Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757445AbbEVNgK (ORCPT ); Fri, 22 May 2015 09:36:10 -0400 Received: from mail-pd0-f174.google.com ([209.85.192.174]:36003 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757378AbbEVNf7 (ORCPT ); Fri, 22 May 2015 09:35:59 -0400 Message-ID: <555F30AC.2090904@linaro.org> Date: Fri, 22 May 2015 21:35:40 +0800 From: Hanjun Guo User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 To: Jiang Liu , "Rafael J . Wysocki" , Bjorn Helgaas , Marc Zyngier , Yijing Wang , Len Brown , Vivek Goyal , Thierry Reding , Jakub Sitnicki CC: Lv Zheng , LKML , linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, "x86 @ kernel . org" , linux-arm-kernel@lists.infradead.org Subject: Re: [Patch v3 1/7] ACPI/PCI: Enhance ACPI core to support sparse IO space References: <1431593803-5213-1-git-send-email-jiang.liu@linux.intel.com> <1431593803-5213-2-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1431593803-5213-2-git-send-email-jiang.liu@linux.intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2811 Lines: 74 On 2015年05月14日 16:56, Jiang Liu wrote: > Enhance ACPI resource parsing interfaces to support sparse IO space, > which will be used to share common code between x86 and IA64 later. > > Tested-by: Tony Luck > Signed-off-by: Jiang Liu > --- > drivers/acpi/resource.c | 9 ++++++--- > include/linux/ioport.h | 1 + > 2 files changed, 7 insertions(+), 3 deletions(-) > > diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c > index 8244f013f210..fdcc73dad2c1 100644 > --- a/drivers/acpi/resource.c > +++ b/drivers/acpi/resource.c > @@ -123,7 +123,7 @@ bool acpi_dev_resource_memory(struct acpi_resource *ares, struct resource *res) > EXPORT_SYMBOL_GPL(acpi_dev_resource_memory); > > static void acpi_dev_ioresource_flags(struct resource *res, u64 len, > - u8 io_decode) > + u8 io_decode, u8 translation_type) > { > res->flags = IORESOURCE_IO; > > @@ -135,6 +135,8 @@ static void acpi_dev_ioresource_flags(struct resource *res, u64 len, > > if (io_decode == ACPI_DECODE_16) > res->flags |= IORESOURCE_IO_16BIT_ADDR; > + if (translation_type == ACPI_SPARSE_TRANSLATION) > + res->flags |= IORESOURCE_IO_SPARSE; > } > > static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, > @@ -142,7 +144,7 @@ static void acpi_dev_get_ioresource(struct resource *res, u64 start, u64 len, > { > res->start = start; > res->end = start + len - 1; > - acpi_dev_ioresource_flags(res, len, io_decode); > + acpi_dev_ioresource_flags(res, len, io_decode, 0); > } > > /** > @@ -227,7 +229,8 @@ static bool acpi_decode_space(struct resource_win *win, > acpi_dev_memresource_flags(res, len, wp); > break; > case ACPI_IO_RANGE: > - acpi_dev_ioresource_flags(res, len, iodec); > + acpi_dev_ioresource_flags(res, len, iodec, > + addr->info.io.translation_type); > break; > case ACPI_BUS_NUMBER_RANGE: > res->flags = IORESOURCE_BUS; > diff --git a/include/linux/ioport.h b/include/linux/ioport.h > index 388e3ae94f7a..24bea087e7af 100644 > --- a/include/linux/ioport.h > +++ b/include/linux/ioport.h > @@ -94,6 +94,7 @@ struct resource { > /* PnP I/O specific bits (IORESOURCE_BITS) */ > #define IORESOURCE_IO_16BIT_ADDR (1<<0) > #define IORESOURCE_IO_FIXED (1<<1) > +#define IORESOURCE_IO_SPARSE (1<<2) > > /* PCI ROM control bits (IORESOURCE_BITS) */ > #define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */ Reviewed-by: Hanjun Guo Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/