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Modify pci_epc_get_next_free_bar() and pci_epc_get_first_free_bar() to
return error values if there are no free BARs available.
Link: https://lore.kernel.org/r/20210201195809.7342-5-kishon@ti.com
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Add an API to get the next unreserved BAR starting from a given BAR number
that can be used by the endpoint function.
Link: https://lore.kernel.org/r/20210201195809.7342-4-kishon@ti.com
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
pci_epc_get_first_free_bar() uses only "reserved_bar" member in
epc_features to get the first unreserved BAR. However if the reserved BAR
is also a 64-bit BAR, then the next BAR shouldn't be returned (since 64-bit
BAR uses two BARs).
Make pci_epc_get_first_free_bar() take into account 64 bit BAR while
returning the first free unreserved BAR.
Link: https://lore.kernel.org/r/20210201195809.7342-3-kishon@ti.com
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Add support for the Microchip PolarFire PCIe controller when configured in
host (Root Complex) mode.
[bhelgaas: wrap lines to fit in 80 columns, fix trivial style issues]
Link: https://lore.kernel.org/r/20210125162934.5335-4-daire.mcnamara@microchip.com
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
[lorenzo.pieralisi@arm.com: minor comments tweak]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Many drivers can now use pci_host_common_probe() directly.
Their hardware window setup can be moved from their 'custom' probe
functions to individual driver init functions.
Link: https://lore.kernel.org/r/20210125162934.5335-2-daire.mcnamara@microchip.com
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rob Herring <robh@kernel.org>
- replace mm/frame_vector.c by get_user_pages in misc/habana and
drm/exynos drivers, then move that into media as it's sole user
- close race in generic_access_phys
- s390 pci ioctl fix of this series landed in 5.11 already
- properly revoke iomem mappings (/dev/mem, pci files)
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Merge tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm
Pull follow_pfn() updates from Daniel Vetter:
"Fixes around VM_FPNMAP and follow_pfn:
- replace mm/frame_vector.c by get_user_pages in misc/habana and
drm/exynos drivers, then move that into media as it's sole user
- close race in generic_access_phys
- s390 pci ioctl fix of this series landed in 5.11 already
- properly revoke iomem mappings (/dev/mem, pci files)"
* tag 'topic/iomem-mmap-vs-gup-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
PCI: Revoke mappings like devmem
PCI: Also set up legacy files only after sysfs init
sysfs: Support zapping of binary attr mmaps
resource: Move devmem revoke code to resource framework
/dev/mem: Only set filp->f_mapping
PCI: Obey iomem restrictions for procfs mmap
mm: Close race in generic_access_phys
media: videobuf2: Move frame_vector into media subsystem
mm/frame-vector: Use FOLL_LONGTERM
misc/habana: Use FOLL_LONGTERM for userptr
misc/habana: Stop using frame_vector helpers
drm/exynos: Use FOLL_LONGTERM for g2d cmdlists
drm/exynos: Stop using frame_vector helpers
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Merge tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull Hyper-V updates from Wei Liu:
- VMBus hardening patches from Andrea Parri and Andres Beltran.
- Patches to make Linux boot as the root partition on Microsoft
Hypervisor from Wei Liu.
- One patch to add a new sysfs interface to support hibernation on
Hyper-V from Dexuan Cui.
- Two miscellaneous clean-up patches from Colin and Gustavo.
* tag 'hyperv-next-signed-20210216' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (31 commits)
Revert "Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer"
iommu/hyperv: setup an IO-APIC IRQ remapping domain for root partition
x86/hyperv: implement an MSI domain for root partition
asm-generic/hyperv: import data structures for mapping device interrupts
asm-generic/hyperv: introduce hv_device_id and auxiliary structures
asm-generic/hyperv: update hv_interrupt_entry
asm-generic/hyperv: update hv_msi_entry
x86/hyperv: implement and use hv_smp_prepare_cpus
x86/hyperv: provide a bunch of helper functions
ACPI / NUMA: add a stub function for node_to_pxm()
x86/hyperv: handling hypercall page setup for root
x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary
x86/hyperv: allocate output arg pages if required
clocksource/hyperv: use MSR-based access if running as root
Drivers: hv: vmbus: skip VMBus initialization if Linux is root
x86/hyperv: detect if Linux is the root partition
asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT
hv: hyperv.h: Replace one-element array with flexible-array in struct icmsg_negotiate
hv_netvsc: Restrict configurations on isolated guests
Drivers: hv: vmbus: Enforce 'VMBus version >= 5.2' on isolated guests
...
Remove the 'acpiphp_callback' typedef as it is not used.
Link: https://lore.kernel.org/r/1613443120-4279-1-git-send-email-chen45464546@163.com
Signed-off-by: Chen Lin <chen.lin5@zte.com.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Function cdns_pcie_host_map_dma_ranges() iterates over a PCIe host bridge
DMA ranges using the resource_list_for_each_entry() iterator, returning an
error if cdns_pcie_host_bar_config() fails.
49e427e6bdd1 ("Merge branch 'pci/host-probe-refactor'") botched a merge so
it *always* returned after the first DMA range, even if no error occurred.
Fix the error checking so we return early only when an error occurs.
[bhelgaas: commit log]
Fixes: 49e427e6bdd1 ("Merge branch 'pci/host-probe-refactor'")
Link: https://lore.kernel.org/r/20210216205935.3112661-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Kmemleak reports:
unreferenced object 0xc328de40 (size 64):
comm "kworker/1:1", pid 21, jiffies 4294938212 (age 1484.670s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 e0 d8 fc eb 00 00 00 00 ................
