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linux/drivers/pci
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Jonathan Currier a78bbde0f1 PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads 
[ Upstream commit cf761e3dac ]

Commit 7d5ec3d361 ("PCI/MSI: Mask all unused MSI-X entries") introduced a
readl() from ENTRY_VECTOR_CTRL before the writel() to ENTRY_DATA.

This is correct, however some hardware, like the Sun Neptune chips, the NIU
module, will cause an error and/or fatal trap if any MSIX table entry is
read before the corresponding ENTRY_DATA field is written to.

Add an optional early writel() in msix_prepare_msi_desc().

Fixes: 7d5ec3d361 ("PCI/MSI: Mask all unused MSI-X entries")
Signed-off-by: Jonathan Currier <dullfire@yahoo.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20241117234843.19236-2-dullfire@yahoo.com
[ Applied workaround to msix_setup_msi_descs() instead of msix_prepare_msi_desc() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-09-09 18:54:18 +02:00
..
controller PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining 2025-08-28 16:26:15 +02:00
endpoint PCI: endpoint: Fix configfs group removal on driver teardown 2025-08-28 16:26:07 +02:00
hotplug PCI: pnv_php: Fix surprise plug detection and recovery 2025-08-15 12:05:08 +02:00
msi PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads 2025-09-09 18:54:18 +02:00
pcie PCI/DPC: Initialize aer_err_info before using it 2025-06-27 11:07:16 +01:00
switch PCI: switchtec: Add Microchip PCI100X device IDs 2025-02-21 13:49:59 +01:00
access.c PCI: Add locking to RMW PCI Express Capability Register accessors 2023-09-13 09:42:46 +02:00
ats.c PCI: Allow PASID on fake PCIe devices without TLP prefixes 2021-08-26 14:21:42 -05:00
bus.c PCI/ASPM: Fix deadlock when enabling ASPM 2024-04-27 17:07:18 +02:00
doe.c PCI/DOE: Fix destroy_work_on_stack() race 2023-09-13 09:42:45 +02:00
ecam.c PCI: Dynamically map ECAM regions 2021-06-16 17:20:40 -05:00
host-bridge.c PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus 2021-09-02 17:59:58 +02:00
iov.c PCI/IOV: Enlarge virtfn sysfs name buffer 2023-03-10 09:33:31 +01:00
irq.c PCI: Check for alloc failure in pci_request_irq() 2022-12-31 13:32:33 +01:00
Kconfig x86/kaslr: Reduce KASLR entropy on most x86 systems 2025-06-04 14:40:12 +02:00
Makefile PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
mmap.c PCI: Remove pci_mmap_page_range() wrapper 2022-07-29 12:08:44 -05:00
of.c IOMMU Updates for Linux v5.19 2022-05-31 09:56:54 -07:00
p2pdma.c PCI/P2PDMA: Use for_each_pci_dev() helper 2022-09-19 13:44:38 -05:00
pci-acpi.c PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports 2025-08-28 16:26:10 +02:00
pci-bridge-emul.c PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value 2022-08-25 12:07:56 +02:00
pci-bridge-emul.h PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value 2022-08-25 12:07:56 +02:00
pci-driver.c PCI/PM: Mark devices disconnected if upstream PCIe link is down on resume 2024-10-17 15:21:28 +02:00
pci-label.c PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions 2021-06-03 22:14:47 -05:00
pci-mid.c PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM 2021-09-27 17:13:21 +02:00
pci-pf-stub.c PCI/IOV: Simplify pci-pf-stub with module_pci_driver() 2020-09-17 12:40:20 -05:00
pci-stub.c PCI: pci_stub: Set driver_managed_dma 2022-04-28 15:32:20 +02:00
pci-sysfs.c PCI: Add 'reset_subordinate' to reset hierarchy below bridge 2024-12-14 19:54:48 +01:00
pci.c PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports 2025-08-28 16:26:10 +02:00
pci.h PCI: Add 'reset_subordinate' to reset hierarchy below bridge 2024-12-14 19:54:48 +01:00
probe.c PCI/ACPI: Fix runtime PM ref imbalance on Hot-Plug Capable ports 2025-08-28 16:26:10 +02:00
proc.c PCI: Remove pci_mmap_page_range() wrapper 2022-07-29 12:08:44 -05:00
quirks.c PCI: Add ACS quirk for Loongson PCIe 2025-06-27 11:07:31 +01:00
remove.c PCI: Fix use-after-free in pci_bus_release_domain_nr() 2025-05-02 07:47:10 +02:00
rom.c PCI: Prefer 'unsigned int' over bare 'unsigned' 2021-10-27 13:41:22 -05:00
search.c PCI: Remove WARN_ON(in_interrupt()) 2021-02-10 16:46:29 -06:00
setup-bus.c PCI: Fix old_size lower bound in calculate_iosize() too 2025-06-04 14:40:13 +02:00
setup-irq.c PCI: Tidy comments 2021-09-28 13:43:17 -05:00
setup-res.c PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge 2022-09-21 17:52:47 -05:00
slot.c PCI: Fix use-after-free of slot->bus on hot remove 2024-12-14 19:53:59 +01:00
syscall.c PCI: Return int from pciconfig_read() syscall 2021-08-03 16:55:48 -05:00
vc.c PCI: Fix kerneldoc warnings 2020-08-05 18:23:14 -05:00
vgaarb.c PCI/VGA: Replace full MIT license text with SPDX identifier 2022-03-09 18:31:34 -06:00
vpd.c PCI/VPD: Use pci_read_vpd_any() in pci_vpd_size() 2021-10-25 19:12:23 -05:00
xen-pcifront.c xen/pcifront: move xenstore config scanning into sub-function 2022-10-07 07:36:44 +02:00