kernel/linux.git/include/linux/pds/pds_common.h, branch v6.6.132

vfio/pds: register with the pds_core PF

2023-08-16T16:53:20+00:00

The pds_core driver will supply adminq services, so find the PF and register with the DSC services. Use the following commands to enable a VF: echo 1 > /sys/bus/pci/drivers/pds_core/$PF_BDF/sriov_numvfs Signed-off-by: Brett Creeley Signed-off-by: Shannon Nelson Reviewed-by: Simon Horman Reviewed-by: Kevin Tian Reviewed-by: Shameer Kolothum Reviewed-by: Jason Gunthorpe Link: https://lore.kernel.org/r/20230807205755.29579-5-brett.creeley@amd.com Signed-off-by: Alex Williamson

pds_core: Require callers of register/unregister to pass PF drvdata

2023-08-16T16:53:11+00:00

Pass a pointer to the PF's private data structure rather than bouncing in and out of the PF's PCI function address. Signed-off-by: Shannon Nelson Signed-off-by: Brett Creeley Reviewed-by: Kevin Tian Reviewed-by: Shameer Kolothum Reviewed-by: Jason Gunthorpe Link: https://lore.kernel.org/r/20230807205755.29579-4-brett.creeley@amd.com Signed-off-by: Alex Williamson

pds_vdpa: move enum from common to adminq header

2023-06-27T14:47:08+00:00

The pds_core_logical_qtype enum and IFNAMSIZ are not needed in the common PDS header, only needed when working with the adminq, so move them to the adminq header. Note: This patch might conflict with pds_vfio patches that are in review, depending on which patchset gets pulled first. Signed-off-by: Shannon Nelson Acked-by: Jason Wang Message-Id: <20230519215632.12343-5-shannon.nelson@amd.com> Signed-off-by: Michael S. Tsirkin

pds_vdpa: Add new vDPA driver for AMD/Pensando DSC

2023-06-27T14:47:08+00:00

This is the initial auxiliary driver framework for a new vDPA device driver, an auxiliary_bus client of the pds_core driver. The pds_core driver supplies the PCI services for the VF device and for accessing the adminq in the PF device. This patch adds the very basics of registering for the auxiliary device and setting up debugfs entries. Signed-off-by: Shannon Nelson Acked-by: Jason Wang Message-Id: <20230519215632.12343-4-shannon.nelson@amd.com> Signed-off-by: Michael S. Tsirkin

pds_core: publish events to the clients

2023-04-21T07:29:13+00:00

When the Core device gets an event from the device, or notices the device FW to be up or down, it needs to send those events on to the clients that have an event handler. Add the code to pass along the events to the clients. The entry points pdsc_register_notify() and pdsc_unregister_notify() are EXPORTed for other drivers that want to listen for these events. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller

pds_core: add the aux client API

2023-04-21T07:29:13+00:00

Add the client API operations for running adminq commands. The core registers the client with the FW, then the client has a context for requesting adminq services. We expect to add additional operations for other clients, including requesting additional private adminqs and IRQs, but don't have the need yet. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller

pds_core: add auxiliary_bus devices

2023-04-21T07:29:13+00:00

An auxiliary_bus device is created for each vDPA type VF at VF probe and destroyed at VF remove. The aux device name comes from the driver name + VIF type + the unique id assigned at PCI probe. The VFs are always removed on PF remove, so there should be no issues with VFs trying to access missing PF structures. The auxiliary_device names will look like "pds_core.vDPA.nn" where 'nn' is the VF's uid. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller

pds_core: set up the VIF definitions and defaults

2023-04-21T07:29:13+00:00

The Virtual Interfaces (VIFs) supported by the DSC's configuration (vDPA, Eth, RDMA, etc) are reported in the dev_ident struct and made visible in debugfs. At this point only vDPA is supported in this driver so we only setup devices for that feature. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller

pds_core: add devcmd device interfaces

2023-04-21T07:29:12+00:00

The devcmd interface is the basic connection to the device through the PCI BAR for low level identification and command services. This does the early device initialization and finds the identity data, and adds devcmd routines to be used by later driver bits. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller

pds_core: initial framework for pds_core PF driver

2023-04-21T07:29:12+00:00

This is the initial PCI driver framework for the new pds_core device driver and its family of devices. This does the very basics of registering for the new PF PCI device 1dd8:100c, setting up debugfs entries, and registering with devlink. Signed-off-by: Shannon Nelson Acked-by: Jakub Kicinski Signed-off-by: David S. Miller