00 00 10 fe 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ad758d10>] pci_register_io_range+0x3c/0x80
[<2c7f139e>] of_pci_range_to_resource+0x48/0xc0
[<f079ecc8>] devm_of_pci_get_host_bridge_resources.constprop.0+0x2ac/0x3ac
[<e999753b>] devm_of_pci_bridge_init+0x60/0x1b8
[<a895b229>] devm_pci_alloc_host_bridge+0x54/0x64
[<e451ddb0>] rcar_pcie_probe+0x2c/0x644
In case a PCI host driver's probe is deferred, the same I/O range may be
allocated again, and be ignored, causing a memory leak.
Fix this by (a) letting logic_pio_register_range() return -EEXIST if the
passed range already exists, so pci_register_io_range() will free it, and
by (b) making pci_register_io_range() not consider -EEXIST an error
condition.
Link: https://lore.kernel.org/r/20210202100332.829047-1-geert+renesas@glider.be
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
We allow up to PCI_EXP_SLTSTA2 registers to be accessed, but the
pcie_cap_regs_behavior[] array only covers up to PCI_EXP_RTSTA. Expand
this array to avoid walking off the end of it.
Do the same for pci_regs_behavior for consistency[], and add a
BUILD_BUG_ON() to also check the bridge->conf structure size.
Fixes: 23a5fba4d941 ("PCI: Introduce PCI bridge emulated config space common logic")
Link: https://lore.kernel.org/r/E1l6z9W-0006Re-MQ@rmk-PC.armlinux.org.uk
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Since 3234ac664a87 ("/dev/mem: Revoke mappings when a driver claims
the region") /dev/kmem zaps PTEs when the kernel requests exclusive
acccess to an iomem region. And with CONFIG_IO_STRICT_DEVMEM, this is
the default for all driver uses.
Except there are two more ways to access PCI BARs: sysfs and proc mmap
support. Let's plug that hole.
For revoke_devmem() to work we need to link our vma into the same
address_space, with consistent vma->vm_pgoff. ->pgoff is already
adjusted, because that's how (io_)remap_pfn_range works, but for the
mapping we need to adjust vma->vm_file->f_mapping. The cleanest way is
to adjust this at at ->open time:
- for sysfs this is easy, now that binary attributes support this. We
just set bin_attr->mapping when mmap is supported
- for procfs it's a bit more tricky, since procfs PCI access has only
one file per device, and access to a specific resource first needs
to be set up with some ioctl calls. But mmap is only supported for
the same resources as sysfs exposes with mmap support, and otherwise
rejected, so we can set the mapping unconditionally at open time
without harm.
A special consideration is for arch_can_pci_mmap_io() - we need to
make sure that the ->f_mapping doesn't alias between ioport and iomem
space. There are only 2 ways in-tree to support mmap of ioports: generic
PCI mmap (ARCH_GENERIC_PCI_MMAP_RESOURCE), and sparc as the single
architecture hand-rolling. Both approaches support ioport mmap through a
special PFN range and not through magic PTE attributes. Aliasing is
therefore not a problem.
The only difference in access checks left is that sysfs PCI mmap does
not check for CAP_RAWIO. I'm not really sure whether that should be
added or not.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kees Cook <keescook@chromium.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210204165831.2703772-3-daniel.vetter@ffwll.ch
We are already doing this for all the regular sysfs files on PCI
devices, but not yet on the legacy io files on the PCI buses. Thus far
no problem, but in the next patch I want to wire up iomem revoke
support. That needs the vfs up and running already to make sure that
iomem_get_mapping() works.
Wire it up exactly like the existing code in
pci_create_sysfs_dev_files(). Note that pci_remove_legacy_files()
doesn't need a check since the one for pci_bus->legacy_io is
sufficient.
An alternative solution would be to implement a callback in sysfs to
set up the address space from iomem_get_mapping() when userspace calls
mmap(). This also works, but Greg didn't really like that just to work
around an ordering issue when the kernel loads initially.
v2: Improve commit message (Bjorn)
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kees Cook <keescook@chromium.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210205133632.2827730-1-daniel.vetter@ffwll.ch
We will soon use the same structure to handle IO-APIC interrupts as
well. Introduce an enum to identify the source and a data structure for
IO-APIC RTE.
While at it, update pci-hyperv.c to use the enum.
No functional change.
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20210203150435.27941-13-wei.liu@kernel.org
WARN_ON(in_interrupt()) is used for historic reasons to ensure proper usage
of down_read() and predates might_sleep() and lockdep.
down_read() has might_sleep() which also catches users from preemption
disabled regions while in_interrupt() does not.
Remove WARN_ON(in_interrupt()) because there are now better debugging
facilities.
Link: https://lore.kernel.org/r/20210208194400.384003-1-bigeasy@linutronix.de
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cadence controller will not initiate autonomous speed change if strapped
as Gen2. The Retrain Link bit is set as quirk to enable this speed change.
Link: https://lore.kernel.org/r/20210209144622.26683-3-nadeem@cadence.com
Signed-off-by: Nadeem Athani <nadeem@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CONFIG_PCI_DEBUG=y adds -DDEBUG to CFLAGS, which enables things like
pr_debug() and dev_dbg() (and hence pci_dbg()). Previously we added
-DDEBUG for files in drivers/pci/, but not files in subdirectories of
drivers/pci/.
Add -DDEBUG to CFLAGS for all files below drivers/pci/ so CONFIG_PCI_DEBUG
applies to the entire hierarchy.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/1612438215-33105-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Junhao He <hejunhao2@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
The PCIe Bandwidth Change Notification feature logs messages when the link
bandwidth changes. Some users have reported that these messages occur
often enough to significantly reduce NVMe performance. GPUs also seem to
generate these messages.
We don't know why the link bandwidth changes, but in the reported cases
there's no indication that it's caused by hardware failures.
Remove the bandwidth change notifications for now. Hopefully we can add
this back when we have a better understanding of why this happens and how
we can make the messages useful instead of overwhelming.
