Commit | Line | Data |
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9c4a7965 KP |
1 | /* |
2 | * talitos - Freescale Integrated Security Engine (SEC) device driver | |
3 | * | |
5228f0f7 | 4 | * Copyright (c) 2008-2011 Freescale Semiconductor, Inc. |
9c4a7965 KP |
5 | * |
6 | * Scatterlist Crypto API glue code copied from files with the following: | |
7 | * Copyright (c) 2006-2007 Herbert Xu <herbert@gondor.apana.org.au> | |
8 | * | |
9 | * Crypto algorithm registration code copied from hifn driver: | |
10 | * 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru> | |
11 | * All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/mod_devicetable.h> | |
31 | #include <linux/device.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/crypto.h> | |
34 | #include <linux/hw_random.h> | |
35 | #include <linux/of_platform.h> | |
36 | #include <linux/dma-mapping.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/rtnetlink.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
9c4a7965 KP |
41 | |
42 | #include <crypto/algapi.h> | |
43 | #include <crypto/aes.h> | |
3952f17e | 44 | #include <crypto/des.h> |
9c4a7965 | 45 | #include <crypto/sha.h> |
497f2e6b | 46 | #include <crypto/md5.h> |
9c4a7965 KP |
47 | #include <crypto/aead.h> |
48 | #include <crypto/authenc.h> | |
4de9d0b5 | 49 | #include <crypto/skcipher.h> |
acbf7c62 LN |
50 | #include <crypto/hash.h> |
51 | #include <crypto/internal/hash.h> | |
4de9d0b5 | 52 | #include <crypto/scatterwalk.h> |
9c4a7965 KP |
53 | |
54 | #include "talitos.h" | |
55 | ||
56 | #define TALITOS_TIMEOUT 100000 | |
57 | #define TALITOS_MAX_DATA_LEN 65535 | |
58 | ||
59 | #define DESC_TYPE(desc_hdr) ((be32_to_cpu(desc_hdr) >> 3) & 0x1f) | |
60 | #define PRIMARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 28) & 0xf) | |
61 | #define SECONDARY_EU(desc_hdr) ((be32_to_cpu(desc_hdr) >> 16) & 0xf) | |
62 | ||
63 | /* descriptor pointer entry */ | |
64 | struct talitos_ptr { | |
65 | __be16 len; /* length */ | |
66 | u8 j_extent; /* jump to sg link table and/or extent */ | |
67 | u8 eptr; /* extended address */ | |
68 | __be32 ptr; /* address */ | |
69 | }; | |
70 | ||
497f2e6b LN |
71 | static const struct talitos_ptr zero_entry = { |
72 | .len = 0, | |
73 | .j_extent = 0, | |
74 | .eptr = 0, | |
75 | .ptr = 0 | |
76 | }; | |
77 | ||
9c4a7965 KP |
78 | /* descriptor */ |
79 | struct talitos_desc { | |
80 | __be32 hdr; /* header high bits */ | |
81 | __be32 hdr_lo; /* header low bits */ | |
82 | struct talitos_ptr ptr[7]; /* ptr/len pair array */ | |
83 | }; | |
84 | ||
85 | /** | |
86 | * talitos_request - descriptor submission request | |
87 | * @desc: descriptor pointer (kernel virtual) | |
88 | * @dma_desc: descriptor's physical bus address | |
89 | * @callback: whom to call when descriptor processing is done | |
90 | * @context: caller context (optional) | |
91 | */ | |
92 | struct talitos_request { | |
93 | struct talitos_desc *desc; | |
94 | dma_addr_t dma_desc; | |
95 | void (*callback) (struct device *dev, struct talitos_desc *desc, | |
96 | void *context, int error); | |
97 | void *context; | |
98 | }; | |
99 | ||
4b992628 KP |
100 | /* per-channel fifo management */ |
101 | struct talitos_channel { | |
ad42d5fc KP |
102 | void __iomem *reg; |
103 | ||
4b992628 KP |
104 | /* request fifo */ |
105 | struct talitos_request *fifo; | |
106 | ||
107 | /* number of requests pending in channel h/w fifo */ | |
108 | atomic_t submit_count ____cacheline_aligned; | |
109 | ||
110 | /* request submission (head) lock */ | |
111 | spinlock_t head_lock ____cacheline_aligned; | |
112 | /* index to next free descriptor request */ | |
113 | int head; | |
114 | ||
115 | /* request release (tail) lock */ | |
116 | spinlock_t tail_lock ____cacheline_aligned; | |
117 | /* index to next in-progress/done descriptor request */ | |
118 | int tail; | |
119 | }; | |
120 | ||
9c4a7965 KP |
121 | struct talitos_private { |
122 | struct device *dev; | |
2dc11581 | 123 | struct platform_device *ofdev; |
9c4a7965 | 124 | void __iomem *reg; |
c3e337f8 | 125 | int irq[2]; |
9c4a7965 | 126 | |
511d63cb HG |
127 | /* SEC global registers lock */ |
128 | spinlock_t reg_lock ____cacheline_aligned; | |
129 | ||
9c4a7965 KP |
130 | /* SEC version geometry (from device tree node) */ |
131 | unsigned int num_channels; | |
132 | unsigned int chfifo_len; | |
133 | unsigned int exec_units; | |
134 | unsigned int desc_types; | |
135 | ||
f3c85bc1 LN |
136 | /* SEC Compatibility info */ |
137 | unsigned long features; | |
138 | ||
9c4a7965 KP |
139 | /* |
140 | * length of the request fifo | |
141 | * fifo_len is chfifo_len rounded up to next power of 2 | |
142 | * so we can use bitwise ops to wrap | |
143 | */ | |
144 | unsigned int fifo_len; | |
145 | ||
4b992628 | 146 | struct talitos_channel *chan; |
9c4a7965 | 147 | |
4b992628 KP |
148 | /* next channel to be assigned next incoming descriptor */ |
149 | atomic_t last_chan ____cacheline_aligned; | |
9c4a7965 KP |
150 | |
151 | /* request callback tasklet */ | |
c3e337f8 | 152 | struct tasklet_struct done_task[2]; |
9c4a7965 KP |
153 | |
154 | /* list of registered algorithms */ | |
155 | struct list_head alg_list; | |
156 | ||
157 | /* hwrng device */ | |
158 | struct hwrng rng; | |
159 | }; | |
160 | ||
f3c85bc1 LN |
161 | /* .features flag */ |
162 | #define TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT 0x00000001 | |
fe5720e2 | 163 | #define TALITOS_FTR_HW_AUTH_CHECK 0x00000002 |
60f208d7 | 164 | #define TALITOS_FTR_SHA224_HWINIT 0x00000004 |
79b3a418 | 165 | #define TALITOS_FTR_HMAC_OK 0x00000008 |
f3c85bc1 | 166 | |
81eb024c KP |
167 | static void to_talitos_ptr(struct talitos_ptr *talitos_ptr, dma_addr_t dma_addr) |
168 | { | |
169 | talitos_ptr->ptr = cpu_to_be32(lower_32_bits(dma_addr)); | |
a752447a | 170 | talitos_ptr->eptr = upper_32_bits(dma_addr); |
81eb024c KP |
171 | } |
172 | ||
9c4a7965 KP |
173 | /* |
174 | * map virtual single (contiguous) pointer to h/w descriptor pointer | |
175 | */ | |
176 | static void map_single_talitos_ptr(struct device *dev, | |
177 | struct talitos_ptr *talitos_ptr, | |
178 | unsigned short len, void *data, | |
179 | unsigned char extent, | |
180 | enum dma_data_direction dir) | |
181 | { | |
81eb024c KP |
182 | dma_addr_t dma_addr = dma_map_single(dev, data, len, dir); |
183 | ||
9c4a7965 | 184 | talitos_ptr->len = cpu_to_be16(len); |
81eb024c | 185 | to_talitos_ptr(talitos_ptr, dma_addr); |
9c4a7965 KP |
186 | talitos_ptr->j_extent = extent; |
187 | } | |
188 | ||
189 | /* | |
190 | * unmap bus single (contiguous) h/w descriptor pointer | |
191 | */ | |
192 | static void unmap_single_talitos_ptr(struct device *dev, | |
193 | struct talitos_ptr *talitos_ptr, | |
194 | enum dma_data_direction dir) | |
195 | { | |
196 | dma_unmap_single(dev, be32_to_cpu(talitos_ptr->ptr), | |
197 | be16_to_cpu(talitos_ptr->len), dir); | |
198 | } | |
199 | ||
200 | static int reset_channel(struct device *dev, int ch) | |
201 | { | |
202 | struct talitos_private *priv = dev_get_drvdata(dev); | |
203 | unsigned int timeout = TALITOS_TIMEOUT; | |
204 | ||
ad42d5fc | 205 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, TALITOS_CCCR_RESET); |
9c4a7965 | 206 | |
ad42d5fc | 207 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & TALITOS_CCCR_RESET) |
9c4a7965 KP |
208 | && --timeout) |
209 | cpu_relax(); | |
210 | ||
211 | if (timeout == 0) { | |
212 | dev_err(dev, "failed to reset channel %d\n", ch); | |
213 | return -EIO; | |
214 | } | |
215 | ||
81eb024c | 216 | /* set 36-bit addressing, done writeback enable and done IRQ enable */ |
ad42d5fc | 217 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, TALITOS_CCCR_LO_EAE | |
81eb024c | 218 | TALITOS_CCCR_LO_CDWE | TALITOS_CCCR_LO_CDIE); |
9c4a7965 | 219 | |
fe5720e2 KP |
220 | /* and ICCR writeback, if available */ |
221 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
ad42d5fc | 222 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, |
fe5720e2 KP |
223 | TALITOS_CCCR_LO_IWSE); |
224 | ||
9c4a7965 KP |
225 | return 0; |
226 | } | |
227 | ||
228 | static int reset_device(struct device *dev) | |
229 | { | |
230 | struct talitos_private *priv = dev_get_drvdata(dev); | |
231 | unsigned int timeout = TALITOS_TIMEOUT; | |
c3e337f8 | 232 | u32 mcr = TALITOS_MCR_SWR; |
9c4a7965 | 233 | |
c3e337f8 | 234 | setbits32(priv->reg + TALITOS_MCR, mcr); |
9c4a7965 KP |
235 | |
236 | while ((in_be32(priv->reg + TALITOS_MCR) & TALITOS_MCR_SWR) | |
237 | && --timeout) | |
238 | cpu_relax(); | |
239 | ||
2cdba3cf | 240 | if (priv->irq[1]) { |
c3e337f8 KP |
241 | mcr = TALITOS_MCR_RCA1 | TALITOS_MCR_RCA3; |
242 | setbits32(priv->reg + TALITOS_MCR, mcr); | |
243 | } | |
244 | ||
9c4a7965 KP |
245 | if (timeout == 0) { |
246 | dev_err(dev, "failed to reset device\n"); | |
247 | return -EIO; | |
248 | } | |
249 | ||
250 | return 0; | |
251 | } | |
252 | ||
253 | /* | |
254 | * Reset and initialize the device | |
255 | */ | |
256 | static int init_device(struct device *dev) | |
257 | { | |
258 | struct talitos_private *priv = dev_get_drvdata(dev); | |
259 | int ch, err; | |
260 | ||
261 | /* | |
262 | * Master reset | |
263 | * errata documentation: warning: certain SEC interrupts | |
264 | * are not fully cleared by writing the MCR:SWR bit, | |
265 | * set bit twice to completely reset | |
266 | */ | |
267 | err = reset_device(dev); | |
268 | if (err) | |
269 | return err; | |
270 | ||
271 | err = reset_device(dev); | |
272 | if (err) | |
273 | return err; | |
274 | ||
275 | /* reset channels */ | |
276 | for (ch = 0; ch < priv->num_channels; ch++) { | |
277 | err = reset_channel(dev, ch); | |
278 | if (err) | |
279 | return err; | |
280 | } | |
281 | ||
282 | /* enable channel done and error interrupts */ | |
283 | setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_INIT); | |
284 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); | |
285 | ||
fe5720e2 KP |
286 | /* disable integrity check error interrupts (use writeback instead) */ |
287 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
288 | setbits32(priv->reg + TALITOS_MDEUICR_LO, | |
289 | TALITOS_MDEUICR_LO_ICE); | |
290 | ||
9c4a7965 KP |
291 | return 0; |
292 | } | |
293 | ||
294 | /** | |
295 | * talitos_submit - submits a descriptor to the device for processing | |
296 | * @dev: the SEC device to be used | |
5228f0f7 | 297 | * @ch: the SEC device channel to be used |
9c4a7965 KP |
298 | * @desc: the descriptor to be processed by the device |
299 | * @callback: whom to call when processing is complete | |
300 | * @context: a handle for use by caller (optional) | |
301 | * | |
302 | * desc must contain valid dma-mapped (bus physical) address pointers. | |
303 | * callback must check err and feedback in descriptor header | |
304 | * for device processing status. | |
305 | */ | |
5228f0f7 | 306 | static int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc, |
9c4a7965 KP |
307 | void (*callback)(struct device *dev, |
308 | struct talitos_desc *desc, | |
309 | void *context, int error), | |
310 | void *context) | |
311 | { | |
312 | struct talitos_private *priv = dev_get_drvdata(dev); | |
313 | struct talitos_request *request; | |
5228f0f7 | 314 | unsigned long flags; |
9c4a7965 KP |
315 | int head; |
316 | ||
4b992628 | 317 | spin_lock_irqsave(&priv->chan[ch].head_lock, flags); |
9c4a7965 | 318 | |
4b992628 | 319 | if (!atomic_inc_not_zero(&priv->chan[ch].submit_count)) { |
ec6644d6 | 320 | /* h/w fifo is full */ |
4b992628 | 321 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
322 | return -EAGAIN; |
323 | } | |
324 | ||
4b992628 KP |
325 | head = priv->chan[ch].head; |
326 | request = &priv->chan[ch].fifo[head]; | |
ec6644d6 | 327 | |
9c4a7965 KP |
328 | /* map descriptor and save caller data */ |
329 | request->dma_desc = dma_map_single(dev, desc, sizeof(*desc), | |
330 | DMA_BIDIRECTIONAL); | |
331 | request->callback = callback; | |
332 | request->context = context; | |
333 | ||
334 | /* increment fifo head */ | |
4b992628 | 335 | priv->chan[ch].head = (priv->chan[ch].head + 1) & (priv->fifo_len - 1); |
9c4a7965 KP |
336 | |
337 | smp_wmb(); | |
338 | request->desc = desc; | |
339 | ||
340 | /* GO! */ | |
341 | wmb(); | |
ad42d5fc KP |
342 | out_be32(priv->chan[ch].reg + TALITOS_FF, |
343 | upper_32_bits(request->dma_desc)); | |
344 | out_be32(priv->chan[ch].reg + TALITOS_FF_LO, | |
a752447a | 345 | lower_32_bits(request->dma_desc)); |
9c4a7965 | 346 | |
4b992628 | 347 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
348 | |
349 | return -EINPROGRESS; | |
350 | } | |
351 | ||
352 | /* | |
353 | * process what was done, notify callback of error if not | |
354 | */ | |
355 | static void flush_channel(struct device *dev, int ch, int error, int reset_ch) | |
356 | { | |
357 | struct talitos_private *priv = dev_get_drvdata(dev); | |
358 | struct talitos_request *request, saved_req; | |
359 | unsigned long flags; | |
360 | int tail, status; | |
361 | ||
4b992628 | 362 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
9c4a7965 | 363 | |
4b992628 KP |
364 | tail = priv->chan[ch].tail; |
365 | while (priv->chan[ch].fifo[tail].desc) { | |
366 | request = &priv->chan[ch].fifo[tail]; | |
9c4a7965 KP |
367 | |
368 | /* descriptors with their done bits set don't get the error */ | |
369 | rmb(); | |
ca38a814 | 370 | if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE) |
9c4a7965 | 371 | status = 0; |
ca38a814 | 372 | else |
9c4a7965 KP |
373 | if (!error) |
374 | break; | |
375 | else | |
376 | status = error; | |
377 | ||
378 | dma_unmap_single(dev, request->dma_desc, | |
e938e465 KP |
379 | sizeof(struct talitos_desc), |
380 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
381 | |
382 | /* copy entries so we can call callback outside lock */ | |
383 | saved_req.desc = request->desc; | |
384 | saved_req.callback = request->callback; | |
385 | saved_req.context = request->context; | |
386 | ||
387 | /* release request entry in fifo */ | |
388 | smp_wmb(); | |
389 | request->desc = NULL; | |
390 | ||
391 | /* increment fifo tail */ | |
4b992628 | 392 | priv->chan[ch].tail = (tail + 1) & (priv->fifo_len - 1); |
9c4a7965 | 393 | |
4b992628 | 394 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
ec6644d6 | 395 | |
4b992628 | 396 | atomic_dec(&priv->chan[ch].submit_count); |
ec6644d6 | 397 | |
9c4a7965 KP |
398 | saved_req.callback(dev, saved_req.desc, saved_req.context, |
399 | status); | |
400 | /* channel may resume processing in single desc error case */ | |
401 | if (error && !reset_ch && status == error) | |
402 | return; | |
4b992628 KP |
403 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
404 | tail = priv->chan[ch].tail; | |
9c4a7965 KP |
405 | } |
406 | ||
4b992628 | 407 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
9c4a7965 KP |
408 | } |
409 | ||
410 | /* | |
411 | * process completed requests for channels that have done status | |
412 | */ | |
c3e337f8 KP |
413 | #define DEF_TALITOS_DONE(name, ch_done_mask) \ |
414 | static void talitos_done_##name(unsigned long data) \ | |
415 | { \ | |
416 | struct device *dev = (struct device *)data; \ | |
417 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
511d63cb | 418 | unsigned long flags; \ |
c3e337f8 KP |
419 | \ |
420 | if (ch_done_mask & 1) \ | |
421 | flush_channel(dev, 0, 0, 0); \ | |
422 | if (priv->num_channels == 1) \ | |
423 | goto out; \ | |
424 | if (ch_done_mask & (1 << 2)) \ | |
425 | flush_channel(dev, 1, 0, 0); \ | |
426 | if (ch_done_mask & (1 << 4)) \ | |
427 | flush_channel(dev, 2, 0, 0); \ | |
428 | if (ch_done_mask & (1 << 6)) \ | |
429 | flush_channel(dev, 3, 0, 0); \ | |
430 | \ | |
431 | out: \ | |
432 | /* At this point, all completed channels have been processed */ \ | |
433 | /* Unmask done interrupts for channels completed later on. */ \ | |
511d63cb | 434 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
435 | setbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ |
436 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); \ | |
511d63cb | 437 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
9c4a7965 | 438 | } |
c3e337f8 KP |
439 | DEF_TALITOS_DONE(4ch, TALITOS_ISR_4CHDONE) |
440 | DEF_TALITOS_DONE(ch0_2, TALITOS_ISR_CH_0_2_DONE) | |
441 | DEF_TALITOS_DONE(ch1_3, TALITOS_ISR_CH_1_3_DONE) | |
9c4a7965 KP |
442 | |
443 | /* | |
444 | * locate current (offending) descriptor | |
445 | */ | |
3e721aeb | 446 | static u32 current_desc_hdr(struct device *dev, int ch) |
9c4a7965 KP |
447 | { |
448 | struct talitos_private *priv = dev_get_drvdata(dev); | |
4b992628 | 449 | int tail = priv->chan[ch].tail; |
9c4a7965 KP |
450 | dma_addr_t cur_desc; |
451 | ||
ad42d5fc | 452 | cur_desc = in_be32(priv->chan[ch].reg + TALITOS_CDPR_LO); |
9c4a7965 | 453 | |
4b992628 | 454 | while (priv->chan[ch].fifo[tail].dma_desc != cur_desc) { |
9c4a7965 | 455 | tail = (tail + 1) & (priv->fifo_len - 1); |
4b992628 | 456 | if (tail == priv->chan[ch].tail) { |
9c4a7965 | 457 | dev_err(dev, "couldn't locate current descriptor\n"); |
3e721aeb | 458 | return 0; |
9c4a7965 KP |
459 | } |
460 | } | |
461 | ||
3e721aeb | 462 | return priv->chan[ch].fifo[tail].desc->hdr; |
9c4a7965 KP |
463 | } |
464 | ||
465 | /* | |
466 | * user diagnostics; report root cause of error based on execution unit status | |
467 | */ | |
3e721aeb | 468 | static void report_eu_error(struct device *dev, int ch, u32 desc_hdr) |
9c4a7965 KP |
469 | { |
470 | struct talitos_private *priv = dev_get_drvdata(dev); | |
471 | int i; | |
472 | ||
3e721aeb | 473 | if (!desc_hdr) |
ad42d5fc | 474 | desc_hdr = in_be32(priv->chan[ch].reg + TALITOS_DESCBUF); |
3e721aeb KP |
475 | |
476 | switch (desc_hdr & DESC_HDR_SEL0_MASK) { | |
9c4a7965 KP |
477 | case DESC_HDR_SEL0_AFEU: |
478 | dev_err(dev, "AFEUISR 0x%08x_%08x\n", | |
479 | in_be32(priv->reg + TALITOS_AFEUISR), | |
480 | in_be32(priv->reg + TALITOS_AFEUISR_LO)); | |
481 | break; | |
482 | case DESC_HDR_SEL0_DEU: | |
483 | dev_err(dev, "DEUISR 0x%08x_%08x\n", | |
484 | in_be32(priv->reg + TALITOS_DEUISR), | |
485 | in_be32(priv->reg + TALITOS_DEUISR_LO)); | |
486 | break; | |
487 | case DESC_HDR_SEL0_MDEUA: | |
488 | case DESC_HDR_SEL0_MDEUB: | |
489 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
490 | in_be32(priv->reg + TALITOS_MDEUISR), | |
491 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
492 | break; | |
493 | case DESC_HDR_SEL0_RNG: | |
494 | dev_err(dev, "RNGUISR 0x%08x_%08x\n", | |
495 | in_be32(priv->reg + TALITOS_RNGUISR), | |
496 | in_be32(priv->reg + TALITOS_RNGUISR_LO)); | |
497 | break; | |
498 | case DESC_HDR_SEL0_PKEU: | |
499 | dev_err(dev, "PKEUISR 0x%08x_%08x\n", | |
500 | in_be32(priv->reg + TALITOS_PKEUISR), | |
501 | in_be32(priv->reg + TALITOS_PKEUISR_LO)); | |
502 | break; | |
503 | case DESC_HDR_SEL0_AESU: | |
504 | dev_err(dev, "AESUISR 0x%08x_%08x\n", | |
505 | in_be32(priv->reg + TALITOS_AESUISR), | |
506 | in_be32(priv->reg + TALITOS_AESUISR_LO)); | |
507 | break; | |
508 | case DESC_HDR_SEL0_CRCU: | |
509 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
510 | in_be32(priv->reg + TALITOS_CRCUISR), | |
511 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
512 | break; | |
513 | case DESC_HDR_SEL0_KEU: | |
514 | dev_err(dev, "KEUISR 0x%08x_%08x\n", | |
515 | in_be32(priv->reg + TALITOS_KEUISR), | |
516 | in_be32(priv->reg + TALITOS_KEUISR_LO)); | |
517 | break; | |
518 | } | |
519 | ||
3e721aeb | 520 | switch (desc_hdr & DESC_HDR_SEL1_MASK) { |
9c4a7965 KP |
521 | case DESC_HDR_SEL1_MDEUA: |
522 | case DESC_HDR_SEL1_MDEUB: | |
523 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
524 | in_be32(priv->reg + TALITOS_MDEUISR), | |
525 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
526 | break; | |
527 | case DESC_HDR_SEL1_CRCU: | |
528 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
529 | in_be32(priv->reg + TALITOS_CRCUISR), | |
530 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
531 | break; | |
532 | } | |
533 | ||
534 | for (i = 0; i < 8; i++) | |
535 | dev_err(dev, "DESCBUF 0x%08x_%08x\n", | |
ad42d5fc KP |
536 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF + 8*i), |
537 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF_LO + 8*i)); | |
9c4a7965 KP |
538 | } |
539 | ||
540 | /* | |
541 | * recover from error interrupts | |
542 | */ | |
5e718a09 | 543 | static void talitos_error(struct device *dev, u32 isr, u32 isr_lo) |
9c4a7965 | 544 | { |
9c4a7965 KP |
545 | struct talitos_private *priv = dev_get_drvdata(dev); |
546 | unsigned int timeout = TALITOS_TIMEOUT; | |
547 | int ch, error, reset_dev = 0, reset_ch = 0; | |
40405f10 | 548 | u32 v, v_lo; |
9c4a7965 KP |
549 | |
550 | for (ch = 0; ch < priv->num_channels; ch++) { | |
551 | /* skip channels without errors */ | |
552 | if (!(isr & (1 << (ch * 2 + 1)))) | |
553 | continue; | |
554 | ||
555 | error = -EINVAL; | |
556 | ||
ad42d5fc KP |
557 | v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR); |
558 | v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO); | |
9c4a7965 KP |
559 | |
560 | if (v_lo & TALITOS_CCPSR_LO_DOF) { | |
561 | dev_err(dev, "double fetch fifo overflow error\n"); | |
562 | error = -EAGAIN; | |
563 | reset_ch = 1; | |
564 | } | |
565 | if (v_lo & TALITOS_CCPSR_LO_SOF) { | |
566 | /* h/w dropped descriptor */ | |
567 | dev_err(dev, "single fetch fifo overflow error\n"); | |
568 | error = -EAGAIN; | |
569 | } | |
570 | if (v_lo & TALITOS_CCPSR_LO_MDTE) | |
571 | dev_err(dev, "master data transfer error\n"); | |
572 | if (v_lo & TALITOS_CCPSR_LO_SGDLZ) | |
573 | dev_err(dev, "s/g data length zero error\n"); | |
574 | if (v_lo & TALITOS_CCPSR_LO_FPZ) | |
575 | dev_err(dev, "fetch pointer zero error\n"); | |
576 | if (v_lo & TALITOS_CCPSR_LO_IDH) | |
577 | dev_err(dev, "illegal descriptor header error\n"); | |
578 | if (v_lo & TALITOS_CCPSR_LO_IEU) | |
579 | dev_err(dev, "invalid execution unit error\n"); | |
580 | if (v_lo & TALITOS_CCPSR_LO_EU) | |
3e721aeb | 581 | report_eu_error(dev, ch, current_desc_hdr(dev, ch)); |
9c4a7965 KP |
582 | if (v_lo & TALITOS_CCPSR_LO_GB) |
583 | dev_err(dev, "gather boundary error\n"); | |
584 | if (v_lo & TALITOS_CCPSR_LO_GRL) | |
585 | dev_err(dev, "gather return/length error\n"); | |
586 | if (v_lo & TALITOS_CCPSR_LO_SB) | |
587 | dev_err(dev, "scatter boundary error\n"); | |
588 | if (v_lo & TALITOS_CCPSR_LO_SRL) | |
589 | dev_err(dev, "scatter return/length error\n"); | |
590 | ||
591 | flush_channel(dev, ch, error, reset_ch); | |
592 | ||
593 | if (reset_ch) { | |
594 | reset_channel(dev, ch); | |
595 | } else { | |
ad42d5fc | 596 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, |
9c4a7965 | 597 | TALITOS_CCCR_CONT); |
ad42d5fc KP |
598 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, 0); |
599 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & | |
9c4a7965 KP |
600 | TALITOS_CCCR_CONT) && --timeout) |
601 | cpu_relax(); | |
602 | if (timeout == 0) { | |
603 | dev_err(dev, "failed to restart channel %d\n", | |
604 | ch); | |
605 | reset_dev = 1; | |
606 | } | |
607 | } | |
608 | } | |
c3e337f8 | 609 | if (reset_dev || isr & ~TALITOS_ISR_4CHERR || isr_lo) { |
9c4a7965 KP |
610 | dev_err(dev, "done overflow, internal time out, or rngu error: " |
611 | "ISR 0x%08x_%08x\n", isr, isr_lo); | |
612 | ||
613 | /* purge request queues */ | |
614 | for (ch = 0; ch < priv->num_channels; ch++) | |
615 | flush_channel(dev, ch, -EIO, 1); | |
616 | ||
617 | /* reset and reinitialize the device */ | |
618 | init_device(dev); | |
619 | } | |
620 | } | |
621 | ||
c3e337f8 KP |
622 | #define DEF_TALITOS_INTERRUPT(name, ch_done_mask, ch_err_mask, tlet) \ |
623 | static irqreturn_t talitos_interrupt_##name(int irq, void *data) \ | |
624 | { \ | |
625 | struct device *dev = data; \ | |
626 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
627 | u32 isr, isr_lo; \ | |
511d63cb | 628 | unsigned long flags; \ |
c3e337f8 | 629 | \ |
511d63cb | 630 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
631 | isr = in_be32(priv->reg + TALITOS_ISR); \ |
632 | isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); \ | |
633 | /* Acknowledge interrupt */ \ | |
634 | out_be32(priv->reg + TALITOS_ICR, isr & (ch_done_mask | ch_err_mask)); \ | |
635 | out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); \ | |
636 | \ | |
511d63cb HG |
637 | if (unlikely(isr & ch_err_mask || isr_lo)) { \ |
638 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ | |
639 | talitos_error(dev, isr & ch_err_mask, isr_lo); \ | |
640 | } \ | |
641 | else { \ | |
c3e337f8 KP |
642 | if (likely(isr & ch_done_mask)) { \ |
643 | /* mask further done interrupts. */ \ | |
644 | clrbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ | |
645 | /* done_task will unmask done interrupts at exit */ \ | |
646 | tasklet_schedule(&priv->done_task[tlet]); \ | |
647 | } \ | |
511d63cb HG |
648 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
649 | } \ | |
c3e337f8 KP |
650 | \ |
651 | return (isr & (ch_done_mask | ch_err_mask) || isr_lo) ? IRQ_HANDLED : \ | |
652 | IRQ_NONE; \ | |
9c4a7965 | 653 | } |
c3e337f8 KP |
654 | DEF_TALITOS_INTERRUPT(4ch, TALITOS_ISR_4CHDONE, TALITOS_ISR_4CHERR, 0) |
655 | DEF_TALITOS_INTERRUPT(ch0_2, TALITOS_ISR_CH_0_2_DONE, TALITOS_ISR_CH_0_2_ERR, 0) | |
656 | DEF_TALITOS_INTERRUPT(ch1_3, TALITOS_ISR_CH_1_3_DONE, TALITOS_ISR_CH_1_3_ERR, 1) | |
9c4a7965 KP |
657 | |
658 | /* | |
659 | * hwrng | |
660 | */ | |
661 | static int talitos_rng_data_present(struct hwrng *rng, int wait) | |
662 | { | |
663 | struct device *dev = (struct device *)rng->priv; | |
664 | struct talitos_private *priv = dev_get_drvdata(dev); | |
665 | u32 ofl; | |
666 | int i; | |
667 | ||
668 | for (i = 0; i < 20; i++) { | |
669 | ofl = in_be32(priv->reg + TALITOS_RNGUSR_LO) & | |
670 | TALITOS_RNGUSR_LO_OFL; | |
671 | if (ofl || !wait) | |
672 | break; | |
673 | udelay(10); | |
674 | } | |
675 | ||
676 | return !!ofl; | |
677 | } | |
678 | ||
679 | static int talitos_rng_data_read(struct hwrng *rng, u32 *data) | |
680 | { | |
681 | struct device *dev = (struct device *)rng->priv; | |
682 | struct talitos_private *priv = dev_get_drvdata(dev); | |
683 | ||
684 | /* rng fifo requires 64-bit accesses */ | |
685 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO); | |
686 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO_LO); | |
687 | ||
688 | return sizeof(u32); | |
689 | } | |
690 | ||
691 | static int talitos_rng_init(struct hwrng *rng) | |
692 | { | |
693 | struct device *dev = (struct device *)rng->priv; | |
694 | struct talitos_private *priv = dev_get_drvdata(dev); | |
695 | unsigned int timeout = TALITOS_TIMEOUT; | |
696 | ||
697 | setbits32(priv->reg + TALITOS_RNGURCR_LO, TALITOS_RNGURCR_LO_SR); | |
698 | while (!(in_be32(priv->reg + TALITOS_RNGUSR_LO) & TALITOS_RNGUSR_LO_RD) | |
699 | && --timeout) | |
700 | cpu_relax(); | |
701 | if (timeout == 0) { | |
702 | dev_err(dev, "failed to reset rng hw\n"); | |
703 | return -ENODEV; | |
704 | } | |
705 | ||
706 | /* start generating */ | |
707 | setbits32(priv->reg + TALITOS_RNGUDSR_LO, 0); | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
712 | static int talitos_register_rng(struct device *dev) | |
713 | { | |
714 | struct talitos_private *priv = dev_get_drvdata(dev); | |
715 | ||
716 | priv->rng.name = dev_driver_string(dev), | |
717 | priv->rng.init = talitos_rng_init, | |
718 | priv->rng.data_present = talitos_rng_data_present, | |
719 | priv->rng.data_read = talitos_rng_data_read, | |
720 | priv->rng.priv = (unsigned long)dev; | |
721 | ||
722 | return hwrng_register(&priv->rng); | |
723 | } | |
724 | ||
725 | static void talitos_unregister_rng(struct device *dev) | |
726 | { | |
727 | struct talitos_private *priv = dev_get_drvdata(dev); | |
