From patchwork Mon Aug 10 13:20:55 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Auger Eric X-Patchwork-Id: 52235 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-wi0-f200.google.com (mail-wi0-f200.google.com [209.85.212.200]) by patches.linaro.org (Postfix) with ESMTPS id 90B1522A29 for ; Mon, 10 Aug 2015 13:21:55 +0000 (UTC) Received: by wicul11 with SMTP id ul11sf39166882wic.1 for ; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:in-reply-to:references:x-original-sender :x-original-authentication-results:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-unsubscribe; bh=8J06j06IAfZniyuhdecBOX9T/F5NJrzGeMzZVCnVRfo=; b=Te5mg471Ld3ImBhuOdjcTXf3CFJpcqJOaw7aOyNYTa6h+xFz2GKcvkqR/vfJ+6HKwN bV10ImWuCILjlhHUnevnlqYK06/HUjnh6Z9lRY+e3wfKPihY1nt8zCY8qZciJxrg62Iu BLeCYKpwFkzXu39bolh3VYTqFYNrMd5CcJObJSp5keXwEG2P2xI94QJnNU24CLp2IKDt 6LCIZY0Pkw0EPHANwf2j7tiDyTHUgjZnCIgOPSjf5b2AwMk/AWFURVUos6O8OoNv7d1G zs3aDmDM65NzW8jN7RoWm27xXjE1h72J+OTgJdBNz00Si9ocJH/REAmd+B6H4/LbtALQ qo2w== X-Gm-Message-State: ALoCoQk6Tqwj6aqcIzNf7BuRVQvWfrCKqYkXguqXhbnpTAdYDj/TYClmgK5wP4pXlYDeSdCjOfzu X-Received: by 10.112.130.200 with SMTP id og8mr6274464lbb.21.1439212914780; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.152.42.139 with SMTP id o11ls771027lal.80.gmail; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) X-Received: by 10.112.148.130 with SMTP id ts2mr20016427lbb.17.1439212914636; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) Received: from mail-la0-f43.google.com (mail-la0-f43.google.com. [209.85.215.43]) by mx.google.com with ESMTPS id rv3si13980435lbb.151.2015.08.10.06.21.54 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Aug 2015 06:21:54 -0700 (PDT) Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.43 as permitted sender) client-ip=209.85.215.43; Received: by lahi9 with SMTP id i9so23049036lah.2 for ; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) X-Received: by 10.153.7.66 with SMTP id da2mr19770770lad.117.1439212914449; Mon, 10 Aug 2015 06:21:54 -0700 (PDT) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patches@linaro.org Received: by 10.112.7.198 with SMTP id l6csp1931671lba; Mon, 10 Aug 2015 06:21:53 -0700 (PDT) X-Received: by 10.194.62.140 with SMTP id y12mr9266013wjr.34.1439212913622; Mon, 10 Aug 2015 06:21:53 -0700 (PDT) Received: from mail-wi0-f173.google.com (mail-wi0-f173.google.com. [209.85.212.173]) by mx.google.com with ESMTPS id c9si32301376wje.58.2015.08.10.06.21.53 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Aug 2015 06:21:53 -0700 (PDT) Received-SPF: pass (google.com: domain of eric.auger@linaro.org designates 209.85.212.173 as permitted sender) client-ip=209.85.212.173; Received: by wicne3 with SMTP id ne3so135765620wic.1 for ; Mon, 10 Aug 2015 06:21:53 -0700 (PDT) X-Received: by 10.194.238.193 with SMTP id vm1mr43580279wjc.57.1439212913325; Mon, 10 Aug 2015 06:21:53 -0700 (PDT) Received: from gnx2579.home (LCaen-156-56-7-90.w80-11.abo.wanadoo.fr. [80.11.198.90]) by smtp.gmail.com with ESMTPSA id fq15sm29517024wjc.12.2015.08.10.06.21.51 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Aug 2015 06:21:52 -0700 (PDT) From: Eric Auger To: eric.auger@st.com, eric.auger@linaro.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, alex.williamson@redhat.com, feng.wu@intel.com Cc: linux-kernel@vger.kernel.org, patches@linaro.org, pbonzini@redhat.com Subject: [PATCH v3 01/10] VFIO: platform: registration of a dummy IRQ bypass producer Date: Mon, 10 Aug 2015 15:20:55 +0200 Message-Id: <1439212864-12954-2-git-send-email-eric.auger@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1439212864-12954-1-git-send-email-eric.auger@linaro.org> References: <1439212864-12954-1-git-send-email-eric.auger@linaro.org> X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: eric.auger@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.215.43 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Precedence: list Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org List-ID: X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Register a dummy producer with void callbacks Signed-off-by: Eric Auger --- v2 -> v3: - rename vfio_platform_irq_bypass_resume into *_start --- drivers/vfio/platform/vfio_platform_irq.c | 32 +++++++++++++++++++++++++++ drivers/vfio/platform/vfio_platform_private.h | 2 ++ 2 files changed, 34 insertions(+) diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c index 88bba57..b5cb8c7 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "vfio_platform_private.h" @@ -177,6 +178,27 @@ static irqreturn_t vfio_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } +static void vfio_platform_irq_bypass_stop(struct irq_bypass_producer *prod) +{ +} + +static void vfio_platform_irq_bypass_start(struct irq_bypass_producer *prod) +{ +} + +static int vfio_platform_irq_bypass_add_consumer( + struct irq_bypass_producer *prod, + struct irq_bypass_consumer *cons) +{ + return 0; +} + +static void vfio_platform_irq_bypass_del_consumer( + struct irq_bypass_producer *prod, + struct irq_bypass_consumer *cons) +{ +} + static int vfio_set_trigger(struct vfio_platform_device *vdev, int index, int fd, irq_handler_t handler) { @@ -186,6 +208,7 @@ static int vfio_set_trigger(struct vfio_platform_device *vdev, int index, if (irq->trigger) { free_irq(irq->hwirq, irq); + irq_bypass_unregister_producer(&irq->producer); kfree(irq->name); eventfd_ctx_put(irq->trigger); irq->trigger = NULL; @@ -216,6 +239,15 @@ static int vfio_set_trigger(struct vfio_platform_device *vdev, int index, return ret; } + irq->producer.token = (void *)trigger; + irq->producer.irq = irq->hwirq; + irq->producer.add_consumer = vfio_platform_irq_bypass_add_consumer; + irq->producer.del_consumer = vfio_platform_irq_bypass_del_consumer; + irq->producer.stop = vfio_platform_irq_bypass_stop; + irq->producer.start = vfio_platform_irq_bypass_start; + ret = irq_bypass_register_producer(&irq->producer); + WARN_ON(ret); + if (!irq->masked) enable_irq(irq->hwirq); diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index 1c9b3d5..1d2d4d6 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -17,6 +17,7 @@ #include #include +#include #define VFIO_PLATFORM_OFFSET_SHIFT 40 #define VFIO_PLATFORM_OFFSET_MASK (((u64)(1) << VFIO_PLATFORM_OFFSET_SHIFT) - 1) @@ -37,6 +38,7 @@ struct vfio_platform_irq { spinlock_t lock; struct virqfd *unmask; struct virqfd *mask; + struct irq_bypass_producer producer; }; struct vfio_platform_region {