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Merge tag 'pci-v7.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Remove MPS/MRRS Kconfig settings (CONFIG_PCIE_BUS_*) that worked
around a WiFi device defect; use a quirk or boot-time
"pci=pcie_bus_tune_*" kernel parameter instead (Bjorn Helgaas)
- Always lift 2.5GT/s restriction in PCIe failed link retraining to
avoid clamping a link to 2.5GT/s after hot-plug changes the device
(Maciej W. Rozycki)
- Request bus reassignment when not probe-only to fix an enumeration
regression on Marvell CN106XX and possibly other DT-based systems
(Ratheesh Kannoth)
- Fix procfs race between pci_proc_init() and pci_bus_add_device()
that resulted in 'proc_dir_entry ... already registered' warnings
and pointer corruption (Krzysztof Wilczyński)
- Fix sysfs race that causes 'duplicate filename' warnings and boot
panics by converting PCI resource files to static attributes
(Krzysztof Wilczyński)
- Expose sysfs 'resourceN_resize' attributes only on platforms with
PCI mmap (Krzysztof Wilczyński)
- Require CAP_SYS_ADMIN to write to sysfs 'resourceN_resize'
attributes (Krzysztof Wilczyński)
- Add security_locked_down(LOCKDOWN_PCI_ACCESS) to alpha PCI resource
mmap path to match the generic path (Krzysztof Wilczyński)
- Use kstrtobool() to parse the 'rom' attribute input to avoid the
unexpected behavior of enabling the ROM when writing '0' with no
trailing newline (Krzysztof Wilczyński)
Resource management:
- Improve resource claim logging for debuggability (Ilpo Järvinen)
- Clean up several uses of const parameters (Ilpo Järvinen)
- Check option ROM header signatures and lengths before accessing to
avoid page faults and alignment faults (Guixin Liu)
ASPM:
- Don't reconfigure ASPM when entering low-power D-state; only do it
when returning back to D0 (Carlos Bilbao)
Power management:
- During suspend, set power state to 'unknown' for all devices, not
just those with drivers (Lukas Wunner)
- Skip restoring Resizable BARs and VF Resizable BARs if device
doesn't respond to config reads, to avoid invalid array accesses
(Marco Nenciarini)
- Add pci_suspend_retains_context() so drivers can tell whether
devices retain internal state across suspend/resume, since some
platforms reset devices on suspend; use this in nvme to avoid
issues on Qcom RCs (Manivannan Sadhasivam)
Power control:
- Only to power on/off devices that actually support power control to
avoid poking at incompatible devices mentioned in DT (Manivannan
Sadhasivam)
Virtualization and resets:
- Log device readiness timeouts as errors, not warnings, because the
device is likely unusable in this case (Bjorn Helgaas)
- Wait for device readiness after soft reset (D3hot ->
D0uninitialized transition), when the device may respond with
Request Retry Status (RRS) if it needs more time to initialize
(Bjorn Helgaas)
- Drop unnecessary retries when restoring BARs because resets should
now already include all required delays (Lukas Wunner)
- Avoid FLR for MediaTek MT7925 WiFi, where FLR fails after a VM
terminates uncleanly (Jose Ignacio Tornos Martinez)
- Avoid SBR for Qualcomm WCN6855/WCN7850 WiFi, SDX62/SDX65 modems,
which seem not to support it correctly (Jose Ignacio Tornos
Martinez)
Peer-to-peer DMA:
- Prevent P2PDMA as well as CPU access to non-mappable BARs, e.g.,
s390 ISM BARs (Matt Evans)
- Add Intel QAT, DSA, IAA devices to whitelist (Lukas Wunner)
Endpoint framework:
- Add endpoint controller APIs for use by function drivers to
discover auxiliary blocks like DMA engines (Koichiro Den)
- Remember DesignWare eDMA engine base/size and expose them via the
EPC aux-resource API (Koichiro Den)
- Add endpoint embedded doorbell fallback, used if MSI allocation
fails (Koichiro Den)
- Validate BAR index and remove dead BAR read in endpoint doorbell
test (Carlos Bilbao)
- Unwind MSI/MSI-X vectors if NTB initialization fails part-way
through (Koichiro Den)
- Cache sleepable pci_irq_vector() value at ISR setup to avoid
calling it from hardirq context (Koichiro Den)
- Call sleepable pci_epc_raise_irq() from a work item instead of
atomic context, e.g., when setting bits in NTB peer doorbells in
the ntb_peer_db_set() path (Koichiro Den)
- Report 0-based vNTB doorbell vector to account for link event 0 and
historically skipped slot 1 (Koichiro Den)
- Prevent configfs writes to vNTB db_count and other values that are
