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8877 commits

Author SHA1 Message Date
Linus Torvalds
5a7ee55b1f pci-v5.15-fixes-2
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Merge tag 'pci-v5.15-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull pci fix from Bjorn Helgaas:

 - Don't save msi_populate_sysfs() error code as dev->msi_irq_groups so
   we don't dereference the error code as a pointer (Wang Hai)

* tag 'pci-v5.15-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/MSI: Handle msi_populate_sysfs() errors correctly
2021-10-16 09:00:46 -07:00
Wang Hai
2b94b6b79b PCI/MSI: Handle msi_populate_sysfs() errors correctly
Previously, when msi_populate_sysfs() failed, we saved the error return
value as dev->msi_irq_groups, which leads to a page fault when
free_msi_irqs() calls msi_destroy_sysfs().

To prevent this, leave dev->msi_irq_groups alone when msi_populate_sysfs()
fails.

Found by the Hulk Robot when injecting a memory allocation fault in
msi_populate_sysfs():

  BUG: unable to handle page fault for address: fffffffffffffff4
  ...
  Call Trace:
   msi_destroy_sysfs+0x30/0xa0
   free_msi_irqs+0x11d/0x1b0

Fixes: 2f170814bd ("genirq/msi: Move MSI sysfs handling from PCI to MSI core")
Link: https://lore.kernel.org/r/20211012071556.939137-1-wanghai38@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Barry Song <song.bao.hua@hisilicon.com>
2021-10-12 20:32:58 -05:00
Linus Torvalds
f84fc4e36c s390 update for v5.15-rc5
- Fix potential memory leak on a error path in eBPF.
 
 - Fix handling of zpci device on reserve.
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Merge tag 's390-5.15-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Vasily Gorbik:

 - Fix potential memory leak on a error path in eBPF

 - Fix handling of zpci device on reserve

* tag 's390-5.15-5' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/pci: fix zpci_zdev_put() on reserve
  bpf, s390: Fix potential memory leak about jit_data
2021-10-08 16:46:09 -07:00
Linus Torvalds
cdc726fb35 ACPI fix for 5.15-rc5
Fix a recent ACPI-related regression in the PCI subsystem that
 introduced a NULL pointer dereference possible to trigger from
 user space via sysfs on some systems.
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Merge tag 'acpi-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a recent ACPI-related regression in the PCI subsystem that
  introduced a NULL pointer dereference possible to trigger from
  user space via sysfs on some systems"

* tag 'acpi-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI: ACPI: Check parent pointer in acpi_pci_find_companion()
2021-10-08 11:49:30 -07:00
Linus Torvalds
52bf8031c0 hyperv-fixes for 5.15
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Merge tag 'hyperv-fixes-signed-20211007' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - Replace uuid.h with types.h in a header (Andy Shevchenko)

 - Avoid sleeping in atomic context in PCI driver (Long Li)

 - Avoid sending IPI to self when it shouldn't (Vitaly Kuznetsov)

* tag 'hyperv-fixes-signed-20211007' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Avoid erroneously sending IPI to 'self'
  hyper-v: Replace uuid.h with types.h
  PCI: hv: Fix sleep while in non-sleep context when removing child devices from the bus
2021-10-07 09:44:48 -07:00
Rafael J. Wysocki
3fb937f441 PCI: ACPI: Check parent pointer in acpi_pci_find_companion()
If acpi_pci_find_companion() is called for a device whose parent
pointer is NULL, it will crash when attempting to get the ACPI
companion of the parent due to a NULL pointer dereference in
the ACPI_COMPANION() macro.

This was not a problem before commit 375553a932 ("PCI: Setup ACPI
fwnode early and at the same time with OF") that made pci_setup_device()
call pci_set_acpi_fwnode() and so it allowed devices with NULL parent
pointers to be passed to acpi_pci_find_companion() which is the case
in pci_iov_add_virtfn(), for instance.

Fix this issue by making acpi_pci_find_companion() check the device's
parent pointer upfront and bail out if it is NULL.

While pci_iov_add_virtfn() can be changed to set the device's parent
pointer before calling pci_setup_device() for it, checking pointers
against NULL before dereferencing them is prudent anyway and looking
for ACPI companions of virtual functions isn't really useful.

Fixes: 375553a932 ("PCI: Setup ACPI fwnode early and at the same time with OF")
Link: https://lore.kernel.org/linux-acpi/8e4bbd5c59de31db71f718556654c0aa077df03d.camel@linux.ibm.com/
Reported-by: Niklas Schnelle <schnelle@linux.ibm.com>
Tested-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
2021-10-07 18:42:44 +02:00
Niklas Schnelle
a46044a92a s390/pci: fix zpci_zdev_put() on reserve
Since commit 2a671f77ee ("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: 2a671f77ee ("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
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: 94d2276320 ("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
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
6d2e369f0d ("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 375553a932 ("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: 375553a932 ("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
7bac54497c ("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: 7bac54497c ("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
Bjorn Helgaas
a549a33c37 Merge branch 'pci/visconti'
- Add Toshiba Visconti PCIe host controller driver (Nobuhiro Iwamatsu)

* pci/visconti:
  MAINTAINERS: Add entries for Toshiba Visconti PCIe controller
  PCI: visconti: Add Toshiba Visconti PCIe host controller driver
2021-09-02 14:56:46 -05:00
Bjorn Helgaas
0e52059a82 Merge branch 'pci/rockchip-dwc'
- Add Rockchip RK356X host controller driver (Simon Xue)

* pci/rockchip-dwc:
  PCI: rockchip-dwc: Add Rockchip RK356X host controller driver
2021-09-02 14:56:45 -05:00
Bjorn Helgaas
bd8bb4d097 Merge branch 'pci/dwc'
- Remove surplus break statement (Krzysztof Wilczyński)

* pci/dwc:
  PCI: dwc: Remove surplus break statement after return
2021-09-02 14:56:45 -05:00
Bjorn Helgaas
dbf0b9bad0 Merge branch 'pci/artpec6'
- Remove surplus break statement and local code block (Krzysztof
  Wilczyński)

* pci/artpec6:
  PCI: artpec6: Remove local code block from switch statement
  PCI: artpec6: Remove surplus break statement after return
2021-09-02 14:56:45 -05:00
Bjorn Helgaas
739c4747a2 Merge branch 'pci/misc'
- Add pci_numachip_init() declaration (Krzysztof Wilczyński)

- Allocate pci_dev_str_match_path() string atomically (Dan Carpenter)

- Drop error message when Precision Time Measurement supported but not
  enabled (Jakub Kicinski)

- Correct the pci_iomap.h header guard #endif comment (Jonathan Cameron)

- Add schedule point in proc_bus_pci_read() (Krzysztof Wilczyński)

- Make saved capability state private to core (Bjorn Helgaas)

- Sync __pci_register_driver() stub for CONFIG_PCI=n (Andy Shevchenko)

- Convert sta2x11 from PCI-DMA-API to generic DMA-API (Christophe JAILLET)

* pci/misc:
  x86/PCI: sta2x11: switch from 'pci_' to 'dma_' API
  PCI: Sync __pci_register_driver() stub for CONFIG_PCI=n
  PCI: Make saved capability state private to core
  PCI: Add schedule point in proc_bus_pci_read()
  PCI: Correct the pci_iomap.h header guard #endif comment
  PCI/PTM: Remove error message at boot
  PCI: Fix pci_dev_str_match_path() alloc while atomic bug
  x86/PCI: Add pci_numachip_init() declaration

# Conflicts:
#	include/linux/pci.h
2021-09-02 14:56:44 -05:00
Bjorn Helgaas
74797618e2 Merge branch 'pci/vpd'
- Check Resource Item Names against those defined for type (Bjorn Helgaas)

- Treat initial 0xff as missing EEPROM (Heiner Kallweit)

- Reject resource tags with invalid size (Bjorn Helgaas)

- Don't check Large Resource Item Names for validity (Bjorn Helgaas)

- Allow access to valid parts of VPD if some is invalid (Bjorn Helgaas)

- Remove pci_vpd_size() old_size argument (Heiner Kallweit)

- Make pci_vpd_wait() uninterruptible (Heiner Kallweit)

- Remove struct pci_vpd.flag (Heiner Kallweit)

- Remove struct pci_vpd_ops (Heiner Kallweit)

- Remove struct pci_vpd.valid member (Heiner Kallweit)

- Embed struct pci_vpd in struct pci_dev (Heiner Kallweit)

- Determine VPD size in pci_vpd_init() (Heiner Kallweit)

- Treat invalid VPD like missing VPD capability (Heiner Kallweit)

- Add pci_vpd_alloc() to allocate buffer and read VPD into it (Heiner
  Kallweit)

- Add pci_vpd_find_ro_info_keyword() (Heiner Kallweit)

- Add pci_vpd_check_csum() (Heiner Kallweit)

- Add pci_vpd_find_id_string() (Heiner Kallweit)

- Read VPD with pci_vpd_alloc() (bnx2x, bnxt, sfc, sfc falcon, tg3 drivers)
  (Heiner Kallweit)

- Search VPD with pci_vpd_find_ro_info_keyword() (bnx2, bnx2x, bnxt, cxgb4,
  cxlflash SCSI, sfc, sfc falcon, tg3 drivers) (Heiner Kallweit)

- Search VPD with pci_vpd_find_id_string() (cxgb4 driver) (Heiner Kallweit)

- Validate VPD checksum with pci_vpd_check_csum() (cxgb4, tg3 drivers)
  (Heiner Kallweit)

- Replace open-coded byte swapping with swab32s() in bnx2 (Heiner Kallweit)

- Remove unused vpd_param member ec (Heiner Kallweit)

- Stop exporting pci_vpd_find_tag(), pci_vpd_find_info_keyword() (Heiner
  Kallweit)

- Move several VPD defines and inlines to internal PCI core (Heiner
  Kallweit)

* pci/vpd:
  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()
  scsi: cxlflash: Search VPD with pci_vpd_find_ro_info_keyword()
  cxgb4: Search VPD with pci_vpd_find_ro_info_keyword()
  cxgb4: Remove unused vpd_param member ec
  cxgb4: Validate VPD checksum with pci_vpd_check_csum()
  bnxt: Search VPD with pci_vpd_find_ro_info_keyword()
  bnxt: Read VPD with pci_vpd_alloc()
  bnx2x: Search VPD with pci_vpd_find_ro_info_keyword()
  bnx2x: Read VPD with pci_vpd_alloc()
  bnx2: Replace open-coded byte swapping with swab32s()
  bnx2: Search VPD with pci_vpd_find_ro_info_keyword()
  sfc: falcon: Search VPD with pci_vpd_find_ro_info_keyword()
  sfc: falcon: Read VPD with pci_vpd_alloc()
  tg3: Search VPD with pci_vpd_find_ro_info_keyword()
  tg3: Validate VPD checksum with pci_vpd_check_csum()
  tg3: Read VPD with pci_vpd_alloc()
  sfc: Search VPD with pci_vpd_find_ro_info_keyword()
  sfc: Read VPD with pci_vpd_alloc()
  PCI/VPD: Add pci_vpd_check_csum()
  PCI/VPD: Add pci_vpd_find_ro_info_keyword()
  PCI/VPD: Add pci_vpd_alloc()
  PCI/VPD: Treat invalid VPD like missing VPD capability
  PCI/VPD: Determine VPD size in pci_vpd_init()
  PCI/VPD: Embed struct pci_vpd in struct pci_dev
  PCI/VPD: Remove struct pci_vpd.valid member
  PCI/VPD: Remove struct pci_vpd_ops
  PCI/VPD: Reorder pci_read_vpd(), pci_write_vpd()
  PCI/VPD: Remove struct pci_vpd.flag
  PCI/VPD: Make pci_vpd_wait() uninterruptible
  PCI/VPD: Remove pci_vpd_size() old_size argument
  PCI/VPD: Allow access to valid parts of VPD if some is invalid
  PCI/VPD: Don't check Large Resource Item Names for validity
  PCI/VPD: Reject resource tags with invalid size
  PCI/VPD: Treat initial 0xff as missing EEPROM
  PCI/VPD: Check Resource Item Names against those valid for type
  PCI/VPD: Correct diagnostic for VPD read failure
2021-09-02 14:56:44 -05:00
Bjorn Helgaas
1295d187ab Merge branch 'pci/virtualization'
- Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms (Wasim Khan)

- Add ACS quirks for Cavium multi-function devices (George Cherian)

- Enforce pci=noats with Transaction Blocking (Alex Williamson)

* pci/virtualization:
  PCI/ACS: Enforce pci=noats with Transaction Blocking
  PCI: Add ACS quirks for Cavium multi-function devices
  PCI: Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms
2021-09-02 14:56:43 -05:00
Bjorn Helgaas
9045f63e67 Merge branch 'pci/resource'
- Refactor pci_ioremap_bar() and pci_ioremap_wc_bar() (Krzysztof
  Wilczyński)

- Optimize pci_resource_len() to reduce kernel size (Zhen Lei)

* pci/resource:
  PCI: Optimize pci_resource_len() to reduce kernel size
  PCI: Refactor pci_ioremap_bar() and pci_ioremap_wc_bar()
2021-09-02 14:56:43 -05:00
Bjorn Helgaas
e210d9fc09 Merge branch 'pci/reset'
- Cache PCIe Device Capabilities register (Amey Narkhede)

- Add pcie_reset_flr() with 'probe' argument (Amey Narkhede)

- Add pdev->reset_methods[] array to track reset method ordering (Amey
  Narkhede)

- Remove reset_fn field from pci_dev (Amey Narkhede)

- Add sysfs interface to query and set device reset mechanism (Amey
  Narkhede)

- Add pci_set_acpi_fwnode() to set ACPI_COMPANION (Shanker Donthineni)

- Use acpi_pci_power_manageable() instead of duplicating logic (Shanker
  Donthineni)

- Set ACPI fwnode early and at the same time with OF (Shanker Donthineni)

- Add support for ACPI _RST reset method (Shanker Donthineni)

- Change reset function 'probe' argument to bool (Amey Narkhede)

* pci/reset:
  PCI: Change the type of probe argument in reset functions
  PCI: Add support for ACPI _RST reset method
  PCI: Setup ACPI fwnode early and at the same time with OF
  PCI: Use acpi_pci_power_manageable()
  PCI: Add pci_set_acpi_fwnode() to set ACPI_COMPANION
  PCI: Allow userspace to query and set device reset mechanism
  PCI: Remove reset_fn field from pci_dev
  PCI: Add array to track reset method ordering
  PCI: Add pcie_reset_flr() with 'probe' argument
  PCI: Cache PCIe Device Capabilities register
2021-09-02 14:56:42 -05:00
Bjorn Helgaas
34627f4dcd Merge branch 'pci/portdrv'
- Enable Bandwidth Notification only if port supports it (Stuart Hayes)

* pci/portdrv:
  PCI/portdrv: Enable Bandwidth Notification only if port supports it
2021-09-02 14:56:42 -05:00
Bjorn Helgaas
03816e7f78 Merge branch 'pci/irq'
- Convert irq_find_mapping() + generic_handle_irq() to
  generic_handle_domain_irq() (Marc Zyngier)

* pci/irq:
  PCI: Bulk conversion to generic_handle_domain_irq()
2021-09-02 14:56:42 -05:00
Bjorn Helgaas
9d102c7437 Merge branch 'pci/iommu'
- Allow PASID on fake PCIe devices, e.g., HiSilicon KunPeng920 and
  KunPeng930 AMBA devices, without TLP prefixes (Zhangfei Gao)

- Allow SVA / dma-can-stall on fake PCIe devices (Zhangfei Gao)

* pci/iommu:
  PCI: Set dma-can-stall for HiSilicon chips
  PCI: Allow PASID on fake PCIe devices without TLP prefixes
2021-09-02 14:56:41 -05:00
Bjorn Helgaas
4f6f0b86d3 Merge branch 'pci/hotplug'
- Fix ibmphp double unmap of io_mem (Vishal Aslot)

* pci/hotplug:
  PCI: ibmphp: Fix double unmap of io_mem
2021-09-02 14:56:41 -05:00
Vishal Aslot
faa2e05ad0 PCI: ibmphp: Fix double unmap of io_mem
ebda_rsrc_controller() calls iounmap(io_mem) on the error path. Its caller,
ibmphp_access_ebda(), also calls iounmap(io_mem) on good and error paths.

Remove the iounmap(io_mem) invocation from ebda_rsrc_controller().

[bhelgaas: remove item from TODO]
Link: https://lore.kernel.org/r/20210818165751.591185-1-os.vaslot@gmail.com
Signed-off-by: Vishal Aslot <os.vaslot@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2021-09-02 12:02:50 -05:00
Rafael J. Wysocki
59dc33252e PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus
On some systems, in order to get to the deepest low-power state of
the platform (which may be necessary to save significant enough
amounts of energy while suspended to idle. for example), devices on
the PCI bus exposed by the VMD driver need to be power-managed via
ACPI.  However, the layout of the ACPI namespace below the VMD
controller device object does not reflect the layout of the PCI bus
under the VMD host bridge, so in order to identify the ACPI companion
objects for the devices on that bus, it is necessary to use a special
_ADR encoding on the ACPI side.  In other words, acpi_pci_find_companion()
does not work for these devices, so it needs to be amended with a
special lookup logic specific to the VMD bus.

Address this issue by allowing the VMD driver to temporarily install
an ACPI companion lookup hook containing the code matching the devices
on the VMD PCI bus with the corresponding objects in the ACPI
namespace.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Jon Derrick <jonathan.derrick@intel.com>
2021-09-02 17:59:58 +02:00
Linus Torvalds
c6c3c5704b Driver core update for 5.15-rc1
Here is the big set of driver core patches for 5.15-rc1.
 
 These do change a number of different things across different
 subsystems, and because of that, there were 2 stable tags created that
 might have already come into your tree from different pulls that did the
 following
 	- changed the bus remove callback to return void
 	- sysfs iomem_get_mapping rework
 
 The latter one will cause a tiny merge issue with your tree, as there
 was a last-minute fix for this in 5.14 in your tree, but the fixup
 should be "obvious".  If you want me to provide a fixed merge for this,
 please let me know.
 
 Other than those two things, there's only a few small things in here:
 	- kernfs performance improvements for huge numbers of sysfs
 	  users at once
 	- tiny api cleanups
 	- other minor changes
 
 All of these have been in linux-next for a while with no reported
 problems, other than the before-mentioned merge issue.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the big set of driver core patches for 5.15-rc1.

  These do change a number of different things across different
  subsystems, and because of that, there were 2 stable tags created that
  might have already come into your tree from different pulls that did
  the following

   - changed the bus remove callback to return void

   - sysfs iomem_get_mapping rework

  Other than those two things, there's only a few small things in here:

   - kernfs performance improvements for huge numbers of sysfs users at
     once

   - tiny api cleanups

   - other minor changes

  All of these have been in linux-next for a while with no reported
  problems, other than the before-mentioned merge issue"

* tag 'driver-core-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (33 commits)
  MAINTAINERS: Add dri-devel for component.[hc]
  driver core: platform: Remove platform_device_add_properties()
  ARM: tegra: paz00: Handle device properties with software node API
  bitmap: extend comment to bitmap_print_bitmask/list_to_buf
  drivers/base/node.c: use bin_attribute to break the size limitation of cpumap ABI
  topology: use bin_attribute to break the size limitation of cpumap ABI
  lib: test_bitmap: add bitmap_print_bitmask/list_to_buf test cases
  cpumask: introduce cpumap_print_list/bitmask_to_buf to support large bitmask and list
  sysfs: Rename struct bin_attribute member to f_mapping
  sysfs: Invoke iomem_get_mapping() from the sysfs open callback
  debugfs: Return error during {full/open}_proxy_open() on rmmod
  zorro: Drop useless (and hardly used) .driver member in struct zorro_dev
  zorro: Simplify remove callback
  sh: superhyway: Simplify check in remove callback
  nubus: Simplify check in remove callback
  nubus: Make struct nubus_driver::remove return void
  kernfs: dont call d_splice_alias() under kernfs node lock
  kernfs: use i_lock to protect concurrent inode updates
  kernfs: switch kernfs to use an rwsem
  kernfs: use VFS negative dentry caching
  ...
2021-09-01 08:44:42 -07:00
Sergio Miguéns Iglesias
f956c1b0d5 xen/pcifront: Removed unnecessary __ref annotation
An unnecessary "__ref" annotation was removed from the
"drivers/pci/xen_pcifront.c" file. The function where the annotation
was used was "pcifront_backend_changed()", which does not call any
functions annotated as "__*init" nor "__*exit". This makes "__ref"
unnecessary since this annotation is used to make the compiler ignore
section miss-matches when they are not happening here in the first
place.

In addition to the aforementioned change, some code style issues were
fixed in the same file.

Signed-off-by: Sergio Miguéns Iglesias <sergio@lony.xyz>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20210830175305.13370-1-sergio@lony.xyz
Signed-off-by: Juergen Gross <jgross@suse.com>
2021-09-01 10:38:42 +02:00
Linus Torvalds
9e9fb7655e Core:
- Enable memcg accounting for various networking objects.
 
 BPF:
 
  - Introduce bpf timers.
 
  - Add perf link and opaque bpf_cookie which the program can read
    out again, to be used in libbpf-based USDT library.
 
  - Add bpf_task_pt_regs() helper to access user space pt_regs
    in kprobes, to help user space stack unwinding.
 
  - Add support for UNIX sockets for BPF sockmap.
 
  - Extend BPF iterator support for UNIX domain sockets.
 
  - Allow BPF TCP congestion control progs and bpf iterators to call
    bpf_setsockopt(), e.g. to switch to another congestion control
    algorithm.
 
 Protocols:
 
  - Support IOAM Pre-allocated Trace with IPv6.
 
  - Support Management Component Transport Protocol.
 
  - bridge: multicast: add vlan support.
 
  - netfilter: add hooks for the SRv6 lightweight tunnel driver.
 
  - tcp:
     - enable mid-stream window clamping (by user space or BPF)
     - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
     - more accurate DSACK processing for RACK-TLP
 
  - mptcp:
     - add full mesh path manager option
     - add partial support for MP_FAIL
     - improve use of backup subflows
     - optimize option processing
 
  - af_unix: add OOB notification support.
 
  - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by
          the router.
 
  - mac80211: Target Wake Time support in AP mode.
 
  - can: j1939: extend UAPI to notify about RX status.
 
 Driver APIs:
 
  - Add page frag support in page pool API.
 
  - Many improvements to the DSA (distributed switch) APIs.
 
  - ethtool: extend IRQ coalesce uAPI with timer reset modes.
 
  - devlink: control which auxiliary devices are created.
 
  - Support CAN PHYs via the generic PHY subsystem.
 
  - Proper cross-chip support for tag_8021q.
 
  - Allow TX forwarding for the software bridge data path to be
    offloaded to capable devices.
 
 Drivers:
 
  - veth: more flexible channels number configuration.
 
  - openvswitch: introduce per-cpu upcall dispatch.
 
  - Add internet mix (IMIX) mode to pktgen.
 
  - Transparently handle XDP operations in the bonding driver.
 
  - Add LiteETH network driver.
 
  - Renesas (ravb):
    - support Gigabit Ethernet IP
 
  - NXP Ethernet switch (sja1105)
    - fast aging support
    - support for "H" switch topologies
    - traffic termination for ports under VLAN-aware bridge
 
  - Intel 1G Ethernet
     - support getcrosststamp() with PCIe PTM (Precision Time
       Measurement) for better time sync
     - support Credit-Based Shaper (CBS) offload, enabling HW traffic
       prioritization and bandwidth reservation
 
  - Broadcom Ethernet (bnxt)
     - support pulse-per-second output
     - support larger Rx rings
 
  - Mellanox Ethernet (mlx5)
     - support ethtool RSS contexts and MQPRIO channel mode
     - support LAG offload with bridging
     - support devlink rate limit API
     - support packet sampling on tunnels
 
  - Huawei Ethernet (hns3):
     - basic devlink support
     - add extended IRQ coalescing support
     - report extended link state
 
  - Netronome Ethernet (nfp):
     - add conntrack offload support
 
  - Broadcom WiFi (brcmfmac):
     - add WPA3 Personal with FT to supported cipher suites
     - support 43752 SDIO device
 
  - Intel WiFi (iwlwifi):
     - support scanning hidden 6GHz networks
     - support for a new hardware family (Bz)
 
  - Xen pv driver:
     - harden netfront against malicious backends
 
  - Qualcomm mobile
     - ipa: refactor power management and enable automatic suspend
     - mhi: move MBIM to WWAN subsystem interfaces
 
 Refactor:
 
  - Ambient BPF run context and cgroup storage cleanup.
 
  - Compat rework for ndo_ioctl.
 
 Old code removal:
 
  - prism54 remove the obsoleted driver, deprecated by the p54 driver.
 
  - wan: remove sbni/granch driver.
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Enable memcg accounting for various networking objects.

  BPF:

   - Introduce bpf timers.

   - Add perf link and opaque bpf_cookie which the program can read out
     again, to be used in libbpf-based USDT library.

   - Add bpf_task_pt_regs() helper to access user space pt_regs in
     kprobes, to help user space stack unwinding.

   - Add support for UNIX sockets for BPF sockmap.

