From patchwork Mon May 15 12:53:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: JiaJie Ho X-Patchwork-Id: 94121 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp6897945vqo; Mon, 15 May 2023 05:58:16 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ7v5U82sTcG/KyO00zWtquNDoU53jrtMprPgwq/4yG9Jo3GAj4wmisid9HjD0leGny7M3i5 X-Received: by 2002:a17:90a:bb96:b0:24e:1a7:9976 with SMTP id v22-20020a17090abb9600b0024e01a79976mr34164763pjr.10.1684155496101; Mon, 15 May 2023 05:58:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1684155496; cv=none; d=google.com; s=arc-20160816; b=iN6Jt6Gt06hK4ciK6h37N1iIZu+k2rpPmq0q5dbXXmVZf+4Gr2gEweY5EaUeVlq40s 7N+EwIVZ2KpooH/4hrE8niD2qTgLs2ZZ6t4CHSIL8P8FOCZJgCseQiUe0KWMotno+8FR sKBRMuv3R9+KXxrbJUe3k1imU17h1rOCz/643zpHZDhnOJEfvzAUFVqPDb9NfUhAzPbB x6bWnHT3DPUZ7vKkxjD4jA1icCZs7J0WOIZOote7Pi8sliOSAD+10HzlKeujw8L+A3rV jH5q8lCMAKw78/S4Nx0wToMooiapaKrbbyYbNluKHQ7yqEIH00RgWlA1RWj+94hYWMvK nt7g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=ybOL9Pf76N0K9LD8jL8hyiJvLaizFNC7r7GmEE8fRPg=; b=DXdbF6YIn7lkmAqY323cQfRXk1SLGE+Wbcb3MGM6PGQ1wIbNp8LzyPtibHmvMYUcvm RFXGMtYlonsTmjeET+z+mwOokAMgEeaxBcJY7+k5I4AO5GAbegvB++noCI4m4vlbGuQo LGfK/LCYjWnFtfJ4A+9ggp4+WjOidueBx0iDAZqY5f4CYI68s2rL5t8mKVu7bhFM7wa1 URaEYXSW57v/WKnN+VKPzDEeh8Y8jqGfpZTia8gz7OtYcl6Dg2x2maeUMLFk6mehBN7S yixkOK7ix1Wlelp4TTSWbnUMPo/nohLWX+3oezS2DWtK9tWTPycK/Tq6DVWh2o/MfTGg Duaw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id 29-20020a17090a19dd00b00252b14e5ce4si8494106pjj.190.2023.05.15.05.58.03; Mon, 15 May 2023 05:58:16 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242051AbjEOMzC convert rfc822-to-8bit (ORCPT + 99 others); Mon, 15 May 2023 08:55:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242040AbjEOMyk (ORCPT ); Mon, 15 May 2023 08:54:40 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7F7019A6; Mon, 15 May 2023 05:54:36 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 6FDC824E176; Mon, 15 May 2023 20:54:35 +0800 (CST) Received: from EXMBX168.cuchost.com (172.16.6.78) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 15 May 2023 20:54:35 +0800 Received: from ubuntu.localdomain (161.142.156.10) by EXMBX168.cuchost.com (172.16.6.78) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 15 May 2023 20:54:28 +0800 From: Jia Jie Ho To: Herbert Xu , "David S . Miller" , Rob Herring , Krzysztof Kozlowski , Emil Renner Berthing , Conor Dooley CC: , , , Subject: [PATCH v8 4/4] crypto: starfive - Add hash and HMAC support Date: Mon, 15 May 2023 20:53:55 +0800 Message-ID: <20230515125355.624250-5-jiajie.ho@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230515125355.624250-1-jiajie.ho@starfivetech.com> References: <20230515125355.624250-1-jiajie.ho@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [161.142.156.10] X-ClientProxiedBy: EXCAS062.cuchost.com (172.16.6.22) To EXMBX168.cuchost.com (172.16.6.78) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1765965033460420399?= X-GMAIL-MSGID: =?utf-8?q?1765965033460420399?