linux/arch/alpha/kernel
Linus Torvalds 570f7e331f pci-v7.3-changes
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Merge tag 'pci-v7.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI updates from Bjorn Helgaas:
 "Resource management:

   - Add hotplug reservation only once (not at each level of the
     hierarchy) so bridge windows don't grow more than necessary (Ilpo
     Järvinen)

  Driver binding:

   - Rework device matching so device ID lifetime only needs to cover
     the probe path since dynamic IDs can be removed at any time (Gary
     Guo)

  Error handling:

   - Update mappings of AER errors to agent & layer and log them for
     each individual error when multiple errors detected (Lukas Wunner)

   - Log Error Source only once, not twice in separate messages (Lukas
     Wunner)

   - Emit TLP Log only for unmasked errors (Lukas Wunner)

   - Support Advisory Non-Fatal Errors (Lukas Wunner)

   - Allow DPC on all Downstream Ports, not just Root Ports, when OS
     controls AER (Darshit Shah)

  ASPM:

   - Program the same ASPM Control values for every function of
     multi-function devices, as recommended by the PCIe spec (Krishna
     Chaitanya Chundru)

   - Avoid L0s for Realtek RTS525A, where it causes an AER interrupt
     storm (Max Lee)

   - Avoid ASPM L0s, L1, and L1 PM Substates based on 'aspm-no-l0s',
     'aspm-no-l1' [1], and 'aspm-no-l1ss' DT properties (Krishna
     Chaitanya Chundru)

  Power management:

   - Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
     (we avoid D3 for these ports on x86 because some old platforms
     didn't validate it) (Manivannan Sadhasivam)

   - Allow portdrv to claim Ports even if they don't support services
     (AER, PME, DPC, hotplug, etc) so it can do power management (Brian
     Norris)

  Power control:

   - Add support for PCIe WAKE# interrupt when described via DT (Krishna
     Chaitanya Chundru)

   - For the TC9563 PCIe switch:

       - Take a reference on the I2C adapter to avoid uninterruptible
         hang when unloading an I2C module while in-use (Johan Hovold)

       - Update DT binding and driver to restrict Tx Amplitude, DFE and
         N_FTS to USP, DSP1 and DSP2 (Manivannan Sadhasivam)

       - Power off only external-facing ports (DSP1, DSP2), leaving USP
         and DSP3 (aka VDSP) powered up (Manivannan Sadhasivam)

       - Move integrated MAC Endpoint out of the list of internal ports
         and configure it separately (Manivannan Sadhasivam)

  Virtualization:

   - Add ACS quirk for Pericom PI7C9X2G608 switches (Tim Harvey)

   - Fix a long-standing bug in the Intel PCH Root Port MPC ACS quirk
     that didn't update the intended INTEL_MPC_REG_IRBNCE bit because it
     used a 16-bit config write when a 32-bit write was intended
     (Mohamad Raizudeen)

  Procfs:

   - Avoid spurious runtime PM wakeup on config space accesses that are
     outside config space and fail before reaching PCI (Krzysztof
     Wilczyński)

   - Warn on user-space writes to kernel-exclusive config space regions,
     as we already do for sysfs (Krzysztof Wilczyński)

   - Check credentials of opener, not reader, for config space reads, as
     we already do for sysfs (Krzysztof Wilczyński)

  Sysfs:

   - In pci_write_legacy_io(), avoid out-of-bounds reads from the user
     buffer and fix incorrect ioport write data (1-byte writes on
     little-endian powerpc, 2- and 4-byte writes on big-endian powerpc)
     (Krzysztof Wilczyński)

   - In pci_read_legacy_io(), fix incorrect ioport read data for 2- and
     4-byte reads on big-endian powerpc (Krzysztof Wilczyński)

   - Fix I/O port accessor argument order in Alpha pci_legacy_write()
     (Krzysztof Wilczyński)

   - Avoid spurious runtime PM wakeup on config space accesses that are
     outside config space and fail before reaching PCI (Krzysztof
     Wilczyński)

   - Return -EINVAL, not -ENODEV, for mmap of I/O BAR that fails because
     the arch doesn't support it, as we do for procfs (Krzysztof
     Wilczyński)

   - Check for LOCKDOWN_PCI_ACCESS for legacy_io and legacy_mem, as we
     do for other config space accessors (Krzysztof Wilczyński)

  Peer-to-peer DMA:

   - Add Nvidia Vera Rubin to list of platforms that support P2PDMA
     (Leon Romanovsky)

  Endpoint framework:

   - Check doorbell SUCCESS bit in pci_endpoint_test to avoid treating
     some failures as successes (Niklas Cassel)

   - Fail doorbell test when the trigger IRQ is missed (Niklas Cassel)

  New native PCIe controller drivers:

