diff options
Diffstat (limited to 'kernel/virtio.h')
| -rw-r--r-- | kernel/virtio.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/virtio.h b/kernel/virtio.h index 258d107..bac215d 100644 --- a/kernel/virtio.h +++ b/kernel/virtio.h @@ -4,12 +4,15 @@ // only tested with qemu. // this is the "legacy" virtio interface. // +// the virtio spec: +// https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.pdf +// // virtio mmio control registers, mapped starting at 0x10001000. // from qemu virtio_mmio.h #define VIRTIO_MMIO_MAGIC_VALUE 0x000 // 0x74726976 -#define VIRTIO_MMIO_VERSION 0x004 // 1 -- version, 1 is legacy -#define VIRTIO_MMIO_DEVICE_ID 0x008 // 2 -- block device type +#define VIRTIO_MMIO_VERSION 0x004 // version; 1 is legacy +#define VIRTIO_MMIO_DEVICE_ID 0x008 // device type; 1 is net, 2 is disk #define VIRTIO_MMIO_VENDOR_ID 0x00c // 0x554d4551 #define VIRTIO_MMIO_DEVICE_FEATURES 0x010 #define VIRTIO_MMIO_DRIVER_FEATURES 0x020 |