= Adding hash/HMAC support for SHA-2 and SM3 to StarFive cryptographic module. Co-developed-by: Huan Feng Signed-off-by: Huan Feng Signed-off-by: Jia Jie Ho --- drivers/crypto/starfive/Kconfig | 4 + drivers/crypto/starfive/Makefile | 2 +- drivers/crypto/starfive/jh7110-cryp.c | 39 ++ drivers/crypto/starfive/jh7110-cryp.h | 70 +- drivers/crypto/starfive/jh7110-hash.c | 892 ++++++++++++++++++++++++++ 5 files changed, 1003 insertions(+), 4 deletions(-) create mode 100644 drivers/crypto/starfive/jh7110-hash.c diff --git a/drivers/crypto/starfive/Kconfig b/drivers/crypto/starfive/Kconfig index 7a5a5d9f90ed..be58d1473523 100644 --- a/drivers/crypto/starfive/Kconfig +++ b/drivers/crypto/starfive/Kconfig @@ -6,6 +6,10 @@ config CRYPTO_DEV_JH7110 tristate "StarFive JH7110 cryptographic engine driver" depends on SOC_STARFIVE || COMPILE_TEST select CRYPTO_ENGINE + select CRYPTO_HMAC + select CRYPTO_SHA256 + select CRYPTO_SHA512 + select CRYPTO_SM3_GENERIC select ARM_AMBA select DMADEVICES select AMBA_PL08X diff --git a/drivers/crypto/starfive/Makefile b/drivers/crypto/starfive/Makefile index 41221acaee39..2af49062e36d 100644 --- a/drivers/crypto/starfive/Makefile +++ b/drivers/crypto/starfive/Makefile @@ -1,4 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_CRYPTO_DEV_JH7110) += jh7110-crypto.o -jh7110-crypto-objs := jh7110-cryp.o +jh7110-crypto-objs := jh7110-cryp.o jh7110-hash.o diff --git a/drivers/crypto/starfive/jh7110-cryp.c b/drivers/crypto/starfive/jh7110-cryp.c index 4b2505c23168..279b19f51cb4 100644 --- a/drivers/crypto/starfive/jh7110-cryp.c +++ b/drivers/crypto/starfive/jh7110-cryp.c @@ -79,10 +79,25 @@ static void starfive_dma_cleanup(struct starfive_cryp_dev *cryp) dma_release_channel(cryp->rx); } +static irqreturn_t starfive_cryp_irq(int irq, void *priv) +{ + u32 status; + struct starfive_cryp_dev *cryp = (struct starfive_cryp_dev *)priv; + + status = readl(cryp->base + STARFIVE_IE_FLAG_OFFSET); + if (status & STARFIVE_IE_FLAG_HASH_DONE) { + writel(STARFIVE_IE_MASK_HASH_DONE, cryp->base + STARFIVE_IE_MASK_OFFSET); + tasklet_schedule(&cryp->hash_done); + } + + return IRQ_HANDLED; +} + static int starfive_cryp_probe(struct platform_device *pdev) { struct starfive_cryp_dev *cryp; struct resource *res; + int irq; int ret; cryp = devm_kzalloc(&pdev->dev, sizeof(*cryp), GFP_KERNEL); @@ -97,6 +112,8 @@ static int starfive_cryp_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(cryp->base), "Error remapping memory for platform device\n"); + tasklet_init(&cryp->hash_done, starfive_hash_done_task, (unsigned long)cryp); + cryp->phys_base = res->start; cryp->dma_maxburst = 32; @@ -115,6 +132,16 @@ static int starfive_cryp_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, PTR_ERR(cryp->rst), "Error getting hardware reset line\n"); + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ret = devm_request_irq(&pdev->dev, irq, starfive_cryp_irq, 0, pdev->name, + (void *)cryp); + if (ret) + return dev_err_probe(&pdev->dev, irq, + "Failed to register interrupt handler\n"); + clk_prepare_enable(cryp->hclk); clk_prepare_enable(cryp->ahb); reset_control_deassert(cryp->rst); @@ -142,8 +169,14 @@ static int starfive_cryp_probe(struct platform_device *pdev) if (ret) goto err_engine_start; + ret = starfive_hash_register_algs(); + if (ret) + goto err_algs_hash; + return 0; +err_algs_hash: + crypto_engine_stop(cryp->engine); err_engine_start: crypto_engine_exit(cryp->engine); err_engine: @@ -156,6 +189,8 @@ static int starfive_cryp_probe(struct platform_device *pdev) clk_disable_unprepare(cryp->hclk); clk_disable_unprepare(cryp->ahb); reset_control_assert(cryp->rst); + + tasklet_kill(&cryp->hash_done); err_probe_defer: return ret; } @@ -164,6 +199,10 @@ static int starfive_cryp_remove(struct platform_device *pdev) { struct starfive_cryp_dev *cryp = platform_get_drvdata(pdev); + starfive_hash_unregister_algs(); + + tasklet_kill(&cryp->hash_done); + crypto_engine_stop(cryp->engine); crypto_engine_exit(cryp->engine); diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h index 393efd38b098..021d6e24bc86 100644 --- a/drivers/crypto/starfive/jh7110-cryp.h +++ b/drivers/crypto/starfive/jh7110-cryp.h @@ -7,6 +7,8 @@ #include #include +#include +#include #define STARFIVE_ALG_CR_OFFSET 0x0 #define STARFIVE_ALG_FIFO_OFFSET 0x4 @@ -15,7 +17,43 @@ #define STARFIVE_DMA_IN_LEN_OFFSET 0x10 #define STARFIVE_DMA_OUT_LEN_OFFSET 0x14 +#define STARFIVE_IE_MASK_HASH_DONE 0x4 +#define STARFIVE_IE_FLAG_HASH_DONE 0x4 + #define STARFIVE_MSG_BUFFER_SIZE SZ_16K +#define MAX_KEY_SIZE SHA512_BLOCK_SIZE + +union starfive_hash_csr { + u32 v; + struct { + u32 start :1; + u32 reset :1; + u32 ie :1; + u32 firstb :1; +#define STARFIVE_HASH_SM3 0x0 +#define STARFIVE_HASH_SHA224 0x3 +#define STARFIVE_HASH_SHA256 0x4 +#define STARFIVE_HASH_SHA384 0x5 +#define STARFIVE_HASH_SHA512 0x6 +#define STARFIVE_HASH_MODE_MASK 0x7 + u32 mode :3; + u32 rsvd_1 :1; + u32 final :1; + u32 rsvd_2 :2; +#define STARFIVE_HASH_HMAC_FLAGS 0x800 + u32 hmac :1; + u32 rsvd_3 :1; +#define STARFIVE_HASH_KEY_DONE BIT(13) + u32 key_done :1; + u32 key_flag :1; + u32 hmac_done :1; +#define STARFIVE_HASH_BUSY BIT(16) + u32 busy :1; + u32 hashdone :1; + u32 rsvd_4 :14; + }; +}; + union starfive_alg_cr { u32 v; @@ -34,12 +72,18 @@ union starfive_alg_cr { struct starfive_cryp_ctx { struct crypto_engine_ctx enginectx; struct starfive_cryp_dev *cryp; + struct starfive_cryp_request_ctx *rctx; + + unsigned int hash_mode; + u8 key[MAX_KEY_SIZE]; + int keylen; + bool is_hmac; + struct crypto_ahash *ahash_fbk; }; struct starfive_cryp_dev { struct list_head list; struct device *dev; - struct clk *hclk; struct clk *ahb; struct reset_control *rst; @@ -52,12 +96,32 @@ struct starfive_cryp_dev { struct dma_chan *rx; struct dma_slave_config cfg_in; struct dma_slave_config cfg_out; - struct crypto_engine *engine; - + struct tasklet_struct hash_done; + int err; union starfive_alg_cr alg_cr; + union { + struct ahash_request *hreq; + } req; +}; + +struct starfive_cryp_request_ctx { + union { + union starfive_hash_csr hash; + } csr; + + struct scatterlist *in_sg; + struct ahash_request ahash_fbk_req; + size_t total; + unsigned int blksize; + unsigned int digsize; + unsigned long in_sg_len; }; struct starfive_cryp_dev *starfive_cryp_find_dev(struct starfive_cryp_ctx *ctx); +int starfive_hash_register_algs(void); +void starfive_hash_unregister_algs(void); + +void starfive_hash_done_task(unsigned long param); #endif diff --git a/drivers/crypto/starfive/jh7110-hash.c b/drivers/crypto/starfive/jh7110-hash.c new file mode 100644 index 000000000000..3801e44f2f33 --- /dev/null +++ b/drivers/crypto/starfive/jh7110-hash.c @@ -0,0 +1,892 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Hash function and HMAC support for StarFive driver + * + * Copyright (c) 2022 StarFive Technology + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include "jh7110-cryp.h" + +#define STARFIVE_HASH_REGS_OFFSET 0x300 +#define STARFIVE_HASH_SHACSR (STARFIVE_HASH_REGS_OFFSET + 0x0) +#define STARFIVE_HASH_SHAWDR (STARFIVE_HASH_REGS_OFFSET + 0x4) +#define STARFIVE_HASH_SHARDR (STARFIVE_HASH_REGS_OFFSET + 0x8) +#define STARFIVE_HASH_SHAWSR (STARFIVE_HASH_REGS_OFFSET + 0xC) +#define STARFIVE_HASH_SHAWLEN3 (STARFIVE_HASH_REGS_OFFSET + 0x10) +#define STARFIVE_HASH_SHAWLEN2 (STARFIVE_HASH_REGS_OFFSET + 0x14) +#define STARFIVE_HASH_SHAWLEN1 (STARFIVE_HASH_REGS_OFFSET + 0x18) +#define STARFIVE_HASH_SHAWLEN0 (STARFIVE_HASH_REGS_OFFSET + 0x1C) +#define STARFIVE_HASH_SHAWKR (STARFIVE_HASH_REGS_OFFSET + 0x20) +#define STARFIVE_HASH_SHAWKLEN (STARFIVE_HASH_REGS_OFFSET + 0x24) + +#define STARFIVE_HASH_BUFLEN SHA512_BLOCK_SIZE + +static inline int starfive_hash_wait_busy(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_dev *cryp = ctx->cryp; + u32 status; + + return readl_relaxed_poll_timeout(cryp->base + STARFIVE_HASH_SHACSR, status, + !(status & STARFIVE_HASH_BUSY), 10, 100000); +} + +static inline int starfive_hash_wait_key_done(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_dev *cryp = ctx->cryp; + u32 status; + + return readl_relaxed_poll_timeout(cryp->base + STARFIVE_HASH_SHACSR, status, + (status & STARFIVE_HASH_KEY_DONE), 10, 100000); +} + +static int starfive_hash_hmac_key(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct starfive_cryp_dev *cryp = ctx->cryp; + int klen = ctx->keylen, loop; + unsigned int *key = (unsigned int *)ctx->key; + unsigned char *cl; + + writel(ctx->keylen, cryp->base + STARFIVE_HASH_SHAWKLEN); + + rctx->csr.hash.hmac = 1; + rctx->csr.hash.key_flag = 1; + + writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR); + + for (loop = 0; loop < klen / sizeof(unsigned int); loop++, key++) + writel(*key, cryp->base + STARFIVE_HASH_SHAWKR); + + if (klen & 0x3) { + cl = (unsigned char *)key; + for (loop = 0; loop < (klen & 0x3); loop++, cl++) + writeb(*cl, cryp->base + STARFIVE_HASH_SHAWKR); + } + + if (starfive_hash_wait_key_done(ctx)) + return dev_err_probe(cryp->dev, -ETIMEDOUT, "starfive_hash_wait_key_done error\n"); + + return 0; +} + +static void starfive_hash_start(void *param) +{ + struct starfive_cryp_ctx *ctx = param; + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct starfive_cryp_dev *cryp = ctx->cryp; + union starfive_alg_cr alg_cr; + union starfive_hash_csr csr; + + dma_unmap_sg(cryp->dev, rctx->in_sg, rctx->in_sg_len, DMA_TO_DEVICE); + + alg_cr.v = 0; + alg_cr.clear = 1; + + writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET); + + csr.v = readl(cryp->base + STARFIVE_HASH_SHACSR); + csr.firstb = 0; + csr.final = 1; + + writel(~STARFIVE_IE_MASK_HASH_DONE, cryp->base + STARFIVE_IE_MASK_OFFSET); + writel(csr.v, cryp->base + STARFIVE_HASH_SHACSR); +} + +static int starfive_hash_xmit_dma(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct starfive_cryp_dev *cryp = ctx->cryp; + struct dma_async_tx_descriptor *in_desc; + union starfive_alg_cr alg_cr; + int total_len; + int ret; + + if (!rctx->total) { + starfive_hash_start(ctx); + return 0; + } + + writel(rctx->total, cryp->base + STARFIVE_DMA_IN_LEN_OFFSET); + + total_len = rctx->total; + total_len = (total_len & 0x3) ? (((total_len >> 2) + 1) << 2) : total_len; + sg_dma_len(rctx->in_sg) = total_len; + + alg_cr.v = 0; + alg_cr.start = 1; + alg_cr.hash_dma_en = 1; + + writel(alg_cr.v, cryp->base + STARFIVE_ALG_CR_OFFSET); + + ret = dma_map_sg(cryp->dev, rctx->in_sg, rctx->in_sg_len, DMA_TO_DEVICE); + if (!ret) + return dev_err_probe(cryp->dev, -EINVAL, "dma_map_sg() error\n"); + + cryp->cfg_in.direction = DMA_MEM_TO_DEV; + cryp->cfg_in.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + cryp->cfg_in.