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| author | Andreas Noever <andreas.noever@gmail.com> | 2014-06-03 22:04:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-19 23:07:47 +0200 |
| commit | 3364f0c12795713e89ae1209081c60d64bfb4ca1 (patch) | |
| tree | c13a0c83e2a0268bb2af82a34f10732a6b46312b /drivers/thunderbolt/tunnel_pci.h | |
| parent | thunderbolt: Add path setup code. (diff) | |
| download | linux-3364f0c12795713e89ae1209081c60d64bfb4ca1.tar.xz linux-3364f0c12795713e89ae1209081c60d64bfb4ca1.zip | |
thunderbolt: Add support for simple pci tunnels
A pci downstream and pci upstream port can be connected through a
tunnel. To establish the tunnel we have to setup two unidirectional
paths between the two ports.
Right now we only support paths with two hops (i.e. no chaining) and at
most one pci device per thunderbolt device.
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/thunderbolt/tunnel_pci.h')
| -rw-r--r-- | drivers/thunderbolt/tunnel_pci.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/thunderbolt/tunnel_pci.h b/drivers/thunderbolt/tunnel_pci.h new file mode 100644 index 000000000000..a67f93c140fa --- /dev/null +++ b/drivers/thunderbolt/tunnel_pci.h @@ -0,0 +1,30 @@ +/* + * Thunderbolt Cactus Ridge driver - PCIe tunnel + * + * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com> + */ + +#ifndef TB_PCI_H_ +#define TB_PCI_H_ + +#include "tb.h" + +struct tb_pci_tunnel { + struct tb *tb; + struct tb_port *up_port; + struct tb_port *down_port; + struct tb_path *path_to_up; + struct tb_path *path_to_down; + struct list_head list; +}; + +struct tb_pci_tunnel *tb_pci_alloc(struct tb *tb, struct tb_port *up, + struct tb_port *down); +void tb_pci_free(struct tb_pci_tunnel *tunnel); +int tb_pci_activate(struct tb_pci_tunnel *tunnel); +int tb_pci_restart(struct tb_pci_tunnel *tunnel); +void tb_pci_deactivate(struct tb_pci_tunnel *tunnel); +bool tb_pci_is_invalid(struct tb_pci_tunnel *tunnel); + +#endif + |