Merge branch 'pci/enumeration'

- Consolidate _HPP & _HPX code in pci-acpi.h and remove unnecessary
struct hotplug_program_ops (Krzysztof Wilczynski)

- Fixup PCIe device

Merge branch 'pci/enumeration'

- Consolidate _HPP & _HPX code in pci-acpi.h and remove unnecessary
struct hotplug_program_ops (Krzysztof Wilczynski)

- Fixup PCIe device types to remove the need for dev->has_secondary_link
(Mika Westerberg)

* pci/enumeration:
PCI: Get rid of dev->has_secondary_link flag
PCI: Make pcie_downstream_port() available outside of access.c
PCI/ACPI: Remove unnecessary struct hotplug_program_ops
PCI/ACPI: Move _HPP & _HPX functions to pci-acpi.c
PCI/ACPI: Rename _HPX structs from hpp_* to hpx_*

show more ...

PCI: Get rid of dev->has_secondary_link flag

In some systems, the Device/Port Type in the PCI Express Capabilities
register incorrectly identifies upstream ports as downstream ports.

PCI: Get rid of dev->has_secondary_link flag

In some systems, the Device/Port Type in the PCI Express Capabilities
register incorrectly identifies upstream ports as downstream ports.

d0751b98dfa3 ("PCI: Add dev->has_secondary_link to track downstream PCIe
links") addressed this by adding pci_dev.has_secondary_link, which is set
for downstream ports. But this is confusing because pci_pcie_type()
sometimes gives the wrong answer, and it's not obvious that we should use
pci_dev.has_secondary_link instead.

Reduce the confusion by correcting the type of the port itself so that
pci_pcie_type() returns the actual type regardless of what the Device/Port
Type register claims it is. Update the users to call pci_pcie_type() and
pcie_downstream_port() accordingly, and remove pci_dev.has_secondary_link
completely.

Link: https://lore.kernel.org/linux-pci/20190703133953.GK128603@google.com/
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20190822085553.62697-2-mika.westerberg@linux.intel.com
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

show more ...

PCI: Move ASPM declarations to linux/pci.h

Move ASPM definitions and function prototypes from include/linux/pci-aspm.h
to include/linux/pci.h so users only need to include <linux/pci.h>:

PCI: Move ASPM declarations to linux/pci.h

Move ASPM definitions and function prototypes from include/linux/pci-aspm.h
to include/linux/pci.h so users only need to include <linux/pci.h>:

PCIE_LINK_STATE_L0S
PCIE_LINK_STATE_L1
PCIE_LINK_STATE_CLKPM
pci_disable_link_state()
pci_disable_link_state_locked()
pcie_no_aspm()

No functional changes intended.

Link: https://lore.kernel.org/r/20190827095620.11213-1-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Add pcie_aspm_enabled()

Add a function checking whether or not PCIe ASPM has been enabled for
a given device.

It will be used by the NVMe driver to decide how to handl

PCI/ASPM: Add pcie_aspm_enabled()

Add a function checking whether or not PCIe ASPM has been enabled for
a given device.

It will be used by the NVMe driver to decide how to handle the
device during system suspend.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI: let pci_disable_link_state propagate errors

Drivers may rely on pci_disable_link_state() having disabled certain
ASPM link states. If OS can't control ASPM then pci_disable_link_sta

PCI: let pci_disable_link_state propagate errors

Drivers may rely on pci_disable_link_state() having disabled certain
ASPM link states. If OS can't control ASPM then pci_disable_link_state()
turns into a no-op w/o informing the caller. The driver therefore may
falsely assume the respective ASPM link states are disabled.
Let pci_disable_link_state() propagate errors to the caller, enabling
the caller to react accordingly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

show more ...

PCI: Rework pcie_retrain_link() wait loop

Transform wait code to a "do {} while (time_before())" loop as recommended
by reviewer. No functional change intended.

Signed-off-by:

PCI: Rework pcie_retrain_link() wait loop

Transform wait code to a "do {} while (time_before())" loop as recommended
by reviewer. No functional change intended.

Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

show more ...

PCI: Work around Pericom PCIe-to-PCI bridge Retrain Link erratum

Due to an erratum in some Pericom PCIe-to-PCI bridges in reverse mode
(conventional PCI on primary side, PCIe on downstre

PCI: Work around Pericom PCIe-to-PCI bridge Retrain Link erratum

Due to an erratum in some Pericom PCIe-to-PCI bridges in reverse mode
(conventional PCI on primary side, PCIe on downstream side), the Retrain
Link bit needs to be cleared manually to allow the link training to
complete successfully.

If it is not cleared manually, the link training is continuously restarted
and no devices below the PCI-to-PCIe bridge can be accessed. That means
drivers for devices below the bridge will be loaded but won't work and may
even crash because the driver is only reading 0xffff.

See the Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf for
details. Devices known as affected so far are: PI7C9X110, PI7C9X111SL,
PI7C9X130.

Add a new flag, clear_retrain_link, in struct pci_dev. Quirks for affected
devices set this bit.

Note that pcie_retrain_link() lives in aspm.c because that's currently the
only place we use it, but this erratum is not specific to ASPM, and we may
retrain links for other reasons in the future.

Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
[bhelgaas: apply regardless of CONFIG_PCIEASPM]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC: stable@vger.kernel.org

show more ...

PCI: Factor out pcie_retrain_link() function

Factor out pcie_retrain_link() to use for Pericom Retrain Link quirk. No
functional change intended.

Signed-off-by: Stefan Mätje <s

PCI: Factor out pcie_retrain_link() function

Factor out pcie_retrain_link() to use for Pericom Retrain Link quirk. No
functional change intended.

Signed-off-by: Stefan Mätje <stefan.maetje@esd.eu>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
CC: stable@vger.kernel.org

show more ...

Merge tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

- Remove unused lists from ASPM pcie_link_state (Fre

Merge tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

- Remove unused lists from ASPM pcie_link_state (Frederick Lawler)

- Fix Broadcom CNB20LE host bridge unintended sign extension (Colin Ian
King)

- Expand Kconfig "PF" acronyms (Randy Dunlap)

- Update MAINTAINERS for arch/x86/kernel/early-quirks.c (Bjorn Helgaas)

- Add missing include to drivers/pci.h (Alexandru Gagniuc)

- Override Synopsys USB 3.x HAPS device class so dwc3-haps can claim it
instead of xhci (Thinh Nguyen)

- Clean up P2PDMA documentation (Randy Dunlap)

- Allow runtime PM even if driver doesn't supply callbacks (Jarkko
Nikula)

- Remove status check after submitting Switchtec MRPC Firmware Download
commands to avoid Completion Timeouts (Kelvin Cao)

- Set Switchtec coherent DMA mask to allow 64-bit DMA (Boris Glimcher)

- Fix Switchtec SWITCHTEC_IOCTL_EVENT_IDX_ALL flag overwrite issue
(Joey Zhang)

- Enable write combining for Switchtec MRPC Input buffers (Kelvin Cao)

- Add Switchtec MRPC DMA mode support (Wesley Sheng)

- Skip VF scanning on powerpc, which does this in firmware (Sebastian
Ott)

- Add Amlogic Meson PCIe controller driver and DT bindings (Yue Wang)

- Constify histb dw_pcie_host_ops structure (Julia Lawall)

- Support multiple power domains for imx6 (Leonard Crestez)

- Constify layerscape driver data (Stefan Agner)

- Update imx6 Kconfig to allow imx6 PCIe in imx7 kernel (Trent Piepho)

- Support armada8k GPIO reset (Baruch Siach)

- Support suspend/resume support on imx6 (Leonard Crestez)

- Don't hard-code DesignWare DBI/ATU offst (Stephen Warren)

