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11#include "rk3288_crypto.h"
12
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17
18static int zero_message_process(struct ahash_request *req)
19{
20 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
21 int rk_digest_size = crypto_ahash_digestsize(tfm);
22
23 switch (rk_digest_size) {
24 case SHA1_DIGEST_SIZE:
25 memcpy(req->result, sha1_zero_message_hash, rk_digest_size);
26 break;
27 case SHA256_DIGEST_SIZE:
28 memcpy(req->result, sha256_zero_message_hash, rk_digest_size);
29 break;
30 case MD5_DIGEST_SIZE:
31 memcpy(req->result, md5_zero_message_hash, rk_digest_size);
32 break;
33 default:
34 return -EINVAL;
35 }
36
37 return 0;
38}
39
40static void rk_ahash_crypto_complete(struct crypto_async_request *base, int err)
41{
42 if (base->complete)
43 base->complete(base, err);
44}
45
46static void rk_ahash_reg_init(struct rk_crypto_info *dev)
47{
48 struct ahash_request *req = ahash_request_cast(dev->async_req);
49 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
50 int reg_status = 0;
51
52 reg_status = CRYPTO_READ(dev, RK_CRYPTO_CTRL) |
53 RK_CRYPTO_HASH_FLUSH | _SBF(0xffff, 16);
54 CRYPTO_WRITE(dev, RK_CRYPTO_CTRL, reg_status);
55
56 reg_status = CRYPTO_READ(dev, RK_CRYPTO_CTRL);
57 reg_status &= (~RK_CRYPTO_HASH_FLUSH);
58 reg_status |= _SBF(0xffff, 16);
59 CRYPTO_WRITE(dev, RK_CRYPTO_CTRL, reg_status);
60
61 memset_io(dev->reg + RK_CRYPTO_HASH_DOUT_0, 0, 32);
62
63 CRYPTO_WRITE(dev, RK_CRYPTO_INTENA, RK_CRYPTO_HRDMA_ERR_ENA |
64 RK_CRYPTO_HRDMA_DONE_ENA);
65
66 CRYPTO_WRITE(dev, RK_CRYPTO_INTSTS, RK_CRYPTO_HRDMA_ERR_INT |
67 RK_CRYPTO_HRDMA_DONE_INT);
68
69 CRYPTO_WRITE(dev, RK_CRYPTO_HASH_CTRL, rctx->mode |
70 RK_CRYPTO_HASH_SWAP_DO);
71
72 CRYPTO_WRITE(dev, RK_CRYPTO_CONF, RK_CRYPTO_BYTESWAP_HRFIFO |
73 RK_CRYPTO_BYTESWAP_BRFIFO |
74 RK_CRYPTO_BYTESWAP_BTFIFO);
75
76 CRYPTO_WRITE(dev, RK_CRYPTO_HASH_MSG_LEN, dev->total);
77}
78
79static int rk_ahash_init(struct ahash_request *req)
80{
81 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
82 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
83 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
84
85 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
86 rctx->fallback_req.base.flags = req->base.flags &
87 CRYPTO_TFM_REQ_MAY_SLEEP;
88
89 return crypto_ahash_init(&rctx->fallback_req);
90}
91
92static int rk_ahash_update(struct ahash_request *req)
93{
94 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
95 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
96 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
97
98 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
99 rctx->fallback_req.base.flags = req->base.flags &
100 CRYPTO_TFM_REQ_MAY_SLEEP;
101 rctx->fallback_req.nbytes = req->nbytes;
102 rctx->fallback_req.src = req->src;
103
104 return crypto_ahash_update(&rctx->fallback_req);
105}
106
107static int rk_ahash_final(struct ahash_request *req)
108{
109 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
110 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
111 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
112
113 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
114 rctx->fallback_req.base.flags = req->base.flags &
115 CRYPTO_TFM_REQ_MAY_SLEEP;
116 rctx->fallback_req.result = req->result;
117
118 return crypto_ahash_final(&rctx->fallback_req);
119}
120
121static int rk_ahash_finup(struct ahash_request *req)
122{
123 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
124 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
125 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
126
127 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
128 rctx->fallback_req.base.flags = req->base.flags &
129 CRYPTO_TFM_REQ_MAY_SLEEP;
130
