Re: [Qemu-devel] [v2][RFC][PATCH] virtio: uniform virtio device IDs

["Chen, Tiejun" <tiejun.chen@intel.com>]

On 2015/2/8 18:48, Michael S. Tsirkin wrote:
> On Fri, Feb 06, 2015 at 01:14:46PM +0100, Cornelia Huck wrote:
>> On Fri,  6 Feb 2015 13:41:26 +0800
>> Tiejun Chen <tiejun.chen@intel.com> wrote:
>>
>>> Actually we define these device IDs in virtio standard, so
>>> we'd better put them into one common place to manage conveniently.
>>> Here I also add VIRTIO_ID_RESERVE according to virtio spec.
>>>
>>> Signed-off-by: Tiejun Chen <tiejun.chen@intel.com>
>
> We really should just write a script to import the headers
> from the linux kernel.
> They will need some tweaks to avoid dependencies on
> linux/types, but this seems easy to do - better than
> trying to keep things in sync manually.

I prefer Cornelia's comment since actually we're trying to define a 
little bit according to a spec, so the following may be enough?

diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index f24997d..4afb0b7 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -23,6 +23,22 @@
  #include "hw/virtio/virtio-9p.h"
  #endif

+/* Refer to VirtIO Spec 1.0. */
+
+#define VIRTIO_ID_RESERVED  0           /* reserved (invalid)*/
+#define VIRTIO_ID_NET       1           /* network card */
+#define VIRTIO_ID_BLOCK     2           /* block device */
+#define VIRTIO_ID_CONSOLE   3           /* console */
+#define VIRTIO_ID_RNG       4           /* entropy source */
+#define VIRTIO_ID_BALLOON   5           /* memory ballooning */
+#define VIRTIO_ID_IOMEMORY  6           /* ioMemory */
+#define VIRTIO_ID_RPMSG     7           /* rpmsg */
+#define VIRTIO_ID_SCSI      8           /* SCSI host */
+#define VIRTIO_ID_9P        9           /* 9P transport */
+#define VIRTIO_ID_MAC80211_WALN 10      /* mac80211 wlan */
+#define VIRTIO_ID_RPROC_SERIAL  11      /* rproc seria */
+#define VIRTIO_ID_CAIF      12          /* virtio CAIF */
+
  /* from Linux's linux/virtio_config.h */

  /* Status byte for guest to report progress, and synchronize features. */

Thanks
Tiejun