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path: root/drivers/crypto/inside-secure/safexcel_cipher.c
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Diffstat (limited to 'drivers/crypto/inside-secure/safexcel_cipher.c')
-rw-r--r--drivers/crypto/inside-secure/safexcel_cipher.c642
1 files changed, 522 insertions, 120 deletions
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index bafb60505fab..6bb60fda2043 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -12,8 +12,12 @@
#include <linux/dma-mapping.h>
#include <linux/dmapool.h>
+#include <crypto/aead.h>
#include <crypto/aes.h>
+#include <crypto/authenc.h>
+#include <crypto/sha.h>
#include <crypto/skcipher.h>
+#include <crypto/internal/aead.h>
#include <crypto/internal/skcipher.h>
#include "safexcel.h"
@@ -28,9 +32,16 @@ struct safexcel_cipher_ctx {
struct safexcel_crypto_priv *priv;
u32 mode;
+ bool aead;
__le32 key[8];
unsigned int key_len;
+
+ /* All the below is AEAD specific */
+ u32 alg;
+ u32 state_sz;
+ u32 ipad[SHA256_DIGEST_SIZE / sizeof(u32)];
+ u32 opad[SHA256_DIGEST_SIZE / sizeof(u32)];
};
struct safexcel_cipher_req {
@@ -38,18 +49,16 @@ struct safexcel_cipher_req {
bool needs_inv;
};
-static void safexcel_cipher_token(struct safexcel_cipher_ctx *ctx,
- struct crypto_async_request *async,
- struct safexcel_command_desc *cdesc,
- u32 length)
+static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv,
+ struct safexcel_command_desc *cdesc,
+ u32 length)
{
- struct skcipher_request *req = skcipher_request_cast(async);
struct safexcel_token *token;
unsigned offset = 0;
if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) {
offset = AES_BLOCK_SIZE / sizeof(u32);
- memcpy(cdesc->control_data.token, req->iv, AES_BLOCK_SIZE);
+ memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE);
cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD;
}
@@ -65,8 +74,64 @@ static void safexcel_cipher_token(struct safexcel_cipher_ctx *ctx,
EIP197_TOKEN_INS_TYPE_OUTPUT;
}
-static int safexcel_aes_setkey(struct crypto_skcipher *ctfm, const u8 *key,
- unsigned int len)
+static void safexcel_aead_token(struct safexcel_cipher_ctx *ctx, u8 *iv,
+ struct safexcel_command_desc *cdesc,
+ enum safexcel_cipher_direction direction,
+ u32 cryptlen, u32 assoclen, u32 digestsize)
+{
+ struct safexcel_token *token;
+ unsigned offset = 0;
+
+ if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) {
+ offset = AES_BLOCK_SIZE / sizeof(u32);
+ memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE);
+
+ cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD;
+ }
+
+ token = (struct safexcel_token *)(cdesc->control_data.token + offset);
+
+ if (direction == SAFEXCEL_DECRYPT)
+ cryptlen -= digestsize;
+
+ token[0].opcode = EIP197_TOKEN_OPCODE_DIRECTION;
+ token[0].packet_length = assoclen;
+ token[0].instructions = EIP197_TOKEN_INS_TYPE_HASH |
+ EIP197_TOKEN_INS_TYPE_OUTPUT;
+
+ token[1].opcode = EIP197_TOKEN_OPCODE_DIRECTION;
+ token[1].packet_length = cryptlen;
+ token[1].stat = EIP197_TOKEN_STAT_LAST_HASH;
+ token[1].instructions = EIP197_TOKEN_INS_LAST |
+ EIP197_TOKEN_INS_TYPE_CRYTO |
+ EIP197_TOKEN_INS_TYPE_HASH |
+ EIP197_TOKEN_INS_TYPE_OUTPUT;
+
+ if (direction == SAFEXCEL_ENCRYPT) {
+ token[2].opcode = EIP197_TOKEN_OPCODE_INSERT;
+ token[2].packet_length = digestsize;
+ token[2].stat = EIP197_TOKEN_STAT_LAST_HASH |
+ EIP197_TOKEN_STAT_LAST_PACKET;
+ token[2].instructions = EIP197_TOKEN_INS_TYPE_OUTPUT |
+ EIP197_TOKEN_INS_INSERT_HASH_DIGEST;
+ } else {
+ token[2].opcode = EIP197_TOKEN_OPCODE_RETRIEVE;
+ token[2].packet_length = digestsize;
