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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-01-08 15:25:39 +0100 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2021-03-18 16:25:31 +0100 |
| commit | 180b0689425c6fb2b35e69a3316ee38371a782df (patch) | |
| tree | bbfac79fc08f79f6f5ce66a584ed6c1ae1a127af /drivers/thunderbolt/tunnel.h | |
| parent | thunderbolt: Drop unused tb_port_set_initial_credits() (diff) | |
| download | linux-180b0689425c6fb2b35e69a3316ee38371a782df.tar.xz linux-180b0689425c6fb2b35e69a3316ee38371a782df.zip | |
thunderbolt: Allow multiple DMA tunnels over a single XDomain connection
Currently we have had an artificial limitation of a single DMA tunnel
per XDomain connection. However, hardware wise there is no such limit
and software based connection manager can take advantage of all the DMA
rings available on the host to establish tunnels.
For this reason make the tb_xdomain_[enable|disable]_paths() to take the
DMA ring and HopID as parameter instead of storing them in the struct
tb_xdomain. We also add API functions to allocate input and output
HopIDs of the XDomain connection that the service drivers can use
instead of hard-coding.
Also convert the two existing service drivers over to this API.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tunnel.h')
| -rw-r--r-- | drivers/thunderbolt/tunnel.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/thunderbolt/tunnel.h b/drivers/thunderbolt/tunnel.h index 1d2a64eb060d..a66994fb4e60 100644 --- a/drivers/thunderbolt/tunnel.h +++ b/drivers/thunderbolt/tunnel.h @@ -70,9 +70,11 @@ struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in, struct tb_port *out, int max_up, int max_down); struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi, - struct tb_port *dst, int transmit_ring, - int transmit_path, int receive_ring, - int receive_path); + struct tb_port *dst, int transmit_path, + int transmit_ring, int receive_path, + int receive_ring); +bool tb_tunnel_match_dma(const struct tb_tunnel *tunnel, int transmit_path, + int transmit_ring, int receive_path, int receive_ring); struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down); struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up, struct tb_port *down, int max_up, |