diff options
| author | Yishai Hadas <yishaih@nvidia.com> | 2023-12-19 11:32:43 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-12-19 11:51:32 -0700 |
| commit | f51e146f1e5c9de02433e51f5a344556502d9c6a (patch) | |
| tree | fb7c89757bf27f1713579369b7c380a54b9ca1ad /drivers/virtio/virtio_pci_common.h | |
| parent | 388431b9f59bbfde2b5f2fe032b0836158b09ad0 (diff) | |
virtio-pci: Initialize the supported admin commands
Initialize the supported admin commands upon activating the admin queue.
The supported commands are saved as part of the admin queue context.
Next patches in this series will expose APIs to use them.
Reviewed-by: Feng Liu <feliu@nvidia.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/20231219093247.170936-6-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/virtio/virtio_pci_common.h')
| -rw-r--r-- | drivers/virtio/virtio_pci_common.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci_common.h b/drivers/virtio/virtio_pci_common.h index 282d087a9266..a39bffd5fd46 100644 --- a/drivers/virtio/virtio_pci_common.h +++ b/drivers/virtio/virtio_pci_common.h @@ -47,6 +47,7 @@ struct virtio_pci_admin_vq { struct virtio_pci_vq_info info; /* serializing admin commands execution and virtqueue deletion */ struct mutex cmd_lock; + u64 supported_cmds; /* Name of the admin queue: avq.$vq_index. */ char name[10]; u16 vq_index; @@ -155,6 +156,24 @@ static inline void virtio_pci_legacy_remove(struct virtio_pci_device *vp_dev) int virtio_pci_modern_probe(struct virtio_pci_device *); void virtio_pci_modern_remove(struct virtio_pci_device *); +#define VIRTIO_LEGACY_ADMIN_CMD_BITMAP \ + (BIT_ULL(VIRTIO_ADMIN_CMD_LEGACY_COMMON_CFG_WRITE) | \ + BIT_ULL(VIRTIO_ADMIN_CMD_LEGACY_COMMON_CFG_READ) | \ + BIT_ULL(VIRTIO_ADMIN_CMD_LEGACY_DEV_CFG_WRITE) | \ + BIT_ULL(VIRTIO_ADMIN_CMD_LEGACY_DEV_CFG_READ) | \ + BIT_ULL(VIRTIO_ADMIN_CMD_LEGACY_NOTIFY_INFO)) + +/* Unlike modern drivers which support hardware virtio devices, legacy drivers + * assume software-based devices: e.g. they don't use proper memory barriers + * on ARM, use big endian on PPC, etc. X86 drivers are mostly ok though, more + * or less by chance. For now, only support legacy IO on X86. + */ +#ifdef CONFIG_VIRTIO_PCI_ADMIN_LEGACY +#define VIRTIO_ADMIN_CMD_BITMAP VIRTIO_LEGACY_ADMIN_CMD_BITMAP +#else +#define VIRTIO_ADMIN_CMD_BITMAP 0 +#endif + int vp_modern_admin_cmd_exec(struct virtio_device *vdev, struct virtio_admin_cmd *cmd); |