Age | Commit message (Collapse) | Author | Files | Lines |
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- Fix VMD config addressing to ignore starting bus offset (Jon Derrick)
- Fix VMD shadow offset scratchpad address (Jon Derrick)
* remotes/lorenzo/pci/vmd:
PCI: vmd: Fix shadow offsets to reflect spec changes
PCI: vmd: Fix config addressing when using bus offsets
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- Fix Tegra OF node reference leak (Nishka Dasgupta)
- Add #defines for PCIe Data Link Feature and Physical Layer 16.0 GT/s
features (Vidya Sagar)
- Disable MSI for Tegra Root Ports since they don't support using MSI for
all Root Port events (Vidya Sagar)
- Group DesignWare write-protected register writes together (Vidya Sagar)
- Move DesignWare capability search interfaces so they can be used by
both host and endpoint drivers (Vidya Sagar)
- Add DesignWare extended capability search interfaces (Vidya Sagar)
- Export dw_pcie_wait_for_link() so drivers can be modules (Vidya Sagar)
- Add "snps,enable-cdm-check" DT binding for Configuration Dependent
Module (CDM) register checking (Vidya Sagar)
- Add DesignWare support for "snps,enable-cdm-check" CDM checking (Vidya
Sagar)
- Add "supports-clkreq" DT binding for host drivers to decide whether to
advertise low power features (Vidya Sagar)
- Add DT binding for Tegra194 (Vidya Sagar)
- Add DT binding for Tegra194 P2U (PIPE to UPHY) block (Vidya Sagar)
- Add support for Tegra194 P2U (PIPE to UPHY) (Vidya Sagar)
- Add support for Tegra194 host controller (Vidya Sagar)
- Add Tegra support for sideband PERST# and CLKREQ# for C5 (Vidya Sagar)
- Add Tegra support for slot regulators for p2972-0000 platform (Vidya
Sagar)
* lorenzo/pci/tegra:
arm64: tegra: Add PCIe slot supply information in p2972-0000 platform
arm64: tegra: Add configuration for PCIe C5 sideband signals
PCI: tegra: Add support to enable slot regulators
PCI: tegra: Add support to configure sideband pins
dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries
dt-bindings: PCI: tegra: Add sideband pins configuration entries
PCI: tegra: Add Tegra194 PCIe support
phy: tegra: Add PCIe PIPE2UPHY support
dt-bindings: PHY: P2U: Add Tegra194 P2U block
dt-bindings: PCI: tegra: Add device tree support for Tegra194
dt-bindings: Add PCIe supports-clkreq property
PCI: dwc: Add support to enable CDM register check
dt-bindings: PCI: designware: Add binding for CDM register check
PCI: dwc: Export dw_pcie_wait_for_link() API
PCI: dwc: Add extended configuration space capability search API
PCI: dwc: Move config space capability search API
PCI: dwc: Group DBI registers writes requiring unlocking
PCI: Disable MSI for Tegra root ports
PCI: Add #defines for some of PCIe spec r4.0 features
PCI: tegra: Fix OF node reference leak
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- Fix mobiveil inbound window CPU base address setup (Hou Zhiqiang)
* remotes/lorenzo/pci/mobiveil:
PCI: mobiveil: Fix the CPU base address setup in inbound window
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- Propagate regulator_get_optional() errors so callers can distinguish
real errors from optional regulators that are absent (Thierry Reding)
- Propagate devm_of_phy_get() errors so callers can distinguish
real errors from optional PHYs that are absent (Thierry Reding)
- Add Andrew Murray as PCI native driver reviewer (Lorenzo Pieralisi)
* remotes/lorenzo/pci/misc:
MAINTAINERS: Add PCI native host/endpoint controllers designated reviewer
PCI: iproc: Propagate errors for optional PHYs
PCI: histb: Propagate errors for optional regulators
PCI: armada8x: Propagate errors for optional PHYs
PCI: imx6: Propagate errors for optional regulators