- Skip i.MX6 PHY setup on i.MX7D (Andrey Smirnov)

- Remove Jianguo Sun from HiSilicon STB maintainers (Lorenzo Pieralisi)

- Mask DesignWare interrupts instead of disabling them to avoid lost
interrupts (Marc Zyngier)

- Add locking when acking DesignWare interrupts (Marc Zyngier)

- Ack DesignWare interrupts in the proper callbacks (Marc Zyngier)

- Use devm resource parser in mediatek (Honghui Zhang)

- Remove unused mediatek "num-lanes" DT property (Honghui Zhang)

- Add UniPhier PCIe controller driver and DT bindings (Kunihiko
Hayashi)

- Enable MSI for imx6 downstream components (Richard Zhu)

* tag 'pci-v4.21-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (40 commits)
PCI: imx: Enable MSI from downstream components
s390/pci: skip VF scanning
PCI/IOV: Add flag so platforms can skip VF scanning
PCI/IOV: Factor out sriov_add_vfs()
PCI: uniphier: Add UniPhier PCIe host controller support
dt-bindings: PCI: Add UniPhier PCIe host controller description
PCI: amlogic: Add the Amlogic Meson PCIe controller driver
dt-bindings: PCI: meson: add DT bindings for Amlogic Meson PCIe controller
arm64: dts: mt7622: Remove un-used property for PCIe
arm: dts: mt7623: Remove un-used property for PCIe
dt-bindings: PCI: MediaTek: Remove un-used property
PCI: mediatek: Remove un-used variant in struct mtk_pcie_port
MAINTAINERS: Remove Jianguo Sun from HiSilicon STB DWC entry
PCI: dwc: Don't hard-code DBI/ATU offset
PCI: imx: Add imx6sx suspend/resume support
PCI: armada8k: Add support for gpio controlled reset signal
PCI: dwc: Adjust Kconfig to allow IMX6 PCIe host on IMX7
PCI: dwc: layerscape: Constify driver data
PCI: imx: Add multi-pd support
PCI: Override Synopsys USB 3.x HAPS device class
...

show more ...

PCI/ASPM: Remove unused lists from struct pcie_link_state

ASPM does not make use of the children or link LIST_HEADs declared in
struct pcie_link_state and defined in alloc_pcie_link_stat

PCI/ASPM: Remove unused lists from struct pcie_link_state

ASPM does not make use of the children or link LIST_HEADs declared in
struct pcie_link_state and defined in alloc_pcie_link_state(). Therefore,
remove these lists.

No functional change intended.

Signed-off-by: Frederick Lawler <fred@fredlawl.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

Revert "PCI/ASPM: Do not initialize link state when aspm_disabled is set"

This reverts commit 17c91487364fb33797ed84022564ee7544ac4945.

Rafael found that this commit broke the SD ca

Revert "PCI/ASPM: Do not initialize link state when aspm_disabled is set"

This reverts commit 17c91487364fb33797ed84022564ee7544ac4945.

Rafael found that this commit broke the SD card reader in his
Acer Aspire S5. Details of the problem are in the bugzilla below.

Fixes: 17c91487364f ("PCI/ASPM: Do not initialize link state when aspm_disabled is set")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201801
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Do not initialize link state when aspm_disabled is set

Now that ASPM is configured for *all* PCIe devices at boot, a problem is
seen with systems that set the FADT NO_ASPM bit.

PCI/ASPM: Do not initialize link state when aspm_disabled is set

Now that ASPM is configured for *all* PCIe devices at boot, a problem is
seen with systems that set the FADT NO_ASPM bit. This bit indicates that
the OS should not alter the ASPM state, but when
pcie_aspm_init_link_state() runs it only checks for !aspm_support_enabled.
This misses the ACPI_FADT_NO_ASPM case because that is setting
aspm_disabled.

The result is systems may hang at boot after 1302fcf; avoidable if they
boot with pcie_aspm=off (sets !aspm_support_enabled).

