diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/crypto/hisilicon/sec2/sec_crypto.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/crypto/hisilicon/sec2/sec_crypto.c')
-rw-r--r-- | drivers/crypto/hisilicon/sec2/sec_crypto.c | 1661 |
1 files changed, 1661 insertions, 0 deletions
diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c new file mode 100644 index 000000000..2dbec638c --- /dev/null +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -0,0 +1,1661 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 HiSilicon Limited. */ + +#include <crypto/aes.h> +#include <crypto/algapi.h> +#include <crypto/authenc.h> +#include <crypto/des.h> +#include <crypto/hash.h> +#include <crypto/internal/aead.h> +#include <crypto/sha.h> +#include <crypto/skcipher.h> +#include <crypto/xts.h> +#include <linux/crypto.h> +#include <linux/dma-mapping.h> +#include <linux/idr.h> + +#include "sec.h" +#include "sec_crypto.h" + +#define SEC_PRIORITY 4001 +#define SEC_XTS_MIN_KEY_SIZE (2 * AES_MIN_KEY_SIZE) +#define SEC_XTS_MAX_KEY_SIZE (2 * AES_MAX_KEY_SIZE) +#define SEC_DES3_2KEY_SIZE (2 * DES_KEY_SIZE) +#define SEC_DES3_3KEY_SIZE (3 * DES_KEY_SIZE) + +/* SEC sqe(bd) bit operational relative MACRO */ +#define SEC_DE_OFFSET 1 +#define SEC_CIPHER_OFFSET 4 +#define SEC_SCENE_OFFSET 3 +#define SEC_DST_SGL_OFFSET 2 +#define SEC_SRC_SGL_OFFSET 7 +#define SEC_CKEY_OFFSET 9 +#define SEC_CMODE_OFFSET 12 +#define SEC_AKEY_OFFSET 5 +#define SEC_AEAD_ALG_OFFSET 11 +#define SEC_AUTH_OFFSET 6 + +#define SEC_FLAG_OFFSET 7 +#define SEC_FLAG_MASK 0x0780 +#define SEC_TYPE_MASK 0x0F +#define SEC_DONE_MASK 0x0001 + +#define SEC_TOTAL_IV_SZ (SEC_IV_SIZE * QM_Q_DEPTH) +#define SEC_SGL_SGE_NR 128 +#define SEC_CIPHER_AUTH 0xfe +#define SEC_AUTH_CIPHER 0x1 +#define SEC_MAX_MAC_LEN 64 +#define SEC_MAX_AAD_LEN 65535 +#define SEC_TOTAL_MAC_SZ (SEC_MAX_MAC_LEN * QM_Q_DEPTH) + +#define SEC_PBUF_SZ 512 +#define SEC_PBUF_IV_OFFSET SEC_PBUF_SZ +#define SEC_PBUF_MAC_OFFSET (SEC_PBUF_SZ + SEC_IV_SIZE) +#define SEC_PBUF_PKG (SEC_PBUF_SZ + SEC_IV_SIZE + \ + SEC_MAX_MAC_LEN * 2) +#define SEC_PBUF_NUM (PAGE_SIZE / SEC_PBUF_PKG) +#define SEC_PBUF_PAGE_NUM (QM_Q_DEPTH / SEC_PBUF_NUM) +#define SEC_PBUF_LEFT_SZ (SEC_PBUF_PKG * (QM_Q_DEPTH - \ + SEC_PBUF_PAGE_NUM * SEC_PBUF_NUM)) +#define SEC_TOTAL_PBUF_SZ (PAGE_SIZE * SEC_PBUF_PAGE_NUM + \ + SEC_PBUF_LEFT_SZ) + +#define SEC_SQE_LEN_RATE 4 +#define SEC_SQE_CFLAG 2 +#define SEC_SQE_AEAD_FLAG 3 +#define SEC_SQE_DONE 0x1 + +/* Get an en/de-cipher queue cyclically to balance load over queues of TFM */ +static inline int sec_alloc_queue_id(struct sec_ctx *ctx, struct sec_req *req) +{ + if (req->c_req.encrypt) + return (u32)atomic_inc_return(&ctx->enc_qcyclic) % + ctx->hlf_q_num; + + return (u32)atomic_inc_return(&ctx->dec_qcyclic) % ctx->hlf_q_num + + ctx->hlf_q_num; +} + +static inline void sec_free_queue_id(struct sec_ctx *ctx, struct sec_req *req) +{ + if (req->c_req.encrypt) + atomic_dec(&ctx->enc_qcyclic); + else + atomic_dec(&ctx->dec_qcyclic); +} + +static int sec_alloc_req_id(struct sec_req *req, struct sec_qp_ctx *qp_ctx) +{ + int req_id; + + spin_lock_bh(&qp_ctx->req_lock); + + req_id = idr_alloc_cyclic(&qp_ctx->req_idr, NULL, + 0, QM_Q_DEPTH, GFP_ATOMIC); + spin_unlock_bh(&qp_ctx->req_lock); + if (unlikely(req_id < 0)) { + dev_err(req->ctx->dev, "alloc req id fail!\n"); + return req_id; + } + + req->qp_ctx = qp_ctx; + qp_ctx->req_list[req_id] = req; + return req_id; +} + +static void sec_free_req_id(struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + int req_id = req->req_id; + + if (unlikely(req_id < 0 || req_id >= QM_Q_DEPTH)) { + dev_err(req->ctx->dev, "free request id invalid!\n"); + return; + } + + qp_ctx->req_list[req_id] = NULL; + req->qp_ctx = NULL; + + spin_lock_bh(&qp_ctx->req_lock); + idr_remove(&qp_ctx->req_idr, req_id); + spin_unlock_bh(&qp_ctx->req_lock); +} + +static int sec_aead_verify(struct sec_req *req) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(aead_req); + size_t authsize = crypto_aead_authsize(tfm); + u8 *mac_out = req->aead_req.out_mac; + u8 *mac = mac_out + SEC_MAX_MAC_LEN; + struct scatterlist *sgl = aead_req->src; + size_t sz; + + sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), mac, authsize, + aead_req->cryptlen + aead_req->assoclen - + authsize); + if (unlikely(sz != authsize || memcmp(mac_out, mac, sz))) { + dev_err(req->ctx->dev, "aead verify failure!\n"); + return -EBADMSG; + } + + return 0; +} + +static void sec_req_cb(struct hisi_qp *qp, void *resp) +{ + struct sec_qp_ctx *qp_ctx = qp->qp_ctx; + struct sec_dfx *dfx = &qp_ctx->ctx->sec->debug.dfx; + struct sec_sqe *bd = resp; + struct sec_ctx *ctx; + struct sec_req *req; + u16 done, flag; + int err = 0; + u8 type; + + type = bd->type_cipher_auth & SEC_TYPE_MASK; + if (unlikely(type != SEC_BD_TYPE2)) { + atomic64_inc(&dfx->err_bd_cnt); + pr_err("err bd type [%d]\n", type); + return; + } + + req = qp_ctx->req_list[le16_to_cpu(bd->type2.tag)]; + if (unlikely(!req)) { + atomic64_inc(&dfx->invalid_req_cnt); + atomic_inc(&qp->qp_status.used); + return; + } + req->err_type = bd->type2.error_type; + ctx = req->ctx; + done = le16_to_cpu(bd->type2.done_flag) & SEC_DONE_MASK; + flag = (le16_to_cpu(bd->type2.done_flag) & + SEC_FLAG_MASK) >> SEC_FLAG_OFFSET; + if (unlikely(req->err_type || done != SEC_SQE_DONE || + (ctx->alg_type == SEC_SKCIPHER && flag != SEC_SQE_CFLAG) || + (ctx->alg_type == SEC_AEAD && flag != SEC_SQE_AEAD_FLAG))) { + dev_err_ratelimited(ctx->dev, + "err_type[%d],done[%d],flag[%d]\n", + req->err_type, done, flag); + err = -EIO; + atomic64_inc(&dfx->done_flag_cnt); + } + + if (ctx->alg_type == SEC_AEAD && !req->c_req.encrypt) + err = sec_aead_verify(req); + + atomic64_inc(&dfx->recv_cnt); + + ctx->req_op->buf_unmap(ctx, req); + + ctx->req_op->callback(ctx, req, err); +} + +static int sec_bd_send(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + int ret; + + if (ctx->fake_req_limit <= + atomic_read(&qp_ctx->qp->qp_status.used) && + !