Changeset cbcb34c in mainline for uspace/lib/virtio/virtio-pci.h

Timestamp:

2018-05-22T19:06:50Z (7 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

341df5f

Parents:

1c53d93

git-author:

Jakub Jermar <jakub@…> (2018-05-05 14:43:51)

git-committer:

Jakub Jermar <jakub@…> (2018-05-22 19:06:50)

Message:

Configure the virtqueues

File:

• uspace/lib/virtio/virtio-pci.h (modified) (2 diffs)

uspace/lib/virtio/virtio-pci.h

@@ -124 +124 @@
 } virtq_used_t;
 
+typedef struct {
+        void *virt;
+        uintptr_t phys;
+        size_t size;
+
+        /**
+         * Size of the queue which determines the number of descriptors and
+         * DMA buffers.
+         */
+        size_t queue_size;
+
+        /** Virtual address of queue size virtq descriptors */
+        virtq_desc_t *desc;
+        /** Virtual address of the available ring */
+        virtq_avail_t *avail;
+        /** Virtual address of the used ring */
+        virtq_used_t *used;
+
+        /**
+         * Queue-size-sized array of virtual addresses of the atcual DMA
+         * buffers.
+         */
+        void **buffers;
+} virtq_t;
+
 /** VIRTIO-device specific data associated with the NIC framework nic_t */
 typedef struct {
@@ -145 +170 @@
         /** Device-specific configuration */
         void *device_cfg;
+
+        /** Virtqueues */
+        virtq_t *queues;
 } virtio_dev_t;
+
+extern errno_t virtio_virtq_setup(virtio_dev_t *, uint16_t, uint16_t, size_t,
+    uint16_t);
+extern void virtio_virtq_teardown(virtio_dev_t *, uint16_t);
 
 extern errno_t virtio_pci_dev_initialize(ddf_dev_t *, virtio_dev_t *);