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Tue, 14 Apr 2026 02:52:01 -0700 (PDT) X-Received: by 2002:a05:6a00:2d85:b0:81f:3bcb:af2a with SMTP id d2e1a72fcca58-82f0c303511mr17536273b3a.26.1776160321051; Tue, 14 Apr 2026 02:52:01 -0700 (PDT) Received: from [10.217.219.169] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f0c330925sm15955528b3a.15.2026.04.14.02.51.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Apr 2026 02:52:00 -0700 (PDT) Message-ID: Date: Tue, 14 Apr 2026 15:21:56 +0530 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 5/9] bus: mhi: Add QDU100 variant and image_id firmware fallback To: Manivannan Sadhasivam Cc: Jonathan Corbet , Shuah Khan , Jeff Hugo , Carl Vanderlip , Oded Gabbay , andersson@kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, mhi@lists.linux.dev References: <20260319-sahara_protocol_new_v2-v4-0-47ad79308762@oss.qualcomm.com> <20260319-sahara_protocol_new_v2-v4-5-47ad79308762@oss.qualcomm.com> <5lfbhyzyyji6cuve3uzd26rfgnqotcupelppgehdj36dq7op6j@hn3jmhtqzntq> Content-Language: en-US From: Kishore Batta In-Reply-To: <5lfbhyzyyji6cuve3uzd26rfgnqotcupelppgehdj36dq7op6j@hn3jmhtqzntq> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: NXIHrPMMhJ2hgME3-3lrRXmXamVR8bZ2 X-Authority-Analysis: v=2.4 cv=RoH16imK c=1 sm=1 tr=0 ts=69de0e42 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=Io-4PmWlcMg8xS9VqXEA:9 a=0bXxn9q0MV6snEgNplNhOjQmxlI=:19 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDE0MDA5MiBTYWx0ZWRfX5VTmVbdbCfqe +MmxyY3MqJPMCliEekGyxac3XfDDFPlumVKoVu3RD9U5bVcvhLbKw8Z5g6Bic50sFFV9GPkOAkx 8T+qmIQHbUR6T7TzDVATRZiCjMUnGGDboMiHUoht7ZJbH2xTyqtAcdOP9QRNXcq6dN+f+uML189 YyUzYJ5LAKp2JjSZ41Mfa4I+9SdrRs4KdzZ1ox47Wj9K4BZR/PWg9GDwvz8IfJtFWodzNgxNm+J 5dH3aTjqMsO9+5v8c3JFkVNK927G89l8P2HG0tBQcxdIEe+6t70P1xCUY+gCdDsz0ofn0WKqjjD A7yzKyQ7xSJQRyj9bNT6HXessKsd044NwxHKmr0ndzuVSDj5VWxRqcHRKxG6Dc8Lrzk263NqtTw wUBlxBaJU42Jm5x8s5xZ5YPyKRNLrSzxkrP4O4z9H0pMfx460lfWKIEPb1Ifb0p/tByi0nDyU1N TBPdf6AxPCx6da3Dpdg== X-Proofpoint-GUID: NXIHrPMMhJ2hgME3-3lrRXmXamVR8bZ2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-14_02,2026-04-13_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 spamscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604070000 definitions=main-2604140092 On 4/13/2026 5:04 PM, Manivannan Sadhasivam wrote: > On Thu, Mar 19, 2026 at 12:01:45PM +0530, Kishore Batta wrote: >> The Sahara driver currently selects a firmware image table based on the >> attached device, but it does not recognize QDU100 devices that expose the >> protocol on the SAHARA MHI channel. As a result, the host cannot associate >> QDU100 devices with the correct firmware namespace during image transfer. >> >> Extend the probe-time variant selection to match the SAHARA MHI channel >> and associate it with the QDU100 firmware folder. Add an image_id based >> firmware lookup fallback for cases where an image does not have an explicit >> table entry. This allows required images to be provisioned by the platform >> without requiring device specific client drivers or additional registration >> mechanisms. >> >> This change only affects devices matched on the SAHARA channel and does not >> change behavior for existing AIC100 and AIC200 devices. >> >> Signed-off-by: Kishore Batta >> --- >> drivers/bus/mhi/sahara/sahara.c | 77 ++++++++++++++++++++++++++++++++++++++--- >> 1 file changed, 72 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/bus/mhi/sahara/sahara.c b/drivers/bus/mhi/sahara/sahara.c >> index 8f1c0d72066c0cf80c09d78bfc51df2e482133b9..4ea14c57774f51a778289d7409372a6ab21fea60 100644 >> --- a/drivers/bus/mhi/sahara/sahara.c >> +++ b/drivers/bus/mhi/sahara/sahara.c >> @@ -234,6 +234,36 @@ static const char * const aic200_image_table[] = { >> [78] = "qcom/aic200/pvs.bin", >> }; >> >> +static const char * const qdu100_image_table[] = { >> + [5] = "qcom/qdu100/uefi.elf", >> + [8] = "qcom/qdu100/qdsp6sw.mbn", >> + [16] = "qcom/qdu100/efs1.bin", >> + [17] = "qcom/qdu100/efs2.bin", >> + [20] = "qcom/qdu100/efs3.bin", >> + [23] = "qcom/qdu100/aop.mbn", >> + [25] = "qcom/qdu100/tz.mbn", >> + [29] = "qcom/qdu100/zeros_1sector.bin", >> + [33] = "qcom/qdu100/hypvm.mbn", >> + [34] = "qcom/qdu100/mdmddr.mbn", >> + [36] = "qcom/qdu100/multi_image_qti.mbn", >> + [37] = "qcom/qdu100/multi_image.mbn", >> + [38] = "qcom/qdu100/xbl_config.elf", >> + [39] = "qcom/qdu100/abl_userdebug.elf", >> + [40] = "qcom/qdu100/zeros_1sector.bin", >> + [41] = "qcom/qdu100/devcfg.mbn", >> + [42] = "qcom/qdu100/zeros_1sector.bin", >> + [45] = "qcom/qdu100/tools_l.elf", >> + [46] = "qcom/qdu100/Quantum.elf", >> + [47] = "qcom/qdu100/quest.elf", >> + [48] = "qcom/qdu100/xbl_ramdump.elf", >> + [49] = "qcom/qdu100/shrm.elf", >> + [50] = "qcom/qdu100/cpucp.elf", >> + [51] = "qcom/qdu100/aop_devcfg.mbn", >> + [52] = "qcom/qdu100/fw_csm_gsi_3.0.elf", >> + [53] = "qcom/qdu100/qdsp6sw_dtbs.elf", >> + [54] = "qcom/qdu100/qupv3fw.elf", >> +}; > Why the Sahara driver hardcodes these firmware names in the first place? Sahara > is just a protocol to transfer these images to the device, so this driver > shouldn't have any device specific info hardcoded. IMO, this should just act as > a pure library. These firmware names should come from MHI controller drivers > instead. > > - Mani ACK. I will move these image tables to respective MHI controller drivers by implementing a registration mechanism. >