Merge branch 'net-ipa-I-O-map-SMEM-and-IMEM'

Alex Elder says:

====================
net: ipa: I/O map SMEM and IMEM

This series adds the definition of two memory regions that must be
mapped for IPA

Merge branch 'net-ipa-I-O-map-SMEM-and-IMEM'

Alex Elder says:

====================
net: ipa: I/O map SMEM and IMEM

This series adds the definition of two memory regions that must be
mapped for IPA to access through an SMMU. It requires the SMMU to
be defined in the IPA node in the SoC's Device Tree file.

There is no change since version 1 to the content of the code in
these patches, *however* this time the first patch is an update to
the binding definition rather than an update to a DTS file.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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dt-bindings: net: add IPA iommus property

The IPA accesses "IMEM" and main system memory through an SMMU, so
its DT node requires an iommus property to define range of stream IDs
it uses.

Signed-of

dt-bindings: net: add IPA iommus property

The IPA accesses "IMEM" and main system memory through an SMMU, so
its DT node requires an iommus property to define range of stream IDs
it uses.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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dt-bindings: Remove cases of 'allOf' containing a '$ref'

json-schema versions draft7 and earlier have a weird behavior in that
any keywords combined with a '$ref' are ignored (silently). The correct

dt-bindings: Remove cases of 'allOf' containing a '$ref'

json-schema versions draft7 and earlier have a weird behavior in that
any keywords combined with a '$ref' are ignored (silently). The correct
form was to put a '$ref' under an 'allOf'. This behavior is now changed
in the 2019-09 json-schema spec and '$ref' can be mixed with other
keywords. The json-schema library doesn't yet support this, but the
tooling now does a fixup for this and either way works.

This has been a constant source of review comments, so let's change this
treewide so everyone copies the simpler syntax.

Scripted with ruamel.yaml with some manual fixups. Some minor whitespace
changes from the script.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de> # for I2C
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for-iio
Reviewed-by: Stephen Boyd <sboyd@kernel.org> # clock
Signed-off-by: Rob Herring <robh@kernel.org>

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Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Pull EFI changes for v5.8 from Ard Biesheuvel:

"- preliminary changes for RISC-V
- add support for setti

Merge tag 'efi-next' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/core

Pull EFI changes for v5.8 from Ard Biesheuvel:

"- preliminary changes for RISC-V
- add support for setting the resolution on the EFI framebuffer
- simplify kernel image loading for arm64
- Move .bss into .data via the linker script instead of relying on symbol
annotations.
- Get rid of __pure getters to access global variables
- Clean up the config table matching arrays"

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge branch 'topic/nhlt' into for-next

Merge NHLT init cleanup.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

Merge tag 'tegra-for-5.7-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into asoc-5.7

ASoC: tegra: Fixes for v5.7-rc3

This contains a couple of fixes that are needed to properly

Merge tag 'tegra-for-5.7-asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into asoc-5.7

ASoC: tegra: Fixes for v5.7-rc3

This contains a couple of fixes that are needed to properly reconfigure
the audio clocks on older Tegra devices.

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Merge branch 'fixes-v5.7' into fixes

Merge drm/drm-next into drm-misc-next

Backmerging required to pull topic/phy-compliance.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>

Merge drm/drm-next into drm-intel-next-queued

Backmerging in order to pull "topic/phy-compliance".

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Merge v5.7-rc1 into drm-misc-fixes

Start the new drm-misc-fixes cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a

Merge tag 'v5.7-rc1' into locking/kcsan, to resolve conflicts and refresh

Resolve these conflicts:

arch/x86/Kconfig
arch/x86/kernel/Makefile

Do a minor "evil merge" to move the KCSAN entry up a bit by a few lines
in the Kconfig to reduce the probability of future conflicts.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from David Miller:
"Highlights:

1) Fix the iwlwifi regression, from Johannes Berg.

2) Support BSS

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from David Miller:
"Highlights:

1) Fix the iwlwifi regression, from Johannes Berg.

2) Support BSS coloring and 802.11 encapsulation offloading in
hardware, from John Crispin.

3) Fix some potential Spectre issues in qtnfmac, from Sergey
Matyukevich.

4) Add TTL decrement action to openvswitch, from Matteo Croce.

5) Allow paralleization through flow_action setup by not taking the
RTNL mutex, from Vlad Buslov.

6) A lot of zero-length array to flexible-array conversions, from
Gustavo A. R. Silva.

7) Align XDP statistics names across several drivers for consistency,
from Lorenzo Bianconi.

8) Add various pieces of infrastructure for offloading conntrack, and
make use of it in mlx5 driver, from Paul Blakey.

