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=-9.8 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 0565DC31E40 for ; Fri, 9 Aug 2019 15:22:56 +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 D3C1720C01 for ; Fri, 9 Aug 2019 15:22:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D3C1720C01 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.org 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 66FDEDAF; Fri, 9 Aug 2019 15:22:42 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 7CFE5D38 for ; Fri, 9 Aug 2019 15:22:40 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 8588D8A6 for ; Fri, 9 Aug 2019 15:22:38 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id F07A61C7; Fri, 9 Aug 2019 17:22:35 +0200 (CEST) From: Joerg Roedel To: Joerg Roedel Subject: [PATCH 1/3] iommu: Print default domain type on boot Date: Fri, 9 Aug 2019 17:22:31 +0200 Message-Id: <20190809152233.2829-2-joro@8bytes.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190809152233.2829-1-joro@8bytes.org> References: <20190809152233.2829-1-joro@8bytes.org> Cc: Thomas.Lendacky@amd.com, Joerg Roedel , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, bp@alien8.de 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 From: Joerg Roedel Introduce a subsys_initcall for IOMMU code and use it to print the default domain type at boot. Signed-off-by: Joerg Roedel --- drivers/iommu/iommu.c | 30 +++++++++++++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 0c674d80c37f..b57ce00c1310 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -80,12 +80,40 @@ struct iommu_group_attribute iommu_group_attr_##_name = \ static LIST_HEAD(iommu_device_list); static DEFINE_SPINLOCK(iommu_device_lock); +/* + * Use a function instead of an array here because the domain-type is a + * bit-field, so an array would waste memory. + */ +static const char *iommu_domain_type_str(unsigned int t) +{ + switch (t) { + case IOMMU_DOMAIN_BLOCKED: + return "Blocked"; + case IOMMU_DOMAIN_IDENTITY: + return "Passthrough"; + case IOMMU_DOMAIN_UNMANAGED: + return "Unmanaged"; + case IOMMU_DOMAIN_DMA: + return "Translated"; + default: + return "Unknown"; + } +} + +static int __init iommu_subsys_init(void) +{ + pr_info("Default domain type: %s\n", + iommu_domain_type_str(iommu_def_domain_type)); + + return 0; +} +subsys_initcall(iommu_subsys_init); + int iommu_device_register(struct iommu_device *iommu) { spin_lock(&iommu_device_lock); list_add_tail(&iommu->list, &iommu_device_list); spin_unlock(&iommu_device_lock); - return 0; } -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu