Commit Graph

698 Commits

Author SHA1 Message Date
Jakub Kicinski
0140a7168f Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/freescale/fec.h
  7b15515fc1 ("Revert "fec: Restart PPS after link state change"")
  40c79ce13b ("net: fec: add stop mode support for imx8 platform")
https://lore.kernel.org/all/20220921105337.62b41047@canb.auug.org.au/

drivers/pinctrl/pinctrl-ocelot.c
  c297561bc9 ("pinctrl: ocelot: Fix interrupt controller")
  181f604b33 ("pinctrl: ocelot: add ability to be used in a non-mmio configuration")
https://lore.kernel.org/all/20220921110032.7cd28114@canb.auug.org.au/

tools/testing/selftests/drivers/net/bonding/Makefile
  bbb774d921 ("net: Add tests for bonding and team address list management")
  152e8ec776 ("selftests/bonding: add a test for bonding lladdr target")
https://lore.kernel.org/all/20220921110437.5b7dbd82@canb.auug.org.au/

drivers/net/can/usb/gs_usb.c
  5440428b3d ("can: gs_usb: gs_can_open(): fix race dev->can.state condition")
  45dfa45f52 ("can: gs_usb: add RX and TX hardware timestamp support")
https://lore.kernel.org/all/84f45a7d-92b6-4dc5-d7a1-072152fab6ff@tessares.net/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-22 13:02:10 -07:00
Mario Limonciello
31f87f705b thunderbolt: Explicitly reset plug events delay back to USB4 spec value
If any software has interacted with the USB4 registers before the Linux
USB4 CM runs, it may have modified the plug events delay. It has been
observed that if this value too large, it's possible that hotplugged
devices will negotiate a fallback mode instead in Linux.

To prevent this, explicitly align the plug events delay with the USB4
spec value of 10ms.

Cc: stable@vger.kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-22 14:32:16 +03:00
Linus Torvalds
e35ff25f9f linux-kselftest-kunit-fixes-6.0-rc5
This KUnit fixes update for Linux 6.0-rc5 consists of 2 fixes to test
 build and a fix to incorrect taint reason reporting.
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Merge tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit fixes from Shuah Khan:
 "Two fixes to test build and a fix for incorrect taint reason reporting"

* tag 'linux-kselftest-kunit-fixes-6.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  tools: Add new "test" taint to kernel-chktaint
  kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves
  kunit: fix assert_type for comparison macros
2022-09-09 14:13:36 -04:00
Gil Fine
14c7d90528 thunderbolt: Add support for Intel Maple Ridge single port controller
Add support for Maple Ridge discrete USB4 host controller from Intel
which has a single USB4 port (versus the already supported dual port
Maple Ridge USB4 host controller).

Cc: stable@vger.kernel.org
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-09 08:45:57 +03:00
Paolo Abeni
9f8f1933dc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
drivers/net/ethernet/freescale/fec.h
  7d650df99d ("net: fec: add pm_qos support on imx6q platform")
  40c79ce13b ("net: fec: add stop mode support for imx8 platform")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2022-09-08 18:38:30 +02:00
Colin Ian King
706d738364 thunderbolt: debugfs: Fix spelling mistakes in seq_puts text
There are a handful of spelling mistakes in seq_puts text. Fix them.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:09:24 +03:00
Szuying Chen
a52958321b thunderbolt: Add support for ASMedia NVM image format
Add support for ASMedia specific NVM image format. This makes it
possible to upgrade the NVM firmware of ASMedia routers in addition to
Intel ones.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:51 +03:00
Szuying Chen
aef9c693e7 thunderbolt: Move vendor specific NVM handling into nvm.c
As there will be more USB4 devices that support NVM firmware upgrade from
various vendors, it makes sense to split out the Intel specific NVM
image handling from the generic code. This moves the Intel specific NVM
handling into a new structure that will be matched by the device type
and the vendor ID. Do this for both routers and retimers.

This makes it easier to extend the NVM support to cover new vendors and
NVM image formats in the future.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:51 +03:00
Mika Westerberg
8b02b2da77 thunderbolt: Provide tb_retimer_nvm_read() analogous to tb_switch_nvm_read()
As we are moving the NVM vendor specifics into nvm.c we need to deal
witht he retimer NVM formats too. For this reason provide retimer
specific function that can be used to read the contents of the NVM and
rename the internal ones accordingly analogous to what we do with
routers.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:51 +03:00
Szuying Chen
7bfafaa518 thunderbolt: Rename and make nvm_read() available for other files
In order to support non-Intel NVM formats the vendor specific NVM
validation code that will live in nvm.c needs to be able to read various
parts of the NVM so make the function available outside of switch.c and
rename it accordingly.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:51 +03:00
Szuying Chen
5424e1bf16 thunderbolt: Extend NVM version fields to 32-bits
In order to support non-Intel NVM image formats extend the NVM major and
minor version to 32-bits to better accommondate different versioning
schemes.

No functional impact.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:50 +03:00
Szuying Chen
5172eb9a16 thunderbolt: Allow NVM upgrade of USB4 host routers
Intel pre-USB4 host routers required the firmware connection manager to
be active in order to perform NVM firmware upgrade and for this reason
it was disabled when software connection manager is active. However,
this is not necessary for USB4 host routers as this functionality is
part of router operations that the router implements if it wants to
support this.

Signed-off-by: Szuying Chen <Chloe_Chen@asmedia.com.tw>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-07 09:06:50 +03:00
Mika Westerberg
d0f1e0c2a6 thunderbolt: Add support for receiver lane margining
USB4 spec defines standard set of registers to be used for receiver lane
margining. This is useful for I/O interface quality and electrical
robustness validation during manufacturing. Expose receiver lane
margining through new debugfs directory "margining" that is added under
each connected USB4 port. Users can then run the margining by writing to
the exposed attributes under that directory.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-05 09:02:16 +03:00
Mika Westerberg
b12d2955e7 thunderbolt: Add helper to check if CL states are enabled on port
We will need this when enabling lane margining support.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-05 09:02:16 +03:00
Mika Westerberg
3846d01140 thunderbolt: Pass CL state bitmask to tb_port_clx_supported()
Instead of testing just a single CL state we can pass a bitmask of
states to check. This makes it simpler for callers of the function.

We also add a check for CL2 even though not fully supported by the
driver yet.

Suggested-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-05 09:02:16 +03:00
Mika Westerberg
95f8f1cbc8 thunderbolt: Move port CL state functions into correct place in switch.c
They should be close to other functions dealing with USB4 ports. No
functional impact.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-05 09:02:16 +03:00
Mika Westerberg
7f333ace02 thunderbolt: Move tb_xdomain_parent() to tb.h
We are going to need this for lane margining support so make it
available outside of xdomain.c.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-09-05 09:02:16 +03:00
Nico Pache
793f55b297 kunit: fix Kconfig for build-in tests USB4 and Nitro Enclaves
Both the USB4 and Nitro Enclaves KUNIT tests are now able to be compiled
if KUNIT is compiled as a module. This leads to issues if KUNIT is being
packaged separately from the core kernel and when KUNIT is run baremetal
without the required driver compiled into the kernel.

Fixes: 635dcd1684 ("thunderbolt: test: Use kunit_test_suite() macro")
Fixes: fe5be808fa ("nitro_enclaves: test: Use kunit_test_suite() macro")
Signed-off-by: Nico Pache <npache@redhat.com>
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Andra Paraschiv <andraprs@amazon.com>
Acked-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-09-01 13:00:48 -06:00
Mika Westerberg
54669e2f17 thunderbolt: Add back Intel Falcon Ridge end-to-end flow control workaround
As we are now enabling full end-to-end flow control to the Thunderbolt
networking driver, in order for it to work properly on second generation
Thunderbolt hardware (Falcon Ridge), we need to add back the workaround
that was removed with commit 53f13319d1 ("thunderbolt: Get rid of E2E
workaround"). However, this time we only apply it for Falcon Ridge
controllers as a form of an additional quirk. For non-Falcon Ridge this
does nothing.

While there fix a typo 'reqister' -> 'register' in the comment.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-08-31 14:05:12 +01:00
Mika Westerberg
f9cad07b84 thunderbolt: Show link type for XDomain connections too
Following what we do for routers already, extend this to XDomain
connections as well. This will show in sysfs whether the link is in USB4
or Thunderbolt mode.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-08-31 14:05:12 +01:00
Rafael J. Wysocki
62fcb99bdf ACPI: Drop parent field from struct acpi_device
The parent field in struct acpi_device is, in fact, redundant,
because the dev.parent field in it effectively points to the same
object and it is used by the driver core.

Accordingly, the parent field can be dropped from struct acpi_device
and for this purpose define acpi_dev_parent() to retrieve a parent
struct acpi_device pointer from the dev.parent field in struct
acpi_device.  Next, update all of the users of the parent field
in struct acpi_device to use acpi_dev_parent() instead of it and
drop it.

While at it, drop the ACPI_IS_ROOT_DEVICE() macro that is only used
in one place in a confusing way.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
Reviewed-by: Punit Agrawal <punit.agrawal@bytedance.com>
2022-08-24 20:55:24 +02:00
Mika Westerberg
32249fd8c8 thunderbolt: Add support for Intel Meteor Lake
Intel Meteor Lake has the same integrated Thunderbolt/USB4 controller as
Intel Alder Lake. Add the Intel Meteor Lake PCI IDs to the driver list
of supported devices.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-08-22 12:21:33 +03:00
Mika Westerberg
1c1aac9862 thunderbolt: Add comment where Thunderbolt 4 PCI IDs start
This makes it consistent with the previous generations. No functional
impact.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-08-22 12:21:27 +03:00
Mika Westerberg
93a3c0d4e8 thunderbolt: Check router generation before connecting xHCI
Only Thunderbolt 3 routers need the xHCI connection flow. This also
ensures the router actually has both lane adapters (1 and 3). While
there move declaration of the boolean variables inside the block where
they are being used.

Fixes: 30a4eca69b ("thunderbolt: Add internal xHCI connect flows for Thunderbolt 3 devices")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-08-18 11:55:52 +03:00
Mika Westerberg
eb100b8fa8 thunderbolt: Use the actual buffer in tb_async_error()
The received notification packet is held in pkg->buffer and not in pkg
itself. Fix this by using the correct buffer.

Fixes: 81a54b5e19 ("thunderbolt: Let the connection manager handle all notifications")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-08-18 11:55:46 +03:00
Sanjay R Mehta
b60e31bf18 thunderbolt: Add DP OUT resource when DP tunnel is discovered
If the boot firmware implements a connection manager of its own it may
create a DisplayPort tunnel and will be handed off to Linux connection
manager, but the DP OUT resource is not saved in the dp_resource list.

This patch adds tunnelled DP OUT port to the dp_resource list once the
DP tunnel is discovered.

Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Tested-by: Renjith Pananchikkal <Renjith.Pananchikkal@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-08-15 12:38:31 +03:00
Linus Torvalds
9e2e5ea3b2 USB / Thunderbolt changes for 6.0-rc1
Here is the big set of Thunderbolt and USB changes for 6.0-rc1.
 
 Lots of little things here, nothing major, just constant development on
 some new hardware support and cleanups of older drivers.  Highlights of
 this pull request are:
 	- lots of typec changes and improvements for new hardware
 	- new gadget controller driver
 	- thunderbolt support for new hardware
 	- the normal set of new usb-serial device ids and cleanups
 	- loads of dwc3 controller fixes and improvements
 	- mtu3 driver updates
 	- testusb fixes for longtime issues (not many people use this
 	  tool it seems.)
 	- minor driver fixes and improvements over the USB tree
 	- chromeos platform driver changes were added and then reverted
 	  as they depened on some typec changes, but the cross-tree
 	  merges caused problems so they will come back later through
 	  the platform tree.
 
 All of these have been in linux-next for a while now with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of Thunderbolt and USB changes for 6.0-rc1.

  Lots of little things here, nothing major, just constant development
  on some new hardware support and cleanups of older drivers. Highlights
  are:

   - lots of typec changes and improvements for new hardware

   - new gadget controller driver

   - thunderbolt support for new hardware

   - the normal set of new usb-serial device ids and cleanups

   - loads of dwc3 controller fixes and improvements

   - mtu3 driver updates

   - testusb fixes for longtime issues (not many people use this tool it
     seems.)

   - minor driver fixes and improvements over the USB tree

   - chromeos platform driver changes were added and then reverted as
     they depened on some typec changes, but the cross-tree merges
     caused problems so they will come back later through the platform
     tree.

  All of these have been in linux-next for a while now with no reported
  issues"

* tag 'usb-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (193 commits)
  usb: misc: onboard_usb_hub: Remove duplicated power_on delay
  usb: misc: onboard_usb_hub: Add TI USB8041 hub support
  usb: misc: onboard_usb_hub: Add reset-gpio support
  USB: usbsevseg: convert sysfs snprintf to sysfs_emit
  dt-bindings: usb: Add binding for TI USB8041 hub controller
  ARM: multi_v7_defconfig: enable USB onboard HUB driver
  ARM: dts: stm32: add support for USB2514B onboard hub on stm32mp15xx-dkx
  usb: misc: onboard-hub: add support for Microchip USB2514B USB 2.0 hub
  dt-bindings: usb: generic-ehci: allow usb-hcd schema properties
  usb: typec: ucsi: stm32g0: add bootloader support
  usb: typec: ucsi: stm32g0: add support for stm32g0 controller
  dt-bindings: usb: typec: add bindings for stm32g0 controller
  usb: typec: ucsi: Acknowledge the GET_ERROR_STATUS command completion
  usb: cdns3: change place of 'priv_ep' assignment in cdns3_gadget_ep_dequeue(), cdns3_gadget_ep_enable()
  usb/chipidea: fix repeated words in comments
  usb: renesas-xhci: Do not print any log while fw verif success
  usb: typec: retimer: Add missing id check in match callback
  USB: xhci: Fix comment typo
  usb/typec/tcpm: fix repeated words in comments
  usb/musb: fix repeated words in comments
  ...
2022-08-04 11:41:28 -07:00
Linus Torvalds
665fe72a7d linux-kselftest-kunit-5.20-rc1
This KUnit update for Linux 5.20-rc1 consists of several fixes and an
 important feature to discourage running KUnit tests on production
 systems. Running tests on a production system could leave the system
 in a bad state. This new feature adds:
 
 - adds a new taint type, TAINT_TEST to signal that a test has been run.
   This should discourage people from running these tests on production
   systems, and to make it easier to tell if tests have been run
   accidentally (by loading the wrong configuration, etc.)
 