already in use after EPC attach (Koichiro Den)
- Account for vNTB db_valid reserved slots (link event 0 and
historically skipped slot 1) so they don't appear as valid
doorbells (Koichiro Den)
- Implement vNTB .db_vector_count()/mask() for doorbells so clients
can use multiple vectors and avoid thundering herds (Koichiro Den)
- Report 0-based NTB doorbell vector to account for link event 0 and
historically skipped slot 1 (Koichiro Den)
- Fix doorbell bitmask and IRQ vector handling to clear only
specified bits, use the correct vector for non-contiguous Linux IRQ
numbers, and validate incoming vectors (Koichiro Den)
- Implement NTB .db_vector_count()/mask() for doorbells so clients
can use multiple vectors (Koichiro Den)
Native PCIe controller infrastructure:
- Add pci_host_common_link_train_delay() for the mandatory delay
after > 5GT/s Link training completes and use it for cadence HPA,
j721e, LGA; dwc; aardvark, mediatek-gen3, rzg3s (Hans Zhang)
- Protect root bus removal with rescan lock in altera, brcmstb,
cadence, dwc, iproc, mediatek, plda, rockchip to prevent
use-after-free or crashes when racing with sysfs rescan or hotplug
(Hans Zhang)
- Add pci_host_common_parse_ports() for use by any native driver to
parse Root Port properties (per-Link features like width, speed,
PHY, power and reset control, etc should be described in Root Port
stanzas, not the host bridge; currently only reset GPIOs
implemented) (Sherry Sun)
New native PCIe controller drivers:
- Add DT binding and driver for UltraRISC DP1000 PCIe controller
(Xincheng Zhang, Jia Wang)
Altera PCIe controller driver:
- Do not dispose of the parent IRQ mapping, which belongs to the
parent interrupt controller (Mahesh Vaidya)
- Fix chained IRQ handler ordering issue and resource leaks on probe
failure (Mahesh Vaidya)
AMD MDB PCIe controller driver:
- Assert PERST# on shutdown so any connected Endpoints are held in
reset during shutdown (Sai Krishna Musham)
Amlogic Meson PCIe controller driver:
- Propagate devm_add_action_or_reset() failure to fix probe error
path (Shuvam Pandey)
- Add .remove() callback to deinitialize the host bridge and power
off the PHY (Shuvam Pandey)
Broadcom iProc PCIe controller driver:
- Restore .map_irq() assignment; its removal broke INTx on the iproc
platform bus driver (Mark Tomlinson)
Broadcom STB PCIe controller driver:
- No change, but products using certain WiFi devices may be affected
by removal of CONFIG_PCIE_BUS_* (see above)
Freescale i.MX6 PCIe controller driver:
- Move IMX6SX_GPR12_PCIE_TEST_POWERDOWN handling into the core reset
functions (Richard Zhu)
- Assert PERST# before enabling regulators to ensure that even if
power is enabled, endpoint stays inactive until REFCLK is stable
(Sherry Sun)
- Parse reset properties in Root Port nodes (falling back to host
bridge) to help support Key E connectors and the pwrctrl framework
(Sherry Sun)
- Configure i.MX95 REF_USE_PAD before PHY reset (Richard Zhu)
- Assert i.MX95 ref_clk_en after reference clock stabilizes (Richard
Zhu)
- Integrate new pwrctrl API for DTs with Root Port-level power
supplies (Sherry Sun)
Intel Gateway PCIe controller driver:
- Enable clock before PHY init for correct ordering (Florian Eckert)
- Add .start_link() callback so the driver works again (Florian
Eckert)
- Stop overwriting the ATU base address discovered by
dw_pcie_get_resources() (Florian Eckert)
- Add DT 'atu' region since this is hardware-specific, and fall back
to driver default if lacking (Florian Eckert)
Loongson PCIe controller driver:
- Ignore downstream devices only on internal bridges to avoid
Loongson hardware issue (Rong Zhang)
- Quirk old Loongson-3C6000 bridges that advertise incorrect
supported link speeds (Ziyao Li)
Marvell MVEBU PCIe controller driver:
- Use fixed-width interrupt masks to avoid truncation in 64-bit
builds (Rosen Penev)
MediaTek PCIe controller driver:
- Use FIELD_PREP() to fix incorrect operator precedence in
PCIE_FTS_NUM_L0 (Li RongQing)
- Fix IRQ domain leak when port fails to enable (Manivannan
Sadhasivam)
- Use actual physical address for MSI message address instead of
virt_to_phys() (Manivannan Sadhasivam)
- Add EcoNet EN7528 to DT binding (Caleb James DeLisle)
MediaTek PCIe Gen3 controller driver:
- Deassert PCIE_PHY_RSTB so REFCLK is stable for at least 100ms
