Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto update from Herbert Xu:
 "API:

   - Crypto self tests can now be disabled at boot/run time.
   - Add async support to algif_aead.

  Algorithms:

   - A large number of fixes to MPI from Nicolai Stange.
   - Performance improvement for HMAC DRBG.

  Drivers:

   - Use generic crypto engine in omap-des.
   - Merge ppc4xx-rng and crypto4xx drivers.
   - Fix lockups in sun4i-ss driver by disabling IRQs.
   - Add DMA engine support to ccp.
   - Reenable talitos hash algorithms.
   - Add support for Hisilicon SoC RNG.
   - Add basic crypto driver for the MXC SCC.

  Others:

   - Do not allocate crypto hash tfm in NORECLAIM context in ecryptfs"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (77 commits)
  crypto: qat - change the adf_ctl_stop_devices to void
  crypto: caam - fix caam_jr_alloc() ret code
  crypto: vmx - comply with ABIs that specify vrsave as reserved.
  crypto: testmgr - Add a flag allowing the self-tests to be disabled at runtime.
  crypto: ccp - constify ccp_actions structure
  crypto: marvell/cesa - Use dma_pool_zalloc
  crypto: qat - make adf_vf_isr.c dependant on IOV config
  crypto: qat - Fix typo in comments
  lib: asn1_decoder - add MODULE_LICENSE("GPL")
  crypto: omap-sham - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Use dma_request_chan() for requesting DMA channel
  crypto: omap-aes - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Integrate with the crypto engine framework
  crypto: s5p-sss - fix incorrect usage of scatterlists api
  crypto: s5p-sss - Fix missed interrupts when working with 8 kB blocks
  crypto: s5p-sss - Use common BIT macro
  crypto: mxc-scc - fix unwinding in mxc_scc_crypto_register()
  crypto: mxc-scc - signedness bugs in mxc_scc_ablkcipher_req_init()
  crypto: talitos - fix ahash algorithms registration
  crypto: ccp - Ensure all dependencies are specified
  ...

Documentation/DocBook/crypto-API.tmpl

@@ -1936,9 +1936,9 @@ static int test_skcipher(void)
 	}
 
 	req = skcipher_request_alloc(skcipher, GFP_KERNEL);
-	if (IS_ERR(req)) {
-		pr_info("could not allocate request queue\n");
-		ret = PTR_ERR(req);
+	if (!req) {
+		pr_info("could not allocate skcipher request\n");
+		ret = -ENOMEM;
 		goto out;
 	}
 

Documentation/devicetree/bindings/crypto/fsl-imx-scc.txt

@@ -0,0 +1,21 @@
+Freescale Security Controller (SCC)
+
+Required properties:
+- compatible : Should be "fsl,imx25-scc".
+- reg : Should contain register location and length.
+- interrupts : Should contain interrupt numbers for SCM IRQ and SMN IRQ.
+- interrupt-names : Should specify the names "scm" and "smn" for the
+		    SCM IRQ and SMN IRQ.
+- clocks: Should contain the clock driving the SCC core.
+- clock-names: Should be set to "ipg".
+
+Example:
+
+	scc: crypto@53fac000 {
+		compatible = "fsl,imx25-scc";
+		reg = <0x53fac000 0x4000>;
+		clocks = <&clks 111>;
+		clock-names = "ipg";
+		interrupts = <49>, <50>;
+		interrupt-names = "scm", "smn";
+	};

Documentation/devicetree/bindings/crypto/samsung-sss.txt

@@ -23,10 +23,8 @@ Required properties:
   - "samsung,exynos4210-secss" for Exynos4210, Exynos4212, Exynos4412, Exynos5250,
 		Exynos5260 and Exynos5420 SoCs.
 - reg : Offset and length of the register set for the module
-- interrupts : interrupt specifiers of SSS module interrupts, should contain
-		following entries:
-		- first : feed control interrupt (required for all variants),
-		- second : hash interrupt (required only for samsung,s5pv210-secss).
+- interrupts : interrupt specifiers of SSS module interrupts (one feed
+		control interrupt).
 
 - clocks : list of clock phandle and specifier pairs for all clocks  listed in
 		clock-names property.

Documentation/devicetree/bindings/rng/hisi-rng.txt

@@ -0,0 +1,12 @@
+Hisilicon Random Number Generator
+
+Required properties:
+- compatible : Should be "hisilicon,hip04-rng" or "hisilicon,hip05-rng"
+- reg : Offset and length of the register set of this block
+
+Example:
+
+rng@d1010000 {
+	compatible = "hisilicon,hip05-rng";
+	reg = <0xd1010000 0x100>;
+};

Documentation/kernel-parameters.txt

@@ -838,6 +838,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			It will be ignored when crashkernel=X,high is not used
 			or memory reserved is below 4G.
 
+	cryptomgr.notests
+                        [KNL] Disable crypto self-tests
+
 	cs89x0_dma=	[HW,NET]
 			Format: <dma>
 

MAINTAINERS

@@ -627,6 +627,7 @@ F:	include/linux/altera_jtaguart.h
 
 AMD CRYPTOGRAPHIC COPROCESSOR (CCP) DRIVER
 M:	Tom Lendacky <thomas.lendacky@amd.com>
+M:	Gary Hook <gary.hook@amd.com>
 L:	linux-crypto@vger.kernel.org
 S:	Supported
 F:	drivers/crypto/ccp/

arch/arm/boot/dts/imx25.dtsi

@@ -420,6 +420,15 @@
 				interrupts = <41>;
 			};
 
+			scc: crypto@53fac000 {
+				compatible = "fsl,imx25-scc";
+				reg = <0x53fac000 0x4000>;
+				clocks = <&clks 111>;
+				clock-names = "ipg";
+				interrupts = <49>, <50>;
+				interrupt-names = "scm", "smn";
+			};
+
 			esdhc1: esdhc@53fb4000 {
 				compatible = "fsl,imx25-esdhc";
 				reg = <0x53fb4000 0x4000>;

crypto/algif_aead.c

@@ -13,7 +13,7 @@
  * any later version.
  */
 
-#include <crypto/aead.h>
+#include <crypto/internal/aead.h>
 #include <crypto/scatterwalk.h>
 #include <crypto/if_alg.h>
 #include <linux/init.h>
@@ -29,15 +29,24 @@ struct aead_sg_list {
 	struct scatterlist sg[ALG_MAX_PAGES];
 };
 
+struct aead_async_rsgl {
+	struct af_alg_sgl sgl;
+	struct list_head list;
+};
+
+struct aead_async_req {
+	struct scatterlist *tsgl;
+	struct aead_async_rsgl first_rsgl;
+	struct list_head list;
+	struct kiocb *iocb;
+	unsigned int tsgls;
+	char iv[];
+};
+
 struct aead_ctx {
 	struct aead_sg_list tsgl;
-	/*
-	 * RSGL_MAX_ENTRIES is an artificial limit where user space at maximum
-	 * can cause the kernel to allocate RSGL_MAX_ENTRIES * ALG_MAX_PAGES
-	 * pages
-	 */
-#define RSGL_MAX_ENTRIES ALG_MAX_PAGES
-	struct af_alg_sgl rsgl[RSGL_MAX_ENTRIES];
+	struct aead_async_rsgl first_rsgl;
+	struct list_head list;
 
 	void *iv;
 
@@ -75,6 +84,17 @@ static inline bool aead_sufficient_data(struct aead_ctx *ctx)
 	return ctx->used >= ctx->aead_assoclen + as;
 }
 
+static void aead_reset_ctx(struct aead_ctx *ctx)
+{
+	struct aead_sg_list *sgl = &ctx->tsgl;
+
+	sg_init_table(sgl->sg, ALG_MAX_PAGES);
+	sgl->cur = 0;
+	ctx->used = 0;
+	ctx->more = 0;
+	ctx->merge = 0;
+}
+
 static void aead_put_sgl(struct sock *sk)
 {
 	struct alg_sock *ask = alg_sk(sk);
@@ -90,11 +110,7 @@ static void aead_put_sgl(struct sock *sk)
 		put_page(sg_page(sg + i));
 		sg_assign_page(sg + i, NULL);
 	}
-	sg_init_table(sg, ALG_MAX_PAGES);
-	sgl->cur = 0;
-	ctx->used = 0;
-	ctx->more = 0;
-	ctx->merge = 0;
+	aead_reset_ctx(ctx);
 }
 
 static void aead_wmem_wakeup(struct sock *sk)
@@ -349,23 +365,188 @@ unlock:
 	return err ?: size;
 }
 
-static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored, int flags)
+#define GET_ASYM_REQ(req, tfm) (struct aead_async_req *) \
+		((char *)req + sizeof(struct aead_request) + \
+		 crypto_aead_reqsize(tfm))
+
+ #define GET_REQ_SIZE(tfm) sizeof(struct aead_async_req) + \
+	crypto_aead_reqsize(tfm) + crypto_aead_ivsize(tfm) + \
+	sizeof(struct aead_request)
+
+static void aead_async_cb(struct crypto_async_request *_req, int err)
+{
+	struct sock *sk = _req->data;
+	struct alg_sock *ask = alg_sk(sk);
+	struct aead_ctx *ctx = ask->private;
+	struct crypto_aead *tfm = crypto_aead_reqtfm(&ctx->aead_req);
+	struct aead_request *req = aead_request_cast(_req);
+	struct aead_async_req *areq = GET_ASYM_REQ(req, tfm);
+	struct scatterlist *sg = areq->tsgl;
+	struct aead_async_rsgl *rsgl;
+	struct kiocb *iocb = areq->iocb;
+	unsigned int i, reqlen = GET_REQ_SIZE(tfm);
+
+	list_for_each_entry(rsgl, &areq->list, list) {
+		af_alg_free_sg(&rsgl->sgl);
+		if (rsgl != &areq->first_rsgl)
+			sock_kfree_s(sk, rsgl, sizeof(*rsgl));
+	}
+
+	for (i = 0; i < areq->tsgls; i++)
+		put_page(sg_page(sg + i));
+
+	sock_kfree_s(sk, areq->tsgl, sizeof(*areq->tsgl) * areq->tsgls);
+	sock_kfree_s(sk, req, reqlen);
+	__sock_put(sk);
+	iocb->ki_complete(iocb, err, err);
+}
+
+static int aead_recvmsg_async(struct socket *sock, struct msghdr *msg,
+			      int flags)
+{
+	struct sock *sk = sock->sk;
+	struct alg_sock *ask = alg_sk(sk);
+	struct aead_ctx *ctx = ask->private;
+	struct crypto_aead *tfm = crypto_aead_reqtfm(&ctx->aead_req);
+	struct aead_async_req *areq;
+	struct aead_request *req = NULL;
+	struct aead_sg_list *sgl = &ctx->tsgl;
+	struct aead_async_rsgl *last_rsgl = NULL, *rsgl;
+	unsigned int as = crypto_aead_authsize(tfm);
+	unsigned int i, reqlen = GET_REQ_SIZE(tfm);
+	int err = -ENOMEM;
+	unsigned long used;
+	size_t outlen;
+	size_t usedpages = 0;
+
+	lock_sock(sk);
+	if (ctx->more) {
+		err = aead_wait_for_data(sk, flags);
+		if (err)
+			goto unlock;
+	}
+
+	used = ctx->used;
+	outlen = used;
+
+	if (!aead_sufficient_data(ctx))
+		goto unlock;
+
+	req = sock_kmalloc(sk, reqlen, GFP_KERNEL);
+	if (unlikely(!req))
+		goto unlock;
+
+	areq = GET_ASYM_REQ(req, tfm);
+	memset(&areq->first_rsgl, '\0', sizeof(areq->first_rsgl));
+	INIT_LIST_HEAD(&areq->list);
+	areq->iocb = msg->msg_iocb;
+	memcpy(areq->iv, ctx->iv, crypto_aead_ivsize(tfm));
+	aead_request_set_tfm(req, tfm);
+	aead_request_set_ad(req, ctx->aead_assoclen);
+	aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+				  aead_async_cb, sk);
+	used -= ctx->aead_assoclen + (ctx->enc ? as : 0);
+
+	/* take over all tx sgls from ctx */
+	areq->tsgl = sock_kmalloc(sk, sizeof(*areq->tsgl) * sgl->cur,
+				  GFP_KERNEL);
+	if (unlikely(!areq->tsgl))
+		goto free;
+
+	sg_init_table(areq->tsgl, sgl->cur);
+	for (i = 0; i < sgl->cur; i++)
+		sg_set_page(&areq->tsgl[i], sg_page(&sgl->sg[i]),
+			    sgl->sg[i].length, sgl->sg[i].offset);
+
+	areq->tsgls = sgl->cur;
+
+	/* create rx sgls */
+	while (iov_iter_count(&msg->msg_iter)) {
+		size_t seglen = min_t(size_t, iov_iter_count(&msg->msg_iter),
+				      (outlen - usedpages));
+
+		if (list_empty(&areq->list)) {
+			rsgl = &areq->first_rsgl;
+
+		} else {
+			rsgl = sock_kmalloc(sk, sizeof(*rsgl), GFP_KERNEL);
+			if (unlikely(!rsgl)) {
+				err = -ENOMEM;
+				goto free;
+			}
+		}
+		rsgl->sgl.npages = 0;
+		list_add_tail(&rsgl->list, &areq->list);
+
+		/* make one iovec available as scatterlist */
+		err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen);
+		if (err < 0)
+			goto free;
+
+		usedpages += err;
+
+		/* chain the new scatterlist with previous one */
+		if (last_rsgl)
+			af_alg_link_sg(&last_rsgl->sgl, &rsgl->sgl);
+
+		last_rsgl = rsgl;
+
+		/* we do not need more iovecs as we have sufficient memory */
+		if (outlen <= usedpages)
+			break;
+
+		iov_iter_advance(&msg->msg_iter, err);
+	}
+	err = -EINVAL;
+	/* ensure output buffer is sufficiently large */
+	if (usedpages < outlen)
+		goto free;
+
+	aead_request_set_crypt(req, areq->tsgl, areq->first_rsgl.sgl.sg, used,
+			       areq->iv);
+	err = ctx->enc ? crypto_aead_encrypt(req) : crypto_aead_decrypt(req);
+	if (err) {
+		if (err == -EINPROGRESS) {
+			sock_hold(sk);
+			err = -EIOCBQUEUED;
+			aead_reset_ctx(ctx);
+			goto unlock;
+		} else if (err == -EBADMSG) {
+			aead_put_sgl(sk);
+		}
+		goto free;
+	}
+	aead_put_sgl(sk);
+
+free:
+	list_for_each_entry(rsgl, &areq->list, list) {
+		af_alg_free_sg(&rsgl->sgl);
+		if (rsgl != &areq->first_rsgl)
+			sock_kfree_s(sk, rsgl, sizeof(*rsgl));
+	}
+	if (areq->tsgl)
+		sock_kfree_s(sk, areq->tsgl, sizeof(*areq->tsgl) * areq->tsgls);
+	if (req)
+		sock_kfree_s(sk, req, reqlen);
+unlock:
+	aead_wmem_wakeup(sk);
+	release_sock(sk);
+	return err ? err : outlen;
+}
+
+static int aead_recvmsg_sync(struct socket *sock, struct msghdr *msg, int flags)
 {
 	struct sock *sk = sock->sk;
 	struct alg_sock *ask = alg_sk(sk);
 	struct aead_ctx *ctx = ask->private;
 	unsigned as = crypto_aead_authsize(crypto_aead_reqtfm(&ctx->aead_req));
 	struct aead_sg_list *sgl = &ctx->tsgl;
-	unsigned int i = 0;
+	struct aead_async_rsgl *last_rsgl = NULL;
+	struct aead_async_rsgl *rsgl, *tmp;
 	int err = -EINVAL;
 	unsigned long used = 0;
 	size_t outlen = 0;
 	size_t usedpages = 0;
-	unsigned int cnt = 0;
-
-	/* Limit number of IOV blocks to be accessed below */
-	if (msg->msg_iter.nr_segs > RSGL_MAX_ENTRIES)
-		return -ENOMSG;
 
 	lock_sock(sk);
 
@@ -417,21 +598,33 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
 		size_t seglen = min_t(size_t, iov_iter_count(&msg->msg_iter),
 				      (outlen - usedpages));
 
+		if (list_empty(&ctx->list)) {
+			rsgl = &ctx->first_rsgl;
+		} else {
+			rsgl = sock_kmalloc(sk, sizeof(*rsgl), GFP_KERNEL);
+			if (unlikely(!rsgl)) {
+				err = -ENOMEM;
+				goto unlock;
+			}
+		}
+		rsgl->sgl.npages = 0;
+		list_add_tail(&rsgl->list, &ctx->list);
+
 		/* make one iovec available as scatterlist */
-		err = af_alg_make_sg(&ctx->rsgl[cnt], &msg->msg_iter,
-				     seglen);
+		err = af_alg_make_sg(&rsgl->sgl, &msg->msg_iter, seglen);
 		if (err < 0)
 			goto unlock;
 		usedpages += err;
 		/* chain the new scatterlist with previous one */
-		if (cnt)
-			af_alg_link_sg(&ctx->rsgl[cnt-1], &ctx->rsgl[cnt]);
+		if (last_rsgl)
+			af_alg_link_sg(&last_rsgl->sgl, &rsgl->sgl);
+
+		last_rsgl = rsgl;
 
 		/* we do not need more iovecs as we have sufficient memory */
 		if (outlen <= usedpages)
 			break;
 		iov_iter_advance(&msg->msg_iter, err);
-		cnt++;
 	}
 
 	err = -EINVAL;
@@ -440,8 +633,7 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
 		goto unlock;
 
 	sg_mark_end(sgl->sg + sgl->cur - 1);
-
-	aead_request_set_crypt(&ctx->aead_req, sgl->sg, ctx->rsgl[0].sg,
+	aead_request_set_crypt(&ctx->aead_req, sgl->sg, ctx->first_rsgl.sgl.sg,
 			       used, ctx->iv);
 	aead_request_set_ad(&ctx->aead_req, ctx->aead_assoclen);
 
@@ -454,23 +646,35 @@ static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
 		/* EBADMSG implies a valid cipher operation took place */
 		if (err == -EBADMSG)
 			aead_put_sgl(sk);
+
 		goto unlock;
 	}
 
 	aead_put_sgl(sk);
-
 	err = 0;
 
 unlock:
-	for (i = 0; i < cnt; i++)
-		af_alg_free_sg(&ctx->rsgl[i]);
-
+	list_for_each_entry_safe(rsgl, tmp, &ctx->list, list) {
+		af_alg_free_sg(&rsgl->sgl);
+		if (rsgl != &ctx->first_rsgl)
+			sock_kfree_s(sk, rsgl, sizeof(*rsgl));
+		list_del(&rsgl->list);
+	}
+	INIT_LIST_HEAD(&ctx->list);
 	aead_wmem_wakeup(sk);
 	release_sock(sk);
 
 	return err ? err : outlen;
 }
 
+static int aead_recvmsg(struct socket *sock, struct msghdr *msg, size_t ignored,
+			int flags)
+{
+	return (msg->msg_iocb && !is_sync_kiocb(msg->msg_iocb)) ?
+		aead_recvmsg_async(sock, msg, flags) :
+		aead_recvmsg_sync(sock, msg, flags);
+}
+
 static unsigned int aead_poll(struct file *file, struct socket *sock,
 			      poll_table *wait)
 {
@@ -540,6 +744,7 @@ static void aead_sock_destruct(struct sock *sk)
 	unsigned int ivlen = crypto_aead_ivsize(
 				crypto_aead_reqtfm(&ctx->aead_req));
 
+	WARN_ON(atomic_read(&sk->sk_refcnt) != 0);
 	aead_put_sgl(sk);
 	sock_kzfree_s(sk, ctx->iv, ivlen);
 	sock_kfree_s(sk, ctx, ctx->len);
@@ -574,6 +779,7 @@ static int aead_accept_parent(void *private, struct sock *sk)
 	ctx->aead_assoclen = 0;
 	af_alg_init_completion(&ctx->completion);
 	sg_init_table(ctx->tsgl.sg, ALG_MAX_PAGES);
+	INIT_LIST_HEAD(&ctx->list);
 
 	ask->private = ctx;
 

crypto/asymmetric_keys/pkcs7_parser.c

@@ -237,6 +237,7 @@ int pkcs7_sig_note_digest_algo(void *context, size_t hdrlen,
 		break;
 	case OID_sha224:
 		ctx->sinfo->sig.hash_algo = "sha224";
+		break;
 	default:
 		printk("Unsupported digest algo: %u\n", ctx->last_oid);
 		return -ENOPKG;

crypto/drbg.c

@@ -592,8 +592,10 @@ static const struct drbg_state_ops drbg_ctr_ops = {
  ******************************************************************/
 
 #if defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_HMAC)
-static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
-			   unsigned char *outval, const struct list_head *in);
+static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
+			   const struct list_head *in);
+static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
+				  const unsigned char *key);
 static int drbg_init_hash_kernel(struct drbg_state *drbg);
 static int drbg_fini_hash_kernel(struct drbg_state *drbg);
 #endif /* (CONFIG_CRYPTO_DRBG_HASH || CONFIG_CRYPTO_DRBG_HMAC) */
@@ -619,9 +621,11 @@ static int drbg_hmac_update(struct drbg_state *drbg, struct list_head *seed,
 	LIST_HEAD(seedlist);
 	LIST_HEAD(vdatalist);
 
-	if (!reseed)
+	if (!reseed) {
 		/* 10.1.2.3 step 2 -- memset(0) of C is implicit with kzalloc */
 		memset(drbg->V, 1, drbg_statelen(drbg));
+		drbg_kcapi_hmacsetkey(drbg, drbg->C);
+	}
 
 	drbg_string_fill(&seed1, drbg->V, drbg_statelen(drbg));
 	list_add_tail(&seed1.list, &seedlist);
@@ -641,12 +645,13 @@ static int drbg_hmac_update(struct drbg_state *drbg, struct list_head *seed,
 			prefix = DRBG_PREFIX1;
 		/* 10.1.2.2 step 1 and 4 -- concatenation and HMAC for key */
 		seed2.buf = &prefix;
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->C, &seedlist);
+		ret = drbg_kcapi_hash(drbg, drbg->C, &seedlist);
 		if (ret)
 			return ret;
+		drbg_kcapi_hmacsetkey(drbg, drbg->C);
 
 		/* 10.1.2.2 step 2 and 5 -- HMAC for V */
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &vdatalist);
+		ret = drbg_kcapi_hash(drbg, drbg->V, &vdatalist);
 		if (ret)
 			return ret;
 
@@ -681,7 +686,7 @@ static int drbg_hmac_generate(struct drbg_state *drbg,
 	while (len < buflen) {
 		unsigned int outlen = 0;
 		/* 10.1.2.5 step 4.1 */
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &datalist);
+		ret = drbg_kcapi_hash(drbg, drbg->V, &datalist);
 		if (ret)
 			return ret;
 		outlen = (drbg_blocklen(drbg) < (buflen - len)) ?
@@ -796,7 +801,7 @@ static int drbg_hash_df(struct drbg_state *drbg,
 	while (len < outlen) {
 		short blocklen = 0;
 		/* 10.4.1 step 4.1 */
-		ret = drbg_kcapi_hash(drbg, NULL, tmp, entropylist);
+		ret = drbg_kcapi_hash(drbg, tmp, entropylist);
 		if (ret)
 			goto out;
 		/* 10.4.1 step 4.2 */
@@ -874,7 +879,7 @@ static int drbg_hash_process_addtl(struct drbg_state *drbg,
 	list_add_tail(&data1.list, &datalist);
 	list_add_tail(&data2.list, &datalist);
 	list_splice_tail(addtl, &datalist);
-	ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &datalist);
+	ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist);
 	if (ret)
 		goto out;
 
@@ -907,7 +912,7 @@ static int drbg_hash_hashgen(struct drbg_state *drbg,
 	while (len < buflen) {
 		unsigned int outlen = 0;
 		/* 10.1.1.4 step hashgen 4.1 */
-		ret = drbg_kcapi_hash(drbg, NULL, dst, &datalist);
+		ret = drbg_kcapi_hash(drbg, dst, &datalist);
 		if (ret) {
 			len = ret;
 			goto out;
@@ -956,7 +961,7 @@ static int drbg_hash_generate(struct drbg_state *drbg,
 	list_add_tail(&data1.list, &datalist);
 	drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg));
 	list_add_tail(&data2.list, &datalist);
-	ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &datalist);
+	ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist);
 	if (ret) {
 		len = ret;
 		goto out;
@@ -1600,14 +1605,20 @@ static int drbg_fini_hash_kernel(struct drbg_state *drbg)
 	return 0;
 }
 
-static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
-			   unsigned char *outval, const struct list_head *in)
+static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
+				  const unsigned char *key)
+{
+	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+
+	crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
+}
+
+static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
+			   const struct list_head *in)
 {
 	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
 	struct drbg_string *input = NULL;
 
-	if (key)
-		crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
 	crypto_shash_init(&sdesc->shash);
 	list_for_each_entry(input, in, list)
 		crypto_shash_update(&sdesc->shash, input->buf, input->len);

crypto/lzo.c

@@ -32,7 +32,7 @@ static int lzo_init(struct crypto_tfm *tfm)
 	struct lzo_ctx *ctx = crypto_tfm_ctx(tfm);
 
 	ctx->lzo_comp_mem = kmalloc(LZO1X_MEM_COMPRESS,
-				    GFP_KERNEL | __GFP_NOWARN | __GFP_REPEAT);
+				    GFP_KERNEL | __GFP_NOWARN);
 	if (!ctx->lzo_comp_mem)
 		ctx->lzo_comp_mem = vmalloc(LZO1X_MEM_COMPRESS);
 	if (!ctx->lzo_comp_mem)

crypto/testmgr.c

@@ -35,6 +35,10 @@
 
 #include "internal.h"
 
+static bool notests;
+module_param(notests, bool, 0644);
+MODULE_PARM_DESC(notests, "disable crypto self-tests");
+
 #ifdef CONFIG_CRYPTO_MANAGER_DISABLE_TESTS
 
 /* a perfect nop */
@@ -3885,6 +3889,11 @@ int alg_test(const char *driver, const char *alg, u32 type, u32 mask)
 	int j;
 	int rc;
 
+	if (!fips_enabled && notests) {
+		printk_once(KERN_INFO "alg: self-tests disabled\n");
+		return 0;
+	}
+
 	alg_test_descs_check_order();
 
 	if ((type & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_CIPHER) {

drivers/char/hw_random/Kconfig

@@ -268,19 +268,6 @@ config HW_RANDOM_NOMADIK
 
 	  If unsure, say Y.
 