   - Extend BPF iterator support for UNIX domain sockets.

   - Allow BPF TCP congestion control progs and bpf iterators to call
     bpf_setsockopt(), e.g. to switch to another congestion control
     algorithm.

  Protocols:

   - Support IOAM Pre-allocated Trace with IPv6.

   - Support Management Component Transport Protocol.

   - bridge: multicast: add vlan support.

   - netfilter: add hooks for the SRv6 lightweight tunnel driver.

   - tcp:
       - enable mid-stream window clamping (by user space or BPF)
       - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
       - more accurate DSACK processing for RACK-TLP

   - mptcp:
       - add full mesh path manager option
       - add partial support for MP_FAIL
       - improve use of backup subflows
       - optimize option processing

   - af_unix: add OOB notification support.

   - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the
     router.

   - mac80211: Target Wake Time support in AP mode.

   - can: j1939: extend UAPI to notify about RX status.

  Driver APIs:

   - Add page frag support in page pool API.

   - Many improvements to the DSA (distributed switch) APIs.

   - ethtool: extend IRQ coalesce uAPI with timer reset modes.

   - devlink: control which auxiliary devices are created.

   - Support CAN PHYs via the generic PHY subsystem.

   - Proper cross-chip support for tag_8021q.

   - Allow TX forwarding for the software bridge data path to be
     offloaded to capable devices.

  Drivers:

   - veth: more flexible channels number configuration.

   - openvswitch: introduce per-cpu upcall dispatch.

   - Add internet mix (IMIX) mode to pktgen.

   - Transparently handle XDP operations in the bonding driver.

   - Add LiteETH network driver.

   - Renesas (ravb):
       - support Gigabit Ethernet IP

   - NXP Ethernet switch (sja1105):
       - fast aging support
       - support for "H" switch topologies
       - traffic termination for ports under VLAN-aware bridge

   - Intel 1G Ethernet
       - support getcrosststamp() with PCIe PTM (Precision Time
         Measurement) for better time sync
       - support Credit-Based Shaper (CBS) offload, enabling HW traffic
         prioritization and bandwidth reservation

   - Broadcom Ethernet (bnxt)
       - support pulse-per-second output
       - support larger Rx rings

   - Mellanox Ethernet (mlx5)
       - support ethtool RSS contexts and MQPRIO channel mode
       - support LAG offload with bridging
       - support devlink rate limit API
       - support packet sampling on tunnels

   - Huawei Ethernet (hns3):
       - basic devlink support
       - add extended IRQ coalescing support
       - report extended link state

   - Netronome Ethernet (nfp):
       - add conntrack offload support

   - Broadcom WiFi (brcmfmac):
       - add WPA3 Personal with FT to supported cipher suites
       - support 43752 SDIO device

   - Intel WiFi (iwlwifi):
       - support scanning hidden 6GHz networks
       - support for a new hardware family (Bz)

   - Xen pv driver:
       - harden netfront against malicious backends

   - Qualcomm mobile
       - ipa: refactor power management and enable automatic suspend
       - mhi: move MBIM to WWAN subsystem interfaces

  Refactor:

   - Ambient BPF run context and cgroup storage cleanup.

   - Compat rework for ndo_ioctl.

  Old code removal:

   - prism54 remove the obsoleted driver, deprecated by the p54 driver.

   - wan: remove sbni/granch driver"

* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits)
  net: Add depends on OF_NET for LiteX's LiteETH
  ipv6: seg6: remove duplicated include
  net: hns3: remove unnecessary spaces
  net: hns3: add some required spaces
  net: hns3: clean up a type mismatch warning
  net: hns3: refine function hns3_set_default_feature()
  ipv6: remove duplicated 'net/lwtunnel.h' include
  net: w5100: check return value after calling platform_get_resource()
  net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
  net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()
  net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()
  fou: remove sparse errors
  ipv4: fix endianness issue in inet_rtm_getroute_build_skb()
  octeontx2-af: Set proper errorcode for IPv4 checksum errors
  octeontx2-af: Fix static code analyzer reported issues
  octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg
  octeontx2-af: Fix loop in free and unmap counter
  af_unix: fix potential NULL deref in unix_dgram_connect()
  dpaa2-eth: Replace strlcpy with strscpy
  octeontx2-af: Use NDC TX for transmit packet data
  ...
2021-08-31 16:43:06 -07:00