Link: https://lore.kernel.org/r/20200115221008.GA191037@google.com/
Link: https://lore.kernel.org/r/155605909349.3575.13433421148215616375.stgit@gimli.home/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206197
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Configuration Request Retry Status ("CRS") must be supported by all PCIe
devices. CRS Software Visibility is an optional feature that enables a
Root Port to make CRS visible to software by returning a special data value
to complete a config read.
Clarify a comment to say that it is "CRS SV", not "CRS", that can be
enabled.
Link: https://lore.kernel.org/r/20210126213503.2922848-1-helgaas@kernel.org
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
After 34e3207205ef ("PCI: handle positive error codes"),
pci_user_read_config_*() and pci_user_write_config_*() return 0 or negative
errno values, not PCIBIOS_* values like PCIBIOS_SUCCESSFUL or
PCIBIOS_BAD_REGISTER_NUMBER.
Remove comparisons with PCIBIOS_SUCCESSFUL and check only for non-zero. It
happens that PCIBIOS_SUCCESSFUL is zero, so this is not a functional
change, but it aligns this code with the user accessors.
[bhelgaas: commit log]
Fixes: 34e3207205ef ("PCI: handle positive error codes")
Link: https://lore.kernel.org/r/f1220314-e518-1e18-bf94-8e6f8c703758@gmail.com
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This reverts commit 4257f7e008ea394fcecc050f1569c3503b8bcc15.
Kenneth reported that after 4257f7e008ea, he sees a torrent of disk I/O
errors on his NVMe device after suspend/resume until a reboot.
Link: https://lore.kernel.org/linux-pci/20201228040513.GA611645@bjorn-Precision-5520/
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
The for_each_available_child_of_node helper internally makes use of the
of_get_next_available_child() which performs an of_node_get() on each
iteration when searching for next available child node.
Should an available child node be found, then it would return a device
node pointer with reference count incremented, thus early return from
the middle of the loop requires an explicit of_node_put() to prevent
reference count leak.
To stop the reference leak, explicitly call of_node_put() before
returning after an error occurred.
Link: https://lore.kernel.org/r/20210120184810.3068794-1-kw@linux.com
Signed-off-by: Krzysztof Wilczyński <kw@linux.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Also drop the reference count of the node on error path.
Link: https://lore.kernel.org/r/20210120143745.699-1-bianpan2016@163.com
Fixes: 508f610648b9 ("PCI: xilinx-cpm: Add Versal CPM Root Port driver")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
The tango platform is getting removed, so the driver is no
longer needed.
Link: https://lore.kernel.org/r/20210120150800.1650898-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Cc: Marc Gonzalez <marc.w.gonzalez@free.fr>
Cc: Mans Rullgard <mans@mansr.com>
Call irq_set_chained_handler_and_data() to clear the chained handler
and the handler's data under irq_desc->lock.
See also 2cf5a03cb29d ("PCI/keystone: Fix race in installing chained
IRQ handler").
Link: https://lore.kernel.org/r/20210115211532.19837-1-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
All the defconfig files have replaced PCIE_RCAR config option with
PCIE_RCAR_HOST config option which built the same driver, so we can
now safely drop PCIE_RCAR config option.
Link: https://lore.kernel.org/r/20201229170848.18482-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
BCM4908 uses external MISC block for controlling PERST# signal. Use it
as a reset controller.
Link: https://lore.kernel.org/r/20201210180421.7230-3-zajec5@gmail.com
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Fix a race where a pending interrupt could be received and the handler
called before the handler's data has been setup, by converting to
irq_set_chained_handler_and_data().
See also 2cf5a03cb29d ("PCI/keystone: Fix race in installing chained IRQ
handler").
Based on the mail discussion, it seems ok to drop the error handling.
Link: https://lore.kernel.org/r/20210115212435.19940-3-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Call irq_set_chained_handler_and_data() to clear the chained handler
and the handler's data under irq_desc->lock.
See also 2cf5a03cb29d ("PCI/keystone: Fix race in installing chained
IRQ handler").
Link: https://lore.kernel.org/r/20210115212435.19940-2-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Call irq_set_chained_handler_and_data() to clear the chained handler
and the handler's data under irq_desc->lock.
See also 2cf5a03cb29d ("PCI/keystone: Fix race in installing chained
IRQ handler").
Link: https://lore.kernel.org/r/20210115212435.19940-1-martin@kaiser.cx
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This fixes MSI operation on legacy PCI cards, which cannot issue 64bit MSIs.
The R-Car controller only has one MSI trigger address instead of two, one
for 64bit and one for 32bit MSI, set the address to 32bit PCIe space so that
legacy PCI cards can also trigger MSIs.
Link: https://lore.kernel.org/r/20201016120431.7062-1-marek.vasut@gmail.com
Fixes: 290c1fb35860 ("PCI: rcar: Add MSI support for PCIe")
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: linux-renesas-soc@vger.kernel.org
The _DSM #5 method in the ACPI host bridge object tells us whether the OS
must preserve the resource assignments done by firmware. If this is the
case, we should not permit drivers to resize BARs on the fly. Make
pci_resize_resource() take this into account.
Link: https://lore.kernel.org/r/20210109095353.13417-1-ardb@kernel.org
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org # v5.4+
There's three ways to access PCI BARs from userspace: /dev/mem, sysfs
files, and the old proc interface. Two check against
iomem_is_exclusive, proc never did. And with CONFIG_IO_STRICT_DEVMEM,
this starts to matter, since we don't want random userspace having
access to PCI BARs while a driver is loaded and using it.
Fix this by adding the same iomem_is_exclusive() check we already have
on the sysfs side in pci_mmap_resource().
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
References: 90a545e98126 ("restrict /dev/mem to idle io memory ranges")
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Kees Cook <keescook@chromium.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201127164131.2244124-9-daniel.vetter@ffwll.ch
RX 5600 XT Pulse advertises support for BAR 0 being 256MB, 512MB,
or 1GB, but it also supports 2GB, 4GB, and 8GB. Add a rebar
size quirk so that the BAR 0 is big enough to cover complete VARM.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20210107175017.15893-5-nirmoy.das@amd.com
Users of pci_resize_resource() need a way to calculate BAR size
from desired bytes. Add a helper function and export it so that
modular drivers can use it.