 - several documentation and tool enhancements and fixes.
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Merge tag 'linux-kselftest-kunit-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit updates from Shuah Khan:
 "This consists of several fixes and an important feature to discourage
  running KUnit tests on production systems. Running tests on a
  production system could leave the system in a bad state.

  Summary:

   - Add a new taint type, TAINT_TEST to signal that a test has been
     run.

     This should discourage people from running these tests on
     production systems, and to make it easier to tell if tests have
     been run accidentally (by loading the wrong configuration, etc)

   - Several documentation and tool enhancements and fixes"

* tag 'linux-kselftest-kunit-5.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (29 commits)
  Documentation: KUnit: Fix example with compilation error
  Documentation: kunit: Add CLI args for kunit_tool
  kcsan: test: Add a .kunitconfig to run KCSAN tests
  kunit: executor: Fix a memory leak on failure in kunit_filter_tests
  clk: explicitly disable CONFIG_UML_PCI_OVER_VIRTIO in .kunitconfig
  mmc: sdhci-of-aspeed: test: Use kunit_test_suite() macro
  nitro_enclaves: test: Use kunit_test_suite() macro
  thunderbolt: test: Use kunit_test_suite() macro
  kunit: flatten kunit_suite*** to kunit_suite** in .kunit_test_suites
  kunit: unify module and builtin suite definitions
  selftest: Taint kernel when test module loaded
  module: panic: Taint the kernel when selftest modules load
  Documentation: kunit: fix example run_kunit func to allow spaces in args
  Documentation: kunit: Cleanup run_wrapper, fix x-ref
  kunit: test.h: fix a kernel-doc markup
  kunit: tool: Enable virtio/PCI by default on UML
  kunit: tool: make --kunitconfig repeatable, blindly concat
  kunit: add coverage_uml.config to enable GCOV on UML
  kunit: tool: refactor internal kconfig handling, allow overriding
  kunit: tool: introduce --qemu_args
  ...
2022-08-02 19:34:45 -07:00
David Gow
635dcd1684 thunderbolt: test: Use kunit_test_suite() macro
The new implementation of kunit_test_suite() for modules no longer
conflicts with module_init, so can now be used by the thunderbolt tests.

Also update the Kconfig entry to enable the test when KUNIT_ALL_TESTS is
enabled.

This means that kunit_tool can now successfully run and parse the test
results with, for example:
	./tools/testing/kunit/kunit.py run --arch=x86_64 \
	--kconfig_add CONFIG_PCI=y --kconfig_add CONFIG_USB4=y \
	'thunderbolt'

Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Daniel Latypov <dlatypov@google.com>
Acked-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-07-11 17:13:21 -06:00
Rafael J. Wysocki
a73a204b44 thunderbolt: ACPI: Replace tb_acpi_find_port() with acpi_find_child_by_adr()
Use acpi_find_child_by_adr() to find the child matching a given bus
address instead of tb_acpi_find_port() that walks the list of children
of an ACPI device directly for this purpose and drop the latter.

Apart from simplifying the code, this will help to eliminate the
children list head from struct acpi_device as it is redundant and it
is used in questionable ways in some places (in particular, locking is
needed for walking the list pointed to it safely, but it is often
missing).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
2022-06-20 20:32:26 +02:00
Xiang Wangx
34b9715b7c thunderbolt: Fix typo in comment
Delete the redundant word 'the'.

Signed-off-by: Xiang Wangx <wangxiang@cdjrlc.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-17 18:19:15 +03:00
George D Sworo
7ec58378a9 thunderbolt: Add support for Intel Raptor Lake
Intel Raptor Lake has the same integrated Thunderbolt/USB4 controller as
Intel Alder Lake. By default it is still using firmware based connection
manager so we can use most of the Alder Lake flows.

Signed-off-by: George D Sworo <george.d.sworo@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:33:22 +03:00
Yang Li
e173b7d46c thunderbolt: Fix some kernel-doc comments
Remove some warnings found by running scripts/kernel-doc,
which is caused by using 'make W=1'.

  drivers/thunderbolt/ctl.c:701: warning: expecting prototype for tb_cfg_start().
    Prototype was for tb_ctl_start() instead
  drivers/thunderbolt/ctl.c:722: warning: expecting prototype for tb_ctrl_stop().
    Prototype was for tb_ctl_stop() instead
  drivers/thunderbolt/ctl.c:930: warning: expecting prototype for tb_cfg_write().
    Prototype was for tb_cfg_write_raw() instead

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:28:56 +03:00
Gil Fine
3084b48fa1 thunderbolt: Change TMU mode to HiFi uni-directional once DisplayPort tunneled
Here we configure TMU mode to HiFi uni-directional once DP tunnel
is created. This is due to accuracy requirement for DP tunneling
as appears in CM guide 1.0, section 7.3.2.
Due to Intel hardware limitation, once we changed the TMU mode to HiFi
uni-directional (when DP tunnel exists), we don't change TMU mode back to
normal uni-directional, even if DP tunnel is torn down later.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:24:56 +03:00
Gil Fine
b017a46d48 thunderbolt: Add CL1 support for USB4 and Titan Ridge routers
In this patch we add support for a second low power state of the link: CL1.
Low power states (called collectively CLx) are used to reduce
transmitter and receiver power when a high-speed lane is idle.
We enable it, if both sides of the link support it,
and only for the first hop router (i.e. the first device that connected
to the host router). This is needed for better thermal management.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:24:56 +03:00
Gil Fine
5fd6b9a5cb thunderbolt: Change downstream router's TMU rate in both TMU uni/bidir mode
In case of uni-directional time sync, TMU handshake is
initiated by upstream router. In case of bi-directional
time sync, TMU handshake is initiated by downstream router.
In order to handle correctly the case of uni-directional mode,
we avoid changing the upstream router's rate to off,
because it might have another downstream router plugged that is set to
uni-directional mode (and we don't want to change its mode).
Instead, we always change downstream router's rate.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:19:23 +03:00
Gil Fine
b4e08d5d08 thunderbolt: Fix typos in CLx enabling
Fix few typos in CLx enabling.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:19:23 +03:00
Gil Fine
418a5a3d65 thunderbolt: CLx disable before system suspend only if previously enabled
Disable CLx before system suspended only if previously was enabled.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:19:23 +03:00
Gil Fine
990f4b85d7 thunderbolt: Silently ignore CLx enabling in case CLx is not supported
We can't enable CLx if it is not supported either by the host or device,
or by the USB4/TBT link (e.g. when an optical cable is used).
We silently ignore CLx enabling in this case.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-06-06 12:19:22 +03:00
Linus Torvalds
54c2cc7919 USB / Thunderbolt changes for 5.19-rc1
Here is the "big" set of USB and Thunderbolt driver changes for
 5.18-rc1.  For the most part it's been a quiet development cycle for the
 USB core, but there are the usual "hot spots" of development activity.
 
 Included in here are:
 	- Thunderbolt driver updates:
 		- fixes for devices without displayport adapters
 		- lane bonding support and improvements
 		- other minor changes based on device testing
 	- dwc3 gadget driver changes.  It seems this driver will never
 	  be finished given that the IP core is showing up in zillions
 	  of new devices and each implementation decides to do something
 	  different with it...
 	- uvc gadget driver updates as more devices start to use and
 	  rely on this hardware as well
 	- usb_maxpacket() api changes to remove an unneeded and unused
 	  parameter.
 	- usb-serial driver device id updates and small cleanups
 	- typec cleanups and fixes based on device testing
 	- device tree updates for usb properties
 	- lots of other small fixes and driver updates.
 
 All of these have been in linux-next for weeks with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the "big" set of USB and Thunderbolt driver changes for
  5.18-rc1. For the most part it's been a quiet development cycle for
  the USB core, but there are the usual "hot spots" of development
  activity.

  Included in here are:

   - Thunderbolt driver updates:
       - fixes for devices without displayport adapters
       - lane bonding support and improvements
       - other minor changes based on device testing

   - dwc3 gadget driver changes.

     It seems this driver will never be finished given that the IP core
     is showing up in zillions of new devices and each implementation
     decides to do something different with it...

   - uvc gadget driver updates as more devices start to use and rely on
     this hardware as well

   - usb_maxpacket() api changes to remove an unneeded and unused
     parameter.

   - usb-serial driver device id updates and small cleanups

   - typec cleanups and fixes based on device testing

   - device tree updates for usb properties

   - lots of other small fixes and driver updates.

  All of these have been in linux-next for weeks with no reported
  problems"

* tag 'usb-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (154 commits)
  USB: new quirk for Dell Gen 2 devices
  usb: dwc3: core: Add error log when core soft reset failed
  usb: dwc3: gadget: Move null pinter check to proper place
  usb: hub: Simplify error and success path in port_over_current_notify
  usb: cdns3: allocate TX FIFO size according to composite EP number
  usb: dwc3: Fix ep0 handling when getting reset while doing control transfer
  usb: Probe EHCI, OHCI controllers asynchronously
  usb: isp1760: Fix out-of-bounds array access
  xhci: Don't defer primary roothub registration if there is only one roothub
  USB: serial: option: add Quectel BG95 modem
  USB: serial: pl2303: fix type detection for odd device
  xhci: Allow host runtime PM as default for Intel Alder Lake N xHCI
  xhci: Remove quirk for over 10 year old evaluation hardware
  xhci: prevent U2 link power state if Intel tier policy prevented U1
  xhci: use generic command timer for stop endpoint commands.
  usb: host: xhci-plat: omit shared hcd if either root hub has no ports
  usb: host: xhci-plat: prepare operation w/o shared hcd
  usb: host: xhci-plat: create shared hcd after having added main hcd
  xhci: prepare for operation w/o shared hcd
  xhci: factor out parts of xhci_gen_setup()
  ...
2022-06-03 11:17:49 -07:00
Linus Torvalds
e1cbc3b96a IOMMU Updates for Linux v5.19
Including:
 
 	- Intel VT-d driver updates
 	  - Domain force snooping improvement.
 	  - Cleanups, no intentional functional changes.
 
 	- ARM SMMU driver updates
 	  - Add new Qualcomm device-tree compatible strings
 	  - Add new Nvidia device-tree compatible string for Tegra234
 	  - Fix UAF in SMMUv3 shared virtual addressing code
 	  - Force identity-mapped domains for users of ye olde SMMU
 	    legacy binding
 	  - Minor cleanups
 
 	- Patches to fix a BUG_ON in the vfio_iommu_group_notifier
 	  - Groundwork for upcoming iommufd framework
 	  - Introduction of DMA ownership so that an entire IOMMU group
 	    is either controlled by the kernel or by user-space
 
 	- MT8195 and MT8186 support in the Mediatek IOMMU driver
 
 	- Patches to make forcing of cache-coherent DMA more coherent
 	  between IOMMU drivers
 
 	- Fixes for thunderbolt device DMA protection
 
 	- Various smaller fixes and cleanups
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Merge tag 'iommu-updates-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu updates from Joerg Roedel:

 - Intel VT-d driver updates:
     - Domain force snooping improvement.
     - Cleanups, no intentional functional changes.

 - ARM SMMU driver updates:
     - Add new Qualcomm device-tree compatible strings
     - Add new Nvidia device-tree compatible string for Tegra234
     - Fix UAF in SMMUv3 shared virtual addressing code
     - Force identity-mapped domains for users of ye olde SMMU legacy
       binding
     - Minor cleanups

 - Fix a BUG_ON in the vfio_iommu_group_notifier:
     - Groundwork for upcoming iommufd framework
     - Introduction of DMA ownership so that an entire IOMMU group is
       either controlled by the kernel or by user-space

 - MT8195 and MT8186 support in the Mediatek IOMMU driver

 - Make forcing of cache-coherent DMA more coherent between IOMMU
   drivers

 - Fixes for thunderbolt device DMA protection

 - Various smaller fixes and cleanups

* tag 'iommu-updates-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (88 commits)
  iommu/amd: Increase timeout waiting for GA log enablement
  iommu/s390: Tolerate repeat attach_dev calls
  iommu/vt-d: Remove hard coding PGSNP bit in PASID entries
  iommu/vt-d: Remove domain_update_iommu_snooping()
  iommu/vt-d: Check domain force_snooping against attached devices
  iommu/vt-d: Block force-snoop domain attaching if no SC support
  iommu/vt-d: Size Page Request Queue to avoid overflow condition
  iommu/vt-d: Fold dmar_insert_one_dev_info() into its caller
  iommu/vt-d: Change return type of dmar_insert_one_dev_info()
  iommu/vt-d: Remove unneeded validity check on dev
  iommu/dma: Explicitly sort PCI DMA windows
  iommu/dma: Fix iova map result check bug
  iommu/mediatek: Fix NULL pointer dereference when printing dev_name
  iommu: iommu_group_claim_dma_owner() must always assign a domain
  iommu/arm-smmu: Force identity domains for legacy binding
  iommu/arm-smmu: Support Tegra234 SMMU
  dt-bindings: arm-smmu: Add compatible for Tegra234 SOC
  dt-bindings: arm-smmu: Document nvidia,memory-controller property
  iommu/arm-smmu-qcom: Add SC8280XP support
  dt-bindings: arm-smmu: Add compatible for Qualcomm SC8280XP
  ...
2022-05-31 09:56:54 -07:00
Gil Fine
c7c99a09ef thunderbolt: Add KUnit test for devices with no DisplayPort adapters
Add a KUnit test to check that buffer allocation works also for devices
with no DP adapters.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-12 09:22:36 +03:00
Gil Fine
93bf344f66 thunderbolt: Fix buffer allocation of devices with no DisplayPort adapters
For the case of a device without DisplayPort adapters we calculate
incorrectly the amount of buffers. Fix the calculation for this case.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-12 09:22:11 +03:00
Mika Westerberg
8e1de70425 thunderbolt: Add support for XDomain lane bonding
The USB4 Inter-Domain Service specification defines a protocol that can
be used to establish lane bonding between two USB4 domains (hosts). So
far we have not implemented it because the host controller DMA was not
fast enough to be able to go over 20 Gbits/s even if lanes were bonded.
However, starting from Intel Alder Lake CPUs the DMA can go over
20 Gbits/s so now it makes more sense to add this support to the driver.