-config HW_RANDOM_PPC4XX
-	tristate "PowerPC 4xx generic true random number generator support"
-	depends on PPC && 4xx
-	default HW_RANDOM
-	---help---
-	 This driver provides the kernel-side support for the TRNG hardware
-	 found in the security function of some PowerPC 4xx SoCs.
-
-	 To compile this driver as a module, choose M here: the
-	 module will be called ppc4xx-rng.
-
-	 If unsure, say N.
-
 config HW_RANDOM_PSERIES
 	tristate "pSeries HW Random Number Generator support"
 	depends on PPC64 && IBMVIO
@@ -309,7 +296,8 @@ config HW_RANDOM_POWERNV
 
 config HW_RANDOM_EXYNOS
 	tristate "EXYNOS HW random number generator support"
-	depends on ARCH_EXYNOS
+	depends on ARCH_EXYNOS || COMPILE_TEST
+	depends on HAS_IOMEM
 	default HW_RANDOM
 	---help---
 	  This driver provides kernel-side support for the Random Number
@@ -333,6 +321,19 @@ config HW_RANDOM_TPM
 
 	  If unsure, say Y.
 
+config HW_RANDOM_HISI
+	tristate "Hisilicon Random Number Generator support"
+	depends on HW_RANDOM && ARCH_HISI
+	default HW_RANDOM
+	---help---
+	  This driver provides kernel-side support for the Random Number
+	  Generator hardware found on Hisilicon Hip04 and Hip05 SoC.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hisi-rng.
+
+	  If unsure, say Y.
+
 config HW_RANDOM_MSM
 	tristate "Qualcomm SoCs Random Number Generator support"
 	depends on HW_RANDOM && ARCH_QCOM

drivers/char/hw_random/Makefile

@@ -22,10 +22,10 @@ obj-$(CONFIG_HW_RANDOM_TX4939) += tx4939-rng.o
 obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o
 obj-$(CONFIG_HW_RANDOM_OCTEON) += octeon-rng.o
 obj-$(CONFIG_HW_RANDOM_NOMADIK) += nomadik-rng.o
-obj-$(CONFIG_HW_RANDOM_PPC4XX) += ppc4xx-rng.o
 obj-$(CONFIG_HW_RANDOM_PSERIES) += pseries-rng.o
 obj-$(CONFIG_HW_RANDOM_POWERNV) += powernv-rng.o
 obj-$(CONFIG_HW_RANDOM_EXYNOS)	+= exynos-rng.o
+obj-$(CONFIG_HW_RANDOM_HISI)	+= hisi-rng.o
 obj-$(CONFIG_HW_RANDOM_TPM) += tpm-rng.o
 obj-$(CONFIG_HW_RANDOM_BCM2835) += bcm2835-rng.o
 obj-$(CONFIG_HW_RANDOM_IPROC_RNG200) += iproc-rng200.o

drivers/char/hw_random/exynos-rng.c

@@ -2,7 +2,7 @@
  * exynos-rng.c - Random Number Generator driver for the exynos
  *
  * Copyright (C) 2012 Samsung Electronics
- * Jonghwa Lee <jonghwa3.lee@smasung.com>
+ * Jonghwa Lee <jonghwa3.lee@samsung.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -77,7 +77,8 @@ static int exynos_init(struct hwrng *rng)
 
 	pm_runtime_get_sync(exynos_rng->dev);
 	ret = exynos_rng_configure(exynos_rng);
-	pm_runtime_put_noidle(exynos_rng->dev);
+	pm_runtime_mark_last_busy(exynos_rng->dev);
+	pm_runtime_put_autosuspend(exynos_rng->dev);
 
 	return ret;
 }
@@ -89,6 +90,7 @@ static int exynos_read(struct hwrng *rng, void *buf,
 						struct exynos_rng, rng);
 	u32 *data = buf;
 	int retry = 100;
+	int ret = 4;
 
 	pm_runtime_get_sync(exynos_rng->dev);
 
@@ -97,23 +99,27 @@ static int exynos_read(struct hwrng *rng, void *buf,
 	while (!(exynos_rng_readl(exynos_rng,
 			EXYNOS_PRNG_STATUS_OFFSET) & PRNG_DONE) && --retry)
 		cpu_relax();
-	if (!retry)
-		return -ETIMEDOUT;
+	if (!retry) {
+		ret = -ETIMEDOUT;
+		goto out;
+	}
 
 	exynos_rng_writel(exynos_rng, PRNG_DONE, EXYNOS_PRNG_STATUS_OFFSET);
 
 	*data = exynos_rng_readl(exynos_rng, EXYNOS_PRNG_OUT1_OFFSET);
 
+out:
 	pm_runtime_mark_last_busy(exynos_rng->dev);
 	pm_runtime_put_sync_autosuspend(exynos_rng->dev);
 
-	return 4;
+	return ret;
 }
 
 static int exynos_rng_probe(struct platform_device *pdev)
 {
 	struct exynos_rng *exynos_rng;
 	struct resource *res;
+	int ret;
 
 	exynos_rng = devm_kzalloc(&pdev->dev, sizeof(struct exynos_rng),
 					GFP_KERNEL);
@@ -141,7 +147,21 @@ static int exynos_rng_probe(struct platform_device *pdev)
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
-	return devm_hwrng_register(&pdev->dev, &exynos_rng->rng);
+	ret = devm_hwrng_register(&pdev->dev, &exynos_rng->rng);
+	if (ret) {
+		pm_runtime_dont_use_autosuspend(&pdev->dev);
+		pm_runtime_disable(&pdev->dev);
+	}
+
+	return ret;
+}
+
+static int exynos_rng_remove(struct platform_device *pdev)
+{
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
 }
 
 static int __maybe_unused exynos_rng_runtime_suspend(struct device *dev)
@@ -201,6 +221,7 @@ static struct platform_driver exynos_rng_driver = {
 		.of_match_table = exynos_rng_dt_match,
 	},
 	.probe		= exynos_rng_probe,
+	.remove		= exynos_rng_remove,
 };
 
 module_platform_driver(exynos_rng_driver);

drivers/char/hw_random/hisi-rng.c

@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2016 HiSilicon Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/hw_random.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+
+#define RNG_SEED	0x0
+#define RNG_CTRL	0x4
+  #define RNG_SEED_SEL	BIT(2)
+  #define RNG_RING_EN	BIT(1)
+  #define RNG_EN	BIT(0)
+#define RNG_RAN_NUM	0x10
+#define RNG_PHY_SEED	0x14
+
+#define to_hisi_rng(p)	container_of(p, struct hisi_rng, rng)
+
+static int seed_sel;
+module_param(seed_sel, int, S_IRUGO);
+MODULE_PARM_DESC(seed_sel, "Auto reload seed. 0, use LFSR(default); 1, use ring oscillator.");
+
+struct hisi_rng {
+	void __iomem *base;
+	struct hwrng rng;
+};
+
+static int hisi_rng_init(struct hwrng *rng)
+{
+	struct hisi_rng *hrng = to_hisi_rng(rng);
+	int val = RNG_EN;
+	u32 seed;
+
+	/* get a random number as initial seed */
+	get_random_bytes(&seed, sizeof(seed));
+
+	writel_relaxed(seed, hrng->base + RNG_SEED);
+
+	/**
+	 * The seed is reload periodically, there are two choice
+	 * of seeds, default seed using the value from LFSR, or
+	 * will use seed generated by ring oscillator.
+	 */
+	if (seed_sel == 1)
+		val |= RNG_RING_EN | RNG_SEED_SEL;
+
+	writel_relaxed(val, hrng->base + RNG_CTRL);
+	return 0;
+}
+
+static void hisi_rng_cleanup(struct hwrng *rng)
+{
+	struct hisi_rng *hrng = to_hisi_rng(rng);
+
+	writel_relaxed(0, hrng->base + RNG_CTRL);
+}
+
+static int hisi_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait)
+{
+	struct hisi_rng *hrng = to_hisi_rng(rng);
+	u32 *data = buf;
+
+	*data = readl_relaxed(hrng->base + RNG_RAN_NUM);
+	return 4;
+}
+
+static int hisi_rng_probe(struct platform_device *pdev)
+{
+	struct hisi_rng *rng;
+	struct resource *res;
+	int ret;
+
+	rng = devm_kzalloc(&pdev->dev, sizeof(*rng), GFP_KERNEL);
+	if (!rng)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, rng);
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	rng->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(rng->base))
+		return PTR_ERR(rng->base);
+
+	rng->rng.name = pdev->name;
+	rng->rng.init = hisi_rng_init;
+	rng->rng.cleanup = hisi_rng_cleanup;
+	rng->rng.read = hisi_rng_read;
+
+	ret = devm_hwrng_register(&pdev->dev, &rng->rng);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register hwrng\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct of_device_id hisi_rng_dt_ids[] = {
+	{ .compatible = "hisilicon,hip04-rng" },
+	{ .compatible = "hisilicon,hip05-rng" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hisi_rng_dt_ids);
+
+static struct platform_driver hisi_rng_driver = {
+	.probe		= hisi_rng_probe,
+	.driver		= {
+		.name	= "hisi-rng",
+		.of_match_table = of_match_ptr(hisi_rng_dt_ids),
+	},
+};
+
+module_platform_driver(hisi_rng_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kefeng Wang <wangkefeng.wang@huawei>");
+MODULE_DESCRIPTION("Hisilicon random number generator driver");

drivers/char/hw_random/ppc4xx-rng.c

@@ -1,147 +0,0 @@
-/*
- * Generic PowerPC 44x RNG driver
- *
- * Copyright 2011 IBM Corporation
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; version 2 of the License.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/hw_random.h>
-#include <linux/delay.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
-#include <asm/io.h>
-
-#define PPC4XX_TRNG_DEV_CTRL 0x60080
-
-#define PPC4XX_TRNGE 0x00020000
-#define PPC4XX_TRNG_CTRL 0x0008
-#define PPC4XX_TRNG_CTRL_DALM 0x20
-#define PPC4XX_TRNG_STAT 0x0004
-#define PPC4XX_TRNG_STAT_B 0x1
-#define PPC4XX_TRNG_DATA 0x0000
-
-#define MODULE_NAME "ppc4xx_rng"
-
-static int ppc4xx_rng_data_present(struct hwrng *rng, int wait)
-{
-	void __iomem *rng_regs = (void __iomem *) rng->priv;
-	int busy, i, present = 0;
-
-	for (i = 0; i < 20; i++) {
-		busy = (in_le32(rng_regs + PPC4XX_TRNG_STAT) & PPC4XX_TRNG_STAT_B);
-		if (!busy || !wait) {
-			present = 1;
-			break;
-		}
-		udelay(10);
-	}
-	return present;
-}
-
-static int ppc4xx_rng_data_read(struct hwrng *rng, u32 *data)
-{
-	void __iomem *rng_regs = (void __iomem *) rng->priv;
-	*data = in_le32(rng_regs + PPC4XX_TRNG_DATA);
-	return 4;
-}
-
-static int ppc4xx_rng_enable(int enable)
-{
-	struct device_node *ctrl;
-	void __iomem *ctrl_reg;
-	int err = 0;
-	u32 val;
-
-	/* Find the main crypto device node and map it to turn the TRNG on */
-	ctrl = of_find_compatible_node(NULL, NULL, "amcc,ppc4xx-crypto");
-	if (!ctrl)
-		return -ENODEV;
-
-	ctrl_reg = of_iomap(ctrl, 0);
-	if (!ctrl_reg) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	val = in_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL);
-
-	if (enable)
-		val |= PPC4XX_TRNGE;
-	else
-		val = val & ~PPC4XX_TRNGE;
-
-	out_le32(ctrl_reg + PPC4XX_TRNG_DEV_CTRL, val);
-	iounmap(ctrl_reg);
-
-out:
-	of_node_put(ctrl);
-
-	return err;
-}
-
-static struct hwrng ppc4xx_rng = {
-	.name = MODULE_NAME,
-	.data_present = ppc4xx_rng_data_present,
-	.data_read = ppc4xx_rng_data_read,
-};
-
-static int ppc4xx_rng_probe(struct platform_device *dev)
-{
-	void __iomem *rng_regs;
-	int err = 0;
-
-	rng_regs = of_iomap(dev->dev.of_node, 0);
-	if (!rng_regs)
-		return -ENODEV;
-
-	err = ppc4xx_rng_enable(1);
-	if (err)
-		return err;
-
-	out_le32(rng_regs + PPC4XX_TRNG_CTRL, PPC4XX_TRNG_CTRL_DALM);
-	ppc4xx_rng.priv = (unsigned long) rng_regs;
-
-	err = hwrng_register(&ppc4xx_rng);
-
-	return err;
-}
-
-static int ppc4xx_rng_remove(struct platform_device *dev)
-{
-	void __iomem *rng_regs = (void __iomem *) ppc4xx_rng.priv;
-
-	hwrng_unregister(&ppc4xx_rng);
-	ppc4xx_rng_enable(0);
-	iounmap(rng_regs);
-
-	return 0;
-}
-
-static const struct of_device_id ppc4xx_rng_match[] = {
-	{ .compatible = "ppc4xx-rng", },
-	{ .compatible = "amcc,ppc460ex-rng", },
-	{ .compatible = "amcc,ppc440epx-rng", },
-	{},
-};
-MODULE_DEVICE_TABLE(of, ppc4xx_rng_match);
-
-static struct platform_driver ppc4xx_rng_driver = {
-	.driver = {
-		.name = MODULE_NAME,
-		.of_match_table = ppc4xx_rng_match,
-	},
-	.probe = ppc4xx_rng_probe,
-	.remove = ppc4xx_rng_remove,
-};
-
-module_platform_driver(ppc4xx_rng_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Josh Boyer <jwboyer@linux.vnet.ibm.com>");
-MODULE_DESCRIPTION("HW RNG driver for PPC 4xx processors");

drivers/crypto/Kconfig

@@ -279,6 +279,14 @@ config CRYPTO_DEV_PPC4XX
 	help
 	  This option allows you to have support for AMCC crypto acceleration.
 
+config HW_RANDOM_PPC4XX
+	bool "PowerPC 4xx generic true random number generator support"
+	depends on CRYPTO_DEV_PPC4XX && HW_RANDOM
+	default y
+	---help---
+	 This option provides the kernel-side support for the TRNG hardware
+	 found in the security function of some PowerPC 4xx SoCs.
+
 config CRYPTO_DEV_OMAP_SHAM
 	tristate "Support for OMAP MD5/SHA1/SHA2 hw accelerator"
 	depends on ARCH_OMAP2PLUS
@@ -302,15 +310,16 @@ config CRYPTO_DEV_OMAP_AES
 	  want to use the OMAP module for AES algorithms.
 
 config CRYPTO_DEV_OMAP_DES
-	tristate "Support for OMAP DES3DES hw engine"
+	tristate "Support for OMAP DES/3DES hw engine"
 	depends on ARCH_OMAP2PLUS
 	select CRYPTO_DES
 	select CRYPTO_BLKCIPHER
+	select CRYPTO_ENGINE
 	help
 	  OMAP processors have DES/3DES module accelerator. Select this if you
 	  want to use the OMAP module for DES and 3DES algorithms. Currently
-	  the ECB and CBC modes of operation supported by the driver. Also
-	  accesses made on unaligned boundaries are also supported.
+	  the ECB and CBC modes of operation are supported by the driver. Also
+	  accesses made on unaligned boundaries are supported.
 
 config CRYPTO_DEV_PICOXCELL
 	tristate "Support for picoXcell IPSEC and Layer2 crypto engines"
@@ -340,9 +349,19 @@ config CRYPTO_DEV_SAHARA
 	  This option enables support for the SAHARA HW crypto accelerator
 	  found in some Freescale i.MX chips.
 
+config CRYPTO_DEV_MXC_SCC
+	tristate "Support for Freescale Security Controller (SCC)"
+	depends on ARCH_MXC && OF
+	select CRYPTO_BLKCIPHER
+	select CRYPTO_DES
+	help
+	  This option enables support for the Security Controller (SCC)
+	  found in Freescale i.MX25 chips.
+
 config CRYPTO_DEV_S5P
 	tristate "Support for Samsung S5PV210/Exynos crypto accelerator"
-	depends on ARCH_S5PV210 || ARCH_EXYNOS
+	depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
+	depends on HAS_IOMEM && HAS_DMA
 	select CRYPTO_AES
 	select CRYPTO_BLKCIPHER
 	help

drivers/crypto/Makefile

@@ -23,6 +23,7 @@ obj-$(CONFIG_CRYPTO_DEV_PICOXCELL) += picoxcell_crypto.o
 obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += amcc/
 obj-$(CONFIG_CRYPTO_DEV_S5P) += s5p-sss.o
 obj-$(CONFIG_CRYPTO_DEV_SAHARA) += sahara.o
+obj-$(CONFIG_CRYPTO_DEV_MXC_SCC) += mxc-scc.o
 obj-$(CONFIG_CRYPTO_DEV_TALITOS) += talitos.o
 obj-$(CONFIG_CRYPTO_DEV_UX500) += ux500/
 obj-$(CONFIG_CRYPTO_DEV_QAT) += qat/

drivers/crypto/amcc/Makefile

@@ -1,2 +1,3 @@
 obj-$(CONFIG_CRYPTO_DEV_PPC4XX) += crypto4xx.o
 crypto4xx-y :=  crypto4xx_core.o crypto4xx_alg.o crypto4xx_sa.o
+crypto4xx-$(CONFIG_HW_RANDOM_PPC4XX) += crypto4xx_trng.o

drivers/crypto/amcc/crypto4xx_core.c

@@ -40,6 +40,7 @@
 #include "crypto4xx_reg_def.h"
 #include "crypto4xx_core.h"
 #include "crypto4xx_sa.h"
+#include "crypto4xx_trng.h"
 
 #define PPC4XX_SEC_VERSION_STR			"0.5"
 
@@ -1225,6 +1226,7 @@ static int crypto4xx_probe(struct platform_device *ofdev)
 	if (rc)
 		goto err_start_dev;
 
+	ppc4xx_trng_probe(core_dev);
 	return 0;
 
 err_start_dev:
@@ -1252,6 +1254,8 @@ static int crypto4xx_remove(struct platform_device *ofdev)
 	struct device *dev = &ofdev->dev;
 	struct crypto4xx_core_device *core_dev = dev_get_drvdata(dev);
 
+	ppc4xx_trng_remove(core_dev);
+
 	free_irq(core_dev->irq, dev);
 	irq_dispose_mapping(core_dev->irq);
 
@@ -1272,7 +1276,7 @@ MODULE_DEVICE_TABLE(of, crypto4xx_match);
 
 static struct platform_driver crypto4xx_driver = {
 	.driver = {
-		.name = "crypto4xx",
+		.name = MODULE_NAME,
 		.of_match_table = crypto4xx_match,
 	},
 	.probe		= crypto4xx_probe,
@@ -1284,4 +1288,3 @@ module_platform_driver(crypto4xx_driver);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("James Hsiao <jhsiao@amcc.com>");
 MODULE_DESCRIPTION("Driver for AMCC PPC4xx crypto accelerator");
-

drivers/crypto/amcc/crypto4xx_core.h

@@ -24,6 +24,8 @@
 
 #include <crypto/internal/hash.h>
 
+#define MODULE_NAME "crypto4xx"
+
 #define PPC460SX_SDR0_SRST                      0x201
 #define PPC405EX_SDR0_SRST                      0x200
 #define PPC460EX_SDR0_SRST                      0x201
@@ -72,6 +74,7 @@ struct crypto4xx_device {
 	char *name;
 	u64  ce_phy_address;
 	void __iomem *ce_base;
+	void __iomem *trng_base;
 
 	void *pdr;			/* base address of packet
 					descriptor ring */
@@ -106,6 +109,7 @@ struct crypto4xx_core_device {
 	struct device *device;
 	struct platform_device *ofdev;
 	struct crypto4xx_device *dev;
+	struct hwrng *trng;
 	u32 int_status;
 	u32 irq;
 	struct tasklet_struct tasklet;

drivers/crypto/amcc/crypto4xx_reg_def.h

@@ -125,6 +125,7 @@
 #define PPC4XX_INTERRUPT_CLR			0x3ffff
 #define PPC4XX_PRNG_CTRL_AUTO_EN		0x3
 #define PPC4XX_DC_3DES_EN			1
+#define PPC4XX_TRNG_EN				0x00020000
 #define PPC4XX_INT_DESCR_CNT			4
 #define PPC4XX_INT_TIMEOUT_CNT			0
 #define PPC4XX_INT_CFG				1

drivers/crypto/amcc/crypto4xx_trng.c

@@ -0,0 +1,131 @@
+/*
+ * Generic PowerPC 44x RNG driver
+ *
+ * Copyright 2011 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/hw_random.h>
+#include <linux/delay.h>
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+#include <linux/io.h>
+
+#include "crypto4xx_core.h"
+#include "crypto4xx_trng.h"
+#include "crypto4xx_reg_def.h"
+
+#define PPC4XX_TRNG_CTRL	0x0008
+#define PPC4XX_TRNG_CTRL_DALM	0x20
+#define PPC4XX_TRNG_STAT	0x0004
+#define PPC4XX_TRNG_STAT_B	0x1
+#define PPC4XX_TRNG_DATA	0x0000
+
+static int ppc4xx_trng_data_present(struct hwrng *rng, int wait)
+{
+	struct crypto4xx_device *dev = (void *)rng->priv;
+	int busy, i, present = 0;
+
+	for (i = 0; i < 20; i++) {
+		busy = (in_le32(dev->trng_base + PPC4XX_TRNG_STAT) &
+			PPC4XX_TRNG_STAT_B);
+		if (!busy || !wait) {
+			present = 1;
+			break;
+		}
+		udelay(10);
+	}
+	return present;
+}
+
+static int ppc4xx_trng_data_read(struct hwrng *rng, u32 *data)
+{
+	struct crypto4xx_device *dev = (void *)rng->priv;
+	*data = in_le32(dev->trng_base + PPC4XX_TRNG_DATA);
+	return 4;
+}
+
+static void ppc4xx_trng_enable(struct crypto4xx_device *dev, bool enable)
+{
+	u32 device_ctrl;
+
+	device_ctrl = readl(dev->ce_base + CRYPTO4XX_DEVICE_CTRL);
+	if (enable)
+		device_ctrl |= PPC4XX_TRNG_EN;
+	else
+		device_ctrl &= ~PPC4XX_TRNG_EN;
+	writel(device_ctrl, dev->ce_base + CRYPTO4XX_DEVICE_CTRL);
+}
+
+static const struct of_device_id ppc4xx_trng_match[] = {
+	{ .compatible = "ppc4xx-rng", },
+	{ .compatible = "amcc,ppc460ex-rng", },
+	{ .compatible = "amcc,ppc440epx-rng", },
+	{},
+};
+
+void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev)
+{
+	struct crypto4xx_device *dev = core_dev->dev;
+	struct device_node *trng = NULL;
+	struct hwrng *rng = NULL;
+	int err;
+
+	/* Find the TRNG device node and map it */
+	trng = of_find_matching_node(NULL, ppc4xx_trng_match);
+	if (!trng || !of_device_is_available(trng))
+		return;
+
+	dev->trng_base = of_iomap(trng, 0);
+	of_node_put(trng);
+	if (!dev->trng_base)
+		goto err_out;
+
+	rng = kzalloc(sizeof(*rng), GFP_KERNEL);
+	if (!rng)
+		goto err_out;
+
+	rng->name = MODULE_NAME;
+	rng->data_present = ppc4xx_trng_data_present;
+	rng->data_read = ppc4xx_trng_data_read;
+	rng->priv = (unsigned long) dev;
+	core_dev->trng = rng;
+	ppc4xx_trng_enable(dev, true);
+	out_le32(dev->trng_base + PPC4XX_TRNG_CTRL, PPC4XX_TRNG_CTRL_DALM);
+	err = devm_hwrng_register(core_dev->device, core_dev->trng);
+	if (err) {
+		ppc4xx_trng_enable(dev, false);
+		dev_err(core_dev->device, "failed to register hwrng (%d).\n",
+			err);
+		goto err_out;
+	}
+	return;
+
+err_out:
+	of_node_put(trng);
+	iounmap(dev->trng_base);
+	kfree(rng);
+	dev->trng_base = NULL;
+	core_dev->trng = NULL;
+}
+
+void ppc4xx_trng_remove(struct crypto4xx_core_device *core_dev)
+{
+	if (core_dev && core_dev->trng) {
+		struct crypto4xx_device *dev = core_dev->dev;
+
+		devm_hwrng_unregister(core_dev->device, core_dev->trng);
+		ppc4xx_trng_enable(dev, false);
+		iounmap(dev->trng_base);
+		kfree(core_dev->trng);
+	}
+}
+
+MODULE_ALIAS("ppc4xx_rng");

drivers/crypto/amcc/crypto4xx_trng.h

@@ -0,0 +1,34 @@
+/**
+ * AMCC SoC PPC4xx Crypto Driver
+ *
+ * Copyright (c) 2008 Applied Micro Circuits Corporation.
+ * All rights reserved. James Hsiao <jhsiao@amcc.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * This file defines the security context
+ * associate format.
+ */
+
+#ifndef __CRYPTO4XX_TRNG_H__
+#define __CRYPTO4XX_TRNG_H__
+
+#ifdef CONFIG_HW_RANDOM_PPC4XX
+void ppc4xx_trng_probe(struct crypto4xx_core_device *core_dev);
+void ppc4xx_trng_remove(struct crypto4xx_core_device *core_dev);
+#else
+static inline void ppc4xx_trng_probe(
+	struct crypto4xx_device *dev __maybe_unused) { }
+static inline void ppc4xx_trng_remove(
+	struct crypto4xx_device *dev __maybe_unused) { }
+#endif
+
+#endif

drivers/crypto/caam/jr.c

@@ -248,7 +248,7 @@ static void caam_jr_dequeue(unsigned long devarg)
 struct device *caam_jr_alloc(void)
 {
 	struct caam_drv_private_jr *jrpriv, *min_jrpriv = NULL;
-	struct device *dev = NULL;
+	struct device *dev = ERR_PTR(-ENODEV);
 	int min_tfm_cnt	= INT_MAX;
 	int tfm_cnt;
 

drivers/crypto/ccp/Kconfig

@@ -3,6 +3,8 @@ config CRYPTO_DEV_CCP_DD
 	depends on CRYPTO_DEV_CCP
 	default m
 	select HW_RANDOM
+	select DMA_ENGINE
+	select DMADEVICES
 	select CRYPTO_SHA1
 	select CRYPTO_SHA256
 	help

drivers/crypto/ccp/Makefile

@@ -1,5 +1,9 @@
 obj-$(CONFIG_CRYPTO_DEV_CCP_DD) += ccp.o
-ccp-objs := ccp-dev.o ccp-ops.o ccp-dev-v3.o ccp-platform.o
+ccp-objs := ccp-dev.o \
+	    ccp-ops.o \
+	    ccp-dev-v3.o \
+	    ccp-platform.o \
+	    ccp-dmaengine.o
 ccp-$(CONFIG_PCI) += ccp-pci.o
 
 obj-$(CONFIG_CRYPTO_DEV_CCP_CRYPTO) += ccp-crypto.o

drivers/crypto/ccp/ccp-dev-v3.c

@@ -406,6 +406,11 @@ static int ccp_init(struct ccp_device *ccp)
 		goto e_kthread;
 	}
 