Signed-off-by: Darren Salt <devspam@moreofthesa.me.uk>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20210107175017.15893-3-nirmoy.das@amd.com
Commit 660c486590aa ("PCI: dwc: Set 32-bit DMA mask for MSI target address
allocation") added dma_mask_set() call to explicitly set 32-bit DMA mask
for MSI message mapping, but for now it throws a warning on ret == 0, while
dma_set_mask() returns 0 in case of success.
Fix this by inverting the condition.
[bhelgaas: join string to make it greppable]
Fixes: 660c486590aa ("PCI: dwc: Set 32-bit DMA mask for MSI target address allocation")
Link: https://lore.kernel.org/r/20201222150708.67983-1-alobakin@pm.me
Signed-off-by: Alexander Lobakin <alobakin@pm.me>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Commit b9ac0f9dc8ea ("PCI: dwc: Move dw_pcie_setup_rc() to DWC common
code") broke enumeration of downstream devices on Tegra:
In non-working case (next-20201211):
0001:00:00.0 PCI bridge: NVIDIA Corporation Device 1ad2 (rev a1)
0001:01:00.0 SATA controller: Marvell Technology Group Ltd. Device 9171 (rev 13)
0005:00:00.0 PCI bridge: NVIDIA Corporation Device 1ad0 (rev a1)
In working case (v5.10-rc7):
0001:00:00.0 PCI bridge: Molex Incorporated Device 1ad2 (rev a1)
0001:01:00.0 SATA controller: Marvell Technology Group Ltd. Device 9171 (rev 13)
0005:00:00.0 PCI bridge: Molex Incorporated Device 1ad0 (rev a1)
0005:01:00.0 PCI bridge: PLX Technology, Inc. Device 3380 (rev ab)
0005:02:02.0 PCI bridge: PLX Technology, Inc. Device 3380 (rev ab)
0005:03:00.0 USB controller: PLX Technology, Inc. Device 3380 (rev ab)
The problem seems to be dw_pcie_setup_rc() is now called twice before and
after the link up handling. The fix is to move Tegra's link up handling to
.start_link() function like other DWC drivers. Tegra is a bit more
complicated than others as it re-inits the whole DWC controller to retry
the link. With this, the initialization ordering is restored to match the
prior sequence.
Fixes: b9ac0f9dc8ea ("PCI: dwc: Move dw_pcie_setup_rc() to DWC common code")
Link: https://lore.kernel.org/r/20201218143905.1614098-1-robh@kernel.org
Reported-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Tested-by: Mian Yousaf Kaukab <ykaukab@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Vidya Sagar <vidyas@nvidia.com>
accesses, inefficient and disfunctional code. The goal is to remove the
export of irq_to_desc() to prevent these things from creeping up again.
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Merge tag 'irq-core-2020-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"This is the second attempt after the first one failed miserably and
got zapped to unblock the rest of the interrupt related patches.
A treewide cleanup of interrupt descriptor (ab)use with all sorts of
racy accesses, inefficient and disfunctional code. The goal is to
remove the export of irq_to_desc() to prevent these things from
creeping up again"
* tag 'irq-core-2020-12-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
genirq: Restrict export of irq_to_desc()
xen/events: Implement irq distribution
xen/events: Reduce irq_info:: Spurious_cnt storage size
xen/events: Only force affinity mask for percpu interrupts
xen/events: Use immediate affinity setting
xen/events: Remove disfunct affinity spreading
xen/events: Remove unused bind_evtchn_to_irq_lateeoi()
net/mlx5: Use effective interrupt affinity
net/mlx5: Replace irq_to_desc() abuse
net/mlx4: Use effective interrupt affinity
net/mlx4: Replace irq_to_desc() abuse
PCI: mobiveil: Use irq_data_get_irq_chip_data()
PCI: xilinx-nwl: Use irq_data_get_irq_chip_data()
NTB/msi: Use irq_has_action()
mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc
pinctrl: nomadik: Use irq_has_action()
drm/i915/pmu: Replace open coded kstat_irqs() copy
drm/i915/lpe_audio: Remove pointless irq_to_desc() usage
s390/irq: Use irq_desc_kstat_cpu() in show_msi_interrupt()
parisc/irq: Use irq_desc_kstat_cpu() in show_interrupts()
...
A smaller set of patches, nothing stands out as being particularly major
this cycle:
- Driver bug fixes and updates: bnxt_re, cxgb4, rxe, hns, i40iw, cxgb4,
mlx4 and mlx5
- Bug fixes and polishing for the new rts ULP
- Cleanup of uverbs checking for allowed driver operations
- Use sysfs_emit all over the place
- Lots of bug fixes and clarity improvements for hns
- hip09 support for hns
- NDR and 50/100Gb signaling rates
- Remove dma_virt_ops and go back to using the IB DMA wrappers
- mlx5 optimizations for contiguous DMA regions
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"A smaller set of patches, nothing stands out as being particularly
major this cycle. The biggest item would be the new HIP09 HW support
from HNS, otherwise it was pretty quiet for new work here:
- Driver bug fixes and updates: bnxt_re, cxgb4, rxe, hns, i40iw,
cxgb4, mlx4 and mlx5
- Bug fixes and polishing for the new rts ULP
- Cleanup of uverbs checking for allowed driver operations
- Use sysfs_emit all over the place
- Lots of bug fixes and clarity improvements for hns
- hip09 support for hns
- NDR and 50/100Gb signaling rates
- Remove dma_virt_ops and go back to using the IB DMA wrappers
- mlx5 optimizations for contiguous DMA regions"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (147 commits)
RDMA/cma: Don't overwrite sgid_attr after device is released
RDMA/mlx5: Fix MR cache memory leak
RDMA/rxe: Use acquire/release for memory ordering
RDMA/hns: Simplify AEQE process for different types of queue
RDMA/hns: Fix inaccurate prints
RDMA/hns: Fix incorrect symbol types
RDMA/hns: Clear redundant variable initialization
RDMA/hns: Fix coding style issues
RDMA/hns: Remove unnecessary access right set during INIT2INIT
RDMA/hns: WARN_ON if get a reserved sl from users
RDMA/hns: Avoid filling sl in high 3 bits of vlan_id
RDMA/hns: Do shift on traffic class when using RoCEv2
RDMA/hns: Normalization the judgment of some features
RDMA/hns: Limit the length of data copied between kernel and userspace
RDMA/mlx4: Remove bogus dev_base_lock usage
RDMA/uverbs: Fix incorrect variable type
RDMA/core: Do not indicate device ready when device enablement fails
RDMA/core: Clean up cq pool mechanism
RDMA/core: Update kernel documentation for ib_create_named_qp()
MAINTAINERS: SOFT-ROCE: Change Zhu Yanjun's email address
...