Because both ends need to negotiate the bonding we add a simple state
machine that tracks the connection state and does the necessary steps
described by the USB4 Inter-Domain Service specification. We only
establish lane bonding when both sides of the link support it. Otherwise
we default to use the single lane. Also this is only done when software
connection manager is used. On systems with firmware based connection
manager, it handles the high-speed tunneling so bonding lanes is
specific to the implementation (Intel firmware based connection manager
does not support lane bonding).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:25:23 +03:00
Mika Westerberg
0a2e1667a7 thunderbolt: Ignore port locked error in tb_port_wait_for_link_width()
Sometimes when polling for the port after target link width is changed
we get back port locked notification (because the link actually was
reset and then re-trained). Instead of bailing out we can ignore these
when polling for the width change as this is expected.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:25:16 +03:00
Mika Westerberg
0e14dd5e14 thunderbolt: Split setting link width and lane bonding into own functions
When bonding lanes over XDomain the host that has "higher" UUID triggers
link re-train for bonding, and the host that has "lower" UUID just waits
for this to happen. To support this split setting the link width and
triggering the actual bonding a separate functions that can be called as
needed.

While there remove duplicated empty line in the kernel-doc comment of
tb_port_lane_bonding_disable().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:25:04 +03:00
Mika Westerberg
94581b25d8 thunderbolt: Move tb_port_state() prototype to correct place
This should be before tb_wait_for_port() following how the functions in
switch.c are organized.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:24:55 +03:00
Mika Westerberg
90f720d229 thunderbolt: Add debug logging when lane is enabled/disabled
This is useful when debugging possible issues.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-05-05 09:24:49 +03:00
Heikki Krogerus
5dddb41692 thunderbolt: Link USB4 ports to their USB Type-C connectors
Creating a symlink pointing to the correct USB Type-C
connector for the on-board USB4 ports when they are created.
The link will be created only if the firmware is able to
describe the connection between the port and its connector.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Won Chung <wonchung@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-04-29 12:17:48 +03:00
Robin Murphy
86eaf4a5b4 thunderbolt: Make iommu_dma_protection more accurate
Between me trying to get rid of iommu_present() and Mario wanting to
support the AMD equivalent of DMAR_PLATFORM_OPT_IN, scrutiny has shown
that the iommu_dma_protection attribute is being far too optimistic.
Even if an IOMMU might be present for some PCI segment in the system,
that doesn't necessarily mean it provides translation for the device(s)
we care about. Furthermore, all that DMAR_PLATFORM_OPT_IN really does
is tell us that memory was protected before the kernel was loaded, and
prevent the user from disabling the intel-iommu driver entirely. While
that lets us assume kernel integrity, what matters for actual runtime
DMA protection is whether we trust individual devices, based on the
"external facing" property that we expect firmware to describe for
Thunderbolt ports.

It's proven challenging to determine the appropriate ports accurately
given the variety of possible topologies, so while still not getting a
perfect answer, by putting enough faith in firmware we can at least get
a good bit closer. If we can see that any device near a Thunderbolt NHI
has all the requisites for Kernel DMA Protection, chances are that it
*is* a relevant port, but moreover that implies that firmware is playing
the game overall, so we'll use that to assume that all Thunderbolt ports
should be correctly marked and thus will end up fully protected.

CC: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/b153f208bc9eafab5105bad0358b77366509d2d4.1650878781.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2022-04-28 10:30:25 +02:00
Mika Westerberg
9d2d0a5cf0 thunderbolt: Use different lane for second DisplayPort tunnel
Brad reported that on Apple hardware with Light Ridge or Falcon Ridge
controller, plugging in a chain of Thunderbolt displays (Light Ridge
based controllers) causes all kinds of tearing and flickering. The
reason for this is that on Thunderbolt 1 hardware there is no lane
bonding so we have two independent 10 Gb/s lanes, and currently Linux
tunnels both displays through the lane 1. This makes the displays to
share the 10 Gb/s bandwidth which may not be enough for higher
resolutions.

For this reason make the second tunnel go through the lane 0 instead.
This seems to match what the macOS connection manager is also doing.

Reported-by: Brad Campbell <lists2009@fnarfbargle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Brad Campbell <lists2009@fnarfbargle.com>
2022-04-19 10:26:18 +03:00
Mika Westerberg
259e0c71e5 thunderbolt: Dump path config space entries during discovery
This is useful when debugging possible issues during tunnel discovery.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Brad Campbell <lists2009@fnarfbargle.com>
2022-04-19 10:26:13 +03:00
Mika Westerberg
ebe99c0f29 thunderbolt: Use decimal number with port numbers
This makes it consistent with the other logging functions.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Brad Campbell <lists2009@fnarfbargle.com>
2022-04-19 10:26:07 +03:00
Mika Westerberg
ca319f5565 thunderbolt: Fix typo in comment
Should be 'in' instead of 'bin'. Fix it.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Brad Campbell <lists2009@fnarfbargle.com>
2022-04-19 10:26:00 +03:00
Ricardo Ribalda
7aadf84333 thunderbolt: test: use NULL macros
Replace the NULL checks with the more specific and idiomatic NULL macros.

Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Daniel Latypov <dlatypov@google.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Acked-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2022-04-04 14:29:13 -06:00
Jakob Koschel
03941ed91c thunderbolt: Replace usage of found with dedicated list iterator variable
To move the list iterator variable into the list_for_each_entry_*()
macro in the future it should be avoided to use the list iterator
variable after the loop body.

To *never* use the list iterator variable after the loop it was
concluded to use a separate iterator variable instead of a
found boolean [1].

This removes the need to use a found variable and simply checking if
the variable was set, can determine if the break/goto was hit.

Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/
Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-04-04 12:31:50 +03:00
Linus Torvalds
02e2af20f4 Char/Misc and other driver updates for 5.18-rc1
Here is the big set of char/misc and other small driver subsystem
 updates for 5.18-rc1.
 
 Included in here are merges from driver subsystems which contain:
 	- iio driver updates and new drivers
 	- fsi driver updates
 	- fpga driver updates
 	- habanalabs driver updates and support for new hardware
 	- soundwire driver updates and new drivers
 	- phy driver updates and new drivers
 	- coresight driver updates
 	- icc driver updates
 
 Individual changes include:
 	- mei driver updates
 	- interconnect driver updates
 	- new PECI driver subsystem added
 	- vmci driver updates
 	- lots of tiny misc/char driver updates
 
 There will be two merge conflicts with your tree, one in MAINTAINERS
 which is obvious to fix up, and one in drivers/phy/freescale/Kconfig
 which also should be easy to resolve.
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the big set of char/misc and other small driver subsystem
  updates for 5.18-rc1.

  Included in here are merges from driver subsystems which contain:

   - iio driver updates and new drivers

   - fsi driver updates

   - fpga driver updates

   - habanalabs driver updates and support for new hardware

   - soundwire driver updates and new drivers

   - phy driver updates and new drivers

   - coresight driver updates

   - icc driver updates

  Individual changes include:

   - mei driver updates

   - interconnect driver updates

   - new PECI driver subsystem added

   - vmci driver updates

   - lots of tiny misc/char driver updates

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (556 commits)
  firmware: google: Properly state IOMEM dependency
  kgdbts: fix return value of __setup handler
  firmware: sysfb: fix platform-device leak in error path
  firmware: stratix10-svc: add missing callback parameter on RSU
  arm64: dts: qcom: add non-secure domain property to fastrpc nodes
  misc: fastrpc: Add dma handle implementation
  misc: fastrpc: Add fdlist implementation
  misc: fastrpc: Add helper function to get list and page
  misc: fastrpc: Add support to secure memory map
  dt-bindings: misc: add fastrpc domain vmid property
  misc: fastrpc: check before loading process to the DSP
  misc: fastrpc: add secure domain support
  dt-bindings: misc: add property to support non-secure DSP
  misc: fastrpc: Add support to get DSP capabilities
  misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
  misc: fastrpc: separate fastrpc device from channel context
  dt-bindings: nvmem: brcm,nvram: add basic NVMEM cells
  dt-bindings: nvmem: make "reg" property optional
  nvmem: brcm_nvram: parse NVRAM content into NVMEM cells
  nvmem: dt-bindings: Fix the error of dt-bindings check
  ...
2022-03-28 12:27:35 -07:00
Mario Limonciello
144c4a77a3 thunderbolt: Rename EEPROM handling bits to match USB4 spec
The structure `tb_eeprom_ctl` is used to show the bits accessed when
reading/writing EEPROM.

As this structure is specified in the USB4 spec as `VSC_CS_4` update
the names and use of members to match the specification. This should not
change anything functionally.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-03-04 17:10:36 +03:00
Mario Limonciello
51d4d64c7c thunderbolt: Clarify register definitions for tb_cap_plug_events
The USB4 1.0 specification outlines the `cap_plug_events` structure as
`VSC_CS_1`.  This shows that 4 bits of `VSC_CS_1` are TBT3 compatible in
USB4, but TBT3 controllers also support disabling XHCI.

Update the names and comments to more closely match the specification.
This should not change anything functionally.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-03-04 17:10:36 +03:00
Mario Limonciello
6915812bbd thunderbolt: Do not make DROM read success compulsory
The USB4 specification doesn't make any requirements that reading
a device router's DROM is needed for the operation of the device.

Other connection manager solutions don't necessarily read it or gate
the usability of the device on whether it was read.

So make failures when reading the DROM show warnings but not
fail the initialization of the router.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-03-04 17:10:36 +03:00
Mario Limonciello
a283de3ec6 thunderbolt: Do not resume routers if UID is not set
Routers might not have a UID set if the DROM read failed during
initialization previously.

Normally upon resume the UID is re-read to confirm it's the same
device connected.
* If the DROM read failed during init but then succeeded during
  resume it could either be a new device or faulty device
* If the DROM read failed during init and also failed during resume
  it might be a different device plugged in all together.

Detect this situation and prevent re-using the same configuration in
these cirucmstances.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-03-04 17:10:36 +03:00
Mario Limonciello
e87491a9fd thunderbolt: Retry DROM reads for more failure scenarios
Currently DROM reads are only retried in the case that parsing failed.
However if the size or CRC fails, then there should also be a retry.

This helps with reading the DROM on TBT3 devices connected to AMD
Yellow Carp which will sometimes fail on the first attempt.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-03-04 17:10:36 +03:00
Andy Shevchenko
4c49300d8e thunderbolt: Drop duplicate NULL checks around nvmem_unregister()
Since nvmem_unregister() checks for NULL, no need to repeat in
the caller. Drop duplicate NULL checks.

Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220220151527.17216-14-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-21 18:00:30 +01:00
Rafael J. Wysocki
7f7b571bec thunderbolt: Replace acpi_bus_get_device()
Replace acpi_bus_get_device() that is going to be dropped with
acpi_fetch_acpi_dev().

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-02-02 17:06:10 +03:00
Mika Westerberg
30a4eca69b thunderbolt: Add internal xHCI connect flows for Thunderbolt 3 devices
Both Alpine Ridge and Titan Ridge require special flows in order to
activate the internal xHCI controller when there is USB device connected
to the downstream type-C port. This implements the missing flows for
both.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-02-02 13:56:51 +03:00
Mika Westerberg
f1d5ec3e0e thunderbolt: Add missing device ID to tb_switch_is_alpine_ridge()
tb_switch_is_alpine_ridge() is missing device ID for Intel Alpine Ridge
dual port version so add this.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-02-02 13:56:45 +03:00
Mika Westerberg
3eddfc121f thunderbolt: Disable LTTPR on Intel Titan Ridge
Intel Titan Ridge does not disable AUX timers when it gets SET_CONFIG
with SET_LTTPR_MODE set which makes DP tunneling to fail. For this
reason disable LTTPR on Titan Ridge device side.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-02-02 13:56:38 +03:00
Christophe JAILLET
97486e981f thunderbolt: Remove useless DMA-32 fallback configuration
As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.

Simplify code and remove some dead code accordingly.

While at it, include directly <linux/dma-mapping.h> instead on relying on
indirect inclusion.

[1]: https://lkml.org/lkml/2021/6/7/398

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2022-01-24 16:55:56 +03:00
Gil Fine
fa487b2a90 thunderbolt: Add module parameter for CLx disabling
Add a module parameter that allows user to completely disable CLx
functionality in case problems are found.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-28 10:43:56 +03:00
Gil Fine
43f977bc60 thunderbolt: Enable CL0s for Intel Titan Ridge
Low power link states (called collectively CLx) are used to reduce
transmitter and receiver power when a high-speed lane is idle. The
simplest one being called CL0s. Follow what we already do for USB4
device routers and enable CL0s for Intel Titan Ridge device router too.
This allows better thermal management.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-28 10:43:56 +03:00
Gil Fine
483c9d8275 thunderbolt: Rename Intel TB_VSE_CAP_IECS capability
Rename the VSC capability: TB_VSE_CAP_IECS to TB_VSE_CAP_CP_LP to follow
the Intel devices namings as appear in the datasheet. This capability
is used for controlling CLx (Low Power states of the link).

