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=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 541A2C433B4 for ; Sun, 11 Apr 2021 11:48:48 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id D159B611F0 for ; Sun, 11 Apr 2021 11:48:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D159B611F0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvmarm-bounces@lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 7390D4B6FC; Sun, 11 Apr 2021 07:48:47 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@redhat.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XxaksJMq+xhj; Sun, 11 Apr 2021 07:48:46 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 6EF044B92B; Sun, 11 Apr 2021 07:48:46 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 06ED74B8ED for ; Sun, 11 Apr 2021 07:48:45 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kwJlXHnrl71J for ; Sun, 11 Apr 2021 07:48:44 -0400 (EDT) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 25A1A4B6FC for ; Sun, 11 Apr 2021 07:48:44 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618141724; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xucYuCl5K1mWx3617CZ/wFEan4m2BNoR8BpLKGBpX28=; b=ZkHgMp3LdFgnYHWHcDfUIvYJ+WXe/D4JUjznrHzOSg9f8aS45ykmogtoqy6gR+DBo6BJLK DSWzDFmzsqBlot+NJnxZf1M3rOMiTASLt8166y7irBc9wz3f/fSUWGGzlaXBGKWOFpjPlG eodbTKyaMcigb7wrEkhJ5Y76MeGzY0A= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-527-BTEAAPHvND-Uc-Ts57am1g-1; Sun, 11 Apr 2021 07:48:39 -0400 X-MC-Unique: BTEAAPHvND-Uc-Ts57am1g-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 07A7218397A6; Sun, 11 Apr 2021 11:48:36 +0000 (UTC) Received: from laptop.redhat.com (ovpn-112-22.ams2.redhat.com [10.36.112.22]) by smtp.corp.redhat.com (Postfix) with ESMTP id B010C5C266; Sun, 11 Apr 2021 11:48:27 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, will@kernel.org, maz@kernel.org, robin.murphy@arm.com, joro@8bytes.org, alex.williamson@redhat.com, tn@semihalf.com, zhukeqian1@huawei.com Subject: [PATCH v13 07/13] vfio: Use capability chains to handle device specific irq Date: Sun, 11 Apr 2021 13:46:53 +0200 Message-Id: <20210411114659.15051-8-eric.auger@redhat.com> In-Reply-To: <20210411114659.15051-1-eric.auger@redhat.com> References: <20210411114659.15051-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Cc: jean-philippe@linaro.org, jacob.jun.pan@linux.intel.com, wangxingang5@huawei.com, lushenming@huawei.com, chenxiang66@hisilicon.com, nicoleotsuka@gmail.com, vivek.gautam@arm.com, vdumpa@nvidia.com, yi.l.liu@intel.com, vsethi@nvidia.com, zhangfei.gao@linaro.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu From: Tina Zhang Caps the number of irqs with fixed indexes and uses capability chains to chain device specific irqs. Signed-off-by: Tina Zhang Signed-off-by: Eric Auger [Eric: Put cap_offset at the end of the vfio_irq_info struct, remove GFX IRQ at the moment and remove any reference to this latter in the commit message] --- --- include/uapi/linux/vfio.h | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index ca8cc796e254..0728b6f3f348 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -708,11 +708,27 @@ struct vfio_irq_info { #define VFIO_IRQ_INFO_MASKABLE (1 << 1) #define VFIO_IRQ_INFO_AUTOMASKED (1 << 2) #define VFIO_IRQ_INFO_NORESIZE (1 << 3) +#define VFIO_IRQ_INFO_FLAG_CAPS (1 << 4) /* Info supports caps */ __u32 index; /* IRQ index */ __u32 count; /* Number of IRQs within this index */ + __u32 cap_offset; /* Offset within info struct of first cap */ }; #define VFIO_DEVICE_GET_IRQ_INFO _IO(VFIO_TYPE, VFIO_BASE + 9) +/* + * The irq type capability allows IRQs unique to a specific device or + * class of devices to be exposed. + * + * The structures below define version 1 of this capability. + */ +#define VFIO_IRQ_INFO_CAP_TYPE 3 + +struct vfio_irq_info_cap_type { + struct vfio_info_cap_header header; + __u32 type; /* global per bus driver */ + __u32 subtype; /* type specific */ +}; + /** * VFIO_DEVICE_SET_IRQS - _IOW(VFIO_TYPE, VFIO_BASE + 10, struct vfio_irq_set) * @@ -814,7 +830,8 @@ enum { VFIO_PCI_MSIX_IRQ_INDEX, VFIO_PCI_ERR_IRQ_INDEX, VFIO_PCI_REQ_IRQ_INDEX, - VFIO_PCI_NUM_IRQS + VFIO_PCI_NUM_IRQS = 5 /* Fixed user ABI, IRQ indexes >=5 use */ + /* device specific cap to define content */ }; /* -- 2.26.3 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm