Hi,
I have a laptop with two type C connectors. If I boot with a device
attached to a type C port, the firmware will assign 8K io space to the
bridge (v4.18-rc3):
6088-608b : 0000:00:17.0
6088-608b : ahci
7000-8fff : PCI Bus 0000:04
7000-8fff : PCI Bus 0000:05
7000-7fff : PCI Bus 0000:07
8000-8fff : PCI Bus 0000:3b
efa0-efbf : 0000:00:1f.4
efa0-efbf : i801_smbus
If however, I boot without a device, the allocation is less generous:
6088-608b : 0000:00:17.0
6088-608b : ahci
7000-7fff : PCI Bus 0000:04
efa0-efbf : 0000:00:1f.4
efa0-efbf : i801_smbus
Which leads to failures when something is plugged in:
[ 300.312233] pci 0000:04:00.0: [8086:1578] type 01 class 0x060400
[ 300.312286] pci 0000:04:00.0: enabling Extended Tags
[ 300.312356] pci 0000:04:00.0: supports D1 D2
[ 300.312358] pci 0000:04:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.312676] pci 0000:05:00.0: [8086:1578] type 01 class 0x060400
[ 300.312733] pci 0000:05:00.0: enabling Extended Tags
[ 300.312825] pci 0000:05:00.0: supports D1 D2
[ 300.312827] pci 0000:05:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.312923] pci 0000:05:01.0: [8086:1578] type 01 class 0x060400
[ 300.312987] pci 0000:05:01.0: enabling Extended Tags
[ 300.313061] pci 0000:05:01.0: supports D1 D2
[ 300.313063] pci 0000:05:01.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.313153] pci 0000:05:02.0: [8086:1578] type 01 class 0x060400
[ 300.313226] pci 0000:05:02.0: enabling Extended Tags
[ 300.313317] pci 0000:05:02.0: supports D1 D2
[ 300.313319] pci 0000:05:02.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.313398] pci 0000:05:04.0: [8086:1578] type 01 class 0x060400
[ 300.313451] pci 0000:05:04.0: enabling Extended Tags
[ 300.313522] pci 0000:05:04.0: supports D1 D2
[ 300.313524] pci 0000:05:04.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.313615] pci 0000:04:00.0: PCI bridge to [bus 05-6e]
[ 300.313623] pci 0000:04:00.0: bridge window [mem 0xac000000-0xda0fffff]
[ 300.313629] pci 0000:04:00.0: bridge window [mem 0x60000000-0xa9ffffff 64bit pref]
[ 300.313673] pci 0000:05:00.0: PCI bridge to [bus 06]
[ 300.313681] pci 0000:05:00.0: bridge window [mem 0xda000000-0xda0fffff]
[ 300.313726] pci 0000:05:01.0: PCI bridge to [bus 07-39]
[ 300.313734] pci 0000:05:01.0: bridge window [mem 0xac000000-0xc3efffff]
[ 300.313740] pci 0000:05:01.0: bridge window [mem 0x60000000-0x7fffffff 64bit pref]
[ 300.313797] pci 0000:3a:00.0: [8086:15b6] type 00 class 0x0c0330
[ 300.313831] pci 0000:3a:00.0: reg 0x10: [mem 0xc3f00000-0xc3f0ffff]
[ 300.313903] pci 0000:3a:00.0: enabling Extended Tags
[ 300.313993] pci 0000:3a:00.0: supports D1 D2
[ 300.313995] pci 0000:3a:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 300.314126] pci 0000:05:02.0: PCI bridge to [bus 3a]
[ 300.314134] pci 0000:05:02.0: bridge window [mem 0xc3f00000-0xc3ffffff]
[ 300.314178] pci 0000:05:04.0: PCI bridge to [bus 3b-6e]
[ 300.314186] pci 0000:05:04.0: bridge window [mem 0xc4000000-0xd9ffffff]
[ 300.314192] pci 0000:05:04.0: bridge window [mem 0x80000000-0xa9ffffff 64bit pref]
[ 300.314218] pci_bus 0000:05: Allocating resources
[ 300.314270] pci 0000:05:01.0: bridge window [io 0x1000-0x0fff] to [bus 07-39] add_size 1000
[ 300.314285] pci 0000:05:04.0: bridge window [io 0x1000-0x0fff] to [bus 3b-6e] add_size 1000
[ 300.314294] pci 0000:04:00.0: bridge window [io 0x1000-0x0fff] to [bus 05-6e] add_size 2000
[ 300.314297] pci 0000:04:00.0: BAR 13: no space for [io size 0x2000]
[ 300.314299] pci 0000:04:00.0: BAR 13: failed to assign [io size 0x2000]
[ 300.314301] pci 0000:04:00.0: BAR 13: no space for [io size 0x2000]
[ 300.314303] pci 0000:04:00.0: BAR 13: failed to assign [io size 0x2000]
[ 300.314305] pci 0000:05:01.0: BAR 13: no space for [io size 0x1000]
[ 300.314307] pci 0000:05:01.0: BAR 13: failed to assign [io size 0x1000]
[ 300.314308] pci 0000:05:04.0: BAR 13: no space for [io size 0x1000]
[ 300.314310] pci 0000:05:04.0: BAR 13: failed to assign [io size 0x1000]
[ 300.314312] pci 0000:05:04.0: BAR 13: no space for [io size 0x1000]
[ 300.314313] pci 0000:05:04.0: BAR 13: failed to assign [io size 0x1000]
[ 300.314315] pci 0000:05:01.0: BAR 13: no space for [io size 0x1000]
[ 300.314317] pci 0000:05:01.0: BAR 13: failed to assign [io size 0x1000]
[ 300.314319] pci 0000:05:00.0: PCI bridge to [bus 06]
[ 300.314324] pci 0000:05:00.0: bridge window [mem 0xda000000-0xda0fffff]
What is to be done?
Regards
Oliver
JFYI, a boot with devices plugged in:
[ 3.972037] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-7e])
[ 3.972042] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[ 3.972248] acpi PNP0A08:00: _OSC: platform does not support [PCIeHotplug PME]
[ 3.972443] acpi PNP0A08:00: _OSC: OS now controls [AER PCIeCapability LTR]
[ 3.972444] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
[ 3.974162] PCI host bridge to bus 0000:00
[ 3.974164] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 3.974165] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 3.974166] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 3.974167] pci_bus 0000:00: root bus resource [mem 0x3e800000-0xefffffff window]
[ 3.974168] pci_bus 0000:00: root bus resource [mem 0xfd000000-0xfe7fffff window]
[ 3.974169] pci_bus 0000:00: root bus resource [bus 00-7e]
[ 3.974176] pci 0000:00:00.0: [8086:1910] type 00 class 0x060000
[ 3.974797] pci 0000:00:01.0: [8086:1901] type 01 class 0x060400
[ 3.974831] pci 0000:00:01.0: PME# supported from D0 D3hot D3cold
[ 3.975516] pci 0000:00:02.0: [8086:191b] type 00 class 0x030000
[ 3.975524] pci 0000:00:02.0: reg 0x10: [mem 0xdb000000-0xdbffffff 64bit]
[ 3.975529] pci 0000:00:02.0: reg 0x18: [mem 0x50000000-0x5fffffff 64bit pref]
[ 3.975532] pci 0000:00:02.0: reg 0x20: [io 0x6000-0x603f]
[ 3.975544] pci 0000:00:02.0: BAR 2: assigned to efifb
[ 3.976225] pci 0000:00:14.0: [8086:a12f] type 00 class 0x0c0330
[ 3.976245] pci 0000:00:14.0: reg 0x10: [mem 0xdc320000-0xdc32ffff 64bit]
[ 3.976302] pci 0000:00:14.0: PME# supported from D3hot D3cold
[ 3.976941] pci 0000:00:14.2: [8086:a131] type 00 class 0x118000
[ 3.976959] pci 0000:00:14.2: reg 0x10: [mem 0xdc34a000-0xdc34afff 64bit]
[ 3.977626] pci 0000:00:16.0: [8086:a13a] type 00 class 0x078000
[ 3.977649] pci 0000:00:16.0: reg 0x10: [mem 0xdc34b000-0xdc34bfff 64bit]
[ 3.977715] pci 0000:00:16.0: PME# supported from D3hot
[ 3.978367] pci 0000:00:17.0: [8086:a102] type 00 class 0x010601
[ 3.978382] pci 0000:00:17.0: reg 0x10: [mem 0xdc348000-0xdc349fff]
[ 3.978388] pci 0000:00:17.0: reg 0x14: [mem 0xdc34e000-0xdc34e0ff]
[ 3.978394] pci 0000:00:17.0: reg 0x18: [io 0x6080-0x6087]
[ 3.978400] pci 0000:00:17.0: reg 0x1c: [io 0x6088-0x608b]
[ 3.978406] pci 0000:00:17.0: reg 0x20: [io 0x6040-0x605f]
[ 3.978413] pci 0000:00:17.0: reg 0x24: [mem 0xdc34c000-0xdc34c7ff]
[ 3.978447] pci 0000:00:17.0: PME# supported from D3hot
[ 3.979093] pci 0000:00:1c.0: [8086:a110] type 01 class 0x060400
[ 3.979151] pci 0000:00:1c.0: PME# supported from D0 D3hot D3cold
[ 3.979819] pci 0000:00:1c.1: [8086:a111] type 01 class 0x060400
[ 3.979878] pci 0000:00:1c.1: PME# supported from D0 D3hot D3cold
[ 3.980531] pci 0000:00:1c.4: [8086:a114] type 01 class 0x060400
[ 3.980588] pci 0000:00:1c.4: PME# supported from D0 D3hot D3cold
[ 3.981268] pci 0000:00:1f.0: [8086:a150] type 00 class 0x060100
[ 3.981958] pci 0000:00:1f.2: [8086:a121] type 00 class 0x058000
[ 3.981970] pci 0000:00:1f.2: reg 0x10: [mem 0xdc340000-0xdc343fff]
[ 3.982631] pci 0000:00:1f.3: [8086:a170] type 00 class 0x040380
[ 3.982654] pci 0000:00:1f.3: reg 0x10: [mem 0xdc344000-0xdc347fff 64bit]
[ 3.982677] pci 0000:00:1f.3: reg 0x20: [mem 0xdc330000-0xdc33ffff 64bit]
[ 3.982719] pci 0000:00:1f.3: PME# supported from D3hot D3cold
[ 3.983382] pci 0000:00:1f.4: [8086:a123] type 00 class 0x0c0500
[ 3.983435] pci 0000:00:1f.4: reg 0x10: [mem 0xdc34d000-0xdc34d0ff 64bit]
[ 3.983484] pci 0000:00:1f.4: reg 0x20: [io 0xefa0-0xefbf]
[ 3.984226] pci 0000:00:1f.6: [8086:15b7] type 00 class 0x020000
[ 3.984252] pci 0000:00:1f.6: reg 0x10: [mem 0xdc300000-0xdc31ffff]
[ 3.984355] pci 0000:00:1f.6: PME# supported from D0 D3hot D3cold
[ 3.985035] pci 0000:01:00.0: [1002:6820] type 00 class 0x030000
[ 3.985055] pci 0000:01:00.0: reg 0x10: [mem 0x40000000-0x4fffffff 64bit pref]
[ 3.985065] pci 0000:01:00.0: reg 0x18: [mem 0xdc000000-0xdc03ffff 64bit]
[ 3.985072] pci 0000:01:00.0: reg 0x20: [io 0x3000-0x30ff]
[ 3.985084] pci 0000:01:00.0: reg 0x30: [mem 0xfffe0000-0xffffffff pref]
[ 3.985130] pci 0000:01:00.0: supports D1 D2
[ 3.985131] pci 0000:01:00.0: PME# supported from D1 D2 D3hot
[ 3.985190] pci 0000:01:00.1: [1002:aab0] type 00 class 0x040300
[ 3.985208] pci 0000:01:00.1: reg 0x10: [mem 0xdc040000-0xdc043fff 64bit]
[ 3.985272] pci 0000:01:00.1: supports D1 D2
[ 3.985336] pci 0000:00:01.0: PCI bridge to [bus 01]
[ 3.985338] pci 0000:00:01.0: bridge window [io 0x3000-0x3fff]
[ 3.985339] pci 0000:00:01.0: bridge window [mem 0xdc000000-0xdc0fffff]
[ 3.985342] pci 0000:00:01.0: bridge window [mem 0x40000000-0x4fffffff 64bit pref]
[ 3.985645] pci 0000:02:00.0: [8086:24f3] type 00 class 0x028000
[ 3.985737] pci 0000:02:00.0: reg 0x10: [mem 0xdc100000-0xdc101fff 64bit]
[ 3.985943] pci 0000:02:00.0: PME# supported from D0 D3hot D3cold
[ 3.986498] pci 0000:00:1c.0: PCI bridge to [bus 02]