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Merge tag 'pci-v5.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Decode PCIe 64 GT/s link speed (Gustavo Pimentel)
- Remove unused HAVE_PCI_SET_MWI (Heiner Kallweit)
- Reduce pci_set_cacheline_size() message to debug level (Heiner
Kallweit)
- Fix pci_slot_release() NULL pointer dereference (Jubin Zhong)
- Unify ECAM constants in native PCI Express drivers (Krzysztof
Wilczyński)
- Return u8 from pci_find_capability() and similar (Puranjay Mohan)
- Return u16 from pci_find_ext_capability() and similar (Bjorn
Helgaas)
- Fix ACPI companion lookup for device 0 on the root bus (Rafael J.
Wysocki)
Resource management:
- Keep both device and resource name for config space remaps
(Alexander Lobakin)
- Bounds-check command-line resource alignment requests (Bjorn
Helgaas)
- Fix overflow in command-line resource alignment requests (Colin Ian
King)
Driver binding:
- Avoid duplicate IDs in driver dynamic IDs list (Zhenzhong Duan)
Power management:
- Save/restore Precision Time Measurement Capability for
suspend/resume (David E. Box)
- Disable PTM during suspend to save power (David E. Box)
- Add sysfs attribute for device power state (Maximilian Luz)
- Rename pci_wakeup_bus() to pci_resume_bus() (Mika Westerberg)
- Do not generate wakeup event when runtime resuming device (Mika
Westerberg)
- Save/restore ASPM L1SS Capability for suspend/resume (Vidya Sagar)
Virtualization:
- Mark AMD Raven iGPU ATS as broken in some platforms (Alex Deucher)
- Add function 1 DMA alias quirk for Marvell 9215 SATA controller
(Bjorn Helgaas)
MSI:
- Disable MSI for Pericom PCIe-USB adapter (Andy Shevchenko)
- Improve warnings for 32-bit-limited MSI support (Vidya Sagar)
Error handling:
- Cache RCEC EA Capability offset in pci_init_capabilities() (Sean V
Kelley)
- Rename reset_link() to reset_subordinates() (Sean V Kelley)
- Write AER Capability only when we control it (Sean V Kelley)
- Clear AER status only when we control AER (Sean V Kelley)
- Bind RCEC devices to the Root Port driver (Qiuxu Zhuo)
- Recover from RCiEP AER errors (Qiuxu Zhuo)
- Recover from RCEC AER errors (Sean V Kelley)
- Add pcie_link_rcec() to associate RCiEPs (Sean V Kelley)
- Add pcie_walk_rcec() to RCEC AER handling (Sean V Kelley)
- Add pcie_walk_rcec() to RCEC PME handling (Sean V Kelley)
- Add RCEC AER error injection support (Qiuxu Zhuo)
Broadcom iProc PCIe controller driver:
- Fix out-of-bound array accesses (Bharat Gooty)
- Invalidate correct PAXB inbound windows (Roman Bacik)
- Enhance PCIe Link information display (Srinath Mannam)
Cadence PCIe controller driver:
- Make "cdns,max-outbound-regions" property optional (Kishon Vijay
Abraham I)
Intel VMD host bridge driver:
- Offset client MSI-X vectors (Jon Derrick)
- Update type of __iomem pointers (Krzysztof Wilczyński)
NVIDIA Tegra PCIe controller driver:
- Move "dbi" accesses to post common DWC initialization (Vidya Sagar)
- Read "dbi" base address to program in application logic (Vidya
Sagar)
- Fix ASPM-L1SS advertisement disable code (Vidya Sagar)
- Set DesignWare IP version (Vidya Sagar)
- Continue unconfig sequence even if parts fail (Vidya Sagar)
- Check return value of tegra_pcie_init_controller() (Vidya Sagar)
- Disable LTSSM during L2 entry (Vidya Sagar)
Qualcomm PCIe controller driver:
- Document PCIe bindings for SM8250 SoC (Manivannan Sadhasivam)
- Add SM8250 SoC support (Manivannan Sadhasivam)
- Add support for configuring BDF to SID mapping for SM8250
(Manivannan Sadhasivam)
Renesas R-Car PCIe controller driver:
- rcar: Drop unused members from struct rcar_pcie_host (Lad
Prabhakar)
- PCI: rcar-pci-host: Document r8a774e1 bindings (Lad Prabhakar)
- PCI: rcar-pci-host: Convert bindings to json-schema (Yoshihiro
Shimoda)
- PCI: rcar-pci-host: Document r8a77965 bindings (Yoshihiro Shimoda)
Samsung Exynos PCIe controller driver:
- Rework driver to support Exynos5433 PCIe PHY (Jaehoon Chung)
- Rework driver to support Exynos5433 variant (Jaehoon Chung)
- Drop samsung,exynos5440-pcie binding (Marek Szyprowski)
- Add the samsung,exynos-pcie binding (Marek Szyprowski)
- Add the samsung,exynos-pcie-phy binding (Marek Szyprowski)
Synopsys DesignWare PCIe controller driver:
- Support multiple ATU memory regions (Rob Herring)
- Move intel-gw ATU offset out of driver match data (Rob Herring)
- Move "dbi", "dbi2", and "addr_space" resource setup into common
code (Rob Herring)
- Remove intel-gw unneeded function wrappers (Rob Herring)
- Ensure all outbound ATU windows are reset (Rob Herring)
- Use the common MSI irq_chip in dra7xx (Rob Herring)