728 | ||
729 | hwrng_unregister(&priv->rng); | |
730 | } | |
731 | ||
732 | /* | |
733 | * crypto alg | |
734 | */ | |
735 | #define TALITOS_CRA_PRIORITY 3000 | |
736 | #define TALITOS_MAX_KEY_SIZE 64 | |
3952f17e | 737 | #define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */ |
70bcaca7 | 738 | |
497f2e6b | 739 | #define MD5_BLOCK_SIZE 64 |
9c4a7965 KP |
740 | |
741 | struct talitos_ctx { | |
742 | struct device *dev; | |
5228f0f7 | 743 | int ch; |
9c4a7965 KP |
744 | __be32 desc_hdr_template; |
745 | u8 key[TALITOS_MAX_KEY_SIZE]; | |
70bcaca7 | 746 | u8 iv[TALITOS_MAX_IV_LENGTH]; |
9c4a7965 KP |
747 | unsigned int keylen; |
748 | unsigned int enckeylen; | |
749 | unsigned int authkeylen; | |
750 | unsigned int authsize; | |
751 | }; | |
752 | ||
497f2e6b LN |
753 | #define HASH_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE |
754 | #define TALITOS_MDEU_MAX_CONTEXT_SIZE TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512 | |
755 | ||
756 | struct talitos_ahash_req_ctx { | |
60f208d7 | 757 | u32 hw_context[TALITOS_MDEU_MAX_CONTEXT_SIZE / sizeof(u32)]; |
497f2e6b LN |
758 | unsigned int hw_context_size; |
759 | u8 buf[HASH_MAX_BLOCK_SIZE]; | |
760 | u8 bufnext[HASH_MAX_BLOCK_SIZE]; | |
60f208d7 | 761 | unsigned int swinit; |
497f2e6b LN |
762 | unsigned int first; |
763 | unsigned int last; | |
764 | unsigned int to_hash_later; | |
5e833bc4 | 765 | u64 nbuf; |
497f2e6b LN |
766 | struct scatterlist bufsl[2]; |
767 | struct scatterlist *psrc; | |
768 | }; | |
769 | ||
56af8cd4 LN |
770 | static int aead_setauthsize(struct crypto_aead *authenc, |
771 | unsigned int authsize) | |
9c4a7965 KP |
772 | { |
773 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
774 | ||
775 | ctx->authsize = authsize; | |
776 | ||
777 | return 0; | |
778 | } | |
779 | ||
56af8cd4 LN |
780 | static int aead_setkey(struct crypto_aead *authenc, |
781 | const u8 *key, unsigned int keylen) | |
9c4a7965 KP |
782 | { |
783 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
784 | struct rtattr *rta = (void *)key; | |
785 | struct crypto_authenc_key_param *param; | |
786 | unsigned int authkeylen; | |
787 | unsigned int enckeylen; | |
788 | ||
789 | if (!RTA_OK(rta, keylen)) | |
790 | goto badkey; | |
791 | ||
792 | if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) | |
793 | goto badkey; | |
794 | ||
795 | if (RTA_PAYLOAD(rta) < sizeof(*param)) | |
796 | goto badkey; | |
797 | ||
798 | param = RTA_DATA(rta); | |
799 | enckeylen = be32_to_cpu(param->enckeylen); | |
800 | ||
801 | key += RTA_ALIGN(rta->rta_len); | |
802 | keylen -= RTA_ALIGN(rta->rta_len); | |
803 | ||
804 | if (keylen < enckeylen) | |
805 | goto badkey; | |
806 | ||
807 | authkeylen = keylen - enckeylen; | |
808 | ||
809 | if (keylen > TALITOS_MAX_KEY_SIZE) | |
810 | goto badkey; | |
811 | ||
812 | memcpy(&ctx->key, key, keylen); | |
813 | ||
814 | ctx->keylen = keylen; | |
815 | ctx->enckeylen = enckeylen; | |
816 | ctx->authkeylen = authkeylen; | |
817 | ||
818 | return 0; | |
819 | ||
820 | badkey: | |
821 | crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
822 | return -EINVAL; | |
823 | } | |
824 | ||
825 | /* | |
56af8cd4 | 826 | * talitos_edesc - s/w-extended descriptor |
9c4a7965 KP |
827 | * @src_nents: number of segments in input scatterlist |
828 | * @dst_nents: number of segments in output scatterlist | |
829 | * @dma_len: length of dma mapped link_tbl space | |
830 | * @dma_link_tbl: bus physical address of link_tbl | |
831 | * @desc: h/w descriptor | |
832 | * @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1) | |
833 | * | |
834 | * if decrypting (with authcheck), or either one of src_nents or dst_nents | |
835 | * is greater than 1, an integrity check value is concatenated to the end | |
836 | * of link_tbl data | |
837 | */ | |
56af8cd4 | 838 | struct talitos_edesc { |
9c4a7965 KP |
839 | int src_nents; |
840 | int dst_nents; | |
4de9d0b5 LN |
841 | int src_is_chained; |
842 | int dst_is_chained; | |
9c4a7965 KP |
843 | int dma_len; |
844 | dma_addr_t dma_link_tbl; | |
845 | struct talitos_desc desc; | |
846 | struct talitos_ptr link_tbl[0]; | |
847 | }; | |
848 | ||
4de9d0b5 LN |
849 | static int talitos_map_sg(struct device *dev, struct scatterlist *sg, |
850 | unsigned int nents, enum dma_data_direction dir, | |
851 | int chained) | |
852 | { | |
853 | if (unlikely(chained)) | |
854 | while (sg) { | |
855 | dma_map_sg(dev, sg, 1, dir); | |
856 | sg = scatterwalk_sg_next(sg); | |
857 | } | |
858 | else | |
859 | dma_map_sg(dev, sg, nents, dir); | |
860 | return nents; | |
861 | } | |
862 | ||
863 | static void talitos_unmap_sg_chain(struct device *dev, struct scatterlist *sg, | |
864 | enum dma_data_direction dir) | |
865 | { | |
866 | while (sg) { | |
867 | dma_unmap_sg(dev, sg, 1, dir); | |
868 | sg = scatterwalk_sg_next(sg); | |
869 | } | |
870 | } | |
871 | ||
872 | static void talitos_sg_unmap(struct device *dev, | |
873 | struct talitos_edesc *edesc, | |
874 | struct scatterlist *src, | |
875 | struct scatterlist *dst) | |
876 | { | |
877 | unsigned int src_nents = edesc->src_nents ? : 1; | |
878 | unsigned int dst_nents = edesc->dst_nents ? : 1; | |
879 | ||
880 | if (src != dst) { | |
881 | if (edesc->src_is_chained) | |
882 | talitos_unmap_sg_chain(dev, src, DMA_TO_DEVICE); | |
883 | else | |
884 | dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE); | |
885 | ||
497f2e6b LN |
886 | if (dst) { |
887 | if (edesc->dst_is_chained) | |
888 | talitos_unmap_sg_chain(dev, dst, | |
889 | DMA_FROM_DEVICE); | |
890 | else | |
891 | dma_unmap_sg(dev, dst, dst_nents, | |
892 | DMA_FROM_DEVICE); | |
893 | } | |
4de9d0b5 LN |
894 | } else |
895 | if (edesc->src_is_chained) | |
896 | talitos_unmap_sg_chain(dev, src, DMA_BIDIRECTIONAL); | |
897 | else | |
898 | dma_unmap_sg(dev, src, src_nents, DMA_BIDIRECTIONAL); | |
899 | } | |
900 | ||
9c4a7965 | 901 | static void ipsec_esp_unmap(struct device *dev, |
56af8cd4 | 902 | struct talitos_edesc *edesc, |
9c4a7965 KP |
903 | struct aead_request *areq) |
904 | { | |
905 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[6], DMA_FROM_DEVICE); | |
906 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[3], DMA_TO_DEVICE); | |
907 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE); | |
908 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[0], DMA_TO_DEVICE); | |
909 | ||
910 | dma_unmap_sg(dev, areq->assoc, 1, DMA_TO_DEVICE); | |
911 | ||
4de9d0b5 | 912 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); |
9c4a7965 KP |
913 | |
914 | if (edesc->dma_len) | |
915 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
916 | DMA_BIDIRECTIONAL); | |
917 | } | |
918 | ||
919 | /* | |
920 | * ipsec_esp descriptor callbacks | |
921 | */ | |
922 | static void ipsec_esp_encrypt_done(struct device *dev, | |
923 | struct talitos_desc *desc, void *context, | |
924 | int err) | |
925 | { | |
926 | struct aead_request *areq = context; | |
9c4a7965 KP |
927 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); |
928 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 929 | struct talitos_edesc *edesc; |
9c4a7965 KP |
930 | struct scatterlist *sg; |
931 | void *icvdata; | |
932 | ||
19bbbc63 KP |
933 | edesc = container_of(desc, struct talitos_edesc, desc); |
934 | ||
9c4a7965 KP |
935 | ipsec_esp_unmap(dev, edesc, areq); |
936 | ||
937 | /* copy the generated ICV to dst */ | |
938 | if (edesc->dma_len) { | |
939 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
f3c85bc1 | 940 | edesc->dst_nents + 2]; |
9c4a7965 KP |
941 | sg = sg_last(areq->dst, edesc->dst_nents); |
942 | memcpy((char *)sg_virt(sg) + sg->length - ctx->authsize, | |
943 | icvdata, ctx->authsize); | |
944 | } | |
945 | ||
946 | kfree(edesc); | |
947 | ||
948 | aead_request_complete(areq, err); | |
949 | } | |
950 | ||
fe5720e2 | 951 | static void ipsec_esp_decrypt_swauth_done(struct device *dev, |
e938e465 KP |
952 | struct talitos_desc *desc, |
953 | void *context, int err) | |
9c4a7965 KP |
954 | { |
955 | struct aead_request *req = context; | |
9c4a7965 KP |
956 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
957 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 958 | struct talitos_edesc *edesc; |
9c4a7965 KP |
959 | struct scatterlist *sg; |
960 | void *icvdata; | |
961 | ||
19bbbc63 KP |
962 | edesc = container_of(desc, struct talitos_edesc, desc); |
963 | ||
9c4a7965 KP |
964 | ipsec_esp_unmap(dev, edesc, req); |
965 | ||
966 | if (!err) { | |
967 | /* auth check */ | |
968 | if (edesc->dma_len) | |
969 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
f3c85bc1 | 970 | edesc->dst_nents + 2]; |
9c4a7965 KP |
971 | else |
972 | icvdata = &edesc->link_tbl[0]; | |
973 | ||
974 | sg = sg_last(req->dst, edesc->dst_nents ? : 1); | |
975 | err = memcmp(icvdata, (char *)sg_virt(sg) + sg->length - | |
976 | ctx->authsize, ctx->authsize) ? -EBADMSG : 0; | |
977 | } | |
978 | ||
979 | kfree(edesc); | |
980 | ||
981 | aead_request_complete(req, err); | |
982 | } | |
983 | ||
fe5720e2 | 984 | static void ipsec_esp_decrypt_hwauth_done(struct device *dev, |
e938e465 KP |
985 | struct talitos_desc *desc, |
986 | void *context, int err) | |
fe5720e2 KP |
987 | { |
988 | struct aead_request *req = context; | |
19bbbc63 KP |
989 | struct talitos_edesc *edesc; |
990 | ||
991 | edesc = container_of(desc, struct talitos_edesc, desc); | |
fe5720e2 KP |
992 | |
993 | ipsec_esp_unmap(dev, edesc, req); | |
994 | ||
995 | /* check ICV auth status */ | |
e938e465 KP |
996 | if (!err && ((desc->hdr_lo & DESC_HDR_LO_ICCR1_MASK) != |
997 | DESC_HDR_LO_ICCR1_PASS)) | |
998 | err = -EBADMSG; | |
fe5720e2 KP |
999 | |
1000 | kfree(edesc); | |
1001 | ||
1002 | aead_request_complete(req, err); | |
1003 | } | |
1004 | ||
9c4a7965 KP |
1005 | /* |
1006 | * convert scatterlist to SEC h/w link table format | |
1007 | * stop at cryptlen bytes | |
1008 | */ | |
70bcaca7 | 1009 | static int sg_to_link_tbl(struct scatterlist *sg, int sg_count, |
9c4a7965 KP |
1010 | int cryptlen, struct talitos_ptr *link_tbl_ptr) |
1011 | { | |
70bcaca7 LN |
1012 | int n_sg = sg_count; |
1013 | ||
1014 | while (n_sg--) { | |
81eb024c | 1015 | to_talitos_ptr(link_tbl_ptr, sg_dma_address(sg)); |
9c4a7965 KP |
1016 | link_tbl_ptr->len = cpu_to_be16(sg_dma_len(sg)); |
1017 | link_tbl_ptr->j_extent = 0; | |
1018 | link_tbl_ptr++; | |
1019 | cryptlen -= sg_dma_len(sg); | |
4de9d0b5 | 1020 | sg = scatterwalk_sg_next(sg); |
9c4a7965 KP |
1021 | } |
1022 | ||
70bcaca7 | 1023 | /* adjust (decrease) last one (or two) entry's len to cryptlen */ |
9c4a7965 | 1024 | link_tbl_ptr--; |
c0e741d4 | 1025 | while (be16_to_cpu(link_tbl_ptr->len) <= (-cryptlen)) { |
70bcaca7 LN |
1026 | /* Empty this entry, and move to previous one */ |
1027 | cryptlen += be16_to_cpu(link_tbl_ptr->len); | |
1028 | link_tbl_ptr->len = 0; | |
1029 | sg_count--; | |
1030 | link_tbl_ptr--; | |
1031 | } | |
9c4a7965 KP |
1032 | link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len) |
1033 | + cryptlen); | |
1034 | ||
1035 | /* tag end of link table */ | |
1036 | link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
70bcaca7 LN |
1037 | |
1038 | return sg_count; | |
9c4a7965 KP |
1039 | } |
1040 | ||
1041 | /* | |
1042 | * fill in and submit ipsec_esp descriptor | |
1043 | */ | |
56af8cd4 | 1044 | static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, |
9c4a7965 KP |
1045 | u8 *giv, u64 seq, |
1046 | void (*callback) (struct device *dev, | |
1047 | struct talitos_desc *desc, | |
1048 | void *context, int error)) | |
1049 | { | |
1050 | struct crypto_aead *aead = crypto_aead_reqtfm(areq); | |
1051 | struct talitos_ctx *ctx = crypto_aead_ctx(aead); | |
1052 | struct device *dev = ctx->dev; | |
1053 | struct talitos_desc *desc = &edesc->desc; | |
1054 | unsigned int cryptlen = areq->cryptlen; | |
1055 | unsigned int authsize = ctx->authsize; | |
e41256f1 | 1056 | unsigned int ivsize = crypto_aead_ivsize(aead); |
fa86a267 | 1057 | int sg_count, ret; |
fe5720e2 | 1058 | int sg_link_tbl_len; |
9c4a7965 KP |
1059 | |
1060 | /* hmac key */ | |
1061 | map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key, | |
1062 | 0, DMA_TO_DEVICE); | |
1063 | /* hmac data */ | |
e41256f1 KP |
1064 | map_single_talitos_ptr(dev, &desc->ptr[1], areq->assoclen + ivsize, |
1065 | sg_virt(areq->assoc), 0, DMA_TO_DEVICE); | |
9c4a7965 | 1066 | /* cipher iv */ |
9c4a7965 KP |
1067 | map_single_talitos_ptr(dev, &desc->ptr[2], ivsize, giv ?: areq->iv, 0, |
1068 | DMA_TO_DEVICE); | |
1069 | ||
1070 | /* cipher key */ | |
1071 | map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen, | |
1072 | (char *)&ctx->key + ctx->authkeylen, 0, | |
1073 | DMA_TO_DEVICE); | |
1074 | ||
1075 | /* | |
1076 | * cipher in | |
1077 | * map and adjust cipher len to aead request cryptlen. | |
1078 | * extent is bytes of HMAC postpended to ciphertext, | |
1079 | * typically 12 for ipsec | |
1080 | */ | |
1081 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
1082 | desc->ptr[4].j_extent = authsize; | |
1083 | ||
e938e465 KP |
1084 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, |
1085 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
1086 | : DMA_TO_DEVICE, | |
4de9d0b5 | 1087 | edesc->src_is_chained); |
9c4a7965 KP |
1088 | |
1089 | if (sg_count == 1) { | |
81eb024c | 1090 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->src)); |
9c4a7965 | 1091 | } else { |
fe5720e2 KP |
1092 | sg_link_tbl_len = cryptlen; |
1093 | ||
962a9c99 | 1094 | if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV) |
fe5720e2 | 1095 | sg_link_tbl_len = cryptlen + authsize; |
e938e465 | 1096 | |
fe5720e2 | 1097 | sg_count = sg_to_link_tbl(areq->src, sg_count, sg_link_tbl_len, |
70bcaca7 LN |
1098 | &edesc->link_tbl[0]); |
1099 | if (sg_count > 1) { | |
1100 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
