From: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
To: Aaradhana Sahu <aaradhana.sahu@oss.qualcomm.com>,
ath12k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org, jjohnson@kernel.org,
quic_kiranv@quicinc.com,
vasanthakumar.thiagarajan@oss.qualcomm.com
Subject: Re: [PATCH ath-next] wifi: ath12k: add support to load shared firmware on multiPD
Date: Wed, 12 Aug 2026 10:03:58 +0800 [thread overview]
Message-ID: <56f52bf5-e6ef-47de-974d-fabd24fb2329@oss.qualcomm.com> (raw)
In-Reply-To: <20260811054316.518494-1-aaradhana.sahu@oss.qualcomm.com>
On 8/11/2026 1:43 PM, Aaradhana Sahu wrote:
> 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>
next prev parent reply other threads:[~2026-08-12 2:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-11 5:43 [PATCH ath-next] wifi: ath12k: add support to load shared firmware on multiPD Aaradhana Sahu
2026-08-11 9:08 ` Vasanthakumar Thiagarajan
2026-08-12 13:57 ` Jeff Johnson
2026-08-12 2:03 ` Baochen Qiang [this message]
2026-08-14 18:24 ` Jeff Johnson
2026-08-17 6:10 ` Aaradhana Sahu
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