(PCIE_T_PVPERL_MS) before deasserting PERST# (Jian Yang)
- Add .shutdown() to assert PERST# before powering down device (Jian
Yang)
- Do full device power down on removal, including asserting PERST#,
when removing driver (Chen-Yu Tsai)
- Fix a 'failed to create pwrctrl devices' error message that was
inadvertently skipped (Chen-Yu Tsai)
NVIDIA Tegra194 PCIe controller driver:
- Program the DesignWare PORT_AFR L1 entrance latency based on the
'aspm-l1-entry-delay-ns' DT property (Manikanta Maddireddy)
Qualcomm PCIe controller driver:
- Add Eliza SoC compatible in DT binding (Krishna Chaitanya Chundru)
- Set max OPP during resume so DBI register accesses don't fail with
NoC errors (Qiang Yu)
- Add pci_host_common_d3cold_possible() to determine whether
downstream devices are already in D3hot and wakeup-enabled devices
are capable of generating PME from D3cold (Krishna Chaitanya
Chundru)
- Add .get_ltssm() callback to get the LTSSM status without DBI,
since DBI may be inaccessible after PME_Turn_Off (Krishna Chaitanya
Chundru)
- Power down PHY via PARF_PHY_CTRL before disabling rails/clocks to
avoid power leakage (Krishna Chaitanya Chundru)
- Decide whether suspend should put the link in L2 and power down
using pci_host_common_d3cold_possible() instead of checking whether
ASPM L1 is enabled (Krishna Chaitanya Chundru)
- Add qcom D3cold support to tear down interconnect bandwidth and OPP
votes (Krishna Chaitanya Chundru)
- Handle unsupported mixed PERST#/PHY DT configurations, e.g., PHY in
RP node while PERST# is in the RC node, but warn about the DT issue
(Qiang Yu)
- Program T_POWER_ON based on DT 't-power-on-us' property in case
hardware advertises incorrect values (Krishna Chaitanya Chundru)
- Disable ASPM L0s for SA8775P (Shawn Guo)
- Initialize DWC MSI lock for firmware-managed ECAM hosts, which
don't use the dw_pcie_host_init() path that initializes the lock
(Yadu M G)
Renesas RZ/G3S PCIe controller driver:
- Add RZ/V2N DT support (Lad Prabhakar)
SOPHGO PCIe controller driver:
- Add 'dma-coherent' DT property for sg2042-pcie driver (Han Gao)
Synopsys DesignWare PCIe controller driver:
- Apply ECRC TLP Digest workaround for all DesignWare cores prior to
5.10a, not just 4.90a and 5.00a (Manikanta Maddireddy)
- Use common struct dw_pcie 'mode' rather than duplicating it in
artpec6, dra7xx, dwc-pcie, and keembay driver structs (Hans Zhang)
- Use DEFINE_SHOW_ATTRIBUTE for ltssm_status debugfs to reduce
boilerplate and fix a seq_file memory leak by including a
.release() callback (Hans Zhang)
- Fix a signedness bug in fault injection test code (Dan Carpenter)
- Avoid NULL pointer dereference when tearing down debugfs for
controller that lacks RAS DES capability (Shuvam Pandey)
MicroSemi Switchtec management driver:
- Add Gen6 Device IDs (Ben Reed)
Miscellaneous:
- Remove unused gpio.h include from amd-mdb, designware-plat, fu740,
visconti drivers (Andy Shevchenko)
- Fix typos in documentation (josh ziegler)
- Use FIELD_MODIFY() instead of open-coding it (Hans Zhang)"
* tag 'pci-v7.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (168 commits)
PCI/sysfs: Use kstrtobool() to parse the ROM attribute input
PCI/sysfs: Limit BAR resize attribute scope to platforms with PCI mmap
PCI/sysfs: Remove pci_create_legacy_files() and pci_sysfs_init()
PCI/sysfs: Convert legacy I/O and memory attributes to static definitions
PCI/sysfs: Add __weak pci_legacy_has_sparse() helper
alpha/PCI: Compute legacy size in pci_mmap_legacy_page_range()
PCI: Add macros for legacy I/O and memory address space sizes
PCI/sysfs: Remove pci_{create,remove}_sysfs_dev_files()
alpha/PCI: Convert resource files to static attributes
alpha/PCI: Add static PCI resource attribute macros
alpha/PCI: Remove WARN from __pci_mmap_fits() and __legacy_mmap_fits()
alpha/PCI: Fix __pci_mmap_fits() overflow for zero-length BARs
alpha/PCI: Use PCI resource accessor macros
alpha/PCI: Use BAR index in sysfs attr->private instead of resource pointer
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
PCI/sysfs: Limit pci_sysfs_init() late_initcall compile scope
PCI/sysfs: Add stubs for pci_{create,remove}_sysfs_dev_files()
PCI/sysfs: Warn about BAR resize failure in __resource_resize_store()
PCI/sysfs: Convert PCI resource files to static attributes
PCI/proc: Fix race between pci_proc_init() and pci_bus_add_device()
...