81eb024c | 1101 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl); |
e938e465 KP |
1102 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
1103 | edesc->dma_len, | |
1104 | DMA_BIDIRECTIONAL); | |
70bcaca7 LN |
1105 | } else { |
1106 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
1107 | to_talitos_ptr(&desc->ptr[4], |
1108 | sg_dma_address(areq->src)); | |
70bcaca7 | 1109 | } |
9c4a7965 KP |
1110 | } |
1111 | ||
1112 | /* cipher out */ | |
1113 | desc->ptr[5].len = cpu_to_be16(cryptlen); | |
1114 | desc->ptr[5].j_extent = authsize; | |
1115 | ||
e938e465 | 1116 | if (areq->src != areq->dst) |
4de9d0b5 LN |
1117 | sg_count = talitos_map_sg(dev, areq->dst, |
1118 | edesc->dst_nents ? : 1, | |
1119 | DMA_FROM_DEVICE, | |
1120 | edesc->dst_is_chained); | |
9c4a7965 KP |
1121 | |
1122 | if (sg_count == 1) { | |
81eb024c | 1123 | to_talitos_ptr(&desc->ptr[5], sg_dma_address(areq->dst)); |
9c4a7965 KP |
1124 | } else { |
1125 | struct talitos_ptr *link_tbl_ptr = | |
f3c85bc1 | 1126 | &edesc->link_tbl[edesc->src_nents + 1]; |
9c4a7965 | 1127 | |
81eb024c KP |
1128 | to_talitos_ptr(&desc->ptr[5], edesc->dma_link_tbl + |
1129 | (edesc->src_nents + 1) * | |
1130 | sizeof(struct talitos_ptr)); | |
fe5720e2 KP |
1131 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
1132 | link_tbl_ptr); | |
1133 | ||
f3c85bc1 | 1134 | /* Add an entry to the link table for ICV data */ |
9c4a7965 | 1135 | link_tbl_ptr += sg_count - 1; |
9c4a7965 | 1136 | link_tbl_ptr->j_extent = 0; |
f3c85bc1 | 1137 | sg_count++; |
9c4a7965 KP |
1138 | link_tbl_ptr++; |
1139 | link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
1140 | link_tbl_ptr->len = cpu_to_be16(authsize); | |
1141 | ||
1142 | /* icv data follows link tables */ | |
81eb024c KP |
1143 | to_talitos_ptr(link_tbl_ptr, edesc->dma_link_tbl + |
1144 | (edesc->src_nents + edesc->dst_nents + 2) * | |
1145 | sizeof(struct talitos_ptr)); | |
9c4a7965 KP |
1146 | desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP; |
1147 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1148 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1149 | } | |
1150 | ||
1151 | /* iv out */ | |
1152 | map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0, | |
1153 | DMA_FROM_DEVICE); | |
1154 | ||
5228f0f7 | 1155 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
fa86a267 KP |
1156 | if (ret != -EINPROGRESS) { |
1157 | ipsec_esp_unmap(dev, edesc, areq); | |
1158 | kfree(edesc); | |
1159 | } | |
1160 | return ret; | |
9c4a7965 KP |
1161 | } |
1162 | ||
9c4a7965 KP |
1163 | /* |
1164 | * derive number of elements in scatterlist | |
1165 | */ | |
4de9d0b5 | 1166 | static int sg_count(struct scatterlist *sg_list, int nbytes, int *chained) |
9c4a7965 KP |
1167 | { |
1168 | struct scatterlist *sg = sg_list; | |
1169 | int sg_nents = 0; | |
1170 | ||
4de9d0b5 LN |
1171 | *chained = 0; |
1172 | while (nbytes > 0) { | |
9c4a7965 KP |
1173 | sg_nents++; |
1174 | nbytes -= sg->length; | |
4de9d0b5 LN |
1175 | if (!sg_is_last(sg) && (sg + 1)->length == 0) |
1176 | *chained = 1; | |
1177 | sg = scatterwalk_sg_next(sg); | |
9c4a7965 KP |
1178 | } |
1179 | ||
1180 | return sg_nents; | |
1181 | } | |
1182 | ||
497f2e6b LN |
1183 | /** |
1184 | * sg_copy_end_to_buffer - Copy end data from SG list to a linear buffer | |
1185 | * @sgl: The SG list | |
1186 | * @nents: Number of SG entries | |
1187 | * @buf: Where to copy to | |
1188 | * @buflen: The number of bytes to copy | |
1189 | * @skip: The number of bytes to skip before copying. | |
1190 | * Note: skip + buflen should equal SG total size. | |
1191 | * | |
1192 | * Returns the number of copied bytes. | |
1193 | * | |
1194 | **/ | |
1195 | static size_t sg_copy_end_to_buffer(struct scatterlist *sgl, unsigned int nents, | |
1196 | void *buf, size_t buflen, unsigned int skip) | |
1197 | { | |
1198 | unsigned int offset = 0; | |
1199 | unsigned int boffset = 0; | |
1200 | struct sg_mapping_iter miter; | |
1201 | unsigned long flags; | |
1202 | unsigned int sg_flags = SG_MITER_ATOMIC; | |
1203 | size_t total_buffer = buflen + skip; | |
1204 | ||
1205 | sg_flags |= SG_MITER_FROM_SG; | |
1206 | ||
1207 | sg_miter_start(&miter, sgl, nents, sg_flags); | |
1208 | ||
1209 | local_irq_save(flags); | |
1210 | ||
1211 | while (sg_miter_next(&miter) && offset < total_buffer) { | |
1212 | unsigned int len; | |
1213 | unsigned int ignore; | |
1214 | ||
1215 | if ((offset + miter.length) > skip) { | |
1216 | if (offset < skip) { | |
1217 | /* Copy part of this segment */ | |
1218 | ignore = skip - offset; | |
1219 | len = miter.length - ignore; | |
7260042b LN |
1220 | if (boffset + len > buflen) |
1221 | len = buflen - boffset; | |
497f2e6b LN |
1222 | memcpy(buf + boffset, miter.addr + ignore, len); |
1223 | } else { | |
7260042b | 1224 | /* Copy all of this segment (up to buflen) */ |
497f2e6b | 1225 | len = miter.length; |
7260042b LN |
1226 | if (boffset + len > buflen) |
1227 | len = buflen - boffset; | |
497f2e6b LN |
1228 | memcpy(buf + boffset, miter.addr, len); |
1229 | } | |
1230 | boffset += len; | |
1231 | } | |
1232 | offset += miter.length; | |
1233 | } | |
1234 | ||
1235 | sg_miter_stop(&miter); | |
1236 | ||
1237 | local_irq_restore(flags); | |
1238 | return boffset; | |
1239 | } | |
1240 | ||
9c4a7965 | 1241 | /* |
56af8cd4 | 1242 | * allocate and map the extended descriptor |
9c4a7965 | 1243 | */ |
4de9d0b5 LN |
1244 | static struct talitos_edesc *talitos_edesc_alloc(struct device *dev, |
1245 | struct scatterlist *src, | |
1246 | struct scatterlist *dst, | |
497f2e6b | 1247 | int hash_result, |
4de9d0b5 LN |
1248 | unsigned int cryptlen, |
1249 | unsigned int authsize, | |
1250 | int icv_stashing, | |
1251 | u32 cryptoflags) | |
9c4a7965 | 1252 | { |
56af8cd4 | 1253 | struct talitos_edesc *edesc; |
9c4a7965 | 1254 | int src_nents, dst_nents, alloc_len, dma_len; |
4de9d0b5 LN |
1255 | int src_chained, dst_chained = 0; |
1256 | gfp_t flags = cryptoflags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : | |
586725f8 | 1257 | GFP_ATOMIC; |
9c4a7965 | 1258 | |
4de9d0b5 LN |
1259 | if (cryptlen + authsize > TALITOS_MAX_DATA_LEN) { |
1260 | dev_err(dev, "length exceeds h/w max limit\n"); | |
9c4a7965 KP |
1261 | return ERR_PTR(-EINVAL); |
1262 | } | |
1263 | ||
4de9d0b5 | 1264 | src_nents = sg_count(src, cryptlen + authsize, &src_chained); |
9c4a7965 KP |
1265 | src_nents = (src_nents == 1) ? 0 : src_nents; |
1266 | ||
497f2e6b LN |
1267 | if (hash_result) { |
1268 | dst_nents = 0; | |
9c4a7965 | 1269 | } else { |
497f2e6b LN |
1270 | if (dst == src) { |
1271 | dst_nents = src_nents; | |
1272 | } else { | |
1273 | dst_nents = sg_count(dst, cryptlen + authsize, | |
1274 | &dst_chained); | |
1275 | dst_nents = (dst_nents == 1) ? 0 : dst_nents; | |
1276 | } | |
9c4a7965 KP |
1277 | } |
1278 | ||
1279 | /* | |
1280 | * allocate space for base edesc plus the link tables, | |
f3c85bc1 | 1281 | * allowing for two separate entries for ICV and generated ICV (+ 2), |
9c4a7965 KP |
1282 | * and the ICV data itself |
1283 | */ | |
56af8cd4 | 1284 | alloc_len = sizeof(struct talitos_edesc); |
9c4a7965 | 1285 | if (src_nents || dst_nents) { |
f3c85bc1 | 1286 | dma_len = (src_nents + dst_nents + 2) * |
4de9d0b5 | 1287 | sizeof(struct talitos_ptr) + authsize; |
9c4a7965 KP |
1288 | alloc_len += dma_len; |
1289 | } else { | |
1290 | dma_len = 0; | |
4de9d0b5 | 1291 | alloc_len += icv_stashing ? authsize : 0; |
9c4a7965 KP |
1292 | } |
1293 | ||
586725f8 | 1294 | edesc = kmalloc(alloc_len, GFP_DMA | flags); |
9c4a7965 | 1295 | if (!edesc) { |
4de9d0b5 | 1296 | dev_err(dev, "could not allocate edescriptor\n"); |
9c4a7965 KP |
1297 | return ERR_PTR(-ENOMEM); |
1298 | } | |
1299 | ||
1300 | edesc->src_nents = src_nents; | |
1301 | edesc->dst_nents = dst_nents; | |
4de9d0b5 LN |
1302 | edesc->src_is_chained = src_chained; |
1303 | edesc->dst_is_chained = dst_chained; | |
9c4a7965 | 1304 | edesc->dma_len = dma_len; |
497f2e6b LN |
1305 | if (dma_len) |
1306 | edesc->dma_link_tbl = dma_map_single(dev, &edesc->link_tbl[0], | |
1307 | edesc->dma_len, | |
1308 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
1309 | |
1310 | return edesc; | |
1311 | } | |
1312 | ||
4de9d0b5 LN |
1313 | static struct talitos_edesc *aead_edesc_alloc(struct aead_request *areq, |
1314 | int icv_stashing) | |
1315 | { | |
1316 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1317 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
1318 | ||
497f2e6b | 1319 | return talitos_edesc_alloc(ctx->dev, areq->src, areq->dst, 0, |
4de9d0b5 LN |
1320 | areq->cryptlen, ctx->authsize, icv_stashing, |
1321 | areq->base.flags); | |
1322 | } | |
1323 | ||
56af8cd4 | 1324 | static int aead_encrypt(struct aead_request *req) |
9c4a7965 KP |
1325 | { |
1326 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
1327 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1328 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1329 | |
1330 | /* allocate extended descriptor */ | |
4de9d0b5 | 1331 | edesc = aead_edesc_alloc(req, 0); |
9c4a7965 KP |
1332 | if (IS_ERR(edesc)) |
1333 | return PTR_ERR(edesc); | |
1334 | ||
1335 | /* set encrypt */ | |
70bcaca7 | 1336 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 KP |
1337 | |
1338 | return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_encrypt_done); | |
1339 | } | |
1340 | ||
56af8cd4 | 1341 | static int aead_decrypt(struct aead_request *req) |
9c4a7965 KP |
1342 | { |
1343 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
1344 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
1345 | unsigned int authsize = ctx->authsize; | |
fe5720e2 | 1346 | struct talitos_private *priv = dev_get_drvdata(ctx->dev); |
56af8cd4 | 1347 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1348 | struct scatterlist *sg; |
1349 | void *icvdata; | |
1350 | ||
1351 | req->cryptlen -= authsize; | |
1352 | ||
1353 | /* allocate extended descriptor */ | |
4de9d0b5 | 1354 | edesc = aead_edesc_alloc(req, 1); |
9c4a7965 KP |
1355 | if (IS_ERR(edesc)) |
1356 | return PTR_ERR(edesc); | |
1357 | ||
fe5720e2 | 1358 | if ((priv->features & TALITOS_FTR_HW_AUTH_CHECK) && |
e938e465 KP |
1359 | ((!edesc->src_nents && !edesc->dst_nents) || |
1360 | priv->features & TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT)) { | |
9c4a7965 | 1361 | |
fe5720e2 | 1362 | /* decrypt and check the ICV */ |
e938e465 KP |
1363 | edesc->desc.hdr = ctx->desc_hdr_template | |
1364 | DESC_HDR_DIR_INBOUND | | |
fe5720e2 | 1365 | DESC_HDR_MODE1_MDEU_CICV; |
9c4a7965 | 1366 | |
fe5720e2 KP |
1367 | /* reset integrity check result bits */ |
1368 | edesc->desc.hdr_lo = 0; | |
9c4a7965 | 1369 | |
e938e465 KP |
1370 | return ipsec_esp(edesc, req, NULL, 0, |
1371 | ipsec_esp_decrypt_hwauth_done); | |
fe5720e2 | 1372 | |
e938e465 | 1373 | } |
fe5720e2 | 1374 | |
e938e465 KP |
1375 | /* Have to check the ICV with software */ |
1376 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
fe5720e2 | 1377 | |
e938e465 KP |
1378 | /* stash incoming ICV for later cmp with ICV generated by the h/w */ |
1379 | if (edesc->dma_len) | |
1380 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
1381 | edesc->dst_nents + 2]; | |
1382 | else | |
1383 | icvdata = &edesc->link_tbl[0]; | |
fe5720e2 | 1384 | |
e938e465 | 1385 | sg = sg_last(req->src, edesc->src_nents ? : 1); |
fe5720e2 | 1386 | |
e938e465 KP |
1387 | memcpy(icvdata, (char *)sg_virt(sg) + sg->length - ctx->authsize, |
1388 | ctx->authsize); | |
fe5720e2 | 1389 | |
e938e465 | 1390 | return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_decrypt_swauth_done); |
9c4a7965 KP |
1391 | } |
1392 | ||
56af8cd4 | 1393 | static int aead_givencrypt(struct aead_givcrypt_request *req) |
9c4a7965 KP |
1394 | { |
1395 | struct aead_request *areq = &req->areq; | |
1396 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1397 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1398 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1399 | |
1400 | /* allocate extended descriptor */ | |
4de9d0b5 | 1401 | edesc = aead_edesc_alloc(areq, 0); |
9c4a7965 KP |
1402 | if (IS_ERR(edesc)) |
1403 | return PTR_ERR(edesc); | |
1404 | ||
1405 | /* set encrypt */ | |
70bcaca7 | 1406 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 KP |
1407 | |
1408 | memcpy(req->giv, ctx->iv, crypto_aead_ivsize(authenc)); | |
ba95487d KP |
1409 | /* avoid consecutive packets going out with same IV */ |
1410 | *(__be64 *)req->giv ^= cpu_to_be64(req->seq); | |
9c4a7965 KP |
1411 | |
1412 | return ipsec_esp(edesc, areq, req->giv, req->seq, | |
1413 | ipsec_esp_encrypt_done); | |
1414 | } | |
1415 | ||
4de9d0b5 LN |
1416 | static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, |
1417 | const u8 *key, unsigned int keylen) | |
1418 | { | |
1419 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
4de9d0b5 LN |
1420 | |
1421 | memcpy(&ctx->key, key, keylen); | |
1422 | ctx->keylen = keylen; | |
1423 | ||
1424 | return 0; | |
4de9d0b5 LN |
1425 | } |
1426 | ||
1427 | static void common_nonsnoop_unmap(struct device *dev, | |
1428 | struct talitos_edesc *edesc, | |
1429 | struct ablkcipher_request *areq) | |
1430 | { | |
1431 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1432 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE); | |
1433 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], DMA_TO_DEVICE); | |
1434 | ||
1435 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); | |
1436 | ||
1437 | if (edesc->dma_len) | |
1438 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1439 | DMA_BIDIRECTIONAL); | |
1440 | } | |
1441 | ||
1442 | static void ablkcipher_done(struct device *dev, | |
1443 | struct talitos_desc *desc, void *context, | |
1444 | int err) | |
1445 | { | |
1446 | struct ablkcipher_request *areq = context; | |
19bbbc63 KP |
1447 | struct talitos_edesc *edesc; |
1448 | ||
