From patchwork Fri Feb 26 06:22:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 63279 Delivered-To: patch@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp1580320lbc; Mon, 29 Feb 2016 18:39:40 -0800 (PST) X-Received: by 10.50.20.98 with SMTP id m2mr1215358ige.9.1456799526448; Mon, 29 Feb 2016 18:32:06 -0800 (PST) Return-Path: Received: from lists.xen.org (lists.xenproject.org. [192.237.175.120]) by mx.google.com with ESMTPS id p76si33651792iop.155.2016.02.29.18.32.06 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Feb 2016 18:32:06 -0800 (PST) Received-SPF: neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) client-ip=192.237.175.120; Authentication-Results: mx.google.com; spf=neutral (google.com: 192.237.175.120 is neither permitted nor denied by best guess record for domain of xen-devel-bounces@lists.xen.org) smtp.mailfrom=xen-devel-bounces@lists.xen.org Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1aZBp8-00065W-6p; Fri, 26 Feb 2016 06:24:22 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xen.org with esmtp (Exim 4.84) (envelope-from ) id 1aZBp7-00065O-FN for xen-devel@lists.xen.org; Fri, 26 Feb 2016 06:24:21 +0000 Received: from [85.158.137.68] by server-4.bemta-3.messagelabs.com id 6D/79-03606-49FEFC65; Fri, 26 Feb 2016 06:24:20 +0000 X-Env-Sender: zhaoshenglong@huawei.com X-Msg-Ref: server-5.tower-31.messagelabs.com!1456467854!25193810!1 X-Originating-IP: [58.251.152.64] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 7.35.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 57901 invoked from network); 26 Feb 2016 06:24:19 -0000 Received: from szxga01-in.huawei.com (HELO szxga01-in.huawei.com) (58.251.152.64) by server-5.tower-31.messagelabs.com with RC4-SHA encrypted SMTP; 26 Feb 2016 06:24:19 -0000 Received: from 172.24.1.47 (EHLO SZXEML429-HUB.china.huawei.com) ([172.24.1.47]) by szxrg01-dlp.huawei.com (MOS 4.3.7-GA FastPath queued) with ESMTP id DFG21592; Fri, 26 Feb 2016 14:24:02 +0800 (CST) Received: from HGHY1Z002260041.china.huawei.com (10.177.16.142) by SZXEML429-HUB.china.huawei.com (10.82.67.184) with Microsoft SMTP Server id 14.3.235.1; Fri, 26 Feb 2016 14:23:51 +0800 From: Shannon Zhao To: Date: Fri, 26 Feb 2016 14:22:41 +0800 Message-ID: <1456467780-8476-4-git-send-email-zhaoshenglong@huawei.com> X-Mailer: git-send-email 1.9.0.msysgit.0 In-Reply-To: <1456467780-8476-1-git-send-email-zhaoshenglong@huawei.com> References: <1456467780-8476-1-git-send-email-zhaoshenglong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.177.16.142] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.56CFEF83.012B, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2013-06-18 04:22:30, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: 45efdef46737354ea52dbbc1a8d2ff91 Cc: peter.huangpeng@huawei.com, stefano.stabellini@citrix.com, ian.campbell@citrix.com, shannon.zhao@linaro.org Subject: [Xen-devel] [PATCH v5 03/22] arm/acpi: Add __acpi_map_table function for ARM X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" From: Shannon Zhao Implement __acpi_map_table function for ARM. Signed-off-by: Shannon Zhao --- V4: add __acpi_map_table function --- xen/arch/arm/Makefile | 1 + xen/arch/arm/acpi/Makefile | 1 + xen/arch/arm/acpi/lib.c | 52 ++++++++++++++++++++++++++++++++++++++++++++ xen/include/asm-arm/config.h | 2 ++ 4 files changed, 56 insertions(+) create mode 100644 xen/arch/arm/acpi/Makefile create mode 100644 xen/arch/arm/acpi/lib.c diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile index 1783912..6d51094 100644 --- a/xen/arch/arm/Makefile +++ b/xen/arch/arm/Makefile @@ -2,6 +2,7 @@ subdir-$(CONFIG_ARM_32) += arm32 subdir-$(CONFIG_ARM_64) += arm64 subdir-y += platforms subdir-$(CONFIG_ARM_64) += efi +subdir-$(CONFIG_HAS_ACPI) += acpi obj-$(EARLY_PRINTK) += early_printk.o obj-y += cpu.o diff --git a/xen/arch/arm/acpi/Makefile b/xen/arch/arm/acpi/Makefile new file mode 100644 index 0000000..b5be22d --- /dev/null +++ b/xen/arch/arm/acpi/Makefile @@ -0,0 +1 @@ +obj-y += lib.o diff --git a/xen/arch/arm/acpi/lib.c b/xen/arch/arm/acpi/lib.c new file mode 100644 index 0000000..f817fe6 --- /dev/null +++ b/xen/arch/arm/acpi/lib.c @@ -0,0 +1,52 @@ +/* + * lib.c - Architecture-Specific Low-Level ACPI Support + * + * Copyright (C) 2015, Shannon Zhao + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#include +#include +#include + +char *__acpi_map_table(paddr_t phys, unsigned long size) +{ + unsigned long base, offset, mapped_size; + int idx; + + offset = phys & (PAGE_SIZE - 1); + mapped_size = PAGE_SIZE - offset; + set_fixmap(FIX_ACPI_BEGIN, phys >> PAGE_SHIFT, PAGE_HYPERVISOR); + base = FIXMAP_ADDR(FIX_ACPI_BEGIN); + + /* + * Most cases can be covered by the below. + */ + idx = FIX_ACPI_BEGIN; + while (mapped_size < size) { + if (++idx > FIX_ACPI_END) + return NULL; /* cannot handle this */ + phys += PAGE_SIZE; + set_fixmap(idx, phys >> PAGE_SHIFT, PAGE_HYPERVISOR); + mapped_size += PAGE_SIZE; + } + + return ((char *) base + offset); +} diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h index a1b968d..41dd860 100644 --- a/xen/include/asm-arm/config.h +++ b/xen/include/asm-arm/config.h @@ -180,6 +180,8 @@ #define FIXMAP_GICC1 4 /* Interrupt controller: CPU registers (first page) */ #define FIXMAP_GICC2 5 /* Interrupt controller: CPU registers (second page) */ #define FIXMAP_GICH 6 /* Interrupt controller: virtual interface control registers */ +#define FIX_ACPI_BEGIN 7 /* Start mappings of ACPI tables */ +#define FIX_ACPI_END 10 /* End mappings of ACPI tables */ #define PAGE_SHIFT 12