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Subject[BISECTED] Regression: Solidrun Clearfog Base won't boot since "PCI: mvebu: Only remap I/O space if configured\"
Date
Hi,
since commit ee1604381a371b3ea6aec7d5e43b6e3f5e153854 ("PCI: mvebu: Only
remap I/O space if configured"), my board (Solidrun Clearfog Base) won't
finish booting with 4.18-rc3 won't boot:

> [ 1.741458] Internal error: Oops - undefined instruction: 0 [#1] SMP ARM
> [ 1.748182] CPU: 1 PID: 72 Comm: kworker/1:2 Tainted: G W 4.19.0-rc3 #1
> [ 1.756120] Hardware name: Marvell Armada 380/385 (Device Tree)
> [ 1.762063] Workqueue: events deferred_probe_work_func
> [ 1.767222] PC is at ioremap_page_range+0x114/0x1a4
> [ 1.772117] LR is at mvebu_pcie_probe+0x134/0xa60
> [ 1.776832] pc : [<c06e643c>] lr : [<c03e9d5c>] psr: a0000013
> [ 1.783115] sp : ee30dd88 ip : 000f0000 fp : c0837b38
> [ 1.788352] r10: 00000243 r9 : e9200000 r8 : 00000103
> [ 1.793590] r7 : ef6f8000 r6 : fee10000 r5 : fee00000 r4 : ef6f8004
> [ 1.800133] r3 : ef6f8000 r2 : e8000243 r1 : fee0ffff r0 : c0004000
> [ 1.806678] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
> [ 1.813832] Control: 10c5387d Table: 0000404a DAC: 00000051
> [ 1.819592] Process kworker/1:2 (pid: 72, stack limit = 0x(ptrval))
> [ 1.825874] Stack: (0xee30dd88 to 0xee30e000)
> [ 1.830244] dd80: fee10000 e9200000 fee0ffff ffe00000 c0007fb8 ee33e224
> [ 1.838445] dda0: 00000000 ee33e010 00000000 ef575610 ee33e224 00000000 c0a30ac4 00000002
> [ 1.846646] ddc0: ef9f827c c03e9d5c c0ab6d30 ef9ed434 ee342898 ee342898 ee33e1d0 ee33e1dc
> [ 1.854848] dde0: ee342898 00000000 c0a03bc8 c07fcabc 00000001 ef575610 ef577000 c02a72b4
> [ 1.863050] de00: 00000000 ee342898 ef6744d0 ef6744d0 ee342898 ef577000 c07fcabc 5d6fd1e4
> [ 1.871252] de20: c0a30ac4 ef575610 00000000 c0a30ac4 00000000 00000000 c0a30ac4 00000002
> [ 1.879454] de40: ef9e40c0 c043dba4 c0ab3144 ef575610 c0ab3150 c043c4e4 ef575610 c0a30ac4
> [ 1.887656] de60: c043cb2c c0a03bc8 00000001 c0a5cf50 00000000 c043c958 ef575610 c0a30ac4
> [ 1.895858] de80: ef575610 00000000 ee30ded4 c043cb2c c0a03bc8 00000001 c0a5cf50 00000000
> [ 1.904059] dea0: ef9e40c0 c043af7c c0a5cf50 ef484d6c ef66d8b8 5d6fd1e4 ef575610 ef575610
> [ 1.912261] dec0: c0a03bc8 ef575644 c0a371c4 c043c7c0 00000003 ef575610 00000001 5d6fd1e4
> [ 1.920462] dee0: ef575610 ef575610 c0a373f0 c0a371c4 00000000 c043b160 ef575610 c0a371a8
> [ 1.928663] df00: c0a371a8 c043bdf8 c0a371e0 ee2f9880 ef9e40c0 ef9e5300 00000000 c01388b4
> [ 1.936864] df20: ef9e40c0 ef9e40c0 ee30c000 ee2f9880 ef9e40c0 ee2f9894 c0a02d00 ef9e40d8
> [ 1.945064] df40: ffffe000 00000008 ef9e40c0 c0138e4c ffffe000 c0a5ca32 c07d2f68 00000000
> [ 1.953265] df60: ffffe000 eee5e0c0 ee2fa4c0 00000000 ee30c000 ee2f9880 c0138ba4 ef4d5ea4
> [ 1.961466] df80: eee5e0dc c013e448 00000001 ee2fa4c0 c013e2fc 00000000 00000000 00000000
> [ 1.969668] dfa0: 00000000 00000000 00000000 c01010e8 00000000 00000000 00000000 00000000
> [ 1.977869] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 1.986069] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
> [ 1.994277] [<c06e643c>] (ioremap_page_range) from [<c03e9d5c>] (mvebu_pcie_probe+0x134/0xa60)