1449 | edesc = container_of(desc, struct talitos_edesc, desc); | |
4de9d0b5 LN |
1450 | |
1451 | common_nonsnoop_unmap(dev, edesc, areq); | |
1452 | ||
1453 | kfree(edesc); | |
1454 | ||
1455 | areq->base.complete(&areq->base, err); | |
1456 | } | |
1457 | ||
1458 | static int common_nonsnoop(struct talitos_edesc *edesc, | |
1459 | struct ablkcipher_request *areq, | |
4de9d0b5 LN |
1460 | void (*callback) (struct device *dev, |
1461 | struct talitos_desc *desc, | |
1462 | void *context, int error)) | |
1463 | { | |
1464 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1465 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1466 | struct device *dev = ctx->dev; | |
1467 | struct talitos_desc *desc = &edesc->desc; | |
1468 | unsigned int cryptlen = areq->nbytes; | |
1469 | unsigned int ivsize; | |
1470 | int sg_count, ret; | |
1471 | ||
1472 | /* first DWORD empty */ | |
1473 | desc->ptr[0].len = 0; | |
81eb024c | 1474 | to_talitos_ptr(&desc->ptr[0], 0); |
4de9d0b5 LN |
1475 | desc->ptr[0].j_extent = 0; |
1476 | ||
1477 | /* cipher iv */ | |
1478 | ivsize = crypto_ablkcipher_ivsize(cipher); | |
febec542 | 1479 | map_single_talitos_ptr(dev, &desc->ptr[1], ivsize, areq->info, 0, |
4de9d0b5 LN |
1480 | DMA_TO_DEVICE); |
1481 | ||
1482 | /* cipher key */ | |
1483 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1484 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1485 | ||
1486 | /* | |
1487 | * cipher in | |
1488 | */ | |
1489 | desc->ptr[3].len = cpu_to_be16(cryptlen); | |
1490 | desc->ptr[3].j_extent = 0; | |
1491 | ||
1492 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, | |
1493 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
1494 | : DMA_TO_DEVICE, | |
1495 | edesc->src_is_chained); | |
1496 | ||
1497 | if (sg_count == 1) { | |
81eb024c | 1498 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(areq->src)); |
4de9d0b5 LN |
1499 | } else { |
1500 | sg_count = sg_to_link_tbl(areq->src, sg_count, cryptlen, | |
1501 | &edesc->link_tbl[0]); | |
1502 | if (sg_count > 1) { | |
81eb024c | 1503 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); |
4de9d0b5 | 1504 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; |
e938e465 KP |
1505 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
1506 | edesc->dma_len, | |
1507 | DMA_BIDIRECTIONAL); | |
4de9d0b5 LN |
1508 | } else { |
1509 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
1510 | to_talitos_ptr(&desc->ptr[3], |
1511 | sg_dma_address(areq->src)); | |
4de9d0b5 LN |
1512 | } |
1513 | } | |
1514 | ||
1515 | /* cipher out */ | |
1516 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
1517 | desc->ptr[4].j_extent = 0; | |
1518 | ||
1519 | if (areq->src != areq->dst) | |
1520 | sg_count = talitos_map_sg(dev, areq->dst, | |
1521 | edesc->dst_nents ? : 1, | |
1522 | DMA_FROM_DEVICE, | |
1523 | edesc->dst_is_chained); | |
1524 | ||
1525 | if (sg_count == 1) { | |
81eb024c | 1526 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->dst)); |
4de9d0b5 LN |
1527 | } else { |
1528 | struct talitos_ptr *link_tbl_ptr = | |
1529 | &edesc->link_tbl[edesc->src_nents + 1]; | |
1530 | ||
81eb024c KP |
1531 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl + |
1532 | (edesc->src_nents + 1) * | |
1533 | sizeof(struct talitos_ptr)); | |
4de9d0b5 | 1534 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; |
4de9d0b5 LN |
1535 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
1536 | link_tbl_ptr); | |
1537 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1538 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1539 | } | |
1540 | ||
1541 | /* iv out */ | |
1542 | map_single_talitos_ptr(dev, &desc->ptr[5], ivsize, ctx->iv, 0, | |
1543 | DMA_FROM_DEVICE); | |
1544 | ||
1545 | /* last DWORD empty */ | |
1546 | desc->ptr[6].len = 0; | |
81eb024c | 1547 | to_talitos_ptr(&desc->ptr[6], 0); |
4de9d0b5 LN |
1548 | desc->ptr[6].j_extent = 0; |
1549 | ||
5228f0f7 | 1550 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
4de9d0b5 LN |
1551 | if (ret != -EINPROGRESS) { |
1552 | common_nonsnoop_unmap(dev, edesc, areq); | |
1553 | kfree(edesc); | |
1554 | } | |
1555 | return ret; | |
1556 | } | |
1557 | ||
e938e465 KP |
1558 | static struct talitos_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request * |
1559 | areq) | |
4de9d0b5 LN |
1560 | { |
1561 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1562 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1563 | ||
497f2e6b LN |
1564 | return talitos_edesc_alloc(ctx->dev, areq->src, areq->dst, 0, |
1565 | areq->nbytes, 0, 0, areq->base.flags); | |
4de9d0b5 LN |
1566 | } |
1567 | ||
1568 | static int ablkcipher_encrypt(struct ablkcipher_request *areq) | |
1569 | { | |
1570 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1571 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1572 | struct talitos_edesc *edesc; | |
1573 | ||
1574 | /* allocate extended descriptor */ | |
1575 | edesc = ablkcipher_edesc_alloc(areq); | |
1576 | if (IS_ERR(edesc)) | |
1577 | return PTR_ERR(edesc); | |
1578 | ||
1579 | /* set encrypt */ | |
1580 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; | |
1581 | ||
febec542 | 1582 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1583 | } |
1584 | ||
1585 | static int ablkcipher_decrypt(struct ablkcipher_request *areq) | |
1586 | { | |
1587 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1588 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1589 | struct talitos_edesc *edesc; | |
1590 | ||
1591 | /* allocate extended descriptor */ | |
1592 | edesc = ablkcipher_edesc_alloc(areq); | |
1593 | if (IS_ERR(edesc)) | |
1594 | return PTR_ERR(edesc); | |
1595 | ||
1596 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
1597 | ||
febec542 | 1598 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1599 | } |
1600 | ||
497f2e6b LN |
1601 | static void common_nonsnoop_hash_unmap(struct device *dev, |
1602 | struct talitos_edesc *edesc, | |
1603 | struct ahash_request *areq) | |
1604 | { | |
1605 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1606 | ||
1607 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1608 | ||
1609 | /* When using hashctx-in, must unmap it. */ | |
1610 | if (edesc->desc.ptr[1].len) | |
1611 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], | |
1612 | DMA_TO_DEVICE); | |
1613 | ||
1614 | if (edesc->desc.ptr[2].len) | |
1615 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], | |
1616 | DMA_TO_DEVICE); | |
1617 | ||
1618 | talitos_sg_unmap(dev, edesc, req_ctx->psrc, NULL); | |
1619 | ||
1620 | if (edesc->dma_len) | |
1621 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1622 | DMA_BIDIRECTIONAL); | |
1623 | ||
1624 | } | |
1625 | ||
1626 | static void ahash_done(struct device *dev, | |
1627 | struct talitos_desc *desc, void *context, | |
1628 | int err) | |
1629 | { | |
1630 | struct ahash_request *areq = context; | |
1631 | struct talitos_edesc *edesc = | |
1632 | container_of(desc, struct talitos_edesc, desc); | |
1633 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1634 | ||
1635 | if (!req_ctx->last && req_ctx->to_hash_later) { | |
1636 | /* Position any partial block for next update/final/finup */ | |
1637 | memcpy(req_ctx->buf, req_ctx->bufnext, req_ctx->to_hash_later); | |
5e833bc4 | 1638 | req_ctx->nbuf = req_ctx->to_hash_later; |
497f2e6b LN |
1639 | } |
1640 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1641 | ||
1642 | kfree(edesc); | |
1643 | ||
1644 | areq->base.complete(&areq->base, err); | |
1645 | } | |
1646 | ||
1647 | static int common_nonsnoop_hash(struct talitos_edesc *edesc, | |
1648 | struct ahash_request *areq, unsigned int length, | |
1649 | void (*callback) (struct device *dev, | |
1650 | struct talitos_desc *desc, | |
1651 | void *context, int error)) | |
1652 | { | |
1653 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1654 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1655 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1656 | struct device *dev = ctx->dev; | |
1657 | struct talitos_desc *desc = &edesc->desc; | |
1658 | int sg_count, ret; | |
1659 | ||
1660 | /* first DWORD empty */ | |
1661 | desc->ptr[0] = zero_entry; | |
1662 | ||
60f208d7 KP |
1663 | /* hash context in */ |
1664 | if (!req_ctx->first || req_ctx->swinit) { | |
497f2e6b LN |
1665 | map_single_talitos_ptr(dev, &desc->ptr[1], |
1666 | req_ctx->hw_context_size, | |
1667 | (char *)req_ctx->hw_context, 0, | |
1668 | DMA_TO_DEVICE); | |
60f208d7 | 1669 | req_ctx->swinit = 0; |
497f2e6b LN |
1670 | } else { |
1671 | desc->ptr[1] = zero_entry; | |
1672 | /* Indicate next op is not the first. */ | |
1673 | req_ctx->first = 0; | |
1674 | } | |
1675 | ||
1676 | /* HMAC key */ | |
1677 | if (ctx->keylen) | |
1678 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1679 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1680 | else | |
1681 | desc->ptr[2] = zero_entry; | |
1682 | ||
1683 | /* | |
1684 | * data in | |
1685 | */ | |
1686 | desc->ptr[3].len = cpu_to_be16(length); | |
1687 | desc->ptr[3].j_extent = 0; | |
1688 | ||
1689 | sg_count = talitos_map_sg(dev, req_ctx->psrc, | |
1690 | edesc->src_nents ? : 1, | |
1691 | DMA_TO_DEVICE, | |
1692 | edesc->src_is_chained); | |
1693 | ||
1694 | if (sg_count == 1) { | |
1695 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(req_ctx->psrc)); | |
1696 | } else { | |
1697 | sg_count = sg_to_link_tbl(req_ctx->psrc, sg_count, length, | |
1698 | &edesc->link_tbl[0]); | |
1699 | if (sg_count > 1) { | |
1700 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
1701 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); | |
1702 | dma_sync_single_for_device(ctx->dev, | |
1703 | edesc->dma_link_tbl, | |
1704 | edesc->dma_len, | |
1705 | DMA_BIDIRECTIONAL); | |
1706 | } else { | |
1707 | /* Only one segment now, so no link tbl needed */ | |
1708 | to_talitos_ptr(&desc->ptr[3], | |
1709 | sg_dma_address(req_ctx->psrc)); | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | /* fifth DWORD empty */ | |
1714 | desc->ptr[4] = zero_entry; | |
1715 | ||
1716 | /* hash/HMAC out -or- hash context out */ | |
1717 | if (req_ctx->last) | |
1718 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1719 | crypto_ahash_digestsize(tfm), | |
1720 | areq->result, 0, DMA_FROM_DEVICE); | |
1721 | else | |
1722 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1723 | req_ctx->hw_context_size, | |
1724 | req_ctx->hw_context, 0, DMA_FROM_DEVICE); | |
1725 | ||
1726 | /* last DWORD empty */ | |
1727 | desc->ptr[6] = zero_entry; | |
1728 | ||
5228f0f7 | 1729 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
497f2e6b LN |
1730 | if (ret != -EINPROGRESS) { |
1731 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1732 | kfree(edesc); | |
1733 | } | |
1734 | return ret; | |
1735 | } | |
1736 | ||
1737 | static struct talitos_edesc *ahash_edesc_alloc(struct ahash_request *areq, | |
1738 | unsigned int nbytes) | |
1739 | { | |
1740 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1741 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1742 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1743 | ||
1744 | return talitos_edesc_alloc(ctx->dev, req_ctx->psrc, NULL, 1, | |
1745 | nbytes, 0, 0, areq->base.flags); | |
1746 | } | |
1747 | ||
1748 | static int ahash_init(struct ahash_request *areq) | |
1749 | { | |
1750 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1751 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1752 | ||
1753 | /* Initialize the context */ | |
5e833bc4 | 1754 | req_ctx->nbuf = 0; |
60f208d7 KP |
1755 | req_ctx->first = 1; /* first indicates h/w must init its context */ |
1756 | req_ctx->swinit = 0; /* assume h/w init of context */ | |
497f2e6b LN |
1757 | req_ctx->hw_context_size = |
1758 | (crypto_ahash_digestsize(tfm) <= SHA256_DIGEST_SIZE) | |
1759 | ? TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256 | |
1760 | : TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512; | |
1761 | ||
1762 | return 0; | |
1763 | } | |
1764 | ||
60f208d7 KP |
1765 | /* |
1766 | * on h/w without explicit sha224 support, we initialize h/w context | |
1767 | * manually with sha224 constants, and tell it to run sha256. | |
1768 | */ | |
1769 | static int ahash_init_sha224_swinit(struct ahash_request *areq) | |
1770 | { | |
1771 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1772 | ||
1773 | ahash_init(areq); | |
1774 | req_ctx->swinit = 1;/* prevent h/w initting context with sha256 values*/ | |
1775 | ||
a752447a KP |
1776 | req_ctx->hw_context[0] = SHA224_H0; |
1777 | req_ctx->hw_context[1] = SHA224_H1; | |
1778 | req_ctx->hw_context[2] = SHA224_H2; | |
1779 | req_ctx->hw_context[3] = SHA224_H3; | |
1780 | req_ctx->hw_context[4] = SHA224_H4; | |
1781 | req_ctx->hw_context[5] = SHA224_H5; | |
1782 | req_ctx->hw_context[6] = SHA224_H6; | |
1783 | req_ctx->hw_context[7] = SHA224_H7; | |
60f208d7 KP |
1784 | |
1785 | /* init 64-bit count */ | |
1786 | req_ctx->hw_context[8] = 0; | |
1787 | req_ctx->hw_context[9] = 0; | |
1788 | ||
1789 | return 0; | |
1790 | } | |
1791 | ||
497f2e6b LN |
1792 | static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes) |
1793 | { | |
1794 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1795 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1796 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1797 | struct talitos_edesc *edesc; | |
1798 | unsigned int blocksize = | |
1799 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1800 | unsigned int nbytes_to_hash; | |
1801 | unsigned int to_hash_later; | |
5e833bc4 | 1802 | unsigned int nsg; |
497f2e6b LN |
1803 | int chained; |
1804 | ||
5e833bc4 LN |
1805 | if (!req_ctx->last && (nbytes + req_ctx->nbuf <= blocksize)) { |
1806 | /* Buffer up to one whole block */ | |
497f2e6b LN |
1807 | sg_copy_to_buffer(areq->src, |
1808 | sg_count(areq->src, nbytes, &chained), | |
5e833bc4 LN |