+ token[2].stat = EIP197_TOKEN_STAT_LAST_HASH |
+ EIP197_TOKEN_STAT_LAST_PACKET;
+ token[2].instructions = EIP197_TOKEN_INS_INSERT_HASH_DIGEST;
+
+ token[3].opcode = EIP197_TOKEN_OPCODE_VERIFY;
+ token[3].packet_length = digestsize |
+ EIP197_TOKEN_HASH_RESULT_VERIFY;
+ token[3].stat = EIP197_TOKEN_STAT_LAST_HASH |
+ EIP197_TOKEN_STAT_LAST_PACKET;
+ token[3].instructions = EIP197_TOKEN_INS_TYPE_OUTPUT;
+ }
+}
+
+static int safexcel_skcipher_aes_setkey(struct crypto_skcipher *ctfm,
+ const u8 *key, unsigned int len)
{
struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm);
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
@@ -98,41 +163,123 @@ static int safexcel_aes_setkey(struct crypto_skcipher *ctfm, const u8 *key,
return 0;
}
+static int safexcel_aead_aes_setkey(struct crypto_aead *ctfm, const u8 *key,
+ unsigned int len)
+{
+ struct crypto_tfm *tfm = crypto_aead_tfm(ctfm);
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct safexcel_ahash_export_state istate, ostate;
+ struct safexcel_crypto_priv *priv = ctx->priv;
+ struct crypto_authenc_keys keys;
+
+ if (crypto_authenc_extractkeys(&keys, key, len) != 0)
+ goto badkey;
+
+ if (keys.enckeylen > sizeof(ctx->key))
+ goto badkey;
+
+ /* Encryption key */
+ if (priv->version == EIP197 && ctx->base.ctxr_dma &&
+ memcmp(ctx->key, keys.enckey, keys.enckeylen))
+ ctx->base.needs_inv = true;
+
+ /* Auth key */
+ switch (ctx->alg) {
+ case CONTEXT_CONTROL_CRYPTO_ALG_SHA1:
+ if (safexcel_hmac_setkey("safexcel-sha1", keys.authkey,
+ keys.authkeylen, &istate, &ostate))
+ goto badkey;
+ break;
+ case CONTEXT_CONTROL_CRYPTO_ALG_SHA224:
+ if (safexcel_hmac_setkey("safexcel-sha224", keys.authkey,
+ keys.authkeylen, &istate, &ostate))
+ goto badkey;
+ break;
+ case CONTEXT_CONTROL_CRYPTO_ALG_SHA256:
+ if (safexcel_hmac_setkey("safexcel-sha256", keys.authkey,
+ keys.authkeylen, &istate, &ostate))
+ goto badkey;
+ break;
+ default:
+ dev_err(priv->dev, "aead: unsupported hash algorithm\n");
+ goto badkey;
+ }
+
+ crypto_aead_set_flags(ctfm, crypto_aead_get_flags(ctfm) &
+ CRYPTO_TFM_RES_MASK);
+
+ if (priv->version == EIP197 && ctx->base.ctxr_dma &&
+ (memcmp(ctx->ipad, istate.state, ctx->state_sz) ||
+ memcmp(ctx->opad, ostate.state, ctx->state_sz)))
+ ctx->base.needs_inv = true;
+
+ /* Now copy the keys into the context */
+ memcpy(ctx->key, keys.enckey, keys.enckeylen);
+ ctx->key_len = keys.enckeylen;
+
+ memcpy(ctx->ipad, &istate.state, ctx->state_sz);
+ memcpy(ctx->opad, &ostate.state, ctx->state_sz);
+
+ memzero_explicit(&keys, sizeof(keys));
+ return 0;
+
+badkey:
+ crypto_aead_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ memzero_explicit(&keys, sizeof(keys));
+ return -EINVAL;
+}
+
static int safexcel_context_control(struct safexcel_cipher_ctx *ctx,
struct crypto_async_request *async,
+ struct safexcel_cipher_req *sreq,
struct safexcel_command_desc *cdesc)
{
struct safexcel_crypto_priv *priv = ctx->priv;
- struct skcipher_request *req = skcipher_request_cast(async);
- struct safexcel_cipher_req *sreq = skcipher_request_ctx(req);
int ctrl_size;
- if (sreq->direction == SAFEXCEL_ENCRYPT)
+ if (ctx->aead) {
+ if (sreq->direction == SAFEXCEL_ENCRYPT)
+ cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_ENCRYPT_HASH_OUT;
+ else
+ cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_HASH_DECRYPT_IN;
+ } else {
cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_CRYPTO_OUT;
- else
- cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_CRYPTO_IN;
+
+ /* The decryption control type is a combination of the
+ * encryption type and CONTEXT_CONTROL_TYPE_NULL_IN, for all
+ * types.
