Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 4801 insertions, 0 deletions

diff --git a/drivers/crypto/bcm/cipher.c b/drivers/crypto/bcm/cipher.c
new file mode 100644
index 000000000..c8c799428
--- /dev/null
+++ b/drivers/crypto/bcm/cipher.c
@@ -0,0 +1,4801 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2016 Broadcom
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/scatterlist.h>
+#include <linux/crypto.h>
+#include <linux/kthread.h>
+#include <linux/rtnetlink.h>
+#include <linux/sched.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/io.h>
+#include <linux/bitops.h>
+
+#include <crypto/algapi.h>
+#include <crypto/aead.h>
+#include <crypto/internal/aead.h>
+#include <crypto/aes.h>
+#include <crypto/internal/des.h>
+#include <crypto/hmac.h>
+#include <crypto/md5.h>
+#include <crypto/authenc.h>
+#include <crypto/skcipher.h>
+#include <crypto/hash.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/sha3.h>
+
+#include "util.h"
+#include "cipher.h"
+#include "spu.h"
+#include "spum.h"
+#include "spu2.h"
+
+/* ================= Device Structure ================== */
+
+struct bcm_device_private iproc_priv;
+
+/* ==================== Parameters ===================== */
+
+int flow_debug_logging;
+module_param(flow_debug_logging, int, 0644);
+MODULE_PARM_DESC(flow_debug_logging, "Enable Flow Debug Logging");
+
+int packet_debug_logging;
+module_param(packet_debug_logging, int, 0644);
+MODULE_PARM_DESC(packet_debug_logging, "Enable Packet Debug Logging");
+
+int debug_logging_sleep;
+module_param(debug_logging_sleep, int, 0644);
+MODULE_PARM_DESC(debug_logging_sleep, "Packet Debug Logging Sleep");
+
+/*
+ * The value of these module parameters is used to set the priority for each
+ * algo type when this driver registers algos with the kernel crypto API.
+ * To use a priority other than the default, set the priority in the insmod or
+ * modprobe. Changing the module priority after init time has no effect.
+ *
+ * The default priorities are chosen to be lower (less preferred) than ARMv8 CE
+ * algos, but more preferred than generic software algos.
+ */
+static int cipher_pri = 150;
+module_param(cipher_pri, int, 0644);
+MODULE_PARM_DESC(cipher_pri, "Priority for cipher algos");
+
+static int hash_pri = 100;
+module_param(hash_pri, int, 0644);
+MODULE_PARM_DESC(hash_pri, "Priority for hash algos");
+
+static int aead_pri = 150;
+module_param(aead_pri, int, 0644);
+MODULE_PARM_DESC(aead_pri, "Priority for AEAD algos");
+
+/* A type 3 BCM header, expected to precede the SPU header for SPU-M.
+ * Bits 3 and 4 in the first byte encode the channel number (the dma ringset).
+ * 0x60 - ring 0
+ * 0x68 - ring 1
+ * 0x70 - ring 2
+ * 0x78 - ring 3
+ */
+static char BCMHEADER[] = { 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x28 };
+/*
+ * Some SPU hw does not use BCM header on SPU messages. So BCM_HDR_LEN
+ * is set dynamically after reading SPU type from device tree.
+ */
+#define BCM_HDR_LEN  iproc_priv.bcm_hdr_len
+
+/* min and max time to sleep before retrying when mbox queue is full. usec */
+#define MBOX_SLEEP_MIN  800
+#define MBOX_SLEEP_MAX 1000
+
+/**
+ * select_channel() - Select a SPU channel to handle a crypto request. Selects
+ * channel in round robin order.
+ *
+ * Return:  channel index
+ */
+static u8 select_channel(void)
+{
+	u8 chan_idx = atomic_inc_return(&iproc_priv.next_chan);
+
+	return chan_idx % iproc_priv.spu.num_chan;
+}
+
+/**
+ * spu_skcipher_rx_sg_create() - Build up the scatterlist of buffers used to
+ * receive a SPU response message for an skcipher request. Includes buffers to
+ * catch SPU message headers and the response data.
+ * @mssg:	mailbox message containing the receive sg
+ * @rctx:	crypto request context
+ * @rx_frag_num: number of scatterlist elements required to hold the
+ *		SPU response message
+ * @chunksize:	Number of bytes of response data expected
+ * @stat_pad_len: Number of bytes required to pad the STAT field to
+ *		a 4-byte boundary
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Returns:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int
+spu_skcipher_rx_sg_create(struct brcm_message *mssg,
+			    struct iproc_reqctx_s *rctx,
+			    u8 rx_frag_num,
+			    unsigned int chunksize, u32 stat_pad_len)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 datalen;		/* Number of bytes of response data expected */
+
+	mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (!mssg->spu.dst)
+		return -ENOMEM;
+
+	sg = mssg->spu.dst;
+	sg_init_table(sg, rx_frag_num);
+	/* Space for SPU message header */
+	sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
+
+	/* If XTS tweak in payload, add buffer to receive encrypted tweak */
+	if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
+	    spu->spu_xts_tweak_in_payload())
+		sg_set_buf(sg++, rctx->msg_buf.c.supdt_tweak,
+			   SPU_XTS_TWEAK_SIZE);
+
+	/* Copy in each dst sg entry from request, up to chunksize */
+	datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
+				 rctx->dst_nents, chunksize);
+	if (datalen < chunksize) {
+		pr_err("%s(): failed to copy dst sg to mbox msg. chunksize %u, datalen %u",
+		       __func__, chunksize, datalen);
+		return -EFAULT;
+	}
+
+	if (stat_pad_len)
+		sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
+
+	memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
+	sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
+
+	return 0;
+}
+
+/**
+ * spu_skcipher_tx_sg_create() - Build up the scatterlist of buffers used to
+ * send a SPU request message for an skcipher request. Includes SPU message
+ * headers and the request data.
+ * @mssg:	mailbox message containing the transmit sg
+ * @rctx:	crypto request context
+ * @tx_frag_num: number of scatterlist elements required to construct the
+ *		SPU request message
+ * @chunksize:	Number of bytes of request data
+ * @pad_len:	Number of pad bytes
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Returns:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int
+spu_skcipher_tx_sg_create(struct brcm_message *mssg,
+			    struct iproc_reqctx_s *rctx,
+			    u8 tx_frag_num, unsigned int chunksize, u32 pad_len)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 datalen;		/* Number of bytes of response data expected */
+	u32 stat_len;
+
+	mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (unlikely(!mssg->spu.src))
+		return -ENOMEM;
+
+	sg = mssg->spu.src;
+	sg_init_table(sg, tx_frag_num);
+
+	sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
+		   BCM_HDR_LEN + ctx->spu_req_hdr_len);
+
+	/* if XTS tweak in payload, copy from IV (where crypto API puts it) */
+	if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
+	    spu->spu_xts_tweak_in_payload())
+		sg_set_buf(sg++, rctx->msg_buf.iv_ctr, SPU_XTS_TWEAK_SIZE);
+
+	/* Copy in each src sg entry from request, up to chunksize */
+	datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
+				 rctx->src_nents, chunksize);
+	if (unlikely(datalen < chunksize)) {
+		pr_err("%s(): failed to copy src sg to mbox msg",
+		       __func__);
+		return -EFAULT;
+	}
+
+	if (pad_len)
+		sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
+
+	stat_len = spu->spu_tx_status_len();
+	if (stat_len) {
+		memset(rctx->msg_buf.tx_stat, 0, stat_len);
+		sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
+	}
+	return 0;
+}
+
+static int mailbox_send_message(struct brcm_message *mssg, u32 flags,
+				u8 chan_idx)
+{
+	int err;
+	int retry_cnt = 0;
+	struct device *dev = &(iproc_priv.pdev->dev);
+
+	err = mbox_send_message(iproc_priv.mbox[chan_idx], mssg);
+	if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) {
+		while ((err == -ENOBUFS) && (retry_cnt < SPU_MB_RETRY_MAX)) {
+			/*
+			 * Mailbox queue is full. Since MAY_SLEEP is set, assume
+			 * not in atomic context and we can wait and try again.
+			 */
+			retry_cnt++;
+			usleep_range(MBOX_SLEEP_MIN, MBOX_SLEEP_MAX);
+			err = mbox_send_message(iproc_priv.mbox[chan_idx],
+						mssg);
+			atomic_inc(&iproc_priv.mb_no_spc);
+		}
+	}
+	if (err < 0) {
+		atomic_inc(&iproc_priv.mb_send_fail);
+		return err;
+	}
+
+	/* Check error returned by mailbox controller */
+	err = mssg->error;
+	if (unlikely(err < 0)) {
+		dev_err(dev, "message error %d", err);
+		/* Signal txdone for mailbox channel */
+	}
+
+	/* Signal txdone for mailbox channel */
+	mbox_client_txdone(iproc_priv.mbox[chan_idx], err);
+	return err;
+}
+
+/**
+ * handle_skcipher_req() - Submit as much of a block cipher request as fits in
+ * a single SPU request message, starting at the current position in the request
+ * data.
+ * @rctx:	Crypto request context
+ *
+ * This may be called on the crypto API thread, or, when a request is so large
+ * it must be broken into multiple SPU messages, on the thread used to invoke
+ * the response callback. When requests are broken into multiple SPU
+ * messages, we assume subsequent messages depend on previous results, and
+ * thus always wait for previous results before submitting the next message.
+ * Because requests are submitted in lock step like this, there is no need
+ * to synchronize access to request data structures.
+ *
+ * Return: -EINPROGRESS: request has been accepted and result will be returned
+ *			 asynchronously
+ *         Any other value indicates an error
+ */
+static int handle_skcipher_req(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct skcipher_request *req =
+	    container_of(areq, struct skcipher_request, base);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	struct spu_cipher_parms cipher_parms;
+	int err;
+	unsigned int chunksize;	/* Num bytes of request to submit */
+	int remaining;	/* Bytes of request still to process */
+	int chunk_start;	/* Beginning of data for current SPU msg */
+
+	/* IV or ctr value to use in this SPU msg */
+	u8 local_iv_ctr[MAX_IV_SIZE];
+	u32 stat_pad_len;	/* num bytes to align status field */
+	u32 pad_len;		/* total length of all padding */
+	struct brcm_message *mssg;	/* mailbox message */
+
+	/* number of entries in src and dst sg in mailbox message. */
+	u8 rx_frag_num = 2;	/* response header and STATUS */
+	u8 tx_frag_num = 1;	/* request header */
+
+	flow_log("%s\n", __func__);
+
+	cipher_parms.alg = ctx->cipher.alg;
+	cipher_parms.mode = ctx->cipher.mode;
+	cipher_parms.type = ctx->cipher_type;
+	cipher_parms.key_len = ctx->enckeylen;
+	cipher_parms.key_buf = ctx->enckey;
+	cipher_parms.iv_buf = local_iv_ctr;
+	cipher_parms.iv_len = rctx->iv_ctr_len;
+
+	mssg = &rctx->mb_mssg;
+	chunk_start = rctx->src_sent;
+	remaining = rctx->total_todo - chunk_start;
+
+	/* determine the chunk we are breaking off and update the indexes */
+	if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
+	    (remaining > ctx->max_payload))
+		chunksize = ctx->max_payload;
+	else
+		chunksize = remaining;
+
+	rctx->src_sent += chunksize;
+	rctx->total_sent = rctx->src_sent;
+
+	/* Count number of sg entries to be included in this request */
+	rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
+	rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
+
+	if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
+	    rctx->is_encrypt && chunk_start)
+		/*
+		 * Encrypting non-first first chunk. Copy last block of
+		 * previous result to IV for this chunk.
+		 */
+		sg_copy_part_to_buf(req->dst, rctx->msg_buf.iv_ctr,
+				    rctx->iv_ctr_len,
+				    chunk_start - rctx->iv_ctr_len);
+
+	if (rctx->iv_ctr_len) {
+		/* get our local copy of the iv */
+		__builtin_memcpy(local_iv_ctr, rctx->msg_buf.iv_ctr,
+				 rctx->iv_ctr_len);
+
+		/* generate the next IV if possible */
+		if ((ctx->cipher.mode == CIPHER_MODE_CBC) &&
+		    !rctx->is_encrypt) {
+			/*
+			 * CBC Decrypt: next IV is the last ciphertext block in
+			 * this chunk
+			 */
+			sg_copy_part_to_buf(req->src, rctx->msg_buf.iv_ctr,
+					    rctx->iv_ctr_len,
+					    rctx->src_sent - rctx->iv_ctr_len);
+		} else if (ctx->cipher.mode == CIPHER_MODE_CTR) {
+			/*
+			 * The SPU hardware increments the counter once for
+			 * each AES block of 16 bytes. So update the counter
+			 * for the next chunk, if there is one. Note that for
+			 * this chunk, the counter has already been copied to
+			 * local_iv_ctr. We can assume a block size of 16,
+			 * because we only support CTR mode for AES, not for
+			 * any other cipher alg.
+			 */
+			add_to_ctr(rctx->msg_buf.iv_ctr, chunksize >> 4);
+		}
+	}
+
+	if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
+		flow_log("max_payload infinite\n");
+	else
+		flow_log("max_payload %u\n", ctx->max_payload);
+
+	flow_log("sent:%u start:%u remains:%u size:%u\n",
+		 rctx->src_sent, chunk_start, remaining, chunksize);
+
+	/* Copy SPU header template created at setkey time */
+	memcpy(rctx->msg_buf.bcm_spu_req_hdr, ctx->bcm_spu_req_hdr,
+	       sizeof(rctx->msg_buf.bcm_spu_req_hdr));
+
+	spu->spu_cipher_req_finish(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
+				   ctx->spu_req_hdr_len, !(rctx->is_encrypt),
+				   &cipher_parms, chunksize);
+
+	atomic64_add(chunksize, &iproc_priv.bytes_out);
+
+	stat_pad_len = spu->spu_wordalign_padlen(chunksize);
+	if (stat_pad_len)
+		rx_frag_num++;
+	pad_len = stat_pad_len;
+	if (pad_len) {
+		tx_frag_num++;
+		spu->spu_request_pad(rctx->msg_buf.spu_req_pad, 0,
+				     0, ctx->auth.alg, ctx->auth.mode,
+				     rctx->total_sent, stat_pad_len);
+	}
+
+	spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
+			      ctx->spu_req_hdr_len);
+	packet_log("payload:\n");
+	dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
+	packet_dump("   pad: ", rctx->msg_buf.spu_req_pad, pad_len);
+
+	/*
+	 * Build mailbox message containing SPU request msg and rx buffers
+	 * to catch response message
+	 */
+	memset(mssg, 0, sizeof(*mssg));
+	mssg->type = BRCM_MESSAGE_SPU;
+	mssg->ctx = rctx;	/* Will be returned in response */
+
+	/* Create rx scatterlist to catch result */
+	rx_frag_num += rctx->dst_nents;
+
+	if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
+	    spu->spu_xts_tweak_in_payload())
+		rx_frag_num++;	/* extra sg to insert tweak */
+
+	err = spu_skcipher_rx_sg_create(mssg, rctx, rx_frag_num, chunksize,
+					  stat_pad_len);
+	if (err)
+		return err;
+
+	/* Create tx scatterlist containing SPU request message */
+	tx_frag_num += rctx->src_nents;
+	if (spu->spu_tx_status_len())
+		tx_frag_num++;
+
+	if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
+	    spu->spu_xts_tweak_in_payload())
+		tx_frag_num++;	/* extra sg to insert tweak */
+
+	err = spu_skcipher_tx_sg_create(mssg, rctx, tx_frag_num, chunksize,
+					  pad_len);
+	if (err)
+		return err;
+
+	err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
+	if (unlikely(err < 0))
+		return err;
+
+	return -EINPROGRESS;
+}
+
+/**
+ * handle_skcipher_resp() - Process a block cipher SPU response. Updates the
+ * total received count for the request and updates global stats.
+ * @rctx:	Crypto request context
+ */
+static void handle_skcipher_resp(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct skcipher_request *req = skcipher_request_cast(areq);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 payload_len;
+
+	/* See how much data was returned */
+	payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
+
+	/*
+	 * In XTS mode, the first SPU_XTS_TWEAK_SIZE bytes may be the
+	 * encrypted tweak ("i") value; we don't count those.
+	 */
+	if ((ctx->cipher.mode == CIPHER_MODE_XTS) &&
+	    spu->spu_xts_tweak_in_payload() &&
+	    (payload_len >= SPU_XTS_TWEAK_SIZE))
+		payload_len -= SPU_XTS_TWEAK_SIZE;
+
+	atomic64_add(payload_len, &iproc_priv.bytes_in);
+
+	flow_log("%s() offset: %u, bd_len: %u BD:\n",
+		 __func__, rctx->total_received, payload_len);
+
+	dump_sg(req->dst, rctx->total_received, payload_len);
+
+	rctx->total_received += payload_len;
+	if (rctx->total_received == rctx->total_todo) {
+		atomic_inc(&iproc_priv.op_counts[SPU_OP_CIPHER]);
+		atomic_inc(
+		   &iproc_priv.cipher_cnt[ctx->cipher.alg][ctx->cipher.mode]);
+	}
+}
+
+/**
+ * spu_ahash_rx_sg_create() - Build up the scatterlist of buffers used to
+ * receive a SPU response message for an ahash request.
