diff options
Diffstat (limited to 'drivers/thunderbolt/tb.h')
| -rw-r--r-- | drivers/thunderbolt/tb.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index cd6c9eeaf049..2953cf38c29e 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -224,6 +224,23 @@ struct tb_switch { }; /** + * struct tb_bandwidth_group - Bandwidth management group + * @tb: Pointer to the domain the group belongs to + * @index: Index of the group (aka Group_ID). Valid values %1-%7 + * @ports: DP IN adapters belonging to this group are linked here + * + * Any tunnel that requires isochronous bandwidth (that's DP for now) is + * attached to a bandwidth group. All tunnels going through the same + * USB4 links share the same group and can dynamically distribute the + * bandwidth within the group. + */ +struct tb_bandwidth_group { + struct tb *tb; + int index; + struct list_head ports; +}; + +/** * struct tb_port - a thunderbolt port, part of a tb_switch * @config: Cached port configuration read from registers * @sw: Switch the port belongs to @@ -247,6 +264,9 @@ struct tb_switch { * @ctl_credits: Buffers reserved for control path * @dma_credits: Number of credits allocated for DMA tunneling for all * DMA paths through this port. + * @group: Bandwidth allocation group the adapter is assigned to. Only + * used for DP IN adapters for now. + * @group_list: The adapter is linked to the group's list of ports through this * * In USB4 terminology this structure represents an adapter (protocol or * lane adapter). @@ -272,6 +292,8 @@ struct tb_port { unsigned int total_credits; unsigned int ctl_credits; unsigned int dma_credits; + struct tb_bandwidth_group *group; + struct list_head group_list; }; /** |