From patchwork Thu Feb 16 12:34:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoquan He X-Patchwork-Id: 58017 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp276805wrn; Thu, 16 Feb 2023 04:42:11 -0800 (PST) X-Google-Smtp-Source: AK7set94v9jux0Zj7tSK+BHAC++khs9seFzkKVpaRbnzWciwY1HS1qJLOdpi64FPfuPQjSp2HJkz X-Received: by 2002:a17:906:dd:b0:88b:a30:25f0 with SMTP id 29-20020a17090600dd00b0088b0a3025f0mr6539821eji.32.1676551331844; Thu, 16 Feb 2023 04:42:11 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1676551331; cv=none; d=google.com; s=arc-20160816; b=MaFbXB1sonsNDKzfF9z8l/IZDsSotUW8+jf8JPvZNzSAAiPTmbcZmyAQryaq7CBeLW ymowVz2dxOhwII+iY1iBLRvXf0TNNq7cPq+jLt93iKBqbc609xgw5eHAofTjoJAku+50 F+5vdXlO0zcxawH227uQGHr1K2Z7OudRPO2NPe8JA7aRbmZWC3ZOmCG6BY6QxPGF1bRf j/dYN115GZmua32B1GnUTVJPv42JhGKd3qTMorfkTdVgkw/9B+ckDDCZPoo3EimUaMj4 wVUfRSyBZBawYH66T0B+TmPQEwj6kAvSw/5Rv1a61bADJ1vru+h1paOOfQWch6xnruTw Ot6Q== 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 :dkim-signature; bh=v0nZZRtgRBEjd1TuZoUTX3TC1k0a64a2n3jlsJishp4=; b=eB39RjWRlsksY/ON3PH9Yuoa6w2cOiyoEjNR7V55Fafft80E+ogGJoG92O6KI2H9Y7 bhWT9vPsfyZRhStXgv6BeEAWNEpALs9QLvY20QsAjfS2ytlRRhSUnob6rgtaK/PJFoXk CYE5ozC39SkUdRv6kIepNoiPuFyvprMTWbWwLa3Vrhm/mJzUUs6q7j6uMhEgXx1tjNCm SRcOljQVr0ESMYcQ9ICmEPgsoMAKI/1Ewy9CPxAumP+xJ4uUdory6rDOvt05R+7rJFGy qMmfVY//MyNXSTObB4D5nfeelNx7LtZ2zJKU5ZIu52qo+YpPeUmupo4IzryodG9WfYX3 sH0A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=QyBOkhQ7; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n12-20020a17090673cc00b008b133fedfdcsi2089445ejl.803.2023.02.16.04.41.48; Thu, 16 Feb 2023 04:42:11 -0800 (PST) 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; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=QyBOkhQ7; 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; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230252AbjBPMf2 (ORCPT + 99 others); Thu, 16 Feb 2023 07:35:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230238AbjBPMf0 (ORCPT ); Thu, 16 Feb 2023 07:35:26 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15AC2305C1 for ; Thu, 16 Feb 2023 04:34:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1676550885; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=v0nZZRtgRBEjd1TuZoUTX3TC1k0a64a2n3jlsJishp4=; b=QyBOkhQ7VDc2RZaizK9tgFQZ2dEivWG7TFlHXkFCWt+sgsaa0TL4moF9/wPhEv8rSDbAND kcyRyN1ZVX4u4pNyYAd+ZTqch7yyj7c5Nk59yfOHRyV8GsTY/fYsPhvtwVd8CjMSRzQqME lemIuMgTVuj9PUJREoHE7idFEvO1Un4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-630-IqQp3gjfNf6Iot1Z8qjFEQ-1; Thu, 16 Feb 2023 07:34:39 -0500 X-MC-Unique: IqQp3gjfNf6Iot1Z8qjFEQ-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 936D0830F82; Thu, 16 Feb 2023 12:34:38 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (ovpn-12-99.pek2.redhat.com [10.72.12.99]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1A24A492C3C; Thu, 16 Feb 2023 12:34:31 +0000 (UTC) From: Baoquan He To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, akpm@linux-foundation.org, christophe.leroy@csgroup.eu, hch@infradead.org, agordeev@linux.ibm.com, wangkefeng.wang@huawei.com, schnelle@linux.ibm.com, David.Laight@ACULAB.COM, shorne@gmail.com, arnd@arndb.de, Baoquan He , Brian Cain , linux-hexagon@vger.kernel.org Subject: [PATCH v4 01/16] hexagon: mm: Convert to GENERIC_IOREMAP Date: Thu, 16 Feb 2023 20:34:04 +0800 Message-Id: <20230216123419.461016-2-bhe@redhat.com> In-Reply-To: <20230216123419.461016-1-bhe@redhat.com> References: <20230216123419.461016-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain X-Scanned-By: MIMEDefang 3.1 on 10.11.54.9 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE autolearn=unavailable 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?1757991488936045885?