+	/* Register the DMA engine support */
+	ret = ccp_dmaengine_register(ccp);
+	if (ret)
+		goto e_hwrng;
+
 	ccp_add_device(ccp);
 
 	/* Enable interrupts */
@@ -413,6 +418,9 @@ static int ccp_init(struct ccp_device *ccp)
 
 	return 0;
 
+e_hwrng:
+	hwrng_unregister(&ccp->hwrng);
+
 e_kthread:
 	for (i = 0; i < ccp->cmd_q_count; i++)
 		if (ccp->cmd_q[i].kthread)
@@ -436,6 +444,9 @@ static void ccp_destroy(struct ccp_device *ccp)
 	/* Remove this device from the list of available units first */
 	ccp_del_device(ccp);
 
+	/* Unregister the DMA engine */
+	ccp_dmaengine_unregister(ccp);
+
 	/* Unregister the RNG */
 	hwrng_unregister(&ccp->hwrng);
 
@@ -515,7 +526,7 @@ static irqreturn_t ccp_irq_handler(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-static struct ccp_actions ccp3_actions = {
+static const struct ccp_actions ccp3_actions = {
 	.perform_aes = ccp_perform_aes,
 	.perform_xts_aes = ccp_perform_xts_aes,
 	.perform_sha = ccp_perform_sha,

drivers/crypto/ccp/ccp-dev.c

@@ -16,7 +16,7 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
-#include <linux/rwlock_types.h>
+#include <linux/spinlock_types.h>
 #include <linux/types.h>
 #include <linux/mutex.h>
 #include <linux/delay.h>

drivers/crypto/ccp/ccp-dev.h

@@ -22,6 +22,9 @@
 #include <linux/dmapool.h>
 #include <linux/hw_random.h>
 #include <linux/bitops.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+#include <linux/dmaengine.h>
 
 #define MAX_CCP_NAME_LEN		16
 #define MAX_DMAPOOL_NAME_LEN		32
@@ -159,7 +162,7 @@ struct ccp_actions {
 /* Structure to hold CCP version-specific values */
 struct ccp_vdata {
 	unsigned int version;
-	struct ccp_actions *perform;
+	const struct ccp_actions *perform;
 };
 
 extern struct ccp_vdata ccpv3;
@@ -167,6 +170,39 @@ extern struct ccp_vdata ccpv3;
 struct ccp_device;
 struct ccp_cmd;
 
+struct ccp_dma_cmd {
+	struct list_head entry;
+
+	struct ccp_cmd ccp_cmd;
+};
+
+struct ccp_dma_desc {
+	struct list_head entry;
+
+	struct ccp_device *ccp;
+
+	struct list_head pending;
+	struct list_head active;
+
+	enum dma_status status;
+	struct dma_async_tx_descriptor tx_desc;
+	size_t len;
+};
+
+struct ccp_dma_chan {
+	struct ccp_device *ccp;
+
+	spinlock_t lock;
+	struct list_head pending;
+	struct list_head active;
+	struct list_head complete;
+
+	struct tasklet_struct cleanup_tasklet;
+
+	enum dma_status status;
+	struct dma_chan dma_chan;
+};
+
 struct ccp_cmd_queue {
 	struct ccp_device *ccp;
 
@@ -260,6 +296,14 @@ struct ccp_device {
 	struct hwrng hwrng;
 	unsigned int hwrng_retries;
 
+	/*
+	 * Support for the CCP DMA capabilities
+	 */
+	struct dma_device dma_dev;
+	struct ccp_dma_chan *ccp_dma_chan;
+	struct kmem_cache *dma_cmd_cache;
+	struct kmem_cache *dma_desc_cache;
+
 	/*
 	 * A counter used to generate job-ids for cmds submitted to the CCP
 	 */
@@ -418,4 +462,7 @@ int ccp_cmd_queue_thread(void *data);
 
 int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd);
 
+int ccp_dmaengine_register(struct ccp_device *ccp);
+void ccp_dmaengine_unregister(struct ccp_device *ccp);
+
 #endif

drivers/crypto/ccp/ccp-dmaengine.c

@@ -0,0 +1,727 @@
+/*
+ * AMD Cryptographic Coprocessor (CCP) driver
+ *
+ * Copyright (C) 2016 Advanced Micro Devices, Inc.
+ *
+ * Author: Gary R Hook <gary.hook@amd.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/dmaengine.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/ccp.h>
+
+#include "ccp-dev.h"
+#include "../../dma/dmaengine.h"
+
+#define CCP_DMA_WIDTH(_mask)		\
+({					\
+	u64 mask = _mask + 1;		\
+	(mask == 0) ? 64 : fls64(mask);	\
+})
+
+static void ccp_free_cmd_resources(struct ccp_device *ccp,
+				   struct list_head *list)
+{
+	struct ccp_dma_cmd *cmd, *ctmp;
+
+	list_for_each_entry_safe(cmd, ctmp, list, entry) {
+		list_del(&cmd->entry);
+		kmem_cache_free(ccp->dma_cmd_cache, cmd);
+	}
+}
+
+static void ccp_free_desc_resources(struct ccp_device *ccp,
+				    struct list_head *list)
+{
+	struct ccp_dma_desc *desc, *dtmp;
+
+	list_for_each_entry_safe(desc, dtmp, list, entry) {
+		ccp_free_cmd_resources(ccp, &desc->active);
+		ccp_free_cmd_resources(ccp, &desc->pending);
+
+		list_del(&desc->entry);
+		kmem_cache_free(ccp->dma_desc_cache, desc);
+	}
+}
+
+static void ccp_free_chan_resources(struct dma_chan *dma_chan)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	unsigned long flags;
+
+	dev_dbg(chan->ccp->dev, "%s - chan=%p\n", __func__, chan);
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	ccp_free_desc_resources(chan->ccp, &chan->complete);
+	ccp_free_desc_resources(chan->ccp, &chan->active);
+	ccp_free_desc_resources(chan->ccp, &chan->pending);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+}
+
+static void ccp_cleanup_desc_resources(struct ccp_device *ccp,
+				       struct list_head *list)
+{
+	struct ccp_dma_desc *desc, *dtmp;
+
+	list_for_each_entry_safe_reverse(desc, dtmp, list, entry) {
+		if (!async_tx_test_ack(&desc->tx_desc))
+			continue;
+
+		dev_dbg(ccp->dev, "%s - desc=%p\n", __func__, desc);
+
+		ccp_free_cmd_resources(ccp, &desc->active);
+		ccp_free_cmd_resources(ccp, &desc->pending);
+
+		list_del(&desc->entry);
+		kmem_cache_free(ccp->dma_desc_cache, desc);
+	}
+}
+
+static void ccp_do_cleanup(unsigned long data)
+{
+	struct ccp_dma_chan *chan = (struct ccp_dma_chan *)data;
+	unsigned long flags;
+
+	dev_dbg(chan->ccp->dev, "%s - chan=%s\n", __func__,
+		dma_chan_name(&chan->dma_chan));
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	ccp_cleanup_desc_resources(chan->ccp, &chan->complete);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+}
+
+static int ccp_issue_next_cmd(struct ccp_dma_desc *desc)
+{
+	struct ccp_dma_cmd *cmd;
+	int ret;
+
+	cmd = list_first_entry(&desc->pending, struct ccp_dma_cmd, entry);
+	list_move(&cmd->entry, &desc->active);
+
+	dev_dbg(desc->ccp->dev, "%s - tx %d, cmd=%p\n", __func__,
+		desc->tx_desc.cookie, cmd);
+
+	ret = ccp_enqueue_cmd(&cmd->ccp_cmd);
+	if (!ret || (ret == -EINPROGRESS) || (ret == -EBUSY))
+		return 0;
+
+	dev_dbg(desc->ccp->dev, "%s - error: ret=%d, tx %d, cmd=%p\n", __func__,
+		ret, desc->tx_desc.cookie, cmd);
+
+	return ret;
+}
+
+static void ccp_free_active_cmd(struct ccp_dma_desc *desc)
+{
+	struct ccp_dma_cmd *cmd;
+
+	cmd = list_first_entry_or_null(&desc->active, struct ccp_dma_cmd,
+				       entry);
+	if (!cmd)
+		return;
+
+	dev_dbg(desc->ccp->dev, "%s - freeing tx %d cmd=%p\n",
+		__func__, desc->tx_desc.cookie, cmd);
+
+	list_del(&cmd->entry);
+	kmem_cache_free(desc->ccp->dma_cmd_cache, cmd);
+}
+
+static struct ccp_dma_desc *__ccp_next_dma_desc(struct ccp_dma_chan *chan,
+						struct ccp_dma_desc *desc)
+{
+	/* Move current DMA descriptor to the complete list */
+	if (desc)
+		list_move(&desc->entry, &chan->complete);
+
+	/* Get the next DMA descriptor on the active list */
+	desc = list_first_entry_or_null(&chan->active, struct ccp_dma_desc,
+					entry);
+
+	return desc;
+}
+
+static struct ccp_dma_desc *ccp_handle_active_desc(struct ccp_dma_chan *chan,
+						   struct ccp_dma_desc *desc)
+{
+	struct dma_async_tx_descriptor *tx_desc;
+	unsigned long flags;
+
+	/* Loop over descriptors until one is found with commands */
+	do {
+		if (desc) {
+			/* Remove the DMA command from the list and free it */
+			ccp_free_active_cmd(desc);
+
+			if (!list_empty(&desc->pending)) {
+				/* No errors, keep going */
+				if (desc->status != DMA_ERROR)
+					return desc;
+
+				/* Error, free remaining commands and move on */
+				ccp_free_cmd_resources(desc->ccp,
+						       &desc->pending);
+			}
+
+			tx_desc = &desc->tx_desc;
+		} else {
+			tx_desc = NULL;
+		}
+
+		spin_lock_irqsave(&chan->lock, flags);
+
+		if (desc) {
+			if (desc->status != DMA_ERROR)
+				desc->status = DMA_COMPLETE;
+
+			dev_dbg(desc->ccp->dev,
+				"%s - tx %d complete, status=%u\n", __func__,
+				desc->tx_desc.cookie, desc->status);
+
+			dma_cookie_complete(tx_desc);
+		}
+
+		desc = __ccp_next_dma_desc(chan, desc);
+
+		spin_unlock_irqrestore(&chan->lock, flags);
+
+		if (tx_desc) {
+			if (tx_desc->callback &&
+			    (tx_desc->flags & DMA_PREP_INTERRUPT))
+				tx_desc->callback(tx_desc->callback_param);
+
+			dma_run_dependencies(tx_desc);
+		}
+	} while (desc);
+
+	return NULL;
+}
+
+static struct ccp_dma_desc *__ccp_pending_to_active(struct ccp_dma_chan *chan)
+{
+	struct ccp_dma_desc *desc;
+
+	if (list_empty(&chan->pending))
+		return NULL;
+
+	desc = list_empty(&chan->active)
+		? list_first_entry(&chan->pending, struct ccp_dma_desc, entry)
+		: NULL;
+
+	list_splice_tail_init(&chan->pending, &chan->active);
+
+	return desc;
+}
+
+static void ccp_cmd_callback(void *data, int err)
+{
+	struct ccp_dma_desc *desc = data;
+	struct ccp_dma_chan *chan;
+	int ret;
+
+	if (err == -EINPROGRESS)
+		return;
+
+	chan = container_of(desc->tx_desc.chan, struct ccp_dma_chan,
+			    dma_chan);
+
+	dev_dbg(chan->ccp->dev, "%s - tx %d callback, err=%d\n",
+		__func__, desc->tx_desc.cookie, err);
+
+	if (err)
+		desc->status = DMA_ERROR;
+
+	while (true) {
+		/* Check for DMA descriptor completion */
+		desc = ccp_handle_active_desc(chan, desc);
+
+		/* Don't submit cmd if no descriptor or DMA is paused */
+		if (!desc || (chan->status == DMA_PAUSED))
+			break;
+
+		ret = ccp_issue_next_cmd(desc);
+		if (!ret)
+			break;
+
+		desc->status = DMA_ERROR;
+	}
+
+	tasklet_schedule(&chan->cleanup_tasklet);
+}
+
+static dma_cookie_t ccp_tx_submit(struct dma_async_tx_descriptor *tx_desc)
+{
+	struct ccp_dma_desc *desc = container_of(tx_desc, struct ccp_dma_desc,
+						 tx_desc);
+	struct ccp_dma_chan *chan;
+	dma_cookie_t cookie;
+	unsigned long flags;
+
+	chan = container_of(tx_desc->chan, struct ccp_dma_chan, dma_chan);
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	cookie = dma_cookie_assign(tx_desc);
+	list_add_tail(&desc->entry, &chan->pending);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+
+	dev_dbg(chan->ccp->dev, "%s - added tx descriptor %d to pending list\n",
+		__func__, cookie);
+
+	return cookie;
+}
+
+static struct ccp_dma_cmd *ccp_alloc_dma_cmd(struct ccp_dma_chan *chan)
+{
+	struct ccp_dma_cmd *cmd;
+
+	cmd = kmem_cache_alloc(chan->ccp->dma_cmd_cache, GFP_NOWAIT);
+	if (cmd)
+		memset(cmd, 0, sizeof(*cmd));
+
+	return cmd;
+}
+
+static struct ccp_dma_desc *ccp_alloc_dma_desc(struct ccp_dma_chan *chan,
+					       unsigned long flags)
+{
+	struct ccp_dma_desc *desc;
+
+	desc = kmem_cache_alloc(chan->ccp->dma_desc_cache, GFP_NOWAIT);
+	if (!desc)
+		return NULL;
+
+	memset(desc, 0, sizeof(*desc));
+
+	dma_async_tx_descriptor_init(&desc->tx_desc, &chan->dma_chan);
+	desc->tx_desc.flags = flags;
+	desc->tx_desc.tx_submit = ccp_tx_submit;
+	desc->ccp = chan->ccp;
+	INIT_LIST_HEAD(&desc->pending);
+	INIT_LIST_HEAD(&desc->active);
+	desc->status = DMA_IN_PROGRESS;
+
+	return desc;
+}
+
+static struct ccp_dma_desc *ccp_create_desc(struct dma_chan *dma_chan,
+					    struct scatterlist *dst_sg,
+					    unsigned int dst_nents,
+					    struct scatterlist *src_sg,
+					    unsigned int src_nents,
+					    unsigned long flags)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_device *ccp = chan->ccp;
+	struct ccp_dma_desc *desc;
+	struct ccp_dma_cmd *cmd;
+	struct ccp_cmd *ccp_cmd;
+	struct ccp_passthru_nomap_engine *ccp_pt;
+	unsigned int src_offset, src_len;
+	unsigned int dst_offset, dst_len;
+	unsigned int len;
+	unsigned long sflags;
+	size_t total_len;
+
+	if (!dst_sg || !src_sg)
+		return NULL;
+
+	if (!dst_nents || !src_nents)
+		return NULL;
+
+	desc = ccp_alloc_dma_desc(chan, flags);
+	if (!desc)
+		return NULL;
+
+	total_len = 0;
+
+	src_len = sg_dma_len(src_sg);
+	src_offset = 0;
+
+	dst_len = sg_dma_len(dst_sg);
+	dst_offset = 0;
+
+	while (true) {
+		if (!src_len) {
+			src_nents--;
+			if (!src_nents)
+				break;
+
+			src_sg = sg_next(src_sg);
+			if (!src_sg)
+				break;
+
+			src_len = sg_dma_len(src_sg);
+			src_offset = 0;
+			continue;
+		}
+
+		if (!dst_len) {
+			dst_nents--;
+			if (!dst_nents)
+				break;
+
+			dst_sg = sg_next(dst_sg);
+			if (!dst_sg)
+				break;
+
+			dst_len = sg_dma_len(dst_sg);
+			dst_offset = 0;
+			continue;
+		}
+
+		len = min(dst_len, src_len);
+
+		cmd = ccp_alloc_dma_cmd(chan);
+		if (!cmd)
+			goto err;
+
+		ccp_cmd = &cmd->ccp_cmd;
+		ccp_pt = &ccp_cmd->u.passthru_nomap;
+		ccp_cmd->flags = CCP_CMD_MAY_BACKLOG;
+		ccp_cmd->flags |= CCP_CMD_PASSTHRU_NO_DMA_MAP;
+		ccp_cmd->engine = CCP_ENGINE_PASSTHRU;
+		ccp_pt->bit_mod = CCP_PASSTHRU_BITWISE_NOOP;
+		ccp_pt->byte_swap = CCP_PASSTHRU_BYTESWAP_NOOP;
+		ccp_pt->src_dma = sg_dma_address(src_sg) + src_offset;
+		ccp_pt->dst_dma = sg_dma_address(dst_sg) + dst_offset;
+		ccp_pt->src_len = len;
+		ccp_pt->final = 1;
+		ccp_cmd->callback = ccp_cmd_callback;
+		ccp_cmd->data = desc;
+
+		list_add_tail(&cmd->entry, &desc->pending);
+
+		dev_dbg(ccp->dev,
+			"%s - cmd=%p, src=%pad, dst=%pad, len=%llu\n", __func__,
+			cmd, &ccp_pt->src_dma,
+			&ccp_pt->dst_dma, ccp_pt->src_len);
+
+		total_len += len;
+
+		src_len -= len;
+		src_offset += len;
+
+		dst_len -= len;
+		dst_offset += len;
+	}
+
+	desc->len = total_len;
+
+	if (list_empty(&desc->pending))
+		goto err;
+
+	dev_dbg(ccp->dev, "%s - desc=%p\n", __func__, desc);
+
+	spin_lock_irqsave(&chan->lock, sflags);
+
+	list_add_tail(&desc->entry, &chan->pending);
+
+	spin_unlock_irqrestore(&chan->lock, sflags);
+
+	return desc;
+
+err:
+	ccp_free_cmd_resources(ccp, &desc->pending);
+	kmem_cache_free(ccp->dma_desc_cache, desc);
+
+	return NULL;
+}
+
+static struct dma_async_tx_descriptor *ccp_prep_dma_memcpy(
+	struct dma_chan *dma_chan, dma_addr_t dst, dma_addr_t src, size_t len,
+	unsigned long flags)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+	struct scatterlist dst_sg, src_sg;
+
+	dev_dbg(chan->ccp->dev,
+		"%s - src=%pad, dst=%pad, len=%zu, flags=%#lx\n",
+		__func__, &src, &dst, len, flags);
+
+	sg_init_table(&dst_sg, 1);
+	sg_dma_address(&dst_sg) = dst;
+	sg_dma_len(&dst_sg) = len;
+
+	sg_init_table(&src_sg, 1);
+	sg_dma_address(&src_sg) = src;
+	sg_dma_len(&src_sg) = len;
+
+	desc = ccp_create_desc(dma_chan, &dst_sg, 1, &src_sg, 1, flags);
+	if (!desc)
+		return NULL;
+
+	return &desc->tx_desc;
+}
+
+static struct dma_async_tx_descriptor *ccp_prep_dma_sg(
+	struct dma_chan *dma_chan, struct scatterlist *dst_sg,
+	unsigned int dst_nents, struct scatterlist *src_sg,
+	unsigned int src_nents, unsigned long flags)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+
+	dev_dbg(chan->ccp->dev,
+		"%s - src=%p, src_nents=%u dst=%p, dst_nents=%u, flags=%#lx\n",
+		__func__, src_sg, src_nents, dst_sg, dst_nents, flags);
+
+	desc = ccp_create_desc(dma_chan, dst_sg, dst_nents, src_sg, src_nents,
+			       flags);
+	if (!desc)
+		return NULL;
+
+	return &desc->tx_desc;
+}
+
+static struct dma_async_tx_descriptor *ccp_prep_dma_interrupt(
+	struct dma_chan *dma_chan, unsigned long flags)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+
+	desc = ccp_alloc_dma_desc(chan, flags);
+	if (!desc)
+		return NULL;
+
+	return &desc->tx_desc;
+}
+
+static void ccp_issue_pending(struct dma_chan *dma_chan)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+	unsigned long flags;
+
+	dev_dbg(chan->ccp->dev, "%s\n", __func__);
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	desc = __ccp_pending_to_active(chan);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+
+	/* If there was nothing active, start processing */
+	if (desc)
+		ccp_cmd_callback(desc, 0);
+}
+
+static enum dma_status ccp_tx_status(struct dma_chan *dma_chan,
+				     dma_cookie_t cookie,
+				     struct dma_tx_state *state)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+	enum dma_status ret;
+	unsigned long flags;
+
+	if (chan->status == DMA_PAUSED) {
+		ret = DMA_PAUSED;
+		goto out;
+	}
+
+	ret = dma_cookie_status(dma_chan, cookie, state);
+	if (ret == DMA_COMPLETE) {
+		spin_lock_irqsave(&chan->lock, flags);
+
+		/* Get status from complete chain, if still there */
+		list_for_each_entry(desc, &chan->complete, entry) {
+			if (desc->tx_desc.cookie != cookie)
+				continue;
+
+			ret = desc->status;
+			break;
+		}
+
+		spin_unlock_irqrestore(&chan->lock, flags);
+	}
+
+out:
+	dev_dbg(chan->ccp->dev, "%s - %u\n", __func__, ret);
+
+	return ret;
+}
+
+static int ccp_pause(struct dma_chan *dma_chan)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+
+	chan->status = DMA_PAUSED;
+
+	/*TODO: Wait for active DMA to complete before returning? */
+
+	return 0;
+}
+
+static int ccp_resume(struct dma_chan *dma_chan)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	struct ccp_dma_desc *desc;
+	unsigned long flags;
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	desc = list_first_entry_or_null(&chan->active, struct ccp_dma_desc,
+					entry);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+
+	/* Indicate the channel is running again */
+	chan->status = DMA_IN_PROGRESS;
+
+	/* If there was something active, re-start */
+	if (desc)
+		ccp_cmd_callback(desc, 0);
+
+	return 0;
+}
+
+static int ccp_terminate_all(struct dma_chan *dma_chan)
+{
+	struct ccp_dma_chan *chan = container_of(dma_chan, struct ccp_dma_chan,
+						 dma_chan);
+	unsigned long flags;
+
+	dev_dbg(chan->ccp->dev, "%s\n", __func__);
+
+	/*TODO: Wait for active DMA to complete before continuing */
+
+	spin_lock_irqsave(&chan->lock, flags);
+
+	/*TODO: Purge the complete list? */
+	ccp_free_desc_resources(chan->ccp, &chan->active);
+	ccp_free_desc_resources(chan->ccp, &chan->pending);
+
+	spin_unlock_irqrestore(&chan->lock, flags);
+
+	return 0;
+}
+
+int ccp_dmaengine_register(struct ccp_device *ccp)
+{
+	struct ccp_dma_chan *chan;
+	struct dma_device *dma_dev = &ccp->dma_dev;
+	struct dma_chan *dma_chan;
+	char *dma_cmd_cache_name;
+	char *dma_desc_cache_name;
+	unsigned int i;
+	int ret;
+
+	ccp->ccp_dma_chan = devm_kcalloc(ccp->dev, ccp->cmd_q_count,
+					 sizeof(*(ccp->ccp_dma_chan)),
+					 GFP_KERNEL);
+	if (!ccp->ccp_dma_chan)
+		return -ENOMEM;
+
+	dma_cmd_cache_name = devm_kasprintf(ccp->dev, GFP_KERNEL,
+					    "%s-dmaengine-cmd-cache",
+					    ccp->name);
+	if (!dma_cmd_cache_name)
+		return -ENOMEM;
+
+	ccp->dma_cmd_cache = kmem_cache_create(dma_cmd_cache_name,
+					       sizeof(struct ccp_dma_cmd),
+					       sizeof(void *),
+					       SLAB_HWCACHE_ALIGN, NULL);
+	if (!ccp->dma_cmd_cache)
+		return -ENOMEM;
+
+	dma_desc_cache_name = devm_kasprintf(ccp->dev, GFP_KERNEL,
+					     "%s-dmaengine-desc-cache",
+					     ccp->name);
+	if (!dma_cmd_cache_name)
+		return -ENOMEM;
+	ccp->dma_desc_cache = kmem_cache_create(dma_desc_cache_name,
+						sizeof(struct ccp_dma_desc),
+						sizeof(void *),
+						SLAB_HWCACHE_ALIGN, NULL);
+	if (!ccp->dma_desc_cache) {
+		ret = -ENOMEM;
+		goto err_cache;
+	}
+
+	dma_dev->dev = ccp->dev;
+	dma_dev->src_addr_widths = CCP_DMA_WIDTH(dma_get_mask(ccp->dev));
+	dma_dev->dst_addr_widths = CCP_DMA_WIDTH(dma_get_mask(ccp->dev));
+	dma_dev->directions = DMA_MEM_TO_MEM;
+	dma_dev->residue_granularity = DMA_RESIDUE_GRANULARITY_DESCRIPTOR;
+	dma_cap_set(DMA_MEMCPY, dma_dev->cap_mask);
+	dma_cap_set(DMA_SG, dma_dev->cap_mask);
+	dma_cap_set(DMA_INTERRUPT, dma_dev->cap_mask);
+
+	INIT_LIST_HEAD(&dma_dev->channels);
+	for (i = 0; i < ccp->cmd_q_count; i++) {
+		chan = ccp->ccp_dma_chan + i;
+		dma_chan = &chan->dma_chan;
+
+		chan->ccp = ccp;
+
+		spin_lock_init(&chan->lock);
+		INIT_LIST_HEAD(&chan->pending);
+		INIT_LIST_HEAD(&chan->active);
+		INIT_LIST_HEAD(&chan->complete);
+
+		tasklet_init(&chan->cleanup_tasklet, ccp_do_cleanup,
+			     (unsigned long)chan);
+
+		dma_chan->device = dma_dev;
+		dma_cookie_init(dma_chan);
+
+		list_add_tail(&dma_chan->device_node, &dma_dev->channels);
+	}
+
+	dma_dev->device_free_chan_resources = ccp_free_chan_resources;
+	dma_dev->device_prep_dma_memcpy = ccp_prep_dma_memcpy;
+	dma_dev->device_prep_dma_sg = ccp_prep_dma_sg;
+	dma_dev->device_prep_dma_interrupt = ccp_prep_dma_interrupt;
+	dma_dev->device_issue_pending = ccp_issue_pending;
+	dma_dev->device_tx_status = ccp_tx_status;
+	dma_dev->device_pause = ccp_pause;
+	dma_dev->device_resume = ccp_resume;
+	dma_dev->device_terminate_all = ccp_terminate_all;
+
+	ret = dma_async_device_register(dma_dev);
+	if (ret)
+		goto err_reg;
+
+	return 0;
+
+err_reg:
+	kmem_cache_destroy(ccp->dma_desc_cache);
+
+err_cache:
+	kmem_cache_destroy(ccp->dma_cmd_cache);
+
+	return ret;
+}
+
+void ccp_dmaengine_unregister(struct ccp_device *ccp)
+{
+	struct dma_device *dma_dev = &ccp->dma_dev;
+
+	dma_async_device_unregister(dma_dev);
+
+	kmem_cache_destroy(ccp->dma_desc_cache);
+	kmem_cache_destroy(ccp->dma_cmd_cache);
+}