(req->flag & CRYPTO_TFM_REQ_MAY_BACKLOG)) + return -EBUSY; + + spin_lock_bh(&qp_ctx->req_lock); + ret = hisi_qp_send(qp_ctx->qp, &req->sec_sqe); + + if (ctx->fake_req_limit <= + atomic_read(&qp_ctx->qp->qp_status.used) && !ret) { + list_add_tail(&req->backlog_head, &qp_ctx->backlog); + atomic64_inc(&ctx->sec->debug.dfx.send_cnt); + atomic64_inc(&ctx->sec->debug.dfx.send_busy_cnt); + spin_unlock_bh(&qp_ctx->req_lock); + return -EBUSY; + } + spin_unlock_bh(&qp_ctx->req_lock); + + if (unlikely(ret == -EBUSY)) + return -ENOBUFS; + + if (likely(!ret)) { + ret = -EINPROGRESS; + atomic64_inc(&ctx->sec->debug.dfx.send_cnt); + } + + return ret; +} + +/* Get DMA memory resources */ +static int sec_alloc_civ_resource(struct device *dev, struct sec_alg_res *res) +{ + int i; + + res->c_ivin = dma_alloc_coherent(dev, SEC_TOTAL_IV_SZ, + &res->c_ivin_dma, GFP_KERNEL); + if (!res->c_ivin) + return -ENOMEM; + + for (i = 1; i < QM_Q_DEPTH; i++) { + res[i].c_ivin_dma = res->c_ivin_dma + i * SEC_IV_SIZE; + res[i].c_ivin = res->c_ivin + i * SEC_IV_SIZE; + } + + return 0; +} + +static void sec_free_civ_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->c_ivin) + dma_free_coherent(dev, SEC_TOTAL_IV_SZ, + res->c_ivin, res->c_ivin_dma); +} + +static int sec_alloc_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + int i; + + res->out_mac = dma_alloc_coherent(dev, SEC_TOTAL_MAC_SZ << 1, + &res->out_mac_dma, GFP_KERNEL); + if (!res->out_mac) + return -ENOMEM; + + for (i = 1; i < QM_Q_DEPTH; i++) { + res[i].out_mac_dma = res->out_mac_dma + + i * (SEC_MAX_MAC_LEN << 1); + res[i].out_mac = res->out_mac + i * (SEC_MAX_MAC_LEN << 1); + } + + return 0; +} + +static void sec_free_mac_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->out_mac) + dma_free_coherent(dev, SEC_TOTAL_MAC_SZ << 1, + res->out_mac, res->out_mac_dma); +} + +static void sec_free_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + if (res->pbuf) + dma_free_coherent(dev, SEC_TOTAL_PBUF_SZ, + res->pbuf, res->pbuf_dma); +} + +/* + * To improve performance, pbuffer is used for + * small packets (< 512Bytes) as IOMMU translation using. + */ +static int sec_alloc_pbuf_resource(struct device *dev, struct sec_alg_res *res) +{ + int pbuf_page_offset; + int i, j, k; + + res->pbuf = dma_alloc_coherent(dev, SEC_TOTAL_PBUF_SZ, + &res->pbuf_dma, GFP_KERNEL); + if (!res->pbuf) + return -ENOMEM; + + /* + * SEC_PBUF_PKG contains data pbuf, iv and + * out_mac : <SEC_PBUF|SEC_IV|SEC_MAC> + * Every PAGE contains six SEC_PBUF_PKG + * The sec_qp_ctx contains QM_Q_DEPTH numbers of SEC_PBUF_PKG + * So we need SEC_PBUF_PAGE_NUM numbers of PAGE + * for the SEC_TOTAL_PBUF_SZ + */ + for (i = 0; i <= SEC_PBUF_PAGE_NUM; i++) { + pbuf_page_offset = PAGE_SIZE * i; + for (j = 0; j < SEC_PBUF_NUM; j++) { + k = i * SEC_PBUF_NUM + j; + if (k == QM_Q_DEPTH) + break; + res[k].pbuf = res->pbuf + + j * SEC_PBUF_PKG + pbuf_page_offset; + res[k].pbuf_dma = res->pbuf_dma + + j * SEC_PBUF_PKG + pbuf_page_offset; + } + } + return 0; +} + +static int sec_alg_resource_alloc(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct sec_alg_res *res = qp_ctx->res; + struct device *dev = ctx->dev; + int ret; + + ret = sec_alloc_civ_resource(dev, res); + if (ret) + return ret; + + if (ctx->alg_type == SEC_AEAD) { + ret = sec_alloc_mac_resource(dev, res); + if (ret) + goto alloc_fail; + } + if (ctx->pbuf_supported) { + ret = sec_alloc_pbuf_resource(dev, res); + if (ret) { + dev_err(dev, "fail to alloc pbuf dma resource!\n"); + goto alloc_pbuf_fail; + } + } + + return 0; +alloc_pbuf_fail: + if (ctx->alg_type == SEC_AEAD) + sec_free_mac_resource(dev, qp_ctx->res); +alloc_fail: + sec_free_civ_resource(dev, res); + + return ret; +} + +static void sec_alg_resource_free(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct device *dev = ctx->dev; + + sec_free_civ_resource(dev, qp_ctx->res); + + if (ctx->pbuf_supported) + sec_free_pbuf_resource(dev, qp_ctx->res); + if (ctx->alg_type == SEC_AEAD) + sec_free_mac_resource(dev, qp_ctx->res); +} + +static int sec_create_qp_ctx(struct hisi_qm *qm, struct sec_ctx *ctx, + int qp_ctx_id, int alg_type) +{ + struct device *dev = ctx->dev; + struct sec_qp_ctx *qp_ctx; + struct hisi_qp *qp; + int ret = -ENOMEM; + + qp_ctx = &ctx->qp_ctx[qp_ctx_id]; + qp = ctx->qps[qp_ctx_id]; + qp->req_type = 0; + qp->qp_ctx = qp_ctx; + qp->req_cb = sec_req_cb; + qp_ctx->qp = qp; + qp_ctx->ctx = ctx; + + spin_lock_init(&qp_ctx->req_lock); + idr_init(&qp_ctx->req_idr); + INIT_LIST_HEAD(&qp_ctx->backlog); + + qp_ctx->c_in_pool = hisi_acc_create_sgl_pool(dev, QM_Q_DEPTH, + SEC_SGL_SGE_NR); + if (IS_ERR(qp_ctx->c_in_pool)) { + dev_err(dev, "fail to create sgl pool for input!