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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-03-21 20:03:00 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-11-02 12:13:31 +0300 |
| commit | 91c0c12080d0f40ee7275485221b06b4e1e289e1 (patch) | |
| tree | 70e4119a7d77b11586f811906af5c8ab66ae7adc /drivers/thunderbolt/tb_msgs.h | |
| parent | b5db76dba0642ea6f2391374f3b2b479014e5bf0 (diff) | |
| download | linux-91c0c12080d0f40ee7275485221b06b4e1e289e1.tar.xz | |
thunderbolt: Add support for lane bonding
Lane bonding allows aggregating two 10/20 Gb/s (depending on the
generation) lanes into a single 20/40 Gb/s bonded link. This allows
sharing the full bandwidth more efficiently. In order to establish lane
bonding we need to check that lane bonding is possible through link
controller and that both ends of the link actually supports 2x widths.
This also means that all the paths should be established through the
primary port so update tb_path_alloc() to handle this as well.
Lane bonding is supported starting from Falcon Ridge (2nd generation)
controllers.
We also expose the current speed and number of lanes under each device
except the host router following similar attribute naming than USB bus.
Expose speed and number of lanes for both directions to allow possibility
of asymmetric link in the future.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb_msgs.h')
| -rw-r--r-- | drivers/thunderbolt/tb_msgs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb_msgs.h b/drivers/thunderbolt/tb_msgs.h index 4b641e4ee0c5..3705057723b6 100644 --- a/drivers/thunderbolt/tb_msgs.h +++ b/drivers/thunderbolt/tb_msgs.h @@ -122,6 +122,8 @@ struct icm_pkg_header { #define ICM_FLAGS_NO_KEY BIT(1) #define ICM_FLAGS_SLEVEL_SHIFT 3 #define ICM_FLAGS_SLEVEL_MASK GENMASK(4, 3) +#define ICM_FLAGS_DUAL_LANE BIT(5) +#define ICM_FLAGS_SPEED_GEN3 BIT(7) #define ICM_FLAGS_WRITE BIT(7) struct icm_pkg_driver_ready { |