131 rctx->fallback_req.nbytes = req->nbytes;
132 rctx->fallback_req.src = req->src;
133 rctx->fallback_req.result = req->result;
134
135 return crypto_ahash_finup(&rctx->fallback_req);
136}
137
138static int rk_ahash_import(struct ahash_request *req, const void *in)
139{
140 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
141 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
142 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
143
144 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
145 rctx->fallback_req.base.flags = req->base.flags &
146 CRYPTO_TFM_REQ_MAY_SLEEP;
147
148 return crypto_ahash_import(&rctx->fallback_req, in);
149}
150
151static int rk_ahash_export(struct ahash_request *req, void *out)
152{
153 struct rk_ahash_rctx *rctx = ahash_request_ctx(req);
154 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
155 struct rk_ahash_ctx *ctx = crypto_ahash_ctx(tfm);
156
157 ahash_request_set_tfm(&rctx->fallback_req, ctx->fallback_tfm);
158 rctx->fallback_req.base.flags = req->base.flags &
159 CRYPTO_TFM_REQ_MAY_SLEEP;
160
161 return crypto_ahash_export(&rctx->fallback_req, out);
162}
163
164static int rk_ahash_digest(struct ahash_request *req)
165{
166 struct rk_ahash_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
167 struct rk_crypto_info *dev = tctx->dev;
168
169 if (!req->nbytes)
170 return zero_message_process(req);
171 else
172 return dev->enqueue(dev, &req->base);
173}
174
175static void crypto_ahash_dma_start(struct rk_crypto_info *dev)
176{
177 CRYPTO_WRITE(dev, RK_CRYPTO_HRDMAS, dev->addr_in);
178 CRYPTO_WRITE(dev, RK_CRYPTO_HRDMAL, (dev->count + 3) / 4);
179 CRYPTO_WRITE(dev, RK_CRYPTO_CTRL, RK_CRYPTO_HASH_START |
180 (RK_CRYPTO_HASH_START << 16));
181}
182
183static int rk_ahash_set_data_start(struct rk_crypto_info *dev)
184{
185 int err;
186
187 err = dev->load_data(dev, dev->sg_src, NULL);
188 if (!err)
189 crypto_ahash_dma_start(dev);
190 return err;
191}
192
193static int rk_ahash_start(struct rk_crypto_info *dev)
194{
195 struct ahash_request *req = ahash_request_cast(dev->async_req);
196 struct crypto_ahash *tfm;
197 struct rk_ahash_rctx *rctx;
198
199 dev->total = req->nbytes;
200 dev->left_bytes = req->nbytes;
201 dev->aligned = 0;
202 dev->align_size = 4;
203 dev->sg_dst = NULL;
204 dev->sg_src = req->src;
205 dev->first = req->src;
206 dev->src_nents = sg_nents(req->src);
207 rctx = ahash_request_ctx(req);
208 rctx->mode = 0;
209
210 tfm = crypto_ahash_reqtfm(req);
211 switch (crypto_ahash_digestsize(tfm)) {
212 case SHA1_DIGEST_SIZE:
213 rctx->mode = RK_CRYPTO_HASH_SHA1;
214 break;
215 case SHA256_DIGEST_SIZE:
216 rctx->mode = RK_CRYPTO_HASH_SHA256;
217 break;
218 case MD5_DIGEST_SIZE:
219 rctx->mode = RK_CRYPTO_HASH_MD5;
220 break;
221 default:
222 return -EINVAL;
223 }
224
225 rk_ahash_reg_init(dev);
226 return rk_ahash_set_data_start(dev);
227}
228
229static int rk_ahash_crypto_rx(struct rk_crypto_info *dev)
230{
231 int err = 0;
232 struct ahash_request *req = ahash_request_cast(dev->async_req);
233 struct crypto_ahash *tfm;
234
235 dev->unload_data(dev);
236 if (dev->left_bytes) {
237 if (dev->aligned) {
238 if (sg_is_last(dev->sg_src)) {
239 dev_warn(dev->dev, "[%s:%d], Lack of data\n",
240 __func__, __LINE__);
241 err = -ENOMEM;
242 goto out_rx;
243 }
244 dev->sg_src = sg_next(dev->sg_src);
245 }
246 err = rk_ahash_set_data_start(dev);
247 } else {
248
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255
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257
258 while (!CRYPTO_READ(dev, RK_CRYPTO_HASH_STS))
259 udelay(10);
260
261 tfm = crypto_ahash_reqtfm(req);
262 memcpy_fromio(req->result, dev->reg + RK_CRYPTO_HASH_DOUT_0,
263 crypto_ahash_digestsize(tfm));
264 dev->complete(dev->async_req, 0);
265 tasklet_schedule(&dev->queue_task);
266 }
267
