From patchwork Thu Nov 19 14:53:55 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Auger Eric X-Patchwork-Id: 57006 Delivered-To: patches@linaro.org Received: by 10.112.155.196 with SMTP id vy4csp3227074lbb; Thu, 19 Nov 2015 06:54:23 -0800 (PST) X-Received: by 10.194.9.104 with SMTP id y8mr8819653wja.106.1447944858546; Thu, 19 Nov 2015 06:54:18 -0800 (PST) Return-Path: Received: from mail-wm0-x236.google.com (mail-wm0-x236.google.com. [2a00:1450:400c:c09::236]) by mx.google.com with ESMTPS id a83si40009286wmd.86.2015.11.19.06.54.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 19 Nov 2015 06:54:18 -0800 (PST) Received-SPF: pass (google.com: domain of eric.auger@linaro.org designates 2a00:1450:400c:c09::236 as permitted sender) client-ip=2a00:1450:400c:c09::236; Authentication-Results: mx.google.com; spf=pass (google.com: domain of eric.auger@linaro.org designates 2a00:1450:400c:c09::236 as permitted sender) smtp.mailfrom=eric.auger@linaro.org; dkim=pass header.i=@linaro-org.20150623.gappssmtp.com Received: by wmww144 with SMTP id w144so241828695wmw.1 for ; Thu, 19 Nov 2015 06:54:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=T54fAclPYIb5+MNWudxIB2PmluY5ZR/6b6Fwb+WuNDU=; b=RwXHgBo5xV0ELM5lxKMSrKrHyXhRF2ePrZcbtWMozDMbzseExmuvVmzO7myC5ok57H yPrhQX3KkX7xk7CRpFnuWizeDivhh/gUqJJF2Od7/j+IVUkMSXQ6FM1VqxC39NnW+3AB k6cLE053SqbpwymyFhdJPu2hy30JS3H1uiiY/4IGk8qTok5sFO2KBaYr1Qr1AG0DBXbA K9Rr2LimPOXyzjKS+6ABZOEMnw/De/0afl40QF0in58hH4wlrk6ils6N3oGBm9IVtf0Y zAGFwlgpQohakaPfFMRrTgc0nZkJ6yzM24Ez/h/Aipb7vO0u4sBNuaae9w/aBbA0DOEr cn5g== 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=T54fAclPYIb5+MNWudxIB2PmluY5ZR/6b6Fwb+WuNDU=; b=Z0LKrG6sNojOID/SpGlQbQ7iTqF01Yc+k6a2rF+xJKUowG0PfdqYffq74E+cPQ0LEu +oEXBX7W00LwzIXdO0EdWznzQWGRCfXcQZZu+DQKVzzm5xIcv+sb+gsjZuTASeSlk+Mi guaYaqzTRqHnL7RMWqjXNrVtfz8VtJPyh85sx8mFbpKoWS1ajKhHvCtifaGRH/tKm2K8 KKtnJc4flyqWt/C/m6pDiUBg8RmoPP50zbAiAMHu/IWCF2yZ5pzxHnGfbKUaD7pq+e3w y7rL116rJ1b6IDrYnoy5SLJj1MY87ZQWmZi5MTWKjKpZuhzfbEIrFkGgAM2QBmM5PnT4 hdNg== X-Gm-Message-State: ALoCoQnd3jCMInQry7THBmdf5M88T7G/hQ07D9j2iK+NaIHbuactDf/gE6dNbuKkQZ6+TqFLc8FC X-Received: by 10.194.200.134 with SMTP id js6mr10111882wjc.114.1447944858360; Thu, 19 Nov 2015 06:54:18 -0800 (PST) Return-Path: Received: from new-host-3.home (LMontsouris-657-1-37-90.w80-11.abo.wanadoo.fr. [80.11.198.90]) by smtp.gmail.com with ESMTPSA id h67sm34493865wmf.17.2015.11.19.06.54.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 19 Nov 2015 06:54:17 -0800 (PST) From: Eric Auger To: eric.auger@st.com, eric.auger@linaro.org, alex.williamson@redhat.com, b.reynal@virtualopensystems.com, christoffer.dall@linaro.org, marc.zyngier@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Cc: andre.przywara@arm.com, linux-kernel@vger.kernel.org, patches@linaro.org Subject: [PATCH v4 05/13] VFIO: platform: add vfio_platform_set_forwarded Date: Thu, 19 Nov 2015 14:53:55 +0000 Message-Id: <1447944843-17731-6-git-send-email-eric.auger@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1447944843-17731-1-git-send-email-eric.auger@linaro.org> References: <1447944843-17731-1-git-send-email-eric.auger@linaro.org> This function allows to change the forwarded mode and selects the IRQ handler accordingly. Signed-off-by: Eric Auger --- v3 -> v3: - renamed vfio_platform_set_automasked into vfio_platform_set_forwarded - do not change VFIO_IRQ_INFO_AUTOMASKED setting when turning forwarding on/off v1 -> v2: - set forwarded flag --- drivers/vfio/platform/vfio_platform_irq.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) -- 1.9.1 diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c index c58e0ad..257200b 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -186,6 +186,23 @@ static irqreturn_t vfio_handler(int irq, void *dev_id) return ret; } +static int vfio_platform_set_forwarded(struct vfio_platform_irq *irq, + bool forwarded) +{ + unsigned long flags; + + spin_lock_irqsave(&irq->lock, flags); + irq->forwarded = forwarded; + + if (!forwarded && (irq->flags & VFIO_IRQ_INFO_AUTOMASKED)) + irq->handler = vfio_automasked_irq_handler; + else + irq->handler = vfio_irq_handler; + + spin_unlock_irqrestore(&irq->lock, flags); + return 0; +} + static void vfio_platform_irq_bypass_stop(struct irq_bypass_producer *prod) { }