PCI: exynos: Propagate errors for optional PHYs
PCI: rockchip: Propagate errors for optional regulators
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- Add mediatek support for MT7629 (Jianjun Wang)
* remotes/lorenzo/pci/mediatek:
PCI: mediatek: Add controller support for MT7629
dt-bindings: PCI: Add support for MT7629
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- Mark Layerscape endpoint BARs 2 and 4 as 64-bit (Xiaowei Bao)
- Add CONFIG_PCI_LAYERSCAPE_EP so EP/RC can be built separately (Xiaowei
Bao)
* remotes/lorenzo/pci/layerscape:
PCI: layerscape: Add CONFIG_PCI_LAYERSCAPE_EP to build EP/RC separately
PCI: layerscape: Add the bar_fixed_64bit property to the endpoint driver
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- Reduce i.MX 6Quad DBI register length to avoid aborts from accessing
invalid registers (Stefan Agner)
* remotes/lorenzo/pci/imx:
PCI: imx6: Limit DBI register length
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- Fix Hyper-V use-after-free in pci_dev removal (Dexuan Cui)
- Fix Hyper-V build error in non-sysfs config (Randy Dunlap)
- Reallocate to avoid Hyper-V domain number collisions (Haiyang Zhang)
- Use Hyper-V instance ID bytes 4-5 to reduce domain collisions (Haiyang
Zhang)
* remotes/lorenzo/pci/hv:
PCI: hv: Use bytes 4 and 5 from instance ID as the PCI domain numbers
PCI: hv: Detect and fix Hyper-V PCI domain number collision
PCI: pci-hyperv: Fix build errors on non-SYSFS config
PCI: hv: Avoid use of hv_pci_dev->pci_slot after freeing it
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- Make kirin_dw_pcie_ops constant (Nishka Dasgupta)
- Make DesignWare "num-lanes" property optional and remove from relevant
DTs (Hou Zhiqiang)
* remotes/lorenzo/pci/dwc:
arm64: dts: fsl: Remove num-lanes property from PCIe nodes
ARM: dts: ls1021a: Remove num-lanes property from PCIe nodes
PCI: dwc: Return directly when num-lanes is not found
dt-bindings: PCI: designware: Remove the num-lanes from Required properties
PCI: kirin: Make structure kirin_dw_pcie_ops constant
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- Add driver for Amazon Annapurna Labs PCIe controller (Jonathan Chocron)
- Disable MSI-X since Annapurna Labs advertises it, but it's broken
(Jonathan Chocron)
- Disable VPD since Annapurna Labs advertises it, but it's broken
(Jonathan Chocron)
- Add ACS quirk since Annapurna Labs doesn't support ACS but does provide
some equivalent protections (Ali Saidi)
* remotes/lorenzo/pci/al:
PCI: dwc: Add validation that PCIe core is set to correct mode
PCI: dwc: al: Add Amazon Annapurna Labs PCIe controller driver
dt-bindings: PCI: Add Amazon's Annapurna Labs PCIe host bridge binding
PCI: Add quirk to disable MSI-X support for Amazon's Annapurna Labs Root Port
PCI/VPD: Prevent VPD access for Amazon's Annapurna Labs Root Port
PCI: Add ACS quirk for Amazon Annapurna Labs root ports
PCI: Add Amazon's Annapurna Labs vendor ID
# Conflicts:
# drivers/pci/quirks.c
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- Convert pci_resource_to_user() to a weak function to remove
HAVE_ARCH_PCI_RESOURCE_TO_USER #defines (Denis Efremov)
- Use PCI_SRIOV_NUM_BARS for idiomatic loop structure (Denis Efremov)
- Fix Resizable BAR size suspend/restore for 1MB BARs (Sumit Saxena)
- Correct "pci=resource_alignment" example in documentation (Alexey
Kardashevskiy)
* pci/resource:
PCI: Correct pci=resource_alignment parameter example
PCI: Restore Resizable BAR size bits correctly for 1MB BARs
PCI: Use PCI_SRIOV_NUM_BARS in loops instead of PCI_IOV_RESOURCE_END
PCI: Convert pci_resource_to_user() to a weak function
# Conflicts:
# drivers/pci/pci.c
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- Cleanup pciehp LED/indicator control with a new consolidated
pciehp_set_indicators() interface that controls both Attention and
Power Indicators (Denis Efremov)
* pci/pciehp:
PCI: pciehp: Refer to "Indicators" instead of "LEDs" in comments
PCI: pciehp: Remove pciehp_green_led_{on,off,blink}()
PCI: pciehp: Remove pciehp_set_attention_status()
PCI: pciehp: Combine adjacent indicator updates
PCI: pciehp: Add pciehp_set_indicators() to set both indicators
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- Move P2PCMA PCI bus offset from generic dev_pagemap to
pci_p2pdma_pagemap (Logan Gunthorpe)
- Add provider's pci_dev to pci_p2pdma_pagemap (Logan Gunthorpe)
- Apply host bridge whitelist for ACS (Logan Gunthorpe)
- Whitelist some Intel host bridges for P2PDMA (Logan Gunthorpe)
- Add attrs to pci_p2pdma_map_sg() to match dma_map_sg() (Logan
Gunthorpe)
- Add pci_p2pdma_unmap_sg() (Logan Gunthorpe)
- Store P2PDMA mapping method in xarray (Logan Gunthorpe)
- Map requests that traverse a host bridge (Logan Gunthorpe)
- Allow IOMMU for host bridge whitelist (Logan Gunthorpe)
* pci/p2pdma:
PCI/P2PDMA: Update pci_p2pdma_distance_many() documentation
PCI/P2PDMA: Allow IOMMU for host bridge whitelist
PCI/P2PDMA: dma_map() requests that traverse the host bridge
PCI/P2PDMA: Store mapping method in an xarray
PCI/P2PDMA: Factor out __pci_p2pdma_map_sg()
PCI/P2PDMA: Introduce pci_p2pdma_unmap_sg()
PCI/P2PDMA: Add attrs argument to pci_p2pdma_map_sg()
PCI/P2PDMA: Whitelist some Intel host bridges
PCI/P2PDMA: Factor out host_bridge_whitelist()
PCI/P2PDMA: Apply host bridge whitelist for ACS
PCI/P2PDMA: Factor out __upstream_bridge_distance()
PCI/P2PDMA: Add constants for map type results to upstream_bridge_distance()
PCI/P2PDMA: Add provider's pci_dev to pci_p2pdma_pagemap struct
PCI/P2PDMA: Introduce private pagemap structure
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- Enable PCI_MSI_IRQ_DOMAIN support for RISC-V (Wesley Terpstra)
* pci/msi:
PCI/MSI: Enable PCI_MSI_IRQ_DOMAIN support for RISC-V
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- Use devm_add_action_or_reset() helper (Fuqian Huang)
- Mark expected switch fall-through (Gustavo A. R. Silva)
- Convert sysfs device attributes from __ATTR() to DEVICE_ATTR() (Kelsey
Skunberg)
- Convert sysfs file permissions from S_IRUSR etc to octal (Kelsey
Skunberg)
- Move SR-IOV sysfs functions to iov.c (Kelsey Skunberg)
- Add pci_info_ratelimited() to ratelimit PCI messages separately
(Krzysztof Wilczynski)
- Fix "'static' not at beginning of declaration" warnings (Krzysztof
Wilczynski)
- Clean up resource_alignment parameter to not require static buffer
(Logan Gunthorpe)
- Add ACS quirk for iProc PAXB (Abhinav Ratna)
- Add pci_irq_vector() and other stubs for !CONFIG_PCI (Herbert Xu)
* pci/misc:
PCI: Add pci_irq_vector() and other stubs when !CONFIG_PCI
PCI: Add ACS quirk for iProc PAXB
PCI: Force trailing new line to resource_alignment_param in sysfs
PCI: Move pci_[get|set]_resource_alignment_param() into their callers
PCI: Clean up resource_alignment parameter to not require static buffer
PCI: Use static const struct, not const static struct
PCI: Add pci_info_ratelimited() to ratelimit PCI separately
PCI/IOV: Remove group write permission from sriov_numvfs, sriov_drivers_autoprobe
PCI/IOV: Move sysfs SR-IOV functions to iov.c
PCI: sysfs: Change permissions from symbolic to octal
PCI: sysfs: Change DEVICE_ATTR() to DEVICE_ATTR_WO()
PCI: sysfs: Define device attributes with DEVICE_ATTR*()
PCI: Mark expected switch fall-through
PCI: Use devm_add_action_or_reset()
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- 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_*
