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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> | |
5af50730 RH |
35 | #include <linux/of_address.h> |
36 | #include <linux/of_irq.h> | |
9c4a7965 KP |
37 | #include <linux/of_platform.h> |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/io.h> | |
40 | #include <linux/spinlock.h> | |
41 | #include <linux/rtnetlink.h> | |
5a0e3ad6 | 42 | #include <linux/slab.h> |
9c4a7965 KP |
43 | |
44 | #include <crypto/algapi.h> | |
45 | #include <crypto/aes.h> | |
3952f17e | 46 | #include <crypto/des.h> |
9c4a7965 | 47 | #include <crypto/sha.h> |
497f2e6b | 48 | #include <crypto/md5.h> |
9c4a7965 KP |
49 | #include <crypto/aead.h> |
50 | #include <crypto/authenc.h> | |
4de9d0b5 | 51 | #include <crypto/skcipher.h> |
acbf7c62 LN |
52 | #include <crypto/hash.h> |
53 | #include <crypto/internal/hash.h> | |
4de9d0b5 | 54 | #include <crypto/scatterwalk.h> |
9c4a7965 KP |
55 | |
56 | #include "talitos.h" | |
57 | ||
81eb024c KP |
58 | static void to_talitos_ptr(struct talitos_ptr *talitos_ptr, dma_addr_t dma_addr) |
59 | { | |
60 | talitos_ptr->ptr = cpu_to_be32(lower_32_bits(dma_addr)); | |
a752447a | 61 | talitos_ptr->eptr = upper_32_bits(dma_addr); |
81eb024c KP |
62 | } |
63 | ||
9c4a7965 KP |
64 | /* |
65 | * map virtual single (contiguous) pointer to h/w descriptor pointer | |
66 | */ | |
67 | static void map_single_talitos_ptr(struct device *dev, | |
68 | struct talitos_ptr *talitos_ptr, | |
69 | unsigned short len, void *data, | |
70 | unsigned char extent, | |
71 | enum dma_data_direction dir) | |
72 | { | |
81eb024c KP |
73 | dma_addr_t dma_addr = dma_map_single(dev, data, len, dir); |
74 | ||
9c4a7965 | 75 | talitos_ptr->len = cpu_to_be16(len); |
81eb024c | 76 | to_talitos_ptr(talitos_ptr, dma_addr); |
9c4a7965 KP |
77 | talitos_ptr->j_extent = extent; |
78 | } | |
79 | ||
80 | /* | |
81 | * unmap bus single (contiguous) h/w descriptor pointer | |
82 | */ | |
83 | static void unmap_single_talitos_ptr(struct device *dev, | |
84 | struct talitos_ptr *talitos_ptr, | |
85 | enum dma_data_direction dir) | |
86 | { | |
87 | dma_unmap_single(dev, be32_to_cpu(talitos_ptr->ptr), | |
88 | be16_to_cpu(talitos_ptr->len), dir); | |
89 | } | |
90 | ||
91 | static int reset_channel(struct device *dev, int ch) | |
92 | { | |
93 | struct talitos_private *priv = dev_get_drvdata(dev); | |
94 | unsigned int timeout = TALITOS_TIMEOUT; | |
95 | ||
ad42d5fc | 96 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, TALITOS_CCCR_RESET); |
9c4a7965 | 97 | |
ad42d5fc | 98 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & TALITOS_CCCR_RESET) |
9c4a7965 KP |
99 | && --timeout) |
100 | cpu_relax(); | |
101 | ||
102 | if (timeout == 0) { | |
103 | dev_err(dev, "failed to reset channel %d\n", ch); | |
104 | return -EIO; | |
105 | } | |
106 | ||
81eb024c | 107 | /* set 36-bit addressing, done writeback enable and done IRQ enable */ |
ad42d5fc | 108 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, TALITOS_CCCR_LO_EAE | |
81eb024c | 109 | TALITOS_CCCR_LO_CDWE | TALITOS_CCCR_LO_CDIE); |
9c4a7965 | 110 | |
fe5720e2 KP |
111 | /* and ICCR writeback, if available */ |
112 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
ad42d5fc | 113 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, |
fe5720e2 KP |
114 | TALITOS_CCCR_LO_IWSE); |
115 | ||
9c4a7965 KP |
116 | return 0; |
117 | } | |
118 | ||
119 | static int reset_device(struct device *dev) | |
120 | { | |
121 | struct talitos_private *priv = dev_get_drvdata(dev); | |
122 | unsigned int timeout = TALITOS_TIMEOUT; | |
c3e337f8 | 123 | u32 mcr = TALITOS_MCR_SWR; |
9c4a7965 | 124 | |
c3e337f8 | 125 | setbits32(priv->reg + TALITOS_MCR, mcr); |
9c4a7965 KP |
126 | |
127 | while ((in_be32(priv->reg + TALITOS_MCR) & TALITOS_MCR_SWR) | |
128 | && --timeout) | |
129 | cpu_relax(); | |
130 | ||
2cdba3cf | 131 | if (priv->irq[1]) { |
c3e337f8 KP |
132 | mcr = TALITOS_MCR_RCA1 | TALITOS_MCR_RCA3; |
133 | setbits32(priv->reg + TALITOS_MCR, mcr); | |
134 | } | |
135 | ||
9c4a7965 KP |
136 | if (timeout == 0) { |
137 | dev_err(dev, "failed to reset device\n"); | |
138 | return -EIO; | |
139 | } | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | /* | |
145 | * Reset and initialize the device | |
146 | */ | |
147 | static int init_device(struct device *dev) | |
148 | { | |
149 | struct talitos_private *priv = dev_get_drvdata(dev); | |
150 | int ch, err; | |
151 | ||
152 | /* | |
153 | * Master reset | |
154 | * errata documentation: warning: certain SEC interrupts | |
155 | * are not fully cleared by writing the MCR:SWR bit, | |
156 | * set bit twice to completely reset | |
157 | */ | |
158 | err = reset_device(dev); | |
159 | if (err) | |
160 | return err; | |
161 | ||
162 | err = reset_device(dev); | |
163 | if (err) | |
164 | return err; | |
165 | ||
166 | /* reset channels */ | |
167 | for (ch = 0; ch < priv->num_channels; ch++) { | |
168 | err = reset_channel(dev, ch); | |
169 | if (err) | |
170 | return err; | |
171 | } | |
172 | ||
173 | /* enable channel done and error interrupts */ | |
174 | setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_INIT); | |
175 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); | |
176 | ||
fe5720e2 KP |
177 | /* disable integrity check error interrupts (use writeback instead) */ |
178 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
179 | setbits32(priv->reg + TALITOS_MDEUICR_LO, | |
180 | TALITOS_MDEUICR_LO_ICE); | |
181 | ||
9c4a7965 KP |
182 | return 0; |
183 | } | |
184 | ||
185 | /** | |
186 | * talitos_submit - submits a descriptor to the device for processing | |
187 | * @dev: the SEC device to be used | |
5228f0f7 | 188 | * @ch: the SEC device channel to be used |
9c4a7965 KP |
189 | * @desc: the descriptor to be processed by the device |
190 | * @callback: whom to call when processing is complete | |
191 | * @context: a handle for use by caller (optional) | |
192 | * | |
193 | * desc must contain valid dma-mapped (bus physical) address pointers. | |
194 | * callback must check err and feedback in descriptor header | |
195 | * for device processing status. | |
196 | */ | |
865d5061 HG |
197 | int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc, |
198 | void (*callback)(struct device *dev, | |
199 | struct talitos_desc *desc, | |
200 | void *context, int error), | |
201 | void *context) | |
9c4a7965 KP |
202 | { |
203 | struct talitos_private *priv = dev_get_drvdata(dev); | |
204 | struct talitos_request *request; | |
5228f0f7 | 205 | unsigned long flags; |
9c4a7965 KP |
206 | int head; |
207 | ||
4b992628 | 208 | spin_lock_irqsave(&priv->chan[ch].head_lock, flags); |
9c4a7965 | 209 | |
4b992628 | 210 | if (!atomic_inc_not_zero(&priv->chan[ch].submit_count)) { |
ec6644d6 | 211 | /* h/w fifo is full */ |
4b992628 | 212 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
213 | return -EAGAIN; |
214 | } | |
215 | ||
4b992628 KP |
216 | head = priv->chan[ch].head; |
217 | request = &priv->chan[ch].fifo[head]; | |
ec6644d6 | 218 | |
9c4a7965 KP |
219 | /* map descriptor and save caller data */ |
220 | request->dma_desc = dma_map_single(dev, desc, sizeof(*desc), | |
221 | DMA_BIDIRECTIONAL); | |
222 | request->callback = callback; | |
223 | request->context = context; | |
224 | ||
225 | /* increment fifo head */ | |
4b992628 | 226 | priv->chan[ch].head = (priv->chan[ch].head + 1) & (priv->fifo_len - 1); |
9c4a7965 KP |
227 | |
228 | smp_wmb(); | |
229 | request->desc = desc; | |
230 | ||
231 | /* GO! */ | |
232 | wmb(); | |
ad42d5fc KP |
233 | out_be32(priv->chan[ch].reg + TALITOS_FF, |
234 | upper_32_bits(request->dma_desc)); | |
235 | out_be32(priv->chan[ch].reg + TALITOS_FF_LO, | |
a752447a | 236 | lower_32_bits(request->dma_desc)); |
9c4a7965 | 237 | |
4b992628 | 238 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
239 | |
240 | return -EINPROGRESS; | |
241 | } | |
865d5061 | 242 | EXPORT_SYMBOL(talitos_submit); |
9c4a7965 KP |
243 | |
244 | /* | |
245 | * process what was done, notify callback of error if not | |
246 | */ | |
247 | static void flush_channel(struct device *dev, int ch, int error, int reset_ch) | |
248 | { | |
249 | struct talitos_private *priv = dev_get_drvdata(dev); | |
250 | struct talitos_request *request, saved_req; | |
251 | unsigned long flags; | |
252 | int tail, status; | |
253 | ||
4b992628 | 254 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
9c4a7965 | 255 | |
4b992628 KP |
256 | tail = priv->chan[ch].tail; |
257 | while (priv->chan[ch].fifo[tail].desc) { | |
258 | request = &priv->chan[ch].fifo[tail]; | |
9c4a7965 KP |
259 | |
260 | /* descriptors with their done bits set don't get the error */ | |
261 | rmb(); | |
ca38a814 | 262 | if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE) |
9c4a7965 | 263 | status = 0; |
ca38a814 | 264 | else |
9c4a7965 KP |
265 | if (!error) |
266 | break; | |
267 | else | |
268 | status = error; | |
269 | ||
270 | dma_unmap_single(dev, request->dma_desc, | |
e938e465 KP |
271 | sizeof(struct talitos_desc), |
272 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
273 | |
274 | /* copy entries so we can call callback outside lock */ | |
275 | saved_req.desc = request->desc; | |
276 | saved_req.callback = request->callback; | |
277 | saved_req.context = request->context; | |
278 | ||
279 | /* release request entry in fifo */ | |
280 | smp_wmb(); | |
281 | request->desc = NULL; | |
282 | ||
283 | /* increment fifo tail */ | |
4b992628 | 284 | priv->chan[ch].tail = (tail + 1) & (priv->fifo_len - 1); |
9c4a7965 | 285 | |
4b992628 | 286 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
ec6644d6 | 287 | |
4b992628 | 288 | atomic_dec(&priv->chan[ch].submit_count); |
ec6644d6 | 289 | |
9c4a7965 KP |
290 | saved_req.callback(dev, saved_req.desc, saved_req.context, |
291 | status); | |
292 | /* channel may resume processing in single desc error case */ | |
293 | if (error && !reset_ch && status == error) | |
294 | return; | |
4b992628 KP |
295 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
296 | tail = priv->chan[ch].tail; | |
9c4a7965 KP |
297 | } |
298 | ||
4b992628 | 299 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
9c4a7965 KP |
300 | } |
301 | ||
302 | /* | |
303 | * process completed requests for channels that have done status | |
304 | */ | |
c3e337f8 KP |
305 | #define DEF_TALITOS_DONE(name, ch_done_mask) \ |
306 | static void talitos_done_##name(unsigned long data) \ | |
307 | { \ | |
308 | struct device *dev = (struct device *)data; \ | |
309 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
511d63cb | 310 | unsigned long flags; \ |
c3e337f8 KP |
311 | \ |
312 | if (ch_done_mask & 1) \ | |
313 | flush_channel(dev, 0, 0, 0); \ | |
314 | if (priv->num_channels == 1) \ | |
315 | goto out; \ | |
316 | if (ch_done_mask & (1 << 2)) \ | |
317 | flush_channel(dev, 1, 0, 0); \ | |
318 | if (ch_done_mask & (1 << 4)) \ | |
319 | flush_channel(dev, 2, 0, 0); \ | |
320 | if (ch_done_mask & (1 << 6)) \ | |
321 | flush_channel(dev, 3, 0, 0); \ | |
322 | \ | |
323 | out: \ | |
324 | /* At this point, all completed channels have been processed */ \ | |
325 | /* Unmask done interrupts for channels completed later on. */ \ | |
511d63cb | 326 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
327 | setbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ |
328 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); \ | |
511d63cb | 329 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
9c4a7965 | 330 | } |
c3e337f8 KP |
331 | DEF_TALITOS_DONE(4ch, TALITOS_ISR_4CHDONE) |
332 | DEF_TALITOS_DONE(ch0_2, TALITOS_ISR_CH_0_2_DONE) | |
333 | DEF_TALITOS_DONE(ch1_3, TALITOS_ISR_CH_1_3_DONE) | |
9c4a7965 KP |
334 | |
335 | /* | |
336 | * locate current (offending) descriptor | |
337 | */ | |
3e721aeb | 338 | static u32 current_desc_hdr(struct device *dev, int ch) |
9c4a7965 KP |
339 | { |
340 | struct talitos_private *priv = dev_get_drvdata(dev); | |
b62ffd8c | 341 | int tail, iter; |
9c4a7965 KP |
342 | dma_addr_t cur_desc; |
343 | ||
b62ffd8c HG |
344 | cur_desc = ((u64)in_be32(priv->chan[ch].reg + TALITOS_CDPR)) << 32; |
345 | cur_desc |= in_be32(priv->chan[ch].reg + TALITOS_CDPR_LO); | |
9c4a7965 | 346 | |
b62ffd8c HG |
347 | if (!cur_desc) { |
348 | dev_err(dev, "CDPR is NULL, giving up search for offending descriptor\n"); | |
349 | return 0; | |
350 | } | |
351 | ||
352 | tail = priv->chan[ch].tail; | |
353 | ||
354 | iter = tail; | |
355 | while (priv->chan[ch].fifo[iter].dma_desc != cur_desc) { | |
356 | iter = (iter + 1) & (priv->fifo_len - 1); | |
357 | if (iter == tail) { | |
9c4a7965 | 358 | dev_err(dev, "couldn't locate current descriptor\n"); |
3e721aeb | 359 | return 0; |
9c4a7965 KP |
360 | } |
361 | } | |
362 | ||
b62ffd8c | 363 | return priv->chan[ch].fifo[iter].desc->hdr; |
9c4a7965 KP |
364 | } |
365 | ||
366 | /* | |
367 | * user diagnostics; report root cause of error based on execution unit status | |
368 | */ | |
3e721aeb | 369 | static void report_eu_error(struct device *dev, int ch, u32 desc_hdr) |
9c4a7965 KP |
370 | { |
371 | struct talitos_private *priv = dev_get_drvdata(dev); | |
372 | int i; | |
373 | ||
3e721aeb | 374 | if (!desc_hdr) |
ad42d5fc | 375 | desc_hdr = in_be32(priv->chan[ch].reg + TALITOS_DESCBUF); |
3e721aeb KP |
376 | |
377 | switch (desc_hdr & DESC_HDR_SEL0_MASK) { | |
9c4a7965 KP |
378 | case DESC_HDR_SEL0_AFEU: |
379 | dev_err(dev, "AFEUISR 0x%08x_%08x\n", | |
380 | in_be32(priv->reg + TALITOS_AFEUISR), | |
381 | in_be32(priv->reg + TALITOS_AFEUISR_LO)); | |
382 | break; | |
383 | case DESC_HDR_SEL0_DEU: | |
384 | dev_err(dev, "DEUISR 0x%08x_%08x\n", | |
385 | in_be32(priv->reg + TALITOS_DEUISR), | |
386 | in_be32(priv->reg + TALITOS_DEUISR_LO)); | |