1809 | req_ctx->buf + req_ctx->nbuf, nbytes); |
1810 | req_ctx->nbuf += nbytes; | |
497f2e6b LN |
1811 | return 0; |
1812 | } | |
1813 | ||
5e833bc4 LN |
1814 | /* At least (blocksize + 1) bytes are available to hash */ |
1815 | nbytes_to_hash = nbytes + req_ctx->nbuf; | |
1816 | to_hash_later = nbytes_to_hash & (blocksize - 1); | |
1817 | ||
1818 | if (req_ctx->last) | |
1819 | to_hash_later = 0; | |
1820 | else if (to_hash_later) | |
1821 | /* There is a partial block. Hash the full block(s) now */ | |
1822 | nbytes_to_hash -= to_hash_later; | |
1823 | else { | |
1824 | /* Keep one block buffered */ | |
1825 | nbytes_to_hash -= blocksize; | |
1826 | to_hash_later = blocksize; | |
1827 | } | |
1828 | ||
1829 | /* Chain in any previously buffered data */ | |
1830 | if (req_ctx->nbuf) { | |
1831 | nsg = (req_ctx->nbuf < nbytes_to_hash) ? 2 : 1; | |
1832 | sg_init_table(req_ctx->bufsl, nsg); | |
1833 | sg_set_buf(req_ctx->bufsl, req_ctx->buf, req_ctx->nbuf); | |
1834 | if (nsg > 1) | |
1835 | scatterwalk_sg_chain(req_ctx->bufsl, 2, areq->src); | |
497f2e6b | 1836 | req_ctx->psrc = req_ctx->bufsl; |
5e833bc4 | 1837 | } else |
497f2e6b | 1838 | req_ctx->psrc = areq->src; |
5e833bc4 LN |
1839 | |
1840 | if (to_hash_later) { | |
1841 | int nents = sg_count(areq->src, nbytes, &chained); | |
1842 | sg_copy_end_to_buffer(areq->src, nents, | |
1843 | req_ctx->bufnext, | |
1844 | to_hash_later, | |
1845 | nbytes - to_hash_later); | |
497f2e6b | 1846 | } |
5e833bc4 | 1847 | req_ctx->to_hash_later = to_hash_later; |
497f2e6b | 1848 | |
5e833bc4 | 1849 | /* Allocate extended descriptor */ |
497f2e6b LN |
1850 | edesc = ahash_edesc_alloc(areq, nbytes_to_hash); |
1851 | if (IS_ERR(edesc)) | |
1852 | return PTR_ERR(edesc); | |
1853 | ||
1854 | edesc->desc.hdr = ctx->desc_hdr_template; | |
1855 | ||
1856 | /* On last one, request SEC to pad; otherwise continue */ | |
1857 | if (req_ctx->last) | |
1858 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_PAD; | |
1859 | else | |
1860 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_CONT; | |
1861 | ||
60f208d7 KP |
1862 | /* request SEC to INIT hash. */ |
1863 | if (req_ctx->first && !req_ctx->swinit) | |
497f2e6b LN |
1864 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_INIT; |
1865 | ||
1866 | /* When the tfm context has a keylen, it's an HMAC. | |
1867 | * A first or last (ie. not middle) descriptor must request HMAC. | |
1868 | */ | |
1869 | if (ctx->keylen && (req_ctx->first || req_ctx->last)) | |
1870 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_HMAC; | |
1871 | ||
1872 | return common_nonsnoop_hash(edesc, areq, nbytes_to_hash, | |
1873 | ahash_done); | |
1874 | } | |
1875 | ||
1876 | static int ahash_update(struct ahash_request *areq) | |
1877 | { | |
1878 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1879 | ||
1880 | req_ctx->last = 0; | |
1881 | ||
1882 | return ahash_process_req(areq, areq->nbytes); | |
1883 | } | |
1884 | ||
1885 | static int ahash_final(struct ahash_request *areq) | |
1886 | { | |
1887 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1888 | ||
1889 | req_ctx->last = 1; | |
1890 | ||
1891 | return ahash_process_req(areq, 0); | |
1892 | } | |
1893 | ||
1894 | static int ahash_finup(struct ahash_request *areq) | |
1895 | { | |
1896 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1897 | ||
1898 | req_ctx->last = 1; | |
1899 | ||
1900 | return ahash_process_req(areq, areq->nbytes); | |
1901 | } | |
1902 | ||
1903 | static int ahash_digest(struct ahash_request *areq) | |
1904 | { | |
1905 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
60f208d7 | 1906 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(areq); |
497f2e6b | 1907 | |
60f208d7 | 1908 | ahash->init(areq); |
497f2e6b LN |
1909 | req_ctx->last = 1; |
1910 | ||
1911 | return ahash_process_req(areq, areq->nbytes); | |
1912 | } | |
1913 | ||
79b3a418 LN |
1914 | struct keyhash_result { |
1915 | struct completion completion; | |
1916 | int err; | |
1917 | }; | |
1918 | ||
1919 | static void keyhash_complete(struct crypto_async_request *req, int err) | |
1920 | { | |
1921 | struct keyhash_result *res = req->data; | |
1922 | ||
1923 | if (err == -EINPROGRESS) | |
1924 | return; | |
1925 | ||
1926 | res->err = err; | |
1927 | complete(&res->completion); | |
1928 | } | |
1929 | ||
1930 | static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen, | |
1931 | u8 *hash) | |
1932 | { | |
1933 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1934 | ||
1935 | struct scatterlist sg[1]; | |
1936 | struct ahash_request *req; | |
1937 | struct keyhash_result hresult; | |
1938 | int ret; | |
1939 | ||
1940 | init_completion(&hresult.completion); | |
1941 | ||
1942 | req = ahash_request_alloc(tfm, GFP_KERNEL); | |
1943 | if (!req) | |
1944 | return -ENOMEM; | |
1945 | ||
1946 | /* Keep tfm keylen == 0 during hash of the long key */ | |
1947 | ctx->keylen = 0; | |
1948 | ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
1949 | keyhash_complete, &hresult); | |
1950 | ||
1951 | sg_init_one(&sg[0], key, keylen); | |
1952 | ||
1953 | ahash_request_set_crypt(req, sg, hash, keylen); | |
1954 | ret = crypto_ahash_digest(req); | |
1955 | switch (ret) { | |
1956 | case 0: | |
1957 | break; | |
1958 | case -EINPROGRESS: | |
1959 | case -EBUSY: | |
1960 | ret = wait_for_completion_interruptible( | |
1961 | &hresult.completion); | |
1962 | if (!ret) | |
1963 | ret = hresult.err; | |
1964 | break; | |
1965 | default: | |
1966 | break; | |
1967 | } | |
1968 | ahash_request_free(req); | |
1969 | ||
1970 | return ret; | |
1971 | } | |
1972 | ||
1973 | static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key, | |
1974 | unsigned int keylen) | |
1975 | { | |
1976 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1977 | unsigned int blocksize = | |
1978 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1979 | unsigned int digestsize = crypto_ahash_digestsize(tfm); | |
1980 | unsigned int keysize = keylen; | |
1981 | u8 hash[SHA512_DIGEST_SIZE]; | |
1982 | int ret; | |
1983 | ||
1984 | if (keylen <= blocksize) | |
1985 | memcpy(ctx->key, key, keysize); | |
1986 | else { | |
1987 | /* Must get the hash of the long key */ | |
1988 | ret = keyhash(tfm, key, keylen, hash); | |
1989 | ||
1990 | if (ret) { | |
1991 | crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1992 | return -EINVAL; | |
1993 | } | |
1994 | ||
1995 | keysize = digestsize; | |
1996 | memcpy(ctx->key, hash, digestsize); | |
1997 | } | |
1998 | ||
1999 | ctx->keylen = keysize; | |
2000 | ||
2001 | return 0; | |
2002 | } | |
2003 | ||
2004 | ||
9c4a7965 | 2005 | struct talitos_alg_template { |
d5e4aaef LN |
2006 | u32 type; |
2007 | union { | |
2008 | struct crypto_alg crypto; | |
acbf7c62 | 2009 | struct ahash_alg hash; |
d5e4aaef | 2010 | } alg; |
9c4a7965 KP |
2011 | __be32 desc_hdr_template; |
2012 | }; | |
2013 | ||
2014 | static struct talitos_alg_template driver_algs[] = { | |
56af8cd4 | 2015 | /* AEAD algorithms. These use a single-pass ipsec_esp descriptor */ |
d5e4aaef LN |
2016 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2017 | .alg.crypto = { | |
56af8cd4 LN |
2018 | .cra_name = "authenc(hmac(sha1),cbc(aes))", |
2019 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-talitos", | |
2020 | .cra_blocksize = AES_BLOCK_SIZE, | |
2021 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2022 | .cra_type = &crypto_aead_type, | |
2023 | .cra_aead = { | |
2024 | .setkey = aead_setkey, | |
2025 | .setauthsize = aead_setauthsize, | |
2026 | .encrypt = aead_encrypt, | |
2027 | .decrypt = aead_decrypt, | |
2028 | .givencrypt = aead_givencrypt, | |
2029 | .geniv = "<built-in>", | |
2030 | .ivsize = AES_BLOCK_SIZE, | |
2031 | .maxauthsize = SHA1_DIGEST_SIZE, | |
2032 | } | |
2033 | }, | |
9c4a7965 KP |
2034 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2035 | DESC_HDR_SEL0_AESU | | |
2036 | DESC_HDR_MODE0_AESU_CBC | | |
2037 | DESC_HDR_SEL1_MDEUA | | |
2038 | DESC_HDR_MODE1_MDEU_INIT | | |
2039 | DESC_HDR_MODE1_MDEU_PAD | | |
2040 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
70bcaca7 | 2041 | }, |
d5e4aaef LN |
2042 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2043 | .alg.crypto = { | |
56af8cd4 LN |
2044 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", |
2045 | .cra_driver_name = "authenc-hmac-sha1-cbc-3des-talitos", | |
2046 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2047 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2048 | .cra_type = &crypto_aead_type, | |
2049 | .cra_aead = { | |
2050 | .setkey = aead_setkey, | |
2051 | .setauthsize = aead_setauthsize, | |
2052 | .encrypt = aead_encrypt, | |
2053 | .decrypt = aead_decrypt, | |
2054 | .givencrypt = aead_givencrypt, | |
2055 | .geniv = "<built-in>", | |
2056 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2057 | .maxauthsize = SHA1_DIGEST_SIZE, | |
2058 | } | |
2059 | }, | |
70bcaca7 LN |
2060 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2061 | DESC_HDR_SEL0_DEU | | |
2062 | DESC_HDR_MODE0_DEU_CBC | | |
2063 | DESC_HDR_MODE0_DEU_3DES | | |
2064 | DESC_HDR_SEL1_MDEUA | | |
2065 | DESC_HDR_MODE1_MDEU_INIT | | |
2066 | DESC_HDR_MODE1_MDEU_PAD | | |
2067 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
3952f17e | 2068 | }, |
d5e4aaef LN |
2069 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2070 | .alg.crypto = { | |
56af8cd4 LN |
2071 | .cra_name = "authenc(hmac(sha256),cbc(aes))", |
2072 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-talitos", | |
2073 | .cra_blocksize = AES_BLOCK_SIZE, | |
2074 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2075 | .cra_type = &crypto_aead_type, | |
2076 | .cra_aead = { | |
2077 | .setkey = aead_setkey, | |
2078 | .setauthsize = aead_setauthsize, | |
2079 | .encrypt = aead_encrypt, | |
2080 | .decrypt = aead_decrypt, | |
2081 | .givencrypt = aead_givencrypt, | |
2082 | .geniv = "<built-in>", | |
2083 | .ivsize = AES_BLOCK_SIZE, | |
2084 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2085 | } | |
2086 | }, | |
3952f17e LN |
2087 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2088 | DESC_HDR_SEL0_AESU | | |
2089 | DESC_HDR_MODE0_AESU_CBC | | |
2090 | DESC_HDR_SEL1_MDEUA | | |
2091 | DESC_HDR_MODE1_MDEU_INIT | | |
2092 | DESC_HDR_MODE1_MDEU_PAD | | |
2093 | DESC_HDR_MODE1_MDEU_SHA256_HMAC, | |
2094 | }, | |
d5e4aaef LN |
2095 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2096 | .alg.crypto = { | |
56af8cd4 LN |
2097 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", |
2098 | .cra_driver_name = "authenc-hmac-sha256-cbc-3des-talitos", | |
2099 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2100 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2101 | .cra_type = &crypto_aead_type, | |
2102 | .cra_aead = { | |
2103 | .setkey = aead_setkey, | |
2104 | .setauthsize = aead_setauthsize, | |
2105 | .encrypt = aead_encrypt, | |
2106 | .decrypt = aead_decrypt, | |
2107 | .givencrypt = aead_givencrypt, | |
2108 | .geniv = "<built-in>", | |
2109 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2110 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2111 | } | |
2112 | }, | |
3952f17e LN |
2113 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2114 | DESC_HDR_SEL0_DEU | | |
2115 | DESC_HDR_MODE0_DEU_CBC | | |
2116 | DESC_HDR_MODE0_DEU_3DES | | |
2117 | DESC_HDR_SEL1_MDEUA | | |
2118 | DESC_HDR_MODE1_MDEU_INIT | | |
2119 | DESC_HDR_MODE1_MDEU_PAD | | |
2120 | DESC_HDR_MODE1_MDEU_SHA256_HMAC, | |
2121 | }, | |
d5e4aaef LN |
2122 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2123 | .alg.crypto = { | |
56af8cd4 LN |
2124 | .cra_name = "authenc(hmac(md5),cbc(aes))", |
2125 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-talitos", | |
2126 | .cra_blocksize = AES_BLOCK_SIZE, | |
2127 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2128 | .cra_type = &crypto_aead_type, | |
2129 | .cra_aead = { | |
2130 | .setkey = aead_setkey, | |
2131 | .setauthsize = aead_setauthsize, | |
2132 | .encrypt = aead_encrypt, | |
2133 | .decrypt = aead_decrypt, | |
2134 | .givencrypt = aead_givencrypt, | |
2135 | .geniv = "<built-in>", | |
2136 | .ivsize = AES_BLOCK_SIZE, | |
2137 | .maxauthsize = MD5_DIGEST_SIZE, | |
2138 | } | |
2139 | }, | |
3952f17e LN |
2140 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2141 | DESC_HDR_SEL0_AESU | | |
2142 | DESC_HDR_MODE0_AESU_CBC | | |
2143 | DESC_HDR_SEL1_MDEUA | | |
2144 | DESC_HDR_MODE1_MDEU_INIT | | |
2145 | DESC_HDR_MODE1_MDEU_PAD | | |
2146 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
2147 | }, | |
d5e4aaef LN |
2148 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2149 | .alg.crypto = { | |
56af8cd4 LN |
2150 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", |
2151 | .cra_driver_name = "authenc-hmac-md5-cbc-3des-talitos", | |
2152 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2153 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2154 | .cra_type = &crypto_aead_type, | |
2155 | .cra_aead = { | |
2156 | .setkey = aead_setkey, | |
2157 | .setauthsize = aead_setauthsize, | |
2158 | .encrypt = aead_encrypt, | |
2159 | .decrypt = aead_decrypt, | |
2160 | .givencrypt = aead_givencrypt, | |
2161 | .geniv = "<built-in>", | |
2162 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2163 | .maxauthsize = MD5_DIGEST_SIZE, | |
2164 | } | |
2165 | }, | |
3952f17e LN |
2166 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2167 | DESC_HDR_SEL0_DEU | | |
2168 | DESC_HDR_MODE0_DEU_CBC | | |
2169 | DESC_HDR_MODE0_DEU_3DES | | |
2170 | DESC_HDR_SEL1_MDEUA | | |
2171 | DESC_HDR_MODE1_MDEU_INIT | | |
2172 | DESC_HDR_MODE1_MDEU_PAD | | |
2173 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
4de9d0b5 LN |
2174 | }, |
2175 | /* ABLKCIPHER algorithms. */ | |
d5e4aaef LN |
2176 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2177 | .alg.crypto = { | |
4de9d0b5 LN |
