From mboxrd@z Thu Jan 1 00:00:00 1970 From: Catalin Marinas Subject: Re: [patch v11 05/23] ACPI: fix acpi_os_ioremap for arm64 Date: Wed, 25 Mar 2015 16:50:04 +0000 Message-ID: <20150325165004.GD14585@localhost> References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org> <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Hanjun Guo Cc: Mark Rutland , Lorenzo Pieralisi , Robert Richter , Arnd Bergmann , Ashwin Chaugule , linaro-acpi@lists.linaro.org, Marc Zyngier , "Rafael J. Wysocki" , Timur Tabi , Mark Salter , Will Deacon , linux-kernel@vger.kernel.org, Sudeep Holla , Grant Likely , Mark Brown , Suravee Suthikulpanit , Jon Masters , Olof Johansson , Graeme Gregory , linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: linux-acpi@vger.kernel.org On Tue, Mar 24, 2015 at 10:02:38PM +0800, Hanjun Guo wrote: > From: Mark Salter > > The acpi_os_ioremap() function may be used to map normal RAM or IO > regions. The current implementation simply uses ioremap_cache(). This > will work for some architectures, but arm64 ioremap_cache() cannot be > used to map IO regions which don't support caching. So for arm64, use > ioremap() for non-RAM regions. > > CC: Rafael J Wysocki > CC: Catalin Marinas > Tested-by: Robert Richter > Tested-by: Timur Tabi > Acked-by: Robert Richter > Acked-by: Rafael J. Wysocki > Reviewed-by: Grant Likely > Signed-off-by: Mark Salter > Signed-off-by: Hanjun Guo Acked-by: Catalin Marinas From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Wed, 25 Mar 2015 16:50:04 +0000 Subject: [patch v11 05/23] ACPI: fix acpi_os_ioremap for arm64 In-Reply-To: <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org> <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> Message-ID: <20150325165004.GD14585@localhost> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Mar 24, 2015 at 10:02:38PM +0800, Hanjun Guo wrote: > From: Mark Salter > > The acpi_os_ioremap() function may be used to map normal RAM or IO > regions. The current implementation simply uses ioremap_cache(). This > will work for some architectures, but arm64 ioremap_cache() cannot be > used to map IO regions which don't support caching. So for arm64, use > ioremap() for non-RAM regions. > > CC: Rafael J Wysocki > CC: Catalin Marinas > Tested-by: Robert Richter > Tested-by: Timur Tabi > Acked-by: Robert Richter > Acked-by: Rafael J. Wysocki > Reviewed-by: Grant Likely > Signed-off-by: Mark Salter > Signed-off-by: Hanjun Guo Acked-by: Catalin Marinas From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752574AbbCZBDU (ORCPT ); Wed, 25 Mar 2015 21:03:20 -0400 Received: from eu-smtp-delivery-143.mimecast.com ([207.82.80.143]:11345 "EHLO eu-smtp-delivery-143.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752413AbbCZBDH convert rfc822-to-8bit (ORCPT ); Wed, 25 Mar 2015 21:03:07 -0400 Date: Wed, 25 Mar 2015 16:50:04 +0000 From: Catalin Marinas To: Hanjun Guo Cc: "Rafael J. Wysocki" , Will Deacon , Olof Johansson , Grant Likely , Mark Rutland , Ashwin Chaugule , Lorenzo Pieralisi , Robert Richter , Arnd Bergmann , Graeme Gregory , linaro-acpi@lists.linaro.org, Marc Zyngier , Jon Masters , Timur Tabi , Mark Salter , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Mark Brown , Suravee Suthikulpanit , Sudeep Holla , linux-arm-kernel@lists.infradead.org Subject: Re: [patch v11 05/23] ACPI: fix acpi_os_ioremap for arm64 Message-ID: <20150325165004.GD14585@localhost> References: <1427205776-5060-1-git-send-email-hanjun.guo@linaro.org> <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> MIME-Version: 1.0 In-Reply-To: <1427205776-5060-6-git-send-email-hanjun.guo@linaro.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-OriginalArrivalTime: 26 Mar 2015 00:56:33.0175 (UTC) FILETIME=[B3E9EA70:01D0675F] X-MC-Unique: uIXeg5xqR2Cu8p9VQtv9QA-1 Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 24, 2015 at 10:02:38PM +0800, Hanjun Guo wrote: > From: Mark Salter > > The acpi_os_ioremap() function may be used to map normal RAM or IO > regions. The current implementation simply uses ioremap_cache(). This > will work for some architectures, but arm64 ioremap_cache() cannot be > used to map IO regions which don't support caching. So for arm64, use > ioremap() for non-RAM regions. > > CC: Rafael J Wysocki > CC: Catalin Marinas > Tested-by: Robert Richter > Tested-by: Timur Tabi > Acked-by: Robert Richter > Acked-by: Rafael J. Wysocki > Reviewed-by: Grant Likely > Signed-off-by: Mark Salter > Signed-off-by: Hanjun Guo Acked-by: Catalin Marinas