387 | break; | |
388 | case DESC_HDR_SEL0_MDEUA: | |
389 | case DESC_HDR_SEL0_MDEUB: | |
390 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
391 | in_be32(priv->reg + TALITOS_MDEUISR), | |
392 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
393 | break; | |
394 | case DESC_HDR_SEL0_RNG: | |
395 | dev_err(dev, "RNGUISR 0x%08x_%08x\n", | |
396 | in_be32(priv->reg + TALITOS_RNGUISR), | |
397 | in_be32(priv->reg + TALITOS_RNGUISR_LO)); | |
398 | break; | |
399 | case DESC_HDR_SEL0_PKEU: | |
400 | dev_err(dev, "PKEUISR 0x%08x_%08x\n", | |
401 | in_be32(priv->reg + TALITOS_PKEUISR), | |
402 | in_be32(priv->reg + TALITOS_PKEUISR_LO)); | |
403 | break; | |
404 | case DESC_HDR_SEL0_AESU: | |
405 | dev_err(dev, "AESUISR 0x%08x_%08x\n", | |
406 | in_be32(priv->reg + TALITOS_AESUISR), | |
407 | in_be32(priv->reg + TALITOS_AESUISR_LO)); | |
408 | break; | |
409 | case DESC_HDR_SEL0_CRCU: | |
410 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
411 | in_be32(priv->reg + TALITOS_CRCUISR), | |
412 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
413 | break; | |
414 | case DESC_HDR_SEL0_KEU: | |
415 | dev_err(dev, "KEUISR 0x%08x_%08x\n", | |
416 | in_be32(priv->reg + TALITOS_KEUISR), | |
417 | in_be32(priv->reg + TALITOS_KEUISR_LO)); | |
418 | break; | |
419 | } | |
420 | ||
3e721aeb | 421 | switch (desc_hdr & DESC_HDR_SEL1_MASK) { |
9c4a7965 KP |
422 | case DESC_HDR_SEL1_MDEUA: |
423 | case DESC_HDR_SEL1_MDEUB: | |
424 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
425 | in_be32(priv->reg + TALITOS_MDEUISR), | |
426 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
427 | break; | |
428 | case DESC_HDR_SEL1_CRCU: | |
429 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
430 | in_be32(priv->reg + TALITOS_CRCUISR), | |
431 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
432 | break; | |
433 | } | |
434 | ||
435 | for (i = 0; i < 8; i++) | |
436 | dev_err(dev, "DESCBUF 0x%08x_%08x\n", | |
ad42d5fc KP |
437 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF + 8*i), |
438 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF_LO + 8*i)); | |
9c4a7965 KP |
439 | } |
440 | ||
441 | /* | |
442 | * recover from error interrupts | |
443 | */ | |
5e718a09 | 444 | static void talitos_error(struct device *dev, u32 isr, u32 isr_lo) |
9c4a7965 | 445 | { |
9c4a7965 KP |
446 | struct talitos_private *priv = dev_get_drvdata(dev); |
447 | unsigned int timeout = TALITOS_TIMEOUT; | |
448 | int ch, error, reset_dev = 0, reset_ch = 0; | |
40405f10 | 449 | u32 v, v_lo; |
9c4a7965 KP |
450 | |
451 | for (ch = 0; ch < priv->num_channels; ch++) { | |
452 | /* skip channels without errors */ | |
453 | if (!(isr & (1 << (ch * 2 + 1)))) | |
454 | continue; | |
455 | ||
456 | error = -EINVAL; | |
457 | ||
ad42d5fc KP |
458 | v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR); |
459 | v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO); | |
9c4a7965 KP |
460 | |
461 | if (v_lo & TALITOS_CCPSR_LO_DOF) { | |
462 | dev_err(dev, "double fetch fifo overflow error\n"); | |
463 | error = -EAGAIN; | |
464 | reset_ch = 1; | |
465 | } | |
466 | if (v_lo & TALITOS_CCPSR_LO_SOF) { | |
467 | /* h/w dropped descriptor */ | |
468 | dev_err(dev, "single fetch fifo overflow error\n"); | |
469 | error = -EAGAIN; | |
470 | } | |
471 | if (v_lo & TALITOS_CCPSR_LO_MDTE) | |
472 | dev_err(dev, "master data transfer error\n"); | |
473 | if (v_lo & TALITOS_CCPSR_LO_SGDLZ) | |
474 | dev_err(dev, "s/g data length zero error\n"); | |
475 | if (v_lo & TALITOS_CCPSR_LO_FPZ) | |
476 | dev_err(dev, "fetch pointer zero error\n"); | |
477 | if (v_lo & TALITOS_CCPSR_LO_IDH) | |
478 | dev_err(dev, "illegal descriptor header error\n"); | |
479 | if (v_lo & TALITOS_CCPSR_LO_IEU) | |
480 | dev_err(dev, "invalid execution unit error\n"); | |
481 | if (v_lo & TALITOS_CCPSR_LO_EU) | |
3e721aeb | 482 | report_eu_error(dev, ch, current_desc_hdr(dev, ch)); |
9c4a7965 KP |
483 | if (v_lo & TALITOS_CCPSR_LO_GB) |
484 | dev_err(dev, "gather boundary error\n"); | |
485 | if (v_lo & TALITOS_CCPSR_LO_GRL) | |
486 | dev_err(dev, "gather return/length error\n"); | |
487 | if (v_lo & TALITOS_CCPSR_LO_SB) | |
488 | dev_err(dev, "scatter boundary error\n"); | |
489 | if (v_lo & TALITOS_CCPSR_LO_SRL) | |
490 | dev_err(dev, "scatter return/length error\n"); | |
491 | ||
492 | flush_channel(dev, ch, error, reset_ch); | |
493 | ||
494 | if (reset_ch) { | |
495 | reset_channel(dev, ch); | |
496 | } else { | |
ad42d5fc | 497 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, |
9c4a7965 | 498 | TALITOS_CCCR_CONT); |
ad42d5fc KP |
499 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, 0); |
500 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & | |
9c4a7965 KP |
501 | TALITOS_CCCR_CONT) && --timeout) |
502 | cpu_relax(); | |
503 | if (timeout == 0) { | |
504 | dev_err(dev, "failed to restart channel %d\n", | |
505 | ch); | |
506 | reset_dev = 1; | |
507 | } | |
508 | } | |
509 | } | |
c3e337f8 | 510 | if (reset_dev || isr & ~TALITOS_ISR_4CHERR || isr_lo) { |
9c4a7965 KP |
511 | dev_err(dev, "done overflow, internal time out, or rngu error: " |
512 | "ISR 0x%08x_%08x\n", isr, isr_lo); | |
513 | ||
514 | /* purge request queues */ | |
515 | for (ch = 0; ch < priv->num_channels; ch++) | |
516 | flush_channel(dev, ch, -EIO, 1); | |
517 | ||
518 | /* reset and reinitialize the device */ | |
519 | init_device(dev); | |
520 | } | |
521 | } | |
522 | ||
c3e337f8 KP |
523 | #define DEF_TALITOS_INTERRUPT(name, ch_done_mask, ch_err_mask, tlet) \ |
524 | static irqreturn_t talitos_interrupt_##name(int irq, void *data) \ | |
525 | { \ | |
526 | struct device *dev = data; \ | |
527 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
528 | u32 isr, isr_lo; \ | |
511d63cb | 529 | unsigned long flags; \ |
c3e337f8 | 530 | \ |
511d63cb | 531 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
532 | isr = in_be32(priv->reg + TALITOS_ISR); \ |
533 | isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); \ | |
534 | /* Acknowledge interrupt */ \ | |
535 | out_be32(priv->reg + TALITOS_ICR, isr & (ch_done_mask | ch_err_mask)); \ | |
536 | out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); \ | |
537 | \ | |
511d63cb HG |
538 | if (unlikely(isr & ch_err_mask || isr_lo)) { \ |
539 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ | |
540 | talitos_error(dev, isr & ch_err_mask, isr_lo); \ | |
541 | } \ | |
542 | else { \ | |
c3e337f8 KP |
543 | if (likely(isr & ch_done_mask)) { \ |
544 | /* mask further done interrupts. */ \ | |
545 | clrbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ | |
546 | /* done_task will unmask done interrupts at exit */ \ | |
547 | tasklet_schedule(&priv->done_task[tlet]); \ | |
548 | } \ | |
511d63cb HG |
549 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
550 | } \ | |
c3e337f8 KP |
551 | \ |
552 | return (isr & (ch_done_mask | ch_err_mask) || isr_lo) ? IRQ_HANDLED : \ | |
553 | IRQ_NONE; \ | |
9c4a7965 | 554 | } |
c3e337f8 KP |
555 | DEF_TALITOS_INTERRUPT(4ch, TALITOS_ISR_4CHDONE, TALITOS_ISR_4CHERR, 0) |
556 | DEF_TALITOS_INTERRUPT(ch0_2, TALITOS_ISR_CH_0_2_DONE, TALITOS_ISR_CH_0_2_ERR, 0) | |
557 | DEF_TALITOS_INTERRUPT(ch1_3, TALITOS_ISR_CH_1_3_DONE, TALITOS_ISR_CH_1_3_ERR, 1) | |
9c4a7965 KP |
558 | |
559 | /* | |
560 | * hwrng | |
561 | */ | |
562 | static int talitos_rng_data_present(struct hwrng *rng, int wait) | |
563 | { | |
564 | struct device *dev = (struct device *)rng->priv; | |
565 | struct talitos_private *priv = dev_get_drvdata(dev); | |
566 | u32 ofl; | |
567 | int i; | |
568 | ||
569 | for (i = 0; i < 20; i++) { | |
570 | ofl = in_be32(priv->reg + TALITOS_RNGUSR_LO) & | |
571 | TALITOS_RNGUSR_LO_OFL; | |
572 | if (ofl || !wait) | |
573 | break; | |
574 | udelay(10); | |
575 | } | |
576 | ||
577 | return !!ofl; | |
578 | } | |
579 | ||
580 | static int talitos_rng_data_read(struct hwrng *rng, u32 *data) | |
581 | { | |
582 | struct device *dev = (struct device *)rng->priv; | |
583 | struct talitos_private *priv = dev_get_drvdata(dev); | |
584 | ||
585 | /* rng fifo requires 64-bit accesses */ | |
586 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO); | |
587 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO_LO); | |
588 | ||
589 | return sizeof(u32); | |
590 | } | |
591 | ||
592 | static int talitos_rng_init(struct hwrng *rng) | |
593 | { | |
594 | struct device *dev = (struct device *)rng->priv; | |
595 | struct talitos_private *priv = dev_get_drvdata(dev); | |
596 | unsigned int timeout = TALITOS_TIMEOUT; | |
597 | ||
598 | setbits32(priv->reg + TALITOS_RNGURCR_LO, TALITOS_RNGURCR_LO_SR); | |
599 | while (!(in_be32(priv->reg + TALITOS_RNGUSR_LO) & TALITOS_RNGUSR_LO_RD) | |
600 | && --timeout) | |
601 | cpu_relax(); | |
602 | if (timeout == 0) { | |
603 | dev_err(dev, "failed to reset rng hw\n"); | |
604 | return -ENODEV; | |
605 | } | |
606 | ||
607 | /* start generating */ | |
608 | setbits32(priv->reg + TALITOS_RNGUDSR_LO, 0); | |
609 | ||
610 | return 0; | |
611 | } | |
612 | ||
613 | static int talitos_register_rng(struct device *dev) | |
614 | { | |
615 | struct talitos_private *priv = dev_get_drvdata(dev); | |
616 | ||
617 | priv->rng.name = dev_driver_string(dev), | |
618 | priv->rng.init = talitos_rng_init, | |
619 | priv->rng.data_present = talitos_rng_data_present, | |
620 | priv->rng.data_read = talitos_rng_data_read, | |
621 | priv->rng.priv = (unsigned long)dev; | |
622 | ||
623 | return hwrng_register(&priv->rng); | |
624 | } | |
625 | ||
626 | static void talitos_unregister_rng(struct device *dev) | |
627 | { | |
628 | struct talitos_private *priv = dev_get_drvdata(dev); | |
629 | ||
630 | hwrng_unregister(&priv->rng); | |
631 | } | |
632 | ||
633 | /* | |
634 | * crypto alg | |
635 | */ | |
636 | #define TALITOS_CRA_PRIORITY 3000 | |
357fb605 | 637 | #define TALITOS_MAX_KEY_SIZE 96 |
3952f17e | 638 | #define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */ |
70bcaca7 | 639 | |
497f2e6b | 640 | #define MD5_BLOCK_SIZE 64 |
9c4a7965 KP |
641 | |
642 | struct talitos_ctx { | |
643 | struct device *dev; | |
5228f0f7 | 644 | int ch; |
9c4a7965 KP |
645 | __be32 desc_hdr_template; |
646 | u8 key[TALITOS_MAX_KEY_SIZE]; | |
70bcaca7 | 647 | u8 iv[TALITOS_MAX_IV_LENGTH]; |
9c4a7965 KP |
648 | unsigned int keylen; |
649 | unsigned int enckeylen; | |
650 | unsigned int authkeylen; | |
651 | unsigned int authsize; | |
652 | }; | |
653 | ||
497f2e6b LN |
654 | #define HASH_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE |
655 | #define TALITOS_MDEU_MAX_CONTEXT_SIZE TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512 | |
656 | ||
657 | struct talitos_ahash_req_ctx { | |
60f208d7 | 658 | u32 hw_context[TALITOS_MDEU_MAX_CONTEXT_SIZE / sizeof(u32)]; |
497f2e6b LN |
659 | unsigned int hw_context_size; |
660 | u8 buf[HASH_MAX_BLOCK_SIZE]; | |
661 | u8 bufnext[HASH_MAX_BLOCK_SIZE]; | |
60f208d7 | 662 | unsigned int swinit; |
497f2e6b LN |
663 | unsigned int first; |
664 | unsigned int last; | |
665 | unsigned int to_hash_later; | |
5e833bc4 | 666 | u64 nbuf; |
497f2e6b LN |
667 | struct scatterlist bufsl[2]; |
668 | struct scatterlist *psrc; | |
669 | }; | |
670 | ||
56af8cd4 LN |
671 | static int aead_setauthsize(struct crypto_aead *authenc, |
672 | unsigned int authsize) | |
9c4a7965 KP |
673 | { |
674 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
675 | ||
676 | ctx->authsize = authsize; | |
677 | ||
678 | return 0; | |
679 | } | |
680 | ||
56af8cd4 LN |
681 | static int aead_setkey(struct crypto_aead *authenc, |
682 | const u8 *key, unsigned int keylen) | |
9c4a7965 KP |
683 | { |
684 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
c306a98d | 685 | struct crypto_authenc_keys keys; |
9c4a7965 | 686 | |
c306a98d | 687 | if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) |
9c4a7965 KP |
688 | goto badkey; |
689 | ||
c306a98d | 690 | if (keys.authkeylen + keys.enckeylen > TALITOS_MAX_KEY_SIZE) |
9c4a7965 KP |
691 | goto badkey; |
692 | ||
c306a98d MK |
693 | memcpy(ctx->key, keys.authkey, keys.authkeylen); |
694 | memcpy(&ctx->key[keys.authkeylen], keys.enckey, keys.enckeylen); | |
9c4a7965 | 695 | |
c306a98d MK |
696 | ctx->keylen = keys.authkeylen + keys.enckeylen; |
697 | ctx->enckeylen = keys.enckeylen; | |
698 | ctx->authkeylen = keys.authkeylen; | |
9c4a7965 KP |
699 | |
700 | return 0; | |
701 | ||
702 | badkey: | |
703 | crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
704 | return -EINVAL; | |
705 | } | |
706 | ||
707 | /* | |
56af8cd4 | 708 | * talitos_edesc - s/w-extended descriptor |
79fd31d3 | 709 | * @assoc_nents: number of segments in associated data scatterlist |
9c4a7965 KP |
710 | * @src_nents: number of segments in input scatterlist |
711 | * @dst_nents: number of segments in output scatterlist | |
79fd31d3 | 712 | * @assoc_chained: whether assoc is chained or not |
2a1cfe46 HG |
713 | * @src_chained: whether src is chained or not |
714 | * @dst_chained: whether dst is chained or not | |
79fd31d3 | 715 | * @iv_dma: dma address of iv for checking continuity and link table |
9c4a7965 KP |
716 | * @dma_len: length of dma mapped link_tbl space |
717 | * @dma_link_tbl: bus physical address of link_tbl | |
718 | * @desc: h/w descriptor | |
719 | * @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1) | |
720 | * | |
721 | * if decrypting (with authcheck), or either one of src_nents or dst_nents | |
722 | * is greater than 1, an integrity check value is concatenated to the end | |
723 | * of link_tbl data | |
724 | */ | |
56af8cd4 | 725 | struct talitos_edesc { |
79fd31d3 | 726 | int assoc_nents; |
9c4a7965 KP |
727 | int src_nents; |
728 | int dst_nents; | |
79fd31d3 | 729 | bool assoc_chained; |
2a1cfe46 HG |
730 | bool src_chained; |
