common.o \
dma.o \
sha.o \
- ablkcipher.o
+ skcipher.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/device.h>
-#include <linux/interrupt.h>
-#include <linux/types.h>
-#include <crypto/aes.h>
-#include <crypto/internal/des.h>
-#include <crypto/internal/skcipher.h>
-
-#include "cipher.h"
-
-static LIST_HEAD(ablkcipher_algs);
-
-static void qce_ablkcipher_done(void *data)
-{
- struct crypto_async_request *async_req = data;
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
- struct qce_device *qce = tmpl->qce;
- enum dma_data_direction dir_src, dir_dst;
- u32 status;
- int error;
- bool diff_dst;
-
- diff_dst = (req->src != req->dst) ? true : false;
- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
-
- error = qce_dma_terminate_all(&qce->dma);
- if (error)
- dev_dbg(qce->dev, "ablkcipher dma termination error (%d)\n",
- error);
-
- if (diff_dst)
- dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
-
- sg_free_table(&rctx->dst_tbl);
-
- error = qce_check_status(qce, &status);
- if (error < 0)
- dev_dbg(qce->dev, "ablkcipher operation error (%x)\n", status);
-
- qce->async_req_done(tmpl->qce, error);
-}
-
-static int
-qce_ablkcipher_async_req_handle(struct crypto_async_request *async_req)
-{
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
- struct crypto_ablkcipher *ablkcipher = crypto_ablkcipher_reqtfm(req);
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
- struct qce_device *qce = tmpl->qce;
- enum dma_data_direction dir_src, dir_dst;
- struct scatterlist *sg;
- bool diff_dst;
- gfp_t gfp;
- int ret;
-
- rctx->iv = req->info;
- rctx->ivsize = crypto_ablkcipher_ivsize(ablkcipher);
- rctx->cryptlen = req->nbytes;
-
- diff_dst = (req->src != req->dst) ? true : false;
- dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
- dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
-
- rctx->src_nents = sg_nents_for_len(req->src, req->nbytes);
- if (diff_dst)
- rctx->dst_nents = sg_nents_for_len(req->dst, req->nbytes);
- else
- rctx->dst_nents = rctx->src_nents;
- if (rctx->src_nents < 0) {
- dev_err(qce->dev, "Invalid numbers of src SG.\n");
- return rctx->src_nents;
- }
- if (rctx->dst_nents < 0) {
- dev_err(qce->dev, "Invalid numbers of dst SG.\n");
- return -rctx->dst_nents;
- }
-
- rctx->dst_nents += 1;
-
- gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
- GFP_KERNEL : GFP_ATOMIC;
-
- ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
- if (ret)
- return ret;
-
- sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
-
- sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
- if (IS_ERR(sg)) {
- ret = PTR_ERR(sg);
- goto error_free;
- }
-
- sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
- if (IS_ERR(sg)) {
- ret = PTR_ERR(sg);
- goto error_free;
- }
-
- sg_mark_end(sg);
- rctx->dst_sg = rctx->dst_tbl.sgl;
-
- ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
- if (ret < 0)
- goto error_free;
-
- if (diff_dst) {
- ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
- if (ret < 0)
- goto error_unmap_dst;
- rctx->src_sg = req->src;
- } else {
- rctx->src_sg = rctx->dst_sg;
- }
-
- ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
- rctx->dst_sg, rctx->dst_nents,
- qce_ablkcipher_done, async_req);
- if (ret)
- goto error_unmap_src;
-
- qce_dma_issue_pending(&qce->dma);
-
- ret = qce_start(async_req, tmpl->crypto_alg_type, req->nbytes, 0);
- if (ret)
- goto error_terminate;
-
- return 0;
