[PATCH v5 12/18] crypto: sun8i-ce: support hash algorithms

Corentin Labbe
2020-08-21T13:46:58Z

The CE support multiples hash algorithms, this patch adds support for
MD5, SHA1, SHA224, SHA256, SHA384 and SHA512.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/Kconfig | 10 +
drivers/crypto/allwinner/sun8i-ce/Makefile | 1 +
.../crypto/allwinner/sun8i-ce/sun8i-ce-core.c | 229 ++++++++++
.../crypto/allwinner/sun8i-ce/sun8i-ce-hash.c | 411 ++++++++++++++++++
drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h | 58 +++
5 files changed, 709 insertions(+)
create mode 100644 drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c

diff --git a/drivers/crypto/allwinner/Kconfig b/drivers/crypto/allwinner/Kconfig
index b346850a91b9..fa34df7fbf78 100644
--- a/drivers/crypto/allwinner/Kconfig
+++ b/drivers/crypto/allwinner/Kconfig
@@ -78,6 +78,16 @@ config CRYPTO_DEV_SUN8I_CE_DEBUG
This will create /sys/kernel/debug/sun8i-ce/stats for displaying
the number of requests per flow and per algorithm.

+config CRYPTO_DEV_SUN8I_CE_HASH
+ bool "Enable support for hash on sun8i-ce"
+ depends on CRYPTO_DEV_SUN8I_CE
+ select MD5
+ select SHA1
+ select SHA256
+ select SHA512
+ help
+ Say y to enable support for hash algorithms.
+
config CRYPTO_DEV_SUN8I_SS
tristate "Support for Allwinner Security System cryptographic offloader"
select CRYPTO_SKCIPHER
diff --git a/drivers/crypto/allwinner/sun8i-ce/Makefile b/drivers/crypto/allwinner/sun8i-ce/Makefile
index 08b68c3c1ca9..d1b1f0e86c79 100644
--- a/drivers/crypto/allwinner/sun8i-ce/Makefile
+++ b/drivers/crypto/allwinner/sun8i-ce/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_CRYPTO_DEV_SUN8I_CE) += sun8i-ce.o
sun8i-ce-y += sun8i-ce-core.o sun8i-ce-cipher.o
+sun8i-ce-$(CONFIG_CRYPTO_DEV_SUN8I_CE_HASH) += sun8i-ce-hash.o
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
index 688976011f07..3ef5b1079be3 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-core.c
@@ -35,6 +35,9 @@
static const struct ce_variant ce_h3_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ALG_SHA384, CE_ALG_SHA512
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -47,6 +50,9 @@ static const struct ce_variant ce_h3_variant = {
static const struct ce_variant ce_h5_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -59,9 +65,13 @@ static const struct ce_variant ce_h5_variant = {
static const struct ce_variant ce_h6_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ALG_SHA384, CE_ALG_SHA512
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.cipher_t_dlen_in_bytes = true,
+ .hash_t_dlen_in_bits = true,
.ce_clks = {
{ "bus", 0, 200000000 },
{ "mod", 300000000, 0 },
@@ -73,6 +83,9 @@ static const struct ce_variant ce_h6_variant = {
static const struct ce_variant ce_a64_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -85,6 +98,9 @@ static const struct ce_variant ce_a64_variant = {
static const struct ce_variant ce_r40_variant = {
.alg_cipher = { CE_ALG_AES, CE_ALG_DES, CE_ALG_3DES,
},
+ .alg_hash = { CE_ALG_MD5, CE_ALG_SHA1, CE_ALG_SHA224, CE_ALG_SHA256,
+ CE_ID_NOTSUPP, CE_ID_NOTSUPP
+ },
.op_mode = { CE_OP_ECB, CE_OP_CBC
},
.ce_clks = {
@@ -329,6 +345,188 @@ static struct sun8i_ce_alg_template ce_algs[] = {
.decrypt = sun8i_ce_skdecrypt,
}
},
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_HASH
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_MD5,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = MD5_DIGEST_SIZE,
+ .statesize = sizeof(struct md5_state),
+ .base = {
+ .cra_name = "md5",
+ .cra_driver_name = "md5-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = MD5_HMAC_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA1,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA1_DIGEST_SIZE,
+ .statesize = sizeof(struct sha1_state),
+ .base = {
+ .cra_name = "sha1",
