From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423199AbbD2NoY (ORCPT ); Wed, 29 Apr 2015 09:44:24 -0400 Received: from mail-by2on0104.outbound.protection.outlook.com ([207.46.100.104]:31507 "EHLO na01-by2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1422969AbbD2NoQ (ORCPT ); Wed, 29 Apr 2015 09:44:16 -0400 Authentication-Results: spf=none (sender IP is 165.204.84.221) smtp.mailfrom=amd.com; arm.com; dkim=none (message not signed) header.d=none; X-WSS-ID: 0NNKM5O-07-8GB-02 X-M-MSG: From: Suravee Suthikulpanit To: , , , CC: , , , , , , , , , , "Suravee Suthikulpanit" Subject: [PATCH 1/2] arm/arm64: ACPI: Introduce CONFIG_ACPI_MUST_HAVE_CCA Date: Wed, 29 Apr 2015 08:44:08 -0500 Message-ID: <1430315049-4663-2-git-send-email-Suravee.Suthikulpanit@amd.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430315049-4663-1-git-send-email-Suravee.Suthikulpanit@amd.com> References: <1430315049-4663-1-git-send-email-Suravee.Suthikulpanit@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:165.204.84.221;CTRY:US;IPV:NLI;EFV:NLI;SFV:NSPM;SFS:(10019020)(6009001)(428002)(199003)(189002)(15975445007)(77156002)(76176999)(77096005)(5001770100001)(105586002)(19580395003)(229853001)(50986999)(19580405001)(53416004)(106466001)(2950100001)(62966003)(92566002)(46102003)(101416001)(575784001)(47776003)(50466002)(36756003)(87936001)(50226001)(86362001)(48376002);DIR:OUT;SFP:1102;SCL:1;SRVR:BY1PR02MB1113;H:atltwp01.amd.com;FPR:;SPF:None;MLV:sfv;A:1;MX:1;LANG:en; X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BY1PR02MB1113; X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(601004)(5005006)(3002001);SRVR:BY1PR02MB1113;BCL:0;PCL:0;RULEID:;SRVR:BY1PR02MB1113; X-Forefront-PRVS: 05610E64EE X-OriginatorOrg: amd4.onmicrosoft.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Apr 2015 13:44:14.5126 (UTC) X-MS-Exchange-CrossTenant-Id: fde4dada-be84-483f-92cc-e026cbee8e96 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=fde4dada-be84-483f-92cc-e026cbee8e96;Ip=[165.204.84.221];Helo=[atltwp01.amd.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY1PR02MB1113 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>From ACPIv6 (http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf), section 6.2.17 _CCA states that ARM platforms require ACPI _CCA object to be specified for DMA-cabpable devices. This patch introduces ACPI_MUST_HAVE_CCA in arm and arm64 Kconfig to specify such requirement. Note that when _CCA is required, if it is missing in the DSDT. ACPI driver will default to setting up devices as non-coherent. Signed-off-by: Mark Salter Signed-off-by: Suravee Suthikulpanit --- arch/arm/Kconfig | 1 + arch/arm64/Kconfig | 1 + drivers/acpi/Kconfig | 3 +++ 3 files changed, 5 insertions(+) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 45df48b..2a0d036 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1,6 +1,7 @@ config ARM bool default y + select ACPI_MUST_HAVE_CCA if ACPI select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 4269dba..e5471f8 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,6 +1,7 @@ config ARM64 def_bool y select ACPI_GENERIC_GSI if ACPI + select ACPI_MUST_HAVE_CCA if ACPI select ACPI_REDUCED_HARDWARE_ONLY if ACPI select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_ELF_RANDOMIZE diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index ab2cbb5..620ee67 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -54,6 +54,9 @@ config ACPI_GENERIC_GSI config ACPI_SYSTEM_POWER_STATES_SUPPORT bool +config ACPI_MUST_HAVE_CCA + bool + config ACPI_SLEEP bool depends on SUSPEND || HIBERNATION -- 2.1.0