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- Move many symbols from public linux/pci.h to subsystem-private
drivers/pci/pci.h (Kelsey Skunberg)
- Unexport pci_bus_get() and pci_bus_sem since they're not needed by
modules (Kelsey Skunberg)
- Remove unused pci_block_cfg_access() et al (Kelsey Skunberg)
* pci/encapsulate:
PCI: Make pci_set_of_node(), etc private
PCI: Make pci_enable_ptm() private
PCI: Make pcie_set_ecrc_checking(), pcie_ecrc_get_policy() private
PCI: Make pci_ats_init() private
PCI: Make pcie_update_link_speed() private
PCI: Make pci_bus_get(), pci_bus_put() private
PCI: Make pci_hotplug_io_size, mem_size, and bus_size private
PCI: Make pci_save_vc_state(), pci_restore_vc_state(), etc private
PCI: Make pci_get_host_bridge_device(), pci_put_host_bridge_device() private
PCI: Make pci_check_pme_status(), pci_pme_wakeup_bus() private
PCI: Make PCI_PM_* delay times private
PCI: Unexport pci_bus_sem
PCI: Unexport pci_bus_get() and pci_bus_put()
PCI: Remove pci_block_cfg_access() et al (unused)
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Add support to get regulator information of 3.3V and 12V supplies of a PCIe
slot from the respective controller's device-tree node and enable those
supplies. This is required in platforms like p2972-0000 where the supplies
to x16 slot owned by C5 controller need to be enabled before attempting to
enumerate the devices.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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Add support to configure sideband signal pins when the information is
present in the respective controller device-tree node.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[bhelgaas: fold in YueHaibing's fix for build error without CONFIG_PINCTRL;
https://lore.kernel.org/r/20190920014807.38288-1-yuehaibing@huawei.com]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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The shadow offset scratchpad was moved to 0x2000-0x2010. Update the
location to get the correct shadow offset.
Fixes: 6788958e4f3c ("PCI: vmd: Assign membar addresses from shadow registers")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org # v5.2+
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VMD maps child device config spaces to the VMD Config BAR linearly
regardless of the starting bus offset. Because of this, the config
address decode must ignore starting bus offsets when mapping the BDF to
the config space address.
Fixes: 2a5a9c9a20f9 ("PCI: vmd: Add offset to bus numbers if necessary")
Signed-off-by: Jon Derrick <jonathan.derrick@intel.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org # v5.2+
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Some PCIe controllers can be set to either Host or EP according to some
early boot FW. To make sure there is no discrepancy (e.g. FW configured
the port to EP mode while the DT specifies it as a host bridge or vice
versa), a check has been added for each mode.
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
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This driver is DT based and utilizes the DesignWare APIs.
It allows using a smaller ECAM range for a larger bus range -
usually an entire bus uses 1MB of address space, but the driver
can use it for a larger number of buses. This is achieved by using a HW
mechanism which allows changing the BUS part of the "final" outgoing
config transaction. There are 2 HW regs, one which is basically a
bitmask determining which bits to take from the AXI transaction itself
and another which holds the complementary part programmed by the
driver.