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + cryp->cfg_in.src_maxburst = cryp->dma_maxburst; + cryp->cfg_in.dst_maxburst = cryp->dma_maxburst; + cryp->cfg_in.dst_addr = cryp->phys_base + STARFIVE_ALG_FIFO_OFFSET; + + dmaengine_slave_config(cryp->tx, &cryp->cfg_in); + + in_desc = dmaengine_prep_slave_sg(cryp->tx, rctx->in_sg, + ret, DMA_MEM_TO_DEV, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + + if (!in_desc) + return -EINVAL; + + in_desc->callback = starfive_hash_start; + in_desc->callback_param = ctx; + + dmaengine_submit(in_desc); + dma_async_issue_pending(cryp->tx); + + return 0; +} + +static int starfive_hash_xmit(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_request_ctx *rctx = ctx->rctx; + struct starfive_cryp_dev *cryp = ctx->cryp; + int ret = 0; + + rctx->csr.hash.v = 0; + rctx->csr.hash.reset = 1; + writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR); + + if (starfive_hash_wait_busy(ctx)) + return dev_err_probe(cryp->dev, -ETIMEDOUT, "Error resetting engine.\n"); + + rctx->csr.hash.v = 0; + rctx->csr.hash.mode = ctx->hash_mode; + rctx->csr.hash.ie = 1; + + if (ctx->is_hmac) { + ret = starfive_hash_hmac_key(ctx); + if (ret) + return ret; + } else { + rctx->csr.hash.start = 1; + rctx->csr.hash.firstb = 1; + writel(rctx->csr.hash.v, cryp->base + STARFIVE_HASH_SHACSR); + } + + return starfive_hash_xmit_dma(ctx); +} + +static int starfive_hash_copy_hash(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); + int count, *data; + int mlen; + + if (!req->result) + return 0; + + mlen = rctx->digsize / sizeof(u32); + data = (u32 *)req->result; + + for (count = 0; count < mlen; count++) + data[count] = readl(ctx->cryp->base + STARFIVE_HASH_SHARDR); + + return 0; +} + +void starfive_hash_done_task(unsigned long param) +{ + struct starfive_cryp_dev *cryp = (struct starfive_cryp_dev *)param; + int err = cryp->err; + + if (!err) + err = starfive_hash_copy_hash(cryp->req.hreq); + + crypto_finalize_hash_request(cryp->engine, cryp->req.hreq, err); +} + +static int starfive_hash_check_aligned(struct scatterlist *sg, size_t total, size_t align) +{ + int len = 0; + + if (!total) + return 0; + + if (!IS_ALIGNED(total, align)) + return -EINVAL; + + while (sg) { + if (!IS_ALIGNED(sg->offset, sizeof(u32))) + return -EINVAL; + + if (!IS_ALIGNED(sg->length, align)) + return -EINVAL; + + len += sg->length; + sg = sg_next(sg); + } + + if (len != total) + return -EINVAL; + + return 0; +} + +static int starfive_hash_one_request(struct crypto_engine *engine, void *areq) +{ + struct ahash_request *req = container_of(areq, struct ahash_request, + base); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); + struct starfive_cryp_dev *cryp = ctx->cryp; + + if (!cryp) + return -ENODEV; + + return starfive_hash_xmit(ctx); +} + +static int starfive_hash_init(struct ahash_request *req) +{ + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); + + return crypto_ahash_init(&rctx->ahash_fbk_req); +} + +static int starfive_hash_update(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); + + return crypto_ahash_update(&rctx->ahash_fbk_req); +} + +static int starfive_hash_final(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); + + return crypto_ahash_final(&rctx->ahash_fbk_req); +} + +static int starfive_hash_finup(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); + + return crypto_ahash_finup(&rctx->ahash_fbk_req); +} + +static int starfive_hash_digest_fb(struct ahash_request *req) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, req->base.flags, + req->base.complete, req->base.data); + + ahash_request_set_crypt(&rctx->ahash_fbk_req, req->src, + req->result, req->nbytes); + + return