+ * @mssg:	mailbox message containing the receive sg
+ * @rctx:	crypto request context
+ * @rx_frag_num: number of scatterlist elements required to hold the
+ *		SPU response message
+ * @digestsize: length of hash digest, in bytes
+ * @stat_pad_len: Number of bytes required to pad the STAT field to
+ *		a 4-byte boundary
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Return:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int
+spu_ahash_rx_sg_create(struct brcm_message *mssg,
+		       struct iproc_reqctx_s *rctx,
+		       u8 rx_frag_num, unsigned int digestsize,
+		       u32 stat_pad_len)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	struct iproc_ctx_s *ctx = rctx->ctx;
+
+	mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (!mssg->spu.dst)
+		return -ENOMEM;
+
+	sg = mssg->spu.dst;
+	sg_init_table(sg, rx_frag_num);
+	/* Space for SPU message header */
+	sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
+
+	/* Space for digest */
+	sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
+
+	if (stat_pad_len)
+		sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
+
+	memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
+	sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
+	return 0;
+}
+
+/**
+ * spu_ahash_tx_sg_create() -  Build up the scatterlist of buffers used to send
+ * a SPU request message for an ahash request. Includes SPU message headers and
+ * the request data.
+ * @mssg:	mailbox message containing the transmit sg
+ * @rctx:	crypto request context
+ * @tx_frag_num: number of scatterlist elements required to construct the
+ *		SPU request message
+ * @spu_hdr_len: length in bytes of SPU message header
+ * @hash_carry_len: Number of bytes of data carried over from previous req
+ * @new_data_len: Number of bytes of new request data
+ * @pad_len:	Number of pad bytes
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Return:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int
+spu_ahash_tx_sg_create(struct brcm_message *mssg,
+		       struct iproc_reqctx_s *rctx,
+		       u8 tx_frag_num,
+		       u32 spu_hdr_len,
+		       unsigned int hash_carry_len,
+		       unsigned int new_data_len, u32 pad_len)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	u32 datalen;		/* Number of bytes of response data expected */
+	u32 stat_len;
+
+	mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (!mssg->spu.src)
+		return -ENOMEM;
+
+	sg = mssg->spu.src;
+	sg_init_table(sg, tx_frag_num);
+
+	sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
+		   BCM_HDR_LEN + spu_hdr_len);
+
+	if (hash_carry_len)
+		sg_set_buf(sg++, rctx->hash_carry, hash_carry_len);
+
+	if (new_data_len) {
+		/* Copy in each src sg entry from request, up to chunksize */
+		datalen = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
+					 rctx->src_nents, new_data_len);
+		if (datalen < new_data_len) {
+			pr_err("%s(): failed to copy src sg to mbox msg",
+			       __func__);
+			return -EFAULT;
+		}
+	}
+
+	if (pad_len)
+		sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
+
+	stat_len = spu->spu_tx_status_len();
+	if (stat_len) {
+		memset(rctx->msg_buf.tx_stat, 0, stat_len);
+		sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
+	}
+
+	return 0;
+}
+
+/**
+ * handle_ahash_req() - Process an asynchronous hash request from the crypto
+ * API.
+ * @rctx:  Crypto request context
+ *
+ * Builds a SPU request message embedded in a mailbox message and submits the
+ * mailbox message on a selected mailbox channel. The SPU request message is
+ * constructed as a scatterlist, including entries from the crypto API's
+ * src scatterlist to avoid copying the data to be hashed. This function is
+ * called either on the thread from the crypto API, or, in the case that the
+ * crypto API request is too large to fit in a single SPU request message,
+ * on the thread that invokes the receive callback with a response message.
+ * Because some operations require the response from one chunk before the next
+ * chunk can be submitted, we always wait for the response for the previous
+ * chunk before submitting the next chunk. Because requests are submitted in
+ * lock step like this, there is no need to synchronize access to request data
+ * structures.
+ *
+ * Return:
+ *   -EINPROGRESS: request has been submitted to SPU and response will be
+ *		   returned asynchronously
+ *   -EAGAIN:      non-final request included a small amount of data, which for
+ *		   efficiency we did not submit to the SPU, but instead stored
+ *		   to be submitted to the SPU with the next part of the request
+ *   other:        an error code
+ */
+static int handle_ahash_req(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct ahash_request *req = ahash_request_cast(areq);
+	struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+	struct crypto_tfm *tfm = crypto_ahash_tfm(ahash);
+	unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+
+	/* number of bytes still to be hashed in this req */
+	unsigned int nbytes_to_hash = 0;
+	int err;
+	unsigned int chunksize = 0;	/* length of hash carry + new data */
+	/*
+	 * length of new data, not from hash carry, to be submitted in
+	 * this hw request
+	 */
+	unsigned int new_data_len;
+
+	unsigned int __maybe_unused chunk_start = 0;
+	u32 db_size;	 /* Length of data field, incl gcm and hash padding */
+	int pad_len = 0; /* total pad len, including gcm, hash, stat padding */
+	u32 data_pad_len = 0;	/* length of GCM/CCM padding */
+	u32 stat_pad_len = 0;	/* length of padding to align STATUS word */
+	struct brcm_message *mssg;	/* mailbox message */
+	struct spu_request_opts req_opts;
+	struct spu_cipher_parms cipher_parms;
+	struct spu_hash_parms hash_parms;
+	struct spu_aead_parms aead_parms;
+	unsigned int local_nbuf;
+	u32 spu_hdr_len;
+	unsigned int digestsize;
+	u16 rem = 0;
+
+	/*
+	 * number of entries in src and dst sg. Always includes SPU msg header.
+	 * rx always includes a buffer to catch digest and STATUS.
+	 */
+	u8 rx_frag_num = 3;
+	u8 tx_frag_num = 1;
+
+	flow_log("total_todo %u, total_sent %u\n",
+		 rctx->total_todo, rctx->total_sent);
+
+	memset(&req_opts, 0, sizeof(req_opts));
+	memset(&cipher_parms, 0, sizeof(cipher_parms));
+	memset(&hash_parms, 0, sizeof(hash_parms));
+	memset(&aead_parms, 0, sizeof(aead_parms));
+
+	req_opts.bd_suppress = true;
+	hash_parms.alg = ctx->auth.alg;
+	hash_parms.mode = ctx->auth.mode;
+	hash_parms.type = HASH_TYPE_NONE;
+	hash_parms.key_buf = (u8 *)ctx->authkey;
+	hash_parms.key_len = ctx->authkeylen;
+
+	/*
+	 * For hash algorithms below assignment looks bit odd but
+	 * it's needed for AES-XCBC and AES-CMAC hash algorithms
+	 * to differentiate between 128, 192, 256 bit key values.
+	 * Based on the key values, hash algorithm is selected.
+	 * For example for 128 bit key, hash algorithm is AES-128.
+	 */
+	cipher_parms.type = ctx->cipher_type;
+
+	mssg = &rctx->mb_mssg;
+	chunk_start = rctx->src_sent;
+
+	/*
+	 * Compute the amount remaining to hash. This may include data
+	 * carried over from previous requests.
+	 */
+	nbytes_to_hash = rctx->total_todo - rctx->total_sent;
+	chunksize = nbytes_to_hash;
+	if ((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
+	    (chunksize > ctx->max_payload))
+		chunksize = ctx->max_payload;
+
+	/*
+	 * If this is not a final request and the request data is not a multiple
+	 * of a full block, then simply park the extra data and prefix it to the
+	 * data for the next request.
+	 */
+	if (!rctx->is_final) {
+		u8 *dest = rctx->hash_carry + rctx->hash_carry_len;
+		u16 new_len;  /* len of data to add to hash carry */
+
+		rem = chunksize % blocksize;   /* remainder */
+		if (rem) {
+			/* chunksize not a multiple of blocksize */
+			chunksize -= rem;
+			if (chunksize == 0) {
+				/* Don't have a full block to submit to hw */
+				new_len = rem - rctx->hash_carry_len;
+				sg_copy_part_to_buf(req->src, dest, new_len,
+						    rctx->src_sent);
+				rctx->hash_carry_len = rem;
+				flow_log("Exiting with hash carry len: %u\n",
+					 rctx->hash_carry_len);
+				packet_dump("  buf: ",
+					    rctx->hash_carry,
+					    rctx->hash_carry_len);
+				return -EAGAIN;
+			}
+		}
+	}
+
+	/* if we have hash carry, then prefix it to the data in this request */
+	local_nbuf = rctx->hash_carry_len;
+	rctx->hash_carry_len = 0;
+	if (local_nbuf)
+		tx_frag_num++;
+	new_data_len = chunksize - local_nbuf;
+
+	/* Count number of sg entries to be used in this request */
+	rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip,
+				       new_data_len);
+
+	/* AES hashing keeps key size in type field, so need to copy it here */
+	if (hash_parms.alg == HASH_ALG_AES)
+		hash_parms.type = (enum hash_type)cipher_parms.type;
+	else
+		hash_parms.type = spu->spu_hash_type(rctx->total_sent);
+
+	digestsize = spu->spu_digest_size(ctx->digestsize, ctx->auth.alg,
+					  hash_parms.type);
+	hash_parms.digestsize =	digestsize;
+
+	/* update the indexes */
+	rctx->total_sent += chunksize;
+	/* if you sent a prebuf then that wasn't from this req->src */
+	rctx->src_sent += new_data_len;
+
+	if ((rctx->total_sent == rctx->total_todo) && rctx->is_final)
+		hash_parms.pad_len = spu->spu_hash_pad_len(hash_parms.alg,
+							   hash_parms.mode,
+							   chunksize,
+							   blocksize);
+
+	/*
+	 * If a non-first chunk, then include the digest returned from the
+	 * previous chunk so that hw can add to it (except for AES types).
+	 */
+	if ((hash_parms.type == HASH_TYPE_UPDT) &&
+	    (hash_parms.alg != HASH_ALG_AES)) {
+		hash_parms.key_buf = rctx->incr_hash;
+		hash_parms.key_len = digestsize;
+	}
+
+	atomic64_add(chunksize, &iproc_priv.bytes_out);
+
+	flow_log("%s() final: %u nbuf: %u ",
+		 __func__, rctx->is_final, local_nbuf);
+
+	if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
+		flow_log("max_payload infinite\n");
+	else
+		flow_log("max_payload %u\n", ctx->max_payload);
+
+	flow_log("chunk_start: %u chunk_size: %u\n", chunk_start, chunksize);
+
+	/* Prepend SPU header with type 3 BCM header */
+	memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
+
+	hash_parms.prebuf_len = local_nbuf;
+	spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
+					      BCM_HDR_LEN,
+					      &req_opts, &cipher_parms,
+					      &hash_parms, &aead_parms,
+					      new_data_len);
+
+	if (spu_hdr_len == 0) {
+		pr_err("Failed to create SPU request header\n");
+		return -EFAULT;
+	}
+
+	/*
+	 * Determine total length of padding required. Put all padding in one
+	 * buffer.
+	 */
+	data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode, chunksize);
+	db_size = spu_real_db_size(0, 0, local_nbuf, new_data_len,
+				   0, 0, hash_parms.pad_len);
+	if (spu->spu_tx_status_len())
+		stat_pad_len = spu->spu_wordalign_padlen(db_size);
+	if (stat_pad_len)
+		rx_frag_num++;
+	pad_len = hash_parms.pad_len + data_pad_len + stat_pad_len;
+	if (pad_len) {
+		tx_frag_num++;
+		spu->spu_request_pad(rctx->msg_buf.spu_req_pad, data_pad_len,
+				     hash_parms.pad_len, ctx->auth.alg,
+				     ctx->auth.mode, rctx->total_sent,
+				     stat_pad_len);
+	}
+
+	spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
+			      spu_hdr_len);
+	packet_dump("    prebuf: ", rctx->hash_carry, local_nbuf);
+	flow_log("Data:\n");
+	dump_sg(rctx->src_sg, rctx->src_skip, new_data_len);
+	packet_dump("   pad: ", rctx->msg_buf.spu_req_pad, pad_len);
+
+	/*
+	 * Build mailbox message containing SPU request msg and rx buffers
+	 * to catch response message
+	 */
+	memset(mssg, 0, sizeof(*mssg));
+	mssg->type = BRCM_MESSAGE_SPU;
+	mssg->ctx = rctx;	/* Will be returned in response */
+
+	/* Create rx scatterlist to catch result */
+	err = spu_ahash_rx_sg_create(mssg, rctx, rx_frag_num, digestsize,
+				     stat_pad_len);
+	if (err)
+		return err;
+
+	/* Create tx scatterlist containing SPU request message */
+	tx_frag_num += rctx->src_nents;
+	if (spu->spu_tx_status_len())
+		tx_frag_num++;
+	err = spu_ahash_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
+				     local_nbuf, new_data_len, pad_len);
+	if (err)
+		return err;
+
+	err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
+	if (unlikely(err < 0))
+		return err;
+
+	return -EINPROGRESS;
+}
+
+/**
+ * spu_hmac_outer_hash() - Request synchonous software compute of the outer hash
+ * for an HMAC request.
+ * @req:  The HMAC request from the crypto API
+ * @ctx:  The session context
+ *
+ * Return: 0 if synchronous hash operation successful
+ *         -EINVAL if the hash algo is unrecognized
+ *         any other value indicates an error
+ */
+static int spu_hmac_outer_hash(struct ahash_request *req,
+			       struct iproc_ctx_s *ctx)
+{
+	struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+	unsigned int blocksize =
+		crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
+	int rc;
+
+	switch (ctx->auth.alg) {
+	case HASH_ALG_MD5:
+		rc = do_shash("md5", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	case HASH_ALG_SHA1:
+		rc = do_shash("sha1", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	case HASH_ALG_SHA224:
+		rc = do_shash("sha224", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	case HASH_ALG_SHA256:
+		rc = do_shash("sha256", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	case HASH_ALG_SHA384:
+		rc = do_shash("sha384", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	case HASH_ALG_SHA512:
+		rc = do_shash("sha512", req->result, ctx->opad, blocksize,
+			      req->result, ctx->digestsize, NULL, 0);
+		break;
+	default:
+		pr_err("%s() Error : unknown hmac type\n", __func__);
+		rc = -EINVAL;
+	}
+	return rc;
+}
+
+/**
+ * ahash_req_done() - Process a hash result from the SPU hardware.
+ * @rctx: Crypto request context
+ *
+ * Return: 0 if successful
+ *         < 0 if an error
+ */
+static int ahash_req_done(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct ahash_request *req = ahash_request_cast(areq);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	int err;
+
+	memcpy(req->result, rctx->msg_buf.digest, ctx->digestsize);
+
+	if (spu->spu_type == SPU_TYPE_SPUM) {
+		/* byte swap the output from the UPDT function to network byte
+		 * order
+		 */
+		if (ctx->auth.alg == HASH_ALG_MD5) {
+			__swab32s((u32 *)req->result);
+			__swab32s(((u32 *)req->result) + 1);
+			__swab32s(((u32 *)req->result) + 2);
+			__swab32s(((u32 *)req->result) + 3);
+			__swab32s(((u32 *)req->result) + 4);
+		}
+	}
+
+	flow_dump("  digest ", req->result, ctx->digestsize);
+
+	/* if this an HMAC then do the outer hash */
+	if (rctx->is_sw_hmac) {
+		err = spu_hmac_outer_hash(req, ctx);
+		if (err < 0)
+			return err;
+		flow_dump("  hmac: ", req->result, ctx->digestsize);
+	}
+
+	if (rctx->is_sw_hmac || ctx->auth.mode == HASH_MODE_HMAC) {
+		atomic_inc(&iproc_priv.op_counts[SPU_OP_HMAC]);
+		atomic_inc(&iproc_priv.hmac_cnt[ctx->auth.alg]);
+	} else {
+		atomic_inc(&iproc_priv.op_counts[SPU_OP_HASH]);
+		atomic_inc(&iproc_priv.hash_cnt[ctx->auth.alg]);
+	}
+
+	return 0;
+}
+
+/**
+ * handle_ahash_resp() - Process a SPU response message for a hash request.
+ * Checks if the entire crypto API request has been processed, and if so,
+ * invokes post processing on the result.
+ * @rctx: Crypto request context
+ */
+static void handle_ahash_resp(struct iproc_reqctx_s *rctx)
+{
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	struct crypto_async_request *areq = rctx->parent;
+	struct ahash_request *req = ahash_request_cast(areq);
+	struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
+	unsigned int blocksize =
+		crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
+	/*
+	 * Save hash to use as input to next op if incremental. Might be copying
+	 * too much, but that's easier than figuring out actual digest size here
+	 */
+	memcpy(rctx->incr_hash, rctx->msg_buf.digest, MAX_DIGEST_SIZE);
+
+	flow_log("%s() blocksize:%u digestsize:%u\n",
+		 __func__, blocksize, ctx->digestsize);
+
+	atomic64_add(ctx->digestsize, &iproc_priv.bytes_in);
+
+	if (rctx->is_final && (rctx->total_sent == rctx->total_todo))
+		ahash_req_done(rctx);
+}
+
+/**
+ * spu_aead_rx_sg_create() - Build up the scatterlist of buffers used to receive
+ * a SPU response message for an AEAD request. Includes buffers to catch SPU
+ * message headers and the response data.
