From patchwork Fri Oct 11 08:15:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 11184989 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C4A45139A for ; Fri, 11 Oct 2019 08:19:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96B0B21D71 for ; Fri, 11 Oct 2019 08:19:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727199AbfJKITL (ORCPT ); Fri, 11 Oct 2019 04:19:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45442 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726843AbfJKITL (ORCPT ); Fri, 11 Oct 2019 04:19:11 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1642F3090FD1; Fri, 11 Oct 2019 08:19:10 +0000 (UTC) Received: from jason-ThinkPad-X1-Carbon-6th.redhat.com (ovpn-12-241.pek2.redhat.com [10.72.12.241]) by smtp.corp.redhat.com (Postfix) with ESMTP id 071B710018F8; Fri, 11 Oct 2019 08:18:36 +0000 (UTC) From: Jason Wang To: kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, kwankhede@nvidia.com, alex.williamson@redhat.com, mst@redhat.com, tiwei.bie@intel.com Cc: virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, cohuck@redhat.com, maxime.coquelin@redhat.com, cunming.liang@intel.com, zhihong.wang@intel.com, rob.miller@broadcom.com, xiao.w.wang@intel.com, haotian.wang@sifive.com, zhenyuw@linux.intel.com, zhi.a.wang@intel.com, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, daniel@ffwll.ch, farman@linux.ibm.com, pasic@linux.ibm.com, sebott@linux.ibm.com, oberpar@linux.ibm.com, heiko.carstens@de.ibm.com, gor@linux.ibm.com, borntraeger@de.ibm.com, akrowiak@linux.ibm.com, freude@linux.ibm.com, lingshan.zhu@intel.com, idos@mellanox.com, eperezma@redhat.com, lulu@redhat.com, parav@mellanox.com, christophe.de.dinechin@gmail.com, kevin.tian@intel.com, Jason Wang Subject: [PATCH V3 4/7] mdev: introduce device specific ops Date: Fri, 11 Oct 2019 16:15:54 +0800 Message-Id: <20191011081557.28302-5-jasowang@redhat.com> In-Reply-To: <20191011081557.28302-1-jasowang@redhat.com> References: <20191011081557.28302-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.43]); Fri, 11 Oct 2019 08:19:10 +0000 (UTC) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Currently, except for the create and remove, the rest of mdev_parent_ops is designed for vfio-mdev driver only and may not help for kernel mdev driver. With the help of class id, this patch introduces device specific callbacks inside mdev_device structure. This allows different set of callback to be used by vfio-mdev and virtio-mdev. Signed-off-by: Jason Wang --- .../driver-api/vfio-mediated-device.rst | 22 +++++--- MAINTAINERS | 1 + drivers/gpu/drm/i915/gvt/kvmgt.c | 18 ++++--- drivers/s390/cio/vfio_ccw_ops.c | 18 ++++--- drivers/s390/crypto/vfio_ap_ops.c | 14 +++-- drivers/vfio/mdev/mdev_core.c | 9 +++- drivers/vfio/mdev/mdev_private.h | 1 + drivers/vfio/mdev/vfio_mdev.c | 37 ++++++------- include/linux/mdev.h | 42 +++------------ include/linux/vfio_mdev.h | 52 +++++++++++++++++++ samples/vfio-mdev/mbochs.c | 20 ++++--- samples/vfio-mdev/mdpy.c | 21 +++++--- samples/vfio-mdev/mtty.c | 18 ++++--- 13 files changed, 177 insertions(+), 96 deletions(-) create mode 100644 include/linux/vfio_mdev.h diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst index 2035e48da7b2..553574ebba73 100644 --- a/Documentation/driver-api/vfio-mediated-device.rst +++ b/Documentation/driver-api/vfio-mediated-device.rst @@ -152,11 +152,20 @@ callbacks per mdev parent device, per mdev type, or any other categorization. Vendor drivers are expected to be fully asynchronous in this respect or provide their own internal resource protection.) -The callbacks in the mdev_parent_ops structure are as follows: +In order to support multiple types of