\n"); + goto err_destroy_idr; + } + + qp_ctx->c_out_pool = hisi_acc_create_sgl_pool(dev, QM_Q_DEPTH, + SEC_SGL_SGE_NR); + if (IS_ERR(qp_ctx->c_out_pool)) { + dev_err(dev, "fail to create sgl pool for output!\n"); + goto err_free_c_in_pool; + } + + ret = sec_alg_resource_alloc(ctx, qp_ctx); + if (ret) + goto err_free_c_out_pool; + + ret = hisi_qm_start_qp(qp, 0); + if (ret < 0) + goto err_queue_free; + + return 0; + +err_queue_free: + sec_alg_resource_free(ctx, qp_ctx); +err_free_c_out_pool: + hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool); +err_free_c_in_pool: + hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool); +err_destroy_idr: + idr_destroy(&qp_ctx->req_idr); + + return ret; +} + +static void sec_release_qp_ctx(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct device *dev = ctx->dev; + + hisi_qm_stop_qp(qp_ctx->qp); + sec_alg_resource_free(ctx, qp_ctx); + + hisi_acc_free_sgl_pool(dev, qp_ctx->c_out_pool); + hisi_acc_free_sgl_pool(dev, qp_ctx->c_in_pool); + + idr_destroy(&qp_ctx->req_idr); +} + +static int sec_ctx_base_init(struct sec_ctx *ctx) +{ + struct sec_dev *sec; + int i, ret; + + ctx->qps = sec_create_qps(); + if (!ctx->qps) { + pr_err("Can not create sec qps!\n"); + return -ENODEV; + } + + sec = container_of(ctx->qps[0]->qm, struct sec_dev, qm); + ctx->sec = sec; + ctx->dev = &sec->qm.pdev->dev; + ctx->hlf_q_num = sec->ctx_q_num >> 1; + + ctx->pbuf_supported = ctx->sec->iommu_used; + + /* Half of queue depth is taken as fake requests limit in the queue. */ + ctx->fake_req_limit = QM_Q_DEPTH >> 1; + ctx->qp_ctx = kcalloc(sec->ctx_q_num, sizeof(struct sec_qp_ctx), + GFP_KERNEL); + if (!ctx->qp_ctx) { + ret = -ENOMEM; + goto err_destroy_qps; + } + + for (i = 0; i < sec->ctx_q_num; i++) { + ret = sec_create_qp_ctx(&sec->qm, ctx, i, 0); + if (ret) + goto err_sec_release_qp_ctx; + } + + return 0; + +err_sec_release_qp_ctx: + for (i = i - 1; i >= 0; i--) + sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]); + kfree(ctx->qp_ctx); +err_destroy_qps: + sec_destroy_qps(ctx->qps, sec->ctx_q_num); + return ret; +} + +static void sec_ctx_base_uninit(struct sec_ctx *ctx) +{ + int i; + + for (i = 0; i < ctx->sec->ctx_q_num; i++) + sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]); + + sec_destroy_qps(ctx->qps, ctx->sec->ctx_q_num); + kfree(ctx->qp_ctx); +} + +static int sec_cipher_init(struct sec_ctx *ctx) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + + c_ctx->c_key = dma_alloc_coherent(ctx->dev, SEC_MAX_KEY_SIZE, + &c_ctx->c_key_dma, GFP_KERNEL); + if (!c_ctx->c_key) + return -ENOMEM; + + return 0; +} + +static void sec_cipher_uninit(struct sec_ctx *ctx) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + + memzero_explicit(c_ctx->c_key, SEC_MAX_KEY_SIZE); + dma_free_coherent(ctx->dev, SEC_MAX_KEY_SIZE, + c_ctx->c_key, c_ctx->c_key_dma); +} + +static int sec_auth_init(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + a_ctx->a_key = dma_alloc_coherent(ctx->dev, SEC_MAX_AKEY_SIZE, + &a_ctx->a_key_dma, GFP_KERNEL); + if (!a_ctx->a_key) + return -ENOMEM; + + return 0; +} + +static void sec_auth_uninit(struct sec_ctx *ctx) +{ + struct sec_auth_ctx *a_ctx = &ctx->a_ctx; + + memzero_explicit(a_ctx->a_key, SEC_MAX_AKEY_SIZE); + dma_free_coherent(ctx->dev, SEC_MAX_AKEY_SIZE, + a_ctx->a_key, a_ctx->a_key_dma); +} + +static int sec_skcipher_init(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + ctx->alg_type = SEC_SKCIPHER; + crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_req)); + ctx->c_ctx.ivsize = crypto_skcipher_ivsize(tfm); + if (ctx->c_ctx.ivsize > SEC_IV_SIZE) { + pr_err("get error skcipher iv size!\n"); + return -EINVAL; + } + + ret = sec_ctx_base_init(ctx); + if (ret) + return ret; + + ret = sec_cipher_init(ctx); + if (ret) + goto err_cipher_init; + + return 0; +err_cipher_init: + sec_ctx_base_uninit(ctx); + + return ret; +} + +static void sec_skcipher_uninit(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + + sec_cipher_uninit(ctx); + sec_ctx_base_uninit(ctx); +} + +static int sec_skcipher_3des_setkey(struct sec_cipher_ctx *c_ctx, + const u32 keylen, + const enum sec_cmode c_mode) +{ + switch (keylen) { + case SEC_DES3_2KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_3DES_2KEY; + break; + case SEC_DES3_3KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_3DES_3KEY; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int sec_skcipher_aes_sm4_setkey(struct sec_cipher_ctx *c_ctx, + const u32 keylen, + const enum sec_cmode c_mode) +{ + if (c_mode == SEC_CMODE_XTS) { + switch (keylen) { + case SEC_XTS_MIN_KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case SEC_XTS_MAX_KEY_SIZE: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: xts mode key error!\n"); + return -EINVAL; + } + } else { + switch (keylen) { + case AES_KEYSIZE_128: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case AES_KEYSIZE_192: + c_ctx->c_key_len = SEC_CKEY_192BIT; + break; + case AES_KEYSIZE_256: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: aes key error!\n"); + return -EINVAL; + } + } + + return 0; +} + +static int sec_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key, + const u32 keylen, const enum sec_calg c_alg, + const enum sec_cmode c_mode) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct device *dev = ctx->dev; + int ret; + + if (c_mode == SEC_CMODE_XTS) { + ret = xts_verify_key(tfm, key, keylen); + if (ret) { + dev_err(dev, "xts mode key err!