+ */
+ if (sreq->direction == SAFEXCEL_DECRYPT)
+ cdesc->control_data.control0 |= CONTEXT_CONTROL_TYPE_NULL_IN;
+ }
cdesc->control_data.control0 |= CONTEXT_CONTROL_KEY_EN;
cdesc->control_data.control1 |= ctx->mode;
+ if (ctx->aead)
+ cdesc->control_data.control0 |= CONTEXT_CONTROL_DIGEST_HMAC |
+ ctx->alg;
+
switch (ctx->key_len) {
case AES_KEYSIZE_128:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128;
- ctrl_size = 4;
break;
case AES_KEYSIZE_192:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192;
- ctrl_size = 6;
break;
case AES_KEYSIZE_256:
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256;
- ctrl_size = 8;
break;
default:
dev_err(priv->dev, "aes keysize not supported: %u\n",
ctx->key_len);
return -EINVAL;
}
+
+ ctrl_size = ctx->key_len / sizeof(u32);
+ if (ctx->aead)
+ /* Take in account the ipad+opad digests */
+ ctrl_size += ctx->state_sz / sizeof(u32) * 2;
cdesc->control_data.control0 |= CONTEXT_CONTROL_SIZE(ctrl_size);
return 0;
@@ -140,9 +287,12 @@ static int safexcel_context_control(struct safexcel_cipher_ctx *ctx,
static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int ring,
struct crypto_async_request *async,
+ struct scatterlist *src,
+ struct scatterlist *dst,
+ unsigned int cryptlen,
+ struct safexcel_cipher_req *sreq,
bool *should_complete, int *ret)
{
- struct skcipher_request *req = skcipher_request_cast(async);
struct safexcel_result_desc *rdesc;
int ndesc = 0;
@@ -158,12 +308,8 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
break;
}
- if (rdesc->result_data.error_code) {
- dev_err(priv->dev,
- "cipher: result: result descriptor error (%d)\n",
- rdesc->result_data.error_code);
- *ret = -EIO;
- }
+ if (likely(!*ret))
+ *ret = safexcel_rdesc_check_errors(priv, rdesc);
ndesc++;
} while (!rdesc->last_seg);
@@ -171,16 +317,16 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
safexcel_complete(priv, ring);
spin_unlock_bh(&priv->ring[ring].egress_lock);
- if (req->src == req->dst) {
- dma_unmap_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ if (src == dst) {
+ dma_unmap_sg(priv->dev, src,
+ sg_nents_for_len(src, cryptlen),
DMA_BIDIRECTIONAL);
} else {
- dma_unmap_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ dma_unmap_sg(priv->dev, src,
+ sg_nents_for_len(src, cryptlen),
DMA_TO_DEVICE);
- dma_unmap_sg(priv->dev, req->dst,
- sg_nents_for_len(req->dst, req->cryptlen),
+ dma_unmap_sg(priv->dev, dst,
+ sg_nents_for_len(dst, cryptlen),
DMA_FROM_DEVICE);
}
@@ -189,39 +335,43 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin
return ndesc;
}
-static int safexcel_aes_send(struct crypto_async_request *async,
- int ring, struct safexcel_request *request,
- int *commands, int *results)
+static int safexcel_aes_send(struct crypto_async_request *base, int ring,
+ struct safexcel_request *request,
+ struct safexcel_cipher_req *sreq,
+ struct scatterlist *src, struct scatterlist *dst,
+ unsigned int cryptlen, unsigned int assoclen,
+ unsigned int digestsize, u8 *iv, int *commands,
+ int *results)
{
- struct skcipher_request *req = skcipher_request_cast(async);
- struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
struct safexcel_command_desc *cdesc;
struct safexcel_result_desc *rdesc;
struct scatterlist *sg;
- int nr_src, nr_dst, n_cdesc = 0, n_rdesc = 0, queued = req->cryptlen;
+ unsigned int totlen = cryptlen + assoclen;
+ int nr_src, nr_dst, n_cdesc = 0, n_rdesc = 0, queued = totlen;
int i, ret = 0;
- if (req->src == req->dst) {
- nr_src = dma_map_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ if (src == dst) {
+ nr_src = dma_map_sg(priv->dev, src,
+ sg_nents_for_len(src, totlen),
DMA_BIDIRECTIONAL);
nr_dst = nr_src;
if (!nr_src)
return -EINVAL;
} else {
