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Thu, 11 Dec 2025 00:08:03 -0800 (PST) Received: from [10.213.102.126] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7f4c22848a7sm1706651b3a.3.2025.12.11.00.08.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Dec 2025 00:08:03 -0800 (PST) From: Sivareddy Surasani Date: Thu, 11 Dec 2025 13:37:38 +0530 Subject: [PATCH 06/11] bus: mhi: host: pci: Add overflow disable flag for QDU100 H/W channels Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20251211-siva_mhi_dp2-v1-6-d2895c4ec73a@oss.qualcomm.com> References: <20251211-siva_mhi_dp2-v1-0-d2895c4ec73a@oss.qualcomm.com> In-Reply-To: <20251211-siva_mhi_dp2-v1-0-d2895c4ec73a@oss.qualcomm.com> To: Manivannan Sadhasivam , Jonathan Corbet , Arnd Bergmann , Greg Kroah-Hartman Cc: mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Upal Kumar Saha , Himanshu Shukla , Sivareddy Surasani , Vivek Pernamitta X-Mailer: b4 0.15-dev-47773 X-Proofpoint-GUID: lpOtKaIyqDLjiaa9955XHesM0mh3N9Jy X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjExMDA1OSBTYWx0ZWRfX2O9jzAVrcHUs T0gG276P3VES7EWXo1VC2WL2y8DkADrpTFd3bhw860DNeKwuiX5S0ofru7LKlYs0wFZmetqpDu8 FCS8AqQHokhjOVZFRmdEHffL+V7a+SD8wk185fQ8DjP7XA9uLVtBeVCs/oV2+9Tg5TSJ1LvUKff hkLMeiQxJMYFJpnBRJPC3YKmCB/gj6YwgMXjyYi2PGhaHJOww2oebFNf9CT9l0ygQQrIeYl0LVI t/7eo8wKC3QzpghU2kp9HOUI1JovicvX7kV4rFl88iTz0N+EQj4o5X0AXzo5uIqxCN0XEuq95M6 doh+wtT88iTQMtQRa/I2oEqgKmKn53r//AdasqNWC9WwMnhjTTFvAUjE7nRqM5WZxDNsIMl85o6 Q9rq1IdsPt4G86VibLs1zF9JIkqkDg== X-Authority-Analysis: v=2.4 cv=FYU6BZ+6 c=1 sm=1 tr=0 ts=693a7be5 cx=c_pps a=rEQLjTOiSrHUhVqRoksmgQ==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=bAolQom50hykzV7YMrMA:9 a=QEXdDO2ut3YA:10 a=2VI0MkxyNR6bbpdq8BZq:22 X-Proofpoint-ORIG-GUID: lpOtKaIyqDLjiaa9955XHesM0mh3N9Jy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-10_03,2025-12-09_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 malwarescore=0 phishscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512110059 From: Vivek Pernamitta Add overflow disable flag for QDU100 H/W channels. Signed-off-by: Vivek Pernamitta Signed-off-by: Sivareddy Surasani --- drivers/bus/mhi/host/pci_generic.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_= generic.c index bb3c5350a462..814f8fdae378 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -94,6 +94,22 @@ struct mhi_pci_dev_info { .doorbell_mode_switch =3D false, \ } =20 +#define MHI_CHANNEL_CONFIG_DL_OVF_DISABLE(ch_num, ch_name, el_count, ev_ri= ng) \ + { \ + .num =3D ch_num, \ + .name =3D ch_name, \ + .num_elements =3D el_count, \ + .event_ring =3D ev_ring, \ + .dir =3D DMA_FROM_DEVICE, \ + .ee_mask =3D BIT(MHI_EE_AMSS), \ + .pollcfg =3D 0, \ + .ovf_disable =3D true, \ + .doorbell =3D MHI_DB_BRST_DISABLE, \ + .lpm_notify =3D false, \ + .offload_channel =3D false, \ + .doorbell_mode_switch =3D false, \ + } + #define MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(ch_num, ch_name, el_count, ev_ring= ) \ { \ .num =3D ch_num, \ @@ -295,9 +311,9 @@ static const struct mhi_channel_config mhi_qcom_qdu100_= channels[] =3D { static const struct mhi_channel_config mhi_qcom_qdu100_vf_channels[] =3D { /* HW channels */ MHI_CHANNEL_CONFIG_UL(104, "IP_HW1", 2048, 1), - MHI_CHANNEL_CONFIG_DL(105, "IP_HW1", 2048, 2), + MHI_CHANNEL_CONFIG_DL_OVF_DISABLE(105, "IP_HW1", 2048, 2), MHI_CHANNEL_CONFIG_UL(106, "IP_HW2", 2048, 3), - MHI_CHANNEL_CONFIG_DL(107, "IP_HW2", 2048, 4), + MHI_CHANNEL_CONFIG_DL_OVF_DISABLE(107, "IP_HW2", 2048, 4), }; =20 static struct mhi_event_config mhi_qcom_qdu100_events[] =3D { --=20 2.34.1