From patchwork Tue Apr 11 08:14:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jia Jie Ho X-Patchwork-Id: 13207173 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 23D96C76196 for ; Tue, 11 Apr 2023 08:17:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6Jdd1bdB2gHVWbtyQgdrXOb0jIhwpsH2KBocrmzhhBQ=; b=2N7B8LX2HsfBnb 2soE7YqsjOkCTjl4X02mTnJuAMgSTUxj7ezWXld79ezPeAQmQ98u7qe8f7QJVQJjDbLjxhiIuP/Ho 26uIFawBPerhzlslDXP3sKCOgBV26UNaqFhV3+Pt4BRDbze7v4Twt/AL7PBHnJLDjKkXKNaJiCkQl RdHwqfLH1xSdtROBi4bqniTNjxuDGDWP2VmSoJNTEJzbuck7nCie1brNwb6AtQyH2+62pVOvbYFWb U0JmP6nAKIXAa7nr7ZvIwlth1nCKfIdHj4W8QOMCEZl+2Y4lrH61uIk5xM2OALKjuvF6Snaug3rE9 tkJiKeTnjJEgUy/z6mcg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pm9Bp-00GoAu-0u; Tue, 11 Apr 2023 08:17:21 +0000 Received: from fd01.gateway.ufhost.com ([61.152.239.71]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pm9Bm-00Gneu-0u for linux-riscv@lists.infradead.org; Tue, 11 Apr 2023 08:17:20 +0000 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 fd01.gateway.ufhost.com (Postfix) with ESMTP id 398A024E2D9; Tue, 11 Apr 2023 16:14:37 +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; Tue, 11 Apr 2023 16:14:37 +0800 Received: from ubuntu.localdomain (202.188.176.82) by EXMBX168.cuchost.com (172.16.6.78) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Tue, 11 Apr 2023 16:14:33 +0800 From: Jia Jie Ho To: Herbert Xu , "David S . Miller" , Rob Herring , Krzysztof Kozlowski , Palmer Dabbelt , Emil Renner Berthing , Conor Dooley CC: , , , Subject: [PATCH v5 2/4] crypto: starfive - Add crypto engine support Date: Tue, 11 Apr 2023 16:14:22 +0800 Message-ID: <20230411081424.131912-3-jiajie.ho@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230411081424.131912-1-jiajie.ho@starfivetech.com> References: <20230411081424.131912-1-jiajie.ho@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [202.188.176.82] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX168.cuchost.com (172.16.6.78) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230411_011718_712344_C7C4BDD6 X-CRM114-Status: GOOD ( 23.06 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Adding device probe and DMA init for StarFive cryptographic module. Co-developed-by: Huan Feng Signed-off-by: Huan Feng Signed-off-by: Jia Jie Ho --- MAINTAINERS | 7 + drivers/crypto/Kconfig | 1 + drivers/crypto/Makefile | 1 + drivers/crypto/starfive/Kconfig | 17 +++ drivers/crypto/starfive/Makefile | 4 + drivers/crypto/starfive/jh7110-cryp.c | 199 ++++++++++++++++++++++++++ drivers/crypto/starfive/jh7110-cryp.h | 63 ++++++++ 7 files changed, 292 insertions(+) create mode 100644 drivers/crypto/starfive/Kconfig create mode 100644 drivers/crypto/starfive/Makefile create mode 100644 drivers/crypto/starfive/jh7110-cryp.c create mode 100644 drivers/crypto/starfive/jh7110-cryp.h diff --git a/MAINTAINERS b/MAINTAINERS index 65140500d9f8..a6f7677db4db 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19609,6 +19609,13 @@ F: Documentation/devicetree/bindings/clock/starfive* F: drivers/clk/starfive/ F: include/dt-bindings/clock/starfive* +STARFIVE CRYPTO DRIVER +M: Jia Jie Ho +M: William Qiu +S: Supported +F: Documentation/devicetree/bindings/crypto/starfive* +F: drivers/crypto/starfive/ + STARFIVE PINCTRL DRIVER M: Emil Renner Berthing M: Jianlong Huang diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 55e75fbb658e..64b94376601c 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -817,5 +817,6 @@ config CRYPTO_DEV_SA2UL source "drivers/crypto/keembay/Kconfig" source "drivers/crypto/aspeed/Kconfig" +source "drivers/crypto/starfive/Kconfig" endif # CRYPTO_HW diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile index 