From nobody Fri Nov 29 18:41:12 2024 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=fail(p=none dis=none) header.from=arm.com Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1632310749874850.6240919616511; Wed, 22 Sep 2021 04:39:09 -0700 (PDT) Received: from list by lists.xenproject.org with outflank-mailman.192581.343091 (Exim 4.92) (envelope-from ) id 1mT0aT-00019a-4W; Wed, 22 Sep 2021 11:38:53 +0000 Received: by outflank-mailman (output) from mailman id 192581.343091; Wed, 22 Sep 2021 11:38:53 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0aT-00019R-1g; Wed, 22 Sep 2021 11:38:53 +0000 Received: by outflank-mailman (input) for mailman id 192581; Wed, 22 Sep 2021 11:38:51 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mT0aR-000197-LW for xen-devel@lists.xenproject.org; Wed, 22 Sep 2021 11:38:51 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id a836ae52-1b99-11ec-b970-12813bfff9fa; Wed, 22 Sep 2021 11:38:50 +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 7E0A911B3; Wed, 22 Sep 2021 04:38:50 -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 7DFC93F719; Wed, 22 Sep 2021 04:38:49 -0700 (PDT) X-Outflank-Mailman: Message body and most headers restored to incoming version 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: a836ae52-1b99-11ec-b970-12813bfff9fa From: Rahul Singh To: xen-devel@lists.xenproject.org Cc: bertrand.marquis@arm.com, rahul.singh@arm.com, andre.przywara@arm.com, Stefano Stabellini , Julien Grall , Volodymyr Babchuk Subject: [PATCH v2 09/17] xen/arm: Add support for PCI init to initialize the PCI driver. Date: Wed, 22 Sep 2021 12:34:55 +0100 Message-Id: <000832623dc7fb429db4b4517583f16affdba35b.1632307952.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: X-ZM-MESSAGEID: 1632310750627100001 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" pci_init(..) will be called during xen startup to initialize and probe the PCI host-bridge driver. Signed-off-by: Rahul Singh --- Change in v2: - ACPI init function to return int - pci_segments_init() called before dt/acpi init --- xen/arch/arm/pci/pci.c | 54 ++++++++++++++++++++++++++++++++++++ xen/include/asm-arm/device.h | 1 + 2 files changed, 55 insertions(+) diff --git a/xen/arch/arm/pci/pci.c b/xen/arch/arm/pci/pci.c index a7a7bc3213..71fa532842 100644 --- a/xen/arch/arm/pci/pci.c +++ b/xen/arch/arm/pci/pci.c @@ -12,6 +12,10 @@ * along with this program. If not, see . */ =20 +#include +#include +#include +#include #include =20 /* @@ -22,6 +26,56 @@ int arch_pci_clean_pirqs(struct domain *d) return 0; } =20 +static int __init dt_pci_init(void) +{ + struct dt_device_node *np; + int rc; + + dt_for_each_device_node(dt_host, np) + { + rc =3D device_init(np, DEVICE_PCI, NULL); + if( !rc ) + continue; + /* + * Ignore the following error codes: + * - EBADF: Indicate the current is not an pci + * - ENODEV: The pci device is not present or cannot be used by + * Xen. + */ + else if ( rc !=3D -EBADF && rc !=3D -ENODEV ) + { + printk(XENLOG_ERR "No driver found in XEN or driver init error= .\n"); + return rc; + } + } + + return 0; +} + +#ifdef CONFIG_ACPI +static int __init acpi_pci_init(void) +{ + printk(XENLOG_ERR "ACPI pci init not supported \n"); + return 0; +} +#else +static inline int __init acpi_pci_init(void) +{ + return -EINVAL; +} +#endif + +static int __init pci_init(void) +{ + pci_segments_init(); + + if ( acpi_disabled ) + return dt_pci_init(); + else + return acpi_pci_init(); +} +__initcall(pci_init); + /* * Local variables: * mode: C diff --git a/xen/include/asm-arm/device.h b/xen/include/asm-arm/device.h index ee7cff2d44..5ecd5e7bd1 100644 --- a/xen/include/asm-arm/device.h +++ b/xen/include/asm-arm/device.h @@ -34,6 +34,7 @@ enum device_class DEVICE_SERIAL, DEVICE_IOMMU, DEVICE_GIC, + DEVICE_PCI, /* Use for error */ DEVICE_UNKNOWN, }; --=20 2.17.1