bus: mhi: ep: Add support for registering MHI endpoint controllers

This commit adds support for registering MHI endpoint controller drivers
with the MHI endpoint stack. MHI endpoint controller drive

bus: mhi: ep: Add support for registering MHI endpoint controllers

This commit adds support for registering MHI endpoint controller drivers
with the MHI endpoint stack. MHI endpoint controller drivers manage
the interaction with the host machines (such as x86). They are also the
MHI endpoint bus master in charge of managing the physical link between
the host and endpoint device. Eventhough the MHI spec is bus agnostic,
the current implementation is entirely based on PCIe bus.

The endpoint controller driver encloses all information about the
underlying physical bus like PCIe. The registration process involves
parsing the channel configuration and allocating an MHI EP device.

Channels used in the endpoint stack follows the perspective of the MHI
host stack. i.e.,

UL - From host to endpoint
DL - From endpoint to host

Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

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Merge tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
"Here is the big set of char/misc and other sm

Merge tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

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

Included in here are merges from driver subsystems which contain:

- iio driver updates and new drivers

- fsi driver updates

- fpga driver updates

- habanalabs driver updates and support for new hardware

- soundwire driver updates and new drivers

- phy driver updates and new drivers

- coresight driver updates

- icc driver updates

Individual changes include:

- mei driver updates

- interconnect driver updates

- new PECI driver subsystem added

- vmci driver updates

- lots of tiny misc/char driver updates

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

* tag 'char-misc-5.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (556 commits)
firmware: google: Properly state IOMEM dependency
kgdbts: fix return value of __setup handler
firmware: sysfb: fix platform-device leak in error path
firmware: stratix10-svc: add missing callback parameter on RSU
arm64: dts: qcom: add non-secure domain property to fastrpc nodes
misc: fastrpc: Add dma handle implementation
misc: fastrpc: Add fdlist implementation
misc: fastrpc: Add helper function to get list and page
misc: fastrpc: Add support to secure memory map
dt-bindings: misc: add fastrpc domain vmid property
misc: fastrpc: check before loading process to the DSP
misc: fastrpc: add secure domain support
dt-bindings: misc: add property to support non-secure DSP
misc: fastrpc: Add support to get DSP capabilities
misc: fastrpc: add support for FASTRPC_IOCTL_MEM_MAP/UNMAP
misc: fastrpc: separate fastrpc device from channel context
dt-bindings: nvmem: brcm,nvram: add basic NVMEM cells
dt-bindings: nvmem: make "reg" property optional
nvmem: brcm_nvram: parse NVRAM content into NVMEM cells
nvmem: dt-bindings: Fix the error of dt-bindings check
...

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bus: mhi: Move host MHI code to "host" directory

In preparation of the endpoint MHI support, let's move the host MHI code
to its own "host" directory and adjust the toplevel MHI Kconfig & Makefile.

bus: mhi: Move host MHI code to "host" directory

In preparation of the endpoint MHI support, let's move the host MHI code
to its own "host" directory and adjust the toplevel MHI Kconfig & Makefile.

While at it, let's also move the "pci_generic" driver to "host" directory
as it is a host MHI controller driver.

Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20220301160308.107452-5-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge remote-tracking branch 'net/master'

Merge branch 'next' into for-linus

Prepare input updates for 5.12 merge window.

Merge tag 'v5.11' into next

Merge with mainline to get latest APIs and device tree bindings.

Merge tag 'amba-make-remove-return-void' of https://git.pengutronix.de/git/ukl/linux into devel-stable

Tag for adaptions to struct amba_driver::remove changing prototype

Merge branch 'cpuidle-fix' into fixes

Merge drm/drm-next into drm-intel-gt-next

Backmerging to get a common base for merging topic branches between
drm-intel-next and drm-intel-gt-next.

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@l

Merge drm/drm-next into drm-intel-gt-next

Backmerging to get a common base for merging topic branches between
drm-intel-next and drm-intel-gt-next.

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

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

sync-up to not fall too much behind.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

Merge branch 'for-linus' into for-next

Back-merge of 5.11-devel branch for syncing the result changes.

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

Merge tag 'asoc-fix-v5.11-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.11

A collection of mostly driver specific fixes, plus a maintainers

Merge tag 'asoc-fix-v5.11-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.11

A collection of mostly driver specific fixes, plus a maintainership
update for TI and a fix for DAPM driver removal paths.

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

Staying in sync to drm-next, and to be able to pull ttm fixes.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

Merge tag 'v5.11-rc1' into spi-5.11

Linux 5.11-rc1

Merge tag 'v5.11-rc1' into regulator-5.11

Linux 5.11-rc1

Merge tag 'v5.11-rc1' into asoc-5.11

Linux 5.11-rc1

Merge remote-tracking branch 'torvalds/master' into perf/core

To pick up fixes and check what UAPI headers need to be synched.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Merge tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
"Here is the big char/misc driver update for 5.11-rc1.

Merge tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc driver updates from Greg KH:
"Here is the big char/misc driver update for 5.11-rc1.

Continuing the tradition of previous -rc1 pulls, there seems to be
more and more tiny driver subsystems flowing through this tree.

Lots of different things, all of which have been in linux-next for a
while with no reported issues:

- extcon driver updates

- habannalab driver updates

- mei driver updates

- uio driver updates

- binder fixes and features added

- soundwire driver updates

- mhi bus driver updates

- phy driver updates

- coresight driver updates

- fpga driver updates

- speakup driver updates

- slimbus driver updates

- various small char and misc driver updates"

* tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (305 commits)
extcon: max77693: Fix modalias string
extcon: fsa9480: Support TI TSU6111 variant
extcon: fsa9480: Rewrite bindings in YAML and extend
dt-bindings: extcon: add binding for TUSB320
extcon: Add driver for TI TUSB320
slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew()
siox: Make remove callback return void
siox: Use bus_type functions for probe, remove and shutdown
spmi: Add driver shutdown support
spmi: fix some coding style issues at the spmi core
spmi: get rid of a warning when built with W=1
uio: uio_hv_generic: use devm_kzalloc() for private data alloc
uio: uio_fsl_elbc_gpcm: use device-managed allocators
uio: uio_aec: use devm_kzalloc() for uio_info object
uio: uio_cif: use devm_kzalloc() for uio_info object
uio: uio_netx: use devm_kzalloc() for or uio_info object
uio: uio_mf624: use devm_kzalloc() for uio_info object
uio: uio_sercos3: use device-managed functions for simple allocs
uio: uio_dmem_genirq: finalize conversion of probe to devm_ handlers
uio: uio_dmem_genirq: convert simple allocations to device-managed
...

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Merge remote-tracking branch 'spi/for-5.10' into spi-linus

Merge remote-tracking branch 'asoc/for-5.10' into asoc-linus

Merge branches 'for-next/kvm-build-fix', 'for-next/va-refactor', 'for-next/lto', 'for-next/mem-hotplug', 'for-next/cppc-ffh', 'for-next/pad-image-header', 'for-next/zone-dma-default-32-bit', 'for-nex

Merge branches 'for-next/kvm-build-fix', 'for-next/va-refactor', 'for-next/lto', 'for-next/mem-hotplug', 'for-next/cppc-ffh', 'for-next/pad-image-header', 'for-next/zone-dma-default-32-bit', 'for-next/signal-tag-bits' and 'for-next/cmdline-extended' into for-next/core

* for-next/kvm-build-fix:
: Fix KVM build issues with 64K pages
KVM: arm64: Fix build error in user_mem_abort()

* for-next/va-refactor:
: VA layout changes
arm64: mm: don't assume struct page is always 64 bytes
Documentation/arm64: fix RST layout of memory.rst
arm64: mm: tidy up top of kernel VA space
arm64: mm: make vmemmap region a projection of the linear region
arm64: mm: extend linear region for 52-bit VA configurations

* for-next/lto:
: Upgrade READ_ONCE() to RCpc acquire on arm64 with LTO
arm64: lto: Strengthen READ_ONCE() to acquire when CONFIG_LTO=y
arm64: alternatives: Remove READ_ONCE() usage during patch operation
arm64: cpufeatures: Add capability for LDAPR instruction
arm64: alternatives: Split up alternative.h
arm64: uaccess: move uao_* alternatives to asm-uaccess.h

* for-next/mem-hotplug:
: Memory hotplug improvements
arm64/mm/hotplug: Ensure early memory sections are all online
arm64/mm/hotplug: Enable MEM_OFFLINE event handling
arm64/mm/hotplug: Register boot memory hot remove notifier earlier
arm64: mm: account for hotplug memory when randomizing the linear region

* for-next/cppc-ffh:
: Add CPPC FFH support using arm64 AMU counters
arm64: abort counter_read_on_cpu() when irqs_disabled()
arm64: implement CPPC FFH support using AMUs
arm64: split counter validation function
arm64: wrap and generalise counter read functions

* for-next/pad-image-header:
: Pad Image header to 64KB and unmap it
arm64: head: tidy up the Image header definition
arm64/head: avoid symbol names pointing into first 64 KB of kernel image
arm64: omit [_text, _stext) from permanent kernel mapping

* for-next/zone-dma-default-32-bit:
: Default to 32-bit wide ZONE_DMA (previously reduced to 1GB for RPi4)
of: unittest: Fix build on architectures without CONFIG_OF_ADDRESS
mm: Remove examples from enum zone_type comment
arm64: mm: Set ZONE_DMA size based on early IORT scan
arm64: mm: Set ZONE_DMA size based on devicetree's dma-ranges
of: unittest: Add test for of_dma_get_max_cpu_address()
of/address: Introduce of_dma_get_max_cpu_address()
arm64: mm: Move zone_dma_bits initialization into zone_sizes_init()
arm64: mm: Move reserve_crashkernel() into mem_init()
arm64: Force NO_BLOCK_MAPPINGS if crashkernel reservation is required
arm64: Ignore any DMA offsets in the max_zone_phys() calculation

* for-next/signal-tag-bits:
: Expose the FAR_EL1 tag bits in siginfo
arm64: expose FAR_EL1 tag bits in siginfo
signal: define the SA_EXPOSE_TAGBITS bit in sa_flags
signal: define the SA_UNSUPPORTED bit in sa_flags
arch: provide better documentation for the arch-specific SA_* flags
signal: clear non-uapi flag bits when passing/returning sa_flags
arch: move SA_* definitions to generic headers
parisc: start using signal-defs.h
parisc: Drop parisc special case for __sighandler_t

* for-next/cmdline-extended:
: Add support for CONFIG_CMDLINE_EXTENDED
arm64: Extend the kernel command line from the bootloader
arm64: kaslr: Refactor early init command line parsing

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Merge tag 'mhi-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-next

Manivannan writes:

MHI patches for v5.11

Here is the MHI patch set for v5.11. Most of the pa

Merge tag 'mhi-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-misc-next

Manivannan writes:

MHI patches for v5.11

Here is the MHI patch set for v5.11. Most of the patches are cleanups and fixes
but there are some noticeable changes too:

1. Loic finally removed the auto-start option from the channel parameters of the
MHI controller. It is the duty of the client drivers like qrtr to start/stop the
channels when required, so we decided to remove this option. As a side effect,
we changed the qrtr driver to start the channels during its probe and removed
the auto-start option from ath11k controller.

**NOTE** Since these changes spawns both MHI and networking trees, the patches
are maintained in an immutable branch [1] and pulled into both mhi-next and
ath11k-next branches. The networking patches got acks from ath11k and networking
maintainers as well.

2. Loic added a generic MHI pci controller driver. This driver will be used by
the PCI based Qualcomm modems like SDX55 and exposes channels such as QMI,
IP_HW0, IPCR etc...

3. Loic fixed the MHI device hierarchy by maintaining the correct parent child
relationships. Earlier all MHI devices lived in the same level under the parent
device like PCIe. But now, the MHI devices belonging to channels will become the
children of controller MHI device.

4. Finally Loic also improved the MHI device naming by using indexed names such
as mhi0, mhi1, etc... This will break the userspace applications depending on
the old naming convention but since the only one user so far is Jeff Hugo's AI
accelerator apps, we decided to make this change now itself with his agreement.

5. Bhaumik fixed the qrtr driver by stopping the channels during remove. This
patch also got ack from networking maintainer and we decided to take it through
MHI tree (via immutable branch) since we already had a qrtr change.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi.git/log/?h=mhi-ath11k-immutable

* tag 'mhi-for-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi: (30 commits)
mhi: pci_generic: Fix implicit conversion warning
bus: mhi: core: Fix error handling in mhi_register_controller()
bus: mhi: core: Fix device hierarchy
bus: mhi: core: Indexed MHI controller name
net: qrtr: Unprepare MHI channels during remove
bus: mhi: core: Remove MHI event ring IRQ handlers when powering down
bus: mhi: core: Mark and maintain device states early on after power down
bus: mhi: core: Separate system error and power down handling
bus: mhi: core: Check for IRQ availability during registration
bus: mhi: core: Move to an error state on mission mode failure
bus: mhi: core: Use appropriate label in firmware load handler API
bus: mhi: core: Move to an error state on any firmware load failure
bus: mhi: core: Prevent sending multiple RDDM entry callbacks
bus: mhi: core: Move to SYS_ERROR regardless of RDDM capability
bus: mhi: core: Skip device wake in error or shutdown states
bus: mhi: core: Move to using high priority workqueue
bus: mhi: core: Use appropriate names for firmware load functions
bus: mhi: core: Skip RDDM download for unknown execution environment
bus: mhi: core: Rename RDDM download function to use proper words
bus: mhi: core: Remove unused mhi_fw_load_worker() declaration
...

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Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Li

Merge remote-tracking branch 'origin/master' into perf/core

Further perf/core patches will depend on:

d3f7b1bb2040 ("mm/gup: fix gup_fast with dynamic page table folding")

which is already in Linus' tree.

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bus: mhi: Add MHI PCI support for WWAN modems

This is a generic MHI-over-PCI controller driver for MHI only devices
such as QCOM modems. For now it supports registering of Qualcomm SDX55
based PCIe

bus: mhi: Add MHI PCI support for WWAN modems

This is a generic MHI-over-PCI controller driver for MHI only devices
such as QCOM modems. For now it supports registering of Qualcomm SDX55
based PCIe modules. The MHI channels have been extracted from mhi
downstream driver.

This driver is for MHI-only devices which have all functionalities
exposed through MHI channels and accessed by the corresponding MHI
device drivers (no out-of-band communication).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
[mani: fixed up the Makefile rule]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

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Merge branch 'linus' into perf/kprobes

Conflicts:
include/asm-generic/atomic-instrumented.h
kernel/kprobes.c

Use the upstream atomic-instrumented.h checksum, and pick
the kprobes version of kerne

Merge branch 'linus' into perf/kprobes

Conflicts:
include/asm-generic/atomic-instrumented.h
kernel/kprobes.c

Use the upstream atomic-instrumented.h checksum, and pick
the kprobes version of kernel/kprobes.c, which effectively
reverts this upstream workaround:

645f224e7ba2: ("kprobes: Tell lockdep about kprobe nesting")

Since the new code *should* be fine without nesting.

Knock on wood ...

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

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