From patchwork Tue Apr 7 04:31:06 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 6167111 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B79129F72C for ; Tue, 7 Apr 2015 04:29:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D8D75202F8 for ; Tue, 7 Apr 2015 04:29:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED1F42034B for ; Tue, 7 Apr 2015 04:29:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753103AbbDGE3D (ORCPT ); Tue, 7 Apr 2015 00:29:03 -0400 Received: from mga03.intel.com ([134.134.136.65]:1880 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753077AbbDGE27 (ORCPT ); Tue, 7 Apr 2015 00:28:59 -0400 Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga103.jf.intel.com with ESMTP; 06 Apr 2015 21:28:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,536,1422950400"; d="scan'208";a="477525915" Received: from gerry-dev.bj.intel.com ([10.238.158.72]) by FMSMGA003.fm.intel.com with ESMTP; 06 Apr 2015 21:28:56 -0700 From: Jiang Liu To: "Rafael J . Wysocki" , Bjorn Helgaas , Len Brown , Vivek Goyal , Thierry Reding Cc: Jiang Liu , Lv Zheng , LKML , linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, "x86 @ kernel . org" Subject: [RFC 1/7] ACPI/PCI: Enhance ACPI core to support sparse IO space Date: Tue, 7 Apr 2015 12:31:06 +0800 Message-Id: <1428381072-27486-2-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1428381072-27486-1-git-send-email-jiang.liu@linux.intel.com> References: <1428381072-27486-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Enhance ACPI resource parsing interfaces to support sparse IO space, which will be used to share common code between x86 and IA64. 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 0187e0e11bb8..5727c3bf98c9 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 2c5250222278..b9762760ca49 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 */