9045 Commits

Author SHA1 Message Date
Rafael J. Wysocki
6407e5ecdc PCI: PM: Make pci_choose_state() call pci_target_state()
The pci_choose_state() and pci_target_state() implementations are
somewhat divergent without a good reason, because they are used
for similar purposes.

Change the pci_choose_state() implementation to use pci_target_state()
internally except for transitions to the working state of the system
in which case it is expected to return D0.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-10-05 15:38:05 +02:00
Rafael J. Wysocki
bf39c929f9 PCI: PM: Rearrange pci_target_state()
Make pci_target_state() return D3cold or D0 without checking PME
support if the current power state of the device is D3cold or if it
does not support the standard PCI PM, respectively.

Next, drop the tergat_state local variable that has become redundant
from it.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-10-05 15:38:05 +02:00
Rafael J. Wysocki
f091837121 PCI: PM: Simplify acpi_pci_power_manageable()
Make acpi_pci_power_manageable() more straightforward.

No functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-10-05 15:26:23 +02:00
Rafael J. Wysocki
98634aa8d8 PCI: PM: Drop struct pci_platform_pm_ops
After previous changes there are no more users of struct
pci_platform_pm_ops in the tree, so drop it along with all of the
remaining related code.

No functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-10-05 15:25:06 +02:00
Sergio Paracuellos
7c2584faa1 PCI: Allow architecture-specific pci_remap_iospace()
pci_remap_iospace() was originally meant as an architecture specific helper
but it moved into generic code after all architectures had the same
requirements. MIPS has different requirements so it should not be shared.

The way for doing this will be using a macro 'pci_remap_iospace' defined
for those architectures that need a special treatment. Hence, put core API
function inside preprocesor conditional code for 'pci_remap_iospace'
definition.

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20210925203224.10419-5-sergio.paracuellos@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-05 12:36:25 +02:00
Krzysztof Wilczyński
65315ec52c PCI: imx6: Remove unused assignment to variable ret
Previously, the maximum link speed was set following an "fsl,max-link-speed"
property read, and should the read failed, then the PCIe generation was
manually set to PCIe Gen1 and thus limiting the link speed to 2.5 GT/s.

Code refactoring completed in the commit 39bc5006501c ("PCI: dwc:
Centralize link gen setting") changed to the logic that was previously
used to limit the maximum link speed leaving behind an unused assignment
to a variable "ret".

Since the value returned from the of_property_read_u32() and stored in
the variable "ret" is never used in any meaningful way, and it's also
immediately reassigned in the code that follows, the assignment can be
removed.

Link: https://lore.kernel.org/r/20211003025439.84783-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2021-10-05 10:05:14 +01:00
Niklas Schnelle
a46044a92a s390/pci: fix zpci_zdev_put() on reserve
Since commit 2a671f77ee49 ("s390/pci: fix use after free of zpci_dev")
the reference count of a zpci_dev is incremented between
pcibios_add_device() and pcibios_release_device() which was supposed to
prevent the zpci_dev from being freed while the common PCI code has
access to it. It was missed however that the handling of zPCI
availability events assumed that once zpci_zdev_put() was called no
later availability event would still see the device. With the previously
mentioned commit however this assumption no longer holds and we must
make sure that we only drop the initial long-lived reference the zPCI
subsystem holds exactly once.

Do so by introducing a zpci_device_reserved() function that handles when
a device is reserved. Here we make sure the zpci_dev will not be
considered for further events by removing it from the zpci_list.

This also means that the device actually stays in the
ZPCI_FN_STATE_RESERVED state between the time we know it has been
reserved and the final reference going away. We thus need to consider it
a real state instead of just a conceptual state after the removal. The
final cleanup of PCI resources, removal from zbus, and destruction of
the IOMMU stays in zpci_release_device() to make sure holders of the
reference do see valid data until the release.

Fixes: 2a671f77ee49 ("s390/pci: fix use after free of zpci_dev")
Cc: stable@vger.kernel.org
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-10-04 09:49:10 +02:00
Kunihiko Hayashi
a2258831d1 PCI: endpoint: Use sysfs_emit() in "show" functions
Convert sprintf() in sysfs "show" functions to sysfs_emit() in order to
check for buffer overruns in sysfs outputs.

Link: https://lore.kernel.org/r/1630472957-26857-1-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
2021-09-30 12:04:03 +01:00
Pali Rohár
894682f0a9 PCI: xgene: Use PCI_VENDOR_ID_AMCC macro
Header file linux/pci_ids.h defines AMCC vendor id (0x10e8) macro named
PCI_VENDOR_ID_AMCC. So use this macro instead of driver custom macro.

Link: https://lore.kernel.org/r/20210927134356.11799-1-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
2021-09-30 10:44:37 +01:00
Luca Ceresoli
5af9405397 PCI: dra7xx: Get an optional clock
If the clock is provided externally we need to make sure it is enabled
before starting PCI scan.

Link: https://lore.kernel.org/r/20210531085934.2662457-5-luca@lucaceresoli.net
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2021-09-30 09:52:16 +01:00
Luca Ceresoli
b9a6943dc8 PCI: dra7xx: Remove unused include
Unused since commit e259c2926c01 ("PCI: pci-dra7xx: Prepare for deferred
probe with module_platform_driver").

Link: https://lore.kernel.org/r/20210531085934.2662457-4-luca@lucaceresoli.net
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2021-09-30 09:52:16 +01:00
Luca Ceresoli
3b868d150e PCI: dra7xx: Make it a kernel module
Enable building the driver as a loadable kernel module.

Link: https://lore.kernel.org/r/20210531085934.2662457-3-luca@lucaceresoli.net
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2021-09-30 09:52:16 +01:00
Luca Ceresoli
3a7fb86758 PCI: dwc: Export more symbols to allow modular drivers
These symbols are used by the pci-dra7xx driver. Export them to allow
building pci-dra7xx as a module.

Link: https://lore.kernel.org/r/20210531085934.2662457-2-luca@lucaceresoli.net
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
2021-09-30 09:52:16 +01:00
Kai-Heng Feng
7c3855c423 PCI: Coalesce host bridge contiguous apertures
Built-in graphics at 07:00.0 on HP EliteDesk 805 G6 doesn't work because
graphics can't get the BAR it needs.  The BIOS configuration is
correct: BARs 0 and 2 both fit in the 00:08.1 bridge window.

But that 00:08.1 window covers two host bridge apertures from _CRS.
Previously we assumed this was illegal, so we clipped the window to fit
into one aperture (see 0f7e7aee2f37 ("PCI: Add pci_bus_clip_resource() to
clip to fit upstream window")).

  pci_bus 0000:00: root bus resource [mem 0x10020200000-0x100303fffff window]
  pci_bus 0000:00: root bus resource [mem 0x10030400000-0x100401fffff window]

  pci 0000:00:08.1:   bridge window [mem 0x10030000000-0x100401fffff 64bit pref]
  pci 0000:07:00.0: reg 0x10: [mem 0x10030000000-0x1003fffffff 64bit pref]
  pci 0000:07:00.0: reg 0x18: [mem 0x10040000000-0x100401fffff 64bit pref]

  pci 0000:00:08.1: can't claim BAR 15 [mem 0x10030000000-0x100401fffff 64bit pref]: no compatible bridge window
  pci 0000:00:08.1: [mem 0x10030000000-0x100401fffff 64bit pref] clipped to [mem 0x10030000000-0x100303fffff 64bit pref]
  pci 0000:00:08.1:   bridge window [mem 0x10030000000-0x100303fffff 64bit pref]

  pci 0000:07:00.0: can't claim BAR 0 [mem 0x10030000000-0x1003fffffff 64bit pref]: no compatible bridge window
  pci 0000:07:00.0: can't claim BAR 2 [mem 0x10040000000-0x100401fffff 64bit pref]: no compatible bridge window

However, the host bridge apertures are contiguous, so there's no need to
clip in this case.  Coalesce contiguous apertures so we can allocate from
the entire contiguous region.

Previous commit 65db04053efe ("PCI: Coalesce host bridge contiguous
apertures") was similar but sorted the apertures, and Guenter Roeck
reported a regression in ppc:sam460ex qemu emulation from nvme; see
https://lore.kernel.org/all/20210709231529.GA3270116@roeck-us.net/

[bhelgaas: commit log]
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=212013
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20210713125007.1260304-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Guenter Roeck <linux@roeck-us.net>
2021-09-29 16:25:20 -05:00
Rafael J. Wysocki
d97c5d4c62 PCI: ACPI: PM: Do not use pci_platform_pm_ops for ACPI
Using struct pci_platform_pm_ops for ACPI adds unnecessary
indirection to the interactions between the PCI core and ACPI PM,
which is also subject to retpolines.

Moreover, it is not particularly clear from the current code that,
as far as PCI PM is concerned, "platform" really means just ACPI
except for the special casess when Intel MID PCI PM is used or when
ACPI support is disabled (through the kernel config or command line,
or because there are no usable ACPI tables on the system).

To address the above, rework the PCI PM code to invoke ACPI PM
functions directly as needed and drop the acpi_pci_platform_pm
object that is not necessary any more.

Accordingly, update some of the ACPI PM functions in question to do
extra checks in case the ACPI support is disabled (which previously
was taken care of by avoiding to set the pci_platform_ops pointer
in those cases).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-09-29 21:17:20 +02:00
Krzysztof Wilczyński
e0f7b19223 PCI: Use kstrtobool() directly, sans strtobool() wrapper
strtobool() is a wrapper around kstrtobool() that has been added for
backward compatibility.

There is no reason to use the old API, so use kstrtobool() directly.

Related: ef951599074b ("lib: move strtobool() to kstrtobool()")

Link: https://lore.kernel.org/r/20210915230127.2495723-3-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-28 18:06:29 -05:00
Krzysztof Wilczyński
36f354ec7b PCI/sysfs: Return -EINVAL consistently from "store" functions
Most of the "store" functions that handle userspace input via sysfs return
-EINVAL should the value fail validation and/or type conversion.  This
error code is a clear message to userspace that the value is not a valid
input.

However, some of the "show" functions return input parsing error codes
as-is, which may be either -EINVAL or -ERANGE.  The former would often be
from kstrtobool(), and the latter typically from other kstr*() functions
such as kstrtou8(), kstrtou32(), kstrtoint(), etc.

-EINVAL is commonly returned as the error code to indicate that the value
provided is invalid, but -ERANGE is not very useful in userspace.

Therefore, normalize the return error code to be -EINVAL for when the
validation and/or type conversion fails.

Link: https://lore.kernel.org/r/20210915230127.2495723-2-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-28 17:47:04 -05:00
Krzysztof Wilczyński
95e83e219d PCI/sysfs: Check CAP_SYS_ADMIN before parsing user input
Check if the "CAP_SYS_ADMIN" capability flag is set before parsing user
input as it makes more sense to first check whether the current user
actually has the right permissions before accepting any input from such
user.

This will also make order in which enable_store() and msi_bus_store()
perform the "CAP_SYS_ADMIN" capability check consistent with other
PCI-related sysfs objects that first verify whether user has this
capability set.

Link: https://lore.kernel.org/r/20210915230127.2495723-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-28 17:46:28 -05:00
Pranay Sanghai
9a0a1417d3 PCI: Tidy comments
Make comments follow multi-line comment conventions. No functional change
intended.

Link: https://lore.kernel.org/r/YUZJenW2UCA4Qu0O@pranay-desktop
Signed-off-by: Pranay Sanghai <pranaysanghai@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-28 13:43:17 -05:00
Rafael J. Wysocki
d5b0d88385 PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM
There are only two users of struct pci_platform_pm_ops in the tree,
one of which is Intel MID PM and the other one is ACPI.  They are
mutually exclusive and the MID PM should take precedence when they
both are enabled, but whether or not this really is the case hinges
on the specific ordering of arch_initcall() calls made by them.

The struct pci_platform_pm_ops abstraction is not really necessary
for just these two users, but it adds complexity and overhead because
of retoplines involved in using all of the function pointers in there.
It also makes following the code a bit more difficult than it would
be otherwise.

Moreover, Intel MID PCI PM doesn't even implement the majority of the
function pointers in struct pci_platform_pm_ops in a meaningful way,
so switch over the PCI core to calling the relevant MID PM routines,
mid_pci_set_power_state() and mid_pci_set_power_state(), directly as
needed and drop mid_pci_platform_pm.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-09-27 17:13:21 +02:00
Rafael J. Wysocki
4795448117 PCI: ACPI: Drop acpi_pci_bus
The acpi_pci_bus structure was used primarily for running
acpi_pci_find_companion() during PCI device objects registration,
but after commit 375553a93201 ("PCI: Setup ACPI fwnode early and at
the same time with OF") that function is called by pci_setup_device()
via pci_set_acpi_fwnode(), which happens before calling
pci_device_add() on the new PCI device object, so its ACPI companion
has been set already when acpi_device_notify() runs and it will never
call ->find_companion() from acpi_pci_bus.

For this reason, modify acpi_device_notify() and
acpi_device_notify_remove() to call pci_acpi_setup() and
pci_acpi_cleanup(), respectively, directly on PCI device objects
and drop acpi_pci_bus altogether.

While at it, notice that pci_acpi_setup() and pci_acpi_cleanup()
can obtain the ACPI companion pointer, which is guaranteed to not
be NULL, from their callers and modify them to work that way so
as to reduce the number of redundant checks somewhat.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Ferry Toth <fntoth@gmail.com>
2021-09-27 17:00:21 +02:00
Linus Torvalds
5739844347 xen: branch for v5.15-rc3
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Merge tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:
 "Some minor cleanups and fixes of some theoretical bugs, as well as a
  fix of a bug introduced in 5.15-rc1"

* tag 'for-linus-5.15b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/x86: fix PV trap handling on secondary processors
  xen/balloon: fix balloon kthread freezing
  swiotlb-xen: this is PV-only on x86
  xen/pci-swiotlb: reduce visibility of symbols
  PCI: only build xen-pcifront in PV-enabled environments
  swiotlb-xen: ensure to issue well-formed XENMEM_exchange requests
  Xen/gntdev: don't ignore kernel unmapping error
  xen/x86: drop redundant zeroing from cpu_initialize_context()
2021-09-25 15:37:31 -07:00
Long Li
41608b64b1 PCI: hv: Fix sleep while in non-sleep context when removing child devices from the bus
In hv_pci_bus_exit, the code is holding a spinlock while calling
pci_destroy_slot(), which takes a mutex.

This is not safe for spinlock. Fix this by moving the children to be
deleted to a list on the stack, and removing them after spinlock is
released.

Fixes: 94d22763207a ("PCI: hv: Fix a race condition when removing the device")

Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: "Krzysztof Wilczyński" <kw@linux.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Michael Kelley <mikelley@microsoft.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/linux-hyperv/20210823152130.GA21501@kili/
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
Link: https://lore.kernel.org/r/1630365207-20616-1-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2021-09-24 09:34:29 +00:00
Oliver O'Halloran
06dc660e6e PCI: Rename pcibios_add_device() to pcibios_device_add()
The general convention for pcibios_* hooks is that they're named after the
corresponding pci_* function they provide a hook for. The exception is
pcibios_add_device() which provides a hook for pci_device_add().

Rename pcibios_add_device() to pcibios_device_add() so it matches
pci_device_add().

Also, remove the export of the microblaze version. The only caller must be
compiled as a built-in so there's no reason for the export.

Link: https://lore.kernel.org/r/20210913152709.48013-1-oohall@gmail.com
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>	# s390
2021-09-21 15:26:09 -05:00
Jan Kiszka
0e8ae5a6ff PCI/portdrv: Do not setup up IRQs if there are no users
Avoid registering service IRQs if there is no service that offers them
or no driver to register a handler against them. This saves IRQ vectors
when they are limited (e.g. on x86) and also avoids that spurious events
could hit a missing handler. Such spurious events need to be generated
by the Jailhouse hypervisor for active MSI vectors when enabling or
disabling itself.

Link: https://lore.kernel.org/r/8f9a13ac-8ab1-15ac-06cb-c131b488a36f@siemens.com
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-20 15:09:14 -05:00
Ingmar Klein
e3f4bd3462 PCI: Mark Atheros QCA6174 to avoid bus reset
When passing the Atheros QCA6174 through to a virtual machine, the VM hangs
at the point where the ath10k driver loads.

Add a quirk to avoid bus resets on this device, which avoids the hang.

[bhelgaas: commit log]
Link: https://lore.kernel.org/r/08982e05-b6e8-5a8d-24ab-da1488ee50a8@web.de
Signed-off-by: Ingmar Klein <ingmar_klein@web.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Cc: stable@vger.kernel.org
2021-09-20 14:46:38 -05:00
Wang Lu
3a19407913 PCI/P2PDMA: Apply bus offset correctly in DMA address calculation
The bus offset is bus address - physical address, so the calculation in
__pci_p2pdma_map_sg should be: bus address = physical address + bus offset.

Correct the dma_address computation in __pci_p2pdma_map_sg().

Link: https://lore.kernel.org/r/20210909032528.24517-1-wanglu@dapustor.com
Signed-off-by: Wang Lu <wanglu@dapustor.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
2021-09-20 14:46:02 -05:00
Jan Beulich
e243ae953b PCI: only build xen-pcifront in PV-enabled environments
The driver's module init function, pcifront_init(), invokes
xen_pv_domain() first thing. That construct produces constant "false"
when !CONFIG_XEN_PV. Hence there's no point building the driver in
non-PV configurations.

Drop the (now implicit and generally wrong) X86 dependency: At present,
XEN_PV can only be set when X86 is also enabled. In general an
architecture supporting Xen PV (and PCI) would want to have this driver
built.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/3a7f6c9b-215d-b593-8056-b5fe605dafd7@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-09-20 17:01:11 +02:00
Evan Quan
60b78ed088 PCI: Add AMD GPU multi-function power dependencies
Some AMD GPUs have built-in USB xHCI and USB Type-C UCSI controllers with
power dependencies between the GPU and the other functions as in
6d2e369f0d4c ("PCI: Add NVIDIA GPU multi-function power dependencies").

Add device link support for the AMD integrated USB xHCI and USB Type-C UCSI
controllers.

Without this, runtime power management, including GPU resume and temp and
fan sensors don't work correctly.

Reported-at: https://gitlab.freedesktop.org/drm/amd/-/issues/1704
Link: https://lore.kernel.org/r/20210903063311.3606226-1-evan.quan@amd.com
Signed-off-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
2021-09-15 16:31:41 -05:00
Jean-Philippe Brucker
6bd65974de PCI/ACPI: Don't reset a fwnode set by OF
Commit 375553a93201 ("PCI: Setup ACPI fwnode early and at the same time
with OF") added a call to pci_set_acpi_fwnode() in pci_setup_device(),
which unconditionally clears any fwnode previously set by
pci_set_of_node().

pci_set_acpi_fwnode() looks for ACPI_COMPANION(), which only returns the
existing fwnode if it was set by ACPI_COMPANION_SET(). If it was set by
OF instead, ACPI_COMPANION() returns NULL and pci_set_acpi_fwnode()
accidentally clears the fwnode. To fix this, look for any fwnode instead
of just ACPI companions.

Fixes a virtio-iommu boot regression in v5.15-rc1.

Fixes: 375553a93201 ("PCI: Setup ACPI fwnode early and at the same time with OF")
Link: https://lore.kernel.org/r/20210913172358.1775381-1-jean-philippe@linaro.org
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-09-15 16:26:59 -05:00
Bjorn Helgaas
00e1a5d21b PCI/VPD: Defer VPD sizing until first access
7bac54497c3e ("PCI/VPD: Determine VPD size in pci_vpd_init()") reads VPD at
enumeration-time to find the size.  But this is quite slow, and we don't
need the size until we actually need data from VPD.  Dave reported a boot
slowdown of more than two minutes [1].

Defer the VPD sizing until a driver or the user (via sysfs) requests
information from VPD.

If devices are quirked because VPD is known not to work, don't bother even
looking for the VPD capability.  The VPD will not be accessible at all.

[1] https://lore.kernel.org/r/20210913141818.GA27911@codemonkey.org.uk/
Link: https://lore.kernel.org/r/20210914215543.GA1437800@bjorn-Precision-5520
Fixes: 7bac54497c3e ("PCI/VPD: Determine VPD size in pci_vpd_init()")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-15 16:26:13 -05:00
Linus Torvalds
9c566611ac More ACPI updates for 5.15-rc1
- Add ACPI support to the PCI VMD driver (Rafael Wysocki).
 
  - Rearrange suspend-to-idle support code to reflect the platform
    firmware expectations on some AMD platforms (Mario Limonciello).
 
  - Make SSDT overlays documentation follow the code documented by it
    more closely (Andy Shevchenko).
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Merge tag 'acpi-5.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more ACPI updates from Rafael Wysocki:
 "These add ACPI support to the PCI VMD driver, improve suspend-to-idle
  support for AMD platforms and update documentation.

  Specifics:

   - Add ACPI support to the PCI VMD driver (Rafael Wysocki)

   - Rearrange suspend-to-idle support code to reflect the platform
     firmware expectations on some AMD platforms (Mario Limonciello)

   - Make SSDT overlays documentation follow the code documented by it
     more closely (Andy Shevchenko)"

* tag 'acpi-5.15-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: PM: s2idle: Run both AMD and Microsoft methods if both are supported
  Documentation: ACPI: Align the SSDT overlays file with the code
  PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus
2021-09-08 16:33:21 -07:00
Linus Torvalds
ac08b1c68d pci-v5.15-changes
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Merge tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:
 "Enumeration:
   - Convert controller drivers to generic_handle_domain_irq() (Marc
     Zyngier)
   - Simplify VPD (Vital Product Data) access and search (Heiner
     Kallweit)
   - Update bnx2, bnx2x, bnxt, cxgb4, cxlflash, sfc, tg3 drivers to use
     simplified VPD interfaces (Heiner Kallweit)
   - Run Max Payload Size quirks before configuring MPS; work around
     ASMedia ASM1062 SATA MPS issue (Marek Behún)

  Resource management:
   - Refactor pci_ioremap_bar() and pci_ioremap_wc_bar() (Krzysztof
     Wilczyński)
   - Optimize pci_resource_len() to reduce kernel size (Zhen Lei)

  PCI device hotplug:
   - Fix a double unmap in ibmphp (Vishal Aslot)

  PCIe port driver:
   - Enable Bandwidth Notification only if port supports it (Stuart
     Hayes)

  Sysfs/proc/syscalls:
   - Add schedule point in proc_bus_pci_read() (Krzysztof Wilczyński)
   - Return ~0 data on pciconfig_read() CAP_SYS_ADMIN failure (Krzysztof
     Wilczyński)
   - Return "int" from pciconfig_read() syscall (Krzysztof Wilczyński)

  Virtualization:
   - Extend "pci=noats" to also turn on Translation Blocking to protect
     against some DMA attacks (Alex Williamson)
   - Add sysfs mechanism to control the type of reset used between
     device assignments to VMs (Amey Narkhede)
   - Add support for ACPI _RST reset method (Shanker Donthineni)
   - Add ACS quirks for Cavium multi-function devices (George Cherian)
   - Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms (Wasim Khan)
   - Allow HiSilicon AMBA devices that appear as fake PCI devices to use
     PASID and SVA (Zhangfei Gao)

  Endpoint framework:
   - Add support for SR-IOV Endpoint devices (Kishon Vijay Abraham I)
   - Zero-initialize endpoint test tool parameters so we don't use
     random parameters (Shunyong Yang)

  APM X-Gene PCIe controller driver:
   - Remove redundant dev_err() call in xgene_msi_probe() (ErKun Yang)

  Broadcom iProc PCIe controller driver:
   - Don't fail devm_pci_alloc_host_bridge() on missing 'ranges' because
     it's optional on BCMA devices (Rob Herring)
   - Fix BCMA probe resource handling (Rob Herring)

  Cadence PCIe driver:
   - Work around J7200 Link training electrical issue by increasing
     delays in LTSSM (Nadeem Athani)

  Intel IXP4xx PCI controller driver:
   - Depend on ARCH_IXP4XX to avoid useless config questions (Geert
     Uytterhoeven)

  Intel Keembay PCIe controller driver:
   - Add Intel Keem Bay PCIe controller (Srikanth Thokala)

  Marvell Aardvark PCIe controller driver:
   - Work around config space completion handling issues (Evan Wang)
   - Increase timeout for config access completions (Pali Rohár)
   - Emulate CRS Software Visibility bit (Pali Rohár)
   - Configure resources from DT 'ranges' property to fix I/O space
     access (Pali Rohár)
   - Serialize INTx mask/unmask (Pali Rohár)

  MediaTek PCIe controller driver:
   - Add MT7629 support in DT (Chuanjia Liu)
   - Fix an MSI issue (Chuanjia Liu)
   - Get syscon regmap ("mediatek,generic-pciecfg"), IRQ number
     ("pci_irq"), PCI domain ("linux,pci-domain") from DT properties if
     present (Chuanjia Liu)

  Microsoft Hyper-V host bridge driver:
   - Add ARM64 support (Boqun Feng)
   - Support "Create Interrupt v3" message (Sunil Muthuswamy)

  NVIDIA Tegra PCIe controller driver:
   - Use seq_puts(), move err_msg from stack to static, fix OF node leak
     (Christophe JAILLET)

  NVIDIA Tegra194 PCIe driver:
   - Disable suspend when in Endpoint mode (Om Prakash Singh)
   - Fix MSI-X address programming error (Om Prakash Singh)
   - Disable interrupts during suspend to avoid spurious AER link down
     (Om Prakash Singh)

  Renesas R-Car PCIe controller driver:
   - Work around hardware issue that prevents Link L1->L0 transition
     (Marek Vasut)
   - Fix runtime PM refcount leak (Dinghao Liu)

  Rockchip DesignWare PCIe controller driver:
   - Add Rockchip RK356X host controller driver (Simon Xue)

  TI J721E PCIe driver:
   - Add support for J7200 and AM64 (Kishon Vijay Abraham I)

  Toshiba Visconti PCIe controller driver:
   - Add Toshiba Visconti PCIe host controller driver (Nobuhiro
     Iwamatsu)

  Xilinx NWL PCIe controller driver:
   - Enable PCIe reference clock via CCF (Hyun Kwon)

  Miscellaneous:
   - Convert sta2x11 from 'pci_' to 'dma_' API (Christophe JAILLET)
   - Fix pci_dev_str_match_path() alloc while atomic bug (used for
     kernel parameters that specify devices) (Dan Carpenter)
   - Remove pointless Precision Time Management warning when PTM is
     present but not enabled (Jakub Kicinski)
   - Remove surplus "break" statements (Krzysztof Wilczyński)"

* tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (132 commits)
  PCI: ibmphp: Fix double unmap of io_mem
  x86/PCI: sta2x11: switch from 'pci_' to 'dma_' API
  PCI/VPD: Use unaligned access helpers
  PCI/VPD: Clean up public VPD defines and inline functions
  cxgb4: Use pci_vpd_find_id_string() to find VPD ID string
  PCI/VPD: Add pci_vpd_find_id_string()
  PCI/VPD: Include post-processing in pci_vpd_find_tag()
  PCI/VPD: Stop exporting pci_vpd_find_info_keyword()
  PCI/VPD: Stop exporting pci_vpd_find_tag()
  PCI: Set dma-can-stall for HiSilicon chips
  PCI: rockchip-dwc: Add Rockchip RK356X host controller driver
  PCI: dwc: Remove surplus break statement after return
  PCI: artpec6: Remove local code block from switch statement
  PCI: artpec6: Remove surplus break statement after return
  MAINTAINERS: Add entries for Toshiba Visconti PCIe controller
  PCI: visconti: Add Toshiba Visconti PCIe host controller driver
  PCI/portdrv: Enable Bandwidth Notification only if port supports it
  PCI: Allow PASID on fake PCIe devices without TLP prefixes
  PCI: mediatek: Use PCI domain to handle ports detection
  PCI: mediatek: Add new method to get irq number
  ...
2021-09-07 19:13:42 -07:00
Linus Torvalds
3de18c865f Merge branch 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb updates from Konrad Rzeszutek Wilk:
 "A new feature called restricted DMA pools. It allows SWIOTLB to
  utilize per-device (or per-platform) allocated memory pools instead of
  using the global one.

  The first big user of this is ARM Confidential Computing where the
  memory for DMA operations can be set per platform"

* 'stable/for-linus-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb: (23 commits)
  swiotlb: use depends on for DMA_RESTRICTED_POOL
  of: restricted dma: Don't fail device probe on rmem init failure
  of: Move of_dma_set_restricted_buffer() into device.c
  powerpc/svm: Don't issue ultracalls if !mem_encrypt_active()
  s390/pv: fix the forcing of the swiotlb
  swiotlb: Free tbl memory in swiotlb_exit()
  swiotlb: Emit diagnostic in swiotlb_exit()
  swiotlb: Convert io_default_tlb_mem to static allocation
  of: Return success from of_dma_set_restricted_buffer() when !OF_ADDRESS
  swiotlb: add overflow checks to swiotlb_bounce
  swiotlb: fix implicit debugfs declarations
  of: Add plumbing for restricted DMA pool
  dt-bindings: of: Add restricted DMA pool
  swiotlb: Add restricted DMA pool initialization
  swiotlb: Add restricted DMA alloc/free support
  swiotlb: Refactor swiotlb_tbl_unmap_single
  swiotlb: Move alloc_size to swiotlb_find_slots
  swiotlb: Use is_swiotlb_force_bounce for swiotlb data bouncing
  swiotlb: Update is_swiotlb_active to add a struct device argument
  swiotlb: Update is_swiotlb_buffer to add a struct device argument
  ...
2021-09-03 10:34:44 -07:00
Linus Torvalds
89b6b8cd92 VFIO update for v5.15-rc1
- Fix dma-valid return WAITED implementation (Anthony Yznaga)
 
  - SPDX license cleanups (Cai Huoqing)
 
  - Split vfio-pci-core from vfio-pci and enhance PCI driver matching
    to support future vendor provided vfio-pci variants (Yishai Hadas,
    Max Gurtovoy, Jason Gunthorpe)
 
  - Replace duplicated reflck with core support for managing first
    open, last close, and device sets (Jason Gunthorpe, Max Gurtovoy,
    Yishai Hadas)
 
  - Fix non-modular mdev support and don't nag about request callback
    support (Christoph Hellwig)
 
  - Add semaphore to protect instruction intercept handler and replace
    open-coded locks in vfio-ap driver (Tony Krowiak)
 
  - Convert vfio-ap to vfio_register_group_dev() API (Jason Gunthorpe)
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Merge tag 'vfio-v5.15-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Fix dma-valid return WAITED implementation (Anthony Yznaga)

 - SPDX license cleanups (Cai Huoqing)

 - Split vfio-pci-core from vfio-pci and enhance PCI driver matching to
   support future vendor provided vfio-pci variants (Yishai Hadas, Max
   Gurtovoy, Jason Gunthorpe)

 - Replace duplicated reflck with core support for managing first open,
   last close, and device sets (Jason Gunthorpe, Max Gurtovoy, Yishai
   Hadas)

 - Fix non-modular mdev support and don't nag about request callback
   support (Christoph Hellwig)

 - Add semaphore to protect instruction intercept handler and replace
   open-coded locks in vfio-ap driver (Tony Krowiak)

 - Convert vfio-ap to vfio_register_group_dev() API (Jason Gunthorpe)

* tag 'vfio-v5.15-rc1' of git://github.com/awilliam/linux-vfio: (37 commits)
  vfio/pci: Introduce vfio_pci_core.ko
  vfio: Use kconfig if XX/endif blocks instead of repeating 'depends on'
  vfio: Use select for eventfd
  PCI / VFIO: Add 'override_only' support for VFIO PCI sub system
  PCI: Add 'override_only' field to struct pci_device_id
  vfio/pci: Move module parameters to vfio_pci.c
  vfio/pci: Move igd initialization to vfio_pci.c
  vfio/pci: Split the pci_driver code out of vfio_pci_core.c
  vfio/pci: Include vfio header in vfio_pci_core.h
  vfio/pci: Rename ops functions to fit core namings
  vfio/pci: Rename vfio_pci_device to vfio_pci_core_device
  vfio/pci: Rename vfio_pci_private.h to vfio_pci_core.h
  vfio/pci: Rename vfio_pci.c to vfio_pci_core.c
  vfio/ap_ops: Convert to use vfio_register_group_dev()
  s390/vfio-ap: replace open coded locks for VFIO_GROUP_NOTIFY_SET_KVM notification
  s390/vfio-ap: r/w lock for PQAP interception handler function pointer
  vfio/type1: Fix vfio_find_dma_valid return
  vfio-pci/zdev: Remove repeated verbose license text
  vfio: platform: reset: Convert to SPDX identifier
  vfio: Remove struct vfio_device_ops open/release
  ...
2021-09-02 13:41:33 -07:00
Linus Torvalds
9ae5fceb9a xen: branch for v5.15-rc1
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Merge tag 'for-linus-5.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - some small cleanups

 - a fix for a bug when running as Xen PV guest which could result in
   not all memory being transferred in case of a migration of the guest

 - a small series for getting rid of code for supporting very old Xen
   hypervisor versions nobody should be using since many years now

 - a series for hardening the Xen block frontend driver

 - a fix for Xen PV boot code issuing warning messages due to a stray
   preempt_disable() on the non-boot processors

* tag 'for-linus-5.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: remove stray preempt_disable() from PV AP startup code
  xen/pcifront: Removed unnecessary __ref annotation
  x86: xen: platform-pci-unplug: use pr_err() and pr_warn() instead of raw printk()
  drivers/xen/xenbus/xenbus_client.c: fix bugon.cocci warnings
  xen/blkfront: don't trust the backend response data blindly
  xen/blkfront: don't take local copy of a request from the ring page
  xen/blkfront: read response from backend only once
  xen: assume XENFEAT_gnttab_map_avail_bits being set for pv guests
  xen: assume XENFEAT_mmu_pt_update_preserve_ad being set for pv guests
  xen: check required Xen features
  xen: fix setting of max_pfn in shared_info
2021-09-02 13:20:11 -07:00
Bjorn Helgaas
e3c825c93e Merge branch 'remotes/lorenzo/pci/misc'
- Make ixp4xx driver depend on ARCH_IXP4XX (Geert Uytterhoeven)

* remotes/lorenzo/pci/misc:
  PCI: controller: PCI_IXP4XX should depend on ARCH_IXP4XX
2021-09-02 14:56:52 -05:00
Bjorn Helgaas
6e129176c3 Merge branch 'remotes/lorenzo/pci/endpoint'
- Add max-virtual-functions to endpoint binding (Kishon Vijay Abraham I)

- Add pci_epf_add_vepf() API to add virtual function to endpoint (Kishon
  Vijay Abraham I)

- Add pci_epf_vepf_link() to link virtual function to endpoint physical
  function (Kishon Vijay Abraham I)

- Add virtual function number to pci_epc_ops endpoint ops interfaces
  (Kishon Vijay Abraham I)

- Simplify register base address computation for endpoint BAR configuration
  (Kishon Vijay Abraham I)

- Add support to configure virtual functions in cadence endpoint driver
  (Kishon Vijay Abraham I)

- Add SR-IOV configuration to endpoint test driver (Kishon Vijay Abraham I)

- Document configfs usage to create virtual functions for endpoints (Kishon
  Vijay Abraham I)

* remotes/lorenzo/pci/endpoint:
  Documentation: PCI: endpoint/pci-endpoint-cfs: Guide to use SR-IOV
  misc: pci_endpoint_test: Populate sriov_configure ops to configure SR-IOV device
  PCI: cadence: Add support to configure virtual functions
  PCI: cadence: Simplify code to get register base address for configuring BAR
  PCI: endpoint: Add virtual function number in pci_epc ops
  PCI: endpoint: Add support to link a physical function to a virtual function
  PCI: endpoint: Add support to add virtual function in endpoint core
  dt-bindings: PCI: pci-ep: Add binding to specify virtual function
2021-09-02 14:56:51 -05:00
Bjorn Helgaas
eccefc748e Merge branch 'remotes/lorenzo/pci/xilinx-nwl'
- Document optional clock DT property (Michal Simek)

- Enable PCIe ref clock (Hyun Kwon)

* remotes/lorenzo/pci/xilinx-nwl:
  PCI: xilinx-nwl: Enable the clock through CCF
  dt-bindings: pci: xilinx-nwl: Document optional clock property
2021-09-02 14:56:51 -05:00
Bjorn Helgaas
09cfc9db2d Merge branch 'remotes/lorenzo/pci/xgene'
- Remove redundant dev_err() after devm_ioremap_resource() (ErKun Yang)

* remotes/lorenzo/pci/xgene:
  PCI: xgene-msi: Remove redundant dev_err() call in xgene_msi_probe()
2021-09-02 14:56:51 -05:00
Bjorn Helgaas
4a4547db56 Merge branch 'remotes/lorenzo/pci/tegra194'
- Fix handling BME_CHGED event (Om Prakash Singh)

- Fix MSI-X programming (Om Prakash Singh)

- Disable interrupts before entering L2 (Om Prakash Singh)

- Don't allow suspend when Tegra PCIe is in EP mode (Om Prakash Singh)

* remotes/lorenzo/pci/tegra194:
  PCI: tegra194: Cleanup unused code
  PCI: tegra194: Don't allow suspend when Tegra PCIe is in EP mode
  PCI: tegra194: Disable interrupts before entering L2
  PCI: tegra194: Fix MSI-X programming
  PCI: tegra194: Fix handling BME_CHGED event
2021-09-02 14:56:50 -05:00
Bjorn Helgaas
db2d64f837 Merge branch 'remotes/lorenzo/pci/tegra'
- Remove unused struct tegra_pcie_bus (Krzysztof Wilczyński)

* remotes/lorenzo/pci/tegra:
  PCI: tegra: make const array err_msg static
  PCI: tegra: Use 'seq_puts' instead of 'seq_printf'
  PCI: tegra: Fix OF node reference leak
  PCI: tegra: Remove unused struct tegra_pcie_bus
2021-09-02 14:56:50 -05:00
Bjorn Helgaas
c2863b217e Merge branch 'remotes/lorenzo/pci/rcar'
- Fix runtime PM imbalance in rcar_pcie_ep_probe() (Dinghao Liu)

* remotes/lorenzo/pci/rcar:
  PCI: rcar: Add L1 link state fix into data abort hook
  PCI: rcar: Fix runtime PM imbalance in rcar_pcie_ep_probe()
2021-09-02 14:56:49 -05:00
Bjorn Helgaas
c501cf9cbe Merge branch 'remotes/lorenzo/pci/mediatek'
- Split DT bindings for PCIe controllers with independent MSI domains into
  separate nodes for MT2712/MT7622 (Chuanjia Liu)

- Locate shared registers from "mediatek,generic-pciecfg" property
  (Chuanjia Liu)

- Get IRQ from "pcie_irq" if "interrupt-names" property is present to fix
  an MSI issue (Chuanjia Liu)

- Get PCI domain from "linux,pci-domain" property if present (Chuanjia Liu)

* remotes/lorenzo/pci/mediatek:
  PCI: mediatek: Use PCI domain to handle ports detection
  PCI: mediatek: Add new method to get irq number
  PCI: mediatek: Add new method to get shared pcie-cfg base address
  dt-bindings: PCI: mediatek: Update the Device tree bindings
2021-09-02 14:56:49 -05:00
Bjorn Helgaas
af42a0d4a8 Merge branch 'remotes/lorenzo/pci/keembay'
- Add Intel Keem Bay PCIe controller driver and DT binding (Srikanth
  Thokala)

* remotes/lorenzo/pci/keembay:
  PCI: keembay: Add support for Intel Keem Bay
  dt-bindings: PCI: Add Intel Keem Bay PCIe controller
2021-09-02 14:56:48 -05:00
Bjorn Helgaas
c1bb1449fa Merge branch 'remotes/lorenzo/pci/iproc'
- Don't fail devm_pci_alloc_host_bridge() on missing 'ranges' (Rob Herring)

- Fix BCMA probe resource handling (Rob Herring)

* remotes/lorenzo/pci/iproc:
  PCI: iproc: Fix BCMA probe resource handling
  PCI: of: Don't fail devm_pci_alloc_host_bridge() on missing 'ranges'
2021-09-02 14:56:48 -05:00
Bjorn Helgaas
a1e4ca8eb9 Merge branch 'remotes/lorenzo/pci/hyper-v'
- Add domain_nr in struct pci_host_bridge (Boqun Feng)

- Use host bridge MSI domain for root buses if present (Boqun Feng)

- Allow ARM64 virtual host bridge with no ACPI companion (e.g., Hyper-V)
  (Boqun Feng)

- Make Hyper-V enumeration more generic (Arnd Bergmann)

- Set Hyper-V domain_nr at probe-time (Boqun Feng)

- Set up Hyper-V MSI domain at bridge probe-time (Boqun Feng)

- Enable Hyper-V bridge probing on ARM64 (Boqun Feng)

* remotes/lorenzo/pci/hyper-v:
  PCI: hv: Turn on the host bridge probing on ARM64
  PCI: hv: Set up MSI domain at bridge probing time
  PCI: hv: Set ->domain_nr of pci_host_bridge at probing time
  PCI: hv: Generify PCI probing
  arm64: PCI: Support root bridge preparation for Hyper-V
  arm64: PCI: Restructure pcibios_root_bridge_prepare()
  PCI: Support populating MSI domains of root buses via bridges
  PCI: Introduce domain_nr in pci_host_bridge
2021-09-02 14:56:47 -05:00
Bjorn Helgaas
53cb14d256 Merge branch 'remotes/lorenzo/pci/hv'
- Support Hyper-V Create Interrupt v3 message (Sunil Muthuswamy)

* remotes/lorenzo/pci/hv:
  PCI: hv: Support for create interrupt v3
2021-09-02 14:56:47 -05:00
Bjorn Helgaas
2b5a949eea Merge branch 'remotes/lorenzo/pci/cadence'
- Convert bool in structs to bitfield (Kishon Vijay Abraham I)

- Work around J7200 non-PCIe SERDES lane electrical issue that prevents
  PCIe link training (Nadeem Athani)

- Add J7200 PCIe support to j721e (Kishon Vijay Abraham I)

- Add AM64 PCIe support to j721e (Kishon Vijay Abraham I)

- Add J7200 and AM64 device IDs to endpoint test (Kishon Vijay Abraham I)

* remotes/lorenzo/pci/cadence:
  misc: pci_endpoint_test: Add deviceID for AM64 and J7200
  PCI: j721e: Add PCIe support for AM64
  PCI: j721e: Add PCIe support for J7200
  PCI: cadence: Add quirk flag to set minimum delay in LTSSM Detect.Quiet state
  PCI: cadence: Use bitfield for *quirk_retrain_flag* instead of bool
2021-09-02 14:56:47 -05:00
Bjorn Helgaas
540267e236 Merge branch 'remotes/lorenzo/pci/aardvark'
- Fix PIO config access status checking (Evan Wang)

- Increase config access polling delay to 1.5s (Pali Rohár)

- Add PCIe Root Capabilities to bridge emulation (Pali Rohár)

- Report Config Request Retry Status when Software Visibility enabled (Pali
  Rohár)

- Add back configuration of PCIe resources from 'ranges' DT property and
  pay attention to DT size and CPU/PCI offset to fix issues with I/O port
  space (Pali Rohár)

- Serialize masking and unmasking legacy INTx interrupts (Pali Rohár)

* remotes/lorenzo/pci/aardvark:
  PCI: aardvark: Fix masking and unmasking legacy INTx interrupts
  PCI: aardvark: Configure PCIe resources from 'ranges' DT property
  PCI: aardvark: Fix reporting CRS value
  PCI: pci-bridge-emul: Add PCIe Root Capabilities Register
  PCI: aardvark: Increase polling delay to 1.5s while waiting for PIO response
  PCI: aardvark: Fix checking for PIO status
2021-09-02 14:56:46 -05:00