On 21/04/10 12:53AM, Amey Narkhede wrote: > PCI and PCIe devices may support a number of possible reset mechanisms > for example Function Level Reset (FLR) provided via Advanced Feature or > PCIe capabilities, Power Management reset, bus reset, or device specific reset. > Currently the PCI subsystem creates a policy prioritizing these reset methods > which provides neither visibility nor control to userspace. > > Expose the reset methods available per device to userspace, via sysfs > and allow an administrative user or device owner to have ability to > manage per device reset method priorities or exclusions. > This feature aims to allow greater control of a device for use cases > as device assignment, where specific device or platform issues may > interact poorly with a given reset method, and for which device specific > quirks have not been developed. > > Changes in v2: > - Use byte array instead of bitmap to keep track of > ordering of reset methods > - Fix incorrect use of reset_fn field in octeon driver > - Allow writing comma separated list of names of supported reset > methods to reset_method sysfs attribute > - Writing empty string instead of "none" to reset_method attribute > disables ability of reset the device > > Sending Raphael's patch again as this series depends on it. > > Amey Narkhede (4): > PCI: Add pcie_reset_flr to follow calling convention of other reset > methods > PCI: Add new array for keeping track of ordering of reset methods > PCI: Remove reset_fn field from pci_dev > PCI/sysfs: Allow userspace to query and set device reset mechanism > > Raphael Norwitz (1): > PCI: merge slot and bus reset implementations > > Documentation/ABI/testing/sysfs-bus-pci | 16 ++ > drivers/crypto/cavium/nitrox/nitrox_main.c | 4 +- > .../ethernet/cavium/liquidio/lio_vf_main.c | 2 +- > drivers/pci/pci-sysfs.c | 93 ++++++++- > drivers/pci/pci.c | 176 ++++++++++-------- > drivers/pci/pci.h | 10 +- > drivers/pci/pcie/aer.c | 12 +- > drivers/pci/probe.c | 4 +- > drivers/pci/quirks.c | 11 +- > include/linux/pci.h | 11 +- > 10 files changed, 236 insertions(+), 103 deletions(-) > > -- > 2.31.1 A gentle ping ;) Thanks, Amey
