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wifi: ath12k: add support to load shared firmware on multiPD

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IPQ5332 platform uses a MultiPD architecture where multiple firmware
instances share common read-only code segments. The driver currently
loads only the per-UserPD firmware, which leaves the shared read-only
firmware unloaded.

Add support for loading the shared read-only firmware once before the
UserPDs are powered up. The shared segment contains common code that is
identical across all UserPDs and reduces the total firmware memory
requirement.

Store the reserved memory mapping in struct ath12k_ahb_rproc_info so it can
be shared by all UserPDs and mapped only once. Keep the mapping valid
across UserPD power cycles, and unmap it when the last UserPD is removed.

Shut down the shared firmware from the rproc deconfiguration path when the
last UserPD is removed.

Also, pass NULL for the reloc_base parameter because the driver uses fixed
memory regions configured through device tree and does not need the
adjusted physical address after relocation.

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

Signed-off-by: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>
Reviewed-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan@oss.qualcomm.com>
Link: https://patch.msgid.link/20260811054316.518494-1-aaradhana.sahu@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Aaradhana Sahu 2026-08-11 11:13:16 +05:30 • committed by Jeff Johnson
commit c3bace8584
3 changed files with 157 additions and 21 deletions
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