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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