/*
* removes a virtio device if a hot remove event has been
* requested by the host.
*/
static int mic_remove_device(struct mic_device_desc __iomem *d,
unsigned int offset, struct mic_driver *mdrv)
{
struct mic_device_ctrl __iomem *dc
= (void __iomem *)d + mic_aligned_desc_size(d);
struct mic_vdev *mvdev = (struct mic_vdev *)ioread64(&dc->vdev);
u8 status;
int ret = -1;
if (ioread8(&dc->config_change) == MIC_VIRTIO_PARAM_DEV_REMOVE) {
dev_dbg(mdrv->dev,
"%s %d config_change %d type %d mvdev %p\n",
__func__, __LINE__,
ioread8(&dc->config_change), ioread8(&d->type), mvdev);
status = ioread8(&d->status);
reinit_completion(&mvdev->reset_done);
unregister_virtio_device(&mvdev->vdev);
mic_free_card_irq(mvdev->virtio_cookie, mvdev);
if (status & VIRTIO_CONFIG_S_DRIVER_OK)
wait_for_completion(&mvdev->reset_done);
kfree(mvdev);
iowrite8(1, &dc->guest_ack);
dev_dbg(mdrv->dev, "%s %d guest_ack %d\n",
__func__, __LINE__, ioread8(&dc->guest_ack));
ret = 0;
}
return ret;
}
/*
* removes a virtio device if a hot remove event has been
* requested by the host.
*/
static int _vop_remove_device(struct mic_device_desc __iomem *d,
unsigned int offset, struct vop_device *vpdev)
{
struct mic_device_ctrl __iomem *dc
= (void __iomem *)d + _vop_aligned_desc_size(d);
struct _vop_vdev *vdev = (struct _vop_vdev *)readq(&dc->vdev);
u8 status;
int ret = -1;
if (ioread8(&dc->config_change) == MIC_VIRTIO_PARAM_DEV_REMOVE) {
dev_dbg(&vpdev->dev,
"%s %d config_change %d type %d vdev %p\n",
__func__, __LINE__,
ioread8(&dc->config_change), ioread8(&d->type), vdev);
status = ioread8(&d->status);
reinit_completion(&vdev->reset_done);
unregister_virtio_device(&vdev->vdev);
vpdev->hw_ops->free_irq(vpdev, vdev->virtio_cookie, vdev);
iowrite8(-1, &dc->h2c_vdev_db);
if (status & VIRTIO_CONFIG_S_DRIVER_OK)
wait_for_completion(&vdev->reset_done);
kfree(vdev);
iowrite8(1, &dc->guest_ack);
dev_dbg(&vpdev->dev, "%s %d guest_ack %d\n",
__func__, __LINE__, ioread8(&dc->guest_ack));
iowrite8(-1, &d->type);
ret = 0;
}
return ret;
}
static int __devexit virtio_mmio_remove(struct platform_device *pdev)
{
struct virtio_mmio_device *vm_dev = platform_get_drvdata(pdev);
unregister_virtio_device(&vm_dev->vdev);
return 0;
}
static int zynq_rpmsg_deinitialize(struct platform_device *pdev)
{
unregister_virtio_device(&(zynq_rpmsg_p->virtio_dev));
put_device(&(zynq_rpmsg_p->mid_dev));
dma_release_declared_memory(&pdev->dev);
clear_ipi_handler(zynq_rpmsg_p->vring0);
return 0;
}
