From patchwork Wed Sep 21 10:43:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Tian, Kevin" X-Patchwork-Id: 12983156 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A3D9DC6FA82 for ; Wed, 21 Sep 2022 03:28:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8F6FE10E80E; Wed, 21 Sep 2022 03:28:11 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3417810E586; Wed, 21 Sep 2022 03:28:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663730882; x=1695266882; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MuLOR6tGRzdttt+GlwHEN55tZn+NnVFw8Pxpxnc4FmA=; b=DpkW2NbZquUZMCt9HOuDQx6Ai9FuPXtpKPV0yt0buTVu3k0uveQV+zlG 9q3r9yDH2lmOxaZO6y6nzbHuW5e9PiOE9e6JxYXnAN/eYOgpuPNaT2O5W FxJDe/+q8lswBLVpmr2+72exWoy1aVNRQk0KpJZoS2AIKl43E8k6cQTQz 4xpNlS1DDKjIl/dwgof0Wa98GnoeWEpSMaVlAlmMyjqNUBciQADuSGD95 yqFOuNvWfHLNB8bMhrGmEVGQZBKEiuO2pSuuSfwosyIvKaxb6ik6FPJPe 47q4xHSXnG6SM9cBV2EirdKxuEWnYTGrWBoc0b3ulnCQz/0eL+3qP8MfM g==; X-IronPort-AV: E=McAfee;i="6500,9779,10476"; a="326198394" X-IronPort-AV: E=Sophos;i="5.93,332,1654585200"; d="scan'208";a="326198394" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2022 20:28:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,332,1654585200"; d="scan'208";a="761574471" Received: from sqa-gate.sh.intel.com (HELO michael.clx.dev.tsp.org) ([10.239.48.212]) by fmsmga001.fm.intel.com with ESMTP; 20 Sep 2022 20:27:53 -0700 From: Kevin Tian To: Zhenyu Wang , Zhi Wang , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Daniel Vetter , Eric Farman , Matthew Rosato , Halil Pasic , Vineeth Vijayan , Peter Oberparleiter , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Tony Krowiak , Jason Herne , Harald Freudenberger , Diana Craciun , Alex Williamson , Cornelia Huck , Longfang Liu , Shameer Kolothum , Jason Gunthorpe , Yishai Hadas , Kevin Tian , Eric Auger , Kirti Wankhede , Leon Romanovsky , Abhishek Sahu , Christoph Hellwig , intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org Date: Wed, 21 Sep 2022 18:43:58 +0800 Message-Id: <20220921104401.38898-13-kevin.tian@intel.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20220921104401.38898-1-kevin.tian@intel.com> References: <20220921104401.38898-1-kevin.tian@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 12/15] vfio/amba: Use the new device life cycle helpers X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yi Liu Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Implement amba's own vfio_device_ops. Remove vfio_platform_probe/remove_common() given no user now. Signed-off-by: Kevin Tian Reviewed-by: Jason Gunthorpe Reviewed-by: Eric Auger --- drivers/vfio/platform/vfio_amba.c | 72 ++++++++++++++----- drivers/vfio/platform/vfio_platform_common.c | 60 ---------------- drivers/vfio/platform/vfio_platform_private.h | 3 - 3 files changed, 55 insertions(+), 80 deletions(-) diff --git a/drivers/vfio/platform/vfio_amba.c b/drivers/vfio/platform/vfio_amba.c index 1aaa4f721bd2..eaea63e5294c 100644 --- a/drivers/vfio/platform/vfio_amba.c +++ b/drivers/vfio/platform/vfio_amba.c @@ -7,6 +7,7 @@ #include #include #include +#include #include #include "vfio_platform_private.h" @@ -40,20 +41,16 @@ static int get_amba_irq(struct vfio_platform_device *vdev, int i) return ret ? ret : -ENXIO; } -static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) +static int vfio_amba_init_dev(struct vfio_device *core_vdev) { - struct vfio_platform_device *vdev; + struct vfio_platform_device *vdev = + container_of(core_vdev, struct vfio_platform_device, vdev); + struct amba_device *adev = to_amba_device(core_vdev->dev); int ret; - vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); - if (!vdev) - return -ENOMEM; - vdev->name = kasprintf(GFP_KERNEL, "vfio-amba-%08x", adev->periphid); - if (!vdev->name) { - kfree(vdev); + if (!vdev->name) return -ENOMEM; - } vdev->opaque = (void *) adev; vdev->flags = VFIO_DEVICE_FLAGS_AMBA; @@ -61,26 +58,67 @@ static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) vdev->get_irq = get_amba_irq; vdev->reset_required = false; - ret = vfio_platform_probe_common(vdev, &adev->dev); - if (ret) { + ret = vfio_platform_init_common(vdev); + if (ret) kfree(vdev->name); - kfree(vdev); - return ret; - } + return ret; +} + +static const struct vfio_device_ops