> [ 2.002917] [<c03e9d5c>] (mvebu_pcie_probe) from [<c043dba4>] (platform_drv_probe+0x48/0x98)
> [ 2.011382] [<c043dba4>] (platform_drv_probe) from [<c043c4e4>] (really_probe+0x1d0/0x2bc)
> [ 2.019671] [<c043c4e4>] (really_probe) from [<c043c958>] (driver_probe_device+0x60/0x160)
> [ 2.027961] [<c043c958>] (driver_probe_device) from [<c043af7c>] (bus_for_each_drv+0x58/0xb8)
> [ 2.036511] [<c043af7c>] (bus_for_each_drv) from [<c043c7c0>] (__device_attach+0xd0/0x138)
> [ 2.044800] [<c043c7c0>] (__device_attach) from [<c043b160>] (bus_probe_device+0x84/0x8c)
> [ 2.053002] [<c043b160>] (bus_probe_device) from [<c043bdf8>] (deferred_probe_work_func+0x60/0x8c)
> [ 2.061991] [<c043bdf8>] (deferred_probe_work_func) from [<c01388b4>] (process_one_work+0x218/0x508)
> [ 2.071152] [<c01388b4>] (process_one_work) from [<c0138e4c>] (worker_thread+0x2a8/0x5c0)
> [ 2.079355] [<c0138e4c>] (worker_thread) from [<c013e448>] (kthread+0x14c/0x154)
> [ 2.086774] [<c013e448>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
> [ 2.094015] Exception stack(0xee30dfb0 to 0xee30dff8)
> [ 2.099079] dfa0: 00000000 00000000 00000000 00000000
> [ 2.107280] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [ 2.115481] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
> [ 2.122115] Code: e2844004 e5972000 e3520000 0affffee (e7f001f2)
> [ 2.128225] ---[ end trace 7a77412d00a47123 ]---
> [ 2.132853] Kernel panic - not syncing: Fatal exception
> [ 2.138094] CPU0: stopping
> [ 2.140811] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G D W 4.19.0-rc3 #1
> [ 2.148489] Hardware name: Marvell Armada 380/385 (Device Tree)
> [ 2.154430] [<c01109fc>] (unwind_backtrace) from [<c010c894>] (show_stack+0x10/0x14)
> [ 2.162198] [<c010c894>] (show_stack) from [<c06e29c4>] (dump_stack+0x88/0x9c)
> [ 2.169443] [<c06e29c4>] (dump_stack) from [<c010f71c>] (handle_IPI+0x38c/0x3ac)
> [ 2.176863] [<c010f71c>] (handle_IPI) from [<c03b4af4>] (gic_handle_irq+0x8c/0x90)
> [ 2.184457] [<c03b4af4>] (gic_handle_irq) from [<c0101a0c>] (__irq_svc+0x6c/0x90)
> [ 2.191960] Exception stack(0xc0a01f18 to 0xc0a01f60)
> [ 2.197024] 1f00: 00000000 00001db4
> [ 2.205226] 1f20: ef9d1398 c0119260 ffffe000 c0a03bf0 c0a03c30 00000001 00000000 c0a03bc8
> [ 2.213426] 1f40: c0968980 00000000 00000000 c0a01f68 c0108e68 c0108e6c 60000013 ffffffff
> [ 2.221631] [<c0101a0c>] (__irq_svc) from [<c0108e6c>] (arch_cpu_idle+0x38/0x3c)
> [ 2.229051] [<c0108e6c>] (arch_cpu_idle) from [<c014cf4c>] (do_idle+0x1e0/0x210)
> [ 2.236469] [<c014cf4c>] (do_idle) from [<c014d218>] (cpu_startup_entry+0x18/0x20)
> [ 2.244065] [<c014d218>] (cpu_startup_entry) from [<c0900f48>] (start_kernel+0x42c/0x454)
> [ 2.252268] [<c0900f48>] (start_kernel) from [<00000000>] ( (null))
> [ 2.258642] Rebooting in 10 seconds..

I cannot easily revert that commit now due to some followup changes. I'll
be happy to test patches which attempt to fix this.

The DTS file in use on this board is armada-388-clearfog-base.dts in case
it matters (we have some DT add-on patches on top of that, but nothing PCI-
or MBUS-related).

With kind regards,
Jan

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