731 | bool dst_chained; | |
79fd31d3 | 732 | dma_addr_t iv_dma; |
9c4a7965 KP |
733 | int dma_len; |
734 | dma_addr_t dma_link_tbl; | |
735 | struct talitos_desc desc; | |
736 | struct talitos_ptr link_tbl[0]; | |
737 | }; | |
738 | ||
4de9d0b5 LN |
739 | static int talitos_map_sg(struct device *dev, struct scatterlist *sg, |
740 | unsigned int nents, enum dma_data_direction dir, | |
2a1cfe46 | 741 | bool chained) |
4de9d0b5 LN |
742 | { |
743 | if (unlikely(chained)) | |
744 | while (sg) { | |
745 | dma_map_sg(dev, sg, 1, dir); | |
746 | sg = scatterwalk_sg_next(sg); | |
747 | } | |
748 | else | |
749 | dma_map_sg(dev, sg, nents, dir); | |
750 | return nents; | |
751 | } | |
752 | ||
753 | static void talitos_unmap_sg_chain(struct device *dev, struct scatterlist *sg, | |
754 | enum dma_data_direction dir) | |
755 | { | |
756 | while (sg) { | |
757 | dma_unmap_sg(dev, sg, 1, dir); | |
758 | sg = scatterwalk_sg_next(sg); | |
759 | } | |
760 | } | |
761 | ||
762 | static void talitos_sg_unmap(struct device *dev, | |
763 | struct talitos_edesc *edesc, | |
764 | struct scatterlist *src, | |
765 | struct scatterlist *dst) | |
766 | { | |
767 | unsigned int src_nents = edesc->src_nents ? : 1; | |
768 | unsigned int dst_nents = edesc->dst_nents ? : 1; | |
769 | ||
770 | if (src != dst) { | |
2a1cfe46 | 771 | if (edesc->src_chained) |
4de9d0b5 LN |
772 | talitos_unmap_sg_chain(dev, src, DMA_TO_DEVICE); |
773 | else | |
774 | dma_unmap_sg(dev, src, src_nents, DMA_TO_DEVICE); | |
775 | ||
497f2e6b | 776 | if (dst) { |
2a1cfe46 | 777 | if (edesc->dst_chained) |
497f2e6b LN |
778 | talitos_unmap_sg_chain(dev, dst, |
779 | DMA_FROM_DEVICE); | |
780 | else | |
781 | dma_unmap_sg(dev, dst, dst_nents, | |
782 | DMA_FROM_DEVICE); | |
783 | } | |
4de9d0b5 | 784 | } else |
2a1cfe46 | 785 | if (edesc->src_chained) |
4de9d0b5 LN |
786 | talitos_unmap_sg_chain(dev, src, DMA_BIDIRECTIONAL); |
787 | else | |
788 | dma_unmap_sg(dev, src, src_nents, DMA_BIDIRECTIONAL); | |
789 | } | |
790 | ||
9c4a7965 | 791 | static void ipsec_esp_unmap(struct device *dev, |
56af8cd4 | 792 | struct talitos_edesc *edesc, |
9c4a7965 KP |
793 | struct aead_request *areq) |
794 | { | |
795 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[6], DMA_FROM_DEVICE); | |
796 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[3], DMA_TO_DEVICE); | |
797 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE); | |
798 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[0], DMA_TO_DEVICE); | |
799 | ||
79fd31d3 HG |
800 | if (edesc->assoc_chained) |
801 | talitos_unmap_sg_chain(dev, areq->assoc, DMA_TO_DEVICE); | |
935e99a3 | 802 | else if (areq->assoclen) |
79fd31d3 HG |
803 | /* assoc_nents counts also for IV in non-contiguous cases */ |
804 | dma_unmap_sg(dev, areq->assoc, | |
805 | edesc->assoc_nents ? edesc->assoc_nents - 1 : 1, | |
806 | DMA_TO_DEVICE); | |
9c4a7965 | 807 | |
4de9d0b5 | 808 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); |
9c4a7965 KP |
809 | |
810 | if (edesc->dma_len) | |
811 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
812 | DMA_BIDIRECTIONAL); | |
813 | } | |
814 | ||
815 | /* | |
816 | * ipsec_esp descriptor callbacks | |
817 | */ | |
818 | static void ipsec_esp_encrypt_done(struct device *dev, | |
819 | struct talitos_desc *desc, void *context, | |
820 | int err) | |
821 | { | |
822 | struct aead_request *areq = context; | |
9c4a7965 KP |
823 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); |
824 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 825 | struct talitos_edesc *edesc; |
9c4a7965 KP |
826 | struct scatterlist *sg; |
827 | void *icvdata; | |
828 | ||
19bbbc63 KP |
829 | edesc = container_of(desc, struct talitos_edesc, desc); |
830 | ||
9c4a7965 KP |
831 | ipsec_esp_unmap(dev, edesc, areq); |
832 | ||
833 | /* copy the generated ICV to dst */ | |
60542505 | 834 | if (edesc->dst_nents) { |
9c4a7965 | 835 | icvdata = &edesc->link_tbl[edesc->src_nents + |
79fd31d3 HG |
836 | edesc->dst_nents + 2 + |
837 | edesc->assoc_nents]; | |
9c4a7965 KP |
838 | sg = sg_last(areq->dst, edesc->dst_nents); |
839 | memcpy((char *)sg_virt(sg) + sg->length - ctx->authsize, | |
840 | icvdata, ctx->authsize); | |
841 | } | |
842 | ||
843 | kfree(edesc); | |
844 | ||
845 | aead_request_complete(areq, err); | |
846 | } | |
847 | ||
fe5720e2 | 848 | static void ipsec_esp_decrypt_swauth_done(struct device *dev, |
e938e465 KP |
849 | struct talitos_desc *desc, |
850 | void *context, int err) | |
9c4a7965 KP |
851 | { |
852 | struct aead_request *req = context; | |
9c4a7965 KP |
853 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
854 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 855 | struct talitos_edesc *edesc; |
9c4a7965 KP |
856 | struct scatterlist *sg; |
857 | void *icvdata; | |
858 | ||
19bbbc63 KP |
859 | edesc = container_of(desc, struct talitos_edesc, desc); |
860 | ||
9c4a7965 KP |
861 | ipsec_esp_unmap(dev, edesc, req); |
862 | ||
863 | if (!err) { | |
864 | /* auth check */ | |
865 | if (edesc->dma_len) | |
866 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
79fd31d3 HG |
867 | edesc->dst_nents + 2 + |
868 | edesc->assoc_nents]; | |
9c4a7965 KP |
869 | else |
870 | icvdata = &edesc->link_tbl[0]; | |
871 | ||
872 | sg = sg_last(req->dst, edesc->dst_nents ? : 1); | |
873 | err = memcmp(icvdata, (char *)sg_virt(sg) + sg->length - | |
874 | ctx->authsize, ctx->authsize) ? -EBADMSG : 0; | |
875 | } | |
876 | ||
877 | kfree(edesc); | |
878 | ||
879 | aead_request_complete(req, err); | |
880 | } | |
881 | ||
fe5720e2 | 882 | static void ipsec_esp_decrypt_hwauth_done(struct device *dev, |
e938e465 KP |
883 | struct talitos_desc *desc, |
884 | void *context, int err) | |
fe5720e2 KP |
885 | { |
886 | struct aead_request *req = context; | |
19bbbc63 KP |
887 | struct talitos_edesc *edesc; |
888 | ||
889 | edesc = container_of(desc, struct talitos_edesc, desc); | |
fe5720e2 KP |
890 | |
891 | ipsec_esp_unmap(dev, edesc, req); | |
892 | ||
893 | /* check ICV auth status */ | |
e938e465 KP |
894 | if (!err && ((desc->hdr_lo & DESC_HDR_LO_ICCR1_MASK) != |
895 | DESC_HDR_LO_ICCR1_PASS)) | |
896 | err = -EBADMSG; | |
fe5720e2 KP |
897 | |
898 | kfree(edesc); | |
899 | ||
900 | aead_request_complete(req, err); | |
901 | } | |
902 | ||
9c4a7965 KP |
903 | /* |
904 | * convert scatterlist to SEC h/w link table format | |
905 | * stop at cryptlen bytes | |
906 | */ | |
70bcaca7 | 907 | static int sg_to_link_tbl(struct scatterlist *sg, int sg_count, |
9c4a7965 KP |
908 | int cryptlen, struct talitos_ptr *link_tbl_ptr) |
909 | { | |
70bcaca7 LN |
910 | int n_sg = sg_count; |
911 | ||
912 | while (n_sg--) { | |
81eb024c | 913 | to_talitos_ptr(link_tbl_ptr, sg_dma_address(sg)); |
9c4a7965 KP |
914 | link_tbl_ptr->len = cpu_to_be16(sg_dma_len(sg)); |
915 | link_tbl_ptr->j_extent = 0; | |
916 | link_tbl_ptr++; | |
917 | cryptlen -= sg_dma_len(sg); | |
4de9d0b5 | 918 | sg = scatterwalk_sg_next(sg); |
9c4a7965 KP |
919 | } |
920 | ||
70bcaca7 | 921 | /* adjust (decrease) last one (or two) entry's len to cryptlen */ |
9c4a7965 | 922 | link_tbl_ptr--; |
c0e741d4 | 923 | while (be16_to_cpu(link_tbl_ptr->len) <= (-cryptlen)) { |
70bcaca7 LN |
924 | /* Empty this entry, and move to previous one */ |
925 | cryptlen += be16_to_cpu(link_tbl_ptr->len); | |
926 | link_tbl_ptr->len = 0; | |
927 | sg_count--; | |
928 | link_tbl_ptr--; | |
929 | } | |
7291a932 | 930 | be16_add_cpu(&link_tbl_ptr->len, cryptlen); |
9c4a7965 KP |
931 | |
932 | /* tag end of link table */ | |
933 | link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
70bcaca7 LN |
934 | |
935 | return sg_count; | |
9c4a7965 KP |
936 | } |
937 | ||
938 | /* | |
939 | * fill in and submit ipsec_esp descriptor | |
940 | */ | |
56af8cd4 | 941 | static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, |
79fd31d3 HG |
942 | u64 seq, void (*callback) (struct device *dev, |
943 | struct talitos_desc *desc, | |
944 | void *context, int error)) | |
9c4a7965 KP |
945 | { |
946 | struct crypto_aead *aead = crypto_aead_reqtfm(areq); | |
947 | struct talitos_ctx *ctx = crypto_aead_ctx(aead); | |
948 | struct device *dev = ctx->dev; | |
949 | struct talitos_desc *desc = &edesc->desc; | |
950 | unsigned int cryptlen = areq->cryptlen; | |
951 | unsigned int authsize = ctx->authsize; | |
e41256f1 | 952 | unsigned int ivsize = crypto_aead_ivsize(aead); |
fa86a267 | 953 | int sg_count, ret; |
fe5720e2 | 954 | int sg_link_tbl_len; |
9c4a7965 KP |
955 | |
956 | /* hmac key */ | |
957 | map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key, | |
958 | 0, DMA_TO_DEVICE); | |
79fd31d3 | 959 | |
9c4a7965 | 960 | /* hmac data */ |
79fd31d3 HG |
961 | desc->ptr[1].len = cpu_to_be16(areq->assoclen + ivsize); |
962 | if (edesc->assoc_nents) { | |
963 | int tbl_off = edesc->src_nents + edesc->dst_nents + 2; | |
964 | struct talitos_ptr *tbl_ptr = &edesc->link_tbl[tbl_off]; | |
965 | ||
966 | to_talitos_ptr(&desc->ptr[1], edesc->dma_link_tbl + tbl_off * | |
967 | sizeof(struct talitos_ptr)); | |
968 | desc->ptr[1].j_extent = DESC_PTR_LNKTBL_JUMP; | |
969 | ||
970 | /* assoc_nents - 1 entries for assoc, 1 for IV */ | |
971 | sg_count = sg_to_link_tbl(areq->assoc, edesc->assoc_nents - 1, | |
972 | areq->assoclen, tbl_ptr); | |
973 | ||
974 | /* add IV to link table */ | |
975 | tbl_ptr += sg_count - 1; | |
976 | tbl_ptr->j_extent = 0; | |
977 | tbl_ptr++; | |
978 | to_talitos_ptr(tbl_ptr, edesc->iv_dma); | |
979 | tbl_ptr->len = cpu_to_be16(ivsize); | |
980 | tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
981 | ||
982 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, | |
983 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
984 | } else { | |
935e99a3 HG |
985 | if (areq->assoclen) |
986 | to_talitos_ptr(&desc->ptr[1], | |
987 | sg_dma_address(areq->assoc)); | |
988 | else | |
989 | to_talitos_ptr(&desc->ptr[1], edesc->iv_dma); | |
79fd31d3 HG |
990 | desc->ptr[1].j_extent = 0; |
991 | } | |
992 | ||
9c4a7965 | 993 | /* cipher iv */ |
79fd31d3 HG |
994 | to_talitos_ptr(&desc->ptr[2], edesc->iv_dma); |
995 | desc->ptr[2].len = cpu_to_be16(ivsize); | |
996 | desc->ptr[2].j_extent = 0; | |
997 | /* Sync needed for the aead_givencrypt case */ | |
998 | dma_sync_single_for_device(dev, edesc->iv_dma, ivsize, DMA_TO_DEVICE); | |
9c4a7965 KP |
999 | |
1000 | /* cipher key */ | |
1001 | map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen, | |
1002 | (char *)&ctx->key + ctx->authkeylen, 0, | |
1003 | DMA_TO_DEVICE); | |
1004 | ||
1005 | /* | |
1006 | * cipher in | |
1007 | * map and adjust cipher len to aead request cryptlen. | |
1008 | * extent is bytes of HMAC postpended to ciphertext, | |
1009 | * typically 12 for ipsec | |
1010 | */ | |
1011 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
1012 | desc->ptr[4].j_extent = authsize; | |
1013 | ||
e938e465 KP |
1014 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, |
1015 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
1016 | : DMA_TO_DEVICE, | |
2a1cfe46 | 1017 | edesc->src_chained); |
9c4a7965 KP |
1018 | |
1019 | if (sg_count == 1) { | |
81eb024c | 1020 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->src)); |
9c4a7965 | 1021 | } else { |
fe5720e2 KP |
1022 | sg_link_tbl_len = cryptlen; |
1023 | ||
962a9c99 | 1024 | if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV) |
fe5720e2 | 1025 | sg_link_tbl_len = cryptlen + authsize; |
e938e465 | 1026 | |
fe5720e2 | 1027 | sg_count = sg_to_link_tbl(areq->src, sg_count, sg_link_tbl_len, |
70bcaca7 LN |
1028 | &edesc->link_tbl[0]); |
1029 | if (sg_count > 1) { | |
1030 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
81eb024c | 1031 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl); |
e938e465 KP |
1032 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
1033 | edesc->dma_len, | |
1034 | DMA_BIDIRECTIONAL); | |
70bcaca7 LN |
1035 | } else { |
1036 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
1037 | to_talitos_ptr(&desc->ptr[4], |
1038 | sg_dma_address(areq->src)); | |
70bcaca7 | 1039 | } |
9c4a7965 KP |
1040 | } |
1041 | ||
1042 | /* cipher out */ | |
1043 | desc->ptr[5].len = cpu_to_be16(cryptlen); | |
1044 | desc->ptr[5].j_extent = authsize; | |
1045 | ||
e938e465 | 1046 | if (areq->src != areq->dst) |
4de9d0b5 LN |
1047 | sg_count = talitos_map_sg(dev, areq->dst, |
1048 | edesc->dst_nents ? : 1, | |
2a1cfe46 | 1049 | DMA_FROM_DEVICE, edesc->dst_chained); |
9c4a7965 KP |
1050 | |
1051 | if (sg_count == 1) { | |
81eb024c | 1052 | to_talitos_ptr(&desc->ptr[5], sg_dma_address(areq->dst)); |
9c4a7965 | 1053 | } else { |
79fd31d3 HG |
1054 | int tbl_off = edesc->src_nents + 1; |
1055 | struct talitos_ptr *tbl_ptr = &edesc->link_tbl[tbl_off]; | |
9c4a7965 | 1056 | |
81eb024c | 1057 | to_talitos_ptr(&desc->ptr[5], edesc->dma_link_tbl + |
79fd31d3 | 1058 | tbl_off * sizeof(struct talitos_ptr)); |
fe5720e2 | 1059 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
79fd31d3 | 1060 | tbl_ptr); |
fe5720e2 | 1061 | |
f3c85bc1 | 1062 | /* Add an entry to the link table for ICV data */ |
79fd31d3 HG |
1063 | tbl_ptr += sg_count - 1; |
1064 | tbl_ptr->j_extent = 0; | |
1065 | tbl_ptr++; | |
1066 | tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
1067 | tbl_ptr->len = cpu_to_be16(authsize); | |
9c4a7965 KP |
1068 | |
1069 | /* icv data follows link tables */ | |
79fd31d3 HG |
1070 | to_talitos_ptr(tbl_ptr, edesc->dma_link_tbl + |
1071 | (tbl_off + edesc->dst_nents + 1 + | |
1072 | edesc->assoc_nents) * | |
81eb024c | 1073 | sizeof(struct talitos_ptr)); |
9c4a7965 KP |
1074 | desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP; |
1075 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1076 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1077 | } | |
