From 473a0f9662d495b585fa5ebe5fe72ec54b6cb82c Mon Sep 17 00:00:00 2001 From: Zaibo Xu Date: Sat, 11 Jan 2020 10:41:55 +0800 Subject: crypto: hisilicon - redefine skcipher initiation 1.Define base initiation of QP for context which can be reused. 2.Define cipher initiation for other algorithms. Signed-off-by: Zaibo Xu Signed-off-by: Herbert Xu --- drivers/crypto/hisilicon/sec2/sec_crypto.c | 96 +++++++++++++++++++----------- 1 file changed, 61 insertions(+), 35 deletions(-) (limited to 'drivers') diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c index 521bab86de39..f919deaba3ac 100644 --- a/drivers/crypto/hisilicon/sec2/sec_crypto.c +++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c @@ -273,25 +273,17 @@ static void sec_release_qp_ctx(struct sec_ctx *ctx, hisi_qm_release_qp(qp_ctx->qp); } -static int sec_skcipher_init(struct crypto_skcipher *tfm) +static int sec_ctx_base_init(struct sec_ctx *ctx) { - struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); - struct sec_cipher_ctx *c_ctx; struct sec_dev *sec; - struct device *dev; - struct hisi_qm *qm; int i, ret; - crypto_skcipher_set_reqsize(tfm, sizeof(struct sec_req)); - sec = sec_find_device(cpu_to_node(smp_processor_id())); if (!sec) { pr_err("Can not find proper Hisilicon SEC device!\n"); return -ENODEV; } ctx->sec = sec; - qm = &sec->qm; - dev = &qm->pdev->dev; ctx->hlf_q_num = sec->ctx_q_num >> 1; /* Half of queue depth is taken as fake requests limit in the queue. */ @@ -302,27 +294,12 @@ static int sec_skcipher_init(struct crypto_skcipher *tfm) return -ENOMEM; for (i = 0; i < sec->ctx_q_num; i++) { - ret = sec_create_qp_ctx(qm, ctx, i, 0); + ret = sec_create_qp_ctx(&sec->qm, ctx, i, 0); if (ret) goto err_sec_release_qp_ctx; } - c_ctx = &ctx->c_ctx; - c_ctx->ivsize = crypto_skcipher_ivsize(tfm); - if (c_ctx->ivsize > SEC_IV_SIZE) { - dev_err(dev, "get error iv size!\n"); - ret = -EINVAL; - goto err_sec_release_qp_ctx; - } - c_ctx->c_key = dma_alloc_coherent(dev, SEC_MAX_KEY_SIZE, - &c_ctx->c_key_dma, GFP_KERNEL); - if (!c_ctx->c_key) { - ret = -ENOMEM; - 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]); @@ -331,17 +308,9 @@ err_sec_release_qp_ctx: return ret; } -static void sec_skcipher_uninit(struct crypto_skcipher *tfm) +static void sec_ctx_base_uninit(struct sec_ctx *ctx) { - struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); - struct sec_cipher_ctx *c_ctx = &ctx->c_ctx; - int i = 0; - - if (c_ctx->c_key) { - dma_free_coherent(SEC_CTX_DEV(ctx), SEC_MAX_KEY_SIZE, - c_ctx->c_key, c_ctx->c_key_dma); - c_ctx->c_key = NULL; - } + int i; for (i = 0; i < ctx->sec->ctx_q_num; i++) sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]); @@ -349,6 +318,63 @@ static void sec_skcipher_uninit(struct crypto_skcipher *tfm) 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(SEC_CTX_DEV(ctx), 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(SEC_CTX_DEV(ctx), SEC_MAX_KEY_SIZE, + c_ctx->c_key, c_ctx->c_key_dma); +} + +static int sec_skcipher_init(struct crypto_skcipher *tfm) +{ + struct sec_ctx *ctx = crypto_skcipher_ctx(tfm); + int ret; + + ctx = crypto_skcipher_ctx(tfm); + 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) { + dev_err(SEC_CTX_DEV(ctx), "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) -- cgit v1.2.3