crypto_ahash_digest(&rctx->ahash_fbk_req); +} + +static int starfive_hash_digest(struct ahash_request *req) +{ + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct starfive_cryp_dev *cryp = ctx->cryp; + + memset(rctx, 0, sizeof(struct starfive_cryp_request_ctx)); + + cryp->req.hreq = req; + rctx->total = req->nbytes; + rctx->in_sg = req->src; + rctx->blksize = crypto_tfm_alg_blocksize(crypto_ahash_tfm(tfm)); + rctx->digsize = crypto_ahash_digestsize(tfm); + rctx->in_sg_len = sg_nents_for_len(rctx->in_sg, rctx->total); + ctx->rctx = rctx; + + if (starfive_hash_check_aligned(rctx->in_sg, rctx->total, rctx->blksize)) + return starfive_hash_digest_fb(req); + + return crypto_transfer_hash_request_to_engine(cryp->engine, req); +} + +static int starfive_hash_export(struct ahash_request *req, void *out) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + return crypto_ahash_export(&rctx->ahash_fbk_req, out); +} + +static int starfive_hash_import(struct ahash_request *req, const void *in) +{ + struct starfive_cryp_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(tfm); + + ahash_request_set_tfm(&rctx->ahash_fbk_req, ctx->ahash_fbk); + ahash_request_set_callback(&rctx->ahash_fbk_req, + req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP, + req->base.complete, req->base.data); + + return crypto_ahash_import(&rctx->ahash_fbk_req, in); +} + +static int starfive_hash_init_tfm(struct crypto_ahash *hash, + const char *alg_name, + unsigned int mode) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->cryp = starfive_cryp_find_dev(ctx); + + if (!ctx->cryp) + return -ENODEV; + + ctx->ahash_fbk = crypto_alloc_ahash(alg_name, 0, + CRYPTO_ALG_NEED_FALLBACK); + + if (IS_ERR(ctx->ahash_fbk)) + return dev_err_probe(ctx->cryp->dev, PTR_ERR(ctx->ahash_fbk), + "starfive_hash: Could not load fallback driver.\n"); + + crypto_ahash_set_statesize(hash, crypto_ahash_statesize(ctx->ahash_fbk)); + crypto_ahash_set_reqsize(hash, sizeof(struct starfive_cryp_request_ctx) + + crypto_ahash_reqsize(ctx->ahash_fbk)); + + ctx->keylen = 0; + ctx->hash_mode = mode; + + ctx->enginectx.op.do_one_request = starfive_hash_one_request; + ctx->enginectx.op.prepare_request = NULL; + ctx->enginectx.op.unprepare_request = NULL; + + return 0; +} + +static void starfive_hash_exit_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + crypto_free_ahash(ctx->ahash_fbk); + + ctx->ahash_fbk = NULL; + ctx->enginectx.op.do_one_request = NULL; + ctx->enginectx.op.prepare_request = NULL; + ctx->enginectx.op.unprepare_request = NULL; +} + +static int starfive_hash_long_setkey(struct starfive_cryp_ctx *ctx, + const u8 *key, unsigned int keylen, + const char *alg_name) +{ + struct crypto_wait wait; + struct ahash_request *req; + struct scatterlist sg; + struct crypto_ahash *ahash_tfm; + u8 *buf; + int ret; + + ahash_tfm = crypto_alloc_ahash(alg_name, 0, 0); + if (IS_ERR(ahash_tfm)) + return PTR_ERR(ahash_tfm); + + req = ahash_request_alloc(ahash_tfm, GFP_KERNEL); + if (!req) { + ret = -ENOMEM; + goto err_free_ahash; + } + + crypto_init_wait(&wait); + ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_BACKLOG, + crypto_req_done, &wait); + crypto_ahash_clear_flags(ahash_tfm, ~0); + + buf = kzalloc(keylen + STARFIVE_HASH_BUFLEN, GFP_KERNEL); + if (!buf) { + ret = -ENOMEM; + goto