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| book3s | ||
| nohash | ||
| vdso | ||
| 8xx_immap.h | ||
| accounting.h | ||
| archrandom.h | ||
| asm-compat.h | ||
| asm-const.h | ||
| asm-offsets.h | ||
| asm-prototypes.h | ||
| asm.h | ||
| async_tx.h | ||
| atomic.h | ||
| backlight.h | ||
| barrier.h | ||
| bitops.h | ||
| bootx.h | ||
| bpf_perf_event.h | ||
| btext.h | ||
| bug.h | ||
| cache.h | ||
| cacheflush.h | ||
| cell-pmu.h | ||
| cell-regs.h | ||
| checksum.h | ||
| clocksource.h | ||
| cmpxchg.h | ||
| code-patching-asm.h | ||
| compat.h | ||
| context_tracking.h | ||
| copro.h | ||
| cpm.h | ||
| cpm1.h | ||
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| cpu_has_feature.h | ||
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| cpufeature.h | ||
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| cputable.h | ||
| cputhreads.h | ||
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| crash_reserve.h | ||
| crashdump-ppc64.h | ||
| current.h | ||
| dbdma.h | ||
| dbell.h | ||
| dcr-native.h | ||
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| debug.h | ||
| delay.h | ||
| device.h | ||
| disassemble.h | ||
| dma-direct.h | ||
| dma.h | ||
| drmem.h | ||
| dt_cpu_ftrs.h | ||
| dtl.h | ||
| edac.h | ||
| eeh_event.h | ||
| eeh.h | ||
| ehv_pic.h | ||
| elf.h | ||
| elfnote.h | ||
| emergency-restart.h | ||
| emulated_ops.h | ||
| entry-common.h | ||
| epapr_hcalls.h | ||
| exception-64e.h | ||
| exception-64s.h | ||
| exec.h | ||
| extable.h | ||
| fadump-internal.h | ||
| fadump.h | ||
| feature-fixups.h | ||
| firmware.h | ||
| fixmap.h | ||
| floppy.h | ||
| fprobe.h | ||
| fpu.h | ||
| fsl_gtm.h | ||
| fsl_hcalls.h | ||
| fsl_lbc.h | ||
| fsl_pamu_stash.h | ||
| fsl_pm.h | ||
| ftrace.h | ||
| futex.h | ||
| grackle.h | ||
| guest-state-buffer.h | ||
| hardirq.h | ||
| head-64.h | ||
| heathrow.h | ||
| highmem.h | ||
| hmi.h | ||
| hugetlb.h | ||
| hvcall.h | ||
| hvconsole.h | ||
| hvcserver.h | ||
| hvsi.h | ||
| hw_breakpoint.h | ||
| hw_irq.h | ||
| hydra.h | ||
| i8259.h | ||
| ibmebus.h | ||
| icswx.h | ||
| idle.h | ||
| imc-pmu.h | ||
| immap_cpm2.h | ||
| inst.h | ||
| interrupt.h | ||
| io_event_irq.h | ||
| io-defs.h | ||
| io.h | ||
| iommu.h | ||
| ipic.h | ||
| irq_work.h | ||
| irq.h | ||
| irqflags.h | ||
| isa-bridge.h | ||
| jump_label.h | ||
| kasan.h | ||
| Kbuild | ||
| kdebug.h | ||
| kdump.h | ||
| kexec_ranges.h | ||
| kexec.h | ||
| keylargo.h | ||
| kfence.h | ||
| kgdb.h | ||
| kprobes.h | ||
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| kvm_asm.h | ||
| kvm_book3s_32.h | ||
| kvm_book3s_64.h | ||
| kvm_book3s_asm.h | ||
| kvm_book3s_uvmem.h | ||
| kvm_book3s.h | ||
| kvm_booke_hv_asm.h | ||
| kvm_booke.h | ||
| kvm_fpu.h | ||
| kvm_guest.h | ||
| kvm_host.h | ||
| kvm_para.h | ||
| kvm_ppc.h | ||
| kvm_types.h | ||
| libata-portmap.h | ||
| linkage.h | ||
| livepatch.h | ||
| local.h | ||
| lppaca.h | ||
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| machdep.h | ||
| macio.h | ||
| mc146818rtc.h | ||
| mce.h | ||
| mediabay.h | ||
| mem_encrypt.h | ||
| membarrier.h | ||
| mman.h | ||
| mmiowb.h | ||