Fix this by having aspm_init_link_state() check for either
!aspm_support_enabled or acpm_disabled.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=201001
Fixes: 1302fcf0d03e ("PCI: Configure *all* devices, not just hot-added ones")
Signed-off-by: Patrick Talbert <ptalbert@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Fix link_state teardown on device removal

Upon removal of the last device on a bus, the link_state of the bridge
leading to that bus is sought to be torn down by having pci_sto

PCI/ASPM: Fix link_state teardown on device removal

Upon removal of the last device on a bus, the link_state of the bridge
leading to that bus is sought to be torn down by having pci_stop_dev()
call pcie_aspm_exit_link_state().

When ASPM was originally introduced by commit 7d715a6c1ae5 ("PCI: add
PCI Express ASPM support"), it determined whether the device being
removed is the last one by calling list_empty() on the bridge's
subordinate devices list. That didn't work because the device is only
removed from the list slightly later in pci_destroy_dev().

Commit 3419c75e15f8 ("PCI: properly clean up ASPM link state on device
remove") attempted to fix it by calling list_is_last(), but that's not
correct either because it checks whether the device is at the *end* of
the list, not whether it's the last one *left* in the list. If the user
removes the device which happens to be at the end of the list via sysfs
but other devices are preceding the device in the list, the link_state
is torn down prematurely.

The real fix is to move the invocation of pcie_aspm_exit_link_state() to
pci_destroy_dev() and reinstate the call to list_empty(). Remove a
duplicate check for dev->bus->self because pcie_aspm_exit_link_state()
already contains an identical check.

Fixes: 7d715a6c1ae5 ("PCI: add PCI Express ASPM support")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Shaohua Li <shaohua.li@intel.com>
Cc: stable@vger.kernel.org # v2.6.26

show more ...

PCI/ASPM: Convert to use sysfs_match_string() helper

The sysfs_match_string() helper returns index of the matching string in an
array. Use it in pcie_aspm_set_policy() to simplify the c

PCI/ASPM: Convert to use sysfs_match_string() helper

The sysfs_match_string() helper returns index of the matching string in an
array. Use it in pcie_aspm_set_policy() to simplify the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
[bhelgaas: squash sysfs_match_string() fix into original patch for issue
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Disable ASPM L1.2 Substate if we don't have LTR

When in the ASPM L1.0 state (but not the PCI-PM L1.0 state), the most
recent LTR value and the LTR_L1.2_THRESHOLD determines whe

PCI/ASPM: Disable ASPM L1.2 Substate if we don't have LTR

When in the ASPM L1.0 state (but not the PCI-PM L1.0 state), the most
recent LTR value and the LTR_L1.2_THRESHOLD determines whether the link
enters the L1.2 substate.

If we don't have LTR enabled, prevent the use of ASPM L1.2.

PCI-PM L1.2 may still be used because it doesn't depend on
LTR_L1.2_THRESHOLD (see PCIe r4.0, sec 5.5.1).

Tested-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

show more ...

Merge branch 'pci/misc'

- use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

- remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
(S

Merge branch 'pci/misc'

- use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

- remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
(Shawn Lin)

- report quirk timings with dev_info (Bjorn Helgaas)

- report quirks that take longer than 10ms (Bjorn Helgaas)

- add and use Altera Vendor ID (Johannes Thumshirn)

- tidy Makefiles and comments (Bjorn Helgaas)

* pci/misc:
PCI: Always define the of_node helpers
PCI: Tidy comments
PCI: Tidy Makefiles
mcb: Add Altera PCI ID to mcb-pci
PCI: Add Altera vendor ID
PCI: Report quirks that take more than 10ms
PCI: Report quirk timings with pci_info() instead of pr_debug()
PCI: Fix NULL pointer dereference in of_pci_bus_find_domain_nr()
rapidio/tsi721: use PCI_EXP_DEVCTL2_COMP_TIMEOUT macro

show more ...

PCI: Tidy comments

Remove pointless comments that tell us the file name, remove blank line
comments, follow multi-line comment conventions. No functional change
intended.

S

PCI: Tidy comments

Remove pointless comments that tell us the file name, remove blank line
comments, follow multi-line comment conventions. No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Don't warn if already in common clock mode

Previously we emitted a warning if we tried to configure common clock mode
the link was already configured to common clock mode by th

PCI/ASPM: Don't warn if already in common clock mode

Previously we emitted a warning if we tried to configure common clock mode
the link was already configured to common clock mode by the UEFI BIOS.
Bail out silently in that case instead of emitting the warning:

pci 0004:00:00.0: ASPM: Could not configure common clock

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>

show more ...

PCI/ASPM: Declare threshold_ns as u32, not u64

aspm_calc_l1ss_info() computes l1_2_threshold in microseconds as:

l1_2_threshold = 2 + 4 + t_common_mode + t_power_on;

wher

PCI/ASPM: Declare threshold_ns as u32, not u64

aspm_calc_l1ss_info() computes l1_2_threshold in microseconds as:

l1_2_threshold = 2 + 4 + t_common_mode + t_power_on;

where t_common_mode is at most 255us:

PCI_L1SS_CAP_CM_RESTORE_TIME 0x0000ff00 <-- 8 bits; <256us

and t_power_on is at most 31 * 100us = 3100us:

PCI_L1SS_CAP_P_PWR_ON_VALUE 0x00f80000 <-- 5 bits; <32
PCI_L1SS_CAP_P_PWR_ON_SCALE 0x00030000 <-- *2us, *10us, or *100us

So l1_2_threshold is at most 2 + 4 + 255 + 3100 = 3361, which means
threshold_ns is at most 3361 * 1000 = 3361000, which easily fits in a
u32.

Declare threshold_ns as u32, not u64. This fixes a Coverity warning.

Addresses-Coverity-ID: 1462501
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
[bhelgaas: changelog]
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>

show more ...

Merge branch 'pci/misc' into next

* pci/misc:
PCI: Add dummy pci_irqd_intx_xlate() for CONFIG_PCI=n build
PCI: Add wrappers for dev_printk()
PCI: Remove unnecessary message

Merge branch 'pci/misc' into next

* pci/misc:
PCI: Add dummy pci_irqd_intx_xlate() for CONFIG_PCI=n build
PCI: Add wrappers for dev_printk()
PCI: Remove unnecessary messages for memory allocation failures
PCI: Add #defines for Completion Timeout Disable feature
hinic: Replace PCI pool old API
net: e100: Replace PCI pool old API
block: DAC960: Replace PCI pool old API
MAINTAINERS: Include more PCI files
PCI: Remove unneeded kallsyms include
powerpc/pci: Unroll two pass loop when scanning bridges
powerpc/pci: Use for_each_pci_bridge() helper

show more ...

PCI: Add wrappers for dev_printk()

Add PCI-specific dev_printk() wrappers and use them to simplify the code
slightly. No functional change intended.

Signed-off-by: Frederick La

PCI: Add wrappers for dev_printk()

Add PCI-specific dev_printk() wrappers and use them to simplify the code
slightly. No functional change intended.

Signed-off-by: Frederick Lawler <fred@fredlawl.com>
[bhelgaas: squash into one patch]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

show more ...

PCI/ASPM: Calculate LTR_L1.2_THRESHOLD from device characteristics

Per PCIe r3.1, sec 5.5.1, LTR_L1.2_THRESHOLD determines whether we enter
the L1.2 Link state: if L1.2 is enabled and do

PCI/ASPM: Calculate LTR_L1.2_THRESHOLD from device characteristics

Per PCIe r3.1, sec 5.5.1, LTR_L1.2_THRESHOLD determines whether we enter
the L1.2 Link state: if L1.2 is enabled and downstream devices have
reported that they can tolerate latency of at least LTR_L1.2_THRESHOLD, we
must enter L1.2 when CLKREQ# is de-asserted.