device/driver, device needs to +provide both class_id and device_ops through: -* open: open callback of mediated device -* close: close callback of mediated device -* ioctl: ioctl callback of mediated device + void mdev_set_class(struct mdev_device *mdev, u16 id, const void *ops); + +The class_id is used to be paired with ids in id_table in mdev_driver +structure for probing the correct driver. The device_ops is device +specific callbacks which can be get through mdev_get_dev_ops() +function by mdev bus driver. For vfio-mdev device, its device specific +ops are as follows: + +* open: open callback of vfio mediated device +* close: close callback of vfio mediated device +* ioctl: ioctl callback of vfio mediated device * read : read emulation callback * write: write emulation callback * mmap: mmap emulation callback @@ -167,9 +176,10 @@ register itself with the mdev core driver:: extern int mdev_register_device(struct device *dev, const struct mdev_parent_ops *ops); -It is also required to specify the class_id through:: +It is also required to specify the class_id and device specific ops through:: - extern int mdev_set_class(struct device *dev, u16 id); + extern int mdev_set_class(struct device *dev, u16 id, + const void *ops); However, the mdev_parent_ops structure is not required in the function call that a driver should use to unregister itself with the mdev core driver:: diff --git a/MAINTAINERS b/MAINTAINERS index 8824f61cd2c0..3d196a023b5e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -17127,6 +17127,7 @@ S: Maintained F: Documentation/driver-api/vfio-mediated-device.rst F: drivers/vfio/mdev/ F: include/linux/mdev.h +F: include/linux/vfio_mdev.h F: samples/vfio-mdev/ VFIO PLATFORM DRIVER diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 17e9d4634c84..7e2b720074fd 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -42,6 +42,7 @@ #include #include #include +#include #include #include @@ -643,6 +644,8 @@ static void kvmgt_put_vfio_device(void *vgpu) vfio_device_put(((struct intel_vgpu *)vgpu)->vdev.vfio_device); } +static const struct vfio_mdev_device_ops intel_vfio_vgpu_dev_ops; + static int intel_vgpu_create(struct kobject *kobj, struct mdev_device *mdev) { struct intel_vgpu *vgpu = NULL; @@ -678,7 +681,7 @@ static int intel_vgpu_create(struct kobject *kobj, struct mdev_device *mdev) dev_name(mdev_dev(mdev))); ret = 0; - mdev_set_class(mdev, MDEV_ID_VFIO); + mdev_set_class(mdev, MDEV_ID_VFIO, &intel_vfio_vgpu_dev_ops); out: return ret; } @@ -1599,20 +1602,21 @@ static const struct attribute_group *intel_vgpu_groups[] = { NULL, }; -static struct mdev_parent_ops intel_vgpu_ops = { - .mdev_attr_groups = intel_vgpu_groups, - .create = intel_vgpu_create, - .remove = intel_vgpu_remove, - +static const struct vfio_mdev_device_ops intel_vfio_vgpu_dev_ops = { .open = intel_vgpu_open, .release = intel_vgpu_release, - .read = intel_vgpu_read, .write = intel_vgpu_write, .mmap = intel_vgpu_mmap, .ioctl = intel_vgpu_ioctl, }; +static struct mdev_parent_ops intel_vgpu_ops = { + .mdev_attr_groups = intel_vgpu_groups, + .create = intel_vgpu_create, + .remove = intel_vgpu_remove, +}; + static int kvmgt_host_init(struct device *dev, void *gvt, const void *ops) { struct attribute **kvm_type_attrs; diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c index b5d223882c6c..322991f0feb0 100644 --- a/drivers/s390/cio/vfio_ccw_ops.c +++ b/drivers/s390/cio/vfio_ccw_ops.c @@ -12,6 +12,7 @@ #include #include +#include #include #include @@ -110,6 +111,8 @@ static struct attribute_group *mdev_type_groups[] = { NULL, }; +static const struct vfio_mdev_device_ops vfio_mdev_ops; + static int vfio_ccw_mdev_create(struct kobject *kobj, struct mdev_device *mdev) { struct vfio_ccw_private *private = @@ -129,7 +132,7 @@ static int vfio_ccw_mdev_create(struct kobject *kobj, struct mdev_device *mdev) private->sch->schid.ssid, private->sch->schid.sch_no); - mdev_set_class(mdev, MDEV_ID_VFIO); + mdev_set_class(mdev, MDEV_ID_VFIO, &vfio_mdev_ops); return 0; } @@ -575,11 +578,7 @@ static ssize_t vfio_ccw_mdev_ioctl(struct mdev_device *mdev, } } -static const struct mdev_parent_ops vfio_ccw_mdev_ops = { - .owner = THIS_MODULE, - .supported_type_groups = mdev_type_groups, - .create = vfio_ccw_mdev_create, - .remove = vfio_ccw_mdev_remove, +static const struct vfio_mdev_device_ops vfio_mdev_ops = { .open = vfio_ccw_mdev_open, .release = vfio_ccw_mdev_release, .read = vfio_ccw_mdev_read, @@ -587,6 +586,13 @@ static const struct mdev_parent_ops vfio_ccw_mdev_ops = { .ioctl = vfio_ccw_mdev_ioctl, }; +static const struct mdev_parent_ops vfio_ccw_mdev_ops = { + .owner = THIS_MODULE, + .supported_type_groups = mdev_type_groups, + .create = vfio_ccw_mdev_create, + .remove = vfio_ccw_mdev_remove, +}; + int vfio_ccw_mdev_reg(struct subchannel *sch) { return mdev_register_device(&sch->dev, &vfio_ccw_mdev_ops); diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index 47df1c593c35..e9bd5f3b1cc2 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -321,6 +322,8 @@ static void vfio_ap_matrix_init(struct ap_config_info *info, matrix->adm_max = info->apxa ? info->Nd : 15; } +static const struct vfio_mdev_device_ops vfio_mdev_ops; + static int vfio_ap_mdev_create(struct kobject *kobj, struct mdev_device *mdev) { struct ap_matrix_mdev *matrix_mdev; @@ -343,7 +346,7 @@ static int vfio_ap_mdev_create(struct kobject *kobj, struct mdev_device *mdev) list_add(&matrix_mdev->node, &matrix_dev->mdev_list); mutex_unlock(&matrix_dev->lock); - mdev_set_class(mdev, MDEV_ID_VFIO); + mdev_set_class(mdev, MDEV_ID_VFIO, &vfio_mdev_ops); return 0; } @@ -1281,15 +1284,18 @@ static ssize_t vfio_ap_mdev_ioctl(struct mdev_device *mdev, return ret; } +static const struct vfio_mdev_device_ops vfio_mdev_ops = { + .open = vfio_ap_mdev_open, + .release = vfio_ap_mdev_release, + .ioctl = vfio_ap_mdev_ioctl, +}; + static const struct mdev_parent_ops vfio_ap_matrix_ops = { .owner = THIS_MODULE, .supported_type_groups = vfio_ap_mdev_type_groups, .mdev_attr_groups = vfio_ap_mdev_attr_groups, .create = vfio_ap_mdev_create, .remove = vfio_ap_mdev_remove, - .open = vfio_ap_mdev_open, - .release = vfio_ap_mdev_release, - .ioctl = vfio_ap_mdev_ioctl, }; int vfio_ap_mdev_register(void) diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c index 724e9b9841d8..c79d0e16522b 100644 --- a/drivers/vfio/mdev/mdev_core.c +++ b/drivers/vfio/mdev/mdev_core.c @@ -45,12 +45,19 @@ void mdev_set_drvdata(struct mdev_device *mdev, void *data) } EXPORT_SYMBOL(mdev_set_drvdata); -void mdev_set_class(struct mdev_device *mdev, u16 id) +void mdev_set_class(struct mdev_device *mdev, u16 id, const void *ops) { mdev->class_id = id; + mdev->device_ops = ops; } EXPORT_SYMBOL(mdev_set_class); +const void *mdev_get_dev_ops(struct mdev_device *mdev) +{ + return mdev->device_ops; +} +EXPORT_SYMBOL(mdev_get_dev_ops); + struct device *mdev_dev(struct mdev_device *mdev) { return &mdev->dev; diff --git a/drivers/vfio/mdev/mdev_private.h b/drivers/vfio/mdev/mdev_private.h index c65f436c1869..b666805f0b1f 100644 --- a/drivers/vfio/mdev/mdev_private.h +++ b/drivers/vfio/mdev/mdev_private.h @@ -34,6 +34,7 @@ struct mdev_device { struct device *iommu_device; bool active; u16 class_id; + const void *device_ops; }; #define to_mdev_device(dev) container_of(dev, struct mdev_device, dev) diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c index 891cf83a2d9a..95efa054442f 100644 --- a/drivers/vfio/mdev/vfio_mdev.c +++ b/drivers/vfio/mdev/vfio_mdev.