drivers/crypto/ccp/ccp-ops.c

@@ -1427,6 +1427,70 @@ e_mask:
 	return ret;
 }
 
+static int ccp_run_passthru_nomap_cmd(struct ccp_cmd_queue *cmd_q,
+				      struct ccp_cmd *cmd)
+{
+	struct ccp_passthru_nomap_engine *pt = &cmd->u.passthru_nomap;
+	struct ccp_dm_workarea mask;
+	struct ccp_op op;
+	int ret;
+
+	if (!pt->final && (pt->src_len & (CCP_PASSTHRU_BLOCKSIZE - 1)))
+		return -EINVAL;
+
+	if (!pt->src_dma || !pt->dst_dma)
+		return -EINVAL;
+
+	if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
+		if (pt->mask_len != CCP_PASSTHRU_MASKSIZE)
+			return -EINVAL;
+		if (!pt->mask)
+			return -EINVAL;
+	}
+
+	BUILD_BUG_ON(CCP_PASSTHRU_KSB_COUNT != 1);
+
+	memset(&op, 0, sizeof(op));
+	op.cmd_q = cmd_q;
+	op.jobid = ccp_gen_jobid(cmd_q->ccp);
+
+	if (pt->bit_mod != CCP_PASSTHRU_BITWISE_NOOP) {
+		/* Load the mask */
+		op.ksb_key = cmd_q->ksb_key;
+
+		mask.length = pt->mask_len;
+		mask.dma.address = pt->mask;
+		mask.dma.length = pt->mask_len;
+
+		ret = ccp_copy_to_ksb(cmd_q, &mask, op.jobid, op.ksb_key,
+				     CCP_PASSTHRU_BYTESWAP_NOOP);
+		if (ret) {
+			cmd->engine_error = cmd_q->cmd_error;
+			return ret;
+		}
+	}
+
+	/* Send data to the CCP Passthru engine */
+	op.eom = 1;
+	op.soc = 1;
+
+	op.src.type = CCP_MEMTYPE_SYSTEM;
+	op.src.u.dma.address = pt->src_dma;
+	op.src.u.dma.offset = 0;
+	op.src.u.dma.length = pt->src_len;
+
+	op.dst.type = CCP_MEMTYPE_SYSTEM;
+	op.dst.u.dma.address = pt->dst_dma;
+	op.dst.u.dma.offset = 0;
+	op.dst.u.dma.length = pt->src_len;
+
+	ret = cmd_q->ccp->vdata->perform->perform_passthru(&op);
+	if (ret)
+		cmd->engine_error = cmd_q->cmd_error;
+
+	return ret;
+}
+
 static int ccp_run_ecc_mm_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
 {
 	struct ccp_ecc_engine *ecc = &cmd->u.ecc;
@@ -1762,7 +1826,10 @@ int ccp_run_cmd(struct ccp_cmd_queue *cmd_q, struct ccp_cmd *cmd)
 		ret = ccp_run_rsa_cmd(cmd_q, cmd);
 		break;
 	case CCP_ENGINE_PASSTHRU:
-		ret = ccp_run_passthru_cmd(cmd_q, cmd);
+		if (cmd->flags & CCP_CMD_PASSTHRU_NO_DMA_MAP)
+			ret = ccp_run_passthru_nomap_cmd(cmd_q, cmd);
+		else
+			ret = ccp_run_passthru_cmd(cmd_q, cmd);
 		break;
 	case CCP_ENGINE_ECC:
 		ret = ccp_run_ecc_cmd(cmd_q, cmd);

drivers/crypto/marvell/cesa.c

@@ -475,18 +475,18 @@ static int mv_cesa_probe(struct platform_device *pdev)
 		engine->regs = cesa->regs + CESA_ENGINE_OFF(i);
 
 		if (dram && cesa->caps->has_tdma)
-			mv_cesa_conf_mbus_windows(&cesa->engines[i], dram);
+			mv_cesa_conf_mbus_windows(engine, dram);
 
-		writel(0, cesa->engines[i].regs + CESA_SA_INT_STATUS);
+		writel(0, engine->regs + CESA_SA_INT_STATUS);
 		writel(CESA_SA_CFG_STOP_DIG_ERR,
-		       cesa->engines[i].regs + CESA_SA_CFG);
+		       engine->regs + CESA_SA_CFG);
 		writel(engine->sram_dma & CESA_SA_SRAM_MSK,
-		       cesa->engines[i].regs + CESA_SA_DESC_P0);
+		       engine->regs + CESA_SA_DESC_P0);
 
 		ret = devm_request_threaded_irq(dev, irq, NULL, mv_cesa_int,
 						IRQF_ONESHOT,
 						dev_name(&pdev->dev),
-						&cesa->engines[i]);
+						engine);
 		if (ret)
 			goto err_cleanup;
 	}

drivers/crypto/marvell/hash.c

@@ -768,8 +768,7 @@ static int mv_cesa_ahash_export(struct ahash_request *req, void *hash,
 	*len = creq->len;
 	memcpy(hash, creq->state, digsize);
 	memset(cache, 0, blocksize);
-	if (creq->cache)
-		memcpy(cache, creq->cache, creq->cache_ptr);
+	memcpy(cache, creq->cache, creq->cache_ptr);
 
 	return 0;
 }

drivers/crypto/marvell/tdma.c

@@ -99,12 +99,11 @@ mv_cesa_dma_add_desc(struct mv_cesa_tdma_chain *chain, gfp_t flags)
 	struct mv_cesa_tdma_desc *new_tdma = NULL;
 	dma_addr_t dma_handle;
 
-	new_tdma = dma_pool_alloc(cesa_dev->dma->tdma_desc_pool, flags,
-				  &dma_handle);
+	new_tdma = dma_pool_zalloc(cesa_dev->dma->tdma_desc_pool, flags,
+				   &dma_handle);
 	if (!new_tdma)
 		return ERR_PTR(-ENOMEM);
 
-	memset(new_tdma, 0, sizeof(*new_tdma));
 	new_tdma->cur_dma = dma_handle;
 	if (chain->last) {
 		chain->last->next_dma = cpu_to_le32(dma_handle);

drivers/crypto/mxc-scc.c

@@ -0,0 +1,765 @@
+/*
+ * Copyright (C) 2016 Pengutronix, Steffen Trumtrar <kernel@pengutronix.de>
+ *
+ * The driver is based on information gathered from
+ * drivers/mxc/security/mxc_scc.c which can be found in
+ * the Freescale linux-2.6-imx.git in the imx_2.6.35_maintain branch.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+#include <linux/clk.h>
+#include <linux/crypto.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+
+#include <crypto/algapi.h>
+#include <crypto/des.h>
+
+/* Secure Memory (SCM) registers */
+#define SCC_SCM_RED_START		0x0000
+#define SCC_SCM_BLACK_START		0x0004
+#define SCC_SCM_LENGTH			0x0008
+#define SCC_SCM_CTRL			0x000C
+#define SCC_SCM_STATUS			0x0010
+#define SCC_SCM_ERROR_STATUS		0x0014
+#define SCC_SCM_INTR_CTRL		0x0018
+#define SCC_SCM_CFG			0x001C
+#define SCC_SCM_INIT_VECTOR_0		0x0020
+#define SCC_SCM_INIT_VECTOR_1		0x0024
+#define SCC_SCM_RED_MEMORY		0x0400
+#define SCC_SCM_BLACK_MEMORY		0x0800
+
+/* Security Monitor (SMN) Registers */
+#define SCC_SMN_STATUS			0x1000
+#define SCC_SMN_COMMAND		0x1004
+#define SCC_SMN_SEQ_START		0x1008
+#define SCC_SMN_SEQ_END		0x100C
+#define SCC_SMN_SEQ_CHECK		0x1010
+#define SCC_SMN_BIT_COUNT		0x1014
+#define SCC_SMN_BITBANK_INC_SIZE	0x1018
+#define SCC_SMN_BITBANK_DECREMENT	0x101C
+#define SCC_SMN_COMPARE_SIZE		0x1020
+#define SCC_SMN_PLAINTEXT_CHECK	0x1024
+#define SCC_SMN_CIPHERTEXT_CHECK	0x1028
+#define SCC_SMN_TIMER_IV		0x102C
+#define SCC_SMN_TIMER_CONTROL		0x1030
+#define SCC_SMN_DEBUG_DETECT_STAT	0x1034
+#define SCC_SMN_TIMER			0x1038
+
+#define SCC_SCM_CTRL_START_CIPHER	BIT(2)
+#define SCC_SCM_CTRL_CBC_MODE		BIT(1)
+#define SCC_SCM_CTRL_DECRYPT_MODE	BIT(0)
+
+#define SCC_SCM_STATUS_LEN_ERR		BIT(12)
+#define SCC_SCM_STATUS_SMN_UNBLOCKED	BIT(11)
+#define SCC_SCM_STATUS_CIPHERING_DONE	BIT(10)
+#define SCC_SCM_STATUS_ZEROIZING_DONE	BIT(9)
+#define SCC_SCM_STATUS_INTR_STATUS	BIT(8)
+#define SCC_SCM_STATUS_SEC_KEY		BIT(7)
+#define SCC_SCM_STATUS_INTERNAL_ERR	BIT(6)
+#define SCC_SCM_STATUS_BAD_SEC_KEY	BIT(5)
+#define SCC_SCM_STATUS_ZEROIZE_FAIL	BIT(4)
+#define SCC_SCM_STATUS_SMN_BLOCKED	BIT(3)
+#define SCC_SCM_STATUS_CIPHERING	BIT(2)
+#define SCC_SCM_STATUS_ZEROIZING	BIT(1)
+#define SCC_SCM_STATUS_BUSY		BIT(0)
+
+#define SCC_SMN_STATUS_STATE_MASK	0x0000001F
+#define SCC_SMN_STATE_START		0x0
+/* The SMN is zeroizing its RAM during reset */
+#define SCC_SMN_STATE_ZEROIZE_RAM	0x5
+/* SMN has passed internal checks */
+#define SCC_SMN_STATE_HEALTH_CHECK	0x6
+/* Fatal Security Violation. SMN is locked, SCM is inoperative. */
+#define SCC_SMN_STATE_FAIL		0x9
+/* SCC is in secure state. SCM is using secret key. */
+#define SCC_SMN_STATE_SECURE		0xA
+/* SCC is not secure. SCM is using default key. */
+#define SCC_SMN_STATE_NON_SECURE	0xC
+
+#define SCC_SCM_INTR_CTRL_ZEROIZE_MEM	BIT(2)
+#define SCC_SCM_INTR_CTRL_CLR_INTR	BIT(1)
+#define SCC_SCM_INTR_CTRL_MASK_INTR	BIT(0)
+
+/* Size, in blocks, of Red memory. */
+#define SCC_SCM_CFG_BLACK_SIZE_MASK	0x07fe0000
+#define SCC_SCM_CFG_BLACK_SIZE_SHIFT	17
+/* Size, in blocks, of Black memory. */
+#define SCC_SCM_CFG_RED_SIZE_MASK	0x0001ff80
+#define SCC_SCM_CFG_RED_SIZE_SHIFT	7
+/* Number of bytes per block. */
+#define SCC_SCM_CFG_BLOCK_SIZE_MASK	0x0000007f
+
+#define SCC_SMN_COMMAND_TAMPER_LOCK	BIT(4)
+#define SCC_SMN_COMMAND_CLR_INTR	BIT(3)
+#define SCC_SMN_COMMAND_CLR_BIT_BANK	BIT(2)
+#define SCC_SMN_COMMAND_EN_INTR	BIT(1)
+#define SCC_SMN_COMMAND_SET_SOFTWARE_ALARM  BIT(0)
+
+#define SCC_KEY_SLOTS			20
+#define SCC_MAX_KEY_SIZE		32
+#define SCC_KEY_SLOT_SIZE		32
+
+#define SCC_CRC_CCITT_START		0xFFFF
+
+/*
+ * Offset into each RAM of the base of the area which is not
+ * used for Stored Keys.
+ */
+#define SCC_NON_RESERVED_OFFSET	(SCC_KEY_SLOTS * SCC_KEY_SLOT_SIZE)
+
+/* Fixed padding for appending to plaintext to fill out a block */
+static char scc_block_padding[8] = { 0x80, 0, 0, 0, 0, 0, 0, 0 };
+
+enum mxc_scc_state {
+	SCC_STATE_OK,
+	SCC_STATE_UNIMPLEMENTED,
+	SCC_STATE_FAILED
+};
+
+struct mxc_scc {
+	struct device		*dev;
+	void __iomem		*base;
+	struct clk		*clk;
+	bool			hw_busy;
+	spinlock_t		lock;
+	struct crypto_queue	queue;
+	struct crypto_async_request *req;
+	int			block_size_bytes;
+	int			black_ram_size_blocks;
+	int			memory_size_bytes;
+	int			bytes_remaining;
+
+	void __iomem		*red_memory;
+	void __iomem		*black_memory;
+};
+
+struct mxc_scc_ctx {
+	struct mxc_scc		*scc;
+	struct scatterlist	*sg_src;
+	size_t			src_nents;
+	struct scatterlist	*sg_dst;
+	size_t			dst_nents;
+	unsigned int		offset;
+	unsigned int		size;
+	unsigned int		ctrl;
+};
+
+struct mxc_scc_crypto_tmpl {
+	struct mxc_scc *scc;
+	struct crypto_alg alg;
+};
+
+static int mxc_scc_get_data(struct mxc_scc_ctx *ctx,
+			    struct crypto_async_request *req)
+{
+	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
+	struct mxc_scc *scc = ctx->scc;
+	size_t len;
+	void __iomem *from;
+
+	if (ctx->ctrl & SCC_SCM_CTRL_DECRYPT_MODE)
+		from = scc->red_memory;
+	else
+		from = scc->black_memory;
+
+	dev_dbg(scc->dev, "pcopy: from 0x%p %d bytes\n", from,
+		ctx->dst_nents * 8);
+	len = sg_pcopy_from_buffer(ablkreq->dst, ctx->dst_nents,
+				   from, ctx->size, ctx->offset);
+	if (!len) {
+		dev_err(scc->dev, "pcopy err from 0x%p (len=%d)\n", from, len);
+		return -EINVAL;
+	}
+
+#ifdef DEBUG
+	print_hex_dump(KERN_ERR,
+		       "red memory@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       scc->red_memory, ctx->size, 1);
+	print_hex_dump(KERN_ERR,
+		       "black memory@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       scc->black_memory, ctx->size, 1);
+#endif
+
+	ctx->offset += len;
+
+	if (ctx->offset < ablkreq->nbytes)
+		return -EINPROGRESS;
+
+	return 0;
+}
+
+static int mxc_scc_ablkcipher_req_init(struct ablkcipher_request *req,
+				       struct mxc_scc_ctx *ctx)
+{
+	struct mxc_scc *scc = ctx->scc;
+	int nents;
+
+	nents = sg_nents_for_len(req->src, req->nbytes);
+	if (nents < 0) {
+		dev_err(scc->dev, "Invalid number of src SC");
+		return nents;
+	}
+	ctx->src_nents = nents;
+
+	nents = sg_nents_for_len(req->dst, req->nbytes);
+	if (nents < 0) {
+		dev_err(scc->dev, "Invalid number of dst SC");
+		return nents;
+	}
+	ctx->dst_nents = nents;
+
+	ctx->size = 0;
+	ctx->offset = 0;
+
+	return 0;
+}
+
+static int mxc_scc_ablkcipher_req_complete(struct crypto_async_request *req,
+					   struct mxc_scc_ctx *ctx,
+					   int result)
+{
+	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
+	struct mxc_scc *scc = ctx->scc;
+
+	scc->req = NULL;
+	scc->bytes_remaining = scc->memory_size_bytes;
+
+	if (ctx->ctrl & SCC_SCM_CTRL_CBC_MODE)
+		memcpy(ablkreq->info, scc->base + SCC_SCM_INIT_VECTOR_0,
+		       scc->block_size_bytes);
+
+	req->complete(req, result);
+	scc->hw_busy = false;
+
+	return 0;
+}
+
+static int mxc_scc_put_data(struct mxc_scc_ctx *ctx,
+			     struct ablkcipher_request *req)
+{
+	u8 padding_buffer[sizeof(u16) + sizeof(scc_block_padding)];
+	size_t len = min_t(size_t, req->nbytes - ctx->offset,
+			   ctx->scc->bytes_remaining);
+	unsigned int padding_byte_count = 0;
+	struct mxc_scc *scc = ctx->scc;
+	void __iomem *to;
+
+	if (ctx->ctrl & SCC_SCM_CTRL_DECRYPT_MODE)
+		to = scc->black_memory;
+	else
+		to = scc->red_memory;
+
+	if (ctx->ctrl & SCC_SCM_CTRL_CBC_MODE && req->info)
+		memcpy(scc->base + SCC_SCM_INIT_VECTOR_0, req->info,
+		       scc->block_size_bytes);
+
+	len = sg_pcopy_to_buffer(req->src, ctx->src_nents,
+				 to, len, ctx->offset);
+	if (!len) {
+		dev_err(scc->dev, "pcopy err to 0x%p (len=%d)\n", to, len);
+		return -EINVAL;
+	}
+
+	ctx->size = len;
+
+#ifdef DEBUG
+	dev_dbg(scc->dev, "copied %d bytes to 0x%p\n", len, to);
+	print_hex_dump(KERN_ERR,
+		       "init vector0@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       scc->base + SCC_SCM_INIT_VECTOR_0, scc->block_size_bytes,
+		       1);
+	print_hex_dump(KERN_ERR,
+		       "red memory@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       scc->red_memory, ctx->size, 1);
+	print_hex_dump(KERN_ERR,
+		       "black memory@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       scc->black_memory, ctx->size, 1);
+#endif
+
+	scc->bytes_remaining -= len;
+
+	padding_byte_count = len % scc->block_size_bytes;
+
+	if (padding_byte_count) {
+		memcpy(padding_buffer, scc_block_padding, padding_byte_count);
+		memcpy(to + len, padding_buffer, padding_byte_count);
+		ctx->size += padding_byte_count;
+	}
+
+#ifdef DEBUG
+	print_hex_dump(KERN_ERR,
+		       "data to encrypt@"__stringify(__LINE__)": ",
+		       DUMP_PREFIX_ADDRESS, 16, 4,
+		       to, ctx->size, 1);
+#endif
+
+	return 0;
+}
+
+static void mxc_scc_ablkcipher_next(struct mxc_scc_ctx *ctx,
+				    struct crypto_async_request *req)
+{
+	struct ablkcipher_request *ablkreq = ablkcipher_request_cast(req);
+	struct mxc_scc *scc = ctx->scc;
+	int err;
+
+	dev_dbg(scc->dev, "dispatch request (nbytes=%d, src=%p, dst=%p)\n",
+		ablkreq->nbytes, ablkreq->src, ablkreq->dst);
+
+	writel(0, scc->base + SCC_SCM_ERROR_STATUS);
+
+	err = mxc_scc_put_data(ctx, ablkreq);
+	if (err) {
+		mxc_scc_ablkcipher_req_complete(req, ctx, err);
+		return;
+	}
+
+	dev_dbg(scc->dev, "Start encryption (0x%p/0x%p)\n",
+		(void *)readl(scc->base + SCC_SCM_RED_START),
+		(void *)readl(scc->base + SCC_SCM_BLACK_START));
+
+	/* clear interrupt control registers */
+	writel(SCC_SCM_INTR_CTRL_CLR_INTR,
+	       scc->base + SCC_SCM_INTR_CTRL);
+
+	writel((ctx->size / ctx->scc->block_size_bytes) - 1,
+	       scc->base + SCC_SCM_LENGTH);
+
+	dev_dbg(scc->dev, "Process %d block(s) in 0x%p\n",
+		ctx->size / ctx->scc->block_size_bytes,
+		(ctx->ctrl & SCC_SCM_CTRL_DECRYPT_MODE) ? scc->black_memory :
+		scc->red_memory);
+
+	writel(ctx->ctrl, scc->base + SCC_SCM_CTRL);
+}
+
+static irqreturn_t mxc_scc_int(int irq, void *priv)
+{
+	struct crypto_async_request *req;
+	struct mxc_scc_ctx *ctx;
+	struct mxc_scc *scc = priv;
+	int status;
+	int ret;
+
+	status = readl(scc->base + SCC_SCM_STATUS);
+
+	/* clear interrupt control registers */
+	writel(SCC_SCM_INTR_CTRL_CLR_INTR, scc->base + SCC_SCM_INTR_CTRL);
+
+	if (status & SCC_SCM_STATUS_BUSY)
+		return IRQ_NONE;
+
+	req = scc->req;
+	if (req) {
+		ctx = crypto_tfm_ctx(req->tfm);
+		ret = mxc_scc_get_data(ctx, req);
+		if (ret != -EINPROGRESS)
+			mxc_scc_ablkcipher_req_complete(req, ctx, ret);
+		else
+			mxc_scc_ablkcipher_next(ctx, req);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int mxc_scc_cra_init(struct crypto_tfm *tfm)
+{
+	struct mxc_scc_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_alg *alg = tfm->__crt_alg;
+	struct mxc_scc_crypto_tmpl *algt;
+
+	algt = container_of(alg, struct mxc_scc_crypto_tmpl, alg);
+
+	ctx->scc = algt->scc;
+	return 0;
+}
+
+static void mxc_scc_dequeue_req_unlocked(struct mxc_scc_ctx *ctx)
+{
+	struct crypto_async_request *req, *backlog;
+
+	if (ctx->scc->hw_busy)
+		return;
+
+	spin_lock_bh(&ctx->scc->lock);
+	backlog = crypto_get_backlog(&ctx->scc->queue);
+	req = crypto_dequeue_request(&ctx->scc->queue);
+	ctx->scc->req = req;
+	ctx->scc->hw_busy = true;
+	spin_unlock_bh(&ctx->scc->lock);
+
+	if (!req)
+		return;
+
+	if (backlog)
+		backlog->complete(backlog, -EINPROGRESS);
+
+	mxc_scc_ablkcipher_next(ctx, req);
+}
+
+static int mxc_scc_queue_req(struct mxc_scc_ctx *ctx,
+			     struct crypto_async_request *req)
+{
+	int ret;
+
+	spin_lock_bh(&ctx->scc->lock);
+	ret = crypto_enqueue_request(&ctx->scc->queue, req);
+	spin_unlock_bh(&ctx->scc->lock);
+
+	if (ret != -EINPROGRESS)
+		return ret;
+
+	mxc_scc_dequeue_req_unlocked(ctx);
+
+	return -EINPROGRESS;
+}
+
+static int mxc_scc_des3_op(struct mxc_scc_ctx *ctx,
+			   struct ablkcipher_request *req)
+{
+	int err;
+
+	err = mxc_scc_ablkcipher_req_init(req, ctx);
+	if (err)
+		return err;
+
+	return mxc_scc_queue_req(ctx, &req->base);
+}
+
+static int mxc_scc_ecb_des_encrypt(struct ablkcipher_request *req)
+{
+	struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req);
+	struct mxc_scc_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+	ctx->ctrl = SCC_SCM_CTRL_START_CIPHER;
+
+	return mxc_scc_des3_op(ctx, req);
+}
+
+static int mxc_scc_ecb_des_decrypt(struct ablkcipher_request *req)
+{
+	struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req);
+	struct mxc_scc_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+	ctx->ctrl = SCC_SCM_CTRL_START_CIPHER;
+	ctx->ctrl |= SCC_SCM_CTRL_DECRYPT_MODE;
+
+	return mxc_scc_des3_op(ctx, req);
+}
+
+static int mxc_scc_cbc_des_encrypt(struct ablkcipher_request *req)
+{
+	struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req);
+	struct mxc_scc_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+	ctx->ctrl = SCC_SCM_CTRL_START_CIPHER;
+	ctx->ctrl |= SCC_SCM_CTRL_CBC_MODE;
+
+	return mxc_scc_des3_op(ctx, req);
+}
+
+static int mxc_scc_cbc_des_decrypt(struct ablkcipher_request *req)
+{
+	struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(req);
+	struct mxc_scc_ctx *ctx = crypto_ablkcipher_ctx(cipher);
+
+	ctx->ctrl = SCC_SCM_CTRL_START_CIPHER;
+	ctx->ctrl |= SCC_SCM_CTRL_CBC_MODE;
+	ctx->ctrl |= SCC_SCM_CTRL_DECRYPT_MODE;
+
+	return mxc_scc_des3_op(ctx, req);
+}
+
+static void mxc_scc_hw_init(struct mxc_scc *scc)
+{
+	int offset;
+
+	offset = SCC_NON_RESERVED_OFFSET / scc->block_size_bytes;
+
+	/* Fill the RED_START register */
+	writel(offset, scc->base + SCC_SCM_RED_START);
+
+	/* Fill the BLACK_START register */
+	writel(offset, scc->base + SCC_SCM_BLACK_START);
+
+	scc->red_memory = scc->base + SCC_SCM_RED_MEMORY +
+			  SCC_NON_RESERVED_OFFSET;
+
+	scc->black_memory = scc->base + SCC_SCM_BLACK_MEMORY +
+			    SCC_NON_RESERVED_OFFSET;
+
+	scc->bytes_remaining = scc->memory_size_bytes;
+}
+
+static int mxc_scc_get_config(struct mxc_scc *scc)
+{
+	int config;
+
+	config = readl(scc->base + SCC_SCM_CFG);
+
+	scc->block_size_bytes = config & SCC_SCM_CFG_BLOCK_SIZE_MASK;
+
+	scc->black_ram_size_blocks = config & SCC_SCM_CFG_BLACK_SIZE_MASK;
+
+	scc->memory_size_bytes = (scc->block_size_bytes *
+				  scc->black_ram_size_blocks) -
+				  SCC_NON_RESERVED_OFFSET;
+
+	return 0;
+}
+
+static enum mxc_scc_state mxc_scc_get_state(struct mxc_scc *scc)
+{
+	enum mxc_scc_state state;
+	int status;
+
+	status = readl(scc->base + SCC_SMN_STATUS) &
+		       SCC_SMN_STATUS_STATE_MASK;
+
+	/* If in Health Check, try to bringup to secure state */
+	if (status & SCC_SMN_STATE_HEALTH_CHECK) {
+		/*
+		 * Write a simple algorithm to the Algorithm Sequence
+		 * Checker (ASC)
+		 */
+		writel(0xaaaa, scc->base + SCC_SMN_SEQ_START);
+		writel(0x5555, scc->base + SCC_SMN_SEQ_END);
+		writel(0x5555, scc->base + SCC_SMN_SEQ_CHECK);
+
+		status = readl(scc->base + SCC_SMN_STATUS) &
+			       SCC_SMN_STATUS_STATE_MASK;
+	}
+
+	switch (status) {
+	case SCC_SMN_STATE_NON_SECURE:
+	case SCC_SMN_STATE_SECURE:
+		state = SCC_STATE_OK;
+		break;
+	case SCC_SMN_STATE_FAIL:
+		state = SCC_STATE_FAILED;
+		break;
+	default:
+		state = SCC_STATE_UNIMPLEMENTED;
+		break;
+	}
+
+	return state;
+}
+
+static struct mxc_scc_crypto_tmpl scc_ecb_des = {
+	.alg = {
+		.cra_name = "ecb(des3_ede)",
+		.cra_driver_name = "ecb-des3-scc",
+		.cra_priority = 300,
+		.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
+		.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+		.cra_ctxsize = sizeof(struct mxc_scc_ctx),
+		.cra_alignmask = 0,
+		.cra_type = &crypto_ablkcipher_type,
+		.cra_module = THIS_MODULE,
+		.cra_init = mxc_scc_cra_init,
+		.cra_u.ablkcipher = {
+			.min_keysize = DES3_EDE_KEY_SIZE,
+			.max_keysize = DES3_EDE_KEY_SIZE,
+			.encrypt = mxc_scc_ecb_des_encrypt,
+			.decrypt = mxc_scc_ecb_des_decrypt,
+		}
+	}
+};
+
+static struct mxc_scc_crypto_tmpl scc_cbc_des = {
+	.alg = {
+		.cra_name = "cbc(des3_ede)",
+		.cra_driver_name = "cbc-des3-scc",
+		.cra_priority = 300,
+		.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER,
+		.cra_blocksize = DES3_EDE_BLOCK_SIZE,
+		.cra_ctxsize = sizeof(struct mxc_scc_ctx),
+		.cra_alignmask = 0,
+		.cra_type = &crypto_ablkcipher_type,
+		.cra_module = THIS_MODULE,
+		.cra_init = mxc_scc_cra_init,
+		.cra_u.ablkcipher = {
+			.min_keysize = DES3_EDE_KEY_SIZE,
+			.max_keysize = DES3_EDE_KEY_SIZE,
+			.encrypt = mxc_scc_cbc_des_encrypt,
+			.decrypt = mxc_scc_cbc_des_decrypt,
+		}
+	}
+};
+
+static struct mxc_scc_crypto_tmpl *scc_crypto_algs[] = {
+	&scc_ecb_des,
+	&scc_cbc_des,
+};
+
+static int mxc_scc_crypto_register(struct mxc_scc *scc)
+{
+	int i;
+	int err = 0;
+
+	for (i = 0; i < ARRAY_SIZE(scc_crypto_algs); i++) {
+		scc_crypto_algs[i]->scc = scc;
+		err = crypto_register_alg(&scc_crypto_algs[i]->alg);
+		if (err)
+			goto err_out;
+	}
+
+	return 0;
+
+err_out:
+	while (--i >= 0)
+		crypto_unregister_alg(&scc_crypto_algs[i]->alg);
+
+	return err;
+}
+
+static void mxc_scc_crypto_unregister(void)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(scc_crypto_algs); i++)
+		crypto_unregister_alg(&scc_crypto_algs[i]->alg);
+}
+
+static int mxc_scc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct resource *res;
+	struct mxc_scc *scc;
+	enum mxc_scc_state state;
+	int irq;
+	int ret;
+	int i;
+
+	scc = devm_kzalloc(dev, sizeof(*scc), GFP_KERNEL);
+	if (!scc)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	scc->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(scc->base))
+		return PTR_ERR(scc->base);
+
+	scc->clk = devm_clk_get(&pdev->dev, "ipg");
+	if (IS_ERR(scc->clk)) {
+		dev_err(dev, "Could not get ipg clock\n");
+		return PTR_ERR(scc->clk);
+	}
+
+	clk_prepare_enable(scc->clk);
+
+	/* clear error status register */
+	writel(0x0, scc->base + SCC_SCM_ERROR_STATUS);
+
+	/* clear interrupt control registers */
+	writel(SCC_SCM_INTR_CTRL_CLR_INTR |
+	       SCC_SCM_INTR_CTRL_MASK_INTR,
+	       scc->base + SCC_SCM_INTR_CTRL);
+
+	writel(SCC_SMN_COMMAND_CLR_INTR |
+	       SCC_SMN_COMMAND_EN_INTR,
+	       scc->base + SCC_SMN_COMMAND);
+
+	scc->dev = dev;
+	platform_set_drvdata(pdev, scc);
+
+	ret = mxc_scc_get_config(scc);
+	if (ret)
+		goto err_out;
+
+	state = mxc_scc_get_state(scc);
+
+	if (state != SCC_STATE_OK) {
+		dev_err(dev, "SCC in unusable state %d\n", state);
+		ret = -EINVAL;
+		goto err_out;
+	}
+
+	mxc_scc_hw_init(scc);
+
+	spin_lock_init(&scc->lock);
+	/* FIXME: calculate queue from RAM slots */
+	crypto_init_queue(&scc->queue, 50);
+
+	for (i = 0; i < 2; i++) {
+		irq = platform_get_irq(pdev, i);
+		if (irq < 0) {
+			dev_err(dev, "failed to get irq resource\n");
+			ret = -EINVAL;
+			goto err_out;
+		}
+
+		ret = devm_request_threaded_irq(dev, irq, NULL, mxc_scc_int,
+						IRQF_ONESHOT, dev_name(dev), scc);
+		if (ret)
+			goto err_out;
+	}
+
+	ret = mxc_scc_crypto_register(scc);
+	if (ret) {
+		dev_err(dev, "could not register algorithms");
+		goto err_out;
+	}
+
+	dev_info(dev, "registered successfully.\n");
+
+	return 0;
+
+err_out:
+	clk_disable_unprepare(scc->clk);
+
+	return ret;
+}
+
+static int mxc_scc_remove(struct platform_device *pdev)
+{
+	struct mxc_scc *scc = platform_get_drvdata(pdev);
+
+	mxc_scc_crypto_unregister();
+
+	clk_disable_unprepare(scc->clk);
+
+	return 0;
+}
+
+static const struct of_device_id mxc_scc_dt_ids[] = {
+	{ .compatible = "fsl,imx25-scc", .data = NULL, },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxc_scc_dt_ids);
+
+static struct platform_driver mxc_scc_driver = {
+	.probe	= mxc_scc_probe,
+	.remove	= mxc_scc_remove,
+	.driver	= {
+		.name		= "mxc-scc",
+		.of_match_table	= mxc_scc_dt_ids,
+	},
+};
+
+module_platform_driver(mxc_scc_driver);
+MODULE_AUTHOR("Steffen Trumtrar <kernel@pengutronix.de>");
+MODULE_DESCRIPTION("Freescale i.MX25 SCC Crypto driver");
+MODULE_LICENSE("GPL v2");

