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