   - Add DT binding and driver for NVIDIA Tegra264 (Thierry Reding)

  Native PCIe controllers:

   - Use common wait time definitions for PCIe link monitoring instead
     of defining driver-private duplicates (Thierry Reding)

  Generic host bridge driver:

   - Fix NULL pointer dereference that caused enumeration failures on
     32-bit CAM systems (Steffen Persvold)

  Amlogic Meson PCIe controller driver:

   - Correct the PERST# GPIO state so it remains asserted until power
     and REFCLK become stable to fix enumeration failure (Ronald
     Claveau)

  ASPEED PCIe controller driver:

   - Switch to irq_domain_create_linear() so we can obsolete
     irq_domain_add_linear() (Jiri Slaby)

  Cadence PCIe controller driver:

   - Add MODULE_DEVICE_TABLE to generate module aliases for OF-based
     module autoloading (Pengpeng Hou)

   - Add debugfs 'ltssm_status' file for LGA- and HPA-based Cadence
     controllers (Hans Zhang)

   - Support up to x4 (not x2) lanes for J200 (Takuma Fujiwara)

   - Fix host/endpoint dependencies for cadence-plat driver to fix link
     error when cadence-plat is built-in but the host or endpoint driver
     is modular (Aksh Garg)

  Freescale i.MX6 PCIe controller driver:

   - Add imx6 intr/aer/pme interrupt lines for i.MX95 (Richard Zhu)

   - Remove PERST# checking from pci_host_common_parse_port() so callers
     can decide whether to fall back to legacy DT binding with PERST# in
     the host bridge (Sherry Sun)

   - Fix build issues when PCI_PWRCTRL_GENERIC or PCI_HOST_COMMON is a
     module (Arnd Bergmann)

   - Create pwrctrl devices only once by doing it from imx_pcie_probe()
     instead of imx_pcie_host_init(), which is used during both probe
     and resume (Sherry Sun)

   - Use 'dw_pcie_rp->skip_pwrctrl_off' to avoid powering off devices
     during suspend to preserve wakeup capability (Sherry Sun)

   - Add runtime PM support for i.MX95 to allow dynamic power management
     when the link is idle (Richard Zhu)

  Intel VMD host bridge driver:

   - Support device ID 0x28C1 and assume that BIOS has already
     enumerated the hierarchy below VMD and stored bus range info for OS
     to use (Nirmal Patel)

   - Add support for VMCONFIG BUS_RESTRICT_CFG=3, which makes it
     possible to enumerate downstream devices on Intel Arrow Lake-HX
     systems and probably others (Ali Alaei)

   - Pay attention to _OSC negotiation for VMD hierarchy only when
     running on bare metal, not when running in a VM (Nirmal Patel)

   - Add Nova Lake (NVL) and Dunlow (DNL) Device IDs (Szymon Durawa)

  MediaTek PCIe controller driver:

   - Add support for PCIe controller in EcoNet EN7528 and EN751221 SoCs
     (Caleb James DeLisle)

  MediaTek PCIe Gen3 controller driver:

   - Add mediatek-gen3 'memory-region' for restricted DMA buffer
     (Chen-Yu Tsai)

  NVIDIA Tegra264 PCIe controller driver:

   - Distinguish Tegra264 C0 PCIe controller for internal GPU from C1-C5
     controllers so the unit address matches the first 'reg' entry
     (Thierry Reding)

   - Add Tegra264 Root Port stanzas to prepare for generic WAKE#
     handling (Thierry Reding)

  Qualcomm PCIe controller driver:

   - Add IPQ9650 compatible with global interrupt (Kathiravan
     Thirumoorthy)

   - Add IPQ5210 compatible with IPQ9574 fallback (Varadarajan
     Narayanan)

   - Add DT binding and driver support for Hawi SoC (Matthew Leung)

   - Skip PERST# GPIOs provided by downstream PCIe devices, which should
     be handled by drivers of those devices (Manivannan Sadhasivam)

   - Stop advertising Attention Button Present (no Qcom SoCs support
     Attention Buttons) so pciehp can use Presence Detect Changed events
     (Qiang Yu)

  Renesas R-Car PCIe controller driver:

   - Add rcar-gen4-pci-host optional 'msi-parent' for GIT ITS (Marek
     Vasut)

   - When MSI is enabled but iMSI-RX is not used, configure AXIINTC to
     allow GIT ITS to handle MSI (Marek Vasut)

   - Refactor GIC600 implementation to make it easier to add platforms
     that only support 32-bit addressing (Marek Vasut)

   - Add Renesas R-Car Gen4 S4/V4H/V4M to the list of GIC600
     integrations that only support 32-bit addressing (Marek Vasut)

  Renesas RZ/G3S PCIe controller driver:

   - Add DT binding and driver support for RZ/V2H(P) SoC, which contains
     two PCIe controllers, configured either as a single x4 link or two
     independent x2 link controllers (Lad Prabhakar)

  SpacemiT K1 PCIe controller driver:

   - Add missing MODULE_DEVICE_TABLE() to generate module alias info for
     OF-based module autoloading (Pengpeng Hou)

  StarFive PCIe controller driver:

   - Fix resource leaks on error paths in host_init() (Ali Tariq)

   - Fix runtime PM handling and teardown ordering to avoid register
     access while power or clocks are disabled (Ali Tariq)

   - Check for runtime PM resume failure to avoid register access while
     power or clocks are disabled (Ali Tariq)

  Synopsys DesignWare PCIe controller driver:

   - Add LECARC PMU IDs to the DWC RAS/DES VSEC list so it can take
     advantage of the existing debugfs support for silicon debug, error
     injection, and event counters (Brett Zhou)

   - Factor pcie_valid_speed() and pci_bus_speed2lnkctl2() out of bwctrl
     so they can be shared by the DWC core (Hans Zhang)

   - Flush MSI writes from endpoint before unmapping the iATU, as we
     already do for MSI-X writes (Niklas Cassel)

   - Unmap MSI iATU window before mapping MSI-X window, to avoid a
     subsequent MSI write using a disabled aperture and losing the
     interrupt (Niklas Cassel)

   - Change endpoint .pre_init() and .init() callbacks to return errors
     and handle them (Marek Vasut)

  UltraRISC PCIe controller driver:

   - Add 'core', 'dbi', and 'aux' clocks to DT binding and manage them
     in the driver (Jia Wang)

   - Use module_platform_driver() since this may be built as a module,
     though not removable because IRQs can't be safely disposed (Jia
     Wang)

  MicroSemi Switchtec management driver:

   - Add Microchip PCI1008 device ID and include it in NTB DMA alias
     quirk (Logan Gunthorpe)

  Miscellaneous:

   - Document how to write PCI Host Controller drivers (Manivannan
     Sadhasivam)

   - Fix typos in documentation (D'Orus Tsitera)

   - Use %pe format specifier to print error pointers so we get symbolic
     errname when available (Krzysztof Wilczyński)"

