MODE_SHA256 (SHA_REG_MODE_ALGO_SHA2_256 << FLAGS_MODE_SHIFT) | |
124 | #define FLAGS_MODE_SHA384 (SHA_REG_MODE_ALGO_SHA2_384 << FLAGS_MODE_SHIFT) | |
125 | #define FLAGS_MODE_SHA512 (SHA_REG_MODE_ALGO_SHA2_512 << FLAGS_MODE_SHIFT) | |
126 | ||
127 | #define FLAGS_HMAC 21 | |
128 | #define FLAGS_ERROR 22 | |
0d373d60 MG |
129 | |
130 | #define OP_UPDATE 1 | |
131 | #define OP_FINAL 2 | |
8628e7c8 | 132 | |
798eed5d DK |
133 | #define OMAP_ALIGN_MASK (sizeof(u32)-1) |
134 | #define OMAP_ALIGNED __attribute__((aligned(sizeof(u32)))) | |
135 | ||
0d373d60 | 136 | #define BUFLEN PAGE_SIZE |
798eed5d | 137 | |
8628e7c8 DK |
138 | struct omap_sham_dev; |
139 | ||
140 | struct omap_sham_reqctx { | |
141 | struct omap_sham_dev *dd; | |
142 | unsigned long flags; | |
143 | unsigned long op; | |
144 | ||
eaef7e3f | 145 | u8 digest[SHA512_DIGEST_SIZE] OMAP_ALIGNED; |
8628e7c8 | 146 | size_t digcnt; |
8628e7c8 DK |
147 | size_t bufcnt; |
148 | size_t buflen; | |
149 | dma_addr_t dma_addr; | |
150 | ||
151 | /* walk state */ | |
152 | struct scatterlist *sg; | |
dfd061d5 | 153 | struct scatterlist sgl; |
8628e7c8 DK |
154 | unsigned int offset; /* offset in current sg */ |
155 | unsigned int total; /* total request */ | |
798eed5d DK |
156 | |
157 | u8 buffer[0] OMAP_ALIGNED; | |
8628e7c8 DK |
158 | }; |
159 | ||
160 | struct omap_sham_hmac_ctx { | |
161 | struct crypto_shash *shash; | |
eaef7e3f LV |
162 | u8 ipad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; |
163 | u8 opad[SHA512_BLOCK_SIZE] OMAP_ALIGNED; | |
8628e7c8 DK |
164 | }; |
165 | ||
166 | struct omap_sham_ctx { | |
167 | struct omap_sham_dev *dd; | |
168 | ||
169 | unsigned long flags; | |
170 | ||
171 | /* fallback stuff */ | |
172 | struct crypto_shash *fallback; | |
173 | ||
174 | struct omap_sham_hmac_ctx base[0]; | |
175 | }; | |
176 | ||
177 | #define OMAP_SHAM_QUEUE_LENGTH 1 | |
178 | ||
d20fb18b MG |
179 | struct omap_sham_algs_info { |
180 | struct ahash_alg *algs_list; | |
181 | unsigned int size; | |
182 | unsigned int registered; | |
183 | }; | |
184 | ||
0d373d60 | 185 | struct omap_sham_pdata { |
d20fb18b MG |
186 | struct omap_sham_algs_info *algs_info; |
187 | unsigned int algs_info_size; | |
0d373d60 MG |
188 | unsigned long flags; |
189 | int digest_size; | |
190 | ||
191 | void (*copy_hash)(struct ahash_request *req, int out); | |
192 | void (*write_ctrl)(struct omap_sham_dev *dd, size_t length, | |
193 | int final, int dma); | |
194 | void (*trigger)(struct omap_sham_dev *dd, size_t length); | |
195 | int (*poll_irq)(struct omap_sham_dev *dd); | |
196 | irqreturn_t (*intr_hdlr)(int irq, void *dev_id); | |
197 | ||
198 | u32 odigest_ofs; | |
199 | u32 idigest_ofs; | |
200 | u32 din_ofs; | |
201 | u32 digcnt_ofs; | |
202 | u32 rev_ofs; | |
203 | u32 mask_ofs; | |
204 | u32 sysstatus_ofs; | |
eaef7e3f LV |
205 | u32 mode_ofs; |
206 | u32 length_ofs; | |
0d373d60 MG |
207 | |
208 | u32 major_mask; | |
209 | u32 major_shift; | |
210 | u32 minor_mask; | |
211 | u32 minor_shift; | |
212 | }; | |
213 | ||
8628e7c8 DK |
214 | struct omap_sham_dev { |
215 | struct list_head list; | |
216 | unsigned long phys_base; | |
217 | struct device *dev; | |
218 | void __iomem *io_base; | |
219 | int irq; | |
8628e7c8 | 220 | spinlock_t lock; |
3e133c8b | 221 | int err; |
03feec9c | 222 | unsigned int dma; |
dfd061d5 | 223 | struct dma_chan *dma_lch; |
8628e7c8 | 224 | struct tasklet_struct done_task; |
b8411ccd | 225 | u8 polling_mode; |
8628e7c8 DK |
226 | |
227 | unsigned long flags; | |
228 | struct crypto_queue queue; | |
229 | struct ahash_request *req; | |
0d373d60 MG |
230 | |
231 | const struct omap_sham_pdata *pdata; | |
8628e7c8 DK |
232 | }; |
233 | ||
234 | struct omap_sham_drv { | |
235 | struct list_head dev_list; | |
236 | spinlock_t lock; | |
237 | unsigned long flags; | |
238 | }; | |
239 | ||
240 | static struct omap_sham_drv sham = { | |
241 | .dev_list = LIST_HEAD_INIT(sham.dev_list), | |
242 | .lock = __SPIN_LOCK_UNLOCKED(sham.lock), | |
243 | }; | |
244 | ||
245 | static inline u32 omap_sham_read(struct omap_sham_dev *dd, u32 offset) | |
246 | { | |
247 | return __raw_readl(dd->io_base + offset); | |
248 | } | |
249 | ||
250 | static inline void omap_sham_write(struct omap_sham_dev *dd, | |
251 | u32 offset, u32 value) | |
252 | { | |
253 | __raw_writel(value, dd->io_base + offset); | |
254 | } | |
255 | ||
256 | static inline void omap_sham_write_mask(struct omap_sham_dev *dd, u32 address, | |
257 | u32 value, u32 mask) | |
258 | { | |
259 | u32 val; | |
260 | ||
261 | val = omap_sham_read(dd, address); | |
262 | val &= ~mask; | |
263 | val |= value; | |
264 | omap_sham_write(dd, address, val); | |
265 | } | |
266 | ||
267 | static inline int omap_sham_wait(struct omap_sham_dev *dd, u32 offset, u32 bit) | |
268 | { | |
269 | unsigned long timeout = jiffies + DEFAULT_TIMEOUT_INTERVAL; | |
270 | ||
271 | while (!(omap_sham_read(dd, offset) & bit)) { | |
272 | if (time_is_before_jiffies(timeout)) | |
273 | return -ETIMEDOUT; | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
0d373d60 | 279 | static void omap_sham_copy_hash_omap2(struct ahash_request *req, int out) |
8628e7c8 DK |
280 | { |
281 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
0d373d60 | 282 | struct omap_sham_dev *dd = ctx->dd; |
0c3cf4cc | 283 | u32 *hash = (u32 *)ctx->digest; |
8628e7c8 DK |
284 | int i; |
285 | ||
0d373d60 | 286 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { |
3c8d758a | 287 | if (out) |
0d373d60 | 288 | hash[i] = omap_sham_read(dd, SHA_REG_IDIGEST(dd, i)); |
3c8d758a | 289 | else |
0d373d60 MG |
290 | omap_sham_write(dd, SHA_REG_IDIGEST(dd, i), hash[i]); |
291 | } | |
292 | } | |
293 | ||
294 | static void omap_sham_copy_hash_omap4(struct ahash_request *req, int out) | |
295 | { | |
296 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
297 | struct omap_sham_dev *dd = ctx->dd; | |
298 | int i; | |
299 | ||
300 | if (ctx->flags & BIT(FLAGS_HMAC)) { | |
301 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); | |
302 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); | |
303 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
304 | u32 *opad = (u32 *)bctx->opad; | |
305 | ||
306 | for (i = 0; i < dd->pdata->digest_size / sizeof(u32); i++) { | |
307 | if (out) | |
308 | opad[i] = omap_sham_read(dd, | |
eaef7e3f | 309 | SHA_REG_ODIGEST(dd, i)); |
0d373d60 | 310 | else |
eaef7e3f | 311 | omap_sham_write(dd, SHA_REG_ODIGEST(dd, i), |
0d373d60 MG |
312 | opad[i]); |
313 | } | |
3c8d758a | 314 | } |
0d373d60 MG |
315 | |
316 | omap_sham_copy_hash_omap2(req, out); | |
3c8d758a DK |
317 | } |
318 | ||
319 | static void omap_sham_copy_ready_hash(struct ahash_request *req) | |
320 | { | |
321 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
322 | u32 *in = (u32 *)ctx->digest; | |
323 | u32 *hash = (u32 *)req->result; | |
0d373d60 | 324 | int i, d, big_endian = 0; |
3c8d758a DK |
325 | |
326 | if (!hash) | |
327 | return; | |
328 | ||
0d373d60 MG |
329 | switch (ctx->flags & FLAGS_MODE_MASK) { |
330 | case FLAGS_MODE_MD5: | |
331 | d = MD5_DIGEST_SIZE / sizeof(u32); | |
332 | break; | |
333 | case FLAGS_MODE_SHA1: | |
334 | /* OMAP2 SHA1 is big endian */ | |
335 | if (test_bit(FLAGS_BE32_SHA1, &ctx->dd->flags)) | |
336 | big_endian = 1; | |
337 | d = SHA1_DIGEST_SIZE / sizeof(u32); | |
338 | break; | |
d20fb18b MG |
339 | case FLAGS_MODE_SHA224: |
340 | d = SHA224_DIGEST_SIZE / sizeof(u32); | |
341 | break; | |
342 | case FLAGS_MODE_SHA256: | |
343 | d = SHA256_DIGEST_SIZE / sizeof(u32); | |
344 | break; | |
eaef7e3f LV |
345 | case FLAGS_MODE_SHA384: |
346 | d = SHA384_DIGEST_SIZE / sizeof(u32); | |
347 | break; | |
348 | case FLAGS_MODE_SHA512: | |
349 | d = SHA512_DIGEST_SIZE / sizeof(u32); | |
350 | break; | |
0d373d60 MG |
351 | default: |
352 | d = 0; | |
353 | } | |
354 | ||
355 | if (big_endian) | |
356 | for (i = 0; i < d; i++) | |
3c8d758a | 357 | hash[i] = be32_to_cpu(in[i]); |
0d373d60 MG |
358 | else |
359 | for (i = 0; i < d; i++) | |
3c8d758a | 360 | hash[i] = le32_to_cpu(in[i]); |
8628e7c8 DK |
361 | } |
362 | ||
798eed5d | 363 | static int omap_sham_hw_init(struct omap_sham_dev *dd) |
8628e7c8 | 364 | { |
604c3103 PR |
365 | int err; |
366 | ||
367 | err = pm_runtime_get_sync(dd->dev); | |
368 | if (err < 0) { | |
369 | dev_err(dd->dev, "failed to get sync: %d\n", err); | |
370 | return err; | |
371 | } | |
8628e7c8 | 372 | |
a929cbee | 373 | if (!test_bit(FLAGS_INIT, &dd->flags)) { |
a929cbee | 374 | set_bit(FLAGS_INIT, &dd->flags); |
798eed5d DK |
375 | dd->err = 0; |
376 | } | |
8628e7c8 | 377 | |
798eed5d DK |
378 | return 0; |
379 | } | |
380 | ||
0d373d60 | 381 | static void omap_sham_write_ctrl_omap2(struct omap_sham_dev *dd, size_t length, |
798eed5d DK |
382 | int final, int dma) |
383 | { | |
384 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
385 | u32 val = length << 5, mask; | |
386 | ||
387 | if (likely(ctx->digcnt)) | |
