VFIO: platform: add reset callback
A new reset callback is introduced. If this callback is populated, the reset is invoked on device first open/last close or upon userspace ioctl. The modality is exposed on VFIO_DEVICE_GET_INFO. Signed-off-by: Eric Auger <eric.auger@linaro.org> Acked-by: Baptiste Reynal <b.reynal@virtualopensystems.com> Tested-by: Baptiste Reynal <b.reynal@virtualopensystems.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Родитель
9f85d8f9fa
Коммит
813ae66008
|
@ -103,6 +103,8 @@ static void vfio_platform_release(void *device_data)
|
|||
mutex_lock(&driver_lock);
|
||||
|
||||
if (!(--vdev->refcnt)) {
|
||||
if (vdev->reset)
|
||||
vdev->reset(vdev);
|
||||
vfio_platform_regions_cleanup(vdev);
|
||||
vfio_platform_irq_cleanup(vdev);
|
||||
}
|
||||
|
@ -130,6 +132,9 @@ static int vfio_platform_open(void *device_data)
|
|||
ret = vfio_platform_irq_init(vdev);
|
||||
if (ret)
|
||||
goto err_irq;
|
||||
|
||||
if (vdev->reset)
|
||||
vdev->reset(vdev);
|
||||
}
|
||||
|
||||
vdev->refcnt++;
|
||||
|
@ -162,6 +167,8 @@ static long vfio_platform_ioctl(void *device_data,
|
|||
if (info.argsz < minsz)
|
||||
return -EINVAL;
|
||||
|
||||
if (vdev->reset)
|
||||
vdev->flags |= VFIO_DEVICE_FLAGS_RESET;
|
||||
info.flags = vdev->flags;
|
||||
info.num_regions = vdev->num_regions;
|
||||
info.num_irqs = vdev->num_irqs;
|
||||
|
@ -255,8 +262,12 @@ static long vfio_platform_ioctl(void *device_data,
|
|||
|
||||
return ret;
|
||||
|
||||
} else if (cmd == VFIO_DEVICE_RESET)
|
||||
return -EINVAL;
|
||||
} else if (cmd == VFIO_DEVICE_RESET) {
|
||||
if (vdev->reset)
|
||||
return vdev->reset(vdev);
|
||||
else
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
|
|
@ -67,6 +67,7 @@ struct vfio_platform_device {
|
|||
struct resource*
|
||||
(*get_resource)(struct vfio_platform_device *vdev, int i);
|
||||
int (*get_irq)(struct vfio_platform_device *vdev, int i);
|
||||
int (*reset)(struct vfio_platform_device *vdev);
|
||||
};
|
||||
|
||||
struct vfio_platform_reset_combo {
|
||||
|
|
Загрузка…
Ссылка в новой задаче