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linux/drivers/thunderbolt/tb.c

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thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Add tb_regs.h Every thunderbolt device consists (logically) of a switch with multiple ports. Every port contains up to four config regions (HOPS, PORT, SWITCH, COUNTERS) which are used to configure the device. The tb_regs.h file contains all known registers and capabilities from these config regions. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:01 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Scan for downstream switches Add utility methods tb_port_state and tb_wait_for_port. Add tb_scan_switch which recursively checks for downstream switches. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:05 +02:00
thunderbolt: Fix nontrivial endpoint devices. Fix issues observed with the Startech docking station: Fix the type of the route parameter in tb_ctl_rx. It should be u64 and not u8 (which only worked for short routes). A thunderbolt cable contains two lanes. If both endpoints support it a connection will be established on both lanes. Previously we tried to scan below both "dual link ports". Use the information extracted from the drom to only scan behind ports with lane_nr == 0. Endpoints with more complex thunderbolt controllers have some of their ports disabled (for example the NHI port or one of the HDMI/DP ports). Accessing them results in an error so we now ignore ports which are marked as disabled in the drom. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-12 23:11:47 +02:00
thunderbolt: Scan for downstream switches Add utility methods tb_port_state and tb_wait_for_port. Add tb_scan_switch which recursively checks for downstream switches. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:05 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Add suspend/hibernate support We use _noirq since we have to restore the pci tunnels before the pci core wakes the tunneled devices. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:12 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Scan for downstream switches Add utility methods tb_port_state and tb_wait_for_port. Add tb_scan_switch which recursively checks for downstream switches. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:05 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Handle hotplug events We receive a plug event callback whenever a thunderbolt device is added or removed. This patch fills in the tb_handle_hotplug method and starts reacting to these events by adding/removing switches from the hierarchy. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:06 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Handle hotplug events We receive a plug event callback whenever a thunderbolt device is added or removed. This patch fills in the tb_handle_hotplug method and starts reacting to these events by adding/removing switches from the hierarchy. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:06 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Handle hotplug events We receive a plug event callback whenever a thunderbolt device is added or removed. This patch fills in the tb_handle_hotplug method and starts reacting to these events by adding/removing switches from the hierarchy. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:06 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Handle hotplug events We receive a plug event callback whenever a thunderbolt device is added or removed. This patch fills in the tb_handle_hotplug method and starts reacting to these events by adding/removing switches from the hierarchy. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:06 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Initialize root switch and ports This patch adds the structures tb_switch and tb_port as well as code to initialize the root switch. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:02 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Add tb_regs.h Every thunderbolt device consists (logically) of a switch with multiple ports. Every port contains up to four config regions (HOPS, PORT, SWITCH, COUNTERS) which are used to configure the device. The tb_regs.h file contains all known registers and capabilities from these config regions. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:01 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Initialize root switch and ports This patch adds the structures tb_switch and tb_port as well as code to initialize the root switch. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:02 +02:00
thunderbolt: Scan for downstream switches Add utility methods tb_port_state and tb_wait_for_port. Add tb_scan_switch which recursively checks for downstream switches. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:05 +02:00
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>
2014-06-03 22:04:08 +02:00
thunderbolt: Scan for downstream switches Add utility methods tb_port_state and tb_wait_for_port. Add tb_scan_switch which recursively checks for downstream switches. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:05 +02:00
thunderbolt: Setup control channel Add struct tb which will contain our view of the thunderbolt bus. For now it just contains a pointer to the control channel and a workqueue for hotplug events. Add thunderbolt_alloc_and_start() and thunderbolt_shutdown_and_free() which are responsible for setup and teardown of struct tb. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:00 +02:00
thunderbolt: Add suspend/hibernate support We use _noirq since we have to restore the pci tunnels before the pci core wakes the tunneled devices. Signed-off-by: Andreas Noever <andreas.noever@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-06-03 22:04:12 +02:00