All link initializations are handled by the boot FW.
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
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The Root Port (identified by [1c36:0031]) doesn't support MSI-X. On some
platforms it is configured to not advertise the capability at all, while
on others it (mistakenly) does. This causes a panic during
initialization by the pcieport driver, since it tries to configure the
MSI-X capability. Specifically, when trying to access the MSI-X table
a "non-existing addr" exception occurs.
Example stacktrace snippet:
SError Interrupt on CPU2, code 0xbf000000 -- SError
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.2.0-rc1-Jonny-14847-ge76f1d4a1828-dirty #33
Hardware name: Annapurna Labs Alpine V3 EVP (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO)
pc : __pci_enable_msix_range+0x4e4/0x608
lr : __pci_enable_msix_range+0x498/0x608
sp : ffffff80117db700
x29: ffffff80117db700 x28: 0000000000000001
x27: 0000000000000001 x26: 0000000000000000
x25: ffffffd3e9d8c0b0 x24: 0000000000000000
x23: 0000000000000000 x22: 0000000000000000
x21: 0000000000000001 x20: 0000000000000000
x19: ffffffd3e9d8c000 x18: ffffffffffffffff
x17: 0000000000000000 x16: 0000000000000000
x15: ffffff80116496c8 x14: ffffffd3e9844503
x13: ffffffd3e9844502 x12: 0000000000000038
x11: ffffffffffffff00 x10: 0000000000000040
x9 : ffffff801165e270 x8 : ffffff801165e268
x7 : 0000000000000002 x6 : 00000000000000b2
x5 : ffffffd3e9d8c2c0 x4 : 0000000000000000
x3 : 0000000000000000 x2 : 0000000000000000
x1 : 0000000000000000 x0 : ffffffd3e9844680
Kernel panic - not syncing: Asynchronous SError Interrupt
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.2.0-rc1-Jonny-14847-ge76f1d4a1828-dirty #33
Hardware name: Annapurna Labs Alpine V3 EVP (DT)
Call trace:
dump_backtrace+0x0/0x140
show_stack+0x14/0x20
dump_stack+0xa8/0xcc
panic+0x140/0x334
nmi_panic+0x6c/0x70
arm64_serror_panic+0x74/0x88
__pte_error+0x0/0x28
el1_error+0x84/0xf8
__pci_enable_msix_range+0x4e4/0x608
pci_alloc_irq_vectors_affinity+0xdc/0x150
pcie_port_device_register+0x2b8/0x4e0
pcie_portdrv_probe+0x34/0xf0
Notice that this quirk also disables MSI (which may work, but hasn't
been tested nor has a current use case), since currently there is no
standard way to disable only MSI-X.
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
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The Amazon Annapurna Labs PCIe Root Port exposes the VPD capability,
but there is no actual support for it.
Trying to access the VPD (for example, as part of lspci -vv or when
reading the vpd sysfs file), results in the following warning print:
pcieport 0001:00:00.0: VPD access failed. This is likely a firmware bug on this device. Contact the card vendor for a firmware update
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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The Amazon's Annapurna Labs root ports don't advertise an ACS
capability, but they don't allow peer-to-peer transactions and do
validate bus numbers through the SMMU. Additionally, it's not possible
for one RP to pass traffic to another RP.
Signed-off-by: Ali Saidi <alisaidi@amazon.com>
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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As recommended by Azure host team, the bytes 4, 5 have more uniqueness
(info entropy) than bytes 8, 9 so use them as the PCI domain numbers.
On older hosts, bytes 4, 5 can also be used -- no backward compatibility
issues are introduced and the chance of collision is greatly reduced.
In the rare cases of collision, the driver code detects and finds
another number that is not in use.