+ * @mssg:	mailbox message containing the receive sg
+ * @req:	Crypto API request
+ * @rctx:	crypto request context
+ * @rx_frag_num: number of scatterlist elements required to hold the
+ *		SPU response message
+ * @assoc_len:	Length of associated data included in the crypto request
+ * @ret_iv_len: Length of IV returned in response
+ * @resp_len:	Number of bytes of response data expected to be written to
+ *              dst buffer from crypto API
+ * @digestsize: Length of hash digest, in bytes
+ * @stat_pad_len: Number of bytes required to pad the STAT field to
+ *		a 4-byte boundary
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Returns:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int spu_aead_rx_sg_create(struct brcm_message *mssg,
+				 struct aead_request *req,
+				 struct iproc_reqctx_s *rctx,
+				 u8 rx_frag_num,
+				 unsigned int assoc_len,
+				 u32 ret_iv_len, unsigned int resp_len,
+				 unsigned int digestsize, u32 stat_pad_len)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 datalen;		/* Number of bytes of response data expected */
+	u32 assoc_buf_len;
+	u8 data_padlen = 0;
+
+	if (ctx->is_rfc4543) {
+		/* RFC4543: only pad after data, not after AAD */
+		data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
+							  assoc_len + resp_len);
+		assoc_buf_len = assoc_len;
+	} else {
+		data_padlen = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
+							  resp_len);
+		assoc_buf_len = spu->spu_assoc_resp_len(ctx->cipher.mode,
+						assoc_len, ret_iv_len,
+						rctx->is_encrypt);
+	}
+
+	if (ctx->cipher.mode == CIPHER_MODE_CCM)
+		/* ICV (after data) must be in the next 32-bit word for CCM */
+		data_padlen += spu->spu_wordalign_padlen(assoc_buf_len +
+							 resp_len +
+							 data_padlen);
+
+	if (data_padlen)
+		/* have to catch gcm pad in separate buffer */
+		rx_frag_num++;
+
+	mssg->spu.dst = kcalloc(rx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (!mssg->spu.dst)
+		return -ENOMEM;
+
+	sg = mssg->spu.dst;
+	sg_init_table(sg, rx_frag_num);
+
+	/* Space for SPU message header */
+	sg_set_buf(sg++, rctx->msg_buf.spu_resp_hdr, ctx->spu_resp_hdr_len);
+
+	if (assoc_buf_len) {
+		/*
+		 * Don't write directly to req->dst, because SPU may pad the
+		 * assoc data in the response
+		 */
+		memset(rctx->msg_buf.a.resp_aad, 0, assoc_buf_len);
+		sg_set_buf(sg++, rctx->msg_buf.a.resp_aad, assoc_buf_len);
+	}
+
+	if (resp_len) {
+		/*
+		 * Copy in each dst sg entry from request, up to chunksize.
+		 * dst sg catches just the data. digest caught in separate buf.
+		 */
+		datalen = spu_msg_sg_add(&sg, &rctx->dst_sg, &rctx->dst_skip,
+					 rctx->dst_nents, resp_len);
+		if (datalen < (resp_len)) {
+			pr_err("%s(): failed to copy dst sg to mbox msg. expected len %u, datalen %u",
+			       __func__, resp_len, datalen);
+			return -EFAULT;
+		}
+	}
+
+	/* If GCM/CCM data is padded, catch padding in separate buffer */
+	if (data_padlen) {
+		memset(rctx->msg_buf.a.gcmpad, 0, data_padlen);
+		sg_set_buf(sg++, rctx->msg_buf.a.gcmpad, data_padlen);
+	}
+
+	/* Always catch ICV in separate buffer */
+	sg_set_buf(sg++, rctx->msg_buf.digest, digestsize);
+
+	flow_log("stat_pad_len %u\n", stat_pad_len);
+	if (stat_pad_len) {
+		memset(rctx->msg_buf.rx_stat_pad, 0, stat_pad_len);
+		sg_set_buf(sg++, rctx->msg_buf.rx_stat_pad, stat_pad_len);
+	}
+
+	memset(rctx->msg_buf.rx_stat, 0, SPU_RX_STATUS_LEN);
+	sg_set_buf(sg, rctx->msg_buf.rx_stat, spu->spu_rx_status_len());
+
+	return 0;
+}
+
+/**
+ * spu_aead_tx_sg_create() - Build up the scatterlist of buffers used to send a
+ * SPU request message for an AEAD request. Includes SPU message headers and the
+ * request data.
+ * @mssg:	mailbox message containing the transmit sg
+ * @rctx:	crypto request context
+ * @tx_frag_num: number of scatterlist elements required to construct the
+ *		SPU request message
+ * @spu_hdr_len: length of SPU message header in bytes
+ * @assoc:	crypto API associated data scatterlist
+ * @assoc_len:	length of associated data
+ * @assoc_nents: number of scatterlist entries containing assoc data
+ * @aead_iv_len: length of AEAD IV, if included
+ * @chunksize:	Number of bytes of request data
+ * @aad_pad_len: Number of bytes of padding at end of AAD. For GCM/CCM.
+ * @pad_len:	Number of pad bytes
+ * @incl_icv:	If true, write separate ICV buffer after data and
+ *              any padding
+ *
+ * The scatterlist that gets allocated here is freed in spu_chunk_cleanup()
+ * when the request completes, whether the request is handled successfully or
+ * there is an error.
+ *
+ * Return:
+ *   0 if successful
+ *   < 0 if an error
+ */
+static int spu_aead_tx_sg_create(struct brcm_message *mssg,
+				 struct iproc_reqctx_s *rctx,
+				 u8 tx_frag_num,
+				 u32 spu_hdr_len,
+				 struct scatterlist *assoc,
+				 unsigned int assoc_len,
+				 int assoc_nents,
+				 unsigned int aead_iv_len,
+				 unsigned int chunksize,
+				 u32 aad_pad_len, u32 pad_len, bool incl_icv)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct scatterlist *sg;	/* used to build sgs in mbox message */
+	struct scatterlist *assoc_sg = assoc;
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 datalen;		/* Number of bytes of data to write */
+	u32 written;		/* Number of bytes of data written */
+	u32 assoc_offset = 0;
+	u32 stat_len;
+
+	mssg->spu.src = kcalloc(tx_frag_num, sizeof(struct scatterlist),
+				rctx->gfp);
+	if (!mssg->spu.src)
+		return -ENOMEM;
+
+	sg = mssg->spu.src;
+	sg_init_table(sg, tx_frag_num);
+
+	sg_set_buf(sg++, rctx->msg_buf.bcm_spu_req_hdr,
+		   BCM_HDR_LEN + spu_hdr_len);
+
+	if (assoc_len) {
+		/* Copy in each associated data sg entry from request */
+		written = spu_msg_sg_add(&sg, &assoc_sg, &assoc_offset,
+					 assoc_nents, assoc_len);
+		if (written < assoc_len) {
+			pr_err("%s(): failed to copy assoc sg to mbox msg",
+			       __func__);
+			return -EFAULT;
+		}
+	}
+
+	if (aead_iv_len)
+		sg_set_buf(sg++, rctx->msg_buf.iv_ctr, aead_iv_len);
+
+	if (aad_pad_len) {
+		memset(rctx->msg_buf.a.req_aad_pad, 0, aad_pad_len);
+		sg_set_buf(sg++, rctx->msg_buf.a.req_aad_pad, aad_pad_len);
+	}
+
+	datalen = chunksize;
+	if ((chunksize > ctx->digestsize) && incl_icv)
+		datalen -= ctx->digestsize;
+	if (datalen) {
+		/* For aead, a single msg should consume the entire src sg */
+		written = spu_msg_sg_add(&sg, &rctx->src_sg, &rctx->src_skip,
+					 rctx->src_nents, datalen);
+		if (written < datalen) {
+			pr_err("%s(): failed to copy src sg to mbox msg",
+			       __func__);
+			return -EFAULT;
+		}
+	}
+
+	if (pad_len) {
+		memset(rctx->msg_buf.spu_req_pad, 0, pad_len);
+		sg_set_buf(sg++, rctx->msg_buf.spu_req_pad, pad_len);
+	}
+
+	if (incl_icv)
+		sg_set_buf(sg++, rctx->msg_buf.digest, ctx->digestsize);
+
+	stat_len = spu->spu_tx_status_len();
+	if (stat_len) {
+		memset(rctx->msg_buf.tx_stat, 0, stat_len);
+		sg_set_buf(sg, rctx->msg_buf.tx_stat, stat_len);
+	}
+	return 0;
+}
+
+/**
+ * handle_aead_req() - Submit a SPU request message for the next chunk of the
+ * current AEAD request.
+ * @rctx:  Crypto request context
+ *
+ * Unlike other operation types, we assume the length of the request fits in
+ * a single SPU request message. aead_enqueue() makes sure this is true.
+ * Comments for other op types regarding threads applies here as well.
+ *
+ * Unlike incremental hash ops, where the spu returns the entire hash for
+ * truncated algs like sha-224, the SPU returns just the truncated hash in
+ * response to aead requests. So digestsize is always ctx->digestsize here.
+ *
+ * Return: -EINPROGRESS: crypto request has been accepted and result will be
+ *			 returned asynchronously
+ *         Any other value indicates an error
+ */
+static int handle_aead_req(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct aead_request *req = container_of(areq,
+						struct aead_request, base);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	int err;
+	unsigned int chunksize;
+	unsigned int resp_len;
+	u32 spu_hdr_len;
+	u32 db_size;
+	u32 stat_pad_len;
+	u32 pad_len;
+	struct brcm_message *mssg;	/* mailbox message */
+	struct spu_request_opts req_opts;
+	struct spu_cipher_parms cipher_parms;
+	struct spu_hash_parms hash_parms;
+	struct spu_aead_parms aead_parms;
+	int assoc_nents = 0;
+	bool incl_icv = false;
+	unsigned int digestsize = ctx->digestsize;
+
+	/* number of entries in src and dst sg. Always includes SPU msg header.
+	 */
+	u8 rx_frag_num = 2;	/* and STATUS */
+	u8 tx_frag_num = 1;
+
+	/* doing the whole thing at once */
+	chunksize = rctx->total_todo;
+
+	flow_log("%s: chunksize %u\n", __func__, chunksize);
+
+	memset(&req_opts, 0, sizeof(req_opts));
+	memset(&hash_parms, 0, sizeof(hash_parms));
+	memset(&aead_parms, 0, sizeof(aead_parms));
+
+	req_opts.is_inbound = !(rctx->is_encrypt);
+	req_opts.auth_first = ctx->auth_first;
+	req_opts.is_aead = true;
+	req_opts.is_esp = ctx->is_esp;
+
+	cipher_parms.alg = ctx->cipher.alg;
+	cipher_parms.mode = ctx->cipher.mode;
+	cipher_parms.type = ctx->cipher_type;
+	cipher_parms.key_buf = ctx->enckey;
+	cipher_parms.key_len = ctx->enckeylen;
+	cipher_parms.iv_buf = rctx->msg_buf.iv_ctr;
+	cipher_parms.iv_len = rctx->iv_ctr_len;
+
+	hash_parms.alg = ctx->auth.alg;
+	hash_parms.mode = ctx->auth.mode;
+	hash_parms.type = HASH_TYPE_NONE;
+	hash_parms.key_buf = (u8 *)ctx->authkey;
+	hash_parms.key_len = ctx->authkeylen;
+	hash_parms.digestsize = digestsize;
+
+	if ((ctx->auth.alg == HASH_ALG_SHA224) &&
+	    (ctx->authkeylen < SHA224_DIGEST_SIZE))
+		hash_parms.key_len = SHA224_DIGEST_SIZE;
+
+	aead_parms.assoc_size = req->assoclen;
+	if (ctx->is_esp && !ctx->is_rfc4543) {
+		/*
+		 * 8-byte IV is included assoc data in request. SPU2
+		 * expects AAD to include just SPI and seqno. So
+		 * subtract off the IV len.
+		 */
+		aead_parms.assoc_size -= GCM_RFC4106_IV_SIZE;
+
+		if (rctx->is_encrypt) {
+			aead_parms.return_iv = true;
+			aead_parms.ret_iv_len = GCM_RFC4106_IV_SIZE;
+			aead_parms.ret_iv_off = GCM_ESP_SALT_SIZE;
+		}
+	} else {
+		aead_parms.ret_iv_len = 0;
+	}
+
+	/*
+	 * Count number of sg entries from the crypto API request that are to
+	 * be included in this mailbox message. For dst sg, don't count space
+	 * for digest. Digest gets caught in a separate buffer and copied back
+	 * to dst sg when processing response.
+	 */
+	rctx->src_nents = spu_sg_count(rctx->src_sg, rctx->src_skip, chunksize);
+	rctx->dst_nents = spu_sg_count(rctx->dst_sg, rctx->dst_skip, chunksize);
+	if (aead_parms.assoc_size)
+		assoc_nents = spu_sg_count(rctx->assoc, 0,
+					   aead_parms.assoc_size);
+
+	mssg = &rctx->mb_mssg;
+
+	rctx->total_sent = chunksize;
+	rctx->src_sent = chunksize;
+	if (spu->spu_assoc_resp_len(ctx->cipher.mode,
+				    aead_parms.assoc_size,
+				    aead_parms.ret_iv_len,
+				    rctx->is_encrypt))
+		rx_frag_num++;
+
+	aead_parms.iv_len = spu->spu_aead_ivlen(ctx->cipher.mode,
+						rctx->iv_ctr_len);
+
+	if (ctx->auth.alg == HASH_ALG_AES)
+		hash_parms.type = (enum hash_type)ctx->cipher_type;
+
+	/* General case AAD padding (CCM and RFC4543 special cases below) */
+	aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
+						 aead_parms.assoc_size);
+
+	/* General case data padding (CCM decrypt special case below) */
+	aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
+							   chunksize);
+
+	if (ctx->cipher.mode == CIPHER_MODE_CCM) {
+		/*
+		 * for CCM, AAD len + 2 (rather than AAD len) needs to be
+		 * 128-bit aligned
+		 */
+		aead_parms.aad_pad_len = spu->spu_gcm_ccm_pad_len(
+					 ctx->cipher.mode,
+					 aead_parms.assoc_size + 2);
+
+		/*
+		 * And when decrypting CCM, need to pad without including
+		 * size of ICV which is tacked on to end of chunk
+		 */
+		if (!rctx->is_encrypt)
+			aead_parms.data_pad_len =
+				spu->spu_gcm_ccm_pad_len(ctx->cipher.mode,
+							chunksize - digestsize);
+
+		/* CCM also requires software to rewrite portions of IV: */
+		spu->spu_ccm_update_iv(digestsize, &cipher_parms, req->assoclen,
+				       chunksize, rctx->is_encrypt,
+				       ctx->is_esp);
+	}
+
+	if (ctx->is_rfc4543) {
+		/*
+		 * RFC4543: data is included in AAD, so don't pad after AAD
+		 * and pad data based on both AAD + data size
+		 */
+		aead_parms.aad_pad_len = 0;
+		if (!rctx->is_encrypt)
+			aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
+					ctx->cipher.mode,
+					aead_parms.assoc_size + chunksize -
+					digestsize);
+		else
+			aead_parms.data_pad_len = spu->spu_gcm_ccm_pad_len(
+					ctx->cipher.mode,
+					aead_parms.assoc_size + chunksize);
+
+		req_opts.is_rfc4543 = true;
+	}
+
+	if (spu_req_incl_icv(ctx->cipher.mode, rctx->is_encrypt)) {
+		incl_icv = true;
+		tx_frag_num++;
+		/* Copy ICV from end of src scatterlist to digest buf */
+		sg_copy_part_to_buf(req->src, rctx->msg_buf.digest, digestsize,
+				    req->assoclen + rctx->total_sent -
+				    digestsize);
+	}
+
+	atomic64_add(chunksize, &iproc_priv.bytes_out);
+
+	flow_log("%s()-sent chunksize:%u\n", __func__, chunksize);
+
+	/* Prepend SPU header with type 3 BCM header */
+	memcpy(rctx->msg_buf.bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
+
+	spu_hdr_len = spu->spu_create_request(rctx->msg_buf.bcm_spu_req_hdr +
+					      BCM_HDR_LEN, &req_opts,
+					      &cipher_parms, &hash_parms,
+					      &aead_parms, chunksize);
+
+	/* Determine total length of padding. Put all padding in one buffer. */
+	db_size = spu_real_db_size(aead_parms.assoc_size, aead_parms.iv_len, 0,
+				   chunksize, aead_parms.aad_pad_len,
+				   aead_parms.data_pad_len, 0);
+
+	stat_pad_len = spu->spu_wordalign_padlen(db_size);
+
+	if (stat_pad_len)
+		rx_frag_num++;
+	pad_len = aead_parms.data_pad_len + stat_pad_len;
+	if (pad_len) {
+		tx_frag_num++;
+		spu->spu_request_pad(rctx->msg_buf.spu_req_pad,
+				     aead_parms.data_pad_len, 0,
+				     ctx->auth.alg, ctx->auth.mode,
+				     rctx->total_sent, stat_pad_len);
+	}
+
+	spu->spu_dump_msg_hdr(rctx->msg_buf.bcm_spu_req_hdr + BCM_HDR_LEN,
+			      spu_hdr_len);
+	dump_sg(rctx->assoc, 0, aead_parms.assoc_size);
+	packet_dump("    aead iv: ", rctx->msg_buf.iv_ctr, aead_parms.iv_len);
+	packet_log("BD:\n");
+	dump_sg(rctx->src_sg, rctx->src_skip, chunksize);
+	packet_dump("   pad: ", rctx->msg_buf.spu_req_pad, pad_len);
+
+	/*
+	 * Build mailbox message containing SPU request msg and rx buffers
+	 * to catch response message
+	 */
+	memset(mssg, 0, sizeof(*mssg));
+	mssg->type = BRCM_MESSAGE_SPU;
+	mssg->ctx = rctx;	/* Will be returned in response */
+
+	/* Create rx scatterlist to catch result */
+	rx_frag_num += rctx->dst_nents;
+	resp_len = chunksize;
+
+	/*
+	 * Always catch ICV in separate buffer. Have to for GCM/CCM because of
+	 * padding. Have to for SHA-224 and other truncated SHAs because SPU
+	 * sends entire digest back.
+	 */
+	rx_frag_num++;
+
+	if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
+	     (ctx->cipher.mode == CIPHER_MODE_CCM)) && !rctx->is_encrypt) {
+		/*
+		 * Input is ciphertxt plus ICV, but ICV not incl
+		 * in output.
+		 */
+		resp_len -= ctx->digestsize;
+		if (resp_len == 0)
+			/* no rx frags to catch output data */
+			rx_frag_num -= rctx->dst_nents;
+	}
+
+	err = spu_aead_rx_sg_create(mssg, req, rctx, rx_frag_num,
+				    aead_parms.assoc_size,
+				    aead_parms.ret_iv_len, resp_len, digestsize,
+				    stat_pad_len);
+	if (err)
+		return err;
+
+	/* Create tx scatterlist containing SPU request message */
+	tx_frag_num += rctx->src_nents;
+	tx_frag_num += assoc_nents;
+	if (aead_parms.aad_pad_len)
+		tx_frag_num++;
+	if (aead_parms.iv_len)
+		tx_frag_num++;
+	if (spu->spu_tx_status_len())
+		tx_frag_num++;
+	err = spu_aead_tx_sg_create(mssg, rctx, tx_frag_num, spu_hdr_len,
+				    rctx->assoc, aead_parms.assoc_size,
+				    assoc_nents, aead_parms.iv_len, chunksize,
+				    aead_parms.aad_pad_len, pad_len, incl_icv);
+	if (err)
+		return err;
+
+	err = mailbox_send_message(mssg, req->base.flags, rctx->chan_idx);
+	if (unlikely(err < 0))
+		return err;
+
+	return -EINPROGRESS;
+}
+
+/**
+ * handle_aead_resp() - Process a SPU response message for an AEAD request.
+ * @rctx:  Crypto request context
+ */
+static void handle_aead_resp(struct iproc_reqctx_s *rctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_async_request *areq = rctx->parent;
+	struct aead_request *req = container_of(areq,
+						struct aead_request, base);
+	struct iproc_ctx_s *ctx = rctx->ctx;
+	u32 payload_len;
+	unsigned int icv_offset;
+	u32 result_len;
+
+	/* See how much data was returned */
+	payload_len = spu->spu_payload_length(rctx->msg_buf.spu_resp_hdr);
+	flow_log("payload_len %u\n", payload_len);
+
+	/* only count payload */
+	atomic64_add(payload_len, &iproc_priv.bytes_in);
+
+	if (req->assoclen)
+		packet_dump("  assoc_data ", rctx->msg_buf.a.resp_aad,
+			    req->assoclen);
+
+	/*
+	 * Copy the ICV back to the destination
+	 * buffer. In decrypt case, SPU gives us back the digest, but crypto
+	 * API doesn't expect ICV in dst buffer.
+	 */
+	result_len = req->cryptlen;
+	if (rctx->is_encrypt) {
+		icv_offset = req->assoclen + rctx->total_sent;
+		packet_dump("  ICV: ", rctx->msg_buf.digest, ctx->digestsize);
+		flow_log("copying ICV to dst sg at offset %u\n", icv_offset);
+		sg_copy_part_from_buf(req->dst, rctx->msg_buf.digest,
+				      ctx->digestsize, icv_offset);
+		result_len += ctx->digestsize;
+	}
+
+	packet_log("response data:  ");
+	dump_sg(req->dst, req->assoclen, result_len);
+
+	atomic_inc(&iproc_priv.op_counts[SPU_OP_AEAD]);
+	if (ctx->cipher.alg == CIPHER_ALG_AES) {
+		if (ctx->cipher.mode == CIPHER_MODE_CCM)
+			atomic_inc(&iproc_priv.aead_cnt[AES_CCM]);
+		else if (ctx->cipher.mode == CIPHER_MODE_GCM)
+			atomic_inc(&iproc_priv.aead_cnt[AES_GCM]);
+		else
+			atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
+	} else {
+		atomic_inc(&iproc_priv.aead_cnt[AUTHENC]);
+	}
+}
+
+/**
+ * spu_chunk_cleanup() - Do cleanup after processing one chunk of a request
+ * @rctx:  request context
+ *
+ * Mailbox scatterlists are allocated for each chunk. So free them after
+ * processing each chunk.
+ */
+static void spu_chunk_cleanup(struct iproc_reqctx_s *rctx)
+{
+	/* mailbox message used to tx request */
+	struct brcm_message *mssg = &rctx->mb_mssg;
+
+	kfree(mssg->spu.src);
+	kfree(mssg->spu.dst);
+	memset(mssg, 0, sizeof(struct brcm_message));
+}
+
+/**
+ * finish_req() - Used to invoke the complete callback from the requester when
+ * a request has been handled asynchronously.
+ * @rctx:  Request context
+ * @err:   Indicates whether the request was successful or not
+ *
+ * Ensures that cleanup has been done for request
+ */
+static void finish_req(struct iproc_reqctx_s *rctx, int err)
+{
+	struct crypto_async_request *areq = rctx->parent;
+
+	flow_log("%s() err:%d\n\n", __func__, err);
+
+	/* No harm done if already called */
+	spu_chunk_cleanup(rctx);
+
+	if (areq)
+		areq->complete(areq, err);
+}
+
+/**
+ * spu_rx_callback() - Callback from mailbox framework with a SPU response.
+ * @cl:		mailbox client structure for SPU driver
+ * @msg:	mailbox message containing SPU response
+ */
+static void spu_rx_callback(struct mbox_client *cl, void *msg)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct brcm_message *mssg = msg;
+	struct iproc_reqctx_s *rctx;
+	int err;
+
+	rctx = mssg->ctx;
+	if (unlikely(!rctx)) {
+		/* This is fatal */
+		pr_err("%s(): no request context", __func__);
+		err = -EFAULT;
+		goto cb_finish;
+	}
+
+	/* process the SPU status */
+	err = spu->spu_status_process(rctx->msg_buf.rx_stat);
+	if (err != 0) {
+		if (err == SPU_INVALID_ICV)
+			atomic_inc(&iproc_priv.bad_icv);
+		err = -EBADMSG;
+		goto cb_finish;
+	}
+
+	/* Process the SPU response message */
+	switch (rctx->ctx->alg->type) {
+	case CRYPTO_ALG_TYPE_SKCIPHER:
+		handle_skcipher_resp(rctx);
+		break;
+	case CRYPTO_ALG_TYPE_AHASH:
+		handle_ahash_resp(rctx);
+		break;
+	case CRYPTO_ALG_TYPE_AEAD:
+		handle_aead_resp(rctx);
+		break;
+	default:
+		err = -EINVAL;
+		goto cb_finish;
+	}
+
+	/*
+	 * If this response does not complete the request, then send the next
+	 * request chunk.
+	 */
+	if (rctx->total_sent < rctx->total_todo) {
+		/* Deallocate anything specific to previous chunk */
+		spu_chunk_cleanup(rctx);
+
+		switch (rctx->ctx->alg->type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			err = handle_skcipher_req(rctx);
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			err = handle_ahash_req(rctx);
+			if (err == -EAGAIN)
+				/*
+				 * we saved data in hash carry, but tell crypto
+				 * API we successfully completed request.
+				 */
+				err = 0;
+			break;
+		case CRYPTO_ALG_TYPE_AEAD:
+			err = handle_aead_req(rctx);
+			break;
+		default:
+			err = -EINVAL;
+		}
+
+		if (err == -EINPROGRESS)
+			/* Successfully submitted request for next chunk */
+			return;
+	}
+
+cb_finish:
+	finish_req(rctx, err);
+}
+
+/* ==================== Kernel Cryptographic API ==================== */
+
+/**
+ * skcipher_enqueue() - Handle skcipher encrypt or decrypt request.
+ * @req:	Crypto API request
+ * @encrypt:	true if encrypting; false if decrypting
+ *
+ * Return: -EINPROGRESS if request accepted and result will be returned
+ *			asynchronously
+ *	   < 0 if an error
+ */
+static int skcipher_enqueue(struct skcipher_request *req, bool encrypt)
+{
+	struct iproc_reqctx_s *rctx = skcipher_request_ctx(req);
+	struct iproc_ctx_s *ctx =
+	    crypto_skcipher_ctx(crypto_skcipher_reqtfm(req));
+	int err;
+
+	flow_log("%s() enc:%u\n", __func__, encrypt);
+
+	rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+	rctx->parent = &req->base;
+	rctx->is_encrypt = encrypt;
+	rctx->bd_suppress = false;
+	rctx->total_todo = req->cryptlen;
+	rctx->src_sent = 0;
+	rctx->total_sent = 0;
+	rctx->total_received = 0;
+	rctx->ctx = ctx;
+
+	/* Initialize current position in src and dst scatterlists */
+	rctx->src_sg = req->src;
+	rctx->src_nents = 0;
+	rctx->src_skip = 0;
+	rctx->dst_sg = req->dst;
+	rctx->dst_nents = 0;
+	rctx->dst_skip = 0;
+
+	if (ctx->cipher.mode == CIPHER_MODE_CBC ||
+	    ctx->cipher.mode == CIPHER_MODE_CTR ||
+	    ctx->cipher.mode == CIPHER_MODE_OFB ||
+	    ctx->cipher.mode == CIPHER_MODE_XTS ||
+	    ctx->cipher.mode == CIPHER_MODE_GCM ||
+	    ctx->cipher.mode == CIPHER_MODE_CCM) {
+		rctx->iv_ctr_len =
+		    crypto_skcipher_ivsize(crypto_skcipher_reqtfm(req));
+		memcpy(rctx->msg_buf.iv_ctr, req->iv, rctx->iv_ctr_len);
+	} else {
+		rctx->iv_ctr_len = 0;
+	}
+
+	/* Choose a SPU to process this request */
+	rctx->chan_idx = select_channel();
+	err = handle_skcipher_req(rctx);
+	if (err != -EINPROGRESS)
+		/* synchronous result */
+		spu_chunk_cleanup(rctx);
+
+	return err;
+}
+
+static int des_setkey(struct crypto_skcipher *cipher, const u8 *key,
+		      unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);
+	int err;
+
+	err = verify_skcipher_des_key(cipher, key);
+	if (err)
+		return err;
+
+	ctx->cipher_type = CIPHER_TYPE_DES;
+	return 0;
+}
+
+static int threedes_setkey(struct crypto_skcipher *cipher, const u8 *key,
+			   unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);
+	int err;
+
+	err = verify_skcipher_des3_key(cipher, key);
+	if (err)
+		return err;
+
+	ctx->cipher_type = CIPHER_TYPE_3DES;
+	return 0;
+}
+
+static int aes_setkey(struct crypto_skcipher *cipher, const u8 *key,
+		      unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);
+
+	if (ctx->cipher.mode == CIPHER_MODE_XTS)
+		/* XTS includes two keys of equal length */
+		keylen = keylen / 2;
+
+	switch (keylen) {
+	case AES_KEYSIZE_128:
+		ctx->cipher_type = CIPHER_TYPE_AES128;
+		break;
+	case AES_KEYSIZE_192:
+		ctx->cipher_type = CIPHER_TYPE_AES192;
+		break;
+	case AES_KEYSIZE_256:
+		ctx->cipher_type = CIPHER_TYPE_AES256;
+		break;
+	default:
+		return -EINVAL;
+	}
+	WARN_ON((ctx->max_payload != SPU_MAX_PAYLOAD_INF) &&
+		((ctx->max_payload % AES_BLOCK_SIZE) != 0));
+	return 0;
+}
+
+static int skcipher_setkey(struct crypto_skcipher *cipher, const u8 *key,
+			     unsigned int keylen)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct iproc_ctx_s *ctx = crypto_skcipher_ctx(cipher);
+	struct spu_cipher_parms cipher_parms;
+	u32 alloc_len = 0;
+	int err;
+
+	flow_log("skcipher_setkey() keylen: %d\n", keylen);
+	flow_dump("  key: ", key, keylen);
+
+	switch (ctx->cipher.alg) {
+	case CIPHER_ALG_DES:
+		err = des_setkey(cipher, key, keylen);
+		break;
+	case CIPHER_ALG_3DES:
+		err = threedes_setkey(cipher, key, keylen);
+		break;
+	case CIPHER_ALG_AES:
+		err = aes_setkey(cipher, key, keylen);
+		break;
+	default:
+		pr_err("%s() Error: unknown cipher alg\n", __func__);
+		err = -EINVAL;
+	}
+	if (err)
+		return err;
+
+	memcpy(ctx->enckey, key, keylen);
+	ctx->enckeylen = keylen;
+
+	/* SPU needs XTS keys in the reverse order the crypto API presents */
+	if ((ctx->cipher.alg == CIPHER_ALG_AES) &&
+	    (ctx->cipher.mode == CIPHER_MODE_XTS)) {
+		unsigned int xts_keylen = keylen / 2;
+
+		memcpy(ctx->enckey, key + xts_keylen, xts_keylen);
+		memcpy(ctx->enckey + xts_keylen, key, xts_keylen);
+	}
+
+	if (spu->spu_type == SPU_TYPE_SPUM)
+		alloc_len = BCM_HDR_LEN + SPU_HEADER_ALLOC_LEN;
+	else if (spu->spu_type == SPU_TYPE_SPU2)
+		alloc_len = BCM_HDR_LEN + SPU2_HEADER_ALLOC_LEN;
+	memset(ctx->bcm_spu_req_hdr, 0, alloc_len);
+	cipher_parms.iv_buf = NULL;
+	cipher_parms.iv_len = crypto_skcipher_ivsize(cipher);
+	flow_log("%s: iv_len %u\n", __func__, cipher_parms.iv_len);
+
+	cipher_parms.alg = ctx->cipher.alg;
+	cipher_parms.mode = ctx->cipher.mode;
+	cipher_parms.type = ctx->cipher_type;
+	cipher_parms.key_buf = ctx->enckey;
+	cipher_parms.key_len = ctx->enckeylen;
+
+	/* Prepend SPU request message with BCM header */
+	memcpy(ctx->bcm_spu_req_hdr, BCMHEADER, BCM_HDR_LEN);
+	ctx->spu_req_hdr_len =
+	    spu->spu_cipher_req_init(ctx->bcm_spu_req_hdr + BCM_HDR_LEN,
+				     &cipher_parms);
+
+	ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
+							  ctx->enckeylen,
+							  false);
+
+	atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_CIPHER]);
+
+	return 0;
+}
+
+static int skcipher_encrypt(struct skcipher_request *req)
+{
+	flow_log("skcipher_encrypt() nbytes:%u\n", req->cryptlen);
+
+	return skcipher_enqueue(req, true);
+}
+
+static int skcipher_decrypt(struct skcipher_request *req)
+{
+	flow_log("skcipher_decrypt() nbytes:%u\n", req->cryptlen);
+	return skcipher_enqueue(req, false);
+}
+
+static int ahash_enqueue(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	int err;
+	const char *alg_name;
+
+	flow_log("ahash_enqueue() nbytes:%u\n", req->nbytes);
+
+	rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+	rctx->parent = &req->base;
+	rctx->ctx = ctx;
+	rctx->bd_suppress = true;
+	memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
+
+	/* Initialize position in src scatterlist */
+	rctx->src_sg = req->src;
+	rctx->src_skip = 0;
+	rctx->src_nents = 0;
+	rctx->dst_sg = NULL;
+	rctx->dst_skip = 0;
+	rctx->dst_nents = 0;
+
+	/* SPU2 hardware does not compute hash of zero length data */
+	if ((rctx->is_final == 1) && (rctx->total_todo == 0) &&
+	    (iproc_priv.spu.spu_type == SPU_TYPE_SPU2)) {
+		alg_name = crypto_ahash_alg_name(tfm);
+		flow_log("Doing %sfinal %s zero-len hash request in software\n",
+			 rctx->is_final ? "" : "non-", alg_name);
+		err = do_shash((unsigned char *)alg_name, req->result,
+			       NULL, 0, NULL, 0, ctx->authkey,
+			       ctx->authkeylen);
+		if (err < 0)
+			flow_log("Hash request failed with error %d\n", err);
+		return err;
+	}
+	/* Choose a SPU to process this request */
+	rctx->chan_idx = select_channel();
+
+	err = handle_ahash_req(rctx);
+	if (err != -EINPROGRESS)
+		/* synchronous result */
+		spu_chunk_cleanup(rctx);
+
+	if (err == -EAGAIN)
+		/*
+		 * we saved data in hash carry, but tell crypto API
+		 * we successfully completed request.
+		 */
+		err = 0;
+
+	return err;
+}
+
+static int __ahash_init(struct ahash_request *req)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+
+	flow_log("%s()\n", __func__);
+
+	/* Initialize the context */
+	rctx->hash_carry_len = 0;
+	rctx->is_final = 0;
+
+	rctx->total_todo = 0;
+	rctx->src_sent = 0;
+	rctx->total_sent = 0;
+	rctx->total_received = 0;
+
+	ctx->digestsize = crypto_ahash_digestsize(tfm);
+	/* If we add a hash whose digest is larger, catch it here. */
+	WARN_ON(ctx->digestsize > MAX_DIGEST_SIZE);
+
+	rctx->is_sw_hmac = false;
+
+	ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen, 0,
+							  true);
+
+	return 0;
+}
+
+/**
+ * spu_no_incr_hash() - Determine whether incremental hashing is supported.
+ * @ctx:  Crypto session context
+ *
+ * SPU-2 does not support incremental hashing (we'll have to revisit and
+ * condition based on chip revision or device tree entry if future versions do
+ * support incremental hash)
+ *
+ * SPU-M also doesn't support incremental hashing of AES-XCBC
+ *
+ * Return: true if incremental hashing is not supported
+ *         false otherwise
+ */
+static bool spu_no_incr_hash(struct iproc_ctx_s *ctx)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+
+	if (spu->spu_type == SPU_TYPE_SPU2)
+		return true;
+
+	if ((ctx->auth.alg == HASH_ALG_AES) &&
+	    (ctx->auth.mode == HASH_MODE_XCBC))
+		return true;
+
+	/* Otherwise, incremental hashing is supported */
+	return false;
+}
+
+static int ahash_init(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	const char *alg_name;
+	struct crypto_shash *hash;
+	int ret;
+	gfp_t gfp;
+
+	if (spu_no_incr_hash(ctx)) {
+		/*
+		 * If we get an incremental hashing request and it's not
+		 * supported by the hardware, we need to handle it in software
+		 * by calling synchronous hash functions.
