From patchwork Thu May 14 08:56:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Liu X-Patchwork-Id: 6403461 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id EEC64BEEE1 for ; Thu, 14 May 2015 08:59:05 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1BF152024D for ; Thu, 14 May 2015 08:59:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 47B44201ED for ; Thu, 14 May 2015 08:59:04 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1YsowN-00046F-Di; Thu, 14 May 2015 08:56:27 +0000 Received: from mga11.intel.com ([192.55.52.93]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Ysov0-00026n-PQ for linux-arm-kernel@lists.infradead.org; Thu, 14 May 2015 08:55:03 +0000 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 14 May 2015 01:54:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,426,1427785200"; d="scan'208";a="710044258" Received: from gerry-dev.bj.intel.com ([10.238.158.61]) by fmsmga001.fm.intel.com with ESMTP; 14 May 2015 01:54:38 -0700 From: Jiang Liu To: "Rafael J . Wysocki" , Bjorn Helgaas , Marc Zyngier , Hanjun Guo , Yijing Wang , Len Brown , Vivek Goyal , Thierry Reding , Jakub Sitnicki Subject: [Patch v3 1/7] ACPI/PCI: Enhance ACPI core to support sparse IO space Date: Thu, 14 May 2015 16:56:37 +0800 Message-Id: <1431593803-5213-2-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1431593803-5213-1-git-send-email-jiang.liu@linux.intel.com> References: <1431593803-5213-1-git-send-email-jiang.liu@linux.intel.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150514_015502_915048_AAD17CB4 X-CRM114-Status: GOOD ( 11.58 ) X-Spam-Score: -5.0 (-----) Cc: linux-pci@vger.kernel.org, "x86 @ kernel . org" , LKML , linux-acpi@vger.kernel.org, Lv Zheng , Jiang Liu , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 later. Tested-by: Tony Luck Signed-off-by: Jiang Liu Reviewed-by: Hanjun Guo --- 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 */