vfio_amba_ops; +static int vfio_amba_probe(struct amba_device *adev, const struct amba_id *id) +{ + struct vfio_platform_device *vdev; + int ret; + + vdev = vfio_alloc_device(vfio_platform_device, vdev, &adev->dev, + &vfio_amba_ops); + if (IS_ERR(vdev)) + return PTR_ERR(vdev); + ret = vfio_register_group_dev(&vdev->vdev); + if (ret) + goto out_put_vdev; + + pm_runtime_enable(&adev->dev); dev_set_drvdata(&adev->dev, vdev); return 0; + +out_put_vdev: + vfio_put_device(&vdev->vdev); + return ret; +} + +static void vfio_amba_release_dev(struct vfio_device *core_vdev) +{ + struct vfio_platform_device *vdev = + container_of(core_vdev, struct vfio_platform_device, vdev); + + vfio_platform_release_common(vdev); + kfree(vdev->name); + vfio_free_device(core_vdev); } static void vfio_amba_remove(struct amba_device *adev) { struct vfio_platform_device *vdev = dev_get_drvdata(&adev->dev); - vfio_platform_remove_common(vdev); - kfree(vdev->name); - kfree(vdev); + vfio_unregister_group_dev(&vdev->vdev); + pm_runtime_disable(vdev->device); + vfio_put_device(&vdev->vdev); } +static const struct vfio_device_ops vfio_amba_ops = { + .name = "vfio-amba", + .init = vfio_amba_init_dev, + .release = vfio_amba_release_dev, + .open_device = vfio_platform_open_device, + .close_device = vfio_platform_close_device, + .ioctl = vfio_platform_ioctl, + .read = vfio_platform_read, + .write = vfio_platform_write, + .mmap = vfio_platform_mmap, +}; + static const struct amba_id pl330_ids[] = { { 0, 0 }, }; diff --git a/drivers/vfio/platform/vfio_platform_common.c b/drivers/vfio/platform/vfio_platform_common.c index 4c01bf0adebb..55dc4f43c31e 100644 --- a/drivers/vfio/platform/vfio_platform_common.c +++ b/drivers/vfio/platform/vfio_platform_common.c @@ -605,16 +605,6 @@ int vfio_platform_mmap(struct vfio_device *core_vdev, struct vm_area_struct *vma } EXPORT_SYMBOL_GPL(vfio_platform_mmap); -static const struct vfio_device_ops vfio_platform_ops = { - .name = "vfio-platform", - .open_device = vfio_platform_open_device, - .close_device = vfio_platform_close_device, - .ioctl = vfio_platform_ioctl, - .read = vfio_platform_read, - .write = vfio_platform_write, - .mmap = vfio_platform_mmap, -}; - static int vfio_platform_of_probe(struct vfio_platform_device *vdev, struct device *dev) { @@ -674,56 +664,6 @@ void vfio_platform_release_common(struct vfio_platform_device *vdev) } EXPORT_SYMBOL_GPL(vfio_platform_release_common); -int vfio_platform_probe_common(struct vfio_platform_device *vdev, - struct device *dev) -{ - int ret; - - vfio_init_group_dev(&vdev->vdev, dev, &vfio_platform_ops); - - ret = vfio_platform_acpi_probe(vdev, dev); - if (ret) - ret = vfio_platform_of_probe(vdev, dev); - - if (ret) - goto out_uninit; - - vdev->device = dev; - - ret = vfio_platform_get_reset(vdev); - if (ret && vdev->reset_required) { - dev_err(dev, "No reset function found for device %s\n", - vdev->name); - goto out_uninit; - } - - ret = vfio_register_group_dev(&vdev->vdev); - if (ret) - goto put_reset; - - mutex_init(&vdev->igate); - - pm_runtime_enable(dev); - return 0; - -put_reset: - vfio_platform_put_reset(vdev); -out_uninit: - vfio_uninit_group_dev(&vdev->vdev); - return ret; -} -EXPORT_SYMBOL_GPL(vfio_platform_probe_common); - -void vfio_platform_remove_common(struct vfio_platform_device *vdev) -{ - vfio_unregister_group_dev(&vdev->vdev); - - pm_runtime_disable(vdev->device); - vfio_platform_put_reset(vdev); - vfio_uninit_group_dev(&vdev->vdev); -} -EXPORT_SYMBOL_GPL(vfio_platform_remove_common); - void __vfio_platform_register_reset(struct vfio_platform_reset_node *node) { mutex_lock(&driver_lock); diff --git a/drivers/vfio/platform/vfio_platform_private.h b/drivers/vfio/platform/vfio_platform_private.h index a769d649fb97..8d8fab516849 100644 --- a/drivers/vfio/platform/vfio_platform_private.h +++ b/drivers/vfio/platform/vfio_platform_private.h @@ -78,9 +78,6 @@ struct vfio_platform_reset_node { vfio_platform_reset_fn_t of_reset; }; -int vfio_platform_probe_common(struct vfio_platform_device *vdev, - struct device *dev); -void vfio_platform_remove_common(struct vfio_platform_device *vdev); int vfio_platform_init_common(struct vfio_platform_device *vdev); void vfio_platform_release_common(struct vfio_platform_device *vdev);