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| author | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 07:31:14 +0300 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2015-02-11 07:33:15 +0300 |
| commit | e6a02746e0a9cdda5114db912fe2aadfed289aae (patch) | |
| tree | 74a5d68568761e4dfad5e11cd1504d73c5b90a11 /include/uapi/linux/virtio_pci.h | |
| parent | 5e05bf5833eb3dd97b6b6a52301d81e033714cb3 (diff) | |
| download | linux-e6a02746e0a9cdda5114db912fe2aadfed289aae.tar.xz | |
virtio: define VIRTIO_PCI_CAP_PCI_CFG in header.
This provides backdoor access to the device MMIOs, and every device should
have one. From the virtio 1.0 spec (CS03):
4.1.4.7.1 Device Requirements: PCI configuration access capability
The device MUST present at least one VIRTIO_PCI_CAP_PCI_CFG capability.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/uapi/linux/virtio_pci.h')
| -rw-r--r-- | include/uapi/linux/virtio_pci.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index 3b7e4d2765fb..75301468359f 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -109,8 +109,10 @@ #define VIRTIO_PCI_CAP_NOTIFY_CFG 2 /* ISR access */ #define VIRTIO_PCI_CAP_ISR_CFG 3 -/* Device specific confiuration */ +/* Device specific configuration */ #define VIRTIO_PCI_CAP_DEVICE_CFG 4 +/* PCI configuration access */ +#define VIRTIO_PCI_CAP_PCI_CFG 5 /* This is the PCI capability header: */ struct virtio_pci_cap { |