116de173a66c..212931c84412 100644 --- a/drivers/crypto/Makefile +++ b/drivers/crypto/Makefile @@ -53,3 +53,4 @@ obj-y += xilinx/ obj-y += hisilicon/ obj-$(CONFIG_CRYPTO_DEV_AMLOGIC_GXL) += amlogic/ obj-y += keembay/ +obj-y += starfive/ diff --git a/drivers/crypto/starfive/Kconfig b/drivers/crypto/starfive/Kconfig new file mode 100644 index 000000000000..73f39b6bc09f --- /dev/null +++ b/drivers/crypto/starfive/Kconfig @@ -0,0 +1,17 @@ +# +# StarFive crypto drivers configuration +# + +config CRYPTO_DEV_JH7110 + tristate "StarFive JH7110 cryptographic engine driver" + depends on SOC_STARFIVE + select CRYPTO_ENGINE + select ARM_AMBA + select DMADEVICES + select AMBA_PL08X + help + Support for StarFive JH7110 crypto hardware acceleration engine. + This module provides acceleration for public key algo, + skciphers, AEAD and hash functions. + + If you choose 'M' here, this module will be called starfive-crypto. diff --git a/drivers/crypto/starfive/Makefile b/drivers/crypto/starfive/Makefile new file mode 100644 index 000000000000..41221acaee39 --- /dev/null +++ b/drivers/crypto/starfive/Makefile @@ -0,0 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-$(CONFIG_CRYPTO_DEV_JH7110) += jh7110-crypto.o +jh7110-crypto-objs := jh7110-cryp.o diff --git a/drivers/crypto/starfive/jh7110-cryp.c b/drivers/crypto/starfive/jh7110-cryp.c new file mode 100644 index 000000000000..a944897609a2 --- /dev/null +++ b/drivers/crypto/starfive/jh7110-cryp.c @@ -0,0 +1,199 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Cryptographic API. + * + * Support for StarFive hardware cryptographic engine. + * Copyright (c) 2022 StarFive Technology + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "jh7110-cryp.h" + +#define DRIVER_NAME "starfive-crypto" + +struct starfive_dev_list { + struct list_head dev_list; + spinlock_t lock; /* protect dev_list */ +}; + +static struct starfive_dev_list dev_list = { + .dev_list = LIST_HEAD_INIT(dev_list.dev_list), + .lock = __SPIN_LOCK_UNLOCKED(dev_list.lock), +}; + +struct starfive_cryp_dev *starfive_cryp_find_dev(struct starfive_cryp_ctx *ctx) +{ + struct starfive_cryp_dev *cryp = NULL, *tmp; + + spin_lock_bh(&dev_list.lock); + if (!ctx->cryp) { + list_for_each_entry(tmp, &dev_list.dev_list, list) { + cryp = tmp; + break; + } + ctx->cryp = cryp; + } else { + cryp = ctx->cryp; + } + + spin_unlock_bh(&dev_list.lock); + + return cryp; +} + +static int starfive_dma_init(struct starfive_cryp_dev *cryp) +{ + dma_cap_mask_t mask; + + cryp->tx = NULL; + cryp->rx = NULL; + + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + cryp->tx = dma_request_chan(cryp->dev, "tx"); + if (IS_ERR(cryp->tx)) + return dev_err_probe(cryp->dev, PTR_ERR(cryp->tx), + "Error requesting tx dma channel.\n"); + + cryp->rx = dma_request_chan(cryp->dev, "rx"); + if (IS_ERR(cryp->rx)) { + dma_release_channel(cryp->tx); + return dev_err_probe(cryp->dev, PTR_ERR(cryp->rx), + "Error requesting rx dma channel.\n"); + } + + return 0; +} + +static void starfive_dma_cleanup(struct starfive_cryp_dev *cryp) +{ + dma_release_channel(cryp->tx); + dma_release_channel(cryp->rx); +} + +static int starfive_cryp_probe(struct platform_device *pdev) +{ + struct starfive_cryp_dev *cryp; + struct resource *res; + int ret; + + cryp = devm_kzalloc(&pdev->dev, sizeof(*cryp), GFP_KERNEL); + if (!cryp) + return -ENOMEM; + + platform_set_drvdata(pdev, cryp); + cryp->dev = &pdev->dev; + + cryp->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(cryp->base)) + return dev_err_probe(&pdev->dev, PTR_ERR(cryp->base), + "Error remapping memory for platform device\n"); + + cryp->phys_base = res->start; + cryp->dma_maxburst = 32; + + cryp->hclk = devm_clk_get(&pdev->dev, "hclk"); + if (IS_ERR(cryp->hclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(cryp->hclk), + "Error getting hardware reference clock\n"); + + cryp->ahb = devm_clk_get(&pdev->dev, "ahb"); + if (IS_ERR(cryp->ahb)) + return dev_err_probe(&pdev->dev, PTR_ERR(cryp->ahb), + "Error getting ahb reference clock\n"); + + cryp->rst = devm_reset_control_get_shared(cryp->dev, NULL); + if (IS_ERR(cryp->rst)) + return dev_err_probe(&pdev->dev, PTR_ERR(cryp->rst), + "Error getting hardware reset line\n"); + + clk_prepare_enable(cryp->hclk); + clk_prepare_enable(cryp->ahb); + reset_control_deassert(cryp->rst); + + spin_lock(&dev_list.lock); + list_add(&cryp->list, &dev_list.dev_list); + spin_unlock(&dev_list.lock); + + ret = starfive_dma_init(cryp); + if (ret) + goto err_dma_init; + + /* Initialize crypto engine */ + cryp->engine = crypto_engine_alloc_init(&pdev->dev, 1); + if (!cryp->engine) { + ret = -ENOMEM; + goto err_engine; + } + + ret = crypto_engine_start(cryp->engine); + if (ret) + goto err_engine_start; + + return 0; + +err_engine_start: + crypto_engine_exit(cryp->engine); +err_engine: + starfive_dma_cleanup(cryp); +err_dma_init: + spin_lock(&dev_list.lock); + list_del(&cryp->list); + spin_unlock(&dev_list.lock); + + return ret; +} + +static int starfive_cryp_remove(struct platform_device *pdev) +{ + struct starfive_cryp_dev *cryp = platform_get_drvdata(pdev); + + if (!cryp) + return -ENODEV; + + crypto_engine_stop(cryp->engine); + crypto_engine_exit(cryp->engine); + + starfive_dma_cleanup(cryp); + + spin_lock(&dev_list.lock); + list_del(&cryp->list); + spin_unlock(&dev_list.lock); + + clk_disable_unprepare(cryp->hclk); + clk_disable_unprepare(cryp->ahb); + reset_control_assert(cryp->rst); + + return 0; +} + +static const struct of_device_id starfive_dt_ids[] __maybe_unused = { + { .compatible = "starfive,jh7110-crypto", .data = NULL}, + {}, +}; +MODULE_DEVICE_TABLE(of, starfive_dt_ids); + +static struct platform_driver starfive_cryp_driver = { + .probe = starfive_cryp_probe, + .remove = starfive_cryp_remove, + .driver = { + .name = DRIVER_NAME, + .of_match_table = starfive_dt_ids, + }, +}; + +module_platform_driver(starfive_cryp_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("StarFive Cryptographic Module"); diff --git a/drivers/crypto/starfive/jh7110-cryp.h b/drivers/crypto/starfive/jh7110-cryp.h new file mode 100644 index 000000000000..393efd38b098 --- /dev/null +++ b/drivers/crypto/starfive/jh7110-cryp.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __STARFIVE_STR_H__ +#define __STARFIVE_STR_H__ + +#include +#include +#include + +#include + +#define STARFIVE_ALG_CR_OFFSET 0x0 +#define STARFIVE_ALG_FIFO_OFFSET 0x4 +#define STARFIVE_IE_MASK_OFFSET 0x8 +#define STARFIVE_IE_FLAG_OFFSET 0xc +#define STARFIVE_DMA_IN_LEN_OFFSET 0x10 +#define STARFIVE_DMA_OUT_LEN_OFFSET 0x14 + +#define STARFIVE_MSG_BUFFER_SIZE SZ_16K + +union starfive_alg_cr { + u32 v; + struct { + u32 start :1; + u32 aes_dma_en :1; + u32 rsvd_0 :1; + u32 hash_dma_en :1; + u32 alg_done :1; + u32 rsvd_1 :3; + u32 clear :1; + u32 rsvd_2 :23; + }; +}; + +struct starfive_cryp_ctx { + struct crypto_engine_ctx enginectx; + struct starfive_cryp_dev *cryp; +}; + +struct starfive_cryp_dev { + struct list_head list; + struct device *dev; + + struct clk *hclk; + struct clk *ahb; + struct reset_control *rst; + + void __iomem *base; + phys_addr_t phys_base; + + u32 dma_maxburst; + struct dma_chan *tx; + struct dma_chan *rx; + struct dma_slave_config cfg_in; + struct dma_slave_config cfg_out; + + struct crypto_engine *engine; + + union starfive_alg_cr alg_cr; +}; + +struct starfive_cryp_dev *starfive_cryp_find_dev(struct starfive_cryp_ctx *ctx); + +#endif