0d373d60 | 388 | omap_sham_write(dd, SHA_REG_DIGCNT(dd), ctx->digcnt); |
8628e7c8 | 389 | |
0d373d60 | 390 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), |
8628e7c8 DK |
391 | SHA_REG_MASK_IT_EN | (dma ? SHA_REG_MASK_DMA_EN : 0), |
392 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); | |
393 | /* | |
394 | * Setting ALGO_CONST only for the first iteration | |
395 | * and CLOSE_HASH only for the last one. | |
396 | */ | |
0d373d60 | 397 | if ((ctx->flags & FLAGS_MODE_MASK) == FLAGS_MODE_SHA1) |
8628e7c8 DK |
398 | val |= SHA_REG_CTRL_ALGO; |
399 | if (!ctx->digcnt) | |
400 | val |= SHA_REG_CTRL_ALGO_CONST; | |
401 | if (final) | |
402 | val |= SHA_REG_CTRL_CLOSE_HASH; | |
403 | ||
404 | mask = SHA_REG_CTRL_ALGO_CONST | SHA_REG_CTRL_CLOSE_HASH | | |
405 | SHA_REG_CTRL_ALGO | SHA_REG_CTRL_LENGTH; | |
406 | ||
407 | omap_sham_write_mask(dd, SHA_REG_CTRL, val, mask); | |
8628e7c8 DK |
408 | } |
409 | ||
0d373d60 MG |
410 | static void omap_sham_trigger_omap2(struct omap_sham_dev *dd, size_t length) |
411 | { | |
412 | } | |
413 | ||
414 | static int omap_sham_poll_irq_omap2(struct omap_sham_dev *dd) | |
415 | { | |
416 | return omap_sham_wait(dd, SHA_REG_CTRL, SHA_REG_CTRL_INPUT_READY); | |
417 | } | |
418 | ||
eaef7e3f LV |
419 | static int get_block_size(struct omap_sham_reqctx *ctx) |
420 | { | |
421 | int d; | |
422 | ||
423 | switch (ctx->flags & FLAGS_MODE_MASK) { | |
424 | case FLAGS_MODE_MD5: | |
425 | case FLAGS_MODE_SHA1: | |
426 | d = SHA1_BLOCK_SIZE; | |
427 | break; | |
428 | case FLAGS_MODE_SHA224: | |
429 | case FLAGS_MODE_SHA256: | |
430 | d = SHA256_BLOCK_SIZE; | |
431 | break; | |
432 | case FLAGS_MODE_SHA384: | |
433 | case FLAGS_MODE_SHA512: | |
434 | d = SHA512_BLOCK_SIZE; | |
435 | break; | |
436 | default: | |
437 | d = 0; | |
438 | } | |
439 | ||
440 | return d; | |
441 | } | |
442 | ||
0d373d60 MG |
443 | static void omap_sham_write_n(struct omap_sham_dev *dd, u32 offset, |
444 | u32 *value, int count) | |
445 | { | |
446 | for (; count--; value++, offset += 4) | |
447 | omap_sham_write(dd, offset, *value); | |
448 | } | |
449 | ||
450 | static void omap_sham_write_ctrl_omap4(struct omap_sham_dev *dd, size_t length, | |
451 | int final, int dma) | |
452 | { | |
453 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
454 | u32 val, mask; | |
455 | ||
456 | /* | |
457 | * Setting ALGO_CONST only for the first iteration and | |
458 | * CLOSE_HASH only for the last one. Note that flags mode bits | |
459 | * correspond to algorithm encoding in mode register. | |
460 | */ | |
eaef7e3f | 461 | val = (ctx->flags & FLAGS_MODE_MASK) >> (FLAGS_MODE_SHIFT); |
0d373d60 MG |
462 | if (!ctx->digcnt) { |
463 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(dd->req); | |
464 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); | |
465 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
eaef7e3f | 466 | int bs, nr_dr; |
0d373d60 MG |
467 | |
468 | val |= SHA_REG_MODE_ALGO_CONSTANT; | |
469 | ||
470 | if (ctx->flags & BIT(FLAGS_HMAC)) { | |
eaef7e3f LV |
471 | bs = get_block_size(ctx); |
472 | nr_dr = bs / (2 * sizeof(u32)); | |
0d373d60 | 473 | val |= SHA_REG_MODE_HMAC_KEY_PROC; |
eaef7e3f LV |
474 | omap_sham_write_n(dd, SHA_REG_ODIGEST(dd, 0), |
475 | (u32 *)bctx->ipad, nr_dr); | |
476 | omap_sham_write_n(dd, SHA_REG_IDIGEST(dd, 0), | |
477 | (u32 *)bctx->ipad + nr_dr, nr_dr); | |
478 | ctx->digcnt += bs; | |
0d373d60 MG |
479 | } |
480 | } | |
481 | ||
482 | if (final) { | |
483 | val |= SHA_REG_MODE_CLOSE_HASH; | |
484 | ||
485 | if (ctx->flags & BIT(FLAGS_HMAC)) | |
486 | val |= SHA_REG_MODE_HMAC_OUTER_HASH; | |
487 | } | |
488 | ||
489 | mask = SHA_REG_MODE_ALGO_CONSTANT | SHA_REG_MODE_CLOSE_HASH | | |
490 | SHA_REG_MODE_ALGO_MASK | SHA_REG_MODE_HMAC_OUTER_HASH | | |
491 | SHA_REG_MODE_HMAC_KEY_PROC; | |
492 | ||
493 | dev_dbg(dd->dev, "ctrl: %08x, flags: %08lx\n", val, ctx->flags); | |
eaef7e3f | 494 | omap_sham_write_mask(dd, SHA_REG_MODE(dd), val, mask); |
0d373d60 MG |
495 | omap_sham_write(dd, SHA_REG_IRQENA, SHA_REG_IRQENA_OUTPUT_RDY); |
496 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), | |
497 | SHA_REG_MASK_IT_EN | | |
498 | (dma ? SHA_REG_MASK_DMA_EN : 0), | |
499 | SHA_REG_MASK_IT_EN | SHA_REG_MASK_DMA_EN); | |
500 | } | |
501 | ||
502 | static void omap_sham_trigger_omap4(struct omap_sham_dev *dd, size_t length) | |
503 | { | |
eaef7e3f | 504 | omap_sham_write(dd, SHA_REG_LENGTH(dd), length); |
0d373d60 MG |
505 | } |
506 | ||
507 | static int omap_sham_poll_irq_omap4(struct omap_sham_dev *dd) | |
508 | { | |
509 | return omap_sham_wait(dd, SHA_REG_IRQSTATUS, | |
510 | SHA_REG_IRQSTATUS_INPUT_RDY); | |
511 | } | |
512 | ||
8628e7c8 DK |
513 | static int omap_sham_xmit_cpu(struct omap_sham_dev *dd, const u8 *buf, |
514 | size_t length, int final) | |
515 | { | |
516 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
b8411ccd | 517 | int count, len32, bs32, offset = 0; |
8628e7c8 DK |
518 | const u32 *buffer = (const u32 *)buf; |
519 | ||
520 | dev_dbg(dd->dev, "xmit_cpu: digcnt: %d, length: %d, final: %d\n", | |
521 | ctx->digcnt, length, final); | |
522 | ||
0d373d60 MG |
523 | dd->pdata->write_ctrl(dd, length, final, 0); |
524 | dd->pdata->trigger(dd, length); | |
8628e7c8 | 525 | |
3e133c8b DK |
526 | /* should be non-zero before next lines to disable clocks later */ |
527 | ctx->digcnt += length; | |
528 | ||
8628e7c8 | 529 | if (final) |
ed3ea9a8 | 530 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
8628e7c8 | 531 | |
6c63db82 DK |
532 | set_bit(FLAGS_CPU, &dd->flags); |
533 | ||
8628e7c8 | 534 | len32 = DIV_ROUND_UP(length, sizeof(u32)); |
b8411ccd LV |
535 | bs32 = get_block_size(ctx) / sizeof(u32); |
536 | ||
537 | while (len32) { | |
538 | if (dd->pdata->poll_irq(dd)) | |
539 | return -ETIMEDOUT; | |
8628e7c8 | 540 | |
b8411ccd LV |
541 | for (count = 0; count < min(len32, bs32); count++, offset++) |
542 | omap_sham_write(dd, SHA_REG_DIN(dd, count), | |
543 | buffer[offset]); | |
544 | len32 -= min(len32, bs32); | |
545 | } | |
8628e7c8 DK |
546 | |
547 | return -EINPROGRESS; | |
548 | } | |
549 | ||
dfd061d5 MG |
550 | static void omap_sham_dma_callback(void *param) |
551 | { | |
552 | struct omap_sham_dev *dd = param; | |
553 | ||
554 | set_bit(FLAGS_DMA_READY, &dd->flags); | |
555 | tasklet_schedule(&dd->done_task); | |
556 | } | |
dfd061d5 | 557 | |
8628e7c8 | 558 | static int omap_sham_xmit_dma(struct omap_sham_dev *dd, dma_addr_t dma_addr, |
dfd061d5 | 559 | size_t length, int final, int is_sg) |
8628e7c8 DK |
560 | { |
561 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
dfd061d5 MG |
562 | struct dma_async_tx_descriptor *tx; |
563 | struct dma_slave_config cfg; | |
f5e46260 | 564 | int len32, ret, dma_min = get_block_size(ctx); |
8628e7c8 DK |
565 | |
566 | dev_dbg(dd->dev, "xmit_dma: digcnt: %d, length: %d, final: %d\n", | |
567 | ctx->digcnt, length, final); | |
8628e7c8 | 568 | |
dfd061d5 MG |
569 | memset(&cfg, 0, sizeof(cfg)); |
570 | ||
0d373d60 | 571 | cfg.dst_addr = dd->phys_base + SHA_REG_DIN(dd, 0); |
dfd061d5 | 572 | cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; |
f5e46260 | 573 | cfg.dst_maxburst = dma_min / DMA_SLAVE_BUSWIDTH_4_BYTES; |
dfd061d5 MG |
574 | |
575 | ret = dmaengine_slave_config(dd->dma_lch, &cfg); | |
576 | if (ret) { | |
577 | pr_err("omap-sham: can't configure dmaengine slave: %d\n", ret); | |
578 | return ret; | |
579 | } | |
580 | ||
f5e46260 | 581 | len32 = DIV_ROUND_UP(length, dma_min) * dma_min; |
dfd061d5 MG |
582 | |
583 | if (is_sg) { | |
584 | /* | |
585 | * The SG entry passed in may not have the 'length' member | |
586 | * set correctly so use a local SG entry (sgl) with the | |
587 | * proper value for 'length' instead. If this is not done, | |
588 | * the dmaengine may try to DMA the incorrect amount of data. | |
589 | */ | |
590 | sg_init_table(&ctx->sgl, 1); | |
89e2a840 | 591 | sg_assign_page(&ctx->sgl, sg_page(ctx->sg)); |
dfd061d5 MG |
592 | ctx->sgl.offset = ctx->sg->offset; |
593 | sg_dma_len(&ctx->sgl) = len32; | |
594 | sg_dma_address(&ctx->sgl) = sg_dma_address(ctx->sg); | |
595 | ||
596 | tx = dmaengine_prep_slave_sg(dd->dma_lch, &ctx->sgl, 1, | |
597 | DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); | |
598 | } else { | |
599 | tx = dmaengine_prep_slave_single(dd->dma_lch, dma_addr, len32, | |
600 | DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); | |
601 | } | |
8628e7c8 | 602 | |
dfd061d5 MG |
603 | if (!tx) { |
604 | dev_err(dd->dev, "prep_slave_sg/single() failed\n"); | |
605 | return -EINVAL; | |
606 | } | |
8628e7c8 | 607 | |
dfd061d5 MG |
608 | tx->callback = omap_sham_dma_callback; |
609 | tx->callback_param = dd; | |
8628e7c8 | 610 | |
0d373d60 | 611 | dd->pdata->write_ctrl(dd, length, final, 1); |
8628e7c8 DK |
612 | |
613 | ctx->digcnt += length; | |
614 | ||
615 | if (final) | |
ed3ea9a8 | 616 | set_bit(FLAGS_FINAL, &dd->flags); /* catch last interrupt */ |
8628e7c8 | 617 | |
a929cbee | 618 | set_bit(FLAGS_DMA_ACTIVE, &dd->flags); |
8628e7c8 | 619 | |
dfd061d5 MG |
620 | dmaengine_submit(tx); |
621 | dma_async_issue_pending(dd->dma_lch); | |
8628e7c8 | 622 | |
0d373d60 | 623 | dd->pdata->trigger(dd, length); |
8628e7c8 DK |
624 | |
625 | return -EINPROGRESS; | |
626 | } | |
627 | ||
628 | static size_t omap_sham_append_buffer(struct omap_sham_reqctx *ctx, | |
629 | const u8 *data, size_t length) | |
630 | { | |
631 | size_t count = min(length, ctx->buflen - ctx->bufcnt); | |
632 | ||
633 | count = min(count, ctx->total); | |
634 | if (count <= 0) | |
635 | return 0; | |
636 | memcpy(ctx->buffer + ctx->bufcnt, data, count); | |
637 | ctx->bufcnt += count; | |
638 | ||
639 | return count; | |
640 | } | |
641 | ||
642 | static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx) | |
643 | { | |
644 | size_t count; | |
26a05489 | 645 | const u8 *vaddr; |
8628e7c8 DK |
646 | |
647 | while (ctx->sg) { | |
26a05489 | 648 | vaddr = kmap_atomic(sg_page(ctx->sg)); |
13cf394c | 649 | vaddr += ctx->sg->offset; |
26a05489 | 650 | |
8628e7c8 | 651 | count = omap_sham_append_buffer(ctx, |
26a05489 | 652 | vaddr + ctx->offset, |
8628e7c8 | 653 | ctx->sg->length - ctx->offset); |
26a05489 JF |
654 | |
655 | kunmap_atomic((void *)vaddr); | |
656 | ||
8628e7c8 DK |
657 | if (!count) |
658 | break; | |
659 | ctx->offset += count; | |
660 | ctx->total -= count; | |
661 | if (ctx->offset == ctx->sg->length) { | |
662 | ctx->sg = sg_next(ctx->sg); | |
663 | if (ctx->sg) | |
664 | ctx->offset = 0; | |
665 | else | |
666 | ctx->total = 0; | |
667 | } | |
668 | } | |
669 | ||
670 | return 0; | |
671 | } | |
672 | ||
798eed5d DK |
673 | static int omap_sham_xmit_dma_map(struct omap_sham_dev *dd, |
674 | struct omap_sham_reqctx *ctx, | |
675 | size_t length, int final) | |
676 | { | |
dfd061d5 MG |
677 | int ret; |
678 | ||
798eed5d DK |
679 | ctx->dma_addr = dma_map_single(dd->dev, ctx->buffer, ctx->buflen, |
680 | DMA_TO_DEVICE); | |
681 | if (dma_mapping_error(dd->dev, ctx->dma_addr)) { | |
682 | dev_err(dd->dev, "dma %u bytes error\n", ctx->buflen); | |
683 | return -EINVAL; | |
684 | } | |
685 | ||
ea1fd224 | 686 | ctx->flags &= ~BIT(FLAGS_SG); |
887c883e | 687 | |
dfd061d5 | 688 | ret = omap_sham_xmit_dma(dd, ctx->dma_addr, length, final, 0); |
0d373d60 | 689 | if (ret != -EINPROGRESS) |
dfd061d5 MG |
690 | dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen, |
691 | DMA_TO_DEVICE); | |
692 | ||
693 | return ret; | |
798eed5d DK |
694 | } |
695 | ||
8628e7c8 DK |
696 | static int omap_sham_update_dma_slow(struct omap_sham_dev *dd) |
697 | { | |
698 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
699 | unsigned int final; | |
700 | size_t count; | |
701 | ||
8628e7c8 DK |
702 | omap_sham_append_sg(ctx); |
703 | ||
ea1fd224 | 704 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; |
8628e7c8 DK |
705 | |
706 | dev_dbg(dd->dev, "slow: bufcnt: %u, digcnt: %d, final: %d\n", | |
707 | ctx->bufcnt, ctx->digcnt, final); | |
708 | ||
709 | if (final || (ctx->bufcnt == ctx->buflen && ctx->total)) { | |
710 | count = ctx->bufcnt; | |
711 | ctx->bufcnt = 0; | |
798eed5d | 712 | return omap_sham_xmit_dma_map(dd, ctx, count, final); |
8628e7c8 DK |
713 | } |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
887c883e DK |
718 | /* Start address alignment */ |
719 | #define SG_AA(sg) (IS_ALIGNED(sg->offset, sizeof(u32))) | |
720 | /* SHA1 block size alignment */ | |
eaef7e3f | 721 | #define SG_SA(sg, bs) (IS_ALIGNED(sg->length, bs)) |
887c883e DK |
722 | |
723 | static int omap_sham_update_dma_start(struct omap_sham_dev *dd) | |
8628e7c8 DK |
724 | { |
725 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
887c883e DK |
726 | unsigned int length, final, tail; |
727 | struct scatterlist *sg; | |
eaef7e3f | 728 | int ret, bs; |
887c883e DK |
729 | |
730 | if (!ctx->total) | |
731 | return 0; | |
732 | ||
733 | if (ctx->bufcnt || ctx->offset) | |
734 | return omap_sham_update_dma_slow(dd); | |
735 | ||
dfd061d5 MG |
736 | /* |
737 | * Don't use the sg interface when the transfer size is less | |
738 | * than the number of elements in a DMA frame. Otherwise, | |
739 | * the dmaengine infrastructure will calculate that it needs | |
740 | * to transfer 0 frames which ultimately fails. | |
741 | */ | |
f5e46260 | 742 | if (ctx->total < get_block_size(ctx)) |
dfd061d5 | 743 | return omap_sham_update_dma_slow(dd); |
dfd061d5 | 744 | |
887c883e DK |
745 | dev_dbg(dd->dev, "fast: digcnt: %d, bufcnt: %u, total: %u\n", |
746 | ctx->digcnt, ctx->bufcnt, ctx->total); | |
747 | ||
748 | sg = ctx->sg; | |
eaef7e3f | 749 | bs = get_block_size(ctx); |
8628e7c8 | 750 | |
887c883e DK |
751 | if (!SG_AA(sg)) |
752 | return omap_sham_update_dma_slow(dd); | |
8628e7c8 | 753 | |
eaef7e3f LV |
754 | if (!sg_is_last(sg) && !SG_SA(sg, bs)) |
755 | /* size is not BLOCK_SIZE aligned */ | |
887c883e DK |
756 | return omap_sham_update_dma_slow(dd); |
757 | ||
758 | length = min(ctx->total, sg->length); | |
759 | ||
760 | if (sg_is_last(sg)) { | |
ea1fd224 | 761 | if (!(ctx->flags & BIT(FLAGS_FINUP))) { |
eaef7e3f LV |
762 | /* not last sg must be BLOCK_SIZE aligned */ |
763 | tail = length & (bs - 1); | |
887c883e DK |
764 | /* without finup() we need one block to close hash */ |
765 | if (!tail) | |
eaef7e3f | 766 | tail = bs; |
887c883e DK |
767 | length -= tail; |
768 | } | |
769 | } | |
8628e7c8 DK |
770 | |
771 | if (!dma_map_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE)) { | |
772 | dev_err(dd->dev, "dma_map_sg error\n"); | |
773 | return -EINVAL; | |
774 | } | |
775 | ||
ea1fd224 | 776 | ctx->flags |= BIT(FLAGS_SG); |
887c883e | 777 | |
8628e7c8 | 778 | ctx->total -= length; |
887c883e DK |
779 | ctx->offset = length; /* offset where to start slow */ |
780 | ||
ea1fd224 | 781 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; |
8628e7c8 | 782 | |
dfd061d5 | 783 | ret = omap_sham_xmit_dma(dd, sg_dma_address(ctx->sg), length, final, 1); |
0d373d60 | 784 | if (ret != -EINPROGRESS) |
dfd061d5 MG |
785 | dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); |
786 | ||
787 | return ret; | |
8628e7c8 DK |
788 | } |
789 | ||
790 | static int omap_sham_update_cpu(struct omap_sham_dev *dd) | |
791 | { | |
792 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
b8411ccd LV |
793 | int bufcnt, final; |
794 | ||
795 | if (!ctx->total) | |
796 | return 0; | |
8628e7c8 DK |
797 | |
798 | omap_sham_append_sg(ctx); | |
b8411ccd LV |
799 | |
800 | final = (ctx->flags & BIT(FLAGS_FINUP)) && !ctx->total; | |
801 | ||
802 | dev_dbg(dd->dev, "cpu: bufcnt: %u, digcnt: %d, final: %d\n", | |
803 | ctx->bufcnt, ctx->digcnt, final); | |
804 | ||
acef7b0f LV |
805 | if (final || (ctx->bufcnt == ctx->buflen && ctx->total)) { |
806 | bufcnt = ctx->bufcnt; | |
807 | ctx->bufcnt = 0; | |
808 | return omap_sham_xmit_cpu(dd, ctx->buffer, bufcnt, final); | |
809 | } | |
8628e7c8 | 810 | |
acef7b0f | 811 | return 0; |
8628e7c8 DK |
812 | } |
813 | ||
814 | static int omap_sham_update_dma_stop(struct omap_sham_dev *dd) | |
815 | { | |
816 | struct omap_sham_reqctx *ctx = ahash_request_ctx(dd->req); | |
817 | ||
dfd061d5 | 818 | dmaengine_terminate_all(dd->dma_lch); |
dfd061d5 | 819 | |
ea1fd224 | 820 | if (ctx->flags & BIT(FLAGS_SG)) { |
8628e7c8 | 821 | dma_unmap_sg(dd->dev, ctx->sg, 1, DMA_TO_DEVICE); |
887c883e DK |
822 | if (ctx->sg->length == ctx->offset) { |
823 | ctx->sg = sg_next(ctx->sg); | |
824 | if (ctx->sg) | |
825 | ctx->offset = 0; | |
826 | } | |
827 | } else { | |
798eed5d DK |
828 | dma_unmap_single(dd->dev, ctx->dma_addr, ctx->buflen, |
829 | DMA_TO_DEVICE); | |
887c883e | 830 | } |
8628e7c8 DK |
831 | |
832 | return 0; | |
833 | } | |
834 | ||
8628e7c8 DK |
835 | static int omap_sham_init(struct ahash_request *req) |
836 | { | |
837 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); | |
838 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); | |
839 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
840 | struct omap_sham_dev *dd = NULL, *tmp; | |
eaef7e3f | 841 | int bs = 0; |
8628e7c8 DK |
842 | |
843 | spin_lock_bh(&sham.lock); | |
844 | if (!tctx->dd) { | |
845 | list_for_each_entry(tmp, &sham.dev_list, list) { | |
846 | dd = tmp; | |
847 | break; | |
848 | } | |
849 | tctx->dd = dd; | |
850 | } else { | |
851 | dd = tctx->dd; | |
852 | } | |
853 | spin_unlock_bh(&sham.lock); | |
854 | ||
855 | ctx->dd = dd; | |
856 | ||
857 | ctx->flags = 0; | |
858 | ||
8628e7c8 DK |
859 | dev_dbg(dd->dev, "init: digest size: %d\n", |
860 | crypto_ahash_digestsize(tfm)); | |
861 | ||
0d373d60 MG |
862 | switch (crypto_ahash_digestsize(tfm)) { |
863 | case MD5_DIGEST_SIZE: | |
864 | ctx->flags |= FLAGS_MODE_MD5; | |
eaef7e3f | 865 | bs = SHA1_BLOCK_SIZE; |
0d373d60 MG |
866 | break; |
867 | case SHA1_DIGEST_SIZE: | |
868 | ctx->flags |= FLAGS_MODE_SHA1; | |
eaef7e3f | 869 | bs = SHA1_BLOCK_SIZE; |
