From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiang Liu Subject: [Patch v7 1/7] ACPI/PCI: Enhance ACPI core to support sparse IO space Date: Wed, 14 Oct 2015 14:29:36 +0800 Message-ID: <1444804182-6596-2-git-send-email-jiang.liu@linux.intel.com> References: <1444804182-6596-1-git-send-email-jiang.liu@linux.intel.com> Return-path: In-Reply-To: <1444804182-6596-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org To: Bjorn Helgaas , "Rafael J . Wysocki" , Lorenzo Pieralisi , Marc Zyngier , Hanjun Guo , Liviu Dudau Cc: Jiang Liu , linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org List-Id: linux-acpi@vger.kernel.org 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 Reviewed-by: Hanjun Guo Signed-off-by: Liu Jiang --- 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 15d22db05054..cdc5c2599beb 100644 --- a/drivers/acpi/resource.c +++ b/drivers/acpi/resource.c @@ -119,7 +119,7 @@ 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; @@ -131,6 +131,8 @@ 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, @@ -138,7 +140,7 @@ 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); } /** @@ -231,7 +233,8 @@ 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 */ -- 1.7.10.4