-
-error_terminate:
- qce_dma_terminate_all(&qce->dma);
-error_unmap_src:
- if (diff_dst)
- dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
-error_unmap_dst:
- dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
-error_free:
- sg_free_table(&rctx->dst_tbl);
- return ret;
-}
-
-static int qce_ablkcipher_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
- unsigned int keylen)
-{
- struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk);
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
- int ret;
-
- if (!key || !keylen)
- return -EINVAL;
-
- switch (keylen) {
- case AES_KEYSIZE_128:
- case AES_KEYSIZE_256:
- break;
- default:
- goto fallback;
- }
-
- ctx->enc_keylen = keylen;
- memcpy(ctx->enc_key, key, keylen);
- return 0;
-fallback:
- ret = crypto_sync_skcipher_setkey(ctx->fallback, key, keylen);
- if (!ret)
- ctx->enc_keylen = keylen;
- return ret;
-}
-
-static int qce_des_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
- unsigned int keylen)
-{
- struct qce_cipher_ctx *ctx = crypto_ablkcipher_ctx(ablk);
- int err;
-
- err = verify_ablkcipher_des_key(ablk, key);
- if (err)
- return err;
-
- ctx->enc_keylen = keylen;
- memcpy(ctx->enc_key, key, keylen);
- return 0;
-}
-
-static int qce_des3_setkey(struct crypto_ablkcipher *ablk, const u8 *key,
- unsigned int keylen)
-{
- struct qce_cipher_ctx *ctx = crypto_ablkcipher_ctx(ablk);
- int err;
-
- err = verify_ablkcipher_des3_key(ablk, key);
- if (err)
- return err;
-
- ctx->enc_keylen = keylen;
- memcpy(ctx->enc_key, key, keylen);
- return 0;
-}
-
-static int qce_ablkcipher_crypt(struct ablkcipher_request *req, int encrypt)
-{
- struct crypto_tfm *tfm =
- crypto_ablkcipher_tfm(crypto_ablkcipher_reqtfm(req));
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
- struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
- int ret;
-
- rctx->flags = tmpl->alg_flags;
- rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
-
- if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
- ctx->enc_keylen != AES_KEYSIZE_256) {
- SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
-
- skcipher_request_set_sync_tfm(subreq, ctx->fallback);
- skcipher_request_set_callback(subreq, req->base.flags,
- NULL, NULL);
- skcipher_request_set_crypt(subreq, req->src, req->dst,
- req->nbytes, req->info);
- ret = encrypt ? crypto_skcipher_encrypt(subreq) :
- crypto_skcipher_decrypt(subreq);
- skcipher_request_zero(subreq);
- return ret;
- }
-
- return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
-}
-
-static int qce_ablkcipher_encrypt(struct ablkcipher_request *req)
-{
- return qce_ablkcipher_crypt(req, 1);
-}
-
-static int qce_ablkcipher_decrypt(struct ablkcipher_request *req)
-{
- return qce_ablkcipher_crypt(req, 0);
-}
-
-static int qce_ablkcipher_init(struct crypto_tfm *tfm)
-{
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
-
- memset(ctx, 0, sizeof(*ctx));
- tfm->crt_ablkcipher.reqsize = sizeof(struct qce_cipher_reqctx);
-
- ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(tfm),
- 0, CRYPTO_ALG_NEED_FALLBACK);
- return PTR_ERR_OR_ZERO(ctx->fallback);
-}
-
-static void qce_ablkcipher_exit(struct crypto_tfm *tfm)
-{
- struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
-
- crypto_free_sync_skcipher(ctx->fallback);
-}
-
-struct qce_ablkcipher_def {
- unsigned long flags;
- const char *name;
- const char *drv_name;
- unsigned int blocksize;
- unsigned int ivsize;