- Drop the .set_num_vectors() host op (Rob Herring)
- Move MSI interrupt setup into DWC common code (Rob Herring)
- Rework MSI initialization (Rob Herring)
- Move link handling into common code (Rob Herring)
- Move dw_pcie_msi_init() into core (Rob Herring)
- Move dw_pcie_setup_rc() to DWC common code (Rob Herring)
- Remove unnecessary wrappers around dw_pcie_host_init() (Rob
Herring)
- Drop keystone duplicated 'num-viewport'" (Rob Herring)
- Move inbound and outbound windows to common struct (Rob Herring)
- Detect number of iATU windows (Rob Herring)
- Warn if non-prefetchable memory aperture size is > 32-bit (Vidya
Sagar)
- Add support to program ATU for >4GB memory (Vidya Sagar)
- Set 32-bit DMA mask for MSI target address allocation (Vidya Sagar)
TI J721E PCIe driver:
- Fix "ti,syscon-pcie-ctrl" to take argument (Kishon Vijay Abraham I)
- Add host mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham
I)
- Add EP mode dt-bindings for TI's J7200 SoC (Kishon Vijay Abraham I)
- Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg
(Kishon Vijay Abraham I)
TI Keystone PCIe controller driver:
- Enable compile-testing on !ARM (Alex Dewar)"
* tag 'pci-v5.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (100 commits)
PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller
PCI/ACPI: Fix companion lookup for device 0 on the root bus
PCI: Keep both device and resource name for config space remaps
PCI: xgene: Removed unused ".bus_shift" initialisers from pci-xgene.c
PCI: vmd: Update type of the __iomem pointers
PCI: iproc: Convert to use the new ECAM constants
PCI: thunder-pem: Add constant for custom ".bus_shift" initialiser
PCI: Unify ECAM constants in native PCI Express drivers
PCI: Disable PTM during suspend to save power
PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume
PCI: Mark AMD Raven iGPU ATS as broken in some platforms
PCI: j721e: Get offset within "syscon" from "ti,syscon-pcie-ctrl" phandle arg
dt-bindings: PCI: Add EP mode dt-bindings for TI's J7200 SoC
dt-bindings: PCI: Add host mode dt-bindings for TI's J7200 SoC
dt-bindings: pci: ti,j721e: Fix "ti,syscon-pcie-ctrl" to take argument
PCI: dwc: Set 32-bit DMA mask for MSI target address allocation
PCI: qcom: Add support for configuring BDF to SID mapping for SM8250
PCI: Reduce pci_set_cacheline_size() message to debug level
PCI: Remove unused HAVE_PCI_SET_MWI
PCI: qcom: Add SM8250 SoC support
...
- Use local_clock() instead of jiffies in the cpufreq statistics to
improve accuracy (Viresh Kumar).
- Fix up OPP usage in the cpufreq-dt and qcom-cpufreq-nvmem cpufreq
drivers (Viresh Kumar).
- Clean up the cpufreq core, the intel_pstate driver and the
schedutil cpufreq governor (Rafael Wysocki).
- Fix up error code paths in the sti-cpufreq and mediatek cpufreq
drivers (Yangtao Li, Qinglang Miao).
- Fix cpufreq_online() to return error codes instead of success (0)
in all cases when it fails (Wang ShaoBo).
- Add mt8167 support to the mediatek cpufreq driver and blacklist
mt8516 in the cpufreq-dt-platdev driver (Fabien Parent).
- Modify the tegra194 cpufreq driver to always return values from
the frequency table as the current frequency and clean up that
driver (Sumit Gupta, Jon Hunter).
- Modify the arm_scmi cpufreq driver to allow it to discover the
power scale present in the performance protocol and provide this
information to the Energy Model (Lukasz Luba).
- Add missing MODULE_DEVICE_TABLE to several cpufreq drivers (Pali
Rohár).
- Clean up the CPPC cpufreq driver (Ionela Voinescu).
- Fix NVMEM_IMX_OCOTP dependency in the imx cpufreq driver (Arnd
Bergmann).
- Rework the poling interval selection for the polling state in
cpuidle (Mel Gorman).
- Enable suspend-to-idle for PSCI OSI mode in the PSCI cpuidle
driver (Ulf Hansson).
- Modify the OPP framework to support empty (node-less) OPP tables
in DT for passing dependency information (Nicola Mazzucato).
- Fix potential lockdep issue in the OPP core and clean up the OPP
core (Viresh Kumar).
- Modify dev_pm_opp_put_regulators() to accept a NULL argument and
update its users accordingly (Viresh Kumar).
- Add frequency changes tracepoint to devfreq (Matthias Kaehlcke).
- Add support for governor feature flags to devfreq, make devfreq
sysfs file permissions depend on the governor and clean up the
devfreq core (Chanwoo Choi).
- Clean up the tegra20 devfreq driver and deprecate it to allow
another driver based on EMC_STAT to be used instead of it (Dmitry
Osipenko).
- Add interconnect support to the tegra30 devfreq driver, allow it
to take the interconnect and OPP information from DT and clean it
up ((Dmitry Osipenko).
- Add interconnect support to the exynos-bus devfreq driver along
with interconnect properties documentation (Sylwester Nawrocki).
- Add suport for AMD Fam17h and Fam19h processors to the RAPL power
capping driver (Victor Ding, Kim Phillips).
- Fix handling of overly long constraint names in the powercap
framework (Lukasz Luba).
- Fix the wakeup configuration handling for bridges in the ACPI
device power management core (Rafael Wysocki).
- Add support for using an abstract scale for power units in the
Energy Model (EM) and document it (Lukasz Luba).
- Add em_cpu_energy() micro-optimization to the EM (Pavankumar
Kondeti).
- Modify the generic power domains (genpd) framwework to support
suspend-to-idle (Ulf Hansson).
- Fix creation of debugfs nodes in genpd (Thierry Strudel).
- Clean up genpd (Lina Iyer).
- Clean up the core system-wide suspend code and make it print
driver flags for devices with debug enabled (Alex Shi, Patrice
Chotard, Chen Yu).
- Modify the ACPI system reboot code to make it prepare for system
power off to avoid confusing the platform firmware (Kai-Heng Feng).
- Update the pm-graph (multiple changes, mostly usability-related)
and cpupower (online and offline CPU information support) PM
utilities (Todd Brandt, Brahadambal Srinivasan).
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Merge tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These update cpufreq (core and drivers), cpuidle (polling state
implementation and the PSCI driver), the OPP (operating performance
points) framework, devfreq (core and drivers), the power capping RAPL
(Running Average Power Limit) driver, the Energy Model support, the
generic power domains (genpd) framework, the ACPI device power
management, the core system-wide suspend code and power management
utilities.
Specifics:
- Use local_clock() instead of jiffies in the cpufreq statistics to
improve accuracy (Viresh Kumar).
- Fix up OPP usage in the cpufreq-dt and qcom-cpufreq-nvmem cpufreq
drivers (Viresh Kumar).
- Clean up the cpufreq core, the intel_pstate driver and the
schedutil cpufreq governor (Rafael Wysocki).
- Fix up error code paths in the sti-cpufreq and mediatek cpufreq
drivers (Yangtao Li, Qinglang Miao).
- Fix cpufreq_online() to return error codes instead of success (0)
in all cases when it fails (Wang ShaoBo).
- Add mt8167 support to the mediatek cpufreq driver and blacklist
mt8516 in the cpufreq-dt-platdev driver (Fabien Parent).
- Modify the tegra194 cpufreq driver to always return values from the
frequency table as the current frequency and clean up that driver
(Sumit Gupta, Jon Hunter).
- Modify the arm_scmi cpufreq driver to allow it to discover the
power scale present in the performance protocol and provide this
information to the Energy Model (Lukasz Luba).
- Add missing MODULE_DEVICE_TABLE to several cpufreq drivers (Pali
Rohár).
- Clean up the CPPC cpufreq driver (Ionela Voinescu).
- Fix NVMEM_IMX_OCOTP dependency in the imx cpufreq driver (Arnd
Bergmann).
- Rework the poling interval selection for the polling state in
cpuidle (Mel Gorman).
- Enable suspend-to-idle for PSCI OSI mode in the PSCI cpuidle driver
(Ulf Hansson).
- Modify the OPP framework to support empty (node-less) OPP tables in
DT for passing dependency information (Nicola Mazzucato).
- Fix potential lockdep issue in the OPP core and clean up the OPP
core (Viresh Kumar).
- Modify dev_pm_opp_put_regulators() to accept a NULL argument and
update its users accordingly (Viresh Kumar).
- Add frequency changes tracepoint to devfreq (Matthias Kaehlcke).
- Add support for governor feature flags to devfreq, make devfreq
sysfs file permissions depend on the governor and clean up the
devfreq core (Chanwoo Choi).
- Clean up the tegra20 devfreq driver and deprecate it to allow
another driver based on EMC_STAT to be used instead of it (Dmitry
Osipenko).
- Add interconnect support to the tegra30 devfreq driver, allow it to
take the interconnect and OPP information from DT and clean it up
(Dmitry Osipenko).
- Add interconnect support to the exynos-bus devfreq driver along
with interconnect properties documentation (Sylwester Nawrocki).
- Add suport for AMD Fam17h and Fam19h processors to the RAPL power
capping driver (Victor Ding, Kim Phillips).
- Fix handling of overly long constraint names in the powercap
framework (Lukasz Luba).
- Fix the wakeup configuration handling for bridges in the ACPI
device power management core (Rafael Wysocki).
- Add support for using an abstract scale for power units in the
Energy Model (EM) and document it (Lukasz Luba).
- Add em_cpu_energy() micro-optimization to the EM (Pavankumar
Kondeti).
- Modify the generic power domains (genpd) framwework to support
suspend-to-idle (Ulf Hansson).
- Fix creation of debugfs nodes in genpd (Thierry Strudel).
- Clean up genpd (Lina Iyer).
- Clean up the core system-wide suspend code and make it print driver
flags for devices with debug enabled (Alex Shi, Patrice Chotard,
Chen Yu).
- Modify the ACPI system reboot code to make it prepare for system
power off to avoid confusing the platform firmware (Kai-Heng Feng).
