From patchwork Fri Mar 25 13:48:48 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shannon Zhao X-Patchwork-Id: 8671701 Return-Path: X-Original-To: patchwork-xen-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5CB4CC0554 for ; Fri, 25 Mar 2016 13:51:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8A26620340 for ; Fri, 25 Mar 2016 13:51:56 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A0128202E9 for ; Fri, 25 Mar 2016 13:51:55 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ajS84-0001yp-0C; Fri, 25 Mar 2016 13:50:20 +0000 Received: from mail6.bemta6.messagelabs.com ([85.158.143.247]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1ajS82-0001vU-OU for xen-devel@lists.xen.org; Fri, 25 Mar 2016 13:50:18 +0000 Received: from [85.158.143.35] by server-2.bemta-6.messagelabs.com id 79/98-09532-A1245F65; Fri, 25 Mar 2016 13:50:18 +0000 X-Env-Sender: shannon.zhao@linaro.org X-Msg-Ref: server-13.tower-21.messagelabs.com!1458913816!6003863!1 X-Originating-IP: [209.85.220.49] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 8.11; banners=-,-,- X-VirusChecked: Checked Received: (qmail 8119 invoked from network); 25 Mar 2016 13:50:17 -0000 Received: from mail-pa0-f49.google.com (HELO mail-pa0-f49.google.com) (209.85.220.49) by server-13.tower-21.messagelabs.com with AES128-GCM-SHA256 encrypted SMTP; 25 Mar 2016 13:50:17 -0000 Received: by mail-pa0-f49.google.com with SMTP id fl4so46878611pad.0 for ; Fri, 25 Mar 2016 06:50:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=00RjiU8c3PsvszX5Pjn3Tx60TF4Yk0i6Xsyn8xDqEKY=; b=DXAvitWSQRSpslB85uoQSM+J5Th9uR7iVkPMrdib3NI9J/IfxYOWZUqf8U6e55mtJE BtFhxZvfdRUP7ci4gVKIW70WiqsvTk/x4CHMIfLYRj+4cUloMnADwMAkLxd3opEBx/lt a4TmkyxEd8JzKO2IcHNKhCIJKBgnFyxB5Skyk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=00RjiU8c3PsvszX5Pjn3Tx60TF4Yk0i6Xsyn8xDqEKY=; b=G7omIJ9NRUgK60NFFjDv1rzdNQR0+cfNsBZHHxiLSzj4/9PSUjH6fAwPffRqQwwV1I xMAI+3H5CjgpTeiOryT2yuXhYyMH1Az8a1Bw9K1Uocu+Id0amlzcY2kNWmXwUuuXCvK1 j5tO4d5NcEckBHPThTifK94WvK4JUvTBTgi3P7aiaLF2QE7q+kCZOA4vAgRvpm0N4SDC Vn1Kb4ZSwdXN+GdOrxJxPpCo0xm35u9D+azRuaDMhc0u+cOGhF8/mpFUoirZggSG0Hbd QAZJggR532aqv9l6uDe2jL3eoqv5Ke1ddcPB/TRtd+El/yXF94xUErOPRmrz23y4BCxy qGsg== X-Gm-Message-State: AD7BkJJ5XQWOGzZIYuRjJsi4ykmTnNeGMvpMhWwZPPUiSbMpa/hosNVbXchNkOGHXm82fKjL X-Received: by 10.66.193.131 with SMTP id ho3mr21043757pac.154.1458913816005; Fri, 25 Mar 2016 06:50:16 -0700 (PDT) Received: from localhost.localdomain ([45.56.152.2]) by smtp.gmail.com with ESMTPSA id w20sm16744178pfi.31.2016.03.25.06.50.12 (version=TLSv1/SSLv3 cipher=OTHER); Fri, 25 Mar 2016 06:50:15 -0700 (PDT) From: Shannon Zhao To: xen-devel@lists.xen.org Date: Fri, 25 Mar 2016 21:48:48 +0800 Message-Id: <1458913735-2678-16-git-send-email-shannon.zhao@linaro.org> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1458913735-2678-1-git-send-email-shannon.zhao@linaro.org> References: <1458913735-2678-1-git-send-email-shannon.zhao@linaro.org> Cc: julien.grall@arm.com, shannon.zhao@linaro.org, stefano.stabellini@citrix.com, peter.huangpeng@huawei.com, zhaoshenglong@huawei.com Subject: [Xen-devel] [PATCH v7 15/22] arm/acpi: Permit access all Xen unused SPIs for Dom0 X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Allow DOM0 to use all SPIs but the ones used by Xen. Then when Dom0 configures the interrupt, it could set the interrupt type and route it to Dom0. Signed-off-by: Shannon Zhao Reviewed-by: Stefano Stabellini Acked-by: Julien Grall --- v7: add a TODO for SMMU used SPIs --- xen/arch/arm/domain_build.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 58a44ff..28b85e5 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1359,6 +1359,37 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) #ifdef CONFIG_ACPI #define ACPI_DOM0_FDT_MIN_SIZE 4096 +static int acpi_permit_spi_access(struct domain *d) +{ + int i, res; + struct irq_desc *desc; + + /* + * Here just permit Dom0 to access the SPIs which Xen doesn't use. Then when + * Dom0 configures the interrupt, set the interrupt type and route it to + * Dom0. + */ + for( i = NR_LOCAL_IRQS; i < vgic_num_irqs(d); i++ ) + { + /* + * TODO: Exclude the SPIs SMMU uses which should not be routed to Dom0. + */ + desc = irq_to_desc(i); + if ( desc->action != NULL) + continue; + + res = irq_permit_access(d, i); + if ( res ) + { + printk(XENLOG_ERR "Unable to permit to dom%u access to IRQ %u\n", + d->domain_id, i); + return res; + } + } + + return 0; +} + static int acpi_make_chosen_node(const struct kernel_info *kinfo) { int res; @@ -1884,6 +1915,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) if ( rc != 0 ) return rc; + rc = acpi_permit_spi_access(d); + if ( rc != 0 ) + return rc; + return 0; } #else