+		 */
+		alg_name = crypto_ahash_alg_name(tfm);
+		hash = crypto_alloc_shash(alg_name, 0, 0);
+		if (IS_ERR(hash)) {
+			ret = PTR_ERR(hash);
+			goto err;
+		}
+
+		gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+		ctx->shash = kmalloc(sizeof(*ctx->shash) +
+				     crypto_shash_descsize(hash), gfp);
+		if (!ctx->shash) {
+			ret = -ENOMEM;
+			goto err_hash;
+		}
+		ctx->shash->tfm = hash;
+
+		/* Set the key using data we already have from setkey */
+		if (ctx->authkeylen > 0) {
+			ret = crypto_shash_setkey(hash, ctx->authkey,
+						  ctx->authkeylen);
+			if (ret)
+				goto err_shash;
+		}
+
+		/* Initialize hash w/ this key and other params */
+		ret = crypto_shash_init(ctx->shash);
+		if (ret)
+			goto err_shash;
+	} else {
+		/* Otherwise call the internal function which uses SPU hw */
+		ret = __ahash_init(req);
+	}
+
+	return ret;
+
+err_shash:
+	kfree(ctx->shash);
+err_hash:
+	crypto_free_shash(hash);
+err:
+	return ret;
+}
+
+static int __ahash_update(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+
+	flow_log("ahash_update() nbytes:%u\n", req->nbytes);
+
+	if (!req->nbytes)
+		return 0;
+	rctx->total_todo += req->nbytes;
+	rctx->src_sent = 0;
+
+	return ahash_enqueue(req);
+}
+
+static int ahash_update(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	u8 *tmpbuf;
+	int ret;
+	int nents;
+	gfp_t gfp;
+
+	if (spu_no_incr_hash(ctx)) {
+		/*
+		 * If we get an incremental hashing request and it's not
+		 * supported by the hardware, we need to handle it in software
+		 * by calling synchronous hash functions.
+		 */
+		if (req->src)
+			nents = sg_nents(req->src);
+		else
+			return -EINVAL;
+
+		/* Copy data from req scatterlist to tmp buffer */
+		gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+		tmpbuf = kmalloc(req->nbytes, gfp);
+		if (!tmpbuf)
+			return -ENOMEM;
+
+		if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
+				req->nbytes) {
+			kfree(tmpbuf);
+			return -EINVAL;
+		}
+
+		/* Call synchronous update */
+		ret = crypto_shash_update(ctx->shash, tmpbuf, req->nbytes);
+		kfree(tmpbuf);
+	} else {
+		/* Otherwise call the internal function which uses SPU hw */
+		ret = __ahash_update(req);
+	}
+
+	return ret;
+}
+
+static int __ahash_final(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+
+	flow_log("ahash_final() nbytes:%u\n", req->nbytes);
+
+	rctx->is_final = 1;
+
+	return ahash_enqueue(req);
+}
+
+static int ahash_final(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	int ret;
+
+	if (spu_no_incr_hash(ctx)) {
+		/*
+		 * If we get an incremental hashing request and it's not
+		 * supported by the hardware, we need to handle it in software
+		 * by calling synchronous hash functions.
+		 */
+		ret = crypto_shash_final(ctx->shash, req->result);
+
+		/* Done with hash, can deallocate it now */
+		crypto_free_shash(ctx->shash->tfm);
+		kfree(ctx->shash);
+
+	} else {
+		/* Otherwise call the internal function which uses SPU hw */
+		ret = __ahash_final(req);
+	}
+
+	return ret;
+}
+
+static int __ahash_finup(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+
+	flow_log("ahash_finup() nbytes:%u\n", req->nbytes);
+
+	rctx->total_todo += req->nbytes;
+	rctx->src_sent = 0;
+	rctx->is_final = 1;
+
+	return ahash_enqueue(req);
+}
+
+static int ahash_finup(struct ahash_request *req)
+{
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	u8 *tmpbuf;
+	int ret;
+	int nents;
+	gfp_t gfp;
+
+	if (spu_no_incr_hash(ctx)) {
+		/*
+		 * If we get an incremental hashing request and it's not
+		 * supported by the hardware, we need to handle it in software
+		 * by calling synchronous hash functions.
+		 */
+		if (req->src) {
+			nents = sg_nents(req->src);
+		} else {
+			ret = -EINVAL;
+			goto ahash_finup_exit;
+		}
+
+		/* Copy data from req scatterlist to tmp buffer */
+		gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+		tmpbuf = kmalloc(req->nbytes, gfp);
+		if (!tmpbuf) {
+			ret = -ENOMEM;
+			goto ahash_finup_exit;
+		}
+
+		if (sg_copy_to_buffer(req->src, nents, tmpbuf, req->nbytes) !=
+				req->nbytes) {
+			ret = -EINVAL;
+			goto ahash_finup_free;
+		}
+
+		/* Call synchronous update */
+		ret = crypto_shash_finup(ctx->shash, tmpbuf, req->nbytes,
+					 req->result);
+	} else {
+		/* Otherwise call the internal function which uses SPU hw */
+		return __ahash_finup(req);
+	}
+ahash_finup_free:
+	kfree(tmpbuf);
+
+ahash_finup_exit:
+	/* Done with hash, can deallocate it now */
+	crypto_free_shash(ctx->shash->tfm);
+	kfree(ctx->shash);
+	return ret;
+}
+
+static int ahash_digest(struct ahash_request *req)
+{
+	int err;
+
+	flow_log("ahash_digest() nbytes:%u\n", req->nbytes);
+
+	/* whole thing at once */
+	err = __ahash_init(req);
+	if (!err)
+		err = __ahash_finup(req);
+
+	return err;
+}
+
+static int ahash_setkey(struct crypto_ahash *ahash, const u8 *key,
+			unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
+
+	flow_log("%s() ahash:%p key:%p keylen:%u\n",
+		 __func__, ahash, key, keylen);
+	flow_dump("  key: ", key, keylen);
+
+	if (ctx->auth.alg == HASH_ALG_AES) {
+		switch (keylen) {
+		case AES_KEYSIZE_128:
+			ctx->cipher_type = CIPHER_TYPE_AES128;
+			break;
+		case AES_KEYSIZE_192:
+			ctx->cipher_type = CIPHER_TYPE_AES192;
+			break;
+		case AES_KEYSIZE_256:
+			ctx->cipher_type = CIPHER_TYPE_AES256;
+			break;
+		default:
+			pr_err("%s() Error: Invalid key length\n", __func__);
+			return -EINVAL;
+		}
+	} else {
+		pr_err("%s() Error: unknown hash alg\n", __func__);
+		return -EINVAL;
+	}
+	memcpy(ctx->authkey, key, keylen);
+	ctx->authkeylen = keylen;
+
+	return 0;
+}
+
+static int ahash_export(struct ahash_request *req, void *out)
+{
+	const struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)out;
+
+	spu_exp->total_todo = rctx->total_todo;
+	spu_exp->total_sent = rctx->total_sent;
+	spu_exp->is_sw_hmac = rctx->is_sw_hmac;
+	memcpy(spu_exp->hash_carry, rctx->hash_carry, sizeof(rctx->hash_carry));
+	spu_exp->hash_carry_len = rctx->hash_carry_len;
+	memcpy(spu_exp->incr_hash, rctx->incr_hash, sizeof(rctx->incr_hash));
+
+	return 0;
+}
+
+static int ahash_import(struct ahash_request *req, const void *in)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct spu_hash_export_s *spu_exp = (struct spu_hash_export_s *)in;
+
+	rctx->total_todo = spu_exp->total_todo;
+	rctx->total_sent = spu_exp->total_sent;
+	rctx->is_sw_hmac = spu_exp->is_sw_hmac;
+	memcpy(rctx->hash_carry, spu_exp->hash_carry, sizeof(rctx->hash_carry));
+	rctx->hash_carry_len = spu_exp->hash_carry_len;
+	memcpy(rctx->incr_hash, spu_exp->incr_hash, sizeof(rctx->incr_hash));
+
+	return 0;
+}
+
+static int ahash_hmac_setkey(struct crypto_ahash *ahash, const u8 *key,
+			     unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(ahash);
+	unsigned int blocksize =
+		crypto_tfm_alg_blocksize(crypto_ahash_tfm(ahash));
+	unsigned int digestsize = crypto_ahash_digestsize(ahash);
+	unsigned int index;
+	int rc;
+
+	flow_log("%s() ahash:%p key:%p keylen:%u blksz:%u digestsz:%u\n",
+		 __func__, ahash, key, keylen, blocksize, digestsize);
+	flow_dump("  key: ", key, keylen);
+
+	if (keylen > blocksize) {
+		switch (ctx->auth.alg) {
+		case HASH_ALG_MD5:
+			rc = do_shash("md5", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA1:
+			rc = do_shash("sha1", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA224:
+			rc = do_shash("sha224", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA256:
+			rc = do_shash("sha256", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA384:
+			rc = do_shash("sha384", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA512:
+			rc = do_shash("sha512", ctx->authkey, key, keylen, NULL,
+				      0, NULL, 0);
+			break;
+		case HASH_ALG_SHA3_224:
+			rc = do_shash("sha3-224", ctx->authkey, key, keylen,
+				      NULL, 0, NULL, 0);
+			break;
+		case HASH_ALG_SHA3_256:
+			rc = do_shash("sha3-256", ctx->authkey, key, keylen,
+				      NULL, 0, NULL, 0);
+			break;
+		case HASH_ALG_SHA3_384:
+			rc = do_shash("sha3-384", ctx->authkey, key, keylen,
+				      NULL, 0, NULL, 0);
+			break;
+		case HASH_ALG_SHA3_512:
+			rc = do_shash("sha3-512", ctx->authkey, key, keylen,
+				      NULL, 0, NULL, 0);
+			break;
+		default:
+			pr_err("%s() Error: unknown hash alg\n", __func__);
+			return -EINVAL;
+		}
+		if (rc < 0) {
+			pr_err("%s() Error %d computing shash for %s\n",
+			       __func__, rc, hash_alg_name[ctx->auth.alg]);
+			return rc;
+		}
+		ctx->authkeylen = digestsize;
+
+		flow_log("  keylen > digestsize... hashed\n");
+		flow_dump("  newkey: ", ctx->authkey, ctx->authkeylen);
+	} else {
+		memcpy(ctx->authkey, key, keylen);
+		ctx->authkeylen = keylen;
+	}
+
+	/*
+	 * Full HMAC operation in SPUM is not verified,
+	 * So keeping the generation of IPAD, OPAD and
+	 * outer hashing in software.
+	 */
+	if (iproc_priv.spu.spu_type == SPU_TYPE_SPUM) {
+		memcpy(ctx->ipad, ctx->authkey, ctx->authkeylen);
+		memset(ctx->ipad + ctx->authkeylen, 0,
+		       blocksize - ctx->authkeylen);
+		ctx->authkeylen = 0;
+		memcpy(ctx->opad, ctx->ipad, blocksize);
+
+		for (index = 0; index < blocksize; index++) {
+			ctx->ipad[index] ^= HMAC_IPAD_VALUE;
+			ctx->opad[index] ^= HMAC_OPAD_VALUE;
+		}
+
+		flow_dump("  ipad: ", ctx->ipad, blocksize);
+		flow_dump("  opad: ", ctx->opad, blocksize);
+	}
+	ctx->digestsize = digestsize;
+	atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_HMAC]);
+
+	return 0;
+}
+
+static int ahash_hmac_init(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	unsigned int blocksize =
+			crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
+
+	flow_log("ahash_hmac_init()\n");
+
+	/* init the context as a hash */
+	ahash_init(req);
+
+	if (!spu_no_incr_hash(ctx)) {
+		/* SPU-M can do incr hashing but needs sw for outer HMAC */
+		rctx->is_sw_hmac = true;
+		ctx->auth.mode = HASH_MODE_HASH;
+		/* start with a prepended ipad */
+		memcpy(rctx->hash_carry, ctx->ipad, blocksize);
+		rctx->hash_carry_len = blocksize;
+		rctx->total_todo += blocksize;
+	}
+
+	return 0;
+}
+
+static int ahash_hmac_update(struct ahash_request *req)
+{
+	flow_log("ahash_hmac_update() nbytes:%u\n", req->nbytes);
+
+	if (!req->nbytes)
+		return 0;
+
+	return ahash_update(req);
+}
+
+static int ahash_hmac_final(struct ahash_request *req)
+{
+	flow_log("ahash_hmac_final() nbytes:%u\n", req->nbytes);
+
+	return ahash_final(req);
+}
+
+static int ahash_hmac_finup(struct ahash_request *req)
+{
+	flow_log("ahash_hmac_finupl() nbytes:%u\n", req->nbytes);
+
+	return ahash_finup(req);
+}
+
+static int ahash_hmac_digest(struct ahash_request *req)
+{
+	struct iproc_reqctx_s *rctx = ahash_request_ctx(req);
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_ahash_ctx(tfm);
+	unsigned int blocksize =
+			crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm));
+
+	flow_log("ahash_hmac_digest() nbytes:%u\n", req->nbytes);
+
+	/* Perform initialization and then call finup */
+	__ahash_init(req);
+
+	if (iproc_priv.spu.spu_type == SPU_TYPE_SPU2) {
+		/*
+		 * SPU2 supports full HMAC implementation in the
+		 * hardware, need not to generate IPAD, OPAD and
+		 * outer hash in software.
+		 * Only for hash key len > hash block size, SPU2
+		 * expects to perform hashing on the key, shorten
+		 * it to digest size and feed it as hash key.
+		 */
+		rctx->is_sw_hmac = false;
+		ctx->auth.mode = HASH_MODE_HMAC;
+	} else {
+		rctx->is_sw_hmac = true;
+		ctx->auth.mode = HASH_MODE_HASH;
+		/* start with a prepended ipad */
+		memcpy(rctx->hash_carry, ctx->ipad, blocksize);
+		rctx->hash_carry_len = blocksize;
+		rctx->total_todo += blocksize;
+	}
+
+	return __ahash_finup(req);
+}
+
+/* aead helpers */
+
+static int aead_need_fallback(struct aead_request *req)
+{
+	struct iproc_reqctx_s *rctx = aead_request_ctx(req);
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
+	u32 payload_len;
+
+	/*
+	 * SPU hardware cannot handle the AES-GCM/CCM case where plaintext
+	 * and AAD are both 0 bytes long. So use fallback in this case.
+	 */
+	if (((ctx->cipher.mode == CIPHER_MODE_GCM) ||
+	     (ctx->cipher.mode == CIPHER_MODE_CCM)) &&
+	    (req->assoclen == 0)) {
+		if ((rctx->is_encrypt && (req->cryptlen == 0)) ||
+		    (!rctx->is_encrypt && (req->cryptlen == ctx->digestsize))) {
+			flow_log("AES GCM/CCM needs fallback for 0 len req\n");
+			return 1;
+		}
+	}
+
+	/* SPU-M hardware only supports CCM digest size of 8, 12, or 16 bytes */
+	if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
+	    (spu->spu_type == SPU_TYPE_SPUM) &&
+	    (ctx->digestsize != 8) && (ctx->digestsize != 12) &&
+	    (ctx->digestsize != 16)) {
+		flow_log("%s() AES CCM needs fallback for digest size %d\n",
+			 __func__, ctx->digestsize);
+		return 1;
+	}
+
+	/*
+	 * SPU-M on NSP has an issue where AES-CCM hash is not correct
+	 * when AAD size is 0
+	 */
+	if ((ctx->cipher.mode == CIPHER_MODE_CCM) &&
+	    (spu->spu_subtype == SPU_SUBTYPE_SPUM_NSP) &&
+	    (req->assoclen == 0)) {
+		flow_log("%s() AES_CCM needs fallback for 0 len AAD on NSP\n",
+			 __func__);
+		return 1;
+	}
+
+	/*
+	 * RFC4106 and RFC4543 cannot handle the case where AAD is other than
+	 * 16 or 20 bytes long. So use fallback in this case.
+	 */
+	if (ctx->cipher.mode == CIPHER_MODE_GCM &&
+	    ctx->cipher.alg == CIPHER_ALG_AES &&
+	    rctx->iv_ctr_len == GCM_RFC4106_IV_SIZE &&
+	    req->assoclen != 16 && req->assoclen != 20) {
+		flow_log("RFC4106/RFC4543 needs fallback for assoclen"
+			 " other than 16 or 20 bytes\n");
+		return 1;
+	}
+
+	payload_len = req->cryptlen;
+	if (spu->spu_type == SPU_TYPE_SPUM)
+		payload_len += req->assoclen;
+
+	flow_log("%s() payload len: %u\n", __func__, payload_len);
+
+	if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
+		return 0;
+	else
+		return payload_len > ctx->max_payload;
+}
+
+static void aead_complete(struct crypto_async_request *areq, int err)
+{
+	struct aead_request *req =
+	    container_of(areq, struct aead_request, base);
+	struct iproc_reqctx_s *rctx = aead_request_ctx(req);
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+
+	flow_log("%s() err:%d\n", __func__, err);
+
+	areq->tfm = crypto_aead_tfm(aead);
+
+	areq->complete = rctx->old_complete;
+	areq->data = rctx->old_data;
+
+	areq->complete(areq, err);
+}
+
+static int aead_do_fallback(struct aead_request *req, bool is_encrypt)
+{
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
+	struct iproc_reqctx_s *rctx = aead_request_ctx(req);
+	struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
+	int err;
+	u32 req_flags;
+
+	flow_log("%s() enc:%u\n", __func__, is_encrypt);
+
+	if (ctx->fallback_cipher) {
+		/* Store the cipher tfm and then use the fallback tfm */
+		rctx->old_tfm = tfm;
+		aead_request_set_tfm(req, ctx->fallback_cipher);
+		/*
+		 * Save the callback and chain ourselves in, so we can restore
+		 * the tfm
+		 */
+		rctx->old_complete = req->base.complete;
+		rctx->old_data = req->base.data;
+		req_flags = aead_request_flags(req);
+		aead_request_set_callback(req, req_flags, aead_complete, req);
+		err = is_encrypt ? crypto_aead_encrypt(req) :
+		    crypto_aead_decrypt(req);
+
+		if (err == 0) {
+			/*
+			 * fallback was synchronous (did not return
+			 * -EINPROGRESS). So restore request state here.