- nr_src = dma_map_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ nr_src = dma_map_sg(priv->dev, src,
+ sg_nents_for_len(src, totlen),
DMA_TO_DEVICE);
if (!nr_src)
return -EINVAL;
- nr_dst = dma_map_sg(priv->dev, req->dst,
- sg_nents_for_len(req->dst, req->cryptlen),
+ nr_dst = dma_map_sg(priv->dev, dst,
+ sg_nents_for_len(dst, totlen),
DMA_FROM_DEVICE);
if (!nr_dst) {
- dma_unmap_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ dma_unmap_sg(priv->dev, src,
+ sg_nents_for_len(src, totlen),
DMA_TO_DEVICE);
return -EINVAL;
}
@@ -229,10 +379,17 @@ static int safexcel_aes_send(struct crypto_async_request *async,
memcpy(ctx->base.ctxr->data, ctx->key, ctx->key_len);
+ if (ctx->aead) {
+ memcpy(ctx->base.ctxr->data + ctx->key_len / sizeof(u32),
+ ctx->ipad, ctx->state_sz);
+ memcpy(ctx->base.ctxr->data + (ctx->key_len + ctx->state_sz) / sizeof(u32),
+ ctx->opad, ctx->state_sz);
+ }
+
spin_lock_bh(&priv->ring[ring].egress_lock);
/* command descriptors */
- for_each_sg(req->src, sg, nr_src, i) {
+ for_each_sg(src, sg, nr_src, i) {
int len = sg_dma_len(sg);
/* Do not overflow the request */
@@ -240,7 +397,7 @@ static int safexcel_aes_send(struct crypto_async_request *async,
len = queued;
cdesc = safexcel_add_cdesc(priv, ring, !n_cdesc, !(queued - len),
- sg_dma_address(sg), len, req->cryptlen,
+ sg_dma_address(sg), len, totlen,
ctx->base.ctxr_dma);
if (IS_ERR(cdesc)) {
/* No space left in the command descriptor ring */
@@ -250,8 +407,14 @@ static int safexcel_aes_send(struct crypto_async_request *async,
n_cdesc++;
if (n_cdesc == 1) {
- safexcel_context_control(ctx, async, cdesc);
- safexcel_cipher_token(ctx, async, cdesc, req->cryptlen);
+ safexcel_context_control(ctx, base, sreq, cdesc);
+ if (ctx->aead)
+ safexcel_aead_token(ctx, iv, cdesc,
+ sreq->direction, cryptlen,
+ assoclen, digestsize);
+ else
+ safexcel_skcipher_token(ctx, iv, cdesc,
+ cryptlen);
}
queued -= len;
@@ -260,7 +423,7 @@ static int safexcel_aes_send(struct crypto_async_request *async,
}
/* result descriptors */
- for_each_sg(req->dst, sg, nr_dst, i) {
+ for_each_sg(dst, sg, nr_dst, i) {
bool first = !i, last = (i == nr_dst - 1);
u32 len = sg_dma_len(sg);
@@ -276,7 +439,7 @@ static int safexcel_aes_send(struct crypto_async_request *async,
spin_unlock_bh(&priv->ring[ring].egress_lock);
- request->req = &req->base;
+ request->req = base;
*commands = n_cdesc;
*results = n_rdesc;
@@ -291,16 +454,16 @@ cdesc_rollback:
spin_unlock_bh(&priv->ring[ring].egress_lock);
- if (req->src == req->dst) {
- dma_unmap_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ if (src == dst) {
+ dma_unmap_sg(priv->dev, src,
+ sg_nents_for_len(src, totlen),
DMA_BIDIRECTIONAL);
} else {
- dma_unmap_sg(priv->dev, req->src,
- sg_nents_for_len(req->src, req->cryptlen),
+ dma_unmap_sg(priv->dev, src,
+ sg_nents_for_len(src, totlen),
DMA_TO_DEVICE);
- dma_unmap_sg(priv->dev, req->dst,
- sg_nents_for_len(req->dst, req->cryptlen),
+ dma_unmap_sg(priv->dev, dst,
+ sg_nents_for_len(dst, totlen),
DMA_FROM_DEVICE);
}
@@ -309,11 +472,10 @@ cdesc_rollback:
static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv,
int ring,
- struct crypto_async_request *async,
+ struct crypto_async_request *base,
bool *should_complete, int *ret)
{
- struct skcipher_request *req = skcipher_request_cast(async);
- struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm);
struct safexcel_result_desc *rdesc;
int ndesc = 0, enq_ret;
@@ -354,7 +516,7 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv,
ctx->base.ring = ring;
spin_lock_bh(&priv->ring[ring].queue_lock);
- enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, async);
+ enq_ret = crypto_enqueue_request(&priv->ring[ring].queue, base);
spin_unlock_bh(&priv->ring[ring].queue_lock);
if (enq_ret != -EINPROGRESS)