1078 | ||
1079 | /* iv out */ | |
1080 | map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0, | |
1081 | DMA_FROM_DEVICE); | |
1082 | ||
5228f0f7 | 1083 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
fa86a267 KP |
1084 | if (ret != -EINPROGRESS) { |
1085 | ipsec_esp_unmap(dev, edesc, areq); | |
1086 | kfree(edesc); | |
1087 | } | |
1088 | return ret; | |
9c4a7965 KP |
1089 | } |
1090 | ||
9c4a7965 KP |
1091 | /* |
1092 | * derive number of elements in scatterlist | |
1093 | */ | |
2a1cfe46 | 1094 | static int sg_count(struct scatterlist *sg_list, int nbytes, bool *chained) |
9c4a7965 KP |
1095 | { |
1096 | struct scatterlist *sg = sg_list; | |
1097 | int sg_nents = 0; | |
1098 | ||
2a1cfe46 | 1099 | *chained = false; |
4de9d0b5 | 1100 | while (nbytes > 0) { |
9c4a7965 KP |
1101 | sg_nents++; |
1102 | nbytes -= sg->length; | |
4de9d0b5 | 1103 | if (!sg_is_last(sg) && (sg + 1)->length == 0) |
2a1cfe46 | 1104 | *chained = true; |
4de9d0b5 | 1105 | sg = scatterwalk_sg_next(sg); |
9c4a7965 KP |
1106 | } |
1107 | ||
1108 | return sg_nents; | |
1109 | } | |
1110 | ||
1111 | /* | |
56af8cd4 | 1112 | * allocate and map the extended descriptor |
9c4a7965 | 1113 | */ |
4de9d0b5 | 1114 | static struct talitos_edesc *talitos_edesc_alloc(struct device *dev, |
79fd31d3 | 1115 | struct scatterlist *assoc, |
4de9d0b5 LN |
1116 | struct scatterlist *src, |
1117 | struct scatterlist *dst, | |
79fd31d3 HG |
1118 | u8 *iv, |
1119 | unsigned int assoclen, | |
4de9d0b5 LN |
1120 | unsigned int cryptlen, |
1121 | unsigned int authsize, | |
79fd31d3 | 1122 | unsigned int ivsize, |
4de9d0b5 | 1123 | int icv_stashing, |
62293a37 HG |
1124 | u32 cryptoflags, |
1125 | bool encrypt) | |
9c4a7965 | 1126 | { |
56af8cd4 | 1127 | struct talitos_edesc *edesc; |
79fd31d3 HG |
1128 | int assoc_nents = 0, src_nents, dst_nents, alloc_len, dma_len; |
1129 | bool assoc_chained = false, src_chained = false, dst_chained = false; | |
1130 | dma_addr_t iv_dma = 0; | |
4de9d0b5 | 1131 | gfp_t flags = cryptoflags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : |
586725f8 | 1132 | GFP_ATOMIC; |
9c4a7965 | 1133 | |
4de9d0b5 LN |
1134 | if (cryptlen + authsize > TALITOS_MAX_DATA_LEN) { |
1135 | dev_err(dev, "length exceeds h/w max limit\n"); | |
9c4a7965 KP |
1136 | return ERR_PTR(-EINVAL); |
1137 | } | |
1138 | ||
935e99a3 | 1139 | if (ivsize) |
79fd31d3 HG |
1140 | iv_dma = dma_map_single(dev, iv, ivsize, DMA_TO_DEVICE); |
1141 | ||
935e99a3 | 1142 | if (assoclen) { |
79fd31d3 HG |
1143 | /* |
1144 | * Currently it is assumed that iv is provided whenever assoc | |
1145 | * is. | |
1146 | */ | |
1147 | BUG_ON(!iv); | |
1148 | ||
1149 | assoc_nents = sg_count(assoc, assoclen, &assoc_chained); | |
1150 | talitos_map_sg(dev, assoc, assoc_nents, DMA_TO_DEVICE, | |
1151 | assoc_chained); | |
1152 | assoc_nents = (assoc_nents == 1) ? 0 : assoc_nents; | |
1153 | ||
1154 | if (assoc_nents || sg_dma_address(assoc) + assoclen != iv_dma) | |
1155 | assoc_nents = assoc_nents ? assoc_nents + 1 : 2; | |
1156 | } | |
1157 | ||
62293a37 HG |
1158 | if (!dst || dst == src) { |
1159 | src_nents = sg_count(src, cryptlen + authsize, &src_chained); | |
1160 | src_nents = (src_nents == 1) ? 0 : src_nents; | |
1161 | dst_nents = dst ? src_nents : 0; | |
1162 | } else { /* dst && dst != src*/ | |
1163 | src_nents = sg_count(src, cryptlen + (encrypt ? 0 : authsize), | |
1164 | &src_chained); | |
1165 | src_nents = (src_nents == 1) ? 0 : src_nents; | |
1166 | dst_nents = sg_count(dst, cryptlen + (encrypt ? authsize : 0), | |
1167 | &dst_chained); | |
1168 | dst_nents = (dst_nents == 1) ? 0 : dst_nents; | |
9c4a7965 KP |
1169 | } |
1170 | ||
1171 | /* | |
1172 | * allocate space for base edesc plus the link tables, | |
f3c85bc1 | 1173 | * allowing for two separate entries for ICV and generated ICV (+ 2), |
9c4a7965 KP |
1174 | * and the ICV data itself |
1175 | */ | |
56af8cd4 | 1176 | alloc_len = sizeof(struct talitos_edesc); |
79fd31d3 HG |
1177 | if (assoc_nents || src_nents || dst_nents) { |
1178 | dma_len = (src_nents + dst_nents + 2 + assoc_nents) * | |
1179 | sizeof(struct talitos_ptr) + authsize; | |
9c4a7965 KP |
1180 | alloc_len += dma_len; |
1181 | } else { | |
1182 | dma_len = 0; | |
4de9d0b5 | 1183 | alloc_len += icv_stashing ? authsize : 0; |
9c4a7965 KP |
1184 | } |
1185 | ||
586725f8 | 1186 | edesc = kmalloc(alloc_len, GFP_DMA | flags); |
9c4a7965 | 1187 | if (!edesc) { |
935e99a3 HG |
1188 | if (assoc_chained) |
1189 | talitos_unmap_sg_chain(dev, assoc, DMA_TO_DEVICE); | |
1190 | else if (assoclen) | |
1191 | dma_unmap_sg(dev, assoc, | |
1192 | assoc_nents ? assoc_nents - 1 : 1, | |
1193 | DMA_TO_DEVICE); | |
1194 | ||
79fd31d3 HG |
1195 | if (iv_dma) |
1196 | dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE); | |
935e99a3 | 1197 | |
4de9d0b5 | 1198 | dev_err(dev, "could not allocate edescriptor\n"); |
9c4a7965 KP |
1199 | return ERR_PTR(-ENOMEM); |
1200 | } | |
1201 | ||
79fd31d3 | 1202 | edesc->assoc_nents = assoc_nents; |
9c4a7965 KP |
1203 | edesc->src_nents = src_nents; |
1204 | edesc->dst_nents = dst_nents; | |
79fd31d3 | 1205 | edesc->assoc_chained = assoc_chained; |
2a1cfe46 HG |
1206 | edesc->src_chained = src_chained; |
1207 | edesc->dst_chained = dst_chained; | |
79fd31d3 | 1208 | edesc->iv_dma = iv_dma; |
9c4a7965 | 1209 | edesc->dma_len = dma_len; |
497f2e6b LN |
1210 | if (dma_len) |
1211 | edesc->dma_link_tbl = dma_map_single(dev, &edesc->link_tbl[0], | |
1212 | edesc->dma_len, | |
1213 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
1214 | |
1215 | return edesc; | |
1216 | } | |
1217 | ||
79fd31d3 | 1218 | static struct talitos_edesc *aead_edesc_alloc(struct aead_request *areq, u8 *iv, |
62293a37 | 1219 | int icv_stashing, bool encrypt) |
4de9d0b5 LN |
1220 | { |
1221 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1222 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
79fd31d3 | 1223 | unsigned int ivsize = crypto_aead_ivsize(authenc); |
4de9d0b5 | 1224 | |
79fd31d3 HG |
1225 | return talitos_edesc_alloc(ctx->dev, areq->assoc, areq->src, areq->dst, |
1226 | iv, areq->assoclen, areq->cryptlen, | |
1227 | ctx->authsize, ivsize, icv_stashing, | |
62293a37 | 1228 | areq->base.flags, encrypt); |
4de9d0b5 LN |
1229 | } |
1230 | ||
56af8cd4 | 1231 | static int aead_encrypt(struct aead_request *req) |
9c4a7965 KP |
1232 | { |
1233 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
1234 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1235 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1236 | |
1237 | /* allocate extended descriptor */ | |
62293a37 | 1238 | edesc = aead_edesc_alloc(req, req->iv, 0, true); |
9c4a7965 KP |
1239 | if (IS_ERR(edesc)) |
1240 | return PTR_ERR(edesc); | |
1241 | ||
1242 | /* set encrypt */ | |
70bcaca7 | 1243 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 | 1244 | |
79fd31d3 | 1245 | return ipsec_esp(edesc, req, 0, ipsec_esp_encrypt_done); |
9c4a7965 KP |
1246 | } |
1247 | ||
56af8cd4 | 1248 | static int aead_decrypt(struct aead_request *req) |
9c4a7965 KP |
1249 | { |
1250 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
1251 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
1252 | unsigned int authsize = ctx->authsize; | |
fe5720e2 | 1253 | struct talitos_private *priv = dev_get_drvdata(ctx->dev); |
56af8cd4 | 1254 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1255 | struct scatterlist *sg; |
1256 | void *icvdata; | |
1257 | ||
1258 | req->cryptlen -= authsize; | |
1259 | ||
1260 | /* allocate extended descriptor */ | |
62293a37 | 1261 | edesc = aead_edesc_alloc(req, req->iv, 1, false); |
9c4a7965 KP |
1262 | if (IS_ERR(edesc)) |
1263 | return PTR_ERR(edesc); | |
1264 | ||
fe5720e2 | 1265 | if ((priv->features & TALITOS_FTR_HW_AUTH_CHECK) && |
e938e465 KP |
1266 | ((!edesc->src_nents && !edesc->dst_nents) || |
1267 | priv->features & TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT)) { | |
9c4a7965 | 1268 | |
fe5720e2 | 1269 | /* decrypt and check the ICV */ |
e938e465 KP |
1270 | edesc->desc.hdr = ctx->desc_hdr_template | |
1271 | DESC_HDR_DIR_INBOUND | | |
fe5720e2 | 1272 | DESC_HDR_MODE1_MDEU_CICV; |
9c4a7965 | 1273 | |
fe5720e2 KP |
1274 | /* reset integrity check result bits */ |
1275 | edesc->desc.hdr_lo = 0; | |
9c4a7965 | 1276 | |
79fd31d3 | 1277 | return ipsec_esp(edesc, req, 0, ipsec_esp_decrypt_hwauth_done); |
e938e465 | 1278 | } |
fe5720e2 | 1279 | |
e938e465 KP |
1280 | /* Have to check the ICV with software */ |
1281 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
fe5720e2 | 1282 | |
e938e465 KP |
1283 | /* stash incoming ICV for later cmp with ICV generated by the h/w */ |
1284 | if (edesc->dma_len) | |
1285 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
79fd31d3 HG |
1286 | edesc->dst_nents + 2 + |
1287 | edesc->assoc_nents]; | |
e938e465 KP |
1288 | else |
1289 | icvdata = &edesc->link_tbl[0]; | |
fe5720e2 | 1290 | |
e938e465 | 1291 | sg = sg_last(req->src, edesc->src_nents ? : 1); |
fe5720e2 | 1292 | |
e938e465 KP |
1293 | memcpy(icvdata, (char *)sg_virt(sg) + sg->length - ctx->authsize, |
1294 | ctx->authsize); | |
fe5720e2 | 1295 | |
79fd31d3 | 1296 | return ipsec_esp(edesc, req, 0, ipsec_esp_decrypt_swauth_done); |
9c4a7965 KP |
1297 | } |
1298 | ||
56af8cd4 | 1299 | static int aead_givencrypt(struct aead_givcrypt_request *req) |
9c4a7965 KP |
1300 | { |
1301 | struct aead_request *areq = &req->areq; | |
1302 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1303 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1304 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1305 | |
1306 | /* allocate extended descriptor */ | |
62293a37 | 1307 | edesc = aead_edesc_alloc(areq, req->giv, 0, true); |
9c4a7965 KP |
1308 | if (IS_ERR(edesc)) |
1309 | return PTR_ERR(edesc); | |
1310 | ||
1311 | /* set encrypt */ | |
70bcaca7 | 1312 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 KP |
1313 | |
1314 | memcpy(req->giv, ctx->iv, crypto_aead_ivsize(authenc)); | |
ba95487d KP |
1315 | /* avoid consecutive packets going out with same IV */ |
1316 | *(__be64 *)req->giv ^= cpu_to_be64(req->seq); | |
9c4a7965 | 1317 | |
79fd31d3 | 1318 | return ipsec_esp(edesc, areq, req->seq, ipsec_esp_encrypt_done); |
9c4a7965 KP |
1319 | } |
1320 | ||
4de9d0b5 LN |
1321 | static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, |
1322 | const u8 *key, unsigned int keylen) | |
1323 | { | |
1324 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
4de9d0b5 LN |
1325 | |
1326 | memcpy(&ctx->key, key, keylen); | |
1327 | ctx->keylen = keylen; | |
1328 | ||
1329 | return 0; | |
4de9d0b5 LN |
1330 | } |
1331 | ||
1332 | static void common_nonsnoop_unmap(struct device *dev, | |
1333 | struct talitos_edesc *edesc, | |
1334 | struct ablkcipher_request *areq) | |
1335 | { | |
1336 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1337 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE); | |
1338 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], DMA_TO_DEVICE); | |
1339 | ||
1340 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); | |
1341 | ||
1342 | if (edesc->dma_len) | |
1343 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1344 | DMA_BIDIRECTIONAL); | |
1345 | } | |
1346 | ||
1347 | static void ablkcipher_done(struct device *dev, | |
1348 | struct talitos_desc *desc, void *context, | |
1349 | int err) | |
1350 | { | |
1351 | struct ablkcipher_request *areq = context; | |
19bbbc63 KP |
1352 | struct talitos_edesc *edesc; |
1353 | ||
1354 | edesc = container_of(desc, struct talitos_edesc, desc); | |
4de9d0b5 LN |
1355 | |
1356 | common_nonsnoop_unmap(dev, edesc, areq); | |
1357 | ||
1358 | kfree(edesc); | |
1359 | ||
1360 | areq->base.complete(&areq->base, err); | |
1361 | } | |
1362 | ||
1363 | static int common_nonsnoop(struct talitos_edesc *edesc, | |
1364 | struct ablkcipher_request *areq, | |
4de9d0b5 LN |
1365 | void (*callback) (struct device *dev, |
1366 | struct talitos_desc *desc, | |
1367 | void *context, int error)) | |
1368 | { | |
1369 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1370 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1371 | struct device *dev = ctx->dev; | |
1372 | struct talitos_desc *desc = &edesc->desc; | |
1373 | unsigned int cryptlen = areq->nbytes; | |
79fd31d3 | 1374 | unsigned int ivsize = crypto_ablkcipher_ivsize(cipher); |
4de9d0b5 LN |
1375 | int sg_count, ret; |
1376 | ||
1377 | /* first DWORD empty */ | |
1378 | desc->ptr[0].len = 0; | |
81eb024c | 1379 | to_talitos_ptr(&desc->ptr[0], 0); |
4de9d0b5 LN |
1380 | desc->ptr[0].j_extent = 0; |
1381 | ||
1382 | /* cipher iv */ | |
79fd31d3 HG |
1383 | to_talitos_ptr(&desc->ptr[1], edesc->iv_dma); |
1384 | desc->ptr[1].len = cpu_to_be16(ivsize); | |
1385 | desc->ptr[1].j_extent = 0; | |
4de9d0b5 LN |
1386 | |
1387 | /* cipher key */ | |
1388 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1389 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1390 | ||
1391 | /* | |
1392 | * cipher in | |
1393 | */ | |
1394 | desc->ptr[3].len = cpu_to_be16(cryptlen); | |
1395 | desc->ptr[3].j_extent = 0; | |
1396 | ||
1397 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, | |
1398 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
1399 | : DMA_TO_DEVICE, | |
2a1cfe46 | 1400 | edesc->src_chained); |
4de9d0b5 LN |
1401 | |
1402 | if (sg_count == 1) { | |
81eb024c | 1403 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(areq->src)); |
4de9d0b5 LN |
1404 | } else { |
1405 | sg_count = sg_to_link_tbl(areq->src, sg_count, cryptlen, | |
1406 | &edesc->link_tbl[0]); | |
1407 | if (sg_count > 1) { | |
81eb024c | 1408 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); |
