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path: root/drivers/virtio/virtio_pci.c
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Diffstat (limited to 'drivers/virtio/virtio_pci.c')
-rw-r--r--drivers/virtio/virtio_pci.c43
1 files changed, 27 insertions, 16 deletions
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index c7dc37c..265fdf2 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -75,7 +75,7 @@ MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
* would make more sense for virtio to not insist on having it's own device. */
static struct device virtio_pci_root = {
.parent = NULL,
- .bus_id = "virtio-pci",
+ .init_name = "virtio-pci",
};
/* Convert a generic virtio device to our structure */
@@ -216,7 +216,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
struct virtio_pci_vq_info *info;
struct virtqueue *vq;
- unsigned long flags;
+ unsigned long flags, size;
u16 num;
int err;
@@ -237,19 +237,20 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
info->queue_index = index;
info->num = num;
- info->queue = kzalloc(PAGE_ALIGN(vring_size(num,PAGE_SIZE)), GFP_KERNEL);
+ size = PAGE_ALIGN(vring_size(num, VIRTIO_PCI_VRING_ALIGN));
+ info->queue = alloc_pages_exact(size, GFP_KERNEL|__GFP_ZERO);
if (info->queue == NULL) {
err = -ENOMEM;
goto out_info;
}
/* activate the queue */
- iowrite32(virt_to_phys(info->queue) >> PAGE_SHIFT,
+ iowrite32(virt_to_phys(info->queue) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT,
vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
/* create the vring */
- vq = vring_new_virtqueue(info->num, vdev, info->queue,
- vp_notify, callback);
+ vq = vring_new_virtqueue(info->num, VIRTIO_PCI_VRING_ALIGN,
+ vdev, info->queue, vp_notify, callback);
if (!vq) {
err = -ENOMEM;
goto out_activate_queue;
@@ -266,7 +267,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index,
out_activate_queue:
iowrite32(0, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
- kfree(info->queue);
+ free_pages_exact(info->queue, size);
out_info:
kfree(info);
return ERR_PTR(err);
@@ -277,7 +278,7 @@ static void vp_del_vq(struct virtqueue *vq)
{
struct virtio_pci_device *vp_dev = to_vp_device(vq->vdev);
struct virtio_pci_vq_info *info = vq->priv;
- unsigned long flags;
+ unsigned long flags, size;
spin_lock_irqsave(&vp_dev->lock, flags);
list_del(&info->node);
@@ -289,7 +290,8 @@ static void vp_del_vq(struct virtqueue *vq)
iowrite16(info->queue_index, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_SEL);
iowrite32(0, vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);
- kfree(info->queue);
+ size = PAGE_ALIGN(vring_size(info->num, VIRTIO_PCI_VRING_ALIGN));
+ free_pages_exact(info->queue, size);
kfree(info);
}
@@ -305,6 +307,20 @@ static struct virtio_config_ops virtio_pci_config_ops = {
.finalize_features = vp_finalize_features,
};
+static void virtio_pci_release_dev(struct device *_d)
+{
+ struct virtio_device *dev = container_of(_d, struct virtio_device, dev);
+ struct virtio_pci_device *vp_dev = to_vp_device(dev);
+ struct pci_dev *pci_dev = vp_dev->pci_dev;
+
+ free_irq(pci_dev->irq, vp_dev);
+ pci_set_drvdata(pci_dev, NULL);
+ pci_iounmap(pci_dev, vp_dev->ioaddr);
+ pci_release_regions(pci_dev);
+ pci_disable_device(pci_dev);
+ kfree(vp_dev);
+}
+
/* the PCI probing function */
static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
const struct pci_device_id *id)
@@ -328,6 +344,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
return -ENOMEM;
vp_dev->vdev.dev.parent = &virtio_pci_root;
+ vp_dev->vdev.dev.release = virtio_pci_release_dev;
vp_dev->vdev.config = &virtio_pci_config_ops;
vp_dev->pci_dev = pci_dev;
INIT_LIST_HEAD(&vp_dev->virtqueues);
@@ -357,7 +374,7 @@ static int __devinit virtio_pci_probe(struct pci_dev *pci_dev,
/* register a handler for the queue with the PCI device's interrupt */
err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, IRQF_SHARED,
- vp_dev->vdev.dev.bus_id, vp_dev);
+ dev_name(&vp_dev->vdev.dev), vp_dev);
if (err)
goto out_set_drvdata;
@@ -387,12 +404,6 @@ static void __devexit virtio_pci_remove(struct pci_dev *pci_dev)
struct virtio_pci_device *vp_dev = pci_get_drvdata(pci_dev);
unregister_virtio_device(&vp_dev->vdev);
- free_irq(pci_dev->irq, vp_dev);
- pci_set_drvdata(pci_dev, NULL);
- pci_iounmap(pci_dev, vp_dev->ioaddr);
- pci_release_regions(pci_dev);
- pci_disable_device(pci_dev);
- kfree(vp_dev);
}
#ifdef CONFIG_PM
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