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9c4a7965 KP |
1 | /* |
2 | * talitos - Freescale Integrated Security Engine (SEC) device driver | |
3 | * | |
5228f0f7 | 4 | * Copyright (c) 2008-2011 Freescale Semiconductor, Inc. |
9c4a7965 KP |
5 | * |
6 | * Scatterlist Crypto API glue code copied from files with the following: | |
7 | * Copyright (c) 2006-2007 Herbert Xu <herbert@gondor.apana.org.au> | |
8 | * | |
9 | * Crypto algorithm registration code copied from hifn driver: | |
10 | * 2007+ Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru> | |
11 | * All rights reserved. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2 of the License, or | |
16 | * (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/mod_devicetable.h> | |
31 | #include <linux/device.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/crypto.h> | |
34 | #include <linux/hw_random.h> | |
35 | #include <linux/of_platform.h> | |
36 | #include <linux/dma-mapping.h> | |
37 | #include <linux/io.h> | |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/rtnetlink.h> | |
5a0e3ad6 | 40 | #include <linux/slab.h> |
9c4a7965 KP |
41 | |
42 | #include <crypto/algapi.h> | |
43 | #include <crypto/aes.h> | |
3952f17e | 44 | #include <crypto/des.h> |
9c4a7965 | 45 | #include <crypto/sha.h> |
497f2e6b | 46 | #include <crypto/md5.h> |
9c4a7965 KP |
47 | #include <crypto/aead.h> |
48 | #include <crypto/authenc.h> | |
4de9d0b5 | 49 | #include <crypto/skcipher.h> |
acbf7c62 LN |
50 | #include <crypto/hash.h> |
51 | #include <crypto/internal/hash.h> | |
4de9d0b5 | 52 | #include <crypto/scatterwalk.h> |
9c4a7965 KP |
53 | |
54 | #include "talitos.h" | |
55 | ||
81eb024c KP |
56 | static void to_talitos_ptr(struct talitos_ptr *talitos_ptr, dma_addr_t dma_addr) |
57 | { | |
58 | talitos_ptr->ptr = cpu_to_be32(lower_32_bits(dma_addr)); | |
a752447a | 59 | talitos_ptr->eptr = upper_32_bits(dma_addr); |
81eb024c KP |
60 | } |
61 | ||
9c4a7965 KP |
62 | /* |
63 | * map virtual single (contiguous) pointer to h/w descriptor pointer | |
64 | */ | |
65 | static void map_single_talitos_ptr(struct device *dev, | |
66 | struct talitos_ptr *talitos_ptr, | |
67 | unsigned short len, void *data, | |
68 | unsigned char extent, | |
69 | enum dma_data_direction dir) | |
70 | { | |
81eb024c KP |
71 | dma_addr_t dma_addr = dma_map_single(dev, data, len, dir); |
72 | ||
9c4a7965 | 73 | talitos_ptr->len = cpu_to_be16(len); |
81eb024c | 74 | to_talitos_ptr(talitos_ptr, dma_addr); |
9c4a7965 KP |
75 | talitos_ptr->j_extent = extent; |
76 | } | |
77 | ||
78 | /* | |
79 | * unmap bus single (contiguous) h/w descriptor pointer | |
80 | */ | |
81 | static void unmap_single_talitos_ptr(struct device *dev, | |
82 | struct talitos_ptr *talitos_ptr, | |
83 | enum dma_data_direction dir) | |
84 | { | |
85 | dma_unmap_single(dev, be32_to_cpu(talitos_ptr->ptr), | |
86 | be16_to_cpu(talitos_ptr->len), dir); | |
87 | } | |
88 | ||
89 | static int reset_channel(struct device *dev, int ch) | |
90 | { | |
91 | struct talitos_private *priv = dev_get_drvdata(dev); | |
92 | unsigned int timeout = TALITOS_TIMEOUT; | |
93 | ||
ad42d5fc | 94 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, TALITOS_CCCR_RESET); |
9c4a7965 | 95 | |
ad42d5fc | 96 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & TALITOS_CCCR_RESET) |
9c4a7965 KP |
97 | && --timeout) |
98 | cpu_relax(); | |
99 | ||
100 | if (timeout == 0) { | |
101 | dev_err(dev, "failed to reset channel %d\n", ch); | |
102 | return -EIO; | |
103 | } | |
104 | ||
81eb024c | 105 | /* set 36-bit addressing, done writeback enable and done IRQ enable */ |
ad42d5fc | 106 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, TALITOS_CCCR_LO_EAE | |
81eb024c | 107 | TALITOS_CCCR_LO_CDWE | TALITOS_CCCR_LO_CDIE); |
9c4a7965 | 108 | |
fe5720e2 KP |
109 | /* and ICCR writeback, if available */ |
110 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
ad42d5fc | 111 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, |
fe5720e2 KP |
112 | TALITOS_CCCR_LO_IWSE); |
113 | ||
9c4a7965 KP |
114 | return 0; |
115 | } | |
116 | ||
117 | static int reset_device(struct device *dev) | |
118 | { | |
119 | struct talitos_private *priv = dev_get_drvdata(dev); | |
120 | unsigned int timeout = TALITOS_TIMEOUT; | |
c3e337f8 | 121 | u32 mcr = TALITOS_MCR_SWR; |
9c4a7965 | 122 | |
c3e337f8 | 123 | setbits32(priv->reg + TALITOS_MCR, mcr); |
9c4a7965 KP |
124 | |
125 | while ((in_be32(priv->reg + TALITOS_MCR) & TALITOS_MCR_SWR) | |
126 | && --timeout) | |
127 | cpu_relax(); | |
128 | ||
2cdba3cf | 129 | if (priv->irq[1]) { |
c3e337f8 KP |
130 | mcr = TALITOS_MCR_RCA1 | TALITOS_MCR_RCA3; |
131 | setbits32(priv->reg + TALITOS_MCR, mcr); | |
132 | } | |
133 | ||
9c4a7965 KP |
134 | if (timeout == 0) { |
135 | dev_err(dev, "failed to reset device\n"); | |
136 | return -EIO; | |
137 | } | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
142 | /* | |
143 | * Reset and initialize the device | |
144 | */ | |
145 | static int init_device(struct device *dev) | |
146 | { | |
147 | struct talitos_private *priv = dev_get_drvdata(dev); | |
148 | int ch, err; | |
149 | ||
150 | /* | |
151 | * Master reset | |
152 | * errata documentation: warning: certain SEC interrupts | |
153 | * are not fully cleared by writing the MCR:SWR bit, | |
154 | * set bit twice to completely reset | |
155 | */ | |
156 | err = reset_device(dev); | |
157 | if (err) | |
158 | return err; | |
159 | ||
160 | err = reset_device(dev); | |
161 | if (err) | |
162 | return err; | |
163 | ||
164 | /* reset channels */ | |
165 | for (ch = 0; ch < priv->num_channels; ch++) { | |
166 | err = reset_channel(dev, ch); | |
167 | if (err) | |
168 | return err; | |
169 | } | |
170 | ||
171 | /* enable channel done and error interrupts */ | |
172 | setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_INIT); | |
173 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); | |
174 | ||
fe5720e2 KP |
175 | /* disable integrity check error interrupts (use writeback instead) */ |
176 | if (priv->features & TALITOS_FTR_HW_AUTH_CHECK) | |
177 | setbits32(priv->reg + TALITOS_MDEUICR_LO, | |
178 | TALITOS_MDEUICR_LO_ICE); | |
179 | ||
9c4a7965 KP |
180 | return 0; |
181 | } | |
182 | ||
183 | /** | |
184 | * talitos_submit - submits a descriptor to the device for processing | |
185 | * @dev: the SEC device to be used | |
5228f0f7 | 186 | * @ch: the SEC device channel to be used |
9c4a7965 KP |
187 | * @desc: the descriptor to be processed by the device |
188 | * @callback: whom to call when processing is complete | |
189 | * @context: a handle for use by caller (optional) | |
190 | * | |
191 | * desc must contain valid dma-mapped (bus physical) address pointers. | |
192 | * callback must check err and feedback in descriptor header | |
193 | * for device processing status. | |
194 | */ | |
865d5061 HG |
195 | int talitos_submit(struct device *dev, int ch, struct talitos_desc *desc, |
196 | void (*callback)(struct device *dev, | |
197 | struct talitos_desc *desc, | |
198 | void *context, int error), | |
199 | void *context) | |
9c4a7965 KP |
200 | { |
201 | struct talitos_private *priv = dev_get_drvdata(dev); | |
202 | struct talitos_request *request; | |
5228f0f7 | 203 | unsigned long flags; |
9c4a7965 KP |
204 | int head; |
205 | ||
4b992628 | 206 | spin_lock_irqsave(&priv->chan[ch].head_lock, flags); |
9c4a7965 | 207 | |
4b992628 | 208 | if (!atomic_inc_not_zero(&priv->chan[ch].submit_count)) { |
ec6644d6 | 209 | /* h/w fifo is full */ |
4b992628 | 210 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
211 | return -EAGAIN; |
212 | } | |
213 | ||
4b992628 KP |
214 | head = priv->chan[ch].head; |
215 | request = &priv->chan[ch].fifo[head]; | |
ec6644d6 | 216 | |
9c4a7965 KP |
217 | /* map descriptor and save caller data */ |
218 | request->dma_desc = dma_map_single(dev, desc, sizeof(*desc), | |
219 | DMA_BIDIRECTIONAL); | |
220 | request->callback = callback; | |
221 | request->context = context; | |
222 | ||
223 | /* increment fifo head */ | |
4b992628 | 224 | priv->chan[ch].head = (priv->chan[ch].head + 1) & (priv->fifo_len - 1); |
9c4a7965 KP |
225 | |
226 | smp_wmb(); | |
227 | request->desc = desc; | |
228 | ||
229 | /* GO! */ | |
230 | wmb(); | |
ad42d5fc KP |
231 | out_be32(priv->chan[ch].reg + TALITOS_FF, |
232 | upper_32_bits(request->dma_desc)); | |
233 | out_be32(priv->chan[ch].reg + TALITOS_FF_LO, | |
a752447a | 234 | lower_32_bits(request->dma_desc)); |
9c4a7965 | 235 | |
4b992628 | 236 | spin_unlock_irqrestore(&priv->chan[ch].head_lock, flags); |
9c4a7965 KP |
237 | |
238 | return -EINPROGRESS; | |
239 | } | |
865d5061 | 240 | EXPORT_SYMBOL(talitos_submit); |
9c4a7965 KP |
241 | |
242 | /* | |
243 | * process what was done, notify callback of error if not | |
244 | */ | |
245 | static void flush_channel(struct device *dev, int ch, int error, int reset_ch) | |
246 | { | |
247 | struct talitos_private *priv = dev_get_drvdata(dev); | |
248 | struct talitos_request *request, saved_req; | |
249 | unsigned long flags; | |
250 | int tail, status; | |
251 | ||
4b992628 | 252 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
9c4a7965 | 253 | |
4b992628 KP |
254 | tail = priv->chan[ch].tail; |
255 | while (priv->chan[ch].fifo[tail].desc) { | |
256 | request = &priv->chan[ch].fifo[tail]; | |
9c4a7965 KP |
257 | |
258 | /* descriptors with their done bits set don't get the error */ | |
259 | rmb(); | |
ca38a814 | 260 | if ((request->desc->hdr & DESC_HDR_DONE) == DESC_HDR_DONE) |
9c4a7965 | 261 | status = 0; |
ca38a814 | 262 | else |
9c4a7965 KP |
263 | if (!error) |
264 | break; | |
265 | else | |
266 | status = error; | |
267 | ||
268 | dma_unmap_single(dev, request->dma_desc, | |
e938e465 KP |
269 | sizeof(struct talitos_desc), |
270 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
271 | |
272 | /* copy entries so we can call callback outside lock */ | |
273 | saved_req.desc = request->desc; | |
274 | saved_req.callback = request->callback; | |
275 | saved_req.context = request->context; | |
276 | ||
277 | /* release request entry in fifo */ | |
278 | smp_wmb(); | |
279 | request->desc = NULL; | |
280 | ||
281 | /* increment fifo tail */ | |
4b992628 | 282 | priv->chan[ch].tail = (tail + 1) & (priv->fifo_len - 1); |
9c4a7965 | 283 | |
4b992628 | 284 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
ec6644d6 | 285 | |
4b992628 | 286 | atomic_dec(&priv->chan[ch].submit_count); |
ec6644d6 | 287 | |
9c4a7965 KP |
288 | saved_req.callback(dev, saved_req.desc, saved_req.context, |
289 | status); | |
290 | /* channel may resume processing in single desc error case */ | |
291 | if (error && !reset_ch && status == error) | |
292 | return; | |
4b992628 KP |
293 | spin_lock_irqsave(&priv->chan[ch].tail_lock, flags); |
294 | tail = priv->chan[ch].tail; | |
9c4a7965 KP |
295 | } |
296 | ||
4b992628 | 297 | spin_unlock_irqrestore(&priv->chan[ch].tail_lock, flags); |
9c4a7965 KP |
298 | } |
299 | ||
300 | /* | |
301 | * process completed requests for channels that have done status | |
302 | */ | |
c3e337f8 KP |
303 | #define DEF_TALITOS_DONE(name, ch_done_mask) \ |
304 | static void talitos_done_##name(unsigned long data) \ | |
305 | { \ | |
306 | struct device *dev = (struct device *)data; \ | |
307 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
511d63cb | 308 | unsigned long flags; \ |
c3e337f8 KP |
309 | \ |
310 | if (ch_done_mask & 1) \ | |
311 | flush_channel(dev, 0, 0, 0); \ | |
312 | if (priv->num_channels == 1) \ | |
313 | goto out; \ | |
314 | if (ch_done_mask & (1 << 2)) \ | |
315 | flush_channel(dev, 1, 0, 0); \ | |
316 | if (ch_done_mask & (1 << 4)) \ | |
317 | flush_channel(dev, 2, 0, 0); \ | |
318 | if (ch_done_mask & (1 << 6)) \ | |
319 | flush_channel(dev, 3, 0, 0); \ | |
320 | \ | |
321 | out: \ | |
322 | /* At this point, all completed channels have been processed */ \ | |
323 | /* Unmask done interrupts for channels completed later on. */ \ | |
511d63cb | 324 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
325 | setbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ |
326 | setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); \ | |
511d63cb | 327 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
9c4a7965 | 328 | } |
c3e337f8 KP |
329 | DEF_TALITOS_DONE(4ch, TALITOS_ISR_4CHDONE) |
330 | DEF_TALITOS_DONE(ch0_2, TALITOS_ISR_CH_0_2_DONE) | |
331 | DEF_TALITOS_DONE(ch1_3, TALITOS_ISR_CH_1_3_DONE) | |
9c4a7965 KP |
332 | |
333 | /* | |
334 | * locate current (offending) descriptor | |
335 | */ | |
3e721aeb | 336 | static u32 current_desc_hdr(struct device *dev, int ch) |
9c4a7965 KP |
337 | { |
338 | struct talitos_private *priv = dev_get_drvdata(dev); | |
4b992628 | 339 | int tail = priv->chan[ch].tail; |
9c4a7965 KP |
340 | dma_addr_t cur_desc; |
341 | ||
ad42d5fc | 342 | cur_desc = in_be32(priv->chan[ch].reg + TALITOS_CDPR_LO); |
9c4a7965 | 343 | |
4b992628 | 344 | while (priv->chan[ch].fifo[tail].dma_desc != cur_desc) { |
9c4a7965 | 345 | tail = (tail + 1) & (priv->fifo_len - 1); |
4b992628 | 346 | if (tail == priv->chan[ch].tail) { |
9c4a7965 | 347 | dev_err(dev, "couldn't locate current descriptor\n"); |
3e721aeb | 348 | return 0; |
9c4a7965 KP |
349 | } |
350 | } | |
351 | ||
3e721aeb | 352 | return priv->chan[ch].fifo[tail].desc->hdr; |
9c4a7965 KP |
353 | } |
354 | ||
355 | /* | |
356 | * user diagnostics; report root cause of error based on execution unit status | |
357 | */ | |
3e721aeb | 358 | static void report_eu_error(struct device *dev, int ch, u32 desc_hdr) |
9c4a7965 KP |
359 | { |
360 | struct talitos_private *priv = dev_get_drvdata(dev); | |
361 | int i; | |
362 | ||
3e721aeb | 363 | if (!desc_hdr) |
ad42d5fc | 364 | desc_hdr = in_be32(priv->chan[ch].reg + TALITOS_DESCBUF); |
3e721aeb KP |
365 | |
366 | switch (desc_hdr & DESC_HDR_SEL0_MASK) { | |
9c4a7965 KP |
367 | case DESC_HDR_SEL0_AFEU: |
368 | dev_err(dev, "AFEUISR 0x%08x_%08x\n", | |
369 | in_be32(priv->reg + TALITOS_AFEUISR), | |
370 | in_be32(priv->reg + TALITOS_AFEUISR_LO)); | |
371 | break; | |
372 | case DESC_HDR_SEL0_DEU: | |
373 | dev_err(dev, "DEUISR 0x%08x_%08x\n", | |
374 | in_be32(priv->reg + TALITOS_DEUISR), | |
375 | in_be32(priv->reg + TALITOS_DEUISR_LO)); | |
376 | break; | |
377 | case DESC_HDR_SEL0_MDEUA: | |
378 | case DESC_HDR_SEL0_MDEUB: | |
379 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
380 | in_be32(priv->reg + TALITOS_MDEUISR), | |
381 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
382 | break; | |
383 | case DESC_HDR_SEL0_RNG: | |
384 | dev_err(dev, "RNGUISR 0x%08x_%08x\n", | |
385 | in_be32(priv->reg + TALITOS_RNGUISR), | |
386 | in_be32(priv->reg + TALITOS_RNGUISR_LO)); | |
387 | break; | |
388 | case DESC_HDR_SEL0_PKEU: | |
389 | dev_err(dev, "PKEUISR 0x%08x_%08x\n", | |
390 | in_be32(priv->reg + TALITOS_PKEUISR), | |
391 | in_be32(priv->reg + TALITOS_PKEUISR_LO)); | |
392 | break; | |
393 | case DESC_HDR_SEL0_AESU: | |
394 | dev_err(dev, "AESUISR 0x%08x_%08x\n", | |
395 | in_be32(priv->reg + TALITOS_AESUISR), | |
396 | in_be32(priv->reg + TALITOS_AESUISR_LO)); | |
397 | break; | |
398 | case DESC_HDR_SEL0_CRCU: | |
399 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
400 | in_be32(priv->reg + TALITOS_CRCUISR), | |
401 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
402 | break; | |
403 | case DESC_HDR_SEL0_KEU: | |
404 | dev_err(dev, "KEUISR 0x%08x_%08x\n", | |
405 | in_be32(priv->reg + TALITOS_KEUISR), | |
406 | in_be32(priv->reg + TALITOS_KEUISR_LO)); | |
407 | break; | |
408 | } | |
409 | ||
3e721aeb | 410 | switch (desc_hdr & DESC_HDR_SEL1_MASK) { |
9c4a7965 KP |
411 | case DESC_HDR_SEL1_MDEUA: |
412 | case DESC_HDR_SEL1_MDEUB: | |
413 | dev_err(dev, "MDEUISR 0x%08x_%08x\n", | |
414 | in_be32(priv->reg + TALITOS_MDEUISR), | |
415 | in_be32(priv->reg + TALITOS_MDEUISR_LO)); | |
416 | break; | |
417 | case DESC_HDR_SEL1_CRCU: | |
418 | dev_err(dev, "CRCUISR 0x%08x_%08x\n", | |
419 | in_be32(priv->reg + TALITOS_CRCUISR), | |
420 | in_be32(priv->reg + TALITOS_CRCUISR_LO)); | |
421 | break; | |
422 | } | |
423 | ||
424 | for (i = 0; i < 8; i++) | |
425 | dev_err(dev, "DESCBUF 0x%08x_%08x\n", | |
ad42d5fc KP |
426 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF + 8*i), |
427 | in_be32(priv->chan[ch].reg + TALITOS_DESCBUF_LO + 8*i)); | |
9c4a7965 KP |
428 | } |
429 | ||
430 | /* | |
431 | * recover from error interrupts | |
432 | */ | |
5e718a09 | 433 | static void talitos_error(struct device *dev, u32 isr, u32 isr_lo) |
9c4a7965 | 434 | { |
9c4a7965 KP |
435 | struct talitos_private *priv = dev_get_drvdata(dev); |
436 | unsigned int timeout = TALITOS_TIMEOUT; | |
437 | int ch, error, reset_dev = 0, reset_ch = 0; | |
40405f10 | 438 | u32 v, v_lo; |
9c4a7965 KP |
439 | |
440 | for (ch = 0; ch < priv->num_channels; ch++) { | |
441 | /* skip channels without errors */ | |
442 | if (!(isr & (1 << (ch * 2 + 1)))) | |
443 | continue; | |
444 | ||
445 | error = -EINVAL; | |
446 | ||
ad42d5fc KP |
447 | v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR); |
448 | v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO); | |
9c4a7965 KP |
449 | |
450 | if (v_lo & TALITOS_CCPSR_LO_DOF) { | |
451 | dev_err(dev, "double fetch fifo overflow error\n"); | |
452 | error = -EAGAIN; | |
453 | reset_ch = 1; | |
454 | } | |
455 | if (v_lo & TALITOS_CCPSR_LO_SOF) { | |
456 | /* h/w dropped descriptor */ | |
457 | dev_err(dev, "single fetch fifo overflow error\n"); | |
458 | error = -EAGAIN; | |
459 | } | |
460 | if (v_lo & TALITOS_CCPSR_LO_MDTE) | |
461 | dev_err(dev, "master data transfer error\n"); | |
462 | if (v_lo & TALITOS_CCPSR_LO_SGDLZ) | |
463 | dev_err(dev, "s/g data length zero error\n"); | |
464 | if (v_lo & TALITOS_CCPSR_LO_FPZ) | |
465 | dev_err(dev, "fetch pointer zero error\n"); | |
466 | if (v_lo & TALITOS_CCPSR_LO_IDH) | |
467 | dev_err(dev, "illegal descriptor header error\n"); | |
468 | if (v_lo & TALITOS_CCPSR_LO_IEU) | |
469 | dev_err(dev, "invalid execution unit error\n"); | |
470 | if (v_lo & TALITOS_CCPSR_LO_EU) | |
3e721aeb | 471 | report_eu_error(dev, ch, current_desc_hdr(dev, ch)); |
9c4a7965 KP |
472 | if (v_lo & TALITOS_CCPSR_LO_GB) |
473 | dev_err(dev, "gather boundary error\n"); | |
474 | if (v_lo & TALITOS_CCPSR_LO_GRL) | |
475 | dev_err(dev, "gather return/length error\n"); | |
476 | if (v_lo & TALITOS_CCPSR_LO_SB) | |
477 | dev_err(dev, "scatter boundary error\n"); | |
478 | if (v_lo & TALITOS_CCPSR_LO_SRL) | |
479 | dev_err(dev, "scatter return/length error\n"); | |
480 | ||
481 | flush_channel(dev, ch, error, reset_ch); | |
482 | ||
483 | if (reset_ch) { | |
484 | reset_channel(dev, ch); | |
485 | } else { | |
ad42d5fc | 486 | setbits32(priv->chan[ch].reg + TALITOS_CCCR, |
9c4a7965 | 487 | TALITOS_CCCR_CONT); |
ad42d5fc KP |
488 | setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, 0); |
489 | while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) & | |
9c4a7965 KP |
490 | TALITOS_CCCR_CONT) && --timeout) |
491 | cpu_relax(); | |
492 | if (timeout == 0) { | |
493 | dev_err(dev, "failed to restart channel %d\n", | |
494 | ch); | |
495 | reset_dev = 1; | |
496 | } | |
497 | } | |
498 | } | |
c3e337f8 | 499 | if (reset_dev || isr & ~TALITOS_ISR_4CHERR || isr_lo) { |
9c4a7965 KP |
500 | dev_err(dev, "done overflow, internal time out, or rngu error: " |
501 | "ISR 0x%08x_%08x\n", isr, isr_lo); | |
502 | ||
503 | /* purge request queues */ | |
504 | for (ch = 0; ch < priv->num_channels; ch++) | |
505 | flush_channel(dev, ch, -EIO, 1); | |
506 | ||
507 | /* reset and reinitialize the device */ | |
508 | init_device(dev); | |
509 | } | |
510 | } | |
511 | ||
c3e337f8 KP |
512 | #define DEF_TALITOS_INTERRUPT(name, ch_done_mask, ch_err_mask, tlet) \ |
513 | static irqreturn_t talitos_interrupt_##name(int irq, void *data) \ | |
514 | { \ | |
515 | struct device *dev = data; \ | |
516 | struct talitos_private *priv = dev_get_drvdata(dev); \ | |
517 | u32 isr, isr_lo; \ | |
511d63cb | 518 | unsigned long flags; \ |
c3e337f8 | 519 | \ |
511d63cb | 520 | spin_lock_irqsave(&priv->reg_lock, flags); \ |
c3e337f8 KP |
521 | isr = in_be32(priv->reg + TALITOS_ISR); \ |
522 | isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); \ | |
523 | /* Acknowledge interrupt */ \ | |
524 | out_be32(priv->reg + TALITOS_ICR, isr & (ch_done_mask | ch_err_mask)); \ | |
525 | out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); \ | |
526 | \ | |
511d63cb HG |
527 | if (unlikely(isr & ch_err_mask || isr_lo)) { \ |
528 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ | |
529 | talitos_error(dev, isr & ch_err_mask, isr_lo); \ | |
530 | } \ | |
531 | else { \ | |
c3e337f8 KP |
532 | if (likely(isr & ch_done_mask)) { \ |
533 | /* mask further done interrupts. */ \ | |
534 | clrbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ | |
535 | /* done_task will unmask done interrupts at exit */ \ | |
536 | tasklet_schedule(&priv->done_task[tlet]); \ | |
537 | } \ | |
511d63cb HG |
538 | spin_unlock_irqrestore(&priv->reg_lock, flags); \ |
539 | } \ | |
c3e337f8 KP |
540 | \ |
541 | return (isr & (ch_done_mask | ch_err_mask) || isr_lo) ? IRQ_HANDLED : \ | |
542 | IRQ_NONE; \ | |
9c4a7965 | 543 | } |
c3e337f8 KP |
544 | DEF_TALITOS_INTERRUPT(4ch, TALITOS_ISR_4CHDONE, TALITOS_ISR_4CHERR, 0) |
545 | DEF_TALITOS_INTERRUPT(ch0_2, TALITOS_ISR_CH_0_2_DONE, TALITOS_ISR_CH_0_2_ERR, 0) | |
546 | DEF_TALITOS_INTERRUPT(ch1_3, TALITOS_ISR_CH_1_3_DONE, TALITOS_ISR_CH_1_3_ERR, 1) | |
9c4a7965 KP |
547 | |
548 | /* | |
549 | * hwrng | |
550 | */ | |
551 | static int talitos_rng_data_present(struct hwrng *rng, int wait) | |
552 | { | |
553 | struct device *dev = (struct device *)rng->priv; | |
554 | struct talitos_private *priv = dev_get_drvdata(dev); | |
555 | u32 ofl; | |
556 | int i; | |
557 | ||
558 | for (i = 0; i < 20; i++) { | |
559 | ofl = in_be32(priv->reg + TALITOS_RNGUSR_LO) & | |
560 | TALITOS_RNGUSR_LO_OFL; | |
561 | if (ofl || !wait) | |
562 | break; | |
563 | udelay(10); | |
564 | } | |
565 | ||
566 | return !!ofl; | |
567 | } | |
568 | ||
569 | static int talitos_rng_data_read(struct hwrng *rng, u32 *data) | |
570 | { | |
571 | struct device *dev = (struct device *)rng->priv; | |
572 | struct talitos_private *priv = dev_get_drvdata(dev); | |
573 | ||
574 | /* rng fifo requires 64-bit accesses */ | |
575 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO); | |
576 | *data = in_be32(priv->reg + TALITOS_RNGU_FIFO_LO); | |
577 | ||
578 | return sizeof(u32); | |
579 | } | |
580 | ||
581 | static int talitos_rng_init(struct hwrng *rng) | |
582 | { | |
583 | struct device *dev = (struct device *)rng->priv; | |
584 | struct talitos_private *priv = dev_get_drvdata(dev); | |
585 | unsigned int timeout = TALITOS_TIMEOUT; | |
586 | ||
587 | setbits32(priv->reg + TALITOS_RNGURCR_LO, TALITOS_RNGURCR_LO_SR); | |
588 | while (!(in_be32(priv->reg + TALITOS_RNGUSR_LO) & TALITOS_RNGUSR_LO_RD) | |
589 | && --timeout) | |
590 | cpu_relax(); | |
591 | if (timeout == 0) { | |
592 | dev_err(dev, "failed to reset rng hw\n"); | |
593 | return -ENODEV; | |
594 | } | |
595 | ||
596 | /* start generating */ | |
597 | setbits32(priv->reg + TALITOS_RNGUDSR_LO, 0); | |
598 | ||
599 | return 0; | |
600 | } | |
601 | ||
602 | static int talitos_register_rng(struct device *dev) | |
603 | { | |
604 | struct talitos_private *priv = dev_get_drvdata(dev); | |
605 | ||
606 | priv->rng.name = dev_driver_string(dev), | |
607 | priv->rng.init = talitos_rng_init, | |
608 | priv->rng.data_present = talitos_rng_data_present, | |
609 | priv->rng.data_read = talitos_rng_data_read, | |
610 | priv->rng.priv = (unsigned long)dev; | |
611 | ||
612 | return hwrng_register(&priv->rng); | |
613 | } | |
614 | ||
615 | static void talitos_unregister_rng(struct device *dev) | |
616 | { | |
617 | struct talitos_private *priv = dev_get_drvdata(dev); | |
618 | ||
619 | hwrng_unregister(&priv->rng); | |
620 | } | |
621 | ||
622 | /* | |
623 | * crypto alg | |
624 | */ | |
625 | #define TALITOS_CRA_PRIORITY 3000 | |
357fb605 | 626 | #define TALITOS_MAX_KEY_SIZE 96 |
3952f17e | 627 | #define TALITOS_MAX_IV_LENGTH 16 /* max of AES_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE */ |
70bcaca7 | 628 | |
497f2e6b | 629 | #define MD5_BLOCK_SIZE 64 |
9c4a7965 KP |
630 | |
631 | struct talitos_ctx { | |
632 | struct device *dev; | |
5228f0f7 | 633 | int ch; |
9c4a7965 KP |
634 | __be32 desc_hdr_template; |
635 | u8 key[TALITOS_MAX_KEY_SIZE]; | |
70bcaca7 | 636 | u8 iv[TALITOS_MAX_IV_LENGTH]; |
9c4a7965 KP |
637 | unsigned int keylen; |
638 | unsigned int enckeylen; | |
639 | unsigned int authkeylen; | |
640 | unsigned int authsize; | |
641 | }; | |
642 | ||
497f2e6b LN |
643 | #define HASH_MAX_BLOCK_SIZE SHA512_BLOCK_SIZE |
644 | #define TALITOS_MDEU_MAX_CONTEXT_SIZE TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512 | |
645 | ||
646 | struct talitos_ahash_req_ctx { | |
60f208d7 | 647 | u32 hw_context[TALITOS_MDEU_MAX_CONTEXT_SIZE / sizeof(u32)]; |
497f2e6b LN |
648 | unsigned int hw_context_size; |
649 | u8 buf[HASH_MAX_BLOCK_SIZE]; | |
650 | u8 bufnext[HASH_MAX_BLOCK_SIZE]; | |
60f208d7 | 651 | unsigned int swinit; |
497f2e6b LN |
652 | unsigned int first; |
653 | unsigned int last; | |
654 | unsigned int to_hash_later; | |
5e833bc4 | 655 | u64 nbuf; |
497f2e6b LN |
656 | struct scatterlist bufsl[2]; |
657 | struct scatterlist *psrc; | |
658 | }; | |
659 | ||
56af8cd4 LN |
660 | static int aead_setauthsize(struct crypto_aead *authenc, |
661 | unsigned int authsize) | |
9c4a7965 KP |
662 | { |
663 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
664 | ||
665 | ctx->authsize = authsize; | |
666 | ||
667 | return 0; | |
668 | } | |
669 | ||
56af8cd4 LN |
670 | static int aead_setkey(struct crypto_aead *authenc, |
671 | const u8 *key, unsigned int keylen) | |
9c4a7965 KP |
672 | { |
673 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
674 | struct rtattr *rta = (void *)key; | |
675 | struct crypto_authenc_key_param *param; | |
676 | unsigned int authkeylen; | |
677 | unsigned int enckeylen; | |
678 | ||
679 | if (!RTA_OK(rta, keylen)) | |
680 | goto badkey; | |
681 | ||
682 | if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) | |
683 | goto badkey; | |
684 | ||
685 | if (RTA_PAYLOAD(rta) < sizeof(*param)) | |
686 | goto badkey; | |
687 | ||
688 | param = RTA_DATA(rta); | |
689 | enckeylen = be32_to_cpu(param->enckeylen); | |
690 | ||
691 | key += RTA_ALIGN(rta->rta_len); | |
692 | keylen -= RTA_ALIGN(rta->rta_len); | |
693 | ||
694 | if (keylen < enckeylen) | |
695 | goto badkey; | |
696 | ||
697 | authkeylen = keylen - enckeylen; | |
698 | ||
699 | if (keylen > TALITOS_MAX_KEY_SIZE) | |
700 | goto badkey; | |
701 | ||
702 | memcpy(&ctx->key, key, keylen); | |
703 | ||
704 | ctx->keylen = keylen; | |
705 | ctx->enckeylen = enckeylen; | |
706 | ctx->authkeylen = authkeylen; | |
707 | ||
708 | return 0; | |
709 | ||
710 | badkey: | |
711 | crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
712 | return -EINVAL; | |
713 | } | |
714 | ||
715 | /* | |
56af8cd4 | 716 | * talitos_edesc - s/w-extended descriptor |
9c4a7965 KP |
717 | * @src_nents: number of segments in input scatterlist |
718 | * @dst_nents: number of segments in output scatterlist | |
719 | * @dma_len: length of dma mapped link_tbl space | |
720 | * @dma_link_tbl: bus physical address of link_tbl | |
721 | * @desc: h/w descriptor | |
722 | * @link_tbl: input and output h/w link tables (if {src,dst}_nents > 1) | |
723 | * | |
724 | * if decrypting (with authcheck), or either one of src_nents or dst_nents | |
725 | * is greater than 1, an integrity check value is concatenated to the end | |
726 | * of link_tbl data | |
727 | */ | |
56af8cd4 | 728 | struct talitos_edesc { |
9c4a7965 KP |
729 | int src_nents; |
730 | int dst_nents; | |
4de9d0b5 LN |
731 | int src_is_chained; |
732 | int dst_is_chained; | |
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, | |
741 | int chained) | |
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) { | |
771 | if (edesc->src_is_chained) | |
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 LN |
776 | if (dst) { |
777 | if (edesc->dst_is_chained) | |
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 LN |
784 | } else |
785 | if (edesc->src_is_chained) | |
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 | ||
800 | dma_unmap_sg(dev, areq->assoc, 1, DMA_TO_DEVICE); | |
801 | ||
4de9d0b5 | 802 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); |
9c4a7965 KP |
803 | |
804 | if (edesc->dma_len) | |
805 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
806 | DMA_BIDIRECTIONAL); | |
807 | } | |
808 | ||
809 | /* | |
810 | * ipsec_esp descriptor callbacks | |
811 | */ | |
812 | static void ipsec_esp_encrypt_done(struct device *dev, | |
813 | struct talitos_desc *desc, void *context, | |
814 | int err) | |
815 | { | |
816 | struct aead_request *areq = context; | |
9c4a7965 KP |
817 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); |
818 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 819 | struct talitos_edesc *edesc; |
9c4a7965 KP |
820 | struct scatterlist *sg; |
821 | void *icvdata; | |
822 | ||
19bbbc63 KP |
823 | edesc = container_of(desc, struct talitos_edesc, desc); |
824 | ||
9c4a7965 KP |
825 | ipsec_esp_unmap(dev, edesc, areq); |
826 | ||
827 | /* copy the generated ICV to dst */ | |
828 | if (edesc->dma_len) { | |
829 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
f3c85bc1 | 830 | edesc->dst_nents + 2]; |
9c4a7965 KP |
831 | sg = sg_last(areq->dst, edesc->dst_nents); |
832 | memcpy((char *)sg_virt(sg) + sg->length - ctx->authsize, | |
833 | icvdata, ctx->authsize); | |
834 | } | |
835 | ||
836 | kfree(edesc); | |
837 | ||
838 | aead_request_complete(areq, err); | |
839 | } | |
840 | ||
fe5720e2 | 841 | static void ipsec_esp_decrypt_swauth_done(struct device *dev, |
e938e465 KP |
842 | struct talitos_desc *desc, |
843 | void *context, int err) | |
9c4a7965 KP |
844 | { |
845 | struct aead_request *req = context; | |
9c4a7965 KP |
846 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
847 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
19bbbc63 | 848 | struct talitos_edesc *edesc; |
9c4a7965 KP |
849 | struct scatterlist *sg; |
850 | void *icvdata; | |
851 | ||
19bbbc63 KP |
852 | edesc = container_of(desc, struct talitos_edesc, desc); |
853 | ||
9c4a7965 KP |
854 | ipsec_esp_unmap(dev, edesc, req); |
855 | ||
856 | if (!err) { | |
857 | /* auth check */ | |
858 | if (edesc->dma_len) | |
859 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
f3c85bc1 | 860 | edesc->dst_nents + 2]; |
9c4a7965 KP |
861 | else |
862 | icvdata = &edesc->link_tbl[0]; | |
863 | ||
864 | sg = sg_last(req->dst, edesc->dst_nents ? : 1); | |
865 | err = memcmp(icvdata, (char *)sg_virt(sg) + sg->length - | |
866 | ctx->authsize, ctx->authsize) ? -EBADMSG : 0; | |
867 | } | |
868 | ||
869 | kfree(edesc); | |
870 | ||
871 | aead_request_complete(req, err); | |
872 | } | |
873 | ||
fe5720e2 | 874 | static void ipsec_esp_decrypt_hwauth_done(struct device *dev, |
e938e465 KP |
875 | struct talitos_desc *desc, |
876 | void *context, int err) | |
fe5720e2 KP |
877 | { |
878 | struct aead_request *req = context; | |
19bbbc63 KP |
879 | struct talitos_edesc *edesc; |
880 | ||
881 | edesc = container_of(desc, struct talitos_edesc, desc); | |
fe5720e2 KP |
882 | |
883 | ipsec_esp_unmap(dev, edesc, req); | |
884 | ||
885 | /* check ICV auth status */ | |
e938e465 KP |
886 | if (!err && ((desc->hdr_lo & DESC_HDR_LO_ICCR1_MASK) != |
887 | DESC_HDR_LO_ICCR1_PASS)) | |
888 | err = -EBADMSG; | |
fe5720e2 KP |
889 | |
890 | kfree(edesc); | |
891 | ||
892 | aead_request_complete(req, err); | |
893 | } | |
894 | ||
9c4a7965 KP |
895 | /* |
896 | * convert scatterlist to SEC h/w link table format | |
897 | * stop at cryptlen bytes | |
898 | */ | |
70bcaca7 | 899 | static int sg_to_link_tbl(struct scatterlist *sg, int sg_count, |
9c4a7965 KP |
900 | int cryptlen, struct talitos_ptr *link_tbl_ptr) |
901 | { | |
70bcaca7 LN |
902 | int n_sg = sg_count; |
903 | ||
904 | while (n_sg--) { | |
81eb024c | 905 | to_talitos_ptr(link_tbl_ptr, sg_dma_address(sg)); |
9c4a7965 KP |
906 | link_tbl_ptr->len = cpu_to_be16(sg_dma_len(sg)); |
907 | link_tbl_ptr->j_extent = 0; | |
908 | link_tbl_ptr++; | |
909 | cryptlen -= sg_dma_len(sg); | |
4de9d0b5 | 910 | sg = scatterwalk_sg_next(sg); |
9c4a7965 KP |
911 | } |
912 | ||
70bcaca7 | 913 | /* adjust (decrease) last one (or two) entry's len to cryptlen */ |
9c4a7965 | 914 | link_tbl_ptr--; |
c0e741d4 | 915 | while (be16_to_cpu(link_tbl_ptr->len) <= (-cryptlen)) { |
70bcaca7 LN |
916 | /* Empty this entry, and move to previous one */ |
917 | cryptlen += be16_to_cpu(link_tbl_ptr->len); | |
918 | link_tbl_ptr->len = 0; | |
919 | sg_count--; | |
920 | link_tbl_ptr--; | |
921 | } | |
9c4a7965 KP |
922 | link_tbl_ptr->len = cpu_to_be16(be16_to_cpu(link_tbl_ptr->len) |
923 | + cryptlen); | |
924 | ||
925 | /* tag end of link table */ | |
926 | link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
70bcaca7 LN |
927 | |
928 | return sg_count; | |
9c4a7965 KP |
929 | } |
930 | ||
931 | /* | |
932 | * fill in and submit ipsec_esp descriptor | |
933 | */ | |
56af8cd4 | 934 | static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq, |
9c4a7965 KP |
935 | u8 *giv, u64 seq, |
936 | void (*callback) (struct device *dev, | |
937 | struct talitos_desc *desc, | |
938 | void *context, int error)) | |
939 | { | |
940 | struct crypto_aead *aead = crypto_aead_reqtfm(areq); | |
941 | struct talitos_ctx *ctx = crypto_aead_ctx(aead); | |
942 | struct device *dev = ctx->dev; | |
943 | struct talitos_desc *desc = &edesc->desc; | |
944 | unsigned int cryptlen = areq->cryptlen; | |
945 | unsigned int authsize = ctx->authsize; | |
e41256f1 | 946 | unsigned int ivsize = crypto_aead_ivsize(aead); |
fa86a267 | 947 | int sg_count, ret; |
fe5720e2 | 948 | int sg_link_tbl_len; |
9c4a7965 KP |
949 | |
950 | /* hmac key */ | |
951 | map_single_talitos_ptr(dev, &desc->ptr[0], ctx->authkeylen, &ctx->key, | |
952 | 0, DMA_TO_DEVICE); | |
953 | /* hmac data */ | |
e41256f1 KP |
954 | map_single_talitos_ptr(dev, &desc->ptr[1], areq->assoclen + ivsize, |
955 | sg_virt(areq->assoc), 0, DMA_TO_DEVICE); | |
9c4a7965 | 956 | /* cipher iv */ |
9c4a7965 KP |
957 | map_single_talitos_ptr(dev, &desc->ptr[2], ivsize, giv ?: areq->iv, 0, |
958 | DMA_TO_DEVICE); | |
959 | ||
960 | /* cipher key */ | |
961 | map_single_talitos_ptr(dev, &desc->ptr[3], ctx->enckeylen, | |
962 | (char *)&ctx->key + ctx->authkeylen, 0, | |
963 | DMA_TO_DEVICE); | |
964 | ||
965 | /* | |
966 | * cipher in | |
967 | * map and adjust cipher len to aead request cryptlen. | |
968 | * extent is bytes of HMAC postpended to ciphertext, | |
969 | * typically 12 for ipsec | |
970 | */ | |
971 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
972 | desc->ptr[4].j_extent = authsize; | |
973 | ||
e938e465 KP |
974 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, |
975 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
976 | : DMA_TO_DEVICE, | |
4de9d0b5 | 977 | edesc->src_is_chained); |
9c4a7965 KP |
978 | |
979 | if (sg_count == 1) { | |
81eb024c | 980 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->src)); |
9c4a7965 | 981 | } else { |
fe5720e2 KP |
982 | sg_link_tbl_len = cryptlen; |
983 | ||
962a9c99 | 984 | if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV) |
fe5720e2 | 985 | sg_link_tbl_len = cryptlen + authsize; |
e938e465 | 986 | |
fe5720e2 | 987 | sg_count = sg_to_link_tbl(areq->src, sg_count, sg_link_tbl_len, |
70bcaca7 LN |
988 | &edesc->link_tbl[0]); |
989 | if (sg_count > 1) { | |
990 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
81eb024c | 991 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl); |
e938e465 KP |
992 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
993 | edesc->dma_len, | |
994 | DMA_BIDIRECTIONAL); | |
70bcaca7 LN |
995 | } else { |
996 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
997 | to_talitos_ptr(&desc->ptr[4], |
998 | sg_dma_address(areq->src)); | |
70bcaca7 | 999 | } |
9c4a7965 KP |
1000 | } |
1001 | ||
1002 | /* cipher out */ | |
1003 | desc->ptr[5].len = cpu_to_be16(cryptlen); | |
1004 | desc->ptr[5].j_extent = authsize; | |
1005 | ||
e938e465 | 1006 | if (areq->src != areq->dst) |
4de9d0b5 LN |
1007 | sg_count = talitos_map_sg(dev, areq->dst, |
1008 | edesc->dst_nents ? : 1, | |
1009 | DMA_FROM_DEVICE, | |
1010 | edesc->dst_is_chained); | |
9c4a7965 KP |
1011 | |
1012 | if (sg_count == 1) { | |
81eb024c | 1013 | to_talitos_ptr(&desc->ptr[5], sg_dma_address(areq->dst)); |
9c4a7965 KP |
1014 | } else { |
1015 | struct talitos_ptr *link_tbl_ptr = | |
f3c85bc1 | 1016 | &edesc->link_tbl[edesc->src_nents + 1]; |
9c4a7965 | 1017 | |
81eb024c KP |
1018 | to_talitos_ptr(&desc->ptr[5], edesc->dma_link_tbl + |
1019 | (edesc->src_nents + 1) * | |
1020 | sizeof(struct talitos_ptr)); | |
fe5720e2 KP |
1021 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
1022 | link_tbl_ptr); | |
1023 | ||
f3c85bc1 | 1024 | /* Add an entry to the link table for ICV data */ |
9c4a7965 | 1025 | link_tbl_ptr += sg_count - 1; |
9c4a7965 | 1026 | link_tbl_ptr->j_extent = 0; |
f3c85bc1 | 1027 | sg_count++; |
9c4a7965 KP |
1028 | link_tbl_ptr++; |
1029 | link_tbl_ptr->j_extent = DESC_PTR_LNKTBL_RETURN; | |
1030 | link_tbl_ptr->len = cpu_to_be16(authsize); | |
1031 | ||
1032 | /* icv data follows link tables */ | |
81eb024c KP |
1033 | to_talitos_ptr(link_tbl_ptr, edesc->dma_link_tbl + |
1034 | (edesc->src_nents + edesc->dst_nents + 2) * | |
1035 | sizeof(struct talitos_ptr)); | |
9c4a7965 KP |
1036 | desc->ptr[5].j_extent |= DESC_PTR_LNKTBL_JUMP; |
1037 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1038 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1039 | } | |
1040 | ||
1041 | /* iv out */ | |
1042 | map_single_talitos_ptr(dev, &desc->ptr[6], ivsize, ctx->iv, 0, | |
1043 | DMA_FROM_DEVICE); | |
1044 | ||
5228f0f7 | 1045 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
fa86a267 KP |
1046 | if (ret != -EINPROGRESS) { |
1047 | ipsec_esp_unmap(dev, edesc, areq); | |
1048 | kfree(edesc); | |
1049 | } | |
1050 | return ret; | |
9c4a7965 KP |
1051 | } |
1052 | ||
9c4a7965 KP |
1053 | /* |
1054 | * derive number of elements in scatterlist | |
1055 | */ | |
4de9d0b5 | 1056 | static int sg_count(struct scatterlist *sg_list, int nbytes, int *chained) |
9c4a7965 KP |
1057 | { |
1058 | struct scatterlist *sg = sg_list; | |
1059 | int sg_nents = 0; | |
1060 | ||
4de9d0b5 LN |
1061 | *chained = 0; |
1062 | while (nbytes > 0) { | |
9c4a7965 KP |
1063 | sg_nents++; |
1064 | nbytes -= sg->length; | |
4de9d0b5 LN |
1065 | if (!sg_is_last(sg) && (sg + 1)->length == 0) |
1066 | *chained = 1; | |
1067 | sg = scatterwalk_sg_next(sg); | |
9c4a7965 KP |
1068 | } |
1069 | ||
1070 | return sg_nents; | |
1071 | } | |
1072 | ||
497f2e6b LN |
1073 | /** |
1074 | * sg_copy_end_to_buffer - Copy end data from SG list to a linear buffer | |
1075 | * @sgl: The SG list | |
1076 | * @nents: Number of SG entries | |
1077 | * @buf: Where to copy to | |
1078 | * @buflen: The number of bytes to copy | |
1079 | * @skip: The number of bytes to skip before copying. | |
1080 | * Note: skip + buflen should equal SG total size. | |
1081 | * | |
1082 | * Returns the number of copied bytes. | |
1083 | * | |
1084 | **/ | |
1085 | static size_t sg_copy_end_to_buffer(struct scatterlist *sgl, unsigned int nents, | |
1086 | void *buf, size_t buflen, unsigned int skip) | |
1087 | { | |
1088 | unsigned int offset = 0; | |
1089 | unsigned int boffset = 0; | |
1090 | struct sg_mapping_iter miter; | |
1091 | unsigned long flags; | |
1092 | unsigned int sg_flags = SG_MITER_ATOMIC; | |
1093 | size_t total_buffer = buflen + skip; | |
1094 | ||
1095 | sg_flags |= SG_MITER_FROM_SG; | |
1096 | ||
1097 | sg_miter_start(&miter, sgl, nents, sg_flags); | |
1098 | ||
1099 | local_irq_save(flags); | |
1100 | ||
1101 | while (sg_miter_next(&miter) && offset < total_buffer) { | |
1102 | unsigned int len; | |
1103 | unsigned int ignore; | |
1104 | ||
1105 | if ((offset + miter.length) > skip) { | |
1106 | if (offset < skip) { | |
1107 | /* Copy part of this segment */ | |
1108 | ignore = skip - offset; | |
1109 | len = miter.length - ignore; | |
7260042b LN |
1110 | if (boffset + len > buflen) |
1111 | len = buflen - boffset; | |
497f2e6b LN |
1112 | memcpy(buf + boffset, miter.addr + ignore, len); |
1113 | } else { | |
7260042b | 1114 | /* Copy all of this segment (up to buflen) */ |
497f2e6b | 1115 | len = miter.length; |
7260042b LN |
1116 | if (boffset + len > buflen) |
1117 | len = buflen - boffset; | |
497f2e6b LN |
1118 | memcpy(buf + boffset, miter.addr, len); |
1119 | } | |
1120 | boffset += len; | |
1121 | } | |
1122 | offset += miter.length; | |
1123 | } | |
1124 | ||
1125 | sg_miter_stop(&miter); | |
1126 | ||
1127 | local_irq_restore(flags); | |
1128 | return boffset; | |
1129 | } | |
1130 | ||
9c4a7965 | 1131 | /* |
56af8cd4 | 1132 | * allocate and map the extended descriptor |
9c4a7965 | 1133 | */ |
4de9d0b5 LN |
1134 | static struct talitos_edesc *talitos_edesc_alloc(struct device *dev, |
1135 | struct scatterlist *src, | |
1136 | struct scatterlist *dst, | |
497f2e6b | 1137 | int hash_result, |
4de9d0b5 LN |
1138 | unsigned int cryptlen, |
1139 | unsigned int authsize, | |
1140 | int icv_stashing, | |
1141 | u32 cryptoflags) | |
9c4a7965 | 1142 | { |
56af8cd4 | 1143 | struct talitos_edesc *edesc; |
9c4a7965 | 1144 | int src_nents, dst_nents, alloc_len, dma_len; |
4de9d0b5 LN |
1145 | int src_chained, dst_chained = 0; |
1146 | gfp_t flags = cryptoflags & CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL : | |
586725f8 | 1147 | GFP_ATOMIC; |
9c4a7965 | 1148 | |
4de9d0b5 LN |
1149 | if (cryptlen + authsize > TALITOS_MAX_DATA_LEN) { |
1150 | dev_err(dev, "length exceeds h/w max limit\n"); | |
9c4a7965 KP |
1151 | return ERR_PTR(-EINVAL); |
1152 | } | |
1153 | ||
4de9d0b5 | 1154 | src_nents = sg_count(src, cryptlen + authsize, &src_chained); |
9c4a7965 KP |
1155 | src_nents = (src_nents == 1) ? 0 : src_nents; |
1156 | ||
497f2e6b LN |
1157 | if (hash_result) { |
1158 | dst_nents = 0; | |
9c4a7965 | 1159 | } else { |
497f2e6b LN |
1160 | if (dst == src) { |
1161 | dst_nents = src_nents; | |
1162 | } else { | |
1163 | dst_nents = sg_count(dst, cryptlen + authsize, | |
1164 | &dst_chained); | |
1165 | dst_nents = (dst_nents == 1) ? 0 : dst_nents; | |
1166 | } | |
9c4a7965 KP |
1167 | } |
1168 | ||
1169 | /* | |
1170 | * allocate space for base edesc plus the link tables, | |
f3c85bc1 | 1171 | * allowing for two separate entries for ICV and generated ICV (+ 2), |
9c4a7965 KP |
1172 | * and the ICV data itself |
1173 | */ | |
56af8cd4 | 1174 | alloc_len = sizeof(struct talitos_edesc); |
9c4a7965 | 1175 | if (src_nents || dst_nents) { |
f3c85bc1 | 1176 | dma_len = (src_nents + dst_nents + 2) * |
4de9d0b5 | 1177 | sizeof(struct talitos_ptr) + authsize; |
9c4a7965 KP |
1178 | alloc_len += dma_len; |
1179 | } else { | |
1180 | dma_len = 0; | |
4de9d0b5 | 1181 | alloc_len += icv_stashing ? authsize : 0; |
9c4a7965 KP |
1182 | } |
1183 | ||
586725f8 | 1184 | edesc = kmalloc(alloc_len, GFP_DMA | flags); |
9c4a7965 | 1185 | if (!edesc) { |
4de9d0b5 | 1186 | dev_err(dev, "could not allocate edescriptor\n"); |
9c4a7965 KP |
1187 | return ERR_PTR(-ENOMEM); |
1188 | } | |
1189 | ||
1190 | edesc->src_nents = src_nents; | |
1191 | edesc->dst_nents = dst_nents; | |
4de9d0b5 LN |
1192 | edesc->src_is_chained = src_chained; |
1193 | edesc->dst_is_chained = dst_chained; | |
9c4a7965 | 1194 | edesc->dma_len = dma_len; |
497f2e6b LN |
1195 | if (dma_len) |
1196 | edesc->dma_link_tbl = dma_map_single(dev, &edesc->link_tbl[0], | |
1197 | edesc->dma_len, | |
1198 | DMA_BIDIRECTIONAL); | |
9c4a7965 KP |
1199 | |
1200 | return edesc; | |
1201 | } | |
1202 | ||
4de9d0b5 LN |
1203 | static struct talitos_edesc *aead_edesc_alloc(struct aead_request *areq, |
1204 | int icv_stashing) | |
1205 | { | |
1206 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1207 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
1208 | ||
497f2e6b | 1209 | return talitos_edesc_alloc(ctx->dev, areq->src, areq->dst, 0, |
4de9d0b5 LN |
1210 | areq->cryptlen, ctx->authsize, icv_stashing, |
1211 | areq->base.flags); | |
1212 | } | |
1213 | ||
56af8cd4 | 1214 | static int aead_encrypt(struct aead_request *req) |
9c4a7965 KP |
1215 | { |
1216 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
1217 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1218 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1219 | |
1220 | /* allocate extended descriptor */ | |
4de9d0b5 | 1221 | edesc = aead_edesc_alloc(req, 0); |
9c4a7965 KP |
1222 | if (IS_ERR(edesc)) |
1223 | return PTR_ERR(edesc); | |
1224 | ||
1225 | /* set encrypt */ | |
70bcaca7 | 1226 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 KP |
1227 | |
1228 | return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_encrypt_done); | |
1229 | } | |
1230 | ||
56af8cd4 | 1231 | static int aead_decrypt(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); | |
1235 | unsigned int authsize = ctx->authsize; | |
fe5720e2 | 1236 | struct talitos_private *priv = dev_get_drvdata(ctx->dev); |
56af8cd4 | 1237 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1238 | struct scatterlist *sg; |
1239 | void *icvdata; | |
1240 | ||
1241 | req->cryptlen -= authsize; | |
1242 | ||
1243 | /* allocate extended descriptor */ | |
4de9d0b5 | 1244 | edesc = aead_edesc_alloc(req, 1); |
9c4a7965 KP |
1245 | if (IS_ERR(edesc)) |
1246 | return PTR_ERR(edesc); | |
1247 | ||
fe5720e2 | 1248 | if ((priv->features & TALITOS_FTR_HW_AUTH_CHECK) && |
e938e465 KP |
1249 | ((!edesc->src_nents && !edesc->dst_nents) || |
1250 | priv->features & TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT)) { | |
9c4a7965 | 1251 | |
fe5720e2 | 1252 | /* decrypt and check the ICV */ |
e938e465 KP |
1253 | edesc->desc.hdr = ctx->desc_hdr_template | |
1254 | DESC_HDR_DIR_INBOUND | | |
fe5720e2 | 1255 | DESC_HDR_MODE1_MDEU_CICV; |
9c4a7965 | 1256 | |
fe5720e2 KP |
1257 | /* reset integrity check result bits */ |
1258 | edesc->desc.hdr_lo = 0; | |
9c4a7965 | 1259 | |
e938e465 KP |
1260 | return ipsec_esp(edesc, req, NULL, 0, |
1261 | ipsec_esp_decrypt_hwauth_done); | |
fe5720e2 | 1262 | |
e938e465 | 1263 | } |
fe5720e2 | 1264 | |
e938e465 KP |
1265 | /* Have to check the ICV with software */ |
1266 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
fe5720e2 | 1267 | |
e938e465 KP |
1268 | /* stash incoming ICV for later cmp with ICV generated by the h/w */ |
1269 | if (edesc->dma_len) | |
1270 | icvdata = &edesc->link_tbl[edesc->src_nents + | |
1271 | edesc->dst_nents + 2]; | |
1272 | else | |
1273 | icvdata = &edesc->link_tbl[0]; | |
fe5720e2 | 1274 | |
e938e465 | 1275 | sg = sg_last(req->src, edesc->src_nents ? : 1); |
fe5720e2 | 1276 | |
e938e465 KP |
1277 | memcpy(icvdata, (char *)sg_virt(sg) + sg->length - ctx->authsize, |
1278 | ctx->authsize); | |
fe5720e2 | 1279 | |
e938e465 | 1280 | return ipsec_esp(edesc, req, NULL, 0, ipsec_esp_decrypt_swauth_done); |
9c4a7965 KP |
1281 | } |
1282 | ||
56af8cd4 | 1283 | static int aead_givencrypt(struct aead_givcrypt_request *req) |
9c4a7965 KP |
1284 | { |
1285 | struct aead_request *areq = &req->areq; | |
1286 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); | |
1287 | struct talitos_ctx *ctx = crypto_aead_ctx(authenc); | |
56af8cd4 | 1288 | struct talitos_edesc *edesc; |
9c4a7965 KP |
1289 | |
1290 | /* allocate extended descriptor */ | |
4de9d0b5 | 1291 | edesc = aead_edesc_alloc(areq, 0); |
9c4a7965 KP |
1292 | if (IS_ERR(edesc)) |
1293 | return PTR_ERR(edesc); | |
1294 | ||
1295 | /* set encrypt */ | |
70bcaca7 | 1296 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; |
9c4a7965 KP |
1297 | |
1298 | memcpy(req->giv, ctx->iv, crypto_aead_ivsize(authenc)); | |
ba95487d KP |
1299 | /* avoid consecutive packets going out with same IV */ |
1300 | *(__be64 *)req->giv ^= cpu_to_be64(req->seq); | |
9c4a7965 KP |
1301 | |
1302 | return ipsec_esp(edesc, areq, req->giv, req->seq, | |
1303 | ipsec_esp_encrypt_done); | |
1304 | } | |
1305 | ||
4de9d0b5 LN |
1306 | static int ablkcipher_setkey(struct crypto_ablkcipher *cipher, |
1307 | const u8 *key, unsigned int keylen) | |
1308 | { | |
1309 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
4de9d0b5 LN |
1310 | |
1311 | memcpy(&ctx->key, key, keylen); | |
1312 | ctx->keylen = keylen; | |
1313 | ||
1314 | return 0; | |
4de9d0b5 LN |
1315 | } |
1316 | ||
1317 | static void common_nonsnoop_unmap(struct device *dev, | |
1318 | struct talitos_edesc *edesc, | |
1319 | struct ablkcipher_request *areq) | |
1320 | { | |
1321 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1322 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], DMA_TO_DEVICE); | |
1323 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], DMA_TO_DEVICE); | |
1324 | ||
1325 | talitos_sg_unmap(dev, edesc, areq->src, areq->dst); | |
1326 | ||
1327 | if (edesc->dma_len) | |
1328 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1329 | DMA_BIDIRECTIONAL); | |
1330 | } | |
1331 | ||
1332 | static void ablkcipher_done(struct device *dev, | |
1333 | struct talitos_desc *desc, void *context, | |
1334 | int err) | |
1335 | { | |
1336 | struct ablkcipher_request *areq = context; | |
19bbbc63 KP |
1337 | struct talitos_edesc *edesc; |
1338 | ||
1339 | edesc = container_of(desc, struct talitos_edesc, desc); | |
4de9d0b5 LN |
1340 | |
1341 | common_nonsnoop_unmap(dev, edesc, areq); | |
1342 | ||
1343 | kfree(edesc); | |
1344 | ||
1345 | areq->base.complete(&areq->base, err); | |
1346 | } | |
1347 | ||
1348 | static int common_nonsnoop(struct talitos_edesc *edesc, | |
1349 | struct ablkcipher_request *areq, | |
4de9d0b5 LN |
1350 | void (*callback) (struct device *dev, |
1351 | struct talitos_desc *desc, | |
1352 | void *context, int error)) | |
1353 | { | |
1354 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1355 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1356 | struct device *dev = ctx->dev; | |
1357 | struct talitos_desc *desc = &edesc->desc; | |
1358 | unsigned int cryptlen = areq->nbytes; | |
1359 | unsigned int ivsize; | |
1360 | int sg_count, ret; | |
1361 | ||
1362 | /* first DWORD empty */ | |
1363 | desc->ptr[0].len = 0; | |
81eb024c | 1364 | to_talitos_ptr(&desc->ptr[0], 0); |
4de9d0b5 LN |
1365 | desc->ptr[0].j_extent = 0; |
1366 | ||
1367 | /* cipher iv */ | |
1368 | ivsize = crypto_ablkcipher_ivsize(cipher); | |
febec542 | 1369 | map_single_talitos_ptr(dev, &desc->ptr[1], ivsize, areq->info, 0, |
4de9d0b5 LN |
1370 | DMA_TO_DEVICE); |
1371 | ||
1372 | /* cipher key */ | |
1373 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1374 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1375 | ||
1376 | /* | |
1377 | * cipher in | |
1378 | */ | |
1379 | desc->ptr[3].len = cpu_to_be16(cryptlen); | |
1380 | desc->ptr[3].j_extent = 0; | |
1381 | ||
1382 | sg_count = talitos_map_sg(dev, areq->src, edesc->src_nents ? : 1, | |
1383 | (areq->src == areq->dst) ? DMA_BIDIRECTIONAL | |
1384 | : DMA_TO_DEVICE, | |
1385 | edesc->src_is_chained); | |
1386 | ||
1387 | if (sg_count == 1) { | |
81eb024c | 1388 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(areq->src)); |
4de9d0b5 LN |
1389 | } else { |
1390 | sg_count = sg_to_link_tbl(areq->src, sg_count, cryptlen, | |
1391 | &edesc->link_tbl[0]); | |
1392 | if (sg_count > 1) { | |
81eb024c | 1393 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); |
4de9d0b5 | 1394 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; |
e938e465 KP |
1395 | dma_sync_single_for_device(dev, edesc->dma_link_tbl, |
1396 | edesc->dma_len, | |
1397 | DMA_BIDIRECTIONAL); | |
4de9d0b5 LN |
1398 | } else { |
1399 | /* Only one segment now, so no link tbl needed */ | |
81eb024c KP |
1400 | to_talitos_ptr(&desc->ptr[3], |
1401 | sg_dma_address(areq->src)); | |
4de9d0b5 LN |
1402 | } |
1403 | } | |
1404 | ||
1405 | /* cipher out */ | |
1406 | desc->ptr[4].len = cpu_to_be16(cryptlen); | |
1407 | desc->ptr[4].j_extent = 0; | |
1408 | ||
1409 | if (areq->src != areq->dst) | |
1410 | sg_count = talitos_map_sg(dev, areq->dst, | |
1411 | edesc->dst_nents ? : 1, | |
1412 | DMA_FROM_DEVICE, | |
1413 | edesc->dst_is_chained); | |
1414 | ||
1415 | if (sg_count == 1) { | |
81eb024c | 1416 | to_talitos_ptr(&desc->ptr[4], sg_dma_address(areq->dst)); |
4de9d0b5 LN |
1417 | } else { |
1418 | struct talitos_ptr *link_tbl_ptr = | |
1419 | &edesc->link_tbl[edesc->src_nents + 1]; | |
1420 | ||
81eb024c KP |
1421 | to_talitos_ptr(&desc->ptr[4], edesc->dma_link_tbl + |
1422 | (edesc->src_nents + 1) * | |
1423 | sizeof(struct talitos_ptr)); | |
4de9d0b5 | 1424 | desc->ptr[4].j_extent |= DESC_PTR_LNKTBL_JUMP; |
4de9d0b5 LN |
1425 | sg_count = sg_to_link_tbl(areq->dst, sg_count, cryptlen, |
1426 | link_tbl_ptr); | |
1427 | dma_sync_single_for_device(ctx->dev, edesc->dma_link_tbl, | |
1428 | edesc->dma_len, DMA_BIDIRECTIONAL); | |
1429 | } | |
1430 | ||
1431 | /* iv out */ | |
1432 | map_single_talitos_ptr(dev, &desc->ptr[5], ivsize, ctx->iv, 0, | |
1433 | DMA_FROM_DEVICE); | |
1434 | ||
1435 | /* last DWORD empty */ | |
1436 | desc->ptr[6].len = 0; | |
81eb024c | 1437 | to_talitos_ptr(&desc->ptr[6], 0); |
4de9d0b5 LN |
1438 | desc->ptr[6].j_extent = 0; |
1439 | ||
5228f0f7 | 1440 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
4de9d0b5 LN |
1441 | if (ret != -EINPROGRESS) { |
1442 | common_nonsnoop_unmap(dev, edesc, areq); | |
1443 | kfree(edesc); | |
1444 | } | |
1445 | return ret; | |
1446 | } | |
1447 | ||
e938e465 KP |
1448 | static struct talitos_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request * |
1449 | areq) | |
4de9d0b5 LN |
1450 | { |
1451 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1452 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1453 | ||
497f2e6b LN |
1454 | return talitos_edesc_alloc(ctx->dev, areq->src, areq->dst, 0, |
1455 | areq->nbytes, 0, 0, areq->base.flags); | |
4de9d0b5 LN |
1456 | } |
1457 | ||
1458 | static int ablkcipher_encrypt(struct ablkcipher_request *areq) | |
1459 | { | |
1460 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1461 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1462 | struct talitos_edesc *edesc; | |
1463 | ||
1464 | /* allocate extended descriptor */ | |
1465 | edesc = ablkcipher_edesc_alloc(areq); | |
1466 | if (IS_ERR(edesc)) | |
1467 | return PTR_ERR(edesc); | |
1468 | ||
1469 | /* set encrypt */ | |
1470 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_MODE0_ENCRYPT; | |
1471 | ||
febec542 | 1472 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1473 | } |
1474 | ||
1475 | static int ablkcipher_decrypt(struct ablkcipher_request *areq) | |
1476 | { | |
1477 | struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); | |
1478 | struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher); | |
1479 | struct talitos_edesc *edesc; | |
1480 | ||
1481 | /* allocate extended descriptor */ | |
1482 | edesc = ablkcipher_edesc_alloc(areq); | |
1483 | if (IS_ERR(edesc)) | |
1484 | return PTR_ERR(edesc); | |
1485 | ||
1486 | edesc->desc.hdr = ctx->desc_hdr_template | DESC_HDR_DIR_INBOUND; | |
1487 | ||
febec542 | 1488 | return common_nonsnoop(edesc, areq, ablkcipher_done); |
4de9d0b5 LN |
1489 | } |
1490 | ||
497f2e6b LN |
1491 | static void common_nonsnoop_hash_unmap(struct device *dev, |
1492 | struct talitos_edesc *edesc, | |
1493 | struct ahash_request *areq) | |
1494 | { | |
1495 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1496 | ||
1497 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[5], DMA_FROM_DEVICE); | |
1498 | ||
1499 | /* When using hashctx-in, must unmap it. */ | |
1500 | if (edesc->desc.ptr[1].len) | |
1501 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[1], | |
1502 | DMA_TO_DEVICE); | |
1503 | ||
1504 | if (edesc->desc.ptr[2].len) | |
1505 | unmap_single_talitos_ptr(dev, &edesc->desc.ptr[2], | |
1506 | DMA_TO_DEVICE); | |
1507 | ||
1508 | talitos_sg_unmap(dev, edesc, req_ctx->psrc, NULL); | |
1509 | ||
1510 | if (edesc->dma_len) | |
1511 | dma_unmap_single(dev, edesc->dma_link_tbl, edesc->dma_len, | |
1512 | DMA_BIDIRECTIONAL); | |
1513 | ||
1514 | } | |
1515 | ||
1516 | static void ahash_done(struct device *dev, | |
1517 | struct talitos_desc *desc, void *context, | |
1518 | int err) | |
1519 | { | |
1520 | struct ahash_request *areq = context; | |
1521 | struct talitos_edesc *edesc = | |
1522 | container_of(desc, struct talitos_edesc, desc); | |
1523 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1524 | ||
1525 | if (!req_ctx->last && req_ctx->to_hash_later) { | |
1526 | /* Position any partial block for next update/final/finup */ | |
1527 | memcpy(req_ctx->buf, req_ctx->bufnext, req_ctx->to_hash_later); | |
5e833bc4 | 1528 | req_ctx->nbuf = req_ctx->to_hash_later; |
497f2e6b LN |
1529 | } |
1530 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1531 | ||
1532 | kfree(edesc); | |
1533 | ||
1534 | areq->base.complete(&areq->base, err); | |
1535 | } | |
1536 | ||
1537 | static int common_nonsnoop_hash(struct talitos_edesc *edesc, | |
1538 | struct ahash_request *areq, unsigned int length, | |
1539 | void (*callback) (struct device *dev, | |
1540 | struct talitos_desc *desc, | |
1541 | void *context, int error)) | |
1542 | { | |
1543 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1544 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1545 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1546 | struct device *dev = ctx->dev; | |
1547 | struct talitos_desc *desc = &edesc->desc; | |
1548 | int sg_count, ret; | |
1549 | ||
1550 | /* first DWORD empty */ | |
1551 | desc->ptr[0] = zero_entry; | |
1552 | ||
60f208d7 KP |
1553 | /* hash context in */ |
1554 | if (!req_ctx->first || req_ctx->swinit) { | |
497f2e6b LN |
1555 | map_single_talitos_ptr(dev, &desc->ptr[1], |
1556 | req_ctx->hw_context_size, | |
1557 | (char *)req_ctx->hw_context, 0, | |
1558 | DMA_TO_DEVICE); | |
60f208d7 | 1559 | req_ctx->swinit = 0; |
497f2e6b LN |
1560 | } else { |
1561 | desc->ptr[1] = zero_entry; | |
1562 | /* Indicate next op is not the first. */ | |
1563 | req_ctx->first = 0; | |
1564 | } | |
1565 | ||
1566 | /* HMAC key */ | |
1567 | if (ctx->keylen) | |
1568 | map_single_talitos_ptr(dev, &desc->ptr[2], ctx->keylen, | |
1569 | (char *)&ctx->key, 0, DMA_TO_DEVICE); | |
1570 | else | |
1571 | desc->ptr[2] = zero_entry; | |
1572 | ||
1573 | /* | |
1574 | * data in | |
1575 | */ | |
1576 | desc->ptr[3].len = cpu_to_be16(length); | |
1577 | desc->ptr[3].j_extent = 0; | |
1578 | ||
1579 | sg_count = talitos_map_sg(dev, req_ctx->psrc, | |
1580 | edesc->src_nents ? : 1, | |
1581 | DMA_TO_DEVICE, | |
1582 | edesc->src_is_chained); | |
1583 | ||
1584 | if (sg_count == 1) { | |
1585 | to_talitos_ptr(&desc->ptr[3], sg_dma_address(req_ctx->psrc)); | |
1586 | } else { | |
1587 | sg_count = sg_to_link_tbl(req_ctx->psrc, sg_count, length, | |
1588 | &edesc->link_tbl[0]); | |
1589 | if (sg_count > 1) { | |
1590 | desc->ptr[3].j_extent |= DESC_PTR_LNKTBL_JUMP; | |
1591 | to_talitos_ptr(&desc->ptr[3], edesc->dma_link_tbl); | |
1592 | dma_sync_single_for_device(ctx->dev, | |
1593 | edesc->dma_link_tbl, | |
1594 | edesc->dma_len, | |
1595 | DMA_BIDIRECTIONAL); | |
1596 | } else { | |
1597 | /* Only one segment now, so no link tbl needed */ | |
1598 | to_talitos_ptr(&desc->ptr[3], | |
1599 | sg_dma_address(req_ctx->psrc)); | |
1600 | } | |
1601 | } | |
1602 | ||
1603 | /* fifth DWORD empty */ | |
1604 | desc->ptr[4] = zero_entry; | |
1605 | ||
1606 | /* hash/HMAC out -or- hash context out */ | |
1607 | if (req_ctx->last) | |
1608 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1609 | crypto_ahash_digestsize(tfm), | |
1610 | areq->result, 0, DMA_FROM_DEVICE); | |
1611 | else | |
1612 | map_single_talitos_ptr(dev, &desc->ptr[5], | |
1613 | req_ctx->hw_context_size, | |
1614 | req_ctx->hw_context, 0, DMA_FROM_DEVICE); | |
1615 | ||
1616 | /* last DWORD empty */ | |
1617 | desc->ptr[6] = zero_entry; | |
1618 | ||
5228f0f7 | 1619 | ret = talitos_submit(dev, ctx->ch, desc, callback, areq); |
497f2e6b LN |
1620 | if (ret != -EINPROGRESS) { |
1621 | common_nonsnoop_hash_unmap(dev, edesc, areq); | |
1622 | kfree(edesc); | |
1623 | } | |
1624 | return ret; | |
1625 | } | |
1626 | ||
1627 | static struct talitos_edesc *ahash_edesc_alloc(struct ahash_request *areq, | |
1628 | unsigned int nbytes) | |
1629 | { | |
1630 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1631 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1632 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1633 | ||
1634 | return talitos_edesc_alloc(ctx->dev, req_ctx->psrc, NULL, 1, | |
1635 | nbytes, 0, 0, areq->base.flags); | |
1636 | } | |
1637 | ||
1638 | static int ahash_init(struct ahash_request *areq) | |
1639 | { | |
1640 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1641 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1642 | ||
1643 | /* Initialize the context */ | |
5e833bc4 | 1644 | req_ctx->nbuf = 0; |
60f208d7 KP |
1645 | req_ctx->first = 1; /* first indicates h/w must init its context */ |
1646 | req_ctx->swinit = 0; /* assume h/w init of context */ | |
497f2e6b LN |
1647 | req_ctx->hw_context_size = |
1648 | (crypto_ahash_digestsize(tfm) <= SHA256_DIGEST_SIZE) | |
1649 | ? TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256 | |
1650 | : TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512; | |
1651 | ||
1652 | return 0; | |
1653 | } | |
1654 | ||
60f208d7 KP |
1655 | /* |
1656 | * on h/w without explicit sha224 support, we initialize h/w context | |
1657 | * manually with sha224 constants, and tell it to run sha256. | |
1658 | */ | |
1659 | static int ahash_init_sha224_swinit(struct ahash_request *areq) | |
1660 | { | |
1661 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1662 | ||
1663 | ahash_init(areq); | |
1664 | req_ctx->swinit = 1;/* prevent h/w initting context with sha256 values*/ | |
1665 | ||
a752447a KP |
1666 | req_ctx->hw_context[0] = SHA224_H0; |
1667 | req_ctx->hw_context[1] = SHA224_H1; | |
1668 | req_ctx->hw_context[2] = SHA224_H2; | |
1669 | req_ctx->hw_context[3] = SHA224_H3; | |
1670 | req_ctx->hw_context[4] = SHA224_H4; | |
1671 | req_ctx->hw_context[5] = SHA224_H5; | |
1672 | req_ctx->hw_context[6] = SHA224_H6; | |
1673 | req_ctx->hw_context[7] = SHA224_H7; | |
60f208d7 KP |
1674 | |
1675 | /* init 64-bit count */ | |
1676 | req_ctx->hw_context[8] = 0; | |
1677 | req_ctx->hw_context[9] = 0; | |
1678 | ||
1679 | return 0; | |
1680 | } | |
1681 | ||
497f2e6b LN |
1682 | static int ahash_process_req(struct ahash_request *areq, unsigned int nbytes) |
1683 | { | |
1684 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq); | |
1685 | struct talitos_ctx *ctx = crypto_ahash_ctx(tfm); | |
1686 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1687 | struct talitos_edesc *edesc; | |
1688 | unsigned int blocksize = | |
1689 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1690 | unsigned int nbytes_to_hash; | |
1691 | unsigned int to_hash_later; | |
5e833bc4 | 1692 | unsigned int nsg; |
497f2e6b LN |
1693 | int chained; |
1694 | ||
5e833bc4 LN |
1695 | if (!req_ctx->last && (nbytes + req_ctx->nbuf <= blocksize)) { |
1696 | /* Buffer up to one whole block */ | |
497f2e6b LN |
1697 | sg_copy_to_buffer(areq->src, |
1698 | sg_count(areq->src, nbytes, &chained), | |
5e833bc4 LN |
1699 | req_ctx->buf + req_ctx->nbuf, nbytes); |
1700 | req_ctx->nbuf += nbytes; | |
497f2e6b LN |
1701 | return 0; |
1702 | } | |
1703 | ||
5e833bc4 LN |
1704 | /* At least (blocksize + 1) bytes are available to hash */ |
1705 | nbytes_to_hash = nbytes + req_ctx->nbuf; | |
1706 | to_hash_later = nbytes_to_hash & (blocksize - 1); | |
1707 | ||
1708 | if (req_ctx->last) | |
1709 | to_hash_later = 0; | |
1710 | else if (to_hash_later) | |
1711 | /* There is a partial block. Hash the full block(s) now */ | |
1712 | nbytes_to_hash -= to_hash_later; | |
1713 | else { | |
1714 | /* Keep one block buffered */ | |
1715 | nbytes_to_hash -= blocksize; | |
1716 | to_hash_later = blocksize; | |
1717 | } | |
1718 | ||
1719 | /* Chain in any previously buffered data */ | |
1720 | if (req_ctx->nbuf) { | |
1721 | nsg = (req_ctx->nbuf < nbytes_to_hash) ? 2 : 1; | |
1722 | sg_init_table(req_ctx->bufsl, nsg); | |
1723 | sg_set_buf(req_ctx->bufsl, req_ctx->buf, req_ctx->nbuf); | |
1724 | if (nsg > 1) | |
1725 | scatterwalk_sg_chain(req_ctx->bufsl, 2, areq->src); | |
497f2e6b | 1726 | req_ctx->psrc = req_ctx->bufsl; |
5e833bc4 | 1727 | } else |
497f2e6b | 1728 | req_ctx->psrc = areq->src; |
5e833bc4 LN |
1729 | |
1730 | if (to_hash_later) { | |
1731 | int nents = sg_count(areq->src, nbytes, &chained); | |
1732 | sg_copy_end_to_buffer(areq->src, nents, | |
1733 | req_ctx->bufnext, | |
1734 | to_hash_later, | |
1735 | nbytes - to_hash_later); | |
497f2e6b | 1736 | } |
5e833bc4 | 1737 | req_ctx->to_hash_later = to_hash_later; |
497f2e6b | 1738 | |
5e833bc4 | 1739 | /* Allocate extended descriptor */ |
497f2e6b LN |
1740 | edesc = ahash_edesc_alloc(areq, nbytes_to_hash); |
1741 | if (IS_ERR(edesc)) | |
1742 | return PTR_ERR(edesc); | |
1743 | ||
1744 | edesc->desc.hdr = ctx->desc_hdr_template; | |
1745 | ||
1746 | /* On last one, request SEC to pad; otherwise continue */ | |
1747 | if (req_ctx->last) | |
1748 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_PAD; | |
1749 | else | |
1750 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_CONT; | |
1751 | ||
60f208d7 KP |
1752 | /* request SEC to INIT hash. */ |
1753 | if (req_ctx->first && !req_ctx->swinit) | |
497f2e6b LN |
1754 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_INIT; |
1755 | ||
1756 | /* When the tfm context has a keylen, it's an HMAC. | |
1757 | * A first or last (ie. not middle) descriptor must request HMAC. | |
1758 | */ | |
1759 | if (ctx->keylen && (req_ctx->first || req_ctx->last)) | |
1760 | edesc->desc.hdr |= DESC_HDR_MODE0_MDEU_HMAC; | |
1761 | ||
1762 | return common_nonsnoop_hash(edesc, areq, nbytes_to_hash, | |
1763 | ahash_done); | |
1764 | } | |
1765 | ||
1766 | static int ahash_update(struct ahash_request *areq) | |
1767 | { | |
1768 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1769 | ||
1770 | req_ctx->last = 0; | |
1771 | ||
1772 | return ahash_process_req(areq, areq->nbytes); | |
1773 | } | |
1774 | ||
1775 | static int ahash_final(struct ahash_request *areq) | |
1776 | { | |
1777 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1778 | ||
1779 | req_ctx->last = 1; | |
1780 | ||
1781 | return ahash_process_req(areq, 0); | |
1782 | } | |
1783 | ||
1784 | static int ahash_finup(struct ahash_request *areq) | |
1785 | { | |
1786 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
1787 | ||
1788 | req_ctx->last = 1; | |
1789 | ||
1790 | return ahash_process_req(areq, areq->nbytes); | |
1791 | } | |
1792 | ||
1793 | static int ahash_digest(struct ahash_request *areq) | |
1794 | { | |
1795 | struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq); | |
60f208d7 | 1796 | struct crypto_ahash *ahash = crypto_ahash_reqtfm(areq); |
497f2e6b | 1797 | |
60f208d7 | 1798 | ahash->init(areq); |
497f2e6b LN |
1799 | req_ctx->last = 1; |
1800 | ||
1801 | return ahash_process_req(areq, areq->nbytes); | |
1802 | } | |
1803 | ||
79b3a418 LN |
1804 | struct keyhash_result { |
1805 | struct completion completion; | |
1806 | int err; | |
1807 | }; | |
1808 | ||
1809 | static void keyhash_complete(struct crypto_async_request *req, int err) | |
1810 | { | |
1811 | struct keyhash_result *res = req->data; | |
1812 | ||
1813 | if (err == -EINPROGRESS) | |
1814 | return; | |
1815 | ||
1816 | res->err = err; | |
1817 | complete(&res->completion); | |
1818 | } | |
1819 | ||
1820 | static int keyhash(struct crypto_ahash *tfm, const u8 *key, unsigned int keylen, | |
1821 | u8 *hash) | |
1822 | { | |
1823 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1824 | ||
1825 | struct scatterlist sg[1]; | |
1826 | struct ahash_request *req; | |
1827 | struct keyhash_result hresult; | |
1828 | int ret; | |
1829 | ||
1830 | init_completion(&hresult.completion); | |
1831 | ||
1832 | req = ahash_request_alloc(tfm, GFP_KERNEL); | |
1833 | if (!req) | |
1834 | return -ENOMEM; | |
1835 | ||
1836 | /* Keep tfm keylen == 0 during hash of the long key */ | |
1837 | ctx->keylen = 0; | |
1838 | ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, | |
1839 | keyhash_complete, &hresult); | |
1840 | ||
1841 | sg_init_one(&sg[0], key, keylen); | |
1842 | ||
1843 | ahash_request_set_crypt(req, sg, hash, keylen); | |
1844 | ret = crypto_ahash_digest(req); | |
1845 | switch (ret) { | |
1846 | case 0: | |
1847 | break; | |
1848 | case -EINPROGRESS: | |
1849 | case -EBUSY: | |
1850 | ret = wait_for_completion_interruptible( | |
1851 | &hresult.completion); | |
1852 | if (!ret) | |
1853 | ret = hresult.err; | |
1854 | break; | |
1855 | default: | |
1856 | break; | |
1857 | } | |
1858 | ahash_request_free(req); | |
1859 | ||
1860 | return ret; | |
1861 | } | |
1862 | ||
1863 | static int ahash_setkey(struct crypto_ahash *tfm, const u8 *key, | |
1864 | unsigned int keylen) | |
1865 | { | |
1866 | struct talitos_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm)); | |
1867 | unsigned int blocksize = | |
1868 | crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); | |
1869 | unsigned int digestsize = crypto_ahash_digestsize(tfm); | |
1870 | unsigned int keysize = keylen; | |
1871 | u8 hash[SHA512_DIGEST_SIZE]; | |
1872 | int ret; | |
1873 | ||
1874 | if (keylen <= blocksize) | |
1875 | memcpy(ctx->key, key, keysize); | |
1876 | else { | |
1877 | /* Must get the hash of the long key */ | |
1878 | ret = keyhash(tfm, key, keylen, hash); | |
1879 | ||
1880 | if (ret) { | |
1881 | crypto_ahash_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
1882 | return -EINVAL; | |
1883 | } | |
1884 | ||
1885 | keysize = digestsize; | |
1886 | memcpy(ctx->key, hash, digestsize); | |
1887 | } | |
1888 | ||
1889 | ctx->keylen = keysize; | |
1890 | ||
1891 | return 0; | |
1892 | } | |
1893 | ||
1894 | ||
9c4a7965 | 1895 | struct talitos_alg_template { |
d5e4aaef LN |
1896 | u32 type; |
1897 | union { | |
1898 | struct crypto_alg crypto; | |
acbf7c62 | 1899 | struct ahash_alg hash; |
d5e4aaef | 1900 | } alg; |
9c4a7965 KP |
1901 | __be32 desc_hdr_template; |
1902 | }; | |
1903 | ||
1904 | static struct talitos_alg_template driver_algs[] = { | |
56af8cd4 | 1905 | /* AEAD algorithms. These use a single-pass ipsec_esp descriptor */ |
d5e4aaef LN |
1906 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1907 | .alg.crypto = { | |
56af8cd4 LN |
1908 | .cra_name = "authenc(hmac(sha1),cbc(aes))", |
1909 | .cra_driver_name = "authenc-hmac-sha1-cbc-aes-talitos", | |
1910 | .cra_blocksize = AES_BLOCK_SIZE, | |
1911 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1912 | .cra_type = &crypto_aead_type, | |
1913 | .cra_aead = { | |
1914 | .setkey = aead_setkey, | |
1915 | .setauthsize = aead_setauthsize, | |
1916 | .encrypt = aead_encrypt, | |
1917 | .decrypt = aead_decrypt, | |
1918 | .givencrypt = aead_givencrypt, | |
1919 | .geniv = "<built-in>", | |
1920 | .ivsize = AES_BLOCK_SIZE, | |
1921 | .maxauthsize = SHA1_DIGEST_SIZE, | |
1922 | } | |
1923 | }, | |
9c4a7965 KP |
1924 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
1925 | DESC_HDR_SEL0_AESU | | |
1926 | DESC_HDR_MODE0_AESU_CBC | | |
1927 | DESC_HDR_SEL1_MDEUA | | |
1928 | DESC_HDR_MODE1_MDEU_INIT | | |
1929 | DESC_HDR_MODE1_MDEU_PAD | | |
1930 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
70bcaca7 | 1931 | }, |
d5e4aaef LN |
1932 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1933 | .alg.crypto = { | |
56af8cd4 LN |
1934 | .cra_name = "authenc(hmac(sha1),cbc(des3_ede))", |
1935 | .cra_driver_name = "authenc-hmac-sha1-cbc-3des-talitos", | |
1936 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
1937 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1938 | .cra_type = &crypto_aead_type, | |
1939 | .cra_aead = { | |
1940 | .setkey = aead_setkey, | |
1941 | .setauthsize = aead_setauthsize, | |
1942 | .encrypt = aead_encrypt, | |
1943 | .decrypt = aead_decrypt, | |
1944 | .givencrypt = aead_givencrypt, | |
1945 | .geniv = "<built-in>", | |
1946 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
1947 | .maxauthsize = SHA1_DIGEST_SIZE, | |
1948 | } | |
1949 | }, | |
70bcaca7 LN |
1950 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
1951 | DESC_HDR_SEL0_DEU | | |
1952 | DESC_HDR_MODE0_DEU_CBC | | |
1953 | DESC_HDR_MODE0_DEU_3DES | | |
1954 | DESC_HDR_SEL1_MDEUA | | |
1955 | DESC_HDR_MODE1_MDEU_INIT | | |
1956 | DESC_HDR_MODE1_MDEU_PAD | | |
1957 | DESC_HDR_MODE1_MDEU_SHA1_HMAC, | |
3952f17e | 1958 | }, |
357fb605 HG |
1959 | { .type = CRYPTO_ALG_TYPE_AEAD, |
1960 | .alg.crypto = { | |
1961 | .cra_name = "authenc(hmac(sha224),cbc(aes))", | |
1962 | .cra_driver_name = "authenc-hmac-sha224-cbc-aes-talitos", | |
1963 | .cra_blocksize = AES_BLOCK_SIZE, | |
1964 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1965 | .cra_type = &crypto_aead_type, | |
1966 | .cra_aead = { | |
1967 | .setkey = aead_setkey, | |
1968 | .setauthsize = aead_setauthsize, | |
1969 | .encrypt = aead_encrypt, | |
1970 | .decrypt = aead_decrypt, | |
1971 | .givencrypt = aead_givencrypt, | |
1972 | .geniv = "<built-in>", | |
1973 | .ivsize = AES_BLOCK_SIZE, | |
1974 | .maxauthsize = SHA224_DIGEST_SIZE, | |
1975 | } | |
1976 | }, | |
1977 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
1978 | DESC_HDR_SEL0_AESU | | |
1979 | DESC_HDR_MODE0_AESU_CBC | | |
1980 | DESC_HDR_SEL1_MDEUA | | |
1981 | DESC_HDR_MODE1_MDEU_INIT | | |
1982 | DESC_HDR_MODE1_MDEU_PAD | | |
1983 | DESC_HDR_MODE1_MDEU_SHA224_HMAC, | |
1984 | }, | |
1985 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
1986 | .alg.crypto = { | |
1987 | .cra_name = "authenc(hmac(sha224),cbc(des3_ede))", | |
1988 | .cra_driver_name = "authenc-hmac-sha224-cbc-3des-talitos", | |
1989 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
1990 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
1991 | .cra_type = &crypto_aead_type, | |
1992 | .cra_aead = { | |
1993 | .setkey = aead_setkey, | |
1994 | .setauthsize = aead_setauthsize, | |
1995 | .encrypt = aead_encrypt, | |
1996 | .decrypt = aead_decrypt, | |
1997 | .givencrypt = aead_givencrypt, | |
1998 | .geniv = "<built-in>", | |
1999 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2000 | .maxauthsize = SHA224_DIGEST_SIZE, | |
2001 | } | |
2002 | }, | |
2003 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2004 | DESC_HDR_SEL0_DEU | | |
2005 | DESC_HDR_MODE0_DEU_CBC | | |
2006 | DESC_HDR_MODE0_DEU_3DES | | |
2007 | DESC_HDR_SEL1_MDEUA | | |
2008 | DESC_HDR_MODE1_MDEU_INIT | | |
2009 | DESC_HDR_MODE1_MDEU_PAD | | |
2010 | DESC_HDR_MODE1_MDEU_SHA224_HMAC, | |
2011 | }, | |
d5e4aaef LN |
2012 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2013 | .alg.crypto = { | |
56af8cd4 LN |
2014 | .cra_name = "authenc(hmac(sha256),cbc(aes))", |
2015 | .cra_driver_name = "authenc-hmac-sha256-cbc-aes-talitos", | |
2016 | .cra_blocksize = AES_BLOCK_SIZE, | |
2017 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2018 | .cra_type = &crypto_aead_type, | |
2019 | .cra_aead = { | |
2020 | .setkey = aead_setkey, | |
2021 | .setauthsize = aead_setauthsize, | |
2022 | .encrypt = aead_encrypt, | |
2023 | .decrypt = aead_decrypt, | |
2024 | .givencrypt = aead_givencrypt, | |
2025 | .geniv = "<built-in>", | |
2026 | .ivsize = AES_BLOCK_SIZE, | |
2027 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2028 | } | |
2029 | }, | |
3952f17e LN |
2030 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2031 | DESC_HDR_SEL0_AESU | | |
2032 | DESC_HDR_MODE0_AESU_CBC | | |
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 LN |
2038 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2039 | .alg.crypto = { | |
56af8cd4 LN |
2040 | .cra_name = "authenc(hmac(sha256),cbc(des3_ede))", |
2041 | .cra_driver_name = "authenc-hmac-sha256-cbc-3des-talitos", | |
2042 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2043 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2044 | .cra_type = &crypto_aead_type, | |
2045 | .cra_aead = { | |
2046 | .setkey = aead_setkey, | |
2047 | .setauthsize = aead_setauthsize, | |
2048 | .encrypt = aead_encrypt, | |
2049 | .decrypt = aead_decrypt, | |
2050 | .givencrypt = aead_givencrypt, | |
2051 | .geniv = "<built-in>", | |
2052 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2053 | .maxauthsize = SHA256_DIGEST_SIZE, | |
2054 | } | |
2055 | }, | |
3952f17e LN |
2056 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2057 | DESC_HDR_SEL0_DEU | | |
2058 | DESC_HDR_MODE0_DEU_CBC | | |
2059 | DESC_HDR_MODE0_DEU_3DES | | |
2060 | DESC_HDR_SEL1_MDEUA | | |
2061 | DESC_HDR_MODE1_MDEU_INIT | | |
2062 | DESC_HDR_MODE1_MDEU_PAD | | |
2063 | DESC_HDR_MODE1_MDEU_SHA256_HMAC, | |
2064 | }, | |
d5e4aaef | 2065 | { .type = CRYPTO_ALG_TYPE_AEAD, |
357fb605 HG |
2066 | .alg.crypto = { |
2067 | .cra_name = "authenc(hmac(sha384),cbc(aes))", | |
2068 | .cra_driver_name = "authenc-hmac-sha384-cbc-aes-talitos", | |
2069 | .cra_blocksize = AES_BLOCK_SIZE, | |
2070 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2071 | .cra_type = &crypto_aead_type, | |
2072 | .cra_aead = { | |
2073 | .setkey = aead_setkey, | |
2074 | .setauthsize = aead_setauthsize, | |
2075 | .encrypt = aead_encrypt, | |
2076 | .decrypt = aead_decrypt, | |
2077 | .givencrypt = aead_givencrypt, | |
2078 | .geniv = "<built-in>", | |
2079 | .ivsize = AES_BLOCK_SIZE, | |
2080 | .maxauthsize = SHA384_DIGEST_SIZE, | |
2081 | } | |
2082 | }, | |
2083 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2084 | DESC_HDR_SEL0_AESU | | |
2085 | DESC_HDR_MODE0_AESU_CBC | | |
2086 | DESC_HDR_SEL1_MDEUB | | |
2087 | DESC_HDR_MODE1_MDEU_INIT | | |
2088 | DESC_HDR_MODE1_MDEU_PAD | | |
2089 | DESC_HDR_MODE1_MDEUB_SHA384_HMAC, | |
2090 | }, | |
2091 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2092 | .alg.crypto = { | |
2093 | .cra_name = "authenc(hmac(sha384),cbc(des3_ede))", | |
2094 | .cra_driver_name = "authenc-hmac-sha384-cbc-3des-talitos", | |
2095 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2096 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2097 | .cra_type = &crypto_aead_type, | |
2098 | .cra_aead = { | |
2099 | .setkey = aead_setkey, | |
2100 | .setauthsize = aead_setauthsize, | |
2101 | .encrypt = aead_encrypt, | |
2102 | .decrypt = aead_decrypt, | |
2103 | .givencrypt = aead_givencrypt, | |
2104 | .geniv = "<built-in>", | |
2105 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2106 | .maxauthsize = SHA384_DIGEST_SIZE, | |
2107 | } | |
2108 | }, | |
2109 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2110 | DESC_HDR_SEL0_DEU | | |
2111 | DESC_HDR_MODE0_DEU_CBC | | |
2112 | DESC_HDR_MODE0_DEU_3DES | | |
2113 | DESC_HDR_SEL1_MDEUB | | |
2114 | DESC_HDR_MODE1_MDEU_INIT | | |
2115 | DESC_HDR_MODE1_MDEU_PAD | | |
2116 | DESC_HDR_MODE1_MDEUB_SHA384_HMAC, | |
2117 | }, | |
2118 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2119 | .alg.crypto = { | |
2120 | .cra_name = "authenc(hmac(sha512),cbc(aes))", | |
2121 | .cra_driver_name = "authenc-hmac-sha512-cbc-aes-talitos", | |
2122 | .cra_blocksize = AES_BLOCK_SIZE, | |
2123 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2124 | .cra_type = &crypto_aead_type, | |
2125 | .cra_aead = { | |
2126 | .setkey = aead_setkey, | |
2127 | .setauthsize = aead_setauthsize, | |
2128 | .encrypt = aead_encrypt, | |
2129 | .decrypt = aead_decrypt, | |
2130 | .givencrypt = aead_givencrypt, | |
2131 | .geniv = "<built-in>", | |
2132 | .ivsize = AES_BLOCK_SIZE, | |
2133 | .maxauthsize = SHA512_DIGEST_SIZE, | |
2134 | } | |
2135 | }, | |
2136 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2137 | DESC_HDR_SEL0_AESU | | |
2138 | DESC_HDR_MODE0_AESU_CBC | | |
2139 | DESC_HDR_SEL1_MDEUB | | |
2140 | DESC_HDR_MODE1_MDEU_INIT | | |
2141 | DESC_HDR_MODE1_MDEU_PAD | | |
2142 | DESC_HDR_MODE1_MDEUB_SHA512_HMAC, | |
2143 | }, | |
2144 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
2145 | .alg.crypto = { | |
2146 | .cra_name = "authenc(hmac(sha512),cbc(des3_ede))", | |
2147 | .cra_driver_name = "authenc-hmac-sha512-cbc-3des-talitos", | |
2148 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2149 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2150 | .cra_type = &crypto_aead_type, | |
2151 | .cra_aead = { | |
2152 | .setkey = aead_setkey, | |
2153 | .setauthsize = aead_setauthsize, | |
2154 | .encrypt = aead_encrypt, | |
2155 | .decrypt = aead_decrypt, | |
2156 | .givencrypt = aead_givencrypt, | |
2157 | .geniv = "<built-in>", | |
2158 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2159 | .maxauthsize = SHA512_DIGEST_SIZE, | |
2160 | } | |
2161 | }, | |
2162 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | | |
2163 | DESC_HDR_SEL0_DEU | | |
2164 | DESC_HDR_MODE0_DEU_CBC | | |
2165 | DESC_HDR_MODE0_DEU_3DES | | |
2166 | DESC_HDR_SEL1_MDEUB | | |
2167 | DESC_HDR_MODE1_MDEU_INIT | | |
2168 | DESC_HDR_MODE1_MDEU_PAD | | |
2169 | DESC_HDR_MODE1_MDEUB_SHA512_HMAC, | |
2170 | }, | |
2171 | { .type = CRYPTO_ALG_TYPE_AEAD, | |
d5e4aaef | 2172 | .alg.crypto = { |
56af8cd4 LN |
2173 | .cra_name = "authenc(hmac(md5),cbc(aes))", |
2174 | .cra_driver_name = "authenc-hmac-md5-cbc-aes-talitos", | |
2175 | .cra_blocksize = AES_BLOCK_SIZE, | |
2176 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2177 | .cra_type = &crypto_aead_type, | |
2178 | .cra_aead = { | |
2179 | .setkey = aead_setkey, | |
2180 | .setauthsize = aead_setauthsize, | |
2181 | .encrypt = aead_encrypt, | |
2182 | .decrypt = aead_decrypt, | |
2183 | .givencrypt = aead_givencrypt, | |
2184 | .geniv = "<built-in>", | |
2185 | .ivsize = AES_BLOCK_SIZE, | |
2186 | .maxauthsize = MD5_DIGEST_SIZE, | |
2187 | } | |
2188 | }, | |
3952f17e LN |
2189 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2190 | DESC_HDR_SEL0_AESU | | |
2191 | DESC_HDR_MODE0_AESU_CBC | | |
2192 | DESC_HDR_SEL1_MDEUA | | |
2193 | DESC_HDR_MODE1_MDEU_INIT | | |
2194 | DESC_HDR_MODE1_MDEU_PAD | | |
2195 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
2196 | }, | |
d5e4aaef LN |
2197 | { .type = CRYPTO_ALG_TYPE_AEAD, |
2198 | .alg.crypto = { | |
56af8cd4 LN |
2199 | .cra_name = "authenc(hmac(md5),cbc(des3_ede))", |
2200 | .cra_driver_name = "authenc-hmac-md5-cbc-3des-talitos", | |
2201 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2202 | .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC, | |
2203 | .cra_type = &crypto_aead_type, | |
2204 | .cra_aead = { | |
2205 | .setkey = aead_setkey, | |
2206 | .setauthsize = aead_setauthsize, | |
2207 | .encrypt = aead_encrypt, | |
2208 | .decrypt = aead_decrypt, | |
2209 | .givencrypt = aead_givencrypt, | |
2210 | .geniv = "<built-in>", | |
2211 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2212 | .maxauthsize = MD5_DIGEST_SIZE, | |
2213 | } | |
2214 | }, | |
3952f17e LN |
2215 | .desc_hdr_template = DESC_HDR_TYPE_IPSEC_ESP | |
2216 | DESC_HDR_SEL0_DEU | | |
2217 | DESC_HDR_MODE0_DEU_CBC | | |
2218 | DESC_HDR_MODE0_DEU_3DES | | |
2219 | DESC_HDR_SEL1_MDEUA | | |
2220 | DESC_HDR_MODE1_MDEU_INIT | | |
2221 | DESC_HDR_MODE1_MDEU_PAD | | |
2222 | DESC_HDR_MODE1_MDEU_MD5_HMAC, | |
4de9d0b5 LN |
2223 | }, |
2224 | /* ABLKCIPHER algorithms. */ | |
d5e4aaef LN |
2225 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2226 | .alg.crypto = { | |
4de9d0b5 LN |
2227 | .cra_name = "cbc(aes)", |
2228 | .cra_driver_name = "cbc-aes-talitos", | |
2229 | .cra_blocksize = AES_BLOCK_SIZE, | |
2230 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2231 | CRYPTO_ALG_ASYNC, | |
2232 | .cra_type = &crypto_ablkcipher_type, | |
2233 | .cra_ablkcipher = { | |
2234 | .setkey = ablkcipher_setkey, | |
2235 | .encrypt = ablkcipher_encrypt, | |
2236 | .decrypt = ablkcipher_decrypt, | |
2237 | .geniv = "eseqiv", | |
2238 | .min_keysize = AES_MIN_KEY_SIZE, | |
2239 | .max_keysize = AES_MAX_KEY_SIZE, | |
2240 | .ivsize = AES_BLOCK_SIZE, | |
2241 | } | |
2242 | }, | |
2243 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2244 | DESC_HDR_SEL0_AESU | | |
2245 | DESC_HDR_MODE0_AESU_CBC, | |
2246 | }, | |
d5e4aaef LN |
2247 | { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, |
2248 | .alg.crypto = { | |
4de9d0b5 LN |
2249 | .cra_name = "cbc(des3_ede)", |
2250 | .cra_driver_name = "cbc-3des-talitos", | |
2251 | .cra_blocksize = DES3_EDE_BLOCK_SIZE, | |
2252 | .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | | |
2253 | CRYPTO_ALG_ASYNC, | |
2254 | .cra_type = &crypto_ablkcipher_type, | |
2255 | .cra_ablkcipher = { | |
2256 | .setkey = ablkcipher_setkey, | |
2257 | .encrypt = ablkcipher_encrypt, | |
2258 | .decrypt = ablkcipher_decrypt, | |
2259 | .geniv = "eseqiv", | |
2260 | .min_keysize = DES3_EDE_KEY_SIZE, | |
2261 | .max_keysize = DES3_EDE_KEY_SIZE, | |
2262 | .ivsize = DES3_EDE_BLOCK_SIZE, | |
2263 | } | |
2264 | }, | |
2265 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2266 | DESC_HDR_SEL0_DEU | | |
2267 | DESC_HDR_MODE0_DEU_CBC | | |
2268 | DESC_HDR_MODE0_DEU_3DES, | |
497f2e6b LN |
2269 | }, |
2270 | /* AHASH algorithms. */ | |
2271 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2272 | .alg.hash = { | |
2273 | .init = ahash_init, | |
2274 | .update = ahash_update, | |
2275 | .final = ahash_final, | |
2276 | .finup = ahash_finup, | |
2277 | .digest = ahash_digest, | |
2278 | .halg.digestsize = MD5_DIGEST_SIZE, | |
2279 | .halg.base = { | |
2280 | .cra_name = "md5", | |
2281 | .cra_driver_name = "md5-talitos", | |
2282 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2283 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2284 | CRYPTO_ALG_ASYNC, | |
2285 | .cra_type = &crypto_ahash_type | |
2286 | } | |
2287 | }, | |
2288 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2289 | DESC_HDR_SEL0_MDEUA | | |
2290 | DESC_HDR_MODE0_MDEU_MD5, | |
2291 | }, | |
2292 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2293 | .alg.hash = { | |
2294 | .init = ahash_init, | |
2295 | .update = ahash_update, | |
2296 | .final = ahash_final, | |
2297 | .finup = ahash_finup, | |
2298 | .digest = ahash_digest, | |
2299 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
2300 | .halg.base = { | |
2301 | .cra_name = "sha1", | |
2302 | .cra_driver_name = "sha1-talitos", | |
2303 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2304 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2305 | CRYPTO_ALG_ASYNC, | |
2306 | .cra_type = &crypto_ahash_type | |
2307 | } | |
2308 | }, | |
2309 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2310 | DESC_HDR_SEL0_MDEUA | | |
2311 | DESC_HDR_MODE0_MDEU_SHA1, | |
2312 | }, | |
60f208d7 KP |
2313 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2314 | .alg.hash = { | |
2315 | .init = ahash_init, | |
2316 | .update = ahash_update, | |
2317 | .final = ahash_final, | |
2318 | .finup = ahash_finup, | |
2319 | .digest = ahash_digest, | |
2320 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
2321 | .halg.base = { | |
2322 | .cra_name = "sha224", | |
2323 | .cra_driver_name = "sha224-talitos", | |
2324 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2325 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2326 | CRYPTO_ALG_ASYNC, | |
2327 | .cra_type = &crypto_ahash_type | |
2328 | } | |
2329 | }, | |
2330 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2331 | DESC_HDR_SEL0_MDEUA | | |
2332 | DESC_HDR_MODE0_MDEU_SHA224, | |
2333 | }, | |
497f2e6b LN |
2334 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2335 | .alg.hash = { | |
2336 | .init = ahash_init, | |
2337 | .update = ahash_update, | |
2338 | .final = ahash_final, | |
2339 | .finup = ahash_finup, | |
2340 | .digest = ahash_digest, | |
2341 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
2342 | .halg.base = { | |
2343 | .cra_name = "sha256", | |
2344 | .cra_driver_name = "sha256-talitos", | |
2345 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2346 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2347 | CRYPTO_ALG_ASYNC, | |
2348 | .cra_type = &crypto_ahash_type | |
2349 | } | |
2350 | }, | |
2351 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2352 | DESC_HDR_SEL0_MDEUA | | |
2353 | DESC_HDR_MODE0_MDEU_SHA256, | |
2354 | }, | |
2355 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2356 | .alg.hash = { | |
2357 | .init = ahash_init, | |
2358 | .update = ahash_update, | |
2359 | .final = ahash_final, | |
2360 | .finup = ahash_finup, | |
2361 | .digest = ahash_digest, | |
2362 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
2363 | .halg.base = { | |
2364 | .cra_name = "sha384", | |
2365 | .cra_driver_name = "sha384-talitos", | |
2366 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2367 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2368 | CRYPTO_ALG_ASYNC, | |
2369 | .cra_type = &crypto_ahash_type | |
2370 | } | |
2371 | }, | |
2372 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2373 | DESC_HDR_SEL0_MDEUB | | |
2374 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2375 | }, | |
2376 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2377 | .alg.hash = { | |
2378 | .init = ahash_init, | |
2379 | .update = ahash_update, | |
2380 | .final = ahash_final, | |
2381 | .finup = ahash_finup, | |
2382 | .digest = ahash_digest, | |
2383 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
2384 | .halg.base = { | |
2385 | .cra_name = "sha512", | |
2386 | .cra_driver_name = "sha512-talitos", | |
2387 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2388 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2389 | CRYPTO_ALG_ASYNC, | |
2390 | .cra_type = &crypto_ahash_type | |
2391 | } | |
2392 | }, | |
2393 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2394 | DESC_HDR_SEL0_MDEUB | | |
2395 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2396 | }, | |
79b3a418 LN |
2397 | { .type = CRYPTO_ALG_TYPE_AHASH, |
2398 | .alg.hash = { | |
2399 | .init = ahash_init, | |
2400 | .update = ahash_update, | |
2401 | .final = ahash_final, | |
2402 | .finup = ahash_finup, | |
2403 | .digest = ahash_digest, | |
2404 | .setkey = ahash_setkey, | |
2405 | .halg.digestsize = MD5_DIGEST_SIZE, | |
2406 | .halg.base = { | |
2407 | .cra_name = "hmac(md5)", | |
2408 | .cra_driver_name = "hmac-md5-talitos", | |
2409 | .cra_blocksize = MD5_BLOCK_SIZE, | |
2410 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2411 | CRYPTO_ALG_ASYNC, | |
2412 | .cra_type = &crypto_ahash_type | |
2413 | } | |
2414 | }, | |
2415 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2416 | DESC_HDR_SEL0_MDEUA | | |
2417 | DESC_HDR_MODE0_MDEU_MD5, | |
2418 | }, | |
2419 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2420 | .alg.hash = { | |
2421 | .init = ahash_init, | |
2422 | .update = ahash_update, | |
2423 | .final = ahash_final, | |
2424 | .finup = ahash_finup, | |
2425 | .digest = ahash_digest, | |
2426 | .setkey = ahash_setkey, | |
2427 | .halg.digestsize = SHA1_DIGEST_SIZE, | |
2428 | .halg.base = { | |
2429 | .cra_name = "hmac(sha1)", | |
2430 | .cra_driver_name = "hmac-sha1-talitos", | |
2431 | .cra_blocksize = SHA1_BLOCK_SIZE, | |
2432 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2433 | CRYPTO_ALG_ASYNC, | |
2434 | .cra_type = &crypto_ahash_type | |
2435 | } | |
2436 | }, | |
2437 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2438 | DESC_HDR_SEL0_MDEUA | | |
2439 | DESC_HDR_MODE0_MDEU_SHA1, | |
2440 | }, | |
2441 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2442 | .alg.hash = { | |
2443 | .init = ahash_init, | |
2444 | .update = ahash_update, | |
2445 | .final = ahash_final, | |
2446 | .finup = ahash_finup, | |
2447 | .digest = ahash_digest, | |
2448 | .setkey = ahash_setkey, | |
2449 | .halg.digestsize = SHA224_DIGEST_SIZE, | |
2450 | .halg.base = { | |
2451 | .cra_name = "hmac(sha224)", | |
2452 | .cra_driver_name = "hmac-sha224-talitos", | |
2453 | .cra_blocksize = SHA224_BLOCK_SIZE, | |
2454 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2455 | CRYPTO_ALG_ASYNC, | |
2456 | .cra_type = &crypto_ahash_type | |
2457 | } | |
2458 | }, | |
2459 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2460 | DESC_HDR_SEL0_MDEUA | | |
2461 | DESC_HDR_MODE0_MDEU_SHA224, | |
2462 | }, | |
2463 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2464 | .alg.hash = { | |
2465 | .init = ahash_init, | |
2466 | .update = ahash_update, | |
2467 | .final = ahash_final, | |
2468 | .finup = ahash_finup, | |
2469 | .digest = ahash_digest, | |
2470 | .setkey = ahash_setkey, | |
2471 | .halg.digestsize = SHA256_DIGEST_SIZE, | |
2472 | .halg.base = { | |
2473 | .cra_name = "hmac(sha256)", | |
2474 | .cra_driver_name = "hmac-sha256-talitos", | |
2475 | .cra_blocksize = SHA256_BLOCK_SIZE, | |
2476 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2477 | CRYPTO_ALG_ASYNC, | |
2478 | .cra_type = &crypto_ahash_type | |
2479 | } | |
2480 | }, | |
2481 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2482 | DESC_HDR_SEL0_MDEUA | | |
2483 | DESC_HDR_MODE0_MDEU_SHA256, | |
2484 | }, | |
2485 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2486 | .alg.hash = { | |
2487 | .init = ahash_init, | |
2488 | .update = ahash_update, | |
2489 | .final = ahash_final, | |
2490 | .finup = ahash_finup, | |
2491 | .digest = ahash_digest, | |
2492 | .setkey = ahash_setkey, | |
2493 | .halg.digestsize = SHA384_DIGEST_SIZE, | |
2494 | .halg.base = { | |
2495 | .cra_name = "hmac(sha384)", | |
2496 | .cra_driver_name = "hmac-sha384-talitos", | |
2497 | .cra_blocksize = SHA384_BLOCK_SIZE, | |
2498 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2499 | CRYPTO_ALG_ASYNC, | |
2500 | .cra_type = &crypto_ahash_type | |
2501 | } | |
2502 | }, | |
2503 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2504 | DESC_HDR_SEL0_MDEUB | | |
2505 | DESC_HDR_MODE0_MDEUB_SHA384, | |
2506 | }, | |
2507 | { .type = CRYPTO_ALG_TYPE_AHASH, | |
2508 | .alg.hash = { | |
2509 | .init = ahash_init, | |
2510 | .update = ahash_update, | |
2511 | .final = ahash_final, | |
2512 | .finup = ahash_finup, | |
2513 | .digest = ahash_digest, | |
2514 | .setkey = ahash_setkey, | |
2515 | .halg.digestsize = SHA512_DIGEST_SIZE, | |
2516 | .halg.base = { | |
2517 | .cra_name = "hmac(sha512)", | |
2518 | .cra_driver_name = "hmac-sha512-talitos", | |
2519 | .cra_blocksize = SHA512_BLOCK_SIZE, | |
2520 | .cra_flags = CRYPTO_ALG_TYPE_AHASH | | |
2521 | CRYPTO_ALG_ASYNC, | |
2522 | .cra_type = &crypto_ahash_type | |
2523 | } | |
2524 | }, | |
2525 | .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2526 | DESC_HDR_SEL0_MDEUB | | |
2527 | DESC_HDR_MODE0_MDEUB_SHA512, | |
2528 | } | |
9c4a7965 KP |
2529 | }; |
2530 | ||
2531 | struct talitos_crypto_alg { | |
2532 | struct list_head entry; | |
2533 | struct device *dev; | |
acbf7c62 | 2534 | struct talitos_alg_template algt; |
9c4a7965 KP |
2535 | }; |
2536 | ||
2537 | static int talitos_cra_init(struct crypto_tfm *tfm) | |
2538 | { | |
2539 | struct crypto_alg *alg = tfm->__crt_alg; | |
19bbbc63 | 2540 | struct talitos_crypto_alg *talitos_alg; |
9c4a7965 | 2541 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); |
5228f0f7 | 2542 | struct talitos_private *priv; |
9c4a7965 | 2543 | |
497f2e6b LN |
2544 | if ((alg->cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_AHASH) |
2545 | talitos_alg = container_of(__crypto_ahash_alg(alg), | |
2546 | struct talitos_crypto_alg, | |
2547 | algt.alg.hash); | |
2548 | else | |
2549 | talitos_alg = container_of(alg, struct talitos_crypto_alg, | |
2550 | algt.alg.crypto); | |
19bbbc63 | 2551 | |
9c4a7965 KP |
2552 | /* update context with ptr to dev */ |
2553 | ctx->dev = talitos_alg->dev; | |
19bbbc63 | 2554 | |
5228f0f7 KP |
2555 | /* assign SEC channel to tfm in round-robin fashion */ |
2556 | priv = dev_get_drvdata(ctx->dev); | |
2557 | ctx->ch = atomic_inc_return(&priv->last_chan) & | |
2558 | (priv->num_channels - 1); | |
2559 | ||
9c4a7965 | 2560 | /* copy descriptor header template value */ |
acbf7c62 | 2561 | ctx->desc_hdr_template = talitos_alg->algt.desc_hdr_template; |
9c4a7965 | 2562 | |
602dba5a KP |
2563 | /* select done notification */ |
2564 | ctx->desc_hdr_template |= DESC_HDR_DONE_NOTIFY; | |
2565 | ||
497f2e6b LN |
2566 | return 0; |
2567 | } | |
2568 | ||
2569 | static int talitos_cra_init_aead(struct crypto_tfm *tfm) | |
2570 | { | |
2571 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2572 | ||
2573 | talitos_cra_init(tfm); | |
9c4a7965 KP |
2574 | |
2575 | /* random first IV */ | |
70bcaca7 | 2576 | get_random_bytes(ctx->iv, TALITOS_MAX_IV_LENGTH); |
9c4a7965 KP |
2577 | |
2578 | return 0; | |
2579 | } | |
2580 | ||
497f2e6b LN |
2581 | static int talitos_cra_init_ahash(struct crypto_tfm *tfm) |
2582 | { | |
2583 | struct talitos_ctx *ctx = crypto_tfm_ctx(tfm); | |
2584 | ||
2585 | talitos_cra_init(tfm); | |
2586 | ||
2587 | ctx->keylen = 0; | |
2588 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), | |
2589 | sizeof(struct talitos_ahash_req_ctx)); | |
2590 | ||
2591 | return 0; | |
2592 | } | |
2593 | ||
9c4a7965 KP |
2594 | /* |