+ .cra_driver_name = "sha1-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA224,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA224_DIGEST_SIZE,
+ .statesize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha224",
+ .cra_driver_name = "sha224-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA224_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA256,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA256_DIGEST_SIZE,
+ .statesize = sizeof(struct sha256_state),
+ .base = {
+ .cra_name = "sha256",
+ .cra_driver_name = "sha256-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA256_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA384,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA384_DIGEST_SIZE,
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha384",
+ .cra_driver_name = "sha384-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA384_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+{ .type = CRYPTO_ALG_TYPE_AHASH,
+ .ce_algo_id = CE_ID_HASH_SHA512,
+ .alg.hash = {
+ .init = sun8i_ce_hash_init,
+ .update = sun8i_ce_hash_update,
+ .final = sun8i_ce_hash_final,
+ .finup = sun8i_ce_hash_finup,
+ .digest = sun8i_ce_hash_digest,
+ .export = sun8i_ce_hash_export,
+ .import = sun8i_ce_hash_import,
+ .halg = {
+ .digestsize = SHA512_DIGEST_SIZE,
+ .statesize = sizeof(struct sha512_state),
+ .base = {
+ .cra_name = "sha512",
+ .cra_driver_name = "sha512-sun8i-ce",
+ .cra_priority = 300,
+ .cra_alignmask = 3,
+ .cra_flags = CRYPTO_ALG_TYPE_AHASH |
+ CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK,
+ .cra_blocksize = SHA512_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct sun8i_ce_hash_tfm_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_init = sun8i_ce_hash_crainit,
+ .cra_exit = sun8i_ce_hash_craexit,
+ }
+ }
+ }
+},
+#endif
};

#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
@@ -350,6 +548,12 @@ static int sun8i_ce_dbgfs_read(struct seq_file *seq, void *v)
ce_algs[i].alg.skcipher.base.cra_name,
ce_algs[i].stat_req, ce_algs[i].stat_fb);
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ seq_printf(seq, "%s %s %lu %lu\n",
+ ce_algs[i].alg.hash.halg.base.cra_driver_name,
+ ce_algs[i].alg.hash.halg.base.cra_name,
+ ce_algs[i].stat_req, ce_algs[i].stat_fb);
+ break;
}
}
return 0;
@@ -564,6 +768,26 @@ static int sun8i_ce_register_algs(struct sun8i_ce_dev *ce)
return err;
}
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ id = ce_algs[i].ce_algo_id;
+ ce_method = ce->variant->alg_hash[id];
+ if (ce_method == CE_ID_NOTSUPP) {
+ dev_info(ce->dev,
+ "DEBUG: Algo of %s not supported\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ ce_algs[i].ce = NULL;
+ break;
+ }
+ dev_info(ce->dev, "Register %s\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ err = crypto_register_ahash(&ce_algs[i].alg.hash);
+ if (err) {
+ dev_err(ce->dev, "ERROR: Fail to register %s\n",
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ ce_algs[i].ce = NULL;
+ return err;
+ }
+ break;
default:
ce_algs[i].ce = NULL;
dev_err(ce->dev, "ERROR: tried to register an unknown algo\n");
@@ -585,6 +809,11 @@ static void sun8i_ce_unregister_algs(struct sun8i_ce_dev *ce)
ce_algs[i].alg.skcipher.base.cra_name);
crypto_unregister_skcipher(&ce_algs[i].alg.skcipher);
break;
+ case CRYPTO_ALG_TYPE_AHASH:
+ dev_info(ce->dev, "Unregister %d %s\n", i,
+ ce_algs[i].alg.hash.halg.base.cra_name);
+ crypto_unregister_ahash(&ce_algs[i].alg.hash);
+ break;
}
}
}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
new file mode 100644
index 000000000000..b6a054820e25
--- /dev/null
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce-hash.c
@@ -0,0 +1,411 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * sun8i-ce-hash.c - hardware cryptographic offloader for
+ * Allwinner H3/A64/H5/H2+/H6/R40 SoC
+ *
+ * Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
+ *
+ * This file add support for MD5 and SHA1/SHA224/SHA256/SHA384/SHA512.
+ *
+ * You could find the datasheet in Documentation/arm/sunxi/README
+ */
+#include <linux/pm_runtime.h>
+#include <linux/scatterlist.h>
+#include <crypto/internal/hash.h>
+#include <crypto/sha.h>
+#include <crypto/md5.h>
+#include "sun8i-ce.h"
+
+int sun8i_ce_hash_crainit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_hash_tfm_ctx *op = crypto_tfm_ctx(tfm);
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
+ struct sun8i_ce_alg_template *algt;
+ int err;
+
+ memset(op, 0, sizeof(struct sun8i_ce_hash_tfm_ctx));
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ op->ce = algt->ce;
+
+ op->enginectx.op.do_one_request = sun8i_ce_hash_run;
+ op->enginectx.op.prepare_request = NULL;
+ op->enginectx.op.unprepare_request = NULL;
+
+ /* FALLBACK */
+ op->fallback_tfm = crypto_alloc_ahash(crypto_tfm_alg_name(tfm), 0,
+ CRYPTO_ALG_NEED_FALLBACK);
+ if (IS_ERR(op->fallback_tfm)) {
+ dev_err(algt->ce->dev, "Fallback driver could no be loaded\n");
+ return PTR_ERR(op->fallback_tfm);
+ }
+
+ if (algt->alg.hash.halg.statesize < crypto_ahash_statesize(op->fallback_tfm))
+ algt->alg.hash.halg.statesize = crypto_ahash_statesize(op->fallback_tfm);
+
+ crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
+ sizeof(struct sun8i_ce_hash_reqctx) +
+ crypto_ahash_reqsize(op->fallback_tfm));
+
+ dev_info(op->ce->dev, "Fallback for %s is %s\n",
+ crypto_tfm_alg_driver_name(tfm),
+ crypto_tfm_alg_driver_name(&op->fallback_tfm->base));
+ err = pm_runtime_get_sync(op->ce->dev);
+ if (err < 0)
+ goto error_pm;
+ return 0;
+error_pm:
+ crypto_free_ahash(op->fallback_tfm);
+ return err;
+}
+
+void sun8i_ce_hash_craexit(struct crypto_tfm *tfm)
+{
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_tfm_ctx(tfm);
+
+ crypto_free_ahash(tfmctx->fallback_tfm);
+ pm_runtime_put_sync_suspend(tfmctx->ce->dev);
+}
+
+int sun8i_ce_hash_init(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+
+ memset(rctx, 0, sizeof(struct sun8i_ce_hash_reqctx));
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ return crypto_ahash_init(&rctx->fallback_req);
+}
+
+int sun8i_ce_hash_export(struct ahash_request *areq, void *out)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ return crypto_ahash_export(&rctx->fallback_req, out);
+}
+
+int sun8i_ce_hash_import(struct ahash_request *areq, const void *in)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ return crypto_ahash_import(&rctx->fallback_req, in);
+}
+
+int sun8i_ce_hash_final(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_alg_template *algt;
+#endif
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP;
+ rctx->fallback_req.result = areq->result;
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_final(&rctx->fallback_req);
+}
+
+int sun8i_ce_hash_update(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP;
+ rctx->fallback_req.nbytes = areq->nbytes;
+ rctx->fallback_req.src = areq->src;
+
+ return crypto_ahash_update(&rctx->fallback_req);
+}
+
+int sun8i_ce_hash_finup(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_alg_template *algt;
+#endif
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ rctx->fallback_req.nbytes = areq->nbytes;
+ rctx->fallback_req.src = areq->src;
+ rctx->fallback_req.result = areq->result;
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_finup(&rctx->fallback_req);
+}
+
+static int sun8i_ce_hash_digest_fb(struct ahash_request *areq)
+{
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_alg_template *algt;
+#endif
+
+ ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
+ rctx->fallback_req.base.flags = areq->base.flags &
+ CRYPTO_TFM_REQ_MAY_SLEEP;
+
+ rctx->fallback_req.nbytes = areq->nbytes;
+ rctx->fallback_req.src = areq->src;
+ rctx->fallback_req.result = areq->result;
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ algt->stat_fb++;
+#endif
+
+ return crypto_ahash_digest(&rctx->fallback_req);
+}
+
+static bool sun8i_ce_hash_need_fallback(struct ahash_request *areq)
+{
+ struct scatterlist *sg;
+
+ if (areq->nbytes == 0)
+ return true;
+ /* we need to reserve one SG for padding one */
+ if (sg_nents(areq->src) > MAX_SG - 1)
+ return true;
+ sg = areq->src;
+ while (sg) {
+ if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
+ return true;
+ sg = sg_next(sg);
+ }
+ return false;
+}
+
+int sun8i_ce_hash_digest(struct ahash_request *areq)
+{
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct sun8i_ce_alg_template *algt;
+ struct sun8i_ce_dev *ce;
+ struct crypto_engine *engine;
+ struct scatterlist *sg;
+ int nr_sgs, e, i;
+
+ if (sun8i_ce_hash_need_fallback(areq))
+ return sun8i_ce_hash_digest_fb(areq);
+
+ nr_sgs = sg_nents(areq->src);
+ if (nr_sgs > MAX_SG - 1)
+ return sun8i_ce_hash_digest_fb(areq);
+
+ for_each_sg(areq->src, sg, nr_sgs, i) {
+ if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
+ return sun8i_ce_hash_digest_fb(areq);
+ }
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ ce = algt->ce;
+
+ e = sun8i_ce_get_engine_number(ce);
+ rctx->flow = e;
+ engine = ce->chanlist[e].engine;
+
+ return crypto_transfer_hash_request_to_engine(engine, areq);
+}
+
+int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq)
+{
+ struct ahash_request *areq = container_of(breq, struct ahash_request, base);
+ struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
+ struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
+ struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
+ struct sun8i_ce_alg_template *algt;
+ struct sun8i_ce_dev *ce;
+ struct sun8i_ce_flow *chan;
+ struct ce_task *cet;
+ struct scatterlist *sg;
+ int nr_sgs, flow, err;
+ unsigned int len;
+ u32 common;
+ u64 byte_count;
+ __le32 *bf;
+ void *buf;
+ int j, i, todo;
+ int nbw = 0;
+ u64 fill, min_fill;
+ __be64 *bebits;
+ __le64 *lebits;
+ void *result;
+ u64 bs;
+ int digestsize;
+ dma_addr_t addr_res, addr_pad;
+
+ algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
+ ce = algt->ce;
+
+ bs = algt->alg.hash.halg.base.cra_blocksize;
+ digestsize = algt->alg.hash.halg.digestsize;
+ if (digestsize == SHA224_DIGEST_SIZE)
+ digestsize = SHA256_DIGEST_SIZE;
+ if (digestsize == SHA384_DIGEST_SIZE)
+ digestsize = SHA512_DIGEST_SIZE;
+
+ /* the padding could be up to two block. */
+ buf = kzalloc(bs * 2, GFP_KERNEL | GFP_DMA);
+ if (!buf)
+ return -ENOMEM;
+ bf = (__le32 *)buf;
+
+ result = kzalloc(digestsize, GFP_KERNEL | GFP_DMA);
+ if (!result)
+ return -ENOMEM;
+
+ flow = rctx->flow;
+ chan = &ce->chanlist[flow];
+
+#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
+ algt->stat_req++;
+#endif
+ dev_dbg(ce->dev, "%s %s len=%d\n", __func__, crypto_tfm_alg_name(areq->base.tfm), areq->nbytes);
+
+ cet = chan->tl;
+ memset(cet, 0, sizeof(struct ce_task));
