From bf011293faaa7f87e4de83185931e7411b794128 Mon Sep 17 00:00:00 2001 From: john cooper Date: Mon, 22 Jun 2009 14:26:51 -0400 Subject: Add serial number support for virtio_blk [brought forward to current qemu-kvm.git] This patch implements the missing qemu logic to interpret a '-drive .. serial=XYZ ..' flag for a virtio_blk device. The serial number string is contained in a skeletal IDENTIFY DEVICE data structure and this structure is made available to the guest virtio_blk driver via pci i/o region 0. Signed-off-by: john cooper Signed-off-by: Anthony Liguori --- hw/virtio-blk.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'hw/virtio-blk.h') diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h index dff3e0c97..1be434270 100644 --- a/hw/virtio-blk.h +++ b/hw/virtio-blk.h @@ -30,6 +30,11 @@ #define VIRTIO_BLK_F_RO 5 /* Disk is read-only */ #define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/ #define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */ +#define VIRTIO_BLK_F_IDENTIFY 8 /* ATA IDENTIFY supported */ + +#define VIRTIO_BLK_ID_LEN 256 /* length of identify u16 array */ +#define VIRTIO_BLK_ID_SN 10 /* start of char * serial# */ +#define VIRTIO_BLK_ID_SN_BYTES 20 /* length in bytes of serial# */ struct virtio_blk_config { @@ -39,6 +44,8 @@ struct virtio_blk_config uint16_t cylinders; uint8_t heads; uint8_t sectors; + uint32_t _blk_size; /* structure pad, currently unused */ + uint16_t identify[VIRTIO_BLK_ID_LEN]; } __attribute__((packed)); /* These two define direction. */ -- cgit v1.2.3