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>
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>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYS9+Tw8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ymqyQCgxWjp4VD9Ycbz1XsHRIkkERWj6WgAnRe4mCpG
n5csYXATbYUD0UdH0hru
=xZCV
-----END PGP SIGNATURE-----
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
...
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.
-----BEGIN PGP SIGNATURE-----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=1bPR
-----END PGP SIGNATURE-----
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
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>
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>
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>
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>
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>
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>
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>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYOM3EA8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ynGewCeMg7YvtCnqFBNebC+GfKpFTgWxO4AnAppjSrZ
RPGQgfZdWmx7daCXWbSK
=u68a
-----END PGP SIGNATURE-----
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
...
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
-----BEGIN PGP SIGNATURE-----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=5QAv
-----END PGP SIGNATURE-----
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
...
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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.
-----BEGIN PGP SIGNATURE-----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=RzJl
-----END PGP SIGNATURE-----
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()
...
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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.
-----BEGIN PGP SIGNATURE-----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=pzr4
-----END PGP SIGNATURE-----
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
...
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
... 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>
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>
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>
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>
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>
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.
-----BEGIN PGP SIGNATURE-----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=+RXF
-----END PGP SIGNATURE-----
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
...
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
This makes the kernel-doc to match the ordering and also this is better
place for it, not between upstream_port and vnd_cap that are used
together.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Paulian reported a crash that happens when a dock is unplugged during
hibernation:
[78436.228217] thunderbolt 0-1: device disconnected
[78436.228365] BUG: kernel NULL pointer dereference, address: 00000000000001e0
...
[78436.228397] RIP: 0010:icm_free_unplugged_children+0x109/0x1a0
...
[78436.228432] Call Trace:
[78436.228439] icm_rescan_work+0x24/0x30
[78436.228444] process_one_work+0x1a3/0x3a0
[78436.228449] worker_thread+0x30/0x370
[78436.228454] ? process_one_work+0x3a0/0x3a0
[78436.228457] kthread+0x13d/0x160
[78436.228461] ? kthread_park+0x90/0x90
[78436.228465] ret_from_fork+0x1f/0x30
This happens because remove_unplugged_switch() calls tb_switch_remove()
that releases the memory pointed by sw so the following lines reference
to a memory that might be released already.
Fix this by saving pointer to the parent device before calling
tb_switch_remove().
Reported-by: Paulian Bogdan Marinca <paulian@marinca.net>
Fixes: 4f7c2e0d87 ("thunderbolt: Make sure device runtime resume completes before taking domain lock")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This driver allows sending DMA traffic over XDomain connection.
Specifically over a loopback connection using either a Thunderbolt/USB4
cable that is connected back to the host router port, or a special
loopback dongle that has RX and TX lines crossed. This can be useful at
manufacturing floor to check whether Thunderbolt/USB4 ports are
functional.
The driver exposes debugfs directory under the XDomain service that can
be used to configure the driver, start the test and check the results.
If a loopback dongle is used the steps to send and receive 1000 packets
can be done like:
# modprobe thunderbolt_dma_test
# echo 1000 > /sys/kernel/debug/thunderbolt/<service_id>/dma_test/packets_to_receive
# echo 1000 > /sys/kernel/debug/thunderbolt/<service_id>/dma_test/packets_to_send
# echo 1 > /sys/kernel/debug/thunderbolt/<service_id>/dma_test/test
# cat /sys/kernel/debug/thunderbolt/<service_id>/dma_test/status
When a cable is connected back to host then there are two Thunderbolt
services, one is configured for receiving (does not matter which one):
# modprobe thunderbolt_dma_test
# echo 1000 > /sys/kernel/debug/thunderbolt/<service_a>/dma_test/packets_to_receive
# echo 1 > /sys/kernel/debug/thunderbolt/<service_a>/dma_test/test
The other one for sending:
# echo 1000 > /sys/kernel/debug/thunderbolt/<service_b>/dma_test/packets_to_send
# echo 1 > /sys/kernel/debug/thunderbolt/<service_b>/dma_test/test
Results can be read from both services status attributes.
Signed-off-by: Isaac Hazan <isaac.hazan@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
USB4 spec defines end-to-end (E2E) flow control that can be used between
hosts to prevent overflow of a RX ring. We previously had this partially
implemented but that code was removed with commit 53f13319d1
("thunderbolt: Get rid of E2E workaround") with the idea that we add it
back properly if there ever is need. Now that we are going to add DMA
traffic test driver (in subsequent patches) this can be useful.
For this reason we modify tb_ring_alloc_rx/tx() so that they accept
RING_FLAG_E2E and configure the hardware ring accordingly. The RX side
also requires passing TX HopID (e2e_tx_hop) used in the credit grant
packets.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With DMA tunnels it is possible that the service using it does not
require bi-directional paths so make RX and TX optional (but of course
one of them needs to be set).
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This allows service drivers to use it as parent directory if they need
to add their own debugfs entries.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These can be used by service drivers to enable and disable lane bonding
as needed.
Signed-off-by: Isaac Hazan <isaac.hazan@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link speed and link width are needed for checking expected values in
case of using a loopback service.