4de9d0b5 | 1409 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; |
e938e465 KP |
1410 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
1411 | edesc->dma_len, | |
1412 | DMA_BIDIRECTIONAL); | |
4de9d0b5 LN |
1413 | } else { |
1414 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
1415 | to_talitos_ptr(&desc->ptr[3], |
1416 | sg_dma_address(areq->src)); | |
4de9d0b5 LN |
1417 | } |
1418 | } | |
1419 | ||
1420 | /* cipher out */ | |
1421 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
1422 | desc->ptr[4].j_extent = 0; | |
1423 | ||
1424 | if (areq->src != areq->dst) | |
1425 | sg_count = talitos_map_sg(dev, areq->dst, | |
1426 | edesc->dst_nents ? : 1, | |
2a1cfe46 | 1427 | DMA_FROM_DEVICE, edesc->dst_chained); |
4de9d0b5 LN |
1428 | |
1429 | if (sg_count == 1) { | |
81eb024c | 1430 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->dst)); |
4de9d0b5 LN |
1431 | } else { |
1432 | struct talitos_ptr *link_tbl_ptr = | |
1433 | &edesc->link_tbl[edesc->src_nents + 1]; | |
1434 | ||
81eb024c KP |
1435 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl + |
1436 | (edesc->src_nents + 1) * | |
1437 | sizeof(struct talitos_ptr)); | |
4de9d0b5 | 1438 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; |
4de9d0b5 LN |
1439 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
1440 | link_tbl_ptr); | |
1441 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1442 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1443 | } | |
1444 | ||
1445 | /* iv out */ | |
1446 | map_single_talitos_ptr(dev, &desc->ptr[5], ivsize, ctx->iv, 0, | |
1447 | DMA_FROM_DEVICE); | |
1448 | ||
1449 | /* last DWORD empty */ | |
1450 | desc->ptr[6].len = 0; | |
81eb024c | 1451 | to_talitos_ptr(&desc->ptr[6], 0); |
4de9d0b5 LN |
1452 | desc->ptr[6].j_extent = 0; |
1453 | ||
5228f0f7 | 1454 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
4de9d0b5 LN |
1455 | if (ret != -EINPROGRESS) { |
1456 | common_nonsnoop_unmap(dev, edesc, areq); | |
1457 | kfree(edesc); | |
1458 | } | |
1459 | return ret; | |
1460 | } | |
1461 | ||
e938e465 | 1462 | static struct talitos_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request * |
62293a37 | 1463 | areq, bool encrypt) |
4de9d0b5 LN |
1464 | { |
1465 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1466 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
79fd31d3 | 1467 | unsigned int ivsize = crypto_ablkcipher_ivsize(cipher); |
4de9d0b5 | 1468 | |
79fd31d3 HG |
1469 | return talitos_edesc_alloc(ctx->dev, NULL, areq->src, areq->dst, |
1470 | areq->info, 0, areq->nbytes, 0, ivsize, 0, | |
62293a37 | 1471 | areq->base.flags, encrypt); |
4de9d0b5 LN |
1472 | } |
1473 | ||
1474 | static int ablkcipher_encrypt(struct ablkcipher_request *areq) | |
1475 | { | |
1476 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1477 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1478 | struct talitos_edesc *edesc; | |
1479 | ||
1480 | /* allocate extended descriptor */ | |
62293a37 | 1481 | edesc = ablkcipher_edesc_alloc(areq, true); |
4de9d0b5 LN |
1482 | if (IS_ERR(edesc)) |
1483 | return PTR_ERR(edesc); | |
1484 | ||
1485 | /* set encrypt */ | |
1486 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; | |
1487 | ||
febec542 | 1488 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1489 | } |
1490 | ||
1491 | static int ablkcipher_decrypt(struct ablkcipher_request *areq) | |
1492 | { | |
1493 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1494 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1495 | struct talitos_edesc *edesc; | |
1496 | ||
1497 | /* allocate extended descriptor */ | |
62293a37 | 1498 | edesc = ablkcipher_edesc_alloc(areq, false); |
4de9d0b5 LN |
1499 | if (IS_ERR(edesc)) |
1500 | return PTR_ERR(edesc); | |
1501 | ||
1502 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
1503 | ||
febec542 | 1504 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1505 | } |
1506 | ||
497f2e6b LN |
1507 | static void common_nonsnoop_hash_unmap(struct device *dev, |
1508 | struct talitos_edesc *edesc, | |
1509 | struct ahash_request *areq) | |
1510 | { | |
1511 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1512 | ||
1513 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1514 | ||
1515 | /* When using hashctx-in, must unmap it. */ | |
1516 | if (edesc->desc.ptr[1].len) | |
1517 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], | |
1518 | DMA_TO_DEVICE); | |
1519 | ||
1520 | if (edesc->desc.ptr[2].len) | |
1521 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], | |
1522 | DMA_TO_DEVICE); | |
1523 | ||
1524 | talitos_sg_unmap(dev, edesc, req_ctx->psrc, NULL); | |
1525 | ||
1526 | if (edesc->dma_len) | |
1527 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1528 | DMA_BIDIRECTIONAL); | |
1529 | ||
1530 | } | |
1531 | ||
1532 | static void ahash_done(struct device *dev, | |
1533 | struct talitos_desc *desc, void *context, | |
1534 | int err) | |
1535 | { | |
1536 | struct ahash_request *areq = context; | |
1537 | struct talitos_edesc *edesc = | |
1538 | container_of(desc, struct talitos_edesc, desc); | |
1539 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1540 | ||
1541 | if (!req_ctx->last && req_ctx->to_hash_later) { | |
1542 | /* Position any partial block for next update/final/finup */ | |
1543 | memcpy(req_ctx->buf, req_ctx->bufnext, req_ctx->to_hash_later); | |
5e833bc4 | 1544 | req_ctx->nbuf = req_ctx->to_hash_later; |
497f2e6b LN |
1545 | } |
1546 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1547 | ||
1548 | kfree(edesc); | |
1549 | ||
1550 | areq->base.complete(&areq->base, err); | |
1551 | } | |
1552 | ||
1553 | static int common_nonsnoop_hash(struct talitos_edesc *edesc, | |
1554 | struct ahash_request *areq, unsigned int length, | |
1555 | void (*callback) (struct device *dev, | |
1556 | struct talitos_desc *desc, | |
1557 | void *context, int error)) | |
1558 | { | |
1559 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1560 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1561 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1562 | struct device *dev = ctx->dev; | |
1563 | struct talitos_desc *desc = &edesc->desc; | |
1564 | int sg_count, ret; | |
1565 | ||
1566 | /* first DWORD empty */ | |
1567 | desc->ptr[0] = zero_entry; | |
1568 | ||
60f208d7 KP |
1569 | /* hash context in */ |
1570 | if (!req_ctx->first || req_ctx->swinit) { | |
497f2e6b LN |
1571 | map_single_talitos_ptr(dev, &desc->ptr[1], |
1572 | req_ctx->hw_context_size, | |
1573 | (char *)req_ctx->hw_context, 0, | |
1574 | DMA_TO_DEVICE); | |
60f208d7 | 1575 | req_ctx->swinit = 0; |
497f2e6b LN |
1576 | } else { |
1577 | desc->ptr[1] = zero_entry; | |
1578 | /* Indicate next op is not the first. */ | |
1579 | req_ctx->first = 0; | |
1580 | } | |
1581 | ||
1582 | /* HMAC key */ | |
1583 | if (ctx->keylen) | |
1584 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1585 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1586 | else | |
1587 | desc->ptr[2] = zero_entry; | |
1588 | ||
1589 | /* | |
1590 | * data in | |
1591 | */ | |
1592 | desc->ptr[3].len = cpu_to_be16(length); | |
1593 | desc->ptr[3].j_extent = 0; | |
1594 | ||
1595 | sg_count = talitos_map_sg(dev, req_ctx->psrc, | |
1596 | edesc->src_nents ? : 1, | |
2a1cfe46 | 1597 | DMA_TO_DEVICE, edesc->src_chained); |
497f2e6b LN |
1598 | |
1599 | if (sg_count == 1) { | |
1600 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(req_ctx->psrc)); | |
1601 | } else { | |
1602 | sg_count = sg_to_link_tbl(req_ctx->psrc, sg_count, length, | |
1603 | &edesc->link_tbl[0]); | |
1604 | if (sg_count > 1) { | |
1605 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
1606 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); | |
1607 | dma_sync_single_for_device(ctx->dev, | |
1608 | edesc->dma_link_tbl, | |
1609 | edesc->dma_len, | |
1610 | DMA_BIDIRECTIONAL); | |
1611 | } else { | |
1612 | /* Only one segment now, so no link tbl needed */ | |
1613 | to_talitos_ptr(&desc->ptr[3], | |
1614 | sg_dma_address(req_ctx->psrc)); | |
1615 | } | |
1616 | } | |
1617 | ||
1618 | /* fifth DWORD empty */ | |
1619 | desc->ptr[4] = zero_entry; | |
1620 | ||
1621 | /* hash/HMAC out -or- hash context out */ | |
1622 | if (req_ctx->last) | |
1623 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1624 | crypto_ahash_digestsize(tfm), | |
1625 | areq->result, 0, DMA_FROM_DEVICE); | |
1626 | else | |
1627 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1628 | req_ctx->hw_context_size, | |
1629 | req_ctx->hw_context, 0, DMA_FROM_DEVICE); | |
1630 | ||
1631 | /* last DWORD empty */ | |
1632 | desc->ptr[6] = zero_entry; | |
1633 | ||
5228f0f7 | 1634 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
497f2e6b LN |
1635 | if (ret != -EINPROGRESS) { |
1636 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1637 | kfree(edesc); | |
1638 | } | |
1639 | return ret; | |
1640 | } | |
1641 | ||
1642 | static struct talitos_edesc *ahash_edesc_alloc(struct ahash_request *areq, | |
1643 | unsigned int nbytes) | |
1644 | { | |
1645 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1646 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1647 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1648 | ||
79fd31d3 | 1649 | return talitos_edesc_alloc(ctx->dev, NULL, req_ctx->psrc, NULL, NULL, 0, |
62293a37 | 1650 | nbytes, 0, 0, 0, areq->base.flags, false); |
497f2e6b LN |
1651 | } |
1652 | ||
1653 | static int ahash_init(struct ahash_request *areq) | |
1654 | { | |
1655 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1656 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1657 | ||
1658 | /* Initialize the context */ | |
5e833bc4 | 1659 | req_ctx->nbuf = 0; |
60f208d7 KP |
1660 | req_ctx->first = 1; /* first indicates h/w must init its context */ |
1661 | req_ctx->swinit = 0; /* assume h/w init of context */ | |
497f2e6b LN |
1662 | req_ctx->hw_context_size = |
1663 | (crypto_ahash_digestsize(tfm) <= SHA256_DIGEST_SIZE) | |
1664 | ? TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256 | |
1665 | : TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512; | |
1666 | ||
1667 | return 0; | |
1668 | } | |
1669 | ||
60f208d7 KP |
1670 | /* |
1671 | * on h/w without explicit sha224 support, we initialize h/w context | |
1672 | * manually with sha224 constants, and tell it to run sha256. | |
1673 | */ | |
1674 | static int ahash_init_sha224_swinit(struct ahash_request *areq) | |
1675 | { | |
1676 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1677 | ||
1678 | ahash_init(areq); | |
1679 | req_ctx->swinit = 1;/* prevent h/w initting context with sha256 values*/ | |
1680 | ||
a752447a KP |
1681 | req_ctx->hw_context[0] = SHA224_H0; |
1682 | req_ctx->hw_context[1] = SHA224_H1; | |
1683 | req_ctx->hw_context[2] = SHA224_H2; | |
1684 | req_ctx->hw_context[3] = SHA224_H3; | |
1685 | req_ctx->hw_context[4] = SHA224_H4; | |
1686 | req_ctx->hw_context[5] = SHA224_H5; | |
1687 | req_ctx->hw_context[6] = SHA224_H6; | |
1688 | req_ctx->hw_context[7] = SHA224_H7; | |
60f208d7 KP |
1689 | |
1690 | /* init 64-bit count */ | |
1691 | req_ctx->hw_context[8] = 0; | |
1692 | req_ctx->hw_context[9] = 0; | |
1693 | ||
1694 | return 0; | |
1695 | } | |
1696 | ||
497f2e6b LN |
1697 | static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes) |
1698 | { | |
1699 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1700 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1701 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1702 | struct talitos_edesc *edesc; | |
1703 | unsigned int blocksize = | |
1704 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1705 | unsigned int nbytes_to_hash; | |
1706 | unsigned int to_hash_later; | |
5e833bc4 | 1707 | unsigned int nsg; |
2a1cfe46 | 1708 | bool chained; |
497f2e6b | 1709 | |
5e833bc4 LN |
1710 | if (!req_ctx->last && (nbytes + req_ctx->nbuf <= blocksize)) { |
1711 | /* Buffer up to one whole block */ | |
497f2e6b LN |
1712 | sg_copy_to_buffer(areq->src, |
1713 | sg_count(areq->src, nbytes, &chained), | |
5e833bc4 LN |
1714 | req_ctx->buf + req_ctx->nbuf, nbytes); |
1715 | req_ctx->nbuf += nbytes; | |
497f2e6b LN |
1716 | return 0; |
1717 | } | |
1718 | ||
5e833bc4 LN |
1719 | /* At least (blocksize + 1) bytes are available to hash */ |
1720 | nbytes_to_hash = nbytes + req_ctx->nbuf; | |
1721 | to_hash_later = nbytes_to_hash & (blocksize - 1); | |
1722 | ||
1723 | if (req_ctx->last) | |
1724 | to_hash_later = 0; | |
1725 | else if (to_hash_later) | |
1726 | /* There is a partial block. Hash the full block(s) now */ | |
1727 | nbytes_to_hash -= to_hash_later; | |
1728 | else { | |
1729 | /* Keep one block buffered */ | |
1730 | nbytes_to_hash -= blocksize; | |
1731 | to_hash_later = blocksize; | |
1732 | } | |
1733 | ||
1734 | /* Chain in any previously buffered data */ | |
1735 | if (req_ctx->nbuf) { | |
1736 | nsg = (req_ctx->nbuf < nbytes_to_hash) ? 2 : 1; | |
1737 | sg_init_table(req_ctx->bufsl, nsg); | |
1738 | sg_set_buf(req_ctx->bufsl, req_ctx->buf, req_ctx->nbuf); | |
1739 | if (nsg > 1) | |
1740 | scatterwalk_sg_chain(req_ctx->bufsl, 2, areq->src); | |
497f2e6b | 1741 | req_ctx->psrc = req_ctx->bufsl; |
5e833bc4 | 1742 | } else |
497f2e6b | 1743 | req_ctx->psrc = areq->src; |
5e833bc4 LN |
1744 | |
1745 | if (to_hash_later) { | |
1746 | int nents = sg_count(areq->src, nbytes, &chained); | |
d0525723 | 1747 | sg_pcopy_to_buffer(areq->src, nents, |
5e833bc4 LN |
1748 | req_ctx->bufnext, |
1749 | to_hash_later, | |
1750 | nbytes - to_hash_later); | |
497f2e6b | 1751 | } |
5e833bc4 | 1752 | req_ctx->to_hash_later = to_hash_later; |
497f2e6b | 1753 | |
5e833bc4 | 1754 | /* Allocate extended descriptor */ |
497f2e6b LN |
1755 | edesc = ahash_edesc_alloc(areq, nbytes_to_hash); |
1756 | if (IS_ERR(edesc)) | |
