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 69020C433F5 for ; Fri, 15 Oct 2021 07:15:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FCC661073 for ; Fri, 15 Oct 2021 07:15:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236025AbhJOHRl (ORCPT ); Fri, 15 Oct 2021 03:17:41 -0400 Received: from out4436.biz.mail.alibaba.com ([47.88.44.36]:46959 "EHLO out4436.biz.mail.alibaba.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235998AbhJOHRe (ORCPT ); Fri, 15 Oct 2021 03:17:34 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04395;MF=wuzongyong@linux.alibaba.com;NM=1;PH=DS;RN=6;SR=0;TI=SMTPD_---0Us6A078_1634282107; Received: from localhost.localdomain(mailfrom:wuzongyong@linux.alibaba.com fp:SMTPD_---0Us6A078_1634282107) by smtp.aliyun-inc.com(127.0.0.1); Fri, 15 Oct 2021 15:15:17 +0800 From: Wu Zongyong To: wuzongyong@linux.alibaba.com, jasowang@redhat.com, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, mst@redhat.com Cc: wei.yang1@linux.alibaba.com Subject: [PATCH v5 3/8] vp_vdpa: add vq irq offloading support Date: Fri, 15 Oct 2021 15:14:56 +0800 Message-Id: <5a3bccd4bf8724b4a94caf60fcff1d6b8f8fe09b.1634281805.git.wuzongyong@linux.alibaba.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch implements the get_vq_irq() callback for virtio pci devices to allow irq offloading. Signed-off-by: Wu Zongyong Acked-by: Jason Wang Signed-off-by: Wu Zongyong --- drivers/vdpa/virtio_pci/vp_vdpa.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/vdpa/virtio_pci/vp_vdpa.c b/drivers/vdpa/virtio_pci/vp_vdpa.c index 5bcd00246d2e..e3ff7875e123 100644 --- a/drivers/vdpa/virtio_pci/vp_vdpa.c +++ b/drivers/vdpa/virtio_pci/vp_vdpa.c @@ -76,6 +76,17 @@ static u8 vp_vdpa_get_status(struct vdpa_device *vdpa) return vp_modern_get_status(mdev); } +static int vp_vdpa_get_vq_irq(struct vdpa_device *vdpa, u16 idx) +{ + struct vp_vdpa *vp_vdpa = vdpa_to_vp(vdpa); + int irq = vp_vdpa->vring[idx].irq; + + if (irq == VIRTIO_MSI_NO_VECTOR) + return -EINVAL; + + return irq; +} + static void vp_vdpa_free_irq(struct vp_vdpa *vp_vdpa) { struct virtio_pci_modern_device *mdev = &vp_vdpa->mdev; @@ -427,6 +438,7 @@ static const struct vdpa_config_ops vp_vdpa_ops = { .get_config = vp_vdpa_get_config, .set_config = vp_vdpa_set_config, .set_config_cb = vp_vdpa_set_config_cb, + .get_vq_irq = vp_vdpa_get_vq_irq, }; static void vp_vdpa_free_irq_vectors(void *data) -- 2.31.1