From patchwork Thu Aug 19 12:02:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rahul Singh X-Patchwork-Id: 12446973 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 A3937C4338F for ; Thu, 19 Aug 2021 12:08:20 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 6489561152 for ; Thu, 19 Aug 2021 12:08:20 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6489561152 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.168667.307938 (Exim 4.92) (envelope-from ) id 1mGgqD-0008DQ-Qc; Thu, 19 Aug 2021 12:08:13 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 168667.307938; Thu, 19 Aug 2021 12:08:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mGgqD-0008DJ-NI; Thu, 19 Aug 2021 12:08:13 +0000 Received: by outflank-mailman (input) for mailman id 168667; Thu, 19 Aug 2021 12:08:13 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mGgqC-00080Z-Vu for xen-devel@lists.xenproject.org; Thu, 19 Aug 2021 12:08:13 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 6f1d4a33-0e66-43fc-8496-4977d88b3586; Thu, 19 Aug 2021 12:08:10 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C101031B; Thu, 19 Aug 2021 05:08:09 -0700 (PDT) Received: from e109506.cambridge.arm.com (e109506.cambridge.arm.com [10.1.199.1]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D9FA93F70D; Thu, 19 Aug 2021 05:08:08 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 6f1d4a33-0e66-43fc-8496-4977d88b3586 From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v1 10/14] xen/arm: Discovering PCI devices and add the PCI devices in XEN. Date: Thu, 19 Aug 2021 13:02:50 +0100 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Hardware domain is in charge of doing the PCI enumeration and will discover the PCI devices and then will communicate to XEN via hyper call PHYSDEVOP_pci_device_add to add the PCI devices in XEN. Signed-off-by: Rahul Singh --- xen/arch/arm/physdev.c | 39 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 36 insertions(+), 3 deletions(-) diff --git a/xen/arch/arm/physdev.c b/xen/arch/arm/physdev.c index e91355fe22..ccce8f0eba 100644 --- a/xen/arch/arm/physdev.c +++ b/xen/arch/arm/physdev.c @@ -9,12 +9,45 @@ #include #include #include - +#include +#include int do_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg) { - gdprintk(XENLOG_DEBUG, "PHYSDEVOP cmd=%d: not implemented\n", cmd); - return -ENOSYS; + int ret = 0; + + switch ( cmd ) + { +#ifdef CONFIG_HAS_PCI + case PHYSDEVOP_pci_device_add: { + struct physdev_pci_device_add add; + struct pci_dev_info pdev_info; + nodeid_t node = NUMA_NO_NODE; + + ret = -EFAULT; + if ( copy_from_guest(&add, arg, 1) != 0 ) + break; + + pdev_info.is_extfn = !!(add.flags & XEN_PCI_DEV_EXTFN); + if ( add.flags & XEN_PCI_DEV_VIRTFN ) + { + pdev_info.is_virtfn = 1; + pdev_info.physfn.bus = add.physfn.bus; + pdev_info.physfn.devfn = add.physfn.devfn; + } + else + pdev_info.is_virtfn = 0; + + ret = pci_add_device(add.seg, add.bus, add.devfn, &pdev_info, node); + break; + } +#endif + default: + gdprintk(XENLOG_DEBUG, "PHYSDEVOP cmd=%d: not implemented\n", cmd); + ret = -ENOSYS; + } + + return ret; } /*