+
+ cet->t_id = cpu_to_le32(flow);
+ common = ce->variant->alg_hash[algt->ce_algo_id];
+ common |= CE_COMM_INT;
+ cet->t_common_ctl = cpu_to_le32(common);
+
+ cet->t_sym_ctl = 0;
+ cet->t_asym_ctl = 0;
+
+ nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
+ if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
+ dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
+ err = -EINVAL;
+ goto theend;
+ }
+
+ len = areq->nbytes;
+ for_each_sg(areq->src, sg, nr_sgs, i) {
+ cet->t_src[i].addr = cpu_to_le32(sg_dma_address(sg));
+ todo = min(len, sg_dma_len(sg));
+ cet->t_src[i].len = cpu_to_le32(todo / 4);
+ len -= todo;
+ }
+ if (len > 0) {
+ dev_err(ce->dev, "remaining len %d\n", len);
+ err = -EINVAL;
+ goto theend;
+ }
+ addr_res = dma_map_single(ce->dev, result, digestsize, DMA_FROM_DEVICE);
+ cet->t_dst[0].addr = cpu_to_le32(addr_res);
+ cet->t_dst[0].len = cpu_to_le32(digestsize / 4);
+ if (dma_mapping_error(ce->dev, addr_res)) {
+ dev_err(ce->dev, "DMA map dest\n");
+ err = -EINVAL;
+ goto theend;
+ }
+
+ byte_count = areq->nbytes;
+ j = 0;
+ bf[j++] = cpu_to_le32(0x80);
+
+ if (bs == 64) {
+ fill = 64 - (byte_count % 64);
+ min_fill = 2 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
+ } else {
+ fill = 128 - (byte_count % 128);
+ min_fill = 4 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
+ }
+
+ if (fill < min_fill)
+ fill += bs;
+
+ j += (fill - min_fill) / sizeof(u32);
+
+ switch (algt->ce_algo_id) {
+ case CE_ID_HASH_MD5:
+ lebits = (__le64 *)&bf[j];
+ *lebits = cpu_to_le64(byte_count << 3);
+ j += 2;
+ break;
+ case CE_ID_HASH_SHA1:
+ case CE_ID_HASH_SHA224:
+ case CE_ID_HASH_SHA256:
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count << 3);
+ j += 2;
+ break;
+ case CE_ID_HASH_SHA384:
+ case CE_ID_HASH_SHA512:
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count >> 61);
+ j += 2;
+ bebits = (__be64 *)&bf[j];
+ *bebits = cpu_to_be64(byte_count << 3);
+ j += 2;
+ break;
+ }
+
+ addr_pad = dma_map_single(ce->dev, buf, j * 4, DMA_TO_DEVICE);
+ cet->t_src[i].addr = cpu_to_le32(addr_pad);
+ cet->t_src[i].len = cpu_to_le32(j);
+ if (dma_mapping_error(ce->dev, addr_pad)) {
+ dev_err(ce->dev, "DMA error on padding SG\n");
+ err = -EINVAL;
+ goto theend;
+ }
+
+ if (ce->variant->hash_t_dlen_in_bits)
+ cet->t_dlen = cpu_to_le32((areq->nbytes + j * 4) * 8);
+ else
+ cet->t_dlen = cpu_to_le32(areq->nbytes / 4 + j);
+
+ chan->timeout = areq->nbytes;
+
+ err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(areq->base.tfm));
+
+ dma_unmap_single(ce->dev, addr_pad, j * 4, DMA_TO_DEVICE);
+ dma_unmap_sg(ce->dev, areq->src, nr_sgs, DMA_TO_DEVICE);
+ dma_unmap_single(ce->dev, addr_res, digestsize, DMA_FROM_DEVICE);
+
+ kfree(buf);
+
+ memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
+ kfree(result);
+theend:
+ crypto_finalize_hash_request(engine, breq, err);
+ return 0;
+}
diff --git a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
index 3dbf8ca47b7c..6bbafdf9d40c 100644
--- a/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
+++ b/drivers/crypto/allwinner/sun8i-ce/sun8i-ce.h
@@ -12,6 +12,9 @@
#include <linux/atomic.h>
#include <linux/debugfs.h>
#include <linux/crypto.h>
+#include <crypto/internal/hash.h>
+#include <crypto/md5.h>
+#include <crypto/sha.h>

/* CE Registers */
#define CE_TDQ 0x00
@@ -45,6 +48,12 @@
