wireguard-linux/drivers/thunderbolt/tb.h, branch jd/orphan-parallel

Merge tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

2020-09-30T07:42:36Z

Mika writes: thunderbolt: Changes for v5.10 merge window This includes following Thunderbolt/USB4 changes for v5.10 merge window: * A couple of optimizations around Tiger Lake force power logic and NHI (Native Host Interface) LC (Link Controller) mailbox command processing * Power management improvements for Software Connection Manager * Debugfs support * Allow KUnit tests to be enabled also when Thunderbolt driver is configured as module. * Few minor cleanups and fixes All these have been in linux-next with no reported issues. * tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (37 commits) thunderbolt: Capitalize comment on top of QUIRK_FORCE_POWER_LINK_CONTROLLER thunderbolt: Correct tb_check_quirks() kernel-doc thunderbolt: Log correct zeroX entries in decode_error() thunderbolt: Handle ERR_LOCK notification thunderbolt: Use "if USB4" instead of "depends on" in Kconfig thunderbolt: Allow KUnit tests to be built also when CONFIG_USB4=m thunderbolt: Only stop control channel when entering freeze thunderbolt: debugfs: Fix uninitialized return in counters_write() thunderbolt: Add debugfs interface thunderbolt: No need to warn in TB_CFG_ERROR_INVALID_CONFIG_SPACE thunderbolt: Introduce tb_switch_is_tiger_lake() thunderbolt: Introduce tb_switch_is_ice_lake() thunderbolt: Check for Intel vendor ID when identifying controller thunderbolt: Introduce tb_port_is_nhi() thunderbolt: Introduce tb_switch_next_cap() thunderbolt: Introduce tb_port_next_cap() thunderbolt: Move struct tb_cap_any to tb_regs.h thunderbolt: Add runtime PM for Software CM thunderbolt: Create device links from ACPI description ACPI: Export acpi_get_first_physical_node() to modules ...

thunderbolt: Capitalize comment on top of QUIRK_FORCE_POWER_LINK_CONTROLLER

2020-09-16T11:57:46Z

To keep it consistent with the other single line comments in the driver. Signed-off-by: Mika Westerberg

thunderbolt: Allow KUnit tests to be built also when CONFIG_USB4=m

2020-09-16T11:57:46Z

This adds a bit more build coverage for the tests even though these are not expected to be enabled by normal users and distros. In order to make this working we need to open-code kunit_test_suite() and call the relevant functions directly in the driver init/exit hook. Signed-off-by: Mika Westerberg

thunderbolt: Only stop control channel when entering freeze

2020-09-16T11:57:46Z

According to the kernel power management documentation freeze phase should only quiesce the device, no need to configure wakes or put it to low power state. For this reason we simply stop the control channel and in case of Software Connection Manager also mark the hotplug disabled. This should align the driver better with the PM framework expectations. Signed-off-by: Mika Westerberg

thunderbolt: Add debugfs interface

2020-09-03T09:21:08Z

This adds debugfs interface that can be used for debugging possible issues in hardware/software. It exposes router and adapter config spaces through files like this: /sys/kernel/debug/thunderbolt//regs /sys/kernel/debug/thunderbolt///regs /sys/kernel/debug/thunderbolt///path /sys/kernel/debug/thunderbolt///counters /sys/kernel/debug/thunderbolt///regs /sys/kernel/debug/thunderbolt///path /sys/kernel/debug/thunderbolt///counters ... The "regs" is either the router or port configuration space register dump. The "path" is the port path configuration space and "counters" is the optional counters configuration space. These files contains one register per line so it should be easy to use normal filtering tools to find the registers of interest if needed. The router and adapter regs file becomes writable when CONFIG_USB4_DEBUGFS_WRITE is enabled (which is not supposed to be done in production systems) and in this case the developer can write "offset value" lines there to modify the hardware directly. For convenience this also supports the long format the read side produces (but ignores the additional fields). The counters file can be written even when CONFIG_USB4_DEBUGFS_WRITE is not enabled and it is only used to clear the counter values. Signed-off-by: Gil Fine Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman

thunderbolt: Introduce tb_switch_is_tiger_lake()

2020-09-03T09:21:08Z

This is needed to differentiate Tiger Lake from other controllers. Signed-off-by: Gil Fine Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman

thunderbolt: Introduce tb_switch_is_ice_lake()

2020-09-03T09:21:08Z

This is needed to differentiate Ice Lake from other controllers. Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman

thunderbolt: Check for Intel vendor ID when identifying controller

2020-09-03T09:21:08Z

With USB4 there will be other vendors so make sure the current checks for different Intel controllers will not accidentally match those. Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman

thunderbolt: Introduce tb_port_is_nhi()

2020-09-03T09:21:08Z

This is useful if one needs to check if adapter (port) is the host interface (NHI). Make tb_port_alloc_hopid() take advantage of this. Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman

thunderbolt: Introduce tb_switch_next_cap()

2020-09-03T09:21:07Z

This is similar to tb_port_next_cap() but instead allows walking capability list of a switch (router). Convert tb_switch_find_cap() and tb_switch_find_vse_cap() to use this as well. Signed-off-by: Mika Westerberg Reviewed-by: Greg Kroah-Hartman