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Date: Mon, 10 Oct 2022 15:47:46 -0500
From: Bjorn Helgaas <helgaas@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Rob Herring <robh@...nel.org>
Subject: [GIT PULL] PCI changes for v6.1
The following changes since commit 568035b01cfb107af8d2e4bd2fb9aea22cf5b868:
Linux 6.0-rc1 (2022-08-14 15:50:18 -0700)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v6.1-changes
for you to fetch changes up to 0e00a3aeae255416577fc69b9b49be4778c05464:
Merge branch 'for-linus' into next (2022-10-06 16:06:56 -0500)
----------------------------------------------------------------
Resource management:
- Distribute spare resources to unconfigured hotplug bridges at boot-time
(not just when hot-adding such a bridge), which makes hot-adding
devices to docks work better.
- Revert to a BAR assignment inherited from firmware only when the
address is actually reachable via any upstream bridges, which
fixes some cases where firmware doesn't configure all devices.
- Add a sysfs interface to resize BARs so this can be done before
assigning devices to a VM through VFIO.
Power management:
- Disable Precision Time Management for all devices on suspend to enable
lower-power PM state. We previously did this just for Root Ports,
which isn't enough because downstream devices can still generate PTM
messages, which cause errors if it's disabled in the Root Port.
- Save and restore the ASPM L1 PM Substates configuration for suspend/
resume. Previously this configuration was lost, so L1.x states likely
stopped working after resume.
- Check whether the L1 PM Substates Capability exists. If it didn't
exist, we previously read junk and tried to configure L1 Substates
based on that.
- Fix the LTR_L1.2_THRESHOLD computation, which previously set a
threshold for entering L1.2 that was too low in some cases.
- Reduce the delay after transitions to or from D3cold by using
usleep_range() rather than msleep(), which often slept for ~19ms
instead of the 10ms normally required. The spec says 10ms is enough,
but it's possible we could trip over devices that need a little more.
Error handling:
- Work around a BIOS bug that caused Intel Root Ports to advertise a Root
Port Programmed I/O (RP PIO) log size of zero, which caused annoying
warnings and prevented the kernel from dumping log registers for
DPC errors.
Qualcomm PCIe controller driver:
- Add support for SC8280XP and SA8540P host controllers and SM8450
endpoint controller.
- Disable Master AXI clock on endpoint controllers to save power when
link is idle or in L1.x.
- Expose link state transition counts via debugfs to help debug issues
with low-power states.
- Add auto-loading module support.
Synopsys DesignWare PCIe controller driver:
- Remove a dependency on ZONE_DMA32 by allocating the MSI target page
differently. There's more work to do related to eDMA controllers, so
it's not completely settled.
----------------------------------------------------------------
Alex Williamson (1):
PCI: Expose PCIe Resizable BAR support via sysfs
Andy Shevchenko (1):
PCI: dwc: Replace of_gpio_named_count() by gpiod_count()
Bjorn Helgaas (29):
PCI/PTM: Cache PTM Capability offset
PCI/PTM: Add pci_upstream_ptm() helper
PCI/PTM: Separate configuration and enable
PCI/PTM: Add pci_suspend_ptm() and pci_resume_ptm()
PCI/PTM: Move pci_ptm_info() body into its only caller
PCI/PTM: Preserve RsvdP bits in PTM Control register
PCI/PTM: Reorder functions in logical order
PCI/PTM: Consolidate PTM interface declarations
PCI/PM: Always disable PTM for all devices during suspend
PCI/ASPM: Factor out L1 PM Substates configuration
PCI/ASPM: Ignore L1 PM Substates if device lacks capability
PCI/ASPM: Correct LTR_L1.2_THRESHOLD computation
Merge branch 'pci/aspm'
Merge branch 'pci/dpc'
Merge branch 'pci/msi'
Merge branch 'pci/pm'
Merge branch 'pci/rebar'
Merge branch 'pci/resource'
Merge branch 'remotes/lorenzo/pci/aardvark'
Merge branch 'remotes/lorenzo/pci/apple'
Merge branch 'remotes/lorenzo/pci/bridge-emul'
Merge branch 'remotes/lorenzo/pci/dt'
Merge branch 'remotes/lorenzo/pci/dwc'
Merge branch 'remotes/lorenzo/pci/mediatek'
Merge branch 'remotes/lorenzo/pci/mvebu'
Merge branch 'pci/qcom'
Merge branch 'remotes/lorenzo/pci/misc'
Merge branch 'pci/misc'
Merge branch 'for-linus' into next
Conor Dooley (3):
dt-bindings: PCI: fu740-pci: fix missing clock-names
dt-bindings: PCI: microchip,pcie-host: fix missing clocks properties
dt-bindings: PCI: microchip,pcie-host: fix missing dma-ranges
Dmitry Baryshkov (1):
PCI: qcom-ep: Add MODULE_DEVICE_TABLE
Dmitry Torokhov (1):
PCI: apple: Do not leak reset GPIO on unbind/unload/error
Felix Fietkau (1):
PCI: mediatek-gen3: Change driver name to mtk-pcie-gen3
