[PATCH ath-next 0/3] wifi: ath12k: Fix memory allocation and improve reserved memory handling

[Aaradhana Sahu]

The current implementation relies on index-based device tree reserved
memory lookup. Different platform variants define reserved memory
regions in different orders and combinations, making the index-based
lookup fragile across platforms.

Currently, the driver allocates the HOST_DDR_REGION_TYPE
starting from the base of the Q6 region, which overlaps the Q6 read-only
firmware section. This causes firmware assertions during QMI memory
allocation, as the firmware expects writable regions to be placed after the
read-only section.

Address these issues by:
- switching to name-based reserved memory lookup to remove dependency on
  device tree node ordering,
- refactoring QMI memory assignment logic to reduce code duplication and
  improve maintainability,
- placing HOST_DDR and BDF regions after the Q6 read-only firmware section
  using the bdf_addr_offset parameter.

This series ensure correct reserved memory handling across different
platform variants, prevent overlapping memory allocations, and maintain
backward compatibility by reusing existing reserved memory region names
defined in device tree bindings.

Overview:
  - Patch [1/3] switches to name-based reserved memory lookup for platform
    compatibility.
  - Patch [2/3] refactors QMI memory assignment to eliminate code
    duplication.
  - Patch [3/3] fixes memory allocation to place HOST_DDR and BDF regions
    after Q6 read-only section.

Aaradhana Sahu (3):
  wifi: ath12k: switch to name-based reserved memory lookup
  wifi: ath12k: refactor QMI memory assignment
  wifi: ath12k: allocate HOST_DDR and BDF regions after Q6 RO region

 drivers/net/wireless/ath/ath12k/ahb.c  |  18 +--
 drivers/net/wireless/ath/ath12k/core.c |  25 ----
 drivers/net/wireless/ath/ath12k/core.h |   2 -
 drivers/net/wireless/ath/ath12k/qmi.c  | 168 ++++++++++---------------
 4 files changed, 78 insertions(+), 135 deletions(-)


base-commit: 83f028be15fe071efbee8e27837538d6cca77e87
-- 
2.34.1