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-22 17:13:14 +03:00
Gil Fine
23ccd21ccb thunderbolt: Implement TMU time disruption for Intel Titan Ridge
Intel Titan Ridge based routers have slightly different flow for time
disruption than USB4 compliant routers. This makes it work on Titan
Ridge too. Needed to enable link low power states on Titan Ridge.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-22 17:13:14 +03:00
Gil Fine
1639664fb7 thunderbolt: Move usb4_switch_wait_for_bit() to switch.c
Currently usb4_switch_wait_for_bit() used only in usb4.c Moving to
switch.c to call it from other files. Also change the prefix to "tb_"
to follow to the naming convention.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-22 17:13:14 +03:00
Gil Fine
8a90e4fa3b thunderbolt: Add CL0s support for USB4 routers
In this patch we add enabling of CL0s - a low power state of the link.
Low power states (called collectively CLx) are used to reduce
transmitter and receiver power when a high-speed lane is idle. For now,
we add support only for first low power state: CL0s.  We enable it, if
both sides of the link support it, and only for the first hop router.
(i.e. the first device that connected to the host router). This is
needed for better thermal management.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-22 17:13:14 +03:00
Gil Fine
a28ec0e165 thunderbolt: Add TMU uni-directional mode
Up until Titan Ridge (Thunderbolt 3) device routers only supported
bi-directional mode. In this patch we add to TMU a uni-directional mode.
The uni-directional mode is needed for enabling of low power state of
the link (CLx).

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-22 17:13:14 +03:00
Xiaoke Wang
3cc1c6de45 thunderbolt: Check return value of kmemdup() in icm_handle_event()
kmemdup() may return NULL if there is not enough memory available. Check
this and bail out early in this case. While there move INIT_WORK() to
happen after we have allocated all the memory needed for the event
handling to avoid doing unnecessary work.

Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-15 13:39:08 +03:00
Andy Shevchenko
fea783e6e8 thunderbolt: Do not dereference fwnode in struct device
In order to make the underneath API easier to change in the future,
prevent users from dereferencing fwnode from struct device.
Instead, use the specific dev_fwnode() API for that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-08 13:22:05 +03:00
Mika Westerberg
ce05b99742 thunderbolt: Add debug logging of DisplayPort resource allocation
Add more debugging around DP resource allocation/de-allocation.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:18:34 +03:00
Mika Westerberg
e5bb88e961 thunderbolt: Do not program path HopIDs for USB4 routers
These fields are marked read-only for USB4 routers so do not touch them
in that case. Update the kernel-doc of tb_dp_port_set_hops() to reflect
this too.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:18:33 +03:00
Mika Westerberg
6cb27a04fb thunderbolt: Do not allow subtracting more NFC credits than configured
This might happen if the boot firmware uses different amount of NFC
credits than what the router suggests, or we are dealing with pre-USB4
device.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:18:33 +03:00
Mika Westerberg
1e56c88ade thunderbolt: Runtime resume USB4 port when retimers are scanned
Sometimes when plugging in a USB4 device we might see following error:

  thunderbolt 1-0:3.1: runtime PM trying to activate child device 1-0:3.1 but parent (usb4_port3) is not active

This happens because the parent USB4 port was still runtime suspended.
Fix this by runtime resuming the USB4 port before scanning the retimers
below it.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:18:33 +03:00
Mika Westerberg
43bddb26e2 thunderbolt: Tear down existing tunnels when resuming from hibernate
If the boot firmware implements connection manager of its own it may not
create the paths in the same way or order we do. For example it may
create first PCIe tunnel and then USB3 tunnel. When we restore our
tunnels (first de-activating them) we may be doing that over completely
different tunnels and that leaves them possibly non-functional. For this
reason we re-use the tunnel discovery functionality and find out all the
existing tunnels, and tear them down. Once that is done we can restore
our tunnels.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:18:33 +03:00
Mika Westerberg
f3380cac0c thunderbolt: Runtime PM activate both ends of the device link
If protocol tunnels are already up when the driver is loaded, for
instance if the boot firmware implements connection manager of its own,
runtime PM reference count of the consumer devices behind the tunnel
might have been increased already before the device link is created but
the supplier device runtime PM reference count is not. This leads to a
situation where the supplier (the Thunderbolt driver) can runtime
suspend even if it should not because the corresponding protocol tunnel
needs to be up causing the devices to be removed from the corresponding
native bus.

Prevent this from happening by making both sides of the link runtime PM
active briefly. The pm_runtime_put() for the consumer (PCIe
root/downstream port, xHCI) then allows it to runtime suspend again but
keeps the supplier runtime resumed the whole time it is runtime active.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-12-07 15:18:33 +03:00
Kees Cook
1981355170 thunderbolt: xdomain: Avoid potential stack OOB read
tb_xdp_properties_changed_request() was calling tb_xdp_handle_error() with
a struct tb_xdp_properties_changed_response on the stack, which does not
have the "error" field present when cast to struct tb_xdp_error_response.
This was detected when building with -Warray-bounds:

drivers/thunderbolt/xdomain.c: In function 'tb_xdomain_properties_changed':
drivers/thunderbolt/xdomain.c:226:22: error: array subscript 'const struct tb_xdp_error_response[0]' is partly outside array bounds of 'struct tb_xdp_properties_changed_response[1]' [-Werror=array-bounds]
  226 |         switch (error->error) {
      |                 ~~~~~^~~~~~~
drivers/thunderbolt/xdomain.c:448:51: note: while referencing 'res'
  448 |         struct tb_xdp_properties_changed_response res;
      |                                                   ^~~

Add union containing struct tb_xdp_error_response to structures passed
to tb_xdp_handle_error(), so that the "error" field will be present.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-12-07 15:05:44 +03:00
Greg Kroah-Hartman
e8d6336d9d thunderbolt: Changes for v5.16 merge window
This includes following Thunderbolt/USB4 changes for the v5.16 merge
 window:
 
   * Re-enable retry logic for control packets in domain needed by some
     controllers when software connection manager is being used
   * Fix -Wrestrict build warning emitted by gcc-11.
 
 Both have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.16 merge window

This includes following Thunderbolt/USB4 changes for the v5.16 merge
window:

  * Re-enable retry logic for control packets in domain needed by some
    controllers when software connection manager is being used
  * Fix -Wrestrict build warning emitted by gcc-11.

Both have been in linux-next with no reported issues.

* tag 'thunderbolt-for-v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Fix -Wrestrict warning
  thunderbolt: Enable retry logic for intra-domain control packets
2021-10-25 13:17:29 +02:00
Brendan Higgins
33d4951e02 thunderbolt: build kunit tests without structleak plugin
The structleak plugin causes the stack frame size to grow immensely when
used with KUnit:

drivers/thunderbolt/test.c:1529:1: error: the frame size of 1176 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]

Turn it off in this file.

Linus already split up tests in this file, so this change *should* be
redundant now.

Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-10-06 17:53:49 -06:00
Arnd Bergmann
0a0624a26f thunderbolt: Fix -Wrestrict warning
gcc-11 warns when building with W=1:

drivers/thunderbolt/xdomain.c: In function 'modalias_show':
drivers/thunderbolt/xdomain.c:733:16: error: 'sprintf' argument 3 overlaps destination object 'buf' [-Werror=restrict]
  733 |         return sprintf(buf, "%s\n", buf);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/thunderbolt/xdomain.c:727:36: note: destination object referenced by 'restrict'-qualified argument 1 was declared here
  727 |                              char *buf)
      |                              ~~~~~~^~~

There is no need for the sprintf() here when a strcat() does
the same thing.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-09-28 12:28:54 +03:00
Sanjay R Mehta
641cdbea76 thunderbolt: Enable retry logic for intra-domain control packets
In case of software connection manager, the response packets are lost
sometimes within the stipulated time. Hence resending the control
packets in such scenario by increasing the retry count TB_CTL_RETRIES
value.

Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-09-27 13:47:36 +03:00
Linus Torvalds
4b93c544e9 thunderbolt: test: split up test cases in tb_test_credit_alloc_all
The tb_test_credit_alloc_all() function had a huge number of
KUNIT_ASSERT() statements, all of which (though the magic of many many
layers of inscrutable macros) ended up allocating and initializing
various test assertion structures on the stack.

Don't do that.  The kernel stack isn't infinite, and we have compiler
warnings (now errors) for the case where a stack frame grows too large.

Like it did here, by not an inconsiderable margin:

   drivers/thunderbolt/test.c: In function ‘tb_test_credit_alloc_all’:
   drivers/thunderbolt/test.c:2367:1: error: the frame size of 4500 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
    2367 | }
         | ^

Solve this similarly to the lib/test_scanf case: split out the tests
into several smaller functions, each just testing one particular tunnel
credit allocation.

This makes the i386 allyesconfig build work for me again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-06 12:27:03 -07:00
Linus Torvalds
07281a257a USB/Thunderbolt patches for 5.15-rc1
Here is the big set of USB and Thunderbolt patches for 5.15-rc1.
 
 Nothing huge in here, just lots of constant forward progress on a number
 of different drivers and hardware support:
 	- more USB 4/Thunderbolt support added
 	- dwc3 driver updates and additions
 	- usb gadget fixes and addtions for new types
 	- udc gadget driver updates
 	- host controller updates
 	- removal of obsolete drivers
 	- other minor driver updates
 
 All of these have been in linux-next for a while with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt patches for 5.15-rc1.

  Nothing huge in here, just lots of constant forward progress on a
  number of different drivers and hardware support:

   - more USB 4/Thunderbolt support added

   - dwc3 driver updates and additions

   - usb gadget fixes and addtions for new types

   - udc gadget driver updates

   - host controller updates

   - removal of obsolete drivers

   - other minor driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (148 commits)
  usb: isp1760: otg control register access
  usb: isp1760: use the right irq status bit
  usb: isp1760: write to status and address register
  usb: isp1760: fix qtd fill length
  usb: isp1760: fix memory pool initialization
  usb: typec: tcpm: Fix spelling mistake "atleast" -> "at least"
  usb: dwc2: Fix spelling mistake "was't" -> "wasn't"
  usb: renesas_usbhs: Fix spelling mistake "faile" -> "failed"
  usb: host: xhci-rcar: Don't reload firmware after the completion
  usb: xhci-mtk: allow bandwidth table rollover
  usb: mtu3: fix random remote wakeup
  usb: mtu3: return successful suspend status
  usb: xhci-mtk: Do not use xhci's virt_dev in drop_endpoint
  usb: xhci-mtk: modify the SOF/ITP interval for mt8195
  usb: xhci-mtk: add a member of num_esit
  usb: xhci-mtk: check boundary before check tt
  usb: xhci-mtk: update fs bus bandwidth by bw_budget_table
  usb: xhci-mtk: fix issue of out-of-bounds array access
  usb: xhci-mtk: support option to disable usb2 ports
  usb: xhci-mtk: fix use-after-free of mtk->hcd
  ...
2021-09-01 09:59:34 -07:00
Greg Kroah-Hartman
bfa109d761 thunderbolt: Changes for v5.15 merge window
This includes following Thunderbolt/USB4 changes for the v5.15 merge
 window:
 
   * Include authorized value in the KOBJ_CHANGE event of a device router
   * A couple of improvements to get the driver working also with the AMD
     USB4 host controller.
 
 All these have been in linux-next with no reported issues.
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Merge tag 'thunderbolt-for-v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.15 merge window

This includes following Thunderbolt/USB4 changes for the v5.15 merge
window:

  * Include authorized value in the KOBJ_CHANGE event of a device router
  * A couple of improvements to get the driver working also with the AMD
    USB4 host controller.

All these have been in linux-next with no reported issues.

* tag 'thunderbolt-for-v5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Fix port linking by checking all adapters
  thunderbolt: Do not read control adapter config space
  thunderbolt: Handle ring interrupt by reading interrupt status register
  thunderbolt: Add vendor specific NHI quirk for auto-clearing interrupt status
  thunderbolt: Add authorized value to the KOBJ_CHANGE uevent
2021-08-24 15:31:33 +02:00
Sanjay R Mehta
42716425ad thunderbolt: Fix port linking by checking all adapters
In tb_switch_default_link_ports(), while linking of ports,
only odd-numbered ports (1,3,5..) are considered and even-numbered
ports are not considered.

AMD host router has lane adapters at 2 and 3 and link ports at adapter 2
is not considered due to which lane bonding gets disabled.

Hence added a fix such that all ports are considered during
linking of ports.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-08-09 14:58:29 +03:00
Sanjay R Mehta
fb7a89ad2f thunderbolt: Do not read control adapter config space
Adapter 0 is the control adapter and as per USB4 spec in section 2.2.6.2
control Adapters do not have an adapter configuration space.

For this reason skip reading adapter config space in tb_port_init() when
the port number is 0. This actually simplifies the rest of the function
as we don't need to check for the port->port == 0 anymore.

While there drop the extra empty line at the end of the function.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-08-09 14:58:29 +03:00
Sanjay R Mehta
7a1808f82a thunderbolt: Handle ring interrupt by reading interrupt status register
As per USB4 specification by default "Disable ISR Auto-Clear" bit is set
to zero and the Tx/Rx ring interrupt status needs to be cleared.

Hence handle it by reading the interrupt status register (ISR) in the
MSI-X handler.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-08-09 14:58:29 +03:00
Sanjay R Mehta
e390909ac7 thunderbolt: Add vendor specific NHI quirk for auto-clearing interrupt status
Introduce nhi_check_quirks() routine to handle any vendor specific quirks
to manage a hardware specific implementation.

On Intel hardware the USB4 controller supports clearing the interrupt
status register automatically right after it is being issued. For this
reason add a new quirk that does that on all Intel hardware.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-08-09 14:58:29 +03:00
Greg Kroah-Hartman
bd935a7b21 Merge 5.14-rc5 into driver-core-next
We need the driver core fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-09 09:03:47 +02:00
Rajat Jain
1651d9e781 thunderbolt: Add authorized value to the KOBJ_CHANGE uevent
For security reasons, we would like to monitor and track when the
Thunderbolt devices are authorized and deauthorized (i.e. when the
Thunderbolt sysfs "authorized" attribute changes). Currently the
userspace gets a udev change notification when there is a change, but
the state may have changed (again) by the time we look at the authorized
attribute in sysfs. So an authorization event may go unnoticed. Thus
make it easier by informing the actual change (new value of authorized
attribute) in the udev change notification.

The change is included as a key value "authorized=<val>" where <val>
is the new value of sysfs attribute "authorized", and is described at
Documentation/ABI/testing/sysfs-bus-thunderbolt under
/sys/bus/thunderbolt/devices/.../authorized.

Signed-off-by: Rajat Jain <rajatja@google.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-08-02 18:03:36 +03:00
Mika Westerberg
8e3341257e Revert "thunderbolt: Hide authorized attribute if router does not support PCIe tunnels"
This reverts commit 6f3badead6.

It turns out bolt depends on having authorized attribute visible under
each device. Hiding it makes bolt crash as several people have reported
on various bug trackers. For this reason revert the commit.

Link: https://gitlab.freedesktop.org/bolt/bolt/-/issues/174
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1979765
Link: https://bugs.archlinux.org/task/71569
Cc: stable@vger.kernel.org
Cc: Christian Kellner <ckellner@redhat.com>
Fixes: 6f3badead6 ("thunderbolt: Hide authorized attribute if router does not support PCIe tunnels")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20210727142501.27476-1-mika.westerberg@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-27 18:14:25 +02:00
Uwe Kleine-König
fc7a6209d5 bus: Make remove callback return void
The driver core ignores the return value of this callback because there
is only little it can do when a device disappears.

This is the final bit of a long lasting cleanup quest where several
buses were converted to also return void from their remove callback.
Additionally some resource leaks were fixed that were caused by drivers
returning an error code in the expectation that the driver won't go
away.

With struct bus_type::remove returning void it's prevented that newly
implemented buses return an ignored error code and so don't anticipate
wrong expectations for driver authors.

Reviewed-by: Tom Rix <trix@redhat.com> (For fpga)
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com> (For drivers/s390 and drivers/vfio)
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> (For ARM, Amba and related parts)
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org> (for sunxi-rsb)
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> (for media)
Acked-by: Hans de Goede <hdegoede@redhat.com> (For drivers/platform)
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Juergen Gross <jgross@suse.com> (For xen)
Acked-by: Lee Jones <lee.jones@linaro.org> (For mfd)
Acked-by: Johannes Thumshirn <jth@kernel.org> (For mcb)
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> (For slimbus)
Acked-by: Kirti Wankhede <kwankhede@nvidia.com> (For vfio)
Acked-by: Maximilian Luz <luzmaximilian@gmail.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> (For ulpi and typec)
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> (For ipack)
Acked-by: Geoff Levand <geoff@infradead.org> (For ps3)
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com> (For thunderbolt)
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> (For intel_th)
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> (For pcmcia)
Acked-by: Rafael J. Wysocki <rafael@kernel.org> (For ACPI)
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> (rpmsg and apr)
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> (For intel-ish-hid)
Acked-by: Dan Williams <dan.j.williams@intel.com> (For CXL, DAX, and NVDIMM)
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> (For isa)
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (For firewire)
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> (For hid)
Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> (For siox)
Acked-by: Sven Van Asbroeck <TheSven73@gmail.com> (For anybuss)
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (For MMC)
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 11:53:42 +02:00
Linus Torvalds
79160a603b USB / Thunderbolt patches for 5.14-rc1
Here is the big set of USB and Thunderbolt patches for 5.14-rc1.
 
 Nothing major here just lots of little changes for new hardware and
 features.  Highlights are:
 	- more USB 4 support added to the thunderbolt core
 	- build warning fixes all over the place
 	- usb-serial driver updates and new device support
 	- mtu3 driver updates
 	- gadget driver updates
 	- dwc3 driver updates
 	- dwc2 driver updates
 	- isp1760 host driver updates
 	- musb driver updates
 	- lots of other tiny things.
 
 Full details are in the shortlog.
 
 All of these have been in linux-next for a while now with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt patches for 5.14-rc1.

  Nothing major here just lots of little changes for new hardware and
  features. Highlights are:

   - more USB 4 support added to the thunderbolt core

   - build warning fixes all over the place

   - usb-serial driver updates and new device support

   - mtu3 driver updates

   - gadget driver updates

   - dwc3 driver updates

   - dwc2 driver updates

   - isp1760 host driver updates

   - musb driver updates

   - lots of other tiny things.

  Full details are in the shortlog.

  All of these have been in linux-next for a while now with no reported
  issues"

* tag 'usb-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (223 commits)
  phy: qcom-qusb2: Add configuration for SM4250 and SM6115
  dt-bindings: phy: qcom,qusb2: document sm4250/6115 compatible
  dt-bindings: usb: qcom,dwc3: Add bindings for sm6115/4250
  USB: cdc-acm: blacklist Heimann USB Appset device
  usb: xhci-mtk: allow multiple Start-Split in a microframe
  usb: ftdi-elan: remove redundant continue statement in a while-loop
  usb: class: cdc-wdm: return the correct errno code
  xhci: remove redundant continue statement
  usb: dwc3: Fix debugfs creation flow
  usb: gadget: hid: fix error return code in hid_bind()
  usb: gadget: eem: fix echo command packet response issue
  usb: gadget: f_hid: fix endianness issue with descriptors
  Revert "USB: misc: Add onboard_usb_hub driver"
  Revert "of/platform: Add stubs for of_platform_device_create/destroy()"
  Revert "usb: host: xhci-plat: Create platform device for onboard hubs in probe()"
  Revert "arm64: dts: qcom: sc7180-trogdor: Add nodes for onboard USB hub"
  xhci: solve a double free problem while doing s4
  xhci: handle failed buffer copy to URB sg list and fix a W=1 copiler warning
  xhci: Add adaptive interrupt rate for isoch TRBs with XHCI_AVOID_BEI quirk
  xhci: Remove unused defines for ERST_SIZE and ERST_ENTRIES
  ...
2021-07-05 14:16:22 -07:00
Linus Torvalds
a48ad6e7a3 linux-kselftest-kunit-fixes-5.14-rc1
This KUnit update for Linux 5.14-rc1 consists of fixes and features:
 
 -- add support for skipped tests
 -- introduce kunit_kmalloc_array/kunit_kcalloc() helpers
 -- add gnu_printf specifiers
 -- add kunit_shutdown
 -- add unit test for filtering suites by names
 -- convert lib/test_list_sort.c to use KUnit
 -- code organization moving default config to tools/testing/kunit
 -- refactor of internal parser input handling
 -- cleanups and updates to documentation
 -- code cleanup related to casts
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Merge tag 'linux-kselftest-kunit-fixes-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull KUnit update from Shuah Khan:
 "Fixes and features:

   - add support for skipped tests

   - introduce kunit_kmalloc_array/kunit_kcalloc() helpers

   - add gnu_printf specifiers

   - add kunit_shutdown

   - add unit test for filtering suites by names

   - convert lib/test_list_sort.c to use KUnit

   - code organization moving default config to tools/testing/kunit

   - refactor of internal parser input handling

   - cleanups and updates to documentation

   - code cleanup related to casts"

* tag 'linux-kselftest-kunit-fixes-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (29 commits)
  kunit: add unit test for filtering suites by names
  kasan: test: make use of kunit_skip()
  kunit: test: Add example tests which are always skipped
  kunit: tool: Support skipped tests in kunit_tool
  kunit: Support skipped tests
  thunderbolt: test: Reinstate a few casts of bitfields
  kunit: tool: internal refactor of parser input handling
  lib/test: convert lib/test_list_sort.c to use KUnit
  kunit: introduce kunit_kmalloc_array/kunit_kcalloc() helpers
  kunit: Remove the unused all_tests.config
  kunit: Move default config from arch/um -> tools/testing/kunit
  kunit: arch/um/configs: Enable KUNIT_ALL_TESTS by default
  kunit: Add gnu_printf specifiers
  lib/cmdline_kunit: Remove a cast which are no-longer required
  kernel/sysctl-test: Remove some casts which are no-longer required
  thunderbolt: test: Remove some casts which are no longer required
  mmc: sdhci-of-aspeed: Remove some unnecessary casts from KUnit tests
  iio: Remove a cast in iio-test-format which is no longer required
  device property: Remove some casts in property-entry-test
  Documentation: kunit: Clean up some string casts in examples
  ...
2021-07-02 12:58:26 -07:00
David Gow
824945a5b0 thunderbolt: test: Reinstate a few casts of bitfields
Partially revert "thunderbolt: test: Remove some casts which are no
longer required". It turns out that typeof() doesn't support bitfields,
so these still need to be cast to the appropriate enum.

The only mention of typeof() and bitfields I can find is in the proposal
to standardise them:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2619.htm

This was caught by the kernel test robot:
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org/thread/FDKBHAV7QNLNFU5NBI2RKV56DWDSOLGM/

Fixes: 8f0877c26e ("thunderbolt: test: Remove some casts which are no longer required")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-06-25 11:31:03 -06:00
David Gow
8f0877c26e thunderbolt: test: Remove some casts which are no longer required
With some of the stricter type checking in KUnit's EXPECT macros
removed, several casts in the thunderbolt KUnit tests are no longer
required.

Remove the unnecessary casts, making the conditions clearer.

Signed-off-by: David Gow <davidgow@google.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-06-23 16:40:18 -06:00
Gil Fine
b18f901382 thunderbolt: Fix DROM handling for USB4 DROM
DROM for USB4 host/device has a shorter header than Thunderbolt DROM
header. This patch addresses host/device with USB4 DROM (According to spec:
Universal Serial Bus 4 (USB4) Device ROM Specification, Rev 1.0, Feb-2021).

While there correct the data_len field to be 12 bits and rename
__unknown1 to reserved following the spec.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-15 13:51:07 +03:00
Azhar Shaikh
135794868a thunderbolt: Add support for Intel Alder Lake
Alder Lake has the same integrated Thunderbolt/USB4 controller as
Intel Tiger Lake. By default it is still using firmware based connection
manager so we can use most of the Tiger Lake flows.

Add the Alder Lake PCI IDs to the driver list of supported devices.

Signed-off-by: Azhar Shaikh <azhar.shaikh@intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-11 11:42:54 +03:00
Mika Westerberg
2a8b519ece thunderbolt: No need to include <linux/acpi.h> in usb4_port.c
This include is not needed so drop it.

Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-11 11:42:54 +03:00
Gil Fine
0172e41145 thunderbolt: Poll 10ms for REG_FW_STS_NVM_AUTH_DONE to be set
In Intel Tiger Lake and beyond it takes some time after the force power
is set until the firmware connection manager is ready. So instead of
reading it once we poll it for 10ms before giving up.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-11 11:42:54 +03:00
Mika Westerberg
349bfe089d thunderbolt: Add device links only when software connection manager is used
We only need to set up the device links when software connection manager
path is used. The firmware connection manager does not need them and if
they are present they may even cause problems.

Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-11 11:42:54 +03:00
Mika Westerberg
a0d36fa106 thunderbolt: Bond lanes only when dual_link_port != NULL in alloc_dev_default()
We should not dereference ->dual_link_port if it is NULL and lane bonding
is requested. For this reason move lane bonding configuration happen
inside the block where ->dual_link_port != NULL.

Fixes: 54509f5005 ("thunderbolt: Add KUnit tests for path walking")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-11 11:42:54 +03:00
Mika Westerberg
25335b30da thunderbolt: Check for NVM authentication status after the operation started
If the NVM authentication fails immediately, like if the firmware
detects that the image is not valid for some reason, better to read the
status once and if set to non-zero fail the operation accordingly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:32 +03:00
Rajmohan Mani
faa1c615f0 thunderbolt: Add WRITE_ONLY and AUTHENTICATE_ONLY NVM operations for retimers
The same way we support these two operations for USB4 routers we can
extend the retimer NVM operations to support retimers also.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:32 +03:00
Mika Westerberg
1cbf680f76 thunderbolt: Allow router NVM authenticate separately
It may be useful if the actual NVM authentication can be delayed to be
run later, for instance when the user logs out. For this reason add a
new NVM operation (AUHENTICATE_ONLY) that just triggers the authentication
procedure over whatever was written to the NVM storage.

This is not supported with Thunderbolt 1-3 devices, though.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:32 +03:00
Rajmohan Mani
ff3a830645 thunderbolt: Move nvm_write_ops to tb.h
Currently these write ops are used for updating router firmware images
only. Moving to tb.h helps the retimers also to use the same ops.

Also add tb_ prefix to the enum while there.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:32 +03:00
Rajmohan Mani
3fb10ea4ce thunderbolt: Add support for retimer NVM upgrade when there is no link
With help from platform firmware (ACPI) it is possible to power on
retimers even when there is no USB4 link (e.g nothing is connected to
the USB4 ports). This allows us to bring the USB4 sideband up so that we
can access retimers and upgrade their NVM firmware.

If the platform has support for this, we expose two additional
attributes under USB4 ports: offline and rescan. These can be used to
bring the port offline, rescan for the retimers and put the port online
again. The retimer NVM upgrade itself works the same way than with cable
connected.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00
Rajmohan Mani
3406de7cc2 thunderbolt: Add additional USB4 port operations for retimer access
When accessing retimers when there is no cable connected we are going to
need additional USB4 port operations. First the port needs to be put
into offline mode, and then the sideband channel transactions must be
enabled on the SBTX line. This adds support for these operations.

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00
Rajmohan Mani
ccc5cb8ad5 thunderbolt: Add support for ACPI _DSM to power on/off retimers
Typically retimers can be accessed only when the USB4 link is up (e.g
there is a cable connected). However, sometimes it is useful to be able
to access retimers even if there is nothing connected to the USB4 port.
For instance we may still want to be able to upgrade the retimer NVM
firmware even if the user does not have any USB4 devices. This is
something that USB4 spec leaves to implementers.

In case of ACPI based systems, we can support this by providing a
special _DSM method under each USB4 port. This _DSM can be used to turn
on power to on-board retimers (and cycle it through different modes so
that the sideband becomes usable).

This patch adds support for this _DSM and makes the functionality
available to the rest of the driver through tb_acpi_power_[on|off]_retimers().

Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Co-developed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00
Mika Westerberg
cae5f5151d thunderbolt: Add USB4 port devices
Create devices for each USB4 port. This is needed when we add retimer
access when there is no device connected but may be useful for other
purposes too following what USB subsystem does. This exports a single
attribute "link" that shows the type of the USB4 link (or "none" if
there is no cable connected).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00
Mika Westerberg
0f28879cf6 thunderbolt: Log the link as TBT instead of TBT3
The upstream port can be connected to any previous generation
Thunderbolt port so logging as "TBT" is more accurate than "TBT3.

