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-rw-r--r--drivers/virtio/virtio.c28
-rw-r--r--drivers/virtio/virtio_pci_common.c43
-rw-r--r--drivers/virtio/virtio_pci_common.h4
-rw-r--r--drivers/virtio/virtio_pci_modern.c63
-rw-r--r--include/linux/virtio_config.h4
5 files changed, 46 insertions, 96 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c
index 396d3cd49a1b..835cfbcb59c8 100644
--- a/drivers/virtio/virtio.c
+++ b/drivers/virtio/virtio.c
@@ -305,15 +305,9 @@ static int virtio_dev_probe(struct device *_d)
if (err)
goto err;
- if (dev->config->create_avq) {
- err = dev->config->create_avq(dev);
- if (err)
- goto err;
- }
-
err = drv->probe(dev);
if (err)
- goto err_probe;
+ goto err;
/* If probe didn't do it, mark device DRIVER_OK ourselves. */
if (!(dev->config->get_status(dev) & VIRTIO_CONFIG_S_DRIVER_OK))
@@ -326,9 +320,6 @@ static int virtio_dev_probe(struct device *_d)
return 0;
-err_probe:
- if (dev->config->destroy_avq)
- dev->config->destroy_avq(dev);
err:
virtio_add_status(dev, VIRTIO_CONFIG_S_FAILED);
return err;
@@ -344,9 +335,6 @@ static void virtio_dev_remove(struct device *_d)
drv->remove(dev);
- if (dev->config->destroy_avq)
- dev->config->destroy_avq(dev);
-
/* Driver should have reset device. */
WARN_ON_ONCE(dev->config->get_status(dev));
@@ -524,9 +512,6 @@ int virtio_device_freeze(struct virtio_device *dev)
}
}
- if (dev->config->destroy_avq)
- dev->config->destroy_avq(dev);
-
return 0;
}
EXPORT_SYMBOL_GPL(virtio_device_freeze);
@@ -562,16 +547,10 @@ int virtio_device_restore(struct virtio_device *dev)
if (ret)
goto err;
- if (dev->config->create_avq) {
- ret = dev->config->create_avq(dev);
- if (ret)
- goto err;
- }
-
if (drv->restore) {
ret = drv->restore(dev);
if (ret)
- goto err_restore;
+ goto err;
}
/* If restore didn't do it, mark device DRIVER_OK ourselves. */
@@ -582,9 +561,6 @@ int virtio_device_restore(struct virtio_device *dev)
return 0;
-err_restore:
- if (dev->config->destroy_avq)
- dev->config->destroy_avq(dev);
err:
virtio_add_status(dev, VIRTIO_CONFIG_S_FAILED);
return ret;
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 7c5516ae1f8a..267643bb1cd5 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -262,9 +262,6 @@ void vp_del_vqs(struct virtio_device *vdev)
int i;
list_for_each_entry_safe(vq, n, &vdev->vqs, list) {
- if (vp_dev->is_avq && vp_dev->is_avq(vdev, vq->index))
- continue;
-
if (vp_dev->per_vq_vectors) {
int v = vp_dev->vqs[vq->index]->msix_vector;
@@ -371,14 +368,23 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
struct irq_affinity *desc)
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
+ struct virtio_pci_admin_vq *avq = &vp_dev->admin_vq;
struct virtqueue_info *vqi;
int i, err, nvectors, allocated_vectors, queue_idx = 0;
+ struct virtqueue *vq;
bool per_vq_vectors;
+ u16 avq_num = 0;
vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL);
if (!vp_dev->vqs)
return -ENOMEM;
+ if (vp_dev->avq_index) {
+ err = vp_dev->avq_index(vdev, &avq->vq_index, &avq_num);
+ if (err)
+ goto error_find;
+ }
+
per_vq_vectors = vector_policy != VP_VQ_VECTOR_POLICY_SHARED;
if (per_vq_vectors) {
@@ -415,6 +421,18 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
goto error_find;
}
}
+
+ if (!avq_num)
+ return 0;
+ sprintf(avq->name, "avq.%u", avq->vq_index);
+ vq = vp_find_one_vq_msix(vdev, avq->vq_index, NULL, avq->name, false,
