On 5/6/2024 9:57 PM, Harshitha Prem wrote: > From: Karthikeyan Periyasamy <quic_periyasa@xxxxxxxxxxx> > > Currently, single device is probed and once firmware is ready, the device > is registered to mac80211. For multi-link operation, different bands of > different devices or same device would be part of a single wiphy and for > this, hardware device group abstraction would be helpful. > > Hardware device group abstraction - when there are multiple devices (with > single radio or dual radio) that are connected by any means of interface > for communicating between them, then these devices can be combined > together as a single group using a group id to form a group abstraction > and register to mac80211. > > The grouping information of multiple devices would be based on device tree > during device probe. If no such information is available then a single > device will be part of group abstraction and registered to mac80211 else > multiple devices advertised in device tree are combined and then registered > to mac80211. > > For device group abstraction, a base structure named ath12k_hw_group (ag) > and the following helpers are introduced: > ath12k_core_hw_group_alloc() : allocate ath12k_hw_group (ag) > based on group id and number > of devices that are going to > be part of this group. > ath12k_core_hw_group_free() : free ag during deinit. > ath12k_core_assign_hw_group() : assign/map the details of group > to ath12k_base (ab). > ath12k_core_unassign_hw_group() : unassign/unmap the details of ag > in ath12k_base (ab). > ath12k_core_hw_group_create() : create the devices which are part > of group (ag). > ath12k_core_hw_group_destroy() : cleanup the devices in ag > > These helpers are used during device probe and mapping the group to the > devices involved. > > Please find the illustration of how multiple devices might be combined > together in future based on group id. > > Grouping of multiple devices (in future) > > +------------------------------------------------------------------------+ > | +-------------------------------------+ +-------------------+ | > | | +-----------+ | | +-----------+ | | +-----------+ | | > | | | ar (2GHz) | | | | ar (5GHz) | | | | ar (6GHz) | | | > | | +-----------+ | | +-----------+ | | +-----------+ | | > | | ath12k_base (ab) | | ath12k_base (ab) | | > | | (Dual band device) | | | | > | +-------------------------------------+ +-------------------+ | > | ath12k_hw_group (ag) based on group id | > +------------------------------------------------------------------------+ > > In the above representation, two devices are combined into single group > based on group id. > > Add base code changes where single device would be part of a group with an > invalid group id forming an group abstraction. Multi device grouping will > be introduced in future. > > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@xxxxxxxxxxx> > Co-developed-by: Harshitha Prem <quic_hprem@xxxxxxxxxxx> > Signed-off-by: Harshitha Prem <quic_hprem@xxxxxxxxxxx> Acked-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
