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AKwUvBypHP9XyzAH9bu7D/AC5lWxRtZyPeiYY9RT5N4jI+hQqui71YYH7S4VMTe//HtEDGvmdjWtBLW+qQXDs290JQKL@lists.infradead.org X-Received: by 2002:a05:620a:17a9:b0:93c:ba2a:6c1a with SMTP id af79cd13be357-93ebd271e32mr3135979185a.61.1792085515187; Thu, 15 Oct 2026 10:31:55 -0700 (PDT) X-Received: by 2002:a05:620a:17a9:b0:93c:ba2a:6c1a with SMTP id af79cd13be357-93ebd271e32mr3135970985a.61.1792085514616; Thu, 15 Oct 2026 10:31:54 -0700 (PDT) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id af79cd13be357-93ef508205csm821976485a.35.2026.10.15.10.31.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Oct 2026 10:31:53 -0700 (PDT) Message-ID: <0dcfb2db-5536-465a-bee1-afe160535748@broadcom.com> Date: Thu, 15 Oct 2026 10:31:50 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/2] PCI: iproc-bcma: Use EROM instead of devicetree To: Bjorn Helgaas , Semih Baskan Cc: Manivannan Sadhasivam , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Ray Jui , Scott Branden , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Arnd Bergmann , Rosen Penev , Rani Hod , bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Bjorn Helgaas References: <20261013220421.1588051-1-bhelgaas@google.com> Content-Language: en-US, fr-FR From: Florian Fainelli Autocrypt: addr=florian.fainelli@broadcom.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261015_103200_184247_221A89C8 X-CRM114-Status: GOOD ( 15.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10/13/26 15:04, Bjorn Helgaas wrote: > This is a combination of these two patches: > > [PATCH v3] PCI: iproc: Use the EROM outbound window on BCMA > https://lore.kernel.org/all/20260807160526.379-1-strst.gs@gmail.com > > [PATCH] PCI: iproc: Use pci_alloc_host_bridge() on BCMA > https://lore.kernel.org/all/20260912043626.437-1-strst.gs@gmail.com > > I think it's a little simpler because it keeps the use of devm and it > doesn't require two pcie-iproc-bcma.c patches. I didn't sign off on the > pcie-iproc-bcma.c patch because it's Semih's work except for the minor devm > adaptation. And the commit log probably needs some work, but I don't know > enough to describe the platform/bcma driver issues. Humm, this is not materially different for me before/after applying tihs patch and unfortunately but here is what I am getting with these two patches applied on top of Linus' master at 0fcb05b72344f40806cbe810de8872f1698bf053: bcma-host-soc 18000000.axi: bus0: Flash type not supported iproc-pcie 18012000.pcie: host bridge /axi@18000000/pcie@12000 ranges: iproc-pcie 18012000.pcie: MEM 0x0008000000..0x000fffffff -> 0x0008000000 iproc-pcie 18012000.pcie: link: UP iproc-pcie 18012000.pcie: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [bus 00-ff] pci_bus 0000:00: root bus resource [mem 0x08000000-0x0fffffff] pci_bus 0000:00: 2-byte config write to 0000:00:00.0 offset 0xc8 may corrupt adjacent RW1C bits pci 0000:00:00.0: [14e4:8011] type 01 class 0x060400 PCIe Root Port pci 0000:00:00.0: PCI bridge to [bus 00] pci 0000:00:00.0: bridge window [mem 0x00000000-0x000fffff] pci 0000:00:00.0: bridge window [mem 0x00000000-0x000fffff 64bit pref] pci 0000:00:00.0: PME# supported from D0 D3hot D3cold PCI: bus0: Fast back to back transfers disabled pci 0000:00:00.0: bridge configuration invalid ([bus 00-00]), reconfiguring 8<--- cut here --- Unhandled fault: external abort on non-linefetch (0x1008) at 0xc896df40 [c896df40] *pgd=0101f811, *pte=18012243, *ppte=18012013 Internal error: : 1008 [#1] SMP ARM CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.3.0-rc7 #324 VOLUNTARY Hardware name: BCM5301X PC is at iproc_pcie_config_read32+0x50/0x3c4 