9) Allow using listening sockets in BPF sockmap, from Jakub Sitnicki.

10) Lots of parallelization improvements during configuration changes
in mlxsw driver, from Ido Schimmel.

11) Add support to devlink for generic packet traps, which report
packets dropped during ACL processing. And use them in mlxsw
driver. From Jiri Pirko.

12) Support bcmgenet on ACPI, from Jeremy Linton.

13) Make BPF compatible with RT, from Thomas Gleixnet, Alexei
Starovoitov, and your's truly.

14) Support XDP meta-data in virtio_net, from Yuya Kusakabe.

15) Fix sysfs permissions when network devices change namespaces, from
Christian Brauner.

16) Add a flags element to ethtool_ops so that drivers can more simply
indicate which coalescing parameters they actually support, and
therefore the generic layer can validate the user's ethtool
request. Use this in all drivers, from Jakub Kicinski.

17) Offload FIFO qdisc in mlxsw, from Petr Machata.

18) Support UDP sockets in sockmap, from Lorenz Bauer.

19) Fix stretch ACK bugs in several TCP congestion control modules,
from Pengcheng Yang.

20) Support virtual functiosn in octeontx2 driver, from Tomasz
Duszynski.

21) Add region operations for devlink and use it in ice driver to dump
NVM contents, from Jacob Keller.

22) Add support for hw offload of MACSEC, from Antoine Tenart.

23) Add support for BPF programs that can be attached to LSM hooks,
from KP Singh.

24) Support for multiple paths, path managers, and counters in MPTCP.
From Peter Krystad, Paolo Abeni, Florian Westphal, Davide Caratti,
and others.

25) More progress on adding the netlink interface to ethtool, from
Michal Kubecek"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2121 commits)
net: ipv6: rpl_iptunnel: Fix potential memory leak in rpl_do_srh_inline
cxgb4/chcr: nic-tls stats in ethtool
net: dsa: fix oops while probing Marvell DSA switches
net/bpfilter: remove superfluous testing message
net: macb: Fix handling of fixed-link node
net: dsa: ksz: Select KSZ protocol tag
netdevsim: dev: Fix memory leak in nsim_dev_take_snapshot_write
net: stmmac: add EHL 2.5Gbps PCI info and PCI ID
net: stmmac: add EHL PSE0 & PSE1 1Gbps PCI info and PCI ID
net: stmmac: create dwmac-intel.c to contain all Intel platform
net: dsa: bcm_sf2: Support specifying VLAN tag egress rule
net: dsa: bcm_sf2: Add support for matching VLAN TCI
net: dsa: bcm_sf2: Move writing of CFP_DATA(5) into slicing functions
net: dsa: bcm_sf2: Check earlier for FLOW_EXT and FLOW_MAC_EXT
net: dsa: bcm_sf2: Disable learning for ASP port
net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge
net: dsa: b53: Prevent tagged VLAN on port 7 for 7278
net: dsa: b53: Restore VLAN entries upon (re)configuration
net: dsa: bcm_sf2: Fix overflow checks
hv_netvsc: Remove unnecessary round_up for recv_completion_cnt
...

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dt-bindings: soc: qcom: fix IPA binding

The definitions for the "qcom,smem-states" and "qcom,smem-state-names"
properties need to list their "$ref" under an "allOf" keyword.

In addition, fix two pr

dt-bindings: soc: qcom: fix IPA binding

The definitions for the "qcom,smem-states" and "qcom,smem-state-names"
properties need to list their "$ref" under an "allOf" keyword.

In addition, fix two problems in the example at the end:
- Use #include for header files that define needed symbolic values
- Terminate the line that includes the "ipa-shared" register space
name with a comma rather than a semicolon

Finally, update some white space in the example for better alignment.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge branch 'net-introduce-Qualcomm-IPA-driver'

Alex Elder says:

====================
net: introduce Qualcomm IPA driver (UPDATED)

This series presents the driver for the Qualcomm IP Accelerator

Merge branch 'net-introduce-Qualcomm-IPA-driver'

Alex Elder says:

====================
net: introduce Qualcomm IPA driver (UPDATED)

This series presents the driver for the Qualcomm IP Accelerator (IPA).

This is version 2 of this updated series. It includes the following
small changes since the previous version:
- Now based on net-next instead of v5.6-rc
- Config option now named CONFIG_QCOM_IPA
- Some minor cleanup in the GSI code
- Small change to replenish logic
- No longer depends on remoteproc bug fixes
What follows is the basically same explanation as was posted previously.

-Alex

I have posted earlier versions of this code previously, but it has
undergone quite a bit of development since the last time, so rather
than calling it "version 3" I'm just treating it as a new series
(indicating it's been updated in this message). The fast/data path
is the same as before. But the driver now (nearly) supports a
second platform, its transaction handling has been generalized
and improved, and modem activities are now handled in a more
unified way.

This series is available (based on net-next in branch "ipa_updated-v2"
in this git repository:
https://git.linaro.org/people/alex.elder/linux.git

The branch depends on other one other small patch that I sent out
for review earlier.
https://lore.kernel.org/lkml/20200306042302.17602-1-elder@linaro.org/

I want to address some of the discussion that arose last time.

First, there was the WWAN discussion. Here's the history:
- This was last posted nine months ago.
- Reviewers at that time favored developing a new WWAN subsystem that
would be used for managing devices like this. And the suggestion
was to not accept this driver until that could be developed.
- Along the way, Apple acquired much of Intel's modem business.
And as a result, the generic framework became less pressing.
- I did participate in the WWAN subsystem design however, and
although it went dormant for a while it's been resurrected:
https://lore.kernel.org/netdev/20200225100053.16385-1-johannes@sipsolutions.net/
- Unfortunately the proposed WWAN design was not an easy fit
with Qualcomm's integrated modem interfaces. Given that
rmnet is a supported link type for in the upstream "iproute2"
package (more on this below), I have opted not to integrate
with any WWAN subsystem.

So in summary, this driver does not integrate with a generic WWAN
framework. And I'd like it to be accepted upstream despite that.

Next, Arnd Bergmann had some concerns about flow control. (Note:
some of my discussions with Arnd about this were offline.) The
overall architecture here also involves the "rmnet" driver:
drivers/net/ethernet/qualcomm/rmnet

The rmnet driver presents a network device for use. It connects
with another network device presented, by the IPA driver. The
rmnet driver wraps (and unwraps) packets transferred to (and from)
the IPA driver with QMAP headers.

---------------
| rmnet_data0 | <-- "real" netdev
---------------
|| }- QMAP spoken here
--------------
| rmnet_ipa0 | <-- also netdev, transporting QMAP packets
--------------
||
--------------
( IPA hardware )
--------------

Arnd's concern was that the rmnet_data0 network device does not
have the benefit of information about the state of the underlying
IPA hardware in order to be effective in controlling TX flow.
The feared result is over-buffering of TX packets (bufferbloat).
I began working on some simple experiments to see whether (or how
much) his concern was warranted. But it turned out that completing
these experiments was much more work than had been hoped.

The rmnet driver is present in the upstream kernel. There is also
support for the rmnet link type in the upstream "ip" user space
command in the "iproute2" package. Changing the layering of rmnet
over IPA likely involves deprecating the rmnet driver and its
support in "iproute2". I would really rather not go down that
path.

There is precedent for this sort of layering of network devices
(L2TP, VLAN). And any architecture like this would suffer the
issues Arnd mentioned; the problem is not limited to rmnet and IPA.
I do think this is a problem worth solving, but the prudent thing
to do might be to try to solve it more generally.

So to summarize on this issue, this driver does not attempt to
change the way the rmnet and IPA drivers work together. And even
though I think Arnd's concerns warrant more investigation, I'd like
this driver to to be accepted upstream without any change to this
architecture.

Finally, a more technical description for the series, and some
acknowledgements to some people who contributed to it.

The IPA is a component present in some Qualcomm SoCs that allows
network functions such as aggregation, filtering, routing, and NAT
to be performed without active involvement of the main application
processor (AP).

In this initial patch series these advanced features are not
implemented. The IPA driver simply provides a network interface
that makes the modem's LTE network available in Linux. This initial
series supports only the Qualcomm SDM845 SoC. The Qualcomm SC7180
SoC is partially supported, and support for other platforms will
follow.

This code is derived from a driver developed by Qualcomm. A version
of the original source can be seen here:
https://source.codeaurora.org/quic/la/kernel/msm-4.9/tree
in the "drivers/platform/msm/ipa" directory. Many were involved in
developing this, but the following individuals deserve explicit
acknowledgement for their substantial contributions:

Abhishek Choubey
Ady Abraham
Chaitanya Pratapa
David Arinzon
Ghanim Fodi
Gidon Studinski
Ravi Gummadidala
Shihuan Liu
Skylar Chang
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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dt-bindings: soc: qcom: add IPA bindings

Add the binding definitions for the "qcom,ipa" device tree node.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Sig

dt-bindings: soc: qcom: add IPA bindings

Add the binding definitions for the "qcom,ipa" device tree node.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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