From patchwork Fri Feb 27 15:00:43 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Nowicki X-Patchwork-Id: 5901151 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 B0761BF440 for ; Fri, 27 Feb 2015 15:06:20 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2E6A020263 for ; Fri, 27 Feb 2015 15:06:15 +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 623682022D for ; Fri, 27 Feb 2015 15:06:14 +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 1YRMRu-0003WE-FE; Fri, 27 Feb 2015 15:03:30 +0000 Received: from mail-lb0-f171.google.com ([209.85.217.171]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YRMPC-0001S6-EL for linux-arm-kernel@lists.infradead.org; Fri, 27 Feb 2015 15:00:43 +0000 Received: by lbvp9 with SMTP id p9so17852177lbv.0 for ; Fri, 27 Feb 2015 07:00:20 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=WGngRL/1L3QZEDaWVSy41z2+YK40fjtaxbTTxNXuZi4=; b=e2jPywLF4nOK7pWZwDkjtFcnSIcsjuTHBCxGMt3wVHccojF2JWYWkQ5iLuJzFKYNs0 H7LcCzJvt5SvWj9ogUTRrAyUi3A+l0ec+nlanJCFR03iQH5/xXtAqpCor28nSpeH1LD3 1Iy2Xn2cks0S/VceesxP3CShdt4GwJLOwiDWKocW1ZaC41cWPrZQ8FM3NOx6S3r15rHD jYfWvGVZ+jx1T71dAm+jrWlKpZpQXsvVBbotBKUa12qhoV3Huy0u29LorUKN9ISHtAtJ Ny2zyINsbVfBA487edeiUxp1n3cmo6glkeCIe0C2NYBu6l8S/m8lQ0Sb1xtmbQG7znkg NIzQ== X-Gm-Message-State: ALoCoQmaRr8faXECAT+XK/V0awy6HB9Wdt6Zm7sq7rasz1Yg3HHC6Px6hOTA8xFqEuWWT27NWV6E X-Received: by 10.112.39.69 with SMTP id n5mr12962785lbk.1.1425049220033; Fri, 27 Feb 2015 07:00:20 -0800 (PST) Received: from tn-HP-4.semihalf.com ([80.82.22.190]) by mx.google.com with ESMTPSA id p7sm886055lap.18.2015.02.27.07.00.18 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 27 Feb 2015 07:00:19 -0800 (PST) From: Tomasz Nowicki To: bhelgaas@google.com, wangyijing@huawei.com, arnd@arndb.de, hanjun.guo@linaro.org, Liviu.Dudau@arm.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, rjw@rjwysocki.net, al.stone@linaro.org Subject: [PATCH v2 8/9] pci, acpi, mcfg: Share ACPI PCI config space accessors. Date: Fri, 27 Feb 2015 16:00:43 +0100 Message-Id: <1425049244-19331-9-git-send-email-tomasz.nowicki@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1425049244-19331-1-git-send-email-tomasz.nowicki@linaro.org> References: <1425049244-19331-1-git-send-email-tomasz.nowicki@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150227_070042_734331_399B91B4 X-CRM114-Status: UNSURE ( 9.03 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.7 (/) Cc: linaro-acpi@lists.linaro.org, linux-pci@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, Tomasz Nowicki , linux-acpi@vger.kernel.org, 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 MCFG can be used perfectly for all architectures which support ACPI. ACPI mandates MCFG to describe PCI config space ranges which means we should use MMCONFIG accessors by default. Signed-off-by: Tomasz Nowicki --- drivers/acpi/mcfg.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/acpi/mcfg.c b/drivers/acpi/mcfg.c index 1e646fc..e285f62 100644 --- a/drivers/acpi/mcfg.c +++ b/drivers/acpi/mcfg.c @@ -13,6 +13,26 @@ #define PREFIX "MCFG: " +/* + * raw_pci_read/write - ACPI PCI config space accessors. + * + * ACPI spec defines MCFG table as the way we can describe access to PCI config + * space, so let MCFG be default (__weak). + * + * If platform needs more fancy stuff, should provides its own implementation. + */ +int __weak raw_pci_read(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 *val) +{ + return pci_mmcfg_read(domain, bus, devfn, reg, len, val); +} + +int __weak raw_pci_write(unsigned int domain, unsigned int bus, + unsigned int devfn, int reg, int len, u32 val) +{ + return pci_mmcfg_write(domain, bus, devfn, reg, len, val); +} + static int __init acpi_mcfg_check_entry(struct acpi_table_mcfg *mcfg, struct acpi_mcfg_allocation *cfg) {