drivers/crypto/n2_core.c

@@ -1598,7 +1598,7 @@ static void *new_queue(unsigned long q_type)
 
 static void free_queue(void *p, unsigned long q_type)
 {
-	return kmem_cache_free(queue_cache[q_type - 1], p);
+	kmem_cache_free(queue_cache[q_type - 1], p);
 }
 
 static int queue_cache_init(void)

drivers/crypto/omap-aes.c

@@ -26,7 +26,6 @@
 #include <linux/scatterlist.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
-#include <linux/omap-dma.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -176,9 +175,7 @@ struct omap_aes_dev {
 
 	struct scatter_walk		in_walk;
 	struct scatter_walk		out_walk;
-	int			dma_in;
 	struct dma_chan		*dma_lch_in;
-	int			dma_out;
 	struct dma_chan		*dma_lch_out;
 	int			in_sg_len;
 	int			out_sg_len;
@@ -351,30 +348,21 @@ static void omap_aes_dma_out_callback(void *data)
 
 static int omap_aes_dma_init(struct omap_aes_dev *dd)
 {
-	int err = -ENOMEM;
-	dma_cap_mask_t mask;
+	int err;
 
 	dd->dma_lch_out = NULL;
 	dd->dma_lch_in = NULL;
 
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	dd->dma_lch_in = dma_request_slave_channel_compat(mask,
-							  omap_dma_filter_fn,
-							  &dd->dma_in,
-							  dd->dev, "rx");
-	if (!dd->dma_lch_in) {
+	dd->dma_lch_in = dma_request_chan(dd->dev, "rx");
+	if (IS_ERR(dd->dma_lch_in)) {
 		dev_err(dd->dev, "Unable to request in DMA channel\n");
-		goto err_dma_in;
+		return PTR_ERR(dd->dma_lch_in);
 	}
 
-	dd->dma_lch_out = dma_request_slave_channel_compat(mask,
-							   omap_dma_filter_fn,
-							   &dd->dma_out,
-							   dd->dev, "tx");
-	if (!dd->dma_lch_out) {
+	dd->dma_lch_out = dma_request_chan(dd->dev, "tx");
+	if (IS_ERR(dd->dma_lch_out)) {
 		dev_err(dd->dev, "Unable to request out DMA channel\n");
+		err = PTR_ERR(dd->dma_lch_out);
 		goto err_dma_out;
 	}
 
@@ -382,14 +370,15 @@ static int omap_aes_dma_init(struct omap_aes_dev *dd)
 
 err_dma_out:
 	dma_release_channel(dd->dma_lch_in);
-err_dma_in:
-	if (err)
-		pr_err("error: %d\n", err);
+
 	return err;
 }
 
 static void omap_aes_dma_cleanup(struct omap_aes_dev *dd)
 {
+	if (dd->pio_only)
+		return;
+
 	dma_release_channel(dd->dma_lch_out);
 	dma_release_channel(dd->dma_lch_in);
 }
@@ -1080,9 +1069,6 @@ static int omap_aes_get_res_of(struct omap_aes_dev *dd,
 		goto err;
 	}
 
-	dd->dma_out = -1; /* Dummy value that's unused */
-	dd->dma_in = -1; /* Dummy value that's unused */
-
 	dd->pdata = match->data;
 
 err:
@@ -1116,24 +1102,6 @@ static int omap_aes_get_res_pdev(struct omap_aes_dev *dd,
 	}
 	memcpy(res, r, sizeof(*res));
 
-	/* Get the DMA out channel */
-	r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!r) {
-		dev_err(dev, "no DMA out resource info\n");
-		err = -ENODEV;
-		goto err;
-	}
-	dd->dma_out = r->start;
-
-	/* Get the DMA in channel */
-	r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-	if (!r) {
-		dev_err(dev, "no DMA in resource info\n");
-		err = -ENODEV;
-		goto err;
-	}
-	dd->dma_in = r->start;
-
 	/* Only OMAP2/3 can be non-DT */
 	dd->pdata = &omap_aes_pdata_omap2;
 
@@ -1191,7 +1159,9 @@ static int omap_aes_probe(struct platform_device *pdev)
 	tasklet_init(&dd->done_task, omap_aes_done_task, (unsigned long)dd);
 
 	err = omap_aes_dma_init(dd);
-	if (err && AES_REG_IRQ_STATUS(dd) && AES_REG_IRQ_ENABLE(dd)) {
+	if (err == -EPROBE_DEFER) {
+		goto err_irq;
+	} else if (err && AES_REG_IRQ_STATUS(dd) && AES_REG_IRQ_ENABLE(dd)) {
 		dd->pio_only = 1;
 
 		irq = platform_get_irq(pdev, 0);
@@ -1248,8 +1218,8 @@ err_algs:
 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
 			crypto_unregister_alg(
 					&dd->pdata->algs_info[i].algs_list[j]);
-	if (!dd->pio_only)
-		omap_aes_dma_cleanup(dd);
+
+	omap_aes_dma_cleanup(dd);
 err_irq:
 	tasklet_kill(&dd->done_task);
 	pm_runtime_disable(dev);

drivers/crypto/omap-des.c

@@ -29,7 +29,6 @@
 #include <linux/scatterlist.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
-#include <linux/omap-dma.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -39,6 +38,7 @@
 #include <linux/interrupt.h>
 #include <crypto/scatterwalk.h>
 #include <crypto/des.h>
+#include <crypto/algapi.h>
 
 #define DST_MAXBURST			2
 
@@ -132,14 +132,10 @@ struct omap_des_dev {
 	unsigned long		flags;
 	int			err;
 
-	/* spinlock used for queues */
-	spinlock_t		lock;
-	struct crypto_queue	queue;
-
 	struct tasklet_struct	done_task;
-	struct tasklet_struct	queue_task;
 
 	struct ablkcipher_request	*req;
+	struct crypto_engine		*engine;
 	/*
 	 * total is used by PIO mode for book keeping so introduce
 	 * variable total_save as need it to calc page_order
@@ -158,9 +154,7 @@ struct omap_des_dev {
 
 	struct scatter_walk		in_walk;
 	struct scatter_walk		out_walk;
-	int			dma_in;
 	struct dma_chan		*dma_lch_in;
-	int			dma_out;
 	struct dma_chan		*dma_lch_out;
 	int			in_sg_len;
 	int			out_sg_len;
@@ -340,30 +334,21 @@ static void omap_des_dma_out_callback(void *data)
 
 static int omap_des_dma_init(struct omap_des_dev *dd)
 {
-	int err = -ENOMEM;
-	dma_cap_mask_t mask;
+	int err;
 
 	dd->dma_lch_out = NULL;
 	dd->dma_lch_in = NULL;
 
-	dma_cap_zero(mask);
-	dma_cap_set(DMA_SLAVE, mask);
-
-	dd->dma_lch_in = dma_request_slave_channel_compat(mask,
-							  omap_dma_filter_fn,
-							  &dd->dma_in,
-							  dd->dev, "rx");
-	if (!dd->dma_lch_in) {
+	dd->dma_lch_in = dma_request_chan(dd->dev, "rx");
+	if (IS_ERR(dd->dma_lch_in)) {
 		dev_err(dd->dev, "Unable to request in DMA channel\n");
-		goto err_dma_in;
+		return PTR_ERR(dd->dma_lch_in);
 	}
 
-	dd->dma_lch_out = dma_request_slave_channel_compat(mask,
-							   omap_dma_filter_fn,
-							   &dd->dma_out,
-							   dd->dev, "tx");
-	if (!dd->dma_lch_out) {
+	dd->dma_lch_out = dma_request_chan(dd->dev, "tx");
+	if (IS_ERR(dd->dma_lch_out)) {
 		dev_err(dd->dev, "Unable to request out DMA channel\n");
+		err = PTR_ERR(dd->dma_lch_out);
 		goto err_dma_out;
 	}
 
@@ -371,14 +356,15 @@ static int omap_des_dma_init(struct omap_des_dev *dd)
 
 err_dma_out:
 	dma_release_channel(dd->dma_lch_in);
-err_dma_in:
-	if (err)
-		pr_err("error: %d\n", err);
+
 	return err;
 }
 
 static void omap_des_dma_cleanup(struct omap_des_dev *dd)
 {
+	if (dd->pio_only)
+		return;
+
 	dma_release_channel(dd->dma_lch_out);
 	dma_release_channel(dd->dma_lch_in);
 }
@@ -520,9 +506,7 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int err)
 	pr_debug("err: %d\n", err);
 
 	pm_runtime_put(dd->dev);
-	dd->flags &= ~FLAGS_BUSY;
-
-	req->base.complete(&req->base, err);
+	crypto_finalize_request(dd->engine, req, err);
 }
 
 static int omap_des_crypt_dma_stop(struct omap_des_dev *dd)
@@ -585,34 +569,24 @@ static int omap_des_copy_sgs(struct omap_des_dev *dd)
 }
 
 static int omap_des_handle_queue(struct omap_des_dev *dd,
-			       struct ablkcipher_request *req)
+				 struct ablkcipher_request *req)
 {
-	struct crypto_async_request *async_req, *backlog;
-	struct omap_des_ctx *ctx;
-	struct omap_des_reqctx *rctx;
-	unsigned long flags;
-	int err, ret = 0;
-
-	spin_lock_irqsave(&dd->lock, flags);
 	if (req)
-		ret = ablkcipher_enqueue_request(&dd->queue, req);
-	if (dd->flags & FLAGS_BUSY) {
-		spin_unlock_irqrestore(&dd->lock, flags);
-		return ret;
-	}
-	backlog = crypto_get_backlog(&dd->queue);
-	async_req = crypto_dequeue_request(&dd->queue);
-	if (async_req)
-		dd->flags |= FLAGS_BUSY;
-	spin_unlock_irqrestore(&dd->lock, flags);
+		return crypto_transfer_request_to_engine(dd->engine, req);
 
-	if (!async_req)
-		return ret;
+	return 0;
+}
 
-	if (backlog)
-		backlog->complete(backlog, -EINPROGRESS);
+static int omap_des_prepare_req(struct crypto_engine *engine,
+				struct ablkcipher_request *req)
+{
+	struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
+			crypto_ablkcipher_reqtfm(req));
+	struct omap_des_dev *dd = omap_des_find_dev(ctx);
+	struct omap_des_reqctx *rctx;
 
-	req = ablkcipher_request_cast(async_req);
+	if (!dd)
+		return -ENODEV;
 
 	/* assign new request to device */
 	dd->req = req;
@@ -642,16 +616,20 @@ static int omap_des_handle_queue(struct omap_des_dev *dd,
 	dd->ctx = ctx;
 	ctx->dd = dd;
 
-	err = omap_des_write_ctrl(dd);
-	if (!err)
-		err = omap_des_crypt_dma_start(dd);
-	if (err) {
-		/* des_task will not finish it, so do it here */
-		omap_des_finish_req(dd, err);
-		tasklet_schedule(&dd->queue_task);
-	}
+	return omap_des_write_ctrl(dd);
+}
+
+static int omap_des_crypt_req(struct crypto_engine *engine,
+			      struct ablkcipher_request *req)
+{
+	struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
+			crypto_ablkcipher_reqtfm(req));
+	struct omap_des_dev *dd = omap_des_find_dev(ctx);
+
+	if (!dd)
+		return -ENODEV;
 
-	return ret; /* return ret, which is enqueue return value */
+	return omap_des_crypt_dma_start(dd);
 }
 
 static void omap_des_done_task(unsigned long data)
@@ -683,18 +661,10 @@ static void omap_des_done_task(unsigned long data)
 	}
 
 	omap_des_finish_req(dd, 0);
-	omap_des_handle_queue(dd, NULL);
 
 	pr_debug("exit\n");
 }
 
-static void omap_des_queue_task(unsigned long data)
-{
-	struct omap_des_dev *dd = (struct omap_des_dev *)data;
-
-	omap_des_handle_queue(dd, NULL);
-}
-
 static int omap_des_crypt(struct ablkcipher_request *req, unsigned long mode)
 {
 	struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
@@ -999,8 +969,6 @@ static int omap_des_get_of(struct omap_des_dev *dd,
 		return -EINVAL;
 	}
 
-	dd->dma_out = -1; /* Dummy value that's unused */
-	dd->dma_in = -1; /* Dummy value that's unused */
 	dd->pdata = match->data;
 
 	return 0;
@@ -1016,33 +984,10 @@ static int omap_des_get_of(struct omap_des_dev *dd,
 static int omap_des_get_pdev(struct omap_des_dev *dd,
 		struct platform_device *pdev)
 {
-	struct device *dev = &pdev->dev;
-	struct resource *r;
-	int err = 0;
-
-	/* Get the DMA out channel */
-	r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!r) {
-		dev_err(dev, "no DMA out resource info\n");
-		err = -ENODEV;
-		goto err;
-	}
-	dd->dma_out = r->start;
-
-	/* Get the DMA in channel */
-	r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-	if (!r) {
-		dev_err(dev, "no DMA in resource info\n");
-		err = -ENODEV;
-		goto err;
-	}
-	dd->dma_in = r->start;
-
 	/* non-DT devices get pdata from pdev */
 	dd->pdata = pdev->dev.platform_data;
 