0d373d60 | 870 | break; |
d20fb18b MG |
871 | case SHA224_DIGEST_SIZE: |
872 | ctx->flags |= FLAGS_MODE_SHA224; | |
eaef7e3f | 873 | bs = SHA224_BLOCK_SIZE; |
d20fb18b MG |
874 | break; |
875 | case SHA256_DIGEST_SIZE: | |
876 | ctx->flags |= FLAGS_MODE_SHA256; | |
eaef7e3f LV |
877 | bs = SHA256_BLOCK_SIZE; |
878 | break; | |
879 | case SHA384_DIGEST_SIZE: | |
880 | ctx->flags |= FLAGS_MODE_SHA384; | |
881 | bs = SHA384_BLOCK_SIZE; | |
882 | break; | |
883 | case SHA512_DIGEST_SIZE: | |
884 | ctx->flags |= FLAGS_MODE_SHA512; | |
885 | bs = SHA512_BLOCK_SIZE; | |
d20fb18b | 886 | break; |
0d373d60 | 887 | } |
8628e7c8 DK |
888 | |
889 | ctx->bufcnt = 0; | |
890 | ctx->digcnt = 0; | |
798eed5d | 891 | ctx->buflen = BUFLEN; |
8628e7c8 | 892 | |
ea1fd224 | 893 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
0d373d60 MG |
894 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
895 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
896 | ||
eaef7e3f LV |
897 | memcpy(ctx->buffer, bctx->ipad, bs); |
898 | ctx->bufcnt = bs; | |
0d373d60 | 899 | } |
8628e7c8 | 900 | |
ea1fd224 | 901 | ctx->flags |= BIT(FLAGS_HMAC); |
8628e7c8 DK |
902 | } |
903 | ||
904 | return 0; | |
905 | ||
906 | } | |
907 | ||
908 | static int omap_sham_update_req(struct omap_sham_dev *dd) | |
909 | { | |
910 | struct ahash_request *req = dd->req; | |
911 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
912 | int err; | |
913 | ||
914 | dev_dbg(dd->dev, "update_req: total: %u, digcnt: %d, finup: %d\n", | |
ea1fd224 | 915 | ctx->total, ctx->digcnt, (ctx->flags & BIT(FLAGS_FINUP)) != 0); |
8628e7c8 | 916 | |
ea1fd224 | 917 | if (ctx->flags & BIT(FLAGS_CPU)) |
8628e7c8 | 918 | err = omap_sham_update_cpu(dd); |
8628e7c8 | 919 | else |
887c883e | 920 | err = omap_sham_update_dma_start(dd); |
8628e7c8 DK |
921 | |
922 | /* wait for dma completion before can take more data */ | |
923 | dev_dbg(dd->dev, "update: err: %d, digcnt: %d\n", err, ctx->digcnt); | |
924 | ||
925 | return err; | |
926 | } | |
927 | ||
928 | static int omap_sham_final_req(struct omap_sham_dev *dd) | |
929 | { | |
930 | struct ahash_request *req = dd->req; | |
931 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
932 | int err = 0, use_dma = 1; | |
933 | ||
b8411ccd LV |
934 | if ((ctx->bufcnt <= get_block_size(ctx)) || dd->polling_mode) |
935 | /* | |
936 | * faster to handle last block with cpu or | |
937 | * use cpu when dma is not present. | |
938 | */ | |
8628e7c8 DK |
939 | use_dma = 0; |
940 | ||
941 | if (use_dma) | |
798eed5d | 942 | err = omap_sham_xmit_dma_map(dd, ctx, ctx->bufcnt, 1); |
8628e7c8 DK |
943 | else |
944 | err = omap_sham_xmit_cpu(dd, ctx->buffer, ctx->bufcnt, 1); | |
945 | ||
946 | ctx->bufcnt = 0; | |
947 | ||
8628e7c8 DK |
948 | dev_dbg(dd->dev, "final_req: err: %d\n", err); |
949 | ||
950 | return err; | |
951 | } | |
952 | ||
bf362759 | 953 | static int omap_sham_finish_hmac(struct ahash_request *req) |
8628e7c8 DK |
954 | { |
955 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); | |
956 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
957 | int bs = crypto_shash_blocksize(bctx->shash); | |
958 | int ds = crypto_shash_digestsize(bctx->shash); | |
7bc53c3f | 959 | SHASH_DESC_ON_STACK(shash, bctx->shash); |
8628e7c8 | 960 | |
7bc53c3f BW |
961 | shash->tfm = bctx->shash; |
962 | shash->flags = 0; /* not CRYPTO_TFM_REQ_MAY_SLEEP */ | |
8628e7c8 | 963 | |
7bc53c3f BW |
964 | return crypto_shash_init(shash) ?: |
965 | crypto_shash_update(shash, bctx->opad, bs) ?: | |
966 | crypto_shash_finup(shash, req->result, ds, req->result); | |
bf362759 DK |
967 | } |
968 | ||
969 | static int omap_sham_finish(struct ahash_request *req) | |
970 | { | |
971 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
972 | struct omap_sham_dev *dd = ctx->dd; | |
973 | int err = 0; | |
974 | ||
975 | if (ctx->digcnt) { | |
976 | omap_sham_copy_ready_hash(req); | |
0d373d60 MG |
977 | if ((ctx->flags & BIT(FLAGS_HMAC)) && |
978 | !test_bit(FLAGS_AUTO_XOR, &dd->flags)) | |
bf362759 DK |
979 | err = omap_sham_finish_hmac(req); |
980 | } | |
981 | ||
982 | dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt); | |
983 | ||
984 | return err; | |
8628e7c8 DK |
985 | } |
986 | ||
987 | static void omap_sham_finish_req(struct ahash_request *req, int err) | |
988 | { | |
989 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
798eed5d | 990 | struct omap_sham_dev *dd = ctx->dd; |
8628e7c8 DK |
991 | |
992 | if (!err) { | |
0d373d60 | 993 | dd->pdata->copy_hash(req, 1); |
ed3ea9a8 | 994 | if (test_bit(FLAGS_FINAL, &dd->flags)) |
bf362759 | 995 | err = omap_sham_finish(req); |
3e133c8b | 996 | } else { |
ea1fd224 | 997 | ctx->flags |= BIT(FLAGS_ERROR); |
8628e7c8 DK |
998 | } |
999 | ||
0efd4d8a DK |
1000 | /* atomic operation is not needed here */ |
1001 | dd->flags &= ~(BIT(FLAGS_BUSY) | BIT(FLAGS_FINAL) | BIT(FLAGS_CPU) | | |
1002 | BIT(FLAGS_DMA_READY) | BIT(FLAGS_OUTPUT_READY)); | |
b359f034 | 1003 | |
e68af482 | 1004 | pm_runtime_put(dd->dev); |
8628e7c8 DK |
1005 | |
1006 | if (req->base.complete) | |
1007 | req->base.complete(&req->base, err); | |
6cb3ffe1 DK |
1008 | |
1009 | /* handle new request */ | |
1010 | tasklet_schedule(&dd->done_task); | |
8628e7c8 DK |
1011 | } |
1012 | ||
a5d87237 DK |
1013 | static int omap_sham_handle_queue(struct omap_sham_dev *dd, |
1014 | struct ahash_request *req) | |
8628e7c8 | 1015 | { |
6c39d116 | 1016 | struct crypto_async_request *async_req, *backlog; |
8628e7c8 | 1017 | struct omap_sham_reqctx *ctx; |
8628e7c8 | 1018 | unsigned long flags; |
a5d87237 | 1019 | int err = 0, ret = 0; |
8628e7c8 DK |
1020 | |
1021 | spin_lock_irqsave(&dd->lock, flags); | |
a5d87237 DK |
1022 | if (req) |
1023 | ret = ahash_enqueue_request(&dd->queue, req); | |
a929cbee | 1024 | if (test_bit(FLAGS_BUSY, &dd->flags)) { |
a5d87237 DK |
1025 | spin_unlock_irqrestore(&dd->lock, flags); |
1026 | return ret; | |
1027 | } | |
6c39d116 | 1028 | backlog = crypto_get_backlog(&dd->queue); |
8628e7c8 | 1029 | async_req = crypto_dequeue_request(&dd->queue); |
6c39d116 | 1030 | if (async_req) |
a929cbee | 1031 | set_bit(FLAGS_BUSY, &dd->flags); |
8628e7c8 DK |
1032 | spin_unlock_irqrestore(&dd->lock, flags); |
1033 | ||
1034 | if (!async_req) | |
a5d87237 | 1035 | return ret; |
8628e7c8 DK |
1036 | |
1037 | if (backlog) | |
1038 | backlog->complete(backlog, -EINPROGRESS); | |
1039 | ||
1040 | req = ahash_request_cast(async_req); | |
8628e7c8 | 1041 | dd->req = req; |
8628e7c8 DK |
1042 | ctx = ahash_request_ctx(req); |
1043 | ||
1044 | dev_dbg(dd->dev, "handling new req, op: %lu, nbytes: %d\n", | |
1045 | ctx->op, req->nbytes); | |
1046 | ||
798eed5d DK |
1047 | err = omap_sham_hw_init(dd); |
1048 | if (err) | |
1049 | goto err1; | |
1050 | ||
798eed5d | 1051 | if (ctx->digcnt) |
8628e7c8 | 1052 | /* request has changed - restore hash */ |
0d373d60 | 1053 | dd->pdata->copy_hash(req, 0); |
8628e7c8 DK |
1054 | |
1055 | if (ctx->op == OP_UPDATE) { | |
1056 | err = omap_sham_update_req(dd); | |
ea1fd224 | 1057 | if (err != -EINPROGRESS && (ctx->flags & BIT(FLAGS_FINUP))) |
8628e7c8 DK |
1058 | /* no final() after finup() */ |
1059 | err = omap_sham_final_req(dd); | |
1060 | } else if (ctx->op == OP_FINAL) { | |
1061 | err = omap_sham_final_req(dd); | |
1062 | } | |
798eed5d | 1063 | err1: |
6cb3ffe1 | 1064 | if (err != -EINPROGRESS) |
8628e7c8 DK |
1065 | /* done_task will not finish it, so do it here */ |
1066 | omap_sham_finish_req(req, err); | |
8628e7c8 DK |
1067 | |
1068 | dev_dbg(dd->dev, "exit, err: %d\n", err); | |
1069 | ||
a5d87237 | 1070 | return ret; |
8628e7c8 DK |
1071 | } |
1072 | ||
1073 | static int omap_sham_enqueue(struct ahash_request *req, unsigned int op) | |
1074 | { | |
1075 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
1076 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); | |
1077 | struct omap_sham_dev *dd = tctx->dd; | |
8628e7c8 DK |
1078 | |
1079 | ctx->op = op; | |
1080 | ||
a5d87237 | 1081 | return omap_sham_handle_queue(dd, req); |
8628e7c8 DK |
1082 | } |
1083 | ||
1084 | static int omap_sham_update(struct ahash_request *req) | |
1085 | { | |
1086 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
b8411ccd | 1087 | struct omap_sham_dev *dd = ctx->dd; |
eaef7e3f | 1088 | int bs = get_block_size(ctx); |
8628e7c8 DK |
1089 | |
1090 | if (!req->nbytes) | |
1091 | return 0; | |
1092 | ||
1093 | ctx->total = req->nbytes; | |
1094 | ctx->sg = req->src; | |
1095 | ctx->offset = 0; | |
1096 | ||
ea1fd224 | 1097 | if (ctx->flags & BIT(FLAGS_FINUP)) { |
8628e7c8 DK |
1098 | if ((ctx->digcnt + ctx->bufcnt + ctx->total) < 9) { |
1099 | /* | |
1100 | * OMAP HW accel works only with buffers >= 9 | |
1101 | * will switch to bypass in final() | |
1102 | * final has the same request and data | |
1103 | */ | |
1104 | omap_sham_append_sg(ctx); | |
1105 | return 0; | |
b8411ccd LV |
1106 | } else if ((ctx->bufcnt + ctx->total <= bs) || |
