From patchwork Thu May 30 12:24:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kamlesh Gurudasani X-Patchwork-Id: 13680337 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 1EE64C25B74 for ; Thu, 30 May 2024 12:25:23 +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: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:In-Reply-To:References: List-Owner; bh=z9TQf8WlmUgHo6wa97PXZGBafExHNXBLGzLiABJ8cSI=; b=2yrQ7BokmfFEk0 6EqYA3SXX3soLJ3/kwN1KGRmV23u4cYGLPmeqb9mX1CmC/zgpS2YO7T+92MVPto1ii/2XF06H9Otu rnhRKvLMRaBP/PNIhMlgnfvQcJvR1HIYHFmMJzMlO7curvZC4LT5RUFbZUB0FtjVE1xn358+YONnh X1LUwFIofTu5Etps2BtfPvnwIO7le1FMzIVbB8fq8DWMOtgevObDfBOZyMUMn0aryn/2VDOcFfiIl 1Lq9xzJDVnUkoTvy5QEFJcjzA4Gn/owxFrjmgg6a2wH1R9vtwzFHLRT2O1WjfvGnUtSJ594rcu5np GnXduQXCqZJNQequtDhA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sCeq3-00000007DLC-1T9y; Thu, 30 May 2024 12:24:59 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sCepz-00000007DHn-2DIc for linux-arm-kernel@lists.infradead.org; Thu, 30 May 2024 12:24:57 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 44UCOYkl034061; Thu, 30 May 2024 07:24:34 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1717071874; bh=9G8DsOOCcxpiOxg/zCDdoC56mB3uq1iBt87Tz0RLNhQ=; h=From:To:CC:Subject:Date; b=rmIkDzDzqclhxHrg9v17aT6zns2dPJRLcIdmxqLfAuVzbzgTtpxNpFqUAcM1XBbvF brZWNSO56d1BFXixdTaWrUUKDlW67/P8tR10wQ+Yn30+WQGsjdhGMA8Sr6CEkPbZJ9 DXdv2oC++J3ryGKWuHR/Y34sES2RQHrFznxdIFr0= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 44UCOYAU067738 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 30 May 2024 07:24:34 -0500 Received: from DLEE110.ent.ti.com (157.170.170.21) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Thu, 30 May 2024 07:24:34 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE110.ent.ti.com (157.170.170.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Thu, 30 May 2024 07:24:34 -0500 Received: from localhost (kamlesh.dhcp.ti.com [172.24.227.123]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 44UCOXto070403; Thu, 30 May 2024 07:24:34 -0500 From: To: , , CC: , , , , , , , , , , , , , , Kamlesh Gurudasani Subject: [PATCH v3 0/6] Add support for MCRC64 engine to calculate 64-bit CRC in Full-CPU mode Date: Thu, 30 May 2024 17:54:22 +0530 Message-ID: <20240524-mcrc64-upstream-v3-0-24b94d8e8578@ti.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240530_052455_714236_78093126 X-CRM114-Status: GOOD ( 13.94 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Kamlesh Gurudasani MCRC64 engine calculates 64-bit cyclic redundancy checks (CRC) according to the ISO 3309 standard. The ISO 3309 64-bit CRC model parameters are as follows: Generator Polynomial: x^64 + x^4 + x^3 + x + 1 Polynomial Value: 0x000000000000001B Initial value: 0x0000000000000000 Reflected Input: False Reflected Output: False Xor Final: 0x0000000000000000 ISO 3309 which came in 1991 define this 64-bit CRC, ISO 3309 which came in 1993 doesn't define 64-bit CRC algorithm at all, so ISO-3309 naming is unique enough for this CRC64 generator polynomial. Tested with CONFIG_CRYPTO_MANAGER_DISABLE_TESTS is not set CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y and tcrypt, sudo modprobe tcrypt mode=329 sec=1 User space application implemented using algif_hash [0]. I understand that this is a old algorithm but, most of TI's K3 based J7* and AM62* SOCs have MCRC64 which we want to use from User Space. As per suggestions, we did the calculations and it turns out to be we are saving good number of cpu cycles with HW offload[1]. Also, there are some automotive customers who have a safety requirement to offload any parameters that are in Linux to ensure FFI. [0] https://gist.github.com/ti-kamlesh/73abfcc1a33318bb3b199d36b6209e59 [1] https://patchwork.kernel.org/comment/25492483/ Signed-off-by: Kamlesh Gurudasani --- Changes in v3: - Changed the name for algorithm from crc64-iso to crc64-iso3309 - Removed unused code from Patch 2/6. - Updated dt-bindings according to review comments Patch 3/6 - Added option to select SW implementation of algorithm Patch 4/6 - Added depends ORed with COMPILE_TEST Patch 4/6 - Patch 6/6, added specific devices that will benefit out of this - Marking patch 5,6/6 as DONOTMERGE as they will go in via subsystem Maintainer tree Changes in v2: - Add generic implementation of crc64-iso - Fixes according to review comments - Link to v1: https://lore.kernel.org/r/20230719-mcrc-upstream-v1-0-dc8798a24c47@ti.com --- Kamlesh Gurudasani (6): lib: add ISO 3309 model crc64 crypto: crc64 - add crc64-iso3309 framework dt-bindings: crypto: Add Texas Instruments MCRC64 crypto: ti - add driver for MCRC64 engine arm64: dts: ti: k3-am62: Add dt node, cbass_main ranges for MCRC64 arm64: defconfig: enable TI MCRC64 module Documentation/devicetree/bindings/crypto/ti,mcrc64.yaml | 48 +++++++ MAINTAINERS | 7 ++ arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 7 ++ arch/arm64/boot/dts/ti/k3-am62.dtsi | 1 + arch/arm64/configs/defconfig | 2 + crypto/Kconfig | 11 ++ crypto/Makefile | 1 + crypto/crc64_iso3309_generic.c | 119 ++++++++++++++++++ crypto/tcrypt.c | 6 + crypto/testmgr.c | 7 ++ crypto/testmgr.h | 404 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ drivers/crypto/Kconfig | 1 + drivers/crypto/Makefile | 1 + drivers/crypto/ti/Kconfig | 11 ++ drivers/crypto/ti/Makefile | 2 + drivers/crypto/ti/mcrc64.c | 442 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ include/linux/crc64.h | 2 + lib/crc64.c | 27 ++++ lib/gen_crc64table.c | 6 + 19 files changed, 1105 insertions(+) --- base-commit: 13909a0c88972c5ef5d13f44d1a8bf065a31bdf4 change-id: 20240524-mcrc64-upstream-e0ce4aad64ad Best regards,