Talos™ II Linux sources for OpenPOWER https://git.raptorcs.com/git/talos-op-linux/atom?h=master 2020-01-23T22:40:03+00:00 2020-01-23T22:40:03+00:00 Dongdong Liu liudongdong3@huawei.com 2020-01-23T08:26:31+00:00 urn:sha1:d95f20c4f07020ebc605f3b46af4b6db9eb5fc99 Previously we did not call INIT_KFIFO() for aer_fifo. This leads to kfifo_put() sometimes returning 0 (queue full) when in fact it is not. It is easy to reproduce the problem by using aer-inject: $ aer-inject -s :82:00.0 multiple-corr-nonfatal The content of the multiple-corr-nonfatal file is as below: AER COR RCVR HL 0 1 2 3 AER UNCOR POISON_TLP HL 4 5 6 7 Fixes: 27c1ce8bbed7 ("PCI/AER: Use kfifo for tracking events instead of reimplementing it") Link: https://lore.kernel.org/r/1579767991-103898-1-git-send-email-liudongdong3@huawei.com Signed-off-by: Dongdong Liu <liudongdong3@huawei.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> 2020-01-23T22:39:53+00:00 Bjorn Helgaas bhelgaas@google.com 2019-12-13T22:46:05+00:00 urn:sha1:8d077c3ce0109c406c265cafc334258caee47e6d Define dev_fmt() with the common prefix of log messages so we don't have to repeat it in every printk. No functional change intended. Link: https://lore.kernel.org/r/20191213225709.GA213811@google.com Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> 2020-01-23T22:39:02+00:00 Yicong Yang yangyicong@hisilicon.com 2019-12-13T11:44:34+00:00 urn:sha1:01daacfb9035e5b86d43a01f11a0614648f306c1 PCI error recovery will fail if any device under the Root Port doesn't have an error_detected callback. Currently only the failure result is printed, which is not enough to identify the driver that lacks the callback. Log a message to identify the device with no error_detected callback. [bhelgaas: tweak log message] Link: https://lore.kernel.org/r/1576237474-32021-1-git-send-email-yangyicong@hisilicon.com Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> 2019-11-28T14:54:32+00:00 Bjorn Helgaas bhelgaas@google.com 2019-11-28T14:54:32+00:00 urn:sha1:e87eb585d31fadb5e9e549a1de4b2da60a79bfc9 - Add NumaChip SPDX header (Krzysztof Wilczynski) - Replace EXTRA_CFLAGS with ccflags-y (Krzysztof Wilczynski) - Remove unused includes (Krzysztof Wilczynski) - Avoid AMD FCH XHCI USB PME# from D0 defect that prevents wakeup on USB 2.0 or 1.1 connect events (Kai-Heng Feng) - Removed unused sysfs attribute groups (Ben Dooks) - Remove PTM and ASPM dependencies on PCIEPORTBUS (Bjorn Helgaas) - Add PCIe Link Control 2 register field definitions to replace magic numbers in AMDGPU and Radeon CIK/SI (Bjorn Helgaas) - Fix incorrect Link Control 2 Transmit Margin usage in AMDGPU and Radeon CIK/SI PCIe Gen3 link training (Bjorn Helgaas) - Use pcie_capability_read_word() instead of pci_read_config_word() in AMDGPU and Radeon CIK/SI (Frederick Lawler) * pci/misc: drm/radeon: Prefer pcie_capability_read_word() drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/radeon: Correct Transmit Margin masks drm/amdgpu: Prefer pcie_capability_read_word() drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/amdgpu: Correct Transmit Margin masks PCI: Add #defines for Enter Compliance, Transmit Margin PCI: Allow building PCIe things without PCIEPORTBUS PCI: Remove PCIe Kconfig dependencies on PCI PCI/ASPM: Remove dependency on PCIEPORTBUS PCI/PTM: Remove dependency on PCIEPORTBUS PCI/PTM: Remove spurious "d" from granularity message PCI: sysfs: Remove unused attribute groups x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect PCI: Remove unused includes and superfluous struct declaration x86/PCI: Replace deprecated EXTRA_CFLAGS with ccflags-y x86/PCI: Correct SPDX comment style x86/PCI: Add NumaChip SPDX GPL-2.0 to