From patchwork Wed Mar 11 14:12:45 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomasz Nowicki X-Patchwork-Id: 449026 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 1DCBC140142 for ; Thu, 12 Mar 2015 01:16:04 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752242AbbCKOQB (ORCPT ); Wed, 11 Mar 2015 10:16:01 -0400 Received: from mail-la0-f50.google.com ([209.85.215.50]:33613 "EHLO mail-la0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752211AbbCKOMq (ORCPT ); Wed, 11 Mar 2015 10:12:46 -0400 Received: by labmn12 with SMTP id mn12so9126170lab.0 for ; Wed, 11 Mar 2015 07:12:44 -0700 (PDT) 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=ezV1hvmdz572REPYVr52qVFNYA15xs0ef2WcB2hFVKs1JGDTPzVa0rBslodrwToIm1 2pBwYoDeP7WYRSIU0G4aNxci4k3odCaJS6C77Y3FVfvl+m3BPn9GjBtsmMSrl6Y5NE/m ozjb8Nz7MuR0ytaSfYQh2d6kHh36E0lYNFzzdy8aTB5Poljr15YXrpMWVGwTVU4dpYMT 2ZPHxuObICX0NKCDDEMT+dIC7Mri7dJV9GsBG2WcaswLm3q/yiEUz6zl6uQtLkVDrw4Z 0UwzK8S67TOXv2ucpSUv5ZjSmGS+vSwzhYNeElff8f2KjnhZJMwvZd9oicAm37wRgXH9 NxMg== X-Gm-Message-State: ALoCoQmHBwRkewQ7Rsss004OC9dqs19fP8LKMkUSgIhPCknbU4t3a0XE9l1/rYrlpz/CfGphLCfN X-Received: by 10.152.234.108 with SMTP id ud12mr15116242lac.81.1426083164856; Wed, 11 Mar 2015 07:12:44 -0700 (PDT) Received: from tn-HP-4.semihalf.com (cardhu.semihalf.com. [213.17.239.108]) by mx.google.com with ESMTPSA id x4sm746600lba.22.2015.03.11.07.12.41 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 11 Mar 2015 07:12:44 -0700 (PDT) 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 v4 5/9] pci, acpi, mcfg: Provide generic implementation of MCFG code initialization. Date: Wed, 11 Mar 2015 15:12:45 +0100 Message-Id: <1426083169-8698-6-git-send-email-tomasz.nowicki@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1426083169-8698-1-git-send-email-tomasz.nowicki@linaro.org> References: <1426083169-8698-1-git-send-email-tomasz.nowicki@linaro.org> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org 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); +}