- unsigned int min_keysize;
- unsigned int max_keysize;
-};
-
-static const struct qce_ablkcipher_def ablkcipher_def[] = {
- {
- .flags = QCE_ALG_AES | QCE_MODE_ECB,
- .name = "ecb(aes)",
- .drv_name = "ecb-aes-qce",
- .blocksize = AES_BLOCK_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_AES | QCE_MODE_CBC,
- .name = "cbc(aes)",
- .drv_name = "cbc-aes-qce",
- .blocksize = AES_BLOCK_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_AES | QCE_MODE_CTR,
- .name = "ctr(aes)",
- .drv_name = "ctr-aes-qce",
- .blocksize = AES_BLOCK_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_AES | QCE_MODE_XTS,
- .name = "xts(aes)",
- .drv_name = "xts-aes-qce",
- .blocksize = AES_BLOCK_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_DES | QCE_MODE_ECB,
- .name = "ecb(des)",
- .drv_name = "ecb-des-qce",
- .blocksize = DES_BLOCK_SIZE,
- .ivsize = 0,
- .min_keysize = DES_KEY_SIZE,
- .max_keysize = DES_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_DES | QCE_MODE_CBC,
- .name = "cbc(des)",
- .drv_name = "cbc-des-qce",
- .blocksize = DES_BLOCK_SIZE,
- .ivsize = DES_BLOCK_SIZE,
- .min_keysize = DES_KEY_SIZE,
- .max_keysize = DES_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_3DES | QCE_MODE_ECB,
- .name = "ecb(des3_ede)",
- .drv_name = "ecb-3des-qce",
- .blocksize = DES3_EDE_BLOCK_SIZE,
- .ivsize = 0,
- .min_keysize = DES3_EDE_KEY_SIZE,
- .max_keysize = DES3_EDE_KEY_SIZE,
- },
- {
- .flags = QCE_ALG_3DES | QCE_MODE_CBC,
- .name = "cbc(des3_ede)",
- .drv_name = "cbc-3des-qce",
- .blocksize = DES3_EDE_BLOCK_SIZE,
- .ivsize = DES3_EDE_BLOCK_SIZE,
- .min_keysize = DES3_EDE_KEY_SIZE,
- .max_keysize = DES3_EDE_KEY_SIZE,
- },
-};
-
-static int qce_ablkcipher_register_one(const struct qce_ablkcipher_def *def,
- struct qce_device *qce)
-{
- struct qce_alg_template *tmpl;
- struct crypto_alg *alg;
- int ret;
-
- tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
- if (!tmpl)
- return -ENOMEM;
-
- alg = &tmpl->alg.crypto;
-
- snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
- snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
- def->drv_name);
-
- alg->cra_blocksize = def->blocksize;
- alg->cra_ablkcipher.ivsize = def->ivsize;
- alg->cra_ablkcipher.min_keysize = def->min_keysize;
- alg->cra_ablkcipher.max_keysize = def->max_keysize;
- alg->cra_ablkcipher.setkey = IS_3DES(def->flags) ? qce_des3_setkey :
- IS_DES(def->flags) ? qce_des_setkey :
- qce_ablkcipher_setkey;
- alg->cra_ablkcipher.encrypt = qce_ablkcipher_encrypt;
- alg->cra_ablkcipher.decrypt = qce_ablkcipher_decrypt;
-
- alg->cra_priority = 300;
- alg->cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC |
- CRYPTO_ALG_NEED_FALLBACK | CRYPTO_ALG_KERN_DRIVER_ONLY;
- alg->cra_ctxsize = sizeof(struct qce_cipher_ctx);
- alg->cra_alignmask = 0;
- alg->cra_type = &crypto_ablkcipher_type;
- alg->cra_module = THIS_MODULE;
- alg->cra_init = qce_ablkcipher_init;
- alg->cra_exit = qce_ablkcipher_exit;
-
- INIT_LIST_HEAD(&tmpl->entry);
- tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_ABLKCIPHER;
- tmpl->alg_flags = def->flags;
- tmpl->qce = qce;
-
- ret = crypto_register_alg(alg);
- if (ret) {
- kfree(tmpl);
- dev_err(qce->dev, "%s registration failed\n", alg->cra_name);
- return ret;
- }
-
- list_add_tail(&tmpl->entry, &ablkcipher_algs);
- dev_dbg(qce->dev, "%s is registered\n", alg->cra_name);
- return 0;
-}
-
-static void qce_ablkcipher_unregister(struct qce_device *qce)
