[PATCH ath-next v2 0/2] wifi: ath12k: accept what newer QCN9274 firmware requests at boot

[Goran Sustek]

With QCN9274 firmware WLAN.WBE.1.6-01243 (the newest in
ath12k-firmware) the driver logs three warnings at every boot:

  ath12k_wifi7_pci 0000:06:00.0: memory type 10 not supported
  ath12k_wifi7_pci 0000:06:00.0: Invalid module id 2
  ath12k_wifi7_pci 0000:06:00.0: failed to parse tlv -22

The firmware requests the AFC memory region (QMI memory type 10) and
advertises direct buffer rings for modules 2 (CV upload) and 3 (Wi-Fi
radar), all defined in Qualcomm's interface headers but not known to
the driver.

Patch 1 answers the AFC region request with size 0, so that the
firmware sees no AFC region instead of one at bus address 0. Patch 2
makes the DMA ring capability parser skip unknown module IDs instead
of aborting the event, and stores the accepted entries contiguously.

Tested on two QCN9274 hw2.0 PCI boards (AP MLD on 5 + 6 GHz, and on
5 + 2.4 GHz) with the series on top of v7.3.1: all three warnings are
gone, the firmware reaches firmware ready, all links come up and serve
clients, and there is no firmware crash, call trace or IOMMU fault.

Changes in v2:
- Patch 1: do not allocate the AFC region, because ath12k does not
  support AFC. Answer the request with size 0 instead, and log at
  debug level. New subject. (Rameshkumar Sundaram)
- Dropped v1 patch 3 ("name direct buffer ring modules 2 and 3").
  ath12k has no user for these rings, and patch 2 alone removes the
  warnings (tested on both boards). The firmware uses such a ring only
  after the host configures it, so a host that does not implement the
  feature loses nothing by skipping the entry.
- Patch 2: commit message reworded and code comment corrected; credit
  Nazar's earlier version and Jeff's suggestion from its review.
- Rebased on ath-next a3ddbb457687.

v1: https://lore.kernel.org/r/20261030220824.915760-1-gsustek@xxxxxxxxx

Goran Sustek (2):
  wifi: ath12k: report no AFC memory region to firmware
  wifi: ath12k: skip unknown direct buffer ring module IDs

 drivers/net/wireless/ath/ath12k/qmi.c | 12 ++++++++
 drivers/net/wireless/ath/ath12k/qmi.h |  1 +
 drivers/net/wireless/ath/ath12k/wmi.c | 43 +++++++++++++++++----------
 3 files changed, 41 insertions(+), 15 deletions(-)


base-commit: a3ddbb45768717b5c9f923489387cf55c838d1ad
-- 
2.56.0