- Update the pm-graph (multiple changes, mostly usability-related)
and cpupower (online and offline CPU information support) PM
utilities (Todd Brandt, Brahadambal Srinivasan)"
* tag 'pm-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (86 commits)
cpufreq: Fix cpufreq_online() return value on errors
cpufreq: Fix up several kerneldoc comments
cpufreq: stats: Use local_clock() instead of jiffies
cpufreq: schedutil: Simplify sugov_update_next_freq()
cpufreq: intel_pstate: Simplify intel_cpufreq_update_pstate()
PM: domains: create debugfs nodes when adding power domains
opp: of: Allow empty opp-table with opp-shared
dt-bindings: opp: Allow empty OPP tables
media: venus: dev_pm_opp_put_*() accepts NULL argument
drm/panfrost: dev_pm_opp_put_*() accepts NULL argument
drm/lima: dev_pm_opp_put_*() accepts NULL argument
PM / devfreq: exynos: dev_pm_opp_put_*() accepts NULL argument
cpufreq: qcom-cpufreq-nvmem: dev_pm_opp_put_*() accepts NULL argument
cpufreq: dt: dev_pm_opp_put_regulators() accepts NULL argument
opp: Allow dev_pm_opp_put_*() APIs to accept NULL opp_table
opp: Don't create an OPP table from dev_pm_opp_get_opp_table()
cpufreq: dt: Don't (ab)use dev_pm_opp_get_opp_table() to create OPP table
opp: Reduce the size of critical section in _opp_kref_release()
PM / EM: Micro optimization in em_cpu_energy
cpufreq: arm_scmi: Discover the power scale in performance protocol
...
- Support multiple ATU memory regions (Rob Herring)
- Warn if non-prefetchable memory aperture is > 32-bit (Vidya Sagar)
- Allow programming ATU for >4GB memory (Vidya Sagar)
- Move ATU offset out of driver match data (Rob Herring)
- Move "dbi", "dbi2", and "addr_space" resource setup to common code (Rob
Herring)
- Remove unneeded function wrappers (Rob Herring)
- Ensure all outbound ATU windows are reset to reduce dependencies on
bootloader (Rob Herring)
- Use the default MSI irq_chip for dra7xx (Rob Herring)
- Drop the .set_num_vectors() host op (Rob Herring)
- Move MSI interrupt setup into DWC common code (Rob Herring)
- Rework and simplify DWC MSI initialization (Rob Herring)
- Move link handling to DWC common code (Rob Herring)
- Move dw_pcie_msi_init() calls to DWC common code (Rob Herring)
- Move dw_pcie_setup_rc() calls to DWC common code (Rob Herring)
- Remove unnecessary wrappers around dw_pcie_host_init() (Rob Herring)
- Revert "keystone: Drop duplicated 'num-viewport'" to prepare for
detecting number of iATU regions without help from DT (Rob Herring)
- Move inbound and outbound windows to common struct (Rob Herring)
- Detect number of DWC iATU windows from device registers (Rob Herring)
- Drop samsung,exynos5440-pcie binding (Marek Szyprowski)
- Add samsung,exynos-pcie and samsung,exynos-pcie-phy bindings for
Exynos5433 variant (Marek Szyprowski)
- Rework phy-exynos-pcie driver to support Exynos5433 PCIe PHY (Jaehoon
Chung)
- Rework pci-exynos.c to support Exynos5433 PCIe host (Jaehoon Chung)
- Move tegra "dbi" accesses to post common DWC initialization (Vidya Sagar)
- Read tegra dbi" base address in application logic (Vidya Sagar)
- Fix tegra ASPM-L1SS advertisement disable code (Vidya Sagar)
- Set Tegra194 DesignWare IP version to 0x490A (Vidya Sagar)
- Continue tegra unconfig sequence even if parts fail (Vidya Sagar)
- Check return value of tegra_pcie_init_controller() (Vidya Sagar)
- Disable tegra LTSSM during L2 entry (Vidya Sagar)
- Add SM8250 SoC PCIe DT bindings and support (Manivannan Sadhasivam)
- Add SM8250 BDF to SID mapping (Manivannan Sadhasivam)
- Set 32-bit DMA mask for DWC MSI target address allocation (Vidya Sagar)
* remotes/lorenzo/pci/dwc:
PCI: dwc: Set 32-bit DMA mask for MSI target address allocation
PCI: qcom: Add support for configuring BDF to SID mapping for SM8250
PCI: qcom: Add SM8250 SoC support
dt-bindings: pci: qcom: Document PCIe bindings for SM8250 SoC
PCI: tegra: Disable LTSSM during L2 entry
PCI: tegra: Check return value of tegra_pcie_init_controller()
PCI: tegra: Continue unconfig sequence even if parts fail
PCI: tegra: Set DesignWare IP version
PCI: tegra: Fix ASPM-L1SS advertisement disable code
PCI: tegra: Read "dbi" base address to program in application logic
PCI: tegra: Move "dbi" accesses to post common DWC initialization
PCI: dwc: exynos: Rework the driver to support Exynos5433 variant
phy: samsung: phy-exynos-pcie: rework driver to support Exynos5433 PCIe PHY
dt-bindings: phy: exynos: add the samsung,exynos-pcie-phy binding
dt-bindings: PCI: exynos: add the samsung,exynos-pcie binding
dt-bindings: PCI: exynos: drop samsung,exynos5440-pcie binding
PCI: dwc: Detect number of iATU windows
PCI: dwc: Move inbound and outbound windows to common struct
Revert "PCI: dwc/keystone: Drop duplicated 'num-viewport'"
PCI: dwc: Remove unnecessary wrappers around dw_pcie_host_init()
PCI: dwc: Move dw_pcie_setup_rc() to DWC common code
PCI: dwc: Move dw_pcie_msi_init() into core
PCI: dwc: Move link handling into common code
PCI: dwc: Rework MSI initialization
PCI: dwc: Move MSI interrupt setup into DWC common code
PCI: dwc: Drop the .set_num_vectors() host op
PCI: dwc/dra7xx: Use the common MSI irq_chip
PCI: dwc: Ensure all outbound ATU windows are reset
PCI: dwc/intel-gw: Remove some unneeded function wrappers
PCI: dwc: Move "dbi", "dbi2", and "addr_space" resource setup into common code
PCI: dwc/intel-gw: Move ATU offset out of driver match data
PCI: dwc: Add support to program ATU for >4GB memory
PCI: of: Warn if non-prefetchable memory aperture size is > 32-bit
PCI: dwc: Support multiple ATU memory regions