LR is at pci_bus_read_config_dword+0x6c/0xb4 pc : [] lr : [] psr: 80000093 sp : c881d9f8 ip : c881da38 fp : c1ce1a00 r10: 00000001 r9 : 00000001 r8 : 00000000 r7 : 00000004 r6 : 00000000 r5 : c1ce1a00 r4 : c1ce1f80 r3 : c896df40 r2 : 0000ffff r1 : 00000f40 r0 : c1ce1a00 Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 0000404a DAC: 00000051 Register r0 information: slab kmalloc-512 start c1ce1a00 pointer offset 0 size 512 Register r1 information: non-paged memory Register r2 information: non-paged memory Register r3 information: 0-page vmalloc region starting at 0xc896d000 allocated at devm_pci_remap_cfgspace+0x4c/0x88 Register r4 information: slab kmalloc-512 start c1ce1e00 pointer offset 384 size 512 Register r5 information: slab kmalloc-512 start c1ce1a00 pointer offset 0 size 512 Register r6 information: NULL pointer Register r7 information: non-paged memory Register r8 information: NULL pointer Register r9 information: non-paged memory Register r10 information: non-paged memory Register r11 information: slab kmalloc-512 start c1ce1a00 pointer offset 0 size 512 Register r12 information: 2-page vmalloc region starting at 0xc881c000 allocated at kernel_clone+0xb8/0x348 Process swapper/0 (pid: 1, stack limit = 0x0133d9de) Stack: (0xc881d9f8 to 0xc881e000) d9e0: 0000072f 00000007 da00: 00000000 c094fe97 00000801 c044c560 60000013 c1ce1a00 c881da78 00000000 da20: 00000001 00000001 c1ce1a00 c04264e4 c881da38 c094e684 00000000 368113e9 da40: c1095d80 c881da78 0000ea60 00000000 c1ce1a00 c0429f08 c1ce1a00 00000000 da60: 00000000 c1ce1a00 00000000 00000000 00000000 c042a774 00000000 368113e9 da80: c101ef54 00000008 c1ce1a00 00000000 c1ce1a00 c042a828 40000013 368113e9 daa0: 00000008 c1ce1a00 00000000 c1ce1c00 00000000 c042bb34 c1260000 c1ce1c40 dac0: c1ce1a00 00000000 c1ce1c00 40000013 00ff0100 c1260000 00000000 00000000 dae0: c1ce1c00 00000000 00000001 00000000 c1ce1a00 c042b94c c7ff18c0 00000000 db00: c7ff1924 00030000 00ff0100 368113e9 014000f8 c1260000 c1ce1c00 c1ce1c14 db20: 00000001 00000001 00000000 00000000 00000001 c042bcac 00000001 00000000 db40: 00000001 00000000 00000000 00000000 c881db64 c1ce1e00 00000001 00000000 db60: c1ce1e00 c1ce2210 c7ff18c0 c1ce1f80 c7ff1924 c042bf58 c1ce1e00 00000001 db80: 00000000 c042bfdc 00000330 00000001 00000000 c1ce1e00 c1ce2210 c044bf5c dba0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 c1ce2210 dbc0: c1c0f140 00000000 c0921b88 c1ce2210 00000001 00000000 00009012 ffffffed dbe0: 01060400 c1ce1f80 c1ce1e00 368113e9 00000000 00000000 c1ce2210 c1ce2200 dc00: c1ce1f80 c1ce1e00 c7ff18c0 00000000 c7ff1924 c044ca40 00000000 00000000 dc20: 00000000 18012000 18012fff c7ff192c 00000200 00000000 00000000 00000000 dc40: 00000000 368113e9 c0f740f4 c1ce2210 c0f740f4 c0f740f4 00000000 00000000 dc60: c0f79d74 c049d398 c1ce2210 00000000 c0f740f4 c049aff4 c0fba560 c0fba578 dc80: c881dcec c1ce2210 00000000 c049b448 c0fba560 c0f740f4 c881dcec c1ce2210 dca0: c10dd240 c049b594 00000000 c881dcec c049b4cc c10dd200 c10dd240 c04992bc dcc0: 00000000 c10dd268 c120d7b8 368113e9 c1ce225c c1ce2210 00000001 c1ce225c dce0: c10dd200 c049b8b8 c7ff1b88 c1ce2210 00000001 368113e9 c10dd200 c1ce2210 dd00: c10dd200 c049ba54 c1ce2210 c1ce2210 c10dd200 c049a1a4 c1ce2210 00000000 dd20: c1ce225c c114aa10 00000000 c04979c0 00000000 00000000 00000000 00000000 dd40: 00000000 368113e9 00000000 c1ce2200 c114aa10 00000000 00000000 c7ff1924 dd60: 00000001 c05a4584 c7ff18c0 00000000 00000000 c083fc70 c114aa10 c05a4774 dd80: 00000000 368113e9 00000000 c881dddc c1028040 00000000 00000000 00000000 dda0: 00000000 00000000 00000000 00000000 00000000 368113e9 c1095d80 c7ff18c0 