v4.19.13 snapshot.
diff --git a/drivers/crypto/qce/ablkcipher.c b/drivers/crypto/qce/ablkcipher.c
new file mode 100644
index 0000000..ea4d96b
--- /dev/null
+++ b/drivers/crypto/qce/ablkcipher.c
@@ -0,0 +1,431 @@
+/*
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only 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/device.h>
+#include <linux/interrupt.h>
+#include <linux/types.h>
+#include <crypto/aes.h>
+#include <crypto/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);
+ unsigned long flags = to_cipher_tmpl(tfm)->alg_flags;
+ int ret;
+
+ if (!key || !keylen)
+ return -EINVAL;
+
+ if (IS_AES(flags)) {
+ switch (keylen) {
+ case AES_KEYSIZE_128:
+ case AES_KEYSIZE_256:
+ break;
+ default:
+ goto fallback;
+ }
+ } else if (IS_DES(flags)) {
+ u32 tmp[DES_EXPKEY_WORDS];
+
+ ret = des_ekey(tmp, key);
+ if (!ret && crypto_ablkcipher_get_flags(ablk) &
+ CRYPTO_TFM_REQ_WEAK_KEY)
+ goto weakkey;
+ }
+
+ ctx->enc_keylen = keylen;
+ memcpy(ctx->enc_key, key, keylen);
+ return 0;
+fallback:
+ ret = crypto_skcipher_setkey(ctx->fallback, key, keylen);
+ if (!ret)
+ ctx->enc_keylen = keylen;
+ return ret;
+weakkey:
+ crypto_ablkcipher_set_flags(ablk, CRYPTO_TFM_RES_WEAK_KEY);
+ return -EINVAL;
+}
+
+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) {
+ SKCIPHER_REQUEST_ON_STACK(subreq, ctx->fallback);
+
+ skcipher_request_set_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_skcipher(crypto_tfm_alg_name(tfm), 0,
+ CRYPTO_ALG_ASYNC |
+ 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_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 = 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;
+ 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(&alg->cra_list);
+
+ 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,
+};