Create a virtio-queue in reversed direction if requested
by the virtio device. This is done by calling the function
vring_new_host_virtqueue().
Signed-off-by: Sjur Brændeland <sjur.brandeland@xxxxxxxxxxxxxx>
---
drivers/remoteproc/remoteproc_virtio.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index a825f67..5866b03 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -69,6 +69,7 @@ EXPORT_SYMBOL(rproc_vq_interrupt);
static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
unsigned id,
+ bool revers,
void (*callback)(struct virtqueue *vq),
const char *name)
{
@@ -106,8 +107,14 @@ static struct virtqueue *rp_find_vq(struct virtio_device *vdev,
* Create the new vq, and tell virtio we're not interested in
* the 'weak' smp barriers, since we're talking with a real device.
*/
- vq = vring_new_virtqueue(id, len, rvring->align, vdev, false, addr,
- rproc_virtio_notify, callback, name);
+ if (revers)
+ vq = vring_new_host_virtqueue(id, len, rvring->align, vdev,
+ false, addr, rproc_virtio_notify,
+ callback, name);
+ else
+ vq = vring_new_virtqueue(id, len, rvring->align, vdev, false,
+ addr, rproc_virtio_notify, callback,
+ name);
if (!vq) {
dev_err(dev, "vring_new_virtqueue %s failed\n", name);
rproc_free_vring(rvring);
@@ -145,9 +152,11 @@ static int rproc_virtio_find_vqs(struct virtio_device *vdev, unsigned nvqs,
{
struct rproc *rproc = vdev_to_rproc(vdev);
int i, ret;
+ bool revers;
for (i = 0; i < nvqs; ++i) {
- vqs[i] = rp_find_vq(vdev, i, callbacks[i], names[i]);
+ revers = reversed ? reversed[i] : false;
+ vqs[i] = rp_find_vq(vdev, i, revers, callbacks[i], names[i]);
if (IS_ERR(vqs[i])) {
ret = PTR_ERR(vqs[i]);
goto error;
--
1.7.5.4
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