\n"); + return ret; + } + } + + c_ctx->c_alg = c_alg; + c_ctx->c_mode = c_mode; + + switch (c_alg) { + case SEC_CALG_3DES: + ret = sec_skcipher_3des_setkey(c_ctx, keylen, c_mode); + break; + case SEC_CALG_AES: + case SEC_CALG_SM4: + ret = sec_skcipher_aes_sm4_setkey(c_ctx, keylen, c_mode); + break; + default: + return -EINVAL; + } + + if (ret) { + dev_err(dev, "set sec key err!\n"); + return ret; + } + + memcpy(c_ctx->c_key, key, keylen); + + return 0; +} + +#define GEN_SEC_SETKEY_FUNC(name, c_alg, c_mode) \ +static int sec_setkey_##name(struct crypto_skcipher *tfm, const u8 *key,\ + u32 keylen) \ +{ \ + return sec_skcipher_setkey(tfm, key, keylen, c_alg, c_mode); \ +} + +GEN_SEC_SETKEY_FUNC(aes_ecb, SEC_CALG_AES, SEC_CMODE_ECB) +GEN_SEC_SETKEY_FUNC(aes_cbc, SEC_CALG_AES, SEC_CMODE_CBC) +GEN_SEC_SETKEY_FUNC(aes_xts, SEC_CALG_AES, SEC_CMODE_XTS) + +GEN_SEC_SETKEY_FUNC(3des_ecb, SEC_CALG_3DES, SEC_CMODE_ECB) +GEN_SEC_SETKEY_FUNC(3des_cbc, SEC_CALG_3DES, SEC_CMODE_CBC) + +GEN_SEC_SETKEY_FUNC(sm4_xts, SEC_CALG_SM4, SEC_CMODE_XTS) +GEN_SEC_SETKEY_FUNC(sm4_cbc, SEC_CALG_SM4, SEC_CMODE_CBC) + +static int sec_cipher_pbuf_map(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct device *dev = ctx->dev; + int copy_size, pbuf_length; + int req_id = req->req_id; + + if (ctx->alg_type == SEC_AEAD) + copy_size = aead_req->cryptlen + aead_req->assoclen; + else + copy_size = c_req->c_len; + + pbuf_length = sg_copy_to_buffer(src, sg_nents(src), + qp_ctx->res[req_id].pbuf, + copy_size); + if (unlikely(pbuf_length != copy_size)) { + dev_err(dev, "copy src data to pbuf error!\n"); + return -EINVAL; + } + + c_req->c_in_dma = qp_ctx->res[req_id].pbuf_dma; + + if (!c_req->c_in_dma) { + dev_err(dev, "fail to set pbuffer address!\n"); + return -ENOMEM; + } + + c_req->c_out_dma = c_req->c_in_dma; + + return 0; +} + +static void sec_cipher_pbuf_unmap(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *dst) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct device *dev = ctx->dev; + int copy_size, pbuf_length; + int req_id = req->req_id; + + if (ctx->alg_type == SEC_AEAD) + copy_size = c_req->c_len + aead_req->assoclen; + else + copy_size = c_req->c_len; + + pbuf_length = sg_copy_from_buffer(dst, sg_nents(dst), + qp_ctx->res[req_id].pbuf, + copy_size); + if (unlikely(pbuf_length != copy_size)) + dev_err(dev, "copy pbuf data to dst error!\n"); + +} + +static int sec_cipher_map(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_cipher_req *c_req = &req->c_req; + struct sec_aead_req *a_req = &req->aead_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct sec_alg_res *res = &qp_ctx->res[req->req_id]; + struct device *dev = ctx->dev; + int ret; + + if (req->use_pbuf) { + ret = sec_cipher_pbuf_map(ctx, req, src); + c_req->c_ivin = res->pbuf + SEC_PBUF_IV_OFFSET; + c_req->c_ivin_dma = res->pbuf_dma + SEC_PBUF_IV_OFFSET; + if (ctx->alg_type == SEC_AEAD) { + a_req->out_mac = res->pbuf + SEC_PBUF_MAC_OFFSET; + a_req->out_mac_dma = res->pbuf_dma + + SEC_PBUF_MAC_OFFSET; + } + + return ret; + } + c_req->c_ivin = res->c_ivin; + c_req->c_ivin_dma = res->c_ivin_dma; + if (ctx->alg_type == SEC_AEAD) { + a_req->out_mac = res->out_mac; + a_req->out_mac_dma = res->out_mac_dma; + } + + c_req->c_in = hisi_acc_sg_buf_map_to_hw_sgl(dev, src, + qp_ctx->c_in_pool, + req->req_id, + &c_req->c_in_dma); + + if (IS_ERR(c_req->c_in)) { + dev_err(dev, "fail to dma map input sgl buffers!\n"); + return PTR_ERR(c_req->c_in); + } + + if (dst == src) { + c_req->c_out = c_req->c_in; + c_req->c_out_dma = c_req->c_in_dma; + } else { + c_req->c_out = hisi_acc_sg_buf_map_to_hw_sgl(dev, dst, + qp_ctx->c_out_pool, + req->req_id, + &c_req->c_out_dma); + + if (IS_ERR(c_req->c_out)) { + dev_err(dev, "fail to dma map output sgl buffers!\n"); + hisi_acc_sg_buf_unmap(dev, src, c_req->c_in); + return PTR_ERR(c_req->c_out); + } + } + + return 0; +} + +static void sec_cipher_unmap(struct sec_ctx *ctx, struct sec_req *req, + struct scatterlist *src, struct scatterlist *dst) +{ + struct sec_cipher_req *c_req = &req->c_req; + struct device *dev = ctx->dev; + + if (req->use_pbuf) { + sec_cipher_pbuf_unmap(ctx, req, dst); + } else { + if (dst != src) + hisi_acc_sg_buf_unmap(dev, src, c_req->c_in); + + hisi_acc_sg_buf_unmap(dev, dst, c_req->c_out); + } +} + +static int sec_skcipher_sgl_map(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sq = req->c_req.sk_req; + + return sec_cipher_map(ctx, req, sq->src, sq->dst); +} + +static void sec_skcipher_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sq = req->c_req.sk_req; + + sec_cipher_unmap(ctx, req, sq->src, sq->dst); +} + +static int sec_aead_aes_set_key(struct sec_cipher_ctx *c_ctx, + struct crypto_authenc_keys *keys) +{ + switch (keys->enckeylen) { + case AES_KEYSIZE_128: + c_ctx->c_key_len = SEC_CKEY_128BIT; + break; + case AES_KEYSIZE_192: + c_ctx->c_key_len = SEC_CKEY_192BIT; + break; + case AES_KEYSIZE_256: + c_ctx->c_key_len = SEC_CKEY_256BIT; + break; + default: + pr_err("hisi_sec2: aead aes key error!