2178 | .cra_name = "cbc(aes)", |
2179 | .cra_driver_name = "cbc-aes-talitos", | |
2180 | .cra_blocksize = AES_BLOCK_SIZE, | |
2181 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2182 | CRYPTO_ALG_ASYNC, | |
2183 | .cra_type = &crypto_ablkcipher_type, | |
2184 | .cra_ablkcipher = { | |
2185 | .setkey = ablkcipher_setkey, | |
2186 | .encrypt = ablkcipher_encrypt, | |
2187 | .decrypt = ablkcipher_decrypt, | |
2188 | .geniv = "eseqiv", | |
2189 | .min_keysize = AES_MIN_KEY_SIZE, | |
2190 | .max_keysize = AES_MAX_KEY_SIZE, | |
2191 | .ivsize = AES_BLOCK_SIZE, | |
2192 | } | |
2193 | }, | |
2194 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2195 | DESC_HDR_SEL0_AESU | | |
2196 | DESC_HDR_MODE0_AESU_CBC, | |
2197 | }, | |
d5e4aaef LN |
2198 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2199 | .alg.crypto = { | |
4de9d0b5 LN |
2200 | .cra_name = "cbc(des3_ede)", |
2201 | .cra_driver_name = "cbc-3des-talitos", | |
2202 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2203 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2204 | CRYPTO_ALG_ASYNC, | |
2205 | .cra_type = &crypto_ablkcipher_type, | |
2206 | .cra_ablkcipher = { | |
2207 | .setkey = ablkcipher_setkey, | |
2208 | .encrypt = ablkcipher_encrypt, | |
2209 | .decrypt = ablkcipher_decrypt, | |
2210 | .geniv = "eseqiv", | |
2211 | .min_keysize = DES3_EDE_KEY_SIZE, | |
2212 | .max_keysize = DES3_EDE_KEY_SIZE, | |
2213 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2214 | } | |
2215 | }, | |
2216 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2217 | DESC_HDR_SEL0_DEU | | |
2218 | DESC_HDR_MODE0_DEU_CBC | | |
2219 | DESC_HDR_MODE0_DEU_3DES, | |
497f2e6b LN |
2220 | }, |
2221 | /* AHASH algorithms. */ | |
2222 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2223 | .alg.hash = { | |
2224 | .init = ahash_init, | |
2225 | .update = ahash_update, | |
2226 | .final = ahash_final, | |
2227 | .finup = ahash_finup, | |
2228 | .digest = ahash_digest, | |
2229 | .halg.digestsize = MD5_DIGEST_SIZE, | |
2230 | .halg.base = { | |
2231 | .cra_name = "md5", | |
2232 | .cra_driver_name = "md5-talitos", | |
2233 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2234 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2235 | CRYPTO_ALG_ASYNC, | |
2236 | .cra_type = &crypto_ahash_type | |
2237 | } | |
2238 | }, | |
2239 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2240 | DESC_HDR_SEL0_MDEUA | | |
2241 | DESC_HDR_MODE0_MDEU_MD5, | |
2242 | }, | |
2243 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2244 | .alg.hash = { | |
2245 | .init = ahash_init, | |
2246 | .update = ahash_update, | |
2247 | .final = ahash_final, | |
2248 | .finup = ahash_finup, | |
2249 | .digest = ahash_digest, | |
2250 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
2251 | .halg.base = { | |
2252 | .cra_name = "sha1", | |
2253 | .cra_driver_name = "sha1-talitos", | |
2254 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2255 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2256 | CRYPTO_ALG_ASYNC, | |
2257 | .cra_type = &crypto_ahash_type | |
2258 | } | |
2259 | }, | |
2260 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2261 | DESC_HDR_SEL0_MDEUA | | |
2262 | DESC_HDR_MODE0_MDEU_SHA1, | |
2263 | }, | |
60f208d7 KP |
2264 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2265 | .alg.hash = { | |
2266 | .init = ahash_init, | |
2267 | .update = ahash_update, | |
2268 | .final = ahash_final, | |
2269 | .finup = ahash_finup, | |
2270 | .digest = ahash_digest, | |
2271 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
2272 | .halg.base = { | |
2273 | .cra_name = "sha224", | |
2274 | .cra_driver_name = "sha224-talitos", | |
2275 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2276 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2277 | CRYPTO_ALG_ASYNC, | |
2278 | .cra_type = &crypto_ahash_type | |
2279 | } | |
2280 | }, | |
2281 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2282 | DESC_HDR_SEL0_MDEUA | | |
2283 | DESC_HDR_MODE0_MDEU_SHA224, | |
2284 | }, | |
497f2e6b LN |
2285 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2286 | .alg.hash = { | |
2287 | .init = ahash_init, | |
2288 | .update = ahash_update, | |
2289 | .final = ahash_final, | |
2290 | .finup = ahash_finup, | |
2291 | .digest = ahash_digest, | |
2292 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
2293 | .halg.base = { | |
2294 | .cra_name = "sha256", | |
2295 | .cra_driver_name = "sha256-talitos", | |
2296 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2297 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2298 | CRYPTO_ALG_ASYNC, | |
2299 | .cra_type = &crypto_ahash_type | |
2300 | } | |
2301 | }, | |
2302 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2303 | DESC_HDR_SEL0_MDEUA | | |
2304 | DESC_HDR_MODE0_MDEU_SHA256, | |
2305 | }, | |
2306 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2307 | .alg.hash = { | |
2308 | .init = ahash_init, | |
2309 | .update = ahash_update, | |
2310 | .final = ahash_final, | |
2311 | .finup = ahash_finup, | |
2312 | .digest = ahash_digest, | |
2313 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
2314 | .halg.base = { | |
2315 | .cra_name = "sha384", | |
2316 | .cra_driver_name = "sha384-talitos", | |
2317 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2318 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2319 | CRYPTO_ALG_ASYNC, | |
2320 | .cra_type = &crypto_ahash_type | |
2321 | } | |
2322 | }, | |
2323 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2324 | DESC_HDR_SEL0_MDEUB | | |
2325 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2326 | }, | |
2327 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2328 | .alg.hash = { | |
2329 | .init = ahash_init, | |
2330 | .update = ahash_update, | |
2331 | .final = ahash_final, | |
2332 | .finup = ahash_finup, | |
2333 | .digest = ahash_digest, | |
2334 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
2335 | .halg.base = { | |
2336 | .cra_name = "sha512", | |
2337 | .cra_driver_name = "sha512-talitos", | |
2338 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2339 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2340 | CRYPTO_ALG_ASYNC, | |
2341 | .cra_type = &crypto_ahash_type | |
2342 | } | |
2343 | }, | |
2344 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2345 | DESC_HDR_SEL0_MDEUB | | |
2346 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2347 | }, | |
79b3a418 LN |
2348 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2349 | .alg.hash = { | |
2350 | .init = ahash_init, | |
2351 | .update = ahash_update, | |
2352 | .final = ahash_final, | |
2353 | .finup = ahash_finup, | |
2354 | .digest = ahash_digest, | |
2355 | .setkey = ahash_setkey, | |
2356 | .halg.digestsize = MD5_DIGEST_SIZE, | |
2357 | .halg.base = { | |
2358 | .cra_name = "hmac(md5)", | |
2359 | .cra_driver_name = "hmac-md5-talitos", | |
2360 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2361 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2362 | CRYPTO_ALG_ASYNC, | |
2363 | .cra_type = &crypto_ahash_type | |
2364 | } | |
2365 | }, | |
2366 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2367 | DESC_HDR_SEL0_MDEUA | | |
2368 | DESC_HDR_MODE0_MDEU_MD5, | |
2369 | }, | |
2370 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2371 | .alg.hash = { | |
2372 | .init = ahash_init, | |
2373 | .update = ahash_update, | |
2374 | .final = ahash_final, | |
2375 | .finup = ahash_finup, | |
2376 | .digest = ahash_digest, | |
2377 | .setkey = ahash_setkey, | |
2378 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
2379 | .halg.base = { | |
2380 | .cra_name = "hmac(sha1)", | |
2381 | .cra_driver_name = "hmac-sha1-talitos", | |
2382 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2383 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2384 | CRYPTO_ALG_ASYNC, | |
2385 | .cra_type = &crypto_ahash_type | |
2386 | } | |
2387 | }, | |
2388 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2389 | DESC_HDR_SEL0_MDEUA | | |
2390 | DESC_HDR_MODE0_MDEU_SHA1, | |
2391 | }, | |
2392 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2393 | .alg.hash = { | |
2394 | .init = ahash_init, | |
2395 | .update = ahash_update, | |
2396 | .final = ahash_final, | |
2397 | .finup = ahash_finup, | |
2398 | .digest = ahash_digest, | |
2399 | .setkey = ahash_setkey, | |
2400 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
2401 | .halg.base = { | |
2402 | .cra_name = "hmac(sha224)", | |
2403 | .cra_driver_name = "hmac-sha224-talitos", | |
2404 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2405 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2406 | CRYPTO_ALG_ASYNC, | |
2407 | .cra_type = &crypto_ahash_type | |
2408 | } | |
2409 | }, | |
2410 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2411 | DESC_HDR_SEL0_MDEUA | | |
2412 | DESC_HDR_MODE0_MDEU_SHA224, | |
2413 | }, | |
2414 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2415 | .alg.hash = { | |
2416 | .init = ahash_init, | |
2417 | .update = ahash_update, | |
2418 | .final = ahash_final, | |
2419 | .finup = ahash_finup, | |
2420 | .digest = ahash_digest, | |
2421 | .setkey = ahash_setkey, | |
2422 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
2423 | .halg.base = { | |
2424 | .cra_name = "hmac(sha256)", | |
2425 | .cra_driver_name = "hmac-sha256-talitos", | |
2426 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2427 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2428 | CRYPTO_ALG_ASYNC, | |
2429 | .cra_type = &crypto_ahash_type | |
2430 | } | |
2431 | }, | |
2432 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2433 | DESC_HDR_SEL0_MDEUA | | |
2434 | DESC_HDR_MODE0_MDEU_SHA256, | |
2435 | }, | |
2436 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2437 | .alg.hash = { | |
2438 | .init = ahash_init, | |
2439 | .update = ahash_update, | |
2440 | .final = ahash_final, | |
2441 | .finup = ahash_finup, | |
2442 | .digest = ahash_digest, | |
2443 | .setkey = ahash_setkey, | |
2444 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
2445 | .halg.base = { | |
2446 | .cra_name = "hmac(sha384)", | |
2447 | .cra_driver_name = "hmac-sha384-talitos", | |
2448 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2449 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2450 | CRYPTO_ALG_ASYNC, | |
2451 | .cra_type = &crypto_ahash_type | |
2452 | } | |
2453 | }, | |
2454 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2455 | DESC_HDR_SEL0_MDEUB | | |
2456 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2457 | }, | |
2458 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2459 | .alg.hash = { | |
2460 | .init = ahash_init, | |
2461 | .update = ahash_update, | |
2462 | .final = ahash_final, | |
2463 | .finup = ahash_finup, | |
2464 | .digest = ahash_digest, | |
2465 | .setkey = ahash_setkey, | |
2466 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
2467 | .halg.base = { | |
2468 | .cra_name = "hmac(sha512)", | |
2469 | .cra_driver_name = "hmac-sha512-talitos", | |
2470 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2471 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2472 | CRYPTO_ALG_ASYNC, | |
2473 | .cra_type = &crypto_ahash_type | |
2474 | } | |
2475 | }, | |
2476 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2477 | DESC_HDR_SEL0_MDEUB | | |
2478 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2479 | } | |
9c4a7965 KP |
2480 | }; |
2481 | ||
2482 | struct talitos_crypto_alg { | |
2483 | struct list_head entry; | |
2484 | struct device *dev; | |
acbf7c62 | 2485 | struct talitos_alg_template algt; |
9c4a7965 KP |
2486 | }; |
2487 | ||
2488 | static int talitos_cra_init(struct crypto_tfm *tfm) | |
2489 | { | |
2490 | struct crypto_alg *alg = tfm->__crt_alg; | |
19bbbc63 | 2491 | struct talitos_crypto_alg *talitos_alg; |
9c4a7965 | 2492 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); |
5228f0f7 | 2493 | struct talitos_private *priv; |
9c4a7965 | 2494 | |
497f2e6b LN |
2495 | if ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AHASH) |
2496 | talitos_alg = container_of(__crypto_ahash_alg(alg), | |
2497 | struct talitos_crypto_alg, | |
2498 | algt.alg.hash); | |
2499 | else | |
2500 | talitos_alg = container_of(alg, struct talitos_crypto_alg, | |
2501 | algt.alg.crypto); | |
19bbbc63 | 2502 | |
9c4a7965 KP |
2503 | /* update context with ptr to dev */ |
2504 | ctx->dev = talitos_alg->dev; | |
19bbbc63 | 2505 | |
5228f0f7 KP |
2506 | /* assign SEC channel to tfm in round-robin fashion */ |
2507 | priv = dev_get_drvdata(ctx->dev); | |
2508 | ctx->ch = atomic_inc_return(&priv->last_chan) & | |
2509 | (priv->num_channels - 1); | |
2510 | ||
9c4a7965 | 2511 | /* copy descriptor header template value */ |
acbf7c62 | 2512 | ctx->desc_hdr_template = talitos_alg->algt.desc_hdr_template; |
9c4a7965 | 2513 | |
602dba5a KP |
2514 | /* select done notification */ |
2515 | ctx->desc_hdr_template |= DESC_HDR_DONE_NOTIFY; | |
2516 | ||
497f2e6b LN |
2517 | return 0; |
2518 | } | |
2519 | ||
2520 | static int talitos_cra_init_aead(struct crypto_tfm *tfm) | |
2521 | { | |
2522 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2523 | ||
2524 | talitos_cra_init(tfm); | |
9c4a7965 KP |
2525 | |
2526 | /* random first IV */ | |
70bcaca7 | 2527 | get_random_bytes(ctx->iv, TALITOS_MAX_IV_LENGTH); |
9c4a7965 KP |
2528 | |
2529 | return 0; | |
2530 | } | |
2531 | ||
497f2e6b LN |
2532 | static int talitos_cra_init_ahash(struct crypto_tfm *tfm) |
2533 | { | |
2534 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2535 | ||
2536 | talitos_cra_init(tfm); | |
2537 | ||
2538 | ctx->keylen = 0; | |
2539 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
2540 | sizeof(struct talitos_ahash_req_ctx)); | |
2541 | ||
2542 | return 0; | |
2543 | } | |
2544 | ||
9c4a7965 KP |
2545 | /* |
2546 | * given the alg's descriptor header template, determine whether descriptor | |
