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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright 2016 Broadcom4 */5 6#include <linux/err.h>7#include <linux/module.h>8#include <linux/init.h>9#include <linux/errno.h>10#include <linux/kernel.h>11#include <linux/interrupt.h>12#include <linux/platform_device.h>13#include <linux/scatterlist.h>14#include <linux/crypto.h>15#include <linux/kthread.h>16#include <linux/rtnetlink.h>17#include <linux/sched.h>18#include <linux/of.h>19#include <linux/io.h>20#include <linux/bitops.h>21 22#include <crypto/algapi.h>23#include <crypto/aead.h>24#include <crypto/internal/aead.h>25#include <crypto/aes.h>26#include <crypto/internal/des.h>27#include <crypto/hmac.h>28#include <crypto/md5.h>29#include <crypto/authenc.h>30#include <crypto/skcipher.h>31#include <crypto/hash.h>32#include <crypto/sha1.h>33#include <crypto/sha2.h>34#include <crypto/sha3.h>35 36#include "util.h"37#include "cipher.h"38#include "spu.h"39#include "spum.h"40#include "spu2.h"41 42/* ================= Device Structure ================== */43 44struct bcm_device_private iproc_priv;45 46/* ==================== Parameters ===================== */47 48int flow_debug_logging;49module_param(flow_debug_logging, int, 0644);50MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging");51 52int packet_debug_logging;53module_param(packet_debug_logging, int, 0644);54MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging");55 56int debug_logging_sleep;57module_param(debug_logging_sleep, int, 0644);58MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep");59 60/*61 * The value of these module parameters is used to set the priority for each62 * algo type when this driver registers algos with the kernel crypto API.63 * To use a priority other than the default, set the priority in the insmod or64 * modprobe. Changing the module priority after init time has no effect.65 *66 * The default priorities are chosen to be lower (less preferred) than ARMv8 CE67 * algos, but more preferred than generic software algos.68 */69static int cipher_pri = 150;70module_param(cipher_pri, int, 0644);71MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos");72 73static int hash_pri = 100;74module_param(hash_pri, int, 0644);75MODULE_PARM_DESC(hash_pri, "Priority for hash algos");76 77static int aead_pri = 150;78module_param(aead_pri, int, 0644);79MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos");80 81/* A type 3 BCM header, expected to precede the SPU header for SPU-M.82 * Bits 3 and 4 in the first byte encode the channel number (the dma ringset).83 * 0x60 - ring 084 * 0x68 - ring 185 * 0x70 - ring 286 * 0x78 - ring 387 */88static char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 };89/*90 * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN91 * is set dynamically after reading SPU type from device tree.92 */93#define BCM_HDR_LEN iproc_priv.bcm_hdr_len94 95/* min and max time to sleep before retrying when mbox queue is full. usec */96#define MBOX_SLEEP_MIN 80097#define MBOX_SLEEP_MAX 100098 99/**100 * select_channel() - Select a SPU channel to handle a crypto request. Selects101 * channel in round robin order.102 *103 * Return: channel index104 */105static u8 select_channel(void)106{107 u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan);108 109 return chan_idx % iproc_priv.spu.num_chan;110}111 112/**113 * spu_skcipher_rx_sg_create() - Build up the scatterlist of buffers used to114 * receive a SPU response message for an skcipher request. Includes buffers to115 * catch SPU message headers and the response data.116 * @mssg: mailbox message containing the receive sg117 * @rctx: crypto request context118 * @rx_frag_num: number of scatterlist elements required to hold the119 * SPU response message120 * @chunksize: Number of bytes of response data expected121 * @stat_pad_len: Number of bytes required to pad the STAT field to122 * a 4-byte boundary123 *124 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()125 * when the request completes, whether the request is handled successfully or126 * there is an error.127 *128 * Returns:129 * 0 if successful130 * < 0 if an error131 */132static int133spu_skcipher_rx_sg_create(struct brcm_message *mssg,134 struct iproc_reqctx_s *rctx,135 u8 rx_frag_num,136 unsigned int chunksize, u32 stat_pad_len)137{138 struct spu_hw *spu = &iproc_priv.spu;139 struct scatterlist *sg; /* used to build sgs in mbox message */140 struct iproc_ctx_s *ctx = rctx->ctx;141 u32 datalen; /* Number of bytes of response data expected */142 143 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),144 rctx->gfp);145 if (!mssg->spu.dst)146 return -ENOMEM;147 148 sg = mssg->spu.dst;149 sg_init_table(sg, rx_frag_num);150 /* Space for SPU message header */151 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);152 153 /* If XTS tweak in payload, add buffer to receive encrypted tweak */154 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&155 spu->spu_xts_tweak_in_payload())156 sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak,157 SPU_XTS_TWEAK_SIZE);158 159 /* Copy in each dst sg entry from request, up to chunksize */160 datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,161 rctx->dst_nents, chunksize);162 if (datalen < chunksize) {163 pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u",164 __func__, chunksize, datalen);165 return -EFAULT;166 }167 168 if (stat_pad_len)169 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);170 171 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);172 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());173 174 return 0;175}176 177/**178 * spu_skcipher_tx_sg_create() - Build up the scatterlist of buffers used to179 * send a SPU request message for an skcipher request. Includes SPU message180 * headers and the request data.181 * @mssg: mailbox message containing the transmit sg182 * @rctx: crypto request context183 * @tx_frag_num: number of scatterlist elements required to construct the184 * SPU request message185 * @chunksize: Number of bytes of request data186 * @pad_len: Number of pad bytes187 *188 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()189 * when the request completes, whether the request is handled successfully or190 * there is an error.191 *192 * Returns:193 * 0 if successful194 * < 0 if an error195 */196static int197spu_skcipher_tx_sg_create(struct brcm_message *mssg,198 struct iproc_reqctx_s *rctx,199 u8 tx_frag_num, unsigned int chunksize, u32 pad_len)200{201 struct spu_hw *spu = &iproc_priv.spu;202 struct scatterlist *sg; /* used to build sgs in mbox message */203 struct iproc_ctx_s *ctx = rctx->ctx;204 u32 datalen; /* Number of bytes of response data expected */205 u32 stat_len;206 207 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),208 rctx->gfp);209 if (unlikely(!mssg->spu.src))210 return -ENOMEM;211 212 sg = mssg->spu.src;213 sg_init_table(sg, tx_frag_num);214 215 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,216 BCM_HDR_LEN + ctx->spu_req_hdr_len);217 218 /* if XTS tweak in payload, copy from IV (where crypto API puts it) */219 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&220 spu->spu_xts_tweak_in_payload())221 sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE);222 223 /* Copy in each src sg entry from request, up to chunksize */224 datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,225 rctx->src_nents, chunksize);226 if (unlikely(datalen < chunksize)) {227 pr_err("%s(): failed to copy src sg to mbox msg",228 __func__);229 return -EFAULT;230 }231 232 if (pad_len)233 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);234 235 stat_len = spu->spu_tx_status_len();236 if (stat_len) {237 memset(rctx->msg_buf.tx_stat, 0, stat_len);238 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);239 }240 return 0;241}242 243static int mailbox_send_message(struct brcm_message *mssg, u32 flags,244 u8 chan_idx)245{246 int err;247 int retry_cnt = 0;248 struct device *dev = &(iproc_priv.pdev->dev);249 250 err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg);251 if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) {252 while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {253 /*254 * Mailbox queue is full. Since MAY_SLEEP is set, assume255 * not in atomic context and we can wait and try again.256 */257 retry_cnt++;258 usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);259 err = mbox_send_message(iproc_priv.mbox[chan_idx],260 mssg);261 atomic_inc(&iproc_priv.mb_no_spc);262 }263 }264 if (err < 0) {265 atomic_inc(&iproc_priv.mb_send_fail);266 return err;267 }268 269 /* Check error returned by mailbox controller */270 err = mssg->error;271 if (unlikely(err < 0)) {272 dev_err(dev, "message error %d", err);273 /* Signal txdone for mailbox channel */274 }275 276 /* Signal txdone for mailbox channel */277 mbox_client_txdone(iproc_priv.mbox[chan_idx], err);278 return err;279}280 281/**282 * handle_skcipher_req() - Submit as much of a block cipher request as fits in283 * a single SPU request message, starting at the current position in the request284 * data.285 * @rctx: Crypto request context286 *287 * This may be called on the crypto API thread, or, when a request is so large288 * it must be broken into multiple SPU messages, on the thread used to invoke289 * the response callback. When requests are broken into multiple SPU290 * messages, we assume subsequent messages depend on previous results, and291 * thus always wait for previous results before submitting the next message.292 * Because requests are submitted in lock step like this, there is no need293 * to synchronize access to request data structures.294 *295 * Return: -EINPROGRESS: request has been accepted and result will be returned296 * asynchronously297 * Any other value indicates an error298 */299static int handle_skcipher_req(struct iproc_reqctx_s *rctx)300{301 struct spu_hw *spu = &iproc_priv.spu;302 struct crypto_async_request *areq = rctx->parent;303 struct skcipher_request *req =304 container_of(areq, struct skcipher_request, base);305 struct iproc_ctx_s *ctx = rctx->ctx;306 struct spu_cipher_parms cipher_parms;307 int err;308 unsigned int chunksize; /* Num bytes of request to submit */309 int remaining; /* Bytes of request still to process */310 int chunk_start; /* Beginning of data for current SPU msg */311 312 /* IV or ctr value to use in this SPU msg */313 u8 local_iv_ctr[MAX_IV_SIZE];314 u32 stat_pad_len; /* num bytes to align status field */315 u32 pad_len; /* total length of all padding */316 struct brcm_message *mssg; /* mailbox message */317 318 /* number of entries in src and dst sg in mailbox message. */319 u8 rx_frag_num = 2; /* response header and STATUS */320 u8 tx_frag_num = 1; /* request header */321 322 flow_log("%s\n", __func__);323 324 cipher_parms.alg = ctx->cipher.alg;325 cipher_parms.mode = ctx->cipher.mode;326 cipher_parms.type = ctx->cipher_type;327 cipher_parms.key_len = ctx->enckeylen;328 cipher_parms.key_buf = ctx->enckey;329 cipher_parms.iv_buf = local_iv_ctr;330 cipher_parms.iv_len = rctx->iv_ctr_len;331 332 mssg = &rctx->mb_mssg;333 chunk_start = rctx->src_sent;334 remaining = rctx->total_todo - chunk_start;335 336 /* determine the chunk we are breaking off and update the indexes */337 if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&338 (remaining > ctx->max_payload))339 chunksize = ctx->max_payload;340 else341 chunksize = remaining;342 343 rctx->src_sent += chunksize;344 rctx->total_sent = rctx->src_sent;345 346 /* Count number of sg entries to be included in this request */347 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);348 rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);349 350 if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&351 rctx->is_encrypt && chunk_start)352 /*353 * Encrypting non-first first chunk. Copy last block of354 * previous result to IV for this chunk.355 */356 sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr,357 rctx->iv_ctr_len,358 chunk_start - rctx->iv_ctr_len);359 360 if (rctx->iv_ctr_len) {361 /* get our local copy of the iv */362 __builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr,363 rctx->iv_ctr_len);364 365 /* generate the next IV if possible */366 if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&367 !rctx->is_encrypt) {368 /*369 * CBC Decrypt: next IV is the last ciphertext block in370 * this chunk371 */372 sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr,373 rctx->iv_ctr_len,374 rctx->src_sent - rctx->iv_ctr_len);375 } else if (ctx->cipher.mode == CIPHER_MODE_CTR) {376 /*377 * The SPU hardware increments the counter once for378 * each AES block of 16 bytes. So update the counter379 * for the next chunk, if there is one. Note that for380 * this chunk, the counter has already been copied to381 * local_iv_ctr. We can assume a block size of 16,382 * because we only support CTR mode for AES, not for383 * any other cipher alg.384 */385 add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4);386 }387 }388 389 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)390 flow_log("max_payload infinite\n");391 else392 flow_log("max_payload %u\n", ctx->max_payload);393 394 flow_log("sent:%u start:%u remains:%u size:%u\n",395 rctx->src_sent, chunk_start, remaining, chunksize);396 397 /* Copy SPU header template created at setkey time */398 memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr,399 sizeof(rctx->msg_buf.bcm_spu_req_hdr));400 401 spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,402 ctx->spu_req_hdr_len, !(rctx->is_encrypt),403 &cipher_parms, chunksize);404 405 atomic64_add(chunksize, &iproc_priv.bytes_out);406 407 stat_pad_len = spu->spu_wordalign_padlen(chunksize);408 if (stat_pad_len)409 rx_frag_num++;410 pad_len = stat_pad_len;411 if (pad_len) {412 tx_frag_num++;413 spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0,414 0, ctx->auth.alg, ctx->auth.mode,415 rctx->total_sent, stat_pad_len);416 }417 418 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,419 ctx->spu_req_hdr_len);420 packet_log("payload:\n");421 dump_sg(rctx->src_sg, rctx->src_skip, chunksize);422 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);423 424 /*425 * Build mailbox message containing SPU request msg and rx buffers426 * to catch response message427 */428 memset(mssg, 0, sizeof(*mssg));429 mssg->type = BRCM_MESSAGE_SPU;430 mssg->ctx = rctx; /* Will be returned in response */431 432 /* Create rx scatterlist to catch result */433 rx_frag_num += rctx->dst_nents;434 435 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&436 spu->spu_xts_tweak_in_payload())437 rx_frag_num++; /* extra sg to insert tweak */438 439 err = spu_skcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize,440 stat_pad_len);441 if (err)442 return err;443 444 /* Create tx scatterlist containing SPU request message */445 tx_frag_num += rctx->src_nents;446 if (spu->spu_tx_status_len())447 tx_frag_num++;448 449 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&450 spu->spu_xts_tweak_in_payload())451 tx_frag_num++; /* extra sg to insert tweak */452 453 err = spu_skcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize,454 pad_len);455 if (err)456 return err;457 458 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);459 if (unlikely(err < 0))460 return err;461 462 return -EINPROGRESS;463}464 465/**466 * handle_skcipher_resp() - Process a block cipher SPU response. Updates the467 * total received count for the request and updates global stats.468 * @rctx: Crypto request context469 */470static void handle_skcipher_resp(struct iproc_reqctx_s *rctx)471{472 struct spu_hw *spu = &iproc_priv.spu;473 struct crypto_async_request *areq = rctx->parent;474 struct skcipher_request *req = skcipher_request_cast(areq);475 struct iproc_ctx_s *ctx = rctx->ctx;476 u32 payload_len;477 478 /* See how much data was returned */479 payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);480 481 /*482 * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the483 * encrypted tweak ("i") value; we don't count those.484 */485 if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&486 spu->spu_xts_tweak_in_payload() &&487 (payload_len >= SPU_XTS_TWEAK_SIZE))488 payload_len -= SPU_XTS_TWEAK_SIZE;489 490 atomic64_add(payload_len, &iproc_priv.bytes_in);491 492 flow_log("%s() offset: %u, bd_len: %u BD:\n",493 __func__, rctx->total_received, payload_len);494 495 dump_sg(req->dst, rctx->total_received, payload_len);496 497 rctx->total_received += payload_len;498 if (rctx->total_received == rctx->total_todo) {499 atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]);500 atomic_inc(501 &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]);502 }503}504 505/**506 * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to507 * receive a SPU response message for an ahash request.508 * @mssg: mailbox message containing the receive sg509 * @rctx: crypto request context510 * @rx_frag_num: number of scatterlist elements required to hold the511 * SPU response message512 * @digestsize: length of hash digest, in bytes513 * @stat_pad_len: Number of bytes required to pad the STAT field to514 * a 4-byte boundary515 *516 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()517 * when the request completes, whether the request is handled successfully or518 * there is an error.519 *520 * Return:521 * 0 if successful522 * < 0 if an error523 */524static int525spu_ahash_rx_sg_create(struct brcm_message *mssg,526 struct iproc_reqctx_s *rctx,527 u8 rx_frag_num, unsigned int digestsize,528 u32 stat_pad_len)529{530 struct spu_hw *spu = &iproc_priv.spu;531 struct scatterlist *sg; /* used to build sgs in mbox message */532 struct iproc_ctx_s *ctx = rctx->ctx;533 534 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),535 rctx->gfp);536 if (!mssg->spu.dst)537 return -ENOMEM;538 539 sg = mssg->spu.dst;540 sg_init_table(sg, rx_frag_num);541 /* Space for SPU message header */542 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);543 544 /* Space for digest */545 sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);546 547 if (stat_pad_len)548 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);549 550 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);551 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());552 return 0;553}554 555/**556 * spu_ahash_tx_sg_create() - Build up the scatterlist of buffers used to send557 * a SPU request message for an ahash request. Includes SPU message headers and558 * the request data.559 * @mssg: mailbox message containing the transmit sg560 * @rctx: crypto request context561 * @tx_frag_num: number of scatterlist elements required to construct the562 * SPU request message563 * @spu_hdr_len: length in bytes of SPU message header564 * @hash_carry_len: Number of bytes of data carried over from previous req565 * @new_data_len: Number of bytes of new request data566 * @pad_len: Number of pad bytes567 *568 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()569 * when the request completes, whether the request is handled successfully or570 * there is an error.571 *572 * Return:573 * 0 if successful574 * < 0 if an error575 */576static int577spu_ahash_tx_sg_create(struct brcm_message *mssg,578 struct iproc_reqctx_s *rctx,579 u8 tx_frag_num,580 u32 spu_hdr_len,581 unsigned int hash_carry_len,582 unsigned int new_data_len, u32 pad_len)583{584 struct spu_hw *spu = &iproc_priv.spu;585 struct scatterlist *sg; /* used to build sgs in mbox message */586 u32 datalen; /* Number of bytes of response data expected */587 u32 stat_len;588 589 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),590 rctx->gfp);591 if (!mssg->spu.src)592 return -ENOMEM;593 594 sg = mssg->spu.src;595 sg_init_table(sg, tx_frag_num);596 597 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,598 BCM_HDR_LEN + spu_hdr_len);599 600 if (hash_carry_len)601 sg_set_buf(sg++, rctx->hash_carry, hash_carry_len);602 603 if (new_data_len) {604 /* Copy in each src sg entry from request, up to chunksize */605 datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,606 rctx->src_nents, new_data_len);607 if (datalen < new_data_len) {608 pr_err("%s(): failed to copy src sg to mbox msg",609 __func__);610 return -EFAULT;611 }612 }613 614 if (pad_len)615 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);616 617 stat_len = spu->spu_tx_status_len();618 if (stat_len) {619 memset(rctx->msg_buf.tx_stat, 0, stat_len);620 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);621 }622 623 return 0;624}625 626/**627 * handle_ahash_req() - Process an asynchronous hash request from the crypto628 * API.629 * @rctx: Crypto request context630 *631 * Builds a SPU request message embedded in a mailbox message and submits the632 * mailbox message on a selected mailbox channel. The SPU request message is633 * constructed as a scatterlist, including entries from the crypto API's634 * src scatterlist to avoid copying the data to be hashed. This function is635 * called either on the thread from the crypto API, or, in the case that the636 * crypto API request is too large to fit in a single SPU request message,637 * on the thread that invokes the receive callback with a response message.638 * Because some operations require the response from one chunk before the next639 * chunk can be submitted, we always wait for the response for the previous640 * chunk before submitting the next chunk. Because requests are submitted in641 * lock step like this, there is no need to synchronize access to request data642 * structures.643 *644 * Return:645 * -EINPROGRESS: request has been submitted to SPU and response will be646 * returned asynchronously647 * -EAGAIN: non-final request included a small amount of data, which for648 * efficiency we did not submit to the SPU, but instead stored649 * to be submitted to the SPU with the next part of the request650 * other: an error code651 */652static int handle_ahash_req(struct iproc_reqctx_s *rctx)653{654 struct spu_hw *spu = &iproc_priv.spu;655 struct crypto_async_request *areq = rctx->parent;656 struct ahash_request *req = ahash_request_cast(areq);657 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);658 struct crypto_tfm *tfm = crypto_ahash_tfm(ahash);659 unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);660 struct iproc_ctx_s *ctx = rctx->ctx;661 662 /* number of bytes still to be hashed in this req */663 unsigned int nbytes_to_hash = 0;664 int err;665 unsigned int chunksize = 0; /* length of hash carry + new data */666 /*667 * length of new data, not from hash carry, to be submitted in668 * this hw request669 */670 unsigned int new_data_len;671 672 unsigned int __maybe_unused chunk_start = 0;673 u32 db_size; /* Length of data field, incl gcm and hash padding */674 int pad_len = 0; /* total pad len, including gcm, hash, stat padding */675 u32 data_pad_len = 0; /* length of GCM/CCM padding */676 u32 stat_pad_len = 0; /* length of padding to align STATUS word */677 struct brcm_message *mssg; /* mailbox message */678 struct spu_request_opts req_opts;679 struct spu_cipher_parms cipher_parms;680 struct spu_hash_parms hash_parms;681 struct spu_aead_parms aead_parms;682 unsigned int local_nbuf;683 u32 spu_hdr_len;684 unsigned int digestsize;685 u16 rem = 0;686 687 /*688 * number of entries in src and dst sg. Always includes SPU msg header.689 * rx always includes a buffer to catch digest and STATUS.690 */691 u8 rx_frag_num = 3;692 u8 tx_frag_num = 1;693 694 flow_log("total_todo %u, total_sent %u\n",695 rctx->total_todo, rctx->total_sent);696 697 memset(&req_opts, 0, sizeof(req_opts));698 memset(&cipher_parms, 0, sizeof(cipher_parms));699 memset(&hash_parms, 0, sizeof(hash_parms));700 memset(&aead_parms, 0, sizeof(aead_parms));701 702 req_opts.bd_suppress = true;703 hash_parms.alg = ctx->auth.alg;704 hash_parms.mode = ctx->auth.mode;705 hash_parms.type = HASH_TYPE_NONE;706 hash_parms.key_buf = (u8 *)ctx->authkey;707 hash_parms.key_len = ctx->authkeylen;708 709 /*710 * For hash algorithms below assignment looks bit odd but711 * it's needed for AES-XCBC and AES-CMAC hash algorithms712 * to differentiate between 128, 192, 256 bit key values.713 * Based on the key values, hash algorithm is selected.714 * For example for 128 bit key, hash algorithm is AES-128.715 */716 cipher_parms.type = ctx->cipher_type;717 718 mssg = &rctx->mb_mssg;719 chunk_start = rctx->src_sent;720 721 /*722 * Compute the amount remaining to hash. This may include data723 * carried over from previous requests.724 */725 nbytes_to_hash = rctx->total_todo - rctx->total_sent;726 chunksize = nbytes_to_hash;727 if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&728 (chunksize > ctx->max_payload))729 chunksize = ctx->max_payload;730 731 /*732 * If this is not a final request and the request data is not a multiple733 * of a full block, then simply park the extra data and prefix it to the734 * data for the next request.735 */736 if (!rctx->is_final) {737 u8 *dest = rctx->hash_carry + rctx->hash_carry_len;738 u16 new_len; /* len of data to add to hash carry */739 740 rem = chunksize % blocksize; /* remainder */741 if (rem) {742 /* chunksize not a multiple of blocksize */743 chunksize -= rem;744 if (chunksize == 0) {745 /* Don't have a full block to submit to hw */746 new_len = rem - rctx->hash_carry_len;747 sg_copy_part_to_buf(req->src, dest, new_len,748 rctx->src_sent);749 rctx->hash_carry_len = rem;750 flow_log("Exiting with hash carry len: %u\n",751 rctx->hash_carry_len);752 packet_dump(" buf: ",753 rctx->hash_carry,754 rctx->hash_carry_len);755 return -EAGAIN;756 }757 }758 }759 760 /* if we have hash carry, then prefix it to the data in this request */761 local_nbuf = rctx->hash_carry_len;762 rctx->hash_carry_len = 0;763 if (local_nbuf)764 tx_frag_num++;765 new_data_len = chunksize - local_nbuf;766 767 /* Count number of sg entries to be used in this request */768 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip,769 new_data_len);770 771 /* AES hashing keeps key size in type field, so need to copy it here */772 if (hash_parms.alg == HASH_ALG_AES)773 hash_parms.type = (enum hash_type)cipher_parms.type;774 else775 hash_parms.type = spu->spu_hash_type(rctx->total_sent);776 777 digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg,778 hash_parms.type);779 hash_parms.digestsize = digestsize;780 781 /* update the indexes */782 rctx->total_sent += chunksize;783 /* if you sent a prebuf then that wasn't from this req->src */784 rctx->src_sent += new_data_len;785 786 if ((rctx->total_sent == rctx->total_todo) && rctx->is_final)787 hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg,788 hash_parms.mode,789 chunksize,790 blocksize);791 792 /*793 * If a non-first chunk, then include the digest returned from the794 * previous chunk so that hw can add to it (except for AES types).795 */796 if ((hash_parms.type == HASH_TYPE_UPDT) &&797 (hash_parms.alg != HASH_ALG_AES)) {798 hash_parms.key_buf = rctx->incr_hash;799 hash_parms.key_len = digestsize;800 }801 802 atomic64_add(chunksize, &iproc_priv.bytes_out);803 804 flow_log("%s() final: %u nbuf: %u ",805 __func__, rctx->is_final, local_nbuf);806 807 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)808 flow_log("max_payload infinite\n");809 else810 flow_log("max_payload %u\n", ctx->max_payload);811 812 flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize);813 814 /* Prepend SPU header with type 3 BCM header */815 memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);816 817 hash_parms.prebuf_len = local_nbuf;818 spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +819 BCM_HDR_LEN,820 &req_opts, &cipher_parms,821 &hash_parms, &aead_parms,822 new_data_len);823 824 if (spu_hdr_len == 0) {825 pr_err("Failed to create SPU request header\n");826 return -EFAULT;827 }828 829 /*830 * Determine total length of padding required. Put all padding in one831 * buffer.832 */833 data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize);834 db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len,835 0, 0, hash_parms.pad_len);836 if (spu->spu_tx_status_len())837 stat_pad_len = spu->spu_wordalign_padlen(db_size);838 if (stat_pad_len)839 rx_frag_num++;840 pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len;841 if (pad_len) {842 tx_frag_num++;843 spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len,844 hash_parms.pad_len, ctx->auth.alg,845 ctx->auth.mode, rctx->total_sent,846 stat_pad_len);847 }848 849 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,850 spu_hdr_len);851 packet_dump(" prebuf: ", rctx->hash_carry, local_nbuf);852 flow_log("Data:\n");853 dump_sg(rctx->src_sg, rctx->src_skip, new_data_len);854 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);855 856 /*857 * Build mailbox message containing SPU request msg and rx buffers858 * to catch response message859 */860 memset(mssg, 0, sizeof(*mssg));861 mssg->type = BRCM_MESSAGE_SPU;862 mssg->ctx = rctx; /* Will be returned in response */863 864 /* Create rx scatterlist to catch result */865 err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize,866 stat_pad_len);867 if (err)868 return err;869 870 /* Create tx scatterlist containing SPU request message */871 tx_frag_num += rctx->src_nents;872 if (spu->spu_tx_status_len())873 tx_frag_num++;874 err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,875 local_nbuf, new_data_len, pad_len);876 if (err)877 return err;878 879 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);880 if (unlikely(err < 0))881 return err;882 883 return -EINPROGRESS;884}885 886/**887 * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash888 * for an HMAC request.889 * @req: The HMAC request from the crypto API890 * @ctx: The session context891 *892 * Return: 0 if synchronous hash operation successful893 * -EINVAL if the hash algo is unrecognized894 * any other value indicates an error895 */896static int spu_hmac_outer_hash(struct ahash_request *req,897 struct iproc_ctx_s *ctx)898{899 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);900 unsigned int blocksize =901 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));902 int rc;903 904 switch (ctx->auth.alg) {905 case HASH_ALG_MD5:906 rc = do_shash("md5", req->result, ctx->opad, blocksize,907 req->result, ctx->digestsize, NULL, 0);908 break;909 case HASH_ALG_SHA1:910 rc = do_shash("sha1", req->result, ctx->opad, blocksize,911 req->result, ctx->digestsize, NULL, 0);912 break;913 case HASH_ALG_SHA224:914 rc = do_shash("sha224", req->result, ctx->opad, blocksize,915 req->result, ctx->digestsize, NULL, 0);916 break;917 case HASH_ALG_SHA256:918 rc = do_shash("sha256", req->result, ctx->opad, blocksize,919 req->result, ctx->digestsize, NULL, 0);920 break;921 case HASH_ALG_SHA384:922 rc = do_shash("sha384", req->result, ctx->opad, blocksize,923 req->result, ctx->digestsize, NULL, 0);924 break;925 case HASH_ALG_SHA512:926 rc = do_shash("sha512", req->result, ctx->opad, blocksize,927 req->result, ctx->digestsize, NULL, 0);928 break;929 default:930 pr_err("%s() Error : unknown hmac type\n", __func__);931 rc = -EINVAL;932 }933 return rc;934}935 936/**937 * ahash_req_done() - Process a hash result from the SPU hardware.938 * @rctx: Crypto request context939 *940 * Return: 0 if successful941 * < 0 if an error942 */943static int ahash_req_done(struct iproc_reqctx_s *rctx)944{945 struct spu_hw *spu = &iproc_priv.spu;946 struct crypto_async_request *areq = rctx->parent;947 struct ahash_request *req = ahash_request_cast(areq);948 struct iproc_ctx_s *ctx = rctx->ctx;949 int err;950 951 memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize);952 953 if (spu->spu_type == SPU_TYPE_SPUM) {954 /* byte swap the output from the UPDT function to network byte955 * order956 */957 if (ctx->auth.alg == HASH_ALG_MD5) {958 __swab32s((u32 *)req->result);959 __swab32s(((u32 *)req->result) + 1);960 __swab32s(((u32 *)req->result) + 2);961 __swab32s(((u32 *)req->result) + 3);962 __swab32s(((u32 *)req->result) + 4);963 }964 }965 966 flow_dump(" digest ", req->result, ctx->digestsize);967 968 /* if this an HMAC then do the outer hash */969 if (rctx->is_sw_hmac) {970 err = spu_hmac_outer_hash(req, ctx);971 if (err < 0)972 return err;973 flow_dump(" hmac: ", req->result, ctx->digestsize);974 }975 976 if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) {977 atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]);978 atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]);979 } else {980 atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]);981 atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]);982 }983 984 return 0;985}986 987/**988 * handle_ahash_resp() - Process a SPU response message for a hash request.989 * Checks if the entire crypto API request has been processed, and if so,990 * invokes post processing on the result.991 * @rctx: Crypto request context992 */993static void handle_ahash_resp(struct iproc_reqctx_s *rctx)994{995 struct iproc_ctx_s *ctx = rctx->ctx;996 struct crypto_async_request *areq = rctx->parent;997 struct ahash_request *req = ahash_request_cast(areq);998 struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);999 unsigned int blocksize =1000 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));1001 /*1002 * Save hash to use as input to next op if incremental. Might be copying1003 * too much, but that's easier than figuring out actual digest size here1004 */1005 memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE);1006 1007 flow_log("%s() blocksize:%u digestsize:%u\n",1008 __func__, blocksize, ctx->digestsize);1009 1010 atomic64_add(ctx->digestsize, &iproc_priv.bytes_in);1011 1012 if (rctx->is_final && (rctx->total_sent == rctx->total_todo))1013 ahash_req_done(rctx);1014}1015 1016/**1017 * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive1018 * a SPU response message for an AEAD request. Includes buffers to catch SPU1019 * message headers and the response data.1020 * @mssg: mailbox message containing the receive sg1021 * @req: Crypto API request1022 * @rctx: crypto request context1023 * @rx_frag_num: number of scatterlist elements required to hold the1024 * SPU response message1025 * @assoc_len: Length of associated data included in the crypto request1026 * @ret_iv_len: Length of IV returned in response1027 * @resp_len: Number of bytes of response data expected to be written to1028 * dst buffer from crypto API1029 * @digestsize: Length of hash digest, in bytes1030 * @stat_pad_len: Number of bytes required to pad the STAT field to1031 * a 4-byte boundary1032 *1033 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()1034 * when the request completes, whether the request is handled successfully or1035 * there is an error.1036 *1037 * Returns:1038 * 0 if successful1039 * < 0 if an error1040 */1041static int spu_aead_rx_sg_create(struct brcm_message *mssg,1042 struct aead_request *req,1043 struct iproc_reqctx_s *rctx,1044 u8 rx_frag_num,1045 unsigned int assoc_len,1046 u32 ret_iv_len, unsigned int resp_len,1047 unsigned int digestsize, u32 stat_pad_len)1048{1049 struct spu_hw *spu = &iproc_priv.spu;1050 struct scatterlist *sg; /* used to build sgs in mbox message */1051 struct iproc_ctx_s *ctx = rctx->ctx;1052 u32 datalen; /* Number of bytes of response data expected */1053 u32 assoc_buf_len;1054 u8 data_padlen = 0;1055 1056 if (ctx->is_rfc4543) {1057 /* RFC4543: only pad after data, not after AAD */1058 data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,1059 assoc_len + resp_len);1060 assoc_buf_len = assoc_len;1061 } else {1062 data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,1063 resp_len);1064 assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode,1065 assoc_len, ret_iv_len,1066 rctx->is_encrypt);1067 }1068 1069 if (ctx->cipher.mode == CIPHER_MODE_CCM)1070 /* ICV (after data) must be in the next 32-bit word for CCM */1071 data_padlen += spu->spu_wordalign_padlen(assoc_buf_len +1072 resp_len +1073 data_padlen);1074 1075 if (data_padlen)1076 /* have to catch gcm pad in separate buffer */1077 rx_frag_num++;1078 1079 mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),1080 rctx->gfp);1081 if (!mssg->spu.dst)1082 return -ENOMEM;1083 1084 sg = mssg->spu.dst;1085 sg_init_table(sg, rx_frag_num);1086 1087 /* Space for SPU message header */1088 sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);1089 1090 if (assoc_buf_len) {1091 /*1092 * Don't write directly to req->dst, because SPU may pad the1093 * assoc data in the response1094 */1095 memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len);1096 sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len);1097 }1098 1099 if (resp_len) {1100 /*1101 * Copy in each dst sg entry from request, up to chunksize.1102 * dst sg catches just the data. digest caught in separate buf.1103 */1104 datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,1105 rctx->dst_nents, resp_len);1106 if (datalen < (resp_len)) {1107 pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u",1108 __func__, resp_len, datalen);1109 return -EFAULT;1110 }1111 }1112 1113 /* If GCM/CCM data is padded, catch padding in separate buffer */1114 if (data_padlen) {1115 memset(rctx->msg_buf.a.gcmpad, 0, data_padlen);1116 sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen);1117 }1118 1119 /* Always catch ICV in separate buffer */1120 sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);1121 1122 flow_log("stat_pad_len %u\n", stat_pad_len);1123 if (stat_pad_len) {1124 memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len);1125 sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);1126 }1127 1128 memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);1129 sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());1130 1131 return 0;1132}1133 1134/**1135 * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a1136 * SPU request message for an AEAD request. Includes SPU message headers and the1137 * request data.1138 * @mssg: mailbox message containing the transmit sg1139 * @rctx: crypto request context1140 * @tx_frag_num: number of scatterlist elements required to construct the1141 * SPU request message1142 * @spu_hdr_len: length of SPU message header in bytes1143 * @assoc: crypto API associated data scatterlist1144 * @assoc_len: length of associated data1145 * @assoc_nents: number of scatterlist entries containing assoc data1146 * @aead_iv_len: length of AEAD IV, if included1147 * @chunksize: Number of bytes of request data1148 * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM.1149 * @pad_len: Number of pad bytes1150 * @incl_icv: If true, write separate ICV buffer after data and1151 * any padding1152 *1153 * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()1154 * when the request completes, whether the request is handled successfully or1155 * there is an error.1156 *1157 * Return:1158 * 0 if successful1159 * < 0 if an error1160 */1161static int spu_aead_tx_sg_create(struct brcm_message *mssg,1162 struct iproc_reqctx_s *rctx,1163 u8 tx_frag_num,1164 u32 spu_hdr_len,1165 struct scatterlist *assoc,1166 unsigned int assoc_len,1167 int assoc_nents,1168 unsigned int aead_iv_len,1169 unsigned int chunksize,1170 u32 aad_pad_len, u32 pad_len, bool incl_icv)1171{1172 struct spu_hw *spu = &iproc_priv.spu;1173 struct scatterlist *sg; /* used to build sgs in mbox message */1174 struct scatterlist *assoc_sg = assoc;1175 struct iproc_ctx_s *ctx = rctx->ctx;1176 u32 datalen; /* Number of bytes of data to write */1177 u32 written; /* Number of bytes of data written */1178 u32 assoc_offset = 0;1179 u32 stat_len;1180 1181 mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),1182 rctx->gfp);1183 if (!mssg->spu.src)1184 return -ENOMEM;1185 1186 sg = mssg->spu.src;1187 sg_init_table(sg, tx_frag_num);1188 1189 sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,1190 BCM_HDR_LEN + spu_hdr_len);1191 1192 if (assoc_len) {1193 /* Copy in each associated data sg entry from request */1194 written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset,1195 assoc_nents, assoc_len);1196 if (written < assoc_len) {1197 pr_err("%s(): failed to copy assoc sg to mbox msg",1198 __func__);1199 return -EFAULT;1200 }1201 }1202 1203 if (aead_iv_len)1204 sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len);1205 1206 if (aad_pad_len) {1207 memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len);1208 sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len);1209 }1210 1211 datalen = chunksize;1212 if ((chunksize > ctx->digestsize) && incl_icv)1213 datalen -= ctx->digestsize;1214 if (datalen) {1215 /* For aead, a single msg should consume the entire src sg */1216 written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,1217 rctx->src_nents, datalen);1218 if (written < datalen) {1219 pr_err("%s(): failed to copy src sg to mbox msg",1220 __func__);1221 return -EFAULT;1222 }1223 }1224 1225 if (pad_len) {1226 memset(rctx->msg_buf.spu_req_pad, 0, pad_len);1227 sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);1228 }1229 1230 if (incl_icv)1231 sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize);1232 1233 stat_len = spu->spu_tx_status_len();1234 if (stat_len) {1235 memset(rctx->msg_buf.tx_stat, 0, stat_len);1236 sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);1237 }1238 return 0;1239}1240 1241/**1242 * handle_aead_req() - Submit a SPU request message for the next chunk of the1243 * current AEAD request.1244 * @rctx: Crypto request context1245 *1246 * Unlike other operation types, we assume the length of the request fits in1247 * a single SPU request message. aead_enqueue() makes sure this is true.1248 * Comments for other op types regarding threads applies here as well.1249 *1250 * Unlike incremental hash ops, where the spu returns the entire hash for1251 * truncated algs like sha-224, the SPU returns just the truncated hash in1252 * response to aead requests. So digestsize is always ctx->digestsize here.1253 *1254 * Return: -EINPROGRESS: crypto request has been accepted and result will be1255 * returned asynchronously1256 * Any other value indicates an error1257 */1258static int handle_aead_req(struct iproc_reqctx_s *rctx)1259{1260 struct spu_hw *spu = &iproc_priv.spu;1261 struct crypto_async_request *areq = rctx->parent;1262 struct aead_request *req = container_of(areq,1263 struct aead_request, base);1264 struct iproc_ctx_s *ctx = rctx->ctx;1265 int err;1266 unsigned int chunksize;1267 unsigned int resp_len;1268 u32 spu_hdr_len;1269 u32 db_size;1270 u32 stat_pad_len;1271 u32 pad_len;1272 struct brcm_message *mssg; /* mailbox message */1273 struct spu_request_opts req_opts;1274 struct spu_cipher_parms cipher_parms;1275 struct spu_hash_parms hash_parms;1276 struct spu_aead_parms aead_parms;1277 int assoc_nents = 0;1278 bool incl_icv = false;1279 unsigned int digestsize = ctx->digestsize;1280 1281 /* number of entries in src and dst sg. Always includes SPU msg header.1282 */1283 u8 rx_frag_num = 2; /* and STATUS */1284 u8 tx_frag_num = 1;1285 1286 /* doing the whole thing at once */1287 chunksize = rctx->total_todo;1288 1289 flow_log("%s: chunksize %u\n", __func__, chunksize);1290 1291 memset(&req_opts, 0, sizeof(req_opts));1292 memset(&hash_parms, 0, sizeof(hash_parms));1293 memset(&aead_parms, 0, sizeof(aead_parms));1294 1295 req_opts.is_inbound = !(rctx->is_encrypt);1296 req_opts.auth_first = ctx->auth_first;1297 req_opts.is_aead = true;1298 req_opts.is_esp = ctx->is_esp;1299 1300 cipher_parms.alg = ctx->cipher.alg;1301 cipher_parms.mode = ctx->cipher.mode;1302 cipher_parms.type = ctx->cipher_type;1303 cipher_parms.key_buf = ctx->enckey;1304 cipher_parms.key_len = ctx->enckeylen;1305 cipher_parms.iv_buf = rctx->msg_buf.iv_ctr;1306 cipher_parms.iv_len = rctx->iv_ctr_len;1307 1308 hash_parms.alg = ctx->auth.alg;1309 hash_parms.mode = ctx->auth.mode;1310 hash_parms.type = HASH_TYPE_NONE;1311 hash_parms.key_buf = (u8 *)ctx->authkey;1312 hash_parms.key_len = ctx->authkeylen;1313 hash_parms.digestsize = digestsize;1314 1315 if ((ctx->auth.alg == HASH_ALG_SHA224) &&1316 (ctx->authkeylen < SHA224_DIGEST_SIZE))1317 hash_parms.key_len = SHA224_DIGEST_SIZE;1318 1319 aead_parms.assoc_size = req->assoclen;1320 if (ctx->is_esp && !ctx->is_rfc4543) {1321 /*1322 * 8-byte IV is included assoc data in request. SPU21323 * expects AAD to include just SPI and seqno. So1324 * subtract off the IV len.1325 */1326 aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE;1327 1328 if (rctx->is_encrypt) {1329 aead_parms.return_iv = true;1330 aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE;1331 aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE;1332 }1333 } else {1334 aead_parms.ret_iv_len = 0;1335 }1336 1337 /*1338 * Count number of sg entries from the crypto API request that are to1339 * be included in this mailbox message. For dst sg, don't count space1340 * for digest. Digest gets caught in a separate buffer and copied back1341 * to dst sg when processing response.1342 */1343 rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);1344 rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);1345 if (aead_parms.assoc_size)1346 assoc_nents = spu_sg_count(rctx->assoc, 0,1347 aead_parms.assoc_size);1348 1349 mssg = &rctx->mb_mssg;1350 1351 rctx->total_sent = chunksize;1352 rctx->src_sent = chunksize;1353 if (spu->spu_assoc_resp_len(ctx->cipher.mode,1354 aead_parms.assoc_size,1355 aead_parms.ret_iv_len,1356 rctx->is_encrypt))1357 rx_frag_num++;1358 1359 aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode,1360 rctx->iv_ctr_len);1361 1362 if (ctx->auth.alg == HASH_ALG_AES)1363 hash_parms.type = (enum hash_type)ctx->cipher_type;1364 1365 /* General case AAD padding (CCM and RFC4543 special cases below) */1366 aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,1367 aead_parms.assoc_size);1368 1369 /* General case data padding (CCM decrypt special case below) */1370 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,1371 chunksize);1372 1373 if (ctx->cipher.mode == CIPHER_MODE_CCM) {1374 /*1375 * for CCM, AAD len + 2 (rather than AAD len) needs to be1376 * 128-bit aligned1377 */1378 aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(1379 ctx->cipher.mode,1380 aead_parms.assoc_size + 2);1381 1382 /*1383 * And when decrypting CCM, need to pad without including1384 * size of ICV which is tacked on to end of chunk1385 */1386 if (!rctx->is_encrypt)1387 aead_parms.data_pad_len =1388 spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,1389 chunksize - digestsize);1390 1391 /* CCM also requires software to rewrite portions of IV: */1392 spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen,1393 chunksize, rctx->is_encrypt,1394 ctx->is_esp);1395 }1396 1397 if (ctx->is_rfc4543) {1398 /*1399 * RFC4543: data is included in AAD, so don't pad after AAD1400 * and pad data based on both AAD + data size1401 */1402 aead_parms.aad_pad_len = 0;1403 if (!rctx->is_encrypt)1404 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(1405 ctx->cipher.mode,1406 aead_parms.assoc_size + chunksize -1407 digestsize);1408 else1409 aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(1410 ctx->cipher.mode,1411 aead_parms.assoc_size + chunksize);1412 1413 req_opts.is_rfc4543 = true;1414 }1415 1416 if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) {1417 incl_icv = true;1418 tx_frag_num++;1419 /* Copy ICV from end of src scatterlist to digest buf */1420 sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize,1421 req->assoclen + rctx->total_sent -1422 digestsize);1423 }1424 1425 atomic64_add(chunksize, &iproc_priv.bytes_out);1426 1427 flow_log("%s()-sent chunksize:%u\n", __func__, chunksize);1428 1429 /* Prepend SPU header with type 3 BCM header */1430 memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);1431 1432 spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +1433 BCM_HDR_LEN, &req_opts,1434 &cipher_parms, &hash_parms,1435 &aead_parms, chunksize);1436 1437 /* Determine total length of padding. Put all padding in one buffer. */1438 db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0,1439 chunksize, aead_parms.aad_pad_len,1440 aead_parms.data_pad_len, 0);1441 1442 stat_pad_len = spu->spu_wordalign_padlen(db_size);1443 1444 if (stat_pad_len)1445 rx_frag_num++;1446 pad_len = aead_parms.data_pad_len + stat_pad_len;1447 if (pad_len) {1448 tx_frag_num++;1449 spu->spu_request_pad(rctx->msg_buf.spu_req_pad,1450 aead_parms.data_pad_len, 0,1451 ctx->auth.alg, ctx->auth.mode,1452 rctx->total_sent, stat_pad_len);1453 }1454 1455 spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,1456 spu_hdr_len);1457 dump_sg(rctx->assoc, 0, aead_parms.assoc_size);1458 packet_dump(" aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len);1459 packet_log("BD:\n");1460 dump_sg(rctx->src_sg, rctx->src_skip, chunksize);1461 packet_dump(" pad: ", rctx->msg_buf.spu_req_pad, pad_len);1462 1463 /*1464 * Build mailbox message containing SPU request msg and rx buffers1465 * to catch response message1466 */1467 memset(mssg, 0, sizeof(*mssg));1468 mssg->type = BRCM_MESSAGE_SPU;1469 mssg->ctx = rctx; /* Will be returned in response */1470 1471 /* Create rx scatterlist to catch result */1472 rx_frag_num += rctx->dst_nents;1473 resp_len = chunksize;1474 1475 /*1476 * Always catch ICV in separate buffer. Have to for GCM/CCM because of1477 * padding. Have to for SHA-224 and other truncated SHAs because SPU1478 * sends entire digest back.1479 */1480 rx_frag_num++;1481 1482 if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||1483 (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) {1484 /*1485 * Input is ciphertxt plus ICV, but ICV not incl1486 * in output.1487 */1488 resp_len -= ctx->digestsize;1489 if (resp_len == 0)1490 /* no rx frags to catch output data */1491 rx_frag_num -= rctx->dst_nents;1492 }1493 1494 err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num,1495 aead_parms.assoc_size,1496 aead_parms.ret_iv_len, resp_len, digestsize,1497 stat_pad_len);1498 if (err)1499 return err;1500 1501 /* Create tx scatterlist containing SPU request message */1502 tx_frag_num += rctx->src_nents;1503 tx_frag_num += assoc_nents;1504 if (aead_parms.aad_pad_len)1505 tx_frag_num++;1506 if (aead_parms.iv_len)1507 tx_frag_num++;1508 if (spu->spu_tx_status_len())1509 tx_frag_num++;1510 err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,1511 rctx->assoc, aead_parms.assoc_size,1512 assoc_nents, aead_parms.iv_len, chunksize,1513 aead_parms.aad_pad_len, pad_len, incl_icv);1514 if (err)1515 return err;1516 1517 err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);1518 if (unlikely(err < 0))1519 return err;1520 1521 return -EINPROGRESS;1522}1523 1524/**1525 * handle_aead_resp() - Process a SPU response message for an AEAD request.1526 * @rctx: Crypto request context1527 */1528static void handle_aead_resp(struct iproc_reqctx_s *rctx)1529{1530 struct spu_hw *spu = &iproc_priv.spu;1531 struct crypto_async_request *areq = rctx->parent;1532 struct aead_request *req = container_of(areq,1533 struct aead_request, base);1534 struct iproc_ctx_s *ctx = rctx->ctx;1535 u32 payload_len;1536 unsigned int icv_offset;1537 u32 result_len;1538 1539 /* See how much data was returned */1540 payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);1541 flow_log("payload_len %u\n", payload_len);1542 1543 /* only count payload */1544 atomic64_add(payload_len, &iproc_priv.bytes_in);1545 1546 if (req->assoclen)1547 packet_dump(" assoc_data ", rctx->msg_buf.a.resp_aad,1548 req->assoclen);1549 1550 /*1551 * Copy the ICV back to the destination1552 * buffer. In decrypt case, SPU gives us back the digest, but crypto1553 * API doesn't expect ICV in dst buffer.1554 */1555 result_len = req->cryptlen;1556 if (rctx->is_encrypt) {1557 icv_offset = req->assoclen + rctx->total_sent;1558 packet_dump(" ICV: ", rctx->msg_buf.digest, ctx->digestsize);1559 flow_log("copying ICV to dst sg at offset %u\n", icv_offset);1560 sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest,1561 ctx->digestsize, icv_offset);1562 result_len += ctx->digestsize;1563 }1564 1565 packet_log("response data: ");1566 dump_sg(req->dst, req->assoclen, result_len);1567 1568 atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]);1569 if (ctx->cipher.alg == CIPHER_ALG_AES) {1570 if (ctx->cipher.mode == CIPHER_MODE_CCM)1571 atomic_inc(&iproc_priv.aead_cnt[AES_CCM]);1572 else if (ctx->cipher.mode == CIPHER_MODE_GCM)1573 atomic_inc(&iproc_priv.aead_cnt[AES_GCM]);1574 else1575 atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);1576 } else {1577 atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);1578 }1579}1580 1581/**1582 * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request1583 * @rctx: request context1584 *1585 * Mailbox scatterlists are allocated for each chunk. So free them after1586 * processing each chunk.1587 */1588static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx)1589{1590 /* mailbox message used to tx request */1591 struct brcm_message *mssg = &rctx->mb_mssg;1592 1593 kfree(mssg->spu.src);1594 kfree(mssg->spu.dst);1595 memset(mssg, 0, sizeof(struct brcm_message));1596}1597 1598/**1599 * finish_req() - Used to invoke the complete callback from the requester when1600 * a request has been handled asynchronously.1601 * @rctx: Request context1602 * @err: Indicates whether the request was successful or not1603 *1604 * Ensures that cleanup has been done for request1605 */1606static void finish_req(struct iproc_reqctx_s *rctx, int err)1607{1608 struct crypto_async_request *areq = rctx->parent;1609 1610 flow_log("%s() err:%d\n\n", __func__, err);1611 1612 /* No harm done if already called */1613 spu_chunk_cleanup(rctx);1614 1615 if (areq)1616 crypto_request_complete(areq, err);1617}1618 1619/**1620 * spu_rx_callback() - Callback from mailbox framework with a SPU response.1621 * @cl: mailbox client structure for SPU driver1622 * @msg: mailbox message containing SPU response1623 */1624static void spu_rx_callback(struct mbox_client *cl, void *msg)1625{1626 struct spu_hw *spu = &iproc_priv.spu;1627 struct brcm_message *mssg = msg;1628 struct iproc_reqctx_s *rctx;1629 int err;1630 1631 rctx = mssg->ctx;1632 if (unlikely(!rctx)) {1633 /* This is fatal */1634 pr_err("%s(): no request context", __func__);1635 err = -EFAULT;1636 goto cb_finish;1637 }1638 1639 /* process the SPU status */1640 err = spu->spu_status_process(rctx->msg_buf.rx_stat);1641 if (err != 0) {1642 if (err == SPU_INVALID_ICV)1643 atomic_inc(&iproc_priv.bad_icv);1644 err = -EBADMSG;1645 goto cb_finish;1646 }1647 1648 /* Process the SPU response message */1649 switch (rctx->ctx->alg->type) {1650 case CRYPTO_ALG_TYPE_SKCIPHER:1651 handle_skcipher_resp(rctx);1652 break;1653 case CRYPTO_ALG_TYPE_AHASH:1654 handle_ahash_resp(rctx);1655 break;1656 case CRYPTO_ALG_TYPE_AEAD:1657 handle_aead_resp(rctx);1658 break;1659 default:1660 err = -EINVAL;1661 goto cb_finish;1662 }1663 1664 /*1665 * If this response does not complete the request, then send the next1666 * request chunk.1667 */1668 if (rctx->total_sent < rctx->total_todo) {1669 /* Deallocate anything specific to previous chunk */1670 spu_chunk_cleanup(rctx);1671 1672 switch (rctx->ctx->alg->type) {1673 case CRYPTO_ALG_TYPE_SKCIPHER:1674 err = handle_skcipher_req(rctx);1675 break;1676 case CRYPTO_ALG_TYPE_AHASH:1677 err = handle_ahash_req(rctx);1678 if (err == -EAGAIN)1679 /*1680 * we saved data in hash carry, but tell crypto1681 * API we successfully completed request.1682 */1683 err = 0;1684 break;1685 case CRYPTO_ALG_TYPE_AEAD:1686 err = handle_aead_req(rctx);1687 break;1688 default:1689 err = -EINVAL;1690 }1691 1692 if (err == -EINPROGRESS)1693 /* Successfully submitted request for next chunk */1694 return;1695 }1696 1697cb_finish:1698 finish_req(rctx, err);1699}1700 1701/* ==================== Kernel Cryptographic API ==================== */1702 1703/**1704 * skcipher_enqueue() - Handle skcipher encrypt or decrypt request.1705 * @req: Crypto API request1706 * @encrypt: true if encrypting; false if decrypting1707 *1708 * Return: -EINPROGRESS if request accepted and result will be returned1709 * asynchronously1710 * < 0 if an error1711 */1712static int skcipher_enqueue(struct skcipher_request *req, bool encrypt)1713{1714 struct iproc_reqctx_s *rctx = skcipher_request_ctx(req);1715 struct iproc_ctx_s *ctx =1716 crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));1717 int err;1718 1719 flow_log("%s() enc:%u\n", __func__, encrypt);1720 1721 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |1722 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;1723 rctx->parent = &req->base;1724 rctx->is_encrypt = encrypt;1725 rctx->bd_suppress = false;1726 rctx->total_todo = req->cryptlen;1727 rctx->src_sent = 0;1728 rctx->total_sent = 0;1729 rctx->total_received = 0;1730 rctx->ctx = ctx;1731 1732 /* Initialize current position in src and dst scatterlists */1733 rctx->src_sg = req->src;1734 rctx->src_nents = 0;1735 rctx->src_skip = 0;1736 rctx->dst_sg = req->dst;1737 rctx->dst_nents = 0;1738 rctx->dst_skip = 0;1739 1740 if (ctx->cipher.mode == CIPHER_MODE_CBC ||1741 ctx->cipher.mode == CIPHER_MODE_CTR ||1742 ctx->cipher.mode == CIPHER_MODE_OFB ||1743 ctx->cipher.mode == CIPHER_MODE_XTS ||1744 ctx->cipher.mode == CIPHER_MODE_GCM ||1745 ctx->cipher.mode == CIPHER_MODE_CCM) {1746 rctx->iv_ctr_len =1747 crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req));1748 memcpy(rctx->msg_buf.iv_ctr, req->iv, rctx->iv_ctr_len);1749 } else {1750 rctx->iv_ctr_len = 0;1751 }1752 1753 /* Choose a SPU to process this request */1754 rctx->chan_idx = select_channel();1755 err = handle_skcipher_req(rctx);1756 if (err != -EINPROGRESS)1757 /* synchronous result */1758 spu_chunk_cleanup(rctx);1759 1760 return err;1761}1762 1763static int des_setkey(struct crypto_skcipher *cipher, const u8 *key,1764 unsigned int keylen)1765{1766 struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);1767 int err;1768 1769 err = verify_skcipher_des_key(cipher, key);1770 if (err)1771 return err;1772 1773 ctx->cipher_type = CIPHER_TYPE_DES;1774 return 0;1775}1776 1777static int threedes_setkey(struct crypto_skcipher *cipher, const u8 *key,1778 unsigned int keylen)1779{1780 struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);1781 int err;1782 1783 err = verify_skcipher_des3_key(cipher, key);1784 if (err)1785 return err;1786 1787 ctx->cipher_type = CIPHER_TYPE_3DES;1788 return 0;1789}1790 1791static int aes_setkey(struct crypto_skcipher *cipher, const u8 *key,1792 unsigned int keylen)1793{1794 struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);1795 1796 if (ctx->cipher.mode == CIPHER_MODE_XTS)1797 /* XTS includes two keys of equal length */1798 keylen = keylen / 2;1799 1800 switch (keylen) {1801 case AES_KEYSIZE_128:1802 ctx->cipher_type = CIPHER_TYPE_AES128;1803 break;1804 case AES_KEYSIZE_192:1805 ctx->cipher_type = CIPHER_TYPE_AES192;1806 break;1807 case AES_KEYSIZE_256:1808 ctx->cipher_type = CIPHER_TYPE_AES256;1809 break;1810 default:1811 return -EINVAL;1812 }1813 WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&1814 ((ctx->max_payload % AES_BLOCK_SIZE) != 0));1815 return 0;1816}1817 1818static int skcipher_setkey(struct crypto_skcipher *cipher, const u8 *key,1819 unsigned int keylen)1820{1821 struct spu_hw *spu = &iproc_priv.spu;1822 struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);1823 struct spu_cipher_parms cipher_parms;1824 u32 alloc_len = 0;1825 int err;1826 1827 flow_log("skcipher_setkey() keylen: %d\n", keylen);1828 flow_dump(" key: ", key, keylen);1829 1830 switch (ctx->cipher.alg) {1831 case CIPHER_ALG_DES:1832 err = des_setkey(cipher, key, keylen);1833 break;1834 case CIPHER_ALG_3DES:1835 err = threedes_setkey(cipher, key, keylen);1836 break;1837 case CIPHER_ALG_AES:1838 err = aes_setkey(cipher, key, keylen);1839 break;1840 default:1841 pr_err("%s() Error: unknown cipher alg\n", __func__);1842 err = -EINVAL;1843 }1844 if (err)1845 return err;1846 1847 memcpy(ctx->enckey, key, keylen);1848 ctx->enckeylen = keylen;1849 1850 /* SPU needs XTS keys in the reverse order the crypto API presents */1851 if ((ctx->cipher.alg == CIPHER_ALG_AES) &&1852 (ctx->cipher.mode == CIPHER_MODE_XTS)) {1853 unsigned int xts_keylen = keylen / 2;1854 1855 memcpy(ctx->enckey, key + xts_keylen, xts_keylen);1856 memcpy(ctx->enckey + xts_keylen, key, xts_keylen);1857 }1858 1859 if (spu->spu_type == SPU_TYPE_SPUM)1860 alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN;1861 else if (spu->spu_type == SPU_TYPE_SPU2)1862 alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN;1863 memset(ctx->bcm_spu_req_hdr, 0, alloc_len);1864 cipher_parms.iv_buf = NULL;1865 cipher_parms.iv_len = crypto_skcipher_ivsize(cipher);1866 flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len);1867 1868 cipher_parms.alg = ctx->cipher.alg;1869 cipher_parms.mode = ctx->cipher.mode;1870 cipher_parms.type = ctx->cipher_type;1871 cipher_parms.key_buf = ctx->enckey;1872 cipher_parms.key_len = ctx->enckeylen;1873 1874 /* Prepend SPU request message with BCM header */1875 memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);1876 ctx->spu_req_hdr_len =1877 spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN,1878 &cipher_parms);1879 1880 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,1881 ctx->enckeylen,1882 false);1883 1884 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]);1885 1886 return 0;1887}1888 1889static int skcipher_encrypt(struct skcipher_request *req)1890{1891 flow_log("skcipher_encrypt() nbytes:%u\n", req->cryptlen);1892 1893 return skcipher_enqueue(req, true);1894}1895 1896static int skcipher_decrypt(struct skcipher_request *req)1897{1898 flow_log("skcipher_decrypt() nbytes:%u\n", req->cryptlen);1899 return skcipher_enqueue(req, false);1900}1901 1902static int ahash_enqueue(struct ahash_request *req)1903{1904 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);1905 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);1906 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);1907 int err;1908 const char *alg_name;1909 1910 flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes);1911 1912 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |1913 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;1914 rctx->parent = &req->base;1915 rctx->ctx = ctx;1916 rctx->bd_suppress = true;1917 memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));1918 1919 /* Initialize position in src scatterlist */1920 rctx->src_sg = req->src;1921 rctx->src_skip = 0;1922 rctx->src_nents = 0;1923 rctx->dst_sg = NULL;1924 rctx->dst_skip = 0;1925 rctx->dst_nents = 0;1926 1927 /* SPU2 hardware does not compute hash of zero length data */1928 if ((rctx->is_final == 1) && (rctx->total_todo == 0) &&1929 (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) {1930 alg_name = crypto_ahash_alg_name(tfm);1931 flow_log("Doing %sfinal %s zero-len hash request in software\n",1932 rctx->is_final ? "" : "non-", alg_name);1933 err = do_shash((unsigned char *)alg_name, req->result,1934 NULL, 0, NULL, 0, ctx->authkey,1935 ctx->authkeylen);1936 if (err < 0)1937 flow_log("Hash request failed with error %d\n", err);1938 return err;1939 }1940 /* Choose a SPU to process this request */1941 rctx->chan_idx = select_channel();1942 1943 err = handle_ahash_req(rctx);1944 if (err != -EINPROGRESS)1945 /* synchronous result */1946 spu_chunk_cleanup(rctx);1947 1948 if (err == -EAGAIN)1949 /*1950 * we saved data in hash carry, but tell crypto API1951 * we successfully completed request.1952 */1953 err = 0;1954 1955 return err;1956}1957 1958static int __ahash_init(struct ahash_request *req)1959{1960 struct spu_hw *spu = &iproc_priv.spu;1961 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);1962 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);1963 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);1964 1965 flow_log("%s()\n", __func__);1966 1967 /* Initialize the context */1968 rctx->hash_carry_len = 0;1969 rctx->is_final = 0;1970 1971 rctx->total_todo = 0;1972 rctx->src_sent = 0;1973 rctx->total_sent = 0;1974 rctx->total_received = 0;1975 1976 ctx->digestsize = crypto_ahash_digestsize(tfm);1977 /* If we add a hash whose digest is larger, catch it here. */1978 WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE);1979 1980 rctx->is_sw_hmac = false;1981 1982 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0,1983 true);1984 1985 return 0;1986}1987 1988/**1989 * spu_no_incr_hash() - Determine whether incremental hashing is supported.1990 * @ctx: Crypto session context1991 *1992 * SPU-2 does not support incremental hashing (we'll have to revisit and1993 * condition based on chip revision or device tree entry if future versions do1994 * support incremental hash)1995 *1996 * SPU-M also doesn't support incremental hashing of AES-XCBC1997 *1998 * Return: true if incremental hashing is not supported1999 * false otherwise2000 */2001static bool spu_no_incr_hash(struct iproc_ctx_s *ctx)2002{2003 struct spu_hw *spu = &iproc_priv.spu;2004 2005 if (spu->spu_type == SPU_TYPE_SPU2)2006 return true;2007 2008 if ((ctx->auth.alg == HASH_ALG_AES) &&2009 (ctx->auth.mode == HASH_MODE_XCBC))2010 return true;2011 2012 /* Otherwise, incremental hashing is supported */2013 return false;2014}2015 2016static int ahash_init(struct ahash_request *req)2017{2018 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2019 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2020 const char *alg_name;2021 struct crypto_shash *hash;2022 int ret;2023 gfp_t gfp;2024 2025 if (spu_no_incr_hash(ctx)) {2026 /*2027 * If we get an incremental hashing request and it's not2028 * supported by the hardware, we need to handle it in software2029 * by calling synchronous hash functions.2030 */2031 alg_name = crypto_ahash_alg_name(tfm);2032 hash = crypto_alloc_shash(alg_name, 0, 0);2033 if (IS_ERR(hash)) {2034 ret = PTR_ERR(hash);2035 goto err;2036 }2037 2038 gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |2039 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;2040 ctx->shash = kmalloc(sizeof(*ctx->shash) +2041 crypto_shash_descsize(hash), gfp);2042 if (!ctx->shash) {2043 ret = -ENOMEM;2044 goto err_hash;2045 }2046 ctx->shash->tfm = hash;2047 2048 /* Set the key using data we already have from setkey */2049 if (ctx->authkeylen > 0) {2050 ret = crypto_shash_setkey(hash, ctx->authkey,2051 ctx->authkeylen);2052 if (ret)2053 goto err_shash;2054 }2055 2056 /* Initialize hash w/ this key and other params */2057 ret = crypto_shash_init(ctx->shash);2058 if (ret)2059 goto err_shash;2060 } else {2061 /* Otherwise call the internal function which uses SPU hw */2062 ret = __ahash_init(req);2063 }2064 2065 return ret;2066 2067err_shash:2068 kfree(ctx->shash);2069err_hash:2070 crypto_free_shash(hash);2071err:2072 return ret;2073}2074 2075static int __ahash_update(struct ahash_request *req)2076{2077 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2078 2079 flow_log("ahash_update() nbytes:%u\n", req->nbytes);2080 2081 if (!req->nbytes)2082 return 0;2083 rctx->total_todo += req->nbytes;2084 rctx->src_sent = 0;2085 2086 return ahash_enqueue(req);2087}2088 2089static int ahash_update(struct ahash_request *req)2090{2091 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2092 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2093 u8 *tmpbuf;2094 int ret;2095 int nents;2096 gfp_t gfp;2097 2098 if (spu_no_incr_hash(ctx)) {2099 /*2100 * If we get an incremental hashing request and it's not2101 * supported by the hardware, we need to handle it in software2102 * by calling synchronous hash functions.2103 */2104 if (req->src)2105 nents = sg_nents(req->src);2106 else2107 return -EINVAL;2108 2109 /* Copy data from req scatterlist to tmp buffer */2110 gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |2111 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;2112 tmpbuf = kmalloc(req->nbytes, gfp);2113 if (!tmpbuf)2114 return -ENOMEM;2115 2116 if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=2117 req->nbytes) {2118 kfree(tmpbuf);2119 return -EINVAL;2120 }2121 2122 /* Call synchronous update */2123 ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes);2124 kfree(tmpbuf);2125 } else {2126 /* Otherwise call the internal function which uses SPU hw */2127 ret = __ahash_update(req);2128 }2129 2130 return ret;2131}2132 2133static int __ahash_final(struct ahash_request *req)2134{2135 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2136 2137 flow_log("ahash_final() nbytes:%u\n", req->nbytes);2138 2139 rctx->is_final = 1;2140 2141 return ahash_enqueue(req);2142}2143 2144static int ahash_final(struct ahash_request *req)2145{2146 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2147 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2148 int ret;2149 2150 if (spu_no_incr_hash(ctx)) {2151 /*2152 * If we get an incremental hashing request and it's not2153 * supported by the hardware, we need to handle it in software2154 * by calling synchronous hash functions.2155 */2156 ret = crypto_shash_final(ctx->shash, req->result);2157 2158 /* Done with hash, can deallocate it now */2159 crypto_free_shash(ctx->shash->tfm);2160 kfree(ctx->shash);2161 2162 } else {2163 /* Otherwise call the internal function which uses SPU hw */2164 ret = __ahash_final(req);2165 }2166 2167 return ret;2168}2169 2170static int __ahash_finup(struct ahash_request *req)2171{2172 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2173 2174 flow_log("ahash_finup() nbytes:%u\n", req->nbytes);2175 2176 rctx->total_todo += req->nbytes;2177 rctx->src_sent = 0;2178 rctx->is_final = 1;2179 2180 return ahash_enqueue(req);2181}2182 2183static int ahash_finup(struct ahash_request *req)2184{2185 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2186 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2187 u8 *tmpbuf;2188 int ret;2189 int nents;2190 gfp_t gfp;2191 2192 if (spu_no_incr_hash(ctx)) {2193 /*2194 * If we get an incremental hashing request and it's not2195 * supported by the hardware, we need to handle it in software2196 * by calling synchronous hash functions.2197 */2198 if (req->src) {2199 nents = sg_nents(req->src);2200 } else {2201 ret = -EINVAL;2202 goto ahash_finup_exit;2203 }2204 2205 /* Copy data from req scatterlist to tmp buffer */2206 gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |2207 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;2208 tmpbuf = kmalloc(req->nbytes, gfp);2209 if (!tmpbuf) {2210 ret = -ENOMEM;2211 goto ahash_finup_exit;2212 }2213 2214 if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=2215 req->nbytes) {2216 ret = -EINVAL;2217 goto ahash_finup_free;2218 }2219 2220 /* Call synchronous update */2221 ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes,2222 req->result);2223 } else {2224 /* Otherwise call the internal function which uses SPU hw */2225 return __ahash_finup(req);2226 }2227ahash_finup_free:2228 kfree(tmpbuf);2229 2230ahash_finup_exit:2231 /* Done with hash, can deallocate it now */2232 crypto_free_shash(ctx->shash->tfm);2233 kfree(ctx->shash);2234 return ret;2235}2236 2237static int ahash_digest(struct ahash_request *req)2238{2239 int err;2240 2241 flow_log("ahash_digest() nbytes:%u\n", req->nbytes);2242 2243 /* whole thing at once */2244 err = __ahash_init(req);2245 if (!err)2246 err = __ahash_finup(req);2247 2248 return err;2249}2250 2251static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key,2252 unsigned int keylen)2253{2254 struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);2255 2256 flow_log("%s() ahash:%p key:%p keylen:%u\n",2257 __func__, ahash, key, keylen);2258 flow_dump(" key: ", key, keylen);2259 2260 if (ctx->auth.alg == HASH_ALG_AES) {2261 switch (keylen) {2262 case AES_KEYSIZE_128:2263 ctx->cipher_type = CIPHER_TYPE_AES128;2264 break;2265 case AES_KEYSIZE_192:2266 ctx->cipher_type = CIPHER_TYPE_AES192;2267 break;2268 case AES_KEYSIZE_256:2269 ctx->cipher_type = CIPHER_TYPE_AES256;2270 break;2271 default:2272 pr_err("%s() Error: Invalid key length\n", __func__);2273 return -EINVAL;2274 }2275 } else {2276 pr_err("%s() Error: unknown hash alg\n", __func__);2277 return -EINVAL;2278 }2279 memcpy(ctx->authkey, key, keylen);2280 ctx->authkeylen = keylen;2281 2282 return 0;2283}2284 2285static int ahash_export(struct ahash_request *req, void *out)2286{2287 const struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2288 struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out;2289 2290 spu_exp->total_todo = rctx->total_todo;2291 spu_exp->total_sent = rctx->total_sent;2292 spu_exp->is_sw_hmac = rctx->is_sw_hmac;2293 memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry));2294 spu_exp->hash_carry_len = rctx->hash_carry_len;2295 memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash));2296 2297 return 0;2298}2299 2300static int ahash_import(struct ahash_request *req, const void *in)2301{2302 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2303 struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in;2304 2305 rctx->total_todo = spu_exp->total_todo;2306 rctx->total_sent = spu_exp->total_sent;2307 rctx->is_sw_hmac = spu_exp->is_sw_hmac;2308 memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry));2309 rctx->hash_carry_len = spu_exp->hash_carry_len;2310 memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash));2311 2312 return 0;2313}2314 2315static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key,2316 unsigned int keylen)2317{2318 struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);2319 unsigned int blocksize =2320 crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));2321 unsigned int digestsize = crypto_ahash_digestsize(ahash);2322 unsigned int index;2323 int rc;2324 2325 flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n",2326 __func__, ahash, key, keylen, blocksize, digestsize);2327 flow_dump(" key: ", key, keylen);2328 2329 if (keylen > blocksize) {2330 switch (ctx->auth.alg) {2331 case HASH_ALG_MD5:2332 rc = do_shash("md5", ctx->authkey, key, keylen, NULL,2333 0, NULL, 0);2334 break;2335 case HASH_ALG_SHA1:2336 rc = do_shash("sha1", ctx->authkey, key, keylen, NULL,2337 0, NULL, 0);2338 break;2339 case HASH_ALG_SHA224:2340 rc = do_shash("sha224", ctx->authkey, key, keylen, NULL,2341 0, NULL, 0);2342 break;2343 case HASH_ALG_SHA256:2344 rc = do_shash("sha256", ctx->authkey, key, keylen, NULL,2345 0, NULL, 0);2346 break;2347 case HASH_ALG_SHA384:2348 rc = do_shash("sha384", ctx->authkey, key, keylen, NULL,2349 0, NULL, 0);2350 break;2351 case HASH_ALG_SHA512:2352 rc = do_shash("sha512", ctx->authkey, key, keylen, NULL,2353 0, NULL, 0);2354 break;2355 case HASH_ALG_SHA3_224:2356 rc = do_shash("sha3-224", ctx->authkey, key, keylen,2357 NULL, 0, NULL, 0);2358 break;2359 case HASH_ALG_SHA3_256:2360 rc = do_shash("sha3-256", ctx->authkey, key, keylen,2361 NULL, 0, NULL, 0);2362 break;2363 case HASH_ALG_SHA3_384:2364 rc = do_shash("sha3-384", ctx->authkey, key, keylen,2365 NULL, 0, NULL, 0);2366 break;2367 case HASH_ALG_SHA3_512:2368 rc = do_shash("sha3-512", ctx->authkey, key, keylen,2369 NULL, 0, NULL, 0);2370 break;2371 default:2372 pr_err("%s() Error: unknown hash alg\n", __func__);2373 return -EINVAL;2374 }2375 if (rc < 0) {2376 pr_err("%s() Error %d computing shash for %s\n",2377 __func__, rc, hash_alg_name[ctx->auth.alg]);2378 return rc;2379 }2380 ctx->authkeylen = digestsize;2381 2382 flow_log(" keylen > digestsize... hashed\n");2383 flow_dump(" newkey: ", ctx->authkey, ctx->authkeylen);2384 } else {2385 memcpy(ctx->authkey, key, keylen);2386 ctx->authkeylen = keylen;2387 }2388 2389 /*2390 * Full HMAC operation in SPUM is not verified,2391 * So keeping the generation of IPAD, OPAD and2392 * outer hashing in software.2393 */2394 if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) {2395 memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen);2396 memset(ctx->ipad + ctx->authkeylen, 0,2397 blocksize - ctx->authkeylen);2398 ctx->authkeylen = 0;2399 unsafe_memcpy(ctx->opad, ctx->ipad, blocksize,2400 "fortified memcpy causes -Wrestrict warning");2401 2402 for (index = 0; index < blocksize; index++) {2403 ctx->ipad[index] ^= HMAC_IPAD_VALUE;2404 ctx->opad[index] ^= HMAC_OPAD_VALUE;2405 }2406 2407 flow_dump(" ipad: ", ctx->ipad, blocksize);2408 flow_dump(" opad: ", ctx->opad, blocksize);2409 }2410 ctx->digestsize = digestsize;2411 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]);2412 2413 return 0;2414}2415 2416static int ahash_hmac_init(struct ahash_request *req)2417{2418 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2419 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2420 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2421 unsigned int blocksize =2422 crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));2423 2424 flow_log("ahash_hmac_init()\n");2425 2426 /* init the context as a hash */2427 ahash_init(req);2428 2429 if (!spu_no_incr_hash(ctx)) {2430 /* SPU-M can do incr hashing but needs sw for outer HMAC */2431 rctx->is_sw_hmac = true;2432 ctx->auth.mode = HASH_MODE_HASH;2433 /* start with a prepended ipad */2434 memcpy(rctx->hash_carry, ctx->ipad, blocksize);2435 rctx->hash_carry_len = blocksize;2436 rctx->total_todo += blocksize;2437 }2438 2439 return 0;2440}2441 2442static int ahash_hmac_update(struct ahash_request *req)2443{2444 flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes);2445 2446 if (!req->nbytes)2447 return 0;2448 2449 return ahash_update(req);2450}2451 2452static int ahash_hmac_final(struct ahash_request *req)2453{2454 flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes);2455 2456 return ahash_final(req);2457}2458 2459static int ahash_hmac_finup(struct ahash_request *req)2460{2461 flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes);2462 2463 return ahash_finup(req);2464}2465 2466static int ahash_hmac_digest(struct ahash_request *req)2467{2468 struct iproc_reqctx_s *rctx = ahash_request_ctx(req);2469 struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);2470 struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);2471 unsigned int blocksize =2472 crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));2473 2474 flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes);2475 2476 /* Perform initialization and then call finup */2477 __ahash_init(req);2478 2479 if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) {2480 /*2481 * SPU2 supports full HMAC implementation in the2482 * hardware, need not to generate IPAD, OPAD and2483 * outer hash in software.2484 * Only for hash key len > hash block size, SPU22485 * expects to perform hashing on the key, shorten2486 * it to digest size and feed it as hash key.2487 */2488 rctx->is_sw_hmac = false;2489 ctx->auth.mode = HASH_MODE_HMAC;2490 } else {2491 rctx->is_sw_hmac = true;2492 ctx->auth.mode = HASH_MODE_HASH;2493 /* start with a prepended ipad */2494 memcpy(rctx->hash_carry, ctx->ipad, blocksize);2495 rctx->hash_carry_len = blocksize;2496 rctx->total_todo += blocksize;2497 }2498 2499 return __ahash_finup(req);2500}2501 2502/* aead helpers */2503 2504static int aead_need_fallback(struct aead_request *req)2505{2506 struct iproc_reqctx_s *rctx = aead_request_ctx(req);2507 struct spu_hw *spu = &iproc_priv.spu;2508 struct crypto_aead *aead = crypto_aead_reqtfm(req);2509 struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);2510 u32 payload_len;2511 2512 /*2513 * SPU hardware cannot handle the AES-GCM/CCM case where plaintext2514 * and AAD are both 0 bytes long. So use fallback in this case.2515 */2516 if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||2517 (ctx->cipher.mode == CIPHER_MODE_CCM)) &&2518 (req->assoclen == 0)) {2519 if ((rctx->is_encrypt && (req->cryptlen == 0)) ||2520 (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) {2521 flow_log("AES GCM/CCM needs fallback for 0 len req\n");2522 return 1;2523 }2524 }2525 2526 /* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */2527 if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&2528 (spu->spu_type == SPU_TYPE_SPUM) &&2529 (ctx->digestsize != 8) && (ctx->digestsize != 12) &&2530 (ctx->digestsize != 16)) {2531 flow_log("%s() AES CCM needs fallback for digest size %d\n",2532 __func__, ctx->digestsize);2533 return 1;2534 }2535 2536 /*2537 * SPU-M on NSP has an issue where AES-CCM hash is not correct2538 * when AAD size is 02539 */2540 if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&2541 (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) &&2542 (req->assoclen == 0)) {2543 flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n",2544 __func__);2545 return 1;2546 }2547 2548 /*2549 * RFC4106 and RFC4543 cannot handle the case where AAD is other than2550 * 16 or 20 bytes long. So use fallback in this case.2551 */2552 if (ctx->cipher.mode == CIPHER_MODE_GCM &&2553 ctx->cipher.alg == CIPHER_ALG_AES &&2554 rctx->iv_ctr_len == GCM_RFC4106_IV_SIZE &&2555 req->assoclen != 16 && req->assoclen != 20) {2556 flow_log("RFC4106/RFC4543 needs fallback for assoclen"2557 " other than 16 or 20 bytes\n");2558 return 1;2559 }2560 2561 payload_len = req->cryptlen;2562 if (spu->spu_type == SPU_TYPE_SPUM)2563 payload_len += req->assoclen;2564 2565 flow_log("%s() payload len: %u\n", __func__, payload_len);2566 2567 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)2568 return 0;2569 else2570 return payload_len > ctx->max_payload;2571}2572 2573static int aead_do_fallback(struct aead_request *req, bool is_encrypt)2574{2575 struct crypto_aead *aead = crypto_aead_reqtfm(req);2576 struct crypto_tfm *tfm = crypto_aead_tfm(aead);2577 struct iproc_reqctx_s *rctx = aead_request_ctx(req);2578 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);2579 struct aead_request *subreq;2580 2581 flow_log("%s() enc:%u\n", __func__, is_encrypt);2582 2583 if (!ctx->fallback_cipher)2584 return -EINVAL;2585 2586 subreq = &rctx->req;2587 aead_request_set_tfm(subreq, ctx->fallback_cipher);2588 aead_request_set_callback(subreq, aead_request_flags(req),2589 req->base.complete, req->base.data);2590 aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen,2591 req->iv);2592 aead_request_set_ad(subreq, req->assoclen);2593 2594 return is_encrypt ? crypto_aead_encrypt(req) :2595 crypto_aead_decrypt(req);2596}2597 2598static int aead_enqueue(struct aead_request *req, bool is_encrypt)2599{2600 struct iproc_reqctx_s *rctx = aead_request_ctx(req);2601 struct crypto_aead *aead = crypto_aead_reqtfm(req);2602 struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);2603 int err;2604 2605 flow_log("%s() enc:%u\n", __func__, is_encrypt);2606 2607 if (req->assoclen > MAX_ASSOC_SIZE) {2608 pr_err2609 ("%s() Error: associated data too long. (%u > %u bytes)\n",2610 __func__, req->assoclen, MAX_ASSOC_SIZE);2611 return -EINVAL;2612 }2613 2614 rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |2615 CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;2616 rctx->parent = &req->base;2617 rctx->is_encrypt = is_encrypt;2618 rctx->bd_suppress = false;2619 rctx->total_todo = req->cryptlen;2620 rctx->src_sent = 0;2621 rctx->total_sent = 0;2622 rctx->total_received = 0;2623 rctx->is_sw_hmac = false;2624 rctx->ctx = ctx;2625 memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));2626 2627 /* assoc data is at start of src sg */2628 rctx->assoc = req->src;2629 2630 /*2631 * Init current position in src scatterlist to be after assoc data.2632 * src_skip set to buffer offset where data begins. (Assoc data could2633 * end in the middle of a buffer.)2634 */2635 if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg,2636 &rctx->src_skip) < 0) {2637 pr_err("%s() Error: Unable to find start of src data\n",2638 __func__);2639 return -EINVAL;2640 }2641 2642 rctx->src_nents = 0;2643 rctx->dst_nents = 0;2644 if (req->dst == req->src) {2645 rctx->dst_sg = rctx->src_sg;2646 rctx->dst_skip = rctx->src_skip;2647 } else {2648 /*2649 * Expect req->dst to have room for assoc data followed by2650 * output data and ICV, if encrypt. So initialize dst_sg2651 * to point beyond assoc len offset.2652 */2653 if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg,2654 &rctx->dst_skip) < 0) {2655 pr_err("%s() Error: Unable to find start of dst data\n",2656 __func__);2657 return -EINVAL;2658 }2659 }2660 2661 if (ctx->cipher.mode == CIPHER_MODE_CBC ||2662 ctx->cipher.mode == CIPHER_MODE_CTR ||2663 ctx->cipher.mode == CIPHER_MODE_OFB ||2664 ctx->cipher.mode == CIPHER_MODE_XTS ||2665 ctx->cipher.mode == CIPHER_MODE_GCM) {2666 rctx->iv_ctr_len =2667 ctx->salt_len +2668 crypto_aead_ivsize(crypto_aead_reqtfm(req));2669 } else if (ctx->cipher.mode == CIPHER_MODE_CCM) {2670 rctx->iv_ctr_len = CCM_AES_IV_SIZE;2671 } else {2672 rctx->iv_ctr_len = 0;2673 }2674 2675 rctx->hash_carry_len = 0;2676 2677 flow_log(" src sg: %p\n", req->src);2678 flow_log(" rctx->src_sg: %p, src_skip %u\n",2679 rctx->src_sg, rctx->src_skip);2680 flow_log(" assoc: %p, assoclen %u\n", rctx->assoc, req->assoclen);2681 flow_log(" dst sg: %p\n", req->dst);2682 flow_log(" rctx->dst_sg: %p, dst_skip %u\n",2683 rctx->dst_sg, rctx->dst_skip);2684 flow_log(" iv_ctr_len:%u\n", rctx->iv_ctr_len);2685 flow_dump(" iv: ", req->iv, rctx->iv_ctr_len);2686 flow_log(" authkeylen:%u\n", ctx->authkeylen);2687 flow_log(" is_esp: %s\n", ctx->is_esp ? "yes" : "no");2688 2689 if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)2690 flow_log(" max_payload infinite");2691 else2692 flow_log(" max_payload: %u\n", ctx->max_payload);2693 2694 if (unlikely(aead_need_fallback(req)))2695 return aead_do_fallback(req, is_encrypt);2696 2697 /*2698 * Do memory allocations for request after fallback check, because if we2699 * do fallback, we won't call finish_req() to dealloc.2700 */2701 if (rctx->iv_ctr_len) {2702 if (ctx->salt_len)2703 memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset,2704 ctx->salt, ctx->salt_len);2705 memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len,2706 req->iv,2707 rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset);2708 }2709 2710 rctx->chan_idx = select_channel();2711 err = handle_aead_req(rctx);2712 if (err != -EINPROGRESS)2713 /* synchronous result */2714 spu_chunk_cleanup(rctx);2715 2716 return err;2717}2718 2719static int aead_authenc_setkey(struct crypto_aead *cipher,2720 const u8 *key, unsigned int keylen)2721{2722 struct spu_hw *spu = &iproc_priv.spu;2723 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2724 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);2725 struct crypto_authenc_keys keys;2726 int ret;2727 2728 flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key,2729 keylen);2730 flow_dump(" key: ", key, keylen);2731 2732 ret = crypto_authenc_extractkeys(&keys, key, keylen);2733 if (ret)2734 goto badkey;2735 2736 if (keys.enckeylen > MAX_KEY_SIZE ||2737 keys.authkeylen > MAX_KEY_SIZE)2738 goto badkey;2739 2740 ctx->enckeylen = keys.enckeylen;2741 ctx->authkeylen = keys.authkeylen;2742 2743 memcpy(ctx->enckey, keys.enckey, keys.enckeylen);2744 /* May end up padding auth key. So make sure it's zeroed. */2745 memset(ctx->authkey, 0, sizeof(ctx->authkey));2746 memcpy(ctx->authkey, keys.authkey, keys.authkeylen);2747 2748 switch (ctx->alg->cipher_info.alg) {2749 case CIPHER_ALG_DES:2750 if (verify_aead_des_key(cipher, keys.enckey, keys.enckeylen))2751 return -EINVAL;2752 2753 ctx->cipher_type = CIPHER_TYPE_DES;2754 break;2755 case CIPHER_ALG_3DES:2756 if (verify_aead_des3_key(cipher, keys.enckey, keys.enckeylen))2757 return -EINVAL;2758 2759 ctx->cipher_type = CIPHER_TYPE_3DES;2760 break;2761 case CIPHER_ALG_AES:2762 switch (ctx->enckeylen) {2763 case AES_KEYSIZE_128:2764 ctx->cipher_type = CIPHER_TYPE_AES128;2765 break;2766 case AES_KEYSIZE_192:2767 ctx->cipher_type = CIPHER_TYPE_AES192;2768 break;2769 case AES_KEYSIZE_256:2770 ctx->cipher_type = CIPHER_TYPE_AES256;2771 break;2772 default:2773 goto badkey;2774 }2775 break;2776 default:2777 pr_err("%s() Error: Unknown cipher alg\n", __func__);2778 return -EINVAL;2779 }2780 2781 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,2782 ctx->authkeylen);2783 flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);2784 flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);2785 2786 /* setkey the fallback just in case we needto use it */2787 if (ctx->fallback_cipher) {2788 flow_log(" running fallback setkey()\n");2789 2790 ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;2791 ctx->fallback_cipher->base.crt_flags |=2792 tfm->crt_flags & CRYPTO_TFM_REQ_MASK;2793 ret = crypto_aead_setkey(ctx->fallback_cipher, key, keylen);2794 if (ret)2795 flow_log(" fallback setkey() returned:%d\n", ret);2796 }2797 2798 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,2799 ctx->enckeylen,2800 false);2801 2802 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);2803 2804 return ret;2805 2806badkey:2807 ctx->enckeylen = 0;2808 ctx->authkeylen = 0;2809 ctx->digestsize = 0;2810 2811 return -EINVAL;2812}2813 2814static int aead_gcm_ccm_setkey(struct crypto_aead *cipher,2815 const u8 *key, unsigned int keylen)2816{2817 struct spu_hw *spu = &iproc_priv.spu;2818 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2819 struct crypto_tfm *tfm = crypto_aead_tfm(cipher);2820 2821 int ret = 0;2822 2823 flow_log("%s() keylen:%u\n", __func__, keylen);2824 flow_dump(" key: ", key, keylen);2825 2826 if (!ctx->is_esp)2827 ctx->digestsize = keylen;2828 2829 ctx->enckeylen = keylen;2830 ctx->authkeylen = 0;2831 2832 switch (ctx->enckeylen) {2833 case AES_KEYSIZE_128:2834 ctx->cipher_type = CIPHER_TYPE_AES128;2835 break;2836 case AES_KEYSIZE_192:2837 ctx->cipher_type = CIPHER_TYPE_AES192;2838 break;2839 case AES_KEYSIZE_256:2840 ctx->cipher_type = CIPHER_TYPE_AES256;2841 break;2842 default:2843 goto badkey;2844 }2845 2846 memcpy(ctx->enckey, key, ctx->enckeylen);2847 2848 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,2849 ctx->authkeylen);2850 flow_dump(" enc: ", ctx->enckey, ctx->enckeylen);2851 flow_dump(" auth: ", ctx->authkey, ctx->authkeylen);2852 2853 /* setkey the fallback just in case we need to use it */2854 if (ctx->fallback_cipher) {2855 flow_log(" running fallback setkey()\n");2856 2857 ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;2858 ctx->fallback_cipher->base.crt_flags |=2859 tfm->crt_flags & CRYPTO_TFM_REQ_MASK;2860 ret = crypto_aead_setkey(ctx->fallback_cipher, key,2861 keylen + ctx->salt_len);2862 if (ret)2863 flow_log(" fallback setkey() returned:%d\n", ret);2864 }2865 2866 ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,2867 ctx->enckeylen,2868 false);2869 2870 atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);2871 2872 flow_log(" enckeylen:%u authkeylen:%u\n", ctx->enckeylen,2873 ctx->authkeylen);2874 2875 return ret;2876 2877badkey:2878 ctx->enckeylen = 0;2879 ctx->authkeylen = 0;2880 ctx->digestsize = 0;2881 2882 return -EINVAL;2883}2884 2885/**2886 * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES.2887 * @cipher: AEAD structure2888 * @key: Key followed by 4 bytes of salt2889 * @keylen: Length of key plus salt, in bytes2890 *2891 * Extracts salt from key and stores it to be prepended to IV on each request.2892 * Digest is always 16 bytes2893 *2894 * Return: Value from generic gcm setkey.2895 */2896static int aead_gcm_esp_setkey(struct crypto_aead *cipher,2897 const u8 *key, unsigned int keylen)2898{2899 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2900 2901 flow_log("%s\n", __func__);2902 2903 if (keylen < GCM_ESP_SALT_SIZE)2904 return -EINVAL;2905 2906 ctx->salt_len = GCM_ESP_SALT_SIZE;2907 ctx->salt_offset = GCM_ESP_SALT_OFFSET;2908 memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);2909 keylen -= GCM_ESP_SALT_SIZE;2910 ctx->digestsize = GCM_ESP_DIGESTSIZE;2911 ctx->is_esp = true;2912 flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);2913 2914 return aead_gcm_ccm_setkey(cipher, key, keylen);2915}2916 2917/**2918 * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC.2919 * @cipher: AEAD structure2920 * @key: Key followed by 4 bytes of salt2921 * @keylen: Length of key plus salt, in bytes2922 *2923 * Extracts salt from key and stores it to be prepended to IV on each request.2924 * Digest is always 16 bytes2925 *2926 * Return: Value from generic gcm setkey.2927 */2928static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher,2929 const u8 *key, unsigned int keylen)2930{2931 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2932 2933 flow_log("%s\n", __func__);2934 2935 if (keylen < GCM_ESP_SALT_SIZE)2936 return -EINVAL;2937 2938 ctx->salt_len = GCM_ESP_SALT_SIZE;2939 ctx->salt_offset = GCM_ESP_SALT_OFFSET;2940 memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);2941 keylen -= GCM_ESP_SALT_SIZE;2942 ctx->digestsize = GCM_ESP_DIGESTSIZE;2943 ctx->is_esp = true;2944 ctx->is_rfc4543 = true;2945 flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);2946 2947 return aead_gcm_ccm_setkey(cipher, key, keylen);2948}2949 2950/**2951 * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES.2952 * @cipher: AEAD structure2953 * @key: Key followed by 4 bytes of salt2954 * @keylen: Length of key plus salt, in bytes2955 *2956 * Extracts salt from key and stores it to be prepended to IV on each request.2957 * Digest is always 16 bytes2958 *2959 * Return: Value from generic ccm setkey.2960 */2961static int aead_ccm_esp_setkey(struct crypto_aead *cipher,2962 const u8 *key, unsigned int keylen)2963{2964 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2965 2966 flow_log("%s\n", __func__);2967 2968 if (keylen < CCM_ESP_SALT_SIZE)2969 return -EINVAL;2970 2971 ctx->salt_len = CCM_ESP_SALT_SIZE;2972 ctx->salt_offset = CCM_ESP_SALT_OFFSET;2973 memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE);2974 keylen -= CCM_ESP_SALT_SIZE;2975 ctx->is_esp = true;2976 flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE);2977 2978 return aead_gcm_ccm_setkey(cipher, key, keylen);2979}2980 2981static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize)2982{2983 struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);2984 int ret = 0;2985 2986 flow_log("%s() authkeylen:%u authsize:%u\n",2987 __func__, ctx->authkeylen, authsize);2988 2989 ctx->digestsize = authsize;2990 2991 /* setkey the fallback just in case we needto use it */2992 if (ctx->fallback_cipher) {2993 flow_log(" running fallback setauth()\n");2994 2995 ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize);2996 if (ret)2997 flow_log(" fallback setauth() returned:%d\n", ret);2998 }2999 3000 return ret;3001}3002 3003static int aead_encrypt(struct aead_request *req)3004{3005 flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen,3006 req->cryptlen);3007 dump_sg(req->src, 0, req->cryptlen + req->assoclen);3008 flow_log(" assoc_len:%u\n", req->assoclen);3009 3010 return aead_enqueue(req, true);3011}3012 3013static int aead_decrypt(struct aead_request *req)3014{3015 flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen);3016 dump_sg(req->src, 0, req->cryptlen + req->assoclen);3017 flow_log(" assoc_len:%u\n", req->assoclen);3018 3019 return aead_enqueue(req, false);3020}3021 3022/* ==================== Supported Cipher Algorithms ==================== */3023 3024static struct iproc_alg_s driver_algs[] = {3025 {3026 .type = CRYPTO_ALG_TYPE_AEAD,3027 .alg.aead = {3028 .base = {3029 .cra_name = "gcm(aes)",3030 .cra_driver_name = "gcm-aes-iproc",3031 .cra_blocksize = AES_BLOCK_SIZE,3032 .cra_flags = CRYPTO_ALG_NEED_FALLBACK3033 },3034 .setkey = aead_gcm_ccm_setkey,3035 .ivsize = GCM_AES_IV_SIZE,3036 .maxauthsize = AES_BLOCK_SIZE,3037 },3038 .cipher_info = {3039 .alg = CIPHER_ALG_AES,3040 .mode = CIPHER_MODE_GCM,3041 },3042 .auth_info = {3043 .alg = HASH_ALG_AES,3044 .mode = HASH_MODE_GCM,3045 },3046 .auth_first = 0,3047 },3048 {3049 .type = CRYPTO_ALG_TYPE_AEAD,3050 .alg.aead = {3051 .base = {3052 .cra_name = "ccm(aes)",3053 .cra_driver_name = "ccm-aes-iproc",3054 .cra_blocksize = AES_BLOCK_SIZE,3055 .cra_flags = CRYPTO_ALG_NEED_FALLBACK3056 },3057 .setkey = aead_gcm_ccm_setkey,3058 .ivsize = CCM_AES_IV_SIZE,3059 .maxauthsize = AES_BLOCK_SIZE,3060 },3061 .cipher_info = {3062 .alg = CIPHER_ALG_AES,3063 .mode = CIPHER_MODE_CCM,3064 },3065 .auth_info = {3066 .alg = HASH_ALG_AES,3067 .mode = HASH_MODE_CCM,3068 },3069 .auth_first = 0,3070 },3071 {3072 .type = CRYPTO_ALG_TYPE_AEAD,3073 .alg.aead = {3074 .base = {3075 .cra_name = "rfc4106(gcm(aes))",3076 .cra_driver_name = "gcm-aes-esp-iproc",3077 .cra_blocksize = AES_BLOCK_SIZE,3078 .cra_flags = CRYPTO_ALG_NEED_FALLBACK3079 },3080 .setkey = aead_gcm_esp_setkey,3081 .ivsize = GCM_RFC4106_IV_SIZE,3082 .maxauthsize = AES_BLOCK_SIZE,3083 },3084 .cipher_info = {3085 .alg = CIPHER_ALG_AES,3086 .mode = CIPHER_MODE_GCM,3087 },3088 .auth_info = {3089 .alg = HASH_ALG_AES,3090 .mode = HASH_MODE_GCM,3091 },3092 .auth_first = 0,3093 },3094 {3095 .type = CRYPTO_ALG_TYPE_AEAD,3096 .alg.aead = {3097 .base = {3098 .cra_name = "rfc4309(ccm(aes))",3099 .cra_driver_name = "ccm-aes-esp-iproc",3100 .cra_blocksize = AES_BLOCK_SIZE,3101 .cra_flags = CRYPTO_ALG_NEED_FALLBACK3102 },3103 .setkey = aead_ccm_esp_setkey,3104 .ivsize = CCM_AES_IV_SIZE,3105 .maxauthsize = AES_BLOCK_SIZE,3106 },3107 .cipher_info = {3108 .alg = CIPHER_ALG_AES,3109 .mode = CIPHER_MODE_CCM,3110 },3111 .auth_info = {3112 .alg = HASH_ALG_AES,3113 .mode = HASH_MODE_CCM,3114 },3115 .auth_first = 0,3116 },3117 {3118 .type = CRYPTO_ALG_TYPE_AEAD,3119 .alg.aead = {3120 .base = {3121 .cra_name = "rfc4543(gcm(aes))",3122 .cra_driver_name = "gmac-aes-esp-iproc",3123 .cra_blocksize = AES_BLOCK_SIZE,3124 .cra_flags = CRYPTO_ALG_NEED_FALLBACK3125 },3126 .setkey = rfc4543_gcm_esp_setkey,3127 .ivsize = GCM_RFC4106_IV_SIZE,3128 .maxauthsize = AES_BLOCK_SIZE,3129 },3130 .cipher_info = {3131 .alg = CIPHER_ALG_AES,3132 .mode = CIPHER_MODE_GCM,3133 },3134 .auth_info = {3135 .alg = HASH_ALG_AES,3136 .mode = HASH_MODE_GCM,3137 },3138 .auth_first = 0,3139 },3140 {3141 .type = CRYPTO_ALG_TYPE_AEAD,3142 .alg.aead = {3143 .base = {3144 .cra_name = "authenc(hmac(md5),cbc(aes))",3145 .cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc",3146 .cra_blocksize = AES_BLOCK_SIZE,3147 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3148 CRYPTO_ALG_ASYNC |3149 CRYPTO_ALG_ALLOCATES_MEMORY3150 },3151 .setkey = aead_authenc_setkey,3152 .ivsize = AES_BLOCK_SIZE,3153 .maxauthsize = MD5_DIGEST_SIZE,3154 },3155 .cipher_info = {3156 .alg = CIPHER_ALG_AES,3157 .mode = CIPHER_MODE_CBC,3158 },3159 .auth_info = {3160 .alg = HASH_ALG_MD5,3161 .mode = HASH_MODE_HMAC,3162 },3163 .auth_first = 0,3164 },3165 {3166 .type = CRYPTO_ALG_TYPE_AEAD,3167 .alg.aead = {3168 .base = {3169 .cra_name = "authenc(hmac(sha1),cbc(aes))",3170 .cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc",3171 .cra_blocksize = AES_BLOCK_SIZE,3172 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3173 CRYPTO_ALG_ASYNC |3174 CRYPTO_ALG_ALLOCATES_MEMORY3175 },3176 .setkey = aead_authenc_setkey,3177 .ivsize = AES_BLOCK_SIZE,3178 .maxauthsize = SHA1_DIGEST_SIZE,3179 },3180 .cipher_info = {3181 .alg = CIPHER_ALG_AES,3182 .mode = CIPHER_MODE_CBC,3183 },3184 .auth_info = {3185 .alg = HASH_ALG_SHA1,3186 .mode = HASH_MODE_HMAC,3187 },3188 .auth_first = 0,3189 },3190 {3191 .type = CRYPTO_ALG_TYPE_AEAD,3192 .alg.aead = {3193 .base = {3194 .cra_name = "authenc(hmac(sha256),cbc(aes))",3195 .cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc",3196 .cra_blocksize = AES_BLOCK_SIZE,3197 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3198 CRYPTO_ALG_ASYNC |3199 CRYPTO_ALG_ALLOCATES_MEMORY3200 },3201 .setkey = aead_authenc_setkey,3202 .ivsize = AES_BLOCK_SIZE,3203 .maxauthsize = SHA256_DIGEST_SIZE,3204 },3205 .cipher_info = {3206 .alg = CIPHER_ALG_AES,3207 .mode = CIPHER_MODE_CBC,3208 },3209 .auth_info = {3210 .alg = HASH_ALG_SHA256,3211 .mode = HASH_MODE_HMAC,3212 },3213 .auth_first = 0,3214 },3215 {3216 .type = CRYPTO_ALG_TYPE_AEAD,3217 .alg.aead = {3218 .base = {3219 .cra_name = "authenc(hmac(md5),cbc(des))",3220 .cra_driver_name = "authenc-hmac-md5-cbc-des-iproc",3221 .cra_blocksize = DES_BLOCK_SIZE,3222 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3223 CRYPTO_ALG_ASYNC |3224 CRYPTO_ALG_ALLOCATES_MEMORY3225 },3226 .setkey = aead_authenc_setkey,3227 .ivsize = DES_BLOCK_SIZE,3228 .maxauthsize = MD5_DIGEST_SIZE,3229 },3230 .cipher_info = {3231 .alg = CIPHER_ALG_DES,3232 .mode = CIPHER_MODE_CBC,3233 },3234 .auth_info = {3235 .alg = HASH_ALG_MD5,3236 .mode = HASH_MODE_HMAC,3237 },3238 .auth_first = 0,3239 },3240 {3241 .type = CRYPTO_ALG_TYPE_AEAD,3242 .alg.aead = {3243 .base = {3244 .cra_name = "authenc(hmac(sha1),cbc(des))",3245 .cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc",3246 .cra_blocksize = DES_BLOCK_SIZE,3247 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3248 CRYPTO_ALG_ASYNC |3249 CRYPTO_ALG_ALLOCATES_MEMORY3250 },3251 .setkey = aead_authenc_setkey,3252 .ivsize = DES_BLOCK_SIZE,3253 .maxauthsize = SHA1_DIGEST_SIZE,3254 },3255 .cipher_info = {3256 .alg = CIPHER_ALG_DES,3257 .mode = CIPHER_MODE_CBC,3258 },3259 .auth_info = {3260 .alg = HASH_ALG_SHA1,3261 .mode = HASH_MODE_HMAC,3262 },3263 .auth_first = 0,3264 },3265 {3266 .type = CRYPTO_ALG_TYPE_AEAD,3267 .alg.aead = {3268 .base = {3269 .cra_name = "authenc(hmac(sha224),cbc(des))",3270 .cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc",3271 .cra_blocksize = DES_BLOCK_SIZE,3272 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3273 CRYPTO_ALG_ASYNC |3274 CRYPTO_ALG_ALLOCATES_MEMORY3275 },3276 .setkey = aead_authenc_setkey,3277 .ivsize = DES_BLOCK_SIZE,3278 .maxauthsize = SHA224_DIGEST_SIZE,3279 },3280 .cipher_info = {3281 .alg = CIPHER_ALG_DES,3282 .mode = CIPHER_MODE_CBC,3283 },3284 .auth_info = {3285 .alg = HASH_ALG_SHA224,3286 .mode = HASH_MODE_HMAC,3287 },3288 .auth_first = 0,3289 },3290 {3291 .type = CRYPTO_ALG_TYPE_AEAD,3292 .alg.aead = {3293 .base = {3294 .cra_name = "authenc(hmac(sha256),cbc(des))",3295 .cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc",3296 .cra_blocksize = DES_BLOCK_SIZE,3297 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3298 CRYPTO_ALG_ASYNC |3299 CRYPTO_ALG_ALLOCATES_MEMORY3300 },3301 .setkey = aead_authenc_setkey,3302 .ivsize = DES_BLOCK_SIZE,3303 .maxauthsize = SHA256_DIGEST_SIZE,3304 },3305 .cipher_info = {3306 .alg = CIPHER_ALG_DES,3307 .mode = CIPHER_MODE_CBC,3308 },3309 .auth_info = {3310 .alg = HASH_ALG_SHA256,3311 .mode = HASH_MODE_HMAC,3312 },3313 .auth_first = 0,3314 },3315 {3316 .type = CRYPTO_ALG_TYPE_AEAD,3317 .alg.aead = {3318 .base = {3319 .cra_name = "authenc(hmac(sha384),cbc(des))",3320 .cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc",3321 .cra_blocksize = DES_BLOCK_SIZE,3322 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3323 CRYPTO_ALG_ASYNC |3324 CRYPTO_ALG_ALLOCATES_MEMORY3325 },3326 .setkey = aead_authenc_setkey,3327 .ivsize = DES_BLOCK_SIZE,3328 .maxauthsize = SHA384_DIGEST_SIZE,3329 },3330 .cipher_info = {3331 .alg = CIPHER_ALG_DES,3332 .mode = CIPHER_MODE_CBC,3333 },3334 .auth_info = {3335 .alg = HASH_ALG_SHA384,3336 .mode = HASH_MODE_HMAC,3337 },3338 .auth_first = 0,3339 },3340 {3341 .type = CRYPTO_ALG_TYPE_AEAD,3342 .alg.aead = {3343 .base = {3344 .cra_name = "authenc(hmac(sha512),cbc(des))",3345 .cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc",3346 .cra_blocksize = DES_BLOCK_SIZE,3347 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3348 CRYPTO_ALG_ASYNC |3349 CRYPTO_ALG_ALLOCATES_MEMORY3350 },3351 .setkey = aead_authenc_setkey,3352 .ivsize = DES_BLOCK_SIZE,3353 .maxauthsize = SHA512_DIGEST_SIZE,3354 },3355 .cipher_info = {3356 .alg = CIPHER_ALG_DES,3357 .mode = CIPHER_MODE_CBC,3358 },3359 .auth_info = {3360 .alg = HASH_ALG_SHA512,3361 .mode = HASH_MODE_HMAC,3362 },3363 .auth_first = 0,3364 },3365 {3366 .type = CRYPTO_ALG_TYPE_AEAD,3367 .alg.aead = {3368 .base = {3369 .cra_name = "authenc(hmac(md5),cbc(des3_ede))",3370 .cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc",3371 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3372 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3373 CRYPTO_ALG_ASYNC |3374 CRYPTO_ALG_ALLOCATES_MEMORY3375 },3376 .setkey = aead_authenc_setkey,3377 .ivsize = DES3_EDE_BLOCK_SIZE,3378 .maxauthsize = MD5_DIGEST_SIZE,3379 },3380 .cipher_info = {3381 .alg = CIPHER_ALG_3DES,3382 .mode = CIPHER_MODE_CBC,3383 },3384 .auth_info = {3385 .alg = HASH_ALG_MD5,3386 .mode = HASH_MODE_HMAC,3387 },3388 .auth_first = 0,3389 },3390 {3391 .type = CRYPTO_ALG_TYPE_AEAD,3392 .alg.aead = {3393 .base = {3394 .cra_name = "authenc(hmac(sha1),cbc(des3_ede))",3395 .cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc",3396 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3397 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3398 CRYPTO_ALG_ASYNC |3399 CRYPTO_ALG_ALLOCATES_MEMORY3400 },3401 .setkey = aead_authenc_setkey,3402 .ivsize = DES3_EDE_BLOCK_SIZE,3403 .maxauthsize = SHA1_DIGEST_SIZE,3404 },3405 .cipher_info = {3406 .alg = CIPHER_ALG_3DES,3407 .mode = CIPHER_MODE_CBC,3408 },3409 .auth_info = {3410 .alg = HASH_ALG_SHA1,3411 .mode = HASH_MODE_HMAC,3412 },3413 .auth_first = 0,3414 },3415 {3416 .type = CRYPTO_ALG_TYPE_AEAD,3417 .alg.aead = {3418 .base = {3419 .cra_name = "authenc(hmac(sha224),cbc(des3_ede))",3420 .cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc",3421 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3422 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3423 CRYPTO_ALG_ASYNC |3424 CRYPTO_ALG_ALLOCATES_MEMORY3425 },3426 .setkey = aead_authenc_setkey,3427 .ivsize = DES3_EDE_BLOCK_SIZE,3428 .maxauthsize = SHA224_DIGEST_SIZE,3429 },3430 .cipher_info = {3431 .alg = CIPHER_ALG_3DES,3432 .mode = CIPHER_MODE_CBC,3433 },3434 .auth_info = {3435 .alg = HASH_ALG_SHA224,3436 .mode = HASH_MODE_HMAC,3437 },3438 .auth_first = 0,3439 },3440 {3441 .type = CRYPTO_ALG_TYPE_AEAD,3442 .alg.aead = {3443 .base = {3444 .cra_name = "authenc(hmac(sha256),cbc(des3_ede))",3445 .cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc",3446 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3447 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3448 CRYPTO_ALG_ASYNC |3449 CRYPTO_ALG_ALLOCATES_MEMORY3450 },3451 .setkey = aead_authenc_setkey,3452 .ivsize = DES3_EDE_BLOCK_SIZE,3453 .maxauthsize = SHA256_DIGEST_SIZE,3454 },3455 .cipher_info = {3456 .alg = CIPHER_ALG_3DES,3457 .mode = CIPHER_MODE_CBC,3458 },3459 .auth_info = {3460 .alg = HASH_ALG_SHA256,3461 .mode = HASH_MODE_HMAC,3462 },3463 .auth_first = 0,3464 },3465 {3466 .type = CRYPTO_ALG_TYPE_AEAD,3467 .alg.aead = {3468 .base = {3469 .cra_name = "authenc(hmac(sha384),cbc(des3_ede))",3470 .cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc",3471 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3472 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3473 CRYPTO_ALG_ASYNC |3474 CRYPTO_ALG_ALLOCATES_MEMORY3475 },3476 .setkey = aead_authenc_setkey,3477 .ivsize = DES3_EDE_BLOCK_SIZE,3478 .maxauthsize = SHA384_DIGEST_SIZE,3479 },3480 .cipher_info = {3481 .alg = CIPHER_ALG_3DES,3482 .mode = CIPHER_MODE_CBC,3483 },3484 .auth_info = {3485 .alg = HASH_ALG_SHA384,3486 .mode = HASH_MODE_HMAC,3487 },3488 .auth_first = 0,3489 },3490 {3491 .type = CRYPTO_ALG_TYPE_AEAD,3492 .alg.aead = {3493 .base = {3494 .cra_name = "authenc(hmac(sha512),cbc(des3_ede))",3495 .cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc",3496 .cra_blocksize = DES3_EDE_BLOCK_SIZE,3497 .cra_flags = CRYPTO_ALG_NEED_FALLBACK |3498 CRYPTO_ALG_ASYNC |3499 CRYPTO_ALG_ALLOCATES_MEMORY3500 },3501 .setkey = aead_authenc_setkey,3502 .ivsize = DES3_EDE_BLOCK_SIZE,3503 .maxauthsize = SHA512_DIGEST_SIZE,3504 },3505 .cipher_info = {3506 .alg = CIPHER_ALG_3DES,3507 .mode = CIPHER_MODE_CBC,3508 },3509 .auth_info = {3510 .alg = HASH_ALG_SHA512,3511 .mode = HASH_MODE_HMAC,3512 },3513 .auth_first = 0,3514 },3515 3516/* SKCIPHER algorithms. */3517 {3518 .type = CRYPTO_ALG_TYPE_SKCIPHER,3519 .alg.skcipher = {3520 .base.cra_name = "cbc(des)",3521 .base.cra_driver_name = "cbc-des-iproc",3522 .base.cra_blocksize = DES_BLOCK_SIZE,3523 .min_keysize = DES_KEY_SIZE,3524 .max_keysize = DES_KEY_SIZE,3525 .ivsize = DES_BLOCK_SIZE,3526 },3527 .cipher_info = {3528 .alg = CIPHER_ALG_DES,3529 .mode = CIPHER_MODE_CBC,3530 },3531 .auth_info = {3532 .alg = HASH_ALG_NONE,3533 .mode = HASH_MODE_NONE,3534 },3535 },3536 {3537 .type = CRYPTO_ALG_TYPE_SKCIPHER,3538 .alg.skcipher = {3539 .base.cra_name = "ecb(des)",3540 .base.cra_driver_name = "ecb-des-iproc",3541 .base.cra_blocksize = DES_BLOCK_SIZE,3542 .min_keysize = DES_KEY_SIZE,3543 .max_keysize = DES_KEY_SIZE,3544 .ivsize = 0,3545 },3546 .cipher_info = {3547 .alg = CIPHER_ALG_DES,3548 .mode = CIPHER_MODE_ECB,3549 },3550 .auth_info = {3551 .alg = HASH_ALG_NONE,3552 .mode = HASH_MODE_NONE,3553 },3554 },3555 {3556 .type = CRYPTO_ALG_TYPE_SKCIPHER,3557 .alg.skcipher = {3558 .base.cra_name = "cbc(des3_ede)",3559 .base.cra_driver_name = "cbc-des3-iproc",3560 .base.cra_blocksize = DES3_EDE_BLOCK_SIZE,3561 .min_keysize = DES3_EDE_KEY_SIZE,3562 .max_keysize = DES3_EDE_KEY_SIZE,3563 .ivsize = DES3_EDE_BLOCK_SIZE,3564 },3565 .cipher_info = {3566 .alg = CIPHER_ALG_3DES,3567 .mode = CIPHER_MODE_CBC,3568 },3569 .auth_info = {3570 .alg = HASH_ALG_NONE,3571 .mode = HASH_MODE_NONE,3572 },3573 },3574 {3575 .type = CRYPTO_ALG_TYPE_SKCIPHER,3576 .alg.skcipher = {3577 .base.cra_name = "ecb(des3_ede)",3578 .base.cra_driver_name = "ecb-des3-iproc",3579 .base.cra_blocksize = DES3_EDE_BLOCK_SIZE,3580 .min_keysize = DES3_EDE_KEY_SIZE,3581 .max_keysize = DES3_EDE_KEY_SIZE,3582 .ivsize = 0,3583 },3584 .cipher_info = {3585 .alg = CIPHER_ALG_3DES,3586 .mode = CIPHER_MODE_ECB,3587 },3588 .auth_info = {3589 .alg = HASH_ALG_NONE,3590 .mode = HASH_MODE_NONE,3591 },3592 },3593 {3594 .type = CRYPTO_ALG_TYPE_SKCIPHER,3595 .alg.skcipher = {3596 .base.cra_name = "cbc(aes)",3597 .base.cra_driver_name = "cbc-aes-iproc",3598 .base.cra_blocksize = AES_BLOCK_SIZE,3599 .min_keysize = AES_MIN_KEY_SIZE,3600 .max_keysize = AES_MAX_KEY_SIZE,3601 .ivsize = AES_BLOCK_SIZE,3602 },3603 .cipher_info = {3604 .alg = CIPHER_ALG_AES,3605 .mode = CIPHER_MODE_CBC,3606 },3607 .auth_info = {3608 .alg = HASH_ALG_NONE,3609 .mode = HASH_MODE_NONE,3610 },3611 },3612 {3613 .type = CRYPTO_ALG_TYPE_SKCIPHER,3614 .alg.skcipher = {3615 .base.cra_name = "ecb(aes)",3616 .base.cra_driver_name = "ecb-aes-iproc",3617 .base.cra_blocksize = AES_BLOCK_SIZE,3618 .min_keysize = AES_MIN_KEY_SIZE,3619 .max_keysize = AES_MAX_KEY_SIZE,3620 .ivsize = 0,3621 },3622 .cipher_info = {3623 .alg = CIPHER_ALG_AES,3624 .mode = CIPHER_MODE_ECB,3625 },3626 .auth_info = {3627 .alg = HASH_ALG_NONE,3628 .mode = HASH_MODE_NONE,3629 },3630 },3631 {3632 .type = CRYPTO_ALG_TYPE_SKCIPHER,3633 .alg.skcipher = {3634 .base.cra_name = "ctr(aes)",3635 .base.cra_driver_name = "ctr-aes-iproc",3636 .base.cra_blocksize = AES_BLOCK_SIZE,3637 .min_keysize = AES_MIN_KEY_SIZE,3638 .max_keysize = AES_MAX_KEY_SIZE,3639 .ivsize = AES_BLOCK_SIZE,3640 },3641 .cipher_info = {3642 .alg = CIPHER_ALG_AES,3643 .mode = CIPHER_MODE_CTR,3644 },3645 .auth_info = {3646 .alg = HASH_ALG_NONE,3647 .mode = HASH_MODE_NONE,3648 },3649 },3650{3651 .type = CRYPTO_ALG_TYPE_SKCIPHER,3652 .alg.skcipher = {3653 .base.cra_name = "xts(aes)",3654 .base.cra_driver_name = "xts-aes-iproc",3655 .base.cra_blocksize = AES_BLOCK_SIZE,3656 .min_keysize = 2 * AES_MIN_KEY_SIZE,3657 .max_keysize = 2 * AES_MAX_KEY_SIZE,3658 .ivsize = AES_BLOCK_SIZE,3659 },3660 .cipher_info = {3661 .alg = CIPHER_ALG_AES,3662 .mode = CIPHER_MODE_XTS,3663 },3664 .auth_info = {3665 .alg = HASH_ALG_NONE,3666 .mode = HASH_MODE_NONE,3667 },3668 },3669 3670/* AHASH algorithms. */3671 {3672 .type = CRYPTO_ALG_TYPE_AHASH,3673 .alg.hash = {3674 .halg.digestsize = MD5_DIGEST_SIZE,3675 .halg.base = {3676 .cra_name = "md5",3677 .cra_driver_name = "md5-iproc",3678 .cra_blocksize = MD5_BLOCK_WORDS * 4,3679 .cra_flags = CRYPTO_ALG_ASYNC |3680 CRYPTO_ALG_ALLOCATES_MEMORY,3681 }3682 },3683 .cipher_info = {3684 .alg = CIPHER_ALG_NONE,3685 .mode = CIPHER_MODE_NONE,3686 },3687 .auth_info = {3688 .alg = HASH_ALG_MD5,3689 .mode = HASH_MODE_HASH,3690 },3691 },3692 {3693 .type = CRYPTO_ALG_TYPE_AHASH,3694 .alg.hash = {3695 .halg.digestsize = MD5_DIGEST_SIZE,3696 .halg.base = {3697 .cra_name = "hmac(md5)",3698 .cra_driver_name = "hmac-md5-iproc",3699 .cra_blocksize = MD5_BLOCK_WORDS * 4,3700 }3701 },3702 .cipher_info = {3703 .alg = CIPHER_ALG_NONE,3704 .mode = CIPHER_MODE_NONE,3705 },3706 .auth_info = {3707 .alg = HASH_ALG_MD5,3708 .mode = HASH_MODE_HMAC,3709 },3710 },3711 {.type = CRYPTO_ALG_TYPE_AHASH,3712 .alg.hash = {3713 .halg.digestsize = SHA1_DIGEST_SIZE,3714 .halg.base = {3715 .cra_name = "sha1",3716 .cra_driver_name = "sha1-iproc",3717 .cra_blocksize = SHA1_BLOCK_SIZE,3718 }3719 },3720 .cipher_info = {3721 .alg = CIPHER_ALG_NONE,3722 .mode = CIPHER_MODE_NONE,3723 },3724 .auth_info = {3725 .alg = HASH_ALG_SHA1,3726 .mode = HASH_MODE_HASH,3727 },3728 },3729 {.type = CRYPTO_ALG_TYPE_AHASH,3730 .alg.hash = {3731 .halg.digestsize = SHA1_DIGEST_SIZE,3732 .halg.base = {3733 .cra_name = "hmac(sha1)",3734 .cra_driver_name = "hmac-sha1-iproc",3735 .cra_blocksize = SHA1_BLOCK_SIZE,3736 }3737 },3738 .cipher_info = {3739 .alg = CIPHER_ALG_NONE,3740 .mode = CIPHER_MODE_NONE,3741 },3742 .auth_info = {3743 .alg = HASH_ALG_SHA1,3744 .mode = HASH_MODE_HMAC,3745 },3746 },3747 {.type = CRYPTO_ALG_TYPE_AHASH,3748 .alg.hash = {3749 .halg.digestsize = SHA224_DIGEST_SIZE,3750 .halg.base = {3751 .cra_name = "sha224",3752 .cra_driver_name = "sha224-iproc",3753 .cra_blocksize = SHA224_BLOCK_SIZE,3754 }3755 },3756 .cipher_info = {3757 .alg = CIPHER_ALG_NONE,3758 .mode = CIPHER_MODE_NONE,3759 },3760 .auth_info = {3761 .alg = HASH_ALG_SHA224,3762 .mode = HASH_MODE_HASH,3763 },3764 },3765 {.type = CRYPTO_ALG_TYPE_AHASH,3766 .alg.hash = {3767 .halg.digestsize = SHA224_DIGEST_SIZE,3768 .halg.base = {3769 .cra_name = "hmac(sha224)",3770 .cra_driver_name = "hmac-sha224-iproc",3771 .cra_blocksize = SHA224_BLOCK_SIZE,3772 }3773 },3774 .cipher_info = {3775 .alg = CIPHER_ALG_NONE,3776 .mode = CIPHER_MODE_NONE,3777 },3778 .auth_info = {3779 .alg = HASH_ALG_SHA224,3780 .mode = HASH_MODE_HMAC,3781 },3782 },3783 {.type = CRYPTO_ALG_TYPE_AHASH,3784 .alg.hash = {3785 .halg.digestsize = SHA256_DIGEST_SIZE,3786 .halg.base = {3787 .cra_name = "sha256",3788 .cra_driver_name = "sha256-iproc",3789 .cra_blocksize = SHA256_BLOCK_SIZE,3790 }3791 },3792 .cipher_info = {3793 .alg = CIPHER_ALG_NONE,3794 .mode = CIPHER_MODE_NONE,3795 },3796 .auth_info = {3797 .alg = HASH_ALG_SHA256,3798 .mode = HASH_MODE_HASH,3799 },3800 },3801 {.type = CRYPTO_ALG_TYPE_AHASH,3802 .alg.hash = {3803 .halg.digestsize = SHA256_DIGEST_SIZE,3804 .halg.base = {3805 .cra_name = "hmac(sha256)",3806 .cra_driver_name = "hmac-sha256-iproc",3807 .cra_blocksize = SHA256_BLOCK_SIZE,3808 }3809 },3810 .cipher_info = {3811 .alg = CIPHER_ALG_NONE,3812 .mode = CIPHER_MODE_NONE,3813 },3814 .auth_info = {3815 .alg = HASH_ALG_SHA256,3816 .mode = HASH_MODE_HMAC,3817 },3818 },3819 {3820 .type = CRYPTO_ALG_TYPE_AHASH,3821 .alg.hash = {3822 .halg.digestsize = SHA384_DIGEST_SIZE,3823 .halg.base = {3824 .cra_name = "sha384",3825 .cra_driver_name = "sha384-iproc",3826 .cra_blocksize = SHA384_BLOCK_SIZE,3827 }3828 },3829 .cipher_info = {3830 .alg = CIPHER_ALG_NONE,3831 .mode = CIPHER_MODE_NONE,3832 },3833 .auth_info = {3834 .alg = HASH_ALG_SHA384,3835 .mode = HASH_MODE_HASH,3836 },3837 },3838 {3839 .type = CRYPTO_ALG_TYPE_AHASH,3840 .alg.hash = {3841 .halg.digestsize = SHA384_DIGEST_SIZE,3842 .halg.base = {3843 .cra_name = "hmac(sha384)",3844 .cra_driver_name = "hmac-sha384-iproc",3845 .cra_blocksize = SHA384_BLOCK_SIZE,3846 }3847 },3848 .cipher_info = {3849 .alg = CIPHER_ALG_NONE,3850 .mode = CIPHER_MODE_NONE,3851 },3852 .auth_info = {3853 .alg = HASH_ALG_SHA384,3854 .mode = HASH_MODE_HMAC,3855 },3856 },3857 {3858 .type = CRYPTO_ALG_TYPE_AHASH,3859 .alg.hash = {3860 .halg.digestsize = SHA512_DIGEST_SIZE,3861 .halg.base = {3862 .cra_name = "sha512",3863 .cra_driver_name = "sha512-iproc",3864 .cra_blocksize = SHA512_BLOCK_SIZE,3865 }3866 },3867 .cipher_info = {3868 .alg = CIPHER_ALG_NONE,3869 .mode = CIPHER_MODE_NONE,3870 },3871 .auth_info = {3872 .alg = HASH_ALG_SHA512,3873 .mode = HASH_MODE_HASH,3874 },3875 },3876 {3877 .type = CRYPTO_ALG_TYPE_AHASH,3878 .alg.hash = {3879 .halg.digestsize = SHA512_DIGEST_SIZE,3880 .halg.base = {3881 .cra_name = "hmac(sha512)",3882 .cra_driver_name = "hmac-sha512-iproc",3883 .cra_blocksize = SHA512_BLOCK_SIZE,3884 }3885 },3886 .cipher_info = {3887 .alg = CIPHER_ALG_NONE,3888 .mode = CIPHER_MODE_NONE,3889 },3890 .auth_info = {3891 .alg = HASH_ALG_SHA512,3892 .mode = HASH_MODE_HMAC,3893 },3894 },3895 {3896 .type = CRYPTO_ALG_TYPE_AHASH,3897 .alg.hash = {3898 .halg.digestsize = SHA3_224_DIGEST_SIZE,3899 .halg.base = {3900 .cra_name = "sha3-224",3901 .cra_driver_name = "sha3-224-iproc",3902 .cra_blocksize = SHA3_224_BLOCK_SIZE,3903 }3904 },3905 .cipher_info = {3906 .alg = CIPHER_ALG_NONE,3907 .mode = CIPHER_MODE_NONE,3908 },3909 .auth_info = {3910 .alg = HASH_ALG_SHA3_224,3911 .mode = HASH_MODE_HASH,3912 },3913 },3914 {3915 .type = CRYPTO_ALG_TYPE_AHASH,3916 .alg.hash = {3917 .halg.digestsize = SHA3_224_DIGEST_SIZE,3918 .halg.base = {3919 .cra_name = "hmac(sha3-224)",3920 .cra_driver_name = "hmac-sha3-224-iproc",3921 .cra_blocksize = SHA3_224_BLOCK_SIZE,3922 }3923 },3924 .cipher_info = {3925 .alg = CIPHER_ALG_NONE,3926 .mode = CIPHER_MODE_NONE,3927 },3928 .auth_info = {3929 .alg = HASH_ALG_SHA3_224,3930 .mode = HASH_MODE_HMAC3931 },3932 },3933 {3934 .type = CRYPTO_ALG_TYPE_AHASH,3935 .alg.hash = {3936 .halg.digestsize = SHA3_256_DIGEST_SIZE,3937 .halg.base = {3938 .cra_name = "sha3-256",3939 .cra_driver_name = "sha3-256-iproc",3940 .cra_blocksize = SHA3_256_BLOCK_SIZE,3941 }3942 },3943 .cipher_info = {3944 .alg = CIPHER_ALG_NONE,3945 .mode = CIPHER_MODE_NONE,3946 },3947 .auth_info = {3948 .alg = HASH_ALG_SHA3_256,3949 .mode = HASH_MODE_HASH,3950 },3951 },3952 {3953 .type = CRYPTO_ALG_TYPE_AHASH,3954 .alg.hash = {3955 .halg.digestsize = SHA3_256_DIGEST_SIZE,3956 .halg.base = {3957 .cra_name = "hmac(sha3-256)",3958 .cra_driver_name = "hmac-sha3-256-iproc",3959 .cra_blocksize = SHA3_256_BLOCK_SIZE,3960 }3961 },3962 .cipher_info = {3963 .alg = CIPHER_ALG_NONE,3964 .mode = CIPHER_MODE_NONE,3965 },3966 .auth_info = {3967 .alg = HASH_ALG_SHA3_256,3968 .mode = HASH_MODE_HMAC,3969 },3970 },3971 {3972 .type = CRYPTO_ALG_TYPE_AHASH,3973 .alg.hash = {3974 .halg.digestsize = SHA3_384_DIGEST_SIZE,3975 .halg.base = {3976 .cra_name = "sha3-384",3977 .cra_driver_name = "sha3-384-iproc",3978 .cra_blocksize = SHA3_224_BLOCK_SIZE,3979 }3980 },3981 .cipher_info = {3982 .alg = CIPHER_ALG_NONE,3983 .mode = CIPHER_MODE_NONE,3984 },3985 .auth_info = {3986 .alg = HASH_ALG_SHA3_384,3987 .mode = HASH_MODE_HASH,3988 },3989 },3990 {3991 .type = CRYPTO_ALG_TYPE_AHASH,3992 .alg.hash = {3993 .halg.digestsize = SHA3_384_DIGEST_SIZE,3994 .halg.base = {3995 .cra_name = "hmac(sha3-384)",3996 .cra_driver_name = "hmac-sha3-384-iproc",3997 .cra_blocksize = SHA3_384_BLOCK_SIZE,3998 }3999 },4000 .cipher_info = {4001 .alg = CIPHER_ALG_NONE,4002 .mode = CIPHER_MODE_NONE,4003 },4004 .auth_info = {4005 .alg = HASH_ALG_SHA3_384,4006 .mode = HASH_MODE_HMAC,4007 },4008 },4009 {4010 .type = CRYPTO_ALG_TYPE_AHASH,4011 .alg.hash = {4012 .halg.digestsize = SHA3_512_DIGEST_SIZE,4013 .halg.base = {4014 .cra_name = "sha3-512",4015 .cra_driver_name = "sha3-512-iproc",4016 .cra_blocksize = SHA3_512_BLOCK_SIZE,4017 }4018 },4019 .cipher_info = {4020 .alg = CIPHER_ALG_NONE,4021 .mode = CIPHER_MODE_NONE,4022 },4023 .auth_info = {4024 .alg = HASH_ALG_SHA3_512,4025 .mode = HASH_MODE_HASH,4026 },4027 },4028 {4029 .type = CRYPTO_ALG_TYPE_AHASH,4030 .alg.hash = {4031 .halg.digestsize = SHA3_512_DIGEST_SIZE,4032 .halg.base = {4033 .cra_name = "hmac(sha3-512)",4034 .cra_driver_name = "hmac-sha3-512-iproc",4035 .cra_blocksize = SHA3_512_BLOCK_SIZE,4036 }4037 },4038 .cipher_info = {4039 .alg = CIPHER_ALG_NONE,4040 .mode = CIPHER_MODE_NONE,4041 },4042 .auth_info = {4043 .alg = HASH_ALG_SHA3_512,4044 .mode = HASH_MODE_HMAC,4045 },4046 },4047 {4048 .type = CRYPTO_ALG_TYPE_AHASH,4049 .alg.hash = {4050 .halg.digestsize = AES_BLOCK_SIZE,4051 .halg.base = {4052 .cra_name = "xcbc(aes)",4053 .cra_driver_name = "xcbc-aes-iproc",4054 .cra_blocksize = AES_BLOCK_SIZE,4055 }4056 },4057 .cipher_info = {4058 .alg = CIPHER_ALG_NONE,4059 .mode = CIPHER_MODE_NONE,4060 },4061 .auth_info = {4062 .alg = HASH_ALG_AES,4063 .mode = HASH_MODE_XCBC,4064 },4065 },4066 {4067 .type = CRYPTO_ALG_TYPE_AHASH,4068 .alg.hash = {4069 .halg.digestsize = AES_BLOCK_SIZE,4070 .halg.base = {4071 .cra_name = "cmac(aes)",4072 .cra_driver_name = "cmac-aes-iproc",4073 .cra_blocksize = AES_BLOCK_SIZE,4074 }4075 },4076 .cipher_info = {4077 .alg = CIPHER_ALG_NONE,4078 .mode = CIPHER_MODE_NONE,4079 },4080 .auth_info = {4081 .alg = HASH_ALG_AES,4082 .mode = HASH_MODE_CMAC,4083 },4084 },4085};4086 4087static int generic_cra_init(struct crypto_tfm *tfm,4088 struct iproc_alg_s *cipher_alg)4089{4090 struct spu_hw *spu = &iproc_priv.spu;4091 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);4092 unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);4093 4094 flow_log("%s()\n", __func__);4095 4096 ctx->alg = cipher_alg;4097 ctx->cipher = cipher_alg->cipher_info;4098 ctx->auth = cipher_alg->auth_info;4099 ctx->auth_first = cipher_alg->auth_first;4100 ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg,4101 ctx->cipher.mode,4102 blocksize);4103 ctx->fallback_cipher = NULL;4104 4105 ctx->enckeylen = 0;4106 ctx->authkeylen = 0;4107 4108 atomic_inc(&iproc_priv.stream_count);4109 atomic_inc(&iproc_priv.session_count);4110 4111 return 0;4112}4113 4114static int skcipher_init_tfm(struct crypto_skcipher *skcipher)4115{4116 struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);4117 struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);4118 struct iproc_alg_s *cipher_alg;4119 4120 flow_log("%s()\n", __func__);4121 4122 crypto_skcipher_set_reqsize(skcipher, sizeof(struct iproc_reqctx_s));4123 4124 cipher_alg = container_of(alg, struct iproc_alg_s, alg.skcipher);4125 return generic_cra_init(tfm, cipher_alg);4126}4127 4128static int ahash_cra_init(struct crypto_tfm *tfm)4129{4130 int err;4131 struct crypto_alg *alg = tfm->__crt_alg;4132 struct iproc_alg_s *cipher_alg;4133 4134 cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s,4135 alg.hash);4136 4137 err = generic_cra_init(tfm, cipher_alg);4138 flow_log("%s()\n", __func__);4139 4140 /*4141 * export state size has to be < 512 bytes. So don't include msg bufs4142 * in state size.4143 */4144 crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),4145 sizeof(struct iproc_reqctx_s));4146 4147 return err;4148}4149 4150static int aead_cra_init(struct crypto_aead *aead)4151{4152 unsigned int reqsize = sizeof(struct iproc_reqctx_s);4153 struct crypto_tfm *tfm = crypto_aead_tfm(aead);4154 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);4155 struct crypto_alg *alg = tfm->__crt_alg;4156 struct aead_alg *aalg = container_of(alg, struct aead_alg, base);4157 struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s,4158 alg.aead);4159 4160 int err = generic_cra_init(tfm, cipher_alg);4161 4162 flow_log("%s()\n", __func__);4163 4164 ctx->is_esp = false;4165 ctx->salt_len = 0;4166 ctx->salt_offset = 0;4167 4168 /* random first IV */4169 get_random_bytes(ctx->iv, MAX_IV_SIZE);4170 flow_dump(" iv: ", ctx->iv, MAX_IV_SIZE);4171 4172 if (err)4173 goto out;4174 4175 if (!(alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK))4176 goto reqsize;4177 4178 flow_log("%s() creating fallback cipher\n", __func__);4179 4180 ctx->fallback_cipher = crypto_alloc_aead(alg->cra_name, 0,4181 CRYPTO_ALG_ASYNC |4182 CRYPTO_ALG_NEED_FALLBACK);4183 if (IS_ERR(ctx->fallback_cipher)) {4184 pr_err("%s() Error: failed to allocate fallback for %s\n",4185 __func__, alg->cra_name);4186 return PTR_ERR(ctx->fallback_cipher);4187 }4188 4189 reqsize += crypto_aead_reqsize(ctx->fallback_cipher);4190 4191reqsize:4192 crypto_aead_set_reqsize(aead, reqsize);4193 4194out:4195 return err;4196}4197 4198static void generic_cra_exit(struct crypto_tfm *tfm)4199{4200 atomic_dec(&iproc_priv.session_count);4201}4202 4203static void skcipher_exit_tfm(struct crypto_skcipher *tfm)4204{4205 generic_cra_exit(crypto_skcipher_tfm(tfm));4206}4207 4208static void aead_cra_exit(struct crypto_aead *aead)4209{4210 struct crypto_tfm *tfm = crypto_aead_tfm(aead);4211 struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);4212 4213 generic_cra_exit(tfm);4214 4215 if (ctx->fallback_cipher) {4216 crypto_free_aead(ctx->fallback_cipher);4217 ctx->fallback_cipher = NULL;4218 }4219}4220 4221/**4222 * spu_functions_register() - Specify hardware-specific SPU functions based on4223 * SPU type read from device tree.4224 * @dev: device structure4225 * @spu_type: SPU hardware generation4226 * @spu_subtype: SPU hardware version4227 */4228static void spu_functions_register(struct device *dev,4229 enum spu_spu_type spu_type,4230 enum spu_spu_subtype spu_subtype)4231{4232 struct spu_hw *spu = &iproc_priv.spu;4233 4234 if (spu_type == SPU_TYPE_SPUM) {4235 dev_dbg(dev, "Registering SPUM functions");4236 spu->spu_dump_msg_hdr = spum_dump_msg_hdr;4237 spu->spu_payload_length = spum_payload_length;4238 spu->spu_response_hdr_len = spum_response_hdr_len;4239 spu->spu_hash_pad_len = spum_hash_pad_len;4240 spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len;4241 spu->spu_assoc_resp_len = spum_assoc_resp_len;4242 spu->spu_aead_ivlen = spum_aead_ivlen;4243 spu->spu_hash_type = spum_hash_type;4244 spu->spu_digest_size = spum_digest_size;4245 spu->spu_create_request = spum_create_request;4246 spu->spu_cipher_req_init = spum_cipher_req_init;4247 spu->spu_cipher_req_finish = spum_cipher_req_finish;4248 spu->spu_request_pad = spum_request_pad;4249 spu->spu_tx_status_len = spum_tx_status_len;4250 spu->spu_rx_status_len = spum_rx_status_len;4251 spu->spu_status_process = spum_status_process;4252 spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload;4253 spu->spu_ccm_update_iv = spum_ccm_update_iv;4254 spu->spu_wordalign_padlen = spum_wordalign_padlen;4255 if (spu_subtype == SPU_SUBTYPE_SPUM_NS2)4256 spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload;4257 else4258 spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload;4259 } else {4260 dev_dbg(dev, "Registering SPU2 functions");4261 spu->spu_dump_msg_hdr = spu2_dump_msg_hdr;4262 spu->spu_ctx_max_payload = spu2_ctx_max_payload;4263 spu->spu_payload_length = spu2_payload_length;4264 spu->spu_response_hdr_len = spu2_response_hdr_len;4265 spu->spu_hash_pad_len = spu2_hash_pad_len;4266 spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len;4267 spu->spu_assoc_resp_len = spu2_assoc_resp_len;4268 spu->spu_aead_ivlen = spu2_aead_ivlen;4269 spu->spu_hash_type = spu2_hash_type;4270 spu->spu_digest_size = spu2_digest_size;4271 spu->spu_create_request = spu2_create_request;4272 spu->spu_cipher_req_init = spu2_cipher_req_init;4273 spu->spu_cipher_req_finish = spu2_cipher_req_finish;4274 spu->spu_request_pad = spu2_request_pad;4275 spu->spu_tx_status_len = spu2_tx_status_len;4276 spu->spu_rx_status_len = spu2_rx_status_len;4277 spu->spu_status_process = spu2_status_process;4278 spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload;4279 spu->spu_ccm_update_iv = spu2_ccm_update_iv;4280 spu->spu_wordalign_padlen = spu2_wordalign_padlen;4281 }4282}4283 4284/**4285 * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox4286 * channel for the SPU being probed.4287 * @dev: SPU driver device structure4288 *4289 * Return: 0 if successful4290 * < 0 otherwise4291 */4292static int spu_mb_init(struct device *dev)4293{4294 struct mbox_client *mcl = &iproc_priv.mcl;4295 int err, i;4296 4297 iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan,4298 sizeof(struct mbox_chan *), GFP_KERNEL);4299 if (!iproc_priv.mbox)4300 return -ENOMEM;4301 4302 mcl->dev = dev;4303 mcl->tx_block = false;4304 mcl->tx_tout = 0;4305 mcl->knows_txdone = true;4306 mcl->rx_callback = spu_rx_callback;4307 mcl->tx_done = NULL;4308 4309 for (i = 0; i < iproc_priv.spu.num_chan; i++) {4310 iproc_priv.mbox[i] = mbox_request_channel(mcl, i);4311 if (IS_ERR(iproc_priv.mbox[i])) {4312 err = PTR_ERR(iproc_priv.mbox[i]);4313 dev_err(dev,4314 "Mbox channel %d request failed with err %d",4315 i, err);4316 iproc_priv.mbox[i] = NULL;4317 goto free_channels;4318 }4319 }4320 4321 return 0;4322free_channels:4323 for (i = 0; i < iproc_priv.spu.num_chan; i++) {4324 if (iproc_priv.mbox[i])4325 mbox_free_channel(iproc_priv.mbox[i]);4326 }4327 4328 return err;4329}4330 4331static void spu_mb_release(struct platform_device *pdev)4332{4333 int i;4334 4335 for (i = 0; i < iproc_priv.spu.num_chan; i++)4336 mbox_free_channel(iproc_priv.mbox[i]);4337}4338 4339static void spu_counters_init(void)4340{4341 int i;4342 int j;4343 4344 atomic_set(&iproc_priv.session_count, 0);4345 atomic_set(&iproc_priv.stream_count, 0);4346 atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan);4347 atomic64_set(&iproc_priv.bytes_in, 0);4348 atomic64_set(&iproc_priv.bytes_out, 0);4349 for (i = 0; i < SPU_OP_NUM; i++) {4350 atomic_set(&iproc_priv.op_counts[i], 0);4351 atomic_set(&iproc_priv.setkey_cnt[i], 0);4352 }4353 for (i = 0; i < CIPHER_ALG_LAST; i++)4354 for (j = 0; j < CIPHER_MODE_LAST; j++)4355 atomic_set(&iproc_priv.cipher_cnt[i][j], 0);4356 4357 for (i = 0; i < HASH_ALG_LAST; i++) {4358 atomic_set(&iproc_priv.hash_cnt[i], 0);4359 atomic_set(&iproc_priv.hmac_cnt[i], 0);4360 }4361 for (i = 0; i < AEAD_TYPE_LAST; i++)4362 atomic_set(&iproc_priv.aead_cnt[i], 0);4363 4364 atomic_set(&iproc_priv.mb_no_spc, 0);4365 atomic_set(&iproc_priv.mb_send_fail, 0);4366 atomic_set(&iproc_priv.bad_icv, 0);4367}4368 4369static int spu_register_skcipher(struct iproc_alg_s *driver_alg)4370{4371 struct skcipher_alg *crypto = &driver_alg->alg.skcipher;4372 int err;4373 4374 crypto->base.cra_module = THIS_MODULE;4375 crypto->base.cra_priority = cipher_pri;4376 crypto->base.cra_alignmask = 0;4377 crypto->base.cra_ctxsize = sizeof(struct iproc_ctx_s);4378 crypto->base.cra_flags = CRYPTO_ALG_ASYNC |4379 CRYPTO_ALG_ALLOCATES_MEMORY |4380 CRYPTO_ALG_KERN_DRIVER_ONLY;4381 4382 crypto->init = skcipher_init_tfm;4383 crypto->exit = skcipher_exit_tfm;4384 crypto->setkey = skcipher_setkey;4385 crypto->encrypt = skcipher_encrypt;4386 crypto->decrypt = skcipher_decrypt;4387 4388 err = crypto_register_skcipher(crypto);4389 /* Mark alg as having been registered, if successful */4390 if (err == 0)4391 driver_alg->registered = true;4392 pr_debug(" registered skcipher %s\n", crypto->base.cra_driver_name);4393 return err;4394}4395 4396static int spu_register_ahash(struct iproc_alg_s *driver_alg)4397{4398 struct spu_hw *spu = &iproc_priv.spu;4399 struct ahash_alg *hash = &driver_alg->alg.hash;4400 int err;4401 4402 /* AES-XCBC is the only AES hash type currently supported on SPU-M */4403 if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&4404 (driver_alg->auth_info.mode != HASH_MODE_XCBC) &&4405 (spu->spu_type == SPU_TYPE_SPUM))4406 return 0;4407 4408 /* SHA3 algorithm variants are not registered for SPU-M or SPU2. */4409 if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) &&4410 (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2))4411 return 0;4412 4413 hash->halg.base.cra_module = THIS_MODULE;4414 hash->halg.base.cra_priority = hash_pri;4415 hash->halg.base.cra_alignmask = 0;4416 hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s);4417 hash->halg.base.cra_init = ahash_cra_init;4418 hash->halg.base.cra_exit = generic_cra_exit;4419 hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC |4420 CRYPTO_ALG_ALLOCATES_MEMORY;4421 hash->halg.statesize = sizeof(struct spu_hash_export_s);4422 4423 if (driver_alg->auth_info.mode != HASH_MODE_HMAC) {4424 hash->init = ahash_init;4425 hash->update = ahash_update;4426 hash->final = ahash_final;4427 hash->finup = ahash_finup;4428 hash->digest = ahash_digest;4429 if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&4430 ((driver_alg->auth_info.mode == HASH_MODE_XCBC) ||4431 (driver_alg->auth_info.mode == HASH_MODE_CMAC))) {4432 hash->setkey = ahash_setkey;4433 }4434 } else {4435 hash->setkey = ahash_hmac_setkey;4436 hash->init = ahash_hmac_init;4437 hash->update = ahash_hmac_update;4438 hash->final = ahash_hmac_final;4439 hash->finup = ahash_hmac_finup;4440 hash->digest = ahash_hmac_digest;4441 }4442 hash->export = ahash_export;4443 hash->import = ahash_import;4444 4445 err = crypto_register_ahash(hash);4446 /* Mark alg as having been registered, if successful */4447 if (err == 0)4448 driver_alg->registered = true;4449 pr_debug(" registered ahash %s\n",4450 hash->halg.base.cra_driver_name);4451 return err;4452}4453 4454static int spu_register_aead(struct iproc_alg_s *driver_alg)4455{4456 struct aead_alg *aead = &driver_alg->alg.aead;4457 int err;4458 4459 aead->base.cra_module = THIS_MODULE;4460 aead->base.cra_priority = aead_pri;4461 aead->base.cra_alignmask = 0;4462 aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s);4463 4464 aead->base.cra_flags |= CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY;4465 /* setkey set in alg initialization */4466 aead->setauthsize = aead_setauthsize;4467 aead->encrypt = aead_encrypt;4468 aead->decrypt = aead_decrypt;4469 aead->init = aead_cra_init;4470 aead->exit = aead_cra_exit;4471 4472 err = crypto_register_aead(aead);4473 /* Mark alg as having been registered, if successful */4474 if (err == 0)4475 driver_alg->registered = true;4476 pr_debug(" registered aead %s\n", aead->base.cra_driver_name);4477 return err;4478}4479 4480/* register crypto algorithms the device supports */4481static int spu_algs_register(struct device *dev)4482{4483 int i, j;4484 int err;4485 4486 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {4487 switch (driver_algs[i].type) {4488 case CRYPTO_ALG_TYPE_SKCIPHER:4489 err = spu_register_skcipher(&driver_algs[i]);4490 break;4491 case CRYPTO_ALG_TYPE_AHASH:4492 err = spu_register_ahash(&driver_algs[i]);4493 break;4494 case CRYPTO_ALG_TYPE_AEAD:4495 err = spu_register_aead(&driver_algs[i]);4496 break;4497 default:4498 dev_err(dev,4499 "iproc-crypto: unknown alg type: %d",4500 driver_algs[i].type);4501 err = -EINVAL;4502 }4503 4504 if (err) {4505 dev_err(dev, "alg registration failed with error %d\n",4506 err);4507 goto err_algs;4508 }4509 }4510 4511 return 0;4512 4513err_algs:4514 for (j = 0; j < i; j++) {4515 /* Skip any algorithm not registered */4516 if (!driver_algs[j].registered)4517 continue;4518 switch (driver_algs[j].type) {4519 case CRYPTO_ALG_TYPE_SKCIPHER:4520 crypto_unregister_skcipher(&driver_algs[j].alg.skcipher);4521 driver_algs[j].registered = false;4522 break;4523 case CRYPTO_ALG_TYPE_AHASH:4524 crypto_unregister_ahash(&driver_algs[j].alg.hash);4525 driver_algs[j].registered = false;4526 break;4527 case CRYPTO_ALG_TYPE_AEAD:4528 crypto_unregister_aead(&driver_algs[j].alg.aead);4529 driver_algs[j].registered = false;4530 break;4531 }4532 }4533 return err;4534}4535 4536/* ==================== Kernel Platform API ==================== */4537 4538static struct spu_type_subtype spum_ns2_types = {4539 SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS24540};4541 4542static struct spu_type_subtype spum_nsp_types = {4543 SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP4544};4545 4546static struct spu_type_subtype spu2_types = {4547 SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V14548};4549 4550static struct spu_type_subtype spu2_v2_types = {4551 SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V24552};4553 4554static const struct of_device_id bcm_spu_dt_ids[] = {4555 {4556 .compatible = "brcm,spum-crypto",4557 .data = &spum_ns2_types,4558 },4559 {4560 .compatible = "brcm,spum-nsp-crypto",4561 .data = &spum_nsp_types,4562 },4563 {4564 .compatible = "brcm,spu2-crypto",4565 .data = &spu2_types,4566 },4567 {4568 .compatible = "brcm,spu2-v2-crypto",4569 .data = &spu2_v2_types,4570 },4571 { /* sentinel */ }4572};4573 4574MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids);4575 4576static int spu_dt_read(struct platform_device *pdev)4577{4578 struct device *dev = &pdev->dev;4579 struct spu_hw *spu = &iproc_priv.spu;4580 struct resource *spu_ctrl_regs;4581 const struct spu_type_subtype *matched_spu_type;4582 struct device_node *dn = pdev->dev.of_node;4583 int err, i;4584 4585 /* Count number of mailbox channels */4586 spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells");4587 4588 matched_spu_type = of_device_get_match_data(dev);4589 if (!matched_spu_type) {4590 dev_err(dev, "Failed to match device\n");4591 return -ENODEV;4592 }4593 4594 spu->spu_type = matched_spu_type->type;4595 spu->spu_subtype = matched_spu_type->subtype;4596 4597 for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs =4598 platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) {4599 4600 spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs);4601 if (IS_ERR(spu->reg_vbase[i])) {4602 err = PTR_ERR(spu->reg_vbase[i]);4603 dev_err(dev, "Failed to map registers: %d\n",4604 err);4605 spu->reg_vbase[i] = NULL;4606 return err;4607 }4608 }4609 spu->num_spu = i;4610 dev_dbg(dev, "Device has %d SPUs", spu->num_spu);4611 4612 return 0;4613}4614 4615static int bcm_spu_probe(struct platform_device *pdev)4616{4617 struct device *dev = &pdev->dev;4618 struct spu_hw *spu = &iproc_priv.spu;4619 int err;4620 4621 iproc_priv.pdev = pdev;4622 platform_set_drvdata(iproc_priv.pdev,4623 &iproc_priv);4624 4625 err = spu_dt_read(pdev);4626 if (err < 0)4627 goto failure;4628 4629 err = spu_mb_init(dev);4630 if (err < 0)4631 goto failure;4632 4633 if (spu->spu_type == SPU_TYPE_SPUM)4634 iproc_priv.bcm_hdr_len = 8;4635 else if (spu->spu_type == SPU_TYPE_SPU2)4636 iproc_priv.bcm_hdr_len = 0;4637 4638 spu_functions_register(dev, spu->spu_type, spu->spu_subtype);4639 4640 spu_counters_init();4641 4642 spu_setup_debugfs();4643 4644 err = spu_algs_register(dev);4645 if (err < 0)4646 goto fail_reg;4647 4648 return 0;4649 4650fail_reg:4651 spu_free_debugfs();4652failure:4653 spu_mb_release(pdev);4654 dev_err(dev, "%s failed with error %d.\n", __func__, err);4655 4656 return err;4657}4658 4659static void bcm_spu_remove(struct platform_device *pdev)4660{4661 int i;4662 struct device *dev = &pdev->dev;4663 char *cdn;4664 4665 for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {4666 /*4667 * Not all algorithms were registered, depending on whether4668 * hardware is SPU or SPU2. So here we make sure to skip4669 * those algorithms that were not previously registered.4670 */4671 if (!driver_algs[i].registered)4672 continue;4673 4674 switch (driver_algs[i].type) {4675 case CRYPTO_ALG_TYPE_SKCIPHER:4676 crypto_unregister_skcipher(&driver_algs[i].alg.skcipher);4677 dev_dbg(dev, " unregistered cipher %s\n",4678 driver_algs[i].alg.skcipher.base.cra_driver_name);4679 driver_algs[i].registered = false;4680 break;4681 case CRYPTO_ALG_TYPE_AHASH:4682 crypto_unregister_ahash(&driver_algs[i].alg.hash);4683 cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name;4684 dev_dbg(dev, " unregistered hash %s\n", cdn);4685 driver_algs[i].registered = false;4686 break;4687 case CRYPTO_ALG_TYPE_AEAD:4688 crypto_unregister_aead(&driver_algs[i].alg.aead);4689 dev_dbg(dev, " unregistered aead %s\n",4690 driver_algs[i].alg.aead.base.cra_driver_name);4691 driver_algs[i].registered = false;4692 break;4693 }4694 }4695 spu_free_debugfs();4696 spu_mb_release(pdev);4697}4698 4699/* ===== Kernel Module API ===== */4700 4701static struct platform_driver bcm_spu_pdriver = {4702 .driver = {4703 .name = "brcm-spu-crypto",4704 .of_match_table = of_match_ptr(bcm_spu_dt_ids),4705 },4706 .probe = bcm_spu_probe,4707 .remove_new = bcm_spu_remove,4708};4709module_platform_driver(bcm_spu_pdriver);4710 4711MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>");4712MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver");4713MODULE_LICENSE("GPL v2");4714