1107 | dd->polling_mode) { | |
887c883e | 1108 | /* |
b8411ccd LV |
1109 | * faster to use CPU for short transfers or |
1110 | * use cpu when dma is not present. | |
1111 | */ | |
ea1fd224 | 1112 | ctx->flags |= BIT(FLAGS_CPU); |
8628e7c8 | 1113 | } |
887c883e | 1114 | } else if (ctx->bufcnt + ctx->total < ctx->buflen) { |
8628e7c8 DK |
1115 | omap_sham_append_sg(ctx); |
1116 | return 0; | |
1117 | } | |
1118 | ||
acef7b0f LV |
1119 | if (dd->polling_mode) |
1120 | ctx->flags |= BIT(FLAGS_CPU); | |
1121 | ||
8628e7c8 DK |
1122 | return omap_sham_enqueue(req, OP_UPDATE); |
1123 | } | |
1124 | ||
7bc53c3f | 1125 | static int omap_sham_shash_digest(struct crypto_shash *tfm, u32 flags, |
8628e7c8 DK |
1126 | const u8 *data, unsigned int len, u8 *out) |
1127 | { | |
7bc53c3f | 1128 | SHASH_DESC_ON_STACK(shash, tfm); |
8628e7c8 | 1129 | |
7bc53c3f BW |
1130 | shash->tfm = tfm; |
1131 | shash->flags = flags & CRYPTO_TFM_REQ_MAY_SLEEP; | |
8628e7c8 | 1132 | |
7bc53c3f | 1133 | return crypto_shash_digest(shash, data, len, out); |
8628e7c8 DK |
1134 | } |
1135 | ||
1136 | static int omap_sham_final_shash(struct ahash_request *req) | |
1137 | { | |
1138 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm); | |
1139 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
1140 | ||
1141 | return omap_sham_shash_digest(tctx->fallback, req->base.flags, | |
1142 | ctx->buffer, ctx->bufcnt, req->result); | |
1143 | } | |
1144 | ||
1145 | static int omap_sham_final(struct ahash_request *req) | |
1146 | { | |
1147 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
8628e7c8 | 1148 | |
ea1fd224 | 1149 | ctx->flags |= BIT(FLAGS_FINUP); |
8628e7c8 | 1150 | |
ea1fd224 | 1151 | if (ctx->flags & BIT(FLAGS_ERROR)) |
bf362759 | 1152 | return 0; /* uncompleted hash is not needed */ |
8628e7c8 | 1153 | |
bf362759 DK |
1154 | /* OMAP HW accel works only with buffers >= 9 */ |
1155 | /* HMAC is always >= 9 because ipad == block size */ | |
1156 | if ((ctx->digcnt + ctx->bufcnt) < 9) | |
1157 | return omap_sham_final_shash(req); | |
1158 | else if (ctx->bufcnt) | |
1159 | return omap_sham_enqueue(req, OP_FINAL); | |
8628e7c8 | 1160 | |
bf362759 DK |
1161 | /* copy ready hash (+ finalize hmac) */ |
1162 | return omap_sham_finish(req); | |
8628e7c8 DK |
1163 | } |
1164 | ||
1165 | static int omap_sham_finup(struct ahash_request *req) | |
1166 | { | |
1167 | struct omap_sham_reqctx *ctx = ahash_request_ctx(req); | |
1168 | int err1, err2; | |
1169 | ||
ea1fd224 | 1170 | ctx->flags |= BIT(FLAGS_FINUP); |
8628e7c8 DK |
1171 | |
1172 | err1 = omap_sham_update(req); | |
455e3389 | 1173 | if (err1 == -EINPROGRESS || err1 == -EBUSY) |
8628e7c8 DK |
1174 | return err1; |
1175 | /* | |
1176 | * final() has to be always called to cleanup resources | |
1177 | * even if udpate() failed, except EINPROGRESS | |
1178 | */ | |
1179 | err2 = omap_sham_final(req); | |
1180 | ||
1181 | return err1 ?: err2; | |
1182 | } | |
1183 | ||
1184 | static int omap_sham_digest(struct ahash_request *req) | |
1185 | { | |
1186 | return omap_sham_init(req) ?: omap_sham_finup(req); | |
1187 | } | |
1188 | ||
1189 | static int omap_sham_setkey(struct crypto_ahash *tfm, const u8 *key, | |
1190 | unsigned int keylen) | |
1191 | { | |
1192 | struct omap_sham_ctx *tctx = crypto_ahash_ctx(tfm); | |
1193 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
1194 | int bs = crypto_shash_blocksize(bctx->shash); | |
1195 | int ds = crypto_shash_digestsize(bctx->shash); | |
0d373d60 | 1196 | struct omap_sham_dev *dd = NULL, *tmp; |
8628e7c8 | 1197 | int err, i; |
0d373d60 MG |
1198 | |
1199 | spin_lock_bh(&sham.lock); | |
1200 | if (!tctx->dd) { | |
1201 | list_for_each_entry(tmp, &sham.dev_list, list) { | |
1202 | dd = tmp; | |
1203 | break; | |
1204 | } | |
1205 | tctx->dd = dd; | |
1206 | } else { | |
1207 | dd = tctx->dd; | |
1208 | } | |
1209 | spin_unlock_bh(&sham.lock); | |
1210 | ||
8628e7c8 DK |
1211 | err = crypto_shash_setkey(tctx->fallback, key, keylen); |
1212 | if (err) | |
1213 | return err; | |
1214 | ||
1215 | if (keylen > bs) { | |
1216 | err = omap_sham_shash_digest(bctx->shash, | |
1217 | crypto_shash_get_flags(bctx->shash), | |
1218 | key, keylen, bctx->ipad); | |
1219 | if (err) | |
1220 | return err; | |
1221 | keylen = ds; | |
1222 | } else { | |
1223 | memcpy(bctx->ipad, key, keylen); | |
1224 | } | |
1225 | ||
1226 | memset(bctx->ipad + keylen, 0, bs - keylen); | |
8628e7c8 | 1227 | |
0d373d60 MG |
1228 | if (!test_bit(FLAGS_AUTO_XOR, &dd->flags)) { |
1229 | memcpy(bctx->opad, bctx->ipad, bs); | |
1230 | ||
1231 | for (i = 0; i < bs; i++) { | |
1232 | bctx->ipad[i] ^= 0x36; | |
1233 | bctx->opad[i] ^= 0x5c; | |
1234 | } | |
8628e7c8 DK |
1235 | } |
1236 | ||
1237 | return err; | |
1238 | } | |
1239 | ||
1240 | static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base) | |
1241 | { | |
1242 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); | |
1243 | const char *alg_name = crypto_tfm_alg_name(tfm); | |
1244 | ||
1245 | /* Allocate a fallback and abort if it failed. */ | |
1246 | tctx->fallback = crypto_alloc_shash(alg_name, 0, | |
1247 | CRYPTO_ALG_NEED_FALLBACK); | |
1248 | if (IS_ERR(tctx->fallback)) { | |
1249 | pr_err("omap-sham: fallback driver '%s' " | |
1250 | "could not be loaded.\n", alg_name); | |
1251 | return PTR_ERR(tctx->fallback); | |
1252 | } | |
1253 | ||
1254 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
798eed5d | 1255 | sizeof(struct omap_sham_reqctx) + BUFLEN); |
8628e7c8 DK |
1256 | |
1257 | if (alg_base) { | |
1258 | struct omap_sham_hmac_ctx *bctx = tctx->base; | |
ea1fd224 | 1259 | tctx->flags |= BIT(FLAGS_HMAC); |
8628e7c8 DK |
1260 | bctx->shash = crypto_alloc_shash(alg_base, 0, |
1261 | CRYPTO_ALG_NEED_FALLBACK); | |
1262 | if (IS_ERR(bctx->shash)) { | |
1263 | pr_err("omap-sham: base driver '%s' " | |
1264 | "could not be loaded.\n", alg_base); | |
1265 | crypto_free_shash(tctx->fallback); | |
1266 | return PTR_ERR(bctx->shash); | |
1267 | } | |
1268 | ||
1269 | } | |
1270 | ||
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static int omap_sham_cra_init(struct crypto_tfm *tfm) | |
1275 | { | |
1276 | return omap_sham_cra_init_alg(tfm, NULL); | |
1277 | } | |
1278 | ||
1279 | static int omap_sham_cra_sha1_init(struct crypto_tfm *tfm) | |
1280 | { | |
1281 | return omap_sham_cra_init_alg(tfm, "sha1"); | |
1282 | } | |
1283 | ||
d20fb18b MG |
1284 | static int omap_sham_cra_sha224_init(struct crypto_tfm *tfm) |
1285 | { | |
1286 | return omap_sham_cra_init_alg(tfm, "sha224"); | |
1287 | } | |
1288 | ||
1289 | static int omap_sham_cra_sha256_init(struct crypto_tfm *tfm) | |
1290 | { | |
1291 | return omap_sham_cra_init_alg(tfm, "sha256"); | |
1292 | } | |
1293 | ||
8628e7c8 DK |
1294 | static int omap_sham_cra_md5_init(struct crypto_tfm *tfm) |
1295 | { | |
1296 | return omap_sham_cra_init_alg(tfm, "md5"); | |
1297 | } | |
1298 | ||
eaef7e3f LV |
1299 | static int omap_sham_cra_sha384_init(struct crypto_tfm *tfm) |
1300 | { | |
1301 | return omap_sham_cra_init_alg(tfm, "sha384"); | |
1302 | } | |
1303 | ||
1304 | static int omap_sham_cra_sha512_init(struct crypto_tfm *tfm) | |
1305 | { | |
1306 | return omap_sham_cra_init_alg(tfm, "sha512"); | |
1307 | } | |
1308 | ||
8628e7c8 DK |
1309 | static void omap_sham_cra_exit(struct crypto_tfm *tfm) |
1310 | { | |
1311 | struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm); | |
1312 | ||
1313 | crypto_free_shash(tctx->fallback); | |
1314 | tctx->fallback = NULL; | |
1315 | ||
ea1fd224 | 1316 | if (tctx->flags & BIT(FLAGS_HMAC)) { |
8628e7c8 DK |
1317 | struct omap_sham_hmac_ctx *bctx = tctx->base; |
1318 | crypto_free_shash(bctx->shash); | |
1319 | } | |
1320 | } | |
1321 | ||
d20fb18b | 1322 | static struct ahash_alg algs_sha1_md5[] = { |
8628e7c8 DK |
1323 | { |
1324 | .init = omap_sham_init, | |
1325 | .update = omap_sham_update, | |
1326 | .final = omap_sham_final, | |
1327 | .finup = omap_sham_finup, | |
1328 | .digest = omap_sham_digest, | |
1329 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
1330 | .halg.base = { | |
1331 | .cra_name = "sha1", | |
1332 | .cra_driver_name = "omap-sha1", | |
1333 | .cra_priority = 100, | |
1334 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
d912bb76 | 1335 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
8628e7c8 DK |
1336 | CRYPTO_ALG_ASYNC | |
1337 | CRYPTO_ALG_NEED_FALLBACK, | |
1338 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
1339 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
1340 | .cra_alignmask = 0, | |
1341 | .cra_module = THIS_MODULE, | |
1342 | .cra_init = omap_sham_cra_init, | |
1343 | .cra_exit = omap_sham_cra_exit, | |
1344 | } | |
1345 | }, | |
1346 | { | |
1347 | .init = omap_sham_init, | |
1348 | .update = omap_sham_update, | |
1349 | .final = omap_sham_final, | |
1350 | .finup = omap_sham_finup, | |
1351 | .digest = omap_sham_digest, | |
1352 | .halg.digestsize = MD5_DIGEST_SIZE, | |