1757 | return PTR_ERR(edesc); | |
1758 | ||
1759 | edesc->desc.hdr = ctx->desc_hdr_template; | |
1760 | ||
1761 | /* On last one, request SEC to pad; otherwise continue */ | |
1762 | if (req_ctx->last) | |
1763 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_PAD; | |
1764 | else | |
1765 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_CONT; | |
1766 | ||
60f208d7 KP |
1767 | /* request SEC to INIT hash. */ |
1768 | if (req_ctx->first && !req_ctx->swinit) | |
497f2e6b LN |
1769 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_INIT; |
1770 | ||
1771 | /* When the tfm context has a keylen, it's an HMAC. | |
1772 | * A first or last (ie. not middle) descriptor must request HMAC. | |
1773 | */ | |
1774 | if (ctx->keylen && (req_ctx->first || req_ctx->last)) | |
1775 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_HMAC; | |
1776 | ||
1777 | return common_nonsnoop_hash(edesc, areq, nbytes_to_hash, | |
1778 | ahash_done); | |
1779 | } | |
1780 | ||
1781 | static int ahash_update(struct ahash_request *areq) | |
1782 | { | |
1783 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1784 | ||
1785 | req_ctx->last = 0; | |
1786 | ||
1787 | return ahash_process_req(areq, areq->nbytes); | |
1788 | } | |
1789 | ||
1790 | static int ahash_final(struct ahash_request *areq) | |
1791 | { | |
1792 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1793 | ||
1794 | req_ctx->last = 1; | |
1795 | ||
1796 | return ahash_process_req(areq, 0); | |
1797 | } | |
1798 | ||
1799 | static int ahash_finup(struct ahash_request *areq) | |
1800 | { | |
1801 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1802 | ||
1803 | req_ctx->last = 1; | |
1804 | ||
1805 | return ahash_process_req(areq, areq->nbytes); | |
1806 | } | |
1807 | ||
1808 | static int ahash_digest(struct ahash_request *areq) | |
1809 | { | |
1810 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
60f208d7 | 1811 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(areq); |
497f2e6b | 1812 | |
60f208d7 | 1813 | ahash->init(areq); |
497f2e6b LN |
1814 | req_ctx->last = 1; |
1815 | ||
1816 | return ahash_process_req(areq, areq->nbytes); | |
1817 | } | |
1818 | ||
79b3a418 LN |
1819 | struct keyhash_result { |
1820 | struct completion completion; | |
1821 | int err; | |
1822 | }; | |
1823 | ||
1824 | static void keyhash_complete(struct crypto_async_request *req, int err) | |
1825 | { | |
1826 | struct keyhash_result *res = req->data; | |
1827 | ||
1828 | if (err == -EINPROGRESS) | |
1829 | return; | |
1830 | ||
1831 | res->err = err; | |
1832 | complete(&res->completion); | |
1833 | } | |
1834 | ||
1835 | static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen, | |
1836 | u8 *hash) | |
1837 | { | |
1838 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1839 | ||
1840 | struct scatterlist sg[1]; | |
1841 | struct ahash_request *req; | |
1842 | struct keyhash_result hresult; | |
1843 | int ret; | |
1844 | ||
1845 | init_completion(&hresult.completion); | |
1846 | ||
1847 | req = ahash_request_alloc(tfm, GFP_KERNEL); | |
1848 | if (!req) | |
1849 | return -ENOMEM; | |
1850 | ||
1851 | /* Keep tfm keylen == 0 during hash of the long key */ | |
1852 | ctx->keylen = 0; | |
1853 | ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
1854 | keyhash_complete, &hresult); | |
1855 | ||
1856 | sg_init_one(&sg[0], key, keylen); | |
1857 | ||
1858 | ahash_request_set_crypt(req, sg, hash, keylen); | |
1859 | ret = crypto_ahash_digest(req); | |
1860 | switch (ret) { | |
1861 | case 0: | |
1862 | break; | |
1863 | case -EINPROGRESS: | |
1864 | case -EBUSY: | |
1865 | ret = wait_for_completion_interruptible( | |
1866 | &hresult.completion); | |
1867 | if (!ret) | |
1868 | ret = hresult.err; | |
1869 | break; | |
1870 | default: | |
1871 | break; | |
1872 | } | |
1873 | ahash_request_free(req); | |
1874 | ||
1875 | return ret; | |
1876 | } | |
1877 | ||
1878 | static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key, | |
1879 | unsigned int keylen) | |
1880 | { | |
1881 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1882 | unsigned int blocksize = | |
1883 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1884 | unsigned int digestsize = crypto_ahash_digestsize(tfm); | |
1885 | unsigned int keysize = keylen; | |
1886 | u8 hash[SHA512_DIGEST_SIZE]; | |
1887 | int ret; | |
1888 | ||
1889 | if (keylen <= blocksize) | |
1890 | memcpy(ctx->key, key, keysize); | |
1891 | else { | |
1892 | /* Must get the hash of the long key */ | |
1893 | ret = keyhash(tfm, key, keylen, hash); | |
1894 | ||
1895 | if (ret) { | |
1896 | crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1897 | return -EINVAL; | |
1898 | } | |
1899 | ||
1900 | keysize = digestsize; | |
1901 | memcpy(ctx->key, hash, digestsize); | |
1902 | } | |
1903 | ||
1904 | ctx->keylen = keysize; | |
1905 | ||
1906 | return 0; | |
1907 | } | |
1908 | ||
1909 | ||
9c4a7965 | 1910 | struct talitos_alg_template { |
d5e4aaef LN |
1911 | u32 type; |
1912 | union { | |
1913 | struct crypto_alg crypto; | |
acbf7c62 | 1914 | struct ahash_alg hash; |
d5e4aaef | 1915 | } alg; |
9c4a7965 KP |
1916 | __be32 desc_hdr_template; |
1917 | }; | |
1918 | ||
1919 | static struct talitos_alg_template driver_algs[] = { | |
991155ba | 1920 | /* AEAD algorithms. These use a single-pass ipsec_esp descriptor */ |
d5e4aaef LN |
1921 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1922 | .alg.crypto = { | |
56af8cd4 LN |
1923 | .cra_name = "authenc(hmac(sha1),cbc(aes))", |
1924 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-talitos", | |
1925 | .cra_blocksize = AES_BLOCK_SIZE, | |
1926 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 1927 | .cra_aead = { |
56af8cd4 LN |
1928 | .ivsize = AES_BLOCK_SIZE, |
1929 | .maxauthsize = SHA1_DIGEST_SIZE, | |
1930 | } | |
1931 | }, | |
9c4a7965 KP |
1932 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
1933 | DESC_HDR_SEL0_AESU | | |
1934 | DESC_HDR_MODE0_AESU_CBC | | |
1935 | DESC_HDR_SEL1_MDEUA | | |
1936 | DESC_HDR_MODE1_MDEU_INIT | | |
1937 | DESC_HDR_MODE1_MDEU_PAD | | |
1938 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
70bcaca7 | 1939 | }, |
d5e4aaef LN |
1940 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1941 | .alg.crypto = { | |
56af8cd4 LN |
1942 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", |
1943 | .cra_driver_name = "authenc-hmac-sha1-cbc-3des-talitos", | |
1944 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
1945 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 1946 | .cra_aead = { |
56af8cd4 LN |
1947 | .ivsize = DES3_EDE_BLOCK_SIZE, |
1948 | .maxauthsize = SHA1_DIGEST_SIZE, | |
1949 | } | |
1950 | }, | |
70bcaca7 LN |
1951 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
1952 | DESC_HDR_SEL0_DEU | | |
1953 | DESC_HDR_MODE0_DEU_CBC | | |
1954 | DESC_HDR_MODE0_DEU_3DES | | |
1955 | DESC_HDR_SEL1_MDEUA | | |
1956 | DESC_HDR_MODE1_MDEU_INIT | | |
1957 | DESC_HDR_MODE1_MDEU_PAD | | |
1958 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
3952f17e | 1959 | }, |
357fb605 HG |
1960 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1961 | .alg.crypto = { | |
1962 | .cra_name = "authenc(hmac(sha224),cbc(aes))", | |
1963 | .cra_driver_name = "authenc-hmac-sha224-cbc-aes-talitos", | |
1964 | .cra_blocksize = AES_BLOCK_SIZE, | |
1965 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 1966 | .cra_aead = { |
357fb605 HG |
1967 | .ivsize = AES_BLOCK_SIZE, |
1968 | .maxauthsize = SHA224_DIGEST_SIZE, | |
1969 | } | |
1970 | }, | |
1971 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
1972 | DESC_HDR_SEL0_AESU | | |
1973 | DESC_HDR_MODE0_AESU_CBC | | |
1974 | DESC_HDR_SEL1_MDEUA | | |
1975 | DESC_HDR_MODE1_MDEU_INIT | | |
1976 | DESC_HDR_MODE1_MDEU_PAD | | |
1977 | DESC_HDR_MODE1_MDEU_SHA224_HMAC, | |
1978 | }, | |
1979 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
1980 | .alg.crypto = { | |
1981 | .cra_name = "authenc(hmac(sha224),cbc(des3_ede))", | |
1982 | .cra_driver_name = "authenc-hmac-sha224-cbc-3des-talitos", | |
1983 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
1984 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 1985 | .cra_aead = { |
357fb605 HG |
1986 | .ivsize = DES3_EDE_BLOCK_SIZE, |
1987 | .maxauthsize = SHA224_DIGEST_SIZE, | |
1988 | } | |
1989 | }, | |
1990 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
1991 | DESC_HDR_SEL0_DEU | | |
1992 | DESC_HDR_MODE0_DEU_CBC | | |
1993 | DESC_HDR_MODE0_DEU_3DES | | |
1994 | DESC_HDR_SEL1_MDEUA | | |
1995 | DESC_HDR_MODE1_MDEU_INIT | | |
1996 | DESC_HDR_MODE1_MDEU_PAD | | |
1997 | DESC_HDR_MODE1_MDEU_SHA224_HMAC, | |
1998 | }, | |
d5e4aaef LN |
1999 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2000 | .alg.crypto = { | |
56af8cd4 LN |
2001 | .cra_name = "authenc(hmac(sha256),cbc(aes))", |
2002 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-talitos", | |
2003 | .cra_blocksize = AES_BLOCK_SIZE, | |
2004 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 2005 | .cra_aead = { |
56af8cd4 LN |
2006 | .ivsize = AES_BLOCK_SIZE, |
2007 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2008 | } | |
2009 | }, | |
3952f17e LN |
2010 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2011 | DESC_HDR_SEL0_AESU | | |
2012 | DESC_HDR_MODE0_AESU_CBC | | |
2013 | DESC_HDR_SEL1_MDEUA | | |
2014 | DESC_HDR_MODE1_MDEU_INIT | | |
2015 | DESC_HDR_MODE1_MDEU_PAD | | |
2016 | DESC_HDR_MODE1_MDEU_SHA256_HMAC, | |
2017 | }, | |
d5e4aaef LN |
2018 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2019 | .alg.crypto = { | |
56af8cd4 LN |
2020 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", |
2021 | .cra_driver_name = "authenc-hmac-sha256-cbc-3des-talitos", | |
2022 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2023 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 2024 | .cra_aead = { |
56af8cd4 LN |
2025 | .ivsize = DES3_EDE_BLOCK_SIZE, |
2026 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2027 | } | |
2028 | }, | |
3952f17e LN |
2029 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2030 | DESC_HDR_SEL0_DEU | | |
2031 | DESC_HDR_MODE0_DEU_CBC | | |
2032 | DESC_HDR_MODE0_DEU_3DES | | |
2033 | DESC_HDR_SEL1_MDEUA | | |
2034 | DESC_HDR_MODE1_MDEU_INIT | | |
2035 | DESC_HDR_MODE1_MDEU_PAD | | |
2036 | DESC_HDR_MODE1_MDEU_SHA256_HMAC, | |
2037 | }, | |
d5e4aaef | 2038 | { .type = CRYPTO_ALG_TYPE_AEAD, |
357fb605 HG |
2039 | .alg.crypto = { |
2040 | .cra_name = "authenc(hmac(sha384),cbc(aes))", | |
2041 | .cra_driver_name = "authenc-hmac-sha384-cbc-aes-talitos", | |
2042 | .cra_blocksize = AES_BLOCK_SIZE, | |
2043 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 2044 | .cra_aead = { |
357fb605 HG |
2045 | .ivsize = AES_BLOCK_SIZE, |
2046 | .maxauthsize = SHA384_DIGEST_SIZE, | |
2047 | } | |
2048 | }, | |
2049 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2050 | DESC_HDR_SEL0_AESU | | |
2051 | DESC_HDR_MODE0_AESU_CBC | | |
2052 | DESC_HDR_SEL1_MDEUB | | |
2053 | DESC_HDR_MODE1_MDEU_INIT | | |
2054 | DESC_HDR_MODE1_MDEU_PAD | | |
2055 | DESC_HDR_MODE1_MDEUB_SHA384_HMAC, | |
2056 | }, | |
2057 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2058 | .alg.crypto = { | |
2059 | .cra_name = "authenc(hmac(sha384),cbc(des3_ede))", | |
2060 | .cra_driver_name = "authenc-hmac-sha384-cbc-3des-talitos", | |
2061 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2062 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 2063 | .cra_aead = { |
357fb605 HG |
2064 | .ivsize = DES3_EDE_BLOCK_SIZE, |
2065 | .maxauthsize = SHA384_DIGEST_SIZE, | |
2066 | } | |
2067 | }, | |
2068 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2069 | DESC_HDR_SEL0_DEU | | |
2070 | DESC_HDR_MODE0_DEU_CBC | | |
2071 | DESC_HDR_MODE0_DEU_3DES | | |
2072 | DESC_HDR_SEL1_MDEUB | | |
2073 | DESC_HDR_MODE1_MDEU_INIT | | |
2074 | DESC_HDR_MODE1_MDEU_PAD | | |
2075 | DESC_HDR_MODE1_MDEUB_SHA384_HMAC, | |
2076 | }, | |
2077 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2078 | .alg.crypto = { | |
2079 | .cra_name = "authenc(hmac(sha512),cbc(aes))", | |
2080 | .cra_driver_name = "authenc-hmac-sha512-cbc-aes-talitos", | |
2081 | .cra_blocksize = AES_BLOCK_SIZE, | |
2082 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 2083 | .cra_aead = { |
357fb605 HG |
2084 | .ivsize = AES_BLOCK_SIZE, |
2085 | .maxauthsize = SHA512_DIGEST_SIZE, | |
2086 | } | |
2087 | }, | |
2088 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2089 | DESC_HDR_SEL0_AESU | | |
2090 | DESC_HDR_MODE0_AESU_CBC | | |
2091 | DESC_HDR_SEL1_MDEUB | | |
2092 | DESC_HDR_MODE1_MDEU_INIT | | |
2093 | DESC_HDR_MODE1_MDEU_PAD | | |
2094 | DESC_HDR_MODE1_MDEUB_SHA512_HMAC, | |
2095 | }, | |
2096 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2097 | .alg.crypto = { | |
2098 | .cra_name = "authenc(hmac(sha512),cbc(des3_ede))", | |
2099 | .cra_driver_name = "authenc-hmac-sha512-cbc-3des-talitos", | |
2100 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2101 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
357fb605 | 2102 | .cra_aead = { |
357fb605 HG |
2103 | .ivsize = DES3_EDE_BLOCK_SIZE, |
2104 | .maxauthsize = SHA512_DIGEST_SIZE, | |
2105 | } | |
2106 | }, | |
2107 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2108 | DESC_HDR_SEL0_DEU | | |
2109 | DESC_HDR_MODE0_DEU_CBC | | |
2110 | DESC_HDR_MODE0_DEU_3DES | | |
2111 | DESC_HDR_SEL1_MDEUB | | |
2112 | DESC_HDR_MODE1_MDEU_INIT | | |
2113 | DESC_HDR_MODE1_MDEU_PAD | | |
2114 | DESC_HDR_MODE1_MDEUB_SHA512_HMAC, | |
2115 | }, | |
2116 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
d5e4aaef | 2117 | .alg.crypto = { |
56af8cd4 LN |
2118 | .cra_name = "authenc(hmac(md5),cbc(aes))", |
2119 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-talitos", | |
2120 | .cra_blocksize = AES_BLOCK_SIZE, | |