err_free_req; + } + + memcpy(buf, key, keylen); + sg_init_one(&sg, buf, keylen); + ahash_request_set_crypt(req, &sg, ctx->key, keylen); + + ret = crypto_wait_req(crypto_ahash_digest(req), &wait); + + kfree(buf); +err_free_req: + ahash_request_free(req); +err_free_ahash: + crypto_free_ahash(ahash_tfm); + return ret; +} + +static int starfive_hash_setkey(struct crypto_ahash *hash, + const u8 *key, unsigned int keylen) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + unsigned int digestsize = crypto_ahash_digestsize(hash); + unsigned int blocksize = crypto_ahash_blocksize(hash); + const char *alg_name; + + crypto_ahash_setkey(ctx->ahash_fbk, key, keylen); + + if (keylen <= blocksize) { + memcpy(ctx->key, key, keylen); + ctx->keylen = keylen; + return 0; + } + + ctx->keylen = digestsize; + + switch (digestsize) { + case SHA224_DIGEST_SIZE: + alg_name = "sha224-starfive"; + break; + case SHA256_DIGEST_SIZE: + if (ctx->hash_mode == STARFIVE_HASH_SM3) + alg_name = "sm3-starfive"; + else + alg_name = "sha256-starfive"; + break; + case SHA384_DIGEST_SIZE: + alg_name = "sha384-starfive"; + break; + case SHA512_DIGEST_SIZE: + alg_name = "sha512-starfive"; + break; + default: + return -EINVAL; + } + + return starfive_hash_long_setkey(ctx, key, keylen, alg_name); +} + +static int starfive_sha224_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sha224-generic", + STARFIVE_HASH_SHA224); +} + +static int starfive_sha256_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sha256-generic", + STARFIVE_HASH_SHA256); +} + +static int starfive_sha384_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sha384-generic", + STARFIVE_HASH_SHA384); +} + +static int starfive_sha512_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sha512-generic", + STARFIVE_HASH_SHA512); +} + +static int starfive_sm3_init_tfm(struct crypto_ahash *hash) +{ + return starfive_hash_init_tfm(hash, "sm3-generic", + STARFIVE_HASH_SM3); +} + +static int starfive_hmac_sha224_init_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->is_hmac = true; + + return starfive_hash_init_tfm(hash, "hmac(sha224-generic)", + STARFIVE_HASH_SHA224); +} + +static int starfive_hmac_sha256_init_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->is_hmac = true; + + return starfive_hash_init_tfm(hash, "hmac(sha256-generic)", + STARFIVE_HASH_SHA256); +} + +static int starfive_hmac_sha384_init_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->is_hmac = true; + + return starfive_hash_init_tfm(hash, "hmac(sha384-generic)", + STARFIVE_HASH_SHA384); +} + +static int starfive_hmac_sha512_init_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->is_hmac = true; + + return starfive_hash_init_tfm(hash, "hmac(sha512-generic)", + STARFIVE_HASH_SHA512); +} + +static int starfive_hmac_sm3_init_tfm(struct crypto_ahash *hash) +{ + struct starfive_cryp_ctx *ctx = crypto_ahash_ctx(hash); + + ctx->is_hmac = true; + + return starfive_hash_init_tfm(hash, "hmac(sm3-generic)", + STARFIVE_HASH_SM3); +} + +static struct ahash_alg algs_sha2_sm3[] = { +{ + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_sha224_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .halg = { + .digestsize = SHA224_DIGEST_SIZE, + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "sha224", + .cra_driver_name = "sha224-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA224_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_hmac_sha224_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .setkey = starfive_hash_setkey, + .halg = { + .digestsize = SHA224_DIGEST_SIZE, + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "hmac(sha224)", + .cra_driver_name = "sha224-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA224_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_sha256_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .halg = { + .digestsize = SHA256_DIGEST_SIZE, + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "sha256", + .cra_driver_name = "sha256-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_hmac_sha256_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .setkey = starfive_hash_setkey, + .halg = { + .digestsize = SHA256_DIGEST_SIZE, + .statesize = sizeof(struct sha256_state), + .base = { + .cra_name = "hmac(sha256)", + .cra_driver_name = "sha256-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_sha384_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .halg = { + .digestsize = SHA384_DIGEST_SIZE, + .statesize = sizeof(struct sha512_state), + .base = { + .cra_name = "sha384", + .cra_driver_name = "sha384-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA384_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_hmac_sha384_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .setkey = starfive_hash_setkey, + .halg = { + .digestsize = SHA384_DIGEST_SIZE, + .statesize = sizeof(struct sha512_state), + .base = { + .cra_name = "hmac(sha384)", + .cra_driver_name = "sha384-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA384_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_sha512_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .halg = { + .digestsize = SHA512_DIGEST_SIZE, + .statesize = sizeof(struct sha512_state), + .base = { + .cra_name = "sha512", + .cra_driver_name = "sha512-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_hmac_sha512_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .setkey = starfive_hash_setkey, + .halg = { + .digestsize = SHA512_DIGEST_SIZE, + .statesize = sizeof(struct sha512_state), + .base = { + .cra_name = "hmac(sha512)", + .cra_driver_name = "sha512-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA512_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_sm3_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .halg = { + .digestsize = SM3_DIGEST_SIZE, + .statesize = sizeof(struct sm3_state), + .base = { + .cra_name = "sm3", + .cra_driver_name = "sm3-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SM3_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, { + .init = starfive_hash_init, + .update = starfive_hash_update, + .final = starfive_hash_final, + .finup = starfive_hash_finup, + .digest = starfive_hash_digest, + .export = starfive_hash_export, + .import = starfive_hash_import, + .init_tfm = starfive_hmac_sm3_init_tfm, + .exit_tfm = starfive_hash_exit_tfm, + .setkey = starfive_hash_setkey, + .halg = { + .digestsize = SM3_DIGEST_SIZE, + .statesize = sizeof(struct sm3_state), + .base = { + .cra_name = "hmac(sm3)", + .cra_driver_name = "sm3-hmac-starfive", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SM3_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct starfive_cryp_ctx), + .cra_alignmask = 3, + .cra_module = THIS_MODULE, + } + } +}, +}; + +int starfive_hash_register_algs(void) +{ + return crypto_register_ahashes(algs_sha2_sm3, ARRAY_SIZE(algs_sha2_sm3)); +} + +void starfive_hash_unregister_algs(void) +{ + crypto_unregister_ahashes(algs_sha2_sm3, ARRAY_SIZE(algs_sha2_sm3)); +}