@@ -368,9 +530,10 @@ static int safexcel_handle_inv_result(struct safexcel_crypto_priv *priv,
return ndesc;
}
-static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring,
- struct crypto_async_request *async,
- bool *should_complete, int *ret)
+static int safexcel_skcipher_handle_result(struct safexcel_crypto_priv *priv,
+ int ring,
+ struct crypto_async_request *async,
+ bool *should_complete, int *ret)
{
struct skcipher_request *req = skcipher_request_cast(async);
struct safexcel_cipher_req *sreq = skcipher_request_ctx(req);
@@ -381,24 +544,48 @@ static int safexcel_handle_result(struct safexcel_crypto_priv *priv, int ring,
err = safexcel_handle_inv_result(priv, ring, async,
should_complete, ret);
} else {
- err = safexcel_handle_req_result(priv, ring, async,
+ err = safexcel_handle_req_result(priv, ring, async, req->src,
+ req->dst, req->cryptlen, sreq,
should_complete, ret);
}
return err;
}
-static int safexcel_cipher_send_inv(struct crypto_async_request *async,
+static int safexcel_aead_handle_result(struct safexcel_crypto_priv *priv,
+ int ring,
+ struct crypto_async_request *async,
+ bool *should_complete, int *ret)
+{
+ struct aead_request *req = aead_request_cast(async);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct safexcel_cipher_req *sreq = aead_request_ctx(req);
+ int err;
+
+ if (sreq->needs_inv) {
+ sreq->needs_inv = false;
+ err = safexcel_handle_inv_result(priv, ring, async,
+ should_complete, ret);
+ } else {
+ err = safexcel_handle_req_result(priv, ring, async, req->src,
+ req->dst,
+ req->cryptlen + crypto_aead_authsize(tfm),
+ sreq, should_complete, ret);
+ }
+
+ return err;
+}
+
+static int safexcel_cipher_send_inv(struct crypto_async_request *base,
int ring, struct safexcel_request *request,
int *commands, int *results)
{
- struct skcipher_request *req = skcipher_request_cast(async);
- struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
int ret;
- ret = safexcel_invalidate_cache(async, priv,
- ctx->base.ctxr_dma, ring, request);
+ ret = safexcel_invalidate_cache(base, priv, ctx->base.ctxr_dma, ring,
+ request);
if (unlikely(ret))
return ret;
@@ -408,9 +595,9 @@ static int safexcel_cipher_send_inv(struct crypto_async_request *async,
return 0;
}
-static int safexcel_send(struct crypto_async_request *async,
- int ring, struct safexcel_request *request,
- int *commands, int *results)
+static int safexcel_skcipher_send(struct crypto_async_request *async, int ring,
+ struct safexcel_request *request,
+ int *commands, int *results)
{
struct skcipher_request *req = skcipher_request_cast(async);
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
@@ -421,59 +608,108 @@ static int safexcel_send(struct crypto_async_request *async,
BUG_ON(priv->version == EIP97 && sreq->needs_inv);
if (sreq->needs_inv)
- ret = safexcel_cipher_send_inv(async, ring, request,
- commands, results);
+ ret = safexcel_cipher_send_inv(async, ring, request, commands,
+ results);
+ else
+ ret = safexcel_aes_send(async, ring, request, sreq, req->src,
+ req->dst, req->cryptlen, 0, 0, req->iv,
+ commands, results);
+ return ret;
+}
+
+static int safexcel_aead_send(struct crypto_async_request *async, int ring,
+ struct safexcel_request *request, int *commands,
+ int *results)
+{
+ struct aead_request *req = aead_request_cast(async);
+ struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ struct safexcel_cipher_req *sreq = aead_request_ctx(req);
+ struct safexcel_crypto_priv *priv = ctx->priv;
+ int ret;
+
+ BUG_ON(priv->version == EIP97 && sreq->needs_inv);
+
+ if (sreq->needs_inv)
+ ret = safexcel_cipher_send_inv(async, ring, request, commands,
+ results);
else
- ret = safexcel_aes_send(async, ring, request,
+ ret = safexcel_aes_send(async, ring, request, sreq, req->src,
+ req->dst, req->cryptlen, req->assoclen,
+ crypto_aead_authsize(tfm), req->iv,
commands, results);
return ret;
}
-static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm)
+static int safexcel_cipher_exit_inv(struct crypto_tfm *tfm,
+ struct crypto_async_request *base,
+ struct safexcel_cipher_req *sreq,
+ struct safexcel_inv_result *result)
{
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
- SKCIPHER_REQUEST_ON_STACK(req, __crypto_skcipher_cast(tfm));
- struct safexcel_cipher_req *sreq = skcipher_request_ctx(req);
- struct safexcel_inv_result result = {};
int ring = ctx->base.ring;
- memset(req, 0, sizeof(struct skcipher_request));
+ init_completion(&result->completion);
- /* create invalidation request */
- init_completion(&result.completion);
- skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
- safexcel_inv_complete, &result);
-
- skcipher_request_set_tfm(req, __crypto_skcipher_cast(tfm));
- ctx = crypto_tfm_ctx(req->base.tfm);
+ ctx = crypto_tfm_ctx(base->tfm);
ctx->base.exit_inv = true;
sreq->needs_inv = true;
spin_lock_bh(&priv->ring[ring].queue_lock);
- crypto_enqueue_request(&priv->ring[ring].queue, &req->base);
+ crypto_enqueue_request(&priv->ring[ring].queue, base);
spin_unlock_bh(&priv->ring[ring].queue_lock);
queue_work(priv->ring[ring].workqueue,
&priv->ring[ring].work_data.work);
- wait_for_completion(&result.completion);
+ wait_for_completion(&result->completion);
- if (result.error) {
+ if (result->error) {
dev_warn(priv->dev,
"cipher: sync: invalidate: completion error %d\n",
- result.error);
- return result.error;
+ result->error);
+ return result->error;
}
return 0;
}
-static int safexcel_aes(struct skcipher_request *req,
- enum safexcel_cipher_direction dir, u32 mode)
+static int safexcel_skcipher_exit_inv(struct crypto_tfm *tfm)
{
- struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
+ EIP197_REQUEST_ON_STACK(req, skcipher, EIP197_SKCIPHER_REQ_SIZE);
struct safexcel_cipher_req *sreq = skcipher_request_ctx(req);
+ struct safexcel_inv_result result = {};
+
+ memset(req, 0, sizeof(struct skcipher_request));
+
+ skcipher_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ safexcel_inv_complete, &result);
+ skcipher_request_set_tfm(req, __crypto_skcipher_cast(tfm));
+
+ return safexcel_cipher_exit_inv(tfm, &req->base, sreq, &result);
+}
+
+static int safexcel_aead_exit_inv(struct crypto_tfm *tfm)
+{
+ EIP197_REQUEST_ON_STACK(req, aead, EIP197_AEAD_REQ_SIZE);
+ struct safexcel_cipher_req *sreq = aead_request_ctx(req);
+ struct safexcel_inv_result result = {};
+
+ memset(req, 0, sizeof(struct aead_request));
+
+ aead_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG,
+ safexcel_inv_complete, &result);
+ aead_request_set_tfm(req, __crypto_aead_cast(tfm));
+
+ return safexcel_cipher_exit_inv(tfm, &req->base, sreq, &result);
+}
+
+static int safexcel_aes(struct crypto_async_request *base,
+ struct safexcel_cipher_req *sreq,
+ enum safexcel_cipher_direction dir, u32 mode)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm);
struct safexcel_crypto_priv *priv = ctx->priv;
int ret, ring;
@@ -489,7 +725,7 @@ static int safexcel_aes(struct skcipher_request *req,
} else {
ctx->base.ring = safexcel_select_ring(priv);
ctx->base.ctxr = dma_pool_zalloc(priv->context_pool,
- EIP197_GFP_FLAGS(req->base),
+ EIP197_GFP_FLAGS(*base),
&ctx->base.ctxr_dma);
if (!ctx->base.ctxr)
return -ENOMEM;
@@ -498,7 +734,7 @@ static int safexcel_aes(struct skcipher_request *req,
ring = ctx->base.ring;
spin_lock_bh(&priv->ring[ring].queue_lock);
- ret = crypto_enqueue_request(&priv->ring[ring].queue, &req->base);
+ ret = crypto_enqueue_request(&priv->ring[ring].queue, base);
spin_unlock_bh(&priv->ring[ring].queue_lock);
