From patchwork Sat Jan 15 13:14:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sai Prakash Ranjan X-Patchwork-Id: 12714385 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 C5A2AC433FE for ; Sat, 15 Jan 2022 13:17:24 +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=HKbAmaSYg2TRb/m9aOMqGz2c3G9jbpyCkgL4VTR3EBg=; b=n/DPAwY0N7eaL6 bpOcGaHYfqP+fS2lcAxfd5JzGEAJzGJvcapV09WYZGX3z44mUR8BAvxf2tAUR4+8vQkAbDM5TS2k/ 6l0txAqauIQ45b/YZ32VWcrP6fSKok5cTY6GwXwboWhybqYVMYPqoa4kknzRiNnEfwdGDxy9gRPqr 5l2D8ymGCtlhJv9vuHN5b1Y1RwU6rV/Pp1Qo5jqFj/a3aOZC7v0rgq7pUTwZhHjTNFmzDqFGICArV y6Loi4nJKWfoRkifOVA/JLOFNgE/Ilw9muzkE/8CVE3u0ddKSoXqbT2gqqEpyRkkUA6U0Bn2GZYm7 Fi8buljUnhx1dQR9obZQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8iuX-00B57k-75; Sat, 15 Jan 2022 13:16:01 +0000 Received: from alexa-out.qualcomm.com ([129.46.98.28]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n8iuK-00B53E-6c for linux-arm-kernel@lists.infradead.org; Sat, 15 Jan 2022 13:15:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1642252548; x=1673788548; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=tBGUoEXvKxlGYkBeNgMRWCYfUterZHVE0VWnguF/6c4=; b=xqWUDV9oiYQHa+2tjmxMCtMFdmjFYiSpv3Tkt4f8OyRUwqqkEC+N9zx/ TsICcmOC9OcFl8u47/tKwVfSL2b62JTvUABPRJKo7CdRb7SE/LnvH2wqU XvPysoXoAcx8WHpaV9oa2puEihZunfIVGLDWnR1NARbzCGh2k22LyP1Je w=; Received: from ironmsg09-lv.qualcomm.com ([10.47.202.153]) by alexa-out.qualcomm.com with ESMTP; 15 Jan 2022 05:15:43 -0800 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg09-lv.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jan 2022 05:15:42 -0800 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Sat, 15 Jan 2022 05:15:29 -0800 Received: from blr-ubuntu-253.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.922.19; Sat, 15 Jan 2022 05:15:24 -0800 From: Sai Prakash Ranjan To: Will Deacon , Catalin Marinas , Marc Zyngier , Arnd Bergmann , Steven Rostedt CC: gregkh , , , , , Trilok Soni , "Sai Prakash Ranjan" Subject: [PATCHv7 1/5] arm64: io: Use asm-generic high level MMIO accessors Date: Sat, 15 Jan 2022 18:44:51 +0530 Message-ID: X-Mailer: git-send-email 2.33.1 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220115_051548_305525_70F93E72 X-CRM114-Status: GOOD ( 10.38 ) 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 Remove custom arm64 MMIO accessors read{b,w,l,q} and their relaxed versions in support to use asm-generic defined accessors. Also define one set of IO barriers (ar/bw version) used by asm-generic code to override the arm64 specific variants. Suggested-by: Arnd Bergmann Signed-off-by: Sai Prakash Ranjan --- arch/arm64/include/asm/io.h | 41 ++++++++----------------------------- 1 file changed, 8 insertions(+), 33 deletions(-) diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index 7fd836bea7eb..1b436810d779 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -91,7 +91,7 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) } /* IO barriers */ -#define __iormb(v) \ +#define __io_ar(v) \ ({ \ unsigned long tmp; \ \ @@ -108,39 +108,14 @@ static inline u64 __raw_readq(const volatile void __iomem *addr) : "memory"); \ }) -#define __io_par(v) __iormb(v) -#define __iowmb() dma_wmb() -#define __iomb() dma_mb() - -/* - * Relaxed I/O memory access primitives. These follow the Device memory - * ordering rules but do not guarantee any ordering relative to Normal memory - * accesses. - */ -#define readb_relaxed(c) ({ u8 __r = __raw_readb(c); __r; }) -#define readw_relaxed(c) ({ u16 __r = le16_to_cpu((__force __le16)__raw_readw(c)); __r; }) -#define readl_relaxed(c) ({ u32 __r = le32_to_cpu((__force __le32)__raw_readl(c)); __r; }) -#define readq_relaxed(c) ({ u64 __r = le64_to_cpu((__force __le64)__raw_readq(c)); __r; }) +#define __io_bw() dma_wmb() +#define __io_br(v) +#define __io_aw(v) -#define writeb_relaxed(v,c) ((void)__raw_writeb((v),(c))) -#define writew_relaxed(v,c) ((void)__raw_writew((__force u16)cpu_to_le16(v),(c))) -#define writel_relaxed(v,c) ((void)__raw_writel((__force u32)cpu_to_le32(v),(c))) -#define writeq_relaxed(v,c) ((void)__raw_writeq((__force u64)cpu_to_le64(v),(c))) - -/* - * I/O memory access primitives. Reads are ordered relative to any - * following Normal memory access. Writes are ordered relative to any prior - * Normal memory access. - */ -#define readb(c) ({ u8 __v = readb_relaxed(c); __iormb(__v); __v; }) -#define readw(c) ({ u16 __v = readw_relaxed(c); __iormb(__v); __v; }) -#define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(__v); __v; }) -#define readq(c) ({ u64 __v = readq_relaxed(c); __iormb(__v); __v; }) - -#define writeb(v,c) ({ __iowmb(); writeb_relaxed((v),(c)); }) -#define writew(v,c) ({ __iowmb(); writew_relaxed((v),(c)); }) -#define writel(v,c) ({ __iowmb(); writel_relaxed((v),(c)); }) -#define writeq(v,c) ({ __iowmb(); writeq_relaxed((v),(c)); }) +/* arm64-specific, don't use in portable drivers */ +#define __iormb(v) __io_ar(v) +#define __iowmb() __io_bw() +#define __iomb() dma_mb() /* * I/O port access primitives.