-{
- struct qce_alg_template *tmpl, *n;
-
- list_for_each_entry_safe(tmpl, n, &ablkcipher_algs, entry) {
- crypto_unregister_alg(&tmpl->alg.crypto);
- list_del(&tmpl->entry);
- kfree(tmpl);
- }
-}
-
-static int qce_ablkcipher_register(struct qce_device *qce)
-{
- int ret, i;
-
- for (i = 0; i < ARRAY_SIZE(ablkcipher_def); i++) {
- ret = qce_ablkcipher_register_one(&ablkcipher_def[i], qce);
- if (ret)
- goto err;
- }
-
- return 0;
-err:
- qce_ablkcipher_unregister(qce);
- return ret;
-}
-
-const struct qce_algo_ops ablkcipher_ops = {
- .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
- .register_algs = qce_ablkcipher_register,
- .unregister_algs = qce_ablkcipher_unregister,
- .async_req_handle = qce_ablkcipher_async_req_handle,
-};
unsigned int cryptlen;
};
-static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_tfm *tfm)
+static inline struct qce_alg_template *to_cipher_tmpl(struct crypto_skcipher *tfm)
{
- struct crypto_alg *alg = tfm->__crt_alg;
- return container_of(alg, struct qce_alg_template, alg.crypto);
+ struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
+ return container_of(alg, struct qce_alg_template, alg.skcipher);
}
-extern const struct qce_algo_ops ablkcipher_ops;
+extern const struct qce_algo_ops skcipher_ops;
#endif /* _CIPHER_H_ */
return 0;
}
-static int qce_setup_regs_ablkcipher(struct crypto_async_request *async_req,
+static int qce_setup_regs_skcipher(struct crypto_async_request *async_req,
u32 totallen, u32 offset)
{
- struct ablkcipher_request *req = ablkcipher_request_cast(async_req);
- struct qce_cipher_reqctx *rctx = ablkcipher_request_ctx(req);
+ struct skcipher_request *req = skcipher_request_cast(async_req);
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
struct qce_cipher_ctx *ctx = crypto_tfm_ctx(async_req->tfm);
- struct qce_alg_template *tmpl = to_cipher_tmpl(async_req->tfm);
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
struct qce_device *qce = tmpl->qce;
__be32 enckey[QCE_MAX_CIPHER_KEY_SIZE / sizeof(__be32)] = {0};
__be32 enciv[QCE_MAX_IV_SIZE / sizeof(__be32)] = {0};
u32 offset)
{
switch (type) {
- case CRYPTO_ALG_TYPE_ABLKCIPHER:
- return qce_setup_regs_ablkcipher(async_req, totallen, offset);
+ case CRYPTO_ALG_TYPE_SKCIPHER:
+ return qce_setup_regs_skcipher(async_req, totallen, offset);
case CRYPTO_ALG_TYPE_AHASH:
return qce_setup_regs_ahash(async_req, totallen, offset);
default:
#include <linux/types.h>
#include <crypto/aes.h>
#include <crypto/hash.h>
+#include <crypto/internal/skcipher.h>
/* key size in bytes */
#define QCE_SHA_HMAC_KEY_SIZE 64
unsigned long alg_flags;
const u32 *std_iv;
union {
- struct crypto_alg crypto;
+ struct skcipher_alg skcipher;
struct ahash_alg ahash;
} alg;
struct qce_device *qce;
#define QCE_QUEUE_LENGTH 1
static const struct qce_algo_ops *qce_ops[] = {
- &ablkcipher_ops,
+ &skcipher_ops,
&ahash_ops,
};
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <crypto/aes.h>
+#include <crypto/internal/des.h>
+#include <crypto/internal/skcipher.h>
+
+#include "cipher.h"
+
+static LIST_HEAD(skcipher_algs);
+
+static void qce_skcipher_done(void *data)
+{
+ struct crypto_async_request *async_req = data;
+ struct skcipher_request *req = skcipher_request_cast(async_req);
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
+ struct qce_device *qce = tmpl->qce;
+ enum dma_data_direction dir_src, dir_dst;
+ u32 status;
+ int error;
