wifi: ath12k: allocate HOST_DDR and BDF regions after Q6 RO region

Currently, the Q6 region contains a read-only firmware region along with
the BDF_MEM_REGION_TYPE and HOST_DDR_REGION_TYPE memory areas. The firmware
expects these writable memory regions to be assigned after the Q6 read-only
section.

However, the ath12k driver currently allocates the HOST_DDR_REGION_TYPE
starting from the base of the Q6 region, which includes the read-only
firmware area. As a result, the allocated memory regions overlap with the
read-only section, causing the firmware to assert during QMI memory
allocation. The Q6 memory region layout is as follows:

		Q6 Reserved Memory
	+--------------------------------------+
	|                                      |
	|  Read-only Firmware Region           |
	|  (Q6 RO Region)                      |
	|                                      |
	+--------------------------------------+ <--- bdf_addr_offset
	|  Writable Memory Region              |
	|  (BDF + HOST_DDR allocations)        |
	|                                      |
	+--------------------------------------+

Fix this by allocating the required memory regions only after the end of
the read-only region in the Q6 address space. The bdf_addr_offset parameter
indicates where the writable region starts. Both HOST_DDR and BDF regions
are allocated sequentially after this offset, with each region placed
immediately after the previous one to avoid gaps and overlaps.

Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.6-01275-QCAHKSWPL_SILICONZ-1

Fixes: 6757079c5890 ("wifi: ath12k: add support for fixed QMI firmware memory")
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Link: https://patch.msgid.link/20260630062048.1615178-4-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions