From patchwork Fri Feb 27 15:00:40 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Nowicki X-Patchwork-Id: 5900991 Return-Path: X-Original-To: patchwork-linux-acpi@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 100DEBF440 for ; Fri, 27 Feb 2015 15:02:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3F4CE2010B for ; Fri, 27 Feb 2015 15:02:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2366820270 for ; Fri, 27 Feb 2015 15:02:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754725AbbB0PCf (ORCPT ); Fri, 27 Feb 2015 10:02:35 -0500 Received: from mail-lb0-f170.google.com ([209.85.217.170]:46560 "EHLO mail-lb0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754900AbbB0PAO (ORCPT ); Fri, 27 Feb 2015 10:00:14 -0500 Received: by lbjf15 with SMTP id f15so17674267lbj.13 for ; Fri, 27 Feb 2015 07:00:13 -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=+/TXhL3K0KQZZYffvno1DF6QE6eXfSh4QLW6TStj4E8=; b=bziaLZv68Q7o05WAL4fikzncKocKApYvuPFWrRp0dFWVNvt/tdpDdCN++cj9JXwV+l HrlaQNaMjltMPtHm6C+OvygA1fxDTlvRhrWGSPWV7U5+WV1Z8/uDlCnUXPy/IgFa6dU4 qOD0+/vrEVi0o3T0d+8h5KbMvNqRGdwlWiKpwt88HYQuUyRfYbSSgdZA3Z54rL9JKUTk AofoCYGjcI2p90u6Ng43jRHtng4Dj1ZcAZ59RbrMKzrEYJLayfXrNkeTwRu9/gZU2dHk vLMU2bd/tw1vxGQCXkMgISRSe5E4HjQLgCGUkJ+QHYEQEprfrHS17HGyRKpzfvaBSy5s qglQ== X-Gm-Message-State: ALoCoQlxjHB9ti2D6WjsCQZY1/Gev9mx6wfOa87r4lIZEqyiLNcJJSDvfLmYK0mKbYMGgCg0jSM6 X-Received: by 10.112.150.200 with SMTP id uk8mr8403663lbb.14.1425049213420; Fri, 27 Feb 2015 07:00:13 -0800 (PST) Received: from tn-HP-4.semihalf.com ([80.82.22.190]) by mx.google.com with ESMTPSA id p7sm886055lap.18.2015.02.27.07.00.10 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 27 Feb 2015 07:00:12 -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 Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, linaro-acpi@lists.linaro.org, Tomasz Nowicki Subject: [PATCH v2 5/9] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization. Date: Fri, 27 Feb 2015 16:00:40 +0100 Message-Id: <1425049244-19331-6-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> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@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 Those two functions are required by ACPI subsystem to make PCI config space accessible. Generic code assume to do nothing for early init call but late init call does as follow: - parse MCFG table and add regions to ECAM resource list - map regions - add regions to iomem_resource 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 a2e2326..1e646fc 100644 --- a/drivers/acpi/mcfg.c +++ b/drivers/acpi/mcfg.c @@ -79,3 +79,23 @@ int __init acpi_parse_mcfg(struct acpi_table_header *header) return 0; } + +void __init __weak pci_mmcfg_early_init(void) +{ + +} + +void __init __weak pci_mmcfg_late_init(void) +{ + struct pci_mmcfg_region *cfg; + + acpi_table_parse(ACPI_SIG_MCFG, acpi_parse_mcfg); + + if (list_empty(&pci_mmcfg_list)) + return; + if (!pci_mmcfg_arch_init()) + free_all_mmcfg(); + + list_for_each_entry(cfg, &pci_mmcfg_list, list) + insert_resource(&iomem_resource, &cfg->res); +}