268out_rx:
269 return err;
270}
271
272static int rk_cra_hash_init(struct crypto_tfm *tfm)
273{
274 struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm);
275 struct rk_crypto_tmp *algt;
276 struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
277
278 const char *alg_name = crypto_tfm_alg_name(tfm);
279
280 algt = container_of(alg, struct rk_crypto_tmp, alg.hash);
281
282 tctx->dev = algt->dev;
283 tctx->dev->addr_vir = (void *)__get_free_page(GFP_KERNEL);
284 if (!tctx->dev->addr_vir) {
285 dev_err(tctx->dev->dev, "failed to kmalloc for addr_vir\n");
286 return -ENOMEM;
287 }
288 tctx->dev->start = rk_ahash_start;
289 tctx->dev->update = rk_ahash_crypto_rx;
290 tctx->dev->complete = rk_ahash_crypto_complete;
291
292
293 tctx->fallback_tfm = crypto_alloc_ahash(alg_name, 0,
294 CRYPTO_ALG_NEED_FALLBACK);
295 if (IS_ERR(tctx->fallback_tfm)) {
296 dev_err(tctx->dev->dev, "Could not load fallback driver.\n");
297 return PTR_ERR(tctx->fallback_tfm);
298 }
299 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
300 sizeof(struct rk_ahash_rctx) +
301 crypto_ahash_reqsize(tctx->fallback_tfm));
302
303 return tctx->dev->enable_clk(tctx->dev);
304}
305
306static void rk_cra_hash_exit(struct crypto_tfm *tfm)
307{
308 struct rk_ahash_ctx *tctx = crypto_tfm_ctx(tfm);
309
310 free_page((unsigned long)tctx->dev->addr_vir);
311 return tctx->dev->disable_clk(tctx->dev);
312}
313
314struct rk_crypto_tmp rk_ahash_sha1 = {
315 .type = ALG_TYPE_HASH,
316 .alg.hash = {
317 .init = rk_ahash_init,
318 .update = rk_ahash_update,
319 .final = rk_ahash_final,
320 .finup = rk_ahash_finup,
321 .export = rk_ahash_export,
322 .import = rk_ahash_import,
323 .digest = rk_ahash_digest,
324 .halg = {
325 .digestsize = SHA1_DIGEST_SIZE,
326 .statesize = sizeof(struct sha1_state),
327 .base = {
328 .cra_name = "sha1",
329 .cra_driver_name = "rk-sha1",
330 .cra_priority = 300,
331 .cra_flags = CRYPTO_ALG_ASYNC |
332 CRYPTO_ALG_NEED_FALLBACK,
333 .cra_blocksize = SHA1_BLOCK_SIZE,
334 .cra_ctxsize = sizeof(struct rk_ahash_ctx),
335 .cra_alignmask = 3,
336 .cra_init = rk_cra_hash_init,
337 .cra_exit = rk_cra_hash_exit,
338 .cra_module = THIS_MODULE,
339 }
340 }
341 }
342};
343
344struct rk_crypto_tmp rk_ahash_sha256 = {
345 .type = ALG_TYPE_HASH,
346 .alg.hash = {
347 .init = rk_ahash_init,
348 .update = rk_ahash_update,
349 .final = rk_ahash_final,
350 .finup = rk_ahash_finup,
351 .export = rk_ahash_export,
352 .import = rk_ahash_import,
353 .digest = rk_ahash_digest,
354 .halg = {
355 .digestsize = SHA256_DIGEST_SIZE,
356 .statesize = sizeof(struct sha256_state),
357 .base = {
358 .cra_name = "sha256",
359 .cra_driver_name = "rk-sha256",
360 .cra_priority = 300,
361 .cra_flags = CRYPTO_ALG_ASYNC |
362 CRYPTO_ALG_NEED_FALLBACK,
363 .cra_blocksize = SHA256_BLOCK_SIZE,
364 .cra_ctxsize = sizeof(struct rk_ahash_ctx),
365 .cra_alignmask = 3,
366 .cra_init = rk_cra_hash_init,
367 .cra_exit = rk_cra_hash_exit,
368 .cra_module = THIS_MODULE,
369 }
370 }
371 }
372};
373
374struct rk_crypto_tmp rk_ahash_md5 = {
375 .type = ALG_TYPE_HASH,
376 .alg.hash = {
377 .init = rk_ahash_init,
378 .update = rk_ahash_update,
379 .final = rk_ahash_final,
380 .finup = rk_ahash_finup,
381 .export = rk_ahash_export,
382 .import = rk_ahash_import,
383 .digest = rk_ahash_digest,
384 .halg = {
385 .digestsize = MD5_DIGEST_SIZE,
386 .statesize = sizeof(struct md5_state),
387 .base = {
388 .cra_name = "md5",
389 .cra_driver_name = "rk-md5",
390 .cra_priority = 300,
391 .cra_flags = CRYPTO_ALG_ASYNC |
392 CRYPTO_ALG_NEED_FALLBACK,
393 .cra_blocksize = SHA1_BLOCK_SIZE,
394 .cra_ctxsize = sizeof(struct rk_ahash_ctx),
395 .cra_alignmask = 3,
396 .cra_init = rk_cra_hash_init,
397 .cra_exit = rk_cra_hash_exit,
398 .cra_module = THIS_MODULE,
399 }
400 }
401 }
402};
403
