From patchwork Tue Oct 8 07:50:09 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julian Vetter X-Patchwork-Id: 13825861 Received: from smtpout143.security-mail.net (smtpout143.security-mail.net [85.31.212.143]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A12241E0DB5 for ; Tue, 8 Oct 2024 07:51:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=85.31.212.143 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728373876; cv=fail; b=WwQtghX1lIfrNe3Utj6JEsA66j7neIg9HCN1KzZMYLxHJ5kwE4rMIzA8Kk0v0QSZW+w39zcRcyc/JdnuDg4y0riSbFGbRr+F9z5qf68/NL1Y3N2eJzGpOrcAiMEzhH4cifUZII/IuLsJH+KAmrCoWsZr20rlRmORG5T75dTtdko= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728373876; c=relaxed/simple; bh=qYgORECpsAPINkRpB+tvYiLmWpZFPn9QHwCQlwVNjhM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=AnYq1+RFIypNHLM7G65yeBPMzNvneOCpu+6fUoUPU3OYLPXl4iKkpMrlI56n0MXgursTgB/1XVA/XnD+yBMEVRZeTqns+FWiCigYnDw61yb0FwLbVmsmF+rMjBkhwrVG987lOMmKgnvw5OV1PJtogFkEVq9bUgc+UM/648/Uv04= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kalrayinc.com; spf=pass smtp.mailfrom=kalrayinc.com; dkim=pass (1024-bit key) header.d=kalrayinc.com header.i=@kalrayinc.com header.b=YJbeK/2R; dkim=fail (2048-bit key) header.d=kalrayinc.com header.i=@kalrayinc.com header.b=jPZoGRUe reason="signature verification failed"; arc=fail smtp.client-ip=85.31.212.143 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=kalrayinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kalrayinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=kalrayinc.com header.i=@kalrayinc.com header.b="YJbeK/2R"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=kalrayinc.com header.i=@kalrayinc.com header.b="jPZoGRUe" Received: from localhost (localhost [127.0.0.1]) by fx403.security-mail.net (Postfix) with ESMTP id ECE2C8A312E for ; Tue, 08 Oct 2024 09:51:05 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kalrayinc.com; s=sec-sig-email; t=1728373866; bh=qYgORECpsAPINkRpB+tvYiLmWpZFPn9QHwCQlwVNjhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YJbeK/2RTLCnR9SbOVoC3PnK2ka0n9PF/SV9jr5If2IB4zV2diAVfztr2IPn94JNw 0t91OKy/XPqdVFJXTfFI6o0DJzxq18mYIz3rnxaGN1FzCKVdIwQ3HCOFDO3rzfmXVw qxOWnNAmc9i3DKLYG3KKCphOSmWrF+ghXjoSkrJY= Received: from fx403 (localhost [127.0.0.1]) by fx403.security-mail.net (Postfix) with ESMTP id 8CE6C8A215D; Tue, 08 Oct 2024 09:51:05 +0200 (CEST) Received: from PAUP264CU001.outbound.protection.outlook.com (mail-francecentralazlp17011025.outbound.protection.outlook.com [40.93.76.25]) by fx403.security-mail.net (Postfix) with ESMTPS id CFC508A2C45; Tue, 08 Oct 2024 09:51:03 +0200 (CEST) Received: from PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) by MR1P264MB2194.FRAP264.PROD.OUTLOOK.COM (2603:10a6:501:5::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8026.23; Tue, 8 Oct 2024 07:51:02 +0000 Received: from PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM ([fe80::6fc2:2c8c:edc1:f626]) by PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM ([fe80::6fc2:2c8c:edc1:f626%4]) with mapi id 15.20.8026.020; Tue, 8 Oct 2024 07:51:02 +0000 X-Secumail-id: <909d.6704e467.cadb3.0> ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=D7ZJAI1LqXRCsR4arfo7oF1MUgFn4CmzqcpfroFD5iVqV72A9G2OHWoZNdSMK1yJlgraMd6QBP9nYbcq/BwLvAgWb28Y3yflEB3kbtll4IF4xbJ5UFfNUwXWBkqY5z9nof66ABczmejsgS0GZWm/hyKrvMmFW3AODVGyH6QQpDWmmBP62mn0cf22g4GgsO+txsxspoZoQCBOrLjVC+42ye0738ewd2i4UBx/p93CypiKuLgsF0OJAV2XqAWDstIQP0k6ZN8vZzOXdP+PEZ2N2VjRISHOVSgevvgJm3eyY4udsDvHj/yErZC0dizxjQrpNWjh3yVzZzgTBK2lSpKR9g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=3WLyosKI1vJsY93JSmy9zHVqPowSKC/w+daogUuRq5Q=; b=YounfNzwIyM2zFPgVLysVIdclGTpTJaML2+wz0ljcJKCTbDqqGgF7STmDCOhoyhIFF0/kl1qJeltI1ZWGVH4Y5aLRA2BeQhzhTxckw1gCCFBjexjDVvFuwoPdD/E+7la1P6CSkt/qrZwNSCfJeUbkh0DsGpqZgaG+jd7b7N7NFy/gX29YOPzsh7O4hm7+mO2axYG8cWcDFsDkgqGSHwfKc93+0IOv96CjdFM7tK16kE9ayjXtLcK9zoz9G0H1QdRvWONdUjGasWsOjht+qiEw3o6oo0RR0F4nHJHF4R+1vC+dfl/XsRrA+9B4bMBz0vnHhvu1V0QkSjtmjcaVqv4bw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=kalrayinc.com; dmarc=pass action=none header.from=kalrayinc.com; dkim=pass header.d=kalrayinc.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kalrayinc.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=3WLyosKI1vJsY93JSmy9zHVqPowSKC/w+daogUuRq5Q=; b=jPZoGRUeypOCsBz9xfYGcZQgKjUqEaRByoai34gblY8OP4qUEjnibIYcrM5BvQgxUcZFbJrdIsH+BpiMZatJwVK+LjU3vW4XCGOwQGmBmGENfScP00aIiC+cw7iBPBSrt4dF1wEHjkkqmEZgt8jFgAqb6LpZTaxAV9TCQvpnVIbhHGaJfl1lx8Ugz4iyN9blg2QfMBmLew7fVAq4DE/7QNH/Z/JUAIG5bhrexW6t438cwBcZvMt6JcfdiDCvRPGrDuHULbsy+H1I7zbEbbX69rdk3gRHYavf7LpjB3eSNOaWfczFdo1Z2lkEXhxbBGdEViAIttDAaRmSHy9XwjQ1/A== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=kalrayinc.com; From: Julian Vetter To: Arnd Bergmann , Russell King , Catalin Marinas , Will Deacon , Guo Ren , Huacai Chen , WANG Xuerui , Andrew Morton , Geert Uytterhoeven , Richard Henderson , Ivan Kokshaysky , Matt Turner , "James E . J . Bottomley" , Helge Deller , Yoshinori Sato , Rich Felker , John Paul Adrian Glaubitz , Richard Weinberger , Anton Ivanov , Johannes Berg , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Naveen N Rao , Madhavan Srinivasan , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Niklas Schnelle , Manivannan Sadhasivam , Miquel Raynal , Vignesh Raghavendra , Jaroslav Kysela , Takashi Iwai Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-alpha@vger.kernel.org, linux-parisc@vger.kernel.org, linux-sh@vger.kernel.org, linux-um@lists.infradead.org, linux-arch@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-sound@vger.kernel.org, Yann Sionneau , Julian Vetter Subject: [PATCH v8 01/14] Consolidate IO memcpy/memset into iomap_copy.c Date: Tue, 8 Oct 2024 09:50:09 +0200 Message-ID: <20241008075023.3052370-2-jvetter@kalrayinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241008075023.3052370-1-jvetter@kalrayinc.com> References: <20241008075023.3052370-1-jvetter@kalrayinc.com> X-ClientProxiedBy: AM4PR07CA0019.eurprd07.prod.outlook.com (2603:10a6:205:1::32) To PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM (2603:10a6:102:118::6) Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAYP264MB3766:EE_|MR1P264MB2194:EE_ X-MS-Office365-Filtering-Correlation-Id: 589e05f5-fb13-4baf-8e89-08dce76df4d6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|52116014|366016|921020|38350700014; X-Microsoft-Antispam-Message-Info: qhXyR9A+Cq+BOKEJt3ErUwIrXfeO8nStfnCi/l4ZU4VlhLxJ0RE02Tee+90WVC8Jz2AAGoNY6ntvU2F2F4bAkBHwQchK1vP8jO7hCG05z3+Y3LEMl6gIOEZVxuAxKKiYWL1w3ADBAH8H+/1U7ylZKSaYpAn3aghYTpoETwfWWxFMiyxVhM/LSn1Emt9wRX6f2ULSpKi1MoCGsLn//wX7pyAeiDApHo3K7CXugKw+biV/o2iA2o3Tj70ak4ISFsS74XbD6wmqZUaquiWB6R3e1eVAg4V9Y2yRqBiTpEjrP6Opd5qlLJcGfoYF047eeuhWdREsR0MZdMpdHIIL3GiVwsfwsaDPCD3Oi9a4VupQLraiAlfGokmxz2nbCGYG4Lg3K8XonJOfR5uG0ddMjtELwdfe0NUEirg4e9m8D6lYG2kPkLGANILi3yAF7Ay7snmqDqPNdV6xEebY+BjAQGKPFRLNseVrNK4JKZWeNlsIgQscjxWBKtOIBF9TwDvIn6U/utuFt/kYoCytemoo4FRUBy5JQPSJ5t66l+J4eYvp9gjyLcuOVOK3yrgoUtdQPHXkhRzYxXlbXpyzRgQsYOwMFWYZoRWo6vc2fMjLg2QEx1RTLciayFC4YFfyXgHbyr3b9ryDPyjWieZleyPv5v6bphMk2zU2SbcSH+ZKzFqc0gj7FStLxYRkCoaVz1riwr1qYa8LLO0NFbaBzdJGBs1tEOkTdtFCa9TqZBVyoKFfveDwoQQ/ku6L2FLTIkH+U5ThvDmAcM6eYh1+FeUhhUAxWRO0PKxJSC7CKMzTm5y9gO41ztSgxidNu9CFN56vLofd7ik+dZopdtAK2WE5uwTNcWWJpl+uSDAEGL1T9SA8d+fDkQMgJo/owFFwmEzHT/Mlqmjz8uxJJwYoPdcKqa7TVfW458mLGbMI+XpDDRHgX4Oy1HW2RMrmmelpCg57NclVHLO