Virtio interface

This attempts to implement a "virtual I/O" layer which should allow
common drivers to be efficiently used across most virtual I/O
mechanisms.  It will no-doubt need further enhancement.

The virtio drivers add buffers to virtio queues; as the buffers are consumed
the driver "interrupt" callbacks are invoked.

There is also a generic implementation of config space which drivers can query
to get setup information from the host.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dor Laor <dor.laor@qumranet.com>
Cc: Arnd Bergmann <arnd@arndb.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 522b0dd836cf..e9fddb42f26c 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -361,4 +361,10 @@ struct ssb_device_id {
 #define SSB_ANY_ID              0xFFFF
 #define SSB_ANY_REV             0xFF
 
+struct virtio_device_id {
+        __u32 device;
+        __u32 vendor;
+};
+#define VIRTIO_DEV_ANY_ID       0xffffffff
+
 #endif /* LINUX_MOD_DEVICETABLE_H */