+ true, &allocated_vectors, vector_policy,
+ &vp_dev->admin_vq.info);
+ if (IS_ERR(vq)) {
+ err = PTR_ERR(vq);
+ goto error_find;
+ }
+
return 0;
error_find:
@@ -427,12 +445,21 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs,
struct virtqueue_info vqs_info[])
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
+ struct virtio_pci_admin_vq *avq = &vp_dev->admin_vq;
int i, err, queue_idx = 0;
+ struct virtqueue *vq;
+ u16 avq_num = 0;
vp_dev->vqs = kcalloc(nvqs, sizeof(*vp_dev->vqs), GFP_KERNEL);
if (!vp_dev->vqs)
return -ENOMEM;
+ if (vp_dev->avq_index) {
+ err = vp_dev->avq_index(vdev, &avq->vq_index, &avq_num);
+ if (err)
+ goto out_del_vqs;
+ }
+
err = request_irq(vp_dev->pci_dev->irq, vp_interrupt, IRQF_SHARED,
dev_name(&vdev->dev), vp_dev);
if (err)
@@ -456,6 +483,16 @@ static int vp_find_vqs_intx(struct virtio_device *vdev, unsigned int nvqs,
}
}
+ if (!avq_num)
+ return 0;
+ sprintf(avq->name, "avq.%u", avq->vq_index);
+ vq = vp_setup_vq(vdev, queue_idx++, NULL, avq->name, false,
+ VIRTIO_MSI_NO_VECTOR, &vp_dev->admin_vq.info);
+ if (IS_ERR(vq)) {
+ err = PTR_ERR(vq);
+ goto out_del_vqs;
+ }
+
return 0;
out_del_vqs:
vp_del_vqs(vdev);
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h
index aa43875b6353..de59bb06ec3c 100644
--- a/drivers/virtio/virtio_pci_common.h
+++ b/drivers/virtio/virtio_pci_common.h
@@ -44,7 +44,7 @@ struct virtio_pci_vq_info {
struct virtio_pci_admin_vq {
/* Virtqueue info associated with this admin queue. */
- struct virtio_pci_vq_info info;
+ struct virtio_pci_vq_info *info;
/* serializing admin commands execution. */
struct mutex cmd_lock;
u64 supported_cmds;
@@ -105,7 +105,7 @@ struct virtio_pci_device {
void (*del_vq)(struct virtio_pci_vq_info *info);
u16 (*config_vector)(struct virtio_pci_device *vp_dev, u16 vector);
- bool (*is_avq)(struct virtio_device *vdev, unsigned int index);
+ int (*avq_index)(struct virtio_device *vdev, u16 *index, u16 *num);
};
/* Constants for MSI-X */
diff --git a/drivers/virtio/virtio_pci_modern.c b/drivers/virtio/virtio_pci_modern.c
index d704947b1aec..5ceb4b2c18df 100644
--- a/drivers/virtio/virtio_pci_modern.c
+++ b/drivers/virtio/virtio_pci_modern.c
@@ -63,7 +63,7 @@ static int virtqueue_exec_admin_cmd(struct virtio_pci_admin_vq *admin_vq,
struct virtqueue *vq;
int ret, len;
- vq = admin_vq->info.vq;
+ vq = admin_vq->info->vq;
if (!vq)
return -EIO;
@@ -203,27 +203,12 @@ end:
static void vp_modern_avq_activate(struct virtio_device *vdev)
{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
- struct virtio_pci_admin_vq *admin_vq = &vp_dev->admin_vq;
-
if (!virtio_has_feature(vdev, VIRTIO_F_ADMIN_VQ))
return;
- __virtqueue_unbreak(admin_vq->info.vq);
virtio_pci_admin_cmd_list_init(vdev);
}
-static void vp_modern_avq_deactivate(struct virtio_device *vdev)
-{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
- struct virtio_pci_admin_vq *admin_vq = &vp_dev->admin_vq;
-
- if (!virtio_has_feature(vdev, VIRTIO_F_ADMIN_VQ))
- return;
-
- __virtqueue_break(admin_vq->info.vq);
-}
-
static void vp_transport_features(struct virtio_device *vdev, u64 features)
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
@@ -418,8 +403,6 @@ static void vp_reset(struct virtio_device *vdev)
while (vp_modern_get_status(mdev))
msleep(1);
- vp_modern_avq_deactivate(vdev);
-
