diff options
| author | Mika Westerberg <mika.westerberg@linux.intel.com> | 2017-02-19 23:43:26 +0200 |
|---|---|---|
| committer | Mika Westerberg <mika.westerberg@linux.intel.com> | 2019-04-18 11:18:53 +0300 |
| commit | 0414bec5f39a3c73fa56474b1bcd899101c2727d (patch) | |
| tree | e1a9715e38db40ea9b783be0129959f09b7f6311 /drivers/thunderbolt/tunnel.h | |
| parent | aae9e27f3b72ed58d6b87c8f511e7812601a93c5 (diff) | |
thunderbolt: Discover preboot PCIe paths the boot firmware established
In Apple Macs the boot firmware (EFI) connects all devices automatically
when the system is started, before it hands over to the OS. Instead of
ignoring we discover all those PCIe tunnels and record them using our
internal structures, just like we do when a device is connected after
the OS is already up.
By doing this we can properly tear down tunnels when devices are
disconnected. Also this allows us to resume the existing tunnels after
system suspend/resume cycle.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt/tunnel.h')
| -rw-r--r-- | drivers/thunderbolt/tunnel.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/thunderbolt/tunnel.h b/drivers/thunderbolt/tunnel.h index b4e992165e56..07bf587bed80 100644 --- a/drivers/thunderbolt/tunnel.h +++ b/drivers/thunderbolt/tunnel.h @@ -15,7 +15,8 @@ * struct tb_tunnel - Tunnel between two ports * @tb: Pointer to the domain * @src_port: Source port of the tunnel - * @dst_port: Destination port of the tunnel + * @dst_port: Destination port of the tunnel. For discovered incomplete + * tunnels may be %NULL or null adapter port instead. * @paths: All paths required by the tunnel * @npaths: Number of paths in @paths * @activate: Optional tunnel specific activation/deactivation @@ -31,6 +32,7 @@ struct tb_tunnel { struct list_head list; }; +struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down); struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up, struct tb_port *down); void tb_tunnel_free(struct tb_tunnel *tunnel); |