[v6,0/9] add support for WCN6750

Message

Manikanta Pubbisetty April 27, 2022, 11:18 a.m. UTC

WCN6750 is non-DBS 2x2 11AX chipset. Unlike QCA6390/WCN6855 which
are DBS (dual band simultaneous) solutions (2 LMACs), WCN6750 has a
single LMAC supporting 2G, 5G and 6G bands. It can be operated only
on one band at any given point.

WCN6750 is a PCIe device. Unlike other supported ATH11K PCIe devices
which are directly attached to APSS (Application Processor SubSystem),
WCN6750 is not attached to APSS, it is attached to the WPSS
(Wireless Processor SubSystem) Q6 processor, the FW which runs on the
Q6 processor will enumerate the PCIe device. Since APSS is unaware of
such a device, it has to be registered as a platform device(AHB) to the
kernel for device probing. Like other AHB devices, remoteproc APIs are
used to boot up or shutdown of WCN6750.

WCN6750 uses both AHB and PCIe ATH11K APIs for it's operation.
It uses AHB APIs for device probe and booting of the remote processor.
Once device is booted up, it uses ATH11K PCIe APIs for initialization
and register access. Hence, it is referred as hybrid bus device in
the rest of this series.

Since the chip is enumerated by WPSS Q6, device information like
BAR and BAR size is not known to the APSS processor. A new QMI message
called device info QMI request will be sent to the target for fetching
these details.

STA and AP modes are supported; Basic connectivity and ping are
verified in both the modes.

An important point to note is that though WCN6750 is a PCIe device,
it cannot be attached to any other platform except on Qualcomm
Snapdragon SoCs due to the aforementioned reasons.

Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-01720.1-QCAHSPSWPL_V1_V2_SILICONZ_LITE-1
Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1
Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.4.0.1-00192-QCAHKSWPL_SILICONZ-1

Manikanta Pubbisetty (9):
  dt: bindings: net: add bindings of WCN6750 for ath11k
  ath11k: Add HW params for WCN6750
  ath11k: Add bus params for WCN6750
  ath11k: Add register access logic for WCN6750
  ath11k: Fetch device information via QMI for WCN6750
  ath11k: Add QMI changes for WCN6750
  ath11k: HAL changes to support WCN6750
  ath11k: Datapath changes to support WCN6750
  ath11k: Add support for WCN6750 device
---
V6:
 - Initialized the bus_params fields for AHB/PCI devices which were not previously initialized
 - Commit log changes in the patch "ath11k: Datapath changes to support WCN6750"
 - Rebased on ToT SHAID: 3637b73b8e805d011202e2bf10947f2d206695d4

V5:
 - Rebased on ToT SHAID: 01be26cde012478db958d9bde530877c46031e76
 - Added Reviewed-by: tag to the DT binding patch

V4:
 - Addressed comments on DT binding (Matthias Kaehlcke <[e-mail]>)
 - Rebased on ToT SHAID: 607c3dc2750382befa0f3f20063943bd058a2bc1

V3:
 - Patch series with 19 patches is split in 2 patch series, this is the second one
 - Rebased on ToT SHAID: 7316a74e54318d0cd648242b18ea83cdef6dda96
 - Addessed DT binding concerns
 - PCI common code is moved to ath11k.ko
 - Added a new HW param for WCN6750 which uses fixed firmware memory, this is
   needed to differentiate WCN6750 from other ATH11K chipsets
 - Modified the logic in patch "ath11k: Add support for WCN6750 device" based on the latest DT binding

V2:
 - Rebased on ToT
 - Addressed comments on DT binding

 .../bindings/net/wireless/qcom,ath11k.yaml    | 361 ++++++++++++------
 drivers/net/wireless/ath/ath11k/Makefile      |   5 +-
 drivers/net/wireless/ath/ath11k/ahb.c         | 166 +++++++-
 drivers/net/wireless/ath/ath11k/ahb.h         |   1 +
 drivers/net/wireless/ath/ath11k/core.c        |  72 ++++
 drivers/net/wireless/ath/ath11k/core.h        |   5 +
 drivers/net/wireless/ath/ath11k/hal.c         |  15 +-
 drivers/net/wireless/ath/ath11k/hal.h         |  15 +-
 drivers/net/wireless/ath/ath11k/hw.c          | 166 ++++++++
 drivers/net/wireless/ath/ath11k/hw.h          |  11 +
 drivers/net/wireless/ath/ath11k/pci.c         |  35 +-
 drivers/net/wireless/ath/ath11k/pcic.c        |  77 ++--
 drivers/net/wireless/ath/ath11k/qmi.c         | 220 +++++++++--
 drivers/net/wireless/ath/ath11k/qmi.h         |  26 +-
 14 files changed, 967 insertions(+), 208 deletions(-)