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "mdev_private.h" @@ -24,16 +25,16 @@ static int vfio_mdev_open(void *device_data) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); int ret; - if (unlikely(!parent->ops->open)) + if (unlikely(!ops->open)) return -EINVAL; if (!try_module_get(THIS_MODULE)) return -ENODEV; - ret = parent->ops->open(mdev); + ret = ops->open(mdev); if (ret) module_put(THIS_MODULE); @@ -43,10 +44,10 @@ static int vfio_mdev_open(void *device_data) static void vfio_mdev_release(void *device_data) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); - if (likely(parent->ops->release)) - parent->ops->release(mdev); + if (likely(ops->release)) + ops->release(mdev); module_put(THIS_MODULE); } @@ -55,47 +56,47 @@ static long vfio_mdev_unlocked_ioctl(void *device_data, unsigned int cmd, unsigned long arg) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); - if (unlikely(!parent->ops->ioctl)) + if (unlikely(!ops->ioctl)) return -EINVAL; - return parent->ops->ioctl(mdev, cmd, arg); + return ops->ioctl(mdev, cmd, arg); } static ssize_t vfio_mdev_read(void *device_data, char __user *buf, size_t count, loff_t *ppos) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); - if (unlikely(!parent->ops->read)) + if (unlikely(!ops->read)) return -EINVAL; - return parent->ops->read(mdev, buf, count, ppos); + return ops->read(mdev, buf, count, ppos); } static ssize_t vfio_mdev_write(void *device_data, const char __user *buf, size_t count, loff_t *ppos) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); - if (unlikely(!parent->ops->write)) + if (unlikely(!ops->write)) return -EINVAL; - return parent->ops->write(mdev, buf, count, ppos); + return ops->write(mdev, buf, count, ppos); } static int vfio_mdev_mmap(void *device_data, struct vm_area_struct *vma) { struct mdev_device *mdev = device_data; - struct mdev_parent *parent = mdev->parent; + const struct vfio_mdev_device_ops *ops = mdev_get_dev_ops(mdev); - if (unlikely(!parent->ops->mmap)) + if (unlikely(!ops->mmap)) return -EINVAL; - return parent->ops->mmap(mdev, vma); + return ops->mmap(mdev, vma); } static const struct vfio_device_ops vfio_mdev_dev_ops = { diff --git a/include/linux/mdev.h b/include/linux/mdev.h index a7570cf13ba4..f491308674e5 100644 --- a/include/linux/mdev.h +++ b/include/linux/mdev.h @@ -10,6 +10,11 @@ #ifndef MDEV_H #define MDEV_H +#include +#include +#include +#include + struct mdev_device; /* @@ -48,30 +53,7 @@ struct device *mdev_get_iommu_device(struct device *dev); * @mdev: mdev_device device structure which is being * destroyed * Returns integer: success (0) or error (< 0) - * @open: Open mediated device. - * @mdev: mediated device. - * Returns integer: success (0) or error (< 0) - * @release: release mediated device - * @mdev: mediated device. - * @read: Read emulation callback - * @mdev: mediated device structure - * @buf: read buffer - * @count: number of bytes to read - * @ppos: address. - * Retuns number on bytes read on success or error. - * @write: Write emulation callback - * @mdev: mediated device structure - * @buf: write buffer - * @count: number of bytes to be written - * @ppos: address. - * Retuns number on bytes written on success or error. - * @ioctl: IOCTL callback - * @mdev: mediated device structure - * @cmd: ioctl command - * @arg: arguments to ioctl - * @mmap: mmap callback - * @mdev: mediated device structure - * @vma: vma structure + * * Parent device that support mediated device should be registered with mdev * module with mdev_parent_ops structure. **/ @@ -83,15 +65,6 @@ struct mdev_parent_ops { int (*create)(struct kobject *kobj, struct mdev_device *mdev); int (*remove)(struct mdev_device *mdev); - int (*open)(struct mdev_device *mdev); - void (*release)(struct mdev_device *mdev); - ssize_t (*read)(struct mdev_device *mdev, char __user *buf, - size_t count, loff_t *ppos); - ssize_t (*write)(struct mdev_device *mdev, const char __user *buf, - size_t count, loff_t *ppos); - long (*ioctl)(struct mdev_device *mdev, unsigned int cmd, - unsigned long arg); - int (*mmap)(struct mdev_device *mdev, struct vm_area_struct *vma); }; /* interface for exporting mdev supported type attributes */ @@ -133,7 +106,8 @@ struct mdev_driver { void *mdev_get_drvdata(struct mdev_device *mdev); void mdev_set_drvdata(struct mdev_device *mdev, void *data); -void mdev_set_class(struct mdev_device *mdev, u16 id); +void mdev_set_class(struct mdev_device *mdev, u16 id, const void *ops); +const void *mdev_get_dev_ops(struct mdev_device *mdev); const guid_t *mdev_uuid(struct mdev_device *mdev); extern struct bus_type mdev_bus_type; diff --git a/include/linux/vfio_mdev.h b/include/linux/vfio_mdev.h new file mode 100644 index 000000000000..3907c5371c2b --- /dev/null +++ b/include/linux/vfio_mdev.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * VFIO Mediated device definition + */ + +#ifndef VFIO_MDEV_H +#define VFIO_MDEV_H + +#include + +/** + * struct vfio_mdev_device_ops - Structure to be registered for each + * mdev device to register the device to vfio-mdev module. + * + * @open: Open mediated device. + * @mdev: mediated device. + * Returns integer: success (0) or error (< 0) + * @release: release mediated device + * @mdev: mediated device. + * @read: Read emulation callback + * @mdev: mediated device structure + * @buf: read buffer + * @count: number of bytes to read + * @ppos: address. + * Retuns number on bytes read on success or error. + * @write: Write emulation callback + * @mdev: mediated device structure + * @buf: write buffer + * @count: number of bytes to be written + * @ppos: address. + * Retuns number on bytes written on success or error. + * @ioctl: IOCTL callback + * @mdev: mediated device structure + * @cmd: ioctl command + * @arg: arguments to ioctl + * @mmap: mmap callback + * @mdev: mediated device structure + * @vma: vma structure + */ +struct vfio_mdev_device_ops { + int (*open)(struct mdev_device *mdev); + void (*release)(struct mdev_device *mdev); + ssize_t (*read)(struct mdev_device *mdev, char __user *buf, + size_t count, loff_t *ppos); + ssize_t (*write)(struct mdev_device *mdev, const char __user *buf, + size_t count, loff_t *ppos); + long (*ioctl)(struct mdev_device *mdev, unsigned int cmd, + unsigned long arg); + int (*mmap)(struct mdev_device *mdev, struct vm_area_struct *vma); +}; + +#endif diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index fd8491e58fe2..9db771ed5e4b 100644 --- a/samples/vfio-mdev/mbochs.c +++ b/samples/vfio-mdev/mbochs.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -516,6 +517,8 @@ static int mbochs_reset(struct mdev_device *mdev) return 0; } +static const struct vfio_mdev_device_ops vfio_mdev_ops; + static int mbochs_create(struct kobject *kobj, struct mdev_device *mdev) { const struct mbochs_type *type = mbochs_find_type(kobj); @@ -561,7 +564,7 @@ static int mbochs_create(struct kobject *kobj, struct mdev_device *mdev) mbochs_reset(mdev); mbochs_used_mbytes += type->mbytes; - mdev_set_class(mdev, MDEV_ID_VFIO); + mdev_set_class(mdev, MDEV_ID_VFIO, &vfio_mdev_ops); return 0; err_mem: @@ -1419,12 +1422,7 @@ static struct attribute_group *mdev_type_groups[] = { NULL, }; -static const struct mdev_parent_ops mdev_fops = { - .owner = THIS_MODULE, - .mdev_attr_groups = mdev_dev_groups, - .supported_type_groups = mdev_type_groups, - .create = mbochs_create, - .remove = mbochs_remove, +static const struct vfio_mdev_device_ops vfio_mdev_ops = { .open = mbochs_open, .release = mbochs_close, .read = mbochs_read, @@ -1433,6 +1431,14 @@ static const struct mdev_parent_ops mdev_fops = { .mmap = mbochs_mmap, }; +static const struct mdev_parent_ops mdev_fops = { + .owner = THIS_MODULE, + .mdev_attr_groups = mdev_dev_groups, + .supported_type_groups = mdev_type_groups, + .create = mbochs_create, + .remove = mbochs_remove, +}; + static const struct file_operations vd_fops = { .owner = THIS_MODULE, }; diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c index 889472b06708..f0fdbc6ec706 100644 --- a/samples/vfio-mdev/mdpy.c +++ b/samples/vfio-mdev/mdpy.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include "mdpy-defs.h" @@ -226,6 +227,8 @@ static int mdpy_reset(struct mdev_device *mdev) return 0; } +static const struct vfio_mdev_device_ops vfio_mdev_ops; + static int mdpy_create(struct kobject *kobj, struct mdev_device *mdev) { const struct mdpy_type *type = mdpy_find_type(kobj); @@ -269,7 +272,8 @@ static int mdpy_create(struct kobject *kobj, struct mdev_device *mdev) mdpy_reset(mdev); mdpy_count++; - mdev_set_class(mdev, MDEV_ID_VFIO); + + mdev_set_class(mdev, MDEV_ID_VFIO, &vfio_mdev_ops); return 0; } @@ -726,12 +730,7 @@ static struct attribute_group *mdev_type_groups[] = { NULL, }; -static const struct mdev_parent_ops mdev_fops = { - .owner = THIS_MODULE, - .mdev_attr_groups = mdev_dev_groups, - .supported_type_groups = mdev_type_groups, - .create = mdpy_create, - .remove = mdpy_remove, +static const struct vfio_mdev_device_ops vfio_mdev_ops = { .open = mdpy_open, .release = mdpy_close, .read = mdpy_read, @@ -740,6 +739,14 @@ static const struct mdev_parent_ops mdev_fops = { .mmap = mdpy_mmap, }; +static const struct mdev_parent_ops mdev_fops = { + .owner = THIS_MODULE, + .mdev_attr_groups = mdev_dev_groups, + .supported_type_groups = mdev_type_groups, + .create = mdpy_create, + .remove = mdpy_remove, +}; + static const struct file_operations vd_fops = { .owner = THIS_MODULE, }; diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c index 618810ca4331..18d0f83a228a 100644 --- a/samples/vfio-mdev/mtty.c +++ b/samples/vfio-mdev/mtty.c @@ -27,6 +27,7 @@ #include #include #include +#include #include #include #include @@ -708,6 +709,8 @@ static ssize_t mdev_access(struct mdev_device *mdev, u8 *buf, size_t count, return ret; } +static const struct vfio_mdev_device_ops vfio_dev_ops; + static int mtty_create(struct kobject *kobj, struct mdev_device *mdev) { struct mdev_state *mdev_state; @@ -755,7 +758,7 @@ static int mtty_create(struct kobject *kobj, struct mdev_device *mdev) list_add(&mdev_state->next, &mdev_devices_list); mutex_unlock(&mdev_list_lock); - mdev_set_class(mdev, MDEV_ID_VFIO); + mdev_set_class(mdev, MDEV_ID_VFIO, &vfio_dev_ops); return 0; } @@ -1388,6 +1391,14 @@ static struct attribute_group *mdev_type_groups[] = { NULL, }; +static const struct vfio_mdev_device_ops vfio_dev_ops = { + .open = mtty_open, + .release = mtty_close, + .read = mtty_read, + .write = mtty_write, + .ioctl = mtty_ioctl, +}; + static const struct mdev_parent_ops mdev_fops = { .owner = THIS_MODULE, .dev_attr_groups = mtty_dev_groups, @@ -1395,11 +1406,6 @@ static const struct mdev_parent_ops mdev_fops = { .supported_type_groups = mdev_type_groups, .create = mtty_create, .remove = mtty_remove, - .open = mtty_open, - .release = mtty_close, - .read = mtty_read, - .write = mtty_write, - .ioctl = mtty_ioctl, }; static void mtty_device_release(struct device *dev)