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Sasha Levin <sashal@kernel.org>
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Add support for Synopsys DesignWare core IP based PCIe host controller
present in the Tegra194 SoC.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Thierry Reding <treding@nvidia.com>
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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>
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pcie_downstream_port() is useful in other places where code needs to
determine whether the PCIe port is downstream so make it available outside
of access.c.
Link: https://lore.kernel.org/r/20190822085553.62697-1-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>
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iProc PAXB Root Ports don't advertise an ACS capability, but they do not
allow peer-to-peer transactions between Root Ports. Add an ACS quirk so
each Root Port can be in a separate IOMMU group.
[bhelgaas: commit log, comment, use common implementation style]
Link: https://lore.kernel.org/r/1566275985-25670-1-git-send-email-srinath.mannam@broadcom.com
Signed-off-by: Abhinav Ratna <abhinav.ratna@broadcom.com>
Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Scott Branden <scott.branden@broadcom.com>
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When 'pci=resource_alignment=' is specified on the command line, there is
no trailing new line. Then, when it's read through the corresponding sysfs
attribute, there will be no newline and a cat command will not show
correctly in a shell. If the parameter is set through sysfs a new line will
be stored and it will 'cat' correctly.
To solve this, append a new line character in the show function if one does
not already exist.
Link: https://lore.kernel.org/r/20190822161013.5481-4-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Both the functions pci_get_resource_alignment_param() and
pci_set_resource_alignment_param() are now only called in one place:
resource_alignment_show() and resource_alignment_store() respectively.
There is no value in this extra set of functions so move both into their
callers respectively.
[bhelgaas: fold in "GFP_KERNEL while atomic" fix from Christoph Hellwig
<hch@infradead.org>
https://lore.kernel.org/r/20190902075006.GB754@infradead.org]
Link: https://lore.kernel.org/r/20190822161013.5481-3-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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The PCIe spec doesn't mention "green LEDs" or "amber LEDs". Replace those
terms with "Power Indicator" and "Attention Indicator" so the comments
match the spec language. Comment changes only.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Remove pciehp_green_led_{on,off,blink}() and use pciehp_set_indicators()
instead, since the code is mostly the same.
[bhelgaas: drop set_power_indicator() wrapper to reduce the number of
interfaces]
Link: https://lore.kernel.org/r/20190903111021.1559-5-efremov@linux.com
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
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Remove pciehp_set_attention_status() and use pciehp_set_indicators()
instead, since the code is mostly the same.
Link: https://lore.kernel.org/r/20190903111021.1559-4-efremov@linux.com
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
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Combine adjacent updates of power and attention indicators into a single
pciehp_set_indicators() call. This sends one command to the hotplug
controller instead of two.
Link: https://lore.kernel.org/r/20190903111021.1559-3-efremov@linux.com
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
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Add pciehp_set_indicators() to set power and attention indicators with a
single register write.
This is a minor optimization because we frequently set both indicators and
this can do it with a single command. It also reduces the number of
interfaces related to the indicators and makes them more discoverable
because callers use the PCI_EXP_SLTCTL_ATTN_IND_* and
PCI_EXP_SLTCTL_PWR_IND_* definitions directly.
[bhelgaas: extend commit log, s/PCI_EXP_SLTCTL_.*_IND_NONE/INDICATOR_NOOP/
so they don't look like things defined by the spec, add function doc, mask
commands to make it obvious we only send valid commands
(pcie_do_write_cmd() does mask it, but requires more effort to verify)]
Link: https://lore.kernel.org/r/20190903111021.1559-2-efremov@linux.com
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Clean up the 'resource_alignment' parameter code to use kstrdup() in the
initcall routine instead of a static buffer that wastes memory regardless
of whether the feature is used. This allows us to drop 'COMMAND_LINE_SIZE'
bytes (typically 256-4096 depending on architecture) of static data.
This is similar to what has been done for the 'disable_acs_redir'
parameter.