\n"); + return -EINVAL; + } + memcpy(c_ctx->c_key, keys->enckey, keys->enckeylen); + + return 0; +} + +static int sec_aead_auth_set_key(struct sec_auth_ctx *ctx, + struct crypto_authenc_keys *keys) +{ + struct crypto_shash *hash_tfm = ctx->hash_tfm; + int blocksize, ret; + + if (!keys->authkeylen) { + pr_err("hisi_sec2: aead auth key error!\n"); + return -EINVAL; + } + + blocksize = crypto_shash_blocksize(hash_tfm); + if (keys->authkeylen > blocksize) { + ret = crypto_shash_tfm_digest(hash_tfm, keys->authkey, + keys->authkeylen, ctx->a_key); + if (ret) { + pr_err("hisi_sec2: aead auth digest error!\n"); + return -EINVAL; + } + ctx->a_key_len = blocksize; + } else { + memcpy(ctx->a_key, keys->authkey, keys->authkeylen); + ctx->a_key_len = keys->authkeylen; + } + + return 0; +} + +static int sec_aead_setkey(struct crypto_aead *tfm, const u8 *key, + const u32 keylen, const enum sec_hash_alg a_alg, + const enum sec_calg c_alg, + const enum sec_mac_len mac_len, + const enum sec_cmode c_mode) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct device *dev = ctx->dev; + struct crypto_authenc_keys keys; + int ret; + + ctx->a_ctx.a_alg = a_alg; + ctx->c_ctx.c_alg = c_alg; + ctx->a_ctx.mac_len = mac_len; + c_ctx->c_mode = c_mode; + + if (crypto_authenc_extractkeys(&keys, key, keylen)) + goto bad_key; + + ret = sec_aead_aes_set_key(c_ctx, &keys); + if (ret) { + dev_err(dev, "set sec cipher key err!\n"); + goto bad_key; + } + + ret = sec_aead_auth_set_key(&ctx->a_ctx, &keys); + if (ret) { + dev_err(dev, "set sec auth key err!\n"); + goto bad_key; + } + + return 0; +bad_key: + memzero_explicit(&keys, sizeof(struct crypto_authenc_keys)); + + return -EINVAL; +} + + +#define GEN_SEC_AEAD_SETKEY_FUNC(name, aalg, calg, maclen, cmode) \ +static int sec_setkey_##name(struct crypto_aead *tfm, const u8 *key, \ + u32 keylen) \ +{ \ + return sec_aead_setkey(tfm, key, keylen, aalg, calg, maclen, cmode);\ +} + +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha1, SEC_A_HMAC_SHA1, + SEC_CALG_AES, SEC_HMAC_SHA1_MAC, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha256, SEC_A_HMAC_SHA256, + SEC_CALG_AES, SEC_HMAC_SHA256_MAC, SEC_CMODE_CBC) +GEN_SEC_AEAD_SETKEY_FUNC(aes_cbc_sha512, SEC_A_HMAC_SHA512, + SEC_CALG_AES, SEC_HMAC_SHA512_MAC, SEC_CMODE_CBC) + +static int sec_aead_sgl_map(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aq = req->aead_req.aead_req; + + return sec_cipher_map(ctx, req, aq->src, aq->dst); +} + +static void sec_aead_sgl_unmap(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aq = req->aead_req.aead_req; + + sec_cipher_unmap(ctx, req, aq->src, aq->dst); +} + +static int sec_request_transfer(struct sec_ctx *ctx, struct sec_req *req) +{ + int ret; + + ret = ctx->req_op->buf_map(ctx, req); + if (unlikely(ret)) + return ret; + + ctx->req_op->do_transfer(ctx, req); + + ret = ctx->req_op->bd_fill(ctx, req); + if (unlikely(ret)) + goto unmap_req_buf; + + return ret; + +unmap_req_buf: + ctx->req_op->buf_unmap(ctx, req); + + return ret; +} + +static void sec_request_untransfer(struct sec_ctx *ctx, struct sec_req *req) +{ + ctx->req_op->buf_unmap(ctx, req); +} + +static void sec_skcipher_copy_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct skcipher_request *sk_req = req->c_req.sk_req; + struct sec_cipher_req *c_req = &req->c_req; + + memcpy(c_req->c_ivin, sk_req->iv, ctx->c_ctx.ivsize); +} + +static int sec_skcipher_bd_fill(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; + struct sec_cipher_req *c_req = &req->c_req; + struct sec_sqe *sec_sqe = &req->sec_sqe; + u8 scene, sa_type, da_type; + u8 bd_type, cipher; + u8 de = 0; + + memset(sec_sqe, 0, sizeof(struct sec_sqe)); + + sec_sqe->type2.c_key_addr = cpu_to_le64(c_ctx->c_key_dma); + sec_sqe->type2.c_ivin_addr = cpu_to_le64(c_req->c_ivin_dma); + sec_sqe->type2.data_src_addr = cpu_to_le64(c_req->c_in_dma); + sec_sqe->type2.data_dst_addr = cpu_to_le64(c_req->c_out_dma); + + sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_mode) << + SEC_CMODE_OFFSET); + sec_sqe->type2.c_alg = c_ctx->c_alg; + sec_sqe->type2.icvw_kmode |= cpu_to_le16(((u16)c_ctx->c_key_len) << + SEC_CKEY_OFFSET); + + bd_type = SEC_BD_TYPE2; + if (c_req->encrypt) + cipher = SEC_CIPHER_ENC << SEC_CIPHER_OFFSET; + else + cipher = SEC_CIPHER_DEC << SEC_CIPHER_OFFSET; + sec_sqe->type_cipher_auth = bd_type | cipher; + + if (req->use_pbuf) + sa_type = SEC_PBUF << SEC_SRC_SGL_OFFSET; + else + sa_type = SEC_SGL << SEC_SRC_SGL_OFFSET; + scene = SEC_COMM_SCENE << SEC_SCENE_OFFSET; + if (c_req->c_in_dma != c_req->c_out_dma) + de = 0x1 << SEC_DE_OFFSET; + + sec_sqe->sds_sa_type = (de | scene | sa_type); + + /* Just set DST address type */ + if (req->use_pbuf) + da_type = SEC_PBUF << SEC_DST_SGL_OFFSET; + else + da_type = SEC_SGL << SEC_DST_SGL_OFFSET; + sec_sqe->sdm_addr_type |= da_type; + + sec_sqe->type2.clen_ivhlen |= cpu_to_le32(c_req->c_len); + sec_sqe->type2.tag = cpu_to_le16((u16)req->req_id); + + return 0; +} + +static void sec_update_iv(struct sec_req *req, enum sec_alg_type alg_type) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct skcipher_request *sk_req = req->c_req.sk_req; + u32 iv_size = req->ctx->c_ctx.ivsize; + struct scatterlist *sgl; + unsigned int cryptlen; + size_t sz; + u8 *iv; + + if (req->c_req.encrypt) + sgl = alg_type == SEC_SKCIPHER ? sk_req->dst : aead_req->dst; + else + sgl = alg_type == SEC_SKCIPHER ? sk_req->src : aead_req->src; + + if (alg_type == SEC_SKCIPHER) { + iv = sk_req->iv; + cryptlen = sk_req->cryptlen; + } else { + iv = aead_req->iv; + cryptlen = aead_req->cryptlen; + } + + sz = sg_pcopy_to_buffer(sgl, sg_nents(sgl), iv, iv_size, + cryptlen - iv_size); + if (unlikely(sz != iv_size)) + dev_err(req->ctx->dev, "copy output iv error!