2121 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 2122 | .cra_aead = { |
56af8cd4 LN |
2123 | .ivsize = AES_BLOCK_SIZE, |
2124 | .maxauthsize = MD5_DIGEST_SIZE, | |
2125 | } | |
2126 | }, | |
3952f17e LN |
2127 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2128 | DESC_HDR_SEL0_AESU | | |
2129 | DESC_HDR_MODE0_AESU_CBC | | |
2130 | DESC_HDR_SEL1_MDEUA | | |
2131 | DESC_HDR_MODE1_MDEU_INIT | | |
2132 | DESC_HDR_MODE1_MDEU_PAD | | |
2133 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
2134 | }, | |
d5e4aaef LN |
2135 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2136 | .alg.crypto = { | |
56af8cd4 LN |
2137 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", |
2138 | .cra_driver_name = "authenc-hmac-md5-cbc-3des-talitos", | |
2139 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2140 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
56af8cd4 | 2141 | .cra_aead = { |
56af8cd4 LN |
2142 | .ivsize = DES3_EDE_BLOCK_SIZE, |
2143 | .maxauthsize = MD5_DIGEST_SIZE, | |
2144 | } | |
2145 | }, | |
3952f17e LN |
2146 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2147 | DESC_HDR_SEL0_DEU | | |
2148 | DESC_HDR_MODE0_DEU_CBC | | |
2149 | DESC_HDR_MODE0_DEU_3DES | | |
2150 | DESC_HDR_SEL1_MDEUA | | |
2151 | DESC_HDR_MODE1_MDEU_INIT | | |
2152 | DESC_HDR_MODE1_MDEU_PAD | | |
2153 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
4de9d0b5 LN |
2154 | }, |
2155 | /* ABLKCIPHER algorithms. */ | |
d5e4aaef LN |
2156 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2157 | .alg.crypto = { | |
4de9d0b5 LN |
2158 | .cra_name = "cbc(aes)", |
2159 | .cra_driver_name = "cbc-aes-talitos", | |
2160 | .cra_blocksize = AES_BLOCK_SIZE, | |
2161 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2162 | CRYPTO_ALG_ASYNC, | |
4de9d0b5 | 2163 | .cra_ablkcipher = { |
4de9d0b5 LN |
2164 | .min_keysize = AES_MIN_KEY_SIZE, |
2165 | .max_keysize = AES_MAX_KEY_SIZE, | |
2166 | .ivsize = AES_BLOCK_SIZE, | |
2167 | } | |
2168 | }, | |
2169 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2170 | DESC_HDR_SEL0_AESU | | |
2171 | DESC_HDR_MODE0_AESU_CBC, | |
2172 | }, | |
d5e4aaef LN |
2173 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2174 | .alg.crypto = { | |
4de9d0b5 LN |
2175 | .cra_name = "cbc(des3_ede)", |
2176 | .cra_driver_name = "cbc-3des-talitos", | |
2177 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2178 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2179 | CRYPTO_ALG_ASYNC, | |
4de9d0b5 | 2180 | .cra_ablkcipher = { |
4de9d0b5 LN |
2181 | .min_keysize = DES3_EDE_KEY_SIZE, |
2182 | .max_keysize = DES3_EDE_KEY_SIZE, | |
2183 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2184 | } | |
2185 | }, | |
2186 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2187 | DESC_HDR_SEL0_DEU | | |
2188 | DESC_HDR_MODE0_DEU_CBC | | |
2189 | DESC_HDR_MODE0_DEU_3DES, | |
497f2e6b LN |
2190 | }, |
2191 | /* AHASH algorithms. */ | |
2192 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2193 | .alg.hash = { | |
497f2e6b LN |
2194 | .halg.digestsize = MD5_DIGEST_SIZE, |
2195 | .halg.base = { | |
2196 | .cra_name = "md5", | |
2197 | .cra_driver_name = "md5-talitos", | |
2198 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2199 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2200 | CRYPTO_ALG_ASYNC, | |
497f2e6b LN |
2201 | } |
2202 | }, | |
2203 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2204 | DESC_HDR_SEL0_MDEUA | | |
2205 | DESC_HDR_MODE0_MDEU_MD5, | |
2206 | }, | |
2207 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2208 | .alg.hash = { | |
497f2e6b LN |
2209 | .halg.digestsize = SHA1_DIGEST_SIZE, |
2210 | .halg.base = { | |
2211 | .cra_name = "sha1", | |
2212 | .cra_driver_name = "sha1-talitos", | |
2213 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2214 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2215 | CRYPTO_ALG_ASYNC, | |
497f2e6b LN |
2216 | } |
2217 | }, | |
2218 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2219 | DESC_HDR_SEL0_MDEUA | | |
2220 | DESC_HDR_MODE0_MDEU_SHA1, | |
2221 | }, | |
60f208d7 KP |
2222 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2223 | .alg.hash = { | |
60f208d7 KP |
2224 | .halg.digestsize = SHA224_DIGEST_SIZE, |
2225 | .halg.base = { | |
2226 | .cra_name = "sha224", | |
2227 | .cra_driver_name = "sha224-talitos", | |
2228 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2229 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2230 | CRYPTO_ALG_ASYNC, | |
60f208d7 KP |
2231 | } |
2232 | }, | |
2233 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2234 | DESC_HDR_SEL0_MDEUA | | |
2235 | DESC_HDR_MODE0_MDEU_SHA224, | |
2236 | }, | |
497f2e6b LN |
2237 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2238 | .alg.hash = { | |
497f2e6b LN |
2239 | .halg.digestsize = SHA256_DIGEST_SIZE, |
2240 | .halg.base = { | |
2241 | .cra_name = "sha256", | |
2242 | .cra_driver_name = "sha256-talitos", | |
2243 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2244 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2245 | CRYPTO_ALG_ASYNC, | |
497f2e6b LN |
2246 | } |
2247 | }, | |
2248 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2249 | DESC_HDR_SEL0_MDEUA | | |
2250 | DESC_HDR_MODE0_MDEU_SHA256, | |
2251 | }, | |
2252 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2253 | .alg.hash = { | |
497f2e6b LN |
2254 | .halg.digestsize = SHA384_DIGEST_SIZE, |
2255 | .halg.base = { | |
2256 | .cra_name = "sha384", | |
2257 | .cra_driver_name = "sha384-talitos", | |
2258 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2259 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2260 | CRYPTO_ALG_ASYNC, | |
497f2e6b LN |
2261 | } |
2262 | }, | |
2263 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2264 | DESC_HDR_SEL0_MDEUB | | |
2265 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2266 | }, | |
2267 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2268 | .alg.hash = { | |
497f2e6b LN |
2269 | .halg.digestsize = SHA512_DIGEST_SIZE, |
2270 | .halg.base = { | |
2271 | .cra_name = "sha512", | |
2272 | .cra_driver_name = "sha512-talitos", | |
2273 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2274 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2275 | CRYPTO_ALG_ASYNC, | |
497f2e6b LN |
2276 | } |
2277 | }, | |
2278 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2279 | DESC_HDR_SEL0_MDEUB | | |
2280 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2281 | }, | |
79b3a418 LN |
2282 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2283 | .alg.hash = { | |
79b3a418 LN |
2284 | .halg.digestsize = MD5_DIGEST_SIZE, |
2285 | .halg.base = { | |
2286 | .cra_name = "hmac(md5)", | |
2287 | .cra_driver_name = "hmac-md5-talitos", | |
2288 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2289 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2290 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2291 | } |
2292 | }, | |
2293 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2294 | DESC_HDR_SEL0_MDEUA | | |
2295 | DESC_HDR_MODE0_MDEU_MD5, | |
2296 | }, | |
2297 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2298 | .alg.hash = { | |
79b3a418 LN |
2299 | .halg.digestsize = SHA1_DIGEST_SIZE, |
2300 | .halg.base = { | |
2301 | .cra_name = "hmac(sha1)", | |
2302 | .cra_driver_name = "hmac-sha1-talitos", | |
2303 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2304 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2305 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2306 | } |
2307 | }, | |
2308 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2309 | DESC_HDR_SEL0_MDEUA | | |
2310 | DESC_HDR_MODE0_MDEU_SHA1, | |
2311 | }, | |
2312 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2313 | .alg.hash = { | |
79b3a418 LN |
2314 | .halg.digestsize = SHA224_DIGEST_SIZE, |
2315 | .halg.base = { | |
2316 | .cra_name = "hmac(sha224)", | |
2317 | .cra_driver_name = "hmac-sha224-talitos", | |
2318 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2319 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2320 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2321 | } |
2322 | }, | |
2323 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2324 | DESC_HDR_SEL0_MDEUA | | |
2325 | DESC_HDR_MODE0_MDEU_SHA224, | |
2326 | }, | |
2327 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2328 | .alg.hash = { | |
79b3a418 LN |
2329 | .halg.digestsize = SHA256_DIGEST_SIZE, |
2330 | .halg.base = { | |
2331 | .cra_name = "hmac(sha256)", | |
2332 | .cra_driver_name = "hmac-sha256-talitos", | |
2333 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2334 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2335 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2336 | } |
2337 | }, | |
2338 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2339 | DESC_HDR_SEL0_MDEUA | | |
2340 | DESC_HDR_MODE0_MDEU_SHA256, | |
2341 | }, | |
2342 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2343 | .alg.hash = { | |
79b3a418 LN |
2344 | .halg.digestsize = SHA384_DIGEST_SIZE, |
2345 | .halg.base = { | |
2346 | .cra_name = "hmac(sha384)", | |
2347 | .cra_driver_name = "hmac-sha384-talitos", | |
2348 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2349 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2350 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2351 | } |
2352 | }, | |
2353 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2354 | DESC_HDR_SEL0_MDEUB | | |
2355 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2356 | }, | |
2357 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2358 | .alg.hash = { | |
79b3a418 LN |
2359 | .halg.digestsize = SHA512_DIGEST_SIZE, |
2360 | .halg.base = { | |
2361 | .cra_name = "hmac(sha512)", | |
2362 | .cra_driver_name = "hmac-sha512-talitos", | |
2363 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2364 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2365 | CRYPTO_ALG_ASYNC, | |
79b3a418 LN |
2366 | } |
2367 | }, | |
2368 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2369 | DESC_HDR_SEL0_MDEUB | | |
2370 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2371 | } | |
9c4a7965 KP |
2372 | }; |
2373 | ||
2374 | struct talitos_crypto_alg { | |
2375 | struct list_head entry; | |
2376 | struct device *dev; | |
acbf7c62 | 2377 | struct talitos_alg_template algt; |
9c4a7965 KP |
2378 | }; |
2379 | ||
2380 | static int talitos_cra_init(struct crypto_tfm *tfm) | |
2381 | { | |
2382 | struct crypto_alg *alg = tfm->__crt_alg; | |
19bbbc63 | 2383 | struct talitos_crypto_alg *talitos_alg; |
9c4a7965 | 2384 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); |
5228f0f7 | 2385 | struct talitos_private *priv; |
9c4a7965 | 2386 | |
497f2e6b LN |
2387 | if ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AHASH) |
2388 | talitos_alg = container_of(__crypto_ahash_alg(alg), | |
2389 | struct talitos_crypto_alg, | |
2390 | algt.alg.hash); | |
2391 | else | |
2392 | talitos_alg = container_of(alg, struct talitos_crypto_alg, | |
2393 | algt.alg.crypto); | |
19bbbc63 | 2394 | |
9c4a7965 KP |
2395 | /* update context with ptr to dev */ |
2396 | ctx->dev = talitos_alg->dev; | |
19bbbc63 | 2397 | |
5228f0f7 KP |
2398 | /* assign SEC channel to tfm in round-robin fashion */ |
2399 | priv = dev_get_drvdata(ctx->dev); | |
2400 | ctx->ch = atomic_inc_return(&priv->last_chan) & | |
2401 | (priv->num_channels - 1); | |
2402 | ||
9c4a7965 | 2403 | /* copy descriptor header template value */ |
acbf7c62 | 2404 | ctx->desc_hdr_template = talitos_alg->algt.desc_hdr_template; |
9c4a7965 | 2405 | |
602dba5a KP |
2406 | /* select done notification */ |
2407 | ctx->desc_hdr_template |= DESC_HDR_DONE_NOTIFY; | |
2408 | ||
497f2e6b LN |
2409 | return 0; |
2410 | } | |
2411 | ||
2412 | static int talitos_cra_init_aead(struct crypto_tfm *tfm) | |
2413 | { | |
2414 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2415 | ||
2416 | talitos_cra_init(tfm); | |
9c4a7965 KP |
2417 | |
2418 | /* random first IV */ | |
70bcaca7 | 2419 | get_random_bytes(ctx->iv, TALITOS_MAX_IV_LENGTH); |
9c4a7965 KP |
2420 | |
2421 | return 0; | |
2422 | } | |
2423 | ||
497f2e6b LN |
2424 | static int talitos_cra_init_ahash(struct crypto_tfm *tfm) |
2425 | { | |
2426 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2427 | ||
2428 | talitos_cra_init(tfm); | |
2429 | ||
2430 | ctx->keylen = 0; | |
2431 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
2432 | sizeof(struct talitos_ahash_req_ctx)); | |
2433 | ||
2434 | return 0; | |
2435 | } | |
2436 | ||
9c4a7965 KP |
2437 | /* |
2438 | * given the alg's descriptor header template, determine whether descriptor | |
2439 | * type and primary/secondary execution units required match the hw | |
2440 | * capabilities description provided in the device tree node. | |
2441 | */ | |
2442 | static int hw_supports(struct device *dev, __be32 desc_hdr_template) | |
2443 | { | |
2444 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2445 | int ret; | |
2446 | ||
2447 | ret = (1 << DESC_TYPE(desc_hdr_template) & priv->desc_types) && | |
2448 | (1 << PRIMARY_EU(desc_hdr_template) & priv->exec_units); | |
2449 | ||
2450 | if (SECONDARY_EU(desc_hdr_template)) | |
2451 | ret = ret && (1 << SECONDARY_EU(desc_hdr_template) | |
2452 | & priv->exec_units); | |
2453 | ||
2454 | return ret; | |
2455 | } | |
2456 | ||
2dc11581 | 2457 | static int talitos_remove(struct platform_device *ofdev) |
9c4a7965 KP |
2458 | { |
2459 | struct device *dev = &ofdev->dev; | |
2460 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2461 | struct talitos_crypto_alg *t_alg, *n; | |
2462 | int i; | |
2463 | ||
2464 | list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) { | |
acbf7c62 LN |