No functional changes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-01 10:53:31 +03:00
Mika Westerberg
bfa8f78e06 thunderbolt: Add KUnit tests for credit allocation
This adds a couple of KUnit tests for USB4 credit allocation.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
7c37bb304f thunderbolt: Add quirk for Intel Goshen Ridge DP credits
Intel Goshen Ridge reports wrong DP main credits in NVM 27 and earlier,
so add a quirk that fixes it. We also need to expand the quirk table to
match on hardware vendor/device IDs too.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
6ed541c53e thunderbolt: Allocate credits according to router preferences
The USB4 Connection Manager guide provides detailed information how the
USB4 router buffer (credit) allocation information should be used by the
connection manager when it allocates buffers for different paths. This
patch implements it for Linux. For USB 3.x and DisplayPort we use
directly the router preferences. The rest of the buffer space is then
used for PCIe and DMA (peer-to-peer, XDomain) traffic. DMA tunnels
require at least one buffer and PCIe six, so if there is not enough
buffers we fail the tunnel creation.

For the legacy Thunderbolt 1-3 devices we use the existing hard-coded
scheme except for DMA where we use the values suggested by the USB4 spec
chapter 13.

Co-developed-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
69fea377e6 thunderbolt: Update port credits after bonding is enabled/disabled
Once lane bonding has been enabled (or disabled) both lane adapters may
update their total credits accordingly. For this reason re-read the port
credits after lane bonding has been enabled or disabled.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
56ad3aef5c thunderbolt: Read router preferred credit allocation information
USB4 routers must expose their preferred credit (buffer) allocation
information through router operation. This information tells the
connection manager how the router prefers its buffers to be allocated to
get the expected bandwidth for the supported protocols.

Read this information and store it as part of struct tb_switch for each
USB4 router.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
e7051beab8 thunderbolt: Wait for the lanes to actually bond
It may take some time until the two lanes enter bonded state so poll for
the link width to match what is expected before going forward. This ensures
the link is in expected state before we start establishing paths through
it.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
02c5e7c2db thunderbolt: Move nfc_credits field to struct tb_path_hop
With the USB4 buffer allocation the number of credits (and non-flow
credits) may be different depending on the router buffer allocation
preferences. To allow this move the nfc_credits field to struct
tb_path_hop.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
1c561e4e65 thunderbolt: Make tb_port_type() take const parameter
The function does not modify the object in any way so make the parameter
const to reflect this.

No functional changes intended.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-06-01 10:48:59 +03:00
Mika Westerberg
3caf88871c thunderbolt: Align USB4 router wakes configuration with the CM guide
The USB4 Configuration Manager guide suggests that the USB4 port wakes
are configured in a certain way, like that when the port is configured
the wake-on-connect should not be set and so forth, so align the driver
with this.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-31 14:40:08 +03:00
Mika Westerberg
6026b703e8 thunderbolt: Add wake from DisplayPort
Latest USB4 spec added a new wake bit for DisplayPort so add this to the
driver when runtime suspending. This way wake up the domain when a new
monitor is plugged in to any of the device routers.

Also do the same for pre-USB4 devices through the link controller
registers as documented in chapter 13 of the USB4 spec.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-31 14:39:52 +03:00
Mika Westerberg
34163dfad4 thunderbolt: Use generic tb_nvm_[read|write]_data() for Thunderbolt 2/3 devices
Now that we have generic functionality available in nvm.c make the DMA
port code call it instead of duplicating the functionality.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-31 14:37:54 +03:00
Mika Westerberg
9b38303777 thunderbolt: Split NVM read/write generic functions out from usb4.c
We do this for Thunderbolt 2/3 devices through DMA port, USB4 devices
and retimers pretty much the same way. Only the actual block read/write
is different. For this reason split out the NVM read/write functions
from usb4.c to nvm.c and make USB4 device code call these when needed.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-31 14:37:48 +03:00
Crag Wang
fe6f6f9591 thunderbolt: Add self-authenticate support for new dock
Add new device known to support self-authenticate on disconnect.

Signed-off-by: Crag Wang <crag.wang@dell.com>
Reviewed-by: Mario Limonciello <mario.limonciello@outlook.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-31 14:33:14 +03:00
Mathias Nyman
22c7a18ed5 thunderbolt: usb4: Fix NVM read buffer bounds and offset issue
Up to 64 bytes of data can be read from NVM in one go.
Read address must be dword aligned. Data is read into a local buffer.

If caller asks to read data starting at an unaligned address then full
dword is anyway read from NVM into a local buffer. Data is then copied
from the local buffer starting at the unaligned offset to the caller
buffer.

In cases where asked data length + unaligned offset is over 64 bytes
we need to make sure we don't read past the 64 bytes in the local
buffer when copying to caller buffer, and make sure that we don't
skip copying unaligned offset bytes from local buffer anymore after
the first round of 64 byte NVM data read.

Fixes: b04079837b ("thunderbolt: Add initial support for USB4")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-20 11:52:58 +03:00
Mathias Nyman
b106776080 thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
Up to 64 bytes of data can be read from NVM in one go. Read address
must be dword aligned. Data is read into a local buffer.

If caller asks to read data starting at an unaligned address then full
dword is anyway read from NVM into a local buffer. Data is then copied
from the local buffer starting at the unaligned offset to the caller
buffer.

In cases where asked data length + unaligned offset is over 64 bytes
we need to make sure we don't read past the 64 bytes in the local
buffer when copying to caller buffer, and make sure that we don't
skip copying unaligned offset bytes from local buffer anymore after
the first round of 64 byte NVM data read.

Fixes: 3e13676862 ("thunderbolt: Add support for DMA configuration based mailbox")
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-05-20 11:52:52 +03:00
Greg Kroah-Hartman
5367f82a21 thunderbolt: Changes for v5.13 merge window
This includes following Thunderbolt/USB4 changes for v5.13 merge window:
 
   * Debugfs improvements
 
   * Align the inter-domain (peer-to-peer) support with the USB4
     inter-domain spec for better interoperability
 
   * Add support for USB4 DROM and the new product descriptor
 
   * More KUnit tests
 
   * Detailed uevent for routers
 
   * Few miscellaneous improvements
 
 All these have been in linux-next without reported issues.
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Merge tag 'thunderbolt-for-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.13 merge window

This includes following Thunderbolt/USB4 changes for v5.13 merge window:

  * Debugfs improvements

  * Align the inter-domain (peer-to-peer) support with the USB4
    inter-domain spec for better interoperability

  * Add support for USB4 DROM and the new product descriptor

  * More KUnit tests

  * Detailed uevent for routers

  * Few miscellaneous improvements

All these have been in linux-next without reported issues.

* tag 'thunderbolt-for-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (24 commits)
  thunderbolt: Hide authorized attribute if router does not support PCIe tunnels
  thunderbolt: Add details to router uevent
  thunderbolt: Unlock on error path in tb_domain_add()
  thunderbolt: Add support for USB4 DROM
  thunderbolt: Check quirks in tb_switch_add()
  thunderbolt: Add KUnit tests for DMA tunnels
  thunderbolt: Add KUnit tests for XDomain properties
  net: thunderbolt: Align the driver to the USB4 networking spec
  thunderbolt: Allow multiple DMA tunnels over a single XDomain connection
  thunderbolt: Drop unused tb_port_set_initial_credits()
  thunderbolt: Use dedicated flow control for DMA tunnels
  thunderbolt: Add support for maxhopid XDomain property
  thunderbolt: Add tb_property_copy_dir()
  thunderbolt: Align XDomain protocol timeouts with the spec
  thunderbolt: Use pseudo-random number as initial property block generation
  thunderbolt: Do not re-establish XDomain DMA paths automatically
  thunderbolt: Add more logging to XDomain connections
  Documentation / thunderbolt: Drop speed/lanes entries for XDomain
  thunderbolt: Decrease control channel timeout for software connection manager
  thunderbolt: Do not pass timeout for tb_cfg_reset()
  ...
2021-04-13 12:17:14 +02:00
Mika Westerberg
6f3badead6 thunderbolt: Hide authorized attribute if router does not support PCIe tunnels
With USB4 devices PCIe tunneling is optional so for device routers
without PCIe upstream adapter it does not make much sense to expose the
authorized attribute. For this reason hide it if PCIe tunneling is not
supported by the device router.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09 12:26:24 +03:00
Mika Westerberg
2f608ba196 thunderbolt: Add details to router uevent
Expose two environment variables for routers as part of the initial
uevent:

  USB4_VERSION=1.0
  USB4_TYPE=host|device|hub

Userspace can use this information to expose more details about each
connected device. Only USB4 devices have USB4_VERSION but all devices
have USB4_TYPE.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-09 12:26:10 +03:00
Dan Carpenter
08fe7ae185 thunderbolt: Fix off by one in tb_port_find_retimer()
This array uses 1-based indexing so it corrupts memory one element
beyond of the array.  Fix it by making the array one element larger.

Fixes: dacb12877d ("thunderbolt: Add support for on-board retimers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-30 13:38:10 +03:00
Dan Carpenter
bec4d7c93a thunderbolt: Fix a leak in tb_retimer_add()
After the device_register() succeeds, then the correct way to clean up
is to call device_unregister().  The unregister calls both device_del()
and device_put().  Since this code was only device_del() it results in
a memory leak.

Fixes: dacb12877d ("thunderbolt: Add support for on-board retimers")
Cc: stable@vger.kernel.org
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-30 13:37:32 +03:00
Dan Carpenter
2e7a5b3e22 thunderbolt: Unlock on error path in tb_domain_add()
We accidentally deleted this unlock on the error path.  Undelete it.

Fixes: 7f0a34d790 ("thunderbolt: Decrease control channel timeout for software connection manager")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-23 17:09:34 +03:00
Mika Westerberg
3231307e39 thunderbolt: Add support for USB4 DROM
USB4 router DROM differs sligthly from Thunderbolt 1-3 DROM. For
instance it does not include UID and CRC8 in the header section, and it
has product descriptor genereric entry to describe the product IDs and
related information. If the "Version" field in the DROM header section
reads 3 it means the router only has USB4 DROM and if it reads 1 it
means the router supports TBT3 compatible DROM.

For this reason, update the DROM parsing code to support "pure" USB4
DROMs too.

While there drop the extra empty line at the end of tb_drom_read().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:32 +03:00
Mika Westerberg
e23a5afd01 thunderbolt: Check quirks in tb_switch_add()
This makes it more visible on the main path of adding router.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:32 +03:00
Mika Westerberg
5adab6cc45 thunderbolt: Add KUnit tests for DMA tunnels
Add a couple of tests to check DMA tunneling functionality.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:32 +03:00
Mika Westerberg
15a4c7e8f9 thunderbolt: Add KUnit tests for XDomain properties
This adds KUnit tests for parsing, formatting and copying of XDomain
properties.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:32 +03:00
Mika Westerberg
180b068942 thunderbolt: Allow multiple DMA tunnels over a single XDomain connection
Currently we have had an artificial limitation of a single DMA tunnel
per XDomain connection. However, hardware wise there is no such limit
and software based connection manager can take advantage of all the DMA
rings available on the host to establish tunnels.

For this reason make the tb_xdomain_[enable|disable]_paths() to take the
DMA ring and HopID as parameter instead of storing them in the struct
tb_xdomain. We also add API functions to allocate input and output
HopIDs of the XDomain connection that the service drivers can use
instead of hard-coding.

Also convert the two existing service drivers over to this API.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
5cfdd300b7 thunderbolt: Drop unused tb_port_set_initial_credits()
This function is not used anymore in the driver so we can remove it.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
e5876559b5 thunderbolt: Use dedicated flow control for DMA tunnels
The USB4 inter-domain service spec recommends using dedicated flow
control scheme so update the driver accordingly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
46b494f286 thunderbolt: Add support for maxhopid XDomain property
USB4 inter-domain spec mandates that the compatible hosts expose a new
property "maxhopid" that tells the connection manager on the other side
what is the maximum supported input HopID over the connection. Since
this is depend on the lane adapter the cable is connected it needs to be
filled in dynamically.

For this reason we take a copy of the global properties and fill then
for each XDomain connection upon first connect, and then keep updating
it if the generation changes as services are being added/removed. We
also take advantage of this copy to fill in the hostname.

We also expose this maxhopid as an attribute under each XDomain device.

While there drop kernel-doc entry for property_lock which seems to be
left there when the structure was originally introduced.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
7d3084c0b7 thunderbolt: Add tb_property_copy_dir()
This function takes a deep copy of the properties. We need this in order
to support more dynamic properties per XDomain connection as required by
the USB4 inter-domain service spec.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
3bb163331e thunderbolt: Align XDomain protocol timeouts with the spec
The USB4 inter-domain service spec has slightly different recommended
timeouts for the XDomain protocol so align the driver with those.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
a6932c3f9e thunderbolt: Use pseudo-random number as initial property block generation
As recommended by USB4 inter-domain service spec use pseudo-random value
instead of zero as initial XDomain property block generation value.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:31 +03:00
Mika Westerberg
8ccbed2476 thunderbolt: Do not re-establish XDomain DMA paths automatically
This step is actually not needed. The service drivers themselves will
handle this once they have negotiated the service up and running again
with the remote side. Also dropping this makes it easier to add support
for multiple DMA tunnels over a single XDomain connection.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:30 +03:00
Mika Westerberg
d29c59b1a4 thunderbolt: Add more logging to XDomain connections
Currently the driver is pretty quiet when another host is connected
which makes debugging possible issues harder. For this reason add more
logging on debug level that can be turned on as needed.

While there log the host-to-host connection on info level analogous to
routers and retimers.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:30 +03:00
Mika Westerberg
7f0a34d790 thunderbolt: Decrease control channel timeout for software connection manager
When the firmware connection manager is not proxying between the
software and the hardware we can decrease the timeout for control
packets significantly. The USB4 spec recommends 10 ms +- 1 ms but we use
slightly larger value (100 ms) which is recommendation from Intel
Thunderbolt firmware folks. When firmware connection manager is running
then we keep using the existing 5000 ms.

To implement this we move the control channel allocation to
tb_domain_alloc(), and pass the timeout from that function to the
tb_ctl_alloc(). Then make both connection manager implementations pass
the timeout when they alloc the domain structure.

