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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84564e7480csm7026590b3a.33.2026.06.22.03.03.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Jun 2026 03:03:56 -0700 (PDT) Message-ID: <9cb74a72-baec-41fc-81da-e3948175870b@oss.qualcomm.com> Date: Mon, 22 Jun 2026 18:03:54 +0800 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH ath-next v2] wifi: ath12k: add QMI capability negotiation for dynamic memory mode To: Aaradhana Sahu , ath12k@lists.infradead.org Cc: linux-wireless@vger.kernel.org References: <20260619065816.2139392-1-aaradhana.sahu@oss.qualcomm.com> From: Baochen Qiang Content-Language: en-US In-Reply-To: <20260619065816.2139392-1-aaradhana.sahu@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjIyMDA5OCBTYWx0ZWRfX7kTyvAUB3N0r F/wO4zoOIlgxsJ9lI1waJyAZYYcQF+XkI656d5uByhyvDEZlc+PO+W3hqHESL1CL5zdU6F0F0/o fhQqkpX6DggP2D7iXD5cIX8EeBbg6JQrHNMQz+7KOMef9dWLjqyDL/Y77QUbo/78KxgL/cVpkkx CHFp/BTbEREXBRx9Q2yEIQdZquXy1rdvCxF4Acs6pFkSpvBAupyc0b8K9w6N4BZbF6vZLMclcJU JY8p6VlhwOGS/PZ2qwlQs2lJiRdtCm5h6N6Z7gkhFuN1PhCw8yiAJZq7ycWz1tFS8zHFklpVn5S 1TOk3mTtOs7KYQVmWBc1HChmotMoVnF9NEejoNJ06hsmOpUFBgQiUedUyoYAAI0oMALjoo3+Gjl 3ot2hr6m18ZAAXYVwR20MkJ/06U3gioKe6vfgzUKP7k0a/1d28W4NQDADykE+OEox1kensZPBsu 9bvyxHdAf7h60CDc60Q== X-Proofpoint-Spam-Info: AW1haW4tMjYwNjIyMDA5OCBTYWx0ZWRfX5yBi5JNV1x9Y tW43sYnhUAOdkD7eNlzPjkQapgu5C8XMGH0SD8Aef4VKU/zItFgDTVbZ17RvDo1mCSjfWEjZX+X Nv9Rf01SeRhgJURqt+TtqKo0PYDih2Q= X-Proofpoint-ORIG-GUID: mX42PQh5aUyvPsBWlWePtW3HBIzrJ06l X-Proofpoint-GUID: mX42PQh5aUyvPsBWlWePtW3HBIzrJ06l X-Authority-Analysis: v=2.4 cv=UrZT8ewB c=1 sm=1 tr=0 ts=6a39088e cx=c_pps a=rEQLjTOiSrHUhVqRoksmgQ==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=EUspDBNiAAAA:8 a=vXOABIWjEGlRoqXTTScA:9 a=QEXdDO2ut3YA:10 a=2VI0MkxyNR6bbpdq8BZq:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-22_01,2026-06-18_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 impostorscore=0 clxscore=1015 malwarescore=0 bulkscore=0 suspectscore=0 priorityscore=1501 lowpriorityscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606220098 On 6/19/2026 2:58 PM, Aaradhana Sahu wrote: > On AHB platforms, firmware operates in two modes: fixed-memory mode where > firmware uses hardcoded addresses for memory regions such as BDF and does > not request HOST_DDR memory from the host, and dynamic-memory mode where > firmware expects the host to provide memory addresses including HOST_DDR > after the Q6 read-only region and relies on host allocation for all memory > types. > > Introduce QMI capability negotiation to support both modes. Add a new QMI > PHY capability flag dynamic_ddr_support which is advertised by firmware to > indicate it supports dynamic memory mode. When the host detects this > capability, set the dynamic_mem_support flag in the host capability message > to signal the host is ready to provide dynamic memory allocation. This > triggers firmware to send the HOST_DDR memory request and use the > host-provided address. > > For backward compatibility, if firmware doesn't advertise > dynamic_ddr_support, the firmware continues to operate in fixed-memory mode > where firmware uses predefined addresses. > > Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.6-01243-QCAHKSWPL_SILICONZ-1 > Tested-on: IPQ5332 hw1.0 AHB WLAN.WBE.1.6-01275-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Aaradhana Sahu Reviewed-by: Baochen Qiang