diff options
| author | Nikunj A Dadhania <nikunj@linux.vnet.ibm.com> | 2016-02-01 11:18:05 +0530 |
|---|---|---|
| committer | Alexey Kardashevskiy <aik@ozlabs.ru> | 2016-02-08 16:40:39 +1100 |
| commit | ff9b0bd159ddb843d32f24e66a43fe99c920a00b (patch) | |
| tree | 8a3802ed50ab33f441daf393f0e012d90535b45f /lib/libvirtio/virtio.h | |
| parent | 5ed17500f03913f3f125ecde14aa041c6235ba08 (diff) | |
| download | SLOF-ff9b0bd159ddb843d32f24e66a43fe99c920a00b.zip SLOF-ff9b0bd159ddb843d32f24e66a43fe99c920a00b.tar.gz SLOF-ff9b0bd159ddb843d32f24e66a43fe99c920a00b.tar.bz2 | |
virtio: add virtio 1.0 related struct and defines
Traditionally, struct virtio_device is shared between SLOF and C code.
This still remains shared with the addition of virtio_cap structure as
well. Now both virtio_device and virtio_cap structures are shared.
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Diffstat (limited to 'lib/libvirtio/virtio.h')
| -rw-r--r-- | lib/libvirtio/virtio.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/lib/libvirtio/virtio.h b/lib/libvirtio/virtio.h index 75de5ec..ebfc726 100644 --- a/lib/libvirtio/virtio.h +++ b/lib/libvirtio/virtio.h @@ -20,8 +20,17 @@ #define VIRTIO_STAT_ACKNOWLEDGE 1 #define VIRTIO_STAT_DRIVER 2 #define VIRTIO_STAT_DRIVER_OK 4 +#define VIRTIO_STAT_FEATURES_OK 8 +#define VIRTIO_STAT_NEEDS_RESET 64 #define VIRTIO_STAT_FAILED 128 +#define BIT(x) (1UL << (x)) + +/* VIRTIO 1.0 Device independent feature bits */ +#define VIRTIO_F_RING_INDIRECT_DESC BIT(28) +#define VIRTIO_F_RING_EVENT_IDX BIT(29) +#define VIRTIO_F_VERSION_1 BIT(32) + #define VIRTIO_TIMEOUT 5000 /* 5 sec timeout */ /* Definitions for vring_desc.flags */ @@ -61,9 +70,26 @@ struct vring_used { struct vring_used_elem ring[]; }; +/* Structure shared with SLOF and is 16bytes */ +struct virtio_cap { + void *addr; + uint8_t bar; + uint8_t is_io; + uint8_t cap_id; + uint8_t pad[5]; +} __attribute__ ((packed)); + struct virtio_device { void *base; /* base address */ -}; + uint32_t is_modern; /* Indicates whether to use virtio 1.0 */ + struct virtio_cap legacy; + struct virtio_cap common; + struct virtio_cap notify; + struct virtio_cap isr; + struct virtio_cap device; + struct virtio_cap pci; + uint32_t notify_off_mul; +} __attribute__ ((packed)); struct vqs { uint64_t id; /* Queue ID */ |