On Wed, 2016-13-07 at 21:17:06 UTC, Ian Munsie wrote: > From: Ian Munsie <imun...@au1.ibm.com> > > This adds support for the peer model of the cxl kernel api to the > PowerNV PHB, in which physical function 0 represents the cxl function on > the card (an XSL in the case of the CX4), which other physical functions > will use for memory access and interrupt services. It is referred to as > the peer model as these functions are peers of one another, as opposed > to the Virtual PHB model which forms a hierarchy. > > This patch exports APIs to enable the peer mode, check if a PCI device > is attached to a PHB in this mode, and to set and get the peer AFU for > this mode. > > The cxl driver will enable this mode for supported cards by calling > pnv_cxl_enable_phb_kernel_api(). This will set a flag in the PHB to note > that this mode is enabled, and switch out it's controller_ops for the > cxl version. > > The cxl version of the controller_ops struct implements it's own > versions of the enable_device_hook and release_device to handle > refcounting on the peer AFU and to allocate a default context for the > device. > > Once enabled, the cxl kernel API may not be disabled on a PHB. Currently > there is no safe way to disable cxl mode short of a reboot, so until > that changes there is no reason to support the disable path. > > Signed-off-by: Ian Munsie <imun...@au1.ibm.com> > Reviewed-by: Andrew Donnellan <andrew.donnel...@au1.ibm.com>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/4361b03430d685610e5feea3ec cheers _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev