[PATCH 2/2] crypto: talitos - Fix ctr(aes) on SEC1

[Christophe Leroy]

While ctr(aes) requires the use of a special descriptor on SEC2 (see
commit 70d355ccea89 ("crypto: talitos - fix ctr-aes-talitos")), that
special descriptor doesn't work on SEC1, see commit e738c5f15562
("powerpc/8xx: Add DT node for using the SEC engine of the MPC885").

However, the common nonsnoop descriptor works properly on SEC1 for
ctr(aes).

Add a second template for ctr(aes) that will be registered
only on SEC1.

Fixes: 70d355ccea89 ("crypto: talitos - fix ctr-aes-talitos")
Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
---
 drivers/crypto/talitos.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index b656983c1ef4..25c9f825b8b5 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -2765,6 +2765,22 @@ static struct talitos_alg_template driver_algs[] = {
                                     DESC_HDR_SEL0_AESU |
                                     DESC_HDR_MODE0_AESU_CTR,
        },
+       {       .type = CRYPTO_ALG_TYPE_SKCIPHER,
+               .alg.skcipher = {
+                       .base.cra_name = "ctr(aes)",
+                       .base.cra_driver_name = "ctr-aes-talitos",
+                       .base.cra_blocksize = 1,
+                       .base.cra_flags = CRYPTO_ALG_ASYNC |
+                                         CRYPTO_ALG_ALLOCATES_MEMORY,
+                       .min_keysize = AES_MIN_KEY_SIZE,
+                       .max_keysize = AES_MAX_KEY_SIZE,
+                       .ivsize = AES_BLOCK_SIZE,
+                       .setkey = skcipher_aes_setkey,
+               },
+               .desc_hdr_template = DESC_HDR_TYPE_COMMON_NONSNOOP_NO_AFEU |
+                                    DESC_HDR_SEL0_AESU |
+                                    DESC_HDR_MODE0_AESU_CTR,
+       },
        {       .type = CRYPTO_ALG_TYPE_SKCIPHER,
                .alg.skcipher = {
                        .base.cra_name = "ecb(des)",
@@ -3182,6 +3198,12 @@ static struct talitos_crypto_alg 
*talitos_alg_alloc(struct device *dev,
                        t_alg->algt.alg.skcipher.setkey ?: skcipher_setkey;
                t_alg->algt.alg.skcipher.encrypt = skcipher_encrypt;
                t_alg->algt.alg.skcipher.decrypt = skcipher_decrypt;
+               if (!strcmp(alg->cra_name, "ctr(aes)") && !has_ftr_sec1(priv) &&
+                   DESC_TYPE(t_alg->algt.desc_hdr_template) !=
+                   DESC_TYPE(DESC_HDR_TYPE_AESU_CTR_NONSNOOP)) {
+                       devm_kfree(dev, t_alg);
+                       return ERR_PTR(-ENOTSUPP);
+               }
                break;
        case CRYPTO_ALG_TYPE_AEAD:
                alg = &t_alg->algt.alg.aead.base;
-- 
2.25.0