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remoteproc: Decouple vdev resources and devices

Browse source 
Represent the virtio device part of the vdev resources as remoteproc
subdevices to finalize the decoupling of the virtio resource and device
handling.

Signed-off-by: Bjorn Andersson <[email protected]>
This commit is contained in:
Bjorn Andersson 2016-10-19 19:40:09 -07:00
commit f5bcb35387
2 changed files with 25 additions and 15 deletions
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35
drivers/remoteproc/remoteproc_core.c
View file

@ -296,6 +296,20 @@ void rproc_free_vring(struct rproc_vring *rvring)
rsc->vring[idx].notifyid = -1;
}
static int rproc_vdev_do_probe(struct rproc_subdev *subdev)
{
struct rproc_vdev *rvdev = container_of(subdev, struct rproc_vdev, subdev);
return rproc_add_virtio_dev(rvdev, rvdev->id);
}
static void rproc_vdev_do_remove(struct rproc_subdev *subdev)
{
struct rproc_vdev *rvdev = container_of(subdev, struct rproc_vdev, subdev);
rproc_remove_virtio_dev(rvdev);
}
/**
* rproc_handle_vdev() - handle a vdev fw resource
* @rproc: the remote processor
@ -358,6 +372,7 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
kref_init(&rvdev->refcount);
rvdev->id = rsc->id;
rvdev->rproc = rproc;
/* parse the vrings */
@ -382,18 +397,14 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
list_add_tail(&rvdev->node, &rproc->rvdevs);
/* it is now safe to add the virtio device */
ret = rproc_add_virtio_dev(rvdev, rsc->id);
if (ret)
goto remove_rvdev;
rproc_add_subdev(rproc, &rvdev->subdev,
rproc_vdev_do_probe, rproc_vdev_do_remove);
return 0;
unwind_vring_allocations:
for (i--; i >= 0; i--)
rproc_free_vring(&rvdev->vring[i]);
remove_rvdev:
list_del(&rvdev->node);
free_rvdev:
kfree(rvdev);
return ret;
@ -403,6 +414,7 @@ void rproc_vdev_release(struct kref *ref)
{
struct rproc_vdev *rvdev = container_of(ref, struct rproc_vdev, refcount);
struct rproc_vring *rvring;
struct rproc *rproc = rvdev->rproc;
int id;
for (id = 0; id < ARRAY_SIZE(rvdev->vring); id++) {
@ -413,6 +425,7 @@ void rproc_vdev_release(struct kref *ref)
rproc_free_vring(rvring);
}
rproc_remove_subdev(rproc, &rvdev->subdev);
list_del(&rvdev->node);
kfree(rvdev);
}
@ -842,10 +855,8 @@ static void rproc_resource_cleanup(struct rproc *rproc)
}
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node) {
rproc_remove_virtio_dev(rvdev);
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node)
kref_put(&rvdev->refcount, rproc_vdev_release);
}
}
/*
@ -1507,8 +1518,6 @@ EXPORT_SYMBOL(rproc_put);
*/
int rproc_del(struct rproc *rproc)
{
struct rproc_vdev *rvdev, *tmp;
if (!rproc)
return -EINVAL;
@ -1520,10 +1529,6 @@ int rproc_del(struct rproc *rproc)
if (rproc->auto_boot)
rproc_shutdown(rproc);
/* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, tmp, &rproc->rvdevs, node)
rproc_remove_virtio_dev(rvdev);
/* the rproc is downref'ed as soon as it's removed from the klist */
mutex_lock(&rproc_list_mutex);
list_del(&rproc->node);