2465 | switch (t_alg->algt.type) { |
2466 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2467 | case CRYPTO_ALG_TYPE_AEAD: | |
2468 | crypto_unregister_alg(&t_alg->algt.alg.crypto); | |
2469 | break; | |
2470 | case CRYPTO_ALG_TYPE_AHASH: | |
2471 | crypto_unregister_ahash(&t_alg->algt.alg.hash); | |
2472 | break; | |
2473 | } | |
9c4a7965 KP |
2474 | list_del(&t_alg->entry); |
2475 | kfree(t_alg); | |
2476 | } | |
2477 | ||
2478 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) | |
2479 | talitos_unregister_rng(dev); | |
2480 | ||
4b992628 | 2481 | for (i = 0; i < priv->num_channels; i++) |
0b798247 | 2482 | kfree(priv->chan[i].fifo); |
9c4a7965 | 2483 | |
4b992628 | 2484 | kfree(priv->chan); |
9c4a7965 | 2485 | |
c3e337f8 | 2486 | for (i = 0; i < 2; i++) |
2cdba3cf | 2487 | if (priv->irq[i]) { |
c3e337f8 KP |
2488 | free_irq(priv->irq[i], dev); |
2489 | irq_dispose_mapping(priv->irq[i]); | |
2490 | } | |
9c4a7965 | 2491 | |
c3e337f8 | 2492 | tasklet_kill(&priv->done_task[0]); |
2cdba3cf | 2493 | if (priv->irq[1]) |
c3e337f8 | 2494 | tasklet_kill(&priv->done_task[1]); |
9c4a7965 KP |
2495 | |
2496 | iounmap(priv->reg); | |
2497 | ||
9c4a7965 KP |
2498 | kfree(priv); |
2499 | ||
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev, | |
2504 | struct talitos_alg_template | |
2505 | *template) | |
2506 | { | |
60f208d7 | 2507 | struct talitos_private *priv = dev_get_drvdata(dev); |
9c4a7965 KP |
2508 | struct talitos_crypto_alg *t_alg; |
2509 | struct crypto_alg *alg; | |
2510 | ||
2511 | t_alg = kzalloc(sizeof(struct talitos_crypto_alg), GFP_KERNEL); | |
2512 | if (!t_alg) | |
2513 | return ERR_PTR(-ENOMEM); | |
2514 | ||
acbf7c62 LN |
2515 | t_alg->algt = *template; |
2516 | ||
2517 | switch (t_alg->algt.type) { | |
2518 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
497f2e6b LN |
2519 | alg = &t_alg->algt.alg.crypto; |
2520 | alg->cra_init = talitos_cra_init; | |
d4cd3283 | 2521 | alg->cra_type = &crypto_ablkcipher_type; |
b286e003 KP |
2522 | alg->cra_ablkcipher.setkey = ablkcipher_setkey; |
2523 | alg->cra_ablkcipher.encrypt = ablkcipher_encrypt; | |
2524 | alg->cra_ablkcipher.decrypt = ablkcipher_decrypt; | |
2525 | alg->cra_ablkcipher.geniv = "eseqiv"; | |
497f2e6b | 2526 | break; |
acbf7c62 LN |
2527 | case CRYPTO_ALG_TYPE_AEAD: |
2528 | alg = &t_alg->algt.alg.crypto; | |
497f2e6b | 2529 | alg->cra_init = talitos_cra_init_aead; |
d4cd3283 | 2530 | alg->cra_type = &crypto_aead_type; |
b286e003 KP |
2531 | alg->cra_aead.setkey = aead_setkey; |
2532 | alg->cra_aead.setauthsize = aead_setauthsize; | |
2533 | alg->cra_aead.encrypt = aead_encrypt; | |
2534 | alg->cra_aead.decrypt = aead_decrypt; | |
2535 | alg->cra_aead.givencrypt = aead_givencrypt; | |
2536 | alg->cra_aead.geniv = "<built-in>"; | |
acbf7c62 LN |
2537 | break; |
2538 | case CRYPTO_ALG_TYPE_AHASH: | |
2539 | alg = &t_alg->algt.alg.hash.halg.base; | |
497f2e6b | 2540 | alg->cra_init = talitos_cra_init_ahash; |
d4cd3283 | 2541 | alg->cra_type = &crypto_ahash_type; |
b286e003 KP |
2542 | t_alg->algt.alg.hash.init = ahash_init; |
2543 | t_alg->algt.alg.hash.update = ahash_update; | |
2544 | t_alg->algt.alg.hash.final = ahash_final; | |
2545 | t_alg->algt.alg.hash.finup = ahash_finup; | |
2546 | t_alg->algt.alg.hash.digest = ahash_digest; | |
2547 | t_alg->algt.alg.hash.setkey = ahash_setkey; | |
2548 | ||
79b3a418 | 2549 | if (!(priv->features & TALITOS_FTR_HMAC_OK) && |
0b2730d8 KP |
2550 | !strncmp(alg->cra_name, "hmac", 4)) { |
2551 | kfree(t_alg); | |
79b3a418 | 2552 | return ERR_PTR(-ENOTSUPP); |
0b2730d8 | 2553 | } |
60f208d7 | 2554 | if (!(priv->features & TALITOS_FTR_SHA224_HWINIT) && |
79b3a418 LN |
2555 | (!strcmp(alg->cra_name, "sha224") || |
2556 | !strcmp(alg->cra_name, "hmac(sha224)"))) { | |
60f208d7 KP |
2557 | t_alg->algt.alg.hash.init = ahash_init_sha224_swinit; |
2558 | t_alg->algt.desc_hdr_template = | |
2559 | DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2560 | DESC_HDR_SEL0_MDEUA | | |
2561 | DESC_HDR_MODE0_MDEU_SHA256; | |
2562 | } | |
497f2e6b | 2563 | break; |
1d11911a KP |
2564 | default: |
2565 | dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type); | |
2566 | return ERR_PTR(-EINVAL); | |
acbf7c62 | 2567 | } |
9c4a7965 | 2568 | |
9c4a7965 | 2569 | alg->cra_module = THIS_MODULE; |
9c4a7965 | 2570 | alg->cra_priority = TALITOS_CRA_PRIORITY; |
9c4a7965 | 2571 | alg->cra_alignmask = 0; |
9c4a7965 | 2572 | alg->cra_ctxsize = sizeof(struct talitos_ctx); |
d912bb76 | 2573 | alg->cra_flags |= CRYPTO_ALG_KERN_DRIVER_ONLY; |
9c4a7965 | 2574 | |
9c4a7965 KP |
2575 | t_alg->dev = dev; |
2576 | ||
2577 | return t_alg; | |
2578 | } | |
2579 | ||
c3e337f8 KP |
2580 | static int talitos_probe_irq(struct platform_device *ofdev) |
2581 | { | |
2582 | struct device *dev = &ofdev->dev; | |
2583 | struct device_node *np = ofdev->dev.of_node; | |
2584 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2585 | int err; | |
2586 | ||
2587 | priv->irq[0] = irq_of_parse_and_map(np, 0); | |
2cdba3cf | 2588 | if (!priv->irq[0]) { |
c3e337f8 KP |
2589 | dev_err(dev, "failed to map irq\n"); |
2590 | return -EINVAL; | |
2591 | } | |
2592 | ||
2593 | priv->irq[1] = irq_of_parse_and_map(np, 1); | |
2594 | ||
2595 | /* get the primary irq line */ | |
2cdba3cf | 2596 | if (!priv->irq[1]) { |
c3e337f8 KP |
2597 | err = request_irq(priv->irq[0], talitos_interrupt_4ch, 0, |
2598 | dev_driver_string(dev), dev); | |
2599 | goto primary_out; | |
2600 | } | |
2601 | ||
2602 | err = request_irq(priv->irq[0], talitos_interrupt_ch0_2, 0, | |
2603 | dev_driver_string(dev), dev); | |
2604 | if (err) | |
2605 | goto primary_out; | |
2606 | ||
2607 | /* get the secondary irq line */ | |
2608 | err = request_irq(priv->irq[1], talitos_interrupt_ch1_3, 0, | |
2609 | dev_driver_string(dev), dev); | |
2610 | if (err) { | |
2611 | dev_err(dev, "failed to request secondary irq\n"); | |
2612 | irq_dispose_mapping(priv->irq[1]); | |
2cdba3cf | 2613 | priv->irq[1] = 0; |
c3e337f8 KP |
2614 | } |
2615 | ||
2616 | return err; | |
2617 | ||
2618 | primary_out: | |
2619 | if (err) { | |
2620 | dev_err(dev, "failed to request primary irq\n"); | |
2621 | irq_dispose_mapping(priv->irq[0]); | |
2cdba3cf | 2622 | priv->irq[0] = 0; |
c3e337f8 KP |
2623 | } |
2624 | ||
2625 | return err; | |
2626 | } | |
2627 | ||
1c48a5c9 | 2628 | static int talitos_probe(struct platform_device *ofdev) |
9c4a7965 KP |
2629 | { |
2630 | struct device *dev = &ofdev->dev; | |
61c7a080 | 2631 | struct device_node *np = ofdev->dev.of_node; |
9c4a7965 KP |
2632 | struct talitos_private *priv; |
2633 | const unsigned int *prop; | |
2634 | int i, err; | |
2635 | ||
2636 | priv = kzalloc(sizeof(struct talitos_private), GFP_KERNEL); | |
2637 | if (!priv) | |
2638 | return -ENOMEM; | |
2639 | ||
f3de9cb1 KH |
2640 | INIT_LIST_HEAD(&priv->alg_list); |
2641 | ||
9c4a7965 KP |
2642 | dev_set_drvdata(dev, priv); |
2643 | ||
2644 | priv->ofdev = ofdev; | |
2645 | ||
511d63cb HG |
2646 | spin_lock_init(&priv->reg_lock); |
2647 | ||
c3e337f8 KP |
2648 | err = talitos_probe_irq(ofdev); |
2649 | if (err) | |
9c4a7965 | 2650 | goto err_out; |
9c4a7965 | 2651 | |
2cdba3cf | 2652 | if (!priv->irq[1]) { |
c3e337f8 KP |
2653 | tasklet_init(&priv->done_task[0], talitos_done_4ch, |
2654 | (unsigned long)dev); | |
2655 | } else { | |
2656 | tasklet_init(&priv->done_task[0], talitos_done_ch0_2, | |
2657 | (unsigned long)dev); | |
2658 | tasklet_init(&priv->done_task[1], talitos_done_ch1_3, | |
2659 | (unsigned long)dev); | |
9c4a7965 KP |
2660 | } |
2661 | ||
2662 | priv->reg = of_iomap(np, 0); | |
2663 | if (!priv->reg) { | |
2664 | dev_err(dev, "failed to of_iomap\n"); | |
2665 | err = -ENOMEM; | |
2666 | goto err_out; | |
2667 | } | |
2668 | ||
2669 | /* get SEC version capabilities from device tree */ | |
2670 | prop = of_get_property(np, "fsl,num-channels", NULL); | |
2671 | if (prop) | |
2672 | priv->num_channels = *prop; | |
2673 | ||
2674 | prop = of_get_property(np, "fsl,channel-fifo-len", NULL); | |
2675 | if (prop) | |
2676 | priv->chfifo_len = *prop; | |
2677 | ||
2678 | prop = of_get_property(np, "fsl,exec-units-mask", NULL); | |
2679 | if (prop) | |
2680 | priv->exec_units = *prop; | |
2681 | ||
2682 | prop = of_get_property(np, "fsl,descriptor-types-mask", NULL); | |
2683 | if (prop) | |
2684 | priv->desc_types = *prop; | |
2685 | ||
2686 | if (!is_power_of_2(priv->num_channels) || !priv->chfifo_len || | |
2687 | !priv->exec_units || !priv->desc_types) { | |
2688 | dev_err(dev, "invalid property data in device tree node\n"); | |
2689 | err = -EINVAL; | |
2690 | goto err_out; | |
2691 | } | |
2692 | ||
f3c85bc1 LN |
2693 | if (of_device_is_compatible(np, "fsl,sec3.0")) |
2694 | priv->features |= TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT; | |
2695 | ||
fe5720e2 | 2696 | if (of_device_is_compatible(np, "fsl,sec2.1")) |
60f208d7 | 2697 | priv->features |= TALITOS_FTR_HW_AUTH_CHECK | |
79b3a418 LN |
2698 | TALITOS_FTR_SHA224_HWINIT | |
2699 | TALITOS_FTR_HMAC_OK; | |
fe5720e2 | 2700 | |
4b992628 KP |
2701 | priv->chan = kzalloc(sizeof(struct talitos_channel) * |
2702 | priv->num_channels, GFP_KERNEL); | |
2703 | if (!priv->chan) { | |
2704 | dev_err(dev, "failed to allocate channel management space\n"); | |
9c4a7965 KP |
2705 | err = -ENOMEM; |
2706 | goto err_out; | |
2707 | } | |
2708 | ||
c3e337f8 KP |
2709 | for (i = 0; i < priv->num_channels; i++) { |
2710 | priv->chan[i].reg = priv->reg + TALITOS_CH_STRIDE * (i + 1); | |
2cdba3cf | 2711 | if (!priv->irq[1] || !(i & 1)) |
c3e337f8 KP |
2712 | priv->chan[i].reg += TALITOS_CH_BASE_OFFSET; |
2713 | } | |
ad42d5fc | 2714 | |
9c4a7965 | 2715 | for (i = 0; i < priv->num_channels; i++) { |
4b992628 KP |
2716 | spin_lock_init(&priv->chan[i].head_lock); |
2717 | spin_lock_init(&priv->chan[i].tail_lock); | |
9c4a7965 KP |
2718 | } |
2719 | ||
2720 | priv->fifo_len = roundup_pow_of_two(priv->chfifo_len); | |
2721 | ||
2722 | for (i = 0; i < priv->num_channels; i++) { | |
4b992628 KP |
2723 | priv->chan[i].fifo = kzalloc(sizeof(struct talitos_request) * |
2724 | priv->fifo_len, GFP_KERNEL); | |
2725 | if (!priv->chan[i].fifo) { | |
9c4a7965 KP |
2726 | dev_err(dev, "failed to allocate request fifo %d\n", i); |
2727 | err = -ENOMEM; | |
2728 | goto err_out; | |
2729 | } | |
2730 | } | |
2731 | ||
ec6644d6 | 2732 | for (i = 0; i < priv->num_channels; i++) |
4b992628 KP |
2733 | atomic_set(&priv->chan[i].submit_count, |
2734 | -(priv->chfifo_len - 1)); | |
9c4a7965 | 2735 | |
81eb024c KP |
2736 | dma_set_mask(dev, DMA_BIT_MASK(36)); |
2737 | ||
9c4a7965 KP |
2738 | /* reset and initialize the h/w */ |
2739 | err = init_device(dev); | |
2740 | if (err) { | |
2741 | dev_err(dev, "failed to initialize device\n"); | |
2742 | goto err_out; | |
2743 | } | |
2744 | ||
2745 | /* register the RNG, if available */ | |
2746 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) { | |
2747 | err = talitos_register_rng(dev); | |
2748 | if (err) { | |
2749 | dev_err(dev, "failed to register hwrng: %d\n", err); | |
2750 | goto err_out; | |
2751 | } else | |
2752 | dev_info(dev, "hwrng\n"); | |
2753 | } | |
2754 | ||
2755 | /* register crypto algorithms the device supports */ | |
9c4a7965 KP |
2756 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { |
2757 | if (hw_supports(dev, driver_algs[i].desc_hdr_template)) { | |
2758 | struct talitos_crypto_alg *t_alg; | |
acbf7c62 | 2759 | char *name = NULL; |
9c4a7965 KP |
2760 | |
2761 | t_alg = talitos_alg_alloc(dev, &driver_algs[i]); | |
2762 | if (IS_ERR(t_alg)) { | |
2763 | err = PTR_ERR(t_alg); | |
0b2730d8 | 2764 | if (err == -ENOTSUPP) |
79b3a418 | 2765 | continue; |
9c4a7965 KP |
2766 | goto err_out; |
2767 | } | |
2768 | ||
acbf7c62 LN |
2769 | switch (t_alg->algt.type) { |
2770 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2771 | case CRYPTO_ALG_TYPE_AEAD: | |
2772 | err = crypto_register_alg( | |
2773 | &t_alg->algt.alg.crypto); | |
2774 | name = t_alg->algt.alg.crypto.cra_driver_name; | |
2775 | break; | |
2776 | case CRYPTO_ALG_TYPE_AHASH: | |
2777 | err = crypto_register_ahash( | |
2778 | &t_alg->algt.alg.hash); | |
2779 | name = | |
2780 | t_alg->algt.alg.hash.halg.base.cra_driver_name; | |
2781 | break; | |
2782 | } | |
9c4a7965 KP |
2783 | if (err) { |
2784 | dev_err(dev, "%s alg registration failed\n", | |
acbf7c62 | 2785 | name); |
9c4a7965 | 2786 | kfree(t_alg); |
991155ba | 2787 | } else |
9c4a7965 | 2788 | list_add_tail(&t_alg->entry, &priv->alg_list); |
9c4a7965 KP |
2789 | } |
2790 | } | |
5b859b6e KP |
2791 | if (!list_empty(&priv->alg_list)) |
2792 | dev_info(dev, "%s algorithms registered in /proc/crypto\n", | |
2793 | (char *)of_get_property(np, "compatible", NULL)); | |
9c4a7965 KP |
2794 | |
2795 | return 0; | |
2796 | ||
2797 | err_out: | |
2798 | talitos_remove(ofdev); | |
9c4a7965 KP |
2799 | |
2800 | return err; | |
2801 | } | |
2802 | ||
6c3f975a | 2803 | static const struct of_device_id talitos_match[] = { |
9c4a7965 KP |
2804 | { |
2805 | .compatible = "fsl,sec2.0", | |
2806 | }, | |
2807 | {}, | |
2808 | }; | |
2809 | MODULE_DEVICE_TABLE(of, talitos_match); | |
2810 | ||
1c48a5c9 | 2811 | static struct platform_driver talitos_driver = { |
4018294b GL |
2812 | .driver = { |
2813 | .name = "talitos", | |
2814 | .owner = THIS_MODULE, | |
2815 | .of_match_table = talitos_match, | |
2816 | }, | |
9c4a7965 | 2817 | .probe = talitos_probe, |
596f1034 | 2818 | .remove = talitos_remove, |
9c4a7965 KP |
2819 | }; |
2820 | ||
741e8c2d | 2821 | module_platform_driver(talitos_driver); |
9c4a7965 KP |
2822 | |
2823 | MODULE_LICENSE("GPL"); | |
2824 | MODULE_AUTHOR("Kim Phillips <kim.phillips@freescale.com>"); | |
2825 | MODULE_DESCRIPTION("Freescale integrated security engine (SEC) driver"); |