+ bool diff_dst;
+
+ diff_dst = (req->src != req->dst) ? true : false;
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
+
+ error = qce_dma_terminate_all(&qce->dma);
+ if (error)
+ dev_dbg(qce->dev, "skcipher dma termination error (%d)\n",
+ error);
+
+ if (diff_dst)
+ dma_unmap_sg(qce->dev, rctx->src_sg, rctx->src_nents, dir_src);
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
+
+ sg_free_table(&rctx->dst_tbl);
+
+ error = qce_check_status(qce, &status);
+ if (error < 0)
+ dev_dbg(qce->dev, "skcipher operation error (%x)\n", status);
+
+ qce->async_req_done(tmpl->qce, error);
+}
+
+static int
+qce_skcipher_async_req_handle(struct crypto_async_request *async_req)
+{
+ struct skcipher_request *req = skcipher_request_cast(async_req);
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req);
+ struct qce_alg_template *tmpl = to_cipher_tmpl(crypto_skcipher_reqtfm(req));
+ struct qce_device *qce = tmpl->qce;
+ enum dma_data_direction dir_src, dir_dst;
+ struct scatterlist *sg;
+ bool diff_dst;
+ gfp_t gfp;
+ int ret;
+
+ rctx->iv = req->iv;
+ rctx->ivsize = crypto_skcipher_ivsize(skcipher);
+ rctx->cryptlen = req->cryptlen;
+
+ diff_dst = (req->src != req->dst) ? true : false;
+ dir_src = diff_dst ? DMA_TO_DEVICE : DMA_BIDIRECTIONAL;
+ dir_dst = diff_dst ? DMA_FROM_DEVICE : DMA_BIDIRECTIONAL;
+
+ rctx->src_nents = sg_nents_for_len(req->src, req->cryptlen);
+ if (diff_dst)
+ rctx->dst_nents = sg_nents_for_len(req->dst, req->cryptlen);
+ else
+ rctx->dst_nents = rctx->src_nents;
+ if (rctx->src_nents < 0) {
+ dev_err(qce->dev, "Invalid numbers of src SG.\n");
+ return rctx->src_nents;
+ }
+ if (rctx->dst_nents < 0) {
+ dev_err(qce->dev, "Invalid numbers of dst SG.\n");
+ return -rctx->dst_nents;
+ }
+
+ rctx->dst_nents += 1;
+
+ gfp = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+ GFP_KERNEL : GFP_ATOMIC;
+
+ ret = sg_alloc_table(&rctx->dst_tbl, rctx->dst_nents, gfp);
+ if (ret)
+ return ret;
+
+ sg_init_one(&rctx->result_sg, qce->dma.result_buf, QCE_RESULT_BUF_SZ);
+
+ sg = qce_sgtable_add(&rctx->dst_tbl, req->dst);
+ if (IS_ERR(sg)) {
+ ret = PTR_ERR(sg);
+ goto error_free;
+ }
+
+ sg = qce_sgtable_add(&rctx->dst_tbl, &rctx->result_sg);
+ if (IS_ERR(sg)) {
+ ret = PTR_ERR(sg);
+ goto error_free;
+ }
+
+ sg_mark_end(sg);
+ rctx->dst_sg = rctx->dst_tbl.sgl;
+
+ ret = dma_map_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
+ if (ret < 0)
+ goto error_free;
+
+ if (diff_dst) {
+ ret = dma_map_sg(qce->dev, req->src, rctx->src_nents, dir_src);
+ if (ret < 0)
+ goto error_unmap_dst;
+ rctx->src_sg = req->src;
+ } else {
+ rctx->src_sg = rctx->dst_sg;
+ }
+
+ ret = qce_dma_prep_sgs(&qce->dma, rctx->src_sg, rctx->src_nents,
+ rctx->dst_sg, rctx->dst_nents,
+ qce_skcipher_done, async_req);
+ if (ret)
+ goto error_unmap_src;
+
+ qce_dma_issue_pending(&qce->dma);
+
+ ret = qce_start(async_req, tmpl->crypto_alg_type, req->cryptlen, 0);
+ if (ret)
+ goto error_terminate;
+
+ return 0;
+
+error_terminate:
+ qce_dma_terminate_all(&qce->dma);
+error_unmap_src:
+ if (diff_dst)
+ dma_unmap_sg(qce->dev, req->src, rctx->src_nents, dir_src);
+error_unmap_dst:
+ dma_unmap_sg(qce->dev, rctx->dst_sg, rctx->dst_nents, dir_dst);
+error_free:
+ sg_free_table(&rctx->dst_tbl);
+ return ret;
+}
+
+static int qce_skcipher_setkey(struct crypto_skcipher *ablk, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_skcipher_tfm(ablk);