+			 */
+			aead_request_set_callback(req, req_flags,
+						  rctx->old_complete, req);
+			req->base.data = rctx->old_data;
+			aead_request_set_tfm(req, aead);
+			flow_log("%s() fallback completed successfully\n\n",
+				 __func__);
+		}
+	} else {
+		err = -EINVAL;
+	}
+
+	return err;
+}
+
+static int aead_enqueue(struct aead_request *req, bool is_encrypt)
+{
+	struct iproc_reqctx_s *rctx = aead_request_ctx(req);
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(aead);
+	int err;
+
+	flow_log("%s() enc:%u\n", __func__, is_encrypt);
+
+	if (req->assoclen > MAX_ASSOC_SIZE) {
+		pr_err
+		    ("%s() Error: associated data too long. (%u > %u bytes)\n",
+		     __func__, req->assoclen, MAX_ASSOC_SIZE);
+		return -EINVAL;
+	}
+
+	rctx->gfp = (req->base.flags & (CRYPTO_TFM_REQ_MAY_BACKLOG |
+		       CRYPTO_TFM_REQ_MAY_SLEEP)) ? GFP_KERNEL : GFP_ATOMIC;
+	rctx->parent = &req->base;
+	rctx->is_encrypt = is_encrypt;
+	rctx->bd_suppress = false;
+	rctx->total_todo = req->cryptlen;
+	rctx->src_sent = 0;
+	rctx->total_sent = 0;
+	rctx->total_received = 0;
+	rctx->is_sw_hmac = false;
+	rctx->ctx = ctx;
+	memset(&rctx->mb_mssg, 0, sizeof(struct brcm_message));
+
+	/* assoc data is at start of src sg */
+	rctx->assoc = req->src;
+
+	/*
+	 * Init current position in src scatterlist to be after assoc data.
+	 * src_skip set to buffer offset where data begins. (Assoc data could
+	 * end in the middle of a buffer.)
+	 */
+	if (spu_sg_at_offset(req->src, req->assoclen, &rctx->src_sg,
+			     &rctx->src_skip) < 0) {
+		pr_err("%s() Error: Unable to find start of src data\n",
+		       __func__);
+		return -EINVAL;
+	}
+
+	rctx->src_nents = 0;
+	rctx->dst_nents = 0;
+	if (req->dst == req->src) {
+		rctx->dst_sg = rctx->src_sg;
+		rctx->dst_skip = rctx->src_skip;
+	} else {
+		/*
+		 * Expect req->dst to have room for assoc data followed by
+		 * output data and ICV, if encrypt. So initialize dst_sg
+		 * to point beyond assoc len offset.
+		 */
+		if (spu_sg_at_offset(req->dst, req->assoclen, &rctx->dst_sg,
+				     &rctx->dst_skip) < 0) {
+			pr_err("%s() Error: Unable to find start of dst data\n",
+			       __func__);
+			return -EINVAL;
+		}
+	}
+
+	if (ctx->cipher.mode == CIPHER_MODE_CBC ||
+	    ctx->cipher.mode == CIPHER_MODE_CTR ||
+	    ctx->cipher.mode == CIPHER_MODE_OFB ||
+	    ctx->cipher.mode == CIPHER_MODE_XTS ||
+	    ctx->cipher.mode == CIPHER_MODE_GCM) {
+		rctx->iv_ctr_len =
+			ctx->salt_len +
+			crypto_aead_ivsize(crypto_aead_reqtfm(req));
+	} else if (ctx->cipher.mode == CIPHER_MODE_CCM) {
+		rctx->iv_ctr_len = CCM_AES_IV_SIZE;
+	} else {
+		rctx->iv_ctr_len = 0;
+	}
+
+	rctx->hash_carry_len = 0;
+
+	flow_log("  src sg: %p\n", req->src);
+	flow_log("  rctx->src_sg: %p, src_skip %u\n",
+		 rctx->src_sg, rctx->src_skip);
+	flow_log("  assoc:  %p, assoclen %u\n", rctx->assoc, req->assoclen);
+	flow_log("  dst sg: %p\n", req->dst);
+	flow_log("  rctx->dst_sg: %p, dst_skip %u\n",
+		 rctx->dst_sg, rctx->dst_skip);
+	flow_log("  iv_ctr_len:%u\n", rctx->iv_ctr_len);
+	flow_dump("  iv: ", req->iv, rctx->iv_ctr_len);
+	flow_log("  authkeylen:%u\n", ctx->authkeylen);
+	flow_log("  is_esp: %s\n", ctx->is_esp ? "yes" : "no");
+
+	if (ctx->max_payload == SPU_MAX_PAYLOAD_INF)
+		flow_log("  max_payload infinite");
+	else
+		flow_log("  max_payload: %u\n", ctx->max_payload);
+
+	if (unlikely(aead_need_fallback(req)))
+		return aead_do_fallback(req, is_encrypt);
+
+	/*
+	 * Do memory allocations for request after fallback check, because if we
+	 * do fallback, we won't call finish_req() to dealloc.
+	 */
+	if (rctx->iv_ctr_len) {
+		if (ctx->salt_len)
+			memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset,
+			       ctx->salt, ctx->salt_len);
+		memcpy(rctx->msg_buf.iv_ctr + ctx->salt_offset + ctx->salt_len,
+		       req->iv,
+		       rctx->iv_ctr_len - ctx->salt_len - ctx->salt_offset);
+	}
+
+	rctx->chan_idx = select_channel();
+	err = handle_aead_req(rctx);
+	if (err != -EINPROGRESS)
+		/* synchronous result */
+		spu_chunk_cleanup(rctx);
+
+	return err;
+}
+
+static int aead_authenc_setkey(struct crypto_aead *cipher,
+			       const u8 *key, unsigned int keylen)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+	struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
+	struct crypto_authenc_keys keys;
+	int ret;
+
+	flow_log("%s() aead:%p key:%p keylen:%u\n", __func__, cipher, key,
+		 keylen);
+	flow_dump("  key: ", key, keylen);
+
+	ret = crypto_authenc_extractkeys(&keys, key, keylen);
+	if (ret)
+		goto badkey;
+
+	if (keys.enckeylen > MAX_KEY_SIZE ||
+	    keys.authkeylen > MAX_KEY_SIZE)
+		goto badkey;
+
+	ctx->enckeylen = keys.enckeylen;
+	ctx->authkeylen = keys.authkeylen;
+
+	memcpy(ctx->enckey, keys.enckey, keys.enckeylen);
+	/* May end up padding auth key. So make sure it's zeroed. */
+	memset(ctx->authkey, 0, sizeof(ctx->authkey));
+	memcpy(ctx->authkey, keys.authkey, keys.authkeylen);
+
+	switch (ctx->alg->cipher_info.alg) {
+	case CIPHER_ALG_DES:
+		if (verify_aead_des_key(cipher, keys.enckey, keys.enckeylen))
+			return -EINVAL;
+
+		ctx->cipher_type = CIPHER_TYPE_DES;
+		break;
+	case CIPHER_ALG_3DES:
+		if (verify_aead_des3_key(cipher, keys.enckey, keys.enckeylen))
+			return -EINVAL;
+
+		ctx->cipher_type = CIPHER_TYPE_3DES;
+		break;
+	case CIPHER_ALG_AES:
+		switch (ctx->enckeylen) {
+		case AES_KEYSIZE_128:
+			ctx->cipher_type = CIPHER_TYPE_AES128;
+			break;
+		case AES_KEYSIZE_192:
+			ctx->cipher_type = CIPHER_TYPE_AES192;
+			break;
+		case AES_KEYSIZE_256:
+			ctx->cipher_type = CIPHER_TYPE_AES256;
+			break;
+		default:
+			goto badkey;
+		}
+		break;
+	default:
+		pr_err("%s() Error: Unknown cipher alg\n", __func__);
+		return -EINVAL;
+	}
+
+	flow_log("  enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
+		 ctx->authkeylen);
+	flow_dump("  enc: ", ctx->enckey, ctx->enckeylen);
+	flow_dump("  auth: ", ctx->authkey, ctx->authkeylen);
+
+	/* setkey the fallback just in case we needto use it */
+	if (ctx->fallback_cipher) {
+		flow_log("  running fallback setkey()\n");
+
+		ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
+		ctx->fallback_cipher->base.crt_flags |=
+		    tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
+		ret = crypto_aead_setkey(ctx->fallback_cipher, key, keylen);
+		if (ret)
+			flow_log("  fallback setkey() returned:%d\n", ret);
+	}
+
+	ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
+							  ctx->enckeylen,
+							  false);
+
+	atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
+
+	return ret;
+
+badkey:
+	ctx->enckeylen = 0;
+	ctx->authkeylen = 0;
+	ctx->digestsize = 0;
+
+	return -EINVAL;
+}
+
+static int aead_gcm_ccm_setkey(struct crypto_aead *cipher,
+			       const u8 *key, unsigned int keylen)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+	struct crypto_tfm *tfm = crypto_aead_tfm(cipher);
+
+	int ret = 0;
+
+	flow_log("%s() keylen:%u\n", __func__, keylen);
+	flow_dump("  key: ", key, keylen);
+
+	if (!ctx->is_esp)
+		ctx->digestsize = keylen;
+
+	ctx->enckeylen = keylen;
+	ctx->authkeylen = 0;
+
+	switch (ctx->enckeylen) {
+	case AES_KEYSIZE_128:
+		ctx->cipher_type = CIPHER_TYPE_AES128;
+		break;
+	case AES_KEYSIZE_192:
+		ctx->cipher_type = CIPHER_TYPE_AES192;
+		break;
+	case AES_KEYSIZE_256:
+		ctx->cipher_type = CIPHER_TYPE_AES256;
+		break;
+	default:
+		goto badkey;
+	}
+
+	memcpy(ctx->enckey, key, ctx->enckeylen);
+
+	flow_log("  enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
+		 ctx->authkeylen);
+	flow_dump("  enc: ", ctx->enckey, ctx->enckeylen);
+	flow_dump("  auth: ", ctx->authkey, ctx->authkeylen);
+
+	/* setkey the fallback just in case we need to use it */
+	if (ctx->fallback_cipher) {
+		flow_log("  running fallback setkey()\n");
+
+		ctx->fallback_cipher->base.crt_flags &= ~CRYPTO_TFM_REQ_MASK;
+		ctx->fallback_cipher->base.crt_flags |=
+		    tfm->crt_flags & CRYPTO_TFM_REQ_MASK;
+		ret = crypto_aead_setkey(ctx->fallback_cipher, key,
+					 keylen + ctx->salt_len);
+		if (ret)
+			flow_log("  fallback setkey() returned:%d\n", ret);
+	}
+
+	ctx->spu_resp_hdr_len = spu->spu_response_hdr_len(ctx->authkeylen,
+							  ctx->enckeylen,
+							  false);
+
+	atomic_inc(&iproc_priv.setkey_cnt[SPU_OP_AEAD]);
+
+	flow_log("  enckeylen:%u authkeylen:%u\n", ctx->enckeylen,
+		 ctx->authkeylen);
+
+	return ret;
+
+badkey:
+	ctx->enckeylen = 0;
+	ctx->authkeylen = 0;
+	ctx->digestsize = 0;
+
+	return -EINVAL;
+}
+
+/**
+ * aead_gcm_esp_setkey() - setkey() operation for ESP variant of GCM AES.
+ * @cipher: AEAD structure
+ * @key:    Key followed by 4 bytes of salt
+ * @keylen: Length of key plus salt, in bytes
+ *
+ * Extracts salt from key and stores it to be prepended to IV on each request.
+ * Digest is always 16 bytes
+ *
+ * Return: Value from generic gcm setkey.
+ */
+static int aead_gcm_esp_setkey(struct crypto_aead *cipher,
+			       const u8 *key, unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+
+	flow_log("%s\n", __func__);
+
+	if (keylen < GCM_ESP_SALT_SIZE)
+		return -EINVAL;
+
+	ctx->salt_len = GCM_ESP_SALT_SIZE;
+	ctx->salt_offset = GCM_ESP_SALT_OFFSET;
+	memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
+	keylen -= GCM_ESP_SALT_SIZE;
+	ctx->digestsize = GCM_ESP_DIGESTSIZE;
+	ctx->is_esp = true;
+	flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
+
+	return aead_gcm_ccm_setkey(cipher, key, keylen);
+}
+
+/**
+ * rfc4543_gcm_esp_setkey() - setkey operation for RFC4543 variant of GCM/GMAC.
+ * @cipher: AEAD structure
+ * @key:    Key followed by 4 bytes of salt
+ * @keylen: Length of key plus salt, in bytes
+ *
+ * Extracts salt from key and stores it to be prepended to IV on each request.
+ * Digest is always 16 bytes
+ *
+ * Return: Value from generic gcm setkey.
+ */
+static int rfc4543_gcm_esp_setkey(struct crypto_aead *cipher,
+				  const u8 *key, unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+
+	flow_log("%s\n", __func__);
+
+	if (keylen < GCM_ESP_SALT_SIZE)
+		return -EINVAL;
+
+	ctx->salt_len = GCM_ESP_SALT_SIZE;
+	ctx->salt_offset = GCM_ESP_SALT_OFFSET;
+	memcpy(ctx->salt, key + keylen - GCM_ESP_SALT_SIZE, GCM_ESP_SALT_SIZE);
+	keylen -= GCM_ESP_SALT_SIZE;
+	ctx->digestsize = GCM_ESP_DIGESTSIZE;
+	ctx->is_esp = true;
+	ctx->is_rfc4543 = true;
+	flow_dump("salt: ", ctx->salt, GCM_ESP_SALT_SIZE);
+
+	return aead_gcm_ccm_setkey(cipher, key, keylen);
+}
+
+/**
+ * aead_ccm_esp_setkey() - setkey() operation for ESP variant of CCM AES.
+ * @cipher: AEAD structure
+ * @key:    Key followed by 4 bytes of salt
+ * @keylen: Length of key plus salt, in bytes
+ *
+ * Extracts salt from key and stores it to be prepended to IV on each request.
+ * Digest is always 16 bytes
+ *
+ * Return: Value from generic ccm setkey.