Link: https://lore.kernel.org/r/20190822161013.5481-2-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Move the static keyword to the front of declarations of pci_regs_behavior[]
and pcie_cap_regs_behavior[], which resolves compiler warnings when
building with "W=1":
drivers/pci/pci-bridge-emul.c:41:1: warning: ‘static’ is not at beginning of
declaration [-Wold-style-declaration]
const static struct pci_bridge_reg_behavior pci_regs_behavior[] = {
^
drivers/pci/pci-bridge-emul.c:176:1: warning: ‘static’ is not at beginning of
declaration [-Wold-style-declaration]
const static struct pci_bridge_reg_behavior pcie_cap_regs_behavior[] = {
^
Link: https://lore.kernel.org/r/20190826151436.4672-1-kw@linux.com
Link: https://lore.kernel.org/r/20190828131733.5817-1-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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Do not use printk_ratelimit() in drivers/pci/pci.c as it shares the rate
limiting state with all other callers to the printk_ratelimit().
Add pci_info_ratelimited() (similar to pci_notice_ratelimited() added in
the commit a88a7b3eb076 ("vfio: Use dev_printk() when possible")) and use
it instead of printk_ratelimit() + pci_info().
Link: https://lore.kernel.org/r/20190825224616.8021-1-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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sriov_drivers_autoprobe
Previously the sriov_numvfs and sriov_drivers_autoprobe sysfs files had
0664 permissions, which allowed group write. libvirt runs as root when
dealing with PCI, and it chowns files needed by qemu, so group write
permission should not be needed.
Change these permissions from 0664 to 0644, which is what DEVICE_ATTR_RW()
does by default.
[bhelgaas: commit log]
Link: https://lore.kernel.org/r/20190905063226.43269-1-skunberg.kelsey@gmail.com
Link: https://lore.kernel.org/r/850cf536-0b72-d78c-efaf-855dcb391087@redhat.com
Signed-off-by: Kelsey Skunberg <skunberg.kelsey@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Donald Dutile <ddutile@redhat.com>
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devm_phy_get() can fail for a number of reasons besides probe deferral.
It can for example return -ENOMEM if it runs out of memory as it tries
to allocate devres structures. Propagating only -EPROBE_DEFER is
problematic because it results in these legitimately fatal errors being
treated as "PHY not specified in DT".
What we really want is to ignore the optional PHYs only if they have not
been specified in DT. devm_phy_optional_get() is a function that exactly
does what's required here, so use that instead.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Ray Jui <rjui@broadcom.com>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: bcm-kernel-feedback-list@broadcom.com
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regulator_get_optional() can fail for a number of reasons besides probe
deferral. It can for example return -ENOMEM if it runs out of memory as
it tries to allocate data structures. Propagating only -EPROBE_DEFER is
problematic because it results in these legitimately fatal errors being
treated as "regulator not specified in DT".
What we really want is to ignore the optional regulators only if they
have not been specified in DT. regulator_get_optional() returns -ENODEV
in this case, so that's the special case that we need to handle. So we
propagate all errors, except -ENODEV, so that real failures will still
cause the driver to fail probe.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
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devm_of_phy_get_by_index() can fail for a number of reasons besides
probe deferral. It can for example return -ENOMEM if it runs out of
memory as it tries to allocate devres structures. Propagating only
-EPROBE_DEFER is problematic because it results in these legitimately
fatal errors being treated as "PHY not specified in DT".
What we really want is to ignore the optional PHYs only if they have not
been specified in DT. devm_of_phy_get_by_index() returns -ENODEV in this
case, so that's the special case that we need to handle. So we propagate
all errors, except -ENODEV, so that real failures will still cause the
driver to fail probe.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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regulator_get_optional() can fail for a number of reasons besides probe
deferral. It can for example return -ENOMEM if it runs out of memory as
it tries to allocate data structures. Propagating only -EPROBE_DEFER is
problematic because it results in these legitimately fatal errors being
treated as "regulator not specified in DT".
