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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: ametek.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM5PR07MB3532.namprd07.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 80e4ce10-a3b9-4c9d-5345-08dd75e42f97 X-MS-Exchange-CrossTenant-originalarrivaltime: 07 Apr 2025 14:55:06.7362 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 31a88536-e2ab-44b5-837e-5110158247ab X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +yDNakRUsdsmMH4Ii0OqbWE4uDO7p9lLLf+am6KJLVCL0Py3liumdZ+yqJxg5fkLsKMN01t+H4WKdVK79hlVEZNNjdiHN+A2z1xrVs5JvU0= X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR07MB9464 X-Authority-Analysis: v=2.4 cv=auyyCTZV c=1 sm=1 tr=0 ts=67f3e74d cx=c_pps a=pibkrh05mLzxjy7FsoIMmA==:117 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=XR8D0OoHHMoA:10 a=m3P6IW4lH-wA:10 a=Uo_86BU20xzhBZ43C2wA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-GUID: T3IbymmAEc79JqLdPpTxjlkVkzc3zfhJ X-Proofpoint-ORIG-GUID: T3IbymmAEc79JqLdPpTxjlkVkzc3zfhJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1095,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-04-07_04,2025-04-03_03,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 suspectscore=0 bulkscore=0 phishscore=0 mlxscore=0 adultscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 impostorscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2502280000 definitions=main-2504070104 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250407_075512_012571_5A352872 X-CRM114-Status: GOOD ( 11.17 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.4 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: PCI memory mapping X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Hello, Barebox version: 2024-09 I am porting the Linux PCIE driver for Broadcom Cortex-A9 (ARMv7) chip. So far I am able to detect the bridge and NVME device attach to it: pci: pci_scan_bus for bus 0 pci: last_io =3D 0x00000000, last_mem =3D 0x20000000, last_mem_pref =3D 0x= 00000000 pci: class =3D 00000604, hdr_type =3D 00000001 pci: 00:00 [14e4:b170] pci: pci_scan_bus for bus 1 pci: last_io =3D 0x00000000, last_mem =3D 0x20000000, last_mem_pref =3D 0x= 00000000 pci: class =3D 00000108, hdr_type =3D 00000000 pci: 01:00 [126f:2263] ERROR: pci: last_mem =3D 0x20000000, 16384 pci: pbar0: mask=3Dffffc004 NP-MEM 16384 bytes ... pci: class =3D 00000108, hdr_type =3D 00000000 pci: 01:f8 [126f:2263] ERROR: pci: last_mem =3D 0x2007c000, 16384 pci: pbar0: mask=3Dffffc004 NP-MEM 16384 bytes pci: pci_scan_bus returning with max=3D02 pci: bridge NP limit at 0x20100000 The PCI memory address is assigned to the device and map (pci_iomap from nv= me_dev_map) but access to this PCI space crashes the system: pci: pci_scan_bus returning with max=3D02 ERROR: nvme_dev_map: bar =3D 0x20000000 nvme pci-126f:2263.0: enabling bus mastering ERROR: pci: __pci_set_master ERROR: nvme_pci_enable: address: 0x2000001c unable to handle paging request at address 0x2000001c pc : [<9fe3d6e4>] lr : [<9fe3d6d8>] sp : 9fff7f38 ip : 00000002 fp : 00000000 r10: 0006b52c r9 : 40000000 r8 : 9fea9b88 r7 : 7fe18500 r6 : 7fe295a8 r5 : 9fe8e5b8 r4 : 7fe29538 r3 : 20000000 r2 : 00000000 r1 : 0000000a r0 : 00000027 Flags: nZCv IRQs off FIQs off Mode SVC_32 [<9fe3d6e4>] (nvme_probe+0xd8/0x4c4) from [<9fe14650>] (device_probe+0x64/0= x15c) [<9fe14650>] (device_probe+0x64/0x15c) from [<9fe14778>] (match+0x30/0x68) Tracing the problem, I found that if I limit the scanning in pci_scan_bus t= o 1 device/function - for (devfn =3D 0; devfn < 0xff; ++devfn) { + for (devfn =3D 0; devfn < 0x8; ++devfn) { =3D=3D> At 0x10 I see the= crash. Then, the NVME device is detected: nvme pci-126f:2263.0: serial: A012410180620000000 nvme pci-126f:2263.0: model: SM681GEF AGS nvme pci-126f:2263.0: firmware: TFX7GB Has anybody seen this problem before (I havenoyt seen that on the LS1046A)? I am not seeing much diff with the master branch in /drivers/pci and driver= s/nvme Cheers, Renaud