-err:
-	return err;
+	return 0;
 }
 
 static int omap_des_probe(struct platform_device *pdev)
@@ -1062,9 +1007,6 @@ static int omap_des_probe(struct platform_device *pdev)
 	dd->dev = dev;
 	platform_set_drvdata(pdev, dd);
 
-	spin_lock_init(&dd->lock);
-	crypto_init_queue(&dd->queue, OMAP_DES_QUEUE_LENGTH);
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		dev_err(dev, "no MEM resource info\n");
@@ -1103,10 +1045,11 @@ static int omap_des_probe(struct platform_device *pdev)
 		 (reg & dd->pdata->minor_mask) >> dd->pdata->minor_shift);
 
 	tasklet_init(&dd->done_task, omap_des_done_task, (unsigned long)dd);
-	tasklet_init(&dd->queue_task, omap_des_queue_task, (unsigned long)dd);
 
 	err = omap_des_dma_init(dd);
-	if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {
+	if (err == -EPROBE_DEFER) {
+		goto err_irq;
+	} else if (err && DES_REG_IRQ_STATUS(dd) && DES_REG_IRQ_ENABLE(dd)) {
 		dd->pio_only = 1;
 
 		irq = platform_get_irq(pdev, 0);
@@ -1144,17 +1087,30 @@ static int omap_des_probe(struct platform_device *pdev)
 		}
 	}
 
+	/* Initialize des crypto engine */
+	dd->engine = crypto_engine_alloc_init(dev, 1);
+	if (!dd->engine)
+		goto err_algs;
+
+	dd->engine->prepare_request = omap_des_prepare_req;
+	dd->engine->crypt_one_request = omap_des_crypt_req;
+	err = crypto_engine_start(dd->engine);
+	if (err)
+		goto err_engine;
+
 	return 0;
+
+err_engine:
+	crypto_engine_exit(dd->engine);
 err_algs:
 	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
 		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
 			crypto_unregister_alg(
 					&dd->pdata->algs_info[i].algs_list[j]);
-	if (!dd->pio_only)
-		omap_des_dma_cleanup(dd);
+
+	omap_des_dma_cleanup(dd);
 err_irq:
 	tasklet_kill(&dd->done_task);
-	tasklet_kill(&dd->queue_task);
 err_get:
 	pm_runtime_disable(dev);
 err_res:
@@ -1182,7 +1138,6 @@ static int omap_des_remove(struct platform_device *pdev)
 					&dd->pdata->algs_info[i].algs_list[j]);
 
 	tasklet_kill(&dd->done_task);
-	tasklet_kill(&dd->queue_task);
 	omap_des_dma_cleanup(dd);
 	pm_runtime_disable(dd->dev);
 	dd = NULL;

drivers/crypto/omap-sham.c

@@ -29,7 +29,6 @@
 #include <linux/scatterlist.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
-#include <linux/omap-dma.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
@@ -219,7 +218,6 @@ struct omap_sham_dev {
 	int			irq;
 	spinlock_t		lock;
 	int			err;
-	unsigned int		dma;
 	struct dma_chan		*dma_lch;
 	struct tasklet_struct	done_task;
 	u8			polling_mode;
@@ -1842,7 +1840,6 @@ static int omap_sham_get_res_of(struct omap_sham_dev *dd,
 		goto err;
 	}
 
-	dd->dma = -1; /* Dummy value that's unused */
 	dd->pdata = match->data;
 
 err:
@@ -1884,15 +1881,6 @@ static int omap_sham_get_res_pdev(struct omap_sham_dev *dd,
 		goto err;
 	}
 
-	/* Get the DMA */
-	r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-	if (!r) {
-		dev_err(dev, "no DMA resource info\n");
-		err = -ENODEV;
-		goto err;
-	}
-	dd->dma = r->start;
-
 	/* Only OMAP2/3 can be non-DT */
 	dd->pdata = &omap_sham_pdata_omap2;
 
@@ -1946,9 +1934,12 @@ static int omap_sham_probe(struct platform_device *pdev)
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
-	dd->dma_lch = dma_request_slave_channel_compat(mask, omap_dma_filter_fn,
-						       &dd->dma, dev, "rx");
-	if (!dd->dma_lch) {
+	dd->dma_lch = dma_request_chan(dev, "rx");
+	if (IS_ERR(dd->dma_lch)) {
+		err = PTR_ERR(dd->dma_lch);
+		if (err == -EPROBE_DEFER)
+			goto data_err;
+
 		dd->polling_mode = 1;
 		dev_dbg(dev, "using polling mode instead of dma\n");
 	}
@@ -1995,7 +1986,7 @@ err_algs:
 					&dd->pdata->algs_info[i].algs_list[j]);
 err_pm:
 	pm_runtime_disable(dev);
-	if (dd->dma_lch)
+	if (dd->polling_mode)
 		dma_release_channel(dd->dma_lch);
 data_err:
 	dev_err(dev, "initialization failed.\n");
@@ -2021,7 +2012,7 @@ static int omap_sham_remove(struct platform_device *pdev)
 	tasklet_kill(&dd->done_task);
 	pm_runtime_disable(&pdev->dev);
 
-	if (dd->dma_lch)
+	if (!dd->polling_mode)
 		dma_release_channel(dd->dma_lch);
 
 	return 0;

drivers/crypto/qat/qat_c3xxx/adf_drv.c

@@ -300,9 +300,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);

drivers/crypto/qat/qat_c3xxxvf/adf_c3xxxvf_hw_data.c

@@ -109,29 +109,6 @@ static void adf_vf_void_noop(struct adf_accel_dev *accel_dev)
 {
 }
 
-static int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-		(ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0)) {
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Init event to PF\n");
-		return -EFAULT;
-	}
-	return 0;
-}
-
-static void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0))
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Shutdown event to PF\n");
-}
-
 void adf_init_hw_data_c3xxxiov(struct adf_hw_device_data *hw_data)
 {
 	hw_data->dev_class = &c3xxxiov_class;

drivers/crypto/qat/qat_c3xxxvf/adf_drv.c

@@ -238,6 +238,8 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
@@ -270,9 +272,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);

drivers/crypto/qat/qat_c62x/adf_drv.c

@@ -300,9 +300,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);

drivers/crypto/qat/qat_c62xvf/adf_c62xvf_hw_data.c

@@ -109,29 +109,6 @@ static void adf_vf_void_noop(struct adf_accel_dev *accel_dev)
 {
 }
 
-static int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-		(ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0)) {
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Init event to PF\n");
-		return -EFAULT;
-	}
-	return 0;
-}
-
-static void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0))
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Shutdown event to PF\n");
-}
-
 void adf_init_hw_data_c62xiov(struct adf_hw_device_data *hw_data)
 {
 	hw_data->dev_class = &c62xiov_class;

drivers/crypto/qat/qat_c62xvf/adf_drv.c

@@ -238,6 +238,8 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
@@ -270,9 +272,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);

drivers/crypto/qat/qat_common/Makefile

@@ -9,7 +9,6 @@ clean-files += qat_rsaprivkey-asn1.c qat_rsaprivkey-asn1.h
 obj-$(CONFIG_CRYPTO_DEV_QAT) += intel_qat.o
 intel_qat-objs := adf_cfg.o \
 	adf_isr.o \
-	adf_vf_isr.o \
 	adf_ctl_drv.o \
 	adf_dev_mgr.o \
 	adf_init.o \
@@ -27,4 +26,5 @@ intel_qat-objs := adf_cfg.o \
 	qat_hal.o
 
 intel_qat-$(CONFIG_DEBUG_FS) += adf_transport_debug.o
-intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_pf2vf_msg.o
+intel_qat-$(CONFIG_PCI_IOV) += adf_sriov.o adf_pf2vf_msg.o \
+			       adf_vf2pf_msg.o adf_vf_isr.o

drivers/crypto/qat/qat_common/adf_admin.c

@@ -61,7 +61,7 @@
 #define ADF_DH895XCC_MAILBOX_STRIDE 0x1000
 #define ADF_ADMINMSG_LEN 32
 
-static const u8 const_tab[1024] = {
+static const u8 const_tab[1024] __aligned(1024) = {
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

drivers/crypto/qat/qat_common/adf_cfg_strings.h

@@ -57,10 +57,8 @@
 #define ADF_RING_DC_SIZE "NumConcurrentRequests"
 #define ADF_RING_ASYM_TX "RingAsymTx"
 #define ADF_RING_SYM_TX "RingSymTx"
-#define ADF_RING_RND_TX "RingNrbgTx"
 #define ADF_RING_ASYM_RX "RingAsymRx"
 #define ADF_RING_SYM_RX "RingSymRx"
-#define ADF_RING_RND_RX "RingNrbgRx"
 #define ADF_RING_DC_TX "RingTx"
 #define ADF_RING_DC_RX "RingRx"
 #define ADF_ETRMGR_BANK "Bank"

drivers/crypto/qat/qat_common/adf_common_drv.h

@@ -67,7 +67,7 @@
 #define ADF_STATUS_AE_INITIALISED 4
 #define ADF_STATUS_AE_UCODE_LOADED 5
 #define ADF_STATUS_AE_STARTED 6
-#define ADF_STATUS_ORPHAN_TH_RUNNING 7
+#define ADF_STATUS_PF_RUNNING 7
 #define ADF_STATUS_IRQ_ALLOCATED 8
 
 enum adf_dev_reset_mode {
@@ -103,7 +103,7 @@ int adf_service_unregister(struct service_hndl *service);
 
 int adf_dev_init(struct adf_accel_dev *accel_dev);
 int adf_dev_start(struct adf_accel_dev *accel_dev);
-int adf_dev_stop(struct adf_accel_dev *accel_dev);
+void adf_dev_stop(struct adf_accel_dev *accel_dev);
 void adf_dev_shutdown(struct adf_accel_dev *accel_dev);
 
 int adf_iov_putmsg(struct adf_accel_dev *accel_dev, u32 msg, u8 vf_nr);
@@ -236,8 +236,13 @@ void adf_enable_vf2pf_interrupts(struct adf_accel_dev *accel_dev,
 				 uint32_t vf_mask);
 void adf_enable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
 void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
+
+int adf_vf2pf_init(struct adf_accel_dev *accel_dev);
+void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev);
 int adf_init_pf_wq(void);
 void adf_exit_pf_wq(void);
+int adf_init_vf_wq(void);
+void adf_exit_vf_wq(void);
 #else
 static inline int adf_sriov_configure(struct pci_dev *pdev, int numvfs)
 {
@@ -256,6 +261,15 @@ static inline void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev)
 {
 }
 
+static inline int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
+{
+	return 0;
+}
+
+static inline void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
+{
+}
+
 static inline int adf_init_pf_wq(void)
 {
 	return 0;
@@ -264,5 +278,15 @@ static inline int adf_init_pf_wq(void)
 static inline void adf_exit_pf_wq(void)
 {
 }
+
+static inline int adf_init_vf_wq(void)
+{
+	return 0;
+}
+
+static inline void adf_exit_vf_wq(void)
+{
+}
+
 #endif
 #endif

drivers/crypto/qat/qat_common/adf_ctl_drv.c

@@ -270,26 +270,33 @@ static int adf_ctl_is_device_in_use(int id)
 	return 0;
 }
 
-static int adf_ctl_stop_devices(uint32_t id)
+static void adf_ctl_stop_devices(uint32_t id)
 {
 	struct adf_accel_dev *accel_dev;
-	int ret = 0;
 
-	list_for_each_entry_reverse(accel_dev, adf_devmgr_get_head(), list) {
+	list_for_each_entry(accel_dev, adf_devmgr_get_head(), list) {
 		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
 			if (!adf_dev_started(accel_dev))
 				continue;
 
-			if (adf_dev_stop(accel_dev)) {
-				dev_err(&GET_DEV(accel_dev),
-					"Failed to stop qat_dev%d\n", id);
-				ret = -EFAULT;
-			} else {
-				adf_dev_shutdown(accel_dev);
-			}
+			/* First stop all VFs */
+			if (!accel_dev->is_vf)
+				continue;
+
+			adf_dev_stop(accel_dev);
+			adf_dev_shutdown(accel_dev);
+		}
+	}
+
+	list_for_each_entry(accel_dev, adf_devmgr_get_head(), list) {
+		if (id == accel_dev->accel_id || id == ADF_CFG_ALL_DEVICES) {
+			if (!adf_dev_started(accel_dev))
+				continue;
+
+			adf_dev_stop(accel_dev);
+			adf_dev_shutdown(accel_dev);
 		}
 	}
-	return ret;
 }
 
 static int adf_ctl_ioctl_dev_stop(struct file *fp, unsigned int cmd,
@@ -318,9 +325,8 @@ static int adf_ctl_ioctl_dev_stop(struct file *fp, unsigned int cmd,
 		pr_info("QAT: Stopping acceleration device qat_dev%d.\n",
 			ctl_data->device_id);
 
-	ret = adf_ctl_stop_devices(ctl_data->device_id);
-	if (ret)
-		pr_err("QAT: failed to stop device.\n");
+	adf_ctl_stop_devices(ctl_data->device_id);
+
 out:
 	kfree(ctl_data);
 	return ret;
@@ -465,12 +471,17 @@ static int __init adf_register_ctl_device_driver(void)
 	if (adf_init_pf_wq())
 		goto err_pf_wq;
 
+	if (adf_init_vf_wq())
+		goto err_vf_wq;
+
 	if (qat_crypto_register())
 		goto err_crypto_register;
 
 	return 0;
 
 err_crypto_register:
+	adf_exit_vf_wq();
+err_vf_wq:
 	adf_exit_pf_wq();
 err_pf_wq:
 	adf_exit_aer();
@@ -485,6 +496,7 @@ static void __exit adf_unregister_ctl_device_driver(void)
 {
 	adf_chr_drv_destroy();
 	adf_exit_aer();
+	adf_exit_vf_wq();
 	adf_exit_pf_wq();
 	qat_crypto_unregister();
 	adf_clean_vf_map(false);

drivers/crypto/qat/qat_common/adf_init.c

@@ -236,9 +236,9 @@ EXPORT_SYMBOL_GPL(adf_dev_start);
  * is shuting down.
  * To be used by QAT device specific drivers.
  *
- * Return: 0 on success, error code otherwise.
+ * Return: void
  */
-int adf_dev_stop(struct adf_accel_dev *accel_dev)
+void adf_dev_stop(struct adf_accel_dev *accel_dev)
 {
 	struct service_hndl *service;
 	struct list_head *list_itr;
@@ -246,9 +246,9 @@ int adf_dev_stop(struct adf_accel_dev *accel_dev)
 	int ret;
 
 	if (!adf_dev_started(accel_dev) &&
-	    !test_bit(ADF_STATUS_STARTING, &accel_dev->status)) {
-		return 0;
-	}
+	    !test_bit(ADF_STATUS_STARTING, &accel_dev->status))
+		return;
+
 	clear_bit(ADF_STATUS_STARTING, &accel_dev->status);
 	clear_bit(ADF_STATUS_STARTED, &accel_dev->status);
 
@@ -279,8 +279,6 @@ int adf_dev_stop(struct adf_accel_dev *accel_dev)
 		else
 			clear_bit(ADF_STATUS_AE_STARTED, &accel_dev->status);
 	}
-
-	return 0;
 }
 EXPORT_SYMBOL_GPL(adf_dev_stop);
 
@@ -329,6 +327,8 @@ void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
 			clear_bit(accel_dev->accel_id, &service->init_status);
 	}
 
+	hw_data->disable_iov(accel_dev);
+
 	if (test_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status)) {
 		hw_data->free_irq(accel_dev);
 		clear_bit(ADF_STATUS_IRQ_ALLOCATED, &accel_dev->status);
@@ -344,7 +344,6 @@ void adf_dev_shutdown(struct adf_accel_dev *accel_dev)
 	if (hw_data->exit_admin_comms)
 		hw_data->exit_admin_comms(accel_dev);
 
-	hw_data->disable_iov(accel_dev);
 	adf_cleanup_etr_data(accel_dev);
 	adf_dev_restore(accel_dev);
 }

drivers/crypto/qat/qat_common/adf_isr.c

@@ -302,7 +302,7 @@ static void adf_cleanup_bh(struct adf_accel_dev *accel_dev)
 }
 
 /**
- * adf_vf_isr_resource_free() - Free IRQ for acceleration device
+ * adf_isr_resource_free() - Free IRQ for acceleration device
  * @accel_dev:  Pointer to acceleration device.
  *
  * Function frees interrupts for acceleration device.
@@ -317,7 +317,7 @@ void adf_isr_resource_free(struct adf_accel_dev *accel_dev)
 EXPORT_SYMBOL_GPL(adf_isr_resource_free);
 
 /**
- * adf_vf_isr_resource_alloc() - Allocate IRQ for acceleration device
+ * adf_isr_resource_alloc() - Allocate IRQ for acceleration device
  * @accel_dev:  Pointer to acceleration device.
  *
  * Function allocates interrupts for acceleration device.

drivers/crypto/qat/qat_common/adf_sriov.c

@@ -249,13 +249,7 @@ int adf_sriov_configure(struct pci_dev *pdev, int numvfs)
 			return -EBUSY;
 		}
 
-		if (adf_dev_stop(accel_dev)) {
-			dev_err(&GET_DEV(accel_dev),
-				"Failed to stop qat_dev%d\n",
-				accel_dev->accel_id);
-			return -EFAULT;
-		}
-
+		adf_dev_stop(accel_dev);
 		adf_dev_shutdown(accel_dev);
 	}
 

drivers/crypto/qat/qat_common/adf_vf2pf_msg.c

@@ -0,0 +1,92 @@
+/*
+  This file is provided under a dual BSD/GPLv2 license.  When using or
+  redistributing this file, you may do so under either license.
+
+  GPL LICENSE SUMMARY
+  Copyright(c) 2015 Intel Corporation.
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of version 2 of the GNU General Public License as
+  published by the Free Software Foundation.
+
+  This program is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  General Public License for more details.
+
+  Contact Information:
+  qat-linux@intel.com
+
+  BSD LICENSE
+  Copyright(c) 2015 Intel Corporation.
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions
+  are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+    * Neither the name of Intel Corporation nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include "adf_accel_devices.h"
+#include "adf_common_drv.h"
+#include "adf_pf2vf_msg.h"
+
+/**
+ * adf_vf2pf_init() - send init msg to PF
+ * @accel_dev:  Pointer to acceleration VF device.
+ *
+ * Function sends an init messge from the VF to a PF
+ *
+ * Return: 0 on success, error code otherwise.
+ */
+int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
+{
+	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
+		(ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
+
+	if (adf_iov_putmsg(accel_dev, msg, 0)) {
+		dev_err(&GET_DEV(accel_dev),
+			"Failed to send Init event to PF\n");
+		return -EFAULT;
+	}
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(adf_vf2pf_init);
+
+/**
+ * adf_vf2pf_shutdown() - send shutdown msg to PF
+ * @accel_dev:  Pointer to acceleration VF device.
+ *
+ * Function sends a shutdown messge from the VF to a PF
+ *
+ * Return: void
+ */
+void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
+{
+	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
+	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
+
+	if (test_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status))
+		if (adf_iov_putmsg(accel_dev, msg, 0))
+			dev_err(&GET_DEV(accel_dev),
+				"Failed to send Shutdown event to PF\n");
+}
+EXPORT_SYMBOL_GPL(adf_vf2pf_shutdown);

drivers/crypto/qat/qat_common/adf_vf_isr.c

@@ -51,6 +51,7 @@
 #include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
+#include <linux/workqueue.h>
 #include "adf_accel_devices.h"
 #include "adf_common_drv.h"
 #include "adf_cfg.h"
@@ -64,6 +65,13 @@
 #define ADF_VINTSOU_BUN		BIT(0)
 #define ADF_VINTSOU_PF2VF	BIT(1)
 
+static struct workqueue_struct *adf_vf_stop_wq;
+
+struct adf_vf_stop_data {
+	struct adf_accel_dev *accel_dev;
+	struct work_struct work;
+};
+
 static int adf_enable_msi(struct adf_accel_dev *accel_dev)
 {
 	struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev;
@@ -90,6 +98,20 @@ static void adf_disable_msi(struct adf_accel_dev *accel_dev)
 	pci_disable_msi(pdev);
 }
 
+static void adf_dev_stop_async(struct work_struct *work)
+{
+	struct adf_vf_stop_data *stop_data =
+		container_of(work, struct adf_vf_stop_data, work);
+	struct adf_accel_dev *accel_dev = stop_data->accel_dev;
+
+	adf_dev_stop(accel_dev);
+	adf_dev_shutdown(accel_dev);
+
+	/* Re-enable PF2VF interrupts */
+	adf_enable_pf2vf_interrupts(accel_dev);
+	kfree(stop_data);
+}
+
 static void adf_pf2vf_bh_handler(void *data)
 {
 	struct adf_accel_dev *accel_dev = data;
@@ -107,11 +129,29 @@ static void adf_pf2vf_bh_handler(void *data)
 		goto err;
 
 	switch ((msg & ADF_PF2VF_MSGTYPE_MASK) >> ADF_PF2VF_MSGTYPE_SHIFT) {
-	case ADF_PF2VF_MSGTYPE_RESTARTING:
+	case ADF_PF2VF_MSGTYPE_RESTARTING: {
+		struct adf_vf_stop_data *stop_data;
+
 		dev_dbg(&GET_DEV(accel_dev),
 			"Restarting msg received from PF 0x%x\n", msg);
-		adf_dev_stop(accel_dev);
-		break;
+
+		clear_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
+		stop_data = kzalloc(sizeof(*stop_data), GFP_ATOMIC);
+		if (!stop_data) {
+			dev_err(&GET_DEV(accel_dev),
+				"Couldn't schedule stop for vf_%d\n",
+				accel_dev->accel_id);
+			return;
+		}
+		stop_data->accel_dev = accel_dev;
+		INIT_WORK(&stop_data->work, adf_dev_stop_async);
+		queue_work(adf_vf_stop_wq, &stop_data->work);
+		/* To ack, clear the PF2VFINT bit */
+		msg &= ~BIT(0);
+		ADF_CSR_WR(pmisc_bar_addr, hw_data->get_pf2vf_offset(0), msg);
+		return;
+	}
 	case ADF_PF2VF_MSGTYPE_VERSION_RESP:
 		dev_dbg(&GET_DEV(accel_dev),
 			"Version resp received from PF 0x%x\n", msg);
@@ -278,3 +318,18 @@ err_out:
 	return -EFAULT;
 }
 EXPORT_SYMBOL_GPL(adf_vf_isr_resource_alloc);
+
+int __init adf_init_vf_wq(void)
+{
+	adf_vf_stop_wq = create_workqueue("adf_vf_stop_wq");
+
+	return !adf_vf_stop_wq ? -EFAULT : 0;
+}
+
+void adf_exit_vf_wq(void)
+{
+	if (adf_vf_stop_wq)
+		destroy_workqueue(adf_vf_stop_wq);
+
+	adf_vf_stop_wq = NULL;
+}

drivers/crypto/qat/qat_common/qat_asym_algs.c

@@ -593,7 +593,7 @@ int qat_rsa_get_d(void *context, size_t hdrlen, unsigned char tag,
 
 	ret = -ENOMEM;
 	ctx->d = dma_zalloc_coherent(dev, ctx->key_sz, &ctx->dma_d, GFP_KERNEL);
-	if (!ctx->n)
+	if (!ctx->d)
 		goto err;
 
 	memcpy(ctx->d + (ctx->key_sz - vlen), ptr, vlen);
@@ -711,7 +711,7 @@ static void qat_rsa_exit_tfm(struct crypto_akcipher *tfm)
 	}
 	qat_crypto_put_instance(ctx->inst);
 	ctx->n = NULL;
-	ctx->d = NULL;
+	ctx->e = NULL;
 	ctx->d = NULL;
 }
 

drivers/crypto/qat/qat_dh895xcc/adf_drv.c

@@ -302,9 +302,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_disable_aer(accel_dev);
 	adf_cleanup_accel(accel_dev);

drivers/crypto/qat/qat_dh895xccvf/adf_dh895xccvf_hw_data.c

@@ -109,29 +109,6 @@ static void adf_vf_void_noop(struct adf_accel_dev *accel_dev)
 {
 }
 
-static int adf_vf2pf_init(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-		(ADF_VF2PF_MSGTYPE_INIT << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0)) {
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Init event to PF\n");
-		return -EFAULT;
-	}
-	return 0;
-}
-
-static void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev)
-{
-	u32 msg = (ADF_VF2PF_MSGORIGIN_SYSTEM |
-	    (ADF_VF2PF_MSGTYPE_SHUTDOWN << ADF_VF2PF_MSGTYPE_SHIFT));
-
-	if (adf_iov_putmsg(accel_dev, msg, 0))
-		dev_err(&GET_DEV(accel_dev),
-			"Failed to send Shutdown event to PF\n");
-}
-
 void adf_init_hw_data_dh895xcciov(struct adf_hw_device_data *hw_data)
 {
 	hw_data->dev_class = &dh895xcciov_class;

drivers/crypto/qat/qat_dh895xccvf/adf_drv.c

@@ -238,6 +238,8 @@ static int adf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto out_err_free_reg;
 
