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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 B60DEC3A589 for ; Fri, 16 Aug 2019 02:36:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 83FBE206C1 for ; Fri, 16 Aug 2019 02:36:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726898AbfHPCgb (ORCPT ); Thu, 15 Aug 2019 22:36:31 -0400 Received: from mga07.intel.com ([134.134.136.100]:39512 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726427AbfHPCgB (ORCPT ); Thu, 15 Aug 2019 22:36:01 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Aug 2019 19:35:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,391,1559545200"; d="scan'208";a="194894834" Received: from gvt.bj.intel.com ([10.238.158.180]) by fmsmga001.fm.intel.com with ESMTP; 15 Aug 2019 19:35:45 -0700 From: Tina Zhang To: intel-gvt-dev@lists.freedesktop.org Cc: Tina Zhang , kraxel@redhat.com, alex.williamson@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, hang.yuan@intel.com, zhiyuan.lv@intel.com, Eric Auger Subject: [PATCH v5 1/6] vfio: Define device specific irq type capability Date: Fri, 16 Aug 2019 10:35:23 +0800 Message-Id: <20190816023528.30210-2-tina.zhang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190816023528.30210-1-tina.zhang@intel.com> References: <20190816023528.30210-1-tina.zhang@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cap the number of irqs with fixed indexes and use capability chains to chain device specific irqs. Signed-off-by: Tina Zhang Signed-off-by: Eric Auger --- 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 02bb7ad6e986..d83c9f136a5b 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -444,11 +444,27 @@ 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) * @@ -550,7 +566,8 @@ 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 */ }; /* -- 2.17.1