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| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2018-09-28 16:35:32 +0300 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-04-18 11:18:53 +0300 |
| commit | 44242d6c9703208e7e7abd6b4dbb258a930dd01a (patch) | |
| tree | e6705e5cbff04126399d3ebb8a8a4677b9aa8ce1 /drivers/thunderbolt/tb_regs.h | |
| parent | 3b4b3235ca5bf1b69ff15a269d9881b2604dd4fa (diff) | |
| download | linux-44242d6c9703208e7e7abd6b4dbb258a930dd01a.tar.xz | |
thunderbolt: Add support for DMA tunnels
In addition to PCIe and Display Port tunnels it is also possible to
create tunnels that forward DMA traffic from the host interface adapter
(NHI) to a NULL port that is connected to another domain through a
Thunderbolt cable. These tunnels can be used to carry software messages
such as networking packets.
To support this we introduce another tunnel type (TB_TUNNEL_DMA) that
supports paths from NHI to NULL port and back.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tb_regs.h')
| -rw-r--r-- | drivers/thunderbolt/tb_regs.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tb_regs.h b/drivers/thunderbolt/tb_regs.h index 3ce705184e2c..deb9d4a977b9 100644 --- a/drivers/thunderbolt/tb_regs.h +++ b/drivers/thunderbolt/tb_regs.h @@ -215,6 +215,9 @@ struct tb_regs_port_header { #define TB_PORT_NFC_CREDITS_MASK GENMASK(19, 0) #define TB_PORT_MAX_CREDITS_SHIFT 20 #define TB_PORT_MAX_CREDITS_MASK GENMASK(26, 20) +/* DWORD 5 */ +#define TB_PORT_LCA_SHIFT 22 +#define TB_PORT_LCA_MASK GENMASK(28, 22) /* Display Port adapter registers */ |