1353 | .halg.base = { | |
1354 | .cra_name = "md5", | |
1355 | .cra_driver_name = "omap-md5", | |
1356 | .cra_priority = 100, | |
1357 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
d912bb76 | 1358 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
8628e7c8 DK |
1359 | CRYPTO_ALG_ASYNC | |
1360 | CRYPTO_ALG_NEED_FALLBACK, | |
1361 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
1362 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
798eed5d | 1363 | .cra_alignmask = OMAP_ALIGN_MASK, |
8628e7c8 DK |
1364 | .cra_module = THIS_MODULE, |
1365 | .cra_init = omap_sham_cra_init, | |
1366 | .cra_exit = omap_sham_cra_exit, | |
1367 | } | |
1368 | }, | |
1369 | { | |
1370 | .init = omap_sham_init, | |
1371 | .update = omap_sham_update, | |
1372 | .final = omap_sham_final, | |
1373 | .finup = omap_sham_finup, | |
1374 | .digest = omap_sham_digest, | |
1375 | .setkey = omap_sham_setkey, | |
1376 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
1377 | .halg.base = { | |
1378 | .cra_name = "hmac(sha1)", | |
1379 | .cra_driver_name = "omap-hmac-sha1", | |
1380 | .cra_priority = 100, | |
1381 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
d912bb76 | 1382 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
8628e7c8 DK |
1383 | CRYPTO_ALG_ASYNC | |
1384 | CRYPTO_ALG_NEED_FALLBACK, | |
1385 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
1386 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1387 | sizeof(struct omap_sham_hmac_ctx), | |
798eed5d | 1388 | .cra_alignmask = OMAP_ALIGN_MASK, |
8628e7c8 DK |
1389 | .cra_module = THIS_MODULE, |
1390 | .cra_init = omap_sham_cra_sha1_init, | |
1391 | .cra_exit = omap_sham_cra_exit, | |
1392 | } | |
1393 | }, | |
1394 | { | |
1395 | .init = omap_sham_init, | |
1396 | .update = omap_sham_update, | |
1397 | .final = omap_sham_final, | |
1398 | .finup = omap_sham_finup, | |
1399 | .digest = omap_sham_digest, | |
1400 | .setkey = omap_sham_setkey, | |
1401 | .halg.digestsize = MD5_DIGEST_SIZE, | |
1402 | .halg.base = { | |
1403 | .cra_name = "hmac(md5)", | |
1404 | .cra_driver_name = "omap-hmac-md5", | |
1405 | .cra_priority = 100, | |
1406 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
d912bb76 | 1407 | CRYPTO_ALG_KERN_DRIVER_ONLY | |
8628e7c8 DK |
1408 | CRYPTO_ALG_ASYNC | |
1409 | CRYPTO_ALG_NEED_FALLBACK, | |
1410 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
1411 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1412 | sizeof(struct omap_sham_hmac_ctx), | |
798eed5d | 1413 | .cra_alignmask = OMAP_ALIGN_MASK, |
8628e7c8 DK |
1414 | .cra_module = THIS_MODULE, |
1415 | .cra_init = omap_sham_cra_md5_init, | |
1416 | .cra_exit = omap_sham_cra_exit, | |
1417 | } | |
1418 | } | |
1419 | }; | |
1420 | ||
d20fb18b MG |
1421 | /* OMAP4 has some algs in addition to what OMAP2 has */ |
1422 | static struct ahash_alg algs_sha224_sha256[] = { | |
1423 | { | |
1424 | .init = omap_sham_init, | |
1425 | .update = omap_sham_update, | |
1426 | .final = omap_sham_final, | |
1427 | .finup = omap_sham_finup, | |
1428 | .digest = omap_sham_digest, | |
1429 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
1430 | .halg.base = { | |
1431 | .cra_name = "sha224", | |
1432 | .cra_driver_name = "omap-sha224", | |
1433 | .cra_priority = 100, | |
1434 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1435 | CRYPTO_ALG_ASYNC | | |
1436 | CRYPTO_ALG_NEED_FALLBACK, | |
1437 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
1438 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
1439 | .cra_alignmask = 0, | |
1440 | .cra_module = THIS_MODULE, | |
1441 | .cra_init = omap_sham_cra_init, | |
1442 | .cra_exit = omap_sham_cra_exit, | |
1443 | } | |
1444 | }, | |
1445 | { | |
1446 | .init = omap_sham_init, | |
1447 | .update = omap_sham_update, | |
1448 | .final = omap_sham_final, | |
1449 | .finup = omap_sham_finup, | |
1450 | .digest = omap_sham_digest, | |
1451 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
1452 | .halg.base = { | |
1453 | .cra_name = "sha256", | |
1454 | .cra_driver_name = "omap-sha256", | |
1455 | .cra_priority = 100, | |
1456 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1457 | CRYPTO_ALG_ASYNC | | |
1458 | CRYPTO_ALG_NEED_FALLBACK, | |
1459 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
1460 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
1461 | .cra_alignmask = 0, | |
1462 | .cra_module = THIS_MODULE, | |
1463 | .cra_init = omap_sham_cra_init, | |
1464 | .cra_exit = omap_sham_cra_exit, | |
1465 | } | |
1466 | }, | |
1467 | { | |
1468 | .init = omap_sham_init, | |
1469 | .update = omap_sham_update, | |
1470 | .final = omap_sham_final, | |
1471 | .finup = omap_sham_finup, | |
1472 | .digest = omap_sham_digest, | |
1473 | .setkey = omap_sham_setkey, | |
1474 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
1475 | .halg.base = { | |
1476 | .cra_name = "hmac(sha224)", | |
1477 | .cra_driver_name = "omap-hmac-sha224", | |
1478 | .cra_priority = 100, | |
1479 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1480 | CRYPTO_ALG_ASYNC | | |
1481 | CRYPTO_ALG_NEED_FALLBACK, | |
1482 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
1483 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1484 | sizeof(struct omap_sham_hmac_ctx), | |
1485 | .cra_alignmask = OMAP_ALIGN_MASK, | |
1486 | .cra_module = THIS_MODULE, | |
1487 | .cra_init = omap_sham_cra_sha224_init, | |
1488 | .cra_exit = omap_sham_cra_exit, | |
1489 | } | |
1490 | }, | |
1491 | { | |
1492 | .init = omap_sham_init, | |
1493 | .update = omap_sham_update, | |
1494 | .final = omap_sham_final, | |
1495 | .finup = omap_sham_finup, | |
1496 | .digest = omap_sham_digest, | |
1497 | .setkey = omap_sham_setkey, | |
1498 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
1499 | .halg.base = { | |
1500 | .cra_name = "hmac(sha256)", | |
1501 | .cra_driver_name = "omap-hmac-sha256", | |
1502 | .cra_priority = 100, | |
1503 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1504 | CRYPTO_ALG_ASYNC | | |
1505 | CRYPTO_ALG_NEED_FALLBACK, | |
1506 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
1507 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1508 | sizeof(struct omap_sham_hmac_ctx), | |
1509 | .cra_alignmask = OMAP_ALIGN_MASK, | |
1510 | .cra_module = THIS_MODULE, | |
1511 | .cra_init = omap_sham_cra_sha256_init, | |
1512 | .cra_exit = omap_sham_cra_exit, | |
1513 | } | |
1514 | }, | |
1515 | }; | |
1516 | ||
eaef7e3f LV |
1517 | static struct ahash_alg algs_sha384_sha512[] = { |
1518 | { | |
1519 | .init = omap_sham_init, | |
1520 | .update = omap_sham_update, | |
1521 | .final = omap_sham_final, | |
1522 | .finup = omap_sham_finup, | |
1523 | .digest = omap_sham_digest, | |
1524 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
1525 | .halg.base = { | |
1526 | .cra_name = "sha384", | |
1527 | .cra_driver_name = "omap-sha384", | |
1528 | .cra_priority = 100, | |
1529 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1530 | CRYPTO_ALG_ASYNC | | |
1531 | CRYPTO_ALG_NEED_FALLBACK, | |
1532 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
1533 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
1534 | .cra_alignmask = 0, | |
1535 | .cra_module = THIS_MODULE, | |
1536 | .cra_init = omap_sham_cra_init, | |
1537 | .cra_exit = omap_sham_cra_exit, | |
1538 | } | |
1539 | }, | |
1540 | { | |
1541 | .init = omap_sham_init, | |
1542 | .update = omap_sham_update, | |
1543 | .final = omap_sham_final, | |
1544 | .finup = omap_sham_finup, | |
1545 | .digest = omap_sham_digest, | |
1546 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
1547 | .halg.base = { | |
1548 | .cra_name = "sha512", | |
1549 | .cra_driver_name = "omap-sha512", | |
1550 | .cra_priority = 100, | |
1551 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1552 | CRYPTO_ALG_ASYNC | | |
1553 | CRYPTO_ALG_NEED_FALLBACK, | |
1554 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
1555 | .cra_ctxsize = sizeof(struct omap_sham_ctx), | |
1556 | .cra_alignmask = 0, | |
1557 | .cra_module = THIS_MODULE, | |
1558 | .cra_init = omap_sham_cra_init, | |
1559 | .cra_exit = omap_sham_cra_exit, | |
1560 | } | |
1561 | }, | |
1562 | { | |
1563 | .init = omap_sham_init, | |
1564 | .update = omap_sham_update, | |
1565 | .final = omap_sham_final, | |
1566 | .finup = omap_sham_finup, | |
1567 | .digest = omap_sham_digest, | |
1568 | .setkey = omap_sham_setkey, | |
1569 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
1570 | .halg.base = { | |
1571 | .cra_name = "hmac(sha384)", | |
1572 | .cra_driver_name = "omap-hmac-sha384", | |
1573 | .cra_priority = 100, | |
1574 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1575 | CRYPTO_ALG_ASYNC | | |
1576 | CRYPTO_ALG_NEED_FALLBACK, | |
1577 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
1578 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1579 | sizeof(struct omap_sham_hmac_ctx), | |
1580 | .cra_alignmask = OMAP_ALIGN_MASK, | |
1581 | .cra_module = THIS_MODULE, | |