2547 | * type and primary/secondary execution units required match the hw | |
2548 | * capabilities description provided in the device tree node. | |
2549 | */ | |
2550 | static int hw_supports(struct device *dev, __be32 desc_hdr_template) | |
2551 | { | |
2552 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2553 | int ret; | |
2554 | ||
2555 | ret = (1 << DESC_TYPE(desc_hdr_template) & priv->desc_types) && | |
2556 | (1 << PRIMARY_EU(desc_hdr_template) & priv->exec_units); | |
2557 | ||
2558 | if (SECONDARY_EU(desc_hdr_template)) | |
2559 | ret = ret && (1 << SECONDARY_EU(desc_hdr_template) | |
2560 | & priv->exec_units); | |
2561 | ||
2562 | return ret; | |
2563 | } | |
2564 | ||
2dc11581 | 2565 | static int talitos_remove(struct platform_device *ofdev) |
9c4a7965 KP |
2566 | { |
2567 | struct device *dev = &ofdev->dev; | |
2568 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2569 | struct talitos_crypto_alg *t_alg, *n; | |
2570 | int i; | |
2571 | ||
2572 | list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) { | |
acbf7c62 LN |
2573 | switch (t_alg->algt.type) { |
2574 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2575 | case CRYPTO_ALG_TYPE_AEAD: | |
2576 | crypto_unregister_alg(&t_alg->algt.alg.crypto); | |
2577 | break; | |
2578 | case CRYPTO_ALG_TYPE_AHASH: | |
2579 | crypto_unregister_ahash(&t_alg->algt.alg.hash); | |
2580 | break; | |
2581 | } | |
9c4a7965 KP |
2582 | list_del(&t_alg->entry); |
2583 | kfree(t_alg); | |
2584 | } | |
2585 | ||
2586 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) | |
2587 | talitos_unregister_rng(dev); | |
2588 | ||
4b992628 | 2589 | for (i = 0; i < priv->num_channels; i++) |
0b798247 | 2590 | kfree(priv->chan[i].fifo); |
9c4a7965 | 2591 | |
4b992628 | 2592 | kfree(priv->chan); |
9c4a7965 | 2593 | |
c3e337f8 | 2594 | for (i = 0; i < 2; i++) |
2cdba3cf | 2595 | if (priv->irq[i]) { |
c3e337f8 KP |
2596 | free_irq(priv->irq[i], dev); |
2597 | irq_dispose_mapping(priv->irq[i]); | |
2598 | } | |
9c4a7965 | 2599 | |
c3e337f8 | 2600 | tasklet_kill(&priv->done_task[0]); |
2cdba3cf | 2601 | if (priv->irq[1]) |
c3e337f8 | 2602 | tasklet_kill(&priv->done_task[1]); |
9c4a7965 KP |
2603 | |
2604 | iounmap(priv->reg); | |
2605 | ||
2606 | dev_set_drvdata(dev, NULL); | |
2607 | ||
2608 | kfree(priv); | |
2609 | ||
2610 | return 0; | |
2611 | } | |
2612 | ||
2613 | static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev, | |
2614 | struct talitos_alg_template | |
2615 | *template) | |
2616 | { | |
60f208d7 | 2617 | struct talitos_private *priv = dev_get_drvdata(dev); |
9c4a7965 KP |
2618 | struct talitos_crypto_alg *t_alg; |
2619 | struct crypto_alg *alg; | |
2620 | ||
2621 | t_alg = kzalloc(sizeof(struct talitos_crypto_alg), GFP_KERNEL); | |
2622 | if (!t_alg) | |
2623 | return ERR_PTR(-ENOMEM); | |
2624 | ||
acbf7c62 LN |
2625 | t_alg->algt = *template; |
2626 | ||
2627 | switch (t_alg->algt.type) { | |
2628 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
497f2e6b LN |
2629 | alg = &t_alg->algt.alg.crypto; |
2630 | alg->cra_init = talitos_cra_init; | |
2631 | break; | |
acbf7c62 LN |
2632 | case CRYPTO_ALG_TYPE_AEAD: |
2633 | alg = &t_alg->algt.alg.crypto; | |
497f2e6b | 2634 | alg->cra_init = talitos_cra_init_aead; |
acbf7c62 LN |
2635 | break; |
2636 | case CRYPTO_ALG_TYPE_AHASH: | |
2637 | alg = &t_alg->algt.alg.hash.halg.base; | |
497f2e6b | 2638 | alg->cra_init = talitos_cra_init_ahash; |
79b3a418 | 2639 | if (!(priv->features & TALITOS_FTR_HMAC_OK) && |
0b2730d8 KP |
2640 | !strncmp(alg->cra_name, "hmac", 4)) { |
2641 | kfree(t_alg); | |
79b3a418 | 2642 | return ERR_PTR(-ENOTSUPP); |
0b2730d8 | 2643 | } |
60f208d7 | 2644 | if (!(priv->features & TALITOS_FTR_SHA224_HWINIT) && |
79b3a418 LN |
2645 | (!strcmp(alg->cra_name, "sha224") || |
2646 | !strcmp(alg->cra_name, "hmac(sha224)"))) { | |
60f208d7 KP |
2647 | t_alg->algt.alg.hash.init = ahash_init_sha224_swinit; |
2648 | t_alg->algt.desc_hdr_template = | |
2649 | DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2650 | DESC_HDR_SEL0_MDEUA | | |
2651 | DESC_HDR_MODE0_MDEU_SHA256; | |
2652 | } | |
497f2e6b | 2653 | break; |
1d11911a KP |
2654 | default: |
2655 | dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type); | |
2656 | return ERR_PTR(-EINVAL); | |
acbf7c62 | 2657 | } |
9c4a7965 | 2658 | |
9c4a7965 | 2659 | alg->cra_module = THIS_MODULE; |
9c4a7965 | 2660 | alg->cra_priority = TALITOS_CRA_PRIORITY; |
9c4a7965 | 2661 | alg->cra_alignmask = 0; |
9c4a7965 | 2662 | alg->cra_ctxsize = sizeof(struct talitos_ctx); |
d912bb76 | 2663 | alg->cra_flags |= CRYPTO_ALG_KERN_DRIVER_ONLY; |
9c4a7965 | 2664 | |
9c4a7965 KP |
2665 | t_alg->dev = dev; |
2666 | ||
2667 | return t_alg; | |
2668 | } | |
2669 | ||
c3e337f8 KP |
2670 | static int talitos_probe_irq(struct platform_device *ofdev) |
2671 | { | |
2672 | struct device *dev = &ofdev->dev; | |
2673 | struct device_node *np = ofdev->dev.of_node; | |
2674 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2675 | int err; | |
2676 | ||
2677 | priv->irq[0] = irq_of_parse_and_map(np, 0); | |
2cdba3cf | 2678 | if (!priv->irq[0]) { |
c3e337f8 KP |
2679 | dev_err(dev, "failed to map irq\n"); |
2680 | return -EINVAL; | |
2681 | } | |
2682 | ||
2683 | priv->irq[1] = irq_of_parse_and_map(np, 1); | |
2684 | ||
2685 | /* get the primary irq line */ | |
2cdba3cf | 2686 | if (!priv->irq[1]) { |
c3e337f8 KP |
2687 | err = request_irq(priv->irq[0], talitos_interrupt_4ch, 0, |
2688 | dev_driver_string(dev), dev); | |
2689 | goto primary_out; | |
2690 | } | |
2691 | ||
2692 | err = request_irq(priv->irq[0], talitos_interrupt_ch0_2, 0, | |
2693 | dev_driver_string(dev), dev); | |
2694 | if (err) | |
2695 | goto primary_out; | |
2696 | ||
2697 | /* get the secondary irq line */ | |
2698 | err = request_irq(priv->irq[1], talitos_interrupt_ch1_3, 0, | |
2699 | dev_driver_string(dev), dev); | |
2700 | if (err) { | |
2701 | dev_err(dev, "failed to request secondary irq\n"); | |
2702 | irq_dispose_mapping(priv->irq[1]); | |
2cdba3cf | 2703 | priv->irq[1] = 0; |
c3e337f8 KP |
2704 | } |
2705 | ||
2706 | return err; | |
2707 | ||
2708 | primary_out: | |
2709 | if (err) { | |
2710 | dev_err(dev, "failed to request primary irq\n"); | |
2711 | irq_dispose_mapping(priv->irq[0]); | |
2cdba3cf | 2712 | priv->irq[0] = 0; |
c3e337f8 KP |
2713 | } |
2714 | ||
2715 | return err; | |
2716 | } | |
2717 | ||
1c48a5c9 | 2718 | static int talitos_probe(struct platform_device *ofdev) |
9c4a7965 KP |
2719 | { |
2720 | struct device *dev = &ofdev->dev; | |
61c7a080 | 2721 | struct device_node *np = ofdev->dev.of_node; |
9c4a7965 KP |
2722 | struct talitos_private *priv; |
2723 | const unsigned int *prop; | |
2724 | int i, err; | |
2725 | ||
2726 | priv = kzalloc(sizeof(struct talitos_private), GFP_KERNEL); | |
2727 | if (!priv) | |
2728 | return -ENOMEM; | |
2729 | ||
2730 | dev_set_drvdata(dev, priv); | |
2731 | ||
2732 | priv->ofdev = ofdev; | |
2733 | ||
511d63cb HG |
2734 | spin_lock_init(&priv->reg_lock); |
2735 | ||
c3e337f8 KP |
2736 | err = talitos_probe_irq(ofdev); |
2737 | if (err) | |
9c4a7965 | 2738 | goto err_out; |
9c4a7965 | 2739 | |
2cdba3cf | 2740 | if (!priv->irq[1]) { |
c3e337f8 KP |
2741 | tasklet_init(&priv->done_task[0], talitos_done_4ch, |
2742 | (unsigned long)dev); | |
2743 | } else { | |
2744 | tasklet_init(&priv->done_task[0], talitos_done_ch0_2, | |
2745 | (unsigned long)dev); | |
2746 | tasklet_init(&priv->done_task[1], talitos_done_ch1_3, | |
2747 | (unsigned long)dev); | |
9c4a7965 KP |
2748 | } |
2749 | ||
c3e337f8 KP |
2750 | INIT_LIST_HEAD(&priv->alg_list); |
2751 | ||
9c4a7965 KP |
2752 | priv->reg = of_iomap(np, 0); |
2753 | if (!priv->reg) { | |
2754 | dev_err(dev, "failed to of_iomap\n"); | |
2755 | err = -ENOMEM; | |
2756 | goto err_out; | |
2757 | } | |
2758 | ||
2759 | /* get SEC version capabilities from device tree */ | |
2760 | prop = of_get_property(np, "fsl,num-channels", NULL); | |
2761 | if (prop) | |
2762 | priv->num_channels = *prop; | |
2763 | ||
2764 | prop = of_get_property(np, "fsl,channel-fifo-len", NULL); | |
2765 | if (prop) | |
2766 | priv->chfifo_len = *prop; | |
2767 | ||
2768 | prop = of_get_property(np, "fsl,exec-units-mask", NULL); | |
2769 | if (prop) | |
2770 | priv->exec_units = *prop; | |
2771 | ||
2772 | prop = of_get_property(np, "fsl,descriptor-types-mask", NULL); | |
2773 | if (prop) | |
2774 | priv->desc_types = *prop; | |
2775 | ||
2776 | if (!is_power_of_2(priv->num_channels) || !priv->chfifo_len || | |
2777 | !priv->exec_units || !priv->desc_types) { | |
2778 | dev_err(dev, "invalid property data in device tree node\n"); | |
2779 | err = -EINVAL; | |
2780 | goto err_out; | |
2781 | } | |
2782 | ||
f3c85bc1 LN |
2783 | if (of_device_is_compatible(np, "fsl,sec3.0")) |
2784 | priv->features |= TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT; | |
2785 | ||
fe5720e2 | 2786 | if (of_device_is_compatible(np, "fsl,sec2.1")) |
60f208d7 | 2787 | priv->features |= TALITOS_FTR_HW_AUTH_CHECK | |
79b3a418 LN |
2788 | TALITOS_FTR_SHA224_HWINIT | |
2789 | TALITOS_FTR_HMAC_OK; | |
fe5720e2 | 2790 | |
4b992628 KP |
2791 | priv->chan = kzalloc(sizeof(struct talitos_channel) * |
2792 | priv->num_channels, GFP_KERNEL); | |
2793 | if (!priv->chan) { | |
2794 | dev_err(dev, "failed to allocate channel management space\n"); | |
9c4a7965 KP |
2795 | err = -ENOMEM; |
2796 | goto err_out; | |
2797 | } | |
2798 | ||
c3e337f8 KP |
2799 | for (i = 0; i < priv->num_channels; i++) { |
2800 | priv->chan[i].reg = priv->reg + TALITOS_CH_STRIDE * (i + 1); | |
2cdba3cf | 2801 | if (!priv->irq[1] || !(i & 1)) |
c3e337f8 KP |
2802 | priv->chan[i].reg += TALITOS_CH_BASE_OFFSET; |
2803 | } | |
ad42d5fc | 2804 | |
9c4a7965 | 2805 | for (i = 0; i < priv->num_channels; i++) { |
4b992628 KP |
2806 | spin_lock_init(&priv->chan[i].head_lock); |
2807 | spin_lock_init(&priv->chan[i].tail_lock); | |
9c4a7965 KP |
2808 | } |
2809 | ||
2810 | priv->fifo_len = roundup_pow_of_two(priv->chfifo_len); | |
2811 | ||
2812 | for (i = 0; i < priv->num_channels; i++) { | |
4b992628 KP |
2813 | priv->chan[i].fifo = kzalloc(sizeof(struct talitos_request) * |
2814 | priv->fifo_len, GFP_KERNEL); | |
2815 | if (!priv->chan[i].fifo) { | |
9c4a7965 KP |
2816 | dev_err(dev, "failed to allocate request fifo %d\n", i); |
2817 | err = -ENOMEM; | |
2818 | goto err_out; | |
2819 | } | |
2820 | } | |
2821 | ||
ec6644d6 | 2822 | for (i = 0; i < priv->num_channels; i++) |
4b992628 KP |
2823 | atomic_set(&priv->chan[i].submit_count, |
2824 | -(priv->chfifo_len - 1)); | |
9c4a7965 | 2825 | |
81eb024c KP |
2826 | dma_set_mask(dev, DMA_BIT_MASK(36)); |
2827 | ||
9c4a7965 KP |
2828 | /* reset and initialize the h/w */ |
2829 | err = init_device(dev); | |
2830 | if (err) { | |
2831 | dev_err(dev, "failed to initialize device\n"); | |
2832 | goto err_out; | |
2833 | } | |
2834 | ||
2835 | /* register the RNG, if available */ | |
2836 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) { | |
2837 | err = talitos_register_rng(dev); | |
2838 | if (err) { | |
2839 | dev_err(dev, "failed to register hwrng: %d\n", err); | |
2840 | goto err_out; | |
2841 | } else | |
2842 | dev_info(dev, "hwrng\n"); | |
2843 | } | |
2844 | ||
2845 | /* register crypto algorithms the device supports */ | |
9c4a7965 KP |
2846 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { |
2847 | if (hw_supports(dev, driver_algs[i].desc_hdr_template)) { | |
2848 | struct talitos_crypto_alg *t_alg; | |
acbf7c62 | 2849 | char *name = NULL; |
9c4a7965 KP |
2850 | |
2851 | t_alg = talitos_alg_alloc(dev, &driver_algs[i]); | |
2852 | if (IS_ERR(t_alg)) { | |
2853 | err = PTR_ERR(t_alg); | |
0b2730d8 | 2854 | if (err == -ENOTSUPP) |
79b3a418 | 2855 | continue; |
9c4a7965 KP |
2856 | goto err_out; |
2857 | } | |
2858 | ||
acbf7c62 LN |
2859 | switch (t_alg->algt.type) { |
2860 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2861 | case CRYPTO_ALG_TYPE_AEAD: | |
2862 | err = crypto_register_alg( | |
2863 | &t_alg->algt.alg.crypto); | |
2864 | name = t_alg->algt.alg.crypto.cra_driver_name; | |
2865 | break; | |
2866 | case CRYPTO_ALG_TYPE_AHASH: | |
2867 | err = crypto_register_ahash( | |
2868 | &t_alg->algt.alg.hash); | |
2869 | name = | |
2870 | t_alg->algt.alg.hash.halg.base.cra_driver_name; | |
2871 | break; | |
2872 | } | |
9c4a7965 KP |
2873 | if (err) { |
2874 | dev_err(dev, "%s alg registration failed\n", | |
acbf7c62 | 2875 | name); |
9c4a7965 | 2876 | kfree(t_alg); |
5b859b6e | 2877 | } else |
9c4a7965 | 2878 | list_add_tail(&t_alg->entry, &priv->alg_list); |
9c4a7965 KP |
2879 | } |
2880 | } | |
5b859b6e KP |
2881 | if (!list_empty(&priv->alg_list)) |
2882 | dev_info(dev, "%s algorithms registered in /proc/crypto\n", | |
2883 | (char *)of_get_property(np, "compatible", NULL)); | |
9c4a7965 KP |
2884 | |
2885 | return 0; | |
2886 | ||
2887 | err_out: | |
2888 | talitos_remove(ofdev); | |
9c4a7965 KP |
2889 | |
2890 | return err; | |
2891 | } | |
2892 | ||
6c3f975a | 2893 | static const struct of_device_id talitos_match[] = { |
9c4a7965 KP |
2894 | { |
2895 | .compatible = "fsl,sec2.0", | |
2896 | }, | |
2897 | {}, | |
2898 | }; | |
2899 | MODULE_DEVICE_TABLE(of, talitos_match); | |
2900 | ||
1c48a5c9 | 2901 | static struct platform_driver talitos_driver = { |
4018294b GL |
2902 | .driver = { |
2903 | .name = "talitos", | |
2904 | .owner = THIS_MODULE, | |
2905 | .of_match_table = talitos_match, | |
2906 | }, | |
9c4a7965 | 2907 | .probe = talitos_probe, |
596f1034 | 2908 | .remove = talitos_remove, |
9c4a7965 KP |
2909 | }; |
2910 | ||
741e8c2d | 2911 | module_platform_driver(talitos_driver); |
9c4a7965 KP |
2912 | |
2913 | MODULE_LICENSE("GPL"); | |
2914 | MODULE_AUTHOR("Kim Phillips <kim.phillips@freescale.com>"); | |
2915 | MODULE_DESCRIPTION("Freescale integrated security engine (SEC) driver"); |