+ */
+static int aead_ccm_esp_setkey(struct crypto_aead *cipher,
+			       const u8 *key, unsigned int keylen)
+{
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+
+	flow_log("%s\n", __func__);
+
+	if (keylen < CCM_ESP_SALT_SIZE)
+		return -EINVAL;
+
+	ctx->salt_len = CCM_ESP_SALT_SIZE;
+	ctx->salt_offset = CCM_ESP_SALT_OFFSET;
+	memcpy(ctx->salt, key + keylen - CCM_ESP_SALT_SIZE, CCM_ESP_SALT_SIZE);
+	keylen -= CCM_ESP_SALT_SIZE;
+	ctx->is_esp = true;
+	flow_dump("salt: ", ctx->salt, CCM_ESP_SALT_SIZE);
+
+	return aead_gcm_ccm_setkey(cipher, key, keylen);
+}
+
+static int aead_setauthsize(struct crypto_aead *cipher, unsigned int authsize)
+{
+	struct iproc_ctx_s *ctx = crypto_aead_ctx(cipher);
+	int ret = 0;
+
+	flow_log("%s() authkeylen:%u authsize:%u\n",
+		 __func__, ctx->authkeylen, authsize);
+
+	ctx->digestsize = authsize;
+
+	/* setkey the fallback just in case we needto use it */
+	if (ctx->fallback_cipher) {
+		flow_log("  running fallback setauth()\n");
+
+		ret = crypto_aead_setauthsize(ctx->fallback_cipher, authsize);
+		if (ret)
+			flow_log("  fallback setauth() returned:%d\n", ret);
+	}
+
+	return ret;
+}
+
+static int aead_encrypt(struct aead_request *req)
+{
+	flow_log("%s() cryptlen:%u %08x\n", __func__, req->cryptlen,
+		 req->cryptlen);
+	dump_sg(req->src, 0, req->cryptlen + req->assoclen);
+	flow_log("  assoc_len:%u\n", req->assoclen);
+
+	return aead_enqueue(req, true);
+}
+
+static int aead_decrypt(struct aead_request *req)
+{
+	flow_log("%s() cryptlen:%u\n", __func__, req->cryptlen);
+	dump_sg(req->src, 0, req->cryptlen + req->assoclen);
+	flow_log("  assoc_len:%u\n", req->assoclen);
+
+	return aead_enqueue(req, false);
+}
+
+/* ==================== Supported Cipher Algorithms ==================== */
+
+static struct iproc_alg_s driver_algs[] = {
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "gcm(aes)",
+			.cra_driver_name = "gcm-aes-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK
+		 },
+		 .setkey = aead_gcm_ccm_setkey,
+		 .ivsize = GCM_AES_IV_SIZE,
+		.maxauthsize = AES_BLOCK_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_GCM,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_GCM,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "ccm(aes)",
+			.cra_driver_name = "ccm-aes-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK
+		 },
+		 .setkey = aead_gcm_ccm_setkey,
+		 .ivsize = CCM_AES_IV_SIZE,
+		.maxauthsize = AES_BLOCK_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CCM,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_CCM,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "rfc4106(gcm(aes))",
+			.cra_driver_name = "gcm-aes-esp-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK
+		 },
+		 .setkey = aead_gcm_esp_setkey,
+		 .ivsize = GCM_RFC4106_IV_SIZE,
+		 .maxauthsize = AES_BLOCK_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_GCM,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_GCM,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "rfc4309(ccm(aes))",
+			.cra_driver_name = "ccm-aes-esp-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK
+		 },
+		 .setkey = aead_ccm_esp_setkey,
+		 .ivsize = CCM_AES_IV_SIZE,
+		 .maxauthsize = AES_BLOCK_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CCM,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_CCM,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "rfc4543(gcm(aes))",
+			.cra_driver_name = "gmac-aes-esp-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK
+		 },
+		 .setkey = rfc4543_gcm_esp_setkey,
+		 .ivsize = GCM_RFC4106_IV_SIZE,
+		 .maxauthsize = AES_BLOCK_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_GCM,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_GCM,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(md5),cbc(aes))",
+			.cra_driver_name = "authenc-hmac-md5-cbc-aes-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		.ivsize = AES_BLOCK_SIZE,
+		.maxauthsize = MD5_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_MD5,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha1),cbc(aes))",
+			.cra_driver_name = "authenc-hmac-sha1-cbc-aes-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = AES_BLOCK_SIZE,
+		 .maxauthsize = SHA1_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA1,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha256),cbc(aes))",
+			.cra_driver_name = "authenc-hmac-sha256-cbc-aes-iproc",
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = AES_BLOCK_SIZE,
+		 .maxauthsize = SHA256_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA256,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(md5),cbc(des))",
+			.cra_driver_name = "authenc-hmac-md5-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = MD5_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_MD5,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha1),cbc(des))",
+			.cra_driver_name = "authenc-hmac-sha1-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = SHA1_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA1,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha224),cbc(des))",
+			.cra_driver_name = "authenc-hmac-sha224-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = SHA224_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA224,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha256),cbc(des))",
+			.cra_driver_name = "authenc-hmac-sha256-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = SHA256_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA256,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha384),cbc(des))",
+			.cra_driver_name = "authenc-hmac-sha384-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = SHA384_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA384,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha512),cbc(des))",
+			.cra_driver_name = "authenc-hmac-sha512-cbc-des-iproc",
+			.cra_blocksize = DES_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES_BLOCK_SIZE,
+		 .maxauthsize = SHA512_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA512,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(md5),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-md5-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = MD5_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_MD5,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha1),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-sha1-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = SHA1_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA1,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha224),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-sha224-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = SHA224_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA224,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha256),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-sha256-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = SHA256_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA256,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha384),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-sha384-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = SHA384_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA384,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AEAD,
+	 .alg.aead = {
+		 .base = {
+			.cra_name = "authenc(hmac(sha512),cbc(des3_ede))",
+			.cra_driver_name = "authenc-hmac-sha512-cbc-des3-iproc",
+			.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.cra_flags = CRYPTO_ALG_NEED_FALLBACK |
+				     CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_ALLOCATES_MEMORY
+		 },
+		 .setkey = aead_authenc_setkey,
+		 .ivsize = DES3_EDE_BLOCK_SIZE,
+		 .maxauthsize = SHA512_DIGEST_SIZE,
+	 },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA512,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 .auth_first = 0,
+	 },
+
+/* SKCIPHER algorithms. */
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ofb(des)",
+			.base.cra_driver_name = "ofb-des-iproc",
+			.base.cra_blocksize = DES_BLOCK_SIZE,
+			.min_keysize = DES_KEY_SIZE,
+			.max_keysize = DES_KEY_SIZE,
+			.ivsize = DES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_OFB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "cbc(des)",
+			.base.cra_driver_name = "cbc-des-iproc",
+			.base.cra_blocksize = DES_BLOCK_SIZE,
+			.min_keysize = DES_KEY_SIZE,
+			.max_keysize = DES_KEY_SIZE,
+			.ivsize = DES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ecb(des)",
+			.base.cra_driver_name = "ecb-des-iproc",
+			.base.cra_blocksize = DES_BLOCK_SIZE,
+			.min_keysize = DES_KEY_SIZE,
+			.max_keysize = DES_KEY_SIZE,
+			.ivsize = 0,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_DES,
+			 .mode = CIPHER_MODE_ECB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ofb(des3_ede)",
+			.base.cra_driver_name = "ofb-des3-iproc",
+			.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.min_keysize = DES3_EDE_KEY_SIZE,
+			.max_keysize = DES3_EDE_KEY_SIZE,
+			.ivsize = DES3_EDE_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_OFB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "cbc(des3_ede)",
+			.base.cra_driver_name = "cbc-des3-iproc",
+			.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.min_keysize = DES3_EDE_KEY_SIZE,
+			.max_keysize = DES3_EDE_KEY_SIZE,
+			.ivsize = DES3_EDE_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ecb(des3_ede)",
+			.base.cra_driver_name = "ecb-des3-iproc",
+			.base.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+			.min_keysize = DES3_EDE_KEY_SIZE,
+			.max_keysize = DES3_EDE_KEY_SIZE,
+			.ivsize = 0,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_3DES,
+			 .mode = CIPHER_MODE_ECB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ofb(aes)",
+			.base.cra_driver_name = "ofb-aes-iproc",
+			.base.cra_blocksize = AES_BLOCK_SIZE,
+			.min_keysize = AES_MIN_KEY_SIZE,
+			.max_keysize = AES_MAX_KEY_SIZE,
+			.ivsize = AES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_OFB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "cbc(aes)",
+			.base.cra_driver_name = "cbc-aes-iproc",
+			.base.cra_blocksize = AES_BLOCK_SIZE,
+			.min_keysize = AES_MIN_KEY_SIZE,
+			.max_keysize = AES_MAX_KEY_SIZE,
+			.ivsize = AES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CBC,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ecb(aes)",
+			.base.cra_driver_name = "ecb-aes-iproc",
+			.base.cra_blocksize = AES_BLOCK_SIZE,
+			.min_keysize = AES_MIN_KEY_SIZE,
+			.max_keysize = AES_MAX_KEY_SIZE,
+			.ivsize = 0,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_ECB,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "ctr(aes)",
+			.base.cra_driver_name = "ctr-aes-iproc",
+			.base.cra_blocksize = AES_BLOCK_SIZE,
+			.min_keysize = AES_MIN_KEY_SIZE,
+			.max_keysize = AES_MAX_KEY_SIZE,
+			.ivsize = AES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_CTR,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+{
+	 .type = CRYPTO_ALG_TYPE_SKCIPHER,
+	 .alg.skcipher = {
+			.base.cra_name = "xts(aes)",
+			.base.cra_driver_name = "xts-aes-iproc",
+			.base.cra_blocksize = AES_BLOCK_SIZE,
+			.min_keysize = 2 * AES_MIN_KEY_SIZE,
+			.max_keysize = 2 * AES_MAX_KEY_SIZE,
+			.ivsize = AES_BLOCK_SIZE,
+			},
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_AES,
+			 .mode = CIPHER_MODE_XTS,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_NONE,
+		       .mode = HASH_MODE_NONE,
+		       },
+	 },
+
+/* AHASH algorithms. */
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = MD5_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "md5",
+				    .cra_driver_name = "md5-iproc",
+				    .cra_blocksize = MD5_BLOCK_WORDS * 4,
+				    .cra_flags = CRYPTO_ALG_ASYNC |
+						 CRYPTO_ALG_ALLOCATES_MEMORY,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_MD5,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = MD5_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(md5)",
+				    .cra_driver_name = "hmac-md5-iproc",
+				    .cra_blocksize = MD5_BLOCK_WORDS * 4,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_MD5,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA1_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha1",
+				    .cra_driver_name = "sha1-iproc",
+				    .cra_blocksize = SHA1_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA1,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA1_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha1)",
+				    .cra_driver_name = "hmac-sha1-iproc",
+				    .cra_blocksize = SHA1_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA1,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+			.halg.digestsize = SHA224_DIGEST_SIZE,
+			.halg.base = {
+				    .cra_name = "sha224",
+				    .cra_driver_name = "sha224-iproc",
+				    .cra_blocksize = SHA224_BLOCK_SIZE,
+			}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA224,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA224_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha224)",
+				    .cra_driver_name = "hmac-sha224-iproc",
+				    .cra_blocksize = SHA224_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA224,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA256_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha256",
+				    .cra_driver_name = "sha256-iproc",
+				    .cra_blocksize = SHA256_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA256,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA256_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha256)",
+				    .cra_driver_name = "hmac-sha256-iproc",
+				    .cra_blocksize = SHA256_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA256,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	.type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA384_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha384",
+				    .cra_driver_name = "sha384-iproc",
+				    .cra_blocksize = SHA384_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA384,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA384_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha384)",
+				    .cra_driver_name = "hmac-sha384-iproc",
+				    .cra_blocksize = SHA384_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA384,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA512_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha512",
+				    .cra_driver_name = "sha512-iproc",
+				    .cra_blocksize = SHA512_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA512,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA512_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha512)",
+				    .cra_driver_name = "hmac-sha512-iproc",
+				    .cra_blocksize = SHA512_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA512,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_224_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha3-224",
+				    .cra_driver_name = "sha3-224-iproc",
+				    .cra_blocksize = SHA3_224_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_224,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_224_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha3-224)",
+				    .cra_driver_name = "hmac-sha3-224-iproc",
+				    .cra_blocksize = SHA3_224_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_224,
+		       .mode = HASH_MODE_HMAC
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_256_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha3-256",
+				    .cra_driver_name = "sha3-256-iproc",
+				    .cra_blocksize = SHA3_256_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_256,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_256_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha3-256)",
+				    .cra_driver_name = "hmac-sha3-256-iproc",
+				    .cra_blocksize = SHA3_256_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_256,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_384_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha3-384",
+				    .cra_driver_name = "sha3-384-iproc",
+				    .cra_blocksize = SHA3_224_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_384,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_384_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha3-384)",
+				    .cra_driver_name = "hmac-sha3-384-iproc",
+				    .cra_blocksize = SHA3_384_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_384,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_512_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "sha3-512",
+				    .cra_driver_name = "sha3-512-iproc",
+				    .cra_blocksize = SHA3_512_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_512,
+		       .mode = HASH_MODE_HASH,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = SHA3_512_DIGEST_SIZE,
+		      .halg.base = {
+				    .cra_name = "hmac(sha3-512)",
+				    .cra_driver_name = "hmac-sha3-512-iproc",
+				    .cra_blocksize = SHA3_512_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_SHA3_512,
+		       .mode = HASH_MODE_HMAC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = AES_BLOCK_SIZE,
+		      .halg.base = {
+				    .cra_name = "xcbc(aes)",
+				    .cra_driver_name = "xcbc-aes-iproc",
+				    .cra_blocksize = AES_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_XCBC,
+		       },
+	 },
+	{
+	 .type = CRYPTO_ALG_TYPE_AHASH,
+	 .alg.hash = {
+		      .halg.digestsize = AES_BLOCK_SIZE,
+		      .halg.base = {
+				    .cra_name = "cmac(aes)",
+				    .cra_driver_name = "cmac-aes-iproc",
+				    .cra_blocksize = AES_BLOCK_SIZE,
+				}
+		      },
+	 .cipher_info = {
+			 .alg = CIPHER_ALG_NONE,
+			 .mode = CIPHER_MODE_NONE,
+			 },
+	 .auth_info = {
+		       .alg = HASH_ALG_AES,
+		       .mode = HASH_MODE_CMAC,
+		       },
+	 },
+};
+
+static int generic_cra_init(struct crypto_tfm *tfm,
+			    struct iproc_alg_s *cipher_alg)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
+	unsigned int blocksize = crypto_tfm_alg_blocksize(tfm);
+
+	flow_log("%s()\n", __func__);
+
+	ctx->alg = cipher_alg;
+	ctx->cipher = cipher_alg->cipher_info;
+	ctx->auth = cipher_alg->auth_info;
+	ctx->auth_first = cipher_alg->auth_first;
+	ctx->max_payload = spu->spu_ctx_max_payload(ctx->cipher.alg,
+						    ctx->cipher.mode,
+						    blocksize);
+	ctx->fallback_cipher = NULL;
+
+	ctx->enckeylen = 0;
+	ctx->authkeylen = 0;
+
+	atomic_inc(&iproc_priv.stream_count);
+	atomic_inc(&iproc_priv.session_count);
+
+	return 0;
+}
+
+static int skcipher_init_tfm(struct crypto_skcipher *skcipher)
+{
+	struct crypto_tfm *tfm = crypto_skcipher_tfm(skcipher);
+	struct skcipher_alg *alg = crypto_skcipher_alg(skcipher);
+	struct iproc_alg_s *cipher_alg;
+
+	flow_log("%s()\n", __func__);
+
+	crypto_skcipher_set_reqsize(skcipher, sizeof(struct iproc_reqctx_s));
+
+	cipher_alg = container_of(alg, struct iproc_alg_s, alg.skcipher);
+	return generic_cra_init(tfm, cipher_alg);
+}
+
+static int ahash_cra_init(struct crypto_tfm *tfm)
+{
+	int err;
+	struct crypto_alg *alg = tfm->__crt_alg;
+	struct iproc_alg_s *cipher_alg;
+
+	cipher_alg = container_of(__crypto_ahash_alg(alg), struct iproc_alg_s,
+				  alg.hash);
+
+	err = generic_cra_init(tfm, cipher_alg);
+	flow_log("%s()\n", __func__);
+
+	/*
+	 * export state size has to be < 512 bytes. So don't include msg bufs
+	 * in state size.
+	 */
+	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
+				 sizeof(struct iproc_reqctx_s));
+
+	return err;
+}
+
+static int aead_cra_init(struct crypto_aead *aead)
+{
+	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
+	struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_alg *alg = tfm->__crt_alg;
+	struct aead_alg *aalg = container_of(alg, struct aead_alg, base);
+	struct iproc_alg_s *cipher_alg = container_of(aalg, struct iproc_alg_s,
+						      alg.aead);
+
+	int err = generic_cra_init(tfm, cipher_alg);
+
+	flow_log("%s()\n", __func__);
+
+	crypto_aead_set_reqsize(aead, sizeof(struct iproc_reqctx_s));
+	ctx->is_esp = false;
+	ctx->salt_len = 0;
+	ctx->salt_offset = 0;
+
+	/* random first IV */
+	get_random_bytes(ctx->iv, MAX_IV_SIZE);
+	flow_dump("  iv: ", ctx->iv, MAX_IV_SIZE);
+
+	if (!err) {
+		if (alg->cra_flags & CRYPTO_ALG_NEED_FALLBACK) {
+			flow_log("%s() creating fallback cipher\n", __func__);
+
+			ctx->fallback_cipher =
+			    crypto_alloc_aead(alg->cra_name, 0,
+					      CRYPTO_ALG_ASYNC |
+					      CRYPTO_ALG_NEED_FALLBACK);
+			if (IS_ERR(ctx->fallback_cipher)) {
+				pr_err("%s() Error: failed to allocate fallback for %s\n",
+				       __func__, alg->cra_name);
+				return PTR_ERR(ctx->fallback_cipher);
+			}
+		}
+	}
+
+	return err;
+}
+
+static void generic_cra_exit(struct crypto_tfm *tfm)
+{
+	atomic_dec(&iproc_priv.session_count);
+}
+
+static void skcipher_exit_tfm(struct crypto_skcipher *tfm)
+{
+	generic_cra_exit(crypto_skcipher_tfm(tfm));
+}
+
+static void aead_cra_exit(struct crypto_aead *aead)
+{
+	struct crypto_tfm *tfm = crypto_aead_tfm(aead);
+	struct iproc_ctx_s *ctx = crypto_tfm_ctx(tfm);
+
+	generic_cra_exit(tfm);
+
+	if (ctx->fallback_cipher) {
+		crypto_free_aead(ctx->fallback_cipher);
+		ctx->fallback_cipher = NULL;
+	}
+}
+
+/**
+ * spu_functions_register() - Specify hardware-specific SPU functions based on
+ * SPU type read from device tree.