+	set_bit(ADF_STATUS_PF_RUNNING, &accel_dev->status);
+
 	ret = adf_dev_init(accel_dev);
 	if (ret)
 		goto out_err_dev_shutdown;
@@ -270,9 +272,7 @@ static void adf_remove(struct pci_dev *pdev)
 		pr_err("QAT: Driver removal failed\n");
 		return;
 	}
-	if (adf_dev_stop(accel_dev))
-		dev_err(&GET_DEV(accel_dev), "Failed to stop QAT accel dev\n");
-
+	adf_dev_stop(accel_dev);
 	adf_dev_shutdown(accel_dev);
 	adf_cleanup_accel(accel_dev);
 	adf_cleanup_pci_dev(accel_dev);

drivers/crypto/s5p-sss.c

@@ -11,65 +11,64 @@
  *
  */
 
-#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/crypto.h>
+#include <linux/dma-mapping.h>
 #include <linux/err.h>
-#include <linux/module.h>
-#include <linux/init.h>
 #include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
-#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/scatterlist.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/crypto.h>
-#include <linux/interrupt.h>
 
-#include <crypto/algapi.h>
-#include <crypto/aes.h>
 #include <crypto/ctr.h>
+#include <crypto/aes.h>
+#include <crypto/algapi.h>
+#include <crypto/scatterwalk.h>
 
 #define _SBF(s, v)                      ((v) << (s))
-#define _BIT(b)                         _SBF(b, 1)
 
 /* Feed control registers */
 #define SSS_REG_FCINTSTAT               0x0000
-#define SSS_FCINTSTAT_BRDMAINT          _BIT(3)
-#define SSS_FCINTSTAT_BTDMAINT          _BIT(2)
-#define SSS_FCINTSTAT_HRDMAINT          _BIT(1)
-#define SSS_FCINTSTAT_PKDMAINT          _BIT(0)
+#define SSS_FCINTSTAT_BRDMAINT          BIT(3)
+#define SSS_FCINTSTAT_BTDMAINT          BIT(2)
+#define SSS_FCINTSTAT_HRDMAINT          BIT(1)
+#define SSS_FCINTSTAT_PKDMAINT          BIT(0)
 
 #define SSS_REG_FCINTENSET              0x0004
-#define SSS_FCINTENSET_BRDMAINTENSET    _BIT(3)
-#define SSS_FCINTENSET_BTDMAINTENSET    _BIT(2)
-#define SSS_FCINTENSET_HRDMAINTENSET    _BIT(1)
-#define SSS_FCINTENSET_PKDMAINTENSET    _BIT(0)
+#define SSS_FCINTENSET_BRDMAINTENSET    BIT(3)
+#define SSS_FCINTENSET_BTDMAINTENSET    BIT(2)
+#define SSS_FCINTENSET_HRDMAINTENSET    BIT(1)
+#define SSS_FCINTENSET_PKDMAINTENSET    BIT(0)
 
 #define SSS_REG_FCINTENCLR              0x0008
-#define SSS_FCINTENCLR_BRDMAINTENCLR    _BIT(3)
-#define SSS_FCINTENCLR_BTDMAINTENCLR    _BIT(2)
-#define SSS_FCINTENCLR_HRDMAINTENCLR    _BIT(1)
-#define SSS_FCINTENCLR_PKDMAINTENCLR    _BIT(0)
+#define SSS_FCINTENCLR_BRDMAINTENCLR    BIT(3)
+#define SSS_FCINTENCLR_BTDMAINTENCLR    BIT(2)
+#define SSS_FCINTENCLR_HRDMAINTENCLR    BIT(1)
+#define SSS_FCINTENCLR_PKDMAINTENCLR    BIT(0)
 
 #define SSS_REG_FCINTPEND               0x000C
-#define SSS_FCINTPEND_BRDMAINTP         _BIT(3)
-#define SSS_FCINTPEND_BTDMAINTP         _BIT(2)
-#define SSS_FCINTPEND_HRDMAINTP         _BIT(1)
-#define SSS_FCINTPEND_PKDMAINTP         _BIT(0)
+#define SSS_FCINTPEND_BRDMAINTP         BIT(3)
+#define SSS_FCINTPEND_BTDMAINTP         BIT(2)
+#define SSS_FCINTPEND_HRDMAINTP         BIT(1)
+#define SSS_FCINTPEND_PKDMAINTP         BIT(0)
 
 #define SSS_REG_FCFIFOSTAT              0x0010
-#define SSS_FCFIFOSTAT_BRFIFOFUL        _BIT(7)
-#define SSS_FCFIFOSTAT_BRFIFOEMP        _BIT(6)
-#define SSS_FCFIFOSTAT_BTFIFOFUL        _BIT(5)
-#define SSS_FCFIFOSTAT_BTFIFOEMP        _BIT(4)
-#define SSS_FCFIFOSTAT_HRFIFOFUL        _BIT(3)
-#define SSS_FCFIFOSTAT_HRFIFOEMP        _BIT(2)
-#define SSS_FCFIFOSTAT_PKFIFOFUL        _BIT(1)
-#define SSS_FCFIFOSTAT_PKFIFOEMP        _BIT(0)
+#define SSS_FCFIFOSTAT_BRFIFOFUL        BIT(7)
+#define SSS_FCFIFOSTAT_BRFIFOEMP        BIT(6)
+#define SSS_FCFIFOSTAT_BTFIFOFUL        BIT(5)
+#define SSS_FCFIFOSTAT_BTFIFOEMP        BIT(4)
+#define SSS_FCFIFOSTAT_HRFIFOFUL        BIT(3)
+#define SSS_FCFIFOSTAT_HRFIFOEMP        BIT(2)
+#define SSS_FCFIFOSTAT_PKFIFOFUL        BIT(1)
+#define SSS_FCFIFOSTAT_PKFIFOEMP        BIT(0)
 
 #define SSS_REG_FCFIFOCTRL              0x0014
-#define SSS_FCFIFOCTRL_DESSEL           _BIT(2)
+#define SSS_FCFIFOCTRL_DESSEL           BIT(2)
 #define SSS_HASHIN_INDEPENDENT          _SBF(0, 0x00)
 #define SSS_HASHIN_CIPHER_INPUT         _SBF(0, 0x01)
 #define SSS_HASHIN_CIPHER_OUTPUT        _SBF(0, 0x02)
@@ -77,52 +76,52 @@
 #define SSS_REG_FCBRDMAS                0x0020
 #define SSS_REG_FCBRDMAL                0x0024
 #define SSS_REG_FCBRDMAC                0x0028
-#define SSS_FCBRDMAC_BYTESWAP           _BIT(1)
-#define SSS_FCBRDMAC_FLUSH              _BIT(0)
+#define SSS_FCBRDMAC_BYTESWAP           BIT(1)
+#define SSS_FCBRDMAC_FLUSH              BIT(0)
 
 #define SSS_REG_FCBTDMAS                0x0030
 #define SSS_REG_FCBTDMAL                0x0034
 #define SSS_REG_FCBTDMAC                0x0038
-#define SSS_FCBTDMAC_BYTESWAP           _BIT(1)
-#define SSS_FCBTDMAC_FLUSH              _BIT(0)
+#define SSS_FCBTDMAC_BYTESWAP           BIT(1)
+#define SSS_FCBTDMAC_FLUSH              BIT(0)
 
 #define SSS_REG_FCHRDMAS                0x0040
 #define SSS_REG_FCHRDMAL                0x0044
 #define SSS_REG_FCHRDMAC                0x0048
-#define SSS_FCHRDMAC_BYTESWAP           _BIT(1)
-#define SSS_FCHRDMAC_FLUSH              _BIT(0)
+#define SSS_FCHRDMAC_BYTESWAP           BIT(1)
+#define SSS_FCHRDMAC_FLUSH              BIT(0)
 
 #define SSS_REG_FCPKDMAS                0x0050
 #define SSS_REG_FCPKDMAL                0x0054
 #define SSS_REG_FCPKDMAC                0x0058
-#define SSS_FCPKDMAC_BYTESWAP           _BIT(3)
-#define SSS_FCPKDMAC_DESCEND            _BIT(2)
-#define SSS_FCPKDMAC_TRANSMIT           _BIT(1)
-#define SSS_FCPKDMAC_FLUSH              _BIT(0)
+#define SSS_FCPKDMAC_BYTESWAP           BIT(3)
+#define SSS_FCPKDMAC_DESCEND            BIT(2)
+#define SSS_FCPKDMAC_TRANSMIT           BIT(1)
+#define SSS_FCPKDMAC_FLUSH              BIT(0)
 
 #define SSS_REG_FCPKDMAO                0x005C
 
 /* AES registers */
 #define SSS_REG_AES_CONTROL		0x00
-#define SSS_AES_BYTESWAP_DI             _BIT(11)
-#define SSS_AES_BYTESWAP_DO             _BIT(10)
-#define SSS_AES_BYTESWAP_IV             _BIT(9)
-#define SSS_AES_BYTESWAP_CNT            _BIT(8)
-#define SSS_AES_BYTESWAP_KEY            _BIT(7)
-#define SSS_AES_KEY_CHANGE_MODE         _BIT(6)
+#define SSS_AES_BYTESWAP_DI             BIT(11)
+#define SSS_AES_BYTESWAP_DO             BIT(10)
+#define SSS_AES_BYTESWAP_IV             BIT(9)
+#define SSS_AES_BYTESWAP_CNT            BIT(8)
+#define SSS_AES_BYTESWAP_KEY            BIT(7)
+#define SSS_AES_KEY_CHANGE_MODE         BIT(6)
 #define SSS_AES_KEY_SIZE_128            _SBF(4, 0x00)
 #define SSS_AES_KEY_SIZE_192            _SBF(4, 0x01)
 #define SSS_AES_KEY_SIZE_256            _SBF(4, 0x02)
-#define SSS_AES_FIFO_MODE               _BIT(3)
+#define SSS_AES_FIFO_MODE               BIT(3)
 #define SSS_AES_CHAIN_MODE_ECB          _SBF(1, 0x00)
 #define SSS_AES_CHAIN_MODE_CBC          _SBF(1, 0x01)
 #define SSS_AES_CHAIN_MODE_CTR          _SBF(1, 0x02)
-#define SSS_AES_MODE_DECRYPT            _BIT(0)
+#define SSS_AES_MODE_DECRYPT            BIT(0)
 
 #define SSS_REG_AES_STATUS		0x04
-#define SSS_AES_BUSY                    _BIT(2)
-#define SSS_AES_INPUT_READY             _BIT(1)
-#define SSS_AES_OUTPUT_READY            _BIT(0)
+#define SSS_AES_BUSY                    BIT(2)
+#define SSS_AES_INPUT_READY             BIT(1)
+#define SSS_AES_OUTPUT_READY            BIT(0)
 
 #define SSS_REG_AES_IN_DATA(s)		(0x10 + (s << 2))
 #define SSS_REG_AES_OUT_DATA(s)		(0x20 + (s << 2))
@@ -139,7 +138,7 @@
 						SSS_AES_REG(dev, reg))
 
 /* HW engine modes */
-#define FLAGS_AES_DECRYPT               _BIT(0)
+#define FLAGS_AES_DECRYPT               BIT(0)
 #define FLAGS_AES_MODE_MASK             _SBF(1, 0x03)
 #define FLAGS_AES_CBC                   _SBF(1, 0x01)
 #define FLAGS_AES_CTR                   _SBF(1, 0x02)
@@ -149,7 +148,6 @@
 
 /**
  * struct samsung_aes_variant - platform specific SSS driver data
- * @has_hash_irq: true if SSS module uses hash interrupt, false otherwise
  * @aes_offset: AES register offset from SSS module's base.
  *
  * Specifies platform specific configuration of SSS module.
@@ -157,7 +155,6 @@
  * expansion of its usage.
  */
 struct samsung_aes_variant {
-	bool			    has_hash_irq;
 	unsigned int		    aes_offset;
 };
 
@@ -178,7 +175,6 @@ struct s5p_aes_dev {
 	struct clk                 *clk;
 	void __iomem               *ioaddr;
 	void __iomem               *aes_ioaddr;
-	int                         irq_hash;
 	int                         irq_fc;
 
 	struct ablkcipher_request  *req;
@@ -186,6 +182,10 @@ struct s5p_aes_dev {
 	struct scatterlist         *sg_src;
 	struct scatterlist         *sg_dst;
 
+	/* In case of unaligned access: */
+	struct scatterlist         *sg_src_cpy;
+	struct scatterlist         *sg_dst_cpy;
+
 	struct tasklet_struct       tasklet;
 	struct crypto_queue         queue;
 	bool                        busy;
@@ -197,12 +197,10 @@ struct s5p_aes_dev {
 static struct s5p_aes_dev *s5p_dev;
 
 static const struct samsung_aes_variant s5p_aes_data = {
-	.has_hash_irq	= true,
 	.aes_offset	= 0x4000,
 };
 
 static const struct samsung_aes_variant exynos_aes_data = {
-	.has_hash_irq	= false,
 	.aes_offset	= 0x200,
 };
 
@@ -245,8 +243,45 @@ static void s5p_set_dma_outdata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 	SSS_WRITE(dev, FCBTDMAL, sg_dma_len(sg));
 }
 
+static void s5p_free_sg_cpy(struct s5p_aes_dev *dev, struct scatterlist **sg)
+{
+	int len;
+
+	if (!*sg)
+		return;
+
+	len = ALIGN(dev->req->nbytes, AES_BLOCK_SIZE);
+	free_pages((unsigned long)sg_virt(*sg), get_order(len));
+
+	kfree(*sg);
+	*sg = NULL;
+}
+
+static void s5p_sg_copy_buf(void *buf, struct scatterlist *sg,
+			    unsigned int nbytes, int out)
+{
+	struct scatter_walk walk;
+
+	if (!nbytes)
+		return;
+
+	scatterwalk_start(&walk, sg);
+	scatterwalk_copychunks(buf, &walk, nbytes, out);
+	scatterwalk_done(&walk, out, 0);
+}
+
 static void s5p_aes_complete(struct s5p_aes_dev *dev, int err)
 {
+	if (dev->sg_dst_cpy) {
+		dev_dbg(dev->dev,
+			"Copying %d bytes of output data back to original place\n",
+			dev->req->nbytes);
+		s5p_sg_copy_buf(sg_virt(dev->sg_dst_cpy), dev->req->dst,
+				dev->req->nbytes, 1);
+	}
+	s5p_free_sg_cpy(dev, &dev->sg_src_cpy);
+	s5p_free_sg_cpy(dev, &dev->sg_dst_cpy);
+
 	/* holding a lock outside */
 	dev->req->base.complete(&dev->req->base, err);
 	dev->busy = false;
@@ -262,15 +297,37 @@ static void s5p_unset_indata(struct s5p_aes_dev *dev)
 	dma_unmap_sg(dev->dev, dev->sg_src, 1, DMA_TO_DEVICE);
 }
 
+static int s5p_make_sg_cpy(struct s5p_aes_dev *dev, struct scatterlist *src,
+			    struct scatterlist **dst)
+{
+	void *pages;
+	int len;
+
+	*dst = kmalloc(sizeof(**dst), GFP_ATOMIC);
+	if (!*dst)
+		return -ENOMEM;
+
+	len = ALIGN(dev->req->nbytes, AES_BLOCK_SIZE);
+	pages = (void *)__get_free_pages(GFP_ATOMIC, get_order(len));
+	if (!pages) {
+		kfree(*dst);
+		*dst = NULL;
+		return -ENOMEM;
+	}
+
+	s5p_sg_copy_buf(pages, src, dev->req->nbytes, 0);
+
+	sg_init_table(*dst, 1);
+	sg_set_buf(*dst, pages, len);
+
+	return 0;
+}
+
 static int s5p_set_outdata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 {
 	int err;
 
-	if (!IS_ALIGNED(sg_dma_len(sg), AES_BLOCK_SIZE)) {
-		err = -EINVAL;
-		goto exit;
-	}
-	if (!sg_dma_len(sg)) {
+	if (!sg->length) {
 		err = -EINVAL;
 		goto exit;
 	}
@@ -284,7 +341,7 @@ static int s5p_set_outdata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 	dev->sg_dst = sg;
 	err = 0;
 
- exit:
+exit:
 	return err;
 }
 
@@ -292,11 +349,7 @@ static int s5p_set_indata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 {
 	int err;
 
-	if (!IS_ALIGNED(sg_dma_len(sg), AES_BLOCK_SIZE)) {
-		err = -EINVAL;
-		goto exit;
-	}
-	if (!sg_dma_len(sg)) {
+	if (!sg->length) {
 		err = -EINVAL;
 		goto exit;
 	}
@@ -310,47 +363,59 @@ static int s5p_set_indata(struct s5p_aes_dev *dev, struct scatterlist *sg)
 	dev->sg_src = sg;
 	err = 0;
 
- exit:
+exit:
 	return err;
 }
 
-static void s5p_aes_tx(struct s5p_aes_dev *dev)
+/*
+ * Returns true if new transmitting (output) data is ready and its
+ * address+length have to be written to device (by calling
+ * s5p_set_dma_outdata()). False otherwise.
+ */
+static bool s5p_aes_tx(struct s5p_aes_dev *dev)
 {
 	int err = 0;
+	bool ret = false;
 
 	s5p_unset_outdata(dev);
 
 	if (!sg_is_last(dev->sg_dst)) {
 		err = s5p_set_outdata(dev, sg_next(dev->sg_dst));
-		if (err) {
+		if (err)
 			s5p_aes_complete(dev, err);
-			return;
-		}
-
-		s5p_set_dma_outdata(dev, dev->sg_dst);
+		else
+			ret = true;
 	} else {
 		s5p_aes_complete(dev, err);
 
 		dev->busy = true;
 		tasklet_schedule(&dev->tasklet);
 	}
+
+	return ret;
 }
 
-static void s5p_aes_rx(struct s5p_aes_dev *dev)
+/*
+ * Returns true if new receiving (input) data is ready and its
+ * address+length have to be written to device (by calling
+ * s5p_set_dma_indata()). False otherwise.
+ */
+static bool s5p_aes_rx(struct s5p_aes_dev *dev)
 {
 	int err;
+	bool ret = false;
 
 	s5p_unset_indata(dev);
 
 	if (!sg_is_last(dev->sg_src)) {
 		err = s5p_set_indata(dev, sg_next(dev->sg_src));
-		if (err) {
+		if (err)
 			s5p_aes_complete(dev, err);
-			return;
-		}
-
-		s5p_set_dma_indata(dev, dev->sg_src);
+		else
+			ret = true;
 	}
+
+	return ret;
 }
 
 static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
@@ -359,18 +424,29 @@ static irqreturn_t s5p_aes_interrupt(int irq, void *dev_id)
 	struct s5p_aes_dev     *dev  = platform_get_drvdata(pdev);
 	uint32_t                status;
 	unsigned long           flags;
+	bool			set_dma_tx = false;
+	bool			set_dma_rx = false;
 
 	spin_lock_irqsave(&dev->lock, flags);
 
-	if (irq == dev->irq_fc) {
-		status = SSS_READ(dev, FCINTSTAT);
-		if (status & SSS_FCINTSTAT_BRDMAINT)
-			s5p_aes_rx(dev);
-		if (status & SSS_FCINTSTAT_BTDMAINT)
-			s5p_aes_tx(dev);
-
-		SSS_WRITE(dev, FCINTPEND, status);
-	}
+	status = SSS_READ(dev, FCINTSTAT);
+	if (status & SSS_FCINTSTAT_BRDMAINT)
+		set_dma_rx = s5p_aes_rx(dev);
+	if (status & SSS_FCINTSTAT_BTDMAINT)
+		set_dma_tx = s5p_aes_tx(dev);
+
+	SSS_WRITE(dev, FCINTPEND, status);
+
+	/*
+	 * Writing length of DMA block (either receiving or transmitting)
+	 * will start the operation immediately, so this should be done
+	 * at the end (even after clearing pending interrupts to not miss the
+	 * interrupt).
+	 */
+	if (set_dma_tx)
+		s5p_set_dma_outdata(dev, dev->sg_dst);
+	if (set_dma_rx)
+		s5p_set_dma_indata(dev, dev->sg_src);
 
 	spin_unlock_irqrestore(&dev->lock, flags);
 
@@ -395,6 +471,71 @@ static void s5p_set_aes(struct s5p_aes_dev *dev,
 	memcpy_toio(keystart, key, keylen);
 }
 
+static bool s5p_is_sg_aligned(struct scatterlist *sg)
+{
+	while (sg) {
+		if (!IS_ALIGNED(sg->length, AES_BLOCK_SIZE))
+			return false;
+		sg = sg_next(sg);
+	}
+
+	return true;
+}
+
+static int s5p_set_indata_start(struct s5p_aes_dev *dev,
+				struct ablkcipher_request *req)
+{
+	struct scatterlist *sg;
+	int err;
+
+	dev->sg_src_cpy = NULL;
+	sg = req->src;
+	if (!s5p_is_sg_aligned(sg)) {
+		dev_dbg(dev->dev,
+			"At least one unaligned source scatter list, making a copy\n");
+		err = s5p_make_sg_cpy(dev, sg, &dev->sg_src_cpy);
+		if (err)
+			return err;
+
+		sg = dev->sg_src_cpy;
+	}
+
+	err = s5p_set_indata(dev, sg);
+	if (err) {
+		s5p_free_sg_cpy(dev, &dev->sg_src_cpy);
+		return err;
+	}
+
+	return 0;
+}
+
+static int s5p_set_outdata_start(struct s5p_aes_dev *dev,
+				struct ablkcipher_request *req)
+{
+	struct scatterlist *sg;
+	int err;
+
+	dev->sg_dst_cpy = NULL;
+	sg = req->dst;
+	if (!s5p_is_sg_aligned(sg)) {
+		dev_dbg(dev->dev,
+			"At least one unaligned dest scatter list, making a copy\n");
+		err = s5p_make_sg_cpy(dev, sg, &dev->sg_dst_cpy);
+		if (err)
+			return err;
+
+		sg = dev->sg_dst_cpy;
+	}
+
+	err = s5p_set_outdata(dev, sg);
+	if (err) {
+		s5p_free_sg_cpy(dev, &dev->sg_dst_cpy);
+		return err;
+	}
+
+	return 0;
+}
+
 static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
 {
 	struct ablkcipher_request  *req = dev->req;
@@ -431,19 +572,19 @@ static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
 		  SSS_FCINTENCLR_BTDMAINTENCLR | SSS_FCINTENCLR_BRDMAINTENCLR);
 	SSS_WRITE(dev, FCFIFOCTRL, 0x00);
 
-	err = s5p_set_indata(dev, req->src);
+	err = s5p_set_indata_start(dev, req);
 	if (err)
 		goto indata_error;
 
-	err = s5p_set_outdata(dev, req->dst);
+	err = s5p_set_outdata_start(dev, req);
 	if (err)
 		goto outdata_error;
 
 	SSS_AES_WRITE(dev, AES_CONTROL, aes_control);
 	s5p_set_aes(dev, dev->ctx->aes_key, req->info, dev->ctx->keylen);
 
-	s5p_set_dma_indata(dev,  req->src);
-	s5p_set_dma_outdata(dev, req->dst);
+	s5p_set_dma_indata(dev,  dev->sg_src);
+	s5p_set_dma_outdata(dev, dev->sg_dst);
 
 	SSS_WRITE(dev, FCINTENSET,
 		  SSS_FCINTENSET_BTDMAINTENSET | SSS_FCINTENSET_BRDMAINTENSET);
@@ -452,10 +593,10 @@ static void s5p_aes_crypt_start(struct s5p_aes_dev *dev, unsigned long mode)
 
 	return;
 
- outdata_error:
+outdata_error:
 	s5p_unset_indata(dev);
 
- indata_error:
+indata_error:
 	s5p_aes_complete(dev, err);
 	spin_unlock_irqrestore(&dev->lock, flags);
 }
@@ -506,7 +647,7 @@ static int s5p_aes_handle_req(struct s5p_aes_dev *dev,
 
 	tasklet_schedule(&dev->tasklet);
 
- exit:
+exit:
 	return err;
 }
 
@@ -671,21 +812,6 @@ static int s5p_aes_probe(struct platform_device *pdev)
 		goto err_irq;
 	}
 
-	if (variant->has_hash_irq) {
-		pdata->irq_hash = platform_get_irq(pdev, 1);
-		if (pdata->irq_hash < 0) {
-			err = pdata->irq_hash;
-			dev_warn(dev, "hash interrupt is not available.\n");
-			goto err_irq;
-		}
-		err = devm_request_irq(dev, pdata->irq_hash, s5p_aes_interrupt,
-				       IRQF_SHARED, pdev->name, pdev);
-		if (err < 0) {
-			dev_warn(dev, "hash interrupt is not available.\n");
-			goto err_irq;
-		}
-	}
-
 	pdata->busy = false;
 	pdata->variant = variant;
 	pdata->dev = dev;
@@ -705,7 +831,7 @@ static int s5p_aes_probe(struct platform_device *pdev)
 
 	return 0;
 
- err_algs:
+err_algs:
 	dev_err(dev, "can't register '%s': %d\n", algs[i].cra_name, err);
 
 	for (j = 0; j < i; j++)
@@ -713,7 +839,7 @@ static int s5p_aes_probe(struct platform_device *pdev)
 
 	tasklet_kill(&pdata->tasklet);
 
- err_irq:
+err_irq:
 	clk_disable_unprepare(pdata->clk);
 
 	s5p_dev = NULL;

drivers/crypto/sunxi-ss/sun4i-ss-cipher.c

@@ -35,6 +35,7 @@ static int sun4i_ss_opti_poll(struct ablkcipher_request *areq)
 	unsigned int todo;
 	struct sg_mapping_iter mi, mo;
 	unsigned int oi, oo; /* offset for in and out */
+	unsigned long flags;
 
 	if (areq->nbytes == 0)
 		return 0;
@@ -49,7 +50,7 @@ static int sun4i_ss_opti_poll(struct ablkcipher_request *areq)
 		return -EINVAL;
 	}
 
-	spin_lock_bh(&ss->slock);
+	spin_lock_irqsave(&ss->slock, flags);
 
 	for (i = 0; i < op->keylen; i += 4)
 		writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);
@@ -117,7 +118,7 @@ release_ss:
 	sg_miter_stop(&mi);
 	sg_miter_stop(&mo);
 	writel(0, ss->base + SS_CTL);
-	spin_unlock_bh(&ss->slock);
+	spin_unlock_irqrestore(&ss->slock, flags);
 	return err;
 }
 
@@ -149,6 +150,7 @@ static int sun4i_ss_cipher_poll(struct ablkcipher_request *areq)
 	unsigned int ob = 0;	/* offset in buf */
 	unsigned int obo = 0;	/* offset in bufo*/
 	unsigned int obl = 0;	/* length of data in bufo */
+	unsigned long flags;
 
 	if (areq->nbytes == 0)
 		return 0;
@@ -181,7 +183,7 @@ static int sun4i_ss_cipher_poll(struct ablkcipher_request *areq)
 	if (no_chunk == 1)
 		return sun4i_ss_opti_poll(areq);
 
-	spin_lock_bh(&ss->slock);
+	spin_lock_irqsave(&ss->slock, flags);
 
 	for (i = 0; i < op->keylen; i += 4)
 		writel(*(op->key + i / 4), ss->base + SS_KEY0 + i);
@@ -307,7 +309,7 @@ release_ss:
 	sg_miter_stop(&mi);
 	sg_miter_stop(&mo);
 	writel(0, ss->base + SS_CTL);
-	spin_unlock_bh(&ss->slock);
+	spin_unlock_irqrestore(&ss->slock, flags);
 
 	return err;
 }

drivers/crypto/talitos.c

@@ -835,6 +835,16 @@ struct talitos_ahash_req_ctx {
 	struct scatterlist *psrc;
 };
 
+struct talitos_export_state {
+	u32 hw_context[TALITOS_MDEU_MAX_CONTEXT_SIZE / sizeof(u32)];
+	u8 buf[HASH_MAX_BLOCK_SIZE];
+	unsigned int swinit;
+	unsigned int first;
+	unsigned int last;
+	unsigned int to_hash_later;
+	unsigned int nbuf;
+};
+
 static int aead_setkey(struct crypto_aead *authenc,
 		       const u8 *key, unsigned int keylen)
 {
@@ -1981,6 +1991,46 @@ static int ahash_digest(struct ahash_request *areq)
 	return ahash_process_req(areq, areq->nbytes);
 }
 
+static int ahash_export(struct ahash_request *areq, void *out)
+{
+	struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
+	struct talitos_export_state *export = out;
+
+	memcpy(export->hw_context, req_ctx->hw_context,
+	       req_ctx->hw_context_size);
+	memcpy(export->buf, req_ctx->buf, req_ctx->nbuf);
+	export->swinit = req_ctx->swinit;
+	export->first = req_ctx->first;
+	export->last = req_ctx->last;
+	export->to_hash_later = req_ctx->to_hash_later;
+	export->nbuf = req_ctx->nbuf;
+
+	return 0;
+}
+
+static int ahash_import(struct ahash_request *areq, const void *in)
+{
+	struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
+	struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+	const struct talitos_export_state *export = in;
+
+	memset(req_ctx, 0, sizeof(*req_ctx));
+	req_ctx->hw_context_size =
+		(crypto_ahash_digestsize(tfm) <= SHA256_DIGEST_SIZE)
+			? TALITOS_MDEU_CONTEXT_SIZE_MD5_SHA1_SHA256
+			: TALITOS_MDEU_CONTEXT_SIZE_SHA384_SHA512;
+	memcpy(req_ctx->hw_context, export->hw_context,
+	       req_ctx->hw_context_size);
+	memcpy(req_ctx->buf, export->buf, export->nbuf);
+	req_ctx->swinit = export->swinit;
+	req_ctx->first = export->first;
+	req_ctx->last = export->last;
+	req_ctx->to_hash_later = export->to_hash_later;
+	req_ctx->nbuf = export->nbuf;
+
+	return 0;
+}
+
 struct keyhash_result {
 	struct completion completion;
 	int err;
@@ -2458,6 +2508,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = MD5_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "md5",
 				.cra_driver_name = "md5-talitos",
@@ -2473,6 +2524,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA1_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "sha1",
 				.cra_driver_name = "sha1-talitos",
@@ -2488,6 +2540,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA224_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "sha224",
 				.cra_driver_name = "sha224-talitos",
@@ -2503,6 +2556,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA256_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "sha256",
 				.cra_driver_name = "sha256-talitos",
@@ -2518,6 +2572,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA384_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "sha384",
 				.cra_driver_name = "sha384-talitos",
@@ -2533,6 +2588,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA512_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "sha512",
 				.cra_driver_name = "sha512-talitos",
@@ -2548,6 +2604,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = MD5_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(md5)",
 				.cra_driver_name = "hmac-md5-talitos",
@@ -2563,6 +2620,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA1_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(sha1)",
 				.cra_driver_name = "hmac-sha1-talitos",
@@ -2578,6 +2636,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA224_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(sha224)",
 				.cra_driver_name = "hmac-sha224-talitos",
@@ -2593,6 +2652,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA256_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(sha256)",
 				.cra_driver_name = "hmac-sha256-talitos",
@@ -2608,6 +2668,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA384_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(sha384)",
 				.cra_driver_name = "hmac-sha384-talitos",
@@ -2623,6 +2684,7 @@ static struct talitos_alg_template driver_algs[] = {
 	{	.type = CRYPTO_ALG_TYPE_AHASH,
 		.alg.hash = {
 			.halg.digestsize = SHA512_DIGEST_SIZE,
+			.halg.statesize = sizeof(struct talitos_export_state),
 			.halg.base = {
 				.cra_name = "hmac(sha512)",
 				.cra_driver_name = "hmac-sha512-talitos",
@@ -2814,6 +2876,8 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
 		t_alg->algt.alg.hash.finup = ahash_finup;
 		t_alg->algt.alg.hash.digest = ahash_digest;
 		t_alg->algt.alg.hash.setkey = ahash_setkey;
+		t_alg->algt.alg.hash.import = ahash_import;
+		t_alg->algt.alg.hash.export = ahash_export;
 
 		if (!(priv->features & TALITOS_FTR_HMAC_OK) &&
 		    !strncmp(alg->cra_name, "hmac", 4)) {

drivers/crypto/vmx/ppc-xlate.pl

@@ -139,6 +139,26 @@ my $vmr = sub {
     "	vor	$vx,$vy,$vy";
 };
 
+# Some ABIs specify vrsave, special-purpose register #256, as reserved
+# for system use.
+my $no_vrsave = ($flavour =~ /aix|linux64le/);
+my $mtspr = sub {
+    my ($f,$idx,$ra) = @_;
+    if ($idx == 256 && $no_vrsave) {
+	"	or	$ra,$ra,$ra";
+    } else {
+	"	mtspr	$idx,$ra";
+    }
+};
+my $mfspr = sub {
+    my ($f,$rd,$idx) = @_;
+    if ($idx == 256 && $no_vrsave) {
+	"	li	$rd,-1";
+    } else {
+	"	mfspr	$rd,$idx";
+    }
+};
+
 # PowerISA 2.06 stuff
 sub vsxmem_op {
     my ($f, $vrt, $ra, $rb, $op) = @_;

fs/ecryptfs/crypto.c

@@ -105,19 +105,7 @@ static int ecryptfs_calculate_md5(char *dst,
 	struct crypto_shash *tfm;
 	int rc = 0;
 
-	mutex_lock(&crypt_stat->cs_hash_tfm_mutex);
 	tfm = crypt_stat->hash_tfm;
-	if (!tfm) {
-		tfm = crypto_alloc_shash(ECRYPTFS_DEFAULT_HASH, 0, 0);
-		if (IS_ERR(tfm)) {
-			rc = PTR_ERR(tfm);
-			ecryptfs_printk(KERN_ERR, "Error attempting to "
-					"allocate crypto context; rc = [%d]\n",
-					rc);
-			goto out;
-		}
-		crypt_stat->hash_tfm = tfm;
-	}
 	rc = ecryptfs_hash_digest(tfm, src, len, dst);
 	if (rc) {
 		printk(KERN_ERR
@@ -126,7 +114,6 @@ static int ecryptfs_calculate_md5(char *dst,
 		goto out;
 	}
 out:
-	mutex_unlock(&crypt_stat->cs_hash_tfm_mutex);
 	return rc;
 }
 
@@ -207,16 +194,29 @@ out:
  *
  * Initialize the crypt_stat structure.
  */
-void
-ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat)
+int ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat)
 {
+	struct crypto_shash *tfm;
+	int rc;
+
+	tfm = crypto_alloc_shash(ECRYPTFS_DEFAULT_HASH, 0, 0);
+	if (IS_ERR(tfm)) {
+		rc = PTR_ERR(tfm);
+		ecryptfs_printk(KERN_ERR, "Error attempting to "
+				"allocate crypto context; rc = [%d]\n",
+				rc);
+		return rc;
+	}
+
 	memset((void *)crypt_stat, 0, sizeof(struct ecryptfs_crypt_stat));
 	INIT_LIST_HEAD(&crypt_stat->keysig_list);
 	mutex_init(&crypt_stat->keysig_list_mutex);
 	mutex_init(&crypt_stat->cs_mutex);
 	mutex_init(&crypt_stat->cs_tfm_mutex);
-	mutex_init(&crypt_stat->cs_hash_tfm_mutex);
+	crypt_stat->hash_tfm = tfm;
 	crypt_stat->flags |= ECRYPTFS_STRUCT_INITIALIZED;
+
+	return 0;
 }
 
 /**

fs/ecryptfs/ecryptfs_kernel.h

@@ -242,7 +242,6 @@ struct ecryptfs_crypt_stat {
 	struct list_head keysig_list;
 	struct mutex keysig_list_mutex;
 	struct mutex cs_tfm_mutex;
-	struct mutex cs_hash_tfm_mutex;
 	struct mutex cs_mutex;
 };
 
@@ -577,7 +576,7 @@ int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg,
 			int sg_size);
 int ecryptfs_compute_root_iv(struct ecryptfs_crypt_stat *crypt_stat);
 void ecryptfs_rotate_iv(unsigned char *iv);
-void ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
+int ecryptfs_init_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
 void ecryptfs_destroy_crypt_stat(struct ecryptfs_crypt_stat *crypt_stat);
 void ecryptfs_destroy_mount_crypt_stat(
 	struct ecryptfs_mount_crypt_stat *mount_crypt_stat);

fs/ecryptfs/inode.c

@@ -898,8 +898,11 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
 	struct ecryptfs_crypt_stat *crypt_stat;
 
 	crypt_stat = &ecryptfs_inode_to_private(d_inode(dentry))->crypt_stat;
-	if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED))
-		ecryptfs_init_crypt_stat(crypt_stat);
+	if (!(crypt_stat->flags & ECRYPTFS_STRUCT_INITIALIZED)) {
+		rc = ecryptfs_init_crypt_stat(crypt_stat);
+		if (rc)
+			return rc;
+	}
 	inode = d_inode(dentry);
 	lower_inode = ecryptfs_inode_to_lower(inode);
 	lower_dentry = ecryptfs_dentry_to_lower(dentry);

fs/ecryptfs/super.c

@@ -55,7 +55,10 @@ static struct inode *ecryptfs_alloc_inode(struct super_block *sb)
 	inode_info = kmem_cache_alloc(ecryptfs_inode_info_cache, GFP_KERNEL);
 	if (unlikely(!inode_info))
 		goto out;
-	ecryptfs_init_crypt_stat(&inode_info->crypt_stat);
+	if (ecryptfs_init_crypt_stat(&inode_info->crypt_stat)) {
+		kmem_cache_free(ecryptfs_inode_info_cache, inode_info);
+		goto out;
+	}
 	mutex_init(&inode_info->lower_file_mutex);
 	atomic_set(&inode_info->lower_file_count, 0);
 	inode_info->lower_file = NULL;

include/crypto/aead.h

@@ -405,8 +405,7 @@ static inline void aead_request_set_tfm(struct aead_request *req,
  * encrypt and decrypt API calls. During the allocation, the provided aead
  * handle is registered in the request data structure.
  *
- * Return: allocated request handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
+ * Return: allocated request handle in case of success, or NULL if out of memory
  */
 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
 						      gfp_t gfp)

include/crypto/hash.h

@@ -547,8 +547,7 @@ static inline void ahash_request_set_tfm(struct ahash_request *req,
  * the allocation, the provided ahash handle
  * is registered in the request data structure.
  *
- * Return: allocated request handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
+ * Return: allocated request handle in case of success, or NULL if out of memory
  */
 static inline struct ahash_request *ahash_request_alloc(
 	struct crypto_ahash *tfm, gfp_t gfp)

include/crypto/skcipher.h

@@ -425,8 +425,7 @@ static inline struct skcipher_request *skcipher_request_cast(
  * encrypt and decrypt API calls. During the allocation, the provided skcipher
  * handle is registered in the request data structure.
  *
- * Return: allocated request handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
+ * Return: allocated request handle in case of success, or NULL if out of memory
  */
 static inline struct skcipher_request *skcipher_request_alloc(
 	struct crypto_skcipher *tfm, gfp_t gfp)

include/linux/ccp.h

@@ -1,9 +1,10 @@
 /*
  * AMD Cryptographic Coprocessor (CCP) driver
  *
- * Copyright (C) 2013 Advanced Micro Devices, Inc.
+ * Copyright (C) 2013,2016 Advanced Micro Devices, Inc.
  *
  * Author: Tom Lendacky <thomas.lendacky@amd.com>
+ * Author: Gary R Hook <gary.hook@amd.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -381,6 +382,35 @@ struct ccp_passthru_engine {
 	u32 final;
 };
 
+/**
+ * struct ccp_passthru_nomap_engine - CCP pass-through operation
+ *   without performing DMA mapping
+ * @bit_mod: bitwise operation to perform
+ * @byte_swap: byteswap operation to perform
+ * @mask: mask to be applied to data
+ * @mask_len: length in bytes of mask
+ * @src: data to be used for this operation
+ * @dst: data produced by this operation
+ * @src_len: length in bytes of data used for this operation
+ * @final: indicate final pass-through operation
+ *
+ * Variables required to be set when calling ccp_enqueue_cmd():
+ *   - bit_mod, byte_swap, src, dst, src_len
+ *   - mask, mask_len if bit_mod is not CCP_PASSTHRU_BITWISE_NOOP
+ */
+struct ccp_passthru_nomap_engine {
+	enum ccp_passthru_bitwise bit_mod;
+	enum ccp_passthru_byteswap byte_swap;
+
+	dma_addr_t mask;
+	u32 mask_len;		/* In bytes */
+
+	dma_addr_t src_dma, dst_dma;
+	u64 src_len;		/* In bytes */
+
+	u32 final;
+};
+
 /***** ECC engine *****/
 #define CCP_ECC_MODULUS_BYTES	48	/* 384-bits */
 #define CCP_ECC_MAX_OPERANDS	6
@@ -522,7 +552,8 @@ enum ccp_engine {
 };
 
 /* Flag values for flags member of ccp_cmd */
-#define CCP_CMD_MAY_BACKLOG	0x00000001
+#define CCP_CMD_MAY_BACKLOG		0x00000001
+#define CCP_CMD_PASSTHRU_NO_DMA_MAP	0x00000002
 
 /**
  * struct ccp_cmd - CPP operation request
@@ -562,6 +593,7 @@ struct ccp_cmd {
 		struct ccp_sha_engine sha;
 		struct ccp_rsa_engine rsa;
 		struct ccp_passthru_engine passthru;
+		struct ccp_passthru_nomap_engine passthru_nomap;
 		struct ccp_ecc_engine ecc;
 	} u;
 

include/linux/crypto.h

@@ -948,8 +948,7 @@ static inline struct ablkcipher_request *ablkcipher_request_cast(
  * encrypt and decrypt API calls. During the allocation, the provided ablkcipher
  * handle is registered in the request data structure.
  *
- * Return: allocated request handle in case of success; IS_ERR() is true in case
- *	   of an error, PTR_ERR() returns the error code.
+ * Return: allocated request handle in case of success, or NULL if out of memory
  */
 static inline struct ablkcipher_request *ablkcipher_request_alloc(
 	struct crypto_ablkcipher *tfm, gfp_t gfp)

lib/asn1_decoder.c

@@ -12,6 +12,7 @@
 #include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
+#include <linux/module.h>
 #include <linux/asn1_decoder.h>
 #include <linux/asn1_ber_bytecode.h>
 
@@ -506,3 +507,5 @@ error:
 	return -EBADMSG;
 }
 EXPORT_SYMBOL_GPL(asn1_ber_decoder);
+
+MODULE_LICENSE("GPL");

lib/mpi/mpicoder.c

@@ -20,6 +20,8 @@
 
 #include <linux/bitops.h>
 #include <linux/count_zeros.h>
+#include <linux/byteorder/generic.h>
+#include <linux/string.h>
 #include "mpi-internal.h"
 
 #define MAX_EXTERN_MPI_BITS 16384
@@ -163,7 +165,13 @@ int mpi_read_buffer(MPI a, uint8_t *buf, unsigned buf_len, unsigned *nbytes,
 		    int *sign)
 {
 	uint8_t *p;
-	mpi_limb_t alimb;
+#if BYTES_PER_MPI_LIMB == 4
+	__be32 alimb;
+#elif BYTES_PER_MPI_LIMB == 8
+	__be64 alimb;
+#else
+#error please implement for this limb size.
+#endif
 	unsigned int n = mpi_get_size(a);
 	int i, lzeros;
 
@@ -183,38 +191,19 @@ int mpi_read_buffer(MPI a, uint8_t *buf, unsigned buf_len, unsigned *nbytes,
 	p = buf;
 	*nbytes = n - lzeros;
 
-	for (i = a->nlimbs - 1; i >= 0; i--) {
-		alimb = a->d[i];
+	for (i = a->nlimbs - 1 - lzeros / BYTES_PER_MPI_LIMB,
+			lzeros %= BYTES_PER_MPI_LIMB;
+		i >= 0; i--) {
 #if BYTES_PER_MPI_LIMB == 4
-		*p++ = alimb >> 24;
-		*p++ = alimb >> 16;
-		*p++ = alimb >> 8;
-		*p++ = alimb;
+		alimb = cpu_to_be32(a->d[i]);
 #elif BYTES_PER_MPI_LIMB == 8
-		*p++ = alimb >> 56;
-		*p++ = alimb >> 48;
-		*p++ = alimb >> 40;
-		*p++ = alimb >> 32;
-		*p++ = alimb >> 24;
-		*p++ = alimb >> 16;
-		*p++ = alimb >> 8;
-		*p++ = alimb;
+		alimb = cpu_to_be64(a->d[i]);
 #else
 #error please implement for this limb size.
 #endif
-
-		if (lzeros > 0) {
-			if (lzeros >= sizeof(alimb)) {
-				p -= sizeof(alimb);
-			} else {
-				mpi_limb_t *limb1 = (void *)p - sizeof(alimb);
-				mpi_limb_t *limb2 = (void *)p - sizeof(alimb)
-							+ lzeros;
-				*limb1 = *limb2;
-				p -= lzeros;
-			}
-			lzeros -= sizeof(alimb);
-		}
+		memcpy(p, (u8 *)&alimb + lzeros, BYTES_PER_MPI_LIMB - lzeros);
+		p += BYTES_PER_MPI_LIMB - lzeros;
+		lzeros = 0;
 	}
 	return 0;
 }
@@ -359,7 +348,13 @@ int mpi_write_to_sgl(MPI a, struct scatterlist *sgl, unsigned *nbytes,
 		     int *sign)
 {
 	u8 *p, *p2;
-	mpi_limb_t alimb, alimb2;
+#if BYTES_PER_MPI_LIMB == 4
+	__be32 alimb;
+#elif BYTES_PER_MPI_LIMB == 8
+	__be64 alimb;
+#else
+#error please implement for this limb size.
+#endif
 	unsigned int n = mpi_get_size(a);
 	int i, x, y = 0, lzeros, buf_len;
 
@@ -380,42 +375,22 @@ int mpi_write_to_sgl(MPI a, struct scatterlist *sgl, unsigned *nbytes,
 	buf_len = sgl->length;
 	p2 = sg_virt(sgl);
 
-	for (i = a->nlimbs - 1; i >= 0; i--) {
-		alimb = a->d[i];
-		p = (u8 *)&alimb2;
+	for (i = a->nlimbs - 1 - lzeros / BYTES_PER_MPI_LIMB,
+			lzeros %= BYTES_PER_MPI_LIMB;
+		i >= 0; i--) {
 #if BYTES_PER_MPI_LIMB == 4
-		*p++ = alimb >> 24;
-		*p++ = alimb >> 16;
-		*p++ = alimb >> 8;
-		*p++ = alimb;
+		alimb = cpu_to_be32(a->d[i]);
 #elif BYTES_PER_MPI_LIMB == 8
-		*p++ = alimb >> 56;
-		*p++ = alimb >> 48;
-		*p++ = alimb >> 40;
-		*p++ = alimb >> 32;
-		*p++ = alimb >> 24;
-		*p++ = alimb >> 16;
-		*p++ = alimb >> 8;
-		*p++ = alimb;
+		alimb = cpu_to_be64(a->d[i]);
 #else
 #error please implement for this limb size.
 #endif
-		if (lzeros > 0) {
-			if (lzeros >= sizeof(alimb)) {
-				p -= sizeof(alimb);
-				continue;
-			} else {
-				mpi_limb_t *limb1 = (void *)p - sizeof(alimb);
-				mpi_limb_t *limb2 = (void *)p - sizeof(alimb)
-							+ lzeros;
-				*limb1 = *limb2;
-				p -= lzeros;
-				y = lzeros;
-			}
-			lzeros -= sizeof(alimb);
+		if (lzeros) {
+			y = lzeros;
+			lzeros = 0;
 		}
 
-		p = p - (sizeof(alimb) - y);
+		p = (u8 *)&alimb + y;
 
 		for (x = 0; x < sizeof(alimb) - y; x++) {
 			if (!buf_len) {
@@ -443,15 +418,15 @@ EXPORT_SYMBOL_GPL(mpi_write_to_sgl);
  * a new MPI and reads the content of the sgl to the MPI.
  *
  * @sgl:	scatterlist to read from
- * @len:	number of bytes to read
+ * @nbytes:	number of bytes to read
  *
  * Return:	Pointer to a new MPI or NULL on error
  */
-MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len)
+MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int nbytes)
 {
 	struct scatterlist *sg;
 	int x, i, j, z, lzeros, ents;
-	unsigned int nbits, nlimbs, nbytes;
+	unsigned int nbits, nlimbs;
 	mpi_limb_t a;
 	MPI val = NULL;
 
@@ -472,16 +447,12 @@ MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len)
 			break;
 
 		ents--;
+		nbytes -= lzeros;
 		lzeros = 0;
 	}
 
 	sgl = sg;
-
-	if (!ents)
-		nbytes = 0;
-	else
-		nbytes = len - lzeros;
-
+	nbytes -= lzeros;
 	nbits = nbytes * 8;
 	if (nbits > MAX_EXTERN_MPI_BITS) {
 		pr_info("MPI: mpi too large (%u bits)\n", nbits);
@@ -489,9 +460,8 @@ MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len)
 	}
 
 	if (nbytes > 0)
-		nbits -= count_leading_zeros(*(u8 *)(sg_virt(sgl) + lzeros));
-	else
-		nbits = 0;
+		nbits -= count_leading_zeros(*(u8 *)(sg_virt(sgl) + lzeros)) -
+			(BITS_PER_LONG - 8);
 
 	nlimbs = DIV_ROUND_UP(nbytes, BYTES_PER_MPI_LIMB);
 	val = mpi_alloc(nlimbs);
@@ -507,19 +477,14 @@ MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len)
 
 	j = nlimbs - 1;
 	a = 0;
-	z = 0;
-	x = BYTES_PER_MPI_LIMB - nbytes % BYTES_PER_MPI_LIMB;
-	x %= BYTES_PER_MPI_LIMB;
+	z = BYTES_PER_MPI_LIMB - nbytes % BYTES_PER_MPI_LIMB;
+	z %= BYTES_PER_MPI_LIMB;
 
 	for_each_sg(sgl, sg, ents, i) {
 		const u8 *buffer = sg_virt(sg) + lzeros;
 		int len = sg->length - lzeros;
-		int buf_shift = x;
-
-		if  (sg_is_last(sg) && (len % BYTES_PER_MPI_LIMB))
-			len += BYTES_PER_MPI_LIMB - (len % BYTES_PER_MPI_LIMB);
 
-		for (; x < len + buf_shift; x++) {
+		for (x = 0; x < len; x++) {
 			a <<= 8;
 			a |= *buffer++;
 			if (((z + x + 1) % BYTES_PER_MPI_LIMB) == 0) {
@@ -528,7 +493,6 @@ MPI mpi_read_raw_from_sgl(struct scatterlist *sgl, unsigned int len)
 			}
 		}
 		z += x;
-		x = 0;
 		lzeros = 0;
 	}
 	return val;