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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F6A8C433EF for ; Tue, 28 Sep 2021 18:22:05 +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 4A03B611EF for ; Tue, 28 Sep 2021 18:22:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 4A03B611EF 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.198253.351651 (Exim 4.92) (envelope-from ) id 1mVHjp-0002my-P3; Tue, 28 Sep 2021 18:21:57 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 198253.351651; Tue, 28 Sep 2021 18:21:57 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVHjp-0002mr-M6; Tue, 28 Sep 2021 18:21:57 +0000 Received: by outflank-mailman (input) for mailman id 198253; Tue, 28 Sep 2021 18:21:57 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVHjo-0002iO-W4 for xen-devel@lists.xenproject.org; Tue, 28 Sep 2021 18:21:57 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 30f8032f-a30a-47aa-b339-519f9609134c; Tue, 28 Sep 2021 18:21:56 +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 CEE896D; Tue, 28 Sep 2021 11:21:55 -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 CF1FF3F793; Tue, 28 Sep 2021 11:21:54 -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: 30f8032f-a30a-47aa-b339-519f9609134c 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 v3 09/17] xen/arm: Add support for PCI init to initialize the PCI driver. Date: Tue, 28 Sep 2021 19:18:18 +0100 Message-Id: <31f2e3baf45f059a8ddac22fefc7cdfe1bc63ef5.1632847120.git.rahul.singh@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: pci_init(..) will be called during xen startup to initialize and probe the PCI host-bridge driver. Signed-off-by: Rahul Singh --- Change in v3: - Some nit for device_init(..) return logic - Remove inline from acpi_pci_init(..) - Modify return value for apci_pci_init(..) to return -EOPNOTSUPP Change in v2: - ACPI init function to return int - pci_segments_init() called before dt/acpi init --- xen/arch/arm/pci/pci.c | 51 ++++++++++++++++++++++++++++++++++++ xen/include/asm-arm/device.h | 1 + 2 files changed, 52 insertions(+) diff --git a/xen/arch/arm/pci/pci.c b/xen/arch/arm/pci/pci.c index a7a7bc3213..e359bab9ea 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 . */ +#include +#include +#include +#include #include /* @@ -22,6 +26,53 @@ int arch_pci_clean_pirqs(struct domain *d) return 0; } +static int __init dt_pci_init(void) +{ + struct dt_device_node *np; + int rc; + + dt_for_each_device_node(dt_host, np) + { + rc = device_init(np, DEVICE_PCI, NULL); + /* + * Ignore the following error codes: + * - EBADF: Indicate the current device is not a pci device. + * - ENODEV: The pci device is not present or cannot be used by + * Xen. + */ + if( !rc || rc == -EBADF || rc == -ENODEV ) + continue; + + return rc; + } + + return 0; +} + +#ifdef CONFIG_ACPI +static int __init acpi_pci_init(void) +{ + printk(XENLOG_ERR "ACPI pci init not supported \n"); + return -EOPNOTSUPP; +} +#else +static 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, }; -- 2.17.1