Signed-off-by: Isaac Hazan <isaac.hazan@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
It is perfectly possible to have loops back from the routers to the
host, or even from one host port to another. Instead of ignoring these,
we create XDomain devices for each. This allows creating services such
as DMA traffic test that is used in manufacturing for example.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We are going to represent loops back to the host also as XDomains and
they all have the same (host) UUID, so finding them needs to use route
string instead. This also requires that we check if the XDomain device
is added to the bus before its properties can be updated. Otherwise the
remote UUID might not be populated yet.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These fields are marked as vendor defined in the USB4 spec and should
not be modified by the software, so only clear them when we are dealing
with pre-USB4 hardware.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Intel Tiger Lake-H has the same Thunderbolt/USB4 controller as Tiger
Lake-LP. Add the Tiger Lake-H PCI IDs to the driver list of supported
devices.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Only USB4 lane 0 adapter has the USB4 port capability for wakes so only
program wakes on such adapters.
Fixes: b2911a593a ("thunderbolt: Enable wakes from system suspend")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Some calls in the debugfs interface are made to the linux/uaccess.h header,
but the header is not referenced. So, for x86_64 architectures, this
dependency seems to be pulled in elsewhere, which leads to a successful
compilation. However, on arm/arm64 architectures, it was found to error out
on implicit declarations.
This change fixes the implicit declaration error by adding the
linux/uaccess.h header.
Fixes: 54e418106c ("thunderbolt: Add debugfs interface")
Signed-off-by: Casey Bowman <casey.g.bowman@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The svc->key field is not released as it should be if ida_simple_get()
fails so fix that.
Fixes: 9aabb68568 ("thunderbolt: Fix to check return value of ida_simple_get")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
ring_request_msix() misses to call ida_simple_remove() in an error path.
Add a label 'err_ida_remove' and jump to it.
Fixes: 046bee1f9a ("thunderbolt: Add MSI-X support")
Cc: stable@vger.kernel.org
Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This includes following Thunderbolt/USB4 changes for v5.10 merge window:
* A couple of optimizations around Tiger Lake force power logic and
NHI (Native Host Interface) LC (Link Controller) mailbox command
processing
* Power management improvements for Software Connection Manager
* Debugfs support
* Allow KUnit tests to be enabled also when Thunderbolt driver is
configured as module.
* Few minor cleanups and fixes
All these have been in linux-next with no reported issues.
-----BEGIN PGP SIGNATURE-----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=KvWM
-----END PGP SIGNATURE-----
Merge tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next
Mika writes:
thunderbolt: Changes for v5.10 merge window
This includes following Thunderbolt/USB4 changes for v5.10 merge window:
* A couple of optimizations around Tiger Lake force power logic and
NHI (Native Host Interface) LC (Link Controller) mailbox command
processing
* Power management improvements for Software Connection Manager
* Debugfs support
* Allow KUnit tests to be enabled also when Thunderbolt driver is
configured as module.
* Few minor cleanups and fixes
All these have been in linux-next with no reported issues.
* tag 'thunderbolt-for-v5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (37 commits)
thunderbolt: Capitalize comment on top of QUIRK_FORCE_POWER_LINK_CONTROLLER
thunderbolt: Correct tb_check_quirks() kernel-doc
thunderbolt: Log correct zeroX entries in decode_error()
thunderbolt: Handle ERR_LOCK notification
thunderbolt: Use "if USB4" instead of "depends on" in Kconfig
thunderbolt: Allow KUnit tests to be built also when CONFIG_USB4=m
thunderbolt: Only stop control channel when entering freeze
thunderbolt: debugfs: Fix uninitialized return in counters_write()
thunderbolt: Add debugfs interface
thunderbolt: No need to warn in TB_CFG_ERROR_INVALID_CONFIG_SPACE
thunderbolt: Introduce tb_switch_is_tiger_lake()
thunderbolt: Introduce tb_switch_is_ice_lake()
thunderbolt: Check for Intel vendor ID when identifying controller
thunderbolt: Introduce tb_port_is_nhi()
thunderbolt: Introduce tb_switch_next_cap()
thunderbolt: Introduce tb_port_next_cap()
thunderbolt: Move struct tb_cap_any to tb_regs.h
thunderbolt: Add runtime PM for Software CM
thunderbolt: Create device links from ACPI description
ACPI: Export acpi_get_first_physical_node() to modules
...
There was copy & paste error so it always printed value of pkg->zero1.
Also use tb_ctl_warn() here, no need to print backtrace.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
If the USB4 router downstream port is locked, sending configuration
packet to a router below it causes ERR_LOCK to be sent. Instead of warn
splat about unknown error we log the error (just warning level) and
return -EACCESS instead. The idea is that we may want to do something
when such error code is received, like perform unlock.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This groups the USB4 options more nicely, and also does not require that
every config option lists explicit depends on USB4.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This adds a bit more build coverage for the tests even though these are
not expected to be enabled by normal users and distros. In order to make
this working we need to open-code kunit_test_suite() and call the
relevant functions directly in the driver init/exit hook.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
According to the kernel power management documentation freeze phase
should only quiesce the device, no need to configure wakes or put it to
low power state. For this reason we simply stop the control channel and
in case of Software Connection Manager also mark the hotplug disabled.
This should align the driver better with the PM framework expectations.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
One more fix that makes ASUS PA27AC Thunderbolt 3 monitor work more
reliably.
This has been in linux-next with no reported issues.
-----BEGIN PGP SIGNATURE-----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=sgTO
-----END PGP SIGNATURE-----
Merge tag 'thunderbolt-for-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-linus
Mika writes:
thunderbolt: Fix for v5.9-rc6
One more fix that makes ASUS PA27AC Thunderbolt 3 monitor work more
reliably.
This has been in linux-next with no reported issues.
* tag 'thunderbolt-for-v5.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
thunderbolt: Retry DROM read once if parsing fails
If the first line is in an invalid format then the "ret" value is
uninitialized. We should return -EINVAL instead.
Fixes: 54e418106c ("thunderbolt: Add debugfs interface")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Kai-Heng reported that sometimes DROM parsing of ASUS PA27AC Thunderbolt 3
monitor fails. This makes the driver to fail to add the device so only
DisplayPort tunneling is functional.
It is not clear what exactly happens but waiting for 100 ms and retrying
the read seems to work this around so we do that here.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206493
Reported-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This adds debugfs interface that can be used for debugging possible
issues in hardware/software. It exposes router and adapter config spaces
through files like this:
/sys/kernel/debug/thunderbolt/<DEVICE>/regs
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT1>/regs
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT1>/path
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT1>/counters
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT2>/regs
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT2>/path
/sys/kernel/debug/thunderbolt/<DEVICE>/<PORT2>/counters
...
The "regs" is either the router or port configuration space register
dump. The "path" is the port path configuration space and "counters" is
the optional counters configuration space.
These files contains one register per line so it should be easy to use
normal filtering tools to find the registers of interest if needed.
The router and adapter regs file becomes writable when
CONFIG_USB4_DEBUGFS_WRITE is enabled (which is not supposed to be done
in production systems) and in this case the developer can write "offset
value" lines there to modify the hardware directly. For convenience this
also supports the long format the read side produces (but ignores the
additional fields). The counters file can be written even when
CONFIG_USB4_DEBUGFS_WRITE is not enabled and it is only used to clear
the counter values.
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This may be returned for example when accessing some of the vendor
specific capabilities. It is not fatal by any means so instead of WARN()
just log it as debug level. The caller gets error back anyway and is
expected to handle it accordingly.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is needed to differentiate Tiger Lake from other controllers.
Signed-off-by: Gil Fine <gil.fine@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is needed to differentiate Ice Lake from other controllers.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
With USB4 there will be other vendors so make sure the current checks
for different Intel controllers will not accidentally match those.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is useful if one needs to check if adapter (port) is the host
interface (NHI). Make tb_port_alloc_hopid() take advantage of this.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is similar to tb_port_next_cap() but instead allows walking
capability list of a switch (router). Convert tb_switch_find_cap() and
tb_switch_find_vse_cap() to use this as well.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This function is useful for walking port config space (adapter)
capability lists. Convert the tb_port_find_cap() to use this as well.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This structure will be needed by the debugfs implementation so make it
available outside of cap.c.
While there add kernel-doc comments to the structure.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This adds runtime PM support for the Software Connection Manager parts
of the driver. This allows to save power when either there is no device
attached at all or there is a device attached and all following
conditions are true:
- Tunneled PCIe root/downstream ports are runtime suspended
- Tunneled USB3 ports are runtime suspended
- No active DisplayPort stream
- No active XDomain connection
For the first two we take advantage of device links that were added in
previous patch. Difference for the system sleep case is that we also
enable wakes when something is geting plugged in/out of the Thunderbolt
ports.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
The new way to describe relationship between tunneled ports and USB4 NHI
(Native Host Interface) is with ACPI _DSD looking like below for a PCIe
downstream port:
Scope (\_SB.PCI0)
{
Device (NHI0) { } // Thunderbolt NHI
Device (DSB0) // Hotplug downstream port
{
Name (_DSD, Package () {
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package () {
Package () {"usb4-host-interface", \_SB.PCI0.NHI0},
...
}
})
}
}
This is "documented" in these [1] USB-IF slides and being used on
systems that ship with Windows.
The _DSD can be added to tunneled USB3 and PCIe ports, and is needed to
make sure the USB4 NHI is resumed before any of the tunneled ports so
the protocol tunnels get established properly before the actual port
itself is resumed. Othwerwise the USB/PCI core find the link may not be
established and starts tearing down the device stack.
This parses the ACPI description each time NHI is probed and tries to
find devices that has the property and it references the NHI in
question. For each matching device a device link from that device to the
NHI is created.
Since USB3 ports themselves do not get runtime suspended with the parent
device (hub) we do not add the link from the USB3 port to USB4 NHI but
instead we add the link from the xHCI device. This makes the device link
usable for runtime PM as well.
[1] https://www.usb.org/sites/default/files/D1T2-2%20-%20USB4%20on%20Windows.pdf
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Linus Torvalds