Changeset cede6f8 in mainline

Timestamp:

2018-05-24T17:54:02Z (6 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b085bbaa

Parents:

31cf8c3c

Message:

Enable/disable the virtq when it's set/torn down

File:

• uspace/lib/virtio/virtio.c (modified) (2 diffs)

uspace/lib/virtio/virtio.c

@@ -130 +130 @@
         ddf_msg(LVL_NOTE, "notification register: %p", q->notify);
 
+        /* Enable the queue */
+        pio_write_le16(&cfg->queue_enable, 1);
+        ddf_msg(LVL_NOTE, "virtq %d set", num);
+
         return rc;
 }
@@ -135 +139 @@
 void virtio_virtq_teardown(virtio_dev_t *vdev, uint16_t num)
 {
+        virtio_pci_common_cfg_t *cfg = vdev->common_cfg;
+
+        /* Disable the queue */
+        pio_write_le16(&cfg->queue_enable, 0);
+
         virtq_t *q = &vdev->queues[num];
         if (q->size)