From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9C00C282E5 for ; Sat, 25 May 2019 05:49:06 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8E55B21851 for ; Sat, 25 May 2019 05:49:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8E55B21851 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 2E1B4A5E; Sat, 25 May 2019 05:48:55 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B3FAB481 for ; Sat, 25 May 2019 05:48:53 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 64657A9 for ; Sat, 25 May 2019 05:48:53 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 May 2019 22:48:53 -0700 X-ExtLoop1: 1 Received: from allen-box.sh.intel.com ([10.239.159.136]) by fmsmga006.fm.intel.com with ESMTP; 24 May 2019 22:48:50 -0700 From: Lu Baolu To: David Woodhouse , Joerg Roedel Subject: [PATCH v4 03/15] iommu/vt-d: Expose ISA direct mapping region via iommu_get_resv_regions Date: Sat, 25 May 2019 13:41:24 +0800 Message-Id: <20190525054136.27810-4-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190525054136.27810-1-baolu.lu@linux.intel.com> References: <20190525054136.27810-1-baolu.lu@linux.intel.com> Cc: kevin.tian@intel.com, ashok.raj@intel.com, dima@arista.com, tmurphy@arista.com, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org To support mapping ISA region via iommu_group_create_direct_mappings, make sure its exposed by iommu_get_resv_regions. Signed-off-by: James Sewart Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 4d0fa3097f5d..c42317e27b0c 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -5520,6 +5520,20 @@ static void intel_iommu_get_resv_regions(struct device *device, } rcu_read_unlock(); +#ifdef CONFIG_INTEL_IOMMU_FLOPPY_WA + if (dev_is_pci(device)) { + struct pci_dev *pdev = to_pci_dev(device); + + if ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA) { + reg = iommu_alloc_resv_region(0, 1UL << 24, 0, + IOMMU_RESV_DIRECT, + GFP_KERNEL); + if (reg) + list_add_tail(®->list, head); + } + } +#endif /* CONFIG_INTEL_IOMMU_FLOPPY_WA */ + reg = iommu_alloc_resv_region(IOAPIC_RANGE_START, IOAPIC_RANGE_END - IOAPIC_RANGE_START + 1, 0, IOMMU_RESV_MSI, GFP_KERNEL); -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu