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| author | Gil Fine <gil.fine@linux.intel.com> | 2023-07-31 05:25:40 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2023-10-20 18:18:01 +0300 |
| commit | 582e70b0d3a412d15389a3c9c07a44791b311715 (patch) | |
| tree | 95c598c22eea375379f978ea493c1dc3beb6db64 /drivers/thunderbolt/tunnel.h | |
| parent | aa673d606078da36ebc379f041c794228ac08cb5 (diff) | |
| download | lwn-582e70b0d3a412d15389a3c9c07a44791b311715.tar.gz lwn-582e70b0d3a412d15389a3c9c07a44791b311715.zip | |
thunderbolt: Change bandwidth reservations to comply USB4 v2
USB4 v2 Connection Manager guide (section 6.1.2.3) suggests to reserve
bandwidth in a sligthly different manner. It suggests to keep minimum of
1500 Mb/s for each path that carry a bulk traffic. Here we change the
bandwidth reservations to comply to the above for USB 3.x and PCIe
protocols over Gen 4 link, taking weights into account (that's 1500 Mb/s
for PCIe and 3000 Mb/s for USB 3.x).
For Gen 3 and below we use the existing reservation.
Signed-off-by: Gil Fine <gil.fine@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tunnel.h')
| -rw-r--r-- | drivers/thunderbolt/tunnel.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tunnel.h b/drivers/thunderbolt/tunnel.h index 750ebb570d99..b4cff5482112 100644 --- a/drivers/thunderbolt/tunnel.h +++ b/drivers/thunderbolt/tunnel.h @@ -80,6 +80,8 @@ struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down, bool alloc_hopid); struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up, struct tb_port *down); +bool tb_tunnel_reserved_pci(struct tb_port *port, int *reserved_up, + int *reserved_down); struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in, bool alloc_hopid); struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in, |