1582 | .cra_init = omap_sham_cra_sha384_init, | |
1583 | .cra_exit = omap_sham_cra_exit, | |
1584 | } | |
1585 | }, | |
1586 | { | |
1587 | .init = omap_sham_init, | |
1588 | .update = omap_sham_update, | |
1589 | .final = omap_sham_final, | |
1590 | .finup = omap_sham_finup, | |
1591 | .digest = omap_sham_digest, | |
1592 | .setkey = omap_sham_setkey, | |
1593 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
1594 | .halg.base = { | |
1595 | .cra_name = "hmac(sha512)", | |
1596 | .cra_driver_name = "omap-hmac-sha512", | |
1597 | .cra_priority = 100, | |
1598 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
1599 | CRYPTO_ALG_ASYNC | | |
1600 | CRYPTO_ALG_NEED_FALLBACK, | |
1601 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
1602 | .cra_ctxsize = sizeof(struct omap_sham_ctx) + | |
1603 | sizeof(struct omap_sham_hmac_ctx), | |
1604 | .cra_alignmask = OMAP_ALIGN_MASK, | |
1605 | .cra_module = THIS_MODULE, | |
1606 | .cra_init = omap_sham_cra_sha512_init, | |
1607 | .cra_exit = omap_sham_cra_exit, | |
1608 | } | |
1609 | }, | |
1610 | }; | |
1611 | ||
8628e7c8 DK |
1612 | static void omap_sham_done_task(unsigned long data) |
1613 | { | |
1614 | struct omap_sham_dev *dd = (struct omap_sham_dev *)data; | |
6c63db82 | 1615 | int err = 0; |
8628e7c8 | 1616 | |
6cb3ffe1 DK |
1617 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { |
1618 | omap_sham_handle_queue(dd, NULL); | |
1619 | return; | |
1620 | } | |
1621 | ||
6c63db82 | 1622 | if (test_bit(FLAGS_CPU, &dd->flags)) { |
b8411ccd LV |
1623 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { |
1624 | /* hash or semi-hash ready */ | |
1625 | err = omap_sham_update_cpu(dd); | |
1626 | if (err != -EINPROGRESS) | |
1627 | goto finish; | |
1628 | } | |
6c63db82 DK |
1629 | } else if (test_bit(FLAGS_DMA_READY, &dd->flags)) { |
1630 | if (test_and_clear_bit(FLAGS_DMA_ACTIVE, &dd->flags)) { | |
1631 | omap_sham_update_dma_stop(dd); | |
1632 | if (dd->err) { | |
1633 | err = dd->err; | |
1634 | goto finish; | |
1635 | } | |
1636 | } | |
1637 | if (test_and_clear_bit(FLAGS_OUTPUT_READY, &dd->flags)) { | |
1638 | /* hash or semi-hash ready */ | |
1639 | clear_bit(FLAGS_DMA_READY, &dd->flags); | |
887c883e | 1640 | err = omap_sham_update_dma_start(dd); |
6c63db82 DK |
1641 | if (err != -EINPROGRESS) |
1642 | goto finish; | |
1643 | } | |
8628e7c8 DK |
1644 | } |
1645 | ||
6c63db82 | 1646 | return; |
3e133c8b | 1647 | |
6c63db82 DK |
1648 | finish: |
1649 | dev_dbg(dd->dev, "update done: err: %d\n", err); | |
1650 | /* finish curent request */ | |
1651 | omap_sham_finish_req(dd->req, err); | |
8628e7c8 DK |
1652 | } |
1653 | ||
0d373d60 MG |
1654 | static irqreturn_t omap_sham_irq_common(struct omap_sham_dev *dd) |
1655 | { | |
1656 | if (!test_bit(FLAGS_BUSY, &dd->flags)) { | |
1657 | dev_warn(dd->dev, "Interrupt when no active requests.\n"); | |
1658 | } else { | |
1659 | set_bit(FLAGS_OUTPUT_READY, &dd->flags); | |
1660 | tasklet_schedule(&dd->done_task); | |
1661 | } | |
1662 | ||
1663 | return IRQ_HANDLED; | |
1664 | } | |
1665 | ||
1666 | static irqreturn_t omap_sham_irq_omap2(int irq, void *dev_id) | |
8628e7c8 DK |
1667 | { |
1668 | struct omap_sham_dev *dd = dev_id; | |
8628e7c8 | 1669 | |
ed3ea9a8 | 1670 | if (unlikely(test_bit(FLAGS_FINAL, &dd->flags))) |
8628e7c8 DK |
1671 | /* final -> allow device to go to power-saving mode */ |
1672 | omap_sham_write_mask(dd, SHA_REG_CTRL, 0, SHA_REG_CTRL_LENGTH); | |
1673 | ||
1674 | omap_sham_write_mask(dd, SHA_REG_CTRL, SHA_REG_CTRL_OUTPUT_READY, | |
1675 | SHA_REG_CTRL_OUTPUT_READY); | |
1676 | omap_sham_read(dd, SHA_REG_CTRL); | |
1677 | ||
0d373d60 MG |
1678 | return omap_sham_irq_common(dd); |
1679 | } | |
cd3f1d54 | 1680 | |
0d373d60 MG |
1681 | static irqreturn_t omap_sham_irq_omap4(int irq, void *dev_id) |
1682 | { | |
1683 | struct omap_sham_dev *dd = dev_id; | |
8628e7c8 | 1684 | |
0d373d60 MG |
1685 | omap_sham_write_mask(dd, SHA_REG_MASK(dd), 0, SHA_REG_MASK_IT_EN); |
1686 | ||
1687 | return omap_sham_irq_common(dd); | |
8628e7c8 DK |
1688 | } |
1689 | ||
d20fb18b MG |
1690 | static struct omap_sham_algs_info omap_sham_algs_info_omap2[] = { |
1691 | { | |
1692 | .algs_list = algs_sha1_md5, | |
1693 | .size = ARRAY_SIZE(algs_sha1_md5), | |
1694 | }, | |
1695 | }; | |
1696 | ||
0d373d60 | 1697 | static const struct omap_sham_pdata omap_sham_pdata_omap2 = { |
d20fb18b MG |
1698 | .algs_info = omap_sham_algs_info_omap2, |
1699 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap2), | |
0d373d60 MG |
1700 | .flags = BIT(FLAGS_BE32_SHA1), |
1701 | .digest_size = SHA1_DIGEST_SIZE, | |
1702 | .copy_hash = omap_sham_copy_hash_omap2, | |
1703 | .write_ctrl = omap_sham_write_ctrl_omap2, | |
1704 | .trigger = omap_sham_trigger_omap2, | |
1705 | .poll_irq = omap_sham_poll_irq_omap2, | |
1706 | .intr_hdlr = omap_sham_irq_omap2, | |
1707 | .idigest_ofs = 0x00, | |
1708 | .din_ofs = 0x1c, | |
1709 | .digcnt_ofs = 0x14, | |
1710 | .rev_ofs = 0x5c, | |
1711 | .mask_ofs = 0x60, | |
1712 | .sysstatus_ofs = 0x64, | |
1713 | .major_mask = 0xf0, | |
1714 | .major_shift = 4, | |
1715 | .minor_mask = 0x0f, | |
1716 | .minor_shift = 0, | |
1717 | }; | |
1718 | ||
03feec9c | 1719 | #ifdef CONFIG_OF |
d20fb18b MG |
1720 | static struct omap_sham_algs_info omap_sham_algs_info_omap4[] = { |
1721 | { | |
1722 | .algs_list = algs_sha1_md5, | |
1723 | .size = ARRAY_SIZE(algs_sha1_md5), | |
1724 | }, | |
1725 | { | |
1726 | .algs_list = algs_sha224_sha256, | |
1727 | .size = ARRAY_SIZE(algs_sha224_sha256), | |
1728 | }, | |
1729 | }; | |
1730 | ||
0d373d60 | 1731 | static const struct omap_sham_pdata omap_sham_pdata_omap4 = { |
d20fb18b MG |
1732 | .algs_info = omap_sham_algs_info_omap4, |
1733 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap4), | |
0d373d60 MG |
1734 | .flags = BIT(FLAGS_AUTO_XOR), |
1735 | .digest_size = SHA256_DIGEST_SIZE, | |
1736 | .copy_hash = omap_sham_copy_hash_omap4, | |
1737 | .write_ctrl = omap_sham_write_ctrl_omap4, | |
1738 | .trigger = omap_sham_trigger_omap4, | |
1739 | .poll_irq = omap_sham_poll_irq_omap4, | |
1740 | .intr_hdlr = omap_sham_irq_omap4, | |
1741 | .idigest_ofs = 0x020, | |
eaef7e3f | 1742 | .odigest_ofs = 0x0, |
0d373d60 MG |
1743 | .din_ofs = 0x080, |
1744 | .digcnt_ofs = 0x040, | |
1745 | .rev_ofs = 0x100, | |
1746 | .mask_ofs = 0x110, | |
1747 | .sysstatus_ofs = 0x114, | |
eaef7e3f LV |
1748 | .mode_ofs = 0x44, |
1749 | .length_ofs = 0x48, | |
0d373d60 MG |
1750 | .major_mask = 0x0700, |
1751 | .major_shift = 8, | |
1752 | .minor_mask = 0x003f, | |
1753 | .minor_shift = 0, | |
1754 | }; | |
1755 | ||
7d7c704d LV |
1756 | static struct omap_sham_algs_info omap_sham_algs_info_omap5[] = { |
1757 | { | |
1758 | .algs_list = algs_sha1_md5, | |
1759 | .size = ARRAY_SIZE(algs_sha1_md5), | |
1760 | }, | |
1761 | { | |
1762 | .algs_list = algs_sha224_sha256, | |
1763 | .size = ARRAY_SIZE(algs_sha224_sha256), | |
1764 | }, | |
1765 | { | |
1766 | .algs_list = algs_sha384_sha512, | |
1767 | .size = ARRAY_SIZE(algs_sha384_sha512), | |
1768 | }, | |
1769 | }; | |
1770 | ||
1771 | static const struct omap_sham_pdata omap_sham_pdata_omap5 = { | |
1772 | .algs_info = omap_sham_algs_info_omap5, | |
1773 | .algs_info_size = ARRAY_SIZE(omap_sham_algs_info_omap5), | |
1774 | .flags = BIT(FLAGS_AUTO_XOR), | |
1775 | .digest_size = SHA512_DIGEST_SIZE, | |
1776 | .copy_hash = omap_sham_copy_hash_omap4, | |
1777 | .write_ctrl = omap_sham_write_ctrl_omap4, | |
1778 | .trigger = omap_sham_trigger_omap4, | |
1779 | .poll_irq = omap_sham_poll_irq_omap4, | |
1780 | .intr_hdlr = omap_sham_irq_omap4, | |
1781 | .idigest_ofs = 0x240, | |
1782 | .odigest_ofs = 0x200, | |
1783 | .din_ofs = 0x080, | |
1784 | .digcnt_ofs = 0x280, | |
1785 | .rev_ofs = 0x100, | |
1786 | .mask_ofs = 0x110, | |
1787 | .sysstatus_ofs = 0x114, | |
1788 | .mode_ofs = 0x284, | |
1789 | .length_ofs = 0x288, | |
1790 | .major_mask = 0x0700, | |
1791 | .major_shift = 8, | |
1792 | .minor_mask = 0x003f, | |
1793 | .minor_shift = 0, | |
1794 | }; | |
1795 | ||
03feec9c MG |
1796 | static const struct of_device_id omap_sham_of_match[] = { |
1797 | { | |
1798 | .compatible = "ti,omap2-sham", | |
0d373d60 MG |
1799 | .data = &omap_sham_pdata_omap2, |
1800 | }, | |
eddca85b PR |
1801 | { |
1802 | .compatible = "ti,omap3-sham", | |
1803 | .data = &omap_sham_pdata_omap2, | |
1804 | }, | |
0d373d60 MG |
1805 | { |
1806 | .compatible = "ti,omap4-sham", | |
1807 | .data = &omap_sham_pdata_omap4, | |
03feec9c | 1808 | }, |
7d7c704d LV |
1809 | { |
1810 | .compatible = "ti,omap5-sham", | |
1811 | .data = &omap_sham_pdata_omap5, | |
1812 | }, | |
03feec9c MG |
1813 | {}, |
1814 | }; | |
1815 | MODULE_DEVICE_TABLE(of, omap_sham_of_match); | |
1816 | ||
1817 | static int omap_sham_get_res_of(struct omap_sham_dev *dd, | |
1818 | struct device *dev, struct resource *res) | |
8628e7c8 | 1819 | { |
03feec9c MG |
1820 | struct device_node *node = dev->of_node; |
1821 | const struct of_device_id *match; | |
1822 | int err = 0; | |
8628e7c8 | 1823 | |
03feec9c MG |
1824 | match = of_match_device(of_match_ptr(omap_sham_of_match), dev); |
1825 | if (!match) { | |
1826 | dev_err(dev, "no compatible OF match\n"); | |
1827 | err = -EINVAL; | |
1828 | goto err; | |
3e133c8b DK |
1829 | } |
1830 | ||
03feec9c MG |
1831 | err = of_address_to_resource(node, 0, res); |
1832 | if (err < 0) { | |
1833 | dev_err(dev, "can't translate OF node address\n"); | |
1834 | err = -EINVAL; | |
1835 | goto err; | |
1836 | } | |
1837 | ||
f7578496 | 1838 | dd->irq = irq_of_parse_and_map(node, 0); |
03feec9c MG |
1839 | if (!dd->irq) { |
1840 | dev_err(dev, "can't translate OF irq value\n"); | |
1841 | err = -EINVAL; | |
1842 | goto err; | |
1843 | } | |
1844 | ||
1845 | dd->dma = -1; /* Dummy value that's unused */ | |
0d373d60 | 1846 | dd->pdata = match->data; |
03feec9c MG |
1847 | |
1848 | err: | |
1849 | return err; | |
8628e7c8 | 1850 | } |
03feec9c | 1851 | #else |
c3c3b329 MG |
1852 | static const struct of_device_id omap_sham_of_match[] = { |
1853 | {}, | |
1854 | }; | |
8628e7c8 | 1855 | |
c3c3b329 | 1856 | static int omap_sham_get_res_of(struct omap_sham_dev *dd, |
03feec9c | 1857 | struct device *dev, struct resource *res) |
8628e7c8 | 1858 | { |
03feec9c MG |
1859 | return -EINVAL; |
1860 | } | |
1861 | #endif | |
8628e7c8 | 1862 | |
03feec9c MG |
1863 | static int omap_sham_get_res_pdev(struct omap_sham_dev *dd, |
1864 | struct platform_device *pdev, struct resource *res) | |
1865 | { | |
1866 | struct device *dev = &pdev->dev; | |
1867 | struct resource *r; | |
1868 | int err = 0; | |
8628e7c8 | 1869 | |
03feec9c MG |
1870 | /* Get the base address */ |
1871 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1872 | if (!r) { | |
1873 | dev_err(dev, "no MEM resource info\n"); | |
1874 | err = -ENODEV; | |
1875 | goto err; | |
8628e7c8 | 1876 | } |
03feec9c | 1877 | memcpy(res, r, sizeof(*res)); |
584db6a1 | 1878 | |
03feec9c MG |
1879 | /* Get the IRQ */ |
1880 | dd->irq = platform_get_irq(pdev, 0); | |
1881 | if (dd->irq < 0) { | |
1882 | dev_err(dev, "no IRQ resource info\n"); | |
1883 | err = dd->irq; | |
1884 | goto err; | |
1885 | } | |
8628e7c8 | 1886 | |
03feec9c MG |
1887 | /* Get the DMA */ |
1888 | r = platform_get_resource(pdev, IORESOURCE_DMA, 0); | |
1889 | if (!r) { | |
1890 | dev_err(dev, "no DMA resource info\n"); | |
1891 | err = -ENODEV; | |
1892 | goto err; | |
8628e7c8 | 1893 | } |
03feec9c MG |
1894 | dd->dma = r->start; |
1895 | ||
0d373d60 MG |
1896 | /* Only OMAP2/3 can be non-DT */ |
1897 | dd->pdata = &omap_sham_pdata_omap2; | |
1898 | ||
03feec9c MG |
1899 | err: |
1900 | return err; | |
8628e7c8 DK |
1901 | } |
1902 | ||
49cfe4db | 1903 | static int omap_sham_probe(struct platform_device *pdev) |
8628e7c8 DK |
1904 | { |
1905 | struct omap_sham_dev *dd; | |
1906 | struct device *dev = &pdev->dev; | |
03feec9c | 1907 | struct resource res; |
dfd061d5 | 1908 | dma_cap_mask_t mask; |
8628e7c8 | 1909 | int err, i, j; |
0d373d60 | 1910 | u32 rev; |
8628e7c8 | 1911 | |
7a7e4b73 | 1912 | dd = devm_kzalloc(dev, sizeof(struct omap_sham_dev), GFP_KERNEL); |
8628e7c8 DK |
1913 | if (dd == NULL) { |
1914 | dev_err(dev, "unable to alloc data struct.\n"); | |
1915 | err = -ENOMEM; | |
1916 | goto data_err; | |
1917 | } | |
1918 | dd->dev = dev; | |
1919 | platform_set_drvdata(pdev, dd); | |
1920 | ||
1921 | INIT_LIST_HEAD(&dd->list); | |
1922 | spin_lock_init(&dd->lock); | |
1923 | tasklet_init(&dd->done_task, omap_sham_done_task, (unsigned long)dd); | |
8628e7c8 DK |
1924 | crypto_init_queue(&dd->queue, OMAP_SHAM_QUEUE_LENGTH); |
1925 | ||
03feec9c MG |
1926 | err = (dev->of_node) ? omap_sham_get_res_of(dd, dev, &res) : |
1927 | omap_sham_get_res_pdev(dd, pdev, &res); | |
1928 | if (err) | |
7a7e4b73 | 1929 | goto data_err; |
8628e7c8 | 1930 | |
30862281 LN |
1931 | dd->io_base = devm_ioremap_resource(dev, &res); |
1932 | if (IS_ERR(dd->io_base)) { | |
1933 | err = PTR_ERR(dd->io_base); | |
7a7e4b73 | 1934 | goto data_err; |
8628e7c8 | 1935 | } |
03feec9c | 1936 | dd->phys_base = res.start; |
8628e7c8 | 1937 | |
0de9c387 LV |
1938 | err = devm_request_irq(dev, dd->irq, dd->pdata->intr_hdlr, |
1939 | IRQF_TRIGGER_NONE, dev_name(dev), dd); | |
8628e7c8 | 1940 | if (err) { |
0de9c387 LV |
1941 | dev_err(dev, "unable to request irq %d, err = %d\n", |
1942 | dd->irq, err); | |
7a7e4b73 | 1943 | goto data_err; |
8628e7c8 DK |
1944 | } |
1945 | ||
dfd061d5 MG |
1946 | dma_cap_zero(mask); |
1947 | dma_cap_set(DMA_SLAVE, mask); | |
8628e7c8 | 1948 | |
0e87e73f MG |
1949 | dd->dma_lch = dma_request_slave_channel_compat(mask, omap_dma_filter_fn, |
1950 | &dd->dma, dev, "rx"); | |
dfd061d5 | 1951 | if (!dd->dma_lch) { |
b8411ccd LV |
1952 | dd->polling_mode = 1; |
1953 | dev_dbg(dev, "using polling mode instead of dma\n"); | |
8628e7c8 DK |
1954 | } |
1955 | ||
0d373d60 | 1956 | dd->flags |= dd->pdata->flags; |
8628e7c8 | 1957 | |
b359f034 | 1958 | pm_runtime_enable(dev); |
b0a3d898 | 1959 | pm_runtime_irq_safe(dev); |
604c3103 PR |
1960 | |
1961 | err = pm_runtime_get_sync(dev); | |
1962 | if (err < 0) { | |
1963 | dev_err(dev, "failed to get sync: %d\n", err); | |
1964 | goto err_pm; | |
1965 | } | |
1966 | ||
0d373d60 MG |
1967 | rev = omap_sham_read(dd, SHA_REG_REV(dd)); |
1968 | pm_runtime_put_sync(&pdev->dev); | |
8628e7c8 | 1969 | |
8628e7c8 | 1970 | dev_info(dev, "hw accel on OMAP rev %u.%u\n", |
0d373d60 MG |
1971 | (rev & dd->pdata->major_mask) >> dd->pdata->major_shift, |
1972 | (rev & dd->pdata->minor_mask) >> dd->pdata->minor_shift); | |
8628e7c8 DK |
1973 | |
1974 | spin_lock(&sham.lock); | |
1975 | list_add_tail(&dd->list, &sham.dev_list); | |
1976 | spin_unlock(&sham.lock); | |
1977 | ||
d20fb18b MG |
1978 | for (i = 0; i < dd->pdata->algs_info_size; i++) { |
1979 | for (j = 0; j < dd->pdata->algs_info[i].size; j++) { | |
1980 | err = crypto_register_ahash( | |
1981 | &dd->pdata->algs_info[i].algs_list[j]); | |
1982 | if (err) | |
1983 | goto err_algs; | |
1984 | ||
1985 | dd->pdata->algs_info[i].registered++; | |
1986 | } | |
8628e7c8 DK |
1987 | } |
1988 | ||
1989 | return 0; | |
1990 | ||
1991 | err_algs: | |
d20fb18b MG |
1992 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
1993 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) | |
1994 | crypto_unregister_ahash( | |
1995 | &dd->pdata->algs_info[i].algs_list[j]); | |
604c3103 | 1996 | err_pm: |
b359f034 | 1997 | pm_runtime_disable(dev); |
f13ab86a MG |
1998 | if (dd->dma_lch) |
1999 | dma_release_channel(dd->dma_lch); | |
8628e7c8 DK |
2000 | data_err: |
2001 | dev_err(dev, "initialization failed.\n"); | |
2002 | ||
2003 | return err; | |
2004 | } | |
2005 | ||
49cfe4db | 2006 | static int omap_sham_remove(struct platform_device *pdev) |
8628e7c8 DK |
2007 | { |
2008 | static struct omap_sham_dev *dd; | |
d20fb18b | 2009 | int i, j; |
8628e7c8 DK |
2010 | |
2011 | dd = platform_get_drvdata(pdev); | |
2012 | if (!dd) | |
2013 | return -ENODEV; | |
2014 | spin_lock(&sham.lock); | |
2015 | list_del(&dd->list); | |
2016 | spin_unlock(&sham.lock); | |
d20fb18b MG |
2017 | for (i = dd->pdata->algs_info_size - 1; i >= 0; i--) |
2018 | for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--) | |
2019 | crypto_unregister_ahash( | |
2020 | &dd->pdata->algs_info[i].algs_list[j]); | |
8628e7c8 | 2021 | tasklet_kill(&dd->done_task); |
b359f034 | 2022 | pm_runtime_disable(&pdev->dev); |
f13ab86a MG |
2023 | |
2024 | if (dd->dma_lch) | |
2025 | dma_release_channel(dd->dma_lch); | |
8628e7c8 DK |
2026 | |
2027 | return 0; | |
2028 | } | |
2029 | ||
3b3f4400 MG |
2030 | #ifdef CONFIG_PM_SLEEP |
2031 | static int omap_sham_suspend(struct device *dev) | |
2032 | { | |
2033 | pm_runtime_put_sync(dev); | |
2034 | return 0; | |
2035 | } | |
2036 | ||
2037 | static int omap_sham_resume(struct device *dev) | |
2038 | { | |
604c3103 PR |
2039 | int err = pm_runtime_get_sync(dev); |
2040 | if (err < 0) { | |
2041 | dev_err(dev, "failed to get sync: %d\n", err); | |
2042 | return err; | |
2043 | } | |
3b3f4400 MG |
2044 | return 0; |
2045 | } | |
2046 | #endif | |
2047 | ||
ae12fe28 | 2048 | static SIMPLE_DEV_PM_OPS(omap_sham_pm_ops, omap_sham_suspend, omap_sham_resume); |
3b3f4400 | 2049 | |
8628e7c8 DK |
2050 | static struct platform_driver omap_sham_driver = { |
2051 | .probe = omap_sham_probe, | |
2052 | .remove = omap_sham_remove, | |
2053 | .driver = { | |
2054 | .name = "omap-sham", | |
3b3f4400 | 2055 | .pm = &omap_sham_pm_ops, |
03feec9c | 2056 | .of_match_table = omap_sham_of_match, |
8628e7c8 DK |
2057 | }, |
2058 | }; | |
2059 | ||
02613702 | 2060 | module_platform_driver(omap_sham_driver); |
8628e7c8 DK |
2061 | |
2062 | MODULE_DESCRIPTION("OMAP SHA1/MD5 hw acceleration support."); | |
2063 | MODULE_LICENSE("GPL v2"); | |
2064 | MODULE_AUTHOR("Dmitry Kasatkin"); | |
718249d7 | 2065 | MODULE_ALIAS("platform:omap-sham"); |