[ 3.986501] pci 0000:00:1c.0: bridge window [mem 0xdc100000-0xdc1fffff]
[ 3.986558] pci 0000:03:00.0: [10ec:525a] type 00 class 0xff0000
[ 3.986588] pci 0000:03:00.0: reg 0x14: [mem 0xdc200000-0xdc200fff]
[ 3.986686] pci 0000:03:00.0: supports D1 D2
[ 3.986687] pci 0000:03:00.0: PME# supported from D1 D2 D3hot D3cold
[ 3.986834] pci 0000:00:1c.1: PCI bridge to [bus 03]
[ 3.986837] pci 0000:00:1c.1: bridge window [io 0x4000-0x5fff]
[ 3.986839] pci 0000:00:1c.1: bridge window [mem 0xdc200000-0xdc2fffff]
[ 3.986893] pci 0000:04:00.0: [8086:1578] type 01 class 0x060400
[ 3.986942] pci 0000:04:00.0: enabling Extended Tags
[ 3.987008] pci 0000:04:00.0: supports D1 D2
[ 3.987009] pci 0000:04:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.987133] pci 0000:00:1c.4: PCI bridge to [bus 04-6e]
[ 3.987136] pci 0000:00:1c.4: bridge window [mem 0xac000000-0xda0fffff]
[ 3.987139] pci 0000:00:1c.4: bridge window [mem 0x60000000-0xa9ffffff 64bit pref]
[ 3.987188] pci 0000:05:00.0: [8086:1578] type 01 class 0x060400
[ 3.987238] pci 0000:05:00.0: enabling Extended Tags
[ 3.987307] pci 0000:05:00.0: supports D1 D2
[ 3.987308] pci 0000:05:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.987377] pci 0000:05:01.0: [8086:1578] type 01 class 0x060400
[ 3.987429] pci 0000:05:01.0: enabling Extended Tags
[ 3.987497] pci 0000:05:01.0: supports D1 D2
[ 3.987498] pci 0000:05:01.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.987564] pci 0000:05:02.0: [8086:1578] type 01 class 0x060400
[ 3.987615] pci 0000:05:02.0: enabling Extended Tags
[ 3.987682] pci 0000:05:02.0: supports D1 D2
[ 3.987683] pci 0000:05:02.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.987750] pci 0000:05:04.0: [8086:1578] type 01 class 0x060400
[ 3.987803] pci 0000:05:04.0: enabling Extended Tags
[ 3.987871] pci 0000:05:04.0: supports D1 D2
[ 3.987871] pci 0000:05:04.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.987954] pci 0000:04:00.0: PCI bridge to [bus 05-6e]
[ 3.987961] pci 0000:04:00.0: bridge window [mem 0xac000000-0xda0fffff]
[ 3.987966] pci 0000:04:00.0: bridge window [mem 0x60000000-0xa9ffffff 64bit pref]
[ 3.988003] pci 0000:05:00.0: PCI bridge to [bus 06]
[ 3.988011] pci 0000:05:00.0: bridge window [mem 0xda000000-0xda0fffff]
[ 3.988052] pci 0000:05:01.0: PCI bridge to [bus 07-39]
[ 3.988059] pci 0000:05:01.0: bridge window [mem 0xac000000-0xc3efffff]
[ 3.988065] pci 0000:05:01.0: bridge window [mem 0x60000000-0x7fffffff 64bit pref]
[ 3.988116] pci 0000:3a:00.0: [8086:15b6] type 00 class 0x0c0330
[ 3.988148] pci 0000:3a:00.0: reg 0x10: [mem 0xc3f00000-0xc3f0ffff]
[ 3.988220] pci 0000:3a:00.0: enabling Extended Tags
[ 3.988310] pci 0000:3a:00.0: supports D1 D2
[ 3.988311] pci 0000:3a:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 3.988434] pci 0000:05:02.0: PCI bridge to [bus 3a]
[ 3.988441] pci 0000:05:02.0: bridge window [mem 0xc3f00000-0xc3ffffff]
[ 3.988482] pci 0000:05:04.0: PCI bridge to [bus 3b-6e]
[ 3.988489] pci 0000:05:04.0: bridge window [mem 0xc4000000-0xd9ffffff]
[ 3.988494] pci 0000:05:04.0: bridge window [mem 0x80000000-0xa9ffffff 64bit pref]
