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Wed, 3 Jun 2026 08:12:43 +0000 (GMT) Message-ID: <66039318-07c0-4453-a295-bc39a2a5b8ec@linux.ibm.com> Date: Wed, 3 Jun 2026 13:42:42 +0530 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] [SCSI] qla2xxx: Handle the INTx not connected while passing through To: Shivaprasad G Bhat , njavali@marvell.com, GR-QLogic-Storage-Upstream@marvell.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, alex.williamson@nvidia.com, Kyle.Mahlkuch@ibm.com, linuxppc-dev References: <177885270578.1573.14283751510936407585.stgit@linux.ibm.com> Content-Language: en-US From: Madhavan Srinivasan In-Reply-To: <177885270578.1573.14283751510936407585.stgit@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=Zt3d7d7G c=1 sm=1 tr=0 ts=6a1fe201 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=5Kag_sxTX4npdQ8vrmgA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: DloX0hs752n9nOVtAfP7Ta6L2ag0gAsL X-Proofpoint-ORIG-GUID: DloX0hs752n9nOVtAfP7Ta6L2ag0gAsL X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjAzMDA3NiBTYWx0ZWRfXxeBod29K6jTk F2FkP4wRX9UZQn192C/W2D3oFLNfAJRmoFNABWBdG2rLNNS6GslV5r6mrojSl5kX9kUnRiw7pX9 nlIij5m72UTWGCLFuHGVT1nrHVWpnUKKTFiLJOqAkV4J5/sBplEaFe+ZCC6GmvJPmrXjx2n43v0 PJUWqIsGRmSwW3Lr2Cd2iQI8QDuDfzQnMVsiDFMHzY7SFPqDJ9p2kXq2vSi3+c9YrakWW9pQYrP MVxpapw7gAynJgVaDj3TVrz4bI3a+UKZYM3ha9rq09ctwy4TYgzUI9CHLO+01ECR0l8fMfXkBqq xa/5zccuWSGLjH0s/do2Sw4lSh9UODpprLMX5cd1Nu5Ci3ixZJ+aDiH5drL7kk9C7All9kOTHn2 vZUTjpBrDfjal81gCn86zzZN93XJ/5uL8/ADNa1441JkyOh7vZnHMomZmdqTQFlInzLBvd9ObQP yDc/M9YUSo31VgXvOVA== 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=2026-06-03_03,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 clxscore=1011 phishscore=0 spamscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606030076 On 5/15/26 7:15 PM, Shivaprasad G Bhat wrote: > The PCI_INTERRUPT_PIN reports if the device supports the INTx. > However, when the device is assigned to a guest via vfio, the > PCI_INTERRUPT_PIN is set to 0(i.e none) if the line is not > connected and|or the platform cannot route the interrupt. > > In such cases, the guest PCI_INTERRUPT_PIN is 0 and the port > number becomes -1(255, uint8_t underflow) for qla[25|27|28]xx and > qla2031 devices. The flt_region_nvram is never set, and subsequently > the lun detection fails. Below warnings show the NVRAM configuration > failure. > > []-0073:1: Inconsistent NVRAM checksum=0xffffffc0 id=HCAM version=0x100. > []-0074:1: Falling back to functioning (yet invalid -- WWPN) defaults. > []-0076:1: NVRAM configuration failed. > > The patch handles the case, and sets the port_no to devfn like > its done everywhere else. Any update on this? do you have any comments/concerns that should be addressed Maddy > Reference: commit 2bd42b03ab6b ("vfio/pci: Virtualize zero INTx PIN if no pdev->irq") > Signed-off-by: Shivaprasad G Bhat > --- > drivers/scsi/qla2xxx/qla_os.c | 15 ++++++++++----- > 1 file changed, 10 insertions(+), 5 deletions(-) > > diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c > index 72b1c28e4dae..a8d6a0a021f4 100644 > --- a/drivers/scsi/qla2xxx/qla_os.c > +++ b/drivers/scsi/qla2xxx/qla_os.c > @@ -2803,11 +2803,16 @@ qla2x00_set_isp_flags(struct qla_hw_data *ha) > else { > /* Get adapter physical port no from interrupt pin register. */ > pci_read_config_byte(ha->pdev, PCI_INTERRUPT_PIN, &ha->port_no); > - if (IS_QLA25XX(ha) || IS_QLA2031(ha) || > - IS_QLA27XX(ha) || IS_QLA28XX(ha)) > - ha->port_no--; > - else > - ha->port_no = !(ha->port_no & 1); > + if (ha->port_no == 0) { > + /* None of INT[A|B|C|D], may be virtualized by vfio */ > + ha->port_no = PCI_FUNC(ha->pdev->devfn); > + } else { > + if (IS_QLA25XX(ha) || IS_QLA2031(ha) || > + IS_QLA27XX(ha) || IS_QLA28XX(ha)) > + ha->port_no--; > + else > + ha->port_no = !(ha->port_no & 1); > + } > } > > ql_dbg_pci(ql_dbg_init, ha->pdev, 0x000b, > >