| mmu_context.h | ||
| mmu.h | ||
| mmzone.h | ||
| module.h | ||
| module.lds.h | ||
| mpc5xxx.h | ||
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| mpc52xx_psc.h | ||
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| mpc85xx.h | ||
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| mpic_msgr.h | ||
| mpic_timer.h | ||
| mpic.h | ||
| msi_bitmap.h | ||
| nmi.h | ||
| nvram.h | ||
| ohare.h | ||
| opal-api.h | ||
| opal.h | ||
| paca.h | ||
| page_32.h | ||
| page_64.h | ||
| page.h | ||
| papr-sysparm.h | ||
| paravirt.h | ||
| parport.h | ||
| pasemi_dma.h | ||
| pci-bridge.h | ||
| pci.h | ||
| percpu.h | ||
| perf_event_fsl_emb.h | ||
| perf_event_server.h | ||
| perf_event.h | ||
| pgalloc.h | ||
| pgtable-be-types.h | ||
| pgtable-masks.h | ||
| pgtable-types.h | ||
| pgtable.h | ||
| pkeys.h | ||
| plpar_wrappers.h | ||
| plpks.h | ||
| pmac_feature.h | ||
| pmac_low_i2c.h | ||
| pmac_pfunc.h | ||
| pmc.h | ||
| pnv-ocxl.h | ||
| pnv-pci.h | ||
| powernv.h | ||
| ppc_asm.h | ||
| ppc-opcode.h | ||
| ppc-pci.h | ||
| ppc4xx.h | ||
| preempt.h | ||
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| processor.h | ||
| prom.h | ||
| ps3.h | ||
| ps3av.h | ||
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| qspinlock_types.h | ||
| qspinlock.h | ||
| reg_8xx.h | ||
| reg_booke.h | ||
| reg_fsl_emb.h | ||
| reg.h | ||
| rheap.h | ||
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| rtas-types.h | ||
| rtas-work-area.h | ||
| rtas.h | ||
| runlatch.h | ||
| seccomp.h | ||
| sections.h | ||
| secure_boot.h | ||
| security_features.h | ||
| secvar.h | ||
| serial.h | ||
| set_memory.h | ||
| setjmp.h | ||
| setup.h | ||
| sfp-machine.h | ||
| shmparam.h | ||
| signal.h | ||
| simple_spinlock_types.h | ||
| simple_spinlock.h | ||
| smp.h | ||
| smu.h | ||
| sparsemem.h | ||
| spinlock_types.h | ||
| spinlock.h | ||
| spu_csa.h | ||
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| spu_priv1.h | ||
| spu.h | ||
| sstep.h | ||
| stackprotector.h | ||
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| static_call.h | ||
| string.h | ||
| svm.h | ||
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| synch.h | ||
| syscall_wrapper.h | ||
| syscall.h | ||
| syscalls_32.h | ||
| syscalls.h | ||
| systemcfg.h | ||
| task_size_32.h | ||
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| tce.h | ||
| text-patching.h | ||
| thread_info.h | ||
| time.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| tm.h | ||
| topology.h | ||
| trace_clock.h | ||
| trace.h | ||
| tsi108_irq.h | ||
| tsi108_pci.h | ||
| tsi108.h | ||
| types.h | ||
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| udbg.h | ||
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| ultravisor-api.h | ||
| ultravisor.h | ||
| uninorth.h | ||
| unistd.h | ||
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| uprobes.h | ||
| user.h | ||
| vas.h | ||
| vdso_datapage.h | ||
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| vermagic.h | ||
| vga.h | ||
| video.h | ||
| vio.h | ||
| vmalloc.h | ||
| vphn.h | ||
| word-at-a-time.h | ||
| xics.h | ||
| xive-regs.h | ||
| xive.h | ||
| xmon.h | ||