The implication is that LTR_L1.2_THRESHOLD is the time required to
transition the Link from L0 to L1.2 and back to L0, and per sec 5.5.3.3.1,
Figures 5-16 and 5-17, it appears that the absolute minimum time for those
transitions would be T(POWER_OFF) + T(L1.2) + T(POWER_ON) + T(COMMONMODE).

Therefore, compute LTR_L1.2_THRESHOLD as:

2us T(POWER_OFF)
+ 4us T(L1.2)
+ T(POWER_ON)
+ T(COMMONMODE)
= LTR_L1.2_THRESHOLD

Previously we set LTR_L1.2_THRESHOLD to a fixed value of 163840ns
(163.84us):

#define LTR_L1_2_THRESHOLD_BITS ((1 << 21) | (1 << 23) | (1 << 30))
((1 << 21) | (1 << 23) | (1 << 30)) = 0x40a00000
LTR_L1.2_THRESHOLD_Value = (0x40a00000 & 0x03ff0000) >> 16 = 0xa0 = 160
LTR_L1.2_THRESHOLD_Scale = (0x40a00000 & 0xe0000000) >> 29 = 0x2 (* 1024ns)
LTR_L1.2_THRESHOLD = 160 * 1024ns = 163840ns

Obviously this doesn't account for the circuit characteristics of different
implementations.

Note that while firmware may enable LTR, Linux itself currently does not
enable LTR. When L1.2 is enabled but LTR is not, LTR_L1.2_THRESHOLD is
ignored and we always enter L1.2 when it is enabled and CLKREQ# is
de-asserted. So this patch should not have any effect unless firmware
enables LTR.

Fixes: f1f0366dd6be ("PCI/ASPM: Calculate and save the L1.2 timing parameters")
Link: https://www.coreboot.org/pipermail/coreboot-gerrit/2015-March/021134.html
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>
Cc: Kenji Chen <kenji.chen@intel.com>
Cc: Patrick Georgi <pgeorgi@google.com>
Cc: Rajat Jain <rajatja@google.com>

show more ...

Merge tag 'pci-v4.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

- detach driver before tearing down procfs/sysfs (A

Merge tag 'pci-v4.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

- detach driver before tearing down procfs/sysfs (Alex Williamson)

- disable PCIe services during shutdown (Sinan Kaya)

- fix ASPM oops on systems with no Root Ports (Ard Biesheuvel)

- fix ASPM LTR_L1.2_THRESHOLD programming (Bjorn Helgaas)

- fix ASPM Common_Mode_Restore_Time computation (Bjorn Helgaas)

- fix portdrv MSI/MSI-X vector allocation (Dongdong Liu, Bjorn
Helgaas)

- report non-fatal AER errors only to the affected endpoint (Gabriele
Paoloni)

- distribute bus numbers, MMIO, and I/O space among hotplug bridges to
allow more devices to be hot-added (Mika Westerberg)

- fix pciehp races during initialization and surprise link down (Mika
Westerberg)

- handle surprise-removed devices in PME handling (Qiang)

- support resizable BARs for large graphics devices (Christian König)

- expose SR-IOV offset, stride, and VF device ID via sysfs (Filippo
Sironi)

- create SR-IOV virtfn/physfn sysfs links before attaching driver
(Stuart Hayes)

- fix SR-IOV "ARI Capable Hierarchy" restore issue (Tony Nguyen)

- enforce Kconfig IOV/REALLOC dependency (Sascha El-Sharkawy)

- avoid slot reset if bridge itself is broken (Jan Glauber)

- clean up pci_reset_function() path (Jan H. Schönherr)

- make pci_map_rom() fail if the option ROM is invalid (Changbin Du)