ddc0: c7ff1478 c083fc70 00000000 c114aa10 00000001 00000000 c0a45870 c05a4a50 dde0: 00000001 368113e9 c05ae584 c1028064 c114aa00 c1028040 c7ff1478 00000000 de00: c1028070 c05ac398 c1095d80 c1028040 c114aa00 c114aa10 c7ff1478 00000000 de20: c1c0f4b8 00000000 c0a45870 c05b184c c114aa10 c0f804b0 c0f804b0 00000000 de40: 00000000 c049d398 c114aa10 00000000 c0f804b0 c049aff4 c0fba560 c0fba578 de60: c114aa5c c114aa10 00000000 c049b448 c114aa10 c0f804b0 c114aa5c c10dd200 de80: c881df0c c049b6a0 00000000 c0f804b0 c049b5c4 c0498ff0 c10dd200 c10dd254 dea0: c10b0fb4 368113e9 c0828eb0 c1c0f480 00000000 c0f804b0 c10dd200 c049a438 dec0: c09409c8 00000000 c09409c8 c0f804b0 c1130f80 c0a23978 c1095d80 c881df0c dee0: c0a39860 c049c020 00000000 c1130f80 c0a23978 c0a2398c c0f89000 c0a01314 df00: c1130f9d 00000311 00000000 00000000 00000000 00000000 00000000 00000000 df20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 df40: 00000000 00000000 00000000 368113e9 0000009d c1130f80 c0a39840 c0f89000 df60: c0951bd0 c0a39860 00000006 c0a016b0 00000006 00000006 00000000 c0a004dc df80: c1095d80 c0f03f80 c07b7924 00000000 00000000 00000000 00000000 00000000 dfa0: 00000000 c07b7940 00000000 c010012c 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 Call trace: iproc_pcie_config_read32 from pci_bus_read_config_dword+0x6c/0xb4 pci_bus_read_config_dword from pci_bus_generic_read_dev_vendor_id+0x24/0x150 pci_bus_generic_read_dev_vendor_id from pci_scan_single_device+0x6c/0xc8 pci_scan_single_device from pci_scan_slot+0x58/0x230 pci_scan_slot from pci_scan_child_bus_extend+0x28/0x250 pci_scan_child_bus_extend from pci_scan_bridge_extend+0x290/0x430 pci_scan_bridge_extend from pci_scan_child_bus_extend+0x1a0/0x250 pci_scan_child_bus_extend from pci_scan_root_bus_bridge+0x60/0xc8 pci_scan_root_bus_bridge from pci_host_probe+0x1c/0xb8 pci_host_probe from iproc_pcie_setup+0x8a0/0xd94 iproc_pcie_setup from iproc_pltfm_pcie_probe+0x10c/0x1d4 iproc_pltfm_pcie_probe from platform_probe+0x48/0x84 platform_probe from really_probe+0xc8/0x2c8 really_probe from driver_probe_device+0x34/0xb8 driver_probe_device from __device_attach_driver+0xc8/0xf8 __device_attach_driver from bus_for_each_drv+0x90/0xe4 bus_for_each_drv from __device_attach+0xf8/0x164 __device_attach from device_initial_probe+0x3c/0x48 device_initial_probe from bus_probe_device+0x28/0x7c bus_probe_device from device_add+0x524/0x768 device_add from of_platform_device_create_pdata+0x90/0xb8 of_platform_device_create_pdata from of_platform_bus_create+0x1bc/0x360 of_platform_bus_create from of_platform_populate+0x60/0xb8 of_platform_populate from bcma_bus_register+0xec/0x5f0 bcma_bus_register from bcma_host_soc_probe+0x68/0x94 bcma_host_soc_probe from platform_probe+0x48/0x84 platform_probe from really_probe+0xc8/0x2c8 really_probe from driver_probe_device+0x34/0xb8 driver_probe_device from __driver_attach+0xdc/0x164 __driver_attach from bus_for_each_dev+0x7c/0xcc bus_for_each_dev from bus_add_driver+0xcc/0x1c0 bus_add_driver from driver_register+0x80/0x11c driver_register from bcma_modinit+0x14/0x48 bcma_modinit from do_one_initcall+0x7c/0x1e0 do_one_initcall from kernel_init_freeable+0x1e4/0x264 kernel_init_freeable from kernel_init+0x1c/0x12c kernel_init from ret_from_fork+0x14/0x28 Exception stack(0xc881dfb0 to 0xc881dff8) dfa0: 00000000 00000000 00000000 00000000 dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 Code: e1510002 0a00000d e594300c e0833001 (e5933000) ---[ end trace 0000000000000000 ]--- note ** replaying previous printk message ** note: swapper/0[1] exited with irqs disabled Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b -- Florian