= X-GMAIL-MSGID: =?utf-8?q?1757991488936045885?= By taking GENERIC_IOREMAP method, the generic ioremap_prot() and iounmap() are visible and available to arch. This change will simplify implementation by removing duplicated codes with generic ioremap_prot() and iounmap(), and has the equivalent functioality. For hexagon, the current ioremap() and iounmap() are the same as generic version. After taking GENERIC_IOREMAP way, the old ioremap() and iounmap() can be completely removed. Signed-off-by: Baoquan He Cc: Brian Cain Cc: linux-hexagon@vger.kernel.org --- arch/hexagon/Kconfig | 1 + arch/hexagon/include/asm/io.h | 9 +++++-- arch/hexagon/mm/ioremap.c | 44 ----------------------------------- 3 files changed, 8 insertions(+), 46 deletions(-) delete mode 100644 arch/hexagon/mm/ioremap.c diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig index 54eadf265178..17afffde1a7f 100644 --- a/arch/hexagon/Kconfig +++ b/arch/hexagon/Kconfig @@ -25,6 +25,7 @@ config HEXAGON select NEED_SG_DMA_LENGTH select NO_IOPORT_MAP select GENERIC_IOMAP + select GENERIC_IOREMAP select GENERIC_SMP_IDLE_THREAD select STACKTRACE_SUPPORT select GENERIC_CLOCKEVENTS_BROADCAST diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h index 46a099de85b7..dcd9cbbf5934 100644 --- a/arch/hexagon/include/asm/io.h +++ b/arch/hexagon/include/asm/io.h @@ -170,8 +170,13 @@ static inline void writel(u32 data, volatile void __iomem *addr) #define writew_relaxed __raw_writew #define writel_relaxed __raw_writel -void __iomem *ioremap(unsigned long phys_addr, unsigned long size); -#define ioremap_uc(X, Y) ioremap((X), (Y)) +/* + * I/O memory mapping functions. + */ +#define _PAGE_IOREMAP (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \ + (__HEXAGON_C_DEV << 6)) + +#define ioremap_uc(addr, size) ioremap((addr), (size)) #define __raw_writel writel diff --git a/arch/hexagon/mm/ioremap.c b/arch/hexagon/mm/ioremap.c deleted file mode 100644 index 255c5b1ee1a7..000000000000 --- a/arch/hexagon/mm/ioremap.c +++ /dev/null @@ -1,44 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * I/O remap functions for Hexagon - * - * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. - */ - -#include -#include -#include - -void __iomem *ioremap(unsigned long phys_addr, unsigned long size) -{ - unsigned long last_addr, addr; - unsigned long offset = phys_addr & ~PAGE_MASK; - struct vm_struct *area; - - pgprot_t prot = __pgprot(_PAGE_PRESENT|_PAGE_READ|_PAGE_WRITE - |(__HEXAGON_C_DEV << 6)); - - last_addr = phys_addr + size - 1; - - /* Wrapping not allowed */ - if (!size || (last_addr < phys_addr)) - return NULL; - - /* Rounds up to next page size, including whole-page offset */ - size = PAGE_ALIGN(offset + size); - - area = get_vm_area(size, VM_IOREMAP); - addr = (unsigned long)area->addr; - - if (ioremap_page_range(addr, addr+size, phys_addr, prot)) { - vunmap((void *)addr); - return NULL; - } - - return (void __iomem *) (offset + addr); -} - -void iounmap(const volatile void __iomem *addr) -{ - vunmap((void *) ((unsigned long) addr & PAGE_MASK)); -}