- convert timers to timer_setup() (Kees Cook)

- move PCI_QUIRKS to PCI bus Kconfig menu (Randy Dunlap)

- constify pci_dev_type and intel_mid_pci_ops (Bhumika Goyal)

- remove unnecessary pci_dev, pci_bus, resource, pcibios_set_master()
declarations (Bjorn Helgaas)

- fix endpoint framework overflows and BUG()s (Dan Carpenter)

- fix endpoint framework issues (Kishon Vijay Abraham I)

- avoid broken Cavium CN8xxx bus reset behavior (David Daney)

- extend Cavium ACS capability quirks (Vadim Lomovtsev)

- support Synopsys DesignWare RC in ECAM mode (Ard Biesheuvel)

- turn off dra7xx clocks cleanly on shutdown (Keerthy)

- fix Faraday probe error path (Wei Yongjun)

- support HiSilicon STB SoC PCIe host controller (Jianguo Sun)

- fix Hyper-V interrupt affinity issue (Dexuan Cui)

- remove useless ACPI warning for Hyper-V pass-through devices (Vitaly
Kuznetsov)

- support multiple MSI on iProc (Sandor Bodo-Merle)

- support Layerscape LS1012a and LS1046a PCIe host controllers (Hou
Zhiqiang)

- fix Layerscape default error response (Minghuan Lian)

- support MSI on Tango host controller (Marc Gonzalez)

- support Tegra186 PCIe host controller (Manikanta Maddireddy)

- use generic accessors on Tegra when possible (Thierry Reding)

- support V3 Semiconductor PCI host controller (Linus Walleij)

* tag 'pci-v4.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (85 commits)
PCI/ASPM: Add L1 Substates definitions
PCI/ASPM: Reformat ASPM register definitions
PCI/ASPM: Use correct capability pointer to program LTR_L1.2_THRESHOLD
PCI/ASPM: Account for downstream device's Port Common_Mode_Restore_Time
PCI: xgene: Rename xgene_pcie_probe_bridge() to xgene_pcie_probe()
PCI: xilinx: Rename xilinx_pcie_link_is_up() to xilinx_pcie_link_up()
PCI: altera: Rename altera_pcie_link_is_up() to altera_pcie_link_up()
PCI: Fix kernel-doc build warning
PCI: Fail pci_map_rom() if the option ROM is invalid
PCI: Move pci_map_rom() error path
PCI: Move PCI_QUIRKS to the PCI bus menu
alpha/PCI: Make pdev_save_srm_config() static
PCI: Remove unused declarations
PCI: Remove redundant pci_dev, pci_bus, resource declarations
PCI: Remove redundant pcibios_set_master() declarations
PCI/PME: Handle invalid data when reading Root Status
PCI: hv: Use effective affinity mask
PCI: pciehp: Do not clear Presence Detect Changed during initialization
PCI: pciehp: Fix race condition handling surprise link down
PCI: Distribute available resources to hotplug-capable bridges
...

show more ...

Merge tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
"Summary of modules changes for the 4.15 merge window:

Merge tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
"Summary of modules changes for the 4.15 merge window:

- treewide module_param_call() cleanup, fix up set/get function
prototype mismatches, from Kees Cook

- minor code cleanups"

* tag 'modules-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: Do not paper over type mismatches in module_param_call()
treewide: Fix function prototypes for module_param_call()
module: Prepare to convert all module_param_call() prototypes
kernel/module: Delete an error message for a failed memory allocation in add_module_usage()

show more ...

PCI/ASPM: Add L1 Substates definitions

Add and use #defines for L1 Substate register fields instead of hard-coding
the masks. Also update comments to use names from the spec. No functi

PCI/ASPM: Add L1 Substates definitions

Add and use #defines for L1 Substate register fields instead of hard-coding
the masks. Also update comments to use names from the spec. No functional
change intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Vidya Sagar <vidyas@nvidia.com>

show more ...