+ struct qce_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+ int ret;
+
+ if (!key || !keylen)
+ return -EINVAL;
+
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ case AES_KEYSIZE_256:
+ break;
+ default:
+ goto fallback;
+ }
+
+ ctx->enc_keylen = keylen;
+ memcpy(ctx->enc_key, key, keylen);
+ return 0;
+fallback:
+ ret = crypto_sync_skcipher_setkey(ctx->fallback, key, keylen);
+ if (!ret)
+ ctx->enc_keylen = keylen;
+ return ret;
+}
+
+static int qce_des_setkey(struct crypto_skcipher *ablk, const u8 *key,
+ unsigned int keylen)
+{
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(ablk);
+ int err;
+
+ err = verify_skcipher_des_key(ablk, key);
+ if (err)
+ return err;
+
+ ctx->enc_keylen = keylen;
+ memcpy(ctx->enc_key, key, keylen);
+ return 0;
+}
+
+static int qce_des3_setkey(struct crypto_skcipher *ablk, const u8 *key,
+ unsigned int keylen)
+{
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(ablk);
+ int err;
+
+ err = verify_skcipher_des3_key(ablk, key);
+ if (err)
+ return err;
+
+ ctx->enc_keylen = keylen;
+ memcpy(ctx->enc_key, key, keylen);
+ return 0;
+}
+
+static int qce_skcipher_crypt(struct skcipher_request *req, int encrypt)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct qce_cipher_reqctx *rctx = skcipher_request_ctx(req);
+ struct qce_alg_template *tmpl = to_cipher_tmpl(tfm);
+ int ret;
+
+ rctx->flags = tmpl->alg_flags;
+ rctx->flags |= encrypt ? QCE_ENCRYPT : QCE_DECRYPT;
+
+ if (IS_AES(rctx->flags) && ctx->enc_keylen != AES_KEYSIZE_128 &&
+ ctx->enc_keylen != AES_KEYSIZE_256) {
+ SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
+
+ skcipher_request_set_sync_tfm(subreq, ctx->fallback);
+ skcipher_request_set_callback(subreq, req->base.flags,
+ NULL, NULL);
+ skcipher_request_set_crypt(subreq, req->src, req->dst,
+ req->cryptlen, req->iv);
+ ret = encrypt ? crypto_skcipher_encrypt(subreq) :
+ crypto_skcipher_decrypt(subreq);
+ skcipher_request_zero(subreq);
+ return ret;
+ }
+
+ return tmpl->qce->async_req_enqueue(tmpl->qce, &req->base);
+}
+
+static int qce_skcipher_encrypt(struct skcipher_request *req)
+{
+ return qce_skcipher_crypt(req, 1);
+}
+
+static int qce_skcipher_decrypt(struct skcipher_request *req)
+{
+ return qce_skcipher_crypt(req, 0);
+}
+
+static int qce_skcipher_init(struct crypto_skcipher *tfm)
+{
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ memset(ctx, 0, sizeof(*ctx));
+ crypto_skcipher_set_reqsize(tfm, sizeof(struct qce_cipher_reqctx));
+
+ ctx->fallback = crypto_alloc_sync_skcipher(crypto_tfm_alg_name(&tfm->base),
+ 0, CRYPTO_ALG_NEED_FALLBACK);
+ return PTR_ERR_OR_ZERO(ctx->fallback);
+}
+
+static void qce_skcipher_exit(struct crypto_skcipher *tfm)
+{
+ struct qce_cipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ crypto_free_sync_skcipher(ctx->fallback);
+}
+
+struct qce_skcipher_def {
+ unsigned long flags;
+ const char *name;
+ const char *drv_name;
+ unsigned int blocksize;
+ unsigned int ivsize;
+ unsigned int min_keysize;
+ unsigned int max_keysize;
+};
+
+static const struct qce_skcipher_def skcipher_def[] = {
+ {
+ .flags = QCE_ALG_AES | QCE_MODE_ECB,
+ .name = "ecb(aes)",
+ .drv_name = "ecb-aes-qce",
+ .blocksize = AES_BLOCK_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_AES | QCE_MODE_CBC,
+ .name = "cbc(aes)",
+ .drv_name = "cbc-aes-qce",
+ .blocksize = AES_BLOCK_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_AES | QCE_MODE_CTR,