#define CE_ALG_AES 0
#define CE_ALG_DES 1
#define CE_ALG_3DES 2
+#define CE_ALG_MD5 16
+#define CE_ALG_SHA1 17
+#define CE_ALG_SHA224 18
+#define CE_ALG_SHA256 19
+#define CE_ALG_SHA384 20
+#define CE_ALG_SHA512 21

/* Used in ce_variant */
#define CE_ID_NOTSUPP 0xFF
@@ -54,6 +63,14 @@
#define CE_ID_CIPHER_DES3 2
#define CE_ID_CIPHER_MAX 3

+#define CE_ID_HASH_MD5 0
+#define CE_ID_HASH_SHA1 1
+#define CE_ID_HASH_SHA224 2
+#define CE_ID_HASH_SHA256 3
+#define CE_ID_HASH_SHA384 4
+#define CE_ID_HASH_SHA512 5
+#define CE_ID_HASH_MAX 6
+
#define CE_ID_OP_ECB 0
#define CE_ID_OP_CBC 1
#define CE_ID_OP_MAX 2
@@ -96,16 +113,22 @@ struct ce_clock {
* struct ce_variant - Describe CE capability for each variant hardware
* @alg_cipher: list of supported ciphers. for each CE_ID_ this will give the
* coresponding CE_ALG_XXX value
+ * @alg_hash: list of supported hashes. for each CE_ID_ this will give the
+ * corresponding CE_ALG_XXX value
* @op_mode: list of supported block modes
* @cipher_t_dlen_in_bytes: Does the request size for cipher is in
* bytes or words
+ * @hash_t_dlen_in_bytes: Does the request size for hash is in
+ * bits or words
* @ce_clks: list of clocks needed by this variant
* @esr: The type of error register
*/
struct ce_variant {
char alg_cipher[CE_ID_CIPHER_MAX];
+ char alg_hash[CE_ID_HASH_MAX];
u32 op_mode[CE_ID_OP_MAX];
bool cipher_t_dlen_in_bytes;
+ bool hash_t_dlen_in_bits;
struct ce_clock ce_clks[CE_MAX_CLOCKS];
int esr;
};
@@ -221,6 +244,28 @@ struct sun8i_cipher_tfm_ctx {
struct crypto_skcipher *fallback_tfm;
};

+/*
+ * struct sun8i_ce_hash_tfm_ctx - context for an ahash TFM
+ * @enginectx: crypto_engine used by this TFM
+ * @ce: pointer to the private data of driver handling this TFM
+ * @fallback_tfm: pointer to the fallback TFM
+ */
+struct sun8i_ce_hash_tfm_ctx {
+ struct crypto_engine_ctx enginectx;
+ struct sun8i_ce_dev *ce;
+ struct crypto_ahash *fallback_tfm;
+};
+
+/*
+ * struct sun8i_ce_hash_reqctx - context for an ahash request
+ * @fallback_req: pre-allocated fallback request
+ * @flow: the flow to use for this request
+ */
+struct sun8i_ce_hash_reqctx {
+ struct ahash_request fallback_req;
+ int flow;
+};
+
/*
* struct sun8i_ce_alg_template - crypto_alg template
* @type: the CRYPTO_ALG_TYPE for this template
@@ -239,6 +284,7 @@ struct sun8i_ce_alg_template {
struct sun8i_ce_dev *ce;
union {
struct skcipher_alg skcipher;
+ struct ahash_alg hash;
} alg;
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
unsigned long stat_req;
@@ -260,3 +306,15 @@ int sun8i_ce_skencrypt(struct skcipher_request *areq);
int sun8i_ce_get_engine_number(struct sun8i_ce_dev *ce);

int sun8i_ce_run_task(struct sun8i_ce_dev *ce, int flow, const char *name);
+
+int sun8i_ce_hash_crainit(struct crypto_tfm *tfm);
+void sun8i_ce_hash_craexit(struct crypto_tfm *tfm);
+int sun8i_ce_hash_init(struct ahash_request *areq);
+int sun8i_ce_hash_export(struct ahash_request *areq, void *out);
+int sun8i_ce_hash_import(struct ahash_request *areq, const void *in);
+int sun8i_ce_hash(struct ahash_request *areq);
+int sun8i_ce_hash_final(struct ahash_request *areq);
+int sun8i_ce_hash_update(struct ahash_request *areq);
+int sun8i_ce_hash_finup(struct ahash_request *areq);
+int sun8i_ce_hash_digest(struct ahash_request *areq);
+int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq);
--
2.26.2