+ * @dev:	device structure
+ * @spu_type:	SPU hardware generation
+ * @spu_subtype: SPU hardware version
+ */
+static void spu_functions_register(struct device *dev,
+				   enum spu_spu_type spu_type,
+				   enum spu_spu_subtype spu_subtype)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+
+	if (spu_type == SPU_TYPE_SPUM) {
+		dev_dbg(dev, "Registering SPUM functions");
+		spu->spu_dump_msg_hdr = spum_dump_msg_hdr;
+		spu->spu_payload_length = spum_payload_length;
+		spu->spu_response_hdr_len = spum_response_hdr_len;
+		spu->spu_hash_pad_len = spum_hash_pad_len;
+		spu->spu_gcm_ccm_pad_len = spum_gcm_ccm_pad_len;
+		spu->spu_assoc_resp_len = spum_assoc_resp_len;
+		spu->spu_aead_ivlen = spum_aead_ivlen;
+		spu->spu_hash_type = spum_hash_type;
+		spu->spu_digest_size = spum_digest_size;
+		spu->spu_create_request = spum_create_request;
+		spu->spu_cipher_req_init = spum_cipher_req_init;
+		spu->spu_cipher_req_finish = spum_cipher_req_finish;
+		spu->spu_request_pad = spum_request_pad;
+		spu->spu_tx_status_len = spum_tx_status_len;
+		spu->spu_rx_status_len = spum_rx_status_len;
+		spu->spu_status_process = spum_status_process;
+		spu->spu_xts_tweak_in_payload = spum_xts_tweak_in_payload;
+		spu->spu_ccm_update_iv = spum_ccm_update_iv;
+		spu->spu_wordalign_padlen = spum_wordalign_padlen;
+		if (spu_subtype == SPU_SUBTYPE_SPUM_NS2)
+			spu->spu_ctx_max_payload = spum_ns2_ctx_max_payload;
+		else
+			spu->spu_ctx_max_payload = spum_nsp_ctx_max_payload;
+	} else {
+		dev_dbg(dev, "Registering SPU2 functions");
+		spu->spu_dump_msg_hdr = spu2_dump_msg_hdr;
+		spu->spu_ctx_max_payload = spu2_ctx_max_payload;
+		spu->spu_payload_length = spu2_payload_length;
+		spu->spu_response_hdr_len = spu2_response_hdr_len;
+		spu->spu_hash_pad_len = spu2_hash_pad_len;
+		spu->spu_gcm_ccm_pad_len = spu2_gcm_ccm_pad_len;
+		spu->spu_assoc_resp_len = spu2_assoc_resp_len;
+		spu->spu_aead_ivlen = spu2_aead_ivlen;
+		spu->spu_hash_type = spu2_hash_type;
+		spu->spu_digest_size = spu2_digest_size;
+		spu->spu_create_request = spu2_create_request;
+		spu->spu_cipher_req_init = spu2_cipher_req_init;
+		spu->spu_cipher_req_finish = spu2_cipher_req_finish;
+		spu->spu_request_pad = spu2_request_pad;
+		spu->spu_tx_status_len = spu2_tx_status_len;
+		spu->spu_rx_status_len = spu2_rx_status_len;
+		spu->spu_status_process = spu2_status_process;
+		spu->spu_xts_tweak_in_payload = spu2_xts_tweak_in_payload;
+		spu->spu_ccm_update_iv = spu2_ccm_update_iv;
+		spu->spu_wordalign_padlen = spu2_wordalign_padlen;
+	}
+}
+
+/**
+ * spu_mb_init() - Initialize mailbox client. Request ownership of a mailbox
+ * channel for the SPU being probed.
+ * @dev:  SPU driver device structure
+ *
+ * Return: 0 if successful
+ *	   < 0 otherwise
+ */
+static int spu_mb_init(struct device *dev)
+{
+	struct mbox_client *mcl = &iproc_priv.mcl;
+	int err, i;
+
+	iproc_priv.mbox = devm_kcalloc(dev, iproc_priv.spu.num_chan,
+				  sizeof(struct mbox_chan *), GFP_KERNEL);
+	if (!iproc_priv.mbox)
+		return -ENOMEM;
+
+	mcl->dev = dev;
+	mcl->tx_block = false;
+	mcl->tx_tout = 0;
+	mcl->knows_txdone = true;
+	mcl->rx_callback = spu_rx_callback;
+	mcl->tx_done = NULL;
+
+	for (i = 0; i < iproc_priv.spu.num_chan; i++) {
+		iproc_priv.mbox[i] = mbox_request_channel(mcl, i);
+		if (IS_ERR(iproc_priv.mbox[i])) {
+			err = PTR_ERR(iproc_priv.mbox[i]);
+			dev_err(dev,
+				"Mbox channel %d request failed with err %d",
+				i, err);
+			iproc_priv.mbox[i] = NULL;
+			goto free_channels;
+		}
+	}
+
+	return 0;
+free_channels:
+	for (i = 0; i < iproc_priv.spu.num_chan; i++) {
+		if (iproc_priv.mbox[i])
+			mbox_free_channel(iproc_priv.mbox[i]);
+	}
+
+	return err;
+}
+
+static void spu_mb_release(struct platform_device *pdev)
+{
+	int i;
+
+	for (i = 0; i < iproc_priv.spu.num_chan; i++)
+		mbox_free_channel(iproc_priv.mbox[i]);
+}
+
+static void spu_counters_init(void)
+{
+	int i;
+	int j;
+
+	atomic_set(&iproc_priv.session_count, 0);
+	atomic_set(&iproc_priv.stream_count, 0);
+	atomic_set(&iproc_priv.next_chan, (int)iproc_priv.spu.num_chan);
+	atomic64_set(&iproc_priv.bytes_in, 0);
+	atomic64_set(&iproc_priv.bytes_out, 0);
+	for (i = 0; i < SPU_OP_NUM; i++) {
+		atomic_set(&iproc_priv.op_counts[i], 0);
+		atomic_set(&iproc_priv.setkey_cnt[i], 0);
+	}
+	for (i = 0; i < CIPHER_ALG_LAST; i++)
+		for (j = 0; j < CIPHER_MODE_LAST; j++)
+			atomic_set(&iproc_priv.cipher_cnt[i][j], 0);
+
+	for (i = 0; i < HASH_ALG_LAST; i++) {
+		atomic_set(&iproc_priv.hash_cnt[i], 0);
+		atomic_set(&iproc_priv.hmac_cnt[i], 0);
+	}
+	for (i = 0; i < AEAD_TYPE_LAST; i++)
+		atomic_set(&iproc_priv.aead_cnt[i], 0);
+
+	atomic_set(&iproc_priv.mb_no_spc, 0);
+	atomic_set(&iproc_priv.mb_send_fail, 0);
+	atomic_set(&iproc_priv.bad_icv, 0);
+}
+
+static int spu_register_skcipher(struct iproc_alg_s *driver_alg)
+{
+	struct skcipher_alg *crypto = &driver_alg->alg.skcipher;
+	int err;
+
+	crypto->base.cra_module = THIS_MODULE;
+	crypto->base.cra_priority = cipher_pri;
+	crypto->base.cra_alignmask = 0;
+	crypto->base.cra_ctxsize = sizeof(struct iproc_ctx_s);
+	crypto->base.cra_flags = CRYPTO_ALG_ASYNC |
+				 CRYPTO_ALG_ALLOCATES_MEMORY |
+				 CRYPTO_ALG_KERN_DRIVER_ONLY;
+
+	crypto->init = skcipher_init_tfm;
+	crypto->exit = skcipher_exit_tfm;
+	crypto->setkey = skcipher_setkey;
+	crypto->encrypt = skcipher_encrypt;
+	crypto->decrypt = skcipher_decrypt;
+
+	err = crypto_register_skcipher(crypto);
+	/* Mark alg as having been registered, if successful */
+	if (err == 0)
+		driver_alg->registered = true;
+	pr_debug("  registered skcipher %s\n", crypto->base.cra_driver_name);
+	return err;
+}
+
+static int spu_register_ahash(struct iproc_alg_s *driver_alg)
+{
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct ahash_alg *hash = &driver_alg->alg.hash;
+	int err;
+
+	/* AES-XCBC is the only AES hash type currently supported on SPU-M */
+	if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&
+	    (driver_alg->auth_info.mode != HASH_MODE_XCBC) &&
+	    (spu->spu_type == SPU_TYPE_SPUM))
+		return 0;
+
+	/* SHA3 algorithm variants are not registered for SPU-M or SPU2. */
+	if ((driver_alg->auth_info.alg >= HASH_ALG_SHA3_224) &&
+	    (spu->spu_subtype != SPU_SUBTYPE_SPU2_V2))
+		return 0;
+
+	hash->halg.base.cra_module = THIS_MODULE;
+	hash->halg.base.cra_priority = hash_pri;
+	hash->halg.base.cra_alignmask = 0;
+	hash->halg.base.cra_ctxsize = sizeof(struct iproc_ctx_s);
+	hash->halg.base.cra_init = ahash_cra_init;
+	hash->halg.base.cra_exit = generic_cra_exit;
+	hash->halg.base.cra_flags = CRYPTO_ALG_ASYNC |
+				    CRYPTO_ALG_ALLOCATES_MEMORY;
+	hash->halg.statesize = sizeof(struct spu_hash_export_s);
+
+	if (driver_alg->auth_info.mode != HASH_MODE_HMAC) {
+		hash->init = ahash_init;
+		hash->update = ahash_update;
+		hash->final = ahash_final;
+		hash->finup = ahash_finup;
+		hash->digest = ahash_digest;
+		if ((driver_alg->auth_info.alg == HASH_ALG_AES) &&
+		    ((driver_alg->auth_info.mode == HASH_MODE_XCBC) ||
+		    (driver_alg->auth_info.mode == HASH_MODE_CMAC))) {
+			hash->setkey = ahash_setkey;
+		}
+	} else {
+		hash->setkey = ahash_hmac_setkey;
+		hash->init = ahash_hmac_init;
+		hash->update = ahash_hmac_update;
+		hash->final = ahash_hmac_final;
+		hash->finup = ahash_hmac_finup;
+		hash->digest = ahash_hmac_digest;
+	}
+	hash->export = ahash_export;
+	hash->import = ahash_import;
+
+	err = crypto_register_ahash(hash);
+	/* Mark alg as having been registered, if successful */
+	if (err == 0)
+		driver_alg->registered = true;
+	pr_debug("  registered ahash %s\n",
+		 hash->halg.base.cra_driver_name);
+	return err;
+}
+
+static int spu_register_aead(struct iproc_alg_s *driver_alg)
+{
+	struct aead_alg *aead = &driver_alg->alg.aead;
+	int err;
+
+	aead->base.cra_module = THIS_MODULE;
+	aead->base.cra_priority = aead_pri;
+	aead->base.cra_alignmask = 0;
+	aead->base.cra_ctxsize = sizeof(struct iproc_ctx_s);
+
+	aead->base.cra_flags |= CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY;
+	/* setkey set in alg initialization */
+	aead->setauthsize = aead_setauthsize;
+	aead->encrypt = aead_encrypt;
+	aead->decrypt = aead_decrypt;
+	aead->init = aead_cra_init;
+	aead->exit = aead_cra_exit;
+
+	err = crypto_register_aead(aead);
+	/* Mark alg as having been registered, if successful */
+	if (err == 0)
+		driver_alg->registered = true;
+	pr_debug("  registered aead %s\n", aead->base.cra_driver_name);
+	return err;
+}
+
+/* register crypto algorithms the device supports */
+static int spu_algs_register(struct device *dev)
+{
+	int i, j;
+	int err;
+
+	for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
+		switch (driver_algs[i].type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			err = spu_register_skcipher(&driver_algs[i]);
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			err = spu_register_ahash(&driver_algs[i]);
+			break;
+		case CRYPTO_ALG_TYPE_AEAD:
+			err = spu_register_aead(&driver_algs[i]);
+			break;
+		default:
+			dev_err(dev,
+				"iproc-crypto: unknown alg type: %d",
+				driver_algs[i].type);
+			err = -EINVAL;
+		}
+
+		if (err) {
+			dev_err(dev, "alg registration failed with error %d\n",
+				err);
+			goto err_algs;
+		}
+	}
+
+	return 0;
+
+err_algs:
+	for (j = 0; j < i; j++) {
+		/* Skip any algorithm not registered */
+		if (!driver_algs[j].registered)
+			continue;
+		switch (driver_algs[j].type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			crypto_unregister_skcipher(&driver_algs[j].alg.skcipher);
+			driver_algs[j].registered = false;
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			crypto_unregister_ahash(&driver_algs[j].alg.hash);
+			driver_algs[j].registered = false;
+			break;
+		case CRYPTO_ALG_TYPE_AEAD:
+			crypto_unregister_aead(&driver_algs[j].alg.aead);
+			driver_algs[j].registered = false;
+			break;
+		}
+	}
+	return err;
+}
+
+/* ==================== Kernel Platform API ==================== */
+
+static struct spu_type_subtype spum_ns2_types = {
+	SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NS2
+};
+
+static struct spu_type_subtype spum_nsp_types = {
+	SPU_TYPE_SPUM, SPU_SUBTYPE_SPUM_NSP
+};
+
+static struct spu_type_subtype spu2_types = {
+	SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V1
+};
+
+static struct spu_type_subtype spu2_v2_types = {
+	SPU_TYPE_SPU2, SPU_SUBTYPE_SPU2_V2
+};
+
+static const struct of_device_id bcm_spu_dt_ids[] = {
+	{
+		.compatible = "brcm,spum-crypto",
+		.data = &spum_ns2_types,
+	},
+	{
+		.compatible = "brcm,spum-nsp-crypto",
+		.data = &spum_nsp_types,
+	},
+	{
+		.compatible = "brcm,spu2-crypto",
+		.data = &spu2_types,
+	},
+	{
+		.compatible = "brcm,spu2-v2-crypto",
+		.data = &spu2_v2_types,
+	},
+	{ /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, bcm_spu_dt_ids);
+
+static int spu_dt_read(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct spu_hw *spu = &iproc_priv.spu;
+	struct resource *spu_ctrl_regs;
+	const struct spu_type_subtype *matched_spu_type;
+	struct device_node *dn = pdev->dev.of_node;
+	int err, i;
+
+	/* Count number of mailbox channels */
+	spu->num_chan = of_count_phandle_with_args(dn, "mboxes", "#mbox-cells");
+
+	matched_spu_type = of_device_get_match_data(dev);
+	if (!matched_spu_type) {
+		dev_err(dev, "Failed to match device\n");
+		return -ENODEV;
+	}
+
+	spu->spu_type = matched_spu_type->type;
+	spu->spu_subtype = matched_spu_type->subtype;
+
+	for (i = 0; (i < MAX_SPUS) && ((spu_ctrl_regs =
+		platform_get_resource(pdev, IORESOURCE_MEM, i)) != NULL); i++) {
+
+		spu->reg_vbase[i] = devm_ioremap_resource(dev, spu_ctrl_regs);
+		if (IS_ERR(spu->reg_vbase[i])) {
+			err = PTR_ERR(spu->reg_vbase[i]);
+			dev_err(dev, "Failed to map registers: %d\n",
+				err);
+			spu->reg_vbase[i] = NULL;
+			return err;
+		}
+	}
+	spu->num_spu = i;
+	dev_dbg(dev, "Device has %d SPUs", spu->num_spu);
+
+	return 0;
+}
+
+static int bcm_spu_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct spu_hw *spu = &iproc_priv.spu;
+	int err;
+
+	iproc_priv.pdev  = pdev;
+	platform_set_drvdata(iproc_priv.pdev,
+			     &iproc_priv);
+
+	err = spu_dt_read(pdev);
+	if (err < 0)
+		goto failure;
+
+	err = spu_mb_init(dev);
+	if (err < 0)
+		goto failure;
+
+	if (spu->spu_type == SPU_TYPE_SPUM)
+		iproc_priv.bcm_hdr_len = 8;
+	else if (spu->spu_type == SPU_TYPE_SPU2)
+		iproc_priv.bcm_hdr_len = 0;
+
+	spu_functions_register(dev, spu->spu_type, spu->spu_subtype);
+
+	spu_counters_init();
+
+	spu_setup_debugfs();
+
+	err = spu_algs_register(dev);
+	if (err < 0)
+		goto fail_reg;
+
+	return 0;
+
+fail_reg:
+	spu_free_debugfs();
+failure:
+	spu_mb_release(pdev);
+	dev_err(dev, "%s failed with error %d.\n", __func__, err);
+
+	return err;
+}
+
+static int bcm_spu_remove(struct platform_device *pdev)
+{
+	int i;
+	struct device *dev = &pdev->dev;
+	char *cdn;
+
+	for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
+		/*
+		 * Not all algorithms were registered, depending on whether
+		 * hardware is SPU or SPU2.  So here we make sure to skip
+		 * those algorithms that were not previously registered.
+		 */
+		if (!driver_algs[i].registered)
+			continue;
+
+		switch (driver_algs[i].type) {
+		case CRYPTO_ALG_TYPE_SKCIPHER:
+			crypto_unregister_skcipher(&driver_algs[i].alg.skcipher);
+			dev_dbg(dev, "  unregistered cipher %s\n",
+				driver_algs[i].alg.skcipher.base.cra_driver_name);
+			driver_algs[i].registered = false;
+			break;
+		case CRYPTO_ALG_TYPE_AHASH:
+			crypto_unregister_ahash(&driver_algs[i].alg.hash);
+			cdn = driver_algs[i].alg.hash.halg.base.cra_driver_name;
+			dev_dbg(dev, "  unregistered hash %s\n", cdn);
+			driver_algs[i].registered = false;
+			break;
+		case CRYPTO_ALG_TYPE_AEAD:
+			crypto_unregister_aead(&driver_algs[i].alg.aead);
+			dev_dbg(dev, "  unregistered aead %s\n",
+				driver_algs[i].alg.aead.base.cra_driver_name);
+			driver_algs[i].registered = false;
+			break;
+		}
+	}
+	spu_free_debugfs();
+	spu_mb_release(pdev);
+	return 0;
+}
+
+/* ===== Kernel Module API ===== */
+
+static struct platform_driver bcm_spu_pdriver = {
+	.driver = {
+		   .name = "brcm-spu-crypto",
+		   .of_match_table = of_match_ptr(bcm_spu_dt_ids),
+		   },
+	.probe = bcm_spu_probe,
+	.remove = bcm_spu_remove,
+};
+module_platform_driver(bcm_spu_pdriver);
+
+MODULE_AUTHOR("Rob Rice <rob.rice@broadcom.com>");
+MODULE_DESCRIPTION("Broadcom symmetric crypto offload driver");
+MODULE_LICENSE("GPL v2");