What we really want is to ignore the optional regulators only if they
have not been specified in DT. regulator_get_optional() returns -ENODEV
in this case, so that's the special case that we need to handle. So we
propagate all errors, except -ENODEV, so that real failures will still
cause the driver to fail probe.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: kernel@pengutronix.de
Cc: linux-imx@nxp.com
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devm_of_phy_get() can fail for a number of reasons besides probe
deferral. It can for example return -ENOMEM if it runs out of memory as
it tries to allocate devres structures. Propagating only -EPROBE_DEFER
is problematic because it results in these legitimately fatal errors
being treated as "PHY not specified in DT".
What we really want is to ignore the optional PHYs only if they have not
been specified in DT. devm_of_phy_get() returns -ENODEV in this case, so
that's the special case that we need to handle. So we propagate all
errors, except -ENODEV, so that real failures will still cause the
driver to fail probe.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Cc: Jingoo Han <jingoohan1@gmail.com>
Cc: Kukjin Kim <kgene@kernel.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
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regulator_get_optional() can fail for a number of reasons besides probe
deferral. It can for example return -ENOMEM if it runs out of memory as
it tries to allocate data structures. Propagating only -EPROBE_DEFER is
problematic because it results in these legitimately fatal errors being
treated as "regulator not specified in DT".
What we really want is to ignore the optional regulators only if they
have not been specified in DT. regulator_get_optional() returns -ENODEV
in this case, so that's the special case that we need to handle. So we
propagate all errors, except -ENODEV, so that real failures will still
cause the driver to fail probe.
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Shawn Lin <shawn.lin@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: linux-rockchip@lists.infradead.org
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Move the ACPI-specific structs hpx_type0, hpx_type1, hpx_type2 and
hpx_type3 to drivers/pci/pci-acpi.c as they are not used anywhere else.
Then remove the struct hotplug_program_ops that has been shared between
drivers/pci/probe.c and drivers/pci/pci-acpi.c from drivers/pci/pci.h as it
is no longer needed.
The struct hotplug_program_ops was added by 87fcf12e846a ("PCI/ACPI: Remove
the need for 'struct hotplug_params'") and replaced previously used struct
hotplug_params enabling the support for the _HPX Type 3 Setting Record that
was added by f873c51a155a ("PCI/ACPI: Implement _HPX Type 3 Setting
Record").
The new struct allowed for the static functions such program_hpx_type0(),
program_hpx_type1(), etc., from the drivers/pci/probe.c to be called from
the function pci_acpi_program_hp_params() in the drivers/pci/pci-acpi.c.
Previously a programming of _HPX Type 0 was as follows:
drivers/pci/probe.c:
program_hpx_type0()
...
pci_configure_device()
hp_ops = {
.program_type0 = program_hpx_type0,
...
}
pci_acpi_program_hp_params(&hp_ops)
drivers/pci/pci-acpi.c:
pci_acpi_program_hp_params(&hp_ops)
acpi_run_hpx(hp_ops)
decode_type0_hpx_record()
hp_ops->program_type0 # program_hpx_type0() called via hp_ops
After the ACPI-specific functions, structs, enums, etc., have been moved to
drivers/pci/pci-acpi.c there is no need for the hotplug_program_ops as all
of the _HPX Type 0, 1, 2 and 3 are directly accessible.
Link: https://lore.kernel.org/r/20190827094951.10613-4-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Move program_hpx_type0(), program_hpx_type1(), etc., and enums
hpx_type3_dev_type, hpx_type3_fn_type and hpx_type3_cfg_loc to
drivers/pci/pci-acpi.c as these functions and enums are ACPI-specific.
Move structs hpx_type0, hpx_type1, hpx_type2 and hpx_type3 to
drivers/pci/pci.h as these are shared between drivers/pci/pci-acpi.c and
drivers/pci/probe.c.
Link: https://lore.kernel.org/r/20190827094951.10613-3-kw@linux.com
Signed-off-by: Krzysztof Wilczynski <kw@linux.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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