replace COPYING boilerplate 2019-11-28T14:54:29+00:00 Bjorn Helgaas bhelgaas@google.com 2019-11-28T14:54:29+00:00 urn:sha1:abd05c97f9711a4baa8cd43832893b8df45d459e - Remove unnecessary ASPM locking (Bjorn Helgaas) - Add support for disabling L1 PM Substates (Heiner Kallweit) - Allow re-enabling Clock PM after it has been disabled (Heiner Kallweit) - Add sysfs attributes for controlling ASPM link states (Heiner Kallweit) - Remove CONFIG_PCIEASPM_DEBUG, including "link_state" and "clk_ctl" sysfs files (Heiner Kallweit) * pci/aspm: PCI/ASPM: Remove PCIEASPM_DEBUG Kconfig option and related code PCI/ASPM: Add sysfs attributes for controlling ASPM link states PCI/ASPM: Add pcie_aspm_get_link() PCI/ASPM: Allow re-enabling Clock PM PCI/ASPM: Add L1 PM substate support to pci_disable_link_state() PCI/ASPM: Remove pcie_aspm_enabled() unnecessary locking 2019-11-21T23:31:46+00:00 Heiner Kallweit hkallweit1@gmail.com 2019-10-05T12:08:52+00:00 urn:sha1:87e90283c94c76ee11d379ab5a0973382bbd0baf Previously, CONFIG_PCIEASPM_DEBUG enabled "link_state" and "clk_ctl" sysfs files that controlled ASPM. We believe these files were rarely if ever used. We recently added sysfs ASPM controls that are always present, so the debug code is no longer needed. Removing this debug code has been discussed for quite some time, see e.g. [0]. Remove PCIEASPM_DEBUG and the related code. [0] https://lore.kernel.org/lkml/20180727202619.GD173328@bhelgaas-glaptop.roam.corp.google.com/ Link: https://lore.kernel.org/r/ec935d8e-c084-3938-f1d1-748617596b25@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> 2019-11-21T23:30:24+00:00 Heiner Kallweit hkallweit1@gmail.com 2019-10-05T12:07:56+00:00 urn:sha1:72ea91afbfb08619696ccde610ee4d0d29cf4a1d Add sysfs attributes to Endpoints and other Upstream Ports to control ASPM, Clock PM, and L1 PM Substates. The new attributes are: /sys/devices/pci*/.../link/clkpm /sys/devices/pci*/.../link/l0s_aspm /sys/devices/pci*/.../link/l1_aspm /sys/devices/pci*/.../link/l1_1_aspm /sys/devices/pci*/.../link/l1_2_aspm /sys/devices/pci*/.../link/l1_1_pcipm /sys/devices/pci*/.../link/l1_2_pcipm An attribute is only visible if both ends of the Link leading to the device support the state. Writing y/1/on to the file enables the state; n/0/off disables it. These attributes can be used to tune the power/performance tradeoff for individual devices. [bhelgaas: commit log, rename directory to "link"] Link: https://lore.kernel.org/r/b1c83f8a-9bf6-eac5-82d0-cf5b90128fbf@gmail.com Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> 2019-11-21T13:52:33+00:00 Bjorn Helgaas bhelgaas@google.com 2019-11-06T22:09:40+00:00 urn:sha1:b6479581e6823239c3e03b1d006f160c6c491ba0 drivers/pci/pcie/Kconfig is only sourced by drivers/pci/Kconfig, and only when PCI is defined, so there's no need to depend on PCI again. Remove the unnecessary dependencies. Link: https://lore.kernel.org/r/20191106222420.10216-5-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> 2019-11-21T13:52:32+00:00 Bjorn Helgaas bhelgaas@google.com 2019-11-06T22:07:36+00:00 urn:sha1:33ce09ef17329be407fc238a214d6f49fdc8a007 The ASPM support does not depend on the portdrv, so remove the Kconfig dependency. Link: https://lore.kernel.org/r/20191106222420.10216-4-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> 2019-11-21T13:52:32+00:00 Bjorn Helgaas bhelgaas@google.com 2019-11-06T22:01:15+00:00 urn:sha1:97a0ac8a4678fb6340f6b2646e7c46e9c2872e02 The PTM support does not depend on the portdrv, so remove the Kconfig dependency. Link: https://lore.kernel.org/r/20191106222420.10216-3-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Cc: Jonathan Yong <jonathan.yong@intel.com>