2595 | * given the alg's descriptor header template, determine whether descriptor | |
2596 | * type and primary/secondary execution units required match the hw | |
2597 | * capabilities description provided in the device tree node. | |
2598 | */ | |
2599 | static int hw_supports(struct device *dev, __be32 desc_hdr_template) | |
2600 | { | |
2601 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2602 | int ret; | |
2603 | ||
2604 | ret = (1 << DESC_TYPE(desc_hdr_template) & priv->desc_types) && | |
2605 | (1 << PRIMARY_EU(desc_hdr_template) & priv->exec_units); | |
2606 | ||
2607 | if (SECONDARY_EU(desc_hdr_template)) | |
2608 | ret = ret && (1 << SECONDARY_EU(desc_hdr_template) | |
2609 | & priv->exec_units); | |
2610 | ||
2611 | return ret; | |
2612 | } | |
2613 | ||
2dc11581 | 2614 | static int talitos_remove(struct platform_device *ofdev) |
9c4a7965 KP |
2615 | { |
2616 | struct device *dev = &ofdev->dev; | |
2617 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2618 | struct talitos_crypto_alg *t_alg, *n; | |
2619 | int i; | |
2620 | ||
2621 | list_for_each_entry_safe(t_alg, n, &priv->alg_list, entry) { | |
acbf7c62 LN |
2622 | switch (t_alg->algt.type) { |
2623 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2624 | case CRYPTO_ALG_TYPE_AEAD: | |
2625 | crypto_unregister_alg(&t_alg->algt.alg.crypto); | |
2626 | break; | |
2627 | case CRYPTO_ALG_TYPE_AHASH: | |
2628 | crypto_unregister_ahash(&t_alg->algt.alg.hash); | |
2629 | break; | |
2630 | } | |
9c4a7965 KP |
2631 | list_del(&t_alg->entry); |
2632 | kfree(t_alg); | |
2633 | } | |
2634 | ||
2635 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) | |
2636 | talitos_unregister_rng(dev); | |
2637 | ||
4b992628 | 2638 | for (i = 0; i < priv->num_channels; i++) |
0b798247 | 2639 | kfree(priv->chan[i].fifo); |
9c4a7965 | 2640 | |
4b992628 | 2641 | kfree(priv->chan); |
9c4a7965 | 2642 | |
c3e337f8 | 2643 | for (i = 0; i < 2; i++) |
2cdba3cf | 2644 | if (priv->irq[i]) { |
c3e337f8 KP |
2645 | free_irq(priv->irq[i], dev); |
2646 | irq_dispose_mapping(priv->irq[i]); | |
2647 | } | |
9c4a7965 | 2648 | |
c3e337f8 | 2649 | tasklet_kill(&priv->done_task[0]); |
2cdba3cf | 2650 | if (priv->irq[1]) |
c3e337f8 | 2651 | tasklet_kill(&priv->done_task[1]); |
9c4a7965 KP |
2652 | |
2653 | iounmap(priv->reg); | |
2654 | ||
2655 | dev_set_drvdata(dev, NULL); | |
2656 | ||
2657 | kfree(priv); | |
2658 | ||
2659 | return 0; | |
2660 | } | |
2661 | ||
2662 | static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev, | |
2663 | struct talitos_alg_template | |
2664 | *template) | |
2665 | { | |
60f208d7 | 2666 | struct talitos_private *priv = dev_get_drvdata(dev); |
9c4a7965 KP |
2667 | struct talitos_crypto_alg *t_alg; |
2668 | struct crypto_alg *alg; | |
2669 | ||
2670 | t_alg = kzalloc(sizeof(struct talitos_crypto_alg), GFP_KERNEL); | |
2671 | if (!t_alg) | |
2672 | return ERR_PTR(-ENOMEM); | |
2673 | ||
acbf7c62 LN |
2674 | t_alg->algt = *template; |
2675 | ||
2676 | switch (t_alg->algt.type) { | |
2677 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
497f2e6b LN |
2678 | alg = &t_alg->algt.alg.crypto; |
2679 | alg->cra_init = talitos_cra_init; | |
2680 | break; | |
acbf7c62 LN |
2681 | case CRYPTO_ALG_TYPE_AEAD: |
2682 | alg = &t_alg->algt.alg.crypto; | |
497f2e6b | 2683 | alg->cra_init = talitos_cra_init_aead; |
acbf7c62 LN |
2684 | break; |
2685 | case CRYPTO_ALG_TYPE_AHASH: | |
2686 | alg = &t_alg->algt.alg.hash.halg.base; | |
497f2e6b | 2687 | alg->cra_init = talitos_cra_init_ahash; |
79b3a418 | 2688 | if (!(priv->features & TALITOS_FTR_HMAC_OK) && |
0b2730d8 KP |
2689 | !strncmp(alg->cra_name, "hmac", 4)) { |
2690 | kfree(t_alg); | |
79b3a418 | 2691 | return ERR_PTR(-ENOTSUPP); |
0b2730d8 | 2692 | } |
60f208d7 | 2693 | if (!(priv->features & TALITOS_FTR_SHA224_HWINIT) && |
79b3a418 LN |
2694 | (!strcmp(alg->cra_name, "sha224") || |
2695 | !strcmp(alg->cra_name, "hmac(sha224)"))) { | |
60f208d7 KP |
2696 | t_alg->algt.alg.hash.init = ahash_init_sha224_swinit; |
2697 | t_alg->algt.desc_hdr_template = | |
2698 | DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU | | |
2699 | DESC_HDR_SEL0_MDEUA | | |
2700 | DESC_HDR_MODE0_MDEU_SHA256; | |
2701 | } | |
497f2e6b | 2702 | break; |
1d11911a KP |
2703 | default: |
2704 | dev_err(dev, "unknown algorithm type %d\n", t_alg->algt.type); | |
2705 | return ERR_PTR(-EINVAL); | |
acbf7c62 | 2706 | } |
9c4a7965 | 2707 | |
9c4a7965 | 2708 | alg->cra_module = THIS_MODULE; |
9c4a7965 | 2709 | alg->cra_priority = TALITOS_CRA_PRIORITY; |
9c4a7965 | 2710 | alg->cra_alignmask = 0; |
9c4a7965 | 2711 | alg->cra_ctxsize = sizeof(struct talitos_ctx); |
d912bb76 | 2712 | alg->cra_flags |= CRYPTO_ALG_KERN_DRIVER_ONLY; |
9c4a7965 | 2713 | |
9c4a7965 KP |
2714 | t_alg->dev = dev; |
2715 | ||
2716 | return t_alg; | |
2717 | } | |
2718 | ||
c3e337f8 KP |
2719 | static int talitos_probe_irq(struct platform_device *ofdev) |
2720 | { | |
2721 | struct device *dev = &ofdev->dev; | |
2722 | struct device_node *np = ofdev->dev.of_node; | |
2723 | struct talitos_private *priv = dev_get_drvdata(dev); | |
2724 | int err; | |
2725 | ||
2726 | priv->irq[0] = irq_of_parse_and_map(np, 0); | |
2cdba3cf | 2727 | if (!priv->irq[0]) { |
c3e337f8 KP |
2728 | dev_err(dev, "failed to map irq\n"); |
2729 | return -EINVAL; | |
2730 | } | |
2731 | ||
2732 | priv->irq[1] = irq_of_parse_and_map(np, 1); | |
2733 | ||
2734 | /* get the primary irq line */ | |
2cdba3cf | 2735 | if (!priv->irq[1]) { |
c3e337f8 KP |
2736 | err = request_irq(priv->irq[0], talitos_interrupt_4ch, 0, |
2737 | dev_driver_string(dev), dev); | |
2738 | goto primary_out; | |
2739 | } | |
2740 | ||
2741 | err = request_irq(priv->irq[0], talitos_interrupt_ch0_2, 0, | |
2742 | dev_driver_string(dev), dev); | |
2743 | if (err) | |
2744 | goto primary_out; | |
2745 | ||
2746 | /* get the secondary irq line */ | |
2747 | err = request_irq(priv->irq[1], talitos_interrupt_ch1_3, 0, | |
2748 | dev_driver_string(dev), dev); | |
2749 | if (err) { | |
2750 | dev_err(dev, "failed to request secondary irq\n"); | |
2751 | irq_dispose_mapping(priv->irq[1]); | |
2cdba3cf | 2752 | priv->irq[1] = 0; |
c3e337f8 KP |
2753 | } |
2754 | ||
2755 | return err; | |
2756 | ||
2757 | primary_out: | |
2758 | if (err) { | |
2759 | dev_err(dev, "failed to request primary irq\n"); | |
2760 | irq_dispose_mapping(priv->irq[0]); | |
2cdba3cf | 2761 | priv->irq[0] = 0; |
c3e337f8 KP |
2762 | } |
2763 | ||
2764 | return err; | |
2765 | } | |
2766 | ||
1c48a5c9 | 2767 | static int talitos_probe(struct platform_device *ofdev) |
9c4a7965 KP |
2768 | { |
2769 | struct device *dev = &ofdev->dev; | |
61c7a080 | 2770 | struct device_node *np = ofdev->dev.of_node; |
9c4a7965 KP |
2771 | struct talitos_private *priv; |
2772 | const unsigned int *prop; | |
2773 | int i, err; | |
2774 | ||
2775 | priv = kzalloc(sizeof(struct talitos_private), GFP_KERNEL); | |
2776 | if (!priv) | |
2777 | return -ENOMEM; | |
2778 | ||
2779 | dev_set_drvdata(dev, priv); | |
2780 | ||
2781 | priv->ofdev = ofdev; | |
2782 | ||
511d63cb HG |
2783 | spin_lock_init(&priv->reg_lock); |
2784 | ||
c3e337f8 KP |
2785 | err = talitos_probe_irq(ofdev); |
2786 | if (err) | |
9c4a7965 | 2787 | goto err_out; |
9c4a7965 | 2788 | |
2cdba3cf | 2789 | if (!priv->irq[1]) { |
c3e337f8 KP |
2790 | tasklet_init(&priv->done_task[0], talitos_done_4ch, |
2791 | (unsigned long)dev); | |
2792 | } else { | |
2793 | tasklet_init(&priv->done_task[0], talitos_done_ch0_2, | |
2794 | (unsigned long)dev); | |
2795 | tasklet_init(&priv->done_task[1], talitos_done_ch1_3, | |
2796 | (unsigned long)dev); | |
9c4a7965 KP |
2797 | } |
2798 | ||
c3e337f8 KP |
2799 | INIT_LIST_HEAD(&priv->alg_list); |
2800 | ||
9c4a7965 KP |
2801 | priv->reg = of_iomap(np, 0); |
2802 | if (!priv->reg) { | |
2803 | dev_err(dev, "failed to of_iomap\n"); | |
2804 | err = -ENOMEM; | |
2805 | goto err_out; | |
2806 | } | |
2807 | ||
2808 | /* get SEC version capabilities from device tree */ | |
2809 | prop = of_get_property(np, "fsl,num-channels", NULL); | |
2810 | if (prop) | |
2811 | priv->num_channels = *prop; | |
2812 | ||
2813 | prop = of_get_property(np, "fsl,channel-fifo-len", NULL); | |
2814 | if (prop) | |
2815 | priv->chfifo_len = *prop; | |
2816 | ||
2817 | prop = of_get_property(np, "fsl,exec-units-mask", NULL); | |
2818 | if (prop) | |
2819 | priv->exec_units = *prop; | |
2820 | ||
2821 | prop = of_get_property(np, "fsl,descriptor-types-mask", NULL); | |
2822 | if (prop) | |
2823 | priv->desc_types = *prop; | |
2824 | ||
2825 | if (!is_power_of_2(priv->num_channels) || !priv->chfifo_len || | |
2826 | !priv->exec_units || !priv->desc_types) { | |
2827 | dev_err(dev, "invalid property data in device tree node\n"); | |
2828 | err = -EINVAL; | |
2829 | goto err_out; | |
2830 | } | |
2831 | ||
f3c85bc1 LN |
2832 | if (of_device_is_compatible(np, "fsl,sec3.0")) |
2833 | priv->features |= TALITOS_FTR_SRC_LINK_TBL_LEN_INCLUDES_EXTENT; | |
2834 | ||
fe5720e2 | 2835 | if (of_device_is_compatible(np, "fsl,sec2.1")) |
60f208d7 | 2836 | priv->features |= TALITOS_FTR_HW_AUTH_CHECK | |
79b3a418 LN |
2837 | TALITOS_FTR_SHA224_HWINIT | |
2838 | TALITOS_FTR_HMAC_OK; | |
fe5720e2 | 2839 | |
4b992628 KP |
2840 | priv->chan = kzalloc(sizeof(struct talitos_channel) * |
2841 | priv->num_channels, GFP_KERNEL); | |
2842 | if (!priv->chan) { | |
2843 | dev_err(dev, "failed to allocate channel management space\n"); | |
9c4a7965 KP |
2844 | err = -ENOMEM; |
2845 | goto err_out; | |
2846 | } | |
2847 | ||
c3e337f8 KP |
2848 | for (i = 0; i < priv->num_channels; i++) { |
2849 | priv->chan[i].reg = priv->reg + TALITOS_CH_STRIDE * (i + 1); | |
2cdba3cf | 2850 | if (!priv->irq[1] || !(i & 1)) |
c3e337f8 KP |
2851 | priv->chan[i].reg += TALITOS_CH_BASE_OFFSET; |
2852 | } | |
ad42d5fc | 2853 | |
9c4a7965 | 2854 | for (i = 0; i < priv->num_channels; i++) { |
4b992628 KP |
2855 | spin_lock_init(&priv->chan[i].head_lock); |
2856 | spin_lock_init(&priv->chan[i].tail_lock); | |
9c4a7965 KP |
2857 | } |
2858 | ||
2859 | priv->fifo_len = roundup_pow_of_two(priv->chfifo_len); | |
2860 | ||
2861 | for (i = 0; i < priv->num_channels; i++) { | |
4b992628 KP |
2862 | priv->chan[i].fifo = kzalloc(sizeof(struct talitos_request) * |
2863 | priv->fifo_len, GFP_KERNEL); | |
2864 | if (!priv->chan[i].fifo) { | |
9c4a7965 KP |
2865 | dev_err(dev, "failed to allocate request fifo %d\n", i); |
2866 | err = -ENOMEM; | |
2867 | goto err_out; | |
2868 | } | |
2869 | } | |
2870 | ||
ec6644d6 | 2871 | for (i = 0; i < priv->num_channels; i++) |
4b992628 KP |
2872 | atomic_set(&priv->chan[i].submit_count, |
2873 | -(priv->chfifo_len - 1)); | |
9c4a7965 | 2874 | |
81eb024c KP |
2875 | dma_set_mask(dev, DMA_BIT_MASK(36)); |
2876 | ||
9c4a7965 KP |
2877 | /* reset and initialize the h/w */ |
2878 | err = init_device(dev); | |
2879 | if (err) { | |
2880 | dev_err(dev, "failed to initialize device\n"); | |
2881 | goto err_out; | |
2882 | } | |
2883 | ||
2884 | /* register the RNG, if available */ | |
2885 | if (hw_supports(dev, DESC_HDR_SEL0_RNG)) { | |
2886 | err = talitos_register_rng(dev); | |
2887 | if (err) { | |
2888 | dev_err(dev, "failed to register hwrng: %d\n", err); | |
2889 | goto err_out; | |
2890 | } else | |
2891 | dev_info(dev, "hwrng\n"); | |
2892 | } | |
2893 | ||
2894 | /* register crypto algorithms the device supports */ | |
9c4a7965 KP |
2895 | for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { |
2896 | if (hw_supports(dev, driver_algs[i].desc_hdr_template)) { | |
2897 | struct talitos_crypto_alg *t_alg; | |
acbf7c62 | 2898 | char *name = NULL; |
9c4a7965 KP |
2899 | |
2900 | t_alg = talitos_alg_alloc(dev, &driver_algs[i]); | |
2901 | if (IS_ERR(t_alg)) { | |
2902 | err = PTR_ERR(t_alg); | |
0b2730d8 | 2903 | if (err == -ENOTSUPP) |
79b3a418 | 2904 | continue; |
9c4a7965 KP |
2905 | goto err_out; |
2906 | } | |
2907 | ||
acbf7c62 LN |
2908 | switch (t_alg->algt.type) { |
2909 | case CRYPTO_ALG_TYPE_ABLKCIPHER: | |
2910 | case CRYPTO_ALG_TYPE_AEAD: | |
2911 | err = crypto_register_alg( | |
2912 | &t_alg->algt.alg.crypto); | |
2913 | name = t_alg->algt.alg.crypto.cra_driver_name; | |
2914 | break; | |
2915 | case CRYPTO_ALG_TYPE_AHASH: | |
2916 | err = crypto_register_ahash( | |
2917 | &t_alg->algt.alg.hash); | |
2918 | name = | |
2919 | t_alg->algt.alg.hash.halg.base.cra_driver_name; | |
2920 | break; | |
2921 | } | |
9c4a7965 KP |
2922 | if (err) { |
2923 | dev_err(dev, "%s alg registration failed\n", | |
acbf7c62 | 2924 | name); |
9c4a7965 | 2925 | kfree(t_alg); |
5b859b6e | 2926 | } else |
9c4a7965 | 2927 | list_add_tail(&t_alg->entry, &priv->alg_list); |
9c4a7965 KP |
2928 | } |
2929 | } | |
5b859b6e KP |
2930 | if (!list_empty(&priv->alg_list)) |
2931 | dev_info(dev, "%s algorithms registered in /proc/crypto\n", | |
2932 | (char *)of_get_property(np, "compatible", NULL)); | |
9c4a7965 KP |
2933 | |
2934 | return 0; | |
2935 | ||
2936 | err_out: | |
2937 | talitos_remove(ofdev); | |
9c4a7965 KP |
2938 | |
2939 | return err; | |
2940 | } | |
2941 | ||
6c3f975a | 2942 | static const struct of_device_id talitos_match[] = { |
9c4a7965 KP |
2943 | { |
2944 | .compatible = "fsl,sec2.0", | |
2945 | }, | |
2946 | {}, | |
2947 | }; | |
2948 | MODULE_DEVICE_TABLE(of, talitos_match); | |
2949 | ||
1c48a5c9 | 2950 | static struct platform_driver talitos_driver = { |
4018294b GL |
2951 | .driver = { |
2952 | .name = "talitos", | |
2953 | .owner = THIS_MODULE, | |
2954 | .of_match_table = talitos_match, | |
2955 | }, | |
9c4a7965 | 2956 | .probe = talitos_probe, |
596f1034 | 2957 | .remove = talitos_remove, |
9c4a7965 KP |
2958 | }; |
2959 | ||
741e8c2d | 2960 | module_platform_driver(talitos_driver); |
9c4a7965 KP |
2961 | |
2962 | MODULE_LICENSE("GPL"); | |
2963 | MODULE_AUTHOR("Kim Phillips <kim.phillips@freescale.com>"); | |
2964 | MODULE_DESCRIPTION("Freescale integrated security engine (SEC) driver"); |