+ .name = "ctr(aes)",
+ .drv_name = "ctr-aes-qce",
+ .blocksize = AES_BLOCK_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_AES | QCE_MODE_XTS,
+ .name = "xts(aes)",
+ .drv_name = "xts-aes-qce",
+ .blocksize = AES_BLOCK_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_DES | QCE_MODE_ECB,
+ .name = "ecb(des)",
+ .drv_name = "ecb-des-qce",
+ .blocksize = DES_BLOCK_SIZE,
+ .ivsize = 0,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_DES | QCE_MODE_CBC,
+ .name = "cbc(des)",
+ .drv_name = "cbc-des-qce",
+ .blocksize = DES_BLOCK_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_3DES | QCE_MODE_ECB,
+ .name = "ecb(des3_ede)",
+ .drv_name = "ecb-3des-qce",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .ivsize = 0,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ },
+ {
+ .flags = QCE_ALG_3DES | QCE_MODE_CBC,
+ .name = "cbc(des3_ede)",
+ .drv_name = "cbc-3des-qce",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
+ .min_keysize = DES3_EDE_KEY_SIZE,
+ .max_keysize = DES3_EDE_KEY_SIZE,
+ },
+};
+
+static int qce_skcipher_register_one(const struct qce_skcipher_def *def,
+ struct qce_device *qce)
+{
+ struct qce_alg_template *tmpl;
+ struct skcipher_alg *alg;
+ int ret;
+
+ tmpl = kzalloc(sizeof(*tmpl), GFP_KERNEL);
+ if (!tmpl)
+ return -ENOMEM;
+
+ alg = &tmpl->alg.skcipher;
+
+ snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name);
+ snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ def->drv_name);
+
+ alg->base.cra_blocksize = def->blocksize;
+ alg->ivsize = def->ivsize;
+ alg->min_keysize = def->min_keysize;
+ alg->max_keysize = def->max_keysize;
+ alg->setkey = IS_3DES(def->flags) ? qce_des3_setkey :
+ IS_DES(def->flags) ? qce_des_setkey :
+ qce_skcipher_setkey;
+ alg->encrypt = qce_skcipher_encrypt;
+ alg->decrypt = qce_skcipher_decrypt;
+
+ alg->base.cra_priority = 300;
+ alg->base.cra_flags = CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_NEED_FALLBACK |
+ CRYPTO_ALG_KERN_DRIVER_ONLY;
+ alg->base.cra_ctxsize = sizeof(struct qce_cipher_ctx);
+ alg->base.cra_alignmask = 0;
+ alg->base.cra_module = THIS_MODULE;
+
+ alg->init = qce_skcipher_init;
+ alg->exit = qce_skcipher_exit;
+
+ INIT_LIST_HEAD(&tmpl->entry);
+ tmpl->crypto_alg_type = CRYPTO_ALG_TYPE_SKCIPHER;
+ tmpl->alg_flags = def->flags;
+ tmpl->qce = qce;
+
+ ret = crypto_register_skcipher(alg);
+ if (ret) {
+ kfree(tmpl);
+ dev_err(qce->dev, "%s registration failed\n", alg->base.cra_name);
+ return ret;
+ }
+
+ list_add_tail(&tmpl->entry, &skcipher_algs);
+ dev_dbg(qce->dev, "%s is registered\n", alg->base.cra_name);
+ return 0;
+}
+
+static void qce_skcipher_unregister(struct qce_device *qce)
+{
+ struct qce_alg_template *tmpl, *n;
+
+ list_for_each_entry_safe(tmpl, n, &skcipher_algs, entry) {
+ crypto_unregister_skcipher(&tmpl->alg.skcipher);
+ list_del(&tmpl->entry);
+ kfree(tmpl);
+ }
+}
+
+static int qce_skcipher_register(struct qce_device *qce)
+{
+ int ret, i;
+
+ for (i = 0; i < ARRAY_SIZE(skcipher_def); i++) {
+ ret = qce_skcipher_register_one(&skcipher_def[i], qce);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+err:
+ qce_skcipher_unregister(qce);
+ return ret;
+}
+
+const struct qce_algo_ops skcipher_ops = {
+ .type = CRYPTO_ALG_TYPE_SKCIPHER,
+ .register_algs = qce_skcipher_register,
+ .unregister_algs = qce_skcipher_unregister,
+ .async_req_handle = qce_skcipher_async_req_handle,
+};
projects / kernel.git / commitdiff