/* Flush pending VQ/configuration callbacks. */
vp_synchronize_vectors(vdev);
}
@@ -595,9 +578,6 @@ static struct virtqueue *setup_vq(struct virtio_pci_device *vp_dev,
goto err;
}
- if (is_avq)
- vp_dev->admin_vq.info.vq = vq;
-
return vq;
err:
@@ -741,41 +721,6 @@ static bool vp_get_shm_region(struct virtio_device *vdev,
return true;
}
-static int vp_modern_create_avq(struct virtio_device *vdev)
-{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
- struct virtio_pci_admin_vq *avq = &vp_dev->admin_vq;
- struct virtqueue *vq;
- u16 num;
- int err;
-
- err = vp_avq_index(vdev, &avq->vq_index, &num);
- if (err || !num)
- return err;
-
- sprintf(avq->name, "avq.%u", avq->vq_index);
- vq = vp_dev->setup_vq(vp_dev, &vp_dev->admin_vq.info, avq->vq_index, NULL,
- avq->name, NULL, VIRTIO_MSI_NO_VECTOR);
- if (IS_ERR(vq)) {
- dev_err(&vdev->dev, "failed to setup admin virtqueue, err=%ld",
- PTR_ERR(vq));
- return PTR_ERR(vq);
- }
-
- vp_modern_set_queue_enable(&vp_dev->mdev, avq->info.vq->index, true);
- return 0;
-}
-
-static void vp_modern_destroy_avq(struct virtio_device *vdev)
-{
- struct virtio_pci_device *vp_dev = to_vp_device(vdev);
-
- if (!virtio_has_feature(vdev, VIRTIO_F_ADMIN_VQ))
- return;
-
- vp_dev->del_vq(&vp_dev->admin_vq.info);
-}
-
static const struct virtio_config_ops virtio_pci_config_nodev_ops = {
.get = NULL,
.set = NULL,
@@ -794,8 +739,6 @@ static const struct virtio_config_ops virtio_pci_config_nodev_ops = {
.get_shm_region = vp_get_shm_region,
.disable_vq_and_reset = vp_modern_disable_vq_and_reset,
.enable_vq_after_reset = vp_modern_enable_vq_after_reset,
- .create_avq = vp_modern_create_avq,
- .destroy_avq = vp_modern_destroy_avq,
};
static const struct virtio_config_ops virtio_pci_config_ops = {
@@ -816,8 +759,6 @@ static const struct virtio_config_ops virtio_pci_config_ops = {
.get_shm_region = vp_get_shm_region,
.disable_vq_and_reset = vp_modern_disable_vq_and_reset,
.enable_vq_after_reset = vp_modern_enable_vq_after_reset,
- .create_avq = vp_modern_create_avq,
- .destroy_avq = vp_modern_destroy_avq,
};
/* the PCI probing function */
@@ -841,7 +782,7 @@ int virtio_pci_modern_probe(struct virtio_pci_device *vp_dev)
vp_dev->config_vector = vp_config_vector;
vp_dev->setup_vq = setup_vq;
vp_dev->del_vq = del_vq;
- vp_dev->is_avq = vp_is_avq;
+ vp_dev->avq_index = vp_avq_index;
vp_dev->isr = mdev->isr;
vp_dev->vdev.id = mdev->id;
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
index ab4b9a3fef6b..169c7d367fac 100644
--- a/include/linux/virtio_config.h
+++ b/include/linux/virtio_config.h
@@ -104,8 +104,6 @@ struct virtqueue_info {
* Returns 0 on success or error status
* If disable_vq_and_reset is set, then enable_vq_after_reset must also be
* set.
- * @create_avq: create admin virtqueue resource.
- * @destroy_avq: destroy admin virtqueue resource.
*/
struct virtio_config_ops {
void (*get)(struct virtio_device *vdev, unsigned offset,
@@ -133,8 +131,6 @@ struct virtio_config_ops {
struct virtio_shm_region *region, u8 id);
int (*disable_vq_and_reset)(struct virtqueue *vq);
int (*enable_vq_after_reset)(struct virtqueue *vq);
- int (*create_avq)(struct virtio_device *vdev);
- void (*destroy_avq)(struct virtio_device *vdev);
};
/* If driver didn't advertise the feature, it will never appear. */
generated by cgit (git 2.34.1) at 2025-05-19 17:55:08 +0000