hFesZyOmTyr4lw55xnqXipHKO+J0X0VEG6RqTI8zmuH5hmY1t6IiHA7+rNL9Slfp4dnzInHkifYXNF3Wfmv142oWbUdBCVgJhQmSTxepedkVM3fzsE9DzGQAr3sm1mAfpGNcq6JuXyVw1/C2aXlVIIrofSj3xyZybuUABQ4wWgM288LxUukDGtOSgyUSBXkQkyfMGCZjhOAs3jNS6qyBC+uaYfnffTtCA95VMRAZKcSoM5yCY29sQXhCY1LD5Q4jkPhSj4F2tYilTmBeZlSaLsxNsMwi/9ByKVc0kbhTfinKzzIgonELgysqFPOxX5U1iH2L4Kx/TQaOT8nRM10UACm/YdOcPFYLXs7lju7ONilapz5OlInEiNHGDXDN7Sep6gJC6xrUS+PXKLLaG6PwEz3crKu5BOdIHrjqnjb4= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(376014)(7416014)(52116014)(366016)(921020)(38350700014);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: kalrayinc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 589e05f5-fb13-4baf-8e89-08dce76df4d6 X-MS-Exchange-CrossTenant-AuthSource: PAYP264MB3766.FRAP264.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Oct 2024 07:51:02.6486 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8931925d-7620-4a64-b7fe-20afd86363d3 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: HlkUGVh+xpm47i2Esk1yw7YGpqb8meKGV+9HfVszLhR4o66ZKbNd5jIpmaB7Y0rTcGBTI5oWROYO97SVwv3fMg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MR1P264MB2194 X-ALTERMIMEV2_out: done Various architectures have almost the same implementations for memcpy_{to,from}io and memset_io functions. So, consolidate them into the existing lib/iomap_copy.c. Reviewed-by: Yann Sionneau Signed-off-by: Julian Vetter --- Changes for v8: - Replaced shifts by 'qc *= ~0UL / 0xff' - Modification in v6.12-rc2: Include 'linux/unaligned.h' instead of 'asm/unaligned.h' --- include/asm-generic/io.h | 58 ++---------------- lib/iomap_copy.c | 127 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 133 insertions(+), 52 deletions(-) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 80de699bf6af..f14655ed4d9d 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -102,6 +102,12 @@ static inline void log_post_read_mmio(u64 val, u8 width, const volatile void __i #endif /* CONFIG_TRACE_MMIO_ACCESS */ +extern void memcpy_fromio(void *to, const volatile void __iomem *from, + size_t count); +extern void memcpy_toio(volatile void __iomem *to, const void *from, + size_t count); +extern void memset_io(volatile void __iomem *dst, int c, size_t count); + /* * __raw_{read,write}{b,w,l,q}() access memory in native endianness. * @@ -1150,58 +1156,6 @@ static inline void unxlate_dev_mem_ptr(phys_addr_t phys, void *addr) } #endif -#ifndef memset_io -#define memset_io memset_io -/** - * memset_io Set a range of I/O memory to a constant value - * @addr: The beginning of the I/O-memory range to set - * @val: The value to set the memory to - * @count: The number of bytes to set - * - * Set a range of I/O memory to a given value. - */ -static inline void memset_io(volatile void __iomem *addr, int value, - size_t size) -{ - memset(__io_virt(addr), value, size); -} -#endif - -#ifndef memcpy_fromio -#define memcpy_fromio memcpy_fromio -/** - * memcpy_fromio Copy a block of data from I/O memory - * @dst: The (RAM) destination for the copy - * @src: The (I/O memory) source for the data - * @count: The number of bytes to copy - * - * Copy a block of data from I/O memory. - */ -static inline void memcpy_fromio(void *buffer, - const volatile void __iomem *addr, - size_t size) -{ - memcpy(buffer, __io_virt(addr), size); -} -#endif - -#ifndef memcpy_toio -#define memcpy_toio memcpy_toio -/** - * memcpy_toio Copy a block of data into I/O memory - * @dst: The (I/O memory) destination for the copy - * @src: The (RAM) source for the data - * @count: The number of bytes to copy - * - * Copy a block of data to I/O memory. - */ -static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer, - size_t size) -{ - memcpy(__io_virt(addr), buffer, size); -} -#endif - extern int devmem_is_allowed(unsigned long pfn); #endif /* __KERNEL__ */ diff --git a/lib/iomap_copy.c b/lib/iomap_copy.c index 2fd5712fb7c0..175d6930c293 100644 --- a/lib/iomap_copy.c +++ b/lib/iomap_copy.c @@ -3,8 +3,11 @@ * Copyright 2006 PathScale, Inc. All Rights Reserved. */ +#include #include #include +#include +#include /** * __iowrite32_copy - copy data to MMIO space, in 32-bit units @@ -76,3 +79,127 @@ void __iowrite64_copy(void __iomem *to, const void *from, size_t count) } EXPORT_SYMBOL_GPL(__iowrite64_copy); #endif + +#ifndef memcpy_fromio +/** + * memcpy_fromio Copy a block of data from I/O memory + * @to: The (RAM) destination for the copy + * @from: The (I/O memory) source for the data + * @count: The number of bytes to copy + * + * Copy a block of data from I/O memory. + */ +void memcpy_fromio(void *to, const volatile void __iomem *from, size_t count) +{ + while (count && !IS_ALIGNED((long)from, sizeof(long))) { + *(u8 *)to = __raw_readb(from); + from++; + to++; + count--; + } + + while (count >= sizeof(long)) { +#ifdef CONFIG_64BIT + long val = __raw_readq(from); +#else + long val = __raw_readl(from); +#endif + put_unaligned(val, (long *)to); + + + from += sizeof(long); + to += sizeof(long); + count -= sizeof(long); + } + + while (count) { + *(u8 *)to = __raw_readb(from); + from++; + to++; + count--; + } +} +EXPORT_SYMBOL(memcpy_fromio); +#endif + +#ifndef memcpy_toio +/** + * memcpy_toio Copy a block of data into I/O memory + * @to: The (I/O memory) destination for the copy + * @from: The (RAM) source for the data + * @count: The number of bytes to copy + * + * Copy a block of data to I/O memory. + */ +void memcpy_toio(volatile void __iomem *to, const void *from, size_t count) +{ + while (count && !IS_ALIGNED((long)to, sizeof(long))) { + __raw_writeb(*(u8 *)from, to); + from++; + to++; + count--; + } + + while (count >= sizeof(long)) { + long val = get_unaligned((long *)from); +#ifdef CONFIG_64BIT + __raw_writeq(val, to); +#else + __raw_writel(val, to); +#endif + + from += sizeof(long); + to += sizeof(long); + count -= sizeof(long); + } + + while (count) { + __raw_writeb(*(u8 *)from, to); + from++; + to++; + count--; + } +} +EXPORT_SYMBOL(memcpy_toio); +#endif + +#ifndef memset_io +/** + * memset_io Set a range of I/O memory to a constant value + * @dst: The beginning of the I/O-memory range to set + * @c: The value to set the memory to + * @count: The number of bytes to set + * + * Set a range of I/O memory to a given value. + */ +void memset_io(volatile void __iomem *dst, int c, size_t count) +{ + long qc = (u8)c; + + qc *= ~0UL / 0xff; + + while (count && !IS_ALIGNED((long)dst, sizeof(long))) { + __raw_writeb(c, dst); + dst++; + count--; + } + + while (count >= sizeof(long)) { +#ifdef CONFIG_64BIT + __raw_writeq(qc, dst); +#else + __raw_writel(qc, dst); +#endif + + dst += sizeof(long); + count -= sizeof(long); + } + + while (count) { + __raw_writeb(c, dst); + dst++; + count--; + } +} +EXPORT_SYMBOL(memset_io); +#endif