queue_work(priv->ring[ring].workqueue,
@@ -509,14 +745,14 @@ static int safexcel_aes(struct skcipher_request *req,
static int safexcel_ecb_aes_encrypt(struct skcipher_request *req)
{
- return safexcel_aes(req, SAFEXCEL_ENCRYPT,
- CONTEXT_CONTROL_CRYPTO_MODE_ECB);
+ return safexcel_aes(&req->base, skcipher_request_ctx(req),
+ SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB);
}
static int safexcel_ecb_aes_decrypt(struct skcipher_request *req)
{
- return safexcel_aes(req, SAFEXCEL_DECRYPT,
- CONTEXT_CONTROL_CRYPTO_MODE_ECB);
+ return safexcel_aes(&req->base, skcipher_request_ctx(req),
+ SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB);
}
static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm)
@@ -526,34 +762,64 @@ static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm)
container_of(tfm->__crt_alg, struct safexcel_alg_template,
alg.skcipher.base);
- ctx->priv = tmpl->priv;
- ctx->base.send = safexcel_send;
- ctx->base.handle_result = safexcel_handle_result;
-
crypto_skcipher_set_reqsize(__crypto_skcipher_cast(tfm),
sizeof(struct safexcel_cipher_req));
+ ctx->priv = tmpl->priv;
+
+ ctx->base.send = safexcel_skcipher_send;
+ ctx->base.handle_result = safexcel_skcipher_handle_result;
return 0;
}
-static void safexcel_skcipher_cra_exit(struct crypto_tfm *tfm)
+static int safexcel_cipher_cra_exit(struct crypto_tfm *tfm)
{
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
- struct safexcel_crypto_priv *priv = ctx->priv;
- int ret;
- memzero_explicit(ctx->key, 8 * sizeof(u32));
+ memzero_explicit(ctx->key, sizeof(ctx->key));
/* context not allocated, skip invalidation */
if (!ctx->base.ctxr)
+ return -ENOMEM;
+
+ memzero_explicit(ctx->base.ctxr->data, sizeof(ctx->base.ctxr->data));
+ return 0;
+}
+
+static void safexcel_skcipher_cra_exit(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct safexcel_crypto_priv *priv = ctx->priv;
+ int ret;
+
+ if (safexcel_cipher_cra_exit(tfm))
return;
- memzero_explicit(ctx->base.ctxr->data, 8 * sizeof(u32));
+ if (priv->version == EIP197) {
+ ret = safexcel_skcipher_exit_inv(tfm);
+ if (ret)
+ dev_warn(priv->dev, "skcipher: invalidation error %d\n",
+ ret);
+ } else {
+ dma_pool_free(priv->context_pool, ctx->base.ctxr,
+ ctx->base.ctxr_dma);
+ }
+}
+
+static void safexcel_aead_cra_exit(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct safexcel_crypto_priv *priv = ctx->priv;
+ int ret;
+
+ if (safexcel_cipher_cra_exit(tfm))
+ return;
if (priv->version == EIP197) {
- ret = safexcel_cipher_exit_inv(tfm);
+ ret = safexcel_aead_exit_inv(tfm);
if (ret)
- dev_warn(priv->dev, "cipher: invalidation error %d\n", ret);
+ dev_warn(priv->dev, "aead: invalidation error %d\n",
+ ret);
} else {
dma_pool_free(priv->context_pool, ctx->base.ctxr,
ctx->base.ctxr_dma);
@@ -563,7 +829,7 @@ static void safexcel_skcipher_cra_exit(struct crypto_tfm *tfm)
struct safexcel_alg_template safexcel_alg_ecb_aes = {
.type = SAFEXCEL_ALG_TYPE_SKCIPHER,
.alg.skcipher = {
- .setkey = safexcel_aes_setkey,
+ .setkey = safexcel_skcipher_aes_setkey,
.encrypt = safexcel_ecb_aes_encrypt,
.decrypt = safexcel_ecb_aes_decrypt,
.min_keysize = AES_MIN_KEY_SIZE,
@@ -586,20 +852,20 @@ struct safexcel_alg_template safexcel_alg_ecb_aes = {
static int safexcel_cbc_aes_encrypt(struct skcipher_request *req)
{
- return safexcel_aes(req, SAFEXCEL_ENCRYPT,
- CONTEXT_CONTROL_CRYPTO_MODE_CBC);
+ return safexcel_aes(&req->base, skcipher_request_ctx(req),
+ SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC);
}
static int safexcel_cbc_aes_decrypt(struct skcipher_request *req)
{
- return safexcel_aes(req, SAFEXCEL_DECRYPT,
- CONTEXT_CONTROL_CRYPTO_MODE_CBC);
+ return safexcel_aes(&req->base, skcipher_request_ctx(req),
+ SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC);
}
struct safexcel_alg_template safexcel_alg_cbc_aes = {
.type = SAFEXCEL_ALG_TYPE_SKCIPHER,
.alg.skcipher = {
- .setkey = safexcel_aes_setkey,
+ .setkey = safexcel_skcipher_aes_setkey,
.encrypt = safexcel_cbc_aes_encrypt,
.decrypt = safexcel_cbc_aes_decrypt,
.min_keysize = AES_MIN_KEY_SIZE,
@@ -620,3 +886,139 @@ struct safexcel_alg_template safexcel_alg_cbc_aes = {
},
},
};
+
+static int safexcel_aead_encrypt(struct aead_request *req)
+{
+ struct safexcel_cipher_req *creq = aead_request_ctx(req);
+
+ return safexcel_aes(&req->base, creq, SAFEXCEL_ENCRYPT,
+ CONTEXT_CONTROL_CRYPTO_MODE_CBC);
+}
+
+static int safexcel_aead_decrypt(struct aead_request *req)
+{
+ struct safexcel_cipher_req *creq = aead_request_ctx(req);
+
+ return safexcel_aes(&req->base, creq, SAFEXCEL_DECRYPT,
+ CONTEXT_CONTROL_CRYPTO_MODE_CBC);
+}
+
+static int safexcel_aead_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+ struct safexcel_alg_template *tmpl =
+ container_of(tfm->__crt_alg, struct safexcel_alg_template,
+ alg.aead.base);
+
+ crypto_aead_set_reqsize(__crypto_aead_cast(tfm),
+ sizeof(struct safexcel_cipher_req));
+
+ ctx->priv = tmpl->priv;
+
+ ctx->aead = true;
+ ctx->base.send = safexcel_aead_send;
+ ctx->base.handle_result = safexcel_aead_handle_result;
+ return 0;
+}
+
+static int safexcel_aead_sha1_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ safexcel_aead_cra_init(tfm);
+ ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA1;
+ ctx->state_sz = SHA1_DIGEST_SIZE;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_aes = {
+ .type = SAFEXCEL_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .setkey = safexcel_aead_aes_setkey,
+ .encrypt = safexcel_aead_encrypt,
+ .decrypt = safexcel_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA1_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha1),cbc(aes))",
+ .cra_driver_name = "safexcel-authenc-hmac-sha1-cbc-aes",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+ .cra_alignmask = 0,
+ .cra_init = safexcel_aead_sha1_cra_init,
+ .cra_exit = safexcel_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+static int safexcel_aead_sha256_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ safexcel_aead_cra_init(tfm);
+ ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA256;
+ ctx->state_sz = SHA256_DIGEST_SIZE;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes = {
+ .type = SAFEXCEL_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .setkey = safexcel_aead_aes_setkey,
+ .encrypt = safexcel_aead_encrypt,
+ .decrypt = safexcel_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA256_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha256),cbc(aes))",
+ .cra_driver_name = "safexcel-authenc-hmac-sha256-cbc-aes",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+ .cra_alignmask = 0,
+ .cra_init = safexcel_aead_sha256_cra_init,
+ .cra_exit = safexcel_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
+
+static int safexcel_aead_sha224_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ safexcel_aead_cra_init(tfm);
+ ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA224;
+ ctx->state_sz = SHA256_DIGEST_SIZE;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes = {
+ .type = SAFEXCEL_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .setkey = safexcel_aead_aes_setkey,
+ .encrypt = safexcel_aead_encrypt,
+ .decrypt = safexcel_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),cbc(aes))",
+ .cra_driver_name = "safexcel-authenc-hmac-sha224-cbc-aes",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+ .cra_alignmask = 0,
+ .cra_init = safexcel_aead_sha224_cra_init,
+ .cra_exit = safexcel_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};