\n"); +} + +static struct sec_req *sec_back_req_clear(struct sec_ctx *ctx, + struct sec_qp_ctx *qp_ctx) +{ + struct sec_req *backlog_req = NULL; + + spin_lock_bh(&qp_ctx->req_lock); + if (ctx->fake_req_limit >= + atomic_read(&qp_ctx->qp->qp_status.used) && + !list_empty(&qp_ctx->backlog)) { + backlog_req = list_first_entry(&qp_ctx->backlog, + typeof(*backlog_req), backlog_head); + list_del(&backlog_req->backlog_head); + } + spin_unlock_bh(&qp_ctx->req_lock); + + return backlog_req; +} + +static void sec_skcipher_callback(struct sec_ctx *ctx, struct sec_req *req, + int err) +{ + struct skcipher_request *sk_req = req->c_req.sk_req; + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct skcipher_request *backlog_sk_req; + struct sec_req *backlog_req; + + sec_free_req_id(req); + + /* IV output at encrypto of CBC mode */ + if (!err && ctx->c_ctx.c_mode == SEC_CMODE_CBC && req->c_req.encrypt) + sec_update_iv(req, SEC_SKCIPHER); + + while (1) { + backlog_req = sec_back_req_clear(ctx, qp_ctx); + if (!backlog_req) + break; + + backlog_sk_req = backlog_req->c_req.sk_req; + backlog_sk_req->base.complete(&backlog_sk_req->base, + -EINPROGRESS); + atomic64_inc(&ctx->sec->debug.dfx.recv_busy_cnt); + } + + + sk_req->base.complete(&sk_req->base, err); +} + +static void sec_aead_copy_iv(struct sec_ctx *ctx, struct sec_req *req) +{ + struct aead_request *aead_req = req->aead_req.aead_req; + struct sec_cipher_req *c_req = &req->c_req; + + memcpy(c_req->c_ivin, aead_req->iv, ctx->c_ctx.ivsize); +} + +static void sec_auth_bd_fill_ex(struct sec_auth_ctx *ctx, int dir, + struct sec_req *req, struct sec_sqe *sec_sqe) +{ + struct sec_aead_req *a_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + struct aead_request *aq = a_req->aead_req; + + sec_sqe->type2.a_key_addr = cpu_to_le64(ctx->a_key_dma); + + sec_sqe->type2.mac_key_alg = + cpu_to_le32(ctx->mac_len / SEC_SQE_LEN_RATE); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)((ctx->a_key_len) / + SEC_SQE_LEN_RATE) << SEC_AKEY_OFFSET); + + sec_sqe->type2.mac_key_alg |= + cpu_to_le32((u32)(ctx->a_alg) << SEC_AEAD_ALG_OFFSET); + + sec_sqe->type_cipher_auth |= SEC_AUTH_TYPE1 << SEC_AUTH_OFFSET; + + if (dir) + sec_sqe->sds_sa_type &= SEC_CIPHER_AUTH; + else + sec_sqe->sds_sa_type |= SEC_AUTH_CIPHER; + + sec_sqe->type2.alen_ivllen = cpu_to_le32(c_req->c_len + aq->assoclen); + + sec_sqe->type2.cipher_src_offset = cpu_to_le16((u16)aq->assoclen); + + sec_sqe->type2.mac_addr = cpu_to_le64(a_req->out_mac_dma); +} + +static int sec_aead_bd_fill(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + struct sec_sqe *sec_sqe = &req->sec_sqe; + int ret; + + ret = sec_skcipher_bd_fill(ctx, req); + if (unlikely(ret)) { + dev_err(ctx->dev, "skcipher bd fill is error!\n"); + return ret; + } + + sec_auth_bd_fill_ex(auth_ctx, req->c_req.encrypt, req, sec_sqe); + + return 0; +} + +static void sec_aead_callback(struct sec_ctx *c, struct sec_req *req, int err) +{ + struct aead_request *a_req = req->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + struct sec_aead_req *aead_req = &req->aead_req; + struct sec_cipher_req *c_req = &req->c_req; + size_t authsize = crypto_aead_authsize(tfm); + struct sec_qp_ctx *qp_ctx = req->qp_ctx; + struct aead_request *backlog_aead_req; + struct sec_req *backlog_req; + size_t sz; + + if (!err && c->c_ctx.c_mode == SEC_CMODE_CBC && c_req->encrypt) + sec_update_iv(req, SEC_AEAD); + + /* Copy output mac */ + if (!err && c_req->encrypt) { + struct scatterlist *sgl = a_req->dst; + + sz = sg_pcopy_from_buffer(sgl, sg_nents(sgl), + aead_req->out_mac, + authsize, a_req->cryptlen + + a_req->assoclen); + + if (unlikely(sz != authsize)) { + dev_err(c->dev, "copy out mac err!\n"); + err = -EINVAL; + } + } + + sec_free_req_id(req); + + while (1) { + backlog_req = sec_back_req_clear(c, qp_ctx); + if (!backlog_req) + break; + + backlog_aead_req = backlog_req->aead_req.aead_req; + backlog_aead_req->base.complete(&backlog_aead_req->base, + -EINPROGRESS); + atomic64_inc(&c->sec->debug.dfx.recv_busy_cnt); + } + + a_req->base.complete(&a_req->base, err); +} + +static void sec_request_uninit(struct sec_ctx *ctx, struct sec_req *req) +{ + sec_free_req_id(req); + sec_free_queue_id(ctx, req); +} + +static int sec_request_init(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_qp_ctx *qp_ctx; + int queue_id; + + /* To load balance */ + queue_id = sec_alloc_queue_id(ctx, req); + qp_ctx = &ctx->qp_ctx[queue_id]; + + req->req_id = sec_alloc_req_id(req, qp_ctx); + if (unlikely(req->req_id < 0)) { + sec_free_queue_id(ctx, req); + return req->req_id; + } + + return 0; +} + +static int sec_process(struct sec_ctx *ctx, struct sec_req *req) +{ + struct sec_cipher_req *c_req = &req->c_req; + int ret; + + ret = sec_request_init(ctx, req); + if (unlikely(ret)) + return ret; + + ret = sec_request_transfer(ctx, req); + if (unlikely(ret)) + goto err_uninit_req; + + /* Output IV as decrypto */ + if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) + sec_update_iv(req, ctx->alg_type); + + ret = ctx->req_op->bd_send(ctx, req); + if (unlikely((ret != -EBUSY && ret != -EINPROGRESS) || + (ret == -EBUSY && !(req->flag & CRYPTO_TFM_REQ_MAY_BACKLOG)))) { + dev_err_ratelimited(ctx->dev, "send sec request failed!\n"); + goto err_send_req; + } + + return ret; + +err_send_req: + /* As failing, restore the IV from user */ + if (ctx->c_ctx.c_mode == SEC_CMODE_CBC && !req->c_req.encrypt) { + if (ctx->alg_type == SEC_SKCIPHER) + memcpy(req->c_req.sk_req->iv, c_req->c_ivin, + ctx->c_ctx.ivsize); + else + memcpy(req->aead_req.aead_req->iv, c_req->c_ivin, + ctx->c_ctx.ivsize); + } + + sec_request_untransfer(ctx, req); +err_uninit_req: + sec_request_uninit(ctx, req); + + return ret; +} + +static const struct sec_req_op sec_skcipher_req_ops = { + .buf_map = sec_skcipher_sgl_map, + .buf_unmap = sec_skcipher_sgl_unmap, + .do_transfer = sec_skcipher_copy_iv, + .bd_fill = sec_skcipher_bd_fill, + .bd_send = sec_bd_send, + .callback = sec_skcipher_callback, + .process = sec_process, +}; + +static const struct sec_req_op sec_aead_req_ops = { + .buf_map = sec_aead_sgl_map, + .buf_unmap = sec_aead_sgl_unmap, + .do_transfer = sec_aead_copy_iv, + .bd_fill = sec_aead_bd_fill, + .bd_send = sec_bd_send, + .callback = sec_aead_callback, + .process = sec_process, +}; + +static int sec_skcipher_ctx_init(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + + ctx->req_op = &sec_skcipher_req_ops; + + return sec_skcipher_init(tfm); +} + +static void sec_skcipher_ctx_exit(struct crypto_skcipher *tfm) +{ + sec_skcipher_uninit(tfm); +} + +static int sec_aead_init(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + int ret; + + crypto_aead_set_reqsize(tfm, sizeof(struct sec_req)); + ctx->alg_type = SEC_AEAD; + ctx->c_ctx.ivsize = crypto_aead_ivsize(tfm); + if (ctx->c_ctx.ivsize > SEC_IV_SIZE) { + dev_err(ctx->dev, "get error aead iv size!\n"); + return -EINVAL; + } + + ctx->req_op = &sec_aead_req_ops; + ret = sec_ctx_base_init(ctx); + if (ret) + return ret; + + ret = sec_auth_init(ctx); + if (ret) + goto err_auth_init; + + ret = sec_cipher_init(ctx); + if (ret) + goto err_cipher_init; + + return ret; + +err_cipher_init: + sec_auth_uninit(ctx); +err_auth_init: + sec_ctx_base_uninit(ctx); + + return ret; +} + +static void sec_aead_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + sec_cipher_uninit(ctx); + sec_auth_uninit(ctx); + sec_ctx_base_uninit(ctx); +} + +static int sec_aead_ctx_init(struct crypto_aead *tfm, const char *hash_name) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + struct sec_auth_ctx *auth_ctx = &ctx->a_ctx; + int ret; + + ret = sec_aead_init(tfm); + if (ret) { + pr_err("hisi_sec2: aead init error!\n"); + return ret; + } + + auth_ctx->hash_tfm = crypto_alloc_shash(hash_name, 0, 0); + if (IS_ERR(auth_ctx->hash_tfm)) { + dev_err(ctx->dev, "aead alloc shash error!\n"); + sec_aead_exit(tfm); + return PTR_ERR(auth_ctx->hash_tfm); + } + + return 0; +} + +static void sec_aead_ctx_exit(struct crypto_aead *tfm) +{ + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + + crypto_free_shash(ctx->a_ctx.hash_tfm); + sec_aead_exit(tfm); +} + +static int sec_aead_sha1_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha1"); +} + +static int sec_aead_sha256_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha256"); +} + +static int sec_aead_sha512_ctx_init(struct crypto_aead *tfm) +{ + return sec_aead_ctx_init(tfm, "sha512"); +} + +static int sec_skcipher_param_check(struct sec_ctx *ctx, struct sec_req *sreq) +{ + struct skcipher_request *sk_req = sreq->c_req.sk_req; + struct device *dev = ctx->dev; + u8 c_alg = ctx->c_ctx.c_alg; + + if (unlikely(!sk_req->src || !sk_req->dst)) { + dev_err(dev, "skcipher input param error!\n"); + return -EINVAL; + } + sreq->c_req.c_len = sk_req->cryptlen; + + if (ctx->pbuf_supported && sk_req->cryptlen <= SEC_PBUF_SZ) + sreq->use_pbuf = true; + else + sreq->use_pbuf = false; + + if (c_alg == SEC_CALG_3DES) { + if (unlikely(sk_req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1))) { + dev_err(dev, "skcipher 3des input length error!\n"); + return -EINVAL; + } + return 0; + } else if (c_alg == SEC_CALG_AES || c_alg == SEC_CALG_SM4) { + if (unlikely(sk_req->cryptlen & (AES_BLOCK_SIZE - 1))) { + dev_err(dev, "skcipher aes input length error!\n"); + return -EINVAL; + } + return 0; + } + + dev_err(dev, "skcipher algorithm error!\n"); + return -EINVAL; +} + +static int sec_skcipher_crypto(struct skcipher_request *sk_req, bool encrypt) +{ + struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(sk_req); + struct sec_req *req = skcipher_request_ctx(sk_req); + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + if (!sk_req->cryptlen) + return 0; + + req->flag = sk_req->base.flags; + req->c_req.sk_req = sk_req; + req->c_req.encrypt = encrypt; + req->ctx = ctx; + + ret = sec_skcipher_param_check(ctx, req); + if (unlikely(ret)) + return -EINVAL; + + return ctx->req_op->process(ctx, req); +} + +static int sec_skcipher_encrypt(struct skcipher_request *sk_req) +{ + return sec_skcipher_crypto(sk_req, true); +} + +static int sec_skcipher_decrypt(struct skcipher_request *sk_req) +{ + return sec_skcipher_crypto(sk_req, false); +} + +#define SEC_SKCIPHER_GEN_ALG(sec_cra_name, sec_set_key, sec_min_key_size, \ + sec_max_key_size, ctx_init, ctx_exit, blk_size, iv_size)\ +{\ + .base = {\ + .cra_name = sec_cra_name,\ + .cra_driver_name = "hisi_sec_"sec_cra_name,\ + .cra_priority = SEC_PRIORITY,\ + .cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,\ + .cra_blocksize = blk_size,\ + .cra_ctxsize = sizeof(struct sec_ctx),\ + .cra_module = THIS_MODULE,\ + },\ + .init = ctx_init,\ + .exit = ctx_exit,\ + .setkey = sec_set_key,\ + .decrypt = sec_skcipher_decrypt,\ + .encrypt = sec_skcipher_encrypt,\ + .min_keysize = sec_min_key_size,\ + .max_keysize = sec_max_key_size,\ + .ivsize = iv_size,\ +}, + +#define SEC_SKCIPHER_ALG(name, key_func, min_key_size, \ + max_key_size, blk_size, iv_size) \ + SEC_SKCIPHER_GEN_ALG(name, key_func, min_key_size, max_key_size, \ + sec_skcipher_ctx_init, sec_skcipher_ctx_exit, blk_size, iv_size) + +static struct skcipher_alg sec_skciphers[] = { + SEC_SKCIPHER_ALG("ecb(aes)", sec_setkey_aes_ecb, + AES_MIN_KEY_SIZE, AES_MAX_KEY_SIZE, + AES_BLOCK_SIZE, 0) + + SEC_SKCIPHER_ALG("cbc(aes)", sec_setkey_aes_cbc, + AES_MIN_KEY_SIZE, AES_MAX_KEY_SIZE, + AES_BLOCK_SIZE, AES_BLOCK_SIZE) + + SEC_SKCIPHER_ALG("xts(aes)", sec_setkey_aes_xts, + SEC_XTS_MIN_KEY_SIZE, SEC_XTS_MAX_KEY_SIZE, + AES_BLOCK_SIZE, AES_BLOCK_SIZE) + + SEC_SKCIPHER_ALG("ecb(des3_ede)", sec_setkey_3des_ecb, + SEC_DES3_3KEY_SIZE, SEC_DES3_3KEY_SIZE, + DES3_EDE_BLOCK_SIZE, 0) + + SEC_SKCIPHER_ALG("cbc(des3_ede)", sec_setkey_3des_cbc, + SEC_DES3_3KEY_SIZE, SEC_DES3_3KEY_SIZE, + DES3_EDE_BLOCK_SIZE, DES3_EDE_BLOCK_SIZE) + + SEC_SKCIPHER_ALG("xts(sm4)", sec_setkey_sm4_xts, + SEC_XTS_MIN_KEY_SIZE, SEC_XTS_MIN_KEY_SIZE, + AES_BLOCK_SIZE, AES_BLOCK_SIZE) + + SEC_SKCIPHER_ALG("cbc(sm4)", sec_setkey_sm4_cbc, + AES_MIN_KEY_SIZE, AES_MIN_KEY_SIZE, + AES_BLOCK_SIZE, AES_BLOCK_SIZE) +}; + +static int sec_aead_param_check(struct sec_ctx *ctx, struct sec_req *sreq) +{ + struct aead_request *req = sreq->aead_req.aead_req; + struct crypto_aead *tfm = crypto_aead_reqtfm(req); + size_t authsize = crypto_aead_authsize(tfm); + struct device *dev = ctx->dev; + u8 c_alg = ctx->c_ctx.c_alg; + + if (unlikely(!req->src || !req->dst || !req->cryptlen || + req->assoclen > SEC_MAX_AAD_LEN)) { + dev_err(dev, "aead input param error!\n"); + return -EINVAL; + } + + if (ctx->pbuf_supported && (req->cryptlen + req->assoclen) <= + SEC_PBUF_SZ) + sreq->use_pbuf = true; + else + sreq->use_pbuf = false; + + /* Support AES only */ + if (unlikely(c_alg != SEC_CALG_AES)) { + dev_err(dev, "aead crypto alg error!\n"); + return -EINVAL; + + } + if (sreq->c_req.encrypt) + sreq->c_req.c_len = req->cryptlen; + else + sreq->c_req.c_len = req->cryptlen - authsize; + + if (unlikely(sreq->c_req.c_len & (AES_BLOCK_SIZE - 1))) { + dev_err(dev, "aead crypto length error!\n"); + return -EINVAL; + } + + return 0; +} + +static int sec_aead_crypto(struct aead_request *a_req, bool encrypt) +{ + struct crypto_aead *tfm = crypto_aead_reqtfm(a_req); + struct sec_req *req = aead_request_ctx(a_req); + struct sec_ctx *ctx = crypto_aead_ctx(tfm); + int ret; + + req->flag = a_req->base.flags; + req->aead_req.aead_req = a_req; + req->c_req.encrypt = encrypt; + req->ctx = ctx; + + ret = sec_aead_param_check(ctx, req); + if (unlikely(ret)) + return -EINVAL; + + return ctx->req_op->process(ctx, req); +} + +static int sec_aead_encrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, true); +} + +static int sec_aead_decrypt(struct aead_request *a_req) +{ + return sec_aead_crypto(a_req, false); +} + +#define SEC_AEAD_GEN_ALG(sec_cra_name, sec_set_key, ctx_init,\ + ctx_exit, blk_size, iv_size, max_authsize)\ +{\ + .base = {\ + .cra_name = sec_cra_name,\ + .cra_driver_name = "hisi_sec_"sec_cra_name,\ + .cra_priority = SEC_PRIORITY,\ + .cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY,\ + .cra_blocksize = blk_size,\ + .cra_ctxsize = sizeof(struct sec_ctx),\ + .cra_module = THIS_MODULE,\ + },\ + .init = ctx_init,\ + .exit = ctx_exit,\ + .setkey = sec_set_key,\ + .decrypt = sec_aead_decrypt,\ + .encrypt = sec_aead_encrypt,\ + .ivsize = iv_size,\ + .maxauthsize = max_authsize,\ +} + +#define SEC_AEAD_ALG(algname, keyfunc, aead_init, blksize, ivsize, authsize)\ + SEC_AEAD_GEN_ALG(algname, keyfunc, aead_init,\ + sec_aead_ctx_exit, blksize, ivsize, authsize) + +static struct aead_alg sec_aeads[] = { + SEC_AEAD_ALG("authenc(hmac(sha1),cbc(aes))", + sec_setkey_aes_cbc_sha1, sec_aead_sha1_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA1_DIGEST_SIZE), + + SEC_AEAD_ALG("authenc(hmac(sha256),cbc(aes))", + sec_setkey_aes_cbc_sha256, sec_aead_sha256_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA256_DIGEST_SIZE), + + SEC_AEAD_ALG("authenc(hmac(sha512),cbc(aes))", + sec_setkey_aes_cbc_sha512, sec_aead_sha512_ctx_init, + AES_BLOCK_SIZE, AES_BLOCK_SIZE, SHA512_DIGEST_SIZE), +}; + +int sec_register_to_crypto(void) +{ + int ret; + + /* To avoid repeat register */ + ret = crypto_register_skciphers(sec_skciphers, + ARRAY_SIZE(sec_skciphers)); + if (ret) + return ret; + + ret = crypto_register_aeads(sec_aeads, ARRAY_SIZE(sec_aeads)); + if (ret) + crypto_unregister_skciphers(sec_skciphers, + ARRAY_SIZE(sec_skciphers)); + return ret; +} + +void sec_unregister_from_crypto(void) +{ + crypto_unregister_skciphers(sec_skciphers, + ARRAY_SIZE(sec_skciphers)); + crypto_unregister_aeads(sec_aeads, ARRAY_SIZE(sec_aeads)); +} |