From patchwork Mon Apr 13 12:29:23 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 6208651 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6BC4E9F2EC for ; Mon, 13 Apr 2015 12:40:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 85E1F2035E for ; Mon, 13 Apr 2015 12:40:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8B6B520340 for ; Mon, 13 Apr 2015 12:40:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Yhdbv-00038d-O7; Mon, 13 Apr 2015 12:37:07 +0000 Received: from mail-wi0-f178.google.com ([209.85.212.178]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YhdY1-0007Ci-7L for linux-arm-kernel@lists.infradead.org; Mon, 13 Apr 2015 12:33:06 +0000 Received: by widdi4 with SMTP id di4so70268808wid.0 for ; Mon, 13 Apr 2015 05:32:45 -0700 (PDT) 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=nOs8ovMgq38LvITDQhUooCSEtBUyBXc7P6l1o2RU+OE=; b=lvqRK8Rgrj3gA393uCjus/RUMxDvNy+3LiL+9ojONgMb08H+qPcxpclwPLWC99yGqp +VcjuRm6jkZHi5AkIUM40CLfVA7FyqAM9IwXp5VILyUSccp/b/nm4ZG59ZAvwxF/ozfX 7MMCmcRDBfsgtXawk00LX994ElRNCjUrvAFGbceD/LZhfPVHuyehfQhe+E7bXi+5oMM/ WuQp1PaeSghcqHgLmJejLpeJT28svlpBxrYBSAmNVMzmK2+aXzttO26xCtGw703z7qU5 caSVxtlECJrqvG7CawIiWiFkJXUEbBY0QMRWNBdxe7Y2kNmquRQrTynO/Q5PG6qcqqom e27g== X-Gm-Message-State: ALoCoQllztMm/FKoAAiKSDFnPbPCqApmFsgVcE72stObPfxwr2oNzierFqEyzbpNc6CUW+UibwcD X-Received: by 10.194.171.136 with SMTP id au8mr27938028wjc.6.1428928365621; Mon, 13 Apr 2015 05:32:45 -0700 (PDT) Received: from gnx2579.gnb.st.com (LCaen-156-56-7-90.w80-11.abo.wanadoo.fr. [80.11.198.90]) by mx.google.com with ESMTPSA id fl14sm2879910wjc.11.2015.04.13.05.32.44 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 13 Apr 2015 05:32:44 -0700 (PDT) From: Eric Auger To: eric.auger@st.com, eric.auger@linaro.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, alex.williamson@redhat.com, pbonzini@redhat.com Subject: [RFC v6 08/16] VFIO: platform: implement vfio_device_external_ops callbacks Date: Mon, 13 Apr 2015 14:29:23 +0200 Message-Id: <1428928171-18884-9-git-send-email-eric.auger@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1428928171-18884-1-git-send-email-eric.auger@linaro.org> References: <1428928171-18884-1-git-send-email-eric.auger@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150413_053305_453794_F43339A3 X-CRM114-Status: GOOD ( 12.10 ) X-Spam-Score: -0.7 (/) Cc: b.reynal@virtualopensystems.com, feng.wu@intel.com, linux-kernel@vger.kernel.org, patches@linaro.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds the implementation for the 3 external callbacks of vfio_device_external_ops struct, namely active, is_active, set_automasked. Also vfio_device_ops and vfio_device_external_ops are set accordingly. Signed-off-by: Eric Auger --- v6: creation --- drivers/vfio/platform/vfio_platform_common.c | 7 ++++ drivers/vfio/platform/vfio_platform_irq.c | 49 +++++++++++++++++++++++++++ drivers/vfio/platform/vfio_platform_private.h | 11 ++++++ 3 files changed, 67 insertions(+) diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index abcff7a..4113d46 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -471,6 +471,12 @@ static int vfio_platform_mmap(void *device_data, struct vm_area_struct *vma) return -EINVAL; } +static struct vfio_device_external_ops vfio_platform_external_ops = { + .mask = vfio_platform_external_mask, + .is_active = vfio_platform_external_is_active, + .set_automasked = vfio_platform_external_set_automasked, +}; + static const struct vfio_device_ops vfio_platform_ops = { .name = "vfio-platform", .open = vfio_platform_open, @@ -479,6 +485,7 @@ static const struct vfio_device_ops vfio_platform_ops = { .read = vfio_platform_read, .write = vfio_platform_write, .mmap = vfio_platform_mmap, + .external_ops = &vfio_platform_external_ops }; int vfio_platform_probe_common(struct vfio_platform_device *vdev, diff --git a/drivers/vfio/platform/vfio_platform_irq.c b/drivers/vfio/platform/vfio_platform_irq.c index 8eb65c1..f6d83ed 100644 --- a/drivers/vfio/platform/vfio_platform_irq.c +++ b/drivers/vfio/platform/vfio_platform_irq.c @@ -231,6 +231,55 @@ static int vfio_set_trigger(struct vfio_platform_device *vdev, int index, return 0; } +int vfio_platform_external_mask(void *device_data, unsigned index, + unsigned start, unsigned count) +{ + struct vfio_platform_device *vdev = device_data; + + vfio_platform_mask(&vdev->irqs[index]); + return 0; +} + +int vfio_platform_external_is_active(void *device_data, unsigned index, + unsigned start, unsigned count) +{ + unsigned long flags; + struct vfio_platform_device *vdev = device_data; + struct vfio_platform_irq *irq = &vdev->irqs[index]; + bool active, masked, outstanding; + int ret; + + spin_lock_irqsave(&irq->lock, flags); + + ret = irq_get_irqchip_state(irq->hwirq, IRQCHIP_STATE_ACTIVE, &active); + BUG_ON(ret); + masked = irq->masked; + outstanding = active || masked; + + spin_unlock_irqrestore(&irq->lock, flags); + return outstanding; +} + +int vfio_platform_external_set_automasked(void *device_data, unsigned index, + unsigned start, unsigned count, + bool automasked) +{ + unsigned long flags; + struct vfio_platform_device *vdev = device_data; + struct vfio_platform_irq *irq = &vdev->irqs[index]; + + spin_lock_irqsave(&irq->lock, flags); + if (automasked) { + irq->flags |= VFIO_IRQ_INFO_AUTOMASKED; + irq->handler = vfio_automasked_irq_handler; + } else { + irq->flags &= ~VFIO_IRQ_INFO_AUTOMASKED; + irq->handler = vfio_irq_handler; + } + spin_unlock_irqrestore(&irq->lock, flags); + return 0; +} + static int vfio_platform_set_irq_trigger(struct vfio_platform_device *vdev, unsigned index, unsigned start, unsigned count, uint32_t flags, diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index eb91deb..253caa3 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -83,4 +83,15 @@ extern int vfio_platform_set_irqs_ioctl(struct vfio_platform_device *vdev, unsigned start, unsigned count, void *data); +extern int vfio_platform_external_mask(void *device_data, unsigned index, + unsigned start, unsigned count); +extern int vfio_platform_external_is_active(void *device_data, + unsigned index, unsigned start, + unsigned count); +extern int vfio_platform_external_set_automasked(void *device_data, + unsigned index, + unsigned start, + unsigned count, + bool automasked); + #endif /* VFIO_PLATFORM_PRIVATE_H */