* tag 'pci-v7.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (124 commits)
  PCI: vmd: Add Nova Lake (NVL) and Dunlow (DNL) Device IDs
  PCI: tegra264: Add Tegra264 support
  dt-bindings: PCI: tegra264: Switch to PCIe Root Port bindings
  dt-bindings: PCI: tegra264: Strictly distinguish C0 from C1-C5
  PCI/AER: Support Advisory Non-Fatal Errors
  PCI: Fix 32-bit config write in Intel PCH Root Port MPC ACS quirk
  PCI: dwc: Handle return value from endpoint .pre_init callback
  PCI: dwc: Handle return value from endpoint .init callback
  PCI: dwc: Add PCI ID for LECARC PCIe PMU
  PCI/ASPM: Mask ASPM states based on Devicetree properties
  PCI/ASPM: Disable/restore ASPM on every function for multi-function devices
  Documentation: PCI: Document how to write PCI Host Controller drivers
  PCI/ASPM: Use pcie_capability_clear_and_set_word() for ASPM disable/restore
  PCI: Add support for PCIe WAKE# interrupt
  PCI: Allow D3 for native hotplug-capable Root Ports on non-x86 platforms
  dt-bindings: PCI: Correct white-space style
  PCI/ASPM: Avoid L0s for Realtek RTS525A
  PCI: ultrarisc: Use module_platform_driver()
  PCI: ultrarisc: Get and enable DP1000 PCIe controller clocks
  dt-bindings: PCI: ultrarisc: Add required DP1000 PCIe clocks
  ...
2026-08-23 12:44:10 -07:00
..
syscalls arch: hookup fchroot() system call 2026-07-27 17:18:00 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c alpha: enable regset-based ptrace and core dumps 2026-07-19 13:15:40 +02:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
bugs.c alpha: missing includes 2024-05-03 22:09:30 +02:00
console.c alpha: missing includes 2024-05-03 22:09:30 +02:00
core_cia.c mm/memblock: add memblock_alloc_or_panic interface 2025-01-25 20:22:38 -08:00
core_irongate.c alpha: missing includes 2024-05-03 22:09:30 +02:00
core_marvel.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
core_mcpcia.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_polaris.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
core_t2.c alpha: jensen, t2 - make __EXTERN_INLINE same as for the rest 2024-05-03 22:09:37 +02:00
core_titan.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
core_tsunami.c memblock: stop using implicit alignment to SMP_CACHE_BYTES 2018-10-31 08:54:16 -07:00
core_wildfire.c alpha: don't make functions public without a reason 2024-05-03 22:09:21 +02:00
entry.S alpha: enable lockdep hardirq state tracking 2026-07-19 13:16:26 +02:00
err_common.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_ev6.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_ev7.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_impl.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_marvel.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
err_titan.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
es1888.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
gct.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
head.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io.c console: mdacon: remove this obsolete driver 2026-05-20 20:23:32 +02:00
irq_alpha.c alpha: annotate hardirqs-off on IPL 7 interrupt entry 2026-08-11 23:23:48 +02:00
irq_i8259.c alpha: use raw spinlocks for low-level platform locks 2026-07-19 13:16:15 +02:00
irq_impl.h alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_pyxis.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
irq_srm.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
irq.c genirq/proc: Increase default interrupt number precision to four 2026-05-26 16:21:14 +02:00
machvec_impl.h alpha: drop pre-EV56 support 2024-05-06 12:05:00 +02:00
Makefile alpha: add ARCH_STACKWALK-based stacktrace support 2026-07-19 13:15:54 +02:00
module.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
osf_sys.c alpha: switch osf_mount() to strndup_user() 2026-01-16 12:52:04 -05:00
pc873xx.c alpha: eliminate old-style function definitions 2021-05-06 19:24:11 -07:00
pc873xx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci_impl.h alpha: remove LCA and APECS based machines 2024-05-03 22:09:59 +02:00
pci_iommu.c alpha: Convert mapping routine to rely on physical address 2025-10-29 10:27:30 +01:00
pci-sysfs.c alpha/PCI: Make the suffix the first __pci_dev_resource_attr() parameter 2026-08-04 17:09:21 -05:00
pci.c resource: Pass full extent of empty space to resource_alignf callback 2026-03-27 10:18:39 -05:00
perf_event.c alpha/perf: Remove driver-specific throttle support 2025-05-21 13:57:45 +02:00
process.c arch: copy_thread: pass clone_flags as u64 2025-09-01 15:31:34 +02:00
proto.h alpha: enable lockdep hardirq state tracking 2026-07-19 13:16:26 +02:00
ptrace.c alpha updates for v7.3 2026-08-18 19:33:32 -07:00
rtc.c alpha: run the remote RTC access in a worker, not an IPI callback 2026-08-11 23:23:47 +02:00
setup.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
signal.c alpha: enable lockdep hardirq state tracking 2026-07-19 13:16:26 +02:00
smc37c93x.c alpha: missing includes 2024-05-03 22:09:30 +02:00
smc37c669.c alpha: missing includes 2024-05-03 22:09:30 +02:00
smp.c alpha: missing includes 2024-05-03 22:09:30 +02:00
srm_env.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
srmcons.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
stacktrace.c alpha: add ARCH_STACKWALK-based stacktrace support 2026-07-19 13:15:54 +02:00
sys_alcor.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_cabriolet.c alpha: cabriolet: remove EV5 CPU support 2024-05-03 22:10:03 +02:00
sys_dp264.c alpha: use raw spinlocks for low-level platform locks 2026-07-19 13:16:15 +02:00
sys_eiger.c alpha: remove unneeded semicolon in sys_eiger.c 2020-06-12 17:43:17 -07:00
sys_marvel.c alpha: marvel: Fix lock ordering in init_io7_irqs() 2026-07-06 22:59:19 +02:00
sys_miata.c alpha: Streamline convoluted PCI error handling 2023-10-10 16:26:56 -05:00
sys_mikasa.c alpha: remove LCA and APECS based machines 2024-05-03 22:09:59 +02:00
sys_nautilus.c alpha: missing includes 2024-05-03 22:09:30 +02:00
sys_noritake.c alpha: remove LCA and APECS based machines 2024-05-03 22:09:59 +02:00
sys_rawhide.c alpha: use raw spinlocks for low-level platform locks 2026-07-19 13:16:15 +02:00
sys_ruffian.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_rx164.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_sable.c alpha: sable: remove early machine support 2024-05-03 22:09:55 +02:00
sys_sx164.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_takara.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_titan.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
sys_wildfire.c alpha: remove DISCONTIGMEM and NUMA 2021-06-29 10:53:55 -07:00
systbls.S alpha: syscalls: switch to generic syscalltbl.sh 2021-04-25 05:25:22 +09:00
termios.c termios: start unifying non-UAPI parts of asm/termios.h 2022-09-09 10:44:34 +02:00
time.c alpha: Replace setup_irq() by request_irq() 2020-03-29 21:03:41 +02:00
traps.c alpha: read $gp and $sp explicitly for clang 2026-08-16 16:00:00 +02:00
vmlinux.lds.S alpha: add ARCH_STACKWALK-based stacktrace support 2026-07-19 13:15:54 +02:00