While there update kernel-doc of struct tb_ctl to match the reality.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:30 +03:00
Mika Westerberg
bda83aeca3 thunderbolt: Do not pass timeout for tb_cfg_reset()
There is only one user for this function and it passes the default
timeout to it anyway, so remove the parameter completely. This is also
needed in the subsequent patch where we allow connection manager
implementations to use different timeout for non-raw control channel
messages.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:30 +03:00
Mika Westerberg
61ec15e553 thunderbolt: Disable retry logic for intra-domain control packets
In most cases the response packet is lost because the router in question
was disconnected by the user. Resending the control packet in that case
just adds unnecessary delays, so disable that for intra-domain control
packets. For inter-domain (XDomain) packets we continue retrying.

This also aligns the driver better what the Intel connection manager
firmware is doing.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-18 18:25:30 +03:00
Gil Fine
3382665a5c thunderbolt: debugfs: Show all accessible dwords
Currently, when first failure occurs while reading of the block,
we stop reading the block and jump to the next capability.
This doesn't cover the case of block with "holes" of inaccessible
dwords, followed by accessible dwords.
This patch address this problem.
In case of failure while reading the complete block in one transaction,
(because of one or more dwords is inaccessible), we read the remaining
dwords of the block dword-by-dword, one dword per transaction,
till the end of the block.
By doing this, we handle the case of block with "holes" of inaccessible
dwords, followed by accessible dwords. The accessible dwords are shown
with the fields: <offset> <relative_offset> <cap_id> <vs_cap_id> <value>
E.g.:
0x01eb  236 0x05 0x06 0x0000d166
While the inaccesible dwords are shown as: <offset> <not accessible>
E.g.:
0x01ed <not accessible>

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-12 13:13:34 +03:00
Mika Westerberg
c94732bda0 thunderbolt: Increase runtime PM reference count on DP tunnel discovery
If the driver is unbound and then bound back it goes over the topology
and figure out the existing tunnels. However, if it finds DP tunnel it
should make sure the domain does not runtime suspend as otherwise it
will tear down the DP tunnel unexpectedly.

Fixes: 6ac6faee5d ("thunderbolt: Add runtime PM for Software CM")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-08 14:22:42 +03:00
Mika Westerberg
781e14eaa7 thunderbolt: Initialize HopID IDAs in tb_switch_alloc()
If there is a failure before the tb_switch_add() is called the switch
object is released by tb_switch_release() but at that point HopID IDAs
have not yet been initialized. So we see splat like this:

BUG: spinlock bad magic on CPU#2, kworker/u8:5/115
...
Workqueue: thunderbolt0 tb_handle_hotplug
Call Trace:
 dump_stack+0x97/0xdc
 ? spin_bug+0x9a/0xa7
 do_raw_spin_lock+0x68/0x98
 _raw_spin_lock_irqsave+0x3f/0x5d
 ida_destroy+0x4f/0x127
 tb_switch_release+0x6d/0xfd
 device_release+0x2c/0x7d
 kobject_put+0x9b/0xbc
 tb_handle_hotplug+0x278/0x452
 process_one_work+0x1db/0x396
 worker_thread+0x216/0x375
 kthread+0x14d/0x155
 ? pr_cont_work+0x58/0x58
 ? kthread_blkcg+0x2e/0x2e
 ret_from_fork+0x1f/0x40

Fix this by always initializing HopID IDAs in tb_switch_alloc().

Fixes: 0b2863ac3c ("thunderbolt: Add functions for allocating and releasing HopIDs")
Cc: stable@vger.kernel.org
Reported-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-08 14:22:35 +03:00
Gil Fine
d59b8faa04 thunderbolt: Drop unused functions tb_switch_is_[ice|tiger]_lake()
Drop the two functions not used anymore in the driver.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-08 13:41:40 +03:00
Gil Fine
815f421b6f thunderbolt: debugfs: Handle fail reading block
There are cases when reading block of dwords in single transaction fail,
for several reasons, mostly if HW publish to implement all of the dwords,
while actually it doesn't or if some dwords not accessible for read
for security reasons. We handle these cases by trying to read the block,
dword-by-dword, one dword per transaction, till we get a failure.

Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-03-08 13:41:40 +03:00
Greg Kroah-Hartman
0a25669ba8 thunderbolt: Changes for v5.12 merge window
This includes following Thunderbolt/USB4 changes for v5.12 merge
 window:
 
   * Start lane initialization after sleep for Thunderbolt 3 compatible
     devices
 
   * Add support for de-authorizing PCIe tunnels (software based
     connection manager only)
 
   * Add support for new ACPI 6.4 USB4 _OSC
 
   * Allow disabling XDomain protocol
 
   * Add support for new SL5 security level
 
   * Clean up kernel-docs to pass W=1 builds
 
   * A couple of cleanups and minor fixes
 
 All these have been in linux-next without reported issues.
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Merge tag 'thunderbolt-for-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.12 merge window

This includes following Thunderbolt/USB4 changes for v5.12 merge
window:

  * Start lane initialization after sleep for Thunderbolt 3 compatible
    devices

  * Add support for de-authorizing PCIe tunnels (software based
    connection manager only)

  * Add support for new ACPI 6.4 USB4 _OSC

  * Allow disabling XDomain protocol

  * Add support for new SL5 security level

  * Clean up kernel-docs to pass W=1 builds

  * A couple of cleanups and minor fixes

All these have been in linux-next without reported issues.

* tag 'thunderbolt-for-v5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (27 commits)
  thunderbolt: Add support for native USB4 _OSC
  ACPI: Add support for native USB4 control _OSC
  ACPI: Execute platform _OSC also with query bit clear
  thunderbolt: Allow disabling XDomain protocol
  thunderbolt: Add support for PCIe tunneling disabled (SL5)
  thunderbolt: dma_test: Drop unnecessary include
  thunderbolt: Add clarifying comments about USB4 terms router and adapter
  thunderbolt: switch: Fix kernel-doc descriptions of non-static functions
  thunderbolt: nhi: Fix kernel-doc descriptions of non-static functions
  thunderbolt: path: Fix kernel-doc descriptions of non-static functions
  thunderbolt: eeprom: Fix kernel-doc descriptions of non-static functions
  thunderbolt: ctl: Fix kernel-doc descriptions of non-static functions
  thunderbolt: switch: Fix function name in the header
  thunderbolt: tunnel: Fix misspelling of 'receive_path'
  thunderbolt: icm: Fix a couple of formatting issues
  thunderbolt: switch: Demote a bunch of non-conformant kernel-doc headers
  thunderbolt: tb: Kernel-doc function headers should document their parameters
  thunderbolt: nhi: Demote some non-conformant kernel-doc headers
  thunderbolt: xdomain: Fix 'tb_unregister_service_driver()'s 'drv' param
  thunderbolt: eeprom: Demote non-conformant kernel-doc headers to standard comment blocks
  ...
2021-02-09 13:00:07 +01:00
Mika Westerberg
c6da62a219 thunderbolt: Add support for native USB4 _OSC
ACPI 6.4 introduced a new _OSC capability used to negotiate whether the
OS is supposed to use Software (native) or Firmware based Connection
Manager. If the native support is granted then there are set of bits
that enable/disable different tunnel types that the Software Connection
Manager is allowed to tunnel.

This adds support for this new USB4 _OSC accordingly. When PCIe
tunneling is disabled then the driver switches security level to be
"nopcie" following the security level 5 used in Firmware based
Connection Manager.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-02-04 10:45:25 +03:00
Mika Westerberg
5ca6768825 thunderbolt: Allow disabling XDomain protocol
This allows disabling XDomain protocol completely if the user does not
plan to use the USB4/Thunderbolt peer-to-peer functionality, or for
security reasons.

XDomain protocol is enabled by default but with this commit it is
possible to disable it by passing "xdomain=0" as module parameter (or
through the kernel command line).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-02-04 10:45:25 +03:00
Mika Westerberg
3cd542e6e6 thunderbolt: Add support for PCIe tunneling disabled (SL5)
Recent Intel Thunderbolt firmware connection manager has support for
another security level, SL5, that disables PCIe tunneling. This option
can be turned on from the BIOS.

When this is set the driver exposes a new security level "nopcie" to the
userspace and hides the authorized attribute under connected devices.

While there we also hide it when "dponly" security level is enabled
since it is not really usable in that case anyway.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-02-04 10:45:24 +03:00
Mika Westerberg
8b0ab503c0 thunderbolt: dma_test: Drop unnecessary include
It seems <linux/acpi.h> is not actually needed in this driver so we can
drop it.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-02-04 10:39:13 +03:00
Mika Westerberg
c3963a5563 thunderbolt: Add clarifying comments about USB4 terms router and adapter
USB4 spec talks about routers and adapters whereas Thunderbolt 1-3
talked about CIO (Converged I/O) switches and ports. These are the same
thing but might cause confusion so add clarifying comments to struct
tb_switch and struct tb_port about the USB4 terms.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-02-04 10:38:38 +03:00
Mika Westerberg
5c6b471b6c thunderbolt: switch: Fix kernel-doc descriptions of non-static functions
Fix kernel-doc descriptions of all non-static functions. This also gets
rid of the warnings on W=1 build.

Reported-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
2021-02-04 10:38:38 +03:00
Mika Westerberg
6894bd3753 thunderbolt: nhi: Fix kernel-doc descriptions of non-static functions
Fix kernel-doc descriptions of the two non-static functions. This also
gets rids of the warnings on W=1 build.

Reported-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
2021-02-04 10:38:38 +03:00
Mika Westerberg
5fbcb2d127 thunderbolt: path: Fix kernel-doc descriptions of non-static functions
Fix kernel-doc descriptions of the two non-static functions. This also
gets rid of the warnings on W=1 build.

Reported-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
2021-02-04 10:38:37 +03:00
Mika Westerberg
b12e4824f1 thunderbolt: eeprom: Fix kernel-doc descriptions of non-static functions
Fix kernel-doc descriptions of the two non-static functions. This also
gets rid of the rest of the warnings on W=1 build.

Reported-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
2021-02-04 10:38:37 +03:00
Mika Westerberg
9c3db0b7b2 thunderbolt: ctl: Fix kernel-doc descriptions of non-static functions
Fix kernel-doc descriptions of all non-static functions and struct
tb_cfg. Gets rid of several warnings on W=1 builds too.

Reported-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Lee Jones <lee.jones@linaro.org>
2021-02-04 10:38:37 +03:00
Mario Limonciello
4d395c5e74 thunderbolt: Fix possible NULL pointer dereference in tb_acpi_add_link()
When we walk up the device hierarchy in tb_acpi_add_link() make sure we
break the loop if the device has no parent. Otherwise we may crash the
kernel by dereferencing a NULL pointer.

Fixes: b2be2b05cf ("thunderbolt: Create device links from ACPI description")
Cc: stable@vger.kernel.org
Signed-off-by: Mario Limonciello <mario.limonciello@dell.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 15:30:57 +03:00
Lee Jones
2c2a2327bd thunderbolt: switch: Fix function name in the header
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/switch.c:1322: warning: expecting prototype for reset_switch(). Prototype was for tb_switch_reset() instead

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:57:06 +03:00
Lee Jones
a27ea0dfc1 thunderbolt: tunnel: Fix misspelling of 'receive_path'
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/tunnel.c:841: warning: Function parameter or member 'receive_path' not described in 'tb_tunnel_alloc_dma'
 drivers/thunderbolt/tunnel.c:841: warning: Excess function parameter 'reveive_path' description in 'tb_tunnel_alloc_dma'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:57:06 +03:00
Lee Jones
af6bd59ea5 thunderbolt: icm: Fix a couple of formatting issues
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/icm.c:122: warning: Function parameter or member 'xdomain_connected' not described in 'icm'
 drivers/thunderbolt/icm.c:122: warning: Function parameter or member 'xdomain_disconnected' not described in 'icm'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:55:01 +03:00
Lee Jones
47ba5ae46b thunderbolt: switch: Demote a bunch of non-conformant kernel-doc headers
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/switch.c:730: warning: Function parameter or member 'port' not described in 'tb_init_port'
 drivers/thunderbolt/switch.c:1348: warning: Function parameter or member 'sw' not described in 'tb_plug_events_active'
 drivers/thunderbolt/switch.c:1348: warning: Function parameter or member 'active' not described in 'tb_plug_events_active'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[ mw: Demote only static functions ]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:52:24 +03:00
Lee Jones
877e50b358 thunderbolt: tb: Kernel-doc function headers should document their parameters
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/tb.c:535: warning: Function parameter or member 'sw' not described in 'tb_scan_switch'
 drivers/thunderbolt/tb.c:551: warning: Function parameter or member 'port' not described in 'tb_scan_port'
 drivers/thunderbolt/tb.c:711: warning: Function parameter or member 'tb' not described in 'tb_free_invalid_tunnels'
 drivers/thunderbolt/tb.c:726: warning: Function parameter or member 'sw' not described in 'tb_free_unplugged_children'
 drivers/thunderbolt/tb.c:1129: warning: Function parameter or member 'work' not described in 'tb_handle_hotplug'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'tb' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'type' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'buf' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: Function parameter or member 'size' not described in 'tb_handle_event'
 drivers/thunderbolt/tb.c:1239: warning: expecting prototype for tb_schedule_hotplug_handler(). Prototype was for tb_handle_event() instead

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:44:24 +03:00
Lee Jones
a7bfb27bee thunderbolt: nhi: Demote some non-conformant kernel-doc headers
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/nhi.c:53: warning: Function parameter or member 'ring' not described in 'ring_interrupt_active'
 drivers/thunderbolt/nhi.c:53: warning: Function parameter or member 'active' not described in 'ring_interrupt_active'
 drivers/thunderbolt/nhi.c:114: warning: Function parameter or member 'nhi' not described in 'nhi_disable_interrupts'
 drivers/thunderbolt/nhi.c:191: warning: Function parameter or member 'ring' not described in 'ring_write_descriptors'
 drivers/thunderbolt/nhi.c:225: warning: Function parameter or member 'work' not described in 'ring_work'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[ mw: Demote only static functions ]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:41:22 +03:00
Lee Jones
925a2af9b3 thunderbolt: xdomain: Fix 'tb_unregister_service_driver()'s 'drv' param
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/xdomain.c:678: warning: Function parameter or member 'drv' not described in 'tb_unregister_service_driver'
 drivers/thunderbolt/xdomain.c:678: warning: Excess function parameter 'xdrv' description in 'tb_unregister_service_driver'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jesper Dangaard Brouer <hawk@kernel.org>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: linux-usb@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: bpf@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:32:29 +03:00
Lee Jones
ff48bc4477 thunderbolt: eeprom: Demote non-conformant kernel-doc headers to standard comment blocks
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/eeprom.c:19: warning: Function parameter or member 'sw' not described in 'tb_eeprom_ctl_write'
 drivers/thunderbolt/eeprom.c:19: warning: Function parameter or member 'ctl' not described in 'tb_eeprom_ctl_write'
 drivers/thunderbolt/eeprom.c:27: warning: Function parameter or member 'sw' not described in 'tb_eeprom_ctl_read'
 drivers/thunderbolt/eeprom.c:27: warning: Function parameter or member 'ctl' not described in 'tb_eeprom_ctl_read'
 drivers/thunderbolt/eeprom.c:27: warning: expecting prototype for tb_eeprom_ctl_write(). Prototype was for tb_eeprom_ctl_read() instead
 drivers/thunderbolt/eeprom.c:43: warning: Function parameter or member 'sw' not described in 'tb_eeprom_active'
 drivers/thunderbolt/eeprom.c:43: warning: Function parameter or member 'enable' not described in 'tb_eeprom_active'
 drivers/thunderbolt/eeprom.c:73: warning: Function parameter or member 'sw' not described in 'tb_eeprom_transfer'
 drivers/thunderbolt/eeprom.c:73: warning: Function parameter or member 'ctl' not described in 'tb_eeprom_transfer'
 drivers/thunderbolt/eeprom.c:73: warning: Function parameter or member 'direction' not described in 'tb_eeprom_transfer'
 drivers/thunderbolt/eeprom.c:97: warning: Function parameter or member 'sw' not described in 'tb_eeprom_out'
 drivers/thunderbolt/eeprom.c:97: warning: Function parameter or member 'val' not described in 'tb_eeprom_out'
 drivers/thunderbolt/eeprom.c:117: warning: Function parameter or member 'sw' not described in 'tb_eeprom_in'
 drivers/thunderbolt/eeprom.c:117: warning: Function parameter or member 'val' not described in 'tb_eeprom_in'
 drivers/thunderbolt/eeprom.c:138: warning: Function parameter or member 'sw' not described in 'tb_eeprom_get_drom_offset'
 drivers/thunderbolt/eeprom.c:138: warning: Function parameter or member 'offset' not described in 'tb_eeprom_get_drom_offset'
 drivers/thunderbolt/eeprom.c:170: warning: Function parameter or member 'sw' not described in 'tb_eeprom_read_n'
 drivers/thunderbolt/eeprom.c:170: warning: Function parameter or member 'offset' not described in 'tb_eeprom_read_n'
 drivers/thunderbolt/eeprom.c:170: warning: Function parameter or member 'val' not described in 'tb_eeprom_read_n'
 drivers/thunderbolt/eeprom.c:170: warning: Function parameter or member 'count' not described in 'tb_eeprom_read_n'
 drivers/thunderbolt/eeprom.c:383: warning: Function parameter or member 'sw' not described in 'tb_drom_parse_entries'
 drivers/thunderbolt/eeprom.c:417: warning: Function parameter or member 'sw' not described in 'tb_drom_copy_efi'
 drivers/thunderbolt/eeprom.c:417: warning: Function parameter or member 'size' not described in 'tb_drom_copy_efi'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[ mw: Demote only static functions ]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 13:20:59 +03:00
Lee Jones
aa60825391 thunderbolt: ctl: Demote non-conformant kernel-doc headers
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/ctl.c:38: warning: expecting prototype for struct tb_cfg. Prototype was for struct tb_ctl instead
 drivers/thunderbolt/ctl.c:350: warning: Function parameter or member 'ctl' not described in 'tb_ctl_tx'
 drivers/thunderbolt/ctl.c:350: warning: Function parameter or member 'data' not described in 'tb_ctl_tx'
 drivers/thunderbolt/ctl.c:350: warning: Function parameter or member 'len' not described in 'tb_ctl_tx'
 drivers/thunderbolt/ctl.c:350: warning: Function parameter or member 'type' not described in 'tb_ctl_tx'
 drivers/thunderbolt/ctl.c:350: warning: expecting prototype for tb_cfg_tx(). Prototype was for tb_ctl_tx() instead
 drivers/thunderbolt/ctl.c:383: warning: Function parameter or member 'ctl' not described in 'tb_ctl_handle_event'
 drivers/thunderbolt/ctl.c:383: warning: Function parameter or member 'type' not described in 'tb_ctl_handle_event'
 drivers/thunderbolt/ctl.c:383: warning: Function parameter or member 'pkg' not described in 'tb_ctl_handle_event'
 drivers/thunderbolt/ctl.c:383: warning: Function parameter or member 'size' not described in 'tb_ctl_handle_event'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[ mw: Demote only static functions ]
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 12:55:28 +03:00
Lee Jones
4366979fdd thunderbolt: cap: Fix kernel-doc formatting issue
Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/cap.c:189: warning: Function parameter or member 'sw' not described in 'tb_switch_find_cap'

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 12:33:18 +03:00
Lee Jones
f679a41faf thunderbolt: dma_port: Check 'dma_port_flash_write_block()'s return value
... and take the error path if it fails.

Fixes the following W=1 kernel build warning(s):

 drivers/thunderbolt/dma_port.c: In function ‘dma_port_flash_write_block’:
 drivers/thunderbolt/dma_port.c:331:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]

Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: linux-usb@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-28 12:33:06 +03:00
Mika Westerberg
3da88be249 thunderbolt: Add support for de-authorizing devices
In some cases it is useful to be able de-authorize devices. For example
if user logs out the userspace can have a policy that disconnects PCIe
devices until logged in again. This is only possible for software based
connection manager as it directly controls the tunnels.

For this reason make the authorized attribute accept writing 0 which
makes the software connection manager to tear down the corresponding
PCIe tunnel. Userspace can check if this is supported by reading a new
domain attribute deauthorization, that holds 1 in that case.

While there correct tb_domain_approve_switch() kernel-doc and
description of authorized attribute to mention that it is only about
PCIe tunnels.

Cc: Christian Kellner <christian@kellner.me>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-01-15 10:53:06 +03:00
Mika Westerberg
fdb0887c5a thunderbolt: Start lane initialization after sleep
USB4 spec says that for TBT3 compatible device routers the connection
manager needs to set SLI (Start Lane Initialization) to get the lanes
that were not connected back to functional state after sleep. Same needs
to be done if the link was XDomain.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-01-11 17:15:42 +03:00
Rikard Falkeborn
6889e00f0e thunderbolt: Constify static attribute_group structs
The only usage of these is to put their addresses in arrays of pointers
to const attribute_groups. Make them const to allow the compiler to put
them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2021-01-11 17:13:48 +03:00
Mika Westerberg
c14556fc0c thunderbolt: Drop duplicated 0x prefix from format string
The tb_dbg() call is using %#x that already adds the 0x prefix so don't
duplicate it.

Fixes: 9039387e16 ("thunderbolt: Add USB4 router operation proxy for firmware connection manager")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Yehezkel Bernat <YehezkelShB@gmail.com>
2021-01-07 15:14:44 +03:00
Tian Tao
82096ecf58 thunderbolt: Use kmemdup instead of kzalloc and memcpy
Fixes coccicheck warning:
drivers/thunderbolt/dma_test.c:302:13-20: WARNING opportunity for kmemdup.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-12-28 12:41:53 +03:00
Greg Kroah-Hartman
3d41137801 thunderbolt: Changes for v5.11 merge window
This includes following Thunderbolt/USB4 changes for v5.11 merge window:
 
   * DMA traffic test driver
 
   * USB4 router NVM upgrade improvements
 
   * USB4 router operations proxy implementation available in the recent
     Intel Connection Manager firmwares
 
   * Support for Intel Maple Ridge discrete Thunderbolt 4 controller
 
   * A couple of cleanups and minor improvements.
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Merge tag 'thunderbolt-for-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next

Mika writes:

thunderbolt: Changes for v5.11 merge window

This includes following Thunderbolt/USB4 changes for v5.11 merge window:

  * DMA traffic test driver

  * USB4 router NVM upgrade improvements

  * USB4 router operations proxy implementation available in the recent
    Intel Connection Manager firmwares

  * Support for Intel Maple Ridge discrete Thunderbolt 4 controller

  * A couple of cleanups and minor improvements.

* tag 'thunderbolt-for-v5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (22 commits)
  thunderbolt: Add support for Intel Maple Ridge
  thunderbolt: Add USB4 router operation proxy for firmware connection manager
  thunderbolt: Move constants for USB4 router operations to tb_regs.h
  thunderbolt: Add connection manager specific hooks for USB4 router operations
  thunderbolt: Pass TX and RX data directly to usb4_switch_op()
  thunderbolt: Pass metadata directly to usb4_switch_op()
  thunderbolt: Perform USB4 router NVM upgrade in two phases
  thunderbolt: Return -ENOTCONN when ERR_CONN is received
  thunderbolt: Keep the parent runtime resumed for a while on device disconnect
  thunderbolt: Log adapter numbers in decimal in path activation/deactivation
  thunderbolt: Log which connection manager implementation is used
  thunderbolt: Move max_boot_acl field to correct place in struct icm
  MAINTAINERS: Add Isaac as maintainer of Thunderbolt DMA traffic test driver
  thunderbolt: Add DMA traffic test driver
  thunderbolt: Add support for end-to-end flow control
  thunderbolt: Make it possible to allocate one directional DMA tunnel
  thunderbolt: Create debugfs directory automatically for services
  thunderbolt: Add functions for enabling and disabling lane bonding on XDomain
  thunderbolt: Add link_speed and link_width to XDomain
  thunderbolt: Create XDomain devices for loops back to the host
  ...
2020-12-08 13:41:45 +01:00
Mika Westerberg
db0746e339 thunderbolt: Add support for Intel Maple Ridge
Maple Ridge is first discrete USB4 host controller from Intel. It comes
with firmware based connection manager and the flows are similar as used
in Intel Titan Ridge.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
9039387e16 thunderbolt: Add USB4 router operation proxy for firmware connection manager
Intel Maple Ridge and Tiger Lake connection manager firmware implements
a USB4 router operation proxy that should be used instead of direct
register access to avoid races with the firmware. This is supported in
all firmwares where the protocol version field returned in the driver
ready response is 3 (or higher).

This adds the USB4 router proxy operations support to the driver so that
we first check the protocol version and if it is 3 (or higher) the USB4
router operation is run through the firmware provided proxy. Otherwise
the native version is used.

Most USB4 router proxy operations are pretty straightforward except
NVM_AUTH where the firmware only responds once the router is restarted
but before it sends device connected notification. To support this we
split the operation so that the reply is received asynchronously and
stored to struct icm. This last reply is then returned in
icm_usb4_switch_nvm_authenticate_status() if available.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
579f14217c thunderbolt: Move constants for USB4 router operations to tb_regs.h
We are going to use these in subsequent patch so make them available
outside of usb4.c.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
9490f71167 thunderbolt: Add connection manager specific hooks for USB4 router operations
Intel USB4 host routers that run the firmware based connection manager
(ICM) may implement a proxy for USB4 router operations. This is to avoid
the firmware to race with the OS driver, as both may need to run these
operations.

This adds two new connection manager specific callbacks which, if
provided, get called instead of the native USB4 router operation.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
83bab44ada thunderbolt: Pass TX and RX data directly to usb4_switch_op()
We are going to make usb4_switch_op() to match better the corresponding
firmware (ICM) USB4 router operation proxy interface, so that we can use
either based on the connection manager implementation.

For this reason rename usb4_switch_op() to __usb4_switch_op() that
provides the most complete interface. Then make usb4_switch_op() and
usb4_switch_op_data() call it with correct set of parameters and update
the callers accordingly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
fe265a0631 thunderbolt: Pass metadata directly to usb4_switch_op()
We are going to make usb4_switch_op() to match better the corresponding
firmware (ICM) USB4 router operation proxy interface, so that we can use
either based on the connection manager implementation. For this reason
pass metadata directly to usb4_switch_op().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
661b19473b thunderbolt: Perform USB4 router NVM upgrade in two phases
The currect code expects that the router returns back the status of the
NVM authentication immediately. When tested against a real USB4 device
what happens is that the router is reset and only after that the result
is updated in the ROUTER_CS_26 register status field. This also seems to
align better what the spec suggests.

For this reason do the same what we already do with the Thunderbolt 3
devices and perform the NVM upgrade in two phases. First start the
NVM_AUTH router operation and once the router is added back after the
reset read the status in ROUTER_CS_26 and expose it to the userspace
accordingly.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
463e48fa54 thunderbolt: Return -ENOTCONN when ERR_CONN is received
This allows the calling code to distinguish if the error was due to
ERR_CONN (adapter is disconneced or disabled) or something else. Will be
needed in USB4 router NVM update in the following patch.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:24 +03:00
Mika Westerberg
b658eb9d90 thunderbolt: Keep the parent runtime resumed for a while on device disconnect
When doing device firmware upgrade the device will disconnect for a
while and then reconnect back. Keep the parent device (and the whole
domain) powered for a while so we don't need to runtime resume
immediately when the device is connected back after the device upgrade
completes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:23 +03:00
Mika Westerberg
a359525897 thunderbolt: Log adapter numbers in decimal in path activation/deactivation
This makes it consistent with other debug logs that already are using
decimal number for adapters (ports).

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:23 +03:00
Mika Westerberg
e0258805d7 thunderbolt: Log which connection manager implementation is used
This makes it easier to figure out whether the driver is using firmware
or software based connection manager implementation.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
2020-11-30 14:39:23 +03:00