Jianjun Wang (1):
dt-bindings: PCI: mediatek-gen3: Add support for MT8188 and MT8195
Johan Hovold (10):
dt-bindings: PCI: qcom: Enumerate platforms with single msi interrupt
dt-bindings: PCI: qcom: Add SC8280XP to binding
dt-bindings: PCI: qcom: Add SA8540P to binding
PCI: qcom: Add support for SC8280XP
PCI: qcom: Add support for SA8540P
PCI: qcom: Make all optional clocks optional
PCI: qcom: Clean up IP configurations
PCI: qcom: Sort device-id table
PCI: qcom: Drop unused post_deinit callback
PCI: qcom: Rename host-init error label
Josef Johansson (1):
PCI/MSI: Correct 'can_mask' test in msi_add_msi_desc()
Krishna chaitanya chundru (1):
dt-bindings: pci: QCOM Add missing sc7280 aggre0, aggre1 clocks
Maciej W. Rozycki (1):
PCI: Sanitise firmware BAR assignments behind a PCI-PCI bridge
Manivannan Sadhasivam (13):
MAINTAINERS: Add Manivannan Sadhasivam as PCI Endpoint reviewer
PCI: qcom-ep: Add kernel-doc for qcom_pcie_ep structure
PCI: qcom-ep: Rely on the clocks supplied by devicetree
PCI: qcom-ep: Make use of the cached dev pointer
PCI: qcom-ep: Disable IRQs during driver remove
PCI: qcom-ep: Expose link transition counts via debugfs
PCI: qcom-ep: Gate Master AXI clock to MHI bus during L1SS
PCI: qcom-ep: Disable Master AXI Clock when there is no PCIe traffic
dt-bindings: PCI: qcom-ep: Make PERST separation optional
PCI: qcom-ep: Make PERST separation optional
dt-bindings: PCI: qcom-ep: Define clocks per platform
dt-bindings: PCI: qcom-ep: Add support for SM8450 SoC
PCI: qcom-ep: Add support for SM8450 SoC
Mika Westerberg (7):
PCI: Fix used_buses calculation in pci_scan_child_bus_extend()
PCI: Pass available buses even if the bridge is already configured
PCI: Move pci_assign_unassigned_root_bus_resources()
PCI: Distribute available resources for root buses, too
PCI: Fix whitespace and indentation
PCI: Fix typo in pci_scan_child_bus_extend()
PCI/DPC: Quirk PIO log size for certain Intel Root Ports
Pali Rohár (7):
PCI: mvebu: Fix endianness when accessing PCI emul bridge members
PCI: pci-bridge-emul: Set position of PCI capabilities to real HW value
PCI: aardvark: Add support for PCI Bridge Subsystem Vendor ID on emulated bridge
PCI: Add standard PCI Config Address macros
PCI: ftpci100: Use PCI_CONF1_ADDRESS() macro
PCI: mt7621: Use PCI_CONF1_EXT_ADDRESS() macro
PCI: tegra: Use PCI_CONF1_EXT_ADDRESS() macro
Rajvi Jingar (1):
PCI/PM: Simplify pci_pm_suspend_noirq()
Richard Zhu (2):
PCI: imx6: Add i.MX8MP PCIe support
phy: freescale: imx8m-pcie: Fix the wrong order of phy_init() and phy_power_on()
Russell Currey (1):
MAINTAINERS: Add Mahesh J Salgaonkar as EEH maintainer
Sajid Dalvi (1):
PCI/PM: Reduce D3hot delay with usleep_range()
Vidya Sagar (2):
PCI/ASPM: Refactor L1 PM Substates Control Register programming
PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
Will McVicker (1):
PCI: dwc: Drop dependency on ZONE_DMA32
Yang Yingliang (2):
PCI/P2PDMA: Use for_each_pci_dev() helper
PCI: qcom-ep: Check platform_get_resource_byname() return value
Documentation/ABI/testing/sysfs-bus-pci | 33 ++
.../bindings/pci/mediatek-pcie-gen3.yaml | 13 +-
.../bindings/pci/microchip,pcie-host.yaml | 31 ++
.../devicetree/bindings/pci/qcom,pcie-ep.yaml | 86 +++--
.../devicetree/bindings/pci/qcom,pcie.yaml | 80 ++++-
.../devicetree/bindings/pci/sifive,fu740-pcie.yaml | 8 +
MAINTAINERS | 5 +-
drivers/pci/controller/dwc/pci-imx6.c | 33 +-
drivers/pci/controller/dwc/pcie-designware-host.c | 28 +-
drivers/pci/controller/dwc/pcie-designware.h | 1 -
drivers/pci/controller/dwc/pcie-kirin.c | 4 +-
drivers/pci/controller/dwc/pcie-qcom-ep.c | 164 +++++++--
drivers/pci/controller/dwc/pcie-qcom.c | 128 +++----
drivers/pci/controller/pci-aardvark.c | 4 +
drivers/pci/controller/pci-ftpci100.c | 21 +-
drivers/pci/controller/pci-mvebu.c | 13 +-
drivers/pci/controller/pci-tegra.c | 11 +-
drivers/pci/controller/pcie-apple.c | 4 +-
drivers/pci/controller/pcie-mediatek-gen3.c | 2 +-
drivers/pci/controller/pcie-mt7621.c | 17 +-
drivers/pci/msi/msi.c | 2 +-
drivers/pci/p2pdma.c | 2 +-
drivers/pci/pci-bridge-emul.c | 48 ++-
drivers/pci/pci-bridge-emul.h | 2 +
drivers/pci/pci-driver.c | 32 +-
drivers/pci/pci-sysfs.c | 108 ++++++
drivers/pci/pci.c | 49 +--
drivers/pci/pci.h | 63 +++-
drivers/pci/pcie/aspm.c | 256 +++++++++-----
drivers/pci/pcie/dpc.c | 15 +-
drivers/pci/pcie/ptm.c | 384 ++++++++++++---------
drivers/pci/probe.c | 13 +-
drivers/pci/quirks.c | 36 ++
drivers/pci/setup-bus.c | 290 ++++++++++------
drivers/pci/setup-res.c | 11 +
drivers/phy/freescale/phy-fsl-imx8m-pcie.c | 8 +-
include/linux/pci.h | 3 +
37 files changed, 1321 insertions(+), 687 deletions(-)
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